MIPS: BCM63XX: Add PCIe Support for BCM6328

Add support for the PCIe port found on BCM6328.

Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: Maxime Bizon <mbizon@freebox.fr>
Cc: Florian Fainelli <florian@openwrt.org>
Cc: Kevin Cernekee <cernekee@gmail.com>
Patchwork: https://patchwork.linux-mips.org/patch/3956/
Reviewed-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

3 files changed, 69 insertions, 0 deletions

diff --git a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_cpu.h b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_cpu.h
index b842b6d2ba5e..e104ddb694a8 100644
--- a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_cpu.h
+++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_cpu.h
@@ -122,6 +122,7 @@ enum bcm63xx_regs_set {
 	RSET_USBH_PRIV,
 	RSET_MPI,
 	RSET_PCMCIA,
+	RSET_PCIE,
 	RSET_DSL,
 	RSET_ENET0,
 	RSET_ENET1,
@@ -188,6 +189,7 @@ enum bcm63xx_regs_set {
 #define BCM_6328_USBH_PRIV_BASE		(0xdeadbeef)
 #define BCM_6328_MPI_BASE		(0xdeadbeef)
 #define BCM_6328_PCMCIA_BASE		(0xdeadbeef)
+#define BCM_6328_PCIE_BASE		(0xb0e40000)
 #define BCM_6328_SDRAM_REGS_BASE	(0xdeadbeef)
 #define BCM_6328_DSL_BASE		(0xb0001900)
 #define BCM_6328_UBUS_BASE		(0xdeadbeef)
@@ -232,6 +234,7 @@ enum bcm63xx_regs_set {
 #define BCM_6338_USBH_PRIV_BASE		(0xdeadbeef)
 #define BCM_6338_MPI_BASE		(0xfffe3160)
 #define BCM_6338_PCMCIA_BASE		(0xdeadbeef)
+#define BCM_6338_PCIE_BASE		(0xdeadbeef)
 #define BCM_6338_SDRAM_REGS_BASE	(0xfffe3100)
 #define BCM_6338_DSL_BASE		(0xfffe1000)
 #define BCM_6338_UBUS_BASE		(0xdeadbeef)
@@ -279,6 +282,7 @@ enum bcm63xx_regs_set {
 #define BCM_6345_ENETSW_BASE		(0xdeadbeef)
 #define BCM_6345_PCMCIA_BASE		(0xfffe2028)
 #define BCM_6345_MPI_BASE		(0xfffe2000)
+#define BCM_6345_PCIE_BASE		(0xdeadbeef)
 #define BCM_6345_OHCI0_BASE		(0xfffe2100)
 #define BCM_6345_OHCI_PRIV_BASE		(0xfffe2200)
 #define BCM_6345_USBH_PRIV_BASE		(0xdeadbeef)
@@ -320,6 +324,7 @@ enum bcm63xx_regs_set {
 #define BCM_6348_USBH_PRIV_BASE		(0xdeadbeef)
 #define BCM_6348_MPI_BASE		(0xfffe2000)
 #define BCM_6348_PCMCIA_BASE		(0xfffe2054)
+#define BCM_6348_PCIE_BASE		(0xdeadbeef)
 #define BCM_6348_SDRAM_REGS_BASE	(0xfffe2300)
 #define BCM_6348_M2M_BASE		(0xfffe2800)
 #define BCM_6348_DSL_BASE		(0xfffe3000)
@@ -362,6 +367,7 @@ enum bcm63xx_regs_set {
 #define BCM_6358_USBH_PRIV_BASE		(0xfffe1500)
 #define BCM_6358_MPI_BASE		(0xfffe1000)
 #define BCM_6358_PCMCIA_BASE		(0xfffe1054)
+#define BCM_6358_PCIE_BASE		(0xdeadbeef)
 #define BCM_6358_SDRAM_REGS_BASE	(0xfffe2300)
 #define BCM_6358_M2M_BASE		(0xdeadbeef)
 #define BCM_6358_DSL_BASE		(0xfffe3000)
@@ -405,6 +411,7 @@ enum bcm63xx_regs_set {
 #define BCM_6368_USBH_PRIV_BASE		(0xb0001700)
 #define BCM_6368_MPI_BASE		(0xb0001000)
 #define BCM_6368_PCMCIA_BASE		(0xb0001054)
+#define BCM_6368_PCIE_BASE		(0xdeadbeef)
 #define BCM_6368_SDRAM_REGS_BASE	(0xdeadbeef)
 #define BCM_6368_M2M_BASE		(0xdeadbeef)
 #define BCM_6368_DSL_BASE		(0xdeadbeef)
@@ -453,6 +460,7 @@ extern const unsigned long *bcm63xx_regs_base;
 	__GEN_RSET_BASE(__cpu, USBH_PRIV)				\
 	__GEN_RSET_BASE(__cpu, MPI)					\
 	__GEN_RSET_BASE(__cpu, PCMCIA)					\
+	__GEN_RSET_BASE(__cpu, PCIE)					\
 	__GEN_RSET_BASE(__cpu, DSL)					\
 	__GEN_RSET_BASE(__cpu, ENET0)					\
 	__GEN_RSET_BASE(__cpu, ENET1)					\
@@ -493,6 +501,7 @@ extern const unsigned long *bcm63xx_regs_base;
 	[RSET_USBH_PRIV]	= BCM_## __cpu ##_USBH_PRIV_BASE,	\
 	[RSET_MPI]		= BCM_## __cpu ##_MPI_BASE,		\
 	[RSET_PCMCIA]		= BCM_## __cpu ##_PCMCIA_BASE,		\
+	[RSET_PCIE]		= BCM_## __cpu ##_PCIE_BASE,		\
 	[RSET_DSL]		= BCM_## __cpu ##_DSL_BASE,		\
 	[RSET_ENET0]		= BCM_## __cpu ##_ENET0_BASE,		\
 	[RSET_ENET1]		= BCM_## __cpu ##_ENET1_BASE,		\
diff --git a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_io.h b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_io.h
index 6dcd8b23592b..9203d90e610c 100644
--- a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_io.h
+++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_io.h
@@ -40,6 +40,10 @@
 #define BCM_CB_MEM_END_PA		(BCM_CB_MEM_BASE_PA +		\
 					BCM_CB_MEM_SIZE - 1)
 
+#define BCM_PCIE_MEM_BASE_PA		0x10f00000
+#define BCM_PCIE_MEM_SIZE		(16 * 1024 * 1024)
+#define BCM_PCIE_MEM_END_PA		(BCM_PCIE_MEM_BASE_PA +		\
+					BCM_PCIE_MEM_SIZE - 1)
 
 /*
  * Internal registers are accessed through KSEG3
@@ -85,6 +89,8 @@
 #define bcm_mpi_writel(v, o)	bcm_rset_writel(RSET_MPI, (v), (o))
 #define bcm_pcmcia_readl(o)	bcm_rset_readl(RSET_PCMCIA, (o))
 #define bcm_pcmcia_writel(v, o)	bcm_rset_writel(RSET_PCMCIA, (v), (o))
+#define bcm_pcie_readl(o)	bcm_rset_readl(RSET_PCIE, (o))
+#define bcm_pcie_writel(v, o)	bcm_rset_writel(RSET_PCIE, (v), (o))
 #define bcm_sdram_readl(o)	bcm_rset_readl(RSET_SDRAM, (o))
 #define bcm_sdram_writel(v, o)	bcm_rset_writel(RSET_SDRAM, (v), (o))
 #define bcm_memc_readl(o)	bcm_rset_readl(RSET_MEMC, (o))
diff --git a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_regs.h b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_regs.h
index 4fc2ab2c278a..4ccc2a748aff 100644
--- a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_regs.h
+++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_regs.h
@@ -1162,6 +1162,9 @@
 /*************************************************************************
  * _REG relative to RSET_MISC
  *************************************************************************/
+#define MISC_SERDES_CTRL_REG		0x0
+#define SERDES_PCIE_EN			(1 << 0)
+#define SERDES_PCIE_EXD_EN		(1 << 15)
 
 #define MISC_STRAPBUS_6328_REG		0x240
 #define STRAPBUS_6328_FCVO_SHIFT	7
@@ -1169,4 +1172,55 @@
 #define STRAPBUS_6328_BOOT_SEL_SERIAL	(1 << 28)
 #define STRAPBUS_6328_BOOT_SEL_NAND	(0 << 28)
 
+/*************************************************************************
+ * _REG relative to RSET_PCIE
+ *************************************************************************/
+
+#define PCIE_CONFIG2_REG		0x408
+#define CONFIG2_BAR1_SIZE_EN		1
+#define CONFIG2_BAR1_SIZE_MASK		0xf
+
+#define PCIE_IDVAL3_REG			0x43c
+#define IDVAL3_CLASS_CODE_MASK		0xffffff
+#define IDVAL3_SUBCLASS_SHIFT		8
+#define IDVAL3_CLASS_SHIFT		16
+
+#define PCIE_DLSTATUS_REG		0x1048
+#define DLSTATUS_PHYLINKUP		(1 << 13)
+
+#define PCIE_BRIDGE_OPT1_REG		0x2820
+#define OPT1_RD_BE_OPT_EN		(1 << 7)
+#define OPT1_RD_REPLY_BE_FIX_EN		(1 << 9)
+#define OPT1_PCIE_BRIDGE_HOLE_DET_EN	(1 << 11)
+#define OPT1_L1_INT_STATUS_MASK_POL	(1 << 12)
+
+#define PCIE_BRIDGE_OPT2_REG		0x2824
+#define OPT2_UBUS_UR_DECODE_DIS		(1 << 2)
+#define OPT2_TX_CREDIT_CHK_EN		(1 << 4)
+#define OPT2_CFG_TYPE1_BD_SEL		(1 << 7)
+#define OPT2_CFG_TYPE1_BUS_NO_SHIFT	16
+#define OPT2_CFG_TYPE1_BUS_NO_MASK	(0xff << OPT2_CFG_TYPE1_BUS_NO_SHIFT)
+
+#define PCIE_BRIDGE_BAR0_BASEMASK_REG	0x2828
+#define PCIE_BRIDGE_BAR1_BASEMASK_REG	0x2830
+#define BASEMASK_REMAP_EN		(1 << 0)
+#define BASEMASK_SWAP_EN		(1 << 1)
+#define BASEMASK_MASK_SHIFT		4
+#define BASEMASK_MASK_MASK		(0xfff << BASEMASK_MASK_SHIFT)
+#define BASEMASK_BASE_SHIFT		20
+#define BASEMASK_BASE_MASK		(0xfff << BASEMASK_BASE_SHIFT)
+
+#define PCIE_BRIDGE_BAR0_REBASE_ADDR_REG 0x282c
+#define PCIE_BRIDGE_BAR1_REBASE_ADDR_REG 0x2834
+#define REBASE_ADDR_BASE_SHIFT		20
+#define REBASE_ADDR_BASE_MASK		(0xfff << REBASE_ADDR_BASE_SHIFT)
+
+#define PCIE_BRIDGE_RC_INT_MASK_REG	0x2854
+#define PCIE_RC_INT_A			(1 << 0)
+#define PCIE_RC_INT_B			(1 << 1)
+#define PCIE_RC_INT_C			(1 << 2)
+#define PCIE_RC_INT_D			(1 << 3)
+
+#define PCIE_DEVICE_OFFSET		0x8000
+
 #endif /* BCM63XX_REGS_H_ */