// SPDX-License-Identifier: GPL-2.0-only
/*
* QLogic Fibre Channel HBA Driver
* Copyright (c) 2003-2017 QLogic Corporation
*/
#include "qla_nvme.h"
#include <linux/scatterlist.h>
#include <linux/delay.h>
#include <linux/nvme.h>
#include <linux/nvme-fc.h>
#include <linux/blk-mq-pci.h>
#include <linux/blk-mq.h>
static struct nvme_fc_port_template qla_nvme_fc_transport;
static int qla_nvme_ls_reject_iocb(struct scsi_qla_host *vha,
struct qla_qpair *qp,
struct qla_nvme_lsrjt_pt_arg *a,
bool is_xchg_terminate);
struct qla_nvme_unsol_ctx {
struct list_head elem;
struct scsi_qla_host *vha;
struct fc_port *fcport;
struct srb *sp;
struct nvmefc_ls_rsp lsrsp;
struct nvmefc_ls_rsp *fd_rsp;
struct work_struct lsrsp_work;
struct work_struct abort_work;
__le32 exchange_address;
__le16 nport_handle;
__le16 ox_id;
int comp_status;
spinlock_t cmd_lock;
};
int qla_nvme_register_remote(struct scsi_qla_host *vha, struct fc_port *fcport)
{
struct qla_nvme_rport *rport;
struct nvme_fc_port_info req;
int ret;
if (!IS_ENABLED(CONFIG_NVME_FC))
return 0;
if (!vha->flags.nvme_enabled) {
ql_log(ql_log_info, vha, 0x2100,
"%s: Not registering target since Host NVME is not enabled\n",
__func__);
return 0;
}
if (qla_nvme_register_hba(vha))
return 0;
if (!vha->nvme_local_port)
return 0;
if (!(fcport->nvme_prli_service_param &
(NVME_PRLI_SP_TARGET | NVME_PRLI_SP_DISCOVERY)) ||
(fcport->nvme_flag & NVME_FLAG_REGISTERED))
return 0;
fcport->nvme_flag &= ~NVME_FLAG_RESETTING;
memset(&req, 0, sizeof(struct nvme_fc_port_info));
req.port_name = wwn_to_u64(fcport->port_name);
req.node_name = wwn_to_u64(fcport->node_name);
req.port_role = 0;
req.dev_loss_tmo = fcport->dev_loss_tmo;
if (fcport->nvme_prli_service_param & NVME_PRLI_SP_INITIATOR)
req.port_role = FC_PORT_ROLE_NVME_INITIATOR;
if (fcport->nvme_prli_service_param & NVME_PRLI_SP_TARGET)
req.port_role |= FC_PORT_ROLE_NVME_TARGET;
if (fcport->nvme_prli_service_param & NVME_PRLI_SP_DISCOVERY)
req.port_role |= FC_PORT_ROLE_NVME_DISCOVERY;
req.port_id = fcport->d_id.b24;
ql_log(ql_log_info, vha, 0x2102,
"%s: traddr=nn-0x%016llx:pn-0x%016llx PortID:%06x\n",
__func__, req.node_name, req.port_name,
req.port_id);
ret = nvme_fc_register_remoteport(vha->nvme_local_port, &req,
&fcport->nvme_remote_port);
if (ret) {
ql_log(ql_log_warn, vha, 0x212e,
"Failed to register remote port. Transport returned %d\n",
ret);
return ret;
}
nvme_fc_set_remoteport_devloss(fcport->nvme_remote_port,
fcport->dev_loss_tmo);
if (fcport->nvme_prli_service_param & NVME_PRLI_SP_SLER)
ql_log(ql_log_info, vha, 0x212a,
"PortID:%06x Supports SLER\n", req.port_id);
if (fcport->nvme_prli_service_param & NVME_PRLI_SP_PI_CTRL)
ql_log(ql_log_info, vha, 0x212b,
"PortID:%06x Supports PI control\n", req.port_id);
rport = fcport->nvme_remote_port->private;
rport->fcport = fcport;
fcport->nvme_flag |= NVME_FLAG_REGISTERED;
return 0;
}
/* Allocate a queue for NVMe traffic */
static int qla_nvme_alloc_queue(struct nvme_fc_local_port *lport,
unsigned int qidx, u16 qsize, void **handle)
{
struct scsi_qla_host *vha;
struct qla_hw_data *ha;
struct qla_qpair *qpair;
/* Map admin queue and 1st IO queue to index 0 */
if (qidx)
qidx--;
vha = (struct scsi_qla_host *)lport->private;
ha = vha->hw;
ql_log(ql_log_info, vha, 0x2104,
"%s: handle %p, idx =%d, qsize %d\n",
__func__, handle, qidx, qsize);
if (qidx > qla_nvme_fc_transport.max_hw_queues) {
ql_log(ql_log_warn, vha, 0x212f,
"%s: Illegal qidx=%d. Max=%d\n",
__func__, qidx, qla_nvme_fc_transport.max_hw_queues);
return -EINVAL;
}
/* Use base qpair if max_qpairs is 0 */
if (!ha->max_qpairs) {
qpair = ha->base_qpair;
} else {
if (ha->queue_pair_map[qidx]) {
*handle = ha->queue_pair_map[qidx];
ql_log(ql_log_info, vha, 0x2121,
"Returning existing qpair of %p for idx=%x\n",
*handle, qidx);
return 0;
}
qpair = qla2xxx_create_qpair(vha, 5, vha->vp_idx, true);
if (!qpair) {
ql_log(ql_log_warn, vha, 0x2122,
"Failed to allocate qpair\n");
return -EINVAL;
}
qla_adjust_iocb_limit(vha);
}
*handle = qpair;
return 0;
}
static void qla_nvme_release_fcp_cmd_kref(struct kref *kref)
{
struct srb *sp = container_of(kref, struct srb, cmd_kref);
struct nvme_private *priv = (struct nvme_private *)sp->priv;
struct nvmefc_fcp_req *fd;
struct srb_iocb *nvme;
unsigned long flags;
if (!priv)
goto out;
nvme = &sp->u.iocb_cmd;
fd = nvme->u.nvme.desc;
spin_lock_irqsave(&priv->cmd_lock, flags);
priv->sp = NULL;
sp->priv = NULL;
if (priv->comp_status == QLA_SUCCESS) {
fd->rcv_rsplen = le16_to_cpu(nvme->u.nvme.rsp_pyld_len);
fd->status = NVME_SC_SUCCESS;
} else {
fd->rcv_rsplen = 0;
fd->transferred_length = 0;
fd->status = NVME_SC_INTERNAL;
}
spin_unlock_irqrestore(&priv->cmd_lock, flags);
fd->done(fd);
out:
qla2xxx_rel_qpair_sp(sp->qpair, sp);
}
static void qla_nvme_release_ls_cmd_kref(struct kref *kref)
{
struct srb *sp = container_of(kref, struct srb, cmd_kref);
struct nvme_private *priv = (struct nvme_private *)sp->priv;
struct nvmefc_ls_req *fd;
unsigned long flags;
if (!priv)
goto out;
spin_lock_irqsave(&priv->cmd_lock, flags);
priv->sp = NULL;
sp->priv = NULL;
spin_unlock_irqrestore(&priv->cmd_lock, flags);
fd = priv->fd;
fd->done(fd, priv->comp_status);
out:
qla2x00_rel_sp(sp);
}
static void qla_nvme_ls_complete(struct work_struct *work)
{
struct nvme_private *priv =
container_of(work, struct nvme_private, ls_work);
kref_put(&priv->sp->cmd_kref, qla_nvme_release_ls_cmd_kref);
}
static void qla_nvme_sp_ls_done(srb_t *sp, int res)
{
struct nvme_private *priv = sp->priv;
if (WARN_ON_ONCE(kref_read(&sp->cmd_kref) == 0))
return;
if (res)
res = -EINVAL;
priv->comp_status = res;
INIT_WORK(&priv->ls_work, qla_nvme_ls_complete);
schedule_work(&priv->ls_work);
}
static void qla_nvme_release_lsrsp_cmd_kref(struct kref *kref)
{
struct srb *sp = container_of(kref, struct srb, cmd_kref);
struct qla_nvme_unsol_ctx *uctx = sp->priv;
struct nvmefc_ls_rsp *fd_rsp;
unsigned long flags;
if (!uctx) {
qla2x00_rel_sp(sp);
return;
}
spin_lock_irqsave(&uctx->cmd_lock, flags);
uctx->sp = NULL;
sp->priv = NULL;
spin_unlock_irqrestore(&uctx->cmd_lock, flags);
fd_rsp = uctx->fd_rsp;
list_del(&uctx->elem);
fd_rsp->done(fd_rsp);
kfree(uctx);
qla2x00_rel_sp(sp);
}
static void qla_nvme_lsrsp_complete(struct work_struct *work)
{
struct qla_nvme_unsol_ctx *uctx =
container_of(work, struct qla_nvme_unsol_ctx, lsrsp_work);
kref_put(&uctx->sp->cmd_kref, qla_nvme_release_lsrsp_cmd_kref);
}
static void qla_nvme_sp_lsrsp_done(srb_t *sp, int res)
{
struct qla_nvme_unsol_ctx *uctx = sp->priv;
if (WARN_ON_ONCE(kref_read(&sp->cmd_kref) == 0))
return;
if (res)
res = -EINVAL;
uctx->comp_status = res;
INIT_WORK(&uctx->lsrsp_work, qla_nvme_lsrsp_complete);
schedule_work(&uctx->lsrsp_work);
}
/* it assumed that QPair lock is held. */
static void qla_nvme_sp_done(srb_t *sp, int res)
{
struct nvme_private *priv = sp->priv;
priv->comp_status = res;
kref_put(&sp->cmd_kref, qla_nvme_release_fcp_cmd_kref);
return;
}
static void qla_nvme_abort_work(struct work_struct *work)
{
struct nvme_private *priv =
container_of(work, struct nvme_private, abort_work);
srb_t *sp = priv->sp;
fc_port_t *fcport = sp->fcport;
struct qla_hw_data *ha = fcport->vha->hw;
int rval, abts_done_called = 1;
bool io_wait_for_abort_done;
uint32_t handle;
ql_dbg(ql_dbg_io, fcport->vha, 0xffff,
"%s called for sp=%p, hndl=%x on fcport=%p desc=%p deleted=%d\n",
__func__, sp, sp->handle, fcport, sp->u.iocb_cmd.u.nvme.desc, fcport->deleted);
if (!ha->flags.fw_started || fcport->deleted == QLA_SESS_DELETED)
goto out;
if (ha->flags.host_shutting_down) {
ql_log(ql_log_info, sp->fcport->vha, 0xffff,
"%s Calling done on sp: %p, type: 0x%x\n",
__func__, sp, sp->type);
sp->done(sp, 0);
goto out;
}
/*
* sp may not be valid after abort_command if return code is either
* SUCCESS or ERR_FROM_FW codes, so cache the value here.
*/
io_wait_for_abort_done = ql2xabts_wait_nvme &&
QLA_ABTS_WAIT_ENABLED(sp);
handle = sp->handle;
rval = ha->isp_ops->abort_command(sp);
ql_dbg(ql_dbg_io, fcport->vha, 0x212b,
"%s: %s command for sp=%p, handle=%x on fcport=%p rval=%x\n",
__func__, (rval != QLA_SUCCESS) ? "Failed to abort" : "Aborted",
sp, handle, fcport, rval);
/*
* If async tmf is enabled, the abort callback is called only on
* return codes QLA_SUCCESS and QLA_ERR_FROM_FW.
*/
if (ql2xasynctmfenable &&
rval != QLA_SUCCESS && rval != QLA_ERR_FROM_FW)
abts_done_called = 0;
/*
* Returned before decreasing kref so that I/O requests
* are waited until ABTS complete. This kref is decreased
* at qla24xx_abort_sp_done function.
*/
if (abts_done_called && io_wait_for_abort_done)
return;
out:
/* kref_get was done before work was schedule. */
kref_put(&sp->cmd_kref, sp->put_fn);
}
static int qla_nvme_xmt_ls_rsp(struct nvme_fc_local_port *lport,
struct nvme_fc_remote_port *rport,
struct nvmefc_ls_rsp *fd_resp)
{
struct qla_nvme_unsol_ctx *uctx = container_of(fd_resp,
struct qla_nvme_unsol_ctx, lsrsp);
struct qla_nvme_rport *qla_rport = rport->private;
fc_port_t *fcport = qla_rport->fcport;
struct scsi_qla_host *vha = uctx->vha;
struct qla_hw_data *ha = vha->hw;
struct qla_nvme_lsrjt_pt_arg a;
struct srb_iocb *nvme;
srb_t *sp;
int rval = QLA_FUNCTION_FAILED;
uint8_t cnt = 0;
if (!fcport || fcport->deleted)
goto out;
if (!ha->flags.fw_started)
goto out;
/* Alloc SRB structure */
sp = qla2x00_get_sp(vha, fcport, GFP_ATOMIC);
if (!sp)
goto out;
sp->type = SRB_NVME_LS;
sp->name = "nvme_ls";
sp->done = qla_nvme_sp_lsrsp_done;
sp->put_fn = qla_nvme_release_lsrsp_cmd_kref;
sp->priv = (void *)uctx;
sp->unsol_rsp = 1;
uctx->sp = sp;
spin_lock_init(&uctx->cmd_lock);
nvme = &sp->u.iocb_cmd;
uctx->fd_rsp = fd_resp;
nvme->u.nvme.desc = fd_resp;
nvme->u.nvme.dir = 0;
nvme->u.nvme.dl = 0;
nvme->u.nvme.timeout_sec = 0;
nvme->u.nvme.cmd_dma = fd_resp->rspdma;
nvme->u.nvme.cmd_len = cpu_to_le32(fd_resp->rsplen);
nvme->u.nvme.rsp_len = 0;
nvme->u.nvme.rsp_dma = 0;
nvme->u.nvme.exchange_address = uctx->exchange_address;
nvme->u.nvme.nport_handle = uctx->nport_handle;
nvme->u.nvme.ox_id = uctx->ox_id;
dma_sync_single_for_device(&ha->pdev->dev, nvme->u.nvme.cmd_dma,
fd_resp->rsplen, DMA_TO_DEVICE);
ql_dbg(ql_dbg_unsol, vha, 0x2122,
"Unsol lsreq portid=%06x %8phC exchange_address 0x%x ox_id 0x%x hdl 0x%x\n",
fcport->d_id.b24, fcport->port_name, uctx->exchange_address,
uctx->ox_id, uctx->nport_handle);
retry:
rval = qla2x00_start_sp(sp);
switch (rval) {
case QLA_SUCCESS:
break;
case EAGAIN:
msleep(PURLS_MSLEEP_INTERVAL);
cnt++;
if (cnt < PURLS_RETRY_COUNT)
goto retry;
fallthrough;
default:
ql_dbg(ql_log_warn, vha, 0x2123,
"Failed to xmit Unsol ls response = %d\n", rval);
rval = -EIO;
qla2x00_rel_sp(sp);
goto out;
}
return 0;
out:
memset((void *)&a, 0, sizeof(a));
a.vp_idx = vha->vp_idx;
a.nport_handle = uctx->nport_handle;
a.xchg_address = uctx->exchange_address;
qla_nvme_ls_reject_iocb(vha, ha->base_qpair, &a, true);
kfree(uctx);
return rval;
}
static void qla_nvme_ls_abort(struct nvme_fc_local_port *lport,
struct nvme_fc_remote_port *rport, struct nvmefc_ls_req *fd)
{
struct nvme_private *priv = fd->private;
unsigned long flags;
spin_lock_irqsave(&priv->cmd_lock, flags);
if (!priv->sp) {
spin_unlock_irqrestore(&priv->cmd_lock, flags);
return;
}
if (!kref_get_unless_zero(&priv->sp->cmd_kref)) {
spin_unlock_irqrestore(&priv->cmd_lock, flags);
return;
}
spin_unlock_irqrestore(&priv->cmd_lock, flags);
INIT_WORK(&priv->abort_work, qla_nvme_abort_work);
schedule_work(&priv->abort_work);
}
static int qla_nvme_ls_req(struct nvme_fc_local_port *lport,
struct nvme_fc_remote_port *rport, struct nvmefc_ls_req *fd)
{
struct qla_nvme_rport *qla_rport = rport->private;
fc_port_t *fcport = qla_rport->fcport;
struct srb_iocb *nvme;
struct nvme_private *priv = fd->private;
struct scsi_qla_host *vha;
int rval = QLA_FUNCTION_FAILED;
struct qla_hw_data *ha;
srb_t *sp;
if (!fcport || fcport->deleted)
return rval;
vha = fcport->vha;
ha = vha->hw;
if (!ha->flags.fw_started)
return rval;
/* Alloc SRB structure */
sp = qla2x00_get_sp(vha, fcport, GFP_ATOMIC);
if (!sp)
return rval;
sp->type = SRB_NVME_LS;
sp->name = "nvme_ls";
sp->done = qla_nvme_sp_ls_done;
sp->put_fn = qla_nvme_release_ls_cmd_kref;
sp->priv = priv;
priv->sp = sp;
kref_init(&sp->cmd_kref);
spin_lock_init(&priv->cmd_lock);
nvme = &sp->u.iocb_cmd;
priv->fd = fd;
nvme->u.nvme.desc = fd;
nvme->u.nvme.dir = 0;
nvme->u.nvme.dl = 0;
nvme->u.nvme.cmd_len = cpu_to_le32(fd->rqstlen);
nvme->u.nvme.rsp_len = cpu_to_le32(fd->rsplen);
nvme->u.nvme.rsp_dma = fd->rspdma;
nvme->u.nvme.timeout_sec = fd->timeout;
nvme->u.nvme.cmd_dma = fd->rqstdma;
dma_sync_single_for_device(&ha->pdev->dev, nvme->u.nvme.cmd_dma,
fd->rqstlen, DMA_TO_DEVICE);
rval = qla2x00_start_sp(sp);
if (rval != QLA_SUCCESS) {
ql_log(ql_log_warn, vha, 0x700e,
"qla2x00_start_sp failed = %d\n", rval);
sp->priv = NULL;
priv->sp = NULL;
qla2x00_rel_sp(sp);
return rval;
}
return rval;
}
static void qla_nvme_fcp_abort(struct nvme_fc_local_port *lport,
struct nvme_fc_remote_port *rport, void *hw_queue_handle,
struct nvmefc_fcp_req *fd)
{
struct nvme_private *priv = fd->private;
unsigned long flags;
spin_lock_irqsave(&priv->cmd_lock, flags);
if (!priv->sp) {
spin_unlock_irqrestore(&priv->cmd_lock, flags);
return;
}
if (!kref_get_unless_zero(&priv->sp->cmd_kref)) {
spin_unlock_irqrestore(&priv->cmd_lock, flags);
return;
}
spin_unlock_irqrestore(&priv->cmd_lock, flags);
INIT_WORK(&priv->abort_work, qla_nvme_abort_work);
schedule_work(&priv->abort_work);
}
static inline int qla2x00_start_nvme_mq(srb_t *sp)
{
unsigned long flags;
uint32_t *clr_ptr;
uint32_t handle;
struct cmd_nvme *cmd_pkt;
uint16_t cnt, i;
uint16_t req_cnt;
uint16_t tot_dsds;
uint16_t avail_dsds;
struct dsd64 *cur_dsd;
struct req_que *req = NULL;
struct rsp_que *rsp = NULL;
struct scsi_qla_host *vha = sp->fcport->vha;
struct qla_hw_data *ha = vha->hw;
struct qla_qpair *qpair = sp->qpair;
struct srb_iocb *nvme = &sp->u.iocb_cmd;
struct scatterlist *sgl, *sg;
struct nvmefc_fcp_req *fd = nvme->u.nvme.desc;
struct nvme_fc_cmd_iu *cmd = fd->cmdaddr;
uint32_t rval = QLA_SUCCESS;
/* Setup qpair pointers */
req = qpair->req;
rsp = qpair->rsp;
tot_dsds = fd->sg_cnt;
/* Acquire qpair specific lock */
spin_lock_irqsave(&qpair->qp_lock, flags);
handle = qla2xxx_get_next_handle(req);
if (handle == 0) {
rval = -EBUSY;
goto queuing_error;
}
req_cnt = qla24xx_calc_iocbs(vha, tot_dsds);
sp->iores.res_type = RESOURCE_IOCB | RESOURCE_EXCH;
sp->iores.exch_cnt = 1;
sp->iores.iocb_cnt = req_cnt;
if (qla_get_fw_resources(sp->qpair, &sp->iores)) {
rval = -EBUSY;
goto queuing_error;
}
if (req->cnt < (req_cnt + 2)) {
if (IS_SHADOW_REG_CAPABLE(ha)) {
cnt = *req->out_ptr;
} else {
cnt = rd_reg_dword_relaxed(req->req_q_out);
if (qla2x00_check_reg16_for_disconnect(vha, cnt)) {
rval = -EBUSY;
goto queuing_error;
}
}
if (req->ring_index < cnt)
req->cnt = cnt - req->ring_index;
else
req->cnt = req->length - (req->ring_index - cnt);
if (req->cnt < (req_cnt + 2)){
rval = -EBUSY;
goto queuing_error;
}
}
if (unlikely(!fd->sqid)) {
if (cmd->sqe.common.opcode == nvme_admin_async_event) {
nvme->u.nvme.aen_op = 1;
atomic_inc(&ha->nvme_active_aen_cnt);
}
}
/* Build command packet. */
req->current_outstanding_cmd = handle;
req->outstanding_cmds[handle] = sp;
sp->handle = handle;
req->cnt -= req_cnt;
cmd_pkt = (struct cmd_nvme *)req->ring_ptr;
cmd_pkt->handle = make_handle(req->id, handle);
/* Zero out remaining portion of packet. */
clr_ptr = (uint32_t *)cmd_pkt + 2;
memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8);
cmd_pkt->entry_status = 0;
/* Update entry type to indicate Command NVME IOCB */
cmd_pkt->entry_type = COMMAND_NVME;
/* No data transfer how do we check buffer len == 0?? */
if (fd->io_dir == NVMEFC_FCP_READ) {
cmd_pkt->control_flags = cpu_to_le16(CF_READ_DATA);
qpair->counters.input_bytes += fd->payload_length;
qpair->counters.input_requests++;
} else if (fd->io_dir == NVMEFC_FCP_WRITE) {
cmd_pkt->control_flags = cpu_to_le16(CF_WRITE_DATA);
if ((vha->flags.nvme_first_burst) &&
(sp->fcport->nvme_prli_service_param &
NVME_PRLI_SP_FIRST_BURST)) {
if ((fd->payload_length <=
sp->fcport->nvme_first_burst_size) ||
(sp->fcport->nvme_first_burst_size == 0))
cmd_pkt->control_flags |=
cpu_to_le16(CF_NVME_FIRST_BURST_ENABLE);
}
qpair->counters.output_bytes += fd->payload_length;
qpair->counters.output_requests++;
} else if (fd->io_dir == 0) {
cmd_pkt->control_flags = 0;
}
if (sp->fcport->edif.enable && fd->io_dir != 0)
cmd_pkt->control_flags |= cpu_to_le16(CF_EN_EDIF);
/* Set BIT_13 of control flags for Async event */
if (vha->flags.nvme2_enabled &&
cmd->sqe.common.opcode == nvme_admin_async_event) {
cmd_pkt->control_flags |= cpu_to_le16(CF_ADMIN_ASYNC_EVENT);
}
/* Set NPORT-ID */
cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id);
cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa;
cmd_pkt->port_id[1] = sp->fcport->d_id.b.area;
cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain;
cmd_pkt->vp_index = sp->fcport->vha->vp_idx;
/* NVME RSP IU */
cmd_pkt->nvme_rsp_dsd_len = cpu_to_le16(fd->rsplen);
put_unaligned_le64(fd->rspdma, &cmd_pkt->nvme_rsp_dseg_address);
/* NVME CNMD IU */
cmd_pkt->nvme_cmnd_dseg_len = cpu_to_le16(fd->cmdlen);
cmd_pkt->nvme_cmnd_dseg_address = cpu_to_le64(fd->cmddma);
cmd_pkt->dseg_count = cpu_to_le16(tot_dsds);
cmd_pkt->byte_count = cpu_to_le32(fd->payload_length);
/* One DSD is available in the Command Type NVME IOCB */
avail_dsds = 1;
cur_dsd = &cmd_pkt->nvme_dsd;
sgl = fd->first_sgl;
/* Load data segments */
for_each_sg(sgl, sg, tot_dsds, i) {
cont_a64_entry_t *cont_pkt;
/* Allocate additional continuation packets? */
if (avail_dsds == 0) {
/*
* Five DSDs are available in the Continuation
* Type 1 IOCB.
*/
/* Adjust ring index */
req->ring_index++;
if (req->ring_index == req->length) {
req->ring_index = 0;
req->ring_ptr = req->ring;
} else {
req->ring_ptr++;
}
cont_pkt = (cont_a64_entry_t *)req->ring_ptr;
put_unaligned_le32(CONTINUE_A64_TYPE,
&cont_pkt->entry_type);
cur_dsd = cont_pkt->dsd;
avail_dsds = ARRAY_SIZE(cont_pkt->dsd);
}
append_dsd64(&cur_dsd, sg);
avail_dsds--;
}
/* Set total entry count. */
cmd_pkt->entry_count = (uint8_t)req_cnt;
wmb();
/* Adjust ring index. */
req->ring_index++;
if (req->ring_index == req->length) {
req->ring_index = 0;
req->ring_ptr = req->ring;
} else {
req->ring_ptr++;
}
/* ignore nvme async cmd due to long timeout */
if (!nvme->u.nvme.aen_op)
sp->qpair->cmd_cnt++;
/* Set chip new ring index. */
wrt_reg_dword(req->req_q_in, req->ring_index);
if (vha->flags.process_response_queue &&
rsp->ring_ptr->signature != RESPONSE_PROCESSED)
qla24xx_process_response_queue(vha, rsp);
queuing_error:
if (rval)
qla_put_fw_resources(sp->qpair, &sp->iores);
spin_unlock_irqrestore(&qpair->qp_lock, flags);
return rval;
}
/* Post a command */
static int qla_nvme_post_cmd(struct nvme_fc_local_port *lport,
struct nvme_fc_remote_port *rport, void *hw_queue_handle,
struct nvmefc_fcp_req *fd)
{
fc_port_t *fcport;
struct srb_iocb *nvme;
struct scsi_qla_host *vha;
struct qla_hw_data *ha;
int rval;
srb_t *sp;
struct qla_qpair *qpair = hw_queue_handle;
struct nvme_private *priv = fd->private;
struct qla_nvme_rport *qla_rport = rport->private;
if (!priv) {
/* nvme association has been torn down */
return -ENODEV;
}
fcport = qla_rport->fcport;
if (unlikely(!qpair || !fcport || fcport->deleted))
return -EBUSY;
if (!(fcport->nvme_flag & NVME_FLAG_REGISTERED))
return -ENODEV;
vha = fcport->vha;
ha = vha->hw;
if (test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags))
return -EBUSY;
/*
* If we know the dev is going away while the transport is still sending
* IO's return busy back to stall the IO Q. This happens when the
* link goes away and fw hasn't notified us yet, but IO's are being
* returned. If the dev comes back quickly we won't exhaust the IO
* retry count at the core.
*/
if (fcport->nvme_flag & NVME_FLAG_RESETTING)
return -EBUSY;
qpair = qla_mapq_nvme_select_qpair(ha, qpair);
/* Alloc SRB structure */
sp = qla2xxx_get_qpair_sp(vha, qpair, fcport, GFP_ATOMIC);
if (!sp)
return -EBUSY;
kref_init(&sp->cmd_kref);
spin_lock_init(&priv->cmd_lock);
sp->priv = priv;
priv->sp = sp;
sp->type = SRB_NVME_CMD;
sp->name = "nvme_cmd";
sp->done = qla_nvme_sp_done;
sp->put_fn = qla_nvme_release_fcp_cmd_kref;
sp->qpair = qpair;
sp->vha = vha;
sp->cmd_sp = sp;
nvme = &sp->u.iocb_cmd;
nvme->u.nvme.desc = fd;
rval = qla2x00_start_nvme_mq(sp);
if (rval != QLA_SUCCESS) {
ql_dbg(ql_dbg_io + ql_dbg_verbose, vha, 0x212d,
"qla2x00_start_nvme_mq failed = %d\n", rval);
sp->priv = NULL;
priv->sp = NULL;
qla2xxx_rel_qpair_sp(sp->qpair, sp);
}
return rval;
}
static void qla_nvme_map_queues(struct nvme_fc_local_port *lport,
struct blk_mq_queue_map *map)
{
struct scsi_qla_host *vha = lport->private;
blk_mq_pci_map_queues(map, vha->hw->pdev, vha->irq_offset);
}
static void qla_nvme_localport_delete(struct nvme_fc_local_port *lport)
{
struct scsi_qla_host *vha = lport->private;
ql_log(ql_log_info, vha, 0x210f,
"localport delete of %p completed.\n", vha->nvme_local_port);
vha->nvme_local_port = NULL;
complete(&vha->nvme_del_done);
}
static void qla_nvme_remoteport_delete(struct nvme_fc_remote_port *rport)
{
fc_port_t *fcport;
struct qla_nvme_rport *qla_rport = rport->private;
fcport = qla_rport->fcport;
fcport->nvme_remote_port = NULL;
fcport->nvme_flag &= ~NVME_FLAG_REGISTERED;
fcport->nvme_flag &= ~NVME_FLAG_DELETING;
ql_log(ql_log_info, fcport->vha, 0x2110,
"remoteport_delete of %p %8phN completed.\n",
fcport, fcport->port_name);
complete(&fcport->nvme_del_done);
}
static struct nvme_fc_port_template qla_nvme_fc_transport = {
.localport_delete = qla_nvme_localport_delete,
.remoteport_delete = qla_nvme_remoteport_delete,
.create_queue = qla_nvme_alloc_queue,
.delete_queue = NULL,
.ls_req = qla_nvme_ls_req,
.ls_abort = qla_nvme_ls_abort,
.fcp_io = qla_nvme_post_cmd,
.fcp_abort = qla_nvme_fcp_abort,
.xmt_ls_rsp = qla_nvme_xmt_ls_rsp,
.map_queues = qla_nvme_map_queues,
.max_hw_queues = DEF_NVME_HW_QUEUES,
.max_sgl_segments = 1024,
.max_dif_sgl_segments = 64,
.dma_boundary = 0xFFFFFFFF,
.local_priv_sz = 8,
.remote_priv_sz = sizeof(struct qla_nvme_rport),
.lsrqst_priv_sz = sizeof(struct nvme_private),
.fcprqst_priv_sz = sizeof(struct nvme_private),
};
void qla_nvme_unregister_remote_port(struct fc_port *fcport)
{
int ret;
if (!IS_ENABLED(CONFIG_NVME_FC))
return;
ql_log(ql_log_warn, fcport->vha, 0x2112,
"%s: unregister remoteport on %p %8phN\n",
__func__, fcport, fcport->port_name);
if (test_bit(PFLG_DRIVER_REMOVING, &fcport->vha->pci_flags))
nvme_fc_set_remoteport_devloss(fcport->nvme_remote_port, 0);
init_completion(&fcport->nvme_del_done);
ret = nvme_fc_unregister_remoteport(fcport->nvme_remote_port);
if (ret)
ql_log(ql_log_info, fcport->vha, 0x2114,
"%s: Failed to unregister nvme_remote_port (%d)\n",
__func__, ret);
wait_for_completion(&fcport->nvme_del_done);
}
void qla_nvme_delete(struct scsi_qla_host *vha)
{
int nv_ret;
if (!IS_ENABLED(CONFIG_NVME_FC))
return;
if (vha->nvme_local_port) {
init_completion(&vha->nvme_del_done);
ql_log(ql_log_info, vha, 0x2116,
"unregister localport=%p\n",
vha->nvme_local_port);
nv_ret = nvme_fc_unregister_localport(vha->nvme_local_port);
if (nv_ret)
ql_log(ql_log_info, vha, 0x2115,
"Unregister of localport failed\n");
else
wait_for_completion(&vha->nvme_del_done);
}
}
int qla_nvme_register_hba(struct scsi_qla_host *vha)
{
struct nvme_fc_port_template *tmpl;
struct qla_hw_data *ha;
struct nvme_fc_port_info pinfo;
int ret = -EINVAL;
if (!IS_ENABLED(CONFIG_NVME_FC))
return ret;
ha = vha->hw;
tmpl = &qla_nvme_fc_transport;
if (ql2xnvme_queues < MIN_NVME_HW_QUEUES) {
ql_log(ql_log_warn, vha, 0xfffd,
"ql2xnvme_queues=%d is lower than minimum queues: %d. Resetting ql2xnvme_queues to:%d\n",
ql2xnvme_queues, MIN_NVME_HW_QUEUES, DEF_NVME_HW_QUEUES);
ql2xnvme_queues = DEF_NVME_HW_QUEUES;
} else if (ql2xnvme_queues > (ha->max_qpairs - 1)) {
ql_log(ql_log_warn, vha, 0xfffd,
"ql2xnvme_queues=%d is greater than available IRQs: %d. Resetting ql2xnvme_queues to: %d\n",
ql2xnvme_queues, (ha->max_qpairs - 1),
(ha->max_qpairs - 1));
ql2xnvme_queues = ((ha->max_qpairs - 1));
}
qla_nvme_fc_transport.max_hw_queues =
min((uint8_t)(ql2xnvme_queues),
(uint8_t)((ha->max_qpairs - 1) ? (ha->max_qpairs - 1) : 1));
ql_log(ql_log_info, vha, 0xfffb,
"Number of NVME queues used for this port: %d\n",
qla_nvme_fc_transport.max_hw_queues);
pinfo.node_name = wwn_to_u64(vha->node_name);
pinfo.port_name = wwn_to_u64(vha->port_name);
pinfo.port_role = FC_PORT_ROLE_NVME_INITIATOR;
pinfo.port_id = vha->d_id.b24;
mutex_lock(&ha->vport_lock);
/*
* Check again for nvme_local_port to see if any other thread raced
* with this one and finished registration.
*/
if (!vha->nvme_local_port) {
ql_log(ql_log_info, vha, 0xffff,
"register_localport: host-traddr=nn-0x%llx:pn-0x%llx on portID:%x\n",
pinfo.node_name, pinfo.port_name, pinfo.port_id);
qla_nvme_fc_transport.dma_boundary = vha->host->dma_boundary;
ret = nvme_fc_register_localport(&pinfo, tmpl,
get_device(&ha->pdev->dev),
&vha->nvme_local_port);
mutex_unlock(&ha->vport_lock);
} else {
mutex_unlock(&ha->vport_lock);
return 0;
}
if (ret) {
ql_log(ql_log_warn, vha, 0xffff,
"register_localport failed: ret=%x\n", ret);
} else {
vha->nvme_local_port->private = vha;
}
return ret;
}
void qla_nvme_abort_set_option(struct abort_entry_24xx *abt, srb_t *orig_sp)
{
struct qla_hw_data *ha;
if (!(ql2xabts_wait_nvme && QLA_ABTS_WAIT_ENABLED(orig_sp)))
return;
ha = orig_sp->fcport->vha->hw;
WARN_ON_ONCE(abt->options & cpu_to_le16(BIT_0));
/* Use Driver Specified Retry Count */
abt->options |= cpu_to_le16(AOF_ABTS_RTY_CNT);
abt->drv.abts_rty_cnt = cpu_to_le16(2);
/* Use specified response timeout */
abt->options |= cpu_to_le16(AOF_RSP_TIMEOUT);
/* set it to 2 * r_a_tov in secs */
abt->drv.rsp_timeout = cpu_to_le16(2 * (ha->r_a_tov / 10));
}
void qla_nvme_abort_process_comp_status(struct abort_entry_24xx *abt, srb_t *orig_sp)
{
u16 comp_status;
struct scsi_qla_host *vha;
if (!(ql2xabts_wait_nvme && QLA_ABTS_WAIT_ENABLED(orig_sp)))
return;
vha = orig_sp->fcport->vha;
comp_status = le16_to_cpu(abt->comp_status);
switch (comp_status) {
case CS_RESET: /* reset event aborted */
case CS_ABORTED: /* IOCB was cleaned */
/* N_Port handle is not currently logged in */
case CS_TIMEOUT:
/* N_Port handle was logged out while waiting for ABTS to complete */
case CS_PORT_UNAVAILABLE:
/* Firmware found that the port name changed */
case CS_PORT_LOGGED_OUT:
/* BA_RJT was received for the ABTS */
case CS_PORT_CONFIG_CHG:
ql_dbg(ql_dbg_async, vha, 0xf09d,
"Abort I/O IOCB completed with error, comp_status=%x\n",
comp_status);
break;
/* BA_RJT was received for the ABTS */
case CS_REJECT_RECEIVED:
ql_dbg(ql_dbg_async, vha, 0xf09e,
"BA_RJT was received for the ABTS rjt_vendorUnique = %u",
abt->fw.ba_rjt_vendorUnique);
ql_dbg(ql_dbg_async + ql_dbg_mbx, vha, 0xf09e,
"ba_rjt_reasonCodeExpl = %u, ba_rjt_reasonCode = %u\n",
abt->fw.ba_rjt_reasonCodeExpl, abt->fw.ba_rjt_reasonCode);
break;
case CS_COMPLETE:
ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0xf09f,
"IOCB request is completed successfully comp_status=%x\n",
comp_status);
break;
case CS_IOCB_ERROR:
ql_dbg(ql_dbg_async, vha, 0xf0a0,
"IOCB request is failed, comp_status=%x\n", comp_status);
break;
default:
ql_dbg(ql_dbg_async, vha, 0xf0a1,
"Invalid Abort IO IOCB Completion Status %x\n",
comp_status);
break;
}
}
inline void qla_wait_nvme_release_cmd_kref(srb_t *orig_sp)
{
if (!(ql2xabts_wait_nvme && QLA_ABTS_WAIT_ENABLED(orig_sp)))
return;
kref_put(&orig_sp->cmd_kref, orig_sp->put_fn);
}
static void qla_nvme_fc_format_rjt(void *buf, u8 ls_cmd, u8 reason,
u8 explanation, u8 vendor)
{
struct fcnvme_ls_rjt *rjt = buf;
rjt->w0.ls_cmd = FCNVME_LSDESC_RQST;
rjt->desc_list_len = fcnvme_lsdesc_len(sizeof(struct fcnvme_ls_rjt));
rjt->rqst.desc_tag = cpu_to_be32(FCNVME_LSDESC_RQST);
rjt->rqst.desc_len =
fcnvme_lsdesc_len(sizeof(struct fcnvme_lsdesc_rqst));
rjt->rqst.w0.ls_cmd = ls_cmd;
rjt->rjt.desc_tag = cpu_to_be32(FCNVME_LSDESC_RJT);
rjt->rjt.desc_len = fcnvme_lsdesc_len(sizeof(struct fcnvme_lsdesc_rjt));
rjt->rjt.reason_code = reason;
rjt->rjt.reason_explanation = explanation;
rjt->rjt.vendor = vendor;
}
static void qla_nvme_lsrjt_pt_iocb(struct scsi_qla_host *vha,
struct pt_ls4_request *lsrjt_iocb,
struct qla_nvme_lsrjt_pt_arg *a)
{
lsrjt_iocb->entry_type = PT_LS4_REQUEST;
lsrjt_iocb->entry_count = 1;
lsrjt_iocb->sys_define = 0;
lsrjt_iocb->entry_status = 0;
lsrjt_iocb->handle = QLA_SKIP_HANDLE;
lsrjt_iocb->nport_handle = a->nport_handle;
lsrjt_iocb->exchange_address = a->xchg_address;
lsrjt_iocb->vp_index = a->vp_idx;
lsrjt_iocb->control_flags = cpu_to_le16(a->control_flags);
put_unaligned_le64(a->tx_addr, &lsrjt_iocb->dsd[0].address);
lsrjt_iocb->dsd[0].length = cpu_to_le32(a->tx_byte_count);
lsrjt_iocb->tx_dseg_count = cpu_to_le16(1);
lsrjt_iocb->tx_byte_count = cpu_to_le32(a->tx_byte_count);
put_unaligned_le64(a->rx_addr, &lsrjt_iocb->dsd[1].address);
lsrjt_iocb->dsd[1].length = 0;
lsrjt_iocb->rx_dseg_count = 0;
lsrjt_iocb->rx_byte_count = 0;
}
static int
qla_nvme_ls_reject_iocb(struct scsi_qla_host *vha, struct qla_qpair *qp,
struct qla_nvme_lsrjt_pt_arg *a, bool is_xchg_terminate)
{
struct pt_ls4_request *lsrjt_iocb;
lsrjt_iocb = __qla2x00_alloc_iocbs(qp, NULL);
if (!lsrjt_iocb) {
ql_log(ql_log_warn, vha, 0x210e,
"qla2x00_alloc_iocbs failed.\n");
return QLA_FUNCTION_FAILED;
}
if (!is_xchg_terminate) {
qla_nvme_fc_format_rjt((void *)vha->hw->lsrjt.c, a->opcode,
a->reason, a->explanation, 0);
a->tx_byte_count = sizeof(struct fcnvme_ls_rjt);
a->tx_addr = vha->hw->lsrjt.cdma;
a->control_flags = CF_LS4_RESPONDER << CF_LS4_SHIFT;
ql_dbg(ql_dbg_unsol, vha, 0x211f,
"Sending nvme fc ls reject ox_id %04x op %04x\n",
a->ox_id, a->opcode);
ql_dump_buffer(ql_dbg_unsol + ql_dbg_verbose, vha, 0x210f,
vha->hw->lsrjt.c, sizeof(*vha->hw->lsrjt.c));
} else {
a->tx_byte_count = 0;
a->control_flags = CF_LS4_RESPONDER_TERM << CF_LS4_SHIFT;
ql_dbg(ql_dbg_unsol, vha, 0x2110,
"Terminate nvme ls xchg 0x%x\n", a->xchg_address);
}
qla_nvme_lsrjt_pt_iocb(vha, lsrjt_iocb, a);
/* flush iocb to mem before notifying hw doorbell */
wmb();
qla2x00_start_iocbs(vha, qp->req);
return 0;
}
/*
* qla2xxx_process_purls_pkt() - Pass-up Unsolicited
* Received FC-NVMe Link Service pkt to nvme_fc_rcv_ls_req().
* LLDD need to provide memory for response buffer, which
* will be used to reference the exchange corresponding
* to the LS when issuing an ls response. LLDD will have to free
* response buffer in lport->ops->xmt_ls_rsp().
*
* @vha: SCSI qla host
* @item: ptr to purex_item
*/
static void
qla2xxx_process_purls_pkt(struct scsi_qla_host *vha, struct purex_item *item)
{
struct qla_nvme_unsol_ctx *uctx = item->purls_context;
struct qla_nvme_lsrjt_pt_arg a;
int ret = 1;
#if (IS_ENABLED(CONFIG_NVME_FC))
ret = nvme_fc_rcv_ls_req(uctx->fcport->nvme_remote_port, &uctx->lsrsp,
&item->iocb, item->size);
#endif
if (ret) {
ql_dbg(ql_dbg_unsol, vha, 0x2125, "NVMe transport ls_req failed\n");
memset((void *)&a, 0, sizeof(a));
a.vp_idx = vha->vp_idx;
a.nport_handle = uctx->nport_handle;
a.xchg_address = uctx->exchange_address;
qla_nvme_ls_reject_iocb(vha, vha->hw->base_qpair, &a, true);
list_del(&uctx->elem);
kfree(uctx);
}
}
static scsi_qla_host_t *
qla2xxx_get_vha_from_vp_idx(struct qla_hw_data *ha, uint16_t vp_index)
{
scsi_qla_host_t *base_vha, *vha, *tvp;
unsigned long flags;
base_vha = pci_get_drvdata(ha->pdev);
if (!vp_index && !ha->num_vhosts)
return base_vha;
spin_lock_irqsave(&ha->vport_slock, flags);
list_for_each_entry_safe(vha, tvp, &ha->vp_list, list) {
if (vha->vp_idx == vp_index) {
spin_unlock_irqrestore(&ha->vport_slock, flags);
return vha;
}
}
spin_unlock_irqrestore(&ha->vport_slock, flags);
return NULL;
}
void qla2xxx_process_purls_iocb(void **pkt, struct rsp_que **rsp)
{
struct nvme_fc_remote_port *rport;
struct qla_nvme_rport *qla_rport;
struct qla_nvme_lsrjt_pt_arg a;
struct pt_ls4_rx_unsol *p = *pkt;
struct qla_nvme_unsol_ctx *uctx;
struct rsp_que *rsp_q = *rsp;
struct qla_hw_data *ha;
scsi_qla_host_t *vha;
fc_port_t *fcport = NULL;
struct purex_item *item;
port_id_t d_id = {0};
port_id_t id = {0};
u8 *opcode;
bool xmt_reject = false;
ha = rsp_q->hw;
vha = qla2xxx_get_vha_from_vp_idx(ha, p->vp_index);
if (!vha) {
ql_log(ql_log_warn, NULL, 0x2110, "Invalid vp index %d\n", p->vp_index);
WARN_ON_ONCE(1);
return;
}
memset((void *)&a, 0, sizeof(a));
opcode = (u8 *)&p->payload[0];
a.opcode = opcode[3];
a.vp_idx = p->vp_index;
a.nport_handle = p->nport_handle;
a.ox_id = p->ox_id;
a.xchg_address = p->exchange_address;
id.b.domain = p->s_id.domain;
id.b.area = p->s_id.area;
id.b.al_pa = p->s_id.al_pa;
d_id.b.domain = p->d_id[2];
d_id.b.area = p->d_id[1];
d_id.b.al_pa = p->d_id[0];
fcport = qla2x00_find_fcport_by_nportid(vha, &id, 0);
if (!fcport) {
ql_dbg(ql_dbg_unsol, vha, 0x211e,
"Failed to find sid=%06x did=%06x\n",
id.b24, d_id.b24);
a.reason = FCNVME_RJT_RC_INV_ASSOC;
a.explanation = FCNVME_RJT_EXP_NONE;
xmt_reject = true;
goto out;
}
rport = fcport->nvme_remote_port;
qla_rport = rport->private;
item = qla27xx_copy_multiple_pkt(vha, pkt, rsp, true, false);
if (!item) {
a.reason = FCNVME_RJT_RC_LOGIC;
a.explanation = FCNVME_RJT_EXP_NONE;
xmt_reject = true;
goto out;
}
uctx = kzalloc(sizeof(*uctx), GFP_ATOMIC);
if (!uctx) {
ql_log(ql_log_info, vha, 0x2126, "Failed allocate memory\n");
a.reason = FCNVME_RJT_RC_LOGIC;
a.explanation = FCNVME_RJT_EXP_NONE;
xmt_reject = true;
kfree(item);
goto out;
}
uctx->vha = vha;
uctx->fcport = fcport;
uctx->exchange_address = p->exchange_address;
uctx->nport_handle = p->nport_handle;
uctx->ox_id = p->ox_id;
qla_rport->uctx = uctx;
INIT_LIST_HEAD(&uctx->elem);
list_add_tail(&uctx->elem, &fcport->unsol_ctx_head);
item->purls_context = (void *)uctx;
ql_dbg(ql_dbg_unsol, vha, 0x2121,
"PURLS OP[%01x] size %d xchg addr 0x%x portid %06x\n",
item->iocb.iocb[3], item->size, uctx->exchange_address,
fcport->d_id.b24);
/* +48 0 1 2 3 4 5 6 7 8 9 A B C D E F
* ----- -----------------------------------------------
* 0000: 00 00 00 05 28 00 00 00 07 00 00 00 08 00 00 00
* 0010: ab ec 0f cc 00 00 8d 7d 05 00 00 00 10 00 00 00
* 0020: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
*/
ql_dump_buffer(ql_dbg_unsol + ql_dbg_verbose, vha, 0x2120,
&item->iocb, item->size);
qla24xx_queue_purex_item(vha, item, qla2xxx_process_purls_pkt);
out:
if (xmt_reject) {
qla_nvme_ls_reject_iocb(vha, (*rsp)->qpair, &a, false);
__qla_consume_iocb(vha, pkt, rsp);
}
}
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linux