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author | John Crispin <john@phrozen.org> | 2016-12-25 20:11:34 +0100 |
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committer | John Crispin <john@phrozen.org> | 2017-08-05 08:46:36 +0200 |
commit | 74d00a8c3849c1340efd713eb94b786e304c201f (patch) | |
tree | de481743de61c34da96ab5f9dba3af3edcfb8260 /target/linux/generic/patches-3.18/132-mips_inline_dma_ops.patch | |
parent | de350550ef648d9728351b986b0516fa29465c45 (diff) | |
download | upstream-74d00a8c3849c1340efd713eb94b786e304c201f.tar.gz upstream-74d00a8c3849c1340efd713eb94b786e304c201f.tar.bz2 upstream-74d00a8c3849c1340efd713eb94b786e304c201f.zip |
kernel: split patches folder up into backport, pending and hack folders
* properly format/comment all patches
* merge debloat patches
* merge Kconfig patches
* merge swconfig patches
* merge hotplug patches
* drop 200-fix_localversion.patch - upstream
* drop 222-arm_zimage_none.patch - unused
* drop 252-mv_cesa_depends.patch - no longer required
* drop 410-mtd-move-forward-declaration-of-struct-mtd_info.patch - unused
* drop 661-fq_codel_keep_dropped_stats.patch - outdated
* drop 702-phy_add_aneg_done_function.patch - upstream
* drop 840-rtc7301.patch - unused
* drop 841-rtc_pt7c4338.patch - upstream
* drop 921-use_preinit_as_init.patch - unused
* drop spio-gpio-old and gpio-mmc - unused
Signed-off-by: John Crispin <john@phrozen.org>
Diffstat (limited to 'target/linux/generic/patches-3.18/132-mips_inline_dma_ops.patch')
-rw-r--r-- | target/linux/generic/patches-3.18/132-mips_inline_dma_ops.patch | 688 |
1 files changed, 0 insertions, 688 deletions
diff --git a/target/linux/generic/patches-3.18/132-mips_inline_dma_ops.patch b/target/linux/generic/patches-3.18/132-mips_inline_dma_ops.patch deleted file mode 100644 index c008aea41d..0000000000 --- a/target/linux/generic/patches-3.18/132-mips_inline_dma_ops.patch +++ /dev/null @@ -1,688 +0,0 @@ -From 2c58080407554e1bac8fd50d23cb02420524caed Mon Sep 17 00:00:00 2001 -From: Felix Fietkau <nbd@nbd.name> -Date: Mon, 12 Aug 2013 12:50:22 +0200 -Subject: [PATCH] MIPS: partially inline dma ops - -Several DMA ops are no-op on many platforms, and the indirection through -the mips_dma_map_ops function table is causing the compiler to emit -unnecessary code. - -Inlining visibly improves network performance in my tests (on a 24Kc -based system), and also slightly reduces code size of a few drivers. - -Signed-off-by: Felix Fietkau <nbd@nbd.name> ---- - arch/mips/Kconfig | 4 + - arch/mips/include/asm/dma-mapping.h | 360 +++++++++++++++++++++++++++++++++++- - arch/mips/mm/dma-default.c | 163 ++-------------- - 3 files changed, 373 insertions(+), 154 deletions(-) - ---- a/arch/mips/Kconfig -+++ b/arch/mips/Kconfig -@@ -1450,6 +1450,7 @@ config CPU_CAVIUM_OCTEON - select CPU_SUPPORTS_HUGEPAGES - select USB_EHCI_BIG_ENDIAN_MMIO - select MIPS_L1_CACHE_SHIFT_7 -+ select SYS_HAS_DMA_OPS - help - The Cavium Octeon processor is a highly integrated chip containing - many ethernet hardware widgets for networking tasks. The processor -@@ -1705,6 +1706,9 @@ config MIPS_MALTA_PM - bool - default y - -+config SYS_HAS_DMA_OPS -+ bool -+ - # - # CPU may reorder R->R, R->W, W->R, W->W - # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC ---- a/arch/mips/include/asm/dma-mapping.h -+++ b/arch/mips/include/asm/dma-mapping.h -@@ -1,9 +1,16 @@ - #ifndef _ASM_DMA_MAPPING_H - #define _ASM_DMA_MAPPING_H - -+#include <linux/kmemcheck.h> -+#include <linux/bug.h> -+#include <linux/scatterlist.h> -+#include <linux/dma-debug.h> -+#include <linux/dma-attrs.h> -+ - #include <asm/scatterlist.h> - #include <asm/dma-coherence.h> - #include <asm/cache.h> -+#include <asm/cpu-type.h> - #include <asm-generic/dma-coherent.h> - - #ifndef CONFIG_SGI_IP27 /* Kludge to fix 2.6.39 build for IP27 */ -@@ -12,12 +19,48 @@ - - extern struct dma_map_ops *mips_dma_map_ops; - -+void __dma_sync(struct page *page, unsigned long offset, size_t size, -+ enum dma_data_direction direction); -+void *mips_dma_alloc_coherent(struct device *dev, size_t size, -+ dma_addr_t *dma_handle, gfp_t gfp, -+ struct dma_attrs *attrs); -+void mips_dma_free_coherent(struct device *dev, size_t size, void *vaddr, -+ dma_addr_t dma_handle, struct dma_attrs *attrs); -+ - static inline struct dma_map_ops *get_dma_ops(struct device *dev) - { -+#ifdef CONFIG_SYS_HAS_DMA_OPS - if (dev && dev->archdata.dma_ops) - return dev->archdata.dma_ops; - else - return mips_dma_map_ops; -+#else -+ return NULL; -+#endif -+} -+ -+/* -+ * Warning on the terminology - Linux calls an uncached area coherent; -+ * MIPS terminology calls memory areas with hardware maintained coherency -+ * coherent. -+ */ -+ -+static inline int cpu_needs_post_dma_flush(struct device *dev) -+{ -+#ifndef CONFIG_SYS_HAS_CPU_R10000 -+ return 0; -+#endif -+ return !plat_device_is_coherent(dev) && -+ (boot_cpu_type() == CPU_R10000 || -+ boot_cpu_type() == CPU_R12000 || -+ boot_cpu_type() == CPU_BMIPS5000); -+} -+ -+static inline struct page *dma_addr_to_page(struct device *dev, -+ dma_addr_t dma_addr) -+{ -+ return pfn_to_page( -+ plat_dma_addr_to_phys(dev, dma_addr) >> PAGE_SHIFT); - } - - static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size) -@@ -30,12 +73,304 @@ static inline bool dma_capable(struct de - - static inline void dma_mark_clean(void *addr, size_t size) {} - --#include <asm-generic/dma-mapping-common.h> -+static inline dma_addr_t dma_map_single_attrs(struct device *dev, void *ptr, -+ size_t size, -+ enum dma_data_direction dir, -+ struct dma_attrs *attrs) -+{ -+ struct dma_map_ops *ops = get_dma_ops(dev); -+ unsigned long offset = (unsigned long)ptr & ~PAGE_MASK; -+ struct page *page = virt_to_page(ptr); -+ dma_addr_t addr; -+ -+ kmemcheck_mark_initialized(ptr, size); -+ BUG_ON(!valid_dma_direction(dir)); -+ if (ops) { -+ addr = ops->map_page(dev, page, offset, size, dir, attrs); -+ } else { -+ if (!plat_device_is_coherent(dev)) -+ __dma_sync(page, offset, size, dir); -+ -+ addr = plat_map_dma_mem_page(dev, page) + offset; -+ } -+ debug_dma_map_page(dev, page, offset, size, dir, addr, true); -+ return addr; -+} -+ -+static inline void dma_unmap_single_attrs(struct device *dev, dma_addr_t addr, -+ size_t size, -+ enum dma_data_direction dir, -+ struct dma_attrs *attrs) -+{ -+ struct dma_map_ops *ops = get_dma_ops(dev); -+ -+ BUG_ON(!valid_dma_direction(dir)); -+ if (ops) { -+ ops->unmap_page(dev, addr, size, dir, attrs); -+ } else { -+ if (cpu_needs_post_dma_flush(dev)) -+ __dma_sync(dma_addr_to_page(dev, addr), -+ addr & ~PAGE_MASK, size, dir); -+ -+ plat_unmap_dma_mem(dev, addr, size, dir); -+ } -+ debug_dma_unmap_page(dev, addr, size, dir, true); -+} -+ -+static inline int dma_map_sg_attrs(struct device *dev, struct scatterlist *sg, -+ int nents, enum dma_data_direction dir, -+ struct dma_attrs *attrs) -+{ -+ struct dma_map_ops *ops = get_dma_ops(dev); -+ int i, ents; -+ struct scatterlist *s; -+ -+ for_each_sg(sg, s, nents, i) -+ kmemcheck_mark_initialized(sg_virt(s), s->length); -+ BUG_ON(!valid_dma_direction(dir)); -+ if (ops) { -+ ents = ops->map_sg(dev, sg, nents, dir, attrs); -+ } else { -+ for_each_sg(sg, s, nents, i) { -+ struct page *page = sg_page(s); -+ -+ if (!plat_device_is_coherent(dev)) -+ __dma_sync(page, s->offset, s->length, dir); -+#ifdef CONFIG_NEED_SG_DMA_LENGTH -+ s->dma_length = s->length; -+#endif -+ s->dma_address = -+ plat_map_dma_mem_page(dev, page) + s->offset; -+ } -+ ents = nents; -+ } -+ debug_dma_map_sg(dev, sg, nents, ents, dir); -+ -+ return ents; -+} -+ -+static inline void dma_unmap_sg_attrs(struct device *dev, struct scatterlist *sg, -+ int nents, enum dma_data_direction dir, -+ struct dma_attrs *attrs) -+{ -+ struct dma_map_ops *ops = get_dma_ops(dev); -+ struct scatterlist *s; -+ int i; -+ -+ BUG_ON(!valid_dma_direction(dir)); -+ debug_dma_unmap_sg(dev, sg, nents, dir); -+ if (ops) { -+ ops->unmap_sg(dev, sg, nents, dir, attrs); -+ return; -+ } -+ -+ for_each_sg(sg, s, nents, i) { -+ if (!plat_device_is_coherent(dev) && dir != DMA_TO_DEVICE) -+ __dma_sync(sg_page(s), s->offset, s->length, dir); -+ plat_unmap_dma_mem(dev, s->dma_address, s->length, dir); -+ } -+} -+ -+static inline dma_addr_t dma_map_page(struct device *dev, struct page *page, -+ size_t offset, size_t size, -+ enum dma_data_direction dir) -+{ -+ struct dma_map_ops *ops = get_dma_ops(dev); -+ dma_addr_t addr; -+ -+ kmemcheck_mark_initialized(page_address(page) + offset, size); -+ BUG_ON(!valid_dma_direction(dir)); -+ if (ops) { -+ addr = ops->map_page(dev, page, offset, size, dir, NULL); -+ } else { -+ if (!plat_device_is_coherent(dev)) -+ __dma_sync(page, offset, size, dir); -+ -+ addr = plat_map_dma_mem_page(dev, page) + offset; -+ } -+ debug_dma_map_page(dev, page, offset, size, dir, addr, false); -+ -+ return addr; -+} -+ -+static inline void dma_unmap_page(struct device *dev, dma_addr_t addr, -+ size_t size, enum dma_data_direction dir) -+{ -+ struct dma_map_ops *ops = get_dma_ops(dev); -+ -+ BUG_ON(!valid_dma_direction(dir)); -+ if (ops) { -+ ops->unmap_page(dev, addr, size, dir, NULL); -+ } else { -+ if (cpu_needs_post_dma_flush(dev)) -+ __dma_sync(dma_addr_to_page(dev, addr), -+ addr & ~PAGE_MASK, size, dir); -+ -+ plat_unmap_dma_mem(dev, addr, size, dir); -+ } -+ debug_dma_unmap_page(dev, addr, size, dir, false); -+} -+ -+static inline void dma_sync_single_for_cpu(struct device *dev, dma_addr_t addr, -+ size_t size, -+ enum dma_data_direction dir) -+{ -+ struct dma_map_ops *ops = get_dma_ops(dev); -+ -+ BUG_ON(!valid_dma_direction(dir)); -+ if (ops) -+ ops->sync_single_for_cpu(dev, addr, size, dir); -+ else if (cpu_needs_post_dma_flush(dev)) -+ __dma_sync(dma_addr_to_page(dev, addr), -+ addr & ~PAGE_MASK, size, dir); -+ debug_dma_sync_single_for_cpu(dev, addr, size, dir); -+} -+ -+static inline void dma_sync_single_for_device(struct device *dev, -+ dma_addr_t addr, size_t size, -+ enum dma_data_direction dir) -+{ -+ struct dma_map_ops *ops = get_dma_ops(dev); -+ -+ BUG_ON(!valid_dma_direction(dir)); -+ if (ops) -+ ops->sync_single_for_device(dev, addr, size, dir); -+ else if (!plat_device_is_coherent(dev)) -+ __dma_sync(dma_addr_to_page(dev, addr), -+ addr & ~PAGE_MASK, size, dir); -+ debug_dma_sync_single_for_device(dev, addr, size, dir); -+} -+ -+static inline void dma_sync_single_range_for_cpu(struct device *dev, -+ dma_addr_t addr, -+ unsigned long offset, -+ size_t size, -+ enum dma_data_direction dir) -+{ -+ const struct dma_map_ops *ops = get_dma_ops(dev); -+ -+ BUG_ON(!valid_dma_direction(dir)); -+ if (ops) -+ ops->sync_single_for_cpu(dev, addr + offset, size, dir); -+ else if (cpu_needs_post_dma_flush(dev)) -+ __dma_sync(dma_addr_to_page(dev, addr + offset), -+ (addr + offset) & ~PAGE_MASK, size, dir); -+ debug_dma_sync_single_range_for_cpu(dev, addr, offset, size, dir); -+} -+ -+static inline void dma_sync_single_range_for_device(struct device *dev, -+ dma_addr_t addr, -+ unsigned long offset, -+ size_t size, -+ enum dma_data_direction dir) -+{ -+ const struct dma_map_ops *ops = get_dma_ops(dev); -+ -+ BUG_ON(!valid_dma_direction(dir)); -+ if (ops) -+ ops->sync_single_for_device(dev, addr + offset, size, dir); -+ else if (!plat_device_is_coherent(dev)) -+ __dma_sync(dma_addr_to_page(dev, addr + offset), -+ (addr + offset) & ~PAGE_MASK, size, dir); -+ debug_dma_sync_single_range_for_device(dev, addr, offset, size, dir); -+} -+ -+static inline void -+dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, -+ int nelems, enum dma_data_direction dir) -+{ -+ struct dma_map_ops *ops = get_dma_ops(dev); -+ struct scatterlist *s; -+ int i; -+ -+ BUG_ON(!valid_dma_direction(dir)); -+ if (ops) -+ ops->sync_sg_for_cpu(dev, sg, nelems, dir); -+ else if (cpu_needs_post_dma_flush(dev)) { -+ for_each_sg(sg, s, nelems, i) -+ __dma_sync(sg_page(s), s->offset, s->length, dir); -+ } -+ debug_dma_sync_sg_for_cpu(dev, sg, nelems, dir); -+} -+ -+static inline void -+dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, -+ int nelems, enum dma_data_direction dir) -+{ -+ struct dma_map_ops *ops = get_dma_ops(dev); -+ struct scatterlist *s; -+ int i; -+ -+ BUG_ON(!valid_dma_direction(dir)); -+ if (ops) -+ ops->sync_sg_for_device(dev, sg, nelems, dir); -+ else if (!plat_device_is_coherent(dev)) { -+ for_each_sg(sg, s, nelems, i) -+ __dma_sync(sg_page(s), s->offset, s->length, dir); -+ } -+ debug_dma_sync_sg_for_device(dev, sg, nelems, dir); -+ -+} -+ -+#define dma_map_single(d, a, s, r) dma_map_single_attrs(d, a, s, r, NULL) -+#define dma_unmap_single(d, a, s, r) dma_unmap_single_attrs(d, a, s, r, NULL) -+#define dma_map_sg(d, s, n, r) dma_map_sg_attrs(d, s, n, r, NULL) -+#define dma_unmap_sg(d, s, n, r) dma_unmap_sg_attrs(d, s, n, r, NULL) -+ -+extern int dma_common_mmap(struct device *dev, struct vm_area_struct *vma, -+ void *cpu_addr, dma_addr_t dma_addr, size_t size); -+ -+/** -+ * dma_mmap_attrs - map a coherent DMA allocation into user space -+ * @dev: valid struct device pointer, or NULL for ISA and EISA-like devices -+ * @vma: vm_area_struct describing requested user mapping -+ * @cpu_addr: kernel CPU-view address returned from dma_alloc_attrs -+ * @handle: device-view address returned from dma_alloc_attrs -+ * @size: size of memory originally requested in dma_alloc_attrs -+ * @attrs: attributes of mapping properties requested in dma_alloc_attrs -+ * -+ * Map a coherent DMA buffer previously allocated by dma_alloc_attrs -+ * into user space. The coherent DMA buffer must not be freed by the -+ * driver until the user space mapping has been released. -+ */ -+static inline int -+dma_mmap_attrs(struct device *dev, struct vm_area_struct *vma, void *cpu_addr, -+ dma_addr_t dma_addr, size_t size, struct dma_attrs *attrs) -+{ -+ struct dma_map_ops *ops = get_dma_ops(dev); -+ BUG_ON(!ops); -+ if (ops && ops->mmap) -+ return ops->mmap(dev, vma, cpu_addr, dma_addr, size, attrs); -+ return dma_common_mmap(dev, vma, cpu_addr, dma_addr, size); -+} -+ -+#define dma_mmap_coherent(d, v, c, h, s) dma_mmap_attrs(d, v, c, h, s, NULL) -+ -+int -+dma_common_get_sgtable(struct device *dev, struct sg_table *sgt, -+ void *cpu_addr, dma_addr_t dma_addr, size_t size); -+ -+static inline int -+dma_get_sgtable_attrs(struct device *dev, struct sg_table *sgt, void *cpu_addr, -+ dma_addr_t dma_addr, size_t size, struct dma_attrs *attrs) -+{ -+ struct dma_map_ops *ops = get_dma_ops(dev); -+ BUG_ON(!ops); -+ if (ops && ops->get_sgtable) -+ return ops->get_sgtable(dev, sgt, cpu_addr, dma_addr, size, -+ attrs); -+ return dma_common_get_sgtable(dev, sgt, cpu_addr, dma_addr, size); -+} -+ -+#define dma_get_sgtable(d, t, v, h, s) dma_get_sgtable_attrs(d, t, v, h, s, NULL) -+ - - static inline int dma_supported(struct device *dev, u64 mask) - { - struct dma_map_ops *ops = get_dma_ops(dev); -- return ops->dma_supported(dev, mask); -+ if (ops) -+ return ops->dma_supported(dev, mask); -+ return plat_dma_supported(dev, mask); - } - - static inline int dma_mapping_error(struct device *dev, u64 mask) -@@ -43,7 +378,9 @@ static inline int dma_mapping_error(stru - struct dma_map_ops *ops = get_dma_ops(dev); - - debug_dma_mapping_error(dev, mask); -- return ops->mapping_error(dev, mask); -+ if (ops) -+ return ops->mapping_error(dev, mask); -+ return 0; - } - - static inline int -@@ -54,7 +391,7 @@ dma_set_mask(struct device *dev, u64 mas - if(!dev->dma_mask || !dma_supported(dev, mask)) - return -EIO; - -- if (ops->set_dma_mask) -+ if (ops && ops->set_dma_mask) - return ops->set_dma_mask(dev, mask); - - *dev->dma_mask = mask; -@@ -74,7 +411,11 @@ static inline void *dma_alloc_attrs(stru - void *ret; - struct dma_map_ops *ops = get_dma_ops(dev); - -- ret = ops->alloc(dev, size, dma_handle, gfp, attrs); -+ if (ops) -+ ret = ops->alloc(dev, size, dma_handle, gfp, attrs); -+ else -+ ret = mips_dma_alloc_coherent(dev, size, dma_handle, gfp, -+ attrs); - - debug_dma_alloc_coherent(dev, size, *dma_handle, ret); - -@@ -89,7 +430,10 @@ static inline void dma_free_attrs(struct - { - struct dma_map_ops *ops = get_dma_ops(dev); - -- ops->free(dev, size, vaddr, dma_handle, attrs); -+ if (ops) -+ ops->free(dev, size, vaddr, dma_handle, attrs); -+ else -+ mips_dma_free_coherent(dev, size, vaddr, dma_handle, attrs); - - debug_dma_free_coherent(dev, size, vaddr, dma_handle); - } ---- a/arch/mips/mm/dma-default.c -+++ b/arch/mips/mm/dma-default.c -@@ -26,7 +26,7 @@ - - #ifdef CONFIG_DMA_MAYBE_COHERENT - int coherentio = 0; /* User defined DMA coherency from command line. */ --EXPORT_SYMBOL_GPL(coherentio); -+EXPORT_SYMBOL(coherentio); - int hw_coherentio = 0; /* Actual hardware supported DMA coherency setting. */ - - static int __init setcoherentio(char *str) -@@ -46,30 +46,6 @@ static int __init setnocoherentio(char * - early_param("nocoherentio", setnocoherentio); - #endif - --static inline struct page *dma_addr_to_page(struct device *dev, -- dma_addr_t dma_addr) --{ -- return pfn_to_page( -- plat_dma_addr_to_phys(dev, dma_addr) >> PAGE_SHIFT); --} -- --/* -- * The affected CPUs below in 'cpu_needs_post_dma_flush()' can -- * speculatively fill random cachelines with stale data at any time, -- * requiring an extra flush post-DMA. -- * -- * Warning on the terminology - Linux calls an uncached area coherent; -- * MIPS terminology calls memory areas with hardware maintained coherency -- * coherent. -- */ --static inline int cpu_needs_post_dma_flush(struct device *dev) --{ -- return !plat_device_is_coherent(dev) && -- (boot_cpu_type() == CPU_R10000 || -- boot_cpu_type() == CPU_R12000 || -- boot_cpu_type() == CPU_BMIPS5000); --} -- - static gfp_t massage_gfp_flags(const struct device *dev, gfp_t gfp) - { - gfp_t dma_flag; -@@ -125,8 +101,9 @@ void *dma_alloc_noncoherent(struct devic - } - EXPORT_SYMBOL(dma_alloc_noncoherent); - --static void *mips_dma_alloc_coherent(struct device *dev, size_t size, -- dma_addr_t * dma_handle, gfp_t gfp, struct dma_attrs *attrs) -+void *mips_dma_alloc_coherent(struct device *dev, size_t size, -+ dma_addr_t *dma_handle, gfp_t gfp, -+ struct dma_attrs *attrs) - { - void *ret; - struct page *page = NULL; -@@ -157,6 +134,7 @@ static void *mips_dma_alloc_coherent(str - - return ret; - } -+EXPORT_SYMBOL(mips_dma_alloc_coherent); - - - void dma_free_noncoherent(struct device *dev, size_t size, void *vaddr, -@@ -167,8 +145,8 @@ void dma_free_noncoherent(struct device - } - EXPORT_SYMBOL(dma_free_noncoherent); - --static void mips_dma_free_coherent(struct device *dev, size_t size, void *vaddr, -- dma_addr_t dma_handle, struct dma_attrs *attrs) -+void mips_dma_free_coherent(struct device *dev, size_t size, void *vaddr, -+ dma_addr_t dma_handle, struct dma_attrs *attrs) - { - unsigned long addr = (unsigned long) vaddr; - int order = get_order(size); -@@ -188,6 +166,7 @@ static void mips_dma_free_coherent(struc - if (!dma_release_from_contiguous(dev, page, count)) - __free_pages(page, get_order(size)); - } -+EXPORT_SYMBOL(mips_dma_free_coherent); - - static inline void __dma_sync_virtual(void *addr, size_t size, - enum dma_data_direction direction) -@@ -216,8 +195,8 @@ static inline void __dma_sync_virtual(vo - * If highmem is not configured then the bulk of this loop gets - * optimized out. - */ --static inline void __dma_sync(struct page *page, -- unsigned long offset, size_t size, enum dma_data_direction direction) -+void __dma_sync(struct page *page, unsigned long offset, size_t size, -+ enum dma_data_direction direction) - { - size_t left = size; - -@@ -246,108 +225,7 @@ static inline void __dma_sync(struct pag - left -= len; - } while (left); - } -- --static void mips_dma_unmap_page(struct device *dev, dma_addr_t dma_addr, -- size_t size, enum dma_data_direction direction, struct dma_attrs *attrs) --{ -- if (cpu_needs_post_dma_flush(dev)) -- __dma_sync(dma_addr_to_page(dev, dma_addr), -- dma_addr & ~PAGE_MASK, size, direction); -- -- plat_unmap_dma_mem(dev, dma_addr, size, direction); --} -- --static int mips_dma_map_sg(struct device *dev, struct scatterlist *sg, -- int nents, enum dma_data_direction direction, struct dma_attrs *attrs) --{ -- int i; -- -- for (i = 0; i < nents; i++, sg++) { -- if (!plat_device_is_coherent(dev)) -- __dma_sync(sg_page(sg), sg->offset, sg->length, -- direction); --#ifdef CONFIG_NEED_SG_DMA_LENGTH -- sg->dma_length = sg->length; --#endif -- sg->dma_address = plat_map_dma_mem_page(dev, sg_page(sg)) + -- sg->offset; -- } -- -- return nents; --} -- --static dma_addr_t mips_dma_map_page(struct device *dev, struct page *page, -- unsigned long offset, size_t size, enum dma_data_direction direction, -- struct dma_attrs *attrs) --{ -- if (!plat_device_is_coherent(dev)) -- __dma_sync(page, offset, size, direction); -- -- return plat_map_dma_mem_page(dev, page) + offset; --} -- --static void mips_dma_unmap_sg(struct device *dev, struct scatterlist *sg, -- int nhwentries, enum dma_data_direction direction, -- struct dma_attrs *attrs) --{ -- int i; -- -- for (i = 0; i < nhwentries; i++, sg++) { -- if (!plat_device_is_coherent(dev) && -- direction != DMA_TO_DEVICE) -- __dma_sync(sg_page(sg), sg->offset, sg->length, -- direction); -- plat_unmap_dma_mem(dev, sg->dma_address, sg->length, direction); -- } --} -- --static void mips_dma_sync_single_for_cpu(struct device *dev, -- dma_addr_t dma_handle, size_t size, enum dma_data_direction direction) --{ -- if (cpu_needs_post_dma_flush(dev)) -- __dma_sync(dma_addr_to_page(dev, dma_handle), -- dma_handle & ~PAGE_MASK, size, direction); --} -- --static void mips_dma_sync_single_for_device(struct device *dev, -- dma_addr_t dma_handle, size_t size, enum dma_data_direction direction) --{ -- if (!plat_device_is_coherent(dev)) -- __dma_sync(dma_addr_to_page(dev, dma_handle), -- dma_handle & ~PAGE_MASK, size, direction); --} -- --static void mips_dma_sync_sg_for_cpu(struct device *dev, -- struct scatterlist *sg, int nelems, enum dma_data_direction direction) --{ -- int i; -- -- if (cpu_needs_post_dma_flush(dev)) -- for (i = 0; i < nelems; i++, sg++) -- __dma_sync(sg_page(sg), sg->offset, sg->length, -- direction); --} -- --static void mips_dma_sync_sg_for_device(struct device *dev, -- struct scatterlist *sg, int nelems, enum dma_data_direction direction) --{ -- int i; -- -- if (!plat_device_is_coherent(dev)) -- for (i = 0; i < nelems; i++, sg++) -- __dma_sync(sg_page(sg), sg->offset, sg->length, -- direction); --} -- --int mips_dma_mapping_error(struct device *dev, dma_addr_t dma_addr) --{ -- return 0; --} -- --int mips_dma_supported(struct device *dev, u64 mask) --{ -- return plat_dma_supported(dev, mask); --} -+EXPORT_SYMBOL(__dma_sync); - - void dma_cache_sync(struct device *dev, void *vaddr, size_t size, - enum dma_data_direction direction) -@@ -360,23 +238,10 @@ void dma_cache_sync(struct device *dev, - - EXPORT_SYMBOL(dma_cache_sync); - --static struct dma_map_ops mips_default_dma_map_ops = { -- .alloc = mips_dma_alloc_coherent, -- .free = mips_dma_free_coherent, -- .map_page = mips_dma_map_page, -- .unmap_page = mips_dma_unmap_page, -- .map_sg = mips_dma_map_sg, -- .unmap_sg = mips_dma_unmap_sg, -- .sync_single_for_cpu = mips_dma_sync_single_for_cpu, -- .sync_single_for_device = mips_dma_sync_single_for_device, -- .sync_sg_for_cpu = mips_dma_sync_sg_for_cpu, -- .sync_sg_for_device = mips_dma_sync_sg_for_device, -- .mapping_error = mips_dma_mapping_error, -- .dma_supported = mips_dma_supported --}; -- --struct dma_map_ops *mips_dma_map_ops = &mips_default_dma_map_ops; -+#ifdef CONFIG_SYS_HAS_DMA_OPS -+struct dma_map_ops *mips_dma_map_ops = NULL; - EXPORT_SYMBOL(mips_dma_map_ops); -+#endif - - #define PREALLOC_DMA_DEBUG_ENTRIES (1 << 16) - |