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be_main.c
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be_main.c
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/**
* Copyright (C) 2005 - 2013 Emulex
* All rights reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation. The full GNU General
* Public License is included in this distribution in the file called COPYING.
*
* Written by: Jayamohan Kallickal ([email protected])
*
* Contact Information:
*
* Emulex
* 3333 Susan Street
* Costa Mesa, CA 92626
*/
#include <linux/reboot.h>
#include <linux/delay.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
#include <linux/blkdev.h>
#include <linux/pci.h>
#include <linux/string.h>
#include <linux/kernel.h>
#include <linux/semaphore.h>
#include <linux/iscsi_boot_sysfs.h>
#include <linux/module.h>
#include <linux/bsg-lib.h>
#include <scsi/libiscsi.h>
#include <scsi/scsi_bsg_iscsi.h>
#include <scsi/scsi_netlink.h>
#include <scsi/scsi_transport_iscsi.h>
#include <scsi/scsi_transport.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi.h>
#include "be_main.h"
#include "be_iscsi.h"
#include "be_mgmt.h"
#include "be_cmds.h"
static unsigned int be_iopoll_budget = 10;
static unsigned int be_max_phys_size = 64;
static unsigned int enable_msix = 1;
MODULE_DEVICE_TABLE(pci, beiscsi_pci_id_table);
MODULE_DESCRIPTION(DRV_DESC " " BUILD_STR);
MODULE_VERSION(BUILD_STR);
MODULE_AUTHOR("Emulex Corporation");
MODULE_LICENSE("GPL");
module_param(be_iopoll_budget, int, 0);
module_param(enable_msix, int, 0);
module_param(be_max_phys_size, uint, S_IRUGO);
MODULE_PARM_DESC(be_max_phys_size,
"Maximum Size (In Kilobytes) of physically contiguous "
"memory that can be allocated. Range is 16 - 128");
#define beiscsi_disp_param(_name)\
ssize_t \
beiscsi_##_name##_disp(struct device *dev,\
struct device_attribute *attrib, char *buf) \
{ \
struct Scsi_Host *shost = class_to_shost(dev);\
struct beiscsi_hba *phba = iscsi_host_priv(shost); \
uint32_t param_val = 0; \
param_val = phba->attr_##_name;\
return snprintf(buf, PAGE_SIZE, "%d\n",\
phba->attr_##_name);\
}
#define beiscsi_change_param(_name, _minval, _maxval, _defaval)\
int \
beiscsi_##_name##_change(struct beiscsi_hba *phba, uint32_t val)\
{\
if (val >= _minval && val <= _maxval) {\
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,\
"BA_%d : beiscsi_"#_name" updated "\
"from 0x%x ==> 0x%x\n",\
phba->attr_##_name, val); \
phba->attr_##_name = val;\
return 0;\
} \
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, \
"BA_%d beiscsi_"#_name" attribute "\
"cannot be updated to 0x%x, "\
"range allowed is ["#_minval" - "#_maxval"]\n", val);\
return -EINVAL;\
}
#define beiscsi_store_param(_name) \
ssize_t \
beiscsi_##_name##_store(struct device *dev,\
struct device_attribute *attr, const char *buf,\
size_t count) \
{ \
struct Scsi_Host *shost = class_to_shost(dev);\
struct beiscsi_hba *phba = iscsi_host_priv(shost);\
uint32_t param_val = 0;\
if (!isdigit(buf[0]))\
return -EINVAL;\
if (sscanf(buf, "%i", ¶m_val) != 1)\
return -EINVAL;\
if (beiscsi_##_name##_change(phba, param_val) == 0) \
return strlen(buf);\
else \
return -EINVAL;\
}
#define beiscsi_init_param(_name, _minval, _maxval, _defval) \
int \
beiscsi_##_name##_init(struct beiscsi_hba *phba, uint32_t val) \
{ \
if (val >= _minval && val <= _maxval) {\
phba->attr_##_name = val;\
return 0;\
} \
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,\
"BA_%d beiscsi_"#_name" attribute " \
"cannot be updated to 0x%x, "\
"range allowed is ["#_minval" - "#_maxval"]\n", val);\
phba->attr_##_name = _defval;\
return -EINVAL;\
}
#define BEISCSI_RW_ATTR(_name, _minval, _maxval, _defval, _descp) \
static uint beiscsi_##_name = _defval;\
module_param(beiscsi_##_name, uint, S_IRUGO);\
MODULE_PARM_DESC(beiscsi_##_name, _descp);\
beiscsi_disp_param(_name)\
beiscsi_change_param(_name, _minval, _maxval, _defval)\
beiscsi_store_param(_name)\
beiscsi_init_param(_name, _minval, _maxval, _defval)\
DEVICE_ATTR(beiscsi_##_name, S_IRUGO | S_IWUSR,\
beiscsi_##_name##_disp, beiscsi_##_name##_store)
/*
* When new log level added update the
* the MAX allowed value for log_enable
*/
BEISCSI_RW_ATTR(log_enable, 0x00,
0xFF, 0x00, "Enable logging Bit Mask\n"
"\t\t\t\tInitialization Events : 0x01\n"
"\t\t\t\tMailbox Events : 0x02\n"
"\t\t\t\tMiscellaneous Events : 0x04\n"
"\t\t\t\tError Handling : 0x08\n"
"\t\t\t\tIO Path Events : 0x10\n"
"\t\t\t\tConfiguration Path : 0x20\n"
"\t\t\t\tiSCSI Protocol : 0x40\n");
DEVICE_ATTR(beiscsi_drvr_ver, S_IRUGO, beiscsi_drvr_ver_disp, NULL);
DEVICE_ATTR(beiscsi_adapter_family, S_IRUGO, beiscsi_adap_family_disp, NULL);
DEVICE_ATTR(beiscsi_fw_ver, S_IRUGO, beiscsi_fw_ver_disp, NULL);
DEVICE_ATTR(beiscsi_phys_port, S_IRUGO, beiscsi_phys_port_disp, NULL);
DEVICE_ATTR(beiscsi_active_session_count, S_IRUGO,
beiscsi_active_session_disp, NULL);
DEVICE_ATTR(beiscsi_free_session_count, S_IRUGO,
beiscsi_free_session_disp, NULL);
struct device_attribute *beiscsi_attrs[] = {
&dev_attr_beiscsi_log_enable,
&dev_attr_beiscsi_drvr_ver,
&dev_attr_beiscsi_adapter_family,
&dev_attr_beiscsi_fw_ver,
&dev_attr_beiscsi_active_session_count,
&dev_attr_beiscsi_free_session_count,
&dev_attr_beiscsi_phys_port,
NULL,
};
static char const *cqe_desc[] = {
"RESERVED_DESC",
"SOL_CMD_COMPLETE",
"SOL_CMD_KILLED_DATA_DIGEST_ERR",
"CXN_KILLED_PDU_SIZE_EXCEEDS_DSL",
"CXN_KILLED_BURST_LEN_MISMATCH",
"CXN_KILLED_AHS_RCVD",
"CXN_KILLED_HDR_DIGEST_ERR",
"CXN_KILLED_UNKNOWN_HDR",
"CXN_KILLED_STALE_ITT_TTT_RCVD",
"CXN_KILLED_INVALID_ITT_TTT_RCVD",
"CXN_KILLED_RST_RCVD",
"CXN_KILLED_TIMED_OUT",
"CXN_KILLED_RST_SENT",
"CXN_KILLED_FIN_RCVD",
"CXN_KILLED_BAD_UNSOL_PDU_RCVD",
"CXN_KILLED_BAD_WRB_INDEX_ERROR",
"CXN_KILLED_OVER_RUN_RESIDUAL",
"CXN_KILLED_UNDER_RUN_RESIDUAL",
"CMD_KILLED_INVALID_STATSN_RCVD",
"CMD_KILLED_INVALID_R2T_RCVD",
"CMD_CXN_KILLED_LUN_INVALID",
"CMD_CXN_KILLED_ICD_INVALID",
"CMD_CXN_KILLED_ITT_INVALID",
"CMD_CXN_KILLED_SEQ_OUTOFORDER",
"CMD_CXN_KILLED_INVALID_DATASN_RCVD",
"CXN_INVALIDATE_NOTIFY",
"CXN_INVALIDATE_INDEX_NOTIFY",
"CMD_INVALIDATED_NOTIFY",
"UNSOL_HDR_NOTIFY",
"UNSOL_DATA_NOTIFY",
"UNSOL_DATA_DIGEST_ERROR_NOTIFY",
"DRIVERMSG_NOTIFY",
"CXN_KILLED_CMND_DATA_NOT_ON_SAME_CONN",
"SOL_CMD_KILLED_DIF_ERR",
"CXN_KILLED_SYN_RCVD",
"CXN_KILLED_IMM_DATA_RCVD"
};
static int beiscsi_slave_configure(struct scsi_device *sdev)
{
blk_queue_max_segment_size(sdev->request_queue, 65536);
return 0;
}
static int beiscsi_eh_abort(struct scsi_cmnd *sc)
{
struct iscsi_cls_session *cls_session;
struct iscsi_task *aborted_task = (struct iscsi_task *)sc->SCp.ptr;
struct beiscsi_io_task *aborted_io_task;
struct iscsi_conn *conn;
struct beiscsi_conn *beiscsi_conn;
struct beiscsi_hba *phba;
struct iscsi_session *session;
struct invalidate_command_table *inv_tbl;
struct be_dma_mem nonemb_cmd;
unsigned int cid, tag, num_invalidate;
cls_session = starget_to_session(scsi_target(sc->device));
session = cls_session->dd_data;
spin_lock_bh(&session->lock);
if (!aborted_task || !aborted_task->sc) {
/* we raced */
spin_unlock_bh(&session->lock);
return SUCCESS;
}
aborted_io_task = aborted_task->dd_data;
if (!aborted_io_task->scsi_cmnd) {
/* raced or invalid command */
spin_unlock_bh(&session->lock);
return SUCCESS;
}
spin_unlock_bh(&session->lock);
/* Invalidate WRB Posted for this Task */
AMAP_SET_BITS(struct amap_iscsi_wrb, invld,
aborted_io_task->pwrb_handle->pwrb,
1);
conn = aborted_task->conn;
beiscsi_conn = conn->dd_data;
phba = beiscsi_conn->phba;
/* invalidate iocb */
cid = beiscsi_conn->beiscsi_conn_cid;
inv_tbl = phba->inv_tbl;
memset(inv_tbl, 0x0, sizeof(*inv_tbl));
inv_tbl->cid = cid;
inv_tbl->icd = aborted_io_task->psgl_handle->sgl_index;
num_invalidate = 1;
nonemb_cmd.va = pci_alloc_consistent(phba->ctrl.pdev,
sizeof(struct invalidate_commands_params_in),
&nonemb_cmd.dma);
if (nonemb_cmd.va == NULL) {
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_EH,
"BM_%d : Failed to allocate memory for"
"mgmt_invalidate_icds\n");
return FAILED;
}
nonemb_cmd.size = sizeof(struct invalidate_commands_params_in);
tag = mgmt_invalidate_icds(phba, inv_tbl, num_invalidate,
cid, &nonemb_cmd);
if (!tag) {
beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_EH,
"BM_%d : mgmt_invalidate_icds could not be"
"submitted\n");
pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
nonemb_cmd.va, nonemb_cmd.dma);
return FAILED;
}
beiscsi_mccq_compl(phba, tag, NULL, nonemb_cmd.va);
pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
nonemb_cmd.va, nonemb_cmd.dma);
return iscsi_eh_abort(sc);
}
static int beiscsi_eh_device_reset(struct scsi_cmnd *sc)
{
struct iscsi_task *abrt_task;
struct beiscsi_io_task *abrt_io_task;
struct iscsi_conn *conn;
struct beiscsi_conn *beiscsi_conn;
struct beiscsi_hba *phba;
struct iscsi_session *session;
struct iscsi_cls_session *cls_session;
struct invalidate_command_table *inv_tbl;
struct be_dma_mem nonemb_cmd;
unsigned int cid, tag, i, num_invalidate;
/* invalidate iocbs */
cls_session = starget_to_session(scsi_target(sc->device));
session = cls_session->dd_data;
spin_lock_bh(&session->lock);
if (!session->leadconn || session->state != ISCSI_STATE_LOGGED_IN) {
spin_unlock_bh(&session->lock);
return FAILED;
}
conn = session->leadconn;
beiscsi_conn = conn->dd_data;
phba = beiscsi_conn->phba;
cid = beiscsi_conn->beiscsi_conn_cid;
inv_tbl = phba->inv_tbl;
memset(inv_tbl, 0x0, sizeof(*inv_tbl) * BE2_CMDS_PER_CXN);
num_invalidate = 0;
for (i = 0; i < conn->session->cmds_max; i++) {
abrt_task = conn->session->cmds[i];
abrt_io_task = abrt_task->dd_data;
if (!abrt_task->sc || abrt_task->state == ISCSI_TASK_FREE)
continue;
if (abrt_task->sc->device->lun != abrt_task->sc->device->lun)
continue;
/* Invalidate WRB Posted for this Task */
AMAP_SET_BITS(struct amap_iscsi_wrb, invld,
abrt_io_task->pwrb_handle->pwrb,
1);
inv_tbl->cid = cid;
inv_tbl->icd = abrt_io_task->psgl_handle->sgl_index;
num_invalidate++;
inv_tbl++;
}
spin_unlock_bh(&session->lock);
inv_tbl = phba->inv_tbl;
nonemb_cmd.va = pci_alloc_consistent(phba->ctrl.pdev,
sizeof(struct invalidate_commands_params_in),
&nonemb_cmd.dma);
if (nonemb_cmd.va == NULL) {
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_EH,
"BM_%d : Failed to allocate memory for"
"mgmt_invalidate_icds\n");
return FAILED;
}
nonemb_cmd.size = sizeof(struct invalidate_commands_params_in);
memset(nonemb_cmd.va, 0, nonemb_cmd.size);
tag = mgmt_invalidate_icds(phba, inv_tbl, num_invalidate,
cid, &nonemb_cmd);
if (!tag) {
beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_EH,
"BM_%d : mgmt_invalidate_icds could not be"
" submitted\n");
pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
nonemb_cmd.va, nonemb_cmd.dma);
return FAILED;
}
beiscsi_mccq_compl(phba, tag, NULL, nonemb_cmd.va);
pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
nonemb_cmd.va, nonemb_cmd.dma);
return iscsi_eh_device_reset(sc);
}
static ssize_t beiscsi_show_boot_tgt_info(void *data, int type, char *buf)
{
struct beiscsi_hba *phba = data;
struct mgmt_session_info *boot_sess = &phba->boot_sess;
struct mgmt_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",
(int)strlen(boot_sess->target_name),
(char *)&boot_sess->target_name);
break;
case ISCSI_BOOT_TGT_IP_ADDR:
if (boot_conn->dest_ipaddr.ip_type == 0x1)
rc = sprintf(buf, "%pI4\n",
(char *)&boot_conn->dest_ipaddr.addr);
else
rc = sprintf(str, "%pI6\n",
(char *)&boot_conn->dest_ipaddr.addr);
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->negotiated_login_options.auth_data.chap.
target_chap_name_length,
(char *)&boot_conn->negotiated_login_options.
auth_data.chap.target_chap_name);
break;
case ISCSI_BOOT_TGT_CHAP_SECRET:
rc = sprintf(str, "%.*s\n",
boot_conn->negotiated_login_options.auth_data.chap.
target_secret_length,
(char *)&boot_conn->negotiated_login_options.
auth_data.chap.target_secret);
break;
case ISCSI_BOOT_TGT_REV_CHAP_NAME:
rc = sprintf(str, "%.*s\n",
boot_conn->negotiated_login_options.auth_data.chap.
intr_chap_name_length,
(char *)&boot_conn->negotiated_login_options.
auth_data.chap.intr_chap_name);
break;
case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
rc = sprintf(str, "%.*s\n",
boot_conn->negotiated_login_options.auth_data.chap.
intr_secret_length,
(char *)&boot_conn->negotiated_login_options.
auth_data.chap.intr_secret);
break;
case ISCSI_BOOT_TGT_FLAGS:
rc = sprintf(str, "2\n");
break;
case ISCSI_BOOT_TGT_NIC_ASSOC:
rc = sprintf(str, "0\n");
break;
default:
rc = -ENOSYS;
break;
}
return rc;
}
static ssize_t beiscsi_show_boot_ini_info(void *data, int type, char *buf)
{
struct beiscsi_hba *phba = data;
char *str = buf;
int rc;
switch (type) {
case ISCSI_BOOT_INI_INITIATOR_NAME:
rc = sprintf(str, "%s\n", phba->boot_sess.initiator_iscsiname);
break;
default:
rc = -ENOSYS;
break;
}
return rc;
}
static ssize_t beiscsi_show_boot_eth_info(void *data, int type, char *buf)
{
struct beiscsi_hba *phba = data;
char *str = buf;
int rc;
switch (type) {
case ISCSI_BOOT_ETH_FLAGS:
rc = sprintf(str, "2\n");
break;
case ISCSI_BOOT_ETH_INDEX:
rc = sprintf(str, "0\n");
break;
case ISCSI_BOOT_ETH_MAC:
rc = beiscsi_get_macaddr(str, phba);
break;
default:
rc = -ENOSYS;
break;
}
return rc;
}
static umode_t beiscsi_tgt_get_attr_visibility(void *data, int type)
{
umode_t 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 umode_t beiscsi_ini_get_attr_visibility(void *data, int type)
{
umode_t rc;
switch (type) {
case ISCSI_BOOT_INI_INITIATOR_NAME:
rc = S_IRUGO;
break;
default:
rc = 0;
break;
}
return rc;
}
static umode_t beiscsi_eth_get_attr_visibility(void *data, int type)
{
umode_t 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;
}
/*------------------- PCI Driver operations and data ----------------- */
static DEFINE_PCI_DEVICE_TABLE(beiscsi_pci_id_table) = {
{ PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID1) },
{ PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID2) },
{ PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID1) },
{ PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID2) },
{ PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID3) },
{ PCI_DEVICE(ELX_VENDOR_ID, OC_SKH_ID1) },
{ 0 }
};
MODULE_DEVICE_TABLE(pci, beiscsi_pci_id_table);
static struct scsi_host_template beiscsi_sht = {
.module = THIS_MODULE,
.name = "Emulex 10Gbe open-iscsi Initiator Driver",
.proc_name = DRV_NAME,
.queuecommand = iscsi_queuecommand,
.change_queue_depth = iscsi_change_queue_depth,
.slave_configure = beiscsi_slave_configure,
.target_alloc = iscsi_target_alloc,
.eh_abort_handler = beiscsi_eh_abort,
.eh_device_reset_handler = beiscsi_eh_device_reset,
.eh_target_reset_handler = iscsi_eh_session_reset,
.shost_attrs = beiscsi_attrs,
.sg_tablesize = BEISCSI_SGLIST_ELEMENTS,
.can_queue = BE2_IO_DEPTH,
.this_id = -1,
.max_sectors = BEISCSI_MAX_SECTORS,
.cmd_per_lun = BEISCSI_CMD_PER_LUN,
.use_clustering = ENABLE_CLUSTERING,
.vendor_id = SCSI_NL_VID_TYPE_PCI | BE_VENDOR_ID,
};
static struct scsi_transport_template *beiscsi_scsi_transport;
static struct beiscsi_hba *beiscsi_hba_alloc(struct pci_dev *pcidev)
{
struct beiscsi_hba *phba;
struct Scsi_Host *shost;
shost = iscsi_host_alloc(&beiscsi_sht, sizeof(*phba), 0);
if (!shost) {
dev_err(&pcidev->dev,
"beiscsi_hba_alloc - iscsi_host_alloc failed\n");
return NULL;
}
shost->dma_boundary = pcidev->dma_mask;
shost->max_id = BE2_MAX_SESSIONS;
shost->max_channel = 0;
shost->max_cmd_len = BEISCSI_MAX_CMD_LEN;
shost->max_lun = BEISCSI_NUM_MAX_LUN;
shost->transportt = beiscsi_scsi_transport;
phba = iscsi_host_priv(shost);
memset(phba, 0, sizeof(*phba));
phba->shost = shost;
phba->pcidev = pci_dev_get(pcidev);
pci_set_drvdata(pcidev, phba);
phba->interface_handle = 0xFFFFFFFF;
if (iscsi_host_add(shost, &phba->pcidev->dev))
goto free_devices;
return phba;
free_devices:
pci_dev_put(phba->pcidev);
iscsi_host_free(phba->shost);
return NULL;
}
static void beiscsi_unmap_pci_function(struct beiscsi_hba *phba)
{
if (phba->csr_va) {
iounmap(phba->csr_va);
phba->csr_va = NULL;
}
if (phba->db_va) {
iounmap(phba->db_va);
phba->db_va = NULL;
}
if (phba->pci_va) {
iounmap(phba->pci_va);
phba->pci_va = NULL;
}
}
static int beiscsi_map_pci_bars(struct beiscsi_hba *phba,
struct pci_dev *pcidev)
{
u8 __iomem *addr;
int pcicfg_reg;
addr = ioremap_nocache(pci_resource_start(pcidev, 2),
pci_resource_len(pcidev, 2));
if (addr == NULL)
return -ENOMEM;
phba->ctrl.csr = addr;
phba->csr_va = addr;
phba->csr_pa.u.a64.address = pci_resource_start(pcidev, 2);
addr = ioremap_nocache(pci_resource_start(pcidev, 4), 128 * 1024);
if (addr == NULL)
goto pci_map_err;
phba->ctrl.db = addr;
phba->db_va = addr;
phba->db_pa.u.a64.address = pci_resource_start(pcidev, 4);
if (phba->generation == BE_GEN2)
pcicfg_reg = 1;
else
pcicfg_reg = 0;
addr = ioremap_nocache(pci_resource_start(pcidev, pcicfg_reg),
pci_resource_len(pcidev, pcicfg_reg));
if (addr == NULL)
goto pci_map_err;
phba->ctrl.pcicfg = addr;
phba->pci_va = addr;
phba->pci_pa.u.a64.address = pci_resource_start(pcidev, pcicfg_reg);
return 0;
pci_map_err:
beiscsi_unmap_pci_function(phba);
return -ENOMEM;
}
static int beiscsi_enable_pci(struct pci_dev *pcidev)
{
int ret;
ret = pci_enable_device(pcidev);
if (ret) {
dev_err(&pcidev->dev,
"beiscsi_enable_pci - enable device failed\n");
return ret;
}
pci_set_master(pcidev);
if (pci_set_consistent_dma_mask(pcidev, DMA_BIT_MASK(64))) {
ret = pci_set_consistent_dma_mask(pcidev, DMA_BIT_MASK(32));
if (ret) {
dev_err(&pcidev->dev, "Could not set PCI DMA Mask\n");
pci_disable_device(pcidev);
return ret;
}
}
return 0;
}
static int be_ctrl_init(struct beiscsi_hba *phba, struct pci_dev *pdev)
{
struct be_ctrl_info *ctrl = &phba->ctrl;
struct be_dma_mem *mbox_mem_alloc = &ctrl->mbox_mem_alloced;
struct be_dma_mem *mbox_mem_align = &ctrl->mbox_mem;
int status = 0;
ctrl->pdev = pdev;
status = beiscsi_map_pci_bars(phba, pdev);
if (status)
return status;
mbox_mem_alloc->size = sizeof(struct be_mcc_mailbox) + 16;
mbox_mem_alloc->va = pci_alloc_consistent(pdev,
mbox_mem_alloc->size,
&mbox_mem_alloc->dma);
if (!mbox_mem_alloc->va) {
beiscsi_unmap_pci_function(phba);
return -ENOMEM;
}
mbox_mem_align->size = sizeof(struct be_mcc_mailbox);
mbox_mem_align->va = PTR_ALIGN(mbox_mem_alloc->va, 16);
mbox_mem_align->dma = PTR_ALIGN(mbox_mem_alloc->dma, 16);
memset(mbox_mem_align->va, 0, sizeof(struct be_mcc_mailbox));
spin_lock_init(&ctrl->mbox_lock);
spin_lock_init(&phba->ctrl.mcc_lock);
spin_lock_init(&phba->ctrl.mcc_cq_lock);
return status;
}
/**
* beiscsi_get_params()- Set the config paramters
* @phba: ptr device priv structure
**/
static void beiscsi_get_params(struct beiscsi_hba *phba)
{
uint32_t total_cid_count = 0;
uint32_t total_icd_count = 0;
uint8_t ulp_num = 0;
total_cid_count = BEISCSI_GET_CID_COUNT(phba, BEISCSI_ULP0) +
BEISCSI_GET_CID_COUNT(phba, BEISCSI_ULP1);
for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {
uint32_t align_mask = 0;
uint32_t icd_post_per_page = 0;
uint32_t icd_count_unavailable = 0;
uint32_t icd_start = 0, icd_count = 0;
uint32_t icd_start_align = 0, icd_count_align = 0;
if (test_bit(ulp_num, &phba->fw_config.ulp_supported)) {
icd_start = phba->fw_config.iscsi_icd_start[ulp_num];
icd_count = phba->fw_config.iscsi_icd_count[ulp_num];
/* Get ICD count that can be posted on each page */
icd_post_per_page = (PAGE_SIZE / (BE2_SGE *
sizeof(struct iscsi_sge)));
align_mask = (icd_post_per_page - 1);
/* Check if icd_start is aligned ICD per page posting */
if (icd_start % icd_post_per_page) {
icd_start_align = ((icd_start +
icd_post_per_page) &
~(align_mask));
phba->fw_config.
iscsi_icd_start[ulp_num] =
icd_start_align;
}
icd_count_align = (icd_count & ~align_mask);
/* ICD discarded in the process of alignment */
if (icd_start_align)
icd_count_unavailable = ((icd_start_align -
icd_start) +
(icd_count -
icd_count_align));
/* Updated ICD count available */
phba->fw_config.iscsi_icd_count[ulp_num] = (icd_count -
icd_count_unavailable);
beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
"BM_%d : Aligned ICD values\n"
"\t ICD Start : %d\n"
"\t ICD Count : %d\n"
"\t ICD Discarded : %d\n",
phba->fw_config.
iscsi_icd_start[ulp_num],
phba->fw_config.
iscsi_icd_count[ulp_num],
icd_count_unavailable);
break;
}
}
total_icd_count = phba->fw_config.iscsi_icd_count[ulp_num];
phba->params.ios_per_ctrl = (total_icd_count -
(total_cid_count +
BE2_TMFS + BE2_NOPOUT_REQ));
phba->params.cxns_per_ctrl = total_cid_count;
phba->params.asyncpdus_per_ctrl = total_cid_count;
phba->params.icds_per_ctrl = total_icd_count;
phba->params.num_sge_per_io = BE2_SGE;
phba->params.defpdu_hdr_sz = BE2_DEFPDU_HDR_SZ;
phba->params.defpdu_data_sz = BE2_DEFPDU_DATA_SZ;
phba->params.eq_timer = 64;
phba->params.num_eq_entries = 1024;
phba->params.num_cq_entries = 1024;
phba->params.wrbs_per_cxn = 256;
}
static void hwi_ring_eq_db(struct beiscsi_hba *phba,
unsigned int id, unsigned int clr_interrupt,
unsigned int num_processed,
unsigned char rearm, unsigned char event)
{
u32 val = 0;
val |= id & DB_EQ_RING_ID_MASK;
if (rearm)
val |= 1 << DB_EQ_REARM_SHIFT;
if (clr_interrupt)
val |= 1 << DB_EQ_CLR_SHIFT;
if (event)
val |= 1 << DB_EQ_EVNT_SHIFT;
val |= num_processed << DB_EQ_NUM_POPPED_SHIFT;
iowrite32(val, phba->db_va + DB_EQ_OFFSET);
}
/**
* be_isr_mcc - The isr routine of the driver.
* @irq: Not used
* @dev_id: Pointer to host adapter structure
*/
static irqreturn_t be_isr_mcc(int irq, void *dev_id)
{
struct beiscsi_hba *phba;
struct be_eq_entry *eqe = NULL;
struct be_queue_info *eq;
struct be_queue_info *mcc;
unsigned int num_eq_processed;
struct be_eq_obj *pbe_eq;
unsigned long flags;
pbe_eq = dev_id;
eq = &pbe_eq->q;
phba = pbe_eq->phba;
mcc = &phba->ctrl.mcc_obj.cq;
eqe = queue_tail_node(eq);
num_eq_processed = 0;
while (eqe->dw[offsetof(struct amap_eq_entry, valid) / 32]
& EQE_VALID_MASK) {
if (((eqe->dw[offsetof(struct amap_eq_entry,
resource_id) / 32] &
EQE_RESID_MASK) >> 16) == mcc->id) {
spin_lock_irqsave(&phba->isr_lock, flags);
pbe_eq->todo_mcc_cq = true;
spin_unlock_irqrestore(&phba->isr_lock, flags);
}
AMAP_SET_BITS(struct amap_eq_entry, valid, eqe, 0);
queue_tail_inc(eq);
eqe = queue_tail_node(eq);
num_eq_processed++;
}
if (pbe_eq->todo_mcc_cq)
queue_work(phba->wq, &pbe_eq->work_cqs);
if (num_eq_processed)
hwi_ring_eq_db(phba, eq->id, 1, num_eq_processed, 1, 1);
return IRQ_HANDLED;
}
/**
* be_isr_msix - The isr routine of the driver.
* @irq: Not used
* @dev_id: Pointer to host adapter structure
*/
static irqreturn_t be_isr_msix(int irq, void *dev_id)
{
struct beiscsi_hba *phba;
struct be_eq_entry *eqe = NULL;
struct be_queue_info *eq;
struct be_queue_info *cq;
unsigned int num_eq_processed;
struct be_eq_obj *pbe_eq;
unsigned long flags;
pbe_eq = dev_id;
eq = &pbe_eq->q;
cq = pbe_eq->cq;
eqe = queue_tail_node(eq);
phba = pbe_eq->phba;
num_eq_processed = 0;
if (blk_iopoll_enabled) {
while (eqe->dw[offsetof(struct amap_eq_entry, valid) / 32]
& EQE_VALID_MASK) {
if (!blk_iopoll_sched_prep(&pbe_eq->iopoll))
blk_iopoll_sched(&pbe_eq->iopoll);
AMAP_SET_BITS(struct amap_eq_entry, valid, eqe, 0);
queue_tail_inc(eq);
eqe = queue_tail_node(eq);
num_eq_processed++;
}
} else {
while (eqe->dw[offsetof(struct amap_eq_entry, valid) / 32]
& EQE_VALID_MASK) {
spin_lock_irqsave(&phba->isr_lock, flags);
pbe_eq->todo_cq = true;
spin_unlock_irqrestore(&phba->isr_lock, flags);
AMAP_SET_BITS(struct amap_eq_entry, valid, eqe, 0);
queue_tail_inc(eq);
eqe = queue_tail_node(eq);
num_eq_processed++;
}
if (pbe_eq->todo_cq)
queue_work(phba->wq, &pbe_eq->work_cqs);
}
if (num_eq_processed)
hwi_ring_eq_db(phba, eq->id, 1, num_eq_processed, 0, 1);
return IRQ_HANDLED;
}
/**
* be_isr - The isr routine of the driver.
* @irq: Not used
* @dev_id: Pointer to host adapter structure
*/
static irqreturn_t be_isr(int irq, void *dev_id)
{
struct beiscsi_hba *phba;
struct hwi_controller *phwi_ctrlr;
struct hwi_context_memory *phwi_context;
struct be_eq_entry *eqe = NULL;
struct be_queue_info *eq;
struct be_queue_info *cq;
struct be_queue_info *mcc;
unsigned long flags, index;
unsigned int num_mcceq_processed, num_ioeq_processed;
struct be_ctrl_info *ctrl;
struct be_eq_obj *pbe_eq;
int isr;
phba = dev_id;
ctrl = &phba->ctrl;
isr = ioread32(ctrl->csr + CEV_ISR0_OFFSET +
(PCI_FUNC(ctrl->pdev->devfn) * CEV_ISR_SIZE));
if (!isr)
return IRQ_NONE;
phwi_ctrlr = phba->phwi_ctrlr;
phwi_context = phwi_ctrlr->phwi_ctxt;
pbe_eq = &phwi_context->be_eq[0];
eq = &phwi_context->be_eq[0].q;
mcc = &phba->ctrl.mcc_obj.cq;
index = 0;
eqe = queue_tail_node(eq);
num_ioeq_processed = 0;
num_mcceq_processed = 0;
if (blk_iopoll_enabled) {
while (eqe->dw[offsetof(struct amap_eq_entry, valid) / 32]
& EQE_VALID_MASK) {
if (((eqe->dw[offsetof(struct amap_eq_entry,
resource_id) / 32] &
EQE_RESID_MASK) >> 16) == mcc->id) {
spin_lock_irqsave(&phba->isr_lock, flags);
pbe_eq->todo_mcc_cq = true;
spin_unlock_irqrestore(&phba->isr_lock, flags);
num_mcceq_processed++;
} else {
if (!blk_iopoll_sched_prep(&pbe_eq->iopoll))
blk_iopoll_sched(&pbe_eq->iopoll);
num_ioeq_processed++;
}
AMAP_SET_BITS(struct amap_eq_entry, valid, eqe, 0);
queue_tail_inc(eq);
eqe = queue_tail_node(eq);
}
if (num_ioeq_processed || num_mcceq_processed) {
if (pbe_eq->todo_mcc_cq)
queue_work(phba->wq, &pbe_eq->work_cqs);
if ((num_mcceq_processed) && (!num_ioeq_processed))
hwi_ring_eq_db(phba, eq->id, 0,
(num_ioeq_processed +
num_mcceq_processed) , 1, 1);
else
hwi_ring_eq_db(phba, eq->id, 0,
(num_ioeq_processed +
num_mcceq_processed), 0, 1);
return IRQ_HANDLED;
} else
return IRQ_NONE;
} else {
cq = &phwi_context->be_cq[0];
while (eqe->dw[offsetof(struct amap_eq_entry, valid) / 32]
& EQE_VALID_MASK) {
if (((eqe->dw[offsetof(struct amap_eq_entry,
resource_id) / 32] &
EQE_RESID_MASK) >> 16) != cq->id) {
spin_lock_irqsave(&phba->isr_lock, flags);
pbe_eq->todo_mcc_cq = true;