--- /dev/null
+/*
+ * QLogic Fibre Channel HBA Driver
+ * Copyright (c) 2003-2014 QLogic Corporation
+ *
+ * See LICENSE.qla2xxx for copyright and licensing details.
+ */
+#include "qla_def.h"
+#include "qla_gbl.h"
+#include "qla_target.h"
+
+#include <linux/moduleparam.h>
+#include <linux/vmalloc.h>
+#include <linux/slab.h>
+#include <linux/list.h>
+
+#include <scsi/scsi_tcq.h>
+#include <scsi/scsicam.h>
+#include <linux/delay.h>
+
+void
+qla2x00_vp_stop_timer(scsi_qla_host_t *vha)
+{
+ if (vha->vp_idx && vha->timer_active) {
+ del_timer_sync(&vha->timer);
+ vha->timer_active = 0;
+ }
+}
+
+static uint32_t
+qla24xx_allocate_vp_id(scsi_qla_host_t *vha)
+{
+ uint32_t vp_id;
+ struct qla_hw_data *ha = vha->hw;
+ unsigned long flags;
+
+ /* Find an empty slot and assign an vp_id */
+ mutex_lock(&ha->vport_lock);
+ vp_id = find_first_zero_bit(ha->vp_idx_map, ha->max_npiv_vports + 1);
+ if (vp_id > ha->max_npiv_vports) {
+ ql_dbg(ql_dbg_vport, vha, 0xa000,
+ "vp_id %d is bigger than max-supported %d.\n",
+ vp_id, ha->max_npiv_vports);
+ mutex_unlock(&ha->vport_lock);
+ return vp_id;
+ }
+
+ set_bit(vp_id, ha->vp_idx_map);
+ ha->num_vhosts++;
+ vha->vp_idx = vp_id;
+
+ spin_lock_irqsave(&ha->vport_slock, flags);
+ list_add_tail(&vha->list, &ha->vp_list);
+
+ qlt_update_vp_map(vha, SET_VP_IDX);
+
+ spin_unlock_irqrestore(&ha->vport_slock, flags);
+
+ mutex_unlock(&ha->vport_lock);
+ return vp_id;
+}
+
+void
+qla24xx_deallocate_vp_id(scsi_qla_host_t *vha)
+{
+ uint16_t vp_id;
+ struct qla_hw_data *ha = vha->hw;
+ unsigned long flags = 0;
+
+ mutex_lock(&ha->vport_lock);
+ /*
+ * Wait for all pending activities to finish before removing vport from
+ * the list.
+ * Lock needs to be held for safe removal from the list (it
+ * ensures no active vp_list traversal while the vport is removed
+ * from the queue)
+ */
+ spin_lock_irqsave(&ha->vport_slock, flags);
+ while (atomic_read(&vha->vref_count)) {
+ spin_unlock_irqrestore(&ha->vport_slock, flags);
+
+ msleep(500);
+
+ spin_lock_irqsave(&ha->vport_slock, flags);
+ }
+ list_del(&vha->list);
+ qlt_update_vp_map(vha, RESET_VP_IDX);
+ spin_unlock_irqrestore(&ha->vport_slock, flags);
+
+ vp_id = vha->vp_idx;
+ ha->num_vhosts--;
+ clear_bit(vp_id, ha->vp_idx_map);
+
+ mutex_unlock(&ha->vport_lock);
+}
+
+static scsi_qla_host_t *
+qla24xx_find_vhost_by_name(struct qla_hw_data *ha, uint8_t *port_name)
+{
+ scsi_qla_host_t *vha;
+ struct scsi_qla_host *tvha;
+ unsigned long flags;
+
+ spin_lock_irqsave(&ha->vport_slock, flags);
+ /* Locate matching device in database. */
+ list_for_each_entry_safe(vha, tvha, &ha->vp_list, list) {
+ if (!memcmp(port_name, vha->port_name, WWN_SIZE)) {
+ spin_unlock_irqrestore(&ha->vport_slock, flags);
+ return vha;
+ }
+ }
+ spin_unlock_irqrestore(&ha->vport_slock, flags);
+ return NULL;
+}
+
+/*
+ * qla2x00_mark_vp_devices_dead
+ * Updates fcport state when device goes offline.
+ *
+ * Input:
+ * ha = adapter block pointer.
+ * fcport = port structure pointer.
+ *
+ * Return:
+ * None.
+ *
+ * Context:
+ */
+static void
+qla2x00_mark_vp_devices_dead(scsi_qla_host_t *vha)
+{
+ /*
+ * !!! NOTE !!!
+ * This function, if called in contexts other than vp create, disable
+ * or delete, please make sure this is synchronized with the
+ * delete thread.
+ */
+ fc_port_t *fcport;
+
+ list_for_each_entry(fcport, &vha->vp_fcports, list) {
+ ql_dbg(ql_dbg_vport, vha, 0xa001,
+ "Marking port dead, loop_id=0x%04x : %x.\n",
+ fcport->loop_id, fcport->vha->vp_idx);
+
+ qla2x00_mark_device_lost(vha, fcport, 0, 0);
+ qla2x00_set_fcport_state(fcport, FCS_UNCONFIGURED);
+ }
+}
+
+int
+qla24xx_disable_vp(scsi_qla_host_t *vha)
+{
+ unsigned long flags;
+ int ret;
+
+ ret = qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL);
+ atomic_set(&vha->loop_state, LOOP_DOWN);
+ atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
+
+ /* Remove port id from vp target map */
+ spin_lock_irqsave(&vha->hw->vport_slock, flags);
+ qlt_update_vp_map(vha, RESET_AL_PA);
+ spin_unlock_irqrestore(&vha->hw->vport_slock, flags);
+
+ qla2x00_mark_vp_devices_dead(vha);
+ atomic_set(&vha->vp_state, VP_FAILED);
+ vha->flags.management_server_logged_in = 0;
+ if (ret == QLA_SUCCESS) {
+ fc_vport_set_state(vha->fc_vport, FC_VPORT_DISABLED);
+ } else {
+ fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
+ return -1;
+ }
+ return 0;
+}
+
+int
+qla24xx_enable_vp(scsi_qla_host_t *vha)
+{
+ int ret;
+ struct qla_hw_data *ha = vha->hw;
+ scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
+
+ /* Check if physical ha port is Up */
+ if (atomic_read(&base_vha->loop_state) == LOOP_DOWN ||
+ atomic_read(&base_vha->loop_state) == LOOP_DEAD ||
+ !(ha->current_topology & ISP_CFG_F)) {
+ vha->vp_err_state = VP_ERR_PORTDWN;
+ fc_vport_set_state(vha->fc_vport, FC_VPORT_LINKDOWN);
+ goto enable_failed;
+ }
+
+ /* Initialize the new vport unless it is a persistent port */
+ mutex_lock(&ha->vport_lock);
+ ret = qla24xx_modify_vp_config(vha);
+ mutex_unlock(&ha->vport_lock);
+
+ if (ret != QLA_SUCCESS) {
+ fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
+ goto enable_failed;
+ }
+
+ ql_dbg(ql_dbg_taskm, vha, 0x801a,
+ "Virtual port with id: %d - Enabled.\n", vha->vp_idx);
+ return 0;
+
+enable_failed:
+ ql_dbg(ql_dbg_taskm, vha, 0x801b,
+ "Virtual port with id: %d - Disabled.\n", vha->vp_idx);
+ return 1;
+}
+
+static void
+qla24xx_configure_vp(scsi_qla_host_t *vha)
+{
+ struct fc_vport *fc_vport;
+ int ret;
+
+ fc_vport = vha->fc_vport;
+
+ ql_dbg(ql_dbg_vport, vha, 0xa002,
+ "%s: change request #3.\n", __func__);
+ ret = qla2x00_send_change_request(vha, 0x3, vha->vp_idx);
+ if (ret != QLA_SUCCESS) {
+ ql_dbg(ql_dbg_vport, vha, 0xa003, "Failed to enable "
+ "receiving of RSCN requests: 0x%x.\n", ret);
+ return;
+ } else {
+ /* Corresponds to SCR enabled */
+ clear_bit(VP_SCR_NEEDED, &vha->vp_flags);
+ }
+
+ vha->flags.online = 1;
+ if (qla24xx_configure_vhba(vha))
+ return;
+
+ atomic_set(&vha->vp_state, VP_ACTIVE);
+ fc_vport_set_state(fc_vport, FC_VPORT_ACTIVE);
+}
+
+void
+qla2x00_alert_all_vps(struct rsp_que *rsp, uint16_t *mb)
+{
+ scsi_qla_host_t *vha;
+ struct qla_hw_data *ha = rsp->hw;
+ int i = 0;
+ unsigned long flags;
+
+ spin_lock_irqsave(&ha->vport_slock, flags);
+ list_for_each_entry(vha, &ha->vp_list, list) {
+ if (vha->vp_idx) {
+ atomic_inc(&vha->vref_count);
+ spin_unlock_irqrestore(&ha->vport_slock, flags);
+
+ switch (mb[0]) {
+ case MBA_LIP_OCCURRED:
+ case MBA_LOOP_UP:
+ case MBA_LOOP_DOWN:
+ case MBA_LIP_RESET:
+ case MBA_POINT_TO_POINT:
+ case MBA_CHG_IN_CONNECTION:
+ case MBA_PORT_UPDATE:
+ case MBA_RSCN_UPDATE:
+ ql_dbg(ql_dbg_async, vha, 0x5024,
+ "Async_event for VP[%d], mb=0x%x vha=%p.\n",
+ i, *mb, vha);
+ qla2x00_async_event(vha, rsp, mb);
+ break;
+ }
+
+ spin_lock_irqsave(&ha->vport_slock, flags);
+ atomic_dec(&vha->vref_count);
+ }
+ i++;
+ }
+ spin_unlock_irqrestore(&ha->vport_slock, flags);
+}
+
+int
+qla2x00_vp_abort_isp(scsi_qla_host_t *vha)
+{
+ /*
+ * Physical port will do most of the abort and recovery work. We can
+ * just treat it as a loop down
+ */
+ if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
+ atomic_set(&vha->loop_state, LOOP_DOWN);
+ qla2x00_mark_all_devices_lost(vha, 0);
+ } else {
+ if (!atomic_read(&vha->loop_down_timer))
+ atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
+ }
+
+ /*
+ * To exclusively reset vport, we need to log it out first. Note: this
+ * control_vp can fail if ISP reset is already issued, this is
+ * expected, as the vp would be already logged out due to ISP reset.
+ */
+ if (!test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags))
+ qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL);
+
+ ql_dbg(ql_dbg_taskm, vha, 0x801d,
+ "Scheduling enable of Vport %d.\n", vha->vp_idx);
+ return qla24xx_enable_vp(vha);
+}
+
+static int
+qla2x00_do_dpc_vp(scsi_qla_host_t *vha)
+{
+ struct qla_hw_data *ha = vha->hw;
+ scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
+
+ ql_dbg(ql_dbg_dpc + ql_dbg_verbose, vha, 0x4012,
+ "Entering %s vp_flags: 0x%lx.\n", __func__, vha->vp_flags);
+
+ qla2x00_do_work(vha);
+
+ /* Check if Fw is ready to configure VP first */
+ if (test_bit(VP_CONFIG_OK, &base_vha->vp_flags)) {
+ if (test_and_clear_bit(VP_IDX_ACQUIRED, &vha->vp_flags)) {
+ /* VP acquired. complete port configuration */
+ ql_dbg(ql_dbg_dpc, vha, 0x4014,
+ "Configure VP scheduled.\n");
+ qla24xx_configure_vp(vha);
+ ql_dbg(ql_dbg_dpc, vha, 0x4015,
+ "Configure VP end.\n");
+ return 0;
+ }
+ }
+
+ if (test_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags)) {
+ ql_dbg(ql_dbg_dpc, vha, 0x4016,
+ "FCPort update scheduled.\n");
+ qla2x00_update_fcports(vha);
+ clear_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags);
+ ql_dbg(ql_dbg_dpc, vha, 0x4017,
+ "FCPort update end.\n");
+ }
+
+ if ((test_and_clear_bit(RELOGIN_NEEDED, &vha->dpc_flags)) &&
+ !test_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags) &&
+ atomic_read(&vha->loop_state) != LOOP_DOWN) {
+
+ ql_dbg(ql_dbg_dpc, vha, 0x4018,
+ "Relogin needed scheduled.\n");
+ qla2x00_relogin(vha);
+ ql_dbg(ql_dbg_dpc, vha, 0x4019,
+ "Relogin needed end.\n");
+ }
+
+ if (test_and_clear_bit(RESET_MARKER_NEEDED, &vha->dpc_flags) &&
+ (!(test_and_set_bit(RESET_ACTIVE, &vha->dpc_flags)))) {
+ clear_bit(RESET_ACTIVE, &vha->dpc_flags);
+ }
+
+ if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags)) {
+ if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags))) {
+ ql_dbg(ql_dbg_dpc, vha, 0x401a,
+ "Loop resync scheduled.\n");
+ qla2x00_loop_resync(vha);
+ clear_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags);
+ ql_dbg(ql_dbg_dpc, vha, 0x401b,
+ "Loop resync end.\n");
+ }
+ }
+
+ ql_dbg(ql_dbg_dpc + ql_dbg_verbose, vha, 0x401c,
+ "Exiting %s.\n", __func__);
+ return 0;
+}
+
+void
+qla2x00_do_dpc_all_vps(scsi_qla_host_t *vha)
+{
+ int ret;
+ struct qla_hw_data *ha = vha->hw;
+ scsi_qla_host_t *vp;
+ unsigned long flags = 0;
+
+ if (vha->vp_idx)
+ return;
+ if (list_empty(&ha->vp_list))
+ return;
+
+ clear_bit(VP_DPC_NEEDED, &vha->dpc_flags);
+
+ if (!(ha->current_topology & ISP_CFG_F))
+ return;
+
+ spin_lock_irqsave(&ha->vport_slock, flags);
+ list_for_each_entry(vp, &ha->vp_list, list) {
+ if (vp->vp_idx) {
+ atomic_inc(&vp->vref_count);
+ spin_unlock_irqrestore(&ha->vport_slock, flags);
+
+ ret = qla2x00_do_dpc_vp(vp);
+
+ spin_lock_irqsave(&ha->vport_slock, flags);
+ atomic_dec(&vp->vref_count);
+ }
+ }
+ spin_unlock_irqrestore(&ha->vport_slock, flags);
+}
+
+int
+qla24xx_vport_create_req_sanity_check(struct fc_vport *fc_vport)
+{
+ scsi_qla_host_t *base_vha = shost_priv(fc_vport->shost);
+ struct qla_hw_data *ha = base_vha->hw;
+ scsi_qla_host_t *vha;
+ uint8_t port_name[WWN_SIZE];
+
+ if (fc_vport->roles != FC_PORT_ROLE_FCP_INITIATOR)
+ return VPCERR_UNSUPPORTED;
+
+ /* Check up the F/W and H/W support NPIV */
+ if (!ha->flags.npiv_supported)
+ return VPCERR_UNSUPPORTED;
+
+ /* Check up whether npiv supported switch presented */
+ if (!(ha->switch_cap & FLOGI_MID_SUPPORT))
+ return VPCERR_NO_FABRIC_SUPP;
+
+ /* Check up unique WWPN */
+ u64_to_wwn(fc_vport->port_name, port_name);
+ if (!memcmp(port_name, base_vha->port_name, WWN_SIZE))
+ return VPCERR_BAD_WWN;
+ vha = qla24xx_find_vhost_by_name(ha, port_name);
+ if (vha)
+ return VPCERR_BAD_WWN;
+
+ /* Check up max-npiv-supports */
+ if (ha->num_vhosts > ha->max_npiv_vports) {
+ ql_dbg(ql_dbg_vport, vha, 0xa004,
+ "num_vhosts %ud is bigger "
+ "than max_npiv_vports %ud.\n",
+ ha->num_vhosts, ha->max_npiv_vports);
+ return VPCERR_UNSUPPORTED;
+ }
+ return 0;
+}
+
+scsi_qla_host_t *
+qla24xx_create_vhost(struct fc_vport *fc_vport)
+{
+ scsi_qla_host_t *base_vha = shost_priv(fc_vport->shost);
+ struct qla_hw_data *ha = base_vha->hw;
+ scsi_qla_host_t *vha;
+ struct scsi_host_template *sht = &qla2xxx_driver_template;
+ struct Scsi_Host *host;
+
+ vha = qla2x00_create_host(sht, ha);
+ if (!vha) {
+ ql_log(ql_log_warn, vha, 0xa005,
+ "scsi_host_alloc() failed for vport.\n");
+ return(NULL);
+ }
+
+ host = vha->host;
+ fc_vport->dd_data = vha;
+ /* New host info */
+ u64_to_wwn(fc_vport->node_name, vha->node_name);
+ u64_to_wwn(fc_vport->port_name, vha->port_name);
+
+ vha->fc_vport = fc_vport;
+ vha->device_flags = 0;
+ vha->vp_idx = qla24xx_allocate_vp_id(vha);
+ if (vha->vp_idx > ha->max_npiv_vports) {
+ ql_dbg(ql_dbg_vport, vha, 0xa006,
+ "Couldn't allocate vp_id.\n");
+ goto create_vhost_failed;
+ }
+ vha->mgmt_svr_loop_id = 10 + vha->vp_idx;
+
+ vha->dpc_flags = 0L;
+
+ /*
+ * To fix the issue of processing a parent's RSCN for the vport before
+ * its SCR is complete.
+ */
+ set_bit(VP_SCR_NEEDED, &vha->vp_flags);
+ atomic_set(&vha->loop_state, LOOP_DOWN);
+ atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
+
+ qla2x00_start_timer(vha, qla2x00_timer, WATCH_INTERVAL);
+
+ vha->req = base_vha->req;
+ host->can_queue = base_vha->req->length + 128;
+ host->cmd_per_lun = 3;
+ if (IS_T10_PI_CAPABLE(ha) && ql2xenabledif)
+ host->max_cmd_len = 32;
+ else
+ host->max_cmd_len = MAX_CMDSZ;
+ host->max_channel = MAX_BUSES - 1;
+ host->max_lun = ql2xmaxlun;
+ host->unique_id = host->host_no;
+ host->max_id = ha->max_fibre_devices;
+ host->transportt = qla2xxx_transport_vport_template;
+
+ ql_dbg(ql_dbg_vport, vha, 0xa007,
+ "Detect vport hba %ld at address = %p.\n",
+ vha->host_no, vha);
+
+ vha->flags.init_done = 1;
+
+ mutex_lock(&ha->vport_lock);
+ set_bit(vha->vp_idx, ha->vp_idx_map);
+ ha->cur_vport_count++;
+ mutex_unlock(&ha->vport_lock);
+
+ return vha;
+
+create_vhost_failed:
+ return NULL;
+}
+
+static void
+qla25xx_free_req_que(struct scsi_qla_host *vha, struct req_que *req)
+{
+ struct qla_hw_data *ha = vha->hw;
+ uint16_t que_id = req->id;
+
+ dma_free_coherent(&ha->pdev->dev, (req->length + 1) *
+ sizeof(request_t), req->ring, req->dma);
+ req->ring = NULL;
+ req->dma = 0;
+ if (que_id) {
+ ha->req_q_map[que_id] = NULL;
+ mutex_lock(&ha->vport_lock);
+ clear_bit(que_id, ha->req_qid_map);
+ mutex_unlock(&ha->vport_lock);
+ }
+ kfree(req->outstanding_cmds);
+ kfree(req);
+ req = NULL;
+}
+
+static void
+qla25xx_free_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp)
+{
+ struct qla_hw_data *ha = vha->hw;
+ uint16_t que_id = rsp->id;
+
+ if (rsp->msix && rsp->msix->have_irq) {
+ free_irq(rsp->msix->vector, rsp);
+ rsp->msix->have_irq = 0;
+ rsp->msix->rsp = NULL;
+ }
+ dma_free_coherent(&ha->pdev->dev, (rsp->length + 1) *
+ sizeof(response_t), rsp->ring, rsp->dma);
+ rsp->ring = NULL;
+ rsp->dma = 0;
+ if (que_id) {
+ ha->rsp_q_map[que_id] = NULL;
+ mutex_lock(&ha->vport_lock);
+ clear_bit(que_id, ha->rsp_qid_map);
+ mutex_unlock(&ha->vport_lock);
+ }
+ kfree(rsp);
+ rsp = NULL;
+}
+
+int
+qla25xx_delete_req_que(struct scsi_qla_host *vha, struct req_que *req)
+{
+ int ret = -1;
+
+ if (req) {
+ req->options |= BIT_0;
+ ret = qla25xx_init_req_que(vha, req);
+ }
+ if (ret == QLA_SUCCESS)
+ qla25xx_free_req_que(vha, req);
+
+ return ret;
+}
+
+static int
+qla25xx_delete_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp)
+{
+ int ret = -1;
+
+ if (rsp) {
+ rsp->options |= BIT_0;
+ ret = qla25xx_init_rsp_que(vha, rsp);
+ }
+ if (ret == QLA_SUCCESS)
+ qla25xx_free_rsp_que(vha, rsp);
+
+ return ret;
+}
+
+/* Delete all queues for a given vhost */
+int
+qla25xx_delete_queues(struct scsi_qla_host *vha)
+{
+ int cnt, ret = 0;
+ struct req_que *req = NULL;
+ struct rsp_que *rsp = NULL;
+ struct qla_hw_data *ha = vha->hw;
+
+ /* Delete request queues */
+ for (cnt = 1; cnt < ha->max_req_queues; cnt++) {
+ req = ha->req_q_map[cnt];
+ if (req) {
+ ret = qla25xx_delete_req_que(vha, req);
+ if (ret != QLA_SUCCESS) {
+ ql_log(ql_log_warn, vha, 0x00ea,
+ "Couldn't delete req que %d.\n",
+ req->id);
+ return ret;
+ }
+ }
+ }
+
+ /* Delete response queues */
+ for (cnt = 1; cnt < ha->max_rsp_queues; cnt++) {
+ rsp = ha->rsp_q_map[cnt];
+ if (rsp) {
+ ret = qla25xx_delete_rsp_que(vha, rsp);
+ if (ret != QLA_SUCCESS) {
+ ql_log(ql_log_warn, vha, 0x00eb,
+ "Couldn't delete rsp que %d.\n",
+ rsp->id);
+ return ret;
+ }
+ }
+ }
+ return ret;
+}
+
+int
+qla25xx_create_req_que(struct qla_hw_data *ha, uint16_t options,
+ uint8_t vp_idx, uint16_t rid, int rsp_que, uint8_t qos)
+{
+ int ret = 0;
+ struct req_que *req = NULL;
+ struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
+ uint16_t que_id = 0;
+ device_reg_t *reg;
+ uint32_t cnt;
+
+ req = kzalloc(sizeof(struct req_que), GFP_KERNEL);
+ if (req == NULL) {
+ ql_log(ql_log_fatal, base_vha, 0x00d9,
+ "Failed to allocate memory for request queue.\n");
+ goto failed;
+ }
+
+ req->length = REQUEST_ENTRY_CNT_24XX;
+ req->ring = dma_alloc_coherent(&ha->pdev->dev,
+ (req->length + 1) * sizeof(request_t),
+ &req->dma, GFP_KERNEL);
+ if (req->ring == NULL) {
+ ql_log(ql_log_fatal, base_vha, 0x00da,
+ "Failed to allocate memory for request_ring.\n");
+ goto que_failed;
+ }
+
+ ret = qla2x00_alloc_outstanding_cmds(ha, req);
+ if (ret != QLA_SUCCESS)
+ goto que_failed;
+
+ mutex_lock(&ha->vport_lock);
+ que_id = find_first_zero_bit(ha->req_qid_map, ha->max_req_queues);
+ if (que_id >= ha->max_req_queues) {
+ mutex_unlock(&ha->vport_lock);
+ ql_log(ql_log_warn, base_vha, 0x00db,
+ "No resources to create additional request queue.\n");
+ goto que_failed;
+ }
+ set_bit(que_id, ha->req_qid_map);
+ ha->req_q_map[que_id] = req;
+ req->rid = rid;
+ req->vp_idx = vp_idx;
+ req->qos = qos;
+
+ ql_dbg(ql_dbg_multiq, base_vha, 0xc002,
+ "queue_id=%d rid=%d vp_idx=%d qos=%d.\n",
+ que_id, req->rid, req->vp_idx, req->qos);
+ ql_dbg(ql_dbg_init, base_vha, 0x00dc,
+ "queue_id=%d rid=%d vp_idx=%d qos=%d.\n",
+ que_id, req->rid, req->vp_idx, req->qos);
+ if (rsp_que < 0)
+ req->rsp = NULL;
+ else
+ req->rsp = ha->rsp_q_map[rsp_que];
+ /* Use alternate PCI bus number */
+ if (MSB(req->rid))
+ options |= BIT_4;
+ /* Use alternate PCI devfn */
+ if (LSB(req->rid))
+ options |= BIT_5;
+ req->options = options;
+
+ ql_dbg(ql_dbg_multiq, base_vha, 0xc003,
+ "options=0x%x.\n", req->options);
+ ql_dbg(ql_dbg_init, base_vha, 0x00dd,
+ "options=0x%x.\n", req->options);
+ for (cnt = 1; cnt < req->num_outstanding_cmds; cnt++)
+ req->outstanding_cmds[cnt] = NULL;
+ req->current_outstanding_cmd = 1;
+
+ req->ring_ptr = req->ring;
+ req->ring_index = 0;
+ req->cnt = req->length;
+ req->id = que_id;
+ reg = ISP_QUE_REG(ha, que_id);
+ req->req_q_in = ®->isp25mq.req_q_in;
+ req->req_q_out = ®->isp25mq.req_q_out;
+ req->max_q_depth = ha->req_q_map[0]->max_q_depth;
+ req->out_ptr = (void *)(req->ring + req->length);
+ mutex_unlock(&ha->vport_lock);
+ ql_dbg(ql_dbg_multiq, base_vha, 0xc004,
+ "ring_ptr=%p ring_index=%d, "
+ "cnt=%d id=%d max_q_depth=%d.\n",
+ req->ring_ptr, req->ring_index,
+ req->cnt, req->id, req->max_q_depth);
+ ql_dbg(ql_dbg_init, base_vha, 0x00de,
+ "ring_ptr=%p ring_index=%d, "
+ "cnt=%d id=%d max_q_depth=%d.\n",
+ req->ring_ptr, req->ring_index, req->cnt,
+ req->id, req->max_q_depth);
+
+ ret = qla25xx_init_req_que(base_vha, req);
+ if (ret != QLA_SUCCESS) {
+ ql_log(ql_log_fatal, base_vha, 0x00df,
+ "%s failed.\n", __func__);
+ mutex_lock(&ha->vport_lock);
+ clear_bit(que_id, ha->req_qid_map);
+ mutex_unlock(&ha->vport_lock);
+ goto que_failed;
+ }
+
+ return req->id;
+
+que_failed:
+ qla25xx_free_req_que(base_vha, req);
+failed:
+ return 0;
+}
+
+static void qla_do_work(struct work_struct *work)
+{
+ unsigned long flags;
+ struct rsp_que *rsp = container_of(work, struct rsp_que, q_work);
+ struct scsi_qla_host *vha;
+ struct qla_hw_data *ha = rsp->hw;
+
+ spin_lock_irqsave(&rsp->hw->hardware_lock, flags);
+ vha = pci_get_drvdata(ha->pdev);
+ qla24xx_process_response_queue(vha, rsp);
+ spin_unlock_irqrestore(&rsp->hw->hardware_lock, flags);
+}
+
+/* create response queue */
+int
+qla25xx_create_rsp_que(struct qla_hw_data *ha, uint16_t options,
+ uint8_t vp_idx, uint16_t rid, int req)
+{
+ int ret = 0;
+ struct rsp_que *rsp = NULL;
+ struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
+ uint16_t que_id = 0;
+ device_reg_t *reg;
+
+ rsp = kzalloc(sizeof(struct rsp_que), GFP_KERNEL);
+ if (rsp == NULL) {
+ ql_log(ql_log_warn, base_vha, 0x0066,
+ "Failed to allocate memory for response queue.\n");
+ goto failed;
+ }
+
+ rsp->length = RESPONSE_ENTRY_CNT_MQ;
+ rsp->ring = dma_alloc_coherent(&ha->pdev->dev,
+ (rsp->length + 1) * sizeof(response_t),
+ &rsp->dma, GFP_KERNEL);
+ if (rsp->ring == NULL) {
+ ql_log(ql_log_warn, base_vha, 0x00e1,
+ "Failed to allocate memory for response ring.\n");
+ goto que_failed;
+ }
+
+ mutex_lock(&ha->vport_lock);
+ que_id = find_first_zero_bit(ha->rsp_qid_map, ha->max_rsp_queues);
+ if (que_id >= ha->max_rsp_queues) {
+ mutex_unlock(&ha->vport_lock);
+ ql_log(ql_log_warn, base_vha, 0x00e2,
+ "No resources to create additional request queue.\n");
+ goto que_failed;
+ }
+ set_bit(que_id, ha->rsp_qid_map);
+
+ if (ha->flags.msix_enabled)
+ rsp->msix = &ha->msix_entries[que_id + 1];
+ else
+ ql_log(ql_log_warn, base_vha, 0x00e3,
+ "MSIX not enabled.\n");
+
+ ha->rsp_q_map[que_id] = rsp;
+ rsp->rid = rid;
+ rsp->vp_idx = vp_idx;
+ rsp->hw = ha;
+ ql_dbg(ql_dbg_init, base_vha, 0x00e4,
+ "queue_id=%d rid=%d vp_idx=%d hw=%p.\n",
+ que_id, rsp->rid, rsp->vp_idx, rsp->hw);
+ /* Use alternate PCI bus number */
+ if (MSB(rsp->rid))
+ options |= BIT_4;
+ /* Use alternate PCI devfn */
+ if (LSB(rsp->rid))
+ options |= BIT_5;
+ /* Enable MSIX handshake mode on for uncapable adapters */
+ if (!IS_MSIX_NACK_CAPABLE(ha))
+ options |= BIT_6;
+
+ rsp->options = options;
+ rsp->id = que_id;
+ reg = ISP_QUE_REG(ha, que_id);
+ rsp->rsp_q_in = ®->isp25mq.rsp_q_in;
+ rsp->rsp_q_out = ®->isp25mq.rsp_q_out;
+ rsp->in_ptr = (void *)(rsp->ring + rsp->length);
+ mutex_unlock(&ha->vport_lock);
+ ql_dbg(ql_dbg_multiq, base_vha, 0xc00b,
+ "options=%x id=%d rsp_q_in=%p rsp_q_out=%p",
+ rsp->options, rsp->id, rsp->rsp_q_in,
+ rsp->rsp_q_out);
+ ql_dbg(ql_dbg_init, base_vha, 0x00e5,
+ "options=%x id=%d rsp_q_in=%p rsp_q_out=%p",
+ rsp->options, rsp->id, rsp->rsp_q_in,
+ rsp->rsp_q_out);
+
+ ret = qla25xx_request_irq(rsp);
+ if (ret)
+ goto que_failed;
+
+ ret = qla25xx_init_rsp_que(base_vha, rsp);
+ if (ret != QLA_SUCCESS) {
+ ql_log(ql_log_fatal, base_vha, 0x00e7,
+ "%s failed.\n", __func__);
+ mutex_lock(&ha->vport_lock);
+ clear_bit(que_id, ha->rsp_qid_map);
+ mutex_unlock(&ha->vport_lock);
+ goto que_failed;
+ }
+ if (req >= 0)
+ rsp->req = ha->req_q_map[req];
+ else
+ rsp->req = NULL;
+
+ qla2x00_init_response_q_entries(rsp);
+ if (rsp->hw->wq)
+ INIT_WORK(&rsp->q_work, qla_do_work);
+ return rsp->id;
+
+que_failed:
+ qla25xx_free_rsp_que(base_vha, rsp);
+failed:
+ return 0;
+}
Code Review / kvmfornfv.git / blobdiff