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gfiber / kernel / mindspeed / 46ff3b4b582e009a9a9253a8ba608d771b73604c / . / drivers / scsi / qla4xxx / ql4_os.c
blob: 4169c8baa112a41266b4a05335290f7b1fdf90fd [file] [log] [blame]
/*
* 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 <linux/inet.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 ql4xdisablesysfsboot = 1;
module_param(ql4xdisablesysfsboot, int, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(ql4xdisablesysfsboot,
"Set to disable exporting boot targets to sysfs\n"
" 0 - Export boot targets\n"
" 1 - Do not export boot targets (Default)");
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: 120 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) && !test_bit(AF_BUILD_DDB_LIST, &ha->flags))
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;
}
int qla4xxx_get_ddb_index(struct scsi_qla_host *ha, uint16_t *ddb_index)
{
uint32_t mbx_sts = 0;
uint16_t tmp_ddb_index;
int ret;
get_ddb_index:
tmp_ddb_index = find_first_zero_bit(ha->ddb_idx_map, MAX_DDB_ENTRIES);
if (tmp_ddb_index >= MAX_DDB_ENTRIES) {
DEBUG2(ql4_printk(KERN_INFO, ha,
"Free DDB index not available\n"));
ret = QLA_ERROR;
goto exit_get_ddb_index;
}
if (test_and_set_bit(tmp_ddb_index, ha->ddb_idx_map))
goto get_ddb_index;
DEBUG2(ql4_printk(KERN_INFO, ha,
"Found a free DDB index at %d\n", tmp_ddb_index));
ret = qla4xxx_req_ddb_entry(ha, tmp_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",
tmp_ddb_index);
goto get_ddb_index;
}
DEBUG2(ql4_printk(KERN_INFO, ha,
"Free FW DDB not available\n"));
}
*ddb_index = tmp_ddb_index;
exit_get_ddb_index:
return ret;
}
static int qla4xxx_match_ipaddress(struct scsi_qla_host *ha,
struct ddb_entry *ddb_entry,
char *existing_ipaddr,
char *user_ipaddr)
{
uint8_t dst_ipaddr[IPv6_ADDR_LEN];
char formatted_ipaddr[DDB_IPADDR_LEN];
int status = QLA_SUCCESS, ret = 0;
if (ddb_entry->fw_ddb_entry.options & DDB_OPT_IPV6_DEVICE) {
ret = in6_pton(user_ipaddr, strlen(user_ipaddr), dst_ipaddr,
'\0', NULL);
if (ret == 0) {
status = QLA_ERROR;
goto out_match;
}
ret = sprintf(formatted_ipaddr, "%pI6", dst_ipaddr);
} else {
ret = in4_pton(user_ipaddr, strlen(user_ipaddr), dst_ipaddr,
'\0', NULL);
if (ret == 0) {
status = QLA_ERROR;
goto out_match;
}
ret = sprintf(formatted_ipaddr, "%pI4", dst_ipaddr);
}
if (strcmp(existing_ipaddr, formatted_ipaddr))
status = QLA_ERROR;
out_match:
return status;
}
static int qla4xxx_match_fwdb_session(struct scsi_qla_host *ha,
struct iscsi_cls_conn *cls_conn)
{
int idx = 0, max_ddbs, rval;
struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
struct iscsi_session *sess, *existing_sess;
struct iscsi_conn *conn, *existing_conn;
struct ddb_entry *ddb_entry;
sess = cls_sess->dd_data;
conn = cls_conn->dd_data;
if (sess->targetname == NULL ||
conn->persistent_address == NULL ||
conn->persistent_port == 0)
return QLA_ERROR;
max_ddbs = is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
MAX_DEV_DB_ENTRIES;
for (idx = 0; idx < max_ddbs; idx++) {
ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
if (ddb_entry == NULL)
continue;
if (ddb_entry->ddb_type != FLASH_DDB)
continue;
existing_sess = ddb_entry->sess->dd_data;
existing_conn = ddb_entry->conn->dd_data;
if (existing_sess->targetname == NULL ||
existing_conn->persistent_address == NULL ||
existing_conn->persistent_port == 0)
continue;
DEBUG2(ql4_printk(KERN_INFO, ha,
"IQN = %s User IQN = %s\n",
existing_sess->targetname,
sess->targetname));
DEBUG2(ql4_printk(KERN_INFO, ha,
"IP = %s User IP = %s\n",
existing_conn->persistent_address,
conn->persistent_address));
DEBUG2(ql4_printk(KERN_INFO, ha,
"Port = %d User Port = %d\n",
existing_conn->persistent_port,
conn->persistent_port));
if (strcmp(existing_sess->targetname, sess->targetname))
continue;
rval = qla4xxx_match_ipaddress(ha, ddb_entry,
existing_conn->persistent_address,
conn->persistent_address);
if (rval == QLA_ERROR)
continue;
if (existing_conn->persistent_port != conn->persistent_port)
continue;
break;
}
if (idx == max_ddbs)
return QLA_ERROR;
DEBUG2(ql4_printk(KERN_INFO, ha,
"Match found in fwdb sessions\n"));
return QLA_SUCCESS;
}
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;
uint16_t ddb_index;
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);
ret = qla4xxx_get_ddb_index(ha, &ddb_index);
if (ret == QLA_ERROR)
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;
ddb_entry->unblock_sess = qla4xxx_unblock_ddb;
ddb_entry->ddb_change = qla4xxx_ddb_change;
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);
if (!cls_conn)
return NULL;
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 = NULL;
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;
/* Check if we have matching FW DDB, if yes then do not
* login to this target. This could cause target to logout previous
* connection
*/
ret = qla4xxx_match_fwdb_session(ha, cls_conn);
if (ret == QLA_SUCCESS) {
ql4_printk(KERN_INFO, ha,
"Session already exist in FW.\n");
ret = -EEXIST;
goto exit_conn_start;
}
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__);
ret = -ENOMEM;
goto exit_conn_start;
}
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) {
ddb_entry->unblock_sess(ddb_entry->sess);
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:
if (fw_ddb_entry)
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;
}
static void qla4xxx_copy_fwddb_param(struct scsi_qla_host *ha,
struct dev_db_entry *fw_ddb_entry,
struct iscsi_cls_session *cls_sess,
struct iscsi_cls_conn *cls_conn)
{
int buflen = 0;
struct iscsi_session *sess;
struct iscsi_conn *conn;
char ip_addr[DDB_IPADDR_LEN];
uint16_t options = 0;
sess = cls_sess->dd_data;
conn = cls_conn->dd_data;
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);
conn->persistent_port = le16_to_cpu(fw_ddb_entry->port);
sess->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
options = le16_to_cpu(fw_ddb_entry->options);
if (options & DDB_OPT_IPV6_DEVICE)
sprintf(ip_addr, "%pI6", fw_ddb_entry->ip_addr);
else
sprintf(ip_addr, "%pI4", fw_ddb_entry->ip_addr);
iscsi_set_param(cls_conn, ISCSI_PARAM_TARGET_NAME,
(char *)fw_ddb_entry->iscsi_name, buflen);
iscsi_set_param(cls_conn, ISCSI_PARAM_INITIATOR_NAME,
(char *)ha->name_string, buflen);
iscsi_set_param(cls_conn, ISCSI_PARAM_PERSISTENT_ADDRESS,
(char *)ip_addr, buflen);
}
void qla4xxx_update_session_conn_fwddb_param(struct scsi_qla_host *ha,
struct ddb_entry *ddb_entry)
{
struct iscsi_cls_session *cls_sess;
struct iscsi_cls_conn *cls_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__);
goto exit_session_conn_fwddb_param;
}
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));
goto exit_session_conn_fwddb_param;
}
cls_sess = ddb_entry->sess;
cls_conn = ddb_entry->conn;
/* Update params */
qla4xxx_copy_fwddb_param(ha, fw_ddb_entry, cls_sess, cls_conn);
exit_session_conn_fwddb_param:
if (fw_ddb_entry)
dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
fw_ddb_entry, fw_ddb_entry_dma);
}
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__);
goto exit_session_conn_param;
}
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));
goto exit_session_conn_param;
}
cls_sess = ddb_entry->sess;
sess = cls_sess->dd_data;
cls_conn = ddb_entry->conn;
conn = cls_conn->dd_data;
/* Update timers after login */
ddb_entry->default_relogin_timeout =
le16_to_cpu(fw_ddb_entry->def_timeout);
ddb_entry->default_time2wait =
le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
/* 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)));
exit_session_conn_param:
if (fw_ddb_entry)
dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
fw_ddb_entry, fw_ddb_entry_dma);
}
/*
* 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;
if (ha->fw_ddb_dma_pool)
dma_pool_destroy(ha->fw_ddb_dma_pool);
/* 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;
}
ha->fw_ddb_dma_pool = dma_pool_create("ql4_fw_ddb", &ha->pdev->dev,
DDB_DMA_BLOCK_SIZE, 8, 0);
if (ha->fw_ddb_dma_pool == NULL) {
ql4_printk(KERN_WARNING, ha,
"%s: fw_ddb_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);
}
}
}
void qla4xxx_check_relogin_flash_ddb(struct iscsi_cls_session *cls_sess)
{
struct iscsi_session *sess;
struct ddb_entry *ddb_entry;
struct scsi_qla_host *ha;
sess = cls_sess->dd_data;
ddb_entry = sess->dd_data;
ha = ddb_entry->ha;
if (!(ddb_entry->ddb_type == FLASH_DDB))
return;
if (adapter_up(ha) && !test_bit(DF_RELOGIN, &ddb_entry->flags) &&
!iscsi_is_session_online(cls_sess)) {
if (atomic_read(&ddb_entry->retry_relogin_timer) !=
INVALID_ENTRY) {
if (atomic_read(&ddb_entry->retry_relogin_timer) ==
0) {
atomic_set(&ddb_entry->retry_relogin_timer,
INVALID_ENTRY);
set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
set_bit(DF_RELOGIN, &ddb_entry->flags);
DEBUG2(ql4_printk(KERN_INFO, ha,
"%s: index [%d] login device\n",
__func__, ddb_entry->fw_ddb_index));
} else
atomic_dec(&ddb_entry->retry_relogin_timer);
}
}
/* Wait for relogin to timeout */
if (atomic_read(&ddb_entry->relogin_timer) &&
(atomic_dec_and_test(&ddb_entry->relogin_timer) != 0)) {
/*
* If the relogin times out and the device is
* still NOT ONLINE then try and relogin again.
*/
if (!iscsi_is_session_online(cls_sess)) {
/* Reset retry relogin timer */
atomic_inc(&ddb_entry->relogin_retry_count);
DEBUG2(ql4_printk(KERN_INFO, ha,
"%s: index[%d] relogin timed out-retrying"
" relogin (%d), retry (%d)\n", __func__,
ddb_entry->fw_ddb_index,
atomic_read(&ddb_entry->relogin_retry_count),
ddb_entry->default_time2wait + 4));
set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
atomic_set(&ddb_entry->retry_relogin_timer,
ddb_entry->default_time2wait + 4);
}
}
}
/**
* 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;
iscsi_host_for_each_session(ha->host, qla4xxx_check_relogin_flash_ddb);
/* 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;
if (ddb_entry->ddb_type == FLASH_DDB)
iscsi_block_session(ddb_entry->sess);
else
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, RESET_ADAPTER);
}
/* 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 */
if (ddb_entry->ddb_type == FLASH_DDB) {
if (!test_bit(DF_RELOGIN, &ddb_entry->flags))
qla4xxx_arm_relogin_timer(ddb_entry);
} else
iscsi_session_failure(cls_session->dd_data,
ISCSI_ERR_CONN_FAILED);
}
}
}
int qla4xxx_unblock_flash_ddb(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;
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);
/* Start scan target */
if (test_bit(AF_ONLINE, &ha->flags)) {
ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
" start scan\n", ha->host_no, __func__,
ddb_entry->fw_ddb_index);
scsi_queue_work(ha->host, &ddb_entry->sess->scan_work);
}
return QLA_SUCCESS;
}
int qla4xxx_unblock_ddb(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;
ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
" unblock user space session\n", ha->host_no, __func__,
ddb_entry->fw_ddb_index);
iscsi_conn_start(ddb_entry->conn);
iscsi_conn_login_event(ddb_entry->conn,
ISCSI_CONN_STATE_LOGGED_IN);
return QLA_SUCCESS;
}
static void qla4xxx_relogin_all_devices(struct scsi_qla_host *ha)
{
iscsi_host_for_each_session(ha->host, qla4xxx_relogin_devices);
}
static void qla4xxx_relogin_flash_ddb(struct iscsi_cls_session *cls_sess)
{
uint16_t relogin_timer;
struct iscsi_session *sess;
struct ddb_entry *ddb_entry;
struct scsi_qla_host *ha;
sess = cls_sess->dd_data;
ddb_entry = sess->dd_data;
ha = ddb_entry->ha;
relogin_timer = max(ddb_entry->default_relogin_timeout,
(uint16_t)RELOGIN_TOV);
atomic_set(&ddb_entry->relogin_timer, relogin_timer);
DEBUG2(ql4_printk(KERN_INFO, ha,
"scsi%ld: Relogin index [%d]. TOV=%d\n", ha->host_no,
ddb_entry->fw_ddb_index, relogin_timer));
qla4xxx_login_flash_ddb(cls_sess);
}
static void qla4xxx_dpc_relogin(struct iscsi_cls_session *cls_sess)
{
struct iscsi_session *sess;
struct ddb_entry *ddb_entry;
struct scsi_qla_host *ha;
sess = cls_sess->dd_data;
ddb_entry = sess->dd_data;
ha = ddb_entry->ha;
if (!(ddb_entry->ddb_type == FLASH_DDB))
return;
if (test_and_clear_bit(DF_RELOGIN, &ddb_entry->flags) &&
!iscsi_is_session_online(cls_sess)) {
DEBUG2(ql4_printk(KERN_INFO, ha,
"relogin issued\n"));
qla4xxx_relogin_flash_ddb(cls_sess);
}
}
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);
/* ---- relogin device? --- */
if (adapter_up(ha) &&
test_and_clear_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags)) {
iscsi_host_for_each_session(ha->host, qla4xxx_dpc_relogin);
}
/* ---- 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. */
if (test_and_clear_bit(AF_BUILD_DDB_LIST, &ha->flags)) {
qla4xxx_build_ddb_list(ha, ha->is_reset);
iscsi_host_for_each_session(ha->host,
qla4xxx_login_flash_ddb);
} else
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</