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/scsi/ide-scsi.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/scsi/ide-scsi.c') diff --git a/drivers/scsi/ide-scsi.c b/drivers/scsi/ide-scsi.c index 44d8d5163a1..89ecf013219 100644 --- a/drivers/scsi/ide-scsi.c +++ b/drivers/scsi/ide-scsi.c @@ -235,6 +235,7 @@ static int idescsi_check_condition(ide_drive_t *drive, pc->c[0] = REQUEST_SENSE; pc->c[4] = pc->req_xfer = pc->buf_size = SCSI_SENSE_BUFFERSIZE; rq->cmd_type = REQ_TYPE_SENSE; + rq->cmd_flags |= REQ_PREEMPT; pc->timeout = jiffies + WAIT_READY; /* NOTE! Save the failed packet command in "rq->buffer" */ rq->buffer = (void *) failed_cmd->special; -- cgit v1.2.3 From 124cafc5eb973e748c4ce3dc1caad29274e64613 Mon Sep 17 00:00:00 2001 From: FUJITA Tomonori Date: Tue, 15 Jul 2008 21:21:44 +0200 Subject: ide: remove ide_init_drive_cmd ide_init_drive_cmd just calls blk_rq_init. This converts the users of ide_init_drive_cmd to use blk_rq_init directly and removes ide_init_drive_cmd. Signed-off-by: FUJITA Tomonori Cc: Borislav Petkov Cc: Jens Axboe Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/scsi/ide-scsi.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/scsi/ide-scsi.c') diff --git a/drivers/scsi/ide-scsi.c b/drivers/scsi/ide-scsi.c index 89ecf013219..da261806d62 100644 --- a/drivers/scsi/ide-scsi.c +++ b/drivers/scsi/ide-scsi.c @@ -228,7 +228,7 @@ static int idescsi_check_condition(ide_drive_t *drive, kfree(pc); return -ENOMEM; } - ide_init_drive_cmd(rq); + blk_rq_init(NULL, rq); rq->special = (char *) pc; pc->rq = rq; pc->buf = buf; @@ -786,7 +786,7 @@ static int idescsi_queue (struct scsi_cmnd *cmd, } } - ide_init_drive_cmd (rq); + blk_rq_init(NULL, rq); rq->special = (char *) pc; rq->cmd_type = REQ_TYPE_SPECIAL; spin_unlock_irq(host->host_lock); -- 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/scsi/ide-scsi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/scsi/ide-scsi.c') diff --git a/drivers/scsi/ide-scsi.c b/drivers/scsi/ide-scsi.c index da261806d62..3222aa589db 100644 --- a/drivers/scsi/ide-scsi.c +++ b/drivers/scsi/ide-scsi.c @@ -564,7 +564,7 @@ static ide_startstop_t idescsi_issue_pc(ide_drive_t *drive, hwif->sg_mapped = 0; } - ide_pktcmd_tf_load(drive, IDE_TFLAG_NO_SELECT_MASK, bcount, dma); + ide_pktcmd_tf_load(drive, 0, bcount, dma); if (dma) pc->flags |= PC_FLAG_DMA_OK; -- cgit v1.2.3 From f8c4bd0ab2b8783c0f080957781e9f70bee48eaa Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Tue, 15 Jul 2008 21:21:49 +0200 Subject: ide: pass 'hwif *' instead of 'drive *' to ->OUTBSYNC method There should be no functional changes caused by this patch. Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/scsi/ide-scsi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/scsi/ide-scsi.c') diff --git a/drivers/scsi/ide-scsi.c b/drivers/scsi/ide-scsi.c index 3222aa589db..d7fd5e550a2 100644 --- a/drivers/scsi/ide-scsi.c +++ b/drivers/scsi/ide-scsi.c @@ -257,7 +257,7 @@ idescsi_atapi_error(ide_drive_t *drive, struct request *rq, u8 stat, u8 err) if (ide_read_status(drive) & (BUSY_STAT | DRQ_STAT)) /* force an abort */ - hwif->OUTBSYNC(drive, WIN_IDLEIMMEDIATE, + hwif->OUTBSYNC(hwif, WIN_IDLEIMMEDIATE, hwif->io_ports.command_addr); rq->errors++; -- cgit v1.2.3 From 7e12ca11d65f4cb29ed58ea3948f8c5d4f57b35e Mon Sep 17 00:00:00 2001 From: FUJITA Tomonori Date: Tue, 15 Jul 2008 21:21:50 +0200 Subject: ide-scsi: replace ide_do_drive_cmd with blk_execute_rq_nowait All the callers of ide_do_drive_cmd() except for ide-scsi use ide_preempt action argument. This converts ide-scsi to use blk_execute_rq_nowait instead of ide_do_drive_cmd so that we can remove the action argument in ide_do_drive_cmd and ide_action_t typedef. Signed-off-by: FUJITA Tomonori Cc: Borislav Petkov Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/scsi/ide-scsi.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'drivers/scsi/ide-scsi.c') diff --git a/drivers/scsi/ide-scsi.c b/drivers/scsi/ide-scsi.c index d7fd5e550a2..58e30efe7a7 100644 --- a/drivers/scsi/ide-scsi.c +++ b/drivers/scsi/ide-scsi.c @@ -790,8 +790,7 @@ static int idescsi_queue (struct scsi_cmnd *cmd, rq->special = (char *) pc; rq->cmd_type = REQ_TYPE_SPECIAL; spin_unlock_irq(host->host_lock); - rq->rq_disk = scsi->disk; - (void) ide_do_drive_cmd (drive, rq, ide_end); + blk_execute_rq_nowait(drive->queue, scsi->disk, rq, 0, NULL); spin_lock_irq(host->host_lock); return 0; abort: -- 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/scsi/ide-scsi.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers/scsi/ide-scsi.c') diff --git a/drivers/scsi/ide-scsi.c b/drivers/scsi/ide-scsi.c index 58e30efe7a7..569ffde6d04 100644 --- a/drivers/scsi/ide-scsi.c +++ b/drivers/scsi/ide-scsi.c @@ -245,7 +245,8 @@ static int idescsi_check_condition(ide_drive_t *drive, ide_scsi_hex_dump(pc->c, 6); } rq->rq_disk = scsi->disk; - return ide_do_drive_cmd(drive, rq, ide_preempt); + ide_do_drive_cmd(drive, rq); + return 0; } static int idescsi_end_request(ide_drive_t *, int, int); -- cgit v1.2.3 From b3d96afccf8b5c67b66a61efb88c53ff029c6611 Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Tue, 15 Jul 2008 21:21:51 +0200 Subject: ide-scsi: fix race in idescsi_transfer_pc() Start DMA engine before sending content of packet command (otherwise it is possible that IRQ will happen before DMA engine is started). Cc: Borislav Petkov Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/scsi/ide-scsi.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) (limited to 'drivers/scsi/ide-scsi.c') diff --git a/drivers/scsi/ide-scsi.c b/drivers/scsi/ide-scsi.c index 569ffde6d04..2553ef4d5a9 100644 --- a/drivers/scsi/ide-scsi.c +++ b/drivers/scsi/ide-scsi.c @@ -494,13 +494,14 @@ static ide_startstop_t idescsi_transfer_pc(ide_drive_t *drive) /* Set the interrupt routine */ ide_set_handler(drive, &idescsi_pc_intr, get_timeout(pc), idescsi_expiry); - /* Send the actual packet */ - hwif->output_data(drive, NULL, scsi->pc->c, 12); - 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, scsi->pc->c, 12); + return ide_started; } -- cgit v1.2.3 From e8e25f03e19c2c47834c821511625c0b80567827 Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Tue, 15 Jul 2008 21:21:51 +0200 Subject: ide-scsi: fix DRQ checking for DMA transfers in idescsi_pc_intr() If DRQ bit of Status Register is not cleared it is an error condition and should be handled accordingly (disable DMA + reset the device). Cc: Borislav Petkov Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/scsi/ide-scsi.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) (limited to 'drivers/scsi/ide-scsi.c') diff --git a/drivers/scsi/ide-scsi.c b/drivers/scsi/ide-scsi.c index 2553ef4d5a9..e67cf8aa946 100644 --- a/drivers/scsi/ide-scsi.c +++ b/drivers/scsi/ide-scsi.c @@ -388,7 +388,6 @@ static ide_startstop_t idescsi_pc_intr (ide_drive_t *drive) return ide_stopped; } if (pc->flags & PC_FLAG_DMA_IN_PROGRESS) { - pc->flags &= ~PC_FLAG_DMA_IN_PROGRESS; #if IDESCSI_DEBUG_LOG printk ("ide-scsi: %s: DMA complete\n", drive->name); #endif /* IDESCSI_DEBUG_LOG */ @@ -404,12 +403,20 @@ static ide_startstop_t idescsi_pc_intr (ide_drive_t *drive) if (test_bit(IDESCSI_LOG_CMD, &scsi->log)) printk(KERN_INFO "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) rq->errors++; idescsi_end_request (drive, 1, 0); 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); + } bcount = (hwif->INB(hwif->io_ports.lbah_addr) << 8) | hwif->INB(hwif->io_ports.lbam_addr); ireason = hwif->INB(hwif->io_ports.nsect_addr); -- cgit v1.2.3 From c04bbc812b05b304a9118687d0e0a47e35f00d1d Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Tue, 15 Jul 2008 21:21:51 +0200 Subject: ide-scsi: fix handling of DMA errors in idescsi_pc_intr() Check return value of ->dma_end method and if there was a DMA error handle it accordingly (set PC_FLAG_DMA_ERROR pc flag, don't update pc->xferred and increase rq->errors). Also move debug message in the right place while at it. Cc: Borislav Petkov Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/scsi/ide-scsi.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) (limited to 'drivers/scsi/ide-scsi.c') diff --git a/drivers/scsi/ide-scsi.c b/drivers/scsi/ide-scsi.c index e67cf8aa946..ed92cf7a768 100644 --- a/drivers/scsi/ide-scsi.c +++ b/drivers/scsi/ide-scsi.c @@ -388,11 +388,13 @@ static ide_startstop_t idescsi_pc_intr (ide_drive_t *drive) return ide_stopped; } if (pc->flags & PC_FLAG_DMA_IN_PROGRESS) { + if (hwif->dma_ops->dma_end(drive)) + pc->flags |= PC_FLAG_DMA_ERROR; + else + pc->xferred = pc->req_xfer; #if IDESCSI_DEBUG_LOG printk ("ide-scsi: %s: DMA complete\n", drive->name); #endif /* IDESCSI_DEBUG_LOG */ - pc->xferred = pc->req_xfer; - (void)hwif->dma_ops->dma_end(drive); } /* Clear the interrupt */ @@ -405,7 +407,7 @@ static ide_startstop_t idescsi_pc_intr (ide_drive_t *drive) " transferred\n", pc->xferred); pc->flags &= ~PC_FLAG_DMA_IN_PROGRESS; local_irq_enable_in_hardirq(); - if (stat & ERR_STAT) + if ((stat & ERR_STAT) || (pc->flags & PC_FLAG_DMA_ERROR)) rq->errors++; idescsi_end_request (drive, 1, 0); return ide_stopped; -- cgit v1.2.3 From 6c60bd8ea7aa536d67830bc8384ef0ebdfb8aad4 Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Tue, 15 Jul 2008 21:21:52 +0200 Subject: ide-scsi: fix Interrupt Reason checking in idescsi_pc_intr() Set PC_FLAG_WRITING pc flag in idescsi_queue() (if needed) and then fix Interrupt Reason checking in idescsi_pc_intr(). Cc: Borislav Petkov Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/scsi/ide-scsi.c | 17 +++++++++++------ 1 file changed, 11 insertions(+), 6 deletions(-) (limited to 'drivers/scsi/ide-scsi.c') diff --git a/drivers/scsi/ide-scsi.c b/drivers/scsi/ide-scsi.c index ed92cf7a768..08807070e08 100644 --- a/drivers/scsi/ide-scsi.c +++ b/drivers/scsi/ide-scsi.c @@ -427,7 +427,15 @@ static ide_startstop_t idescsi_pc_intr (ide_drive_t *drive) printk(KERN_ERR "ide-scsi: CoD != 0 in idescsi_pc_intr\n"); return ide_do_reset (drive); } - if (ireason & IO) { + 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)) { temp = pc->xferred + bcount; if (temp > pc->req_xfer) { if (temp > pc->buf_size) { @@ -436,7 +444,6 @@ static ide_startstop_t idescsi_pc_intr (ide_drive_t *drive) "- discarding data\n"); temp = pc->buf_size - pc->xferred; if (temp) { - pc->flags &= ~PC_FLAG_WRITING; if (pc->sg) idescsi_input_buffers(drive, pc, temp); @@ -457,15 +464,11 @@ static ide_startstop_t idescsi_pc_intr (ide_drive_t *drive) printk (KERN_NOTICE "ide-scsi: The scsi wants to send us more data than expected - allowing transfer\n"); #endif /* IDESCSI_DEBUG_LOG */ } - } - if (ireason & IO) { - pc->flags &= ~PC_FLAG_WRITING; if (pc->sg) idescsi_input_buffers(drive, pc, bcount); else hwif->input_data(drive, NULL, pc->cur_pos, bcount); } else { - pc->flags |= PC_FLAG_WRITING; if (pc->sg) idescsi_output_buffers(drive, pc, bcount); else @@ -777,6 +780,8 @@ static int idescsi_queue (struct scsi_cmnd *cmd, memset (pc->c, 0, 12); pc->flags = 0; + if (cmd->sc_data_direction == DMA_TO_DEVICE) + pc->flags |= PC_FLAG_WRITING; pc->rq = rq; memcpy (pc->c, cmd->cmnd, cmd->cmd_len); pc->buf = NULL; -- cgit v1.2.3 From 3e52fb4d1f4cc9630422982b6c5fa571e30f9889 Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Tue, 15 Jul 2008 21:21:52 +0200 Subject: ide-scsi: merge idescsi_input_buffers() and idescsi_output_buffers() * Merge idescsi_input_buffers() and idescsi_output_buffers() into ide_scsi_io_buffers() helper. While at it: * Log device name instead of driver name on error. * Use xfer_func_t. Cc: Borislav Petkov Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/scsi/ide-scsi.c | 81 +++++++++++++++---------------------------------- 1 file changed, 24 insertions(+), 57 deletions(-) (limited to 'drivers/scsi/ide-scsi.c') diff --git a/drivers/scsi/ide-scsi.c b/drivers/scsi/ide-scsi.c index 08807070e08..36c2c3bf111 100644 --- a/drivers/scsi/ide-scsi.c +++ b/drivers/scsi/ide-scsi.c @@ -129,51 +129,15 @@ static inline idescsi_scsi_t *drive_to_idescsi(ide_drive_t *ide_drive) #define IDESCSI_PC_RQ 90 /* - * PIO data transfer routines using the scatter gather table. + * PIO data transfer routine using the scatter gather table. */ -static void idescsi_input_buffers(ide_drive_t *drive, struct ide_atapi_pc *pc, - unsigned int bcount) +static void ide_scsi_io_buffers(ide_drive_t *drive, struct ide_atapi_pc *pc, + unsigned int bcount, int write) { ide_hwif_t *hwif = drive->hwif; - int count; + xfer_func_t *xf = write ? hwif->output_data : hwif->input_data; char *buf; - - while (bcount) { - count = min(pc->sg->length - pc->b_count, bcount); - if (PageHighMem(sg_page(pc->sg))) { - unsigned long flags; - - local_irq_save(flags); - buf = kmap_atomic(sg_page(pc->sg), KM_IRQ0) + - pc->sg->offset; - hwif->input_data(drive, NULL, buf + pc->b_count, count); - kunmap_atomic(buf - pc->sg->offset, KM_IRQ0); - local_irq_restore(flags); - } else { - buf = sg_virt(pc->sg); - hwif->input_data(drive, NULL, buf + pc->b_count, count); - } - bcount -= count; pc->b_count += count; - if (pc->b_count == pc->sg->length) { - if (!--pc->sg_cnt) - break; - pc->sg = sg_next(pc->sg); - pc->b_count = 0; - } - } - - if (bcount) { - printk (KERN_ERR "ide-scsi: scatter gather table too small, discarding data\n"); - ide_pad_transfer(drive, 0, bcount); - } -} - -static void idescsi_output_buffers(ide_drive_t *drive, struct ide_atapi_pc *pc, - unsigned int bcount) -{ - ide_hwif_t *hwif = drive->hwif; int count; - char *buf; while (bcount) { count = min(pc->sg->length - pc->b_count, bcount); @@ -182,13 +146,13 @@ static void idescsi_output_buffers(ide_drive_t *drive, struct ide_atapi_pc *pc, local_irq_save(flags); buf = kmap_atomic(sg_page(pc->sg), KM_IRQ0) + - pc->sg->offset; - hwif->output_data(drive, NULL, buf + pc->b_count, count); + pc->sg->offset; + xf(drive, NULL, buf + pc->b_count, count); kunmap_atomic(buf - pc->sg->offset, KM_IRQ0); local_irq_restore(flags); } else { buf = sg_virt(pc->sg); - hwif->output_data(drive, NULL, buf + pc->b_count, count); + xf(drive, NULL, buf + pc->b_count, count); } bcount -= count; pc->b_count += count; if (pc->b_count == pc->sg->length) { @@ -200,8 +164,10 @@ static void idescsi_output_buffers(ide_drive_t *drive, struct ide_atapi_pc *pc, } if (bcount) { - printk (KERN_ERR "ide-scsi: scatter gather table too small, padding with zeros\n"); - ide_pad_transfer(drive, 1, bcount); + printk(KERN_ERR "%s: scatter gather table too small, %s\n", + drive->name, write ? "padding with zeros" + : "discarding data"); + ide_pad_transfer(drive, write, bcount); } } @@ -370,6 +336,7 @@ static ide_startstop_t idescsi_pc_intr (ide_drive_t *drive) ide_hwif_t *hwif = drive->hwif; struct ide_atapi_pc *pc = scsi->pc; struct request *rq = pc->rq; + xfer_func_t *xferfunc; unsigned int temp; u16 bcount; u8 stat, ireason; @@ -445,8 +412,8 @@ static ide_startstop_t idescsi_pc_intr (ide_drive_t *drive) temp = pc->buf_size - pc->xferred; if (temp) { if (pc->sg) - idescsi_input_buffers(drive, pc, - temp); + ide_scsi_io_buffers(drive, pc, + temp, 0); else hwif->input_data(drive, NULL, pc->cur_pos, temp); @@ -464,16 +431,16 @@ static ide_startstop_t idescsi_pc_intr (ide_drive_t *drive) printk (KERN_NOTICE "ide-scsi: The scsi wants to send us more data than expected - allowing transfer\n"); #endif /* IDESCSI_DEBUG_LOG */ } - if (pc->sg) - idescsi_input_buffers(drive, pc, bcount); - else - hwif->input_data(drive, NULL, pc->cur_pos, bcount); - } else { - if (pc->sg) - idescsi_output_buffers(drive, pc, bcount); - else - hwif->output_data(drive, NULL, pc->cur_pos, bcount); - } + xferfunc = hwif->input_data; + } else + xferfunc = hwif->output_data; + + if (pc->sg) + ide_scsi_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; -- cgit v1.2.3 From c8c51129805c0efb32f34afd3af8fe94f5757363 Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Tue, 15 Jul 2008 21:21:52 +0200 Subject: ide-scsi: remove superfluous BUG_ON() from idescsi_transfer_pc() ide_set_handler() bugs on ->handler == NULL so no need to do it in idescsi_transfer_pc(). There should be no functional changes caused by this patch. Cc: Borislav Petkov Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/scsi/ide-scsi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/scsi/ide-scsi.c') diff --git a/drivers/scsi/ide-scsi.c b/drivers/scsi/ide-scsi.c index 36c2c3bf111..e9d3dbf596c 100644 --- a/drivers/scsi/ide-scsi.c +++ b/drivers/scsi/ide-scsi.c @@ -469,7 +469,7 @@ static ide_startstop_t idescsi_transfer_pc(ide_drive_t *drive) "issuing a packet command\n"); return ide_do_reset (drive); } - BUG_ON(HWGROUP(drive)->handler != NULL); + /* Set the interrupt routine */ ide_set_handler(drive, &idescsi_pc_intr, get_timeout(pc), idescsi_expiry); -- cgit v1.2.3 From 43a2b5b29385a3e0997a47c86f286d3645e5cb44 Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Tue, 15 Jul 2008 21:21:52 +0200 Subject: ide-scsi: add debug_log() macro Add debug_log() macro and convert the driver to use it. [ This makes debug messages to be always prefixed with "ide-scsi: " and use KERN_INFO level. ] While at it: * Change "DMA complete" debug message to "DMA finished" to match other ATAPI device drivers. * Use __func__. Cc: Borislav Petkov Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/scsi/ide-scsi.c | 51 ++++++++++++++++++++++++------------------------- 1 file changed, 25 insertions(+), 26 deletions(-) (limited to 'drivers/scsi/ide-scsi.c') diff --git a/drivers/scsi/ide-scsi.c b/drivers/scsi/ide-scsi.c index e9d3dbf596c..d2dad9039e0 100644 --- a/drivers/scsi/ide-scsi.c +++ b/drivers/scsi/ide-scsi.c @@ -60,6 +60,13 @@ #define IDESCSI_DEBUG_LOG 0 +#if IDESCSI_DEBUG_LOG +#define debug_log(fmt, args...) \ + printk(KERN_INFO "ide-scsi: " fmt, ## args) +#else +#define debug_log(fmt, args...) do {} while (0) +#endif + /* * SCSI command transformation layer */ @@ -237,10 +244,9 @@ idescsi_atapi_error(ide_drive_t *drive, struct request *rq, u8 stat, u8 err) static ide_startstop_t idescsi_atapi_abort(ide_drive_t *drive, struct request *rq) { -#if IDESCSI_DEBUG_LOG - printk(KERN_WARNING "idescsi_atapi_abort called for %lu\n", + debug_log("%s called for %lu\n", __func__, ((struct ide_atapi_pc *) rq->special)->scsi_cmd->serial_number); -#endif + rq->errors |= ERROR_MAX; idescsi_end_request(drive, 0, 0); @@ -319,9 +325,9 @@ static int idescsi_expiry(ide_drive_t *drive) idescsi_scsi_t *scsi = drive_to_idescsi(drive); struct ide_atapi_pc *pc = scsi->pc; -#if IDESCSI_DEBUG_LOG - printk(KERN_WARNING "idescsi_expiry called for %lu at %lu\n", pc->scsi_cmd->serial_number, jiffies); -#endif + debug_log("%s called for %lu at %lu\n", __func__, + pc->scsi_cmd->serial_number, jiffies); + pc->flags |= PC_FLAG_TIMEDOUT; return 0; /* we do not want the ide subsystem to retry */ @@ -341,15 +347,11 @@ static ide_startstop_t idescsi_pc_intr (ide_drive_t *drive) u16 bcount; u8 stat, ireason; -#if IDESCSI_DEBUG_LOG - printk (KERN_INFO "ide-scsi: Reached idescsi_pc_intr interrupt handler\n"); -#endif /* IDESCSI_DEBUG_LOG */ + debug_log("Reached %s interrupt handler\n", __func__); if (pc->flags & PC_FLAG_TIMEDOUT) { -#if IDESCSI_DEBUG_LOG - printk(KERN_WARNING "idescsi_pc_intr: got timed out packet %lu at %lu\n", - pc->scsi_cmd->serial_number, jiffies); -#endif + debug_log("%s: got timed out packet %lu at %lu\n", __func__, + pc->scsi_cmd->serial_number, jiffies); /* end this request now - scsi should retry it*/ idescsi_end_request (drive, 1, 0); return ide_stopped; @@ -359,9 +361,7 @@ static ide_startstop_t idescsi_pc_intr (ide_drive_t *drive) pc->flags |= PC_FLAG_DMA_ERROR; else pc->xferred = pc->req_xfer; -#if IDESCSI_DEBUG_LOG - printk ("ide-scsi: %s: DMA complete\n", drive->name); -#endif /* IDESCSI_DEBUG_LOG */ + debug_log("%s: DMA finished\n", drive->name); } /* Clear the interrupt */ @@ -427,9 +427,8 @@ static ide_startstop_t idescsi_pc_intr (ide_drive_t *drive) ide_set_handler(drive, &idescsi_pc_intr, get_timeout(pc), idescsi_expiry); return ide_started; } -#if IDESCSI_DEBUG_LOG - printk (KERN_NOTICE "ide-scsi: The scsi wants to send us more data than expected - allowing transfer\n"); -#endif /* IDESCSI_DEBUG_LOG */ + debug_log("The scsi wants to send us more data than " + "expected - allowing transfer\n"); } xferfunc = hwif->input_data; } else @@ -566,10 +565,10 @@ static ide_startstop_t idescsi_issue_pc(ide_drive_t *drive, */ static ide_startstop_t idescsi_do_request (ide_drive_t *drive, struct request *rq, sector_t block) { -#if IDESCSI_DEBUG_LOG - printk (KERN_INFO "dev: %s, cmd: %x, errors: %d\n", rq->rq_disk->disk_name,rq->cmd[0],rq->errors); - printk (KERN_INFO "sector: %ld, nr_sectors: %ld, current_nr_sectors: %d\n",rq->sector,rq->nr_sectors,rq->current_nr_sectors); -#endif /* IDESCSI_DEBUG_LOG */ + debug_log("dev: %s, cmd: %x, errors: %d\n", rq->rq_disk->disk_name, + rq->cmd[0], rq->errors); + debug_log("sector: %ld, nr_sectors: %ld, current_nr_sectors: %d\n", + rq->sector, rq->nr_sectors, rq->current_nr_sectors); if (blk_sense_request(rq) || blk_special_request(rq)) { return idescsi_issue_pc(drive, @@ -976,10 +975,10 @@ static int ide_scsi_probe(ide_drive_t *drive) host->max_id = 1; -#if IDESCSI_DEBUG_LOG if (drive->id->last_lun) - printk(KERN_NOTICE "%s: id->last_lun=%u\n", drive->name, drive->id->last_lun); -#endif + debug_log("%s: id->last_lun=%u\n", drive->name, + drive->id->last_lun); + if ((drive->id->last_lun & 0x7) != 7) host->max_lun = (drive->id->last_lun & 0x7) + 1; else -- 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/scsi/ide-scsi.c | 24 +++++++++++++----------- 1 file changed, 13 insertions(+), 11 deletions(-) (limited to 'drivers/scsi/ide-scsi.c') diff --git a/drivers/scsi/ide-scsi.c b/drivers/scsi/ide-scsi.c index d2dad9039e0..5b8a1931ac9 100644 --- a/drivers/scsi/ide-scsi.c +++ b/drivers/scsi/ide-scsi.c @@ -391,7 +391,7 @@ static ide_startstop_t idescsi_pc_intr (ide_drive_t *drive) ireason = hwif->INB(hwif->io_ports.nsect_addr); if (ireason & CD) { - printk(KERN_ERR "ide-scsi: CoD != 0 in idescsi_pc_intr\n"); + 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)) { @@ -406,9 +406,10 @@ static ide_startstop_t idescsi_pc_intr (ide_drive_t *drive) temp = pc->xferred + bcount; if (temp > pc->req_xfer) { if (temp > pc->buf_size) { - printk(KERN_ERR "ide-scsi: The scsi 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); temp = pc->buf_size - pc->xferred; if (temp) { if (pc->sg) @@ -417,8 +418,9 @@ static ide_startstop_t idescsi_pc_intr (ide_drive_t *drive) else hwif->input_data(drive, NULL, pc->cur_pos, temp); - printk(KERN_ERR "ide-scsi: transferred" - " %d of %d bytes\n", + printk(KERN_ERR "%s: transferred %d of " + "%d bytes\n", + drive->name, temp, bcount); } pc->xferred += temp; @@ -427,7 +429,7 @@ static ide_startstop_t idescsi_pc_intr (ide_drive_t *drive) ide_set_handler(drive, &idescsi_pc_intr, get_timeout(pc), idescsi_expiry); return ide_started; } - debug_log("The scsi wants to send us more data than " + debug_log("The device wants to send us more data than " "expected - allowing transfer\n"); } xferfunc = hwif->input_data; @@ -458,14 +460,14 @@ static ide_startstop_t idescsi_transfer_pc(ide_drive_t *drive) u8 ireason; if (ide_wait_stat(&startstop,drive,DRQ_STAT,BUSY_STAT,WAIT_READY)) { - printk(KERN_ERR "ide-scsi: 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); if ((ireason & CD) == 0 || (ireason & IO)) { - printk(KERN_ERR "ide-scsi: (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); } -- cgit v1.2.3 From f83cbc77b0d5521b4f0f591ede4870316944481a Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Tue, 15 Jul 2008 21:21:58 +0200 Subject: ide-scsi: set drive->scsi flag for devices handled by the driver This is 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/scsi/ide-scsi.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'drivers/scsi/ide-scsi.c') diff --git a/drivers/scsi/ide-scsi.c b/drivers/scsi/ide-scsi.c index 5b8a1931ac9..c9fdf60c9dc 100644 --- a/drivers/scsi/ide-scsi.c +++ b/drivers/scsi/ide-scsi.c @@ -629,6 +629,8 @@ static void ide_scsi_remove(ide_drive_t *drive) put_disk(g); ide_scsi_put(scsi); + + drive->scsi = 0; } static int ide_scsi_probe(ide_drive_t *); @@ -969,6 +971,8 @@ static int ide_scsi_probe(ide_drive_t *drive) !(host = scsi_host_alloc(&idescsi_template,sizeof(idescsi_scsi_t)))) return -ENODEV; + drive->scsi = 1; + g = alloc_disk(1 << PARTN_BITS); if (!g) goto out_host_put; @@ -1009,6 +1013,7 @@ static int ide_scsi_probe(ide_drive_t *drive) put_disk(g); out_host_put: + drive->scsi = 0; scsi_host_put(host); return err; } -- 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/scsi/ide-scsi.c | 30 ++---------------------------- 1 file changed, 2 insertions(+), 28 deletions(-) (limited to 'drivers/scsi/ide-scsi.c') diff --git a/drivers/scsi/ide-scsi.c b/drivers/scsi/ide-scsi.c index c9fdf60c9dc..d41348f2245 100644 --- a/drivers/scsi/ide-scsi.c +++ b/drivers/scsi/ide-scsi.c @@ -453,36 +453,10 @@ static ide_startstop_t idescsi_pc_intr (ide_drive_t *drive) static ide_startstop_t idescsi_transfer_pc(ide_drive_t *drive) { - ide_hwif_t *hwif = drive->hwif; idescsi_scsi_t *scsi = drive_to_idescsi(drive); - struct ide_atapi_pc *pc = scsi->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); - 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, &idescsi_pc_intr, get_timeout(pc), idescsi_expiry); - - 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, scsi->pc->c, 12); - - return ide_started; + return ide_transfer_pc(drive, scsi->pc, idescsi_pc_intr, + get_timeout(scsi->pc), idescsi_expiry); } static inline int idescsi_set_direction(struct ide_atapi_pc *pc) -- cgit v1.2.3 From 4cc196897de9e6c02cf86debc5b9f7cf1b69a214 Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Tue, 15 Jul 2008 21:21:58 +0200 Subject: ide-scsi: move idescsi_map_sg() call out from idescsi_issue_pc() Move idescsi_map_sg() call out from idescsi_issue_pc() to idescsi_do_request() as a preparation to 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/scsi/ide-scsi.c | 16 ++++++++++------ 1 file changed, 10 insertions(+), 6 deletions(-) (limited to 'drivers/scsi/ide-scsi.c') diff --git a/drivers/scsi/ide-scsi.c b/drivers/scsi/ide-scsi.c index d41348f2245..1d261298d61 100644 --- a/drivers/scsi/ide-scsi.c +++ b/drivers/scsi/ide-scsi.c @@ -514,16 +514,16 @@ static ide_startstop_t idescsi_issue_pc(ide_drive_t *drive, /* Request to transfer the entire buffer at once */ bcount = min(pc->req_xfer, 63 * 1024); - if (drive->using_dma && !idescsi_map_sg(drive, pc)) { + if ((pc->flags & PC_FLAG_DMA_OK) && drive->using_dma) { hwif->sg_mapped = 1; dma = !hwif->dma_ops->dma_setup(drive); hwif->sg_mapped = 0; } - ide_pktcmd_tf_load(drive, 0, bcount, dma); + if (!dma) + pc->flags &= ~PC_FLAG_DMA_OK; - if (dma) - pc->flags |= PC_FLAG_DMA_OK; + ide_pktcmd_tf_load(drive, 0, bcount, dma); if (test_bit(IDESCSI_DRQ_INTERRUPT, &scsi->flags)) { ide_execute_command(drive, WIN_PACKETCMD, &idescsi_transfer_pc, @@ -547,8 +547,12 @@ static ide_startstop_t idescsi_do_request (ide_drive_t *drive, struct request *r rq->sector, rq->nr_sectors, rq->current_nr_sectors); if (blk_sense_request(rq) || blk_special_request(rq)) { - return idescsi_issue_pc(drive, - (struct ide_atapi_pc *) rq->special); + struct ide_atapi_pc *pc = (struct ide_atapi_pc *)rq->special; + + if (drive->using_dma && !idescsi_map_sg(drive, pc)) + pc->flags |= PC_FLAG_DMA_OK; + + return idescsi_issue_pc(drive, pc); } blk_dump_rq_flags(rq, "ide-scsi: unsup command"); idescsi_end_request (drive, 0, 0); -- 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/scsi/ide-scsi.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'drivers/scsi/ide-scsi.c') diff --git a/drivers/scsi/ide-scsi.c b/drivers/scsi/ide-scsi.c index 1d261298d61..b7c5e839157 100644 --- a/drivers/scsi/ide-scsi.c +++ b/drivers/scsi/ide-scsi.c @@ -525,7 +525,7 @@ static ide_startstop_t idescsi_issue_pc(ide_drive_t *drive, ide_pktcmd_tf_load(drive, 0, bcount, dma); - if (test_bit(IDESCSI_DRQ_INTERRUPT, &scsi->flags)) { + if (pc->flags & PC_FLAG_DRQ_INTERRUPT) { ide_execute_command(drive, WIN_PACKETCMD, &idescsi_transfer_pc, get_timeout(pc), idescsi_expiry); return ide_started; @@ -548,6 +548,10 @@ static ide_startstop_t idescsi_do_request (ide_drive_t *drive, struct request *r if (blk_sense_request(rq) || blk_special_request(rq)) { struct ide_atapi_pc *pc = (struct ide_atapi_pc *)rq->special; + idescsi_scsi_t *scsi = drive_to_idescsi(drive); + + if (test_bit(IDESCSI_DRQ_INTERRUPT, &scsi->flags)) + pc->flags |= PC_FLAG_DRQ_INTERRUPT; if (drive->using_dma && !idescsi_map_sg(drive, pc)) pc->flags |= PC_FLAG_DMA_OK; -- 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/scsi/ide-scsi.c | 30 ++---------------------------- 1 file changed, 2 insertions(+), 28 deletions(-) (limited to 'drivers/scsi/ide-scsi.c') diff --git a/drivers/scsi/ide-scsi.c b/drivers/scsi/ide-scsi.c index b7c5e839157..32415466fbf 100644 --- a/drivers/scsi/ide-scsi.c +++ b/drivers/scsi/ide-scsi.c @@ -502,38 +502,12 @@ static ide_startstop_t idescsi_issue_pc(ide_drive_t *drive, struct ide_atapi_pc *pc) { idescsi_scsi_t *scsi = drive_to_idescsi(drive); - ide_hwif_t *hwif = drive->hwif; - u16 bcount; - u8 dma = 0; /* Set the current packet command */ scsi->pc = pc; - /* We haven't transferred any data yet */ - pc->xferred = 0; - pc->cur_pos = pc->buf; - /* Request to transfer the entire buffer at once */ - bcount = min(pc->req_xfer, 63 * 1024); - - if ((pc->flags & PC_FLAG_DMA_OK) && drive->using_dma) { - hwif->sg_mapped = 1; - dma = !hwif->dma_ops->dma_setup(drive); - hwif->sg_mapped = 0; - } - - if (!dma) - pc->flags &= ~PC_FLAG_DMA_OK; - ide_pktcmd_tf_load(drive, 0, bcount, dma); - - if (pc->flags & PC_FLAG_DRQ_INTERRUPT) { - ide_execute_command(drive, WIN_PACKETCMD, &idescsi_transfer_pc, - get_timeout(pc), idescsi_expiry); - return ide_started; - } else { - /* Issue the packet command */ - ide_execute_pkt_cmd(drive); - return idescsi_transfer_pc(drive); - } + return ide_issue_pc(drive, pc, idescsi_transfer_pc, + get_timeout(pc), idescsi_expiry); } /* -- cgit v1.2.3 From c6b2d260b5a7a5ed32aa2ce370d81183fc37eeb1 Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Tue, 15 Jul 2008 21:22:02 +0200 Subject: ide-scsi: use pc->callback * Add ide_scsi_callback() pc->callback implementation, then update idescsi_check_condition() and idescsi_queue() to setup ->callback. * Convert idescsi_pc_intr() to use pc->callback. This is a preparation for adding generic ide_pc_intr() helper. Cc: Borislav Petkov Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/scsi/ide-scsi.c | 32 ++++++++++++++++++++++---------- 1 file changed, 22 insertions(+), 10 deletions(-) (limited to 'drivers/scsi/ide-scsi.c') diff --git a/drivers/scsi/ide-scsi.c b/drivers/scsi/ide-scsi.c index 32415466fbf..c0b39b9e5c1 100644 --- a/drivers/scsi/ide-scsi.c +++ b/drivers/scsi/ide-scsi.c @@ -183,6 +183,24 @@ static void ide_scsi_hex_dump(u8 *data, int len) print_hex_dump(KERN_CONT, "", DUMP_PREFIX_NONE, 16, 1, data, len, 0); } +static int idescsi_end_request(ide_drive_t *, int, int); + +static void ide_scsi_callback(ide_drive_t *drive) +{ + idescsi_scsi_t *scsi = drive_to_idescsi(drive); + struct ide_atapi_pc *pc = scsi->pc; + + if (pc->flags & PC_FLAG_TIMEDOUT) + debug_log("%s: got timed out packet %lu at %lu\n", __func__, + pc->scsi_cmd->serial_number, jiffies); + /* end this request now - scsi should retry it*/ + else if (test_bit(IDESCSI_LOG_CMD, &scsi->log)) + printk(KERN_INFO "Packet command completed, %d bytes" + " transferred\n", pc->xferred); + + idescsi_end_request(drive, 1, 0); +} + static int idescsi_check_condition(ide_drive_t *drive, struct request *failed_cmd) { @@ -210,6 +228,7 @@ static int idescsi_check_condition(ide_drive_t *drive, rq->cmd_type = REQ_TYPE_SENSE; rq->cmd_flags |= REQ_PREEMPT; pc->timeout = jiffies + WAIT_READY; + pc->callback = ide_scsi_callback; /* NOTE! Save the failed packet command in "rq->buffer" */ rq->buffer = (void *) failed_cmd->special; pc->scsi_cmd = ((struct ide_atapi_pc *) failed_cmd->special)->scsi_cmd; @@ -222,8 +241,6 @@ static int idescsi_check_condition(ide_drive_t *drive, return 0; } -static int idescsi_end_request(ide_drive_t *, int, int); - static ide_startstop_t idescsi_atapi_error(ide_drive_t *drive, struct request *rq, u8 stat, u8 err) { @@ -350,10 +367,7 @@ static ide_startstop_t idescsi_pc_intr (ide_drive_t *drive) debug_log("Reached %s interrupt handler\n", __func__); if (pc->flags & PC_FLAG_TIMEDOUT) { - debug_log("%s: got timed out packet %lu at %lu\n", __func__, - pc->scsi_cmd->serial_number, jiffies); - /* end this request now - scsi should retry it*/ - idescsi_end_request (drive, 1, 0); + pc->callback(drive); return ide_stopped; } if (pc->flags & PC_FLAG_DMA_IN_PROGRESS) { @@ -369,14 +383,11 @@ static ide_startstop_t idescsi_pc_intr (ide_drive_t *drive) if ((stat & DRQ_STAT) == 0) { /* No more interrupts */ - if (test_bit(IDESCSI_LOG_CMD, &scsi->log)) - printk(KERN_INFO "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->flags & PC_FLAG_DMA_ERROR)) rq->errors++; - idescsi_end_request (drive, 1, 0); + pc->callback(drive); return ide_stopped; } if (pc->flags & PC_FLAG_DMA_IN_PROGRESS) { @@ -718,6 +729,7 @@ static int idescsi_queue (struct scsi_cmnd *cmd, pc->scsi_cmd = cmd; pc->done = done; pc->timeout = jiffies + cmd->timeout_per_command; + pc->callback = ide_scsi_callback; if (test_bit(IDESCSI_LOG_CMD, &scsi->log)) { printk ("ide-scsi: %s: que %lu, cmd = ", drive->name, cmd->serial_number); -- cgit v1.2.3 From cdca5c1f3b769eb2cdfc9cadc254cb74ba73c7d6 Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Tue, 15 Jul 2008 21:22:02 +0200 Subject: ide-scsi: add more debugging to idescsi_pc_intr() Add more debugging to idescsi_pc_intr() to match ide-tape's idetape_pc_intr(). While at it: * Correct the first debug message. This is a preparation for adding generic ide_pc_intr() helper. Cc: Borislav Petkov Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/scsi/ide-scsi.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) (limited to 'drivers/scsi/ide-scsi.c') diff --git a/drivers/scsi/ide-scsi.c b/drivers/scsi/ide-scsi.c index c0b39b9e5c1..ec9a5de2e75 100644 --- a/drivers/scsi/ide-scsi.c +++ b/drivers/scsi/ide-scsi.c @@ -364,7 +364,7 @@ static ide_startstop_t idescsi_pc_intr (ide_drive_t *drive) u16 bcount; u8 stat, ireason; - debug_log("Reached %s interrupt handler\n", __func__); + debug_log("Enter %s - interrupt handler\n", __func__); if (pc->flags & PC_FLAG_TIMEDOUT) { pc->callback(drive); @@ -383,10 +383,16 @@ static ide_startstop_t idescsi_pc_intr (ide_drive_t *drive) if ((stat & DRQ_STAT) == 0) { /* No more interrupts */ + debug_log("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->flags & PC_FLAG_DMA_ERROR)) + if ((stat & ERR_STAT) || (pc->flags & PC_FLAG_DMA_ERROR)) { + /* Error detected */ + debug_log("%s: I/O error\n", drive->name); + rq->errors++; + } pc->callback(drive); return ide_stopped; } @@ -457,6 +463,9 @@ static ide_startstop_t idescsi_pc_intr (ide_drive_t *drive) pc->xferred += bcount; pc->cur_pos += bcount; + debug_log("[cmd %x] transferred %d bytes on that intr.\n", + pc->c[0], bcount); + /* And set the interrupt handler again */ ide_set_handler(drive, &idescsi_pc_intr, get_timeout(pc), idescsi_expiry); return ide_started; -- cgit v1.2.3 From 55d82bfa6763d6761670d740ab3bac2f1c042d87 Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Tue, 15 Jul 2008 21:22:03 +0200 Subject: ide-{floppy,scsi}: read Status Register before stopping DMA engine Read Status Register before stopping DMA engine to match ide-tape device driver - it should be safe and shouldn't affect anything. This is a preparation for adding generic ide_pc_intr() helper. Cc: Borislav Petkov Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/scsi/ide-scsi.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) (limited to 'drivers/scsi/ide-scsi.c') diff --git a/drivers/scsi/ide-scsi.c b/drivers/scsi/ide-scsi.c index ec9a5de2e75..ada733ca672 100644 --- a/drivers/scsi/ide-scsi.c +++ b/drivers/scsi/ide-scsi.c @@ -370,6 +370,10 @@ static ide_startstop_t idescsi_pc_intr (ide_drive_t *drive) pc->callback(drive); return ide_stopped; } + + /* Clear the interrupt */ + stat = ide_read_status(drive); + if (pc->flags & PC_FLAG_DMA_IN_PROGRESS) { if (hwif->dma_ops->dma_end(drive)) pc->flags |= PC_FLAG_DMA_ERROR; @@ -378,9 +382,6 @@ static ide_startstop_t idescsi_pc_intr (ide_drive_t *drive) debug_log("%s: DMA finished\n", drive->name); } - /* Clear the interrupt */ - stat = ide_read_status(drive); - if ((stat & DRQ_STAT) == 0) { /* No more interrupts */ debug_log("Packet command completed, %d bytes transferred\n", -- 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/scsi/ide-scsi.c | 115 ++---------------------------------------------- 1 file changed, 3 insertions(+), 112 deletions(-) (limited to 'drivers/scsi/ide-scsi.c') diff --git a/drivers/scsi/ide-scsi.c b/drivers/scsi/ide-scsi.c index ada733ca672..683bce375c7 100644 --- a/drivers/scsi/ide-scsi.c +++ b/drivers/scsi/ide-scsi.c @@ -356,120 +356,11 @@ static int idescsi_expiry(ide_drive_t *drive) static ide_startstop_t idescsi_pc_intr (ide_drive_t *drive) { idescsi_scsi_t *scsi = drive_to_idescsi(drive); - ide_hwif_t *hwif = drive->hwif; struct ide_atapi_pc *pc = scsi->pc; - struct request *rq = pc->rq; - xfer_func_t *xferfunc; - unsigned int temp; - u16 bcount; - u8 stat, ireason; - - debug_log("Enter %s - interrupt handler\n", __func__); - - if (pc->flags & PC_FLAG_TIMEDOUT) { - pc->callback(drive); - return ide_stopped; - } - - /* Clear the interrupt */ - stat = ide_read_status(drive); - - if (pc->flags & PC_FLAG_DMA_IN_PROGRESS) { - if (hwif->dma_ops->dma_end(drive)) - pc->flags |= PC_FLAG_DMA_ERROR; - else - pc->xferred = pc->req_xfer; - debug_log("%s: DMA finished\n", drive->name); - } - - if ((stat & DRQ_STAT) == 0) { - /* No more interrupts */ - debug_log("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->flags & PC_FLAG_DMA_ERROR)) { - /* Error detected */ - debug_log("%s: I/O error\n", drive->name); - - rq->errors++; - } - 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); - } - 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)) { - 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); - temp = pc->buf_size - pc->xferred; - if (temp) { - if (pc->sg) - ide_scsi_io_buffers(drive, pc, - temp, 0); - else - hwif->input_data(drive, NULL, - pc->cur_pos, temp); - printk(KERN_ERR "%s: transferred %d of " - "%d bytes\n", - drive->name, - temp, bcount); - } - pc->xferred += temp; - pc->cur_pos += temp; - ide_pad_transfer(drive, 0, bcount - temp); - ide_set_handler(drive, &idescsi_pc_intr, get_timeout(pc), idescsi_expiry); - return ide_started; - } - debug_log("The device wants to send us more data than " - "expected - allowing transfer\n"); - } - xferfunc = hwif->input_data; - } else - xferfunc = hwif->output_data; - - if (pc->sg) - ide_scsi_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("[cmd %x] transferred %d bytes on that intr.\n", - pc->c[0], bcount); - /* And set the interrupt handler again */ - ide_set_handler(drive, &idescsi_pc_intr, get_timeout(pc), idescsi_expiry); - return ide_started; + return ide_pc_intr(drive, pc, idescsi_pc_intr, get_timeout(pc), + idescsi_expiry, NULL, NULL, NULL, + ide_scsi_io_buffers); } static ide_startstop_t idescsi_transfer_pc(ide_drive_t *drive) -- cgit v1.2.3