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author | David S. Miller <davem@davemloft.net> | 2008-08-27 08:14:05 +0400 |
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committer | David S. Miller <davem@davemloft.net> | 2008-08-29 13:15:23 +0400 |
commit | 0ad626a2a4c3d8e565b3a6f10eeda5b43560fbdb (patch) | |
tree | e96ca6a281db172caa5317280035c855e49b2845 /arch/sparc/mm/io-unit.c | |
parent | 47a2d7288538e7f334a0be318317b138f0e3dfbe (diff) | |
download | linux-0ad626a2a4c3d8e565b3a6f10eeda5b43560fbdb.tar.xz |
sparc32: Kill iounit_map_dma_*().
Unused.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc/mm/io-unit.c')
-rw-r--r-- | arch/sparc/mm/io-unit.c | 48 |
1 files changed, 0 insertions, 48 deletions
diff --git a/arch/sparc/mm/io-unit.c b/arch/sparc/mm/io-unit.c index caf551ad9d8c..53900230c2d2 100644 --- a/arch/sparc/mm/io-unit.c +++ b/arch/sparc/mm/io-unit.c @@ -267,51 +267,3 @@ void __init ld_mmu_iounit(void) BTFIXUPSET_CALL(mmu_unmap_dma_area, iounit_unmap_dma_area, BTFIXUPCALL_NORM); #endif } - -__u32 iounit_map_dma_init(struct sbus_bus *sbus, int size) -{ - int i, j, k, npages; - unsigned long rotor, scan, limit; - unsigned long flags; - __u32 ret; - struct iounit_struct *iounit = sbus->ofdev.dev.archdata.iommu; - - npages = (size + (PAGE_SIZE-1)) >> PAGE_SHIFT; - i = 0x0213; - spin_lock_irqsave(&iounit->lock, flags); -next: j = (i & 15); - rotor = iounit->rotor[j - 1]; - limit = iounit->limit[j]; - scan = rotor; -nexti: scan = find_next_zero_bit(iounit->bmap, limit, scan); - if (scan + npages > limit) { - if (limit != rotor) { - limit = rotor; - scan = iounit->limit[j - 1]; - goto nexti; - } - i >>= 4; - if (!(i & 15)) - panic("iounit_map_dma_init: Couldn't find free iopte slots for %d bytes\n", size); - goto next; - } - for (k = 1, scan++; k < npages; k++) - if (test_bit(scan++, iounit->bmap)) - goto nexti; - iounit->rotor[j - 1] = (scan < limit) ? scan : iounit->limit[j - 1]; - scan -= npages; - ret = IOUNIT_DMA_BASE + (scan << PAGE_SHIFT); - for (k = 0; k < npages; k++, scan++) - set_bit(scan, iounit->bmap); - spin_unlock_irqrestore(&iounit->lock, flags); - return ret; -} - -__u32 iounit_map_dma_page(__u32 vaddr, void *addr, struct sbus_bus *sbus) -{ - int scan = (vaddr - IOUNIT_DMA_BASE) >> PAGE_SHIFT; - struct iounit_struct *iounit = sbus->ofdev.dev.archdata.iommu; - - iounit->page_table[scan] = MKIOPTE(__pa(((unsigned long)addr) & PAGE_MASK)); - return vaddr + (((unsigned long)addr) & ~PAGE_MASK); -} |