From a792bd5a407872714942f50bf24083874ce03745 Mon Sep 17 00:00:00 2001 From: Harvey Harrison Date: Tue, 15 Jul 2008 21:21:41 +0200 Subject: ide-tape: use clamp_t() rather than nested min_t()/max_t() Signed-off-by: Harvey Harrison Signed-off-by: Andrew Morton Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/ide/ide-tape.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) (limited to 'drivers/ide/ide-tape.c') diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c index 1e1f26331a24..2d822df08658 100644 --- a/drivers/ide/ide-tape.c +++ b/drivers/ide/ide-tape.c @@ -2746,9 +2746,8 @@ static void idetape_setup(ide_drive_t *drive, idetape_tape_t *tape, int minor) * Ensure that the number we got makes sense; limit it within * IDETAPE_DSC_RW_MIN and IDETAPE_DSC_RW_MAX. */ - tape->best_dsc_rw_freq = max_t(unsigned long, - min_t(unsigned long, t, IDETAPE_DSC_RW_MAX), - IDETAPE_DSC_RW_MIN); + tape->best_dsc_rw_freq = clamp_t(unsigned long, t, IDETAPE_DSC_RW_MIN, + IDETAPE_DSC_RW_MAX); printk(KERN_INFO "ide-tape: %s <-> %s: %dKBps, %d*%dkB buffer, " "%lums tDSC%s\n", drive->name, tape->name, *(u16 *)&tape->caps[14], -- cgit v1.2.3 From 5d0cc8ae29b310ceb6516a6840ca22738aab7820 Mon Sep 17 00:00:00 2001 From: Harvey Harrison Date: Tue, 15 Jul 2008 21:21:41 +0200 Subject: ide: use get_unaligned_* helpers Signed-off-by: Harvey Harrison Cc: Andrew Morton Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/ide/ide-tape.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/ide/ide-tape.c') diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c index 2d822df08658..1a96cc503994 100644 --- a/drivers/ide/ide-tape.c +++ b/drivers/ide/ide-tape.c @@ -538,7 +538,7 @@ static void idetape_analyze_error(ide_drive_t *drive, u8 *sense) if (pc->flags & PC_FLAG_DMA_ERROR) { pc->xferred = pc->req_xfer - tape->blk_size * - be32_to_cpu(get_unaligned((u32 *)&sense[3])); + get_unaligned_be32(&sense[3]); idetape_update_buffers(pc); } -- cgit v1.2.3 From e8a96aa71355edef9f40ce01459acf25c50cb78c Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Tue, 15 Jul 2008 21:21:41 +0200 Subject: ide: set REQ_PREEMPT request flag in ide_do_drive_cmd() users * Set REQ_PREEMPT request flag in ide_do_drive_cmd() users for ide_preempt and ide_head_wait action types. * Remove setting REQ_PREEMPT from ide_do_drive_cmd(). While at it: * Set 'where' variable outside ide_lock. This is a preparation for converting IDE to use blk_execute_rq(). There should be no functional changes caused by this patch. Cc: FUJITA Tomonori Cc: Borislav Petkov Cc: Jens Axboe Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/ide/ide-tape.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/ide/ide-tape.c') diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c index 1a96cc503994..d67a17891786 100644 --- a/drivers/ide/ide-tape.c +++ b/drivers/ide/ide-tape.c @@ -688,6 +688,7 @@ static void idetape_queue_pc_head(ide_drive_t *drive, struct ide_atapi_pc *pc, struct ide_tape_obj *tape = drive->driver_data; idetape_init_rq(rq, REQ_IDETAPE_PC1); + rq->cmd_flags |= REQ_PREEMPT; rq->buffer = (char *) pc; rq->rq_disk = tape->disk; (void) ide_do_drive_cmd(drive, rq, ide_preempt); -- cgit v1.2.3 From 64ea1b4ab7f51c5de601d291a51508c27d445f70 Mon Sep 17 00:00:00 2001 From: FUJITA Tomonori Date: Tue, 15 Jul 2008 21:21:43 +0200 Subject: ide-tape: convert ide_do_drive_cmd path to use blk_execute_rq This converts the ide_do_drive_cmd path using ide_wait to use blk_execute_rq. Signed-off-by: FUJITA Tomonori Cc: Borislav Petkov Cc: Jens Axboe Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/ide/ide-tape.c | 41 ++++++++++++++++++++++++++--------------- 1 file changed, 26 insertions(+), 15 deletions(-) (limited to 'drivers/ide/ide-tape.c') diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c index d67a17891786..a5f0b774527b 100644 --- a/drivers/ide/ide-tape.c +++ b/drivers/ide/ide-tape.c @@ -1519,12 +1519,16 @@ static void idetape_create_test_unit_ready_cmd(struct ide_atapi_pc *pc) static int idetape_queue_pc_tail(ide_drive_t *drive, struct ide_atapi_pc *pc) { struct ide_tape_obj *tape = drive->driver_data; - struct request rq; + struct request *rq; + int error; - idetape_init_rq(&rq, REQ_IDETAPE_PC1); - rq.buffer = (char *) pc; - rq.rq_disk = tape->disk; - return ide_do_drive_cmd(drive, &rq, ide_wait); + rq = blk_get_request(drive->queue, READ, __GFP_WAIT); + rq->cmd_type = REQ_TYPE_SPECIAL; + rq->cmd[0] = REQ_IDETAPE_PC1; + rq->buffer = (char *)pc; + error = blk_execute_rq(drive->queue, tape->disk, rq, 0); + blk_put_request(rq); + return error; } static void idetape_create_load_unload_cmd(ide_drive_t *drive, @@ -1701,26 +1705,33 @@ static int idetape_queue_rw_tail(ide_drive_t *drive, int cmd, int blocks, struct idetape_bh *bh) { idetape_tape_t *tape = drive->driver_data; - struct request rq; + struct request *rq; + int ret, errors; debug_log(DBG_SENSE, "%s: cmd=%d\n", __func__, cmd); - idetape_init_rq(&rq, cmd); - rq.rq_disk = tape->disk; - rq.special = (void *)bh; - rq.sector = tape->first_frame; - rq.nr_sectors = blocks; - rq.current_nr_sectors = blocks; - (void) ide_do_drive_cmd(drive, &rq, ide_wait); + rq = blk_get_request(drive->queue, READ, __GFP_WAIT); + rq->cmd_type = REQ_TYPE_SPECIAL; + rq->cmd[0] = cmd; + rq->rq_disk = tape->disk; + rq->special = (void *)bh; + rq->sector = tape->first_frame; + rq->nr_sectors = blocks; + rq->current_nr_sectors = blocks; + blk_execute_rq(drive->queue, tape->disk, rq, 0); + + errors = rq->errors; + ret = tape->blk_size * (blocks - rq->current_nr_sectors); + blk_put_request(rq); if ((cmd & (REQ_IDETAPE_READ | REQ_IDETAPE_WRITE)) == 0) return 0; if (tape->merge_bh) idetape_init_merge_buffer(tape); - if (rq.errors == IDETAPE_ERROR_GENERAL) + if (errors == IDETAPE_ERROR_GENERAL) return -EIO; - return (tape->blk_size * (blocks-rq.current_nr_sectors)); + return ret; } static void idetape_create_inquiry_cmd(struct ide_atapi_pc *pc) -- cgit v1.2.3 From 9a410e79b552bacb4481f85618aa7333b7776ed7 Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Tue, 15 Jul 2008 21:21:48 +0200 Subject: ide: remove IDE_TFLAG_NO_SELECT_MASK taskfile flag Always call SELECT_MASK(..., 0) in ide_tf_load() (needs to be done to match ide_set_irq(..., 1)) and then remove IDE_TFLAG_NO_SELECT_MASK taskfile flag. This change should only affect hpt366 and icside host drivers since ->maskproc(..., 0) for sgiioc4 is equivalent to ide_set_irq(..., 1). Cc: Sergei Shtylyov Cc: Russell King Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/ide/ide-tape.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'drivers/ide/ide-tape.c') diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c index a5f0b774527b..cc7991c7c252 100644 --- a/drivers/ide/ide-tape.c +++ b/drivers/ide/ide-tape.c @@ -1046,8 +1046,7 @@ static ide_startstop_t idetape_issue_pc(ide_drive_t *drive, if ((pc->flags & PC_FLAG_DMA_RECOMMENDED) && drive->using_dma) dma_ok = !hwif->dma_ops->dma_setup(drive); - ide_pktcmd_tf_load(drive, IDE_TFLAG_NO_SELECT_MASK | - IDE_TFLAG_OUT_DEVICE, bcount, dma_ok); + ide_pktcmd_tf_load(drive, IDE_TFLAG_OUT_DEVICE, bcount, dma_ok); if (dma_ok) /* Will begin DMA later */ -- cgit v1.2.3 From 63f5abb0959337db0d5bece9cefba03cdcadec51 Mon Sep 17 00:00:00 2001 From: FUJITA Tomonori Date: Tue, 15 Jul 2008 21:21:51 +0200 Subject: ide: remove action argument in ide_do_drive_cmd ide_do_drive_cmd is called only with ide_preempt action argument. So we can remove the action argument in ide_do_drive_cmd and ide_action_t typedef. This patch also includes two minor cleanups: 1) ide_do_drive_cmd always succeeds so we don't need the return value; 2) the callers use blk_rq_init before ide_do_drive_cmd so there is no need to initialize rq->errors. Signed-off-by: FUJITA Tomonori Cc: Borislav Petkov Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/ide/ide-tape.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/ide/ide-tape.c') diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c index cc7991c7c252..a562df820777 100644 --- a/drivers/ide/ide-tape.c +++ b/drivers/ide/ide-tape.c @@ -691,7 +691,7 @@ static void idetape_queue_pc_head(ide_drive_t *drive, struct ide_atapi_pc *pc, rq->cmd_flags |= REQ_PREEMPT; rq->buffer = (char *) pc; rq->rq_disk = tape->disk; - (void) ide_do_drive_cmd(drive, rq, ide_preempt); + ide_do_drive_cmd(drive, rq); } /* -- cgit v1.2.3 From 87429bdc2e0701fa33a455297de01e79797b4210 Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Tue, 15 Jul 2008 21:21:53 +0200 Subject: ide-tape: idetape_pc_intr() should use local_irq_enable_in_hardirq() Cc: Borislav Petkov Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/ide/ide-tape.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/ide/ide-tape.c') diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c index a562df820777..58c5a5a98858 100644 --- a/drivers/ide/ide-tape.c +++ b/drivers/ide/ide-tape.c @@ -794,7 +794,7 @@ static ide_startstop_t idetape_pc_intr(ide_drive_t *drive) " transferred\n", pc->xferred); pc->flags &= ~PC_FLAG_DMA_IN_PROGRESS; - local_irq_enable(); + local_irq_enable_in_hardirq(); #if SIMULATE_ERRORS if ((pc->c[0] == WRITE_6 || pc->c[0] == READ_6) && -- cgit v1.2.3 From 1e049a8ea190b7cc22320c7797b36b2c6128c9c5 Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Tue, 15 Jul 2008 21:21:53 +0200 Subject: ide-tape: remove superfluous error message from idetape_pc_intr() ide_dma_off() prints info about DMA being disabled. Cc: Borislav Petkov Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/ide/ide-tape.c | 1 - 1 file changed, 1 deletion(-) (limited to 'drivers/ide/ide-tape.c') diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c index 58c5a5a98858..92fadd5a5f8a 100644 --- a/drivers/ide/ide-tape.c +++ b/drivers/ide/ide-tape.c @@ -842,7 +842,6 @@ static ide_startstop_t idetape_pc_intr(ide_drive_t *drive) pc->flags &= ~PC_FLAG_DMA_IN_PROGRESS; printk(KERN_ERR "ide-tape: The tape wants to issue more " "interrupts in DMA mode\n"); - printk(KERN_ERR "ide-tape: DMA disabled, reverting to PIO\n"); ide_dma_off(drive); return ide_do_reset(drive); } -- cgit v1.2.3 From 6bd3b0bfb8fccdcce3b8524d6761e0a3ab6e23f0 Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Tue, 15 Jul 2008 21:21:53 +0200 Subject: ide-tape: remove superfluous warning message from idetape_issue_pc() ide_dma_off() prints info about DMA being disabled. Cc: Borislav Petkov Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/ide/ide-tape.c | 2 -- 1 file changed, 2 deletions(-) (limited to 'drivers/ide/ide-tape.c') diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c index 92fadd5a5f8a..5aa7e2dbaa0c 100644 --- a/drivers/ide/ide-tape.c +++ b/drivers/ide/ide-tape.c @@ -1038,8 +1038,6 @@ static ide_startstop_t idetape_issue_pc(ide_drive_t *drive, if (pc->flags & PC_FLAG_DMA_ERROR) { pc->flags &= ~PC_FLAG_DMA_ERROR; - printk(KERN_WARNING "ide-tape: DMA disabled, " - "reverting to PIO\n"); ide_dma_off(drive); } if ((pc->flags & PC_FLAG_DMA_RECOMMENDED) && drive->using_dma) -- cgit v1.2.3 From 91395a16309596c2e78439aa5f9f6004f0365ef9 Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Tue, 15 Jul 2008 21:21:54 +0200 Subject: ide-tape: remove unneeded CONFIG_BLK_DEV_IDEDMA ifdef PC_FLAG_DMA_IN_PROGRESS flag is never set if DMA support is disabled. Cc: Borislav Petkov Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/ide/ide-tape.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/ide/ide-tape.c') diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c index 5aa7e2dbaa0c..b8cc0d5cde0e 100644 --- a/drivers/ide/ide-tape.c +++ b/drivers/ide/ide-tape.c @@ -973,11 +973,11 @@ static ide_startstop_t idetape_transfer_pc(ide_drive_t *drive) } /* Set the interrupt routine */ ide_set_handler(drive, &idetape_pc_intr, IDETAPE_WAIT_CMD, NULL); -#ifdef CONFIG_BLK_DEV_IDEDMA + /* Begin DMA, if necessary */ if (pc->flags & PC_FLAG_DMA_IN_PROGRESS) hwif->dma_ops->dma_start(drive); -#endif + /* Send the actual packet */ hwif->output_data(drive, NULL, pc->c, 12); -- cgit v1.2.3 From 531e9e50543ebf562237b8ac64529ae09b344a43 Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Tue, 15 Jul 2008 21:21:54 +0200 Subject: ide-tape: remove stale comments from idetape_pc_intr() Cc: Borislav Petkov Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/ide/ide-tape.c | 21 --------------------- 1 file changed, 21 deletions(-) (limited to 'drivers/ide/ide-tape.c') diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c index b8cc0d5cde0e..41aa8b3ccab3 100644 --- a/drivers/ide/ide-tape.c +++ b/drivers/ide/ide-tape.c @@ -758,27 +758,6 @@ static ide_startstop_t idetape_pc_intr(ide_drive_t *drive) if (pc->flags & PC_FLAG_DMA_IN_PROGRESS) { if (hwif->dma_ops->dma_end(drive) || (stat & ERR_STAT)) { - /* - * A DMA error is sometimes expected. For example, - * if the tape is crossing a filemark during a - * READ command, it will issue an irq and position - * itself before the filemark, so that only a partial - * data transfer will occur (which causes the DMA - * error). In that case, we will later ask the tape - * how much bytes of the original request were - * actually transferred (we can't receive that - * information from the DMA engine on most chipsets). - */ - - /* - * On the contrary, a DMA error is never expected; - * it usually indicates a hardware error or abort. - * If the tape crosses a filemark during a READ - * command, it will issue an irq and position itself - * after the filemark (not before). Only a partial - * data transfer will occur, but no DMA error. - * (AS, 19 Apr 2001) - */ pc->flags |= PC_FLAG_DMA_ERROR; } else { pc->xferred = pc->req_xfer; -- cgit v1.2.3 From 170ee569bbe1005baebf2e9e4c3f4622d14ec851 Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Tue, 15 Jul 2008 21:21:54 +0200 Subject: ide-tape: remove SIMULATE_ERRORS debug code Cc: Borislav Petkov Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/ide/ide-tape.c | 14 -------------- 1 file changed, 14 deletions(-) (limited to 'drivers/ide/ide-tape.c') diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c index 41aa8b3ccab3..cc70e759fc8e 100644 --- a/drivers/ide/ide-tape.c +++ b/drivers/ide/ide-tape.c @@ -144,9 +144,6 @@ enum { /*************************** End of tunable parameters ***********************/ -/* Read/Write error simulation */ -#define SIMULATE_ERRORS 0 - /* tape directions */ enum { IDETAPE_DIR_NONE = (1 << 0), @@ -745,9 +742,6 @@ static ide_startstop_t idetape_pc_intr(ide_drive_t *drive) xfer_func_t *xferfunc; idetape_io_buf *iobuf; unsigned int temp; -#if SIMULATE_ERRORS - static int error_sim_count; -#endif u16 bcount; u8 stat, ireason; @@ -775,14 +769,6 @@ static ide_startstop_t idetape_pc_intr(ide_drive_t *drive) pc->flags &= ~PC_FLAG_DMA_IN_PROGRESS; local_irq_enable_in_hardirq(); -#if SIMULATE_ERRORS - if ((pc->c[0] == WRITE_6 || pc->c[0] == READ_6) && - (++error_sim_count % 100) == 0) { - printk(KERN_INFO "ide-tape: %s: simulating error\n", - tape->name); - stat |= ERR_STAT; - } -#endif if ((stat & ERR_STAT) && pc->c[0] == REQUEST_SENSE) stat &= ~ERR_STAT; if ((stat & ERR_STAT) || (pc->flags & PC_FLAG_DMA_ERROR)) { -- cgit v1.2.3 From 568ca92774d2f6be4a7e2f8357559bfdc9424056 Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Tue, 15 Jul 2008 21:21:54 +0200 Subject: ide-{floppy,tape,scsi}: log device name instead of driver name Log device name instead of driver name in *_pc_intr() and *_transfer_pc*(). While at it: * Merge two consecutive printk()-s in *_pc_intr() together. * Replace "floppy"/"tape"/"scsi" references in printk()-s by "device". Cc: Borislav Petkov Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/ide/ide-tape.c | 42 ++++++++++++++++++++++-------------------- 1 file changed, 22 insertions(+), 20 deletions(-) (limited to 'drivers/ide/ide-tape.c') diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c index cc70e759fc8e..8f10211c2b08 100644 --- a/drivers/ide/ide-tape.c +++ b/drivers/ide/ide-tape.c @@ -776,8 +776,8 @@ static ide_startstop_t idetape_pc_intr(ide_drive_t *drive) debug_log(DBG_ERR, "%s: I/O error\n", tape->name); if (pc->c[0] == REQUEST_SENSE) { - printk(KERN_ERR "ide-tape: I/O error in request" - " sense command\n"); + printk(KERN_ERR "%s: I/O error in request sense" + " command\n", drive->name); return ide_do_reset(drive); } debug_log(DBG_ERR, "[cmd %x]: check condition\n", @@ -805,8 +805,8 @@ static ide_startstop_t idetape_pc_intr(ide_drive_t *drive) if (pc->flags & PC_FLAG_DMA_IN_PROGRESS) { pc->flags &= ~PC_FLAG_DMA_IN_PROGRESS; - printk(KERN_ERR "ide-tape: The tape wants to issue more " - "interrupts in DMA mode\n"); + printk(KERN_ERR "%s: The device wants to issue more interrupts " + "in DMA mode\n", drive->name); ide_dma_off(drive); return ide_do_reset(drive); } @@ -817,14 +817,14 @@ static ide_startstop_t idetape_pc_intr(ide_drive_t *drive) ireason = hwif->INB(hwif->io_ports.nsect_addr); if (ireason & CD) { - printk(KERN_ERR "ide-tape: CoD != 0 in %s\n", __func__); + printk(KERN_ERR "%s: CoD != 0 in %s\n", drive->name, __func__); return ide_do_reset(drive); } if (((ireason & IO) == IO) == !!(pc->flags & PC_FLAG_WRITING)) { /* Hopefully, we will never get here */ - printk(KERN_ERR "ide-tape: We wanted to %s, ", - (ireason & IO) ? "Write" : "Read"); - printk(KERN_ERR "ide-tape: but the tape wants us to %s !\n", + printk(KERN_ERR "%s: We wanted to %s, but the device wants us " + "to %s!\n", drive->name, + (ireason & IO) ? "Write" : "Read", (ireason & IO) ? "Read" : "Write"); return ide_do_reset(drive); } @@ -833,15 +833,16 @@ static ide_startstop_t idetape_pc_intr(ide_drive_t *drive) temp = pc->xferred + bcount; if (temp > pc->req_xfer) { if (temp > pc->buf_size) { - printk(KERN_ERR "ide-tape: The tape wants to " - "send us more data than expected " - "- discarding data\n"); + printk(KERN_ERR "%s: The device wants to send " + "us more data than expected - " + "discarding data\n", + drive->name); ide_pad_transfer(drive, 0, bcount); ide_set_handler(drive, &idetape_pc_intr, IDETAPE_WAIT_CMD, NULL); return ide_started; } - debug_log(DBG_SENSE, "The tape wants to send us more " + debug_log(DBG_SENSE, "The device wants to send us more " "data than expected - allowing transfer\n"); } iobuf = &idetape_input_buffers; @@ -914,26 +915,27 @@ static ide_startstop_t idetape_transfer_pc(ide_drive_t *drive) u8 ireason; if (ide_wait_stat(&startstop, drive, DRQ_STAT, BUSY_STAT, WAIT_READY)) { - printk(KERN_ERR "ide-tape: Strange, packet command initiated " - "yet DRQ isn't asserted\n"); + printk(KERN_ERR "%s: Strange, packet command initiated yet " + "DRQ isn't asserted\n", drive->name); return startstop; } ireason = hwif->INB(hwif->io_ports.nsect_addr); while (retries-- && ((ireason & CD) == 0 || (ireason & IO))) { - printk(KERN_ERR "ide-tape: (IO,CoD != (0,1) while issuing " - "a packet command, retrying\n"); + printk(KERN_ERR "%s: (IO,CoD != (0,1) while issuing " + "a packet command, retrying\n", drive->name); udelay(100); ireason = hwif->INB(hwif->io_ports.nsect_addr); if (retries == 0) { - printk(KERN_ERR "ide-tape: (IO,CoD != (0,1) while " - "issuing a packet command, ignoring\n"); + printk(KERN_ERR "%s: (IO,CoD != (0,1) while issuing " + "a packet command, ignoring\n", + drive->name); ireason |= CD; ireason &= ~IO; } } if ((ireason & CD) == 0 || (ireason & IO)) { - printk(KERN_ERR "ide-tape: (IO,CoD) != (0,1) while issuing " - "a packet command\n"); + printk(KERN_ERR "%s: (IO,CoD) != (0,1) while issuing " + "a packet command\n", drive->name); return ide_do_reset(drive); } /* Set the interrupt routine */ -- cgit v1.2.3 From 258ec4113081c2b63117dc2df6d94c3e484e9747 Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Tue, 15 Jul 2008 21:21:55 +0200 Subject: ide-tape: make idetape_retry_pc() void idetape_retry_pc() always returns ide_stopped so make it void. There should be no functional changes caused by this patch. Cc: Borislav Petkov Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/ide/ide-tape.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) (limited to 'drivers/ide/ide-tape.c') diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c index 8f10211c2b08..48fccf154f68 100644 --- a/drivers/ide/ide-tape.c +++ b/drivers/ide/ide-tape.c @@ -696,7 +696,7 @@ static void idetape_queue_pc_head(ide_drive_t *drive, struct ide_atapi_pc *pc, * last packet command. We queue a request sense packet command in * the head of the request list. */ -static ide_startstop_t idetape_retry_pc (ide_drive_t *drive) +static void idetape_retry_pc(ide_drive_t *drive) { idetape_tape_t *tape = drive->driver_data; struct ide_atapi_pc *pc; @@ -708,7 +708,6 @@ static ide_startstop_t idetape_retry_pc (ide_drive_t *drive) idetape_create_request_sense_cmd(pc); set_bit(IDETAPE_FLAG_IGNORE_DSC, &tape->flags); idetape_queue_pc_head(drive, pc, rq); - return ide_stopped; } /* @@ -784,7 +783,8 @@ static ide_startstop_t idetape_pc_intr(ide_drive_t *drive) pc->c[0]); /* Retry operation */ - return idetape_retry_pc(drive); + idetape_retry_pc(drive); + return ide_stopped; } pc->error = 0; if ((pc->flags & PC_FLAG_WAIT_FOR_DSC) && @@ -1078,7 +1078,8 @@ static ide_startstop_t idetape_media_access_finished(ide_drive_t *drive) printk(KERN_ERR "ide-tape: %s: I/O error, ", tape->name); /* Retry operation */ - return idetape_retry_pc(drive); + idetape_retry_pc(drive); + return ide_stopped; } pc->error = 0; if (tape->failed_pc == pc) -- cgit v1.2.3 From 5985e6abbd89f969c17fd80ab864c80f089827a3 Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Tue, 15 Jul 2008 21:21:55 +0200 Subject: ide-tape: merge callbacks The appropriate functionality of the callback is established through querying the ATAPI packet command in pc->c[0]. While at it: - add uptodate variable + leave just one idetape_end_request() call - don't use HWGROUP() macro Cc: Borislav Petkov Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/ide/ide-tape.c | 168 +++++++++++++++++++------------------------------ 1 file changed, 64 insertions(+), 104 deletions(-) (limited to 'drivers/ide/ide-tape.c') diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c index 48fccf154f68..d387aaf0eb39 100644 --- a/drivers/ide/ide-tape.c +++ b/drivers/ide/ide-tape.c @@ -503,18 +503,6 @@ static struct request *idetape_next_rq_storage(ide_drive_t *drive) return (&tape->rq_stack[tape->rq_stack_index++]); } -static void idetape_init_pc(struct ide_atapi_pc *pc) -{ - memset(pc->c, 0, 12); - pc->retries = 0; - pc->flags = 0; - pc->req_xfer = 0; - pc->buf = pc->pc_buf; - pc->buf_size = IDETAPE_PC_BUFFER_SIZE; - pc->bh = NULL; - pc->b_data = NULL; -} - /* * called on each failed packet command retry to analyze the request sense. We * currently do not utilize this information. @@ -631,30 +619,85 @@ static int idetape_end_request(ide_drive_t *drive, int uptodate, int nr_sects) return 0; } -static ide_startstop_t idetape_request_sense_callback(ide_drive_t *drive) +static ide_startstop_t ide_tape_callback(ide_drive_t *drive) { idetape_tape_t *tape = drive->driver_data; + struct ide_atapi_pc *pc = tape->pc; + int uptodate = pc->error ? 0 : 1; debug_log(DBG_PROCS, "Enter %s\n", __func__); - if (!tape->pc->error) { - idetape_analyze_error(drive, tape->pc->buf); - idetape_end_request(drive, 1, 0); - } else { - printk(KERN_ERR "ide-tape: Error in REQUEST SENSE itself - " - "Aborting request!\n"); - idetape_end_request(drive, 0, 0); + if (pc->c[0] == REQUEST_SENSE) { + if (uptodate) + idetape_analyze_error(drive, pc->buf); + else + printk(KERN_ERR "ide-tape: Error in REQUEST SENSE " + "itself - Aborting request!\n"); + } else if (pc->c[0] == READ_6 || pc->c[0] == WRITE_6) { + struct request *rq = drive->hwif->hwgroup->rq; + int blocks = pc->xferred / tape->blk_size; + + tape->avg_size += blocks * tape->blk_size; + + if (time_after_eq(jiffies, tape->avg_time + HZ)) { + tape->avg_speed = tape->avg_size * HZ / + (jiffies - tape->avg_time) / 1024; + tape->avg_size = 0; + tape->avg_time = jiffies; + } + + tape->first_frame += blocks; + rq->current_nr_sectors -= blocks; + + if (pc->error) + uptodate = pc->error; + } else if (pc->c[0] == READ_POSITION && uptodate) { + u8 *readpos = tape->pc->buf; + + debug_log(DBG_SENSE, "BOP - %s\n", + (readpos[0] & 0x80) ? "Yes" : "No"); + debug_log(DBG_SENSE, "EOP - %s\n", + (readpos[0] & 0x40) ? "Yes" : "No"); + + if (readpos[0] & 0x4) { + printk(KERN_INFO "ide-tape: Block location is unknown" + "to the tape\n"); + clear_bit(IDETAPE_FLAG_ADDRESS_VALID, &tape->flags); + uptodate = 0; + } else { + debug_log(DBG_SENSE, "Block Location - %u\n", + be32_to_cpu(*(u32 *)&readpos[4])); + + tape->partition = readpos[1]; + tape->first_frame = be32_to_cpu(*(u32 *)&readpos[4]); + set_bit(IDETAPE_FLAG_ADDRESS_VALID, &tape->flags); + } } + + idetape_end_request(drive, uptodate, 0); + return ide_stopped; } +static void idetape_init_pc(struct ide_atapi_pc *pc) +{ + memset(pc->c, 0, 12); + pc->retries = 0; + pc->flags = 0; + pc->req_xfer = 0; + pc->buf = pc->pc_buf; + pc->buf_size = IDETAPE_PC_BUFFER_SIZE; + pc->bh = NULL; + pc->b_data = NULL; + pc->idetape_callback = ide_tape_callback; +} + static void idetape_create_request_sense_cmd(struct ide_atapi_pc *pc) { idetape_init_pc(pc); pc->c[0] = REQUEST_SENSE; pc->c[4] = 20; pc->req_xfer = 20; - pc->idetape_callback = &idetape_request_sense_callback; } static void idetape_init_rq(struct request *rq, u8 cmd) @@ -1025,16 +1068,6 @@ static ide_startstop_t idetape_issue_pc(ide_drive_t *drive, } } -static ide_startstop_t idetape_pc_callback(ide_drive_t *drive) -{ - idetape_tape_t *tape = drive->driver_data; - - debug_log(DBG_PROCS, "Enter %s\n", __func__); - - idetape_end_request(drive, tape->pc->error ? 0 : 1, 0); - return ide_stopped; -} - /* A mode sense command is used to "sense" tape parameters. */ static void idetape_create_mode_sense_cmd(struct ide_atapi_pc *pc, u8 page_code) { @@ -1060,7 +1093,6 @@ static void idetape_create_mode_sense_cmd(struct ide_atapi_pc *pc, u8 page_code) pc->req_xfer = 24; else pc->req_xfer = 50; - pc->idetape_callback = &idetape_pc_callback; } static ide_startstop_t idetape_media_access_finished(ide_drive_t *drive) @@ -1091,32 +1123,6 @@ static ide_startstop_t idetape_media_access_finished(ide_drive_t *drive) return pc->idetape_callback(drive); } -static ide_startstop_t idetape_rw_callback(ide_drive_t *drive) -{ - idetape_tape_t *tape = drive->driver_data; - struct request *rq = HWGROUP(drive)->rq; - int blocks = tape->pc->xferred / tape->blk_size; - - tape->avg_size += blocks * tape->blk_size; - - if (time_after_eq(jiffies, tape->avg_time + HZ)) { - tape->avg_speed = tape->avg_size * HZ / - (jiffies - tape->avg_time) / 1024; - tape->avg_size = 0; - tape->avg_time = jiffies; - } - debug_log(DBG_PROCS, "Enter %s\n", __func__); - - tape->first_frame += blocks; - rq->current_nr_sectors -= blocks; - - if (!tape->pc->error) - idetape_end_request(drive, 1, 0); - else - idetape_end_request(drive, tape->pc->error, 0); - return ide_stopped; -} - static void idetape_create_read_cmd(idetape_tape_t *tape, struct ide_atapi_pc *pc, unsigned int length, struct idetape_bh *bh) @@ -1125,7 +1131,6 @@ static void idetape_create_read_cmd(idetape_tape_t *tape, pc->c[0] = READ_6; put_unaligned(cpu_to_be32(length), (unsigned int *) &pc->c[1]); pc->c[1] = 1; - pc->idetape_callback = &idetape_rw_callback; pc->bh = bh; atomic_set(&bh->b_count, 0); pc->buf = NULL; @@ -1143,7 +1148,6 @@ static void idetape_create_write_cmd(idetape_tape_t *tape, pc->c[0] = WRITE_6; put_unaligned(cpu_to_be32(length), (unsigned int *) &pc->c[1]); pc->c[1] = 1; - pc->idetape_callback = &idetape_rw_callback; pc->flags |= PC_FLAG_WRITING; pc->bh = bh; pc->b_data = bh->b_data; @@ -1412,40 +1416,6 @@ static void idetape_init_merge_buffer(idetape_tape_t *tape) } } -static ide_startstop_t idetape_read_position_callback(ide_drive_t *drive) -{ - idetape_tape_t *tape = drive->driver_data; - u8 *readpos = tape->pc->buf; - - debug_log(DBG_PROCS, "Enter %s\n", __func__); - - if (!tape->pc->error) { - debug_log(DBG_SENSE, "BOP - %s\n", - (readpos[0] & 0x80) ? "Yes" : "No"); - debug_log(DBG_SENSE, "EOP - %s\n", - (readpos[0] & 0x40) ? "Yes" : "No"); - - if (readpos[0] & 0x4) { - printk(KERN_INFO "ide-tape: Block location is unknown" - "to the tape\n"); - clear_bit(IDETAPE_FLAG_ADDRESS_VALID, &tape->flags); - idetape_end_request(drive, 0, 0); - } else { - debug_log(DBG_SENSE, "Block Location - %u\n", - be32_to_cpu(*(u32 *)&readpos[4])); - - tape->partition = readpos[1]; - tape->first_frame = - be32_to_cpu(*(u32 *)&readpos[4]); - set_bit(IDETAPE_FLAG_ADDRESS_VALID, &tape->flags); - idetape_end_request(drive, 1, 0); - } - } else { - idetape_end_request(drive, 0, 0); - } - return ide_stopped; -} - /* * Write a filemark if write_filemark=1. Flush the device buffers without * writing a filemark otherwise. @@ -1457,14 +1427,12 @@ static void idetape_create_write_filemark_cmd(ide_drive_t *drive, pc->c[0] = WRITE_FILEMARKS; pc->c[4] = write_filemark; pc->flags |= PC_FLAG_WAIT_FOR_DSC; - pc->idetape_callback = &idetape_pc_callback; } static void idetape_create_test_unit_ready_cmd(struct ide_atapi_pc *pc) { idetape_init_pc(pc); pc->c[0] = TEST_UNIT_READY; - pc->idetape_callback = &idetape_pc_callback; } /* @@ -1502,7 +1470,6 @@ static void idetape_create_load_unload_cmd(ide_drive_t *drive, pc->c[0] = START_STOP; pc->c[4] = cmd; pc->flags |= PC_FLAG_WAIT_FOR_DSC; - pc->idetape_callback = &idetape_pc_callback; } static int idetape_wait_ready(ide_drive_t *drive, unsigned long timeout) @@ -1554,7 +1521,6 @@ static void idetape_create_read_position_cmd(struct ide_atapi_pc *pc) idetape_init_pc(pc); pc->c[0] = READ_POSITION; pc->req_xfer = 20; - pc->idetape_callback = &idetape_read_position_callback; } static int idetape_read_position(ide_drive_t *drive) @@ -1582,7 +1548,6 @@ static void idetape_create_locate_cmd(ide_drive_t *drive, put_unaligned(cpu_to_be32(block), (unsigned int *) &pc->c[3]); pc->c[8] = partition; pc->flags |= PC_FLAG_WAIT_FOR_DSC; - pc->idetape_callback = &idetape_pc_callback; } static int idetape_create_prevent_cmd(ide_drive_t *drive, @@ -1597,7 +1562,6 @@ static int idetape_create_prevent_cmd(ide_drive_t *drive, idetape_init_pc(pc); pc->c[0] = ALLOW_MEDIUM_REMOVAL; pc->c[4] = prevent; - pc->idetape_callback = &idetape_pc_callback; return 1; } @@ -1704,7 +1668,6 @@ static void idetape_create_inquiry_cmd(struct ide_atapi_pc *pc) pc->c[0] = INQUIRY; pc->c[4] = 254; pc->req_xfer = 254; - pc->idetape_callback = &idetape_pc_callback; } static void idetape_create_rewind_cmd(ide_drive_t *drive, @@ -1713,7 +1676,6 @@ static void idetape_create_rewind_cmd(ide_drive_t *drive, idetape_init_pc(pc); pc->c[0] = REZERO_UNIT; pc->flags |= PC_FLAG_WAIT_FOR_DSC; - pc->idetape_callback = &idetape_pc_callback; } static void idetape_create_erase_cmd(struct ide_atapi_pc *pc) @@ -1722,7 +1684,6 @@ static void idetape_create_erase_cmd(struct ide_atapi_pc *pc) pc->c[0] = ERASE; pc->c[1] = 1; pc->flags |= PC_FLAG_WAIT_FOR_DSC; - pc->idetape_callback = &idetape_pc_callback; } static void idetape_create_space_cmd(struct ide_atapi_pc *pc, int count, u8 cmd) @@ -1732,7 +1693,6 @@ static void idetape_create_space_cmd(struct ide_atapi_pc *pc, int count, u8 cmd) put_unaligned(cpu_to_be32(count), (unsigned int *) &pc->c[1]); pc->c[1] = cmd; pc->flags |= PC_FLAG_WAIT_FOR_DSC; - pc->idetape_callback = &idetape_pc_callback; } /* Queue up a character device originated write request. */ -- cgit v1.2.3 From 92f5daff2b8439fa4c57c57f47823ffc459c3bd9 Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Tue, 15 Jul 2008 21:21:55 +0200 Subject: ide-tape: make pc->idetape_callback void There should be no functional changes caused by this patch. Cc: Borislav Petkov Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/ide/ide-tape.c | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) (limited to 'drivers/ide/ide-tape.c') diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c index d387aaf0eb39..88d26efdf844 100644 --- a/drivers/ide/ide-tape.c +++ b/drivers/ide/ide-tape.c @@ -619,7 +619,7 @@ static int idetape_end_request(ide_drive_t *drive, int uptodate, int nr_sects) return 0; } -static ide_startstop_t ide_tape_callback(ide_drive_t *drive) +static void ide_tape_callback(ide_drive_t *drive) { idetape_tape_t *tape = drive->driver_data; struct ide_atapi_pc *pc = tape->pc; @@ -675,8 +675,6 @@ static ide_startstop_t ide_tape_callback(ide_drive_t *drive) } idetape_end_request(drive, uptodate, 0); - - return ide_stopped; } static void idetape_init_pc(struct ide_atapi_pc *pc) @@ -843,7 +841,8 @@ static ide_startstop_t idetape_pc_intr(ide_drive_t *drive) if (tape->failed_pc == pc) tape->failed_pc = NULL; /* Command finished - Call the callback function */ - return pc->idetape_callback(drive); + pc->idetape_callback(drive); + return ide_stopped; } if (pc->flags & PC_FLAG_DMA_IN_PROGRESS) { @@ -1035,7 +1034,8 @@ static ide_startstop_t idetape_issue_pc(ide_drive_t *drive, pc->error = IDETAPE_ERROR_GENERAL; } tape->failed_pc = NULL; - return pc->idetape_callback(drive); + pc->idetape_callback(drive); + return ide_stopped; } debug_log(DBG_SENSE, "Retry #%d, cmd = %02X\n", pc->retries, pc->c[0]); @@ -1120,7 +1120,8 @@ static ide_startstop_t idetape_media_access_finished(ide_drive_t *drive) pc->error = IDETAPE_ERROR_GENERAL; tape->failed_pc = NULL; } - return pc->idetape_callback(drive); + pc->idetape_callback(drive); + return ide_stopped; } static void idetape_create_read_cmd(idetape_tape_t *tape, -- cgit v1.2.3 From 1b06e92aa03018e4b3ba281e03a7711d9b71a998 Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Tue, 15 Jul 2008 21:21:56 +0200 Subject: ide-{floppy,tape}: merge pc->idefloppy_callback and pc->idetape_callback Merge pc->idefloppy_callback and pc->idetape_callback into pc->callback. There should be no functional changes caused by this patch. Cc: Borislav Petkov Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/ide/ide-tape.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'drivers/ide/ide-tape.c') diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c index 88d26efdf844..ce9b6d327528 100644 --- a/drivers/ide/ide-tape.c +++ b/drivers/ide/ide-tape.c @@ -687,7 +687,7 @@ static void idetape_init_pc(struct ide_atapi_pc *pc) pc->buf_size = IDETAPE_PC_BUFFER_SIZE; pc->bh = NULL; pc->b_data = NULL; - pc->idetape_callback = ide_tape_callback; + pc->callback = ide_tape_callback; } static void idetape_create_request_sense_cmd(struct ide_atapi_pc *pc) @@ -841,7 +841,7 @@ static ide_startstop_t idetape_pc_intr(ide_drive_t *drive) if (tape->failed_pc == pc) tape->failed_pc = NULL; /* Command finished - Call the callback function */ - pc->idetape_callback(drive); + pc->callback(drive); return ide_stopped; } @@ -1034,7 +1034,7 @@ static ide_startstop_t idetape_issue_pc(ide_drive_t *drive, pc->error = IDETAPE_ERROR_GENERAL; } tape->failed_pc = NULL; - pc->idetape_callback(drive); + pc->callback(drive); return ide_stopped; } debug_log(DBG_SENSE, "Retry #%d, cmd = %02X\n", pc->retries, pc->c[0]); @@ -1120,7 +1120,7 @@ static ide_startstop_t idetape_media_access_finished(ide_drive_t *drive) pc->error = IDETAPE_ERROR_GENERAL; tape->failed_pc = NULL; } - pc->idetape_callback(drive); + pc->callback(drive); return ide_stopped; } -- cgit v1.2.3 From 5e3310958204912f3f00be2592c945fbc37db6ae Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Tue, 15 Jul 2008 21:21:56 +0200 Subject: ide-{floppy,tape}: PC_FLAG_DMA_RECOMMENDED -> PC_FLAG_DMA_OK * Use PC_FLAG_DMA_OK flag instead of PC_FLAG_DMA_RECOMMENDED one. * Remove no longer used PC_FLAG_DMA_RECOMMENDED flag. There should be no functional changes caused by this patch. Cc: Borislav Petkov Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/ide/ide-tape.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'drivers/ide/ide-tape.c') diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c index ce9b6d327528..e8a5852fa2d4 100644 --- a/drivers/ide/ide-tape.c +++ b/drivers/ide/ide-tape.c @@ -1050,7 +1050,7 @@ static ide_startstop_t idetape_issue_pc(ide_drive_t *drive, pc->flags &= ~PC_FLAG_DMA_ERROR; ide_dma_off(drive); } - if ((pc->flags & PC_FLAG_DMA_RECOMMENDED) && drive->using_dma) + if ((pc->flags & PC_FLAG_DMA_OK) && drive->using_dma) dma_ok = !hwif->dma_ops->dma_setup(drive); ide_pktcmd_tf_load(drive, IDE_TFLAG_OUT_DEVICE, bcount, dma_ok); @@ -1138,7 +1138,7 @@ static void idetape_create_read_cmd(idetape_tape_t *tape, pc->buf_size = length * tape->blk_size; pc->req_xfer = pc->buf_size; if (pc->req_xfer == tape->buffer_size) - pc->flags |= PC_FLAG_DMA_RECOMMENDED; + pc->flags |= PC_FLAG_DMA_OK; } static void idetape_create_write_cmd(idetape_tape_t *tape, @@ -1157,7 +1157,7 @@ static void idetape_create_write_cmd(idetape_tape_t *tape, pc->buf_size = length * tape->blk_size; pc->req_xfer = pc->buf_size; if (pc->req_xfer == tape->buffer_size) - pc->flags |= PC_FLAG_DMA_RECOMMENDED; + pc->flags |= PC_FLAG_DMA_OK; } static ide_startstop_t idetape_do_request(ide_drive_t *drive, -- cgit v1.2.3 From 9fd13a27c8a35ff1986793cb96aaedb5e75b5368 Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Tue, 15 Jul 2008 21:21:57 +0200 Subject: ide-tape: set PC_FLAG_DMA_IN_PROGRESS flag in idetape_transfer_pc() Set PC_FLAG_DMA_IN_PROGRESS flag in idetape_transfer_pc() instead of idetape_issue_pc() to match the other ATAPI device drivers. Cc: Borislav Petkov Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/ide/ide-tape.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) (limited to 'drivers/ide/ide-tape.c') diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c index e8a5852fa2d4..1ce8b31453c5 100644 --- a/drivers/ide/ide-tape.c +++ b/drivers/ide/ide-tape.c @@ -984,8 +984,10 @@ static ide_startstop_t idetape_transfer_pc(ide_drive_t *drive) ide_set_handler(drive, &idetape_pc_intr, IDETAPE_WAIT_CMD, NULL); /* Begin DMA, if necessary */ - if (pc->flags & PC_FLAG_DMA_IN_PROGRESS) + if (pc->flags & PC_FLAG_DMA_OK) { + pc->flags |= PC_FLAG_DMA_IN_PROGRESS; hwif->dma_ops->dma_start(drive); + } /* Send the actual packet */ hwif->output_data(drive, NULL, pc->c, 12); @@ -1053,11 +1055,11 @@ static ide_startstop_t idetape_issue_pc(ide_drive_t *drive, if ((pc->flags & PC_FLAG_DMA_OK) && drive->using_dma) dma_ok = !hwif->dma_ops->dma_setup(drive); + if (!dma_ok) + pc->flags &= ~PC_FLAG_DMA_OK; + ide_pktcmd_tf_load(drive, IDE_TFLAG_OUT_DEVICE, bcount, dma_ok); - if (dma_ok) - /* Will begin DMA later */ - pc->flags |= PC_FLAG_DMA_IN_PROGRESS; if (test_bit(IDETAPE_FLAG_DRQ_INTERRUPT, &tape->flags)) { ide_execute_command(drive, WIN_PACKETCMD, &idetape_transfer_pc, IDETAPE_WAIT_CMD, NULL); -- cgit v1.2.3 From 5a7b75ab429e9ed568be50cfbf7091f097457cb8 Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Tue, 15 Jul 2008 21:21:57 +0200 Subject: ide-tape: factor out waiting for good ireason from idetape_transfer_pc() Factor out waiting for good ireason from idetape_transfer_pc() to ide_tape_wait_ireason() as a preparation for adding generic ide_transfer_pc() helper. There should be no functional changes caused by this patch. Cc: Borislav Petkov Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/ide/ide-tape.c | 34 +++++++++++++++++++++++----------- 1 file changed, 23 insertions(+), 11 deletions(-) (limited to 'drivers/ide/ide-tape.c') diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c index 1ce8b31453c5..63b837ef7e05 100644 --- a/drivers/ide/ide-tape.c +++ b/drivers/ide/ide-tape.c @@ -947,21 +947,12 @@ static ide_startstop_t idetape_pc_intr(ide_drive_t *drive) * again, the callback function will be called and then we will handle the next * request. */ -static ide_startstop_t idetape_transfer_pc(ide_drive_t *drive) + +static u8 ide_tape_wait_ireason(ide_drive_t *drive, u8 ireason) { ide_hwif_t *hwif = drive->hwif; - idetape_tape_t *tape = drive->driver_data; - struct ide_atapi_pc *pc = tape->pc; int retries = 100; - ide_startstop_t startstop; - u8 ireason; - if (ide_wait_stat(&startstop, drive, DRQ_STAT, BUSY_STAT, WAIT_READY)) { - printk(KERN_ERR "%s: Strange, packet command initiated yet " - "DRQ isn't asserted\n", drive->name); - return startstop; - } - ireason = hwif->INB(hwif->io_ports.nsect_addr); while (retries-- && ((ireason & CD) == 0 || (ireason & IO))) { printk(KERN_ERR "%s: (IO,CoD != (0,1) while issuing " "a packet command, retrying\n", drive->name); @@ -975,6 +966,27 @@ static ide_startstop_t idetape_transfer_pc(ide_drive_t *drive) ireason &= ~IO; } } + + return ireason; +} + +static ide_startstop_t idetape_transfer_pc(ide_drive_t *drive) +{ + ide_hwif_t *hwif = drive->hwif; + idetape_tape_t *tape = drive->driver_data; + struct ide_atapi_pc *pc = tape->pc; + ide_startstop_t startstop; + u8 ireason; + + if (ide_wait_stat(&startstop, drive, DRQ_STAT, BUSY_STAT, WAIT_READY)) { + printk(KERN_ERR "%s: Strange, packet command initiated yet " + "DRQ isn't asserted\n", drive->name); + return startstop; + } + + ireason = hwif->INB(hwif->io_ports.nsect_addr); + ireason = ide_tape_wait_ireason(drive, ireason); + if ((ireason & CD) == 0 || (ireason & IO)) { printk(KERN_ERR "%s: (IO,CoD) != (0,1) while issuing " "a packet command\n", drive->name); -- cgit v1.2.3 From 794cc6804bb946826b7427d205ac391a5370d361 Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Tue, 15 Jul 2008 21:21:57 +0200 Subject: ide-{cd,floppy,tape}: remove checking for drive->scsi Remove checking for drive->scsi which is no longer set by IDE core code (leave the flag since it will be re-used for generic ATAPI support). Cc: Borislav Petkov Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/ide/ide-tape.c | 5 ----- 1 file changed, 5 deletions(-) (limited to 'drivers/ide/ide-tape.c') diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c index 63b837ef7e05..2a362138f973 100644 --- a/drivers/ide/ide-tape.c +++ b/drivers/ide/ide-tape.c @@ -2850,11 +2850,6 @@ static int ide_tape_probe(ide_drive_t *drive) " the driver\n", drive->name); goto failed; } - if (drive->scsi) { - printk(KERN_INFO "ide-tape: passing drive %s to ide-scsi" - " emulation.\n", drive->name); - goto failed; - } tape = kzalloc(sizeof(idetape_tape_t), GFP_KERNEL); if (tape == NULL) { printk(KERN_ERR "ide-tape: %s: Can't allocate a tape struct\n", -- cgit v1.2.3 From 594c16d8dd54cd7b1c5ef1ec3ac0f6bf34301dad Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Tue, 15 Jul 2008 21:21:58 +0200 Subject: ide: add ide_transfer_pc() helper * Add ide-atapi.c file for generic ATAPI support together with CONFIG_IDE_ATAPI config option. * Add generic ide_transfer_pc() helper to ide-atapi.c and then convert ide-{floppy,tape,scsi} device drivers to use it. There should be no functional changes caused by this patch. Cc: Borislav Petkov Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/ide/ide-tape.c | 56 ++------------------------------------------------ 1 file changed, 2 insertions(+), 54 deletions(-) (limited to 'drivers/ide/ide-tape.c') diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c index 2a362138f973..5adc2c9ae418 100644 --- a/drivers/ide/ide-tape.c +++ b/drivers/ide/ide-tape.c @@ -947,64 +947,12 @@ static ide_startstop_t idetape_pc_intr(ide_drive_t *drive) * again, the callback function will be called and then we will handle the next * request. */ - -static u8 ide_tape_wait_ireason(ide_drive_t *drive, u8 ireason) -{ - ide_hwif_t *hwif = drive->hwif; - int retries = 100; - - while (retries-- && ((ireason & CD) == 0 || (ireason & IO))) { - printk(KERN_ERR "%s: (IO,CoD != (0,1) while issuing " - "a packet command, retrying\n", drive->name); - udelay(100); - ireason = hwif->INB(hwif->io_ports.nsect_addr); - if (retries == 0) { - printk(KERN_ERR "%s: (IO,CoD != (0,1) while issuing " - "a packet command, ignoring\n", - drive->name); - ireason |= CD; - ireason &= ~IO; - } - } - - return ireason; -} - static ide_startstop_t idetape_transfer_pc(ide_drive_t *drive) { - ide_hwif_t *hwif = drive->hwif; idetape_tape_t *tape = drive->driver_data; - struct ide_atapi_pc *pc = tape->pc; - ide_startstop_t startstop; - u8 ireason; - - if (ide_wait_stat(&startstop, drive, DRQ_STAT, BUSY_STAT, WAIT_READY)) { - printk(KERN_ERR "%s: Strange, packet command initiated yet " - "DRQ isn't asserted\n", drive->name); - return startstop; - } - - ireason = hwif->INB(hwif->io_ports.nsect_addr); - ireason = ide_tape_wait_ireason(drive, ireason); - if ((ireason & CD) == 0 || (ireason & IO)) { - printk(KERN_ERR "%s: (IO,CoD) != (0,1) while issuing " - "a packet command\n", drive->name); - return ide_do_reset(drive); - } - /* Set the interrupt routine */ - ide_set_handler(drive, &idetape_pc_intr, IDETAPE_WAIT_CMD, NULL); - - /* Begin DMA, if necessary */ - if (pc->flags & PC_FLAG_DMA_OK) { - pc->flags |= PC_FLAG_DMA_IN_PROGRESS; - hwif->dma_ops->dma_start(drive); - } - - /* Send the actual packet */ - hwif->output_data(drive, NULL, pc->c, 12); - - return ide_started; + return ide_transfer_pc(drive, tape->pc, idetape_pc_intr, + IDETAPE_WAIT_CMD, NULL); } static ide_startstop_t idetape_issue_pc(ide_drive_t *drive, -- cgit v1.2.3 From 28c7214bd8c2bbd4873b8f1e7f58d86d3731124f Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Tue, 15 Jul 2008 21:21:59 +0200 Subject: ide: add PC_FLAG_DRQ_INTERRUPT pc flag Add PC_FLAG_DRQ_INTERRUPT pc flag, set it in ide*_do_request() and check for it (instead of checking for IDE*_FLAG_DRQ_INTERRUPT) in ide*_issue_pc(). This is a preparation for adding generic ide_issue_pc() helper. There should be no functional changes caused by this patch. Cc: Borislav Petkov Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/ide/ide-tape.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) (limited to 'drivers/ide/ide-tape.c') diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c index 5adc2c9ae418..cba18a675506 100644 --- a/drivers/ide/ide-tape.c +++ b/drivers/ide/ide-tape.c @@ -1020,7 +1020,7 @@ static ide_startstop_t idetape_issue_pc(ide_drive_t *drive, ide_pktcmd_tf_load(drive, IDE_TFLAG_OUT_DEVICE, bcount, dma_ok); - if (test_bit(IDETAPE_FLAG_DRQ_INTERRUPT, &tape->flags)) { + if (pc->flags & PC_FLAG_DRQ_INTERRUPT) { ide_execute_command(drive, WIN_PACKETCMD, &idetape_transfer_pc, IDETAPE_WAIT_CMD, NULL); return ide_started; @@ -1143,8 +1143,10 @@ static ide_startstop_t idetape_do_request(ide_drive_t *drive, } /* Retry a failed packet command */ - if (tape->failed_pc && tape->pc->c[0] == REQUEST_SENSE) - return idetape_issue_pc(drive, tape->failed_pc); + if (tape->failed_pc && tape->pc->c[0] == REQUEST_SENSE) { + pc = tape->failed_pc; + goto out; + } if (postponed_rq != NULL) if (rq != postponed_rq) { @@ -1216,6 +1218,9 @@ static ide_startstop_t idetape_do_request(ide_drive_t *drive, } BUG(); out: + if (test_bit(IDETAPE_FLAG_DRQ_INTERRUPT, &tape->flags)) + pc->flags |= PC_FLAG_DRQ_INTERRUPT; + return idetape_issue_pc(drive, pc); } -- cgit v1.2.3 From 6bf1641ca1c7554f0da54aaf89788731b541bacc Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Tue, 15 Jul 2008 21:22:00 +0200 Subject: ide: add ide_issue_pc() helper Add generic ide_issue_pc() helper to ide-atapi.c and then convert ide-{floppy,tape,scsi} device drivers to use it. There should be no functional changes caused by this patch. Cc: Borislav Petkov Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/ide/ide-tape.c | 30 ++---------------------------- 1 file changed, 2 insertions(+), 28 deletions(-) (limited to 'drivers/ide/ide-tape.c') diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c index cba18a675506..7907a1e41918 100644 --- a/drivers/ide/ide-tape.c +++ b/drivers/ide/ide-tape.c @@ -958,10 +958,7 @@ static ide_startstop_t idetape_transfer_pc(ide_drive_t *drive) static ide_startstop_t idetape_issue_pc(ide_drive_t *drive, struct ide_atapi_pc *pc) { - ide_hwif_t *hwif = drive->hwif; idetape_tape_t *tape = drive->driver_data; - int dma_ok = 0; - u16 bcount; if (tape->pc->c[0] == REQUEST_SENSE && pc->c[0] == REQUEST_SENSE) { @@ -1002,32 +999,9 @@ static ide_startstop_t idetape_issue_pc(ide_drive_t *drive, debug_log(DBG_SENSE, "Retry #%d, cmd = %02X\n", pc->retries, pc->c[0]); pc->retries++; - /* We haven't transferred any data yet */ - pc->xferred = 0; - pc->cur_pos = pc->buf; - /* Request to transfer the entire buffer at once */ - bcount = pc->req_xfer; - - if (pc->flags & PC_FLAG_DMA_ERROR) { - pc->flags &= ~PC_FLAG_DMA_ERROR; - ide_dma_off(drive); - } - if ((pc->flags & PC_FLAG_DMA_OK) && drive->using_dma) - dma_ok = !hwif->dma_ops->dma_setup(drive); - - if (!dma_ok) - pc->flags &= ~PC_FLAG_DMA_OK; - - ide_pktcmd_tf_load(drive, IDE_TFLAG_OUT_DEVICE, bcount, dma_ok); - if (pc->flags & PC_FLAG_DRQ_INTERRUPT) { - ide_execute_command(drive, WIN_PACKETCMD, &idetape_transfer_pc, - IDETAPE_WAIT_CMD, NULL); - return ide_started; - } else { - ide_execute_pkt_cmd(drive); - return idetape_transfer_pc(drive); - } + return ide_issue_pc(drive, pc, idetape_transfer_pc, + IDETAPE_WAIT_CMD, NULL); } /* A mode sense command is used to "sense" tape parameters. */ -- cgit v1.2.3 From dd2e9a032bc552f6e2ae852e81cde602c09d7d3e Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Tue, 15 Jul 2008 21:22:01 +0200 Subject: ide-{floppy,tape}: move checking of ->failed_pc to ->callback Move checking/resetting of ->failed_pc from ide*_pc_intr() to ->callback as a preparation for adding generic ide_pc_intr() helper. There should be no functional changes caused by this patch. Cc: Borislav Petkov Signed-off-by: Bartlomiej Zolnierkiewicz --- --- drivers/ide/ide-tape.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) (limited to 'drivers/ide/ide-tape.c') diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c index 7907a1e41918..0fec58ebee85 100644 --- a/drivers/ide/ide-tape.c +++ b/drivers/ide/ide-tape.c @@ -627,6 +627,9 @@ static void ide_tape_callback(ide_drive_t *drive) debug_log(DBG_PROCS, "Enter %s\n", __func__); + if (tape->failed_pc == pc) + tape->failed_pc = NULL; + if (pc->c[0] == REQUEST_SENSE) { if (uptodate) idetape_analyze_error(drive, pc->buf); @@ -838,8 +841,6 @@ static ide_startstop_t idetape_pc_intr(ide_drive_t *drive) idetape_postpone_request(drive); return ide_stopped; } - if (tape->failed_pc == pc) - tape->failed_pc = NULL; /* Command finished - Call the callback function */ pc->callback(drive); return ide_stopped; @@ -1050,8 +1051,6 @@ static ide_startstop_t idetape_media_access_finished(ide_drive_t *drive) return ide_stopped; } pc->error = 0; - if (tape->failed_pc == pc) - tape->failed_pc = NULL; } else { pc->error = IDETAPE_ERROR_GENERAL; tape->failed_pc = NULL; -- cgit v1.2.3 From 74e63e74ea57e06839aa5fcf016eace35da26050 Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Tue, 15 Jul 2008 21:22:01 +0200 Subject: ide-tape: factor out DSC handling from idetape_pc_intr() Factor out DSC handling from idetape_pc_intr() to ide_tape_handle_dsc() helper as a preparation for adding generic ide_pc_intr() helper. There should be no functional changes caused by this patch. Cc: Borislav Petkov Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/ide/ide-tape.c | 19 +++++++++++++------ 1 file changed, 13 insertions(+), 6 deletions(-) (limited to 'drivers/ide/ide-tape.c') diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c index 0fec58ebee85..b224823a8ae7 100644 --- a/drivers/ide/ide-tape.c +++ b/drivers/ide/ide-tape.c @@ -768,6 +768,18 @@ static void idetape_postpone_request(ide_drive_t *drive) ide_stall_queue(drive, tape->dsc_poll_freq); } +static void ide_tape_handle_dsc(ide_drive_t *drive) +{ + idetape_tape_t *tape = drive->driver_data; + + /* Media access command */ + tape->dsc_polling_start = jiffies; + tape->dsc_poll_freq = IDETAPE_DSC_MA_FAST; + tape->dsc_timeout = jiffies + IDETAPE_DSC_MA_TIMEOUT; + /* Allow ide.c to handle other requests */ + idetape_postpone_request(drive); +} + typedef void idetape_io_buf(ide_drive_t *, struct ide_atapi_pc *, unsigned int); /* @@ -833,12 +845,7 @@ static ide_startstop_t idetape_pc_intr(ide_drive_t *drive) pc->error = 0; if ((pc->flags & PC_FLAG_WAIT_FOR_DSC) && (stat & SEEK_STAT) == 0) { - /* Media access command */ - tape->dsc_polling_start = jiffies; - tape->dsc_poll_freq = IDETAPE_DSC_MA_FAST; - tape->dsc_timeout = jiffies + IDETAPE_DSC_MA_TIMEOUT; - /* Allow ide.c to handle other requests */ - idetape_postpone_request(drive); + ide_tape_handle_dsc(drive); return ide_stopped; } /* Command finished - Call the callback function */ -- cgit v1.2.3 From 08424ac24a35b505463919a897b097f27e4dca96 Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Tue, 15 Jul 2008 21:22:01 +0200 Subject: ide-tape: add ide_tape_io_buffers() helper * Add ide_tape_io_buffers() helper which is a wrapper for idetape_{in,out}put_buffers() and convert idetape_pc_intr() to use it. * Remove no longer used idetape_io_buf typedef. There should be no functional changes caused by this patch. Cc: Borislav Petkov Signed-off-by: Bartlomiej Zolnierkiewicz --- --- drivers/ide/ide-tape.c | 15 ++++++++++----- 1 file changed, 10 insertions(+), 5 deletions(-) (limited to 'drivers/ide/ide-tape.c') diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c index b224823a8ae7..6801c68ee7da 100644 --- a/drivers/ide/ide-tape.c +++ b/drivers/ide/ide-tape.c @@ -780,7 +780,14 @@ static void ide_tape_handle_dsc(ide_drive_t *drive) idetape_postpone_request(drive); } -typedef void idetape_io_buf(ide_drive_t *, struct ide_atapi_pc *, unsigned int); +static void ide_tape_io_buffers(ide_drive_t *drive, struct ide_atapi_pc *pc, + unsigned int bcount, int write) +{ + if (write) + idetape_output_buffers(drive, pc, bcount); + else + idetape_input_buffers(drive, pc, bcount); +} /* * This is the usual interrupt handler which will be called during a packet @@ -795,7 +802,6 @@ static ide_startstop_t idetape_pc_intr(ide_drive_t *drive) idetape_tape_t *tape = drive->driver_data; struct ide_atapi_pc *pc = tape->pc; xfer_func_t *xferfunc; - idetape_io_buf *iobuf; unsigned int temp; u16 bcount; u8 stat, ireason; @@ -895,15 +901,14 @@ static ide_startstop_t idetape_pc_intr(ide_drive_t *drive) debug_log(DBG_SENSE, "The device wants to send us more " "data than expected - allowing transfer\n"); } - iobuf = &idetape_input_buffers; xferfunc = hwif->input_data; } else { - iobuf = &idetape_output_buffers; xferfunc = hwif->output_data; } if (pc->bh) - iobuf(drive, pc, bcount); + ide_tape_io_buffers(drive, pc, bcount, + !!(pc->flags & PC_FLAG_WRITING)); else xferfunc(drive, NULL, pc->cur_pos, bcount); -- cgit v1.2.3 From 3e421d324c003f8f002f402141b15d758adbfaef Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Tue, 15 Jul 2008 21:22:01 +0200 Subject: ide-tape: always log debug info in idetape_pc_intr() if debugging is enabled Add DBG_PC_INTR debug level and use it to always log debug info in idetape_pc_intr() if debugging is enabled. While at it: * Use drive->name instead of tape->name. * Log device name with "DMA finished" message. This is a preparation for adding generic ide_pc_intr() helper. Cc: Borislav Petkov Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/ide/ide-tape.c | 19 ++++++++++--------- 1 file changed, 10 insertions(+), 9 deletions(-) (limited to 'drivers/ide/ide-tape.c') diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c index 6801c68ee7da..10f2d3336286 100644 --- a/drivers/ide/ide-tape.c +++ b/drivers/ide/ide-tape.c @@ -56,6 +56,8 @@ enum { DBG_PROCS = (1 << 3), /* buffer alloc info (pc_stack & rq_stack) */ DBG_PCRQ_STACK = (1 << 4), + /* IRQ handler (always log debug info if debugging is on) */ + DBG_PC_INTR = (1 << 5), }; /* define to see debug info */ @@ -64,7 +66,7 @@ enum { #if IDETAPE_DEBUG_LOG #define debug_log(lvl, fmt, args...) \ { \ - if (tape->debug_mask & lvl) \ + if ((lvl & DBG_PC_INTR) || (tape->debug_mask & lvl)) \ printk(KERN_INFO "ide-tape: " fmt, ## args); \ } #else @@ -806,7 +808,7 @@ static ide_startstop_t idetape_pc_intr(ide_drive_t *drive) u16 bcount; u8 stat, ireason; - debug_log(DBG_PROCS, "Enter %s - interrupt handler\n", __func__); + debug_log(DBG_PC_INTR, "Enter %s - interrupt handler\n", __func__); /* Clear the interrupt */ stat = ide_read_status(drive); @@ -818,13 +820,12 @@ static ide_startstop_t idetape_pc_intr(ide_drive_t *drive) pc->xferred = pc->req_xfer; idetape_update_buffers(pc); } - debug_log(DBG_PROCS, "DMA finished\n"); - + debug_log(DBG_PC_INTR, "%s: DMA finished\n", drive->name); } /* No more interrupts */ if ((stat & DRQ_STAT) == 0) { - debug_log(DBG_SENSE, "Packet command completed, %d bytes" + debug_log(DBG_PC_INTR, "Packet command completed, %d bytes" " transferred\n", pc->xferred); pc->flags &= ~PC_FLAG_DMA_IN_PROGRESS; @@ -834,14 +835,14 @@ static ide_startstop_t idetape_pc_intr(ide_drive_t *drive) stat &= ~ERR_STAT; if ((stat & ERR_STAT) || (pc->flags & PC_FLAG_DMA_ERROR)) { /* Error detected */ - debug_log(DBG_ERR, "%s: I/O error\n", tape->name); + debug_log(DBG_PC_INTR, "%s: I/O error\n", drive->name); if (pc->c[0] == REQUEST_SENSE) { printk(KERN_ERR "%s: I/O error in request sense" " command\n", drive->name); return ide_do_reset(drive); } - debug_log(DBG_ERR, "[cmd %x]: check condition\n", + debug_log(DBG_PC_INTR, "[cmd %x]: check condition\n", pc->c[0]); /* Retry operation */ @@ -898,7 +899,7 @@ static ide_startstop_t idetape_pc_intr(ide_drive_t *drive) IDETAPE_WAIT_CMD, NULL); return ide_started; } - debug_log(DBG_SENSE, "The device wants to send us more " + debug_log(DBG_PC_INTR, "The device wants to send us more " "data than expected - allowing transfer\n"); } xferfunc = hwif->input_data; @@ -916,7 +917,7 @@ static ide_startstop_t idetape_pc_intr(ide_drive_t *drive) pc->xferred += bcount; pc->cur_pos += bcount; - debug_log(DBG_SENSE, "[cmd %x] transferred %d bytes on that intr.\n", + debug_log(DBG_PC_INTR, "[cmd %x] transferred %d bytes on that intr.\n", pc->c[0], bcount); /* And set the interrupt handler again */ -- cgit v1.2.3 From 646c0cb6c430f8d3ad3769dd1518fe664ff0ce27 Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Tue, 15 Jul 2008 21:22:03 +0200 Subject: ide: add ide_pc_intr() helper * ide-tape.c: add 'drive' argument to idetape_update_buffers(). * Add generic ide_pc_intr() helper to ide-atapi.c and then convert ide-{floppy,tape,scsi} device drivers to use it. * ide-tape.c: remove no longer needed DBG_PC_INTR. There should be no functional changes caused by this patch (unless the debugging is explicitely compiled in). Cc: Borislav Petkov Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/ide/ide-tape.c | 132 +++---------------------------------------------- 1 file changed, 6 insertions(+), 126 deletions(-) (limited to 'drivers/ide/ide-tape.c') diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c index 10f2d3336286..0afa109ec99a 100644 --- a/drivers/ide/ide-tape.c +++ b/drivers/ide/ide-tape.c @@ -56,8 +56,6 @@ enum { DBG_PROCS = (1 << 3), /* buffer alloc info (pc_stack & rq_stack) */ DBG_PCRQ_STACK = (1 << 4), - /* IRQ handler (always log debug info if debugging is on) */ - DBG_PC_INTR = (1 << 5), }; /* define to see debug info */ @@ -66,7 +64,7 @@ enum { #if IDETAPE_DEBUG_LOG #define debug_log(lvl, fmt, args...) \ { \ - if ((lvl & DBG_PC_INTR) || (tape->debug_mask & lvl)) \ + if (tape->debug_mask & lvl) \ printk(KERN_INFO "ide-tape: " fmt, ## args); \ } #else @@ -441,7 +439,7 @@ static void idetape_output_buffers(ide_drive_t *drive, struct ide_atapi_pc *pc, } } -static void idetape_update_buffers(struct ide_atapi_pc *pc) +static void idetape_update_buffers(ide_drive_t *drive, struct ide_atapi_pc *pc) { struct idetape_bh *bh = pc->bh; int count; @@ -526,7 +524,7 @@ static void idetape_analyze_error(ide_drive_t *drive, u8 *sense) pc->xferred = pc->req_xfer - tape->blk_size * get_unaligned_be32(&sense[3]); - idetape_update_buffers(pc); + idetape_update_buffers(drive, pc); } /* @@ -800,129 +798,11 @@ static void ide_tape_io_buffers(ide_drive_t *drive, struct ide_atapi_pc *pc, */ static ide_startstop_t idetape_pc_intr(ide_drive_t *drive) { - ide_hwif_t *hwif = drive->hwif; idetape_tape_t *tape = drive->driver_data; - struct ide_atapi_pc *pc = tape->pc; - xfer_func_t *xferfunc; - unsigned int temp; - u16 bcount; - u8 stat, ireason; - - debug_log(DBG_PC_INTR, "Enter %s - interrupt handler\n", __func__); - - /* Clear the interrupt */ - stat = ide_read_status(drive); - - if (pc->flags & PC_FLAG_DMA_IN_PROGRESS) { - if (hwif->dma_ops->dma_end(drive) || (stat & ERR_STAT)) { - pc->flags |= PC_FLAG_DMA_ERROR; - } else { - pc->xferred = pc->req_xfer; - idetape_update_buffers(pc); - } - debug_log(DBG_PC_INTR, "%s: DMA finished\n", drive->name); - } - - /* No more interrupts */ - if ((stat & DRQ_STAT) == 0) { - debug_log(DBG_PC_INTR, "Packet command completed, %d bytes" - " transferred\n", pc->xferred); - - pc->flags &= ~PC_FLAG_DMA_IN_PROGRESS; - local_irq_enable_in_hardirq(); - - if ((stat & ERR_STAT) && pc->c[0] == REQUEST_SENSE) - stat &= ~ERR_STAT; - if ((stat & ERR_STAT) || (pc->flags & PC_FLAG_DMA_ERROR)) { - /* Error detected */ - debug_log(DBG_PC_INTR, "%s: I/O error\n", drive->name); - - if (pc->c[0] == REQUEST_SENSE) { - printk(KERN_ERR "%s: I/O error in request sense" - " command\n", drive->name); - return ide_do_reset(drive); - } - debug_log(DBG_PC_INTR, "[cmd %x]: check condition\n", - pc->c[0]); - - /* Retry operation */ - idetape_retry_pc(drive); - return ide_stopped; - } - pc->error = 0; - if ((pc->flags & PC_FLAG_WAIT_FOR_DSC) && - (stat & SEEK_STAT) == 0) { - ide_tape_handle_dsc(drive); - return ide_stopped; - } - /* Command finished - Call the callback function */ - pc->callback(drive); - return ide_stopped; - } - - if (pc->flags & PC_FLAG_DMA_IN_PROGRESS) { - pc->flags &= ~PC_FLAG_DMA_IN_PROGRESS; - printk(KERN_ERR "%s: The device wants to issue more interrupts " - "in DMA mode\n", drive->name); - ide_dma_off(drive); - return ide_do_reset(drive); - } - /* Get the number of bytes to transfer on this interrupt. */ - bcount = (hwif->INB(hwif->io_ports.lbah_addr) << 8) | - hwif->INB(hwif->io_ports.lbam_addr); - - ireason = hwif->INB(hwif->io_ports.nsect_addr); - - if (ireason & CD) { - printk(KERN_ERR "%s: CoD != 0 in %s\n", drive->name, __func__); - return ide_do_reset(drive); - } - if (((ireason & IO) == IO) == !!(pc->flags & PC_FLAG_WRITING)) { - /* Hopefully, we will never get here */ - printk(KERN_ERR "%s: We wanted to %s, but the device wants us " - "to %s!\n", drive->name, - (ireason & IO) ? "Write" : "Read", - (ireason & IO) ? "Read" : "Write"); - return ide_do_reset(drive); - } - if (!(pc->flags & PC_FLAG_WRITING)) { - /* Reading - Check that we have enough space */ - temp = pc->xferred + bcount; - if (temp > pc->req_xfer) { - if (temp > pc->buf_size) { - printk(KERN_ERR "%s: The device wants to send " - "us more data than expected - " - "discarding data\n", - drive->name); - ide_pad_transfer(drive, 0, bcount); - ide_set_handler(drive, &idetape_pc_intr, - IDETAPE_WAIT_CMD, NULL); - return ide_started; - } - debug_log(DBG_PC_INTR, "The device wants to send us more " - "data than expected - allowing transfer\n"); - } - xferfunc = hwif->input_data; - } else { - xferfunc = hwif->output_data; - } - - if (pc->bh) - ide_tape_io_buffers(drive, pc, bcount, - !!(pc->flags & PC_FLAG_WRITING)); - else - xferfunc(drive, NULL, pc->cur_pos, bcount); - - /* Update the current position */ - pc->xferred += bcount; - pc->cur_pos += bcount; - - debug_log(DBG_PC_INTR, "[cmd %x] transferred %d bytes on that intr.\n", - pc->c[0], bcount); - /* And set the interrupt handler again */ - ide_set_handler(drive, &idetape_pc_intr, IDETAPE_WAIT_CMD, NULL); - return ide_started; + return ide_pc_intr(drive, tape->pc, idetape_pc_intr, IDETAPE_WAIT_CMD, + NULL, idetape_update_buffers, idetape_retry_pc, + ide_tape_handle_dsc, ide_tape_io_buffers); } /* -- cgit v1.2.3 From cd2abbfec84f43db740483daf4ea528d49d8858f Mon Sep 17 00:00:00 2001 From: Borislav Petkov Date: Tue, 15 Jul 2008 21:22:03 +0200 Subject: ide-tape: unify idetape_create_read/write_cmd A straightforward one. There should be no functional change resulting from this change. [bart: minor fixups] Signed-off-by: Borislav Petkov Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/ide/ide-tape.c | 45 ++++++++++++++++++--------------------------- 1 file changed, 18 insertions(+), 27 deletions(-) (limited to 'drivers/ide/ide-tape.c') diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c index 0afa109ec99a..6e1233bdf3a0 100644 --- a/drivers/ide/ide-tape.c +++ b/drivers/ide/ide-tape.c @@ -952,40 +952,29 @@ static ide_startstop_t idetape_media_access_finished(ide_drive_t *drive) return ide_stopped; } -static void idetape_create_read_cmd(idetape_tape_t *tape, - struct ide_atapi_pc *pc, - unsigned int length, struct idetape_bh *bh) +static void ide_tape_create_rw_cmd(idetape_tape_t *tape, + struct ide_atapi_pc *pc, unsigned int length, + struct idetape_bh *bh, u8 opcode) { idetape_init_pc(pc); - pc->c[0] = READ_6; put_unaligned(cpu_to_be32(length), (unsigned int *) &pc->c[1]); pc->c[1] = 1; pc->bh = bh; - atomic_set(&bh->b_count, 0); pc->buf = NULL; pc->buf_size = length * tape->blk_size; pc->req_xfer = pc->buf_size; if (pc->req_xfer == tape->buffer_size) pc->flags |= PC_FLAG_DMA_OK; -} -static void idetape_create_write_cmd(idetape_tape_t *tape, - struct ide_atapi_pc *pc, - unsigned int length, struct idetape_bh *bh) -{ - idetape_init_pc(pc); - pc->c[0] = WRITE_6; - put_unaligned(cpu_to_be32(length), (unsigned int *) &pc->c[1]); - pc->c[1] = 1; - pc->flags |= PC_FLAG_WRITING; - pc->bh = bh; - pc->b_data = bh->b_data; - pc->b_count = atomic_read(&bh->b_count); - pc->buf = NULL; - pc->buf_size = length * tape->blk_size; - pc->req_xfer = pc->buf_size; - if (pc->req_xfer == tape->buffer_size) - pc->flags |= PC_FLAG_DMA_OK; + if (opcode == READ_6) { + pc->c[0] = READ_6; + atomic_set(&bh->b_count, 0); + } else if (opcode == WRITE_6) { + pc->c[0] = WRITE_6; + pc->flags |= PC_FLAG_WRITING; + pc->b_data = bh->b_data; + pc->b_count = atomic_read(&bh->b_count); + } } static ide_startstop_t idetape_do_request(ide_drive_t *drive, @@ -1062,14 +1051,16 @@ static ide_startstop_t idetape_do_request(ide_drive_t *drive, } if (rq->cmd[0] & REQ_IDETAPE_READ) { pc = idetape_next_pc_storage(drive); - idetape_create_read_cmd(tape, pc, rq->current_nr_sectors, - (struct idetape_bh *)rq->special); + ide_tape_create_rw_cmd(tape, pc, rq->current_nr_sectors, + (struct idetape_bh *)rq->special, + READ_6); goto out; } if (rq->cmd[0] & REQ_IDETAPE_WRITE) { pc = idetape_next_pc_storage(drive); - idetape_create_write_cmd(tape, pc, rq->current_nr_sectors, - (struct idetape_bh *)rq->special); + ide_tape_create_rw_cmd(tape, pc, rq->current_nr_sectors, + (struct idetape_bh *)rq->special, + WRITE_6); goto out; } if (rq->cmd[0] & REQ_IDETAPE_PC1) { -- cgit v1.2.3