patch-2.4.22 linux-2.4.22/arch/mips/hp-lj/pci-dma.c

• Lines: 53
• Date: 1969-12-31 16:00:00.000000000 -0800
• Orig file: linux-2.4.21/arch/mips/hp-lj/pci-dma.c
• Orig date: 2002-08-02 17:39:43.000000000 -0700

diff -urN linux-2.4.21/arch/mips/hp-lj/pci-dma.c linux-2.4.22/arch/mips/hp-lj/pci-dma.c
@@ -1,52 +0,0 @@
-/*
- * Copyright (C) 2000   Ani Joshi <ajoshi@unixbox.com>
- *
- *
- * Dynamic DMA mapping support.
- *
- * swiped from i386, and cloned for MIPS by Geert.
- *
- */
-
-#include <linux/types.h>
-#include <linux/mm.h>
-#include <linux/string.h>
-#include <linux/pci.h>
-#include <asm/io.h>
-
-void *pci_alloc_consistent(struct pci_dev *hwdev, size_t size,
-			   dma_addr_t *dma_handle)
-{
-	void *ret;
-	int gfp = GFP_ATOMIC;
-
-	if (hwdev == NULL || hwdev->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_bus(ret);
-
-
-                // REVISIT  this needs reviewal as mentioned in bug report
-                // currently we bump kseg0 allocates to kseg1 uncacheable space
-
-                if ((((unsigned int) ret) & 0xe0000000) == 0x80000000) {
-	           //flush the cache to eliminate coherency problems
-	           // and assure dirty lines won't later get written over any dma, etc.
-                   flush_cache_all();
-		   ret = (void*)((unsigned int)ret | 0x20000000); 
-                }
-
-                
-	}
-	return ret;
-}
-
-
-void pci_free_consistent(struct pci_dev *hwdev, size_t size,
-			 void *vaddr, dma_addr_t dma_handle)
-{
-	free_pages((unsigned long)vaddr, get_order(size));
-}
-