X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fata%2Flibata-core.c;h=5ba96c5052c8c737bf8e07d8968affb334636ccd;hb=d28934ad8a4e87203a95de9c376611de8bc2f013;hp=303fc0d2b978464dbf6d927a370f4cf743862b6b;hpb=53ffe3b440aa85af6fc4eda09b2d44bcdd312d4d;p=linux-2.6 diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 303fc0d2b9..5ba96c5052 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -54,7 +54,6 @@ #include #include #include -#include #include #include #include @@ -121,7 +120,7 @@ static char ata_force_param_buf[PAGE_SIZE] __initdata; module_param_string(force, ata_force_param_buf, sizeof(ata_force_param_buf), 0); MODULE_PARM_DESC(force, "Force ATA configurations including cable type, link speed and transfer mode (see Documentation/kernel-parameters.txt for details)"); -int atapi_enabled = 1; +static int atapi_enabled = 1; module_param(atapi_enabled, int, 0444); MODULE_PARM_DESC(atapi_enabled, "Enable discovery of ATAPI devices (0=off, 1=on)"); @@ -145,7 +144,7 @@ static int libata_dma_mask = ATA_DMA_MASK_ATA|ATA_DMA_MASK_ATAPI|ATA_DMA_MASK_CF module_param_named(dma, libata_dma_mask, int, 0444); MODULE_PARM_DESC(dma, "DMA enable/disable (0x1==ATA, 0x2==ATAPI, 0x4==CF)"); -static int ata_probe_timeout = ATA_TMOUT_INTERNAL / HZ; +static int ata_probe_timeout; module_param(ata_probe_timeout, int, 0444); MODULE_PARM_DESC(ata_probe_timeout, "Set ATA probing timeout (seconds)"); @@ -1133,6 +1132,8 @@ void ata_id_string(const u16 *id, unsigned char *s, { unsigned int c; + BUG_ON(len & 1); + while (len > 0) { c = id[ofs] >> 8; *s = c; @@ -1166,8 +1167,6 @@ void ata_id_c_string(const u16 *id, unsigned char *s, { unsigned char *p; - WARN_ON(!(len & 1)); - ata_id_string(id, s, ofs, len - 1); p = s + strnlen(s, len - 1); @@ -1533,7 +1532,7 @@ unsigned long ata_id_xfermask(const u16 *id) * @ap: The ata_port to queue port_task for * @fn: workqueue function to be scheduled * @data: data for @fn to use - * @delay: delay time for workqueue function + * @delay: delay time in msecs for workqueue function * * Schedule @fn(@data) for execution after @delay jiffies using * port_task. There is one port_task per port and it's the @@ -1552,7 +1551,7 @@ void ata_pio_queue_task(struct ata_port *ap, void *data, unsigned long delay) ap->port_task_data = data; /* may fail if ata_port_flush_task() in progress */ - queue_delayed_work(ata_wq, &ap->port_task, delay); + queue_delayed_work(ata_wq, &ap->port_task, msecs_to_jiffies(delay)); } /** @@ -1612,6 +1611,7 @@ unsigned ata_exec_internal_sg(struct ata_device *dev, struct ata_link *link = dev->link; struct ata_port *ap = link->ap; u8 command = tf->command; + int auto_timeout = 0; struct ata_queued_cmd *qc; unsigned int tag, preempted_tag; u32 preempted_sactive, preempted_qc_active; @@ -1684,8 +1684,14 @@ unsigned ata_exec_internal_sg(struct ata_device *dev, spin_unlock_irqrestore(ap->lock, flags); - if (!timeout) - timeout = ata_probe_timeout * 1000 / HZ; + if (!timeout) { + if (ata_probe_timeout) + timeout = ata_probe_timeout * 1000; + else { + timeout = ata_internal_cmd_timeout(dev, command); + auto_timeout = 1; + } + } rc = wait_for_completion_timeout(&wait, msecs_to_jiffies(timeout)); @@ -1761,6 +1767,9 @@ unsigned ata_exec_internal_sg(struct ata_device *dev, spin_unlock_irqrestore(ap->lock, flags); + if ((err_mask & AC_ERR_TIMEOUT) && auto_timeout) + ata_internal_cmd_timed_out(dev, command); + return err_mask; } @@ -1876,6 +1885,23 @@ static u32 ata_pio_mask_no_iordy(const struct ata_device *adev) return 3 << ATA_SHIFT_PIO; } +/** + * ata_do_dev_read_id - default ID read method + * @dev: device + * @tf: proposed taskfile + * @id: data buffer + * + * Issue the identify taskfile and hand back the buffer containing + * identify data. For some RAID controllers and for pre ATA devices + * this function is wrapped or replaced by the driver + */ +unsigned int ata_do_dev_read_id(struct ata_device *dev, + struct ata_taskfile *tf, u16 *id) +{ + return ata_exec_internal(dev, tf, NULL, DMA_FROM_DEVICE, + id, sizeof(id[0]) * ATA_ID_WORDS, 0); +} + /** * ata_dev_read_id - Read ID data from the specified device * @dev: target device @@ -1911,7 +1937,7 @@ int ata_dev_read_id(struct ata_device *dev, unsigned int *p_class, if (ata_msg_ctl(ap)) ata_dev_printk(dev, KERN_DEBUG, "%s: ENTER\n", __func__); - retry: +retry: ata_tf_init(dev, &tf); switch (class) { @@ -1939,8 +1965,11 @@ int ata_dev_read_id(struct ata_device *dev, unsigned int *p_class, */ tf.flags |= ATA_TFLAG_POLLING; - err_mask = ata_exec_internal(dev, &tf, NULL, DMA_FROM_DEVICE, - id, sizeof(id[0]) * ATA_ID_WORDS, 0); + if (ap->ops->read_id) + err_mask = ap->ops->read_id(dev, &tf, id); + else + err_mask = ata_do_dev_read_id(dev, &tf, id); + if (err_mask) { if (err_mask & AC_ERR_NODEV_HINT) { ata_dev_printk(dev, KERN_DEBUG, @@ -2133,6 +2162,16 @@ int ata_dev_configure(struct ata_device *dev) return 0; } + if ((!atapi_enabled || (ap->flags & ATA_FLAG_NO_ATAPI)) && + dev->class == ATA_DEV_ATAPI) { + ata_dev_printk(dev, KERN_WARNING, + "WARNING: ATAPI is %s, device ignored.\n", + atapi_enabled ? "not supported with this driver" + : "disabled"); + ata_dev_disable(dev); + return 0; + } + /* let ACPI work its magic */ rc = ata_acpi_on_devcfg(dev); if (rc) @@ -3319,7 +3358,7 @@ int ata_wait_ready(struct ata_link *link, unsigned long deadline, int (*check_ready)(struct ata_link *link)) { unsigned long start = jiffies; - unsigned long nodev_deadline = start + ATA_TMOUT_FF_WAIT; + unsigned long nodev_deadline = ata_deadline(start, ATA_TMOUT_FF_WAIT); int warned = 0; if (time_after(nodev_deadline, deadline)) @@ -3387,7 +3426,7 @@ int ata_wait_ready(struct ata_link *link, unsigned long deadline, int ata_wait_after_reset(struct ata_link *link, unsigned long deadline, int (*check_ready)(struct ata_link *link)) { - msleep(ATA_WAIT_AFTER_RESET_MSECS); + msleep(ATA_WAIT_AFTER_RESET); return ata_wait_ready(link, deadline, check_ready); } @@ -3417,13 +3456,13 @@ int ata_wait_after_reset(struct ata_link *link, unsigned long deadline, int sata_link_debounce(struct ata_link *link, const unsigned long *params, unsigned long deadline) { - unsigned long interval_msec = params[0]; - unsigned long duration = msecs_to_jiffies(params[1]); + unsigned long interval = params[0]; + unsigned long duration = params[1]; unsigned long last_jiffies, t; u32 last, cur; int rc; - t = jiffies + msecs_to_jiffies(params[2]); + t = ata_deadline(jiffies, params[2]); if (time_before(t, deadline)) deadline = t; @@ -3435,7 +3474,7 @@ int sata_link_debounce(struct ata_link *link, const unsigned long *params, last_jiffies = jiffies; while (1) { - msleep(interval_msec); + msleep(interval); if ((rc = sata_scr_read(link, SCR_STATUS, &cur))) return rc; cur &= 0xf; @@ -3444,7 +3483,8 @@ int sata_link_debounce(struct ata_link *link, const unsigned long *params, if (cur == last) { if (cur == 1 && time_before(jiffies, deadline)) continue; - if (time_after(jiffies, last_jiffies + duration)) + if (time_after(jiffies, + ata_deadline(last_jiffies, duration))) return 0; continue; } @@ -3636,7 +3676,8 @@ int sata_link_hardreset(struct ata_link *link, const unsigned long *timing, if (check_ready) { unsigned long pmp_deadline; - pmp_deadline = jiffies + ATA_TMOUT_PMP_SRST_WAIT; + pmp_deadline = ata_deadline(jiffies, + ATA_TMOUT_PMP_SRST_WAIT); if (time_after(pmp_deadline, deadline)) pmp_deadline = deadline; ata_wait_ready(link, pmp_deadline, check_ready); @@ -6073,22 +6114,24 @@ static void __init ata_parse_force_param(void) static int __init ata_init(void) { - ata_probe_timeout *= HZ; - ata_parse_force_param(); ata_wq = create_workqueue("ata"); if (!ata_wq) - return -ENOMEM; + goto free_force_tbl; ata_aux_wq = create_singlethread_workqueue("ata_aux"); - if (!ata_aux_wq) { - destroy_workqueue(ata_wq); - return -ENOMEM; - } + if (!ata_aux_wq) + goto free_wq; printk(KERN_DEBUG "libata version " DRV_VERSION " loaded.\n"); return 0; + +free_wq: + destroy_workqueue(ata_wq); +free_force_tbl: + kfree(ata_force_tbl); + return -ENOMEM; } static void __exit ata_exit(void) @@ -6127,8 +6170,8 @@ int ata_ratelimit(void) * @reg: IO-mapped register * @mask: Mask to apply to read register value * @val: Wait condition - * @interval_msec: polling interval in milliseconds - * @timeout_msec: timeout in milliseconds + * @interval: polling interval in milliseconds + * @timeout: timeout in milliseconds * * Waiting for some bits of register to change is a common * operation for ATA controllers. This function reads 32bit LE @@ -6146,10 +6189,9 @@ int ata_ratelimit(void) * The final register value. */ u32 ata_wait_register(void __iomem *reg, u32 mask, u32 val, - unsigned long interval_msec, - unsigned long timeout_msec) + unsigned long interval, unsigned long timeout) { - unsigned long timeout; + unsigned long deadline; u32 tmp; tmp = ioread32(reg); @@ -6158,10 +6200,10 @@ u32 ata_wait_register(void __iomem *reg, u32 mask, u32 val, * preceding writes reach the controller before starting to * eat away the timeout. */ - timeout = jiffies + (timeout_msec * HZ) / 1000; + deadline = ata_deadline(jiffies, timeout); - while ((tmp & mask) == val && time_before(jiffies, timeout)) { - msleep(interval_msec); + while ((tmp & mask) == val && time_before(jiffies, deadline)) { + msleep(interval); tmp = ioread32(reg); } @@ -6261,6 +6303,7 @@ EXPORT_SYMBOL_GPL(ata_host_resume); #endif /* CONFIG_PM */ EXPORT_SYMBOL_GPL(ata_id_string); EXPORT_SYMBOL_GPL(ata_id_c_string); +EXPORT_SYMBOL_GPL(ata_do_dev_read_id); EXPORT_SYMBOL_GPL(ata_scsi_simulate); EXPORT_SYMBOL_GPL(ata_pio_need_iordy);