diff options
Diffstat (limited to 'drivers/parisc/ccio-dma.c')
| -rw-r--r-- | drivers/parisc/ccio-dma.c | 23 |
1 files changed, 16 insertions, 7 deletions
diff --git a/drivers/parisc/ccio-dma.c b/drivers/parisc/ccio-dma.c index 1695facfca3a..60d338cd8009 100644 --- a/drivers/parisc/ccio-dma.c +++ b/drivers/parisc/ccio-dma.c @@ -43,6 +43,7 @@ #include <linux/proc_fs.h> #include <linux/seq_file.h> #include <linux/scatterlist.h> +#include <linux/iommu-helper.h> #include <asm/byteorder.h> #include <asm/cache.h> /* for L1_CACHE_BYTES */ @@ -302,13 +303,17 @@ static int ioc_count; */ #define CCIO_SEARCH_LOOP(ioc, res_idx, mask, size) \ for(; res_ptr < res_end; ++res_ptr) { \ - if(0 == (*res_ptr & mask)) { \ - *res_ptr |= mask; \ - res_idx = (unsigned int)((unsigned long)res_ptr - (unsigned long)ioc->res_map); \ - ioc->res_hint = res_idx + (size >> 3); \ - goto resource_found; \ - } \ - } + int ret;\ + unsigned int idx;\ + idx = (unsigned int)((unsigned long)res_ptr - (unsigned long)ioc->res_map); \ + ret = iommu_is_span_boundary(idx << 3, pages_needed, 0, boundary_size);\ + if ((0 == (*res_ptr & mask)) && !ret) { \ + *res_ptr |= mask; \ + res_idx = idx;\ + ioc->res_hint = res_idx + (size >> 3); \ + goto resource_found; \ + } \ + } #define CCIO_FIND_FREE_MAPPING(ioa, res_idx, mask, size) \ u##size *res_ptr = (u##size *)&((ioc)->res_map[ioa->res_hint & ~((size >> 3) - 1)]); \ @@ -345,6 +350,7 @@ ccio_alloc_range(struct ioc *ioc, struct device *dev, size_t size) { unsigned int pages_needed = size >> IOVP_SHIFT; unsigned int res_idx; + unsigned long boundary_size; #ifdef CCIO_SEARCH_TIME unsigned long cr_start = mfctl(16); #endif @@ -360,6 +366,9 @@ ccio_alloc_range(struct ioc *ioc, struct device *dev, size_t size) ** ggg sacrifices another 710 to the computer gods. */ + boundary_size = ALIGN(dma_get_seg_boundary(dev) + 1, 1 << IOVP_SHIFT); + boundary_size >>= IOVP_SHIFT; + if (pages_needed <= 8) { /* * LAN traffic will not thrash the TLB IFF the same NIC |