* [RFC] [PATCH 2/7] qla4xxx: driver initialization routines
@ 2006-07-10 20:51 David Somayajulu
2006-07-10 20:54 ` [RFC] [PATCH 3/7] qla4xxx: driver OS interface files David Somayajulu
0 siblings, 1 reply; 7+ messages in thread
From: David Somayajulu @ 2006-07-10 20:51 UTC (permalink / raw)
To: linux-scsi
Cc: open-iscsi, David Somayajulu, David Wagner, Ravi Anand,
Duane Grigsby
qla4xxx driver initialization routines.
Signed-off-by: Ravi Anand <ravi.anand@qlogic.com>
Signed-off-by: David Somayajulu <david.somayajulu@qlogic.com>
Signed-off-by: Doug Maxey <dwm@bubba.enoyolf.org>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
---
diff --git a/drivers/scsi/qla4xxx/ql4_init.c b/drivers/scsi/qla4xxx/ql4_init.c
new file mode 100644
index 0000000..b8c31a1
--- /dev/null
+++ b/drivers/scsi/qla4xxx/ql4_init.c
@@ -0,0 +1,1602 @@
+/*
+ * QLogic iSCSI HBA Driver
+ * Copyright (c) 2003-2006 QLogic Corporation
+ *
+ * See LICENSE.qla4xxx for copyright and licensing details.
+ */
+
+#include "ql4_def.h"
+
+/*
+* QLogic ISP4xxx Hardware Support Function Prototypes.
+ */
+
+static void ql4xxx_set_mac_number(struct scsi_qla_host *ha)
+{
+ uint32_t value;
+ uint8_t func_number;
+ unsigned long flags;
+
+ /* Get the function number */
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ value = readw(&ha->reg->ctrl_status);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+ func_number = (uint8_t) ((value >> 4) & 0x30);
+ switch (value & ISP_CONTROL_FN_MASK) {
+ case ISP_CONTROL_FN0_SCSI:
+ ha->mac_index = 1;
+ break;
+ case ISP_CONTROL_FN1_SCSI:
+ ha->mac_index = 3;
+ break;
+ default:
+ DEBUG2(printk("scsi%ld: %s: Invalid function number, "
+ "ispControlStatus = 0x%x\n", ha->host_no,
+ __func__, value));
+ break;
+ }
+ DEBUG2(printk("scsi%ld: %s: mac_index %d.\n", ha->host_no, __func__,
+ ha->mac_index));
+}
+
+/**************************************************************************
+ * qla4xxx_free_ddb
+ * This routine deallocates and unlinks the specified ddb_entry from the
+ * adapter's
+ *
+ * Input:
+ * ha - Pointer to host adapter structure.
+ * ddb_entry - Pointer to device database entry
+ *
+ * Returns:
+ * None
+ **************************************************************************/
+void qla4xxx_free_ddb(struct scsi_qla_host *ha, struct ddb_entry *ddb_entry)
+{
+ /* Remove device entry from list */
+ list_del_init(&ddb_entry->list);
+
+ /* Remove device pointer from index mapping arrays */
+ ha->fw_ddb_index_map[ddb_entry->fw_ddb_index] =
+ (struct ddb_entry *) INVALID_ENTRY;
+ ha->tot_ddbs--;
+
+ /* Free memory and scsi-ml struct for device entry */
+ qla4xxx_destroy_sess(ddb_entry);
+}
+
+/**************************************************************************
+ * qla4xxx_free_ddb_list
+ * This routine deallocates and removes all devices on the sppecified
+ * adapter.
+ *
+ * Input:
+ * ha - Pointer to host adapter structure.
+ *
+ * Returns:
+ * None
+ **************************************************************************/
+void qla4xxx_free_ddb_list(struct scsi_qla_host *ha)
+{
+ struct list_head *ptr;
+ struct ddb_entry *ddb_entry;
+
+ while (!list_empty(&ha->ddb_list)) {
+ ptr = ha->ddb_list.next;
+ /* Free memory for device entry and remove */
+ ddb_entry = list_entry(ptr, struct ddb_entry, list);
+ qla4xxx_free_ddb(ha, ddb_entry);
+ }
+}
+
+/*
+ * qla4xxx_init_rings
+ * This routine initializes the internal queues for the specified adapter.
+ *
+ * Input:
+ * ha - Pointer to host adapter structure.
+ *
+ * Remarks:
+ * The QLA4010 requires us to restart the queues at index 0.
+ * The QLA4000 doesn't care, so just default to QLA4010's requirement.
+ * Returns:
+ * QLA_SUCCESS - Always return success.
+ */
+int qla4xxx_init_rings(struct scsi_qla_host *ha)
+{
+ uint16_t i;
+ unsigned long flags = 0;
+
+ /* Initialize request queue. */
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ ha->request_out = 0;
+ ha->request_in = 0;
+ ha->request_ptr = &ha->request_ring[ha->request_in];
+ ha->req_q_count = REQUEST_QUEUE_DEPTH;
+
+ /* Initialize response queue. */
+ ha->response_in = 0;
+ ha->response_out = 0;
+ ha->response_ptr = &ha->response_ring[ha->response_out];
+
+ /*
+ * Initialize DMA Shadow registers. The firmware is really supposed to
+ * take care of this, but on some uniprocessor systems, the shadow
+ * registers aren't cleared-- causing the interrupt_handler to think
+ * there are responses to be processed when there aren't.
+ */
+ ha->shadow_regs->req_q_out = __constant_cpu_to_le32(0);
+ ha->shadow_regs->rsp_q_in = __constant_cpu_to_le32(0);
+ wmb();
+
+ writel(0, &ha->reg->req_q_in);
+ writel(0, &ha->reg->rsp_q_out);
+ readl(&ha->reg->rsp_q_out);
+
+ /* Initialize active array */
+ for (i = 0; i < MAX_SRBS; i++)
+ ha->active_srb_array[i] = NULL;
+
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+ return QLA_SUCCESS;
+}
+
+/**************************************************************************
+ * qla4xxx_validate_mac_address
+ * This routine validates the M.A.C. Address(es) of the adapter
+ *
+ * Input:
+ * ha - Pointer to host adapter structure.
+ *
+ * Returns:
+ * QLA_SUCCESS - Successfully validated M.A.C. address
+ * QLA_ERROR - Failed to validate M.A.C. address
+ **************************************************************************/
+static int qla4xxx_validate_mac_address(struct scsi_qla_host *ha)
+{
+ struct flash_sys_info *sys_info;
+ dma_addr_t sys_info_dma;
+ int status = QLA_ERROR;
+
+ sys_info = dma_alloc_coherent(&ha->pdev->dev, sizeof(*sys_info),
+ &sys_info_dma, GFP_KERNEL);
+ if (sys_info == NULL) {
+ DEBUG2(printk("scsi%ld: %s: Unable to allocate dma buffer.\n",
+ ha->host_no, __func__));
+
+ goto exit_validate_mac_no_free;
+ }
+ memset(sys_info, 0, sizeof(*sys_info));
+
+ /* Get flash sys info */
+ if (qla4xxx_get_flash(ha, sys_info_dma, FLASH_OFFSET_SYS_INFO,
+ sizeof(*sys_info)) != QLA_SUCCESS) {
+ DEBUG2(printk("scsi%ld: %s: get_flash FLASH_OFFSET_SYS_INFO "
+ "failed\n", ha->host_no, __func__));
+
+ goto exit_validate_mac;
+ }
+
+ /* Save M.A.C. address & serial_number */
+ memcpy(ha->my_mac, &sys_info->physAddr[0].address[0],
+ min(sizeof(ha->my_mac),
+ sizeof(sys_info->physAddr[0].address)));
+ memcpy(ha->serial_number, &sys_info->acSerialNumber,
+ min(sizeof(ha->serial_number),
+ sizeof(sys_info->acSerialNumber)));
+
+ status = QLA_SUCCESS;
+
+ exit_validate_mac:
+ dma_free_coherent(&ha->pdev->dev, sizeof(*sys_info), sys_info,
+ sys_info_dma);
+
+ exit_validate_mac_no_free:
+ return status;
+}
+
+/*
+ * qla4xxx_init_local_data
+ * This routine initializes the local data for the specified adapter.
+ *
+ * Input:
+ * ha - Pointer to host adapter structure.
+ *
+ * Returns:
+ * QLA_SUCCESS - Successfully initialized local data
+ * QLA_ERROR - Failed to initialize local data
+ */
+static int qla4xxx_init_local_data(struct scsi_qla_host *ha)
+{
+ int i;
+
+ /* Initialize passthru PDU list */
+ for (i = 0; i < (MAX_PDU_ENTRIES - 1); i++)
+ ha->pdu_queue[i].Next = &ha->pdu_queue[i + 1];
+ ha->free_pdu_top = &ha->pdu_queue[0];
+ ha->free_pdu_bottom = &ha->pdu_queue[MAX_PDU_ENTRIES - 1];
+ ha->free_pdu_bottom->Next = NULL;
+ ha->pdu_active = 0;
+
+ /* Initilize aen queue */
+ ha->aen_q_count = MAX_AEN_ENTRIES;
+
+ return qla4xxx_get_firmware_status(ha);
+}
+
+static int qla4xxx_fw_ready(struct scsi_qla_host *ha)
+{
+ uint32_t timeout_count;
+ int ready = 0;
+
+ DEBUG2(ql4_printk(KERN_INFO, ha, "Waiting for Firmware Ready..\n"));
+ for (timeout_count = ADAPTER_INIT_TOV; timeout_count > 0;
+ timeout_count--) {
+ if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags))
+ qla4xxx_get_dhcp_ip_address(ha);
+
+ /* Get firmware state. */
+ if (qla4xxx_get_firmware_state(ha) != QLA_SUCCESS) {
+ DEBUG2(printk("scsi%ld: %s: unable to get firmware "
+ "state\n", ha->host_no, __func__));
+ break;
+
+ }
+
+ if (ha->firmware_state & FW_STATE_ERROR) {
+ DEBUG2(printk("scsi%ld: %s: an unrecoverable error has"
+ " occurred\n", ha->host_no, __func__));
+ break;
+
+ }
+ if (ha->firmware_state & FW_STATE_CONFIG_WAIT) {
+ /*
+ * The firmware has not yet been issued an Initialize
+ * Firmware command, so issue it now.
+ */
+ if (qla4xxx_initialize_fw_cb(ha) == QLA_ERROR)
+ break;
+
+ /* Go back and test for ready state - no wait. */
+ continue;
+ }
+
+ if (ha->firmware_state == FW_STATE_READY) {
+ DEBUG2(ql4_printk(KERN_INFO, ha,
+ "Firmware Ready..\n"));
+ /* The firmware is ready to process SCSI commands. */
+ DEBUG2(ql4_printk(KERN_INFO, ha,
+ "scsi%ld: %s: MEDIA TYPE - %s\n",
+ ha->host_no,
+ __func__, (ha->addl_fw_state &
+ FW_ADDSTATE_OPTICAL_MEDIA)
+ != 0 ? "OPTICAL" : "COPPER"));
+ DEBUG2(ql4_printk(KERN_INFO, ha,
+ "scsi%ld: %s: DHCP STATE Enabled "
+ "%s\n",
+ ha->host_no, __func__,
+ (ha->addl_fw_state &
+ FW_ADDSTATE_DHCP_ENABLED) != 0 ?
+ "YES" : "NO"));
+ DEBUG2(ql4_printk(KERN_INFO, ha,
+ "scsi%ld: %s: LINK %s\n",
+ ha->host_no, __func__,
+ (ha->addl_fw_state &
+ FW_ADDSTATE_LINK_UP) != 0 ?
+ "UP" : "DOWN"));
+ DEBUG2(ql4_printk(KERN_INFO, ha,
+ "scsi%ld: %s: iSNS Service "
+ "Started %s\n",
+ ha->host_no, __func__,
+ (ha->addl_fw_state &
+ FW_ADDSTATE_ISNS_SVC_ENABLED) != 0 ?
+ "YES" : "NO"));
+
+ ready = 1;
+ break;
+ }
+ DEBUG2(printk("scsi%ld: %s: waiting on fw, state=%x:%x - "
+ "seconds expired= %d\n", ha->host_no, __func__,
+ ha->firmware_state, ha->addl_fw_state,
+ timeout_count));
+ msleep(1000);
+ } /* end of for */
+
+ if (timeout_count <= 0)
+ DEBUG2(printk("scsi%ld: %s: FW Initialization timed out!\n",
+ ha->host_no, __func__));
+
+ if (ha->firmware_state & FW_STATE_DHCP_IN_PROGRESS) {
+ DEBUG2(printk("scsi%ld: %s: FW is reporting its waiting to"
+ " grab an IP address from DHCP server\n",
+ ha->host_no, __func__));
+ ready = 1;
+ }
+
+ return ready;
+}
+
+/*
+ * qla4xxx_init_firmware
+ * This routine initializes the firmware.
+ *
+ * Input:
+ * ha - Pointer to host adapter structure.
+ *
+ * Returns:
+ * QLA_SUCCESS - Successfully initialized firmware
+ * QLA_ERROR - Failed to initialize firmware
+ */
+static int qla4xxx_init_firmware(struct scsi_qla_host *ha)
+{
+ int status = QLA_ERROR;
+
+ ql4_printk(KERN_INFO, ha, "Initializing firmware..\n");
+ if (qla4xxx_initialize_fw_cb(ha) == QLA_ERROR) {
+ DEBUG2(printk("scsi%ld: %s: Failed to initialize firmware "
+ "control block\n", ha->host_no, __func__));
+ return status;
+ }
+ if (!qla4xxx_fw_ready(ha))
+ return status;
+
+ set_bit(AF_ONLINE, &ha->flags);
+ return qla4xxx_get_firmware_status(ha);
+}
+
+static struct ddb_entry* qla4xxx_get_ddb_entry(struct scsi_qla_host *ha,
+ uint32_t fw_ddb_index)
+{
+ struct dev_db_entry *fw_ddb_entry = NULL;
+ dma_addr_t fw_ddb_entry_dma;
+ struct ddb_entry *ddb_entry = NULL;
+ int found = 0;
+ uint32_t device_state;
+
+ /* Make sure the dma buffer is valid */
+ fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev,
+ sizeof(*fw_ddb_entry),
+ &fw_ddb_entry_dma, GFP_KERNEL);
+ if (fw_ddb_entry == NULL) {
+ DEBUG2(printk("scsi%ld: %s: Unable to allocate dma buffer.\n",
+ ha->host_no, __func__));
+ return NULL;
+ }
+
+ if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index, fw_ddb_entry,
+ fw_ddb_entry_dma, NULL, NULL,
+ &device_state, NULL, NULL, NULL) ==
+ QLA_ERROR) {
+ DEBUG2(printk("scsi%ld: %s: failed get_ddb_entry for "
+ "fw_ddb_index %d\n", ha->host_no, __func__,
+ fw_ddb_index));
+ return NULL;
+ }
+
+ /* Allocate DDB if not already allocated. */
+ DEBUG2(printk("scsi%ld: %s: Looking for ddb[%d]\n", ha->host_no,
+ __func__, fw_ddb_index));
+ list_for_each_entry(ddb_entry, &ha->ddb_list, list) {
+ if (memcmp(ddb_entry->iscsi_name, fw_ddb_entry->iscsiName,
+ ISCSI_NAME_SIZE) == 0) {
+ found++;
+ break;
+ }
+ }
+
+ if (!found) {
+ DEBUG2(printk("scsi%ld: %s: ddb[%d] not found - allocating "
+ "new ddb\n", ha->host_no, __func__,
+ fw_ddb_index));
+ ddb_entry = qla4xxx_alloc_ddb(ha, fw_ddb_index);
+ }
+
+ /* if not found allocate new ddb */
+ dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry), fw_ddb_entry,
+ fw_ddb_entry_dma);
+
+ return ddb_entry;
+}
+
+/**************************************************************************
+ * qla4xxx_update_ddb_entry
+ * This routine updates the driver's internal device database entry
+ * with information retrieved from the firmware's device database
+ * entry for the specified device.
+ *
+ * Input:
+ * ha - Pointer to host adapter structure.
+ * ddb_entry - Pointer to device database entry
+ *
+ * Output:
+ * ddb_entry - Structure filled in.
+ *
+ * Remarks:
+ * The ddb_entry->fw_ddb_index field must be initialized prior to
+ * calling this routine
+ *
+ * Returns:
+ * QLA_SUCCESS - Successfully update ddb_entry
+ * QLA_ERROR - Failed to update ddb_entry
+ **************************************************************************/
+int qla4xxx_update_ddb_entry(struct scsi_qla_host *ha,
+ struct ddb_entry *ddb_entry,
+ uint32_t fw_ddb_index)
+{
+ struct dev_db_entry *fw_ddb_entry = NULL;
+ dma_addr_t fw_ddb_entry_dma;
+ int status = QLA_ERROR;
+
+ if (ddb_entry == NULL) {
+ DEBUG2(printk("scsi%ld: %s: ddb_entry is NULL\n", ha->host_no,
+ __func__));
+ goto exit_update_ddb;
+ }
+
+ /* Make sure the dma buffer is valid */
+ fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev,
+ sizeof(*fw_ddb_entry),
+ &fw_ddb_entry_dma, GFP_KERNEL);
+ if (fw_ddb_entry == NULL) {
+ DEBUG2(printk("scsi%ld: %s: Unable to allocate dma buffer.\n",
+ ha->host_no, __func__));
+
+ goto exit_update_ddb;
+ }
+
+ if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index, fw_ddb_entry,
+ fw_ddb_entry_dma, NULL, NULL,
+ &ddb_entry->fw_ddb_device_state, NULL,
+ &ddb_entry->tcp_source_port_num,
+ &ddb_entry->connection_id) ==
+ QLA_ERROR) {
+ DEBUG2(printk("scsi%ld: %s: failed get_ddb_entry for "
+ "fw_ddb_index %d\n", ha->host_no, __func__,
+ fw_ddb_index));
+
+ goto exit_update_ddb;
+ }
+
+ status = QLA_SUCCESS;
+ ddb_entry->target_session_id = le16_to_cpu(fw_ddb_entry->TSID);
+ ddb_entry->task_mgmt_timeout =
+ le16_to_cpu(fw_ddb_entry->taskMngmntTimeout);
+ ddb_entry->CmdSn = 0;
+ ddb_entry->exe_throttle = le16_to_cpu(fw_ddb_entry->exeThrottle);
+ ddb_entry->default_relogin_timeout =
+ le16_to_cpu(fw_ddb_entry->taskMngmntTimeout);
+ ddb_entry->default_time2wait = le16_to_cpu(fw_ddb_entry->minTime2Wait);
+
+ /* Update index in case it changed */
+ ddb_entry->fw_ddb_index = fw_ddb_index;
+ ha->fw_ddb_index_map[fw_ddb_index] = ddb_entry;
+
+ ddb_entry->port = le16_to_cpu(fw_ddb_entry->portNumber);
+ ddb_entry->tpgt = le32_to_cpu(fw_ddb_entry->TargetPortalGroup);
+ memcpy(&ddb_entry->iscsi_name[0], &fw_ddb_entry->iscsiName[0],
+ min(sizeof(ddb_entry->iscsi_name),
+ sizeof(fw_ddb_entry->iscsiName)));
+ memcpy(&ddb_entry->ip_addr[0], &fw_ddb_entry->ipAddr[0],
+ min(sizeof(ddb_entry->ip_addr), sizeof(fw_ddb_entry->ipAddr)));
+
+ DEBUG2(printk("scsi%ld: %s: ddb[%d] - State= %x status= %d.\n",
+ ha->host_no, __func__, fw_ddb_index,
+ ddb_entry->fw_ddb_device_state, status));
+
+ exit_update_ddb:
+ if (fw_ddb_entry)
+ dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
+ fw_ddb_entry, fw_ddb_entry_dma);
+
+ return status;
+}
+
+/**************************************************************************
+ * qla4xxx_alloc_ddb
+ * This routine allocates a ddb_entry, ititializes some values, and
+ * inserts it into the ddb list.
+ *
+ * Input:
+ * ha - Pointer to host adapter structure.
+ * fw_ddb_index - Firmware's device database index
+ *
+ * Returns:
+ * Pointer to internal device database structure
+ **************************************************************************/
+struct ddb_entry * qla4xxx_alloc_ddb(struct scsi_qla_host *ha,
+ uint32_t fw_ddb_index)
+{
+ struct ddb_entry *ddb_entry;
+
+ DEBUG2(printk("scsi%ld: %s: fw_ddb_index [%d]\n", ha->host_no,
+ __func__, fw_ddb_index));
+
+ ddb_entry = qla4xxx_alloc_sess(ha);
+ if (ddb_entry == NULL) {
+ DEBUG2(printk("scsi%ld: %s: Unable to allocate memory "
+ "to add fw_ddb_index [%d]\n",
+ ha->host_no, __func__, fw_ddb_index));
+ return ddb_entry;
+ }
+
+ ddb_entry->fw_ddb_index = fw_ddb_index;
+ atomic_set(&ddb_entry->port_down_timer, ha->port_down_retry_count);
+ atomic_set(&ddb_entry->retry_relogin_timer, INVALID_ENTRY);
+ atomic_set(&ddb_entry->relogin_timer, 0);
+ atomic_set(&ddb_entry->relogin_retry_count, 0);
+ atomic_set(&ddb_entry->state, DDB_STATE_ONLINE);
+ list_add_tail(&ddb_entry->list, &ha->ddb_list);
+ ha->fw_ddb_index_map[fw_ddb_index] = ddb_entry;
+ ha->tot_ddbs++;
+
+ return ddb_entry;
+}
+
+/**************************************************************************
+ * qla4xxx_configure_ddbs
+ * This routine searches for all valid firmware ddb entries and builds
+ * an internal ddb list.
+ *
+ * Input:
+ * ha - Pointer to host adapter structure.
+ *
+ * Remarks:
+ * Ddbs that are considered valid are those with a device state of
+ * SESSION_ACTIVE.
+ *
+ * Returns:
+ * QLA_SUCCESS - Successfully built internal ddb list, if targets available
+ * QLA_ERROR - Error on a mailbox command
+ **************************************************************************/
+static int qla4xxx_build_ddb_list(struct scsi_qla_host *ha)
+{
+ int status = QLA_SUCCESS;
+ uint32_t fw_ddb_index = 0;
+ uint32_t next_fw_ddb_index = 0;
+ uint32_t ddb_state;
+ uint32_t conn_err, err_code;
+ struct ddb_entry *ddb_entry;
+
+ ql4_printk(KERN_INFO, ha, "Initializing DDBs ...\n");
+ for (fw_ddb_index = 0; fw_ddb_index < MAX_DDB_ENTRIES;
+ fw_ddb_index = next_fw_ddb_index) {
+ /* First, let's see if a device exists here */
+ if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index, NULL, 0, NULL,
+ &next_fw_ddb_index, &ddb_state,
+ &conn_err, NULL, NULL) ==
+ QLA_ERROR) {
+ DEBUG2(printk("scsi%ld: %s: get_ddb_entry, "
+ "fw_ddb_index %d failed", ha->host_no,
+ __func__, fw_ddb_index));
+ return QLA_ERROR;
+ }
+
+ DEBUG2(printk("scsi%ld: %s: Getting DDB[%d] ddbstate=0x%x, "
+ "next_fw_ddb_index=%d.\n", ha->host_no, __func__,
+ fw_ddb_index, ddb_state, next_fw_ddb_index));
+
+ /* Issue relogin, if necessary. */
+ if (ddb_state == DDB_DS_SESSION_FAILED ||
+ ddb_state == DDB_DS_NO_CONNECTION_ACTIVE) {
+ /* Try and login to device */
+ DEBUG2(printk("scsi%ld: %s: Login to DDB[%d]\n",
+ ha->host_no, __func__, fw_ddb_index));
+ err_code = ((conn_err & 0x00ff0000) >> 16);
+ if (err_code == 0x1c || err_code == 0x06) {
+ DEBUG2(printk("scsi%ld: %s send target "
+ "completed "
+ "or access denied failure\n",
+ ha->host_no, __func__));
+ } else
+ qla4xxx_set_ddb_entry(ha, fw_ddb_index, 0);
+ }
+
+ if (ddb_state != DDB_DS_SESSION_ACTIVE)
+ continue;
+ /*
+ * if fw_ddb with session active state found,
+ * add to ddb_list
+ */
+ DEBUG2(printk("scsi%ld: %s: DDB[%d] added to list\n",
+ ha->host_no, __func__, fw_ddb_index));
+
+ /* Add DDB to internal our ddb list. */
+ ddb_entry = qla4xxx_get_ddb_entry(ha, fw_ddb_index);
+ if (ddb_entry == NULL) {
+ DEBUG2(printk("scsi%ld: %s: Unable to allocate memory "
+ "for device at fw_ddb_index %d\n",
+ ha->host_no, __func__, fw_ddb_index));
+ return QLA_ERROR;
+ }
+ /* Fill in the device structure */
+ if (qla4xxx_update_ddb_entry(ha, ddb_entry, fw_ddb_index) ==
+ QLA_ERROR) {
+ ha->fw_ddb_index_map[fw_ddb_index] =
+ (struct ddb_entry *)INVALID_ENTRY;
+
+
+ DEBUG2(printk("scsi%ld: %s: update_ddb_entry failed "
+ "for fw_ddb_index %d.\n",
+ ha->host_no, __func__, fw_ddb_index));
+ return QLA_ERROR;
+ }
+
+ /* We know we've reached the last device when
+ * next_fw_ddb_index is 0 */
+ if (next_fw_ddb_index == 0)
+ break;
+ }
+
+ ql4_printk(KERN_INFO, ha, "DDB list done..\n");
+
+ return status;
+}
+
+struct qla4_relog_scan {
+ int halt_wait;
+ uint32_t conn_err;
+ uint32_t err_code;
+ uint32_t fw_ddb_index;
+ uint32_t next_fw_ddb_index;
+ uint32_t fw_ddb_device_state;
+};
+
+static int qla4_test_rdy(struct scsi_qla_host *ha, struct qla4_relog_scan *rs)
+{
+ struct ddb_entry *ddb_entry;
+
+ /*
+ * Don't want to do a relogin if connection
+ * error is 0x1c.
+ */
+ rs->err_code = ((rs->conn_err & 0x00ff0000) >> 16);
+ if (rs->err_code == 0x1c || rs->err_code == 0x06) {
+ DEBUG2(printk(
+ "scsi%ld: %s send target"
+ " completed or "
+ "access denied failure\n",
+ ha->host_no, __func__));
+ } else {
+ /* We either have a device that is in
+ * the process of relogging in or a
+ * device that is waiting to be
+ * relogged in */
+ rs->halt_wait = 0;
+
+ ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha,
+ rs->fw_ddb_index);
+ if (ddb_entry == NULL)
+ return QLA_ERROR;
+
+ if (ddb_entry->dev_scan_wait_to_start_relogin != 0
+ && time_after_eq(jiffies,
+ ddb_entry->
+ dev_scan_wait_to_start_relogin))
+ {
+ ddb_entry->dev_scan_wait_to_start_relogin = 0;
+ qla4xxx_set_ddb_entry(ha, rs->fw_ddb_index, 0);
+ }
+ }
+ return QLA_SUCCESS;
+}
+
+static int qla4_scan_for_relogin(struct scsi_qla_host *ha,
+ struct qla4_relog_scan *rs)
+{
+ int error;
+
+ /* scan for relogins
+ * ----------------- */
+ for (rs->fw_ddb_index = 0; rs->fw_ddb_index < MAX_DDB_ENTRIES;
+ rs->fw_ddb_index = rs->next_fw_ddb_index) {
+ if (qla4xxx_get_fwddb_entry(ha, rs->fw_ddb_index, NULL, 0,
+ NULL, &rs->next_fw_ddb_index,
+ &rs->fw_ddb_device_state,
+ &rs->conn_err, NULL, NULL)
+ == QLA_ERROR)
+ return QLA_ERROR;
+
+ if (rs->fw_ddb_device_state == DDB_DS_LOGIN_IN_PROCESS)
+ rs->halt_wait = 0;
+
+ if (rs->fw_ddb_device_state == DDB_DS_SESSION_FAILED ||
+ rs->fw_ddb_device_state == DDB_DS_NO_CONNECTION_ACTIVE) {
+ error = qla4_test_rdy(ha, rs);
+ if (error)
+ return error;
+ }
+
+ /* We know we've reached the last device when
+ * next_fw_ddb_index is 0 */
+ if (rs->next_fw_ddb_index == 0)
+ break;
+ }
+ return QLA_SUCCESS;
+}
+
+/**************************************************************************
+ * qla4xxx_devices_ready
+ * This routine waits up to ql4xdiscoverywait seconds
+ * F/W database during driver load time.
+ *
+ * Input:
+ * ha - Pointer to host adapter structure.
+ *
+ * Returns:
+ * QLA_SUCCESS - Successfully (re)built internal ddb list
+ * QLA_ERROR - Failed to (re)build internal ddb list
+ **************************************************************************/
+static int qla4xxx_devices_ready(struct scsi_qla_host *ha)
+{
+ int error;
+ unsigned long discovery_wtime;
+ struct qla4_relog_scan rs;
+
+ discovery_wtime = jiffies + (ql4xdiscoverywait * HZ);
+
+ DEBUG(printk("Waiting (%d) for devices ...\n", ql4xdiscoverywait));
+ do {
+ /* poll for AEN. */
+ qla4xxx_get_firmware_state(ha);
+ if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags)) {
+ /* Set time-between-relogin timer */
+ qla4xxx_process_aen(ha, RELOGIN_DDB_CHANGED_AENS);
+ }
+
+ /* if no relogins active or needed, halt discvery wait */
+ rs.halt_wait = 1;
+
+ error = qla4_scan_for_relogin(ha, &rs);
+
+ if (rs.halt_wait) {
+ DEBUG2(printk("scsi%ld: %s: Delay halted. Devices "
+ "Ready.\n", ha->host_no, __func__));
+ return QLA_SUCCESS;
+ }
+
+ msleep(2000);
+ } while (!time_after_eq(jiffies, discovery_wtime));
+
+ DEBUG3(qla4xxx_get_conn_event_log(ha));
+
+ return QLA_SUCCESS;
+}
+
+static void qla4xxx_flush_AENS(struct scsi_qla_host *ha)
+{
+ unsigned long wtime;
+
+ /* Flush the 0x8014 AEN from the firmware as a result of
+ * Auto connect. We are basically doing get_firmware_ddb()
+ * to determine whether we need to log back in or not.
+ * Trying to do a set ddb before we have processed 0x8014
+ * will result in another set_ddb() for the same ddb. In other
+ * words there will be stale entries in the aen_q.
+ */
+ wtime = jiffies + (2 * HZ);
+ do {
+ if (qla4xxx_get_firmware_state(ha) == QLA_SUCCESS)
+ if (ha->firmware_state & (BIT_2 | BIT_0))
+ return;
+
+ if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags))
+ qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
+
+ msleep(1000);
+ } while (!time_after_eq(jiffies, wtime));
+
+}
+
+static int qla4xxx_initialize_ddb_list(struct scsi_qla_host *ha)
+{
+ uint16_t fw_ddb_index;
+ int status = QLA_SUCCESS;
+
+ /* free the ddb list if is not empty */
+ if (!list_empty(&ha->ddb_list))
+ qla4xxx_free_ddb_list(ha);
+
+ for (fw_ddb_index = 0; fw_ddb_index < MAX_DDB_ENTRIES; fw_ddb_index++)
+ ha->fw_ddb_index_map[fw_ddb_index] =
+ (struct ddb_entry *)INVALID_ENTRY;
+
+ ha->tot_ddbs = 0;
+
+ qla4xxx_flush_AENS(ha);
+
+ /*
+ * First perform device discovery for active
+ * fw ddb indexes and build
+ * ddb list.
+ */
+ if ((status = qla4xxx_build_ddb_list(ha)) == QLA_ERROR)
+ return status;
+
+ /* Wait for an AEN */
+ qla4xxx_devices_ready(ha);
+
+ /*
+ * Targets can come online after the inital discovery, so processing
+ * the aens here will catch them.
+ */
+ if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags))
+ qla4xxx_process_aen(ha, PROCESS_ALL_AENS);
+
+ return status;
+}
+
+/*
+ * qla4xxx_update_ddb_list
+ * This routine obtains device information from the F/W database after
+ * firmware or adapter resets. The device table is preserved.
+ *
+ * Input:
+ * ha - Pointer to host adapter structure.
+ *
+ * Returns:
+ * QLA_SUCCESS - Successfully updated internal ddb list
+ * QLA_ERROR - Failed to update internal ddb list
+ */
+int qla4xxx_reinitialize_ddb_list(struct scsi_qla_host *ha)
+{
+ int status = QLA_SUCCESS;
+ struct ddb_entry *ddb_entry, *detemp;
+
+ /* Update the device information for all devices. */
+ list_for_each_entry_safe(ddb_entry, detemp, &ha->ddb_list, list) {
+ qla4xxx_update_ddb_entry(ha, ddb_entry,
+ ddb_entry->fw_ddb_index);
+ if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) {
+ atomic_set(&ddb_entry->state, DDB_STATE_ONLINE);
+ DEBUG2(printk ("scsi%ld: %s: ddb index [%d] marked "
+ "ONLINE\n", ha->host_no, __func__,
+ ddb_entry->fw_ddb_index));
+ } else if (atomic_read(&ddb_entry->state) == DDB_STATE_ONLINE)
+ qla4xxx_mark_device_missing(ha, ddb_entry);
+ }
+ return status;
+}
+
+/**************************************************************************
+ * qla4xxx_relogin_device
+ * This routine does a session relogin with the specified device.
+ * The ddb entry must be assigned prior to making this call.
+ *
+ * Input:
+ * ha - Pointer to host adapter structure.
+ * ddb_entry - Pointer to device database entry
+ *
+ * Returns:
+ * QLA_SUCCESS = Successfully relogged in device
+ * QLA_ERROR = Failed to relogin device
+ **************************************************************************/
+int qla4xxx_relogin_device(struct scsi_qla_host *ha,
+ struct ddb_entry * ddb_entry)
+{
+ uint16_t relogin_timer;
+
+ relogin_timer = max(ddb_entry->default_relogin_timeout,
+ (uint16_t)RELOGIN_TOV);
+ atomic_set(&ddb_entry->relogin_timer, relogin_timer);
+
+ DEBUG2(printk("scsi%ld: Relogin index [%d]. TOV=%d\n", ha->host_no,
+ ddb_entry->fw_ddb_index, relogin_timer));
+
+ qla4xxx_set_ddb_entry(ha, ddb_entry->fw_ddb_index, 0);
+
+ return QLA_SUCCESS;
+}
+
+/**************************************************************************
+ * qla4010_topcat_soft_reset
+ * This routine determines if the QLA4040 TopCat chip is present.
+ *
+ * Input:
+ * ha - Pointer to host adapter structure.
+ *
+ * Returns:
+ * None.
+ **************************************************************************/
+static void qla4010_get_topcat_presence(struct scsi_qla_host *ha)
+{
+ unsigned long flags;
+ uint16_t topcat;
+
+ ql4xxx_lock_nvram(ha);
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ topcat = rd_nvram_word(ha, offsetof(struct eeprom_data,
+ isp4010.topcat));
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+ if ((topcat & TOPCAT_MASK) == TOPCAT_PRESENT)
+ set_bit(AF_TOPCAT_CHIP_PRESENT, &ha->flags);
+ else
+ clear_bit(AF_TOPCAT_CHIP_PRESENT, &ha->flags);
+ ql4xxx_unlock_nvram(ha);
+}
+
+
+static int qla4xxx_config_nvram(struct scsi_qla_host *ha)
+{
+ unsigned long flags;
+ union external_hw_config_reg extHwConfig;
+
+ DEBUG2(printk("scsi%ld: %s: Get EEProm parameters \n", ha->host_no,
+ __func__));
+ ql4xxx_lock_flash(ha);
+ ql4xxx_lock_nvram(ha);
+
+ /* Get EEPRom Parameters from NVRAM and validate */
+ ql4_printk(KERN_INFO, ha, "Configuring NVRAM ...\n");
+ if (qla4xxx_is_nvram_configuration_valid(ha) == QLA_SUCCESS) {
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ extHwConfig.Asuint32_t =
+ rd_nvram_word(ha, eeprom_ext_hw_conf_offset(ha));
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+ } else {
+ /*
+ * QLogic adapters should always have a valid NVRAM.
+ * If not valid, do not load.
+ */
+ ql4_printk(KERN_WARNING, ha,
+ "scsi%ld: %s: EEProm checksum invalid. "
+ "Please update your EEPROM\n", ha->host_no,
+ __func__);
+
+ /* set defaults */
+ if (is_qla4010(ha))
+ extHwConfig.Asuint32_t = 0x1912;
+ else if (is_qla4022(ha))
+ extHwConfig.Asuint32_t = 0x0023;
+ }
+ DEBUG(printk("scsi%ld: %s: Setting extHwConfig to 0xFFFF%04x\n",
+ ha->host_no, __func__, extHwConfig.Asuint32_t));
+
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ writel((0xFFFF << 16) | extHwConfig.Asuint32_t, isp_ext_hw_conf(ha));
+ readl(isp_ext_hw_conf(ha));
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+ ql4xxx_unlock_nvram(ha);
+ ql4xxx_unlock_flash(ha);
+
+ return 1;
+}
+
+static void qla4x00_pci_config(struct scsi_qla_host *ha)
+{
+ uint16_t w, mwi;
+
+ ql4_printk(KERN_INFO, ha, "Configuring PCI space...\n");
+
+ pci_set_master(ha->pdev);
+ mwi = 0;
+ if (pci_set_mwi(ha->pdev))
+ mwi = PCI_COMMAND_INVALIDATE;
+ /*
+ * We want to respect framework's setting of PCI configuration space
+ * command register and also want to make sure that all bits of
+ * interest to us are properly set in command register.
+ */
+ pci_read_config_word(ha->pdev, PCI_COMMAND, &w);
+ w |= mwi | (PCI_COMMAND_PARITY | PCI_COMMAND_SERR);
+ w &= ~PCI_COMMAND_INTX_DISABLE;
+ pci_write_config_word(ha->pdev, PCI_COMMAND, w);
+}
+
+static int qla4xxx_start_firmware_from_flash(struct scsi_qla_host *ha)
+{
+ int status = QLA_ERROR;
+ uint32_t max_wait_time;
+ unsigned long flags;
+ uint32_t mbox_status;
+
+ ql4_printk(KERN_INFO, ha, "Starting firmware ...\n");
+
+ /*
+ * Start firmware from flash ROM
+ *
+ * WORKAROUND: Stuff a non-constant value that the firmware can
+ * use as a seed for a random number generator in MB7 prior to
+ * setting BOOT_ENABLE. Fixes problem where the TCP
+ * connections use the same TCP ports after each reboot,
+ * causing some connections to not get re-established.
+ */
+ DEBUG(printk("scsi%d: %s: Start firmware from flash ROM\n",
+ ha->host_no, __func__));
+
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ writel(jiffies, &ha->reg->mailbox[7]);
+ if (is_qla4022(ha))
+ writel(set_rmask(NVR_WRITE_ENABLE),
+ &ha->reg->u1.isp4022.nvram);
+
+ writel(set_rmask(CSR_BOOT_ENABLE), &ha->reg->ctrl_status);
+ readl(&ha->reg->ctrl_status);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+ /* Wait for firmware to come UP. */
+ max_wait_time = FIRMWARE_UP_TOV * 4;
+ do {
+ uint32_t ctrl_status;
+
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ ctrl_status = readw(&ha->reg->ctrl_status);
+ mbox_status = readw(&ha->reg->mailbox[0]);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+ if (ctrl_status & set_rmask(CSR_SCSI_PROCESSOR_INTR))
+ break;
+ if (mbox_status == MBOX_STS_COMMAND_COMPLETE)
+ break;
+
+ DEBUG2(printk("scsi%ld: %s: Waiting for boot firmware to "
+ "complete... ctrl_sts=0x%x, remaining=%d\n",
+ ha->host_no, __func__, ctrl_status,
+ max_wait_time));
+
+ msleep(250);
+ } while ((max_wait_time--));
+
+ if (mbox_status == MBOX_STS_COMMAND_COMPLETE) {
+ DEBUG(printk("scsi%ld: %s: Firmware has started\n",
+ ha->host_no, __func__));
+
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
+ &ha->reg->ctrl_status);
+ readl(&ha->reg->ctrl_status);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+ status = QLA_SUCCESS;
+ } else {
+ printk(KERN_INFO "scsi%ld: %s: Boot firmware failed "
+ "- mbox status 0x%x\n", ha->host_no, __func__,
+ mbox_status);
+ status = QLA_ERROR;
+ }
+ return status;
+}
+
+static void ql4xxx_lock_drvr_wait(struct scsi_qla_host *a)
+{
+ int i = 0;
+ while (1) {
+ if (ql4xxx_lock_drvr(a) == 0) {
+ msleep(10);
+ if (!i) {
+ DEBUG2(printk("scsi%ld: %s: Waiting for "
+ "Global Init Semaphore...n",
+ a->host_no,
+ __func__));
+ i++;
+ }
+ } else {
+ DEBUG2(printk("scsi%ld: %s: Global Init Semaphore "
+ "acquired.n", a->host_no, __func__));
+ break;
+ }
+ }
+}
+
+/**************************************************************************
+ * qla4xxx_start_firmware
+ * This routine performs the neccessary steps to start the firmware for
+ * the QLA4010 adapter.
+ *
+ * Input:
+ * ha - Pointer to host adapter structure.
+ *
+ * Returns:
+ * QLA_SUCCESS - Successfully started QLA4xxx firmware
+ * QLA_ERROR - Failed to start QLA4xxx firmware
+ **************************************************************************/
+static int qla4xxx_start_firmware(struct scsi_qla_host *ha)
+{
+ unsigned long flags = 0;
+ uint32_t mbox_status;
+ int status = QLA_ERROR;
+ int soft_reset = 1;
+ int config_chip = 0;
+
+ if (is_qla4010(ha))
+ qla4010_get_topcat_presence(ha);
+
+ if (is_qla4022(ha))
+ ql4xxx_set_mac_number(ha);
+
+ ql4xxx_lock_drvr_wait(ha);
+
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+
+ DEBUG2(printk("scsi%ld: %s: port_ctrl = 0x%08X\n", ha->host_no,
+ __func__, readw(isp_port_ctrl(ha))));
+ DEBUG(printk("scsi%ld: %s: port_status = 0x%08X\n", ha->host_no,
+ __func__, readw(isp_port_status(ha))));
+
+ /* Is Hardware already initialized? */
+ if ((readw(isp_port_ctrl(ha)) & 0x8000) != 0) {
+ DEBUG(printk("scsi%ld: %s: Hardware has already been "
+ "initialized\n", ha->host_no, __func__));
+
+ /* Receive firmware boot acknowledgement */
+ mbox_status = readw(&ha->reg->mailbox[0]);
+
+ DEBUG2(printk("scsi%ld: %s: H/W Config complete - mbox[0]= "
+ "0x%x\n", ha->host_no, __func__, mbox_status));
+
+ /* Is firmware already booted? */
+ if (mbox_status == 0) {
+ /* F/W not running, must be config by net driver */
+ config_chip = 1;
+ soft_reset = 0;
+ } else {
+ writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
+ &ha->reg->ctrl_status);
+ readl(&ha->reg->ctrl_status);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+ if (qla4xxx_get_firmware_state(ha) == QLA_SUCCESS) {
+ DEBUG2(printk("scsi%ld: %s: Get firmware "
+ "state -- state = 0x%x\n",
+ ha->host_no,
+ __func__, ha->firmware_state));
+ /* F/W is running */
+ if (ha->firmware_state &
+ FW_STATE_CONFIG_WAIT) {
+ DEBUG2(printk("scsi%ld: %s: Firmware "
+ "in known state -- "
+ "config and "
+ "boot, state = 0x%x\n",
+ ha->host_no, __func__,
+ ha->firmware_state));
+ config_chip = 1;
+ soft_reset = 0;
+ }
+ } else {
+ DEBUG2(printk("scsi%ld: %s: Firmware in "
+ "unknown state -- resetting,"
+ " state = "
+ "0x%x\n", ha->host_no, __func__,
+ ha->firmware_state));
+ }
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ }
+ } else {
+ DEBUG(printk("scsi%ld: %s: H/W initialization hasn't been "
+ "started - resetting\n", ha->host_no, __func__));
+ }
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+ DEBUG(printk("scsi%ld: %s: Flags soft_rest=%d, config= %d\n ",
+ ha->host_no, __func__, soft_reset, config_chip));
+ if (soft_reset) {
+ DEBUG(printk("scsi%ld: %s: Issue Soft Reset\n", ha->host_no,
+ __func__));
+ status = qla4xxx_soft_reset(ha);
+ if (status == QLA_ERROR) {
+ DEBUG(printk("scsi%d: %s: Soft Reset failed!\n",
+ ha->host_no, __func__));
+ ql4xxx_unlock_drvr(ha);
+ return QLA_ERROR;
+ }
+ config_chip = 1;
+
+ /* Reset clears the semaphore, so aquire again */
+ ql4xxx_lock_drvr_wait(ha);
+ }
+
+ if (config_chip) {
+ if (qla4xxx_config_nvram(ha))
+ status = qla4xxx_start_firmware_from_flash(ha);
+ }
+
+ ql4xxx_unlock_drvr(ha);
+ if (status == QLA_SUCCESS) {
+ qla4xxx_get_fw_version(ha);
+ if (test_and_clear_bit(AF_GET_CRASH_RECORD, &ha->flags))
+ qla4xxx_get_crash_record(ha);
+ } else {
+ DEBUG(printk("scsi%ld: %s: Firmware has NOT started\n",
+ ha->host_no, __func__));
+ }
+ return status;
+}
+
+
+/**************************************************************************
+ * qla4xxx_initialize_adapter
+ * This routine parforms all of the steps necessary to initialize the
+ * adapter.
+ *
+ * Input:
+ * ha - Pointer to host adapter structure.
+ * renew_ddb_list - Indicates what to do with the adapter's ddb list
+ * after adapter recovery has completed.
+ * 0=preserve ddb list, 1=destroy and rebuild ddb list
+ *
+ * Returns:
+ * QLA_SUCCESS - Successfully initialized adapter
+ * QLA_ERROR - Failed to initialize adapter
+ **************************************************************************/
+int qla4xxx_initialize_adapter(struct scsi_qla_host *ha,
+ uint8_t renew_ddb_list)
+{
+ int status = QLA_ERROR;
+ int8_t ip_address[IP_ADDR_LEN] = {0} ;
+
+ ha->eeprom_cmd_data = 0;
+
+ qla4x00_pci_config(ha);
+
+ qla4xxx_disable_intrs(ha);
+
+ /* Initialize the Host adapter request/response queues and firmware */
+ if (qla4xxx_start_firmware(ha) == QLA_ERROR)
+ return status;
+
+ if (qla4xxx_validate_mac_address(ha) == QLA_ERROR)
+ return status;
+
+ if (qla4xxx_init_local_data(ha) == QLA_ERROR)
+ return status;
+
+ status = qla4xxx_init_firmware(ha);
+ if (status == QLA_ERROR)
+ return status;
+
+ /*
+ * FW is waiting to get an IP address from DHCP server: Skip building
+ * the ddb_list and wait for DHCP lease acquired aen to come in
+ * followed by 0x8014 aen" to trigger the tgt discovery process.
+ */
+ if (ha->firmware_state & FW_STATE_DHCP_IN_PROGRESS)
+ return status;
+
+ /* Skip device discovery if ip and subnet is zero */
+ if (memcmp(ha->ip_address, ip_address, IP_ADDR_LEN) == 0 ||
+ memcmp(ha->subnet_mask, ip_address, IP_ADDR_LEN) == 0)
+ return status;
+
+ if (renew_ddb_list == PRESERVE_DDB_LIST) {
+ /*
+ * We want to preserve lun states (i.e. suspended, etc.)
+ * for recovery initiated by the driver. So just update
+ * the device states for the existing ddb_list.
+ */
+ qla4xxx_reinitialize_ddb_list(ha);
+ } else if (renew_ddb_list == REBUILD_DDB_LIST) {
+ /*
+ * We want to build the ddb_list from scratch during
+ * driver initialization and recovery initiated by the
+ * INT_HBA_RESET IOCTL.
+ */
+ status = qla4xxx_initialize_ddb_list(ha);
+ if (status == QLA_ERROR) {
+ DEBUG2(printk("%s(%ld) Error occurred during build"
+ "ddb list\n", __func__, ha->host_no));
+ goto exit_init_hba;
+ }
+
+ }
+ if (!ha->tot_ddbs) {
+ DEBUG2(printk("scsi%ld: Failed to initialize devices or none "
+ "present in Firmware device database\n",
+ ha->host_no));
+ }
+
+ exit_init_hba:
+ return status;
+
+}
+
+/**************************************************************************
+ * qla4xxx_add_device_dynamically
+ * This routine processes adds a device as a result of an 8014h AEN.
+ *
+ * Input:
+ * ha - Pointer to host adapter structure.
+ * fw_ddb_index - Firmware's device database index
+ *
+ * Returns:
+ * None
+ **************************************************************************/
+static void qla4xxx_add_device_dynamically(struct scsi_qla_host *ha,
+ uint32_t fw_ddb_index)
+{
+ struct ddb_entry * ddb_entry;
+
+ /* First allocate a device structure */
+ ddb_entry = qla4xxx_get_ddb_entry(ha, fw_ddb_index);
+ if (ddb_entry == NULL) {
+ DEBUG2(printk(KERN_WARNING
+ "scsi%ld: Unable to allocate memory to add "
+ "fw_ddb_index %d\n", ha->host_no, fw_ddb_index));
+ return;
+ }
+
+ if (qla4xxx_update_ddb_entry(ha, ddb_entry, fw_ddb_index) ==
+ QLA_ERROR) {
+ ha->fw_ddb_index_map[fw_ddb_index] =
+ (struct ddb_entry *)INVALID_ENTRY;
+ DEBUG2(printk(KERN_WARNING
+ "scsi%ld: failed to add new device at index "
+ "[%d]\n Unable to retrieve fw ddb entry\n",
+ ha->host_no, fw_ddb_index));
+ qla4xxx_free_ddb(ha, ddb_entry);
+ return;
+ }
+
+ if (qla4xxx_add_sess(ddb_entry)) {
+ DEBUG2(printk(KERN_WARNING
+ "scsi%ld: failed to add new device at index "
+ "[%d]\n Unable to add connection and session\n",
+ ha->host_no, fw_ddb_index));
+ qla4xxx_free_ddb(ha, ddb_entry);
+ }
+}
+
+/**************************************************************************
+ * qla4xxx_process_ddb_changed
+ * This routine processes a Decive Database Changed AEN Event.
+ *
+ * Input:
+ * ha - Pointer to host adapter structure.
+ * fw_ddb_index - Firmware's device database index
+ * state - Device state
+ *
+ * Returns:
+ * QLA_SUCCESS - Successfully processed ddb_changed aen
+ * QLA_ERROR - Failed to process ddb_changed aen
+ **************************************************************************/
+int qla4xxx_process_ddb_changed(struct scsi_qla_host *ha,
+ uint32_t fw_ddb_index, uint32_t state)
+{
+ struct ddb_entry * ddb_entry;
+ uint32_t old_fw_ddb_device_state;
+
+ /* check for out of range index */
+ if (fw_ddb_index >= MAX_DDB_ENTRIES)
+ return QLA_ERROR;
+
+ /* Get the corresponging ddb entry */
+ ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, fw_ddb_index);
+ /* Device does not currently exist in our database. */
+ if (ddb_entry == NULL) {
+ if (state == DDB_DS_SESSION_ACTIVE)
+ qla4xxx_add_device_dynamically(ha, fw_ddb_index);
+ return QLA_SUCCESS;
+ }
+
+ /* Device already exists in our database. */
+ old_fw_ddb_device_state = ddb_entry->fw_ddb_device_state;
+ DEBUG2(printk("scsi%ld: %s DDB - old state= 0x%x, new state=0x%x for "
+ "index [%d]\n", ha->host_no, __func__,
+ ddb_entry->fw_ddb_device_state, state, fw_ddb_index));
+ if (old_fw_ddb_device_state == state &&
+ state == DDB_DS_SESSION_ACTIVE) {
+ /* Do nothing, state not changed. */
+ return QLA_SUCCESS;
+ }
+
+ ddb_entry->fw_ddb_device_state = state;
+ /* Device is back online. */
+ if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) {
+ atomic_set(&ddb_entry->port_down_timer,
+ ha->port_down_retry_count);
+ atomic_set(&ddb_entry->state, DDB_STATE_ONLINE);
+ atomic_set(&ddb_entry->relogin_retry_count, 0);
+ atomic_set(&ddb_entry->relogin_timer, 0);
+ clear_bit(DF_RELOGIN, &ddb_entry->flags);
+ clear_bit(DF_NO_RELOGIN, &ddb_entry->flags);
+ iscsi_if_create_session_done(ddb_entry->conn);
+ /*
+ * Change the lun state to READY in case the lun TIMEOUT before
+ * the device came back.
+ */
+ } else {
+ /* Device went away, try to relogin. */
+ /* Mark device missing */
+ if (atomic_read(&ddb_entry->state) == DDB_STATE_ONLINE)
+ qla4xxx_mark_device_missing(ha, ddb_entry);
+ /*
+ * Relogin if device state changed to a not active state.
+ * However, do not relogin if this aen is a result of an IOCTL
+ * logout (DF_NO_RELOGIN) or if this is a discovered device.
+ */
+ if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_FAILED &&
+ !test_bit(DF_RELOGIN, &ddb_entry->flags) &&
+ !test_bit(DF_NO_RELOGIN, &ddb_entry->flags) &&
+ !test_bit(DF_ISNS_DISCOVERED, &ddb_entry->flags)) {
+ /*
+ * This triggers a relogin. After the relogin_timer
+ * expires, the relogin gets scheduled. We must wait a
+ * minimum amount of time since receiving an 0x8014 AEN
+ * with failed device_state or a logout response before
+ * we can issue another relogin.
+ */
+ /* Firmware padds this timeout: (time2wait +1).
+ * Driver retry to login should be longer than F/W.
+ * Otherwise F/W will fail
+ * set_ddb() mbx cmd with 0x4005 since it still
+ * counting down its time2wait.
+ */
+ atomic_set(&ddb_entry->relogin_timer, 0);
+ atomic_set(&ddb_entry->retry_relogin_timer,
+ ddb_entry->default_time2wait + 4);
+ }
+ }
+
+ return QLA_SUCCESS;
+}
+
+/**************************************************************************
+ * qla4xxx_login_device
+ * This routine is called by the login IOCTL to log in the specified
+ * device.
+ *
+ * Input:
+ * ha - Pointer to host adapter structure.
+ * fw_ddb_index - Index of the device to login
+ * connection_id - Connection ID of the device to login
+ *
+ * Returns:
+ * QLA_SUCCESS - Successfully logged in device
+ * QLA_ERROR - Failed to login device
+ **************************************************************************/
+int qla4xxx_login_device(struct scsi_qla_host *ha, uint16_t fw_ddb_index,
+ uint16_t connection_id)
+{
+ struct ddb_entry * ddb_entry;
+ int status = QLA_ERROR;
+
+ ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, fw_ddb_index);
+ if (ddb_entry == NULL)
+ goto exit_login_device;
+
+ if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index, NULL, 0, NULL, NULL,
+ &ddb_entry->fw_ddb_device_state, NULL,
+ NULL, NULL) == QLA_ERROR)
+ goto exit_login_device;
+
+ if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) {
+ status = QLA_SUCCESS;
+ goto exit_login_device;
+ }
+
+ if (qla4xxx_conn_close_sess_logout(ha, fw_ddb_index, connection_id,
+ LOGOUT_OPTION_RELOGIN)
+ != QLA_SUCCESS)
+ goto exit_login_device;
+
+ status = QLA_SUCCESS;
+
+exit_login_device:
+ return status;
+}
+
+/**************************************************************************
+ * qla4xxx_logout_device
+ * This support routine is called by the logout IOCTL to log out
+ * the specified device.
+ *
+ * Input:
+ * ha - Pointer to host adapter structure.
+ * fw_ddb_index - Index of the device to logout
+ * connection_id - Connection ID of the device to logout
+ *
+ * Returns:
+ * QLA_SUCCESS - Successfully logged out device
+ * QLA_ERROR - Failed to logout device
+ **************************************************************************/
+int qla4xxx_logout_device(struct scsi_qla_host *ha, uint16_t fw_ddb_index,
+ uint16_t connection_id)
+{
+ int status = QLA_ERROR;
+ struct ddb_entry * ddb_entry;
+ uint32_t old_fw_ddb_device_state;
+
+ ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, fw_ddb_index);
+ if (ddb_entry == NULL)
+ goto exit_logout_device;
+
+ if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index, NULL, 0, NULL, NULL,
+ &old_fw_ddb_device_state, NULL, NULL,
+ NULL) != QLA_SUCCESS)
+ goto exit_logout_device;
+
+ set_bit(DF_NO_RELOGIN, &ddb_entry->flags);
+ if (qla4xxx_conn_close_sess_logout(ha, fw_ddb_index, connection_id,
+ LOGOUT_OPTION_CLOSE_SESSION)
+ != QLA_SUCCESS)
+ goto exit_logout_device;
+
+ status = QLA_SUCCESS;
+
+exit_logout_device:
+ return status;
+}
+
+/*
+ * qla4xxx_delete_device
+ * This routine is called by the logout IOCTL to delete the specified
+ * device. Send the LOGOUT and DELETE_DDB commands for the specified
+ * target, even if it's not in our internal database.
+ *
+ * Input:
+ * ha - Pointer to host adapter structure.
+ * fw_ddb_index - Index of the device to delete
+ * connection_id - Connection ID of the device to delete
+ *
+ * Returns:
+ * QLA_SUCCESS - Successfully deleted device
+ * QLA_ERROR - Failed to delete device
+ */
+int qla4xxx_delete_device(struct scsi_qla_host *ha, uint16_t fw_ddb_index,
+ uint16_t connection_id)
+{
+ int status = QLA_ERROR;
+ uint32_t fw_ddb_device_state = 0xFFFF;
+ u_long wait_count;
+ struct ddb_entry * ddb_entry;
+
+ /* If the device is in our internal tables, set the NO_RELOGIN bit. */
+ ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, fw_ddb_index);
+ if (ddb_entry != NULL)
+ set_bit(DF_NO_RELOGIN, &ddb_entry->flags);
+
+ /*
+ * If the device state is already one that we can delete, bypass the
+ * logout command.
+ */
+ qla4xxx_get_fwddb_entry(ha, fw_ddb_index, NULL, 0, NULL, NULL,
+ &fw_ddb_device_state, NULL, NULL, NULL);
+ if (fw_ddb_device_state == DDB_DS_UNASSIGNED ||
+ fw_ddb_device_state == DDB_DS_NO_CONNECTION_ACTIVE ||
+ fw_ddb_device_state == DDB_DS_SESSION_FAILED)
+ goto delete_ddb;
+
+ /* First logout index */
+ if (qla4xxx_conn_close_sess_logout(ha, fw_ddb_index, connection_id,
+ LOGOUT_OPTION_CLOSE_SESSION) !=
+ QLA_SUCCESS) {
+ DEBUG2(printk("scsi%ld: %s: LOGOUT_OPTION_CLOSE_SESSION "
+ "failed index [%d]\n", ha->host_no, __func__,
+ fw_ddb_index));
+ goto exit_delete_ddb;
+ }
+
+ /* Wait enough time to complete logout */
+ wait_count = jiffies + LOGOUT_TOV * HZ;
+ while (qla4xxx_get_fwddb_entry(ha, fw_ddb_index, NULL, 0, NULL, NULL,
+ &fw_ddb_device_state, NULL, NULL, NULL)
+ == QLA_SUCCESS) {
+ if (time_after_eq(jiffies, wait_count))
+ goto exit_delete_ddb;
+ if (fw_ddb_device_state == DDB_DS_UNASSIGNED ||
+ fw_ddb_device_state == DDB_DS_NO_CONNECTION_ACTIVE ||
+ fw_ddb_device_state == DDB_DS_SESSION_FAILED)
+ break;
+ udelay(50);
+ }
+
+delete_ddb:
+ /* Now delete index */
+ if (qla4xxx_clear_database_entry(ha, fw_ddb_index) == QLA_SUCCESS) {
+ status = QLA_SUCCESS;
+
+ if (!ddb_entry)
+ goto exit_delete_ddb;
+
+ atomic_set(&ddb_entry->state, DDB_STATE_DEAD);
+ DEBUG(printk("scsi%ld: %s: removing index %d.\n", ha->host_no,
+ __func__, fw_ddb_index));
+ ha->fw_ddb_index_map[fw_ddb_index] =
+ (struct ddb_entry *)INVALID_ENTRY;
+ }
+
+exit_delete_ddb:
+ return status;
+
+}
diff --git a/drivers/scsi/qla4xxx/ql4_iocb.c b/drivers/scsi/qla4xxx/ql4_iocb.c
new file mode 100644
index 0000000..f5bf086
--- /dev/null
+++ b/drivers/scsi/qla4xxx/ql4_iocb.c
@@ -0,0 +1,592 @@
+/*
+ * QLogic iSCSI HBA Driver
+ * Copyright (c) 2003-2006 QLogic Corporation
+ *
+ * See LICENSE.qla4xxx for copyright and licensing details.
+ */
+
+#include "ql4_def.h"
+
+#include <scsi/scsi_tcq.h>
+
+/**************************************************************************
+ * qla4xxx_get_req_pkt
+ * This routine performs the following tasks:
+ * - returns the current request_in pointer (if queue not full)
+ * - advances the request_in pointer
+ * - checks for queue full
+ *
+ * Input:
+ * ha - Pointer to host adapter structure.
+ * queue_entry - Pointer to pointer to queue entry structure
+ *
+ * Output:
+ * queue_entry - Return pointer to next available request packet
+ *
+ * Returns:
+ * QLA_SUCCESS - Successfully retrieved request packet
+ * QLA_ERROR - Failed to retrieve request packet
+ **************************************************************************/
+int qla4xxx_get_req_pkt(struct scsi_qla_host *ha,
+ struct queue_entry **queue_entry)
+{
+ uint16_t request_in;
+ uint8_t status = QLA_SUCCESS;
+
+ *queue_entry = ha->request_ptr;
+
+ /* get the latest request_in and request_out index */
+ request_in = ha->request_in;
+ ha->request_out = (uint16_t) le32_to_cpu(ha->shadow_regs->req_q_out);
+
+ /* Advance request queue pointer and check for queue full */
+ if (request_in == (REQUEST_QUEUE_DEPTH - 1)) {
+ request_in = 0;
+ ha->request_ptr = ha->request_ring;
+ } else {
+ request_in++;
+ ha->request_ptr++;
+ }
+
+ /* request queue is full, try again later */
+ if ((ha->iocb_cnt + 1) >= ha->iocb_hiwat) {
+ /* restore request pointer */
+ ha->request_ptr = *queue_entry;
+ status = QLA_ERROR;
+ } else {
+ ha->request_in = request_in;
+ memset(*queue_entry, 0, sizeof(**queue_entry));
+ }
+
+ return status;
+}
+
+/**************************************************************************
+ * qla4xxx_send_marker_iocb
+ * This routine issues a marker IOCB.
+ *
+ * Input:
+ * ha - Pointer to host adapter structure.
+ * ddb_entry - Pointer to device database entry
+ * lun - SCSI LUN
+ * marker_type - marker identifier
+ *
+ * Returns:
+ * QLA_SUCCESS - Successfully sent marker IOCB
+ * QLA_ERROR - Failed to send marker IOCB
+ **************************************************************************/
+int qla4xxx_send_marker_iocb(struct scsi_qla_host *ha,
+ struct ddb_entry *ddb_entry, int lun)
+{
+ struct marker_entry *marker_entry;
+ unsigned long flags = 0;
+ uint8_t status = QLA_SUCCESS;
+
+ /* Acquire hardware specific lock */
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+
+ /* Get pointer to the queue entry for the marker */
+ if (qla4xxx_get_req_pkt(ha, (struct queue_entry **) &marker_entry) !=
+ QLA_SUCCESS) {
+ status = QLA_ERROR;
+ goto exit_send_marker;
+ }
+
+ /* Put the marker in the request queue */
+ marker_entry->hdr.entryType = ET_MARKER;
+ marker_entry->hdr.entryCount = 1;
+ marker_entry->target = cpu_to_le16(ddb_entry->fw_ddb_index);
+ marker_entry->modifier = cpu_to_le16(MM_LUN_RESET);
+ int_to_scsilun(lun, &marker_entry->lun);
+ wmb();
+
+ /* Tell ISP it's got a new I/O request */
+ writel(ha->request_in, &ha->reg->req_q_in);
+ readl(&ha->reg->req_q_in);
+
+exit_send_marker:
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+ return status;
+}
+
+struct pdu_entry * qla4xxx_get_pdu(struct scsi_qla_host * ha, uint32_t length)
+{
+ struct pdu_entry *pdu;
+ struct pdu_entry *free_pdu_top;
+ struct pdu_entry *free_pdu_bottom;
+ uint16_t pdu_active;
+
+ if (ha->free_pdu_top == NULL)
+ return NULL;
+
+ /* Save current state */
+ free_pdu_top = ha->free_pdu_top;
+ free_pdu_bottom = ha->free_pdu_bottom;
+ pdu_active = ha->pdu_active + 1;
+
+ /* get next available pdu */
+ pdu = free_pdu_top;
+ free_pdu_top = pdu->Next;
+ if (free_pdu_top == NULL)
+ free_pdu_bottom = NULL;
+
+ /* round up to nearest page */
+ length = (length + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
+
+ /* Allocate pdu buffer PDU */
+ pdu->Buff = dma_alloc_coherent(&ha->pdev->dev, length, &pdu->DmaBuff,
+ GFP_KERNEL);
+ if (pdu->Buff == NULL)
+ return NULL;
+
+ memset(pdu->Buff, 0, length);
+
+ /* Fill in remainder of PDU */
+ pdu->BuffLen = length;
+ pdu->SendBuffLen = 0;
+ pdu->RecvBuffLen = 0;
+ pdu->Next = NULL;
+ ha->free_pdu_top = free_pdu_top;
+ ha->free_pdu_bottom = free_pdu_bottom;
+ ha->pdu_active = pdu_active;
+ return pdu;
+}
+
+void qla4xxx_free_pdu(struct scsi_qla_host * ha, struct pdu_entry * pdu)
+{
+ if (ha->free_pdu_bottom == NULL) {
+ ha->free_pdu_top = pdu;
+ ha->free_pdu_bottom = pdu;
+ } else {
+ ha->free_pdu_bottom->Next = pdu;
+ ha->free_pdu_bottom = pdu;
+ }
+ dma_free_coherent(&ha->pdev->dev, pdu->BuffLen, pdu->Buff,
+ pdu->DmaBuff);
+ ha->pdu_active--;
+
+ /* Clear PDU */
+ pdu->Buff = NULL;
+ pdu->BuffLen = 0;
+ pdu->SendBuffLen = 0;
+ pdu->RecvBuffLen = 0;
+ pdu->Next = NULL;
+ pdu->DmaBuff = 0;
+}
+
+/**************************************************************************
+ * qla4xxx_send_passthru0_iocb
+ * This routine issues a passthru0 IOCB.
+ *
+ * Input:
+ * ha - Pointer to host adapter structure.
+ *
+ * Remarks: hardware_lock acquired upon entry, interrupt context
+ *
+ * Returns:
+ * QLA_SUCCESS - Successfully sent marker IOCB
+ * QLA_ERROR - Failed to send marker IOCB
+ **************************************************************************/
+int qla4_spt0_iocb(struct scsi_qla_host * ha,
+ uint16_t fw_ddb_index,
+ uint16_t connection_id,
+ dma_addr_t pdu_dma_data, uint32_t send_len,
+ uint32_t recv_len, uint16_t control_flags,
+ uint32_t handle)
+{
+ struct passthru0 *passthru_entry;
+ uint8_t status = QLA_SUCCESS;
+
+ /* Get pointer to the queue entry for the marker */
+ if (qla4xxx_get_req_pkt(ha, (struct queue_entry **) &passthru_entry) !=
+ QLA_SUCCESS) {
+ status = QLA_ERROR;
+ goto exit_send_pt0;
+ }
+
+ /* Fill in the request queue */
+ passthru_entry->hdr.entryType = ET_PASSTHRU0;
+ passthru_entry->hdr.entryCount = 1;
+ passthru_entry->handle = cpu_to_le32(handle);
+ passthru_entry->target = cpu_to_le16(fw_ddb_index);
+ passthru_entry->connectionID = cpu_to_le16(connection_id);
+ passthru_entry->timeout = __constant_cpu_to_le16(PT_DEFAULT_TIMEOUT);
+ if (send_len) {
+ control_flags |= PT_FLAG_SEND_BUFFER;
+ passthru_entry->outDataSeg64.base.addrHigh =
+ cpu_to_le32(MSDW(pdu_dma_data));
+ passthru_entry->outDataSeg64.base.addrLow =
+ cpu_to_le32(LSDW(pdu_dma_data));
+ passthru_entry->outDataSeg64.count = cpu_to_le32(send_len);
+ }
+ if (recv_len) {
+ passthru_entry->inDataSeg64.base.addrHigh =
+ cpu_to_le32(MSDW(pdu_dma_data));
+ passthru_entry->inDataSeg64.base.addrLow =
+ cpu_to_le32(LSDW(pdu_dma_data));
+ passthru_entry->inDataSeg64.count = cpu_to_le32(recv_len);
+ }
+ passthru_entry->controlFlags = cpu_to_le16(control_flags);
+ wmb();
+
+ /* Tell ISP it's got a new I/O request */
+ writel(ha->request_in, &ha->reg->req_q_in);
+ readl(&ha->reg->req_q_in);
+
+exit_send_pt0:
+ return status;
+}
+
+struct continuation_t1_entry* qla4xxx_alloc_cont_entry(
+ struct scsi_qla_host *ha)
+{
+ struct continuation_t1_entry *cont_entry;
+
+ cont_entry = (struct continuation_t1_entry *)ha->request_ptr;
+
+ /* Advance request queue pointer */
+ if (ha->request_in == (REQUEST_QUEUE_DEPTH - 1)) {
+ ha->request_in = 0;
+ ha->request_ptr = ha->request_ring;
+ } else {
+ ha->request_in++;
+ ha->request_ptr++;
+ }
+
+ /* Load packet defaults */
+ cont_entry->hdr.entryType = ET_CONTINUE;
+ cont_entry->hdr.entryCount = 1;
+ cont_entry->hdr.systemDefined = (uint8_t) cpu_to_le16(ha->request_in);
+
+ return cont_entry;
+}
+
+uint16_t qla4xxx_calc_request_entries(uint16_t dsds)
+{
+ uint16_t iocbs;
+
+ iocbs = 1;
+ if (dsds > COMMAND_SEG) {
+ iocbs += (dsds - COMMAND_SEG) / CONTINUE_SEG;
+ if ((dsds - COMMAND_SEG) % CONTINUE_SEG)
+ iocbs++;
+ }
+ return iocbs;
+}
+
+void qla4xxx_build_scsi_iocbs(struct srb *srb,
+ struct command_t3_entry *cmd_entry,
+ uint16_t tot_dsds)
+{
+ struct scsi_qla_host *ha;
+ uint16_t avail_dsds;
+ struct data_seg_a64 *cur_dsd;
+ struct scsi_cmnd *cmd;
+
+ cmd = srb->cmd;
+ ha = srb->ha;
+
+ if (cmd->request_bufflen == 0 || cmd->sc_data_direction == DMA_NONE) {
+ /* No data being transferred */
+ cmd_entry->ttlByteCnt = __constant_cpu_to_le32(0);
+ return;
+ }
+
+ avail_dsds = COMMAND_SEG;
+ cur_dsd = (struct data_seg_a64 *) & (cmd_entry->dataseg[0]);
+
+ /* Load data segments */
+ if (cmd->use_sg) {
+ struct scatterlist *cur_seg;
+ struct scatterlist *end_seg;
+
+ cur_seg = (struct scatterlist *)cmd->request_buffer;
+ end_seg = cur_seg + tot_dsds;
+ while (cur_seg < end_seg) {
+ dma_addr_t sle_dma;
+
+ /* Allocate additional continuation packets? */
+ if (avail_dsds == 0) {
+ struct continuation_t1_entry *cont_entry;
+
+ cont_entry = qla4xxx_alloc_cont_entry(ha);
+ cur_dsd =
+ (struct data_seg_a64 *)
+ &cont_entry->dataseg[0];
+ avail_dsds = CONTINUE_SEG;
+ }
+
+ sle_dma = sg_dma_address(cur_seg);
+ cur_dsd->base.addrLow = cpu_to_le32(LSDW(sle_dma));
+ cur_dsd->base.addrHigh = cpu_to_le32(MSDW(sle_dma));
+ cur_dsd->count = cpu_to_le32(sg_dma_len(cur_seg));
+ avail_dsds--;
+
+ cur_dsd++;
+ cur_seg++;
+ }
+ } else {
+ cur_dsd->base.addrLow = cpu_to_le32(LSDW(srb->dma_handle));
+ cur_dsd->base.addrHigh = cpu_to_le32(MSDW(srb->dma_handle));
+ cur_dsd->count = cpu_to_le32(cmd->request_bufflen);
+ }
+}
+
+/**************************************************************************
+ * qla4xxx_send_command_to_isp
+ * This routine is called by qla4xxx_queuecommand to build an ISP
+ * command and pass it to the ISP for execution.
+ *
+ * Input:
+ * ha - Pointer to host adapter structure.
+ * srb - pointer to SCSI Request Block to be sent to ISP
+ *
+ * Output:
+ * None
+ *
+ * Remarks:
+ * None
+ *
+ * Returns:
+ * QLA_SUCCESS - Successfully sent command to ISP
+ * QLA_ERROR - Failed to send command to ISP
+ **************************************************************************/
+int qla4xxx_send_command_to_isp(struct scsi_qla_host *ha, struct srb * srb)
+{
+ struct scsi_cmnd *cmd = srb->cmd;
+ struct ddb_entry *ddb_entry;
+ struct command_t3_entry *cmd_entry;
+ struct scatterlist *sg = NULL;
+
+ uint16_t tot_dsds;
+ uint16_t req_cnt;
+
+ unsigned long flags;
+ uint16_t cnt;
+ uint16_t i;
+ uint32_t index;
+ char tag[2];
+
+ /* Get real lun and adapter */
+ ddb_entry = srb->ddb;
+
+ /* Send marker(s) if needed. */
+ if (ha->marker_needed == 1) {
+ if (qla4xxx_send_marker_iocb(ha, ddb_entry,
+ cmd->device->lun) != QLA_SUCCESS)
+ return QLA_ERROR;
+
+ ha->marker_needed = 0;
+ }
+ tot_dsds = 0;
+
+ /* Acquire hardware specific lock */
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+
+ /* Check for room in active srb array */
+ index = ha->current_active_index;
+ for (i = 0; i < MAX_SRBS; i++) {
+ index++;
+ if (index == MAX_SRBS)
+ index = 1;
+ if (ha->active_srb_array[index] == 0) {
+ ha->current_active_index = index;
+ break;
+ }
+ }
+ if (i >= MAX_SRBS) {
+ printk(KERN_INFO "scsi%ld: %s: NO more SRB entries used "
+ "iocbs=%d, \n reqs remaining=%d\n", ha->host_no,
+ __func__, ha->iocb_cnt, ha->req_q_count);
+ goto queuing_error;
+ }
+
+ /* Calculate the number of request entries needed. */
+ if (cmd->use_sg) {
+ sg = (struct scatterlist *)cmd->request_buffer;
+ tot_dsds = pci_map_sg(ha->pdev, sg, cmd->use_sg,
+ cmd->sc_data_direction);
+ if (tot_dsds == 0)
+ goto queuing_error;
+ } else if (cmd->request_bufflen) {
+ dma_addr_t req_dma;
+
+ req_dma = pci_map_single(ha->pdev, cmd->request_buffer,
+ cmd->request_bufflen,
+ cmd->sc_data_direction);
+ if (dma_mapping_error(req_dma))
+ goto queuing_error;
+
+ srb->dma_handle = req_dma;
+ tot_dsds = 1;
+ }
+ req_cnt = qla4xxx_calc_request_entries(tot_dsds);
+
+ if (ha->req_q_count < (req_cnt + 2)) {
+ cnt = (uint16_t) le32_to_cpu(ha->shadow_regs->req_q_out);
+ if (ha->request_in < cnt)
+ ha->req_q_count = cnt - ha->request_in;
+ else
+ ha->req_q_count = REQUEST_QUEUE_DEPTH -
+ (ha->request_in - cnt);
+ }
+
+ if (ha->req_q_count < (req_cnt + 2))
+ goto queuing_error;
+
+ /* total iocbs active */
+ if ((ha->iocb_cnt + req_cnt) >= REQUEST_QUEUE_DEPTH)
+ goto queuing_error;
+
+ /* Build command packet */
+ cmd_entry = (struct command_t3_entry *) ha->request_ptr;
+ memset(cmd_entry, 0, sizeof(struct command_t3_entry));
+ cmd_entry->hdr.entryType = ET_COMMAND;
+ cmd_entry->handle = cpu_to_le32(index);
+ cmd_entry->target = cpu_to_le16(ddb_entry->fw_ddb_index);
+ cmd_entry->connection_id = cpu_to_le16(ddb_entry->connection_id);
+
+ int_to_scsilun(cmd->device->lun, &cmd_entry->lun);
+ cmd_entry->cmdSeqNum = cpu_to_le32(ddb_entry->CmdSn);
+ cmd_entry->ttlByteCnt = cpu_to_le32(cmd->request_bufflen);
+ memcpy(cmd_entry->cdb, cmd->cmnd, cmd->cmd_len);
+ cmd_entry->dataSegCnt = cpu_to_le16(tot_dsds);
+ cmd_entry->hdr.entryCount = req_cnt;
+
+ /* Set data transfer direction control flags
+ * NOTE: Look at data_direction bits iff there is data to be
+ * transferred, as the data direction bit is sometimed filled
+ * in when there is no data to be transferred */
+ cmd_entry->control_flags = CF_NO_DATA;
+ if (cmd->request_bufflen) {
+ if (cmd->sc_data_direction == DMA_TO_DEVICE)
+ cmd_entry->control_flags = CF_WRITE;
+ else if (cmd->sc_data_direction == DMA_FROM_DEVICE)
+ cmd_entry->control_flags = CF_READ;
+ }
+
+ /* Set tagged queueing control flags */
+ cmd_entry->control_flags |= CF_SIMPLE_TAG;
+ if (scsi_populate_tag_msg(cmd, tag))
+ switch (tag[0]) {
+ case MSG_HEAD_TAG:
+ cmd_entry->control_flags |= CF_HEAD_TAG;
+ break;
+ case MSG_ORDERED_TAG:
+ cmd_entry->control_flags |= CF_ORDERED_TAG;
+ break;
+ }
+
+
+ /* Advance request queue pointer */
+ ha->request_in++;
+ if (ha->request_in == REQUEST_QUEUE_DEPTH) {
+ ha->request_in = 0;
+ ha->request_ptr = ha->request_ring;
+ } else
+ ha->request_ptr++;
+
+
+ qla4xxx_build_scsi_iocbs(srb, cmd_entry, tot_dsds);
+ wmb();
+
+ /*
+ * Check to see if adapter is online before placing request on
+ * request queue. If a reset occurs and a request is in the queue,
+ * the firmware will still attempt to process the request, retrieving
+ * garbage for pointers.
+ */
+ if (!test_bit(AF_ONLINE, &ha->flags)) {
+ DEBUG2(printk("scsi%ld: %s: Adapter OFFLINE! "
+ "Do not issue command.\n",
+ ha->host_no, __func__));
+ goto queuing_error;
+ }
+
+ /* put command in active array */
+ ha->active_srb_array[index] = srb;
+ srb->cmd->host_scribble = (unsigned char *)(unsigned long)index;
+
+ /* update counters */
+ srb->state = SRB_ACTIVE_STATE;
+ srb->flags |= SRB_DMA_VALID;
+
+ /* Track IOCB used */
+ ha->iocb_cnt += req_cnt;
+ srb->iocb_cnt = req_cnt;
+ ha->req_q_count -= req_cnt;
+
+ /* Debug print statements */
+ writel(ha->request_in, &ha->reg->req_q_in);
+ readl(&ha->reg->req_q_in);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+ return QLA_SUCCESS;
+
+queuing_error:
+ if (cmd->use_sg && tot_dsds) {
+ sg = (struct scatterlist *) cmd->request_buffer;
+ pci_unmap_sg(ha->pdev, sg, cmd->use_sg,
+ cmd->sc_data_direction);
+ } else if (tot_dsds)
+ pci_unmap_single(ha->pdev, srb->dma_handle,
+ cmd->request_bufflen, cmd->sc_data_direction);
+
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+ return QLA_ERROR;
+}
+
+/*
+ * iSNS specific functions
+ */
+uint32_t qla4xxx_isns_iocb_handle(struct scsi_qla_host *ha,
+ uint32_t type,
+ struct pdu_entry * pduep)
+{
+ uint32_t handle;
+
+ handle = (iocb_isns_pt_pdu_type(type) |
+ (((uint8_t *)pduep - (uint8_t *)ha->pdu_queue)
+ / sizeof(struct pdu_entry)));
+
+ DEBUG2(printk("scsi%d: %s: type %x PDU %p = handle %x\n",
+ (int)ha->host_no, __func__,
+ type, pduep, handle));
+ return handle;
+}
+
+uint8_t qla4xxx_isns_get_server_request(struct scsi_qla_host *ha,
+ uint32_t pdu_buff_len,
+ uint16_t connection_id)
+{
+ struct pdu_entry *pdu_entry;
+
+ pdu_entry = qla4xxx_get_pdu(ha, PAGE_SIZE);
+ if (pdu_entry == NULL) {
+ DEBUG2(printk("scsi%d: %s: get_pdu failed\n",
+ (int)ha->host_no, __func__));
+ return QLA_ERROR;
+ }
+
+ pdu_entry->SendBuffLen = 0;
+ pdu_entry->RecvBuffLen = pdu_entry->BuffLen;
+
+ if (qla4_spt0_iocb(ha, 0, ISNS_DEFAULT_SERVER_CONN_ID,
+ pdu_entry->DmaBuff,
+ pdu_entry->SendBuffLen,
+ pdu_entry->RecvBuffLen,
+ PT_FLAG_ISNS_PDU |
+ PT_FLAG_WAIT_4_RESPONSE,
+ qla4xxx_isns_iocb_handle(ha,
+ ISNS_ASYNCH_REQ_PDU,
+ pdu_entry))
+ != QLA_SUCCESS) {
+ DEBUG2(printk("scsi%d: %s: send_passthru_iocb failed\n",
+ (int)ha->host_no, __func__));
+ qla4xxx_free_pdu(ha, pdu_entry);
+ return QLA_ERROR;
+ }
+
+ return QLA_SUCCESS;
+}
^ permalink raw reply related [flat|nested] 7+ messages in thread
* [RFC] [PATCH 3/7] qla4xxx: driver OS interface files
2006-07-10 20:51 [RFC] [PATCH 2/7] qla4xxx: driver initialization routines David Somayajulu
@ 2006-07-10 20:54 ` David Somayajulu
2006-07-10 20:57 ` [RFC] [PATCH 4/7] qla4xxx: driver ISR routines David Somayajulu
0 siblings, 1 reply; 7+ messages in thread
From: David Somayajulu @ 2006-07-10 20:54 UTC (permalink / raw)
To: linux-scsi
Cc: open-iscsi, David Wagner, Ravi Anand, Duane Grigsby,
David Somayajulu
qla4xxx driver OS files.
Signed-off-by: Ravi Anand <ravi.anand@qlogic.com>
Signed-off-by: David Somayajulu <david.somayajulu@qlogic.com>
Signed-off-by: Doug Maxey <dwm@bubba.enoyolf.org>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
---
diff --git a/drivers/scsi/Kconfig b/drivers/scsi/Kconfig
index 96a81cd..8ff3e14 100644
--- a/drivers/scsi/Kconfig
+++ b/drivers/scsi/Kconfig
@@ -1352,6 +1352,7 @@ config SCSI_QLOGICPTI
module will be called qlogicpti.
source "drivers/scsi/qla2xxx/Kconfig"
+source "drivers/scsi/qla4xxx/Kconfig"
config SCSI_LPFC
tristate "Emulex LightPulse Fibre Channel Support"
diff --git a/drivers/scsi/Makefile b/drivers/scsi/Makefile
index ebd0cf0..ac1900a 100644
--- a/drivers/scsi/Makefile
+++ b/drivers/scsi/Makefile
@@ -81,6 +81,7 @@ obj-$(CONFIG_SCSI_QLOGIC_FAS) += qlogicf
obj-$(CONFIG_PCMCIA_QLOGIC) += qlogicfas408.o
obj-$(CONFIG_SCSI_QLOGIC_1280) += qla1280.o
obj-$(CONFIG_SCSI_QLA_FC) += qla2xxx/
+obj-$(CONFIG_SCSI_QLA_ISCSI) += qla4xxx/
obj-$(CONFIG_SCSI_LPFC) += lpfc/
obj-$(CONFIG_SCSI_PAS16) += pas16.o
obj-$(CONFIG_SCSI_SEAGATE) += seagate.o
diff --git a/drivers/scsi/qla4xxx/Kconfig b/drivers/scsi/qla4xxx/Kconfig
new file mode 100644
index 0000000..6492798
--- /dev/null
+++ b/drivers/scsi/qla4xxx/Kconfig
@@ -0,0 +1,5 @@
+config SCSI_QLA_ISCSI
+ tristate "QLogic ISP4XXX host adapter family support"
+ depends on PCI && SCSI
+ ---help---
+ This driver supports the QLogic 40xx (ISP4XXX) host adapter family.
diff --git a/drivers/scsi/qla4xxx/Makefile b/drivers/scsi/qla4xxx/Makefile
new file mode 100644
index 0000000..86ea37b
--- /dev/null
+++ b/drivers/scsi/qla4xxx/Makefile
@@ -0,0 +1,5 @@
+qla4xxx-y := ql4_os.o ql4_init.o ql4_mbx.o ql4_iocb.o ql4_isr.o \
+ ql4_nvram.o ql4_dbg.o
+
+obj-$(CONFIG_SCSI_QLA_ISCSI) += qla4xxx.o
+
diff --git a/drivers/scsi/qla4xxx/ql4_os.c b/drivers/scsi/qla4xxx/ql4_os.c
new file mode 100644
index 0000000..27bc7f6
--- /dev/null
+++ b/drivers/scsi/qla4xxx/ql4_os.c
@@ -0,0 +1,2006 @@
+/*
+ * QLogic iSCSI HBA Driver
+ * Copyright (c) 2003-2006 QLogic Corporation
+ *
+ * See LICENSE.qla4xxx for copyright and licensing details.
+ */
+#include <linux/moduleparam.h>
+
+#include <scsi/scsi_tcq.h>
+#include <scsi/scsicam.h>
+
+#include "ql4_def.h"
+
+/*
+ * Driver version
+ */
+char qla4xxx_version_str[40];
+
+/*
+ * SRB allocation cache
+ */
+static kmem_cache_t *srb_cachep;
+
+/*
+ * Module parameter information and variables
+ */
+int ql4xdiscoverywait = 60;
+module_param(ql4xdiscoverywait, int, S_IRUGO | S_IRUSR);
+MODULE_PARM_DESC(ql4xdiscoverywait, "Discovery wait time");
+int ql4xdontresethba = 0;
+module_param(ql4xdontresethba, int, S_IRUGO | S_IRUSR);
+MODULE_PARM_DESC(ql4xdontresethba,
+ "Dont reset the HBA when the driver gets 0x8002 AEN "
+ " default it will reset hba :0"
+ " set to 1 to avoid resetting HBA");
+
+int extended_error_logging = 0; /* 0 = off, 1 = log errors */
+module_param(extended_error_logging, int, S_IRUGO | S_IRUSR);
+MODULE_PARM_DESC(extended_error_logging,
+ "Option to enable extended error logging, "
+ "Default is 0 - no logging, 1 - debug logging");
+
+/*
+ * SCSI host template entry points
+ */
+
+static int qla4xxx_mem_alloc(struct scsi_qla_host *ha);
+static void qla4xxx_mem_free(struct scsi_qla_host *ha);
+static void qla4xxx_timer(struct scsi_qla_host *ha);
+static void qla4xxx_do_dpc(void *data);
+static void qla4xxx_flush_active_srbs(struct scsi_qla_host *ha);
+int qla4xxx_reset_target(struct scsi_qla_host *ha,
+ struct ddb_entry * ddb_entry);
+int qla4xxx_recover_adapter(struct scsi_qla_host *ha, uint8_t renew_ddb_list);
+void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha);
+
+static int qla4xxx_iospace_config(struct scsi_qla_host *ha);
+static void qla4xxx_free_adapter(struct scsi_qla_host *ha);
+
+/*
+ * iSCSI template entry points
+ */
+static int qla4xxx_tgt_dscvr(enum iscsi_tgt_dscvr type, uint32_t host_no,
+ uint32_t enable, struct sockaddr *dst_addr);
+static int qla4xxx_conn_get_param(struct iscsi_cls_conn *conn,
+ enum iscsi_param param, char *buf);
+static int qla4xxx_sess_get_param(struct iscsi_cls_session *sess,
+ enum iscsi_param param, char *buf);
+static void qla4xxx_conn_stop(struct iscsi_cls_conn *conn, int flag);
+static int qla4xxx_conn_start(struct iscsi_cls_conn *conn);
+static void qla4xxx_recovery_timedout(struct iscsi_cls_session *session);
+
+/*
+ * SCSI host template entry points
+ */
+static int qla4xxx_queuecommand(struct scsi_cmnd *cmd,
+ void (*done) (struct scsi_cmnd *));
+static int qla4xxx_eh_abort(struct scsi_cmnd *cmd);
+static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd);
+static int qla4xxx_eh_bus_reset(struct scsi_cmnd *cmd);
+static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd);
+static int qla4xxx_slave_alloc(struct scsi_device *device);
+static int qla4xxx_slave_configure(struct scsi_device *device);
+
+static struct scsi_host_template qla4xxx_driver_template = {
+ .module = THIS_MODULE,
+ .name = DRIVER_NAME,
+ .proc_name = DRIVER_NAME,
+ .queuecommand = qla4xxx_queuecommand,
+
+ .eh_abort_handler = qla4xxx_eh_abort,
+ .eh_device_reset_handler = qla4xxx_eh_device_reset,
+ .eh_bus_reset_handler = qla4xxx_eh_bus_reset,
+ .eh_host_reset_handler = qla4xxx_eh_host_reset,
+
+ .slave_configure = qla4xxx_slave_configure,
+ .slave_alloc = qla4xxx_slave_alloc,
+
+ .this_id = -1,
+ .cmd_per_lun = 3,
+ .use_clustering = ENABLE_CLUSTERING,
+ .sg_tablesize = SG_ALL,
+
+ .max_sectors = 0xFFFF,
+};
+
+static struct iscsi_transport qla4xxx_iscsi_transport = {
+ .owner = THIS_MODULE,
+ .name = DRIVER_NAME,
+ .param_mask = ISCSI_CONN_PORT |
+ ISCSI_CONN_ADDRESS |
+ ISCSI_TARGET_NAME |
+ ISCSI_TPGT,
+ .sessiondata_size = sizeof(struct ddb_entry),
+ .host_template = &qla4xxx_driver_template,
+
+ .tgt_dscvr = qla4xxx_tgt_dscvr,
+ .get_conn_param = qla4xxx_conn_get_param,
+ .get_session_param = qla4xxx_sess_get_param,
+ .start_conn = qla4xxx_conn_start,
+ .stop_conn = qla4xxx_conn_stop,
+ .session_recovery_timedout = qla4xxx_recovery_timedout,
+};
+
+static struct scsi_transport_template *qla4xxx_scsi_transport;
+
+static void qla4xxx_recovery_timedout(struct iscsi_cls_session *session)
+{
+ struct ddb_entry *ddb_entry = session->dd_data;
+ struct scsi_qla_host *ha = ddb_entry->ha;
+
+ DEBUG2(printk("scsi%ld: %s: index [%d] port down retry count of (%d) "
+ "secs exhausted, marking device DEAD.\n", ha->host_no,
+ __func__, ddb_entry->fw_ddb_index,
+ ha->port_down_retry_count));
+
+ atomic_set(&ddb_entry->state, DDB_STATE_DEAD);
+
+ DEBUG2(printk("scsi%ld: %s: scheduling dpc routine - dpc flags = "
+ "0x%lx\n", ha->host_no, __func__, ha->dpc_flags));
+ queue_work(ha->dpc_thread, &ha->dpc_work);
+}
+
+static int qla4xxx_conn_start(struct iscsi_cls_conn *conn)
+{
+ struct iscsi_cls_session *session;
+ struct ddb_entry *ddb_entry;
+
+ session = iscsi_dev_to_session(conn->dev.parent);
+ ddb_entry = session->dd_data;
+
+ DEBUG2(printk("scsi%ld: %s: index [%d] starting conn\n",
+ ddb_entry->ha->host_no, __func__,
+ ddb_entry->fw_ddb_index));
+ iscsi_unblock_session(session);
+ return 0;
+}
+
+static void qla4xxx_conn_stop(struct iscsi_cls_conn *conn, int flag)
+{
+ struct iscsi_cls_session *session;
+ struct ddb_entry *ddb_entry;
+
+ session = iscsi_dev_to_session(conn->dev.parent);
+ ddb_entry = session->dd_data;
+
+ DEBUG2(printk("scsi%ld: %s: index [%d] stopping conn\n",
+ ddb_entry->ha->host_no, __func__,
+ ddb_entry->fw_ddb_index));
+ if (flag == STOP_CONN_RECOVER)
+ iscsi_block_session(session);
+ else
+ printk(KERN_ERR "iscsi: invalid stop flag %d\n", flag);
+}
+
+static int qla4xxx_sess_get_param(struct iscsi_cls_session *sess,
+ enum iscsi_param param, char *buf)
+{
+ struct ddb_entry *ddb_entry = sess->dd_data;
+ int len;
+
+ switch (param) {
+ case ISCSI_PARAM_TARGET_NAME:
+ len = snprintf(buf, PAGE_SIZE - 1, "%s\n",
+ ddb_entry->iscsi_name);
+ break;
+ case ISCSI_PARAM_TPGT:
+ len = sprintf(buf, "%u\n", ddb_entry->tpgt);
+ break;
+ default:
+ return -ENOSYS;
+ }
+
+ return len;
+}
+
+static int qla4xxx_conn_get_param(struct iscsi_cls_conn *conn,
+ enum iscsi_param param, char *buf)
+{
+ struct iscsi_cls_session *session;
+ struct ddb_entry *ddb_entry;
+ int len;
+
+ session = iscsi_dev_to_session(conn->dev.parent);
+ ddb_entry = session->dd_data;
+
+ switch (param) {
+ case ISCSI_PARAM_CONN_PORT:
+ len = sprintf(buf, "%hu\n", ddb_entry->port);
+ break;
+ case ISCSI_PARAM_CONN_ADDRESS:
+ /* TODO: what are the ipv6 bits */
+ len = sprintf(buf, "%u.%u.%u.%u\n",
+ NIPQUAD(ddb_entry->ip_addr));
+ break;
+ default:
+ return -ENOSYS;
+ }
+
+ return len;
+}
+
+static int qla4xxx_tgt_dscvr(enum iscsi_tgt_dscvr type, uint32_t host_no,
+ uint32_t enable, struct sockaddr *dst_addr)
+{
+ struct scsi_qla_host *ha;
+ struct Scsi_Host *shost;
+ struct sockaddr_in *addr;
+ struct sockaddr_in6 *addr6;
+ int ret = 0;
+
+ shost = scsi_host_lookup(host_no);
+ if (IS_ERR(shost)) {
+ printk(KERN_ERR "Could not find host no %u\n", host_no);
+ return -ENODEV;
+ }
+
+ ha = (struct scsi_qla_host *) shost->hostdata;
+
+ switch (type) {
+ case ISCSI_TGT_DSCVR_SEND_TARGETS:
+ if (dst_addr->sa_family == AF_INET) {
+ addr = (struct sockaddr_in *)dst_addr;
+ if (qla4xxx_send_tgts(ha, (char *)&addr->sin_addr,
+ addr->sin_port) != QLA_SUCCESS)
+ ret = -EIO;
+ } else if (dst_addr->sa_family == AF_INET6) {
+ /*
+ * TODO: fix qla4xxx_send_tgts
+ */
+ addr6 = (struct sockaddr_in6 *)dst_addr;
+ if (qla4xxx_send_tgts(ha, (char *)&addr6->sin6_addr,
+ addr6->sin6_port) != QLA_SUCCESS)
+ ret = -EIO;
+ } else
+ ret = -ENOSYS;
+ break;
+ default:
+ ret = -ENOSYS;
+ }
+
+ scsi_host_put(shost);
+ return ret;
+}
+
+void qla4xxx_destroy_sess(struct ddb_entry *ddb_entry)
+{
+ if (!ddb_entry->sess)
+ return;
+
+ if (ddb_entry->conn) {
+ iscsi_if_destroy_session_done(ddb_entry->conn);
+ iscsi_destroy_conn(ddb_entry->conn);
+ iscsi_remove_session(ddb_entry->sess);
+ }
+ iscsi_free_session(ddb_entry->sess);
+}
+
+int qla4xxx_add_sess(struct ddb_entry *ddb_entry)
+{
+ int err;
+
+ err = iscsi_add_session(ddb_entry->sess, ddb_entry->fw_ddb_index);
+ if (err) {
+ DEBUG2(printk(KERN_ERR "Could not add session.\n"));
+ return err;
+ }
+
+ ddb_entry->conn = iscsi_create_conn(ddb_entry->sess, 0);
+ if (!ddb_entry->conn) {
+ iscsi_remove_session(ddb_entry->sess);
+ DEBUG2(printk(KERN_ERR "Could not add connection.\n"));
+ return -ENOMEM;
+ }
+
+ ddb_entry->sess->recovery_tmo = ddb_entry->ha->port_down_retry_count;
+ iscsi_if_create_session_done(ddb_entry->conn);
+ return 0;
+}
+
+struct ddb_entry *qla4xxx_alloc_sess(struct scsi_qla_host *ha)
+{
+ struct ddb_entry *ddb_entry;
+ struct iscsi_cls_session *sess;
+
+ sess = iscsi_alloc_session(ha->host, &qla4xxx_iscsi_transport);
+ if (!sess)
+ return NULL;
+
+ ddb_entry = sess->dd_data;
+ memset(ddb_entry, 0, sizeof(*ddb_entry));
+ ddb_entry->ha = ha;
+ ddb_entry->sess = sess;
+ return ddb_entry;
+}
+
+/*
+ * Timer routines
+ */
+
+static void qla4xxx_start_timer(struct scsi_qla_host *ha, void *func,
+ unsigned long interval)
+{
+ DEBUG(printk("scsi: %s: Starting timer thread for adapter %d\n",
+ __func__, ha->host->host_no));
+ init_timer(&ha->timer);
+ ha->timer.expires = jiffies + interval * HZ;
+ ha->timer.data = (unsigned long)ha;
+ ha->timer.function = (void (*)(unsigned long))func;
+ add_timer(&ha->timer);
+ ha->timer_active = 1;
+}
+
+static void qla4xxx_stop_timer(struct scsi_qla_host *ha)
+{
+ del_timer_sync(&ha->timer);
+ ha->timer_active = 0;
+}
+
+/**************************************************************************
+ * qla4xxx_mark_device_missing
+ * This routine marks a device missing and resets the relogin retry count.
+ *
+ * Input:
+ * ha - Pointer to host adapter structure.
+ * ddb_entry - Pointer to device database entry
+ *
+ * Returns:
+ * None
+ *
+ **************************************************************************/
+void qla4xxx_mark_device_missing(struct scsi_qla_host *ha,
+ struct ddb_entry *ddb_entry)
+{
+ atomic_set(&ddb_entry->state, DDB_STATE_MISSING);
+ DEBUG3(printk("scsi%d:%d:%d: index [%d] marked MISSING\n",
+ ha->host_no, ddb_entry->bus, ddb_entry->target,
+ ddb_entry->fw_ddb_index));
+ iscsi_conn_error(ddb_entry->conn, ISCSI_ERR_CONN_FAILED);
+}
+
+static struct srb* qla4xxx_get_new_srb(struct scsi_qla_host *ha,
+ struct ddb_entry *ddb_entry,
+ struct scsi_cmnd *cmd,
+ void (*done)(struct scsi_cmnd *))
+{
+ struct srb *srb;
+
+ srb = mempool_alloc(ha->srb_mempool, GFP_ATOMIC);
+ if (!srb)
+ return srb;
+
+ atomic_set(&srb->ref_count, 1);
+ srb->ha = ha;
+ srb->ddb = ddb_entry;
+ srb->cmd = cmd;
+ srb->flags = 0;
+ cmd->SCp.ptr = (void *)srb;
+ cmd->scsi_done = done;
+
+ return srb;
+}
+
+static void qla4xxx_srb_free_dma(struct scsi_qla_host *ha, struct srb *srb)
+{
+ struct scsi_cmnd *cmd = srb->cmd;
+
+ if (srb->flags & SRB_DMA_VALID) {
+ if (cmd->use_sg) {
+ dma_unmap_sg(&ha->pdev->dev, cmd->request_buffer,
+ cmd->use_sg, cmd->sc_data_direction);
+ } else if (cmd->request_bufflen) {
+ dma_unmap_single(&ha->pdev->dev, srb->dma_handle,
+ cmd->request_bufflen,
+ cmd->sc_data_direction);
+ }
+ srb->flags &= ~SRB_DMA_VALID;
+ }
+ cmd->SCp.ptr = NULL;
+}
+
+void qla4xxx_srb_compl(struct scsi_qla_host *ha, struct srb *srb)
+{
+ struct scsi_cmnd *cmd = srb->cmd;
+
+ qla4xxx_srb_free_dma(ha, srb);
+
+ mempool_free(srb, ha->srb_mempool);
+
+ cmd->scsi_done(cmd);
+}
+
+/**************************************************************************
+ * qla4xxx_queuecommand
+ * This routine is invoked by Linux to send a SCSI command to the driver.
+ *
+ * Input:
+ * cmd - Pointer to Linux's SCSI command structure
+ * done_fn - Function that the driver calls to notify the SCSI mid-layer
+ * that the command has been processed.
+ *
+ * Remarks:
+ * The mid-level driver tries to ensure that queuecommand never gets
+ * invoked concurrently with itself or the interrupt handler (although
+ * the interrupt handler may call this routine as part of request-
+ * completion handling). Unfortunely, it sometimes calls the scheduler
+ * in interrupt context which is a big NO! NO!.
+ *
+ * Returns:
+ * None
+ **************************************************************************/
+static int qla4xxx_queuecommand(struct scsi_cmnd *cmd,
+ void (*done)(struct scsi_cmnd *))
+{
+ struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
+ struct ddb_entry *ddb_entry = cmd->device->hostdata;
+ struct srb *srb;
+ int rval;
+
+ if (atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) {
+ if (atomic_read(&ddb_entry->state) == DDB_STATE_DEAD) {
+ cmd->result = DID_NO_CONNECT << 16;
+ goto qc_fail_command;
+ }
+ goto qc_host_busy;
+ }
+
+ spin_unlock_irq(ha->host->host_lock);
+
+ srb = qla4xxx_get_new_srb(ha, ddb_entry, cmd, done);
+ if (!srb)
+ goto qc_host_busy_lock;
+
+ rval = qla4xxx_send_command_to_isp(ha, srb);
+ if (rval != QLA_SUCCESS)
+ goto qc_host_busy_free_sp;
+
+ spin_lock_irq(ha->host->host_lock);
+ return 0;
+
+qc_host_busy_free_sp:
+ qla4xxx_srb_free_dma(ha, srb);
+ mempool_free(srb, ha->srb_mempool);
+
+qc_host_busy_lock:
+ spin_lock_irq(ha->host->host_lock);
+
+qc_host_busy:
+ return SCSI_MLQUEUE_HOST_BUSY;
+
+qc_fail_command:
+ done(cmd);
+
+ return 0;
+}
+
+/**************************************************************************
+ * qla4xxx_probe_adapter
+ * This routine will probe for Qlogic 4010 iSCSI host adapters.
+ * It returns the number of host adapters of a particular
+ * type that were found. It also initializes all data necessary for
+ * the driver. It is passed-in the host number, so that it
+ * knows where its first entry is in the scsi_hosts[] array.
+ *
+ * Input:
+ *
+ * Returns:
+ **************************************************************************/
+static int __devinit qla4xxx_probe_adapter(struct pci_dev *pdev,
+ const struct pci_device_id *ent)
+{
+ int ret = -ENODEV, status;
+ struct Scsi_Host *host;
+ struct scsi_qla_host *ha;
+ struct ddb_entry *ddb_entry, *ddbtemp;
+ uint8_t init_retry_count = 0;
+ char buf[34];
+
+ if (pci_enable_device(pdev))
+ return -1;
+
+ host = scsi_host_alloc(&qla4xxx_driver_template, sizeof(*ha));
+ if (host == NULL) {
+ printk(KERN_WARNING
+ "qla4xxx: Couldn't allocate host from scsi layer!\n");
+ goto probe_disable_device;
+ }
+
+ /* Clear our data area */
+ ha = (struct scsi_qla_host *) host->hostdata;
+ memset(ha, 0, sizeof(*ha));
+
+ /* Save the information from PCI BIOS. */
+ ha->pdev = pdev;
+ ha->host = host;
+ ha->host_no = host->host_no;
+
+ /* Configure PCI I/O space. */
+ ret = qla4xxx_iospace_config(ha);
+ if (ret)
+ goto probe_failed;
+
+ ql4_printk(KERN_INFO, ha, "Found an ISP%04x, irq %d, iobase 0x%p\n",
+ pdev->device, pdev->irq, ha->reg);
+
+ qla4xxx_config_dma_addressing(ha);
+
+ /* Initialize lists and spinlocks. */
+ INIT_LIST_HEAD(&ha->ddb_list);
+ INIT_LIST_HEAD(&ha->free_srb_q);
+
+ mutex_init(&ha->mbox_sem);
+ init_waitqueue_head(&ha->mailbox_wait_queue);
+
+ spin_lock_init(&ha->hardware_lock);
+ spin_lock_init(&ha->list_lock);
+
+ /* Allocate dma buffers */
+ if (qla4xxx_mem_alloc(ha)) {
+ ql4_printk(KERN_WARNING, ha,
+ "[ERROR] Failed to allocate memory for adapter\n");
+
+ ret = -ENOMEM;
+ goto probe_failed;
+ }
+
+ /*
+ * Initialize the Host adapter request/response queues and
+ * firmware
+ * NOTE: interrupts enabled upon successful completion
+ */
+ status = qla4xxx_initialize_adapter(ha, REBUILD_DDB_LIST);
+ while (status == QLA_ERROR && init_retry_count++ < MAX_INIT_RETRIES) {
+ DEBUG2(printk("scsi: %s: retrying adapter initialization "
+ "(%d)\n", __func__, init_retry_count));
+ qla4xxx_soft_reset(ha);
+ status = qla4xxx_initialize_adapter(ha, REBUILD_DDB_LIST);
+ }
+ if (status == QLA_ERROR) {
+ ql4_printk(KERN_WARNING, ha, "Failed to initialize adapter\n");
+
+ ret = -ENODEV;
+ goto probe_failed;
+ }
+
+ host->cmd_per_lun = 3;
+ host->max_channel = 0;
+ host->max_lun = MAX_LUNS - 1;
+ host->max_id = MAX_TARGETS;
+ host->max_cmd_len = IOCB_MAX_CDB_LEN;
+ host->can_queue = REQUEST_QUEUE_DEPTH + 128;
+ host->transportt = qla4xxx_scsi_transport;
+
+ /* Startup the kernel thread for this host adapter. */
+ DEBUG2(printk("scsi: %s: Starting kernel thread for "
+ "qla4xxx_dpc\n", __func__));
+ sprintf(buf, "qla4xxx_%lu_dpc", ha->host_no);
+ ha->dpc_thread = create_singlethread_workqueue(buf);
+ if (!ha->dpc_thread) {
+ ql4_printk(KERN_WARNING, ha, "Unable to start DPC thread!\n");
+ ret = -ENODEV;
+ goto probe_failed;
+ }
+ INIT_WORK(&ha->dpc_work, qla4xxx_do_dpc, ha);
+
+ ret = request_irq(pdev->irq, qla4xxx_intr_handler,
+ SA_INTERRUPT|SA_SHIRQ, "qla4xxx", ha);
+ if (ret) {
+ ql4_printk(KERN_WARNING, ha,
+ "Failed to reserve interrupt %d already in use.\n",
+ pdev->irq);
+ goto probe_failed;
+ }
+ set_bit(AF_IRQ_ATTACHED, &ha->flags);
+ host->irq = pdev->irq;
+ DEBUG(printk("scsi%d: irq %d attached\n", ha->host_no, ha->pdev->irq));
+
+ qla4xxx_enable_intrs(ha);
+
+ /* Start timer thread. */
+ qla4xxx_start_timer(ha, qla4xxx_timer, 1);
+
+ set_bit(AF_INIT_DONE, &ha->flags);
+
+ pci_set_drvdata(pdev, ha);
+
+ ret = scsi_add_host(host, &pdev->dev);
+ if (ret)
+ goto probe_failed;
+
+ /* Update transport device information for all devices. */
+ list_for_each_entry_safe(ddb_entry, ddbtemp, &ha->ddb_list, list) {
+ if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE)
+ if (qla4xxx_add_sess(ddb_entry))
+ goto remove_host;
+ }
+
+ printk(KERN_INFO
+ " QLogic iSCSI HBA Driver version: %s\n"
+ " QLogic ISP%04x @ %s, host#=%ld, fw=%02d.%02d.%02d.%02d\n",
+ qla4xxx_version_str, ha->pdev->device, pci_name(ha->pdev),
+ ha->host_no, ha->firmware_version[0], ha->firmware_version[1],
+ ha->patch_number, ha->build_number);
+
+ return 0;
+
+remove_host:
+ qla4xxx_free_ddb_list(ha);
+ scsi_remove_host(host);
+
+probe_failed:
+ qla4xxx_free_adapter(ha);
+ scsi_host_put(ha->host);
+
+probe_disable_device:
+ pci_disable_device(pdev);
+
+ return ret;
+}
+
+/**************************************************************************
+ * qla4xxx_remove_adapter
+ *
+ * Input:
+ * pci_dev - PCI device pointer
+ *
+ * Returns:
+ **************************************************************************/
+static void __devexit qla4xxx_remove_adapter(struct pci_dev *pdev)
+{
+ struct scsi_qla_host *ha;
+
+ ha = pci_get_drvdata(pdev);
+
+ /* remove devs from iscsi_sessions to scsi_devices */
+ qla4xxx_free_ddb_list(ha);
+
+ scsi_remove_host(ha->host);
+
+ qla4xxx_free_adapter(ha);
+
+ scsi_host_put(ha->host);
+
+ pci_set_drvdata(pdev, NULL);
+}
+
+/**************************************************************************
+ * qla4xxx_free_adapter
+ *
+ * Input:
+ * pci_dev - PCI device pointer
+ *
+ * Returns:
+ **************************************************************************/
+static void qla4xxx_free_adapter(struct scsi_qla_host *ha)
+{
+
+ if (test_bit(AF_INTERRUPTS_ON, &ha->flags)) {
+ /* Turn-off interrupts on the card. */
+ qla4xxx_disable_intrs(ha);
+ }
+
+ /* Kill the kernel thread for this host */
+ if (ha->dpc_thread)
+ destroy_workqueue(ha->dpc_thread);
+
+ /* Issue Soft Reset to put firmware in unknown state */
+ qla4xxx_soft_reset(ha);
+
+ /* Remove timer thread, if present */
+ if (ha->timer_active)
+ qla4xxx_stop_timer(ha);
+
+ /* free extra memory */
+ qla4xxx_mem_free(ha);
+
+ /* Detach interrupts */
+ if (test_and_clear_bit(AF_IRQ_ATTACHED, &ha->flags))
+ free_irq(ha->pdev->irq, ha);
+
+ pci_disable_device(ha->pdev);
+
+}
+
+/**************************************************************************
+ * qla4xxx_iospace_config
+ * This routine
+ *
+ * Input:
+ *
+ * Returns:
+ **************************************************************************/
+static int qla4xxx_iospace_config(struct scsi_qla_host *ha)
+{
+ unsigned long pio, pio_len, pio_flags;
+ unsigned long mmio, mmio_len, mmio_flags;
+
+ pio = pci_resource_start(ha->pdev, 0);
+ pio_len = pci_resource_len(ha->pdev, 0);
+ pio_flags = pci_resource_flags(ha->pdev, 0);
+ if (pio_flags & IORESOURCE_IO) {
+ if (pio_len < MIN_IOBASE_LEN) {
+ ql4_printk(KERN_WARNING, ha,
+ "Invalid PCI I/O region size (%s)...\n",
+ pci_name(ha->pdev));
+ pio = 0;
+ }
+ } else {
+ ql4_printk(KERN_WARNING, ha,
+ "region #0 not a PIO resource (%s)...\n",
+ pci_name(ha->pdev));
+ pio = 0;
+ }
+
+ /* Use MMIO operations for all accesses. */
+ mmio = pci_resource_start(ha->pdev, 1);
+ mmio_len = pci_resource_len(ha->pdev, 1);
+ mmio_flags = pci_resource_flags(ha->pdev, 1);
+
+ if (!(mmio_flags & IORESOURCE_MEM)) {
+ ql4_printk(KERN_ERR, ha,
+ "region #0 not an MMIO resource (%s), aborting\n",
+ pci_name(ha->pdev));
+ goto iospace_error_exit;
+ }
+ if (mmio_len < MIN_IOBASE_LEN) {
+ ql4_printk(KERN_ERR, ha,
+ "Invalid PCI mem region size (%s), aborting\n",
+ pci_name(ha->pdev));
+ goto iospace_error_exit;
+ }
+
+ if (pci_request_regions(ha->pdev, DRIVER_NAME)) {
+ ql4_printk(KERN_WARNING, ha,
+ "Failed to reserve PIO/MMIO regions (%s)\n",
+ pci_name(ha->pdev));
+
+ goto iospace_error_exit;
+ }
+
+ ha->pio_address = pio;
+ ha->pio_length = pio_len;
+ ha->reg = ioremap(mmio, MIN_IOBASE_LEN);
+ if (!ha->reg) {
+ ql4_printk(KERN_ERR, ha,
+ "cannot remap MMIO (%s), aborting\n",
+ pci_name(ha->pdev));
+
+ goto iospace_error_exit;
+ }
+
+ return 0;
+
+iospace_error_exit:
+ return -ENOMEM;
+}
+
+/**
+ * qla4xxx_config_dma_addressing() - Configure OS DMA addressing method.
+ * @ha: HA context
+ *
+ * At exit, the @ha's flags.enable_64bit_addressing set to indicated
+ * supported addressing method.
+ */
+void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha)
+{
+ int retval;
+
+ /* Update our PCI device dma_mask for full 64 bit mask */
+ if (pci_set_dma_mask(ha->pdev, DMA_64BIT_MASK) == 0) {
+ if (pci_set_consistent_dma_mask(ha->pdev, DMA_64BIT_MASK)) {
+ ql4_printk(KERN_DEBUG, ha,
+ "Failed to set 64 bit PCI consistent mask; "
+ "using 32 bit.\n");
+ retval = pci_set_consistent_dma_mask(ha->pdev,
+ DMA_32BIT_MASK);
+ }
+ } else
+ retval = pci_set_dma_mask(ha->pdev, DMA_32BIT_MASK);
+}
+
+/**************************************************************************
+ * qla4xxx_mem_alloc
+ * This routine allocates memory use by the adapter.
+ *
+ * Input:
+ * ha - Pointer to host adapter structure
+ *
+ * Returns:
+ * QLA_SUCCESS - Successfully allocated adapter memory
+ * QLA_ERROR - Failed to allocate adapter memory
+ *
+ **************************************************************************/
+static int qla4xxx_mem_alloc(struct scsi_qla_host *ha)
+{
+ unsigned long align;
+
+ /* Allocate contiguous block of DMA memory for queues. */
+ ha->queues_len = ((REQUEST_QUEUE_DEPTH * QUEUE_SIZE) +
+ (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE) +
+ sizeof(struct shadow_regs) +
+ MEM_ALIGN_VALUE +
+ (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
+ ha->queues = dma_alloc_coherent(&ha->pdev->dev, ha->queues_len,
+ &ha->queues_dma, GFP_KERNEL);
+ if (ha->queues == NULL) {
+ ql4_printk(KERN_WARNING, ha,
+ "Memory Allocation failed - queues.\n");
+
+ goto mem_alloc_error_exit;
+ }
+ memset(ha->queues, 0, ha->queues_len);
+
+ /*
+ * As per RISC alignment requirements -- the bus-address must be a
+ * multiple of the request-ring size (in bytes).
+ */
+ align = 0;
+ if ((unsigned long)ha->queues_dma & (MEM_ALIGN_VALUE - 1))
+ align = MEM_ALIGN_VALUE - ((unsigned long)ha->queues_dma &
+ (MEM_ALIGN_VALUE - 1));
+
+ /* Update request and response queue pointers. */
+ ha->request_dma = ha->queues_dma + align;
+ ha->request_ring = (struct queue_entry *) (ha->queues + align);
+ ha->response_dma = ha->queues_dma + align +
+ (REQUEST_QUEUE_DEPTH * QUEUE_SIZE);
+ ha->response_ring = (struct queue_entry *) (ha->queues + align +
+ (REQUEST_QUEUE_DEPTH *
+ QUEUE_SIZE));
+ ha->shadow_regs_dma = ha->queues_dma + align +
+ (REQUEST_QUEUE_DEPTH * QUEUE_SIZE) +
+ (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE);
+ ha->shadow_regs = (struct shadow_regs *) (ha->queues + align +
+ (REQUEST_QUEUE_DEPTH *
+ QUEUE_SIZE) +
+ (RESPONSE_QUEUE_DEPTH *
+ QUEUE_SIZE));
+
+ /* Allocate memory for srb pool. */
+ ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab,
+ mempool_free_slab, srb_cachep);
+ if (ha->srb_mempool == NULL) {
+ ql4_printk(KERN_WARNING, ha,
+ "Memory Allocation failed - SRB Pool.\n");
+
+ goto mem_alloc_error_exit;
+ }
+
+ return QLA_SUCCESS;
+
+mem_alloc_error_exit:
+ qla4xxx_mem_free(ha);
+ return QLA_ERROR;
+}
+
+/**************************************************************************
+ * qla4xxx_mem_free
+ * This routine frees adapter allocated memory
+ *
+ * Input:
+ * ha - Pointer to host adapter structure.
+ *
+ * Returns:
+ * None
+ **************************************************************************/
+static void qla4xxx_mem_free(struct scsi_qla_host *ha)
+{
+ if (ha->queues)
+ dma_free_coherent(&ha->pdev->dev, ha->queues_len, ha->queues,
+ ha->queues_dma);
+
+ ha->queues_len = 0;
+ ha->queues = NULL;
+ ha->queues_dma = 0;
+ ha->request_ring = NULL;
+ ha->request_dma = 0;
+ ha->response_ring = NULL;
+ ha->response_dma = 0;
+ ha->shadow_regs = NULL;
+ ha->shadow_regs_dma = 0;
+
+ /* Free srb pool. */
+ if (ha->srb_mempool)
+ mempool_destroy(ha->srb_mempool);
+
+ ha->srb_mempool = NULL;
+
+ /* release io space registers */
+ if (ha->reg)
+ iounmap(ha->reg);
+ pci_release_regions(ha->pdev);
+}
+
+static int qla4xxx_slave_alloc(struct scsi_device *sdev)
+{
+ struct iscsi_cls_session *sess = starget_to_session(sdev->sdev_target);
+ struct ddb_entry *ddb = sess->dd_data;
+
+ sdev->hostdata = ddb;
+ return 0;
+}
+
+static int qla4xxx_slave_configure(struct scsi_device *sdev)
+{
+ if (sdev->tagged_supported)
+ scsi_activate_tcq(sdev, 32);
+ else
+ scsi_deactivate_tcq(sdev, 32);
+
+ return 0;
+}
+
+/**************************************************************************
+ * del_from_active_array
+ * This routine removes and returns the srb at the specified index
+ *
+ * Input:
+ * ha - Pointer to host adapter structure.
+ * index - index into to the active_array
+ *
+ * Returns:
+ * Pointer to corresponding SCSI Request Block
+ **************************************************************************/
+struct srb * del_from_active_array(struct scsi_qla_host *ha, uint32_t index)
+{
+ struct srb *srb = NULL;
+
+ /* validate handle and remove from active array */
+ if (index >= MAX_SRBS)
+ return srb;
+
+ srb = ha->active_srb_array[index];
+ ha->active_srb_array[index] = NULL;
+ if (!srb)
+ return srb;
+
+ /* update counters */
+ if (srb->flags & SRB_DMA_VALID) {
+ ha->req_q_count += srb->iocb_cnt;
+ ha->iocb_cnt -= srb->iocb_cnt;
+ if (srb->cmd)
+ srb->cmd->host_scribble = NULL;
+ }
+ return srb;
+}
+
+/**************************************************************************
+ * qla4xxx_timer
+ * This routine is scheduled to be invoked every second to search for
+ * work to do.
+ *
+ * Input:
+ * p - Pointer to host adapter structure.
+ *
+ * Returns:
+ * None
+ **************************************************************************/
+void qla4xxx_timer(struct scsi_qla_host *ha)
+{
+ struct ddb_entry *ddb_entry, *dtemp;
+ int start_dpc = 0;
+
+ /* Search for relogin's to time-out and port down retry. */
+ list_for_each_entry_safe(ddb_entry, dtemp, &ha->ddb_list, list) {
+ /* Count down time between sending relogins */
+ if (adapter_up(ha) &&
+ !test_bit(DF_RELOGIN, &ddb_entry->flags) &&
+ atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) {
+ if (atomic_read(&ddb_entry->retry_relogin_timer) !=
+ INVALID_ENTRY) {
+ if (atomic_read(&ddb_entry->retry_relogin_timer)
+ == 0) {
+ atomic_set(&ddb_entry->
+ retry_relogin_timer,
+ INVALID_ENTRY);
+ set_bit(DPC_RELOGIN_DEVICE,
+ &ha->dpc_flags);
+ set_bit(DF_RELOGIN, &ddb_entry->flags);
+ DEBUG2(printk("scsi%ld: %s: index [%d]"
+ " login device\n",
+ ha->host_no, __func__,
+ ddb_entry->fw_ddb_index));
+ } else
+ atomic_dec(&ddb_entry->
+ retry_relogin_timer);
+ }
+ }
+
+ /* Wait for relogin to timeout */
+ if (atomic_read(&ddb_entry->relogin_timer) &&
+ (atomic_dec_and_test(&ddb_entry->relogin_timer) != 0)) {
+ /*
+ * If the relogin times out and the device is
+ * still NOT ONLINE then try and relogin again.
+ */
+ if (atomic_read(&ddb_entry->state) !=
+ DDB_STATE_ONLINE &&
+ ddb_entry->fw_ddb_device_state ==
+ DDB_DS_SESSION_FAILED) {
+ /* Reset retry relogin timer */
+ atomic_inc(&ddb_entry->relogin_retry_count);
+ DEBUG2(printk("scsi%ld: index[%d] relogin"
+ " timed out-retrying"
+ " relogin (%d)\n",
+ ha->host_no,
+ ddb_entry->fw_ddb_index,
+ atomic_read(&ddb_entry->
+ relogin_retry_count))
+ );
+ start_dpc++;
+ DEBUG(printk("scsi%ld:%d:%d: index [%d] "
+ "initate relogin after"
+ " %d seconds\n",
+ ha->host_no, ddb_entry->bus,
+ ddb_entry->target,
+ ddb_entry->fw_ddb_index,
+ ddb_entry->default_time2wait + 4)
+ );
+
+ atomic_set(&ddb_entry->retry_relogin_timer,
+ ddb_entry->default_time2wait + 4);
+ }
+ }
+ }
+
+ /* Check for heartbeat interval. */
+ if (ha->firmware_options & FWOPT_HEARTBEAT_ENABLE &&
+ ha->heartbeat_interval != 0) {
+ ha->seconds_since_last_heartbeat++;
+ if (ha->seconds_since_last_heartbeat >
+ ha->heartbeat_interval + 2)
+ set_bit(DPC_RESET_HA, &ha->dpc_flags);
+ }
+
+
+ /* Wakeup the dpc routine for this adapter, if needed. */
+ if ((start_dpc ||
+ test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
+ test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags) ||
+ test_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags) ||
+ test_bit(DPC_RESET_HA_DESTROY_DDB_LIST, &ha->dpc_flags) ||
+ test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
+ test_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags) ||
+ test_bit(DPC_AEN, &ha->dpc_flags)) &&
+ ha->dpc_thread) {
+ DEBUG2(printk("scsi%ld: %s: scheduling dpc routine"
+ " - dpc flags = 0x%lx\n",
+ ha->host_no, __func__, ha->dpc_flags));
+ queue_work(ha->dpc_thread, &ha->dpc_work);
+ }
+
+ /* Reschedule timer thread to call us back in one second */
+ mod_timer(&ha->timer, jiffies + HZ);
+
+ DEBUG2(ha->seconds_since_last_intr++);
+}
+
+
+/**************************************************************************
+ * qla4xxx_do_dpc
+ * This routine is a task that is schedule by the interrupt handler
+ * to perform the background processing for interrupts. We put it
+ * on a task queue that is consumed whenever the scheduler runs; that's
+ * so you can do anything (i.e. put the process to sleep etc). In fact,
+ * the mid-level tries to sleep when it reaches the driver threshold
+ * "host->can_queue". This can cause a panic if we were in our interrupt
+ * code.
+ *
+ * Input:
+ * p - Pointer to host adapter structure.
+ *
+ * Returns:
+ * None
+ **************************************************************************/
+static void qla4xxx_do_dpc(void *data)
+{
+ struct scsi_qla_host *ha = (struct scsi_qla_host *) data;
+ struct ddb_entry *ddb_entry, *dtemp;
+
+ DEBUG2(printk("scsi%ld: %s: DPC handler waking up.\n",
+ ha->host_no, __func__));
+
+ DEBUG2(printk("scsi%ld: %s: ha->flags = 0x%08lx\n",
+ ha->host_no, __func__, ha->flags));
+ DEBUG2(printk("scsi%ld: %s: ha->dpc_flags = 0x%08lx\n",
+ ha->host_no, __func__, ha->dpc_flags));
+
+ /* Initialization not yet finished. Don't do anything yet. */
+ if (!test_bit(AF_INIT_DONE, &ha->flags))
+ return;
+
+ if (adapter_up(ha) ||
+ test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
+ test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
+ test_bit(DPC_RESET_HA_DESTROY_DDB_LIST, &ha->dpc_flags)) {
+ if (test_bit(DPC_RESET_HA_DESTROY_DDB_LIST, &ha->dpc_flags))
+ /*
+ * dg 09/23 Never initialize ddb list
+ * once we up and running
+ * qla4xxx_recover_adapter(ha,
+ * REBUILD_DDB_LIST);
+ */
+ qla4xxx_recover_adapter(ha, PRESERVE_DDB_LIST);
+
+ if (test_bit(DPC_RESET_HA, &ha->dpc_flags))
+ qla4xxx_recover_adapter(ha, PRESERVE_DDB_LIST);
+
+ if (test_and_clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
+ uint8_t wait_time = RESET_INTR_TOV;
+ unsigned long flags = 0;
+
+ qla4xxx_flush_active_srbs(ha);
+
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ while ((readw(&ha->reg->ctrl_status) &
+ (CSR_SOFT_RESET | CSR_FORCE_SOFT_RESET)) != 0) {
+ if (--wait_time == 0)
+ break;
+
+ spin_unlock_irqrestore(&ha->hardware_lock,
+ flags);
+
+ msleep(1000);
+
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ }
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+ if (wait_time == 0)
+ DEBUG2(printk("scsi%ld: %s: SR|FSR "
+ "bit not cleared-- resetting\n",
+ ha->host_no, __func__));
+ }
+ }
+
+ /* ---- process AEN? --- */
+ if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags))
+ qla4xxx_process_aen(ha, PROCESS_ALL_AENS);
+
+ /* ---- Get DHCP IP Address? --- */
+ if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags))
+ qla4xxx_get_dhcp_ip_address(ha);
+
+ /* ---- relogin device? --- */
+ if (adapter_up(ha) &&
+ test_and_clear_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags)) {
+ list_for_each_entry_safe(ddb_entry, dtemp,
+ &ha->ddb_list, list) {
+ if (test_and_clear_bit(DF_RELOGIN, &ddb_entry->flags) &&
+ atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE)
+ qla4xxx_relogin_device(ha, ddb_entry);
+
+ /*
+ * If mbx cmd times out there is no point
+ * in continuing further.
+ * With large no of targets this can hang
+ * the system.
+ */
+ if (test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
+ printk(KERN_WARNING "scsi%ld: %s: "
+ "need to reset hba\n",
+ ha->host_no, __func__);
+ break;
+ }
+ }
+ }
+}
+
+/**************************************************************************
+ * qla4010_soft_reset
+ * This routine performs a SOFT RESET.
+ *
+ * Input:
+ * ha - Pointer to host adapter structure.
+ *
+ * Returns:
+ * QLA_SUCCESS - Successfully reset the firmware
+ * QLA_ERROR - Failed to reset the firmware
+ **************************************************************************/
+int qla4010_soft_reset(struct scsi_qla_host *ha)
+{
+ uint32_t max_wait_time;
+ unsigned long flags = 0;
+ int status = QLA_ERROR;
+ uint32_t ctrl_status;
+
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+
+ /*
+ * If the SCSI Reset Interrupt bit is set, clear it.
+ * Otherwise, the Soft Reset won't work.
+ */
+ ctrl_status = readw(&ha->reg->ctrl_status);
+ if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0)
+ writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status);
+
+ /* Issue Soft Reset */
+ writel(set_rmask(CSR_SOFT_RESET), &ha->reg->ctrl_status);
+ readl(&ha->reg->ctrl_status);
+
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+ /* Wait until the Network Reset Intr bit is cleared */
+ max_wait_time = RESET_INTR_TOV;
+ do {
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ ctrl_status = readw(&ha->reg->ctrl_status);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+ if ((ctrl_status & CSR_NET_RESET_INTR) == 0)
+ break;
+
+ msleep(1000);
+ } while ((--max_wait_time));
+
+ if ((ctrl_status & CSR_NET_RESET_INTR) != 0) {
+ DEBUG2(printk(KERN_WARNING
+ "scsi%ld: Network Reset Intr not cleared by "
+ "Network function, clearing it now!\n",
+ ha->host_no));
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ writel(set_rmask(CSR_NET_RESET_INTR), &ha->reg->ctrl_status);
+ readl(&ha->reg->ctrl_status);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+ }
+
+ /* Wait until the firmware tells us the Soft Reset is done */
+ max_wait_time = SOFT_RESET_TOV;
+ do {
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ ctrl_status = readw(&ha->reg->ctrl_status);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+ if ((ctrl_status & CSR_SOFT_RESET) == 0) {
+ status = QLA_SUCCESS;
+ break;
+ }
+
+ msleep(1000);
+ } while ((--max_wait_time));
+
+ /*
+ * Also, make sure that the SCSI Reset Interrupt bit has been cleared
+ * after the soft reset has taken place.
+ */
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ ctrl_status = readw(&ha->reg->ctrl_status);
+ if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0) {
+ writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status);
+ readl(&ha->reg->ctrl_status);
+ }
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+ /* If soft reset fails then most probably the bios on other
+ * function is also enabled.
+ * Since the initialization is sequential the other fn
+ * wont be able to acknowledge the soft reset.
+ * Issue a force soft reset to workaround this scenario.
+ */
+ if (max_wait_time == 0) {
+ /* Issue Force Soft Reset */
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ writel(set_rmask(CSR_FORCE_SOFT_RESET), &ha->reg->ctrl_status);
+ readl(&ha->reg->ctrl_status);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+ /* Wait until the firmware tells us the Soft Reset is done */
+ max_wait_time = SOFT_RESET_TOV;
+ do {
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ ctrl_status = readw(&ha->reg->ctrl_status);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+ if ((ctrl_status & CSR_FORCE_SOFT_RESET) == 0) {
+ status = QLA_SUCCESS;
+ break;
+ }
+
+ msleep(1000);
+ } while ((--max_wait_time));
+ }
+
+ return status;
+}
+
+/**************************************************************************
+ * qla4xxx_topcat_reset
+ * This routine performs a HARD RESET of the TopCat chip.
+ *
+ * Input:
+ * ha - Pointer to host adapter structure.
+ *
+ * Returns:
+ * QLA_SUCCESS - Successfully reset the firmware
+ * QLA_ERROR - Failed to reset the firmware
+ **************************************************************************/
+int qla4xxx_topcat_reset(struct scsi_qla_host *ha)
+{
+ unsigned long flags;
+
+ ql4xxx_lock_nvram(ha);
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ writel(set_rmask(GPOR_TOPCAT_RESET), isp_gp_out(ha));
+ readl(isp_gp_out(ha));
+ mdelay(1);
+
+ writel(clr_rmask(GPOR_TOPCAT_RESET), isp_gp_out(ha));
+ readl(isp_gp_out(ha));
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+ mdelay(2523);
+
+ ql4xxx_unlock_nvram(ha);
+ return QLA_SUCCESS;
+}
+
+/**************************************************************************
+ * qla4xxx_soft_reset
+ * This routine performs a SOFT RESET.
+ *
+ * Input:
+ * ha - Pointer to host adapter structure.
+ *
+ * Returns:
+ * QLA_SUCCESS - Successfully reset the firmware
+ * QLA_ERROR - Failed to reset the firmware
+ **************************************************************************/
+int qla4xxx_soft_reset(struct scsi_qla_host *ha)
+{
+
+ DEBUG2(printk(KERN_WARNING "scsi%ld: %s: chip reset!\n", ha->host_no,
+ __func__));
+ if (test_bit(AF_TOPCAT_CHIP_PRESENT, &ha->flags)) {
+ int status = QLA_ERROR;
+
+ if ((qla4010_soft_reset(ha) == QLA_SUCCESS) &&
+ (qla4xxx_topcat_reset(ha) == QLA_SUCCESS) &&
+ (qla4010_soft_reset(ha) == QLA_SUCCESS) )
+ status = QLA_SUCCESS;
+ return status;
+ } else
+ return qla4010_soft_reset(ha);
+}
+
+/**************************************************************************
+ * qla4xxx_hard_reset
+ * This routine performs a HARD RESET.
+ *
+ * Input:
+ * ha - Pointer to host adapter structure.
+ *
+ * Returns:
+ * QLA_SUCCESS - Successfully reset the firmware
+ * QLA_ERROR - Failed to reset the firmware
+ **************************************************************************/
+int qla4xxx_hard_reset(struct scsi_qla_host *ha)
+{
+ /* The QLA4010 really doesn't have an equivalent to a hard reset */
+ qla4xxx_flush_active_srbs(ha);
+ if (test_bit(AF_TOPCAT_CHIP_PRESENT, &ha->flags)) {
+ int status = QLA_ERROR;
+
+ if ((qla4010_soft_reset(ha) == QLA_SUCCESS) &&
+ (qla4xxx_topcat_reset(ha) == QLA_SUCCESS) &&
+ (qla4010_soft_reset(ha) == QLA_SUCCESS))
+ status = QLA_SUCCESS;
+ return status;
+ } else
+ return qla4010_soft_reset(ha);
+}
+
+/**************************************************************************
+ * qla4xxx_cmd_wait
+ * This routine stalls the driver until all outstanding commands are
+ * returned.
+ *
+ * Input:
+ * ha - Pointer to host adapter structure.
+ *
+ * Remarks:
+ * Caller must release the Hardware Lock prior to calling this routine.
+ *
+ * Returns:
+ * QLA_SUCCESS - All outstanding commands completed
+ * QLA_ERROR - All outstanding commands did not complete
+ **************************************************************************/
+static int qla4xxx_cmd_wait(struct scsi_qla_host *ha)
+{
+ uint32_t index = 0;
+ int stat = QLA_SUCCESS;
+ unsigned long flags;
+ int wait_cnt = WAIT_CMD_TOV; /*
+ * Initialized for 30 seconds as we
+ * expect all commands to retuned
+ * ASAP.
+ */
+
+ while (wait_cnt) {
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ /* Find a command that hasn't completed. */
+ for (index = 1; index < MAX_SRBS; index++) {
+ if (ha->active_srb_array[index] != NULL)
+ break;
+ }
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+ /* If No Commands are pending, wait is complete */
+ if (index == MAX_SRBS) {
+ break;
+ }
+
+ /* If we timed out on waiting for commands to come back
+ * return ERROR.
+ */
+ wait_cnt--;
+ if (wait_cnt == 0)
+ stat = QLA_ERROR;
+ else {
+ msleep(1000);
+ }
+ } /* End of While (wait_cnt) */
+
+ return stat;
+}
+
+/**************************************************************************
+ * qla4xxx_recover_adapter
+ * This routine recovers that adapter from a fatal state.
+ *
+ * Input:
+ * ha - Pointer to host adapter structure.
+ * renew_ddb_list - Indicates what to do with the adapter's ddb list
+ * after adapter recovery has completed.
+ * 0=preserve ddb list, 1=destroy and rebuild ddb list
+ *
+ * Returns:
+ * QLA_SUCCESS - Successfully recovered adapter
+ * QLA_ERROR - Failed to recover adapter
+ **************************************************************************/
+int qla4xxx_recover_adapter(struct scsi_qla_host *ha, uint8_t renew_ddb_list)
+{
+ int status;
+
+ /* Stall incoming I/O until we are done */
+ clear_bit(AF_ONLINE, &ha->flags);
+ DEBUG2(printk("scsi%ld: %s calling qla4xxx_cmd_wait\n", ha->host_no,
+ __func__));
+
+ /* Wait for outstanding commands to complete.
+ * Stalls the driver for max 30 secs
+ */
+ status = qla4xxx_cmd_wait(ha);
+
+ qla4xxx_disable_intrs(ha);
+
+ /* Flush any pending ddb changed AENs */
+ qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
+
+ /* Reset the firmware. If successful, function
+ * returns with ISP interrupts enabled.
+ */
+ if (status == QLA_SUCCESS) {
+ DEBUG2(printk("scsi%ld: %s - Performing soft reset..\n",
+ ha->host_no, __func__));
+ status = qla4xxx_soft_reset(ha);
+ }
+ /* FIXMEkaren: Do we want to keep interrupts enabled and process
+ AENs after soft reset */
+
+ /* If firmware (SOFT) reset failed, or if all outstanding
+ * commands have not returned, then do a HARD reset.
+ */
+ if (status == QLA_ERROR) {
+ DEBUG2(printk("scsi%ld: %s - Performing hard reset..\n",
+ ha->host_no, __func__));
+ status = qla4xxx_hard_reset(ha);
+ }
+
+ /* Flush any pending ddb changed AENs */
+ qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
+
+ /* Re-initialize firmware. If successful, function returns
+ * with ISP interrupts enabled */
+ if (status == QLA_SUCCESS) {
+ DEBUG2(printk("scsi%ld: %s - Initializing adapter..\n",
+ ha->host_no, __func__));
+
+ /* If successful, AF_ONLINE flag set in
+ * qla4xxx_initialize_adapter */
+ status = qla4xxx_initialize_adapter(ha, renew_ddb_list);
+ }
+
+ /* Failed adapter initialization?
+ * Retry reset_ha only if invoked via DPC (DPC_RESET_HA) */
+ if ((test_bit(AF_ONLINE, &ha->flags) == 0) &&
+ (test_bit(DPC_RESET_HA, &ha->dpc_flags))) {
+ /* Adapter initialization failed, see if we can retry
+ * resetting the ha */
+ if (!test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags)) {
+ ha->retry_reset_ha_cnt = MAX_RESET_HA_RETRIES;
+ DEBUG2(printk("scsi%ld: recover adapter - retrying "
+ "(%d) more times\n", ha->host_no,
+ ha->retry_reset_ha_cnt));
+ set_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
+ status = QLA_ERROR;
+ } else {
+ if (ha->retry_reset_ha_cnt > 0) {
+ /* Schedule another Reset HA--DPC will retry */
+ ha->retry_reset_ha_cnt--;
+ DEBUG2(printk("scsi%ld: recover adapter - "
+ "retry remaining %d\n",
+ ha->host_no,
+ ha->retry_reset_ha_cnt));
+ status = QLA_ERROR;
+ }
+
+ if (ha->retry_reset_ha_cnt == 0) {
+ /* Recover adapter retries have been exhausted.
+ * Adapter DEAD */
+ DEBUG2(printk("scsi%ld: recover adapter "
+ "failed - board disabled\n",
+ ha->host_no));
+ qla4xxx_flush_active_srbs(ha);
+ clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
+ clear_bit(DPC_RESET_HA, &ha->dpc_flags);
+ clear_bit(DPC_RESET_HA_DESTROY_DDB_LIST,
+ &ha->dpc_flags);
+ status = QLA_ERROR;
+ }
+ }
+ } else {
+ clear_bit(DPC_RESET_HA, &ha->dpc_flags);
+ clear_bit(DPC_RESET_HA_DESTROY_DDB_LIST, &ha->dpc_flags);
+ clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
+ }
+
+ ha->adapter_error_count++;
+
+ if (status == QLA_SUCCESS)
+ qla4xxx_enable_intrs(ha);
+
+ DEBUG2(printk("scsi%ld: recover adapter .. DONE\n", ha->host_no));
+ return status;
+}
+
+
+/**************************************************************************
+ * qla4xxx_eh_wait_on_command
+ * This routine waits for the command to be returned by the Firmware
+ * for some max time.
+ *
+ * Input:
+ * ha = actual ha whose done queue will contain the command
+ * returned by firmware.
+ * cmd = Scsi Command to wait on.
+ *
+ * Returns:
+ * Not Found : 0
+ * Found : 1
+ **************************************************************************/
+static int qla4xxx_eh_wait_on_command(struct scsi_qla_host *ha,
+ struct scsi_cmnd *cmd)
+{
+ int done = 0;
+ struct srb *rp;
+ uint32_t max_wait_time = EH_WAIT_CMD_TOV;
+
+ do {
+ /* Checking to see if its returned to OS */
+ rp = (struct srb *) cmd->SCp.ptr;
+ if (rp == NULL) {
+ done++;
+ break;
+ }
+
+ msleep(2000);
+ } while (max_wait_time--);
+
+ return done;
+}
+
+/**************************************************************************
+ * qla4xxx_wait_for_hba_online
+ * This routine
+ *
+ * Input:
+ * ha - Pointer to host adapter structure
+ *
+ * Remarks:
+ *
+ * Returns:
+ * SUCCESS - Adapter is ONLINE
+ * FAILED - Adapter is DEAD
+ **************************************************************************/
+int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha)
+{
+ unsigned long wait_online;
+
+ wait_online = jiffies + (30 * HZ);
+ while (time_before(jiffies, wait_online)) {
+
+ if (adapter_up(ha))
+ return QLA_SUCCESS;
+ else if (ha->retry_reset_ha_cnt == 0)
+ return QLA_ERROR;
+
+ msleep(2000);
+ }
+
+ return QLA_ERROR;
+}
+
+/**************************************************************************
+ * qla4xxx_eh_abort
+ * This routine aborts commands that currently held in the adapter's
+ * internal queues. Commands that are active are NOT aborted.
+ *
+ * Input:
+ * cmd - Pointer to Linux's SCSI command structure
+ *
+ * Remarks:
+ * Aborts get translated to "device resets" by the scsi switch
+ * which will return a RESET status and not ABORT. Since the
+ * mid-level is expecting an ABORT status during an abort(),
+ * we always elevate to device reset.
+ *
+ * Returns:
+ * SUCCESS - Successfully aborted non-active command
+ * FAILED - Command not found, or command currently active
+ **************************************************************************/
+static int qla4xxx_eh_abort(struct scsi_cmnd *cmd)
+{
+ /*
+ * Aborts get translated to "device resets" by some scsi switches which
+ * will return a RESET status and not ABORT. Since the mid-level is
+ * expecting an ABORT status during an abort(), we always elevate to
+ * device reset.
+ */
+ return FAILED;
+}
+
+/**************************************************************************
+ * qla4xxx_eh_wait_for_active_target_commands
+ * This routine
+ *
+ * Input:
+ * ha - Pointer to host adapter structure.
+ * target - SCSI target ID
+ *
+ * Returns:
+ * 0 - All pending commands returned
+ * non-zero - All pending commands did not return
+ **************************************************************************/
+int qla4xxx_eh_wait_for_active_target_commands(struct scsi_qla_host *ha, int t,
+ int l)
+{
+ int cnt;
+ int status;
+ struct srb *sp;
+ struct scsi_cmnd *cmd;
+
+ /*
+ * Waiting for all commands for the designated target in the active
+ * array
+ */
+ status = 0;
+ for (cnt = 1; cnt < MAX_SRBS; cnt++) {
+ spin_lock(&ha->hardware_lock);
+ sp = ha->active_srb_array[cnt];
+ if (sp) {
+ cmd = sp->cmd;
+ spin_unlock(&ha->hardware_lock);
+ if (cmd->device->id == t && cmd->device->lun == l) {
+ if (!qla4xxx_eh_wait_on_command(ha, cmd)) {
+ status++;
+ break;
+ }
+ }
+ } else {
+ spin_unlock(&ha->hardware_lock);
+ }
+ }
+ return status;
+}
+
+/**************************************************************************
+ * qla4xxx_eh_device_reset
+ * This routine is called by the Linux OS to reset all luns on the
+ * specified target.
+ *
+ * Input:
+ * cmd - Pointer to Linux's SCSI command structure
+ *
+ * Output:
+ * None
+ *
+ * Remarks:
+ * None
+ *
+ * Returns:
+ * SUCCESS - Successfully reset target/lun
+ * FAILED - Failed to reset target/lun
+ **************************************************************************/
+static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd)
+{
+ struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
+ struct ddb_entry *ddb_entry = cmd->device->hostdata;
+ struct srb *sp;
+ int ret = FAILED, stat;
+
+ sp = (struct srb *) cmd->SCp.ptr;
+ if (!sp || !ddb_entry)
+ return ret;
+
+ ql4_printk(KERN_INFO, ha,
+ "scsi%ld:%d:%d:%d: DEVICE RESET ISSUED.\n", ha->host_no,
+ cmd->device->channel, cmd->device->id, cmd->device->lun);
+
+ DEBUG2(printk(KERN_INFO
+ "scsi%ld: DEVICE_RESET cmd=%p jiffies = 0x%lx, timeout=%x, "
+ "dpc_flags=%lx, status=%x allowed=%d\n", ha->host_no,
+ cmd, jiffies, cmd->timeout_per_command / HZ,
+ ha->dpc_flags, cmd->result, cmd->allowed));
+
+ /* FIXME: wait for hba to go online */
+ stat = qla4xxx_reset_lun(ha, ddb_entry, cmd->device->lun);
+ if (stat != QLA_SUCCESS) {
+ ql4_printk(KERN_INFO, ha, "DEVICE RESET FAILED. %d\n", stat);
+
+ goto eh_dev_reset_done;
+ }
+
+ /* Send marker. */
+ ha->marker_needed = 1;
+
+ /*
+ * If we are coming down the EH path, wait for all commands to complete
+ * for the device.
+ */
+ if (cmd->device->host->shost_state == SHOST_RECOVERY) {
+ if (qla4xxx_eh_wait_for_active_target_commands(ha,
+ cmd->device->id,
+ cmd->device->
+ lun)) {
+ ql4_printk(KERN_INFO, ha,
+ "DEVICE RESET FAILED - waiting for "
+ "commands.\n");
+ goto eh_dev_reset_done;
+ }
+ }
+
+ ql4_printk(KERN_INFO, ha,
+ "scsi(%ld:%d:%d:%d): DEVICE RESET SUCCEEDED.\n",
+ ha->host_no, cmd->device->channel, cmd->device->id,
+ cmd->device->lun);
+
+ ret = SUCCESS;
+
+eh_dev_reset_done:
+
+ return ret;
+}
+
+/**************************************************************************
+ * qla4xxx_eh_bus_reset
+ * This routine is called by the Linux OS to reset the specified
+ * adapter/bus.
+ *
+ * Input:
+ * cmd - Pointer to Linux's SCSI command structure
+ *
+ * Returns:
+ * SUCCESS - Successfully reset adapter/bus
+ * FAILED - Failed to reset adapter/bus
+ *
+ **************************************************************************/
+static int qla4xxx_eh_bus_reset(struct scsi_cmnd *cmd)
+{
+ int status = QLA_SUCCESS;
+ int return_status = FAILED;
+ struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
+ struct ddb_entry *ddb_entry = cmd->device->hostdata;
+ struct ddb_entry *dtemp;
+
+ ha = (struct scsi_qla_host *) cmd->device->host->hostdata;
+
+ ql4_printk(KERN_INFO, ha,
+ "scsi(%ld:%d:%d:%d): BUS RESET ISSUED.\n", ha->host_no,
+ cmd->device->channel, cmd->device->id, cmd->device->lun);
+
+ if (qla4xxx_wait_for_hba_online(ha) != QLA_SUCCESS) {
+ DEBUG2(printk("scsi%ld:%d: %s: Unable to reset bus. Adapter "
+ "DEAD.\n", ha->host_no, cmd->device->channel,
+ __func__));
+
+ return FAILED;
+ }
+
+ /* Attempt to reset all valid targets with outstanding commands */
+ list_for_each_entry_safe(ddb_entry, dtemp, &ha->ddb_list, list) {
+ /* Issue a reset */
+ status |= qla4xxx_reset_target(ha, ddb_entry);
+ }
+
+ /*
+ * Status is QLA_SUCCESS if target resets for ALL devices completed
+ * successfully. Otherwise the status is QLA_ERROR.
+ */
+ if (status == QLA_SUCCESS)
+ return_status = SUCCESS;
+
+ ql4_printk(KERN_INFO, ha, "BUS RESET %s.\n",
+ return_status == FAILED ? "FAILED" : "SUCCEDED");
+
+ return return_status;
+}
+
+/**************************************************************************
+ * qla4xxx_reset_target
+ * This routine issues either a warm or cold target reset to the
+ * specified device.
+ *
+ * Input:
+ * ha - Pointer to host adapter structure.
+ * ddb_entry - Pointer to device database entry
+ *
+ * Remarks:
+ * The caller must ensure that the ddb_entry pointer is valid before
+ * calling this routine.
+ *
+ * Returns:
+ * QLA_SUCCESS - Successfully reset target
+ * QLA_ERROR - Failed to reset target
+ **************************************************************************/
+int qla4xxx_reset_target(struct scsi_qla_host *ha, struct ddb_entry *ddb_entry)
+{
+ return QLA_SUCCESS;
+}
+
+/**************************************************************************
+ * qla4xxx_flush_active_srbs
+ * This routine is called just prior to a HARD RESET to return all
+ * outstanding commands back to the Operating System.
+ *
+ * Input:
+ * ha - Pointer to host adapter structure.
+ *
+ * Remarks:
+ * Caller should make sure that the following locks are released
+ * before this calling routine:
+ * Hardware lock, and io_request_lock.
+ *
+ * Returns:
+ * None
+ **************************************************************************/
+static void qla4xxx_flush_active_srbs(struct scsi_qla_host *ha)
+{
+ struct srb *srb;
+ int i;
+ unsigned long flags;
+
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ for (i = 1; i < MAX_SRBS; i++) {
+ if ((srb = ha->active_srb_array[i]) != NULL) {
+ del_from_active_array(ha, i);
+ srb->cmd->result = DID_RESET << 16;
+ qla4xxx_srb_compl(ha, srb);
+ }
+ }
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+}
+
+/**************************************************************************
+ * qla4xxx_eh_host_reset
+ * This routine is invoked by the Linux kernel to perform fatal error
+ * recovery on the specified adapter.
+ *
+ * Input:
+ * cmd - Pointer to Linux's SCSI command structure
+ *
+ * Returns:
+ * SUCCESS - Successfully recovered host adapter
+ * FAILED - Failed to recover host adapter
+ **************************************************************************/
+static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd)
+{
+ int return_status = FAILED;
+ struct scsi_qla_host *ha;
+
+ ha = (struct scsi_qla_host *) cmd->device->host->hostdata;
+
+ ql4_printk(KERN_INFO, ha,
+ "scsi(%ld:%d:%d:%d): ADAPTER RESET ISSUED.\n", ha->host_no,
+ cmd->device->channel, cmd->device->id, cmd->device->lun);
+
+ if (qla4xxx_wait_for_hba_online(ha) != QLA_SUCCESS) {
+ DEBUG2(printk("scsi%ld:%d: %s: Unable to reset host. Adapter "
+ "DEAD.\n", ha->host_no, cmd->device->channel,
+ __func__));
+
+ return FAILED;
+ }
+
+ if (qla4xxx_recover_adapter(ha, PRESERVE_DDB_LIST) == QLA_SUCCESS) {
+ return_status = SUCCESS;
+ }
+
+ ql4_printk(KERN_INFO, ha, "HOST RESET %s.\n",
+ return_status == FAILED ? "FAILED" : "SUCCEDED");
+
+ return return_status;
+}
+
+
+static struct pci_device_id qla4xxx_pci_tbl[] = {
+ {
+ .vendor = PCI_VENDOR_ID_QLOGIC,
+ .device = PCI_DEVICE_ID_QLOGIC_ISP4010,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
+ },
+ {
+ .vendor = PCI_VENDOR_ID_QLOGIC,
+ .device = PCI_DEVICE_ID_QLOGIC_ISP4022,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
+ },
+ {0, 0},
+};
+MODULE_DEVICE_TABLE(pci, qla4xxx_pci_tbl);
+
+struct pci_driver qla4xxx_pci_driver = {
+ .name = DRIVER_NAME,
+ .id_table = qla4xxx_pci_tbl,
+ .probe = qla4xxx_probe_adapter,
+ .remove = qla4xxx_remove_adapter,
+};
+
+static int __init qla4xxx_module_init(void)
+{
+ int ret;
+
+ /* Allocate cache for SRBs. */
+ srb_cachep = kmem_cache_create("qla4xxx_srbs", sizeof(struct srb), 0,
+ SLAB_HWCACHE_ALIGN, NULL, NULL);
+ if (srb_cachep == NULL) {
+ printk(KERN_ERR
+ "%s: Unable to allocate SRB cache..."
+ "Failing load!\n", DRIVER_NAME);
+ return -ENOMEM;
+ }
+
+ /* Derive version string. */
+ strcpy(qla4xxx_version_str, QLA4XXX_DRIVER_VERSION);
+ if (extended_error_logging)
+ strcat(qla4xxx_version_str, "-debug");
+
+ qla4xxx_scsi_transport =
+ iscsi_register_transport(&qla4xxx_iscsi_transport);
+ if (!qla4xxx_scsi_transport)
+ return -ENODEV;
+
+ printk(KERN_INFO "QLogic iSCSI HBA Driver\n");
+ ret = pci_module_init(&qla4xxx_pci_driver);
+ if (ret) {
+ kmem_cache_destroy(srb_cachep);
+ iscsi_unregister_transport(&qla4xxx_iscsi_transport);
+ }
+
+ return ret;
+}
+
+static void __exit qla4xxx_module_exit(void)
+{
+ pci_unregister_driver(&qla4xxx_pci_driver);
+ kmem_cache_destroy(srb_cachep);
+ iscsi_unregister_transport(&qla4xxx_iscsi_transport);
+}
+
+module_init(qla4xxx_module_init);
+module_exit(qla4xxx_module_exit);
+
+MODULE_AUTHOR("QLogic Corporation");
+MODULE_DESCRIPTION("QLogic iSCSI HBA Driver");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(QLA4XXX_DRIVER_VERSION);
^ permalink raw reply related [flat|nested] 7+ messages in thread
* [RFC] [PATCH 4/7] qla4xxx: driver ISR routines
2006-07-10 20:54 ` [RFC] [PATCH 3/7] qla4xxx: driver OS interface files David Somayajulu
@ 2006-07-10 20:57 ` David Somayajulu
2006-07-10 20:58 ` [RFC] [PATCH 5/7] qla4xxx: driver mailbox routines David Somayajulu
0 siblings, 1 reply; 7+ messages in thread
From: David Somayajulu @ 2006-07-10 20:57 UTC (permalink / raw)
To: linux-scsi
Cc: open-iscsi, David Wagner, Ravi Anand, Duane Grigsby,
David Somayajulu
qla4xxx driver ISR routines.
Signed-off-by: Ravi Anand <ravi.anand@qlogic.com>
Signed-off-by: David Somayajulu <david.somayajulu@qlogic.com>
Signed-off-by: Doug Maxey <dwm@bubba.enoyolf.org>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
---
diff --git a/drivers/scsi/qla4xxx/ql4_isr.c b/drivers/scsi/qla4xxx/ql4_isr.c
new file mode 100644
index 0000000..a72256c
--- /dev/null
+++ b/drivers/scsi/qla4xxx/ql4_isr.c
@@ -0,0 +1,989 @@
+/*
+ * QLogic iSCSI HBA Driver
+ * Copyright (c) 2003-2006 QLogic Corporation
+ *
+ * See LICENSE.qla4xxx for copyright and licensing details.
+ */
+
+#include "ql4_def.h"
+
+/**
+ * qla2x00_process_completed_request() - Process a Fast Post response.
+ * @ha: SCSI driver HA context
+ * @index: SRB index
+ */
+static void qla4xxx_process_completed_request(struct scsi_qla_host *ha,
+ uint32_t index)
+{
+ struct srb *srb;
+
+ srb = del_from_active_array(ha, index);
+ if (srb) {
+ /* Save ISP completion status */
+ srb->cmd->result = DID_OK << 16;
+ qla4xxx_srb_compl(ha, srb);
+ } else {
+ DEBUG2(printk("scsi%ld: Invalid ISP SCSI completion handle = "
+ "%d\n", ha->host_no, index));
+ set_bit(DPC_RESET_HA, &ha->dpc_flags);
+ }
+}
+
+/**************************************************************************
+ * qla4xxx_status_entry
+ * This routine processes Status IOCBs
+ *
+ * Input:
+ * ha - Pointer to host adapter structure.
+ * sts_entry - Pointer to status entry structure.
+ *
+ * Returns:
+ * None
+ *
+ * Context:
+ * Interrupt context.
+ **************************************************************************/
+static void qla4xxx_status_entry(struct scsi_qla_host *ha,
+ struct status_entry *sts_entry)
+{
+ uint8_t scsi_status;
+ struct scsi_cmnd *cmd;
+ struct srb *srb;
+ struct ddb_entry *ddb_entry;
+ uint32_t residual;
+ uint16_t sensebytecnt;
+
+ if (sts_entry->completionStatus == SCS_COMPLETE &&
+ sts_entry->scsiStatus == 0) {
+ qla4xxx_process_completed_request(ha,
+ le32_to_cpu(sts_entry->
+ handle));
+ return;
+ }
+
+ srb = del_from_active_array(ha, le32_to_cpu(sts_entry->handle));
+ if (!srb) {
+ /* FIXMEdg: Don't we need to reset ISP in this case??? */
+ DEBUG2(printk(KERN_WARNING "scsi%ld: %s: Status Entry invalid "
+ "handle 0x%x, sp=%p. This cmd may have already "
+ "been completed.\n", ha->host_no, __func__,
+ le32_to_cpu(sts_entry->handle), srb));
+ }
+
+ cmd = srb->cmd;
+ if (cmd == NULL) {
+ DEBUG2(printk("scsi%ld: %s: Command already returned back to "
+ "OS pkt->handle=%d srb=%p srb->state:%d\n",
+ ha->host_no, __func__, sts_entry->handle,
+ srb, srb->state));
+ ql4_printk(KERN_WARNING, ha,
+ "Command is NULL: already returned to OS "
+ "(srb=%p)\n", srb);
+ return;
+ }
+
+ ddb_entry = srb->ddb;
+ if (ddb_entry == NULL) {
+ cmd->result = DID_NO_CONNECT << 16;
+ goto status_entry_exit;
+ }
+
+ residual = le32_to_cpu(sts_entry->residualByteCnt);
+
+ /* Translate ISP error to a Linux SCSI error. */
+ scsi_status = sts_entry->scsiStatus;
+ switch (sts_entry->completionStatus) {
+ case SCS_COMPLETE:
+ if (scsi_status == 0) {
+ cmd->result = DID_OK << 16;
+ break;
+ }
+
+ if (sts_entry->iscsiFlags &
+ (ISCSI_FLAG_RESIDUAL_OVER|ISCSI_FLAG_RESIDUAL_UNDER))
+ cmd->resid = residual;
+
+ cmd->result = DID_OK << 16 | scsi_status;
+
+ if (scsi_status != SCSI_CHECK_CONDITION)
+ break;
+
+ /* Copy Sense Data into sense buffer. */
+ memset(cmd->sense_buffer, 0, sizeof(cmd->sense_buffer));
+
+ sensebytecnt = le16_to_cpu(sts_entry->senseDataByteCnt);
+ if (sensebytecnt == 0)
+ break;
+
+ memcpy(cmd->sense_buffer, sts_entry->senseData,
+ min(sensebytecnt,
+ (uint16_t) sizeof(cmd->sense_buffer)));
+
+ DEBUG2(printk("scsi%ld:%d:%d:%d: %s: sense key = %x, "
+ "ASC/ASCQ = %02x/%02x\n", ha->host_no,
+ cmd->device->channel, cmd->device->id,
+ cmd->device->lun, __func__,
+ sts_entry->senseData[2] & 0x0f,
+ sts_entry->senseData[12],
+ sts_entry->senseData[13]));
+
+ srb->flags |= SRB_GOT_SENSE;
+ break;
+
+ case SCS_INCOMPLETE:
+ /* Always set the status to DID_ERROR, since
+ * all conditions result in that status anyway */
+ cmd->result = DID_ERROR << 16;
+ break;
+
+ case SCS_RESET_OCCURRED:
+ DEBUG2(printk("scsi%ld:%d:%d:%d: %s: Device RESET occurred\n",
+ ha->host_no, cmd->device->channel,
+ cmd->device->id, cmd->device->lun, __func__));
+
+ cmd->result = DID_RESET << 16;
+ break;
+
+ case SCS_ABORTED:
+ DEBUG2(printk("scsi%ld:%d:%d:%d: %s: Abort occurred\n",
+ ha->host_no, cmd->device->channel,
+ cmd->device->id, cmd->device->lun, __func__));
+
+ cmd->result = DID_RESET << 16;
+ break;
+
+ case SCS_TIMEOUT:
+ DEBUG2(printk(KERN_INFO "scsi%ld:%d:%d:%d: Timeout\n",
+ ha->host_no, cmd->device->channel,
+ cmd->device->id, cmd->device->lun));
+
+ cmd->result = DID_BUS_BUSY << 16;
+
+ /*
+ * Mark device missing so that we won't continue to send
+ * I/O to this device. We should get a ddb state change
+ * AEN soon.
+ */
+ if (atomic_read(&ddb_entry->state) == DDB_STATE_ONLINE)
+ qla4xxx_mark_device_missing(ha, ddb_entry);
+ break;
+
+ case SCS_DATA_UNDERRUN:
+ case SCS_DATA_OVERRUN:
+ if (sts_entry->iscsiFlags & ISCSI_FLAG_RESIDUAL_OVER) {
+ DEBUG2(printk("scsi%ld:%d:%d:%d: %s: " "Data overrun, "
+ "residual = 0x%x\n", ha->host_no,
+ cmd->device->channel, cmd->device->id,
+ cmd->device->lun, __func__, residual));
+
+ cmd->result = DID_ERROR << 16;
+ break;
+ }
+
+ if ((sts_entry->iscsiFlags & ISCSI_FLAG_RESIDUAL_UNDER) == 0) {
+ /*
+ * Firmware detected a SCSI transport underrun
+ * condition
+ */
+ cmd->resid = residual;
+ DEBUG2(printk("scsi%ld:%d:%d:%d: %s: UNDERRUN status "
+ "detected, xferlen = 0x%x, residual = "
+ "0x%x\n",
+ ha->host_no, cmd->device->channel,
+ cmd->device->id,
+ cmd->device->lun, __func__,
+ cmd->request_bufflen,
+ residual));
+ }
+
+ /*
+ * If there is scsi_status, it takes precedense over
+ * underflow condition.
+ */
+ if (scsi_status != 0) {
+ cmd->result = DID_OK << 16 | scsi_status;
+
+ if (scsi_status != SCSI_CHECK_CONDITION)
+ break;
+
+ /* Copy Sense Data into sense buffer. */
+ memset(cmd->sense_buffer, 0,
+ sizeof(cmd->sense_buffer));
+
+ sensebytecnt =
+ le16_to_cpu(sts_entry->senseDataByteCnt);
+ if (sensebytecnt == 0)
+ break;
+
+ memcpy(cmd->sense_buffer, sts_entry->senseData,
+ min(sensebytecnt,
+ (uint16_t) sizeof(cmd->sense_buffer)));
+
+ DEBUG2(printk("scsi%ld:%d:%d:%d: %s: sense key = %x, "
+ "ASC/ASCQ = %02x/%02x\n", ha->host_no,
+ cmd->device->channel, cmd->device->id,
+ cmd->device->lun, __func__,
+ sts_entry->senseData[2] & 0x0f,
+ sts_entry->senseData[12],
+ sts_entry->senseData[13]));
+ } else {
+ /*
+ * If RISC reports underrun and target does not
+ * report it then we must have a lost frame, so
+ * tell upper layer to retry it by reporting a
+ * bus busy.
+ */
+ if ((sts_entry->iscsiFlags &
+ ISCSI_FLAG_RESIDUAL_UNDER) == 0) {
+ cmd->result = DID_BUS_BUSY << 16;
+ } else if ((cmd->request_bufflen - residual) <
+ cmd->underflow) {
+ /*
+ * Handle mid-layer underflow???
+ *
+ * For kernels less than 2.4, the driver must
+ * return an error if an underflow is detected.
+ * For kernels equal-to and above 2.4, the
+ * mid-layer will appearantly handle the
+ * underflow by detecting the residual count --
+ * unfortunately, we do not see where this is
+ * actually being done. In the interim, we
+ * will return DID_ERROR.
+ */
+ DEBUG2(printk("scsi%ld:%d:%d:%d: %s: "
+ "Mid-layer Data underrun, "
+ "xferlen = 0x%x, "
+ "residual = 0x%x\n", ha->host_no,
+ cmd->device->channel,
+ cmd->device->id,
+ cmd->device->lun, __func__,
+ cmd->request_bufflen, residual));
+
+ cmd->result = DID_ERROR << 16;
+ } else {
+ cmd->result = DID_OK << 16;
+ }
+ }
+ break;
+
+ case SCS_DEVICE_LOGGED_OUT:
+ case SCS_DEVICE_UNAVAILABLE:
+ /*
+ * Mark device missing so that we won't continue to
+ * send I/O to this device. We should get a ddb
+ * state change AEN soon.
+ */
+ if (atomic_read(&ddb_entry->state) == DDB_STATE_ONLINE)
+ qla4xxx_mark_device_missing(ha, ddb_entry);
+
+ if ((srb->flags & SRB_TAPE) ||
+ atomic_read(&ddb_entry->state) == DDB_STATE_MISSING)
+ cmd->result = DID_BUS_BUSY << 16;
+ else
+ cmd->result = DID_ERROR << 16;
+ break;
+
+ case SCS_QUEUE_FULL:
+ /*
+ * SCSI Mid-Layer handles device queue full
+ */
+ cmd->result = DID_OK << 16 | sts_entry->scsiStatus;
+ DEBUG2(printk("scsi%ld:%d:%d: %s: QUEUE FULL detected "
+ "compl=%02x, scsi=%02x, state=%02x, iFlags=%02x,"
+ " iResp=%02x\n", ha->host_no, cmd->device->id,
+ cmd->device->lun, __func__,
+ sts_entry->completionStatus,
+ sts_entry->scsiStatus, sts_entry->state_flags,
+ sts_entry->iscsiFlags,
+ sts_entry->iscsiResponse));
+ break;
+
+ default:
+ cmd->result = DID_ERROR << 16;
+ break;
+ }
+
+status_entry_exit:
+
+ /* complete the request */
+ srb->cc_stat = sts_entry->completionStatus;
+ qla4xxx_srb_compl(ha, srb);
+}
+
+/**************************************************************************
+ * qla4xxx_process_response_queue
+ * This routine handles the Response Queue Completion.
+ *
+ * Input:
+ * ha - Pointer to host adapter structure.
+ *
+ * Output:
+ * None
+ *
+ * Remarks:
+ * hardware_lock locked upon entry
+ *
+ * Returns:
+ * QLA_SUCCESS - Successfully processed response queue
+ * QLA_ERROR - Failed to process response queue
+ *
+ * Context:
+ * Interrupt context.
+ **************************************************************************/
+static void qla4xxx_process_response_queue(struct scsi_qla_host * ha)
+{
+ uint32_t count = 0;
+ struct srb *srb = NULL;
+ struct status_entry *sts_entry;
+
+ /* Process all responses from response queue */
+ while ((ha->response_in =
+ (uint16_t)le32_to_cpu(ha->shadow_regs->rsp_q_in)) !=
+ ha->response_out) {
+ sts_entry = (struct status_entry *) ha->response_ptr;
+ count++;
+
+ /* Advance pointers for next entry */
+ if (ha->response_out == (RESPONSE_QUEUE_DEPTH - 1)) {
+ ha->response_out = 0;
+ ha->response_ptr = ha->response_ring;
+ } else {
+ ha->response_out++;
+ ha->response_ptr++;
+ }
+
+ /* process entry */
+ switch (sts_entry->hdr.entryType) {
+ case ET_STATUS:
+ /*
+ * Common status - Single completion posted in single
+ * IOSB.
+ */
+ qla4xxx_status_entry(ha, sts_entry);
+ break;
+
+ case ET_PASSTHRU_STATUS:
+ qla4xxx_isns_process_response(ha,
+ (struct
+ passthru_status *)
+ sts_entry);
+ break;
+
+ case ET_STATUS_CONTINUATION:
+ /* Just throw away the status continuation entries */
+ DEBUG2(printk("scsi%ld: %s: Status Continuation entry "
+ "- ignoring\n", ha->host_no, __func__));
+ break;
+
+ case ET_COMMAND:
+ /* ISP device queue is full. Command not
+ * accepted by ISP. Queue command for
+ * later */
+
+ srb = del_from_active_array(ha,
+ le32_to_cpu(sts_entry->
+ handle));
+ if (srb == NULL)
+ goto exit_prq_invalid_handle;
+
+ DEBUG2(printk("scsi%ld: %s: FW device queue full, "
+ "srb %p\n", ha->host_no, __func__, srb));
+
+ /* ETRY normally by sending it back with
+ * DID_BUS_BUSY */
+ srb->cmd->result = DID_BUS_BUSY << 16;
+ qla4xxx_srb_compl(ha, srb);
+ break;
+
+ case ET_CONTINUE:
+ /* Just throw away the continuation entries */
+ DEBUG2(printk("scsi%ld: %s: Continuation entry - "
+ "ignoring\n", ha->host_no, __func__));
+ break;
+
+ default:
+ /*
+ * Invalid entry in response queue, reset RISC
+ * firmware.
+ */
+ DEBUG2(printk("scsi%ld: %s: Invalid entry %x in "
+ "response queue \n", ha->host_no,
+ __func__,
+ sts_entry->hdr.entryType));
+ goto exit_prq_error;
+ }
+ }
+
+ /*
+ * Done with responses, update the ISP For QLA4010, this also clears
+ * the interrupt.
+ */
+ writel(ha->response_out, &ha->reg->rsp_q_out);
+ readl(&ha->reg->rsp_q_out);
+
+ return;
+
+exit_prq_invalid_handle:
+ DEBUG2(printk("scsi%ld: %s: Invalid handle(srb)=%p type=%x IOCS=%x\n",
+ ha->host_no, __func__, srb, sts_entry->hdr.entryType,
+ sts_entry->completionStatus));
+
+exit_prq_error:
+ writel(ha->response_out, &ha->reg->rsp_q_out);
+ readl(&ha->reg->rsp_q_out);
+
+ set_bit(DPC_RESET_HA, &ha->dpc_flags);
+}
+
+/**************************************************************************
+ * qla4xxx_isr_decode_mailbox
+ * This routine decodes the mailbox status during the ISR.
+ *
+ * Input:
+ * ha - Pointer to host adapter structure.
+ * mailbox_status - Mailbox status.
+ *
+ * Remarks:
+ * hardware_lock locked upon entry
+ *
+ * Returns:
+ * None.
+ *
+ * Context:
+ * Interrupt context.
+ **************************************************************************/
+static void qla4xxx_isr_decode_mailbox(struct scsi_qla_host * ha,
+ uint32_t mbox_status)
+{
+ int i;
+ static uint32_t mbox_sts[MBOX_REG_COUNT];
+
+ if ((mbox_status == MBOX_STS_BUSY) ||
+ (mbox_status == MBOX_STS_INTERMEDIATE_COMPLETION) ||
+ (mbox_status >> 12 == MBOX_COMPLETION_STATUS)) {
+ ha->mbox_status[0] = mbox_status;
+
+ if (test_bit(AF_MBOX_COMMAND, &ha->flags)) {
+ /*
+ * Copy all mailbox registers to a temporary
+ * location and set mailbox command done flag
+ */
+ for (i = 1; i < ha->mbox_status_count; i++)
+ ha->mbox_status[i] =
+ readl(&ha->reg->mailbox[i]);
+
+ set_bit(AF_MBOX_COMMAND_DONE, &ha->flags);
+ wake_up(&ha->mailbox_wait_queue);
+ }
+ } else if (mbox_status >> 12 == MBOX_ASYNC_EVENT_STATUS) {
+ /* Immediately process the AENs that don't require much work.
+ * Only queue the database_changed AENs */
+ switch (mbox_status) {
+ case MBOX_ASTS_SYSTEM_ERROR:
+ /* Log Mailbox registers */
+ if (ql4xdontresethba) {
+ DEBUG2(printk("%s:Dont Reset HBA\n",
+ __func__));
+ } else {
+ set_bit(AF_GET_CRASH_RECORD, &ha->flags);
+ set_bit(DPC_RESET_HA, &ha->dpc_flags);
+ }
+ break;
+
+ case MBOX_ASTS_REQUEST_TRANSFER_ERROR:
+ case MBOX_ASTS_RESPONSE_TRANSFER_ERROR:
+ case MBOX_ASTS_NVRAM_INVALID:
+ case MBOX_ASTS_IP_ADDRESS_CHANGED:
+ case MBOX_ASTS_DHCP_LEASE_EXPIRED:
+ DEBUG2(printk("scsi%ld: AEN %04x, ERROR Status, "
+ "Reset HA\n", ha->host_no, mbox_status));
+ set_bit(DPC_RESET_HA, &ha->dpc_flags);
+ break;
+
+ case MBOX_ASTS_LINK_UP:
+ DEBUG2(printk("scsi%ld: AEN %04x Adapter LINK UP\n",
+ ha->host_no, mbox_status));
+ set_bit(AF_LINK_UP, &ha->flags);
+ break;
+
+ case MBOX_ASTS_LINK_DOWN:
+ DEBUG2(printk("scsi%ld: AEN %04x Adapter LINK DOWN\n",
+ ha->host_no, mbox_status));
+ clear_bit(AF_LINK_UP, &ha->flags);
+ break;
+
+ case MBOX_ASTS_HEARTBEAT:
+ ha->seconds_since_last_heartbeat = 0;
+ break;
+
+ case MBOX_ASTS_DHCP_LEASE_ACQUIRED:
+ DEBUG2(printk("scsi%ld: AEN %04x DHCP LEASE "
+ "ACQUIRED\n", ha->host_no, mbox_status));
+ set_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags);
+ break;
+
+ case MBOX_ASTS_PROTOCOL_STATISTIC_ALARM:
+ case MBOX_ASTS_SCSI_COMMAND_PDU_REJECTED: /* Target
+ * mode
+ * only */
+ case MBOX_ASTS_UNSOLICITED_PDU_RECEIVED: /* Connection mode */
+ case MBOX_ASTS_IPSEC_SYSTEM_FATAL_ERROR:
+ case MBOX_ASTS_SUBNET_STATE_CHANGE:
+ /* No action */
+ DEBUG2(printk("scsi%ld: AEN %04x\n", ha->host_no,
+ mbox_status));
+ break;
+
+ case MBOX_ASTS_MAC_ADDRESS_CHANGED:
+ case MBOX_ASTS_DNS:
+ /* No action */
+ DEBUG2(printk(KERN_INFO "scsi%ld: AEN %04x, "
+ "mbox_sts[1]=%04x, mbox_sts[2]=%04x\n",
+ ha->host_no, mbox_status,
+ readl(&ha->reg->mailbox[1]),
+ readl(&ha->reg->mailbox[2])));
+ break;
+
+ case MBOX_ASTS_SELF_TEST_FAILED:
+ case MBOX_ASTS_LOGIN_FAILED:
+ /* No action */
+ DEBUG2(printk("scsi%ld: AEN %04x, mbox_sts[1]=%04x, "
+ "mbox_sts[2]=%04x, mbox_sts[3]=%04x\n",
+ ha->host_no, mbox_status,
+ readl(&ha->reg->mailbox[1]),
+ readl(&ha->reg->mailbox[2]),
+ readl(&ha->reg->mailbox[3])));
+ break;
+
+ case MBOX_ASTS_DATABASE_CHANGED:
+ /* Queue AEN information and process it in the DPC
+ * routine */
+ if (ha->aen_q_count > 0) {
+ /* advance pointer */
+ if (ha->aen_in == (MAX_AEN_ENTRIES - 1))
+ ha->aen_in = 0;
+ else
+ ha->aen_in++;
+
+ /* decrement available counter */
+ ha->aen_q_count--;
+
+ for (i = 1; i < MBOX_AEN_REG_COUNT; i++)
+ ha->aen_q[ha->aen_in].mbox_sts[i] =
+ readl(&ha->reg->mailbox[i]);
+
+ ha->aen_q[ha->aen_in].mbox_sts[0] = mbox_status;
+
+ /* print debug message */
+ DEBUG2(printk("scsi%ld: AEN[%d] %04x queued"
+ " mb1:0x%x mb2:0x%x mb3:0x%x mb4:0x%x\n",
+ ha->host_no, ha->aen_in,
+ mbox_status,
+ ha->aen_q[ha->aen_in].mbox_sts[1],
+ ha->aen_q[ha->aen_in].mbox_sts[2],
+ ha->aen_q[ha->aen_in].mbox_sts[3],
+ ha->aen_q[ha->aen_in]. mbox_sts[4]));
+
+ /* The DPC routine will process the aen */
+ set_bit(DPC_AEN, &ha->dpc_flags);
+ } else {
+ DEBUG2(printk("scsi%ld: %s: aen %04x, queue "
+ "overflowed! AEN LOST!!\n",
+ ha->host_no, __func__,
+ mbox_status));
+
+ DEBUG2(printk("scsi%ld: DUMP AEN QUEUE\n",
+ ha->host_no));
+
+ for (i = 0; i < MAX_AEN_ENTRIES; i++) {
+ DEBUG2(printk("AEN[%d] %04x %04x %04x "
+ "%04x\n", i,
+ ha->aen_q[i].mbox_sts[0],
+ ha->aen_q[i].mbox_sts[1],
+ ha->aen_q[i].mbox_sts[2],
+ ha->aen_q[i].mbox_sts[3]));
+ }
+ }
+ break;
+
+ case MBOX_ASTS_ISNS_UNSOLICITED_PDU_RECEIVED:
+ memset(&mbox_sts, 0, sizeof(mbox_sts));
+ mbox_sts[0] = mbox_status;
+ mbox_sts[1] = readl(&ha->reg->mailbox[1]);
+ mbox_sts[2] = readl(&ha->reg->mailbox[2]);
+ mbox_sts[3] = readl(&ha->reg->mailbox[3]);
+ mbox_sts[4] = readl(&ha->reg->mailbox[4]);
+ mbox_sts[5] = readl(&ha->reg->mailbox[5]);
+
+ if (mbox_sts[1] == ISNS_EVENT_DATA_RECEIVED) {
+ DEBUG2(printk("scsi%d: AEN %04x, mbox_sts[1]="
+ "%04x, "
+ "mbox_sts[2]=%04x,"
+ "mbox_sts[3]=%04x, "
+ "mbox_sts[4]=%04x\n",
+ (int)ha->host_no, mbox_status,
+ mbox_sts[1], mbox_sts[2],
+ mbox_sts[3], mbox_sts[4]));
+
+ if (qla4xxx_isns_get_server_request(ha,
+ mbox_sts[3],
+ mbox_sts[2])
+ != QLA_SUCCESS) {
+ DEBUG2(printk("scsi%d: %s: AEN %04x, "
+ "isns_get_server_request"
+ " FAILED!!\n",
+ (int)ha->host_no,
+ __func__, mbox_status));
+ }
+ }
+ else if (mbox_sts[1] == ISNS_EVENT_CONNECTION_OPENED) {
+ DEBUG2(printk("scsi%d: AEN %04x, iSNS Service "
+ "Connection Opened!\n"
+ "mbox_sts[2]=%08x, mbox_sts[3]="
+ "%08x, "
+ "mbox_sts[4]=%08x, "
+ "mbox_sts[5]=%08x\n",
+ (int)ha->host_no, mbox_status,
+ mbox_sts[2], mbox_sts[3],
+ mbox_sts[4], mbox_sts[5]));
+
+ ha->isns_rsp.conn_id =
+ (uint16_t)(mbox_sts[2] & 0xFFFF);
+ ha->isns_rsp.scn_conn_id =
+ (uint16_t)(mbox_sts[3] & 0xFFFF);
+ ha->isns_rsp.esi_conn_id =
+ (uint16_t)(mbox_sts[4] & 0xFFFF);
+
+ ha->isns_rsp.conn_port =
+ (uint16_t)(mbox_sts[2] >> 16);
+ ha->isns_rsp.scn_port =
+ (uint16_t)(mbox_sts[3] >> 16);
+ ha->isns_rsp.esi_port =
+ (uint16_t)(mbox_sts[4] >> 16);
+
+ set_bit(AF_ISNS_CMD_DONE, &ha->flags);
+
+ }
+ else if (mbox_sts[1] == ISNS_EVENT_CONNECTION_FAILED) {
+ DEBUG2(printk("scsi%d: AEN %04x, iSNS Service"
+ " Connection FAILED! "
+ "reason %04x\n",
+ (int)ha->host_no, mbox_status,
+ mbox_sts[2]));
+ }
+ break;
+ default:
+ DEBUG2(printk(KERN_WARNING
+ "scsi%ld: AEN %04x UNKNOWN\n",
+ ha->host_no, mbox_status));
+ break;
+ }
+ } else {
+ DEBUG2(printk("scsi%ld: Unknown mailbox status %08X\n",
+ ha->host_no, mbox_status));
+
+ ha->mbox_status[0] = mbox_status;
+ }
+}
+
+/**************************************************************************
+ * qla4xxx_interrupt_service_routine
+ * This routine services the interrupt
+ *
+ * Input:
+ * ha - Pointer to host adapter structure.
+ *
+ * Remarks:
+ * hardware_lock locked upon entry
+ *
+ * Returns:
+ * QLA_SUCCESS - success, An interrupt was found and processed
+ * QLA_ERROR - failure, The adapter was not interrupting
+ *
+ * Context:
+ * Interrupt context.
+ **************************************************************************/
+void qla4xxx_interrupt_service_routine(struct scsi_qla_host * ha,
+ uint32_t intr_status)
+{
+ /* Process response queue interrupt. */
+ if (intr_status & CSR_SCSI_COMPLETION_INTR)
+ qla4xxx_process_response_queue(ha);
+
+ /* Process mailbox/asynch event interrupt.*/
+ if (intr_status & CSR_SCSI_PROCESSOR_INTR) {
+ qla4xxx_isr_decode_mailbox(ha,
+ readl(&ha->reg->mailbox[0]));
+
+ /* Clear Mailbox Interrupt */
+ writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
+ &ha->reg->ctrl_status);
+ readl(&ha->reg->ctrl_status);
+ }
+}
+
+/**************************************************************************
+ * qla4xxx_intr_handler
+ * This routine handles the H/W interrupt
+ *
+ * Input:
+ * irq - Unused
+ * dev_id - Pointer to host adapter structure
+ * regs - Unused
+ *
+ * Returns:
+ * None
+ *
+ * Context:
+ * Interrupt context.
+ **************************************************************************/
+irqreturn_t qla4xxx_intr_handler(int irq, void *dev_id, struct pt_regs *regs)
+{
+ struct scsi_qla_host *ha;
+ uint32_t intr_status;
+ unsigned long flags = 0;
+ uint8_t reqs_count = 0;
+
+ ha = (struct scsi_qla_host *) dev_id;
+ if (!ha) {
+ DEBUG2(printk(KERN_INFO
+ "qla4xxx: Interrupt with NULL host ptr\n"));
+ return IRQ_NONE;
+ }
+
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+
+ /*
+ * Repeatedly service interrupts up to a maximum of
+ * MAX_REQS_SERVICED_PER_INTR
+ */
+ while (1) {
+ /*
+ * Read interrupt status
+ */
+ if (le32_to_cpu(ha->shadow_regs->rsp_q_in) !=
+ ha->response_out)
+ intr_status = CSR_SCSI_COMPLETION_INTR;
+ else
+ intr_status = readl(&ha->reg->ctrl_status);
+
+ if ((intr_status &
+ (CSR_SCSI_RESET_INTR|CSR_FATAL_ERROR|INTR_PENDING)) ==
+ 0) {
+ if (reqs_count == 0)
+ ha->spurious_int_count++;
+ break;
+ }
+
+ if (intr_status & CSR_FATAL_ERROR) {
+ DEBUG2(printk(KERN_INFO "scsi%ld: Fatal Error, "
+ "Status 0x%04x\n", ha->host_no,
+ readl(isp_port_error_status (ha))));
+
+ /* Issue Soft Reset to clear this error condition.
+ * This will prevent the RISC from repeatedly
+ * interrupting the driver; thus, allowing the DPC to
+ * get scheduled to continue error recovery.
+ * NOTE: Disabling RISC interrupts does not work in
+ * this case, as CSR_FATAL_ERROR overrides
+ * CSR_SCSI_INTR_ENABLE */
+ if ((readl(&ha->reg->ctrl_status) &
+ CSR_SCSI_RESET_INTR) == 0) {
+ writel(set_rmask(CSR_SOFT_RESET),
+ &ha->reg->ctrl_status);
+ readl(&ha->reg->ctrl_status);
+ }
+
+ writel(set_rmask(CSR_FATAL_ERROR),
+ &ha->reg->ctrl_status);
+ readl(&ha->reg->ctrl_status);
+
+ __qla4xxx_disable_intrs(ha);
+
+ set_bit(DPC_RESET_HA, &ha->dpc_flags);
+
+ break;
+ } else if (intr_status & CSR_SCSI_RESET_INTR) {
+ clear_bit(AF_ONLINE, &ha->flags);
+ __qla4xxx_disable_intrs(ha);
+
+ writel(set_rmask(CSR_SCSI_RESET_INTR),
+ &ha->reg->ctrl_status);
+ readl(&ha->reg->ctrl_status);
+
+ set_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
+
+ break;
+ } else if (intr_status & INTR_PENDING) {
+ qla4xxx_interrupt_service_routine(ha, intr_status);
+ ha->total_io_count++;
+ if (++reqs_count == MAX_REQS_SERVICED_PER_INTR)
+ break;
+
+ intr_status = 0;
+ }
+ }
+
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+ return IRQ_HANDLED;
+}
+
+/**************************************************************************
+ * qla4xxx_process_aen
+ * This routine processes Asynchronous Events received from the firmware.
+ *
+ * Input:
+ * ha - Pointer to host adapter structure.
+ * process_aen -
+ * PROCESS_ALL_AENS 0
+ * FLUSH_DDB_CHANGED_AENS 1
+ * RELOGIN_DDB_CHANGED_AENS 2
+ *
+ * Returns:
+ * None
+ **************************************************************************/
+void qla4xxx_process_aen(struct scsi_qla_host * ha, uint8_t process_aen)
+{
+ uint32_t mbox_sts[MBOX_AEN_REG_COUNT];
+ struct aen *aen;
+ int i;
+ unsigned long flags;
+
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ while (ha->aen_out != ha->aen_in) {
+ /* Advance pointers for next entry */
+ if (ha->aen_out == (MAX_AEN_ENTRIES - 1))
+ ha->aen_out = 0;
+ else
+ ha->aen_out++;
+
+ ha->aen_q_count++;
+ aen = &ha->aen_q[ha->aen_out];
+
+ /* copy aen information to local structure */
+ for (i = 0; i < MBOX_AEN_REG_COUNT; i++)
+ mbox_sts[i] = aen->mbox_sts[i];
+
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+ DEBUG(printk("scsi%ld: AEN[%d] %04x, index [%d] state=%04x "
+ "mod=%x conerr=%08x \n", ha->host_no, ha->aen_out,
+ mbox_sts[0], mbox_sts[2], mbox_sts[3],
+ mbox_sts[1], mbox_sts[4]));
+
+ switch (mbox_sts[0]) {
+ case MBOX_ASTS_DATABASE_CHANGED:
+ if (process_aen == FLUSH_DDB_CHANGED_AENS) {
+ DEBUG2(printk("scsi%ld: AEN[%d] %04x, index "
+ "[%d] state=%04x FLUSHED!\n",
+ ha->host_no, ha->aen_out,
+ mbox_sts[0], mbox_sts[2],
+ mbox_sts[3]));
+ break;
+ } else if (process_aen == RELOGIN_DDB_CHANGED_AENS) {
+ /* for use during init time, we only want to
+ * relogin non-active ddbs */
+ struct ddb_entry *ddb_entry;
+
+ ddb_entry =
+ /* FIXME: name length? */
+ qla4xxx_lookup_ddb_by_fw_index(ha,
+ mbox_sts[2]);
+ if (!ddb_entry)
+ break;
+
+ ddb_entry->dev_scan_wait_to_complete_relogin =
+ 0;
+ ddb_entry->dev_scan_wait_to_start_relogin =
+ jiffies +
+ ((ddb_entry->default_time2wait +
+ 4) * HZ);
+
+ DEBUG2(printk("scsi%ld: ddb index [%d] initate"
+ " RELOGIN after %d seconds\n",
+ ha->host_no,
+ ddb_entry->fw_ddb_index,
+ ddb_entry->default_time2wait +
+ 4));
+ break;
+ }
+
+ if (mbox_sts[1] == 0) { /* Global DB change. */
+ qla4xxx_reinitialize_ddb_list(ha);
+ } else if (mbox_sts[1] == 1) { /* Specific device. */
+ qla4xxx_process_ddb_changed(ha, mbox_sts[2],
+ mbox_sts[3]);
+ }
+ break;
+ }
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ }
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+}
+
+uint8_t qla4xxx_isns_process_response(struct scsi_qla_host *ha,
+ struct passthru_status *sts_entry)
+{
+ uint32_t handle = le32_to_cpu(sts_entry->handle);
+ uint32_t inResidual = le32_to_cpu(sts_entry->inResidual);
+ struct pdu_entry *pdu_entry = (struct pdu_entry *) &ha->pdu_queue[
+ iocb_isns_pt_pdu_index(handle)];
+ uint32_t pdu_type = iocb_isns_pt_pdu_type(handle);
+ uint8_t status = QLA_SUCCESS;
+ struct iscsi_hdr hdr;/* dummy header */
+
+ DEBUG2(printk("qla4xxx_passthru_status_entry"));
+
+ DEBUG2(printk("scsi%d: %s to=0x%x "
+ "IOCS=0x%02x OutResidual/Len=0x%x/0x%x "
+ "InResidual/Len=0x%x/0x%x\n",
+ (int)ha->host_no, __func__,
+ le16_to_cpu(sts_entry->timeout),
+ sts_entry->completionStatus,
+ le32_to_cpu(sts_entry->outResidual),
+ pdu_entry->SendBuffLen,
+ inResidual,
+ pdu_entry->RecvBuffLen));
+
+ if (sts_entry->completionStatus != PASSTHRU_STATUS_COMPLETE) {
+
+ qla4xxx_free_pdu(ha, pdu_entry);
+ set_bit(DPC_ISNS_RESTART, &ha->dpc_flags);
+ /* FIXME: should this set error? */
+ goto exit_pt_sts;
+ }
+
+ switch (pdu_type) {
+ case ISNS_ASYNCH_RSP_PDU:
+ qla4xxx_free_pdu(ha, pdu_entry);
+ break;
+
+ case ISNS_ASYNCH_REQ_PDU:
+ case ISNS_REQ_RSP_PDU:
+ pdu_entry->RecvBuffLen -= inResidual;
+
+ DEBUG2(printk("scsi%d: %s %s PDU Buff=%p, PDU RecvLen=0x%X\n",
+ (int)ha->host_no, __func__,
+ ((pdu_type == ISNS_ASYNCH_REQ_PDU) ?
+ "ISNS_ASYNCH_REQ_PDU":"ISNS_REQ_RSP_PDU"),
+ pdu_entry->Buff, pdu_entry->RecvBuffLen));
+
+
+ (void)iscsi_recv_pdu(ha->isns_conn, &hdr, pdu_entry->Buff,
+ pdu_entry->RecvBuffLen);
+
+
+ qla4xxx_free_pdu(ha, pdu_entry);
+ break;
+ default:
+ DEBUG2(printk("scsi%d: %s iSNS handle 0x%x invalid\n",
+ (int)ha->host_no, __func__, handle));
+ status = QLA_ERROR;
+ break;
+ }
+
+exit_pt_sts:
+ return status;
+}
^ permalink raw reply related [flat|nested] 7+ messages in thread
* [RFC] [PATCH 5/7] qla4xxx: driver mailbox routines
2006-07-10 20:57 ` [RFC] [PATCH 4/7] qla4xxx: driver ISR routines David Somayajulu
@ 2006-07-10 20:58 ` David Somayajulu
2006-07-10 21:01 ` [RFC] [PATCH 6/7] qla4xxx: driver support routines David Somayajulu
0 siblings, 1 reply; 7+ messages in thread
From: David Somayajulu @ 2006-07-10 20:58 UTC (permalink / raw)
To: linux-scsi
Cc: open-iscsi, David Wagner, Ravi Anand, Duane Grigsby,
David Somayajulu
qla4xxx driver Mailbox routines.
Signed-off-by: Ravi Anand <ravi.anand@qlogic.com>
Signed-off-by: David Somayajulu <david.somayajulu@qlogic.com>
Signed-off-by: Doug Maxey <dwm@bubba.enoyolf.org>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
---
diff --git a/drivers/scsi/qla4xxx/ql4_mbx.c b/drivers/scsi/qla4xxx/ql4_mbx.c
new file mode 100644
index 0000000..e4b9107
--- /dev/null
+++ b/drivers/scsi/qla4xxx/ql4_mbx.c
@@ -0,0 +1,1092 @@
+/*
+ * QLogic iSCSI HBA Driver
+ * Copyright (c) 2003-2006 QLogic Corporation
+ *
+ * See LICENSE.qla4xxx for copyright and licensing details.
+ */
+
+#include "ql4_def.h"
+
+
+/**************************************************************************
+ * qla4xxx_mailbox_command
+ * This routine sssue mailbox commands and waits for completion.
+ *
+ * Input:
+ * ha - Pointer to host adapter structure.
+ * inCount - number of mailbox registers to load.
+ * outCount - number of mailbox registers to return.
+ * mbx_cmd - data pointer for mailbox in registers.
+ * mbx_sts - data pointer for mailbox out registers.
+ *
+ * Output:
+ * mbx_sts - returned mailbox out data.
+ *
+ * Remarks:
+ * If outCount is 0, this routine completes successfully WITHOUT waiting
+ * for the mailbox command to complete.
+ *
+ * Returns:
+ * QLA_SUCCESS - Mailbox command completed successfully
+ * QLA_ERROR - Mailbox command competed in error.
+ **************************************************************************/
+int qla4xxx_mailbox_command(struct scsi_qla_host *ha, uint8_t inCount,
+ uint8_t outCount, uint32_t *mbx_cmd,
+ uint32_t *mbx_sts)
+{
+ int status = QLA_ERROR;
+ uint8_t i;
+ u_long wait_count;
+ uint32_t intr_status;
+ unsigned long flags = 0;
+ DECLARE_WAITQUEUE(wait, current);
+
+ mutex_lock(&ha->mbox_sem);
+
+ /* Mailbox code active */
+ set_bit(AF_MBOX_COMMAND, &ha->flags);
+
+ /* Make sure that pointers are valid */
+ if (!mbx_cmd || !mbx_sts) {
+ DEBUG2(printk("scsi%ld: %s: Invalid mbx_cmd or mbx_sts "
+ "pointer\n", ha->host_no, __func__));
+ goto mbox_exit;
+ }
+
+ /* To prevent overwriting mailbox registers for a command that has
+ * not yet been serviced, check to see if a previously issued
+ * mailbox command is interrupting.
+ * -----------------------------------------------------------------
+ */
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ intr_status = readl(&ha->reg->ctrl_status);
+ if (intr_status & CSR_SCSI_PROCESSOR_INTR) {
+ /* Service existing interrupt */
+ qla4xxx_interrupt_service_routine(ha, intr_status);
+ clear_bit(AF_MBOX_COMMAND_DONE, &ha->flags);
+ }
+
+ /* Send the mailbox command to the firmware */
+ ha->mbox_status_count = outCount;
+ for (i = 0; i < outCount; i++)
+ ha->mbox_status[i] = 0;
+
+ /* Load all mailbox registers, except mailbox 0. */
+ for (i = 1; i < inCount; i++)
+ writel(mbx_cmd[i], &ha->reg->mailbox[i]);
+
+ /* Wakeup firmware */
+ writel(mbx_cmd[0], &ha->reg->mailbox[0]);
+ readl(&ha->reg->mailbox[0]);
+ writel(set_rmask(CSR_INTR_RISC), &ha->reg->ctrl_status);
+ readl(&ha->reg->ctrl_status);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+ /* Wait for completion */
+ set_current_state(TASK_UNINTERRUPTIBLE);
+ add_wait_queue(&ha->mailbox_wait_queue, &wait);
+
+ /*
+ * If we don't want status, don't wait for the mailbox command to
+ * complete. For example, MBOX_CMD_RESET_FW doesn't return status,
+ * you must poll the inbound Interrupt Mask for completion.
+ */
+ if (outCount == 0) {
+ status = QLA_SUCCESS;
+ set_current_state(TASK_RUNNING);
+ remove_wait_queue(&ha->mailbox_wait_queue, &wait);
+ goto mbox_exit;
+ }
+ /* Wait for command to complete */
+ wait_count = jiffies + MBOX_TOV * HZ;
+ while (test_bit(AF_MBOX_COMMAND_DONE, &ha->flags) == 0) {
+ if (time_after_eq(jiffies, wait_count))
+ break;
+
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ intr_status = readl(&ha->reg->ctrl_status);
+ if (intr_status & INTR_PENDING) {
+ /*
+ * Service the interrupt.
+ * The ISR will save the mailbox status registers
+ * to a temporary storage location in the adapter
+ * structure.
+ */
+ ha->mbox_status_count = outCount;
+ qla4xxx_interrupt_service_routine(ha, intr_status);
+ }
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+ mdelay(10);
+ }
+ set_current_state(TASK_RUNNING);
+ remove_wait_queue(&ha->mailbox_wait_queue, &wait);
+
+ /* Check for mailbox timeout. */
+ if (!test_bit(AF_MBOX_COMMAND_DONE, &ha->flags)) {
+ DEBUG2(printk("scsi%ld: Mailbox Cmd 0x%08X timed out ...,"
+ " Scheduling Adapter Reset\n", ha->host_no,
+ mbx_cmd[0]));
+ ha->mailbox_timeout_count++;
+ mbx_sts[0] = (-1);
+ set_bit(DPC_RESET_HA, &ha->dpc_flags);
+ goto mbox_exit;
+ }
+
+ /*
+ * Copy the mailbox out registers to the caller's mailbox in/out
+ * structure.
+ */
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ for (i = 0; i < outCount; i++)
+ mbx_sts[i] = ha->mbox_status[i];
+
+ /* Set return status and error flags (if applicable). */
+ switch (ha->mbox_status[0]) {
+ case MBOX_STS_COMMAND_COMPLETE:
+ status = QLA_SUCCESS;
+ break;
+
+ case MBOX_STS_INTERMEDIATE_COMPLETION:
+ status = QLA_SUCCESS;
+ break;
+
+ case MBOX_STS_BUSY:
+ DEBUG2( printk("scsi%ld: %s: Cmd = %08X, ISP BUSY\n",
+ ha->host_no, __func__, mbx_cmd[0]));
+ ha->mailbox_timeout_count++;
+ break;
+
+ default:
+ DEBUG2(printk("scsi%ld: %s: **** FAILED, cmd = %08X, "
+ "sts = %08X ****\n", ha->host_no, __func__,
+ mbx_cmd[0], mbx_sts[0]));
+ break;
+ }
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+mbox_exit:
+ clear_bit(AF_MBOX_COMMAND, &ha->flags);
+ clear_bit(AF_MBOX_COMMAND_DONE, &ha->flags);
+ mutex_unlock(&ha->mbox_sem);
+
+ return status;
+}
+
+
+/*
+ * qla4xxx_issue_iocb
+ * Issue IOCB using mailbox command
+ *
+ * Input:
+ * ha = adapter state pointer.
+ * buffer = buffer pointer.
+ * phys_addr = physical address of buffer.
+ * size = size of buffer.
+ * TARGET_QUEUE_LOCK must be released.
+ * ADAPTER_STATE_LOCK must be released.
+ *
+ * Returns:
+ * qla2x00 local function return status code.
+ */
+int
+qla4xxx_issue_iocb(struct scsi_qla_host * ha, void *buffer,
+ dma_addr_t phys_addr, size_t size)
+{
+ uint32_t mbox_cmd[MBOX_REG_COUNT];
+ uint32_t mbox_sts[MBOX_REG_COUNT];
+ int status;
+
+ memset(&mbox_cmd, 0, sizeof(mbox_cmd));
+ memset(&mbox_sts, 0, sizeof(mbox_sts));
+ mbox_cmd[0] = MBOX_CMD_EXECUTE_IOCB_A64;
+ mbox_cmd[1] = 0;
+ mbox_cmd[2] = LSDW(phys_addr);
+ mbox_cmd[3] = MSDW(phys_addr);
+ status = qla4xxx_mailbox_command(ha, 4, 1, &mbox_cmd[0], &mbox_sts[0]);
+ return status;
+}
+
+int qla4xxx_conn_close_sess_logout(struct scsi_qla_host * ha,
+ uint16_t fw_ddb_index,
+ uint16_t connection_id,
+ uint16_t option)
+{
+ uint32_t mbox_cmd[MBOX_REG_COUNT];
+ uint32_t mbox_sts[MBOX_REG_COUNT];
+
+ memset(&mbox_cmd, 0, sizeof(mbox_cmd));
+ memset(&mbox_sts, 0, sizeof(mbox_sts));
+ mbox_cmd[0] = MBOX_CMD_CONN_CLOSE_SESS_LOGOUT;
+ mbox_cmd[1] = fw_ddb_index;
+ mbox_cmd[2] = connection_id;
+ mbox_cmd[3] = LOGOUT_OPTION_RELOGIN;
+ if (qla4xxx_mailbox_command(ha, 4, 2, &mbox_cmd[0], &mbox_sts[0]) !=
+ QLA_SUCCESS) {
+ DEBUG2(printk("scsi%ld: %s: MBOX_CMD_CONN_CLOSE_SESS_LOGOUT "
+ "option %04x failed sts %04X %04X",
+ ha->host_no, __func__,
+ option, mbox_sts[0], mbox_sts[1]));
+ if (mbox_sts[0] == 0x4005)
+ DEBUG2(printk("%s reason %04X\n", __func__,
+ mbox_sts[1]));
+ }
+ return QLA_SUCCESS;
+}
+
+int qla4xxx_clear_database_entry(struct scsi_qla_host * ha,
+ uint16_t fw_ddb_index)
+{
+ uint32_t mbox_cmd[MBOX_REG_COUNT];
+ uint32_t mbox_sts[MBOX_REG_COUNT];
+
+ memset(&mbox_cmd, 0, sizeof(mbox_cmd));
+ memset(&mbox_sts, 0, sizeof(mbox_sts));
+ mbox_cmd[0] = MBOX_CMD_CLEAR_DATABASE_ENTRY;
+ mbox_cmd[1] = fw_ddb_index;
+ if (qla4xxx_mailbox_command(ha, 2, 5, &mbox_cmd[0], &mbox_sts[0]) !=
+ QLA_SUCCESS)
+ return QLA_ERROR;
+
+ return QLA_SUCCESS;
+}
+
+/**************************************************************************
+ * qla4xxx_initialize_fw_cb
+ * This routine initializes the firmware control block for the
+ * specified adapter.
+ *
+ * Input:
+ * ha - Pointer to host adapter structure.
+ *
+ * Returns:
+ * QLA_SUCCESS - Successfully initialized firmware ctrl block
+ * QLA_ERROR - Failed to initialize firmware ctrl block
+ **************************************************************************/
+int qla4xxx_initialize_fw_cb(struct scsi_qla_host * ha)
+{
+ struct init_fw_ctrl_blk *init_fw_cb;
+ dma_addr_t init_fw_cb_dma;
+ uint32_t mbox_cmd[MBOX_REG_COUNT];
+ uint32_t mbox_sts[MBOX_REG_COUNT];
+ int status = QLA_ERROR;
+
+ init_fw_cb = dma_alloc_coherent(&ha->pdev->dev,
+ sizeof(struct init_fw_ctrl_blk),
+ &init_fw_cb_dma, GFP_KERNEL);
+ if (init_fw_cb == NULL) {
+ DEBUG2(printk("scsi%ld: %s: Unable to alloc init_cb\n",
+ ha->host_no, __func__));
+ return 10;
+ }
+ memset(init_fw_cb, 0, sizeof(struct init_fw_ctrl_blk));
+
+ /* Get Initialize Firmware Control Block. */
+ memset(&mbox_cmd, 0, sizeof(mbox_cmd));
+ memset(&mbox_sts, 0, sizeof(mbox_sts));
+ mbox_cmd[0] = MBOX_CMD_GET_INIT_FW_CTRL_BLOCK;
+ mbox_cmd[2] = LSDW(init_fw_cb_dma);
+ mbox_cmd[3] = MSDW(init_fw_cb_dma);
+ if (qla4xxx_mailbox_command(ha, 4, 1, &mbox_cmd[0], &mbox_sts[0]) !=
+ QLA_SUCCESS) {
+ dma_free_coherent(&ha->pdev->dev,
+ sizeof(struct init_fw_ctrl_blk),
+ init_fw_cb, init_fw_cb_dma);
+ return status;
+ }
+
+ /* Initialize request and response queues. */
+ qla4xxx_init_rings(ha);
+
+ /* Fill in the request and response queue information. */
+ init_fw_cb->ReqQConsumerIndex = cpu_to_le16(ha->request_out);
+ init_fw_cb->ComplQProducerIndex = cpu_to_le16(ha->response_in);
+ init_fw_cb->ReqQLen = __constant_cpu_to_le16(REQUEST_QUEUE_DEPTH);
+ init_fw_cb->ComplQLen = __constant_cpu_to_le16(RESPONSE_QUEUE_DEPTH);
+ init_fw_cb->ReqQAddrLo = cpu_to_le32(LSDW(ha->request_dma));
+ init_fw_cb->ReqQAddrHi = cpu_to_le32(MSDW(ha->request_dma));
+ init_fw_cb->ComplQAddrLo = cpu_to_le32(LSDW(ha->response_dma));
+ init_fw_cb->ComplQAddrHi = cpu_to_le32(MSDW(ha->response_dma));
+ init_fw_cb->ShadowRegBufAddrLo =
+ cpu_to_le32(LSDW(ha->shadow_regs_dma));
+ init_fw_cb->ShadowRegBufAddrHi =
+ cpu_to_le32(MSDW(ha->shadow_regs_dma));
+
+ /* Set up required options. */
+ init_fw_cb->FwOptions |=
+ __constant_cpu_to_le16(FWOPT_SESSION_MODE |
+ FWOPT_INITIATOR_MODE);
+ init_fw_cb->FwOptions &= __constant_cpu_to_le16(~FWOPT_TARGET_MODE);
+
+ /* Save some info in adapter structure. */
+ ha->firmware_options = le16_to_cpu(init_fw_cb->FwOptions);
+ ha->tcp_options = le16_to_cpu(init_fw_cb->TCPOptions);
+ ha->heartbeat_interval = init_fw_cb->HeartbeatInterval;
+ ha->isns_server_port_number =
+ le16_to_cpu(init_fw_cb->iSNSServerPortNumber);
+ memcpy(ha->ip_address, init_fw_cb->IPAddr,
+ min(sizeof(ha->ip_address), sizeof(init_fw_cb->IPAddr)));
+ memcpy(ha->subnet_mask, init_fw_cb->SubnetMask,
+ min(sizeof(ha->subnet_mask), sizeof(init_fw_cb->SubnetMask)));
+ memcpy(ha->gateway, init_fw_cb->GatewayIPAddr,
+ min(sizeof(ha->gateway), sizeof(init_fw_cb->GatewayIPAddr)));
+ memcpy(ha->isns_ip_address, init_fw_cb->iSNSIPAddr,
+ min(sizeof(ha->isns_ip_address),
+ sizeof(init_fw_cb->iSNSIPAddr)));
+ memcpy(ha->name_string, init_fw_cb->iSCSINameString,
+ min(sizeof(ha->name_string),
+ sizeof(init_fw_cb->iSCSINameString)));
+ memcpy(ha->alias, init_fw_cb->Alias,
+ min(sizeof(ha->alias), sizeof(init_fw_cb->Alias)));
+
+ /* Save Command Line Paramater info */
+ ha->port_down_retry_count = le16_to_cpu(init_fw_cb->KeepAliveTimeout);
+ ha->discovery_wait = ql4xdiscoverywait;
+
+ /* Send Initialize Firmware Control Block. */
+ mbox_cmd[0] = MBOX_CMD_INITIALIZE_FIRMWARE;
+ mbox_cmd[1] = 0;
+ mbox_cmd[2] = LSDW(init_fw_cb_dma);
+ mbox_cmd[3] = MSDW(init_fw_cb_dma);
+ if (qla4xxx_mailbox_command(ha, 4, 1, &mbox_cmd[0], &mbox_sts[0]) ==
+ QLA_SUCCESS)
+ status = QLA_SUCCESS;
+ else {
+ DEBUG2(printk("scsi%ld: %s: MBOX_CMD_INITIALIZE_FIRMWARE "
+ "failed w/ status %04X\n", ha->host_no, __func__,
+ mbox_sts[0]));
+ }
+ dma_free_coherent(&ha->pdev->dev, sizeof(struct init_fw_ctrl_blk),
+ init_fw_cb, init_fw_cb_dma);
+
+ return status;
+}
+
+/**************************************************************************
+ * qla4xxx_get_dhcp_ip_address
+ * This routine retrieves the IP Address obtained via DHCP for the
+ * specified adapter.
+ *
+ * Input:
+ * ha - Pointer to host adapter structure.
+ *
+ * Returns:
+ * QLA_SUCCESS - Successfully obtained DHCP IP Address
+ * QLA_ERROR - Failed to obtained
+ **************************************************************************/
+int qla4xxx_get_dhcp_ip_address(struct scsi_qla_host * ha)
+{
+ struct init_fw_ctrl_blk *init_fw_cb;
+ dma_addr_t init_fw_cb_dma;
+ uint32_t mbox_cmd[MBOX_REG_COUNT];
+ uint32_t mbox_sts[MBOX_REG_COUNT];
+
+ init_fw_cb = dma_alloc_coherent(&ha->pdev->dev,
+ sizeof(struct init_fw_ctrl_blk),
+ &init_fw_cb_dma, GFP_KERNEL);
+ if (init_fw_cb == NULL) {
+ printk("scsi%ld: %s: Unable to alloc init_cb\n", ha->host_no,
+ __func__);
+ return 10;
+ }
+
+ /* Get Initialize Firmware Control Block. */
+ memset(&mbox_cmd, 0, sizeof(mbox_cmd));
+ memset(&mbox_sts, 0, sizeof(mbox_sts));
+ memset(init_fw_cb, 0, sizeof(struct init_fw_ctrl_blk));
+ mbox_cmd[0] = MBOX_CMD_GET_INIT_FW_CTRL_BLOCK;
+ mbox_cmd[2] = LSDW(init_fw_cb_dma);
+ mbox_cmd[3] = MSDW(init_fw_cb_dma);
+
+ if (qla4xxx_mailbox_command(ha, 4, 1, &mbox_cmd[0], &mbox_sts[0]) !=
+ QLA_SUCCESS) {
+ DEBUG2(printk("scsi%ld: %s: Failed to get init_fw_ctrl_blk\n",
+ ha->host_no, __func__));
+ dma_free_coherent(&ha->pdev->dev,
+ sizeof(struct init_fw_ctrl_blk),
+ init_fw_cb, init_fw_cb_dma);
+ return QLA_ERROR;
+ }
+
+ /* Save IP Address. */
+ memcpy(ha->ip_address, init_fw_cb->IPAddr,
+ min(sizeof(ha->ip_address), sizeof(init_fw_cb->IPAddr)));
+ memcpy(ha->subnet_mask, init_fw_cb->SubnetMask,
+ min(sizeof(ha->subnet_mask), sizeof(init_fw_cb->SubnetMask)));
+ memcpy(ha->gateway, init_fw_cb->GatewayIPAddr,
+ min(sizeof(ha->gateway), sizeof(init_fw_cb->GatewayIPAddr)));
+
+ dma_free_coherent(&ha->pdev->dev, sizeof(struct init_fw_ctrl_blk),
+ init_fw_cb, init_fw_cb_dma);
+
+ return QLA_SUCCESS;
+}
+
+/**************************************************************************
+ * qla4xxx_get_firmware_state
+ * This routine retrieves the firmware state for the specified adapter.
+ *
+ * Input:
+ * ha - Pointer to host adapter structure.
+ *
+ * Returns:
+ * QLA_SUCCESS - Successfully retrieved firmware state
+ * QLA_ERROR - Failed to retrieve firmware state
+ **************************************************************************/
+int qla4xxx_get_firmware_state(struct scsi_qla_host * ha)
+{
+ uint32_t mbox_cmd[MBOX_REG_COUNT];
+ uint32_t mbox_sts[MBOX_REG_COUNT];
+
+ /* Get firmware version */
+ memset(&mbox_cmd, 0, sizeof(mbox_cmd));
+ memset(&mbox_sts, 0, sizeof(mbox_sts));
+ mbox_cmd[0] = MBOX_CMD_GET_FW_STATE;
+ if (qla4xxx_mailbox_command(ha, 1, 4, &mbox_cmd[0], &mbox_sts[0]) !=
+ QLA_SUCCESS) {
+ DEBUG2(printk("scsi%ld: %s: MBOX_CMD_GET_FW_STATE failed w/ "
+ "status %04X\n", ha->host_no, __func__,
+ mbox_sts[0]));
+ return QLA_ERROR;
+ }
+ ha->firmware_state = mbox_sts[1];
+ ha->board_id = mbox_sts[2];
+ ha->addl_fw_state = mbox_sts[3];
+ DEBUG2(printk("scsi%ld: %s firmware_state=0x%x\n",
+ ha->host_no, __func__, ha->firmware_state);)
+
+ return QLA_SUCCESS;
+}
+
+/**************************************************************************
+ * qla4xxx_get_firmware_status
+ * This routine retrieves the firmware status for the specified adapter.
+ *
+ * Input:
+ * ha - Pointer to host adapter structure.
+ *
+ * Returns:
+ * QLA_SUCCESS - Successfully retrieved firmware status
+ * QLA_ERROR - Failed to retrieve firmware status
+ **************************************************************************/
+int qla4xxx_get_firmware_status(struct scsi_qla_host * ha)
+{
+ uint32_t mbox_cmd[MBOX_REG_COUNT];
+ uint32_t mbox_sts[MBOX_REG_COUNT];
+
+ /* Get firmware version */
+ memset(&mbox_cmd, 0, sizeof(mbox_cmd));
+ memset(&mbox_sts, 0, sizeof(mbox_sts));
+ mbox_cmd[0] = MBOX_CMD_GET_FW_STATUS;
+ if (qla4xxx_mailbox_command(ha, 1, 3, &mbox_cmd[0], &mbox_sts[0]) !=
+ QLA_SUCCESS) {
+ DEBUG2(printk("scsi%ld: %s: MBOX_CMD_GET_FW_STATUS failed w/ "
+ "status %04X\n", ha->host_no, __func__,
+ mbox_sts[0]));
+ return QLA_ERROR;
+ }
+
+ /* High-water mark of IOCBs */
+ ha->iocb_hiwat = mbox_sts[2];
+ if (ha->iocb_hiwat > IOCB_HIWAT_CUSHION)
+ ha->iocb_hiwat -= IOCB_HIWAT_CUSHION;
+ else
+ ql4_printk(KERN_INFO, ha, "WARNING!!! You have less than %d "
+ "firmare IOCBs available (%d).\n",
+ IOCB_HIWAT_CUSHION, ha->iocb_hiwat);
+
+ return QLA_SUCCESS;
+}
+
+/**************************************************************************
+ * qla4xxx_get_fwddb_entry
+ * This routine retrieves the firmware's device database entry.
+ *
+ * Input:
+ * ha - Pointer to host adapter structure.
+ * fw_ddb_index - Firmware's device database index
+ * fw_ddb_entry - Pointer to firmware's device database entry structure
+ * num_valid_ddb_entries - Pointer to number of valid ddb entries
+ * next_ddb_index - Pointer to next valid device database index
+ * fw_ddb_device_state - Pointer to device state
+ *
+ * Output:
+ * fw_ddb_entry - Fills in structure if pointer is supplied
+ * num_valid_ddb_entries - Fills in if pointer is supplied
+ * next_ddb_index - Fills in if pointer is supplied
+ * fw_ddb_device_state - Fills in if pointer is supplied
+ *
+ * Returns:
+ * QLA_SUCCESS - Successfully retrieved ddb info from firmware
+ * QLA_ERROR - Failed to retrieve ddb info from firmware
+ **************************************************************************/
+int qla4xxx_get_fwddb_entry(struct scsi_qla_host *ha,
+ uint16_t fw_ddb_index,
+ struct dev_db_entry *fw_ddb_entry,
+ dma_addr_t fw_ddb_entry_dma,
+ uint32_t *num_valid_ddb_entries,
+ uint32_t *next_ddb_index,
+ uint32_t *fw_ddb_device_state,
+ uint32_t *conn_err_detail,
+ uint16_t *tcp_source_port_num,
+ uint16_t *connection_id)
+{
+ int status = QLA_ERROR;
+ uint32_t mbox_cmd[MBOX_REG_COUNT];
+ uint32_t mbox_sts[MBOX_REG_COUNT];
+
+ /* Make sure the device index is valid */
+ if (fw_ddb_index >= MAX_DDB_ENTRIES) {
+ DEBUG2(printk("scsi%ld: %s: index [%d] out of range.\n",
+ ha->host_no, __func__, fw_ddb_index));
+ goto exit_get_fwddb;
+ }
+ memset(&mbox_cmd, 0, sizeof(mbox_cmd));
+ memset(&mbox_sts, 0, sizeof(mbox_sts));
+ mbox_cmd[0] = MBOX_CMD_GET_DATABASE_ENTRY;
+ mbox_cmd[1] = (uint32_t) fw_ddb_index;
+ mbox_cmd[2] = LSDW(fw_ddb_entry_dma);
+ mbox_cmd[3] = MSDW(fw_ddb_entry_dma);
+ if (qla4xxx_mailbox_command(ha, 4, 7, &mbox_cmd[0], &mbox_sts[0]) ==
+ QLA_ERROR) {
+ DEBUG2(printk("scsi%ld: %s: MBOX_CMD_GET_DATABASE_ENTRY failed"
+ " with status 0x%04X\n", ha->host_no, __func__,
+ mbox_sts[0]));
+ goto exit_get_fwddb;
+ }
+ if (fw_ddb_index != mbox_sts[1]) {
+ DEBUG2(printk("scsi%ld: %s: index mismatch [%d] != [%d].\n",
+ ha->host_no, __func__, fw_ddb_index,
+ mbox_sts[1]));
+ goto exit_get_fwddb;
+ }
+ if (fw_ddb_entry) {
+ ql4_printk(KERN_INFO, ha, "DDB[%d] MB0 %04x Tot %d Next %d "
+ "State %04x ConnErr %08x %d.%d.%d.%d:%04d \"%s\"\n",
+ fw_ddb_index, mbox_sts[0], mbox_sts[2], mbox_sts[3],
+ mbox_sts[4], mbox_sts[5], fw_ddb_entry->ipAddr[0],
+ fw_ddb_entry->ipAddr[1], fw_ddb_entry->ipAddr[2],
+ fw_ddb_entry->ipAddr[3],
+ le16_to_cpu(fw_ddb_entry->portNumber),
+ fw_ddb_entry->iscsiName);
+ }
+ if (num_valid_ddb_entries)
+ *num_valid_ddb_entries = mbox_sts[2];
+ if (next_ddb_index)
+ *next_ddb_index = mbox_sts[3];
+ if (fw_ddb_device_state)
+ *fw_ddb_device_state = mbox_sts[4];
+
+ /*
+ * RA: This mailbox has been changed to pass connection error and
+ * details. Its true for ISP4010 as per Version E - Not sure when it
+ * was changed. Get the time2wait from the fw_dd_entry field :
+ * default_time2wait which we call it as minTime2Wait DEV_DB_ENTRY
+ * struct.
+ */
+ if (conn_err_detail)
+ *conn_err_detail = mbox_sts[5];
+ if (tcp_source_port_num)
+ *tcp_source_port_num = (uint16_t) mbox_sts[6] >> 16;
+ if (connection_id)
+ *connection_id = (uint16_t) mbox_sts[6] & 0x00FF;
+ status = QLA_SUCCESS;
+
+exit_get_fwddb:
+ return status;
+}
+
+/**************************************************************************
+ * qla4xxx_set_fwddb_entry
+ * This routine initializes or updates the adapter's device database
+ * entry for the specified device.
+ *
+ * Input:
+ * ha - Pointer to host adapter structure.
+ * fw_ddb_index - Firmware's device database index
+ * fw_ddb_entry - Pointer to firmware's device database entry
+ * structure, or NULL.
+ *
+ * Output:
+ * None
+ *
+ * Remarks:
+ * This routine also triggers a login for the specified device.
+ * Therefore, it may also be used as a secondary login routine when
+ * a NULL pointer is specified for the fw_ddb_entry.
+ *
+ * Returns:
+ * QLA_SUCCESS - Successfully set ddb_entry in firmware
+ * QLA_ERROR - Failed to set ddb_entry in firmware
+ **************************************************************************/
+int qla4xxx_set_ddb_entry(struct scsi_qla_host * ha, uint16_t fw_ddb_index,
+ dma_addr_t fw_ddb_entry_dma)
+{
+ uint32_t mbox_cmd[MBOX_REG_COUNT];
+ uint32_t mbox_sts[MBOX_REG_COUNT];
+
+ /* Do not wait for completion. The firmware will send us an
+ * ASTS_DATABASE_CHANGED (0x8014) to notify us of the login status.
+ */
+ memset(&mbox_cmd, 0, sizeof(mbox_cmd));
+ memset(&mbox_sts, 0, sizeof(mbox_sts));
+
+ mbox_cmd[0] = MBOX_CMD_SET_DATABASE_ENTRY;
+ mbox_cmd[1] = (uint32_t) fw_ddb_index;
+ mbox_cmd[2] = LSDW(fw_ddb_entry_dma);
+ mbox_cmd[3] = MSDW(fw_ddb_entry_dma);
+ return qla4xxx_mailbox_command(ha, 4, 1, &mbox_cmd[0], &mbox_sts[0]);
+}
+
+int qla4xxx_conn_open_session_login(struct scsi_qla_host * ha,
+ uint16_t fw_ddb_index)
+{
+ int status = QLA_ERROR;
+ uint32_t mbox_cmd[MBOX_REG_COUNT];
+ uint32_t mbox_sts[MBOX_REG_COUNT];
+
+ /* Do not wait for completion. The firmware will send us an
+ * ASTS_DATABASE_CHANGED (0x8014) to notify us of the login status.
+ */
+ memset(&mbox_cmd, 0, sizeof(mbox_cmd));
+ memset(&mbox_sts, 0, sizeof(mbox_sts));
+ mbox_cmd[0] = MBOX_CMD_CONN_OPEN_SESS_LOGIN;
+ mbox_cmd[1] = (uint32_t) fw_ddb_index;
+ mbox_cmd[2] = 0;
+ mbox_cmd[3] = 0;
+ mbox_cmd[4] = 0;
+ status = qla4xxx_mailbox_command(ha, 4, 0, &mbox_cmd[0], &mbox_sts[0]);
+ DEBUG2(printk("%s fw_ddb_index=%d status=%d mbx0_1=0x%x :0x%x\n",
+ __func__, fw_ddb_index, status, mbox_sts[0],
+ mbox_sts[1]);)
+
+ return status;
+}
+
+/**************************************************************************
+ * qla4xxx_get_crash_record
+ * This routine retrieves a crash record from the QLA4010 after an
+ * 8002h aen.
+ *
+ * Input:
+ * ha - Pointer to host adapter structure.
+ *
+ * Returns:
+ * None
+ **************************************************************************/
+void qla4xxx_get_crash_record(struct scsi_qla_host * ha)
+{
+ uint32_t mbox_cmd[MBOX_REG_COUNT];
+ uint32_t mbox_sts[MBOX_REG_COUNT];
+ struct crash_record *crash_record = NULL;
+ dma_addr_t crash_record_dma = 0;
+ uint32_t crash_record_size = 0;
+ memset(&mbox_cmd, 0, sizeof(mbox_cmd));
+ memset(&mbox_sts, 0, sizeof(mbox_cmd));
+
+ /* Get size of crash record. */
+ mbox_cmd[0] = MBOX_CMD_GET_CRASH_RECORD;
+ if (qla4xxx_mailbox_command(ha, 5, 5, &mbox_cmd[0], &mbox_sts[0]) !=
+ QLA_SUCCESS) {
+ DEBUG2(printk("scsi%ld: %s: ERROR: Unable to retrieve size!\n",
+ ha->host_no, __func__));
+ goto exit_get_crash_record;
+ }
+ crash_record_size = mbox_sts[4];
+ if (crash_record_size == 0) {
+ DEBUG2(printk("scsi%ld: %s: ERROR: Crash record size is 0!\n",
+ ha->host_no, __func__));
+ goto exit_get_crash_record;
+ }
+
+ /* Alloc Memory for Crash Record. */
+ crash_record = dma_alloc_coherent(&ha->pdev->dev, crash_record_size,
+ &crash_record_dma, GFP_KERNEL);
+ if (crash_record == NULL)
+ goto exit_get_crash_record;
+
+ /* Get Crash Record. */
+ mbox_cmd[0] = MBOX_CMD_GET_CRASH_RECORD;
+ mbox_cmd[2] = LSDW(crash_record_dma);
+ mbox_cmd[3] = MSDW(crash_record_dma);
+ mbox_cmd[4] = crash_record_size;
+ if (qla4xxx_mailbox_command(ha, 5, 5, &mbox_cmd[0], &mbox_sts[0]) !=
+ QLA_SUCCESS)
+ goto exit_get_crash_record;
+
+ /* Dump Crash Record. */
+
+exit_get_crash_record:
+ if (crash_record)
+ dma_free_coherent(&ha->pdev->dev, crash_record_size,
+ crash_record, crash_record_dma);
+}
+
+/**************************************************************************
+ * qla4xxx_get_conn_event_log
+ * This routine retrieves the connection event log
+ *
+ * Input:
+ * ha - Pointer to host adapter structure.
+ *
+ * Returns:
+ * None
+ **************************************************************************/
+void qla4xxx_get_conn_event_log(struct scsi_qla_host * ha)
+{
+ uint32_t mbox_cmd[MBOX_REG_COUNT];
+ uint32_t mbox_sts[MBOX_REG_COUNT];
+ struct conn_event_log_entry *event_log = NULL;
+ dma_addr_t event_log_dma = 0;
+ uint32_t event_log_size = 0;
+ uint32_t num_valid_entries;
+ uint32_t oldest_entry = 0;
+ uint32_t max_event_log_entries;
+ uint8_t i;
+
+
+ memset(&mbox_cmd, 0, sizeof(mbox_cmd));
+ memset(&mbox_sts, 0, sizeof(mbox_cmd));
+
+ /* Get size of crash record. */
+ mbox_cmd[0] = MBOX_CMD_GET_CONN_EVENT_LOG;
+ if (qla4xxx_mailbox_command(ha, 4, 5, &mbox_cmd[0], &mbox_sts[0]) !=
+ QLA_SUCCESS)
+ goto exit_get_event_log;
+
+ event_log_size = mbox_sts[4];
+ if (event_log_size == 0)
+ goto exit_get_event_log;
+
+ /* Alloc Memory for Crash Record. */
+ event_log = dma_alloc_coherent(&ha->pdev->dev, event_log_size,
+ &event_log_dma, GFP_KERNEL);
+ if (event_log == NULL)
+ goto exit_get_event_log;
+
+ /* Get Crash Record. */
+ mbox_cmd[0] = MBOX_CMD_GET_CONN_EVENT_LOG;
+ mbox_cmd[2] = LSDW(event_log_dma);
+ mbox_cmd[3] = MSDW(event_log_dma);
+ if (qla4xxx_mailbox_command(ha, 4, 5, &mbox_cmd[0], &mbox_sts[0]) !=
+ QLA_SUCCESS) {
+ DEBUG2(printk("scsi%ld: %s: ERROR: Unable to retrieve event "
+ "log!\n", ha->host_no, __func__));
+ goto exit_get_event_log;
+ }
+
+ /* Dump Event Log. */
+ num_valid_entries = mbox_sts[1];
+
+ max_event_log_entries = event_log_size /
+ sizeof(struct conn_event_log_entry);
+
+ if (num_valid_entries > max_event_log_entries)
+ oldest_entry = num_valid_entries % max_event_log_entries;
+
+ DEBUG3(printk("scsi%ld: Connection Event Log Dump (%d entries):\n",
+ ha->host_no, num_valid_entries));
+
+ if (extended_error_logging == 3) {
+ if (oldest_entry == 0) {
+ /* Circular Buffer has not wrapped around */
+ for (i=0; i < num_valid_entries; i++) {
+ qla4xxx_dump_buffer((uint8_t *)event_log+
+ (i*sizeof(*event_log)),
+ sizeof(*event_log));
+ }
+ }
+ else {
+ /* Circular Buffer has wrapped around -
+ * display accordingly*/
+ for (i=oldest_entry; i < max_event_log_entries; i++) {
+ qla4xxx_dump_buffer((uint8_t *)event_log+
+ (i*sizeof(*event_log)),
+ sizeof(*event_log));
+ }
+ for (i=0; i < oldest_entry; i++) {
+ qla4xxx_dump_buffer((uint8_t *)event_log+
+ (i*sizeof(*event_log)),
+ sizeof(*event_log));
+ }
+ }
+ }
+
+exit_get_event_log:
+ if (event_log)
+ dma_free_coherent(&ha->pdev->dev, event_log_size, event_log,
+ event_log_dma);
+}
+
+/**************************************************************************
+ * qla4xxx_reset_lun
+ * This routine performs a LUN RESET on the specified target/lun.
+ *
+ * Input:
+ * ha - Pointer to host adapter structure.
+ * ddb_entry - Pointer to device database entry
+ * lun_entry - Pointer to lun entry structure
+ *
+ * Remarks:
+ * The caller must ensure that the ddb_entry and lun_entry pointers
+ * are valid before calling this routine.
+ *
+ * Returns:
+ * QLA_SUCCESS - lun reset completed successfully
+ * QLA_ERROR - lun reset failed
+ **************************************************************************/
+int qla4xxx_reset_lun(struct scsi_qla_host * ha, struct ddb_entry * ddb_entry,
+ int lun)
+{
+ uint32_t mbox_cmd[MBOX_REG_COUNT];
+ uint32_t mbox_sts[MBOX_REG_COUNT];
+ int status = QLA_SUCCESS;
+
+ DEBUG2(printk("scsi%ld:%d:%d: lun reset issued\n", ha->host_no,
+ ddb_entry->os_target_id, lun));
+
+ /*
+ * Send lun reset command to ISP, so that the ISP will return all
+ * outstanding requests with RESET status
+ */
+ memset(&mbox_cmd, 0, sizeof(mbox_cmd));
+ memset(&mbox_sts, 0, sizeof(mbox_sts));
+ mbox_cmd[0] = MBOX_CMD_LUN_RESET;
+ mbox_cmd[1] = ddb_entry->fw_ddb_index;
+ mbox_cmd[2] = lun << 8;
+ mbox_cmd[5] = 0x01; /* Immediate Command Enable */
+ qla4xxx_mailbox_command(ha, 6, 1, &mbox_cmd[0], &mbox_sts[0]);
+ if (mbox_sts[0] != MBOX_STS_COMMAND_COMPLETE &&
+ mbox_sts[0] != MBOX_STS_COMMAND_ERROR)
+ status = QLA_ERROR;
+
+ return status;
+}
+
+
+int qla4xxx_get_flash(struct scsi_qla_host * ha, dma_addr_t dma_addr,
+ uint32_t offset, uint32_t len)
+{
+ uint32_t mbox_cmd[MBOX_REG_COUNT];
+ uint32_t mbox_sts[MBOX_REG_COUNT];
+
+ memset(&mbox_cmd, 0, sizeof(mbox_cmd));
+ memset(&mbox_sts, 0, sizeof(mbox_sts));
+ mbox_cmd[0] = MBOX_CMD_READ_FLASH;
+ mbox_cmd[1] = LSDW(dma_addr);
+ mbox_cmd[2] = MSDW(dma_addr);
+ mbox_cmd[3] = offset;
+ mbox_cmd[4] = len;
+ if (qla4xxx_mailbox_command(ha, 5, 2, &mbox_cmd[0], &mbox_sts[0]) !=
+ QLA_SUCCESS) {
+ DEBUG2(printk("scsi%ld: %s: MBOX_CMD_READ_FLASH, failed w/ "
+ "status %04X %04X, offset %08x, len %08x\n", ha->host_no,
+ __func__, mbox_sts[0], mbox_sts[1], offset, len));
+ return QLA_ERROR;
+ }
+ return QLA_SUCCESS;
+}
+
+/**************************************************************************
+ * qla4xxx_get_fw_version
+ * This routine retrieves the firmware version for the specified adapter.
+ *
+ * Input:
+ * ha - Pointer to host adapter structure.
+ *
+ * Output:
+ * None
+ *
+ * Remarks:
+ * In QLA4010, mailboxes 2 & 3 may hold an address for data. Make sure
+ * that we write 0 to those mailboxes, if unused.
+ *
+ * Returns:
+ * QLA_SUCCESS - Successfully retrieved firmware version
+ * QLA_ERROR - Failed to retrieve firmware version
+ **************************************************************************/
+int qla4xxx_get_fw_version(struct scsi_qla_host * ha)
+{
+ uint32_t mbox_cmd[MBOX_REG_COUNT];
+ uint32_t mbox_sts[MBOX_REG_COUNT];
+
+ /* Get firmware version. */
+ memset(&mbox_cmd, 0, sizeof(mbox_cmd));
+ memset(&mbox_sts, 0, sizeof(mbox_sts));
+ mbox_cmd[0] = MBOX_CMD_ABOUT_FW;
+ if (qla4xxx_mailbox_command(ha, 4, 5, &mbox_cmd[0], &mbox_sts[0]) !=
+ QLA_SUCCESS) {
+ DEBUG2(printk("scsi%ld: %s: MBOX_CMD_ABOUT_FW failed w/ "
+ "status %04X\n", ha->host_no, __func__, mbox_sts[0]));
+ return QLA_ERROR;
+ }
+
+ /* Save firmware version information. */
+ ha->firmware_version[0] = mbox_sts[1];
+ ha->firmware_version[1] = mbox_sts[2];
+ ha->patch_number = mbox_sts[3];
+ ha->build_number = mbox_sts[4];
+
+ return QLA_SUCCESS;
+}
+
+int qla4xxx_get_default_ddb(struct scsi_qla_host *ha, dma_addr_t dma_addr)
+{
+ uint32_t mbox_cmd[MBOX_REG_COUNT];
+ uint32_t mbox_sts[MBOX_REG_COUNT];
+
+ memset(&mbox_cmd, 0, sizeof(mbox_cmd));
+ memset(&mbox_sts, 0, sizeof(mbox_sts));
+
+ mbox_cmd[0] = MBOX_CMD_GET_DATABASE_ENTRY_DEFAULTS;
+ mbox_cmd[2] = LSDW(dma_addr);
+ mbox_cmd[3] = MSDW(dma_addr);
+
+ if (qla4xxx_mailbox_command(ha, 4, 1, &mbox_cmd[0], &mbox_sts[0]) !=
+ QLA_SUCCESS) {
+ DEBUG2(printk("scsi%ld: %s: failed status %04X\n",
+ ha->host_no, __func__, mbox_sts[0]));
+ return QLA_ERROR;
+ }
+ return QLA_SUCCESS;
+}
+
+int qla4xxx_req_ddb_entry(struct scsi_qla_host *ha, uint32_t *ddb_index)
+{
+ uint32_t mbox_cmd[MBOX_REG_COUNT];
+ uint32_t mbox_sts[MBOX_REG_COUNT];
+
+ memset(&mbox_cmd, 0, sizeof(mbox_cmd));
+ memset(&mbox_sts, 0, sizeof(mbox_sts));
+
+ mbox_cmd[0] = MBOX_CMD_REQUEST_DATABASE_ENTRY;
+ mbox_cmd[1] = MAX_PRST_DEV_DB_ENTRIES;
+
+ if (qla4xxx_mailbox_command(ha, 2, 3, &mbox_cmd[0], &mbox_sts[0]) !=
+ QLA_SUCCESS) {
+ if (mbox_sts[0] == MBOX_STS_COMMAND_ERROR) {
+ *ddb_index = mbox_sts[2];
+ } else {
+ DEBUG2(printk("scsi%ld: %s: failed status %04X\n",
+ ha->host_no, __func__, mbox_sts[0]));
+ return QLA_ERROR;
+ }
+ } else {
+ *ddb_index = MAX_PRST_DEV_DB_ENTRIES;
+ }
+
+ return QLA_SUCCESS;
+}
+
+int qla4xxx_isns(struct scsi_qla_host *ha, uint32_t enable,
+ char *ip, uint16_t port, struct qla_isns_rsp *isns_rsp)
+{
+ uint32_t mbox_cmd[MBOX_REG_COUNT];
+ uint32_t mbox_sts[MBOX_REG_COUNT];
+
+ while (test_and_set_bit(AF_ISNS_CMD_IN_PROCESS, &ha->flags) &
+ AF_ISNS_CMD_IN_PROCESS) {
+ msleep(10);
+ }
+ /* Get firmware version. */
+ memset(&mbox_cmd, 0, sizeof(mbox_cmd));
+ memset(&mbox_sts, 0, sizeof(mbox_sts));
+
+ mbox_cmd[0] = MBOX_CMD_SET_ISNS_SERVICE;
+ if (enable) {
+ mbox_cmd[1] = ISNS_ENABLE;
+ } else {
+ mbox_cmd[1] = ISNS_DISABLE;
+ }
+ mbox_cmd[2] = *((uint32_t *)ip);
+ mbox_cmd[3] = port;
+
+ if (qla4xxx_mailbox_command(ha, 4, 6, &mbox_cmd[0], &mbox_sts[0])
+ != QLA_SUCCESS) {
+ DEBUG2(printk("scsi%ld: %s: MBOX_CMD_SET_ISNS_SERVICE failed "
+ "w/ status %04X %04X\n",
+ ha->host_no, __func__, mbox_sts[0],
+ mbox_sts[1]));
+ clear_bit(AF_ISNS_CMD_IN_PROCESS, &ha->flags);
+ return QLA_ERROR;
+ }
+
+ if (enable) {
+ if (mbox_cmd[0] == MBOX_STS_INTERMEDIATE_COMPLETION) {
+ /* wait for the AEN to complete the call */
+ while (test_bit(AF_ISNS_CMD_DONE, &ha->flags)) {
+ msleep(10);
+ }
+ clear_bit(AF_ISNS_CMD_DONE, &ha->flags);
+
+ memcpy(isns_rsp, &ha->isns_rsp,
+ sizeof (struct qla_isns_rsp));
+ } else {
+ isns_rsp->conn_id = (uint16_t)(mbox_sts[2] & 0xFFFF);
+ isns_rsp->scn_conn_id =
+ (uint16_t)(mbox_sts[3] & 0xFFFF);
+ isns_rsp->esi_conn_id =
+ (uint16_t)(mbox_sts[4] & 0xFFFF);
+
+ isns_rsp->conn_port = (uint16_t)(mbox_sts[2] >> 16);
+ isns_rsp->scn_port = (uint16_t)(mbox_sts[3] >> 16);
+ isns_rsp->esi_port = (uint16_t)(mbox_sts[4] >> 16);
+ }
+ }
+
+ clear_bit(AF_ISNS_CMD_IN_PROCESS, &ha->flags);
+
+ return QLA_SUCCESS;
+}
+
+int qla4xxx_send_tgts(struct scsi_qla_host *ha, char *ip, uint16_t port)
+{
+ struct dev_db_entry *fw_ddb_entry;
+ dma_addr_t fw_ddb_entry_dma;
+ uint32_t ddb_index;
+ int ret_val = QLA_SUCCESS;
+
+
+ fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev,
+ sizeof(*fw_ddb_entry),
+ &fw_ddb_entry_dma, GFP_KERNEL);
+ if (!fw_ddb_entry) {
+ DEBUG2(printk("scsi%ld: %s: Unable to allocate dma buffer.\n",
+ ha->host_no, __func__));
+ ret_val = QLA_ERROR;
+ goto qla4xxx_send_tgts_exit;
+ }
+
+ ret_val = qla4xxx_get_default_ddb(ha, fw_ddb_entry_dma);
+ if (ret_val != QLA_SUCCESS)
+ goto qla4xxx_send_tgts_exit;
+
+ ret_val = qla4xxx_req_ddb_entry(ha, &ddb_index);
+ if (ret_val != QLA_SUCCESS)
+ goto qla4xxx_send_tgts_exit;
+
+ memset((void *)fw_ddb_entry->iSCSIAlias, 0,
+ sizeof(fw_ddb_entry->iSCSIAlias));
+
+ memset((void *)fw_ddb_entry->iscsiName, 0,
+ sizeof(fw_ddb_entry->iscsiName));
+
+ memset((void *)fw_ddb_entry->ipAddr, 0, sizeof(fw_ddb_entry->ipAddr));
+ memset((void *)fw_ddb_entry->targetAddr, 0,
+ sizeof(fw_ddb_entry->targetAddr));
+
+ fw_ddb_entry->options = (DDB_OPT_DISC_SESSION | DDB_OPT_TARGET);
+ fw_ddb_entry->portNumber = cpu_to_le16(ntohs(port));
+
+ fw_ddb_entry->ipAddr[0] = *ip;
+ fw_ddb_entry->ipAddr[1] = *(ip + 1);
+ fw_ddb_entry->ipAddr[2] = *(ip + 2);
+ fw_ddb_entry->ipAddr[3] = *(ip + 3);
+
+ ret_val = qla4xxx_set_ddb_entry(ha, ddb_index, fw_ddb_entry_dma);
+
+qla4xxx_send_tgts_exit:
+ dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
+ fw_ddb_entry, fw_ddb_entry_dma);
+ return ret_val;
+}
+
^ permalink raw reply related [flat|nested] 7+ messages in thread
* [RFC] [PATCH 6/7] qla4xxx: driver support routines
2006-07-10 20:58 ` [RFC] [PATCH 5/7] qla4xxx: driver mailbox routines David Somayajulu
@ 2006-07-10 21:01 ` David Somayajulu
2006-07-10 21:02 ` [RFC] [PATCH 7/7] qla4xxx: driver version David Somayajulu
0 siblings, 1 reply; 7+ messages in thread
From: David Somayajulu @ 2006-07-10 21:01 UTC (permalink / raw)
To: linux-scsi
Cc: open-iscsi, David Wagner, Ravi Anand, Duane Grigsby,
David Somayajulu
qla4xxx driver support routines.
Signed-off-by: Ravi Anand <ravi.anand@qlogic.com>
Signed-off-by: David Somayajulu <david.somayajulu@qlogic.com>
Signed-off-by: Doug Maxey <dwm@bubba.enoyolf.org>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
---
diff --git a/drivers/scsi/qla4xxx/ql4_dbg.c b/drivers/scsi/qla4xxx/ql4_dbg.c
new file mode 100644
index 0000000..6e2902a
--- /dev/null
+++ b/drivers/scsi/qla4xxx/ql4_dbg.c
@@ -0,0 +1,215 @@
+/*
+ * QLogic iSCSI HBA Driver
+ * Copyright (c) 2003-2006 QLogic Corporation
+ *
+ * See LICENSE.qla4xxx for copyright and licensing details.
+ */
+
+#include "ql4_def.h"
+
+/*
+ * qla4xxx_print_srb_cmd
+ * This routine displays the SRB command
+ */
+static void qla4xxx_print_srb_info(struct srb * srb)
+{
+ printk("%s: srb = 0x%p, flags=0x%02x\n", __func__, srb, srb->flags);
+ printk("%s: cmd = 0x%p, saved_dma_handle = 0x%lx\n",
+ __func__, srb->cmd, (unsigned long) srb->dma_handle);
+ printk("%s: fw_ddb_index = %d, lun = %d\n",
+ __func__, srb->fw_ddb_index, srb->cmd->device->lun);
+ printk("%s: iocb_tov = %d\n",
+ __func__, srb->iocb_tov);
+ printk("%s: cc_stat = 0x%x, r_start = 0x%lx, u_start = 0x%lx\n\n",
+ __func__, srb->cc_stat, srb->r_start, srb->u_start);
+}
+
+/*
+ * qla4xxx_print_scsi_cmd
+ * This routine displays the SCSI command
+ */
+void qla4xxx_print_scsi_cmd(struct scsi_cmnd *cmd)
+{
+ int i;
+ printk("SCSI Command = 0x%p, Handle=0x%p\n", cmd, cmd->host_scribble);
+ printk(" b=%d, t=%02xh, l=%02xh, cmd_len = %02xh\n",
+ cmd->device->channel, cmd->device->id, cmd->device->lun,
+ cmd->cmd_len);
+ printk(" CDB = ");
+ for (i = 0; i < cmd->cmd_len; i++)
+ printk("%02x ", cmd->cmnd[i]);
+ printk(" seg_cnt = %d\n", cmd->use_sg);
+ printk(" request buffer = 0x%p, request buffer len = 0x%x\n",
+ cmd->request_buffer, cmd->request_bufflen);
+ if (cmd->use_sg) {
+ struct scatterlist *sg;
+ sg = (struct scatterlist *)cmd->request_buffer;
+ printk(" SG buffer: \n");
+ qla4xxx_dump_buffer((caddr_t) sg,
+ (cmd->use_sg * sizeof(*sg)));
+ }
+ printk(" tag = %d, transfersize = 0x%x \n", cmd->tag,
+ cmd->transfersize);
+ printk(" Pid = %d, SP = 0x%p\n", (int)cmd->pid, cmd->SCp.ptr);
+ printk(" underflow size = 0x%x, direction=0x%x\n", cmd->underflow,
+ cmd->sc_data_direction);
+ printk(" Current time (jiffies) = 0x%lx, "
+ "timeout expires = 0x%lx\n", jiffies, cmd->eh_timeout.expires);
+ qla4xxx_print_srb_info((struct srb *) cmd->SCp.ptr);
+}
+
+void __dump_registers(struct scsi_qla_host *ha)
+{
+ uint8_t i;
+ for (i = 0; i < MBOX_REG_COUNT; i++) {
+ printk(KERN_INFO "0x%02X mailbox[%d] = 0x%08X\n",
+ (uint8_t) offsetof(struct isp_reg, mailbox[i]), i,
+ readw(&ha->reg->mailbox[i]));
+ }
+ printk(KERN_INFO "0x%02X flash_address = 0x%08X\n",
+ (uint8_t) offsetof(struct isp_reg, flash_address),
+ readw(&ha->reg->flash_address));
+ printk(KERN_INFO "0x%02X flash_data = 0x%08X\n",
+ (uint8_t) offsetof(struct isp_reg, flash_data),
+ readw(&ha->reg->flash_data));
+ printk(KERN_INFO "0x%02X ctrl_status = 0x%08X\n",
+ (uint8_t) offsetof(struct isp_reg, ctrl_status),
+ readw(&ha->reg->ctrl_status));
+ if (is_qla4010(ha)) {
+ printk(KERN_INFO "0x%02X nvram = 0x%08X\n",
+ (uint8_t) offsetof(struct isp_reg, u1.isp4010.nvram),
+ readw(&ha->reg->u1.isp4010.nvram));
+ }
+
+ else if (is_qla4022(ha)) {
+ printk(KERN_INFO "0x%02X intr_mask = 0x%08X\n",
+ (uint8_t) offsetof(struct isp_reg,
+ u1.isp4022.intr_mask),
+ readw(&ha->reg->u1.isp4022.intr_mask));
+ printk(KERN_INFO "0x%02X nvram = 0x%08X\n",
+ (uint8_t) offsetof(struct isp_reg, u1.isp4022.nvram),
+ readw(&ha->reg->u1.isp4022.nvram));
+ printk(KERN_INFO "0x%02X semaphore = 0x%08X\n",
+ (uint8_t) offsetof(struct isp_reg,
+ u1.isp4022.semaphore),
+ readw(&ha->reg->u1.isp4022.semaphore));
+ }
+ printk(KERN_INFO "0x%02X req_q_in = 0x%08X\n",
+ (uint8_t) offsetof(struct isp_reg, req_q_in),
+ readw(&ha->reg->req_q_in));
+ printk(KERN_INFO "0x%02X rsp_q_out = 0x%08X\n",
+ (uint8_t) offsetof(struct isp_reg, rsp_q_out),
+ readw(&ha->reg->rsp_q_out));
+ if (is_qla4010(ha)) {
+ printk(KERN_INFO "0x%02X ext_hw_conf = 0x%08X\n",
+ (uint8_t) offsetof(struct isp_reg,
+ u2.isp4010.ext_hw_conf),
+ readw(&ha->reg->u2.isp4010.ext_hw_conf));
+ printk(KERN_INFO "0x%02X port_ctrl = 0x%08X\n",
+ (uint8_t) offsetof(struct isp_reg,
+ u2.isp4010.port_ctrl),
+ readw(&ha->reg->u2.isp4010.port_ctrl));
+ printk(KERN_INFO "0x%02X port_status = 0x%08X\n",
+ (uint8_t) offsetof(struct isp_reg,
+ u2.isp4010.port_status),
+ readw(&ha->reg->u2.isp4010.port_status));
+ printk(KERN_INFO "0x%02X req_q_out = 0x%08X\n",
+ (uint8_t) offsetof(struct isp_reg,
+ u2.isp4010.req_q_out),
+ readw(&ha->reg->u2.isp4010.req_q_out));
+ printk(KERN_INFO "0x%02X gp_out = 0x%08X\n",
+ (uint8_t) offsetof(struct isp_reg, u2.isp4010.gp_out),
+ readw(&ha->reg->u2.isp4010.gp_out));
+ printk(KERN_INFO "0x%02X gp_in = 0x%08X\n",
+ (uint8_t) offsetof(struct isp_reg, u2.isp4010.gp_in),
+ readw(&ha->reg->u2.isp4010.gp_in));
+ printk(KERN_INFO "0x%02X port_err_status = 0x%08X\n",
+ (uint8_t) offsetof(struct isp_reg,
+ u2.isp4010.port_err_status),
+ readw(&ha->reg->u2.isp4010.port_err_status));
+ }
+
+ else if (is_qla4022(ha)) {
+ printk(KERN_INFO "Page 0 Registers:\n");
+ printk(KERN_INFO "0x%02X ext_hw_conf = 0x%08X\n",
+ (uint8_t) offsetof(struct isp_reg,
+ u2.isp4022.p0.ext_hw_conf),
+ readw(&ha->reg->u2.isp4022.p0.ext_hw_conf));
+ printk(KERN_INFO "0x%02X port_ctrl = 0x%08X\n",
+ (uint8_t) offsetof(struct isp_reg,
+ u2.isp4022.p0.port_ctrl),
+ readw(&ha->reg->u2.isp4022.p0.port_ctrl));
+ printk(KERN_INFO "0x%02X port_status = 0x%08X\n",
+ (uint8_t) offsetof(struct isp_reg,
+ u2.isp4022.p0.port_status),
+ readw(&ha->reg->u2.isp4022.p0.port_status));
+ printk(KERN_INFO "0x%02X gp_out = 0x%08X\n",
+ (uint8_t) offsetof(struct isp_reg,
+ u2.isp4022.p0.gp_out),
+ readw(&ha->reg->u2.isp4022.p0.gp_out));
+ printk(KERN_INFO "0x%02X gp_in = 0x%08X\n",
+ (uint8_t) offsetof(struct isp_reg, u2.isp4022.p0.gp_in),
+ readw(&ha->reg->u2.isp4022.p0.gp_in));
+ printk(KERN_INFO "0x%02X port_err_status = 0x%08X\n",
+ (uint8_t) offsetof(struct isp_reg,
+ u2.isp4022.p0.port_err_status),
+ readw(&ha->reg->u2.isp4022.p0.port_err_status));
+ printk(KERN_INFO "Page 1 Registers:\n");
+ writel(HOST_MEM_CFG_PAGE & set_rmask(CSR_SCSI_PAGE_SELECT),
+ &ha->reg->ctrl_status);
+ printk(KERN_INFO "0x%02X req_q_out = 0x%08X\n",
+ (uint8_t) offsetof(struct isp_reg,
+ u2.isp4022.p1.req_q_out),
+ readw(&ha->reg->u2.isp4022.p1.req_q_out));
+ writel(PORT_CTRL_STAT_PAGE & set_rmask(CSR_SCSI_PAGE_SELECT),
+ &ha->reg->ctrl_status);
+ }
+}
+
+/*
+ * qla4xxx_dump_registers
+ * This routine displays ISP registers
+ *
+ * Input:
+ * ha - adapter structure pointer
+ *
+ */
+void qla4xxx_dump_mbox_registers(struct scsi_qla_host *ha)
+{
+ unsigned long flags = 0;
+ int i = 0;
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ for (i = 1; i < MBOX_REG_COUNT; i++)
+ printk(KERN_INFO " Mailbox[%d] = %08x\n", i,
+ readw(&ha->reg->mailbox[i]));
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+}
+
+void qla4xxx_dump_registers(struct scsi_qla_host *ha)
+{
+ unsigned long flags = 0;
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ __dump_registers(ha);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+}
+
+void qla4xxx_dump_buffer(void *b, uint32_t size)
+{
+ uint32_t cnt;
+ uint8_t *c = b;
+
+ printk(" 0 1 2 3 4 5 6 7 8 9 Ah Bh Ch Dh Eh "
+ "Fh\n");
+ printk("------------------------------------------------------------"
+ "--\n");
+ for (cnt = 0; cnt < size; cnt++, c++) {
+ printk(KERN_DEBUG "%02x", *c);
+ if (!(cnt % 16))
+ printk(KERN_DEBUG "\n");
+
+ else
+ printk(KERN_DEBUG " ");
+ }
+ if (cnt % 16)
+ printk(KERN_DEBUG "\n");
+}
diff --git a/drivers/scsi/qla4xxx/ql4_dbg.h b/drivers/scsi/qla4xxx/ql4_dbg.h
new file mode 100644
index 0000000..56ddc22
--- /dev/null
+++ b/drivers/scsi/qla4xxx/ql4_dbg.h
@@ -0,0 +1,55 @@
+/*
+ * QLogic iSCSI HBA Driver
+ * Copyright (c) 2003-2006 QLogic Corporation
+ *
+ * See LICENSE.qla4xxx for copyright and licensing details.
+ */
+
+/*
+ * Driver debug definitions.
+ */
+/* #define QL_DEBUG */ /* DEBUG messages */
+/* #define QL_DEBUG_LEVEL_3 */ /* Output function tracing */
+/* #define QL_DEBUG_LEVEL_4 */
+/* #define QL_DEBUG_LEVEL_5 */
+/* #define QL_DEBUG_LEVEL_9 */
+
+#define QL_DEBUG_LEVEL_2 /* ALways enable error messagess */
+#if defined(QL_DEBUG)
+#define DEBUG(x) do {x;} while (0);
+#else
+#define DEBUG(x) do {} while (0);
+#endif
+
+#if defined(QL_DEBUG_LEVEL_2)
+#define DEBUG2(x) do {if(extended_error_logging == 2) x;} while (0);
+#define DEBUG2_3(x) do {x;} while (0);
+#else /* */
+#define DEBUG2(x) do {} while (0);
+#endif /* */
+
+#if defined(QL_DEBUG_LEVEL_3)
+#define DEBUG3(x) do {if(extended_error_logging == 3) x;} while (0);
+#else /* */
+#define DEBUG3(x) do {} while (0);
+#if !defined(QL_DEBUG_LEVEL_2)
+#define DEBUG2_3(x) do {} while (0);
+#endif /* */
+#endif /* */
+#if defined(QL_DEBUG_LEVEL_4)
+#define DEBUG4(x) do {x;} while (0);
+#else /* */
+#define DEBUG4(x) do {} while (0);
+#endif /* */
+
+#if defined(QL_DEBUG_LEVEL_5)
+#define DEBUG5(x) do {x;} while (0);
+#else /* */
+#define DEBUG5(x) do {} while (0);
+#endif /* */
+
+#if defined(QL_DEBUG_LEVEL_9)
+#define DEBUG9(x) do {x;} while (0);
+#else /* */
+#define DEBUG9(x) do {} while (0);
+#endif /* */
diff --git a/drivers/scsi/qla4xxx/ql4_nvram.c b/drivers/scsi/qla4xxx/ql4_nvram.c
new file mode 100644
index 0000000..1f497e2
--- /dev/null
+++ b/drivers/scsi/qla4xxx/ql4_nvram.c
@@ -0,0 +1,223 @@
+/*
+ * QLogic iSCSI HBA Driver
+ * Copyright (c) 2003-2006 QLogic Corporation
+ *
+ * See LICENSE.qla4xxx for copyright and licensing details.
+ */
+
+#include "ql4_def.h"
+
+static inline int eeprom_size(struct scsi_qla_host *ha)
+{
+ return is_qla4022(ha) ? FM93C86A_SIZE_16 : FM93C66A_SIZE_16;
+}
+
+static inline int eeprom_no_addr_bits(struct scsi_qla_host *ha)
+{
+ return is_qla4022(ha) ? FM93C86A_NO_ADDR_BITS_16 :
+ FM93C56A_NO_ADDR_BITS_16;
+}
+
+static inline int eeprom_no_data_bits(struct scsi_qla_host *ha)
+{
+ return FM93C56A_DATA_BITS_16;
+}
+
+static int fm93c56a_select(struct scsi_qla_host * ha)
+{
+ DEBUG5(printk(KERN_ERR "fm93c56a_select:\n"));
+
+ ha->eeprom_cmd_data = AUBURN_EEPROM_CS_1 | 0x000f0000;
+ writel(ha->eeprom_cmd_data, isp_nvram(ha));
+ readl(isp_nvram(ha));
+ return 1;
+}
+
+static int fm93c56a_cmd(struct scsi_qla_host * ha, int cmd, int addr)
+{
+ int i;
+ int mask;
+ int dataBit;
+ int previousBit;
+
+ /* Clock in a zero, then do the start bit. */
+ writel(ha->eeprom_cmd_data | AUBURN_EEPROM_DO_1, isp_nvram(ha));
+ writel(ha->eeprom_cmd_data | AUBURN_EEPROM_DO_1 |
+ AUBURN_EEPROM_CLK_RISE, isp_nvram(ha));
+ writel(ha->eeprom_cmd_data | AUBURN_EEPROM_DO_1 |
+ AUBURN_EEPROM_CLK_FALL, isp_nvram(ha));
+ readl(isp_nvram(ha));
+ mask = 1 << (FM93C56A_CMD_BITS - 1);
+
+ /* Force the previous data bit to be different. */
+ previousBit = 0xffff;
+ for (i = 0; i < FM93C56A_CMD_BITS; i++) {
+ dataBit =
+ (cmd & mask) ? AUBURN_EEPROM_DO_1 : AUBURN_EEPROM_DO_0;
+ if (previousBit != dataBit) {
+
+ /*
+ * If the bit changed, then change the DO state to
+ * match.
+ */
+ writel(ha->eeprom_cmd_data | dataBit, isp_nvram(ha));
+ previousBit = dataBit;
+ }
+ writel(ha->eeprom_cmd_data | dataBit |
+ AUBURN_EEPROM_CLK_RISE, isp_nvram(ha));
+ writel(ha->eeprom_cmd_data | dataBit |
+ AUBURN_EEPROM_CLK_FALL, isp_nvram(ha));
+ readl(isp_nvram(ha));
+ cmd = cmd << 1;
+ }
+ mask = 1 << (eeprom_no_addr_bits(ha) - 1);
+
+ /* Force the previous data bit to be different. */
+ previousBit = 0xffff;
+ for (i = 0; i < eeprom_no_addr_bits(ha); i++) {
+ dataBit = addr & mask ? AUBURN_EEPROM_DO_1 :
+ AUBURN_EEPROM_DO_0;
+ if (previousBit != dataBit) {
+ /*
+ * If the bit changed, then change the DO state to
+ * match.
+ */
+ writel(ha->eeprom_cmd_data | dataBit, isp_nvram(ha));
+ previousBit = dataBit;
+ }
+ writel(ha->eeprom_cmd_data | dataBit |
+ AUBURN_EEPROM_CLK_RISE, isp_nvram(ha));
+ writel(ha->eeprom_cmd_data | dataBit |
+ AUBURN_EEPROM_CLK_FALL, isp_nvram(ha));
+ readl(isp_nvram(ha));
+ addr = addr << 1;
+ }
+ return 1;
+}
+
+static int fm93c56a_deselect(struct scsi_qla_host * ha)
+{
+ ha->eeprom_cmd_data = AUBURN_EEPROM_CS_0 | 0x000f0000;
+ writel(ha->eeprom_cmd_data, isp_nvram(ha));
+ readl(isp_nvram(ha));
+ return 1;
+}
+
+static int fm93c56a_datain(struct scsi_qla_host * ha, unsigned short *value)
+{
+ int i;
+ int data = 0;
+ int dataBit;
+
+ /* Read the data bits
+ * The first bit is a dummy. Clock right over it. */
+ for (i = 0; i < eeprom_no_data_bits(ha); i++) {
+ writel(ha->eeprom_cmd_data |
+ AUBURN_EEPROM_CLK_RISE, isp_nvram(ha));
+ writel(ha->eeprom_cmd_data |
+ AUBURN_EEPROM_CLK_FALL, isp_nvram(ha));
+ dataBit =
+ (readw(isp_nvram(ha)) & AUBURN_EEPROM_DI_1) ? 1 : 0;
+ data = (data << 1) | dataBit;
+ }
+
+ *value = data;
+ return 1;
+}
+
+static int eeprom_readword(int eepromAddr, u16 * value,
+ struct scsi_qla_host * ha)
+{
+ fm93c56a_select(ha);
+ fm93c56a_cmd(ha, FM93C56A_READ, eepromAddr);
+ fm93c56a_datain(ha, value);
+ fm93c56a_deselect(ha);
+ return 1;
+}
+
+/* Hardware_lock must be set before calling */
+u16 rd_nvram_word(struct scsi_qla_host * ha, int offset)
+{
+ u16 val;
+
+ /* NOTE: NVRAM uses half-word addresses */
+ eeprom_readword(offset, &val, ha);
+ return val;
+}
+
+int qla4xxx_is_nvram_configuration_valid(struct scsi_qla_host * ha)
+{
+ int status = QLA_ERROR;
+ uint16_t checksum = 0;
+ uint32_t index;
+ unsigned long flags;
+
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ for (index = 0; index < eeprom_size(ha); index++)
+ checksum += rd_nvram_word(ha, index);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+ if (checksum == 0)
+ status = QLA_SUCCESS;
+
+ return status;
+}
+
+/*************************************************************************
+ *
+ * Hardware Semaphore routines
+ *
+ *************************************************************************/
+int ql4xxx_sem_spinlock(struct scsi_qla_host * ha, u32 sem_mask, u32 sem_bits)
+{
+ uint32_t value;
+ unsigned long flags;
+
+ DEBUG2(printk("scsi%ld : Trying to get SEM lock - mask= 0x%x, code = "
+ "0x%x\n", ha->host_no, sem_mask, sem_bits));
+ while (1) {
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ writel((sem_mask | sem_bits), isp_semaphore(ha));
+ value = readw(isp_semaphore(ha));
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+ if ((value & (sem_mask >> 16)) == sem_bits) {
+ DEBUG2(printk("scsi%ld : Got SEM LOCK - mask= 0x%x, "
+ "code = 0x%x\n", ha->host_no,
+ sem_mask, sem_bits));
+ break;
+ }
+ msleep(100);
+ }
+ return 1;
+}
+
+void ql4xxx_sem_unlock(struct scsi_qla_host * ha, u32 sem_mask)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ writel(sem_mask, isp_semaphore(ha));
+ readl(isp_semaphore(ha));
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+ DEBUG2(printk("scsi%ld : UNLOCK SEM - mask= 0x%x\n", ha->host_no,
+ sem_mask));
+}
+
+int ql4xxx_sem_lock(struct scsi_qla_host * ha, u32 sem_mask, u32 sem_bits)
+{
+ uint32_t value;
+ unsigned long flags;
+
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ writel((sem_mask | sem_bits), isp_semaphore(ha));
+ value = readw(isp_semaphore(ha));
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+ if ((value & (sem_mask >> 16)) == sem_bits) {
+ DEBUG2(printk("scsi%ld : Got SEM LOCK - mask= 0x%x, code = "
+ "0x%x, sema code=0x%x\n", ha->host_no,
+ sem_mask, sem_bits, value));
+ return 1;
+ }
+ return 0;
+}
diff --git a/drivers/scsi/qla4xxx/ql4_nvram.h b/drivers/scsi/qla4xxx/ql4_nvram.h
new file mode 100644
index 0000000..08e2aed
--- /dev/null
+++ b/drivers/scsi/qla4xxx/ql4_nvram.h
@@ -0,0 +1,256 @@
+/*
+ * QLogic iSCSI HBA Driver
+ * Copyright (c) 2003-2006 QLogic Corporation
+ *
+ * See LICENSE.qla4xxx for copyright and licensing details.
+ */
+
+#ifndef _QL4XNVRM_H_
+#define _QL4XNVRM_H_
+
+/*
+ * AM29LV Flash definitions
+ */
+#define FM93C56A_SIZE_8 0x100
+#define FM93C56A_SIZE_16 0x80
+#define FM93C66A_SIZE_8 0x200
+#define FM93C66A_SIZE_16 0x100/* 4010 */
+#define FM93C86A_SIZE_16 0x400/* 4022 */
+
+#define FM93C56A_START 0x1
+
+// Commands
+#define FM93C56A_READ 0x2
+#define FM93C56A_WEN 0x0
+#define FM93C56A_WRITE 0x1
+#define FM93C56A_WRITE_ALL 0x0
+#define FM93C56A_WDS 0x0
+#define FM93C56A_ERASE 0x3
+#define FM93C56A_ERASE_ALL 0x0
+
+/* Command Extentions */
+#define FM93C56A_WEN_EXT 0x3
+#define FM93C56A_WRITE_ALL_EXT 0x1
+#define FM93C56A_WDS_EXT 0x0
+#define FM93C56A_ERASE_ALL_EXT 0x2
+
+/* Address Bits */
+#define FM93C56A_NO_ADDR_BITS_16 8 /* 4010 */
+#define FM93C56A_NO_ADDR_BITS_8 9 /* 4010 */
+#define FM93C86A_NO_ADDR_BITS_16 10 /* 4022 */
+
+/* Data Bits */
+#define FM93C56A_DATA_BITS_16 16
+#define FM93C56A_DATA_BITS_8 8
+
+/* Special Bits */
+#define FM93C56A_READ_DUMMY_BITS 1
+#define FM93C56A_READY 0
+#define FM93C56A_BUSY 1
+#define FM93C56A_CMD_BITS 2
+
+/* Auburn Bits */
+#define AUBURN_EEPROM_DI 0x8
+#define AUBURN_EEPROM_DI_0 0x0
+#define AUBURN_EEPROM_DI_1 0x8
+#define AUBURN_EEPROM_DO 0x4
+#define AUBURN_EEPROM_DO_0 0x0
+#define AUBURN_EEPROM_DO_1 0x4
+#define AUBURN_EEPROM_CS 0x2
+#define AUBURN_EEPROM_CS_0 0x0
+#define AUBURN_EEPROM_CS_1 0x2
+#define AUBURN_EEPROM_CLK_RISE 0x1
+#define AUBURN_EEPROM_CLK_FALL 0x0
+
+/* */
+/* EEPROM format */
+/* */
+struct bios_params {
+ uint16_t SpinUpDelay:1;
+ uint16_t BIOSDisable:1;
+ uint16_t MMAPEnable:1;
+ uint16_t BootEnable:1;
+ uint16_t Reserved0:12;
+ uint8_t bootID0:7;
+ uint8_t bootID0Valid:1;
+ uint8_t bootLUN0[8];
+ uint8_t bootID1:7;
+ uint8_t bootID1Valid:1;
+ uint8_t bootLUN1[8];
+ uint16_t MaxLunsPerTarget;
+ uint8_t Reserved1[10];
+};
+
+struct eeprom_port_cfg {
+
+ /* MTU MAC 0 */
+ u16 etherMtu_mac;
+
+ /* Flow Control MAC 0 */
+ u16 pauseThreshold_mac;
+ u16 resumeThreshold_mac;
+ u16 reserved[13];
+};
+
+struct eeprom_function_cfg {
+ u8 reserved[30];
+
+ /* MAC ADDR */
+ u8 macAddress[6];
+ u8 macAddressSecondary[6];
+ u16 subsysVendorId;
+ u16 subsysDeviceId;
+};
+
+struct eeprom_data {
+ union {
+ struct { /* isp4010 */
+ u8 asic_id[4]; /* x00 */
+ u8 version; /* x04 */
+ u8 reserved; /* x05 */
+ u16 board_id; /* x06 */
+#define EEPROM_BOARDID_ELDORADO 1
+#define EEPROM_BOARDID_PLACER 2
+
+#define EEPROM_SERIAL_NUM_SIZE 16
+ u8 serial_number[EEPROM_SERIAL_NUM_SIZE]; /* x08 */
+
+ /* ExtHwConfig: */
+ /* Offset = 24bytes
+ *
+ * | SSRAM Size| |ST|PD|SDRAM SZ| W| B| SP | |
+ * |15|14|13|12|11|10| 9| 8| 7| 6| 5| 4| 3| 2| 1| 0|
+ * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
+ */
+ u16 ext_hw_conf; /* x18 */
+ u8 mac0[6]; /* x1A */
+ u8 mac1[6]; /* x20 */
+ u8 mac2[6]; /* x26 */
+ u8 mac3[6]; /* x2C */
+ u16 etherMtu; /* x32 */
+ u16 macConfig; /* x34 */
+#define MAC_CONFIG_ENABLE_ANEG 0x0001
+#define MAC_CONFIG_ENABLE_PAUSE 0x0002
+ u16 phyConfig; /* x36 */
+#define PHY_CONFIG_PHY_ADDR_MASK 0x1f
+#define PHY_CONFIG_ENABLE_FW_MANAGEMENT_MASK 0x20
+ u16 topcat; /* x38 */
+#define TOPCAT_PRESENT 0x0100
+#define TOPCAT_MASK 0xFF00
+
+#define EEPROM_UNUSED_1_SIZE 2
+ u8 unused_1[EEPROM_UNUSED_1_SIZE]; /* x3A */
+ u16 bufletSize; /* x3C */
+ u16 bufletCount; /* x3E */
+ u16 bufletPauseThreshold; /* x40 */
+ u16 tcpWindowThreshold50; /* x42 */
+ u16 tcpWindowThreshold25; /* x44 */
+ u16 tcpWindowThreshold0; /* x46 */
+ u16 ipHashTableBaseHi; /* x48 */
+ u16 ipHashTableBaseLo; /* x4A */
+ u16 ipHashTableSize; /* x4C */
+ u16 tcpHashTableBaseHi; /* x4E */
+ u16 tcpHashTableBaseLo; /* x50 */
+ u16 tcpHashTableSize; /* x52 */
+ u16 ncbTableBaseHi; /* x54 */
+ u16 ncbTableBaseLo; /* x56 */
+ u16 ncbTableSize; /* x58 */
+ u16 drbTableBaseHi; /* x5A */
+ u16 drbTableBaseLo; /* x5C */
+ u16 drbTableSize; /* x5E */
+
+#define EEPROM_UNUSED_2_SIZE 4
+ u8 unused_2[EEPROM_UNUSED_2_SIZE]; /* x60 */
+ u16 ipReassemblyTimeout; /* x64 */
+ u16 tcpMaxWindowSizeHi; /* x66 */
+ u16 tcpMaxWindowSizeLo; /* x68 */
+ u32 net_ip_addr0; /* x6A Added for TOE
+ * functionality. */
+ u32 net_ip_addr1; /* x6E */
+ u32 scsi_ip_addr0; /* x72 */
+ u32 scsi_ip_addr1; /* x76 */
+#define EEPROM_UNUSED_3_SIZE 128 /* changed from 144 to account
+ * for ip addresses */
+ u8 unused_3[EEPROM_UNUSED_3_SIZE]; /* x7A */
+ u16 subsysVendorId_f0; /* xFA */
+ u16 subsysDeviceId_f0; /* xFC */
+
+ /* Address = 0x7F */
+#define FM93C56A_SIGNATURE 0x9356
+#define FM93C66A_SIGNATURE 0x9366
+ u16 signature; /* xFE */
+
+#define EEPROM_UNUSED_4_SIZE 250
+ u8 unused_4[EEPROM_UNUSED_4_SIZE]; /* x100 */
+ u16 subsysVendorId_f1; /* x1FA */
+ u16 subsysDeviceId_f1; /* x1FC */
+ u16 checksum; /* x1FE */
+ } __attribute__ ((packed)) isp4010;
+ struct { /* isp4022 */
+ u8 asicId[4]; /* x00 */
+ u8 version; /* x04 */
+ u8 reserved_5; /* x05 */
+ u16 boardId; /* x06 */
+ u8 boardIdStr[16]; /* x08 */
+ u8 serialNumber[16]; /* x18 */
+
+ /* External Hardware Configuration */
+ u16 ext_hw_conf; /* x28 */
+
+ /* MAC 0 CONFIGURATION */
+ struct eeprom_port_cfg macCfg_port0; /* x2A */
+
+ /* MAC 1 CONFIGURATION */
+ struct eeprom_port_cfg macCfg_port1; /* x4A */
+
+ /* DDR SDRAM Configuration */
+ u16 bufletSize; /* x6A */
+ u16 bufletCount; /* x6C */
+ u16 tcpWindowThreshold50; /* x6E */
+ u16 tcpWindowThreshold25; /* x70 */
+ u16 tcpWindowThreshold0; /* x72 */
+ u16 ipHashTableBaseHi; /* x74 */
+ u16 ipHashTableBaseLo; /* x76 */
+ u16 ipHashTableSize; /* x78 */
+ u16 tcpHashTableBaseHi; /* x7A */
+ u16 tcpHashTableBaseLo; /* x7C */
+ u16 tcpHashTableSize; /* x7E */
+ u16 ncbTableBaseHi; /* x80 */
+ u16 ncbTableBaseLo; /* x82 */
+ u16 ncbTableSize; /* x84 */
+ u16 drbTableBaseHi; /* x86 */
+ u16 drbTableBaseLo; /* x88 */
+ u16 drbTableSize; /* x8A */
+ u16 reserved_142[4]; /* x8C */
+
+ /* TCP/IP Parameters */
+ u16 ipReassemblyTimeout; /* x94 */
+ u16 tcpMaxWindowSize; /* x96 */
+ u16 ipSecurity; /* x98 */
+ u8 reserved_156[294]; /* x9A */
+ u16 qDebug[8]; /* QLOGIC USE ONLY x1C0 */
+ struct eeprom_function_cfg funcCfg_fn0; /* x1D0 */
+ u16 reserved_510; /* x1FE */
+
+ /* Address = 512 */
+ u8 oemSpace[432]; /* x200 */
+ struct bios_params sBIOSParams_fn1; /* x3B0 */
+ struct eeprom_function_cfg funcCfg_fn1; /* x3D0 */
+ u16 reserved_1022; /* x3FE */
+
+ /* Address = 1024 */
+ u8 reserved_1024[464]; /* x400 */
+ struct eeprom_function_cfg funcCfg_fn2; /* x5D0 */
+ u16 reserved_1534; /* x5FE */
+
+ /* Address = 1536 */
+ u8 reserved_1536[432]; /* x600 */
+ struct bios_params sBIOSParams_fn3; /* x7B0 */
+ struct eeprom_function_cfg funcCfg_fn3; /* x7D0 */
+ u16 checksum; /* x7FE */
+ } __attribute__ ((packed)) isp4022;
+ };
+};
+
+
+#endif /* _QL4XNVRM_H_ */
^ permalink raw reply related [flat|nested] 7+ messages in thread
* [RFC] [PATCH 7/7] qla4xxx: driver version
2006-07-10 21:01 ` [RFC] [PATCH 6/7] qla4xxx: driver support routines David Somayajulu
@ 2006-07-10 21:02 ` David Somayajulu
0 siblings, 0 replies; 7+ messages in thread
From: David Somayajulu @ 2006-07-10 21:02 UTC (permalink / raw)
To: linux-scsi
Cc: open-iscsi, David Wagner, Ravi Anand, Duane Grigsby,
David Somayajulu
qla4xxx driver version.
Signed-off-by: Ravi Anand <ravi.anand@qlogic.com>
Signed-off-by: David Somayajulu <david.somayajulu@qlogic.com>
Signed-off-by: Doug Maxey <dwm@bubba.enoyolf.org>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
---
diff --git a/drivers/scsi/qla4xxx/ql4_version.h b/drivers/scsi/qla4xxx/ql4_version.h
new file mode 100644
index 0000000..c230538
--- /dev/null
+++ b/drivers/scsi/qla4xxx/ql4_version.h
@@ -0,0 +1,13 @@
+/*
+ * QLogic iSCSI HBA Driver
+ * Copyright (c) 2003-2006 QLogic Corporation
+ *
+ * See LICENSE.qla4xxx for copyright and licensing details.
+ */
+
+#define QLA4XXX_DRIVER_VERSION "5.00.05b7-k"
+
+#define QL4_DRIVER_MAJOR_VER 5
+#define QL4_DRIVER_MINOR_VER 0
+#define QL4_DRIVER_PATCH_VER 5
+#define QL4_DRIVER_BETA_VER 7
^ permalink raw reply related [flat|nested] 7+ messages in thread
* RE: [RFC] [PATCH 7/7] qla4xxx: driver version
@ 2006-07-14 19:19 David Somayajulu
0 siblings, 0 replies; 7+ messages in thread
From: David Somayajulu @ 2006-07-14 19:19 UTC (permalink / raw)
To: linux-scsi; +Cc: David Somayajulu
Hi All,
Since I haven't seen any major feedback on the Patches 0 thru 7, is
there a possibility that the driver would make it into the 2.6.18
release. Also I would be available at OLS next week for any
clarifications.
Thanks
David Somayajulu
QLogic Corporation
^ permalink raw reply [flat|nested] 7+ messages in thread
end of thread, other threads:[~2006-07-14 19:19 UTC | newest]
Thread overview: 7+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2006-07-10 20:51 [RFC] [PATCH 2/7] qla4xxx: driver initialization routines David Somayajulu
2006-07-10 20:54 ` [RFC] [PATCH 3/7] qla4xxx: driver OS interface files David Somayajulu
2006-07-10 20:57 ` [RFC] [PATCH 4/7] qla4xxx: driver ISR routines David Somayajulu
2006-07-10 20:58 ` [RFC] [PATCH 5/7] qla4xxx: driver mailbox routines David Somayajulu
2006-07-10 21:01 ` [RFC] [PATCH 6/7] qla4xxx: driver support routines David Somayajulu
2006-07-10 21:02 ` [RFC] [PATCH 7/7] qla4xxx: driver version David Somayajulu
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2006-07-14 19:19 David Somayajulu
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