mirror of https://gitee.com/openkylin/linux.git
ata: move ata_eh_analyze_ncq_error() & co. to libata-sata.c
* move ata_eh_analyze_ncq_error() and ata_eh_read_log_10h() to libata-sata.c * add static inline for ata_eh_analyze_ncq_error() for CONFIG_SATA_HOST=n case (link->sactive is non-zero only if NCQ commands are actually queued so empty function body is sufficient) Code size savings on m68k arch using (modified) atari_defconfig: text data bss dec hex filename before: 16164 18 0 16182 3f36 drivers/ata/libata-eh.o after: 15446 18 0 15464 3c68 drivers/ata/libata-eh.o Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Bartlomiej Zolnierkiewicz
Jens Axboe
parent
a695de27fc
commit
a0ccd2511b
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@ -1351,62 +1351,6 @@ static const char *ata_err_string(unsigned int err_mask)
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return "unknown error";
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}
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/**
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* ata_eh_read_log_10h - Read log page 10h for NCQ error details
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* @dev: Device to read log page 10h from
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* @tag: Resulting tag of the failed command
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* @tf: Resulting taskfile registers of the failed command
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*
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* Read log page 10h to obtain NCQ error details and clear error
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* condition.
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*
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* LOCKING:
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* Kernel thread context (may sleep).
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*
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* RETURNS:
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* 0 on success, -errno otherwise.
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*/
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static int ata_eh_read_log_10h(struct ata_device *dev,
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int *tag, struct ata_taskfile *tf)
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{
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u8 *buf = dev->link->ap->sector_buf;
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unsigned int err_mask;
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u8 csum;
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int i;
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err_mask = ata_read_log_page(dev, ATA_LOG_SATA_NCQ, 0, buf, 1);
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if (err_mask)
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return -EIO;
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csum = 0;
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for (i = 0; i < ATA_SECT_SIZE; i++)
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csum += buf[i];
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if (csum)
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ata_dev_warn(dev, "invalid checksum 0x%x on log page 10h\n",
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csum);
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if (buf[0] & 0x80)
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return -ENOENT;
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*tag = buf[0] & 0x1f;
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tf->command = buf[2];
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tf->feature = buf[3];
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tf->lbal = buf[4];
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tf->lbam = buf[5];
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tf->lbah = buf[6];
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tf->device = buf[7];
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tf->hob_lbal = buf[8];
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tf->hob_lbam = buf[9];
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tf->hob_lbah = buf[10];
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tf->nsect = buf[12];
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tf->hob_nsect = buf[13];
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if (dev->class == ATA_DEV_ZAC && ata_id_has_ncq_autosense(dev->id))
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tf->auxiliary = buf[14] << 16 | buf[15] << 8 | buf[16];
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return 0;
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}
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/**
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* atapi_eh_tur - perform ATAPI TEST_UNIT_READY
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* @dev: target ATAPI device
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@ -1590,81 +1534,6 @@ static void ata_eh_analyze_serror(struct ata_link *link)
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ehc->i.action |= action;
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}
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/**
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* ata_eh_analyze_ncq_error - analyze NCQ error
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* @link: ATA link to analyze NCQ error for
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*
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* Read log page 10h, determine the offending qc and acquire
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* error status TF. For NCQ device errors, all LLDDs have to do
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* is setting AC_ERR_DEV in ehi->err_mask. This function takes
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* care of the rest.
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*
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* LOCKING:
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* Kernel thread context (may sleep).
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*/
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void ata_eh_analyze_ncq_error(struct ata_link *link)
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{
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struct ata_port *ap = link->ap;
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struct ata_eh_context *ehc = &link->eh_context;
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struct ata_device *dev = link->device;
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struct ata_queued_cmd *qc;
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struct ata_taskfile tf;
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int tag, rc;
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/* if frozen, we can't do much */
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if (ap->pflags & ATA_PFLAG_FROZEN)
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return;
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/* is it NCQ device error? */
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if (!link->sactive || !(ehc->i.err_mask & AC_ERR_DEV))
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return;
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/* has LLDD analyzed already? */
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ata_qc_for_each_raw(ap, qc, tag) {
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if (!(qc->flags & ATA_QCFLAG_FAILED))
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continue;
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if (qc->err_mask)
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return;
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}
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/* okay, this error is ours */
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memset(&tf, 0, sizeof(tf));
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rc = ata_eh_read_log_10h(dev, &tag, &tf);
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if (rc) {
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ata_link_err(link, "failed to read log page 10h (errno=%d)\n",
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rc);
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return;
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}
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if (!(link->sactive & (1 << tag))) {
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ata_link_err(link, "log page 10h reported inactive tag %d\n",
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tag);
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return;
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}
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/* we've got the perpetrator, condemn it */
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qc = __ata_qc_from_tag(ap, tag);
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memcpy(&qc->result_tf, &tf, sizeof(tf));
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qc->result_tf.flags = ATA_TFLAG_ISADDR | ATA_TFLAG_LBA | ATA_TFLAG_LBA48;
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qc->err_mask |= AC_ERR_DEV | AC_ERR_NCQ;
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if (dev->class == ATA_DEV_ZAC &&
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((qc->result_tf.command & ATA_SENSE) || qc->result_tf.auxiliary)) {
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char sense_key, asc, ascq;
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sense_key = (qc->result_tf.auxiliary >> 16) & 0xff;
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asc = (qc->result_tf.auxiliary >> 8) & 0xff;
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ascq = qc->result_tf.auxiliary & 0xff;
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ata_scsi_set_sense(dev, qc->scsicmd, sense_key, asc, ascq);
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ata_scsi_set_sense_information(dev, qc->scsicmd,
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&qc->result_tf);
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qc->flags |= ATA_QCFLAG_SENSE_VALID;
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}
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ehc->i.err_mask &= ~AC_ERR_DEV;
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}
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EXPORT_SYMBOL_GPL(ata_eh_analyze_ncq_error);
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/**
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* ata_eh_analyze_tf - analyze taskfile of a failed qc
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* @qc: qc to analyze
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@ -1350,3 +1350,134 @@ int sata_async_notification(struct ata_port *ap)
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}
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}
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EXPORT_SYMBOL_GPL(sata_async_notification);
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/**
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* ata_eh_read_log_10h - Read log page 10h for NCQ error details
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* @dev: Device to read log page 10h from
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* @tag: Resulting tag of the failed command
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* @tf: Resulting taskfile registers of the failed command
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*
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* Read log page 10h to obtain NCQ error details and clear error
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* condition.
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*
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* LOCKING:
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* Kernel thread context (may sleep).
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*
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* RETURNS:
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* 0 on success, -errno otherwise.
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*/
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static int ata_eh_read_log_10h(struct ata_device *dev,
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int *tag, struct ata_taskfile *tf)
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{
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u8 *buf = dev->link->ap->sector_buf;
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unsigned int err_mask;
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u8 csum;
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int i;
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err_mask = ata_read_log_page(dev, ATA_LOG_SATA_NCQ, 0, buf, 1);
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if (err_mask)
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return -EIO;
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csum = 0;
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for (i = 0; i < ATA_SECT_SIZE; i++)
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csum += buf[i];
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if (csum)
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ata_dev_warn(dev, "invalid checksum 0x%x on log page 10h\n",
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csum);
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if (buf[0] & 0x80)
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return -ENOENT;
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*tag = buf[0] & 0x1f;
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tf->command = buf[2];
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tf->feature = buf[3];
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tf->lbal = buf[4];
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tf->lbam = buf[5];
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tf->lbah = buf[6];
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tf->device = buf[7];
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tf->hob_lbal = buf[8];
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tf->hob_lbam = buf[9];
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tf->hob_lbah = buf[10];
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tf->nsect = buf[12];
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tf->hob_nsect = buf[13];
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if (dev->class == ATA_DEV_ZAC && ata_id_has_ncq_autosense(dev->id))
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tf->auxiliary = buf[14] << 16 | buf[15] << 8 | buf[16];
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return 0;
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}
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/**
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* ata_eh_analyze_ncq_error - analyze NCQ error
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* @link: ATA link to analyze NCQ error for
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*
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* Read log page 10h, determine the offending qc and acquire
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* error status TF. For NCQ device errors, all LLDDs have to do
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* is setting AC_ERR_DEV in ehi->err_mask. This function takes
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* care of the rest.
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*
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* LOCKING:
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* Kernel thread context (may sleep).
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*/
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void ata_eh_analyze_ncq_error(struct ata_link *link)
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{
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struct ata_port *ap = link->ap;
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struct ata_eh_context *ehc = &link->eh_context;
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struct ata_device *dev = link->device;
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struct ata_queued_cmd *qc;
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struct ata_taskfile tf;
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int tag, rc;
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/* if frozen, we can't do much */
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if (ap->pflags & ATA_PFLAG_FROZEN)
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return;
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/* is it NCQ device error? */
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if (!link->sactive || !(ehc->i.err_mask & AC_ERR_DEV))
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return;
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/* has LLDD analyzed already? */
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ata_qc_for_each_raw(ap, qc, tag) {
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if (!(qc->flags & ATA_QCFLAG_FAILED))
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continue;
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if (qc->err_mask)
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return;
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}
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/* okay, this error is ours */
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memset(&tf, 0, sizeof(tf));
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rc = ata_eh_read_log_10h(dev, &tag, &tf);
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if (rc) {
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ata_link_err(link, "failed to read log page 10h (errno=%d)\n",
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rc);
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return;
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}
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if (!(link->sactive & (1 << tag))) {
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ata_link_err(link, "log page 10h reported inactive tag %d\n",
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tag);
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return;
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}
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/* we've got the perpetrator, condemn it */
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qc = __ata_qc_from_tag(ap, tag);
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memcpy(&qc->result_tf, &tf, sizeof(tf));
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qc->result_tf.flags = ATA_TFLAG_ISADDR | ATA_TFLAG_LBA | ATA_TFLAG_LBA48;
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qc->err_mask |= AC_ERR_DEV | AC_ERR_NCQ;
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if (dev->class == ATA_DEV_ZAC &&
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((qc->result_tf.command & ATA_SENSE) || qc->result_tf.auxiliary)) {
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char sense_key, asc, ascq;
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sense_key = (qc->result_tf.auxiliary >> 16) & 0xff;
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asc = (qc->result_tf.auxiliary >> 8) & 0xff;
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ascq = qc->result_tf.auxiliary & 0xff;
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ata_scsi_set_sense(dev, qc->scsicmd, sense_key, asc, ascq);
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ata_scsi_set_sense_information(dev, qc->scsicmd,
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&qc->result_tf);
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qc->flags |= ATA_QCFLAG_SENSE_VALID;
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}
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ehc->i.err_mask &= ~AC_ERR_DEV;
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}
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EXPORT_SYMBOL_GPL(ata_eh_analyze_ncq_error);
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@ -1181,6 +1181,7 @@ extern int sata_link_hardreset(struct ata_link *link,
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bool *online, int (*check_ready)(struct ata_link *));
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extern int sata_link_resume(struct ata_link *link, const unsigned long *params,
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unsigned long deadline);
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extern void ata_eh_analyze_ncq_error(struct ata_link *link);
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#else
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static inline const unsigned long *
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sata_ehc_deb_timing(struct ata_eh_context *ehc)
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@ -1217,6 +1218,7 @@ static inline int sata_link_resume(struct ata_link *link,
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{
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return -EOPNOTSUPP;
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}
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static inline void ata_eh_analyze_ncq_error(struct ata_link *link) { }
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#endif
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extern int sata_link_debounce(struct ata_link *link,
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const unsigned long *params, unsigned long deadline);
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@ -1339,7 +1341,6 @@ extern void ata_eh_thaw_port(struct ata_port *ap);
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extern void ata_eh_qc_complete(struct ata_queued_cmd *qc);
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extern void ata_eh_qc_retry(struct ata_queued_cmd *qc);
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extern void ata_eh_analyze_ncq_error(struct ata_link *link);
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extern void ata_do_eh(struct ata_port *ap, ata_prereset_fn_t prereset,
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ata_reset_fn_t softreset, ata_reset_fn_t hardreset,
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