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swiotlb: Expose swiotlb_nr_tlb function to modules

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As a mechanism to detect whether SWIOTLB is enabled or not.
We also fix the spelling - it was swioltb instead of
swiotlb.

CC: FUJITA Tomonori <[email protected]>
[v1: Ripped out swiotlb_enabled]
Signed-off-by: Konrad Rzeszutek Wilk <[email protected]>
This commit is contained in:
Konrad Rzeszutek Wilk 2011-08-11 16:50:56 -04:00 • committed by Dave Airlie
commit f21ffe9f6d
3 changed files with 5 additions and 4 deletions
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5
lib/swiotlb.c
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@ -110,11 +110,11 @@ setup_io_tlb_npages(char *str)
__setup("swiotlb=", setup_io_tlb_npages);
/* make io_tlb_overflow tunable too? */
unsigned long swioltb_nr_tbl(void)
unsigned long swiotlb_nr_tbl(void)
{
return io_tlb_nslabs;
}
EXPORT_SYMBOL_GPL(swiotlb_nr_tbl);
/* Note that this doesn't work with highmem page */
static dma_addr_t swiotlb_virt_to_bus(struct device *hwdev,
volatile void *address)
@ -321,6 +321,7 @@ void __init swiotlb_free(void)
free_bootmem_late(__pa(io_tlb_start),
PAGE_ALIGN(io_tlb_nslabs << IO_TLB_SHIFT));
}
io_tlb_nslabs = 0;
}
static int is_swiotlb_buffer(phys_addr_t paddr)