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linux/drivers/scsi/qla2xxx/qla_target.c
Joe Carnuccio d5ff0eed3a scsi: qla2xxx: Fix crash due to NULL pointer dereference of ctx 
Fixes following signature in the stack trace:

BUG: unable to handle kernel NULL pointer dereference at 0000000000000374
IP: [<ffffffffa06ec8eb>] qla2x00_sp_free_dma+0xeb/0x2a0 [qla2xxx]

Cc: <stable@vger.kernel.org> # v4.10+
Signed-off-by: Joe Carnuccio <joe.carnuccio@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-05-24 21:55:51 -04:00

7011 lines
188 KiB
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/*
* qla_target.c SCSI LLD infrastructure for QLogic 22xx/23xx/24xx/25xx
*
* based on qla2x00t.c code:
*
* Copyright (C) 2004 - 2010 Vladislav Bolkhovitin <vst@vlnb.net>
* Copyright (C) 2004 - 2005 Leonid Stoljar
* Copyright (C) 2006 Nathaniel Clark <nate@misrule.us>
* Copyright (C) 2006 - 2010 ID7 Ltd.
*
* Forward port and refactoring to modern qla2xxx and target/configfs
*
* Copyright (C) 2010-2013 Nicholas A. Bellinger <nab@kernel.org>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, version 2
* of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/module.h>
#include <linux/init.h>
#include <linux/types.h>
#include <linux/blkdev.h>
#include <linux/interrupt.h>
#include <linux/pci.h>
#include <linux/delay.h>
#include <linux/list.h>
#include <linux/workqueue.h>
#include <asm/unaligned.h>
#include <scsi/scsi.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_tcq.h>
#include <target/target_core_base.h>
#include <target/target_core_fabric.h>
#include "qla_def.h"
#include "qla_target.h"
static int ql2xtgt_tape_enable;
module_param(ql2xtgt_tape_enable, int, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(ql2xtgt_tape_enable,
"Enables Sequence level error recovery (aka FC Tape). Default is 0 - no SLER. 1 - Enable SLER.");
static char *qlini_mode = QLA2XXX_INI_MODE_STR_ENABLED;
module_param(qlini_mode, charp, S_IRUGO);
MODULE_PARM_DESC(qlini_mode,
"Determines when initiator mode will be enabled. Possible values: "
"\"exclusive\" - initiator mode will be enabled on load, "
"disabled on enabling target mode and then on disabling target mode "
"enabled back; "
"\"disabled\" - initiator mode will never be enabled; "
"\"dual\" - Initiator Modes will be enabled. Target Mode can be activated "
"when ready "
"\"enabled\" (default) - initiator mode will always stay enabled.");
static int ql_dm_tgt_ex_pct = 50;
module_param(ql_dm_tgt_ex_pct, int, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(ql_dm_tgt_ex_pct,
"For Dual Mode (qlini_mode=dual), this parameter determines "
"the percentage of exchanges/cmds FW will allocate resources "
"for Target mode.");
int ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
static int temp_sam_status = SAM_STAT_BUSY;
/*
* From scsi/fc/fc_fcp.h
*/
enum fcp_resp_rsp_codes {
FCP_TMF_CMPL = 0,
FCP_DATA_LEN_INVALID = 1,
FCP_CMND_FIELDS_INVALID = 2,
FCP_DATA_PARAM_MISMATCH = 3,
FCP_TMF_REJECTED = 4,
FCP_TMF_FAILED = 5,
FCP_TMF_INVALID_LUN = 9,
};
/*
* fc_pri_ta from scsi/fc/fc_fcp.h
*/
#define FCP_PTA_SIMPLE 0 /* simple task attribute */
#define FCP_PTA_HEADQ 1 /* head of queue task attribute */
#define FCP_PTA_ORDERED 2 /* ordered task attribute */
#define FCP_PTA_ACA 4 /* auto. contingent allegiance */
#define FCP_PTA_MASK 7 /* mask for task attribute field */
#define FCP_PRI_SHIFT 3 /* priority field starts in bit 3 */
#define FCP_PRI_RESVD_MASK 0x80 /* reserved bits in priority field */
/*
* This driver calls qla2x00_alloc_iocbs() and qla2x00_issue_marker(), which
* must be called under HW lock and could unlock/lock it inside.
* It isn't an issue, since in the current implementation on the time when
* those functions are called:
*
* - Either context is IRQ and only IRQ handler can modify HW data,
* including rings related fields,
*
* - Or access to target mode variables from struct qla_tgt doesn't
* cross those functions boundaries, except tgt_stop, which
* additionally protected by irq_cmd_count.
*/
/* Predefs for callbacks handed to qla2xxx LLD */
static void qlt_24xx_atio_pkt(struct scsi_qla_host *ha,
struct atio_from_isp *pkt, uint8_t);
static void qlt_response_pkt(struct scsi_qla_host *ha, response_t *pkt);
static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun,
int fn, void *iocb, int flags);
static void qlt_send_term_exchange(struct scsi_qla_host *ha, struct qla_tgt_cmd
*cmd, struct atio_from_isp *atio, int ha_locked, int ul_abort);
static void qlt_abort_cmd_on_host_reset(struct scsi_qla_host *vha,
struct qla_tgt_cmd *cmd);
static void qlt_alloc_qfull_cmd(struct scsi_qla_host *vha,
struct atio_from_isp *atio, uint16_t status, int qfull);
static void qlt_disable_vha(struct scsi_qla_host *vha);
static void qlt_clear_tgt_db(struct qla_tgt *tgt);
static void qlt_send_notify_ack(struct scsi_qla_host *vha,
struct imm_ntfy_from_isp *ntfy,
uint32_t add_flags, uint16_t resp_code, int resp_code_valid,
uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan);
static void qlt_send_term_imm_notif(struct scsi_qla_host *vha,
struct imm_ntfy_from_isp *imm, int ha_locked);
static struct fc_port *qlt_create_sess(struct scsi_qla_host *vha,
fc_port_t *fcport, bool local);
void qlt_unreg_sess(struct fc_port *sess);
static void qlt_24xx_handle_abts(struct scsi_qla_host *,
struct abts_recv_from_24xx *);
/*
* Global Variables
*/
static struct kmem_cache *qla_tgt_mgmt_cmd_cachep;
static struct kmem_cache *qla_tgt_plogi_cachep;
static mempool_t *qla_tgt_mgmt_cmd_mempool;
static struct workqueue_struct *qla_tgt_wq;
static DEFINE_MUTEX(qla_tgt_mutex);
static LIST_HEAD(qla_tgt_glist);
static const char *prot_op_str(u32 prot_op)
{
switch (prot_op) {
case TARGET_PROT_NORMAL: return "NORMAL";
case TARGET_PROT_DIN_INSERT: return "DIN_INSERT";
case TARGET_PROT_DOUT_INSERT: return "DOUT_INSERT";
case TARGET_PROT_DIN_STRIP: return "DIN_STRIP";
case TARGET_PROT_DOUT_STRIP: return "DOUT_STRIP";
case TARGET_PROT_DIN_PASS: return "DIN_PASS";
case TARGET_PROT_DOUT_PASS: return "DOUT_PASS";
default: return "UNKNOWN";
}
}
/* This API intentionally takes dest as a parameter, rather than returning
* int value to avoid caller forgetting to issue wmb() after the store */
void qlt_do_generation_tick(struct scsi_qla_host *vha, int *dest)
{
scsi_qla_host_t *base_vha = pci_get_drvdata(vha->hw->pdev);
*dest = atomic_inc_return(&base_vha->generation_tick);
/* memory barrier */
wmb();
}
/* Might release hw lock, then reaquire!! */
static inline int qlt_issue_marker(struct scsi_qla_host *vha, int vha_locked)
{
/* Send marker if required */
if (unlikely(vha->marker_needed != 0)) {
int rc = qla2x00_issue_marker(vha, vha_locked);
if (rc != QLA_SUCCESS) {
ql_dbg(ql_dbg_tgt, vha, 0xe03d,
"qla_target(%d): issue_marker() failed\n",
vha->vp_idx);
}
return rc;
}
return QLA_SUCCESS;
}
static inline
struct scsi_qla_host *qlt_find_host_by_d_id(struct scsi_qla_host *vha,
uint8_t *d_id)
{
struct scsi_qla_host *host;
uint32_t key = 0;
if ((vha->d_id.b.area == d_id[1]) && (vha->d_id.b.domain == d_id[0]) &&
(vha->d_id.b.al_pa == d_id[2]))
return vha;
key = (uint32_t)d_id[0] << 16;
key |= (uint32_t)d_id[1] << 8;
key |= (uint32_t)d_id[2];
host = btree_lookup32(&vha->hw->tgt.host_map, key);
if (!host)
ql_dbg(ql_dbg_tgt_mgt, vha, 0xffff,
"Unable to find host %06x\n", key);
return host;
}
static inline
struct scsi_qla_host *qlt_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->tgt.tgt_vp_map == NULL);
if (likely(test_bit(vp_idx, ha->vp_idx_map)))
return ha->tgt.tgt_vp_map[vp_idx].vha;
return NULL;
}
static inline void qlt_incr_num_pend_cmds(struct scsi_qla_host *vha)
{
unsigned long flags;
spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
vha->hw->tgt.num_pend_cmds++;
if (vha->hw->tgt.num_pend_cmds > vha->qla_stats.stat_max_pend_cmds)
vha->qla_stats.stat_max_pend_cmds =
vha->hw->tgt.num_pend_cmds;
spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
}
static inline void qlt_decr_num_pend_cmds(struct scsi_qla_host *vha)
{
unsigned long flags;
spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
vha->hw->tgt.num_pend_cmds--;
spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
}
static void qlt_queue_unknown_atio(scsi_qla_host_t *vha,
struct atio_from_isp *atio, uint8_t ha_locked)
{
struct qla_tgt_sess_op *u;
struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
unsigned long flags;
if (tgt->tgt_stop) {
ql_dbg(ql_dbg_async, vha, 0xffff,
"qla_target(%d): dropping unknown ATIO_TYPE7, "
"because tgt is being stopped", vha->vp_idx);
goto out_term;
}
u = kzalloc(sizeof(*u), GFP_ATOMIC);
if (u == NULL) {
ql_dbg(ql_dbg_async, vha, 0xffff,
"Alloc of struct unknown_atio (size %zd) failed", sizeof(*u));
/* It should be harmless and on the next retry should work well */
goto out_term;
}
u->vha = vha;
memcpy(&u->atio, atio, sizeof(*atio));
INIT_LIST_HEAD(&u->cmd_list);
spin_lock_irqsave(&vha->cmd_list_lock, flags);
list_add_tail(&u->cmd_list, &vha->unknown_atio_list);
spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
schedule_delayed_work(&vha->unknown_atio_work, 1);
out:
return;
out_term:
qlt_send_term_exchange(vha, NULL, atio, ha_locked, 0);
goto out;
}
static void qlt_try_to_dequeue_unknown_atios(struct scsi_qla_host *vha,
uint8_t ha_locked)
{
struct qla_tgt_sess_op *u, *t;
scsi_qla_host_t *host;
struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
unsigned long flags;
uint8_t queued = 0;
list_for_each_entry_safe(u, t, &vha->unknown_atio_list, cmd_list) {
if (u->aborted) {
ql_dbg(ql_dbg_async, vha, 0xffff,
"Freeing unknown %s %p, because of Abort",
"ATIO_TYPE7", u);
qlt_send_term_exchange(vha, NULL, &u->atio,
ha_locked, 0);
goto abort;
}
host = qlt_find_host_by_d_id(vha, u->atio.u.isp24.fcp_hdr.d_id);
if (host != NULL) {
ql_dbg(ql_dbg_async, vha, 0xffff,
"Requeuing unknown ATIO_TYPE7 %p", u);
qlt_24xx_atio_pkt(host, &u->atio, ha_locked);
} else if (tgt->tgt_stop) {
ql_dbg(ql_dbg_async, vha, 0xffff,
"Freeing unknown %s %p, because tgt is being stopped",
"ATIO_TYPE7", u);
qlt_send_term_exchange(vha, NULL, &u->atio,
ha_locked, 0);
} else {
ql_dbg(ql_dbg_async, vha, 0xffff,
"u %p, vha %p, host %p, sched again..", u,
vha, host);
if (!queued) {
queued = 1;
schedule_delayed_work(&vha->unknown_atio_work,
1);
}
continue;
}
abort:
spin_lock_irqsave(&vha->cmd_list_lock, flags);
list_del(&u->cmd_list);
spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
kfree(u);
}
}
void qlt_unknown_atio_work_fn(struct work_struct *work)
{
struct scsi_qla_host *vha = container_of(to_delayed_work(work),
struct scsi_qla_host, unknown_atio_work);
qlt_try_to_dequeue_unknown_atios(vha, 0);
}
static bool qlt_24xx_atio_pkt_all_vps(struct scsi_qla_host *vha,
struct atio_from_isp *atio, uint8_t ha_locked)
{
ql_dbg(ql_dbg_tgt, vha, 0xe072,
"%s: qla_target(%d): type %x ox_id %04x\n",
__func__, vha->vp_idx, atio->u.raw.entry_type,
be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id));
switch (atio->u.raw.entry_type) {
case ATIO_TYPE7:
{
struct scsi_qla_host *host = qlt_find_host_by_d_id(vha,
atio->u.isp24.fcp_hdr.d_id);
if (unlikely(NULL == host)) {
ql_dbg(ql_dbg_tgt, vha, 0xe03e,
"qla_target(%d): Received ATIO_TYPE7 "
"with unknown d_id %x:%x:%x\n", vha->vp_idx,
atio->u.isp24.fcp_hdr.d_id[0],
atio->u.isp24.fcp_hdr.d_id[1],
atio->u.isp24.fcp_hdr.d_id[2]);
qlt_queue_unknown_atio(vha, atio, ha_locked);
break;
}
if (unlikely(!list_empty(&vha->unknown_atio_list)))
qlt_try_to_dequeue_unknown_atios(vha, ha_locked);
qlt_24xx_atio_pkt(host, atio, ha_locked);
break;
}
case IMMED_NOTIFY_TYPE:
{
struct scsi_qla_host *host = vha;
struct imm_ntfy_from_isp *entry =
(struct imm_ntfy_from_isp *)atio;
if ((entry->u.isp24.vp_index != 0xFF) &&
(entry->u.isp24.nport_handle != 0xFFFF)) {
host = qlt_find_host_by_vp_idx(vha,
entry->u.isp24.vp_index);
if (unlikely(!host)) {
ql_dbg(ql_dbg_tgt, vha, 0xe03f,
"qla_target(%d): Received "
"ATIO (IMMED_NOTIFY_TYPE) "
"with unknown vp_index %d\n",
vha->vp_idx, entry->u.isp24.vp_index);
break;
}
}
qlt_24xx_atio_pkt(host, atio, ha_locked);
break;
}
case VP_RPT_ID_IOCB_TYPE:
qla24xx_report_id_acquisition(vha,
(struct vp_rpt_id_entry_24xx *)atio);
break;
case ABTS_RECV_24XX:
{
struct abts_recv_from_24xx *entry =
(struct abts_recv_from_24xx *)atio;
struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
entry->vp_index);
unsigned long flags;
if (unlikely(!host)) {
ql_dbg(ql_dbg_tgt, vha, 0xffff,
"qla_target(%d): Response pkt (ABTS_RECV_24XX) "
"received, with unknown vp_index %d\n",
vha->vp_idx, entry->vp_index);
break;
}
if (!ha_locked)
spin_lock_irqsave(&host->hw->hardware_lock, flags);
qlt_24xx_handle_abts(host, (struct abts_recv_from_24xx *)atio);
if (!ha_locked)
spin_unlock_irqrestore(&host->hw->hardware_lock, flags);
break;
}
/* case PUREX_IOCB_TYPE: ql2xmvasynctoatio */
default:
ql_dbg(ql_dbg_tgt, vha, 0xe040,
"qla_target(%d): Received unknown ATIO atio "
"type %x\n", vha->vp_idx, atio->u.raw.entry_type);
break;
}
return false;
}
void qlt_response_pkt_all_vps(struct scsi_qla_host *vha, response_t *pkt)
{
switch (pkt->entry_type) {
case CTIO_CRC2:
ql_dbg(ql_dbg_tgt, vha, 0xe073,
"qla_target(%d):%s: CRC2 Response pkt\n",
vha->vp_idx, __func__);
case CTIO_TYPE7:
{
struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
entry->vp_index);
if (unlikely(!host)) {
ql_dbg(ql_dbg_tgt, vha, 0xe041,
"qla_target(%d): Response pkt (CTIO_TYPE7) "
"received, with unknown vp_index %d\n",
vha->vp_idx, entry->vp_index);
break;
}
qlt_response_pkt(host, pkt);
break;
}
case IMMED_NOTIFY_TYPE:
{
struct scsi_qla_host *host = vha;
struct imm_ntfy_from_isp *entry =
(struct imm_ntfy_from_isp *)pkt;
host = qlt_find_host_by_vp_idx(vha, entry->u.isp24.vp_index);
if (unlikely(!host)) {
ql_dbg(ql_dbg_tgt, vha, 0xe042,
"qla_target(%d): Response pkt (IMMED_NOTIFY_TYPE) "
"received, with unknown vp_index %d\n",
vha->vp_idx, entry->u.isp24.vp_index);
break;
}
qlt_response_pkt(host, pkt);
break;
}
case NOTIFY_ACK_TYPE:
{
struct scsi_qla_host *host = vha;
struct nack_to_isp *entry = (struct nack_to_isp *)pkt;
if (0xFF != entry->u.isp24.vp_index) {
host = qlt_find_host_by_vp_idx(vha,
entry->u.isp24.vp_index);
if (unlikely(!host)) {
ql_dbg(ql_dbg_tgt, vha, 0xe043,
"qla_target(%d): Response "
"pkt (NOTIFY_ACK_TYPE) "
"received, with unknown "
"vp_index %d\n", vha->vp_idx,
entry->u.isp24.vp_index);
break;
}
}
qlt_response_pkt(host, pkt);
break;
}
case ABTS_RECV_24XX:
{
struct abts_recv_from_24xx *entry =
(struct abts_recv_from_24xx *)pkt;
struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
entry->vp_index);
if (unlikely(!host)) {
ql_dbg(ql_dbg_tgt, vha, 0xe044,
"qla_target(%d): Response pkt "
"(ABTS_RECV_24XX) received, with unknown "
"vp_index %d\n", vha->vp_idx, entry->vp_index);
break;
}
qlt_response_pkt(host, pkt);
break;
}
case ABTS_RESP_24XX:
{
struct abts_resp_to_24xx *entry =
(struct abts_resp_to_24xx *)pkt;
struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
entry->vp_index);
if (unlikely(!host)) {
ql_dbg(ql_dbg_tgt, vha, 0xe045,
"qla_target(%d): Response pkt "
"(ABTS_RECV_24XX) received, with unknown "
"vp_index %d\n", vha->vp_idx, entry->vp_index);
break;
}
qlt_response_pkt(host, pkt);
break;
}
default:
qlt_response_pkt(vha, pkt);
break;
}
}
/*
* All qlt_plogi_ack_t operations are protected by hardware_lock
*/
static int qla24xx_post_nack_work(struct scsi_qla_host *vha, fc_port_t *fcport,
struct imm_ntfy_from_isp *ntfy, int type)
{
struct qla_work_evt *e;
e = qla2x00_alloc_work(vha, QLA_EVT_NACK);
if (!e)
return QLA_FUNCTION_FAILED;
e->u.nack.fcport = fcport;
e->u.nack.type = type;
memcpy(e->u.nack.iocb, ntfy, sizeof(struct imm_ntfy_from_isp));
return qla2x00_post_work(vha, e);
}
static
void qla2x00_async_nack_sp_done(void *s, int res)
{
struct srb *sp = (struct srb *)s;
struct scsi_qla_host *vha = sp->vha;
unsigned long flags;
ql_dbg(ql_dbg_disc, vha, 0xffff,
"Async done-%s res %x %8phC type %d\n",
sp->name, res, sp->fcport->port_name, sp->type);
spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
sp->fcport->flags &= ~FCF_ASYNC_SENT;
sp->fcport->chip_reset = vha->hw->chip_reset;
switch (sp->type) {
case SRB_NACK_PLOGI:
sp->fcport->login_gen++;
sp->fcport->fw_login_state = DSC_LS_PLOGI_COMP;
sp->fcport->logout_on_delete = 1;
sp->fcport->plogi_nack_done_deadline = jiffies + HZ;
break;
case SRB_NACK_PRLI:
sp->fcport->fw_login_state = DSC_LS_PRLI_COMP;
sp->fcport->deleted = 0;
if (!sp->fcport->login_succ &&
!IS_SW_RESV_ADDR(sp->fcport->d_id)) {
sp->fcport->login_succ = 1;
vha->fcport_count++;
if (!IS_IIDMA_CAPABLE(vha->hw) ||
!vha->hw->flags.gpsc_supported) {
ql_dbg(ql_dbg_disc, vha, 0xffff,
"%s %d %8phC post upd_fcport fcp_cnt %d\n",
__func__, __LINE__,
sp->fcport->port_name,
vha->fcport_count);
qla24xx_post_upd_fcport_work(vha, sp->fcport);
} else {
ql_dbg(ql_dbg_disc, vha, 0xffff,
"%s %d %8phC post gpsc fcp_cnt %d\n",
__func__, __LINE__,
sp->fcport->port_name,
vha->fcport_count);
qla24xx_post_gpsc_work(vha, sp->fcport);
}
}
break;
case SRB_NACK_LOGO:
sp->fcport->login_gen++;
sp->fcport->fw_login_state = DSC_LS_PORT_UNAVAIL;
qlt_logo_completion_handler(sp->fcport, MBS_COMMAND_COMPLETE);
break;
}
spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
sp->free(sp);
}
int qla24xx_async_notify_ack(scsi_qla_host_t *vha, fc_port_t *fcport,
struct imm_ntfy_from_isp *ntfy, int type)
{
int rval = QLA_FUNCTION_FAILED;
srb_t *sp;
char *c = NULL;
fcport->flags |= FCF_ASYNC_SENT;
switch (type) {
case SRB_NACK_PLOGI:
fcport->fw_login_state = DSC_LS_PLOGI_PEND;
c = "PLOGI";
break;
case SRB_NACK_PRLI:
fcport->fw_login_state = DSC_LS_PRLI_PEND;
fcport->deleted = 0;
c = "PRLI";
break;
case SRB_NACK_LOGO:
fcport->fw_login_state = DSC_LS_LOGO_PEND;
c = "LOGO";
break;
}
sp = qla2x00_get_sp(vha, fcport, GFP_ATOMIC);
if (!sp)
goto done;
sp->type = type;
sp->name = "nack";
qla2x00_init_timer(sp, qla2x00_get_async_timeout(vha)+2);
sp->u.iocb_cmd.u.nack.ntfy = ntfy;
sp->done = qla2x00_async_nack_sp_done;
rval = qla2x00_start_sp(sp);
if (rval != QLA_SUCCESS)
goto done_free_sp;
ql_dbg(ql_dbg_disc, vha, 0xffff,
"Async-%s %8phC hndl %x %s\n",
sp->name, fcport->port_name, sp->handle, c);
return rval;
done_free_sp:
sp->free(sp);
done:
fcport->flags &= ~FCF_ASYNC_SENT;
return rval;
}
void qla24xx_do_nack_work(struct scsi_qla_host *vha, struct qla_work_evt *e)
{
fc_port_t *t;
unsigned long flags;
switch (e->u.nack.type) {
case SRB_NACK_PRLI:
mutex_lock(&vha->vha_tgt.tgt_mutex);
t = qlt_create_sess(vha, e->u.nack.fcport, 0);
mutex_unlock(&vha->vha_tgt.tgt_mutex);
if (t) {
ql_log(ql_log_info, vha, 0xffff,
"%s create sess success %p", __func__, t);
spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
/* create sess has an extra kref */
vha->hw->tgt.tgt_ops->put_sess(e->u.nack.fcport);
spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
}
break;
}
qla24xx_async_notify_ack(vha, e->u.nack.fcport,
(struct imm_ntfy_from_isp*)e->u.nack.iocb, e->u.nack.type);
}
void qla24xx_delete_sess_fn(struct work_struct *work)
{
fc_port_t *fcport = container_of(work, struct fc_port, del_work);
struct qla_hw_data *ha = fcport->vha->hw;
unsigned long flags;
spin_lock_irqsave(&ha->tgt.sess_lock, flags);
if (fcport->se_sess) {
ha->tgt.tgt_ops->shutdown_sess(fcport);
ha->tgt.tgt_ops->put_sess(fcport);
} else {
qlt_unreg_sess(fcport);
}
spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
}
/*
* Called from qla2x00_reg_remote_port()
*/
void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport)
{
struct qla_hw_data *ha = vha->hw;
struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
struct fc_port *sess = fcport;
unsigned long flags;
if (!vha->hw->tgt.tgt_ops)
return;
spin_lock_irqsave(&ha->tgt.sess_lock, flags);
if (tgt->tgt_stop) {
spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
return;
}
if (fcport->disc_state == DSC_DELETE_PEND) {
spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
return;
}
if (!sess->se_sess) {
spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
mutex_lock(&vha->vha_tgt.tgt_mutex);
sess = qlt_create_sess(vha, fcport, false);
mutex_unlock(&vha->vha_tgt.tgt_mutex);
spin_lock_irqsave(&ha->tgt.sess_lock, flags);
} else {
if (fcport->fw_login_state == DSC_LS_PRLI_COMP) {
spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
return;
}
if (!kref_get_unless_zero(&sess->sess_kref)) {
ql_dbg(ql_dbg_disc, vha, 0xffff,
"%s: kref_get fail sess %8phC \n",
__func__, sess->port_name);
spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
return;
}
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04c,
"qla_target(%u): %ssession for port %8phC "
"(loop ID %d) reappeared\n", vha->vp_idx,
sess->local ? "local " : "", sess->port_name, sess->loop_id);
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf007,
"Reappeared sess %p\n", sess);
ha->tgt.tgt_ops->update_sess(sess, fcport->d_id,
fcport->loop_id,
(fcport->flags & FCF_CONF_COMP_SUPPORTED));
}
if (sess && sess->local) {
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04d,
"qla_target(%u): local session for "
"port %8phC (loop ID %d) became global\n", vha->vp_idx,
fcport->port_name, sess->loop_id);
sess->local = 0;
}
ha->tgt.tgt_ops->put_sess(sess);
spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
}
/*
* This is a zero-base ref-counting solution, since hardware_lock
* guarantees that ref_count is not modified concurrently.
* Upon successful return content of iocb is undefined
*/
static struct qlt_plogi_ack_t *
qlt_plogi_ack_find_add(struct scsi_qla_host *vha, port_id_t *id,
struct imm_ntfy_from_isp *iocb)
{
struct qlt_plogi_ack_t *pla;
list_for_each_entry(pla, &vha->plogi_ack_list, list) {
if (pla->id.b24 == id->b24) {
qlt_send_term_imm_notif(vha, &pla->iocb, 1);
memcpy(&pla->iocb, iocb, sizeof(pla->iocb));
return pla;
}
}
pla = kmem_cache_zalloc(qla_tgt_plogi_cachep, GFP_ATOMIC);
if (!pla) {
ql_dbg(ql_dbg_async, vha, 0x5088,
"qla_target(%d): Allocation of plogi_ack failed\n",
vha->vp_idx);
return NULL;
}
memcpy(&pla->iocb, iocb, sizeof(pla->iocb));
pla->id = *id;
list_add_tail(&pla->list, &vha->plogi_ack_list);
return pla;
}
void qlt_plogi_ack_unref(struct scsi_qla_host *vha,
struct qlt_plogi_ack_t *pla)
{
struct imm_ntfy_from_isp *iocb = &pla->iocb;
port_id_t port_id;
uint16_t loop_id;
fc_port_t *fcport = pla->fcport;
BUG_ON(!pla->ref_count);
pla->ref_count--;
if (pla->ref_count)
return;
ql_dbg(ql_dbg_disc, vha, 0x5089,
"Sending PLOGI ACK to wwn %8phC s_id %02x:%02x:%02x loop_id %#04x"
" exch %#x ox_id %#x\n", iocb->u.isp24.port_name,
iocb->u.isp24.port_id[2], iocb->u.isp24.port_id[1],
iocb->u.isp24.port_id[0],
le16_to_cpu(iocb->u.isp24.nport_handle),
iocb->u.isp24.exchange_address, iocb->ox_id);
port_id.b.domain = iocb->u.isp24.port_id[2];
port_id.b.area = iocb->u.isp24.port_id[1];
port_id.b.al_pa = iocb->u.isp24.port_id[0];
port_id.b.rsvd_1 = 0;
loop_id = le16_to_cpu(iocb->u.isp24.nport_handle);
fcport->loop_id = loop_id;
fcport->d_id = port_id;
qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PLOGI);
list_for_each_entry(fcport, &vha->vp_fcports, list) {
if (fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] == pla)
fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL;
if (fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] == pla)
fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL;
}
list_del(&pla->list);
kmem_cache_free(qla_tgt_plogi_cachep, pla);
}
void
qlt_plogi_ack_link(struct scsi_qla_host *vha, struct qlt_plogi_ack_t *pla,
struct fc_port *sess, enum qlt_plogi_link_t link)
{
struct imm_ntfy_from_isp *iocb = &pla->iocb;
/* Inc ref_count first because link might already be pointing at pla */
pla->ref_count++;
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf097,
"Linking sess %p [%d] wwn %8phC with PLOGI ACK to wwn %8phC"
" s_id %02x:%02x:%02x, ref=%d pla %p link %d\n",
sess, link, sess->port_name,
iocb->u.isp24.port_name, iocb->u.isp24.port_id[2],
iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0],
pla->ref_count, pla, link);
if (sess->plogi_link[link])
qlt_plogi_ack_unref(vha, sess->plogi_link[link]);
if (link == QLT_PLOGI_LINK_SAME_WWN)
pla->fcport = sess;
sess->plogi_link[link] = pla;
}
typedef struct {
/* These fields must be initialized by the caller */
port_id_t id;
/*
* number of cmds dropped while we were waiting for
* initiator to ack LOGO initialize to 1 if LOGO is
* triggered by a command, otherwise, to 0
*/
int cmd_count;
/* These fields are used by callee */
struct list_head list;
} qlt_port_logo_t;
static void
qlt_send_first_logo(struct scsi_qla_host *vha, qlt_port_logo_t *logo)
{
qlt_port_logo_t *tmp;
int res;
mutex_lock(&vha->vha_tgt.tgt_mutex);
list_for_each_entry(tmp, &vha->logo_list, list) {
if (tmp->id.b24 == logo->id.b24) {
tmp->cmd_count += logo->cmd_count;
mutex_unlock(&vha->vha_tgt.tgt_mutex);
return;
}
}
list_add_tail(&logo->list, &vha->logo_list);
mutex_unlock(&vha->vha_tgt.tgt_mutex);
res = qla24xx_els_dcmd_iocb(vha, ELS_DCMD_LOGO, logo->id);
mutex_lock(&vha->vha_tgt.tgt_mutex);
list_del(&logo->list);
mutex_unlock(&vha->vha_tgt.tgt_mutex);
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf098,
"Finished LOGO to %02x:%02x:%02x, dropped %d cmds, res = %#x\n",
logo->id.b.domain, logo->id.b.area, logo->id.b.al_pa,
logo->cmd_count, res);
}
static void qlt_free_session_done(struct work_struct *work)
{
struct fc_port *sess = container_of(work, struct fc_port,
free_work);
struct qla_tgt *tgt = sess->tgt;
struct scsi_qla_host *vha = sess->vha;
struct qla_hw_data *ha = vha->hw;
unsigned long flags;
bool logout_started = false;
struct event_arg ea;
scsi_qla_host_t *base_vha;
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf084,
"%s: se_sess %p / sess %p from port %8phC loop_id %#04x"
" s_id %02x:%02x:%02x logout %d keep %d els_logo %d\n",
__func__, sess->se_sess, sess, sess->port_name, sess->loop_id,
sess->d_id.b.domain, sess->d_id.b.area, sess->d_id.b.al_pa,
sess->logout_on_delete, sess->keep_nport_handle,
sess->send_els_logo);
if (!IS_SW_RESV_ADDR(sess->d_id)) {
if (sess->send_els_logo) {
qlt_port_logo_t logo;
logo.id = sess->d_id;
logo.cmd_count = 0;
qlt_send_first_logo(vha, &logo);
}
if (sess->logout_on_delete) {
int rc;
rc = qla2x00_post_async_logout_work(vha, sess, NULL);
if (rc != QLA_SUCCESS)
ql_log(ql_log_warn, vha, 0xf085,
"Schedule logo failed sess %p rc %d\n",
sess, rc);
else
logout_started = true;
}
}
/*
* Release the target session for FC Nexus from fabric module code.
*/
if (sess->se_sess != NULL)
ha->tgt.tgt_ops->free_session(sess);
if (logout_started) {
bool traced = false;
while (!ACCESS_ONCE(sess->logout_completed)) {
if (!traced) {
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf086,
"%s: waiting for sess %p logout\n",
__func__, sess);
traced = true;
}
msleep(100);
}
ql_dbg(ql_dbg_disc, vha, 0xf087,
"%s: sess %p logout completed\n",__func__, sess);
}
if (sess->logo_ack_needed) {
sess->logo_ack_needed = 0;
qla24xx_async_notify_ack(vha, sess,
(struct imm_ntfy_from_isp *)sess->iocb, SRB_NACK_LOGO);
}
spin_lock_irqsave(&ha->tgt.sess_lock, flags);
if (sess->se_sess) {
sess->se_sess = NULL;
if (tgt && !IS_SW_RESV_ADDR(sess->d_id))
tgt->sess_count--;
}
sess->disc_state = DSC_DELETED;
sess->fw_login_state = DSC_LS_PORT_UNAVAIL;
sess->deleted = QLA_SESS_DELETED;
sess->login_retry = vha->hw->login_retry_count;
if (sess->login_succ && !IS_SW_RESV_ADDR(sess->d_id)) {
vha->fcport_count--;
sess->login_succ = 0;
}
if (sess->chip_reset != sess->vha->hw->chip_reset)
qla2x00_clear_loop_id(sess);
if (sess->conflict) {
sess->conflict->login_pause = 0;
sess->conflict = NULL;
if (!test_bit(UNLOADING, &vha->dpc_flags))
set_bit(RELOGIN_NEEDED, &vha->dpc_flags);
}
{
struct qlt_plogi_ack_t *own =
sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN];
struct qlt_plogi_ack_t *con =
sess->plogi_link[QLT_PLOGI_LINK_CONFLICT];
struct imm_ntfy_from_isp *iocb;
if (con) {
iocb = &con->iocb;
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf099,
"se_sess %p / sess %p port %8phC is gone,"
" %s (ref=%d), releasing PLOGI for %8phC (ref=%d)\n",
sess->se_sess, sess, sess->port_name,
own ? "releasing own PLOGI" : "no own PLOGI pending",
own ? own->ref_count : -1,
iocb->u.isp24.port_name, con->ref_count);
qlt_plogi_ack_unref(vha, con);
sess->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL;
} else {
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09a,
"se_sess %p / sess %p port %8phC is gone, %s (ref=%d)\n",
sess->se_sess, sess, sess->port_name,
own ? "releasing own PLOGI" :
"no own PLOGI pending",
own ? own->ref_count : -1);
}
if (own) {
sess->fw_login_state = DSC_LS_PLOGI_PEND;
qlt_plogi_ack_unref(vha, own);
sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL;
}
}
spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf001,
"Unregistration of sess %p %8phC finished fcp_cnt %d\n",
sess, sess->port_name, vha->fcport_count);
if (tgt && (tgt->sess_count == 0))
wake_up_all(&tgt->waitQ);
if (vha->fcport_count == 0)
wake_up_all(&vha->fcport_waitQ);
base_vha = pci_get_drvdata(ha->pdev);
if (test_bit(PFLG_DRIVER_REMOVING, &base_vha->pci_flags))
return;
if (!tgt || !tgt->tgt_stop) {
memset(&ea, 0, sizeof(ea));
ea.event = FCME_DELETE_DONE;
ea.fcport = sess;
qla2x00_fcport_event_handler(vha, &ea);
}
}
/* ha->tgt.sess_lock supposed to be held on entry */
void qlt_unreg_sess(struct fc_port *sess)
{
struct scsi_qla_host *vha = sess->vha;
ql_dbg(ql_dbg_disc, sess->vha, 0xffff,
"%s sess %p for deletion %8phC\n",
__func__, sess, sess->port_name);
if (sess->se_sess)
vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess);
qla2x00_mark_device_lost(vha, sess, 1, 1);
sess->deleted = QLA_SESS_DELETION_IN_PROGRESS;
sess->disc_state = DSC_DELETE_PEND;
sess->last_rscn_gen = sess->rscn_gen;
sess->last_login_gen = sess->login_gen;
INIT_WORK(&sess->free_work, qlt_free_session_done);
schedule_work(&sess->free_work);
}
EXPORT_SYMBOL(qlt_unreg_sess);
static int qlt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd)
{
struct qla_hw_data *ha = vha->hw;
struct fc_port *sess = NULL;
uint16_t loop_id;
int res = 0;
struct imm_ntfy_from_isp *n = (struct imm_ntfy_from_isp *)iocb;
unsigned long flags;
loop_id = le16_to_cpu(n->u.isp24.nport_handle);
if (loop_id == 0xFFFF) {
/* Global event */
atomic_inc(&vha->vha_tgt.qla_tgt->tgt_global_resets_count);
spin_lock_irqsave(&ha->tgt.sess_lock, flags);
qlt_clear_tgt_db(vha->vha_tgt.qla_tgt);
spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
} else {
spin_lock_irqsave(&ha->tgt.sess_lock, flags);
sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
}
ql_dbg(ql_dbg_tgt, vha, 0xe000,
"Using sess for qla_tgt_reset: %p\n", sess);
if (!sess) {
res = -ESRCH;
return res;
}
ql_dbg(ql_dbg_tgt, vha, 0xe047,
"scsi(%ld): resetting (session %p from port %8phC mcmd %x, "
"loop_id %d)\n", vha->host_no, sess, sess->port_name,
mcmd, loop_id);
return qlt_issue_task_mgmt(sess, 0, mcmd, iocb, QLA24XX_MGMT_SEND_NACK);
}
static void qla24xx_chk_fcp_state(struct fc_port *sess)
{
if (sess->chip_reset != sess->vha->hw->chip_reset) {
sess->logout_on_delete = 0;
sess->logo_ack_needed = 0;
sess->fw_login_state = DSC_LS_PORT_UNAVAIL;
sess->scan_state = 0;
}
}
/* ha->tgt.sess_lock supposed to be held on entry */
void qlt_schedule_sess_for_deletion(struct fc_port *sess,
bool immediate)
{
struct qla_tgt *tgt = sess->tgt;
if (sess->disc_state == DSC_DELETE_PEND)
return;
if (sess->disc_state == DSC_DELETED) {
if (tgt && tgt->tgt_stop && (tgt->sess_count == 0))
wake_up_all(&tgt->waitQ);
if (sess->vha->fcport_count == 0)
wake_up_all(&sess->vha->fcport_waitQ);
if (!sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] &&
!sess->plogi_link[QLT_PLOGI_LINK_CONFLICT])
return;
}
sess->disc_state = DSC_DELETE_PEND;
if (sess->deleted == QLA_SESS_DELETED)
sess->logout_on_delete = 0;
sess->deleted = QLA_SESS_DELETION_IN_PROGRESS;
qla24xx_chk_fcp_state(sess);
ql_dbg(ql_dbg_tgt, sess->vha, 0xe001,
"Scheduling sess %p for deletion\n", sess);
schedule_work(&sess->del_work);
}
void qlt_schedule_sess_for_deletion_lock(struct fc_port *sess)
{
unsigned long flags;
struct qla_hw_data *ha = sess->vha->hw;
spin_lock_irqsave(&ha->tgt.sess_lock, flags);
qlt_schedule_sess_for_deletion(sess, 1);
spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
}
/* ha->tgt.sess_lock supposed to be held on entry */
static void qlt_clear_tgt_db(struct qla_tgt *tgt)
{
struct fc_port *sess;
scsi_qla_host_t *vha = tgt->vha;
list_for_each_entry(sess, &vha->vp_fcports, list) {
if (sess->se_sess)
qlt_schedule_sess_for_deletion(sess, 1);
}
/* At this point tgt could be already dead */
}
static int qla24xx_get_loop_id(struct scsi_qla_host *vha, const uint8_t *s_id,
uint16_t *loop_id)
{
struct qla_hw_data *ha = vha->hw;
dma_addr_t gid_list_dma;
struct gid_list_info *gid_list;
char *id_iter;
int res, rc, i;
uint16_t entries;
gid_list = dma_alloc_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
&gid_list_dma, GFP_KERNEL);
if (!gid_list) {
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf044,
"qla_target(%d): DMA Alloc failed of %u\n",
vha->vp_idx, qla2x00_gid_list_size(ha));
return -ENOMEM;
}
/* Get list of logged in devices */
rc = qla24xx_gidlist_wait(vha, gid_list, gid_list_dma, &entries);
if (rc != QLA_SUCCESS) {
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf045,
"qla_target(%d): get_id_list() failed: %x\n",
vha->vp_idx, rc);
res = -EBUSY;
goto out_free_id_list;
}
id_iter = (char *)gid_list;
res = -ENOENT;
for (i = 0; i < entries; i++) {
struct gid_list_info *gid = (struct gid_list_info *)id_iter;
if ((gid->al_pa == s_id[2]) &&
(gid->area == s_id[1]) &&
(gid->domain == s_id[0])) {
*loop_id = le16_to_cpu(gid->loop_id);
res = 0;
break;
}
id_iter += ha->gid_list_info_size;
}
out_free_id_list:
dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
gid_list, gid_list_dma);
return res;
}
/*
* Adds an extra ref to allow to drop hw lock after adding sess to the list.
* Caller must put it.
*/
static struct fc_port *qlt_create_sess(
struct scsi_qla_host *vha,
fc_port_t *fcport,
bool local)
{
struct qla_hw_data *ha = vha->hw;
struct fc_port *sess = fcport;
unsigned long flags;
if (vha->vha_tgt.qla_tgt->tgt_stop)
return NULL;
if (fcport->se_sess) {
if (!kref_get_unless_zero(&sess->sess_kref)) {
ql_dbg(ql_dbg_disc, vha, 0xffff,
"%s: kref_get_unless_zero failed for %8phC\n",
__func__, sess->port_name);
return NULL;
}
return fcport;
}
sess->tgt = vha->vha_tgt.qla_tgt;
sess->local = local;
/*
* Under normal circumstances we want to logout from firmware when
* session eventually ends and release corresponding nport handle.
* In the exception cases (e.g. when new PLOGI is waiting) corresponding
* code will adjust these flags as necessary.
*/
sess->logout_on_delete = 1;
sess->keep_nport_handle = 0;
sess->logout_completed = 0;
if (ha->tgt.tgt_ops->check_initiator_node_acl(vha,
&fcport->port_name[0], sess) < 0) {
ql_dbg(ql_dbg_tgt_mgt, vha, 0xffff,
"(%d) %8phC check_initiator_node_acl failed\n",
vha->vp_idx, fcport->port_name);
return NULL;
} else {
kref_init(&fcport->sess_kref);
/*
* Take an extra reference to ->sess_kref here to handle
* fc_port access across ->tgt.sess_lock reaquire.
*/
if (!kref_get_unless_zero(&sess->sess_kref)) {
ql_dbg(ql_dbg_disc, vha, 0xffff,
"%s: kref_get_unless_zero failed for %8phC\n",
__func__, sess->port_name);
return NULL;
}
spin_lock_irqsave(&ha->tgt.sess_lock, flags);
if (!IS_SW_RESV_ADDR(sess->d_id))
vha->vha_tgt.qla_tgt->sess_count++;
qlt_do_generation_tick(vha, &sess->generation);
spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
}
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006,
"Adding sess %p se_sess %p to tgt %p sess_count %d\n",
sess, sess->se_sess, vha->vha_tgt.qla_tgt,
vha->vha_tgt.qla_tgt->sess_count);
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b,
"qla_target(%d): %ssession for wwn %8phC (loop_id %d, "
"s_id %x:%x:%x, confirmed completion %ssupported) added\n",
vha->vp_idx, local ? "local " : "", fcport->port_name,
fcport->loop_id, sess->d_id.b.domain, sess->d_id.b.area,
sess->d_id.b.al_pa, sess->conf_compl_supported ? "" : "not ");
return sess;
}
/*
* max_gen - specifies maximum session generation
* at which this deletion requestion is still valid
*/
void
qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport, int max_gen)
{
struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
struct fc_port *sess = fcport;
unsigned long flags;
if (!vha->hw->tgt.tgt_ops)
return;
if (!tgt)
return;
spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
if (tgt->tgt_stop) {
spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
return;
}
if (!sess->se_sess) {
spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
return;
}
if (max_gen - sess->generation < 0) {
spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf092,
"Ignoring stale deletion request for se_sess %p / sess %p"
" for port %8phC, req_gen %d, sess_gen %d\n",
sess->se_sess, sess, sess->port_name, max_gen,
sess->generation);
return;
}
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf008, "qla_tgt_fc_port_deleted %p", sess);
sess->local = 1;
qlt_schedule_sess_for_deletion(sess, false);
spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
}
static inline int test_tgt_sess_count(struct qla_tgt *tgt)
{
struct qla_hw_data *ha = tgt->ha;
unsigned long flags;
int res;
/*
* We need to protect against race, when tgt is freed before or
* inside wake_up()
*/
spin_lock_irqsave(&ha->tgt.sess_lock, flags);
ql_dbg(ql_dbg_tgt, tgt->vha, 0xe002,
"tgt %p, sess_count=%d\n",
tgt, tgt->sess_count);
res = (tgt->sess_count == 0);
spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
return res;
}
/* Called by tcm_qla2xxx configfs code */
int qlt_stop_phase1(struct qla_tgt *tgt)
{
struct scsi_qla_host *vha = tgt->vha;
struct qla_hw_data *ha = tgt->ha;
unsigned long flags;
mutex_lock(&qla_tgt_mutex);
if (!vha->fc_vport) {
struct Scsi_Host *sh = vha->host;
struct fc_host_attrs *fc_host = shost_to_fc_host(sh);
bool npiv_vports;
spin_lock_irqsave(sh->host_lock, flags);
npiv_vports = (fc_host->npiv_vports_inuse);
spin_unlock_irqrestore(sh->host_lock, flags);
if (npiv_vports) {
mutex_unlock(&qla_tgt_mutex);
return -EPERM;
}
}
if (tgt->tgt_stop || tgt->tgt_stopped) {
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04e,
"Already in tgt->tgt_stop or tgt_stopped state\n");
mutex_unlock(&qla_tgt_mutex);
return -EPERM;
}
ql_dbg(ql_dbg_tgt, vha, 0xe003, "Stopping target for host %ld(%p)\n",
vha->host_no, vha);
/*
* Mutex needed to sync with qla_tgt_fc_port_[added,deleted].
* Lock is needed, because we still can get an incoming packet.
*/
mutex_lock(&vha->vha_tgt.tgt_mutex);
spin_lock_irqsave(&ha->tgt.sess_lock, flags);
tgt->tgt_stop = 1;
qlt_clear_tgt_db(tgt);
spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
mutex_unlock(&vha->vha_tgt.tgt_mutex);
mutex_unlock(&qla_tgt_mutex);
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009,
"Waiting for sess works (tgt %p)", tgt);
spin_lock_irqsave(&tgt->sess_work_lock, flags);
while (!list_empty(&tgt->sess_works_list)) {
spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
flush_scheduled_work();
spin_lock_irqsave(&tgt->sess_work_lock, flags);
}
spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a,
"Waiting for tgt %p: sess_count=%d\n", tgt, tgt->sess_count);
wait_event(tgt->waitQ, test_tgt_sess_count(tgt));
/* Big hammer */
if (!ha->flags.host_shutting_down &&
(qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)))
qlt_disable_vha(vha);
/* Wait for sessions to clear out (just in case) */
wait_event(tgt->waitQ, test_tgt_sess_count(tgt));
return 0;
}
EXPORT_SYMBOL(qlt_stop_phase1);
/* Called by tcm_qla2xxx configfs code */
void qlt_stop_phase2(struct qla_tgt *tgt)
{
struct qla_hw_data *ha = tgt->ha;
scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
unsigned long flags;
if (tgt->tgt_stopped) {
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04f,
"Already in tgt->tgt_stopped state\n");
dump_stack();
return;
}
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00b,
"Waiting for %d IRQ commands to complete (tgt %p)",
tgt->irq_cmd_count, tgt);
mutex_lock(&vha->vha_tgt.tgt_mutex);
spin_lock_irqsave(&ha->hardware_lock, flags);
while ((tgt->irq_cmd_count != 0) || (tgt->atio_irq_cmd_count != 0)) {
spin_unlock_irqrestore(&ha->hardware_lock, flags);
udelay(2);
spin_lock_irqsave(&ha->hardware_lock, flags);
}
tgt->tgt_stop = 0;
tgt->tgt_stopped = 1;
spin_unlock_irqrestore(&ha->hardware_lock, flags);
mutex_unlock(&vha->vha_tgt.tgt_mutex);
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00c, "Stop of tgt %p finished",
tgt);
}
EXPORT_SYMBOL(qlt_stop_phase2);
/* Called from qlt_remove_target() -> qla2x00_remove_one() */
static void qlt_release(struct qla_tgt *tgt)
{
scsi_qla_host_t *vha = tgt->vha;
if ((vha->vha_tgt.qla_tgt != NULL) && !tgt->tgt_stopped)
qlt_stop_phase2(tgt);
vha->vha_tgt.qla_tgt = NULL;
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00d,
"Release of tgt %p finished\n", tgt);
kfree(tgt);
}
/* ha->hardware_lock supposed to be held on entry */
static int qlt_sched_sess_work(struct qla_tgt *tgt, int type,
const void *param, unsigned int param_size)
{
struct qla_tgt_sess_work_param *prm;
unsigned long flags;
prm = kzalloc(sizeof(*prm), GFP_ATOMIC);
if (!prm) {
ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf050,
"qla_target(%d): Unable to create session "
"work, command will be refused", 0);
return -ENOMEM;
}
ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00e,
"Scheduling work (type %d, prm %p)"
" to find session for param %p (size %d, tgt %p)\n",
type, prm, param, param_size, tgt);
prm->type = type;
memcpy(&prm->tm_iocb, param, param_size);
spin_lock_irqsave(&tgt->sess_work_lock, flags);
list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list);
spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
schedule_work(&tgt->sess_work);
return 0;
}
/*
* ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
*/
static void qlt_send_notify_ack(struct scsi_qla_host *vha,
struct imm_ntfy_from_isp *ntfy,
uint32_t add_flags, uint16_t resp_code, int resp_code_valid,
uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan)
{
struct qla_hw_data *ha = vha->hw;
request_t *pkt;
struct nack_to_isp *nack;
if (!ha->flags.fw_started)
return;
ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha);
/* Send marker if required */
if (qlt_issue_marker(vha, 1) != QLA_SUCCESS)
return;
pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
if (!pkt) {
ql_dbg(ql_dbg_tgt, vha, 0xe049,
"qla_target(%d): %s failed: unable to allocate "
"request packet\n", vha->vp_idx, __func__);
return;
}
if (vha->vha_tgt.qla_tgt != NULL)
vha->vha_tgt.qla_tgt->notify_ack_expected++;
pkt->entry_type = NOTIFY_ACK_TYPE;
pkt->entry_count = 1;
nack = (struct nack_to_isp *)pkt;
nack->ox_id = ntfy->ox_id;
nack->u.isp24.handle = QLA_TGT_SKIP_HANDLE;
nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle;
if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) {
nack->u.isp24.flags = ntfy->u.isp24.flags &
cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB);
}
nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
nack->u.isp24.status = ntfy->u.isp24.status;
nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle;
nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
nack->u.isp24.srr_flags = cpu_to_le16(srr_flags);
nack->u.isp24.srr_reject_code = srr_reject_code;
nack->u.isp24.srr_reject_code_expl = srr_explan;
nack->u.isp24.vp_index = ntfy->u.isp24.vp_index;
ql_dbg(ql_dbg_tgt, vha, 0xe005,
"qla_target(%d): Sending 24xx Notify Ack %d\n",
vha->vp_idx, nack->u.isp24.status);
/* Memory Barrier */
wmb();
qla2x00_start_iocbs(vha, vha->req);
}
/*
* ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
*/
static void qlt_24xx_send_abts_resp(struct scsi_qla_host *vha,
struct abts_recv_from_24xx *abts, uint32_t status,
bool ids_reversed)
{
struct qla_hw_data *ha = vha->hw;
struct abts_resp_to_24xx *resp;
uint32_t f_ctl;
uint8_t *p;
ql_dbg(ql_dbg_tgt, vha, 0xe006,
"Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n",
ha, abts, status);
/* Send marker if required */
if (qlt_issue_marker(vha, 1) != QLA_SUCCESS)
return;
resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs_ready(vha, NULL);
if (!resp) {
ql_dbg(ql_dbg_tgt, vha, 0xe04a,
"qla_target(%d): %s failed: unable to allocate "
"request packet", vha->vp_idx, __func__);
return;
}
resp->entry_type = ABTS_RESP_24XX;
resp->entry_count = 1;
resp->nport_handle = abts->nport_handle;
resp->vp_index = vha->vp_idx;
resp->sof_type = abts->sof_type;
resp->exchange_address = abts->exchange_address;
resp->fcp_hdr_le = abts->fcp_hdr_le;
f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP |
F_CTL_LAST_SEQ | F_CTL_END_SEQ |
F_CTL_SEQ_INITIATIVE);
p = (uint8_t *)&f_ctl;
resp->fcp_hdr_le.f_ctl[0] = *p++;
resp->fcp_hdr_le.f_ctl[1] = *p++;
resp->fcp_hdr_le.f_ctl[2] = *p;
if (ids_reversed) {
resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.d_id[0];
resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.d_id[1];
resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.d_id[2];
resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.s_id[0];
resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.s_id[1];
resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.s_id[2];
} else {
resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.s_id[0];
resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.s_id[1];
resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.s_id[2];
resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.d_id[0];
resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.d_id[1];
resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.d_id[2];
}
resp->exchange_addr_to_abort = abts->exchange_addr_to_abort;
if (status == FCP_TMF_CMPL) {
resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC;
resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID;
resp->payload.ba_acct.low_seq_cnt = 0x0000;
resp->payload.ba_acct.high_seq_cnt = 0xFFFF;
resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id;
resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id;
} else {
resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT;
resp->payload.ba_rjt.reason_code =
BA_RJT_REASON_CODE_UNABLE_TO_PERFORM;
/* Other bytes are zero */
}
vha->vha_tgt.qla_tgt->abts_resp_expected++;
/* Memory Barrier */
wmb();
qla2x00_start_iocbs(vha, vha->req);
}
/*
* ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
*/
static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha,
struct abts_resp_from_24xx_fw *entry)
{
struct ctio7_to_24xx *ctio;
ql_dbg(ql_dbg_tgt, vha, 0xe007,
"Sending retry TERM EXCH CTIO7 (ha=%p)\n", vha->hw);
/* Send marker if required */
if (qlt_issue_marker(vha, 1) != QLA_SUCCESS)
return;
ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs_ready(vha, NULL);
if (ctio == NULL) {
ql_dbg(ql_dbg_tgt, vha, 0xe04b,
"qla_target(%d): %s failed: unable to allocate "
"request packet\n", vha->vp_idx, __func__);
return;
}
/*
* We've got on entrance firmware's response on by us generated
* ABTS response. So, in it ID fields are reversed.
*/
ctio->entry_type = CTIO_TYPE7;
ctio->entry_count = 1;
ctio->nport_handle = entry->nport_handle;
ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
ctio->vp_index = vha->vp_idx;
ctio->initiator_id[0] = entry->fcp_hdr_le.d_id[0];
ctio->initiator_id[1] = entry->fcp_hdr_le.d_id[1];
ctio->initiator_id[2] = entry->fcp_hdr_le.d_id[2];
ctio->exchange_addr = entry->exchange_addr_to_abort;
ctio->u.status1.flags = cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 |
CTIO7_FLAGS_TERMINATE);
ctio->u.status1.ox_id = cpu_to_le16(entry->fcp_hdr_le.ox_id);
/* Memory Barrier */
wmb();
qla2x00_start_iocbs(vha, vha->req);
qlt_24xx_send_abts_resp(vha, (struct abts_recv_from_24xx *)entry,
FCP_TMF_CMPL, true);
}
static int abort_cmd_for_tag(struct scsi_qla_host *vha, uint32_t tag)
{
struct qla_tgt_sess_op *op;
struct qla_tgt_cmd *cmd;
spin_lock(&vha->cmd_list_lock);
list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
if (tag == op->atio.u.isp24.exchange_addr) {
op->aborted = true;
spin_unlock(&vha->cmd_list_lock);
return 1;
}
}
list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) {
if (tag == op->atio.u.isp24.exchange_addr) {
op->aborted = true;
spin_unlock(&vha->cmd_list_lock);
return 1;
}
}
list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
if (tag == cmd->atio.u.isp24.exchange_addr) {
cmd->aborted = 1;
spin_unlock(&vha->cmd_list_lock);
return 1;
}
}
spin_unlock(&vha->cmd_list_lock);
return 0;
}
/* drop cmds for the given lun
* XXX only looks for cmds on the port through which lun reset was recieved
* XXX does not go through the list of other port (which may have cmds
* for the same lun)
*/
static void abort_cmds_for_lun(struct scsi_qla_host *vha,
uint32_t lun, uint8_t *s_id)
{
struct qla_tgt_sess_op *op;
struct qla_tgt_cmd *cmd;
uint32_t key;
key = sid_to_key(s_id);
spin_lock(&vha->cmd_list_lock);
list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
uint32_t op_key;
uint32_t op_lun;
op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
op_lun = scsilun_to_int(
(struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun);
if (op_key == key && op_lun == lun)
op->aborted = true;
}
list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) {
uint32_t op_key;
u64 op_lun;
op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
op_lun = scsilun_to_int(
(struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun);
if (op_key == key && op_lun == lun)
op->aborted = true;
}
list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
uint32_t cmd_key;
uint32_t cmd_lun;
cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id);
cmd_lun = scsilun_to_int(
(struct scsi_lun *)&cmd->atio.u.isp24.fcp_cmnd.lun);
if (cmd_key == key && cmd_lun == lun)
cmd->aborted = 1;
}
spin_unlock(&vha->cmd_list_lock);
}
/* ha->hardware_lock supposed to be held on entry */
static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha,
struct abts_recv_from_24xx *abts, struct fc_port *sess)
{
struct qla_hw_data *ha = vha->hw;
struct se_session *se_sess = sess->se_sess;
struct qla_tgt_mgmt_cmd *mcmd;
struct se_cmd *se_cmd;
u32 lun = 0;
int rc;
bool found_lun = false;
unsigned long flags;
spin_lock_irqsave(&se_sess->sess_cmd_lock, flags);
list_for_each_entry(se_cmd, &se_sess->sess_cmd_list, se_cmd_list) {
struct qla_tgt_cmd *cmd =
container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
if (se_cmd->tag == abts->exchange_addr_to_abort) {
lun = cmd->unpacked_lun;
found_lun = true;
break;
}
}
spin_unlock_irqrestore(&se_sess->sess_cmd_lock, flags);
/* cmd not in LIO lists, look in qla list */
if (!found_lun) {
if (abort_cmd_for_tag(vha, abts->exchange_addr_to_abort)) {
/* send TASK_ABORT response immediately */
qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_CMPL, false);
return 0;
} else {
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf081,
"unable to find cmd in driver or LIO for tag 0x%x\n",
abts->exchange_addr_to_abort);
return -ENOENT;
}
}
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f,
"qla_target(%d): task abort (tag=%d)\n",
vha->vp_idx, abts->exchange_addr_to_abort);
mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
if (mcmd == NULL) {
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf051,
"qla_target(%d): %s: Allocation of ABORT cmd failed",
vha->vp_idx, __func__);
return -ENOMEM;
}
memset(mcmd, 0, sizeof(*mcmd));
mcmd->sess = sess;
memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts));
mcmd->reset_count = vha->hw->chip_reset;
mcmd->tmr_func = QLA_TGT_ABTS;
rc = ha->tgt.tgt_ops->handle_tmr(mcmd, lun, mcmd->tmr_func,
abts->exchange_addr_to_abort);
if (rc != 0) {
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf052,
"qla_target(%d): tgt_ops->handle_tmr()"
" failed: %d", vha->vp_idx, rc);
mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
return -EFAULT;
}
return 0;
}
/*
* ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
*/
static void qlt_24xx_handle_abts(struct scsi_qla_host *vha,
struct abts_recv_from_24xx *abts)
{
struct qla_hw_data *ha = vha->hw;
struct fc_port *sess;
uint32_t tag = abts->exchange_addr_to_abort;
uint8_t s_id[3];
int rc;
unsigned long flags;
if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) {
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053,
"qla_target(%d): ABTS: Abort Sequence not "
"supported\n", vha->vp_idx);
qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
return;
}
if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) {
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010,
"qla_target(%d): ABTS: Unknown Exchange "
"Address received\n", vha->vp_idx);
qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
return;
}
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011,
"qla_target(%d): task abort (s_id=%x:%x:%x, "
"tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id[2],
abts->fcp_hdr_le.s_id[1], abts->fcp_hdr_le.s_id[0], tag,
le32_to_cpu(abts->fcp_hdr_le.parameter));
s_id[0] = abts->fcp_hdr_le.s_id[2];
s_id[1] = abts->fcp_hdr_le.s_id[1];
s_id[2] = abts->fcp_hdr_le.s_id[0];
spin_lock_irqsave(&ha->tgt.sess_lock, flags);
sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
if (!sess) {
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012,
"qla_target(%d): task abort for non-existant session\n",
vha->vp_idx);
rc = qlt_sched_sess_work(vha->vha_tgt.qla_tgt,
QLA_TGT_SESS_WORK_ABORT, abts, sizeof(*abts));
spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
if (rc != 0) {
qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED,
false);
}
return;
}
spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
if (sess->deleted) {
qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
return;
}
rc = __qlt_24xx_handle_abts(vha, abts, sess);
if (rc != 0) {
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054,
"qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n",
vha->vp_idx, rc);
qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
return;
}
}
/*
* ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
*/
static void qlt_24xx_send_task_mgmt_ctio(struct scsi_qla_host *ha,
struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code)
{
struct atio_from_isp *atio = &mcmd->orig_iocb.atio;
struct ctio7_to_24xx *ctio;
uint16_t temp;
ql_dbg(ql_dbg_tgt, ha, 0xe008,
"Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n",
ha, atio, resp_code);
/* Send marker if required */
if (qlt_issue_marker(ha, 1) != QLA_SUCCESS)
return;
ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(ha, NULL);
if (ctio == NULL) {
ql_dbg(ql_dbg_tgt, ha, 0xe04c,
"qla_target(%d): %s failed: unable to allocate "
"request packet\n", ha->vp_idx, __func__);
return;
}
ctio->entry_type = CTIO_TYPE7;
ctio->entry_count = 1;
ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
ctio->nport_handle = mcmd->sess->loop_id;
ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
ctio->vp_index = ha->vp_idx;
ctio->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
ctio->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
ctio->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
ctio->exchange_addr = atio->u.isp24.exchange_addr;
ctio->u.status1.flags = (atio->u.isp24.attr << 9) |
cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS);
temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
ctio->u.status1.ox_id = cpu_to_le16(temp);
ctio->u.status1.scsi_status =
cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID);
ctio->u.status1.response_len = cpu_to_le16(8);
ctio->u.status1.sense_data[0] = resp_code;
/* Memory Barrier */
wmb();
qla2x00_start_iocbs(ha, ha->req);
}
void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
{
mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
}
EXPORT_SYMBOL(qlt_free_mcmd);
/*
* ha->hardware_lock supposed to be held on entry. Might drop it, then
* reacquire
*/
void qlt_send_resp_ctio(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd,
uint8_t scsi_status, uint8_t sense_key, uint8_t asc, uint8_t ascq)
{
struct atio_from_isp *atio = &cmd->atio;
struct ctio7_to_24xx *ctio;
uint16_t temp;
ql_dbg(ql_dbg_tgt_dif, vha, 0x3066,
"Sending response CTIO7 (vha=%p, atio=%p, scsi_status=%02x, "
"sense_key=%02x, asc=%02x, ascq=%02x",
vha, atio, scsi_status, sense_key, asc, ascq);
ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(vha, NULL);
if (!ctio) {
ql_dbg(ql_dbg_async, vha, 0x3067,
"qla2x00t(%ld): %s failed: unable to allocate request packet",
vha->host_no, __func__);
goto out;
}
ctio->entry_type = CTIO_TYPE7;
ctio->entry_count = 1;
ctio->handle = QLA_TGT_SKIP_HANDLE;
ctio->nport_handle = cmd->sess->loop_id;
ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
ctio->vp_index = vha->vp_idx;
ctio->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
ctio->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
ctio->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
ctio->exchange_addr = atio->u.isp24.exchange_addr;
ctio->u.status1.flags = (atio->u.isp24.attr << 9) |
cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS);
temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
ctio->u.status1.ox_id = cpu_to_le16(temp);
ctio->u.status1.scsi_status =
cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID | scsi_status);
ctio->u.status1.response_len = cpu_to_le16(18);
ctio->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio));
if (ctio->u.status1.residual != 0)
ctio->u.status1.scsi_status |=
cpu_to_le16(SS_RESIDUAL_UNDER);
/* Response code and sense key */
put_unaligned_le32(((0x70 << 24) | (sense_key << 8)),
(&ctio->u.status1.sense_data)[0]);
/* Additional sense length */
put_unaligned_le32(0x0a, (&ctio->u.status1.sense_data)[1]);
/* ASC and ASCQ */
put_unaligned_le32(((asc << 24) | (ascq << 16)),
(&ctio->u.status1.sense_data)[3]);
/* Memory Barrier */
wmb();
qla2x00_start_iocbs(vha, vha->req);
out:
return;
}
/* callback from target fabric module code */
void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd)
{
struct scsi_qla_host *vha = mcmd->sess->vha;
struct qla_hw_data *ha = vha->hw;
unsigned long flags;
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013,
"TM response mcmd (%p) status %#x state %#x",
mcmd, mcmd->fc_tm_rsp, mcmd->flags);
spin_lock_irqsave(&ha->hardware_lock, flags);
if (!vha->flags.online || mcmd->reset_count != ha->chip_reset) {
/*
* Either the port is not online or this request was from
* previous life, just abort the processing.
*/
ql_dbg(ql_dbg_async, vha, 0xe100,
"RESET-TMR online/active/old-count/new-count = %d/%d/%d/%d.\n",
vha->flags.online, qla2x00_reset_active(vha),
mcmd->reset_count, ha->chip_reset);
ha->tgt.tgt_ops->free_mcmd(mcmd);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
return;
}
if (mcmd->flags == QLA24XX_MGMT_SEND_NACK) {
if (mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode ==
ELS_LOGO ||
mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode ==
ELS_PRLO ||
mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode ==
ELS_TPRLO) {
ql_dbg(ql_dbg_disc, vha, 0xffff,
"TM response logo %phC status %#x state %#x",
mcmd->sess->port_name, mcmd->fc_tm_rsp,
mcmd->flags);
qlt_schedule_sess_for_deletion_lock(mcmd->sess);
} else {
qlt_send_notify_ack(vha, &mcmd->orig_iocb.imm_ntfy,
0, 0, 0, 0, 0, 0);
}
} else {
if (mcmd->orig_iocb.atio.u.raw.entry_type == ABTS_RECV_24XX)
qlt_24xx_send_abts_resp(vha, &mcmd->orig_iocb.abts,
mcmd->fc_tm_rsp, false);
else
qlt_24xx_send_task_mgmt_ctio(vha, mcmd,
mcmd->fc_tm_rsp);
}
/*
* Make the callback for ->free_mcmd() to queue_work() and invoke
* target_put_sess_cmd() to drop cmd_kref to 1. The final
* target_put_sess_cmd() call will be made from TFO->check_stop_free()
* -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd
* descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() ->
* qlt_xmit_tm_rsp() returns here..
*/
ha->tgt.tgt_ops->free_mcmd(mcmd);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
}
EXPORT_SYMBOL(qlt_xmit_tm_rsp);
/* No locks */
static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm)
{
struct qla_tgt_cmd *cmd = prm->cmd;
BUG_ON(cmd->sg_cnt == 0);
prm->sg = (struct scatterlist *)cmd->sg;
prm->seg_cnt = pci_map_sg(prm->tgt->ha->pdev, cmd->sg,
cmd->sg_cnt, cmd->dma_data_direction);
if (unlikely(prm->seg_cnt == 0))
goto out_err;
prm->cmd->sg_mapped = 1;
if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) {
/*
* If greater than four sg entries then we need to allocate
* the continuation entries
*/
if (prm->seg_cnt > prm->tgt->datasegs_per_cmd)
prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt -
prm->tgt->datasegs_per_cmd,
prm->tgt->datasegs_per_cont);
} else {
/* DIF */
if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) ||
(cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) {
prm->seg_cnt = DIV_ROUND_UP(cmd->bufflen, cmd->blk_sz);
prm->tot_dsds = prm->seg_cnt;
} else
prm->tot_dsds = prm->seg_cnt;
if (cmd->prot_sg_cnt) {
prm->prot_sg = cmd->prot_sg;
prm->prot_seg_cnt = pci_map_sg(prm->tgt->ha->pdev,
cmd->prot_sg, cmd->prot_sg_cnt,
cmd->dma_data_direction);
if (unlikely(prm->prot_seg_cnt == 0))
goto out_err;
if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) ||
(cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) {
/* Dif Bundling not support here */
prm->prot_seg_cnt = DIV_ROUND_UP(cmd->bufflen,
cmd->blk_sz);
prm->tot_dsds += prm->prot_seg_cnt;
} else
prm->tot_dsds += prm->prot_seg_cnt;
}
}
return 0;
out_err:
ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe04d,
"qla_target(%d): PCI mapping failed: sg_cnt=%d",
0, prm->cmd->sg_cnt);
return -1;
}
static void qlt_unmap_sg(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd)
{
struct qla_hw_data *ha = vha->hw;
if (!cmd->sg_mapped)
return;
pci_unmap_sg(ha->pdev, cmd->sg, cmd->sg_cnt, cmd->dma_data_direction);
cmd->sg_mapped = 0;
if (cmd->prot_sg_cnt)
pci_unmap_sg(ha->pdev, cmd->prot_sg, cmd->prot_sg_cnt,
cmd->dma_data_direction);
if (!cmd->ctx)
return;
if (cmd->ctx_dsd_alloced)
qla2x00_clean_dsd_pool(ha, cmd->ctx);
dma_pool_free(ha->dl_dma_pool, cmd->ctx, cmd->ctx->crc_ctx_dma);
}
static int qlt_check_reserve_free_req(struct scsi_qla_host *vha,
uint32_t req_cnt)
{
uint32_t cnt, cnt_in;
if (vha->req->cnt < (req_cnt + 2)) {
cnt = (uint16_t)RD_REG_DWORD(vha->req->req_q_out);
cnt_in = (uint16_t)RD_REG_DWORD(vha->req->req_q_in);
if (vha->req->ring_index < cnt)
vha->req->cnt = cnt - vha->req->ring_index;
else
vha->req->cnt = vha->req->length -
(vha->req->ring_index - cnt);
if (unlikely(vha->req->cnt < (req_cnt + 2))) {
ql_dbg(ql_dbg_io, vha, 0x305a,
"qla_target(%d): There is no room in the request ring: vha->req->ring_index=%d, vha->req->cnt=%d, req_cnt=%d Req-out=%d Req-in=%d Req-Length=%d\n",
vha->vp_idx, vha->req->ring_index,
vha->req->cnt, req_cnt, cnt, cnt_in,
vha->req->length);
return -EAGAIN;
}
}
vha->req->cnt -= req_cnt;
return 0;
}
/*
* ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
*/
static inline void *qlt_get_req_pkt(struct scsi_qla_host *vha)
{
/* Adjust ring index. */
vha->req->ring_index++;
if (vha->req->ring_index == vha->req->length) {
vha->req->ring_index = 0;
vha->req->ring_ptr = vha->req->ring;
} else {
vha->req->ring_ptr++;
}
return (cont_entry_t *)vha->req->ring_ptr;
}
/* ha->hardware_lock supposed to be held on entry */
static inline uint32_t qlt_make_handle(struct scsi_qla_host *vha)
{
struct qla_hw_data *ha = vha->hw;
uint32_t h;
h = ha->tgt.current_handle;
/* always increment cmd handle */
do {
++h;
if (h > DEFAULT_OUTSTANDING_COMMANDS)
h = 1; /* 0 is QLA_TGT_NULL_HANDLE */
if (h == ha->tgt.current_handle) {
ql_dbg(ql_dbg_io, vha, 0x305b,
"qla_target(%d): Ran out of "
"empty cmd slots in ha %p\n", vha->vp_idx, ha);
h = QLA_TGT_NULL_HANDLE;
break;
}
} while ((h == QLA_TGT_NULL_HANDLE) ||
(h == QLA_TGT_SKIP_HANDLE) ||
(ha->tgt.cmds[h-1] != NULL));
if (h != QLA_TGT_NULL_HANDLE)
ha->tgt.current_handle = h;
return h;
}
/* ha->hardware_lock supposed to be held on entry */
static int qlt_24xx_build_ctio_pkt(struct qla_tgt_prm *prm,
struct scsi_qla_host *vha)
{
uint32_t h;
struct ctio7_to_24xx *pkt;
struct qla_hw_data *ha = vha->hw;
struct atio_from_isp *atio = &prm->cmd->atio;
uint16_t temp;
pkt = (struct ctio7_to_24xx *)vha->req->ring_ptr;
prm->pkt = pkt;
memset(pkt, 0, sizeof(*pkt));
pkt->entry_type = CTIO_TYPE7;
pkt->entry_count = (uint8_t)prm->req_cnt;
pkt->vp_index = vha->vp_idx;
h = qlt_make_handle(vha);
if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
/*
* CTIO type 7 from the firmware doesn't provide a way to
* know the initiator's LOOP ID, hence we can't find
* the session and, so, the command.
*/
return -EAGAIN;
} else
ha->tgt.cmds[h - 1] = prm->cmd;
pkt->handle = h | CTIO_COMPLETION_HANDLE_MARK;
pkt->nport_handle = prm->cmd->loop_id;
pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
pkt->exchange_addr = atio->u.isp24.exchange_addr;
pkt->u.status0.flags |= (atio->u.isp24.attr << 9);
temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
pkt->u.status0.ox_id = cpu_to_le16(temp);
pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset);
return 0;
}
/*
* ha->hardware_lock supposed to be held on entry. We have already made sure
* that there is sufficient amount of request entries to not drop it.
*/
static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm,
struct scsi_qla_host *vha)
{
int cnt;
uint32_t *dword_ptr;
int enable_64bit_addressing = prm->tgt->tgt_enable_64bit_addr;
/* Build continuation packets */
while (prm->seg_cnt > 0) {
cont_a64_entry_t *cont_pkt64 =
(cont_a64_entry_t *)qlt_get_req_pkt(vha);
/*
* Make sure that from cont_pkt64 none of
* 64-bit specific fields used for 32-bit
* addressing. Cast to (cont_entry_t *) for
* that.
*/
memset(cont_pkt64, 0, sizeof(*cont_pkt64));
cont_pkt64->entry_count = 1;
cont_pkt64->sys_define = 0;
if (enable_64bit_addressing) {
cont_pkt64->entry_type = CONTINUE_A64_TYPE;
dword_ptr =
(uint32_t *)&cont_pkt64->dseg_0_address;
} else {
cont_pkt64->entry_type = CONTINUE_TYPE;
dword_ptr =
(uint32_t *)&((cont_entry_t *)
cont_pkt64)->dseg_0_address;
}
/* Load continuation entry data segments */
for (cnt = 0;
cnt < prm->tgt->datasegs_per_cont && prm->seg_cnt;
cnt++, prm->seg_cnt--) {
*dword_ptr++ =
cpu_to_le32(pci_dma_lo32
(sg_dma_address(prm->sg)));
if (enable_64bit_addressing) {
*dword_ptr++ =
cpu_to_le32(pci_dma_hi32
(sg_dma_address
(prm->sg)));
}
*dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg));
prm->sg = sg_next(prm->sg);
}
}
}
/*
* ha->hardware_lock supposed to be held on entry. We have already made sure
* that there is sufficient amount of request entries to not drop it.
*/
static void qlt_load_data_segments(struct qla_tgt_prm *prm,
struct scsi_qla_host *vha)
{
int cnt;
uint32_t *dword_ptr;
int enable_64bit_addressing = prm->tgt->tgt_enable_64bit_addr;
struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt;
pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen);
/* Setup packet address segment pointer */
dword_ptr = pkt24->u.status0.dseg_0_address;
/* Set total data segment count */
if (prm->seg_cnt)
pkt24->dseg_count = cpu_to_le16(prm->seg_cnt);
if (prm->seg_cnt == 0) {
/* No data transfer */
*dword_ptr++ = 0;
*dword_ptr = 0;
return;
}
/* If scatter gather */
/* Load command entry data segments */
for (cnt = 0;
(cnt < prm->tgt->datasegs_per_cmd) && prm->seg_cnt;
cnt++, prm->seg_cnt--) {
*dword_ptr++ =
cpu_to_le32(pci_dma_lo32(sg_dma_address(prm->sg)));
if (enable_64bit_addressing) {
*dword_ptr++ =
cpu_to_le32(pci_dma_hi32(
sg_dma_address(prm->sg)));
}
*dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg));
prm->sg = sg_next(prm->sg);
}
qlt_load_cont_data_segments(prm, vha);
}
static inline int qlt_has_data(struct qla_tgt_cmd *cmd)
{
return cmd->bufflen > 0;
}
static void qlt_print_dif_err(struct qla_tgt_prm *prm)
{
struct qla_tgt_cmd *cmd;
struct scsi_qla_host *vha;
/* asc 0x10=dif error */
if (prm->sense_buffer && (prm->sense_buffer[12] == 0x10)) {
cmd = prm->cmd;
vha = cmd->vha;
/* ASCQ */
switch (prm->sense_buffer[13]) {
case 1:
ql_dbg(ql_dbg_tgt_dif, vha, 0xffff,
"BE detected Guard TAG ERR: lba[0x%llx|%lld] len[0x%x] "
"se_cmd=%p tag[%x]",
cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
cmd->atio.u.isp24.exchange_addr);
break;
case 2:
ql_dbg(ql_dbg_tgt_dif, vha, 0xffff,
"BE detected APP TAG ERR: lba[0x%llx|%lld] len[0x%x] "
"se_cmd=%p tag[%x]",
cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
cmd->atio.u.isp24.exchange_addr);
break;
case 3:
ql_dbg(ql_dbg_tgt_dif, vha, 0xffff,
"BE detected REF TAG ERR: lba[0x%llx|%lld] len[0x%x] "
"se_cmd=%p tag[%x]",
cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
cmd->atio.u.isp24.exchange_addr);
break;
default:
ql_dbg(ql_dbg_tgt_dif, vha, 0xffff,
"BE detected Dif ERR: lba[%llx|%lld] len[%x] "
"se_cmd=%p tag[%x]",
cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
cmd->atio.u.isp24.exchange_addr);
break;
}
ql_dump_buffer(ql_dbg_tgt_dif, vha, 0xffff, cmd->cdb, 16);
}
}
/*
* Called without ha->hardware_lock held
*/
static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd,
struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status,
uint32_t *full_req_cnt)
{
struct qla_tgt *tgt = cmd->tgt;
struct scsi_qla_host *vha = tgt->vha;
struct qla_hw_data *ha = vha->hw;
struct se_cmd *se_cmd = &cmd->se_cmd;
prm->cmd = cmd;
prm->tgt = tgt;
prm->rq_result = scsi_status;
prm->sense_buffer = &cmd->sense_buffer[0];
prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER;
prm->sg = NULL;
prm->seg_cnt = -1;
prm->req_cnt = 1;
prm->add_status_pkt = 0;
/* Send marker if required */
if (qlt_issue_marker(vha, 0) != QLA_SUCCESS)
return -EFAULT;
if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) {
if (qlt_pci_map_calc_cnt(prm) != 0)
return -EAGAIN;
}
*full_req_cnt = prm->req_cnt;
if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) {
prm->residual = se_cmd->residual_count;
ql_dbg(ql_dbg_io + ql_dbg_verbose, vha, 0x305c,
"Residual underflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n",
prm->residual, se_cmd->tag,
se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0,
cmd->bufflen, prm->rq_result);
prm->rq_result |= SS_RESIDUAL_UNDER;
} else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
prm->residual = se_cmd->residual_count;
ql_dbg(ql_dbg_io, vha, 0x305d,
"Residual overflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n",
prm->residual, se_cmd->tag, se_cmd->t_task_cdb ?
se_cmd->t_task_cdb[0] : 0, cmd->bufflen, prm->rq_result);
prm->rq_result |= SS_RESIDUAL_OVER;
}
if (xmit_type & QLA_TGT_XMIT_STATUS) {
/*
* If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be
* ignored in *xmit_response() below
*/
if (qlt_has_data(cmd)) {
if (QLA_TGT_SENSE_VALID(prm->sense_buffer) ||
(IS_FWI2_CAPABLE(ha) &&
(prm->rq_result != 0))) {
prm->add_status_pkt = 1;
(*full_req_cnt)++;
}
}
}
return 0;
}
static inline int qlt_need_explicit_conf(struct qla_hw_data *ha,
struct qla_tgt_cmd *cmd, int sending_sense)
{
if (ha->tgt.enable_class_2)
return 0;
if (sending_sense)
return cmd->conf_compl_supported;
else
return ha->tgt.enable_explicit_conf &&
cmd->conf_compl_supported;
}
static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio,
struct qla_tgt_prm *prm)
{
prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len,
(uint32_t)sizeof(ctio->u.status1.sense_data));
ctio->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_SEND_STATUS);
if (qlt_need_explicit_conf(prm->tgt->ha, prm->cmd, 0)) {
ctio->u.status0.flags |= cpu_to_le16(
CTIO7_FLAGS_EXPLICIT_CONFORM |
CTIO7_FLAGS_CONFORM_REQ);
}
ctio->u.status0.residual = cpu_to_le32(prm->residual);
ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result);
if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) {
int i;
if (qlt_need_explicit_conf(prm->tgt->ha, prm->cmd, 1)) {
if ((prm->rq_result & SS_SCSI_STATUS_BYTE) != 0) {
ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe017,
"Skipping EXPLICIT_CONFORM and "
"CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ "
"non GOOD status\n");
goto skip_explict_conf;
}
ctio->u.status1.flags |= cpu_to_le16(
CTIO7_FLAGS_EXPLICIT_CONFORM |
CTIO7_FLAGS_CONFORM_REQ);
}
skip_explict_conf:
ctio->u.status1.flags &=
~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
ctio->u.status1.flags |=
cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
ctio->u.status1.scsi_status |=
cpu_to_le16(SS_SENSE_LEN_VALID);
ctio->u.status1.sense_length =
cpu_to_le16(prm->sense_buffer_len);
for (i = 0; i < prm->sense_buffer_len/4; i++)
((uint32_t *)ctio->u.status1.sense_data)[i] =
cpu_to_be32(((uint32_t *)prm->sense_buffer)[i]);
qlt_print_dif_err(prm);
} else {
ctio->u.status1.flags &=
~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
ctio->u.status1.flags |=
cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
ctio->u.status1.sense_length = 0;
memset(ctio->u.status1.sense_data, 0,
sizeof(ctio->u.status1.sense_data));
}
/* Sense with len > 24, is it possible ??? */
}
static inline int
qlt_hba_err_chk_enabled(struct se_cmd *se_cmd)
{
switch (se_cmd->prot_op) {
case TARGET_PROT_DOUT_INSERT:
case TARGET_PROT_DIN_STRIP:
if (ql2xenablehba_err_chk >= 1)
return 1;
break;
case TARGET_PROT_DOUT_PASS:
case TARGET_PROT_DIN_PASS:
if (ql2xenablehba_err_chk >= 2)
return 1;
break;
case TARGET_PROT_DIN_INSERT:
case TARGET_PROT_DOUT_STRIP:
return 1;
default:
break;
}
return 0;
}
static inline int
qla_tgt_ref_mask_check(struct se_cmd *se_cmd)
{
switch (se_cmd->prot_op) {
case TARGET_PROT_DIN_INSERT:
case TARGET_PROT_DOUT_INSERT:
case TARGET_PROT_DIN_STRIP:
case TARGET_PROT_DOUT_STRIP:
case TARGET_PROT_DIN_PASS:
case TARGET_PROT_DOUT_PASS:
return 1;
default:
return 0;
}
return 0;
}
/*
* qla_tgt_set_dif_tags - Extract Ref and App tags from SCSI command
*/
static void
qla_tgt_set_dif_tags(struct qla_tgt_cmd *cmd, struct crc_context *ctx,
uint16_t *pfw_prot_opts)
{
struct se_cmd *se_cmd = &cmd->se_cmd;
uint32_t lba = 0xffffffff & se_cmd->t_task_lba;
scsi_qla_host_t *vha = cmd->tgt->vha;
struct qla_hw_data *ha = vha->hw;
uint32_t t32 = 0;
/*
* wait till Mode Sense/Select cmd, modepage Ah, subpage 2
* have been immplemented by TCM, before AppTag is avail.
* Look for modesense_handlers[]
*/
ctx->app_tag = 0;
ctx->app_tag_mask[0] = 0x0;
ctx->app_tag_mask[1] = 0x0;
if (IS_PI_UNINIT_CAPABLE(ha)) {
if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) ||
(se_cmd->prot_type == TARGET_DIF_TYPE2_PROT))
*pfw_prot_opts |= PO_DIS_VALD_APP_ESC;
else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT)
*pfw_prot_opts |= PO_DIS_VALD_APP_REF_ESC;
}
t32 = ha->tgt.tgt_ops->get_dif_tags(cmd, pfw_prot_opts);
switch (se_cmd->prot_type) {
case TARGET_DIF_TYPE0_PROT:
/*
* No check for ql2xenablehba_err_chk, as it
* would be an I/O error if hba tag generation
* is not done.
*/
ctx->ref_tag = cpu_to_le32(lba);
/* enable ALL bytes of the ref tag */
ctx->ref_tag_mask[0] = 0xff;
ctx->ref_tag_mask[1] = 0xff;
ctx->ref_tag_mask[2] = 0xff;
ctx->ref_tag_mask[3] = 0xff;
break;
case TARGET_DIF_TYPE1_PROT:
/*
* For TYPE 1 protection: 16 bit GUARD tag, 32 bit
* REF tag, and 16 bit app tag.
*/
ctx->ref_tag = cpu_to_le32(lba);
if (!qla_tgt_ref_mask_check(se_cmd) ||
!(ha->tgt.tgt_ops->chk_dif_tags(t32))) {
*pfw_prot_opts |= PO_DIS_REF_TAG_VALD;
break;
}
/* enable ALL bytes of the ref tag */
ctx->ref_tag_mask[0] = 0xff;
ctx->ref_tag_mask[1] = 0xff;
ctx->ref_tag_mask[2] = 0xff;
ctx->ref_tag_mask[3] = 0xff;
break;
case TARGET_DIF_TYPE2_PROT:
/*
* For TYPE 2 protection: 16 bit GUARD + 32 bit REF
* tag has to match LBA in CDB + N
*/
ctx->ref_tag = cpu_to_le32(lba);
if (!qla_tgt_ref_mask_check(se_cmd) ||
!(ha->tgt.tgt_ops->chk_dif_tags(t32))) {
*pfw_prot_opts |= PO_DIS_REF_TAG_VALD;
break;
}
/* enable ALL bytes of the ref tag */
ctx->ref_tag_mask[0] = 0xff;
ctx->ref_tag_mask[1] = 0xff;
ctx->ref_tag_mask[2] = 0xff;
ctx->ref_tag_mask[3] = 0xff;
break;
case TARGET_DIF_TYPE3_PROT:
/* For TYPE 3 protection: 16 bit GUARD only */
*pfw_prot_opts |= PO_DIS_REF_TAG_VALD;
ctx->ref_tag_mask[0] = ctx->ref_tag_mask[1] =
ctx->ref_tag_mask[2] = ctx->ref_tag_mask[3] = 0x00;
break;
}
}
static inline int
qlt_build_ctio_crc2_pkt(struct qla_tgt_prm *prm, scsi_qla_host_t *vha)
{
uint32_t *cur_dsd;
uint32_t transfer_length = 0;
uint32_t data_bytes;
uint32_t dif_bytes;
uint8_t bundling = 1;
uint8_t *clr_ptr;
struct crc_context *crc_ctx_pkt = NULL;
struct qla_hw_data *ha;
struct ctio_crc2_to_fw *pkt;
dma_addr_t crc_ctx_dma;
uint16_t fw_prot_opts = 0;
struct qla_tgt_cmd *cmd = prm->cmd;
struct se_cmd *se_cmd = &cmd->se_cmd;
uint32_t h;
struct atio_from_isp *atio = &prm->cmd->atio;
struct qla_tc_param tc;
uint16_t t16;
ha = vha->hw;
pkt = (struct ctio_crc2_to_fw *)vha->req->ring_ptr;
prm->pkt = pkt;
memset(pkt, 0, sizeof(*pkt));
ql_dbg(ql_dbg_tgt, vha, 0xe071,
"qla_target(%d):%s: se_cmd[%p] CRC2 prot_op[0x%x] cmd prot sg:cnt[%p:%x] lba[%llu]\n",
vha->vp_idx, __func__, se_cmd, se_cmd->prot_op,
prm->prot_sg, prm->prot_seg_cnt, se_cmd->t_task_lba);
if ((se_cmd->prot_op == TARGET_PROT_DIN_INSERT) ||
(se_cmd->prot_op == TARGET_PROT_DOUT_STRIP))
bundling = 0;
/* Compute dif len and adjust data len to incude protection */
data_bytes = cmd->bufflen;
dif_bytes = (data_bytes / cmd->blk_sz) * 8;
switch (se_cmd->prot_op) {
case TARGET_PROT_DIN_INSERT:
case TARGET_PROT_DOUT_STRIP:
transfer_length = data_bytes;
if (cmd->prot_sg_cnt)
data_bytes += dif_bytes;
break;
case TARGET_PROT_DIN_STRIP:
case TARGET_PROT_DOUT_INSERT:
case TARGET_PROT_DIN_PASS:
case TARGET_PROT_DOUT_PASS:
transfer_length = data_bytes + dif_bytes;
break;
default:
BUG();
break;
}
if (!qlt_hba_err_chk_enabled(se_cmd))
fw_prot_opts |= 0x10; /* Disable Guard tag checking */
/* HBA error checking enabled */
else if (IS_PI_UNINIT_CAPABLE(ha)) {
if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) ||
(se_cmd->prot_type == TARGET_DIF_TYPE2_PROT))
fw_prot_opts |= PO_DIS_VALD_APP_ESC;
else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT)
fw_prot_opts |= PO_DIS_VALD_APP_REF_ESC;
}
switch (se_cmd->prot_op) {
case TARGET_PROT_DIN_INSERT:
case TARGET_PROT_DOUT_INSERT:
fw_prot_opts |= PO_MODE_DIF_INSERT;
break;
case TARGET_PROT_DIN_STRIP:
case TARGET_PROT_DOUT_STRIP:
fw_prot_opts |= PO_MODE_DIF_REMOVE;
break;
case TARGET_PROT_DIN_PASS:
case TARGET_PROT_DOUT_PASS:
fw_prot_opts |= PO_MODE_DIF_PASS;
/* FUTURE: does tcm require T10CRC<->IPCKSUM conversion? */
break;
default:/* Normal Request */
fw_prot_opts |= PO_MODE_DIF_PASS;
break;
}
/* ---- PKT ---- */
/* Update entry type to indicate Command Type CRC_2 IOCB */
pkt->entry_type = CTIO_CRC2;
pkt->entry_count = 1;
pkt->vp_index = vha->vp_idx;
h = qlt_make_handle(vha);
if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
/*
* CTIO type 7 from the firmware doesn't provide a way to
* know the initiator's LOOP ID, hence we can't find
* the session and, so, the command.
*/
return -EAGAIN;
} else
ha->tgt.cmds[h-1] = prm->cmd;
pkt->handle = h | CTIO_COMPLETION_HANDLE_MARK;
pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id);
pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
pkt->exchange_addr = atio->u.isp24.exchange_addr;
/* silence compile warning */
t16 = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
pkt->ox_id = cpu_to_le16(t16);
t16 = (atio->u.isp24.attr << 9);
pkt->flags |= cpu_to_le16(t16);
pkt->relative_offset = cpu_to_le32(prm->cmd->offset);
/* Set transfer direction */
if (cmd->dma_data_direction == DMA_TO_DEVICE)
pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_IN);
else if (cmd->dma_data_direction == DMA_FROM_DEVICE)
pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_OUT);
pkt->dseg_count = prm->tot_dsds;
/* Fibre channel byte count */
pkt->transfer_length = cpu_to_le32(transfer_length);
/* ----- CRC context -------- */
/* Allocate CRC context from global pool */
crc_ctx_pkt = cmd->ctx =
dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma);
if (!crc_ctx_pkt)
goto crc_queuing_error;
/* Zero out CTX area. */
clr_ptr = (uint8_t *)crc_ctx_pkt;
memset(clr_ptr, 0, sizeof(*crc_ctx_pkt));
crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma;
INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list);
/* Set handle */
crc_ctx_pkt->handle = pkt->handle;
qla_tgt_set_dif_tags(cmd, crc_ctx_pkt, &fw_prot_opts);
pkt->crc_context_address[0] = cpu_to_le32(LSD(crc_ctx_dma));
pkt->crc_context_address[1] = cpu_to_le32(MSD(crc_ctx_dma));
pkt->crc_context_len = CRC_CONTEXT_LEN_FW;
if (!bundling) {
cur_dsd = (uint32_t *) &crc_ctx_pkt->u.nobundling.data_address;
} else {
/*
* Configure Bundling if we need to fetch interlaving
* protection PCI accesses
*/
fw_prot_opts |= PO_ENABLE_DIF_BUNDLING;
crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes);
crc_ctx_pkt->u.bundling.dseg_count =
cpu_to_le16(prm->tot_dsds - prm->prot_seg_cnt);
cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.data_address;
}
/* Finish the common fields of CRC pkt */
crc_ctx_pkt->blk_size = cpu_to_le16(cmd->blk_sz);
crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts);
crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes);
crc_ctx_pkt->guard_seed = cpu_to_le16(0);
memset((uint8_t *)&tc, 0 , sizeof(tc));
tc.vha = vha;
tc.blk_sz = cmd->blk_sz;
tc.bufflen = cmd->bufflen;
tc.sg = cmd->sg;
tc.prot_sg = cmd->prot_sg;
tc.ctx = crc_ctx_pkt;
tc.ctx_dsd_alloced = &cmd->ctx_dsd_alloced;
/* Walks data segments */
pkt->flags |= cpu_to_le16(CTIO7_FLAGS_DSD_PTR);
if (!bundling && prm->prot_seg_cnt) {
if (qla24xx_walk_and_build_sglist_no_difb(ha, NULL, cur_dsd,
prm->tot_dsds, &tc))
goto crc_queuing_error;
} else if (qla24xx_walk_and_build_sglist(ha, NULL, cur_dsd,
(prm->tot_dsds - prm->prot_seg_cnt), &tc))
goto crc_queuing_error;
if (bundling && prm->prot_seg_cnt) {
/* Walks dif segments */
pkt->add_flags |= CTIO_CRC2_AF_DIF_DSD_ENA;
cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.dif_address;
if (qla24xx_walk_and_build_prot_sglist(ha, NULL, cur_dsd,
prm->prot_seg_cnt, &tc))
goto crc_queuing_error;
}
return QLA_SUCCESS;
crc_queuing_error:
/* Cleanup will be performed by the caller */
vha->hw->tgt.cmds[h - 1] = NULL;
return QLA_FUNCTION_FAILED;
}
/*
* Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and *
* QLA_TGT_XMIT_STATUS for >= 24xx silicon
*/
int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type,
uint8_t scsi_status)
{
struct scsi_qla_host *vha = cmd->vha;
struct qla_hw_data *ha = vha->hw;
struct ctio7_to_24xx *pkt;
struct qla_tgt_prm prm;
uint32_t full_req_cnt = 0;
unsigned long flags = 0;
int res;
spin_lock_irqsave(&ha->hardware_lock, flags);
if (cmd->sess && cmd->sess->deleted) {
cmd->state = QLA_TGT_STATE_PROCESSED;
if (cmd->sess->logout_completed)
/* no need to terminate. FW already freed exchange. */
qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
else
qlt_send_term_exchange(vha, cmd, &cmd->atio, 1, 0);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
return 0;
}
spin_unlock_irqrestore(&ha->hardware_lock, flags);
memset(&prm, 0, sizeof(prm));
ql_dbg(ql_dbg_tgt, cmd->vha, 0xe018,
"is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d se_cmd[%p]\n",
(xmit_type & QLA_TGT_XMIT_STATUS) ?
1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction,
&cmd->se_cmd);
res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status,
&full_req_cnt);
if (unlikely(res != 0)) {
return res;
}
spin_lock_irqsave(&ha->hardware_lock, flags);
if (xmit_type == QLA_TGT_XMIT_STATUS)
vha->tgt_counters.core_qla_snd_status++;
else
vha->tgt_counters.core_qla_que_buf++;
if (!ha->flags.fw_started || cmd->reset_count != ha->chip_reset) {
/*
* Either the port is not online or this request was from
* previous life, just abort the processing.
*/
cmd->state = QLA_TGT_STATE_PROCESSED;
qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
ql_dbg(ql_dbg_async, vha, 0xe101,
"RESET-RSP online/active/old-count/new-count = %d/%d/%d/%d.\n",
vha->flags.online, qla2x00_reset_active(vha),
cmd->reset_count, ha->chip_reset);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
return 0;
}
/* Does F/W have an IOCBs for this request */
res = qlt_check_reserve_free_req(vha, full_req_cnt);
if (unlikely(res))
goto out_unmap_unlock;
if (cmd->se_cmd.prot_op && (xmit_type & QLA_TGT_XMIT_DATA))
res = qlt_build_ctio_crc2_pkt(&prm, vha);
else
res = qlt_24xx_build_ctio_pkt(&prm, vha);
if (unlikely(res != 0)) {
vha->req->cnt += full_req_cnt;
goto out_unmap_unlock;
}
pkt = (struct ctio7_to_24xx *)prm.pkt;
if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) {
pkt->u.status0.flags |=
cpu_to_le16(CTIO7_FLAGS_DATA_IN |
CTIO7_FLAGS_STATUS_MODE_0);
if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL)
qlt_load_data_segments(&prm, vha);
if (prm.add_status_pkt == 0) {
if (xmit_type & QLA_TGT_XMIT_STATUS) {
pkt->u.status0.scsi_status =
cpu_to_le16(prm.rq_result);
pkt->u.status0.residual =
cpu_to_le32(prm.residual);
pkt->u.status0.flags |= cpu_to_le16(
CTIO7_FLAGS_SEND_STATUS);
if (qlt_need_explicit_conf(ha, cmd, 0)) {
pkt->u.status0.flags |=
cpu_to_le16(
CTIO7_FLAGS_EXPLICIT_CONFORM |
CTIO7_FLAGS_CONFORM_REQ);
}
}
} else {
/*
* We have already made sure that there is sufficient
* amount of request entries to not drop HW lock in
* req_pkt().
*/
struct ctio7_to_24xx *ctio =
(struct ctio7_to_24xx *)qlt_get_req_pkt(vha);
ql_dbg(ql_dbg_io, vha, 0x305e,
"Building additional status packet 0x%p.\n",
ctio);
/*
* T10Dif: ctio_crc2_to_fw overlay ontop of
* ctio7_to_24xx
*/
memcpy(ctio, pkt, sizeof(*ctio));
/* reset back to CTIO7 */
ctio->entry_count = 1;
ctio->entry_type = CTIO_TYPE7;
ctio->dseg_count = 0;
ctio->u.status1.flags &= ~cpu_to_le16(
CTIO7_FLAGS_DATA_IN);
/* Real finish is ctio_m1's finish */
pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK;
pkt->u.status0.flags |= cpu_to_le16(
CTIO7_FLAGS_DONT_RET_CTIO);
/* qlt_24xx_init_ctio_to_isp will correct
* all neccessary fields that's part of CTIO7.
* There should be no residual of CTIO-CRC2 data.
*/
qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio,
&prm);
pr_debug("Status CTIO7: %p\n", ctio);
}
} else
qlt_24xx_init_ctio_to_isp(pkt, &prm);
cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */
cmd->cmd_sent_to_fw = 1;
/* Memory Barrier */
wmb();
qla2x00_start_iocbs(vha, vha->req);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
return 0;
out_unmap_unlock:
qlt_unmap_sg(vha, cmd);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
return res;
}
EXPORT_SYMBOL(qlt_xmit_response);
int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd)
{
struct ctio7_to_24xx *pkt;
struct scsi_qla_host *vha = cmd->vha;
struct qla_hw_data *ha = vha->hw;
struct qla_tgt *tgt = cmd->tgt;
struct qla_tgt_prm prm;
unsigned long flags;
int res = 0;
memset(&prm, 0, sizeof(prm));
prm.cmd = cmd;
prm.tgt = tgt;
prm.sg = NULL;
prm.req_cnt = 1;
/* Send marker if required */
if (qlt_issue_marker(vha, 0) != QLA_SUCCESS)
return -EIO;
/* Calculate number of entries and segments required */
if (qlt_pci_map_calc_cnt(&prm) != 0)
return -EAGAIN;
spin_lock_irqsave(&ha->hardware_lock, flags);
if (!ha->flags.fw_started || (cmd->reset_count != ha->chip_reset) ||
(cmd->sess && cmd->sess->deleted)) {
/*
* Either the port is not online or this request was from
* previous life, just abort the processing.
*/
cmd->state = QLA_TGT_STATE_NEED_DATA;
qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
ql_dbg(ql_dbg_async, vha, 0xe102,
"RESET-XFR online/active/old-count/new-count = %d/%d/%d/%d.\n",
vha->flags.online, qla2x00_reset_active(vha),
cmd->reset_count, ha->chip_reset);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
return 0;
}
/* Does F/W have an IOCBs for this request */
res = qlt_check_reserve_free_req(vha, prm.req_cnt);
if (res != 0)
goto out_unlock_free_unmap;
if (cmd->se_cmd.prot_op)
res = qlt_build_ctio_crc2_pkt(&prm, vha);
else
res = qlt_24xx_build_ctio_pkt(&prm, vha);
if (unlikely(res != 0)) {
vha->req->cnt += prm.req_cnt;
goto out_unlock_free_unmap;
}
pkt = (struct ctio7_to_24xx *)prm.pkt;
pkt->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_DATA_OUT |
CTIO7_FLAGS_STATUS_MODE_0);
if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL)
qlt_load_data_segments(&prm, vha);
cmd->state = QLA_TGT_STATE_NEED_DATA;
cmd->cmd_sent_to_fw = 1;
/* Memory Barrier */
wmb();
qla2x00_start_iocbs(vha, vha->req);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
return res;
out_unlock_free_unmap:
qlt_unmap_sg(vha, cmd);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
return res;
}
EXPORT_SYMBOL(qlt_rdy_to_xfer);
/*
* it is assumed either hardware_lock or qpair lock is held.
*/
static void
qlt_handle_dif_error(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd,
struct ctio_crc_from_fw *sts)
{
uint8_t *ap = &sts->actual_dif[0];
uint8_t *ep = &sts->expected_dif[0];
uint64_t lba = cmd->se_cmd.t_task_lba;
uint8_t scsi_status, sense_key, asc, ascq;
unsigned long flags;
cmd->trc_flags |= TRC_DIF_ERR;
cmd->a_guard = be16_to_cpu(*(uint16_t *)(ap + 0));
cmd->a_app_tag = be16_to_cpu(*(uint16_t *)(ap + 2));
cmd->a_ref_tag = be32_to_cpu(*(uint32_t *)(ap + 4));
cmd->e_guard = be16_to_cpu(*(uint16_t *)(ep + 0));
cmd->e_app_tag = be16_to_cpu(*(uint16_t *)(ep + 2));
cmd->e_ref_tag = be32_to_cpu(*(uint32_t *)(ep + 4));
ql_dbg(ql_dbg_tgt_dif, vha, 0xf075,
"%s: aborted %d state %d\n", __func__, cmd->aborted, cmd->state);
scsi_status = sense_key = asc = ascq = 0;
/* check appl tag */
if (cmd->e_app_tag != cmd->a_app_tag) {
ql_dbg(ql_dbg_tgt_dif, vha, 0xffff,
"App Tag ERR: cdb[%x] lba[%llx %llx] blks[%x] [Actual|Expected] "
"Ref[%x|%x], App[%x|%x], "
"Guard [%x|%x] cmd=%p ox_id[%04x]",
cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks,
cmd->a_ref_tag, cmd->e_ref_tag,
cmd->a_app_tag, cmd->e_app_tag,
cmd->a_guard, cmd->e_guard,
cmd, cmd->atio.u.isp24.fcp_hdr.ox_id);
cmd->dif_err_code = DIF_ERR_APP;
scsi_status = SAM_STAT_CHECK_CONDITION;
sense_key = ABORTED_COMMAND;
asc = 0x10;
ascq = 0x2;
}
/* check ref tag */
if (cmd->e_ref_tag != cmd->a_ref_tag) {
ql_dbg(ql_dbg_tgt_dif, vha, 0xffff,
"Ref Tag ERR: cdb[%x] lba[%llx %llx] blks[%x] [Actual|Expected] "
"Ref[%x|%x], App[%x|%x], "
"Guard[%x|%x] cmd=%p ox_id[%04x] ",
cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks,
cmd->a_ref_tag, cmd->e_ref_tag,
cmd->a_app_tag, cmd->e_app_tag,
cmd->a_guard, cmd->e_guard,
cmd, cmd->atio.u.isp24.fcp_hdr.ox_id);
cmd->dif_err_code = DIF_ERR_REF;
scsi_status = SAM_STAT_CHECK_CONDITION;
sense_key = ABORTED_COMMAND;
asc = 0x10;
ascq = 0x3;
goto out;
}
/* check guard */
if (cmd->e_guard != cmd->a_guard) {
ql_dbg(ql_dbg_tgt_dif, vha, 0xffff,
"Guard ERR: cdb[%x] lba[%llx %llx] blks[%x] [Actual|Expected] "
"Ref[%x|%x], App[%x|%x], "
"Guard [%x|%x] cmd=%p ox_id[%04x]",
cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks,
cmd->a_ref_tag, cmd->e_ref_tag,
cmd->a_app_tag, cmd->e_app_tag,
cmd->a_guard, cmd->e_guard,
cmd, cmd->atio.u.isp24.fcp_hdr.ox_id);
cmd->dif_err_code = DIF_ERR_GRD;
scsi_status = SAM_STAT_CHECK_CONDITION;
sense_key = ABORTED_COMMAND;
asc = 0x10;
ascq = 0x1;
}
out:
switch (cmd->state) {
case QLA_TGT_STATE_NEED_DATA:
/* handle_data will load DIF error code */
cmd->state = QLA_TGT_STATE_DATA_IN;
vha->hw->tgt.tgt_ops->handle_data(cmd);
break;
default:
spin_lock_irqsave(&cmd->cmd_lock, flags);
if (cmd->aborted) {
spin_unlock_irqrestore(&cmd->cmd_lock, flags);
vha->hw->tgt.tgt_ops->free_cmd(cmd);
break;
}
spin_unlock_irqrestore(&cmd->cmd_lock, flags);
qlt_send_resp_ctio(vha, cmd, scsi_status, sense_key, asc, ascq);
/* assume scsi status gets out on the wire.
* Will not wait for completion.
*/
vha->hw->tgt.tgt_ops->free_cmd(cmd);
break;
}
}
/* If hardware_lock held on entry, might drop it, then reaquire */
/* This function sends the appropriate CTIO to ISP 2xxx or 24xx */
static int __qlt_send_term_imm_notif(struct scsi_qla_host *vha,
struct imm_ntfy_from_isp *ntfy)
{
struct nack_to_isp *nack;
struct qla_hw_data *ha = vha->hw;
request_t *pkt;
int ret = 0;
ql_dbg(ql_dbg_tgt_tmr, vha, 0xe01c,
"Sending TERM ELS CTIO (ha=%p)\n", ha);
pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
if (pkt == NULL) {
ql_dbg(ql_dbg_tgt, vha, 0xe080,
"qla_target(%d): %s failed: unable to allocate "
"request packet\n", vha->vp_idx, __func__);
return -ENOMEM;
}
pkt->entry_type = NOTIFY_ACK_TYPE;
pkt->entry_count = 1;
pkt->handle = QLA_TGT_SKIP_HANDLE;
nack = (struct nack_to_isp *)pkt;
nack->ox_id = ntfy->ox_id;
nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle;
if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) {
nack->u.isp24.flags = ntfy->u.isp24.flags &
__constant_cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB);
}
/* terminate */
nack->u.isp24.flags |=
__constant_cpu_to_le16(NOTIFY_ACK_FLAGS_TERMINATE);
nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
nack->u.isp24.status = ntfy->u.isp24.status;
nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle;
nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
nack->u.isp24.vp_index = ntfy->u.isp24.vp_index;
qla2x00_start_iocbs(vha, vha->req);
return ret;
}
static void qlt_send_term_imm_notif(struct scsi_qla_host *vha,
struct imm_ntfy_from_isp *imm, int ha_locked)
{
unsigned long flags = 0;
int rc;
if (qlt_issue_marker(vha, ha_locked) < 0)
return;
if (ha_locked) {
rc = __qlt_send_term_imm_notif(vha, imm);
#if 0 /* Todo */
if (rc == -ENOMEM)
qlt_alloc_qfull_cmd(vha, imm, 0, 0);
#else
if (rc) {
}
#endif
goto done;
}
spin_lock_irqsave(&vha->hw->hardware_lock, flags);
rc = __qlt_send_term_imm_notif(vha, imm);
#if 0 /* Todo */
if (rc == -ENOMEM)
qlt_alloc_qfull_cmd(vha, imm, 0, 0);
#endif
done:
if (!ha_locked)
spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
}
/* If hardware_lock held on entry, might drop it, then reaquire */
/* This function sends the appropriate CTIO to ISP 2xxx or 24xx */
static int __qlt_send_term_exchange(struct scsi_qla_host *vha,
struct qla_tgt_cmd *cmd,
struct atio_from_isp *atio)
{
struct ctio7_to_24xx *ctio24;
struct qla_hw_data *ha = vha->hw;
request_t *pkt;
int ret = 0;
uint16_t temp;
ql_dbg(ql_dbg_tgt, vha, 0xe01c, "Sending TERM EXCH CTIO (ha=%p)\n", ha);
pkt = (request_t *)qla2x00_alloc_iocbs_ready(vha, NULL);
if (pkt == NULL) {
ql_dbg(ql_dbg_tgt, vha, 0xe050,
"qla_target(%d): %s failed: unable to allocate "
"request packet\n", vha->vp_idx, __func__);
return -ENOMEM;
}
if (cmd != NULL) {
if (cmd->state < QLA_TGT_STATE_PROCESSED) {
ql_dbg(ql_dbg_tgt, vha, 0xe051,
"qla_target(%d): Terminating cmd %p with "
"incorrect state %d\n", vha->vp_idx, cmd,
cmd->state);
} else
ret = 1;
}
vha->tgt_counters.num_term_xchg_sent++;
pkt->entry_count = 1;
pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
ctio24 = (struct ctio7_to_24xx *)pkt;
ctio24->entry_type = CTIO_TYPE7;
ctio24->nport_handle = CTIO7_NHANDLE_UNRECOGNIZED;
ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
ctio24->vp_index = vha->vp_idx;
ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
ctio24->exchange_addr = atio->u.isp24.exchange_addr;
ctio24->u.status1.flags = (atio->u.isp24.attr << 9) |
cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 |
CTIO7_FLAGS_TERMINATE);
temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
ctio24->u.status1.ox_id = cpu_to_le16(temp);
/* Most likely, it isn't needed */
ctio24->u.status1.residual = get_unaligned((uint32_t *)
&atio->u.isp24.fcp_cmnd.add_cdb[
atio->u.isp24.fcp_cmnd.add_cdb_len]);
if (ctio24->u.status1.residual != 0)
ctio24->u.status1.scsi_status |= SS_RESIDUAL_UNDER;
/* Memory Barrier */
wmb();
qla2x00_start_iocbs(vha, vha->req);
return ret;
}
static void qlt_send_term_exchange(struct scsi_qla_host *vha,
struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked,
int ul_abort)
{
unsigned long flags = 0;
int rc;
if (qlt_issue_marker(vha, ha_locked) < 0)
return;
if (ha_locked) {
rc = __qlt_send_term_exchange(vha, cmd, atio);
if (rc == -ENOMEM)
qlt_alloc_qfull_cmd(vha, atio, 0, 0);
goto done;
}
spin_lock_irqsave(&vha->hw->hardware_lock, flags);
rc = __qlt_send_term_exchange(vha, cmd, atio);
if (rc == -ENOMEM)
qlt_alloc_qfull_cmd(vha, atio, 0, 0);
done:
if (cmd && !ul_abort && !cmd->aborted) {
if (cmd->sg_mapped)
qlt_unmap_sg(vha, cmd);
vha->hw->tgt.tgt_ops->free_cmd(cmd);
}
if (!ha_locked)
spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
return;
}
static void qlt_init_term_exchange(struct scsi_qla_host *vha)
{
struct list_head free_list;
struct qla_tgt_cmd *cmd, *tcmd;
vha->hw->tgt.leak_exchg_thresh_hold =
(vha->hw->cur_fw_xcb_count/100) * LEAK_EXCHG_THRESH_HOLD_PERCENT;
cmd = tcmd = NULL;
if (!list_empty(&vha->hw->tgt.q_full_list)) {
INIT_LIST_HEAD(&free_list);
list_splice_init(&vha->hw->tgt.q_full_list, &free_list);
list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) {
list_del(&cmd->cmd_list);
/* This cmd was never sent to TCM. There is no need
* to schedule free or call free_cmd
*/
qlt_free_cmd(cmd);
vha->hw->tgt.num_qfull_cmds_alloc--;
}
}
vha->hw->tgt.num_qfull_cmds_dropped = 0;
}
static void qlt_chk_exch_leak_thresh_hold(struct scsi_qla_host *vha)
{
uint32_t total_leaked;
total_leaked = vha->hw->tgt.num_qfull_cmds_dropped;
if (vha->hw->tgt.leak_exchg_thresh_hold &&
(total_leaked > vha->hw->tgt.leak_exchg_thresh_hold)) {
ql_dbg(ql_dbg_tgt, vha, 0xe079,
"Chip reset due to exchange starvation: %d/%d.\n",
total_leaked, vha->hw->cur_fw_xcb_count);
if (IS_P3P_TYPE(vha->hw))
set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
else
set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
qla2xxx_wake_dpc(vha);
}
}
int qlt_abort_cmd(struct qla_tgt_cmd *cmd)
{
struct qla_tgt *tgt = cmd->tgt;
struct scsi_qla_host *vha = tgt->vha;
struct se_cmd *se_cmd = &cmd->se_cmd;
unsigned long flags;
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014,
"qla_target(%d): terminating exchange for aborted cmd=%p "
"(se_cmd=%p, tag=%llu)", vha->vp_idx, cmd, &cmd->se_cmd,
se_cmd->tag);
spin_lock_irqsave(&cmd->cmd_lock, flags);
if (cmd->aborted) {
spin_unlock_irqrestore(&cmd->cmd_lock, flags);
/*
* It's normal to see 2 calls in this path:
* 1) XFER Rdy completion + CMD_T_ABORT
* 2) TCM TMR - drain_state_list
*/
ql_dbg(ql_dbg_tgt_mgt, vha, 0xffff,
"multiple abort. %p transport_state %x, t_state %x,"
" se_cmd_flags %x \n", cmd, cmd->se_cmd.transport_state,
cmd->se_cmd.t_state,cmd->se_cmd.se_cmd_flags);
return EIO;
}
cmd->aborted = 1;
cmd->trc_flags |= TRC_ABORT;
spin_unlock_irqrestore(&cmd->cmd_lock, flags);
qlt_send_term_exchange(vha, cmd, &cmd->atio, 0, 1);
return 0;
}
EXPORT_SYMBOL(qlt_abort_cmd);
void qlt_free_cmd(struct qla_tgt_cmd *cmd)
{
struct fc_port *sess = cmd->sess;
ql_dbg(ql_dbg_tgt, cmd->vha, 0xe074,
"%s: se_cmd[%p] ox_id %04x\n",
__func__, &cmd->se_cmd,
be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
BUG_ON(cmd->cmd_in_wq);
if (cmd->sg_mapped)
qlt_unmap_sg(cmd->vha, cmd);
if (!cmd->q_full)
qlt_decr_num_pend_cmds(cmd->vha);
BUG_ON(cmd->sg_mapped);
cmd->jiffies_at_free = get_jiffies_64();
if (unlikely(cmd->free_sg))
kfree(cmd->sg);
if (!sess || !sess->se_sess) {
WARN_ON(1);
return;
}
cmd->jiffies_at_free = get_jiffies_64();
percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag);
}
EXPORT_SYMBOL(qlt_free_cmd);
/*
* ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
*/
static int qlt_term_ctio_exchange(struct scsi_qla_host *vha, void *ctio,
struct qla_tgt_cmd *cmd, uint32_t status)
{
int term = 0;
if (cmd->se_cmd.prot_op)
ql_dbg(ql_dbg_tgt_dif, vha, 0xffff,
"Term DIF cmd: lba[0x%llx|%lld] len[0x%x] "
"se_cmd=%p tag[%x] op %#x/%s",
cmd->lba, cmd->lba,
cmd->num_blks, &cmd->se_cmd,
cmd->atio.u.isp24.exchange_addr,
cmd->se_cmd.prot_op,
prot_op_str(cmd->se_cmd.prot_op));
if (ctio != NULL) {
struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio;
term = !(c->flags &
cpu_to_le16(OF_TERM_EXCH));
} else
term = 1;
if (term)
qlt_send_term_exchange(vha, cmd, &cmd->atio, 1, 0);
return term;
}
/* ha->hardware_lock supposed to be held on entry */
static inline struct qla_tgt_cmd *qlt_get_cmd(struct scsi_qla_host *vha,
uint32_t handle)
{
struct qla_hw_data *ha = vha->hw;
handle--;
if (ha->tgt.cmds[handle] != NULL) {
struct qla_tgt_cmd *cmd = ha->tgt.cmds[handle];
ha->tgt.cmds[handle] = NULL;
return cmd;
} else
return NULL;
}
/* ha->hardware_lock supposed to be held on entry */
static struct qla_tgt_cmd *qlt_ctio_to_cmd(struct scsi_qla_host *vha,
uint32_t handle, void *ctio)
{
struct qla_tgt_cmd *cmd = NULL;
/* Clear out internal marks */
handle &= ~(CTIO_COMPLETION_HANDLE_MARK |
CTIO_INTERMEDIATE_HANDLE_MARK);
if (handle != QLA_TGT_NULL_HANDLE) {
if (unlikely(handle == QLA_TGT_SKIP_HANDLE))
return NULL;
/* handle-1 is actually used */
if (unlikely(handle > DEFAULT_OUTSTANDING_COMMANDS)) {
ql_dbg(ql_dbg_tgt, vha, 0xe052,
"qla_target(%d): Wrong handle %x received\n",
vha->vp_idx, handle);
return NULL;
}
cmd = qlt_get_cmd(vha, handle);
if (unlikely(cmd == NULL)) {
ql_dbg(ql_dbg_tgt, vha, 0xe053,
"qla_target(%d): Suspicious: unable to "
"find the command with handle %x\n", vha->vp_idx,
handle);
return NULL;
}
} else if (ctio != NULL) {
/* We can't get loop ID from CTIO7 */
ql_dbg(ql_dbg_tgt, vha, 0xe054,
"qla_target(%d): Wrong CTIO received: QLA24xx doesn't "
"support NULL handles\n", vha->vp_idx);
return NULL;
}
return cmd;
}
/* hardware_lock should be held by caller. */
static void
qlt_abort_cmd_on_host_reset(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd)
{
struct qla_hw_data *ha = vha->hw;
uint32_t handle;
if (cmd->sg_mapped)
qlt_unmap_sg(vha, cmd);
handle = qlt_make_handle(vha);
/* TODO: fix debug message type and ids. */
if (cmd->state == QLA_TGT_STATE_PROCESSED) {
ql_dbg(ql_dbg_io, vha, 0xff00,
"HOST-ABORT: handle=%d, state=PROCESSED.\n", handle);
} else if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
cmd->write_data_transferred = 0;
cmd->state = QLA_TGT_STATE_DATA_IN;
ql_dbg(ql_dbg_io, vha, 0xff01,
"HOST-ABORT: handle=%d, state=DATA_IN.\n", handle);
ha->tgt.tgt_ops->handle_data(cmd);
return;
} else {
ql_dbg(ql_dbg_io, vha, 0xff03,
"HOST-ABORT: handle=%d, state=BAD(%d).\n", handle,
cmd->state);
dump_stack();
}
cmd->trc_flags |= TRC_FLUSH;
ha->tgt.tgt_ops->free_cmd(cmd);
}
void
qlt_host_reset_handler(struct qla_hw_data *ha)
{
struct qla_tgt_cmd *cmd;
unsigned long flags;
scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
scsi_qla_host_t *vha = NULL;
struct qla_tgt *tgt = base_vha->vha_tgt.qla_tgt;
uint32_t i;
if (!base_vha->hw->tgt.tgt_ops)
return;
if (!tgt || qla_ini_mode_enabled(base_vha)) {
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf003,
"Target mode disabled\n");
return;
}
ql_dbg(ql_dbg_tgt_mgt, vha, 0xff10,
"HOST-ABORT-HNDLR: base_vha->dpc_flags=%lx.\n",
base_vha->dpc_flags);
spin_lock_irqsave(&ha->hardware_lock, flags);
for (i = 1; i < DEFAULT_OUTSTANDING_COMMANDS + 1; i++) {
cmd = qlt_get_cmd(base_vha, i);
if (!cmd)
continue;
/* ha->tgt.cmds entry is cleared by qlt_get_cmd. */
vha = cmd->vha;
qlt_abort_cmd_on_host_reset(vha, cmd);
}
spin_unlock_irqrestore(&ha->hardware_lock, flags);
}
/*
* ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
*/
static void qlt_do_ctio_completion(struct scsi_qla_host *vha, uint32_t handle,
uint32_t status, void *ctio)
{
struct qla_hw_data *ha = vha->hw;
struct se_cmd *se_cmd;
struct qla_tgt_cmd *cmd;
if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) {
/* That could happen only in case of an error/reset/abort */
if (status != CTIO_SUCCESS) {
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d,
"Intermediate CTIO received"
" (status %x)\n", status);
}
return;
}
cmd = qlt_ctio_to_cmd(vha, handle, ctio);
if (cmd == NULL)
return;
se_cmd = &cmd->se_cmd;
cmd->cmd_sent_to_fw = 0;
qlt_unmap_sg(vha, cmd);
if (unlikely(status != CTIO_SUCCESS)) {
switch (status & 0xFFFF) {
case CTIO_LIP_RESET:
case CTIO_TARGET_RESET:
case CTIO_ABORTED:
/* driver request abort via Terminate exchange */
case CTIO_TIMEOUT:
case CTIO_INVALID_RX_ID:
/* They are OK */
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058,
"qla_target(%d): CTIO with "
"status %#x received, state %x, se_cmd %p, "
"(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, "
"TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx,
status, cmd->state, se_cmd);
break;
case CTIO_PORT_LOGGED_OUT:
case CTIO_PORT_UNAVAILABLE:
{
int logged_out =
(status & 0xFFFF) == CTIO_PORT_LOGGED_OUT;
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059,
"qla_target(%d): CTIO with %s status %x "
"received (state %x, se_cmd %p)\n", vha->vp_idx,
logged_out ? "PORT LOGGED OUT" : "PORT UNAVAILABLE",
status, cmd->state, se_cmd);
if (logged_out && cmd->sess) {
/*
* Session is already logged out, but we need
* to notify initiator, who's not aware of this
*/
cmd->sess->logout_on_delete = 0;
cmd->sess->send_els_logo = 1;
ql_dbg(ql_dbg_disc, vha, 0xffff,
"%s %d %8phC post del sess\n",
__func__, __LINE__, cmd->sess->port_name);
qlt_schedule_sess_for_deletion_lock(cmd->sess);
}
break;
}
case CTIO_DIF_ERROR: {
struct ctio_crc_from_fw *crc =
(struct ctio_crc_from_fw *)ctio;
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf073,
"qla_target(%d): CTIO with DIF_ERROR status %x "
"received (state %x, ulp_cmd %p) actual_dif[0x%llx] "
"expect_dif[0x%llx]\n",
vha->vp_idx, status, cmd->state, se_cmd,
*((u64 *)&crc->actual_dif[0]),
*((u64 *)&crc->expected_dif[0]));
qlt_handle_dif_error(vha, cmd, ctio);
return;
}
default:
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b,
"qla_target(%d): CTIO with error status 0x%x received (state %x, se_cmd %p\n",
vha->vp_idx, status, cmd->state, se_cmd);
break;
}
/* "cmd->aborted" means
* cmd is already aborted/terminated, we don't
* need to terminate again. The exchange is already
* cleaned up/freed at FW level. Just cleanup at driver
* level.
*/
if ((cmd->state != QLA_TGT_STATE_NEED_DATA) &&
(!cmd->aborted)) {
cmd->trc_flags |= TRC_CTIO_ERR;
if (qlt_term_ctio_exchange(vha, ctio, cmd, status))
return;
}
}
if (cmd->state == QLA_TGT_STATE_PROCESSED) {
cmd->trc_flags |= TRC_CTIO_DONE;
} else if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
cmd->state = QLA_TGT_STATE_DATA_IN;
if (status == CTIO_SUCCESS)
cmd->write_data_transferred = 1;
ha->tgt.tgt_ops->handle_data(cmd);
return;
} else if (cmd->aborted) {
cmd->trc_flags |= TRC_CTIO_ABORTED;
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e,
"Aborted command %p (tag %lld) finished\n", cmd, se_cmd->tag);
} else {
cmd->trc_flags |= TRC_CTIO_STRANGE;
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c,
"qla_target(%d): A command in state (%d) should "
"not return a CTIO complete\n", vha->vp_idx, cmd->state);
}
if (unlikely(status != CTIO_SUCCESS) &&
!cmd->aborted) {
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n");
dump_stack();
}
ha->tgt.tgt_ops->free_cmd(cmd);
}
static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha,
uint8_t task_codes)
{
int fcp_task_attr;
switch (task_codes) {
case ATIO_SIMPLE_QUEUE:
fcp_task_attr = TCM_SIMPLE_TAG;
break;
case ATIO_HEAD_OF_QUEUE:
fcp_task_attr = TCM_HEAD_TAG;
break;
case ATIO_ORDERED_QUEUE:
fcp_task_attr = TCM_ORDERED_TAG;
break;
case ATIO_ACA_QUEUE:
fcp_task_attr = TCM_ACA_TAG;
break;
case ATIO_UNTAGGED:
fcp_task_attr = TCM_SIMPLE_TAG;
break;
default:
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d,
"qla_target: unknown task code %x, use ORDERED instead\n",
task_codes);
fcp_task_attr = TCM_ORDERED_TAG;
break;
}
return fcp_task_attr;
}
static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *,
uint8_t *);
/*
* Process context for I/O path into tcm_qla2xxx code
*/
static void __qlt_do_work(struct qla_tgt_cmd *cmd)
{
scsi_qla_host_t *vha = cmd->vha;
struct qla_hw_data *ha = vha->hw;
struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
struct fc_port *sess = cmd->sess;
struct atio_from_isp *atio = &cmd->atio;
unsigned char *cdb;
unsigned long flags;
uint32_t data_length;
int ret, fcp_task_attr, data_dir, bidi = 0;
cmd->cmd_in_wq = 0;
cmd->trc_flags |= TRC_DO_WORK;
if (tgt->tgt_stop)
goto out_term;
if (cmd->aborted) {
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf082,
"cmd with tag %u is aborted\n",
cmd->atio.u.isp24.exchange_addr);
goto out_term;
}
spin_lock_init(&cmd->cmd_lock);
cdb = &atio->u.isp24.fcp_cmnd.cdb[0];
cmd->se_cmd.tag = atio->u.isp24.exchange_addr;
cmd->unpacked_lun = scsilun_to_int(
(struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun);
if (atio->u.isp24.fcp_cmnd.rddata &&
atio->u.isp24.fcp_cmnd.wrdata) {
bidi = 1;
data_dir = DMA_TO_DEVICE;
} else if (atio->u.isp24.fcp_cmnd.rddata)
data_dir = DMA_FROM_DEVICE;
else if (atio->u.isp24.fcp_cmnd.wrdata)
data_dir = DMA_TO_DEVICE;
else
data_dir = DMA_NONE;
fcp_task_attr = qlt_get_fcp_task_attr(vha,
atio->u.isp24.fcp_cmnd.task_attr);
data_length = be32_to_cpu(get_unaligned((uint32_t *)
&atio->u.isp24.fcp_cmnd.add_cdb[
atio->u.isp24.fcp_cmnd.add_cdb_len]));
ret = ha->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length,
fcp_task_attr, data_dir, bidi);
if (ret != 0)
goto out_term;
/*
* Drop extra session reference from qla_tgt_handle_cmd_for_atio*(
*/
spin_lock_irqsave(&ha->tgt.sess_lock, flags);
ha->tgt.tgt_ops->put_sess(sess);
spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
return;
out_term:
ql_dbg(ql_dbg_io, vha, 0x3060, "Terminating work cmd %p", cmd);
/*
* cmd has not sent to target yet, so pass NULL as the second
* argument to qlt_send_term_exchange() and free the memory here.
*/
cmd->trc_flags |= TRC_DO_WORK_ERR;
spin_lock_irqsave(&ha->hardware_lock, flags);
qlt_send_term_exchange(vha, NULL, &cmd->atio, 1, 0);
qlt_decr_num_pend_cmds(vha);
percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
spin_lock_irqsave(&ha->tgt.sess_lock, flags);
ha->tgt.tgt_ops->put_sess(sess);
spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
}
static void qlt_do_work(struct work_struct *work)
{
struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
scsi_qla_host_t *vha = cmd->vha;
unsigned long flags;
spin_lock_irqsave(&vha->cmd_list_lock, flags);
list_del(&cmd->cmd_list);
spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
__qlt_do_work(cmd);
}
static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha,
struct fc_port *sess,
struct atio_from_isp *atio)
{
struct se_session *se_sess = sess->se_sess;
struct qla_tgt_cmd *cmd;
int tag;
tag = percpu_ida_alloc(&se_sess->sess_tag_pool, TASK_RUNNING);
if (tag < 0)
return NULL;
cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag];
memset(cmd, 0, sizeof(struct qla_tgt_cmd));
memcpy(&cmd->atio, atio, sizeof(*atio));
cmd->state = QLA_TGT_STATE_NEW;
cmd->tgt = vha->vha_tgt.qla_tgt;
qlt_incr_num_pend_cmds(vha);
cmd->vha = vha;
cmd->se_cmd.map_tag = tag;
cmd->sess = sess;
cmd->loop_id = sess->loop_id;
cmd->conf_compl_supported = sess->conf_compl_supported;
cmd->trc_flags = 0;
cmd->jiffies_at_alloc = get_jiffies_64();
cmd->reset_count = vha->hw->chip_reset;
return cmd;
}
static void qlt_send_busy(struct scsi_qla_host *, struct atio_from_isp *,
uint16_t);
static void qlt_create_sess_from_atio(struct work_struct *work)
{
struct qla_tgt_sess_op *op = container_of(work,
struct qla_tgt_sess_op, work);
scsi_qla_host_t *vha = op->vha;
struct qla_hw_data *ha = vha->hw;
struct fc_port *sess;
struct qla_tgt_cmd *cmd;
unsigned long flags;
uint8_t *s_id = op->atio.u.isp24.fcp_hdr.s_id;
spin_lock_irqsave(&vha->cmd_list_lock, flags);
list_del(&op->cmd_list);
spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
if (op->aborted) {
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf083,
"sess_op with tag %u is aborted\n",
op->atio.u.isp24.exchange_addr);
goto out_term;
}
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf022,
"qla_target(%d): Unable to find wwn login"
" (s_id %x:%x:%x), trying to create it manually\n",
vha->vp_idx, s_id[0], s_id[1], s_id[2]);
if (op->atio.u.raw.entry_count > 1) {
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf023,
"Dropping multy entry atio %p\n", &op->atio);
goto out_term;
}
sess = qlt_make_local_sess(vha, s_id);
/* sess has an extra creation ref. */
if (!sess)
goto out_term;
/*
* Now obtain a pre-allocated session tag using the original op->atio
* packet header, and dispatch into __qlt_do_work() using the existing
* process context.
*/
cmd = qlt_get_tag(vha, sess, &op->atio);
if (!cmd) {
spin_lock_irqsave(&ha->hardware_lock, flags);
qlt_send_busy(vha, &op->atio, SAM_STAT_BUSY);
ha->tgt.tgt_ops->put_sess(sess);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
kfree(op);
return;
}
/*
* __qlt_do_work() will call qlt_put_sess() to release
* the extra reference taken above by qlt_make_local_sess()
*/
__qlt_do_work(cmd);
kfree(op);
return;
out_term:
spin_lock_irqsave(&ha->hardware_lock, flags);
qlt_send_term_exchange(vha, NULL, &op->atio, 1, 0);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
kfree(op);
}
/* ha->hardware_lock supposed to be held on entry */
static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha,
struct atio_from_isp *atio)
{
struct qla_hw_data *ha = vha->hw;
struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
struct fc_port *sess;
struct qla_tgt_cmd *cmd;
unsigned long flags;
if (unlikely(tgt->tgt_stop)) {
ql_dbg(ql_dbg_io, vha, 0x3061,
"New command while device %p is shutting down\n", tgt);
return -EFAULT;
}
sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, atio->u.isp24.fcp_hdr.s_id);
if (unlikely(!sess)) {
struct qla_tgt_sess_op *op = kzalloc(sizeof(struct qla_tgt_sess_op),
GFP_ATOMIC);
if (!op)
return -ENOMEM;
memcpy(&op->atio, atio, sizeof(*atio));
op->vha = vha;
spin_lock(&vha->cmd_list_lock);
list_add_tail(&op->cmd_list, &vha->qla_sess_op_cmd_list);
spin_unlock(&vha->cmd_list_lock);
INIT_WORK(&op->work, qlt_create_sess_from_atio);
queue_work(qla_tgt_wq, &op->work);
return 0;
}
/* Another WWN used to have our s_id. Our PLOGI scheduled its
* session deletion, but it's still in sess_del_work wq */
if (sess->deleted) {
ql_dbg(ql_dbg_io, vha, 0x3061,
"New command while old session %p is being deleted\n",
sess);
return -EFAULT;
}
/*
* Do kref_get() before returning + dropping qla_hw_data->hardware_lock.
*/
if (!kref_get_unless_zero(&sess->sess_kref)) {
ql_dbg(ql_dbg_tgt, vha, 0xffff,
"%s: kref_get fail, %8phC oxid %x \n",
__func__, sess->port_name,
be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id));
return -EFAULT;
}
cmd = qlt_get_tag(vha, sess, atio);
if (!cmd) {
ql_dbg(ql_dbg_io, vha, 0x3062,
"qla_target(%d): Allocation of cmd failed\n", vha->vp_idx);
spin_lock_irqsave(&ha->tgt.sess_lock, flags);
ha->tgt.tgt_ops->put_sess(sess);
spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
return -ENOMEM;
}
cmd->cmd_in_wq = 1;
cmd->trc_flags |= TRC_NEW_CMD;
cmd->se_cmd.cpuid = ha->msix_count ?
ha->tgt.rspq_vector_cpuid : WORK_CPU_UNBOUND;
spin_lock_irqsave(&vha->cmd_list_lock, flags);
list_add_tail(&cmd->cmd_list, &vha->qla_cmd_list);
spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
INIT_WORK(&cmd->work, qlt_do_work);
if (ha->msix_count) {
if (cmd->atio.u.isp24.fcp_cmnd.rddata)
queue_work_on(smp_processor_id(), qla_tgt_wq,
&cmd->work);
else
queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq,
&cmd->work);
} else {
queue_work(qla_tgt_wq, &cmd->work);
}
return 0;
}
/* ha->hardware_lock supposed to be held on entry */
static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun,
int fn, void *iocb, int flags)
{
struct scsi_qla_host *vha = sess->vha;
struct qla_hw_data *ha = vha->hw;
struct qla_tgt_mgmt_cmd *mcmd;
struct atio_from_isp *a = (struct atio_from_isp *)iocb;
int res;
mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
if (!mcmd) {
ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009,
"qla_target(%d): Allocation of management "
"command failed, some commands and their data could "
"leak\n", vha->vp_idx);
return -ENOMEM;
}
memset(mcmd, 0, sizeof(*mcmd));
mcmd->sess = sess;
if (iocb) {
memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
sizeof(mcmd->orig_iocb.imm_ntfy));
}
mcmd->tmr_func = fn;
mcmd->flags = flags;
mcmd->reset_count = vha->hw->chip_reset;
switch (fn) {
case QLA_TGT_LUN_RESET:
abort_cmds_for_lun(vha, lun, a->u.isp24.fcp_hdr.s_id);
break;
}
res = ha->tgt.tgt_ops->handle_tmr(mcmd, lun, mcmd->tmr_func, 0);
if (res != 0) {
ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000b,
"qla_target(%d): tgt.tgt_ops->handle_tmr() failed: %d\n",
sess->vha->vp_idx, res);
mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
return -EFAULT;
}
return 0;
}
/* ha->hardware_lock supposed to be held on entry */
static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb)
{
struct atio_from_isp *a = (struct atio_from_isp *)iocb;
struct qla_hw_data *ha = vha->hw;
struct qla_tgt *tgt;
struct fc_port *sess;
uint32_t lun, unpacked_lun;
int fn;
unsigned long flags;
tgt = vha->vha_tgt.qla_tgt;
lun = a->u.isp24.fcp_cmnd.lun;
fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
spin_lock_irqsave(&ha->tgt.sess_lock, flags);
sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
a->u.isp24.fcp_hdr.s_id);
spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
if (!sess) {
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf024,
"qla_target(%d): task mgmt fn 0x%x for "
"non-existant session\n", vha->vp_idx, fn);
return qlt_sched_sess_work(tgt, QLA_TGT_SESS_WORK_TM, iocb,
sizeof(struct atio_from_isp));
}
if (sess->deleted)
return -EFAULT;
return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
}
/* ha->hardware_lock supposed to be held on entry */
static int __qlt_abort_task(struct scsi_qla_host *vha,
struct imm_ntfy_from_isp *iocb, struct fc_port *sess)
{
struct atio_from_isp *a = (struct atio_from_isp *)iocb;
struct qla_hw_data *ha = vha->hw;
struct qla_tgt_mgmt_cmd *mcmd;
uint32_t lun, unpacked_lun;
int rc;
mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
if (mcmd == NULL) {
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f,
"qla_target(%d): %s: Allocation of ABORT cmd failed\n",
vha->vp_idx, __func__);
return -ENOMEM;
}
memset(mcmd, 0, sizeof(*mcmd));
mcmd->sess = sess;
memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
sizeof(mcmd->orig_iocb.imm_ntfy));
lun = a->u.isp24.fcp_cmnd.lun;
unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
mcmd->reset_count = vha->hw->chip_reset;
mcmd->tmr_func = QLA_TGT_2G_ABORT_TASK;
rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, mcmd->tmr_func,
le16_to_cpu(iocb->u.isp2x.seq_id));
if (rc != 0) {
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060,
"qla_target(%d): tgt_ops->handle_tmr() failed: %d\n",
vha->vp_idx, rc);
mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
return -EFAULT;
}
return 0;
}
/* ha->hardware_lock supposed to be held on entry */
static int qlt_abort_task(struct scsi_qla_host *vha,
struct imm_ntfy_from_isp *iocb)
{
struct qla_hw_data *ha = vha->hw;
struct fc_port *sess;
int loop_id;
unsigned long flags;
loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb);
spin_lock_irqsave(&ha->tgt.sess_lock, flags);
sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
if (sess == NULL) {
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025,
"qla_target(%d): task abort for unexisting "
"session\n", vha->vp_idx);
return qlt_sched_sess_work(vha->vha_tgt.qla_tgt,
QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb));
}
return __qlt_abort_task(vha, iocb, sess);
}
void qlt_logo_completion_handler(fc_port_t *fcport, int rc)
{
if (rc != MBS_COMMAND_COMPLETE) {
ql_dbg(ql_dbg_tgt_mgt, fcport->vha, 0xf093,
"%s: se_sess %p / sess %p from"
" port %8phC loop_id %#04x s_id %02x:%02x:%02x"
" LOGO failed: %#x\n",
__func__,
fcport->se_sess,
fcport,
fcport->port_name, fcport->loop_id,
fcport->d_id.b.domain, fcport->d_id.b.area,
fcport->d_id.b.al_pa, rc);
}
fcport->logout_completed = 1;
}
/*
* ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list)
*
* Schedules sessions with matching port_id/loop_id but different wwn for
* deletion. Returns existing session with matching wwn if present.
* Null otherwise.
*/
struct fc_port *
qlt_find_sess_invalidate_other(scsi_qla_host_t *vha, uint64_t wwn,
port_id_t port_id, uint16_t loop_id, struct fc_port **conflict_sess)
{
struct fc_port *sess = NULL, *other_sess;
uint64_t other_wwn;
*conflict_sess = NULL;
list_for_each_entry(other_sess, &vha->vp_fcports, list) {
other_wwn = wwn_to_u64(other_sess->port_name);
if (wwn == other_wwn) {
WARN_ON(sess);
sess = other_sess;
continue;
}
/* find other sess with nport_id collision */
if (port_id.b24 == other_sess->d_id.b24) {
if (loop_id != other_sess->loop_id) {
ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000c,
"Invalidating sess %p loop_id %d wwn %llx.\n",
other_sess, other_sess->loop_id, other_wwn);
/*
* logout_on_delete is set by default, but another
* session that has the same s_id/loop_id combo
* might have cleared it when requested this session
* deletion, so don't touch it
*/
qlt_schedule_sess_for_deletion(other_sess, true);
} else {
/*
* Another wwn used to have our s_id/loop_id
* kill the session, but don't free the loop_id
*/
ql_dbg(ql_dbg_tgt_tmr, vha, 0xffff,
"Invalidating sess %p loop_id %d wwn %llx.\n",
other_sess, other_sess->loop_id, other_wwn);
other_sess->keep_nport_handle = 1;
*conflict_sess = other_sess;
qlt_schedule_sess_for_deletion(other_sess,
true);
}
continue;
}
/* find other sess with nport handle collision */
if ((loop_id == other_sess->loop_id) &&
(loop_id != FC_NO_LOOP_ID)) {
ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000d,
"Invalidating sess %p loop_id %d wwn %llx.\n",
other_sess, other_sess->loop_id, other_wwn);
/* Same loop_id but different s_id
* Ok to kill and logout */
qlt_schedule_sess_for_deletion(other_sess, true);
}
}
return sess;
}
/* Abort any commands for this s_id waiting on qla_tgt_wq workqueue */
static int abort_cmds_for_s_id(struct scsi_qla_host *vha, port_id_t *s_id)
{
struct qla_tgt_sess_op *op;
struct qla_tgt_cmd *cmd;
uint32_t key;
int count = 0;
key = (((u32)s_id->b.domain << 16) |
((u32)s_id->b.area << 8) |
((u32)s_id->b.al_pa));
spin_lock(&vha->cmd_list_lock);
list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
if (op_key == key) {
op->aborted = true;
count++;
}
}
list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) {
uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
if (op_key == key) {
op->aborted = true;
count++;
}
}
list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
uint32_t cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id);
if (cmd_key == key) {
cmd->aborted = 1;
count++;
}
}
spin_unlock(&vha->cmd_list_lock);
return count;
}
/*
* ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
*/
static int qlt_24xx_handle_els(struct scsi_qla_host *vha,
struct imm_ntfy_from_isp *iocb)
{
struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
struct qla_hw_data *ha = vha->hw;
struct fc_port *sess = NULL, *conflict_sess = NULL;
uint64_t wwn;
port_id_t port_id;
uint16_t loop_id;
uint16_t wd3_lo;
int res = 0;
struct qlt_plogi_ack_t *pla;
unsigned long flags;
wwn = wwn_to_u64(iocb->u.isp24.port_name);
port_id.b.domain = iocb->u.isp24.port_id[2];
port_id.b.area = iocb->u.isp24.port_id[1];
port_id.b.al_pa = iocb->u.isp24.port_id[0];
port_id.b.rsvd_1 = 0;
loop_id = le16_to_cpu(iocb->u.isp24.nport_handle);
ql_dbg(ql_dbg_disc, vha, 0xf026,
"qla_target(%d): Port ID: %02x:%02x:%02x ELS opcode: 0x%02x lid %d %8phC\n",
vha->vp_idx, iocb->u.isp24.port_id[2],
iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0],
iocb->u.isp24.status_subcode, loop_id,
iocb->u.isp24.port_name);
/* res = 1 means ack at the end of thread
* res = 0 means ack async/later.
*/
switch (iocb->u.isp24.status_subcode) {
case ELS_PLOGI:
/* Mark all stale commands in qla_tgt_wq for deletion */
abort_cmds_for_s_id(vha, &port_id);
if (wwn) {
spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags);
sess = qlt_find_sess_invalidate_other(vha, wwn,
port_id, loop_id, &conflict_sess);
spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags);
}
if (IS_SW_RESV_ADDR(port_id)) {
res = 1;
break;
}
pla = qlt_plogi_ack_find_add(vha, &port_id, iocb);
if (!pla) {
qlt_send_term_imm_notif(vha, iocb, 1);
break;
}
res = 0;
if (conflict_sess) {
conflict_sess->login_gen++;
qlt_plogi_ack_link(vha, pla, conflict_sess,
QLT_PLOGI_LINK_CONFLICT);
}
if (!sess) {
pla->ref_count++;
qla24xx_post_newsess_work(vha, &port_id,
iocb->u.isp24.port_name, pla);
res = 0;
break;
}
qlt_plogi_ack_link(vha, pla, sess, QLT_PLOGI_LINK_SAME_WWN);
sess->fw_login_state = DSC_LS_PLOGI_PEND;
sess->d_id = port_id;
sess->login_gen++;
switch (sess->disc_state) {
case DSC_DELETED:
qlt_plogi_ack_unref(vha, pla);
break;
default:
/*
* Under normal circumstances we want to release nport handle
* during LOGO process to avoid nport handle leaks inside FW.
* The exception is when LOGO is done while another PLOGI with
* the same nport handle is waiting as might be the case here.
* Note: there is always a possibily of a race where session
* deletion has already started for other reasons (e.g. ACL
* removal) and now PLOGI arrives:
* 1. if PLOGI arrived in FW after nport handle has been freed,
* FW must have assigned this PLOGI a new/same handle and we
* can proceed ACK'ing it as usual when session deletion
* completes.
* 2. if PLOGI arrived in FW before LOGO with LCF_FREE_NPORT
* bit reached it, the handle has now been released. We'll
* get an error when we ACK this PLOGI. Nothing will be sent
* back to initiator. Initiator should eventually retry
* PLOGI and situation will correct itself.
*/
sess->keep_nport_handle = ((sess->loop_id == loop_id) &&
(sess->d_id.b24 == port_id.b24));
ql_dbg(ql_dbg_disc, vha, 0xffff,
"%s %d %8phC post del sess\n",
__func__, __LINE__, sess->port_name);
qlt_schedule_sess_for_deletion_lock(sess);
break;
}
break;
case ELS_PRLI:
wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo);
if (wwn) {
spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags);
sess = qlt_find_sess_invalidate_other(vha, wwn, port_id,
loop_id, &conflict_sess);
spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags);
}
if (conflict_sess) {
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09b,
"PRLI with conflicting sess %p port %8phC\n",
conflict_sess, conflict_sess->port_name);
qlt_send_term_imm_notif(vha, iocb, 1);
res = 0;
break;
}
if (sess != NULL) {
if (sess->fw_login_state != DSC_LS_PLOGI_PEND &&
sess->fw_login_state != DSC_LS_PLOGI_COMP) {
/*
* Impatient initiator sent PRLI before last
* PLOGI could finish. Will force him to re-try,
* while last one finishes.
*/
ql_log(ql_log_warn, sess->vha, 0xf095,
"sess %p PRLI received, before plogi ack.\n",
sess);
qlt_send_term_imm_notif(vha, iocb, 1);
res = 0;
break;
}
/*
* This shouldn't happen under normal circumstances,
* since we have deleted the old session during PLOGI
*/
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf096,
"PRLI (loop_id %#04x) for existing sess %p (loop_id %#04x)\n",
sess->loop_id, sess, iocb->u.isp24.nport_handle);
sess->local = 0;
sess->loop_id = loop_id;
sess->d_id = port_id;
sess->fw_login_state = DSC_LS_PRLI_PEND;
if (wd3_lo & BIT_7)
sess->conf_compl_supported = 1;
if ((wd3_lo & BIT_4) == 0)
sess->port_type = FCT_INITIATOR;
else
sess->port_type = FCT_TARGET;
}
res = 1; /* send notify ack */
/* Make session global (not used in fabric mode) */
if (ha->current_topology != ISP_CFG_F) {
if (sess) {
ql_dbg(ql_dbg_disc, vha, 0xffff,
"%s %d %8phC post nack\n",
__func__, __LINE__, sess->port_name);
qla24xx_post_nack_work(vha, sess, iocb,
SRB_NACK_PRLI);
res = 0;
} else {
set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
qla2xxx_wake_dpc(vha);
}
} else {
if (sess) {
ql_dbg(ql_dbg_disc, vha, 0xffff,
"%s %d %8phC post nack\n",
__func__, __LINE__, sess->port_name);
qla24xx_post_nack_work(vha, sess, iocb,
SRB_NACK_PRLI);
res = 0;
}
}
break;
case ELS_TPRLO:
if (le16_to_cpu(iocb->u.isp24.flags) &
NOTIFY24XX_FLAGS_GLOBAL_TPRLO) {
loop_id = 0xFFFF;
qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS);
res = 1;
break;
}
/* drop through */
case ELS_LOGO:
case ELS_PRLO:
spin_lock_irqsave(&ha->tgt.sess_lock, flags);
sess = qla2x00_find_fcport_by_loopid(vha, loop_id);
spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
if (sess) {
sess->login_gen++;
sess->fw_login_state = DSC_LS_LOGO_PEND;
sess->logo_ack_needed = 1;
memcpy(sess->iocb, iocb, IOCB_SIZE);
}
res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
ql_dbg(ql_dbg_disc, vha, 0xffff,
"%s: logo %llx res %d sess %p ",
__func__, wwn, res, sess);
if (res == 0) {
/*
* cmd went upper layer, look for qlt_xmit_tm_rsp()
* for LOGO_ACK & sess delete
*/
BUG_ON(!sess);
res = 0;
} else {
/* cmd did not go to upper layer. */
if (sess) {
qlt_schedule_sess_for_deletion_lock(sess);
res = 0;
}
/* else logo will be ack */
}
break;
case ELS_PDISC:
case ELS_ADISC:
{
struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
if (tgt->link_reinit_iocb_pending) {
qlt_send_notify_ack(vha, &tgt->link_reinit_iocb,
0, 0, 0, 0, 0, 0);
tgt->link_reinit_iocb_pending = 0;
}
sess = qla2x00_find_fcport_by_wwpn(vha,
iocb->u.isp24.port_name, 1);
if (sess) {
ql_dbg(ql_dbg_disc, vha, 0xffff,
"sess %p lid %d|%d DS %d LS %d\n",
sess, sess->loop_id, loop_id,
sess->disc_state, sess->fw_login_state);
}
res = 1; /* send notify ack */
break;
}
case ELS_FLOGI: /* should never happen */
default:
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061,
"qla_target(%d): Unsupported ELS command %x "
"received\n", vha->vp_idx, iocb->u.isp24.status_subcode);
res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
break;
}
return res;
}
/*
* ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
*/
static void qlt_handle_imm_notify(struct scsi_qla_host *vha,
struct imm_ntfy_from_isp *iocb)
{
struct qla_hw_data *ha = vha->hw;
uint32_t add_flags = 0;
int send_notify_ack = 1;
uint16_t status;
status = le16_to_cpu(iocb->u.isp2x.status);
switch (status) {
case IMM_NTFY_LIP_RESET:
{
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032,
"qla_target(%d): LIP reset (loop %#x), subcode %x\n",
vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle),
iocb->u.isp24.status_subcode);
if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
send_notify_ack = 0;
break;
}
case IMM_NTFY_LIP_LINK_REINIT:
{
struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033,
"qla_target(%d): LINK REINIT (loop %#x, "
"subcode %x)\n", vha->vp_idx,
le16_to_cpu(iocb->u.isp24.nport_handle),
iocb->u.isp24.status_subcode);
if (tgt->link_reinit_iocb_pending) {
qlt_send_notify_ack(vha, &tgt->link_reinit_iocb,
0, 0, 0, 0, 0, 0);
}
memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb));
tgt->link_reinit_iocb_pending = 1;
/*
* QLogic requires to wait after LINK REINIT for possible
* PDISC or ADISC ELS commands
*/
send_notify_ack = 0;
break;
}
case IMM_NTFY_PORT_LOGOUT:
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034,
"qla_target(%d): Port logout (loop "
"%#x, subcode %x)\n", vha->vp_idx,
le16_to_cpu(iocb->u.isp24.nport_handle),
iocb->u.isp24.status_subcode);
if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0)
send_notify_ack = 0;
/* The sessions will be cleared in the callback, if needed */
break;
case IMM_NTFY_GLBL_TPRLO:
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035,
"qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status);
if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
send_notify_ack = 0;
/* The sessions will be cleared in the callback, if needed */
break;
case IMM_NTFY_PORT_CONFIG:
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036,
"qla_target(%d): Port config changed (%x)\n", vha->vp_idx,
status);
if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
send_notify_ack = 0;
/* The sessions will be cleared in the callback, if needed */
break;
case IMM_NTFY_GLBL_LOGO:
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a,
"qla_target(%d): Link failure detected\n",
vha->vp_idx);
/* I_T nexus loss */
if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
send_notify_ack = 0;
break;
case IMM_NTFY_IOCB_OVERFLOW:
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b,
"qla_target(%d): Cannot provide requested "
"capability (IOCB overflowed the immediate notify "
"resource count)\n", vha->vp_idx);
break;
case IMM_NTFY_ABORT_TASK:
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037,
"qla_target(%d): Abort Task (S %08x I %#x -> "
"L %#x)\n", vha->vp_idx,
le16_to_cpu(iocb->u.isp2x.seq_id),
GET_TARGET_ID(ha, (struct atio_from_isp *)iocb),
le16_to_cpu(iocb->u.isp2x.lun));
if (qlt_abort_task(vha, iocb) == 0)
send_notify_ack = 0;
break;
case IMM_NTFY_RESOURCE:
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c,
"qla_target(%d): Out of resources, host %ld\n",
vha->vp_idx, vha->host_no);
break;
case IMM_NTFY_MSG_RX:
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038,
"qla_target(%d): Immediate notify task %x\n",
vha->vp_idx, iocb->u.isp2x.task_flags);
if (qlt_handle_task_mgmt(vha, iocb) == 0)
send_notify_ack = 0;
break;
case IMM_NTFY_ELS:
if (qlt_24xx_handle_els(vha, iocb) == 0)
send_notify_ack = 0;
break;
default:
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d,
"qla_target(%d): Received unknown immediate "
"notify status %x\n", vha->vp_idx, status);
break;
}
if (send_notify_ack)
qlt_send_notify_ack(vha, iocb, add_flags, 0, 0, 0, 0, 0);
}
/*
* ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
* This function sends busy to ISP 2xxx or 24xx.
*/
static int __qlt_send_busy(struct scsi_qla_host *vha,
struct atio_from_isp *atio, uint16_t status)
{
struct ctio7_to_24xx *ctio24;
struct qla_hw_data *ha = vha->hw;
request_t *pkt;
struct fc_port *sess = NULL;
unsigned long flags;
spin_lock_irqsave(&ha->tgt.sess_lock, flags);
sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
atio->u.isp24.fcp_hdr.s_id);
spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
if (!sess) {
qlt_send_term_exchange(vha, NULL, atio, 1, 0);
return 0;
}
/* Sending marker isn't necessary, since we called from ISR */
pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
if (!pkt) {
ql_dbg(ql_dbg_io, vha, 0x3063,
"qla_target(%d): %s failed: unable to allocate "
"request packet", vha->vp_idx, __func__);
return -ENOMEM;
}
vha->tgt_counters.num_q_full_sent++;
pkt->entry_count = 1;
pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
ctio24 = (struct ctio7_to_24xx *)pkt;
ctio24->entry_type = CTIO_TYPE7;
ctio24->nport_handle = sess->loop_id;
ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
ctio24->vp_index = vha->vp_idx;
ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
ctio24->exchange_addr = atio->u.isp24.exchange_addr;
ctio24->u.status1.flags = (atio->u.isp24.attr << 9) |
cpu_to_le16(
CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS |
CTIO7_FLAGS_DONT_RET_CTIO);
/*
* CTIO from fw w/o se_cmd doesn't provide enough info to retry it,
* if the explicit conformation is used.
*/
ctio24->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id);
ctio24->u.status1.scsi_status = cpu_to_le16(status);
/* Memory Barrier */
wmb();
qla2x00_start_iocbs(vha, vha->req);
return 0;
}
/*
* This routine is used to allocate a command for either a QFull condition
* (ie reply SAM_STAT_BUSY) or to terminate an exchange that did not go
* out previously.
*/
static void
qlt_alloc_qfull_cmd(struct scsi_qla_host *vha,
struct atio_from_isp *atio, uint16_t status, int qfull)
{
struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
struct qla_hw_data *ha = vha->hw;
struct fc_port *sess;
struct se_session *se_sess;
struct qla_tgt_cmd *cmd;
int tag;
if (unlikely(tgt->tgt_stop)) {
ql_dbg(ql_dbg_io, vha, 0x300a,
"New command while device %p is shutting down\n", tgt);
return;
}
if ((vha->hw->tgt.num_qfull_cmds_alloc + 1) > MAX_QFULL_CMDS_ALLOC) {
vha->hw->tgt.num_qfull_cmds_dropped++;
if (vha->hw->tgt.num_qfull_cmds_dropped >
vha->qla_stats.stat_max_qfull_cmds_dropped)
vha->qla_stats.stat_max_qfull_cmds_dropped =
vha->hw->tgt.num_qfull_cmds_dropped;
ql_dbg(ql_dbg_io, vha, 0x3068,
"qla_target(%d): %s: QFull CMD dropped[%d]\n",
vha->vp_idx, __func__,
vha->hw->tgt.num_qfull_cmds_dropped);
qlt_chk_exch_leak_thresh_hold(vha);
return;
}
sess = ha->tgt.tgt_ops->find_sess_by_s_id
(vha, atio->u.isp24.fcp_hdr.s_id);
if (!sess)
return;
se_sess = sess->se_sess;
tag = percpu_ida_alloc(&se_sess->sess_tag_pool, TASK_RUNNING);
if (tag < 0)
return;
cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag];
if (!cmd) {
ql_dbg(ql_dbg_io, vha, 0x3009,
"qla_target(%d): %s: Allocation of cmd failed\n",
vha->vp_idx, __func__);
vha->hw->tgt.num_qfull_cmds_dropped++;
if (vha->hw->tgt.num_qfull_cmds_dropped >
vha->qla_stats.stat_max_qfull_cmds_dropped)
vha->qla_stats.stat_max_qfull_cmds_dropped =
vha->hw->tgt.num_qfull_cmds_dropped;
qlt_chk_exch_leak_thresh_hold(vha);
return;
}
memset(cmd, 0, sizeof(struct qla_tgt_cmd));
qlt_incr_num_pend_cmds(vha);
INIT_LIST_HEAD(&cmd->cmd_list);
memcpy(&cmd->atio, atio, sizeof(*atio));
cmd->tgt = vha->vha_tgt.qla_tgt;
cmd->vha = vha;
cmd->reset_count = vha->hw->chip_reset;
cmd->q_full = 1;
if (qfull) {
cmd->q_full = 1;
/* NOTE: borrowing the state field to carry the status */
cmd->state = status;
} else
cmd->term_exchg = 1;
list_add_tail(&cmd->cmd_list, &vha->hw->tgt.q_full_list);
vha->hw->tgt.num_qfull_cmds_alloc++;
if (vha->hw->tgt.num_qfull_cmds_alloc >
vha->qla_stats.stat_max_qfull_cmds_alloc)
vha->qla_stats.stat_max_qfull_cmds_alloc =
vha->hw->tgt.num_qfull_cmds_alloc;
}
int
qlt_free_qfull_cmds(struct scsi_qla_host *vha)
{
struct qla_hw_data *ha = vha->hw;
unsigned long flags;
struct qla_tgt_cmd *cmd, *tcmd;
struct list_head free_list;
int rc = 0;
if (list_empty(&ha->tgt.q_full_list))
return 0;
INIT_LIST_HEAD(&free_list);
spin_lock_irqsave(&vha->hw->hardware_lock, flags);
if (list_empty(&ha->tgt.q_full_list)) {
spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
return 0;
}
list_for_each_entry_safe(cmd, tcmd, &ha->tgt.q_full_list, cmd_list) {
if (cmd->q_full)
/* cmd->state is a borrowed field to hold status */
rc = __qlt_send_busy(vha, &cmd->atio, cmd->state);
else if (cmd->term_exchg)
rc = __qlt_send_term_exchange(vha, NULL, &cmd->atio);
if (rc == -ENOMEM)
break;
if (cmd->q_full)
ql_dbg(ql_dbg_io, vha, 0x3006,
"%s: busy sent for ox_id[%04x]\n", __func__,
be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
else if (cmd->term_exchg)
ql_dbg(ql_dbg_io, vha, 0x3007,
"%s: Term exchg sent for ox_id[%04x]\n", __func__,
be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
else
ql_dbg(ql_dbg_io, vha, 0x3008,
"%s: Unexpected cmd in QFull list %p\n", __func__,
cmd);
list_del(&cmd->cmd_list);
list_add_tail(&cmd->cmd_list, &free_list);
/* piggy back on hardware_lock for protection */
vha->hw->tgt.num_qfull_cmds_alloc--;
}
spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
cmd = NULL;
list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) {
list_del(&cmd->cmd_list);
/* This cmd was never sent to TCM. There is no need
* to schedule free or call free_cmd
*/
qlt_free_cmd(cmd);
}
return rc;
}
static void
qlt_send_busy(struct scsi_qla_host *vha,
struct atio_from_isp *atio, uint16_t status)
{
int rc = 0;
rc = __qlt_send_busy(vha, atio, status);
if (rc == -ENOMEM)
qlt_alloc_qfull_cmd(vha, atio, status, 1);
}
static int
qlt_chk_qfull_thresh_hold(struct scsi_qla_host *vha,
struct atio_from_isp *atio, bool ha_locked)
{
struct qla_hw_data *ha = vha->hw;
uint16_t status;
unsigned long flags;
if (ha->tgt.num_pend_cmds < Q_FULL_THRESH_HOLD(ha))
return 0;
if (!ha_locked)
spin_lock_irqsave(&ha->hardware_lock, flags);
status = temp_sam_status;
qlt_send_busy(vha, atio, status);
if (!ha_locked)
spin_unlock_irqrestore(&ha->hardware_lock, flags);
return 1;
}
/* ha->hardware_lock supposed to be held on entry */
/* called via callback from qla2xxx */
static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha,
struct atio_from_isp *atio, uint8_t ha_locked)
{
struct qla_hw_data *ha = vha->hw;
struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
int rc;
unsigned long flags;
if (unlikely(tgt == NULL)) {
ql_dbg(ql_dbg_tgt, vha, 0x3064,
"ATIO pkt, but no tgt (ha %p)", ha);
return;
}
/*
* In tgt_stop mode we also should allow all requests to pass.
* Otherwise, some commands can stuck.
*/
tgt->atio_irq_cmd_count++;
switch (atio->u.raw.entry_type) {
case ATIO_TYPE7:
if (unlikely(atio->u.isp24.exchange_addr ==
ATIO_EXCHANGE_ADDRESS_UNKNOWN)) {
ql_dbg(ql_dbg_io, vha, 0x3065,
"qla_target(%d): ATIO_TYPE7 "
"received with UNKNOWN exchange address, "
"sending QUEUE_FULL\n", vha->vp_idx);
if (!ha_locked)
spin_lock_irqsave(&ha->hardware_lock, flags);
qlt_send_busy(vha, atio, SAM_STAT_TASK_SET_FULL);
if (!ha_locked)
spin_unlock_irqrestore(&ha->hardware_lock, flags);
break;
}
if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0)) {
rc = qlt_chk_qfull_thresh_hold(vha, atio, ha_locked);
if (rc != 0) {
tgt->atio_irq_cmd_count--;
return;
}
rc = qlt_handle_cmd_for_atio(vha, atio);
} else {
rc = qlt_handle_task_mgmt(vha, atio);
}
if (unlikely(rc != 0)) {
if (rc == -ESRCH) {
if (!ha_locked)
spin_lock_irqsave
(&ha->hardware_lock, flags);
#if 1 /* With TERM EXCHANGE some FC cards refuse to boot */
qlt_send_busy(vha, atio, SAM_STAT_BUSY);
#else
qlt_send_term_exchange(vha, NULL, atio, 1, 0);
#endif
if (!ha_locked)
spin_unlock_irqrestore
(&ha->hardware_lock, flags);
} else {
if (tgt->tgt_stop) {
ql_dbg(ql_dbg_tgt, vha, 0xe059,
"qla_target: Unable to send "
"command to target for req, "
"ignoring.\n");
} else {
ql_dbg(ql_dbg_tgt, vha, 0xe05a,
"qla_target(%d): Unable to send "
"command to target, sending BUSY "
"status.\n", vha->vp_idx);
if (!ha_locked)
spin_lock_irqsave(
&ha->hardware_lock, flags);
qlt_send_busy(vha, atio, SAM_STAT_BUSY);
if (!ha_locked)
spin_unlock_irqrestore(
&ha->hardware_lock, flags);
}
}
}
break;
case IMMED_NOTIFY_TYPE:
{
if (unlikely(atio->u.isp2x.entry_status != 0)) {
ql_dbg(ql_dbg_tgt, vha, 0xe05b,
"qla_target(%d): Received ATIO packet %x "
"with error status %x\n", vha->vp_idx,
atio->u.raw.entry_type,
atio->u.isp2x.entry_status);
break;
}
ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO");
if (!ha_locked)
spin_lock_irqsave(&ha->hardware_lock, flags);
qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio);
if (!ha_locked)
spin_unlock_irqrestore(&ha->hardware_lock, flags);
break;
}
default:
ql_dbg(ql_dbg_tgt, vha, 0xe05c,
"qla_target(%d): Received unknown ATIO atio "
"type %x\n", vha->vp_idx, atio->u.raw.entry_type);
break;
}
tgt->atio_irq_cmd_count--;
}
/* ha->hardware_lock supposed to be held on entry */
/* called via callback from qla2xxx */
static void qlt_response_pkt(struct scsi_qla_host *vha, response_t *pkt)
{
struct qla_hw_data *ha = vha->hw;
struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
if (unlikely(tgt == NULL)) {
ql_dbg(ql_dbg_tgt, vha, 0xe05d,
"qla_target(%d): Response pkt %x received, but no "
"tgt (ha %p)\n", vha->vp_idx, pkt->entry_type, ha);
return;
}
/*
* In tgt_stop mode we also should allow all requests to pass.
* Otherwise, some commands can stuck.
*/
tgt->irq_cmd_count++;
switch (pkt->entry_type) {
case CTIO_CRC2:
case CTIO_TYPE7:
{
struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
qlt_do_ctio_completion(vha, entry->handle,
le16_to_cpu(entry->status)|(pkt->entry_status << 16),
entry);
break;
}
case ACCEPT_TGT_IO_TYPE:
{
struct atio_from_isp *atio = (struct atio_from_isp *)pkt;
int rc;
if (atio->u.isp2x.status !=
cpu_to_le16(ATIO_CDB_VALID)) {
ql_dbg(ql_dbg_tgt, vha, 0xe05e,
"qla_target(%d): ATIO with error "
"status %x received\n", vha->vp_idx,
le16_to_cpu(atio->u.isp2x.status));
break;
}
rc = qlt_chk_qfull_thresh_hold(vha, atio, true);
if (rc != 0) {
tgt->irq_cmd_count--;
return;
}
rc = qlt_handle_cmd_for_atio(vha, atio);
if (unlikely(rc != 0)) {
if (rc == -ESRCH) {
#if 1 /* With TERM EXCHANGE some FC cards refuse to boot */
qlt_send_busy(vha, atio, 0);
#else
qlt_send_term_exchange(vha, NULL, atio, 1, 0);
#endif
} else {
if (tgt->tgt_stop) {
ql_dbg(ql_dbg_tgt, vha, 0xe05f,
"qla_target: Unable to send "
"command to target, sending TERM "
"EXCHANGE for rsp\n");
qlt_send_term_exchange(vha, NULL,
atio, 1, 0);
} else {
ql_dbg(ql_dbg_tgt, vha, 0xe060,
"qla_target(%d): Unable to send "
"command to target, sending BUSY "
"status\n", vha->vp_idx);
qlt_send_busy(vha, atio, 0);
}
}
}
}
break;
case CONTINUE_TGT_IO_TYPE:
{
struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
qlt_do_ctio_completion(vha, entry->handle,
le16_to_cpu(entry->status)|(pkt->entry_status << 16),
entry);
break;
}
case CTIO_A64_TYPE:
{
struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
qlt_do_ctio_completion(vha, entry->handle,
le16_to_cpu(entry->status)|(pkt->entry_status << 16),
entry);
break;
}
case IMMED_NOTIFY_TYPE:
ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n");
qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt);
break;
case NOTIFY_ACK_TYPE:
if (tgt->notify_ack_expected > 0) {
struct nack_to_isp *entry = (struct nack_to_isp *)pkt;
ql_dbg(ql_dbg_tgt, vha, 0xe036,
"NOTIFY_ACK seq %08x status %x\n",
le16_to_cpu(entry->u.isp2x.seq_id),
le16_to_cpu(entry->u.isp2x.status));
tgt->notify_ack_expected--;
if (entry->u.isp2x.status !=
cpu_to_le16(NOTIFY_ACK_SUCCESS)) {
ql_dbg(ql_dbg_tgt, vha, 0xe061,
"qla_target(%d): NOTIFY_ACK "
"failed %x\n", vha->vp_idx,
le16_to_cpu(entry->u.isp2x.status));
}
} else {
ql_dbg(ql_dbg_tgt, vha, 0xe062,
"qla_target(%d): Unexpected NOTIFY_ACK received\n",
vha->vp_idx);
}
break;
case ABTS_RECV_24XX:
ql_dbg(ql_dbg_tgt, vha, 0xe037,
"ABTS_RECV_24XX: instance %d\n", vha->vp_idx);
qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt);
break;
case ABTS_RESP_24XX:
if (tgt->abts_resp_expected > 0) {
struct abts_resp_from_24xx_fw *entry =
(struct abts_resp_from_24xx_fw *)pkt;
ql_dbg(ql_dbg_tgt, vha, 0xe038,
"ABTS_RESP_24XX: compl_status %x\n",
entry->compl_status);
tgt->abts_resp_expected--;
if (le16_to_cpu(entry->compl_status) !=
ABTS_RESP_COMPL_SUCCESS) {
if ((entry->error_subcode1 == 0x1E) &&
(entry->error_subcode2 == 0)) {
/*
* We've got a race here: aborted
* exchange not terminated, i.e.
* response for the aborted command was
* sent between the abort request was
* received and processed.
* Unfortunately, the firmware has a
* silly requirement that all aborted
* exchanges must be explicitely
* terminated, otherwise it refuses to
* send responses for the abort
* requests. So, we have to
* (re)terminate the exchange and retry
* the abort response.
*/
qlt_24xx_retry_term_exchange(vha,
entry);
} else
ql_dbg(ql_dbg_tgt, vha, 0xe063,
"qla_target(%d): ABTS_RESP_24XX "
"failed %x (subcode %x:%x)",
vha->vp_idx, entry->compl_status,
entry->error_subcode1,
entry->error_subcode2);
}
} else {
ql_dbg(ql_dbg_tgt, vha, 0xe064,
"qla_target(%d): Unexpected ABTS_RESP_24XX "
"received\n", vha->vp_idx);
}
break;
default:
ql_dbg(ql_dbg_tgt, vha, 0xe065,
"qla_target(%d): Received unknown response pkt "
"type %x\n", vha->vp_idx, pkt->entry_type);
break;
}
tgt->irq_cmd_count--;
}
/*
* ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
*/
void qlt_async_event(uint16_t code, struct scsi_qla_host *vha,
uint16_t *mailbox)
{
struct qla_hw_data *ha = vha->hw;
struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
int login_code;
if (!ha->tgt.tgt_ops)
return;
if (unlikely(tgt == NULL)) {
ql_dbg(ql_dbg_tgt, vha, 0xe03a,
"ASYNC EVENT %#x, but no tgt (ha %p)\n", code, ha);
return;
}
if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) &&
IS_QLA2100(ha))
return;
/*
* In tgt_stop mode we also should allow all requests to pass.
* Otherwise, some commands can stuck.
*/
tgt->irq_cmd_count++;
switch (code) {
case MBA_RESET: /* Reset */
case MBA_SYSTEM_ERR: /* System Error */
case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */
case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a,
"qla_target(%d): System error async event %#x "
"occurred", vha->vp_idx, code);
break;
case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */
set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
break;
case MBA_LOOP_UP:
{
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b,
"qla_target(%d): Async LOOP_UP occurred "
"(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx,
le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
if (tgt->link_reinit_iocb_pending) {
qlt_send_notify_ack(vha, (void *)&tgt->link_reinit_iocb,
0, 0, 0, 0, 0, 0);
tgt->link_reinit_iocb_pending = 0;
}
break;
}
case MBA_LIP_OCCURRED:
case MBA_LOOP_DOWN:
case MBA_LIP_RESET:
case MBA_RSCN_UPDATE:
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c,
"qla_target(%d): Async event %#x occurred "
"(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code,
le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
break;
case MBA_REJECTED_FCP_CMD:
ql_dbg(ql_dbg_tgt_mgt, vha, 0xffff,
"qla_target(%d): Async event LS_REJECT occurred "
"(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx,
le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
if (le16_to_cpu(mailbox[3]) == 1) {
/* exchange starvation. */
vha->hw->exch_starvation++;
if (vha->hw->exch_starvation > 5) {
ql_log(ql_log_warn, vha, 0xffff,
"Exchange starvation-. Resetting RISC\n");
vha->hw->exch_starvation = 0;
if (IS_P3P_TYPE(vha->hw))
set_bit(FCOE_CTX_RESET_NEEDED,
&vha->dpc_flags);
else
set_bit(ISP_ABORT_NEEDED,
&vha->dpc_flags);
qla2xxx_wake_dpc(vha);
}
}
break;
case MBA_PORT_UPDATE:
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d,
"qla_target(%d): Port update async event %#x "
"occurred: updating the ports database (m[0]=%x, m[1]=%x, "
"m[2]=%x, m[3]=%x)", vha->vp_idx, code,
le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
login_code = le16_to_cpu(mailbox[2]);
if (login_code == 0x4) {
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e,
"Async MB 2: Got PLOGI Complete\n");
vha->hw->exch_starvation = 0;
} else if (login_code == 0x7)
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f,
"Async MB 2: Port Logged Out\n");
break;
default:
break;
}
tgt->irq_cmd_count--;
}
static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha,
uint16_t loop_id)
{
fc_port_t *fcport, *tfcp, *del;
int rc;
unsigned long flags;
u8 newfcport = 0;
fcport = kzalloc(sizeof(*fcport), GFP_KERNEL);
if (!fcport) {
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f,
"qla_target(%d): Allocation of tmp FC port failed",
vha->vp_idx);
return NULL;
}
fcport->loop_id = loop_id;
rc = qla24xx_gpdb_wait(vha, fcport, 0);
if (rc != QLA_SUCCESS) {
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070,
"qla_target(%d): Failed to retrieve fcport "
"information -- get_port_database() returned %x "
"(loop_id=0x%04x)", vha->vp_idx, rc, loop_id);
kfree(fcport);
return NULL;
}
del = NULL;
spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
tfcp = qla2x00_find_fcport_by_wwpn(vha, fcport->port_name, 1);
if (tfcp) {
tfcp->d_id = fcport->d_id;
tfcp->port_type = fcport->port_type;
tfcp->supported_classes = fcport->supported_classes;
tfcp->flags |= fcport->flags;
del = fcport;
fcport = tfcp;
} else {
if (vha->hw->current_topology == ISP_CFG_F)
fcport->flags |= FCF_FABRIC_DEVICE;
list_add_tail(&fcport->list, &vha->vp_fcports);
if (!IS_SW_RESV_ADDR(fcport->d_id))
vha->fcport_count++;
fcport->login_gen++;
fcport->disc_state = DSC_LOGIN_COMPLETE;
fcport->login_succ = 1;
newfcport = 1;
}
fcport->deleted = 0;
spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
switch (vha->host->active_mode) {
case MODE_INITIATOR:
case MODE_DUAL:
if (newfcport) {
if (!IS_IIDMA_CAPABLE(vha->hw) || !vha->hw->flags.gpsc_supported) {
ql_dbg(ql_dbg_disc, vha, 0xffff,
"%s %d %8phC post upd_fcport fcp_cnt %d\n",
__func__, __LINE__, fcport->port_name, vha->fcport_count);
qla24xx_post_upd_fcport_work(vha, fcport);
} else {
ql_dbg(ql_dbg_disc, vha, 0xffff,
"%s %d %8phC post gpsc fcp_cnt %d\n",
__func__, __LINE__, fcport->port_name, vha->fcport_count);
qla24xx_post_gpsc_work(vha, fcport);
}
}
break;
case MODE_TARGET:
default:
break;
}
if (del)
qla2x00_free_fcport(del);
return fcport;
}
/* Must be called under tgt_mutex */
static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *vha,
uint8_t *s_id)
{
struct fc_port *sess = NULL;
fc_port_t *fcport = NULL;
int rc, global_resets;
uint16_t loop_id = 0;
if ((s_id[0] == 0xFF) && (s_id[1] == 0xFC)) {
/*
* This is Domain Controller, so it should be
* OK to drop SCSI commands from it.
*/
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042,
"Unable to find initiator with S_ID %x:%x:%x",
s_id[0], s_id[1], s_id[2]);
return NULL;
}
mutex_lock(&vha->vha_tgt.tgt_mutex);
retry:
global_resets =
atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count);
rc = qla24xx_get_loop_id(vha, s_id, &loop_id);
if (rc != 0) {
mutex_unlock(&vha->vha_tgt.tgt_mutex);
ql_log(ql_log_info, vha, 0xf071,
"qla_target(%d): Unable to find "
"initiator with S_ID %x:%x:%x",
vha->vp_idx, s_id[0], s_id[1],
s_id[2]);
if (rc == -ENOENT) {
qlt_port_logo_t logo;
sid_to_portid(s_id, &logo.id);
logo.cmd_count = 1;
qlt_send_first_logo(vha, &logo);
}
return NULL;
}
fcport = qlt_get_port_database(vha, loop_id);
if (!fcport) {
mutex_unlock(&vha->vha_tgt.tgt_mutex);
return NULL;
}
if (global_resets !=
atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count)) {
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043,
"qla_target(%d): global reset during session discovery "
"(counter was %d, new %d), retrying", vha->vp_idx,
global_resets,
atomic_read(&vha->vha_tgt.
qla_tgt->tgt_global_resets_count));
goto retry;
}
sess = qlt_create_sess(vha, fcport, true);
mutex_unlock(&vha->vha_tgt.tgt_mutex);
return sess;
}
static void qlt_abort_work(struct qla_tgt *tgt,
struct qla_tgt_sess_work_param *prm)
{
struct scsi_qla_host *vha = tgt->vha;
struct qla_hw_data *ha = vha->hw;
struct fc_port *sess = NULL;
unsigned long flags = 0, flags2 = 0;
uint32_t be_s_id;
uint8_t s_id[3];
int rc;
spin_lock_irqsave(&ha->tgt.sess_lock, flags2);
if (tgt->tgt_stop)
goto out_term2;
s_id[0] = prm->abts.fcp_hdr_le.s_id[2];
s_id[1] = prm->abts.fcp_hdr_le.s_id[1];
s_id[2] = prm->abts.fcp_hdr_le.s_id[0];
sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
(unsigned char *)&be_s_id);
if (!sess) {
spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
sess = qlt_make_local_sess(vha, s_id);
/* sess has got an extra creation ref */
spin_lock_irqsave(&ha->tgt.sess_lock, flags2);
if (!sess)
goto out_term2;
} else {
if (sess->deleted) {
sess = NULL;
goto out_term2;
}
if (!kref_get_unless_zero(&sess->sess_kref)) {
ql_dbg(ql_dbg_tgt_tmr, vha, 0xffff,
"%s: kref_get fail %8phC \n",
__func__, sess->port_name);
sess = NULL;
goto out_term2;
}
}
rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess);
ha->tgt.tgt_ops->put_sess(sess);
spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
if (rc != 0)
goto out_term;
return;
out_term2:
if (sess)
ha->tgt.tgt_ops->put_sess(sess);
spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
out_term:
spin_lock_irqsave(&ha->hardware_lock, flags);
qlt_24xx_send_abts_resp(vha, &prm->abts, FCP_TMF_REJECTED, false);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
}
static void qlt_tmr_work(struct qla_tgt *tgt,
struct qla_tgt_sess_work_param *prm)
{
struct atio_from_isp *a = &prm->tm_iocb2;
struct scsi_qla_host *vha = tgt->vha;
struct qla_hw_data *ha = vha->hw;
struct fc_port *sess = NULL;
unsigned long flags;
uint8_t *s_id = NULL; /* to hide compiler warnings */
int rc;
uint32_t lun, unpacked_lun;
int fn;
void *iocb;
spin_lock_irqsave(&ha->tgt.sess_lock, flags);
if (tgt->tgt_stop)
goto out_term2;
s_id = prm->tm_iocb2.u.isp24.fcp_hdr.s_id;
sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
if (!sess) {
spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
sess = qlt_make_local_sess(vha, s_id);
/* sess has got an extra creation ref */
spin_lock_irqsave(&ha->tgt.sess_lock, flags);
if (!sess)
goto out_term2;
} else {
if (sess->deleted) {
sess = NULL;
goto out_term2;
}
if (!kref_get_unless_zero(&sess->sess_kref)) {
ql_dbg(ql_dbg_tgt_tmr, vha, 0xffff,
"%s: kref_get fail %8phC\n",
__func__, sess->port_name);
sess = NULL;
goto out_term2;
}
}
iocb = a;
lun = a->u.isp24.fcp_cmnd.lun;
fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
rc = qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
ha->tgt.tgt_ops->put_sess(sess);
spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
if (rc != 0)
goto out_term;
return;
out_term2:
if (sess)
ha->tgt.tgt_ops->put_sess(sess);
spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
out_term:
qlt_send_term_exchange(vha, NULL, &prm->tm_iocb2, 1, 0);
}
static void qlt_sess_work_fn(struct work_struct *work)
{
struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work);
struct scsi_qla_host *vha = tgt->vha;
unsigned long flags;
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt);
spin_lock_irqsave(&tgt->sess_work_lock, flags);
while (!list_empty(&tgt->sess_works_list)) {
struct qla_tgt_sess_work_param *prm = list_entry(
tgt->sess_works_list.next, typeof(*prm),
sess_works_list_entry);
/*
* This work can be scheduled on several CPUs at time, so we
* must delete the entry to eliminate double processing
*/
list_del(&prm->sess_works_list_entry);
spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
switch (prm->type) {
case QLA_TGT_SESS_WORK_ABORT:
qlt_abort_work(tgt, prm);
break;
case QLA_TGT_SESS_WORK_TM:
qlt_tmr_work(tgt, prm);
break;
default:
BUG_ON(1);
break;
}
spin_lock_irqsave(&tgt->sess_work_lock, flags);
kfree(prm);
}
spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
}
/* Must be called under tgt_host_action_mutex */
int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha)
{
struct qla_tgt *tgt;
if (!QLA_TGT_MODE_ENABLED())
return 0;
if (!IS_TGT_MODE_CAPABLE(ha)) {
ql_log(ql_log_warn, base_vha, 0xe070,
"This adapter does not support target mode.\n");
return 0;
}
ql_dbg(ql_dbg_tgt, base_vha, 0xe03b,
"Registering target for host %ld(%p).\n", base_vha->host_no, ha);
BUG_ON(base_vha->vha_tgt.qla_tgt != NULL);
tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL);
if (!tgt) {
ql_dbg(ql_dbg_tgt, base_vha, 0xe066,
"Unable to allocate struct qla_tgt\n");
return -ENOMEM;
}
if (!(base_vha->host->hostt->supported_mode & MODE_TARGET))
base_vha->host->hostt->supported_mode |= MODE_TARGET;
tgt->ha = ha;
tgt->vha = base_vha;
init_waitqueue_head(&tgt->waitQ);
INIT_LIST_HEAD(&tgt->del_sess_list);
spin_lock_init(&tgt->sess_work_lock);
INIT_WORK(&tgt->sess_work, qlt_sess_work_fn);
INIT_LIST_HEAD(&tgt->sess_works_list);
atomic_set(&tgt->tgt_global_resets_count, 0);
base_vha->vha_tgt.qla_tgt = tgt;
ql_dbg(ql_dbg_tgt, base_vha, 0xe067,
"qla_target(%d): using 64 Bit PCI addressing",
base_vha->vp_idx);
tgt->tgt_enable_64bit_addr = 1;
/* 3 is reserved */
tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3);
tgt->datasegs_per_cmd = QLA_TGT_DATASEGS_PER_CMD_24XX;
tgt->datasegs_per_cont = QLA_TGT_DATASEGS_PER_CONT_24XX;
mutex_lock(&qla_tgt_mutex);
list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist);
mutex_unlock(&qla_tgt_mutex);
if (ha->tgt.tgt_ops && ha->tgt.tgt_ops->add_target)
ha->tgt.tgt_ops->add_target(base_vha);
return 0;
}
/* Must be called under tgt_host_action_mutex */
int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha)
{
if (!vha->vha_tgt.qla_tgt)
return 0;
if (vha->fc_vport) {
qlt_release(vha->vha_tgt.qla_tgt);
return 0;
}
/* free left over qfull cmds */
qlt_init_term_exchange(vha);
mutex_lock(&qla_tgt_mutex);
list_del(&vha->vha_tgt.qla_tgt->tgt_list_entry);
mutex_unlock(&qla_tgt_mutex);
ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)",
vha->host_no, ha);
qlt_release(vha->vha_tgt.qla_tgt);
return 0;
}
void qlt_remove_target_resources(struct qla_hw_data *ha)
{
struct scsi_qla_host *node;
u32 key = 0;
btree_for_each_safe32(&ha->tgt.host_map, key, node)
btree_remove32(&ha->tgt.host_map, key);
btree_destroy32(&ha->tgt.host_map);
}
static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn,
unsigned char *b)
{
int i;
pr_debug("qla2xxx HW vha->node_name: ");
for (i = 0; i < WWN_SIZE; i++)
pr_debug("%02x ", vha->node_name[i]);
pr_debug("\n");
pr_debug("qla2xxx HW vha->port_name: ");
for (i = 0; i < WWN_SIZE; i++)
pr_debug("%02x ", vha->port_name[i]);
pr_debug("\n");
pr_debug("qla2xxx passed configfs WWPN: ");
put_unaligned_be64(wwpn, b);
for (i = 0; i < WWN_SIZE; i++)
pr_debug("%02x ", b[i]);
pr_debug("\n");
}
/**
* qla_tgt_lport_register - register lport with external module
*
* @qla_tgt_ops: Pointer for tcm_qla2xxx qla_tgt_ops
* @wwpn: Passwd FC target WWPN
* @callback: lport initialization callback for tcm_qla2xxx code
* @target_lport_ptr: pointer for tcm_qla2xxx specific lport data
*/
int qlt_lport_register(void *target_lport_ptr, u64 phys_wwpn,
u64 npiv_wwpn, u64 npiv_wwnn,
int (*callback)(struct scsi_qla_host *, void *, u64, u64))
{
struct qla_tgt *tgt;
struct scsi_qla_host *vha;
struct qla_hw_data *ha;
struct Scsi_Host *host;
unsigned long flags;
int rc;
u8 b[WWN_SIZE];
mutex_lock(&qla_tgt_mutex);
list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) {
vha = tgt->vha;
ha = vha->hw;
host = vha->host;
if (!host)
continue;
if (!(host->hostt->supported_mode & MODE_TARGET))
continue;
spin_lock_irqsave(&ha->hardware_lock, flags);
if ((!npiv_wwpn || !npiv_wwnn) && host->active_mode & MODE_TARGET) {
pr_debug("MODE_TARGET already active on qla2xxx(%d)\n",
host->host_no);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
continue;
}
if (tgt->tgt_stop) {
pr_debug("MODE_TARGET in shutdown on qla2xxx(%d)\n",
host->host_no);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
continue;
}
spin_unlock_irqrestore(&ha->hardware_lock, flags);
if (!scsi_host_get(host)) {
ql_dbg(ql_dbg_tgt, vha, 0xe068,
"Unable to scsi_host_get() for"
" qla2xxx scsi_host\n");
continue;
}
qlt_lport_dump(vha, phys_wwpn, b);
if (memcmp(vha->port_name, b, WWN_SIZE)) {
scsi_host_put(host);
continue;
}
rc = (*callback)(vha, target_lport_ptr, npiv_wwpn, npiv_wwnn);
if (rc != 0)
scsi_host_put(host);
mutex_unlock(&qla_tgt_mutex);
return rc;
}
mutex_unlock(&qla_tgt_mutex);
return -ENODEV;
}
EXPORT_SYMBOL(qlt_lport_register);
/**
* qla_tgt_lport_deregister - Degister lport
*
* @vha: Registered scsi_qla_host pointer
*/
void qlt_lport_deregister(struct scsi_qla_host *vha)
{
struct qla_hw_data *ha = vha->hw;
struct Scsi_Host *sh = vha->host;
/*
* Clear the target_lport_ptr qla_target_template pointer in qla_hw_data
*/
vha->vha_tgt.target_lport_ptr = NULL;
ha->tgt.tgt_ops = NULL;
/*
* Release the Scsi_Host reference for the underlying qla2xxx host
*/
scsi_host_put(sh);
}
EXPORT_SYMBOL(qlt_lport_deregister);
/* Must be called under HW lock */
static void qlt_set_mode(struct scsi_qla_host *vha)
{
switch (ql2x_ini_mode) {
case QLA2XXX_INI_MODE_DISABLED:
case QLA2XXX_INI_MODE_EXCLUSIVE:
vha->host->active_mode = MODE_TARGET;
break;
case QLA2XXX_INI_MODE_ENABLED:
vha->host->active_mode = MODE_UNKNOWN;
break;
case QLA2XXX_INI_MODE_DUAL:
vha->host->active_mode = MODE_DUAL;
break;
default:
break;
}
}
/* Must be called under HW lock */
static void qlt_clear_mode(struct scsi_qla_host *vha)
{
switch (ql2x_ini_mode) {
case QLA2XXX_INI_MODE_DISABLED:
vha->host->active_mode = MODE_UNKNOWN;
break;
case QLA2XXX_INI_MODE_EXCLUSIVE:
vha->host->active_mode = MODE_INITIATOR;
break;
case QLA2XXX_INI_MODE_ENABLED:
case QLA2XXX_INI_MODE_DUAL:
vha->host->active_mode = MODE_INITIATOR;
break;
default:
break;
}
}
/*
* qla_tgt_enable_vha - NO LOCK HELD
*
* host_reset, bring up w/ Target Mode Enabled
*/
void
qlt_enable_vha(struct scsi_qla_host *vha)
{
struct qla_hw_data *ha = vha->hw;
struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
unsigned long flags;
scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
int rspq_ent = QLA83XX_RSPQ_MSIX_ENTRY_NUMBER;
if (!tgt) {
ql_dbg(ql_dbg_tgt, vha, 0xe069,
"Unable to locate qla_tgt pointer from"
" struct qla_hw_data\n");
dump_stack();
return;
}
spin_lock_irqsave(&ha->hardware_lock, flags);
tgt->tgt_stopped = 0;
qlt_set_mode(vha);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
if (vha->vp_idx) {
qla24xx_disable_vp(vha);
qla24xx_enable_vp(vha);
} else {
if (ha->msix_entries) {
ql_dbg(ql_dbg_tgt, vha, 0xffff,
"%s: host%ld : vector %d cpu %d\n",
__func__, vha->host_no,
ha->msix_entries[rspq_ent].vector,
ha->msix_entries[rspq_ent].cpuid);
ha->tgt.rspq_vector_cpuid =
ha->msix_entries[rspq_ent].cpuid;
}
set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags);
qla2xxx_wake_dpc(base_vha);
qla2x00_wait_for_hba_online(base_vha);
}
}
EXPORT_SYMBOL(qlt_enable_vha);
/*
* qla_tgt_disable_vha - NO LOCK HELD
*
* Disable Target Mode and reset the adapter
*/
static void qlt_disable_vha(struct scsi_qla_host *vha)
{
struct qla_hw_data *ha = vha->hw;
struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
unsigned long flags;
if (!tgt) {
ql_dbg(ql_dbg_tgt, vha, 0xe06a,
"Unable to locate qla_tgt pointer from"
" struct qla_hw_data\n");
dump_stack();
return;
}
spin_lock_irqsave(&ha->hardware_lock, flags);
qlt_clear_mode(vha);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
qla2xxx_wake_dpc(vha);
qla2x00_wait_for_hba_online(vha);
}
/*
* Called from qla_init.c:qla24xx_vport_create() contex to setup
* the target mode specific struct scsi_qla_host and struct qla_hw_data
* members.
*/
void
qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha)
{
vha->vha_tgt.qla_tgt = NULL;
mutex_init(&vha->vha_tgt.tgt_mutex);
mutex_init(&vha->vha_tgt.tgt_host_action_mutex);
qlt_clear_mode(vha);
/*
* NOTE: Currently the value is kept the same for <24xx and
* >=24xx ISPs. If it is necessary to change it,
* the check should be added for specific ISPs,
* assigning the value appropriately.
*/
ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX;
qlt_add_target(ha, vha);
}
void
qlt_rff_id(struct scsi_qla_host *vha, struct ct_sns_req *ct_req)
{
/*
* FC-4 Feature bit 0 indicates target functionality to the name server.
*/
if (qla_tgt_mode_enabled(vha)) {
ct_req->req.rff_id.fc4_feature = BIT_0;
} else if (qla_ini_mode_enabled(vha)) {
ct_req->req.rff_id.fc4_feature = BIT_1;
} else if (qla_dual_mode_enabled(vha))
ct_req->req.rff_id.fc4_feature = BIT_0 | BIT_1;
}
/*
* qlt_init_atio_q_entries() - Initializes ATIO queue entries.
* @ha: HA context
*
* Beginning of ATIO ring has initialization control block already built
* by nvram config routine.
*
* Returns 0 on success.
*/
void
qlt_init_atio_q_entries(struct scsi_qla_host *vha)
{
struct qla_hw_data *ha = vha->hw;
uint16_t cnt;
struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring;
if (qla_ini_mode_enabled(vha))
return;
for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) {
pkt->u.raw.signature = ATIO_PROCESSED;
pkt++;
}
}
/*
* qlt_24xx_process_atio_queue() - Process ATIO queue entries.
* @ha: SCSI driver HA context
*/
void
qlt_24xx_process_atio_queue(struct scsi_qla_host *vha, uint8_t ha_locked)
{
struct qla_hw_data *ha = vha->hw;
struct atio_from_isp *pkt;
int cnt, i;
if (!ha->flags.fw_started)
return;
while ((ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) ||
fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr)) {
pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
cnt = pkt->u.raw.entry_count;
if (unlikely(fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr))) {
/*
* This packet is corrupted. The header + payload
* can not be trusted. There is no point in passing
* it further up.
*/
ql_log(ql_log_warn, vha, 0xffff,
"corrupted fcp frame SID[%3phN] OXID[%04x] EXCG[%x] %64phN\n",
pkt->u.isp24.fcp_hdr.s_id,
be16_to_cpu(pkt->u.isp24.fcp_hdr.ox_id),
le32_to_cpu(pkt->u.isp24.exchange_addr), pkt);
adjust_corrupted_atio(pkt);
qlt_send_term_exchange(vha, NULL, pkt, ha_locked, 0);
} else {
qlt_24xx_atio_pkt_all_vps(vha,
(struct atio_from_isp *)pkt, ha_locked);
}
for (i = 0; i < cnt; i++) {
ha->tgt.atio_ring_index++;
if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) {
ha->tgt.atio_ring_index = 0;
ha->tgt.atio_ring_ptr = ha->tgt.atio_ring;
} else
ha->tgt.atio_ring_ptr++;
pkt->u.raw.signature = ATIO_PROCESSED;
pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
}
wmb();
}
/* Adjust ring index */
WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index);
RD_REG_DWORD_RELAXED(ISP_ATIO_Q_OUT(vha));
}
void
qlt_24xx_config_rings(struct scsi_qla_host *vha)
{
struct qla_hw_data *ha = vha->hw;
if (!QLA_TGT_MODE_ENABLED())
return;
WRT_REG_DWORD(ISP_ATIO_Q_IN(vha), 0);
WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), 0);
RD_REG_DWORD(ISP_ATIO_Q_OUT(vha));
if (IS_ATIO_MSIX_CAPABLE(ha)) {
struct qla_msix_entry *msix = &ha->msix_entries[2];
struct init_cb_24xx *icb = (struct init_cb_24xx *)ha->init_cb;
icb->msix_atio = cpu_to_le16(msix->entry);
ql_dbg(ql_dbg_init, vha, 0xf072,
"Registering ICB vector 0x%x for atio que.\n",
msix->entry);
}
}
void
qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv)
{
struct qla_hw_data *ha = vha->hw;
u32 tmp;
u16 t;
if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) {
if (!ha->tgt.saved_set) {
/* We save only once */
ha->tgt.saved_exchange_count = nv->exchange_count;
ha->tgt.saved_firmware_options_1 =
nv->firmware_options_1;
ha->tgt.saved_firmware_options_2 =
nv->firmware_options_2;
ha->tgt.saved_firmware_options_3 =
nv->firmware_options_3;
ha->tgt.saved_set = 1;
}
if (qla_tgt_mode_enabled(vha)) {
nv->exchange_count = cpu_to_le16(0xFFFF);
} else { /* dual */
if (ql_dm_tgt_ex_pct > 100) {
ql_dm_tgt_ex_pct = 50;
} else if (ql_dm_tgt_ex_pct == 100) {
/* leave some for FW */
ql_dm_tgt_ex_pct = 95;
}
tmp = ha->orig_fw_xcb_count * ql_dm_tgt_ex_pct;
tmp = tmp/100;
if (tmp > 0xffff)
tmp = 0xffff;
t = tmp & 0xffff;
nv->exchange_count = cpu_to_le16(t);
}
/* Enable target mode */
nv->firmware_options_1 |= cpu_to_le32(BIT_4);
/* Disable ini mode, if requested */
if (qla_tgt_mode_enabled(vha))
nv->firmware_options_1 |= cpu_to_le32(BIT_5);
/* Disable Full Login after LIP */
nv->firmware_options_1 &= cpu_to_le32(~BIT_13);
/* Enable initial LIP */
nv->firmware_options_1 &= cpu_to_le32(~BIT_9);
if (ql2xtgt_tape_enable)
/* Enable FC Tape support */
nv->firmware_options_2 |= cpu_to_le32(BIT_12);
else
/* Disable FC Tape support */
nv->firmware_options_2 &= cpu_to_le32(~BIT_12);
/* Disable Full Login after LIP */
nv->host_p &= cpu_to_le32(~BIT_10);
/*
* clear BIT 15 explicitly as we have seen at least
* a couple of instances where this was set and this
* was causing the firmware to not be initialized.
*/
nv->firmware_options_1 &= cpu_to_le32(~BIT_15);
/* Enable target PRLI control */
nv->firmware_options_2 |= cpu_to_le32(BIT_14);
} else {
if (ha->tgt.saved_set) {
nv->exchange_count = ha->tgt.saved_exchange_count;
nv->firmware_options_1 =
ha->tgt.saved_firmware_options_1;
nv->firmware_options_2 =
ha->tgt.saved_firmware_options_2;
nv->firmware_options_3 =
ha->tgt.saved_firmware_options_3;
}
return;
}
if (ha->tgt.enable_class_2) {
if (vha->flags.init_done)
fc_host_supported_classes(vha->host) =
FC_COS_CLASS2 | FC_COS_CLASS3;
nv->firmware_options_2 |= cpu_to_le32(BIT_8);
} else {
if (vha->flags.init_done)
fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
nv->firmware_options_2 &= ~cpu_to_le32(BIT_8);
}
}
void
qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha,
struct init_cb_24xx *icb)
{
struct qla_hw_data *ha = vha->hw;
if (!QLA_TGT_MODE_ENABLED())
return;
if (ha->tgt.node_name_set) {
memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
icb->firmware_options_1 |= cpu_to_le32(BIT_14);
}
/* disable ZIO at start time. */
if (!vha->flags.init_done) {
uint32_t tmp;
tmp = le32_to_cpu(icb->firmware_options_2);
tmp &= ~(BIT_3 | BIT_2 | BIT_1 | BIT_0);
icb->firmware_options_2 = cpu_to_le32(tmp);
}
}
void
qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv)
{
struct qla_hw_data *ha = vha->hw;
u32 tmp;
u16 t;
if (!QLA_TGT_MODE_ENABLED())
return;
if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) {
if (!ha->tgt.saved_set) {
/* We save only once */
ha->tgt.saved_exchange_count = nv->exchange_count;
ha->tgt.saved_firmware_options_1 =
nv->firmware_options_1;
ha->tgt.saved_firmware_options_2 =
nv->firmware_options_2;
ha->tgt.saved_firmware_options_3 =
nv->firmware_options_3;
ha->tgt.saved_set = 1;
}
if (qla_tgt_mode_enabled(vha)) {
nv->exchange_count = cpu_to_le16(0xFFFF);
} else { /* dual */
if (ql_dm_tgt_ex_pct > 100) {
ql_dm_tgt_ex_pct = 50;
} else if (ql_dm_tgt_ex_pct == 100) {
/* leave some for FW */
ql_dm_tgt_ex_pct = 95;
}
tmp = ha->orig_fw_xcb_count * ql_dm_tgt_ex_pct;
tmp = tmp/100;
if (tmp > 0xffff)
tmp = 0xffff;
t = tmp & 0xffff;
nv->exchange_count = cpu_to_le16(t);
}
/* Enable target mode */
nv->firmware_options_1 |= cpu_to_le32(BIT_4);
/* Disable ini mode, if requested */
if (qla_tgt_mode_enabled(vha))
nv->firmware_options_1 |= cpu_to_le32(BIT_5);
/* Disable Full Login after LIP */
nv->firmware_options_1 &= cpu_to_le32(~BIT_13);
/* Enable initial LIP */
nv->firmware_options_1 &= cpu_to_le32(~BIT_9);
/*
* clear BIT 15 explicitly as we have seen at
* least a couple of instances where this was set
* and this was causing the firmware to not be
* initialized.
*/
nv->firmware_options_1 &= cpu_to_le32(~BIT_15);
if (ql2xtgt_tape_enable)
/* Enable FC tape support */
nv->firmware_options_2 |= cpu_to_le32(BIT_12);
else
/* Disable FC tape support */
nv->firmware_options_2 &= cpu_to_le32(~BIT_12);
/* Disable Full Login after LIP */
nv->host_p &= cpu_to_le32(~BIT_10);
/* Enable target PRLI control */
nv->firmware_options_2 |= cpu_to_le32(BIT_14);
} else {
if (ha->tgt.saved_set) {
nv->exchange_count = ha->tgt.saved_exchange_count;
nv->firmware_options_1 =
ha->tgt.saved_firmware_options_1;
nv->firmware_options_2 =
ha->tgt.saved_firmware_options_2;
nv->firmware_options_3 =
ha->tgt.saved_firmware_options_3;
}
return;
}
if (ha->tgt.enable_class_2) {
if (vha->flags.init_done)
fc_host_supported_classes(vha->host) =
FC_COS_CLASS2 | FC_COS_CLASS3;
nv->firmware_options_2 |= cpu_to_le32(BIT_8);
} else {
if (vha->flags.init_done)
fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
nv->firmware_options_2 &= ~cpu_to_le32(BIT_8);
}
}
void
qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha,
struct init_cb_81xx *icb)
{
struct qla_hw_data *ha = vha->hw;
if (!QLA_TGT_MODE_ENABLED())
return;
if (ha->tgt.node_name_set) {
memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
icb->firmware_options_1 |= cpu_to_le32(BIT_14);
}
/* disable ZIO at start time. */
if (!vha->flags.init_done) {
uint32_t tmp;
tmp = le32_to_cpu(icb->firmware_options_2);
tmp &= ~(BIT_3 | BIT_2 | BIT_1 | BIT_0);
icb->firmware_options_2 = cpu_to_le32(tmp);
}
}
void
qlt_83xx_iospace_config(struct qla_hw_data *ha)
{
if (!QLA_TGT_MODE_ENABLED())
return;
ha->msix_count += 1; /* For ATIO Q */
}
int
qlt_24xx_process_response_error(struct scsi_qla_host *vha,
struct sts_entry_24xx *pkt)
{
switch (pkt->entry_type) {
case ABTS_RECV_24XX:
case ABTS_RESP_24XX:
case CTIO_TYPE7:
case NOTIFY_ACK_TYPE:
case CTIO_CRC2:
return 1;
default:
return 0;
}
}
void
qlt_modify_vp_config(struct scsi_qla_host *vha,
struct vp_config_entry_24xx *vpmod)
{
/* enable target mode. Bit5 = 1 => disable */
if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha))
vpmod->options_idx1 &= ~BIT_5;
/* Disable ini mode, if requested. bit4 = 1 => disable */
if (qla_tgt_mode_enabled(vha))
vpmod->options_idx1 &= ~BIT_4;
}
void
qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha)
{
int rc;
if (!QLA_TGT_MODE_ENABLED())
return;
if (ha->mqenable || IS_QLA83XX(ha) || IS_QLA27XX(ha)) {
ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in;
ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out;
} else {
ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in;
ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out;
}
mutex_init(&base_vha->vha_tgt.tgt_mutex);
mutex_init(&base_vha->vha_tgt.tgt_host_action_mutex);
INIT_LIST_HEAD(&base_vha->unknown_atio_list);
INIT_DELAYED_WORK(&base_vha->unknown_atio_work,
qlt_unknown_atio_work_fn);
qlt_clear_mode(base_vha);
rc = btree_init32(&ha->tgt.host_map);
if (rc)
ql_log(ql_log_info, base_vha, 0xffff,
"Unable to initialize ha->host_map btree\n");
qlt_update_vp_map(base_vha, SET_VP_IDX);
}
irqreturn_t
qla83xx_msix_atio_q(int irq, void *dev_id)
{
struct rsp_que *rsp;
scsi_qla_host_t *vha;
struct qla_hw_data *ha;
unsigned long flags;
rsp = (struct rsp_que *) dev_id;
ha = rsp->hw;
vha = pci_get_drvdata(ha->pdev);
spin_lock_irqsave(&ha->tgt.atio_lock, flags);
qlt_24xx_process_atio_queue(vha, 0);
spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
return IRQ_HANDLED;
}
static void
qlt_handle_abts_recv_work(struct work_struct *work)
{
struct qla_tgt_sess_op *op = container_of(work,
struct qla_tgt_sess_op, work);
scsi_qla_host_t *vha = op->vha;
struct qla_hw_data *ha = vha->hw;
unsigned long flags;
if (qla2x00_reset_active(vha) || (op->chip_reset != ha->chip_reset))
return;
spin_lock_irqsave(&ha->tgt.atio_lock, flags);
qlt_24xx_process_atio_queue(vha, 0);
spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
spin_lock_irqsave(&ha->hardware_lock, flags);
qlt_response_pkt_all_vps(vha, (response_t *)&op->atio);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
kfree(op);
}
void
qlt_handle_abts_recv(struct scsi_qla_host *vha, response_t *pkt)
{
struct qla_tgt_sess_op *op;
op = kzalloc(sizeof(*op), GFP_ATOMIC);
if (!op) {
/* do not reach for ATIO queue here. This is best effort err
* recovery at this point.
*/
qlt_response_pkt_all_vps(vha, pkt);
return;
}
memcpy(&op->atio, pkt, sizeof(*pkt));
op->vha = vha;
op->chip_reset = vha->hw->chip_reset;
INIT_WORK(&op->work, qlt_handle_abts_recv_work);
queue_work(qla_tgt_wq, &op->work);
return;
}
int
qlt_mem_alloc(struct qla_hw_data *ha)
{
if (!QLA_TGT_MODE_ENABLED())
return 0;
ha->tgt.tgt_vp_map = kzalloc(sizeof(struct qla_tgt_vp_map) *
MAX_MULTI_ID_FABRIC, GFP_KERNEL);
if (!ha->tgt.tgt_vp_map)
return -ENOMEM;
ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev,
(ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp),
&ha->tgt.atio_dma, GFP_KERNEL);
if (!ha->tgt.atio_ring) {
kfree(ha->tgt.tgt_vp_map);
return -ENOMEM;
}
return 0;
}
void
qlt_mem_free(struct qla_hw_data *ha)
{
if (!QLA_TGT_MODE_ENABLED())
return;
if (ha->tgt.atio_ring) {
dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) *
sizeof(struct atio_from_isp), ha->tgt.atio_ring,
ha->tgt.atio_dma);
}
kfree(ha->tgt.tgt_vp_map);
}
/* vport_slock to be held by the caller */
void
qlt_update_vp_map(struct scsi_qla_host *vha, int cmd)
{
void *slot;
u32 key;
int rc;
if (!QLA_TGT_MODE_ENABLED())
return;
key = vha->d_id.b24;
switch (cmd) {
case SET_VP_IDX:
vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = vha;
break;
case SET_AL_PA:
slot = btree_lookup32(&vha->hw->tgt.host_map, key);
if (!slot) {
ql_dbg(ql_dbg_tgt_mgt, vha, 0xffff,
"Save vha in host_map %p %06x\n", vha, key);
rc = btree_insert32(&vha->hw->tgt.host_map,
key, vha, GFP_ATOMIC);
if (rc)
ql_log(ql_log_info, vha, 0xffff,
"Unable to insert s_id into host_map: %06x\n",
key);
return;
}
ql_dbg(ql_dbg_tgt_mgt, vha, 0xffff,
"replace existing vha in host_map %p %06x\n", vha, key);
btree_update32(&vha->hw->tgt.host_map, key, vha);
break;
case RESET_VP_IDX:
vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = NULL;
break;
case RESET_AL_PA:
ql_dbg(ql_dbg_tgt_mgt, vha, 0xffff,
"clear vha in host_map %p %06x\n", vha, key);
slot = btree_lookup32(&vha->hw->tgt.host_map, key);
if (slot)
btree_remove32(&vha->hw->tgt.host_map, key);
vha->d_id.b24 = 0;
break;
}
}
void qlt_update_host_map(struct scsi_qla_host *vha, port_id_t id)
{
unsigned long flags;
struct qla_hw_data *ha = vha->hw;
if (!vha->d_id.b24) {
spin_lock_irqsave(&ha->vport_slock, flags);
vha->d_id = id;
qlt_update_vp_map(vha, SET_AL_PA);
spin_unlock_irqrestore(&ha->vport_slock, flags);
} else if (vha->d_id.b24 != id.b24) {
spin_lock_irqsave(&ha->vport_slock, flags);
qlt_update_vp_map(vha, RESET_AL_PA);
vha->d_id = id;
qlt_update_vp_map(vha, SET_AL_PA);
spin_unlock_irqrestore(&ha->vport_slock, flags);
}
}
static int __init qlt_parse_ini_mode(void)
{
if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0)
ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0)
ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED;
else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0)
ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED;
else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DUAL) == 0)
ql2x_ini_mode = QLA2XXX_INI_MODE_DUAL;
else
return false;
return true;
}
int __init qlt_init(void)
{
int ret;
if (!qlt_parse_ini_mode()) {
ql_log(ql_log_fatal, NULL, 0xe06b,
"qlt_parse_ini_mode() failed\n");
return -EINVAL;
}
if (!QLA_TGT_MODE_ENABLED())
return 0;
qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep",
sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct
qla_tgt_mgmt_cmd), 0, NULL);
if (!qla_tgt_mgmt_cmd_cachep) {
ql_log(ql_log_fatal, NULL, 0xe06d,
"kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n");
return -ENOMEM;
}
qla_tgt_plogi_cachep = kmem_cache_create("qla_tgt_plogi_cachep",
sizeof(struct qlt_plogi_ack_t), __alignof__(struct qlt_plogi_ack_t),
0, NULL);
if (!qla_tgt_plogi_cachep) {
ql_log(ql_log_fatal, NULL, 0xe06d,
"kmem_cache_create for qla_tgt_plogi_cachep failed\n");
ret = -ENOMEM;
goto out_mgmt_cmd_cachep;
}
qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab,
mempool_free_slab, qla_tgt_mgmt_cmd_cachep);
if (!qla_tgt_mgmt_cmd_mempool) {
ql_log(ql_log_fatal, NULL, 0xe06e,
"mempool_create for qla_tgt_mgmt_cmd_mempool failed\n");
ret = -ENOMEM;
goto out_plogi_cachep;
}
qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0);
if (!qla_tgt_wq) {
ql_log(ql_log_fatal, NULL, 0xe06f,
"alloc_workqueue for qla_tgt_wq failed\n");
ret = -ENOMEM;
goto out_cmd_mempool;
}
/*
* Return 1 to signal that initiator-mode is being disabled
*/
return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0;
out_cmd_mempool:
mempool_destroy(qla_tgt_mgmt_cmd_mempool);
out_plogi_cachep:
kmem_cache_destroy(qla_tgt_plogi_cachep);
out_mgmt_cmd_cachep:
kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
return ret;
}
void qlt_exit(void)
{
if (!QLA_TGT_MODE_ENABLED())
return;
destroy_workqueue(qla_tgt_wq);
mempool_destroy(qla_tgt_mgmt_cmd_mempool);
kmem_cache_destroy(qla_tgt_plogi_cachep);
kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
}
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