q3k/linux
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity
linux/drivers/scsi/qla4xxx/ql4_os.c
Mike Christie 590134fa78 [SCSI] qla4xxx: export address/port of connection (fix udev disk names) 
Udev uses the connection's persistent address/port in the
/dev/disk/by-path name. qla4xxx is not exporting this value
so its iscsi disk names have been lacking the iscsi info.
In the old driver we did not have this information but
we do now and can fix this by just setting the flags to tell
libiscsi/scsi_transport_iscsi to export this info in sysfs.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-10-20 10:28:16 -05:00

4343 lines
119 KiB
C
Raw Blame History

/*
* QLogic iSCSI HBA Driver
* Copyright (c) 2003-2010 QLogic Corporation
*
* See LICENSE.qla4xxx for copyright and licensing details.
*/
#include <linux/moduleparam.h>
#include <linux/slab.h>
#include <linux/blkdev.h>
#include <linux/iscsi_boot_sysfs.h>
#include <scsi/scsi_tcq.h>
#include <scsi/scsicam.h>
#include "ql4_def.h"
#include "ql4_version.h"
#include "ql4_glbl.h"
#include "ql4_dbg.h"
#include "ql4_inline.h"
/*
* Driver version
*/
static char qla4xxx_version_str[40];
/*
* SRB allocation cache
*/
static struct kmem_cache *srb_cachep;
/*
* Module parameter information and variables
*/
int ql4xdontresethba = 0;
module_param(ql4xdontresethba, int, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(ql4xdontresethba,
"Don't reset the HBA for driver recovery \n"
" 0 - It will reset HBA (Default)\n"
" 1 - It will NOT reset HBA");
int ql4xextended_error_logging = 0; /* 0 = off, 1 = log errors */
module_param(ql4xextended_error_logging, int, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(ql4xextended_error_logging,
"Option to enable extended error logging, "
"Default is 0 - no logging, 1 - debug logging");
int ql4xenablemsix = 1;
module_param(ql4xenablemsix, int, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(ql4xenablemsix,
"Set to enable MSI or MSI-X interrupt mechanism.\n"
" 0 = enable INTx interrupt mechanism.\n"
" 1 = enable MSI-X interrupt mechanism (Default).\n"
" 2 = enable MSI interrupt mechanism.");
#define QL4_DEF_QDEPTH 32
static int ql4xmaxqdepth = QL4_DEF_QDEPTH;
module_param(ql4xmaxqdepth, int, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(ql4xmaxqdepth,
"Maximum queue depth to report for target devices.\n"
" Default: 32.");
static int ql4xsess_recovery_tmo = QL4_SESS_RECOVERY_TMO;
module_param(ql4xsess_recovery_tmo, int, S_IRUGO);
MODULE_PARM_DESC(ql4xsess_recovery_tmo,
"Target Session Recovery Timeout.\n"
" Default: 30 sec.");
static int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha);
/*
* SCSI host template entry points
*/
static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha);
/*
* iSCSI template entry points
*/
static int qla4xxx_conn_get_param(struct iscsi_cls_conn *conn,
enum iscsi_param param, char *buf);
static int qla4xxx_host_get_param(struct Scsi_Host *shost,
enum iscsi_host_param param, char *buf);
static int qla4xxx_iface_set_param(struct Scsi_Host *shost, void *data,
uint32_t len);
static int qla4xxx_get_iface_param(struct iscsi_iface *iface,
enum iscsi_param_type param_type,
int param, char *buf);
static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc);
static struct iscsi_endpoint *qla4xxx_ep_connect(struct Scsi_Host *shost,
struct sockaddr *dst_addr,
int non_blocking);
static int qla4xxx_ep_poll(struct iscsi_endpoint *ep, int timeout_ms);
static void qla4xxx_ep_disconnect(struct iscsi_endpoint *ep);
static int qla4xxx_get_ep_param(struct iscsi_endpoint *ep,
enum iscsi_param param, char *buf);
static int qla4xxx_conn_start(struct iscsi_cls_conn *conn);
static struct iscsi_cls_conn *
qla4xxx_conn_create(struct iscsi_cls_session *cls_sess, uint32_t conn_idx);
static int qla4xxx_conn_bind(struct iscsi_cls_session *cls_session,
struct iscsi_cls_conn *cls_conn,
uint64_t transport_fd, int is_leading);
static void qla4xxx_conn_destroy(struct iscsi_cls_conn *conn);
static struct iscsi_cls_session *
qla4xxx_session_create(struct iscsi_endpoint *ep, uint16_t cmds_max,
uint16_t qdepth, uint32_t initial_cmdsn);
static void qla4xxx_session_destroy(struct iscsi_cls_session *sess);
static void qla4xxx_task_work(struct work_struct *wdata);
static int qla4xxx_alloc_pdu(struct iscsi_task *, uint8_t);
static int qla4xxx_task_xmit(struct iscsi_task *);
static void qla4xxx_task_cleanup(struct iscsi_task *);
static void qla4xxx_fail_session(struct iscsi_cls_session *cls_session);
static void qla4xxx_conn_get_stats(struct iscsi_cls_conn *cls_conn,
struct iscsi_stats *stats);
/*
* SCSI host template entry points
*/
static int qla4xxx_queuecommand(struct Scsi_Host *h, struct scsi_cmnd *cmd);
static int qla4xxx_eh_abort(struct scsi_cmnd *cmd);
static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd);
static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd);
static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd);
static int qla4xxx_slave_alloc(struct scsi_device *device);
static int qla4xxx_slave_configure(struct scsi_device *device);
static void qla4xxx_slave_destroy(struct scsi_device *sdev);
static mode_t ql4_attr_is_visible(int param_type, int param);
static int qla4xxx_host_reset(struct Scsi_Host *shost, int reset_type);
static struct qla4_8xxx_legacy_intr_set legacy_intr[] =
QLA82XX_LEGACY_INTR_CONFIG;
static struct scsi_host_template qla4xxx_driver_template = {
.module = THIS_MODULE,
.name = DRIVER_NAME,
.proc_name = DRIVER_NAME,
.queuecommand = qla4xxx_queuecommand,
.eh_abort_handler = qla4xxx_eh_abort,
.eh_device_reset_handler = qla4xxx_eh_device_reset,
.eh_target_reset_handler = qla4xxx_eh_target_reset,
.eh_host_reset_handler = qla4xxx_eh_host_reset,
.eh_timed_out = qla4xxx_eh_cmd_timed_out,
.slave_configure = qla4xxx_slave_configure,
.slave_alloc = qla4xxx_slave_alloc,
.slave_destroy = qla4xxx_slave_destroy,
.this_id = -1,
.cmd_per_lun = 3,
.use_clustering = ENABLE_CLUSTERING,
.sg_tablesize = SG_ALL,
.max_sectors = 0xFFFF,
.shost_attrs = qla4xxx_host_attrs,
.host_reset = qla4xxx_host_reset,
.vendor_id = SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_QLOGIC,
};
static struct iscsi_transport qla4xxx_iscsi_transport = {
.owner = THIS_MODULE,
.name = DRIVER_NAME,
.caps = CAP_TEXT_NEGO |
CAP_DATA_PATH_OFFLOAD | CAP_HDRDGST |
CAP_DATADGST | CAP_LOGIN_OFFLOAD |
CAP_MULTI_R2T,
.attr_is_visible = ql4_attr_is_visible,
.create_session = qla4xxx_session_create,
.destroy_session = qla4xxx_session_destroy,
.start_conn = qla4xxx_conn_start,
.create_conn = qla4xxx_conn_create,
.bind_conn = qla4xxx_conn_bind,
.stop_conn = iscsi_conn_stop,
.destroy_conn = qla4xxx_conn_destroy,
.set_param = iscsi_set_param,
.get_conn_param = qla4xxx_conn_get_param,
.get_session_param = iscsi_session_get_param,
.get_ep_param = qla4xxx_get_ep_param,
.ep_connect = qla4xxx_ep_connect,
.ep_poll = qla4xxx_ep_poll,
.ep_disconnect = qla4xxx_ep_disconnect,
.get_stats = qla4xxx_conn_get_stats,
.send_pdu = iscsi_conn_send_pdu,
.xmit_task = qla4xxx_task_xmit,
.cleanup_task = qla4xxx_task_cleanup,
.alloc_pdu = qla4xxx_alloc_pdu,
.get_host_param = qla4xxx_host_get_param,
.set_iface_param = qla4xxx_iface_set_param,
.get_iface_param = qla4xxx_get_iface_param,
.bsg_request = qla4xxx_bsg_request,
};
static struct scsi_transport_template *qla4xxx_scsi_transport;
static mode_t ql4_attr_is_visible(int param_type, int param)
{
switch (param_type) {
case ISCSI_HOST_PARAM:
switch (param) {
case ISCSI_HOST_PARAM_HWADDRESS:
case ISCSI_HOST_PARAM_IPADDRESS:
case ISCSI_HOST_PARAM_INITIATOR_NAME:
return S_IRUGO;
default:
return 0;
}
case ISCSI_PARAM:
switch (param) {
case ISCSI_PARAM_PERSISTENT_ADDRESS:
case ISCSI_PARAM_PERSISTENT_PORT:
case ISCSI_PARAM_CONN_ADDRESS:
case ISCSI_PARAM_CONN_PORT:
case ISCSI_PARAM_TARGET_NAME:
case ISCSI_PARAM_TPGT:
case ISCSI_PARAM_TARGET_ALIAS:
case ISCSI_PARAM_MAX_BURST:
case ISCSI_PARAM_MAX_R2T:
case ISCSI_PARAM_FIRST_BURST:
case ISCSI_PARAM_MAX_RECV_DLENGTH:
case ISCSI_PARAM_MAX_XMIT_DLENGTH:
case ISCSI_PARAM_IFACE_NAME:
return S_IRUGO;
default:
return 0;
}
case ISCSI_NET_PARAM:
switch (param) {
case ISCSI_NET_PARAM_IPV4_ADDR:
case ISCSI_NET_PARAM_IPV4_SUBNET:
case ISCSI_NET_PARAM_IPV4_GW:
case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
case ISCSI_NET_PARAM_IFACE_ENABLE:
case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
case ISCSI_NET_PARAM_IPV6_ADDR:
case ISCSI_NET_PARAM_IPV6_ROUTER:
case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
case ISCSI_NET_PARAM_VLAN_ID:
case ISCSI_NET_PARAM_VLAN_PRIORITY:
case ISCSI_NET_PARAM_VLAN_ENABLED:
case ISCSI_NET_PARAM_MTU:
case ISCSI_NET_PARAM_PORT:
return S_IRUGO;
default:
return 0;
}
}
return 0;
}
static int qla4xxx_get_iface_param(struct iscsi_iface *iface,
enum iscsi_param_type param_type,
int param, char *buf)
{
struct Scsi_Host *shost = iscsi_iface_to_shost(iface);
struct scsi_qla_host *ha = to_qla_host(shost);
int len = -ENOSYS;
if (param_type != ISCSI_NET_PARAM)
return -ENOSYS;
switch (param) {
case ISCSI_NET_PARAM_IPV4_ADDR:
len = sprintf(buf, "%pI4\n", &ha->ip_config.ip_address);
break;
case ISCSI_NET_PARAM_IPV4_SUBNET:
len = sprintf(buf, "%pI4\n", &ha->ip_config.subnet_mask);
break;
case ISCSI_NET_PARAM_IPV4_GW:
len = sprintf(buf, "%pI4\n", &ha->ip_config.gateway);
break;
case ISCSI_NET_PARAM_IFACE_ENABLE:
if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
len = sprintf(buf, "%s\n",
(ha->ip_config.ipv4_options &
IPOPT_IPV4_PROTOCOL_ENABLE) ?
"enabled" : "disabled");
else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
len = sprintf(buf, "%s\n",
(ha->ip_config.ipv6_options &
IPV6_OPT_IPV6_PROTOCOL_ENABLE) ?
"enabled" : "disabled");
break;
case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
len = sprintf(buf, "%s\n",
(ha->ip_config.tcp_options & TCPOPT_DHCP_ENABLE) ?
"dhcp" : "static");
break;
case ISCSI_NET_PARAM_IPV6_ADDR:
if (iface->iface_num == 0)
len = sprintf(buf, "%pI6\n", &ha->ip_config.ipv6_addr0);
if (iface->iface_num == 1)
len = sprintf(buf, "%pI6\n", &ha->ip_config.ipv6_addr1);
break;
case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
len = sprintf(buf, "%pI6\n",
&ha->ip_config.ipv6_link_local_addr);
break;
case ISCSI_NET_PARAM_IPV6_ROUTER:
len = sprintf(buf, "%pI6\n",
&ha->ip_config.ipv6_default_router_addr);
break;
case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
len = sprintf(buf, "%s\n",
(ha->ip_config.ipv6_addl_options &
IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE) ?
"nd" : "static");
break;
case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
len = sprintf(buf, "%s\n",
(ha->ip_config.ipv6_addl_options &
IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR) ?
"auto" : "static");
break;
case ISCSI_NET_PARAM_VLAN_ID:
if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
len = sprintf(buf, "%d\n",
(ha->ip_config.ipv4_vlan_tag &
ISCSI_MAX_VLAN_ID));
else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
len = sprintf(buf, "%d\n",
(ha->ip_config.ipv6_vlan_tag &
ISCSI_MAX_VLAN_ID));
break;
case ISCSI_NET_PARAM_VLAN_PRIORITY:
if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
len = sprintf(buf, "%d\n",
((ha->ip_config.ipv4_vlan_tag >> 13) &
ISCSI_MAX_VLAN_PRIORITY));
else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
len = sprintf(buf, "%d\n",
((ha->ip_config.ipv6_vlan_tag >> 13) &
ISCSI_MAX_VLAN_PRIORITY));
break;
case ISCSI_NET_PARAM_VLAN_ENABLED:
if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
len = sprintf(buf, "%s\n",
(ha->ip_config.ipv4_options &
IPOPT_VLAN_TAGGING_ENABLE) ?
"enabled" : "disabled");
else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
len = sprintf(buf, "%s\n",
(ha->ip_config.ipv6_options &
IPV6_OPT_VLAN_TAGGING_ENABLE) ?
"enabled" : "disabled");
break;
case ISCSI_NET_PARAM_MTU:
len = sprintf(buf, "%d\n", ha->ip_config.eth_mtu_size);
break;
case ISCSI_NET_PARAM_PORT:
if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
len = sprintf(buf, "%d\n", ha->ip_config.ipv4_port);
else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
len = sprintf(buf, "%d\n", ha->ip_config.ipv6_port);
break;
default:
len = -ENOSYS;
}
return len;
}
static struct iscsi_endpoint *
qla4xxx_ep_connect(struct Scsi_Host *shost, struct sockaddr *dst_addr,
int non_blocking)
{
int ret;
struct iscsi_endpoint *ep;
struct qla_endpoint *qla_ep;
struct scsi_qla_host *ha;
struct sockaddr_in *addr;
struct sockaddr_in6 *addr6;
DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
if (!shost) {
ret = -ENXIO;
printk(KERN_ERR "%s: shost is NULL\n",
__func__);
return ERR_PTR(ret);
}
ha = iscsi_host_priv(shost);
ep = iscsi_create_endpoint(sizeof(struct qla_endpoint));
if (!ep) {
ret = -ENOMEM;
return ERR_PTR(ret);
}
qla_ep = ep->dd_data;
memset(qla_ep, 0, sizeof(struct qla_endpoint));
if (dst_addr->sa_family == AF_INET) {
memcpy(&qla_ep->dst_addr, dst_addr, sizeof(struct sockaddr_in));
addr = (struct sockaddr_in *)&qla_ep->dst_addr;
DEBUG2(ql4_printk(KERN_INFO, ha, "%s: %pI4\n", __func__,
(char *)&addr->sin_addr));
} else if (dst_addr->sa_family == AF_INET6) {
memcpy(&qla_ep->dst_addr, dst_addr,
sizeof(struct sockaddr_in6));
addr6 = (struct sockaddr_in6 *)&qla_ep->dst_addr;
DEBUG2(ql4_printk(KERN_INFO, ha, "%s: %pI6\n", __func__,
(char *)&addr6->sin6_addr));
}
qla_ep->host = shost;
return ep;
}
static int qla4xxx_ep_poll(struct iscsi_endpoint *ep, int timeout_ms)
{
struct qla_endpoint *qla_ep;
struct scsi_qla_host *ha;
int ret = 0;
DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
qla_ep = ep->dd_data;
ha = to_qla_host(qla_ep->host);
if (adapter_up(ha))
ret = 1;
return ret;
}
static void qla4xxx_ep_disconnect(struct iscsi_endpoint *ep)
{
DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
iscsi_destroy_endpoint(ep);
}
static int qla4xxx_get_ep_param(struct iscsi_endpoint *ep,
enum iscsi_param param,
char *buf)
{
struct qla_endpoint *qla_ep = ep->dd_data;
struct sockaddr *dst_addr;
DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
switch (param) {
case ISCSI_PARAM_CONN_PORT:
case ISCSI_PARAM_CONN_ADDRESS:
if (!qla_ep)
return -ENOTCONN;
dst_addr = (struct sockaddr *)&qla_ep->dst_addr;
if (!dst_addr)
return -ENOTCONN;
return iscsi_conn_get_addr_param((struct sockaddr_storage *)
&qla_ep->dst_addr, param, buf);
default:
return -ENOSYS;
}
}
static void qla4xxx_conn_get_stats(struct iscsi_cls_conn *cls_conn,
struct iscsi_stats *stats)
{
struct iscsi_session *sess;
struct iscsi_cls_session *cls_sess;
struct ddb_entry *ddb_entry;
struct scsi_qla_host *ha;
struct ql_iscsi_stats *ql_iscsi_stats;
int stats_size;
int ret;
dma_addr_t iscsi_stats_dma;
DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
cls_sess = iscsi_conn_to_session(cls_conn);
sess = cls_sess->dd_data;
ddb_entry = sess->dd_data;
ha = ddb_entry->ha;
stats_size = PAGE_ALIGN(sizeof(struct ql_iscsi_stats));
/* Allocate memory */
ql_iscsi_stats = dma_alloc_coherent(&ha->pdev->dev, stats_size,
&iscsi_stats_dma, GFP_KERNEL);
if (!ql_iscsi_stats) {
ql4_printk(KERN_ERR, ha,
"Unable to allocate memory for iscsi stats\n");
goto exit_get_stats;
}
ret = qla4xxx_get_mgmt_data(ha, ddb_entry->fw_ddb_index, stats_size,
iscsi_stats_dma);
if (ret != QLA_SUCCESS) {
ql4_printk(KERN_ERR, ha,
"Unable to retreive iscsi stats\n");
goto free_stats;
}
/* octets */
stats->txdata_octets = le64_to_cpu(ql_iscsi_stats->tx_data_octets);
stats->rxdata_octets = le64_to_cpu(ql_iscsi_stats->rx_data_octets);
/* xmit pdus */
stats->noptx_pdus = le32_to_cpu(ql_iscsi_stats->tx_nopout_pdus);
stats->scsicmd_pdus = le32_to_cpu(ql_iscsi_stats->tx_scsi_cmd_pdus);
stats->tmfcmd_pdus = le32_to_cpu(ql_iscsi_stats->tx_tmf_cmd_pdus);
stats->login_pdus = le32_to_cpu(ql_iscsi_stats->tx_login_cmd_pdus);
stats->text_pdus = le32_to_cpu(ql_iscsi_stats->tx_text_cmd_pdus);
stats->dataout_pdus = le32_to_cpu(ql_iscsi_stats->tx_scsi_write_pdus);
stats->logout_pdus = le32_to_cpu(ql_iscsi_stats->tx_logout_cmd_pdus);
stats->snack_pdus = le32_to_cpu(ql_iscsi_stats->tx_snack_req_pdus);
/* recv pdus */
stats->noprx_pdus = le32_to_cpu(ql_iscsi_stats->rx_nopin_pdus);
stats->scsirsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_scsi_resp_pdus);
stats->tmfrsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_tmf_resp_pdus);
stats->textrsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_text_resp_pdus);
stats->datain_pdus = le32_to_cpu(ql_iscsi_stats->rx_scsi_read_pdus);
stats->logoutrsp_pdus =
le32_to_cpu(ql_iscsi_stats->rx_logout_resp_pdus);
stats->r2t_pdus = le32_to_cpu(ql_iscsi_stats->rx_r2t_pdus);
stats->async_pdus = le32_to_cpu(ql_iscsi_stats->rx_async_pdus);
stats->rjt_pdus = le32_to_cpu(ql_iscsi_stats->rx_reject_pdus);
free_stats:
dma_free_coherent(&ha->pdev->dev, stats_size, ql_iscsi_stats,
iscsi_stats_dma);
exit_get_stats:
return;
}
static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc)
{
struct iscsi_cls_session *session;
struct iscsi_session *sess;
unsigned long flags;
enum blk_eh_timer_return ret = BLK_EH_NOT_HANDLED;
session = starget_to_session(scsi_target(sc->device));
sess = session->dd_data;
spin_lock_irqsave(&session->lock, flags);
if (session->state == ISCSI_SESSION_FAILED)
ret = BLK_EH_RESET_TIMER;
spin_unlock_irqrestore(&session->lock, flags);
return ret;
}
static int qla4xxx_host_get_param(struct Scsi_Host *shost,
enum iscsi_host_param param, char *buf)
{
struct scsi_qla_host *ha = to_qla_host(shost);
int len;
switch (param) {
case ISCSI_HOST_PARAM_HWADDRESS:
len = sysfs_format_mac(buf, ha->my_mac, MAC_ADDR_LEN);
break;
case ISCSI_HOST_PARAM_IPADDRESS:
len = sprintf(buf, "%pI4\n", &ha->ip_config.ip_address);
break;
case ISCSI_HOST_PARAM_INITIATOR_NAME:
len = sprintf(buf, "%s\n", ha->name_string);
break;
default:
return -ENOSYS;
}
return len;
}
static void qla4xxx_create_ipv4_iface(struct scsi_qla_host *ha)
{
if (ha->iface_ipv4)
return;
/* IPv4 */
ha->iface_ipv4 = iscsi_create_iface(ha->host,
&qla4xxx_iscsi_transport,
ISCSI_IFACE_TYPE_IPV4, 0, 0);
if (!ha->iface_ipv4)
ql4_printk(KERN_ERR, ha, "Could not create IPv4 iSCSI "
"iface0.\n");
}
static void qla4xxx_create_ipv6_iface(struct scsi_qla_host *ha)
{
if (!ha->iface_ipv6_0)
/* IPv6 iface-0 */
ha->iface_ipv6_0 = iscsi_create_iface(ha->host,
&qla4xxx_iscsi_transport,
ISCSI_IFACE_TYPE_IPV6, 0,
0);
if (!ha->iface_ipv6_0)
ql4_printk(KERN_ERR, ha, "Could not create IPv6 iSCSI "
"iface0.\n");
if (!ha->iface_ipv6_1)
/* IPv6 iface-1 */
ha->iface_ipv6_1 = iscsi_create_iface(ha->host,
&qla4xxx_iscsi_transport,
ISCSI_IFACE_TYPE_IPV6, 1,
0);
if (!ha->iface_ipv6_1)
ql4_printk(KERN_ERR, ha, "Could not create IPv6 iSCSI "
"iface1.\n");
}
static void qla4xxx_create_ifaces(struct scsi_qla_host *ha)
{
if (ha->ip_config.ipv4_options & IPOPT_IPV4_PROTOCOL_ENABLE)
qla4xxx_create_ipv4_iface(ha);
if (ha->ip_config.ipv6_options & IPV6_OPT_IPV6_PROTOCOL_ENABLE)
qla4xxx_create_ipv6_iface(ha);
}
static void qla4xxx_destroy_ipv4_iface(struct scsi_qla_host *ha)
{
if (ha->iface_ipv4) {
iscsi_destroy_iface(ha->iface_ipv4);
ha->iface_ipv4 = NULL;
}
}
static void qla4xxx_destroy_ipv6_iface(struct scsi_qla_host *ha)
{
if (ha->iface_ipv6_0) {
iscsi_destroy_iface(ha->iface_ipv6_0);
ha->iface_ipv6_0 = NULL;
}
if (ha->iface_ipv6_1) {
iscsi_destroy_iface(ha->iface_ipv6_1);
ha->iface_ipv6_1 = NULL;
}
}
static void qla4xxx_destroy_ifaces(struct scsi_qla_host *ha)
{
qla4xxx_destroy_ipv4_iface(ha);
qla4xxx_destroy_ipv6_iface(ha);
}
static void qla4xxx_set_ipv6(struct scsi_qla_host *ha,
struct iscsi_iface_param_info *iface_param,
struct addr_ctrl_blk *init_fw_cb)
{
/*
* iface_num 0 is valid for IPv6 Addr, linklocal, router, autocfg.
* iface_num 1 is valid only for IPv6 Addr.
*/
switch (iface_param->param) {
case ISCSI_NET_PARAM_IPV6_ADDR:
if (iface_param->iface_num & 0x1)
/* IPv6 Addr 1 */
memcpy(init_fw_cb->ipv6_addr1, iface_param->value,
sizeof(init_fw_cb->ipv6_addr1));
else
/* IPv6 Addr 0 */
memcpy(init_fw_cb->ipv6_addr0, iface_param->value,
sizeof(init_fw_cb->ipv6_addr0));
break;
case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
if (iface_param->iface_num & 0x1)
break;
memcpy(init_fw_cb->ipv6_if_id, &iface_param->value[8],
sizeof(init_fw_cb->ipv6_if_id));
break;
case ISCSI_NET_PARAM_IPV6_ROUTER:
if (iface_param->iface_num & 0x1)
break;
memcpy(init_fw_cb->ipv6_dflt_rtr_addr, iface_param->value,
sizeof(init_fw_cb->ipv6_dflt_rtr_addr));
break;
case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
/* Autocfg applies to even interface */
if (iface_param->iface_num & 0x1)
break;
if (iface_param->value[0] == ISCSI_IPV6_AUTOCFG_DISABLE)
init_fw_cb->ipv6_addtl_opts &=
cpu_to_le16(
~IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE);
else if (iface_param->value[0] == ISCSI_IPV6_AUTOCFG_ND_ENABLE)
init_fw_cb->ipv6_addtl_opts |=
cpu_to_le16(
IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE);
else
ql4_printk(KERN_ERR, ha, "Invalid autocfg setting for "
"IPv6 addr\n");
break;
case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
/* Autocfg applies to even interface */
if (iface_param->iface_num & 0x1)
break;
if (iface_param->value[0] ==
ISCSI_IPV6_LINKLOCAL_AUTOCFG_ENABLE)
init_fw_cb->ipv6_addtl_opts |= cpu_to_le16(
IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR);
else if (iface_param->value[0] ==
ISCSI_IPV6_LINKLOCAL_AUTOCFG_DISABLE)
init_fw_cb->ipv6_addtl_opts &= cpu_to_le16(
~IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR);
else
ql4_printk(KERN_ERR, ha, "Invalid autocfg setting for "
"IPv6 linklocal addr\n");
break;
case ISCSI_NET_PARAM_IPV6_ROUTER_AUTOCFG:
/* Autocfg applies to even interface */
if (iface_param->iface_num & 0x1)
break;
if (iface_param->value[0] == ISCSI_IPV6_ROUTER_AUTOCFG_ENABLE)
memset(init_fw_cb->ipv6_dflt_rtr_addr, 0,
sizeof(init_fw_cb->ipv6_dflt_rtr_addr));
break;
case ISCSI_NET_PARAM_IFACE_ENABLE:
if (iface_param->value[0] == ISCSI_IFACE_ENABLE) {
init_fw_cb->ipv6_opts |=
cpu_to_le16(IPV6_OPT_IPV6_PROTOCOL_ENABLE);
qla4xxx_create_ipv6_iface(ha);
} else {
init_fw_cb->ipv6_opts &=
cpu_to_le16(~IPV6_OPT_IPV6_PROTOCOL_ENABLE &
0xFFFF);
qla4xxx_destroy_ipv6_iface(ha);
}
break;
case ISCSI_NET_PARAM_VLAN_TAG:
if (iface_param->len != sizeof(init_fw_cb->ipv6_vlan_tag))
break;
init_fw_cb->ipv6_vlan_tag =
cpu_to_be16(*(uint16_t *)iface_param->value);
break;
case ISCSI_NET_PARAM_VLAN_ENABLED:
if (iface_param->value[0] == ISCSI_VLAN_ENABLE)
init_fw_cb->ipv6_opts |=
cpu_to_le16(IPV6_OPT_VLAN_TAGGING_ENABLE);
else
init_fw_cb->ipv6_opts &=
cpu_to_le16(~IPV6_OPT_VLAN_TAGGING_ENABLE);
break;
case ISCSI_NET_PARAM_MTU:
init_fw_cb->eth_mtu_size =
cpu_to_le16(*(uint16_t *)iface_param->value);
break;
case ISCSI_NET_PARAM_PORT:
/* Autocfg applies to even interface */
if (iface_param->iface_num & 0x1)
break;
init_fw_cb->ipv6_port =
cpu_to_le16(*(uint16_t *)iface_param->value);
break;
default:
ql4_printk(KERN_ERR, ha, "Unknown IPv6 param = %d\n",
iface_param->param);
break;
}
}
static void qla4xxx_set_ipv4(struct scsi_qla_host *ha,
struct iscsi_iface_param_info *iface_param,
struct addr_ctrl_blk *init_fw_cb)
{
switch (iface_param->param) {
case ISCSI_NET_PARAM_IPV4_ADDR:
memcpy(init_fw_cb->ipv4_addr, iface_param->value,
sizeof(init_fw_cb->ipv4_addr));
break;
case ISCSI_NET_PARAM_IPV4_SUBNET:
memcpy(init_fw_cb->ipv4_subnet, iface_param->value,
sizeof(init_fw_cb->ipv4_subnet));
break;
case ISCSI_NET_PARAM_IPV4_GW:
memcpy(init_fw_cb->ipv4_gw_addr, iface_param->value,
sizeof(init_fw_cb->ipv4_gw_addr));
break;
case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
if (iface_param->value[0] == ISCSI_BOOTPROTO_DHCP)
init_fw_cb->ipv4_tcp_opts |=
cpu_to_le16(TCPOPT_DHCP_ENABLE);
else if (iface_param->value[0] == ISCSI_BOOTPROTO_STATIC)
init_fw_cb->ipv4_tcp_opts &=
cpu_to_le16(~TCPOPT_DHCP_ENABLE);
else
ql4_printk(KERN_ERR, ha, "Invalid IPv4 bootproto\n");
break;
case ISCSI_NET_PARAM_IFACE_ENABLE:
if (iface_param->value[0] == ISCSI_IFACE_ENABLE) {
init_fw_cb->ipv4_ip_opts |=
cpu_to_le16(IPOPT_IPV4_PROTOCOL_ENABLE);
qla4xxx_create_ipv4_iface(ha);
} else {
init_fw_cb->ipv4_ip_opts &=
cpu_to_le16(~IPOPT_IPV4_PROTOCOL_ENABLE &
0xFFFF);
qla4xxx_destroy_ipv4_iface(ha);
}
break;
case ISCSI_NET_PARAM_VLAN_TAG:
if (iface_param->len != sizeof(init_fw_cb->ipv4_vlan_tag))
break;
init_fw_cb->ipv4_vlan_tag =
cpu_to_be16(*(uint16_t *)iface_param->value);
break;
case ISCSI_NET_PARAM_VLAN_ENABLED:
if (iface_param->value[0] == ISCSI_VLAN_ENABLE)
init_fw_cb->ipv4_ip_opts |=
cpu_to_le16(IPOPT_VLAN_TAGGING_ENABLE);
else
init_fw_cb->ipv4_ip_opts &=
cpu_to_le16(~IPOPT_VLAN_TAGGING_ENABLE);
break;
case ISCSI_NET_PARAM_MTU:
init_fw_cb->eth_mtu_size =
cpu_to_le16(*(uint16_t *)iface_param->value);
break;
case ISCSI_NET_PARAM_PORT:
init_fw_cb->ipv4_port =
cpu_to_le16(*(uint16_t *)iface_param->value);
break;
default:
ql4_printk(KERN_ERR, ha, "Unknown IPv4 param = %d\n",
iface_param->param);
break;
}
}
static void
qla4xxx_initcb_to_acb(struct addr_ctrl_blk *init_fw_cb)
{
struct addr_ctrl_blk_def *acb;
acb = (struct addr_ctrl_blk_def *)init_fw_cb;
memset(acb->reserved1, 0, sizeof(acb->reserved1));
memset(acb->reserved2, 0, sizeof(acb->reserved2));
memset(acb->reserved3, 0, sizeof(acb->reserved3));
memset(acb->reserved4, 0, sizeof(acb->reserved4));
memset(acb->reserved5, 0, sizeof(acb->reserved5));
memset(acb->reserved6, 0, sizeof(acb->reserved6));
memset(acb->reserved7, 0, sizeof(acb->reserved7));
memset(acb->reserved8, 0, sizeof(acb->reserved8));
memset(acb->reserved9, 0, sizeof(acb->reserved9));
memset(acb->reserved10, 0, sizeof(acb->reserved10));
memset(acb->reserved11, 0, sizeof(acb->reserved11));
memset(acb->reserved12, 0, sizeof(acb->reserved12));
memset(acb->reserved13, 0, sizeof(acb->reserved13));
memset(acb->reserved14, 0, sizeof(acb->reserved14));
memset(acb->reserved15, 0, sizeof(acb->reserved15));
}
static int
qla4xxx_iface_set_param(struct Scsi_Host *shost, void *data, uint32_t len)
{
struct scsi_qla_host *ha = to_qla_host(shost);
int rval = 0;
struct iscsi_iface_param_info *iface_param = NULL;
struct addr_ctrl_blk *init_fw_cb = NULL;
dma_addr_t init_fw_cb_dma;
uint32_t mbox_cmd[MBOX_REG_COUNT];
uint32_t mbox_sts[MBOX_REG_COUNT];
uint32_t rem = len;
struct nlattr *attr;
init_fw_cb = dma_alloc_coherent(&ha->pdev->dev,
sizeof(struct addr_ctrl_blk),
&init_fw_cb_dma, GFP_KERNEL);
if (!init_fw_cb) {
ql4_printk(KERN_ERR, ha, "%s: Unable to alloc init_cb\n",
__func__);
return -ENOMEM;
}
memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk));
memset(&mbox_cmd, 0, sizeof(mbox_cmd));
memset(&mbox_sts, 0, sizeof(mbox_sts));
if (qla4xxx_get_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma)) {
ql4_printk(KERN_ERR, ha, "%s: get ifcb failed\n", __func__);
rval = -EIO;
goto exit_init_fw_cb;
}
nla_for_each_attr(attr, data, len, rem) {
iface_param = nla_data(attr);
if (iface_param->param_type != ISCSI_NET_PARAM)
continue;
switch (iface_param->iface_type) {
case ISCSI_IFACE_TYPE_IPV4:
switch (iface_param->iface_num) {
case 0:
qla4xxx_set_ipv4(ha, iface_param, init_fw_cb);
break;
default:
/* Cannot have more than one IPv4 interface */
ql4_printk(KERN_ERR, ha, "Invalid IPv4 iface "
"number = %d\n",
iface_param->iface_num);
break;
}
break;
case ISCSI_IFACE_TYPE_IPV6:
switch (iface_param->iface_num) {
case 0:
case 1:
qla4xxx_set_ipv6(ha, iface_param, init_fw_cb);
break;
default:
/* Cannot have more than two IPv6 interface */
ql4_printk(KERN_ERR, ha, "Invalid IPv6 iface "
"number = %d\n",
iface_param->iface_num);
break;
}
break;
default:
ql4_printk(KERN_ERR, ha, "Invalid iface type\n");
break;
}
}
init_fw_cb->cookie = cpu_to_le32(0x11BEAD5A);
rval = qla4xxx_set_flash(ha, init_fw_cb_dma, FLASH_SEGMENT_IFCB,
sizeof(struct addr_ctrl_blk),
FLASH_OPT_RMW_COMMIT);
if (rval != QLA_SUCCESS) {
ql4_printk(KERN_ERR, ha, "%s: set flash mbx failed\n",
__func__);
rval = -EIO;
goto exit_init_fw_cb;
}
qla4xxx_disable_acb(ha);
qla4xxx_initcb_to_acb(init_fw_cb);
rval = qla4xxx_set_acb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma);
if (rval != QLA_SUCCESS) {
ql4_printk(KERN_ERR, ha, "%s: set acb mbx failed\n",
__func__);
rval = -EIO;
goto exit_init_fw_cb;
}
memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk));
qla4xxx_update_local_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb,
init_fw_cb_dma);
exit_init_fw_cb:
dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk),
init_fw_cb, init_fw_cb_dma);
return rval;
}
static int qla4xxx_conn_get_param(struct iscsi_cls_conn *cls_conn,
enum iscsi_param param, char *buf)
{
struct iscsi_conn *conn;
struct qla_conn *qla_conn;
struct sockaddr *dst_addr;
int len = 0;
conn = cls_conn->dd_data;
qla_conn = conn->dd_data;
dst_addr = &qla_conn->qla_ep->dst_addr;
switch (param) {
case ISCSI_PARAM_CONN_PORT:
case ISCSI_PARAM_CONN_ADDRESS:
return iscsi_conn_get_addr_param((struct sockaddr_storage *)
dst_addr, param, buf);
default:
return iscsi_conn_get_param(cls_conn, param, buf);
}
return len;
}
static struct iscsi_cls_session *
qla4xxx_session_create(struct iscsi_endpoint *ep,
uint16_t cmds_max, uint16_t qdepth,
uint32_t initial_cmdsn)
{
struct iscsi_cls_session *cls_sess;
struct scsi_qla_host *ha;
struct qla_endpoint *qla_ep;
struct ddb_entry *ddb_entry;
uint32_t ddb_index;
uint32_t mbx_sts = 0;
struct iscsi_session *sess;
struct sockaddr *dst_addr;
int ret;
DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
if (!ep) {
printk(KERN_ERR "qla4xxx: missing ep.\n");
return NULL;
}
qla_ep = ep->dd_data;
dst_addr = (struct sockaddr *)&qla_ep->dst_addr;
ha = to_qla_host(qla_ep->host);
get_ddb_index:
ddb_index = find_first_zero_bit(ha->ddb_idx_map, MAX_DDB_ENTRIES);
if (ddb_index >= MAX_DDB_ENTRIES) {
DEBUG2(ql4_printk(KERN_INFO, ha,
"Free DDB index not available\n"));
return NULL;
}
if (test_and_set_bit(ddb_index, ha->ddb_idx_map))
goto get_ddb_index;
DEBUG2(ql4_printk(KERN_INFO, ha,
"Found a free DDB index at %d\n", ddb_index));
ret = qla4xxx_req_ddb_entry(ha, ddb_index, &mbx_sts);
if (ret == QLA_ERROR) {
if (mbx_sts == MBOX_STS_COMMAND_ERROR) {
ql4_printk(KERN_INFO, ha,
"DDB index = %d not available trying next\n",
ddb_index);
goto get_ddb_index;
}
DEBUG2(ql4_printk(KERN_INFO, ha,
"Free FW DDB not available\n"));
return NULL;
}
cls_sess = iscsi_session_setup(&qla4xxx_iscsi_transport, qla_ep->host,
cmds_max, sizeof(struct ddb_entry),
sizeof(struct ql4_task_data),
initial_cmdsn, ddb_index);
if (!cls_sess)
return NULL;
sess = cls_sess->dd_data;
ddb_entry = sess->dd_data;
ddb_entry->fw_ddb_index = ddb_index;
ddb_entry->fw_ddb_device_state = DDB_DS_NO_CONNECTION_ACTIVE;
ddb_entry->ha = ha;
ddb_entry->sess = cls_sess;
cls_sess->recovery_tmo = ql4xsess_recovery_tmo;
ha->fw_ddb_index_map[ddb_entry->fw_ddb_index] = ddb_entry;
ha->tot_ddbs++;
return cls_sess;
}
static void qla4xxx_session_destroy(struct iscsi_cls_session *cls_sess)
{
struct iscsi_session *sess;
struct ddb_entry *ddb_entry;
struct scsi_qla_host *ha;
unsigned long flags;
DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
sess = cls_sess->dd_data;
ddb_entry = sess->dd_data;
ha = ddb_entry->ha;
qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
spin_lock_irqsave(&ha->hardware_lock, flags);
qla4xxx_free_ddb(ha, ddb_entry);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
iscsi_session_teardown(cls_sess);
}
static struct iscsi_cls_conn *
qla4xxx_conn_create(struct iscsi_cls_session *cls_sess, uint32_t conn_idx)
{
struct iscsi_cls_conn *cls_conn;
struct iscsi_session *sess;
struct ddb_entry *ddb_entry;
DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
cls_conn = iscsi_conn_setup(cls_sess, sizeof(struct qla_conn),
conn_idx);
sess = cls_sess->dd_data;
ddb_entry = sess->dd_data;
ddb_entry->conn = cls_conn;
return cls_conn;
}
static int qla4xxx_conn_bind(struct iscsi_cls_session *cls_session,
struct iscsi_cls_conn *cls_conn,
uint64_t transport_fd, int is_leading)
{
struct iscsi_conn *conn;
struct qla_conn *qla_conn;
struct iscsi_endpoint *ep;
DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
if (iscsi_conn_bind(cls_session, cls_conn, is_leading))
return -EINVAL;
ep = iscsi_lookup_endpoint(transport_fd);
conn = cls_conn->dd_data;
qla_conn = conn->dd_data;
qla_conn->qla_ep = ep->dd_data;
return 0;
}
static int qla4xxx_conn_start(struct iscsi_cls_conn *cls_conn)
{
struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
struct iscsi_session *sess;
struct ddb_entry *ddb_entry;
struct scsi_qla_host *ha;
struct dev_db_entry *fw_ddb_entry;
dma_addr_t fw_ddb_entry_dma;
uint32_t mbx_sts = 0;
int ret = 0;
int status = QLA_SUCCESS;
DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
sess = cls_sess->dd_data;
ddb_entry = sess->dd_data;
ha = ddb_entry->ha;
fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
&fw_ddb_entry_dma, GFP_KERNEL);
if (!fw_ddb_entry) {
ql4_printk(KERN_ERR, ha,
"%s: Unable to allocate dma buffer\n", __func__);
return -ENOMEM;
}
ret = qla4xxx_set_param_ddbentry(ha, ddb_entry, cls_conn, &mbx_sts);
if (ret) {
/* If iscsid is stopped and started then no need to do
* set param again since ddb state will be already
* active and FW does not allow set ddb to an
* active session.
*/
if (mbx_sts)
if (ddb_entry->fw_ddb_device_state ==
DDB_DS_SESSION_ACTIVE) {
iscsi_conn_start(ddb_entry->conn);
iscsi_conn_login_event(ddb_entry->conn,
ISCSI_CONN_STATE_LOGGED_IN);
goto exit_set_param;
}
ql4_printk(KERN_ERR, ha, "%s: Failed set param for index[%d]\n",
__func__, ddb_entry->fw_ddb_index);
goto exit_conn_start;
}
status = qla4xxx_conn_open(ha, ddb_entry->fw_ddb_index);
if (status == QLA_ERROR) {
ql4_printk(KERN_ERR, ha, "%s: Login failed: %s\n", __func__,
sess->targetname);
ret = -EINVAL;
goto exit_conn_start;
}
if (ddb_entry->fw_ddb_device_state == DDB_DS_NO_CONNECTION_ACTIVE)
ddb_entry->fw_ddb_device_state = DDB_DS_LOGIN_IN_PROCESS;
DEBUG2(printk(KERN_INFO "%s: DDB state [%d]\n", __func__,
ddb_entry->fw_ddb_device_state));
exit_set_param:
ret = 0;
exit_conn_start:
dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
fw_ddb_entry, fw_ddb_entry_dma);
return ret;
}
static void qla4xxx_conn_destroy(struct iscsi_cls_conn *cls_conn)
{
struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
struct iscsi_session *sess;
struct scsi_qla_host *ha;
struct ddb_entry *ddb_entry;
int options;
DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
sess = cls_sess->dd_data;
ddb_entry = sess->dd_data;
ha = ddb_entry->ha;
options = LOGOUT_OPTION_CLOSE_SESSION;
if (qla4xxx_session_logout_ddb(ha, ddb_entry, options) == QLA_ERROR)
ql4_printk(KERN_ERR, ha, "%s: Logout failed\n", __func__);
}
static void qla4xxx_task_work(struct work_struct *wdata)
{
struct ql4_task_data *task_data;
struct scsi_qla_host *ha;
struct passthru_status *sts;
struct iscsi_task *task;
struct iscsi_hdr *hdr;
uint8_t *data;
uint32_t data_len;
struct iscsi_conn *conn;
int hdr_len;
itt_t itt;
task_data = container_of(wdata, struct ql4_task_data, task_work);
ha = task_data->ha;
task = task_data->task;
sts = &task_data->sts;
hdr_len = sizeof(struct iscsi_hdr);
DEBUG3(printk(KERN_INFO "Status returned\n"));
DEBUG3(qla4xxx_dump_buffer(sts, 64));
DEBUG3(printk(KERN_INFO "Response buffer"));
DEBUG3(qla4xxx_dump_buffer(task_data->resp_buffer, 64));
conn = task->conn;
switch (sts->completionStatus) {
case PASSTHRU_STATUS_COMPLETE:
hdr = (struct iscsi_hdr *)task_data->resp_buffer;
/* Assign back the itt in hdr, until we use the PREASSIGN_TAG */
itt = sts->handle;
hdr->itt = itt;
data = task_data->resp_buffer + hdr_len;
data_len = task_data->resp_len - hdr_len;
iscsi_complete_pdu(conn, hdr, data, data_len);
break;
default:
ql4_printk(KERN_ERR, ha, "Passthru failed status = 0x%x\n",
sts->completionStatus);
break;
}
return;
}
static int qla4xxx_alloc_pdu(struct iscsi_task *task, uint8_t opcode)
{
struct ql4_task_data *task_data;
struct iscsi_session *sess;
struct ddb_entry *ddb_entry;
struct scsi_qla_host *ha;
int hdr_len;
sess = task->conn->session;
ddb_entry = sess->dd_data;
ha = ddb_entry->ha;
task_data = task->dd_data;
memset(task_data, 0, sizeof(struct ql4_task_data));
if (task->sc) {
ql4_printk(KERN_INFO, ha,
"%s: SCSI Commands not implemented\n", __func__);
return -EINVAL;
}
hdr_len = sizeof(struct iscsi_hdr);
task_data->ha = ha;
task_data->task = task;
if (task->data_count) {
task_data->data_dma = dma_map_single(&ha->pdev->dev, task->data,
task->data_count,
PCI_DMA_TODEVICE);
}
DEBUG2(ql4_printk(KERN_INFO, ha, "%s: MaxRecvLen %u, iscsi hrd %d\n",
__func__, task->conn->max_recv_dlength, hdr_len));
task_data->resp_len = task->conn->max_recv_dlength + hdr_len;
task_data->resp_buffer = dma_alloc_coherent(&ha->pdev->dev,
task_data->resp_len,
&task_data->resp_dma,
GFP_ATOMIC);
if (!task_data->resp_buffer)
goto exit_alloc_pdu;
task_data->req_len = task->data_count + hdr_len;
task_data->req_buffer = dma_alloc_coherent(&ha->pdev->dev,
task_data->req_len,
&task_data->req_dma,
GFP_ATOMIC);
if (!task_data->req_buffer)
goto exit_alloc_pdu;
task->hdr = task_data->req_buffer;
INIT_WORK(&task_data->task_work, qla4xxx_task_work);
return 0;
exit_alloc_pdu:
if (task_data->resp_buffer)
dma_free_coherent(&ha->pdev->dev, task_data->resp_len,
task_data->resp_buffer, task_data->resp_dma);
if (task_data->req_buffer)
dma_free_coherent(&ha->pdev->dev, task_data->req_len,
task_data->req_buffer, task_data->req_dma);
return -ENOMEM;
}
static void qla4xxx_task_cleanup(struct iscsi_task *task)
{
struct ql4_task_data *task_data;
struct iscsi_session *sess;
struct ddb_entry *ddb_entry;
struct scsi_qla_host *ha;
int hdr_len;
hdr_len = sizeof(struct iscsi_hdr);
sess = task->conn->session;
ddb_entry = sess->dd_data;
ha = ddb_entry->ha;
task_data = task->dd_data;
if (task->data_count) {
dma_unmap_single(&ha->pdev->dev, task_data->data_dma,
task->data_count, PCI_DMA_TODEVICE);
}
DEBUG2(ql4_printk(KERN_INFO, ha, "%s: MaxRecvLen %u, iscsi hrd %d\n",
__func__, task->conn->max_recv_dlength, hdr_len));
dma_free_coherent(&ha->pdev->dev, task_data->resp_len,
task_data->resp_buffer, task_data->resp_dma);
dma_free_coherent(&ha->pdev->dev, task_data->req_len,
task_data->req_buffer, task_data->req_dma);
return;
}
static int qla4xxx_task_xmit(struct iscsi_task *task)
{
struct scsi_cmnd *sc = task->sc;
struct iscsi_session *sess = task->conn->session;
struct ddb_entry *ddb_entry = sess->dd_data;
struct scsi_qla_host *ha = ddb_entry->ha;
if (!sc)
return qla4xxx_send_passthru0(task);
ql4_printk(KERN_INFO, ha, "%s: scsi cmd xmit not implemented\n",
__func__);
return -ENOSYS;
}
void qla4xxx_update_session_conn_param(struct scsi_qla_host *ha,
struct ddb_entry *ddb_entry)
{
struct iscsi_cls_session *cls_sess;
struct iscsi_cls_conn *cls_conn;
struct iscsi_session *sess;
struct iscsi_conn *conn;
uint32_t ddb_state;
dma_addr_t fw_ddb_entry_dma;
struct dev_db_entry *fw_ddb_entry;
fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
&fw_ddb_entry_dma, GFP_KERNEL);
if (!fw_ddb_entry) {
ql4_printk(KERN_ERR, ha,
"%s: Unable to allocate dma buffer\n", __func__);
return;
}
if (qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index, fw_ddb_entry,
fw_ddb_entry_dma, NULL, NULL, &ddb_state,
NULL, NULL, NULL) == QLA_ERROR) {
DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: failed "
"get_ddb_entry for fw_ddb_index %d\n",
ha->host_no, __func__,
ddb_entry->fw_ddb_index));
return;
}
cls_sess = ddb_entry->sess;
sess = cls_sess->dd_data;
cls_conn = ddb_entry->conn;
conn = cls_conn->dd_data;
/* Update params */
conn->max_recv_dlength = BYTE_UNITS *
le16_to_cpu(fw_ddb_entry->iscsi_max_rcv_data_seg_len);
conn->max_xmit_dlength = BYTE_UNITS *
le16_to_cpu(fw_ddb_entry->iscsi_max_snd_data_seg_len);
sess->initial_r2t_en =
(BIT_10 & le16_to_cpu(fw_ddb_entry->iscsi_options));
sess->max_r2t = le16_to_cpu(fw_ddb_entry->iscsi_max_outsnd_r2t);
sess->imm_data_en = (BIT_11 & le16_to_cpu(fw_ddb_entry->iscsi_options));
sess->first_burst = BYTE_UNITS *
le16_to_cpu(fw_ddb_entry->iscsi_first_burst_len);
sess->max_burst = BYTE_UNITS *
le16_to_cpu(fw_ddb_entry->iscsi_max_burst_len);
sess->time2wait = le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
sess->time2retain = le16_to_cpu(fw_ddb_entry->iscsi_def_time2retain);
sess->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
memcpy(sess->initiatorname, ha->name_string,
min(sizeof(ha->name_string), sizeof(sess->initiatorname)));
}
/*
* Timer routines
*/
static void qla4xxx_start_timer(struct scsi_qla_host *ha, void *func,
unsigned long interval)
{
DEBUG(printk("scsi: %s: Starting timer thread for adapter %d\n",
__func__, ha->host->host_no));
init_timer(&ha->timer);
ha->timer.expires = jiffies + interval * HZ;
ha->timer.data = (unsigned long)ha;
ha->timer.function = (void (*)(unsigned long))func;
add_timer(&ha->timer);
ha->timer_active = 1;
}
static void qla4xxx_stop_timer(struct scsi_qla_host *ha)
{
del_timer_sync(&ha->timer);
ha->timer_active = 0;
}
/***
* qla4xxx_mark_device_missing - blocks the session
* @cls_session: Pointer to the session to be blocked
* @ddb_entry: Pointer to device database entry
*
* This routine marks a device missing and close connection.
**/
void qla4xxx_mark_device_missing(struct iscsi_cls_session *cls_session)
{
iscsi_block_session(cls_session);
}
/**
* qla4xxx_mark_all_devices_missing - mark all devices as missing.
* @ha: Pointer to host adapter structure.
*
* This routine marks a device missing and resets the relogin retry count.
**/
void qla4xxx_mark_all_devices_missing(struct scsi_qla_host *ha)
{
iscsi_host_for_each_session(ha->host, qla4xxx_mark_device_missing);
}
static struct srb* qla4xxx_get_new_srb(struct scsi_qla_host *ha,
struct ddb_entry *ddb_entry,
struct scsi_cmnd *cmd)
{
struct srb *srb;
srb = mempool_alloc(ha->srb_mempool, GFP_ATOMIC);
if (!srb)
return srb;
kref_init(&srb->srb_ref);
srb->ha = ha;
srb->ddb = ddb_entry;
srb->cmd = cmd;
srb->flags = 0;
CMD_SP(cmd) = (void *)srb;
return srb;
}
static void qla4xxx_srb_free_dma(struct scsi_qla_host *ha, struct srb *srb)
{
struct scsi_cmnd *cmd = srb->cmd;
if (srb->flags & SRB_DMA_VALID) {
scsi_dma_unmap(cmd);
srb->flags &= ~SRB_DMA_VALID;
}
CMD_SP(cmd) = NULL;
}
void qla4xxx_srb_compl(struct kref *ref)
{
struct srb *srb = container_of(ref, struct srb, srb_ref);
struct scsi_cmnd *cmd = srb->cmd;
struct scsi_qla_host *ha = srb->ha;
qla4xxx_srb_free_dma(ha, srb);
mempool_free(srb, ha->srb_mempool);
cmd->scsi_done(cmd);
}
/**
* qla4xxx_queuecommand - scsi layer issues scsi command to driver.
* @host: scsi host
* @cmd: Pointer to Linux's SCSI command structure
*
* Remarks:
* This routine is invoked by Linux to send a SCSI command to the driver.
* The mid-level driver tries to ensure that queuecommand never gets
* invoked concurrently with itself or the interrupt handler (although
* the interrupt handler may call this routine as part of request-
* completion handling). Unfortunely, it sometimes calls the scheduler
* in interrupt context which is a big NO! NO!.
**/
static int qla4xxx_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd)
{
struct scsi_qla_host *ha = to_qla_host(host);
struct ddb_entry *ddb_entry = cmd->device->hostdata;
struct iscsi_cls_session *sess = ddb_entry->sess;
struct srb *srb;
int rval;
if (test_bit(AF_EEH_BUSY, &ha->flags)) {
if (test_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags))
cmd->result = DID_NO_CONNECT << 16;
else
cmd->result = DID_REQUEUE << 16;
goto qc_fail_command;
}
if (!sess) {
cmd->result = DID_IMM_RETRY << 16;
goto qc_fail_command;
}
rval = iscsi_session_chkready(sess);
if (rval) {
cmd->result = rval;
goto qc_fail_command;
}
if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) ||
test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) ||
test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) ||
!test_bit(AF_ONLINE, &ha->flags) ||
!test_bit(AF_LINK_UP, &ha->flags) ||
test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))
goto qc_host_busy;
srb = qla4xxx_get_new_srb(ha, ddb_entry, cmd);
if (!srb)
goto qc_host_busy;
rval = qla4xxx_send_command_to_isp(ha, srb);
if (rval != QLA_SUCCESS)
goto qc_host_busy_free_sp;
return 0;
qc_host_busy_free_sp:
qla4xxx_srb_free_dma(ha, srb);
mempool_free(srb, ha->srb_mempool);
qc_host_busy:
return SCSI_MLQUEUE_HOST_BUSY;
qc_fail_command:
cmd->scsi_done(cmd);
return 0;
}
/**
* qla4xxx_mem_free - frees memory allocated to adapter
* @ha: Pointer to host adapter structure.
*
* Frees memory previously allocated by qla4xxx_mem_alloc
**/
static void qla4xxx_mem_free(struct scsi_qla_host *ha)
{
if (ha->queues)
dma_free_coherent(&ha->pdev->dev, ha->queues_len, ha->queues,
ha->queues_dma);
ha->queues_len = 0;
ha->queues = NULL;
ha->queues_dma = 0;
ha->request_ring = NULL;
ha->request_dma = 0;
ha->response_ring = NULL;
ha->response_dma = 0;
ha->shadow_regs = NULL;
ha->shadow_regs_dma = 0;
/* Free srb pool. */
if (ha->srb_mempool)
mempool_destroy(ha->srb_mempool);
ha->srb_mempool = NULL;
if (ha->chap_dma_pool)
dma_pool_destroy(ha->chap_dma_pool);
if (ha->chap_list)
vfree(ha->chap_list);
ha->chap_list = NULL;
/* release io space registers */
if (is_qla8022(ha)) {
if (ha->nx_pcibase)
iounmap(
(struct device_reg_82xx __iomem *)ha->nx_pcibase);
} else if (ha->reg)
iounmap(ha->reg);
pci_release_regions(ha->pdev);
}
/**
* qla4xxx_mem_alloc - allocates memory for use by adapter.
* @ha: Pointer to host adapter structure
*
* Allocates DMA memory for request and response queues. Also allocates memory
* for srbs.
**/
static int qla4xxx_mem_alloc(struct scsi_qla_host *ha)
{
unsigned long align;
/* Allocate contiguous block of DMA memory for queues. */
ha->queues_len = ((REQUEST_QUEUE_DEPTH * QUEUE_SIZE) +
(RESPONSE_QUEUE_DEPTH * QUEUE_SIZE) +
sizeof(struct shadow_regs) +
MEM_ALIGN_VALUE +
(PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
ha->queues = dma_alloc_coherent(&ha->pdev->dev, ha->queues_len,
&ha->queues_dma, GFP_KERNEL);
if (ha->queues == NULL) {
ql4_printk(KERN_WARNING, ha,
"Memory Allocation failed - queues.\n");
goto mem_alloc_error_exit;
}
memset(ha->queues, 0, ha->queues_len);
/*
* As per RISC alignment requirements -- the bus-address must be a
* multiple of the request-ring size (in bytes).
*/
align = 0;
if ((unsigned long)ha->queues_dma & (MEM_ALIGN_VALUE - 1))
align = MEM_ALIGN_VALUE - ((unsigned long)ha->queues_dma &
(MEM_ALIGN_VALUE - 1));
/* Update request and response queue pointers. */
ha->request_dma = ha->queues_dma + align;
ha->request_ring = (struct queue_entry *) (ha->queues + align);
ha->response_dma = ha->queues_dma + align +
(REQUEST_QUEUE_DEPTH * QUEUE_SIZE);
ha->response_ring = (struct queue_entry *) (ha->queues + align +
(REQUEST_QUEUE_DEPTH *
QUEUE_SIZE));
ha->shadow_regs_dma = ha->queues_dma + align +
(REQUEST_QUEUE_DEPTH * QUEUE_SIZE) +
(RESPONSE_QUEUE_DEPTH * QUEUE_SIZE);
ha->shadow_regs = (struct shadow_regs *) (ha->queues + align +
(REQUEST_QUEUE_DEPTH *
QUEUE_SIZE) +
(RESPONSE_QUEUE_DEPTH *
QUEUE_SIZE));
/* Allocate memory for srb pool. */
ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab,
mempool_free_slab, srb_cachep);
if (ha->srb_mempool == NULL) {
ql4_printk(KERN_WARNING, ha,
"Memory Allocation failed - SRB Pool.\n");
goto mem_alloc_error_exit;
}
ha->chap_dma_pool = dma_pool_create("ql4_chap", &ha->pdev->dev,
CHAP_DMA_BLOCK_SIZE, 8, 0);
if (ha->chap_dma_pool == NULL) {
ql4_printk(KERN_WARNING, ha,
"%s: chap_dma_pool allocation failed..\n", __func__);
goto mem_alloc_error_exit;
}
return QLA_SUCCESS;
mem_alloc_error_exit:
qla4xxx_mem_free(ha);
return QLA_ERROR;
}
/**
* qla4_8xxx_check_fw_alive - Check firmware health
* @ha: Pointer to host adapter structure.
*
* Context: Interrupt
**/
static void qla4_8xxx_check_fw_alive(struct scsi_qla_host *ha)
{
uint32_t fw_heartbeat_counter, halt_status;
fw_heartbeat_counter = qla4_8xxx_rd_32(ha, QLA82XX_PEG_ALIVE_COUNTER);
/* If PEG_ALIVE_COUNTER is 0xffffffff, AER/EEH is in progress, ignore */
if (fw_heartbeat_counter == 0xffffffff) {
DEBUG2(printk(KERN_WARNING "scsi%ld: %s: Device in frozen "
"state, QLA82XX_PEG_ALIVE_COUNTER is 0xffffffff\n",
ha->host_no, __func__));
return;
}
if (ha->fw_heartbeat_counter == fw_heartbeat_counter) {
ha->seconds_since_last_heartbeat++;
/* FW not alive after 2 seconds */
if (ha->seconds_since_last_heartbeat == 2) {
ha->seconds_since_last_heartbeat = 0;
halt_status = qla4_8xxx_rd_32(ha,
QLA82XX_PEG_HALT_STATUS1);
ql4_printk(KERN_INFO, ha,
"scsi(%ld): %s, Dumping hw/fw registers:\n "
" PEG_HALT_STATUS1: 0x%x, PEG_HALT_STATUS2:"
" 0x%x,\n PEG_NET_0_PC: 0x%x, PEG_NET_1_PC:"
" 0x%x,\n PEG_NET_2_PC: 0x%x, PEG_NET_3_PC:"
" 0x%x,\n PEG_NET_4_PC: 0x%x\n",
ha->host_no, __func__, halt_status,
qla4_8xxx_rd_32(ha,
QLA82XX_PEG_HALT_STATUS2),
qla4_8xxx_rd_32(ha, QLA82XX_CRB_PEG_NET_0 +
0x3c),
qla4_8xxx_rd_32(ha, QLA82XX_CRB_PEG_NET_1 +
0x3c),
qla4_8xxx_rd_32(ha, QLA82XX_CRB_PEG_NET_2 +
0x3c),
qla4_8xxx_rd_32(ha, QLA82XX_CRB_PEG_NET_3 +
0x3c),
qla4_8xxx_rd_32(ha, QLA82XX_CRB_PEG_NET_4 +
0x3c));
/* Since we cannot change dev_state in interrupt
* context, set appropriate DPC flag then wakeup
* DPC */
if (halt_status & HALT_STATUS_UNRECOVERABLE)
set_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags);
else {
printk("scsi%ld: %s: detect abort needed!\n",
ha->host_no, __func__);
set_bit(DPC_RESET_HA, &ha->dpc_flags);
}
qla4xxx_wake_dpc(ha);
qla4xxx_mailbox_premature_completion(ha);
}
} else
ha->seconds_since_last_heartbeat = 0;
ha->fw_heartbeat_counter = fw_heartbeat_counter;
}
/**
* qla4_8xxx_watchdog - Poll dev state
* @ha: Pointer to host adapter structure.
*
* Context: Interrupt
**/
void qla4_8xxx_watchdog(struct scsi_qla_host *ha)
{
uint32_t dev_state;
dev_state = qla4_8xxx_rd_32(ha, QLA82XX_CRB_DEV_STATE);
/* don't poll if reset is going on */
if (!(test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) ||
test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags))) {
if (dev_state == QLA82XX_DEV_NEED_RESET &&
!test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
if (!ql4xdontresethba) {
ql4_printk(KERN_INFO, ha, "%s: HW State: "
"NEED RESET!\n", __func__);
set_bit(DPC_RESET_HA, &ha->dpc_flags);
qla4xxx_wake_dpc(ha);
qla4xxx_mailbox_premature_completion(ha);
}
} else if (dev_state == QLA82XX_DEV_NEED_QUIESCENT &&
!test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) {
ql4_printk(KERN_INFO, ha, "%s: HW State: NEED QUIES!\n",
__func__);
set_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags);
qla4xxx_wake_dpc(ha);
} else {
/* Check firmware health */
qla4_8xxx_check_fw_alive(ha);
}
}
}
/**
* qla4xxx_timer - checks every second for work to do.
* @ha: Pointer to host adapter structure.
**/
static void qla4xxx_timer(struct scsi_qla_host *ha)
{
int start_dpc = 0;
uint16_t w;
/* If we are in the middle of AER/EEH processing
* skip any processing and reschedule the timer
*/
if (test_bit(AF_EEH_BUSY, &ha->flags)) {
mod_timer(&ha->timer, jiffies + HZ);
return;
}
/* Hardware read to trigger an EEH error during mailbox waits. */
if (!pci_channel_offline(ha->pdev))
pci_read_config_word(ha->pdev, PCI_VENDOR_ID, &w);
if (is_qla8022(ha)) {
qla4_8xxx_watchdog(ha);
}
if (!is_qla8022(ha)) {
/* Check for heartbeat interval. */
if (ha->firmware_options & FWOPT_HEARTBEAT_ENABLE &&
ha->heartbeat_interval != 0) {
ha->seconds_since_last_heartbeat++;
if (ha->seconds_since_last_heartbeat >
ha->heartbeat_interval + 2)
set_bit(DPC_RESET_HA, &ha->dpc_flags);
}
}
/* Wakeup the dpc routine for this adapter, if needed. */
if (start_dpc ||
test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags) ||
test_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags) ||
test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) ||
test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
test_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags) ||
test_bit(DPC_LINK_CHANGED, &ha->dpc_flags) ||
test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) ||
test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) ||
test_bit(DPC_AEN, &ha->dpc_flags)) {
DEBUG2(printk("scsi%ld: %s: scheduling dpc routine"
" - dpc flags = 0x%lx\n",
ha->host_no, __func__, ha->dpc_flags));
qla4xxx_wake_dpc(ha);
}
/* Reschedule timer thread to call us back in one second */
mod_timer(&ha->timer, jiffies + HZ);
DEBUG2(ha->seconds_since_last_intr++);
}
/**
* qla4xxx_cmd_wait - waits for all outstanding commands to complete
* @ha: Pointer to host adapter structure.
*
* This routine stalls the driver until all outstanding commands are returned.
* Caller must release the Hardware Lock prior to calling this routine.
**/
static int qla4xxx_cmd_wait(struct scsi_qla_host *ha)
{
uint32_t index = 0;
unsigned long flags;
struct scsi_cmnd *cmd;
unsigned long wtime = jiffies + (WAIT_CMD_TOV * HZ);
DEBUG2(ql4_printk(KERN_INFO, ha, "Wait up to %d seconds for cmds to "
"complete\n", WAIT_CMD_TOV));
while (!time_after_eq(jiffies, wtime)) {
spin_lock_irqsave(&ha->hardware_lock, flags);
/* Find a command that hasn't completed. */
for (index = 0; index < ha->host->can_queue; index++) {
cmd = scsi_host_find_tag(ha->host, index);
/*
* We cannot just check if the index is valid,
* becase if we are run from the scsi eh, then
* the scsi/block layer is going to prevent
* the tag from being released.
*/
if (cmd != NULL && CMD_SP(cmd))
break;
}
spin_unlock_irqrestore(&ha->hardware_lock, flags);
/* If No Commands are pending, wait is complete */
if (index == ha->host->can_queue)
return QLA_SUCCESS;
msleep(1000);
}
/* If we timed out on waiting for commands to come back
* return ERROR. */
return QLA_ERROR;
}
int qla4xxx_hw_reset(struct scsi_qla_host *ha)
{
uint32_t ctrl_status;
unsigned long flags = 0;
DEBUG2(printk(KERN_ERR "scsi%ld: %s\n", ha->host_no, __func__));
if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
return QLA_ERROR;
spin_lock_irqsave(&ha->hardware_lock, flags);
/*
* If the SCSI Reset Interrupt bit is set, clear it.
* Otherwise, the Soft Reset won't work.
*/
ctrl_status = readw(&ha->reg->ctrl_status);
if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0)
writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status);
/* Issue Soft Reset */
writel(set_rmask(CSR_SOFT_RESET), &ha->reg->ctrl_status);
readl(&ha->reg->ctrl_status);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
return QLA_SUCCESS;
}
/**
* qla4xxx_soft_reset - performs soft reset.
* @ha: Pointer to host adapter structure.
**/
int qla4xxx_soft_reset(struct scsi_qla_host *ha)
{
uint32_t max_wait_time;
unsigned long flags = 0;
int status;
uint32_t ctrl_status;
status = qla4xxx_hw_reset(ha);
if (status != QLA_SUCCESS)
return status;
status = QLA_ERROR;
/* Wait until the Network Reset Intr bit is cleared */
max_wait_time = RESET_INTR_TOV;
do {
spin_lock_irqsave(&ha->hardware_lock, flags);
ctrl_status = readw(&ha->reg->ctrl_status);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
if ((ctrl_status & CSR_NET_RESET_INTR) == 0)
break;
msleep(1000);
} while ((--max_wait_time));
if ((ctrl_status & CSR_NET_RESET_INTR) != 0) {
DEBUG2(printk(KERN_WARNING
"scsi%ld: Network Reset Intr not cleared by "
"Network function, clearing it now!\n",
ha->host_no));
spin_lock_irqsave(&ha->hardware_lock, flags);
writel(set_rmask(CSR_NET_RESET_INTR), &ha->reg->ctrl_status);
readl(&ha->reg->ctrl_status);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
}
/* Wait until the firmware tells us the Soft Reset is done */
max_wait_time = SOFT_RESET_TOV;
do {
spin_lock_irqsave(&ha->hardware_lock, flags);
ctrl_status = readw(&ha->reg->ctrl_status);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
if ((ctrl_status & CSR_SOFT_RESET) == 0) {
status = QLA_SUCCESS;
break;
}
msleep(1000);
} while ((--max_wait_time));
/*
* Also, make sure that the SCSI Reset Interrupt bit has been cleared
* after the soft reset has taken place.
*/
spin_lock_irqsave(&ha->hardware_lock, flags);
ctrl_status = readw(&ha->reg->ctrl_status);
if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0) {
writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status);
readl(&ha->reg->ctrl_status);
}
spin_unlock_irqrestore(&ha->hardware_lock, flags);
/* If soft reset fails then most probably the bios on other
* function is also enabled.
* Since the initialization is sequential the other fn
* wont be able to acknowledge the soft reset.
* Issue a force soft reset to workaround this scenario.
*/
if (max_wait_time == 0) {
/* Issue Force Soft Reset */
spin_lock_irqsave(&ha->hardware_lock, flags);
writel(set_rmask(CSR_FORCE_SOFT_RESET), &ha->reg->ctrl_status);
readl(&ha->reg->ctrl_status);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
/* Wait until the firmware tells us the Soft Reset is done */
max_wait_time = SOFT_RESET_TOV;
do {
spin_lock_irqsave(&ha->hardware_lock, flags);
ctrl_status = readw(&ha->reg->ctrl_status);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
if ((ctrl_status & CSR_FORCE_SOFT_RESET) == 0) {
status = QLA_SUCCESS;
break;
}
msleep(1000);
} while ((--max_wait_time));
}
return status;
}
/**
* qla4xxx_abort_active_cmds - returns all outstanding i/o requests to O.S.
* @ha: Pointer to host adapter structure.
* @res: returned scsi status
*
* This routine is called just prior to a HARD RESET to return all
* outstanding commands back to the Operating System.
* Caller should make sure that the following locks are released
* before this calling routine: Hardware lock, and io_request_lock.
**/
static void qla4xxx_abort_active_cmds(struct scsi_qla_host *ha, int res)
{
struct srb *srb;
int i;
unsigned long flags;
spin_lock_irqsave(&ha->hardware_lock, flags);
for (i = 0; i < ha->host->can_queue; i++) {
srb = qla4xxx_del_from_active_array(ha, i);
if (srb != NULL) {
srb->cmd->result = res;
kref_put(&srb->srb_ref, qla4xxx_srb_compl);
}
}
spin_unlock_irqrestore(&ha->hardware_lock, flags);
}
void qla4xxx_dead_adapter_cleanup(struct scsi_qla_host *ha)
{
clear_bit(AF_ONLINE, &ha->flags);
/* Disable the board */
ql4_printk(KERN_INFO, ha, "Disabling the board\n");
qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
qla4xxx_mark_all_devices_missing(ha);
clear_bit(AF_INIT_DONE, &ha->flags);
}
static void qla4xxx_fail_session(struct iscsi_cls_session *cls_session)
{
struct iscsi_session *sess;
struct ddb_entry *ddb_entry;
sess = cls_session->dd_data;
ddb_entry = sess->dd_data;
ddb_entry->fw_ddb_device_state = DDB_DS_SESSION_FAILED;
iscsi_session_failure(cls_session->dd_data, ISCSI_ERR_CONN_FAILED);
}
/**
* qla4xxx_recover_adapter - recovers adapter after a fatal error
* @ha: Pointer to host adapter structure.
**/
static int qla4xxx_recover_adapter(struct scsi_qla_host *ha)
{
int status = QLA_ERROR;
uint8_t reset_chip = 0;
/* Stall incoming I/O until we are done */
scsi_block_requests(ha->host);
clear_bit(AF_ONLINE, &ha->flags);
clear_bit(AF_LINK_UP, &ha->flags);
DEBUG2(ql4_printk(KERN_INFO, ha, "%s: adapter OFFLINE\n", __func__));
set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
iscsi_host_for_each_session(ha->host, qla4xxx_fail_session);
if (test_bit(DPC_RESET_HA, &ha->dpc_flags))
reset_chip = 1;
/* For the DPC_RESET_HA_INTR case (ISP-4xxx specific)
* do not reset adapter, jump to initialize_adapter */
if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
status = QLA_SUCCESS;
goto recover_ha_init_adapter;
}
/* For the ISP-82xx adapter, issue a stop_firmware if invoked
* from eh_host_reset or ioctl module */
if (is_qla8022(ha) && !reset_chip &&
test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) {
DEBUG2(ql4_printk(KERN_INFO, ha,
"scsi%ld: %s - Performing stop_firmware...\n",
ha->host_no, __func__));
status = ha->isp_ops->reset_firmware(ha);
if (status == QLA_SUCCESS) {
if (!test_bit(AF_FW_RECOVERY, &ha->flags))
qla4xxx_cmd_wait(ha);
ha->isp_ops->disable_intrs(ha);
qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
} else {
/* If the stop_firmware fails then
* reset the entire chip */
reset_chip = 1;
clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
set_bit(DPC_RESET_HA, &ha->dpc_flags);
}
}
/* Issue full chip reset if recovering from a catastrophic error,
* or if stop_firmware fails for ISP-82xx.
* This is the default case for ISP-4xxx */
if (!is_qla8022(ha) || reset_chip) {
if (!test_bit(AF_FW_RECOVERY, &ha->flags))
qla4xxx_cmd_wait(ha);
qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
DEBUG2(ql4_printk(KERN_INFO, ha,
"scsi%ld: %s - Performing chip reset..\n",
ha->host_no, __func__));
status = ha->isp_ops->reset_chip(ha);
}
/* Flush any pending ddb changed AENs */
qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
recover_ha_init_adapter:
/* Upon successful firmware/chip reset, re-initialize the adapter */
if (status == QLA_SUCCESS) {
/* For ISP-4xxx, force function 1 to always initialize
* before function 3 to prevent both funcions from
* stepping on top of the other */
if (!is_qla8022(ha) && (ha->mac_index == 3))
ssleep(6);
/* NOTE: AF_ONLINE flag set upon successful completion of
* qla4xxx_initialize_adapter */
status = qla4xxx_initialize_adapter(ha);
}
/* Retry failed adapter initialization, if necessary
* Do not retry initialize_adapter for RESET_HA_INTR (ISP-4xxx specific)
* case to prevent ping-pong resets between functions */
if (!test_bit(AF_ONLINE, &ha->flags) &&
!test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
/* Adapter initialization failed, see if we can retry
* resetting the ha.
* Since we don't want to block the DPC for too long
* with multiple resets in the same thread,
* utilize DPC to retry */
if (!test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags)) {
ha->retry_reset_ha_cnt = MAX_RESET_HA_RETRIES;
DEBUG2(printk("scsi%ld: recover adapter - retrying "
"(%d) more times\n", ha->host_no,
ha->retry_reset_ha_cnt));
set_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
status = QLA_ERROR;
} else {
if (ha->retry_reset_ha_cnt > 0) {
/* Schedule another Reset HA--DPC will retry */
ha->retry_reset_ha_cnt--;
DEBUG2(printk("scsi%ld: recover adapter - "
"retry remaining %d\n",
ha->host_no,
ha->retry_reset_ha_cnt));
status = QLA_ERROR;
}
if (ha->retry_reset_ha_cnt == 0) {
/* Recover adapter retries have been exhausted.
* Adapter DEAD */
DEBUG2(printk("scsi%ld: recover adapter "
"failed - board disabled\n",
ha->host_no));
qla4xxx_dead_adapter_cleanup(ha);
clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
clear_bit(DPC_RESET_HA, &ha->dpc_flags);
clear_bit(DPC_RESET_HA_FW_CONTEXT,
&ha->dpc_flags);
status = QLA_ERROR;
}
}
} else {
clear_bit(DPC_RESET_HA, &ha->dpc_flags);
clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
}
ha->adapter_error_count++;
if (test_bit(AF_ONLINE, &ha->flags))
ha->isp_ops->enable_intrs(ha);
scsi_unblock_requests(ha->host);
clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
DEBUG2(printk("scsi%ld: recover adapter: %s\n", ha->host_no,
status == QLA_ERROR ? "FAILED" : "SUCCEEDED"));
return status;
}
static void qla4xxx_relogin_devices(struct iscsi_cls_session *cls_session)
{
struct iscsi_session *sess;
struct ddb_entry *ddb_entry;
struct scsi_qla_host *ha;
sess = cls_session->dd_data;
ddb_entry = sess->dd_data;
ha = ddb_entry->ha;
if (!iscsi_is_session_online(cls_session)) {
if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) {
ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
" unblock session\n", ha->host_no, __func__,
ddb_entry->fw_ddb_index);
iscsi_unblock_session(ddb_entry->sess);
} else {
/* Trigger relogin */
iscsi_session_failure(cls_session->dd_data,
ISCSI_ERR_CONN_FAILED);
}
}
}
static void qla4xxx_relogin_all_devices(struct scsi_qla_host *ha)
{
iscsi_host_for_each_session(ha->host, qla4xxx_relogin_devices);
}
void qla4xxx_wake_dpc(struct scsi_qla_host *ha)
{
if (ha->dpc_thread)
queue_work(ha->dpc_thread, &ha->dpc_work);
}
/**
* qla4xxx_do_dpc - dpc routine
* @data: in our case pointer to adapter structure
*
* This routine is a task that is schedule by the interrupt handler
* to perform the background processing for interrupts. We put it
* on a task queue that is consumed whenever the scheduler runs; that's
* so you can do anything (i.e. put the process to sleep etc). In fact,
* the mid-level tries to sleep when it reaches the driver threshold
* "host->can_queue". This can cause a panic if we were in our interrupt code.
**/
static void qla4xxx_do_dpc(struct work_struct *work)
{
struct scsi_qla_host *ha =
container_of(work, struct scsi_qla_host, dpc_work);
int status = QLA_ERROR;
DEBUG2(printk("scsi%ld: %s: DPC handler waking up."
"flags = 0x%08lx, dpc_flags = 0x%08lx\n",
ha->host_no, __func__, ha->flags, ha->dpc_flags))
/* Initialization not yet finished. Don't do anything yet. */
if (!test_bit(AF_INIT_DONE, &ha->flags))
return;
if (test_bit(AF_EEH_BUSY, &ha->flags)) {
DEBUG2(printk(KERN_INFO "scsi%ld: %s: flags = %lx\n",
ha->host_no, __func__, ha->flags));
return;
}
if (is_qla8022(ha)) {
if (test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags)) {
qla4_8xxx_idc_lock(ha);
qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE,
QLA82XX_DEV_FAILED);
qla4_8xxx_idc_unlock(ha);
ql4_printk(KERN_INFO, ha, "HW State: FAILED\n");
qla4_8xxx_device_state_handler(ha);
}
if (test_and_clear_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) {
qla4_8xxx_need_qsnt_handler(ha);
}
}
if (!test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) &&
(test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))) {
if (ql4xdontresethba) {
DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n",
ha->host_no, __func__));
clear_bit(DPC_RESET_HA, &ha->dpc_flags);
clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
goto dpc_post_reset_ha;
}
if (test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) ||
test_bit(DPC_RESET_HA, &ha->dpc_flags))
qla4xxx_recover_adapter(ha);
if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
uint8_t wait_time = RESET_INTR_TOV;
while ((readw(&ha->reg->ctrl_status) &
(CSR_SOFT_RESET | CSR_FORCE_SOFT_RESET)) != 0) {
if (--wait_time == 0)
break;
msleep(1000);
}
if (wait_time == 0)
DEBUG2(printk("scsi%ld: %s: SR|FSR "
"bit not cleared-- resetting\n",
ha->host_no, __func__));
qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
if (ql4xxx_lock_drvr_wait(ha) == QLA_SUCCESS) {
qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
status = qla4xxx_recover_adapter(ha);
}
clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
if (status == QLA_SUCCESS)
ha->isp_ops->enable_intrs(ha);
}
}
dpc_post_reset_ha:
/* ---- process AEN? --- */
if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags))
qla4xxx_process_aen(ha, PROCESS_ALL_AENS);
/* ---- Get DHCP IP Address? --- */
if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags))
qla4xxx_get_dhcp_ip_address(ha);
/* ---- link change? --- */
if (test_and_clear_bit(DPC_LINK_CHANGED, &ha->dpc_flags)) {
if (!test_bit(AF_LINK_UP, &ha->flags)) {
/* ---- link down? --- */
qla4xxx_mark_all_devices_missing(ha);
} else {
/* ---- link up? --- *
* F/W will auto login to all devices ONLY ONCE after
* link up during driver initialization and runtime
* fatal error recovery. Therefore, the driver must
* manually relogin to devices when recovering from
* connection failures, logouts, expired KATO, etc. */
qla4xxx_relogin_all_devices(ha);
}
}
}
/**
* qla4xxx_free_adapter - release the adapter
* @ha: pointer to adapter structure
**/
static void qla4xxx_free_adapter(struct scsi_qla_host *ha)
{
if (test_bit(AF_INTERRUPTS_ON, &ha->flags)) {
/* Turn-off interrupts on the card. */
ha->isp_ops->disable_intrs(ha);
}
/* Remove timer thread, if present */
if (ha->timer_active)
qla4xxx_stop_timer(ha);
/* Kill the kernel thread for this host */
if (ha->dpc_thread)
destroy_workqueue(ha->dpc_thread);
/* Kill the kernel thread for this host */
if (ha->task_wq)
destroy_workqueue(ha->task_wq);
/* Put firmware in known state */
ha->isp_ops->reset_firmware(ha);
if (is_qla8022(ha)) {
qla4_8xxx_idc_lock(ha);
qla4_8xxx_clear_drv_active(ha);
qla4_8xxx_idc_unlock(ha);
}
/* Detach interrupts */
if (test_and_clear_bit(AF_IRQ_ATTACHED, &ha->flags))
qla4xxx_free_irqs(ha);
/* free extra memory */
qla4xxx_mem_free(ha);
}
int qla4_8xxx_iospace_config(struct scsi_qla_host *ha)
{
int status = 0;
uint8_t revision_id;
unsigned long mem_base, mem_len, db_base, db_len;
struct pci_dev *pdev = ha->pdev;
status = pci_request_regions(pdev, DRIVER_NAME);
if (status) {
printk(KERN_WARNING
"scsi(%ld) Failed to reserve PIO regions (%s) "
"status=%d\n", ha->host_no, pci_name(pdev), status);
goto iospace_error_exit;
}
pci_read_config_byte(pdev, PCI_REVISION_ID, &revision_id);
DEBUG2(printk(KERN_INFO "%s: revision-id=%d\n",
__func__, revision_id));
ha->revision_id = revision_id;
/* remap phys address */
mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
mem_len = pci_resource_len(pdev, 0);
DEBUG2(printk(KERN_INFO "%s: ioremap from %lx a size of %lx\n",
__func__, mem_base, mem_len));
/* mapping of pcibase pointer */
ha->nx_pcibase = (unsigned long)ioremap(mem_base, mem_len);
if (!ha->nx_pcibase) {
printk(KERN_ERR
"cannot remap MMIO (%s), aborting\n", pci_name(pdev));
pci_release_regions(ha->pdev);
goto iospace_error_exit;
}
/* Mapping of IO base pointer, door bell read and write pointer */
/* mapping of IO base pointer */
ha->qla4_8xxx_reg =
(struct device_reg_82xx __iomem *)((uint8_t *)ha->nx_pcibase +
0xbc000 + (ha->pdev->devfn << 11));
db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */
db_len = pci_resource_len(pdev, 4);
ha->nx_db_wr_ptr = (ha->pdev->devfn == 4 ? QLA82XX_CAM_RAM_DB1 :
QLA82XX_CAM_RAM_DB2);
return 0;
iospace_error_exit:
return -ENOMEM;
}
/***
* qla4xxx_iospace_config - maps registers
* @ha: pointer to adapter structure
*
* This routines maps HBA's registers from the pci address space
* into the kernel virtual address space for memory mapped i/o.
**/
int qla4xxx_iospace_config(struct scsi_qla_host *ha)
{
unsigned long pio, pio_len, pio_flags;
unsigned long mmio, mmio_len, mmio_flags;
pio = pci_resource_start(ha->pdev, 0);
pio_len = pci_resource_len(ha->pdev, 0);
pio_flags = pci_resource_flags(ha->pdev, 0);
if (pio_flags & IORESOURCE_IO) {
if (pio_len < MIN_IOBASE_LEN) {
ql4_printk(KERN_WARNING, ha,
"Invalid PCI I/O region size\n");
pio = 0;
}
} else {
ql4_printk(KERN_WARNING, ha, "region #0 not a PIO resource\n");
pio = 0;
}
/* Use MMIO operations for all accesses. */
mmio = pci_resource_start(ha->pdev, 1);
mmio_len = pci_resource_len(ha->pdev, 1);
mmio_flags = pci_resource_flags(ha->pdev, 1);
if (!(mmio_flags & IORESOURCE_MEM)) {
ql4_printk(KERN_ERR, ha,
"region #0 not an MMIO resource, aborting\n");
goto iospace_error_exit;
}
if (mmio_len < MIN_IOBASE_LEN) {
ql4_printk(KERN_ERR, ha,
"Invalid PCI mem region size, aborting\n");
goto iospace_error_exit;
}
if (pci_request_regions(ha->pdev, DRIVER_NAME)) {
ql4_printk(KERN_WARNING, ha,
"Failed to reserve PIO/MMIO regions\n");
goto iospace_error_exit;
}
ha->pio_address = pio;
ha->pio_length = pio_len;
ha->reg = ioremap(mmio, MIN_IOBASE_LEN);
if (!ha->reg) {
ql4_printk(KERN_ERR, ha,
"cannot remap MMIO, aborting\n");
goto iospace_error_exit;
}
return 0;
iospace_error_exit:
return -ENOMEM;
}
static struct isp_operations qla4xxx_isp_ops = {
.iospace_config = qla4xxx_iospace_config,
.pci_config = qla4xxx_pci_config,
.disable_intrs = qla4xxx_disable_intrs,
.enable_intrs = qla4xxx_enable_intrs,
.start_firmware = qla4xxx_start_firmware,
.intr_handler = qla4xxx_intr_handler,
.interrupt_service_routine = qla4xxx_interrupt_service_routine,
.reset_chip = qla4xxx_soft_reset,
.reset_firmware = qla4xxx_hw_reset,
.queue_iocb = qla4xxx_queue_iocb,
.complete_iocb = qla4xxx_complete_iocb,
.rd_shdw_req_q_out = qla4xxx_rd_shdw_req_q_out,
.rd_shdw_rsp_q_in = qla4xxx_rd_shdw_rsp_q_in,
.get_sys_info = qla4xxx_get_sys_info,
};
static struct isp_operations qla4_8xxx_isp_ops = {
.iospace_config = qla4_8xxx_iospace_config,
.pci_config = qla4_8xxx_pci_config,
.disable_intrs = qla4_8xxx_disable_intrs,
.enable_intrs = qla4_8xxx_enable_intrs,
.start_firmware = qla4_8xxx_load_risc,
.intr_handler = qla4_8xxx_intr_handler,
.interrupt_service_routine = qla4_8xxx_interrupt_service_routine,
.reset_chip = qla4_8xxx_isp_reset,
.reset_firmware = qla4_8xxx_stop_firmware,
.queue_iocb = qla4_8xxx_queue_iocb,
.complete_iocb = qla4_8xxx_complete_iocb,
.rd_shdw_req_q_out = qla4_8xxx_rd_shdw_req_q_out,
.rd_shdw_rsp_q_in = qla4_8xxx_rd_shdw_rsp_q_in,
.get_sys_info = qla4_8xxx_get_sys_info,
};
uint16_t qla4xxx_rd_shdw_req_q_out(struct scsi_qla_host *ha)
{
return (uint16_t)le32_to_cpu(ha->shadow_regs->req_q_out);
}
uint16_t qla4_8xxx_rd_shdw_req_q_out(struct scsi_qla_host *ha)
{
return (uint16_t)le32_to_cpu(readl(&ha->qla4_8xxx_reg->req_q_out));
}
uint16_t qla4xxx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha)
{
return (uint16_t)le32_to_cpu(ha->shadow_regs->rsp_q_in);
}
uint16_t qla4_8xxx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha)
{
return (uint16_t)le32_to_cpu(readl(&ha->qla4_8xxx_reg->rsp_q_in));
}
static ssize_t qla4xxx_show_boot_eth_info(void *data, int type, char *buf)
{
struct scsi_qla_host *ha = data;
char *str = buf;
int rc;
switch (type) {
case ISCSI_BOOT_ETH_FLAGS:
rc = sprintf(str, "%d\n", SYSFS_FLAG_FW_SEL_BOOT);
break;
case ISCSI_BOOT_ETH_INDEX:
rc = sprintf(str, "0\n");
break;
case ISCSI_BOOT_ETH_MAC:
rc = sysfs_format_mac(str, ha->my_mac,
MAC_ADDR_LEN);
break;
default:
rc = -ENOSYS;
break;
}
return rc;
}
static mode_t qla4xxx_eth_get_attr_visibility(void *data, int type)
{
int rc;
switch (type) {
case ISCSI_BOOT_ETH_FLAGS:
case ISCSI_BOOT_ETH_MAC:
case ISCSI_BOOT_ETH_INDEX:
rc = S_IRUGO;
break;
default:
rc = 0;
break;
}
return rc;
}
static ssize_t qla4xxx_show_boot_ini_info(void *data, int type, char *buf)
{
struct scsi_qla_host *ha = data;
char *str = buf;
int rc;
switch (type) {
case ISCSI_BOOT_INI_INITIATOR_NAME:
rc = sprintf(str, "%s\n", ha->name_string);
break;
default:
rc = -ENOSYS;
break;
}
return rc;
}
static mode_t qla4xxx_ini_get_attr_visibility(void *data, int type)
{
int rc;
switch (type) {
case ISCSI_BOOT_INI_INITIATOR_NAME:
rc = S_IRUGO;
break;
default:
rc = 0;
break;
}
return rc;
}
static ssize_t
qla4xxx_show_boot_tgt_info(struct ql4_boot_session_info *boot_sess, int type,
char *buf)
{
struct ql4_conn_info *boot_conn = &boot_sess->conn_list[0];
char *str = buf;
int rc;
switch (type) {
case ISCSI_BOOT_TGT_NAME:
rc = sprintf(buf, "%s\n", (char *)&boot_sess->target_name);
break;
case ISCSI_BOOT_TGT_IP_ADDR:
if (boot_sess->conn_list[0].dest_ipaddr.ip_type == 0x1)
rc = sprintf(buf, "%pI4\n",
&boot_conn->dest_ipaddr.ip_address);
else
rc = sprintf(str, "%pI6\n",
&boot_conn->dest_ipaddr.ip_address);
break;
case ISCSI_BOOT_TGT_PORT:
rc = sprintf(str, "%d\n", boot_conn->dest_port);
break;
case ISCSI_BOOT_TGT_CHAP_NAME:
rc = sprintf(str, "%.*s\n",
boot_conn->chap.target_chap_name_length,
(char *)&boot_conn->chap.target_chap_name);
break;
case ISCSI_BOOT_TGT_CHAP_SECRET:
rc = sprintf(str, "%.*s\n",
boot_conn->chap.target_secret_length,
(char *)&boot_conn->chap.target_secret);
break;
case ISCSI_BOOT_TGT_REV_CHAP_NAME:
rc = sprintf(str, "%.*s\n",
boot_conn->chap.intr_chap_name_length,
(char *)&boot_conn->chap.intr_chap_name);
break;
case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
rc = sprintf(str, "%.*s\n",
boot_conn->chap.intr_secret_length,
(char *)&boot_conn->chap.intr_secret);
break;
case ISCSI_BOOT_TGT_FLAGS:
rc = sprintf(str, "%d\n", SYSFS_FLAG_FW_SEL_BOOT);
break;
case ISCSI_BOOT_TGT_NIC_ASSOC:
rc = sprintf(str, "0\n");
break;
default:
rc = -ENOSYS;
break;
}
return rc;
}
static ssize_t qla4xxx_show_boot_tgt_pri_info(void *data, int type, char *buf)
{
struct scsi_qla_host *ha = data;
struct ql4_boot_session_info *boot_sess = &(ha->boot_tgt.boot_pri_sess);
return qla4xxx_show_boot_tgt_info(boot_sess, type, buf);
}
static ssize_t qla4xxx_show_boot_tgt_sec_info(void *data, int type, char *buf)
{
struct scsi_qla_host *ha = data;
struct ql4_boot_session_info *boot_sess = &(ha->boot_tgt.boot_sec_sess);
return qla4xxx_show_boot_tgt_info(boot_sess, type, buf);
}
static mode_t qla4xxx_tgt_get_attr_visibility(void *data, int type)
{
int rc;
switch (type) {
case ISCSI_BOOT_TGT_NAME:
case ISCSI_BOOT_TGT_IP_ADDR:
case ISCSI_BOOT_TGT_PORT:
case ISCSI_BOOT_TGT_CHAP_NAME:
case ISCSI_BOOT_TGT_CHAP_SECRET:
case ISCSI_BOOT_TGT_REV_CHAP_NAME:
case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
case ISCSI_BOOT_TGT_NIC_ASSOC:
case ISCSI_BOOT_TGT_FLAGS:
rc = S_IRUGO;
break;
default:
rc = 0;
break;
}
return rc;
}
static void qla4xxx_boot_release(void *data)
{
struct scsi_qla_host *ha = data;
scsi_host_put(ha->host);
}
static int get_fw_boot_info(struct scsi_qla_host *ha, uint16_t ddb_index[])
{
dma_addr_t buf_dma;
uint32_t addr, pri_addr, sec_addr;
uint32_t offset;
uint16_t func_num;
uint8_t val;
uint8_t *buf = NULL;
size_t size = 13 * sizeof(uint8_t);
int ret = QLA_SUCCESS;
func_num = PCI_FUNC(ha->pdev->devfn);
ql4_printk(KERN_INFO, ha, "%s: Get FW boot info for 0x%x func %d\n",
__func__, ha->pdev->device, func_num);
if (is_qla40XX(ha)) {
if (func_num == 1) {
addr = NVRAM_PORT0_BOOT_MODE;
pri_addr = NVRAM_PORT0_BOOT_PRI_TGT;
sec_addr = NVRAM_PORT0_BOOT_SEC_TGT;
} else if (func_num == 3) {
addr = NVRAM_PORT1_BOOT_MODE;
pri_addr = NVRAM_PORT1_BOOT_PRI_TGT;
sec_addr = NVRAM_PORT1_BOOT_SEC_TGT;
} else {
ret = QLA_ERROR;
goto exit_boot_info;
}
/* Check Boot Mode */
val = rd_nvram_byte(ha, addr);
if (!(val & 0x07)) {
DEBUG2(ql4_printk(KERN_ERR, ha,
"%s: Failed Boot options : 0x%x\n",
__func__, val));
ret = QLA_ERROR;
goto exit_boot_info;
}
/* get primary valid target index */
val = rd_nvram_byte(ha, pri_addr);
if (val & BIT_7)
ddb_index[0] = (val & 0x7f);
/* get secondary valid target index */
val = rd_nvram_byte(ha, sec_addr);
if (val & BIT_7)
ddb_index[1] = (val & 0x7f);
} else if (is_qla8022(ha)) {
buf = dma_alloc_coherent(&ha->pdev->dev, size,
&buf_dma, GFP_KERNEL);
if (!buf) {
DEBUG2(ql4_printk(KERN_ERR, ha,
"%s: Unable to allocate dma buffer\n",
__func__));
ret = QLA_ERROR;
goto exit_boot_info;
}
if (ha->port_num == 0)
offset = BOOT_PARAM_OFFSET_PORT0;
else if (ha->port_num == 1)
offset = BOOT_PARAM_OFFSET_PORT1;
else {
ret = QLA_ERROR;
goto exit_boot_info_free;
}
addr = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_iscsi_param * 4) +
offset;
if (qla4xxx_get_flash(ha, buf_dma, addr,
13 * sizeof(uint8_t)) != QLA_SUCCESS) {
DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: Get Flash"
"failed\n", ha->host_no, __func__));
ret = QLA_ERROR;
goto exit_boot_info_free;
}
/* Check Boot Mode */
if (!(buf[1] & 0x07)) {
DEBUG2(ql4_printk(KERN_INFO, ha,
"Failed: Boot options : 0x%x\n",
buf[1]));
ret = QLA_ERROR;
goto exit_boot_info_free;
}
/* get primary valid target index */
if (buf[2] & BIT_7)
ddb_index[0] = buf[2] & 0x7f;
/* get secondary valid target index */
if (buf[11] & BIT_7)
ddb_index[1] = buf[11] & 0x7f;
} else {
ret = QLA_ERROR;
goto exit_boot_info;
}
DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Primary target ID %d, Secondary"
" target ID %d\n", __func__, ddb_index[0],
ddb_index[1]));
exit_boot_info_free:
dma_free_coherent(&ha->pdev->dev, size, buf, buf_dma);
exit_boot_info:
return ret;
}
/**
* qla4xxx_get_bidi_chap - Get a BIDI CHAP user and password
* @ha: pointer to adapter structure
* @username: CHAP username to be returned
* @password: CHAP password to be returned
*
* If a boot entry has BIDI CHAP enabled then we need to set the BIDI CHAP
* user and password in the sysfs entry in /sys/firmware/iscsi_boot#/.
* So from the CHAP cache find the first BIDI CHAP entry and set it
* to the boot record in sysfs.
**/
static int qla4xxx_get_bidi_chap(struct scsi_qla_host *ha, char *username,
char *password)
{
int i, ret = -EINVAL;
int max_chap_entries = 0;
struct ql4_chap_table *chap_table;
if (is_qla8022(ha))
max_chap_entries = (ha->hw.flt_chap_size / 2) /
sizeof(struct ql4_chap_table);
else
max_chap_entries = MAX_CHAP_ENTRIES_40XX;
if (!ha->chap_list) {
ql4_printk(KERN_ERR, ha, "Do not have CHAP table cache\n");
return ret;
}
mutex_lock(&ha->chap_sem);
for (i = 0; i < max_chap_entries; i++) {
chap_table = (struct ql4_chap_table *)ha->chap_list + i;
if (chap_table->cookie !=
__constant_cpu_to_le16(CHAP_VALID_COOKIE)) {
continue;
}
if (chap_table->flags & BIT_7) /* local */
continue;
if (!(chap_table->flags & BIT_6)) /* Not BIDI */
continue;
strncpy(password, chap_table->secret, QL4_CHAP_MAX_SECRET_LEN);
strncpy(username, chap_table->name, QL4_CHAP_MAX_NAME_LEN);
ret = 0;
break;
}
mutex_unlock(&ha->chap_sem);
return ret;
}
static int qla4xxx_get_boot_target(struct scsi_qla_host *ha,
struct ql4_boot_session_info *boot_sess,
uint16_t ddb_index)
{
struct ql4_conn_info *boot_conn = &boot_sess->conn_list[0];
struct dev_db_entry *fw_ddb_entry;
dma_addr_t fw_ddb_entry_dma;
uint16_t idx;
uint16_t options;
int ret = QLA_SUCCESS;
fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
&fw_ddb_entry_dma, GFP_KERNEL);
if (!fw_ddb_entry) {
DEBUG2(ql4_printk(KERN_ERR, ha,
"%s: Unable to allocate dma buffer.\n",
__func__));
ret = QLA_ERROR;
return ret;
}
if (qla4xxx_bootdb_by_index(ha, fw_ddb_entry,
fw_ddb_entry_dma, ddb_index)) {
DEBUG2(ql4_printk(KERN_ERR, ha,
"%s: Flash DDB read Failed\n", __func__));
ret = QLA_ERROR;
goto exit_boot_target;
}
/* Update target name and IP from DDB */
memcpy(boot_sess->target_name, fw_ddb_entry->iscsi_name,
min(sizeof(boot_sess->target_name),
sizeof(fw_ddb_entry->iscsi_name)));
options = le16_to_cpu(fw_ddb_entry->options);
if (options & DDB_OPT_IPV6_DEVICE) {
memcpy(&boot_conn->dest_ipaddr.ip_address,
&fw_ddb_entry->ip_addr[0], IPv6_ADDR_LEN);
} else {
boot_conn->dest_ipaddr.ip_type = 0x1;
memcpy(&boot_conn->dest_ipaddr.ip_address,
&fw_ddb_entry->ip_addr[0], IP_ADDR_LEN);
}
boot_conn->dest_port = le16_to_cpu(fw_ddb_entry->port);
/* update chap information */
idx = __le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
if (BIT_7 & le16_to_cpu(fw_ddb_entry->iscsi_options)) {
DEBUG2(ql4_printk(KERN_INFO, ha, "Setting chap\n"));
ret = qla4xxx_get_chap(ha, (char *)&boot_conn->chap.
target_chap_name,
(char *)&boot_conn->chap.target_secret,
idx);
if (ret) {
ql4_printk(KERN_ERR, ha, "Failed to set chap\n");
ret = QLA_ERROR;
goto exit_boot_target;
}
boot_conn->chap.target_chap_name_length = QL4_CHAP_MAX_NAME_LEN;
boot_conn->chap.target_secret_length = QL4_CHAP_MAX_SECRET_LEN;
}
if (BIT_4 & le16_to_cpu(fw_ddb_entry->iscsi_options)) {
DEBUG2(ql4_printk(KERN_INFO, ha, "Setting BIDI chap\n"));
ret = qla4xxx_get_bidi_chap(ha,
(char *)&boot_conn->chap.intr_chap_name,
(char *)&boot_conn->chap.intr_secret);
if (ret) {
ql4_printk(KERN_ERR, ha, "Failed to set BIDI chap\n");
ret = QLA_ERROR;
goto exit_boot_target;
}
boot_conn->chap.intr_chap_name_length = QL4_CHAP_MAX_NAME_LEN;
boot_conn->chap.intr_secret_length = QL4_CHAP_MAX_SECRET_LEN;
}
exit_boot_target:
dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
fw_ddb_entry, fw_ddb_entry_dma);
return ret;
}
static int qla4xxx_get_boot_info(struct scsi_qla_host *ha)
{
uint16_t ddb_index[2];
int ret = QLA_ERROR;
int rval;
memset(ddb_index, 0, sizeof(ddb_index));
ddb_index[0] = 0xffff;
ddb_index[1] = 0xffff;
ret = get_fw_boot_info(ha, ddb_index);
if (ret != QLA_SUCCESS) {
DEBUG2(ql4_printk(KERN_ERR, ha,
"%s: Failed to set boot info.\n", __func__));
return ret;
}
if (ddb_index[0] == 0xffff)
goto sec_target;
rval = qla4xxx_get_boot_target(ha, &(ha->boot_tgt.boot_pri_sess),
ddb_index[0]);
if (rval != QLA_SUCCESS) {
DEBUG2(ql4_printk(KERN_ERR, ha, "%s: Failed to get "
"primary target\n", __func__));
} else
ret = QLA_SUCCESS;
sec_target:
if (ddb_index[1] == 0xffff)
goto exit_get_boot_info;
rval = qla4xxx_get_boot_target(ha, &(ha->boot_tgt.boot_sec_sess),
ddb_index[1]);
if (rval != QLA_SUCCESS) {
DEBUG2(ql4_printk(KERN_ERR, ha, "%s: Failed to get "
"secondary target\n", __func__));
} else
ret = QLA_SUCCESS;
exit_get_boot_info:
return ret;
}
static int qla4xxx_setup_boot_info(struct scsi_qla_host *ha)
{
struct iscsi_boot_kobj *boot_kobj;
if (qla4xxx_get_boot_info(ha) != QLA_SUCCESS)
return 0;
ha->boot_kset = iscsi_boot_create_host_kset(ha->host->host_no);
if (!ha->boot_kset)
goto kset_free;
if (!scsi_host_get(ha->host))
goto kset_free;
boot_kobj = iscsi_boot_create_target(ha->boot_kset, 0, ha,
qla4xxx_show_boot_tgt_pri_info,
qla4xxx_tgt_get_attr_visibility,
qla4xxx_boot_release);
if (!boot_kobj)
goto put_host;
if (!scsi_host_get(ha->host))
goto kset_free;
boot_kobj = iscsi_boot_create_target(ha->boot_kset, 1, ha,
qla4xxx_show_boot_tgt_sec_info,
qla4xxx_tgt_get_attr_visibility,
qla4xxx_boot_release);
if (!boot_kobj)
goto put_host;
if (!scsi_host_get(ha->host))
goto kset_free;
boot_kobj = iscsi_boot_create_initiator(ha->boot_kset, 0, ha,
qla4xxx_show_boot_ini_info,
qla4xxx_ini_get_attr_visibility,
qla4xxx_boot_release);
if (!boot_kobj)
goto put_host;
if (!scsi_host_get(ha->host))
goto kset_free;
boot_kobj = iscsi_boot_create_ethernet(ha->boot_kset, 0, ha,
qla4xxx_show_boot_eth_info,
qla4xxx_eth_get_attr_visibility,
qla4xxx_boot_release);
if (!boot_kobj)
goto put_host;
return 0;
put_host:
scsi_host_put(ha->host);
kset_free:
iscsi_boot_destroy_kset(ha->boot_kset);
return -ENOMEM;
}
/**
* qla4xxx_create chap_list - Create CHAP list from FLASH
* @ha: pointer to adapter structure
*
* Read flash and make a list of CHAP entries, during login when a CHAP entry
* is received, it will be checked in this list. If entry exist then the CHAP
* entry index is set in the DDB. If CHAP entry does not exist in this list
* then a new entry is added in FLASH in CHAP table and the index obtained is
* used in the DDB.
**/
static void qla4xxx_create_chap_list(struct scsi_qla_host *ha)
{
int rval = 0;
uint8_t *chap_flash_data = NULL;
uint32_t offset;
dma_addr_t chap_dma;
uint32_t chap_size = 0;
if (is_qla40XX(ha))
chap_size = MAX_CHAP_ENTRIES_40XX *
sizeof(struct ql4_chap_table);
else /* Single region contains CHAP info for both
* ports which is divided into half for each port.
*/
chap_size = ha->hw.flt_chap_size / 2;
chap_flash_data = dma_alloc_coherent(&ha->pdev->dev, chap_size,
&chap_dma, GFP_KERNEL);
if (!chap_flash_data) {
ql4_printk(KERN_ERR, ha, "No memory for chap_flash_data\n");
return;
}
if (is_qla40XX(ha))
offset = FLASH_CHAP_OFFSET;
else {
offset = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_region_chap << 2);
if (ha->port_num == 1)
offset += chap_size;
}
rval = qla4xxx_get_flash(ha, chap_dma, offset, chap_size);
if (rval != QLA_SUCCESS)
goto exit_chap_list;
if (ha->chap_list == NULL)
ha->chap_list = vmalloc(chap_size);
if (ha->chap_list == NULL) {
ql4_printk(KERN_ERR, ha, "No memory for ha->chap_list\n");
goto exit_chap_list;
}
memcpy(ha->chap_list, chap_flash_data, chap_size);
exit_chap_list:
dma_free_coherent(&ha->pdev->dev, chap_size,
chap_flash_data, chap_dma);
return;
}
/**
* qla4xxx_probe_adapter - callback function to probe HBA
* @pdev: pointer to pci_dev structure
* @pci_device_id: pointer to pci_device entry
*
* This routine will probe for Qlogic 4xxx iSCSI host adapters.
* It returns zero if successful. It also initializes all data necessary for
* the driver.
**/
static int __devinit qla4xxx_probe_adapter(struct pci_dev *pdev,
const struct pci_device_id *ent)
{
int ret = -ENODEV, status;
struct Scsi_Host *host;
struct scsi_qla_host *ha;
uint8_t init_retry_count = 0;
char buf[34];
struct qla4_8xxx_legacy_intr_set *nx_legacy_intr;
uint32_t dev_state;
if (pci_enable_device(pdev))
return -1;
host = iscsi_host_alloc(&qla4xxx_driver_template, sizeof(*ha), 0);
if (host == NULL) {
printk(KERN_WARNING
"qla4xxx: Couldn't allocate host from scsi layer!\n");
goto probe_disable_device;
}
/* Clear our data area */
ha = to_qla_host(host);
memset(ha, 0, sizeof(*ha));
/* Save the information from PCI BIOS. */
ha->pdev = pdev;
ha->host = host;
ha->host_no = host->host_no;
pci_enable_pcie_error_reporting(pdev);
/* Setup Runtime configurable options */
if (is_qla8022(ha)) {
ha->isp_ops = &qla4_8xxx_isp_ops;
rwlock_init(&ha->hw_lock);
ha->qdr_sn_window = -1;
ha->ddr_mn_window = -1;
ha->curr_window = 255;
ha->func_num = PCI_FUNC(ha->pdev->devfn);
nx_legacy_intr = &legacy_intr[ha->func_num];
ha->nx_legacy_intr.int_vec_bit = nx_legacy_intr->int_vec_bit;
ha->nx_legacy_intr.tgt_status_reg =
nx_legacy_intr->tgt_status_reg;
ha->nx_legacy_intr.tgt_mask_reg = nx_legacy_intr->tgt_mask_reg;
ha->nx_legacy_intr.pci_int_reg = nx_legacy_intr->pci_int_reg;
} else {
ha->isp_ops = &qla4xxx_isp_ops;
}
/* Set EEH reset type to fundamental if required by hba */
if (is_qla8022(ha))
pdev->needs_freset = 1;
/* Configure PCI I/O space. */
ret = ha->isp_ops->iospace_config(ha);
if (ret)
goto probe_failed_ioconfig;
ql4_printk(KERN_INFO, ha, "Found an ISP%04x, irq %d, iobase 0x%p\n",
pdev->device, pdev->irq, ha->reg);
qla4xxx_config_dma_addressing(ha);
/* Initialize lists and spinlocks. */
INIT_LIST_HEAD(&ha->free_srb_q);
mutex_init(&ha->mbox_sem);
mutex_init(&ha->chap_sem);
init_completion(&ha->mbx_intr_comp);
init_completion(&ha->disable_acb_comp);
spin_lock_init(&ha->hardware_lock);
/* Allocate dma buffers */
if (qla4xxx_mem_alloc(ha)) {
ql4_printk(KERN_WARNING, ha,
"[ERROR] Failed to allocate memory for adapter\n");
ret = -ENOMEM;
goto probe_failed;
}
host->cmd_per_lun = 3;
host->max_channel = 0;
host->max_lun = MAX_LUNS - 1;
host->max_id = MAX_TARGETS;
host->max_cmd_len = IOCB_MAX_CDB_LEN;
host->can_queue = MAX_SRBS ;
host->transportt = qla4xxx_scsi_transport;
ret = scsi_init_shared_tag_map(host, MAX_SRBS);
if (ret) {
ql4_printk(KERN_WARNING, ha,
"%s: scsi_init_shared_tag_map failed\n", __func__);
goto probe_failed;
}
pci_set_drvdata(pdev, ha);
ret = scsi_add_host(host, &pdev->dev);
if (ret)
goto probe_failed;
if (is_qla8022(ha))
(void) qla4_8xxx_get_flash_info(ha);
/*
* Initialize the Host adapter request/response queues and
* firmware
* NOTE: interrupts enabled upon successful completion
*/
status = qla4xxx_initialize_adapter(ha);
while ((!test_bit(AF_ONLINE, &ha->flags)) &&
init_retry_count++ < MAX_INIT_RETRIES) {
if (is_qla8022(ha)) {
qla4_8xxx_idc_lock(ha);
dev_state = qla4_8xxx_rd_32(ha, QLA82XX_CRB_DEV_STATE);
qla4_8xxx_idc_unlock(ha);
if (dev_state == QLA82XX_DEV_FAILED) {
ql4_printk(KERN_WARNING, ha, "%s: don't retry "
"initialize adapter. H/W is in failed state\n",
__func__);
break;
}
}
DEBUG2(printk("scsi: %s: retrying adapter initialization "
"(%d)\n", __func__, init_retry_count));
if (ha->isp_ops->reset_chip(ha) == QLA_ERROR)
continue;
status = qla4xxx_initialize_adapter(ha);
}
if (!test_bit(AF_ONLINE, &ha->flags)) {
ql4_printk(KERN_WARNING, ha, "Failed to initialize adapter\n");
if (is_qla8022(ha) && ql4xdontresethba) {
/* Put the device in failed state. */
DEBUG2(printk(KERN_ERR "HW STATE: FAILED\n"));
qla4_8xxx_idc_lock(ha);
qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE,
QLA82XX_DEV_FAILED);
qla4_8xxx_idc_unlock(ha);
}
ret = -ENODEV;
goto remove_host;
}
/* Startup the kernel thread for this host adapter. */
DEBUG2(printk("scsi: %s: Starting kernel thread for "
"qla4xxx_dpc\n", __func__));
sprintf(buf, "qla4xxx_%lu_dpc", ha->host_no);
ha->dpc_thread = create_singlethread_workqueue(buf);
if (!ha->dpc_thread) {
ql4_printk(KERN_WARNING, ha, "Unable to start DPC thread!\n");
ret = -ENODEV;
goto remove_host;
}
INIT_WORK(&ha->dpc_work, qla4xxx_do_dpc);
sprintf(buf, "qla4xxx_%lu_task", ha->host_no);
ha->task_wq = alloc_workqueue(buf, WQ_MEM_RECLAIM, 1);
if (!ha->task_wq) {
ql4_printk(KERN_WARNING, ha, "Unable to start task thread!\n");
ret = -ENODEV;
goto remove_host;
}
/* For ISP-82XX, request_irqs is called in qla4_8xxx_load_risc
* (which is called indirectly by qla4xxx_initialize_adapter),
* so that irqs will be registered after crbinit but before
* mbx_intr_enable.
*/
if (!is_qla8022(ha)) {
ret = qla4xxx_request_irqs(ha);
if (ret) {
ql4_printk(KERN_WARNING, ha, "Failed to reserve "
"interrupt %d already in use.\n", pdev->irq);
goto remove_host;
}
}
pci_save_state(ha->pdev);
ha->isp_ops->enable_intrs(ha);
/* Start timer thread. */
qla4xxx_start_timer(ha, qla4xxx_timer, 1);
set_bit(AF_INIT_DONE, &ha->flags);
printk(KERN_INFO
" QLogic iSCSI HBA Driver version: %s\n"
" QLogic ISP%04x @ %s, host#=%ld, fw=%02d.%02d.%02d.%02d\n",
qla4xxx_version_str, ha->pdev->device, pci_name(ha->pdev),
ha->host_no, ha->firmware_version[0], ha->firmware_version[1],
ha->patch_number, ha->build_number);
qla4xxx_create_chap_list(ha);
if (qla4xxx_setup_boot_info(ha))
ql4_printk(KERN_ERR, ha, "%s:ISCSI boot info setup failed\n",
__func__);
qla4xxx_create_ifaces(ha);
return 0;
remove_host:
scsi_remove_host(ha->host);
probe_failed:
qla4xxx_free_adapter(ha);
probe_failed_ioconfig:
pci_disable_pcie_error_reporting(pdev);
scsi_host_put(ha->host);
probe_disable_device:
pci_disable_device(pdev);
return ret;
}
/**
* qla4xxx_prevent_other_port_reinit - prevent other port from re-initialize
* @ha: pointer to adapter structure
*
* Mark the other ISP-4xxx port to indicate that the driver is being removed,
* so that the other port will not re-initialize while in the process of
* removing the ha due to driver unload or hba hotplug.
**/
static void qla4xxx_prevent_other_port_reinit(struct scsi_qla_host *ha)
{
struct scsi_qla_host *other_ha = NULL;
struct pci_dev *other_pdev = NULL;
int fn = ISP4XXX_PCI_FN_2;
/*iscsi function numbers for ISP4xxx is 1 and 3*/
if (PCI_FUNC(ha->pdev->devfn) & BIT_1)
fn = ISP4XXX_PCI_FN_1;
other_pdev =
pci_get_domain_bus_and_slot(pci_domain_nr(ha->pdev->bus),
ha->pdev->bus->number, PCI_DEVFN(PCI_SLOT(ha->pdev->devfn),
fn));
/* Get other_ha if other_pdev is valid and state is enable*/
if (other_pdev) {
if (atomic_read(&other_pdev->enable_cnt)) {
other_ha = pci_get_drvdata(other_pdev);
if (other_ha) {
set_bit(AF_HA_REMOVAL, &other_ha->flags);
DEBUG2(ql4_printk(KERN_INFO, ha, "%s: "
"Prevent %s reinit\n", __func__,
dev_name(&other_ha->pdev->dev)));
}
}
pci_dev_put(other_pdev);
}
}
/**
* qla4xxx_remove_adapter - calback function to remove adapter.
* @pci_dev: PCI device pointer
**/
static void __devexit qla4xxx_remove_adapter(struct pci_dev *pdev)
{
struct scsi_qla_host *ha;
ha = pci_get_drvdata(pdev);
if (!is_qla8022(ha))
qla4xxx_prevent_other_port_reinit(ha);
/* destroy iface from sysfs */
qla4xxx_destroy_ifaces(ha);
if (ha->boot_kset)
iscsi_boot_destroy_kset(ha->boot_kset);
scsi_remove_host(ha->host);
qla4xxx_free_adapter(ha);
scsi_host_put(ha->host);
pci_disable_pcie_error_reporting(pdev);
pci_disable_device(pdev);
pci_set_drvdata(pdev, NULL);
}
/**
* qla4xxx_config_dma_addressing() - Configure OS DMA addressing method.
* @ha: HA context
*
* At exit, the @ha's flags.enable_64bit_addressing set to indicated
* supported addressing method.
*/
static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha)
{
int retval;
/* Update our PCI device dma_mask for full 64 bit mask */
if (pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(64)) == 0) {
if (pci_set_consistent_dma_mask(ha->pdev, DMA_BIT_MASK(64))) {
dev_dbg(&ha->pdev->dev,
"Failed to set 64 bit PCI consistent mask; "
"using 32 bit.\n");
retval = pci_set_consistent_dma_mask(ha->pdev,
DMA_BIT_MASK(32));
}
} else
retval = pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(32));
}
static int qla4xxx_slave_alloc(struct scsi_device *sdev)
{
struct iscsi_cls_session *cls_sess;
struct iscsi_session *sess;
struct ddb_entry *ddb;
int queue_depth = QL4_DEF_QDEPTH;
cls_sess = starget_to_session(sdev->sdev_target);
sess = cls_sess->dd_data;
ddb = sess->dd_data;
sdev->hostdata = ddb;
sdev->tagged_supported = 1;
if (ql4xmaxqdepth != 0 && ql4xmaxqdepth <= 0xffffU)
queue_depth = ql4xmaxqdepth;
scsi_activate_tcq(sdev, queue_depth);
return 0;
}
static int qla4xxx_slave_configure(struct scsi_device *sdev)
{
sdev->tagged_supported = 1;
return 0;
}
static void qla4xxx_slave_destroy(struct scsi_device *sdev)
{
scsi_deactivate_tcq(sdev, 1);
}
/**
* qla4xxx_del_from_active_array - returns an active srb
* @ha: Pointer to host adapter structure.
* @index: index into the active_array
*
* This routine removes and returns the srb at the specified index
**/
struct srb *qla4xxx_del_from_active_array(struct scsi_qla_host *ha,
uint32_t index)
{
struct srb *srb = NULL;
struct scsi_cmnd *cmd = NULL;
cmd = scsi_host_find_tag(ha->host, index);
if (!cmd)
return srb;
srb = (struct srb *)CMD_SP(cmd);
if (!srb)
return srb;
/* update counters */
if (srb->flags & SRB_DMA_VALID) {
ha->req_q_count += srb->iocb_cnt;
ha->iocb_cnt -= srb->iocb_cnt;
if (srb->cmd)
srb->cmd->host_scribble =
(unsigned char *)(unsigned long) MAX_SRBS;
}
return srb;
}
/**
* qla4xxx_eh_wait_on_command - waits for command to be returned by firmware
* @ha: Pointer to host adapter structure.
* @cmd: Scsi Command to wait on.
*
* This routine waits for the command to be returned by the Firmware
* for some max time.
**/
static int qla4xxx_eh_wait_on_command(struct scsi_qla_host *ha,
struct scsi_cmnd *cmd)
{
int done = 0;
struct srb *rp;
uint32_t max_wait_time = EH_WAIT_CMD_TOV;
int ret = SUCCESS;
/* Dont wait on command if PCI error is being handled
* by PCI AER driver
*/
if (unlikely(pci_channel_offline(ha->pdev)) ||
(test_bit(AF_EEH_BUSY, &ha->flags))) {
ql4_printk(KERN_WARNING, ha, "scsi%ld: Return from %s\n",
ha->host_no, __func__);
return ret;
}
do {
/* Checking to see if its returned to OS */
rp = (struct srb *) CMD_SP(cmd);
if (rp == NULL) {
done++;
break;
}
msleep(2000);
} while (max_wait_time--);
return done;
}
/**
* qla4xxx_wait_for_hba_online - waits for HBA to come online
* @ha: Pointer to host adapter structure
**/
static int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha)
{
unsigned long wait_online;
wait_online = jiffies + (HBA_ONLINE_TOV * HZ);
while (time_before(jiffies, wait_online)) {
if (adapter_up(ha))
return QLA_SUCCESS;
msleep(2000);
}
return QLA_ERROR;
}
/**
* qla4xxx_eh_wait_for_commands - wait for active cmds to finish.
* @ha: pointer to HBA
* @t: target id
* @l: lun id
*
* This function waits for all outstanding commands to a lun to complete. It
* returns 0 if all pending commands are returned and 1 otherwise.
**/
static int qla4xxx_eh_wait_for_commands(struct scsi_qla_host *ha,
struct scsi_target *stgt,
struct scsi_device *sdev)
{
int cnt;
int status = 0;
struct scsi_cmnd *cmd;
/*
* Waiting for all commands for the designated target or dev
* in the active array
*/
for (cnt = 0; cnt < ha->host->can_queue; cnt++) {
cmd = scsi_host_find_tag(ha->host, cnt);
if (cmd && stgt == scsi_target(cmd->device) &&
(!sdev || sdev == cmd->device)) {
if (!qla4xxx_eh_wait_on_command(ha, cmd)) {
status++;
break;
}
}
}
return status;
}
/**
* qla4xxx_eh_abort - callback for abort task.
* @cmd: Pointer to Linux's SCSI command structure
*
* This routine is called by the Linux OS to abort the specified
* command.
**/
static int qla4xxx_eh_abort(struct scsi_cmnd *cmd)
{
struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
unsigned int id = cmd->device->id;
unsigned int lun = cmd->device->lun;
unsigned long flags;
struct srb *srb = NULL;
int ret = SUCCESS;
int wait = 0;
ql4_printk(KERN_INFO, ha,
"scsi%ld:%d:%d: Abort command issued cmd=%p\n",
ha->host_no, id, lun, cmd);
spin_lock_irqsave(&ha->hardware_lock, flags);
srb = (struct srb *) CMD_SP(cmd);
if (!srb) {
spin_unlock_irqrestore(&ha->hardware_lock, flags);
return SUCCESS;
}
kref_get(&srb->srb_ref);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
if (qla4xxx_abort_task(ha, srb) != QLA_SUCCESS) {
DEBUG3(printk("scsi%ld:%d:%d: Abort_task mbx failed.\n",
ha->host_no, id, lun));
ret = FAILED;
} else {
DEBUG3(printk("scsi%ld:%d:%d: Abort_task mbx success.\n",
ha->host_no, id, lun));
wait = 1;
}
kref_put(&srb->srb_ref, qla4xxx_srb_compl);
/* Wait for command to complete */
if (wait) {
if (!qla4xxx_eh_wait_on_command(ha, cmd)) {
DEBUG2(printk("scsi%ld:%d:%d: Abort handler timed out\n",
ha->host_no, id, lun));
ret = FAILED;
}
}
ql4_printk(KERN_INFO, ha,
"scsi%ld:%d:%d: Abort command - %s\n",
ha->host_no, id, lun, (ret == SUCCESS) ? "succeeded" : "failed");
return ret;
}
/**
* qla4xxx_eh_device_reset - callback for target reset.
* @cmd: Pointer to Linux's SCSI command structure
*
* This routine is called by the Linux OS to reset all luns on the
* specified target.
**/
static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd)
{
struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
struct ddb_entry *ddb_entry = cmd->device->hostdata;
int ret = FAILED, stat;
if (!ddb_entry)
return ret;
ret = iscsi_block_scsi_eh(cmd);
if (ret)
return ret;
ret = FAILED;
ql4_printk(KERN_INFO, ha,
"scsi%ld:%d:%d:%d: DEVICE RESET ISSUED.\n", ha->host_no,
cmd->device->channel, cmd->device->id, cmd->device->lun);
DEBUG2(printk(KERN_INFO
"scsi%ld: DEVICE_RESET cmd=%p jiffies = 0x%lx, to=%x,"
"dpc_flags=%lx, status=%x allowed=%d\n", ha->host_no,
cmd, jiffies, cmd->request->timeout / HZ,
ha->dpc_flags, cmd->result, cmd->allowed));
/* FIXME: wait for hba to go online */
stat = qla4xxx_reset_lun(ha, ddb_entry, cmd->device->lun);
if (stat != QLA_SUCCESS) {
ql4_printk(KERN_INFO, ha, "DEVICE RESET FAILED. %d\n", stat);
goto eh_dev_reset_done;
}
if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device),
cmd->device)) {
ql4_printk(KERN_INFO, ha,
"DEVICE RESET FAILED - waiting for "
"commands.\n");
goto eh_dev_reset_done;
}
/* Send marker. */
if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun,
MM_LUN_RESET) != QLA_SUCCESS)
goto eh_dev_reset_done;
ql4_printk(KERN_INFO, ha,
"scsi(%ld:%d:%d:%d): DEVICE RESET SUCCEEDED.\n",
ha->host_no, cmd->device->channel, cmd->device->id,
cmd->device->lun);
ret = SUCCESS;
eh_dev_reset_done:
return ret;
}
/**
* qla4xxx_eh_target_reset - callback for target reset.
* @cmd: Pointer to Linux's SCSI command structure
*
* This routine is called by the Linux OS to reset the target.
**/
static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd)
{
struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
struct ddb_entry *ddb_entry = cmd->device->hostdata;
int stat, ret;
if (!ddb_entry)
return FAILED;
ret = iscsi_block_scsi_eh(cmd);
if (ret)
return ret;
starget_printk(KERN_INFO, scsi_target(cmd->device),
"WARM TARGET RESET ISSUED.\n");
DEBUG2(printk(KERN_INFO
"scsi%ld: TARGET_DEVICE_RESET cmd=%p jiffies = 0x%lx, "
"to=%x,dpc_flags=%lx, status=%x allowed=%d\n",
ha->host_no, cmd, jiffies, cmd->request->timeout / HZ,
ha->dpc_flags, cmd->result, cmd->allowed));
stat = qla4xxx_reset_target(ha, ddb_entry);
if (stat != QLA_SUCCESS) {
starget_printk(KERN_INFO, scsi_target(cmd->device),
"WARM TARGET RESET FAILED.\n");
return FAILED;
}
if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device),
NULL)) {
starget_printk(KERN_INFO, scsi_target(cmd->device),
"WARM TARGET DEVICE RESET FAILED - "
"waiting for commands.\n");
return FAILED;
}
/* Send marker. */
if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun,
MM_TGT_WARM_RESET) != QLA_SUCCESS) {
starget_printk(KERN_INFO, scsi_target(cmd->device),
"WARM TARGET DEVICE RESET FAILED - "
"marker iocb failed.\n");
return FAILED;
}
starget_printk(KERN_INFO, scsi_target(cmd->device),
"WARM TARGET RESET SUCCEEDED.\n");
return SUCCESS;
}
/**
* qla4xxx_eh_host_reset - kernel callback
* @cmd: Pointer to Linux's SCSI command structure
*
* This routine is invoked by the Linux kernel to perform fatal error
* recovery on the specified adapter.
**/
static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd)
{
int return_status = FAILED;
struct scsi_qla_host *ha;
ha = to_qla_host(cmd->device->host);
if (ql4xdontresethba) {
DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n",
ha->host_no, __func__));
return FAILED;
}
ql4_printk(KERN_INFO, ha,
"scsi(%ld:%d:%d:%d): HOST RESET ISSUED.\n", ha->host_no,
cmd->device->channel, cmd->device->id, cmd->device->lun);
if (qla4xxx_wait_for_hba_online(ha) != QLA_SUCCESS) {
DEBUG2(printk("scsi%ld:%d: %s: Unable to reset host. Adapter "
"DEAD.\n", ha->host_no, cmd->device->channel,
__func__));
return FAILED;
}
if (!test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
if (is_qla8022(ha))
set_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
else
set_bit(DPC_RESET_HA, &ha->dpc_flags);
}
if (qla4xxx_recover_adapter(ha) == QLA_SUCCESS)
return_status = SUCCESS;
ql4_printk(KERN_INFO, ha, "HOST RESET %s.\n",
return_status == FAILED ? "FAILED" : "SUCCEEDED");
return return_status;
}
static int qla4xxx_context_reset(struct scsi_qla_host *ha)
{
uint32_t mbox_cmd[MBOX_REG_COUNT];
uint32_t mbox_sts[MBOX_REG_COUNT];
struct addr_ctrl_blk_def *acb = NULL;
uint32_t acb_len = sizeof(struct addr_ctrl_blk_def);
int rval = QLA_SUCCESS;
dma_addr_t acb_dma;
acb = dma_alloc_coherent(&ha->pdev->dev,
sizeof(struct addr_ctrl_blk_def),
&acb_dma, GFP_KERNEL);
if (!acb) {
ql4_printk(KERN_ERR, ha, "%s: Unable to alloc acb\n",
__func__);
rval = -ENOMEM;
goto exit_port_reset;
}
memset(acb, 0, acb_len);
rval = qla4xxx_get_acb(ha, acb_dma, PRIMARI_ACB, acb_len);
if (rval != QLA_SUCCESS) {
rval = -EIO;
goto exit_free_acb;
}
rval = qla4xxx_disable_acb(ha);
if (rval != QLA_SUCCESS) {
rval = -EIO;
goto exit_free_acb;
}
wait_for_completion_timeout(&ha->disable_acb_comp,
DISABLE_ACB_TOV * HZ);
rval = qla4xxx_set_acb(ha, &mbox_cmd[0], &mbox_sts[0], acb_dma);
if (rval != QLA_SUCCESS) {
rval = -EIO;
goto exit_free_acb;
}
exit_free_acb:
dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk_def),
acb, acb_dma);
exit_port_reset:
DEBUG2(ql4_printk(KERN_INFO, ha, "%s %s\n", __func__,
rval == QLA_SUCCESS ? "SUCCEEDED" : "FAILED"));
return rval;
}
static int qla4xxx_host_reset(struct Scsi_Host *shost, int reset_type)
{
struct scsi_qla_host *ha = to_qla_host(shost);
int rval = QLA_SUCCESS;
if (ql4xdontresethba) {
DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Don't Reset HBA\n",
__func__));
rval = -EPERM;
goto exit_host_reset;
}
rval = qla4xxx_wait_for_hba_online(ha);
if (rval != QLA_SUCCESS) {
DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Unable to reset host "
"adapter\n", __func__));
rval = -EIO;
goto exit_host_reset;
}
if (test_bit(DPC_RESET_HA, &ha->dpc_flags))
goto recover_adapter;
switch (reset_type) {
case SCSI_ADAPTER_RESET:
set_bit(DPC_RESET_HA, &ha->dpc_flags);
break;
case SCSI_FIRMWARE_RESET:
if (!test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
if (is_qla8022(ha))
/* set firmware context reset */
set_bit(DPC_RESET_HA_FW_CONTEXT,
&ha->dpc_flags);
else {
rval = qla4xxx_context_reset(ha);
goto exit_host_reset;
}
}
break;
}
recover_adapter:
rval = qla4xxx_recover_adapter(ha);
if (rval != QLA_SUCCESS) {
DEBUG2(ql4_printk(KERN_INFO, ha, "%s: recover adapter fail\n",
__func__));
rval = -EIO;
}
exit_host_reset:
return rval;
}
/* PCI AER driver recovers from all correctable errors w/o
* driver intervention. For uncorrectable errors PCI AER
* driver calls the following device driver's callbacks
*
* - Fatal Errors - link_reset
* - Non-Fatal Errors - driver's pci_error_detected() which
* returns CAN_RECOVER, NEED_RESET or DISCONNECT.
*
* PCI AER driver calls
* CAN_RECOVER - driver's pci_mmio_enabled(), mmio_enabled
* returns RECOVERED or NEED_RESET if fw_hung
* NEED_RESET - driver's slot_reset()
* DISCONNECT - device is dead & cannot recover
* RECOVERED - driver's pci_resume()
*/
static pci_ers_result_t
qla4xxx_pci_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
{
struct scsi_qla_host *ha = pci_get_drvdata(pdev);
ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: error detected:state %x\n",
ha->host_no, __func__, state);
if (!is_aer_supported(ha))
return PCI_ERS_RESULT_NONE;
switch (state) {
case pci_channel_io_normal:
clear_bit(AF_EEH_BUSY, &ha->flags);
return PCI_ERS_RESULT_CAN_RECOVER;
case pci_channel_io_frozen:
set_bit(AF_EEH_BUSY, &ha->flags);
qla4xxx_mailbox_premature_completion(ha);
qla4xxx_free_irqs(ha);
pci_disable_device(pdev);
/* Return back all IOs */
qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
return PCI_ERS_RESULT_NEED_RESET;
case pci_channel_io_perm_failure:
set_bit(AF_EEH_BUSY, &ha->flags);
set_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags);
qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
return PCI_ERS_RESULT_DISCONNECT;
}
return PCI_ERS_RESULT_NEED_RESET;
}
/**
* qla4xxx_pci_mmio_enabled() gets called if
* qla4xxx_pci_error_detected() returns PCI_ERS_RESULT_CAN_RECOVER
* and read/write to the device still works.
**/
static pci_ers_result_t
qla4xxx_pci_mmio_enabled(struct pci_dev *pdev)
{
struct scsi_qla_host *ha = pci_get_drvdata(pdev);
if (!is_aer_supported(ha))
return PCI_ERS_RESULT_NONE;
return PCI_ERS_RESULT_RECOVERED;
}
static uint32_t qla4_8xxx_error_recovery(struct scsi_qla_host *ha)
{
uint32_t rval = QLA_ERROR;
uint32_t ret = 0;
int fn;
struct pci_dev *other_pdev = NULL;
ql4_printk(KERN_WARNING, ha, "scsi%ld: In %s\n", ha->host_no, __func__);
set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
if (test_bit(AF_ONLINE, &ha->flags)) {
clear_bit(AF_ONLINE, &ha->flags);
clear_bit(AF_LINK_UP, &ha->flags);
iscsi_host_for_each_session(ha->host, qla4xxx_fail_session);
qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
}
fn = PCI_FUNC(ha->pdev->devfn);
while (fn > 0) {
fn--;
ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Finding PCI device at "
"func %x\n", ha->host_no, __func__, fn);
/* Get the pci device given the domain, bus,
* slot/function number */
other_pdev =
pci_get_domain_bus_and_slot(pci_domain_nr(ha->pdev->bus),
ha->pdev->bus->number, PCI_DEVFN(PCI_SLOT(ha->pdev->devfn),
fn));
if (!other_pdev)
continue;
if (atomic_read(&other_pdev->enable_cnt)) {
ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Found PCI "
"func in enabled state%x\n", ha->host_no,
__func__, fn);
pci_dev_put(other_pdev);
break;
}
pci_dev_put(other_pdev);
}
/* The first function on the card, the reset owner will
* start & initialize the firmware. The other functions
* on the card will reset the firmware context
*/
if (!fn) {
ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn being reset "
"0x%x is the owner\n", ha->host_no, __func__,
ha->pdev->devfn);
qla4_8xxx_idc_lock(ha);
qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE,
QLA82XX_DEV_COLD);
qla4_8xxx_wr_32(ha, QLA82XX_CRB_DRV_IDC_VERSION,
QLA82XX_IDC_VERSION);
qla4_8xxx_idc_unlock(ha);
clear_bit(AF_FW_RECOVERY, &ha->flags);
rval = qla4xxx_initialize_adapter(ha);
qla4_8xxx_idc_lock(ha);
if (rval != QLA_SUCCESS) {
ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: "
"FAILED\n", ha->host_no, __func__);
qla4_8xxx_clear_drv_active(ha);
qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE,
QLA82XX_DEV_FAILED);
} else {
ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: "
"READY\n", ha->host_no, __func__);
qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE,
QLA82XX_DEV_READY);
/* Clear driver state register */
qla4_8xxx_wr_32(ha, QLA82XX_CRB_DRV_STATE, 0);
qla4_8xxx_set_drv_active(ha);
ret = qla4xxx_request_irqs(ha);
if (ret) {
ql4_printk(KERN_WARNING, ha, "Failed to "
"reserve interrupt %d already in use.\n",
ha->pdev->irq);
rval = QLA_ERROR;
} else {
ha->isp_ops->enable_intrs(ha);
rval = QLA_SUCCESS;
}
}
qla4_8xxx_idc_unlock(ha);
} else {
ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn 0x%x is not "
"the reset owner\n", ha->host_no, __func__,
ha->pdev->devfn);
if ((qla4_8xxx_rd_32(ha, QLA82XX_CRB_DEV_STATE) ==
QLA82XX_DEV_READY)) {
clear_bit(AF_FW_RECOVERY, &ha->flags);
rval = qla4xxx_initialize_adapter(ha);
if (rval == QLA_SUCCESS) {
ret = qla4xxx_request_irqs(ha);
if (ret) {
ql4_printk(KERN_WARNING, ha, "Failed to"
" reserve interrupt %d already in"
" use.\n", ha->pdev->irq);
rval = QLA_ERROR;
} else {
ha->isp_ops->enable_intrs(ha);
rval = QLA_SUCCESS;
}
}
qla4_8xxx_idc_lock(ha);
qla4_8xxx_set_drv_active(ha);
qla4_8xxx_idc_unlock(ha);
}
}
clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
return rval;
}
static pci_ers_result_t
qla4xxx_pci_slot_reset(struct pci_dev *pdev)
{
pci_ers_result_t ret = PCI_ERS_RESULT_DISCONNECT;
struct scsi_qla_host *ha = pci_get_drvdata(pdev);
int rc;
ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: slot_reset\n",
ha->host_no, __func__);
if (!is_aer_supported(ha))
return PCI_ERS_RESULT_NONE;
/* Restore the saved state of PCIe device -
* BAR registers, PCI Config space, PCIX, MSI,
* IOV states
*/
pci_restore_state(pdev);
/* pci_restore_state() clears the saved_state flag of the device
* save restored state which resets saved_state flag
*/
pci_save_state(pdev);
/* Initialize device or resume if in suspended state */
rc = pci_enable_device(pdev);
if (rc) {
ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Can't re-enable "
"device after reset\n", ha->host_no, __func__);
goto exit_slot_reset;
}
ha->isp_ops->disable_intrs(ha);
if (is_qla8022(ha)) {
if (qla4_8xxx_error_recovery(ha) == QLA_SUCCESS) {
ret = PCI_ERS_RESULT_RECOVERED;
goto exit_slot_reset;
} else
goto exit_slot_reset;
}
exit_slot_reset:
ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Return=%x\n"
"device after reset\n", ha->host_no, __func__, ret);
return ret;
}
static void
qla4xxx_pci_resume(struct pci_dev *pdev)
{
struct scsi_qla_host *ha = pci_get_drvdata(pdev);
int ret;
ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: pci_resume\n",
ha->host_no, __func__);
ret = qla4xxx_wait_for_hba_online(ha);
if (ret != QLA_SUCCESS) {
ql4_printk(KERN_ERR, ha, "scsi%ld: %s: the device failed to "
"resume I/O from slot/link_reset\n", ha->host_no,
__func__);
}
pci_cleanup_aer_uncorrect_error_status(pdev);
clear_bit(AF_EEH_BUSY, &ha->flags);
}
static struct pci_error_handlers qla4xxx_err_handler = {
.error_detected = qla4xxx_pci_error_detected,
.mmio_enabled = qla4xxx_pci_mmio_enabled,
.slot_reset = qla4xxx_pci_slot_reset,
.resume = qla4xxx_pci_resume,
};
static struct pci_device_id qla4xxx_pci_tbl[] = {
{
.vendor = PCI_VENDOR_ID_QLOGIC,
.device = PCI_DEVICE_ID_QLOGIC_ISP4010,
.subvendor = PCI_ANY_ID,
.subdevice = PCI_ANY_ID,
},
{
.vendor = PCI_VENDOR_ID_QLOGIC,
.device = PCI_DEVICE_ID_QLOGIC_ISP4022,
.subvendor = PCI_ANY_ID,
.subdevice = PCI_ANY_ID,
},
{
.vendor = PCI_VENDOR_ID_QLOGIC,
.device = PCI_DEVICE_ID_QLOGIC_ISP4032,
.subvendor = PCI_ANY_ID,
.subdevice = PCI_ANY_ID,
},
{
.vendor = PCI_VENDOR_ID_QLOGIC,
.device = PCI_DEVICE_ID_QLOGIC_ISP8022,
.subvendor = PCI_ANY_ID,
.subdevice = PCI_ANY_ID,
},
{0, 0},
};
MODULE_DEVICE_TABLE(pci, qla4xxx_pci_tbl);
static struct pci_driver qla4xxx_pci_driver = {
.name = DRIVER_NAME,
.id_table = qla4xxx_pci_tbl,
.probe = qla4xxx_probe_adapter,
.remove = qla4xxx_remove_adapter,
.err_handler = &qla4xxx_err_handler,
};
static int __init qla4xxx_module_init(void)
{
int ret;
/* Allocate cache for SRBs. */
srb_cachep = kmem_cache_create("qla4xxx_srbs", sizeof(struct srb), 0,
SLAB_HWCACHE_ALIGN, NULL);
if (srb_cachep == NULL) {
printk(KERN_ERR
"%s: Unable to allocate SRB cache..."
"Failing load!\n", DRIVER_NAME);
ret = -ENOMEM;
goto no_srp_cache;
}
/* Derive version string. */
strcpy(qla4xxx_version_str, QLA4XXX_DRIVER_VERSION);
if (ql4xextended_error_logging)
strcat(qla4xxx_version_str, "-debug");
qla4xxx_scsi_transport =
iscsi_register_transport(&qla4xxx_iscsi_transport);
if (!qla4xxx_scsi_transport){
ret = -ENODEV;
goto release_srb_cache;
}
ret = pci_register_driver(&qla4xxx_pci_driver);
if (ret)
goto unregister_transport;
printk(KERN_INFO "QLogic iSCSI HBA Driver\n");
return 0;
unregister_transport:
iscsi_unregister_transport(&qla4xxx_iscsi_transport);
release_srb_cache:
kmem_cache_destroy(srb_cachep);
no_srp_cache:
return ret;
}
static void __exit qla4xxx_module_exit(void)
{
pci_unregister_driver(&qla4xxx_pci_driver);
iscsi_unregister_transport(&qla4xxx_iscsi_transport);
kmem_cache_destroy(srb_cachep);
}
module_init(qla4xxx_module_init);
module_exit(qla4xxx_module_exit);
MODULE_AUTHOR("QLogic Corporation");
MODULE_DESCRIPTION("QLogic iSCSI HBA Driver");
MODULE_LICENSE("GPL");
MODULE_VERSION(QLA4XXX_DRIVER_VERSION);
Reference in a new issue View git blame Copy permalink