+++ /dev/null
-Platforms will now have to supply a function dma_device_is_coherent which
-returns if a particular device participates in the coherence domain. For
-most platforms this function will always return 0 or 1.
-
-Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
-Signed-off-by: Felix Fietkau <nbd@openwrt.org>
-
-diff -urN linux.old/arch/mips/Kconfig linux.dev/arch/mips/Kconfig
---- linux.old/arch/mips/Kconfig 2007-01-10 20:10:37.000000000 +0100
-+++ linux.dev/arch/mips/Kconfig 2007-02-09 20:26:45.367388152 +0100
-@@ -571,8 +571,6 @@
- select ARC
- select ARC32
- select BOOT_ELF32
-- select OWN_DMA
-- select DMA_IP32
- select DMA_NONCOHERENT
- select HW_HAS_PCI
- select R5000_CPU_SCACHE
-@@ -835,9 +833,6 @@
- config DMA_NEED_PCI_MAP_STATE
- bool
-
--config OWN_DMA
-- bool
--
- config EARLY_PRINTK
- bool
-
-diff -urN linux.old/arch/mips/mm/dma-coherent.c linux.dev/arch/mips/mm/dma-coherent.c
---- linux.old/arch/mips/mm/dma-coherent.c 2007-01-10 20:10:37.000000000 +0100
-+++ linux.dev/arch/mips/mm/dma-coherent.c 1970-01-01 01:00:00.000000000 +0100
-@@ -1,254 +0,0 @@
--/*
-- * This file is subject to the terms and conditions of the GNU General Public
-- * License. See the file "COPYING" in the main directory of this archive
-- * for more details.
-- *
-- * Copyright (C) 2000 Ani Joshi <ajoshi@unixbox.com>
-- * Copyright (C) 2000, 2001 Ralf Baechle <ralf@gnu.org>
-- * swiped from i386, and cloned for MIPS by Geert, polished by Ralf.
-- */
--#include <linux/types.h>
--#include <linux/dma-mapping.h>
--#include <linux/mm.h>
--#include <linux/module.h>
--#include <linux/string.h>
--
--#include <asm/cache.h>
--#include <asm/io.h>
--
--void *dma_alloc_noncoherent(struct device *dev, size_t size,
-- dma_addr_t * dma_handle, gfp_t gfp)
--{
-- void *ret;
-- /* ignore region specifiers */
-- gfp &= ~(__GFP_DMA | __GFP_HIGHMEM);
--
-- if (dev == NULL || (dev->coherent_dma_mask < 0xffffffff))
-- gfp |= GFP_DMA;
-- ret = (void *) __get_free_pages(gfp, get_order(size));
--
-- if (ret != NULL) {
-- memset(ret, 0, size);
-- *dma_handle = virt_to_phys(ret);
-- }
--
-- return ret;
--}
--
--EXPORT_SYMBOL(dma_alloc_noncoherent);
--
--void *dma_alloc_coherent(struct device *dev, size_t size,
-- dma_addr_t * dma_handle, gfp_t gfp)
-- __attribute__((alias("dma_alloc_noncoherent")));
--
--EXPORT_SYMBOL(dma_alloc_coherent);
--
--void dma_free_noncoherent(struct device *dev, size_t size, void *vaddr,
-- dma_addr_t dma_handle)
--{
-- unsigned long addr = (unsigned long) vaddr;
--
-- free_pages(addr, get_order(size));
--}
--
--EXPORT_SYMBOL(dma_free_noncoherent);
--
--void dma_free_coherent(struct device *dev, size_t size, void *vaddr,
-- dma_addr_t dma_handle) __attribute__((alias("dma_free_noncoherent")));
--
--EXPORT_SYMBOL(dma_free_coherent);
--
--dma_addr_t dma_map_single(struct device *dev, void *ptr, size_t size,
-- enum dma_data_direction direction)
--{
-- BUG_ON(direction == DMA_NONE);
--
-- return __pa(ptr);
--}
--
--EXPORT_SYMBOL(dma_map_single);
--
--void dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size,
-- enum dma_data_direction direction)
--{
-- BUG_ON(direction == DMA_NONE);
--}
--
--EXPORT_SYMBOL(dma_unmap_single);
--
--int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
-- enum dma_data_direction direction)
--{
-- int i;
--
-- BUG_ON(direction == DMA_NONE);
--
-- for (i = 0; i < nents; i++, sg++) {
-- sg->dma_address = (dma_addr_t)page_to_phys(sg->page) + sg->offset;
-- }
--
-- return nents;
--}
--
--EXPORT_SYMBOL(dma_map_sg);
--
--dma_addr_t dma_map_page(struct device *dev, struct page *page,
-- unsigned long offset, size_t size, enum dma_data_direction direction)
--{
-- BUG_ON(direction == DMA_NONE);
--
-- return page_to_phys(page) + offset;
--}
--
--EXPORT_SYMBOL(dma_map_page);
--
--void dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size,
-- enum dma_data_direction direction)
--{
-- BUG_ON(direction == DMA_NONE);
--}
--
--EXPORT_SYMBOL(dma_unmap_page);
--
--void dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries,
-- enum dma_data_direction direction)
--{
-- BUG_ON(direction == DMA_NONE);
--}
--
--EXPORT_SYMBOL(dma_unmap_sg);
--
--void dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle,
-- size_t size, enum dma_data_direction direction)
--{
-- BUG_ON(direction == DMA_NONE);
--}
--
--EXPORT_SYMBOL(dma_sync_single_for_cpu);
--
--void dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle,
-- size_t size, enum dma_data_direction direction)
--{
-- BUG_ON(direction == DMA_NONE);
--}
--
--EXPORT_SYMBOL(dma_sync_single_for_device);
--
--void dma_sync_single_range_for_cpu(struct device *dev, dma_addr_t dma_handle,
-- unsigned long offset, size_t size,
-- enum dma_data_direction direction)
--{
-- BUG_ON(direction == DMA_NONE);
--}
--
--EXPORT_SYMBOL(dma_sync_single_range_for_cpu);
--
--void dma_sync_single_range_for_device(struct device *dev, dma_addr_t dma_handle,
-- unsigned long offset, size_t size,
-- enum dma_data_direction direction)
--{
-- BUG_ON(direction == DMA_NONE);
--}
--
--EXPORT_SYMBOL(dma_sync_single_range_for_device);
--
--void dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nelems,
-- enum dma_data_direction direction)
--{
-- BUG_ON(direction == DMA_NONE);
--}
--
--EXPORT_SYMBOL(dma_sync_sg_for_cpu);
--
--void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nelems,
-- enum dma_data_direction direction)
--{
-- BUG_ON(direction == DMA_NONE);
--}
--
--EXPORT_SYMBOL(dma_sync_sg_for_device);
--
--int dma_mapping_error(dma_addr_t dma_addr)
--{
-- return 0;
--}
--
--EXPORT_SYMBOL(dma_mapping_error);
--
--int dma_supported(struct device *dev, u64 mask)
--{
-- /*
-- * we fall back to GFP_DMA when the mask isn't all 1s,
-- * so we can't guarantee allocations that must be
-- * within a tighter range than GFP_DMA..
-- */
-- if (mask < 0x00ffffff)
-- return 0;
--
-- return 1;
--}
--
--EXPORT_SYMBOL(dma_supported);
--
--int dma_is_consistent(dma_addr_t dma_addr)
--{
-- return 1;
--}
--
--EXPORT_SYMBOL(dma_is_consistent);
--
--void dma_cache_sync(void *vaddr, size_t size,
-- enum dma_data_direction direction)
--{
-- BUG_ON(direction == DMA_NONE);
--}
--
--EXPORT_SYMBOL(dma_cache_sync);
--
--/* The DAC routines are a PCIism.. */
--
--#ifdef CONFIG_PCI
--
--#include <linux/pci.h>
--
--dma64_addr_t pci_dac_page_to_dma(struct pci_dev *pdev,
-- struct page *page, unsigned long offset, int direction)
--{
-- return (dma64_addr_t)page_to_phys(page) + offset;
--}
--
--EXPORT_SYMBOL(pci_dac_page_to_dma);
--
--struct page *pci_dac_dma_to_page(struct pci_dev *pdev,
-- dma64_addr_t dma_addr)
--{
-- return mem_map + (dma_addr >> PAGE_SHIFT);
--}
--
--EXPORT_SYMBOL(pci_dac_dma_to_page);
--
--unsigned long pci_dac_dma_to_offset(struct pci_dev *pdev,
-- dma64_addr_t dma_addr)
--{
-- return dma_addr & ~PAGE_MASK;
--}
--
--EXPORT_SYMBOL(pci_dac_dma_to_offset);
--
--void pci_dac_dma_sync_single_for_cpu(struct pci_dev *pdev,
-- dma64_addr_t dma_addr, size_t len, int direction)
--{
-- BUG_ON(direction == PCI_DMA_NONE);
--}
--
--EXPORT_SYMBOL(pci_dac_dma_sync_single_for_cpu);
--
--void pci_dac_dma_sync_single_for_device(struct pci_dev *pdev,
-- dma64_addr_t dma_addr, size_t len, int direction)
--{
-- BUG_ON(direction == PCI_DMA_NONE);
--}
--
--EXPORT_SYMBOL(pci_dac_dma_sync_single_for_device);
--
--#endif /* CONFIG_PCI */
-diff -urN linux.old/arch/mips/mm/dma-default.c linux.dev/arch/mips/mm/dma-default.c
---- linux.old/arch/mips/mm/dma-default.c 1970-01-01 01:00:00.000000000 +0100
-+++ linux.dev/arch/mips/mm/dma-default.c 2007-02-09 20:26:48.671885792 +0100
-@@ -0,0 +1,363 @@
-+/*
-+ * This file is subject to the terms and conditions of the GNU General Public
-+ * License. See the file "COPYING" in the main directory of this archive
-+ * for more details.
-+ *
-+ * Copyright (C) 2000 Ani Joshi <ajoshi@unixbox.com>
-+ * Copyright (C) 2000, 2001, 06 Ralf Baechle <ralf@linux-mips.org>
-+ * swiped from i386, and cloned for MIPS by Geert, polished by Ralf.
-+ */
-+
-+#include <linux/types.h>
-+#include <linux/dma-mapping.h>
-+#include <linux/mm.h>
-+#include <linux/module.h>
-+#include <linux/string.h>
-+
-+#include <asm/cache.h>
-+#include <asm/io.h>
-+
-+#include <dma-coherence.h>
-+
-+/*
-+ * Warning on the terminology - Linux calls an uncached area coherent;
-+ * MIPS terminology calls memory areas with hardware maintained coherency
-+ * coherent.
-+ */
-+
-+static inline int cpu_is_noncoherent_r10000(struct device *dev)
-+{
-+ return !plat_device_is_coherent(dev) &&
-+ (current_cpu_data.cputype == CPU_R10000 &&
-+ current_cpu_data.cputype == CPU_R12000);
-+}
-+
-+void *dma_alloc_noncoherent(struct device *dev, size_t size,
-+ dma_addr_t * dma_handle, gfp_t gfp)
-+{
-+ void *ret;
-+
-+ /* ignore region specifiers */
-+ gfp &= ~(__GFP_DMA | __GFP_HIGHMEM);
-+
-+ if (dev == NULL || (dev->coherent_dma_mask < 0xffffffff))
-+ gfp |= GFP_DMA;
-+ ret = (void *) __get_free_pages(gfp, get_order(size));
-+
-+ if (ret != NULL) {
-+ memset(ret, 0, size);
-+ *dma_handle = plat_map_dma_mem(dev, ret, size);
-+ }
-+
-+ return ret;
-+}
-+
-+EXPORT_SYMBOL(dma_alloc_noncoherent);
-+
-+void *dma_alloc_coherent(struct device *dev, size_t size,
-+ dma_addr_t * dma_handle, gfp_t gfp)
-+{
-+ void *ret;
-+
-+ /* ignore region specifiers */
-+ gfp &= ~(__GFP_DMA | __GFP_HIGHMEM);
-+
-+ if (dev == NULL || (dev->coherent_dma_mask < 0xffffffff))
-+ gfp |= GFP_DMA;
-+ ret = (void *) __get_free_pages(gfp, get_order(size));
-+
-+ if (ret) {
-+ memset(ret, 0, size);
-+ *dma_handle = plat_map_dma_mem(dev, ret, size);
-+
-+ if (!plat_device_is_coherent(dev)) {
-+ dma_cache_wback_inv((unsigned long) ret, size);
-+ ret = UNCAC_ADDR(ret);
-+ }
-+ }
-+
-+ return ret;
-+}
-+
-+EXPORT_SYMBOL(dma_alloc_coherent);
-+
-+void dma_free_noncoherent(struct device *dev, size_t size, void *vaddr,
-+ dma_addr_t dma_handle)
-+{
-+ free_pages((unsigned long) vaddr, get_order(size));
-+}
-+
-+EXPORT_SYMBOL(dma_free_noncoherent);
-+
-+void dma_free_coherent(struct device *dev, size_t size, void *vaddr,
-+ dma_addr_t dma_handle)
-+{
-+ unsigned long addr = (unsigned long) vaddr;
-+
-+ if (!plat_device_is_coherent(dev))
-+ addr = CAC_ADDR(addr);
-+
-+ free_pages(addr, get_order(size));
-+}
-+
-+EXPORT_SYMBOL(dma_free_coherent);
-+
-+static inline void __dma_sync(unsigned long addr, size_t size,
-+ enum dma_data_direction direction)
-+{
-+ switch (direction) {
-+ case DMA_TO_DEVICE:
-+ dma_cache_wback(addr, size);
-+ break;
-+
-+ case DMA_FROM_DEVICE:
-+ dma_cache_inv(addr, size);
-+ break;
-+
-+ case DMA_BIDIRECTIONAL:
-+ dma_cache_wback_inv(addr, size);
-+ break;
-+
-+ default:
-+ BUG();
-+ }
-+}
-+
-+dma_addr_t dma_map_single(struct device *dev, void *ptr, size_t size,
-+ enum dma_data_direction direction)
-+{
-+ unsigned long addr = (unsigned long) ptr;
-+
-+ if (!plat_device_is_coherent(dev))
-+ __dma_sync(addr, size, direction);
-+
-+ return plat_map_dma_mem(dev, ptr, size);
-+}
-+
-+EXPORT_SYMBOL(dma_map_single);
-+
-+void dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size,
-+ enum dma_data_direction direction)
-+{
-+ if (cpu_is_noncoherent_r10000(dev))
-+ __dma_sync(plat_dma_addr_to_phys(dma_addr) + PAGE_OFFSET, size,
-+ direction);
-+
-+ plat_unmap_dma_mem(dma_addr);
-+}
-+
-+EXPORT_SYMBOL(dma_unmap_single);
-+
-+int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
-+ enum dma_data_direction direction)
-+{
-+ int i;
-+
-+ BUG_ON(direction == DMA_NONE);
-+
-+ for (i = 0; i < nents; i++, sg++) {
-+ unsigned long addr;
-+
-+ addr = (unsigned long) page_address(sg->page);
-+ if (!plat_device_is_coherent(dev) && addr)
-+ __dma_sync(addr + sg->offset, sg->length, direction);
-+ sg->dma_address = plat_map_dma_mem_page(dev, sg->page) +
-+ sg->offset;
-+ }
-+
-+ return nents;
-+}
-+
-+EXPORT_SYMBOL(dma_map_sg);
-+
-+dma_addr_t dma_map_page(struct device *dev, struct page *page,
-+ unsigned long offset, size_t size, enum dma_data_direction direction)
-+{
-+ BUG_ON(direction == DMA_NONE);
-+
-+ if (!plat_device_is_coherent(dev)) {
-+ unsigned long addr;
-+
-+ addr = (unsigned long) page_address(page) + offset;
-+ dma_cache_wback_inv(addr, size);
-+ }
-+
-+ return plat_map_dma_mem_page(dev, page) + offset;
-+}
-+
-+EXPORT_SYMBOL(dma_map_page);
-+
-+void dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size,
-+ enum dma_data_direction direction)
-+{
-+ BUG_ON(direction == DMA_NONE);
-+
-+ if (!plat_device_is_coherent(dev) && direction != DMA_TO_DEVICE) {
-+ unsigned long addr;
-+
-+ addr = plat_dma_addr_to_phys(dma_address);
-+ dma_cache_wback_inv(addr, size);
-+ }
-+
-+ plat_unmap_dma_mem(dma_address);
-+}
-+
-+EXPORT_SYMBOL(dma_unmap_page);
-+
-+void dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries,
-+ enum dma_data_direction direction)
-+{
-+ unsigned long addr;
-+ int i;
-+
-+ BUG_ON(direction == DMA_NONE);
-+
-+ for (i = 0; i < nhwentries; i++, sg++) {
-+ if (!plat_device_is_coherent(dev) &&
-+ direction != DMA_TO_DEVICE) {
-+ addr = (unsigned long) page_address(sg->page);
-+ if (addr)
-+ __dma_sync(addr + sg->offset, sg->length,
-+ direction);
-+ }
-+ plat_unmap_dma_mem(sg->dma_address);
-+ }
-+}
-+
-+EXPORT_SYMBOL(dma_unmap_sg);
-+
-+void dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle,
-+ size_t size, enum dma_data_direction direction)
-+{
-+ BUG_ON(direction == DMA_NONE);
-+
-+ if (cpu_is_noncoherent_r10000(dev)) {
-+ unsigned long addr;
-+
-+ addr = PAGE_OFFSET + plat_dma_addr_to_phys(dma_handle);
-+ __dma_sync(addr, size, direction);
-+ }
-+}
-+
-+EXPORT_SYMBOL(dma_sync_single_for_cpu);
-+
-+void dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle,
-+ size_t size, enum dma_data_direction direction)
-+{
-+ BUG_ON(direction == DMA_NONE);
-+
-+ if (cpu_is_noncoherent_r10000(dev)) {
-+ unsigned long addr;
-+
-+ addr = plat_dma_addr_to_phys(dma_handle);
-+ __dma_sync(addr, size, direction);
-+ }
-+}
-+
-+EXPORT_SYMBOL(dma_sync_single_for_device);
-+
-+void dma_sync_single_range_for_cpu(struct device *dev, dma_addr_t dma_handle,
-+ unsigned long offset, size_t size, enum dma_data_direction direction)
-+{
-+ BUG_ON(direction == DMA_NONE);
-+
-+ if (cpu_is_noncoherent_r10000(dev)) {
-+ unsigned long addr;
-+
-+ addr = PAGE_OFFSET + plat_dma_addr_to_phys(dma_handle);
-+ __dma_sync(addr + offset, size, direction);
-+ }
-+}
-+
-+EXPORT_SYMBOL(dma_sync_single_range_for_cpu);
-+
-+void dma_sync_single_range_for_device(struct device *dev, dma_addr_t dma_handle,
-+ unsigned long offset, size_t size, enum dma_data_direction direction)
-+{
-+ BUG_ON(direction == DMA_NONE);
-+
-+ if (cpu_is_noncoherent_r10000(dev)) {
-+ unsigned long addr;
-+
-+ addr = PAGE_OFFSET + plat_dma_addr_to_phys(dma_handle);
-+ __dma_sync(addr + offset, size, direction);
-+ }
-+}
-+
-+EXPORT_SYMBOL(dma_sync_single_range_for_device);
-+
-+void dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nelems,
-+ enum dma_data_direction direction)
-+{
-+ int i;
-+
-+ BUG_ON(direction == DMA_NONE);
-+
-+ /* Make sure that gcc doesn't leave the empty loop body. */
-+ for (i = 0; i < nelems; i++, sg++) {
-+ if (!plat_device_is_coherent(dev))
-+ __dma_sync((unsigned long)page_address(sg->page),
-+ sg->length, direction);
-+ plat_unmap_dma_mem(sg->dma_address);
-+ }
-+}
-+
-+EXPORT_SYMBOL(dma_sync_sg_for_cpu);
-+
-+void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nelems,
-+ enum dma_data_direction direction)
-+{
-+ int i;
-+
-+ BUG_ON(direction == DMA_NONE);
-+
-+ /* Make sure that gcc doesn't leave the empty loop body. */
-+ for (i = 0; i < nelems; i++, sg++) {
-+ if (!plat_device_is_coherent(dev))
-+ __dma_sync((unsigned long)page_address(sg->page),
-+ sg->length, direction);
-+ plat_unmap_dma_mem(sg->dma_address);
-+ }
-+}
-+
-+EXPORT_SYMBOL(dma_sync_sg_for_device);
-+
-+int dma_mapping_error(dma_addr_t dma_addr)
-+{
-+ return 0;
-+}
-+
-+EXPORT_SYMBOL(dma_mapping_error);
-+
-+int dma_supported(struct device *dev, u64 mask)
-+{
-+ /*
-+ * we fall back to GFP_DMA when the mask isn't all 1s,
-+ * so we can't guarantee allocations that must be
-+ * within a tighter range than GFP_DMA..
-+ */
-+ if (mask < 0x00ffffff)
-+ return 0;
-+
-+ return 1;
-+}
-+
-+EXPORT_SYMBOL(dma_supported);
-+
-+int dma_is_consistent(dma_addr_t dma_addr)
-+{
-+ return plat_device_is_coherent(NULL);
-+}
-+
-+EXPORT_SYMBOL(dma_is_consistent);
-+
-+void dma_cache_sync(void *vaddr, size_t size,
-+ enum dma_data_direction direction)
-+{
-+ BUG_ON(direction == DMA_NONE);
-+
-+ if (!plat_device_is_coherent(NULL))
-+ dma_cache_wback_inv((unsigned long)vaddr, size);
-+}
-+
-+EXPORT_SYMBOL(dma_cache_sync);
-diff -urN linux.old/arch/mips/mm/dma-ip27.c linux.dev/arch/mips/mm/dma-ip27.c
---- linux.old/arch/mips/mm/dma-ip27.c 2007-01-10 20:10:37.000000000 +0100
-+++ linux.dev/arch/mips/mm/dma-ip27.c 1970-01-01 01:00:00.000000000 +0100
-@@ -1,257 +0,0 @@
--/*
-- * This file is subject to the terms and conditions of the GNU General Public
-- * License. See the file "COPYING" in the main directory of this archive
-- * for more details.
-- *
-- * Copyright (C) 2000 Ani Joshi <ajoshi@unixbox.com>
-- * Copyright (C) 2000, 2001 Ralf Baechle <ralf@gnu.org>
-- * swiped from i386, and cloned for MIPS by Geert, polished by Ralf.
-- */
--#include <linux/types.h>
--#include <linux/mm.h>
--#include <linux/module.h>
--#include <linux/string.h>
--#include <linux/pci.h>
--
--#include <asm/cache.h>
--#include <asm/pci/bridge.h>
--
--#define pdev_to_baddr(pdev, addr) \
-- (BRIDGE_CONTROLLER(pdev->bus)->baddr + (addr))
--#define dev_to_baddr(dev, addr) \
-- pdev_to_baddr(to_pci_dev(dev), (addr))
--
--void *dma_alloc_noncoherent(struct device *dev, size_t size,
-- dma_addr_t * dma_handle, gfp_t gfp)
--{
-- void *ret;
--
-- /* ignore region specifiers */
-- gfp &= ~(__GFP_DMA | __GFP_HIGHMEM);
--
-- if (dev == NULL || (dev->coherent_dma_mask < 0xffffffff))
-- gfp |= GFP_DMA;
-- ret = (void *) __get_free_pages(gfp, get_order(size));
--
-- if (ret != NULL) {
-- memset(ret, 0, size);
-- *dma_handle = dev_to_baddr(dev, virt_to_phys(ret));
-- }
--
-- return ret;
--}
--
--EXPORT_SYMBOL(dma_alloc_noncoherent);
--
--void *dma_alloc_coherent(struct device *dev, size_t size,
-- dma_addr_t * dma_handle, gfp_t gfp)
-- __attribute__((alias("dma_alloc_noncoherent")));
--
--EXPORT_SYMBOL(dma_alloc_coherent);
--
--void dma_free_noncoherent(struct device *dev, size_t size, void *vaddr,
-- dma_addr_t dma_handle)
--{
-- unsigned long addr = (unsigned long) vaddr;
--
-- free_pages(addr, get_order(size));
--}
--
--EXPORT_SYMBOL(dma_free_noncoherent);
--
--void dma_free_coherent(struct device *dev, size_t size, void *vaddr,
-- dma_addr_t dma_handle) __attribute__((alias("dma_free_noncoherent")));
--
--EXPORT_SYMBOL(dma_free_coherent);
--
--dma_addr_t dma_map_single(struct device *dev, void *ptr, size_t size,
-- enum dma_data_direction direction)
--{
-- BUG_ON(direction == DMA_NONE);
--
-- return dev_to_baddr(dev, __pa(ptr));
--}
--
--EXPORT_SYMBOL(dma_map_single);
--
--void dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size,
-- enum dma_data_direction direction)
--{
-- BUG_ON(direction == DMA_NONE);
--}
--
--EXPORT_SYMBOL(dma_unmap_single);
--
--int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
-- enum dma_data_direction direction)
--{
-- int i;
--
-- BUG_ON(direction == DMA_NONE);
--
-- for (i = 0; i < nents; i++, sg++) {
-- sg->dma_address = (dma_addr_t) dev_to_baddr(dev,
-- page_to_phys(sg->page) + sg->offset);
-- }
--
-- return nents;
--}
--
--EXPORT_SYMBOL(dma_map_sg);
--
--dma_addr_t dma_map_page(struct device *dev, struct page *page,
-- unsigned long offset, size_t size, enum dma_data_direction direction)
--{
-- BUG_ON(direction == DMA_NONE);
--
-- return dev_to_baddr(dev, page_to_phys(page) + offset);
--}
--
--EXPORT_SYMBOL(dma_map_page);
--
--void dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size,
-- enum dma_data_direction direction)
--{
-- BUG_ON(direction == DMA_NONE);
--}
--
--EXPORT_SYMBOL(dma_unmap_page);
--
--void dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries,
-- enum dma_data_direction direction)
--{
-- BUG_ON(direction == DMA_NONE);
--}
--
--EXPORT_SYMBOL(dma_unmap_sg);
--
--void dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle, size_t size,
-- enum dma_data_direction direction)
--{
-- BUG_ON(direction == DMA_NONE);
--}
--
--EXPORT_SYMBOL(dma_sync_single_for_cpu);
--
--void dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle, size_t size,
-- enum dma_data_direction direction)
--{
-- BUG_ON(direction == DMA_NONE);
--}
--
--EXPORT_SYMBOL(dma_sync_single_for_device);
--
--void dma_sync_single_range_for_cpu(struct device *dev, dma_addr_t dma_handle,
-- unsigned long offset, size_t size,
-- enum dma_data_direction direction)
--{
-- BUG_ON(direction == DMA_NONE);
--}
--
--EXPORT_SYMBOL(dma_sync_single_range_for_cpu);
--
--void dma_sync_single_range_for_device(struct device *dev, dma_addr_t dma_handle,
-- unsigned long offset, size_t size,
-- enum dma_data_direction direction)
--{
-- BUG_ON(direction == DMA_NONE);
--}
--
--EXPORT_SYMBOL(dma_sync_single_range_for_device);
--
--void dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nelems,
-- enum dma_data_direction direction)
--{
-- BUG_ON(direction == DMA_NONE);
--}
--
--EXPORT_SYMBOL(dma_sync_sg_for_cpu);
--
--void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nelems,
-- enum dma_data_direction direction)
--{
-- BUG_ON(direction == DMA_NONE);
--}
--
--EXPORT_SYMBOL(dma_sync_sg_for_device);
--
--int dma_mapping_error(dma_addr_t dma_addr)
--{
-- return 0;
--}
--
--EXPORT_SYMBOL(dma_mapping_error);
--
--int dma_supported(struct device *dev, u64 mask)
--{
-- /*
-- * we fall back to GFP_DMA when the mask isn't all 1s,
-- * so we can't guarantee allocations that must be
-- * within a tighter range than GFP_DMA..
-- */
-- if (mask < 0x00ffffff)
-- return 0;
--
-- return 1;
--}
--
--EXPORT_SYMBOL(dma_supported);
--
--int dma_is_consistent(dma_addr_t dma_addr)
--{
-- return 1;
--}
--
--EXPORT_SYMBOL(dma_is_consistent);
--
--void dma_cache_sync(void *vaddr, size_t size,
-- enum dma_data_direction direction)
--{
-- BUG_ON(direction == DMA_NONE);
--}
--
--EXPORT_SYMBOL(dma_cache_sync);
--
--dma64_addr_t pci_dac_page_to_dma(struct pci_dev *pdev,
-- struct page *page, unsigned long offset, int direction)
--{
-- dma64_addr_t addr = page_to_phys(page) + offset;
--
-- return (dma64_addr_t) pdev_to_baddr(pdev, addr);
--}
--
--EXPORT_SYMBOL(pci_dac_page_to_dma);
--
--struct page *pci_dac_dma_to_page(struct pci_dev *pdev,
-- dma64_addr_t dma_addr)
--{
-- struct bridge_controller *bc = BRIDGE_CONTROLLER(pdev->bus);
--
-- return pfn_to_page((dma_addr - bc->baddr) >> PAGE_SHIFT);
--}
--
--EXPORT_SYMBOL(pci_dac_dma_to_page);
--
--unsigned long pci_dac_dma_to_offset(struct pci_dev *pdev,
-- dma64_addr_t dma_addr)
--{
-- return dma_addr & ~PAGE_MASK;
--}
--
--EXPORT_SYMBOL(pci_dac_dma_to_offset);
--
--void pci_dac_dma_sync_single_for_cpu(struct pci_dev *pdev,
-- dma64_addr_t dma_addr, size_t len, int direction)
--{
-- BUG_ON(direction == PCI_DMA_NONE);
--}
--
--EXPORT_SYMBOL(pci_dac_dma_sync_single_for_cpu);
--
--void pci_dac_dma_sync_single_for_device(struct pci_dev *pdev,
-- dma64_addr_t dma_addr, size_t len, int direction)
--{
-- BUG_ON(direction == PCI_DMA_NONE);
--}
--
--EXPORT_SYMBOL(pci_dac_dma_sync_single_for_device);
-diff -urN linux.old/arch/mips/mm/dma-ip32.c linux.dev/arch/mips/mm/dma-ip32.c
---- linux.old/arch/mips/mm/dma-ip32.c 2007-01-10 20:10:37.000000000 +0100
-+++ linux.dev/arch/mips/mm/dma-ip32.c 1970-01-01 01:00:00.000000000 +0100
-@@ -1,382 +0,0 @@
--/*
-- * This file is subject to the terms and conditions of the GNU General Public
-- * License. See the file "COPYING" in the main directory of this archive
-- * for more details.
-- *
-- * Copyright (C) 2000 Ani Joshi <ajoshi@unixbox.com>
-- * Copyright (C) 2000, 2001 Ralf Baechle <ralf@gnu.org>
-- * Copyright (C) 2005 Ilya A. Volynets-Evenbakh <ilya@total-knowledge.com>
-- * swiped from i386, and cloned for MIPS by Geert, polished by Ralf.
-- * IP32 changes by Ilya.
-- */
--#include <linux/types.h>
--#include <linux/mm.h>
--#include <linux/module.h>
--#include <linux/string.h>
--#include <linux/dma-mapping.h>
--
--#include <asm/cache.h>
--#include <asm/io.h>
--#include <asm/ip32/crime.h>
--
--/*
-- * Warning on the terminology - Linux calls an uncached area coherent;
-- * MIPS terminology calls memory areas with hardware maintained coherency
-- * coherent.
-- */
--
--/*
-- * Few notes.
-- * 1. CPU sees memory as two chunks: 0-256M@0x0, and the rest @0x40000000+256M
-- * 2. PCI sees memory as one big chunk @0x0 (or we could use 0x40000000 for native-endian)
-- * 3. All other devices see memory as one big chunk at 0x40000000
-- * 4. Non-PCI devices will pass NULL as struct device*
-- * Thus we translate differently, depending on device.
-- */
--
--#define RAM_OFFSET_MASK 0x3fffffff
--
--void *dma_alloc_noncoherent(struct device *dev, size_t size,
-- dma_addr_t * dma_handle, gfp_t gfp)
--{
-- void *ret;
-- /* ignore region specifiers */
-- gfp &= ~(__GFP_DMA | __GFP_HIGHMEM);
--
-- if (dev == NULL || (dev->coherent_dma_mask < 0xffffffff))
-- gfp |= GFP_DMA;
-- ret = (void *) __get_free_pages(gfp, get_order(size));
--
-- if (ret != NULL) {
-- unsigned long addr = virt_to_phys(ret)&RAM_OFFSET_MASK;
-- memset(ret, 0, size);
-- if(dev==NULL)
-- addr+= CRIME_HI_MEM_BASE;
-- *dma_handle = addr;
-- }
--
-- return ret;
--}
--
--EXPORT_SYMBOL(dma_alloc_noncoherent);
--
--void *dma_alloc_coherent(struct device *dev, size_t size,
-- dma_addr_t * dma_handle, gfp_t gfp)
--{
-- void *ret;
--
-- ret = dma_alloc_noncoherent(dev, size, dma_handle, gfp);
-- if (ret) {
-- dma_cache_wback_inv((unsigned long) ret, size);
-- ret = UNCAC_ADDR(ret);
-- }
--
-- return ret;
--}
--
--EXPORT_SYMBOL(dma_alloc_coherent);
--
--void dma_free_noncoherent(struct device *dev, size_t size, void *vaddr,
-- dma_addr_t dma_handle)
--{
-- free_pages((unsigned long) vaddr, get_order(size));
--}
--
--EXPORT_SYMBOL(dma_free_noncoherent);
--
--void dma_free_coherent(struct device *dev, size_t size, void *vaddr,
-- dma_addr_t dma_handle)
--{
-- unsigned long addr = (unsigned long) vaddr;
--
-- addr = CAC_ADDR(addr);
-- free_pages(addr, get_order(size));
--}
--
--EXPORT_SYMBOL(dma_free_coherent);
--
--static inline void __dma_sync(unsigned long addr, size_t size,
-- enum dma_data_direction direction)
--{
-- switch (direction) {
-- case DMA_TO_DEVICE:
-- dma_cache_wback(addr, size);
-- break;
--
-- case DMA_FROM_DEVICE:
-- dma_cache_inv(addr, size);
-- break;
--
-- case DMA_BIDIRECTIONAL:
-- dma_cache_wback_inv(addr, size);
-- break;
--
-- default:
-- BUG();
-- }
--}
--
--dma_addr_t dma_map_single(struct device *dev, void *ptr, size_t size,
-- enum dma_data_direction direction)
--{
-- unsigned long addr = (unsigned long) ptr;
--
-- switch (direction) {
-- case DMA_TO_DEVICE:
-- dma_cache_wback(addr, size);
-- break;
--
-- case DMA_FROM_DEVICE:
-- dma_cache_inv(addr, size);
-- break;
--
-- case DMA_BIDIRECTIONAL:
-- dma_cache_wback_inv(addr, size);
-- break;
--
-- default:
-- BUG();
-- }
--
-- addr = virt_to_phys(ptr)&RAM_OFFSET_MASK;
-- if(dev == NULL)
-- addr+=CRIME_HI_MEM_BASE;
-- return (dma_addr_t)addr;
--}
--
--EXPORT_SYMBOL(dma_map_single);
--
--void dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size,
-- enum dma_data_direction direction)
--{
-- switch (direction) {
-- case DMA_TO_DEVICE:
-- break;
--
-- case DMA_FROM_DEVICE:
-- break;
--
-- case DMA_BIDIRECTIONAL:
-- break;
--
-- default:
-- BUG();
-- }
--}
--
--EXPORT_SYMBOL(dma_unmap_single);
--
--int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
-- enum dma_data_direction direction)
--{
-- int i;
--
-- BUG_ON(direction == DMA_NONE);
--
-- for (i = 0; i < nents; i++, sg++) {
-- unsigned long addr;
--
-- addr = (unsigned long) page_address(sg->page)+sg->offset;
-- if (addr)
-- __dma_sync(addr, sg->length, direction);
-- addr = __pa(addr)&RAM_OFFSET_MASK;
-- if(dev == NULL)
-- addr += CRIME_HI_MEM_BASE;
-- sg->dma_address = (dma_addr_t)addr;
-- }
--
-- return nents;
--}
--
--EXPORT_SYMBOL(dma_map_sg);
--
--dma_addr_t dma_map_page(struct device *dev, struct page *page,
-- unsigned long offset, size_t size, enum dma_data_direction direction)
--{
-- unsigned long addr;
--
-- BUG_ON(direction == DMA_NONE);
--
-- addr = (unsigned long) page_address(page) + offset;
-- dma_cache_wback_inv(addr, size);
-- addr = __pa(addr)&RAM_OFFSET_MASK;
-- if(dev == NULL)
-- addr += CRIME_HI_MEM_BASE;
--
-- return (dma_addr_t)addr;
--}
--
--EXPORT_SYMBOL(dma_map_page);
--
--void dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size,
-- enum dma_data_direction direction)
--{
-- BUG_ON(direction == DMA_NONE);
--
-- if (direction != DMA_TO_DEVICE) {
-- unsigned long addr;
--
-- dma_address&=RAM_OFFSET_MASK;
-- addr = dma_address + PAGE_OFFSET;
-- if(dma_address>=256*1024*1024)
-- addr+=CRIME_HI_MEM_BASE;
-- dma_cache_wback_inv(addr, size);
-- }
--}
--
--EXPORT_SYMBOL(dma_unmap_page);
--
--void dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries,
-- enum dma_data_direction direction)
--{
-- unsigned long addr;
-- int i;
--
-- BUG_ON(direction == DMA_NONE);
--
-- if (direction == DMA_TO_DEVICE)
-- return;
--
-- for (i = 0; i < nhwentries; i++, sg++) {
-- addr = (unsigned long) page_address(sg->page);
-- if (!addr)
-- continue;
-- dma_cache_wback_inv(addr + sg->offset, sg->length);
-- }
--}
--
--EXPORT_SYMBOL(dma_unmap_sg);
--
--void dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle,
-- size_t size, enum dma_data_direction direction)
--{
-- unsigned long addr;
--
-- BUG_ON(direction == DMA_NONE);
--
-- dma_handle&=RAM_OFFSET_MASK;
-- addr = dma_handle + PAGE_OFFSET;
-- if(dma_handle>=256*1024*1024)
-- addr+=CRIME_HI_MEM_BASE;
-- __dma_sync(addr, size, direction);
--}
--
--EXPORT_SYMBOL(dma_sync_single_for_cpu);
--
--void dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle,
-- size_t size, enum dma_data_direction direction)
--{
-- unsigned long addr;
--
-- BUG_ON(direction == DMA_NONE);
--
-- dma_handle&=RAM_OFFSET_MASK;
-- addr = dma_handle + PAGE_OFFSET;
-- if(dma_handle>=256*1024*1024)
-- addr+=CRIME_HI_MEM_BASE;
-- __dma_sync(addr, size, direction);
--}
--
--EXPORT_SYMBOL(dma_sync_single_for_device);
--
--void dma_sync_single_range_for_cpu(struct device *dev, dma_addr_t dma_handle,
-- unsigned long offset, size_t size, enum dma_data_direction direction)
--{
-- unsigned long addr;
--
-- BUG_ON(direction == DMA_NONE);
--
-- dma_handle&=RAM_OFFSET_MASK;
-- addr = dma_handle + offset + PAGE_OFFSET;
-- if(dma_handle>=256*1024*1024)
-- addr+=CRIME_HI_MEM_BASE;
-- __dma_sync(addr, size, direction);
--}
--
--EXPORT_SYMBOL(dma_sync_single_range_for_cpu);
--
--void dma_sync_single_range_for_device(struct device *dev, dma_addr_t dma_handle,
-- unsigned long offset, size_t size, enum dma_data_direction direction)
--{
-- unsigned long addr;
--
-- BUG_ON(direction == DMA_NONE);
--
-- dma_handle&=RAM_OFFSET_MASK;
-- addr = dma_handle + offset + PAGE_OFFSET;
-- if(dma_handle>=256*1024*1024)
-- addr+=CRIME_HI_MEM_BASE;
-- __dma_sync(addr, size, direction);
--}
--
--EXPORT_SYMBOL(dma_sync_single_range_for_device);
--
--void dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nelems,
-- enum dma_data_direction direction)
--{
-- int i;
--
-- BUG_ON(direction == DMA_NONE);
--
-- /* Make sure that gcc doesn't leave the empty loop body. */
-- for (i = 0; i < nelems; i++, sg++)
-- __dma_sync((unsigned long)page_address(sg->page),
-- sg->length, direction);
--}
--
--EXPORT_SYMBOL(dma_sync_sg_for_cpu);
--
--void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nelems,
-- enum dma_data_direction direction)
--{
-- int i;
--
-- BUG_ON(direction == DMA_NONE);
--
-- /* Make sure that gcc doesn't leave the empty loop body. */
-- for (i = 0; i < nelems; i++, sg++)
-- __dma_sync((unsigned long)page_address(sg->page),
-- sg->length, direction);
--}
--
--EXPORT_SYMBOL(dma_sync_sg_for_device);
--
--int dma_mapping_error(dma_addr_t dma_addr)
--{
-- return 0;
--}
--
--EXPORT_SYMBOL(dma_mapping_error);
--
--int dma_supported(struct device *dev, u64 mask)
--{
-- /*
-- * we fall back to GFP_DMA when the mask isn't all 1s,
-- * so we can't guarantee allocations that must be
-- * within a tighter range than GFP_DMA..
-- */
-- if (mask < 0x00ffffff)
-- return 0;
--
-- return 1;
--}
--
--EXPORT_SYMBOL(dma_supported);
--
--int dma_is_consistent(dma_addr_t dma_addr)
--{
-- return 1;
--}
--
--EXPORT_SYMBOL(dma_is_consistent);
--
--void dma_cache_sync(void *vaddr, size_t size, enum dma_data_direction direction)
--{
-- if (direction == DMA_NONE)
-- return;
--
-- dma_cache_wback_inv((unsigned long)vaddr, size);
--}
--
--EXPORT_SYMBOL(dma_cache_sync);
--
-diff -urN linux.old/arch/mips/mm/dma-noncoherent.c linux.dev/arch/mips/mm/dma-noncoherent.c
---- linux.old/arch/mips/mm/dma-noncoherent.c 2007-01-10 20:10:37.000000000 +0100
-+++ linux.dev/arch/mips/mm/dma-noncoherent.c 1970-01-01 01:00:00.000000000 +0100
-@@ -1,369 +0,0 @@
--/*
-- * This file is subject to the terms and conditions of the GNU General Public
-- * License. See the file "COPYING" in the main directory of this archive
-- * for more details.
-- *
-- * Copyright (C) 2000 Ani Joshi <ajoshi@unixbox.com>
-- * Copyright (C) 2000, 2001 Ralf Baechle <ralf@gnu.org>
-- * swiped from i386, and cloned for MIPS by Geert, polished by Ralf.
-- */
--#include <linux/types.h>
--#include <linux/mm.h>
--#include <linux/module.h>
--#include <linux/string.h>
--#include <linux/dma-mapping.h>
--
--#include <asm/cache.h>
--#include <asm/io.h>
--
--/*
-- * Warning on the terminology - Linux calls an uncached area coherent;
-- * MIPS terminology calls memory areas with hardware maintained coherency
-- * coherent.
-- */
--
--void *dma_alloc_noncoherent(struct device *dev, size_t size,
-- dma_addr_t * dma_handle, gfp_t gfp)
--{
-- void *ret;
-- /* ignore region specifiers */
-- gfp &= ~(__GFP_DMA | __GFP_HIGHMEM);
--
-- if (dev == NULL || (dev->coherent_dma_mask < 0xffffffff))
-- gfp |= GFP_DMA;
-- ret = (void *) __get_free_pages(gfp, get_order(size));
--
-- if (ret != NULL) {
-- memset(ret, 0, size);
-- *dma_handle = virt_to_phys(ret);
-- }
--
-- return ret;
--}
--
--EXPORT_SYMBOL(dma_alloc_noncoherent);
--
--void *dma_alloc_coherent(struct device *dev, size_t size,
-- dma_addr_t * dma_handle, gfp_t gfp)
--{
-- void *ret;
--
-- ret = dma_alloc_noncoherent(dev, size, dma_handle, gfp);
-- if (ret) {
-- dma_cache_wback_inv((unsigned long) ret, size);
-- ret = UNCAC_ADDR(ret);
-- }
--
-- return ret;
--}
--
--EXPORT_SYMBOL(dma_alloc_coherent);
--
--void dma_free_noncoherent(struct device *dev, size_t size, void *vaddr,
-- dma_addr_t dma_handle)
--{
-- free_pages((unsigned long) vaddr, get_order(size));
--}
--
--EXPORT_SYMBOL(dma_free_noncoherent);
--
--void dma_free_coherent(struct device *dev, size_t size, void *vaddr,
-- dma_addr_t dma_handle)
--{
-- unsigned long addr = (unsigned long) vaddr;
--
-- addr = CAC_ADDR(addr);
-- free_pages(addr, get_order(size));
--}
--
--EXPORT_SYMBOL(dma_free_coherent);
--
--static inline void __dma_sync(unsigned long addr, size_t size,
-- enum dma_data_direction direction)
--{
-- switch (direction) {
-- case DMA_TO_DEVICE:
-- dma_cache_wback(addr, size);
-- break;
--
-- case DMA_FROM_DEVICE:
-- dma_cache_inv(addr, size);
-- break;
--
-- case DMA_BIDIRECTIONAL:
-- dma_cache_wback_inv(addr, size);
-- break;
--
-- default:
-- BUG();
-- }
--}
--
--dma_addr_t dma_map_single(struct device *dev, void *ptr, size_t size,
-- enum dma_data_direction direction)
--{
-- unsigned long addr = (unsigned long) ptr;
--
-- __dma_sync(addr, size, direction);
--
-- return virt_to_phys(ptr);
--}
--
--EXPORT_SYMBOL(dma_map_single);
--
--void dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size,
-- enum dma_data_direction direction)
--{
-- unsigned long addr;
-- addr = dma_addr + PAGE_OFFSET;
--
-- //__dma_sync(addr, size, direction);
--}
--
--EXPORT_SYMBOL(dma_unmap_single);
--
--int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
-- enum dma_data_direction direction)
--{
-- int i;
--
-- BUG_ON(direction == DMA_NONE);
--
-- for (i = 0; i < nents; i++, sg++) {
-- unsigned long addr;
--
-- addr = (unsigned long) page_address(sg->page);
-- if (addr) {
-- __dma_sync(addr + sg->offset, sg->length, direction);
-- sg->dma_address = (dma_addr_t)page_to_phys(sg->page)
-- + sg->offset;
-- }
-- }
--
-- return nents;
--}
--
--EXPORT_SYMBOL(dma_map_sg);
--
--dma_addr_t dma_map_page(struct device *dev, struct page *page,
-- unsigned long offset, size_t size, enum dma_data_direction direction)
--{
-- unsigned long addr;
--
-- BUG_ON(direction == DMA_NONE);
--
-- addr = (unsigned long) page_address(page) + offset;
-- dma_cache_wback_inv(addr, size);
--
-- return page_to_phys(page) + offset;
--}
--
--EXPORT_SYMBOL(dma_map_page);
--
--void dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size,
-- enum dma_data_direction direction)
--{
-- BUG_ON(direction == DMA_NONE);
--
-- if (direction != DMA_TO_DEVICE) {
-- unsigned long addr;
--
-- addr = dma_address + PAGE_OFFSET;
-- dma_cache_wback_inv(addr, size);
-- }
--}
--
--EXPORT_SYMBOL(dma_unmap_page);
--
--void dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries,
-- enum dma_data_direction direction)
--{
-- unsigned long addr;
-- int i;
--
-- BUG_ON(direction == DMA_NONE);
--
-- if (direction == DMA_TO_DEVICE)
-- return;
--
-- for (i = 0; i < nhwentries; i++, sg++) {
-- addr = (unsigned long) page_address(sg->page);
-- if (addr)
-- __dma_sync(addr + sg->offset, sg->length, direction);
-- }
--}
--
--EXPORT_SYMBOL(dma_unmap_sg);
--
--void dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle,
-- size_t size, enum dma_data_direction direction)
--{
-- unsigned long addr;
--
-- BUG_ON(direction == DMA_NONE);
--
-- addr = dma_handle + PAGE_OFFSET;
-- __dma_sync(addr, size, direction);
--}
--
--EXPORT_SYMBOL(dma_sync_single_for_cpu);
--
--void dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle,
-- size_t size, enum dma_data_direction direction)
--{
-- unsigned long addr;
--
-- BUG_ON(direction == DMA_NONE);
--
-- addr = dma_handle + PAGE_OFFSET;
-- __dma_sync(addr, size, direction);
--}
--
--EXPORT_SYMBOL(dma_sync_single_for_device);
--
--void dma_sync_single_range_for_cpu(struct device *dev, dma_addr_t dma_handle,
-- unsigned long offset, size_t size, enum dma_data_direction direction)
--{
-- unsigned long addr;
--
-- BUG_ON(direction == DMA_NONE);
--
-- addr = dma_handle + offset + PAGE_OFFSET;
-- __dma_sync(addr, size, direction);
--}
--
--EXPORT_SYMBOL(dma_sync_single_range_for_cpu);
--
--void dma_sync_single_range_for_device(struct device *dev, dma_addr_t dma_handle,
-- unsigned long offset, size_t size, enum dma_data_direction direction)
--{
-- unsigned long addr;
--
-- BUG_ON(direction == DMA_NONE);
--
-- addr = dma_handle + offset + PAGE_OFFSET;
-- __dma_sync(addr, size, direction);
--}
--
--EXPORT_SYMBOL(dma_sync_single_range_for_device);
--
--void dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nelems,
-- enum dma_data_direction direction)
--{
-- int i;
--
-- BUG_ON(direction == DMA_NONE);
--
-- /* Make sure that gcc doesn't leave the empty loop body. */
-- for (i = 0; i < nelems; i++, sg++)
-- __dma_sync((unsigned long)page_address(sg->page),
-- sg->length, direction);
--}
--
--EXPORT_SYMBOL(dma_sync_sg_for_cpu);
--
--void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nelems,
-- enum dma_data_direction direction)
--{
-- int i;
--
-- BUG_ON(direction == DMA_NONE);
--
-- /* Make sure that gcc doesn't leave the empty loop body. */
-- for (i = 0; i < nelems; i++, sg++)
-- __dma_sync((unsigned long)page_address(sg->page),
-- sg->length, direction);
--}
--
--EXPORT_SYMBOL(dma_sync_sg_for_device);
--
--int dma_mapping_error(dma_addr_t dma_addr)
--{
-- return 0;
--}
--
--EXPORT_SYMBOL(dma_mapping_error);
--
--int dma_supported(struct device *dev, u64 mask)
--{
-- /*
-- * we fall back to GFP_DMA when the mask isn't all 1s,
-- * so we can't guarantee allocations that must be
-- * within a tighter range than GFP_DMA..
-- */
-- if (mask < 0x00ffffff)
-- return 0;
--
-- return 1;
--}
--
--EXPORT_SYMBOL(dma_supported);
--
--int dma_is_consistent(dma_addr_t dma_addr)
--{
-- return 1;
--}
--
--EXPORT_SYMBOL(dma_is_consistent);
--
--void dma_cache_sync(void *vaddr, size_t size, enum dma_data_direction direction)
--{
-- if (direction == DMA_NONE)
-- return;
--
-- dma_cache_wback_inv((unsigned long)vaddr, size);
--}
--
--EXPORT_SYMBOL(dma_cache_sync);
--
--/* The DAC routines are a PCIism.. */
--
--#ifdef CONFIG_PCI
--
--#include <linux/pci.h>
--
--dma64_addr_t pci_dac_page_to_dma(struct pci_dev *pdev,
-- struct page *page, unsigned long offset, int direction)
--{
-- return (dma64_addr_t)page_to_phys(page) + offset;
--}
--
--EXPORT_SYMBOL(pci_dac_page_to_dma);
--
--struct page *pci_dac_dma_to_page(struct pci_dev *pdev,
-- dma64_addr_t dma_addr)
--{
-- return mem_map + (dma_addr >> PAGE_SHIFT);
--}
--
--EXPORT_SYMBOL(pci_dac_dma_to_page);
--
--unsigned long pci_dac_dma_to_offset(struct pci_dev *pdev,
-- dma64_addr_t dma_addr)
--{
-- return dma_addr & ~PAGE_MASK;
--}
--
--EXPORT_SYMBOL(pci_dac_dma_to_offset);
--
--void pci_dac_dma_sync_single_for_cpu(struct pci_dev *pdev,
-- dma64_addr_t dma_addr, size_t len, int direction)
--{
-- BUG_ON(direction == PCI_DMA_NONE);
--
-- dma_cache_wback_inv(dma_addr + PAGE_OFFSET, len);
--}
--
--EXPORT_SYMBOL(pci_dac_dma_sync_single_for_cpu);
--
--void pci_dac_dma_sync_single_for_device(struct pci_dev *pdev,
-- dma64_addr_t dma_addr, size_t len, int direction)
--{
-- BUG_ON(direction == PCI_DMA_NONE);
--
-- dma_cache_wback_inv(dma_addr + PAGE_OFFSET, len);
--}
--
--EXPORT_SYMBOL(pci_dac_dma_sync_single_for_device);
--
--#endif /* CONFIG_PCI */
-diff -urN linux.old/arch/mips/mm/Makefile linux.dev/arch/mips/mm/Makefile
---- linux.old/arch/mips/mm/Makefile 2007-01-10 20:10:37.000000000 +0100
-+++ linux.dev/arch/mips/mm/Makefile 2007-02-09 20:26:45.376386784 +0100
-@@ -2,8 +2,8 @@
- # Makefile for the Linux/MIPS-specific parts of the memory manager.
- #
-
--obj-y += cache.o extable.o fault.o init.o pgtable.o \
-- tlbex.o tlbex-fault.o
-+obj-y += cache.o dma-default.o extable.o fault.o \
-+ init.o pgtable.o tlbex.o tlbex-fault.o
-
- obj-$(CONFIG_32BIT) += ioremap.o pgtable-32.o
- obj-$(CONFIG_64BIT) += pgtable-64.o
-@@ -32,14 +32,4 @@
- obj-$(CONFIG_RM7000_CPU_SCACHE) += sc-rm7k.o
- obj-$(CONFIG_MIPS_CPU_SCACHE) += sc-mips.o
-
--#
--# Choose one DMA coherency model
--#
--ifndef CONFIG_OWN_DMA
--obj-$(CONFIG_DMA_COHERENT) += dma-coherent.o
--obj-$(CONFIG_DMA_NONCOHERENT) += dma-noncoherent.o
--endif
--obj-$(CONFIG_DMA_IP27) += dma-ip27.o
--obj-$(CONFIG_DMA_IP32) += dma-ip32.o
--
- EXTRA_AFLAGS := $(CFLAGS)
-diff -urN linux.old/arch/mips/pci/Makefile linux.dev/arch/mips/pci/Makefile
---- linux.old/arch/mips/pci/Makefile 2007-01-10 20:10:37.000000000 +0100
-+++ linux.dev/arch/mips/pci/Makefile 2007-02-09 20:26:50.961537712 +0100
-@@ -2,7 +2,7 @@
- # Makefile for the PCI specific kernel interface routines under Linux.
- #
-
--obj-y += pci.o
-+obj-y += pci.o pci-dac.o
-
- #
- # PCI bus host bridge specific code
-diff -urN linux.old/arch/mips/pci/pci-dac.c linux.dev/arch/mips/pci/pci-dac.c
---- linux.old/arch/mips/pci/pci-dac.c 1970-01-01 01:00:00.000000000 +0100
-+++ linux.dev/arch/mips/pci/pci-dac.c 2007-02-09 20:26:50.961537712 +0100
-@@ -0,0 +1,79 @@
-+/*
-+ * This file is subject to the terms and conditions of the GNU General Public
-+ * License. See the file "COPYING" in the main directory of this archive
-+ * for more details.
-+ *
-+ * Copyright (C) 2000 Ani Joshi <ajoshi@unixbox.com>
-+ * Copyright (C) 2000, 2001, 06 Ralf Baechle <ralf@linux-mips.org>
-+ * swiped from i386, and cloned for MIPS by Geert, polished by Ralf.
-+ */
-+
-+#include <linux/types.h>
-+#include <linux/dma-mapping.h>
-+#include <linux/mm.h>
-+#include <linux/module.h>
-+#include <linux/string.h>
-+
-+#include <asm/cache.h>
-+#include <asm/io.h>
-+
-+#include <dma-coherence.h>
-+
-+#include <linux/pci.h>
-+
-+dma64_addr_t pci_dac_page_to_dma(struct pci_dev *pdev,
-+ struct page *page, unsigned long offset, int direction)
-+{
-+ struct device *dev = &pdev->dev;
-+
-+ BUG_ON(direction == DMA_NONE);
-+
-+ if (!plat_device_is_coherent(dev)) {
-+ unsigned long addr;
-+
-+ addr = (unsigned long) page_address(page) + offset;
-+ dma_cache_wback_inv(addr, PAGE_SIZE);
-+ }
-+
-+ return plat_map_dma_mem_page(dev, page) + offset;
-+}
-+
-+EXPORT_SYMBOL(pci_dac_page_to_dma);
-+
-+struct page *pci_dac_dma_to_page(struct pci_dev *pdev,
-+ dma64_addr_t dma_addr)
-+{
-+ return pfn_to_page(plat_dma_addr_to_phys(dma_addr) >> PAGE_SHIFT);
-+}
-+
-+EXPORT_SYMBOL(pci_dac_dma_to_page);
-+
-+unsigned long pci_dac_dma_to_offset(struct pci_dev *pdev,
-+ dma64_addr_t dma_addr)
-+{
-+ return dma_addr & ~PAGE_MASK;
-+}
-+
-+EXPORT_SYMBOL(pci_dac_dma_to_offset);
-+
-+void pci_dac_dma_sync_single_for_cpu(struct pci_dev *pdev,
-+ dma64_addr_t dma_addr, size_t len, int direction)
-+{
-+ BUG_ON(direction == PCI_DMA_NONE);
-+
-+ if (!plat_device_is_coherent(&pdev->dev))
-+ dma_cache_wback_inv(dma_addr + PAGE_OFFSET, len);
-+}
-+
-+EXPORT_SYMBOL(pci_dac_dma_sync_single_for_cpu);
-+
-+void pci_dac_dma_sync_single_for_device(struct pci_dev *pdev,
-+ dma64_addr_t dma_addr, size_t len, int direction)
-+{
-+ BUG_ON(direction == PCI_DMA_NONE);
-+
-+ if (!plat_device_is_coherent(&pdev->dev))
-+ dma_cache_wback_inv(dma_addr + PAGE_OFFSET, len);
-+}
-+
-+EXPORT_SYMBOL(pci_dac_dma_sync_single_for_device);
-diff -urN linux.old/include/asm-mips/mach-generic/dma-coherence.h linux.dev/include/asm-mips/mach-generic/dma-coherence.h
---- linux.old/include/asm-mips/mach-generic/dma-coherence.h 1970-01-01 01:00:00.000000000 +0100
-+++ linux.dev/include/asm-mips/mach-generic/dma-coherence.h 2007-02-09 20:26:50.962537560 +0100
-@@ -0,0 +1,43 @@
-+/*
-+ * This file is subject to the terms and conditions of the GNU General Public
-+ * License. See the file "COPYING" in the main directory of this archive
-+ * for more details.
-+ *
-+ * Copyright (C) 2006 Ralf Baechle <ralf@linux-mips.org>
-+ *
-+ */
-+#ifndef __ASM_MACH_GENERIC_DMA_COHERENCE_H
-+#define __ASM_MACH_GENERIC_DMA_COHERENCE_H
-+
-+struct device;
-+
-+static dma_addr_t plat_map_dma_mem(struct device *dev, void *addr, size_t size)
-+{
-+ return virt_to_phys(addr);
-+}
-+
-+static dma_addr_t plat_map_dma_mem_page(struct device *dev, struct page *page)
-+{
-+ return page_to_phys(page);
-+}
-+
-+static unsigned long plat_dma_addr_to_phys(dma_addr_t dma_addr)
-+{
-+ return dma_addr;
-+}
-+
-+static void plat_unmap_dma_mem(dma_addr_t dma_addr)
-+{
-+}
-+
-+static inline int plat_device_is_coherent(struct device *dev)
-+{
-+#ifdef CONFIG_DMA_COHERENT
-+ return 1;
-+#endif
-+#ifdef CONFIG_DMA_NONCOHERENT
-+ return 0;
-+#endif
-+}
-+
-+#endif /* __ASM_MACH_GENERIC_DMA_COHERENCE_H */
-diff -urN linux.old/include/asm-mips/mach-generic/kmalloc.h linux.dev/include/asm-mips/mach-generic/kmalloc.h
---- linux.old/include/asm-mips/mach-generic/kmalloc.h 2007-01-10 20:10:37.000000000 +0100
-+++ linux.dev/include/asm-mips/mach-generic/kmalloc.h 2007-02-09 20:26:50.962537560 +0100
-@@ -5,6 +5,7 @@
- #ifndef CONFIG_DMA_COHERENT
- /*
- * Total overkill for most systems but need as a safe default.
-+ * Set this one if any device in the system might do non-coherent DMA.
- */
- #define ARCH_KMALLOC_MINALIGN 128
- #endif
-diff -urN linux.old/include/asm-mips/mach-ip27/dma-coherence.h linux.dev/include/asm-mips/mach-ip27/dma-coherence.h
---- linux.old/include/asm-mips/mach-ip27/dma-coherence.h 1970-01-01 01:00:00.000000000 +0100
-+++ linux.dev/include/asm-mips/mach-ip27/dma-coherence.h 2007-02-09 20:26:50.962537560 +0100
-@@ -0,0 +1,49 @@
-+/*
-+ * This file is subject to the terms and conditions of the GNU General Public
-+ * License. See the file "COPYING" in the main directory of this archive
-+ * for more details.
-+ *
-+ * Copyright (C) 2006 Ralf Baechle <ralf@linux-mips.org>
-+ *
-+ */
-+#ifndef __ASM_MACH_IP27_DMA_COHERENCE_H
-+#define __ASM_MACH_IP27_DMA_COHERENCE_H
-+
-+#include <asm/pci/bridge.h>
-+
-+#define pdev_to_baddr(pdev, addr) \
-+ (BRIDGE_CONTROLLER(pdev->bus)->baddr + (addr))
-+#define dev_to_baddr(dev, addr) \
-+ pdev_to_baddr(to_pci_dev(dev), (addr))
-+
-+struct device;
-+
-+static dma_addr_t plat_map_dma_mem(struct device *dev, void *addr, size_t size)
-+{
-+ dma_addr_t pa = dev_to_baddr(dev, virt_to_phys(addr));
-+
-+ return pa;
-+}
-+
-+static dma_addr_t plat_map_dma_mem_page(struct device *dev, struct page *page)
-+{
-+ dma_addr_t pa = dev_to_baddr(dev, page_to_phys(page));
-+
-+ return pa;
-+}
-+
-+static unsigned long plat_dma_addr_to_phys(dma_addr_t dma_addr)
-+{
-+ return dma_addr & (0xffUL << 56);
-+}
-+
-+static void plat_unmap_dma_mem(dma_addr_t dma_addr)
-+{
-+}
-+
-+static inline int plat_device_is_coherent(struct device *dev)
-+{
-+ return 1; /* IP27 non-cohernet mode is unsupported */
-+}
-+
-+#endif /* __ASM_MACH_IP27_DMA_COHERENCE_H */
-diff -urN linux.old/include/asm-mips/mach-ip32/dma-coherence.h linux.dev/include/asm-mips/mach-ip32/dma-coherence.h
---- linux.old/include/asm-mips/mach-ip32/dma-coherence.h 1970-01-01 01:00:00.000000000 +0100
-+++ linux.dev/include/asm-mips/mach-ip32/dma-coherence.h 2007-02-09 20:26:50.963537408 +0100
-@@ -0,0 +1,71 @@
-+/*
-+ * This file is subject to the terms and conditions of the GNU General Public
-+ * License. See the file "COPYING" in the main directory of this archive
-+ * for more details.
-+ *
-+ * Copyright (C) 2006 Ralf Baechle <ralf@linux-mips.org>
-+ *
-+ */
-+#ifndef __ASM_MACH_IP35_DMA_COHERENCE_H
-+#define __ASM_MACH_IP35_DMA_COHERENCE_H
-+
-+#include <asm/ip32/crime.h>
-+
-+struct device;
-+
-+/*
-+ * Few notes.
-+ * 1. CPU sees memory as two chunks: 0-256M@0x0, and the rest @0x40000000+256M
-+ * 2. PCI sees memory as one big chunk @0x0 (or we could use 0x40000000 for
-+ * native-endian)
-+ * 3. All other devices see memory as one big chunk at 0x40000000
-+ * 4. Non-PCI devices will pass NULL as struct device*
-+ *
-+ * Thus we translate differently, depending on device.
-+ */
-+
-+#define RAM_OFFSET_MASK 0x3fffffffUL
-+
-+static dma_addr_t plat_map_dma_mem(struct device *dev, void *addr, size_t size)
-+{
-+ dma_addr_t pa = virt_to_phys(addr) & RAM_OFFSET_MASK;
-+
-+ if (dev == NULL)
-+ pa += CRIME_HI_MEM_BASE;
-+
-+ return pa;
-+}
-+
-+static dma_addr_t plat_map_dma_mem_page(struct device *dev, struct page *page)
-+{
-+ dma_addr_t pa;
-+
-+ pa = page_to_phys(page) & RAM_OFFSET_MASK;
-+
-+ if (dev == NULL)
-+ pa += CRIME_HI_MEM_BASE;
-+
-+ return pa;
-+}
-+
-+/* This is almost certainly wrong but it's what dma-ip32.c used to use */
-+static unsigned long plat_dma_addr_to_phys(dma_addr_t dma_addr)
-+{
-+ unsigned long addr = dma_addr & RAM_OFFSET_MASK;
-+
-+ if (dma_addr >= 256*1024*1024)
-+ addr += CRIME_HI_MEM_BASE;
-+
-+ return addr;
-+}
-+
-+static void plat_unmap_dma_mem(dma_addr_t dma_addr)
-+{
-+}
-+
-+static inline int plat_device_is_coherent(struct device *dev)
-+{
-+ return 0; /* IP32 is non-cohernet */
-+}
-+
-+#endif /* __ASM_MACH_IP35_DMA_COHERENCE_H */
-diff -urN linux.old/include/asm-mips/mach-jazz/dma-coherence.h linux.dev/include/asm-mips/mach-jazz/dma-coherence.h
---- linux.old/include/asm-mips/mach-jazz/dma-coherence.h 1970-01-01 01:00:00.000000000 +0100
-+++ linux.dev/include/asm-mips/mach-jazz/dma-coherence.h 2007-02-09 20:26:50.963537408 +0100
-@@ -0,0 +1,40 @@
-+/*
-+ * This file is subject to the terms and conditions of the GNU General Public
-+ * License. See the file "COPYING" in the main directory of this archive
-+ * for more details.
-+ *
-+ * Copyright (C) 2006 Ralf Baechle <ralf@linux-mips.org>
-+ */
-+#ifndef __ASM_MACH_JAZZ_DMA_COHERENCE_H
-+#define __ASM_MACH_JAZZ_DMA_COHERENCE_H
-+
-+#include <asm/jazzdma.h>
-+
-+struct device;
-+
-+static dma_addr_t plat_map_dma_mem(struct device *dev, void *addr, size_t size)
-+{
-+ return vdma_alloc(virt_to_phys(addr), size);
-+}
-+
-+static dma_addr_t plat_map_dma_mem_page(struct device *dev, struct page *page)
-+{
-+ return vdma_alloc(page_to_phys(page), PAGE_SIZE);
-+}
-+
-+static unsigned long plat_dma_addr_to_phys(dma_addr_t dma_addr)
-+{
-+ return vdma_log2phys(dma_addr);
-+}
-+
-+static void plat_unmap_dma_mem(dma_addr_t dma_addr)
-+{
-+ vdma_free(dma_addr);
-+}
-+
-+static inline int plat_device_is_coherent(struct device *dev)
-+{
-+ return 0;
-+}
-+
-+#endif /* __ASM_MACH_JAZZ_DMA_COHERENCE_H */
projects / openwrt.git / blobdiff