Merge tag 'mips_5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux

Pull MIPS updates from Paul Burton:

 - Support for the MIPSr6 MemoryMapID register & Global INValidate TLB
   (GINVT) instructions, allowing for more efficient TLB maintenance
   when running on a CPU such as the I6500 that supports these.

 - Enable huge page support for MIPS64r6.

 - Optimize post-DMA cache sync by removing that code entirely for
   kernel configurations in which we know it won't be needed.

 - The number of pages allocated for interrupt stacks is now calculated
   correctly, where before we would wastefully allocate too much memory
   in some configurations.

 - The ath79 platform migrates to devicetree.

 - The bcm47xx platform sees fixes for the Buffalo WHR-G54S board.

 - The ingenic/jz4740 platform gains support for appended devicetrees.

 - The cavium_octeon, lantiq, loongson32 & sgi-ip27 platforms all see
   cleanups as do various pieces of core architecture code.

* tag 'mips_5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: (66 commits)
  MIPS: lantiq: Remove separate GPHY Firmware loader
  MIPS: ingenic: Add support for appended devicetree
  MIPS: SGI-IP27: rework HUB interrupts
  MIPS: SGI-IP27: do boot CPU init later
  MIPS: SGI-IP27: do xtalk scanning later
  MIPS: SGI-IP27: use pr_info/pr_emerg and pr_cont to fix output
  MIPS: SGI-IP27: clean up bridge access and header files
  MIPS: SGI-IP27: get rid of volatile and hubreg_t
  MIPS: irq: Allocate accurate order pages for irq stack
  MIPS: dma-noncoherent: Remove bogus condition in dma_sync_phys()
  MIPS: eBPF: Remove REG_32BIT_ZERO_EX
  MIPS: eBPF: Always return sign extended 32b values
  MIPS: CM: Fix indentation
  MIPS: BCM47XX: Fix/improve Buffalo WHR-G54S support
  MIPS: OCTEON: program rx/tx-delay always from DT
  MIPS: OCTEON: delete board-specific link status
  MIPS: OCTEON: don't lie about interface type of CN3005 board
  MIPS: OCTEON: warn if deprecated link status is being used
  MIPS: OCTEON: add fixed-link nodes to in-kernel device tree
  MIPS: Delete unused flush_cache_sigtramp()
  ...

114 files changed, 1607 insertions, 4335 deletions

diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index a84c24d894aa..9036ef9ec74a 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -206,7 +206,6 @@ config ATH79
 	select COMMON_CLK
 	select CLKDEV_LOOKUP
 	select IRQ_MIPS_CPU
-	select MIPS_MACHINE
 	select SYS_HAS_CPU_MIPS32_R2
 	select SYS_HAS_EARLY_PRINTK
 	select SYS_SUPPORTS_32BIT_KERNEL
@@ -391,7 +390,7 @@ config MACH_INGENIC
 	select GPIOLIB
 	select COMMON_CLK
 	select GENERIC_IRQ_CHIP
-	select BUILTIN_DTB
+	select BUILTIN_DTB if MIPS_NO_APPENDED_DTB
 	select USE_OF
 	select LIBFDT
 
@@ -676,6 +675,7 @@ config SGI_IP27
 	select DEFAULT_SGI_PARTITION
 	select SYS_HAS_EARLY_PRINTK
 	select HAVE_PCI
+	select IRQ_MIPS_CPU
 	select NR_CPUS_DEFAULT_64
 	select SYS_HAS_CPU_R10000
 	select SYS_SUPPORTS_64BIT_KERNEL
@@ -1124,7 +1124,6 @@ config DMA_NONCOHERENT
 	bool
 	select ARCH_HAS_DMA_MMAP_PGPROT
 	select ARCH_HAS_SYNC_DMA_FOR_DEVICE
-	select ARCH_HAS_SYNC_DMA_FOR_CPU
 	select NEED_DMA_MAP_STATE
 	select ARCH_HAS_DMA_COHERENT_TO_PFN
 	select DMA_NONCOHERENT_CACHE_SYNC
@@ -1556,6 +1555,7 @@ config CPU_MIPS64_R6
 	select CPU_SUPPORTS_32BIT_KERNEL
 	select CPU_SUPPORTS_64BIT_KERNEL
 	select CPU_SUPPORTS_HIGHMEM
+	select CPU_SUPPORTS_HUGEPAGES
 	select CPU_SUPPORTS_MSA
 	select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
 	select HAVE_KVM
@@ -1881,7 +1881,7 @@ config CPU_LOONGSON2
 config CPU_LOONGSON1
 	bool
 	select CPU_MIPS32
-	select CPU_MIPSR1
+	select CPU_MIPSR2
 	select CPU_HAS_PREFETCH
 	select CPU_HAS_LOAD_STORE_LR
 	select CPU_SUPPORTS_32BIT_KERNEL
@@ -1943,9 +1943,11 @@ config SYS_HAS_CPU_MIPS32_R3_5
 
 config SYS_HAS_CPU_MIPS32_R5
 	bool
+	select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
 
 config SYS_HAS_CPU_MIPS32_R6
 	bool
+	select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
 
 config SYS_HAS_CPU_MIPS64_R1
 	bool
@@ -1955,6 +1957,7 @@ config SYS_HAS_CPU_MIPS64_R2
 
 config SYS_HAS_CPU_MIPS64_R6
 	bool
+	select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
 
 config SYS_HAS_CPU_R3000
 	bool
@@ -1991,6 +1994,7 @@ config SYS_HAS_CPU_R8000
 
 config SYS_HAS_CPU_R10000
 	bool
+	select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
 
 config SYS_HAS_CPU_RM7000
 	bool
@@ -2019,6 +2023,7 @@ config SYS_HAS_CPU_BMIPS4380
 config SYS_HAS_CPU_BMIPS5000
 	bool
 	select SYS_HAS_CPU_BMIPS
+	select ARCH_HAS_SYNC_DMA_FOR_CPU
 
 config SYS_HAS_CPU_XLR
 	bool
diff --git a/arch/mips/Makefile b/arch/mips/Makefile
index 5b174c3d0de3..8f4486c4415b 100644
--- a/arch/mips/Makefile
+++ b/arch/mips/Makefile
@@ -233,6 +233,8 @@ toolchain-crc				:= $(call cc-option-yn,$(mips-cflags) -Wa$(comma)-mcrc)
 cflags-$(toolchain-crc)			+= -DTOOLCHAIN_SUPPORTS_CRC
 toolchain-dsp				:= $(call cc-option-yn,$(mips-cflags) -Wa$(comma)-mdsp)
 cflags-$(toolchain-dsp)			+= -DTOOLCHAIN_SUPPORTS_DSP
+toolchain-ginv				:= $(call cc-option-yn,$(mips-cflags) -Wa$(comma)-mginv)
+cflags-$(toolchain-ginv)		+= -DTOOLCHAIN_SUPPORTS_GINV
 
 #
 # Firmware support
diff --git a/arch/mips/ath79/Kconfig b/arch/mips/ath79/Kconfig
index 191c3910eac5..7367416642cb 100644
--- a/arch/mips/ath79/Kconfig
+++ b/arch/mips/ath79/Kconfig
@@ -1,79 +1,6 @@
 # SPDX-License-Identifier: GPL-2.0
 if ATH79
 
-menu "Atheros AR71XX/AR724X/AR913X machine selection"
-
-config ATH79_MACH_AP121
-	bool "Atheros AP121 reference board"
-	select SOC_AR933X
-	select ATH79_DEV_GPIO_BUTTONS
-	select ATH79_DEV_LEDS_GPIO
-	select ATH79_DEV_SPI
-	select ATH79_DEV_USB
-	select ATH79_DEV_WMAC
-	help
-	  Say 'Y' here if you want your kernel to support the
-	  Atheros AP121 reference board.
-
-config ATH79_MACH_AP136
-	bool "Atheros AP136 reference board"
-	select SOC_QCA955X
-	select ATH79_DEV_GPIO_BUTTONS
-	select ATH79_DEV_LEDS_GPIO
-	select ATH79_DEV_SPI
-	select ATH79_DEV_USB
-	select ATH79_DEV_WMAC
-	help
-	  Say 'Y' here if you want your kernel to support the
-	  Atheros AP136 reference board.
-
-config ATH79_MACH_AP81
-	bool "Atheros AP81 reference board"
-	select SOC_AR913X
-	select ATH79_DEV_GPIO_BUTTONS
-	select ATH79_DEV_LEDS_GPIO
-	select ATH79_DEV_SPI
-	select ATH79_DEV_USB
-	select ATH79_DEV_WMAC
-	help
-	  Say 'Y' here if you want your kernel to support the
-	  Atheros AP81 reference board.
-
-config ATH79_MACH_DB120
-	bool "Atheros DB120 reference board"
-	select SOC_AR934X
-	select ATH79_DEV_GPIO_BUTTONS
-	select ATH79_DEV_LEDS_GPIO
-	select ATH79_DEV_SPI
-	select ATH79_DEV_USB
-	select ATH79_DEV_WMAC
-	help
-	  Say 'Y' here if you want your kernel to support the
-	  Atheros DB120 reference board.
-
-config ATH79_MACH_PB44
-	bool "Atheros PB44 reference board"
-	select SOC_AR71XX
-	select ATH79_DEV_GPIO_BUTTONS
-	select ATH79_DEV_LEDS_GPIO
-	select ATH79_DEV_SPI
-	select ATH79_DEV_USB
-	help
-	  Say 'Y' here if you want your kernel to support the
-	  Atheros PB44 reference board.
-
-config ATH79_MACH_UBNT_XM
-	bool "Ubiquiti Networks XM (rev 1.0) board"
-	select SOC_AR724X
-	select ATH79_DEV_GPIO_BUTTONS
-	select ATH79_DEV_LEDS_GPIO
-	select ATH79_DEV_SPI
-	help
-	  Say 'Y' here if you want your kernel to support the
-	  Ubiquiti Networks XM (rev 1.0) board.
-
-endmenu
-
 config SOC_AR71XX
 	select HAVE_PCI
 	def_bool n
diff --git a/arch/mips/ath79/Makefile b/arch/mips/ath79/Makefile
index fcc382cfc770..e18d9a2ecf62 100644
--- a/arch/mips/ath79/Makefile
+++ b/arch/mips/ath79/Makefile
@@ -8,27 +8,6 @@
 # under the terms of the GNU General Public License version 2 as published
 # by the Free Software Foundation.
 
-obj-y	:= prom.o setup.o irq.o common.o clock.o
+obj-y	:= prom.o setup.o common.o clock.o
 
 obj-$(CONFIG_EARLY_PRINTK)		+= early_printk.o
-obj-$(CONFIG_PCI)			+= pci.o
-
-#
-# Devices
-#
-obj-y					+= dev-common.o
-obj-$(CONFIG_ATH79_DEV_GPIO_BUTTONS)	+= dev-gpio-buttons.o
-obj-$(CONFIG_ATH79_DEV_LEDS_GPIO)	+= dev-leds-gpio.o
-obj-$(CONFIG_ATH79_DEV_SPI)		+= dev-spi.o
-obj-$(CONFIG_ATH79_DEV_USB)		+= dev-usb.o
-obj-$(CONFIG_ATH79_DEV_WMAC)		+= dev-wmac.o
-
-#
-# Machines
-#
-obj-$(CONFIG_ATH79_MACH_AP121)		+= mach-ap121.o
-obj-$(CONFIG_ATH79_MACH_AP136)		+= mach-ap136.o
-obj-$(CONFIG_ATH79_MACH_AP81)		+= mach-ap81.o
-obj-$(CONFIG_ATH79_MACH_DB120)		+= mach-db120.o
-obj-$(CONFIG_ATH79_MACH_PB44)		+= mach-pb44.o
-obj-$(CONFIG_ATH79_MACH_UBNT_XM)	+= mach-ubnt-xm.o
diff --git a/arch/mips/ath79/clock.c b/arch/mips/ath79/clock.c
index cf9158e3c2d9..d4ca97e2ec6c 100644
--- a/arch/mips/ath79/clock.c
+++ b/arch/mips/ath79/clock.c
@@ -26,7 +26,6 @@
 #include <asm/mach-ath79/ath79.h>
 #include <asm/mach-ath79/ar71xx_regs.h>
 #include "common.h"
-#include "machtypes.h"
 
 #define AR71XX_BASE_FREQ	40000000
 #define AR724X_BASE_FREQ	40000000
@@ -37,24 +36,63 @@ static struct clk_onecell_data clk_data = {
 	.clk_num = ARRAY_SIZE(clks),
 };
 
-static struct clk *__init ath79_add_sys_clkdev(
-	const char *id, unsigned long rate)
+static const char * const clk_names[ATH79_CLK_END] = {
+	[ATH79_CLK_CPU] = "cpu",
+	[ATH79_CLK_DDR] = "ddr",
+	[ATH79_CLK_AHB] = "ahb",
+	[ATH79_CLK_REF] = "ref",
+	[ATH79_CLK_MDIO] = "mdio",
+};
+
+static const char * __init ath79_clk_name(int type)
 {
-	struct clk *clk;
-	int err;
+	BUG_ON(type >= ARRAY_SIZE(clk_names) || !clk_names[type]);
+	return clk_names[type];
+}
 
-	clk = clk_register_fixed_rate(NULL, id, NULL, 0, rate);
+static void __init __ath79_set_clk(int type, const char *name, struct clk *clk)
+{
 	if (IS_ERR(clk))
-		panic("failed to allocate %s clock structure", id);
+		panic("failed to allocate %s clock structure", clk_names[type]);
 
-	err = clk_register_clkdev(clk, id, NULL);
-	if (err)
-		panic("unable to register %s clock device", id);
+	clks[type] = clk;
+	clk_register_clkdev(clk, name, NULL);
+}
 
+static struct clk * __init ath79_set_clk(int type, unsigned long rate)
+{
+	const char *name = ath79_clk_name(type);
+	struct clk *clk;
+
+	clk = clk_register_fixed_rate(NULL, name, NULL, 0, rate);
+	__ath79_set_clk(type, name, clk);
 	return clk;
 }
 
-static void __init ar71xx_clocks_init(void)
+static struct clk * __init ath79_set_ff_clk(int type, const char *parent,
+					    unsigned int mult, unsigned int div)
+{
+	const char *name = ath79_clk_name(type);
+	struct clk *clk;
+
+	clk = clk_register_fixed_factor(NULL, name, parent, 0, mult, div);
+	__ath79_set_clk(type, name, clk);
+	return clk;
+}
+
+static unsigned long __init ath79_setup_ref_clk(unsigned long rate)
+{
+	struct clk *clk = clks[ATH79_CLK_REF];
+
+	if (clk)
+		rate = clk_get_rate(clk);
+	else
+		clk = ath79_set_clk(ATH79_CLK_REF, rate);
+
+	return rate;
+}
+
+static void __init ar71xx_clocks_init(void __iomem *pll_base)
 {
 	unsigned long ref_rate;
 	unsigned long cpu_rate;
@@ -64,9 +102,9 @@ static void __init ar71xx_clocks_init(void)
 	u32 freq;
 	u32 div;
 
-	ref_rate = AR71XX_BASE_FREQ;
+	ref_rate = ath79_setup_ref_clk(AR71XX_BASE_FREQ);
 
-	pll = ath79_pll_rr(AR71XX_PLL_REG_CPU_CONFIG);
+	pll = __raw_readl(pll_base + AR71XX_PLL_REG_CPU_CONFIG);
 
 	div = ((pll >> AR71XX_PLL_FB_SHIFT) & AR71XX_PLL_FB_MASK) + 1;
 	freq = div * ref_rate;
@@ -80,31 +118,17 @@ static void __init ar71xx_clocks_init(void)
 	div = (((pll >> AR71XX_AHB_DIV_SHIFT) & AR71XX_AHB_DIV_MASK) + 1) * 2;
 	ahb_rate = cpu_rate / div;
 
-	ath79_add_sys_clkdev("ref", ref_rate);
-	clks[ATH79_CLK_CPU] = ath79_add_sys_clkdev("cpu", cpu_rate);
-	clks[ATH79_CLK_DDR] = ath79_add_sys_clkdev("ddr", ddr_rate);
-	clks[ATH79_CLK_AHB] = ath79_add_sys_clkdev("ahb", ahb_rate);
-
-	clk_add_alias("wdt", NULL, "ahb", NULL);
-	clk_add_alias("uart", NULL, "ahb", NULL);
+	ath79_set_clk(ATH79_CLK_CPU, cpu_rate);
+	ath79_set_clk(ATH79_CLK_DDR, ddr_rate);
+	ath79_set_clk(ATH79_CLK_AHB, ahb_rate);
 }
 
-static struct clk * __init ath79_reg_ffclk(const char *name,
-		const char *parent_name, unsigned int mult, unsigned int div)
+static void __init ar724x_clocks_init(void __iomem *pll_base)
 {
-	struct clk *clk;
-
-	clk = clk_register_fixed_factor(NULL, name, parent_name, 0, mult, div);
-	if (IS_ERR(clk))
-		panic("failed to allocate %s clock structure", name);
-
-	return clk;
-}
-
-static void __init ar724x_clk_init(struct clk *ref_clk, void __iomem *pll_base)
-{
-	u32 pll;
 	u32 mult, div, ddr_div, ahb_div;
+	u32 pll;
+
+	ath79_setup_ref_clk(AR71XX_BASE_FREQ);
 
 	pll = __raw_readl(pll_base + AR724X_PLL_REG_CPU_CONFIG);
 
@@ -114,30 +138,14 @@ static void __init ar724x_clk_init(struct clk *ref_clk, void __iomem *pll_base)
 	ddr_div = ((pll >> AR724X_DDR_DIV_SHIFT) & AR724X_DDR_DIV_MASK) + 1;
 	ahb_div = (((pll >> AR724X_AHB_DIV_SHIFT) & AR724X_AHB_DIV_MASK) + 1) * 2;
 
-	clks[ATH79_CLK_CPU] = ath79_reg_ffclk("cpu", "ref", mult, div);
-	clks[ATH79_CLK_DDR] = ath79_reg_ffclk("ddr", "ref", mult, div * ddr_div);
-	clks[ATH79_CLK_AHB] = ath79_reg_ffclk("ahb", "ref", mult, div * ahb_div);
-}
-
-static void __init ar724x_clocks_init(void)
-{
-	struct clk *ref_clk;
-
-	ref_clk = ath79_add_sys_clkdev("ref", AR724X_BASE_FREQ);
-
-	ar724x_clk_init(ref_clk, ath79_pll_base);
-
-	/* just make happy plat_time_init() from arch/mips/ath79/setup.c */
-	clk_register_clkdev(clks[ATH79_CLK_CPU], "cpu", NULL);
-	clk_register_clkdev(clks[ATH79_CLK_DDR], "ddr", NULL);
-	clk_register_clkdev(clks[ATH79_CLK_AHB], "ahb", NULL);
-
-	clk_add_alias("wdt", NULL, "ahb", NULL);
-	clk_add_alias("uart", NULL, "ahb", NULL);
+	ath79_set_ff_clk(ATH79_CLK_CPU, "ref", mult, div);
+	ath79_set_ff_clk(ATH79_CLK_DDR, "ref", mult, div * ddr_div);
+	ath79_set_ff_clk(ATH79_CLK_AHB, "ref", mult, div * ahb_div);
 }
 
-static void __init ar9330_clk_init(struct clk *ref_clk, void __iomem *pll_base)
+static void __init ar933x_clocks_init(void __iomem *pll_base)
 {
+	unsigned long ref_rate;
 	u32 clock_ctrl;
 	u32 ref_div;
 	u32 ninit_mul;
@@ -146,6 +154,15 @@ static void __init ar9330_clk_init(struct clk *ref_clk, void __iomem *pll_base)
 	u32 cpu_div;
 	u32 ddr_div;
 	u32 ahb_div;
+	u32 t;
+
+	t = ath79_reset_rr(AR933X_RESET_REG_BOOTSTRAP);
+	if (t & AR933X_BOOTSTRAP_REF_CLK_40)
+		ref_rate = (40 * 1000 * 1000);
+	else
+		ref_rate = (25 * 1000 * 1000);
+
+	ath79_setup_ref_clk(ref_rate);
 
 	clock_ctrl = __raw_readl(pll_base + AR933X_PLL_CLOCK_CTRL_REG);
 	if (clock_ctrl & AR933X_PLL_CLOCK_CTRL_BYPASS) {
@@ -186,37 +203,12 @@ static void __init ar9330_clk_init(struct clk *ref_clk, void __iomem *pll_base)
 		     AR933X_PLL_CLOCK_CTRL_AHB_DIV_MASK) + 1;
 	}
 
-	clks[ATH79_CLK_CPU] = ath79_reg_ffclk("cpu", "ref",
-					ninit_mul, ref_div * out_div * cpu_div);
-	clks[ATH79_CLK_DDR] = ath79_reg_ffclk("ddr", "ref",
-					ninit_mul, ref_div * out_div * ddr_div);
-	clks[ATH79_CLK_AHB] = ath79_reg_ffclk("ahb", "ref",
-					ninit_mul, ref_div * out_div * ahb_div);
-}
-
-static void __init ar933x_clocks_init(void)
-{
-	struct clk *ref_clk;
-	unsigned long ref_rate;
-	u32 t;
-
-	t = ath79_reset_rr(AR933X_RESET_REG_BOOTSTRAP);
-	if (t & AR933X_BOOTSTRAP_REF_CLK_40)
-		ref_rate = (40 * 1000 * 1000);
-	else
-		ref_rate = (25 * 1000 * 1000);
-
-	ref_clk = ath79_add_sys_clkdev("ref", ref_rate);
-
-	ar9330_clk_init(ref_clk, ath79_pll_base);
-
-	/* just make happy plat_time_init() from arch/mips/ath79/setup.c */
-	clk_register_clkdev(clks[ATH79_CLK_CPU], "cpu", NULL);
-	clk_register_clkdev(clks[ATH79_CLK_DDR], "ddr", NULL);
-	clk_register_clkdev(clks[ATH79_CLK_AHB], "ahb", NULL);
-
-	clk_add_alias("wdt", NULL, "ahb", NULL);
-	clk_add_alias("uart", NULL, "ref", NULL);
+	ath79_set_ff_clk(ATH79_CLK_CPU, "ref", ninit_mul,
+			 ref_div * out_div * cpu_div);
+	ath79_set_ff_clk(ATH79_CLK_DDR, "ref", ninit_mul,
+			 ref_div * out_div * ddr_div);
+	ath79_set_ff_clk(ATH79_CLK_AHB, "ref", ninit_mul,
+			 ref_div * out_div * ahb_div);
 }
 
 static u32 __init ar934x_get_pll_freq(u32 ref, u32 ref_div, u32 nint, u32 nfrac,
@@ -239,7 +231,7 @@ static u32 __init ar934x_get_pll_freq(u32 ref, u32 ref_div, u32 nint, u32 nfrac,
 	return ret;
 }
 
-static void __init ar934x_clocks_init(void)
+static void __init ar934x_clocks_init(void __iomem *pll_base)
 {
 	unsigned long ref_rate;
 	unsigned long cpu_rate;
@@ -258,6 +250,8 @@ static void __init ar934x_clocks_init(void)
 	else
 		ref_rate = 25 * 1000 * 1000;
 
+	ref_rate = ath79_setup_ref_clk(ref_rate);
+
 	pll = __raw_readl(dpll_base + AR934X_SRIF_CPU_DPLL2_REG);
 	if (pll & AR934X_SRIF_DPLL2_LOCAL_PLL) {
 		out_div = (pll >> AR934X_SRIF_DPLL2_OUTDIV_SHIFT) &
@@ -270,7 +264,7 @@ static void __init ar934x_clocks_init(void)
 			  AR934X_SRIF_DPLL1_REFDIV_MASK;
 		frac = 1 << 18;
 	} else {
-		pll = ath79_pll_rr(AR934X_PLL_CPU_CONFIG_REG);
+		pll = __raw_readl(pll_base + AR934X_PLL_CPU_CONFIG_REG);
 		out_div = (pll >> AR934X_PLL_CPU_CONFIG_OUTDIV_SHIFT) &
 			AR934X_PLL_CPU_CONFIG_OUTDIV_MASK;
 		ref_div = (pll >> AR934X_PLL_CPU_CONFIG_REFDIV_SHIFT) &
@@ -297,7 +291,7 @@ static void __init ar934x_clocks_init(void)
 			  AR934X_SRIF_DPLL1_REFDIV_MASK;
 		frac = 1 << 18;
 	} else {
-		pll = ath79_pll_rr(AR934X_PLL_DDR_CONFIG_REG);
+		pll = __raw_readl(pll_base + AR934X_PLL_DDR_CONFIG_REG);
 		out_div = (pll >> AR934X_PLL_DDR_CONFIG_OUTDIV_SHIFT) &
 			  AR934X_PLL_DDR_CONFIG_OUTDIV_MASK;
 		ref_div = (pll >> AR934X_PLL_DDR_CONFIG_REFDIV_SHIFT) &
@@ -312,7 +306,7 @@ static void __init ar934x_clocks_init(void)
 	ddr_pll = ar934x_get_pll_freq(ref_rate, ref_div, nint,
 				      nfrac, frac, out_div);
 
-	clk_ctrl = ath79_pll_rr(AR934X_PLL_CPU_DDR_CLK_CTRL_REG);
+	clk_ctrl = __raw_readl(pll_base + AR934X_PLL_CPU_DDR_CLK_CTRL_REG);
 
 	postdiv = (clk_ctrl >> AR934X_PLL_CPU_DDR_CLK_CTRL_CPU_POST_DIV_SHIFT) &
 		  AR934X_PLL_CPU_DDR_CLK_CTRL_CPU_POST_DIV_MASK;
@@ -344,18 +338,18 @@ static void __init ar934x_clocks_init(void)
 	else
 		ahb_rate = cpu_pll / (postdiv + 1);
 
-	ath79_add_sys_clkdev("ref", ref_rate);
-	clks[ATH79_CLK_CPU] = ath79_add_sys_clkdev("cpu", cpu_rate);
-	clks[ATH79_CLK_DDR] = ath79_add_sys_clkdev("ddr", ddr_rate);
-	clks[ATH79_CLK_AHB] = ath79_add_sys_clkdev("ahb", ahb_rate);
+	ath79_set_clk(ATH79_CLK_CPU, cpu_rate);
+	ath79_set_clk(ATH79_CLK_DDR, ddr_rate);
+	ath79_set_clk(ATH79_CLK_AHB, ahb_rate);
 
-	clk_add_alias("wdt", NULL, "ref", NULL);
-	clk_add_alias("uart", NULL, "ref", NULL);
+	clk_ctrl = __raw_readl(pll_base + AR934X_PLL_SWITCH_CLOCK_CONTROL_REG);
+	if (clk_ctrl & AR934X_PLL_SWITCH_CLOCK_CONTROL_MDIO_CLK_SEL)
+		ath79_set_clk(ATH79_CLK_MDIO, 100 * 1000 * 1000);
 
 	iounmap(dpll_base);
 }
 
-static void __init qca953x_clocks_init(void)
+static void __init qca953x_clocks_init(void __iomem *pll_base)
 {
 	unsigned long ref_rate;
 	unsigned long cpu_rate;
@@ -371,7 +365,9 @@ static void __init qca953x_clocks_init(void)
 	else
 		ref_rate = 25 * 1000 * 1000;
 
-	pll = ath79_pll_rr(QCA953X_PLL_CPU_CONFIG_REG);
+	ref_rate = ath79_setup_ref_clk(ref_rate);
+
+	pll = __raw_readl(pll_base + QCA953X_PLL_CPU_CONFIG_REG);
 	out_div = (pll >> QCA953X_PLL_CPU_CONFIG_OUTDIV_SHIFT) &
 		  QCA953X_PLL_CPU_CONFIG_OUTDIV_MASK;
 	ref_div = (pll >> QCA953X_PLL_CPU_CONFIG_REFDIV_SHIFT) &
@@ -385,7 +381,7 @@ static void __init qca953x_clocks_init(void)
 	cpu_pll += frac * (ref_rate >> 6) / ref_div;
 	cpu_pll /= (1 << out_div);
 
-	pll = ath79_pll_rr(QCA953X_PLL_DDR_CONFIG_REG);
+	pll = __raw_readl(pll_base + QCA953X_PLL_DDR_CONFIG_REG);
 	out_div = (pll >> QCA953X_PLL_DDR_CONFIG_OUTDIV_SHIFT) &
 		  QCA953X_PLL_DDR_CONFIG_OUTDIV_MASK;
 	ref_div = (pll >> QCA953X_PLL_DDR_CONFIG_REFDIV_SHIFT) &
@@ -399,7 +395,7 @@ static void __init qca953x_clocks_init(void)
 	ddr_pll += frac * (ref_rate >> 6) / (ref_div << 4);
 	ddr_pll /= (1 << out_div);
 
-	clk_ctrl = ath79_pll_rr(QCA953X_PLL_CLK_CTRL_REG);
+	clk_ctrl = __raw_readl(pll_base + QCA953X_PLL_CLK_CTRL_REG);
 
 	postdiv = (clk_ctrl >> QCA953X_PLL_CLK_CTRL_CPU_POST_DIV_SHIFT) &
 		  QCA953X_PLL_CLK_CTRL_CPU_POST_DIV_MASK;
@@ -431,16 +427,12 @@ static void __init qca953x_clocks_init(void)
 	else
 		ahb_rate = cpu_pll / (postdiv + 1);
 
-	ath79_add_sys_clkdev("ref", ref_rate);
-	ath79_add_sys_clkdev("cpu", cpu_rate);
-	ath79_add_sys_clkdev("ddr", ddr_rate);
-	ath79_add_sys_clkdev("ahb", ahb_rate);
-
-	clk_add_alias("wdt", NULL, "ref", NULL);
-	clk_add_alias("uart", NULL, "ref", NULL);
+	ath79_set_clk(ATH79_CLK_CPU, cpu_rate);
+	ath79_set_clk(ATH79_CLK_DDR, ddr_rate);
+	ath79_set_clk(ATH79_CLK_AHB, ahb_rate);
 }
 
-static void __init qca955x_clocks_init(void)
+static void __init qca955x_clocks_init(void __iomem *pll_base)
 {
 	unsigned long ref_rate;
 	unsigned long cpu_rate;
@@ -456,7 +448,9 @@ static void __init qca955x_clocks_init(void)
 	else
 		ref_rate = 25 * 1000 * 1000;
 
-	pll = ath79_pll_rr(QCA955X_PLL_CPU_CONFIG_REG);
+	ref_rate = ath79_setup_ref_clk(ref_rate);
+
+	pll = __raw_readl(pll_base + QCA955X_PLL_CPU_CONFIG_REG);
 	out_div = (pll >> QCA955X_PLL_CPU_CONFIG_OUTDIV_SHIFT) &
 		  QCA955X_PLL_CPU_CONFIG_OUTDIV_MASK;
 	ref_div = (pll >> QCA955X_PLL_CPU_CONFIG_REFDIV_SHIFT) &
@@ -470,7 +464,7 @@ static void __init qca955x_clocks_init(void)
 	cpu_pll += frac * ref_rate / (ref_div * (1 << 6));
 	cpu_pll /= (1 << out_div);
 
-	pll = ath79_pll_rr(QCA955X_PLL_DDR_CONFIG_REG);
+	pll = __raw_readl(pll_base + QCA955X_PLL_DDR_CONFIG_REG);
 	out_div = (pll >> QCA955X_PLL_DDR_CONFIG_OUTDIV_SHIFT) &
 		  QCA955X_PLL_DDR_CONFIG_OUTDIV_MASK;
 	ref_div = (pll >> QCA955X_PLL_DDR_CONFIG_REFDIV_SHIFT) &
@@ -484,7 +478,7 @@ static void __init qca955x_clocks_init(void)
 	ddr_pll += frac * ref_rate / (ref_div * (1 << 10));
 	ddr_pll /= (1 << out_div);
 
-	clk_ctrl = ath79_pll_rr(QCA955X_PLL_CLK_CTRL_REG);
+	clk_ctrl = __raw_readl(pll_base + QCA955X_PLL_CLK_CTRL_REG);
 
 	postdiv = (clk_ctrl >> QCA955X_PLL_CLK_CTRL_CPU_POST_DIV_SHIFT) &
 		  QCA955X_PLL_CLK_CTRL_CPU_POST_DIV_MASK;
@@ -516,16 +510,12 @@ static void __init qca955x_clocks_init(void)
 	else
 		ahb_rate = cpu_pll / (postdiv + 1);
 
-	ath79_add_sys_clkdev("ref", ref_rate);
-	clks[ATH79_CLK_CPU] = ath79_add_sys_clkdev("cpu", cpu_rate);
-	clks[ATH79_CLK_DDR] = ath79_add_sys_clkdev("ddr", ddr_rate);
-	clks[ATH79_CLK_AHB] = ath79_add_sys_clkdev("ahb", ahb_rate);
-
-	clk_add_alias("wdt", NULL, "ref", NULL);
-	clk_add_alias("uart", NULL, "ref", NULL);
+	ath79_set_clk(ATH79_CLK_CPU, cpu_rate);
+	ath79_set_clk(ATH79_CLK_DDR, ddr_rate);
+	ath79_set_clk(ATH79_CLK_AHB, ahb_rate);
 }
 
-static void __init qca956x_clocks_init(void)
+static void __init qca956x_clocks_init(void __iomem *pll_base)
 {
 	unsigned long ref_rate;
 	unsigned long cpu_rate;
@@ -551,13 +541,15 @@ static void __init qca956x_clocks_init(void)
 	else
 		ref_rate = 25 * 1000 * 1000;
 
-	pll = ath79_pll_rr(QCA956X_PLL_CPU_CONFIG_REG);
+	ref_rate = ath79_setup_ref_clk(ref_rate);
+
+	pll = __raw_readl(pll_base + QCA956X_PLL_CPU_CONFIG_REG);
 	out_div = (pll >> QCA956X_PLL_CPU_CONFIG_OUTDIV_SHIFT) &
 		  QCA956X_PLL_CPU_CONFIG_OUTDIV_MASK;
 	ref_div = (pll >> QCA956X_PLL_CPU_CONFIG_REFDIV_SHIFT) &
 		  QCA956X_PLL_CPU_CONFIG_REFDIV_MASK;
 
-	pll = ath79_pll_rr(QCA956X_PLL_CPU_CONFIG1_REG);
+	pll = __raw_readl(pll_base + QCA956X_PLL_CPU_CONFIG1_REG);
 	nint = (pll >> QCA956X_PLL_CPU_CONFIG1_NINT_SHIFT) &
 	       QCA956X_PLL_CPU_CONFIG1_NINT_MASK;
 	hfrac = (pll >> QCA956X_PLL_CPU_CONFIG1_NFRAC_H_SHIFT) &
@@ -570,12 +562,12 @@ static void __init qca956x_clocks_init(void)
 	cpu_pll += (hfrac >> 13) * ref_rate / ref_div;
 	cpu_pll /= (1 << out_div);
 
-	pll = ath79_pll_rr(QCA956X_PLL_DDR_CONFIG_REG);
+	pll = __raw_readl(pll_base + QCA956X_PLL_DDR_CONFIG_REG);
 	out_div = (pll >> QCA956X_PLL_DDR_CONFIG_OUTDIV_SHIFT) &
 		  QCA956X_PLL_DDR_CONFIG_OUTDIV_MASK;
 	ref_div = (pll >> QCA956X_PLL_DDR_CONFIG_REFDIV_SHIFT) &
 		  QCA956X_PLL_DDR_CONFIG_REFDIV_MASK;
-	pll = ath79_pll_rr(QCA956X_PLL_DDR_CONFIG1_REG);
+	pll = __raw_readl(pll_base + QCA956X_PLL_DDR_CONFIG1_REG);
 	nint = (pll >> QCA956X_PLL_DDR_CONFIG1_NINT_SHIFT) &
 	       QCA956X_PLL_DDR_CONFIG1_NINT_MASK;
 	hfrac = (pll >> QCA956X_PLL_DDR_CONFIG1_NFRAC_H_SHIFT) &
@@ -588,7 +580,7 @@ static void __init qca956x_clocks_init(void)
 	ddr_pll += (hfrac >> 13) * ref_rate / ref_div;
 	ddr_pll /= (1 << out_div);
 
-	clk_ctrl = ath79_pll_rr(QCA956X_PLL_CLK_CTRL_REG);
+	clk_ctrl = __raw_readl(pll_base + QCA956X_PLL_CLK_CTRL_REG);
 
 	postdiv = (clk_ctrl >> QCA956X_PLL_CLK_CTRL_CPU_POST_DIV_SHIFT) &
 		  QCA956X_PLL_CLK_CTRL_CPU_POST_DIV_MASK;
@@ -620,72 +612,19 @@ static void __init qca956x_clocks_init(void)
 	else
 		ahb_rate = cpu_pll / (postdiv + 1);
 
-	ath79_add_sys_clkdev("ref", ref_rate);
-	ath79_add_sys_clkdev("cpu", cpu_rate);
-	ath79_add_sys_clkdev("ddr", ddr_rate);
-	ath79_add_sys_clkdev("ahb", ahb_rate);
-
-	clk_add_alias("wdt", NULL, "ref", NULL);
-	clk_add_alias("uart", NULL, "ref", NULL);
-}
-
-void __init ath79_clocks_init(void)
-{
-	if (soc_is_ar71xx())
-		ar71xx_clocks_init();
-	else if (soc_is_ar724x() || soc_is_ar913x())
-		ar724x_clocks_init();
-	else if (soc_is_ar933x())
-		ar933x_clocks_init();
-	else if (soc_is_ar934x())
-		ar934x_clocks_init();
-	else if (soc_is_qca953x())
-		qca953x_clocks_init();
-	else if (soc_is_qca955x())
-		qca955x_clocks_init();
-	else if (soc_is_qca956x() || soc_is_tp9343())
-		qca956x_clocks_init();
-	else
-		BUG();
-}
-
-unsigned long __init
-ath79_get_sys_clk_rate(const char *id)
-{
-	struct clk *clk;
-	unsigned long rate;
-
-	clk = clk_get(NULL, id);
-	if (IS_ERR(clk))
-		panic("unable to get %s clock, err=%d", id, (int) PTR_ERR(clk));
-
-	rate = clk_get_rate(clk);
-	clk_put(clk);
-
-	return rate;
+	ath79_set_clk(ATH79_CLK_CPU, cpu_rate);
+	ath79_set_clk(ATH79_CLK_DDR, ddr_rate);
+	ath79_set_clk(ATH79_CLK_AHB, ahb_rate);
 }
 
-#ifdef CONFIG_OF
 static void __init ath79_clocks_init_dt(struct device_node *np)
 {
-	of_clk_add_provider(np, of_clk_src_onecell_get, &clk_data);
-}
-
-CLK_OF_DECLARE(ar7100, "qca,ar7100-pll", ath79_clocks_init_dt);
-CLK_OF_DECLARE(ar7240, "qca,ar7240-pll", ath79_clocks_init_dt);
-CLK_OF_DECLARE(ar9340, "qca,ar9340-pll", ath79_clocks_init_dt);
-CLK_OF_DECLARE(ar9550, "qca,qca9550-pll", ath79_clocks_init_dt);
-
-static void __init ath79_clocks_init_dt_ng(struct device_node *np)
-{
 	struct clk *ref_clk;
 	void __iomem *pll_base;
 
 	ref_clk = of_clk_get(np, 0);
-	if (IS_ERR(ref_clk)) {
-		pr_err("%pOF: of_clk_get failed\n", np);
-		goto err;
-	}
+	if (!IS_ERR(ref_clk))
+		clks[ATH79_CLK_REF] = ref_clk;
 
 	pll_base = of_iomap(np, 0);
 	if (!pll_base) {
@@ -693,14 +632,24 @@ static void __init ath79_clocks_init_dt_ng(struct device_node *np)
 		goto err_clk;
 	}
 
-	if (of_device_is_compatible(np, "qca,ar9130-pll"))
-		ar724x_clk_init(ref_clk, pll_base);
+	if (of_device_is_compatible(np, "qca,ar7100-pll"))
+		ar71xx_clocks_init(pll_base);
+	else if (of_device_is_compatible(np, "qca,ar7240-pll") ||
+		 of_device_is_compatible(np, "qca,ar9130-pll"))
+		ar724x_clocks_init(pll_base);
 	else if (of_device_is_compatible(np, "qca,ar9330-pll"))
-		ar9330_clk_init(ref_clk, pll_base);
-	else {
-		pr_err("%pOF: could not find any appropriate clk_init()\n", np);
-		goto err_iounmap;
-	}
+		ar933x_clocks_init(pll_base);
+	else if (of_device_is_compatible(np, "qca,ar9340-pll"))
+		ar934x_clocks_init(pll_base);
+	else if (of_device_is_compatible(np, "qca,qca9530-pll"))
+		qca953x_clocks_init(pll_base);
+	else if (of_device_is_compatible(np, "qca,qca9550-pll"))
+		qca955x_clocks_init(pll_base);
+	else if (of_device_is_compatible(np, "qca,qca9560-pll"))
+		qca956x_clocks_init(pll_base);
+
+	if (!clks[ATH79_CLK_MDIO])
+		clks[ATH79_CLK_MDIO] = clks[ATH79_CLK_REF];
 
 	if (of_clk_add_provider(np, of_clk_src_onecell_get, &clk_data)) {
 		pr_err("%pOF: could not register clk provider\n", np);
@@ -714,10 +663,13 @@ err_iounmap:
 
 err_clk:
 	clk_put(ref_clk);
-
-err:
-	return;
 }
-CLK_OF_DECLARE(ar9130_clk, "qca,ar9130-pll", ath79_clocks_init_dt_ng);
-CLK_OF_DECLARE(ar9330_clk, "qca,ar9330-pll", ath79_clocks_init_dt_ng);
-#endif
+
+CLK_OF_DECLARE(ar7100_clk, "qca,ar7100-pll", ath79_clocks_init_dt);
+CLK_OF_DECLARE(ar7240_clk, "qca,ar7240-pll", ath79_clocks_init_dt);
+CLK_OF_DECLARE(ar9130_clk, "qca,ar9130-pll", ath79_clocks_init_dt);
+CLK_OF_DECLARE(ar9330_clk, "qca,ar9330-pll", ath79_clocks_init_dt);
+CLK_OF_DECLARE(ar9340_clk, "qca,ar9340-pll", ath79_clocks_init_dt);
+CLK_OF_DECLARE(ar9530_clk, "qca,qca9530-pll", ath79_clocks_init_dt);
+CLK_OF_DECLARE(ar9550_clk, "qca,qca9550-pll", ath79_clocks_init_dt);
+CLK_OF_DECLARE(ar9560_clk, "qca,qca9560-pll", ath79_clocks_init_dt);
diff --git a/arch/mips/ath79/common.h b/arch/mips/ath79/common.h
index 870c6b2e97e8..25b96f59e8e8 100644
--- a/arch/mips/ath79/common.h
+++ b/arch/mips/ath79/common.h
@@ -19,11 +19,6 @@
 #define ATH79_MEM_SIZE_MIN	(2 * 1024 * 1024)
 #define ATH79_MEM_SIZE_MAX	(256 * 1024 * 1024)
 
-void ath79_clocks_init(void);
-unsigned long ath79_get_sys_clk_rate(const char *id);
-
 void ath79_ddr_ctrl_init(void);
 
-void ath79_gpio_init(void);
-
 #endif /* __ATH79_COMMON_H */
diff --git a/arch/mips/ath79/dev-common.c b/arch/mips/ath79/dev-common.c
deleted file mode 100644
index 9d0172a4dc69..000000000000
--- a/arch/mips/ath79/dev-common.c
+++ /dev/null
@@ -1,159 +0,0 @@
-/*
- *  Atheros AR71XX/AR724X/AR913X common devices
- *
- *  Copyright (C) 2008-2011 Gabor Juhos <juhosg@openwrt.org>
- *  Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
- *
- *  Parts of this file are based on Atheros' 2.6.15 BSP
- *
- *  This program is free software; you can redistribute it and/or modify it
- *  under the terms of the GNU General Public License version 2 as published
- *  by the Free Software Foundation.
- */
-
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/platform_device.h>
-#include <linux/platform_data/gpio-ath79.h>
-#include <linux/serial_8250.h>
-#include <linux/clk.h>
-#include <linux/err.h>
-
-#include <asm/mach-ath79/ath79.h>
-#include <asm/mach-ath79/ar71xx_regs.h>
-#include "common.h"
-#include "dev-common.h"
-
-static struct resource ath79_uart_resources[] = {
-	{
-		.start	= AR71XX_UART_BASE,
-		.end	= AR71XX_UART_BASE + AR71XX_UART_SIZE - 1,
-		.flags	= IORESOURCE_MEM,
-	},
-};
-
-#define AR71XX_UART_FLAGS (UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_IOREMAP)
-static struct plat_serial8250_port ath79_uart_data[] = {
-	{
-		.mapbase	= AR71XX_UART_BASE,
-		.irq		= ATH79_MISC_IRQ(3),
-		.flags		= AR71XX_UART_FLAGS,
-		.iotype		= UPIO_MEM32,
-		.regshift	= 2,
-	}, {
-		/* terminating entry */
-	}
-};
-
-static struct platform_device ath79_uart_device = {
-	.name		= "serial8250",
-	.id		= PLAT8250_DEV_PLATFORM,
-	.resource	= ath79_uart_resources,
-	.num_resources	= ARRAY_SIZE(ath79_uart_resources),
-	.dev = {
-		.platform_data	= ath79_uart_data
-	},
-};
-
-static struct resource ar933x_uart_resources[] = {
-	{
-		.start	= AR933X_UART_BASE,
-		.end	= AR933X_UART_BASE + AR71XX_UART_SIZE - 1,
-		.flags	= IORESOURCE_MEM,
-	},
-	{
-		.start	= ATH79_MISC_IRQ(3),
-		.end	= ATH79_MISC_IRQ(3),
-		.flags	= IORESOURCE_IRQ,
-	},
-};
-
-static struct platform_device ar933x_uart_device = {
-	.name		= "ar933x-uart",
-	.id		= -1,
-	.resource	= ar933x_uart_resources,
-	.num_resources	= ARRAY_SIZE(ar933x_uart_resources),
-};
-
-void __init ath79_register_uart(void)
-{
-	unsigned long uart_clk_rate;
-
-	uart_clk_rate = ath79_get_sys_clk_rate("uart");
-
-	if (soc_is_ar71xx() ||
-	    soc_is_ar724x() ||
-	    soc_is_ar913x() ||
-	    soc_is_ar934x() ||
-	    soc_is_qca955x()) {
-		ath79_uart_data[0].uartclk = uart_clk_rate;
-		platform_device_register(&ath79_uart_device);
-	} else if (soc_is_ar933x()) {
-		platform_device_register(&ar933x_uart_device);
-	} else {
-		BUG();
-	}
-}
-
-void __init ath79_register_wdt(void)
-{
-	struct resource res;
-
-	memset(&res, 0, sizeof(res));
-
-	res.flags = IORESOURCE_MEM;
-	res.start = AR71XX_RESET_BASE + AR71XX_RESET_REG_WDOG_CTRL;
-	res.end = res.start + 0x8 - 1;
-
-	platform_device_register_simple("ath79-wdt", -1, &res, 1);
-}
-
-static struct ath79_gpio_platform_data ath79_gpio_pdata;
-
-static struct resource ath79_gpio_resources[] = {
-	{
-		.flags = IORESOURCE_MEM,
-		.start = AR71XX_GPIO_BASE,
-		.end = AR71XX_GPIO_BASE + AR71XX_GPIO_SIZE - 1,
-	},
-	{
-		.start	= ATH79_MISC_IRQ(2),
-		.end	= ATH79_MISC_IRQ(2),
-		.flags	= IORESOURCE_IRQ,
-	},
-};
-
-static struct platform_device ath79_gpio_device = {
-	.name		= "ath79-gpio",
-	.id		= -1,
-	.resource	= ath79_gpio_resources,
-	.num_resources	= ARRAY_SIZE(ath79_gpio_resources),
-	.dev = {
-		.platform_data	= &ath79_gpio_pdata
-	},
-};
-
-void __init ath79_gpio_init(void)
-{
-	if (soc_is_ar71xx()) {
-		ath79_gpio_pdata.ngpios = AR71XX_GPIO_COUNT;
-	} else if (soc_is_ar7240()) {
-		ath79_gpio_pdata.ngpios = AR7240_GPIO_COUNT;
-	} else if (soc_is_ar7241() || soc_is_ar7242()) {
-		ath79_gpio_pdata.ngpios = AR7241_GPIO_COUNT;
-	} else if (soc_is_ar913x()) {
-		ath79_gpio_pdata.ngpios = AR913X_GPIO_COUNT;
-	} else if (soc_is_ar933x()) {
-		ath79_gpio_pdata.ngpios = AR933X_GPIO_COUNT;
-	} else if (soc_is_ar934x()) {
-		ath79_gpio_pdata.ngpios = AR934X_GPIO_COUNT;
-		ath79_gpio_pdata.oe_inverted = 1;
-	} else if (soc_is_qca955x()) {
-		ath79_gpio_pdata.ngpios = QCA955X_GPIO_COUNT;
-		ath79_gpio_pdata.oe_inverted = 1;
-	} else {
-		BUG();
-	}
-
-	platform_device_register(&ath79_gpio_device);
-}
diff --git a/arch/mips/ath79/dev-common.h b/arch/mips/ath79/dev-common.h
deleted file mode 100644
index 0f514e1affce..000000000000
--- a/arch/mips/ath79/dev-common.h
+++ /dev/null
@@ -1,18 +0,0 @@
-/*
- *  Atheros AR71XX/AR724X/AR913X common devices
- *
- *  Copyright (C) 2008-2010 Gabor Juhos <juhosg@openwrt.org>
- *  Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
- *
- *  This program is free software; you can redistribute it and/or modify it
- *  under the terms of the GNU General Public License version 2 as published
- *  by the Free Software Foundation.
- */
-
-#ifndef _ATH79_DEV_COMMON_H
-#define _ATH79_DEV_COMMON_H
-
-void ath79_register_uart(void);
-void ath79_register_wdt(void);
-
-#endif /* _ATH79_DEV_COMMON_H */
diff --git a/arch/mips/ath79/dev-gpio-buttons.c b/arch/mips/ath79/dev-gpio-buttons.c
deleted file mode 100644
index 366b35fb164d..000000000000
--- a/arch/mips/ath79/dev-gpio-buttons.c
+++ /dev/null
@@ -1,56 +0,0 @@
-/*
- *  Atheros AR71XX/AR724X/AR913X GPIO button support
- *
- *  Copyright (C) 2008-2010 Gabor Juhos <juhosg@openwrt.org>
- *  Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
- *
- *  This program is free software; you can redistribute it and/or modify it
- *  under the terms of the GNU General Public License version 2 as published
- *  by the Free Software Foundation.
- */
-
-#include "linux/init.h"
-#include "linux/slab.h"
-#include <linux/platform_device.h>
-
-#include "dev-gpio-buttons.h"
-
-void __init ath79_register_gpio_keys_polled(int id,
-					    unsigned poll_interval,
-					    unsigned nbuttons,
-					    struct gpio_keys_button *buttons)
-{
-	struct platform_device *pdev;
-	struct gpio_keys_platform_data pdata;
-	struct gpio_keys_button *p;
-	int err;
-
-	p = kmemdup(buttons, nbuttons * sizeof(*p), GFP_KERNEL);
-	if (!p)
-		return;
-
-	pdev = platform_device_alloc("gpio-keys-polled", id);
-	if (!pdev)
-		goto err_free_buttons;
-
-	memset(&pdata, 0, sizeof(pdata));
-	pdata.poll_interval = poll_interval;
-	pdata.nbuttons = nbuttons;
-	pdata.buttons = p;
-
-	err = platform_device_add_data(pdev, &pdata, sizeof(pdata));
-	if (err)
-		goto err_put_pdev;
-
-	err = platform_device_add(pdev);
-	if (err)
-		goto err_put_pdev;
-
-	return;
-
-err_put_pdev:
-	platform_device_put(pdev);
-
-err_free_buttons:
-	kfree(p);
-}
diff --git a/arch/mips/ath79/dev-gpio-buttons.h b/arch/mips/ath79/dev-gpio-buttons.h
deleted file mode 100644
index 481847ac1cba..000000000000
--- a/arch/mips/ath79/dev-gpio-buttons.h
+++ /dev/null
@@ -1,23 +0,0 @@
-/*
- *  Atheros AR71XX/AR724X/AR913X GPIO button support
- *
- *  Copyright (C) 2008-2010 Gabor Juhos <juhosg@openwrt.org>
- *  Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
- *
- *  This program is free software; you can redistribute it and/or modify it
- *  under the terms of the GNU General Public License version 2 as published
- *  by the Free Software Foundation.
- */
-
-#ifndef _ATH79_DEV_GPIO_BUTTONS_H
-#define _ATH79_DEV_GPIO_BUTTONS_H
-
-#include <linux/input.h>
-#include <linux/gpio_keys.h>
-
-void ath79_register_gpio_keys_polled(int id,
-				     unsigned poll_interval,
-				     unsigned nbuttons,
-				     struct gpio_keys_button *buttons);
-
-#endif /* _ATH79_DEV_GPIO_BUTTONS_H */
diff --git a/arch/mips/ath79/dev-leds-gpio.c b/arch/mips/ath79/dev-leds-gpio.c
deleted file mode 100644
index dcb1debcefb8..000000000000
--- a/arch/mips/ath79/dev-leds-gpio.c
+++ /dev/null
@@ -1,54 +0,0 @@
-/*
- *  Atheros AR71XX/AR724X/AR913X common GPIO LEDs support
- *
- *  Copyright (C) 2008-2010 Gabor Juhos <juhosg@openwrt.org>
- *  Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
- *
- *  This program is free software; you can redistribute it and/or modify it
- *  under the terms of the GNU General Public License version 2 as published
- *  by the Free Software Foundation.
- */
-
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <linux/platform_device.h>
-
-#include "dev-leds-gpio.h"
-
-void __init ath79_register_leds_gpio(int id,
-				     unsigned num_leds,
-				     struct gpio_led *leds)
-{
-	struct platform_device *pdev;
-	struct gpio_led_platform_data pdata;
-	struct gpio_led *p;
-	int err;
-
-	p = kmemdup(leds, num_leds * sizeof(*p), GFP_KERNEL);
-	if (!p)
-		return;
-
-	pdev = platform_device_alloc("leds-gpio", id);
-	if (!pdev)
-		goto err_free_leds;
-
-	memset(&pdata, 0, sizeof(pdata));
-	pdata.num_leds = num_leds;
-	pdata.leds = p;
-
-	err = platform_device_add_data(pdev, &pdata, sizeof(pdata));
-	if (err)
-		goto err_put_pdev;
-
-	err = platform_device_add(pdev);
-	if (err)
-		goto err_put_pdev;
-
-	return;
-
-err_put_pdev:
-	platform_device_put(pdev);
-
-err_free_leds:
-	kfree(p);
-}
diff --git a/arch/mips/ath79/dev-leds-gpio.h b/arch/mips/ath79/dev-leds-gpio.h
deleted file mode 100644
index 6e5d8851ebcf..000000000000
--- a/arch/mips/ath79/dev-leds-gpio.h
+++ /dev/null
@@ -1,21 +0,0 @@
-/*
- *  Atheros AR71XX/AR724X/AR913X common GPIO LEDs support
- *
- *  Copyright (C) 2008-2010 Gabor Juhos <juhosg@openwrt.org>
- *  Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
- *
- *  This program is free software; you can redistribute it and/or modify it
- *  under the terms of the GNU General Public License version 2 as published
- *  by the Free Software Foundation.
- */
-
-#ifndef _ATH79_DEV_LEDS_GPIO_H
-#define _ATH79_DEV_LEDS_GPIO_H
-
-#include <linux/leds.h>
-
-void ath79_register_leds_gpio(int id,
-			      unsigned num_leds,
-			      struct gpio_led *leds);
-
-#endif /* _ATH79_DEV_LEDS_GPIO_H */
diff --git a/arch/mips/ath79/dev-spi.c b/arch/mips/ath79/dev-spi.c
deleted file mode 100644
index aa30163efbfd..000000000000
--- a/arch/mips/ath79/dev-spi.c
+++ /dev/null
@@ -1,38 +0,0 @@
-/*
- *  Atheros AR71XX/AR724X/AR913X SPI controller device
- *
- *  Copyright (C) 2008-2010 Gabor Juhos <juhosg@openwrt.org>
- *  Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
- *
- *  This program is free software; you can redistribute it and/or modify it
- *  under the terms of the GNU General Public License version 2 as published
- *  by the Free Software Foundation.
- */
-
-#include <linux/platform_device.h>
-#include <asm/mach-ath79/ar71xx_regs.h>
-#include "dev-spi.h"
-
-static struct resource ath79_spi_resources[] = {
-	{
-		.start	= AR71XX_SPI_BASE,
-		.end	= AR71XX_SPI_BASE + AR71XX_SPI_SIZE - 1,
-		.flags	= IORESOURCE_MEM,
-	},
-};
-
-static struct platform_device ath79_spi_device = {
-	.name		= "ath79-spi",
-	.id		= -1,
-	.resource	= ath79_spi_resources,
-	.num_resources	= ARRAY_SIZE(ath79_spi_resources),
-};
-
-void __init ath79_register_spi(struct ath79_spi_platform_data *pdata,
-			       struct spi_board_info const *info,
-			       unsigned n)
-{
-	spi_register_board_info(info, n);
-	ath79_spi_device.dev.platform_data = pdata;
-	platform_device_register(&ath79_spi_device);
-}
diff --git a/arch/mips/ath79/dev-spi.h b/arch/mips/ath79/dev-spi.h
deleted file mode 100644
index 6e15bc8651be..000000000000
--- a/arch/mips/ath79/dev-spi.h
+++ /dev/null
@@ -1,22 +0,0 @@
-/*
- *  Atheros AR71XX/AR724X/AR913X SPI controller device
- *
- *  Copyright (C) 2008-2010 Gabor Juhos <juhosg@openwrt.org>
- *  Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
- *
- *  This program is free software; you can redistribute it and/or modify it
- *  under the terms of the GNU General Public License version 2 as published
- *  by the Free Software Foundation.
- */
-
-#ifndef _ATH79_DEV_SPI_H
-#define _ATH79_DEV_SPI_H
-
-#include <linux/spi/spi.h>
-#include <linux/platform_data/spi-ath79.h>
-
-void ath79_register_spi(struct ath79_spi_platform_data *pdata,
-			 struct spi_board_info const *info,
-			 unsigned n);
-
-#endif /* _ATH79_DEV_SPI_H */
diff --git a/arch/mips/ath79/dev-usb.c b/arch/mips/ath79/dev-usb.c
deleted file mode 100644
index 8227265bcc2d..000000000000
--- a/arch/mips/ath79/dev-usb.c
+++ /dev/null
@@ -1,242 +0,0 @@
-/*
- *  Atheros AR7XXX/AR9XXX USB Host Controller device
- *
- *  Copyright (C) 2008-2011 Gabor Juhos <juhosg@openwrt.org>
- *  Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
- *
- *  Parts of this file are based on Atheros' 2.6.15 BSP
- *
- *  This program is free software; you can redistribute it and/or modify it
- *  under the terms of the GNU General Public License version 2 as published
- *  by the Free Software Foundation.
- */
-
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/delay.h>
-#include <linux/irq.h>
-#include <linux/dma-mapping.h>
-#include <linux/platform_device.h>
-#include <linux/usb/ehci_pdriver.h>
-#include <linux/usb/ohci_pdriver.h>
-
-#include <asm/mach-ath79/ath79.h>
-#include <asm/mach-ath79/ar71xx_regs.h>
-#include "common.h"
-#include "dev-usb.h"
-
-static u64 ath79_usb_dmamask = DMA_BIT_MASK(32);
-
-static struct usb_ohci_pdata ath79_ohci_pdata = {
-};
-
-static struct usb_ehci_pdata ath79_ehci_pdata_v1 = {
-	.has_synopsys_hc_bug	= 1,
-};
-
-static struct usb_ehci_pdata ath79_ehci_pdata_v2 = {
-	.caps_offset		= 0x100,
-	.has_tt			= 1,
-};
-
-static void __init ath79_usb_register(const char *name, int id,
-				      unsigned long base, unsigned long size,
-				      int irq, const void *data,
-				      size_t data_size)
-{
-	struct resource res[2];
-	struct platform_device *pdev;
-
-	memset(res, 0, sizeof(res));
-
-	res[0].flags = IORESOURCE_MEM;
-	res[0].start = base;
-	res[0].end = base + size - 1;
-
-	res[1].flags = IORESOURCE_IRQ;
-	res[1].start = irq;
-	res[1].end = irq;
-
-	pdev = platform_device_register_resndata(NULL, name, id,
-						 res, ARRAY_SIZE(res),
-						 data, data_size);
-
-	if (IS_ERR(pdev)) {
-		pr_err("ath79: unable to register USB at %08lx, err=%d\n",
-		       base, (int) PTR_ERR(pdev));
-		return;
-	}
-
-	pdev->dev.dma_mask = &ath79_usb_dmamask;
-	pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
-}
-
-#define AR71XX_USB_RESET_MASK	(AR71XX_RESET_USB_HOST | \
-				 AR71XX_RESET_USB_PHY | \
-				 AR71XX_RESET_USB_OHCI_DLL)
-
-static void __init ath79_usb_setup(void)
-{
-	void __iomem *usb_ctrl_base;
-
-	ath79_device_reset_set(AR71XX_USB_RESET_MASK);
-	mdelay(1000);
-	ath79_device_reset_clear(AR71XX_USB_RESET_MASK);
-
-	usb_ctrl_base = ioremap(AR71XX_USB_CTRL_BASE, AR71XX_USB_CTRL_SIZE);
-
-	/* Turning on the Buff and Desc swap bits */
-	__raw_writel(0xf0000, usb_ctrl_base + AR71XX_USB_CTRL_REG_CONFIG);
-
-	/* WAR for HW bug. Here it adjusts the duration between two SOFS */
-	__raw_writel(0x20c00, usb_ctrl_base + AR71XX_USB_CTRL_REG_FLADJ);
-
-	iounmap(usb_ctrl_base);
-
-	mdelay(900);
-
-	ath79_usb_register("ohci-platform", -1,
-			   AR71XX_OHCI_BASE, AR71XX_OHCI_SIZE,
-			   ATH79_MISC_IRQ(6),
-			   &ath79_ohci_pdata, sizeof(ath79_ohci_pdata));
-
-	ath79_usb_register("ehci-platform", -1,
-			   AR71XX_EHCI_BASE, AR71XX_EHCI_SIZE,
-			   ATH79_CPU_IRQ(3),
-			   &ath79_ehci_pdata_v1, sizeof(ath79_ehci_pdata_v1));
-}
-
-static void __init ar7240_usb_setup(void)
-{
-	void __iomem *usb_ctrl_base;
-
-	ath79_device_reset_clear(AR7240_RESET_OHCI_DLL);
-	ath79_device_reset_set(AR7240_RESET_USB_HOST);
-
-	mdelay(1000);
-
-	ath79_device_reset_set(AR7240_RESET_OHCI_DLL);
-	ath79_device_reset_clear(AR7240_RESET_USB_HOST);
-
-	usb_ctrl_base = ioremap(AR7240_USB_CTRL_BASE, AR7240_USB_CTRL_SIZE);
-
-	/* WAR for HW bug. Here it adjusts the duration between two SOFS */
-	__raw_writel(0x3, usb_ctrl_base + AR71XX_USB_CTRL_REG_FLADJ);
-
-	iounmap(usb_ctrl_base);
-
-	ath79_usb_register("ohci-platform", -1,
-			   AR7240_OHCI_BASE, AR7240_OHCI_SIZE,
-			   ATH79_CPU_IRQ(3),
-			   &ath79_ohci_pdata, sizeof(ath79_ohci_pdata));
-}
-
-static void __init ar724x_usb_setup(void)
-{
-	ath79_device_reset_set(AR724X_RESET_USBSUS_OVERRIDE);
-	mdelay(10);
-
-	ath79_device_reset_clear(AR724X_RESET_USB_HOST);
-	mdelay(10);
-
-	ath79_device_reset_clear(AR724X_RESET_USB_PHY);
-	mdelay(10);
-
-	ath79_usb_register("ehci-platform", -1,
-			   AR724X_EHCI_BASE, AR724X_EHCI_SIZE,
-			   ATH79_CPU_IRQ(3),
-			   &ath79_ehci_pdata_v2, sizeof(ath79_ehci_pdata_v2));
-}
-
-static void __init ar913x_usb_setup(void)
-{
-	ath79_device_reset_set(AR913X_RESET_USBSUS_OVERRIDE);
-	mdelay(10);
-
-	ath79_device_reset_clear(AR913X_RESET_USB_HOST);
-	mdelay(10);
-
-	ath79_device_reset_clear(AR913X_RESET_USB_PHY);
-	mdelay(10);
-
-	ath79_usb_register("ehci-platform", -1,
-			   AR913X_EHCI_BASE, AR913X_EHCI_SIZE,
-			   ATH79_CPU_IRQ(3),
-			   &ath79_ehci_pdata_v2, sizeof(ath79_ehci_pdata_v2));
-}
-
-static void __init ar933x_usb_setup(void)
-{
-	ath79_device_reset_set(AR933X_RESET_USBSUS_OVERRIDE);
-	mdelay(10);
-
-	ath79_device_reset_clear(AR933X_RESET_USB_HOST);
-	mdelay(10);
-
-	ath79_device_reset_clear(AR933X_RESET_USB_PHY);
-	mdelay(10);
-
-	ath79_usb_register("ehci-platform", -1,
-			   AR933X_EHCI_BASE, AR933X_EHCI_SIZE,
-			   ATH79_CPU_IRQ(3),
-			   &ath79_ehci_pdata_v2, sizeof(ath79_ehci_pdata_v2));
-}
-
-static void __init ar934x_usb_setup(void)
-{
-	u32 bootstrap;
-
-	bootstrap = ath79_reset_rr(AR934X_RESET_REG_BOOTSTRAP);
-	if (bootstrap & AR934X_BOOTSTRAP_USB_MODE_DEVICE)
-		return;
-
-	ath79_device_reset_set(AR934X_RESET_USBSUS_OVERRIDE);
-	udelay(1000);
-
-	ath79_device_reset_clear(AR934X_RESET_USB_PHY);
-	udelay(1000);
-
-	ath79_device_reset_clear(AR934X_RESET_USB_PHY_ANALOG);
-	udelay(1000);
-
-	ath79_device_reset_clear(AR934X_RESET_USB_HOST);
-	udelay(1000);
-
-	ath79_usb_register("ehci-platform", -1,
-			   AR934X_EHCI_BASE, AR934X_EHCI_SIZE,
-			   ATH79_CPU_IRQ(3),
-			   &ath79_ehci_pdata_v2, sizeof(ath79_ehci_pdata_v2));
-}
-
-static void __init qca955x_usb_setup(void)
-{
-	ath79_usb_register("ehci-platform", 0,
-			   QCA955X_EHCI0_BASE, QCA955X_EHCI_SIZE,
-			   ATH79_IP3_IRQ(0),
-			   &ath79_ehci_pdata_v2, sizeof(ath79_ehci_pdata_v2));
-
-	ath79_usb_register("ehci-platform", 1,
-			   QCA955X_EHCI1_BASE, QCA955X_EHCI_SIZE,
-			   ATH79_IP3_IRQ(1),
-			   &ath79_ehci_pdata_v2, sizeof(ath79_ehci_pdata_v2));
-}
-
-void __init ath79_register_usb(void)
-{
-	if (soc_is_ar71xx())
-		ath79_usb_setup();
-	else if (soc_is_ar7240())
-		ar7240_usb_setup();
-	else if (soc_is_ar7241() || soc_is_ar7242())
-		ar724x_usb_setup();
-	else if (soc_is_ar913x())
-		ar913x_usb_setup();
-	else if (soc_is_ar933x())
-		ar933x_usb_setup();
-	else if (soc_is_ar934x())
-		ar934x_usb_setup();
-	else if (soc_is_qca955x())
-		qca955x_usb_setup();
-	else
-		BUG();
-}
diff --git a/arch/mips/ath79/dev-usb.h b/arch/mips/ath79/dev-usb.h
deleted file mode 100644
index 4b86a69ca080..000000000000
--- a/arch/mips/ath79/dev-usb.h
+++ /dev/null
@@ -1,17 +0,0 @@
-/*
- *  Atheros AR71XX/AR724X/AR913X USB Host Controller support
- *
- *  Copyright (C) 2008-2010 Gabor Juhos <juhosg@openwrt.org>
- *  Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
- *
- *  This program is free software; you can redistribute it and/or modify it
- *  under the terms of the GNU General Public License version 2 as published
- *  by the Free Software Foundation.
- */
-
-#ifndef _ATH79_DEV_USB_H
-#define _ATH79_DEV_USB_H
-
-void ath79_register_usb(void);
-
-#endif /* _ATH79_DEV_USB_H */
diff --git a/arch/mips/ath79/dev-wmac.c b/arch/mips/ath79/dev-wmac.c
deleted file mode 100644
index da190b1b87ce..000000000000
--- a/arch/mips/ath79/dev-wmac.c
+++ /dev/null
@@ -1,155 +0,0 @@
-/*
- *  Atheros AR913X/AR933X SoC built-in WMAC device support
- *
- *  Copyright (C) 2010-2011 Jaiganesh Narayanan <jnarayanan@atheros.com>
- *  Copyright (C) 2008-2011 Gabor Juhos <juhosg@openwrt.org>
- *  Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
- *
- *  Parts of this file are based on Atheros 2.6.15/2.6.31 BSP
- *
- *  This program is free software; you can redistribute it and/or modify it
- *  under the terms of the GNU General Public License version 2 as published
- *  by the Free Software Foundation.
- */
-
-#include <linux/init.h>
-#include <linux/delay.h>
-#include <linux/irq.h>
-#include <linux/platform_device.h>
-#include <linux/ath9k_platform.h>
-
-#include <asm/mach-ath79/ath79.h>
-#include <asm/mach-ath79/ar71xx_regs.h>
-#include "dev-wmac.h"
-
-static struct ath9k_platform_data ath79_wmac_data;
-
-static struct resource ath79_wmac_resources[] = {
-	{
-		/* .start and .end fields are filled dynamically */
-		.flags	= IORESOURCE_MEM,
-	}, {
-		/* .start and .end fields are filled dynamically */
-		.flags	= IORESOURCE_IRQ,
-	},
-};
-
-static struct platform_device ath79_wmac_device = {
-	.name		= "ath9k",
-	.id		= -1,
-	.resource	= ath79_wmac_resources,
-	.num_resources	= ARRAY_SIZE(ath79_wmac_resources),
-	.dev = {
-		.platform_data = &ath79_wmac_data,
-	},
-};
-
-static void __init ar913x_wmac_setup(void)
-{
-	/* reset the WMAC */
-	ath79_device_reset_set(AR913X_RESET_AMBA2WMAC);
-	mdelay(10);
-
-	ath79_device_reset_clear(AR913X_RESET_AMBA2WMAC);
-	mdelay(10);
-
-	ath79_wmac_resources[0].start = AR913X_WMAC_BASE;
-	ath79_wmac_resources[0].end = AR913X_WMAC_BASE + AR913X_WMAC_SIZE - 1;
-	ath79_wmac_resources[1].start = ATH79_CPU_IRQ(2);
-	ath79_wmac_resources[1].end = ATH79_CPU_IRQ(2);
-}
-
-
-static int ar933x_wmac_reset(void)
-{
-	ath79_device_reset_set(AR933X_RESET_WMAC);
-	ath79_device_reset_clear(AR933X_RESET_WMAC);
-
-	return 0;
-}
-
-static int ar933x_r1_get_wmac_revision(void)
-{
-	return ath79_soc_rev;
-}
-
-static void __init ar933x_wmac_setup(void)
-{
-	u32 t;
-
-	ar933x_wmac_reset();
-
-	ath79_wmac_device.name = "ar933x_wmac";
-
-	ath79_wmac_resources[0].start = AR933X_WMAC_BASE;
-	ath79_wmac_resources[0].end = AR933X_WMAC_BASE + AR933X_WMAC_SIZE - 1;
-	ath79_wmac_resources[1].start = ATH79_CPU_IRQ(2);
-	ath79_wmac_resources[1].end = ATH79_CPU_IRQ(2);
-
-	t = ath79_reset_rr(AR933X_RESET_REG_BOOTSTRAP);
-	if (t & AR933X_BOOTSTRAP_REF_CLK_40)
-		ath79_wmac_data.is_clk_25mhz = false;
-	else
-		ath79_wmac_data.is_clk_25mhz = true;
-
-	if (ath79_soc_rev == 1)
-		ath79_wmac_data.get_mac_revision = ar933x_r1_get_wmac_revision;
-
-	ath79_wmac_data.external_reset = ar933x_wmac_reset;
-}
-
-static void ar934x_wmac_setup(void)
-{
-	u32 t;
-
-	ath79_wmac_device.name = "ar934x_wmac";
-
-	ath79_wmac_resources[0].start = AR934X_WMAC_BASE;
-	ath79_wmac_resources[0].end = AR934X_WMAC_BASE + AR934X_WMAC_SIZE - 1;
-	ath79_wmac_resources[1].start = ATH79_IP2_IRQ(1);
-	ath79_wmac_resources[1].end = ATH79_IP2_IRQ(1);
-
-	t = ath79_reset_rr(AR934X_RESET_REG_BOOTSTRAP);
-	if (t & AR934X_BOOTSTRAP_REF_CLK_40)
-		ath79_wmac_data.is_clk_25mhz = false;
-	else
-		ath79_wmac_data.is_clk_25mhz = true;
-}
-
-static void qca955x_wmac_setup(void)
-{
-	u32 t;
-
-	ath79_wmac_device.name = "qca955x_wmac";
-
-	ath79_wmac_resources[0].start = QCA955X_WMAC_BASE;
-	ath79_wmac_resources[0].end = QCA955X_WMAC_BASE + QCA955X_WMAC_SIZE - 1;
-	ath79_wmac_resources[1].start = ATH79_IP2_IRQ(1);
-	ath79_wmac_resources[1].end = ATH79_IP2_IRQ(1);
-
-	t = ath79_reset_rr(QCA955X_RESET_REG_BOOTSTRAP);
-	if (t & QCA955X_BOOTSTRAP_REF_CLK_40)
-		ath79_wmac_data.is_clk_25mhz = false;
-	else
-		ath79_wmac_data.is_clk_25mhz = true;
-}
-
-void __init ath79_register_wmac(u8 *cal_data)
-{
-	if (soc_is_ar913x())
-		ar913x_wmac_setup();
-	else if (soc_is_ar933x())
-		ar933x_wmac_setup();
-	else if (soc_is_ar934x())
-		ar934x_wmac_setup();
-	else if (soc_is_qca955x())
-		qca955x_wmac_setup();
-	else
-		BUG();
-
-	if (cal_data)
-		memcpy(ath79_wmac_data.eeprom_data, cal_data,
-		       sizeof(ath79_wmac_data.eeprom_data));
-
-	platform_device_register(&ath79_wmac_device);
-}
diff --git a/arch/mips/ath79/dev-wmac.h b/arch/mips/ath79/dev-wmac.h
deleted file mode 100644
index c9cd8709f090..000000000000
--- a/arch/mips/ath79/dev-wmac.h
+++ /dev/null
@@ -1,17 +0,0 @@
-/*
- *  Atheros AR913X/AR933X SoC built-in WMAC device support
- *
- *  Copyright (C) 2008-2011 Gabor Juhos <juhosg@openwrt.org>
- *  Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
- *
- *  This program is free software; you can redistribute it and/or modify it
- *  under the terms of the GNU General Public License version 2 as published
- *  by the Free Software Foundation.
- */
-
-#ifndef _ATH79_DEV_WMAC_H
-#define _ATH79_DEV_WMAC_H
-
-void ath79_register_wmac(u8 *cal_data);
-
-#endif /* _ATH79_DEV_WMAC_H */
diff --git a/arch/mips/ath79/irq.c b/arch/mips/ath79/irq.c
deleted file mode 100644
index 2dfff1f19004..000000000000
--- a/arch/mips/ath79/irq.c
+++ /dev/null
@@ -1,169 +0,0 @@
-/*
- *  Atheros AR71xx/AR724x/AR913x specific interrupt handling
- *
- *  Copyright (C) 2010-2011 Jaiganesh Narayanan <jnarayanan@atheros.com>
- *  Copyright (C) 2008-2011 Gabor Juhos <juhosg@openwrt.org>
- *  Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
- *
- *  Parts of this file are based on Atheros' 2.6.15/2.6.31 BSP
- *
- *  This program is free software; you can redistribute it and/or modify it
- *  under the terms of the GNU General Public License version 2 as published
- *  by the Free Software Foundation.
- */
-
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/irqchip.h>
-#include <linux/of_irq.h>
-
-#include <asm/irq_cpu.h>
-#include <asm/mipsregs.h>
-
-#include <asm/mach-ath79/ath79.h>
-#include <asm/mach-ath79/ar71xx_regs.h>
-#include "common.h"
-#include "machtypes.h"
-
-
-static void ar934x_ip2_irq_dispatch(struct irq_desc *desc)
-{
-	u32 status;
-
-	status = ath79_reset_rr(AR934X_RESET_REG_PCIE_WMAC_INT_STATUS);
-
-	if (status & AR934X_PCIE_WMAC_INT_PCIE_ALL) {
-		ath79_ddr_wb_flush(3);
-		generic_handle_irq(ATH79_IP2_IRQ(0));
-	} else if (status & AR934X_PCIE_WMAC_INT_WMAC_ALL) {
-		ath79_ddr_wb_flush(4);
-		generic_handle_irq(ATH79_IP2_IRQ(1));
-	} else {
-		spurious_interrupt();
-	}
-}
-
-static void ar934x_ip2_irq_init(void)
-{
-	int i;
-
-	for (i = ATH79_IP2_IRQ_BASE;
-	     i < ATH79_IP2_IRQ_BASE + ATH79_IP2_IRQ_COUNT; i++)
-		irq_set_chip_and_handler(i, &dummy_irq_chip,
-					 handle_level_irq);
-
-	irq_set_chained_handler(ATH79_CPU_IRQ(2), ar934x_ip2_irq_dispatch);
-}
-
-static void qca955x_ip2_irq_dispatch(struct irq_desc *desc)
-{
-	u32 status;
-
-	status = ath79_reset_rr(QCA955X_RESET_REG_EXT_INT_STATUS);
-	status &= QCA955X_EXT_INT_PCIE_RC1_ALL | QCA955X_EXT_INT_WMAC_ALL;
-
-	if (status == 0) {
-		spurious_interrupt();
-		return;
-	}
-
-	if (status & QCA955X_EXT_INT_PCIE_RC1_ALL) {
-		/* TODO: flush DDR? */
-		generic_handle_irq(ATH79_IP2_IRQ(0));
-	}
-
-	if (status & QCA955X_EXT_INT_WMAC_ALL) {
-		/* TODO: flush DDR? */
-		generic_handle_irq(ATH79_IP2_IRQ(1));
-	}
-}
-
-static void qca955x_ip3_irq_dispatch(struct irq_desc *desc)
-{
-	u32 status;
-
-	status = ath79_reset_rr(QCA955X_RESET_REG_EXT_INT_STATUS);
-	status &= QCA955X_EXT_INT_PCIE_RC2_ALL |
-		  QCA955X_EXT_INT_USB1 |
-		  QCA955X_EXT_INT_USB2;
-
-	if (status == 0) {
-		spurious_interrupt();
-		return;
-	}
-
-	if (status & QCA955X_EXT_INT_USB1) {
-		/* TODO: flush DDR? */
-		generic_handle_irq(ATH79_IP3_IRQ(0));
-	}
-
-	if (status & QCA955X_EXT_INT_USB2) {
-		/* TODO: flush DDR? */
-		generic_handle_irq(ATH79_IP3_IRQ(1));
-	}
-
-	if (status & QCA955X_EXT_INT_PCIE_RC2_ALL) {
-		/* TODO: flush DDR? */
-		generic_handle_irq(ATH79_IP3_IRQ(2));
-	}
-}
-
-static void qca955x_irq_init(void)
-{
-	int i;
-
-	for (i = ATH79_IP2_IRQ_BASE;
-	     i < ATH79_IP2_IRQ_BASE + ATH79_IP2_IRQ_COUNT; i++)
-		irq_set_chip_and_handler(i, &dummy_irq_chip,
-					 handle_level_irq);
-
-	irq_set_chained_handler(ATH79_CPU_IRQ(2), qca955x_ip2_irq_dispatch);
-
-	for (i = ATH79_IP3_IRQ_BASE;
-	     i < ATH79_IP3_IRQ_BASE + ATH79_IP3_IRQ_COUNT; i++)
-		irq_set_chip_and_handler(i, &dummy_irq_chip,
-					 handle_level_irq);
-
-	irq_set_chained_handler(ATH79_CPU_IRQ(3), qca955x_ip3_irq_dispatch);
-}
-
-void __init arch_init_irq(void)
-{
-	unsigned irq_wb_chan2 = -1;
-	unsigned irq_wb_chan3 = -1;
-	bool misc_is_ar71xx;
-
-	if (mips_machtype == ATH79_MACH_GENERIC_OF) {
-		irqchip_init();
-		return;
-	}
-
-	if (soc_is_ar71xx() || soc_is_ar724x() ||
-	    soc_is_ar913x() || soc_is_ar933x()) {
-		irq_wb_chan2 = 3;
-		irq_wb_chan3 = 2;
-	} else if (soc_is_ar934x()) {
-		irq_wb_chan3 = 2;
-	}
-
-	ath79_cpu_irq_init(irq_wb_chan2, irq_wb_chan3);
-
-	if (soc_is_ar71xx() || soc_is_ar913x())
-		misc_is_ar71xx = true;
-	else if (soc_is_ar724x() ||
-		 soc_is_ar933x() ||
-		 soc_is_ar934x() ||
-		 soc_is_qca955x())
-		misc_is_ar71xx = false;
-	else
-		BUG();
-	ath79_misc_irq_init(
-		ath79_reset_base + AR71XX_RESET_REG_MISC_INT_STATUS,
-		ATH79_CPU_IRQ(6), ATH79_MISC_IRQ_BASE, misc_is_ar71xx);
-
-	if (soc_is_ar934x())
-		ar934x_ip2_irq_init();
-	else if (soc_is_qca955x())
-		qca955x_irq_init();
-}
diff --git a/arch/mips/ath79/mach-ap121.c b/arch/mips/ath79/mach-ap121.c
deleted file mode 100644
index 1bf73f2a069d..000000000000
--- a/arch/mips/ath79/mach-ap121.c
+++ /dev/null
@@ -1,92 +0,0 @@
-/*
- *  Atheros AP121 board support
- *
- *  Copyright (C) 2011 Gabor Juhos <juhosg@openwrt.org>
- *
- *  This program is free software; you can redistribute it and/or modify it
- *  under the terms of the GNU General Public License version 2 as published
- *  by the Free Software Foundation.
- */
-
-#include "machtypes.h"
-#include "dev-gpio-buttons.h"
-#include "dev-leds-gpio.h"
-#include "dev-spi.h"
-#include "dev-usb.h"
-#include "dev-wmac.h"
-
-#define AP121_GPIO_LED_WLAN		0
-#define AP121_GPIO_LED_USB		1
-
-#define AP121_GPIO_BTN_JUMPSTART	11
-#define AP121_GPIO_BTN_RESET		12
-
-#define AP121_KEYS_POLL_INTERVAL	20	/* msecs */
-#define AP121_KEYS_DEBOUNCE_INTERVAL	(3 * AP121_KEYS_POLL_INTERVAL)
-
-#define AP121_CAL_DATA_ADDR	0x1fff1000
-
-static struct gpio_led ap121_leds_gpio[] __initdata = {
-	{
-		.name		= "ap121:green:usb",
-		.gpio		= AP121_GPIO_LED_USB,
-		.active_low	= 0,
-	},
-	{
-		.name		= "ap121:green:wlan",
-		.gpio		= AP121_GPIO_LED_WLAN,
-		.active_low	= 0,
-	},
-};
-
-static struct gpio_keys_button ap121_gpio_keys[] __initdata = {
-	{
-		.desc		= "jumpstart button",
-		.type		= EV_KEY,
-		.code		= KEY_WPS_BUTTON,
-		.debounce_interval = AP121_KEYS_DEBOUNCE_INTERVAL,
-		.gpio		= AP121_GPIO_BTN_JUMPSTART,
-		.active_low	= 1,
-	},
-	{
-		.desc		= "reset button",
-		.type		= EV_KEY,
-		.code		= KEY_RESTART,
-		.debounce_interval = AP121_KEYS_DEBOUNCE_INTERVAL,
-		.gpio		= AP121_GPIO_BTN_RESET,
-		.active_low	= 1,
-	}
-};
-
-static struct spi_board_info ap121_spi_info[] = {
-	{
-		.bus_num	= 0,
-		.chip_select	= 0,
-		.max_speed_hz	= 25000000,
-		.modalias	= "mx25l1606e",
-	}
-};
-
-static struct ath79_spi_platform_data ap121_spi_data = {
-	.bus_num	= 0,
-	.num_chipselect = 1,
-};
-
-static void __init ap121_setup(void)
-{
-	u8 *cal_data = (u8 *) KSEG1ADDR(AP121_CAL_DATA_ADDR);
-
-	ath79_register_leds_gpio(-1, ARRAY_SIZE(ap121_leds_gpio),
-				 ap121_leds_gpio);
-	ath79_register_gpio_keys_polled(-1, AP121_KEYS_POLL_INTERVAL,
-					ARRAY_SIZE(ap121_gpio_keys),
-					ap121_gpio_keys);
-
-	ath79_register_spi(&ap121_spi_data, ap121_spi_info,
-			   ARRAY_SIZE(ap121_spi_info));
-	ath79_register_usb();
-	ath79_register_wmac(cal_data);
-}
-
-MIPS_MACHINE(ATH79_MACH_AP121, "AP121", "Atheros AP121 reference board",
-	     ap121_setup);
diff --git a/arch/mips/ath79/mach-ap136.c b/arch/mips/ath79/mach-ap136.c
deleted file mode 100644
index 07eac58c3641..000000000000
--- a/arch/mips/ath79/mach-ap136.c
+++ /dev/null
@@ -1,156 +0,0 @@
-/*
- * Qualcomm Atheros AP136 reference board support
- *
- * Copyright (c) 2012 Qualcomm Atheros
- * Copyright (c) 2012-2013 Gabor Juhos <juhosg@openwrt.org>
- *
- * Permission to use, copy, modify, and/or distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
- * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- *
- */
-
-#include <linux/pci.h>
-#include <linux/ath9k_platform.h>
-
-#include "machtypes.h"
-#include "dev-gpio-buttons.h"
-#include "dev-leds-gpio.h"
-#include "dev-spi.h"
-#include "dev-usb.h"
-#include "dev-wmac.h"
-#include "pci.h"
-
-#define AP136_GPIO_LED_STATUS_RED	14
-#define AP136_GPIO_LED_STATUS_GREEN	19
-#define AP136_GPIO_LED_USB		4
-#define AP136_GPIO_LED_WLAN_2G		13
-#define AP136_GPIO_LED_WLAN_5G		12
-#define AP136_GPIO_LED_WPS_RED		15
-#define AP136_GPIO_LED_WPS_GREEN	20
-
-#define AP136_GPIO_BTN_WPS		16
-#define AP136_GPIO_BTN_RFKILL		21
-
-#define AP136_KEYS_POLL_INTERVAL	20	/* msecs */
-#define AP136_KEYS_DEBOUNCE_INTERVAL	(3 * AP136_KEYS_POLL_INTERVAL)
-
-#define AP136_WMAC_CALDATA_OFFSET 0x1000
-#define AP136_PCIE_CALDATA_OFFSET 0x5000
-
-static struct gpio_led ap136_leds_gpio[] __initdata = {
-	{
-		.name		= "qca:green:status",
-		.gpio		= AP136_GPIO_LED_STATUS_GREEN,
-		.active_low	= 1,
-	},
-	{
-		.name		= "qca:red:status",
-		.gpio		= AP136_GPIO_LED_STATUS_RED,
-		.active_low	= 1,
-	},
-	{
-		.name		= "qca:green:wps",
-		.gpio		= AP136_GPIO_LED_WPS_GREEN,
-		.active_low	= 1,
-	},
-	{
-		.name		= "qca:red:wps",
-		.gpio		= AP136_GPIO_LED_WPS_RED,
-		.active_low	= 1,
-	},
-	{
-		.name		= "qca:red:wlan-2g",
-		.gpio		= AP136_GPIO_LED_WLAN_2G,
-		.active_low	= 1,
-	},
-	{
-		.name		= "qca:red:usb",
-		.gpio		= AP136_GPIO_LED_USB,
-		.active_low	= 1,
-	}
-};
-
-static struct gpio_keys_button ap136_gpio_keys[] __initdata = {
-	{
-		.desc		= "WPS button",
-		.type		= EV_KEY,
-		.code		= KEY_WPS_BUTTON,
-		.debounce_interval = AP136_KEYS_DEBOUNCE_INTERVAL,
-		.gpio		= AP136_GPIO_BTN_WPS,
-		.active_low	= 1,
-	},
-	{
-		.desc		= "RFKILL button",
-		.type		= EV_KEY,
-		.code		= KEY_RFKILL,
-		.debounce_interval = AP136_KEYS_DEBOUNCE_INTERVAL,
-		.gpio		= AP136_GPIO_BTN_RFKILL,
-		.active_low	= 1,
-	},
-};
-
-static struct spi_board_info ap136_spi_info[] = {
-	{
-		.bus_num	= 0,
-		.chip_select	= 0,
-		.max_speed_hz	= 25000000,
-		.modalias	= "mx25l6405d",
-	}
-};
-
-static struct ath79_spi_platform_data ap136_spi_data = {
-	.bus_num	= 0,
-	.num_chipselect	= 1,
-};
-
-#ifdef CONFIG_PCI
-static struct ath9k_platform_data ap136_ath9k_data;
-
-static int ap136_pci_plat_dev_init(struct pci_dev *dev)
-{
-	if (dev->bus->number == 1 && (PCI_SLOT(dev->devfn)) == 0)
-		dev->dev.platform_data = &ap136_ath9k_data;
-
-	return 0;
-}
-
-static void __init ap136_pci_init(u8 *eeprom)
-{
-	memcpy(ap136_ath9k_data.eeprom_data, eeprom,
-	       sizeof(ap136_ath9k_data.eeprom_data));
-
-	ath79_pci_set_plat_dev_init(ap136_pci_plat_dev_init);
-	ath79_register_pci();
-}
-#else
-static inline void ap136_pci_init(u8 *eeprom) {}
-#endif /* CONFIG_PCI */
-
-static void __init ap136_setup(void)
-{
-	u8 *art = (u8 *) KSEG1ADDR(0x1fff0000);
-
-	ath79_register_leds_gpio(-1, ARRAY_SIZE(ap136_leds_gpio),
-				 ap136_leds_gpio);
-	ath79_register_gpio_keys_polled(-1, AP136_KEYS_POLL_INTERVAL,
-					ARRAY_SIZE(ap136_gpio_keys),
-					ap136_gpio_keys);
-	ath79_register_spi(&ap136_spi_data, ap136_spi_info,
-			   ARRAY_SIZE(ap136_spi_info));
-	ath79_register_usb();
-	ath79_register_wmac(art + AP136_WMAC_CALDATA_OFFSET);
-	ap136_pci_init(art + AP136_PCIE_CALDATA_OFFSET);
-}
-
-MIPS_MACHINE(ATH79_MACH_AP136_010, "AP136-010",
-	     "Atheros AP136-010 reference board",
-	     ap136_setup);
diff --git a/arch/mips/ath79/mach-ap81.c b/arch/mips/ath79/mach-ap81.c
deleted file mode 100644
index 1c78d497f930..000000000000
--- a/arch/mips/ath79/mach-ap81.c
+++ /dev/null
@@ -1,100 +0,0 @@
-/*
- *  Atheros AP81 board support
- *
- *  Copyright (C) 2009-2010 Gabor Juhos <juhosg@openwrt.org>
- *  Copyright (C) 2009 Imre Kaloz <kaloz@openwrt.org>
- *
- *  This program is free software; you can redistribute it and/or modify it
- *  under the terms of the GNU General Public License version 2 as published
- *  by the Free Software Foundation.
- */
-
-#include "machtypes.h"
-#include "dev-wmac.h"
-#include "dev-gpio-buttons.h"
-#include "dev-leds-gpio.h"
-#include "dev-spi.h"
-#include "dev-usb.h"
-
-#define AP81_GPIO_LED_STATUS	1
-#define AP81_GPIO_LED_AOSS	3
-#define AP81_GPIO_LED_WLAN	6
-#define AP81_GPIO_LED_POWER	14
-
-#define AP81_GPIO_BTN_SW4	12
-#define AP81_GPIO_BTN_SW1	21
-
-#define AP81_KEYS_POLL_INTERVAL		20	/* msecs */
-#define AP81_KEYS_DEBOUNCE_INTERVAL	(3 * AP81_KEYS_POLL_INTERVAL)
-
-#define AP81_CAL_DATA_ADDR	0x1fff1000
-
-static struct gpio_led ap81_leds_gpio[] __initdata = {
-	{
-		.name		= "ap81:green:status",
-		.gpio		= AP81_GPIO_LED_STATUS,
-		.active_low	= 1,
-	}, {
-		.name		= "ap81:amber:aoss",
-		.gpio		= AP81_GPIO_LED_AOSS,
-		.active_low	= 1,
-	}, {
-		.name		= "ap81:green:wlan",
-		.gpio		= AP81_GPIO_LED_WLAN,
-		.active_low	= 1,
-	}, {
-		.name		= "ap81:green:power",
-		.gpio		= AP81_GPIO_LED_POWER,
-		.active_low	= 1,
-	}
-};
-
-static struct gpio_keys_button ap81_gpio_keys[] __initdata = {
-	{
-		.desc		= "sw1",
-		.type		= EV_KEY,
-		.code		= BTN_0,
-		.debounce_interval = AP81_KEYS_DEBOUNCE_INTERVAL,
-		.gpio		= AP81_GPIO_BTN_SW1,
-		.active_low	= 1,
-	} , {
-		.desc		= "sw4",
-		.type		= EV_KEY,
-		.code		= BTN_1,
-		.debounce_interval = AP81_KEYS_DEBOUNCE_INTERVAL,
-		.gpio		= AP81_GPIO_BTN_SW4,
-		.active_low	= 1,
-	}
-};
-
-static struct spi_board_info ap81_spi_info[] = {
-	{
-		.bus_num	= 0,
-		.chip_select	= 0,
-		.max_speed_hz	= 25000000,
-		.modalias	= "m25p64",
-	}
-};
-
-static struct ath79_spi_platform_data ap81_spi_data = {
-	.bus_num	= 0,
-	.num_chipselect = 1,
-};
-
-static void __init ap81_setup(void)
-{
-	u8 *cal_data = (u8 *) KSEG1ADDR(AP81_CAL_DATA_ADDR);
-
-	ath79_register_leds_gpio(-1, ARRAY_SIZE(ap81_leds_gpio),
-				 ap81_leds_gpio);
-	ath79_register_gpio_keys_polled(-1, AP81_KEYS_POLL_INTERVAL,
-					ARRAY_SIZE(ap81_gpio_keys),
-					ap81_gpio_keys);
-	ath79_register_spi(&ap81_spi_data, ap81_spi_info,
-			   ARRAY_SIZE(ap81_spi_info));
-	ath79_register_wmac(cal_data);
-	ath79_register_usb();
-}
-
-MIPS_MACHINE(ATH79_MACH_AP81, "AP81", "Atheros AP81 reference board",
-	     ap81_setup);
diff --git a/arch/mips/ath79/mach-db120.c b/arch/mips/ath79/mach-db120.c
deleted file mode 100644
index 9423f5aed287..000000000000
--- a/arch/mips/ath79/mach-db120.c
+++ /dev/null
@@ -1,136 +0,0 @@
-/*
- * Atheros DB120 reference board support
- *
- * Copyright (c) 2011 Qualcomm Atheros
- * Copyright (c) 2011 Gabor Juhos <juhosg@openwrt.org>
- *
- * Permission to use, copy, modify, and/or distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
- * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- *
- */
-
-#include <linux/pci.h>
-#include <linux/ath9k_platform.h>
-
-#include "machtypes.h"
-#include "dev-gpio-buttons.h"
-#include "dev-leds-gpio.h"
-#include "dev-spi.h"
-#include "dev-usb.h"
-#include "dev-wmac.h"
-#include "pci.h"
-
-#define DB120_GPIO_LED_WLAN_5G		12
-#define DB120_GPIO_LED_WLAN_2G		13
-#define DB120_GPIO_LED_STATUS		14
-#define DB120_GPIO_LED_WPS		15
-
-#define DB120_GPIO_BTN_WPS		16
-
-#define DB120_KEYS_POLL_INTERVAL	20	/* msecs */
-#define DB120_KEYS_DEBOUNCE_INTERVAL	(3 * DB120_KEYS_POLL_INTERVAL)
-
-#define DB120_WMAC_CALDATA_OFFSET 0x1000
-#define DB120_PCIE_CALDATA_OFFSET 0x5000
-
-static struct gpio_led db120_leds_gpio[] __initdata = {
-	{
-		.name		= "db120:green:status",
-		.gpio		= DB120_GPIO_LED_STATUS,
-		.active_low	= 1,
-	},
-	{
-		.name		= "db120:green:wps",
-		.gpio		= DB120_GPIO_LED_WPS,
-		.active_low	= 1,
-	},
-	{
-		.name		= "db120:green:wlan-5g",
-		.gpio		= DB120_GPIO_LED_WLAN_5G,
-		.active_low	= 1,
-	},
-	{
-		.name		= "db120:green:wlan-2g",
-		.gpio		= DB120_GPIO_LED_WLAN_2G,
-		.active_low	= 1,
-	},
-};
-
-static struct gpio_keys_button db120_gpio_keys[] __initdata = {
-	{
-		.desc		= "WPS button",
-		.type		= EV_KEY,
-		.code		= KEY_WPS_BUTTON,
-		.debounce_interval = DB120_KEYS_DEBOUNCE_INTERVAL,
-		.gpio		= DB120_GPIO_BTN_WPS,
-		.active_low	= 1,
-	},
-};
-
-static struct spi_board_info db120_spi_info[] = {
-	{
-		.bus_num	= 0,
-		.chip_select	= 0,
-		.max_speed_hz	= 25000000,
-		.modalias	= "s25sl064a",
-	}
-};
-
-static struct ath79_spi_platform_data db120_spi_data = {
-	.bus_num	= 0,
-	.num_chipselect = 1,
-};
-
-#ifdef CONFIG_PCI
-static struct ath9k_platform_data db120_ath9k_data;
-
-static int db120_pci_plat_dev_init(struct pci_dev *dev)
-{
-	switch (PCI_SLOT(dev->devfn)) {
-	case 0:
-		dev->dev.platform_data = &db120_ath9k_data;
-		break;
-	}
-
-	return 0;
-}
-
-static void __init db120_pci_init(u8 *eeprom)
-{
-	memcpy(db120_ath9k_data.eeprom_data, eeprom,
-	       sizeof(db120_ath9k_data.eeprom_data));
-
-	ath79_pci_set_plat_dev_init(db120_pci_plat_dev_init);
-	ath79_register_pci();
-}
-#else
-static inline void db120_pci_init(u8 *eeprom) {}
-#endif /* CONFIG_PCI */
-
-static void __init db120_setup(void)
-{
-	u8 *art = (u8 *) KSEG1ADDR(0x1fff0000);
-
-	ath79_register_leds_gpio(-1, ARRAY_SIZE(db120_leds_gpio),
-				 db120_leds_gpio);
-	ath79_register_gpio_keys_polled(-1, DB120_KEYS_POLL_INTERVAL,
-					ARRAY_SIZE(db120_gpio_keys),
-					db120_gpio_keys);
-	ath79_register_spi(&db120_spi_data, db120_spi_info,
-			   ARRAY_SIZE(db120_spi_info));
-	ath79_register_usb();
-	ath79_register_wmac(art + DB120_WMAC_CALDATA_OFFSET);
-	db120_pci_init(art + DB120_PCIE_CALDATA_OFFSET);
-}
-
-MIPS_MACHINE(ATH79_MACH_DB120, "DB120", "Atheros DB120 reference board",
-	     db120_setup);
diff --git a/arch/mips/ath79/mach-pb44.c b/arch/mips/ath79/mach-pb44.c
deleted file mode 100644
index 75fb96ca61db..000000000000
--- a/arch/mips/ath79/mach-pb44.c
+++ /dev/null
@@ -1,128 +0,0 @@
-/*
- *  Atheros PB44 reference board support
- *
- *  Copyright (C) 2009-2010 Gabor Juhos <juhosg@openwrt.org>
- *
- *  This program is free software; you can redistribute it and/or modify it
- *  under the terms of the GNU General Public License version 2 as published
- *  by the Free Software Foundation.
- */
-
-#include <linux/init.h>
-#include <linux/platform_device.h>
-#include <linux/i2c.h>
-#include <linux/gpio/machine.h>
-#include <linux/platform_data/pcf857x.h>
-
-#include "machtypes.h"
-#include "dev-gpio-buttons.h"
-#include "dev-leds-gpio.h"
-#include "dev-spi.h"
-#include "dev-usb.h"
-#include "pci.h"
-
-#define PB44_GPIO_I2C_SCL	0
-#define PB44_GPIO_I2C_SDA	1
-
-#define PB44_GPIO_EXP_BASE	16
-#define PB44_GPIO_SW_RESET	(PB44_GPIO_EXP_BASE + 6)
-#define PB44_GPIO_SW_JUMP	(PB44_GPIO_EXP_BASE + 8)
-#define PB44_GPIO_LED_JUMP1	(PB44_GPIO_EXP_BASE + 9)
-#define PB44_GPIO_LED_JUMP2	(PB44_GPIO_EXP_BASE + 10)
-
-#define PB44_KEYS_POLL_INTERVAL		20	/* msecs */
-#define PB44_KEYS_DEBOUNCE_INTERVAL	(3 * PB44_KEYS_POLL_INTERVAL)
-
-static struct gpiod_lookup_table pb44_i2c_gpiod_table = {
-	.dev_id = "i2c-gpio.0",
-	.table = {
-		GPIO_LOOKUP_IDX("ath79-gpio", PB44_GPIO_I2C_SDA,
-				NULL, 0, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
-		GPIO_LOOKUP_IDX("ath79-gpio", PB44_GPIO_I2C_SCL,
-				NULL, 1, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
-	},
-};
-
-static struct platform_device pb44_i2c_gpio_device = {
-	.name		= "i2c-gpio",
-	.id		= 0,
-	.dev = {
-		.platform_data	= NULL,
-	}
-};
-
-static struct pcf857x_platform_data pb44_pcf857x_data = {
-	.gpio_base	= PB44_GPIO_EXP_BASE,
-};
-
-static struct i2c_board_info pb44_i2c_board_info[] __initdata = {
-	{
-		I2C_BOARD_INFO("pcf8575", 0x20),
-		.platform_data	= &pb44_pcf857x_data,
-	},
-};
-
-static struct gpio_led pb44_leds_gpio[] __initdata = {
-	{
-		.name		= "pb44:amber:jump1",
-		.gpio		= PB44_GPIO_LED_JUMP1,
-		.active_low	= 1,
-	}, {
-		.name		= "pb44:green:jump2",
-		.gpio		= PB44_GPIO_LED_JUMP2,
-		.active_low	= 1,
-	},
-};
-
-static struct gpio_keys_button pb44_gpio_keys[] __initdata = {
-	{
-		.desc		= "soft_reset",
-		.type		= EV_KEY,
-		.code		= KEY_RESTART,
-		.debounce_interval = PB44_KEYS_DEBOUNCE_INTERVAL,
-		.gpio		= PB44_GPIO_SW_RESET,
-		.active_low	= 1,
-	} , {
-		.desc		= "jumpstart",
-		.type		= EV_KEY,
-		.code		= KEY_WPS_BUTTON,
-		.debounce_interval = PB44_KEYS_DEBOUNCE_INTERVAL,
-		.gpio		= PB44_GPIO_SW_JUMP,
-		.active_low	= 1,
-	}
-};
-
-static struct spi_board_info pb44_spi_info[] = {
-	{
-		.bus_num	= 0,
-		.chip_select	= 0,
-		.max_speed_hz	= 25000000,
-		.modalias	= "m25p64",
-	},
-};
-
-static struct ath79_spi_platform_data pb44_spi_data = {
-	.bus_num		= 0,
-	.num_chipselect		= 1,
-};
-
-static void __init pb44_init(void)
-{
-	gpiod_add_lookup_table(&pb44_i2c_gpiod_table);
-	i2c_register_board_info(0, pb44_i2c_board_info,
-				ARRAY_SIZE(pb44_i2c_board_info));
-	platform_device_register(&pb44_i2c_gpio_device);
-
-	ath79_register_leds_gpio(-1, ARRAY_SIZE(pb44_leds_gpio),
-				 pb44_leds_gpio);
-	ath79_register_gpio_keys_polled(-1, PB44_KEYS_POLL_INTERVAL,
-					ARRAY_SIZE(pb44_gpio_keys),
-					pb44_gpio_keys);
-	ath79_register_spi(&pb44_spi_data, pb44_spi_info,
-			   ARRAY_SIZE(pb44_spi_info));
-	ath79_register_usb();
-	ath79_register_pci();
-}
-
-MIPS_MACHINE(ATH79_MACH_PB44, "PB44", "Atheros PB44 reference board",
-	     pb44_init);
diff --git a/arch/mips/ath79/mach-ubnt-xm.c b/arch/mips/ath79/mach-ubnt-xm.c
deleted file mode 100644
index 4a3c60694c75..000000000000
--- a/arch/mips/ath79/mach-ubnt-xm.c
+++ /dev/null
@@ -1,126 +0,0 @@
-/*
- *  Ubiquiti Networks XM (rev 1.0) board support
- *
- *  Copyright (C) 2011 René Bolldorf <xsecute@googlemail.com>
- *
- *  Derived from: mach-pb44.c
- *
- *  This program is free software; you can redistribute it and/or modify it
- *  under the terms of the GNU General Public License version 2 as published
- *  by the Free Software Foundation.
- */
-
-#include <linux/init.h>
-#include <linux/pci.h>
-#include <linux/ath9k_platform.h>
-
-#include <asm/mach-ath79/irq.h>
-
-#include "machtypes.h"
-#include "dev-gpio-buttons.h"
-#include "dev-leds-gpio.h"
-#include "dev-spi.h"
-#include "pci.h"
-
-#define UBNT_XM_GPIO_LED_L1		0
-#define UBNT_XM_GPIO_LED_L2		1
-#define UBNT_XM_GPIO_LED_L3		11
-#define UBNT_XM_GPIO_LED_L4		7
-
-#define UBNT_XM_GPIO_BTN_RESET		12
-
-#define UBNT_XM_KEYS_POLL_INTERVAL	20
-#define UBNT_XM_KEYS_DEBOUNCE_INTERVAL	(3 * UBNT_XM_KEYS_POLL_INTERVAL)
-
-#define UBNT_XM_EEPROM_ADDR		(u8 *) KSEG1ADDR(0x1fff1000)
-
-static struct gpio_led ubnt_xm_leds_gpio[] __initdata = {
-	{
-		.name		= "ubnt-xm:red:link1",
-		.gpio		= UBNT_XM_GPIO_LED_L1,
-		.active_low	= 0,
-	}, {
-		.name		= "ubnt-xm:orange:link2",
-		.gpio		= UBNT_XM_GPIO_LED_L2,
-		.active_low	= 0,
-	}, {
-		.name		= "ubnt-xm:green:link3",
-		.gpio		= UBNT_XM_GPIO_LED_L3,
-		.active_low	= 0,
-	}, {
-		.name		= "ubnt-xm:green:link4",
-		.gpio		= UBNT_XM_GPIO_LED_L4,
-		.active_low	= 0,
-	},
-};
-
-static struct gpio_keys_button ubnt_xm_gpio_keys[] __initdata = {
-	{
-		.desc			= "reset",
-		.type			= EV_KEY,
-		.code			= KEY_RESTART,
-		.debounce_interval	= UBNT_XM_KEYS_DEBOUNCE_INTERVAL,
-		.gpio			= UBNT_XM_GPIO_BTN_RESET,
-		.active_low		= 1,
-	}
-};
-
-static struct spi_board_info ubnt_xm_spi_info[] = {
-	{
-		.bus_num	= 0,
-		.chip_select	= 0,
-		.max_speed_hz	= 25000000,
-		.modalias	= "mx25l6405d",
-	}
-};
-
-static struct ath79_spi_platform_data ubnt_xm_spi_data = {
-	.bus_num		= 0,
-	.num_chipselect		= 1,
-};
-
-#ifdef CONFIG_PCI
-static struct ath9k_platform_data ubnt_xm_eeprom_data;
-
-static int ubnt_xm_pci_plat_dev_init(struct pci_dev *dev)
-{
-	switch (PCI_SLOT(dev->devfn)) {
-	case 0:
-		dev->dev.platform_data = &ubnt_xm_eeprom_data;
-		break;
-	}
-
-	return 0;
-}
-
-static void __init ubnt_xm_pci_init(void)
-{
-	memcpy(ubnt_xm_eeprom_data.eeprom_data, UBNT_XM_EEPROM_ADDR,
-	       sizeof(ubnt_xm_eeprom_data.eeprom_data));
-
-	ath79_pci_set_plat_dev_init(ubnt_xm_pci_plat_dev_init);
-	ath79_register_pci();
-}
-#else
-static inline void ubnt_xm_pci_init(void) {}
-#endif /* CONFIG_PCI */
-
-static void __init ubnt_xm_init(void)
-{
-	ath79_register_leds_gpio(-1, ARRAY_SIZE(ubnt_xm_leds_gpio),
-				 ubnt_xm_leds_gpio);
-
-	ath79_register_gpio_keys_polled(-1, UBNT_XM_KEYS_POLL_INTERVAL,
-					ARRAY_SIZE(ubnt_xm_gpio_keys),
-					ubnt_xm_gpio_keys);
-
-	ath79_register_spi(&ubnt_xm_spi_data, ubnt_xm_spi_info,
-			   ARRAY_SIZE(ubnt_xm_spi_info));
-
-	ubnt_xm_pci_init();
-}
-
-MIPS_MACHINE(ATH79_MACH_UBNT_XM,
-	     "UBNT-XM",
-	     "Ubiquiti Networks XM (rev 1.0) board",
-	     ubnt_xm_init);
diff --git a/arch/mips/ath79/machtypes.h b/arch/mips/ath79/machtypes.h
deleted file mode 100644
index a13db3d15c8f..000000000000
--- a/arch/mips/ath79/machtypes.h
+++ /dev/null
@@ -1,28 +0,0 @@
-/*
- *  Atheros AR71XX/AR724X/AR913X machine type definitions
- *
- *  Copyright (C) 2008-2010 Gabor Juhos <juhosg@openwrt.org>
- *  Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
- *
- *  This program is free software; you can redistribute it and/or modify it
- *  under the terms of the GNU General Public License version 2 as published
- *  by the Free Software Foundation.
- */
-
-#ifndef _ATH79_MACHTYPE_H
-#define _ATH79_MACHTYPE_H
-
-#include <asm/mips_machine.h>
-
-enum ath79_mach_type {
-	ATH79_MACH_GENERIC_OF = -1,	/* Device tree board */
-	ATH79_MACH_GENERIC = 0,
-	ATH79_MACH_AP121,		/* Atheros AP121 reference board */
-	ATH79_MACH_AP136_010,		/* Atheros AP136-010 reference board */
-	ATH79_MACH_AP81,		/* Atheros AP81 reference board */
-	ATH79_MACH_DB120,		/* Atheros DB120 reference board */
-	ATH79_MACH_PB44,		/* Atheros PB44 reference board */
-	ATH79_MACH_UBNT_XM,		/* Ubiquiti Networks XM board rev 1.0 */
-};
-
-#endif /* _ATH79_MACHTYPE_H */
diff --git a/arch/mips/ath79/pci.c b/arch/mips/ath79/pci.c
deleted file mode 100644
index b816cb4a25ff..000000000000
--- a/arch/mips/ath79/pci.c
+++ /dev/null
@@ -1,273 +0,0 @@
-/*
- *  Atheros AR71XX/AR724X specific PCI setup code
- *
- *  Copyright (C) 2011 René Bolldorf <xsecute@googlemail.com>
- *  Copyright (C) 2008-2011 Gabor Juhos <juhosg@openwrt.org>
- *  Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
- *
- *  Parts of this file are based on Atheros' 2.6.15 BSP
- *
- *  This program is free software; you can redistribute it and/or modify it
- *  under the terms of the GNU General Public License version 2 as published
- *  by the Free Software Foundation.
- */
-
-#include <linux/init.h>
-#include <linux/pci.h>
-#include <linux/resource.h>
-#include <linux/platform_device.h>
-#include <asm/mach-ath79/ar71xx_regs.h>
-#include <asm/mach-ath79/ath79.h>
-#include <asm/mach-ath79/irq.h>
-#include "pci.h"
-
-static int (*ath79_pci_plat_dev_init)(struct pci_dev *dev);
-static const struct ath79_pci_irq *ath79_pci_irq_map;
-static unsigned ath79_pci_nr_irqs;
-
-static const struct ath79_pci_irq ar71xx_pci_irq_map[] = {
-	{
-		.slot	= 17,
-		.pin	= 1,
-		.irq	= ATH79_PCI_IRQ(0),
-	}, {
-		.slot	= 18,
-		.pin	= 1,
-		.irq	= ATH79_PCI_IRQ(1),
-	}, {
-		.slot	= 19,
-		.pin	= 1,
-		.irq	= ATH79_PCI_IRQ(2),
-	}
-};
-
-static const struct ath79_pci_irq ar724x_pci_irq_map[] = {
-	{
-		.slot	= 0,
-		.pin	= 1,
-		.irq	= ATH79_PCI_IRQ(0),
-	}
-};
-
-static const struct ath79_pci_irq qca955x_pci_irq_map[] = {
-	{
-		.bus	= 0,
-		.slot	= 0,
-		.pin	= 1,
-		.irq	= ATH79_PCI_IRQ(0),
-	},
-	{
-		.bus	= 1,
-		.slot	= 0,
-		.pin	= 1,
-		.irq	= ATH79_PCI_IRQ(1),
-	},
-};
-
-int pcibios_map_irq(const struct pci_dev *dev, uint8_t slot, uint8_t pin)
-{
-	int irq = -1;
-	int i;
-
-	if (ath79_pci_nr_irqs == 0 ||
-	    ath79_pci_irq_map == NULL) {
-		if (soc_is_ar71xx()) {
-			ath79_pci_irq_map = ar71xx_pci_irq_map;
-			ath79_pci_nr_irqs = ARRAY_SIZE(ar71xx_pci_irq_map);
-		} else if (soc_is_ar724x() ||
-			   soc_is_ar9342() ||
-			   soc_is_ar9344()) {
-			ath79_pci_irq_map = ar724x_pci_irq_map;
-			ath79_pci_nr_irqs = ARRAY_SIZE(ar724x_pci_irq_map);
-		} else if (soc_is_qca955x()) {
-			ath79_pci_irq_map = qca955x_pci_irq_map;
-			ath79_pci_nr_irqs = ARRAY_SIZE(qca955x_pci_irq_map);
-		} else {
-			pr_crit("pci %s: invalid irq map\n",
-				pci_name((struct pci_dev *) dev));
-			return irq;
-		}
-	}
-
-	for (i = 0; i < ath79_pci_nr_irqs; i++) {
-		const struct ath79_pci_irq *entry;
-
-		entry = &ath79_pci_irq_map[i];
-		if (entry->bus == dev->bus->number &&
-		    entry->slot == slot &&
-		    entry->pin == pin) {
-			irq = entry->irq;
-			break;
-		}
-	}
-
-	if (irq < 0)
-		pr_crit("pci %s: no irq found for pin %u\n",
-			pci_name((struct pci_dev *) dev), pin);
-	else
-		pr_info("pci %s: using irq %d for pin %u\n",
-			pci_name((struct pci_dev *) dev), irq, pin);
-
-	return irq;
-}
-
-int pcibios_plat_dev_init(struct pci_dev *dev)
-{
-	if (ath79_pci_plat_dev_init)
-		return ath79_pci_plat_dev_init(dev);
-
-	return 0;
-}
-
-void __init ath79_pci_set_irq_map(unsigned nr_irqs,
-				  const struct ath79_pci_irq *map)
-{
-	ath79_pci_nr_irqs = nr_irqs;
-	ath79_pci_irq_map = map;
-}
-
-void __init ath79_pci_set_plat_dev_init(int (*func)(struct pci_dev *dev))
-{
-	ath79_pci_plat_dev_init = func;
-}
-
-static struct platform_device *
-ath79_register_pci_ar71xx(void)
-{
-	struct platform_device *pdev;
-	struct resource res[4];
-
-	memset(res, 0, sizeof(res));
-
-	res[0].name = "cfg_base";
-	res[0].flags = IORESOURCE_MEM;
-	res[0].start = AR71XX_PCI_CFG_BASE;
-	res[0].end = AR71XX_PCI_CFG_BASE + AR71XX_PCI_CFG_SIZE - 1;
-
-	res[1].flags = IORESOURCE_IRQ;
-	res[1].start = ATH79_CPU_IRQ(2);
-	res[1].end = ATH79_CPU_IRQ(2);
-
-	res[2].name = "io_base";
-	res[2].flags = IORESOURCE_IO;
-	res[2].start = 0;
-	res[2].end = 0;
-
-	res[3].name = "mem_base";
-	res[3].flags = IORESOURCE_MEM;
-	res[3].start = AR71XX_PCI_MEM_BASE;
-	res[3].end = AR71XX_PCI_MEM_BASE + AR71XX_PCI_MEM_SIZE - 1;
-
-	pdev = platform_device_register_simple("ar71xx-pci", -1,
-					       res, ARRAY_SIZE(res));
-	return pdev;
-}
-
-static struct platform_device *
-ath79_register_pci_ar724x(int id,
-			  unsigned long cfg_base,
-			  unsigned long ctrl_base,
-			  unsigned long crp_base,
-			  unsigned long mem_base,
-			  unsigned long mem_size,
-			  unsigned long io_base,
-			  int irq)
-{
-	struct platform_device *pdev;
-	struct resource res[6];
-
-	memset(res, 0, sizeof(res));
-
-	res[0].name = "cfg_base";
-	res[0].flags = IORESOURCE_MEM;
-	res[0].start = cfg_base;
-	res[0].end = cfg_base + AR724X_PCI_CFG_SIZE - 1;
-
-	res[1].name = "ctrl_base";
-	res[1].flags = IORESOURCE_MEM;
-	res[1].start = ctrl_base;
-	res[1].end = ctrl_base + AR724X_PCI_CTRL_SIZE - 1;
-
-	res[2].flags = IORESOURCE_IRQ;
-	res[2].start = irq;
-	res[2].end = irq;
-
-	res[3].name = "mem_base";
-	res[3].flags = IORESOURCE_MEM;
-	res[3].start = mem_base;
-	res[3].end = mem_base + mem_size - 1;
-
-	res[4].name = "io_base";
-	res[4].flags = IORESOURCE_IO;
-	res[4].start = io_base;
-	res[4].end = io_base;
-
-	res[5].name = "crp_base";
-	res[5].flags = IORESOURCE_MEM;
-	res[5].start = crp_base;
-	res[5].end = crp_base + AR724X_PCI_CRP_SIZE - 1;
-
-	pdev = platform_device_register_simple("ar724x-pci", id,
-					       res, ARRAY_SIZE(res));
-	return pdev;
-}
-
-int __init ath79_register_pci(void)
-{
-	struct platform_device *pdev = NULL;
-
-	if (soc_is_ar71xx()) {
-		pdev = ath79_register_pci_ar71xx();
-	} else if (soc_is_ar724x()) {
-		pdev = ath79_register_pci_ar724x(-1,
-						 AR724X_PCI_CFG_BASE,
-						 AR724X_PCI_CTRL_BASE,
-						 AR724X_PCI_CRP_BASE,
-						 AR724X_PCI_MEM_BASE,
-						 AR724X_PCI_MEM_SIZE,
-						 0,
-						 ATH79_CPU_IRQ(2));
-	} else if (soc_is_ar9342() ||
-		   soc_is_ar9344()) {
-		u32 bootstrap;
-
-		bootstrap = ath79_reset_rr(AR934X_RESET_REG_BOOTSTRAP);
-		if ((bootstrap & AR934X_BOOTSTRAP_PCIE_RC) == 0)
-			return -ENODEV;
-
-		pdev = ath79_register_pci_ar724x(-1,
-						 AR724X_PCI_CFG_BASE,
-						 AR724X_PCI_CTRL_BASE,
-						 AR724X_PCI_CRP_BASE,
-						 AR724X_PCI_MEM_BASE,
-						 AR724X_PCI_MEM_SIZE,
-						 0,
-						 ATH79_IP2_IRQ(0));
-	} else if (soc_is_qca9558()) {
-		pdev = ath79_register_pci_ar724x(0,
-						 QCA955X_PCI_CFG_BASE0,
-						 QCA955X_PCI_CTRL_BASE0,
-						 QCA955X_PCI_CRP_BASE0,
-						 QCA955X_PCI_MEM_BASE0,
-						 QCA955X_PCI_MEM_SIZE,
-						 0,
-						 ATH79_IP2_IRQ(0));
-
-		pdev = ath79_register_pci_ar724x(1,
-						 QCA955X_PCI_CFG_BASE1,
-						 QCA955X_PCI_CTRL_BASE1,
-						 QCA955X_PCI_CRP_BASE1,
-						 QCA955X_PCI_MEM_BASE1,
-						 QCA955X_PCI_MEM_SIZE,
-						 1,
-						 ATH79_IP3_IRQ(2));
-	} else {
-		/* No PCI support */
-		return -ENODEV;
-	}
-
-	if (!pdev)
-		pr_err("unable to register PCI controller device\n");
-
-	return pdev ? 0 : -ENODEV;
-}
diff --git a/arch/mips/ath79/pci.h b/arch/mips/ath79/pci.h
deleted file mode 100644
index 1d00a3803c37..000000000000
--- a/arch/mips/ath79/pci.h
+++ /dev/null
@@ -1,35 +0,0 @@
-/*
- *  Atheros AR71XX/AR724X PCI support
- *
- *  Copyright (C) 2011 René Bolldorf <xsecute@googlemail.com>
- *  Copyright (C) 2008-2011 Gabor Juhos <juhosg@openwrt.org>
- *  Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
- *
- *  This program is free software; you can redistribute it and/or modify it
- *  under the terms of the GNU General Public License version 2 as published
- *  by the Free Software Foundation.
- */
-
-#ifndef _ATH79_PCI_H
-#define _ATH79_PCI_H
-
-struct ath79_pci_irq {
-	int	bus;
-	u8	slot;
-	u8	pin;
-	int	irq;
-};
-
-#ifdef CONFIG_PCI
-void ath79_pci_set_irq_map(unsigned nr_irqs, const struct ath79_pci_irq *map);
-void ath79_pci_set_plat_dev_init(int (*func)(struct pci_dev *dev));
-int ath79_register_pci(void);
-#else
-static inline void
-ath79_pci_set_irq_map(unsigned nr_irqs, const struct ath79_pci_irq *map) {}
-static inline void
-ath79_pci_set_plat_dev_init(int (*func)(struct pci_dev *)) {}
-static inline int ath79_register_pci(void) { return 0; }
-#endif
-
-#endif /* _ATH79_PCI_H */
diff --git a/arch/mips/ath79/setup.c b/arch/mips/ath79/setup.c
index 9728abcb18fa..4a70c5de8c92 100644
--- a/arch/mips/ath79/setup.c
+++ b/arch/mips/ath79/setup.c
@@ -19,6 +19,7 @@
 #include <linux/clk.h>
 #include <linux/clk-provider.h>
 #include <linux/of_fdt.h>
+#include <linux/irqchip.h>
 
 #include <asm/bootinfo.h>
 #include <asm/idle.h>
@@ -31,8 +32,6 @@
 #include <asm/mach-ath79/ath79.h>
 #include <asm/mach-ath79/ar71xx_regs.h>
 #include "common.h"
-#include "dev-common.h"
-#include "machtypes.h"
 
 #define ATH79_SYS_TYPE_LEN	64
 
@@ -235,25 +234,21 @@ void __init plat_mem_setup(void)
 	else if (fw_passed_dtb)
 		__dt_setup_arch((void *)KSEG0ADDR(fw_passed_dtb));
 
-	if (mips_machtype != ATH79_MACH_GENERIC_OF) {
-		ath79_reset_base = ioremap_nocache(AR71XX_RESET_BASE,
-						   AR71XX_RESET_SIZE);
-		ath79_pll_base = ioremap_nocache(AR71XX_PLL_BASE,
-						 AR71XX_PLL_SIZE);
-		ath79_detect_sys_type();
-		ath79_ddr_ctrl_init();
+	ath79_reset_base = ioremap_nocache(AR71XX_RESET_BASE,
+					   AR71XX_RESET_SIZE);
+	ath79_pll_base = ioremap_nocache(AR71XX_PLL_BASE,
+					 AR71XX_PLL_SIZE);
+	ath79_detect_sys_type();
+	ath79_ddr_ctrl_init();
 
-		detect_memory_region(0, ATH79_MEM_SIZE_MIN, ATH79_MEM_SIZE_MAX);
-
-		/* OF machines should use the reset driver */
-		_machine_restart = ath79_restart;
-	}
+	detect_memory_region(0, ATH79_MEM_SIZE_MIN, ATH79_MEM_SIZE_MAX);
 
+	_machine_restart = ath79_restart;
 	_machine_halt = ath79_halt;
 	pm_power_off = ath79_halt;
 }
 
-static void __init ath79_of_plat_time_init(void)
+void __init plat_time_init(void)
 {
 	struct device_node *np;
 	struct clk *clk;
@@ -283,61 +278,12 @@ static void __init ath79_of_plat_time_init(void)
 	clk_put(clk);
 }
 
-void __init plat_time_init(void)
-{
-	unsigned long cpu_clk_rate;
-	unsigned long ahb_clk_rate;
-	unsigned long ddr_clk_rate;
-	unsigned long ref_clk_rate;
-
-	if (IS_ENABLED(CONFIG_OF) && mips_machtype == ATH79_MACH_GENERIC_OF) {
-		ath79_of_plat_time_init();
-		return;
-	}
-
-	ath79_clocks_init();
-
-	cpu_clk_rate = ath79_get_sys_clk_rate("cpu");
-	ahb_clk_rate = ath79_get_sys_clk_rate("ahb");
-	ddr_clk_rate = ath79_get_sys_clk_rate("ddr");
-	ref_clk_rate = ath79_get_sys_clk_rate("ref");
-
-	pr_info("Clocks: CPU:%lu.%03luMHz, DDR:%lu.%03luMHz, AHB:%lu.%03luMHz, Ref:%lu.%03luMHz\n",
-		cpu_clk_rate / 1000000, (cpu_clk_rate / 1000) % 1000,
-		ddr_clk_rate / 1000000, (ddr_clk_rate / 1000) % 1000,
-		ahb_clk_rate / 1000000, (ahb_clk_rate / 1000) % 1000,
-		ref_clk_rate / 1000000, (ref_clk_rate / 1000) % 1000);
-
-	mips_hpt_frequency = cpu_clk_rate / 2;
-}
-
-static int __init ath79_setup(void)
+void __init arch_init_irq(void)
 {
-	if  (mips_machtype == ATH79_MACH_GENERIC_OF)
-		return 0;
-
-	ath79_gpio_init();
-	ath79_register_uart();
-	ath79_register_wdt();
-
-	mips_machine_setup();
-
-	return 0;
+	irqchip_init();
 }
 
-arch_initcall(ath79_setup);
-
 void __init device_tree_init(void)
 {
 	unflatten_and_copy_device_tree();
 }
-
-MIPS_MACHINE(ATH79_MACH_GENERIC,
-	     "Generic",
-	     "Generic AR71XX/AR724X/AR913X based board",
-	     NULL);
-
-MIPS_MACHINE(ATH79_MACH_GENERIC_OF,
-	     "DTB",
-	     "Generic AR71XX/AR724X/AR913X based board (DT)",
-	     NULL);
diff --git a/arch/mips/bcm47xx/buttons.c b/arch/mips/bcm47xx/buttons.c
index 977990a609ba..67b6a78d670b 100644
--- a/arch/mips/bcm47xx/buttons.c
+++ b/arch/mips/bcm47xx/buttons.c
@@ -147,7 +147,7 @@ bcm47xx_buttons_buffalo_whr_g125[] __initconst = {
 static const struct gpio_keys_button
 bcm47xx_buttons_buffalo_whr_g54s[] __initconst = {
 	BCM47XX_GPIO_KEY(0, KEY_WPS_BUTTON),
-	BCM47XX_GPIO_KEY(4, KEY_RESTART),
+	BCM47XX_GPIO_KEY_H(4, KEY_RESTART),
 	BCM47XX_GPIO_KEY(5, BTN_0), /* Router / AP mode swtich */
 };
 
diff --git a/arch/mips/bcm47xx/leds.c b/arch/mips/bcm47xx/leds.c
index d85fcdac8bf0..167c42c71e79 100644
--- a/arch/mips/bcm47xx/leds.c
+++ b/arch/mips/bcm47xx/leds.c
@@ -152,11 +152,11 @@ bcm47xx_leds_buffalo_whr_g125[] __initconst = {
 
 static const struct gpio_led
 bcm47xx_leds_buffalo_whr_g54s[] __initconst = {
-	BCM47XX_GPIO_LED(1, "unk", "bridge", 1, LEDS_GPIO_DEFSTATE_OFF),
-	BCM47XX_GPIO_LED(2, "unk", "wlan", 1, LEDS_GPIO_DEFSTATE_OFF),
-	BCM47XX_GPIO_LED(3, "unk", "internal", 1, LEDS_GPIO_DEFSTATE_OFF),
-	BCM47XX_GPIO_LED(6, "unk", "wps", 1, LEDS_GPIO_DEFSTATE_OFF),
-	BCM47XX_GPIO_LED(7, "unk", "diag", 1, LEDS_GPIO_DEFSTATE_OFF),
+	BCM47XX_GPIO_LED(1, "green", "bridge", 1, LEDS_GPIO_DEFSTATE_OFF),
+	BCM47XX_GPIO_LED(2, "green", "wlan", 1, LEDS_GPIO_DEFSTATE_OFF),
+	BCM47XX_GPIO_LED(3, "green", "internal", 1, LEDS_GPIO_DEFSTATE_OFF),
+	BCM47XX_GPIO_LED(6, "amber", "wps", 1, LEDS_GPIO_DEFSTATE_OFF),
+	BCM47XX_GPIO_LED(7, "red", "diag", 1, LEDS_GPIO_DEFSTATE_OFF),
 };
 
 static const struct gpio_led
diff --git a/arch/mips/boot/dts/cavium-octeon/octeon_3xxx.dts b/arch/mips/boot/dts/cavium-octeon/octeon_3xxx.dts
index 0fa3dd1819ff..dda0559cef50 100644
--- a/arch/mips/boot/dts/cavium-octeon/octeon_3xxx.dts
+++ b/arch/mips/boot/dts/cavium-octeon/octeon_3xxx.dts
@@ -180,14 +180,28 @@
 				ethernet@0 {
 					phy-handle = <&phy2>;
 					cavium,alt-phy-handle = <&phy100>;
+					rx-delay = <0>;
+					tx-delay = <0>;
+					fixed-link {
+						speed = <1000>;
+						full-duplex;
+					};
 				};
 				ethernet@1 {
 					phy-handle = <&phy3>;
 					cavium,alt-phy-handle = <&phy101>;
+					rx-delay = <0>;
+					tx-delay = <0>;
+					fixed-link {
+						speed = <1000>;
+						full-duplex;
+					};
 				};
 				ethernet@2 {
 					phy-handle = <&phy4>;
 					cavium,alt-phy-handle = <&phy102>;
+					rx-delay = <0>;
+					tx-delay = <0>;
 				};
 				ethernet@3 {
 					compatible = "cavium,octeon-3860-pip-port";
diff --git a/arch/mips/boot/dts/cavium-octeon/ubnt_e100.dts b/arch/mips/boot/dts/cavium-octeon/ubnt_e100.dts
index 243e5dc444fb..962f37fbc7db 100644
--- a/arch/mips/boot/dts/cavium-octeon/ubnt_e100.dts
+++ b/arch/mips/boot/dts/cavium-octeon/ubnt_e100.dts
@@ -33,12 +33,18 @@
 			interface@0 {
 				ethernet@0 {
 					phy-handle = <&phy7>;
+					rx-delay = <0>;
+					tx-delay = <0x10>;
 				};
 				ethernet@1 {
 					phy-handle = <&phy6>;
+					rx-delay = <0>;
+					tx-delay = <0x10>;
 				};
 				ethernet@2 {
 					phy-handle = <&phy5>;
+					rx-delay = <0>;
+					tx-delay = <0x10>;
 				};
 			};
 		};
diff --git a/arch/mips/cavium-octeon/executive/cvmx-helper-board.c b/arch/mips/cavium-octeon/executive/cvmx-helper-board.c
index ab8362e04461..2e2d45bc850d 100644
--- a/arch/mips/cavium-octeon/executive/cvmx-helper-board.c
+++ b/arch/mips/cavium-octeon/executive/cvmx-helper-board.c
@@ -31,6 +31,7 @@
  * network ports from the rest of the cvmx-helper files.
  */
 
+#include <linux/bug.h>
 #include <asm/octeon/octeon.h>
 #include <asm/octeon/cvmx-bootinfo.h>
 
@@ -210,56 +211,18 @@ cvmx_helper_link_info_t __cvmx_helper_board_link_get(int ipd_port)
 {
 	cvmx_helper_link_info_t result;
 
+	WARN(!octeon_is_simulation(),
+	     "Using deprecated link status - please update your DT");
+
 	/* Unless we fix it later, all links are defaulted to down */
 	result.u64 = 0;
 
-	/*
-	 * This switch statement should handle all ports that either don't use
-	 * Marvell PHYS, or don't support in-band status.
-	 */
-	switch (cvmx_sysinfo_get()->board_type) {
-	case CVMX_BOARD_TYPE_SIM:
+	if (octeon_is_simulation()) {
 		/* The simulator gives you a simulated 1Gbps full duplex link */
 		result.s.link_up = 1;
 		result.s.full_duplex = 1;
 		result.s.speed = 1000;
 		return result;
-	case CVMX_BOARD_TYPE_EBH3100:
-	case CVMX_BOARD_TYPE_CN3010_EVB_HS5:
-	case CVMX_BOARD_TYPE_CN3005_EVB_HS5:
-	case CVMX_BOARD_TYPE_CN3020_EVB_HS5:
-		/* Port 1 on these boards is always Gigabit */
-		if (ipd_port == 1) {
-			result.s.link_up = 1;
-			result.s.full_duplex = 1;
-			result.s.speed = 1000;
-			return result;
-		}
-		/* Fall through to the generic code below */
-		break;
-	case CVMX_BOARD_TYPE_CUST_NB5:
-		/* Port 1 on these boards is always Gigabit */
-		if (ipd_port == 1) {
-			result.s.link_up = 1;
-			result.s.full_duplex = 1;
-			result.s.speed = 1000;
-			return result;
-		}
-		break;
-	case CVMX_BOARD_TYPE_BBGW_REF:
-		/* Port 1 on these boards is always Gigabit */
-		if (ipd_port == 2) {
-			/* Port 2 is not hooked up */
-			result.u64 = 0;
-			return result;
-		} else {
-			/* Ports 0 and 1 connect to the switch */
-			result.s.link_up = 1;
-			result.s.full_duplex = 1;
-			result.s.speed = 1000;
-			return result;
-		}
-		break;
 	}
 
 	if (OCTEON_IS_MODEL(OCTEON_CN3XXX)
@@ -358,45 +321,6 @@ int __cvmx_helper_board_interface_probe(int interface, int supported_ports)
 }
 
 /**
- * Enable packet input/output from the hardware. This function is
- * called after by cvmx_helper_packet_hardware_enable() to
- * perform board specific initialization. For most boards
- * nothing is needed.
- *
- * @interface: Interface to enable
- *
- * Returns Zero on success, negative on failure
- */
-int __cvmx_helper_board_hardware_enable(int interface)
-{
-	if (cvmx_sysinfo_get()->board_type == CVMX_BOARD_TYPE_CN3005_EVB_HS5) {
-		if (interface == 0) {
-			/* Different config for switch port */
-			cvmx_write_csr(CVMX_ASXX_TX_CLK_SETX(1, interface), 0);
-			cvmx_write_csr(CVMX_ASXX_RX_CLK_SETX(1, interface), 0);
-			/*
-			 * Boards with gigabit WAN ports need a
-			 * different setting that is compatible with
-			 * 100 Mbit settings
-			 */
-			cvmx_write_csr(CVMX_ASXX_TX_CLK_SETX(0, interface),
-				       0xc);
-			cvmx_write_csr(CVMX_ASXX_RX_CLK_SETX(0, interface),
-				       0xc);
-		}
-	} else if (cvmx_sysinfo_get()->board_type ==
-			CVMX_BOARD_TYPE_UBNT_E100) {
-		cvmx_write_csr(CVMX_ASXX_RX_CLK_SETX(0, interface), 0);
-		cvmx_write_csr(CVMX_ASXX_TX_CLK_SETX(0, interface), 0x10);
-		cvmx_write_csr(CVMX_ASXX_RX_CLK_SETX(1, interface), 0);
-		cvmx_write_csr(CVMX_ASXX_TX_CLK_SETX(1, interface), 0x10);
-		cvmx_write_csr(CVMX_ASXX_RX_CLK_SETX(2, interface), 0);
-		cvmx_write_csr(CVMX_ASXX_TX_CLK_SETX(2, interface), 0x10);
-	}
-	return 0;
-}
-
-/**
  * Get the clock type used for the USB block based on board type.
  * Used by the USB code for auto configuration of clock type.
  *
diff --git a/arch/mips/cavium-octeon/executive/cvmx-helper.c b/arch/mips/cavium-octeon/executive/cvmx-helper.c
index 38e0444e57e8..de391541d6f7 100644
--- a/arch/mips/cavium-octeon/executive/cvmx-helper.c
+++ b/arch/mips/cavium-octeon/executive/cvmx-helper.c
@@ -30,6 +30,7 @@
  * Helper functions for common, but complicated tasks.
  *
  */
+#include <linux/bug.h>
 #include <asm/octeon/octeon.h>
 
 #include <asm/octeon/cvmx-config.h>
@@ -43,7 +44,6 @@
 #include <asm/octeon/cvmx-helper-board.h>
 
 #include <asm/octeon/cvmx-pip-defs.h>
-#include <asm/octeon/cvmx-smix-defs.h>
 #include <asm/octeon/cvmx-asxx-defs.h>
 
 /* Port count per interface */
@@ -317,22 +317,6 @@ cvmx_helper_interface_mode_t cvmx_helper_interface_get_mode(int interface)
 			return CVMX_HELPER_INTERFACE_MODE_DISABLED;
 	}
 
-	if (interface == 0
-	    && cvmx_sysinfo_get()->board_type == CVMX_BOARD_TYPE_CN3005_EVB_HS5
-	    && cvmx_sysinfo_get()->board_rev_major == 1) {
-		/*
-		 * Lie about interface type of CN3005 board.  This
-		 * board has a switch on port 1 like the other
-		 * evaluation boards, but it is connected over RGMII
-		 * instead of GMII.  Report GMII mode so that the
-		 * speed is forced to 1 Gbit full duplex.  Other than
-		 * some initial configuration (which does not use the
-		 * output of this function) there is no difference in
-		 * setup between GMII and RGMII modes.
-		 */
-		return CVMX_HELPER_INTERFACE_MODE_GMII;
-	}
-
 	/* Interface 1 is always disabled on CN31XX and CN30XX */
 	if ((interface == 1)
 	    && (OCTEON_IS_MODEL(OCTEON_CN31XX) || OCTEON_IS_MODEL(OCTEON_CN30XX)
@@ -778,7 +762,6 @@ static int __cvmx_helper_packet_hardware_enable(int interface)
 		result = __cvmx_helper_loop_enable(interface);
 		break;
 	}
-	result |= __cvmx_helper_board_hardware_enable(interface);
 	return result;
 }
 
@@ -1026,7 +1009,6 @@ int cvmx_helper_initialize_packet_io_global(void)
 	int result = 0;
 	int interface;
 	union cvmx_l2c_cfg l2c_cfg;
-	union cvmx_smix_en smix_en;
 	const int num_interfaces = cvmx_helper_get_number_of_interfaces();
 
 	/*
@@ -1046,24 +1028,6 @@ int cvmx_helper_initialize_packet_io_global(void)
 	l2c_cfg.s.rfb_arb_mode = 0;
 	cvmx_write_csr(CVMX_L2C_CFG, l2c_cfg.u64);
 
-	/* Make sure SMI/MDIO is enabled so we can query PHYs */
-	smix_en.u64 = cvmx_read_csr(CVMX_SMIX_EN(0));
-	if (!smix_en.s.en) {
-		smix_en.s.en = 1;
-		cvmx_write_csr(CVMX_SMIX_EN(0), smix_en.u64);
-	}
-
-	/* Newer chips actually have two SMI/MDIO interfaces */
-	if (!OCTEON_IS_MODEL(OCTEON_CN3XXX) &&
-	    !OCTEON_IS_MODEL(OCTEON_CN58XX) &&
-	    !OCTEON_IS_MODEL(OCTEON_CN50XX)) {
-		smix_en.u64 = cvmx_read_csr(CVMX_SMIX_EN(1));
-		if (!smix_en.s.en) {
-			smix_en.s.en = 1;
-			cvmx_write_csr(CVMX_SMIX_EN(1), smix_en.u64);
-		}
-	}
-
 	cvmx_pko_initialize_global();
 	for (interface = 0; interface < num_interfaces; interface++) {
 		result |= cvmx_helper_interface_probe(interface);
@@ -1136,6 +1100,7 @@ cvmx_helper_link_info_t cvmx_helper_link_get(int ipd_port)
 		if (index == 0)
 			result = __cvmx_helper_rgmii_link_get(ipd_port);
 		else {
+			WARN(1, "Using deprecated link status - please update your DT");
 			result.s.full_duplex = 1;
 			result.s.link_up = 1;
 			result.s.speed = 1000;
diff --git a/arch/mips/cavium-octeon/oct_ilm.c b/arch/mips/cavium-octeon/oct_ilm.c
index 2d68a39f1443..13f6c7716b1e 100644
--- a/arch/mips/cavium-octeon/oct_ilm.c
+++ b/arch/mips/cavium-octeon/oct_ilm.c
@@ -63,31 +63,11 @@ static int reset_statistics(void *data, u64 value)
 
 DEFINE_SIMPLE_ATTRIBUTE(reset_statistics_ops, NULL, reset_statistics, "%llu\n");
 
-static int init_debufs(void)
+static void init_debugfs(void)
 {
-	struct dentry *show_dentry;
 	dir = debugfs_create_dir("oct_ilm", 0);
-	if (!dir) {
-		pr_err("oct_ilm: failed to create debugfs entry oct_ilm\n");
-		return -1;
-	}
-
-	show_dentry = debugfs_create_file("statistics", 0222, dir, NULL,
-					  &oct_ilm_ops);
-	if (!show_dentry) {
-		pr_err("oct_ilm: failed to create debugfs entry oct_ilm/statistics\n");
-		return -1;
-	}
-
-	show_dentry = debugfs_create_file("reset", 0222, dir, NULL,
-					  &reset_statistics_ops);
-	if (!show_dentry) {
-		pr_err("oct_ilm: failed to create debugfs entry oct_ilm/reset\n");
-		return -1;
-	}
-
-	return 0;
-
+	debugfs_create_file("statistics", 0222, dir, NULL, &oct_ilm_ops);
+	debugfs_create_file("reset", 0222, dir, NULL, &reset_statistics_ops);
 }
 
 static void init_latency_info(struct latency_info *li, int startup)
@@ -169,11 +149,7 @@ static __init int oct_ilm_module_init(void)
 	int rc;
 	int irq = OCTEON_IRQ_TIMER0 + TIMER_NUM;
 
-	rc = init_debufs();
-	if (rc) {
-		WARN(1, "Could not create debugfs entries");
-		return rc;
-	}
+	init_debugfs();
 
 	rc = request_irq(irq, cvm_oct_ciu_timer_interrupt, IRQF_NO_THREAD,
 			 "oct_ilm", 0);
diff --git a/arch/mips/cavium-octeon/octeon-platform.c b/arch/mips/cavium-octeon/octeon-platform.c
index 1f9ba60f7375..51685f893eab 100644
--- a/arch/mips/cavium-octeon/octeon-platform.c
+++ b/arch/mips/cavium-octeon/octeon-platform.c
@@ -458,6 +458,23 @@ static bool __init octeon_has_88e1145(void)
 	       !OCTEON_IS_MODEL(OCTEON_CN56XX);
 }
 
+static bool __init octeon_has_fixed_link(int ipd_port)
+{
+	switch (cvmx_sysinfo_get()->board_type) {
+	case CVMX_BOARD_TYPE_CN3005_EVB_HS5:
+	case CVMX_BOARD_TYPE_CN3010_EVB_HS5:
+	case CVMX_BOARD_TYPE_CN3020_EVB_HS5:
+	case CVMX_BOARD_TYPE_CUST_NB5:
+	case CVMX_BOARD_TYPE_EBH3100:
+		/* Port 1 on these boards is always gigabit. */
+		return ipd_port == 1;
+	case CVMX_BOARD_TYPE_BBGW_REF:
+		/* Ports 0 and 1 connect to the switch. */
+		return ipd_port == 0 || ipd_port == 1;
+	}
+	return false;
+}
+
 static void __init octeon_fdt_set_phy(int eth, int phy_addr)
 {
 	const __be32 *phy_handle;
@@ -586,12 +603,52 @@ static void __init octeon_fdt_rm_ethernet(int node)
 	fdt_nop_node(initial_boot_params, node);
 }
 
+static void __init _octeon_rx_tx_delay(int eth, int rx_delay, int tx_delay)
+{
+	fdt_setprop_inplace_cell(initial_boot_params, eth, "rx-delay",
+				 rx_delay);
+	fdt_setprop_inplace_cell(initial_boot_params, eth, "tx-delay",
+				 tx_delay);
+}
+
+static void __init octeon_rx_tx_delay(int eth, int iface, int port)
+{
+	switch (cvmx_sysinfo_get()->board_type) {
+	case CVMX_BOARD_TYPE_CN3005_EVB_HS5:
+		if (iface == 0) {
+			if (port == 0) {
+				/*
+				 * Boards with gigabit WAN ports need a
+				 * different setting that is compatible with
+				 * 100 Mbit settings
+				 */
+				_octeon_rx_tx_delay(eth, 0xc, 0x0c);
+				return;
+			} else if (port == 1) {
+				/* Different config for switch port. */
+				_octeon_rx_tx_delay(eth, 0x0, 0x0);
+				return;
+			}
+		}
+		break;
+	case CVMX_BOARD_TYPE_UBNT_E100:
+		if (iface == 0 && port <= 2) {
+			_octeon_rx_tx_delay(eth, 0x0, 0x10);
+			return;
+		}
+		break;
+	}
+	fdt_nop_property(initial_boot_params, eth, "rx-delay");
+	fdt_nop_property(initial_boot_params, eth, "tx-delay");
+}
+
 static void __init octeon_fdt_pip_port(int iface, int i, int p, int max)
 {
 	char name_buffer[20];
 	int eth;
 	int phy_addr;
 	int ipd_port;
+	int fixed_link;
 
 	snprintf(name_buffer, sizeof(name_buffer), "ethernet@%x", p);
 	eth = fdt_subnode_offset(initial_boot_params, iface, name_buffer);
@@ -609,6 +666,13 @@ static void __init octeon_fdt_pip_port(int iface, int i, int p, int max)
 
 	phy_addr = cvmx_helper_board_get_mii_address(ipd_port);
 	octeon_fdt_set_phy(eth, phy_addr);
+
+	fixed_link = fdt_subnode_offset(initial_boot_params, eth, "fixed-link");
+	if (fixed_link < 0)
+		WARN_ON(octeon_has_fixed_link(ipd_port));
+	else if (!octeon_has_fixed_link(ipd_port))
+		fdt_nop_node(initial_boot_params, fixed_link);
+	octeon_rx_tx_delay(eth, i, p);
 }
 
 static void __init octeon_fdt_pip_iface(int pip, int idx)
diff --git a/arch/mips/configs/xway_defconfig b/arch/mips/configs/xway_defconfig
index c3cac29e8414..2bb02ea9fb4e 100644
--- a/arch/mips/configs/xway_defconfig
+++ b/arch/mips/configs/xway_defconfig
@@ -13,7 +13,6 @@ CONFIG_EMBEDDED=y
 # CONFIG_COMPAT_BRK is not set
 CONFIG_LANTIQ=y
 CONFIG_PCI_LANTIQ=y
-CONFIG_XRX200_PHY_FW=y
 CONFIG_CPU_MIPS32_R2=y
 CONFIG_MIPS_VPE_LOADER=y
 CONFIG_NR_CPUS=2
diff --git a/arch/mips/include/asm/Kbuild b/arch/mips/include/asm/Kbuild
index f15d5db5dd67..87b86cdf126a 100644
--- a/arch/mips/include/asm/Kbuild
+++ b/arch/mips/include/asm/Kbuild
@@ -3,7 +3,6 @@ generated-y += syscall_table_32_o32.h
 generated-y += syscall_table_64_n32.h
 generated-y += syscall_table_64_n64.h
 generated-y += syscall_table_64_o32.h
-generic-(CONFIG_GENERIC_CSUM) += checksum.h
 generic-y += current.h
 generic-y += device.h
 generic-y += dma-contiguous.h
diff --git a/arch/mips/include/asm/barrier.h b/arch/mips/include/asm/barrier.h
index b7f6ac5e513c..b865e317a14f 100644
--- a/arch/mips/include/asm/barrier.h
+++ b/arch/mips/include/asm/barrier.h
@@ -105,6 +105,20 @@
  */
 #define STYPE_SYNC_MB 0x10
 
+/*
+ * stype 0x14 - A completion barrier specific to global invalidations
+ *
+ * When a sync instruction of this type completes any preceding GINVI or GINVT
+ * operation has been globalized & completed on all coherent CPUs. Anything
+ * that the GINV* instruction should invalidate will have been invalidated on
+ * all coherent CPUs when this instruction completes. It is implementation
+ * specific whether the GINV* instructions themselves will ensure completion,
+ * or this sync type will.
+ *
+ * In systems implementing global invalidates (ie. with Config5.GI == 2 or 3)
+ * this sync type also requires that previous SYNCI operations have completed.
+ */
+#define STYPE_GINV	0x14
 
 #ifdef CONFIG_CPU_HAS_SYNC
 #define __sync()				\
@@ -258,6 +272,11 @@
 #define loongson_llsc_mb()	do { } while (0)
 #endif
 
+static inline void sync_ginv(void)
+{
+	asm volatile("sync\t%0" :: "i"(STYPE_GINV));
+}
+
 #include <asm-generic/barrier.h>
 
 #endif /* __ASM_BARRIER_H */
diff --git a/arch/mips/include/asm/cacheflush.h b/arch/mips/include/asm/cacheflush.h
index 4812d1fed0c2..d687b40b9fbb 100644
--- a/arch/mips/include/asm/cacheflush.h
+++ b/arch/mips/include/asm/cacheflush.h
@@ -25,7 +25,6 @@
  *
  * MIPS specific flush operations:
  *
- *  - flush_cache_sigtramp() flush signal trampoline
  *  - flush_icache_all() flush the entire instruction cache
  *  - flush_data_cache_page() flushes a page from the data cache
  *  - __flush_icache_user_range(start, end) flushes range of user instructions
@@ -110,7 +109,6 @@ extern void copy_from_user_page(struct vm_area_struct *vma,
 	struct page *page, unsigned long vaddr, void *dst, const void *src,
 	unsigned long len);
 
-extern void (*flush_cache_sigtramp)(unsigned long addr);
 extern void (*flush_icache_all)(void);
 extern void (*local_flush_data_cache_page)(void * addr);
 extern void (*flush_data_cache_page)(unsigned long addr);
diff --git a/arch/mips/include/asm/cmpxchg.h b/arch/mips/include/asm/cmpxchg.h
index 638de0c25249..f345a873742d 100644
--- a/arch/mips/include/asm/cmpxchg.h
+++ b/arch/mips/include/asm/cmpxchg.h
@@ -36,6 +36,8 @@
  */
 extern unsigned long __cmpxchg_called_with_bad_pointer(void)
 	__compiletime_error("Bad argument size for cmpxchg");
+extern unsigned long __cmpxchg64_unsupported(void)
+	__compiletime_error("cmpxchg64 not available; cpu_has_64bits may be false");
 extern unsigned long __xchg_called_with_bad_pointer(void)
 	__compiletime_error("Bad argument size for xchg");
 
@@ -204,12 +206,102 @@ static inline unsigned long __cmpxchg(volatile void *ptr, unsigned long old,
 	cmpxchg((ptr), (o), (n));					\
   })
 #else
-#include <asm-generic/cmpxchg-local.h>
-#define cmpxchg64_local(ptr, o, n) __cmpxchg64_local_generic((ptr), (o), (n))
-#ifndef CONFIG_SMP
-#define cmpxchg64(ptr, o, n) cmpxchg64_local((ptr), (o), (n))
-#endif
-#endif
+
+# include <asm-generic/cmpxchg-local.h>
+# define cmpxchg64_local(ptr, o, n) __cmpxchg64_local_generic((ptr), (o), (n))
+
+# ifdef CONFIG_SMP
+
+static inline unsigned long __cmpxchg64(volatile void *ptr,
+					unsigned long long old,
+					unsigned long long new)
+{
+	unsigned long long tmp, ret;
+	unsigned long flags;
+
+	/*
+	 * The assembly below has to combine 32 bit values into a 64 bit
+	 * register, and split 64 bit values from one register into two. If we
+	 * were to take an interrupt in the middle of this we'd only save the
+	 * least significant 32 bits of each register & probably clobber the
+	 * most significant 32 bits of the 64 bit values we're using. In order
+	 * to avoid this we must disable interrupts.
+	 */
+	local_irq_save(flags);
+
+	asm volatile(
+	"	.set	push				\n"
+	"	.set	" MIPS_ISA_ARCH_LEVEL "		\n"
+	/* Load 64 bits from ptr */
+	"1:	lld	%L0, %3		# __cmpxchg64	\n"
+	/*
+	 * Split the 64 bit value we loaded into the 2 registers that hold the
+	 * ret variable.
+	 */
+	"	dsra	%M0, %L0, 32			\n"
+	"	sll	%L0, %L0, 0			\n"
+	/*
+	 * Compare ret against old, breaking out of the loop if they don't
+	 * match.
+	 */
+	"	bne	%M0, %M4, 2f			\n"
+	"	bne	%L0, %L4, 2f			\n"
+	/*
+	 * Combine the 32 bit halves from the 2 registers that hold the new
+	 * variable into a single 64 bit register.
+	 */
+#  if MIPS_ISA_REV >= 2
+	"	move	%L1, %L5			\n"
+	"	dins	%L1, %M5, 32, 32		\n"
+#  else
+	"	dsll	%L1, %L5, 32			\n"
+	"	dsrl	%L1, %L1, 32			\n"
+	"	.set	noat				\n"
+	"	dsll	$at, %M5, 32			\n"
+	"	or	%L1, %L1, $at			\n"
+	"	.set	at				\n"
+#  endif
+	/* Attempt to store new at ptr */
+	"	scd	%L1, %2				\n"
+	/* If we failed, loop! */
+	"\t" __scbeqz "	%L1, 1b				\n"
+	"	.set	pop				\n"
+	"2:						\n"
+	: "=&r"(ret),
+	  "=&r"(tmp),
+	  "=" GCC_OFF_SMALL_ASM() (*(unsigned long long *)ptr)
+	: GCC_OFF_SMALL_ASM() (*(unsigned long long *)ptr),
+	  "r" (old),
+	  "r" (new)
+	: "memory");
+
+	local_irq_restore(flags);
+	return ret;
+}
+
+#  define cmpxchg64(ptr, o, n) ({					\
+	unsigned long long __old = (__typeof__(*(ptr)))(o);		\
+	unsigned long long __new = (__typeof__(*(ptr)))(n);		\
+	__typeof__(*(ptr)) __res;					\
+									\
+	/*								\
+	 * We can only use cmpxchg64 if we know that the CPU supports	\
+	 * 64-bits, ie. lld & scd. Our call to __cmpxchg64_unsupported	\
+	 * will cause a build error unless cpu_has_64bits is a		\
+	 * compile-time constant 1.					\
+	 */								\
+	if (cpu_has_64bits && kernel_uses_llsc)				\
+		__res = __cmpxchg64((ptr), __old, __new);		\
+	else								\
+		__res = __cmpxchg64_unsupported();			\
+									\
+	__res;								\
+})
+
+# else /* !CONFIG_SMP */
+#  define cmpxchg64(ptr, o, n) cmpxchg64_local((ptr), (o), (n))
+# endif /* !CONFIG_SMP */
+#endif /* !CONFIG_64BIT */
 
 #undef __scbeqz
 
diff --git a/arch/mips/include/asm/cpu-features.h b/arch/mips/include/asm/cpu-features.h
index 701e525641b8..6998a9796499 100644
--- a/arch/mips/include/asm/cpu-features.h
+++ b/arch/mips/include/asm/cpu-features.h
@@ -591,6 +591,19 @@
 #endif /* CONFIG_MIPS_MT_SMP */
 
 /*
+ * We only enable MMID support for configurations which natively support 64 bit
+ * atomics because getting good performance from the allocator relies upon
+ * efficient atomic64_*() functions.
+ */
+#ifndef cpu_has_mmid
+# ifdef CONFIG_GENERIC_ATOMIC64
+#  define cpu_has_mmid		0
+# else
+#  define cpu_has_mmid		__isa_ge_and_opt(6, MIPS_CPU_MMID)
+# endif
+#endif
+
+/*
  * Guest capabilities
  */
 #ifndef cpu_guest_has_conf1
diff --git a/arch/mips/include/asm/cpu.h b/arch/mips/include/asm/cpu.h
index 532b49b1dbb3..6ad7d3cabd91 100644
--- a/arch/mips/include/asm/cpu.h
+++ b/arch/mips/include/asm/cpu.h
@@ -422,6 +422,7 @@ enum cpu_type_enum {
 				MBIT_ULL(55)	/* CPU shares FTLB entries with another */
 #define MIPS_CPU_MT_PER_TC_PERF_COUNTERS \
 				MBIT_ULL(56)	/* CPU has perf counters implemented per TC (MIPSMT ASE) */
+#define MIPS_CPU_MMID		MBIT_ULL(57)	/* CPU supports MemoryMapIDs */
 
 /*
  * CPU ASE encodings
diff --git a/arch/mips/include/asm/ginvt.h b/arch/mips/include/asm/ginvt.h
new file mode 100644
index 000000000000..49c6dbe37338
--- /dev/null
+++ b/arch/mips/include/asm/ginvt.h
@@ -0,0 +1,56 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __MIPS_ASM_GINVT_H__
+#define __MIPS_ASM_GINVT_H__
+
+#include <asm/mipsregs.h>
+
+enum ginvt_type {
+	GINVT_FULL,
+	GINVT_VA,
+	GINVT_MMID,
+};
+
+#ifdef TOOLCHAIN_SUPPORTS_GINV
+# define _ASM_SET_GINV	".set	ginv\n"
+#else
+_ASM_MACRO_1R1I(ginvt, rs, type,
+		_ASM_INSN_IF_MIPS(0x7c0000bd | (__rs << 21) | (\\type << 8))
+		_ASM_INSN32_IF_MM(0x0000717c | (__rs << 16) | (\\type << 9)));
+# define _ASM_SET_GINV
+#endif
+
+static inline void ginvt(unsigned long addr, enum ginvt_type type)
+{
+	asm volatile(
+		".set	push\n"
+		_ASM_SET_GINV
+		"	ginvt	%0, %1\n"
+		".set	pop"
+		: /* no outputs */
+		: "r"(addr), "i"(type)
+		: "memory");
+}
+
+static inline void ginvt_full(void)
+{
+	ginvt(0, GINVT_FULL);
+}
+
+static inline void ginvt_va(unsigned long addr)
+{
+	addr &= PAGE_MASK << 1;
+	ginvt(addr, GINVT_VA);
+}
+
+static inline void ginvt_mmid(void)
+{
+	ginvt(0, GINVT_MMID);
+}
+
+static inline void ginvt_va_mmid(unsigned long addr)
+{
+	addr &= PAGE_MASK << 1;
+	ginvt(addr, GINVT_VA | GINVT_MMID);
+}
+
+#endif /* __MIPS_ASM_GINVT_H__ */
diff --git a/arch/mips/include/asm/irqflags.h b/arch/mips/include/asm/irqflags.h
index 9d3610be2323..f0b862a83816 100644
--- a/arch/mips/include/asm/irqflags.h
+++ b/arch/mips/include/asm/irqflags.h
@@ -41,7 +41,7 @@ static inline unsigned long arch_local_irq_save(void)
 	"	.set	push						\n"
 	"	.set	reorder						\n"
 	"	.set	noat						\n"
-#if defined(CONFIG_CPU_LOONGSON3)
+#if defined(CONFIG_CPU_LOONGSON3) || defined (CONFIG_CPU_LOONGSON1)
 	"	mfc0	%[flags], $12					\n"
 	"	di							\n"
 #else
diff --git a/arch/mips/include/asm/mach-ath79/ath79.h b/arch/mips/include/asm/mach-ath79/ath79.h
index 73dcd63b8243..47e8827e9564 100644
--- a/arch/mips/include/asm/mach-ath79/ath79.h
+++ b/arch/mips/include/asm/mach-ath79/ath79.h
@@ -178,8 +178,4 @@ static inline u32 ath79_reset_rr(unsigned reg)
 void ath79_device_reset_set(u32 mask);
 void ath79_device_reset_clear(u32 mask);
 
-void ath79_cpu_irq_init(unsigned irq_wb_chan2, unsigned irq_wb_chan3);
-void ath79_misc_irq_init(void __iomem *regs, int irq,
-			int irq_base, bool is_ar71xx);
-
 #endif /* __ASM_MACH_ATH79_H */
diff --git a/arch/mips/include/asm/mach-ip27/irq.h b/arch/mips/include/asm/mach-ip27/irq.h
index b0b7261ff3ad..fd91c58aaf7d 100644
--- a/arch/mips/include/asm/mach-ip27/irq.h
+++ b/arch/mips/include/asm/mach-ip27/irq.h
@@ -10,13 +10,15 @@
 #ifndef __ASM_MACH_IP27_IRQ_H
 #define __ASM_MACH_IP27_IRQ_H
 
-/*
- * A hardwired interrupt number is completely stupid for this system - a
- * large configuration might have thousands if not tenthousands of
- * interrupts.
- */
 #define NR_IRQS 256
 
 #include_next <irq.h>
 
+#define IP27_HUB_PEND0_IRQ	(MIPS_CPU_IRQ_BASE + 2)
+#define IP27_HUB_PEND1_IRQ	(MIPS_CPU_IRQ_BASE + 3)
+#define IP27_RT_TIMER_IRQ	(MIPS_CPU_IRQ_BASE + 4)
+
+#define IP27_HUB_IRQ_BASE	(MIPS_CPU_IRQ_BASE + 8)
+#define IP27_HUB_IRQ_COUNT	128
+
 #endif /* __ASM_MACH_IP27_IRQ_H */
diff --git a/arch/mips/include/asm/mach-ip27/mmzone.h b/arch/mips/include/asm/mach-ip27/mmzone.h
index 2ed3094dee07..1cd6a23a84f2 100644
--- a/arch/mips/include/asm/mach-ip27/mmzone.h
+++ b/arch/mips/include/asm/mach-ip27/mmzone.h
@@ -8,20 +8,11 @@
 
 #define pa_to_nid(addr)		NASID_TO_COMPACT_NODEID(NASID_GET(addr))
 
-#define LEVELS_PER_SLICE	128
-
-struct slice_data {
-	unsigned long irq_enable_mask[2];
-	int level_to_irq[LEVELS_PER_SLICE];
-};
-
 struct hub_data {
 	kern_vars_t	kern_vars;
 	DECLARE_BITMAP(h_bigwin_used, HUB_NUM_BIG_WINDOW);
 	cpumask_t	h_cpus;
 	unsigned long slice_map;
-	unsigned long irq_alloc_mask[2];
-	struct slice_data slice[2];
 };
 
 struct node_data {
diff --git a/arch/mips/include/asm/mach-loongson32/platform.h b/arch/mips/include/asm/mach-loongson32/platform.h
index 8f8fa43ba095..15d1de2300fe 100644
--- a/arch/mips/include/asm/mach-loongson32/platform.h
+++ b/arch/mips/include/asm/mach-loongson32/platform.h
@@ -17,19 +17,15 @@
 
 extern struct platform_device ls1x_uart_pdev;
 extern struct platform_device ls1x_cpufreq_pdev;
-extern struct platform_device ls1x_dma_pdev;
 extern struct platform_device ls1x_eth0_pdev;
 extern struct platform_device ls1x_eth1_pdev;
 extern struct platform_device ls1x_ehci_pdev;
 extern struct platform_device ls1x_gpio0_pdev;
 extern struct platform_device ls1x_gpio1_pdev;
-extern struct platform_device ls1x_nand_pdev;
 extern struct platform_device ls1x_rtc_pdev;
 extern struct platform_device ls1x_wdt_pdev;
 
 void __init ls1x_clk_init(void);
-void __init ls1x_dma_set_platdata(struct plat_ls1x_dma *pdata);
-void __init ls1x_nand_set_platdata(struct plat_ls1x_nand *pdata);
 void __init ls1x_rtc_set_extclk(struct platform_device *pdev);
 void __init ls1x_serial_set_uartclk(struct platform_device *pdev);
 
diff --git a/arch/mips/include/asm/mipsregs.h b/arch/mips/include/asm/mipsregs.h
index 402b80af91aa..1e6966e8527e 100644
--- a/arch/mips/include/asm/mipsregs.h
+++ b/arch/mips/include/asm/mipsregs.h
@@ -667,6 +667,7 @@
 #define MIPS_CONF5_FRE		(_ULCAST_(1) << 8)
 #define MIPS_CONF5_UFE		(_ULCAST_(1) << 9)
 #define MIPS_CONF5_CA2		(_ULCAST_(1) << 14)
+#define MIPS_CONF5_MI		(_ULCAST_(1) << 17)
 #define MIPS_CONF5_CRCP		(_ULCAST_(1) << 18)
 #define MIPS_CONF5_MSAEN	(_ULCAST_(1) << 27)
 #define MIPS_CONF5_EVA		(_ULCAST_(1) << 28)
@@ -1247,6 +1248,13 @@ __asm__(".macro	parse_r var r\n\t"
 		ENC							\
 		".endm")
 
+/* Instructions with 1 register operand & 1 immediate operand */
+#define _ASM_MACRO_1R1I(OP, R1, I2, ENC)				\
+	__asm__(".macro	" #OP " " #R1 ", " #I2 "\n\t"			\
+		"parse_r __" #R1 ", \\" #R1 "\n\t"			\
+		ENC							\
+		".endm")
+
 /* Instructions with 2 register operands */
 #define _ASM_MACRO_2R(OP, R1, R2, ENC)					\
 	__asm__(".macro	" #OP " " #R1 ", " #R2 "\n\t"			\
@@ -1603,6 +1611,9 @@ do {									\
 #define read_c0_xcontextconfig()	__read_ulong_c0_register($4, 3)
 #define write_c0_xcontextconfig(val)	__write_ulong_c0_register($4, 3, val)
 
+#define read_c0_memorymapid()		__read_32bit_c0_register($4, 5)
+#define write_c0_memorymapid(val)	__write_32bit_c0_register($4, 5, val)
+
 #define read_c0_pagemask()	__read_32bit_c0_register($5, 0)
 #define write_c0_pagemask(val)	__write_32bit_c0_register($5, 0, val)
 
diff --git a/arch/mips/include/asm/mmu.h b/arch/mips/include/asm/mmu.h
index 88a108ce62c1..5df0238f639b 100644
--- a/arch/mips/include/asm/mmu.h
+++ b/arch/mips/include/asm/mmu.h
@@ -7,7 +7,11 @@
 #include <linux/wait.h>
 
 typedef struct {
-	u64 asid[NR_CPUS];
+	union {
+		u64 asid[NR_CPUS];
+		atomic64_t mmid;
+	};
+
 	void *vdso;
 
 	/* lock to be held whilst modifying fp_bd_emupage_allocmap */
diff --git a/arch/mips/include/asm/mmu_context.h b/arch/mips/include/asm/mmu_context.h
index a589585be21b..cddead91acd4 100644
--- a/arch/mips/include/asm/mmu_context.h
+++ b/arch/mips/include/asm/mmu_context.h
@@ -17,8 +17,10 @@
 #include <linux/smp.h>
 #include <linux/slab.h>
 
+#include <asm/barrier.h>
 #include <asm/cacheflush.h>
 #include <asm/dsemul.h>
+#include <asm/ginvt.h>
 #include <asm/hazards.h>
 #include <asm/tlbflush.h>
 #include <asm-generic/mm_hooks.h>
@@ -73,6 +75,19 @@ extern unsigned long pgd_current[];
 #endif /* CONFIG_MIPS_PGD_C0_CONTEXT*/
 
 /*
+ * The ginvt instruction will invalidate wired entries when its type field
+ * targets anything other than the entire TLB. That means that if we were to
+ * allow the kernel to create wired entries with the MMID of current->active_mm
+ * then those wired entries could be invalidated when we later use ginvt to
+ * invalidate TLB entries with that MMID.
+ *
+ * In order to prevent ginvt from trashing wired entries, we reserve one MMID
+ * for use by the kernel when creating wired entries. This MMID will never be
+ * assigned to a struct mm, and we'll never target it with a ginvt instruction.
+ */
+#define MMID_KERNEL_WIRED	0
+
+/*
  *  All unused by hardware upper bits will be considered
  *  as a software asid extension.
  */
@@ -88,7 +103,23 @@ static inline u64 asid_first_version(unsigned int cpu)
 	return ~asid_version_mask(cpu) + 1;
 }
 
-#define cpu_context(cpu, mm)	((mm)->context.asid[cpu])
+static inline u64 cpu_context(unsigned int cpu, const struct mm_struct *mm)
+{
+	if (cpu_has_mmid)
+		return atomic64_read(&mm->context.mmid);
+
+	return mm->context.asid[cpu];
+}
+
+static inline void set_cpu_context(unsigned int cpu,
+				   struct mm_struct *mm, u64 ctx)
+{
+	if (cpu_has_mmid)
+		atomic64_set(&mm->context.mmid, ctx);
+	else
+		mm->context.asid[cpu] = ctx;
+}
+
 #define asid_cache(cpu)		(cpu_data[cpu].asid_cache)
 #define cpu_asid(cpu, mm) \
 	(cpu_context((cpu), (mm)) & cpu_asid_mask(&cpu_data[cpu]))
@@ -97,21 +128,9 @@ static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk)
 {
 }
 
-
-/* Normal, classic MIPS get_new_mmu_context */
-static inline void
-get_new_mmu_context(struct mm_struct *mm, unsigned long cpu)
-{
-	u64 asid = asid_cache(cpu);
-
-	if (!((asid += cpu_asid_inc()) & cpu_asid_mask(&cpu_data[cpu]))) {
-		if (cpu_has_vtag_icache)
-			flush_icache_all();
-		local_flush_tlb_all();	/* start new asid cycle */
-	}
-
-	cpu_context(cpu, mm) = asid_cache(cpu) = asid;
-}
+extern void get_new_mmu_context(struct mm_struct *mm);
+extern void check_mmu_context(struct mm_struct *mm);
+extern void check_switch_mmu_context(struct mm_struct *mm);
 
 /*
  * Initialize the context related info for a new mm_struct
@@ -122,8 +141,12 @@ init_new_context(struct task_struct *tsk, struct mm_struct *mm)
 {
 	int i;
 
-	for_each_possible_cpu(i)
-		cpu_context(i, mm) = 0;
+	if (cpu_has_mmid) {
+		set_cpu_context(0, mm, 0);
+	} else {
+		for_each_possible_cpu(i)
+			set_cpu_context(i, mm, 0);
+	}
 
 	mm->context.bd_emupage_allocmap = NULL;
 	spin_lock_init(&mm->context.bd_emupage_lock);
@@ -140,11 +163,7 @@ static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
 	local_irq_save(flags);
 
 	htw_stop();
-	/* Check if our ASID is of an older version and thus invalid */
-	if ((cpu_context(cpu, next) ^ asid_cache(cpu)) & asid_version_mask(cpu))
-		get_new_mmu_context(next, cpu);
-	write_c0_entryhi(cpu_asid(cpu, next));
-	TLBMISS_HANDLER_SETUP_PGD(next->pgd);
+	check_switch_mmu_context(next);
 
 	/*
 	 * Mark current->active_mm as not "active" anymore.
@@ -166,55 +185,55 @@ static inline void destroy_context(struct mm_struct *mm)
 	dsemul_mm_cleanup(mm);
 }
 
+#define activate_mm(prev, next)	switch_mm(prev, next, current)
 #define deactivate_mm(tsk, mm)	do { } while (0)
 
-/*
- * After we have set current->mm to a new value, this activates
- * the context for the new mm so we see the new mappings.
- */
-static inline void
-activate_mm(struct mm_struct *prev, struct mm_struct *next)
-{
-	unsigned long flags;
-	unsigned int cpu = smp_processor_id();
-
-	local_irq_save(flags);
-
-	htw_stop();
-	/* Unconditionally get a new ASID.  */
-	get_new_mmu_context(next, cpu);
-
-	write_c0_entryhi(cpu_asid(cpu, next));
-	TLBMISS_HANDLER_SETUP_PGD(next->pgd);
-
-	/* mark mmu ownership change */
-	cpumask_clear_cpu(cpu, mm_cpumask(prev));
-	cpumask_set_cpu(cpu, mm_cpumask(next));
-	htw_start();
-
-	local_irq_restore(flags);
-}
-
-/*
- * If mm is currently active_mm, we can't really drop it.  Instead,
- * we will get a new one for it.
- */
 static inline void
-drop_mmu_context(struct mm_struct *mm, unsigned cpu)
+drop_mmu_context(struct mm_struct *mm)
 {
 	unsigned long flags;
+	unsigned int cpu;
+	u32 old_mmid;
+	u64 ctx;
 
 	local_irq_save(flags);
-	htw_stop();
 
-	if (cpumask_test_cpu(cpu, mm_cpumask(mm)))  {
-		get_new_mmu_context(mm, cpu);
+	cpu = smp_processor_id();
+	ctx = cpu_context(cpu, mm);
+
+	if (!ctx) {
+		/* no-op */
+	} else if (cpu_has_mmid) {
+		/*
+		 * Globally invalidating TLB entries associated with the MMID
+		 * is pretty cheap using the GINVT instruction, so we'll do
+		 * that rather than incur the overhead of allocating a new
+		 * MMID. The latter would be especially difficult since MMIDs
+		 * are global & other CPUs may be actively using ctx.
+		 */
+		htw_stop();
+		old_mmid = read_c0_memorymapid();
+		write_c0_memorymapid(ctx & cpu_asid_mask(&cpu_data[cpu]));
+		mtc0_tlbw_hazard();
+		ginvt_mmid();
+		sync_ginv();
+		write_c0_memorymapid(old_mmid);
+		instruction_hazard();
+		htw_start();
+	} else if (cpumask_test_cpu(cpu, mm_cpumask(mm))) {
+		/*
+		 * mm is currently active, so we can't really drop it.
+		 * Instead we bump the ASID.
+		 */
+		htw_stop();
+		get_new_mmu_context(mm);
 		write_c0_entryhi(cpu_asid(cpu, mm));
+		htw_start();
 	} else {
 		/* will get a new context next time */
-		cpu_context(cpu, mm) = 0;
+		set_cpu_context(cpu, mm, 0);
 	}
-	htw_start();
+
 	local_irq_restore(flags);
 }
 
diff --git a/arch/mips/include/asm/octeon/cvmx-helper-board.h b/arch/mips/include/asm/octeon/cvmx-helper-board.h
index b4d19c21b62c..d7fdcf0a0088 100644
--- a/arch/mips/include/asm/octeon/cvmx-helper-board.h
+++ b/arch/mips/include/asm/octeon/cvmx-helper-board.h
@@ -119,18 +119,6 @@ extern cvmx_helper_link_info_t __cvmx_helper_board_link_get(int ipd_port);
 extern int __cvmx_helper_board_interface_probe(int interface,
 					       int supported_ports);
 
-/**
- * Enable packet input/output from the hardware. This function is
- * called after by cvmx_helper_packet_hardware_enable() to
- * perform board specific initialization. For most boards
- * nothing is needed.
- *
- * @interface: Interface to enable
- *
- * Returns Zero on success, negative on failure
- */
-extern int __cvmx_helper_board_hardware_enable(int interface);
-
 enum cvmx_helper_board_usb_clock_types __cvmx_helper_board_usb_get_clock_type(void);
 
 #endif /* __CVMX_HELPER_BOARD_H__ */
diff --git a/arch/mips/include/asm/octeon/cvmx-smix-defs.h b/arch/mips/include/asm/octeon/cvmx-smix-defs.h
deleted file mode 100644
index 7a928230b0c0..000000000000
--- a/arch/mips/include/asm/octeon/cvmx-smix-defs.h
+++ /dev/null
@@ -1,276 +0,0 @@
-/***********************license start***************
- * Author: Cavium Networks
- *
- * Contact: support@caviumnetworks.com
- * This file is part of the OCTEON SDK
- *
- * Copyright (c) 2003-2012 Cavium Networks
- *
- * This file is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License, Version 2, as
- * published by the Free Software Foundation.
- *
- * This file is distributed in the hope that it will be useful, but
- * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
- * NONINFRINGEMENT.  See the GNU General Public License for more
- * details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this file; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- * or visit http://www.gnu.org/licenses/.
- *
- * This file may also be available under a different license from Cavium.
- * Contact Cavium Networks for more information
- ***********************license end**************************************/
-
-#ifndef __CVMX_SMIX_DEFS_H__
-#define __CVMX_SMIX_DEFS_H__
-
-static inline uint64_t CVMX_SMIX_CLK(unsigned long offset)
-{
-	switch (cvmx_get_octeon_family()) {
-	case OCTEON_CN30XX & OCTEON_FAMILY_MASK:
-	case OCTEON_CN50XX & OCTEON_FAMILY_MASK:
-	case OCTEON_CN38XX & OCTEON_FAMILY_MASK:
-	case OCTEON_CN31XX & OCTEON_FAMILY_MASK:
-	case OCTEON_CN58XX & OCTEON_FAMILY_MASK:
-		return CVMX_ADD_IO_SEG(0x0001180000001818ull) + (offset) * 256;
-	case OCTEON_CNF71XX & OCTEON_FAMILY_MASK:
-	case OCTEON_CN61XX & OCTEON_FAMILY_MASK:
-	case OCTEON_CN56XX & OCTEON_FAMILY_MASK:
-	case OCTEON_CN66XX & OCTEON_FAMILY_MASK:
-	case OCTEON_CN52XX & OCTEON_FAMILY_MASK:
-	case OCTEON_CN63XX & OCTEON_FAMILY_MASK:
-		return CVMX_ADD_IO_SEG(0x0001180000001818ull) + (offset) * 256;
-	case OCTEON_CN68XX & OCTEON_FAMILY_MASK:
-		return CVMX_ADD_IO_SEG(0x0001180000003818ull) + (offset) * 128;
-	}
-	return CVMX_ADD_IO_SEG(0x0001180000001818ull) + (offset) * 256;
-}
-
-static inline uint64_t CVMX_SMIX_CMD(unsigned long offset)
-{
-	switch (cvmx_get_octeon_family()) {
-	case OCTEON_CN30XX & OCTEON_FAMILY_MASK:
-	case OCTEON_CN50XX & OCTEON_FAMILY_MASK:
-	case OCTEON_CN38XX & OCTEON_FAMILY_MASK:
-	case OCTEON_CN31XX & OCTEON_FAMILY_MASK:
-	case OCTEON_CN58XX & OCTEON_FAMILY_MASK:
-		return CVMX_ADD_IO_SEG(0x0001180000001800ull) + (offset) * 256;
-	case OCTEON_CNF71XX & OCTEON_FAMILY_MASK:
-	case OCTEON_CN61XX & OCTEON_FAMILY_MASK:
-	case OCTEON_CN56XX & OCTEON_FAMILY_MASK:
-	case OCTEON_CN66XX & OCTEON_FAMILY_MASK:
-	case OCTEON_CN52XX & OCTEON_FAMILY_MASK:
-	case OCTEON_CN63XX & OCTEON_FAMILY_MASK:
-		return CVMX_ADD_IO_SEG(0x0001180000001800ull) + (offset) * 256;
-	case OCTEON_CN68XX & OCTEON_FAMILY_MASK:
-		return CVMX_ADD_IO_SEG(0x0001180000003800ull) + (offset) * 128;
-	}
-	return CVMX_ADD_IO_SEG(0x0001180000001800ull) + (offset) * 256;
-}
-
-static inline uint64_t CVMX_SMIX_EN(unsigned long offset)
-{
-	switch (cvmx_get_octeon_family()) {
-	case OCTEON_CN30XX & OCTEON_FAMILY_MASK:
-	case OCTEON_CN50XX & OCTEON_FAMILY_MASK:
-	case OCTEON_CN38XX & OCTEON_FAMILY_MASK:
-	case OCTEON_CN31XX & OCTEON_FAMILY_MASK:
-	case OCTEON_CN58XX & OCTEON_FAMILY_MASK:
-		return CVMX_ADD_IO_SEG(0x0001180000001820ull) + (offset) * 256;
-	case OCTEON_CNF71XX & OCTEON_FAMILY_MASK:
-	case OCTEON_CN61XX & OCTEON_FAMILY_MASK:
-	case OCTEON_CN56XX & OCTEON_FAMILY_MASK:
-	case OCTEON_CN66XX & OCTEON_FAMILY_MASK:
-	case OCTEON_CN52XX & OCTEON_FAMILY_MASK:
-	case OCTEON_CN63XX & OCTEON_FAMILY_MASK:
-		return CVMX_ADD_IO_SEG(0x0001180000001820ull) + (offset) * 256;
-	case OCTEON_CN68XX & OCTEON_FAMILY_MASK:
-		return CVMX_ADD_IO_SEG(0x0001180000003820ull) + (offset) * 128;
-	}
-	return CVMX_ADD_IO_SEG(0x0001180000001820ull) + (offset) * 256;
-}
-
-static inline uint64_t CVMX_SMIX_RD_DAT(unsigned long offset)
-{
-	switch (cvmx_get_octeon_family()) {
-	case OCTEON_CN30XX & OCTEON_FAMILY_MASK:
-	case OCTEON_CN50XX & OCTEON_FAMILY_MASK:
-	case OCTEON_CN38XX & OCTEON_FAMILY_MASK:
-	case OCTEON_CN31XX & OCTEON_FAMILY_MASK:
-	case OCTEON_CN58XX & OCTEON_FAMILY_MASK:
-		return CVMX_ADD_IO_SEG(0x0001180000001810ull) + (offset) * 256;
-	case OCTEON_CNF71XX & OCTEON_FAMILY_MASK:
-	case OCTEON_CN61XX & OCTEON_FAMILY_MASK:
-	case OCTEON_CN56XX & OCTEON_FAMILY_MASK:
-	case OCTEON_CN66XX & OCTEON_FAMILY_MASK:
-	case OCTEON_CN52XX & OCTEON_FAMILY_MASK:
-	case OCTEON_CN63XX & OCTEON_FAMILY_MASK:
-		return CVMX_ADD_IO_SEG(0x0001180000001810ull) + (offset) * 256;
-	case OCTEON_CN68XX & OCTEON_FAMILY_MASK:
-		return CVMX_ADD_IO_SEG(0x0001180000003810ull) + (offset) * 128;
-	}
-	return CVMX_ADD_IO_SEG(0x0001180000001810ull) + (offset) * 256;
-}
-
-static inline uint64_t CVMX_SMIX_WR_DAT(unsigned long offset)
-{
-	switch (cvmx_get_octeon_family()) {
-	case OCTEON_CN30XX & OCTEON_FAMILY_MASK:
-	case OCTEON_CN50XX & OCTEON_FAMILY_MASK:
-	case OCTEON_CN38XX & OCTEON_FAMILY_MASK:
-	case OCTEON_CN31XX & OCTEON_FAMILY_MASK:
-	case OCTEON_CN58XX & OCTEON_FAMILY_MASK:
-		return CVMX_ADD_IO_SEG(0x0001180000001808ull) + (offset) * 256;
-	case OCTEON_CNF71XX & OCTEON_FAMILY_MASK:
-	case OCTEON_CN61XX & OCTEON_FAMILY_MASK:
-	case OCTEON_CN56XX & OCTEON_FAMILY_MASK:
-	case OCTEON_CN66XX & OCTEON_FAMILY_MASK:
-	case OCTEON_CN52XX & OCTEON_FAMILY_MASK:
-	case OCTEON_CN63XX & OCTEON_FAMILY_MASK:
-		return CVMX_ADD_IO_SEG(0x0001180000001808ull) + (offset) * 256;
-	case OCTEON_CN68XX & OCTEON_FAMILY_MASK:
-		return CVMX_ADD_IO_SEG(0x0001180000003808ull) + (offset) * 128;
-	}
-	return CVMX_ADD_IO_SEG(0x0001180000001808ull) + (offset) * 256;
-}
-
-union cvmx_smix_clk {
-	uint64_t u64;
-	struct cvmx_smix_clk_s {
-#ifdef __BIG_ENDIAN_BITFIELD
-		uint64_t reserved_25_63:39;
-		uint64_t mode:1;
-		uint64_t reserved_21_23:3;
-		uint64_t sample_hi:5;
-		uint64_t sample_mode:1;
-		uint64_t reserved_14_14:1;
-		uint64_t clk_idle:1;
-		uint64_t preamble:1;
-		uint64_t sample:4;
-		uint64_t phase:8;
-#else
-		uint64_t phase:8;
-		uint64_t sample:4;
-		uint64_t preamble:1;
-		uint64_t clk_idle:1;
-		uint64_t reserved_14_14:1;
-		uint64_t sample_mode:1;
-		uint64_t sample_hi:5;
-		uint64_t reserved_21_23:3;
-		uint64_t mode:1;
-		uint64_t reserved_25_63:39;
-#endif
-	} s;
-	struct cvmx_smix_clk_cn30xx {
-#ifdef __BIG_ENDIAN_BITFIELD
-		uint64_t reserved_21_63:43;
-		uint64_t sample_hi:5;
-		uint64_t sample_mode:1;
-		uint64_t reserved_14_14:1;
-		uint64_t clk_idle:1;
-		uint64_t preamble:1;
-		uint64_t sample:4;
-		uint64_t phase:8;
-#else
-		uint64_t phase:8;
-		uint64_t sample:4;
-		uint64_t preamble:1;
-		uint64_t clk_idle:1;
-		uint64_t reserved_14_14:1;
-		uint64_t sample_mode:1;
-		uint64_t sample_hi:5;
-		uint64_t reserved_21_63:43;
-#endif
-	} cn30xx;
-};
-
-union cvmx_smix_cmd {
-	uint64_t u64;
-	struct cvmx_smix_cmd_s {
-#ifdef __BIG_ENDIAN_BITFIELD
-		uint64_t reserved_18_63:46;
-		uint64_t phy_op:2;
-		uint64_t reserved_13_15:3;
-		uint64_t phy_adr:5;
-		uint64_t reserved_5_7:3;
-		uint64_t reg_adr:5;
-#else
-		uint64_t reg_adr:5;
-		uint64_t reserved_5_7:3;
-		uint64_t phy_adr:5;
-		uint64_t reserved_13_15:3;
-		uint64_t phy_op:2;
-		uint64_t reserved_18_63:46;
-#endif
-	} s;
-	struct cvmx_smix_cmd_cn30xx {
-#ifdef __BIG_ENDIAN_BITFIELD
-		uint64_t reserved_17_63:47;
-		uint64_t phy_op:1;
-		uint64_t reserved_13_15:3;
-		uint64_t phy_adr:5;
-		uint64_t reserved_5_7:3;
-		uint64_t reg_adr:5;
-#else
-		uint64_t reg_adr:5;
-		uint64_t reserved_5_7:3;
-		uint64_t phy_adr:5;
-		uint64_t reserved_13_15:3;
-		uint64_t phy_op:1;
-		uint64_t reserved_17_63:47;
-#endif
-	} cn30xx;
-};
-
-union cvmx_smix_en {
-	uint64_t u64;
-	struct cvmx_smix_en_s {
-#ifdef __BIG_ENDIAN_BITFIELD
-		uint64_t reserved_1_63:63;
-		uint64_t en:1;
-#else
-		uint64_t en:1;
-		uint64_t reserved_1_63:63;
-#endif
-	} s;
-};
-
-union cvmx_smix_rd_dat {
-	uint64_t u64;
-	struct cvmx_smix_rd_dat_s {
-#ifdef __BIG_ENDIAN_BITFIELD
-		uint64_t reserved_18_63:46;
-		uint64_t pending:1;
-		uint64_t val:1;
-		uint64_t dat:16;
-#else
-		uint64_t dat:16;
-		uint64_t val:1;
-		uint64_t pending:1;
-		uint64_t reserved_18_63:46;
-#endif
-	} s;
-};
-
-union cvmx_smix_wr_dat {
-	uint64_t u64;
-	struct cvmx_smix_wr_dat_s {
-#ifdef __BIG_ENDIAN_BITFIELD
-		uint64_t reserved_18_63:46;
-		uint64_t pending:1;
-		uint64_t val:1;
-		uint64_t dat:16;
-#else
-		uint64_t dat:16;
-		uint64_t val:1;
-		uint64_t pending:1;
-		uint64_t reserved_18_63:46;
-#endif
-	} s;
-};
-
-#endif
diff --git a/arch/mips/include/asm/pci/bridge.h b/arch/mips/include/asm/pci/bridge.h
index 3206245d1ed6..23574c27eb40 100644
--- a/arch/mips/include/asm/pci/bridge.h
+++ b/arch/mips/include/asm/pci/bridge.h
@@ -45,18 +45,21 @@
 
 #ifndef __ASSEMBLY__
 
-/*
- * All accesses to bridge hardware registers must be done
- * using 32-bit loads and stores.
- */
-typedef u32	bridgereg_t;
+#define ATE_V		0x01
+#define ATE_CO		0x02
+#define ATE_PREC	0x04
+#define ATE_PREF	0x08
+#define ATE_BAR		0x10
+
+#define ATE_PFNSHIFT		12
+#define ATE_TIDSHIFT		8
+#define ATE_RMFSHIFT		48
 
-typedef u64	bridge_ate_t;
+#define mkate(xaddr, xid, attr) (((xaddr) & 0x0000fffffffff000ULL) | \
+				 ((xid)<<ATE_TIDSHIFT) | \
+				 (attr))
 
-/* pointers to bridge ATEs
- * are always "pointer to volatile"
- */
-typedef volatile bridge_ate_t  *bridge_ate_p;
+#define BRIDGE_INTERNAL_ATES	128
 
 /*
  * It is generally preferred that hardware registers on the bridge
@@ -65,7 +68,7 @@ typedef volatile bridge_ate_t  *bridge_ate_p;
  * Generated from Bridge spec dated 04oct95
  */
 
-typedef volatile struct bridge_s {
+struct bridge_regs {
 	/* Local Registers			       0x000000-0x00FFFF */
 
 	/* standard widget configuration	       0x000000-0x000057 */
@@ -86,105 +89,105 @@ typedef volatile struct bridge_s {
 #define b_wid_tflush			b_widget.w_tflush
 
 	/* bridge-specific widget configuration 0x000058-0x00007F */
-	bridgereg_t	    _pad_000058;
-	bridgereg_t	    b_wid_aux_err;		/* 0x00005C */
-	bridgereg_t	    _pad_000060;
-	bridgereg_t	    b_wid_resp_upper;		/* 0x000064 */
-	bridgereg_t	    _pad_000068;
-	bridgereg_t	    b_wid_resp_lower;		/* 0x00006C */
-	bridgereg_t	    _pad_000070;
-	bridgereg_t	    b_wid_tst_pin_ctrl;		/* 0x000074 */
-	bridgereg_t	_pad_000078[2];
+	u32	_pad_000058;
+	u32	b_wid_aux_err;		/* 0x00005C */
+	u32	_pad_000060;
+	u32	b_wid_resp_upper;		/* 0x000064 */
+	u32	_pad_000068;
+	u32	b_wid_resp_lower;		/* 0x00006C */
+	u32	_pad_000070;
+	u32	 b_wid_tst_pin_ctrl;		/* 0x000074 */
+	u32	_pad_000078[2];
 
 	/* PMU & Map 0x000080-0x00008F */
-	bridgereg_t	_pad_000080;
-	bridgereg_t	b_dir_map;			/* 0x000084 */
-	bridgereg_t	_pad_000088[2];
+	u32	_pad_000080;
+	u32	b_dir_map;			/* 0x000084 */
+	u32	_pad_000088[2];
 
 	/* SSRAM 0x000090-0x00009F */
-	bridgereg_t	_pad_000090;
-	bridgereg_t	b_ram_perr;			/* 0x000094 */
-	bridgereg_t	_pad_000098[2];
+	u32	_pad_000090;
+	u32	b_ram_perr;			/* 0x000094 */
+	u32	_pad_000098[2];
 
 	/* Arbitration 0x0000A0-0x0000AF */
-	bridgereg_t	_pad_0000A0;
-	bridgereg_t	b_arb;				/* 0x0000A4 */
-	bridgereg_t	_pad_0000A8[2];
+	u32	_pad_0000A0;
+	u32	b_arb;				/* 0x0000A4 */
+	u32	_pad_0000A8[2];
 
 	/* Number In A Can 0x0000B0-0x0000BF */
-	bridgereg_t	_pad_0000B0;
-	bridgereg_t	b_nic;				/* 0x0000B4 */
-	bridgereg_t	_pad_0000B8[2];
+	u32	_pad_0000B0;
+	u32	b_nic;				/* 0x0000B4 */
+	u32	_pad_0000B8[2];
 
 	/* PCI/GIO 0x0000C0-0x0000FF */
-	bridgereg_t	_pad_0000C0;
-	bridgereg_t	b_bus_timeout;			/* 0x0000C4 */
+	u32	_pad_0000C0;
+	u32	b_bus_timeout;			/* 0x0000C4 */
 #define b_pci_bus_timeout b_bus_timeout
 
-	bridgereg_t	_pad_0000C8;
-	bridgereg_t	b_pci_cfg;			/* 0x0000CC */
-	bridgereg_t	_pad_0000D0;
-	bridgereg_t	b_pci_err_upper;		/* 0x0000D4 */
-	bridgereg_t	_pad_0000D8;
-	bridgereg_t	b_pci_err_lower;		/* 0x0000DC */
-	bridgereg_t	_pad_0000E0[8];
+	u32	_pad_0000C8;
+	u32	b_pci_cfg;			/* 0x0000CC */
+	u32	_pad_0000D0;
+	u32	b_pci_err_upper;		/* 0x0000D4 */
+	u32	_pad_0000D8;
+	u32	b_pci_err_lower;		/* 0x0000DC */
+	u32	_pad_0000E0[8];
 #define b_gio_err_lower b_pci_err_lower
 #define b_gio_err_upper b_pci_err_upper
 
 	/* Interrupt 0x000100-0x0001FF */
-	bridgereg_t	_pad_000100;
-	bridgereg_t	b_int_status;			/* 0x000104 */
-	bridgereg_t	_pad_000108;
-	bridgereg_t	b_int_enable;			/* 0x00010C */
-	bridgereg_t	_pad_000110;
-	bridgereg_t	b_int_rst_stat;			/* 0x000114 */
-	bridgereg_t	_pad_000118;
-	bridgereg_t	b_int_mode;			/* 0x00011C */
-	bridgereg_t	_pad_000120;
-	bridgereg_t	b_int_device;			/* 0x000124 */
-	bridgereg_t	_pad_000128;
-	bridgereg_t	b_int_host_err;			/* 0x00012C */
+	u32	_pad_000100;
+	u32	b_int_status;			/* 0x000104 */
+	u32	_pad_000108;
+	u32	b_int_enable;			/* 0x00010C */
+	u32	_pad_000110;
+	u32	b_int_rst_stat;			/* 0x000114 */
+	u32	_pad_000118;
+	u32	b_int_mode;			/* 0x00011C */
+	u32	_pad_000120;
+	u32	b_int_device;			/* 0x000124 */
+	u32	_pad_000128;
+	u32	b_int_host_err;			/* 0x00012C */
 
 	struct {
-		bridgereg_t	__pad;			/* 0x0001{30,,,68} */
-		bridgereg_t	addr;			/* 0x0001{34,,,6C} */
+		u32	__pad;			/* 0x0001{30,,,68} */
+		u32	addr;			/* 0x0001{34,,,6C} */
 	} b_int_addr[8];				/* 0x000130 */
 
-	bridgereg_t	_pad_000170[36];
+	u32	_pad_000170[36];
 
 	/* Device 0x000200-0x0003FF */
 	struct {
-		bridgereg_t	__pad;			/* 0x0002{00,,,38} */
-		bridgereg_t	reg;			/* 0x0002{04,,,3C} */
+		u32	__pad;			/* 0x0002{00,,,38} */
+		u32	reg;			/* 0x0002{04,,,3C} */
 	} b_device[8];					/* 0x000200 */
 
 	struct {
-		bridgereg_t	__pad;			/* 0x0002{40,,,78} */
-		bridgereg_t	reg;			/* 0x0002{44,,,7C} */
+		u32	__pad;			/* 0x0002{40,,,78} */
+		u32	reg;			/* 0x0002{44,,,7C} */
 	} b_wr_req_buf[8];				/* 0x000240 */
 
 	struct {
-		bridgereg_t	__pad;			/* 0x0002{80,,,88} */
-		bridgereg_t	reg;			/* 0x0002{84,,,8C} */
+		u32	__pad;			/* 0x0002{80,,,88} */
+		u32	reg;			/* 0x0002{84,,,8C} */
 	} b_rrb_map[2];					/* 0x000280 */
 #define b_even_resp	b_rrb_map[0].reg		/* 0x000284 */
 #define b_odd_resp	b_rrb_map[1].reg		/* 0x00028C */
 
-	bridgereg_t	_pad_000290;
-	bridgereg_t	b_resp_status;			/* 0x000294 */
-	bridgereg_t	_pad_000298;
-	bridgereg_t	b_resp_clear;			/* 0x00029C */
+	u32	_pad_000290;
+	u32	b_resp_status;			/* 0x000294 */
+	u32	_pad_000298;
+	u32	b_resp_clear;			/* 0x00029C */
 
-	bridgereg_t	_pad_0002A0[24];
+	u32	_pad_0002A0[24];
 
 	char		_pad_000300[0x10000 - 0x000300];
 
 	/* Internal Address Translation Entry RAM 0x010000-0x0103FF */
 	union {
-		bridge_ate_t	wr;			/* write-only */
+		u64	wr;			/* write-only */
 		struct {
-			bridgereg_t	_p_pad;
-			bridgereg_t	rd;		/* read-only */
+			u32	_p_pad;
+			u32	rd;		/* read-only */
 		}			hi;
 	}			    b_int_ate_ram[128];
 
@@ -192,8 +195,8 @@ typedef volatile struct bridge_s {
 
 	/* Internal Address Translation Entry RAM LOW 0x011000-0x0113FF */
 	struct {
-		bridgereg_t	_p_pad;
-		bridgereg_t	rd;		/* read-only */
+		u32	_p_pad;
+		u32	rd;		/* read-only */
 	} b_int_ate_ram_lo[128];
 
 	char	_pad_011400[0x20000 - 0x011400];
@@ -212,7 +215,7 @@ typedef volatile struct bridge_s {
 		} f[8];
 	} b_type0_cfg_dev[8];					/* 0x020000 */
 
-    /* PCI Type 1 Configuration Space 0x028000-0x028FFF */
+	/* PCI Type 1 Configuration Space 0x028000-0x028FFF */
 	union {				/* make all access sizes available. */
 		u8	c[0x1000 / 1];
 		u16	s[0x1000 / 2];
@@ -233,7 +236,7 @@ typedef volatile struct bridge_s {
 	u8	_pad_030007[0x04fff8];			/* 0x030008-0x07FFFF */
 
 	/* External Address Translation Entry RAM 0x080000-0x0FFFFF */
-	bridge_ate_t	b_ext_ate_ram[0x10000];
+	u64	b_ext_ate_ram[0x10000];
 
 	/* Reserved 0x100000-0x1FFFFF */
 	char	_pad_100000[0x200000-0x100000];
@@ -259,13 +262,13 @@ typedef volatile struct bridge_s {
 		u32	l[0x400000 / 4];	/* read-only */
 		u64	d[0x400000 / 8];	/* read-only */
 	} b_external_flash;			/* 0xC00000 */
-} bridge_t;
+};
 
 /*
  * Field formats for Error Command Word and Auxiliary Error Command Word
  * of bridge.
  */
-typedef struct bridge_err_cmdword_s {
+struct bridge_err_cmdword {
 	union {
 		u32		cmd_word;
 		struct {
@@ -282,7 +285,7 @@ typedef struct bridge_err_cmdword_s {
 				rsvd:8;
 		} berr_st;
 	} berr_un;
-} bridge_err_cmdword_t;
+};
 
 #define berr_field	berr_un.berr_st
 #endif /* !__ASSEMBLY__ */
@@ -290,7 +293,7 @@ typedef struct bridge_err_cmdword_s {
 /*
  * The values of these macros can and should be crosschecked
  * regularly against the offsets of the like-named fields
- * within the "bridge_t" structure above.
+ * within the bridge_regs structure above.
  */
 
 /* Byte offset macros for Bridge internal registers */
@@ -797,49 +800,14 @@ typedef struct bridge_err_cmdword_s {
 #define PCI64_ATTR_RMF_MASK	0x00ff000000000000
 #define PCI64_ATTR_RMF_SHFT	48
 
-#ifndef __ASSEMBLY__
-/* Address translation entry for mapped pci32 accesses */
-typedef union ate_u {
-	u64	ent;
-	struct ate_s {
-		u64	rmf:16;
-		u64	addr:36;
-		u64	targ:4;
-		u64	reserved:3;
-		u64	barrier:1;
-		u64	prefetch:1;
-		u64	precise:1;
-		u64	coherent:1;
-		u64	valid:1;
-	} field;
-} ate_t;
-#endif /* !__ASSEMBLY__ */
-
-#define ATE_V		0x01
-#define ATE_CO		0x02
-#define ATE_PREC	0x04
-#define ATE_PREF	0x08
-#define ATE_BAR		0x10
-
-#define ATE_PFNSHIFT		12
-#define ATE_TIDSHIFT		8
-#define ATE_RMFSHIFT		48
-
-#define mkate(xaddr, xid, attr) ((xaddr) & 0x0000fffffffff000ULL) | \
-				((xid)<<ATE_TIDSHIFT) | \
-				(attr)
-
-#define BRIDGE_INTERNAL_ATES	128
-
 struct bridge_controller {
 	struct pci_controller	pc;
 	struct resource		mem;
 	struct resource		io;
 	struct resource		busn;
-	bridge_t		*base;
+	struct bridge_regs	*base;
 	nasid_t			nasid;
 	unsigned int		widget_id;
-	unsigned int		irq_cpu;
 	u64			baddr;
 	unsigned int		pci_int[8];
 };
@@ -847,8 +815,14 @@ struct bridge_controller {
 #define BRIDGE_CONTROLLER(bus) \
 	((struct bridge_controller *)((bus)->sysdata))
 
-extern void register_bridge_irq(unsigned int irq);
-extern int request_bridge_irq(struct bridge_controller *bc);
+#define bridge_read(bc, reg)		__raw_readl(&bc->base->reg)
+#define bridge_write(bc, reg, val)	__raw_writel(val, &bc->base->reg)
+#define bridge_set(bc, reg, val)	\
+	__raw_writel(__raw_readl(&bc->base->reg) | (val), &bc->base->reg)
+#define bridge_clr(bc, reg, val)	\
+	__raw_writel(__raw_readl(&bc->base->reg) & ~(val), &bc->base->reg)
+
+extern int request_bridge_irq(struct bridge_controller *bc, int pin);
 
 extern struct pci_ops bridge_pci_ops;
 
diff --git a/arch/mips/include/asm/pgtable.h b/arch/mips/include/asm/pgtable.h
index 910851c62db3..4ccb465ef3f2 100644
--- a/arch/mips/include/asm/pgtable.h
+++ b/arch/mips/include/asm/pgtable.h
@@ -17,6 +17,7 @@
 #include <asm/pgtable-64.h>
 #endif
 
+#include <asm/cmpxchg.h>
 #include <asm/io.h>
 #include <asm/pgtable-bits.h>
 
@@ -204,51 +205,11 @@ static inline void set_pte(pte_t *ptep, pte_t pteval)
 		 * Make sure the buddy is global too (if it's !none,
 		 * it better already be global)
 		 */
-#ifdef CONFIG_SMP
-		/*
-		 * For SMP, multiple CPUs can race, so we need to do
-		 * this atomically.
-		 */
-		unsigned long page_global = _PAGE_GLOBAL;
-		unsigned long tmp;
-
-		if (kernel_uses_llsc && R10000_LLSC_WAR) {
-			__asm__ __volatile__ (
-			"	.set	push				\n"
-			"	.set	arch=r4000			\n"
-			"	.set	noreorder			\n"
-			"1:"	__LL	"%[tmp], %[buddy]		\n"
-			"	bnez	%[tmp], 2f			\n"
-			"	 or	%[tmp], %[tmp], %[global]	\n"
-				__SC	"%[tmp], %[buddy]		\n"
-			"	beqzl	%[tmp], 1b			\n"
-			"	nop					\n"
-			"2:						\n"
-			"	.set	pop				\n"
-			: [buddy] "+m" (buddy->pte), [tmp] "=&r" (tmp)
-			: [global] "r" (page_global));
-		} else if (kernel_uses_llsc) {
-			loongson_llsc_mb();
-			__asm__ __volatile__ (
-			"	.set	push				\n"
-			"	.set	"MIPS_ISA_ARCH_LEVEL"		\n"
-			"	.set	noreorder			\n"
-			"1:"	__LL	"%[tmp], %[buddy]		\n"
-			"	bnez	%[tmp], 2f			\n"
-			"	 or	%[tmp], %[tmp], %[global]	\n"
-				__SC	"%[tmp], %[buddy]		\n"
-			"	beqz	%[tmp], 1b			\n"
-			"	nop					\n"
-			"2:						\n"
-			"	.set	pop				\n"
-			: [buddy] "+m" (buddy->pte), [tmp] "=&r" (tmp)
-			: [global] "r" (page_global));
-			loongson_llsc_mb();
-		}
-#else /* !CONFIG_SMP */
-		if (pte_none(*buddy))
-			pte_val(*buddy) = pte_val(*buddy) | _PAGE_GLOBAL;
-#endif /* CONFIG_SMP */
+# if defined(CONFIG_PHYS_ADDR_T_64BIT) && !defined(CONFIG_CPU_MIPS32)
+		cmpxchg64(&buddy->pte, 0, _PAGE_GLOBAL);
+# else
+		cmpxchg(&buddy->pte, 0, _PAGE_GLOBAL);
+# endif
 	}
 #endif
 }
diff --git a/arch/mips/include/asm/smp-ops.h b/arch/mips/include/asm/smp-ops.h
index b7123f9c0785..65618ff1280c 100644
--- a/arch/mips/include/asm/smp-ops.h
+++ b/arch/mips/include/asm/smp-ops.h
@@ -29,6 +29,7 @@ struct plat_smp_ops {
 	int (*boot_secondary)(int cpu, struct task_struct *idle);
 	void (*smp_setup)(void);
 	void (*prepare_cpus)(unsigned int max_cpus);
+	void (*prepare_boot_cpu)(void);
 #ifdef CONFIG_HOTPLUG_CPU
 	int (*cpu_disable)(void);
 	void (*cpu_die)(unsigned int cpu);
diff --git a/arch/mips/include/asm/sn/addrs.h b/arch/mips/include/asm/sn/addrs.h
index 66814f8ba8e8..837d23e24976 100644
--- a/arch/mips/include/asm/sn/addrs.h
+++ b/arch/mips/include/asm/sn/addrs.h
@@ -27,16 +27,11 @@
 
 #ifndef __ASSEMBLY__
 
-#define PS_UINT_CAST		(unsigned long)
 #define UINT64_CAST		(unsigned long)
 
-#define HUBREG_CAST		(volatile hubreg_t *)
-
 #else /* __ASSEMBLY__ */
 
-#define PS_UINT_CAST
 #define UINT64_CAST
-#define HUBREG_CAST
 
 #endif /* __ASSEMBLY__ */
 
@@ -256,42 +251,23 @@
  *	Otherwise, the recommended approach is to use *_HUB_L() and *_HUB_S().
  *	They're always safe.
  */
-#define LOCAL_HUB_ADDR(_x)	(HUBREG_CAST (IALIAS_BASE + (_x)))
-#define REMOTE_HUB_ADDR(_n, _x) (HUBREG_CAST (NODE_SWIN_BASE(_n, 1) +	\
-					      0x800000 + (_x)))
-#ifdef CONFIG_SGI_IP27
-#define REMOTE_HUB_PI_ADDR(_n, _sn, _x) (HUBREG_CAST (NODE_SWIN_BASE(_n, 1) +	\
-					      0x800000 + (_x)))
-#endif /* CONFIG_SGI_IP27 */
+#define LOCAL_HUB_ADDR(_x)	(IALIAS_BASE + (_x))
+#define REMOTE_HUB_ADDR(_n, _x) ((NODE_SWIN_BASE(_n, 1) + 0x800000 + (_x)))
 
 #ifndef __ASSEMBLY__
 
-#define HUB_L(_a)			*(_a)
-#define HUB_S(_a, _d)			*(_a) = (_d)
+#define LOCAL_HUB_PTR(_x)	((u64 *)LOCAL_HUB_ADDR((_x)))
+#define REMOTE_HUB_PTR(_n, _x)	((u64 *)REMOTE_HUB_ADDR((_n), (_x)))
 
-#define LOCAL_HUB_L(_r)			HUB_L(LOCAL_HUB_ADDR(_r))
-#define LOCAL_HUB_S(_r, _d)		HUB_S(LOCAL_HUB_ADDR(_r), (_d))
-#define REMOTE_HUB_L(_n, _r)		HUB_L(REMOTE_HUB_ADDR((_n), (_r)))
-#define REMOTE_HUB_S(_n, _r, _d)	HUB_S(REMOTE_HUB_ADDR((_n), (_r)), (_d))
-#define REMOTE_HUB_PI_L(_n, _sn, _r)	HUB_L(REMOTE_HUB_PI_ADDR((_n), (_sn), (_r)))
-#define REMOTE_HUB_PI_S(_n, _sn, _r, _d) HUB_S(REMOTE_HUB_PI_ADDR((_n), (_sn), (_r)), (_d))
+#define LOCAL_HUB_L(_r)			__raw_readq(LOCAL_HUB_PTR(_r))
+#define LOCAL_HUB_S(_r, _d)		__raw_writeq((_d), LOCAL_HUB_PTR(_r))
+#define REMOTE_HUB_L(_n, _r)		__raw_readq(REMOTE_HUB_PTR((_n), (_r)))
+#define REMOTE_HUB_S(_n, _r, _d)	__raw_writeq((_d),		\
+						REMOTE_HUB_PTR((_n), (_r)))
 
 #endif /* !__ASSEMBLY__ */
 
 /*
- * The following macros are used to get to a hub/bridge register, given
- * the base of the register space.
- */
-#define HUB_REG_PTR(_base, _off)	\
-	(HUBREG_CAST((__psunsigned_t)(_base) + (__psunsigned_t)(_off)))
-
-#define HUB_REG_PTR_L(_base, _off)	\
-	HUB_L(HUB_REG_PTR((_base), (_off)))
-
-#define HUB_REG_PTR_S(_base, _off, _data)	\
-	HUB_S(HUB_REG_PTR((_base), (_off)), (_data))
-
-/*
  * Software structure locations -- permanently fixed
  *    See diagram in kldir.h
  */
@@ -387,44 +363,14 @@
 
 #define SYMMON_STK_END(nasid)	(SYMMON_STK_ADDR(nasid, 0) + KLD_SYMMON_STK(nasid)->size)
 
-/* loading symmon 4k below UNIX. the arcs loader needs the topaddr for a
- * relocatable program
- */
-#define UNIX_DEBUG_LOADADDR	0x300000
-#define SYMMON_LOADADDR(nasid)						\
-	TO_NODE(nasid, PHYS_TO_K0(UNIX_DEBUG_LOADADDR - 0x1000))
-
-#define FREEMEM_OFFSET(nasid)	KLD_FREEMEM(nasid)->offset
-#define FREEMEM_ADDR(nasid)	SYMMON_STK_END(nasid)
-/*
- * XXX
- * Fix this. FREEMEM_ADDR should be aware of if symmon is loaded.
- * Also, it should take into account what prom thinks to be a safe
- * address
-	PHYS_TO_K0(NODE_OFFSET(nasid) + FREEMEM_OFFSET(nasid))
- */
-#define FREEMEM_SIZE(nasid)	KLD_FREEMEM(nasid)->size
-
-#define PI_ERROR_OFFSET(nasid)	KLD_PI_ERROR(nasid)->offset
-#define PI_ERROR_ADDR(nasid)						\
-	TO_NODE_UNCAC((nasid), PI_ERROR_OFFSET(nasid))
-#define PI_ERROR_SIZE(nasid)	KLD_PI_ERROR(nasid)->size
-
 #define NODE_OFFSET_TO_K0(_nasid, _off)					\
 	PHYS_TO_K0((NODE_OFFSET(_nasid) + (_off)) | CAC_BASE)
 #define NODE_OFFSET_TO_K1(_nasid, _off)					\
 	TO_UNCAC((NODE_OFFSET(_nasid) + (_off)) | UNCAC_BASE)
-#define K0_TO_NODE_OFFSET(_k0addr)					\
-	((__psunsigned_t)(_k0addr) & NODE_ADDRSPACE_MASK)
 
 #define KERN_VARS_ADDR(nasid)	KLD_KERN_VARS(nasid)->pointer
 #define KERN_VARS_SIZE(nasid)	KLD_KERN_VARS(nasid)->size
 
-#define KERN_XP_ADDR(nasid)	KLD_KERN_XP(nasid)->pointer
-#define KERN_XP_SIZE(nasid)	KLD_KERN_XP(nasid)->size
-
-#define GPDA_ADDR(nasid)	TO_NODE_CAC(nasid, GPDA_OFFSET)
-
 #endif /* !__ASSEMBLY__ */
 
 
diff --git a/arch/mips/include/asm/sn/arch.h b/arch/mips/include/asm/sn/arch.h
index 471e6870d876..3f1fb1454749 100644
--- a/arch/mips/include/asm/sn/arch.h
+++ b/arch/mips/include/asm/sn/arch.h
@@ -17,8 +17,6 @@
 #include <asm/sn/sn0/arch.h>
 #endif
 
-typedef u64	hubreg_t;
-
 #define cputonasid(cpu)		(sn_cpu_info[(cpu)].p_nasid)
 #define cputoslice(cpu)		(sn_cpu_info[(cpu)].p_slice)
 #define makespnum(_nasid, _slice)					\
diff --git a/arch/mips/include/asm/sn/io.h b/arch/mips/include/asm/sn/io.h
index d5174d04538c..211f1e83b523 100644
--- a/arch/mips/include/asm/sn/io.h
+++ b/arch/mips/include/asm/sn/io.h
@@ -44,7 +44,7 @@
 	IIO_ITTE_PUT((nasid), HUB_PIO_MAP_TO_MEM, \
 		     (bigwin), IIO_ITTE_INVALID_WIDGET, 0)
 
-#define IIO_ITTE_GET(nasid, bigwin) REMOTE_HUB_ADDR((nasid), IIO_ITTE(bigwin))
+#define IIO_ITTE_GET(nasid, bigwin) REMOTE_HUB_PTR((nasid), IIO_ITTE(bigwin))
 
 /*
  * Macro which takes the widget number, and returns the
diff --git a/arch/mips/include/asm/sn/sn0/addrs.h b/arch/mips/include/asm/sn/sn0/addrs.h
index 6b53070f400f..f13df84edfdd 100644
--- a/arch/mips/include/asm/sn/sn0/addrs.h
+++ b/arch/mips/include/asm/sn/sn0/addrs.h
@@ -134,11 +134,6 @@
 
 #define CALIAS_BASE		CAC_BASE
 
-
-
-#define BRIDGE_REG_PTR(_base, _off)	((volatile bridgereg_t *) \
-	((__psunsigned_t)(_base) + (__psunsigned_t)(_off)))
-
 #define SN0_WIDGET_BASE(_nasid, _wid)	(NODE_SWIN_BASE((_nasid), (_wid)))
 
 /* Turn on sable logging for the processors whose bits are set. */
diff --git a/arch/mips/include/asm/tlbflush.h b/arch/mips/include/asm/tlbflush.h
index 40a361092491..9789e7a32def 100644
--- a/arch/mips/include/asm/tlbflush.h
+++ b/arch/mips/include/asm/tlbflush.h
@@ -14,7 +14,6 @@
  *  - flush_tlb_kernel_range(start, end) flushes a range of kernel pages
  */
 extern void local_flush_tlb_all(void);
-extern void local_flush_tlb_mm(struct mm_struct *mm);
 extern void local_flush_tlb_range(struct vm_area_struct *vma,
 	unsigned long start, unsigned long end);
 extern void local_flush_tlb_kernel_range(unsigned long start,
@@ -23,6 +22,8 @@ extern void local_flush_tlb_page(struct vm_area_struct *vma,
 	unsigned long page);
 extern void local_flush_tlb_one(unsigned long vaddr);
 
+#include <asm/mmu_context.h>
+
 #ifdef CONFIG_SMP
 
 extern void flush_tlb_all(void);
@@ -36,7 +37,7 @@ extern void flush_tlb_one(unsigned long vaddr);
 #else /* CONFIG_SMP */
 
 #define flush_tlb_all()			local_flush_tlb_all()
-#define flush_tlb_mm(mm)		local_flush_tlb_mm(mm)
+#define flush_tlb_mm(mm)		drop_mmu_context(mm)
 #define flush_tlb_range(vma, vmaddr, end)	local_flush_tlb_range(vma, vmaddr, end)
 #define flush_tlb_kernel_range(vmaddr,end) \
 	local_flush_tlb_kernel_range(vmaddr, end)
diff --git a/arch/mips/jz4740/setup.c b/arch/mips/jz4740/setup.c
index afb40f8bce96..7e63c54eb8d2 100644
--- a/arch/mips/jz4740/setup.c
+++ b/arch/mips/jz4740/setup.c
@@ -31,7 +31,6 @@
 
 #define JZ4740_EMC_SDRAM_CTRL 0x80
 
-
 static void __init jz4740_detect_mem(void)
 {
 	void __iomem *jz_emc_base;
@@ -66,15 +65,22 @@ static unsigned long __init get_board_mach_type(const void *fdt)
 void __init plat_mem_setup(void)
 {
 	int offset;
+	void *dtb;
 
 	jz4740_reset_init();
-	__dt_setup_arch(__dtb_start);
 
-	offset = fdt_path_offset(__dtb_start, "/memory");
+	if (__dtb_start != __dtb_end)
+		dtb = __dtb_start;
+	else
+		dtb = (void *)fw_passed_dtb;
+
+	__dt_setup_arch(dtb);
+
+	offset = fdt_path_offset(dtb, "/memory");
 	if (offset < 0)
 		jz4740_detect_mem();
 
-	mips_machtype = get_board_mach_type(__dtb_start);
+	mips_machtype = get_board_mach_type(dtb);
 }
 
 void __init device_tree_init(void)
diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c
index 95b18a194f53..d5e335e6846a 100644
--- a/arch/mips/kernel/cpu-probe.c
+++ b/arch/mips/kernel/cpu-probe.c
@@ -872,10 +872,19 @@ static inline unsigned int decode_config4(struct cpuinfo_mips *c)
 
 static inline unsigned int decode_config5(struct cpuinfo_mips *c)
 {
-	unsigned int config5;
+	unsigned int config5, max_mmid_width;
+	unsigned long asid_mask;
 
 	config5 = read_c0_config5();
 	config5 &= ~(MIPS_CONF5_UFR | MIPS_CONF5_UFE);
+
+	if (cpu_has_mips_r6) {
+		if (!__builtin_constant_p(cpu_has_mmid) || cpu_has_mmid)
+			config5 |= MIPS_CONF5_MI;
+		else
+			config5 &= ~MIPS_CONF5_MI;
+	}
+
 	write_c0_config5(config5);
 
 	if (config5 & MIPS_CONF5_EVA)
@@ -894,6 +903,50 @@ static inline unsigned int decode_config5(struct cpuinfo_mips *c)
 	if (config5 & MIPS_CONF5_CRCP)
 		elf_hwcap |= HWCAP_MIPS_CRC32;
 
+	if (cpu_has_mips_r6) {
+		/* Ensure the write to config5 above takes effect */
+		back_to_back_c0_hazard();
+
+		/* Check whether we successfully enabled MMID support */
+		config5 = read_c0_config5();
+		if (config5 & MIPS_CONF5_MI)
+			c->options |= MIPS_CPU_MMID;
+
+		/*
+		 * Warn if we've hardcoded cpu_has_mmid to a value unsuitable
+		 * for the CPU we're running on, or if CPUs in an SMP system
+		 * have inconsistent MMID support.
+		 */
+		WARN_ON(!!cpu_has_mmid != !!(config5 & MIPS_CONF5_MI));
+
+		if (cpu_has_mmid) {
+			write_c0_memorymapid(~0ul);
+			back_to_back_c0_hazard();
+			asid_mask = read_c0_memorymapid();
+
+			/*
+			 * We maintain a bitmap to track MMID allocation, and
+			 * need a sensible upper bound on the size of that
+			 * bitmap. The initial CPU with MMID support (I6500)
+			 * supports 16 bit MMIDs, which gives us an 8KiB
+			 * bitmap. The architecture recommends that hardware
+			 * support 32 bit MMIDs, which would give us a 512MiB
+			 * bitmap - that's too big in most cases.
+			 *
+			 * Cap MMID width at 16 bits for now & we can revisit
+			 * this if & when hardware supports anything wider.
+			 */
+			max_mmid_width = 16;
+			if (asid_mask > GENMASK(max_mmid_width - 1, 0)) {
+				pr_info("Capping MMID width at %d bits",
+					max_mmid_width);
+				asid_mask = GENMASK(max_mmid_width - 1, 0);
+			}
+
+			set_cpu_asid_mask(c, asid_mask);
+		}
+	}
+
 	return config5 & MIPS_CONF_M;
 }
 
diff --git a/arch/mips/kernel/irq.c b/arch/mips/kernel/irq.c
index ba150c755fcc..85b6c60f285d 100644
--- a/arch/mips/kernel/irq.c
+++ b/arch/mips/kernel/irq.c
@@ -52,6 +52,7 @@ asmlinkage void spurious_interrupt(void)
 void __init init_IRQ(void)
 {
 	int i;
+	unsigned int order = get_order(IRQ_STACK_SIZE);
 
 	for (i = 0; i < NR_IRQS; i++)
 		irq_set_noprobe(i);
@@ -62,8 +63,7 @@ void __init init_IRQ(void)
 	arch_init_irq();
 
 	for_each_possible_cpu(i) {
-		int irq_pages = IRQ_STACK_SIZE / PAGE_SIZE;
-		void *s = (void *)__get_free_pages(GFP_KERNEL, irq_pages);
+		void *s = (void *)__get_free_pages(GFP_KERNEL, order);
 
 		irq_stack[i] = s;
 		pr_debug("CPU%d IRQ stack at 0x%p - 0x%p\n", i,
diff --git a/arch/mips/kernel/mips-cm.c b/arch/mips/kernel/mips-cm.c
index 7f3f136572de..537e8d091874 100644
--- a/arch/mips/kernel/mips-cm.c
+++ b/arch/mips/kernel/mips-cm.c
@@ -382,8 +382,8 @@ void mips_cm_error_report(void)
 				 sc_bit ? "True" : "False",
 				 cm2_cmd[cmd_bits], sport_bits);
 		}
-			pr_err("CM_ERROR=%08llx %s <%s>\n", cm_error,
-			       cm2_causes[cause], buf);
+		pr_err("CM_ERROR=%08llx %s <%s>\n", cm_error,
+		       cm2_causes[cause], buf);
 		pr_err("CM_ADDR =%08llx\n", cm_addr);
 		pr_err("CM_OTHER=%08llx %s\n", cm_other, cm2_causes[ocause]);
 	} else { /* CM3 */
diff --git a/arch/mips/kernel/mips-r2-to-r6-emul.c b/arch/mips/kernel/mips-r2-to-r6-emul.c
index c50c89a978f1..b4d210bfcdae 100644
--- a/arch/mips/kernel/mips-r2-to-r6-emul.c
+++ b/arch/mips/kernel/mips-r2-to-r6-emul.c
@@ -2351,23 +2351,10 @@ DEFINE_SHOW_ATTRIBUTE(mipsr2_clear);
 
 static int __init mipsr2_init_debugfs(void)
 {
-	struct dentry		*mipsr2_emul;
-
-	if (!mips_debugfs_dir)
-		return -ENODEV;
-
-	mipsr2_emul = debugfs_create_file("r2_emul_stats", S_IRUGO,
-					  mips_debugfs_dir, NULL,
-					  &mipsr2_emul_fops);
-	if (!mipsr2_emul)
-		return -ENOMEM;
-
-	mipsr2_emul = debugfs_create_file("r2_emul_stats_clear", S_IRUGO,
-					  mips_debugfs_dir, NULL,
-					  &mipsr2_clear_fops);
-	if (!mipsr2_emul)
-		return -ENOMEM;
-
+	debugfs_create_file("r2_emul_stats", S_IRUGO, mips_debugfs_dir, NULL,
+			    &mipsr2_emul_fops);
+	debugfs_create_file("r2_emul_stats_clear", S_IRUGO, mips_debugfs_dir,
+			    NULL, &mipsr2_clear_fops);
 	return 0;
 }
 
diff --git a/arch/mips/kernel/segment.c b/arch/mips/kernel/segment.c
index 2703f218202e..0a9bd7b0983b 100644
--- a/arch/mips/kernel/segment.c
+++ b/arch/mips/kernel/segment.c
@@ -95,18 +95,9 @@ static const struct file_operations segments_fops = {
 
 static int __init segments_info(void)
 {
-	struct dentry *segments;
-
-	if (cpu_has_segments) {
-		if (!mips_debugfs_dir)
-			return -ENODEV;
-
-		segments = debugfs_create_file("segments", S_IRUGO,
-					       mips_debugfs_dir, NULL,
-					       &segments_fops);
-		if (!segments)
-			return -ENOMEM;
-	}
+	if (cpu_has_segments)
+		debugfs_create_file("segments", S_IRUGO, mips_debugfs_dir, NULL,
+				    &segments_fops);
 	return 0;
 }
 
diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c
index d2e5a5ad0e6f..5151532ad959 100644
--- a/arch/mips/kernel/setup.c
+++ b/arch/mips/kernel/setup.c
@@ -1011,12 +1011,7 @@ unsigned long fw_passed_dtb;
 struct dentry *mips_debugfs_dir;
 static int __init debugfs_mips(void)
 {
-	struct dentry *d;
-
-	d = debugfs_create_dir("mips", NULL);
-	if (!d)
-		return -ENOMEM;
-	mips_debugfs_dir = d;
+	mips_debugfs_dir = debugfs_create_dir("mips", NULL);
 	return 0;
 }
 arch_initcall(debugfs_mips);
diff --git a/arch/mips/kernel/smp.c b/arch/mips/kernel/smp.c
index d84b9066b465..bc4bb3c6bd00 100644
--- a/arch/mips/kernel/smp.c
+++ b/arch/mips/kernel/smp.c
@@ -39,6 +39,7 @@
 
 #include <linux/atomic.h>
 #include <asm/cpu.h>
+#include <asm/ginvt.h>
 #include <asm/processor.h>
 #include <asm/idle.h>
 #include <asm/r4k-timer.h>
@@ -443,6 +444,8 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
 /* preload SMP state for boot cpu */
 void smp_prepare_boot_cpu(void)
 {
+	if (mp_ops->prepare_boot_cpu)
+		mp_ops->prepare_boot_cpu();
 	set_cpu_possible(0, true);
 	set_cpu_online(0, true);
 }
@@ -482,12 +485,21 @@ static void flush_tlb_all_ipi(void *info)
 
 void flush_tlb_all(void)
 {
+	if (cpu_has_mmid) {
+		htw_stop();
+		ginvt_full();
+		sync_ginv();
+		instruction_hazard();
+		htw_start();
+		return;
+	}
+
 	on_each_cpu(flush_tlb_all_ipi, NULL, 1);
 }
 
 static void flush_tlb_mm_ipi(void *mm)
 {
-	local_flush_tlb_mm((struct mm_struct *)mm);
+	drop_mmu_context((struct mm_struct *)mm);
 }
 
 /*
@@ -530,17 +542,22 @@ void flush_tlb_mm(struct mm_struct *mm)
 {
 	preempt_disable();
 
-	if ((atomic_read(&mm->mm_users) != 1) || (current->mm != mm)) {
+	if (cpu_has_mmid) {
+		/*
+		 * No need to worry about other CPUs - the ginvt in
+		 * drop_mmu_context() will be globalized.
+		 */
+	} else if ((atomic_read(&mm->mm_users) != 1) || (current->mm != mm)) {
 		smp_on_other_tlbs(flush_tlb_mm_ipi, mm);
 	} else {
 		unsigned int cpu;
 
 		for_each_online_cpu(cpu) {
 			if (cpu != smp_processor_id() && cpu_context(cpu, mm))
-				cpu_context(cpu, mm) = 0;
+				set_cpu_context(cpu, mm, 0);
 		}
 	}
-	local_flush_tlb_mm(mm);
+	drop_mmu_context(mm);
 
 	preempt_enable();
 }
@@ -561,9 +578,26 @@ static void flush_tlb_range_ipi(void *info)
 void flush_tlb_range(struct vm_area_struct *vma, unsigned long start, unsigned long end)
 {
 	struct mm_struct *mm = vma->vm_mm;
+	unsigned long addr;
+	u32 old_mmid;
 
 	preempt_disable();
-	if ((atomic_read(&mm->mm_users) != 1) || (current->mm != mm)) {
+	if (cpu_has_mmid) {
+		htw_stop();
+		old_mmid = read_c0_memorymapid();
+		write_c0_memorymapid(cpu_asid(0, mm));
+		mtc0_tlbw_hazard();
+		addr = round_down(start, PAGE_SIZE * 2);
+		end = round_up(end, PAGE_SIZE * 2);
+		do {
+			ginvt_va_mmid(addr);
+			sync_ginv();
+			addr += PAGE_SIZE * 2;
+		} while (addr < end);
+		write_c0_memorymapid(old_mmid);
+		instruction_hazard();
+		htw_start();
+	} else if ((atomic_read(&mm->mm_users) != 1) || (current->mm != mm)) {
 		struct flush_tlb_data fd = {
 			.vma = vma,
 			.addr1 = start,
@@ -571,6 +605,7 @@ void flush_tlb_range(struct vm_area_struct *vma, unsigned long start, unsigned l
 		};
 
 		smp_on_other_tlbs(flush_tlb_range_ipi, &fd);
+		local_flush_tlb_range(vma, start, end);
 	} else {
 		unsigned int cpu;
 		int exec = vma->vm_flags & VM_EXEC;
@@ -583,10 +618,10 @@ void flush_tlb_range(struct vm_area_struct *vma, unsigned long start, unsigned l
 			 * mm has been completely unused by that CPU.
 			 */
 			if (cpu != smp_processor_id() && cpu_context(cpu, mm))
-				cpu_context(cpu, mm) = !exec;
+				set_cpu_context(cpu, mm, !exec);
 		}
+		local_flush_tlb_range(vma, start, end);
 	}
-	local_flush_tlb_range(vma, start, end);
 	preempt_enable();
 }
 
@@ -616,14 +651,28 @@ static void flush_tlb_page_ipi(void *info)
 
 void flush_tlb_page(struct vm_area_struct *vma, unsigned long page)
 {
+	u32 old_mmid;
+
 	preempt_disable();
-	if ((atomic_read(&vma->vm_mm->mm_users) != 1) || (current->mm != vma->vm_mm)) {
+	if (cpu_has_mmid) {
+		htw_stop();
+		old_mmid = read_c0_memorymapid();
+		write_c0_memorymapid(cpu_asid(0, vma->vm_mm));
+		mtc0_tlbw_hazard();
+		ginvt_va_mmid(page);
+		sync_ginv();
+		write_c0_memorymapid(old_mmid);
+		instruction_hazard();
+		htw_start();
+	} else if ((atomic_read(&vma->vm_mm->mm_users) != 1) ||
+		   (current->mm != vma->vm_mm)) {
 		struct flush_tlb_data fd = {
 			.vma = vma,
 			.addr1 = page,
 		};
 
 		smp_on_other_tlbs(flush_tlb_page_ipi, &fd);
+		local_flush_tlb_page(vma, page);
 	} else {
 		unsigned int cpu;
 
@@ -635,10 +684,10 @@ void flush_tlb_page(struct vm_area_struct *vma, unsigned long page)
 			 * by that CPU.
 			 */
 			if (cpu != smp_processor_id() && cpu_context(cpu, vma->vm_mm))
-				cpu_context(cpu, vma->vm_mm) = 1;
+				set_cpu_context(cpu, vma->vm_mm, 1);
 		}
+		local_flush_tlb_page(vma, page);
 	}
-	local_flush_tlb_page(vma, page);
 	preempt_enable();
 }
 
diff --git a/arch/mips/kernel/spinlock_test.c b/arch/mips/kernel/spinlock_test.c
index eaed550e79a2..ab4e3e1b138d 100644
--- a/arch/mips/kernel/spinlock_test.c
+++ b/arch/mips/kernel/spinlock_test.c
@@ -118,23 +118,10 @@ DEFINE_SIMPLE_ATTRIBUTE(fops_multi, multi_get, NULL, "%llu\n");
 
 static int __init spinlock_test(void)
 {
-	struct dentry *d;
-
-	if (!mips_debugfs_dir)
-		return -ENODEV;
-
-	d = debugfs_create_file("spin_single", S_IRUGO,
-				mips_debugfs_dir, NULL,
-				&fops_ss);
-	if (!d)
-		return -ENOMEM;
-
-	d = debugfs_create_file("spin_multi", S_IRUGO,
-				mips_debugfs_dir, NULL,
-				&fops_multi);
-	if (!d)
-		return -ENOMEM;
-
+	debugfs_create_file("spin_single", S_IRUGO, mips_debugfs_dir, NULL,
+			    &fops_ss);
+	debugfs_create_file("spin_multi", S_IRUGO, mips_debugfs_dir, NULL,
+			    &fops_multi);
 	return 0;
 }
 device_initcall(spinlock_test);
diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c
index cbab46004e99..42d411125690 100644
--- a/arch/mips/kernel/traps.c
+++ b/arch/mips/kernel/traps.c
@@ -2223,7 +2223,9 @@ void per_cpu_trap_init(bool is_boot_cpu)
 		cp0_fdc_irq = -1;
 	}
 
-	if (!cpu_data[cpu].asid_cache)
+	if (cpu_has_mmid)
+		cpu_data[cpu].asid_cache = 0;
+	else if (!cpu_data[cpu].asid_cache)
 		cpu_data[cpu].asid_cache = asid_first_version(cpu);
 
 	mmgrab(&init_mm);
diff --git a/arch/mips/kernel/unaligned.c b/arch/mips/kernel/unaligned.c
index 595ca9c85111..76e33f940971 100644
--- a/arch/mips/kernel/unaligned.c
+++ b/arch/mips/kernel/unaligned.c
@@ -89,6 +89,7 @@
 #include <asm/fpu.h>
 #include <asm/fpu_emulator.h>
 #include <asm/inst.h>
+#include <asm/mmu_context.h>
 #include <linux/uaccess.h>
 
 #define STR(x)	__STR(x)
@@ -2374,18 +2375,10 @@ sigbus:
 #ifdef CONFIG_DEBUG_FS
 static int __init debugfs_unaligned(void)
 {
-	struct dentry *d;
-
-	if (!mips_debugfs_dir)
-		return -ENODEV;
-	d = debugfs_create_u32("unaligned_instructions", S_IRUGO,
-			       mips_debugfs_dir, &unaligned_instructions);
-	if (!d)
-		return -ENOMEM;
-	d = debugfs_create_u32("unaligned_action", S_IRUGO | S_IWUSR,
-			       mips_debugfs_dir, &unaligned_action);
-	if (!d)
-		return -ENOMEM;
+	debugfs_create_u32("unaligned_instructions", S_IRUGO, mips_debugfs_dir,
+			   &unaligned_instructions);
+	debugfs_create_u32("unaligned_action", S_IRUGO | S_IWUSR,
+			   mips_debugfs_dir, &unaligned_action);
 	return 0;
 }
 arch_initcall(debugfs_unaligned);
diff --git a/arch/mips/kvm/emulate.c b/arch/mips/kvm/emulate.c
index ec9ed23bca7f..0074427b04fb 100644
--- a/arch/mips/kvm/emulate.c
+++ b/arch/mips/kvm/emulate.c
@@ -1016,10 +1016,10 @@ static void kvm_mips_change_entryhi(struct kvm_vcpu *vcpu,
 		 */
 		preempt_disable();
 		cpu = smp_processor_id();
-		get_new_mmu_context(kern_mm, cpu);
+		get_new_mmu_context(kern_mm);
 		for_each_possible_cpu(i)
 			if (i != cpu)
-				cpu_context(i, kern_mm) = 0;
+				set_cpu_context(i, kern_mm, 0);
 		preempt_enable();
 	}
 	kvm_write_c0_guest_entryhi(cop0, entryhi);
@@ -1090,8 +1090,8 @@ static void kvm_mips_invalidate_guest_tlb(struct kvm_vcpu *vcpu,
 		if (i == cpu)
 			continue;
 		if (user)
-			cpu_context(i, user_mm) = 0;
-		cpu_context(i, kern_mm) = 0;
+			set_cpu_context(i, user_mm, 0);
+		set_cpu_context(i, kern_mm, 0);
 	}
 
 	preempt_enable();
diff --git a/arch/mips/kvm/mips.c b/arch/mips/kvm/mips.c
index 3734cd58895e..6d0517ac18e5 100644
--- a/arch/mips/kvm/mips.c
+++ b/arch/mips/kvm/mips.c
@@ -1723,6 +1723,11 @@ static int __init kvm_mips_init(void)
 {
 	int ret;
 
+	if (cpu_has_mmid) {
+		pr_warn("KVM does not yet support MMIDs. KVM Disabled\n");
+		return -EOPNOTSUPP;
+	}
+
 	ret = kvm_mips_entry_setup();
 	if (ret)
 		return ret;
diff --git a/arch/mips/kvm/trap_emul.c b/arch/mips/kvm/trap_emul.c
index 6a0d7040d882..73daa6ad33af 100644
--- a/arch/mips/kvm/trap_emul.c
+++ b/arch/mips/kvm/trap_emul.c
@@ -1056,11 +1056,7 @@ static int kvm_trap_emul_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
 	 */
 	if (current->flags & PF_VCPU) {
 		mm = KVM_GUEST_KERNEL_MODE(vcpu) ? kern_mm : user_mm;
-		if ((cpu_context(cpu, mm) ^ asid_cache(cpu)) &
-		    asid_version_mask(cpu))
-			get_new_mmu_context(mm, cpu);
-		write_c0_entryhi(cpu_asid(cpu, mm));
-		TLBMISS_HANDLER_SETUP_PGD(mm->pgd);
+		check_switch_mmu_context(mm);
 		kvm_mips_suspend_mm(cpu);
 		ehb();
 	}
@@ -1074,11 +1070,7 @@ static int kvm_trap_emul_vcpu_put(struct kvm_vcpu *vcpu, int cpu)
 
 	if (current->flags & PF_VCPU) {
 		/* Restore normal Linux process memory map */
-		if (((cpu_context(cpu, current->mm) ^ asid_cache(cpu)) &
-		     asid_version_mask(cpu)))
-			get_new_mmu_context(current->mm, cpu);
-		write_c0_entryhi(cpu_asid(cpu, current->mm));
-		TLBMISS_HANDLER_SETUP_PGD(current->mm->pgd);
+		check_switch_mmu_context(current->mm);
 		kvm_mips_resume_mm(cpu);
 		ehb();
 	}
@@ -1106,14 +1098,14 @@ static void kvm_trap_emul_check_requests(struct kvm_vcpu *vcpu, int cpu,
 		kvm_mips_flush_gva_pt(kern_mm->pgd, KMF_GPA | KMF_KERN);
 		kvm_mips_flush_gva_pt(user_mm->pgd, KMF_GPA | KMF_USER);
 		for_each_possible_cpu(i) {
-			cpu_context(i, kern_mm) = 0;
-			cpu_context(i, user_mm) = 0;
+			set_cpu_context(i, kern_mm, 0);
+			set_cpu_context(i, user_mm, 0);
 		}
 
 		/* Generate new ASID for current mode */
 		if (reload_asid) {
 			mm = KVM_GUEST_KERNEL_MODE(vcpu) ? kern_mm : user_mm;
-			get_new_mmu_context(mm, cpu);
+			get_new_mmu_context(mm);
 			htw_stop();
 			write_c0_entryhi(cpu_asid(cpu, mm));
 			TLBMISS_HANDLER_SETUP_PGD(mm->pgd);
@@ -1219,7 +1211,7 @@ static void kvm_trap_emul_vcpu_reenter(struct kvm_run *run,
 		if (gasid != vcpu->arch.last_user_gasid) {
 			kvm_mips_flush_gva_pt(user_mm->pgd, KMF_USER);
 			for_each_possible_cpu(i)
-				cpu_context(i, user_mm) = 0;
+				set_cpu_context(i, user_mm, 0);
 			vcpu->arch.last_user_gasid = gasid;
 		}
 	}
@@ -1228,9 +1220,7 @@ static void kvm_trap_emul_vcpu_reenter(struct kvm_run *run,
 	 * Check if ASID is stale. This may happen due to a TLB flush request or
 	 * a lazy user MM invalidation.
 	 */
-	if ((cpu_context(cpu, mm) ^ asid_cache(cpu)) &
-	    asid_version_mask(cpu))
-		get_new_mmu_context(mm, cpu);
+	check_mmu_context(mm);
 }
 
 static int kvm_trap_emul_vcpu_run(struct kvm_run *run, struct kvm_vcpu *vcpu)
@@ -1266,11 +1256,7 @@ static int kvm_trap_emul_vcpu_run(struct kvm_run *run, struct kvm_vcpu *vcpu)
 	cpu = smp_processor_id();
 
 	/* Restore normal Linux process memory map */
-	if (((cpu_context(cpu, current->mm) ^ asid_cache(cpu)) &
-	     asid_version_mask(cpu)))
-		get_new_mmu_context(current->mm, cpu);
-	write_c0_entryhi(cpu_asid(cpu, current->mm));
-	TLBMISS_HANDLER_SETUP_PGD(current->mm->pgd);
+	check_switch_mmu_context(current->mm);
 	kvm_mips_resume_mm(cpu);
 
 	htw_start();
diff --git a/arch/mips/kvm/vz.c b/arch/mips/kvm/vz.c
index 74805035edc8..dde20887a70d 100644
--- a/arch/mips/kvm/vz.c
+++ b/arch/mips/kvm/vz.c
@@ -2454,10 +2454,10 @@ static void kvm_vz_vcpu_load_tlb(struct kvm_vcpu *vcpu, int cpu)
 		 * Root ASID dealiases guest GPA mappings in the root TLB.
 		 * Allocate new root ASID if needed.
 		 */
-		if (cpumask_test_and_clear_cpu(cpu, &kvm->arch.asid_flush_mask)
-		    || (cpu_context(cpu, gpa_mm) ^ asid_cache(cpu)) &
-						asid_version_mask(cpu))
-			get_new_mmu_context(gpa_mm, cpu);
+		if (cpumask_test_and_clear_cpu(cpu, &kvm->arch.asid_flush_mask))
+			get_new_mmu_context(gpa_mm);
+		else
+			check_mmu_context(gpa_mm);
 	}
 }
 
diff --git a/arch/mips/lantiq/Kconfig b/arch/mips/lantiq/Kconfig
index 188de95d6dbd..6c6802e482c9 100644
--- a/arch/mips/lantiq/Kconfig
+++ b/arch/mips/lantiq/Kconfig
@@ -52,8 +52,4 @@ config PCI_LANTIQ
 	bool "PCI Support"
 	depends on SOC_XWAY && PCI
 
-config XRX200_PHY_FW
-	bool "XRX200 PHY firmware loader"
-	depends on SOC_XWAY
-
 endif
diff --git a/arch/mips/lib/dump_tlb.c b/arch/mips/lib/dump_tlb.c
index 781ad96b78c4..83ed37298e66 100644
--- a/arch/mips/lib/dump_tlb.c
+++ b/arch/mips/lib/dump_tlb.c
@@ -10,6 +10,7 @@
 
 #include <asm/hazards.h>
 #include <asm/mipsregs.h>
+#include <asm/mmu_context.h>
 #include <asm/page.h>
 #include <asm/pgtable.h>
 #include <asm/tlbdebug.h>
@@ -73,12 +74,13 @@ static inline const char *msk2str(unsigned int mask)
 
 static void dump_tlb(int first, int last)
 {
-	unsigned long s_entryhi, entryhi, asid;
+	unsigned long s_entryhi, entryhi, asid, mmid;
 	unsigned long long entrylo0, entrylo1, pa;
 	unsigned int s_index, s_pagemask, s_guestctl1 = 0;
 	unsigned int pagemask, guestctl1 = 0, c0, c1, i;
 	unsigned long asidmask = cpu_asid_mask(&current_cpu_data);
 	int asidwidth = DIV_ROUND_UP(ilog2(asidmask) + 1, 4);
+	unsigned long uninitialized_var(s_mmid);
 #ifdef CONFIG_32BIT
 	bool xpa = cpu_has_xpa && (read_c0_pagegrain() & PG_ELPA);
 	int pwidth = xpa ? 11 : 8;
@@ -92,7 +94,12 @@ static void dump_tlb(int first, int last)
 	s_pagemask = read_c0_pagemask();
 	s_entryhi = read_c0_entryhi();
 	s_index = read_c0_index();
-	asid = s_entryhi & asidmask;
+
+	if (cpu_has_mmid)
+		asid = s_mmid = read_c0_memorymapid();
+	else
+		asid = s_entryhi & asidmask;
+
 	if (cpu_has_guestid)
 		s_guestctl1 = read_c0_guestctl1();
 
@@ -105,6 +112,12 @@ static void dump_tlb(int first, int last)
 		entryhi	 = read_c0_entryhi();
 		entrylo0 = read_c0_entrylo0();
 		entrylo1 = read_c0_entrylo1();
+
+		if (cpu_has_mmid)
+			mmid = read_c0_memorymapid();
+		else
+			mmid = entryhi & asidmask;
+
 		if (cpu_has_guestid)
 			guestctl1 = read_c0_guestctl1();
 
@@ -124,8 +137,7 @@ static void dump_tlb(int first, int last)
 		 * leave only a single G bit set after a machine check exception
 		 * due to duplicate TLB entry.
 		 */
-		if (!((entrylo0 | entrylo1) & ENTRYLO_G) &&
-		    (entryhi & asidmask) != asid)
+		if (!((entrylo0 | entrylo1) & ENTRYLO_G) && (mmid != asid))
 			continue;
 
 		/*
@@ -138,7 +150,7 @@ static void dump_tlb(int first, int last)
 
 		pr_cont("va=%0*lx asid=%0*lx",
 			vwidth, (entryhi & ~0x1fffUL),
-			asidwidth, entryhi & asidmask);
+			asidwidth, mmid);
 		if (cpu_has_guestid)
 			pr_cont(" gid=%02lx",
 				(guestctl1 & MIPS_GCTL1_RID)
diff --git a/arch/mips/loongson32/Kconfig b/arch/mips/loongson32/Kconfig
index 462b126f45aa..6dacc1438906 100644
--- a/arch/mips/loongson32/Kconfig
+++ b/arch/mips/loongson32/Kconfig
@@ -15,7 +15,6 @@ config LOONGSON1_LS1B
 	select SYS_SUPPORTS_32BIT_KERNEL
 	select SYS_SUPPORTS_LITTLE_ENDIAN
 	select SYS_SUPPORTS_HIGHMEM
-	select SYS_SUPPORTS_MIPS16
 	select SYS_HAS_EARLY_PRINTK
 	select USE_GENERIC_EARLY_PRINTK_8250
 	select COMMON_CLK
@@ -31,7 +30,6 @@ config LOONGSON1_LS1C
 	select SYS_SUPPORTS_32BIT_KERNEL
 	select SYS_SUPPORTS_LITTLE_ENDIAN
 	select SYS_SUPPORTS_HIGHMEM
-	select SYS_SUPPORTS_MIPS16
 	select SYS_HAS_EARLY_PRINTK
 	select USE_GENERIC_EARLY_PRINTK_8250
 	select COMMON_CLK
diff --git a/arch/mips/loongson32/Platform b/arch/mips/loongson32/Platform
index a0dbb3b2f2de..333215593092 100644
--- a/arch/mips/loongson32/Platform
+++ b/arch/mips/loongson32/Platform
@@ -1,4 +1,4 @@
-cflags-$(CONFIG_CPU_LOONGSON1)		+= -march=mips32 -Wa,--trap
+cflags-$(CONFIG_CPU_LOONGSON1)		+= -march=mips32r2 -Wa,--trap
 platform-$(CONFIG_MACH_LOONGSON32)	+= loongson32/
 cflags-$(CONFIG_MACH_LOONGSON32)	+= -I$(srctree)/arch/mips/include/asm/mach-loongson32
-load-$(CONFIG_CPU_LOONGSON1)		+= 0xffffffff80100000
+load-$(CONFIG_CPU_LOONGSON1)		+= 0xffffffff80200000
diff --git a/arch/mips/loongson32/common/platform.c b/arch/mips/loongson32/common/platform.c
index ac584c5823d0..0bf355c8bcb2 100644
--- a/arch/mips/loongson32/common/platform.c
+++ b/arch/mips/loongson32/common/platform.c
@@ -81,42 +81,6 @@ struct platform_device ls1x_cpufreq_pdev = {
 	},
 };
 
-/* DMA */
-static struct resource ls1x_dma_resources[] = {
-	[0] = {
-		.start = LS1X_DMAC_BASE,
-		.end = LS1X_DMAC_BASE + SZ_4 - 1,
-		.flags = IORESOURCE_MEM,
-	},
-	[1] = {
-		.start = LS1X_DMA0_IRQ,
-		.end = LS1X_DMA0_IRQ,
-		.flags = IORESOURCE_IRQ,
-	},
-	[2] = {
-		.start = LS1X_DMA1_IRQ,
-		.end = LS1X_DMA1_IRQ,
-		.flags = IORESOURCE_IRQ,
-	},
-	[3] = {
-		.start = LS1X_DMA2_IRQ,
-		.end = LS1X_DMA2_IRQ,
-		.flags = IORESOURCE_IRQ,
-	},
-};
-
-struct platform_device ls1x_dma_pdev = {
-	.name		= "ls1x-dma",
-	.id		= -1,
-	.num_resources	= ARRAY_SIZE(ls1x_dma_resources),
-	.resource	= ls1x_dma_resources,
-};
-
-void __init ls1x_dma_set_platdata(struct plat_ls1x_dma *pdata)
-{
-	ls1x_dma_pdev.dev.platform_data = pdata;
-}
-
 /* Synopsys Ethernet GMAC */
 static struct stmmac_mdio_bus_data ls1x_mdio_bus_data = {
 	.phy_mask	= 0,
@@ -291,33 +255,6 @@ struct platform_device ls1x_gpio1_pdev = {
 	.resource	= ls1x_gpio1_resources,
 };
 
-/* NAND Flash */
-static struct resource ls1x_nand_resources[] = {
-	[0] = {
-		.start	= LS1X_NAND_BASE,
-		.end	= LS1X_NAND_BASE + SZ_32 - 1,
-		.flags	= IORESOURCE_MEM,
-	},
-	[1] = {
-		/* DMA channel 0 is dedicated to NAND */
-		.start	= LS1X_DMA_CHANNEL0,
-		.end	= LS1X_DMA_CHANNEL0,
-		.flags	= IORESOURCE_DMA,
-	},
-};
-
-struct platform_device ls1x_nand_pdev = {
-	.name		= "ls1x-nand",
-	.id		= -1,
-	.num_resources	= ARRAY_SIZE(ls1x_nand_resources),
-	.resource	= ls1x_nand_resources,
-};
-
-void __init ls1x_nand_set_platdata(struct plat_ls1x_nand *pdata)
-{
-	ls1x_nand_pdev.dev.platform_data = pdata;
-}
-
 /* USB EHCI */
 static u64 ls1x_ehci_dmamask = DMA_BIT_MASK(32);
 
diff --git a/arch/mips/loongson32/ls1b/board.c b/arch/mips/loongson32/ls1b/board.c
index 01aceaace314..447b15fc0a2b 100644
--- a/arch/mips/loongson32/ls1b/board.c
+++ b/arch/mips/loongson32/ls1b/board.c
@@ -16,30 +16,6 @@
 #include <nand.h>
 #include <platform.h>
 
-struct plat_ls1x_dma ls1x_dma_pdata = {
-	.nr_channels	= 3,
-};
-
-static struct mtd_partition ls1x_nand_parts[] = {
-	{
-		.name        = "kernel",
-		.offset      = 0,
-		.size        = SZ_16M,
-	},
-	{
-		.name        = "rootfs",
-		.offset      = MTDPART_OFS_APPEND,
-		.size        = MTDPART_SIZ_FULL,
-	},
-};
-
-struct plat_ls1x_nand ls1x_nand_pdata = {
-	.parts		= ls1x_nand_parts,
-	.nr_parts	= ARRAY_SIZE(ls1x_nand_parts),
-	.hold_cycle	= 0x2,
-	.wait_cycle	= 0xc,
-};
-
 static const struct gpio_led ls1x_gpio_leds[] __initconst = {
 	{
 		.name			= "LED9",
@@ -64,13 +40,11 @@ static const struct gpio_led_platform_data ls1x_led_pdata __initconst = {
 static struct platform_device *ls1b_platform_devices[] __initdata = {
 	&ls1x_uart_pdev,
 	&ls1x_cpufreq_pdev,
-	&ls1x_dma_pdev,
 	&ls1x_eth0_pdev,
 	&ls1x_eth1_pdev,
 	&ls1x_ehci_pdev,
 	&ls1x_gpio0_pdev,
 	&ls1x_gpio1_pdev,
-	&ls1x_nand_pdev,
 	&ls1x_rtc_pdev,
 	&ls1x_wdt_pdev,
 };
@@ -78,8 +52,6 @@ static struct platform_device *ls1b_platform_devices[] __initdata = {
 static int __init ls1b_platform_init(void)
 {
 	ls1x_serial_set_uartclk(&ls1x_uart_pdev);
-	ls1x_dma_set_platdata(&ls1x_dma_pdata);
-	ls1x_nand_set_platdata(&ls1x_nand_pdata);
 
 	gpio_led_register_device(-1, &ls1x_led_pdata);
 
diff --git a/arch/mips/math-emu/me-debugfs.c b/arch/mips/math-emu/me-debugfs.c
index 58798f527356..387724860fa6 100644
--- a/arch/mips/math-emu/me-debugfs.c
+++ b/arch/mips/math-emu/me-debugfs.c
@@ -189,32 +189,21 @@ static int __init debugfs_fpuemu(void)
 {
 	struct dentry *fpuemu_debugfs_base_dir;
 	struct dentry *fpuemu_debugfs_inst_dir;
-	struct dentry *d, *reset_file;
-
-	if (!mips_debugfs_dir)
-		return -ENODEV;
 
 	fpuemu_debugfs_base_dir = debugfs_create_dir("fpuemustats",
 						     mips_debugfs_dir);
-	if (!fpuemu_debugfs_base_dir)
-		return -ENOMEM;
 
-	reset_file = debugfs_create_file("fpuemustats_clear", 0444,
-					 mips_debugfs_dir, NULL,
-					 &fpuemustats_clear_fops);
-	if (!reset_file)
-		return -ENOMEM;
+	debugfs_create_file("fpuemustats_clear", 0444, mips_debugfs_dir, NULL,
+			    &fpuemustats_clear_fops);
 
 #define FPU_EMU_STAT_OFFSET(m)						\
 	offsetof(struct mips_fpu_emulator_stats, m)
 
 #define FPU_STAT_CREATE(m)						\
 do {									\
-	d = debugfs_create_file(#m, 0444, fpuemu_debugfs_base_dir,	\
+	debugfs_create_file(#m, 0444, fpuemu_debugfs_base_dir,		\
 				(void *)FPU_EMU_STAT_OFFSET(m),		\
 				&fops_fpuemu_stat);			\
-	if (!d)								\
-		return -ENOMEM;						\
 } while (0)
 
 	FPU_STAT_CREATE(emulated);
@@ -233,8 +222,6 @@ do {									\
 
 	fpuemu_debugfs_inst_dir = debugfs_create_dir("instructions",
 						     fpuemu_debugfs_base_dir);
-	if (!fpuemu_debugfs_inst_dir)
-		return -ENOMEM;
 
 #define FPU_STAT_CREATE_EX(m)						\
 do {									\
@@ -242,11 +229,9 @@ do {									\
 									\
 	adjust_instruction_counter_name(name, #m);			\
 									\
-	d = debugfs_create_file(name, 0444, fpuemu_debugfs_inst_dir,	\
+	debugfs_create_file(name, 0444, fpuemu_debugfs_inst_dir,	\
 				(void *)FPU_EMU_STAT_OFFSET(m),		\
 				&fops_fpuemu_stat);			\
-	if (!d)								\
-		return -ENOMEM;						\
 } while (0)
 
 	FPU_STAT_CREATE_EX(abs_s);
diff --git a/arch/mips/mm/Makefile b/arch/mips/mm/Makefile
index 3e5bb203c95a..f34d7ff5eb60 100644
--- a/arch/mips/mm/Makefile
+++ b/arch/mips/mm/Makefile
@@ -3,9 +3,19 @@
 # Makefile for the Linux/MIPS-specific parts of the memory manager.
 #
 
-obj-y				+= cache.o extable.o fault.o \
-				   gup.o init.o mmap.o page.o page-funcs.o \
-				   pgtable.o tlbex.o tlbex-fault.o tlb-funcs.o
+obj-y				+= cache.o
+obj-y				+= context.o
+obj-y				+= extable.o
+obj-y				+= fault.o
+obj-y				+= gup.o
+obj-y				+= init.o
+obj-y				+= mmap.o
+obj-y				+= page.o
+obj-y				+= page-funcs.o
+obj-y				+= pgtable.o
+obj-y				+= tlbex.o
+obj-y				+= tlbex-fault.o
+obj-y				+= tlb-funcs.o
 
 ifdef CONFIG_CPU_MICROMIPS
 obj-y				+= uasm-micromips.o
diff --git a/arch/mips/mm/c-octeon.c b/arch/mips/mm/c-octeon.c
index 0e45b061e514..8064821e9805 100644
--- a/arch/mips/mm/c-octeon.c
+++ b/arch/mips/mm/c-octeon.c
@@ -128,23 +128,6 @@ static void octeon_flush_icache_range(unsigned long start, unsigned long end)
 
 
 /**
- * Flush the icache for a trampoline. These are used for interrupt
- * and exception hooking.
- *
- * @addr:   Address to flush
- */
-static void octeon_flush_cache_sigtramp(unsigned long addr)
-{
-	struct vm_area_struct *vma;
-
-	down_read(&current->mm->mmap_sem);
-	vma = find_vma(current->mm, addr);
-	octeon_flush_icache_all_cores(vma);
-	up_read(&current->mm->mmap_sem);
-}
-
-
-/**
  * Flush a range out of a vma
  *
  * @vma:    VMA to flush
@@ -289,7 +272,6 @@ void octeon_cache_init(void)
 	flush_cache_mm			= octeon_flush_cache_mm;
 	flush_cache_page		= octeon_flush_cache_page;
 	flush_cache_range		= octeon_flush_cache_range;
-	flush_cache_sigtramp		= octeon_flush_cache_sigtramp;
 	flush_icache_all		= octeon_flush_icache_all;
 	flush_data_cache_page		= octeon_flush_data_cache_page;
 	flush_icache_range		= octeon_flush_icache_range;
diff --git a/arch/mips/mm/c-r3k.c b/arch/mips/mm/c-r3k.c
index 01848cdf2074..0ca401ddf3b7 100644
--- a/arch/mips/mm/c-r3k.c
+++ b/arch/mips/mm/c-r3k.c
@@ -274,30 +274,6 @@ static void r3k_flush_data_cache_page(unsigned long addr)
 {
 }
 
-static void r3k_flush_cache_sigtramp(unsigned long addr)
-{
-	unsigned long flags;
-
-	pr_debug("csigtramp[%08lx]\n", addr);
-
-	flags = read_c0_status();
-
-	write_c0_status(flags&~ST0_IEC);
-
-	/* Fill the TLB to avoid an exception with caches isolated. */
-	asm(	"lw\t$0, 0x000(%0)\n\t"
-		"lw\t$0, 0x004(%0)\n\t"
-		: : "r" (addr) );
-
-	write_c0_status((ST0_ISC|ST0_SWC|flags)&~ST0_IEC);
-
-	asm(	"sb\t$0, 0x000(%0)\n\t"
-		"sb\t$0, 0x004(%0)\n\t"
-		: : "r" (addr) );
-
-	write_c0_status(flags);
-}
-
 static void r3k_flush_kernel_vmap_range(unsigned long vaddr, int size)
 {
 	BUG();
@@ -331,7 +307,6 @@ void r3k_cache_init(void)
 
 	__flush_kernel_vmap_range = r3k_flush_kernel_vmap_range;
 
-	flush_cache_sigtramp = r3k_flush_cache_sigtramp;
 	local_flush_data_cache_page = local_r3k_flush_data_cache_page;
 	flush_data_cache_page = r3k_flush_data_cache_page;
 
diff --git a/arch/mips/mm/c-r4k.c b/arch/mips/mm/c-r4k.c
index d0b64df51eb2..5166e38cd1c6 100644
--- a/arch/mips/mm/c-r4k.c
+++ b/arch/mips/mm/c-r4k.c
@@ -540,6 +540,9 @@ static inline int has_valid_asid(const struct mm_struct *mm, unsigned int type)
 	unsigned int i;
 	const cpumask_t *mask = cpu_present_mask;
 
+	if (cpu_has_mmid)
+		return cpu_context(0, mm) != 0;
+
 	/* cpu_sibling_map[] undeclared when !CONFIG_SMP */
 #ifdef CONFIG_SMP
 	/*
@@ -697,10 +700,7 @@ static inline void local_r4k_flush_cache_page(void *args)
 	}
 	if (exec) {
 		if (vaddr && cpu_has_vtag_icache && mm == current->active_mm) {
-			int cpu = smp_processor_id();
-
-			if (cpu_context(cpu, mm) != 0)
-				drop_mmu_context(mm, cpu);
+			drop_mmu_context(mm);
 		} else
 			vaddr ? r4k_blast_icache_page(addr) :
 				r4k_blast_icache_user_page(addr);
@@ -937,119 +937,6 @@ static void r4k_dma_cache_inv(unsigned long addr, unsigned long size)
 }
 #endif /* CONFIG_DMA_NONCOHERENT */
 
-struct flush_cache_sigtramp_args {
-	struct mm_struct *mm;
-	struct page *page;
-	unsigned long addr;
-};
-
-/*
- * While we're protected against bad userland addresses we don't care
- * very much about what happens in that case.  Usually a segmentation
- * fault will dump the process later on anyway ...
- */
-static void local_r4k_flush_cache_sigtramp(void *args)
-{
-	struct flush_cache_sigtramp_args *fcs_args = args;
-	unsigned long addr = fcs_args->addr;
-	struct page *page = fcs_args->page;
-	struct mm_struct *mm = fcs_args->mm;
-	int map_coherent = 0;
-	void *vaddr;
-
-	unsigned long ic_lsize = cpu_icache_line_size();
-	unsigned long dc_lsize = cpu_dcache_line_size();
-	unsigned long sc_lsize = cpu_scache_line_size();
-
-	/*
-	 * If owns no valid ASID yet, cannot possibly have gotten
-	 * this page into the cache.
-	 */
-	if (!has_valid_asid(mm, R4K_HIT))
-		return;
-
-	if (mm == current->active_mm) {
-		vaddr = NULL;
-	} else {
-		/*
-		 * Use kmap_coherent or kmap_atomic to do flushes for
-		 * another ASID than the current one.
-		 */
-		map_coherent = (cpu_has_dc_aliases &&
-				page_mapcount(page) &&
-				!Page_dcache_dirty(page));
-		if (map_coherent)
-			vaddr = kmap_coherent(page, addr);
-		else
-			vaddr = kmap_atomic(page);
-		addr = (unsigned long)vaddr + (addr & ~PAGE_MASK);
-	}
-
-	R4600_HIT_CACHEOP_WAR_IMPL;
-	if (!cpu_has_ic_fills_f_dc) {
-		if (dc_lsize)
-			vaddr ? flush_dcache_line(addr & ~(dc_lsize - 1))
-			      : protected_writeback_dcache_line(
-							addr & ~(dc_lsize - 1));
-		if (!cpu_icache_snoops_remote_store && scache_size)
-			vaddr ? flush_scache_line(addr & ~(sc_lsize - 1))
-			      : protected_writeback_scache_line(
-							addr & ~(sc_lsize - 1));
-	}
-	if (ic_lsize)
-		vaddr ? flush_icache_line(addr & ~(ic_lsize - 1))
-		      : protected_flush_icache_line(addr & ~(ic_lsize - 1));
-
-	if (vaddr) {
-		if (map_coherent)
-			kunmap_coherent();
-		else
-			kunmap_atomic(vaddr);
-	}
-
-	if (MIPS4K_ICACHE_REFILL_WAR) {
-		__asm__ __volatile__ (
-			".set push\n\t"
-			".set noat\n\t"
-			".set "MIPS_ISA_LEVEL"\n\t"
-#ifdef CONFIG_32BIT
-			"la	$at,1f\n\t"
-#endif
-#ifdef CONFIG_64BIT
-			"dla	$at,1f\n\t"
-#endif
-			"cache	%0,($at)\n\t"
-			"nop; nop; nop\n"
-			"1:\n\t"
-			".set pop"
-			:
-			: "i" (Hit_Invalidate_I));
-	}
-	if (MIPS_CACHE_SYNC_WAR)
-		__asm__ __volatile__ ("sync");
-}
-
-static void r4k_flush_cache_sigtramp(unsigned long addr)
-{
-	struct flush_cache_sigtramp_args args;
-	int npages;
-
-	down_read(&current->mm->mmap_sem);
-
-	npages = get_user_pages_fast(addr, 1, 0, &args.page);
-	if (npages < 1)
-		goto out;
-
-	args.mm = current->mm;
-	args.addr = addr;
-
-	r4k_on_each_cpu(R4K_HIT, local_r4k_flush_cache_sigtramp, &args);
-
-	put_page(args.page);
-out:
-	up_read(&current->mm->mmap_sem);
-}
-
 static void r4k_flush_icache_all(void)
 {
 	if (cpu_has_vtag_icache)
@@ -1978,7 +1865,6 @@ void r4k_cache_init(void)
 
 	__flush_kernel_vmap_range = r4k_flush_kernel_vmap_range;
 
-	flush_cache_sigtramp	= r4k_flush_cache_sigtramp;
 	flush_icache_all	= r4k_flush_icache_all;
 	local_flush_data_cache_page	= local_r4k_flush_data_cache_page;
 	flush_data_cache_page	= r4k_flush_data_cache_page;
@@ -2033,7 +1919,6 @@ void r4k_cache_init(void)
 		/* I$ fills from D$ just by emptying the write buffers */
 		flush_cache_page = (void *)b5k_instruction_hazard;
 		flush_cache_range = (void *)b5k_instruction_hazard;
-		flush_cache_sigtramp = (void *)b5k_instruction_hazard;
 		local_flush_data_cache_page = (void *)b5k_instruction_hazard;
 		flush_data_cache_page = (void *)b5k_instruction_hazard;
 		flush_icache_range = (void *)b5k_instruction_hazard;
@@ -2052,7 +1937,6 @@ void r4k_cache_init(void)
 		flush_cache_mm		= (void *)cache_noop;
 		flush_cache_page	= (void *)cache_noop;
 		flush_cache_range	= (void *)cache_noop;
-		flush_cache_sigtramp	= (void *)cache_noop;
 		flush_icache_all	= (void *)cache_noop;
 		flush_data_cache_page	= (void *)cache_noop;
 		local_flush_data_cache_page	= (void *)cache_noop;
diff --git a/arch/mips/mm/c-tx39.c b/arch/mips/mm/c-tx39.c
index 5f6c099a9457..b7c8a9d79c35 100644
--- a/arch/mips/mm/c-tx39.c
+++ b/arch/mips/mm/c-tx39.c
@@ -290,25 +290,6 @@ static void tx39_dma_cache_inv(unsigned long addr, unsigned long size)
 	}
 }
 
-static void tx39_flush_cache_sigtramp(unsigned long addr)
-{
-	unsigned long ic_lsize = current_cpu_data.icache.linesz;
-	unsigned long dc_lsize = current_cpu_data.dcache.linesz;
-	unsigned long config;
-	unsigned long flags;
-
-	protected_writeback_dcache_line(addr & ~(dc_lsize - 1));
-
-	/* disable icache (set ICE#) */
-	local_irq_save(flags);
-	config = read_c0_conf();
-	write_c0_conf(config & ~TX39_CONF_ICE);
-	TX39_STOP_STREAMING();
-	protected_flush_icache_line(addr & ~(ic_lsize - 1));
-	write_c0_conf(config);
-	local_irq_restore(flags);
-}
-
 static __init void tx39_probe_cache(void)
 {
 	unsigned long config;
@@ -368,7 +349,6 @@ void tx39_cache_init(void)
 		flush_icache_range	= (void *) tx39h_flush_icache_all;
 		local_flush_icache_range = (void *) tx39h_flush_icache_all;
 
-		flush_cache_sigtramp	= (void *) tx39h_flush_icache_all;
 		local_flush_data_cache_page	= (void *) tx39h_flush_icache_all;
 		flush_data_cache_page	= (void *) tx39h_flush_icache_all;
 
@@ -397,7 +377,6 @@ void tx39_cache_init(void)
 
 		__flush_kernel_vmap_range = tx39_flush_kernel_vmap_range;
 
-		flush_cache_sigtramp = tx39_flush_cache_sigtramp;
 		local_flush_data_cache_page = local_tx39_flush_data_cache_page;
 		flush_data_cache_page = tx39_flush_data_cache_page;
 
diff --git a/arch/mips/mm/cache.c b/arch/mips/mm/cache.c
index 55099fbff4e6..3da216988672 100644
--- a/arch/mips/mm/cache.c
+++ b/arch/mips/mm/cache.c
@@ -47,7 +47,6 @@ void (*__flush_kernel_vmap_range)(unsigned long vaddr, int size);
 EXPORT_SYMBOL_GPL(__flush_kernel_vmap_range);
 
 /* MIPS specific cache operations */
-void (*flush_cache_sigtramp)(unsigned long addr);
 void (*local_flush_data_cache_page)(void * addr);
 void (*flush_data_cache_page)(unsigned long addr);
 void (*flush_icache_all)(void);
diff --git a/arch/mips/mm/context.c b/arch/mips/mm/context.c
new file mode 100644
index 000000000000..b25564090939
--- /dev/null
+++ b/arch/mips/mm/context.c
@@ -0,0 +1,291 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <linux/atomic.h>
+#include <linux/mmu_context.h>
+#include <linux/percpu.h>
+#include <linux/spinlock.h>
+
+static DEFINE_RAW_SPINLOCK(cpu_mmid_lock);
+
+static atomic64_t mmid_version;
+static unsigned int num_mmids;
+static unsigned long *mmid_map;
+
+static DEFINE_PER_CPU(u64, reserved_mmids);
+static cpumask_t tlb_flush_pending;
+
+static bool asid_versions_eq(int cpu, u64 a, u64 b)
+{
+	return ((a ^ b) & asid_version_mask(cpu)) == 0;
+}
+
+void get_new_mmu_context(struct mm_struct *mm)
+{
+	unsigned int cpu;
+	u64 asid;
+
+	/*
+	 * This function is specific to ASIDs, and should not be called when
+	 * MMIDs are in use.
+	 */
+	if (WARN_ON(IS_ENABLED(CONFIG_DEBUG_VM) && cpu_has_mmid))
+		return;
+
+	cpu = smp_processor_id();
+	asid = asid_cache(cpu);
+
+	if (!((asid += cpu_asid_inc()) & cpu_asid_mask(&cpu_data[cpu]))) {
+		if (cpu_has_vtag_icache)
+			flush_icache_all();
+		local_flush_tlb_all();	/* start new asid cycle */
+	}
+
+	set_cpu_context(cpu, mm, asid);
+	asid_cache(cpu) = asid;
+}
+EXPORT_SYMBOL_GPL(get_new_mmu_context);
+
+void check_mmu_context(struct mm_struct *mm)
+{
+	unsigned int cpu = smp_processor_id();
+
+	/*
+	 * This function is specific to ASIDs, and should not be called when
+	 * MMIDs are in use.
+	 */
+	if (WARN_ON(IS_ENABLED(CONFIG_DEBUG_VM) && cpu_has_mmid))
+		return;
+
+	/* Check if our ASID is of an older version and thus invalid */
+	if (!asid_versions_eq(cpu, cpu_context(cpu, mm), asid_cache(cpu)))
+		get_new_mmu_context(mm);
+}
+EXPORT_SYMBOL_GPL(check_mmu_context);
+
+static void flush_context(void)
+{
+	u64 mmid;
+	int cpu;
+
+	/* Update the list of reserved MMIDs and the MMID bitmap */
+	bitmap_clear(mmid_map, 0, num_mmids);
+
+	/* Reserve an MMID for kmap/wired entries */
+	__set_bit(MMID_KERNEL_WIRED, mmid_map);
+
+	for_each_possible_cpu(cpu) {
+		mmid = xchg_relaxed(&cpu_data[cpu].asid_cache, 0);
+
+		/*
+		 * If this CPU has already been through a
+		 * rollover, but hasn't run another task in
+		 * the meantime, we must preserve its reserved
+		 * MMID, as this is the only trace we have of
+		 * the process it is still running.
+		 */
+		if (mmid == 0)
+			mmid = per_cpu(reserved_mmids, cpu);
+
+		__set_bit(mmid & cpu_asid_mask(&cpu_data[cpu]), mmid_map);
+		per_cpu(reserved_mmids, cpu) = mmid;
+	}
+
+	/*
+	 * Queue a TLB invalidation for each CPU to perform on next
+	 * context-switch
+	 */
+	cpumask_setall(&tlb_flush_pending);
+}
+
+static bool check_update_reserved_mmid(u64 mmid, u64 newmmid)
+{
+	bool hit;
+	int cpu;
+
+	/*
+	 * Iterate over the set of reserved MMIDs looking for a match.
+	 * If we find one, then we can update our mm to use newmmid
+	 * (i.e. the same MMID in the current generation) but we can't
+	 * exit the loop early, since we need to ensure that all copies
+	 * of the old MMID are updated to reflect the mm. Failure to do
+	 * so could result in us missing the reserved MMID in a future
+	 * generation.
+	 */
+	hit = false;
+	for_each_possible_cpu(cpu) {
+		if (per_cpu(reserved_mmids, cpu) == mmid) {
+			hit = true;
+			per_cpu(reserved_mmids, cpu) = newmmid;
+		}
+	}
+
+	return hit;
+}
+
+static u64 get_new_mmid(struct mm_struct *mm)
+{
+	static u32 cur_idx = MMID_KERNEL_WIRED + 1;
+	u64 mmid, version, mmid_mask;
+
+	mmid = cpu_context(0, mm);
+	version = atomic64_read(&mmid_version);
+	mmid_mask = cpu_asid_mask(&boot_cpu_data);
+
+	if (!asid_versions_eq(0, mmid, 0)) {
+		u64 newmmid = version | (mmid & mmid_mask);
+
+		/*
+		 * If our current MMID was active during a rollover, we
+		 * can continue to use it and this was just a false alarm.
+		 */
+		if (check_update_reserved_mmid(mmid, newmmid)) {
+			mmid = newmmid;
+			goto set_context;
+		}
+
+		/*
+		 * We had a valid MMID in a previous life, so try to re-use
+		 * it if possible.
+		 */
+		if (!__test_and_set_bit(mmid & mmid_mask, mmid_map)) {
+			mmid = newmmid;
+			goto set_context;
+		}
+	}
+
+	/* Allocate a free MMID */
+	mmid = find_next_zero_bit(mmid_map, num_mmids, cur_idx);
+	if (mmid != num_mmids)
+		goto reserve_mmid;
+
+	/* We're out of MMIDs, so increment the global version */
+	version = atomic64_add_return_relaxed(asid_first_version(0),
+					      &mmid_version);
+
+	/* Note currently active MMIDs & mark TLBs as requiring flushes */
+	flush_context();
+
+	/* We have more MMIDs than CPUs, so this will always succeed */
+	mmid = find_first_zero_bit(mmid_map, num_mmids);
+
+reserve_mmid:
+	__set_bit(mmid, mmid_map);
+	cur_idx = mmid;
+	mmid |= version;
+set_context:
+	set_cpu_context(0, mm, mmid);
+	return mmid;
+}
+
+void check_switch_mmu_context(struct mm_struct *mm)
+{
+	unsigned int cpu = smp_processor_id();
+	u64 ctx, old_active_mmid;
+	unsigned long flags;
+
+	if (!cpu_has_mmid) {
+		check_mmu_context(mm);
+		write_c0_entryhi(cpu_asid(cpu, mm));
+		goto setup_pgd;
+	}
+
+	/*
+	 * MMID switch fast-path, to avoid acquiring cpu_mmid_lock when it's
+	 * unnecessary.
+	 *
+	 * The memory ordering here is subtle. If our active_mmids is non-zero
+	 * and the MMID matches the current version, then we update the CPU's
+	 * asid_cache with a relaxed cmpxchg. Racing with a concurrent rollover
+	 * means that either:
+	 *
+	 * - We get a zero back from the cmpxchg and end up waiting on
+	 *   cpu_mmid_lock in check_mmu_context(). Taking the lock synchronises
+	 *   with the rollover and so we are forced to see the updated
+	 *   generation.
+	 *
+	 * - We get a valid MMID back from the cmpxchg, which means the
+	 *   relaxed xchg in flush_context will treat us as reserved
+	 *   because atomic RmWs are totally ordered for a given location.
+	 */
+	ctx = cpu_context(cpu, mm);
+	old_active_mmid = READ_ONCE(cpu_data[cpu].asid_cache);
+	if (!old_active_mmid ||
+	    !asid_versions_eq(cpu, ctx, atomic64_read(&mmid_version)) ||
+	    !cmpxchg_relaxed(&cpu_data[cpu].asid_cache, old_active_mmid, ctx)) {
+		raw_spin_lock_irqsave(&cpu_mmid_lock, flags);
+
+		ctx = cpu_context(cpu, mm);
+		if (!asid_versions_eq(cpu, ctx, atomic64_read(&mmid_version)))
+			ctx = get_new_mmid(mm);
+
+		WRITE_ONCE(cpu_data[cpu].asid_cache, ctx);
+		raw_spin_unlock_irqrestore(&cpu_mmid_lock, flags);
+	}
+
+	/*
+	 * Invalidate the local TLB if needed. Note that we must only clear our
+	 * bit in tlb_flush_pending after this is complete, so that the
+	 * cpu_has_shared_ftlb_entries case below isn't misled.
+	 */
+	if (cpumask_test_cpu(cpu, &tlb_flush_pending)) {
+		if (cpu_has_vtag_icache)
+			flush_icache_all();
+		local_flush_tlb_all();
+		cpumask_clear_cpu(cpu, &tlb_flush_pending);
+	}
+
+	write_c0_memorymapid(ctx & cpu_asid_mask(&boot_cpu_data));
+
+	/*
+	 * If this CPU shares FTLB entries with its siblings and one or more of
+	 * those siblings hasn't yet invalidated its TLB following a version
+	 * increase then we need to invalidate any TLB entries for our MMID
+	 * that we might otherwise pick up from a sibling.
+	 *
+	 * We ifdef on CONFIG_SMP because cpu_sibling_map isn't defined in
+	 * CONFIG_SMP=n kernels.
+	 */
+#ifdef CONFIG_SMP
+	if (cpu_has_shared_ftlb_entries &&
+	    cpumask_intersects(&tlb_flush_pending, &cpu_sibling_map[cpu])) {
+		/* Ensure we operate on the new MMID */
+		mtc0_tlbw_hazard();
+
+		/*
+		 * Invalidate all TLB entries associated with the new
+		 * MMID, and wait for the invalidation to complete.
+		 */
+		ginvt_mmid();
+		sync_ginv();
+	}
+#endif
+
+setup_pgd:
+	TLBMISS_HANDLER_SETUP_PGD(mm->pgd);
+}
+EXPORT_SYMBOL_GPL(check_switch_mmu_context);
+
+static int mmid_init(void)
+{
+	if (!cpu_has_mmid)
+		return 0;
+
+	/*
+	 * Expect allocation after rollover to fail if we don't have at least
+	 * one more MMID than CPUs.
+	 */
+	num_mmids = asid_first_version(0);
+	WARN_ON(num_mmids <= num_possible_cpus());
+
+	atomic64_set(&mmid_version, asid_first_version(0));
+	mmid_map = kcalloc(BITS_TO_LONGS(num_mmids), sizeof(*mmid_map),
+			   GFP_KERNEL);
+	if (!mmid_map)
+		panic("Failed to allocate bitmap for %u MMIDs\n", num_mmids);
+
+	/* Reserve an MMID for kmap/wired entries */
+	__set_bit(MMID_KERNEL_WIRED, mmid_map);
+
+	pr_info("MMID allocator initialised with %u entries\n", num_mmids);
+	return 0;
+}
+early_initcall(mmid_init);
diff --git a/arch/mips/mm/dma-noncoherent.c b/arch/mips/mm/dma-noncoherent.c
index cb38461391cb..b57465733e87 100644
--- a/arch/mips/mm/dma-noncoherent.c
+++ b/arch/mips/mm/dma-noncoherent.c
@@ -120,13 +120,8 @@ static inline void dma_sync_phys(phys_addr_t paddr, size_t size,
 		if (PageHighMem(page)) {
 			void *addr;
 
-			if (offset + len > PAGE_SIZE) {
-				if (offset >= PAGE_SIZE) {
-					page += offset >> PAGE_SHIFT;
-					offset &= ~PAGE_MASK;
-				}
+			if (offset + len > PAGE_SIZE)
 				len = PAGE_SIZE - offset;
-			}
 
 			addr = kmap_atomic(page);
 			dma_sync_virt(addr + offset, len, dir);
@@ -145,12 +140,14 @@ void arch_sync_dma_for_device(struct device *dev, phys_addr_t paddr,
 	dma_sync_phys(paddr, size, dir);
 }
 
+#ifdef CONFIG_ARCH_HAS_SYNC_DMA_FOR_CPU
 void arch_sync_dma_for_cpu(struct device *dev, phys_addr_t paddr,
 		size_t size, enum dma_data_direction dir)
 {
 	if (cpu_needs_post_dma_flush(dev))
 		dma_sync_phys(paddr, size, dir);
 }
+#endif
 
 void arch_dma_cache_sync(struct device *dev, void *vaddr, size_t size,
 		enum dma_data_direction direction)
diff --git a/arch/mips/mm/init.c b/arch/mips/mm/init.c
index b521d8e2d359..c3b45e248806 100644
--- a/arch/mips/mm/init.c
+++ b/arch/mips/mm/init.c
@@ -84,6 +84,7 @@ void setup_zero_pages(void)
 static void *__kmap_pgprot(struct page *page, unsigned long addr, pgprot_t prot)
 {
 	enum fixed_addresses idx;
+	unsigned int uninitialized_var(old_mmid);
 	unsigned long vaddr, flags, entrylo;
 	unsigned long old_ctx;
 	pte_t pte;
@@ -110,6 +111,10 @@ static void *__kmap_pgprot(struct page *page, unsigned long addr, pgprot_t prot)
 	write_c0_entryhi(vaddr & (PAGE_MASK << 1));
 	write_c0_entrylo0(entrylo);
 	write_c0_entrylo1(entrylo);
+	if (cpu_has_mmid) {
+		old_mmid = read_c0_memorymapid();
+		write_c0_memorymapid(MMID_KERNEL_WIRED);
+	}
 #ifdef CONFIG_XPA
 	if (cpu_has_xpa) {
 		entrylo = (pte.pte_low & _PFNX_MASK);
@@ -124,6 +129,8 @@ static void *__kmap_pgprot(struct page *page, unsigned long addr, pgprot_t prot)
 	tlb_write_indexed();
 	tlbw_use_hazard();
 	write_c0_entryhi(old_ctx);
+	if (cpu_has_mmid)
+		write_c0_memorymapid(old_mmid);
 	local_irq_restore(flags);
 
 	return (void*) vaddr;
diff --git a/arch/mips/mm/sc-debugfs.c b/arch/mips/mm/sc-debugfs.c
index 2a116084216f..9507421de335 100644
--- a/arch/mips/mm/sc-debugfs.c
+++ b/arch/mips/mm/sc-debugfs.c
@@ -55,20 +55,11 @@ static const struct file_operations sc_prefetch_fops = {
 
 static int __init sc_debugfs_init(void)
 {
-	struct dentry *dir, *file;
-
-	if (!mips_debugfs_dir)
-		return -ENODEV;
+	struct dentry *dir;
 
 	dir = debugfs_create_dir("l2cache", mips_debugfs_dir);
-	if (IS_ERR(dir))
-		return PTR_ERR(dir);
-
-	file = debugfs_create_file("prefetch", S_IRUGO | S_IWUSR, dir,
-				   NULL, &sc_prefetch_fops);
-	if (!file)
-		return -ENOMEM;
-
+	debugfs_create_file("prefetch", S_IRUGO | S_IWUSR, dir, NULL,
+			    &sc_prefetch_fops);
 	return 0;
 }
 late_initcall(sc_debugfs_init);
diff --git a/arch/mips/mm/tlb-r3k.c b/arch/mips/mm/tlb-r3k.c
index 6f589e0112ce..50f207591b6d 100644
--- a/arch/mips/mm/tlb-r3k.c
+++ b/arch/mips/mm/tlb-r3k.c
@@ -67,18 +67,6 @@ void local_flush_tlb_all(void)
 	local_irq_restore(flags);
 }
 
-void local_flush_tlb_mm(struct mm_struct *mm)
-{
-	int cpu = smp_processor_id();
-
-	if (cpu_context(cpu, mm) != 0) {
-#ifdef DEBUG_TLB
-		printk("[tlbmm<%lu>]", (unsigned long)cpu_context(cpu, mm));
-#endif
-		drop_mmu_context(mm, cpu);
-	}
-}
-
 void local_flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
 			   unsigned long end)
 {
@@ -117,7 +105,7 @@ void local_flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
 			}
 			write_c0_entryhi(oldpid);
 		} else {
-			drop_mmu_context(mm, cpu);
+			drop_mmu_context(mm);
 		}
 		local_irq_restore(flags);
 	}
diff --git a/arch/mips/mm/tlb-r4k.c b/arch/mips/mm/tlb-r4k.c
index 0596505770db..c13e46ced425 100644
--- a/arch/mips/mm/tlb-r4k.c
+++ b/arch/mips/mm/tlb-r4k.c
@@ -104,23 +104,6 @@ void local_flush_tlb_all(void)
 }
 EXPORT_SYMBOL(local_flush_tlb_all);
 
-/* All entries common to a mm share an asid.  To effectively flush
-   these entries, we just bump the asid. */
-void local_flush_tlb_mm(struct mm_struct *mm)
-{
-	int cpu;
-
-	preempt_disable();
-
-	cpu = smp_processor_id();
-
-	if (cpu_context(cpu, mm) != 0) {
-		drop_mmu_context(mm, cpu);
-	}
-
-	preempt_enable();
-}
-
 void local_flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
 	unsigned long end)
 {
@@ -137,14 +120,23 @@ void local_flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
 		if (size <= (current_cpu_data.tlbsizeftlbsets ?
 			     current_cpu_data.tlbsize / 8 :
 			     current_cpu_data.tlbsize / 2)) {
-			int oldpid = read_c0_entryhi();
+			unsigned long old_entryhi, uninitialized_var(old_mmid);
 			int newpid = cpu_asid(cpu, mm);
 
+			old_entryhi = read_c0_entryhi();
+			if (cpu_has_mmid) {
+				old_mmid = read_c0_memorymapid();
+				write_c0_memorymapid(newpid);
+			}
+
 			htw_stop();
 			while (start < end) {
 				int idx;
 
-				write_c0_entryhi(start | newpid);
+				if (cpu_has_mmid)
+					write_c0_entryhi(start);
+				else
+					write_c0_entryhi(start | newpid);
 				start += (PAGE_SIZE << 1);
 				mtc0_tlbw_hazard();
 				tlb_probe();
@@ -160,10 +152,12 @@ void local_flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
 				tlb_write_indexed();
 			}
 			tlbw_use_hazard();
-			write_c0_entryhi(oldpid);
+			write_c0_entryhi(old_entryhi);
+			if (cpu_has_mmid)
+				write_c0_memorymapid(old_mmid);
 			htw_start();
 		} else {
-			drop_mmu_context(mm, cpu);
+			drop_mmu_context(mm);
 		}
 		flush_micro_tlb();
 		local_irq_restore(flags);
@@ -220,15 +214,21 @@ void local_flush_tlb_page(struct vm_area_struct *vma, unsigned long page)
 	int cpu = smp_processor_id();
 
 	if (cpu_context(cpu, vma->vm_mm) != 0) {
-		unsigned long flags;
-		int oldpid, newpid, idx;
+		unsigned long uninitialized_var(old_mmid);
+		unsigned long flags, old_entryhi;
+		int idx;
 
-		newpid = cpu_asid(cpu, vma->vm_mm);
 		page &= (PAGE_MASK << 1);
 		local_irq_save(flags);
-		oldpid = read_c0_entryhi();
+		old_entryhi = read_c0_entryhi();
 		htw_stop();
-		write_c0_entryhi(page | newpid);
+		if (cpu_has_mmid) {
+			old_mmid = read_c0_memorymapid();
+			write_c0_entryhi(page);
+			write_c0_memorymapid(cpu_asid(cpu, vma->vm_mm));
+		} else {
+			write_c0_entryhi(page | cpu_asid(cpu, vma->vm_mm));
+		}
 		mtc0_tlbw_hazard();
 		tlb_probe();
 		tlb_probe_hazard();
@@ -244,7 +244,9 @@ void local_flush_tlb_page(struct vm_area_struct *vma, unsigned long page)
 		tlbw_use_hazard();
 
 	finish:
-		write_c0_entryhi(oldpid);
+		write_c0_entryhi(old_entryhi);
+		if (cpu_has_mmid)
+			write_c0_memorymapid(old_mmid);
 		htw_start();
 		flush_micro_tlb_vm(vma);
 		local_irq_restore(flags);
@@ -307,9 +309,13 @@ void __update_tlb(struct vm_area_struct * vma, unsigned long address, pte_t pte)
 	local_irq_save(flags);
 
 	htw_stop();
-	pid = read_c0_entryhi() & cpu_asid_mask(&current_cpu_data);
 	address &= (PAGE_MASK << 1);
-	write_c0_entryhi(address | pid);
+	if (cpu_has_mmid) {
+		write_c0_entryhi(address);
+	} else {
+		pid = read_c0_entryhi() & cpu_asid_mask(&current_cpu_data);
+		write_c0_entryhi(address | pid);
+	}
 	pgdp = pgd_offset(vma->vm_mm, address);
 	mtc0_tlbw_hazard();
 	tlb_probe();
@@ -375,12 +381,17 @@ void add_wired_entry(unsigned long entrylo0, unsigned long entrylo1,
 #ifdef CONFIG_XPA
 	panic("Broken for XPA kernels");
 #else
+	unsigned int uninitialized_var(old_mmid);
 	unsigned long flags;
 	unsigned long wired;
 	unsigned long old_pagemask;
 	unsigned long old_ctx;
 
 	local_irq_save(flags);
+	if (cpu_has_mmid) {
+		old_mmid = read_c0_memorymapid();
+		write_c0_memorymapid(MMID_KERNEL_WIRED);
+	}
 	/* Save old context and create impossible VPN2 value */
 	old_ctx = read_c0_entryhi();
 	htw_stop();
@@ -398,6 +409,8 @@ void add_wired_entry(unsigned long entrylo0, unsigned long entrylo1,
 	tlbw_use_hazard();
 
 	write_c0_entryhi(old_ctx);
+	if (cpu_has_mmid)
+		write_c0_memorymapid(old_mmid);
 	tlbw_use_hazard();	/* What is the hazard here? */
 	htw_start();
 	write_c0_pagemask(old_pagemask);
diff --git a/arch/mips/mm/tlb-r8k.c b/arch/mips/mm/tlb-r8k.c
index e86e2e55ad3e..c1e9e144007e 100644
--- a/arch/mips/mm/tlb-r8k.c
+++ b/arch/mips/mm/tlb-r8k.c
@@ -50,14 +50,6 @@ void local_flush_tlb_all(void)
 	local_irq_restore(flags);
 }
 
-void local_flush_tlb_mm(struct mm_struct *mm)
-{
-	int cpu = smp_processor_id();
-
-	if (cpu_context(cpu, mm) != 0)
-		drop_mmu_context(mm, cpu);
-}
-
 void local_flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
 	unsigned long end)
 {
@@ -75,7 +67,7 @@ void local_flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
 	local_irq_save(flags);
 
 	if (size > TFP_TLB_SIZE / 2) {
-		drop_mmu_context(mm, cpu);
+		drop_mmu_context(mm);
 		goto out_restore;
 	}
 
diff --git a/arch/mips/pci/Makefile b/arch/mips/pci/Makefile
index 8185a2bfaf09..c4f976593061 100644
--- a/arch/mips/pci/Makefile
+++ b/arch/mips/pci/Makefile
@@ -29,6 +29,7 @@ obj-$(CONFIG_MIPS_PCI_VIRTIO)	+= pci-virtio-guest.o
 #
 # These are still pretty much in the old state, watch, go blind.
 #
+obj-$(CONFIG_ATH79)		+= fixup-ath79.o
 obj-$(CONFIG_LASAT)		+= pci-lasat.o
 obj-$(CONFIG_MIPS_COBALT)	+= fixup-cobalt.o
 obj-$(CONFIG_LEMOTE_FULOONG2E)	+= fixup-fuloong2e.o ops-loongson2.o
diff --git a/arch/mips/pci/fixup-ath79.c b/arch/mips/pci/fixup-ath79.c
new file mode 100644
index 000000000000..9e651a4af05e
--- /dev/null
+++ b/arch/mips/pci/fixup-ath79.c
@@ -0,0 +1,21 @@
+/*
+ *  Copyright (C) 2018 John Crispin <john@phrozen.org>
+ *
+ *  This program is free software; you can redistribute it and/or modify it
+ *  under the terms of the GNU General Public License version 2 as published
+ *  by the Free Software Foundation.
+ */
+
+#include <linux/pci.h>
+//#include <linux/of_irq.h>
+#include <linux/of_pci.h>
+
+int pcibios_plat_dev_init(struct pci_dev *dev)
+{
+	return PCIBIOS_SUCCESSFUL;
+}
+
+int pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
+{
+	return of_irq_parse_and_map_pci(dev, slot, pin);
+}
diff --git a/arch/mips/pci/ops-bridge.c b/arch/mips/pci/ops-bridge.c
index a1d2c4ae0d1b..df95b0da08f2 100644
--- a/arch/mips/pci/ops-bridge.c
+++ b/arch/mips/pci/ops-bridge.c
@@ -44,7 +44,7 @@ static int pci_conf0_read_config(struct pci_bus *bus, unsigned int devfn,
 				 int where, int size, u32 * value)
 {
 	struct bridge_controller *bc = BRIDGE_CONTROLLER(bus);
-	bridge_t *bridge = bc->base;
+	struct bridge_regs *bridge = bc->base;
 	int slot = PCI_SLOT(devfn);
 	int fn = PCI_FUNC(devfn);
 	volatile void *addr;
@@ -56,11 +56,11 @@ static int pci_conf0_read_config(struct pci_bus *bus, unsigned int devfn,
 		return PCIBIOS_DEVICE_NOT_FOUND;
 
 	/*
-	 * IOC3 is fucking fucked beyond belief ...  Don't even give the
+	 * IOC3 is broken beyond belief ...  Don't even give the
 	 * generic PCI code a chance to look at it for real ...
 	 */
 	if (cf == (PCI_VENDOR_ID_SGI | (PCI_DEVICE_ID_SGI_IOC3 << 16)))
-		goto oh_my_gawd;
+		goto is_ioc3;
 
 	addr = &bridge->b_type0_cfg_dev[slot].f[fn].c[where ^ (4 - size)];
 
@@ -73,21 +73,16 @@ static int pci_conf0_read_config(struct pci_bus *bus, unsigned int devfn,
 
 	return res ? PCIBIOS_DEVICE_NOT_FOUND : PCIBIOS_SUCCESSFUL;
 
-oh_my_gawd:
+is_ioc3:
 
 	/*
-	 * IOC3 is fucking fucked beyond belief ...  Don't even give the
-	 * generic PCI code a chance to look at the wrong register.
+	 * IOC3 special handling
 	 */
 	if ((where >= 0x14 && where < 0x40) || (where >= 0x48)) {
 		*value = emulate_ioc3_cfg(where, size);
 		return PCIBIOS_SUCCESSFUL;
 	}
 
-	/*
-	 * IOC3 is fucking fucked beyond belief ...  Don't try to access
-	 * anything but 32-bit words ...
-	 */
 	addr = &bridge->b_type0_cfg_dev[slot].f[fn].l[where >> 2];
 
 	if (get_dbe(cf, (u32 *) addr))
@@ -104,7 +99,7 @@ static int pci_conf1_read_config(struct pci_bus *bus, unsigned int devfn,
 				 int where, int size, u32 * value)
 {
 	struct bridge_controller *bc = BRIDGE_CONTROLLER(bus);
-	bridge_t *bridge = bc->base;
+	struct bridge_regs *bridge = bc->base;
 	int busno = bus->number;
 	int slot = PCI_SLOT(devfn);
 	int fn = PCI_FUNC(devfn);
@@ -112,19 +107,19 @@ static int pci_conf1_read_config(struct pci_bus *bus, unsigned int devfn,
 	u32 cf, shift, mask;
 	int res;
 
-	bridge->b_pci_cfg = (busno << 16) | (slot << 11);
+	bridge_write(bc, b_pci_cfg, (busno << 16) | (slot << 11));
 	addr = &bridge->b_type1_cfg.c[(fn << 8) | PCI_VENDOR_ID];
 	if (get_dbe(cf, (u32 *) addr))
 		return PCIBIOS_DEVICE_NOT_FOUND;
 
 	/*
-	 * IOC3 is fucking fucked beyond belief ...  Don't even give the
+	 * IOC3 is broken beyond belief ...  Don't even give the
 	 * generic PCI code a chance to look at it for real ...
 	 */
 	if (cf == (PCI_VENDOR_ID_SGI | (PCI_DEVICE_ID_SGI_IOC3 << 16)))
-		goto oh_my_gawd;
+		goto is_ioc3;
 
-	bridge->b_pci_cfg = (busno << 16) | (slot << 11);
+	bridge_write(bc, b_pci_cfg, (busno << 16) | (slot << 11));
 	addr = &bridge->b_type1_cfg.c[(fn << 8) | (where ^ (4 - size))];
 
 	if (size == 1)
@@ -136,22 +131,17 @@ static int pci_conf1_read_config(struct pci_bus *bus, unsigned int devfn,
 
 	return res ? PCIBIOS_DEVICE_NOT_FOUND : PCIBIOS_SUCCESSFUL;
 
-oh_my_gawd:
+is_ioc3:
 
 	/*
-	 * IOC3 is fucking fucked beyond belief ...  Don't even give the
-	 * generic PCI code a chance to look at the wrong register.
+	 * IOC3 special handling
 	 */
 	if ((where >= 0x14 && where < 0x40) || (where >= 0x48)) {
 		*value = emulate_ioc3_cfg(where, size);
 		return PCIBIOS_SUCCESSFUL;
 	}
 
-	/*
-	 * IOC3 is fucking fucked beyond belief ...  Don't try to access
-	 * anything but 32-bit words ...
-	 */
-	bridge->b_pci_cfg = (busno << 16) | (slot << 11);
+	bridge_write(bc, b_pci_cfg, (busno << 16) | (slot << 11));
 	addr = &bridge->b_type1_cfg.c[(fn << 8) | where];
 
 	if (get_dbe(cf, (u32 *) addr))
@@ -177,7 +167,7 @@ static int pci_conf0_write_config(struct pci_bus *bus, unsigned int devfn,
 				  int where, int size, u32 value)
 {
 	struct bridge_controller *bc = BRIDGE_CONTROLLER(bus);
-	bridge_t *bridge = bc->base;
+	struct bridge_regs *bridge = bc->base;
 	int slot = PCI_SLOT(devfn);
 	int fn = PCI_FUNC(devfn);
 	volatile void *addr;
@@ -189,11 +179,11 @@ static int pci_conf0_write_config(struct pci_bus *bus, unsigned int devfn,
 		return PCIBIOS_DEVICE_NOT_FOUND;
 
 	/*
-	 * IOC3 is fucking fucked beyond belief ...  Don't even give the
+	 * IOC3 is broken beyond belief ...  Don't even give the
 	 * generic PCI code a chance to look at it for real ...
 	 */
 	if (cf == (PCI_VENDOR_ID_SGI | (PCI_DEVICE_ID_SGI_IOC3 << 16)))
-		goto oh_my_gawd;
+		goto is_ioc3;
 
 	addr = &bridge->b_type0_cfg_dev[slot].f[fn].c[where ^ (4 - size)];
 
@@ -210,19 +200,14 @@ static int pci_conf0_write_config(struct pci_bus *bus, unsigned int devfn,
 
 	return PCIBIOS_SUCCESSFUL;
 
-oh_my_gawd:
+is_ioc3:
 
 	/*
-	 * IOC3 is fucking fucked beyond belief ...  Don't even give the
-	 * generic PCI code a chance to touch the wrong register.
+	 * IOC3 special handling
 	 */
 	if ((where >= 0x14 && where < 0x40) || (where >= 0x48))
 		return PCIBIOS_SUCCESSFUL;
 
-	/*
-	 * IOC3 is fucking fucked beyond belief ...  Don't try to access
-	 * anything but 32-bit words ...
-	 */
 	addr = &bridge->b_type0_cfg_dev[slot].f[fn].l[where >> 2];
 
 	if (get_dbe(cf, (u32 *) addr))
@@ -243,7 +228,7 @@ static int pci_conf1_write_config(struct pci_bus *bus, unsigned int devfn,
 				  int where, int size, u32 value)
 {
 	struct bridge_controller *bc = BRIDGE_CONTROLLER(bus);
-	bridge_t *bridge = bc->base;
+	struct bridge_regs *bridge = bc->base;
 	int slot = PCI_SLOT(devfn);
 	int fn = PCI_FUNC(devfn);
 	int busno = bus->number;
@@ -251,17 +236,17 @@ static int pci_conf1_write_config(struct pci_bus *bus, unsigned int devfn,
 	u32 cf, shift, mask, smask;
 	int res;
 
-	bridge->b_pci_cfg = (busno << 16) | (slot << 11);
+	bridge_write(bc, b_pci_cfg, (busno << 16) | (slot << 11));
 	addr = &bridge->b_type1_cfg.c[(fn << 8) | PCI_VENDOR_ID];
 	if (get_dbe(cf, (u32 *) addr))
 		return PCIBIOS_DEVICE_NOT_FOUND;
 
 	/*
-	 * IOC3 is fucking fucked beyond belief ...  Don't even give the
+	 * IOC3 is broken beyond belief ...  Don't even give the
 	 * generic PCI code a chance to look at it for real ...
 	 */
 	if (cf == (PCI_VENDOR_ID_SGI | (PCI_DEVICE_ID_SGI_IOC3 << 16)))
-		goto oh_my_gawd;
+		goto is_ioc3;
 
 	addr = &bridge->b_type1_cfg.c[(fn << 8) | (where ^ (4 - size))];
 
@@ -278,19 +263,14 @@ static int pci_conf1_write_config(struct pci_bus *bus, unsigned int devfn,
 
 	return PCIBIOS_SUCCESSFUL;
 
-oh_my_gawd:
+is_ioc3:
 
 	/*
-	 * IOC3 is fucking fucked beyond belief ...  Don't even give the
-	 * generic PCI code a chance to touch the wrong register.
+	 * IOC3 special handling
 	 */
 	if ((where >= 0x14 && where < 0x40) || (where >= 0x48))
 		return PCIBIOS_SUCCESSFUL;
 
-	/*
-	 * IOC3 is fucking fucked beyond belief ...  Don't try to access
-	 * anything but 32-bit words ...
-	 */
 	addr = &bridge->b_type0_cfg_dev[slot].f[fn].l[where >> 2];
 
 	if (get_dbe(cf, (u32 *) addr))
diff --git a/arch/mips/pci/pci-ip27.c b/arch/mips/pci/pci-ip27.c
index c94a66070a60..3c177b4d0609 100644
--- a/arch/mips/pci/pci-ip27.c
+++ b/arch/mips/pci/pci-ip27.c
@@ -24,22 +24,11 @@
 #define MAX_PCI_BUSSES		40
 
 /*
- * Max #PCI devices (like scsi controllers) we handle on a bus.
- */
-#define MAX_DEVICES_PER_PCIBUS	8
-
-/*
  * XXX: No kmalloc available when we do our crosstalk scan,
  *	we should try to move it later in the boot process.
  */
 static struct bridge_controller bridges[MAX_PCI_BUSSES];
 
-/*
- * Translate from irq to software PCI bus number and PCI slot.
- */
-struct bridge_controller *irq_to_bridge[MAX_PCI_BUSSES * MAX_DEVICES_PER_PCIBUS];
-int irq_to_slot[MAX_PCI_BUSSES * MAX_DEVICES_PER_PCIBUS];
-
 extern struct pci_ops bridge_pci_ops;
 
 int bridge_probe(nasid_t nasid, int widget_id, int masterwid)
@@ -47,7 +36,6 @@ int bridge_probe(nasid_t nasid, int widget_id, int masterwid)
 	unsigned long offset = NODE_OFFSET(nasid);
 	struct bridge_controller *bc;
 	static int num_bridges = 0;
-	bridge_t *bridge;
 	int slot;
 
 	pci_set_flags(PCI_PROBE_ONLY);
@@ -78,7 +66,6 @@ int bridge_probe(nasid_t nasid, int widget_id, int masterwid)
 	bc->io.end		= ~0UL;
 	bc->io.flags		= IORESOURCE_IO;
 
-	bc->irq_cpu = smp_processor_id();
 	bc->widget_id = widget_id;
 	bc->nasid = nasid;
 
@@ -87,45 +74,43 @@ int bridge_probe(nasid_t nasid, int widget_id, int masterwid)
 	/*
 	 * point to this bridge
 	 */
-	bridge = (bridge_t *) RAW_NODE_SWIN_BASE(nasid, widget_id);
+	bc->base = (struct bridge_regs *)RAW_NODE_SWIN_BASE(nasid, widget_id);
 
 	/*
 	 * Clear all pending interrupts.
 	 */
-	bridge->b_int_rst_stat = BRIDGE_IRR_ALL_CLR;
+	bridge_write(bc, b_int_rst_stat, BRIDGE_IRR_ALL_CLR);
 
 	/*
 	 * Until otherwise set up, assume all interrupts are from slot 0
 	 */
-	bridge->b_int_device = 0x0;
+	bridge_write(bc, b_int_device, 0x0);
 
 	/*
 	 * swap pio's to pci mem and io space (big windows)
 	 */
-	bridge->b_wid_control |= BRIDGE_CTRL_IO_SWAP |
-				 BRIDGE_CTRL_MEM_SWAP;
+	bridge_set(bc, b_wid_control, BRIDGE_CTRL_IO_SWAP |
+				      BRIDGE_CTRL_MEM_SWAP);
 #ifdef CONFIG_PAGE_SIZE_4KB
-	bridge->b_wid_control &= ~BRIDGE_CTRL_PAGE_SIZE;
+	bridge_clr(bc, b_wid_control, BRIDGE_CTRL_PAGE_SIZE);
 #else /* 16kB or larger */
-	bridge->b_wid_control |= BRIDGE_CTRL_PAGE_SIZE;
+	bridge_set(bc, b_wid_control, BRIDGE_CTRL_PAGE_SIZE);
 #endif
 
 	/*
 	 * Hmm...  IRIX sets additional bits in the address which
 	 * are documented as reserved in the bridge docs.
 	 */
-	bridge->b_wid_int_upper = 0x8000 | (masterwid << 16);
-	bridge->b_wid_int_lower = 0x01800090;	/* PI_INT_PEND_MOD off*/
-	bridge->b_dir_map = (masterwid << 20);	/* DMA */
-	bridge->b_int_enable = 0;
+	bridge_write(bc, b_wid_int_upper, 0x8000 | (masterwid << 16));
+	bridge_write(bc, b_wid_int_lower, 0x01800090); /* PI_INT_PEND_MOD off*/
+	bridge_write(bc, b_dir_map, (masterwid << 20));	/* DMA */
+	bridge_write(bc, b_int_enable, 0);
 
 	for (slot = 0; slot < 8; slot ++) {
-		bridge->b_device[slot].reg |= BRIDGE_DEV_SWAP_DIR;
+		bridge_set(bc, b_device[slot].reg, BRIDGE_DEV_SWAP_DIR);
 		bc->pci_int[slot] = -1;
 	}
-	bridge->b_wid_tflush;	  /* wait until Bridge PIO complete */
-
-	bc->base = bridge;
+	bridge_read(bc, b_wid_tflush);	  /* wait until Bridge PIO complete */
 
 	register_pci_controller(&bc->pc);
 
@@ -168,16 +153,12 @@ int pcibios_plat_dev_init(struct pci_dev *dev)
 
 	irq = bc->pci_int[slot];
 	if (irq == -1) {
-		irq = request_bridge_irq(bc);
+		irq = request_bridge_irq(bc, slot);
 		if (irq < 0)
 			return irq;
 
 		bc->pci_int[slot] = irq;
 	}
-
-	irq_to_bridge[irq] = bc;
-	irq_to_slot[irq] = slot;
-
 	dev->irq = irq;
 
 	return 0;
@@ -206,7 +187,7 @@ phys_addr_t __dma_to_phys(struct device *dev, dma_addr_t dma_addr)
 static inline void pci_disable_swapping(struct pci_dev *dev)
 {
 	struct bridge_controller *bc = BRIDGE_CONTROLLER(dev->bus);
-	bridge_t *bridge = bc->base;
+	struct bridge_regs *bridge = bc->base;
 	int slot = PCI_SLOT(dev->devfn);
 
 	/* Turn off byte swapping */
diff --git a/arch/mips/ralink/bootrom.c b/arch/mips/ralink/bootrom.c
index e1fa5972a81d..648f5eb2ba68 100644
--- a/arch/mips/ralink/bootrom.c
+++ b/arch/mips/ralink/bootrom.c
@@ -35,13 +35,7 @@ static const struct file_operations bootrom_file_ops = {
 
 static int bootrom_setup(void)
 {
-	if (!debugfs_create_file("bootrom", 0444,
-			NULL, NULL, &bootrom_file_ops)) {
-		pr_err("Failed to create bootrom debugfs file\n");
-
-		return -EINVAL;
-	}
-
+	debugfs_create_file("bootrom", 0444, NULL, NULL, &bootrom_file_ops);
 	return 0;
 }
 
diff --git a/arch/mips/sgi-ip27/Makefile b/arch/mips/sgi-ip27/Makefile
index 73502fda13ee..27c14ede191e 100644
--- a/arch/mips/sgi-ip27/Makefile
+++ b/arch/mips/sgi-ip27/Makefile
@@ -3,10 +3,9 @@
 # Makefile for the IP27 specific kernel interface routines under Linux.
 #
 
-obj-y	:= ip27-berr.o ip27-irq.o ip27-irqno.o ip27-init.o ip27-klconfig.o \
+obj-y	:= ip27-berr.o ip27-irq.o ip27-init.o ip27-klconfig.o \
 	   ip27-klnuma.o ip27-memory.o ip27-nmi.o ip27-reset.o ip27-timer.o \
 	   ip27-hubio.o ip27-xtalk.o
 
 obj-$(CONFIG_EARLY_PRINTK)	+= ip27-console.o
-obj-$(CONFIG_PCI)		+= ip27-irq-pci.o
 obj-$(CONFIG_SMP)		+= ip27-smp.o
diff --git a/arch/mips/sgi-ip27/ip27-hubio.c b/arch/mips/sgi-ip27/ip27-hubio.c
index 2abe016a0ffc..68fb0cb89d9d 100644
--- a/arch/mips/sgi-ip27/ip27-hubio.c
+++ b/arch/mips/sgi-ip27/ip27-hubio.c
@@ -63,7 +63,7 @@ unsigned long hub_pio_map(cnodeid_t cnode, xwidgetnum_t widget,
 		 * after we write it.
 		 */
 		IIO_ITTE_PUT(nasid, i, HUB_PIO_MAP_TO_MEM, widget, xtalk_addr);
-		(void) HUB_L(IIO_ITTE_GET(nasid, i));
+		__raw_readq(IIO_ITTE_GET(nasid, i));
 
 		return NODE_BWIN_BASE(nasid, widget) + (xtalk_addr % BWIN_SIZE);
 	}
@@ -135,7 +135,7 @@ static void hub_setup_prb(nasid_t nasid, int prbnum, int credits)
  **/
 static void hub_set_piomode(nasid_t nasid)
 {
-	hubreg_t ii_iowa;
+	u64 ii_iowa;
 	hubii_wcr_t ii_wcr;
 	unsigned i;
 
diff --git a/arch/mips/sgi-ip27/ip27-init.c b/arch/mips/sgi-ip27/ip27-init.c
index e501c43c02db..6074efeff894 100644
--- a/arch/mips/sgi-ip27/ip27-init.c
+++ b/arch/mips/sgi-ip27/ip27-init.c
@@ -52,13 +52,10 @@ EXPORT_SYMBOL_GPL(sn_cpu_info);
 
 extern void pcibr_setup(cnodeid_t);
 
-extern void xtalk_probe_node(cnodeid_t nid);
-
 static void per_hub_init(cnodeid_t cnode)
 {
 	struct hub_data *hub = hub_data(cnode);
 	nasid_t nasid = COMPACT_TO_NASID_NODEID(cnode);
-	int i;
 
 	cpumask_set_cpu(smp_processor_id(), &hub->h_cpus);
 
@@ -71,7 +68,6 @@ static void per_hub_init(cnodeid_t cnode)
 	REMOTE_HUB_S(nasid, IIO_ICTO, 0xff);
 
 	hub_rtc_init(cnode);
-	xtalk_probe_node(cnode);
 
 #ifdef CONFIG_REPLICATE_EXHANDLERS
 	/*
@@ -90,24 +86,6 @@ static void per_hub_init(cnodeid_t cnode)
 		__flush_cache_all();
 	}
 #endif
-
-	/*
-	 * Some interrupts are reserved by hardware or by software convention.
-	 * Mark these as reserved right away so they won't be used accidentally
-	 * later.
-	 */
-	for (i = 0; i <= BASE_PCI_IRQ; i++) {
-		__set_bit(i, hub->irq_alloc_mask);
-		LOCAL_HUB_CLR_INTR(INT_PEND0_BASELVL + i);
-	}
-
-	__set_bit(IP_PEND0_6_63, hub->irq_alloc_mask);
-	LOCAL_HUB_S(PI_INT_PEND_MOD, IP_PEND0_6_63);
-
-	for (i = NI_BRDCAST_ERR_A; i <= MSC_PANIC_INTR; i++) {
-		__set_bit(i, hub->irq_alloc_mask);
-		LOCAL_HUB_CLR_INTR(INT_PEND1_BASELVL + i);
-	}
 }
 
 void per_cpu_init(void)
@@ -116,8 +94,6 @@ void per_cpu_init(void)
 	int slice = LOCAL_HUB_L(PI_CPU_NUM);
 	cnodeid_t cnode = get_compact_nodeid();
 	struct hub_data *hub = hub_data(cnode);
-	struct slice_data *si = hub->slice + slice;
-	int i;
 
 	if (test_and_set_bit(slice, &hub->slice_map))
 		return;
@@ -126,22 +102,14 @@ void per_cpu_init(void)
 
 	per_hub_init(cnode);
 
-	for (i = 0; i < LEVELS_PER_SLICE; i++)
-		si->level_to_irq[i] = -1;
-
-	/*
-	 * We use this so we can find the local hub's data as fast as only
-	 * possible.
-	 */
-	cpu_data[cpu].data = si;
-
 	cpu_time_init();
 	install_ipi();
 
 	/* Install our NMI handler if symmon hasn't installed one. */
 	install_cpu_nmi_handler(cputoslice(cpu));
 
-	set_c0_status(SRB_DEV0 | SRB_DEV1);
+	enable_percpu_irq(IP27_HUB_PEND0_IRQ, IRQ_TYPE_NONE);
+	enable_percpu_irq(IP27_HUB_PEND1_IRQ, IRQ_TYPE_NONE);
 }
 
 /*
@@ -177,7 +145,7 @@ extern void ip27_reboot_setup(void);
 
 void __init plat_mem_setup(void)
 {
-	hubreg_t p, e, n_mode;
+	u64 p, e, n_mode;
 	nasid_t nid;
 
 	ip27_reboot_setup();
@@ -215,7 +183,6 @@ void __init plat_mem_setup(void)
 #endif
 
 	ioc3_eth_init();
-	per_cpu_init();
 
 	set_io_port_base(IO_BASE);
 }
diff --git a/arch/mips/sgi-ip27/ip27-irq-pci.c b/arch/mips/sgi-ip27/ip27-irq-pci.c
deleted file mode 100644
index cd449e90b917..000000000000
--- a/arch/mips/sgi-ip27/ip27-irq-pci.c
+++ /dev/null
@@ -1,266 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * ip27-irq.c: Highlevel interrupt handling for IP27 architecture.
- *
- * Copyright (C) 1999, 2000 Ralf Baechle (ralf@gnu.org)
- * Copyright (C) 1999, 2000 Silicon Graphics, Inc.
- * Copyright (C) 1999 - 2001 Kanoj Sarcar
- */
-
-#undef DEBUG
-
-#include <linux/irq.h>
-#include <linux/errno.h>
-#include <linux/signal.h>
-#include <linux/sched.h>
-#include <linux/types.h>
-#include <linux/interrupt.h>
-#include <linux/ioport.h>
-#include <linux/timex.h>
-#include <linux/smp.h>
-#include <linux/random.h>
-#include <linux/kernel.h>
-#include <linux/kernel_stat.h>
-#include <linux/delay.h>
-#include <linux/bitops.h>
-
-#include <asm/bootinfo.h>
-#include <asm/io.h>
-#include <asm/mipsregs.h>
-
-#include <asm/processor.h>
-#include <asm/pci/bridge.h>
-#include <asm/sn/addrs.h>
-#include <asm/sn/agent.h>
-#include <asm/sn/arch.h>
-#include <asm/sn/hub.h>
-#include <asm/sn/intr.h>
-
-/*
- * Linux has a controller-independent x86 interrupt architecture.
- * every controller has a 'controller-template', that is used
- * by the main code to do the right thing. Each driver-visible
- * interrupt source is transparently wired to the appropriate
- * controller. Thus drivers need not be aware of the
- * interrupt-controller.
- *
- * Various interrupt controllers we handle: 8259 PIC, SMP IO-APIC,
- * PIIX4's internal 8259 PIC and SGI's Visual Workstation Cobalt (IO-)APIC.
- * (IO-APICs assumed to be messaging to Pentium local-APICs)
- *
- * the code is designed to be easily extended with new/different
- * interrupt controllers, without having to do assembly magic.
- */
-
-extern struct bridge_controller *irq_to_bridge[];
-extern int irq_to_slot[];
-
-/*
- * use these macros to get the encoded nasid and widget id
- * from the irq value
- */
-#define IRQ_TO_BRIDGE(i)		irq_to_bridge[(i)]
-#define SLOT_FROM_PCI_IRQ(i)		irq_to_slot[i]
-
-static inline int alloc_level(int cpu, int irq)
-{
-	struct hub_data *hub = hub_data(cpu_to_node(cpu));
-	struct slice_data *si = cpu_data[cpu].data;
-	int level;
-
-	level = find_first_zero_bit(hub->irq_alloc_mask, LEVELS_PER_SLICE);
-	if (level >= LEVELS_PER_SLICE)
-		panic("Cpu %d flooded with devices", cpu);
-
-	__set_bit(level, hub->irq_alloc_mask);
-	si->level_to_irq[level] = irq;
-
-	return level;
-}
-
-static inline int find_level(cpuid_t *cpunum, int irq)
-{
-	int cpu, i;
-
-	for_each_online_cpu(cpu) {
-		struct slice_data *si = cpu_data[cpu].data;
-
-		for (i = BASE_PCI_IRQ; i < LEVELS_PER_SLICE; i++)
-			if (si->level_to_irq[i] == irq) {
-				*cpunum = cpu;
-
-				return i;
-			}
-	}
-
-	panic("Could not identify cpu/level for irq %d", irq);
-}
-
-static int intr_connect_level(int cpu, int bit)
-{
-	nasid_t nasid = COMPACT_TO_NASID_NODEID(cpu_to_node(cpu));
-	struct slice_data *si = cpu_data[cpu].data;
-
-	set_bit(bit, si->irq_enable_mask);
-
-	if (!cputoslice(cpu)) {
-		REMOTE_HUB_S(nasid, PI_INT_MASK0_A, si->irq_enable_mask[0]);
-		REMOTE_HUB_S(nasid, PI_INT_MASK1_A, si->irq_enable_mask[1]);
-	} else {
-		REMOTE_HUB_S(nasid, PI_INT_MASK0_B, si->irq_enable_mask[0]);
-		REMOTE_HUB_S(nasid, PI_INT_MASK1_B, si->irq_enable_mask[1]);
-	}
-
-	return 0;
-}
-
-static int intr_disconnect_level(int cpu, int bit)
-{
-	nasid_t nasid = COMPACT_TO_NASID_NODEID(cpu_to_node(cpu));
-	struct slice_data *si = cpu_data[cpu].data;
-
-	clear_bit(bit, si->irq_enable_mask);
-
-	if (!cputoslice(cpu)) {
-		REMOTE_HUB_S(nasid, PI_INT_MASK0_A, si->irq_enable_mask[0]);
-		REMOTE_HUB_S(nasid, PI_INT_MASK1_A, si->irq_enable_mask[1]);
-	} else {
-		REMOTE_HUB_S(nasid, PI_INT_MASK0_B, si->irq_enable_mask[0]);
-		REMOTE_HUB_S(nasid, PI_INT_MASK1_B, si->irq_enable_mask[1]);
-	}
-
-	return 0;
-}
-
-/* Startup one of the (PCI ...) IRQs routes over a bridge.  */
-static unsigned int startup_bridge_irq(struct irq_data *d)
-{
-	struct bridge_controller *bc;
-	bridgereg_t device;
-	bridge_t *bridge;
-	int pin, swlevel;
-	cpuid_t cpu;
-
-	pin = SLOT_FROM_PCI_IRQ(d->irq);
-	bc = IRQ_TO_BRIDGE(d->irq);
-	bridge = bc->base;
-
-	pr_debug("bridge_startup(): irq= 0x%x  pin=%d\n", d->irq, pin);
-	/*
-	 * "map" irq to a swlevel greater than 6 since the first 6 bits
-	 * of INT_PEND0 are taken
-	 */
-	swlevel = find_level(&cpu, d->irq);
-	bridge->b_int_addr[pin].addr = (0x20000 | swlevel | (bc->nasid << 8));
-	bridge->b_int_enable |= (1 << pin);
-	bridge->b_int_enable |= 0x7ffffe00;	/* more stuff in int_enable */
-
-	/*
-	 * Enable sending of an interrupt clear packt to the hub on a high to
-	 * low transition of the interrupt pin.
-	 *
-	 * IRIX sets additional bits in the address which are documented as
-	 * reserved in the bridge docs.
-	 */
-	bridge->b_int_mode |= (1UL << pin);
-
-	/*
-	 * We assume the bridge to have a 1:1 mapping between devices
-	 * (slots) and intr pins.
-	 */
-	device = bridge->b_int_device;
-	device &= ~(7 << (pin*3));
-	device |= (pin << (pin*3));
-	bridge->b_int_device = device;
-
-	bridge->b_wid_tflush;
-
-	intr_connect_level(cpu, swlevel);
-
-	return 0;	/* Never anything pending.  */
-}
-
-/* Shutdown one of the (PCI ...) IRQs routes over a bridge.  */
-static void shutdown_bridge_irq(struct irq_data *d)
-{
-	struct bridge_controller *bc = IRQ_TO_BRIDGE(d->irq);
-	bridge_t *bridge = bc->base;
-	int pin, swlevel;
-	cpuid_t cpu;
-
-	pr_debug("bridge_shutdown: irq 0x%x\n", d->irq);
-	pin = SLOT_FROM_PCI_IRQ(d->irq);
-
-	/*
-	 * map irq to a swlevel greater than 6 since the first 6 bits
-	 * of INT_PEND0 are taken
-	 */
-	swlevel = find_level(&cpu, d->irq);
-	intr_disconnect_level(cpu, swlevel);
-
-	bridge->b_int_enable &= ~(1 << pin);
-	bridge->b_wid_tflush;
-}
-
-static inline void enable_bridge_irq(struct irq_data *d)
-{
-	cpuid_t cpu;
-	int swlevel;
-
-	swlevel = find_level(&cpu, d->irq);	/* Criminal offence */
-	intr_connect_level(cpu, swlevel);
-}
-
-static inline void disable_bridge_irq(struct irq_data *d)
-{
-	cpuid_t cpu;
-	int swlevel;
-
-	swlevel = find_level(&cpu, d->irq);	/* Criminal offence */
-	intr_disconnect_level(cpu, swlevel);
-}
-
-static struct irq_chip bridge_irq_type = {
-	.name		= "bridge",
-	.irq_startup	= startup_bridge_irq,
-	.irq_shutdown	= shutdown_bridge_irq,
-	.irq_mask	= disable_bridge_irq,
-	.irq_unmask	= enable_bridge_irq,
-};
-
-void register_bridge_irq(unsigned int irq)
-{
-	irq_set_chip_and_handler(irq, &bridge_irq_type, handle_level_irq);
-}
-
-int request_bridge_irq(struct bridge_controller *bc)
-{
-	int irq = allocate_irqno();
-	int swlevel, cpu;
-	nasid_t nasid;
-
-	if (irq < 0)
-		return irq;
-
-	/*
-	 * "map" irq to a swlevel greater than 6 since the first 6 bits
-	 * of INT_PEND0 are taken
-	 */
-	cpu = bc->irq_cpu;
-	swlevel = alloc_level(cpu, irq);
-	if (unlikely(swlevel < 0)) {
-		free_irqno(irq);
-
-		return -EAGAIN;
-	}
-
-	/* Make sure it's not already pending when we connect it. */
-	nasid = COMPACT_TO_NASID_NODEID(cpu_to_node(cpu));
-	REMOTE_HUB_CLR_INTR(nasid, swlevel);
-
-	intr_connect_level(cpu, swlevel);
-
-	register_bridge_irq(irq);
-
-	return irq;
-}
diff --git a/arch/mips/sgi-ip27/ip27-irq.c b/arch/mips/sgi-ip27/ip27-irq.c
index 0dde6164a06f..710a59764b01 100644
--- a/arch/mips/sgi-ip27/ip27-irq.c
+++ b/arch/mips/sgi-ip27/ip27-irq.c
@@ -7,67 +7,234 @@
  * Copyright (C) 1999 - 2001 Kanoj Sarcar
  */
 
-#undef DEBUG
-
-#include <linux/init.h>
-#include <linux/irq.h>
-#include <linux/errno.h>
-#include <linux/signal.h>
-#include <linux/sched.h>
-#include <linux/types.h>
 #include <linux/interrupt.h>
+#include <linux/irq.h>
 #include <linux/ioport.h>
-#include <linux/timex.h>
-#include <linux/smp.h>
-#include <linux/random.h>
 #include <linux/kernel.h>
-#include <linux/kernel_stat.h>
-#include <linux/delay.h>
 #include <linux/bitops.h>
 
-#include <asm/bootinfo.h>
 #include <asm/io.h>
-#include <asm/mipsregs.h>
-
-#include <asm/processor.h>
+#include <asm/irq_cpu.h>
+#include <asm/pci/bridge.h>
 #include <asm/sn/addrs.h>
 #include <asm/sn/agent.h>
 #include <asm/sn/arch.h>
 #include <asm/sn/hub.h>
 #include <asm/sn/intr.h>
 
-/*
- * Linux has a controller-independent x86 interrupt architecture.
- * every controller has a 'controller-template', that is used
- * by the main code to do the right thing. Each driver-visible
- * interrupt source is transparently wired to the appropriate
- * controller. Thus drivers need not be aware of the
- * interrupt-controller.
- *
- * Various interrupt controllers we handle: 8259 PIC, SMP IO-APIC,
- * PIIX4's internal 8259 PIC and SGI's Visual Workstation Cobalt (IO-)APIC.
- * (IO-APICs assumed to be messaging to Pentium local-APICs)
- *
- * the code is designed to be easily extended with new/different
- * interrupt controllers, without having to do assembly magic.
- */
+struct hub_irq_data {
+	struct bridge_controller *bc;
+	u64	*irq_mask[2];
+	cpuid_t	cpu;
+	int	bit;
+	int	pin;
+};
 
-extern asmlinkage void ip27_irq(void);
+static DECLARE_BITMAP(hub_irq_map, IP27_HUB_IRQ_COUNT);
 
-/*
- * Find first bit set
- */
-static int ms1bit(unsigned long x)
+static DEFINE_PER_CPU(unsigned long [2], irq_enable_mask);
+
+static inline int alloc_level(void)
+{
+	int level;
+
+again:
+	level = find_first_zero_bit(hub_irq_map, IP27_HUB_IRQ_COUNT);
+	if (level >= IP27_HUB_IRQ_COUNT)
+		return -ENOSPC;
+
+	if (test_and_set_bit(level, hub_irq_map))
+		goto again;
+
+	return level;
+}
+
+static void enable_hub_irq(struct irq_data *d)
+{
+	struct hub_irq_data *hd = irq_data_get_irq_chip_data(d);
+	unsigned long *mask = per_cpu(irq_enable_mask, hd->cpu);
+
+	set_bit(hd->bit, mask);
+	__raw_writeq(mask[0], hd->irq_mask[0]);
+	__raw_writeq(mask[1], hd->irq_mask[1]);
+}
+
+static void disable_hub_irq(struct irq_data *d)
+{
+	struct hub_irq_data *hd = irq_data_get_irq_chip_data(d);
+	unsigned long *mask = per_cpu(irq_enable_mask, hd->cpu);
+
+	clear_bit(hd->bit, mask);
+	__raw_writeq(mask[0], hd->irq_mask[0]);
+	__raw_writeq(mask[1], hd->irq_mask[1]);
+}
+
+static unsigned int startup_bridge_irq(struct irq_data *d)
+{
+	struct hub_irq_data *hd = irq_data_get_irq_chip_data(d);
+	struct bridge_controller *bc;
+	nasid_t nasid;
+	u32 device;
+	int pin;
+
+	if (!hd)
+		return -EINVAL;
+
+	pin = hd->pin;
+	bc = hd->bc;
+
+	nasid = COMPACT_TO_NASID_NODEID(cpu_to_node(hd->cpu));
+	bridge_write(bc, b_int_addr[pin].addr,
+		     (0x20000 | hd->bit | (nasid << 8)));
+	bridge_set(bc, b_int_enable, (1 << pin));
+	bridge_set(bc, b_int_enable, 0x7ffffe00); /* more stuff in int_enable */
+
+	/*
+	 * Enable sending of an interrupt clear packt to the hub on a high to
+	 * low transition of the interrupt pin.
+	 *
+	 * IRIX sets additional bits in the address which are documented as
+	 * reserved in the bridge docs.
+	 */
+	bridge_set(bc, b_int_mode, (1UL << pin));
+
+	/*
+	 * We assume the bridge to have a 1:1 mapping between devices
+	 * (slots) and intr pins.
+	 */
+	device = bridge_read(bc, b_int_device);
+	device &= ~(7 << (pin*3));
+	device |= (pin << (pin*3));
+	bridge_write(bc, b_int_device, device);
+
+	bridge_read(bc, b_wid_tflush);
+
+	enable_hub_irq(d);
+
+	return 0;	/* Never anything pending.  */
+}
+
+static void shutdown_bridge_irq(struct irq_data *d)
+{
+	struct hub_irq_data *hd = irq_data_get_irq_chip_data(d);
+	struct bridge_controller *bc;
+	int pin = hd->pin;
+
+	if (!hd)
+		return;
+
+	disable_hub_irq(d);
+
+	bc = hd->bc;
+	bridge_clr(bc, b_int_enable, (1 << pin));
+	bridge_read(bc, b_wid_tflush);
+}
+
+static void setup_hub_mask(struct hub_irq_data *hd, const struct cpumask *mask)
+{
+	nasid_t nasid;
+	int cpu;
+
+	cpu = cpumask_first_and(mask, cpu_online_mask);
+	nasid = COMPACT_TO_NASID_NODEID(cpu_to_node(cpu));
+	hd->cpu = cpu;
+	if (!cputoslice(cpu)) {
+		hd->irq_mask[0] = REMOTE_HUB_PTR(nasid, PI_INT_MASK0_A);
+		hd->irq_mask[1] = REMOTE_HUB_PTR(nasid, PI_INT_MASK1_A);
+	} else {
+		hd->irq_mask[0] = REMOTE_HUB_PTR(nasid, PI_INT_MASK0_B);
+		hd->irq_mask[1] = REMOTE_HUB_PTR(nasid, PI_INT_MASK1_B);
+	}
+
+	/* Make sure it's not already pending when we connect it. */
+	REMOTE_HUB_CLR_INTR(nasid, hd->bit);
+}
+
+static int set_affinity_hub_irq(struct irq_data *d, const struct cpumask *mask,
+				bool force)
+{
+	struct hub_irq_data *hd = irq_data_get_irq_chip_data(d);
+
+	if (!hd)
+		return -EINVAL;
+
+	if (irqd_is_started(d))
+		disable_hub_irq(d);
+
+	setup_hub_mask(hd, mask);
+
+	if (irqd_is_started(d))
+		startup_bridge_irq(d);
+
+	irq_data_update_effective_affinity(d, cpumask_of(hd->cpu));
+
+	return 0;
+}
+
+static struct irq_chip hub_irq_type = {
+	.name		  = "HUB",
+	.irq_startup	  = startup_bridge_irq,
+	.irq_shutdown	  = shutdown_bridge_irq,
+	.irq_mask	  = disable_hub_irq,
+	.irq_unmask	  = enable_hub_irq,
+	.irq_set_affinity = set_affinity_hub_irq,
+};
+
+int request_bridge_irq(struct bridge_controller *bc, int pin)
 {
-	int b = 0, s;
+	struct hub_irq_data *hd;
+	struct hub_data *hub;
+	struct irq_desc *desc;
+	int swlevel;
+	int irq;
+
+	hd = kzalloc(sizeof(*hd), GFP_KERNEL);
+	if (!hd)
+		return -ENOMEM;
+
+	swlevel = alloc_level();
+	if (unlikely(swlevel < 0)) {
+		kfree(hd);
+		return -EAGAIN;
+	}
+	irq = swlevel + IP27_HUB_IRQ_BASE;
+
+	hd->bc = bc;
+	hd->bit = swlevel;
+	hd->pin = pin;
+	irq_set_chip_data(irq, hd);
+
+	/* use CPU connected to nearest hub */
+	hub = hub_data(NASID_TO_COMPACT_NODEID(bc->nasid));
+	setup_hub_mask(hd, &hub->h_cpus);
 
-	s = 16; if (x >> 16 == 0) s = 0; b += s; x >>= s;
-	s =  8; if (x >>  8 == 0) s = 0; b += s; x >>= s;
-	s =  4; if (x >>  4 == 0) s = 0; b += s; x >>= s;
-	s =  2; if (x >>  2 == 0) s = 0; b += s; x >>= s;
-	s =  1; if (x >>  1 == 0) s = 0; b += s;
+	desc = irq_to_desc(irq);
+	desc->irq_common_data.node = bc->nasid;
+	cpumask_copy(desc->irq_common_data.affinity, &hub->h_cpus);
 
-	return b;
+	return irq;
+}
+
+void ip27_hub_irq_init(void)
+{
+	int i;
+
+	for (i = IP27_HUB_IRQ_BASE;
+	     i < (IP27_HUB_IRQ_BASE + IP27_HUB_IRQ_COUNT); i++)
+		irq_set_chip_and_handler(i, &hub_irq_type, handle_level_irq);
+
+	/*
+	 * Some interrupts are reserved by hardware or by software convention.
+	 * Mark these as reserved right away so they won't be used accidentally
+	 * later.
+	 */
+	for (i = 0; i <= BASE_PCI_IRQ; i++)
+		set_bit(i, hub_irq_map);
+
+	set_bit(IP_PEND0_6_63, hub_irq_map);
+
+	for (i = NI_BRDCAST_ERR_A; i <= MSC_PANIC_INTR; i++)
+		set_bit(i, hub_irq_map);
 }
 
 /*
@@ -82,23 +249,19 @@ static int ms1bit(unsigned long x)
  * Kanoj 05.13.00
  */
 
-static void ip27_do_irq_mask0(void)
+static void ip27_do_irq_mask0(struct irq_desc *desc)
 {
-	int irq, swlevel;
-	hubreg_t pend0, mask0;
 	cpuid_t cpu = smp_processor_id();
-	int pi_int_mask0 =
-		(cputoslice(cpu) == 0) ?  PI_INT_MASK0_A : PI_INT_MASK0_B;
+	unsigned long *mask = per_cpu(irq_enable_mask, cpu);
+	u64 pend0;
 
 	/* copied from Irix intpend0() */
 	pend0 = LOCAL_HUB_L(PI_INT_PEND0);
-	mask0 = LOCAL_HUB_L(pi_int_mask0);
 
-	pend0 &= mask0;		/* Pick intrs we should look at */
+	pend0 &= mask[0];		/* Pick intrs we should look at */
 	if (!pend0)
 		return;
 
-	swlevel = ms1bit(pend0);
 #ifdef CONFIG_SMP
 	if (pend0 & (1UL << CPU_RESCHED_A_IRQ)) {
 		LOCAL_HUB_CLR_INTR(CPU_RESCHED_A_IRQ);
@@ -108,106 +271,66 @@ static void ip27_do_irq_mask0(void)
 		scheduler_ipi();
 	} else if (pend0 & (1UL << CPU_CALL_A_IRQ)) {
 		LOCAL_HUB_CLR_INTR(CPU_CALL_A_IRQ);
-		irq_enter();
 		generic_smp_call_function_interrupt();
-		irq_exit();
 	} else if (pend0 & (1UL << CPU_CALL_B_IRQ)) {
 		LOCAL_HUB_CLR_INTR(CPU_CALL_B_IRQ);
-		irq_enter();
 		generic_smp_call_function_interrupt();
-		irq_exit();
 	} else
 #endif
-	{
-		/* "map" swlevel to irq */
-		struct slice_data *si = cpu_data[cpu].data;
-
-		irq = si->level_to_irq[swlevel];
-		do_IRQ(irq);
-	}
+		generic_handle_irq(__ffs(pend0) + IP27_HUB_IRQ_BASE);
 
 	LOCAL_HUB_L(PI_INT_PEND0);
 }
 
-static void ip27_do_irq_mask1(void)
+static void ip27_do_irq_mask1(struct irq_desc *desc)
 {
-	int irq, swlevel;
-	hubreg_t pend1, mask1;
 	cpuid_t cpu = smp_processor_id();
-	int pi_int_mask1 = (cputoslice(cpu) == 0) ?  PI_INT_MASK1_A : PI_INT_MASK1_B;
-	struct slice_data *si = cpu_data[cpu].data;
+	unsigned long *mask = per_cpu(irq_enable_mask, cpu);
+	u64 pend1;
 
 	/* copied from Irix intpend0() */
 	pend1 = LOCAL_HUB_L(PI_INT_PEND1);
-	mask1 = LOCAL_HUB_L(pi_int_mask1);
 
-	pend1 &= mask1;		/* Pick intrs we should look at */
+	pend1 &= mask[1];		/* Pick intrs we should look at */
 	if (!pend1)
 		return;
 
-	swlevel = ms1bit(pend1);
-	/* "map" swlevel to irq */
-	irq = si->level_to_irq[swlevel];
-	LOCAL_HUB_CLR_INTR(swlevel);
-	do_IRQ(irq);
+	generic_handle_irq(__ffs(pend1) + IP27_HUB_IRQ_BASE + 64);
 
 	LOCAL_HUB_L(PI_INT_PEND1);
 }
 
-static void ip27_prof_timer(void)
-{
-	panic("CPU %d got a profiling interrupt", smp_processor_id());
-}
-
-static void ip27_hub_error(void)
-{
-	panic("CPU %d got a hub error interrupt", smp_processor_id());
-}
-
-asmlinkage void plat_irq_dispatch(void)
-{
-	unsigned long pending = read_c0_cause() & read_c0_status();
-	extern unsigned int rt_timer_irq;
-
-	if (pending & CAUSEF_IP4)
-		do_IRQ(rt_timer_irq);
-	else if (pending & CAUSEF_IP2)	/* PI_INT_PEND_0 or CC_PEND_{A|B} */
-		ip27_do_irq_mask0();
-	else if (pending & CAUSEF_IP3)	/* PI_INT_PEND_1 */
-		ip27_do_irq_mask1();
-	else if (pending & CAUSEF_IP5)
-		ip27_prof_timer();
-	else if (pending & CAUSEF_IP6)
-		ip27_hub_error();
-}
-
-void __init arch_init_irq(void)
-{
-}
-
 void install_ipi(void)
 {
-	int slice = LOCAL_HUB_L(PI_CPU_NUM);
 	int cpu = smp_processor_id();
-	struct slice_data *si = cpu_data[cpu].data;
-	struct hub_data *hub = hub_data(cpu_to_node(cpu));
+	unsigned long *mask = per_cpu(irq_enable_mask, cpu);
+	int slice = LOCAL_HUB_L(PI_CPU_NUM);
 	int resched, call;
 
 	resched = CPU_RESCHED_A_IRQ + slice;
-	__set_bit(resched, hub->irq_alloc_mask);
-	__set_bit(resched, si->irq_enable_mask);
+	set_bit(resched, mask);
 	LOCAL_HUB_CLR_INTR(resched);
 
 	call = CPU_CALL_A_IRQ + slice;
-	__set_bit(call, hub->irq_alloc_mask);
-	__set_bit(call, si->irq_enable_mask);
+	set_bit(call, mask);
 	LOCAL_HUB_CLR_INTR(call);
 
 	if (slice == 0) {
-		LOCAL_HUB_S(PI_INT_MASK0_A, si->irq_enable_mask[0]);
-		LOCAL_HUB_S(PI_INT_MASK1_A, si->irq_enable_mask[1]);
+		LOCAL_HUB_S(PI_INT_MASK0_A, mask[0]);
+		LOCAL_HUB_S(PI_INT_MASK1_A, mask[1]);
 	} else {
-		LOCAL_HUB_S(PI_INT_MASK0_B, si->irq_enable_mask[0]);
-		LOCAL_HUB_S(PI_INT_MASK1_B, si->irq_enable_mask[1]);
+		LOCAL_HUB_S(PI_INT_MASK0_B, mask[0]);
+		LOCAL_HUB_S(PI_INT_MASK1_B, mask[1]);
 	}
 }
+
+void __init arch_init_irq(void)
+{
+	mips_cpu_irq_init();
+	ip27_hub_irq_init();
+
+	irq_set_percpu_devid(IP27_HUB_PEND0_IRQ);
+	irq_set_chained_handler(IP27_HUB_PEND0_IRQ, ip27_do_irq_mask0);
+	irq_set_percpu_devid(IP27_HUB_PEND1_IRQ);
+	irq_set_chained_handler(IP27_HUB_PEND1_IRQ, ip27_do_irq_mask1);
+}
diff --git a/arch/mips/sgi-ip27/ip27-irqno.c b/arch/mips/sgi-ip27/ip27-irqno.c
deleted file mode 100644
index 957ab58e1c00..000000000000
--- a/arch/mips/sgi-ip27/ip27-irqno.c
+++ /dev/null
@@ -1,48 +0,0 @@
-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- */
-#include <linux/init.h>
-#include <linux/irq.h>
-#include <linux/types.h>
-
-#include <asm/barrier.h>
-
-static DECLARE_BITMAP(irq_map, NR_IRQS);
-
-int allocate_irqno(void)
-{
-	int irq;
-
-again:
-	irq = find_first_zero_bit(irq_map, NR_IRQS);
-
-	if (irq >= NR_IRQS)
-		return -ENOSPC;
-
-	if (test_and_set_bit(irq, irq_map))
-		goto again;
-
-	return irq;
-}
-
-/*
- * Allocate the 16 legacy interrupts for i8259 devices.	 This happens early
- * in the kernel initialization so treating allocation failure as BUG() is
- * ok.
- */
-void __init alloc_legacy_irqno(void)
-{
-	int i;
-
-	for (i = 0; i <= 16; i++)
-		BUG_ON(test_and_set_bit(i, irq_map));
-}
-
-void free_irqno(unsigned int irq)
-{
-	smp_mb__before_atomic();
-	clear_bit(irq, irq_map);
-	smp_mb__after_atomic();
-}
diff --git a/arch/mips/sgi-ip27/ip27-memory.c b/arch/mips/sgi-ip27/ip27-memory.c
index 813d13f92957..fb077a947575 100644
--- a/arch/mips/sgi-ip27/ip27-memory.c
+++ b/arch/mips/sgi-ip27/ip27-memory.c
@@ -44,7 +44,7 @@ static int is_fine_dirmode(void)
 	return ((LOCAL_HUB_L(NI_STATUS_REV_ID) & NSRI_REGIONSIZE_MASK) >> NSRI_REGIONSIZE_SHFT) & REGIONSIZE_FINE;
 }
 
-static hubreg_t get_region(cnodeid_t cnode)
+static u64 get_region(cnodeid_t cnode)
 {
 	if (fine_mode)
 		return COMPACT_TO_NASID_NODEID(cnode) >> NASID_TO_FINEREG_SHFT;
@@ -52,9 +52,9 @@ static hubreg_t get_region(cnodeid_t cnode)
 		return COMPACT_TO_NASID_NODEID(cnode) >> NASID_TO_COARSEREG_SHFT;
 }
 
-static hubreg_t region_mask;
+static u64 region_mask;
 
-static void gen_region_mask(hubreg_t *region_mask)
+static void gen_region_mask(u64 *region_mask)
 {
 	cnodeid_t cnode;
 
@@ -154,11 +154,11 @@ static int __init compute_node_distance(nasid_t nasid_a, nasid_t nasid_b)
 	}
 
 	if (router_a == NULL) {
-		printk("node_distance: router_a NULL\n");
+		pr_info("node_distance: router_a NULL\n");
 		return -1;
 	}
 	if (router_b == NULL) {
-		printk("node_distance: router_b NULL\n");
+		pr_info("node_distance: router_b NULL\n");
 		return -1;
 	}
 
@@ -203,17 +203,17 @@ static void __init dump_topology(void)
 	klrou_t *router;
 	cnodeid_t row, col;
 
-	printk("************** Topology ********************\n");
+	pr_info("************** Topology ********************\n");
 
-	printk("    ");
+	pr_info("    ");
 	for_each_online_node(col)
-		printk("%02d ", col);
-	printk("\n");
+		pr_cont("%02d ", col);
+	pr_cont("\n");
 	for_each_online_node(row) {
-		printk("%02d  ", row);
+		pr_info("%02d  ", row);
 		for_each_online_node(col)
-			printk("%2d ", node_distance(row, col));
-		printk("\n");
+			pr_cont("%2d ", node_distance(row, col));
+		pr_cont("\n");
 	}
 
 	for_each_online_node(cnode) {
@@ -230,7 +230,7 @@ static void __init dump_topology(void)
 		do {
 			if (brd->brd_flags & DUPLICATE_BOARD)
 				continue;
-			printk("Router %d:", router_num);
+			pr_cont("Router %d:", router_num);
 			router_num++;
 
 			router = (klrou_t *)NODE_OFFSET_TO_K0(NASID_GET(brd), brd->brd_compts[0]);
@@ -244,11 +244,11 @@ static void __init dump_topology(void)
 					router->rou_port[port].port_offset);
 
 				if (dest_brd->brd_type == KLTYPE_IP27)
-					printk(" %d", dest_brd->brd_nasid);
+					pr_cont(" %d", dest_brd->brd_nasid);
 				if (dest_brd->brd_type == KLTYPE_ROUTER)
-					printk(" r");
+					pr_cont(" r");
 			}
-			printk("\n");
+			pr_cont("\n");
 
 		} while ( (brd = find_lboard_class(KLCF_NEXT(brd), KLTYPE_ROUTER)) );
 	}
@@ -373,7 +373,7 @@ static void __init szmem(void)
 
 			if ((nodebytes >> PAGE_SHIFT) * (sizeof(struct page)) >
 						(slot0sz << PAGE_SHIFT)) {
-				printk("Ignoring slot %d onwards on node %d\n",
+				pr_info("Ignoring slot %d onwards on node %d\n",
 								slot, node);
 				slot = MAX_MEM_SLOTS;
 				continue;
diff --git a/arch/mips/sgi-ip27/ip27-nmi.c b/arch/mips/sgi-ip27/ip27-nmi.c
index 8ac2bfa35fb6..3aae388561d9 100644
--- a/arch/mips/sgi-ip27/ip27-nmi.c
+++ b/arch/mips/sgi-ip27/ip27-nmi.c
@@ -62,75 +62,75 @@ void nmi_cpu_eframe_save(nasid_t nasid, int slice)
 		(TO_UNCAC(TO_NODE(nasid, IP27_NMI_KREGS_OFFSET)) +
 		slice * IP27_NMI_KREGS_CPU_SIZE);
 
-	printk("NMI nasid %d: slice %d\n", nasid, slice);
+	pr_emerg("NMI nasid %d: slice %d\n", nasid, slice);
 
 	/*
 	 * Saved main processor registers
 	 */
 	for (i = 0; i < 32; ) {
 		if ((i % 4) == 0)
-			printk("$%2d   :", i);
-		printk(" %016lx", nr->gpr[i]);
+			pr_emerg("$%2d   :", i);
+		pr_cont(" %016lx", nr->gpr[i]);
 
 		i++;
 		if ((i % 4) == 0)
-			printk("\n");
+			pr_cont("\n");
 	}
 
-	printk("Hi    : (value lost)\n");
-	printk("Lo    : (value lost)\n");
+	pr_emerg("Hi    : (value lost)\n");
+	pr_emerg("Lo    : (value lost)\n");
 
 	/*
 	 * Saved cp0 registers
 	 */
-	printk("epc   : %016lx %pS\n", nr->epc, (void *) nr->epc);
-	printk("%s\n", print_tainted());
-	printk("ErrEPC: %016lx %pS\n", nr->error_epc, (void *) nr->error_epc);
-	printk("ra    : %016lx %pS\n", nr->gpr[31], (void *) nr->gpr[31]);
-	printk("Status: %08lx	      ", nr->sr);
+	pr_emerg("epc   : %016lx %pS\n", nr->epc, (void *)nr->epc);
+	pr_emerg("%s\n", print_tainted());
+	pr_emerg("ErrEPC: %016lx %pS\n", nr->error_epc, (void *)nr->error_epc);
+	pr_emerg("ra    : %016lx %pS\n", nr->gpr[31], (void *)nr->gpr[31]);
+	pr_emerg("Status: %08lx	      ", nr->sr);
 
 	if (nr->sr & ST0_KX)
-		printk("KX ");
+		pr_cont("KX ");
 	if (nr->sr & ST0_SX)
-		printk("SX	");
+		pr_cont("SX ");
 	if (nr->sr & ST0_UX)
-		printk("UX ");
+		pr_cont("UX ");
 
 	switch (nr->sr & ST0_KSU) {
 	case KSU_USER:
-		printk("USER ");
+		pr_cont("USER ");
 		break;
 	case KSU_SUPERVISOR:
-		printk("SUPERVISOR ");
+		pr_cont("SUPERVISOR ");
 		break;
 	case KSU_KERNEL:
-		printk("KERNEL ");
+		pr_cont("KERNEL ");
 		break;
 	default:
-		printk("BAD_MODE ");
+		pr_cont("BAD_MODE ");
 		break;
 	}
 
 	if (nr->sr & ST0_ERL)
-		printk("ERL ");
+		pr_cont("ERL ");
 	if (nr->sr & ST0_EXL)
-		printk("EXL ");
+		pr_cont("EXL ");
 	if (nr->sr & ST0_IE)
-		printk("IE ");
-	printk("\n");
+		pr_cont("IE ");
+	pr_cont("\n");
 
-	printk("Cause : %08lx\n", nr->cause);
-	printk("PrId  : %08x\n", read_c0_prid());
-	printk("BadVA : %016lx\n", nr->badva);
-	printk("CErr  : %016lx\n", nr->cache_err);
-	printk("NMI_SR: %016lx\n", nr->nmi_sr);
+	pr_emerg("Cause : %08lx\n", nr->cause);
+	pr_emerg("PrId  : %08x\n", read_c0_prid());
+	pr_emerg("BadVA : %016lx\n", nr->badva);
+	pr_emerg("CErr  : %016lx\n", nr->cache_err);
+	pr_emerg("NMI_SR: %016lx\n", nr->nmi_sr);
 
-	printk("\n");
+	pr_emerg("\n");
 }
 
 void nmi_dump_hub_irq(nasid_t nasid, int slice)
 {
-	hubreg_t mask0, mask1, pend0, pend1;
+	u64 mask0, mask1, pend0, pend1;
 
 	if (slice == 0) {				/* Slice A */
 		mask0 = REMOTE_HUB_L(nasid, PI_INT_MASK0_A);
@@ -143,9 +143,9 @@ void nmi_dump_hub_irq(nasid_t nasid, int slice)
 	pend0 = REMOTE_HUB_L(nasid, PI_INT_PEND0);
 	pend1 = REMOTE_HUB_L(nasid, PI_INT_PEND1);
 
-	printk("PI_INT_MASK0: %16Lx PI_INT_MASK1: %16Lx\n", mask0, mask1);
-	printk("PI_INT_PEND0: %16Lx PI_INT_PEND1: %16Lx\n", pend0, pend1);
-	printk("\n\n");
+	pr_emerg("PI_INT_MASK0: %16llx PI_INT_MASK1: %16llx\n", mask0, mask1);
+	pr_emerg("PI_INT_PEND0: %16llx PI_INT_PEND1: %16llx\n", pend0, pend1);
+	pr_emerg("\n\n");
 }
 
 /*
diff --git a/arch/mips/sgi-ip27/ip27-smp.c b/arch/mips/sgi-ip27/ip27-smp.c
index 545446dfe7fa..20b81209c6b8 100644
--- a/arch/mips/sgi-ip27/ip27-smp.c
+++ b/arch/mips/sgi-ip27/ip27-smp.c
@@ -177,7 +177,7 @@ static void ip27_send_ipi_mask(const struct cpumask *mask, unsigned int action)
 		ip27_send_ipi_single(i, action);
 }
 
-static void ip27_init_secondary(void)
+static void ip27_init_cpu(void)
 {
 	per_cpu_init();
 }
@@ -235,9 +235,10 @@ static void __init ip27_prepare_cpus(unsigned int max_cpus)
 const struct plat_smp_ops ip27_smp_ops = {
 	.send_ipi_single	= ip27_send_ipi_single,
 	.send_ipi_mask		= ip27_send_ipi_mask,
-	.init_secondary		= ip27_init_secondary,
+	.init_secondary		= ip27_init_cpu,
 	.smp_finish		= ip27_smp_finish,
 	.boot_secondary		= ip27_boot_secondary,
 	.smp_setup		= ip27_smp_setup,
 	.prepare_cpus		= ip27_prepare_cpus,
+	.prepare_boot_cpu	= ip27_init_cpu,
 };
diff --git a/arch/mips/sgi-ip27/ip27-timer.c b/arch/mips/sgi-ip27/ip27-timer.c
index 9d55247533a5..9b4b9ac621a3 100644
--- a/arch/mips/sgi-ip27/ip27-timer.c
+++ b/arch/mips/sgi-ip27/ip27-timer.c
@@ -38,20 +38,6 @@
 #include <asm/sn/sn0/hubio.h>
 #include <asm/pci/bridge.h>
 
-static void enable_rt_irq(struct irq_data *d)
-{
-}
-
-static void disable_rt_irq(struct irq_data *d)
-{
-}
-
-static struct irq_chip rt_irq_type = {
-	.name		= "SN HUB RT timer",
-	.irq_mask	= disable_rt_irq,
-	.irq_unmask	= enable_rt_irq,
-};
-
 static int rt_next_event(unsigned long delta, struct clock_event_device *evt)
 {
 	unsigned int cpu = smp_processor_id();
@@ -65,8 +51,6 @@ static int rt_next_event(unsigned long delta, struct clock_event_device *evt)
 	return LOCAL_HUB_L(PI_RT_COUNT) >= cnt ? -ETIME : 0;
 }
 
-unsigned int rt_timer_irq;
-
 static DEFINE_PER_CPU(struct clock_event_device, hub_rt_clockevent);
 static DEFINE_PER_CPU(char [11], hub_rt_name);
 
@@ -87,6 +71,7 @@ static irqreturn_t hub_rt_counter_handler(int irq, void *dev_id)
 
 struct irqaction hub_rt_irqaction = {
 	.handler	= hub_rt_counter_handler,
+	.percpu_dev_id	= &hub_rt_clockevent,
 	.flags		= IRQF_PERCPU | IRQF_TIMER,
 	.name		= "hub-rt",
 };
@@ -107,7 +92,6 @@ void hub_rt_clock_event_init(void)
 	unsigned int cpu = smp_processor_id();
 	struct clock_event_device *cd = &per_cpu(hub_rt_clockevent, cpu);
 	unsigned char *name = per_cpu(hub_rt_name, cpu);
-	int irq = rt_timer_irq;
 
 	sprintf(name, "hub-rt %d", cpu);
 	cd->name		= name;
@@ -118,29 +102,19 @@ void hub_rt_clock_event_init(void)
 	cd->min_delta_ns	= clockevent_delta2ns(0x300, cd);
 	cd->min_delta_ticks	= 0x300;
 	cd->rating		= 200;
-	cd->irq			= irq;
+	cd->irq			= IP27_RT_TIMER_IRQ;
 	cd->cpumask		= cpumask_of(cpu);
 	cd->set_next_event	= rt_next_event;
 	clockevents_register_device(cd);
+
+	enable_percpu_irq(IP27_RT_TIMER_IRQ, IRQ_TYPE_NONE);
 }
 
 static void __init hub_rt_clock_event_global_init(void)
 {
-	int irq;
-
-	do {
-		smp_wmb();
-		irq = rt_timer_irq;
-		if (irq)
-			break;
-
-		irq = allocate_irqno();
-		if (irq < 0)
-			panic("Allocation of irq number for timer failed");
-	} while (xchg(&rt_timer_irq, irq));
-
-	irq_set_chip_and_handler(irq, &rt_irq_type, handle_percpu_irq);
-	setup_irq(irq, &hub_rt_irqaction);
+	irq_set_handler(IP27_RT_TIMER_IRQ, handle_percpu_devid_irq);
+	irq_set_percpu_devid(IP27_RT_TIMER_IRQ);
+	setup_percpu_irq(IP27_RT_TIMER_IRQ, &hub_rt_irqaction);
 }
 
 static u64 hub_rt_read(struct clocksource *cs)
@@ -194,8 +168,6 @@ void cpu_time_init(void)
 		panic("No information about myself?");
 
 	printk("CPU %d clock is %dMHz.\n", smp_processor_id(), cpu->cpu_speed);
-
-	set_c0_status(SRB_TIMOCLK);
 }
 
 void hub_rtc_init(cnodeid_t cnode)
diff --git a/arch/mips/sgi-ip27/ip27-xtalk.c b/arch/mips/sgi-ip27/ip27-xtalk.c
index 4fe5678ba74d..ce06aaa115ae 100644
--- a/arch/mips/sgi-ip27/ip27-xtalk.c
+++ b/arch/mips/sgi-ip27/ip27-xtalk.c
@@ -99,7 +99,7 @@ static int xbow_probe(nasid_t nasid)
 	return 0;
 }
 
-void xtalk_probe_node(cnodeid_t nid)
+static void xtalk_probe_node(cnodeid_t nid)
 {
 	volatile u64		hubreg;
 	nasid_t			nasid;
@@ -133,3 +133,14 @@ void xtalk_probe_node(cnodeid_t nid)
 		break;
 	}
 }
+
+static int __init xtalk_init(void)
+{
+	cnodeid_t cnode;
+
+	for_each_online_node(cnode)
+		xtalk_probe_node(cnode);
+
+	return 0;
+}
+arch_initcall(xtalk_init);