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authorBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2008-10-13 21:39:47 +0200
committerBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2008-10-13 21:39:47 +0200
commit2bbd57cad3d72334c9fcc4e229a5a5b04dc6aebc (patch)
treec0866cb7b4a3e12d11179c65d86e2ba012db5002 /include
parentffa15a6915b7f6f6f69b4a66e1100a9c68d11250 (diff)
ide: switch to DMA-mapping API part #2
Follow-up to commit 5c05ff68b9a9b40a9be949497e0aa980185565cf ("ide: switch to DMA-mapping API"): * pci_{alloc,free}_consistent() -> dma_{alloc,free}_coherent() in ide_{allocate,release}_dma_engine(). * Add ->prd_max_nents and ->prd_ent_size fields to ide_hwif_t (+ set default values in ide_allocate_dma_engine()). * Make ide_{allocate,release}_dma_engine() available also for CONFIG_BLK_DEV_IDEDMA_SFF=n. Then convert au1xxx-ide.c, scc_pata.c and sgiioc4.c to use them. * Add missing ->init_dma method to scc_pata. This patch also fixes: - ->dmatable_cpu leak for au1xxx-ide - too early realease of ->dmatable_cpu for scc_pata - wrong amount of ->dmatable_cpu memory being freed for sgiioc4 While at it: - remove superfluous ->dma_base check from ide_unregister() - return -ENOMEM on error in ide_release_dma_engine() - beautify error message in ide_release_dma_engine() Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'include')
-rw-r--r--include/linux/ide.h17
1 files changed, 10 insertions, 7 deletions
diff --git a/include/linux/ide.h b/include/linux/ide.h
index 39aaff8ff457..8121aa9240c4 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -788,6 +788,12 @@ typedef struct hwif_s {
unsigned int *dmatable_cpu;
/* dma physical region descriptor table (dma view) */
dma_addr_t dmatable_dma;
+
+ /* maximum number of PRD table entries */
+ int prd_max_nents;
+ /* PRD entry size in bytes */
+ int prd_ent_size;
+
/* Scatter-gather list used to build the above */
struct scatterlist *sg_table;
int sg_max_nents; /* Maximum number of entries in it */
@@ -1423,14 +1429,14 @@ int ide_set_dma(ide_drive_t *);
void ide_check_dma_crc(ide_drive_t *);
ide_startstop_t ide_dma_intr(ide_drive_t *);
+int ide_allocate_dma_engine(ide_hwif_t *);
+void ide_release_dma_engine(ide_hwif_t *);
+
int ide_build_sglist(ide_drive_t *, struct request *);
void ide_destroy_dmatable(ide_drive_t *);
#ifdef CONFIG_BLK_DEV_IDEDMA_SFF
extern int ide_build_dmatable(ide_drive_t *, struct request *);
-int ide_allocate_dma_engine(ide_hwif_t *);
-void ide_release_dma_engine(ide_hwif_t *);
-
void ide_dma_host_set(ide_drive_t *, int);
extern int ide_dma_setup(ide_drive_t *);
void ide_dma_exec_cmd(ide_drive_t *, u8);
@@ -1453,11 +1459,8 @@ static inline void ide_dma_on(ide_drive_t *drive) { ; }
static inline void ide_dma_verbose(ide_drive_t *drive) { ; }
static inline int ide_set_dma(ide_drive_t *drive) { return 1; }
static inline void ide_check_dma_crc(ide_drive_t *drive) { ; }
-#endif /* CONFIG_BLK_DEV_IDEDMA */
-
-#ifndef CONFIG_BLK_DEV_IDEDMA_SFF
static inline void ide_release_dma_engine(ide_hwif_t *hwif) { ; }
-#endif
+#endif /* CONFIG_BLK_DEV_IDEDMA */
#ifdef CONFIG_BLK_DEV_IDEACPI
extern int ide_acpi_exec_tfs(ide_drive_t *drive);