// SPDX-License-Identifier: GPL-2.0-only
/*
* QLogic Fibre Channel HBA Driver
* Copyright (c) 2003-2014 QLogic Corporation
*/
#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);
spin_unlock_irqrestore(&ha->vport_slock, flags);
spin_lock_irqsave(&ha->hardware_lock, flags);
qla_update_vp_map(vha, SET_VP_IDX);
spin_unlock_irqrestore(&ha->hardware_lock, 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;
u32 i, bailout;
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)
*/
bailout = 0;
for (i = 0; i < 500; i++) {
spin_lock_irqsave(&ha->vport_slock, flags);
if (atomic_read(&vha->vref_count) == 0) {
list_del(&vha->list);
qla_update_vp_map(vha, RESET_VP_IDX);
bailout = 1;
}
spin_unlock_irqrestore(&ha->vport_slock, flags);
if (bailout)
break;
else
msleep(20);
}
if (!bailout) {
ql_log(ql_log_info, vha, 0xfffa,
"vha->vref_count=%u timeout\n", vha->vref_count.counter);
spin_lock_irqsave(&ha->vport_slock, flags);
list_del(&vha->list);
qla_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);
qla2x00_set_fcport_state(fcport, FCS_UNCONFIGURED);
}
}
int
qla24xx_disable_vp(scsi_qla_host_t *vha)
{
unsigned long flags;
int ret = QLA_SUCCESS;
fc_port_t *fcport;
if (vha->hw->flags.edif_enabled) {
if (DBELL_ACTIVE(vha))
qla2x00_post_aen_work(vha, FCH_EVT_VENDOR_UNIQUE,
FCH_EVT_VENDOR_UNIQUE_VPORT_DOWN);
/* delete sessions and flush sa_indexes */
qla2x00_wait_for_sess_deletion(vha);
}
if (vha->hw->flags.fw_started)
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);
list_for_each_entry(fcport, &vha->vp_fcports, list)
fcport->logout_on_delete = 1;
if (!vha->hw->flags.edif_enabled)
qla2x00_wait_for_sess_deletion(vha);
/* Remove port id from vp target map */
spin_lock_irqsave(&vha->hw->hardware_lock, flags);
qla_update_vp_map(vha, RESET_AL_PA);
spin_unlock_irqrestore(&vha->hw->hardware_lock, 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);
ql_dbg(ql_dbg_taskm, vha, 0x800b,
"%s skip enable. loop_state %x topo %x\n",
__func__, base_vha->loop_state.counter,
ha->current_topology);
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, *tvp;
struct qla_hw_data *ha = rsp->hw;
int i = 0;
unsigned long flags;
spin_lock_irqsave(&ha->vport_slock, flags);
list_for_each_entry_safe(vha, tvp, &ha->vp_list, list) {
if (vha->vp_idx) {
if (test_bit(VPORT_DELETE, &vha->dpc_flags))
continue;
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:
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;
case MBA_PORT_UPDATE:
case MBA_RSCN_UPDATE:
if ((mb[3] & 0xff) == vha->vp_idx) {
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);
wake_up(&vha->vref_waitq);
}
i++;
}
spin_unlock_irqrestore(&ha->vport_slock, flags);
}
int
qla2x00_vp_abort_isp(scsi_qla_host_t *vha)
{
fc_port_t *fcport;
/*
* 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);
list_for_each_entry(fcport, &vha->vp_fcports, list)
fcport->logout_on_delete = 0;
}
/*
* 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);
} else {
if (!atomic_read(&vha->loop_down_timer))
atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
}
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);
/* 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(PROCESS_PUREX_IOCB, &vha->dpc_flags)) {
if (atomic_read(&vha->loop_state) == LOOP_READY) {
qla24xx_process_purex_list(&vha->purex_list);
clear_bit(PROCESS_PUREX_IOCB, &vha->dpc_flags);
}
}
if (test_bit(RELOGIN_NEEDED, &vha->dpc_flags) &&
!test_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags) &&
atomic_read(&vha->loop_state) != LOOP_DOWN) {
if (!vha->relogin_jif ||
time_after_eq(jiffies, vha->relogin_jif)) {
vha->relogin_jif = jiffies + HZ;
clear_bit(RELOGIN_NEEDED, &vha->dpc_flags);
ql_dbg(ql_dbg_dpc, vha, 0x4018,
"Relogin needed scheduled.\n");
qla24xx_post_relogin_work(vha);
}
}
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)
{
struct qla_hw_data *ha = vha->hw;
scsi_qla_host_t *vp, *tvp;
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_safe(vp, tvp, &ha->vp_list, list) {
if (vp->vp_idx) {
atomic_inc(&vp->vref_count);
spin_unlock_irqrestore(&ha->vport_slock, flags);
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;
const 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 = qla2x00_reserve_mgmt_server_loop_id(vha);
vha->dpc_flags = 0L;
ha->dpc_active = 0;
set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags);
set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags);
/*
* 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, WATCH_INTERVAL);
vha->req = base_vha->req;
vha->flags.nvme_enabled = base_vha->flags.nvme_enabled;
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);
}
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->msix->handle);
rsp->msix->have_irq = 0;
rsp->msix->in_use = 0;
rsp->msix->handle = 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);
}
int
qla25xx_delete_req_que(struct scsi_qla_host *vha, struct req_que *req)
{
int ret = QLA_SUCCESS;
if (req && vha->flags.qpairs_req_created) {
req->options |= BIT_0;
ret = qla25xx_init_req_que(vha, req);
if (ret != QLA_SUCCESS)
return QLA_FUNCTION_FAILED;
qla25xx_free_req_que(vha, req);
}
return ret;
}
int
qla25xx_delete_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp)
{
int ret = QLA_SUCCESS;
if (rsp && vha->flags.qpairs_rsp_created) {
rsp->options |= BIT_0;
ret = qla25xx_init_rsp_que(vha, rsp);
if (ret != QLA_SUCCESS)
return QLA_FUNCTION_FAILED;
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;
struct qla_qpair *qpair, *tqpair;
if (ql2xmqsupport || ql2xnvmeenable) {
list_for_each_entry_safe(qpair, tqpair, &vha->qp_list,
qp_list_elem)
qla2xxx_delete_qpair(vha, qpair);
} else {
/* Delete request queues */
for (cnt = 1; cnt < ha->max_req_queues; cnt++) {
req = ha->req_q_map[cnt];
if (req && test_bit(cnt, ha->req_qid_map)) {
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 && test_bit(cnt, ha->rsp_qid_map)) {
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, bool startqp)
{
int ret = 0;
struct req_que *req = NULL;
struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
struct scsi_qla_host *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->mq_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->mq_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 = (uint16_t *)(req->ring + req->length);
mutex_unlock(&ha->mq_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);
if (startqp) {
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->mq_lock);
clear_bit(que_id, ha->req_qid_map);
mutex_unlock(&ha->mq_lock);
goto que_failed;
}
vha->flags.qpairs_req_created = 1;
}
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 qla_qpair *qpair = container_of(work, struct qla_qpair, q_work);
struct scsi_qla_host *vha = qpair->vha;
spin_lock_irqsave(&qpair->qp_lock, flags);
qla24xx_process_response_queue(vha, qpair->rsp);
spin_unlock_irqrestore(&qpair->qp_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, struct qla_qpair *qpair, bool startqp)
{
int ret = 0;
struct rsp_que *rsp = NULL;
struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
struct scsi_qla_host *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->mq_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->mq_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);
rsp->msix = qpair->msix;
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,
"rsp 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;
/* Set option to indicate response queue creation */
options |= BIT_1;
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 = (uint16_t *)(rsp->ring + rsp->length);
mutex_unlock(&ha->mq_lock);
ql_dbg(ql_dbg_multiq, base_vha, 0xc00b,
"options=%x id=%d rsp_q_in=%p rsp_q_out=%p\n",
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\n",
rsp->options, rsp->id, rsp->rsp_q_in,
rsp->rsp_q_out);
ret = qla25xx_request_irq(ha, qpair, qpair->msix,
ha->flags.disable_msix_handshake ?
QLA_MSIX_QPAIR_MULTIQ_RSP_Q : QLA_MSIX_QPAIR_MULTIQ_RSP_Q_HS);
if (ret)
goto que_failed;
if (startqp) {
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->mq_lock);
clear_bit(que_id, ha->rsp_qid_map);
mutex_unlock(&ha->mq_lock);
goto que_failed;
}
vha->flags.qpairs_rsp_created = 1;
}
rsp->req = NULL;
qla2x00_init_response_q_entries(rsp);
if (qpair->hw->wq)
INIT_WORK(&qpair->q_work, qla_do_work);
return rsp->id;
que_failed:
qla25xx_free_rsp_que(base_vha, rsp);
failed:
return 0;
}
static void qla_ctrlvp_sp_done(srb_t *sp, int res)
{
if (sp->comp)
complete(sp->comp);
/* don't free sp here. Let the caller do the free */
}
/**
* qla24xx_control_vp() - Enable a virtual port for given host
* @vha: adapter block pointer
* @cmd: command type to be sent for enable virtual port
*
* Return: qla2xxx local function return status code.
*/
int qla24xx_control_vp(scsi_qla_host_t *vha, int cmd)
{
int rval = QLA_MEMORY_ALLOC_FAILED;
struct qla_hw_data *ha = vha->hw;
int vp_index = vha->vp_idx;
struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
DECLARE_COMPLETION_ONSTACK(comp);
srb_t *sp;
ql_dbg(ql_dbg_vport, vha, 0x10c1,
"Entered %s cmd %x index %d.\n", __func__, cmd, vp_index);
if (vp_index == 0 || vp_index >= ha->max_npiv_vports)
return QLA_PARAMETER_ERROR;
/* ref: INIT */
sp = qla2x00_get_sp(base_vha, NULL, GFP_KERNEL);
if (!sp)
return rval;
sp->type = SRB_CTRL_VP;
sp->name = "ctrl_vp";
sp->comp = ∁
qla2x00_init_async_sp(sp, qla2x00_get_async_timeout(vha) + 2,
qla_ctrlvp_sp_done);
sp->u.iocb_cmd.u.ctrlvp.cmd = cmd;
sp->u.iocb_cmd.u.ctrlvp.vp_index = vp_index;
rval = qla2x00_start_sp(sp);
if (rval != QLA_SUCCESS) {
ql_dbg(ql_dbg_async, vha, 0xffff,
"%s: %s Failed submission. %x.\n",
__func__, sp->name, rval);
goto done;
}
ql_dbg(ql_dbg_vport, vha, 0x113f, "%s hndl %x submitted\n",
sp->name, sp->handle);
wait_for_completion(&comp);
sp->comp = NULL;
rval = sp->rc;
switch (rval) {
case QLA_FUNCTION_TIMEOUT:
ql_dbg(ql_dbg_vport, vha, 0xffff, "%s: %s Timeout. %x.\n",
__func__, sp->name, rval);
break;
case QLA_SUCCESS:
ql_dbg(ql_dbg_vport, vha, 0xffff, "%s: %s done.\n",
__func__, sp->name);
break;
default:
ql_dbg(ql_dbg_vport, vha, 0xffff, "%s: %s Failed. %x.\n",
__func__, sp->name, rval);
break;
}
done:
/* ref: INIT */
kref_put(&sp->cmd_kref, qla2x00_sp_release);
return rval;
}
struct scsi_qla_host *qla_find_host_by_vp_idx(struct scsi_qla_host *vha, uint16_t vp_idx)
{
struct qla_hw_data *ha = vha->hw;
if (vha->vp_idx == vp_idx)
return vha;
BUG_ON(ha->vp_map == NULL);
if (likely(test_bit(vp_idx, ha->vp_idx_map)))
return ha->vp_map[vp_idx].vha;
return NULL;
}
/* vport_slock to be held by the caller */
void
qla_update_vp_map(struct scsi_qla_host *vha, int cmd)
{
void *slot;
u32 key;
int rc;
if (!vha->hw->vp_map)
return;
key = vha->d_id.b24;
switch (cmd) {
case SET_VP_IDX:
vha->hw->vp_map[vha->vp_idx].vha = vha;
break;
case SET_AL_PA:
slot = btree_lookup32(&vha->hw->host_map, key);
if (!slot) {
ql_dbg(ql_dbg_disc, vha, 0xf018,
"Save vha in host_map %p %06x\n", vha, key);
rc = btree_insert32(&vha->hw->host_map,
key, vha, GFP_ATOMIC);
if (rc)
ql_log(ql_log_info, vha, 0xd03e,
"Unable to insert s_id into host_map: %06x\n",
key);
return;
}
ql_dbg(ql_dbg_disc, vha, 0xf019,
"replace existing vha in host_map %p %06x\n", vha, key);
btree_update32(&vha->hw->host_map, key, vha);
break;
case RESET_VP_IDX:
vha->hw->vp_map[vha->vp_idx].vha = NULL;
break;
case RESET_AL_PA:
ql_dbg(ql_dbg_disc, vha, 0xf01a,
"clear vha in host_map %p %06x\n", vha, key);
slot = btree_lookup32(&vha->hw->host_map, key);
if (slot)
btree_remove32(&vha->hw->host_map, key);
vha->d_id.b24 = 0;
break;
}
}
void qla_update_host_map(struct scsi_qla_host *vha, port_id_t id)
{
if (!vha->d_id.b24) {
vha->d_id = id;
qla_update_vp_map(vha, SET_AL_PA);
} else if (vha->d_id.b24 != id.b24) {
qla_update_vp_map(vha, RESET_AL_PA);
vha->d_id = id;
qla_update_vp_map(vha, SET_AL_PA);
}
}
int qla_create_buf_pool(struct scsi_qla_host *vha, struct qla_qpair *qp)
{
int sz;
qp->buf_pool.num_bufs = qp->req->length;
sz = BITS_TO_LONGS(qp->req->length);
qp->buf_pool.buf_map = kcalloc(sz, sizeof(long), GFP_KERNEL);
if (!qp->buf_pool.buf_map) {
ql_log(ql_log_warn, vha, 0x0186,
"Failed to allocate buf_map(%zd).\n", sz * sizeof(unsigned long));
return -ENOMEM;
}
sz = qp->req->length * sizeof(void *);
qp->buf_pool.buf_array = kcalloc(qp->req->length, sizeof(void *), GFP_KERNEL);
if (!qp->buf_pool.buf_array) {
ql_log(ql_log_warn, vha, 0x0186,
"Failed to allocate buf_array(%d).\n", sz);
kfree(qp->buf_pool.buf_map);
return -ENOMEM;
}
sz = qp->req->length * sizeof(dma_addr_t);
qp->buf_pool.dma_array = kcalloc(qp->req->length, sizeof(dma_addr_t), GFP_KERNEL);
if (!qp->buf_pool.dma_array) {
ql_log(ql_log_warn, vha, 0x0186,
"Failed to allocate dma_array(%d).\n", sz);
kfree(qp->buf_pool.buf_map);
kfree(qp->buf_pool.buf_array);
return -ENOMEM;
}
set_bit(0, qp->buf_pool.buf_map);
return 0;
}
void qla_free_buf_pool(struct qla_qpair *qp)
{
int i;
struct qla_hw_data *ha = qp->vha->hw;
for (i = 0; i < qp->buf_pool.num_bufs; i++) {
if (qp->buf_pool.buf_array[i] && qp->buf_pool.dma_array[i])
dma_pool_free(ha->fcp_cmnd_dma_pool, qp->buf_pool.buf_array[i],
qp->buf_pool.dma_array[i]);
qp->buf_pool.buf_array[i] = NULL;
qp->buf_pool.dma_array[i] = 0;
}
kfree(qp->buf_pool.dma_array);
kfree(qp->buf_pool.buf_array);
kfree(qp->buf_pool.buf_map);
}
/* it is assume qp->qp_lock is held at this point */
int qla_get_buf(struct scsi_qla_host *vha, struct qla_qpair *qp, struct qla_buf_dsc *dsc)
{
u16 tag, i = 0;
void *buf;
dma_addr_t buf_dma;
struct qla_hw_data *ha = vha->hw;
dsc->tag = TAG_FREED;
again:
tag = find_first_zero_bit(qp->buf_pool.buf_map, qp->buf_pool.num_bufs);
if (tag >= qp->buf_pool.num_bufs) {
ql_dbg(ql_dbg_io, vha, 0x00e2,
"qp(%d) ran out of buf resource.\n", qp->id);
return -EIO;
}
if (tag == 0) {
set_bit(0, qp->buf_pool.buf_map);
i++;
if (i == 5) {
ql_dbg(ql_dbg_io, vha, 0x00e3,
"qp(%d) unable to get tag.\n", qp->id);
return -EIO;
}
goto again;
}
if (!qp->buf_pool.buf_array[tag]) {
buf = dma_pool_zalloc(ha->fcp_cmnd_dma_pool, GFP_ATOMIC, &buf_dma);
if (!buf) {
ql_log(ql_log_fatal, vha, 0x13b1,
"Failed to allocate buf.\n");
return -ENOMEM;
}
dsc->buf = qp->buf_pool.buf_array[tag] = buf;
dsc->buf_dma = qp->buf_pool.dma_array[tag] = buf_dma;
qp->buf_pool.num_alloc++;
} else {
dsc->buf = qp->buf_pool.buf_array[tag];
dsc->buf_dma = qp->buf_pool.dma_array[tag];
memset(dsc->buf, 0, FCP_CMND_DMA_POOL_SIZE);
}
qp->buf_pool.num_active++;
if (qp->buf_pool.num_active > qp->buf_pool.max_used)
qp->buf_pool.max_used = qp->buf_pool.num_active;
dsc->tag = tag;
set_bit(tag, qp->buf_pool.buf_map);
return 0;
}
static void qla_trim_buf(struct qla_qpair *qp, u16 trim)
{
int i, j;
struct qla_hw_data *ha = qp->vha->hw;
if (!trim)
return;
for (i = 0; i < trim; i++) {
j = qp->buf_pool.num_alloc - 1;
if (test_bit(j, qp->buf_pool.buf_map)) {
ql_dbg(ql_dbg_io + ql_dbg_verbose, qp->vha, 0x300b,
"QP id(%d): trim active buf[%d]. Remain %d bufs\n",
qp->id, j, qp->buf_pool.num_alloc);
return;
}
if (qp->buf_pool.buf_array[j]) {
dma_pool_free(ha->fcp_cmnd_dma_pool, qp->buf_pool.buf_array[j],
qp->buf_pool.dma_array[j]);
qp->buf_pool.buf_array[j] = NULL;
qp->buf_pool.dma_array[j] = 0;
}
qp->buf_pool.num_alloc--;
if (!qp->buf_pool.num_alloc)
break;
}
ql_dbg(ql_dbg_io + ql_dbg_verbose, qp->vha, 0x3010,
"QP id(%d): trimmed %d bufs. Remain %d bufs\n",
qp->id, trim, qp->buf_pool.num_alloc);
}
static void __qla_adjust_buf(struct qla_qpair *qp)
{
u32 trim;
qp->buf_pool.take_snapshot = 0;
qp->buf_pool.prev_max = qp->buf_pool.max_used;
qp->buf_pool.max_used = qp->buf_pool.num_active;
if (qp->buf_pool.prev_max > qp->buf_pool.max_used &&
qp->buf_pool.num_alloc > qp->buf_pool.max_used) {
/* down trend */
trim = qp->buf_pool.num_alloc - qp->buf_pool.max_used;
trim = (trim * 10) / 100;
trim = trim ? trim : 1;
qla_trim_buf(qp, trim);
} else if (!qp->buf_pool.prev_max && !qp->buf_pool.max_used) {
/* 2 periods of no io */
qla_trim_buf(qp, qp->buf_pool.num_alloc);
}
}
/* it is assume qp->qp_lock is held at this point */
void qla_put_buf(struct qla_qpair *qp, struct qla_buf_dsc *dsc)
{
if (dsc->tag == TAG_FREED)
return;
lockdep_assert_held(qp->qp_lock_ptr);
clear_bit(dsc->tag, qp->buf_pool.buf_map);
qp->buf_pool.num_active--;
dsc->tag = TAG_FREED;
if (qp->buf_pool.take_snapshot)
__qla_adjust_buf(qp);
}
#define EXPIRE (60 * HZ)
void qla_adjust_buf(struct scsi_qla_host *vha)
{
unsigned long flags;
int i;
struct qla_qpair *qp;
if (vha->vp_idx)
return;
if (!vha->buf_expired) {
vha->buf_expired = jiffies + EXPIRE;
return;
}
if (time_before(jiffies, vha->buf_expired))
return;
vha->buf_expired = jiffies + EXPIRE;
for (i = 0; i < vha->hw->num_qpairs; i++) {
qp = vha->hw->queue_pair_map[i];
if (!qp)
continue;
if (!qp->buf_pool.num_alloc)
continue;
if (qp->buf_pool.take_snapshot) {
/* no io has gone through in the last EXPIRE period */
spin_lock_irqsave(qp->qp_lock_ptr, flags);
__qla_adjust_buf(qp);
spin_unlock_irqrestore(qp->qp_lock_ptr, flags);
} else {
qp->buf_pool.take_snapshot = 1;
}
}
}
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