#include <linux/init.h>
#include <linux/list.h>
#include <linux/mm.h>
-#include <linux/highmem.h>
#include <linux/spinlock.h>
#include <linux/blkdev.h>
#include <linux/delay.h>
#include <linux/completion.h>
#include <linux/suspend.h>
#include <linux/workqueue.h>
-#include <linux/jiffies.h>
#include <linux/scatterlist.h>
#include <linux/io.h>
+#include <linux/async.h>
#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_host.h>
#include <linux/libata.h>
-#include <asm/semaphore.h>
#include <asm/byteorder.h>
#include <linux/cdrom.h>
const unsigned long sata_deb_timing_hotplug[] = { 25, 500, 2000 };
const unsigned long sata_deb_timing_long[] = { 100, 2000, 5000 };
+const struct ata_port_operations ata_base_port_ops = {
+ .prereset = ata_std_prereset,
+ .postreset = ata_std_postreset,
+ .error_handler = ata_std_error_handler,
+};
+
+const struct ata_port_operations sata_port_ops = {
+ .inherits = &ata_base_port_ops,
+
+ .qc_defer = ata_std_qc_defer,
+ .hardreset = sata_std_hardreset,
+};
+
static unsigned int ata_dev_init_params(struct ata_device *dev,
u16 heads, u16 sectors);
static unsigned int ata_dev_set_xfermode(struct ata_device *dev);
unsigned long xfer_mask;
unsigned int horkage_on;
unsigned int horkage_off;
+ unsigned int lflags;
};
struct ata_force_ent {
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)");
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)");
MODULE_VERSION(DRV_VERSION);
+static bool ata_sstatus_online(u32 sstatus)
+{
+ return (sstatus & 0xf) == 0x3;
+}
+
+/**
+ * ata_link_next - link iteration helper
+ * @link: the previous link, NULL to start
+ * @ap: ATA port containing links to iterate
+ * @mode: iteration mode, one of ATA_LITER_*
+ *
+ * LOCKING:
+ * Host lock or EH context.
+ *
+ * RETURNS:
+ * Pointer to the next link.
+ */
+struct ata_link *ata_link_next(struct ata_link *link, struct ata_port *ap,
+ enum ata_link_iter_mode mode)
+{
+ BUG_ON(mode != ATA_LITER_EDGE &&
+ mode != ATA_LITER_PMP_FIRST && mode != ATA_LITER_HOST_FIRST);
+
+ /* NULL link indicates start of iteration */
+ if (!link)
+ switch (mode) {
+ case ATA_LITER_EDGE:
+ case ATA_LITER_PMP_FIRST:
+ if (sata_pmp_attached(ap))
+ return ap->pmp_link;
+ /* fall through */
+ case ATA_LITER_HOST_FIRST:
+ return &ap->link;
+ }
+
+ /* we just iterated over the host link, what's next? */
+ if (link == &ap->link)
+ switch (mode) {
+ case ATA_LITER_HOST_FIRST:
+ if (sata_pmp_attached(ap))
+ return ap->pmp_link;
+ /* fall through */
+ case ATA_LITER_PMP_FIRST:
+ if (unlikely(ap->slave_link))
+ return ap->slave_link;
+ /* fall through */
+ case ATA_LITER_EDGE:
+ return NULL;
+ }
+
+ /* slave_link excludes PMP */
+ if (unlikely(link == ap->slave_link))
+ return NULL;
+
+ /* we were over a PMP link */
+ if (++link < ap->pmp_link + ap->nr_pmp_links)
+ return link;
+
+ if (mode == ATA_LITER_PMP_FIRST)
+ return &ap->link;
+
+ return NULL;
+}
+
+/**
+ * ata_dev_next - device iteration helper
+ * @dev: the previous device, NULL to start
+ * @link: ATA link containing devices to iterate
+ * @mode: iteration mode, one of ATA_DITER_*
+ *
+ * LOCKING:
+ * Host lock or EH context.
+ *
+ * RETURNS:
+ * Pointer to the next device.
+ */
+struct ata_device *ata_dev_next(struct ata_device *dev, struct ata_link *link,
+ enum ata_dev_iter_mode mode)
+{
+ BUG_ON(mode != ATA_DITER_ENABLED && mode != ATA_DITER_ENABLED_REVERSE &&
+ mode != ATA_DITER_ALL && mode != ATA_DITER_ALL_REVERSE);
+
+ /* NULL dev indicates start of iteration */
+ if (!dev)
+ switch (mode) {
+ case ATA_DITER_ENABLED:
+ case ATA_DITER_ALL:
+ dev = link->device;
+ goto check;
+ case ATA_DITER_ENABLED_REVERSE:
+ case ATA_DITER_ALL_REVERSE:
+ dev = link->device + ata_link_max_devices(link) - 1;
+ goto check;
+ }
+
+ next:
+ /* move to the next one */
+ switch (mode) {
+ case ATA_DITER_ENABLED:
+ case ATA_DITER_ALL:
+ if (++dev < link->device + ata_link_max_devices(link))
+ goto check;
+ return NULL;
+ case ATA_DITER_ENABLED_REVERSE:
+ case ATA_DITER_ALL_REVERSE:
+ if (--dev >= link->device)
+ goto check;
+ return NULL;
+ }
+
+ check:
+ if ((mode == ATA_DITER_ENABLED || mode == ATA_DITER_ENABLED_REVERSE) &&
+ !ata_dev_enabled(dev))
+ goto next;
+ return dev;
+}
+
+/**
+ * ata_dev_phys_link - find physical link for a device
+ * @dev: ATA device to look up physical link for
+ *
+ * Look up physical link which @dev is attached to. Note that
+ * this is different from @dev->link only when @dev is on slave
+ * link. For all other cases, it's the same as @dev->link.
+ *
+ * LOCKING:
+ * Don't care.
+ *
+ * RETURNS:
+ * Pointer to the found physical link.
+ */
+struct ata_link *ata_dev_phys_link(struct ata_device *dev)
+{
+ struct ata_port *ap = dev->link->ap;
+
+ if (!ap->slave_link)
+ return dev->link;
+ if (!dev->devno)
+ return &ap->link;
+ return ap->slave_link;
+}
+
/**
* ata_force_cbl - force cable type according to libata.force
* @ap: ATA port of interest
}
/**
- * ata_force_spd_limit - force SATA spd limit according to libata.force
+ * ata_force_link_limits - force link limits according to libata.force
* @link: ATA link of interest
*
- * Force SATA spd limit according to libata.force and whine about
- * it. When only the port part is specified (e.g. 1:), the limit
- * applies to all links connected to both the host link and all
- * fan-out ports connected via PMP. If the device part is
- * specified as 0 (e.g. 1.00:), it specifies the first fan-out
- * link not the host link. Device number 15 always points to the
- * host link whether PMP is attached or not.
+ * Force link flags and SATA spd limit according to libata.force
+ * and whine about it. When only the port part is specified
+ * (e.g. 1:), the limit applies to all links connected to both
+ * the host link and all fan-out ports connected via PMP. If the
+ * device part is specified as 0 (e.g. 1.00:), it specifies the
+ * first fan-out link not the host link. Device number 15 always
+ * points to the host link whether PMP is attached or not. If the
+ * controller has slave link, device number 16 points to it.
*
* LOCKING:
* EH context.
*/
-static void ata_force_spd_limit(struct ata_link *link)
+static void ata_force_link_limits(struct ata_link *link)
{
- int linkno, i;
+ bool did_spd = false;
+ int linkno = link->pmp;
+ int i;
if (ata_is_host_link(link))
- linkno = 15;
- else
- linkno = link->pmp;
+ linkno += 15;
for (i = ata_force_tbl_size - 1; i >= 0; i--) {
const struct ata_force_ent *fe = &ata_force_tbl[i];
if (fe->device != -1 && fe->device != linkno)
continue;
- if (!fe->param.spd_limit)
- continue;
+ /* only honor the first spd limit */
+ if (!did_spd && fe->param.spd_limit) {
+ link->hw_sata_spd_limit = (1 << fe->param.spd_limit) - 1;
+ ata_link_printk(link, KERN_NOTICE,
+ "FORCE: PHY spd limit set to %s\n",
+ fe->param.name);
+ did_spd = true;
+ }
- link->hw_sata_spd_limit = (1 << fe->param.spd_limit) - 1;
- ata_link_printk(link, KERN_NOTICE,
- "FORCE: PHY spd limit set to %s\n", fe->param.name);
- return;
+ /* let lflags stack */
+ if (fe->param.lflags) {
+ link->flags |= fe->param.lflags;
+ ata_link_printk(link, KERN_NOTICE,
+ "FORCE: link flag 0x%x forced -> 0x%x\n",
+ fe->param.lflags, link->flags);
+ }
}
}
int alt_devno = devno;
int i;
- /* allow n.15 for the first device attached to host port */
- if (ata_is_host_link(dev->link) && devno == 0)
- alt_devno = 15;
+ /* allow n.15/16 for devices attached to host port */
+ if (ata_is_host_link(dev->link))
+ alt_devno += 15;
for (i = ata_force_tbl_size - 1; i >= 0; i--) {
const struct ata_force_ent *fe = &ata_force_tbl[i];
int alt_devno = devno;
int i;
- /* allow n.15 for the first device attached to host port */
- if (ata_is_host_link(dev->link) && devno == 0)
- alt_devno = 15;
+ /* allow n.15/16 for devices attached to host port */
+ if (ata_is_host_link(dev->link))
+ alt_devno += 15;
for (i = 0; i < ata_force_tbl_size; i++) {
const struct ata_force_ent *fe = &ata_force_tbl[i];
case GPCMD_READ_CD_MSF:
return ATAPI_READ_CD;
+ case ATA_16:
+ case ATA_12:
+ if (atapi_passthru16)
+ return ATAPI_PASS_THRU;
+ /* fall thru */
default:
return ATAPI_MISC;
}
if (tf->flags & ATA_TFLAG_LBA48) {
block |= (u64)tf->hob_lbah << 40;
block |= (u64)tf->hob_lbam << 32;
- block |= tf->hob_lbal << 24;
+ block |= (u64)tf->hob_lbal << 24;
} else
block |= (tf->device & 0xf) << 24;
static const char * const spd_str[] = {
"1.5 Gbps",
"3.0 Gbps",
+ "6.0 Gbps",
};
if (spd == 0 || (spd - 1) >= ARRAY_SIZE(spd_str))
return spd_str[spd - 1];
}
-void ata_dev_disable(struct ata_device *dev)
-{
- if (ata_dev_enabled(dev)) {
- if (ata_msg_drv(dev->link->ap))
- ata_dev_printk(dev, KERN_WARNING, "disabled\n");
- ata_acpi_on_disable(dev);
- ata_down_xfermask_limit(dev, ATA_DNXFER_FORCE_PIO0 |
- ATA_DNXFER_QUIET);
- dev->class++;
- }
-}
-
static int ata_dev_set_dipm(struct ata_device *dev, enum link_pm policy)
{
struct ata_link *link = dev->link;
for (i = 0; i < host->n_ports; i++) {
ap = host->ports[i];
- ata_port_for_each_link(link, ap) {
- ata_link_for_each_dev(dev, link)
+ ata_for_each_link(link, ap, EDGE) {
+ ata_for_each_dev(dev, link, ALL)
ata_dev_disable_pm(dev);
}
}
}
#endif /* CONFIG_PM */
-
-/**
- * ata_devchk - PATA device presence detection
- * @ap: ATA channel to examine
- * @device: Device to examine (starting at zero)
- *
- * This technique was originally described in
- * Hale Landis's ATADRVR (www.ata-atapi.com), and
- * later found its way into the ATA/ATAPI spec.
- *
- * Write a pattern to the ATA shadow registers,
- * and if a device is present, it will respond by
- * correctly storing and echoing back the
- * ATA shadow register contents.
- *
- * LOCKING:
- * caller.
- */
-
-static unsigned int ata_devchk(struct ata_port *ap, unsigned int device)
-{
- struct ata_ioports *ioaddr = &ap->ioaddr;
- u8 nsect, lbal;
-
- ap->ops->dev_select(ap, device);
-
- iowrite8(0x55, ioaddr->nsect_addr);
- iowrite8(0xaa, ioaddr->lbal_addr);
-
- iowrite8(0xaa, ioaddr->nsect_addr);
- iowrite8(0x55, ioaddr->lbal_addr);
-
- iowrite8(0x55, ioaddr->nsect_addr);
- iowrite8(0xaa, ioaddr->lbal_addr);
-
- nsect = ioread8(ioaddr->nsect_addr);
- lbal = ioread8(ioaddr->lbal_addr);
-
- if ((nsect == 0x55) && (lbal == 0xaa))
- return 1; /* we found a device */
-
- return 0; /* nothing found */
-}
-
/**
* ata_dev_classify - determine device type based on ATA-spec signature
* @tf: ATA taskfile register set for device to be identified
}
/**
- * ata_dev_try_classify - Parse returned ATA device signature
- * @dev: ATA device to classify (starting at zero)
- * @present: device seems present
- * @r_err: Value of error register on completion
- *
- * After an event -- SRST, E.D.D., or SATA COMRESET -- occurs,
- * an ATA/ATAPI-defined set of values is placed in the ATA
- * shadow registers, indicating the results of device detection
- * and diagnostics.
- *
- * Select the ATA device, and read the values from the ATA shadow
- * registers. Then parse according to the Error register value,
- * and the spec-defined values examined by ata_dev_classify().
- *
- * LOCKING:
- * caller.
- *
- * RETURNS:
- * Device type - %ATA_DEV_ATA, %ATA_DEV_ATAPI or %ATA_DEV_NONE.
- */
-unsigned int ata_dev_try_classify(struct ata_device *dev, int present,
- u8 *r_err)
-{
- struct ata_port *ap = dev->link->ap;
- struct ata_taskfile tf;
- unsigned int class;
- u8 err;
-
- ap->ops->dev_select(ap, dev->devno);
-
- memset(&tf, 0, sizeof(tf));
-
- ap->ops->tf_read(ap, &tf);
- err = tf.feature;
- if (r_err)
- *r_err = err;
-
- /* see if device passed diags: continue and warn later */
- if (err == 0)
- /* diagnostic fail : do nothing _YET_ */
- dev->horkage |= ATA_HORKAGE_DIAGNOSTIC;
- else if (err == 1)
- /* do nothing */ ;
- else if ((dev->devno == 0) && (err == 0x81))
- /* do nothing */ ;
- else
- return ATA_DEV_NONE;
-
- /* determine if device is ATA or ATAPI */
- class = ata_dev_classify(&tf);
-
- if (class == ATA_DEV_UNKNOWN) {
- /* If the device failed diagnostic, it's likely to
- * have reported incorrect device signature too.
- * Assume ATA device if the device seems present but
- * device signature is invalid with diagnostic
- * failure.
- */
- if (present && (dev->horkage & ATA_HORKAGE_DIAGNOSTIC))
- class = ATA_DEV_ATA;
- else
- class = ATA_DEV_NONE;
- } else if ((class == ATA_DEV_ATA) && (ata_chk_status(ap) == 0))
- class = ATA_DEV_NONE;
-
- return class;
-}
-
-/**
* ata_id_string - Convert IDENTIFY DEVICE page into string
* @id: IDENTIFY DEVICE results we will examine
* @s: string into which data is output
{
unsigned int c;
+ BUG_ON(len & 1);
+
while (len > 0) {
c = id[ofs] >> 8;
*s = c;
{
unsigned char *p;
- WARN_ON(!(len & 1));
-
ata_id_string(id, s, ofs, len - 1);
p = s + strnlen(s, len - 1);
}
}
-static u64 ata_tf_to_lba48(struct ata_taskfile *tf)
+u64 ata_tf_to_lba48(const struct ata_taskfile *tf)
{
u64 sectors = 0;
sectors |= ((u64)(tf->hob_lbah & 0xff)) << 40;
sectors |= ((u64)(tf->hob_lbam & 0xff)) << 32;
- sectors |= (tf->hob_lbal & 0xff) << 24;
+ sectors |= ((u64)(tf->hob_lbal & 0xff)) << 24;
sectors |= (tf->lbah & 0xff) << 16;
sectors |= (tf->lbam & 0xff) << 8;
sectors |= (tf->lbal & 0xff);
- return ++sectors;
+ return sectors;
}
-static u64 ata_tf_to_lba(struct ata_taskfile *tf)
+u64 ata_tf_to_lba(const struct ata_taskfile *tf)
{
u64 sectors = 0;
sectors |= (tf->lbam & 0xff) << 8;
sectors |= (tf->lbal & 0xff);
- return ++sectors;
+ return sectors;
}
/**
}
if (lba48)
- *max_sectors = ata_tf_to_lba48(&tf);
+ *max_sectors = ata_tf_to_lba48(&tf) + 1;
else
- *max_sectors = ata_tf_to_lba(&tf);
+ *max_sectors = ata_tf_to_lba(&tf) + 1;
if (dev->horkage & ATA_HORKAGE_HPA_SIZE)
(*max_sectors)--;
return 0;
}
/**
- * ata_noop_dev_select - Select device 0/1 on ATA bus
- * @ap: ATA channel to manipulate
- * @device: ATA device (numbered from zero) to select
- *
- * This function performs no actual function.
- *
- * May be used as the dev_select() entry in ata_port_operations.
- *
- * LOCKING:
- * caller.
- */
-void ata_noop_dev_select(struct ata_port *ap, unsigned int device)
-{
-}
-
-
-/**
- * ata_std_dev_select - Select device 0/1 on ATA bus
- * @ap: ATA channel to manipulate
- * @device: ATA device (numbered from zero) to select
- *
- * Use the method defined in the ATA specification to
- * make either device 0, or device 1, active on the
- * ATA channel. Works with both PIO and MMIO.
- *
- * May be used as the dev_select() entry in ata_port_operations.
- *
- * LOCKING:
- * caller.
- */
-
-void ata_std_dev_select(struct ata_port *ap, unsigned int device)
-{
- u8 tmp;
-
- if (device == 0)
- tmp = ATA_DEVICE_OBS;
- else
- tmp = ATA_DEVICE_OBS | ATA_DEV1;
-
- iowrite8(tmp, ap->ioaddr.device_addr);
- ata_pause(ap); /* needed; also flushes, for mmio */
-}
-
-/**
- * ata_dev_select - Select device 0/1 on ATA bus
- * @ap: ATA channel to manipulate
- * @device: ATA device (numbered from zero) to select
- * @wait: non-zero to wait for Status register BSY bit to clear
- * @can_sleep: non-zero if context allows sleeping
- *
- * Use the method defined in the ATA specification to
- * make either device 0, or device 1, active on the
- * ATA channel.
- *
- * This is a high-level version of ata_std_dev_select(),
- * which additionally provides the services of inserting
- * the proper pauses and status polling, where needed.
- *
- * LOCKING:
- * caller.
- */
-
-void ata_dev_select(struct ata_port *ap, unsigned int device,
- unsigned int wait, unsigned int can_sleep)
-{
- if (ata_msg_probe(ap))
- ata_port_printk(ap, KERN_INFO, "ata_dev_select: ENTER, "
- "device %u, wait %u\n", device, wait);
-
- if (wait)
- ata_wait_idle(ap);
-
- ap->ops->dev_select(ap, device);
-
- if (wait) {
- if (can_sleep && ap->link.device[device].class == ATA_DEV_ATAPI)
- msleep(150);
- ata_wait_idle(ap);
- }
-}
-
-/**
* ata_dump_id - IDENTIFY DEVICE info debugging output
* @id: IDENTIFY DEVICE page to dump
*
/**
* ata_pio_queue_task - Queue port_task
* @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
* LOCKING:
* Inherited from caller.
*/
-static void ata_pio_queue_task(struct ata_port *ap, void *data,
- unsigned long delay)
+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));
}
/**
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;
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));
spin_unlock_irqrestore(ap->lock, flags);
+ if ((err_mask & AC_ERR_TIMEOUT) && auto_timeout)
+ ata_internal_cmd_timed_out(dev, command);
+
return err_mask;
}
as the caller should know this */
if (adev->link->ap->flags & ATA_FLAG_NO_IORDY)
return 0;
+ /* CF spec. r4.1 Table 22 says no iordy on PIO5 and PIO6. */
+ if (ata_id_is_cfa(adev->id)
+ && (adev->pio_mode == XFER_PIO_5 || adev->pio_mode == XFER_PIO_6))
+ return 0;
/* PIO3 and higher it is mandatory */
if (adev->pio_mode > XFER_PIO_2)
return 1;
}
/**
+ * 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
* @p_class: pointer to class of the target device (may be changed)
if (ata_msg_ctl(ap))
ata_dev_printk(dev, KERN_DEBUG, "%s: ENTER\n", __func__);
- ata_dev_select(ap, dev->devno, 1, 1); /* select device 0/1 */
- retry:
+retry:
ata_tf_init(dev, &tf);
switch (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,
return rc;
}
+static int ata_do_link_spd_horkage(struct ata_device *dev)
+{
+ struct ata_link *plink = ata_dev_phys_link(dev);
+ u32 target, target_limit;
+
+ if (!sata_scr_valid(plink))
+ return 0;
+
+ if (dev->horkage & ATA_HORKAGE_1_5_GBPS)
+ target = 1;
+ else
+ return 0;
+
+ target_limit = (1 << target) - 1;
+
+ /* if already on stricter limit, no need to push further */
+ if (plink->sata_spd_limit <= target_limit)
+ return 0;
+
+ plink->sata_spd_limit = target_limit;
+
+ /* Request another EH round by returning -EAGAIN if link is
+ * going faster than the target speed. Forward progress is
+ * guaranteed by setting sata_spd_limit to target_limit above.
+ */
+ if (plink->sata_spd > target) {
+ ata_dev_printk(dev, KERN_INFO,
+ "applying link speed limit horkage to %s\n",
+ sata_spd_string(target));
+ return -EAGAIN;
+ }
+ return 0;
+}
+
static inline u8 ata_dev_knobble(struct ata_device *dev)
{
struct ata_port *ap = dev->link->ap;
+
+ if (ata_dev_blacklisted(dev) & ATA_HORKAGE_BRIDGE_OK)
+ return 0;
+
return ((ap->cbl == ATA_CBL_SATA) && (!ata_id_is_sata(dev->id)));
}
dev->horkage |= ata_dev_blacklisted(dev);
ata_force_horkage(dev);
+ if (dev->horkage & ATA_HORKAGE_DISABLE) {
+ ata_dev_printk(dev, KERN_INFO,
+ "unsupported device, disabling\n");
+ ata_dev_disable(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;
+ }
+
+ rc = ata_do_link_spd_horkage(dev);
+ if (rc)
+ return rc;
+
/* let ACPI work its magic */
rc = ata_acpi_on_devcfg(dev);
if (rc)
* changed notifications and ATAPI ANs.
*/
if ((ap->flags & ATA_FLAG_AN) && ata_id_has_atapi_AN(id) &&
- (!ap->nr_pmp_links ||
+ (!sata_pmp_attached(ap) ||
sata_scr_read(&ap->link, SCR_NOTIFICATION, &sntf) == 0)) {
unsigned int err_mask;
}
}
- if (ata_msg_probe(ap))
- ata_dev_printk(dev, KERN_DEBUG, "%s: EXIT, drv_stat = 0x%x\n",
- __func__, ata_chk_status(ap));
+ if ((dev->horkage & ATA_HORKAGE_FIRMWARE_WARN) && print_info) {
+ ata_dev_printk(dev, KERN_WARNING, "WARNING: device requires "
+ "firmware update to be fully functional.\n");
+ ata_dev_printk(dev, KERN_WARNING, " contact the vendor "
+ "or visit http://ata.wiki.kernel.org.\n");
+ }
+
return 0;
err_out_nosup:
ata_port_probe(ap);
- ata_link_for_each_dev(dev, &ap->link)
+ ata_for_each_dev(dev, &ap->link, ALL)
tries[dev->devno] = ATA_PROBE_MAX_TRIES;
retry:
- ata_link_for_each_dev(dev, &ap->link) {
+ ata_for_each_dev(dev, &ap->link, ALL) {
/* If we issue an SRST then an ATA drive (not ATAPI)
* may change configuration and be in PIO0 timing. If
* we do a hard reset (or are coming from power on)
/* reset and determine device classes */
ap->ops->phy_reset(ap);
- ata_link_for_each_dev(dev, &ap->link) {
+ ata_for_each_dev(dev, &ap->link, ALL) {
if (!(ap->flags & ATA_FLAG_DISABLED) &&
dev->class != ATA_DEV_UNKNOWN)
classes[dev->devno] = dev->class;
specific sequence bass-ackwards so that PDIAG- is released by
the slave device */
- ata_link_for_each_dev_reverse(dev, &ap->link) {
+ ata_for_each_dev(dev, &ap->link, ALL_REVERSE) {
if (tries[dev->devno])
dev->class = classes[dev->devno];
if (ap->ops->cable_detect)
ap->cbl = ap->ops->cable_detect(ap);
- /* We may have SATA bridge glue hiding here irrespective of the
- reported cable types and sensed types */
- ata_link_for_each_dev(dev, &ap->link) {
- if (!ata_dev_enabled(dev))
- continue;
- /* SATA drives indicate we have a bridge. We don't know which
- end of the link the bridge is which is a problem */
+ /* We may have SATA bridge glue hiding here irrespective of
+ * the reported cable types and sensed types. When SATA
+ * drives indicate we have a bridge, we don't know which end
+ * of the link the bridge is which is a problem.
+ */
+ ata_for_each_dev(dev, &ap->link, ENABLED)
if (ata_id_is_sata(dev->id))
ap->cbl = ATA_CBL_SATA;
- }
/* After the identify sequence we can now set up the devices. We do
this in the normal order so that the user doesn't get confused */
- ata_link_for_each_dev(dev, &ap->link) {
- if (!ata_dev_enabled(dev))
- continue;
-
+ ata_for_each_dev(dev, &ap->link, ENABLED) {
ap->link.eh_context.i.flags |= ATA_EHI_PRINTINFO;
rc = ata_dev_configure(dev);
ap->link.eh_context.i.flags &= ~ATA_EHI_PRINTINFO;
if (rc)
goto fail;
- ata_link_for_each_dev(dev, &ap->link)
- if (ata_dev_enabled(dev))
- return 0;
+ ata_for_each_dev(dev, &ap->link, ENABLED)
+ return 0;
/* no device present, disable port */
ata_port_disable(ap);
/* This is the last chance, better to slow
* down than lose it.
*/
- sata_down_spd_limit(&ap->link);
+ sata_down_spd_limit(&ap->link, 0);
ata_down_xfermask_limit(dev, ATA_DNXFER_PIO);
}
}
* LOCKING:
* None.
*/
-void sata_print_link_status(struct ata_link *link)
+static void sata_print_link_status(struct ata_link *link)
{
u32 sstatus, scontrol, tmp;
return;
sata_scr_read(link, SCR_CONTROL, &scontrol);
- if (ata_link_online(link)) {
+ if (ata_phys_link_online(link)) {
tmp = (sstatus >> 4) & 0xf;
ata_link_printk(link, KERN_INFO,
"SATA link up %s (SStatus %X SControl %X)\n",
/**
* sata_down_spd_limit - adjust SATA spd limit downward
* @link: Link to adjust SATA spd limit for
+ * @spd_limit: Additional limit
*
* Adjust SATA spd limit of @link downward. Note that this
* function only adjusts the limit. The change must be applied
* using sata_set_spd().
*
+ * If @spd_limit is non-zero, the speed is limited to equal to or
+ * lower than @spd_limit if such speed is supported. If
+ * @spd_limit is slower than any supported speed, only the lowest
+ * supported speed is allowed.
+ *
* LOCKING:
* Inherited from caller.
*
* RETURNS:
* 0 on success, negative errno on failure
*/
-int sata_down_spd_limit(struct ata_link *link)
+int sata_down_spd_limit(struct ata_link *link, u32 spd_limit)
{
u32 sstatus, spd, mask;
- int rc, highbit;
+ int rc, bit;
if (!sata_scr_valid(link))
return -EOPNOTSUPP;
* If not, use cached value in link->sata_spd.
*/
rc = sata_scr_read(link, SCR_STATUS, &sstatus);
- if (rc == 0)
+ if (rc == 0 && ata_sstatus_online(sstatus))
spd = (sstatus >> 4) & 0xf;
else
spd = link->sata_spd;
return -EINVAL;
/* unconditionally mask off the highest bit */
- highbit = fls(mask) - 1;
- mask &= ~(1 << highbit);
+ bit = fls(mask) - 1;
+ mask &= ~(1 << bit);
/* Mask off all speeds higher than or equal to the current
* one. Force 1.5Gbps if current SPD is not available.
if (!mask)
return -EINVAL;
+ if (spd_limit) {
+ if (mask & ((1 << spd_limit) - 1))
+ mask &= (1 << spd_limit) - 1;
+ else {
+ bit = ffs(mask) - 1;
+ mask = 1 << bit;
+ }
+ }
+
link->sata_spd_limit = mask;
ata_link_printk(link, KERN_WARNING, "limiting SATA link speed to %s\n",
* RETURNS:
* 1 if SATA spd configuration is needed, 0 otherwise.
*/
-int sata_set_spd_needed(struct ata_link *link)
+static int sata_set_spd_needed(struct ata_link *link)
{
u32 scontrol;
*/
static const struct ata_timing ata_timing[] = {
-/* { XFER_PIO_SLOW, 120, 290, 240, 960, 290, 240, 960, 0 }, */
- { XFER_PIO_0, 70, 290, 240, 600, 165, 150, 600, 0 },
- { XFER_PIO_1, 50, 290, 93, 383, 125, 100, 383, 0 },
- { XFER_PIO_2, 30, 290, 40, 330, 100, 90, 240, 0 },
- { XFER_PIO_3, 30, 80, 70, 180, 80, 70, 180, 0 },
- { XFER_PIO_4, 25, 70, 25, 120, 70, 25, 120, 0 },
- { XFER_PIO_5, 15, 65, 25, 100, 65, 25, 100, 0 },
- { XFER_PIO_6, 10, 55, 20, 80, 55, 20, 80, 0 },
-
- { XFER_SW_DMA_0, 120, 0, 0, 0, 480, 480, 960, 0 },
- { XFER_SW_DMA_1, 90, 0, 0, 0, 240, 240, 480, 0 },
- { XFER_SW_DMA_2, 60, 0, 0, 0, 120, 120, 240, 0 },
-
- { XFER_MW_DMA_0, 60, 0, 0, 0, 215, 215, 480, 0 },
- { XFER_MW_DMA_1, 45, 0, 0, 0, 80, 50, 150, 0 },
- { XFER_MW_DMA_2, 25, 0, 0, 0, 70, 25, 120, 0 },
- { XFER_MW_DMA_3, 25, 0, 0, 0, 65, 25, 100, 0 },
- { XFER_MW_DMA_4, 25, 0, 0, 0, 55, 20, 80, 0 },
-
-/* { XFER_UDMA_SLOW, 0, 0, 0, 0, 0, 0, 0, 150 }, */
- { XFER_UDMA_0, 0, 0, 0, 0, 0, 0, 0, 120 },
- { XFER_UDMA_1, 0, 0, 0, 0, 0, 0, 0, 80 },
- { XFER_UDMA_2, 0, 0, 0, 0, 0, 0, 0, 60 },
- { XFER_UDMA_3, 0, 0, 0, 0, 0, 0, 0, 45 },
- { XFER_UDMA_4, 0, 0, 0, 0, 0, 0, 0, 30 },
- { XFER_UDMA_5, 0, 0, 0, 0, 0, 0, 0, 20 },
- { XFER_UDMA_6, 0, 0, 0, 0, 0, 0, 0, 15 },
+/* { XFER_PIO_SLOW, 120, 290, 240, 960, 290, 240, 0, 960, 0 }, */
+ { XFER_PIO_0, 70, 290, 240, 600, 165, 150, 0, 600, 0 },
+ { XFER_PIO_1, 50, 290, 93, 383, 125, 100, 0, 383, 0 },
+ { XFER_PIO_2, 30, 290, 40, 330, 100, 90, 0, 240, 0 },
+ { XFER_PIO_3, 30, 80, 70, 180, 80, 70, 0, 180, 0 },
+ { XFER_PIO_4, 25, 70, 25, 120, 70, 25, 0, 120, 0 },
+ { XFER_PIO_5, 15, 65, 25, 100, 65, 25, 0, 100, 0 },
+ { XFER_PIO_6, 10, 55, 20, 80, 55, 20, 0, 80, 0 },
+
+ { XFER_SW_DMA_0, 120, 0, 0, 0, 480, 480, 50, 960, 0 },
+ { XFER_SW_DMA_1, 90, 0, 0, 0, 240, 240, 30, 480, 0 },
+ { XFER_SW_DMA_2, 60, 0, 0, 0, 120, 120, 20, 240, 0 },
+
+ { XFER_MW_DMA_0, 60, 0, 0, 0, 215, 215, 20, 480, 0 },
+ { XFER_MW_DMA_1, 45, 0, 0, 0, 80, 50, 5, 150, 0 },
+ { XFER_MW_DMA_2, 25, 0, 0, 0, 70, 25, 5, 120, 0 },
+ { XFER_MW_DMA_3, 25, 0, 0, 0, 65, 25, 5, 100, 0 },
+ { XFER_MW_DMA_4, 25, 0, 0, 0, 55, 20, 5, 80, 0 },
+
+/* { XFER_UDMA_SLOW, 0, 0, 0, 0, 0, 0, 0, 0, 150 }, */
+ { XFER_UDMA_0, 0, 0, 0, 0, 0, 0, 0, 0, 120 },
+ { XFER_UDMA_1, 0, 0, 0, 0, 0, 0, 0, 0, 80 },
+ { XFER_UDMA_2, 0, 0, 0, 0, 0, 0, 0, 0, 60 },
+ { XFER_UDMA_3, 0, 0, 0, 0, 0, 0, 0, 0, 45 },
+ { XFER_UDMA_4, 0, 0, 0, 0, 0, 0, 0, 0, 30 },
+ { XFER_UDMA_5, 0, 0, 0, 0, 0, 0, 0, 0, 20 },
+ { XFER_UDMA_6, 0, 0, 0, 0, 0, 0, 0, 0, 15 },
{ 0xFF }
};
static void ata_timing_quantize(const struct ata_timing *t, struct ata_timing *q, int T, int UT)
{
- q->setup = EZ(t->setup * 1000, T);
- q->act8b = EZ(t->act8b * 1000, T);
- q->rec8b = EZ(t->rec8b * 1000, T);
- q->cyc8b = EZ(t->cyc8b * 1000, T);
- q->active = EZ(t->active * 1000, T);
- q->recover = EZ(t->recover * 1000, T);
- q->cycle = EZ(t->cycle * 1000, T);
- q->udma = EZ(t->udma * 1000, UT);
+ q->setup = EZ(t->setup * 1000, T);
+ q->act8b = EZ(t->act8b * 1000, T);
+ q->rec8b = EZ(t->rec8b * 1000, T);
+ q->cyc8b = EZ(t->cyc8b * 1000, T);
+ q->active = EZ(t->active * 1000, T);
+ q->recover = EZ(t->recover * 1000, T);
+ q->dmack_hold = EZ(t->dmack_hold * 1000, T);
+ q->cycle = EZ(t->cycle * 1000, T);
+ q->udma = EZ(t->udma * 1000, UT);
}
void ata_timing_merge(const struct ata_timing *a, const struct ata_timing *b,
if (what & ATA_TIMING_CYC8B ) m->cyc8b = max(a->cyc8b, b->cyc8b);
if (what & ATA_TIMING_ACTIVE ) m->active = max(a->active, b->active);
if (what & ATA_TIMING_RECOVER) m->recover = max(a->recover, b->recover);
+ if (what & ATA_TIMING_DMACK_HOLD) m->dmack_hold = max(a->dmack_hold, b->dmack_hold);
if (what & ATA_TIMING_CYCLE ) m->cycle = max(a->cycle, b->cycle);
if (what & ATA_TIMING_UDMA ) m->udma = max(a->udma, b->udma);
}
if (rc)
return rc;
- /* Old CFA may refuse this command, which is just fine */
- if (dev->xfer_shift == ATA_SHIFT_PIO && ata_id_is_cfa(dev->id))
- ign_dev_err = 1;
-
- /* Some very old devices and some bad newer ones fail any kind of
- SET_XFERMODE request but support PIO0-2 timings and no IORDY */
- if (dev->xfer_shift == ATA_SHIFT_PIO && !ata_id_has_iordy(dev->id) &&
- dev->pio_mode <= XFER_PIO_2)
- ign_dev_err = 1;
-
+ if (dev->xfer_shift == ATA_SHIFT_PIO) {
+ /* Old CFA may refuse this command, which is just fine */
+ if (ata_id_is_cfa(dev->id))
+ ign_dev_err = 1;
+ /* Catch several broken garbage emulations plus some pre
+ ATA devices */
+ if (ata_id_major_version(dev->id) == 0 &&
+ dev->pio_mode <= XFER_PIO_2)
+ ign_dev_err = 1;
+ /* Some very old devices and some bad newer ones fail
+ any kind of SET_XFERMODE request but support PIO0-2
+ timings and no IORDY */
+ if (!ata_id_has_iordy(dev->id) && dev->pio_mode <= XFER_PIO_2)
+ ign_dev_err = 1;
+ }
/* Early MWDMA devices do DMA but don't allow DMA mode setting.
Don't fail an MWDMA0 set IFF the device indicates it is in MWDMA0 */
if (dev->xfer_shift == ATA_SHIFT_MWDMA &&
int rc = 0, used_dma = 0, found = 0;
/* step 1: calculate xfer_mask */
- ata_link_for_each_dev(dev, link) {
+ ata_for_each_dev(dev, link, ENABLED) {
unsigned long pio_mask, dma_mask;
unsigned int mode_mask;
- if (!ata_dev_enabled(dev))
- continue;
-
mode_mask = ATA_DMA_MASK_ATA;
if (dev->class == ATA_DEV_ATAPI)
mode_mask = ATA_DMA_MASK_ATAPI;
dev->dma_mode = ata_xfer_mask2mode(dma_mask);
found = 1;
- if (dev->dma_mode != 0xff)
+ if (ata_dma_enabled(dev))
used_dma = 1;
}
if (!found)
goto out;
/* step 2: always set host PIO timings */
- ata_link_for_each_dev(dev, link) {
- if (!ata_dev_enabled(dev))
- continue;
-
+ ata_for_each_dev(dev, link, ENABLED) {
if (dev->pio_mode == 0xff) {
ata_dev_printk(dev, KERN_WARNING, "no PIO support\n");
rc = -EINVAL;
}
/* step 3: set host DMA timings */
- ata_link_for_each_dev(dev, link) {
- if (!ata_dev_enabled(dev) || dev->dma_mode == 0xff)
+ ata_for_each_dev(dev, link, ENABLED) {
+ if (!ata_dma_enabled(dev))
continue;
dev->xfer_mode = dev->dma_mode;
}
/* step 4: update devices' xfer mode */
- ata_link_for_each_dev(dev, link) {
- /* don't update suspended devices' xfer mode */
- if (!ata_dev_enabled(dev))
- continue;
-
+ ata_for_each_dev(dev, link, ENABLED) {
rc = ata_dev_set_mode(dev);
if (rc)
goto out;
}
/**
- * ata_tf_to_host - issue ATA taskfile to host controller
- * @ap: port to which command is being issued
- * @tf: ATA taskfile register set
- *
- * Issues ATA taskfile register set to ATA host controller,
- * with proper synchronization with interrupt handler and
- * other threads.
+ * ata_wait_ready - wait for link to become ready
+ * @link: link to be waited on
+ * @deadline: deadline jiffies for the operation
+ * @check_ready: callback to check link readiness
*
- * LOCKING:
- * spin_lock_irqsave(host lock)
- */
-
-static inline void ata_tf_to_host(struct ata_port *ap,
- const struct ata_taskfile *tf)
-{
- ap->ops->tf_load(ap, tf);
- ap->ops->exec_command(ap, tf);
-}
-
-/**
- * ata_busy_sleep - sleep until BSY clears, or timeout
- * @ap: port containing status register to be polled
- * @tmout_pat: impatience timeout
- * @tmout: overall timeout
+ * Wait for @link to become ready. @check_ready should return
+ * positive number if @link is ready, 0 if it isn't, -ENODEV if
+ * link doesn't seem to be occupied, other errno for other error
+ * conditions.
*
- * Sleep until ATA Status register bit BSY clears,
- * or a timeout occurs.
+ * Transient -ENODEV conditions are allowed for
+ * ATA_TMOUT_FF_WAIT.
*
* LOCKING:
- * Kernel thread context (may sleep).
+ * EH context.
*
* RETURNS:
- * 0 on success, -errno otherwise.
+ * 0 if @linke is ready before @deadline; otherwise, -errno.
*/
-int ata_busy_sleep(struct ata_port *ap,
- unsigned long tmout_pat, unsigned long tmout)
+int ata_wait_ready(struct ata_link *link, unsigned long deadline,
+ int (*check_ready)(struct ata_link *link))
{
- unsigned long timer_start, timeout;
- u8 status;
+ unsigned long start = jiffies;
+ unsigned long nodev_deadline = ata_deadline(start, ATA_TMOUT_FF_WAIT);
+ int warned = 0;
- status = ata_busy_wait(ap, ATA_BUSY, 300);
- timer_start = jiffies;
- timeout = timer_start + tmout_pat;
- while (status != 0xff && (status & ATA_BUSY) &&
- time_before(jiffies, timeout)) {
- msleep(50);
- status = ata_busy_wait(ap, ATA_BUSY, 3);
- }
+ /* Slave readiness can't be tested separately from master. On
+ * M/S emulation configuration, this function should be called
+ * only on the master and it will handle both master and slave.
+ */
+ WARN_ON(link == link->ap->slave_link);
- if (status != 0xff && (status & ATA_BUSY))
- ata_port_printk(ap, KERN_WARNING,
- "port is slow to respond, please be patient "
- "(Status 0x%x)\n", status);
+ if (time_after(nodev_deadline, deadline))
+ nodev_deadline = deadline;
- timeout = timer_start + tmout;
- while (status != 0xff && (status & ATA_BUSY) &&
- time_before(jiffies, timeout)) {
- msleep(50);
- status = ata_chk_status(ap);
- }
+ while (1) {
+ unsigned long now = jiffies;
+ int ready, tmp;
- if (status == 0xff)
- return -ENODEV;
+ ready = tmp = check_ready(link);
+ if (ready > 0)
+ return 0;
- if (status & ATA_BUSY) {
- ata_port_printk(ap, KERN_ERR, "port failed to respond "
- "(%lu secs, Status 0x%x)\n",
- tmout / HZ, status);
- return -EBUSY;
- }
+ /* -ENODEV could be transient. Ignore -ENODEV if link
+ * is online. Also, some SATA devices take a long
+ * time to clear 0xff after reset. For example,
+ * HHD424020F7SV00 iVDR needs >= 800ms while Quantum
+ * GoVault needs even more than that. Wait for
+ * ATA_TMOUT_FF_WAIT on -ENODEV if link isn't offline.
+ *
+ * Note that some PATA controllers (pata_ali) explode
+ * if status register is read more than once when
+ * there's no device attached.
+ */
+ if (ready == -ENODEV) {
+ if (ata_link_online(link))
+ ready = 0;
+ else if ((link->ap->flags & ATA_FLAG_SATA) &&
+ !ata_link_offline(link) &&
+ time_before(now, nodev_deadline))
+ ready = 0;
+ }
- return 0;
-}
-
-/**
- * ata_wait_after_reset - wait before checking status after reset
- * @ap: port containing status register to be polled
- * @deadline: deadline jiffies for the operation
- *
- * After reset, we need to pause a while before reading status.
- * Also, certain combination of controller and device report 0xff
- * for some duration (e.g. until SATA PHY is up and running)
- * which is interpreted as empty port in ATA world. This
- * function also waits for such devices to get out of 0xff
- * status.
- *
- * LOCKING:
- * Kernel thread context (may sleep).
- */
-void ata_wait_after_reset(struct ata_port *ap, unsigned long deadline)
-{
- unsigned long until = jiffies + ATA_TMOUT_FF_WAIT;
-
- if (time_before(until, deadline))
- deadline = until;
-
- /* Spec mandates ">= 2ms" before checking status. We wait
- * 150ms, because that was the magic delay used for ATAPI
- * devices in Hale Landis's ATADRVR, for the period of time
- * between when the ATA command register is written, and then
- * status is checked. Because waiting for "a while" before
- * checking status is fine, post SRST, we perform this magic
- * delay here as well.
- *
- * Old drivers/ide uses the 2mS rule and then waits for ready.
- */
- msleep(150);
-
- /* Wait for 0xff to clear. Some SATA devices take a long time
- * to clear 0xff after reset. For example, HHD424020F7SV00
- * iVDR needs >= 800ms while. Quantum GoVault needs even more
- * than that.
- *
- * Note that some PATA controllers (pata_ali) explode if
- * status register is read more than once when there's no
- * device attached.
- */
- if (ap->flags & ATA_FLAG_SATA) {
- while (1) {
- u8 status = ata_chk_status(ap);
-
- if (status != 0xff || time_after(jiffies, deadline))
- return;
-
- msleep(50);
- }
- }
-}
-
-/**
- * ata_wait_ready - sleep until BSY clears, or timeout
- * @ap: port containing status register to be polled
- * @deadline: deadline jiffies for the operation
- *
- * Sleep until ATA Status register bit BSY clears, or timeout
- * occurs.
- *
- * LOCKING:
- * Kernel thread context (may sleep).
- *
- * RETURNS:
- * 0 on success, -errno otherwise.
- */
-int ata_wait_ready(struct ata_port *ap, unsigned long deadline)
-{
- unsigned long start = jiffies;
- int warned = 0;
-
- while (1) {
- u8 status = ata_chk_status(ap);
- unsigned long now = jiffies;
-
- if (!(status & ATA_BUSY))
- return 0;
- if (!ata_link_online(&ap->link) && status == 0xff)
- return -ENODEV;
+ if (ready)
+ return ready;
if (time_after(now, deadline))
return -EBUSY;
if (!warned && time_after(now, start + 5 * HZ) &&
(deadline - now > 3 * HZ)) {
- ata_port_printk(ap, KERN_WARNING,
- "port is slow to respond, please be patient "
- "(Status 0x%x)\n", status);
+ ata_link_printk(link, KERN_WARNING,
+ "link is slow to respond, please be patient "
+ "(ready=%d)\n", tmp);
warned = 1;
}
}
}
-static int ata_bus_post_reset(struct ata_port *ap, unsigned int devmask,
- unsigned long deadline)
-{
- struct ata_ioports *ioaddr = &ap->ioaddr;
- unsigned int dev0 = devmask & (1 << 0);
- unsigned int dev1 = devmask & (1 << 1);
- int rc, ret = 0;
-
- /* if device 0 was found in ata_devchk, wait for its
- * BSY bit to clear
- */
- if (dev0) {
- rc = ata_wait_ready(ap, deadline);
- if (rc) {
- if (rc != -ENODEV)
- return rc;
- ret = rc;
- }
- }
-
- /* if device 1 was found in ata_devchk, wait for register
- * access briefly, then wait for BSY to clear.
- */
- if (dev1) {
- int i;
-
- ap->ops->dev_select(ap, 1);
-
- /* Wait for register access. Some ATAPI devices fail
- * to set nsect/lbal after reset, so don't waste too
- * much time on it. We're gonna wait for !BSY anyway.
- */
- for (i = 0; i < 2; i++) {
- u8 nsect, lbal;
-
- nsect = ioread8(ioaddr->nsect_addr);
- lbal = ioread8(ioaddr->lbal_addr);
- if ((nsect == 1) && (lbal == 1))
- break;
- msleep(50); /* give drive a breather */
- }
-
- rc = ata_wait_ready(ap, deadline);
- if (rc) {
- if (rc != -ENODEV)
- return rc;
- ret = rc;
- }
- }
-
- /* is all this really necessary? */
- ap->ops->dev_select(ap, 0);
- if (dev1)
- ap->ops->dev_select(ap, 1);
- if (dev0)
- ap->ops->dev_select(ap, 0);
-
- return ret;
-}
-
-static int ata_bus_softreset(struct ata_port *ap, unsigned int devmask,
- unsigned long deadline)
-{
- struct ata_ioports *ioaddr = &ap->ioaddr;
-
- DPRINTK("ata%u: bus reset via SRST\n", ap->print_id);
-
- /* software reset. causes dev0 to be selected */
- iowrite8(ap->ctl, ioaddr->ctl_addr);
- udelay(20); /* FIXME: flush */
- iowrite8(ap->ctl | ATA_SRST, ioaddr->ctl_addr);
- udelay(20); /* FIXME: flush */
- iowrite8(ap->ctl, ioaddr->ctl_addr);
-
- /* wait a while before checking status */
- ata_wait_after_reset(ap, deadline);
-
- /* Before we perform post reset processing we want to see if
- * the bus shows 0xFF because the odd clown forgets the D7
- * pulldown resistor.
- */
- if (ata_chk_status(ap) == 0xFF)
- return -ENODEV;
-
- return ata_bus_post_reset(ap, devmask, deadline);
-}
-
/**
- * ata_bus_reset - reset host port and associated ATA channel
- * @ap: port to reset
+ * ata_wait_after_reset - wait for link to become ready after reset
+ * @link: link to be waited on
+ * @deadline: deadline jiffies for the operation
+ * @check_ready: callback to check link readiness
*
- * This is typically the first time we actually start issuing
- * commands to the ATA channel. We wait for BSY to clear, then
- * issue EXECUTE DEVICE DIAGNOSTIC command, polling for its
- * result. Determine what devices, if any, are on the channel
- * by looking at the device 0/1 error register. Look at the signature
- * stored in each device's taskfile registers, to determine if
- * the device is ATA or ATAPI.
+ * Wait for @link to become ready after reset.
*
* LOCKING:
- * PCI/etc. bus probe sem.
- * Obtains host lock.
+ * EH context.
*
- * SIDE EFFECTS:
- * Sets ATA_FLAG_DISABLED if bus reset fails.
+ * RETURNS:
+ * 0 if @linke is ready before @deadline; otherwise, -errno.
*/
-
-void ata_bus_reset(struct ata_port *ap)
+int ata_wait_after_reset(struct ata_link *link, unsigned long deadline,
+ int (*check_ready)(struct ata_link *link))
{
- struct ata_device *device = ap->link.device;
- struct ata_ioports *ioaddr = &ap->ioaddr;
- unsigned int slave_possible = ap->flags & ATA_FLAG_SLAVE_POSS;
- u8 err;
- unsigned int dev0, dev1 = 0, devmask = 0;
- int rc;
-
- DPRINTK("ENTER, host %u, port %u\n", ap->print_id, ap->port_no);
-
- /* determine if device 0/1 are present */
- if (ap->flags & ATA_FLAG_SATA_RESET)
- dev0 = 1;
- else {
- dev0 = ata_devchk(ap, 0);
- if (slave_possible)
- dev1 = ata_devchk(ap, 1);
- }
-
- if (dev0)
- devmask |= (1 << 0);
- if (dev1)
- devmask |= (1 << 1);
-
- /* select device 0 again */
- ap->ops->dev_select(ap, 0);
-
- /* issue bus reset */
- if (ap->flags & ATA_FLAG_SRST) {
- rc = ata_bus_softreset(ap, devmask, jiffies + 40 * HZ);
- if (rc && rc != -ENODEV)
- goto err_out;
- }
-
- /*
- * determine by signature whether we have ATA or ATAPI devices
- */
- device[0].class = ata_dev_try_classify(&device[0], dev0, &err);
- if ((slave_possible) && (err != 0x81))
- device[1].class = ata_dev_try_classify(&device[1], dev1, &err);
-
- /* is double-select really necessary? */
- if (device[1].class != ATA_DEV_NONE)
- ap->ops->dev_select(ap, 1);
- if (device[0].class != ATA_DEV_NONE)
- ap->ops->dev_select(ap, 0);
-
- /* if no devices were detected, disable this port */
- if ((device[0].class == ATA_DEV_NONE) &&
- (device[1].class == ATA_DEV_NONE))
- goto err_out;
-
- if (ap->flags & (ATA_FLAG_SATA_RESET | ATA_FLAG_SRST)) {
- /* set up device control for ATA_FLAG_SATA_RESET */
- iowrite8(ap->ctl, ioaddr->ctl_addr);
- }
-
- DPRINTK("EXIT\n");
- return;
-
-err_out:
- ata_port_printk(ap, KERN_ERR, "disabling port\n");
- ata_port_disable(ap);
+ msleep(ATA_WAIT_AFTER_RESET);
- DPRINTK("EXIT\n");
+ return ata_wait_ready(link, deadline, check_ready);
}
/**
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;
last_jiffies = jiffies;
while (1) {
- msleep(interval_msec);
+ msleep(interval);
if ((rc = sata_scr_read(link, SCR_STATUS, &cur)))
return rc;
cur &= 0xf;
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;
}
int sata_link_resume(struct ata_link *link, const unsigned long *params,
unsigned long deadline)
{
- u32 scontrol;
+ u32 scontrol, serror;
int rc;
if ((rc = sata_scr_read(link, SCR_CONTROL, &scontrol)))
*/
msleep(200);
- return sata_link_debounce(link, params, deadline);
+ if ((rc = sata_link_debounce(link, params, deadline)))
+ return rc;
+
+ /* clear SError, some PHYs require this even for SRST to work */
+ if (!(rc = sata_scr_read(link, SCR_ERROR, &serror)))
+ rc = sata_scr_write(link, SCR_ERROR, serror);
+
+ return rc != -EINVAL ? rc : 0;
}
/**
const unsigned long *timing = sata_ehc_deb_timing(ehc);
int rc;
- /* handle link resume */
- if ((ehc->i.flags & ATA_EHI_RESUME_LINK) &&
- (link->flags & ATA_LFLAG_HRST_TO_RESUME))
- ehc->i.action |= ATA_EH_HARDRESET;
-
- /* Some PMPs don't work with only SRST, force hardreset if PMP
- * is supported.
- */
- if (ap->flags & ATA_FLAG_PMP)
- ehc->i.action |= ATA_EH_HARDRESET;
-
/* if we're about to do hardreset, nothing more to do */
if (ehc->i.action & ATA_EH_HARDRESET)
return 0;
"link for reset (errno=%d)\n", rc);
}
- /* Wait for !BSY if the controller can wait for the first D2H
- * Reg FIS and we don't know that no device is attached.
- */
- if (!(link->flags & ATA_LFLAG_SKIP_D2H_BSY) && !ata_link_offline(link)) {
- rc = ata_wait_ready(ap, deadline);
- if (rc && rc != -ENODEV) {
- ata_link_printk(link, KERN_WARNING, "device not ready "
- "(errno=%d), forcing hardreset\n", rc);
- ehc->i.action |= ATA_EH_HARDRESET;
- }
- }
-
- return 0;
-}
-
-/**
- * ata_std_softreset - reset host port via ATA SRST
- * @link: ATA link to reset
- * @classes: resulting classes of attached devices
- * @deadline: deadline jiffies for the operation
- *
- * Reset host port using ATA SRST.
- *
- * LOCKING:
- * Kernel thread context (may sleep)
- *
- * RETURNS:
- * 0 on success, -errno otherwise.
- */
-int ata_std_softreset(struct ata_link *link, unsigned int *classes,
- unsigned long deadline)
-{
- struct ata_port *ap = link->ap;
- unsigned int slave_possible = ap->flags & ATA_FLAG_SLAVE_POSS;
- unsigned int devmask = 0;
- int rc;
- u8 err;
-
- DPRINTK("ENTER\n");
-
- if (ata_link_offline(link)) {
- classes[0] = ATA_DEV_NONE;
- goto out;
- }
-
- /* determine if device 0/1 are present */
- if (ata_devchk(ap, 0))
- devmask |= (1 << 0);
- if (slave_possible && ata_devchk(ap, 1))
- devmask |= (1 << 1);
-
- /* select device 0 again */
- ap->ops->dev_select(ap, 0);
-
- /* issue bus reset */
- DPRINTK("about to softreset, devmask=%x\n", devmask);
- rc = ata_bus_softreset(ap, devmask, deadline);
- /* if link is occupied, -ENODEV too is an error */
- if (rc && (rc != -ENODEV || sata_scr_valid(link))) {
- ata_link_printk(link, KERN_ERR, "SRST failed (errno=%d)\n", rc);
- return rc;
- }
-
- /* determine by signature whether we have ATA or ATAPI devices */
- classes[0] = ata_dev_try_classify(&link->device[0],
- devmask & (1 << 0), &err);
- if (slave_possible && err != 0x81)
- classes[1] = ata_dev_try_classify(&link->device[1],
- devmask & (1 << 1), &err);
+ /* no point in trying softreset on offline link */
+ if (ata_phys_link_offline(link))
+ ehc->i.action &= ~ATA_EH_SOFTRESET;
- out:
- DPRINTK("EXIT, classes[0]=%u [1]=%u\n", classes[0], classes[1]);
return 0;
}
* @link: link to reset
* @timing: timing parameters { interval, duratinon, timeout } in msec
* @deadline: deadline jiffies for the operation
+ * @online: optional out parameter indicating link onlineness
+ * @check_ready: optional callback to check link readiness
*
* SATA phy-reset @link using DET bits of SControl register.
+ * After hardreset, link readiness is waited upon using
+ * ata_wait_ready() if @check_ready is specified. LLDs are
+ * allowed to not specify @check_ready and wait itself after this
+ * function returns. Device classification is LLD's
+ * responsibility.
+ *
+ * *@online is set to one iff reset succeeded and @link is online
+ * after reset.
*
* LOCKING:
* Kernel thread context (may sleep)
* 0 on success, -errno otherwise.
*/
int sata_link_hardreset(struct ata_link *link, const unsigned long *timing,
- unsigned long deadline)
+ unsigned long deadline,
+ bool *online, int (*check_ready)(struct ata_link *))
{
u32 scontrol;
int rc;
DPRINTK("ENTER\n");
+ if (online)
+ *online = false;
+
if (sata_set_spd_needed(link)) {
/* SATA spec says nothing about how to reconfigure
* spd. To be on the safe side, turn off phy during
/* bring link back */
rc = sata_link_resume(link, timing, deadline);
+ if (rc)
+ goto out;
+ /* if link is offline nothing more to do */
+ if (ata_phys_link_offline(link))
+ goto out;
+
+ /* Link is online. From this point, -ENODEV too is an error. */
+ if (online)
+ *online = true;
+
+ if (sata_pmp_supported(link->ap) && ata_is_host_link(link)) {
+ /* If PMP is supported, we have to do follow-up SRST.
+ * Some PMPs don't send D2H Reg FIS after hardreset if
+ * the first port is empty. Wait only for
+ * ATA_TMOUT_PMP_SRST_WAIT.
+ */
+ if (check_ready) {
+ unsigned long pmp_deadline;
+
+ 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);
+ }
+ rc = -EAGAIN;
+ goto out;
+ }
+
+ rc = 0;
+ if (check_ready)
+ rc = ata_wait_ready(link, deadline, check_ready);
out:
+ if (rc && rc != -EAGAIN) {
+ /* online is set iff link is online && reset succeeded */
+ if (online)
+ *online = false;
+ ata_link_printk(link, KERN_ERR,
+ "COMRESET failed (errno=%d)\n", rc);
+ }
DPRINTK("EXIT, rc=%d\n", rc);
return rc;
}
/**
- * sata_std_hardreset - reset host port via SATA phy reset
+ * sata_std_hardreset - COMRESET w/o waiting or classification
* @link: link to reset
* @class: resulting class of attached device
* @deadline: deadline jiffies for the operation
*
- * SATA phy-reset host port using DET bits of SControl register,
- * wait for !BSY and classify the attached device.
+ * Standard SATA COMRESET w/o waiting or classification.
*
* LOCKING:
* Kernel thread context (may sleep)
*
* RETURNS:
- * 0 on success, -errno otherwise.
+ * 0 if link offline, -EAGAIN if link online, -errno on errors.
*/
int sata_std_hardreset(struct ata_link *link, unsigned int *class,
unsigned long deadline)
{
- struct ata_port *ap = link->ap;
const unsigned long *timing = sata_ehc_deb_timing(&link->eh_context);
+ bool online;
int rc;
- DPRINTK("ENTER\n");
-
/* do hardreset */
- rc = sata_link_hardreset(link, timing, deadline);
- if (rc) {
- ata_link_printk(link, KERN_ERR,
- "COMRESET failed (errno=%d)\n", rc);
- return rc;
- }
-
- /* TODO: phy layer with polling, timeouts, etc. */
- if (ata_link_offline(link)) {
- *class = ATA_DEV_NONE;
- DPRINTK("EXIT, link offline\n");
- return 0;
- }
-
- /* wait a while before checking status */
- ata_wait_after_reset(ap, deadline);
-
- /* If PMP is supported, we have to do follow-up SRST. Note
- * that some PMPs don't send D2H Reg FIS after hardreset at
- * all if the first port is empty. Wait for it just for a
- * second and request follow-up SRST.
- */
- if (ap->flags & ATA_FLAG_PMP) {
- ata_wait_ready(ap, jiffies + HZ);
- return -EAGAIN;
- }
-
- rc = ata_wait_ready(ap, deadline);
- /* link occupied, -ENODEV too is an error */
- if (rc) {
- ata_link_printk(link, KERN_ERR,
- "COMRESET failed (errno=%d)\n", rc);
- return rc;
- }
-
- ap->ops->dev_select(ap, 0); /* probably unnecessary */
-
- *class = ata_dev_try_classify(link->device, 1, NULL);
-
- DPRINTK("EXIT, class=%u\n", *class);
- return 0;
+ rc = sata_link_hardreset(link, timing, deadline, &online, NULL);
+ return online ? -EAGAIN : rc;
}
/**
*/
void ata_std_postreset(struct ata_link *link, unsigned int *classes)
{
- struct ata_port *ap = link->ap;
u32 serror;
DPRINTK("ENTER\n");
- /* print link status */
- sata_print_link_status(link);
-
- /* clear SError */
- if (sata_scr_read(link, SCR_ERROR, &serror) == 0)
+ /* reset complete, clear SError */
+ if (!sata_scr_read(link, SCR_ERROR, &serror))
sata_scr_write(link, SCR_ERROR, serror);
- link->eh_info.serror = 0;
-
- /* is double-select really necessary? */
- if (classes[0] != ATA_DEV_NONE)
- ap->ops->dev_select(ap, 1);
- if (classes[1] != ATA_DEV_NONE)
- ap->ops->dev_select(ap, 0);
-
- /* bail out if no device is present */
- if (classes[0] == ATA_DEV_NONE && classes[1] == ATA_DEV_NONE) {
- DPRINTK("EXIT, no device\n");
- return;
- }
- /* set up device control */
- if (ap->ioaddr.ctl_addr)
- iowrite8(ap->ctl, ap->ioaddr.ctl_addr);
+ /* print link status */
+ sata_print_link_status(link);
DPRINTK("EXIT\n");
}
{ "SAMSUNG CD-ROM SN-124", "N001", ATA_HORKAGE_NODMA },
{ "Seagate STT20000A", NULL, ATA_HORKAGE_NODMA },
/* Odd clown on sil3726/4726 PMPs */
- { "Config Disk", NULL, ATA_HORKAGE_NODMA |
- ATA_HORKAGE_SKIP_PM },
+ { "Config Disk", NULL, ATA_HORKAGE_DISABLE },
/* Weird ATAPI devices */
{ "TORiSAN DVD-ROM DRD-N216", NULL, ATA_HORKAGE_MAX_SEC_128 },
+ { "QUANTUM DAT DAT72-000", NULL, ATA_HORKAGE_ATAPI_MOD16_DMA },
/* Devices we expect to fail diagnostics */
{ "Maxtor 7V300F0", "VA111630", ATA_HORKAGE_NONCQ },
{ "ST380817AS", "3.42", ATA_HORKAGE_NONCQ },
{ "ST3160023AS", "3.42", ATA_HORKAGE_NONCQ },
+ { "OCZ CORE_SSD", "02.10104", ATA_HORKAGE_NONCQ },
+
+ /* Seagate NCQ + FLUSH CACHE firmware bug */
+ { "ST31500341AS", "SD15", ATA_HORKAGE_NONCQ |
+ ATA_HORKAGE_FIRMWARE_WARN },
+ { "ST31500341AS", "SD16", ATA_HORKAGE_NONCQ |
+ ATA_HORKAGE_FIRMWARE_WARN },
+ { "ST31500341AS", "SD17", ATA_HORKAGE_NONCQ |
+ ATA_HORKAGE_FIRMWARE_WARN },
+ { "ST31500341AS", "SD18", ATA_HORKAGE_NONCQ |
+ ATA_HORKAGE_FIRMWARE_WARN },
+ { "ST31500341AS", "SD19", ATA_HORKAGE_NONCQ |
+ ATA_HORKAGE_FIRMWARE_WARN },
+
+ { "ST31000333AS", "SD15", ATA_HORKAGE_NONCQ |
+ ATA_HORKAGE_FIRMWARE_WARN },
+ { "ST31000333AS", "SD16", ATA_HORKAGE_NONCQ |
+ ATA_HORKAGE_FIRMWARE_WARN },
+ { "ST31000333AS", "SD17", ATA_HORKAGE_NONCQ |
+ ATA_HORKAGE_FIRMWARE_WARN },
+ { "ST31000333AS", "SD18", ATA_HORKAGE_NONCQ |
+ ATA_HORKAGE_FIRMWARE_WARN },
+ { "ST31000333AS", "SD19", ATA_HORKAGE_NONCQ |
+ ATA_HORKAGE_FIRMWARE_WARN },
+
+ { "ST3640623AS", "SD15", ATA_HORKAGE_NONCQ |
+ ATA_HORKAGE_FIRMWARE_WARN },
+ { "ST3640623AS", "SD16", ATA_HORKAGE_NONCQ |
+ ATA_HORKAGE_FIRMWARE_WARN },
+ { "ST3640623AS", "SD17", ATA_HORKAGE_NONCQ |
+ ATA_HORKAGE_FIRMWARE_WARN },
+ { "ST3640623AS", "SD18", ATA_HORKAGE_NONCQ |
+ ATA_HORKAGE_FIRMWARE_WARN },
+ { "ST3640623AS", "SD19", ATA_HORKAGE_NONCQ |
+ ATA_HORKAGE_FIRMWARE_WARN },
+
+ { "ST3640323AS", "SD15", ATA_HORKAGE_NONCQ |
+ ATA_HORKAGE_FIRMWARE_WARN },
+ { "ST3640323AS", "SD16", ATA_HORKAGE_NONCQ |
+ ATA_HORKAGE_FIRMWARE_WARN },
+ { "ST3640323AS", "SD17", ATA_HORKAGE_NONCQ |
+ ATA_HORKAGE_FIRMWARE_WARN },
+ { "ST3640323AS", "SD18", ATA_HORKAGE_NONCQ |
+ ATA_HORKAGE_FIRMWARE_WARN },
+ { "ST3640323AS", "SD19", ATA_HORKAGE_NONCQ |
+ ATA_HORKAGE_FIRMWARE_WARN },
+
+ { "ST3320813AS", "SD15", ATA_HORKAGE_NONCQ |
+ ATA_HORKAGE_FIRMWARE_WARN },
+ { "ST3320813AS", "SD16", ATA_HORKAGE_NONCQ |
+ ATA_HORKAGE_FIRMWARE_WARN },
+ { "ST3320813AS", "SD17", ATA_HORKAGE_NONCQ |
+ ATA_HORKAGE_FIRMWARE_WARN },
+ { "ST3320813AS", "SD18", ATA_HORKAGE_NONCQ |
+ ATA_HORKAGE_FIRMWARE_WARN },
+ { "ST3320813AS", "SD19", ATA_HORKAGE_NONCQ |
+ ATA_HORKAGE_FIRMWARE_WARN },
+
+ { "ST3320613AS", "SD15", ATA_HORKAGE_NONCQ |
+ ATA_HORKAGE_FIRMWARE_WARN },
+ { "ST3320613AS", "SD16", ATA_HORKAGE_NONCQ |
+ ATA_HORKAGE_FIRMWARE_WARN },
+ { "ST3320613AS", "SD17", ATA_HORKAGE_NONCQ |
+ ATA_HORKAGE_FIRMWARE_WARN },
+ { "ST3320613AS", "SD18", ATA_HORKAGE_NONCQ |
+ ATA_HORKAGE_FIRMWARE_WARN },
+ { "ST3320613AS", "SD19", ATA_HORKAGE_NONCQ |
+ ATA_HORKAGE_FIRMWARE_WARN },
/* Blacklist entries taken from Silicon Image 3124/3132
Windows driver .inf file - also several Linux problem reports */
/* Devices which get the IVB wrong */
{ "QUANTUM FIREBALLlct10 05", "A03.0900", ATA_HORKAGE_IVB, },
+ /* Maybe we should just blacklist TSSTcorp... */
+ { "TSSTcorp CDDVDW SH-S202H", "SB00", ATA_HORKAGE_IVB, },
+ { "TSSTcorp CDDVDW SH-S202H", "SB01", ATA_HORKAGE_IVB, },
{ "TSSTcorp CDDVDW SH-S202J", "SB00", ATA_HORKAGE_IVB, },
{ "TSSTcorp CDDVDW SH-S202J", "SB01", ATA_HORKAGE_IVB, },
{ "TSSTcorp CDDVDW SH-S202N", "SB00", ATA_HORKAGE_IVB, },
{ "TSSTcorp CDDVDW SH-S202N", "SB01", ATA_HORKAGE_IVB, },
+ /* Devices that do not need bridging limits applied */
+ { "MTRON MSP-SATA*", NULL, ATA_HORKAGE_BRIDGE_OK, },
+
+ /* Devices which aren't very happy with higher link speeds */
+ { "WD My Book", NULL, ATA_HORKAGE_1_5_GBPS, },
+
/* End Marker */
{ }
};
}
/**
+ * cable_is_40wire - 40/80/SATA decider
+ * @ap: port to consider
+ *
+ * This function encapsulates the policy for speed management
+ * in one place. At the moment we don't cache the result but
+ * there is a good case for setting ap->cbl to the result when
+ * we are called with unknown cables (and figuring out if it
+ * impacts hotplug at all).
+ *
+ * Return 1 if the cable appears to be 40 wire.
+ */
+
+static int cable_is_40wire(struct ata_port *ap)
+{
+ struct ata_link *link;
+ struct ata_device *dev;
+
+ /* If the controller thinks we are 40 wire, we are. */
+ if (ap->cbl == ATA_CBL_PATA40)
+ return 1;
+
+ /* If the controller thinks we are 80 wire, we are. */
+ if (ap->cbl == ATA_CBL_PATA80 || ap->cbl == ATA_CBL_SATA)
+ return 0;
+
+ /* If the system is known to be 40 wire short cable (eg
+ * laptop), then we allow 80 wire modes even if the drive
+ * isn't sure.
+ */
+ if (ap->cbl == ATA_CBL_PATA40_SHORT)
+ return 0;
+
+ /* If the controller doesn't know, we scan.
+ *
+ * Note: We look for all 40 wire detects at this point. Any
+ * 80 wire detect is taken to be 80 wire cable because
+ * - in many setups only the one drive (slave if present) will
+ * give a valid detect
+ * - if you have a non detect capable drive you don't want it
+ * to colour the choice
+ */
+ ata_for_each_link(link, ap, EDGE) {
+ ata_for_each_dev(dev, link, ENABLED) {
+ if (!ata_is_40wire(dev))
+ return 0;
+ }
+ }
+ return 1;
+}
+
+/**
* ata_dev_xfermask - Compute supported xfermask of the given device
* @dev: Device to compute xfermask for
*
*/
if (xfer_mask & (0xF8 << ATA_SHIFT_UDMA))
/* UDMA/44 or higher would be available */
- if ((ap->cbl == ATA_CBL_PATA40) ||
- (ata_is_40wire(dev) &&
- (ap->cbl == ATA_CBL_PATA_UNK ||
- ap->cbl == ATA_CBL_PATA80))) {
+ if (cable_is_40wire(ap)) {
ata_dev_printk(dev, KERN_WARNING,
"limited to UDMA/33 due to 40-wire cable\n");
xfer_mask &= ~(0xF8 << ATA_SHIFT_UDMA);
struct scatterlist *sg = qc->sg;
int dir = qc->dma_dir;
- WARN_ON(sg == NULL);
+ WARN_ON_ONCE(sg == NULL);
VPRINTK("unmapping %u sg elements\n", qc->n_elem);
}
/**
- * ata_fill_sg - Fill PCI IDE PRD table
- * @qc: Metadata associated with taskfile to be transferred
+ * atapi_check_dma - Check whether ATAPI DMA can be supported
+ * @qc: Metadata associated with taskfile to check
*
- * Fill PCI IDE PRD (scatter-gather) table with segments
- * associated with the current disk command.
+ * Allow low-level driver to filter ATA PACKET commands, returning
+ * a status indicating whether or not it is OK to use DMA for the
+ * supplied PACKET command.
*
* LOCKING:
* spin_lock_irqsave(host lock)
*
+ * RETURNS: 0 when ATAPI DMA can be used
+ * nonzero otherwise
*/
-static void ata_fill_sg(struct ata_queued_cmd *qc)
+int atapi_check_dma(struct ata_queued_cmd *qc)
{
struct ata_port *ap = qc->ap;
- struct scatterlist *sg;
- unsigned int si, pi;
- pi = 0;
- for_each_sg(qc->sg, sg, qc->n_elem, si) {
- u32 addr, offset;
- u32 sg_len, len;
+ /* Don't allow DMA if it isn't multiple of 16 bytes. Quite a
+ * few ATAPI devices choke on such DMA requests.
+ */
+ if (!(qc->dev->horkage & ATA_HORKAGE_ATAPI_MOD16_DMA) &&
+ unlikely(qc->nbytes & 15))
+ return 1;
- /* determine if physical DMA addr spans 64K boundary.
- * Note h/w doesn't support 64-bit, so we unconditionally
- * truncate dma_addr_t to u32.
- */
- addr = (u32) sg_dma_address(sg);
- sg_len = sg_dma_len(sg);
-
- while (sg_len) {
- offset = addr & 0xffff;
- len = sg_len;
- if ((offset + sg_len) > 0x10000)
- len = 0x10000 - offset;
-
- ap->prd[pi].addr = cpu_to_le32(addr);
- ap->prd[pi].flags_len = cpu_to_le32(len & 0xffff);
- VPRINTK("PRD[%u] = (0x%X, 0x%X)\n", pi, addr, len);
-
- pi++;
- sg_len -= len;
- addr += len;
- }
- }
+ if (ap->ops->check_atapi_dma)
+ return ap->ops->check_atapi_dma(qc);
- ap->prd[pi - 1].flags_len |= cpu_to_le32(ATA_PRD_EOT);
+ return 0;
}
/**
- * ata_fill_sg_dumb - Fill PCI IDE PRD table
- * @qc: Metadata associated with taskfile to be transferred
+ * ata_std_qc_defer - Check whether a qc needs to be deferred
+ * @qc: ATA command in question
*
- * Fill PCI IDE PRD (scatter-gather) table with segments
- * associated with the current disk command. Perform the fill
- * so that we avoid writing any length 64K records for
- * controllers that don't follow the spec.
+ * Non-NCQ commands cannot run with any other command, NCQ or
+ * not. As upper layer only knows the queue depth, we are
+ * responsible for maintaining exclusion. This function checks
+ * whether a new command @qc can be issued.
*
* LOCKING:
* spin_lock_irqsave(host lock)
*
+ * RETURNS:
+ * ATA_DEFER_* if deferring is needed, 0 otherwise.
*/
-static void ata_fill_sg_dumb(struct ata_queued_cmd *qc)
+int ata_std_qc_defer(struct ata_queued_cmd *qc)
{
- struct ata_port *ap = qc->ap;
- struct scatterlist *sg;
- unsigned int si, pi;
+ struct ata_link *link = qc->dev->link;
- pi = 0;
- for_each_sg(qc->sg, sg, qc->n_elem, si) {
- u32 addr, offset;
- u32 sg_len, len, blen;
-
- /* determine if physical DMA addr spans 64K boundary.
- * Note h/w doesn't support 64-bit, so we unconditionally
- * truncate dma_addr_t to u32.
- */
- addr = (u32) sg_dma_address(sg);
- sg_len = sg_dma_len(sg);
-
- while (sg_len) {
- offset = addr & 0xffff;
- len = sg_len;
- if ((offset + sg_len) > 0x10000)
- len = 0x10000 - offset;
-
- blen = len & 0xffff;
- ap->prd[pi].addr = cpu_to_le32(addr);
- if (blen == 0) {
- /* Some PATA chipsets like the CS5530 can't
- cope with 0x0000 meaning 64K as the spec says */
- ap->prd[pi].flags_len = cpu_to_le32(0x8000);
- blen = 0x8000;
- ap->prd[++pi].addr = cpu_to_le32(addr + 0x8000);
- }
- ap->prd[pi].flags_len = cpu_to_le32(blen);
- VPRINTK("PRD[%u] = (0x%X, 0x%X)\n", pi, addr, len);
-
- pi++;
- sg_len -= len;
- addr += len;
- }
- }
-
- ap->prd[pi - 1].flags_len |= cpu_to_le32(ATA_PRD_EOT);
-}
-
-/**
- * ata_check_atapi_dma - Check whether ATAPI DMA can be supported
- * @qc: Metadata associated with taskfile to check
- *
- * Allow low-level driver to filter ATA PACKET commands, returning
- * a status indicating whether or not it is OK to use DMA for the
- * supplied PACKET command.
- *
- * LOCKING:
- * spin_lock_irqsave(host lock)
- *
- * RETURNS: 0 when ATAPI DMA can be used
- * nonzero otherwise
- */
-int ata_check_atapi_dma(struct ata_queued_cmd *qc)
-{
- struct ata_port *ap = qc->ap;
-
- /* Don't allow DMA if it isn't multiple of 16 bytes. Quite a
- * few ATAPI devices choke on such DMA requests.
- */
- if (unlikely(qc->nbytes & 15))
- return 1;
-
- if (ap->ops->check_atapi_dma)
- return ap->ops->check_atapi_dma(qc);
-
- return 0;
-}
-
-/**
- * ata_std_qc_defer - Check whether a qc needs to be deferred
- * @qc: ATA command in question
- *
- * Non-NCQ commands cannot run with any other command, NCQ or
- * not. As upper layer only knows the queue depth, we are
- * responsible for maintaining exclusion. This function checks
- * whether a new command @qc can be issued.
- *
- * LOCKING:
- * spin_lock_irqsave(host lock)
- *
- * RETURNS:
- * ATA_DEFER_* if deferring is needed, 0 otherwise.
- */
-int ata_std_qc_defer(struct ata_queued_cmd *qc)
-{
- struct ata_link *link = qc->dev->link;
-
- if (qc->tf.protocol == ATA_PROT_NCQ) {
- if (!ata_tag_valid(link->active_tag))
- return 0;
- } else {
- if (!ata_tag_valid(link->active_tag) && !link->sactive)
- return 0;
- }
+ if (qc->tf.protocol == ATA_PROT_NCQ) {
+ if (!ata_tag_valid(link->active_tag))
+ return 0;
+ } else {
+ if (!ata_tag_valid(link->active_tag) && !link->sactive)
+ return 0;
+ }
return ATA_DEFER_LINK;
}
-/**
- * ata_qc_prep - Prepare taskfile for submission
- * @qc: Metadata associated with taskfile to be prepared
- *
- * Prepare ATA taskfile for submission.
- *
- * LOCKING:
- * spin_lock_irqsave(host lock)
- */
-void ata_qc_prep(struct ata_queued_cmd *qc)
-{
- if (!(qc->flags & ATA_QCFLAG_DMAMAP))
- return;
-
- ata_fill_sg(qc);
-}
-
-/**
- * ata_dumb_qc_prep - Prepare taskfile for submission
- * @qc: Metadata associated with taskfile to be prepared
- *
- * Prepare ATA taskfile for submission.
- *
- * LOCKING:
- * spin_lock_irqsave(host lock)
- */
-void ata_dumb_qc_prep(struct ata_queued_cmd *qc)
-{
- if (!(qc->flags & ATA_QCFLAG_DMAMAP))
- return;
-
- ata_fill_sg_dumb(qc);
-}
-
void ata_noop_qc_prep(struct ata_queued_cmd *qc) { }
/**
}
/**
- * ata_data_xfer - Transfer data by PIO
- * @dev: device to target
- * @buf: data buffer
- * @buflen: buffer length
- * @rw: read/write
- *
- * Transfer data from/to the device data register by PIO.
- *
- * LOCKING:
- * Inherited from caller.
- *
- * RETURNS:
- * Bytes consumed.
- */
-unsigned int ata_data_xfer(struct ata_device *dev, unsigned char *buf,
- unsigned int buflen, int rw)
-{
- struct ata_port *ap = dev->link->ap;
- void __iomem *data_addr = ap->ioaddr.data_addr;
- unsigned int words = buflen >> 1;
-
- /* Transfer multiple of 2 bytes */
- if (rw == READ)
- ioread16_rep(data_addr, buf, words);
- else
- iowrite16_rep(data_addr, buf, words);
-
- /* Transfer trailing 1 byte, if any. */
- if (unlikely(buflen & 0x01)) {
- __le16 align_buf[1] = { 0 };
- unsigned char *trailing_buf = buf + buflen - 1;
-
- if (rw == READ) {
- align_buf[0] = cpu_to_le16(ioread16(data_addr));
- memcpy(trailing_buf, align_buf, 1);
- } else {
- memcpy(align_buf, trailing_buf, 1);
- iowrite16(le16_to_cpu(align_buf[0]), data_addr);
- }
- words++;
- }
-
- return words << 1;
-}
-
-/**
- * ata_data_xfer_noirq - Transfer data by PIO
- * @dev: device to target
- * @buf: data buffer
- * @buflen: buffer length
- * @rw: read/write
- *
- * Transfer data from/to the device data register by PIO. Do the
- * transfer with interrupts disabled.
- *
- * LOCKING:
- * Inherited from caller.
- *
- * RETURNS:
- * Bytes consumed.
- */
-unsigned int ata_data_xfer_noirq(struct ata_device *dev, unsigned char *buf,
- unsigned int buflen, int rw)
-{
- unsigned long flags;
- unsigned int consumed;
-
- local_irq_save(flags);
- consumed = ata_data_xfer(dev, buf, buflen, rw);
- local_irq_restore(flags);
-
- return consumed;
-}
-
-
-/**
- * ata_pio_sector - Transfer a sector of data.
- * @qc: Command on going
- *
- * Transfer qc->sect_size bytes of data from/to the ATA device.
- *
- * LOCKING:
- * Inherited from caller.
- */
-
-static void ata_pio_sector(struct ata_queued_cmd *qc)
-{
- int do_write = (qc->tf.flags & ATA_TFLAG_WRITE);
- struct ata_port *ap = qc->ap;
- struct page *page;
- unsigned int offset;
- unsigned char *buf;
-
- if (qc->curbytes == qc->nbytes - qc->sect_size)
- ap->hsm_task_state = HSM_ST_LAST;
-
- page = sg_page(qc->cursg);
- offset = qc->cursg->offset + qc->cursg_ofs;
-
- /* get the current page and offset */
- page = nth_page(page, (offset >> PAGE_SHIFT));
- offset %= PAGE_SIZE;
-
- DPRINTK("data %s\n", qc->tf.flags & ATA_TFLAG_WRITE ? "write" : "read");
-
- if (PageHighMem(page)) {
- unsigned long flags;
-
- /* FIXME: use a bounce buffer */
- local_irq_save(flags);
- buf = kmap_atomic(page, KM_IRQ0);
-
- /* do the actual data transfer */
- ap->ops->data_xfer(qc->dev, buf + offset, qc->sect_size, do_write);
-
- kunmap_atomic(buf, KM_IRQ0);
- local_irq_restore(flags);
- } else {
- buf = page_address(page);
- ap->ops->data_xfer(qc->dev, buf + offset, qc->sect_size, do_write);
- }
-
- qc->curbytes += qc->sect_size;
- qc->cursg_ofs += qc->sect_size;
-
- if (qc->cursg_ofs == qc->cursg->length) {
- qc->cursg = sg_next(qc->cursg);
- qc->cursg_ofs = 0;
- }
-}
-
-/**
- * ata_pio_sectors - Transfer one or many sectors.
- * @qc: Command on going
- *
- * Transfer one or many sectors of data from/to the
- * ATA device for the DRQ request.
- *
- * LOCKING:
- * Inherited from caller.
- */
-
-static void ata_pio_sectors(struct ata_queued_cmd *qc)
-{
- if (is_multi_taskfile(&qc->tf)) {
- /* READ/WRITE MULTIPLE */
- unsigned int nsect;
-
- WARN_ON(qc->dev->multi_count == 0);
-
- nsect = min((qc->nbytes - qc->curbytes) / qc->sect_size,
- qc->dev->multi_count);
- while (nsect--)
- ata_pio_sector(qc);
- } else
- ata_pio_sector(qc);
-
- ata_altstatus(qc->ap); /* flush */
-}
-
-/**
- * atapi_send_cdb - Write CDB bytes to hardware
- * @ap: Port to which ATAPI device is attached.
- * @qc: Taskfile currently active
- *
- * When device has indicated its readiness to accept
- * a CDB, this function is called. Send the CDB.
- *
- * LOCKING:
- * caller.
- */
-
-static void atapi_send_cdb(struct ata_port *ap, struct ata_queued_cmd *qc)
-{
- /* send SCSI cdb */
- DPRINTK("send cdb\n");
- WARN_ON(qc->dev->cdb_len < 12);
-
- ap->ops->data_xfer(qc->dev, qc->cdb, qc->dev->cdb_len, 1);
- ata_altstatus(ap); /* flush */
-
- switch (qc->tf.protocol) {
- case ATAPI_PROT_PIO:
- ap->hsm_task_state = HSM_ST;
- break;
- case ATAPI_PROT_NODATA:
- ap->hsm_task_state = HSM_ST_LAST;
- break;
- case ATAPI_PROT_DMA:
- ap->hsm_task_state = HSM_ST_LAST;
- /* initiate bmdma */
- ap->ops->bmdma_start(qc);
- break;
- }
-}
-
-/**
- * __atapi_pio_bytes - Transfer data from/to the ATAPI device.
- * @qc: Command on going
- * @bytes: number of bytes
- *
- * Transfer Transfer data from/to the ATAPI device.
- *
- * LOCKING:
- * Inherited from caller.
- *
- */
-static int __atapi_pio_bytes(struct ata_queued_cmd *qc, unsigned int bytes)
-{
- int rw = (qc->tf.flags & ATA_TFLAG_WRITE) ? WRITE : READ;
- struct ata_port *ap = qc->ap;
- struct ata_device *dev = qc->dev;
- struct ata_eh_info *ehi = &dev->link->eh_info;
- struct scatterlist *sg;
- struct page *page;
- unsigned char *buf;
- unsigned int offset, count, consumed;
-
-next_sg:
- sg = qc->cursg;
- if (unlikely(!sg)) {
- ata_ehi_push_desc(ehi, "unexpected or too much trailing data "
- "buf=%u cur=%u bytes=%u",
- qc->nbytes, qc->curbytes, bytes);
- return -1;
- }
-
- page = sg_page(sg);
- offset = sg->offset + qc->cursg_ofs;
-
- /* get the current page and offset */
- page = nth_page(page, (offset >> PAGE_SHIFT));
- offset %= PAGE_SIZE;
-
- /* don't overrun current sg */
- count = min(sg->length - qc->cursg_ofs, bytes);
-
- /* don't cross page boundaries */
- count = min(count, (unsigned int)PAGE_SIZE - offset);
-
- DPRINTK("data %s\n", qc->tf.flags & ATA_TFLAG_WRITE ? "write" : "read");
-
- if (PageHighMem(page)) {
- unsigned long flags;
-
- /* FIXME: use bounce buffer */
- local_irq_save(flags);
- buf = kmap_atomic(page, KM_IRQ0);
-
- /* do the actual data transfer */
- consumed = ap->ops->data_xfer(dev, buf + offset, count, rw);
-
- kunmap_atomic(buf, KM_IRQ0);
- local_irq_restore(flags);
- } else {
- buf = page_address(page);
- consumed = ap->ops->data_xfer(dev, buf + offset, count, rw);
- }
-
- bytes -= min(bytes, consumed);
- qc->curbytes += count;
- qc->cursg_ofs += count;
-
- if (qc->cursg_ofs == sg->length) {
- qc->cursg = sg_next(qc->cursg);
- qc->cursg_ofs = 0;
- }
-
- /* consumed can be larger than count only for the last transfer */
- WARN_ON(qc->cursg && count != consumed);
-
- if (bytes)
- goto next_sg;
- return 0;
-}
-
-/**
- * atapi_pio_bytes - Transfer data from/to the ATAPI device.
- * @qc: Command on going
- *
- * Transfer Transfer data from/to the ATAPI device.
- *
- * LOCKING:
- * Inherited from caller.
- */
-
-static void atapi_pio_bytes(struct ata_queued_cmd *qc)
-{
- struct ata_port *ap = qc->ap;
- struct ata_device *dev = qc->dev;
- struct ata_eh_info *ehi = &dev->link->eh_info;
- unsigned int ireason, bc_lo, bc_hi, bytes;
- int i_write, do_write = (qc->tf.flags & ATA_TFLAG_WRITE) ? 1 : 0;
-
- /* Abuse qc->result_tf for temp storage of intermediate TF
- * here to save some kernel stack usage.
- * For normal completion, qc->result_tf is not relevant. For
- * error, qc->result_tf is later overwritten by ata_qc_complete().
- * So, the correctness of qc->result_tf is not affected.
- */
- ap->ops->tf_read(ap, &qc->result_tf);
- ireason = qc->result_tf.nsect;
- bc_lo = qc->result_tf.lbam;
- bc_hi = qc->result_tf.lbah;
- bytes = (bc_hi << 8) | bc_lo;
-
- /* shall be cleared to zero, indicating xfer of data */
- if (unlikely(ireason & (1 << 0)))
- goto atapi_check;
-
- /* make sure transfer direction matches expected */
- i_write = ((ireason & (1 << 1)) == 0) ? 1 : 0;
- if (unlikely(do_write != i_write))
- goto atapi_check;
-
- if (unlikely(!bytes))
- goto atapi_check;
-
- VPRINTK("ata%u: xfering %d bytes\n", ap->print_id, bytes);
-
- if (unlikely(__atapi_pio_bytes(qc, bytes)))
- goto err_out;
- ata_altstatus(ap); /* flush */
-
- return;
-
- atapi_check:
- ata_ehi_push_desc(ehi, "ATAPI check failed (ireason=0x%x bytes=%u)",
- ireason, bytes);
- err_out:
- qc->err_mask |= AC_ERR_HSM;
- ap->hsm_task_state = HSM_ST_ERR;
-}
-
-/**
- * ata_hsm_ok_in_wq - Check if the qc can be handled in the workqueue.
- * @ap: the target ata_port
- * @qc: qc on going
- *
- * RETURNS:
- * 1 if ok in workqueue, 0 otherwise.
- */
-
-static inline int ata_hsm_ok_in_wq(struct ata_port *ap, struct ata_queued_cmd *qc)
-{
- if (qc->tf.flags & ATA_TFLAG_POLLING)
- return 1;
-
- if (ap->hsm_task_state == HSM_ST_FIRST) {
- if (qc->tf.protocol == ATA_PROT_PIO &&
- (qc->tf.flags & ATA_TFLAG_WRITE))
- return 1;
-
- if (ata_is_atapi(qc->tf.protocol) &&
- !(qc->dev->flags & ATA_DFLAG_CDB_INTR))
- return 1;
- }
-
- return 0;
-}
-
-/**
- * ata_hsm_qc_complete - finish a qc running on standard HSM
- * @qc: Command to complete
- * @in_wq: 1 if called from workqueue, 0 otherwise
- *
- * Finish @qc which is running on standard HSM.
- *
- * LOCKING:
- * If @in_wq is zero, spin_lock_irqsave(host lock).
- * Otherwise, none on entry and grabs host lock.
- */
-static void ata_hsm_qc_complete(struct ata_queued_cmd *qc, int in_wq)
-{
- struct ata_port *ap = qc->ap;
- unsigned long flags;
-
- if (ap->ops->error_handler) {
- if (in_wq) {
- spin_lock_irqsave(ap->lock, flags);
-
- /* EH might have kicked in while host lock is
- * released.
- */
- qc = ata_qc_from_tag(ap, qc->tag);
- if (qc) {
- if (likely(!(qc->err_mask & AC_ERR_HSM))) {
- ap->ops->irq_on(ap);
- ata_qc_complete(qc);
- } else
- ata_port_freeze(ap);
- }
-
- spin_unlock_irqrestore(ap->lock, flags);
- } else {
- if (likely(!(qc->err_mask & AC_ERR_HSM)))
- ata_qc_complete(qc);
- else
- ata_port_freeze(ap);
- }
- } else {
- if (in_wq) {
- spin_lock_irqsave(ap->lock, flags);
- ap->ops->irq_on(ap);
- ata_qc_complete(qc);
- spin_unlock_irqrestore(ap->lock, flags);
- } else
- ata_qc_complete(qc);
- }
-}
-
-/**
- * ata_hsm_move - move the HSM to the next state.
- * @ap: the target ata_port
- * @qc: qc on going
- * @status: current device status
- * @in_wq: 1 if called from workqueue, 0 otherwise
- *
- * RETURNS:
- * 1 when poll next status needed, 0 otherwise.
- */
-int ata_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc,
- u8 status, int in_wq)
-{
- unsigned long flags = 0;
- int poll_next;
-
- WARN_ON((qc->flags & ATA_QCFLAG_ACTIVE) == 0);
-
- /* Make sure ata_qc_issue_prot() does not throw things
- * like DMA polling into the workqueue. Notice that
- * in_wq is not equivalent to (qc->tf.flags & ATA_TFLAG_POLLING).
- */
- WARN_ON(in_wq != ata_hsm_ok_in_wq(ap, qc));
-
-fsm_start:
- DPRINTK("ata%u: protocol %d task_state %d (dev_stat 0x%X)\n",
- ap->print_id, qc->tf.protocol, ap->hsm_task_state, status);
-
- switch (ap->hsm_task_state) {
- case HSM_ST_FIRST:
- /* Send first data block or PACKET CDB */
-
- /* If polling, we will stay in the work queue after
- * sending the data. Otherwise, interrupt handler
- * takes over after sending the data.
- */
- poll_next = (qc->tf.flags & ATA_TFLAG_POLLING);
-
- /* check device status */
- if (unlikely((status & ATA_DRQ) == 0)) {
- /* handle BSY=0, DRQ=0 as error */
- if (likely(status & (ATA_ERR | ATA_DF)))
- /* device stops HSM for abort/error */
- qc->err_mask |= AC_ERR_DEV;
- else
- /* HSM violation. Let EH handle this */
- qc->err_mask |= AC_ERR_HSM;
-
- ap->hsm_task_state = HSM_ST_ERR;
- goto fsm_start;
- }
-
- /* Device should not ask for data transfer (DRQ=1)
- * when it finds something wrong.
- * We ignore DRQ here and stop the HSM by
- * changing hsm_task_state to HSM_ST_ERR and
- * let the EH abort the command or reset the device.
- */
- if (unlikely(status & (ATA_ERR | ATA_DF))) {
- /* Some ATAPI tape drives forget to clear the ERR bit
- * when doing the next command (mostly request sense).
- * We ignore ERR here to workaround and proceed sending
- * the CDB.
- */
- if (!(qc->dev->horkage & ATA_HORKAGE_STUCK_ERR)) {
- ata_port_printk(ap, KERN_WARNING,
- "DRQ=1 with device error, "
- "dev_stat 0x%X\n", status);
- qc->err_mask |= AC_ERR_HSM;
- ap->hsm_task_state = HSM_ST_ERR;
- goto fsm_start;
- }
- }
-
- /* Send the CDB (atapi) or the first data block (ata pio out).
- * During the state transition, interrupt handler shouldn't
- * be invoked before the data transfer is complete and
- * hsm_task_state is changed. Hence, the following locking.
- */
- if (in_wq)
- spin_lock_irqsave(ap->lock, flags);
-
- if (qc->tf.protocol == ATA_PROT_PIO) {
- /* PIO data out protocol.
- * send first data block.
- */
-
- /* ata_pio_sectors() might change the state
- * to HSM_ST_LAST. so, the state is changed here
- * before ata_pio_sectors().
- */
- ap->hsm_task_state = HSM_ST;
- ata_pio_sectors(qc);
- } else
- /* send CDB */
- atapi_send_cdb(ap, qc);
-
- if (in_wq)
- spin_unlock_irqrestore(ap->lock, flags);
-
- /* if polling, ata_pio_task() handles the rest.
- * otherwise, interrupt handler takes over from here.
- */
- break;
-
- case HSM_ST:
- /* complete command or read/write the data register */
- if (qc->tf.protocol == ATAPI_PROT_PIO) {
- /* ATAPI PIO protocol */
- if ((status & ATA_DRQ) == 0) {
- /* No more data to transfer or device error.
- * Device error will be tagged in HSM_ST_LAST.
- */
- ap->hsm_task_state = HSM_ST_LAST;
- goto fsm_start;
- }
-
- /* Device should not ask for data transfer (DRQ=1)
- * when it finds something wrong.
- * We ignore DRQ here and stop the HSM by
- * changing hsm_task_state to HSM_ST_ERR and
- * let the EH abort the command or reset the device.
- */
- if (unlikely(status & (ATA_ERR | ATA_DF))) {
- ata_port_printk(ap, KERN_WARNING, "DRQ=1 with "
- "device error, dev_stat 0x%X\n",
- status);
- qc->err_mask |= AC_ERR_HSM;
- ap->hsm_task_state = HSM_ST_ERR;
- goto fsm_start;
- }
-
- atapi_pio_bytes(qc);
-
- if (unlikely(ap->hsm_task_state == HSM_ST_ERR))
- /* bad ireason reported by device */
- goto fsm_start;
-
- } else {
- /* ATA PIO protocol */
- if (unlikely((status & ATA_DRQ) == 0)) {
- /* handle BSY=0, DRQ=0 as error */
- if (likely(status & (ATA_ERR | ATA_DF)))
- /* device stops HSM for abort/error */
- qc->err_mask |= AC_ERR_DEV;
- else
- /* HSM violation. Let EH handle this.
- * Phantom devices also trigger this
- * condition. Mark hint.
- */
- qc->err_mask |= AC_ERR_HSM |
- AC_ERR_NODEV_HINT;
-
- ap->hsm_task_state = HSM_ST_ERR;
- goto fsm_start;
- }
-
- /* For PIO reads, some devices may ask for
- * data transfer (DRQ=1) alone with ERR=1.
- * We respect DRQ here and transfer one
- * block of junk data before changing the
- * hsm_task_state to HSM_ST_ERR.
- *
- * For PIO writes, ERR=1 DRQ=1 doesn't make
- * sense since the data block has been
- * transferred to the device.
- */
- if (unlikely(status & (ATA_ERR | ATA_DF))) {
- /* data might be corrputed */
- qc->err_mask |= AC_ERR_DEV;
-
- if (!(qc->tf.flags & ATA_TFLAG_WRITE)) {
- ata_pio_sectors(qc);
- status = ata_wait_idle(ap);
- }
-
- if (status & (ATA_BUSY | ATA_DRQ))
- qc->err_mask |= AC_ERR_HSM;
-
- /* ata_pio_sectors() might change the
- * state to HSM_ST_LAST. so, the state
- * is changed after ata_pio_sectors().
- */
- ap->hsm_task_state = HSM_ST_ERR;
- goto fsm_start;
- }
-
- ata_pio_sectors(qc);
-
- if (ap->hsm_task_state == HSM_ST_LAST &&
- (!(qc->tf.flags & ATA_TFLAG_WRITE))) {
- /* all data read */
- status = ata_wait_idle(ap);
- goto fsm_start;
- }
- }
-
- poll_next = 1;
- break;
-
- case HSM_ST_LAST:
- if (unlikely(!ata_ok(status))) {
- qc->err_mask |= __ac_err_mask(status);
- ap->hsm_task_state = HSM_ST_ERR;
- goto fsm_start;
- }
-
- /* no more data to transfer */
- DPRINTK("ata%u: dev %u command complete, drv_stat 0x%x\n",
- ap->print_id, qc->dev->devno, status);
-
- WARN_ON(qc->err_mask);
-
- ap->hsm_task_state = HSM_ST_IDLE;
-
- /* complete taskfile transaction */
- ata_hsm_qc_complete(qc, in_wq);
-
- poll_next = 0;
- break;
-
- case HSM_ST_ERR:
- /* make sure qc->err_mask is available to
- * know what's wrong and recover
- */
- WARN_ON(qc->err_mask == 0);
-
- ap->hsm_task_state = HSM_ST_IDLE;
-
- /* complete taskfile transaction */
- ata_hsm_qc_complete(qc, in_wq);
-
- poll_next = 0;
- break;
- default:
- poll_next = 0;
- BUG();
- }
-
- return poll_next;
-}
-
-static void ata_pio_task(struct work_struct *work)
-{
- struct ata_port *ap =
- container_of(work, struct ata_port, port_task.work);
- struct ata_queued_cmd *qc = ap->port_task_data;
- u8 status;
- int poll_next;
-
-fsm_start:
- WARN_ON(ap->hsm_task_state == HSM_ST_IDLE);
-
- /*
- * This is purely heuristic. This is a fast path.
- * Sometimes when we enter, BSY will be cleared in
- * a chk-status or two. If not, the drive is probably seeking
- * or something. Snooze for a couple msecs, then
- * chk-status again. If still busy, queue delayed work.
- */
- status = ata_busy_wait(ap, ATA_BUSY, 5);
- if (status & ATA_BUSY) {
- msleep(2);
- status = ata_busy_wait(ap, ATA_BUSY, 10);
- if (status & ATA_BUSY) {
- ata_pio_queue_task(ap, qc, ATA_SHORT_PAUSE);
- return;
- }
- }
-
- /* move the HSM */
- poll_next = ata_hsm_move(ap, qc, status, 1);
-
- /* another command or interrupt handler
- * may be running at this point.
- */
- if (poll_next)
- goto fsm_start;
-}
-
-/**
* ata_qc_new - Request an available ATA command, for queueing
- * @ap: Port associated with device @dev
- * @dev: Device from whom we request an available command structure
+ * @ap: target port
*
* LOCKING:
* None.
struct ata_port *ap = qc->ap;
unsigned int tag;
- WARN_ON(qc == NULL); /* ata_qc_from_tag _might_ return NULL */
+ WARN_ON_ONCE(qc == NULL); /* ata_qc_from_tag _might_ return NULL */
qc->flags = 0;
tag = qc->tag;
struct ata_port *ap = qc->ap;
struct ata_link *link = qc->dev->link;
- WARN_ON(qc == NULL); /* ata_qc_from_tag _might_ return NULL */
- WARN_ON(!(qc->flags & ATA_QCFLAG_ACTIVE));
+ WARN_ON_ONCE(qc == NULL); /* ata_qc_from_tag _might_ return NULL */
+ WARN_ON_ONCE(!(qc->flags & ATA_QCFLAG_ACTIVE));
if (likely(qc->flags & ATA_QCFLAG_DMAMAP))
ata_sg_clean(qc);
struct ata_port *ap = qc->ap;
qc->result_tf.flags = qc->tf.flags;
- ap->ops->tf_read(ap, &qc->result_tf);
+ ap->ops->qc_fill_rtf(qc);
}
static void ata_verify_xfer(struct ata_queued_cmd *qc)
/**
* ata_qc_complete - Complete an active ATA command
* @qc: Command to complete
- * @err_mask: ATA Status register contents
*
* Indicate to the mid and upper layers that an ATA
* command has completed, with either an ok or not-ok status.
struct ata_device *dev = qc->dev;
struct ata_eh_info *ehi = &dev->link->eh_info;
- WARN_ON(ap->pflags & ATA_PFLAG_FROZEN);
+ WARN_ON_ONCE(ap->pflags & ATA_PFLAG_FROZEN);
if (unlikely(qc->err_mask))
qc->flags |= ATA_QCFLAG_FAILED;
* ata_qc_complete_multiple - Complete multiple qcs successfully
* @ap: port in question
* @qc_active: new qc_active mask
- * @finish_qc: LLDD callback invoked before completing a qc
*
* Complete in-flight commands. This functions is meant to be
* called from low-level driver's interrupt routine to complete
* RETURNS:
* Number of completed commands on success, -errno otherwise.
*/
-int ata_qc_complete_multiple(struct ata_port *ap, u32 qc_active,
- void (*finish_qc)(struct ata_queued_cmd *))
+int ata_qc_complete_multiple(struct ata_port *ap, u32 qc_active)
{
int nr_done = 0;
u32 done_mask;
continue;
if ((qc = ata_qc_from_tag(ap, i))) {
- if (finish_qc)
- finish_qc(qc);
ata_qc_complete(qc);
nr_done++;
}
}
- return nr_done;
-}
-
-/**
- * ata_qc_issue - issue taskfile to device
- * @qc: command to issue to device
- *
- * Prepare an ATA command to submission to device.
- * This includes mapping the data into a DMA-able
- * area, filling in the S/G table, and finally
- * writing the taskfile to hardware, starting the command.
- *
- * LOCKING:
- * spin_lock_irqsave(host lock)
- */
-void ata_qc_issue(struct ata_queued_cmd *qc)
-{
- struct ata_port *ap = qc->ap;
- struct ata_link *link = qc->dev->link;
- u8 prot = qc->tf.protocol;
-
- /* Make sure only one non-NCQ command is outstanding. The
- * check is skipped for old EH because it reuses active qc to
- * request ATAPI sense.
- */
- WARN_ON(ap->ops->error_handler && ata_tag_valid(link->active_tag));
-
- if (ata_is_ncq(prot)) {
- WARN_ON(link->sactive & (1 << qc->tag));
-
- if (!link->sactive)
- ap->nr_active_links++;
- link->sactive |= 1 << qc->tag;
- } else {
- WARN_ON(link->sactive);
-
- ap->nr_active_links++;
- link->active_tag = qc->tag;
- }
-
- qc->flags |= ATA_QCFLAG_ACTIVE;
- ap->qc_active |= 1 << qc->tag;
-
- /* We guarantee to LLDs that they will have at least one
- * non-zero sg if the command is a data command.
- */
- BUG_ON(ata_is_data(prot) && (!qc->sg || !qc->n_elem || !qc->nbytes));
-
- if (ata_is_dma(prot) || (ata_is_pio(prot) &&
- (ap->flags & ATA_FLAG_PIO_DMA)))
- if (ata_sg_setup(qc))
- goto sg_err;
-
- /* if device is sleeping, schedule softreset and abort the link */
- if (unlikely(qc->dev->flags & ATA_DFLAG_SLEEPING)) {
- link->eh_info.action |= ATA_EH_SOFTRESET;
- ata_ehi_push_desc(&link->eh_info, "waking up from sleep");
- ata_link_abort(link);
- return;
- }
-
- ap->ops->qc_prep(qc);
-
- qc->err_mask |= ap->ops->qc_issue(qc);
- if (unlikely(qc->err_mask))
- goto err;
- return;
-
-sg_err:
- qc->err_mask |= AC_ERR_SYSTEM;
-err:
- ata_qc_complete(qc);
-}
-
-/**
- * ata_qc_issue_prot - issue taskfile to device in proto-dependent manner
- * @qc: command to issue to device
- *
- * Using various libata functions and hooks, this function
- * starts an ATA command. ATA commands are grouped into
- * classes called "protocols", and issuing each type of protocol
- * is slightly different.
- *
- * May be used as the qc_issue() entry in ata_port_operations.
- *
- * LOCKING:
- * spin_lock_irqsave(host lock)
- *
- * RETURNS:
- * Zero on success, AC_ERR_* mask on failure
- */
-
-unsigned int ata_qc_issue_prot(struct ata_queued_cmd *qc)
-{
- struct ata_port *ap = qc->ap;
-
- /* Use polling pio if the LLD doesn't handle
- * interrupt driven pio and atapi CDB interrupt.
- */
- if (ap->flags & ATA_FLAG_PIO_POLLING) {
- switch (qc->tf.protocol) {
- case ATA_PROT_PIO:
- case ATA_PROT_NODATA:
- case ATAPI_PROT_PIO:
- case ATAPI_PROT_NODATA:
- qc->tf.flags |= ATA_TFLAG_POLLING;
- break;
- case ATAPI_PROT_DMA:
- if (qc->dev->flags & ATA_DFLAG_CDB_INTR)
- /* see ata_dma_blacklisted() */
- BUG();
- break;
- default:
- break;
- }
- }
-
- /* select the device */
- ata_dev_select(ap, qc->dev->devno, 1, 0);
-
- /* start the command */
- switch (qc->tf.protocol) {
- case ATA_PROT_NODATA:
- if (qc->tf.flags & ATA_TFLAG_POLLING)
- ata_qc_set_polling(qc);
-
- ata_tf_to_host(ap, &qc->tf);
- ap->hsm_task_state = HSM_ST_LAST;
-
- if (qc->tf.flags & ATA_TFLAG_POLLING)
- ata_pio_queue_task(ap, qc, 0);
-
- break;
-
- case ATA_PROT_DMA:
- WARN_ON(qc->tf.flags & ATA_TFLAG_POLLING);
-
- ap->ops->tf_load(ap, &qc->tf); /* load tf registers */
- ap->ops->bmdma_setup(qc); /* set up bmdma */
- ap->ops->bmdma_start(qc); /* initiate bmdma */
- ap->hsm_task_state = HSM_ST_LAST;
- break;
-
- case ATA_PROT_PIO:
- if (qc->tf.flags & ATA_TFLAG_POLLING)
- ata_qc_set_polling(qc);
-
- ata_tf_to_host(ap, &qc->tf);
-
- if (qc->tf.flags & ATA_TFLAG_WRITE) {
- /* PIO data out protocol */
- ap->hsm_task_state = HSM_ST_FIRST;
- ata_pio_queue_task(ap, qc, 0);
-
- /* always send first data block using
- * the ata_pio_task() codepath.
- */
- } else {
- /* PIO data in protocol */
- ap->hsm_task_state = HSM_ST;
-
- if (qc->tf.flags & ATA_TFLAG_POLLING)
- ata_pio_queue_task(ap, qc, 0);
-
- /* if polling, ata_pio_task() handles the rest.
- * otherwise, interrupt handler takes over from here.
- */
- }
-
- break;
-
- case ATAPI_PROT_PIO:
- case ATAPI_PROT_NODATA:
- if (qc->tf.flags & ATA_TFLAG_POLLING)
- ata_qc_set_polling(qc);
-
- ata_tf_to_host(ap, &qc->tf);
-
- ap->hsm_task_state = HSM_ST_FIRST;
-
- /* send cdb by polling if no cdb interrupt */
- if ((!(qc->dev->flags & ATA_DFLAG_CDB_INTR)) ||
- (qc->tf.flags & ATA_TFLAG_POLLING))
- ata_pio_queue_task(ap, qc, 0);
- break;
-
- case ATAPI_PROT_DMA:
- WARN_ON(qc->tf.flags & ATA_TFLAG_POLLING);
-
- ap->ops->tf_load(ap, &qc->tf); /* load tf registers */
- ap->ops->bmdma_setup(qc); /* set up bmdma */
- ap->hsm_task_state = HSM_ST_FIRST;
-
- /* send cdb by polling if no cdb interrupt */
- if (!(qc->dev->flags & ATA_DFLAG_CDB_INTR))
- ata_pio_queue_task(ap, qc, 0);
- break;
-
- default:
- WARN_ON(1);
- return AC_ERR_SYSTEM;
- }
-
- return 0;
+ return nr_done;
}
/**
- * ata_host_intr - Handle host interrupt for given (port, task)
- * @ap: Port on which interrupt arrived (possibly...)
- * @qc: Taskfile currently active in engine
+ * ata_qc_issue - issue taskfile to device
+ * @qc: command to issue to device
*
- * Handle host interrupt for given queued command. Currently,
- * only DMA interrupts are handled. All other commands are
- * handled via polling with interrupts disabled (nIEN bit).
+ * Prepare an ATA command to submission to device.
+ * This includes mapping the data into a DMA-able
+ * area, filling in the S/G table, and finally
+ * writing the taskfile to hardware, starting the command.
*
* LOCKING:
* spin_lock_irqsave(host lock)
- *
- * RETURNS:
- * One if interrupt was handled, zero if not (shared irq).
*/
-
-inline unsigned int ata_host_intr(struct ata_port *ap,
- struct ata_queued_cmd *qc)
+void ata_qc_issue(struct ata_queued_cmd *qc)
{
- struct ata_eh_info *ehi = &ap->link.eh_info;
- u8 status, host_stat = 0;
-
- VPRINTK("ata%u: protocol %d task_state %d\n",
- ap->print_id, qc->tf.protocol, ap->hsm_task_state);
-
- /* Check whether we are expecting interrupt in this state */
- switch (ap->hsm_task_state) {
- case HSM_ST_FIRST:
- /* Some pre-ATAPI-4 devices assert INTRQ
- * at this state when ready to receive CDB.
- */
-
- /* Check the ATA_DFLAG_CDB_INTR flag is enough here.
- * The flag was turned on only for atapi devices. No
- * need to check ata_is_atapi(qc->tf.protocol) again.
- */
- if (!(qc->dev->flags & ATA_DFLAG_CDB_INTR))
- goto idle_irq;
- break;
- case HSM_ST_LAST:
- if (qc->tf.protocol == ATA_PROT_DMA ||
- qc->tf.protocol == ATAPI_PROT_DMA) {
- /* check status of DMA engine */
- host_stat = ap->ops->bmdma_status(ap);
- VPRINTK("ata%u: host_stat 0x%X\n",
- ap->print_id, host_stat);
-
- /* if it's not our irq... */
- if (!(host_stat & ATA_DMA_INTR))
- goto idle_irq;
-
- /* before we do anything else, clear DMA-Start bit */
- ap->ops->bmdma_stop(qc);
-
- if (unlikely(host_stat & ATA_DMA_ERR)) {
- /* error when transfering data to/from memory */
- qc->err_mask |= AC_ERR_HOST_BUS;
- ap->hsm_task_state = HSM_ST_ERR;
- }
- }
- break;
- case HSM_ST:
- break;
- default:
- goto idle_irq;
- }
-
- /* check altstatus */
- status = ata_altstatus(ap);
- if (status & ATA_BUSY)
- goto idle_irq;
-
- /* check main status, clearing INTRQ */
- status = ata_chk_status(ap);
- if (unlikely(status & ATA_BUSY))
- goto idle_irq;
-
- /* ack bmdma irq events */
- ap->ops->irq_clear(ap);
-
- ata_hsm_move(ap, qc, status, 0);
+ struct ata_port *ap = qc->ap;
+ struct ata_link *link = qc->dev->link;
+ u8 prot = qc->tf.protocol;
- if (unlikely(qc->err_mask) && (qc->tf.protocol == ATA_PROT_DMA ||
- qc->tf.protocol == ATAPI_PROT_DMA))
- ata_ehi_push_desc(ehi, "BMDMA stat 0x%x", host_stat);
+ /* Make sure only one non-NCQ command is outstanding. The
+ * check is skipped for old EH because it reuses active qc to
+ * request ATAPI sense.
+ */
+ WARN_ON_ONCE(ap->ops->error_handler && ata_tag_valid(link->active_tag));
- return 1; /* irq handled */
+ if (ata_is_ncq(prot)) {
+ WARN_ON_ONCE(link->sactive & (1 << qc->tag));
-idle_irq:
- ap->stats.idle_irq++;
+ if (!link->sactive)
+ ap->nr_active_links++;
+ link->sactive |= 1 << qc->tag;
+ } else {
+ WARN_ON_ONCE(link->sactive);
-#ifdef ATA_IRQ_TRAP
- if ((ap->stats.idle_irq % 1000) == 0) {
- ata_chk_status(ap);
- ap->ops->irq_clear(ap);
- ata_port_printk(ap, KERN_WARNING, "irq trap\n");
- return 1;
+ ap->nr_active_links++;
+ link->active_tag = qc->tag;
}
-#endif
- return 0; /* irq not handled */
-}
-
-/**
- * ata_interrupt - Default ATA host interrupt handler
- * @irq: irq line (unused)
- * @dev_instance: pointer to our ata_host information structure
- *
- * Default interrupt handler for PCI IDE devices. Calls
- * ata_host_intr() for each port that is not disabled.
- *
- * LOCKING:
- * Obtains host lock during operation.
- *
- * RETURNS:
- * IRQ_NONE or IRQ_HANDLED.
- */
-irqreturn_t ata_interrupt(int irq, void *dev_instance)
-{
- struct ata_host *host = dev_instance;
- unsigned int i;
- unsigned int handled = 0;
- unsigned long flags;
+ qc->flags |= ATA_QCFLAG_ACTIVE;
+ ap->qc_active |= 1 << qc->tag;
- /* TODO: make _irqsave conditional on x86 PCI IDE legacy mode */
- spin_lock_irqsave(&host->lock, flags);
+ /* We guarantee to LLDs that they will have at least one
+ * non-zero sg if the command is a data command.
+ */
+ BUG_ON(ata_is_data(prot) && (!qc->sg || !qc->n_elem || !qc->nbytes));
- for (i = 0; i < host->n_ports; i++) {
- struct ata_port *ap;
+ if (ata_is_dma(prot) || (ata_is_pio(prot) &&
+ (ap->flags & ATA_FLAG_PIO_DMA)))
+ if (ata_sg_setup(qc))
+ goto sg_err;
- ap = host->ports[i];
- if (ap &&
- !(ap->flags & ATA_FLAG_DISABLED)) {
- struct ata_queued_cmd *qc;
-
- qc = ata_qc_from_tag(ap, ap->link.active_tag);
- if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING)) &&
- (qc->flags & ATA_QCFLAG_ACTIVE))
- handled |= ata_host_intr(ap, qc);
- }
+ /* if device is sleeping, schedule reset and abort the link */
+ if (unlikely(qc->dev->flags & ATA_DFLAG_SLEEPING)) {
+ link->eh_info.action |= ATA_EH_RESET;
+ ata_ehi_push_desc(&link->eh_info, "waking up from sleep");
+ ata_link_abort(link);
+ return;
}
- spin_unlock_irqrestore(&host->lock, flags);
+ ap->ops->qc_prep(qc);
+
+ qc->err_mask |= ap->ops->qc_issue(qc);
+ if (unlikely(qc->err_mask))
+ goto err;
+ return;
- return IRQ_RETVAL(handled);
+sg_err:
+ qc->err_mask |= AC_ERR_SYSTEM;
+err:
+ ata_qc_complete(qc);
}
/**
int sata_scr_read(struct ata_link *link, int reg, u32 *val)
{
if (ata_is_host_link(link)) {
- struct ata_port *ap = link->ap;
-
if (sata_scr_valid(link))
- return ap->ops->scr_read(ap, reg, val);
+ return link->ap->ops->scr_read(link, reg, val);
return -EOPNOTSUPP;
}
int sata_scr_write(struct ata_link *link, int reg, u32 val)
{
if (ata_is_host_link(link)) {
- struct ata_port *ap = link->ap;
-
if (sata_scr_valid(link))
- return ap->ops->scr_write(ap, reg, val);
+ return link->ap->ops->scr_write(link, reg, val);
return -EOPNOTSUPP;
}
int sata_scr_write_flush(struct ata_link *link, int reg, u32 val)
{
if (ata_is_host_link(link)) {
- struct ata_port *ap = link->ap;
int rc;
if (sata_scr_valid(link)) {
- rc = ap->ops->scr_write(ap, reg, val);
+ rc = link->ap->ops->scr_write(link, reg, val);
if (rc == 0)
- rc = ap->ops->scr_read(ap, reg, &val);
+ rc = link->ap->ops->scr_read(link, reg, &val);
return rc;
}
return -EOPNOTSUPP;
}
/**
- * ata_link_online - test whether the given link is online
+ * ata_phys_link_online - test whether the given link is online
* @link: ATA link to test
*
* Test whether @link is online. Note that this function returns
* None.
*
* RETURNS:
- * 1 if the port online status is available and online.
+ * True if the port online status is available and online.
*/
-int ata_link_online(struct ata_link *link)
+bool ata_phys_link_online(struct ata_link *link)
{
u32 sstatus;
if (sata_scr_read(link, SCR_STATUS, &sstatus) == 0 &&
- (sstatus & 0xf) == 0x3)
- return 1;
- return 0;
+ ata_sstatus_online(sstatus))
+ return true;
+ return false;
}
/**
- * ata_link_offline - test whether the given link is offline
+ * ata_phys_link_offline - test whether the given link is offline
* @link: ATA link to test
*
* Test whether @link is offline. Note that this function
* None.
*
* RETURNS:
- * 1 if the port offline status is available and offline.
+ * True if the port offline status is available and offline.
*/
-int ata_link_offline(struct ata_link *link)
+bool ata_phys_link_offline(struct ata_link *link)
{
u32 sstatus;
if (sata_scr_read(link, SCR_STATUS, &sstatus) == 0 &&
- (sstatus & 0xf) != 0x3)
- return 1;
- return 0;
+ !ata_sstatus_online(sstatus))
+ return true;
+ return false;
}
-int ata_flush_cache(struct ata_device *dev)
+/**
+ * ata_link_online - test whether the given link is online
+ * @link: ATA link to test
+ *
+ * Test whether @link is online. This is identical to
+ * ata_phys_link_online() when there's no slave link. When
+ * there's a slave link, this function should only be called on
+ * the master link and will return true if any of M/S links is
+ * online.
+ *
+ * LOCKING:
+ * None.
+ *
+ * RETURNS:
+ * True if the port online status is available and online.
+ */
+bool ata_link_online(struct ata_link *link)
{
- unsigned int err_mask;
- u8 cmd;
+ struct ata_link *slave = link->ap->slave_link;
- if (!ata_try_flush_cache(dev))
- return 0;
+ WARN_ON(link == slave); /* shouldn't be called on slave link */
- if (dev->flags & ATA_DFLAG_FLUSH_EXT)
- cmd = ATA_CMD_FLUSH_EXT;
- else
- cmd = ATA_CMD_FLUSH;
+ return ata_phys_link_online(link) ||
+ (slave && ata_phys_link_online(slave));
+}
- /* This is wrong. On a failed flush we get back the LBA of the lost
- sector and we should (assuming it wasn't aborted as unknown) issue
- a further flush command to continue the writeback until it
- does not error */
- err_mask = ata_do_simple_cmd(dev, cmd);
- if (err_mask) {
- ata_dev_printk(dev, KERN_ERR, "failed to flush cache\n");
- return -EIO;
- }
+/**
+ * ata_link_offline - test whether the given link is offline
+ * @link: ATA link to test
+ *
+ * Test whether @link is offline. This is identical to
+ * ata_phys_link_offline() when there's no slave link. When
+ * there's a slave link, this function should only be called on
+ * the master link and will return true if both M/S links are
+ * offline.
+ *
+ * LOCKING:
+ * None.
+ *
+ * RETURNS:
+ * True if the port offline status is available and offline.
+ */
+bool ata_link_offline(struct ata_link *link)
+{
+ struct ata_link *slave = link->ap->slave_link;
- return 0;
+ WARN_ON(link == slave); /* shouldn't be called on slave link */
+
+ return ata_phys_link_offline(link) &&
+ (!slave || ata_phys_link_offline(slave));
}
#ifdef CONFIG_PM
}
ap->pflags |= ATA_PFLAG_PM_PENDING;
- __ata_port_for_each_link(link, ap) {
+ ata_for_each_link(link, ap, HOST_FIRST) {
link->eh_info.action |= action;
link->eh_info.flags |= ehi_flags;
}
*/
void ata_host_resume(struct ata_host *host)
{
- ata_host_request_pm(host, PMSG_ON, ATA_EH_SOFTRESET,
+ ata_host_request_pm(host, PMSG_ON, ATA_EH_RESET,
ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET, 0);
host->dev->power.power_state = PMSG_ON;
*/
void ata_dev_init(struct ata_device *dev)
{
- struct ata_link *link = dev->link;
+ struct ata_link *link = ata_dev_phys_link(dev);
struct ata_port *ap = link->ap;
unsigned long flags;
- /* SATA spd limit is bound to the first device */
+ /* SATA spd limit is bound to the attached device, reset together */
link->sata_spd_limit = link->hw_sata_spd_limit;
link->sata_spd = 0;
dev->horkage = 0;
spin_unlock_irqrestore(ap->lock, flags);
- memset((void *)dev + ATA_DEVICE_CLEAR_OFFSET, 0,
- sizeof(*dev) - ATA_DEVICE_CLEAR_OFFSET);
+ memset((void *)dev + ATA_DEVICE_CLEAR_BEGIN, 0,
+ ATA_DEVICE_CLEAR_END - ATA_DEVICE_CLEAR_BEGIN);
dev->pio_mask = UINT_MAX;
dev->mwdma_mask = UINT_MAX;
dev->udma_mask = UINT_MAX;
*/
int sata_link_init_spd(struct ata_link *link)
{
- u32 scontrol;
u8 spd;
int rc;
- rc = sata_scr_read(link, SCR_CONTROL, &scontrol);
+ rc = sata_scr_read(link, SCR_CONTROL, &link->saved_scontrol);
if (rc)
return rc;
- spd = (scontrol >> 4) & 0xf;
+ spd = (link->saved_scontrol >> 4) & 0xf;
if (spd)
link->hw_sata_spd_limit &= (1 << spd) - 1;
- ata_force_spd_limit(link);
+ ata_force_link_limits(link);
link->sata_spd_limit = link->hw_sata_spd_limit;
ap->msg_enable = ATA_MSG_DRV | ATA_MSG_ERR | ATA_MSG_WARN;
#endif
+#ifdef CONFIG_ATA_SFF
INIT_DELAYED_WORK(&ap->port_task, ata_pio_task);
+#else
+ INIT_DELAYED_WORK(&ap->port_task, NULL);
+#endif
INIT_DELAYED_WORK(&ap->hotplug_task, ata_scsi_hotplug);
INIT_WORK(&ap->scsi_rescan_task, ata_scsi_dev_rescan);
INIT_LIST_HEAD(&ap->eh_done_q);
init_waitqueue_head(&ap->eh_wait_q);
+ init_completion(&ap->park_req_pending);
init_timer_deferrable(&ap->fastdrain_timer);
ap->fastdrain_timer.function = ata_eh_fastdrain_timerfn;
ap->fastdrain_timer.data = (unsigned long)ap;
scsi_host_put(ap->scsi_host);
kfree(ap->pmp_link);
+ kfree(ap->slave_link);
kfree(ap);
host->ports[i] = NULL;
}
if (!host->ops && (pi->port_ops != &ata_dummy_port_ops))
host->ops = pi->port_ops;
- if (!host->private_data && pi->private_data)
- host->private_data = pi->private_data;
}
return host;
}
+/**
+ * ata_slave_link_init - initialize slave link
+ * @ap: port to initialize slave link for
+ *
+ * Create and initialize slave link for @ap. This enables slave
+ * link handling on the port.
+ *
+ * In libata, a port contains links and a link contains devices.
+ * There is single host link but if a PMP is attached to it,
+ * there can be multiple fan-out links. On SATA, there's usually
+ * a single device connected to a link but PATA and SATA
+ * controllers emulating TF based interface can have two - master
+ * and slave.
+ *
+ * However, there are a few controllers which don't fit into this
+ * abstraction too well - SATA controllers which emulate TF
+ * interface with both master and slave devices but also have
+ * separate SCR register sets for each device. These controllers
+ * need separate links for physical link handling
+ * (e.g. onlineness, link speed) but should be treated like a
+ * traditional M/S controller for everything else (e.g. command
+ * issue, softreset).
+ *
+ * slave_link is libata's way of handling this class of
+ * controllers without impacting core layer too much. For
+ * anything other than physical link handling, the default host
+ * link is used for both master and slave. For physical link
+ * handling, separate @ap->slave_link is used. All dirty details
+ * are implemented inside libata core layer. From LLD's POV, the
+ * only difference is that prereset, hardreset and postreset are
+ * called once more for the slave link, so the reset sequence
+ * looks like the following.
+ *
+ * prereset(M) -> prereset(S) -> hardreset(M) -> hardreset(S) ->
+ * softreset(M) -> postreset(M) -> postreset(S)
+ *
+ * Note that softreset is called only for the master. Softreset
+ * resets both M/S by definition, so SRST on master should handle
+ * both (the standard method will work just fine).
+ *
+ * LOCKING:
+ * Should be called before host is registered.
+ *
+ * RETURNS:
+ * 0 on success, -errno on failure.
+ */
+int ata_slave_link_init(struct ata_port *ap)
+{
+ struct ata_link *link;
+
+ WARN_ON(ap->slave_link);
+ WARN_ON(ap->flags & ATA_FLAG_PMP);
+
+ link = kzalloc(sizeof(*link), GFP_KERNEL);
+ if (!link)
+ return -ENOMEM;
+
+ ata_link_init(ap, link, 1);
+ ap->slave_link = link;
+ return 0;
+}
+
static void ata_host_stop(struct device *gendev, void *res)
{
struct ata_host *host = dev_get_drvdata(gendev);
}
/**
+ * ata_finalize_port_ops - finalize ata_port_operations
+ * @ops: ata_port_operations to finalize
+ *
+ * An ata_port_operations can inherit from another ops and that
+ * ops can again inherit from another. This can go on as many
+ * times as necessary as long as there is no loop in the
+ * inheritance chain.
+ *
+ * Ops tables are finalized when the host is started. NULL or
+ * unspecified entries are inherited from the closet ancestor
+ * which has the method and the entry is populated with it.
+ * After finalization, the ops table directly points to all the
+ * methods and ->inherits is no longer necessary and cleared.
+ *
+ * Using ATA_OP_NULL, inheriting ops can force a method to NULL.
+ *
+ * LOCKING:
+ * None.
+ */
+static void ata_finalize_port_ops(struct ata_port_operations *ops)
+{
+ static DEFINE_SPINLOCK(lock);
+ const struct ata_port_operations *cur;
+ void **begin = (void **)ops;
+ void **end = (void **)&ops->inherits;
+ void **pp;
+
+ if (!ops || !ops->inherits)
+ return;
+
+ spin_lock(&lock);
+
+ for (cur = ops->inherits; cur; cur = cur->inherits) {
+ void **inherit = (void **)cur;
+
+ for (pp = begin; pp < end; pp++, inherit++)
+ if (!*pp)
+ *pp = *inherit;
+ }
+
+ for (pp = begin; pp < end; pp++)
+ if (IS_ERR(*pp))
+ *pp = NULL;
+
+ ops->inherits = NULL;
+
+ spin_unlock(&lock);
+}
+
+/**
* ata_host_start - start and freeze ports of an ATA host
* @host: ATA host to start ports for
*
if (host->flags & ATA_HOST_STARTED)
return 0;
+ ata_finalize_port_ops(host->ops);
+
for (i = 0; i < host->n_ports; i++) {
struct ata_port *ap = host->ports[i];
+ ata_finalize_port_ops(ap->ops);
+
if (!host->ops && !ata_port_is_dummy(ap))
host->ops = ap->ops;
*/
/* KILLME - the only user left is ipr */
void ata_host_init(struct ata_host *host, struct device *dev,
- unsigned long flags, const struct ata_port_operations *ops)
+ unsigned long flags, struct ata_port_operations *ops)
{
spin_lock_init(&host->lock);
host->dev = dev;
host->ops = ops;
}
+
+static void async_port_probe(void *data, async_cookie_t cookie)
+{
+ int rc;
+ struct ata_port *ap = data;
+
+ /*
+ * If we're not allowed to scan this host in parallel,
+ * we need to wait until all previous scans have completed
+ * before going further.
+ * Jeff Garzik says this is only within a controller, so we
+ * don't need to wait for port 0, only for later ports.
+ */
+ if (!(ap->host->flags & ATA_HOST_PARALLEL_SCAN) && ap->port_no != 0)
+ async_synchronize_cookie(cookie);
+
+ /* probe */
+ if (ap->ops->error_handler) {
+ struct ata_eh_info *ehi = &ap->link.eh_info;
+ unsigned long flags;
+
+ ata_port_probe(ap);
+
+ /* kick EH for boot probing */
+ spin_lock_irqsave(ap->lock, flags);
+
+ ehi->probe_mask |= ATA_ALL_DEVICES;
+ ehi->action |= ATA_EH_RESET | ATA_EH_LPM;
+ ehi->flags |= ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET;
+
+ ap->pflags &= ~ATA_PFLAG_INITIALIZING;
+ ap->pflags |= ATA_PFLAG_LOADING;
+ ata_port_schedule_eh(ap);
+
+ spin_unlock_irqrestore(ap->lock, flags);
+
+ /* wait for EH to finish */
+ ata_port_wait_eh(ap);
+ } else {
+ DPRINTK("ata%u: bus probe begin\n", ap->print_id);
+ rc = ata_bus_probe(ap);
+ DPRINTK("ata%u: bus probe end\n", ap->print_id);
+
+ if (rc) {
+ /* FIXME: do something useful here?
+ * Current libata behavior will
+ * tear down everything when
+ * the module is removed
+ * or the h/w is unplugged.
+ */
+ }
+ }
+
+ /* in order to keep device order, we need to synchronize at this point */
+ async_synchronize_cookie(cookie);
+
+ ata_scsi_scan_host(ap, 1);
+
+}
/**
* ata_host_register - register initialized ATA host
* @host: ATA host to register
/* init sata_spd_limit to the current value */
sata_link_init_spd(&ap->link);
+ if (ap->slave_link)
+ sata_link_init_spd(ap->slave_link);
/* print per-port info to dmesg */
xfer_mask = ata_pack_xfermask(ap->pio_mask, ap->mwdma_mask,
DPRINTK("probe begin\n");
for (i = 0; i < host->n_ports; i++) {
struct ata_port *ap = host->ports[i];
-
- /* probe */
- if (ap->ops->error_handler) {
- struct ata_eh_info *ehi = &ap->link.eh_info;
- unsigned long flags;
-
- ata_port_probe(ap);
-
- /* kick EH for boot probing */
- spin_lock_irqsave(ap->lock, flags);
-
- ehi->probe_mask =
- (1 << ata_link_max_devices(&ap->link)) - 1;
- ehi->action |= ATA_EH_SOFTRESET;
- ehi->flags |= ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET;
-
- ap->pflags &= ~ATA_PFLAG_INITIALIZING;
- ap->pflags |= ATA_PFLAG_LOADING;
- ata_port_schedule_eh(ap);
-
- spin_unlock_irqrestore(ap->lock, flags);
-
- /* wait for EH to finish */
- ata_port_wait_eh(ap);
- } else {
- DPRINTK("ata%u: bus probe begin\n", ap->print_id);
- rc = ata_bus_probe(ap);
- DPRINTK("ata%u: bus probe end\n", ap->print_id);
-
- if (rc) {
- /* FIXME: do something useful here?
- * Current libata behavior will
- * tear down everything when
- * the module is removed
- * or the h/w is unplugged.
- */
- }
- }
- }
-
- /* probes are done, now scan each port's disk(s) */
- DPRINTK("host probe begin\n");
- for (i = 0; i < host->n_ports; i++) {
- struct ata_port *ap = host->ports[i];
-
- ata_scsi_scan_host(ap, 1);
- ata_lpm_schedule(ap, ap->pm_policy);
+ async_schedule(async_port_probe, ap);
}
+ DPRINTK("probe end\n");
return 0;
}
static void ata_port_detach(struct ata_port *ap)
{
unsigned long flags;
- struct ata_link *link;
- struct ata_device *dev;
if (!ap->ops->error_handler)
goto skip_eh;
/* tell EH we're leaving & flush EH */
spin_lock_irqsave(ap->lock, flags);
ap->pflags |= ATA_PFLAG_UNLOADING;
+ ata_port_schedule_eh(ap);
spin_unlock_irqrestore(ap->lock, flags);
+ /* wait till EH commits suicide */
ata_port_wait_eh(ap);
- /* EH is now guaranteed to see UNLOADING - EH context belongs
- * to us. Disable all existing devices.
- */
- ata_port_for_each_link(link, ap) {
- ata_link_for_each_dev(dev, link)
- ata_dev_disable(dev);
- }
-
- /* Final freeze & EH. All in-flight commands are aborted. EH
- * will be skipped and retrials will be terminated with bad
- * target.
- */
- spin_lock_irqsave(ap->lock, flags);
- ata_port_freeze(ap); /* won't be thawed */
- spin_unlock_irqrestore(ap->lock, flags);
+ /* it better be dead now */
+ WARN_ON(!(ap->pflags & ATA_PFLAG_UNLOADED));
- ata_port_wait_eh(ap);
cancel_rearming_delayed_work(&ap->hotplug_task);
skip_eh:
ata_acpi_dissociate(host);
}
-/**
- * ata_std_ports - initialize ioaddr with standard port offsets.
- * @ioaddr: IO address structure to be initialized
- *
- * Utility function which initializes data_addr, error_addr,
- * feature_addr, nsect_addr, lbal_addr, lbam_addr, lbah_addr,
- * device_addr, status_addr, and command_addr to standard offsets
- * relative to cmd_addr.
- *
- * Does not set ctl_addr, altstatus_addr, bmdma_addr, or scr_addr.
- */
-
-void ata_std_ports(struct ata_ioports *ioaddr)
-{
- ioaddr->data_addr = ioaddr->cmd_addr + ATA_REG_DATA;
- ioaddr->error_addr = ioaddr->cmd_addr + ATA_REG_ERR;
- ioaddr->feature_addr = ioaddr->cmd_addr + ATA_REG_FEATURE;
- ioaddr->nsect_addr = ioaddr->cmd_addr + ATA_REG_NSECT;
- ioaddr->lbal_addr = ioaddr->cmd_addr + ATA_REG_LBAL;
- ioaddr->lbam_addr = ioaddr->cmd_addr + ATA_REG_LBAM;
- ioaddr->lbah_addr = ioaddr->cmd_addr + ATA_REG_LBAH;
- ioaddr->device_addr = ioaddr->cmd_addr + ATA_REG_DEVICE;
- ioaddr->status_addr = ioaddr->cmd_addr + ATA_REG_STATUS;
- ioaddr->command_addr = ioaddr->cmd_addr + ATA_REG_CMD;
-}
-
-
#ifdef CONFIG_PCI
/**
{ "udma133", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 6) },
{ "udma/133", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 6) },
{ "udma7", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 7) },
+ { "nohrst", .lflags = ATA_LFLAG_NO_HRST },
+ { "nosrst", .lflags = ATA_LFLAG_NO_SRST },
+ { "norst", .lflags = ATA_LFLAG_NO_HRST | ATA_LFLAG_NO_SRST },
};
char *start = *cur, *p = *cur;
char *id, *val, *endp;
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)
* @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
* 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);
* 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);
}
/*
* Dummy port_ops
*/
-static void ata_dummy_noret(struct ata_port *ap) { }
-static int ata_dummy_ret0(struct ata_port *ap) { return 0; }
-static void ata_dummy_qc_noret(struct ata_queued_cmd *qc) { }
-
-static u8 ata_dummy_check_status(struct ata_port *ap)
+static unsigned int ata_dummy_qc_issue(struct ata_queued_cmd *qc)
{
- return ATA_DRDY;
+ return AC_ERR_SYSTEM;
}
-static unsigned int ata_dummy_qc_issue(struct ata_queued_cmd *qc)
+static void ata_dummy_error_handler(struct ata_port *ap)
{
- return AC_ERR_SYSTEM;
+ /* truly dummy */
}
-const struct ata_port_operations ata_dummy_port_ops = {
- .check_status = ata_dummy_check_status,
- .check_altstatus = ata_dummy_check_status,
- .dev_select = ata_noop_dev_select,
+struct ata_port_operations ata_dummy_port_ops = {
.qc_prep = ata_noop_qc_prep,
.qc_issue = ata_dummy_qc_issue,
- .freeze = ata_dummy_noret,
- .thaw = ata_dummy_noret,
- .error_handler = ata_dummy_noret,
- .post_internal_cmd = ata_dummy_qc_noret,
- .irq_clear = ata_dummy_noret,
- .port_start = ata_dummy_ret0,
- .port_stop = ata_dummy_noret,
+ .error_handler = ata_dummy_error_handler,
};
const struct ata_port_info ata_dummy_port_info = {
EXPORT_SYMBOL_GPL(sata_deb_timing_normal);
EXPORT_SYMBOL_GPL(sata_deb_timing_hotplug);
EXPORT_SYMBOL_GPL(sata_deb_timing_long);
+EXPORT_SYMBOL_GPL(ata_base_port_ops);
+EXPORT_SYMBOL_GPL(sata_port_ops);
EXPORT_SYMBOL_GPL(ata_dummy_port_ops);
EXPORT_SYMBOL_GPL(ata_dummy_port_info);
+EXPORT_SYMBOL_GPL(ata_link_next);
+EXPORT_SYMBOL_GPL(ata_dev_next);
EXPORT_SYMBOL_GPL(ata_std_bios_param);
-EXPORT_SYMBOL_GPL(ata_std_ports);
EXPORT_SYMBOL_GPL(ata_host_init);
EXPORT_SYMBOL_GPL(ata_host_alloc);
EXPORT_SYMBOL_GPL(ata_host_alloc_pinfo);
+EXPORT_SYMBOL_GPL(ata_slave_link_init);
EXPORT_SYMBOL_GPL(ata_host_start);
EXPORT_SYMBOL_GPL(ata_host_register);
EXPORT_SYMBOL_GPL(ata_host_activate);
EXPORT_SYMBOL_GPL(ata_host_detach);
EXPORT_SYMBOL_GPL(ata_sg_init);
-EXPORT_SYMBOL_GPL(ata_hsm_move);
EXPORT_SYMBOL_GPL(ata_qc_complete);
EXPORT_SYMBOL_GPL(ata_qc_complete_multiple);
-EXPORT_SYMBOL_GPL(ata_qc_issue_prot);
-EXPORT_SYMBOL_GPL(ata_tf_load);
-EXPORT_SYMBOL_GPL(ata_tf_read);
-EXPORT_SYMBOL_GPL(ata_noop_dev_select);
-EXPORT_SYMBOL_GPL(ata_std_dev_select);
-EXPORT_SYMBOL_GPL(sata_print_link_status);
EXPORT_SYMBOL_GPL(atapi_cmd_type);
EXPORT_SYMBOL_GPL(ata_tf_to_fis);
EXPORT_SYMBOL_GPL(ata_tf_from_fis);
EXPORT_SYMBOL_GPL(ata_xfer_mode2shift);
EXPORT_SYMBOL_GPL(ata_mode_string);
EXPORT_SYMBOL_GPL(ata_id_xfermask);
-EXPORT_SYMBOL_GPL(ata_check_status);
-EXPORT_SYMBOL_GPL(ata_altstatus);
-EXPORT_SYMBOL_GPL(ata_exec_command);
EXPORT_SYMBOL_GPL(ata_port_start);
-EXPORT_SYMBOL_GPL(ata_sff_port_start);
-EXPORT_SYMBOL_GPL(ata_interrupt);
EXPORT_SYMBOL_GPL(ata_do_set_mode);
-EXPORT_SYMBOL_GPL(ata_data_xfer);
-EXPORT_SYMBOL_GPL(ata_data_xfer_noirq);
EXPORT_SYMBOL_GPL(ata_std_qc_defer);
-EXPORT_SYMBOL_GPL(ata_qc_prep);
-EXPORT_SYMBOL_GPL(ata_dumb_qc_prep);
EXPORT_SYMBOL_GPL(ata_noop_qc_prep);
-EXPORT_SYMBOL_GPL(ata_bmdma_setup);
-EXPORT_SYMBOL_GPL(ata_bmdma_start);
-EXPORT_SYMBOL_GPL(ata_bmdma_irq_clear);
-EXPORT_SYMBOL_GPL(ata_bmdma_status);
-EXPORT_SYMBOL_GPL(ata_bmdma_stop);
-EXPORT_SYMBOL_GPL(ata_bmdma_freeze);
-EXPORT_SYMBOL_GPL(ata_bmdma_thaw);
-EXPORT_SYMBOL_GPL(ata_bmdma_drive_eh);
-EXPORT_SYMBOL_GPL(ata_bmdma_error_handler);
-EXPORT_SYMBOL_GPL(ata_bmdma_post_internal_cmd);
EXPORT_SYMBOL_GPL(ata_port_probe);
EXPORT_SYMBOL_GPL(ata_dev_disable);
EXPORT_SYMBOL_GPL(sata_set_spd);
+EXPORT_SYMBOL_GPL(ata_wait_after_reset);
EXPORT_SYMBOL_GPL(sata_link_debounce);
EXPORT_SYMBOL_GPL(sata_link_resume);
-EXPORT_SYMBOL_GPL(ata_bus_reset);
EXPORT_SYMBOL_GPL(ata_std_prereset);
-EXPORT_SYMBOL_GPL(ata_std_softreset);
EXPORT_SYMBOL_GPL(sata_link_hardreset);
EXPORT_SYMBOL_GPL(sata_std_hardreset);
EXPORT_SYMBOL_GPL(ata_std_postreset);
EXPORT_SYMBOL_GPL(ata_port_disable);
EXPORT_SYMBOL_GPL(ata_ratelimit);
EXPORT_SYMBOL_GPL(ata_wait_register);
-EXPORT_SYMBOL_GPL(ata_busy_sleep);
-EXPORT_SYMBOL_GPL(ata_wait_after_reset);
-EXPORT_SYMBOL_GPL(ata_wait_ready);
-EXPORT_SYMBOL_GPL(ata_scsi_ioctl);
EXPORT_SYMBOL_GPL(ata_scsi_queuecmd);
EXPORT_SYMBOL_GPL(ata_scsi_slave_config);
EXPORT_SYMBOL_GPL(ata_scsi_slave_destroy);
EXPORT_SYMBOL_GPL(ata_scsi_change_queue_depth);
-EXPORT_SYMBOL_GPL(ata_host_intr);
EXPORT_SYMBOL_GPL(sata_scr_valid);
EXPORT_SYMBOL_GPL(sata_scr_read);
EXPORT_SYMBOL_GPL(sata_scr_write);
#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);
#ifdef CONFIG_PCI
EXPORT_SYMBOL_GPL(pci_test_config_bits);
-EXPORT_SYMBOL_GPL(ata_pci_init_sff_host);
-EXPORT_SYMBOL_GPL(ata_pci_init_bmdma);
-EXPORT_SYMBOL_GPL(ata_pci_prepare_sff_host);
-EXPORT_SYMBOL_GPL(ata_pci_activate_sff_host);
-EXPORT_SYMBOL_GPL(ata_pci_init_one);
EXPORT_SYMBOL_GPL(ata_pci_remove_one);
#ifdef CONFIG_PM
EXPORT_SYMBOL_GPL(ata_pci_device_do_suspend);
EXPORT_SYMBOL_GPL(ata_pci_device_suspend);
EXPORT_SYMBOL_GPL(ata_pci_device_resume);
#endif /* CONFIG_PM */
-EXPORT_SYMBOL_GPL(ata_pci_default_filter);
-EXPORT_SYMBOL_GPL(ata_pci_clear_simplex);
#endif /* CONFIG_PCI */
-EXPORT_SYMBOL_GPL(sata_pmp_qc_defer_cmd_switch);
-EXPORT_SYMBOL_GPL(sata_pmp_std_prereset);
-EXPORT_SYMBOL_GPL(sata_pmp_std_hardreset);
-EXPORT_SYMBOL_GPL(sata_pmp_std_postreset);
-EXPORT_SYMBOL_GPL(sata_pmp_do_eh);
-
EXPORT_SYMBOL_GPL(__ata_ehi_push_desc);
EXPORT_SYMBOL_GPL(ata_ehi_push_desc);
EXPORT_SYMBOL_GPL(ata_ehi_clear_desc);
EXPORT_SYMBOL_GPL(ata_eh_thaw_port);
EXPORT_SYMBOL_GPL(ata_eh_qc_complete);
EXPORT_SYMBOL_GPL(ata_eh_qc_retry);
+EXPORT_SYMBOL_GPL(ata_eh_analyze_ncq_error);
EXPORT_SYMBOL_GPL(ata_do_eh);
-EXPORT_SYMBOL_GPL(ata_irq_on);
-EXPORT_SYMBOL_GPL(ata_dev_try_classify);
+EXPORT_SYMBOL_GPL(ata_std_error_handler);
EXPORT_SYMBOL_GPL(ata_cable_40wire);
EXPORT_SYMBOL_GPL(ata_cable_80wire);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff