some ar531x cleanup
authorFelix Fietkau <nbd@openwrt.org>
Thu, 15 Feb 2007 21:52:13 +0000 (21:52 +0000)
committerFelix Fietkau <nbd@openwrt.org>
Thu, 15 Feb 2007 21:52:13 +0000 (21:52 +0000)
SVN-Revision: 6302

target/linux/atheros-2.6/files/arch/mips/atheros/ar5312.c
target/linux/atheros-2.6/files/arch/mips/atheros/ar5312.h
target/linux/atheros-2.6/files/arch/mips/atheros/ar5315.c
target/linux/atheros-2.6/files/arch/mips/atheros/ar5315.h
target/linux/atheros-2.6/files/include/asm-mips/mach-atheros/dma-coherence.h [new file with mode: 0644]
target/linux/atheros-2.6/patches/150-mips_cache_cleanup.patch [new file with mode: 0644]

index 28b9d3f9581cafd82dd804975c23272d08610b43..4e1beaae3825ce32811945fe8617d48a5191403b 100644 (file)
 #include "ar531x.h"
 
 
-#define AR531X_IRQ_WLAN0_INTRS  MIPS_CPU_IRQ_BASE+2 /* C0_CAUSE: 0x0400 */
-#define AR531X_IRQ_ENET0_INTRS  MIPS_CPU_IRQ_BASE+3 /* C0_CAUSE: 0x0800 */
-#define AR531X_IRQ_ENET1_INTRS  MIPS_CPU_IRQ_BASE+4 /* C0_CAUSE: 0x1000 */
-#define AR531X_IRQ_WLAN1_INTRS  MIPS_CPU_IRQ_BASE+5 /* C0_CAUSE: 0x2000 */
-#define AR531X_IRQ_MISC_INTRS   MIPS_CPU_IRQ_BASE+6 /* C0_CAUSE: 0x4000 */
-
 
 static struct platform_device *ar5312_devs[5];
 
@@ -49,8 +43,8 @@ static struct resource ar5312_eth0_res[] = {
        {
                .name = "eth_irq",
                .flags = IORESOURCE_IRQ,
-               .start = AR531X_IRQ_ENET0_INTRS,
-               .end = AR531X_IRQ_ENET0_INTRS,
+               .start = AR5312_IRQ_ENET0_INTRS,
+               .end = AR5312_IRQ_ENET0_INTRS,
        },
 };
 
@@ -65,8 +59,8 @@ static struct resource ar5312_eth1_res[] = {
        {
                .name = "eth_irq",
                .flags = IORESOURCE_IRQ,
-               .start = AR531X_IRQ_ENET1_INTRS,
-               .end = AR531X_IRQ_ENET1_INTRS,
+               .start = AR5312_IRQ_ENET1_INTRS,
+               .end = AR5312_IRQ_ENET1_INTRS,
        },
 };
 
@@ -221,13 +215,13 @@ asmlinkage void ar5312_irq_dispatch(void)
        int pending = read_c0_status() & read_c0_cause();
 
        if (pending & CAUSEF_IP2)
-               do_IRQ(AR531X_IRQ_WLAN0_INTRS);
+               do_IRQ(AR5312_IRQ_WLAN0_INTRS);
        else if (pending & CAUSEF_IP3)
-               do_IRQ(AR531X_IRQ_ENET0_INTRS);
+               do_IRQ(AR5312_IRQ_ENET0_INTRS);
        else if (pending & CAUSEF_IP4)
-               do_IRQ(AR531X_IRQ_ENET1_INTRS);
+               do_IRQ(AR5312_IRQ_ENET1_INTRS);
        else if (pending & CAUSEF_IP5)
-               do_IRQ(AR531X_IRQ_WLAN1_INTRS);
+               do_IRQ(AR5312_IRQ_WLAN1_INTRS);
        else if (pending & CAUSEF_IP6) {
                unsigned int ar531x_misc_intrs = sysRegRead(AR531X_ISR) & sysRegRead(AR531X_IMR);
 
@@ -448,7 +442,7 @@ void __init ar5312_misc_intr_init(int irq_base)
                irq_desc[i].chip = &ar5312_misc_intr_controller;
        }
        setup_irq(AR531X_MISC_IRQ_AHB_PROC, &ar5312_ahb_proc_interrupt);
-       setup_irq(AR531X_IRQ_MISC_INTRS, &cascade);
+       setup_irq(AR5312_IRQ_MISC_INTRS, &cascade);
 }
 
 
index b6e71b8901498d88594e3841f0102467985e192b..62d57979338692779194d8af1511d12a48dc175b 100644 (file)
 
 #include <asm/addrspace.h>
 
+/*
+ * IRQs
+ */
+
+#define AR5312_IRQ_WLAN0_INTRS  MIPS_CPU_IRQ_BASE+2 /* C0_CAUSE: 0x0400 */
+#define AR5312_IRQ_ENET0_INTRS  MIPS_CPU_IRQ_BASE+3 /* C0_CAUSE: 0x0800 */
+#define AR5312_IRQ_ENET1_INTRS  MIPS_CPU_IRQ_BASE+4 /* C0_CAUSE: 0x1000 */
+#define AR5312_IRQ_WLAN1_INTRS  MIPS_CPU_IRQ_BASE+5 /* C0_CAUSE: 0x2000 */
+#define AR5312_IRQ_MISC_INTRS   MIPS_CPU_IRQ_BASE+6 /* C0_CAUSE: 0x4000 */
+
+
 /* Address Map */
 #define AR531X_WLAN0            0x18000000
 #define AR531X_WLAN1            0x18500000
index 78b2835914c35212eb2d1dff8d7caef39e9112fc..b0db7c1d024f724bfd5a10ffea0c1f6a097c42b6 100644 (file)
 #include <asm/io.h>
 #include "ar531x.h"
 
-#define AR531X_IRQ_MISC_INTRS   MIPS_CPU_IRQ_BASE+2 /* C0_CAUSE: 0x0400 */
-#define AR531X_IRQ_WLAN0_INTRS  MIPS_CPU_IRQ_BASE+3 /* C0_CAUSE: 0x0800 */
-#define AR531X_IRQ_ENET0_INTRS  MIPS_CPU_IRQ_BASE+4 /* C0_CAUSE: 0x1000 */
-#define AR531X_IRQ_LCBUS_PCI    MIPS_CPU_IRQ_BASE+5 /* C0_CAUSE: 0x2000 */
-#define AR531X_IRQ_WLAN0_POLL   MIPS_CPU_IRQ_BASE+6 /* C0_CAUSE: 0x4000 */
-
 static struct resource ar5315_eth_res[] = {
        {
                .name = "eth_membase",
@@ -44,8 +38,8 @@ static struct resource ar5315_eth_res[] = {
        {
                .name = "eth_irq",
                .flags = IORESOURCE_IRQ,
-               .start = AR531X_IRQ_ENET0_INTRS,
-               .end = AR531X_IRQ_ENET0_INTRS,
+               .start = AR5315_IRQ_ENET0_INTRS,
+               .end = AR5315_IRQ_ENET0_INTRS,
        },
 };
 
@@ -218,9 +212,9 @@ asmlinkage void ar5315_irq_dispatch(void)
        int pending = read_c0_status() & read_c0_cause();
 
        if (pending & CAUSEF_IP3)
-               do_IRQ(AR531X_IRQ_WLAN0_INTRS);
+               do_IRQ(AR5315_IRQ_WLAN0_INTRS);
        else if (pending & CAUSEF_IP4)
-               do_IRQ(AR531X_IRQ_ENET0_INTRS);
+               do_IRQ(AR5315_IRQ_ENET0_INTRS);
        else if (pending & CAUSEF_IP2) {
                unsigned int ar531x_misc_intrs = sysRegRead(AR5315_ISR) & sysRegRead(AR5315_IMR);
 
@@ -504,7 +498,7 @@ void ar5315_misc_intr_init(int irq_base)
                irq_desc[i].chip = &ar5315_misc_intr_controller;
        }
        setup_irq(AR531X_MISC_IRQ_AHB_PROC, &ar5315_ahb_proc_interrupt);
-       setup_irq(AR531X_IRQ_MISC_INTRS, &cascade);
+       setup_irq(AR5315_IRQ_MISC_INTRS, &cascade);
 }
 
 void __init ar5315_plat_setup(void)
index b523f80405fa1104eb4a2ad074276c8318e8d5d6..ef2df8778db4cd8557514d5bd96e2e49fb330228 100644 (file)
 #ifndef AR5315_H
 #define AR5315_H
 
+/* 
+ * IRQs
+ */
+#define AR5315_IRQ_MISC_INTRS   MIPS_CPU_IRQ_BASE+2 /* C0_CAUSE: 0x0400 */
+#define AR5315_IRQ_WLAN0_INTRS  MIPS_CPU_IRQ_BASE+3 /* C0_CAUSE: 0x0800 */
+#define AR5315_IRQ_ENET0_INTRS  MIPS_CPU_IRQ_BASE+4 /* C0_CAUSE: 0x1000 */
+#define AR5315_IRQ_LCBUS_PCI    MIPS_CPU_IRQ_BASE+5 /* C0_CAUSE: 0x2000 */
+#define AR5315_IRQ_WLAN0_POLL   MIPS_CPU_IRQ_BASE+6 /* C0_CAUSE: 0x4000 */
+
+
 /*
  * Address map
  */
  */
 #define AR5315_ENDIAN_CTL       (AR5315_DSLBASE + 0x000c)
 
-#define CONFIG_AHB                  0x00000001      /* EC - AHB bridge endianess */
-#define CONFIG_WLAN                 0x00000002      /* WLAN byteswap */
-#define CONFIG_MPEGTS_RSVD          0x00000004      /* MPEG-TS byteswap */
-#define CONFIG_PCI                  0x00000008      /* PCI byteswap */
-#define CONFIG_MEMCTL               0x00000010      /* Memory controller endianess */
-#define CONFIG_LOCAL                0x00000020      /* Local bus byteswap */
-#define CONFIG_ETHERNET             0x00000040      /* Ethernet byteswap */
-
-#define CONFIG_MERGE                0x00000200      /* CPU write buffer merge */
-#define CONFIG_CPU                  0x00000400      /* CPU big endian */
-#define CONFIG_PCIAHB               0x00000800
-#define CONFIG_PCIAHB_BRIDGE        0x00001000
-#define CONFIG_SPI                  0x00008000      /* SPI byteswap */
-#define CONFIG_CPU_DRAM             0x00010000
-#define CONFIG_CPU_PCI              0x00020000
-#define CONFIG_CPU_MMR              0x00040000
-#define CONFIG_BIG                  0x00000400      
+#define AR5315_CONFIG_AHB                  0x00000001      /* EC - AHB bridge endianess */
+#define AR5315_CONFIG_WLAN                 0x00000002      /* WLAN byteswap */
+#define AR5315_CONFIG_MPEGTS_RSVD          0x00000004      /* MPEG-TS byteswap */
+#define AR5315_CONFIG_PCI                  0x00000008      /* PCI byteswap */
+#define AR5315_CONFIG_MEMCTL               0x00000010      /* Memory controller endianess */
+#define AR5315_CONFIG_LOCAL                0x00000020      /* Local bus byteswap */
+#define AR5315_CONFIG_ETHERNET             0x00000040      /* Ethernet byteswap */
+
+#define AR5315_CONFIG_MERGE                0x00000200      /* CPU write buffer merge */
+#define AR5315_CONFIG_CPU                  0x00000400      /* CPU big endian */
+#define AR5315_CONFIG_PCIAHB               0x00000800
+#define AR5315_CONFIG_PCIAHB_BRIDGE        0x00001000
+#define AR5315_CONFIG_SPI                  0x00008000      /* SPI byteswap */
+#define AR5315_CONFIG_CPU_DRAM             0x00010000
+#define AR5315_CONFIG_CPU_PCI              0x00020000
+#define AR5315_CONFIG_CPU_MMR              0x00040000
+#define AR5315_CONFIG_BIG                  0x00000400      
 
 
 /*
diff --git a/target/linux/atheros-2.6/files/include/asm-mips/mach-atheros/dma-coherence.h b/target/linux/atheros-2.6/files/include/asm-mips/mach-atheros/dma-coherence.h
new file mode 100644 (file)
index 0000000..fe53556
--- /dev/null
@@ -0,0 +1,41 @@
+/*
+ * 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>
+ * Copyright (C) 2007  Felix Fietkau <nbd@openwrt.org>
+ *
+ */
+#ifndef __ASM_MACH_GENERIC_DMA_COHERENCE_H
+#define __ASM_MACH_GENERIC_DMA_COHERENCE_H
+
+#define PCI_DMA_OFFSET 0x20000000
+
+struct device;
+
+static dma_addr_t plat_map_dma_mem(struct device *dev, void *addr, size_t size)
+{
+       return virt_to_phys(addr) + (dev != NULL ? PCI_DMA_OFFSET : 0);
+}
+
+static dma_addr_t plat_map_dma_mem_page(struct device *dev, struct page *page)
+{
+       return page_to_phys(page) + (dev != NULL ? PCI_DMA_OFFSET : 0);
+}
+
+static unsigned long plat_dma_addr_to_phys(dma_addr_t dma_addr)
+{
+       return (dma_addr > PCI_DMA_OFFSET ? dma_addr - PCI_DMA_OFFSET : dma_addr);
+}
+
+static void plat_unmap_dma_mem(dma_addr_t dma_addr)
+{
+}
+
+static inline int plat_device_is_coherent(struct device *dev)
+{
+       return 0;
+}
+
+#endif /* __ASM_MACH_GENERIC_DMA_COHERENCE_H */
diff --git a/target/linux/atheros-2.6/patches/150-mips_cache_cleanup.patch b/target/linux/atheros-2.6/patches/150-mips_cache_cleanup.patch
new file mode 100644 (file)
index 0000000..e39cb82
--- /dev/null
@@ -0,0 +1,2028 @@
+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 */