MODULE_PARM_DESC(mpt_loadtime_max_sectors,
" Maximum sector define for Host Bus Adaptor.Range 64 to 8192 default=8192");
+static int mpt_cmd_retry_count = 300;
+module_param(mpt_cmd_retry_count, int, 0);
+MODULE_PARM_DESC(mpt_cmd_retry_count,
+ " Device discovery TUR command retry count: default=300");
+
static u8 mptsasDoneCtx = MPT_MAX_PROTOCOL_DRIVERS;
static u8 mptsasTaskCtx = MPT_MAX_PROTOCOL_DRIVERS;
static u8 mptsasInternalCtx = MPT_MAX_PROTOCOL_DRIVERS; /* Used only for internal commands */
DEVICE_RETRY,
DEVICE_ERROR,
DEVICE_READY,
+ DEVICE_START_UNIT,
};
static int
}
}
+/**
+ * mptsas_get_lun_number - returns the first entry in report_luns table
+ * @ioc: Pointer to MPT_ADAPTER structure
+ * @channel:
+ * @id:
+ * @lun:
+ *
+ */
+static int
+mptsas_get_lun_number(MPT_ADAPTER *ioc, u8 channel, u8 id, int *lun)
+{
+ INTERNAL_CMD *iocmd;
+ struct scsi_lun *lun_data;
+ dma_addr_t lun_data_dma;
+ u32 lun_data_len;
+ u8 *data;
+ MPT_SCSI_HOST *hd;
+ int rc;
+ u32 length, num_luns;
+
+ iocmd = NULL;
+ hd = shost_priv(ioc->sh);
+ lun_data_len = (255 * sizeof(struct scsi_lun));
+ lun_data = pci_alloc_consistent(ioc->pcidev, lun_data_len,
+ &lun_data_dma);
+ if (!lun_data) {
+ printk(MYIOC_s_ERR_FMT "%s: pci_alloc_consistent(%d) FAILED!\n",
+ ioc->name, __FUNCTION__, lun_data_len);
+ rc = -ENOMEM;
+ goto out;
+ }
+
+ iocmd = kzalloc(sizeof(INTERNAL_CMD), GFP_KERNEL);
+ if (!iocmd) {
+ printk(MYIOC_s_ERR_FMT "%s: kzalloc(%zd) FAILED!\n",
+ ioc->name, __FUNCTION__, sizeof(INTERNAL_CMD));
+ rc = -ENOMEM;
+ goto out;
+ }
+
+ /*
+ * Report Luns
+ */
+ iocmd->cmd = REPORT_LUNS;
+ iocmd->data_dma = lun_data_dma;
+ iocmd->data = (u8 *)lun_data;
+ iocmd->size = lun_data_len;
+ iocmd->channel = channel;
+ iocmd->id = id;
+
+ if ((rc = mptscsih_do_cmd(hd, iocmd)) < 0) {
+ printk(MYIOC_s_ERR_FMT "%s: fw_channel=%d fw_id=%d: "
+ "report_luns failed due to rc=0x%x\n", ioc->name,
+ __FUNCTION__, channel, id, rc);
+ goto out;
+ }
+
+ if (rc != MPT_SCANDV_GOOD) {
+ printk(MYIOC_s_ERR_FMT "%s: fw_channel=%d fw_id=%d: "
+ "report_luns failed due to rc=0x%x\n", ioc->name,
+ __FUNCTION__, channel, id, rc);
+ rc = -rc;
+ goto out;
+ }
+
+ data = (u8 *)lun_data;
+ length = ((data[0] << 24) | (data[1] << 16) |
+ (data[2] << 8) | (data[3] << 0));
+
+ num_luns = (length / sizeof(struct scsi_lun));
+ if (!num_luns)
+ goto out;
+ /* return 1st lun in the list */
+ *lun = mpt_scsilun_to_int(&lun_data[1]);
+
+#if 0
+ /* some debugging, left commented out */
+ {
+ struct scsi_lun *lunp;
+ for (lunp = &lun_data[1]; lunp <= &lun_data[num_luns]; lunp++)
+ printk("%x\n", scsilun_to_int(lunp));
+ }
+#endif
+ out:
+ if (lun_data)
+ pci_free_consistent(ioc->pcidev, lun_data_len, lun_data,
+ lun_data_dma);
+ kfree(iocmd);
+ return rc;
+}
+
+/**
+ * mptsas_test_unit_ready -
+ * @ioc: Pointer to MPT_ADAPTER structure
+ * @channel:
+ * @id:
+ * @count: retry count
+ *
+ */
+enum device_state
+mptsas_test_unit_ready(MPT_ADAPTER *ioc, u8 channel, u8 id, u16 count)
+{
+ INTERNAL_CMD *iocmd;
+ MPT_SCSI_HOST *hd = shost_priv(ioc->sh);
+ enum device_state state;
+ int rc;
+ u8 skey, asc, ascq;
+ u8 retry_ua;
+
+ if (count >= mpt_cmd_retry_count)
+ return DEVICE_ERROR;
+
+ retry_ua = 0;
+ iocmd = kzalloc(sizeof(INTERNAL_CMD), GFP_KERNEL);
+ if (!iocmd) {
+ printk(MYIOC_s_ERR_FMT "%s: kzalloc(%zd) FAILED!\n",
+ __FUNCTION__, ioc->name, sizeof(INTERNAL_CMD));
+ return DEVICE_ERROR;
+ }
+
+ state = DEVICE_ERROR;
+ iocmd->cmd = TEST_UNIT_READY;
+ iocmd->data_dma = -1;
+ iocmd->data = NULL;
+
+ if (mptscsih_is_phys_disk(ioc, channel, id)) {
+ iocmd->flags |= MPT_ICFLAG_PHYS_DISK;
+ iocmd->physDiskNum = mptscsih_raid_id_to_num(ioc, channel, id);
+ }
+ iocmd->channel = channel;
+ iocmd->id = id;
+
+ retry:
+ devtprintk(ioc, printk(MYIOC_s_DEBUG_FMT "%s: fw_channel=%d "
+ "fw_id=%d retry=%d\n", ioc->name, __FUNCTION__, channel, id, count));
+ rc = mptscsih_do_cmd(hd, iocmd);
+ devtprintk(ioc, printk(MYIOC_s_DEBUG_FMT "%s: rc=0x%02x\n",
+ ioc->name, __FUNCTION__, rc));
+ if (rc < 0) {
+ printk(MYIOC_s_ERR_FMT "%s: fw_channel=%d fw_id=%d: "
+ "tur failed due to timeout\n", ioc->name,
+ __FUNCTION__, channel, id);
+ goto tur_done;
+ }
+
+ switch(rc) {
+ case MPT_SCANDV_GOOD:
+ state = DEVICE_READY;
+ goto tur_done;
+ case MPT_SCANDV_BUSY:
+ devtprintk(ioc, printk(MYIOC_s_DEBUG_FMT "%s: "
+ "fw_channel=%d fw_id=%d : device busy\n",
+ ioc->name, __FUNCTION__, channel, id));
+ state = DEVICE_RETRY;
+ break;
+ case MPT_SCANDV_DID_RESET:
+ devtprintk(ioc, printk(MYIOC_s_DEBUG_FMT "%s: "
+ "fw_channel=%d fw_id=%d : did reset\n",
+ ioc->name, __FUNCTION__, channel, id));
+ state = DEVICE_RETRY;
+ break;
+ case MPT_SCANDV_SENSE:
+ skey = ioc->internal_cmds.sense[2] & 0x0F;
+ asc = ioc->internal_cmds.sense[12];
+ ascq = ioc->internal_cmds.sense[13];
+
+ devtprintk(ioc, printk(MYIOC_s_DEBUG_FMT "%s: "
+ "fw_channel=%d fw_id=%d : [sense_key,asc,"
+ "ascq]: [0x%02x,0x%02x,0x%02x]\n", ioc->name,
+ __FUNCTION__, channel, id, skey, asc, ascq));
+
+ if (skey == UNIT_ATTENTION) {
+ state = DEVICE_RETRY;
+ break;
+ } else if (skey == NOT_READY) {
+ /* medium isn't present */
+ if (asc == 0x3a) {
+ state = DEVICE_READY;
+ goto tur_done;
+ }
+ /* LOGICAL UNIT NOT READY */
+ else if (asc == 0x04) {
+ if (ascq == 0x03 ||
+ ascq == 0x0b ||
+ ascq == 0x0c) {
+ state = DEVICE_ERROR;
+ } else {
+ state = DEVICE_START_UNIT;
+ break;
+ }
+ }
+ /* LOGICAL UNIT HAS NOT SELF-CONFIGURED YET */
+ else if (asc == 0x3e && !ascq) {
+ state = DEVICE_START_UNIT;
+ break;
+ }
+ } else if (skey == ILLEGAL_REQUEST) {
+ /* try sending a tur to a non-zero lun number */
+ if (!iocmd->lun && !mptsas_get_lun_number(ioc,
+ channel, id, &iocmd->lun) && iocmd->lun)
+ goto retry;
+ }
+ printk(MYIOC_s_ERR_FMT "%s: fw_channel=%d fw_id=%d : "
+ "tur failed due to [sense_key,asc,ascq]: "
+ "[0x%02x,0x%02x,0x%02x]\n", ioc->name,
+ __FUNCTION__, channel, id, skey, asc, ascq);
+ goto tur_done;
+ case MPT_SCANDV_SELECTION_TIMEOUT:
+ printk(MYIOC_s_ERR_FMT "%s: fw_channel=%d fw_id=%d: "
+ "tur failed due to no device\n", ioc->name,
+ __FUNCTION__, channel,
+ id);
+ goto tur_done;
+ case MPT_SCANDV_SOME_ERROR:
+ printk(MYIOC_s_ERR_FMT "%s: fw_channel=%d fw_id=%d: "
+ "tur failed due to some error\n", ioc->name,
+ __FUNCTION__,
+ channel, id);
+ goto tur_done;
+ default:
+ printk(MYIOC_s_ERR_FMT
+ "%s: fw_channel=%d fw_id=%d: tur failed due to "
+ "unknown rc=0x%02x\n", ioc->name, __FUNCTION__,
+ channel, id, rc );
+ goto tur_done;
+ }
+ tur_done:
+ /* Try Sending START_STOP scsi command */
+ if(state == DEVICE_START_UNIT) {
+ iocmd->cmd = START_STOP;
+ rc = mptscsih_do_cmd(hd, iocmd);
+ devtprintk(ioc, printk(MYIOC_s_DEBUG_FMT "%s: rc=0x%02x\n",
+ ioc->name, __FUNCTION__, rc));
+ /* No need to check return value rc, since TUR is going to be retried */
+ state = DEVICE_RETRY;
+ }
+ kfree(iocmd);
+ return state;
+}
static int
mptsas_slave_configure(struct scsi_device *sdev)
static void
mptsas_probe_devices(MPT_ADAPTER *ioc)
{
+ u16 retry_count;
u16 handle;
struct mptsas_devinfo sas_device;
struct mptsas_phyinfo *phy_info;
+ enum device_state state;
handle = 0xFFFF;
while (!(mptsas_sas_device_pg0(ioc, &sas_device,
if (mptsas_get_rphy(phy_info))
continue;
- mptsas_add_end_device(ioc, phy_info);
+ state = DEVICE_RETRY;
+ retry_count = 0;
+ while(state == DEVICE_RETRY) {
+ state = mptsas_test_unit_ready(ioc, sas_device.channel,
+ sas_device.id, retry_count++);
+ ssleep(1);
+ }
+ if (state == DEVICE_READY)
+ mptsas_add_end_device(ioc, phy_info);
+ else
+ memset(&phy_info->attached, 0, sizeof(struct mptsas_devinfo));
}
}
projects / users / jedix / linux-maple.git / commitdiff