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@@ -1,2028 +0,0 @@
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-Platforms will now have to supply a function dma_device_is_coherent which
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-returns if a particular device participates in the coherence domain. For
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-most platforms this function will always return 0 or 1.
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-
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-Signed-off-by: Ralf Baechle <[email protected]>
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-Signed-off-by: Felix Fietkau <[email protected]>
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-
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-diff -urN linux.old/arch/mips/Kconfig linux.dev/arch/mips/Kconfig
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---- linux.old/arch/mips/Kconfig 2007-01-10 20:10:37.000000000 +0100
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-+++ linux.dev/arch/mips/Kconfig 2007-02-09 20:26:45.367388152 +0100
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-@@ -571,8 +571,6 @@
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- select ARC
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- select ARC32
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- select BOOT_ELF32
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-- select OWN_DMA
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-- select DMA_IP32
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- select DMA_NONCOHERENT
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- select HW_HAS_PCI
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- select R5000_CPU_SCACHE
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-@@ -835,9 +833,6 @@
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- config DMA_NEED_PCI_MAP_STATE
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- bool
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-
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--config OWN_DMA
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-- bool
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--
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- config EARLY_PRINTK
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- bool
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-
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-diff -urN linux.old/arch/mips/mm/dma-coherent.c linux.dev/arch/mips/mm/dma-coherent.c
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---- linux.old/arch/mips/mm/dma-coherent.c 2007-01-10 20:10:37.000000000 +0100
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-+++ linux.dev/arch/mips/mm/dma-coherent.c 1970-01-01 01:00:00.000000000 +0100
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-@@ -1,254 +0,0 @@
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--/*
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-- * This file is subject to the terms and conditions of the GNU General Public
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-- * License. See the file "COPYING" in the main directory of this archive
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-- * for more details.
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-- *
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-- * Copyright (C) 2000 Ani Joshi <[email protected]>
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-- * Copyright (C) 2000, 2001 Ralf Baechle <[email protected]>
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-- * swiped from i386, and cloned for MIPS by Geert, polished by Ralf.
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-- */
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--#include <linux/types.h>
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--#include <linux/dma-mapping.h>
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--#include <linux/mm.h>
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--#include <linux/module.h>
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--#include <linux/string.h>
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--
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--#include <asm/cache.h>
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--#include <asm/io.h>
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--
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--void *dma_alloc_noncoherent(struct device *dev, size_t size,
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-- dma_addr_t * dma_handle, gfp_t gfp)
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--{
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-- void *ret;
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-- /* ignore region specifiers */
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-- gfp &= ~(__GFP_DMA | __GFP_HIGHMEM);
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--
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-- if (dev == NULL || (dev->coherent_dma_mask < 0xffffffff))
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-- gfp |= GFP_DMA;
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-- ret = (void *) __get_free_pages(gfp, get_order(size));
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--
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-- if (ret != NULL) {
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-- memset(ret, 0, size);
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-- *dma_handle = virt_to_phys(ret);
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-- }
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--
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-- return ret;
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--}
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--
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--EXPORT_SYMBOL(dma_alloc_noncoherent);
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--
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--void *dma_alloc_coherent(struct device *dev, size_t size,
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-- dma_addr_t * dma_handle, gfp_t gfp)
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-- __attribute__((alias("dma_alloc_noncoherent")));
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--
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--EXPORT_SYMBOL(dma_alloc_coherent);
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--
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--void dma_free_noncoherent(struct device *dev, size_t size, void *vaddr,
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-- dma_addr_t dma_handle)
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--{
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-- unsigned long addr = (unsigned long) vaddr;
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--
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-- free_pages(addr, get_order(size));
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--}
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--
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--EXPORT_SYMBOL(dma_free_noncoherent);
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--
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--void dma_free_coherent(struct device *dev, size_t size, void *vaddr,
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-- dma_addr_t dma_handle) __attribute__((alias("dma_free_noncoherent")));
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--
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--EXPORT_SYMBOL(dma_free_coherent);
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--
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--dma_addr_t dma_map_single(struct device *dev, void *ptr, size_t size,
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-- enum dma_data_direction direction)
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--{
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-- BUG_ON(direction == DMA_NONE);
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--
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-- return __pa(ptr);
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--}
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--
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--EXPORT_SYMBOL(dma_map_single);
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--
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--void dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size,
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-- enum dma_data_direction direction)
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--{
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-- BUG_ON(direction == DMA_NONE);
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--}
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--
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--EXPORT_SYMBOL(dma_unmap_single);
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--
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--int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
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-- enum dma_data_direction direction)
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--{
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-- int i;
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--
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-- BUG_ON(direction == DMA_NONE);
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--
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-- for (i = 0; i < nents; i++, sg++) {
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-- sg->dma_address = (dma_addr_t)page_to_phys(sg->page) + sg->offset;
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-- }
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--
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-- return nents;
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--}
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--
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--EXPORT_SYMBOL(dma_map_sg);
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--
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--dma_addr_t dma_map_page(struct device *dev, struct page *page,
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-- unsigned long offset, size_t size, enum dma_data_direction direction)
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--{
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-- BUG_ON(direction == DMA_NONE);
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--
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-- return page_to_phys(page) + offset;
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--}
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--
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--EXPORT_SYMBOL(dma_map_page);
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--
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--void dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size,
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-- enum dma_data_direction direction)
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--{
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-- BUG_ON(direction == DMA_NONE);
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--}
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--
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--EXPORT_SYMBOL(dma_unmap_page);
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--
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--void dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries,
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-- enum dma_data_direction direction)
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--{
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-- BUG_ON(direction == DMA_NONE);
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--}
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--
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--EXPORT_SYMBOL(dma_unmap_sg);
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--
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--void dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle,
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-- size_t size, enum dma_data_direction direction)
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--{
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-- BUG_ON(direction == DMA_NONE);
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--}
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--
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--EXPORT_SYMBOL(dma_sync_single_for_cpu);
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--
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--void dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle,
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-- size_t size, enum dma_data_direction direction)
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--{
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-- BUG_ON(direction == DMA_NONE);
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--}
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--
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--EXPORT_SYMBOL(dma_sync_single_for_device);
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--
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--void dma_sync_single_range_for_cpu(struct device *dev, dma_addr_t dma_handle,
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-- unsigned long offset, size_t size,
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-- enum dma_data_direction direction)
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--{
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-- BUG_ON(direction == DMA_NONE);
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--}
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--
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--EXPORT_SYMBOL(dma_sync_single_range_for_cpu);
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--
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--void dma_sync_single_range_for_device(struct device *dev, dma_addr_t dma_handle,
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-- unsigned long offset, size_t size,
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-- enum dma_data_direction direction)
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--{
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-- BUG_ON(direction == DMA_NONE);
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--}
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--
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--EXPORT_SYMBOL(dma_sync_single_range_for_device);
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--
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--void dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nelems,
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-- enum dma_data_direction direction)
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--{
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-- BUG_ON(direction == DMA_NONE);
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--}
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--
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--EXPORT_SYMBOL(dma_sync_sg_for_cpu);
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--
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--void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nelems,
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-- enum dma_data_direction direction)
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--{
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-- BUG_ON(direction == DMA_NONE);
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--}
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--
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--EXPORT_SYMBOL(dma_sync_sg_for_device);
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--
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--int dma_mapping_error(dma_addr_t dma_addr)
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--{
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-- return 0;
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--}
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--
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--EXPORT_SYMBOL(dma_mapping_error);
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--
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--int dma_supported(struct device *dev, u64 mask)
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--{
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-- /*
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-- * we fall back to GFP_DMA when the mask isn't all 1s,
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-- * so we can't guarantee allocations that must be
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-- * within a tighter range than GFP_DMA..
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-- */
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-- if (mask < 0x00ffffff)
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-- return 0;
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--
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-- return 1;
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--}
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--
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--EXPORT_SYMBOL(dma_supported);
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--
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--int dma_is_consistent(dma_addr_t dma_addr)
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--{
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-- return 1;
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--}
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--
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--EXPORT_SYMBOL(dma_is_consistent);
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--
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--void dma_cache_sync(void *vaddr, size_t size,
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-- enum dma_data_direction direction)
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--{
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-- BUG_ON(direction == DMA_NONE);
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--}
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--
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--EXPORT_SYMBOL(dma_cache_sync);
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--
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--/* The DAC routines are a PCIism.. */
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--
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--#ifdef CONFIG_PCI
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--
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--#include <linux/pci.h>
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--
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--dma64_addr_t pci_dac_page_to_dma(struct pci_dev *pdev,
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-- struct page *page, unsigned long offset, int direction)
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--{
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-- return (dma64_addr_t)page_to_phys(page) + offset;
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--}
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--
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--EXPORT_SYMBOL(pci_dac_page_to_dma);
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--
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--struct page *pci_dac_dma_to_page(struct pci_dev *pdev,
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-- dma64_addr_t dma_addr)
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--{
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-- return mem_map + (dma_addr >> PAGE_SHIFT);
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--}
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--
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--EXPORT_SYMBOL(pci_dac_dma_to_page);
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--
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--unsigned long pci_dac_dma_to_offset(struct pci_dev *pdev,
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-- dma64_addr_t dma_addr)
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--{
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-- return dma_addr & ~PAGE_MASK;
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--}
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--
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--EXPORT_SYMBOL(pci_dac_dma_to_offset);
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--
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--void pci_dac_dma_sync_single_for_cpu(struct pci_dev *pdev,
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-- dma64_addr_t dma_addr, size_t len, int direction)
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--{
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-- BUG_ON(direction == PCI_DMA_NONE);
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--}
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--
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--EXPORT_SYMBOL(pci_dac_dma_sync_single_for_cpu);
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--
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--void pci_dac_dma_sync_single_for_device(struct pci_dev *pdev,
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-- dma64_addr_t dma_addr, size_t len, int direction)
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--{
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-- BUG_ON(direction == PCI_DMA_NONE);
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--}
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--
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--EXPORT_SYMBOL(pci_dac_dma_sync_single_for_device);
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--
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--#endif /* CONFIG_PCI */
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-diff -urN linux.old/arch/mips/mm/dma-default.c linux.dev/arch/mips/mm/dma-default.c
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---- linux.old/arch/mips/mm/dma-default.c 1970-01-01 01:00:00.000000000 +0100
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-+++ linux.dev/arch/mips/mm/dma-default.c 2007-02-09 20:26:48.671885792 +0100
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-@@ -0,0 +1,363 @@
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-+/*
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-+ * This file is subject to the terms and conditions of the GNU General Public
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-+ * License. See the file "COPYING" in the main directory of this archive
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-+ * for more details.
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-+ *
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-+ * Copyright (C) 2000 Ani Joshi <[email protected]>
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-+ * Copyright (C) 2000, 2001, 06 Ralf Baechle <[email protected]>
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-+ * swiped from i386, and cloned for MIPS by Geert, polished by Ralf.
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-+ */
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-+
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-+#include <linux/types.h>
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-+#include <linux/dma-mapping.h>
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-+#include <linux/mm.h>
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-+#include <linux/module.h>
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-+#include <linux/string.h>
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-+
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-+#include <asm/cache.h>
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-+#include <asm/io.h>
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-+
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-+#include <dma-coherence.h>
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-+
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-+/*
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-+ * Warning on the terminology - Linux calls an uncached area coherent;
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-+ * MIPS terminology calls memory areas with hardware maintained coherency
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-+ * coherent.
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-+ */
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-+
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-+static inline int cpu_is_noncoherent_r10000(struct device *dev)
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-+{
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-+ return !plat_device_is_coherent(dev) &&
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-+ (current_cpu_data.cputype == CPU_R10000 &&
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-+ current_cpu_data.cputype == CPU_R12000);
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-+}
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-+
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-+void *dma_alloc_noncoherent(struct device *dev, size_t size,
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-+ dma_addr_t * dma_handle, gfp_t gfp)
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-+{
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-+ void *ret;
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-+
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-+ /* ignore region specifiers */
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-+ gfp &= ~(__GFP_DMA | __GFP_HIGHMEM);
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-+
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-+ if (dev == NULL || (dev->coherent_dma_mask < 0xffffffff))
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-+ gfp |= GFP_DMA;
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-+ ret = (void *) __get_free_pages(gfp, get_order(size));
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-+
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-+ if (ret != NULL) {
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-+ memset(ret, 0, size);
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-+ *dma_handle = plat_map_dma_mem(dev, ret, size);
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-+ }
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-+
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-+ return ret;
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-+}
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-+
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-+EXPORT_SYMBOL(dma_alloc_noncoherent);
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-+
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-+void *dma_alloc_coherent(struct device *dev, size_t size,
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-+ dma_addr_t * dma_handle, gfp_t gfp)
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-+{
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-+ void *ret;
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-+
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-+ /* ignore region specifiers */
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-+ gfp &= ~(__GFP_DMA | __GFP_HIGHMEM);
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-+
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-+ if (dev == NULL || (dev->coherent_dma_mask < 0xffffffff))
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-+ gfp |= GFP_DMA;
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-+ ret = (void *) __get_free_pages(gfp, get_order(size));
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-+
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-+ if (ret) {
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-+ memset(ret, 0, size);
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-+ *dma_handle = plat_map_dma_mem(dev, ret, size);
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-+
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-+ if (!plat_device_is_coherent(dev)) {
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-+ dma_cache_wback_inv((unsigned long) ret, size);
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-+ ret = UNCAC_ADDR(ret);
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-+ }
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-+ }
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-+
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-+ return ret;
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-+}
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-+
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|
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-+EXPORT_SYMBOL(dma_alloc_coherent);
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-+
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|
-+void dma_free_noncoherent(struct device *dev, size_t size, void *vaddr,
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-+ dma_addr_t dma_handle)
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|
-+{
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-+ free_pages((unsigned long) vaddr, get_order(size));
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|
-+}
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-+
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|
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-+EXPORT_SYMBOL(dma_free_noncoherent);
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-+
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-+void dma_free_coherent(struct device *dev, size_t size, void *vaddr,
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-+ dma_addr_t dma_handle)
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|
-+{
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-+ unsigned long addr = (unsigned long) vaddr;
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-+
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-+ if (!plat_device_is_coherent(dev))
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|
-+ addr = CAC_ADDR(addr);
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-+
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-+ free_pages(addr, get_order(size));
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|
-+}
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-+
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-+EXPORT_SYMBOL(dma_free_coherent);
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|
-+
|
|
|
-+static inline void __dma_sync(unsigned long addr, size_t size,
|
|
|
-+ enum dma_data_direction direction)
|
|
|
-+{
|
|
|
-+ switch (direction) {
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|
|
-+ 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 <[email protected]>
|
|
|
-- * Copyright (C) 2000, 2001 Ralf Baechle <[email protected]>
|
|
|
-- * 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 <[email protected]>
|
|
|
-- * Copyright (C) 2000, 2001 Ralf Baechle <[email protected]>
|
|
|
-- * Copyright (C) 2005 Ilya A. Volynets-Evenbakh <[email protected]>
|
|
|
-- * 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 <[email protected]>
|
|
|
-- * Copyright (C) 2000, 2001 Ralf Baechle <[email protected]>
|
|
|
-- * 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 <[email protected]>
|
|
|
-+ * Copyright (C) 2000, 2001, 06 Ralf Baechle <[email protected]>
|
|
|
-+ * 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 <[email protected]>
|
|
|
-+ *
|
|
|
-+ */
|
|
|
-+#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 <[email protected]>
|
|
|
-+ *
|
|
|
-+ */
|
|
|
-+#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 <[email protected]>
|
|
|
-+ *
|
|
|
-+ */
|
|
|
-+#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 <[email protected]>
|
|
|
-+ */
|
|
|
-+#ifndef __ASM_MACH_JAZZ_DMA_COHERENCE_H
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-+#define __ASM_MACH_JAZZ_DMA_COHERENCE_H
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-+
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-+#include <asm/jazzdma.h>
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-+
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-+struct device;
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-+
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-+static dma_addr_t plat_map_dma_mem(struct device *dev, void *addr, size_t size)
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-+{
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-+ return vdma_alloc(virt_to_phys(addr), size);
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-+}
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-+
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-+static dma_addr_t plat_map_dma_mem_page(struct device *dev, struct page *page)
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-+{
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-+ return vdma_alloc(page_to_phys(page), PAGE_SIZE);
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-+}
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-+
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-+static unsigned long plat_dma_addr_to_phys(dma_addr_t dma_addr)
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-+{
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-+ return vdma_log2phys(dma_addr);
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-+}
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-+
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-+static void plat_unmap_dma_mem(dma_addr_t dma_addr)
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-+{
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-+ vdma_free(dma_addr);
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-+}
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-+
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-+static inline int plat_device_is_coherent(struct device *dev)
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-+{
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-+ return 0;
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-+}
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-+
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-+#endif /* __ASM_MACH_JAZZ_DMA_COHERENCE_H */
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