From b788ee9c6561fd9219a503216284d61036a0dc0b Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Fri, 27 Mar 2009 12:46:46 +0100 Subject: [PATCH] ide: use do_rw_taskfile() for ATA_CMD_PACKET commands * Pass command to ide_issue_pc() and update ->do_request methods in ide-{cd,floppy,tape}.c accordingly. * Convert ide_pktcmd_tf_load() to ide_init_packet_cmd() which just initializes command structure and use do_rw_taskfile() to load ATA_CMD_PACKET commands. While at it: * Rename ide{floppy,tape}_issue_pc() to ide_{floppy,tape}_issue_pc(). There should be no functional changes caused by this patch. Acked-by: Borislav Petkov Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/ide/ide-atapi.c | 37 ++++++++++++------------------------- drivers/ide/ide-cd.c | 11 ++++++++++- drivers/ide/ide-floppy.c | 24 ++++++++++++++---------- drivers/ide/ide-tape.c | 19 ++++++++++++++----- drivers/ide/ide-taskfile.c | 3 ++- include/linux/ide.h | 2 +- 6 files changed, 53 insertions(+), 43 deletions(-) diff --git a/drivers/ide/ide-atapi.c b/drivers/ide/ide-atapi.c index b56af49f876b..75df05add1b9 100644 --- a/drivers/ide/ide-atapi.c +++ b/drivers/ide/ide-atapi.c @@ -487,23 +487,15 @@ next_irq: return ide_started; } -static void ide_pktcmd_tf_load(ide_drive_t *drive, u32 tf_flags, u16 bcount) +static void ide_init_packet_cmd(struct ide_cmd *cmd, u32 tf_flags, + u16 bcount, u8 dma) { - ide_hwif_t *hwif = drive->hwif; - struct ide_cmd cmd; - u8 dma = drive->dma; - - memset(&cmd, 0, sizeof(cmd)); - cmd.tf_flags = IDE_TFLAG_OUT_LBAH | IDE_TFLAG_OUT_LBAM | - IDE_TFLAG_OUT_FEATURE | tf_flags; - cmd.tf.feature = dma; /* Use PIO/DMA */ - cmd.tf.lbam = bcount & 0xff; - cmd.tf.lbah = (bcount >> 8) & 0xff; - - ide_tf_dump(drive->name, &cmd.tf); - hwif->tp_ops->set_irq(hwif, 1); - SELECT_MASK(drive, 0); - hwif->tp_ops->tf_load(drive, &cmd); + cmd->protocol = dma ? ATAPI_PROT_DMA : ATAPI_PROT_PIO; + cmd->tf_flags |= IDE_TFLAG_OUT_LBAH | IDE_TFLAG_OUT_LBAM | + IDE_TFLAG_OUT_FEATURE | tf_flags; + cmd->tf.feature = dma; /* Use PIO/DMA */ + cmd->tf.lbam = bcount & 0xff; + cmd->tf.lbah = (bcount >> 8) & 0xff; } static u8 ide_read_ireason(ide_drive_t *drive) @@ -634,24 +626,17 @@ static ide_startstop_t ide_transfer_pc(ide_drive_t *drive) return ide_started; } -ide_startstop_t ide_issue_pc(ide_drive_t *drive) +ide_startstop_t ide_issue_pc(ide_drive_t *drive, struct ide_cmd *cmd) { 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); @@ -696,7 +681,9 @@ ide_startstop_t ide_issue_pc(ide_drive_t *drive) : WAIT_TAPE_CMD; } - ide_pktcmd_tf_load(drive, tf_flags, bcount); + ide_init_packet_cmd(cmd, tf_flags, bcount, drive->dma); + + (void)do_rw_taskfile(drive, cmd); /* Issue the packet command */ if (drive->atapi_flags & IDE_AFLAG_DRQ_INTERRUPT) { diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c index 2f698c6e913f..a6c847d31b9d 100644 --- a/drivers/ide/ide-cd.c +++ b/drivers/ide/ide-cd.c @@ -1066,6 +1066,8 @@ static void cdrom_do_block_pc(ide_drive_t *drive, struct request *rq) static ide_startstop_t ide_cd_do_request(ide_drive_t *drive, struct request *rq, sector_t block) { + struct ide_cmd cmd; + ide_debug_log(IDE_DBG_RQ, "cmd: 0x%x, block: %llu", rq->cmd[0], (unsigned long long)block); @@ -1094,7 +1096,14 @@ static ide_startstop_t ide_cd_do_request(ide_drive_t *drive, struct request *rq, return ide_stopped; } - return ide_issue_pc(drive); + memset(&cmd, 0, sizeof(cmd)); + + if (rq_data_dir(rq)) + cmd.tf_flags |= IDE_TFLAG_WRITE; + + cmd.rq = rq; + + return ide_issue_pc(drive, &cmd); } /* diff --git a/drivers/ide/ide-floppy.c b/drivers/ide/ide-floppy.c index ee3e77a7a727..f3ed5de3141b 100644 --- a/drivers/ide/ide-floppy.c +++ b/drivers/ide/ide-floppy.c @@ -130,8 +130,9 @@ static void ide_floppy_report_error(struct ide_disk_obj *floppy, } -static ide_startstop_t idefloppy_issue_pc(ide_drive_t *drive, - struct ide_atapi_pc *pc) +static ide_startstop_t ide_floppy_issue_pc(ide_drive_t *drive, + struct ide_cmd *cmd, + struct ide_atapi_pc *pc) { struct ide_disk_obj *floppy = drive->driver_data; @@ -157,7 +158,7 @@ static ide_startstop_t idefloppy_issue_pc(ide_drive_t *drive, pc->retries++; - return ide_issue_pc(drive); + return ide_issue_pc(drive, cmd); } void ide_floppy_create_read_capacity_cmd(struct ide_atapi_pc *pc) @@ -244,7 +245,7 @@ static ide_startstop_t ide_floppy_do_request(ide_drive_t *drive, { struct ide_disk_obj *floppy = drive->driver_data; ide_hwif_t *hwif = drive->hwif; - struct ide_cmd *cmd = &hwif->cmd; + struct ide_cmd cmd; struct ide_atapi_pc *pc; if (drive->debug_mask & IDE_DBG_RQ) @@ -285,21 +286,24 @@ static ide_startstop_t ide_floppy_do_request(ide_drive_t *drive, goto out_end; } + memset(&cmd, 0, sizeof(cmd)); + if (rq_data_dir(rq)) - cmd->tf_flags |= IDE_TFLAG_WRITE; - cmd->rq = 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, cmd); + ide_init_sg_cmd(&cmd, rq->nr_sectors); + ide_map_sg(drive, &cmd); } pc->sg = hwif->sg_table; - pc->sg_cnt = cmd->sg_nents; + pc->sg_cnt = cmd.sg_nents; pc->rq = rq; - return idefloppy_issue_pc(drive, pc); + return ide_floppy_issue_pc(drive, &cmd, pc); out_end: drive->failed_pc = NULL; if (blk_fs_request(rq) == 0 && rq->errors == 0) diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c index 853d047aa78f..64dfa7458f8d 100644 --- a/drivers/ide/ide-tape.c +++ b/drivers/ide/ide-tape.c @@ -580,7 +580,7 @@ static int ide_tape_io_buffers(ide_drive_t *drive, struct ide_atapi_pc *pc, * * The handling will be done in three stages: * - * 1. idetape_issue_pc will send the packet command to the drive, and will set + * 1. ide_tape_issue_pc will send the packet command to the drive, and will set * the interrupt handler to ide_pc_intr. * * 2. On each interrupt, ide_pc_intr will be called. This step will be @@ -608,8 +608,9 @@ static int ide_tape_io_buffers(ide_drive_t *drive, struct ide_atapi_pc *pc, * request. */ -static ide_startstop_t idetape_issue_pc(ide_drive_t *drive, - struct ide_atapi_pc *pc) +static ide_startstop_t ide_tape_issue_pc(ide_drive_t *drive, + struct ide_cmd *cmd, + struct ide_atapi_pc *pc) { idetape_tape_t *tape = drive->driver_data; @@ -654,7 +655,7 @@ static ide_startstop_t idetape_issue_pc(ide_drive_t *drive, pc->retries++; - return ide_issue_pc(drive); + return ide_issue_pc(drive, cmd); } /* A mode sense command is used to "sense" tape parameters. */ @@ -749,6 +750,7 @@ static ide_startstop_t idetape_do_request(ide_drive_t *drive, idetape_tape_t *tape = drive->driver_data; struct ide_atapi_pc *pc = NULL; struct request *postponed_rq = tape->postponed_rq; + struct ide_cmd cmd; u8 stat; debug_log(DBG_SENSE, "sector: %llu, nr_sectors: %lu," @@ -844,7 +846,14 @@ static ide_startstop_t idetape_do_request(ide_drive_t *drive, BUG(); out: - return idetape_issue_pc(drive, pc); + memset(&cmd, 0, sizeof(cmd)); + + if (rq_data_dir(rq)) + cmd.tf_flags |= IDE_TFLAG_WRITE; + + cmd.rq = rq; + + return ide_tape_issue_pc(drive, &cmd, pc); } /* diff --git a/drivers/ide/ide-taskfile.c b/drivers/ide/ide-taskfile.c index 3b23bd11945e..63ab233ba942 100644 --- a/drivers/ide/ide-taskfile.c +++ b/drivers/ide/ide-taskfile.c @@ -100,13 +100,14 @@ ide_startstop_t do_rw_taskfile(ide_drive_t *drive, struct ide_cmd *orig_cmd) ide_execute_command(drive, tf->command, handler, WAIT_WORSTCASE, NULL); return ide_started; - default: + case ATA_PROT_DMA: if ((drive->dev_flags & IDE_DFLAG_USING_DMA) == 0 || 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); + default: return ide_started; } } diff --git a/include/linux/ide.h b/include/linux/ide.h index b30e79c6ff57..e339d6646552 100644 --- a/include/linux/ide.h +++ b/include/linux/ide.h @@ -1226,7 +1226,7 @@ int ide_cd_expiry(ide_drive_t *); int ide_cd_get_xferlen(struct request *); -ide_startstop_t ide_issue_pc(ide_drive_t *); +ide_startstop_t ide_issue_pc(ide_drive_t *, struct ide_cmd *); ide_startstop_t do_rw_taskfile(ide_drive_t *, struct ide_cmd *); -- 2.20.1