diff options
author | Len Brown <len.brown@intel.com> | 2006-01-07 03:50:18 -0500 |
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committer | Len Brown <len.brown@intel.com> | 2006-01-07 03:50:18 -0500 |
commit | ed03f430cdc8c802652467e9097606fedc2c7abc (patch) | |
tree | 30941ec1e6f93e99358fefe18175e5dd800a4379 /drivers/ieee1394/dma.c | |
parent | ed349a8a0a780ed27e2a765f16cee54d9b63bfee (diff) | |
parent | 6f957eaf79356a32e838f5f262ee9a60544b1d5b (diff) | |
download | op-kernel-dev-ed03f430cdc8c802652467e9097606fedc2c7abc.zip op-kernel-dev-ed03f430cdc8c802652467e9097606fedc2c7abc.tar.gz |
Pull pnpacpi into acpica branch
Diffstat (limited to 'drivers/ieee1394/dma.c')
-rw-r--r-- | drivers/ieee1394/dma.c | 73 |
1 files changed, 45 insertions, 28 deletions
diff --git a/drivers/ieee1394/dma.c b/drivers/ieee1394/dma.c index b79ddb4..9fb2769 100644 --- a/drivers/ieee1394/dma.c +++ b/drivers/ieee1394/dma.c @@ -23,7 +23,8 @@ void dma_prog_region_init(struct dma_prog_region *prog) prog->bus_addr = 0; } -int dma_prog_region_alloc(struct dma_prog_region *prog, unsigned long n_bytes, struct pci_dev *dev) +int dma_prog_region_alloc(struct dma_prog_region *prog, unsigned long n_bytes, + struct pci_dev *dev) { /* round up to page size */ n_bytes = PAGE_ALIGN(n_bytes); @@ -32,7 +33,8 @@ int dma_prog_region_alloc(struct dma_prog_region *prog, unsigned long n_bytes, prog->kvirt = pci_alloc_consistent(dev, n_bytes, &prog->bus_addr); if (!prog->kvirt) { - printk(KERN_ERR "dma_prog_region_alloc: pci_alloc_consistent() failed\n"); + printk(KERN_ERR + "dma_prog_region_alloc: pci_alloc_consistent() failed\n"); dma_prog_region_free(prog); return -ENOMEM; } @@ -45,7 +47,8 @@ int dma_prog_region_alloc(struct dma_prog_region *prog, unsigned long n_bytes, void dma_prog_region_free(struct dma_prog_region *prog) { if (prog->kvirt) { - pci_free_consistent(prog->dev, prog->n_pages << PAGE_SHIFT, prog->kvirt, prog->bus_addr); + pci_free_consistent(prog->dev, prog->n_pages << PAGE_SHIFT, + prog->kvirt, prog->bus_addr); } prog->kvirt = NULL; @@ -65,7 +68,8 @@ void dma_region_init(struct dma_region *dma) dma->sglist = NULL; } -int dma_region_alloc(struct dma_region *dma, unsigned long n_bytes, struct pci_dev *dev, int direction) +int dma_region_alloc(struct dma_region *dma, unsigned long n_bytes, + struct pci_dev *dev, int direction) { unsigned int i; @@ -95,14 +99,16 @@ int dma_region_alloc(struct dma_region *dma, unsigned long n_bytes, struct pci_d /* fill scatter/gather list with pages */ for (i = 0; i < dma->n_pages; i++) { - unsigned long va = (unsigned long) dma->kvirt + (i << PAGE_SHIFT); + unsigned long va = + (unsigned long)dma->kvirt + (i << PAGE_SHIFT); dma->sglist[i].page = vmalloc_to_page((void *)va); dma->sglist[i].length = PAGE_SIZE; } /* map sglist to the IOMMU */ - dma->n_dma_pages = pci_map_sg(dev, dma->sglist, dma->n_pages, direction); + dma->n_dma_pages = + pci_map_sg(dev, dma->sglist, dma->n_pages, direction); if (dma->n_dma_pages == 0) { printk(KERN_ERR "dma_region_alloc: pci_map_sg() failed\n"); @@ -114,7 +120,7 @@ int dma_region_alloc(struct dma_region *dma, unsigned long n_bytes, struct pci_d return 0; -err: + err: dma_region_free(dma); return -ENOMEM; } @@ -122,7 +128,8 @@ err: void dma_region_free(struct dma_region *dma) { if (dma->n_dma_pages) { - pci_unmap_sg(dma->dev, dma->sglist, dma->n_pages, dma->direction); + pci_unmap_sg(dma->dev, dma->sglist, dma->n_pages, + dma->direction); dma->n_dma_pages = 0; dma->dev = NULL; } @@ -137,7 +144,8 @@ void dma_region_free(struct dma_region *dma) /* find the scatterlist index and remaining offset corresponding to a given offset from the beginning of the buffer */ -static inline int dma_region_find(struct dma_region *dma, unsigned long offset, unsigned long *rem) +static inline int dma_region_find(struct dma_region *dma, unsigned long offset, + unsigned long *rem) { int i; unsigned long off = offset; @@ -156,15 +164,18 @@ static inline int dma_region_find(struct dma_region *dma, unsigned long offset, return i; } -dma_addr_t dma_region_offset_to_bus(struct dma_region *dma, unsigned long offset) +dma_addr_t dma_region_offset_to_bus(struct dma_region * dma, + unsigned long offset) { unsigned long rem = 0; - struct scatterlist *sg = &dma->sglist[dma_region_find(dma, offset, &rem)]; + struct scatterlist *sg = + &dma->sglist[dma_region_find(dma, offset, &rem)]; return sg_dma_address(sg) + rem; } -void dma_region_sync_for_cpu(struct dma_region *dma, unsigned long offset, unsigned long len) +void dma_region_sync_for_cpu(struct dma_region *dma, unsigned long offset, + unsigned long len) { int first, last; unsigned long rem; @@ -175,10 +186,12 @@ void dma_region_sync_for_cpu(struct dma_region *dma, unsigned long offset, unsig first = dma_region_find(dma, offset, &rem); last = dma_region_find(dma, offset + len - 1, &rem); - pci_dma_sync_sg_for_cpu(dma->dev, &dma->sglist[first], last - first + 1, dma->direction); + pci_dma_sync_sg_for_cpu(dma->dev, &dma->sglist[first], last - first + 1, + dma->direction); } -void dma_region_sync_for_device(struct dma_region *dma, unsigned long offset, unsigned long len) +void dma_region_sync_for_device(struct dma_region *dma, unsigned long offset, + unsigned long len) { int first, last; unsigned long rem; @@ -189,44 +202,47 @@ void dma_region_sync_for_device(struct dma_region *dma, unsigned long offset, un first = dma_region_find(dma, offset, &rem); last = dma_region_find(dma, offset + len - 1, &rem); - pci_dma_sync_sg_for_device(dma->dev, &dma->sglist[first], last - first + 1, dma->direction); + pci_dma_sync_sg_for_device(dma->dev, &dma->sglist[first], + last - first + 1, dma->direction); } #ifdef CONFIG_MMU /* nopage() handler for mmap access */ -static struct page* -dma_region_pagefault(struct vm_area_struct *area, unsigned long address, int *type) +static struct page *dma_region_pagefault(struct vm_area_struct *area, + unsigned long address, int *type) { unsigned long offset; unsigned long kernel_virt_addr; struct page *ret = NOPAGE_SIGBUS; - struct dma_region *dma = (struct dma_region*) area->vm_private_data; + struct dma_region *dma = (struct dma_region *)area->vm_private_data; if (!dma->kvirt) goto out; - if ( (address < (unsigned long) area->vm_start) || - (address > (unsigned long) area->vm_start + (dma->n_pages << PAGE_SHIFT)) ) + if ((address < (unsigned long)area->vm_start) || + (address > + (unsigned long)area->vm_start + (dma->n_pages << PAGE_SHIFT))) goto out; if (type) *type = VM_FAULT_MINOR; offset = address - area->vm_start; - kernel_virt_addr = (unsigned long) dma->kvirt + offset; - ret = vmalloc_to_page((void*) kernel_virt_addr); + kernel_virt_addr = (unsigned long)dma->kvirt + offset; + ret = vmalloc_to_page((void *)kernel_virt_addr); get_page(ret); -out: + out: return ret; } static struct vm_operations_struct dma_region_vm_ops = { - .nopage = dma_region_pagefault, + .nopage = dma_region_pagefault, }; -int dma_region_mmap(struct dma_region *dma, struct file *file, struct vm_area_struct *vma) +int dma_region_mmap(struct dma_region *dma, struct file *file, + struct vm_area_struct *vma) { unsigned long size; @@ -250,11 +266,12 @@ int dma_region_mmap(struct dma_region *dma, struct file *file, struct vm_area_st return 0; } -#else /* CONFIG_MMU */ +#else /* CONFIG_MMU */ -int dma_region_mmap(struct dma_region *dma, struct file *file, struct vm_area_struct *vma) +int dma_region_mmap(struct dma_region *dma, struct file *file, + struct vm_area_struct *vma) { return -EINVAL; } -#endif /* CONFIG_MMU */ +#endif /* CONFIG_MMU */ |