From a14f5e4feb3efd907df7f1b176c2367910a8e796 Mon Sep 17 00:00:00 2001 From: Greg Ungerer Date: Fri, 17 Apr 2009 22:55:06 +1000 Subject: m68knommu: fix missing .data.cacheline_aligned section Add a .data.cacheline_aligned section to the data segment. Signed-off-by: Greg Ungerer --- arch/m68knommu/kernel/vmlinux.lds.S | 2 ++ 1 file changed, 2 insertions(+) (limited to 'arch/m68knommu/kernel') diff --git a/arch/m68knommu/kernel/vmlinux.lds.S b/arch/m68knommu/kernel/vmlinux.lds.S index 69ba9b10767..b7fe505e358 100644 --- a/arch/m68knommu/kernel/vmlinux.lds.S +++ b/arch/m68knommu/kernel/vmlinux.lds.S @@ -147,6 +147,8 @@ SECTIONS { . = ALIGN(4); _sdata = . ; DATA_DATA + . = ALIGN(32); + *(.data.cacheline_aligned) . = ALIGN(8192) ; *(.data.init_task) _edata = . ; -- cgit From 830c072b1ea0078396c42db120452fc36516ed1d Mon Sep 17 00:00:00 2001 From: Greg Ungerer Date: Fri, 17 Apr 2009 22:56:50 +1000 Subject: m68knommu: remove unused kernel stats offsets The irq field of the kernel stats struct is not used by the assembly support code, so remove it from the offsets. Signed-off-by: Greg Ungerer --- arch/m68knommu/kernel/asm-offsets.c | 6 ------ 1 file changed, 6 deletions(-) (limited to 'arch/m68knommu/kernel') diff --git a/arch/m68knommu/kernel/asm-offsets.c b/arch/m68knommu/kernel/asm-offsets.c index c785d07c02c..f500dd6935d 100644 --- a/arch/m68knommu/kernel/asm-offsets.c +++ b/arch/m68knommu/kernel/asm-offsets.c @@ -30,9 +30,6 @@ int main(void) DEFINE(TASK_MM, offsetof(struct task_struct, mm)); DEFINE(TASK_ACTIVE_MM, offsetof(struct task_struct, active_mm)); - /* offsets into the kernel_stat struct */ - DEFINE(STAT_IRQ, offsetof(struct kernel_stat, irqs)); - /* offsets into the irq_cpustat_t struct */ DEFINE(CPUSTAT_SOFTIRQ_PENDING, offsetof(irq_cpustat_t, __softirq_pending)); @@ -69,9 +66,6 @@ int main(void) DEFINE(PT_VECTOR, offsetof(struct pt_regs, pc) + 4); #endif - /* offsets into the kernel_stat struct */ - DEFINE(STAT_IRQ, offsetof(struct kernel_stat, irqs)); - /* signal defines */ DEFINE(SIGSEGV, SIGSEGV); DEFINE(SEGV_MAPERR, SEGV_MAPERR); -- cgit From ec40f95db753d3bfdbcc43b1505ecf7980cb6492 Mon Sep 17 00:00:00 2001 From: Greg Ungerer Date: Fri, 17 Apr 2009 23:11:38 +1000 Subject: m68knommu: fix DMA support for ColdFire ColdFire CPU family members support DMA (all those with the FEC ethernet core use it, the rest have dedicated DMA engines). The code support is just missing a handful of routines for it to be usable by drivers. Add the missing dma_ functions. Signed-off-by: Greg Ungerer --- arch/m68knommu/kernel/dma.c | 37 ++++++++++++++++++++++++++++++++++--- 1 file changed, 34 insertions(+), 3 deletions(-) (limited to 'arch/m68knommu/kernel') diff --git a/arch/m68knommu/kernel/dma.c b/arch/m68knommu/kernel/dma.c index 93612580663..aaf38bbbb6c 100644 --- a/arch/m68knommu/kernel/dma.c +++ b/arch/m68knommu/kernel/dma.c @@ -7,10 +7,9 @@ #include #include -#include #include #include -#include +#include void *dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle, gfp_t gfp) @@ -36,7 +35,39 @@ void dma_free_coherent(struct device *dev, size_t size, free_pages((unsigned long)vaddr, get_order(size)); } -void dma_sync_single_for_cpu(struct device *dev, dma_addr_t handle, size_t size, enum dma_data_direction dir) +void dma_sync_single_for_device(struct device *dev, dma_addr_t handle, + size_t size, enum dma_data_direction dir) { + switch (dir) { + case DMA_TO_DEVICE: + flush_dcache_range(handle, size); + break; + case DMA_FROM_DEVICE: + /* Should be clear already */ + break; + default: + if (printk_ratelimit()) + printk("dma_sync_single_for_device: unsupported dir %u\n", dir); + break; + } +} + +EXPORT_SYMBOL(dma_sync_single_for_device); +dma_addr_t dma_map_single(struct device *dev, void *addr, size_t size, + enum dma_data_direction dir) +{ + dma_addr_t handle = virt_to_phys(addr); + flush_dcache_range(handle, size); + return handle; } +EXPORT_SYMBOL(dma_map_single); +dma_addr_t dma_map_page(struct device *dev, struct page *page, + unsigned long offset, size_t size, + enum dma_data_direction dir) +{ + dma_addr_t handle = page_to_phys(page) + offset; + dma_sync_single_for_device(dev, handle, size, dir); + return handle; +} +EXPORT_SYMBOL(dma_map_page); -- cgit From cc7c0fa3b90a047751f50371639b90dc119e63ea Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Thu, 9 Apr 2009 22:23:51 +0200 Subject: m68k,m68knommu: Wire up preadv and pwritev Signed-off-by: Geert Uytterhoeven Acked-by: Greg Ungerer --- arch/m68knommu/kernel/syscalltable.S | 2 ++ 1 file changed, 2 insertions(+) (limited to 'arch/m68knommu/kernel') diff --git a/arch/m68knommu/kernel/syscalltable.S b/arch/m68knommu/kernel/syscalltable.S index 1017e76f371..c0b8782832f 100644 --- a/arch/m68knommu/kernel/syscalltable.S +++ b/arch/m68knommu/kernel/syscalltable.S @@ -347,6 +347,8 @@ ENTRY(sys_call_table) .long sys_dup3 .long sys_pipe2 .long sys_inotify_init1 + .long sys_preadv + .long sys_pwritev /* 330 */ .rept NR_syscalls-(.-sys_call_table)/4 .long sys_ni_syscall -- cgit