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| author | Ian Campbell <ian.campbell@citrix.com> | 2008-12-16 12:17:34 -0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-12-17 18:58:17 +0100 |
| commit | 2e5b2b86b65fe36bb8401e5608eb0b7603aa1cab (patch) | |
| tree | a407d13491a0758607347bd7fa6dd5a31d64ad41 /lib/swiotlb.c | |
| parent | ef9b189352f2eb78f14e52996f4780a523b04a49 (diff) | |
| download | lwn-2e5b2b86b65fe36bb8401e5608eb0b7603aa1cab.tar.gz lwn-2e5b2b86b65fe36bb8401e5608eb0b7603aa1cab.zip | |
swiotlb: consolidate swiotlb info message printing
Impact: clean up swiotlb printks
Remove duplicated swiotlb info printing, and make it more detailed.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'lib/swiotlb.c')
| -rw-r--r-- | lib/swiotlb.c | 33 |
1 files changed, 28 insertions, 5 deletions
diff --git a/lib/swiotlb.c b/lib/swiotlb.c index 1661af593914..fa2dc4e5f9ba 100644 --- a/lib/swiotlb.c +++ b/lib/swiotlb.c @@ -156,6 +156,32 @@ static dma_addr_t swiotlb_sg_to_bus(struct scatterlist *sg) return swiotlb_phys_to_bus(page_to_phys(sg_page(sg)) + sg->offset); } +static void swiotlb_print_info(unsigned long bytes) +{ + phys_addr_t pstart, pend; + dma_addr_t bstart, bend; + + pstart = virt_to_phys(io_tlb_start); + pend = virt_to_phys(io_tlb_end); + + bstart = swiotlb_phys_to_bus(pstart); + bend = swiotlb_phys_to_bus(pend); + + printk(KERN_INFO "Placing %luMB software IO TLB between %p - %p\n", + bytes >> 20, io_tlb_start, io_tlb_end); + if (pstart != bstart || pend != bend) + printk(KERN_INFO "software IO TLB at phys %#llx - %#llx" + " bus %#llx - %#llx\n", + (unsigned long long)pstart, + (unsigned long long)pend, + (unsigned long long)bstart, + (unsigned long long)bend); + else + printk(KERN_INFO "software IO TLB at phys %#llx - %#llx\n", + (unsigned long long)pstart, + (unsigned long long)pend); +} + /* * Statically reserve bounce buffer space and initialize bounce buffer data * structures for the software IO TLB used to implement the DMA API. @@ -198,8 +224,7 @@ swiotlb_init_with_default_size(size_t default_size) if (!io_tlb_overflow_buffer) panic("Cannot allocate SWIOTLB overflow buffer!\n"); - printk(KERN_INFO "Placing software IO TLB between 0x%lx - 0x%lx\n", - swiotlb_virt_to_bus(io_tlb_start), swiotlb_virt_to_bus(io_tlb_end)); + swiotlb_print_info(bytes); } void __init @@ -279,9 +304,7 @@ swiotlb_late_init_with_default_size(size_t default_size) if (!io_tlb_overflow_buffer) goto cleanup4; - printk(KERN_INFO "Placing %luMB software IO TLB between 0x%lx - " - "0x%lx\n", bytes >> 20, - swiotlb_virt_to_bus(io_tlb_start), swiotlb_virt_to_bus(io_tlb_end)); + swiotlb_print_info(bytes); return 0; |