[SCSI] qla4xxx: Added AER support for ISP82xx
Added support for PCI error handling Signed-off-by: Lalit Chandivade <lalit.chandivade@qlogic.com> Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com> Signed-off-by: Poornima Vonti <poornima.vonti@qlogic.com> Signed-off-by: Ravi Anand <ravi.anand@qlogic.com> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This commit is contained in:
Lalit Chandivade
James Bottomley
Родитель
2103363969
Коммит
2232be0d57
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@ -36,6 +36,24 @@
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#include "ql4_dbg.h"
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#include "ql4_nx.h"
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#if defined(CONFIG_PCIEAER)
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#include <linux/aer.h>
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#else
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/* AER releated */
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static inline int pci_enable_pcie_error_reporting(struct pci_dev *dev)
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{
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return -EINVAL;
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}
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static inline int pci_disable_pcie_error_reporting(struct pci_dev *dev)
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{
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return -EINVAL;
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}
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static inline int pci_cleanup_aer_uncorrect_error_status(struct pci_dev *dev)
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{
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return -EINVAL;
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}
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#endif
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#ifndef PCI_DEVICE_ID_QLOGIC_ISP4010
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#define PCI_DEVICE_ID_QLOGIC_ISP4010 0x4010
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#endif
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@ -381,7 +399,8 @@ struct scsi_qla_host {
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#define AF_MSIX_ENABLED 17 /* 0x00020000 */
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#define AF_MBOX_COMMAND_NOPOLL 18 /* 0x00040000 */
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#define AF_FW_RECOVERY 19 /* 0x00080000 */
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#define AF_EEH_BUSY 20 /* 0x00100000 */
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#define AF_PCI_CHANNEL_IO_PERM_FAILURE 21 /* 0x00200000 */
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unsigned long dpc_flags;
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@ -617,6 +636,15 @@ static inline int is_qla8022(struct scsi_qla_host *ha)
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return ha->pdev->device == PCI_DEVICE_ID_QLOGIC_ISP8022;
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}
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/* Note: Currently AER/EEH is now supported only for 8022 cards
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* This function needs to be updated when AER/EEH is enabled
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* for other cards.
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*/
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static inline int is_aer_supported(struct scsi_qla_host *ha)
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{
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return ha->pdev->device == PCI_DEVICE_ID_QLOGIC_ISP8022;
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}
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static inline int adapter_up(struct scsi_qla_host *ha)
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{
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return (test_bit(AF_ONLINE, &ha->flags) != 0) &&
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@ -132,6 +132,7 @@ void qla4_8xxx_idc_unlock(struct scsi_qla_host *ha);
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int qla4_8xxx_device_state_handler(struct scsi_qla_host *ha);
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void qla4_8xxx_need_qsnt_handler(struct scsi_qla_host *ha);
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void qla4_8xxx_clear_drv_active(struct scsi_qla_host *ha);
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inline void qla4_8xxx_set_drv_active(struct scsi_qla_host *ha);
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extern int ql4xextended_error_logging;
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extern int ql4xdiscoverywait;
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@ -308,7 +308,6 @@ static int qla4xxx_fw_ready(struct scsi_qla_host *ha)
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DEBUG2(printk("scsi%ld: %s: unable to get firmware "
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"state\n", ha->host_no, __func__));
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break;
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}
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if (ha->firmware_state & FW_STATE_ERROR) {
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@ -445,6 +444,10 @@ static int qla4xxx_init_firmware(struct scsi_qla_host *ha)
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{
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int status = QLA_ERROR;
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if (is_aer_supported(ha) &&
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test_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags))
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return status;
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/* For 82xx, stop firmware before initializing because if BIOS
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* has previously initialized firmware, then driver's initialize
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* firmware will fail. */
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@ -816,6 +816,9 @@ irqreturn_t qla4_8xxx_intr_handler(int irq, void *dev_id)
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unsigned long flags = 0;
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uint8_t reqs_count = 0;
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if (unlikely(pci_channel_offline(ha->pdev)))
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return IRQ_HANDLED;
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ha->isr_count++;
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status = qla4_8xxx_rd_32(ha, ISR_INT_VECTOR);
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if (!(status & ha->nx_legacy_intr.int_vec_bit))
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@ -48,6 +48,13 @@ int qla4xxx_mailbox_command(struct scsi_qla_host *ha, uint8_t inCount,
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return status;
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}
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if ((is_aer_supported(ha)) &&
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(test_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags))) {
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DEBUG2(printk(KERN_WARNING "scsi%ld: %s: Perm failure on EEH, "
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"timeout MBX Exiting.\n", ha->host_no, __func__));
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return status;
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}
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/* Mailbox code active */
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wait_count = MBOX_TOV * 100;
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@ -159,6 +166,7 @@ int qla4xxx_mailbox_command(struct scsi_qla_host *ha, uint8_t inCount,
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while (test_bit(AF_MBOX_COMMAND_DONE, &ha->flags) == 0) {
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if (time_after_eq(jiffies, wait_count))
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break;
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/*
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* Service the interrupt.
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* The ISR will save the mailbox status registers
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@ -1418,7 +1418,7 @@ static int qla4_8xxx_rcvpeg_ready(struct scsi_qla_host *ha)
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return QLA_SUCCESS;
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}
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static inline void
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inline void
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qla4_8xxx_set_drv_active(struct scsi_qla_host *ha)
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{
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uint32_t drv_active;
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@ -1441,11 +1441,15 @@ qla4_8xxx_clear_drv_active(struct scsi_qla_host *ha)
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static inline int
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qla4_8xxx_need_reset(struct scsi_qla_host *ha)
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{
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uint32_t drv_state;
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uint32_t drv_state, drv_active;
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int rval;
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drv_active = qla4_8xxx_rd_32(ha, QLA82XX_CRB_DRV_ACTIVE);
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drv_state = qla4_8xxx_rd_32(ha, QLA82XX_CRB_DRV_STATE);
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rval = drv_state & (1 << (ha->func_num * 4));
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if ((test_bit(AF_EEH_BUSY, &ha->flags)) && drv_active)
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rval = 1;
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return rval;
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}
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@ -475,6 +475,14 @@ static int qla4xxx_queuecommand(struct scsi_cmnd *cmd,
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struct srb *srb;
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int rval;
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if (test_bit(AF_EEH_BUSY, &ha->flags)) {
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if (test_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags))
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cmd->result = DID_NO_CONNECT << 16;
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else
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cmd->result = DID_REQUEUE << 16;
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goto qc_fail_command;
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}
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if (!sess) {
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cmd->result = DID_IMM_RETRY << 16;
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goto qc_fail_command;
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@ -655,6 +663,13 @@ static void qla4_8xxx_check_fw_alive(struct scsi_qla_host *ha)
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uint32_t fw_heartbeat_counter, halt_status;
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fw_heartbeat_counter = qla4_8xxx_rd_32(ha, QLA82XX_PEG_ALIVE_COUNTER);
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/* If PEG_ALIVE_COUNTER is 0xffffffff, AER/EEH is in progress, ignore */
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if (fw_heartbeat_counter == 0xffffffff) {
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DEBUG2(printk(KERN_WARNING "scsi%ld: %s: Device in frozen "
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"state, QLA82XX_PEG_ALIVE_COUNTER is 0xffffffff\n",
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ha->host_no, __func__));
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return;
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}
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if (ha->fw_heartbeat_counter == fw_heartbeat_counter) {
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ha->seconds_since_last_heartbeat++;
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@ -723,6 +738,19 @@ static void qla4xxx_timer(struct scsi_qla_host *ha)
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{
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struct ddb_entry *ddb_entry, *dtemp;
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int start_dpc = 0;
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uint16_t w;
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/* If we are in the middle of AER/EEH processing
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* skip any processing and reschedule the timer
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*/
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if (test_bit(AF_EEH_BUSY, &ha->flags)) {
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mod_timer(&ha->timer, jiffies + HZ);
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return;
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}
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/* Hardware read to trigger an EEH error during mailbox waits. */
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if (!pci_channel_offline(ha->pdev))
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pci_read_config_word(ha->pdev, PCI_VENDOR_ID, &w);
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if (test_bit(AF_HBA_GOING_AWAY, &ha->flags)) {
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DEBUG2(ql4_printk(KERN_INFO, ha, "%s exited. HBA GOING AWAY\n",
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@ -1213,6 +1241,12 @@ static void qla4xxx_do_dpc(struct work_struct *work)
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if (!test_bit(AF_INIT_DONE, &ha->flags))
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goto do_dpc_exit;
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if (test_bit(AF_EEH_BUSY, &ha->flags)) {
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DEBUG2(printk(KERN_INFO "scsi%ld: %s: flags = %lx\n",
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ha->host_no, __func__, ha->flags));
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goto do_dpc_exit;
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}
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/* HBA is in the process of being permanently disabled.
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* Don't process anything */
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if (test_bit(AF_HBA_GOING_AWAY, &ha->flags))
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@ -1618,6 +1652,8 @@ static int __devinit qla4xxx_probe_adapter(struct pci_dev *pdev,
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ha->host = host;
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ha->host_no = host->host_no;
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pci_enable_pcie_error_reporting(pdev);
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/* Setup Runtime configurable options */
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if (is_qla8022(ha)) {
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ha->isp_ops = &qla4_8xxx_isp_ops;
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@ -1636,6 +1672,10 @@ static int __devinit qla4xxx_probe_adapter(struct pci_dev *pdev,
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ha->isp_ops = &qla4xxx_isp_ops;
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}
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/* Set EEH reset type to fundamental if required by hba */
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if (is_qla8022(ha))
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pdev->needs_freset = 1;
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/* Configure PCI I/O space. */
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ret = ha->isp_ops->iospace_config(ha);
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if (ret)
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@ -1732,6 +1772,7 @@ static int __devinit qla4xxx_probe_adapter(struct pci_dev *pdev,
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}
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}
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pci_save_state(ha->pdev);
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ha->isp_ops->enable_intrs(ha);
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/* Start timer thread. */
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@ -1758,6 +1799,7 @@ probe_failed:
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qla4xxx_free_adapter(ha);
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probe_failed_ioconfig:
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pci_disable_pcie_error_reporting(pdev);
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scsi_host_put(ha->host);
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probe_disable_device:
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@ -1787,6 +1829,7 @@ static void __devexit qla4xxx_remove_adapter(struct pci_dev *pdev)
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scsi_host_put(ha->host);
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pci_disable_pcie_error_reporting(pdev);
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pci_disable_device(pdev);
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pci_set_drvdata(pdev, NULL);
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}
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@ -1883,6 +1926,17 @@ static int qla4xxx_eh_wait_on_command(struct scsi_qla_host *ha,
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int done = 0;
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struct srb *rp;
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uint32_t max_wait_time = EH_WAIT_CMD_TOV;
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int ret = SUCCESS;
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/* Dont wait on command if PCI error is being handled
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* by PCI AER driver
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*/
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if (unlikely(pci_channel_offline(ha->pdev)) ||
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(test_bit(AF_EEH_BUSY, &ha->flags))) {
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ql4_printk(KERN_WARNING, ha, "scsi%ld: Return from %s\n",
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ha->host_no, __func__);
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return ret;
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}
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do {
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/* Checking to see if its returned to OS */
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@ -2178,6 +2232,252 @@ static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd)
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return return_status;
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}
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/* PCI AER driver recovers from all correctable errors w/o
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* driver intervention. For uncorrectable errors PCI AER
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* driver calls the following device driver's callbacks
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*
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* - Fatal Errors - link_reset
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* - Non-Fatal Errors - driver's pci_error_detected() which
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* returns CAN_RECOVER, NEED_RESET or DISCONNECT.
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*
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* PCI AER driver calls
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* CAN_RECOVER - driver's pci_mmio_enabled(), mmio_enabled
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* returns RECOVERED or NEED_RESET if fw_hung
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* NEED_RESET - driver's slot_reset()
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* DISCONNECT - device is dead & cannot recover
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* RECOVERED - driver's pci_resume()
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*/
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static pci_ers_result_t
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qla4xxx_pci_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
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{
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struct scsi_qla_host *ha = pci_get_drvdata(pdev);
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ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: error detected:state %x\n",
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ha->host_no, __func__, state);
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if (!is_aer_supported(ha))
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return PCI_ERS_RESULT_NONE;
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switch (state) {
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case pci_channel_io_normal:
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clear_bit(AF_EEH_BUSY, &ha->flags);
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return PCI_ERS_RESULT_CAN_RECOVER;
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case pci_channel_io_frozen:
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set_bit(AF_EEH_BUSY, &ha->flags);
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qla4xxx_mailbox_premature_completion(ha);
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qla4xxx_free_irqs(ha);
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pci_disable_device(pdev);
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return PCI_ERS_RESULT_NEED_RESET;
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case pci_channel_io_perm_failure:
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set_bit(AF_EEH_BUSY, &ha->flags);
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set_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags);
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qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
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return PCI_ERS_RESULT_DISCONNECT;
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}
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return PCI_ERS_RESULT_NEED_RESET;
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}
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/**
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* qla4xxx_pci_mmio_enabled() gets called if
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* qla4xxx_pci_error_detected() returns PCI_ERS_RESULT_CAN_RECOVER
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* and read/write to the device still works.
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**/
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static pci_ers_result_t
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qla4xxx_pci_mmio_enabled(struct pci_dev *pdev)
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{
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struct scsi_qla_host *ha = pci_get_drvdata(pdev);
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if (!is_aer_supported(ha))
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return PCI_ERS_RESULT_NONE;
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if (test_bit(AF_FW_RECOVERY, &ha->flags)) {
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ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: firmware hang -- "
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"mmio_enabled\n", ha->host_no, __func__);
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return PCI_ERS_RESULT_NEED_RESET;
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} else
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return PCI_ERS_RESULT_RECOVERED;
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}
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uint32_t qla4_8xxx_error_recovery(struct scsi_qla_host *ha)
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{
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uint32_t rval = QLA_ERROR;
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int fn;
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struct pci_dev *other_pdev = NULL;
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ql4_printk(KERN_WARNING, ha, "scsi%ld: In %s\n", ha->host_no, __func__);
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set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
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if (test_bit(AF_ONLINE, &ha->flags)) {
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clear_bit(AF_ONLINE, &ha->flags);
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qla4xxx_mark_all_devices_missing(ha);
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qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
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qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
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}
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fn = PCI_FUNC(ha->pdev->devfn);
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while (fn > 0) {
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fn--;
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ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Finding PCI device at "
|
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"func %x\n", ha->host_no, __func__, fn);
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/* Get the pci device given the domain, bus,
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* slot/function number */
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other_pdev =
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pci_get_domain_bus_and_slot(pci_domain_nr(ha->pdev->bus),
|
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ha->pdev->bus->number, PCI_DEVFN(PCI_SLOT(ha->pdev->devfn),
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fn));
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if (!other_pdev)
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continue;
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|
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if (atomic_read(&other_pdev->enable_cnt)) {
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ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Found PCI "
|
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"func in enabled state%x\n", ha->host_no,
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__func__, fn);
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pci_dev_put(other_pdev);
|
||||
break;
|
||||
}
|
||||
pci_dev_put(other_pdev);
|
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}
|
||||
|
||||
/* The first function on the card, the reset owner will
|
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* start & initialize the firmware. The other functions
|
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* on the card will reset the firmware context
|
||||
*/
|
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if (!fn) {
|
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ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn being reset "
|
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"0x%x is the owner\n", ha->host_no, __func__,
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ha->pdev->devfn);
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|
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qla4_8xxx_idc_lock(ha);
|
||||
qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE,
|
||||
QLA82XX_DEV_COLD);
|
||||
|
||||
qla4_8xxx_wr_32(ha, QLA82XX_CRB_DRV_IDC_VERSION,
|
||||
QLA82XX_IDC_VERSION);
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||||
|
||||
qla4_8xxx_idc_unlock(ha);
|
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clear_bit(AF_FW_RECOVERY, &ha->flags);
|
||||
rval = qla4xxx_initialize_adapter(ha, PRESERVE_DDB_LIST);
|
||||
qla4_8xxx_idc_lock(ha);
|
||||
|
||||
if (rval != QLA_SUCCESS) {
|
||||
ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: "
|
||||
"FAILED\n", ha->host_no, __func__);
|
||||
qla4_8xxx_clear_drv_active(ha);
|
||||
qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE,
|
||||
QLA82XX_DEV_FAILED);
|
||||
} else {
|
||||
ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: "
|
||||
"READY\n", ha->host_no, __func__);
|
||||
qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE,
|
||||
QLA82XX_DEV_READY);
|
||||
/* Clear driver state register */
|
||||
qla4_8xxx_wr_32(ha, QLA82XX_CRB_DRV_STATE, 0);
|
||||
qla4_8xxx_set_drv_active(ha);
|
||||
ha->isp_ops->enable_intrs(ha);
|
||||
}
|
||||
qla4_8xxx_idc_unlock(ha);
|
||||
} else {
|
||||
ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn 0x%x is not "
|
||||
"the reset owner\n", ha->host_no, __func__,
|
||||
ha->pdev->devfn);
|
||||
if ((qla4_8xxx_rd_32(ha, QLA82XX_CRB_DEV_STATE) ==
|
||||
QLA82XX_DEV_READY)) {
|
||||
clear_bit(AF_FW_RECOVERY, &ha->flags);
|
||||
rval = qla4xxx_initialize_adapter(ha,
|
||||
PRESERVE_DDB_LIST);
|
||||
if (rval == QLA_SUCCESS)
|
||||
ha->isp_ops->enable_intrs(ha);
|
||||
qla4_8xxx_idc_lock(ha);
|
||||
qla4_8xxx_set_drv_active(ha);
|
||||
qla4_8xxx_idc_unlock(ha);
|
||||
}
|
||||
}
|
||||
clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
|
||||
return rval;
|
||||
}
|
||||
|
||||
static pci_ers_result_t
|
||||
qla4xxx_pci_slot_reset(struct pci_dev *pdev)
|
||||
{
|
||||
pci_ers_result_t ret = PCI_ERS_RESULT_DISCONNECT;
|
||||
struct scsi_qla_host *ha = pci_get_drvdata(pdev);
|
||||
int rc;
|
||||
|
||||
ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: slot_reset\n",
|
||||
ha->host_no, __func__);
|
||||
|
||||
if (!is_aer_supported(ha))
|
||||
return PCI_ERS_RESULT_NONE;
|
||||
|
||||
/* Restore the saved state of PCIe device -
|
||||
* BAR registers, PCI Config space, PCIX, MSI,
|
||||
* IOV states
|
||||
*/
|
||||
pci_restore_state(pdev);
|
||||
|
||||
/* pci_restore_state() clears the saved_state flag of the device
|
||||
* save restored state which resets saved_state flag
|
||||
*/
|
||||
pci_save_state(pdev);
|
||||
|
||||
/* Initialize device or resume if in suspended state */
|
||||
rc = pci_enable_device(pdev);
|
||||
if (rc) {
|
||||
ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Cant re-enable "
|
||||
"device after reset\n", ha->host_no, __func__);
|
||||
goto exit_slot_reset;
|
||||
}
|
||||
|
||||
ret = qla4xxx_request_irqs(ha);
|
||||
if (ret) {
|
||||
ql4_printk(KERN_WARNING, ha, "Failed to reserve interrupt %d"
|
||||
" already in use.\n", pdev->irq);
|
||||
goto exit_slot_reset;
|
||||
}
|
||||
|
||||
if (is_qla8022(ha)) {
|
||||
if (qla4_8xxx_error_recovery(ha) == QLA_SUCCESS) {
|
||||
ret = PCI_ERS_RESULT_RECOVERED;
|
||||
goto exit_slot_reset;
|
||||
} else
|
||||
goto exit_slot_reset;
|
||||
}
|
||||
|
||||
exit_slot_reset:
|
||||
ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Return=%x\n"
|
||||
"device after reset\n", ha->host_no, __func__, ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void
|
||||
qla4xxx_pci_resume(struct pci_dev *pdev)
|
||||
{
|
||||
struct scsi_qla_host *ha = pci_get_drvdata(pdev);
|
||||
int ret;
|
||||
|
||||
ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: pci_resume\n",
|
||||
ha->host_no, __func__);
|
||||
|
||||
ret = qla4xxx_wait_for_hba_online(ha);
|
||||
if (ret != QLA_SUCCESS) {
|
||||
ql4_printk(KERN_ERR, ha, "scsi%ld: %s: the device failed to "
|
||||
"resume I/O from slot/link_reset\n", ha->host_no,
|
||||
__func__);
|
||||
}
|
||||
|
||||
pci_cleanup_aer_uncorrect_error_status(pdev);
|
||||
clear_bit(AF_EEH_BUSY, &ha->flags);
|
||||
}
|
||||
|
||||
static struct pci_error_handlers qla4xxx_err_handler = {
|
||||
.error_detected = qla4xxx_pci_error_detected,
|
||||
.mmio_enabled = qla4xxx_pci_mmio_enabled,
|
||||
.slot_reset = qla4xxx_pci_slot_reset,
|
||||
.resume = qla4xxx_pci_resume,
|
||||
};
|
||||
|
||||
static struct pci_device_id qla4xxx_pci_tbl[] = {
|
||||
{
|
||||
.vendor = PCI_VENDOR_ID_QLOGIC,
|
||||
|
|
@ -2212,6 +2512,7 @@ static struct pci_driver qla4xxx_pci_driver = {
|
|||
.id_table = qla4xxx_pci_tbl,
|
||||
.probe = qla4xxx_probe_adapter,
|
||||
.remove = qla4xxx_remove_adapter,
|
||||
.err_handler = &qla4xxx_err_handler,
|
||||
};
|
||||
|
||||
static int __init qla4xxx_module_init(void)
|
||||
|
|
|
|||
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