From ae86afaee6a1c77c7a06d81dcc3bf872204d3bec Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Tue, 6 Jan 2009 17:20:48 +0100 Subject: ide: use per-port IRQ handlers Use hwif instead of hwgroup as {request,free}_irq()'s cookie, teach ide_intr() to return early for non-active serialized ports, modify unexpected_intr() accordingly and then use per-port IRQ handlers instead of per-hwgroup ones. Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/ide/ide.c | 17 +---------------- 1 file changed, 1 insertion(+), 16 deletions(-) (limited to 'drivers/ide/ide.c') diff --git a/drivers/ide/ide.c b/drivers/ide/ide.c index 46a2d4ca812b..5bc2e4782a55 100644 --- a/drivers/ide/ide.c +++ b/drivers/ide/ide.c @@ -175,10 +175,6 @@ EXPORT_SYMBOL_GPL(ide_port_unregister_devices); void ide_unregister(ide_hwif_t *hwif) { - ide_hwif_t *g; - ide_hwgroup_t *hwgroup; - int irq_count = 0; - BUG_ON(in_interrupt()); BUG_ON(irqs_disabled()); @@ -191,18 +187,7 @@ void ide_unregister(ide_hwif_t *hwif) ide_proc_unregister_port(hwif); - hwgroup = hwif->hwgroup; - /* - * free the irq if we were the only hwif using it - */ - g = hwgroup->hwif; - do { - if (g->irq == hwif->irq) - ++irq_count; - g = g->next; - } while (g != hwgroup->hwif); - if (irq_count == 1) - free_irq(hwif->irq, hwgroup); + free_irq(hwif->irq, hwif); ide_remove_port_from_hwgroup(hwif); -- cgit v1.2.3 From b65fac32cfe3b2f98cd472fef400bd1c1340de23 Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Tue, 6 Jan 2009 17:20:50 +0100 Subject: ide: merge ide_hwgroup_t with ide_hwif_t (v2) * Merge ide_hwgroup_t with ide_hwif_t. * Cleanup init_irq() accordingly, then remove no longer needed ide_remove_port_from_hwgroup() and ide_ports[]. * Remove now unused HWGROUP() macro. While at it: * ide_dump_ata_error() fixups v2: * Fix ->quirk_list check in do_ide_request() (s/hwif->cur_dev/prev_port->cur_dev). Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/ide/alim15x3.c | 2 +- drivers/ide/au1xxx-ide.c | 6 +-- drivers/ide/icside.c | 2 +- drivers/ide/ide-atapi.c | 8 ++-- drivers/ide/ide-cd.c | 16 +++---- drivers/ide/ide-dma-sff.c | 4 +- drivers/ide/ide-dma.c | 2 +- drivers/ide/ide-floppy.c | 2 +- drivers/ide/ide-io.c | 117 ++++++++++++++++++++++----------------------- drivers/ide/ide-iops.c | 69 +++++++++++++------------- drivers/ide/ide-lib.c | 9 ++-- drivers/ide/ide-park.c | 16 +++---- drivers/ide/ide-pm.c | 2 +- drivers/ide/ide-probe.c | 87 +++++---------------------------- drivers/ide/ide-tape.c | 9 ++-- drivers/ide/ide-taskfile.c | 4 +- drivers/ide/ide.c | 7 +-- drivers/ide/pdc202xx_old.c | 2 +- drivers/ide/pmac.c | 2 +- drivers/ide/scc_pata.c | 4 +- drivers/ide/sgiioc4.c | 2 +- drivers/ide/tc86c001.c | 10 ++-- drivers/ide/trm290.c | 2 +- drivers/ide/tx4939ide.c | 2 +- drivers/ide/umc8672.c | 13 +++-- include/linux/ide.h | 55 ++++++++++----------- 26 files changed, 188 insertions(+), 266 deletions(-) (limited to 'drivers/ide/ide.c') diff --git a/drivers/ide/alim15x3.c b/drivers/ide/alim15x3.c index 45d2356bb725..290204e89eaf 100644 --- a/drivers/ide/alim15x3.c +++ b/drivers/ide/alim15x3.c @@ -198,7 +198,7 @@ static void ali_set_dma_mode(ide_drive_t *drive, const u8 speed) static int ali15x3_dma_setup(ide_drive_t *drive) { if (m5229_revision < 0xC2 && drive->media != ide_disk) { - if (rq_data_dir(drive->hwif->hwgroup->rq)) + if (rq_data_dir(drive->hwif->rq)) return 1; /* try PIO instead of DMA */ } return ide_dma_setup(drive); diff --git a/drivers/ide/au1xxx-ide.c b/drivers/ide/au1xxx-ide.c index 0ec8fd1e4dcb..db412bc772d1 100644 --- a/drivers/ide/au1xxx-ide.c +++ b/drivers/ide/au1xxx-ide.c @@ -213,7 +213,7 @@ static int auide_build_dmatable(ide_drive_t *drive) { int i, iswrite, count = 0; ide_hwif_t *hwif = HWIF(drive); - struct request *rq = HWGROUP(drive)->rq; + struct request *rq = hwif->rq; _auide_hwif *ahwif = &auide_hwif; struct scatterlist *sg; @@ -309,8 +309,8 @@ static void auide_dma_exec_cmd(ide_drive_t *drive, u8 command) } static int auide_dma_setup(ide_drive_t *drive) -{ - struct request *rq = HWGROUP(drive)->rq; +{ + struct request *rq = drive->hwif->rq; if (!auide_build_dmatable(drive)) { ide_map_sg(drive, rq); diff --git a/drivers/ide/icside.c b/drivers/ide/icside.c index 81f70caeb40f..72d95c99f147 100644 --- a/drivers/ide/icside.c +++ b/drivers/ide/icside.c @@ -312,7 +312,7 @@ static int icside_dma_setup(ide_drive_t *drive) ide_hwif_t *hwif = HWIF(drive); struct expansion_card *ec = ECARD_DEV(hwif->dev); struct icside_state *state = ecard_get_drvdata(ec); - struct request *rq = hwif->hwgroup->rq; + struct request *rq = hwif->rq; unsigned int dma_mode; if (rq_data_dir(rq)) diff --git a/drivers/ide/ide-atapi.c b/drivers/ide/ide-atapi.c index e8688c0f8645..d6a50d67b7db 100644 --- a/drivers/ide/ide-atapi.c +++ b/drivers/ide/ide-atapi.c @@ -243,7 +243,7 @@ EXPORT_SYMBOL_GPL(ide_retry_pc); int ide_cd_expiry(ide_drive_t *drive) { - struct request *rq = HWGROUP(drive)->rq; + struct request *rq = drive->hwif->rq; unsigned long wait = 0; debug_log("%s: rq->cmd[0]: 0x%x\n", __func__, rq->cmd[0]); @@ -294,7 +294,7 @@ static ide_startstop_t ide_pc_intr(ide_drive_t *drive) { struct ide_atapi_pc *pc = drive->pc; ide_hwif_t *hwif = drive->hwif; - struct request *rq = hwif->hwgroup->rq; + struct request *rq = hwif->rq; const struct ide_tp_ops *tp_ops = hwif->tp_ops; xfer_func_t *xferfunc; unsigned int timeout, temp; @@ -491,7 +491,7 @@ static ide_startstop_t ide_transfer_pc(ide_drive_t *drive) { struct ide_atapi_pc *uninitialized_var(pc); ide_hwif_t *hwif = drive->hwif; - struct request *rq = hwif->hwgroup->rq; + struct request *rq = hwif->rq; ide_expiry_t *expiry; unsigned int timeout; int cmd_len; @@ -580,7 +580,7 @@ ide_startstop_t ide_issue_pc(ide_drive_t *drive) if (dev_is_idecd(drive)) { tf_flags = IDE_TFLAG_OUT_NSECT | IDE_TFLAG_OUT_LBAL; - bcount = ide_cd_get_xferlen(hwif->hwgroup->rq); + bcount = ide_cd_get_xferlen(hwif->rq); expiry = ide_cd_expiry; timeout = ATAPI_WAIT_PC; diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c index 1a7410f88249..c35b64d495f5 100644 --- a/drivers/ide/ide-cd.c +++ b/drivers/ide/ide-cd.c @@ -239,7 +239,7 @@ static void cdrom_queue_request_sense(ide_drive_t *drive, void *sense, static void cdrom_end_request(ide_drive_t *drive, int uptodate) { - struct request *rq = HWGROUP(drive)->rq; + struct request *rq = drive->hwif->rq; int nsectors = rq->hard_cur_sectors; ide_debug_log(IDE_DBG_FUNC, "Call %s, cmd: 0x%x, uptodate: 0x%x, " @@ -306,8 +306,7 @@ static void ide_dump_status_no_sense(ide_drive_t *drive, const char *msg, u8 st) static int cdrom_decode_status(ide_drive_t *drive, int good_stat, int *stat_ret) { ide_hwif_t *hwif = drive->hwif; - ide_hwgroup_t *hwgroup = hwif->hwgroup; - struct request *rq = hwgroup->rq; + struct request *rq = hwif->rq; int stat, err, sense_key; /* check for errors */ @@ -502,7 +501,7 @@ end_request: blkdev_dequeue_request(rq); spin_unlock_irqrestore(q->queue_lock, flags); - hwgroup->rq = NULL; + hwif->rq = NULL; cdrom_queue_request_sense(drive, rq->sense, rq); } else @@ -525,7 +524,7 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *); static ide_startstop_t cdrom_start_packet_command(ide_drive_t *drive) { ide_hwif_t *hwif = drive->hwif; - struct request *rq = hwif->hwgroup->rq; + struct request *rq = hwif->rq; int xferlen; xferlen = ide_cd_get_xferlen(rq); @@ -567,7 +566,7 @@ static ide_startstop_t cdrom_start_packet_command(ide_drive_t *drive) static ide_startstop_t cdrom_transfer_packet_command(ide_drive_t *drive) { ide_hwif_t *hwif = drive->hwif; - struct request *rq = hwif->hwgroup->rq; + struct request *rq = hwif->rq; int cmd_len; ide_startstop_t startstop; @@ -854,8 +853,7 @@ static int cdrom_newpc_intr_dummy_cb(struct request *rq) static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive) { ide_hwif_t *hwif = drive->hwif; - ide_hwgroup_t *hwgroup = hwif->hwgroup; - struct request *rq = hwgroup->rq; + struct request *rq = hwif->rq; xfer_func_t *xferfunc; ide_expiry_t *expiry = NULL; int dma_error = 0, dma, stat, thislen, uptodate = 0; @@ -1061,7 +1059,7 @@ end_request: if (blk_end_request(rq, 0, dlen)) BUG(); - hwgroup->rq = NULL; + hwif->rq = NULL; } else { if (!uptodate) rq->cmd_flags |= REQ_FAILED; diff --git a/drivers/ide/ide-dma-sff.c b/drivers/ide/ide-dma-sff.c index f6d2d44d8a9a..623a82d1535d 100644 --- a/drivers/ide/ide-dma-sff.c +++ b/drivers/ide/ide-dma-sff.c @@ -175,7 +175,7 @@ EXPORT_SYMBOL_GPL(ide_build_dmatable); int ide_dma_setup(ide_drive_t *drive) { ide_hwif_t *hwif = drive->hwif; - struct request *rq = hwif->hwgroup->rq; + struct request *rq = hwif->rq; unsigned int reading = rq_data_dir(rq) ? 0 : ATA_DMA_WR; u8 mmio = (hwif->host_flags & IDE_HFLAG_MMIO) ? 1 : 0; u8 dma_stat; @@ -240,7 +240,7 @@ static int dma_timer_expiry(ide_drive_t *drive) if ((dma_stat & 0x18) == 0x18) /* BUSY Stupid Early Timer !! */ return WAIT_CMD; - hwif->hwgroup->expiry = NULL; /* one free ride for now */ + hwif->expiry = NULL; /* one free ride for now */ if (dma_stat & ATA_DMA_ERR) /* ERROR */ return -1; diff --git a/drivers/ide/ide-dma.c b/drivers/ide/ide-dma.c index fffd11717b2d..72ebab0bc755 100644 --- a/drivers/ide/ide-dma.c +++ b/drivers/ide/ide-dma.c @@ -96,7 +96,7 @@ ide_startstop_t ide_dma_intr(ide_drive_t *drive) if (OK_STAT(stat, DRIVE_READY, drive->bad_wstat | ATA_DRQ)) { if (!dma_stat) { - struct request *rq = hwif->hwgroup->rq; + struct request *rq = hwif->rq; task_end_request(drive, rq, stat); return ide_stopped; diff --git a/drivers/ide/ide-floppy.c b/drivers/ide/ide-floppy.c index 0a48e2dc53a2..3eab1c6c9b31 100644 --- a/drivers/ide/ide-floppy.c +++ b/drivers/ide/ide-floppy.c @@ -71,7 +71,7 @@ static int ide_floppy_end_request(ide_drive_t *drive, int uptodate, int nsecs) { struct ide_disk_obj *floppy = drive->driver_data; - struct request *rq = HWGROUP(drive)->rq; + struct request *rq = drive->hwif->rq; int error; ide_debug_log(IDE_DBG_FUNC, "Call %s\n", __func__); diff --git a/drivers/ide/ide-io.c b/drivers/ide/ide-io.c index 8f371821c614..6ff82d7055b9 100644 --- a/drivers/ide/ide-io.c +++ b/drivers/ide/ide-io.c @@ -88,7 +88,7 @@ static int __ide_end_request(ide_drive_t *drive, struct request *rq, ret = 0; if (ret == 0 && dequeue) - drive->hwif->hwgroup->rq = NULL; + drive->hwif->rq = NULL; return ret; } @@ -107,7 +107,7 @@ static int __ide_end_request(ide_drive_t *drive, struct request *rq, int ide_end_request (ide_drive_t *drive, int uptodate, int nr_sectors) { unsigned int nr_bytes = nr_sectors << 9; - struct request *rq = drive->hwif->hwgroup->rq; + struct request *rq = drive->hwif->rq; if (!nr_bytes) { if (blk_pc_request(rq)) @@ -160,8 +160,8 @@ EXPORT_SYMBOL_GPL(ide_end_dequeued_request); void ide_end_drive_cmd (ide_drive_t *drive, u8 stat, u8 err) { - ide_hwgroup_t *hwgroup = drive->hwif->hwgroup; - struct request *rq = hwgroup->rq; + ide_hwif_t *hwif = drive->hwif; + struct request *rq = hwif->rq; if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) { ide_task_t *task = (ide_task_t *)rq->special; @@ -186,7 +186,7 @@ void ide_end_drive_cmd (ide_drive_t *drive, u8 stat, u8 err) return; } - hwgroup->rq = NULL; + hwif->rq = NULL; rq->errors = err; @@ -321,7 +321,8 @@ ide_startstop_t ide_error (ide_drive_t *drive, const char *msg, u8 stat) err = ide_dump_status(drive, msg, stat); - if ((rq = HWGROUP(drive)->rq) == NULL) + rq = drive->hwif->rq; + if (rq == NULL) return ide_stopped; /* retry only "normal" I/O: */ @@ -654,7 +655,7 @@ kill_rq: * @timeout: time to stall for (jiffies) * * ide_stall_queue() can be used by a drive to give excess bandwidth back - * to the hwgroup by sleeping for timeout jiffies. + * to the port by sleeping for timeout jiffies. */ void ide_stall_queue (ide_drive_t *drive, unsigned long timeout) @@ -705,14 +706,13 @@ static inline void ide_unlock_host(struct ide_host *host) } /* - * Issue a new request to a drive from hwgroup + * Issue a new request to a device. */ void do_ide_request(struct request_queue *q) { ide_drive_t *drive = q->queuedata; ide_hwif_t *hwif = drive->hwif; struct ide_host *host = hwif->host; - ide_hwgroup_t *hwgroup = hwif->hwgroup; struct request *rq = NULL; ide_startstop_t startstop; @@ -734,13 +734,13 @@ void do_ide_request(struct request_queue *q) if (ide_lock_host(host, hwif)) goto plug_device_2; - spin_lock_irq(&hwgroup->lock); + spin_lock_irq(&hwif->lock); if (!ide_lock_port(hwif)) { ide_hwif_t *prev_port; repeat: prev_port = hwif->host->cur_port; - hwgroup->rq = NULL; + hwif->rq = NULL; if (drive->dev_flags & IDE_DFLAG_SLEEPING) { if (time_before(drive->sleep, jiffies)) { @@ -755,15 +755,15 @@ repeat: * set nIEN for previous port, drives in the * quirk_list may not like intr setups/cleanups */ - if (prev_port && hwgroup->cur_dev->quirk_list == 0) + if (prev_port && prev_port->cur_dev->quirk_list == 0) prev_port->tp_ops->set_irq(prev_port, 0); hwif->host->cur_port = hwif; } - hwgroup->cur_dev = drive; + hwif->cur_dev = drive; drive->dev_flags &= ~(IDE_DFLAG_SLEEPING | IDE_DFLAG_PARKED); - spin_unlock_irq(&hwgroup->lock); + spin_unlock_irq(&hwif->lock); spin_lock_irq(q->queue_lock); /* * we know that the queue isn't empty, but this can happen @@ -771,7 +771,7 @@ repeat: */ rq = elv_next_request(drive->queue); spin_unlock_irq(q->queue_lock); - spin_lock_irq(&hwgroup->lock); + spin_lock_irq(&hwif->lock); if (!rq) { ide_unlock_port(hwif); @@ -799,25 +799,25 @@ repeat: goto plug_device; } - hwgroup->rq = rq; + hwif->rq = rq; - spin_unlock_irq(&hwgroup->lock); + spin_unlock_irq(&hwif->lock); startstop = start_request(drive, rq); - spin_lock_irq(&hwgroup->lock); + spin_lock_irq(&hwif->lock); if (startstop == ide_stopped) goto repeat; } else goto plug_device; out: - spin_unlock_irq(&hwgroup->lock); + spin_unlock_irq(&hwif->lock); if (rq == NULL) ide_unlock_host(host); spin_lock_irq(q->queue_lock); return; plug_device: - spin_unlock_irq(&hwgroup->lock); + spin_unlock_irq(&hwif->lock); ide_unlock_host(host); plug_device_2: spin_lock_irq(q->queue_lock); @@ -827,7 +827,7 @@ plug_device_2: } /* - * un-busy the hwgroup etc, and clear any pending DMA status. we want to + * un-busy the port etc, and clear any pending DMA status. we want to * retry the current request in pio mode instead of risking tossing it * all away */ @@ -864,12 +864,11 @@ static ide_startstop_t ide_dma_timeout_retry(ide_drive_t *drive, int error) * un-busy drive etc and make sure request is sane */ - rq = HWGROUP(drive)->rq; - + rq = hwif->rq; if (!rq) goto out; - HWGROUP(drive)->rq = NULL; + hwif->rq = NULL; rq->errors = 0; @@ -897,7 +896,7 @@ static void ide_plug_device(ide_drive_t *drive) /** * ide_timer_expiry - handle lack of an IDE interrupt - * @data: timer callback magic (hwgroup) + * @data: timer callback magic (hwif) * * An IDE command has timed out before the expected drive return * occurred. At this point we attempt to clean up the current @@ -911,19 +910,18 @@ static void ide_plug_device(ide_drive_t *drive) void ide_timer_expiry (unsigned long data) { - ide_hwgroup_t *hwgroup = (ide_hwgroup_t *) data; - ide_hwif_t *uninitialized_var(hwif); + ide_hwif_t *hwif = (ide_hwif_t *)data; ide_drive_t *uninitialized_var(drive); ide_handler_t *handler; - ide_expiry_t *expiry; unsigned long flags; unsigned long wait = -1; int plug_device = 0; - spin_lock_irqsave(&hwgroup->lock, flags); + spin_lock_irqsave(&hwif->lock, flags); + + handler = hwif->handler; - if (((handler = hwgroup->handler) == NULL) || - (hwgroup->req_gen != hwgroup->req_gen_timer)) { + if (handler == NULL || hwif->req_gen != hwif->req_gen_timer) { /* * Either a marginal timeout occurred * (got the interrupt just as timer expired), @@ -931,38 +929,39 @@ void ide_timer_expiry (unsigned long data) * Either way, we don't really want to complain about anything. */ } else { - drive = hwgroup->cur_dev; + drive = hwif->cur_dev; if (!drive) { printk(KERN_ERR "%s: ->cur_dev was NULL\n", __func__); - hwgroup->handler = NULL; + hwif->handler = NULL; } else { + ide_expiry_t *expiry = hwif->expiry; ide_startstop_t startstop = ide_stopped; - if ((expiry = hwgroup->expiry) != NULL) { + if (expiry) { /* continue */ if ((wait = expiry(drive)) > 0) { /* reset timer */ - hwgroup->timer.expires = jiffies + wait; - hwgroup->req_gen_timer = hwgroup->req_gen; - add_timer(&hwgroup->timer); - spin_unlock_irqrestore(&hwgroup->lock, flags); + hwif->timer.expires = jiffies + wait; + hwif->req_gen_timer = hwif->req_gen; + add_timer(&hwif->timer); + spin_unlock_irqrestore(&hwif->lock, flags); return; } } - hwgroup->handler = NULL; + hwif->handler = NULL; /* * We need to simulate a real interrupt when invoking * the handler() function, which means we need to * globally mask the specific IRQ: */ - spin_unlock(&hwgroup->lock); + spin_unlock(&hwif->lock); hwif = HWIF(drive); /* disable_irq_nosync ?? */ disable_irq(hwif->irq); /* local CPU only, * as if we were handling an interrupt */ local_irq_disable(); - if (hwgroup->polling) { + if (hwif->polling) { startstop = handler(drive); } else if (drive_is_ready(drive)) { if (drive->waiting_for_dma) @@ -978,7 +977,7 @@ void ide_timer_expiry (unsigned long data) ide_error(drive, "irq timeout", hwif->tp_ops->read_status(hwif)); } - spin_lock_irq(&hwgroup->lock); + spin_lock_irq(&hwif->lock); enable_irq(hwif->irq); if (startstop == ide_stopped) { ide_unlock_port(hwif); @@ -986,7 +985,7 @@ void ide_timer_expiry (unsigned long data) } } } - spin_unlock_irqrestore(&hwgroup->lock, flags); + spin_unlock_irqrestore(&hwif->lock, flags); if (plug_device) { ide_unlock_host(hwif->host); @@ -1052,7 +1051,7 @@ static void unexpected_intr(int irq, ide_hwif_t *hwif) * places * * hwif is the interface in the group currently performing - * a command. hwgroup->cur_dev is the drive and hwgroup->handler is + * a command. hwif->cur_dev is the drive and hwif->handler is * the IRQ handler to call. As we issue a command the handlers * step through multiple states, reassigning the handler to the * next step in the process. Unlike a smart SCSI controller IDE @@ -1063,13 +1062,12 @@ static void unexpected_intr(int irq, ide_hwif_t *hwif) * * The handler eventually returns ide_stopped to indicate the * request completed. At this point we issue the next request - * on the hwgroup and the process begins again. + * on the port and the process begins again. */ - + irqreturn_t ide_intr (int irq, void *dev_id) { ide_hwif_t *hwif = (ide_hwif_t *)dev_id; - ide_hwgroup_t *hwgroup = hwif->hwgroup; ide_drive_t *uninitialized_var(drive); ide_handler_t *handler; unsigned long flags; @@ -1082,12 +1080,14 @@ irqreturn_t ide_intr (int irq, void *dev_id) goto out_early; } - spin_lock_irqsave(&hwgroup->lock, flags); + spin_lock_irqsave(&hwif->lock, flags); if (!ide_ack_intr(hwif)) goto out; - if ((handler = hwgroup->handler) == NULL || hwgroup->polling) { + handler = hwif->handler; + + if (handler == NULL || hwif->polling) { /* * Not expecting an interrupt from this drive. * That means this could be: @@ -1124,7 +1124,7 @@ irqreturn_t ide_intr (int irq, void *dev_id) goto out; } - drive = hwgroup->cur_dev; + drive = hwif->cur_dev; if (!drive) { /* * This should NEVER happen, and there isn't much @@ -1145,10 +1145,10 @@ irqreturn_t ide_intr (int irq, void *dev_id) */ goto out; - hwgroup->handler = NULL; - hwgroup->req_gen++; - del_timer(&hwgroup->timer); - spin_unlock(&hwgroup->lock); + hwif->handler = NULL; + hwif->req_gen++; + del_timer(&hwif->timer); + spin_unlock(&hwif->lock); if (hwif->port_ops && hwif->port_ops->clear_irq) hwif->port_ops->clear_irq(drive); @@ -1159,7 +1159,7 @@ irqreturn_t ide_intr (int irq, void *dev_id) /* service this interrupt, may set handler for next interrupt */ startstop = handler(drive); - spin_lock_irq(&hwgroup->lock); + spin_lock_irq(&hwif->lock); /* * Note that handler() may have set things up for another * interrupt to occur soon, but it cannot happen until @@ -1168,7 +1168,7 @@ irqreturn_t ide_intr (int irq, void *dev_id) * won't allow another of the same (on any CPU) until we return. */ if (startstop == ide_stopped) { - if (hwgroup->handler == NULL) { /* paranoia */ + if (hwif->handler == NULL) { /* paranoia */ ide_unlock_port(hwif); plug_device = 1; } else @@ -1178,7 +1178,7 @@ irqreturn_t ide_intr (int irq, void *dev_id) out_handled: irq_ret = IRQ_HANDLED; out: - spin_unlock_irqrestore(&hwgroup->lock, flags); + spin_unlock_irqrestore(&hwif->lock, flags); out_early: if (plug_device) { ide_unlock_host(hwif->host); @@ -1205,11 +1205,10 @@ out_early: void ide_do_drive_cmd(ide_drive_t *drive, struct request *rq) { - ide_hwgroup_t *hwgroup = drive->hwif->hwgroup; struct request_queue *q = drive->queue; unsigned long flags; - hwgroup->rq = NULL; + drive->hwif->rq = NULL; spin_lock_irqsave(q->queue_lock, flags); __elv_add_request(q, rq, ELEVATOR_INSERT_FRONT, 0); diff --git a/drivers/ide/ide-iops.c b/drivers/ide/ide-iops.c index ad8bd6539283..b92304d0e79a 100644 --- a/drivers/ide/ide-iops.c +++ b/drivers/ide/ide-iops.c @@ -822,25 +822,25 @@ int ide_config_drive_speed(ide_drive_t *drive, u8 speed) static void __ide_set_handler (ide_drive_t *drive, ide_handler_t *handler, unsigned int timeout, ide_expiry_t *expiry) { - ide_hwgroup_t *hwgroup = HWGROUP(drive); - - BUG_ON(hwgroup->handler); - hwgroup->handler = handler; - hwgroup->expiry = expiry; - hwgroup->timer.expires = jiffies + timeout; - hwgroup->req_gen_timer = hwgroup->req_gen; - add_timer(&hwgroup->timer); + ide_hwif_t *hwif = drive->hwif; + + BUG_ON(hwif->handler); + hwif->handler = handler; + hwif->expiry = expiry; + hwif->timer.expires = jiffies + timeout; + hwif->req_gen_timer = hwif->req_gen; + add_timer(&hwif->timer); } void ide_set_handler (ide_drive_t *drive, ide_handler_t *handler, unsigned int timeout, ide_expiry_t *expiry) { - ide_hwgroup_t *hwgroup = drive->hwif->hwgroup; + ide_hwif_t *hwif = drive->hwif; unsigned long flags; - spin_lock_irqsave(&hwgroup->lock, flags); + spin_lock_irqsave(&hwif->lock, flags); __ide_set_handler(drive, handler, timeout, expiry); - spin_unlock_irqrestore(&hwgroup->lock, flags); + spin_unlock_irqrestore(&hwif->lock, flags); } EXPORT_SYMBOL(ide_set_handler); @@ -863,10 +863,9 @@ void ide_execute_command(ide_drive_t *drive, u8 cmd, ide_handler_t *handler, unsigned timeout, ide_expiry_t *expiry) { ide_hwif_t *hwif = drive->hwif; - ide_hwgroup_t *hwgroup = hwif->hwgroup; unsigned long flags; - spin_lock_irqsave(&hwgroup->lock, flags); + spin_lock_irqsave(&hwif->lock, flags); __ide_set_handler(drive, handler, timeout, expiry); hwif->tp_ops->exec_command(hwif, cmd); /* @@ -876,26 +875,25 @@ void ide_execute_command(ide_drive_t *drive, u8 cmd, ide_handler_t *handler, * FIXME: we could skip this delay with care on non shared devices */ ndelay(400); - spin_unlock_irqrestore(&hwgroup->lock, flags); + spin_unlock_irqrestore(&hwif->lock, flags); } EXPORT_SYMBOL(ide_execute_command); void ide_execute_pkt_cmd(ide_drive_t *drive) { ide_hwif_t *hwif = drive->hwif; - ide_hwgroup_t *hwgroup = hwif->hwgroup; unsigned long flags; - spin_lock_irqsave(&hwgroup->lock, flags); + spin_lock_irqsave(&hwif->lock, flags); hwif->tp_ops->exec_command(hwif, ATA_CMD_PACKET); ndelay(400); - spin_unlock_irqrestore(&hwgroup->lock, flags); + spin_unlock_irqrestore(&hwif->lock, flags); } EXPORT_SYMBOL_GPL(ide_execute_pkt_cmd); static inline void ide_complete_drive_reset(ide_drive_t *drive, int err) { - struct request *rq = drive->hwif->hwgroup->rq; + struct request *rq = drive->hwif->rq; if (rq && blk_special_request(rq) && rq->cmd[0] == REQ_DRIVE_RESET) ide_end_request(drive, err ? err : 1, 0); @@ -913,7 +911,6 @@ static ide_startstop_t do_reset1 (ide_drive_t *, int); static ide_startstop_t atapi_reset_pollfunc (ide_drive_t *drive) { ide_hwif_t *hwif = drive->hwif; - ide_hwgroup_t *hwgroup = hwif->hwgroup; u8 stat; SELECT_DRIVE(drive); @@ -923,20 +920,20 @@ static ide_startstop_t atapi_reset_pollfunc (ide_drive_t *drive) if (OK_STAT(stat, 0, ATA_BUSY)) printk("%s: ATAPI reset complete\n", drive->name); else { - if (time_before(jiffies, hwgroup->poll_timeout)) { + if (time_before(jiffies, hwif->poll_timeout)) { ide_set_handler(drive, &atapi_reset_pollfunc, HZ/20, NULL); /* continue polling */ return ide_started; } /* end of polling */ - hwgroup->polling = 0; + hwif->polling = 0; printk("%s: ATAPI reset timed-out, status=0x%02x\n", drive->name, stat); /* do it the old fashioned way */ return do_reset1(drive, 1); } /* done polling */ - hwgroup->polling = 0; + hwif->polling = 0; ide_complete_drive_reset(drive, 0); return ide_stopped; } @@ -968,7 +965,6 @@ static void ide_reset_report_error(ide_hwif_t *hwif, u8 err) */ static ide_startstop_t reset_pollfunc (ide_drive_t *drive) { - ide_hwgroup_t *hwgroup = HWGROUP(drive); ide_hwif_t *hwif = HWIF(drive); const struct ide_port_ops *port_ops = hwif->port_ops; u8 tmp; @@ -986,7 +982,7 @@ static ide_startstop_t reset_pollfunc (ide_drive_t *drive) tmp = hwif->tp_ops->read_status(hwif); if (!OK_STAT(tmp, 0, ATA_BUSY)) { - if (time_before(jiffies, hwgroup->poll_timeout)) { + if (time_before(jiffies, hwif->poll_timeout)) { ide_set_handler(drive, &reset_pollfunc, HZ/20, NULL); /* continue polling */ return ide_started; @@ -1007,7 +1003,7 @@ static ide_startstop_t reset_pollfunc (ide_drive_t *drive) } } out: - hwgroup->polling = 0; /* done polling */ + hwif->polling = 0; /* done polling */ ide_complete_drive_reset(drive, err); return ide_stopped; } @@ -1081,7 +1077,6 @@ static void pre_reset(ide_drive_t *drive) static ide_startstop_t do_reset1 (ide_drive_t *drive, int do_not_try_atapi) { ide_hwif_t *hwif = drive->hwif; - ide_hwgroup_t *hwgroup = hwif->hwgroup; struct ide_io_ports *io_ports = &hwif->io_ports; const struct ide_tp_ops *tp_ops = hwif->tp_ops; const struct ide_port_ops *port_ops; @@ -1089,10 +1084,10 @@ static ide_startstop_t do_reset1 (ide_drive_t *drive, int do_not_try_atapi) unsigned int unit; DEFINE_WAIT(wait); - spin_lock_irqsave(&hwgroup->lock, flags); + spin_lock_irqsave(&hwif->lock, flags); /* We must not reset with running handlers */ - BUG_ON(hwgroup->handler != NULL); + BUG_ON(hwif->handler != NULL); /* For an ATAPI device, first try an ATAPI SRST. */ if (drive->media != ide_disk && !do_not_try_atapi) { @@ -1101,10 +1096,10 @@ static ide_startstop_t do_reset1 (ide_drive_t *drive, int do_not_try_atapi) udelay (20); tp_ops->exec_command(hwif, ATA_CMD_DEV_RESET); ndelay(400); - hwgroup->poll_timeout = jiffies + WAIT_WORSTCASE; - hwgroup->polling = 1; + hwif->poll_timeout = jiffies + WAIT_WORSTCASE; + hwif->polling = 1; __ide_set_handler(drive, &atapi_reset_pollfunc, HZ/20, NULL); - spin_unlock_irqrestore(&hwgroup->lock, flags); + spin_unlock_irqrestore(&hwif->lock, flags); return ide_started; } @@ -1127,9 +1122,9 @@ static ide_startstop_t do_reset1 (ide_drive_t *drive, int do_not_try_atapi) if (time_before_eq(timeout, now)) break; - spin_unlock_irqrestore(&hwgroup->lock, flags); + spin_unlock_irqrestore(&hwif->lock, flags); timeout = schedule_timeout_uninterruptible(timeout - now); - spin_lock_irqsave(&hwgroup->lock, flags); + spin_lock_irqsave(&hwif->lock, flags); } while (timeout); finish_wait(&ide_park_wq, &wait); @@ -1141,7 +1136,7 @@ static ide_startstop_t do_reset1 (ide_drive_t *drive, int do_not_try_atapi) pre_reset(&hwif->drives[unit]); if (io_ports->ctl_addr == 0) { - spin_unlock_irqrestore(&hwgroup->lock, flags); + spin_unlock_irqrestore(&hwif->lock, flags); ide_complete_drive_reset(drive, -ENXIO); return ide_stopped; } @@ -1164,8 +1159,8 @@ static ide_startstop_t do_reset1 (ide_drive_t *drive, int do_not_try_atapi) tp_ops->set_irq(hwif, drive->quirk_list == 2); /* more than enough time */ udelay(10); - hwgroup->poll_timeout = jiffies + WAIT_WORSTCASE; - hwgroup->polling = 1; + hwif->poll_timeout = jiffies + WAIT_WORSTCASE; + hwif->polling = 1; __ide_set_handler(drive, &reset_pollfunc, HZ/20, NULL); /* @@ -1177,7 +1172,7 @@ static ide_startstop_t do_reset1 (ide_drive_t *drive, int do_not_try_atapi) if (port_ops && port_ops->resetproc) port_ops->resetproc(drive); - spin_unlock_irqrestore(&hwgroup->lock, flags); + spin_unlock_irqrestore(&hwif->lock, flags); return ide_started; } diff --git a/drivers/ide/ide-lib.c b/drivers/ide/ide-lib.c index 9f6e33d8a8b2..09526a0de734 100644 --- a/drivers/ide/ide-lib.c +++ b/drivers/ide/ide-lib.c @@ -273,7 +273,7 @@ int ide_set_xfer_rate(ide_drive_t *drive, u8 rate) static void ide_dump_opcode(ide_drive_t *drive) { - struct request *rq = drive->hwif->hwgroup->rq; + struct request *rq = drive->hwif->rq; ide_task_t *task = NULL; if (!rq) @@ -346,10 +346,13 @@ static void ide_dump_ata_error(ide_drive_t *drive, u8 err) printk(KERN_CONT "}"); if ((err & (ATA_BBK | ATA_ABORTED)) == ATA_BBK || (err & (ATA_UNC | ATA_IDNF | ATA_AMNF))) { + struct request *rq = drive->hwif->rq; + ide_dump_sector(drive); - if (HWGROUP(drive) && HWGROUP(drive)->rq) + + if (rq) printk(KERN_CONT ", sector=%llu", - (unsigned long long)HWGROUP(drive)->rq->sector); + (unsigned long long)rq->sector); } printk(KERN_CONT "\n"); } diff --git a/drivers/ide/ide-park.c b/drivers/ide/ide-park.c index 678454ac2483..c875a957596c 100644 --- a/drivers/ide/ide-park.c +++ b/drivers/ide/ide-park.c @@ -7,22 +7,22 @@ DECLARE_WAIT_QUEUE_HEAD(ide_park_wq); static void issue_park_cmd(ide_drive_t *drive, unsigned long timeout) { - ide_hwgroup_t *hwgroup = drive->hwif->hwgroup; + ide_hwif_t *hwif = drive->hwif; struct request_queue *q = drive->queue; struct request *rq; int rc; timeout += jiffies; - spin_lock_irq(&hwgroup->lock); + spin_lock_irq(&hwif->lock); if (drive->dev_flags & IDE_DFLAG_PARKED) { int reset_timer = time_before(timeout, drive->sleep); int start_queue = 0; drive->sleep = timeout; wake_up_all(&ide_park_wq); - if (reset_timer && del_timer(&hwgroup->timer)) + if (reset_timer && del_timer(&hwif->timer)) start_queue = 1; - spin_unlock_irq(&hwgroup->lock); + spin_unlock_irq(&hwif->lock); if (start_queue) { spin_lock_irq(q->queue_lock); @@ -31,7 +31,7 @@ static void issue_park_cmd(ide_drive_t *drive, unsigned long timeout) } return; } - spin_unlock_irq(&hwgroup->lock); + spin_unlock_irq(&hwif->lock); rq = blk_get_request(q, READ, __GFP_WAIT); rq->cmd[0] = REQ_PARK_HEADS; @@ -64,21 +64,21 @@ ssize_t ide_park_show(struct device *dev, struct device_attribute *attr, char *buf) { ide_drive_t *drive = to_ide_device(dev); - ide_hwgroup_t *hwgroup = drive->hwif->hwgroup; + ide_hwif_t *hwif = drive->hwif; unsigned long now; unsigned int msecs; if (drive->dev_flags & IDE_DFLAG_NO_UNLOAD) return -EOPNOTSUPP; - spin_lock_irq(&hwgroup->lock); + spin_lock_irq(&hwif->lock); now = jiffies; if (drive->dev_flags & IDE_DFLAG_PARKED && time_after(drive->sleep, now)) msecs = jiffies_to_msecs(drive->sleep - now); else msecs = 0; - spin_unlock_irq(&hwgroup->lock); + spin_unlock_irq(&hwif->lock); return snprintf(buf, 20, "%u\n", msecs); } diff --git a/drivers/ide/ide-pm.c b/drivers/ide/ide-pm.c index 8282c6086e6a..abb84a2dd821 100644 --- a/drivers/ide/ide-pm.c +++ b/drivers/ide/ide-pm.c @@ -194,7 +194,7 @@ void ide_complete_pm_request(ide_drive_t *drive, struct request *rq) } spin_unlock_irqrestore(q->queue_lock, flags); - drive->hwif->hwgroup->rq = NULL; + drive->hwif->rq = NULL; if (blk_end_request(rq, 0, 0)) BUG(); diff --git a/drivers/ide/ide-probe.c b/drivers/ide/ide-probe.c index 68f3c87b8284..e953b70706c2 100644 --- a/drivers/ide/ide-probe.c +++ b/drivers/ide/ide-probe.c @@ -949,79 +949,20 @@ static int ide_port_setup_devices(ide_hwif_t *hwif) return j; } -static ide_hwif_t *ide_ports[MAX_HWIFS]; - -void ide_remove_port_from_hwgroup(ide_hwif_t *hwif) -{ - ide_hwgroup_t *hwgroup = hwif->hwgroup; - - ide_ports[hwif->index] = NULL; - - spin_lock_irq(&hwgroup->lock); - /* Free the hwgroup if we were the only member. */ - if (--hwgroup->port_count == 0) - kfree(hwgroup); - spin_unlock_irq(&hwgroup->lock); -} - /* - * This routine sets up the irq for an ide interface, and creates a new - * hwgroup for the irq/hwif if none was previously assigned. - * - * Much of the code is for correctly detecting/handling irq sharing - * and irq serialization situations. This is somewhat complex because - * it handles static as well as dynamic (PCMCIA) IDE interfaces. + * This routine sets up the IRQ for an IDE interface. */ static int init_irq (ide_hwif_t *hwif) { struct ide_io_ports *io_ports = &hwif->io_ports; - unsigned int index; - ide_hwgroup_t *hwgroup; - ide_hwif_t *match = NULL; int sa = 0; mutex_lock(&ide_cfg_mtx); - hwif->hwgroup = NULL; - - for (index = 0; index < MAX_HWIFS; index++) { - ide_hwif_t *h = ide_ports[index]; + spin_lock_init(&hwif->lock); - if (h && h->hwgroup) { /* scan only initialized ports */ - if (hwif->host->host_flags & IDE_HFLAG_SERIALIZE) { - if (hwif->host == h->host) - match = h; - } - } - } - - /* - * If we are still without a hwgroup, then form a new one - */ - if (match) { - hwgroup = match->hwgroup; - hwif->hwgroup = hwgroup; - - spin_lock_irq(&hwgroup->lock); - hwgroup->port_count++; - spin_unlock_irq(&hwgroup->lock); - } else { - hwgroup = kmalloc_node(sizeof(*hwgroup), GFP_KERNEL|__GFP_ZERO, - hwif_to_node(hwif)); - if (hwgroup == NULL) - goto out_up; - - spin_lock_init(&hwgroup->lock); - - hwif->hwgroup = hwgroup; - - hwgroup->port_count = 1; - - init_timer(&hwgroup->timer); - hwgroup->timer.function = &ide_timer_expiry; - hwgroup->timer.data = (unsigned long) hwgroup; - } - - ide_ports[hwif->index] = hwif; + init_timer(&hwif->timer); + hwif->timer.function = &ide_timer_expiry; + hwif->timer.data = (unsigned long)hwif; #if defined(__mc68000__) sa = IRQF_SHARED; @@ -1034,7 +975,7 @@ static int init_irq (ide_hwif_t *hwif) hwif->tp_ops->set_irq(hwif, 1); if (request_irq(hwif->irq, &ide_intr, sa, hwif->name, hwif)) - goto out_unlink; + goto out_up; if (!hwif->rqsize) { if ((hwif->host_flags & IDE_HFLAG_NO_LBA48) || @@ -1052,14 +993,12 @@ static int init_irq (ide_hwif_t *hwif) printk(KERN_INFO "%s at 0x%08lx on irq %d", hwif->name, io_ports->data_addr, hwif->irq); #endif /* __mc68000__ */ - if (match) - printk(KERN_CONT " (serialized with %s)", match->name); + if (hwif->host->host_flags & IDE_HFLAG_SERIALIZE) + printk(KERN_CONT " (serialized)"); printk(KERN_CONT "\n"); mutex_unlock(&ide_cfg_mtx); return 0; -out_unlink: - ide_remove_port_from_hwgroup(hwif); out_up: mutex_unlock(&ide_cfg_mtx); return 1; @@ -1140,20 +1079,20 @@ EXPORT_SYMBOL_GPL(ide_init_disk); static void drive_release_dev (struct device *dev) { ide_drive_t *drive = container_of(dev, ide_drive_t, gendev); - ide_hwgroup_t *hwgroup = drive->hwif->hwgroup; + ide_hwif_t *hwif = drive->hwif; ide_proc_unregister_device(drive); - spin_lock_irq(&hwgroup->lock); + spin_lock_irq(&hwif->lock); kfree(drive->id); drive->id = NULL; drive->dev_flags &= ~IDE_DFLAG_PRESENT; /* Messed up locking ... */ - spin_unlock_irq(&hwgroup->lock); + spin_unlock_irq(&hwif->lock); blk_cleanup_queue(drive->queue); - spin_lock_irq(&hwgroup->lock); + spin_lock_irq(&hwif->lock); drive->queue = NULL; - spin_unlock_irq(&hwgroup->lock); + spin_unlock_irq(&hwif->lock); complete(&drive->gendev_rel_comp); } diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c index 5d2aa22cd6e4..e39f2f46d982 100644 --- a/drivers/ide/ide-tape.c +++ b/drivers/ide/ide-tape.c @@ -479,7 +479,7 @@ static void ide_tape_kfree_buffer(idetape_tape_t *tape) static int idetape_end_request(ide_drive_t *drive, int uptodate, int nr_sects) { - struct request *rq = HWGROUP(drive)->rq; + struct request *rq = drive->hwif->rq; idetape_tape_t *tape = drive->driver_data; unsigned long flags; int error; @@ -531,7 +531,7 @@ static void ide_tape_callback(ide_drive_t *drive, int dsc) 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; + struct request *rq = drive->hwif->rq; int blocks = pc->xferred / tape->blk_size; tape->avg_size += blocks * tape->blk_size; @@ -576,7 +576,7 @@ static void ide_tape_callback(ide_drive_t *drive, int dsc) /* * Postpone the current request so that ide.c will be able to service requests - * from another device on the same hwgroup while we are polling for DSC. + * from another device on the same port while we are polling for DSC. */ static void idetape_postpone_request(ide_drive_t *drive) { @@ -584,7 +584,8 @@ static void idetape_postpone_request(ide_drive_t *drive) debug_log(DBG_PROCS, "Enter %s\n", __func__); - tape->postponed_rq = HWGROUP(drive)->rq; + tape->postponed_rq = drive->hwif->rq; + ide_stall_queue(drive, tape->dsc_poll_freq); } diff --git a/drivers/ide/ide-taskfile.c b/drivers/ide/ide-taskfile.c index bf4fb9d8d176..693e8d15fb78 100644 --- a/drivers/ide/ide-taskfile.c +++ b/drivers/ide/ide-taskfile.c @@ -361,7 +361,7 @@ static ide_startstop_t task_in_unexpected(ide_drive_t *drive, struct request *rq static ide_startstop_t task_in_intr(ide_drive_t *drive) { ide_hwif_t *hwif = drive->hwif; - struct request *rq = hwif->hwgroup->rq; + struct request *rq = hwif->rq; u8 stat = hwif->tp_ops->read_status(hwif); /* Error? */ @@ -395,7 +395,7 @@ static ide_startstop_t task_in_intr(ide_drive_t *drive) static ide_startstop_t task_out_intr (ide_drive_t *drive) { ide_hwif_t *hwif = drive->hwif; - struct request *rq = HWGROUP(drive)->rq; + struct request *rq = hwif->rq; u8 stat = hwif->tp_ops->read_status(hwif); if (!OK_STAT(stat, DRIVE_READY, drive->bad_wstat)) diff --git a/drivers/ide/ide.c b/drivers/ide/ide.c index 5bc2e4782a55..9e403282dfa7 100644 --- a/drivers/ide/ide.c +++ b/drivers/ide/ide.c @@ -189,8 +189,6 @@ void ide_unregister(ide_hwif_t *hwif) free_irq(hwif->irq, hwif); - ide_remove_port_from_hwgroup(hwif); - device_unregister(hwif->portdev); device_unregister(&hwif->gendev); wait_for_completion(&hwif->gendev_rel_comp); @@ -315,7 +313,6 @@ static int set_pio_mode_abuse(ide_hwif_t *hwif, u8 req_pio) static int set_pio_mode(ide_drive_t *drive, int arg) { ide_hwif_t *hwif = drive->hwif; - ide_hwgroup_t *hwgroup = hwif->hwgroup; const struct ide_port_ops *port_ops = hwif->port_ops; if (arg < 0 || arg > 255) @@ -330,9 +327,9 @@ static int set_pio_mode(ide_drive_t *drive, int arg) unsigned long flags; /* take lock for IDE_DFLAG_[NO_]UNMASK/[NO_]IO_32BIT */ - spin_lock_irqsave(&hwgroup->lock, flags); + spin_lock_irqsave(&hwif->lock, flags); port_ops->set_pio_mode(drive, arg); - spin_unlock_irqrestore(&hwgroup->lock, flags); + spin_unlock_irqrestore(&hwif->lock, flags); } else port_ops->set_pio_mode(drive, arg); } else { diff --git a/drivers/ide/pdc202xx_old.c b/drivers/ide/pdc202xx_old.c index 624e62e5cc9a..072ef70bf061 100644 --- a/drivers/ide/pdc202xx_old.c +++ b/drivers/ide/pdc202xx_old.c @@ -169,8 +169,8 @@ static void pdc202xx_dma_start(ide_drive_t *drive) if (drive->current_speed > XFER_UDMA_2) pdc_old_enable_66MHz_clock(drive->hwif); if (drive->media != ide_disk || (drive->dev_flags & IDE_DFLAG_LBA48)) { - struct request *rq = HWGROUP(drive)->rq; ide_hwif_t *hwif = HWIF(drive); + struct request *rq = hwif->rq; unsigned long high_16 = hwif->extra_base - 16; unsigned long atapi_reg = high_16 + (hwif->channel ? 0x24 : 0x20); u32 word_count = 0; diff --git a/drivers/ide/pmac.c b/drivers/ide/pmac.c index 7c481bb56fab..899b96baf215 100644 --- a/drivers/ide/pmac.c +++ b/drivers/ide/pmac.c @@ -1516,7 +1516,7 @@ pmac_ide_dma_setup(ide_drive_t *drive) ide_hwif_t *hwif = HWIF(drive); pmac_ide_hwif_t *pmif = (pmac_ide_hwif_t *)dev_get_drvdata(hwif->gendev.parent); - struct request *rq = HWGROUP(drive)->rq; + struct request *rq = hwif->rq; u8 unit = drive->dn & 1, ata4 = (pmif->kind == controller_kl_ata4); if (!pmac_ide_build_dmatable(drive, rq)) { diff --git a/drivers/ide/scc_pata.c b/drivers/ide/scc_pata.c index 0f48f9dacfa5..e966113fd569 100644 --- a/drivers/ide/scc_pata.c +++ b/drivers/ide/scc_pata.c @@ -316,7 +316,7 @@ static void scc_dma_host_set(ide_drive_t *drive, int on) static int scc_dma_setup(ide_drive_t *drive) { ide_hwif_t *hwif = drive->hwif; - struct request *rq = HWGROUP(drive)->rq; + struct request *rq = hwif->rq; unsigned int reading; u8 dma_stat; @@ -405,7 +405,7 @@ static int scc_dma_end(ide_drive_t *drive) drive->name); data_loss = 1; if (retry++) { - struct request *rq = HWGROUP(drive)->rq; + struct request *rq = hwif->rq; int unit; /* ERROR_RESET and drive->crc_count are needed * to reduce DMA transfer mode in retry process. diff --git a/drivers/ide/sgiioc4.c b/drivers/ide/sgiioc4.c index a687a7dfea6f..c68b71b1087b 100644 --- a/drivers/ide/sgiioc4.c +++ b/drivers/ide/sgiioc4.c @@ -492,7 +492,7 @@ use_pio_instead: static int sgiioc4_dma_setup(ide_drive_t *drive) { - struct request *rq = HWGROUP(drive)->rq; + struct request *rq = drive->hwif->rq; unsigned int count = 0; int ddir; diff --git a/drivers/ide/tc86c001.c b/drivers/ide/tc86c001.c index 93e2cce4b296..accb379bcad6 100644 --- a/drivers/ide/tc86c001.c +++ b/drivers/ide/tc86c001.c @@ -64,11 +64,10 @@ static int tc86c001_timer_expiry(ide_drive_t *drive) { ide_hwif_t *hwif = HWIF(drive); ide_expiry_t *expiry = ide_get_hwifdata(hwif); - ide_hwgroup_t *hwgroup = HWGROUP(drive); u8 dma_stat = inb(hwif->dma_base + ATA_DMA_STATUS); /* Restore a higher level driver's expiry handler first. */ - hwgroup->expiry = expiry; + hwif->expiry = expiry; if ((dma_stat & 5) == 1) { /* DMA active and no interrupt */ unsigned long sc_base = hwif->config_data; @@ -111,10 +110,9 @@ static int tc86c001_timer_expiry(ide_drive_t *drive) static void tc86c001_dma_start(ide_drive_t *drive) { ide_hwif_t *hwif = HWIF(drive); - ide_hwgroup_t *hwgroup = HWGROUP(drive); unsigned long sc_base = hwif->config_data; unsigned long twcr_port = sc_base + (drive->dn ? 0x06 : 0x04); - unsigned long nsectors = hwgroup->rq->nr_sectors; + unsigned long nsectors = hwif->rq->nr_sectors; /* * We have to manually load the sector count and size into @@ -125,8 +123,8 @@ static void tc86c001_dma_start(ide_drive_t *drive) outw(SECTOR_SIZE / 2, twcr_port); /* Transfer Word Count 1/2 */ /* Install our timeout expiry hook, saving the current handler... */ - ide_set_hwifdata(hwif, hwgroup->expiry); - hwgroup->expiry = &tc86c001_timer_expiry; + ide_set_hwifdata(hwif, hwif->expiry); + hwif->expiry = &tc86c001_timer_expiry; ide_dma_start(drive); } diff --git a/drivers/ide/trm290.c b/drivers/ide/trm290.c index 2a5ea90cf8b8..79a03df118d8 100644 --- a/drivers/ide/trm290.c +++ b/drivers/ide/trm290.c @@ -184,7 +184,7 @@ static void trm290_dma_exec_cmd(ide_drive_t *drive, u8 command) static int trm290_dma_setup(ide_drive_t *drive) { ide_hwif_t *hwif = drive->hwif; - struct request *rq = hwif->hwgroup->rq; + struct request *rq = hwif->rq; unsigned int count, rw; if (rq_data_dir(rq)) { diff --git a/drivers/ide/tx4939ide.c b/drivers/ide/tx4939ide.c index 4a8c5a21bd4c..1ac27ac7283b 100644 --- a/drivers/ide/tx4939ide.c +++ b/drivers/ide/tx4939ide.c @@ -293,7 +293,7 @@ static int tx4939ide_dma_setup(ide_drive_t *drive) { ide_hwif_t *hwif = drive->hwif; void __iomem *base = TX4939IDE_BASE(hwif); - struct request *rq = hwif->hwgroup->rq; + struct request *rq = hwif->rq; u8 reading; int nent; diff --git a/drivers/ide/umc8672.c b/drivers/ide/umc8672.c index e29978cf6197..0608d41fb6d0 100644 --- a/drivers/ide/umc8672.c +++ b/drivers/ide/umc8672.c @@ -106,22 +106,21 @@ static void umc_set_speeds(u8 speeds[]) static void umc_set_pio_mode(ide_drive_t *drive, const u8 pio) { - ide_hwif_t *hwif = drive->hwif; - ide_hwgroup_t *mate_hwgroup = hwif->mate ? hwif->mate->hwgroup : NULL; + ide_hwif_t *hwif = drive->hwif, *mate = hwif->mate; unsigned long uninitialized_var(flags); printk("%s: setting umc8672 to PIO mode%d (speed %d)\n", drive->name, pio, pio_to_umc[pio]); - if (mate_hwgroup) - spin_lock_irqsave(&mate_hwgroup->lock, flags); - if (mate_hwgroup && mate_hwgroup->handler) { + if (mate) + spin_lock_irqsave(&mate->lock, flags); + if (mate && mate->handler) { printk(KERN_ERR "umc8672: other interface is busy: exiting tune_umc()\n"); } else { current_speeds[drive->name[2] - 'a'] = pio_to_umc[pio]; umc_set_speeds(current_speeds); } - if (mate_hwgroup) - spin_unlock_irqrestore(&mate_hwgroup->lock, flags); + if (mate) + spin_unlock_irqrestore(&mate->lock, flags); } static const struct ide_port_ops umc8672_port_ops = { diff --git a/include/linux/ide.h b/include/linux/ide.h index 00df155b5a02..f27f130ba000 100644 --- a/include/linux/ide.h +++ b/include/linux/ide.h @@ -42,7 +42,6 @@ typedef unsigned char byte; /* used everywhere */ #define ERROR_RECAL 1 /* Recalibrate every 2nd retry */ #define HWIF(drive) ((ide_hwif_t *)((drive)->hwif)) -#define HWGROUP(drive) ((ide_hwgroup_t *)(HWIF(drive)->hwgroup)) /* * Definitions for accessing IDE controller registers @@ -750,7 +749,6 @@ struct ide_host; typedef struct hwif_s { struct hwif_s *mate; /* other hwif from same PCI chip */ - struct hwgroup_s *hwgroup; /* actually (ide_hwgroup_t *) */ struct proc_dir_entry *proc; /* /proc/ide/ directory entry */ struct ide_host *host; @@ -840,6 +838,30 @@ typedef struct hwif_s { #ifdef CONFIG_BLK_DEV_IDEACPI struct ide_acpi_hwif_link *acpidata; #endif + + /* IRQ handler, if active */ + ide_startstop_t (*handler)(ide_drive_t *); + + /* BOOL: polling active & poll_timeout field valid */ + unsigned int polling : 1; + + /* current drive */ + ide_drive_t *cur_dev; + + /* current request */ + struct request *rq; + + /* failsafe timer */ + struct timer_list timer; + /* timeout value during long polls */ + unsigned long poll_timeout; + /* queried upon timeouts */ + int (*expiry)(ide_drive_t *); + + int req_gen; + int req_gen_timer; + + spinlock_t lock; } ____cacheline_internodealigned_in_smp ide_hwif_t; #define MAX_HOST_PORTS 4 @@ -868,34 +890,6 @@ typedef int (ide_expiry_t)(ide_drive_t *); /* used by ide-cd, ide-floppy, etc. */ typedef void (xfer_func_t)(ide_drive_t *, struct request *rq, void *, unsigned); -typedef struct hwgroup_s { - /* irq handler, if active */ - ide_startstop_t (*handler)(ide_drive_t *); - - /* BOOL: polling active & poll_timeout field valid */ - unsigned int polling : 1; - - /* current drive */ - ide_drive_t *cur_dev; - - /* current request */ - struct request *rq; - - /* failsafe timer */ - struct timer_list timer; - /* timeout value during long polls */ - unsigned long poll_timeout; - /* queried upon timeouts */ - int (*expiry)(ide_drive_t *); - - int req_gen; - int req_gen_timer; - - spinlock_t lock; - - int port_count; -} ide_hwgroup_t; - typedef struct ide_driver_s ide_driver_t; extern struct mutex ide_setting_mtx; @@ -1512,7 +1506,6 @@ static inline void ide_acpi_port_init_devices(ide_hwif_t *hwif) { ; } static inline void ide_acpi_set_state(ide_hwif_t *hwif, int on) {} #endif -void ide_remove_port_from_hwgroup(ide_hwif_t *); void ide_unregister(ide_hwif_t *); void ide_register_region(struct gendisk *); -- cgit v1.2.3 From ff670e632e818535950d9e31d9d0dcfc7d5b4090 Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Tue, 6 Jan 2009 17:20:51 +0100 Subject: ide: update ide_unregister() documentation Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/ide/ide.c | 18 +++++------------- 1 file changed, 5 insertions(+), 13 deletions(-) (limited to 'drivers/ide/ide.c') diff --git a/drivers/ide/ide.c b/drivers/ide/ide.c index 9e403282dfa7..6538b63158bf 100644 --- a/drivers/ide/ide.c +++ b/drivers/ide/ide.c @@ -155,22 +155,14 @@ EXPORT_SYMBOL_GPL(ide_port_unregister_devices); * ide_unregister - free an IDE interface * @hwif: IDE interface * - * Perform the final unregister of an IDE interface. At the moment - * we don't refcount interfaces so this will also get split up. + * Perform the final unregister of an IDE interface. * * Locking: - * The caller must not hold the IDE locks - * The drive present/vanishing is not yet properly locked - * Take care with the callbacks. These have been split to avoid - * deadlocking the IDE layer. The shutdown callback is called - * before we take the lock and free resources. It is up to the - * caller to be sure there is no pending I/O here, and that - * the interface will not be reopened (present/vanishing locking - * isn't yet done BTW). After we commit to the final kill we - * call the cleanup callback with the ide locks held. + * The caller must not hold the IDE locks. * - * Unregister restores the hwif structures to the default state. - * This is raving bonkers. + * It is up to the caller to be sure there is no pending I/O here, + * and that the interface will not be reopened (present/vanishing + * locking isn't yet done BTW). */ void ide_unregister(ide_hwif_t *hwif) -- cgit v1.2.3 From b40d1b88f1001f0224c63fa2c008914514bcef33 Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Tue, 6 Jan 2009 17:20:51 +0100 Subject: ide: move ide_init_port_data() and friends to ide-probe.c * Move IDE_DEFAULT_MAX_FAILURES to . * Move ide_cfg_mtx, ide_hwif_to_major[], ide_port_init_devices_data(), ide_init_port_data(), ide_init_port_hw() and ide_unregister() to ide-probe.c from ide.c. * Make ide_unregister(), ide_init_port_data(), ide_init_port_hw() and ide_cfg_mtx static. While at it: * Remove stale ide_init_port_data() documentation and ide_lock extern. Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/ide/ide-probe.c | 135 ++++++++++++++++++++++++++++++++++++++++++++ drivers/ide/ide.c | 146 ------------------------------------------------ include/linux/ide.h | 9 +-- 3 files changed, 136 insertions(+), 154 deletions(-) (limited to 'drivers/ide/ide.c') diff --git a/drivers/ide/ide-probe.c b/drivers/ide/ide-probe.c index e953b70706c2..09ea50118e63 100644 --- a/drivers/ide/ide-probe.c +++ b/drivers/ide/ide-probe.c @@ -918,6 +918,8 @@ static int ide_init_queue(ide_drive_t *drive) return 0; } +static DEFINE_MUTEX(ide_cfg_mtx); + /* * For any present drive: * - allocate the block device queue @@ -1273,6 +1275,69 @@ static void ide_port_cable_detect(ide_hwif_t *hwif) } } +static const u8 ide_hwif_to_major[] = + { IDE0_MAJOR, IDE1_MAJOR, IDE2_MAJOR, IDE3_MAJOR, IDE4_MAJOR, + IDE5_MAJOR, IDE6_MAJOR, IDE7_MAJOR, IDE8_MAJOR, IDE9_MAJOR }; + +static void ide_port_init_devices_data(ide_hwif_t *hwif) +{ + int unit; + + for (unit = 0; unit < MAX_DRIVES; ++unit) { + ide_drive_t *drive = &hwif->drives[unit]; + u8 j = (hwif->index * MAX_DRIVES) + unit; + + memset(drive, 0, sizeof(*drive)); + + drive->media = ide_disk; + drive->select = (unit << 4) | ATA_DEVICE_OBS; + drive->hwif = hwif; + drive->ready_stat = ATA_DRDY; + drive->bad_wstat = BAD_W_STAT; + drive->special.b.recalibrate = 1; + drive->special.b.set_geometry = 1; + drive->name[0] = 'h'; + drive->name[1] = 'd'; + drive->name[2] = 'a' + j; + drive->max_failures = IDE_DEFAULT_MAX_FAILURES; + + INIT_LIST_HEAD(&drive->list); + init_completion(&drive->gendev_rel_comp); + } +} + +static void ide_init_port_data(ide_hwif_t *hwif, unsigned int index) +{ + /* bulk initialize hwif & drive info with zeros */ + memset(hwif, 0, sizeof(ide_hwif_t)); + + /* fill in any non-zero initial values */ + hwif->index = index; + hwif->major = ide_hwif_to_major[index]; + + hwif->name[0] = 'i'; + hwif->name[1] = 'd'; + hwif->name[2] = 'e'; + hwif->name[3] = '0' + index; + + init_completion(&hwif->gendev_rel_comp); + + hwif->tp_ops = &default_tp_ops; + + ide_port_init_devices_data(hwif); +} + +static void ide_init_port_hw(ide_hwif_t *hwif, hw_regs_t *hw) +{ + memcpy(&hwif->io_ports, &hw->io_ports, sizeof(hwif->io_ports)); + hwif->irq = hw->irq; + hwif->chipset = hw->chipset; + hwif->dev = hw->dev; + hwif->gendev.parent = hw->parent ? hw->parent : hw->dev; + hwif->ack_intr = hw->ack_intr; + hwif->config_data = hw->config; +} + static unsigned int ide_indexes; /** @@ -1503,6 +1568,76 @@ int ide_host_add(const struct ide_port_info *d, hw_regs_t **hws, } EXPORT_SYMBOL_GPL(ide_host_add); +static void __ide_port_unregister_devices(ide_hwif_t *hwif) +{ + int i; + + for (i = 0; i < MAX_DRIVES; i++) { + ide_drive_t *drive = &hwif->drives[i]; + + if (drive->dev_flags & IDE_DFLAG_PRESENT) { + device_unregister(&drive->gendev); + wait_for_completion(&drive->gendev_rel_comp); + } + } +} + +void ide_port_unregister_devices(ide_hwif_t *hwif) +{ + mutex_lock(&ide_cfg_mtx); + __ide_port_unregister_devices(hwif); + hwif->present = 0; + ide_port_init_devices_data(hwif); + mutex_unlock(&ide_cfg_mtx); +} +EXPORT_SYMBOL_GPL(ide_port_unregister_devices); + +/** + * ide_unregister - free an IDE interface + * @hwif: IDE interface + * + * Perform the final unregister of an IDE interface. + * + * Locking: + * The caller must not hold the IDE locks. + * + * It is up to the caller to be sure there is no pending I/O here, + * and that the interface will not be reopened (present/vanishing + * locking isn't yet done BTW). + */ + +static void ide_unregister(ide_hwif_t *hwif) +{ + BUG_ON(in_interrupt()); + BUG_ON(irqs_disabled()); + + mutex_lock(&ide_cfg_mtx); + + if (hwif->present) { + __ide_port_unregister_devices(hwif); + hwif->present = 0; + } + + ide_proc_unregister_port(hwif); + + free_irq(hwif->irq, hwif); + + device_unregister(hwif->portdev); + device_unregister(&hwif->gendev); + wait_for_completion(&hwif->gendev_rel_comp); + + /* + * Remove us from the kernel's knowledge + */ + blk_unregister_region(MKDEV(hwif->major, 0), MAX_DRIVES<sg_table); + unregister_blkdev(hwif->major, hwif->name); + + ide_release_dma_engine(hwif); + + mutex_unlock(&ide_cfg_mtx); +} + void ide_host_free(struct ide_host *host) { ide_hwif_t *hwif; diff --git a/drivers/ide/ide.c b/drivers/ide/ide.c index 6538b63158bf..c1bb0f6784a9 100644 --- a/drivers/ide/ide.c +++ b/drivers/ide/ide.c @@ -60,154 +60,8 @@ #include #include - -/* default maximum number of failures */ -#define IDE_DEFAULT_MAX_FAILURES 1 - struct class *ide_port_class; -static const u8 ide_hwif_to_major[] = { IDE0_MAJOR, IDE1_MAJOR, - IDE2_MAJOR, IDE3_MAJOR, - IDE4_MAJOR, IDE5_MAJOR, - IDE6_MAJOR, IDE7_MAJOR, - IDE8_MAJOR, IDE9_MAJOR }; - -DEFINE_MUTEX(ide_cfg_mtx); - -static void ide_port_init_devices_data(ide_hwif_t *); - -/* - * Do not even *think* about calling this! - */ -void ide_init_port_data(ide_hwif_t *hwif, unsigned int index) -{ - /* bulk initialize hwif & drive info with zeros */ - memset(hwif, 0, sizeof(ide_hwif_t)); - - /* fill in any non-zero initial values */ - hwif->index = index; - hwif->major = ide_hwif_to_major[index]; - - hwif->name[0] = 'i'; - hwif->name[1] = 'd'; - hwif->name[2] = 'e'; - hwif->name[3] = '0' + index; - - init_completion(&hwif->gendev_rel_comp); - - hwif->tp_ops = &default_tp_ops; - - ide_port_init_devices_data(hwif); -} - -static void ide_port_init_devices_data(ide_hwif_t *hwif) -{ - int unit; - - for (unit = 0; unit < MAX_DRIVES; ++unit) { - ide_drive_t *drive = &hwif->drives[unit]; - u8 j = (hwif->index * MAX_DRIVES) + unit; - - memset(drive, 0, sizeof(*drive)); - - drive->media = ide_disk; - drive->select = (unit << 4) | ATA_DEVICE_OBS; - drive->hwif = hwif; - drive->ready_stat = ATA_DRDY; - drive->bad_wstat = BAD_W_STAT; - drive->special.b.recalibrate = 1; - drive->special.b.set_geometry = 1; - drive->name[0] = 'h'; - drive->name[1] = 'd'; - drive->name[2] = 'a' + j; - drive->max_failures = IDE_DEFAULT_MAX_FAILURES; - - INIT_LIST_HEAD(&drive->list); - init_completion(&drive->gendev_rel_comp); - } -} - -static void __ide_port_unregister_devices(ide_hwif_t *hwif) -{ - int i; - - for (i = 0; i < MAX_DRIVES; i++) { - ide_drive_t *drive = &hwif->drives[i]; - - if (drive->dev_flags & IDE_DFLAG_PRESENT) { - device_unregister(&drive->gendev); - wait_for_completion(&drive->gendev_rel_comp); - } - } -} - -void ide_port_unregister_devices(ide_hwif_t *hwif) -{ - mutex_lock(&ide_cfg_mtx); - __ide_port_unregister_devices(hwif); - hwif->present = 0; - ide_port_init_devices_data(hwif); - mutex_unlock(&ide_cfg_mtx); -} -EXPORT_SYMBOL_GPL(ide_port_unregister_devices); - -/** - * ide_unregister - free an IDE interface - * @hwif: IDE interface - * - * Perform the final unregister of an IDE interface. - * - * Locking: - * The caller must not hold the IDE locks. - * - * It is up to the caller to be sure there is no pending I/O here, - * and that the interface will not be reopened (present/vanishing - * locking isn't yet done BTW). - */ - -void ide_unregister(ide_hwif_t *hwif) -{ - BUG_ON(in_interrupt()); - BUG_ON(irqs_disabled()); - - mutex_lock(&ide_cfg_mtx); - - if (hwif->present) { - __ide_port_unregister_devices(hwif); - hwif->present = 0; - } - - ide_proc_unregister_port(hwif); - - free_irq(hwif->irq, hwif); - - device_unregister(hwif->portdev); - device_unregister(&hwif->gendev); - wait_for_completion(&hwif->gendev_rel_comp); - - /* - * Remove us from the kernel's knowledge - */ - blk_unregister_region(MKDEV(hwif->major, 0), MAX_DRIVES<sg_table); - unregister_blkdev(hwif->major, hwif->name); - - ide_release_dma_engine(hwif); - - mutex_unlock(&ide_cfg_mtx); -} - -void ide_init_port_hw(ide_hwif_t *hwif, hw_regs_t *hw) -{ - memcpy(&hwif->io_ports, &hw->io_ports, sizeof(hwif->io_ports)); - hwif->irq = hw->irq; - hwif->chipset = hw->chipset; - hwif->dev = hw->dev; - hwif->gendev.parent = hw->parent ? hw->parent : hw->dev; - hwif->ack_intr = hw->ack_intr; - hwif->config_data = hw->config; -} - /* * Locks for IDE setting functionality */ diff --git a/include/linux/ide.h b/include/linux/ide.h index f27f130ba000..ee2f461882ad 100644 --- a/include/linux/ide.h +++ b/include/linux/ide.h @@ -37,6 +37,7 @@ typedef unsigned char byte; /* used everywhere */ /* * Probably not wise to fiddle with these */ +#define IDE_DEFAULT_MAX_FAILURES 1 #define ERROR_MAX 8 /* Max read/write errors per sector */ #define ERROR_RESET 3 /* Reset controller every 4th retry */ #define ERROR_RECAL 1 /* Recalibrate every 2nd retry */ @@ -184,9 +185,6 @@ typedef struct hw_regs_s { unsigned long config; } hw_regs_t; -void ide_init_port_data(struct hwif_s *, unsigned int); -void ide_init_port_hw(struct hwif_s *, hw_regs_t *); - static inline void ide_std_init_ports(hw_regs_t *hw, unsigned long io_addr, unsigned long ctl_addr) @@ -1506,8 +1504,6 @@ static inline void ide_acpi_port_init_devices(ide_hwif_t *hwif) { ; } static inline void ide_acpi_set_state(ide_hwif_t *hwif, int on) {} #endif -void ide_unregister(ide_hwif_t *); - void ide_register_region(struct gendisk *); void ide_unregister_region(struct gendisk *); @@ -1592,9 +1588,6 @@ static inline void ide_set_max_pio(ide_drive_t *drive) ide_set_pio(drive, 255); } -extern spinlock_t ide_lock; -extern struct mutex ide_cfg_mtx; - #define local_irq_set(flags) do { local_save_flags((flags)); local_irq_enable_in_hardirq(); } while (0) char *ide_media_string(ide_drive_t *); -- cgit v1.2.3 From 7f3c868ba78e486bd9d7569f884dd46d8f59bb18 Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Tue, 6 Jan 2009 17:20:53 +0100 Subject: ide: remove ide_driver_t typedef While at it: - s/struct ide_driver_s/struct ide_driver/ - use to_ide_driver() macro in ide-proc.c Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/ide/ide-cd.c | 2 +- drivers/ide/ide-cd.h | 8 ++++---- drivers/ide/ide-gd.c | 2 +- drivers/ide/ide-gd.h | 10 +++++----- drivers/ide/ide-io.c | 12 ++++++------ drivers/ide/ide-pm.c | 2 +- drivers/ide/ide-proc.c | 16 ++++++++-------- drivers/ide/ide-tape.c | 10 +++++----- drivers/ide/ide-taskfile.c | 8 ++++---- drivers/ide/ide.c | 6 +++--- include/linux/ide.h | 18 +++++++++--------- 11 files changed, 47 insertions(+), 47 deletions(-) (limited to 'drivers/ide/ide.c') diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c index c35b64d495f5..bc982dfacc36 100644 --- a/drivers/ide/ide-cd.c +++ b/drivers/ide/ide-cd.c @@ -1914,7 +1914,7 @@ static void ide_cd_release(struct kref *kref) static int ide_cd_probe(ide_drive_t *); -static ide_driver_t ide_cdrom_driver = { +static struct ide_driver ide_cdrom_driver = { .gen_driver = { .owner = THIS_MODULE, .name = "ide-cdrom", diff --git a/drivers/ide/ide-cd.h b/drivers/ide/ide-cd.h index d5ae036af00c..ac40d6cb90a2 100644 --- a/drivers/ide/ide-cd.h +++ b/drivers/ide/ide-cd.h @@ -77,10 +77,10 @@ struct atapi_toc { /* Extra per-device info for cdrom drives. */ struct cdrom_info { - ide_drive_t *drive; - ide_driver_t *driver; - struct gendisk *disk; - struct kref kref; + ide_drive_t *drive; + struct ide_driver *driver; + struct gendisk *disk; + struct kref kref; /* Buffer for table of contents. NULL if we haven't allocated a TOC buffer for this device yet. */ diff --git a/drivers/ide/ide-gd.c b/drivers/ide/ide-gd.c index b8078b3231f7..cae82b3c432a 100644 --- a/drivers/ide/ide-gd.c +++ b/drivers/ide/ide-gd.c @@ -149,7 +149,7 @@ static int ide_gd_end_request(ide_drive_t *drive, int uptodate, int nrsecs) return drive->disk_ops->end_request(drive, uptodate, nrsecs); } -static ide_driver_t ide_gd_driver = { +static struct ide_driver ide_gd_driver = { .gen_driver = { .owner = THIS_MODULE, .name = "ide-gd", diff --git a/drivers/ide/ide-gd.h b/drivers/ide/ide-gd.h index 7d3d101713e0..a86779f0756b 100644 --- a/drivers/ide/ide-gd.h +++ b/drivers/ide/ide-gd.h @@ -14,11 +14,11 @@ #endif struct ide_disk_obj { - ide_drive_t *drive; - ide_driver_t *driver; - struct gendisk *disk; - struct kref kref; - unsigned int openers; /* protected by BKL for now */ + ide_drive_t *drive; + struct ide_driver *driver; + struct gendisk *disk; + struct kref kref; + unsigned int openers; /* protected by BKL for now */ /* Last failed packet command */ struct ide_atapi_pc *failed_pc; diff --git a/drivers/ide/ide-io.c b/drivers/ide/ide-io.c index 0e2b95ec08a5..e788b3622f2e 100644 --- a/drivers/ide/ide-io.c +++ b/drivers/ide/ide-io.c @@ -199,9 +199,9 @@ EXPORT_SYMBOL(ide_end_drive_cmd); static void ide_kill_rq(ide_drive_t *drive, struct request *rq) { if (rq->rq_disk) { - ide_driver_t *drv; + struct ide_driver *drv; - drv = *(ide_driver_t **)rq->rq_disk->private_data; + drv = *(struct ide_driver **)rq->rq_disk->private_data; drv->end_request(drive, 0, 0); } else ide_end_request(drive, 0, 0); @@ -333,9 +333,9 @@ ide_startstop_t ide_error (ide_drive_t *drive, const char *msg, u8 stat) } if (rq->rq_disk) { - ide_driver_t *drv; + struct ide_driver *drv; - drv = *(ide_driver_t **)rq->rq_disk->private_data; + drv = *(struct ide_driver **)rq->rq_disk->private_data; return drv->error(drive, rq, stat, err); } else return __ide_error(drive, rq, stat, err); @@ -606,7 +606,7 @@ static ide_startstop_t start_request (ide_drive_t *drive, struct request *rq) return startstop; } if (!drive->special.all) { - ide_driver_t *drv; + struct ide_driver *drv; /* * We reset the drive so we need to issue a SETFEATURES. @@ -639,7 +639,7 @@ static ide_startstop_t start_request (ide_drive_t *drive, struct request *rq) */ return ide_special_rq(drive, rq); - drv = *(ide_driver_t **)rq->rq_disk->private_data; + drv = *(struct ide_driver **)rq->rq_disk->private_data; return drv->do_request(drive, rq, rq->sector); } diff --git a/drivers/ide/ide-pm.c b/drivers/ide/ide-pm.c index 0c206c68bbb1..4b3bf6a06b70 100644 --- a/drivers/ide/ide-pm.c +++ b/drivers/ide/ide-pm.c @@ -67,7 +67,7 @@ int generic_ide_resume(struct device *dev) blk_put_request(rq); if (err == 0 && dev->driver) { - ide_driver_t *drv = to_ide_driver(dev->driver); + struct ide_driver *drv = to_ide_driver(dev->driver); if (drv->resume) drv->resume(drive); diff --git a/drivers/ide/ide-proc.c b/drivers/ide/ide-proc.c index a14e2938e4f3..d985a9ec6bef 100644 --- a/drivers/ide/ide-proc.c +++ b/drivers/ide/ide-proc.c @@ -439,13 +439,13 @@ static int proc_ide_read_dmodel static int proc_ide_read_driver (char *page, char **start, off_t off, int count, int *eof, void *data) { - ide_drive_t *drive = (ide_drive_t *) data; - struct device *dev = &drive->gendev; - ide_driver_t *ide_drv; - int len; + ide_drive_t *drive = (ide_drive_t *)data; + struct device *dev = &drive->gendev; + struct ide_driver *ide_drv; + int len; if (dev->driver) { - ide_drv = container_of(dev->driver, ide_driver_t, gen_driver); + ide_drv = to_ide_driver(dev->driver); len = sprintf(page, "%s version %s\n", dev->driver->name, ide_drv->version); } else @@ -555,7 +555,7 @@ static void ide_remove_proc_entries(struct proc_dir_entry *dir, ide_proc_entry_t } } -void ide_proc_register_driver(ide_drive_t *drive, ide_driver_t *driver) +void ide_proc_register_driver(ide_drive_t *drive, struct ide_driver *driver) { mutex_lock(&ide_setting_mtx); drive->settings = driver->proc_devsets(drive); @@ -577,7 +577,7 @@ EXPORT_SYMBOL(ide_proc_register_driver); * Takes ide_setting_mtx. */ -void ide_proc_unregister_driver(ide_drive_t *drive, ide_driver_t *driver) +void ide_proc_unregister_driver(ide_drive_t *drive, struct ide_driver *driver) { ide_remove_proc_entries(drive->proc, driver->proc_entries(drive)); @@ -653,7 +653,7 @@ void ide_proc_unregister_port(ide_hwif_t *hwif) static int proc_print_driver(struct device_driver *drv, void *data) { - ide_driver_t *ide_drv = container_of(drv, ide_driver_t, gen_driver); + struct ide_driver *ide_drv = to_ide_driver(drv); struct seq_file *s = data; seq_printf(s, "%s version %s\n", drv->name, ide_drv->version); diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c index e39f2f46d982..fd865039bfdb 100644 --- a/drivers/ide/ide-tape.c +++ b/drivers/ide/ide-tape.c @@ -166,10 +166,10 @@ struct idetape_bh { * to an interrupt or a timer event is stored in the struct defined below. */ typedef struct ide_tape_obj { - ide_drive_t *drive; - ide_driver_t *driver; - struct gendisk *disk; - struct kref kref; + ide_drive_t *drive; + struct ide_driver *driver; + struct gendisk *disk; + struct kref kref; /* * failed_pc points to the last failed packet command, or contains @@ -2313,7 +2313,7 @@ static const struct ide_proc_devset *ide_tape_proc_devsets(ide_drive_t *drive) static int ide_tape_probe(ide_drive_t *); -static ide_driver_t idetape_driver = { +static struct ide_driver idetape_driver = { .gen_driver = { .owner = THIS_MODULE, .name = "ide-tape", diff --git a/drivers/ide/ide-taskfile.c b/drivers/ide/ide-taskfile.c index 55d451ce9b4f..16138bce84a7 100644 --- a/drivers/ide/ide-taskfile.c +++ b/drivers/ide/ide-taskfile.c @@ -309,9 +309,9 @@ static ide_startstop_t task_error(ide_drive_t *drive, struct request *rq, } if (sectors > 0) { - ide_driver_t *drv; + struct ide_driver *drv; - drv = *(ide_driver_t **)rq->rq_disk->private_data; + drv = *(struct ide_driver **)rq->rq_disk->private_data; drv->end_request(drive, 1, sectors); } } @@ -328,9 +328,9 @@ void task_end_request(ide_drive_t *drive, struct request *rq, u8 stat) } if (rq->rq_disk) { - ide_driver_t *drv; + struct ide_driver *drv; - drv = *(ide_driver_t **)rq->rq_disk->private_data;; + drv = *(struct ide_driver **)rq->rq_disk->private_data;; drv->end_request(drive, 1, rq->nr_sectors); } else ide_end_request(drive, 1, rq->nr_sectors); diff --git a/drivers/ide/ide.c b/drivers/ide/ide.c index c1bb0f6784a9..6971c285a212 100644 --- a/drivers/ide/ide.c +++ b/drivers/ide/ide.c @@ -281,7 +281,7 @@ static int ide_uevent(struct device *dev, struct kobj_uevent_env *env) static int generic_ide_probe(struct device *dev) { ide_drive_t *drive = to_ide_device(dev); - ide_driver_t *drv = to_ide_driver(dev->driver); + struct ide_driver *drv = to_ide_driver(dev->driver); return drv->probe ? drv->probe(drive) : -ENODEV; } @@ -289,7 +289,7 @@ static int generic_ide_probe(struct device *dev) static int generic_ide_remove(struct device *dev) { ide_drive_t *drive = to_ide_device(dev); - ide_driver_t *drv = to_ide_driver(dev->driver); + struct ide_driver *drv = to_ide_driver(dev->driver); if (drv->remove) drv->remove(drive); @@ -300,7 +300,7 @@ static int generic_ide_remove(struct device *dev) static void generic_ide_shutdown(struct device *dev) { ide_drive_t *drive = to_ide_device(dev); - ide_driver_t *drv = to_ide_driver(dev->driver); + struct ide_driver *drv = to_ide_driver(dev->driver); if (dev->driver && drv->shutdown) drv->shutdown(drive); diff --git a/include/linux/ide.h b/include/linux/ide.h index 545a67f1f6b5..fcbcfa2cbe75 100644 --- a/include/linux/ide.h +++ b/include/linux/ide.h @@ -437,7 +437,7 @@ struct ide_atapi_pc { }; struct ide_devset; -struct ide_driver_s; +struct ide_driver; #ifdef CONFIG_BLK_DEV_IDEACPI struct ide_acpi_drive_link; @@ -884,8 +884,6 @@ typedef int (ide_expiry_t)(ide_drive_t *); /* used by ide-cd, ide-floppy, etc. */ typedef void (xfer_func_t)(ide_drive_t *, struct request *rq, void *, unsigned); -typedef struct ide_driver_s ide_driver_t; - extern struct mutex ide_setting_mtx; /* @@ -1011,8 +1009,8 @@ void ide_proc_register_port(ide_hwif_t *); void ide_proc_port_register_devices(ide_hwif_t *); void ide_proc_unregister_device(ide_drive_t *); void ide_proc_unregister_port(ide_hwif_t *); -void ide_proc_register_driver(ide_drive_t *, ide_driver_t *); -void ide_proc_unregister_driver(ide_drive_t *, ide_driver_t *); +void ide_proc_register_driver(ide_drive_t *, struct ide_driver *); +void ide_proc_unregister_driver(ide_drive_t *, struct ide_driver *); read_proc_t proc_ide_read_capacity; read_proc_t proc_ide_read_geometry; @@ -1039,8 +1037,10 @@ static inline void ide_proc_register_port(ide_hwif_t *hwif) { ; } static inline void ide_proc_port_register_devices(ide_hwif_t *hwif) { ; } static inline void ide_proc_unregister_device(ide_drive_t *drive) { ; } static inline void ide_proc_unregister_port(ide_hwif_t *hwif) { ; } -static inline void ide_proc_register_driver(ide_drive_t *drive, ide_driver_t *driver) { ; } -static inline void ide_proc_unregister_driver(ide_drive_t *drive, ide_driver_t *driver) { ; } +static inline void ide_proc_register_driver(ide_drive_t *drive, + struct ide_driver *driver) { ; } +static inline void ide_proc_unregister_driver(ide_drive_t *drive, + struct ide_driver *driver) { ; } #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) return 0; #endif @@ -1109,7 +1109,7 @@ void ide_check_pm_state(ide_drive_t *, struct request *); * The gendriver.owner field should be set to the module owner of this driver. * The gendriver.name field should be set to the name of this driver */ -struct ide_driver_s { +struct ide_driver { const char *version; ide_startstop_t (*do_request)(ide_drive_t *, struct request *, sector_t); int (*end_request)(ide_drive_t *, int, int); @@ -1125,7 +1125,7 @@ struct ide_driver_s { #endif }; -#define to_ide_driver(drv) container_of(drv, ide_driver_t, gen_driver) +#define to_ide_driver(drv) container_of(drv, struct ide_driver, gen_driver) int ide_device_get(ide_drive_t *); void ide_device_put(ide_drive_t *); -- cgit v1.2.3 From 5e7f3a46690f7f6c9f2781c700ab4370874aa0e8 Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Tue, 6 Jan 2009 17:20:56 +0100 Subject: ide: dynamic allocation of device structures Allocate device structures dynamically instead of having them embedded in ide_hwif_t: * Remove needless zeroing of port structure from ide_init_port_data(). * Add ide_hwif_t.devices[MAX_DRIVES] (table of pointers to the devices). * Add ide_port_{alloc,free}_devices() helpers and use them respectively in ide_{host,free}_alloc(). * Convert all users of ->drives[] to use ->devices[] instead. While at it: * Use drive->dn for the slave device check in scc_pata.c. As a nice side-effect this patch cuts ~1kB (x86-32) from the resulting code size: text data bss dec hex filename 53963 1244 237 55444 d894 drivers/ide/ide-core.o.before 52981 1244 237 54462 d4be drivers/ide/ide-core.o.after Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/ide/ide-acpi.c | 10 +++---- drivers/ide/ide-iops.c | 4 +-- drivers/ide/ide-probe.c | 71 +++++++++++++++++++++++++++++++++++-------------- drivers/ide/ide-proc.c | 2 +- drivers/ide/ide.c | 2 +- drivers/ide/scc_pata.c | 5 ++-- include/linux/ide.h | 4 +-- 7 files changed, 65 insertions(+), 33 deletions(-) (limited to 'drivers/ide/ide.c') diff --git a/drivers/ide/ide-acpi.c b/drivers/ide/ide-acpi.c index f89b6ecf7d1a..fd155b8a256c 100644 --- a/drivers/ide/ide-acpi.c +++ b/drivers/ide/ide-acpi.c @@ -656,7 +656,7 @@ void ide_acpi_set_state(ide_hwif_t *hwif, int on) if (on) acpi_bus_set_power(hwif->acpidata->obj_handle, ACPI_STATE_D0); for (unit = 0; unit < MAX_DRIVES; ++unit) { - ide_drive_t *drive = &hwif->drives[unit]; + ide_drive_t *drive = hwif->devices[unit]; if (!drive->acpidata->obj_handle) drive->acpidata->obj_handle = ide_acpi_drive_get_handle(drive); @@ -711,14 +711,14 @@ void ide_acpi_port_init_devices(ide_hwif_t *hwif) * for both drives, regardless whether they are connected * or not. */ - hwif->drives[0].acpidata = &hwif->acpidata->master; - hwif->drives[1].acpidata = &hwif->acpidata->slave; + hwif->devices[0]->acpidata = &hwif->acpidata->master; + hwif->devices[1]->acpidata = &hwif->acpidata->slave; /* * Send IDENTIFY for each drive */ for (i = 0; i < MAX_DRIVES; i++) { - drive = &hwif->drives[i]; + drive = hwif->devices[i]; memset(drive->acpidata, 0, sizeof(*drive->acpidata)); @@ -745,7 +745,7 @@ void ide_acpi_port_init_devices(ide_hwif_t *hwif) ide_acpi_push_timing(hwif); for (i = 0; i < MAX_DRIVES; i++) { - drive = &hwif->drives[i]; + drive = hwif->devices[i]; if (drive->dev_flags & IDE_DFLAG_PRESENT) /* Execute ACPI startup code */ diff --git a/drivers/ide/ide-iops.c b/drivers/ide/ide-iops.c index 1bcb9484f49e..26b58d15c4e6 100644 --- a/drivers/ide/ide-iops.c +++ b/drivers/ide/ide-iops.c @@ -1111,7 +1111,7 @@ static ide_startstop_t do_reset1 (ide_drive_t *drive, int do_not_try_atapi) prepare_to_wait(&ide_park_wq, &wait, TASK_UNINTERRUPTIBLE); timeout = jiffies; for (unit = 0; unit < MAX_DRIVES; unit++) { - ide_drive_t *tdrive = &hwif->drives[unit]; + ide_drive_t *tdrive = hwif->devices[unit]; if (tdrive->dev_flags & IDE_DFLAG_PRESENT && tdrive->dev_flags & IDE_DFLAG_PARKED && @@ -1134,7 +1134,7 @@ static ide_startstop_t do_reset1 (ide_drive_t *drive, int do_not_try_atapi) * for any of the drives on this interface. */ for (unit = 0; unit < MAX_DRIVES; ++unit) - pre_reset(&hwif->drives[unit]); + pre_reset(hwif->devices[unit]); if (io_ports->ctl_addr == 0) { spin_unlock_irqrestore(&hwif->lock, flags); diff --git a/drivers/ide/ide-probe.c b/drivers/ide/ide-probe.c index 00c7e5a67bd1..006e601cafb8 100644 --- a/drivers/ide/ide-probe.c +++ b/drivers/ide/ide-probe.c @@ -463,7 +463,7 @@ static int do_probe (ide_drive_t *drive, u8 cmd) if (ide_read_device(drive) != drive->select && present == 0) { if (drive->dn & 1) { /* exit with drive0 selected */ - SELECT_DRIVE(&hwif->drives[0]); + SELECT_DRIVE(hwif->devices[0]); /* allow ATA_BUSY to assert & clear */ msleep(50); } @@ -509,7 +509,7 @@ static int do_probe (ide_drive_t *drive, u8 cmd) } if (drive->dn & 1) { /* exit with drive0 selected */ - SELECT_DRIVE(&hwif->drives[0]); + SELECT_DRIVE(hwif->devices[0]); msleep(50); /* ensure drive irq is clear */ (void)tp_ops->read_status(hwif); @@ -715,7 +715,7 @@ static int ide_port_wait_ready(ide_hwif_t *hwif) /* Now make sure both master & slave are ready */ for (unit = 0; unit < MAX_DRIVES; unit++) { - ide_drive_t *drive = &hwif->drives[unit]; + ide_drive_t *drive = hwif->devices[unit]; /* Ignore disks that we will not probe for later. */ if ((drive->dev_flags & IDE_DFLAG_NOPROBE) == 0 || @@ -733,7 +733,7 @@ static int ide_port_wait_ready(ide_hwif_t *hwif) out: /* Exit function with master reselected (let's be sane) */ if (unit) - SELECT_DRIVE(&hwif->drives[0]); + SELECT_DRIVE(hwif->devices[0]); return rc; } @@ -749,7 +749,7 @@ out: void ide_undecoded_slave(ide_drive_t *dev1) { - ide_drive_t *dev0 = &dev1->hwif->drives[0]; + ide_drive_t *dev0 = dev1->hwif->devices[0]; if ((dev1->dn & 1) == 0 || (dev0->dev_flags & IDE_DFLAG_PRESENT) == 0) return; @@ -784,8 +784,8 @@ static int ide_probe_port(ide_hwif_t *hwif) BUG_ON(hwif->present); - if ((hwif->drives[0].dev_flags & IDE_DFLAG_NOPROBE) && - (hwif->drives[1].dev_flags & IDE_DFLAG_NOPROBE)) + if ((hwif->devices[0]->dev_flags & IDE_DFLAG_NOPROBE) && + (hwif->devices[1]->dev_flags & IDE_DFLAG_NOPROBE)) return -EACCES; /* @@ -807,7 +807,7 @@ static int ide_probe_port(ide_hwif_t *hwif) * but a lot of cdrom drives are configured as single slaves. */ for (unit = 0; unit < MAX_DRIVES; ++unit) { - ide_drive_t *drive = &hwif->drives[unit]; + ide_drive_t *drive = hwif->devices[unit]; (void) probe_for_drive(drive); if (drive->dev_flags & IDE_DFLAG_PRESENT) @@ -832,7 +832,7 @@ static void ide_port_tune_devices(ide_hwif_t *hwif) int unit; for (unit = 0; unit < MAX_DRIVES; unit++) { - ide_drive_t *drive = &hwif->drives[unit]; + ide_drive_t *drive = hwif->devices[unit]; if (drive->dev_flags & IDE_DFLAG_PRESENT) { if (port_ops && port_ops->quirkproc) @@ -841,7 +841,7 @@ static void ide_port_tune_devices(ide_hwif_t *hwif) } for (unit = 0; unit < MAX_DRIVES; ++unit) { - ide_drive_t *drive = &hwif->drives[unit]; + ide_drive_t *drive = hwif->devices[unit]; if (drive->dev_flags & IDE_DFLAG_PRESENT) { ide_set_max_pio(drive); @@ -854,7 +854,7 @@ static void ide_port_tune_devices(ide_hwif_t *hwif) } for (unit = 0; unit < MAX_DRIVES; ++unit) { - ide_drive_t *drive = &hwif->drives[unit]; + ide_drive_t *drive = hwif->devices[unit]; if ((hwif->host_flags & IDE_HFLAG_NO_IO_32BIT) || drive->id[ATA_ID_DWORD_IO]) @@ -931,7 +931,7 @@ static int ide_port_setup_devices(ide_hwif_t *hwif) mutex_lock(&ide_cfg_mtx); for (i = 0; i < MAX_DRIVES; i++) { - ide_drive_t *drive = &hwif->drives[i]; + ide_drive_t *drive = hwif->devices[i]; if ((drive->dev_flags & IDE_DFLAG_PRESENT) == 0) continue; @@ -1017,7 +1017,7 @@ static struct kobject *ata_probe(dev_t dev, int *part, void *data) { ide_hwif_t *hwif = data; int unit = *part >> PARTN_BITS; - ide_drive_t *drive = &hwif->drives[unit]; + ide_drive_t *drive = hwif->devices[unit]; if ((drive->dev_flags & IDE_DFLAG_PRESENT) == 0) return NULL; @@ -1164,7 +1164,7 @@ static void hwif_register_devices(ide_hwif_t *hwif) unsigned int i; for (i = 0; i < MAX_DRIVES; i++) { - ide_drive_t *drive = &hwif->drives[i]; + ide_drive_t *drive = hwif->devices[i]; struct device *dev = &drive->gendev; int ret; @@ -1190,7 +1190,7 @@ static void ide_port_init_devices(ide_hwif_t *hwif) int i; for (i = 0; i < MAX_DRIVES; i++) { - ide_drive_t *drive = &hwif->drives[i]; + ide_drive_t *drive = hwif->devices[i]; drive->dn = i + hwif->channel * 2; @@ -1285,7 +1285,7 @@ static void ide_port_init_devices_data(ide_hwif_t *hwif) int unit; for (unit = 0; unit < MAX_DRIVES; ++unit) { - ide_drive_t *drive = &hwif->drives[unit]; + ide_drive_t *drive = hwif->devices[unit]; u8 j = (hwif->index * MAX_DRIVES) + unit; memset(drive, 0, sizeof(*drive)); @@ -1309,9 +1309,6 @@ static void ide_port_init_devices_data(ide_hwif_t *hwif) static void ide_init_port_data(ide_hwif_t *hwif, unsigned int index) { - /* bulk initialize hwif & drive info with zeros */ - memset(hwif, 0, sizeof(ide_hwif_t)); - /* fill in any non-zero initial values */ hwif->index = index; hwif->major = ide_hwif_to_major[index]; @@ -1388,6 +1385,34 @@ static void ide_free_port_slot(int idx) mutex_unlock(&ide_cfg_mtx); } +static void ide_port_free_devices(ide_hwif_t *hwif) +{ + int i; + + for (i = 0; i < MAX_DRIVES; i++) + kfree(hwif->devices[i]); +} + +static int ide_port_alloc_devices(ide_hwif_t *hwif, int node) +{ + int i; + + for (i = 0; i < MAX_DRIVES; i++) { + ide_drive_t *drive; + + drive = kzalloc_node(sizeof(*drive), GFP_KERNEL, node); + if (drive == NULL) + goto out_nomem; + + hwif->devices[i] = drive; + } + return 0; + +out_nomem: + ide_port_free_devices(hwif); + return -ENOMEM; +} + struct ide_host *ide_host_alloc(const struct ide_port_info *d, hw_regs_t **hws) { struct ide_host *host; @@ -1410,6 +1435,11 @@ struct ide_host *ide_host_alloc(const struct ide_port_info *d, hw_regs_t **hws) if (hwif == NULL) continue; + if (ide_port_alloc_devices(hwif, node) < 0) { + kfree(hwif); + continue; + } + idx = ide_find_port_slot(d); if (idx < 0) { printk(KERN_ERR "%s: no free slot for interface\n", @@ -1575,7 +1605,7 @@ static void __ide_port_unregister_devices(ide_hwif_t *hwif) int i; for (i = 0; i < MAX_DRIVES; i++) { - ide_drive_t *drive = &hwif->drives[i]; + ide_drive_t *drive = hwif->devices[i]; if (drive->dev_flags & IDE_DFLAG_PRESENT) { device_unregister(&drive->gendev); @@ -1651,6 +1681,7 @@ void ide_host_free(struct ide_host *host) if (hwif == NULL) continue; + ide_port_free_devices(hwif); ide_free_port_slot(hwif->index); kfree(hwif); } diff --git a/drivers/ide/ide-proc.c b/drivers/ide/ide-proc.c index d985a9ec6bef..1dc827fa7061 100644 --- a/drivers/ide/ide-proc.c +++ b/drivers/ide/ide-proc.c @@ -599,7 +599,7 @@ void ide_proc_port_register_devices(ide_hwif_t *hwif) char name[64]; for (d = 0; d < MAX_DRIVES; d++) { - ide_drive_t *drive = &hwif->drives[d]; + ide_drive_t *drive = hwif->devices[d]; if ((drive->dev_flags & IDE_DFLAG_PRESENT) == 0 || drive->proc) continue; diff --git a/drivers/ide/ide.c b/drivers/ide/ide.c index 6971c285a212..8a6f893d127e 100644 --- a/drivers/ide/ide.c +++ b/drivers/ide/ide.c @@ -497,7 +497,7 @@ void ide_port_apply_params(ide_hwif_t *hwif) } for (i = 0; i < MAX_DRIVES; i++) - ide_dev_apply_params(&hwif->drives[i], i); + ide_dev_apply_params(hwif->devices[i], i); } /* diff --git a/drivers/ide/scc_pata.c b/drivers/ide/scc_pata.c index 90574ab76345..841164d7d3b9 100644 --- a/drivers/ide/scc_pata.c +++ b/drivers/ide/scc_pata.c @@ -259,7 +259,7 @@ static void scc_set_dma_mode(ide_drive_t *drive, const u8 speed) unsigned long scrcst_port = ctl_base + 0x014; unsigned long udenvt_port = ctl_base + 0x018; unsigned long tdvhsel_port = ctl_base + 0x020; - int is_slave = (&hwif->drives[1] == drive); + int is_slave = drive->dn & 1; int offset, idx; unsigned long reg; unsigned long jcactsel; @@ -413,7 +413,8 @@ static int scc_dma_end(ide_drive_t *drive) if (rq) rq->errors |= ERROR_RESET; for (unit = 0; unit < MAX_DRIVES; unit++) { - ide_drive_t *drive = &hwif->drives[unit]; + ide_drive_t *drive = hwif->devices[unit]; + drive->crc_count++; } } diff --git a/include/linux/ide.h b/include/linux/ide.h index 9f6fe1fe7a6c..f00086b10be3 100644 --- a/include/linux/ide.h +++ b/include/linux/ide.h @@ -753,7 +753,7 @@ typedef struct hwif_s { unsigned long sata_scr[SATA_NR_PORTS]; - ide_drive_t drives[MAX_DRIVES]; /* drive info */ + ide_drive_t *devices[MAX_DRIVES]; u8 major; /* our major number */ u8 index; /* 0 for ide0; 1 for ide1; ... */ @@ -1600,7 +1600,7 @@ static inline int hwif_to_node(ide_hwif_t *hwif) static inline ide_drive_t *ide_get_pair_dev(ide_drive_t *drive) { - ide_drive_t *peer = &drive->hwif->drives[(drive->dn ^ 1) & 1]; + ide_drive_t *peer = drive->hwif->devices[(drive->dn ^ 1) & 1]; return (peer->dev_flags & IDE_DFLAG_PRESENT) ? peer : NULL; } -- cgit v1.2.3 From 2bd24a1cfc99d242c2cff9a6b74ca49fcaac3fb6 Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Tue, 6 Jan 2009 17:20:56 +0100 Subject: ide: add port and host iterators Add ide_port_for_each_dev() / ide_host_for_each_port() iterators and update IDE code to use them. While at it: - s/unit/i/ variable in ide_port_wait_ready(), ide_probe_port(), ide_port_tune_devices(), ide_port_init_devices_data(), do_reset1(), ide_acpi_set_state() and scc_dma_end() - s/d/i/ variable in ide_proc_port_register_devices() There should be no functional changes caused by this patch. Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/ide/ide-acpi.c | 14 +++----- drivers/ide/ide-iops.c | 11 +++--- drivers/ide/ide-probe.c | 96 ++++++++++++++++++++----------------------------- drivers/ide/ide-proc.c | 7 ++-- drivers/ide/ide.c | 5 +-- drivers/ide/scc_pata.c | 8 ++--- include/linux/ide.h | 11 ++++-- 7 files changed, 67 insertions(+), 85 deletions(-) (limited to 'drivers/ide/ide.c') diff --git a/drivers/ide/ide-acpi.c b/drivers/ide/ide-acpi.c index fd155b8a256c..2f9e941968d6 100644 --- a/drivers/ide/ide-acpi.c +++ b/drivers/ide/ide-acpi.c @@ -641,7 +641,8 @@ void ide_acpi_push_timing(ide_hwif_t *hwif) */ void ide_acpi_set_state(ide_hwif_t *hwif, int on) { - int unit; + ide_drive_t *drive; + int i; if (ide_noacpi || ide_noacpi_psx) return; @@ -655,9 +656,8 @@ void ide_acpi_set_state(ide_hwif_t *hwif, int on) /* channel first and then drives for power on and verse versa for power off */ if (on) acpi_bus_set_power(hwif->acpidata->obj_handle, ACPI_STATE_D0); - for (unit = 0; unit < MAX_DRIVES; ++unit) { - ide_drive_t *drive = hwif->devices[unit]; + ide_port_for_each_dev(i, drive, hwif) { if (!drive->acpidata->obj_handle) drive->acpidata->obj_handle = ide_acpi_drive_get_handle(drive); @@ -717,9 +717,7 @@ void ide_acpi_port_init_devices(ide_hwif_t *hwif) /* * Send IDENTIFY for each drive */ - for (i = 0; i < MAX_DRIVES; i++) { - drive = hwif->devices[i]; - + ide_port_for_each_dev(i, drive, hwif) { memset(drive->acpidata, 0, sizeof(*drive->acpidata)); if ((drive->dev_flags & IDE_DFLAG_PRESENT) == 0) @@ -744,9 +742,7 @@ void ide_acpi_port_init_devices(ide_hwif_t *hwif) ide_acpi_get_timing(hwif); ide_acpi_push_timing(hwif); - for (i = 0; i < MAX_DRIVES; i++) { - drive = hwif->devices[i]; - + ide_port_for_each_dev(i, drive, hwif) { if (drive->dev_flags & IDE_DFLAG_PRESENT) /* Execute ACPI startup code */ ide_acpi_exec_tfs(drive); diff --git a/drivers/ide/ide-iops.c b/drivers/ide/ide-iops.c index 26b58d15c4e6..1a22c31ce7ac 100644 --- a/drivers/ide/ide-iops.c +++ b/drivers/ide/ide-iops.c @@ -1081,8 +1081,9 @@ static ide_startstop_t do_reset1 (ide_drive_t *drive, int do_not_try_atapi) struct ide_io_ports *io_ports = &hwif->io_ports; const struct ide_tp_ops *tp_ops = hwif->tp_ops; const struct ide_port_ops *port_ops; + ide_drive_t *tdrive; unsigned long flags, timeout; - unsigned int unit; + int i; DEFINE_WAIT(wait); spin_lock_irqsave(&hwif->lock, flags); @@ -1110,9 +1111,7 @@ static ide_startstop_t do_reset1 (ide_drive_t *drive, int do_not_try_atapi) prepare_to_wait(&ide_park_wq, &wait, TASK_UNINTERRUPTIBLE); timeout = jiffies; - for (unit = 0; unit < MAX_DRIVES; unit++) { - ide_drive_t *tdrive = hwif->devices[unit]; - + ide_port_for_each_dev(i, tdrive, hwif) { if (tdrive->dev_flags & IDE_DFLAG_PRESENT && tdrive->dev_flags & IDE_DFLAG_PARKED && time_after(tdrive->sleep, timeout)) @@ -1133,8 +1132,8 @@ static ide_startstop_t do_reset1 (ide_drive_t *drive, int do_not_try_atapi) * First, reset any device state data we were maintaining * for any of the drives on this interface. */ - for (unit = 0; unit < MAX_DRIVES; ++unit) - pre_reset(hwif->devices[unit]); + ide_port_for_each_dev(i, tdrive, hwif) + pre_reset(tdrive); if (io_ports->ctl_addr == 0) { spin_unlock_irqrestore(&hwif->lock, flags); diff --git a/drivers/ide/ide-probe.c b/drivers/ide/ide-probe.c index 006e601cafb8..e688ca1c967c 100644 --- a/drivers/ide/ide-probe.c +++ b/drivers/ide/ide-probe.c @@ -697,7 +697,8 @@ out: static int ide_port_wait_ready(ide_hwif_t *hwif) { - int unit, rc; + ide_drive_t *drive; + int i, rc; printk(KERN_DEBUG "Probing IDE interface %s...\n", hwif->name); @@ -714,9 +715,7 @@ static int ide_port_wait_ready(ide_hwif_t *hwif) return rc; /* Now make sure both master & slave are ready */ - for (unit = 0; unit < MAX_DRIVES; unit++) { - ide_drive_t *drive = hwif->devices[unit]; - + ide_port_for_each_dev(i, drive, hwif) { /* Ignore disks that we will not probe for later. */ if ((drive->dev_flags & IDE_DFLAG_NOPROBE) == 0 || (drive->dev_flags & IDE_DFLAG_PRESENT)) { @@ -732,7 +731,7 @@ static int ide_port_wait_ready(ide_hwif_t *hwif) } out: /* Exit function with master reselected (let's be sane) */ - if (unit) + if (i) SELECT_DRIVE(hwif->devices[0]); return rc; @@ -778,9 +777,10 @@ EXPORT_SYMBOL_GPL(ide_undecoded_slave); static int ide_probe_port(ide_hwif_t *hwif) { + ide_drive_t *drive; unsigned long flags; unsigned int irqd; - int unit, rc = -ENODEV; + int i, rc = -ENODEV; BUG_ON(hwif->present); @@ -806,9 +806,7 @@ static int ide_probe_port(ide_hwif_t *hwif) * Second drive should only exist if first drive was found, * but a lot of cdrom drives are configured as single slaves. */ - for (unit = 0; unit < MAX_DRIVES; ++unit) { - ide_drive_t *drive = hwif->devices[unit]; - + ide_port_for_each_dev(i, drive, hwif) { (void) probe_for_drive(drive); if (drive->dev_flags & IDE_DFLAG_PRESENT) rc = 0; @@ -829,20 +827,17 @@ static int ide_probe_port(ide_hwif_t *hwif) static void ide_port_tune_devices(ide_hwif_t *hwif) { const struct ide_port_ops *port_ops = hwif->port_ops; - int unit; - - for (unit = 0; unit < MAX_DRIVES; unit++) { - ide_drive_t *drive = hwif->devices[unit]; + ide_drive_t *drive; + int i; + ide_port_for_each_dev(i, drive, hwif) { if (drive->dev_flags & IDE_DFLAG_PRESENT) { if (port_ops && port_ops->quirkproc) port_ops->quirkproc(drive); } } - for (unit = 0; unit < MAX_DRIVES; ++unit) { - ide_drive_t *drive = hwif->devices[unit]; - + ide_port_for_each_dev(i, drive, hwif) { if (drive->dev_flags & IDE_DFLAG_PRESENT) { ide_set_max_pio(drive); @@ -853,9 +848,7 @@ static void ide_port_tune_devices(ide_hwif_t *hwif) } } - for (unit = 0; unit < MAX_DRIVES; ++unit) { - ide_drive_t *drive = hwif->devices[unit]; - + ide_port_for_each_dev(i, drive, hwif) { if ((hwif->host_flags & IDE_HFLAG_NO_IO_32BIT) || drive->id[ATA_ID_DWORD_IO]) drive->dev_flags |= IDE_DFLAG_NO_IO_32BIT; @@ -927,12 +920,11 @@ static DEFINE_MUTEX(ide_cfg_mtx); */ static int ide_port_setup_devices(ide_hwif_t *hwif) { + ide_drive_t *drive; int i, j = 0; mutex_lock(&ide_cfg_mtx); - for (i = 0; i < MAX_DRIVES; i++) { - ide_drive_t *drive = hwif->devices[i]; - + ide_port_for_each_dev(i, drive, hwif) { if ((drive->dev_flags & IDE_DFLAG_PRESENT) == 0) continue; @@ -1161,10 +1153,10 @@ out: static void hwif_register_devices(ide_hwif_t *hwif) { + ide_drive_t *drive; unsigned int i; - for (i = 0; i < MAX_DRIVES; i++) { - ide_drive_t *drive = hwif->devices[i]; + ide_port_for_each_dev(i, drive, hwif) { struct device *dev = &drive->gendev; int ret; @@ -1187,11 +1179,10 @@ static void hwif_register_devices(ide_hwif_t *hwif) static void ide_port_init_devices(ide_hwif_t *hwif) { const struct ide_port_ops *port_ops = hwif->port_ops; + ide_drive_t *drive; int i; - for (i = 0; i < MAX_DRIVES; i++) { - ide_drive_t *drive = hwif->devices[i]; - + ide_port_for_each_dev(i, drive, hwif) { drive->dn = i + hwif->channel * 2; if (hwif->host_flags & IDE_HFLAG_IO_32BIT) @@ -1282,16 +1273,16 @@ static const u8 ide_hwif_to_major[] = static void ide_port_init_devices_data(ide_hwif_t *hwif) { - int unit; + ide_drive_t *drive; + int i; - for (unit = 0; unit < MAX_DRIVES; ++unit) { - ide_drive_t *drive = hwif->devices[unit]; - u8 j = (hwif->index * MAX_DRIVES) + unit; + ide_port_for_each_dev(i, drive, hwif) { + u8 j = (hwif->index * MAX_DRIVES) + i; memset(drive, 0, sizeof(*drive)); drive->media = ide_disk; - drive->select = (unit << 4) | ATA_DEVICE_OBS; + drive->select = (i << 4) | ATA_DEVICE_OBS; drive->hwif = hwif; drive->ready_stat = ATA_DRDY; drive->bad_wstat = BAD_W_STAT; @@ -1387,10 +1378,11 @@ static void ide_free_port_slot(int idx) static void ide_port_free_devices(ide_hwif_t *hwif) { + ide_drive_t *drive; int i; - for (i = 0; i < MAX_DRIVES; i++) - kfree(hwif->devices[i]); + ide_port_for_each_dev(i, drive, hwif) + kfree(drive); } static int ide_port_alloc_devices(ide_hwif_t *hwif, int node) @@ -1478,9 +1470,7 @@ int ide_host_register(struct ide_host *host, const struct ide_port_info *d, ide_hwif_t *hwif, *mate = NULL; int i, j = 0; - for (i = 0; i < MAX_HOST_PORTS; i++) { - hwif = host->ports[i]; - + ide_host_for_each_port(i, hwif, host) { if (hwif == NULL) { mate = NULL; continue; @@ -1506,9 +1496,7 @@ int ide_host_register(struct ide_host *host, const struct ide_port_info *d, ide_port_init_devices(hwif); } - for (i = 0; i < MAX_HOST_PORTS; i++) { - hwif = host->ports[i]; - + ide_host_for_each_port(i, hwif, host) { if (hwif == NULL) continue; @@ -1523,9 +1511,7 @@ int ide_host_register(struct ide_host *host, const struct ide_port_info *d, ide_port_tune_devices(hwif); } - for (i = 0; i < MAX_HOST_PORTS; i++) { - hwif = host->ports[i]; - + ide_host_for_each_port(i, hwif, host) { if (hwif == NULL) continue; @@ -1550,9 +1536,7 @@ int ide_host_register(struct ide_host *host, const struct ide_port_info *d, ide_acpi_port_init_devices(hwif); } - for (i = 0; i < MAX_HOST_PORTS; i++) { - hwif = host->ports[i]; - + ide_host_for_each_port(i, hwif, host) { if (hwif == NULL) continue; @@ -1560,9 +1544,7 @@ int ide_host_register(struct ide_host *host, const struct ide_port_info *d, hwif_register_devices(hwif); } - for (i = 0; i < MAX_HOST_PORTS; i++) { - hwif = host->ports[i]; - + ide_host_for_each_port(i, hwif, host) { if (hwif == NULL) continue; @@ -1602,11 +1584,10 @@ EXPORT_SYMBOL_GPL(ide_host_add); static void __ide_port_unregister_devices(ide_hwif_t *hwif) { + ide_drive_t *drive; int i; - for (i = 0; i < MAX_DRIVES; i++) { - ide_drive_t *drive = hwif->devices[i]; - + ide_port_for_each_dev(i, drive, hwif) { if (drive->dev_flags & IDE_DFLAG_PRESENT) { device_unregister(&drive->gendev); wait_for_completion(&drive->gendev_rel_comp); @@ -1675,9 +1656,7 @@ void ide_host_free(struct ide_host *host) ide_hwif_t *hwif; int i; - for (i = 0; i < MAX_HOST_PORTS; i++) { - hwif = host->ports[i]; - + ide_host_for_each_port(i, hwif, host) { if (hwif == NULL) continue; @@ -1692,11 +1671,12 @@ EXPORT_SYMBOL_GPL(ide_host_free); void ide_host_remove(struct ide_host *host) { + ide_hwif_t *hwif; int i; - for (i = 0; i < MAX_HOST_PORTS; i++) { - if (host->ports[i]) - ide_unregister(host->ports[i]); + ide_host_for_each_port(i, hwif, host) { + if (hwif) + ide_unregister(hwif); } ide_host_free(host); diff --git a/drivers/ide/ide-proc.c b/drivers/ide/ide-proc.c index 1dc827fa7061..1d8978b3314a 100644 --- a/drivers/ide/ide-proc.c +++ b/drivers/ide/ide-proc.c @@ -593,14 +593,13 @@ EXPORT_SYMBOL(ide_proc_unregister_driver); void ide_proc_port_register_devices(ide_hwif_t *hwif) { - int d; struct proc_dir_entry *ent; struct proc_dir_entry *parent = hwif->proc; + ide_drive_t *drive; char name[64]; + int i; - for (d = 0; d < MAX_DRIVES; d++) { - ide_drive_t *drive = hwif->devices[d]; - + ide_port_for_each_dev(i, drive, hwif) { if ((drive->dev_flags & IDE_DFLAG_PRESENT) == 0 || drive->proc) continue; diff --git a/drivers/ide/ide.c b/drivers/ide/ide.c index 8a6f893d127e..258805da15c3 100644 --- a/drivers/ide/ide.c +++ b/drivers/ide/ide.c @@ -488,6 +488,7 @@ MODULE_PARM_DESC(ignore_cable, "ignore cable detection"); void ide_port_apply_params(ide_hwif_t *hwif) { + ide_drive_t *drive; int i; if (ide_ignore_cable & (1 << hwif->index)) { @@ -496,8 +497,8 @@ void ide_port_apply_params(ide_hwif_t *hwif) hwif->cbl = ATA_CBL_PATA40_SHORT; } - for (i = 0; i < MAX_DRIVES; i++) - ide_dev_apply_params(hwif->devices[i], i); + ide_port_for_each_dev(i, drive, hwif) + ide_dev_apply_params(drive, i); } /* diff --git a/drivers/ide/scc_pata.c b/drivers/ide/scc_pata.c index 841164d7d3b9..5d53850c79d7 100644 --- a/drivers/ide/scc_pata.c +++ b/drivers/ide/scc_pata.c @@ -406,17 +406,17 @@ static int scc_dma_end(ide_drive_t *drive) data_loss = 1; if (retry++) { struct request *rq = hwif->rq; - int unit; + ide_drive_t *drive; + int i; + /* ERROR_RESET and drive->crc_count are needed * to reduce DMA transfer mode in retry process. */ if (rq) rq->errors |= ERROR_RESET; - for (unit = 0; unit < MAX_DRIVES; unit++) { - ide_drive_t *drive = hwif->devices[unit]; + ide_port_for_each_dev(i, drive, hwif) drive->crc_count++; - } } } } diff --git a/include/linux/ide.h b/include/linux/ide.h index f00086b10be3..4cecd923fc79 100644 --- a/include/linux/ide.h +++ b/include/linux/ide.h @@ -753,7 +753,7 @@ typedef struct hwif_s { unsigned long sata_scr[SATA_NR_PORTS]; - ide_drive_t *devices[MAX_DRIVES]; + ide_drive_t *devices[MAX_DRIVES + 1]; u8 major; /* our major number */ u8 index; /* 0 for ide0; 1 for ide1; ... */ @@ -861,7 +861,7 @@ typedef struct hwif_s { #define MAX_HOST_PORTS 4 struct ide_host { - ide_hwif_t *ports[MAX_HOST_PORTS]; + ide_hwif_t *ports[MAX_HOST_PORTS + 1]; unsigned int n_ports; struct device *dev[2]; unsigned int (*init_chipset)(struct pci_dev *); @@ -1604,4 +1604,11 @@ static inline ide_drive_t *ide_get_pair_dev(ide_drive_t *drive) return (peer->dev_flags & IDE_DFLAG_PRESENT) ? peer : NULL; } + +#define ide_port_for_each_dev(i, dev, port) \ + for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++) + +#define ide_host_for_each_port(i, port, host) \ + for ((i) = 0; ((port) = (host)->ports[i]) || (i) < MAX_HOST_PORTS; (i)++) + #endif /* _IDE_H */ -- cgit v1.2.3