diff options
Diffstat (limited to 'arch/arm')
34 files changed, 248 insertions, 1133 deletions
diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug index f15f82bf3a50..e968a52e4881 100644 --- a/arch/arm/Kconfig.debug +++ b/arch/arm/Kconfig.debug @@ -356,15 +356,15 @@ choice is nothing connected to read from the DCC. config DEBUG_SEMIHOSTING - bool "Kernel low-level debug output via semihosting I" + bool "Kernel low-level debug output via semihosting I/O" help Semihosting enables code running on an ARM target to use the I/O facilities on a host debugger/emulator through a - simple SVC calls. The host debugger or emulator must have + simple SVC call. The host debugger or emulator must have semihosting enabled for the special svc call to be trapped otherwise the kernel will crash. - This is known to work with OpenOCD, as wellas + This is known to work with OpenOCD, as well as ARM's Fast Models, or any other controlling environment that implements semihosting. diff --git a/arch/arm/Makefile b/arch/arm/Makefile index 210c923025b1..74381a31ee42 100644 --- a/arch/arm/Makefile +++ b/arch/arm/Makefile @@ -283,10 +283,10 @@ zImage Image xipImage bootpImage uImage: vmlinux zinstall uinstall install: vmlinux $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $@ -%.dtb: +%.dtb: scripts $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/$@ -dtbs: +dtbs: scripts $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/$@ # We use MRPROPER_FILES and CLEAN_FILES now diff --git a/arch/arm/boot/compressed/head.S b/arch/arm/boot/compressed/head.S index b8c64b80bafc..81769c1341fa 100644 --- a/arch/arm/boot/compressed/head.S +++ b/arch/arm/boot/compressed/head.S @@ -659,10 +659,14 @@ __armv7_mmu_cache_on: #ifdef CONFIG_CPU_ENDIAN_BE8 orr r0, r0, #1 << 25 @ big-endian page tables #endif + mrcne p15, 0, r6, c2, c0, 2 @ read ttb control reg orrne r0, r0, #1 @ MMU enabled movne r1, #0xfffffffd @ domain 0 = client + bic r6, r6, #1 << 31 @ 32-bit translation system + bic r6, r6, #3 << 0 @ use only ttbr0 mcrne p15, 0, r3, c2, c0, 0 @ load page table pointer mcrne p15, 0, r1, c3, c0, 0 @ load domain access control + mcrne p15, 0, r6, c2, c0, 2 @ load ttb control #endif mcr p15, 0, r0, c7, c5, 4 @ ISB mcr p15, 0, r0, c1, c0, 0 @ load control register diff --git a/arch/arm/configs/tegra_defconfig b/arch/arm/configs/tegra_defconfig index db2245353f0f..0d6bb738c6de 100644 --- a/arch/arm/configs/tegra_defconfig +++ b/arch/arm/configs/tegra_defconfig @@ -145,6 +145,8 @@ CONFIG_MMC_SDHCI_TEGRA=y CONFIG_RTC_CLASS=y CONFIG_RTC_DRV_EM3027=y CONFIG_RTC_DRV_TEGRA=y +CONFIG_DMADEVICES=y +CONFIG_TEGRA20_APB_DMA=y CONFIG_STAGING=y CONFIG_SENSORS_ISL29018=y CONFIG_SENSORS_ISL29028=y diff --git a/arch/arm/include/asm/assembler.h b/arch/arm/include/asm/assembler.h index 03fb93621d0d..5c8b3bf4d825 100644 --- a/arch/arm/include/asm/assembler.h +++ b/arch/arm/include/asm/assembler.h @@ -320,4 +320,12 @@ .size \name , . - \name .endm + .macro check_uaccess, addr:req, size:req, limit:req, tmp:req, bad:req +#ifndef CONFIG_CPU_USE_DOMAINS + adds \tmp, \addr, #\size - 1 + sbcccs \tmp, \tmp, \limit + bcs \bad +#endif + .endm + #endif /* __ASM_ASSEMBLER_H__ */ diff --git a/arch/arm/include/asm/memory.h b/arch/arm/include/asm/memory.h index e965f1b560f1..5f6ddcc56452 100644 --- a/arch/arm/include/asm/memory.h +++ b/arch/arm/include/asm/memory.h @@ -187,6 +187,7 @@ static inline unsigned long __phys_to_virt(unsigned long x) #define __phys_to_virt(x) ((x) - PHYS_OFFSET + PAGE_OFFSET) #endif #endif +#endif /* __ASSEMBLY__ */ #ifndef PHYS_OFFSET #ifdef PLAT_PHYS_OFFSET @@ -196,6 +197,8 @@ static inline unsigned long __phys_to_virt(unsigned long x) #endif #endif +#ifndef __ASSEMBLY__ + /* * PFNs are used to describe any physical page; this means * PFN 0 == physical address 0. diff --git a/arch/arm/include/asm/tlb.h b/arch/arm/include/asm/tlb.h index 314d4664eae7..99a19512ee26 100644 --- a/arch/arm/include/asm/tlb.h +++ b/arch/arm/include/asm/tlb.h @@ -199,6 +199,9 @@ static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t pte, { pgtable_page_dtor(pte); +#ifdef CONFIG_ARM_LPAE + tlb_add_flush(tlb, addr); +#else /* * With the classic ARM MMU, a pte page has two corresponding pmd * entries, each covering 1MB. @@ -206,6 +209,7 @@ static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t pte, addr &= PMD_MASK; tlb_add_flush(tlb, addr + SZ_1M - PAGE_SIZE); tlb_add_flush(tlb, addr + SZ_1M); +#endif tlb_remove_page(tlb, pte); } diff --git a/arch/arm/include/asm/uaccess.h b/arch/arm/include/asm/uaccess.h index 479a6352e0b5..77bd79f2ffdb 100644 --- a/arch/arm/include/asm/uaccess.h +++ b/arch/arm/include/asm/uaccess.h @@ -101,28 +101,39 @@ extern int __get_user_1(void *); extern int __get_user_2(void *); extern int __get_user_4(void *); -#define __get_user_x(__r2,__p,__e,__s,__i...) \ +#define __GUP_CLOBBER_1 "lr", "cc" +#ifdef CONFIG_CPU_USE_DOMAINS +#define __GUP_CLOBBER_2 "ip", "lr", "cc" +#else +#define __GUP_CLOBBER_2 "lr", "cc" +#endif +#define __GUP_CLOBBER_4 "lr", "cc" + +#define __get_user_x(__r2,__p,__e,__l,__s) \ __asm__ __volatile__ ( \ __asmeq("%0", "r0") __asmeq("%1", "r2") \ + __asmeq("%3", "r1") \ "bl __get_user_" #__s \ : "=&r" (__e), "=r" (__r2) \ - : "0" (__p) \ - : __i, "cc") + : "0" (__p), "r" (__l) \ + : __GUP_CLOBBER_##__s) -#define get_user(x,p) \ +#define __get_user_check(x,p) \ ({ \ + unsigned long __limit = current_thread_info()->addr_limit - 1; \ register const typeof(*(p)) __user *__p asm("r0") = (p);\ register unsigned long __r2 asm("r2"); \ + register unsigned long __l asm("r1") = __limit; \ register int __e asm("r0"); \ switch (sizeof(*(__p))) { \ case 1: \ - __get_user_x(__r2, __p, __e, 1, "lr"); \ - break; \ + __get_user_x(__r2, __p, __e, __l, 1); \ + break; \ case 2: \ - __get_user_x(__r2, __p, __e, 2, "r3", "lr"); \ + __get_user_x(__r2, __p, __e, __l, 2); \ break; \ case 4: \ - __get_user_x(__r2, __p, __e, 4, "lr"); \ + __get_user_x(__r2, __p, __e, __l, 4); \ break; \ default: __e = __get_user_bad(); break; \ } \ @@ -130,42 +141,57 @@ extern int __get_user_4(void *); __e; \ }) +#define get_user(x,p) \ + ({ \ + might_fault(); \ + __get_user_check(x,p); \ + }) + extern int __put_user_1(void *, unsigned int); extern int __put_user_2(void *, unsigned int); extern int __put_user_4(void *, unsigned int); extern int __put_user_8(void *, unsigned long long); -#define __put_user_x(__r2,__p,__e,__s) \ +#define __put_user_x(__r2,__p,__e,__l,__s) \ __asm__ __volatile__ ( \ __asmeq("%0", "r0") __asmeq("%2", "r2") \ + __asmeq("%3", "r1") \ "bl __put_user_" #__s \ : "=&r" (__e) \ - : "0" (__p), "r" (__r2) \ + : "0" (__p), "r" (__r2), "r" (__l) \ : "ip", "lr", "cc") -#define put_user(x,p) \ +#define __put_user_check(x,p) \ ({ \ + unsigned long __limit = current_thread_info()->addr_limit - 1; \ register const typeof(*(p)) __r2 asm("r2") = (x); \ register const typeof(*(p)) __user *__p asm("r0") = (p);\ + register unsigned long __l asm("r1") = __limit; \ register int __e asm("r0"); \ switch (sizeof(*(__p))) { \ case 1: \ - __put_user_x(__r2, __p, __e, 1); \ + __put_user_x(__r2, __p, __e, __l, 1); \ break; \ case 2: \ - __put_user_x(__r2, __p, __e, 2); \ + __put_user_x(__r2, __p, __e, __l, 2); \ break; \ case 4: \ - __put_user_x(__r2, __p, __e, 4); \ + __put_user_x(__r2, __p, __e, __l, 4); \ break; \ case 8: \ - __put_user_x(__r2, __p, __e, 8); \ + __put_user_x(__r2, __p, __e, __l, 8); \ break; \ default: __e = __put_user_bad(); break; \ } \ __e; \ }) +#define put_user(x,p) \ + ({ \ + might_fault(); \ + __put_user_check(x,p); \ + }) + #else /* CONFIG_MMU */ /* @@ -219,6 +245,7 @@ do { \ unsigned long __gu_addr = (unsigned long)(ptr); \ unsigned long __gu_val; \ __chk_user_ptr(ptr); \ + might_fault(); \ switch (sizeof(*(ptr))) { \ case 1: __get_user_asm_byte(__gu_val,__gu_addr,err); break; \ case 2: __get_user_asm_half(__gu_val,__gu_addr,err); break; \ @@ -300,6 +327,7 @@ do { \ unsigned long __pu_addr = (unsigned long)(ptr); \ __typeof__(*(ptr)) __pu_val = (x); \ __chk_user_ptr(ptr); \ + might_fault(); \ switch (sizeof(*(ptr))) { \ case 1: __put_user_asm_byte(__pu_val,__pu_addr,err); break; \ case 2: __put_user_asm_half(__pu_val,__pu_addr,err); break; \ diff --git a/arch/arm/kernel/hw_breakpoint.c b/arch/arm/kernel/hw_breakpoint.c index ba386bd94107..281bf3301241 100644 --- a/arch/arm/kernel/hw_breakpoint.c +++ b/arch/arm/kernel/hw_breakpoint.c @@ -159,6 +159,12 @@ static int debug_arch_supported(void) arch >= ARM_DEBUG_ARCH_V7_1; } +/* Can we determine the watchpoint access type from the fsr? */ +static int debug_exception_updates_fsr(void) +{ + return 0; +} + /* Determine number of WRP registers available. */ static int get_num_wrp_resources(void) { @@ -604,13 +610,14 @@ int arch_validate_hwbkpt_settings(struct perf_event *bp) /* Aligned */ break; case 1: - /* Allow single byte watchpoint. */ - if (info->ctrl.len == ARM_BREAKPOINT_LEN_1) - break; case 2: /* Allow halfword watchpoints and breakpoints. */ if (info->ctrl.len == ARM_BREAKPOINT_LEN_2) break; + case 3: + /* Allow single byte watchpoint. */ + if (info->ctrl.len == ARM_BREAKPOINT_LEN_1) + break; default: ret = -EINVAL; goto out; @@ -619,18 +626,35 @@ int arch_validate_hwbkpt_settings(struct perf_event *bp) info->address &= ~alignment_mask; info->ctrl.len <<= offset; - /* - * Currently we rely on an overflow handler to take - * care of single-stepping the breakpoint when it fires. - * In the case of userspace breakpoints on a core with V7 debug, - * we can use the mismatch feature as a poor-man's hardware - * single-step, but this only works for per-task breakpoints. - */ - if (!bp->overflow_handler && (arch_check_bp_in_kernelspace(bp) || - !core_has_mismatch_brps() || !bp->hw.bp_target)) { - pr_warning("overflow handler required but none found\n"); - ret = -EINVAL; + if (!bp->overflow_handler) { + /* + * Mismatch breakpoints are required for single-stepping + * breakpoints. + */ + if (!core_has_mismatch_brps()) + return -EINVAL; + + /* We don't allow mismatch breakpoints in kernel space. */ + if (arch_check_bp_in_kernelspace(bp)) + return -EPERM; + + /* + * Per-cpu breakpoints are not supported by our stepping + * mechanism. + */ + if (!bp->hw.bp_target) + return -EINVAL; + + /* + * We only support specific access types if the fsr + * reports them. + */ + if (!debug_exception_updates_fsr() && + (info->ctrl.type == ARM_BREAKPOINT_LOAD || + info->ctrl.type == ARM_BREAKPOINT_STORE)) + return -EINVAL; } + out: return ret; } @@ -706,10 +730,12 @@ static void watchpoint_handler(unsigned long addr, unsigned int fsr, goto unlock; /* Check that the access type matches. */ - access = (fsr & ARM_FSR_ACCESS_MASK) ? HW_BREAKPOINT_W : - HW_BREAKPOINT_R; - if (!(access & hw_breakpoint_type(wp))) - goto unlock; + if (debug_exception_updates_fsr()) { + access = (fsr & ARM_FSR_ACCESS_MASK) ? + HW_BREAKPOINT_W : HW_BREAKPOINT_R; + if (!(access & hw_breakpoint_type(wp))) + goto unlock; + } /* We have a winner. */ info->trigger = addr; diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c index f7945218b8c6..b0179b89a04c 100644 --- a/arch/arm/kernel/traps.c +++ b/arch/arm/kernel/traps.c @@ -420,20 +420,23 @@ asmlinkage void __exception do_undefinstr(struct pt_regs *regs) #endif instr = *(u32 *) pc; } else if (thumb_mode(regs)) { - get_user(instr, (u16 __user *)pc); + if (get_user(instr, (u16 __user *)pc)) + goto die_sig; if (is_wide_instruction(instr)) { unsigned int instr2; - get_user(instr2, (u16 __user *)pc+1); + if (get_user(instr2, (u16 __user *)pc+1)) + goto die_sig; instr <<= 16; instr |= instr2; } - } else { - get_user(instr, (u32 __user *)pc); + } else if (get_user(instr, (u32 __user *)pc)) { + goto die_sig; } if (call_undef_hook(regs, instr) == 0) return; +die_sig: #ifdef CONFIG_DEBUG_USER if (user_debug & UDBG_UNDEFINED) { printk(KERN_INFO "%s (%d): undefined instruction: pc=%p\n", diff --git a/arch/arm/lib/delay.c b/arch/arm/lib/delay.c index d6dacc69254e..395d5fbb8fa2 100644 --- a/arch/arm/lib/delay.c +++ b/arch/arm/lib/delay.c @@ -59,6 +59,7 @@ void __init init_current_timer_delay(unsigned long freq) { pr_info("Switching to timer-based delay loop\n"); lpj_fine = freq / HZ; + loops_per_jiffy = lpj_fine; arm_delay_ops.delay = __timer_delay; arm_delay_ops.const_udelay = __timer_const_udelay; arm_delay_ops.udelay = __timer_udelay; diff --git a/arch/arm/lib/getuser.S b/arch/arm/lib/getuser.S index 11093a7c3e32..9b06bb41fca6 100644 --- a/arch/arm/lib/getuser.S +++ b/arch/arm/lib/getuser.S @@ -16,8 +16,9 @@ * __get_user_X * * Inputs: r0 contains the address + * r1 contains the address limit, which must be preserved * Outputs: r0 is the error code - * r2, r3 contains the zero-extended value + * r2 contains the zero-extended value * lr corrupted * * No other registers must be altered. (see <asm/uaccess.h> @@ -27,33 +28,39 @@ * Note also that it is intended that __get_user_bad is not global. */ #include <linux/linkage.h> +#include <asm/assembler.h> #include <asm/errno.h> #include <asm/domain.h> ENTRY(__get_user_1) + check_uaccess r0, 1, r1, r2, __get_user_bad 1: TUSER(ldrb) r2, [r0] mov r0, #0 mov pc, lr ENDPROC(__get_user_1) ENTRY(__get_user_2) -#ifdef CONFIG_THUMB2_KERNEL -2: TUSER(ldrb) r2, [r0] -3: TUSER(ldrb) r3, [r0, #1] + check_uaccess r0, 2, r1, r2, __get_user_bad +#ifdef CONFIG_CPU_USE_DOMAINS +rb .req ip +2: ldrbt r2, [r0], #1 +3: ldrbt rb, [r0], #0 #else -2: TUSER(ldrb) r2, [r0], #1 -3: TUSER(ldrb) r3, [r0] +rb .req r0 +2: ldrb r2, [r0] +3: ldrb rb, [r0, #1] #endif #ifndef __ARMEB__ - orr r2, r2, r3, lsl #8 + orr r2, r2, rb, lsl #8 #else - orr r2, r3, r2, lsl #8 + orr r2, rb, r2, lsl #8 #endif mov r0, #0 mov pc, lr ENDPROC(__get_user_2) ENTRY(__get_user_4) + check_uaccess r0, 4, r1, r2, __get_user_bad 4: TUSER(ldr) r2, [r0] mov r0, #0 mov pc, lr diff --git a/arch/arm/lib/putuser.S b/arch/arm/lib/putuser.S index 7db25990c589..3d73dcb959b0 100644 --- a/arch/arm/lib/putuser.S +++ b/arch/arm/lib/putuser.S @@ -16,6 +16,7 @@ * __put_user_X * * Inputs: r0 contains the address + * r1 contains the address limit, which must be preserved * r2, r3 contains the value * Outputs: r0 is the error code * lr corrupted @@ -27,16 +28,19 @@ * Note also that it is intended that __put_user_bad is not global. */ #include <linux/linkage.h> +#include <asm/assembler.h> #include <asm/errno.h> #include <asm/domain.h> ENTRY(__put_user_1) + check_uaccess r0, 1, r1, ip, __put_user_bad 1: TUSER(strb) r2, [r0] mov r0, #0 mov pc, lr ENDPROC(__put_user_1) ENTRY(__put_user_2) + check_uaccess r0, 2, r1, ip, __put_user_bad mov ip, r2, lsr #8 #ifdef CONFIG_THUMB2_KERNEL #ifndef __ARMEB__ @@ -60,12 +64,14 @@ ENTRY(__put_user_2) ENDPROC(__put_user_2) ENTRY(__put_user_4) + check_uaccess r0, 4, r1, ip, __put_user_bad 4: TUSER(str) r2, [r0] mov r0, #0 mov pc, lr ENDPROC(__put_user_4) ENTRY(__put_user_8) + check_uaccess r0, 8, r1, ip, __put_user_bad #ifdef CONFIG_THUMB2_KERNEL 5: TUSER(str) r2, [r0] 6: TUSER(str) r3, [r0, #4] diff --git a/arch/arm/mach-imx/clk-imx25.c b/arch/arm/mach-imx/clk-imx25.c index fdd8cc87c9fe..4431a62fff5b 100644 --- a/arch/arm/mach-imx/clk-imx25.c +++ b/arch/arm/mach-imx/clk-imx25.c @@ -222,10 +222,8 @@ int __init mx25_clocks_init(void) clk_register_clkdev(clk[lcdc_ipg], "ipg", "imx-fb.0"); clk_register_clkdev(clk[lcdc_ahb], "ahb", "imx-fb.0"); clk_register_clkdev(clk[wdt_ipg], NULL, "imx2-wdt.0"); - clk_register_clkdev(clk[ssi1_ipg_per], "per", "imx-ssi.0"); - clk_register_clkdev(clk[ssi1_ipg], "ipg", "imx-ssi.0"); - clk_register_clkdev(clk[ssi2_ipg_per], "per", "imx-ssi.1"); - clk_register_clkdev(clk[ssi2_ipg], "ipg", "imx-ssi.1"); + clk_register_clkdev(clk[ssi1_ipg], NULL, "imx-ssi.0"); + clk_register_clkdev(clk[ssi2_ipg], NULL, "imx-ssi.1"); clk_register_clkdev(clk[esdhc1_ipg_per], "per", "sdhci-esdhc-imx25.0"); clk_register_clkdev(clk[esdhc1_ipg], "ipg", "sdhci-esdhc-imx25.0"); clk_register_clkdev(clk[esdhc1_ahb], "ahb", "sdhci-esdhc-imx25.0"); diff --git a/arch/arm/mach-imx/clk-imx35.c b/arch/arm/mach-imx/clk-imx35.c index c6422fb10bae..65fb8bcd86cb 100644 --- a/arch/arm/mach-imx/clk-imx35.c +++ b/arch/arm/mach-imx/clk-imx35.c @@ -230,10 +230,8 @@ int __init mx35_clocks_init() clk_register_clkdev(clk[ipu_gate], NULL, "mx3_sdc_fb"); clk_register_clkdev(clk[owire_gate], NULL, "mxc_w1"); clk_register_clkdev(clk[sdma_gate], NULL, "imx35-sdma"); - clk_register_clkdev(clk[ipg], "ipg", "imx-ssi.0"); - clk_register_clkdev(clk[ssi1_div_post], "per", "imx-ssi.0"); - clk_register_clkdev(clk[ipg], "ipg", "imx-ssi.1"); - clk_register_clkdev(clk[ssi2_div_post], "per", "imx-ssi.1"); + clk_register_clkdev(clk[ssi1_gate], NULL, "imx-ssi.0"); + clk_register_clkdev(clk[ssi2_gate], NULL, "imx-ssi.1"); /* i.mx35 has the i.mx21 type uart */ clk_register_clkdev(clk[uart1_gate], "per", "imx21-uart.0"); clk_register_clkdev(clk[ipg], "ipg", "imx21-uart.0"); diff --git a/arch/arm/mach-omap2/Kconfig b/arch/arm/mach-omap2/Kconfig index fcd4e85c4ddc..346fd26f3aa6 100644 --- a/arch/arm/mach-omap2/Kconfig +++ b/arch/arm/mach-omap2/Kconfig @@ -232,10 +232,11 @@ config MACH_OMAP3_PANDORA select OMAP_PACKAGE_CBB select REGULATOR_FIXED_VOLTAGE if REGULATOR -config MACH_OMAP3_TOUCHBOOK +config MACH_TOUCHBOOK bool "OMAP3 Touch Book" depends on ARCH_OMAP3 default y + select OMAP_PACKAGE_CBB config MACH_OMAP_3430SDP bool "OMAP 3430 SDP board" diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile index eb203ec193d0..7706fdfd0252 100644 --- a/arch/arm/mach-omap2/Makefile +++ b/arch/arm/mach-omap2/Makefile @@ -235,7 +235,7 @@ obj-$(CONFIG_MACH_OMAP_3630SDP) += board-zoom-display.o obj-$(CONFIG_MACH_CM_T35) += board-cm-t35.o obj-$(CONFIG_MACH_CM_T3517) += board-cm-t3517.o obj-$(CONFIG_MACH_IGEP0020) += board-igep0020.o -obj-$(CONFIG_MACH_OMAP3_TOUCHBOOK) += board-omap3touchbook.o +obj-$(CONFIG_MACH_TOUCHBOOK) += board-omap3touchbook.o obj-$(CONFIG_MACH_OMAP_4430SDP) += board-4430sdp.o obj-$(CONFIG_MACH_OMAP4_PANDA) += board-omap4panda.o diff --git a/arch/arm/mach-omap2/clock33xx_data.c b/arch/arm/mach-omap2/clock33xx_data.c index 7aa5ecaee5a2..8e06de665b14 100644 --- a/arch/arm/mach-omap2/clock33xx_data.c +++ b/arch/arm/mach-omap2/clock33xx_data.c @@ -1036,13 +1036,13 @@ static struct omap_clk am33xx_clks[] = { CLK(NULL, "mmu_fck", &mmu_fck, CK_AM33XX), CLK(NULL, "smartreflex0_fck", &smartreflex0_fck, CK_AM33XX), CLK(NULL, "smartreflex1_fck", &smartreflex1_fck, CK_AM33XX), - CLK(NULL, "gpt1_fck", &timer1_fck, CK_AM33XX), - CLK(NULL, "gpt2_fck", &timer2_fck, CK_AM33XX), - CLK(NULL, "gpt3_fck", &timer3_fck, CK_AM33XX), - CLK(NULL, "gpt4_fck", &timer4_fck, CK_AM33XX), - CLK(NULL, "gpt5_fck", &timer5_fck, CK_AM33XX), - CLK(NULL, "gpt6_fck", &timer6_fck, CK_AM33XX), - CLK(NULL, "gpt7_fck", &timer7_fck, CK_AM33XX), + CLK(NULL, "timer1_fck", &timer1_fck, CK_AM33XX), + CLK(NULL, "timer2_fck", &timer2_fck, CK_AM33XX), + CLK(NULL, "timer3_fck", &timer3_fck, CK_AM33XX), + CLK(NULL, "timer4_fck", &timer4_fck, CK_AM33XX), + CLK(NULL, "timer5_fck", &timer5_fck, CK_AM33XX), + CLK(NULL, "timer6_fck", &timer6_fck, CK_AM33XX), + CLK(NULL, "timer7_fck", &timer7_fck, CK_AM33XX), CLK(NULL, "usbotg_fck", &usbotg_fck, CK_AM33XX), CLK(NULL, "ieee5000_fck", &ieee5000_fck, CK_AM33XX), CLK(NULL, "wdt1_fck", &wdt1_fck, CK_AM33XX), diff --git a/arch/arm/mach-omap2/clockdomain2xxx_3xxx.c b/arch/arm/mach-omap2/clockdomain2xxx_3xxx.c index a0d68dbecfa3..f99e65cfb862 100644 --- a/arch/arm/mach-omap2/clockdomain2xxx_3xxx.c +++ b/arch/arm/mach-omap2/clockdomain2xxx_3xxx.c @@ -241,6 +241,52 @@ static void omap3_clkdm_deny_idle(struct clockdomain *clkdm) _clkdm_del_autodeps(clkdm); } +static int omap3xxx_clkdm_clk_enable(struct clockdomain *clkdm) +{ + bool hwsup = false; + + if (!clkdm->clktrctrl_mask) + return 0; + + hwsup = omap2_cm_is_clkdm_in_hwsup(clkdm->pwrdm.ptr->prcm_offs, + clkdm->clktrctrl_mask); + + if (hwsup) { + /* Disable HW transitions when we are changing deps */ + _disable_hwsup(clkdm); + _clkdm_add_autodeps(clkdm); + _enable_hwsup(clkdm); + } else { + if (clkdm->flags & CLKDM_CAN_FORCE_WAKEUP) + omap3_clkdm_wakeup(clkdm); + } + + return 0; +} + +static int omap3xxx_clkdm_clk_disable(struct clockdomain *clkdm) +{ + bool hwsup = false; + + if (!clkdm->clktrctrl_mask) + return 0; + + hwsup = omap2_cm_is_clkdm_in_hwsup(clkdm->pwrdm.ptr->prcm_offs, + clkdm->clktrctrl_mask); + + if (hwsup) { + /* Disable HW transitions when we are changing deps */ + _disable_hwsup(clkdm); + _clkdm_del_autodeps(clkdm); + _enable_hwsup(clkdm); + } else { + if (clkdm->flags & CLKDM_CAN_FORCE_SLEEP) + omap3_clkdm_sleep(clkdm); + } + + return 0; +} + struct clkdm_ops omap2_clkdm_operations = { .clkdm_add_wkdep = omap2_clkdm_add_wkdep, .clkdm_del_wkdep = omap2_clkdm_del_wkdep, @@ -267,6 +313,6 @@ struct clkdm_ops omap3_clkdm_operations = { .clkdm_wakeup = omap3_clkdm_wakeup, .clkdm_allow_idle = omap3_clkdm_allow_idle, .clkdm_deny_idle = omap3_clkdm_deny_idle, - .clkdm_clk_enable = omap2_clkdm_clk_enable, - .clkdm_clk_disable = omap2_clkdm_clk_disable, + .clkdm_clk_enable = omap3xxx_clkdm_clk_enable, + .clkdm_clk_disable = omap3xxx_clkdm_clk_disable, }; diff --git a/arch/arm/mach-omap2/cm-regbits-34xx.h b/arch/arm/mach-omap2/cm-regbits-34xx.h index 766338fe4d34..975f6bda0e0b 100644 --- a/arch/arm/mach-omap2/cm-regbits-34xx.h +++ b/arch/arm/mach-omap2/cm-regbits-34xx.h @@ -67,6 +67,7 @@ #define OMAP3430_EN_IVA2_DPLL_MASK (0x7 << 0) /* CM_IDLEST_IVA2 */ +#define OMAP3430_ST_IVA2_SHIFT 0 #define OMAP3430_ST_IVA2_MASK (1 << 0) /* CM_IDLEST_PLL_IVA2 */ diff --git a/arch/arm/mach-omap2/omap-wakeupgen.c b/arch/arm/mach-omap2/omap-wakeupgen.c index b54427dec2a3..ecaad7d371ee 100644 --- a/arch/arm/mach-omap2/omap-wakeupgen.c +++ b/arch/arm/mach-omap2/omap-wakeupgen.c @@ -47,7 +47,7 @@ static void __iomem *wakeupgen_base; static void __iomem *sar_base; static DEFINE_SPINLOCK(wakeupgen_lock); -static unsigned int irq_target_cpu[NR_IRQS]; +static unsigned int irq_target_cpu[MAX_IRQS]; static unsigned int irq_banks = MAX_NR_REG_BANKS; static unsigned int max_irqs = MAX_IRQS; static unsigned int omap_secure_apis; diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c index 80b7359500f1..3615e0d9ee3c 100644 --- a/arch/arm/mach-omap2/omap_hwmod.c +++ b/arch/arm/mach-omap2/omap_hwmod.c @@ -1889,6 +1889,7 @@ static int _enable(struct omap_hwmod *oh) _enable_sysc(oh); } } else { + _omap4_disable_module(oh); _disable_clocks(oh); pr_debug("omap_hwmod: %s: _wait_target_ready: %d\n", oh->name, r); diff --git a/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c b/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c index a1df9d4690f7..b1675e6214d3 100644 --- a/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c +++ b/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c @@ -100,9 +100,9 @@ static struct omap_hwmod omap3xxx_mpu_hwmod = { /* IVA2 (IVA2) */ static struct omap_hwmod_rst_info omap3xxx_iva_resets[] = { - { .name = "logic", .rst_shift = 0 }, - { .name = "seq0", .rst_shift = 1 }, - { .name = "seq1", .rst_shift = 2 }, + { .name = "logic", .rst_shift = 0, .st_shift = 8 }, + { .name = "seq0", .rst_shift = 1, .st_shift = 9 }, + { .name = "seq1", .rst_shift = 2, .st_shift = 10 }, }; static struct omap_hwmod omap3xxx_iva_hwmod = { @@ -112,6 +112,15 @@ static struct omap_hwmod omap3xxx_iva_hwmod = { .rst_lines = omap3xxx_iva_resets, .rst_lines_cnt = ARRAY_SIZE(omap3xxx_iva_resets), .main_clk = "iva2_ck", + .prcm = { + .omap2 = { + .module_offs = OMAP3430_IVA2_MOD, + .prcm_reg_id = 1, + .module_bit = OMAP3430_CM_FCLKEN_IVA2_EN_IVA2_SHIFT, + .idlest_reg_id = 1, + .idlest_idle_bit = OMAP3430_ST_IVA2_SHIFT, + } + }, }; /* timer class */ diff --git a/arch/arm/mach-omap2/omap_hwmod_44xx_data.c b/arch/arm/mach-omap2/omap_hwmod_44xx_data.c index f033f950a232..f9bcb24cd515 100644 --- a/arch/arm/mach-omap2/omap_hwmod_44xx_data.c +++ b/arch/arm/mach-omap2/omap_hwmod_44xx_data.c @@ -4209,7 +4209,7 @@ static struct omap_hwmod_ocp_if omap44xx_dsp__iva = { }; /* dsp -> sl2if */ -static struct omap_hwmod_ocp_if omap44xx_dsp__sl2if = { +static struct omap_hwmod_ocp_if __maybe_unused omap44xx_dsp__sl2if = { .master = &omap44xx_dsp_hwmod, .slave = &omap44xx_sl2if_hwmod, .clk = "dpll_iva_m5x2_ck", @@ -4827,7 +4827,7 @@ static struct omap_hwmod_ocp_if omap44xx_l3_main_2__iss = { }; /* iva -> sl2if */ -static struct omap_hwmod_ocp_if omap44xx_iva__sl2if = { +static struct omap_hwmod_ocp_if __maybe_unused omap44xx_iva__sl2if = { .master = &omap44xx_iva_hwmod, .slave = &omap44xx_sl2if_hwmod, .clk = "dpll_iva_m5x2_ck", @@ -5361,7 +5361,7 @@ static struct omap_hwmod_ocp_if omap44xx_l4_wkup__scrm = { }; /* l3_main_2 -> sl2if */ -static struct omap_hwmod_ocp_if omap44xx_l3_main_2__sl2if = { +static struct omap_hwmod_ocp_if __maybe_unused omap44xx_l3_main_2__sl2if = { .master = &omap44xx_l3_main_2_hwmod, .slave = &omap44xx_sl2if_hwmod, .clk = "l3_div_ck", @@ -6031,7 +6031,7 @@ static struct omap_hwmod_ocp_if *omap44xx_hwmod_ocp_ifs[] __initdata = { &omap44xx_l4_abe__dmic, &omap44xx_l4_abe__dmic_dma, &omap44xx_dsp__iva, - &omap44xx_dsp__sl2if, + /* &omap44xx_dsp__sl2if, */ &omap44xx_l4_cfg__dsp, &omap44xx_l3_main_2__dss, &omap44xx_l4_per__dss, @@ -6067,7 +6067,7 @@ static struct omap_hwmod_ocp_if *omap44xx_hwmod_ocp_ifs[] __initdata = { &omap44xx_l4_per__i2c4, &omap44xx_l3_main_2__ipu, &omap44xx_l3_main_2__iss, - &omap44xx_iva__sl2if, + /* &omap44xx_iva__sl2if, */ &omap44xx_l3_main_2__iva, &omap44xx_l4_wkup__kbd, &omap44xx_l4_cfg__mailbox, @@ -6098,7 +6098,7 @@ static struct omap_hwmod_ocp_if *omap44xx_hwmod_ocp_ifs[] __initdata = { &omap44xx_l4_cfg__cm_core, &omap44xx_l4_wkup__prm, &omap44xx_l4_wkup__scrm, - &omap44xx_l3_main_2__sl2if, + /* &omap44xx_l3_main_2__sl2if, */ &omap44xx_l4_abe__slimbus1, &omap44xx_l4_abe__slimbus1_dma, &omap44xx_l4_per__slimbus2, diff --git a/arch/arm/mach-omap2/timer.c b/arch/arm/mach-omap2/timer.c index e17cf974d16c..5214d5bfba27 100644 --- a/arch/arm/mach-omap2/timer.c +++ b/arch/arm/mach-omap2/timer.c @@ -262,6 +262,7 @@ static u32 notrace dmtimer_read_sched_clock(void) return 0; } +#ifdef CONFIG_OMAP_32K_TIMER /* Setup free-running counter for clocksource */ static int __init omap2_sync32k_clocksource_init(void) { @@ -301,6 +302,12 @@ static int __init omap2_sync32k_clocksource_init(void) return ret; } +#else +static inline int omap2_sync32k_clocksource_init(void) +{ + return -ENODEV; +} +#endif static void __init omap2_gptimer_clocksource_init(int gptimer_id, const char *fck_source) diff --git a/arch/arm/mach-tegra/Kconfig b/arch/arm/mach-tegra/Kconfig index b3226f80c985..5f3c03b61f8e 100644 --- a/arch/arm/mach-tegra/Kconfig +++ b/arch/arm/mach-tegra/Kconfig @@ -110,13 +110,6 @@ config TEGRA_DEBUG_UART_AUTO_SCRATCH endchoice -config TEGRA_SYSTEM_DMA - bool "Enable system DMA driver for NVIDIA Tegra SoCs" - default y - help - Adds system DMA functionality for NVIDIA Tegra SoCs, used by - several Tegra device drivers - config TEGRA_EMC_SCALING_ENABLE bool "Enable scaling the memory frequency" diff --git a/arch/arm/mach-tegra/Makefile b/arch/arm/mach-tegra/Makefile index 56065acbd816..0974ace45558 100644 --- a/arch/arm/mach-tegra/Makefile +++ b/arch/arm/mach-tegra/Makefile @@ -18,7 +18,6 @@ obj-$(CONFIG_ARCH_TEGRA_3x_SOC) += tegra30_clocks.o obj-$(CONFIG_SMP) += platsmp.o headsmp.o obj-$(CONFIG_SMP) += reset.o obj-$(CONFIG_HOTPLUG_CPU) += hotplug.o -obj-$(CONFIG_TEGRA_SYSTEM_DMA) += dma.o obj-$(CONFIG_CPU_FREQ) += cpu-tegra.o obj-$(CONFIG_TEGRA_PCI) += pcie.o obj-$(CONFIG_USB_SUPPORT) += usb_phy.o diff --git a/arch/arm/mach-tegra/apbio.c b/arch/arm/mach-tegra/apbio.c index 643a37809a15..b5015d0f1912 100644 --- a/arch/arm/mach-tegra/apbio.c +++ b/arch/arm/mach-tegra/apbio.c @@ -28,7 +28,7 @@ #include "apbio.h" -#if defined(CONFIG_TEGRA_SYSTEM_DMA) || defined(CONFIG_TEGRA20_APB_DMA) +#if defined(CONFIG_TEGRA20_APB_DMA) static DEFINE_MUTEX(tegra_apb_dma_lock); static u32 *tegra_apb_bb; static dma_addr_t tegra_apb_bb_phys; @@ -37,121 +37,6 @@ static DECLARE_COMPLETION(tegra_apb_wait); static u32 tegra_apb_readl_direct(unsigned long offset); static void tegra_apb_writel_direct(u32 value, unsigned long offset); -#if defined(CONFIG_TEGRA_SYSTEM_DMA) -static struct tegra_dma_channel *tegra_apb_dma; - -bool tegra_apb_init(void) -{ - struct tegra_dma_channel *ch; - - mutex_lock(&tegra_apb_dma_lock); - - /* Check to see if we raced to setup */ - if (tegra_apb_dma) - goto out; - - ch = tegra_dma_allocate_channel(TEGRA_DMA_MODE_ONESHOT | - TEGRA_DMA_SHARED); - - if (!ch) - goto out_fail; - - tegra_apb_bb = dma_alloc_coherent(NULL, sizeof(u32), - &tegra_apb_bb_phys, GFP_KERNEL); - if (!tegra_apb_bb) { - pr_err("%s: can not allocate bounce buffer\n", __func__); - tegra_dma_free_channel(ch); - goto out_fail; - } - - tegra_apb_dma = ch; -out: - mutex_unlock(&tegra_apb_dma_lock); - return true; - -out_fail: - mutex_unlock(&tegra_apb_dma_lock); - return false; -} - -static void apb_dma_complete(struct tegra_dma_req *req) -{ - complete(&tegra_apb_wait); -} - -static u32 tegra_apb_readl_using_dma(unsigned long offset) -{ - struct tegra_dma_req req; - int ret; - - if (!tegra_apb_dma && !tegra_apb_init()) - return tegra_apb_readl_direct(offset); - - mutex_lock(&tegra_apb_dma_lock); - req.complete = apb_dma_complete; - req.to_memory = 1; - req.dest_addr = tegra_apb_bb_phys; - req.dest_bus_width = 32; - req.dest_wrap = 1; - req.source_addr = offset; - req.source_bus_width = 32; - req.source_wrap = 4; - req.req_sel = TEGRA_DMA_REQ_SEL_CNTR; - req.size = 4; - - INIT_COMPLETION(tegra_apb_wait); - - tegra_dma_enqueue_req(tegra_apb_dma, &req); - - ret = wait_for_completion_timeout(&tegra_apb_wait, - msecs_to_jiffies(50)); - - if (WARN(ret == 0, "apb read dma timed out")) { - tegra_dma_dequeue_req(tegra_apb_dma, &req); - *(u32 *)tegra_apb_bb = 0; - } - - mutex_unlock(&tegra_apb_dma_lock); - return *((u32 *)tegra_apb_bb); -} - -static void tegra_apb_writel_using_dma(u32 value, unsigned long offset) -{ - struct tegra_dma_req req; - int ret; - - if (!tegra_apb_dma && !tegra_apb_init()) { - tegra_apb_writel_direct(value, offset); - return; - } - - mutex_lock(&tegra_apb_dma_lock); - *((u32 *)tegra_apb_bb) = value; - req.complete = apb_dma_complete; - req.to_memory = 0; - req.dest_addr = offset; - req.dest_wrap = 4; - req.dest_bus_width = 32; - req.source_addr = tegra_apb_bb_phys; - req.source_bus_width = 32; - req.source_wrap = 1; - req.req_sel = TEGRA_DMA_REQ_SEL_CNTR; - req.size = 4; - - INIT_COMPLETION(tegra_apb_wait); - - tegra_dma_enqueue_req(tegra_apb_dma, &req); - - ret = wait_for_completion_timeout(&tegra_apb_wait, - msecs_to_jiffies(50)); - - if (WARN(ret == 0, "apb write dma timed out")) - tegra_dma_dequeue_req(tegra_apb_dma, &req); - - mutex_unlock(&tegra_apb_dma_lock); -} - -#else static struct dma_chan *tegra_apb_dma_chan; static struct dma_slave_config dma_sconfig; @@ -279,7 +164,6 @@ static void tegra_apb_writel_using_dma(u32 value, unsigned long offset) pr_err("error in writing offset 0x%08lx using dma\n", offset); mutex_unlock(&tegra_apb_dma_lock); } -#endif #else #define tegra_apb_readl_using_dma tegra_apb_readl_direct #define tegra_apb_writel_using_dma tegra_apb_writel_direct diff --git a/arch/arm/mach-tegra/dma.c b/arch/arm/mach-tegra/dma.c deleted file mode 100644 index 29c5114d607c..000000000000 --- a/arch/arm/mach-tegra/dma.c +++ /dev/null @@ -1,823 +0,0 @@ -/* - * arch/arm/mach-tegra/dma.c - * - * System DMA driver for NVIDIA Tegra SoCs - * - * Copyright (c) 2008-2009, NVIDIA Corporation. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. - */ - -#include <linux/io.h> -#include <linux/interrupt.h> -#include <linux/module.h> -#include <linux/spinlock.h> -#include <linux/err.h> -#include <linux/irq.h> -#include <linux/delay.h> -#include <linux/clk.h> -#include <mach/dma.h> -#include <mach/irqs.h> -#include <mach/iomap.h> -#include <mach/suspend.h> - -#include "apbio.h" - -#define APB_DMA_GEN 0x000 -#define GEN_ENABLE (1<<31) - -#define APB_DMA_CNTRL 0x010 - -#define APB_DMA_IRQ_MASK 0x01c - -#define APB_DMA_IRQ_MASK_SET 0x020 - -#define APB_DMA_CHAN_CSR 0x000 -#define CSR_ENB (1<<31) -#define CSR_IE_EOC (1<<30) -#define CSR_HOLD (1<<29) -#define CSR_DIR (1<<28) -#define CSR_ONCE (1<<27) -#define CSR_FLOW (1<<21) -#define CSR_REQ_SEL_SHIFT 16 -#define CSR_WCOUNT_SHIFT 2 -#define CSR_WCOUNT_MASK 0xFFFC - -#define APB_DMA_CHAN_STA 0x004 -#define STA_BUSY (1<<31) -#define STA_ISE_EOC (1<<30) -#define STA_HALT (1<<29) -#define STA_PING_PONG (1<<28) -#define STA_COUNT_SHIFT 2 -#define STA_COUNT_MASK 0xFFFC - -#define APB_DMA_CHAN_AHB_PTR 0x010 - -#define APB_DMA_CHAN_AHB_SEQ 0x014 -#define AHB_SEQ_INTR_ENB (1<<31) -#define AHB_SEQ_BUS_WIDTH_SHIFT 28 -#define AHB_SEQ_BUS_WIDTH_MASK (0x7<<AHB_SEQ_BUS_WIDTH_SHIFT) -#define AHB_SEQ_BUS_WIDTH_8 (0<<AHB_SEQ_BUS_WIDTH_SHIFT) -#define AHB_SEQ_BUS_WIDTH_16 (1<<AHB_SEQ_BUS_WIDTH_SHIFT) -#define AHB_SEQ_BUS_WIDTH_32 (2<<AHB_SEQ_BUS_WIDTH_SHIFT) -#define AHB_SEQ_BUS_WIDTH_64 (3<<AHB_SEQ_BUS_WIDTH_SHIFT) -#define AHB_SEQ_BUS_WIDTH_128 (4<<AHB_SEQ_BUS_WIDTH_SHIFT) -#define AHB_SEQ_DATA_SWAP (1<<27) -#define AHB_SEQ_BURST_MASK (0x7<<24) -#define AHB_SEQ_BURST_1 (4<<24) -#define AHB_SEQ_BURST_4 (5<<24) -#define AHB_SEQ_BURST_8 (6<<24) -#define AHB_SEQ_DBL_BUF (1<<19) -#define AHB_SEQ_WRAP_SHIFT 16 -#define AHB_SEQ_WRAP_MASK (0x7<<AHB_SEQ_WRAP_SHIFT) - -#define APB_DMA_CHAN_APB_PTR 0x018 - -#define APB_DMA_CHAN_APB_SEQ 0x01c -#define APB_SEQ_BUS_WIDTH_SHIFT 28 -#define APB_SEQ_BUS_WIDTH_MASK (0x7<<APB_SEQ_BUS_WIDTH_SHIFT) -#define APB_SEQ_BUS_WIDTH_8 (0<<APB_SEQ_BUS_WIDTH_SHIFT) -#define APB_SEQ_BUS_WIDTH_16 (1<<APB_SEQ_BUS_WIDTH_SHIFT) -#define APB_SEQ_BUS_WIDTH_32 (2<<APB_SEQ_BUS_WIDTH_SHIFT) -#define APB_SEQ_BUS_WIDTH_64 (3<<APB_SEQ_BUS_WIDTH_SHIFT) -#define APB_SEQ_BUS_WIDTH_128 (4<<APB_SEQ_BUS_WIDTH_SHIFT) -#define APB_SEQ_DATA_SWAP (1<<27) -#define APB_SEQ_WRAP_SHIFT 16 -#define APB_SEQ_WRAP_MASK (0x7<<APB_SEQ_WRAP_SHIFT) - -#define TEGRA_SYSTEM_DMA_CH_NR 16 -#define TEGRA_SYSTEM_DMA_AVP_CH_NUM 4 -#define TEGRA_SYSTEM_DMA_CH_MIN 0 -#define TEGRA_SYSTEM_DMA_CH_MAX \ - (TEGRA_SYSTEM_DMA_CH_NR - TEGRA_SYSTEM_DMA_AVP_CH_NUM - 1) - -#define NV_DMA_MAX_TRASFER_SIZE 0x10000 - -static const unsigned int ahb_addr_wrap_table[8] = { - 0, 32, 64, 128, 256, 512, 1024, 2048 -}; - -static const unsigned int apb_addr_wrap_table[8] = { - 0, 1, 2, 4, 8, 16, 32, 64 -}; - -static const unsigned int bus_width_table[5] = { - 8, 16, 32, 64, 128 -}; - -#define TEGRA_DMA_NAME_SIZE 16 -struct tegra_dma_channel { - struct list_head list; - int id; - spinlock_t lock; - char name[TEGRA_DMA_NAME_SIZE]; - void __iomem *addr; - int mode; - int irq; - int req_transfer_count; -}; - -#define NV_DMA_MAX_CHANNELS 32 - -static bool tegra_dma_initialized; -static DEFINE_MUTEX(tegra_dma_lock); -static DEFINE_SPINLOCK(enable_lock); - -static DECLARE_BITMAP(channel_usage, NV_DMA_MAX_CHANNELS); -static struct tegra_dma_channel dma_channels[NV_DMA_MAX_CHANNELS]; - -static void tegra_dma_update_hw(struct tegra_dma_channel *ch, - struct tegra_dma_req *req); -static void tegra_dma_update_hw_partial(struct tegra_dma_channel *ch, - struct tegra_dma_req *req); -static void tegra_dma_stop(struct tegra_dma_channel *ch); - -void tegra_dma_flush(struct tegra_dma_channel *ch) -{ -} -EXPORT_SYMBOL(tegra_dma_flush); - -void tegra_dma_dequeue(struct tegra_dma_channel *ch) -{ - struct tegra_dma_req *req; - - if (tegra_dma_is_empty(ch)) - return; - - req = list_entry(ch->list.next, typeof(*req), node); - - tegra_dma_dequeue_req(ch, req); - return; -} - -static void tegra_dma_stop(struct tegra_dma_channel *ch) -{ - u32 csr; - u32 status; - - csr = readl(ch->addr + APB_DMA_CHAN_CSR); - csr &= ~CSR_IE_EOC; - writel(csr, ch->addr + APB_DMA_CHAN_CSR); - - csr &= ~CSR_ENB; - writel(csr, ch->addr + APB_DMA_CHAN_CSR); - - status = readl(ch->addr + APB_DMA_CHAN_STA); - if (status & STA_ISE_EOC) - writel(status, ch->addr + APB_DMA_CHAN_STA); -} - -static int tegra_dma_cancel(struct tegra_dma_channel *ch) -{ - unsigned long irq_flags; - - spin_lock_irqsave(&ch->lock, irq_flags); - while (!list_empty(&ch->list)) - list_del(ch->list.next); - - tegra_dma_stop(ch); - - spin_unlock_irqrestore(&ch->lock, irq_flags); - return 0; -} - -static unsigned int get_channel_status(struct tegra_dma_channel *ch, - struct tegra_dma_req *req, bool is_stop_dma) -{ - void __iomem *addr = IO_ADDRESS(TEGRA_APB_DMA_BASE); - unsigned int status; - - if (is_stop_dma) { - /* - * STOP the DMA and get the transfer count. - * Getting the transfer count is tricky. - * - Globally disable DMA on all channels - * - Read the channel's status register to know the number - * of pending bytes to be transfered. - * - Stop the dma channel - * - Globally re-enable DMA to resume other transfers - */ - spin_lock(&enable_lock); - writel(0, addr + APB_DMA_GEN); - udelay(20); - status = readl(ch->addr + APB_DMA_CHAN_STA); - tegra_dma_stop(ch); - writel(GEN_ENABLE, addr + APB_DMA_GEN); - spin_unlock(&enable_lock); - if (status & STA_ISE_EOC) { - pr_err("Got Dma Int here clearing"); - writel(status, ch->addr + APB_DMA_CHAN_STA); - } - req->status = TEGRA_DMA_REQ_ERROR_ABORTED; - } else { - status = readl(ch->addr + APB_DMA_CHAN_STA); - } - return status; -} - -/* should be called with the channel lock held */ -static unsigned int dma_active_count(struct tegra_dma_channel *ch, - struct tegra_dma_req *req, unsigned int status) -{ - unsigned int to_transfer; - unsigned int req_transfer_count; - unsigned int bytes_transferred; - - to_transfer = ((status & STA_COUNT_MASK) >> STA_COUNT_SHIFT) + 1; - req_transfer_count = ch->req_transfer_count + 1; - bytes_transferred = req_transfer_count; - if (status & STA_BUSY) - bytes_transferred -= to_transfer; - /* - * In continuous transfer mode, DMA only tracks the count of the - * half DMA buffer. So, if the DMA already finished half the DMA - * then add the half buffer to the completed count. - */ - if (ch->mode & TEGRA_DMA_MODE_CONTINOUS) { - if (req->buffer_status == TEGRA_DMA_REQ_BUF_STATUS_HALF_FULL) - bytes_transferred += req_transfer_count; - if (status & STA_ISE_EOC) - bytes_transferred += req_transfer_count; - } - bytes_transferred *= 4; - return bytes_transferred; -} - -int tegra_dma_dequeue_req(struct tegra_dma_channel *ch, - struct tegra_dma_req *_req) -{ - unsigned int status; - struct tegra_dma_req *req = NULL; - int found = 0; - unsigned long irq_flags; - int stop = 0; - - spin_lock_irqsave(&ch->lock, irq_flags); - - if (list_entry(ch->list.next, struct tegra_dma_req, node) == _req) - stop = 1; - - list_for_each_entry(req, &ch->list, node) { - if (req == _req) { - list_del(&req->node); - found = 1; - break; - } - } - if (!found) { - spin_unlock_irqrestore(&ch->lock, irq_flags); - return 0; - } - - if (!stop) - goto skip_stop_dma; - - status = get_channel_status(ch, req, true); - req->bytes_transferred = dma_active_count(ch, req, status); - - if (!list_empty(&ch->list)) { - /* if the list is not empty, queue the next request */ - struct tegra_dma_req *next_req; - next_req = list_entry(ch->list.next, - typeof(*next_req), node); - tegra_dma_update_hw(ch, next_req); - } - -skip_stop_dma: - req->status = -TEGRA_DMA_REQ_ERROR_ABORTED; - - spin_unlock_irqrestore(&ch->lock, irq_flags); - - /* Callback should be called without any lock */ - req->complete(req); - return 0; -} -EXPORT_SYMBOL(tegra_dma_dequeue_req); - -bool tegra_dma_is_empty(struct tegra_dma_channel *ch) -{ - unsigned long irq_flags; - bool is_empty; - - spin_lock_irqsave(&ch->lock, irq_flags); - if (list_empty(&ch->list)) - is_empty = true; - else - is_empty = false; - spin_unlock_irqrestore(&ch->lock, irq_flags); - return is_empty; -} -EXPORT_SYMBOL(tegra_dma_is_empty); - -bool tegra_dma_is_req_inflight(struct tegra_dma_channel *ch, - struct tegra_dma_req *_req) -{ - unsigned long irq_flags; - struct tegra_dma_req *req; - - spin_lock_irqsave(&ch->lock, irq_flags); - list_for_each_entry(req, &ch->list, node) { - if (req == _req) { - spin_unlock_irqrestore(&ch->lock, irq_flags); - return true; - } - } - spin_unlock_irqrestore(&ch->lock, irq_flags); - return false; -} -EXPORT_SYMBOL(tegra_dma_is_req_inflight); - -int tegra_dma_enqueue_req(struct tegra_dma_channel *ch, - struct tegra_dma_req *req) -{ - unsigned long irq_flags; - struct tegra_dma_req *_req; - int start_dma = 0; - - if (req->size > NV_DMA_MAX_TRASFER_SIZE || - req->source_addr & 0x3 || req->dest_addr & 0x3) { - pr_err("Invalid DMA request for channel %d\n", ch->id); - return -EINVAL; - } - - spin_lock_irqsave(&ch->lock, irq_flags); - - list_for_each_entry(_req, &ch->list, node) { - if (req == _req) { - spin_unlock_irqrestore(&ch->lock, irq_flags); - return -EEXIST; - } - } - - req->bytes_transferred = 0; - req->status = 0; - req->buffer_status = 0; - if (list_empty(&ch->list)) - start_dma = 1; - - list_add_tail(&req->node, &ch->list); - - if (start_dma) - tegra_dma_update_hw(ch, req); - - spin_unlock_irqrestore(&ch->lock, irq_flags); - - return 0; -} -EXPORT_SYMBOL(tegra_dma_enqueue_req); - -struct tegra_dma_channel *tegra_dma_allocate_channel(int mode) -{ - int channel; - struct tegra_dma_channel *ch = NULL; - - if (!tegra_dma_initialized) - return NULL; - - mutex_lock(&tegra_dma_lock); - - /* first channel is the shared channel */ - if (mode & TEGRA_DMA_SHARED) { - channel = TEGRA_SYSTEM_DMA_CH_MIN; - } else { - channel = find_first_zero_bit(channel_usage, - ARRAY_SIZE(dma_channels)); - if (channel >= ARRAY_SIZE(dma_channels)) - goto out; - } - __set_bit(channel, channel_usage); - ch = &dma_channels[channel]; - ch->mode = mode; - -out: - mutex_unlock(&tegra_dma_lock); - return ch; -} -EXPORT_SYMBOL(tegra_dma_allocate_channel); - -void tegra_dma_free_channel(struct tegra_dma_channel *ch) -{ - if (ch->mode & TEGRA_DMA_SHARED) - return; - tegra_dma_cancel(ch); - mutex_lock(&tegra_dma_lock); - __clear_bit(ch->id, channel_usage); - mutex_unlock(&tegra_dma_lock); -} -EXPORT_SYMBOL(tegra_dma_free_channel); - -static void tegra_dma_update_hw_partial(struct tegra_dma_channel *ch, - struct tegra_dma_req *req) -{ - u32 apb_ptr; - u32 ahb_ptr; - - if (req->to_memory) { - apb_ptr = req->source_addr; - ahb_ptr = req->dest_addr; - } else { - apb_ptr = req->dest_addr; - ahb_ptr = req->source_addr; - } - writel(apb_ptr, ch->addr + APB_DMA_CHAN_APB_PTR); - writel(ahb_ptr, ch->addr + APB_DMA_CHAN_AHB_PTR); - - req->status = TEGRA_DMA_REQ_INFLIGHT; - return; -} - -static void tegra_dma_update_hw(struct tegra_dma_channel *ch, - struct tegra_dma_req *req) -{ - int ahb_addr_wrap; - int apb_addr_wrap; - int ahb_bus_width; - int apb_bus_width; - int index; - - u32 ahb_seq; - u32 apb_seq; - u32 ahb_ptr; - u32 apb_ptr; - u32 csr; - - csr = CSR_IE_EOC | CSR_FLOW; - ahb_seq = AHB_SEQ_INTR_ENB | AHB_SEQ_BURST_1; - apb_seq = 0; - - csr |= req->req_sel << CSR_REQ_SEL_SHIFT; - - /* One shot mode is always single buffered, - * continuous mode is always double buffered - * */ - if (ch->mode & TEGRA_DMA_MODE_ONESHOT) { - csr |= CSR_ONCE; - ch->req_transfer_count = (req->size >> 2) - 1; - } else { - ahb_seq |= AHB_SEQ_DBL_BUF; - - /* In double buffered mode, we set the size to half the - * requested size and interrupt when half the buffer - * is full */ - ch->req_transfer_count = (req->size >> 3) - 1; - } - - csr |= ch->req_transfer_count << CSR_WCOUNT_SHIFT; - - if (req->to_memory) { - apb_ptr = req->source_addr; - ahb_ptr = req->dest_addr; - - apb_addr_wrap = req->source_wrap; - ahb_addr_wrap = req->dest_wrap; - apb_bus_width = req->source_bus_width; - ahb_bus_width = req->dest_bus_width; - - } else { - csr |= CSR_DIR; - apb_ptr = req->dest_addr; - ahb_ptr = req->source_addr; - - apb_addr_wrap = req->dest_wrap; - ahb_addr_wrap = req->source_wrap; - apb_bus_width = req->dest_bus_width; - ahb_bus_width = req->source_bus_width; - } - - apb_addr_wrap >>= 2; - ahb_addr_wrap >>= 2; - - /* set address wrap for APB size */ - index = 0; - do { - if (apb_addr_wrap_table[index] == apb_addr_wrap) - break; - index++; - } while (index < ARRAY_SIZE(apb_addr_wrap_table)); - BUG_ON(index == ARRAY_SIZE(apb_addr_wrap_table)); - apb_seq |= index << APB_SEQ_WRAP_SHIFT; - - /* set address wrap for AHB size */ - index = 0; - do { - if (ahb_addr_wrap_table[index] == ahb_addr_wrap) - break; - index++; - } while (index < ARRAY_SIZE(ahb_addr_wrap_table)); - BUG_ON(index == ARRAY_SIZE(ahb_addr_wrap_table)); - ahb_seq |= index << AHB_SEQ_WRAP_SHIFT; - - for (index = 0; index < ARRAY_SIZE(bus_width_table); index++) { - if (bus_width_table[index] == ahb_bus_width) - break; - } - BUG_ON(index == ARRAY_SIZE(bus_width_table)); - ahb_seq |= index << AHB_SEQ_BUS_WIDTH_SHIFT; - - for (index = 0; index < ARRAY_SIZE(bus_width_table); index++) { - if (bus_width_table[index] == apb_bus_width) - break; - } - BUG_ON(index == ARRAY_SIZE(bus_width_table)); - apb_seq |= index << APB_SEQ_BUS_WIDTH_SHIFT; - - writel(csr, ch->addr + APB_DMA_CHAN_CSR); - writel(apb_seq, ch->addr + APB_DMA_CHAN_APB_SEQ); - writel(apb_ptr, ch->addr + APB_DMA_CHAN_APB_PTR); - writel(ahb_seq, ch->addr + APB_DMA_CHAN_AHB_SEQ); - writel(ahb_ptr, ch->addr + APB_DMA_CHAN_AHB_PTR); - - csr |= CSR_ENB; - writel(csr, ch->addr + APB_DMA_CHAN_CSR); - - req->status = TEGRA_DMA_REQ_INFLIGHT; -} - -static void handle_oneshot_dma(struct tegra_dma_channel *ch) -{ - struct tegra_dma_req *req; - unsigned long irq_flags; - - spin_lock_irqsave(&ch->lock, irq_flags); - if (list_empty(&ch->list)) { - spin_unlock_irqrestore(&ch->lock, irq_flags); - return; - } - - req = list_entry(ch->list.next, typeof(*req), node); - if (req) { - int bytes_transferred; - - bytes_transferred = ch->req_transfer_count; - bytes_transferred += 1; - bytes_transferred <<= 2; - - list_del(&req->node); - req->bytes_transferred = bytes_transferred; - req->status = TEGRA_DMA_REQ_SUCCESS; - - spin_unlock_irqrestore(&ch->lock, irq_flags); - /* Callback should be called without any lock */ - pr_debug("%s: transferred %d bytes\n", __func__, - req->bytes_transferred); - req->complete(req); - spin_lock_irqsave(&ch->lock, irq_flags); - } - - if (!list_empty(&ch->list)) { - req = list_entry(ch->list.next, typeof(*req), node); - /* the complete function we just called may have enqueued - another req, in which case dma has already started */ - if (req->status != TEGRA_DMA_REQ_INFLIGHT) - tegra_dma_update_hw(ch, req); - } - spin_unlock_irqrestore(&ch->lock, irq_flags); -} - -static void handle_continuous_dma(struct tegra_dma_channel *ch) -{ - struct tegra_dma_req *req; - unsigned long irq_flags; - - spin_lock_irqsave(&ch->lock, irq_flags); - if (list_empty(&ch->list)) { - spin_unlock_irqrestore(&ch->lock, irq_flags); - return; - } - - req = list_entry(ch->list.next, typeof(*req), node); - if (req) { - if (req->buffer_status == TEGRA_DMA_REQ_BUF_STATUS_EMPTY) { - bool is_dma_ping_complete; - is_dma_ping_complete = (readl(ch->addr + APB_DMA_CHAN_STA) - & STA_PING_PONG) ? true : false; - if (req->to_memory) - is_dma_ping_complete = !is_dma_ping_complete; - /* Out of sync - Release current buffer */ - if (!is_dma_ping_complete) { - int bytes_transferred; - - bytes_transferred = ch->req_transfer_count; - bytes_transferred += 1; - bytes_transferred <<= 3; - req->buffer_status = TEGRA_DMA_REQ_BUF_STATUS_FULL; - req->bytes_transferred = bytes_transferred; - req->status = TEGRA_DMA_REQ_SUCCESS; - tegra_dma_stop(ch); - - if (!list_is_last(&req->node, &ch->list)) { - struct tegra_dma_req *next_req; - - next_req = list_entry(req->node.next, - typeof(*next_req), node); - tegra_dma_update_hw(ch, next_req); - } - - list_del(&req->node); - - /* DMA lock is NOT held when callbak is called */ - spin_unlock_irqrestore(&ch->lock, irq_flags); - req->complete(req); - return; - } - /* Load the next request into the hardware, if available - * */ - if (!list_is_last(&req->node, &ch->list)) { - struct tegra_dma_req *next_req; - - next_req = list_entry(req->node.next, - typeof(*next_req), node); - tegra_dma_update_hw_partial(ch, next_req); - } - req->buffer_status = TEGRA_DMA_REQ_BUF_STATUS_HALF_FULL; - req->status = TEGRA_DMA_REQ_SUCCESS; - /* DMA lock is NOT held when callback is called */ - spin_unlock_irqrestore(&ch->lock, irq_flags); - if (likely(req->threshold)) - req->threshold(req); - return; - - } else if (req->buffer_status == - TEGRA_DMA_REQ_BUF_STATUS_HALF_FULL) { - /* Callback when the buffer is completely full (i.e on - * the second interrupt */ - int bytes_transferred; - - bytes_transferred = ch->req_transfer_count; - bytes_transferred += 1; - bytes_transferred <<= 3; - - req->buffer_status = TEGRA_DMA_REQ_BUF_STATUS_FULL; - req->bytes_transferred = bytes_transferred; - req->status = TEGRA_DMA_REQ_SUCCESS; - list_del(&req->node); - - /* DMA lock is NOT held when callbak is called */ - spin_unlock_irqrestore(&ch->lock, irq_flags); - req->complete(req); - return; - - } else { - BUG(); - } - } - spin_unlock_irqrestore(&ch->lock, irq_flags); -} - -static irqreturn_t dma_isr(int irq, void *data) -{ - struct tegra_dma_channel *ch = data; - unsigned long status; - - status = readl(ch->addr + APB_DMA_CHAN_STA); - if (status & STA_ISE_EOC) - writel(status, ch->addr + APB_DMA_CHAN_STA); - else { - pr_warning("Got a spurious ISR for DMA channel %d\n", ch->id); - return IRQ_HANDLED; - } - return IRQ_WAKE_THREAD; -} - -static irqreturn_t dma_thread_fn(int irq, void *data) -{ - struct tegra_dma_channel *ch = data; - - if (ch->mode & TEGRA_DMA_MODE_ONESHOT) - handle_oneshot_dma(ch); - else - handle_continuous_dma(ch); - - - return IRQ_HANDLED; -} - -int __init tegra_dma_init(void) -{ - int ret = 0; - int i; - unsigned int irq; - void __iomem *addr; - struct clk *c; - - bitmap_fill(channel_usage, NV_DMA_MAX_CHANNELS); - - c = clk_get_sys("tegra-apbdma", NULL); - if (IS_ERR(c)) { - pr_err("Unable to get clock for APB DMA\n"); - ret = PTR_ERR(c); - goto fail; - } - ret = clk_prepare_enable(c); - if (ret != 0) { - pr_err("Unable to enable clock for APB DMA\n"); - goto fail; - } - - addr = IO_ADDRESS(TEGRA_APB_DMA_BASE); - writel(GEN_ENABLE, addr + APB_DMA_GEN); - writel(0, addr + APB_DMA_CNTRL); - writel(0xFFFFFFFFul >> (31 - TEGRA_SYSTEM_DMA_CH_MAX), - addr + APB_DMA_IRQ_MASK_SET); - - for (i = TEGRA_SYSTEM_DMA_CH_MIN; i <= TEGRA_SYSTEM_DMA_CH_MAX; i++) { - struct tegra_dma_channel *ch = &dma_channels[i]; - - ch->id = i; - snprintf(ch->name, TEGRA_DMA_NAME_SIZE, "dma_channel_%d", i); - - ch->addr = IO_ADDRESS(TEGRA_APB_DMA_CH0_BASE + - TEGRA_APB_DMA_CH0_SIZE * i); - - spin_lock_init(&ch->lock); - INIT_LIST_HEAD(&ch->list); - - irq = INT_APB_DMA_CH0 + i; - ret = request_threaded_irq(irq, dma_isr, dma_thread_fn, 0, - dma_channels[i].name, ch); - if (ret) { - pr_err("Failed to register IRQ %d for DMA %d\n", - irq, i); - goto fail; - } - ch->irq = irq; - - __clear_bit(i, channel_usage); - } - /* mark the shared channel allocated */ - __set_bit(TEGRA_SYSTEM_DMA_CH_MIN, channel_usage); - - tegra_dma_initialized = true; - - return 0; -fail: - writel(0, addr + APB_DMA_GEN); - for (i = TEGRA_SYSTEM_DMA_CH_MIN; i <= TEGRA_SYSTEM_DMA_CH_MAX; i++) { - struct tegra_dma_channel *ch = &dma_channels[i]; - if (ch->irq) - free_irq(ch->irq, ch); - } - return ret; -} -postcore_initcall(tegra_dma_init); - -#ifdef CONFIG_PM -static u32 apb_dma[5*TEGRA_SYSTEM_DMA_CH_NR + 3]; - -void tegra_dma_suspend(void) -{ - void __iomem *addr = IO_ADDRESS(TEGRA_APB_DMA_BASE); - u32 *ctx = apb_dma; - int i; - - *ctx++ = readl(addr + APB_DMA_GEN); - *ctx++ = readl(addr + APB_DMA_CNTRL); - *ctx++ = readl(addr + APB_DMA_IRQ_MASK); - - for (i = 0; i < TEGRA_SYSTEM_DMA_CH_NR; i++) { - addr = IO_ADDRESS(TEGRA_APB_DMA_CH0_BASE + - TEGRA_APB_DMA_CH0_SIZE * i); - - *ctx++ = readl(addr + APB_DMA_CHAN_CSR); - *ctx++ = readl(addr + APB_DMA_CHAN_AHB_PTR); - *ctx++ = readl(addr + APB_DMA_CHAN_AHB_SEQ); - *ctx++ = readl(addr + APB_DMA_CHAN_APB_PTR); - *ctx++ = readl(addr + APB_DMA_CHAN_APB_SEQ); - } -} - -void tegra_dma_resume(void) -{ - void __iomem *addr = IO_ADDRESS(TEGRA_APB_DMA_BASE); - u32 *ctx = apb_dma; - int i; - - writel(*ctx++, addr + APB_DMA_GEN); - writel(*ctx++, addr + APB_DMA_CNTRL); - writel(*ctx++, addr + APB_DMA_IRQ_MASK); - - for (i = 0; i < TEGRA_SYSTEM_DMA_CH_NR; i++) { - addr = IO_ADDRESS(TEGRA_APB_DMA_CH0_BASE + - TEGRA_APB_DMA_CH0_SIZE * i); - - writel(*ctx++, addr + APB_DMA_CHAN_CSR); - writel(*ctx++, addr + APB_DMA_CHAN_AHB_PTR); - writel(*ctx++, addr + APB_DMA_CHAN_AHB_SEQ); - writel(*ctx++, addr + APB_DMA_CHAN_APB_PTR); - writel(*ctx++, addr + APB_DMA_CHAN_APB_SEQ); - } -} - -#endif diff --git a/arch/arm/mach-tegra/include/mach/dma.h b/arch/arm/mach-tegra/include/mach/dma.h index 9077092812c0..3081cc6dda3b 100644 --- a/arch/arm/mach-tegra/include/mach/dma.h +++ b/arch/arm/mach-tegra/include/mach/dma.h @@ -51,101 +51,4 @@ #define TEGRA_DMA_REQ_SEL_OWR 25 #define TEGRA_DMA_REQ_SEL_INVALID 31 -struct tegra_dma_req; -struct tegra_dma_channel; - -enum tegra_dma_mode { - TEGRA_DMA_SHARED = 1, - TEGRA_DMA_MODE_CONTINOUS = 2, - TEGRA_DMA_MODE_ONESHOT = 4, -}; - -enum tegra_dma_req_error { - TEGRA_DMA_REQ_SUCCESS = 0, - TEGRA_DMA_REQ_ERROR_ABORTED, - TEGRA_DMA_REQ_INFLIGHT, -}; - -enum tegra_dma_req_buff_status { - TEGRA_DMA_REQ_BUF_STATUS_EMPTY = 0, - TEGRA_DMA_REQ_BUF_STATUS_HALF_FULL, - TEGRA_DMA_REQ_BUF_STATUS_FULL, -}; - -struct tegra_dma_req { - struct list_head node; - unsigned int modid; - int instance; - - /* Called when the req is complete and from the DMA ISR context. - * When this is called the req structure is no longer queued by - * the DMA channel. - * - * State of the DMA depends on the number of req it has. If there are - * no DMA requests queued up, then it will STOP the DMA. It there are - * more requests in the DMA, then it will queue the next request. - */ - void (*complete)(struct tegra_dma_req *req); - - /* This is a called from the DMA ISR context when the DMA is still in - * progress and is actively filling same buffer. - * - * In case of continuous mode receive, this threshold is 1/2 the buffer - * size. In other cases, this will not even be called as there is no - * hardware support for it. - * - * In the case of continuous mode receive, if there is next req already - * queued, DMA programs the HW to use that req when this req is - * completed. If there is no "next req" queued, then DMA ISR doesn't do - * anything before calling this callback. - * - * This is mainly used by the cases, where the clients has queued - * only one req and want to get some sort of DMA threshold - * callback to program the next buffer. - * - */ - void (*threshold)(struct tegra_dma_req *req); - - /* 1 to copy to memory. - * 0 to copy from the memory to device FIFO */ - int to_memory; - - void *virt_addr; - - unsigned long source_addr; - unsigned long dest_addr; - unsigned long dest_wrap; - unsigned long source_wrap; - unsigned long source_bus_width; - unsigned long dest_bus_width; - unsigned long req_sel; - unsigned int size; - - /* Updated by the DMA driver on the conpletion of the request. */ - int bytes_transferred; - int status; - - /* DMA completion tracking information */ - int buffer_status; - - /* Client specific data */ - void *dev; -}; - -int tegra_dma_enqueue_req(struct tegra_dma_channel *ch, - struct tegra_dma_req *req); -int tegra_dma_dequeue_req(struct tegra_dma_channel *ch, - struct tegra_dma_req *req); -void tegra_dma_dequeue(struct tegra_dma_channel *ch); -void tegra_dma_flush(struct tegra_dma_channel *ch); - -bool tegra_dma_is_req_inflight(struct tegra_dma_channel *ch, - struct tegra_dma_req *req); -bool tegra_dma_is_empty(struct tegra_dma_channel *ch); - -struct tegra_dma_channel *tegra_dma_allocate_channel(int mode); -void tegra_dma_free_channel(struct tegra_dma_channel *ch); - -int __init tegra_dma_init(void); - #endif diff --git a/arch/arm/mm/context.c b/arch/arm/mm/context.c index 119bc52ab93e..4e07eec1270d 100644 --- a/arch/arm/mm/context.c +++ b/arch/arm/mm/context.c @@ -63,10 +63,11 @@ static int contextidr_notifier(struct notifier_block *unused, unsigned long cmd, pid = task_pid_nr(thread->task) << ASID_BITS; asm volatile( " mrc p15, 0, %0, c13, c0, 1\n" - " bfi %1, %0, #0, %2\n" - " mcr p15, 0, %1, c13, c0, 1\n" + " and %0, %0, %2\n" + " orr %0, %0, %1\n" + " mcr p15, 0, %0, c13, c0, 1\n" : "=r" (contextidr), "+r" (pid) - : "I" (ASID_BITS)); + : "I" (~ASID_MASK)); isb(); return NOTIFY_OK; diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c index 051204fc4617..e59c4ab71bcb 100644 --- a/arch/arm/mm/dma-mapping.c +++ b/arch/arm/mm/dma-mapping.c @@ -489,7 +489,7 @@ static bool __in_atomic_pool(void *start, size_t size) void *pool_start = pool->vaddr; void *pool_end = pool->vaddr + pool->size; - if (start < pool_start || start > pool_end) + if (start < pool_start || start >= pool_end) return false; if (end <= pool_end) diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c index a7a9e41fa2c2..18144e6a3115 100644 --- a/arch/arm/mm/mmu.c +++ b/arch/arm/mm/mmu.c @@ -990,8 +990,8 @@ void __init sanity_check_meminfo(void) * Check whether this memory bank would partially overlap * the vmalloc area. */ - if (__va(bank->start + bank->size) > vmalloc_min || - __va(bank->start + bank->size) < __va(bank->start)) { + if (__va(bank->start + bank->size - 1) >= vmalloc_min || + __va(bank->start + bank->size - 1) <= __va(bank->start)) { unsigned long newsize = vmalloc_min - __va(bank->start); printk(KERN_NOTICE "Truncating RAM at %.8llx-%.8llx " "to -%.8llx (vmalloc region overlap).\n", diff --git a/arch/arm/plat-omap/sram.c b/arch/arm/plat-omap/sram.c index d861aa73299d..28acb383e7df 100644 --- a/arch/arm/plat-omap/sram.c +++ b/arch/arm/plat-omap/sram.c @@ -67,6 +67,7 @@ static unsigned long omap_sram_start; static void __iomem *omap_sram_base; +static unsigned long omap_sram_skip; static unsigned long omap_sram_size; static void __iomem *omap_sram_ceil; @@ -105,6 +106,7 @@ static int is_sram_locked(void) */ static void __init omap_detect_sram(void) { + omap_sram_skip = SRAM_BOOTLOADER_SZ; if (cpu_class_is_omap2()) { if (is_sram_locked()) { if (cpu_is_omap34xx()) { @@ -112,6 +114,7 @@ static void __init omap_detect_sram(void) if ((omap_type() == OMAP2_DEVICE_TYPE_EMU) || (omap_type() == OMAP2_DEVICE_TYPE_SEC)) { omap_sram_size = 0x7000; /* 28K */ + omap_sram_skip += SZ_16K; } else { omap_sram_size = 0x8000; /* 32K */ } @@ -174,8 +177,10 @@ static void __init omap_map_sram(void) return; #ifdef CONFIG_OMAP4_ERRATA_I688 + if (cpu_is_omap44xx()) { omap_sram_start += PAGE_SIZE; omap_sram_size -= SZ_16K; + } #endif if (cpu_is_omap34xx()) { /* @@ -202,8 +207,8 @@ static void __init omap_map_sram(void) * Looks like we need to preserve some bootloader code at the * beginning of SRAM for jumping to flash for reboot to work... */ - memset_io(omap_sram_base + SRAM_BOOTLOADER_SZ, 0, - omap_sram_size - SRAM_BOOTLOADER_SZ); + memset_io(omap_sram_base + omap_sram_skip, 0, + omap_sram_size - omap_sram_skip); } /* @@ -217,7 +222,7 @@ void *omap_sram_push_address(unsigned long size) { unsigned long available, new_ceil = (unsigned long)omap_sram_ceil; - available = omap_sram_ceil - (omap_sram_base + SRAM_BOOTLOADER_SZ); + available = omap_sram_ceil - (omap_sram_base + omap_sram_skip); if (size > available) { pr_err("Not enough space in SRAM\n"); |
