cxgb3: simplify iwch_get_dma_wr

[sfrench/cifs-2.6.git] / drivers / infiniband / hw / cxgb3 / iwch_mem.c

diff --git a/drivers/infiniband/hw/cxgb3/iwch_mem.c b/drivers/infiniband/hw/cxgb3/iwch_mem.c
index 3a5e27db4a15fdd9a31001e349d2f984aba44636..1d04c872c9d58c69a47dbb1b1c38f2ae69d80cde 100644 (file)
--- a/drivers/infiniband/hw/cxgb3/iwch_mem.c
+++ b/drivers/infiniband/hw/cxgb3/iwch_mem.c
@@ -99,74 +99,3 @@ int iwch_write_pbl(struct iwch_mr *mhp, __be64 *pages, int npages, int offset)
        return cxio_write_pbl(&mhp->rhp->rdev, pages,
                              mhp->attr.pbl_addr + (offset << 3), npages);
 }
-
-int build_phys_page_list(struct ib_phys_buf *buffer_list,
-                                       int num_phys_buf,
-                                       u64 *iova_start,
-                                       u64 *total_size,
-                                       int *npages,
-                                       int *shift,
-                                       __be64 **page_list)
-{
-       u64 mask;
-       int i, j, n;
-
-       mask = 0;
-       *total_size = 0;
-       for (i = 0; i < num_phys_buf; ++i) {
-               if (i != 0 && buffer_list[i].addr & ~PAGE_MASK)
-                       return -EINVAL;
-               if (i != 0 && i != num_phys_buf - 1 &&
-                   (buffer_list[i].size & ~PAGE_MASK))
-                       return -EINVAL;
-               *total_size += buffer_list[i].size;
-               if (i > 0)
-                       mask |= buffer_list[i].addr;
-               else
-                       mask |= buffer_list[i].addr & PAGE_MASK;
-               if (i != num_phys_buf - 1)
-                       mask |= buffer_list[i].addr + buffer_list[i].size;
-               else
-                       mask |= (buffer_list[i].addr + buffer_list[i].size +
-                               PAGE_SIZE - 1) & PAGE_MASK;
-       }
-
-       if (*total_size > 0xFFFFFFFFULL)
-               return -ENOMEM;
-
-       /* Find largest page shift we can use to cover buffers */
-       for (*shift = PAGE_SHIFT; *shift < 27; ++(*shift))
-               if ((1ULL << *shift) & mask)
-                       break;
-
-       buffer_list[0].size += buffer_list[0].addr & ((1ULL << *shift) - 1);
-       buffer_list[0].addr &= ~0ull << *shift;
-
-       *npages = 0;
-       for (i = 0; i < num_phys_buf; ++i)
-               *npages += (buffer_list[i].size +
-                       (1ULL << *shift) - 1) >> *shift;
-
-       if (!*npages)
-               return -EINVAL;
-
-       *page_list = kmalloc(sizeof(u64) * *npages, GFP_KERNEL);
-       if (!*page_list)
-               return -ENOMEM;
-
-       n = 0;
-       for (i = 0; i < num_phys_buf; ++i)
-               for (j = 0;
-                    j < (buffer_list[i].size + (1ULL << *shift) - 1) >> *shift;
-                    ++j)
-                       (*page_list)[n++] = cpu_to_be64(buffer_list[i].addr +
-                           ((u64) j << *shift));
-
-       PDBG("%s va 0x%llx mask 0x%llx shift %d len %lld pbl_size %d\n",
-            __func__, (unsigned long long) *iova_start,
-            (unsigned long long) mask, *shift, (unsigned long long) *total_size,
-            *npages);
-
-       return 0;
-
-}