diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/swiotlb.c | 24 |
1 files changed, 13 insertions, 11 deletions
diff --git a/lib/swiotlb.c b/lib/swiotlb.c index f114bf6a8e13..c0cbfa1116c0 100644 --- a/lib/swiotlb.c +++ b/lib/swiotlb.c @@ -57,7 +57,8 @@ int swiotlb_force; * swiotlb_tbl_sync_single_*, to see if the memory was in fact allocated by this * API. */ -static char *io_tlb_start, *io_tlb_end; +static char *io_tlb_start; +static phys_addr_t io_tlb_end; /* * The number of IO TLB blocks (in groups of 64) between io_tlb_start and @@ -125,14 +126,16 @@ static dma_addr_t swiotlb_virt_to_bus(struct device *hwdev, void swiotlb_print_info(void) { unsigned long bytes = io_tlb_nslabs << IO_TLB_SHIFT; - phys_addr_t pstart, pend; + phys_addr_t pstart; + unsigned char *vend; pstart = virt_to_phys(io_tlb_start); - pend = virt_to_phys(io_tlb_end); + vend = phys_to_virt(io_tlb_end); printk(KERN_INFO "software IO TLB [mem %#010llx-%#010llx] (%luMB) mapped at [%p-%p]\n", - (unsigned long long)pstart, (unsigned long long)pend - 1, - bytes >> 20, io_tlb_start, io_tlb_end - 1); + (unsigned long long)pstart, + (unsigned long long)io_tlb_end, + bytes >> 20, io_tlb_start, vend - 1); } void __init swiotlb_init_with_tbl(char *tlb, unsigned long nslabs, int verbose) @@ -143,7 +146,7 @@ void __init swiotlb_init_with_tbl(char *tlb, unsigned long nslabs, int verbose) io_tlb_nslabs = nslabs; io_tlb_start = tlb; - io_tlb_end = io_tlb_start + bytes; + io_tlb_end = __pa(io_tlb_start) + bytes; /* * Allocate and initialize the free list array. This array is used @@ -254,7 +257,7 @@ swiotlb_late_init_with_tbl(char *tlb, unsigned long nslabs) io_tlb_nslabs = nslabs; io_tlb_start = tlb; - io_tlb_end = io_tlb_start + bytes; + io_tlb_end = virt_to_phys(io_tlb_start) + bytes; memset(io_tlb_start, 0, bytes); @@ -304,7 +307,7 @@ cleanup3: sizeof(int))); io_tlb_list = NULL; cleanup2: - io_tlb_end = NULL; + io_tlb_end = 0; io_tlb_start = NULL; io_tlb_nslabs = 0; return -ENOMEM; @@ -339,8 +342,7 @@ void __init swiotlb_free(void) static int is_swiotlb_buffer(phys_addr_t paddr) { - return paddr >= virt_to_phys(io_tlb_start) && - paddr < virt_to_phys(io_tlb_end); + return paddr >= virt_to_phys(io_tlb_start) && paddr < io_tlb_end; } /* @@ -938,6 +940,6 @@ EXPORT_SYMBOL(swiotlb_dma_mapping_error); int swiotlb_dma_supported(struct device *hwdev, u64 mask) { - return swiotlb_virt_to_bus(hwdev, io_tlb_end - 1) <= mask; + return phys_to_dma(hwdev, io_tlb_end - 1) <= mask; } EXPORT_SYMBOL(swiotlb_dma_supported); |