X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=drivers%2Finfiniband%2Fhw%2Fmthca%2Fmthca_memfree.c;h=b224079d4e1fd8898944de6c083e1889eabadf6f;hb=5121df3ae45731ce98374a1b0b4d48f072643f42;hp=48f7c65e9aedb372336ec0db1e299276f94e01e8;hpb=2aa6eb313e57a8254b17e60b8bb5e0a2570d7776;p=linux-2.6-omap-h63xx.git

diff --git a/drivers/infiniband/hw/mthca/mthca_memfree.c b/drivers/infiniband/hw/mthca/mthca_memfree.c
index 48f7c65e9ae..b224079d4e1 100644
--- a/drivers/infiniband/hw/mthca/mthca_memfree.c
+++ b/drivers/infiniband/hw/mthca/mthca_memfree.c
@@ -36,6 +36,7 @@
 
 #include <linux/mm.h>
 #include <linux/scatterlist.h>
+#include <linux/sched.h>
 
 #include <asm/page.h>
 
@@ -70,7 +71,7 @@ static void mthca_free_icm_pages(struct mthca_dev *dev, struct mthca_icm_chunk *
 			     PCI_DMA_BIDIRECTIONAL);
 
 	for (i = 0; i < chunk->npages; ++i)
-		__free_pages(chunk->mem[i].page,
+		__free_pages(sg_page(&chunk->mem[i]),
 			     get_order(chunk->mem[i].length));
 }
 
@@ -80,7 +81,7 @@ static void mthca_free_icm_coherent(struct mthca_dev *dev, struct mthca_icm_chun
 
 	for (i = 0; i < chunk->npages; ++i) {
 		dma_free_coherent(&dev->pdev->dev, chunk->mem[i].length,
-				  lowmem_page_address(chunk->mem[i].page),
+				  lowmem_page_address(sg_page(&chunk->mem[i])),
 				  sg_dma_address(&chunk->mem[i]));
 	}
 }
@@ -106,12 +107,13 @@ void mthca_free_icm(struct mthca_dev *dev, struct mthca_icm *icm, int coherent)
 
 static int mthca_alloc_icm_pages(struct scatterlist *mem, int order, gfp_t gfp_mask)
 {
-	mem->page = alloc_pages(gfp_mask, order);
-	if (!mem->page)
+	struct page *page;
+
+	page = alloc_pages(gfp_mask, order);
+	if (!page)
 		return -ENOMEM;
 
-	mem->length = PAGE_SIZE << order;
-	mem->offset = 0;
+	sg_set_page(mem, page, PAGE_SIZE << order, 0);
 	return 0;
 }
 
@@ -156,6 +158,7 @@ struct mthca_icm *mthca_alloc_icm(struct mthca_dev *dev, int npages,
 			if (!chunk)
 				goto fail;
 
+			sg_init_table(chunk->mem, MTHCA_ICM_CHUNK_LEN);
 			chunk->npages = 0;
 			chunk->nsg    = 0;
 			list_add_tail(&chunk->list, &icm->chunk_list);
@@ -303,7 +306,7 @@ void *mthca_table_find(struct mthca_icm_table *table, int obj, dma_addr_t *dma_h
 			 * so if we found the page, dma_handle has already
 			 * been assigned to. */
 			if (chunk->mem[i].length > offset) {
-				page = chunk->mem[i].page;
+				page = sg_page(&chunk->mem[i]);
 				goto out;
 			}
 			offset -= chunk->mem[i].length;
@@ -356,12 +359,14 @@ struct mthca_icm_table *mthca_alloc_icm_table(struct mthca_dev *dev,
 					      int use_lowmem, int use_coherent)
 {
 	struct mthca_icm_table *table;
+	int obj_per_chunk;
 	int num_icm;
 	unsigned chunk_size;
 	int i;
 	u8 status;
 
-	num_icm = (obj_size * nobj + MTHCA_TABLE_CHUNK_SIZE - 1) / MTHCA_TABLE_CHUNK_SIZE;
+	obj_per_chunk = MTHCA_TABLE_CHUNK_SIZE / obj_size;
+	num_icm = DIV_ROUND_UP(nobj, obj_per_chunk);
 
 	table = kmalloc(sizeof *table + num_icm * sizeof *table->icm, GFP_KERNEL);
 	if (!table)
@@ -409,7 +414,7 @@ err:
 		if (table->icm[i]) {
 			mthca_UNMAP_ICM(dev, virt + i * MTHCA_TABLE_CHUNK_SIZE,
 					MTHCA_TABLE_CHUNK_SIZE / MTHCA_ICM_PAGE_SIZE,
-				        &status);
+					&status);
 			mthca_free_icm(dev, table->icm[i], table->coherent);
 		}
 
@@ -444,6 +449,7 @@ static u64 mthca_uarc_virt(struct mthca_dev *dev, struct mthca_uar *uar, int pag
 int mthca_map_user_db(struct mthca_dev *dev, struct mthca_uar *uar,
 		      struct mthca_user_db_table *db_tab, int index, u64 uaddr)
 {
+	struct page *pages[1];
 	int ret = 0;
 	u8 status;
 	int i;
@@ -471,16 +477,16 @@ int mthca_map_user_db(struct mthca_dev *dev, struct mthca_uar *uar,
 	}
 
 	ret = get_user_pages(current, current->mm, uaddr & PAGE_MASK, 1, 1, 0,
-			     &db_tab->page[i].mem.page, NULL);
+			     pages, NULL);
 	if (ret < 0)
 		goto out;
 
-	db_tab->page[i].mem.length = MTHCA_ICM_PAGE_SIZE;
-	db_tab->page[i].mem.offset = uaddr & ~PAGE_MASK;
+	sg_set_page(&db_tab->page[i].mem, pages[0], MTHCA_ICM_PAGE_SIZE,
+			uaddr & ~PAGE_MASK);
 
 	ret = pci_map_sg(dev->pdev, &db_tab->page[i].mem, 1, PCI_DMA_TODEVICE);
 	if (ret < 0) {
-		put_page(db_tab->page[i].mem.page);
+		put_page(pages[0]);
 		goto out;
 	}
 
@@ -490,7 +496,7 @@ int mthca_map_user_db(struct mthca_dev *dev, struct mthca_uar *uar,
 		ret = -EINVAL;
 	if (ret) {
 		pci_unmap_sg(dev->pdev, &db_tab->page[i].mem, 1, PCI_DMA_TODEVICE);
-		put_page(db_tab->page[i].mem.page);
+		put_page(sg_page(&db_tab->page[i].mem));
 		goto out;
 	}
 
@@ -538,6 +544,7 @@ struct mthca_user_db_table *mthca_init_user_db_tab(struct mthca_dev *dev)
 	for (i = 0; i < npages; ++i) {
 		db_tab->page[i].refcount = 0;
 		db_tab->page[i].uvirt    = 0;
+		sg_init_table(&db_tab->page[i].mem, 1);
 	}
 
 	return db_tab;
@@ -556,7 +563,7 @@ void mthca_cleanup_user_db_tab(struct mthca_dev *dev, struct mthca_uar *uar,
 		if (db_tab->page[i].uvirt) {
 			mthca_UNMAP_ICM(dev, mthca_uarc_virt(dev, uar, i), 1, &status);
 			pci_unmap_sg(dev->pdev, &db_tab->page[i].mem, 1, PCI_DMA_TODEVICE);
-			put_page(db_tab->page[i].mem.page);
+			put_page(sg_page(&db_tab->page[i].mem));
 		}
 	}