* Hardware documentation available from http://www.t13.org/ and
* http://www.sata-io.org/
*
+ * Standards documents from:
+ * http://www.t13.org (ATA standards, PCI DMA IDE spec)
+ * http://www.t10.org (SCSI MMC - for ATAPI MMC)
+ * http://www.sata-io.org (SATA)
+ * http://www.compactflash.org (CF)
+ * http://www.qic.org (QIC157 - Tape and DSC)
+ * http://www.ce-ata.org (CE-ATA: not supported)
+ *
*/
#include <linux/kernel.h>
#include <linux/libata.h>
#include <asm/semaphore.h>
#include <asm/byteorder.h>
+#include <linux/cdrom.h>
#include "libata.h"
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++;
}
if ((dev->class == ATA_DEV_ATAPI) &&
- (atapi_command_packet_set(id) == TYPE_TAPE))
+ (atapi_command_packet_set(id) == TYPE_TAPE)) {
dev->max_sectors = ATA_MAX_SECTORS_TAPE;
+ dev->horkage |= ATA_HORKAGE_STUCK_ERR;
+ }
if (dev->horkage & ATA_HORKAGE_MAX_SEC_128)
dev->max_sectors = min_t(unsigned int, ATA_MAX_SECTORS_128,
}
}
-/**
- * __sata_phy_reset - Wake/reset a low-level SATA PHY
- * @ap: SATA port associated with target SATA PHY.
- *
- * This function issues commands to standard SATA Sxxx
- * PHY registers, to wake up the phy (and device), and
- * clear any reset condition.
- *
- * LOCKING:
- * PCI/etc. bus probe sem.
- *
- */
-void __sata_phy_reset(struct ata_port *ap)
-{
- struct ata_link *link = &ap->link;
- unsigned long timeout = jiffies + (HZ * 5);
- u32 sstatus;
-
- if (ap->flags & ATA_FLAG_SATA_RESET) {
- /* issue phy wake/reset */
- sata_scr_write_flush(link, SCR_CONTROL, 0x301);
- /* Couldn't find anything in SATA I/II specs, but
- * AHCI-1.1 10.4.2 says at least 1 ms. */
- mdelay(1);
- }
- /* phy wake/clear reset */
- sata_scr_write_flush(link, SCR_CONTROL, 0x300);
-
- /* wait for phy to become ready, if necessary */
- do {
- msleep(200);
- sata_scr_read(link, SCR_STATUS, &sstatus);
- if ((sstatus & 0xf) != 1)
- break;
- } while (time_before(jiffies, timeout));
-
- /* print link status */
- sata_print_link_status(link);
-
- /* TODO: phy layer with polling, timeouts, etc. */
- if (!ata_link_offline(link))
- ata_port_probe(ap);
- else
- ata_port_disable(ap);
-
- if (ap->flags & ATA_FLAG_DISABLED)
- return;
-
- if (ata_busy_sleep(ap, ATA_TMOUT_BOOT_QUICK, ATA_TMOUT_BOOT)) {
- ata_port_disable(ap);
- return;
- }
-
- ap->cbl = ATA_CBL_SATA;
-}
-
-/**
- * sata_phy_reset - Reset SATA bus.
- * @ap: SATA port associated with target SATA PHY.
- *
- * This function resets the SATA bus, and then probes
- * the bus for devices.
- *
- * LOCKING:
- * PCI/etc. bus probe sem.
- *
- */
-void sata_phy_reset(struct ata_port *ap)
-{
- __sata_phy_reset(ap);
- if (ap->flags & ATA_FLAG_DISABLED)
- return;
- ata_bus_reset(ap);
-}
-
/**
* ata_dev_pair - return other device on cable
* @adev: device
/* clear SError */
if (sata_scr_read(link, SCR_ERROR, &serror) == 0)
sata_scr_write(link, SCR_ERROR, serror);
+ link->eh_info.serror = 0;
/* is double-select really necessary? */
if (classes[0] != ATA_DEV_NONE)
/* Devices where NCQ should be avoided */
/* NCQ is slow */
{ "WDC WD740ADFD-00", NULL, ATA_HORKAGE_NONCQ },
+ { "WDC WD740ADFD-00NLR1", NULL, ATA_HORKAGE_NONCQ, },
/* http://thread.gmane.org/gmane.linux.ide/14907 */
{ "FUJITSU MHT2060BH", NULL, ATA_HORKAGE_NONCQ },
/* NCQ is broken */
{ "HITACHI HDS7250SASUN500G*", NULL, ATA_HORKAGE_NONCQ },
{ "HITACHI HDS7225SBSUN250G*", NULL, ATA_HORKAGE_NONCQ },
{ "ST380817AS", "3.42", ATA_HORKAGE_NONCQ },
+ { "ST3160023AS", "3.42", ATA_HORKAGE_NONCQ },
/* Blacklist entries taken from Silicon Image 3124/3132
Windows driver .inf file - also several Linux problem reports */
{ "HTS541060G9SA00", "MB3OC60D", ATA_HORKAGE_NONCQ, },
{ "HTS541080G9SA00", "MB4OC60D", ATA_HORKAGE_NONCQ, },
{ "HTS541010G9SA00", "MBZOC60D", ATA_HORKAGE_NONCQ, },
- /* Drives which do spurious command completion */
- { "HTS541680J9SA00", "SB2IC7EP", ATA_HORKAGE_NONCQ, },
- { "HTS541612J9SA00", "SBDIC7JP", ATA_HORKAGE_NONCQ, },
- { "HDT722516DLA380", "V43OA96A", ATA_HORKAGE_NONCQ, },
- { "Hitachi HTS541616J9SA00", "SB4OC70P", ATA_HORKAGE_NONCQ, },
- { "Hitachi HTS542525K9SA00", "BBFOC31P", ATA_HORKAGE_NONCQ, },
- { "WDC WD740ADFD-00NLR1", NULL, ATA_HORKAGE_NONCQ, },
- { "WDC WD3200AAJS-00RYA0", "12.01B01", ATA_HORKAGE_NONCQ, },
- { "FUJITSU MHV2080BH", "00840028", ATA_HORKAGE_NONCQ, },
- { "ST9120822AS", "3.CLF", ATA_HORKAGE_NONCQ, },
- { "ST9160821AS", "3.CLF", ATA_HORKAGE_NONCQ, },
- { "ST9160821AS", "3.ALD", ATA_HORKAGE_NONCQ, },
- { "ST9160821AS", "3.CCD", ATA_HORKAGE_NONCQ, },
- { "ST3160812AS", "3.ADJ", ATA_HORKAGE_NONCQ, },
- { "ST980813AS", "3.ADB", ATA_HORKAGE_NONCQ, },
- { "SAMSUNG HD401LJ", "ZZ100-15", ATA_HORKAGE_NONCQ, },
- { "Maxtor 7V300F0", "VA111900", ATA_HORKAGE_NONCQ, },
/* devices which puke on READ_NATIVE_MAX */
{ "HDS724040KLSA80", "KFAOA20N", ATA_HORKAGE_BROKEN_HPA, },
/* Devices which get the IVB wrong */
{ "QUANTUM FIREBALLlct10 05", "A03.0900", 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, },
/* End Marker */
{ }
return 0;
}
+/**
+ * atapi_qc_may_overflow - Check whether data transfer may overflow
+ * @qc: ATA command in question
+ *
+ * ATAPI commands which transfer variable length data to host
+ * might overflow due to application error or hardare bug. This
+ * function checks whether overflow should be drained and ignored
+ * for @qc.
+ *
+ * LOCKING:
+ * None.
+ *
+ * RETURNS:
+ * 1 if @qc may overflow; otherwise, 0.
+ */
+static int atapi_qc_may_overflow(struct ata_queued_cmd *qc)
+{
+ if (qc->tf.protocol != ATA_PROT_ATAPI &&
+ qc->tf.protocol != ATA_PROT_ATAPI_DMA)
+ return 0;
+
+ if (qc->tf.flags & ATA_TFLAG_WRITE)
+ return 0;
+
+ switch (qc->cdb[0]) {
+ case READ_10:
+ case READ_12:
+ case WRITE_10:
+ case WRITE_12:
+ case GPCMD_READ_CD:
+ case GPCMD_READ_CD_MSF:
+ return 0;
+ }
+
+ return 1;
+}
+
/**
* ata_std_qc_defer - Check whether a qc needs to be deferred
* @qc: ATA command in question
* Inherited from caller.
*
*/
-
-static void __atapi_pio_bytes(struct ata_queued_cmd *qc, unsigned int bytes)
+static int __atapi_pio_bytes(struct ata_queued_cmd *qc, unsigned int bytes)
{
int do_write = (qc->tf.flags & ATA_TFLAG_WRITE);
- struct scatterlist *sg = qc->__sg;
- struct scatterlist *lsg = sg_last(qc->__sg, qc->n_elem);
struct ata_port *ap = qc->ap;
+ struct ata_eh_info *ehi = &qc->dev->link->eh_info;
+ struct scatterlist *sg;
struct page *page;
unsigned char *buf;
unsigned int offset, count;
- int no_more_sg = 0;
-
- if (qc->curbytes + bytes >= qc->nbytes)
- ap->hsm_task_state = HSM_ST_LAST;
next_sg:
- if (unlikely(no_more_sg)) {
+ sg = qc->cursg;
+ if (unlikely(!sg)) {
/*
* The end of qc->sg is reached and the device expects
* more data to transfer. In order not to overrun qc->sg
* - for write case, padding zero data to the device
*/
u16 pad_buf[1] = { 0 };
- unsigned int words = bytes >> 1;
unsigned int i;
- if (words) /* warning if bytes > 1 */
- ata_dev_printk(qc->dev, KERN_WARNING,
- "%u bytes trailing data\n", bytes);
+ if (bytes > qc->curbytes - qc->nbytes + ATAPI_MAX_DRAIN) {
+ ata_ehi_push_desc(ehi, "too much trailing data "
+ "buf=%u cur=%u bytes=%u",
+ qc->nbytes, qc->curbytes, bytes);
+ return -1;
+ }
+
+ /* overflow is exptected for misc ATAPI commands */
+ if (bytes && !atapi_qc_may_overflow(qc))
+ ata_dev_printk(qc->dev, KERN_WARNING, "ATAPI %u bytes "
+ "trailing data (cdb=%02x nbytes=%u)\n",
+ bytes, qc->cdb[0], qc->nbytes);
- for (i = 0; i < words; i++)
+ for (i = 0; i < (bytes + 1) / 2; i++)
ap->ops->data_xfer(qc->dev, (unsigned char *)pad_buf, 2, do_write);
- ap->hsm_task_state = HSM_ST_LAST;
- return;
- }
+ qc->curbytes += bytes;
- sg = qc->cursg;
+ return 0;
+ }
page = sg_page(sg);
offset = sg->offset + qc->cursg_ofs;
}
bytes -= count;
+ if ((count & 1) && bytes)
+ bytes--;
qc->curbytes += count;
qc->cursg_ofs += count;
if (qc->cursg_ofs == sg->length) {
- if (qc->cursg == lsg)
- no_more_sg = 1;
-
qc->cursg = sg_next(qc->cursg);
qc->cursg_ofs = 0;
}
if (bytes)
goto next_sg;
+
+ return 0;
}
/**
VPRINTK("ata%u: xfering %d bytes\n", ap->print_id, bytes);
- __atapi_pio_bytes(qc, bytes);
+ if (__atapi_pio_bytes(qc, bytes))
+ goto err_out;
ata_altstatus(ap); /* flush */
return;
* 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;
+ /* 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).
if (ap->ops->port_start) {
rc = ap->ops->port_start(ap);
if (rc) {
- ata_port_printk(ap, KERN_ERR, "failed to "
- "start port (errno=%d)\n", rc);
+ if (rc != -ENODEV)
+ dev_printk(KERN_ERR, host->dev,
+ "failed to start port %d "
+ "(errno=%d)\n", i, rc);
goto err_out;
}
}
-
ata_eh_freeze_port(ap);
}
ata_port_wait_eh(ap);
- /* EH is now guaranteed to see UNLOADING, so no new device
- * will be attached. Disable all existing devices.
+ /* EH is now guaranteed to see UNLOADING - EH context belongs
+ * to us. Disable all existing devices.
*/
- spin_lock_irqsave(ap->lock, flags);
-
ata_port_for_each_link(link, ap) {
ata_link_for_each_dev(dev, link)
ata_dev_disable(dev);
}
- spin_unlock_irqrestore(ap->lock, flags);
-
/* Final freeze & EH. All in-flight commands are aborted. EH
* will be skipped and retrials will be terminated with bad
* target.
for (i = 0; i < host->n_ports; i++)
ata_port_detach(host->ports[i]);
+
+ /* the host is dead now, dissociate ACPI */
+ ata_acpi_dissociate(host);
}
/**
EXPORT_SYMBOL_GPL(sata_set_spd);
EXPORT_SYMBOL_GPL(sata_link_debounce);
EXPORT_SYMBOL_GPL(sata_link_resume);
-EXPORT_SYMBOL_GPL(sata_phy_reset);
-EXPORT_SYMBOL_GPL(__sata_phy_reset);
EXPORT_SYMBOL_GPL(ata_bus_reset);
EXPORT_SYMBOL_GPL(ata_std_prereset);
EXPORT_SYMBOL_GPL(ata_std_softreset);
#ifdef CONFIG_PCI
EXPORT_SYMBOL_GPL(ata_port_pbar_desc);
#endif /* CONFIG_PCI */
-EXPORT_SYMBOL_GPL(ata_eng_timeout);
EXPORT_SYMBOL_GPL(ata_port_schedule_eh);
EXPORT_SYMBOL_GPL(ata_link_abort);
EXPORT_SYMBOL_GPL(ata_port_abort);
projects / linux-2.6 / blobdiff