diff options
author | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2009-03-27 14:46:46 +0300 |
---|---|---|
committer | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2009-03-27 14:46:46 +0300 |
commit | 2298169418f43ba5e0919762a4bab95a1227872a (patch) | |
tree | 67cf3133c7bae747ad957c68a650534105a7d8e7 /drivers/ide | |
parent | 130e886708d6e11f3d54e5d27c266578de56f343 (diff) | |
download | linux-2298169418f43ba5e0919762a4bab95a1227872a.tar.xz |
ide: pass command to ide_map_sg()
* Set IDE_TFLAG_WRITE flag and ->rq also for ATA_CMD_PACKET
commands.
* Pass command to ->dma_setup method and update all its
implementations accordingly.
* Pass command instead of request to ide_build_sglist(),
*_build_dmatable() and ide_map_sg().
While at it:
* Fix scc_dma_setup() documentation + use ATA_DMA_WR define.
* Rename sgiioc4_build_dma_table() to sgiioc4_build_dmatable(),
change return value type to 'int' and drop unused 'ddir'
argument.
* Do some minor cleanups in [tx4939]ide_dma_setup().
There should be no functional changes caused by this patch.
Acked-by: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'drivers/ide')
-rw-r--r-- | drivers/ide/alim15x3.c | 7 | ||||
-rw-r--r-- | drivers/ide/au1xxx-ide.c | 15 | ||||
-rw-r--r-- | drivers/ide/icside.c | 7 | ||||
-rw-r--r-- | drivers/ide/ide-atapi.c | 16 | ||||
-rw-r--r-- | drivers/ide/ide-disk.c | 10 | ||||
-rw-r--r-- | drivers/ide/ide-dma-sff.c | 18 | ||||
-rw-r--r-- | drivers/ide/ide-dma.c | 15 | ||||
-rw-r--r-- | drivers/ide/ide-floppy.c | 6 | ||||
-rw-r--r-- | drivers/ide/ide-io.c | 6 | ||||
-rw-r--r-- | drivers/ide/ide-taskfile.c | 4 | ||||
-rw-r--r-- | drivers/ide/ns87415.c | 4 | ||||
-rw-r--r-- | drivers/ide/pmac.c | 19 | ||||
-rw-r--r-- | drivers/ide/scc_pata.c | 19 | ||||
-rw-r--r-- | drivers/ide/sgiioc4.c | 21 | ||||
-rw-r--r-- | drivers/ide/trm290.c | 10 | ||||
-rw-r--r-- | drivers/ide/tx4939ide.c | 26 |
16 files changed, 95 insertions, 108 deletions
diff --git a/drivers/ide/alim15x3.c b/drivers/ide/alim15x3.c index d3513b6b8530..e837fd9f196f 100644 --- a/drivers/ide/alim15x3.c +++ b/drivers/ide/alim15x3.c @@ -191,17 +191,18 @@ static void ali_set_dma_mode(ide_drive_t *drive, const u8 speed) /** * ali15x3_dma_setup - begin a DMA phase * @drive: target device + * @cmd: command * * Returns 1 if the DMA cannot be performed, zero on success. */ -static int ali15x3_dma_setup(ide_drive_t *drive) +static int ali15x3_dma_setup(ide_drive_t *drive, struct ide_cmd *cmd) { if (m5229_revision < 0xC2 && drive->media != ide_disk) { - if (rq_data_dir(drive->hwif->rq)) + if (cmd->tf_flags & IDE_TFLAG_WRITE) return 1; /* try PIO instead of DMA */ } - return ide_dma_setup(drive); + return ide_dma_setup(drive, cmd); } /** diff --git a/drivers/ide/au1xxx-ide.c b/drivers/ide/au1xxx-ide.c index 3ace0cda5452..58485d6cb026 100644 --- a/drivers/ide/au1xxx-ide.c +++ b/drivers/ide/au1xxx-ide.c @@ -209,15 +209,14 @@ static void auide_set_dma_mode(ide_drive_t *drive, const u8 speed) */ #ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA -static int auide_build_dmatable(ide_drive_t *drive) +static int auide_build_dmatable(ide_drive_t *drive, struct ide_cmd *cmd) { ide_hwif_t *hwif = drive->hwif; - struct request *rq = hwif->rq; _auide_hwif *ahwif = &auide_hwif; struct scatterlist *sg; - int i = hwif->cmd.sg_nents, iswrite, count = 0; + int i = cmd->sg_nents, count = 0; + int iswrite = !!(cmd->tf_flags & IDE_TFLAG_WRITE); - iswrite = (rq_data_dir(rq) == WRITE); /* Save for interrupt context */ ahwif->drive = drive; @@ -298,12 +297,10 @@ static void auide_dma_exec_cmd(ide_drive_t *drive, u8 command) (2*WAIT_CMD), NULL); } -static int auide_dma_setup(ide_drive_t *drive) +static int auide_dma_setup(ide_drive_t *drive, struct ide_cmd *cmd) { - struct request *rq = drive->hwif->rq; - - if (!auide_build_dmatable(drive)) { - ide_map_sg(drive, rq); + if (auide_build_dmatable(drive, cmd) == 0) { + ide_map_sg(drive, cmd); return 1; } diff --git a/drivers/ide/icside.c b/drivers/ide/icside.c index bdfeb1222d52..3628b2147902 100644 --- a/drivers/ide/icside.c +++ b/drivers/ide/icside.c @@ -307,15 +307,14 @@ static void icside_dma_start(ide_drive_t *drive) enable_dma(ec->dma); } -static int icside_dma_setup(ide_drive_t *drive) +static int icside_dma_setup(ide_drive_t *drive, struct ide_cmd *cmd) { ide_hwif_t *hwif = drive->hwif; struct expansion_card *ec = ECARD_DEV(hwif->dev); struct icside_state *state = ecard_get_drvdata(ec); - struct request *rq = hwif->rq; unsigned int dma_mode; - if (rq_data_dir(rq)) + if (cmd->tf_flags & IDE_TFLAG_WRITE) dma_mode = DMA_MODE_WRITE; else dma_mode = DMA_MODE_READ; @@ -344,7 +343,7 @@ static int icside_dma_setup(ide_drive_t *drive) * Tell the DMA engine about the SG table and * data direction. */ - set_dma_sg(ec->dma, hwif->sg_table, hwif->cmd.sg_nents); + set_dma_sg(ec->dma, hwif->sg_table, cmd->sg_nents); set_dma_mode(ec->dma, dma_mode); drive->waiting_for_dma = 1; diff --git a/drivers/ide/ide-atapi.c b/drivers/ide/ide-atapi.c index c3fd528a1b4d..b56af49f876b 100644 --- a/drivers/ide/ide-atapi.c +++ b/drivers/ide/ide-atapi.c @@ -638,12 +638,20 @@ ide_startstop_t ide_issue_pc(ide_drive_t *drive) { struct ide_atapi_pc *pc; ide_hwif_t *hwif = drive->hwif; + const struct ide_dma_ops *dma_ops = hwif->dma_ops; + struct ide_cmd *cmd = &hwif->cmd; ide_expiry_t *expiry = NULL; struct request *rq = hwif->rq; unsigned int timeout; u32 tf_flags; u16 bcount; + if (drive->media != ide_floppy) { + if (rq_data_dir(rq)) + cmd->tf_flags |= IDE_TFLAG_WRITE; + cmd->rq = rq; + } + if (dev_is_idecd(drive)) { tf_flags = IDE_TFLAG_OUT_NSECT | IDE_TFLAG_OUT_LBAL; bcount = ide_cd_get_xferlen(rq); @@ -651,8 +659,8 @@ ide_startstop_t ide_issue_pc(ide_drive_t *drive) timeout = ATAPI_WAIT_PC; if (drive->dma) { - if (ide_build_sglist(drive, rq)) - drive->dma = !hwif->dma_ops->dma_setup(drive); + if (ide_build_sglist(drive, cmd)) + drive->dma = !dma_ops->dma_setup(drive, cmd); else drive->dma = 0; } @@ -675,8 +683,8 @@ ide_startstop_t ide_issue_pc(ide_drive_t *drive) if ((pc->flags & PC_FLAG_DMA_OK) && (drive->dev_flags & IDE_DFLAG_USING_DMA)) { - if (ide_build_sglist(drive, rq)) - drive->dma = !hwif->dma_ops->dma_setup(drive); + if (ide_build_sglist(drive, cmd)) + drive->dma = !dma_ops->dma_setup(drive, cmd); else drive->dma = 0; } diff --git a/drivers/ide/ide-disk.c b/drivers/ide/ide-disk.c index d8caa65ca7a5..4b32c4eb7b82 100644 --- a/drivers/ide/ide-disk.c +++ b/drivers/ide/ide-disk.c @@ -99,11 +99,6 @@ static ide_startstop_t __ide_do_rw_disk(ide_drive_t *drive, struct request *rq, memset(&cmd, 0, sizeof(cmd)); cmd.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; - if (dma == 0) { - ide_init_sg_cmd(&cmd, nsectors); - ide_map_sg(drive, rq); - } - if (drive->dev_flags & IDE_DFLAG_LBA) { if (lba48) { pr_debug("%s: LBA=0x%012llx\n", drive->name, @@ -156,6 +151,11 @@ static ide_startstop_t __ide_do_rw_disk(ide_drive_t *drive, struct request *rq, ide_tf_set_cmd(drive, &cmd, dma); cmd.rq = rq; + if (dma == 0) { + ide_init_sg_cmd(&cmd, nsectors); + ide_map_sg(drive, &cmd); + } + rc = do_rw_taskfile(drive, &cmd); if (rc == ide_stopped && dma) { diff --git a/drivers/ide/ide-dma-sff.c b/drivers/ide/ide-dma-sff.c index 7bf28a9b6f65..b7eb810c7b8f 100644 --- a/drivers/ide/ide-dma-sff.c +++ b/drivers/ide/ide-dma-sff.c @@ -111,7 +111,7 @@ EXPORT_SYMBOL_GPL(ide_dma_host_set); * May also be invoked from trm290.c */ -int ide_build_dmatable(ide_drive_t *drive, struct request *rq) +int ide_build_dmatable(ide_drive_t *drive, struct ide_cmd *cmd) { ide_hwif_t *hwif = drive->hwif; __le32 *table = (__le32 *)hwif->dmatable_cpu; @@ -120,7 +120,7 @@ int ide_build_dmatable(ide_drive_t *drive, struct request *rq) struct scatterlist *sg; u8 is_trm290 = !!(hwif->host_flags & IDE_HFLAG_TRM290); - for_each_sg(hwif->sg_table, sg, hwif->cmd.sg_nents, i) { + for_each_sg(hwif->sg_table, sg, cmd->sg_nents, i) { u32 cur_addr, cur_len, xcount, bcount; cur_addr = sg_dma_address(sg); @@ -175,6 +175,7 @@ EXPORT_SYMBOL_GPL(ide_build_dmatable); /** * ide_dma_setup - begin a DMA phase * @drive: target device + * @cmd: command * * Build an IDE DMA PRD (IDE speak for scatter gather table) * and then set up the DMA transfer registers for a device @@ -185,17 +186,16 @@ EXPORT_SYMBOL_GPL(ide_build_dmatable); * is returned. */ -int ide_dma_setup(ide_drive_t *drive) +int ide_dma_setup(ide_drive_t *drive, struct ide_cmd *cmd) { ide_hwif_t *hwif = drive->hwif; - struct request *rq = hwif->rq; - unsigned int reading = rq_data_dir(rq) ? 0 : ATA_DMA_WR; u8 mmio = (hwif->host_flags & IDE_HFLAG_MMIO) ? 1 : 0; + u8 rw = (cmd->tf_flags & IDE_TFLAG_WRITE) ? 0 : ATA_DMA_WR; u8 dma_stat; /* fall back to pio! */ - if (!ide_build_dmatable(drive, rq)) { - ide_map_sg(drive, rq); + if (ide_build_dmatable(drive, cmd) == 0) { + ide_map_sg(drive, cmd); return 1; } @@ -208,9 +208,9 @@ int ide_dma_setup(ide_drive_t *drive) /* specify r/w */ if (mmio) - writeb(reading, (void __iomem *)(hwif->dma_base + ATA_DMA_CMD)); + writeb(rw, (void __iomem *)(hwif->dma_base + ATA_DMA_CMD)); else - outb(reading, hwif->dma_base + ATA_DMA_CMD); + outb(rw, hwif->dma_base + ATA_DMA_CMD); /* read DMA status for INTR & ERROR flags */ dma_stat = hwif->dma_ops->dma_sff_read_status(hwif); diff --git a/drivers/ide/ide-dma.c b/drivers/ide/ide-dma.c index 8f5e32e692f0..ad4edab9b0a9 100644 --- a/drivers/ide/ide-dma.c +++ b/drivers/ide/ide-dma.c @@ -120,7 +120,7 @@ int ide_dma_good_drive(ide_drive_t *drive) /** * ide_build_sglist - map IDE scatter gather for DMA I/O * @drive: the drive to build the DMA table for - * @rq: the request holding the sg list + * @cmd: command * * Perform the DMA mapping magic necessary to access the source or * target buffers of a request via DMA. The lower layers of the @@ -128,23 +128,22 @@ int ide_dma_good_drive(ide_drive_t *drive) * operate in a portable fashion. */ -int ide_build_sglist(ide_drive_t *drive, struct request *rq) +int ide_build_sglist(ide_drive_t *drive, struct ide_cmd *cmd) { ide_hwif_t *hwif = drive->hwif; struct scatterlist *sg = hwif->sg_table; - struct ide_cmd *cmd = &hwif->cmd; int i; - ide_map_sg(drive, rq); + ide_map_sg(drive, cmd); - if (rq_data_dir(rq) == READ) - cmd->sg_dma_direction = DMA_FROM_DEVICE; - else + if (cmd->tf_flags & IDE_TFLAG_WRITE) cmd->sg_dma_direction = DMA_TO_DEVICE; + else + cmd->sg_dma_direction = DMA_FROM_DEVICE; i = dma_map_sg(hwif->dev, sg, cmd->sg_nents, cmd->sg_dma_direction); if (i == 0) - ide_map_sg(drive, rq); + ide_map_sg(drive, cmd); else { cmd->orig_sg_nents = cmd->sg_nents; cmd->sg_nents = i; diff --git a/drivers/ide/ide-floppy.c b/drivers/ide/ide-floppy.c index 8c518c6a6477..ee3e77a7a727 100644 --- a/drivers/ide/ide-floppy.c +++ b/drivers/ide/ide-floppy.c @@ -285,9 +285,13 @@ static ide_startstop_t ide_floppy_do_request(ide_drive_t *drive, goto out_end; } + if (rq_data_dir(rq)) + cmd->tf_flags |= IDE_TFLAG_WRITE; + cmd->rq = rq; + if (blk_fs_request(rq) || pc->req_xfer) { ide_init_sg_cmd(cmd, rq->nr_sectors); - ide_map_sg(drive, rq); + ide_map_sg(drive, cmd); } pc->sg = hwif->sg_table; diff --git a/drivers/ide/ide-io.c b/drivers/ide/ide-io.c index f59c709052d2..47404f5526f1 100644 --- a/drivers/ide/ide-io.c +++ b/drivers/ide/ide-io.c @@ -228,11 +228,11 @@ static ide_startstop_t do_special (ide_drive_t *drive) return ide_stopped; } -void ide_map_sg(ide_drive_t *drive, struct request *rq) +void ide_map_sg(ide_drive_t *drive, struct ide_cmd *cmd) { ide_hwif_t *hwif = drive->hwif; - struct ide_cmd *cmd = &hwif->cmd; struct scatterlist *sg = hwif->sg_table; + struct request *rq = cmd->rq; if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) { sg_init_one(sg, rq->buffer, rq->nr_sectors * SECTOR_SIZE); @@ -273,7 +273,7 @@ static ide_startstop_t execute_drive_cmd (ide_drive_t *drive, if (cmd) { if (cmd->protocol == ATA_PROT_PIO) { ide_init_sg_cmd(cmd, rq->nr_sectors); - ide_map_sg(drive, rq); + ide_map_sg(drive, cmd); } return do_rw_taskfile(drive, cmd); diff --git a/drivers/ide/ide-taskfile.c b/drivers/ide/ide-taskfile.c index db6d7821e45b..3b23bd11945e 100644 --- a/drivers/ide/ide-taskfile.c +++ b/drivers/ide/ide-taskfile.c @@ -102,8 +102,8 @@ ide_startstop_t do_rw_taskfile(ide_drive_t *drive, struct ide_cmd *orig_cmd) return ide_started; default: if ((drive->dev_flags & IDE_DFLAG_USING_DMA) == 0 || - ide_build_sglist(drive, hwif->rq) == 0 || - dma_ops->dma_setup(drive)) + ide_build_sglist(drive, cmd) == 0 || + dma_ops->dma_setup(drive, cmd)) return ide_stopped; dma_ops->dma_exec_cmd(drive, tf->command); dma_ops->dma_start(drive); diff --git a/drivers/ide/ns87415.c b/drivers/ide/ns87415.c index d93c80016326..cf6d9a9c8a27 100644 --- a/drivers/ide/ns87415.c +++ b/drivers/ide/ns87415.c @@ -216,11 +216,11 @@ static int ns87415_dma_end(ide_drive_t *drive) return (dma_stat & 7) != 4; } -static int ns87415_dma_setup(ide_drive_t *drive) +static int ns87415_dma_setup(ide_drive_t *drive, struct ide_cmd *cmd) { /* select DMA xfer */ ns87415_prepare_drive(drive, 1); - if (!ide_dma_setup(drive)) + if (ide_dma_setup(drive, cmd) == 0) return 0; /* DMA failed: select PIO xfer */ ns87415_prepare_drive(drive, 0); diff --git a/drivers/ide/pmac.c b/drivers/ide/pmac.c index f5b85f4c1b65..337d2d5b3028 100644 --- a/drivers/ide/pmac.c +++ b/drivers/ide/pmac.c @@ -404,7 +404,6 @@ kauai_lookup_timing(struct kauai_timing* table, int cycle_time) #define IDE_WAKEUP_DELAY (1*HZ) static int pmac_ide_init_dma(ide_hwif_t *, const struct ide_port_info *); -static int pmac_ide_build_dmatable(ide_drive_t *drive, struct request *rq); static void pmac_ide_selectproc(ide_drive_t *drive); static void pmac_ide_kauai_selectproc(ide_drive_t *drive); @@ -1422,8 +1421,7 @@ out: * pmac_ide_build_dmatable builds the DBDMA command list * for a transfer and sets the DBDMA channel to point to it. */ -static int -pmac_ide_build_dmatable(ide_drive_t *drive, struct request *rq) +static int pmac_ide_build_dmatable(ide_drive_t *drive, struct ide_cmd *cmd) { ide_hwif_t *hwif = drive->hwif; pmac_ide_hwif_t *pmif = @@ -1431,8 +1429,8 @@ pmac_ide_build_dmatable(ide_drive_t *drive, struct request *rq) struct dbdma_cmd *table; volatile struct dbdma_regs __iomem *dma = pmif->dma_regs; struct scatterlist *sg; - int wr = (rq_data_dir(rq) == WRITE); - int i = hwif->cmd.sg_nents, count = 0; + int wr = !!(cmd->tf_flags & IDE_TFLAG_WRITE); + int i = cmd->sg_nents, count = 0; /* DMA table is already aligned */ table = (struct dbdma_cmd *) pmif->dma_table_cpu; @@ -1504,23 +1502,22 @@ use_pio_instead: * Prepare a DMA transfer. We build the DMA table, adjust the timings for * a read on KeyLargo ATA/66 and mark us as waiting for DMA completion */ -static int -pmac_ide_dma_setup(ide_drive_t *drive) +static int pmac_ide_dma_setup(ide_drive_t *drive, struct ide_cmd *cmd) { ide_hwif_t *hwif = drive->hwif; pmac_ide_hwif_t *pmif = (pmac_ide_hwif_t *)dev_get_drvdata(hwif->gendev.parent); - struct request *rq = hwif->rq; u8 unit = drive->dn & 1, ata4 = (pmif->kind == controller_kl_ata4); + u8 write = !!(cmd->tf_flags & IDE_TFLAG_WRITE); - if (!pmac_ide_build_dmatable(drive, rq)) { - ide_map_sg(drive, rq); + if (pmac_ide_build_dmatable(drive, cmd) == 0) { + ide_map_sg(drive, cmd); return 1; } /* Apple adds 60ns to wrDataSetup on reads */ if (ata4 && (pmif->timings[unit] & TR_66_UDMA_EN)) { - writel(pmif->timings[unit] + (!rq_data_dir(rq) ? 0x00800000UL : 0), + writel(pmif->timings[unit] + (write ? 0 : 0x00800000UL), PMAC_IDE_REG(IDE_TIMING_CONFIG)); (void)readl(PMAC_IDE_REG(IDE_TIMING_CONFIG)); } diff --git a/drivers/ide/scc_pata.c b/drivers/ide/scc_pata.c index ada866744622..1f2805ce9889 100644 --- a/drivers/ide/scc_pata.c +++ b/drivers/ide/scc_pata.c @@ -303,8 +303,9 @@ static void scc_dma_host_set(ide_drive_t *drive, int on) } /** - * scc_ide_dma_setup - begin a DMA phase + * scc_dma_setup - begin a DMA phase * @drive: target device + * @cmd: command * * Build an IDE DMA PRD (IDE speak for scatter gather table) * and then set up the DMA transfer registers. @@ -313,21 +314,15 @@ static void scc_dma_host_set(ide_drive_t *drive, int on) * is returned. */ -static int scc_dma_setup(ide_drive_t *drive) +static int scc_dma_setup(ide_drive_t *drive, struct ide_cmd *cmd) { ide_hwif_t *hwif = drive->hwif; - struct request *rq = hwif->rq; - unsigned int reading; + u32 rw = (cmd->tf_flags & IDE_TFLAG_WRITE) ? 0 : ATA_DMA_WR; u8 dma_stat; - if (rq_data_dir(rq)) - reading = 0; - else - reading = 1 << 3; - /* fall back to pio! */ - if (!ide_build_dmatable(drive, rq)) { - ide_map_sg(drive, rq); + if (ide_build_dmatable(drive, cmd) == 0) { + ide_map_sg(drive, cmd); return 1; } @@ -335,7 +330,7 @@ static int scc_dma_setup(ide_drive_t *drive) out_be32((void __iomem *)(hwif->dma_base + 8), hwif->dmatable_dma); /* specify r/w */ - out_be32((void __iomem *)hwif->dma_base, reading); + out_be32((void __iomem *)hwif->dma_base, rw); /* read DMA status for INTR & ERROR flags */ dma_stat = scc_dma_sff_read_status(hwif); diff --git a/drivers/ide/sgiioc4.c b/drivers/ide/sgiioc4.c index b0769e96d32f..b12de8346c73 100644 --- a/drivers/ide/sgiioc4.c +++ b/drivers/ide/sgiioc4.c @@ -424,12 +424,11 @@ sgiioc4_configure_for_dma(int dma_direction, ide_drive_t * drive) /* | Upper 32 bits - Zero |EOL| 15 unused | 16 Bit Length| */ /* --------------------------------------------------------------------- */ /* Creates the scatter gather list, DMA Table */ -static unsigned int -sgiioc4_build_dma_table(ide_drive_t * drive, struct request *rq, int ddir) +static int sgiioc4_build_dmatable(ide_drive_t *drive, struct ide_cmd *cmd) { ide_hwif_t *hwif = drive->hwif; unsigned int *table = hwif->dmatable_cpu; - unsigned int count = 0, i = hwif->cmd.sg_nents; + unsigned int count = 0, i = cmd->sg_nents; struct scatterlist *sg = hwif->sg_table; while (i && sg_dma_len(sg)) { @@ -484,24 +483,18 @@ use_pio_instead: return 0; /* revert to PIO for this request */ } -static int sgiioc4_dma_setup(ide_drive_t *drive) +static int sgiioc4_dma_setup(ide_drive_t *drive, struct ide_cmd *cmd) { - struct request *rq = drive->hwif->rq; - unsigned int count = 0; int ddir; + u8 write = !!(cmd->tf_flags & IDE_TFLAG_WRITE); - if (rq_data_dir(rq)) - ddir = PCI_DMA_TODEVICE; - else - ddir = PCI_DMA_FROMDEVICE; - - if (!(count = sgiioc4_build_dma_table(drive, rq, ddir))) { + if (sgiioc4_build_dmatable(drive, cmd) == 0) { /* try PIO instead of DMA */ - ide_map_sg(drive, rq); + ide_map_sg(drive, cmd); return 1; } - if (rq_data_dir(rq)) + if (write) /* Writes TO the IOC4 FROM Main Memory */ ddir = IOC4_DMA_READ; else diff --git a/drivers/ide/trm290.c b/drivers/ide/trm290.c index e8279f32f9a2..746858a7338d 100644 --- a/drivers/ide/trm290.c +++ b/drivers/ide/trm290.c @@ -181,13 +181,12 @@ static void trm290_dma_exec_cmd(ide_drive_t *drive, u8 command) ide_execute_command(drive, command, &ide_dma_intr, WAIT_CMD, NULL); } -static int trm290_dma_setup(ide_drive_t *drive) +static int trm290_dma_setup(ide_drive_t *drive, struct ide_cmd *cmd) { ide_hwif_t *hwif = drive->hwif; - struct request *rq = hwif->rq; unsigned int count, rw; - if (rq_data_dir(rq)) { + if (cmd->tf_flags & IDE_TFLAG_WRITE) { #ifdef TRM290_NO_DMA_WRITES /* always use PIO for writes */ trm290_prepare_drive(drive, 0); /* select PIO xfer */ @@ -197,8 +196,9 @@ static int trm290_dma_setup(ide_drive_t *drive) } else rw = 2; - if (!(count = ide_build_dmatable(drive, rq))) { - ide_map_sg(drive, rq); + count = ide_build_dmatable(drive, cmd); + if (count == 0) { + ide_map_sg(drive, cmd); /* try PIO instead of DMA */ trm290_prepare_drive(drive, 0); /* select PIO xfer */ return 1; diff --git a/drivers/ide/tx4939ide.c b/drivers/ide/tx4939ide.c index 8d155ec8cca9..39e3316ab63f 100644 --- a/drivers/ide/tx4939ide.c +++ b/drivers/ide/tx4939ide.c @@ -232,7 +232,7 @@ static u8 tx4939ide_clear_dma_status(void __iomem *base) #ifdef __BIG_ENDIAN /* custom ide_build_dmatable to handle swapped layout */ -static int tx4939ide_build_dmatable(ide_drive_t *drive, struct request *rq) +static int tx4939ide_build_dmatable(ide_drive_t *drive, struct ide_cmd *cmd) { ide_hwif_t *hwif = drive->hwif; u32 *table = (u32 *)hwif->dmatable_cpu; @@ -240,7 +240,7 @@ static int tx4939ide_build_dmatable(ide_drive_t *drive, struct request *rq) int i; struct scatterlist *sg; - for_each_sg(hwif->sg_table, sg, hwif->cmd.sg_nents, i) { + for_each_sg(hwif->sg_table, sg, cmd->sg_nents, i) { u32 cur_addr, cur_len, bcount; cur_addr = sg_dma_address(sg); @@ -287,23 +287,15 @@ use_pio_instead: #define tx4939ide_build_dmatable ide_build_dmatable #endif -static int tx4939ide_dma_setup(ide_drive_t *drive) +static int tx4939ide_dma_setup(ide_drive_t *drive, struct ide_cmd *cmd) { ide_hwif_t *hwif = drive->hwif; void __iomem *base = TX4939IDE_BASE(hwif); - struct request *rq = hwif->rq; - u8 reading; - int nent; - - if (rq_data_dir(rq)) - reading = 0; - else - reading = ATA_DMA_WR; + u8 rw = (cmd->tf_flags & IDE_TFLAG_WRITE) ? 0 : ATA_DMA_WR; /* fall back to PIO! */ - nent = tx4939ide_build_dmatable(drive, rq); - if (!nent) { - ide_map_sg(drive, rq); + if (tx4939ide_build_dmatable(drive, cmd) == 0) { + ide_map_sg(drive, cmd); return 1; } @@ -311,7 +303,7 @@ static int tx4939ide_dma_setup(ide_drive_t *drive) tx4939ide_writel(hwif->dmatable_dma, base, TX4939IDE_PRD_Ptr); /* specify r/w */ - tx4939ide_writeb(reading, base, TX4939IDE_DMA_Cmd); + tx4939ide_writeb(rw, base, TX4939IDE_DMA_Cmd); /* clear INTR & ERROR flags */ tx4939ide_clear_dma_status(base); @@ -320,7 +312,9 @@ static int tx4939ide_dma_setup(ide_drive_t *drive) tx4939ide_writew(SECTOR_SIZE / 2, base, drive->dn ? TX4939IDE_Xfer_Cnt_2 : TX4939IDE_Xfer_Cnt_1); - tx4939ide_writew(rq->nr_sectors, base, TX4939IDE_Sec_Cnt); + + tx4939ide_writew(cmd->rq->nr_sectors, base, TX4939IDE_Sec_Cnt); + return 0; } |