diff options
Diffstat (limited to 'arch/x86/kernel/pci-gart_64.c')
| -rw-r--r-- | arch/x86/kernel/pci-gart_64.c | 41 |
1 files changed, 25 insertions, 16 deletions
diff --git a/arch/x86/kernel/pci-gart_64.c b/arch/x86/kernel/pci-gart_64.c index 5ee700f0844d..65f6acb025c8 100644 --- a/arch/x86/kernel/pci-gart_64.c +++ b/arch/x86/kernel/pci-gart_64.c @@ -25,6 +25,7 @@ #include <linux/bitops.h> #include <linux/kdebug.h> #include <linux/scatterlist.h> +#include <linux/iommu-helper.h> #include <asm/atomic.h> #include <asm/io.h> #include <asm/mtrr.h> @@ -82,17 +83,24 @@ AGPEXTERN __u32 *agp_gatt_table; static unsigned long next_bit; /* protected by iommu_bitmap_lock */ static int need_flush; /* global flush state. set for each gart wrap */ -static unsigned long alloc_iommu(int size) +static unsigned long alloc_iommu(struct device *dev, int size) { unsigned long offset, flags; + unsigned long boundary_size; + unsigned long base_index; + + base_index = ALIGN(iommu_bus_base & dma_get_seg_boundary(dev), + PAGE_SIZE) >> PAGE_SHIFT; + boundary_size = ALIGN(dma_get_seg_boundary(dev) + 1, + PAGE_SIZE) >> PAGE_SHIFT; spin_lock_irqsave(&iommu_bitmap_lock, flags); - offset = find_next_zero_string(iommu_gart_bitmap, next_bit, - iommu_pages, size); + offset = iommu_area_alloc(iommu_gart_bitmap, iommu_pages, next_bit, + size, base_index, boundary_size, 0); if (offset == -1) { need_flush = 1; - offset = find_next_zero_string(iommu_gart_bitmap, 0, - iommu_pages, size); + offset = iommu_area_alloc(iommu_gart_bitmap, iommu_pages, 0, + size, base_index, boundary_size, 0); } if (offset != -1) { set_bit_string(iommu_gart_bitmap, offset, size); @@ -114,7 +122,7 @@ static void free_iommu(unsigned long offset, int size) unsigned long flags; spin_lock_irqsave(&iommu_bitmap_lock, flags); - __clear_bit_string(iommu_gart_bitmap, offset, size); + iommu_area_free(iommu_gart_bitmap, offset, size); spin_unlock_irqrestore(&iommu_bitmap_lock, flags); } @@ -235,7 +243,7 @@ static dma_addr_t dma_map_area(struct device *dev, dma_addr_t phys_mem, size_t size, int dir) { unsigned long npages = to_pages(phys_mem, size); - unsigned long iommu_page = alloc_iommu(npages); + unsigned long iommu_page = alloc_iommu(dev, npages); int i; if (iommu_page == -1) { @@ -355,10 +363,11 @@ static int dma_map_sg_nonforce(struct device *dev, struct scatterlist *sg, } /* Map multiple scatterlist entries continuous into the first. */ -static int __dma_map_cont(struct scatterlist *start, int nelems, - struct scatterlist *sout, unsigned long pages) +static int __dma_map_cont(struct device *dev, struct scatterlist *start, + int nelems, struct scatterlist *sout, + unsigned long pages) { - unsigned long iommu_start = alloc_iommu(pages); + unsigned long iommu_start = alloc_iommu(dev, pages); unsigned long iommu_page = iommu_start; struct scatterlist *s; int i; @@ -394,8 +403,8 @@ static int __dma_map_cont(struct scatterlist *start, int nelems, } static inline int -dma_map_cont(struct scatterlist *start, int nelems, struct scatterlist *sout, - unsigned long pages, int need) +dma_map_cont(struct device *dev, struct scatterlist *start, int nelems, + struct scatterlist *sout, unsigned long pages, int need) { if (!need) { BUG_ON(nelems != 1); @@ -403,7 +412,7 @@ dma_map_cont(struct scatterlist *start, int nelems, struct scatterlist *sout, sout->dma_length = start->length; return 0; } - return __dma_map_cont(start, nelems, sout, pages); + return __dma_map_cont(dev, start, nelems, sout, pages); } /* @@ -449,8 +458,8 @@ gart_map_sg(struct device *dev, struct scatterlist *sg, int nents, int dir) if (!iommu_merge || !nextneed || !need || s->offset || (s->length + seg_size > max_seg_size) || (ps->offset + ps->length) % PAGE_SIZE) { - if (dma_map_cont(start_sg, i - start, sgmap, - pages, need) < 0) + if (dma_map_cont(dev, start_sg, i - start, + sgmap, pages, need) < 0) goto error; out++; seg_size = 0; @@ -466,7 +475,7 @@ gart_map_sg(struct device *dev, struct scatterlist *sg, int nents, int dir) pages += to_pages(s->offset, s->length); ps = s; } - if (dma_map_cont(start_sg, i - start, sgmap, pages, need) < 0) + if (dma_map_cont(dev, start_sg, i - start, sgmap, pages, need) < 0) goto error; out++; flush_gart(); |
