/*
* This file is part of the Emulex Linux Device Driver for Enterprise iSCSI
* Host Bus Adapters. Refer to the README file included with this package
* for driver version and adapter compatibility.
*
* Copyright (c) 2018 Broadcom. All Rights Reserved.
* The term “Broadcom” refers to Broadcom Inc. and/or its subsidiaries.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License as published
* by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful. ALL EXPRESS
* OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY
* IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE,
* OR NON-INFRINGEMENT, ARE DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH
* DISCLAIMERS ARE HELD TO BE LEGALLY INVALID.
* See the GNU General Public License for more details, a copy of which
* can be found in the file COPYING included with this package.
*
* Contact Information:
* [email protected]
*
*/
#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 <linux/irq_poll.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_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)\
static 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); \
return snprintf(buf, PAGE_SIZE, "%d\n",\
phba->attr_##_name);\
}
#define beiscsi_change_param(_name, _minval, _maxval, _defaval)\
static 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) \
static 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) \
static 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)\
static DEVICE_ATTR(beiscsi_##_name, S_IRUGO | S_IWUSR,\
beiscsi_##_name##_disp, beiscsi_##_name##_store)
/*
* When new log level added update 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");
static DEVICE_ATTR(beiscsi_drvr_ver, S_IRUGO, beiscsi_drvr_ver_disp, NULL);
static DEVICE_ATTR(beiscsi_adapter_family, S_IRUGO, beiscsi_adap_family_disp, NULL);
static DEVICE_ATTR(beiscsi_fw_ver, S_IRUGO, beiscsi_fw_ver_disp, NULL);
static DEVICE_ATTR(beiscsi_phys_port, S_IRUGO, beiscsi_phys_port_disp, NULL);
static DEVICE_ATTR(beiscsi_active_session_count, S_IRUGO,
beiscsi_active_session_disp, NULL);
static DEVICE_ATTR(beiscsi_free_session_count, S_IRUGO,
beiscsi_free_session_disp, NULL);
static struct attribute *beiscsi_attrs[] = {
&dev_attr_beiscsi_log_enable.attr,
&dev_attr_beiscsi_drvr_ver.attr,
&dev_attr_beiscsi_adapter_family.attr,
&dev_attr_beiscsi_fw_ver.attr,
&dev_attr_beiscsi_active_session_count.attr,
&dev_attr_beiscsi_free_session_count.attr,
&dev_attr_beiscsi_phys_port.attr,
NULL,
};
ATTRIBUTE_GROUPS(beiscsi);
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_eh_abort(struct scsi_cmnd *sc)
{
struct iscsi_task *abrt_task = iscsi_cmd(sc)->task;
struct iscsi_cls_session *cls_session;
struct beiscsi_io_task *abrt_io_task;
struct beiscsi_conn *beiscsi_conn;
struct iscsi_session *session;
struct invldt_cmd_tbl inv_tbl;
struct beiscsi_hba *phba;
struct iscsi_conn *conn;
int rc;
cls_session = starget_to_session(scsi_target(sc->device));
session = cls_session->dd_data;
completion_check:
/* check if we raced, task just got cleaned up under us */
spin_lock_bh(&session->back_lock);
if (!abrt_task || !abrt_task->sc) {
spin_unlock_bh(&session->back_lock);
return SUCCESS;
}
/* get a task ref till FW processes the req for the ICD used */
if (!iscsi_get_task(abrt_task)) {
spin_unlock(&session->back_lock);
/* We are just about to call iscsi_free_task so wait for it. */
udelay(5);
goto completion_check;
}
abrt_io_task = abrt_task->dd_data;
conn = abrt_task->conn;
beiscsi_conn = conn->dd_data;
phba = beiscsi_conn->phba;
/* mark WRB invalid which have been not processed by FW yet */
if (is_chip_be2_be3r(phba)) {
AMAP_SET_BITS(struct amap_iscsi_wrb, invld,
abrt_io_task->pwrb_handle->pwrb, 1);
} else {
AMAP_SET_BITS(struct amap_iscsi_wrb_v2, invld,
abrt_io_task->pwrb_handle->pwrb, 1);
}
inv_tbl.cid = beiscsi_conn->beiscsi_conn_cid;
inv_tbl.icd = abrt_io_task->psgl_handle->sgl_index;
spin_unlock_bh(&session->back_lock);
rc = beiscsi_mgmt_invalidate_icds(phba, &inv_tbl, 1);
iscsi_put_task(abrt_task);
if (rc) {
beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_EH,
"BM_%d : sc %p invalidation failed %d\n",
sc, rc);
return FAILED;
}
return iscsi_eh_abort(sc);
}
static int beiscsi_eh_device_reset(struct scsi_cmnd *sc)
{
struct beiscsi_invldt_cmd_tbl {
struct invldt_cmd_tbl tbl[BE_INVLDT_CMD_TBL_SZ];
struct iscsi_task *task[BE_INVLDT_CMD_TBL_SZ];
} *inv_tbl;
struct iscsi_cls_session *cls_session;
struct beiscsi_conn *beiscsi_conn;
struct beiscsi_io_task *io_task;
struct iscsi_session *session;
struct beiscsi_hba *phba;
struct iscsi_conn *conn;
struct iscsi_task *task;
unsigned int i, nents;
int rc, more = 0;
cls_session = starget_to_session(scsi_target(sc->device));
session = cls_session->dd_data;
spin_lock_bh(&session->frwd_lock);
if (!session->leadconn || session->state != ISCSI_STATE_LOGGED_IN) {
spin_unlock_bh(&session->frwd_lock);
return FAILED;
}
conn = session->leadconn;
beiscsi_conn = conn->dd_data;
phba = beiscsi_conn->phba;
inv_tbl = kzalloc(sizeof(*inv_tbl), GFP_ATOMIC);
if (!inv_tbl) {
spin_unlock_bh(&session->frwd_lock);
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_EH,
"BM_%d : invldt_cmd_tbl alloc failed\n");
return FAILED;
}
nents = 0;
/* take back_lock to prevent task from getting cleaned up under us */
spin_lock(&session->back_lock);
for (i = 0; i < conn->session->cmds_max; i++) {
task = conn->session->cmds[i];
if (!task->sc)
continue;
if (sc->device->lun != task->sc->device->lun)
continue;
/**
* Can't fit in more cmds? Normally this won't happen b'coz
* BEISCSI_CMD_PER_LUN is same as BE_INVLDT_CMD_TBL_SZ.
*/
if (nents == BE_INVLDT_CMD_TBL_SZ) {
more = 1;
break;
}
/* get a task ref till FW processes the req for the ICD used */
if (!iscsi_get_task(task)) {
/*
* The task has completed in the driver and is
* completing in libiscsi. Just ignore it here. When we
* call iscsi_eh_device_reset, it will wait for us.
*/
continue;
}
io_task = task->dd_data;
/* mark WRB invalid which have been not processed by FW yet */
if (is_chip_be2_be3r(phba)) {
AMAP_SET_BITS(struct amap_iscsi_wrb, invld,
io_task->pwrb_handle->pwrb, 1);
} else {
AMAP_SET_BITS(struct amap_iscsi_wrb_v2, invld,
io_task->pwrb_handle->pwrb, 1);
}
inv_tbl->tbl[nents].cid = beiscsi_conn->beiscsi_conn_cid;
inv_tbl->tbl[nents].icd = io_task->psgl_handle->sgl_index;
inv_tbl->task[nents] = task;
nents++;
}
spin_unlock(&session->back_lock);
spin_unlock_bh(&session->frwd_lock);
rc = SUCCESS;
if (!nents)
goto end_reset;
if (more) {
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_EH,
"BM_%d : number of cmds exceeds size of invalidation table\n");
rc = FAILED;
goto end_reset;
}
if (beiscsi_mgmt_invalidate_icds(phba, &inv_tbl->tbl[0], nents)) {
beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_EH,
"BM_%d : cid %u scmds invalidation failed\n",
beiscsi_conn->beiscsi_conn_cid);
rc = FAILED;
}
end_reset:
for (i = 0; i < nents; i++)
iscsi_put_task(inv_tbl->task[i]);
kfree(inv_tbl);
if (rc == SUCCESS)
rc = iscsi_eh_device_reset(sc);
return rc;
}
/*------------------- PCI Driver operations and data ----------------- */
static const struct pci_device_id 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 const 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 = scsi_change_queue_depth,
.target_alloc = iscsi_target_alloc,
.eh_timed_out = iscsi_eh_cmd_timed_out,
.eh_abort_handler = beiscsi_eh_abort,
.eh_device_reset_handler = beiscsi_eh_device_reset,
.eh_target_reset_handler = iscsi_eh_session_reset,
.shost_groups = beiscsi_groups,
.sg_tablesize = BEISCSI_SGLIST_ELEMENTS,
.can_queue = BE2_IO_DEPTH,
.this_id = -1,
.max_sectors = BEISCSI_MAX_SECTORS,
.max_segment_size = 65536,
.cmd_per_lun = BEISCSI_CMD_PER_LUN,
.vendor_id = SCSI_NL_VID_TYPE_PCI | BE_VENDOR_ID,
.track_queue_depth = 1,
.cmd_size = sizeof(struct iscsi_cmd),
};
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->max_id = BE2_MAX_SESSIONS - 1;
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;
return phba;
}
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(pci_resource_start(pcidev, 2),
pci_resource_len(pcidev, 2));
if (addr == NULL)
return -ENOMEM;
phba->ctrl.csr = addr;
phba->csr_va = addr;
addr = ioremap(pci_resource_start(pcidev, 4), 128 * 1024);
if (addr == NULL)
goto pci_map_err;
phba->ctrl.db = addr;
phba->db_va = addr;
if (phba->generation == BE_GEN2)
pcicfg_reg = 1;
else
pcicfg_reg = 0;
addr = ioremap(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;
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;
}
ret = pci_request_regions(pcidev, DRV_NAME);
if (ret) {
dev_err(&pcidev->dev,
"beiscsi_enable_pci - request region failed\n");
goto pci_dev_disable;
}
pci_set_master(pcidev);
ret = dma_set_mask_and_coherent(&pcidev->dev, DMA_BIT_MASK(64));
if (ret) {
ret = dma_set_mask_and_coherent(&pcidev->dev, DMA_BIT_MASK(32));
if (ret) {
dev_err(&pcidev->dev, "Could not set PCI DMA Mask\n");
goto pci_region_release;
}
}
return 0;
pci_region_release:
pci_release_regions(pcidev);
pci_dev_disable:
pci_disable_device(pcidev);
return ret;
}
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 = dma_alloc_coherent(&pdev->dev,
mbox_mem_alloc->size, &mbox_mem_alloc->dma, GFP_KERNEL);
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));
mutex_init(&ctrl->mbox_lock);
spin_lock_init(&phba->ctrl.mcc_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.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.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;
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;
/* Setting lower order EQ_ID Bits */
val |= (id & DB_EQ_RING_ID_LOW_MASK);
/* Setting Higher order EQ_ID Bits */
val |= (((id >> DB_EQ_HIGH_FEILD_SHIFT) &
DB_EQ_RING_ID_HIGH_MASK)
<< DB_EQ_HIGH_SET_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;
struct be_queue_info *eq;
struct be_queue_info *mcc;
unsigned int mcc_events;
struct be_eq_obj *pbe_eq;
pbe_eq = dev_id;
eq = &pbe_eq->q;
phba = pbe_eq->phba;
mcc = &phba->ctrl.mcc_obj.cq;
eqe = queue_tail_node(eq);
mcc_events = 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) {
mcc_events++;
}
AMAP_SET_BITS(struct amap_eq_entry, valid, eqe, 0);
queue_tail_inc(eq);
eqe = queue_tail_node(eq);
}
if (mcc_events) {
queue_work(phba->wq, &pbe_eq->mcc_work);
hwi_ring_eq_db(phba, eq->id, 1, mcc_events, 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_queue_info *eq;
struct be_eq_obj *pbe_eq;
pbe_eq = dev_id;
eq = &pbe_eq->q;
phba = pbe_eq->phba;
/* disable interrupt till iopoll completes */
hwi_ring_eq_db(phba, eq->id, 1, 0, 0, 1);
irq_poll_sched(&pbe_eq->iopoll);
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;
struct be_queue_info *eq;
struct be_queue_info *mcc;
unsigned int mcc_events, io_events;
struct be_ctrl_info *ctrl;
struct be_eq_obj *pbe_eq;
int isr, rearm;
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;
eqe = queue_tail_node(eq);
io_events = 0;
mcc_events = 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)
mcc_events++;
else
io_events++;
AMAP_SET_BITS(struct amap_eq_entry, valid, eqe, 0);
queue_tail_inc(eq);
eqe = queue_tail_node(eq);
}
if (!io_events && !mcc_events)
return IRQ_NONE;
/* no need to rearm if interrupt is only for IOs */
rearm = 0;
if (mcc_events) {
queue_work(phba->wq, &pbe_eq->mcc_work);
/* rearm for MCCQ */
rearm = 1;
}
if (io_events)
irq_poll_sched(&pbe_eq->iopoll);
hwi_ring_eq_db(phba, eq->id, 0, (io_events + mcc_events), rearm, 1);
return IRQ_HANDLED;
}
static void beiscsi_free_irqs(struct beiscsi_hba *phba)
{
struct hwi_context_memory *phwi_context;
int i;
if (!phba->pcidev->msix_enabled) {
if (phba->pcidev->irq)
free_irq(phba->pcidev->irq, phba);
return;
}
phwi_context = phba->phwi_ctrlr->phwi_ctxt;
for (i = 0; i <= phba->num_cpus; i++) {
free_irq(pci_irq_vector(phba->pcidev, i),
&phwi_context->be_eq[i]);
kfree(phba->msi_name[i]);
}
}
static int beiscsi_init_irqs(struct beiscsi_hba *phba)
{
struct pci_dev *pcidev = phba->pcidev;
struct hwi_controller *phwi_ctrlr;
struct hwi_context_memory *phwi_context;
int ret, i, j;
phwi_ctrlr = phba->phwi_ctrlr;
phwi_context = phwi_ctrlr->phwi_ctxt;
if (pcidev->msix_enabled) {
for (i = 0; i < phba->num_cpus; i++) {
phba->msi_name[i] = kasprintf(GFP_KERNEL,
"beiscsi_%02x_%02x",
phba->shost->host_no, i);
if (!phba->msi_name[i]) {
ret = -ENOMEM;
goto free_msix_irqs;
}
ret = request_irq(pci_irq_vector(pcidev, i),
be_isr_msix, 0, phba->msi_name[i],
&phwi_context->be_eq[i]);
if (ret) {
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
"BM_%d : %s-Failed to register msix for i = %d\n",
__func__, i);
kfree(phba->msi_name[i]);
goto free_msix_irqs;
}
}
phba->msi_name[i] = kasprintf(GFP_KERNEL, "beiscsi_mcc_%02x",
phba->shost->host_no);
if (!phba->msi_name[i]) {
ret = -ENOMEM;
goto free_msix_irqs;
}
ret = request_irq(pci_irq_vector(pcidev, i), be_isr_mcc, 0,
phba->msi_name[i], &phwi_context->be_eq[i]);
if (ret) {
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
"BM_%d : %s-Failed to register beiscsi_msix_mcc\n",
__func__);
kfree(phba->msi_name[i]);
goto free_msix_irqs;
}
} else {
ret = request_irq(pcidev->irq, be_isr, IRQF_SHARED,
"beiscsi", phba);
if (ret) {
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
"BM_%d : %s-Failed to register irq\n",
__func__);
return ret;
}
}
return 0;
free_msix_irqs:
for (j = i - 1; j >= 0; j--) {
free_irq(pci_irq_vector(pcidev, i), &phwi_context->be_eq[j]);
kfree(phba->msi_name[j]);
}
return ret;
}
void hwi_ring_cq_db(struct beiscsi_hba *phba,
unsigned int id, unsigned int num_processed,
unsigned char rearm)
{
u32 val = 0;
if (rearm)
val |= 1 << DB_CQ_REARM_SHIFT;
val |= num_processed << DB_CQ_NUM_POPPED_SHIFT;
/* Setting lower order CQ_ID Bits */
val |= (id & DB_CQ_RING_ID_LOW_MASK);
/* Setting Higher order CQ_ID Bits */
val |= (((id >> DB_CQ_HIGH_FEILD_SHIFT) &
DB_CQ_RING_ID_HIGH_MASK)
<< DB_CQ_HIGH_SET_SHIFT);
iowrite32(val, phba->db_va + DB_CQ_OFFSET);
}
static struct sgl_handle *alloc_io_sgl_handle(struct beiscsi_hba *phba)
{
struct sgl_handle *psgl_handle;
unsigned long flags;
spin_lock_irqsave(&phba->io_sgl_lock, flags);
if (phba->io_sgl_hndl_avbl) {
beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_IO,
"BM_%d : In alloc_io_sgl_handle,"
" io_sgl_alloc_index=%d\n",
phba->io_sgl_alloc_index);
psgl_handle = phba->io_sgl_hndl_base[phba->
io_sgl_alloc_index];
phba->io_sgl_hndl_base[phba->io_sgl_alloc_index] = NULL;
phba->io_sgl_hndl_avbl--;
if (phba->io_sgl_alloc_index == (phba->params.
ios_per_ctrl - 1))
phba->io_sgl_alloc_index = 0;
else
phba->io_sgl_alloc_index++;
} else
psgl_handle = NULL;
spin_unlock_irqrestore(&phba->io_sgl_lock, flags);
return psgl_handle;
}
static void
free_io_sgl_handle(struct beiscsi_hba *phba, struct sgl_handle *psgl_handle)
{
unsigned long flags;
spin_lock_irqsave(&phba->io_sgl_lock, flags);
beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_IO,
"BM_%d : In free_,io_sgl_free_index=%d\n",
phba->io_sgl_free_index);
if (phba->io_sgl_hndl_base[phba->io_sgl_free_index]) {
/*
* this can happen if clean_task is called on a task that
* failed in xmit_task or alloc_pdu.
*/
beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_IO,
"BM_%d : Double Free in IO SGL io_sgl_free_index=%d, value there=%p\n",
phba->io_sgl_free_index,
phba->io_sgl_hndl_base[phba->io_sgl_free_index]);
spin_unlock_irqrestore(&phba->io_sgl_lock, flags);
return;
}
phba->io_sgl_hndl_base[phba->io_sgl_free_index] = psgl_handle;
phba->io_sgl_hndl_avbl++;
if (phba->io_sgl_free_index == (phba->params.ios_per_ctrl - 1))
phba->io_sgl_free_index = 0;
else
phba->io_sgl_free_index++;
spin_unlock_irqrestore(&phba->io_sgl_lock, flags);
}
static inline struct wrb_handle *
beiscsi_get_wrb_handle(struct hwi_wrb_context *pwrb_context,
unsigned int wrbs_per_cxn)
{
struct wrb_handle *pwrb_handle;
unsigned long flags;
spin_lock_irqsave(&pwrb_context->wrb_lock, flags);
if (!pwrb_context->wrb_handles_available) {
spin_unlock_irqrestore(&pwrb_context->wrb_lock, flags);
return NULL;
}
pwrb_handle = pwrb_context->pwrb_handle_base[pwrb_context->alloc_index];
pwrb_context->wrb_handles_available--;
if (pwrb_context->alloc_index == (wrbs_per_cxn - 1))
pwrb_context->alloc_index = 0;
else
pwrb_context->alloc_index++;
spin_unlock_irqrestore(&pwrb_context->wrb_lock, flags);
if (pwrb_handle)
memset(pwrb_handle->pwrb, 0, sizeof(*pwrb_handle->pwrb));
return pwrb_handle;
}
/**
* alloc_wrb_handle - To allocate a wrb handle
* @phba: The hba pointer
* @cid: The cid to use for allocation
* @pcontext: ptr to ptr to wrb context
*
* This happens under session_lock until submission to chip
*/
struct wrb_handle *alloc_wrb_handle(struct beiscsi_hba *phba, unsigned int cid,
struct hwi_wrb_context **pcontext)
{
struct hwi_wrb_context *pwrb_context;
struct hwi_controller *phwi_ctrlr;
uint16_t cri_index = BE_GET_CRI_FROM_CID(cid);
phwi_ctrlr = phba->phwi_ctrlr;
pwrb_context = &phwi_ctrlr->wrb_context[cri_index];
/* return the context address */
*pcontext = pwrb_context;
return beiscsi_get_wrb_handle(pwrb_context, phba->params.wrbs_per_cxn);
}
static inline void
beiscsi_put_wrb_handle(struct hwi_wrb_context *pwrb_context,
struct wrb_handle *pwrb_handle,
unsigned int wrbs_per_cxn)
{
unsigned long flags;
spin_lock_irqsave(&pwrb_context->wrb_lock, flags);
pwrb_context->pwrb_handle_base[pwrb_context->free_index] = pwrb_handle;
pwrb_context->wrb_handles_available++;
if (pwrb_context->free_index == (wrbs_per_cxn - 1))
pwrb_context->free_index = 0;
else
pwrb_context->free_index++;
pwrb_handle->pio_handle = NULL;
spin_unlock_irqrestore(&pwrb_context->wrb_lock, flags);
}
/**
* free_wrb_handle - To free the wrb handle back to pool
* @phba: The hba pointer
* @pwrb_context: The context to free from
* @pwrb_handle: The wrb_handle to free
*
* This happens under session_lock until submission to chip
*/
static void
free_wrb_handle(struct beiscsi_hba *phba, struct hwi_wrb_context *pwrb_context,
struct wrb_handle *pwrb_handle)
{
beiscsi_put_wrb_handle(pwrb_context,
pwrb_handle,
phba->params.wrbs_per_cxn);
beiscsi_log(phba, KERN_INFO,
BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,
"BM_%d : FREE WRB: pwrb_handle=%p free_index=0x%x "
"wrb_handles_available=%d\n",
pwrb_handle, pwrb_context->free_index,
pwrb_context->wrb_handles_available);
}
static struct sgl_handle *alloc_mgmt_sgl_handle(struct beiscsi_hba *phba)
{
struct sgl_handle *psgl_handle;
unsigned long flags;
spin_lock_irqsave(&phba->mgmt_sgl_lock, flags);
if (phba->eh_sgl_hndl_avbl) {
psgl_handle = phba->eh_sgl_hndl_base[phba->eh_sgl_alloc_index];
phba->eh_sgl_hndl_base[phba->eh_sgl_alloc_index] = NULL;
beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
"BM_%d : mgmt_sgl_alloc_index=%d=0x%x\n",
phba->eh_sgl_alloc_index,
phba->eh_sgl_alloc_index);
phba->eh_sgl_hndl_avbl--;
if (phba->eh_sgl_alloc_index ==
(phba->params.icds_per_ctrl - phba->params.ios_per_ctrl -
1))
phba->eh_sgl_alloc_index = 0;
else
phba->eh_sgl_alloc_index++;
} else
psgl_handle = NULL;
spin_unlock_irqrestore(&phba->mgmt_sgl_lock, flags);
return psgl_handle;
}
void
free_mgmt_sgl_handle(struct beiscsi_hba *phba, struct sgl_handle *psgl_handle)
{
unsigned long flags;
spin_lock_irqsave(&phba->mgmt_sgl_lock, flags);
beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
"BM_%d : In free_mgmt_sgl_handle,"
"eh_sgl_free_index=%d\n",
phba->eh_sgl_free_index);
if (phba->eh_sgl_hndl_base[phba->eh_sgl_free_index]) {
/*
* this can happen if clean_task is called on a task that
* failed in xmit_task or alloc_pdu.
*/
beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_CONFIG,
"BM_%d : Double Free in eh SGL ,"
"eh_sgl_free_index=%d\n",
phba->eh_sgl_free_index);
spin_unlock_irqrestore(&phba->mgmt_sgl_lock, flags);
return;
}
phba->eh_sgl_hndl_base[phba->eh_sgl_free_index] = psgl_handle;
phba->eh_sgl_hndl_avbl++;
if (phba->eh_sgl_free_index ==
(phba->params.icds_per_ctrl - phba->params.ios_per_ctrl - 1))
phba->eh_sgl_free_index = 0;
else
phba->eh_sgl_free_index++;
spin_unlock_irqrestore(&phba->mgmt_sgl_lock, flags);
}
static void
be_complete_io(struct beiscsi_conn *beiscsi_conn,
struct iscsi_task *task,
struct common_sol_cqe *csol_cqe)
{
struct beiscsi_io_task *io_task = task->dd_data;
struct be_status_bhs *sts_bhs =
(struct be_status_bhs *)io_task->cmd_bhs;
struct iscsi_conn *conn = beiscsi_conn->conn;
unsigned char *sense;
u32 resid = 0, exp_cmdsn, max_cmdsn;
u8 rsp, status, flags;
exp_cmdsn = csol_cqe->exp_cmdsn;
max_cmdsn = (csol_cqe->exp_cmdsn +
csol_cqe->cmd_wnd - 1);
rsp = csol_cqe->i_resp;
status = csol_cqe->i_sts;
flags = csol_cqe->i_flags;
resid = csol_cqe->res_cnt;
if (!task->sc) {
if (io_task->scsi_cmnd) {
scsi_dma_unmap(io_task->scsi_cmnd);
io_task->scsi_cmnd = NULL;
}
return;
}
task->sc->result = (DID_OK << 16) | status;
if (rsp != ISCSI_STATUS_CMD_COMPLETED) {
task->sc->result = DID_ERROR << 16;
goto unmap;
}
/* bidi not initially supported */
if (flags & (ISCSI_FLAG_CMD_UNDERFLOW | ISCSI_FLAG_CMD_OVERFLOW)) {
if (!status && (flags & ISCSI_FLAG_CMD_OVERFLOW))
task->sc->result = DID_ERROR << 16;
if (flags & ISCSI_FLAG_CMD_UNDERFLOW) {
scsi_set_resid(task->sc, resid);
if (!status && (scsi_bufflen(task->sc) - resid <
task->sc->underflow))
task->sc->result = DID_ERROR << 16;
}
}
if (status == SAM_STAT_CHECK_CONDITION) {
u16 sense_len;
unsigned short *slen = (unsigned short *)sts_bhs->sense_info;
sense = sts_bhs->sense_info + sizeof(unsigned short);
sense_len = be16_to_cpu(*slen);
memcpy(task->sc->sense_buffer, sense,
min_t(u16, sense_len, SCSI_SENSE_BUFFERSIZE));
}
if (io_task->cmd_bhs->iscsi_hdr.flags & ISCSI_FLAG_CMD_READ)
conn->rxdata_octets += resid;
unmap:
if (io_task->scsi_cmnd) {
scsi_dma_unmap(io_task->scsi_cmnd);
io_task->scsi_cmnd = NULL;
}
iscsi_complete_scsi_task(task, exp_cmdsn, max_cmdsn);
}
static void
be_complete_logout(struct beiscsi_conn *beiscsi_conn,
struct iscsi_task *task,
struct common_sol_cqe *csol_cqe)
{
struct iscsi_logout_rsp *hdr;
struct beiscsi_io_task *io_task = task->dd_data;
struct iscsi_conn *conn = beiscsi_conn->conn;
hdr = (struct iscsi_logout_rsp *)task->hdr;
hdr->opcode = ISCSI_OP_LOGOUT_RSP;
hdr->t2wait = 5;
hdr->t2retain = 0;
hdr->flags = csol_cqe->i_flags;
hdr->response = csol_cqe->i_resp;
hdr->exp_cmdsn = cpu_to_be32(csol_cqe->exp_cmdsn);
hdr->max_cmdsn = cpu_to_be32(csol_cqe->exp_cmdsn +
csol_cqe->cmd_wnd - 1);
hdr->dlength[0] = 0;
hdr->dlength[1] = 0;
hdr->dlength[2] = 0;
hdr->hlength = 0;
hdr->itt = io_task->libiscsi_itt;
__iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, NULL, 0);
}
static void
be_complete_tmf(struct beiscsi_conn *beiscsi_conn,
struct iscsi_task *task,
struct common_sol_cqe *csol_cqe)
{
struct iscsi_tm_rsp *hdr;
struct iscsi_conn *conn = beiscsi_conn->conn;
struct beiscsi_io_task *io_task = task->dd_data;
hdr = (struct iscsi_tm_rsp *)task->hdr;
hdr->opcode = ISCSI_OP_SCSI_TMFUNC_RSP;
hdr->flags = csol_cqe->i_flags;
hdr->response = csol_cqe->i_resp;
hdr->exp_cmdsn = cpu_to_be32(csol_cqe->exp_cmdsn);
hdr->max_cmdsn = cpu_to_be32(csol_cqe->exp_cmdsn +
csol_cqe->cmd_wnd - 1);
hdr->itt = io_task->libiscsi_itt;
__iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, NULL, 0);
}
static void
hwi_complete_drvr_msgs(struct beiscsi_conn *beiscsi_conn,
struct beiscsi_hba *phba, struct sol_cqe *psol)
{
struct hwi_wrb_context *pwrb_context;
uint16_t wrb_index, cid, cri_index;
struct hwi_controller *phwi_ctrlr;
struct wrb_handle *pwrb_handle;
struct iscsi_session *session;
struct iscsi_task *task;
phwi_ctrlr = phba->phwi_ctrlr;
if (is_chip_be2_be3r(phba)) {
wrb_index = AMAP_GET_BITS(struct amap_it_dmsg_cqe,
wrb_idx, psol);
cid = AMAP_GET_BITS(struct amap_it_dmsg_cqe,
cid, psol);
} else {
wrb_index = AMAP_GET_BITS(struct amap_it_dmsg_cqe_v2,
wrb_idx, psol);
cid = AMAP_GET_BITS(struct amap_it_dmsg_cqe_v2,
cid, psol);
}
cri_index = BE_GET_CRI_FROM_CID(cid);
pwrb_context = &phwi_ctrlr->wrb_context[cri_index];
pwrb_handle = pwrb_context->pwrb_handle_basestd[wrb_index];
session = beiscsi_conn->conn->session;
spin_lock_bh(&session->back_lock);
task = pwrb_handle->pio_handle;
if (task)
__iscsi_put_task(task);
spin_unlock_bh(&session->back_lock);
}
static void
be_complete_nopin_resp(struct beiscsi_conn *beiscsi_conn,
struct iscsi_task *task,
struct common_sol_cqe *csol_cqe)
{
struct iscsi_nopin *hdr;
struct iscsi_conn *conn = beiscsi_conn->conn;
struct beiscsi_io_task *io_task = task->dd_data;
hdr = (struct iscsi_nopin *)task->hdr;
hdr->flags = csol_cqe->i_flags;
hdr->exp_cmdsn = cpu_to_be32(csol_cqe->exp_cmdsn);
hdr->max_cmdsn = cpu_to_be32(csol_cqe->exp_cmdsn +
csol_cqe->cmd_wnd - 1);
hdr->opcode = ISCSI_OP_NOOP_IN;
hdr->itt = io_task->libiscsi_itt;
__iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, NULL, 0);
}
static void adapter_get_sol_cqe(struct beiscsi_hba *phba,
struct sol_cqe *psol,
struct common_sol_cqe *csol_cqe)
{
if (is_chip_be2_be3r(phba)) {
csol_cqe->exp_cmdsn = AMAP_GET_BITS(struct amap_sol_cqe,
i_exp_cmd_sn, psol);
csol_cqe->res_cnt = AMAP_GET_BITS(struct amap_sol_cqe,
i_res_cnt, psol);
csol_cqe->cmd_wnd = AMAP_GET_BITS(struct amap_sol_cqe,
i_cmd_wnd, psol);
csol_cqe->wrb_index = AMAP_GET_BITS(struct amap_sol_cqe,
wrb_index, psol);
csol_cqe->cid = AMAP_GET_BITS(struct amap_sol_cqe,
cid, psol);
csol_cqe->hw_sts = AMAP_GET_BITS(struct amap_sol_cqe,
hw_sts, psol);
csol_cqe->i_resp = AMAP_GET_BITS(struct amap_sol_cqe,
i_resp, psol);
csol_cqe->i_sts = AMAP_GET_BITS(struct amap_sol_cqe,
i_sts, psol);
csol_cqe->i_flags = AMAP_GET_BITS(struct amap_sol_cqe,
i_flags, psol);
} else {
csol_cqe->exp_cmdsn = AMAP_GET_BITS(struct amap_sol_cqe_v2,
i_exp_cmd_sn, psol);
csol_cqe->res_cnt = AMAP_GET_BITS(struct amap_sol_cqe_v2,
i_res_cnt, psol);
csol_cqe->wrb_index = AMAP_GET_BITS(struct amap_sol_cqe_v2,
wrb_index, psol);
csol_cqe->cid = AMAP_GET_BITS(struct amap_sol_cqe_v2,
cid, psol);
csol_cqe->hw_sts = AMAP_GET_BITS(struct amap_sol_cqe_v2,
hw_sts, psol);
csol_cqe->cmd_wnd = AMAP_GET_BITS(struct amap_sol_cqe_v2,
i_cmd_wnd, psol);
if (AMAP_GET_BITS(struct amap_sol_cqe_v2,
cmd_cmpl, psol))
csol_cqe->i_sts = AMAP_GET_BITS(struct amap_sol_cqe_v2,
i_sts, psol);
else
csol_cqe->i_resp = AMAP_GET_BITS(struct amap_sol_cqe_v2,
i_sts, psol);
if (AMAP_GET_BITS(struct amap_sol_cqe_v2,
u, psol))
csol_cqe->i_flags = ISCSI_FLAG_CMD_UNDERFLOW;
if (AMAP_GET_BITS(struct amap_sol_cqe_v2,
o, psol))
csol_cqe->i_flags |= ISCSI_FLAG_CMD_OVERFLOW;
}
}
static void hwi_complete_cmd(struct beiscsi_conn *beiscsi_conn,
struct beiscsi_hba *phba, struct sol_cqe *psol)
{
struct iscsi_conn *conn = beiscsi_conn->conn;
struct iscsi_session *session = conn->session;
struct common_sol_cqe csol_cqe = {0};
struct hwi_wrb_context *pwrb_context;
struct hwi_controller *phwi_ctrlr;
struct wrb_handle *pwrb_handle;
struct iscsi_task *task;
uint16_t cri_index = 0;
uint8_t type;
phwi_ctrlr = phba->phwi_ctrlr;
/* Copy the elements to a common structure */
adapter_get_sol_cqe(phba, psol, &csol_cqe);
cri_index = BE_GET_CRI_FROM_CID(csol_cqe.cid);
pwrb_context = &phwi_ctrlr->wrb_context[cri_index];
pwrb_handle = pwrb_context->pwrb_handle_basestd[
csol_cqe.wrb_index];
spin_lock_bh(&session->back_lock);
task = pwrb_handle->pio_handle;
if (!task) {
spin_unlock_bh(&session->back_lock);
return;
}
type = ((struct beiscsi_io_task *)task->dd_data)->wrb_type;
switch (type) {
case HWH_TYPE_IO:
case HWH_TYPE_IO_RD:
if ((task->hdr->opcode & ISCSI_OPCODE_MASK) ==
ISCSI_OP_NOOP_OUT)
be_complete_nopin_resp(beiscsi_conn, task, &csol_cqe);
else
be_complete_io(beiscsi_conn, task, &csol_cqe);
break;
case HWH_TYPE_LOGOUT:
if ((task->hdr->opcode & ISCSI_OPCODE_MASK) == ISCSI_OP_LOGOUT)
be_complete_logout(beiscsi_conn, task, &csol_cqe);
else
be_complete_tmf(beiscsi_conn, task, &csol_cqe);
break;
case HWH_TYPE_LOGIN:
beiscsi_log(phba, KERN_ERR,
BEISCSI_LOG_CONFIG | BEISCSI_LOG_IO,
"BM_%d :\t\t No HWH_TYPE_LOGIN Expected in"
" %s- Solicited path\n", __func__);
break;
case HWH_TYPE_NOP:
be_complete_nopin_resp(beiscsi_conn, task, &csol_cqe);
break;
default:
beiscsi_log(phba, KERN_WARNING,
BEISCSI_LOG_CONFIG | BEISCSI_LOG_IO,
"BM_%d : In %s, unknown type = %d "
"wrb_index 0x%x CID 0x%x\n", __func__, type,
csol_cqe.wrb_index,
csol_cqe.cid);
break;
}
spin_unlock_bh(&session->back_lock);
}
/*
* ASYNC PDUs include
* a. Unsolicited NOP-In (target initiated NOP-In)
* b. ASYNC Messages
* c. Reject PDU
* d. Login response
* These headers arrive unprocessed by the EP firmware.
* iSCSI layer processes them.
*/
static unsigned int
beiscsi_complete_pdu(struct beiscsi_conn *beiscsi_conn,
struct pdu_base *phdr, void *pdata, unsigned int dlen)
{
struct beiscsi_hba *phba = beiscsi_conn->phba;
struct iscsi_conn *conn = beiscsi_conn->conn;
struct beiscsi_io_task *io_task;
struct iscsi_hdr *login_hdr;
struct iscsi_task *task;
u8 code;
code = AMAP_GET_BITS(struct amap_pdu_base, opcode, phdr);
switch (code) {
case ISCSI_OP_NOOP_IN:
pdata = NULL;
dlen = 0;
break;
case ISCSI_OP_ASYNC_EVENT:
break;
case ISCSI_OP_REJECT:
WARN_ON(!pdata);
WARN_ON(!(dlen == 48));
beiscsi_log(phba, KERN_ERR,
BEISCSI_LOG_CONFIG | BEISCSI_LOG_IO,
"BM_%d : In ISCSI_OP_REJECT\n");
break;
case ISCSI_OP_LOGIN_RSP:
case ISCSI_OP_TEXT_RSP:
task = conn->login_task;
io_task = task->dd_data;
login_hdr = (struct iscsi_hdr *)phdr;
login_hdr->itt = io_task->libiscsi_itt;
break;
default:
beiscsi_log(phba, KERN_WARNING,
BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,
"BM_%d : unrecognized async PDU opcode 0x%x\n",
code);
return 1;
}
__iscsi_complete_pdu(conn, (struct iscsi_hdr *)phdr, pdata, dlen);
return 0;
}
static inline void
beiscsi_hdl_put_handle(struct hd_async_context *pasync_ctx,
struct hd_async_handle *pasync_handle)
{
pasync_handle->is_final = 0;
pasync_handle->buffer_len = 0;
pasync_handle->in_use = 0;
list_del_init(&pasync_handle->link);
}
static void
beiscsi_hdl_purge_handles(struct beiscsi_hba *phba,
struct hd_async_context *pasync_ctx,
u16 cri)
{
struct hd_async_handle *pasync_handle, *tmp_handle;
struct list_head *plist;
plist = &pasync_ctx->async_entry[cri].wq.list;
list_for_each_entry_safe(pasync_handle, tmp_handle, plist, link)
beiscsi_hdl_put_handle(pasync_ctx, pasync_handle);
INIT_LIST_HEAD(&pasync_ctx->async_entry[cri].wq.list);
pasync_ctx->async_entry[cri].wq.hdr_len = 0;
pasync_ctx->async_entry[cri].wq.bytes_received = 0;
pasync_ctx->async_entry[cri].wq.bytes_needed = 0;
}
static struct hd_async_handle *
beiscsi_hdl_get_handle(struct beiscsi_conn *beiscsi_conn,
struct hd_async_context *pasync_ctx,
struct i_t_dpdu_cqe *pdpdu_cqe,
u8 *header)
{
struct beiscsi_hba *phba = beiscsi_conn->phba;
struct hd_async_handle *pasync_handle;
struct be_bus_address phys_addr;
u16 cid, code, ci, cri;
u8 final, error = 0;
u32 dpl;
cid = beiscsi_conn->beiscsi_conn_cid;
cri = BE_GET_ASYNC_CRI_FROM_CID(cid);
/**
* This function is invoked to get the right async_handle structure
* from a given DEF PDU CQ entry.
*
* - index in CQ entry gives the vertical index
* - address in CQ entry is the offset where the DMA last ended
* - final - no more notifications for this PDU
*/
if (is_chip_be2_be3r(phba)) {
dpl = AMAP_GET_BITS(struct amap_i_t_dpdu_cqe,
dpl, pdpdu_cqe);
ci = AMAP_GET_BITS(struct amap_i_t_dpdu_cqe,
index, pdpdu_cqe);
final = AMAP_GET_BITS(struct amap_i_t_dpdu_cqe,
final, pdpdu_cqe);
} else {
dpl = AMAP_GET_BITS(struct amap_i_t_dpdu_cqe_v2,
dpl, pdpdu_cqe);
ci = AMAP_GET_BITS(struct amap_i_t_dpdu_cqe_v2,
index, pdpdu_cqe);
final = AMAP_GET_BITS(struct amap_i_t_dpdu_cqe_v2,
final, pdpdu_cqe);
}
/**
* DB addr Hi/Lo is same for BE and SKH.
* Subtract the dataplacementlength to get to the base.
*/
phys_addr.u.a32.address_lo = AMAP_GET_BITS(struct amap_i_t_dpdu_cqe,
db_addr_lo, pdpdu_cqe);
phys_addr.u.a32.address_lo -= dpl;
phys_addr.u.a32.address_hi = AMAP_GET_BITS(struct amap_i_t_dpdu_cqe,
db_addr_hi, pdpdu_cqe);
code = AMAP_GET_BITS(struct amap_i_t_dpdu_cqe, code, pdpdu_cqe);
switch (code) {
case UNSOL_HDR_NOTIFY:
pasync_handle = pasync_ctx->async_entry[ci].header;
*header = 1;
break;
case UNSOL_DATA_DIGEST_ERROR_NOTIFY:
error = 1;
fallthrough;
case UNSOL_DATA_NOTIFY:
pasync_handle = pasync_ctx->async_entry[ci].data;
break;
/* called only for above codes */
default:
return NULL;
}
if (pasync_handle->pa.u.a64.address != phys_addr.u.a64.address ||
pasync_handle->index != ci) {
/* driver bug - if ci does not match async handle index */
error = 1;
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_ISCSI,
"BM_%d : cid %u async PDU handle mismatch - addr in %cQE %llx at %u:addr in CQE %llx ci %u\n",
cid, pasync_handle->is_header ? 'H' : 'D',
pasync_handle->pa.u.a64.address,
pasync_handle->index,
phys_addr.u.a64.address, ci);
/* FW has stale address - attempt continuing by dropping */
}
/**
* DEF PDU header and data buffers with errors should be simply
* dropped as there are no consumers for it.
*/
if (error) {
beiscsi_hdl_put_handle(pasync_ctx, pasync_handle);
return NULL;
}
if (pasync_handle->in_use || !list_empty(&pasync_handle->link)) {
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_ISCSI,
"BM_%d : cid %d async PDU handle in use - code %d ci %d addr %llx\n",
cid, code, ci, phys_addr.u.a64.address);
beiscsi_hdl_purge_handles(phba, pasync_ctx, cri);
}
list_del_init(&pasync_handle->link);
/**
* Each CID is associated with unique CRI.
* ASYNC_CRI_FROM_CID mapping and CRI_FROM_CID are totaly different.
**/
pasync_handle->cri = cri;
pasync_handle->is_final = final;
pasync_handle->buffer_len = dpl;
pasync_handle->in_use = 1;
return pasync_handle;
}
static unsigned int
beiscsi_hdl_fwd_pdu(struct beiscsi_conn *beiscsi_conn,
struct hd_async_context *pasync_ctx,
u16 cri)
{
struct iscsi_session *session = beiscsi_conn->conn->session;
struct hd_async_handle *pasync_handle, *plast_handle;
struct beiscsi_hba *phba = beiscsi_conn->phba;
void *phdr = NULL, *pdata = NULL;
u32 dlen = 0, status = 0;
struct list_head *plist;
plist = &pasync_ctx->async_entry[cri].wq.list;
plast_handle = NULL;
list_for_each_entry(pasync_handle, plist, link) {
plast_handle = pasync_handle;
/* get the header, the first entry */
if (!phdr) {
phdr = pasync_handle->pbuffer;
continue;
}
/* use first buffer to collect all the data */
if (!pdata) {
pdata = pasync_handle->pbuffer;
dlen = pasync_handle->buffer_len;
continue;
}
if (!pasync_handle->buffer_len ||
(dlen + pasync_handle->buffer_len) >
pasync_ctx->async_data.buffer_size)
break;
memcpy(pdata + dlen, pasync_handle->pbuffer,
pasync_handle->buffer_len);
dlen += pasync_handle->buffer_len;
}
if (!plast_handle->is_final) {
/* last handle should have final PDU notification from FW */
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_ISCSI,
"BM_%d : cid %u %p fwd async PDU opcode %x with last handle missing - HL%u:DN%u:DR%u\n",
beiscsi_conn->beiscsi_conn_cid, plast_handle,
AMAP_GET_BITS(struct amap_pdu_base, opcode, phdr),
pasync_ctx->async_entry[cri].wq.hdr_len,
pasync_ctx->async_entry[cri].wq.bytes_needed,
pasync_ctx->async_entry[cri].wq.bytes_received);
}
spin_lock_bh(&session->back_lock);
status = beiscsi_complete_pdu(beiscsi_conn, phdr, pdata, dlen);
spin_unlock_bh(&session->back_lock);
beiscsi_hdl_purge_handles(phba, pasync_ctx, cri);
return status;
}
static unsigned int
beiscsi_hdl_gather_pdu(struct beiscsi_conn *beiscsi_conn,
struct hd_async_context *pasync_ctx,
struct hd_async_handle *pasync_handle)
{
unsigned int bytes_needed = 0, status = 0;
u16 cri = pasync_handle->cri;
struct cri_wait_queue *wq;
struct beiscsi_hba *phba;
struct pdu_base *ppdu;
char *err = "";
phba = beiscsi_conn->phba;
wq = &pasync_ctx->async_entry[cri].wq;
if (pasync_handle->is_header) {
/* check if PDU hdr is rcv'd when old hdr not completed */
if (wq->hdr_len) {
err = "incomplete";
goto drop_pdu;
}
ppdu = pasync_handle->pbuffer;
bytes_needed = AMAP_GET_BITS(struct amap_pdu_base,
data_len_hi, ppdu);
bytes_needed <<= 16;
bytes_needed |= be16_to_cpu(AMAP_GET_BITS(struct amap_pdu_base,
data_len_lo, ppdu));
wq->hdr_len = pasync_handle->buffer_len;
wq->bytes_received = 0;
wq->bytes_needed = bytes_needed;
list_add_tail(&pasync_handle->link, &wq->list);
if (!bytes_needed)
status = beiscsi_hdl_fwd_pdu(beiscsi_conn,
pasync_ctx, cri);
} else {
/* check if data received has header and is needed */
if (!wq->hdr_len || !wq->bytes_needed) {
err = "header less";
goto drop_pdu;
}
wq->bytes_received += pasync_handle->buffer_len;
/* Something got overwritten? Better catch it here. */
if (wq->bytes_received > wq->bytes_needed) {
err = "overflow";
goto drop_pdu;
}
list_add_tail(&pasync_handle->link, &wq->list);
if (wq->bytes_received == wq->bytes_needed)
status = beiscsi_hdl_fwd_pdu(beiscsi_conn,
pasync_ctx, cri);
}
return status;
drop_pdu:
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_ISCSI,
"BM_%d : cid %u async PDU %s - def-%c:HL%u:DN%u:DR%u\n",
beiscsi_conn->beiscsi_conn_cid, err,
pasync_handle->is_header ? 'H' : 'D',
wq->hdr_len, wq->bytes_needed,
pasync_handle->buffer_len);
/* discard this handle */
beiscsi_hdl_put_handle(pasync_ctx, pasync_handle);
/* free all the other handles in cri_wait_queue */
beiscsi_hdl_purge_handles(phba, pasync_ctx, cri);
/* try continuing */
return status;
}
static void
beiscsi_hdq_post_handles(struct beiscsi_hba *phba,
u8 header, u8 ulp_num, u16 nbuf)
{
struct hd_async_handle *pasync_handle;
struct hd_async_context *pasync_ctx;
struct hwi_controller *phwi_ctrlr;
struct phys_addr *pasync_sge;
u32 ring_id, doorbell = 0;
u32 doorbell_offset;
u16 prod, pi;
phwi_ctrlr = phba->phwi_ctrlr;
pasync_ctx = HWI_GET_ASYNC_PDU_CTX(phwi_ctrlr, ulp_num);
if (header) {
pasync_sge = pasync_ctx->async_header.ring_base;
pi = pasync_ctx->async_header.pi;
ring_id = phwi_ctrlr->default_pdu_hdr[ulp_num].id;
doorbell_offset = phwi_ctrlr->default_pdu_hdr[ulp_num].
doorbell_offset;
} else {
pasync_sge = pasync_ctx->async_data.ring_base;
pi = pasync_ctx->async_data.pi;
ring_id = phwi_ctrlr->default_pdu_data[ulp_num].id;
doorbell_offset = phwi_ctrlr->default_pdu_data[ulp_num].
doorbell_offset;
}
for (prod = 0; prod < nbuf; prod++) {
if (header)
pasync_handle = pasync_ctx->async_entry[pi].header;
else
pasync_handle = pasync_ctx->async_entry[pi].data;
WARN_ON(pasync_handle->is_header != header);
WARN_ON(pasync_handle->index != pi);
/* setup the ring only once */
if (nbuf == pasync_ctx->num_entries) {
/* note hi is lo */
pasync_sge[pi].hi = pasync_handle->pa.u.a32.address_lo;
pasync_sge[pi].lo = pasync_handle->pa.u.a32.address_hi;
}
if (++pi == pasync_ctx->num_entries)
pi = 0;
}
if (header)
pasync_ctx->async_header.pi = pi;
else
pasync_ctx->async_data.pi = pi;
doorbell |= ring_id & DB_DEF_PDU_RING_ID_MASK;
doorbell |= 1 << DB_DEF_PDU_REARM_SHIFT;
doorbell |= 0 << DB_DEF_PDU_EVENT_SHIFT;
doorbell |= (prod & DB_DEF_PDU_CQPROC_MASK) << DB_DEF_PDU_CQPROC_SHIFT;
iowrite32(doorbell, phba->db_va + doorbell_offset);
}
static void
beiscsi_hdq_process_compl(struct beiscsi_conn *beiscsi_conn,
struct i_t_dpdu_cqe *pdpdu_cqe)
{
struct beiscsi_hba *phba = beiscsi_conn->phba;
struct hd_async_handle *pasync_handle = NULL;
struct hd_async_context *pasync_ctx;
struct hwi_controller *phwi_ctrlr;
u8 ulp_num, consumed, header = 0;
u16 cid_cri;
phwi_ctrlr = phba->phwi_ctrlr;
cid_cri = BE_GET_CRI_FROM_CID(beiscsi_conn->beiscsi_conn_cid);
ulp_num = BEISCSI_GET_ULP_FROM_CRI(phwi_ctrlr, cid_cri);
pasync_ctx = HWI_GET_ASYNC_PDU_CTX(phwi_ctrlr, ulp_num);
pasync_handle = beiscsi_hdl_get_handle(beiscsi_conn, pasync_ctx,
pdpdu_cqe, &header);
if (is_chip_be2_be3r(phba))
consumed = AMAP_GET_BITS(struct amap_i_t_dpdu_cqe,
num_cons, pdpdu_cqe);
else
consumed = AMAP_GET_BITS(struct amap_i_t_dpdu_cqe_v2,
num_cons, pdpdu_cqe);
if (pasync_handle)
beiscsi_hdl_gather_pdu(beiscsi_conn, pasync_ctx, pasync_handle);
/* num_cons indicates number of 8 RQEs consumed */
if (consumed)
beiscsi_hdq_post_handles(phba, header, ulp_num, 8 * consumed);
}
void beiscsi_process_mcc_cq(struct beiscsi_hba *phba)
{
struct be_queue_info *mcc_cq;
struct be_mcc_compl *mcc_compl;
unsigned int num_processed = 0;
mcc_cq = &phba->ctrl.mcc_obj.cq;
mcc_compl = queue_tail_node(mcc_cq);
mcc_compl->flags = le32_to_cpu(mcc_compl->flags);
while (mcc_compl->flags & CQE_FLAGS_VALID_MASK) {
if (beiscsi_hba_in_error(phba))
return;
if (num_processed >= 32) {
hwi_ring_cq_db(phba, mcc_cq->id,
num_processed, 0);
num_processed = 0;
}
if (mcc_compl->flags & CQE_FLAGS_ASYNC_MASK) {
beiscsi_process_async_event(phba, mcc_compl);
} else if (mcc_compl->flags & CQE_FLAGS_COMPLETED_MASK) {
beiscsi_process_mcc_compl(&phba->ctrl, mcc_compl);
}
mcc_compl->flags = 0;
queue_tail_inc(mcc_cq);
mcc_compl = queue_tail_node(mcc_cq);
mcc_compl->flags = le32_to_cpu(mcc_compl->flags);
num_processed++;
}
if (num_processed > 0)
hwi_ring_cq_db(phba, mcc_cq->id, num_processed, 1);
}
static void beiscsi_mcc_work(struct work_struct *work)
{
struct be_eq_obj *pbe_eq;
struct beiscsi_hba *phba;
pbe_eq = container_of(work, struct be_eq_obj, mcc_work);
phba = pbe_eq->phba;
beiscsi_process_mcc_cq(phba);
/* rearm EQ for further interrupts */
if (!beiscsi_hba_in_error(phba))
hwi_ring_eq_db(phba, pbe_eq->q.id, 0, 0, 1, 1);
}
/**
* beiscsi_process_cq()- Process the Completion Queue
* @pbe_eq: Event Q on which the Completion has come
* @budget: Max number of events to processed
*
* return
* Number of Completion Entries processed.
**/
unsigned int beiscsi_process_cq(struct be_eq_obj *pbe_eq, int budget)
{
struct be_queue_info *cq;
struct sol_cqe *sol;
unsigned int total = 0;
unsigned int num_processed = 0;
unsigned short code = 0, cid = 0;
uint16_t cri_index = 0;
struct beiscsi_conn *beiscsi_conn;
struct beiscsi_endpoint *beiscsi_ep;
struct iscsi_endpoint *ep;
struct beiscsi_hba *phba;
cq = pbe_eq->cq;
sol = queue_tail_node(cq);
phba = pbe_eq->phba;
while (sol->dw[offsetof(struct amap_sol_cqe, valid) / 32] &
CQE_VALID_MASK) {
if (beiscsi_hba_in_error(phba))
return 0;
be_dws_le_to_cpu(sol, sizeof(struct sol_cqe));
code = (sol->dw[offsetof(struct amap_sol_cqe, code) / 32] &
CQE_CODE_MASK);
/* Get the CID */
if (is_chip_be2_be3r(phba)) {
cid = AMAP_GET_BITS(struct amap_sol_cqe, cid, sol);
} else {
if ((code == DRIVERMSG_NOTIFY) ||
(code == UNSOL_HDR_NOTIFY) ||
(code == UNSOL_DATA_NOTIFY))
cid = AMAP_GET_BITS(
struct amap_i_t_dpdu_cqe_v2,
cid, sol);
else
cid = AMAP_GET_BITS(struct amap_sol_cqe_v2,
cid, sol);
}
cri_index = BE_GET_CRI_FROM_CID(cid);
ep = phba->ep_array[cri_index];
if (ep == NULL) {
/* connection has already been freed
* just move on to next one
*/
beiscsi_log(phba, KERN_WARNING,
BEISCSI_LOG_INIT,
"BM_%d : proc cqe of disconn ep: cid %d\n",
cid);
goto proc_next_cqe;
}
beiscsi_ep = ep->dd_data;
beiscsi_conn = beiscsi_ep->conn;
/* replenish cq */
if (num_processed == 32) {
hwi_ring_cq_db(phba, cq->id, 32, 0);
num_processed = 0;
}
total++;
switch (code) {
case SOL_CMD_COMPLETE:
hwi_complete_cmd(beiscsi_conn, phba, sol);
break;
case DRIVERMSG_NOTIFY:
beiscsi_log(phba, KERN_INFO,
BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,
"BM_%d : Received %s[%d] on CID : %d\n",
cqe_desc[code], code, cid);
hwi_complete_drvr_msgs(beiscsi_conn, phba, sol);
break;
case UNSOL_HDR_NOTIFY:
beiscsi_log(phba, KERN_INFO,
BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,
"BM_%d : Received %s[%d] on CID : %d\n",
cqe_desc[code], code, cid);
spin_lock_bh(&phba->async_pdu_lock);
beiscsi_hdq_process_compl(beiscsi_conn,
(struct i_t_dpdu_cqe *)sol);
spin_unlock_bh(&phba->async_pdu_lock);
break;
case UNSOL_DATA_NOTIFY:
beiscsi_log(phba, KERN_INFO,
BEISCSI_LOG_CONFIG | BEISCSI_LOG_IO,
"BM_%d : Received %s[%d] on CID : %d\n",
cqe_desc[code], code, cid);
spin_lock_bh(&phba->async_pdu_lock);
beiscsi_hdq_process_compl(beiscsi_conn,
(struct i_t_dpdu_cqe *)sol);
spin_unlock_bh(&phba->async_pdu_lock);
break;
case CXN_INVALIDATE_INDEX_NOTIFY:
case CMD_INVALIDATED_NOTIFY:
case CXN_INVALIDATE_NOTIFY:
beiscsi_log(phba, KERN_ERR,
BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,
"BM_%d : Ignoring %s[%d] on CID : %d\n",
cqe_desc[code], code, cid);
break;
case CXN_KILLED_HDR_DIGEST_ERR:
case SOL_CMD_KILLED_DATA_DIGEST_ERR:
beiscsi_log(phba, KERN_ERR,
BEISCSI_LOG_CONFIG | BEISCSI_LOG_IO,
"BM_%d : Cmd Notification %s[%d] on CID : %d\n",
cqe_desc[code], code, cid);
break;
case CMD_KILLED_INVALID_STATSN_RCVD:
case CMD_KILLED_INVALID_R2T_RCVD:
case CMD_CXN_KILLED_LUN_INVALID:
case CMD_CXN_KILLED_ICD_INVALID:
case CMD_CXN_KILLED_ITT_INVALID:
case CMD_CXN_KILLED_SEQ_OUTOFORDER:
case CMD_CXN_KILLED_INVALID_DATASN_RCVD:
beiscsi_log(phba, KERN_ERR,
BEISCSI_LOG_CONFIG | BEISCSI_LOG_IO,
"BM_%d : Cmd Notification %s[%d] on CID : %d\n",
cqe_desc[code], code, cid);
break;
case UNSOL_DATA_DIGEST_ERROR_NOTIFY:
beiscsi_log(phba, KERN_ERR,
BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,
"BM_%d : Dropping %s[%d] on DPDU ring on CID : %d\n",
cqe_desc[code], code, cid);
spin_lock_bh(&phba->async_pdu_lock);
/* driver consumes the entry and drops the contents */
beiscsi_hdq_process_compl(beiscsi_conn,
(struct i_t_dpdu_cqe *)sol);
spin_unlock_bh(&phba->async_pdu_lock);
break;
case CXN_KILLED_PDU_SIZE_EXCEEDS_DSL:
case CXN_KILLED_BURST_LEN_MISMATCH:
case CXN_KILLED_AHS_RCVD:
case CXN_KILLED_UNKNOWN_HDR:
case CXN_KILLED_STALE_ITT_TTT_RCVD:
case CXN_KILLED_INVALID_ITT_TTT_RCVD:
case CXN_KILLED_TIMED_OUT:
case CXN_KILLED_FIN_RCVD:
case CXN_KILLED_RST_SENT:
case CXN_KILLED_RST_RCVD:
case CXN_KILLED_BAD_UNSOL_PDU_RCVD:
case CXN_KILLED_BAD_WRB_INDEX_ERROR:
case CXN_KILLED_OVER_RUN_RESIDUAL:
case CXN_KILLED_UNDER_RUN_RESIDUAL:
case CXN_KILLED_CMND_DATA_NOT_ON_SAME_CONN:
beiscsi_log(phba, KERN_ERR,
BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,
"BM_%d : Event %s[%d] received on CID : %d\n",
cqe_desc[code], code, cid);
if (beiscsi_conn)
iscsi_conn_failure(beiscsi_conn->conn,
ISCSI_ERR_CONN_FAILED);
break;
default:
beiscsi_log(phba, KERN_ERR,
BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,
"BM_%d : Invalid CQE Event Received Code : %d CID 0x%x...\n",
code, cid);
break;
}
proc_next_cqe:
AMAP_SET_BITS(struct amap_sol_cqe, valid, sol, 0);
queue_tail_inc(cq);
sol = queue_tail_node(cq);
num_processed++;
if (total == budget)
break;
}
hwi_ring_cq_db(phba, cq->id, num_processed, 1);
return total;
}
static int be_iopoll(struct irq_poll *iop, int budget)
{
unsigned int ret, io_events;
struct beiscsi_hba *phba;
struct be_eq_obj *pbe_eq;
struct be_eq_entry *eqe = NULL;
struct be_queue_info *eq;
pbe_eq = container_of(iop, struct be_eq_obj, iopoll);
phba = pbe_eq->phba;
if (beiscsi_hba_in_error(phba)) {
irq_poll_complete(iop);
return 0;
}
io_events = 0;
eq = &pbe_eq->q;
eqe = queue_tail_node(eq);
while (eqe->dw[offsetof(struct amap_eq_entry, valid) / 32] &
EQE_VALID_MASK) {
AMAP_SET_BITS(struct amap_eq_entry, valid, eqe, 0);
queue_tail_inc(eq);
eqe = queue_tail_node(eq);
io_events++;
}
hwi_ring_eq_db(phba, eq->id, 1, io_events, 0, 1);
ret = beiscsi_process_cq(pbe_eq, budget);
pbe_eq->cq_count += ret;
if (ret < budget) {
irq_poll_complete(iop);
beiscsi_log(phba, KERN_INFO,
BEISCSI_LOG_CONFIG | BEISCSI_LOG_IO,
"BM_%d : rearm pbe_eq->q.id =%d ret %d\n",
pbe_eq->q.id, ret);
if (!beiscsi_hba_in_error(phba))
hwi_ring_eq_db(phba, pbe_eq->q.id, 0, 0, 1, 1);
}
return ret;
}
static void
hwi_write_sgl_v2(struct iscsi_wrb *pwrb, struct scatterlist *sg,
unsigned int num_sg, struct beiscsi_io_task *io_task)
{
struct iscsi_sge *psgl;
unsigned int sg_len, index;
unsigned int sge_len = 0;
unsigned long long addr;
struct scatterlist *l_sg;
unsigned int offset;
AMAP_SET_BITS(struct amap_iscsi_wrb_v2, iscsi_bhs_addr_lo, pwrb,
io_task->bhs_pa.u.a32.address_lo);
AMAP_SET_BITS(struct amap_iscsi_wrb_v2, iscsi_bhs_addr_hi, pwrb,
io_task->bhs_pa.u.a32.address_hi);
l_sg = sg;
for (index = 0; (index < num_sg) && (index < 2); index++,
sg = sg_next(sg)) {
if (index == 0) {
sg_len = sg_dma_len(sg);
addr = (u64) sg_dma_address(sg);
AMAP_SET_BITS(struct amap_iscsi_wrb_v2,
sge0_addr_lo, pwrb,
lower_32_bits(addr));
AMAP_SET_BITS(struct amap_iscsi_wrb_v2,
sge0_addr_hi, pwrb,
upper_32_bits(addr));
AMAP_SET_BITS(struct amap_iscsi_wrb_v2,
sge0_len, pwrb,
sg_len);
sge_len = sg_len;
} else {
AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sge1_r2t_offset,
pwrb, sge_len);
sg_len = sg_dma_len(sg);
addr = (u64) sg_dma_address(sg);
AMAP_SET_BITS(struct amap_iscsi_wrb_v2,
sge1_addr_lo, pwrb,
lower_32_bits(addr));
AMAP_SET_BITS(struct amap_iscsi_wrb_v2,
sge1_addr_hi, pwrb,
upper_32_bits(addr));
AMAP_SET_BITS(struct amap_iscsi_wrb_v2,
sge1_len, pwrb,
sg_len);
}
}
psgl = (struct iscsi_sge *)io_task->psgl_handle->pfrag;
memset(psgl, 0, sizeof(*psgl) * BE2_SGE);
AMAP_SET_BITS(struct amap_iscsi_sge, len, psgl, io_task->bhs_len - 2);
AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, psgl,
io_task->bhs_pa.u.a32.address_hi);
AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, psgl,
io_task->bhs_pa.u.a32.address_lo);
if (num_sg == 1) {
AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sge0_last, pwrb,
1);
AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sge1_last, pwrb,
0);
} else if (num_sg == 2) {
AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sge0_last, pwrb,
0);
AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sge1_last, pwrb,
1);
} else {
AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sge0_last, pwrb,
0);
AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sge1_last, pwrb,
0);
}
sg = l_sg;
psgl++;
psgl++;
offset = 0;
for (index = 0; index < num_sg; index++, sg = sg_next(sg), psgl++) {
sg_len = sg_dma_len(sg);
addr = (u64) sg_dma_address(sg);
AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, psgl,
lower_32_bits(addr));
AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, psgl,
upper_32_bits(addr));
AMAP_SET_BITS(struct amap_iscsi_sge, len, psgl, sg_len);
AMAP_SET_BITS(struct amap_iscsi_sge, sge_offset, psgl, offset);
AMAP_SET_BITS(struct amap_iscsi_sge, last_sge, psgl, 0);
offset += sg_len;
}
psgl--;
AMAP_SET_BITS(struct amap_iscsi_sge, last_sge, psgl, 1);
}
static void
hwi_write_sgl(struct iscsi_wrb *pwrb, struct scatterlist *sg,
unsigned int num_sg, struct beiscsi_io_task *io_task)
{
struct iscsi_sge *psgl;
unsigned int sg_len, index;
unsigned int sge_len = 0;
unsigned long long addr;
struct scatterlist *l_sg;
unsigned int offset;
AMAP_SET_BITS(struct amap_iscsi_wrb, iscsi_bhs_addr_lo, pwrb,
io_task->bhs_pa.u.a32.address_lo);
AMAP_SET_BITS(struct amap_iscsi_wrb, iscsi_bhs_addr_hi, pwrb,
io_task->bhs_pa.u.a32.address_hi);
l_sg = sg;
for (index = 0; (index < num_sg) && (index < 2); index++,
sg = sg_next(sg)) {
if (index == 0) {
sg_len = sg_dma_len(sg);
addr = (u64) sg_dma_address(sg);
AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_addr_lo, pwrb,
((u32)(addr & 0xFFFFFFFF)));
AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_addr_hi, pwrb,
((u32)(addr >> 32)));
AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_len, pwrb,
sg_len);
sge_len = sg_len;
} else {
AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_r2t_offset,
pwrb, sge_len);
sg_len = sg_dma_len(sg);
addr = (u64) sg_dma_address(sg);
AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_addr_lo, pwrb,
((u32)(addr & 0xFFFFFFFF)));
AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_addr_hi, pwrb,
((u32)(addr >> 32)));
AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_len, pwrb,
sg_len);
}
}
psgl = (struct iscsi_sge *)io_task->psgl_handle->pfrag;
memset(psgl, 0, sizeof(*psgl) * BE2_SGE);
AMAP_SET_BITS(struct amap_iscsi_sge, len, psgl, io_task->bhs_len - 2);
AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, psgl,
io_task->bhs_pa.u.a32.address_hi);
AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, psgl,
io_task->bhs_pa.u.a32.address_lo);
if (num_sg == 1) {
AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_last, pwrb,
1);
AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_last, pwrb,
0);
} else if (num_sg == 2) {
AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_last, pwrb,
0);
AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_last, pwrb,
1);
} else {
AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_last, pwrb,
0);
AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_last, pwrb,
0);
}
sg = l_sg;
psgl++;
psgl++;
offset = 0;
for (index = 0; index < num_sg; index++, sg = sg_next(sg), psgl++) {
sg_len = sg_dma_len(sg);
addr = (u64) sg_dma_address(sg);
AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, psgl,
(addr & 0xFFFFFFFF));
AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, psgl,
(addr >> 32));
AMAP_SET_BITS(struct amap_iscsi_sge, len, psgl, sg_len);
AMAP_SET_BITS(struct amap_iscsi_sge, sge_offset, psgl, offset);
AMAP_SET_BITS(struct amap_iscsi_sge, last_sge, psgl, 0);
offset += sg_len;
}
psgl--;
AMAP_SET_BITS(struct amap_iscsi_sge, last_sge, psgl, 1);
}
/**
* hwi_write_buffer()- Populate the WRB with task info
* @pwrb: ptr to the WRB entry
* @task: iscsi task which is to be executed
**/
static int hwi_write_buffer(struct iscsi_wrb *pwrb, struct iscsi_task *task)
{
struct iscsi_sge *psgl;
struct beiscsi_io_task *io_task = task->dd_data;
struct beiscsi_conn *beiscsi_conn = io_task->conn;
struct beiscsi_hba *phba = beiscsi_conn->phba;
uint8_t dsp_value = 0;
io_task->bhs_len = sizeof(struct be_nonio_bhs) - 2;
AMAP_SET_BITS(struct amap_iscsi_wrb, iscsi_bhs_addr_lo, pwrb,
io_task->bhs_pa.u.a32.address_lo);
AMAP_SET_BITS(struct amap_iscsi_wrb, iscsi_bhs_addr_hi, pwrb,
io_task->bhs_pa.u.a32.address_hi);
if (task->data) {
/* Check for the data_count */
dsp_value = (task->data_count) ? 1 : 0;
if (is_chip_be2_be3r(phba))
AMAP_SET_BITS(struct amap_iscsi_wrb, dsp,
pwrb, dsp_value);
else
AMAP_SET_BITS(struct amap_iscsi_wrb_v2, dsp,
pwrb, dsp_value);
/* Map addr only if there is data_count */
if (dsp_value) {
io_task->mtask_addr = dma_map_single(&phba->pcidev->dev,
task->data,
task->data_count,
DMA_TO_DEVICE);
if (dma_mapping_error(&phba->pcidev->dev,
io_task->mtask_addr))
return -ENOMEM;
io_task->mtask_data_count = task->data_count;
} else
io_task->mtask_addr = 0;
AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_addr_lo, pwrb,
lower_32_bits(io_task->mtask_addr));
AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_addr_hi, pwrb,
upper_32_bits(io_task->mtask_addr));
AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_len, pwrb,
task->data_count);
AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_last, pwrb, 1);
} else {
AMAP_SET_BITS(struct amap_iscsi_wrb, dsp, pwrb, 0);
io_task->mtask_addr = 0;
}
psgl = (struct iscsi_sge *)io_task->psgl_handle->pfrag;
AMAP_SET_BITS(struct amap_iscsi_sge, len, psgl, io_task->bhs_len);
AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, psgl,
io_task->bhs_pa.u.a32.address_hi);
AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, psgl,
io_task->bhs_pa.u.a32.address_lo);
if (task->data) {
psgl++;
AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, psgl, 0);
AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, psgl, 0);
AMAP_SET_BITS(struct amap_iscsi_sge, len, psgl, 0);
AMAP_SET_BITS(struct amap_iscsi_sge, sge_offset, psgl, 0);
AMAP_SET_BITS(struct amap_iscsi_sge, rsvd0, psgl, 0);
AMAP_SET_BITS(struct amap_iscsi_sge, last_sge, psgl, 0);
psgl++;
if (task->data) {
AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, psgl,
lower_32_bits(io_task->mtask_addr));
AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, psgl,
upper_32_bits(io_task->mtask_addr));
}
AMAP_SET_BITS(struct amap_iscsi_sge, len, psgl, 0x106);
}
AMAP_SET_BITS(struct amap_iscsi_sge, last_sge, psgl, 1);
return 0;
}
/**
* beiscsi_find_mem_req()- Find mem needed
* @phba: ptr to HBA struct
**/
static void beiscsi_find_mem_req(struct beiscsi_hba *phba)
{
uint8_t mem_descr_index, ulp_num;
unsigned int num_async_pdu_buf_pages;
unsigned int num_async_pdu_data_pages, wrb_sz_per_cxn;
unsigned int num_async_pdu_buf_sgl_pages, num_async_pdu_data_sgl_pages;
phba->params.hwi_ws_sz = sizeof(struct hwi_controller);
phba->mem_req[ISCSI_MEM_GLOBAL_HEADER] = 2 *
BE_ISCSI_PDU_HEADER_SIZE;
phba->mem_req[HWI_MEM_ADDN_CONTEXT] =
sizeof(struct hwi_context_memory);
phba->mem_req[HWI_MEM_WRB] = sizeof(struct iscsi_wrb)
* (phba->params.wrbs_per_cxn)
* phba->params.cxns_per_ctrl;
wrb_sz_per_cxn = sizeof(struct wrb_handle) *
(phba->params.wrbs_per_cxn);
phba->mem_req[HWI_MEM_WRBH] = roundup_pow_of_two((wrb_sz_per_cxn) *
phba->params.cxns_per_ctrl);
phba->mem_req[HWI_MEM_SGLH] = sizeof(struct sgl_handle) *
phba->params.icds_per_ctrl;
phba->mem_req[HWI_MEM_SGE] = sizeof(struct iscsi_sge) *
phba->params.num_sge_per_io * phba->params.icds_per_ctrl;
for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {
if (test_bit(ulp_num, &phba->fw_config.ulp_supported)) {
num_async_pdu_buf_sgl_pages =
PAGES_REQUIRED(BEISCSI_ASYNC_HDQ_SIZE(
phba, ulp_num) *
sizeof(struct phys_addr));
num_async_pdu_buf_pages =
PAGES_REQUIRED(BEISCSI_ASYNC_HDQ_SIZE(
phba, ulp_num) *
phba->params.defpdu_hdr_sz);
num_async_pdu_data_pages =
PAGES_REQUIRED(BEISCSI_ASYNC_HDQ_SIZE(
phba, ulp_num) *
phba->params.defpdu_data_sz);
num_async_pdu_data_sgl_pages =
PAGES_REQUIRED(BEISCSI_ASYNC_HDQ_SIZE(
phba, ulp_num) *
sizeof(struct phys_addr));
mem_descr_index = (HWI_MEM_TEMPLATE_HDR_ULP0 +
(ulp_num * MEM_DESCR_OFFSET));
phba->mem_req[mem_descr_index] =
BEISCSI_GET_CID_COUNT(phba, ulp_num) *
BEISCSI_TEMPLATE_HDR_PER_CXN_SIZE;
mem_descr_index = (HWI_MEM_ASYNC_HEADER_BUF_ULP0 +
(ulp_num * MEM_DESCR_OFFSET));
phba->mem_req[mem_descr_index] =
num_async_pdu_buf_pages *
PAGE_SIZE;
mem_descr_index = (HWI_MEM_ASYNC_DATA_BUF_ULP0 +
(ulp_num * MEM_DESCR_OFFSET));
phba->mem_req[mem_descr_index] =
num_async_pdu_data_pages *
PAGE_SIZE;
mem_descr_index = (HWI_MEM_ASYNC_HEADER_RING_ULP0 +
(ulp_num * MEM_DESCR_OFFSET));
phba->mem_req[mem_descr_index] =
num_async_pdu_buf_sgl_pages *
PAGE_SIZE;
mem_descr_index = (HWI_MEM_ASYNC_DATA_RING_ULP0 +
(ulp_num * MEM_DESCR_OFFSET));
phba->mem_req[mem_descr_index] =
num_async_pdu_data_sgl_pages *
PAGE_SIZE;
mem_descr_index = (HWI_MEM_ASYNC_HEADER_HANDLE_ULP0 +
(ulp_num * MEM_DESCR_OFFSET));
phba->mem_req[mem_descr_index] =
BEISCSI_ASYNC_HDQ_SIZE(phba, ulp_num) *
sizeof(struct hd_async_handle);
mem_descr_index = (HWI_MEM_ASYNC_DATA_HANDLE_ULP0 +
(ulp_num * MEM_DESCR_OFFSET));
phba->mem_req[mem_descr_index] =
BEISCSI_ASYNC_HDQ_SIZE(phba, ulp_num) *
sizeof(struct hd_async_handle);
mem_descr_index = (HWI_MEM_ASYNC_PDU_CONTEXT_ULP0 +
(ulp_num * MEM_DESCR_OFFSET));
phba->mem_req[mem_descr_index] =
sizeof(struct hd_async_context) +
(BEISCSI_ASYNC_HDQ_SIZE(phba, ulp_num) *
sizeof(struct hd_async_entry));
}
}
}
static int beiscsi_alloc_mem(struct beiscsi_hba *phba)
{
dma_addr_t bus_add;
struct hwi_controller *phwi_ctrlr;
struct be_mem_descriptor *mem_descr;
struct mem_array *mem_arr, *mem_arr_orig;
unsigned int i, j, alloc_size, curr_alloc_size;
phba->phwi_ctrlr = kzalloc(phba->params.hwi_ws_sz, GFP_KERNEL);
if (!phba->phwi_ctrlr)
return -ENOMEM;
/* Allocate memory for wrb_context */
phwi_ctrlr = phba->phwi_ctrlr;
phwi_ctrlr->wrb_context = kcalloc(phba->params.cxns_per_ctrl,
sizeof(struct hwi_wrb_context),
GFP_KERNEL);
if (!phwi_ctrlr->wrb_context) {
kfree(phba->phwi_ctrlr);
return -ENOMEM;
}
phba->init_mem = kcalloc(SE_MEM_MAX, sizeof(*mem_descr),
GFP_KERNEL);
if (!phba->init_mem) {
kfree(phwi_ctrlr->wrb_context);
kfree(phba->phwi_ctrlr);
return -ENOMEM;
}
mem_arr_orig = kmalloc_array(BEISCSI_MAX_FRAGS_INIT,
sizeof(*mem_arr_orig),
GFP_KERNEL);
if (!mem_arr_orig) {
kfree(phba->init_mem);
kfree(phwi_ctrlr->wrb_context);
kfree(phba->phwi_ctrlr);
return -ENOMEM;
}
mem_descr = phba->init_mem;
for (i = 0; i < SE_MEM_MAX; i++) {
if (!phba->mem_req[i]) {
mem_descr->mem_array = NULL;
mem_descr++;
continue;
}
j = 0;
mem_arr = mem_arr_orig;
alloc_size = phba->mem_req[i];
memset(mem_arr, 0, sizeof(struct mem_array) *
BEISCSI_MAX_FRAGS_INIT);
curr_alloc_size = min(be_max_phys_size * 1024, alloc_size);
do {
mem_arr->virtual_address =
dma_alloc_coherent(&phba->pcidev->dev,
curr_alloc_size, &bus_add, GFP_KERNEL);
if (!mem_arr->virtual_address) {
if (curr_alloc_size <= BE_MIN_MEM_SIZE)
goto free_mem;
if (curr_alloc_size -
rounddown_pow_of_two(curr_alloc_size))
curr_alloc_size = rounddown_pow_of_two
(curr_alloc_size);
else
curr_alloc_size = curr_alloc_size / 2;
} else {
mem_arr->bus_address.u.
a64.address = (__u64) bus_add;
mem_arr->size = curr_alloc_size;
alloc_size -= curr_alloc_size;
curr_alloc_size = min(be_max_phys_size *
1024, alloc_size);
j++;
mem_arr++;
}
} while (alloc_size);
mem_descr->num_elements = j;
mem_descr->size_in_bytes = phba->mem_req[i];
mem_descr->mem_array = kmalloc_array(j, sizeof(*mem_arr),
GFP_KERNEL);
if (!mem_descr->mem_array)
goto free_mem;
memcpy(mem_descr->mem_array, mem_arr_orig,
sizeof(struct mem_array) * j);
mem_descr++;
}
kfree(mem_arr_orig);
return 0;
free_mem:
mem_descr->num_elements = j;
while ((i) || (j)) {
for (j = mem_descr->num_elements; j > 0; j--) {
dma_free_coherent(&phba->pcidev->dev,
mem_descr->mem_array[j - 1].size,
mem_descr->mem_array[j - 1].
virtual_address,
(unsigned long)mem_descr->
mem_array[j - 1].
bus_address.u.a64.address);
}
if (i) {
i--;
kfree(mem_descr->mem_array);
mem_descr--;
}
}
kfree(mem_arr_orig);
kfree(phba->init_mem);
kfree(phba->phwi_ctrlr->wrb_context);
kfree(phba->phwi_ctrlr);
return -ENOMEM;
}
static int beiscsi_get_memory(struct beiscsi_hba *phba)
{
beiscsi_find_mem_req(phba);
return beiscsi_alloc_mem(phba);
}
static void iscsi_init_global_templates(struct beiscsi_hba *phba)
{
struct pdu_data_out *pdata_out;
struct pdu_nop_out *pnop_out;
struct be_mem_descriptor *mem_descr;
mem_descr = phba->init_mem;
mem_descr += ISCSI_MEM_GLOBAL_HEADER;
pdata_out =
(struct pdu_data_out *)mem_descr->mem_array[0].virtual_address;
memset(pdata_out, 0, BE_ISCSI_PDU_HEADER_SIZE);
AMAP_SET_BITS(struct amap_pdu_data_out, opcode, pdata_out,
IIOC_SCSI_DATA);
pnop_out =
(struct pdu_nop_out *)((unsigned char *)mem_descr->mem_array[0].
virtual_address + BE_ISCSI_PDU_HEADER_SIZE);
memset(pnop_out, 0, BE_ISCSI_PDU_HEADER_SIZE);
AMAP_SET_BITS(struct amap_pdu_nop_out, ttt, pnop_out, 0xFFFFFFFF);
AMAP_SET_BITS(struct amap_pdu_nop_out, f_bit, pnop_out, 1);
AMAP_SET_BITS(struct amap_pdu_nop_out, i_bit, pnop_out, 0);
}
static int beiscsi_init_wrb_handle(struct beiscsi_hba *phba)
{
struct be_mem_descriptor *mem_descr_wrbh, *mem_descr_wrb;
struct hwi_context_memory *phwi_ctxt;
struct wrb_handle *pwrb_handle = NULL;
struct hwi_controller *phwi_ctrlr;
struct hwi_wrb_context *pwrb_context;
struct iscsi_wrb *pwrb = NULL;
unsigned int num_cxn_wrbh = 0;
unsigned int num_cxn_wrb = 0, j, idx = 0, index;
mem_descr_wrbh = phba->init_mem;
mem_descr_wrbh += HWI_MEM_WRBH;
mem_descr_wrb = phba->init_mem;
mem_descr_wrb += HWI_MEM_WRB;
phwi_ctrlr = phba->phwi_ctrlr;
/* Allocate memory for WRBQ */
phwi_ctxt = phwi_ctrlr->phwi_ctxt;
phwi_ctxt->be_wrbq = kcalloc(phba->params.cxns_per_ctrl,
sizeof(struct be_queue_info),
GFP_KERNEL);
if (!phwi_ctxt->be_wrbq) {
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
"BM_%d : WRBQ Mem Alloc Failed\n");
return -ENOMEM;
}
for (index = 0; index < phba->params.cxns_per_ctrl; index++) {
pwrb_context = &phwi_ctrlr->wrb_context[index];
pwrb_context->pwrb_handle_base =
kcalloc(phba->params.wrbs_per_cxn,
sizeof(struct wrb_handle *),
GFP_KERNEL);
if (!pwrb_context->pwrb_handle_base) {
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
"BM_%d : Mem Alloc Failed. Failing to load\n");
goto init_wrb_hndl_failed;
}
pwrb_context->pwrb_handle_basestd =
kcalloc(phba->params.wrbs_per_cxn,
sizeof(struct wrb_handle *),
GFP_KERNEL);
if (!pwrb_context->pwrb_handle_basestd) {
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
"BM_%d : Mem Alloc Failed. Failing to load\n");
goto init_wrb_hndl_failed;
}
if (!num_cxn_wrbh) {
pwrb_handle =
mem_descr_wrbh->mem_array[idx].virtual_address;
num_cxn_wrbh = ((mem_descr_wrbh->mem_array[idx].size) /
((sizeof(struct wrb_handle)) *
phba->params.wrbs_per_cxn));
idx++;
}
pwrb_context->alloc_index = 0;
pwrb_context->wrb_handles_available = 0;
pwrb_context->free_index = 0;
if (num_cxn_wrbh) {
for (j = 0; j < phba->params.wrbs_per_cxn; j++) {
pwrb_context->pwrb_handle_base[j] = pwrb_handle;
pwrb_context->pwrb_handle_basestd[j] =
pwrb_handle;
pwrb_context->wrb_handles_available++;
pwrb_handle->wrb_index = j;
pwrb_handle++;
}
num_cxn_wrbh--;
}
spin_lock_init(&pwrb_context->wrb_lock);
}
idx = 0;
for (index = 0; index < phba->params.cxns_per_ctrl; index++) {
pwrb_context = &phwi_ctrlr->wrb_context[index];
if (!num_cxn_wrb) {
pwrb = mem_descr_wrb->mem_array[idx].virtual_address;
num_cxn_wrb = (mem_descr_wrb->mem_array[idx].size) /
((sizeof(struct iscsi_wrb) *
phba->params.wrbs_per_cxn));
idx++;
}
if (num_cxn_wrb) {
for (j = 0; j < phba->params.wrbs_per_cxn; j++) {
pwrb_handle = pwrb_context->pwrb_handle_base[j];
pwrb_handle->pwrb = pwrb;
pwrb++;
}
num_cxn_wrb--;
}
}
return 0;
init_wrb_hndl_failed:
for (j = index; j > 0; j--) {
pwrb_context = &phwi_ctrlr->wrb_context[j];
kfree(pwrb_context->pwrb_handle_base);
kfree(pwrb_context->pwrb_handle_basestd);
}
kfree(phwi_ctxt->be_wrbq);
return -ENOMEM;
}
static int hwi_init_async_pdu_ctx(struct beiscsi_hba *phba)
{
uint8_t ulp_num;
struct hwi_controller *phwi_ctrlr;
struct hba_parameters *p = &phba->params;
struct hd_async_context *pasync_ctx;
struct hd_async_handle *pasync_header_h, *pasync_data_h;
unsigned int index, idx, num_per_mem, num_async_data;
struct be_mem_descriptor *mem_descr;
for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {
if (test_bit(ulp_num, &phba->fw_config.ulp_supported)) {
/* get async_ctx for each ULP */
mem_descr = (struct be_mem_descriptor *)phba->init_mem;
mem_descr += (HWI_MEM_ASYNC_PDU_CONTEXT_ULP0 +
(ulp_num * MEM_DESCR_OFFSET));
phwi_ctrlr = phba->phwi_ctrlr;
phwi_ctrlr->phwi_ctxt->pasync_ctx[ulp_num] =
(struct hd_async_context *)
mem_descr->mem_array[0].virtual_address;
pasync_ctx = phwi_ctrlr->phwi_ctxt->pasync_ctx[ulp_num];
memset(pasync_ctx, 0, sizeof(*pasync_ctx));
pasync_ctx->async_entry =
(struct hd_async_entry *)
((long unsigned int)pasync_ctx +
sizeof(struct hd_async_context));
pasync_ctx->num_entries = BEISCSI_ASYNC_HDQ_SIZE(phba,
ulp_num);
/* setup header buffers */
mem_descr = (struct be_mem_descriptor *)phba->init_mem;
mem_descr += HWI_MEM_ASYNC_HEADER_BUF_ULP0 +
(ulp_num * MEM_DESCR_OFFSET);
if (mem_descr->mem_array[0].virtual_address) {
beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
"BM_%d : hwi_init_async_pdu_ctx"
" HWI_MEM_ASYNC_HEADER_BUF_ULP%d va=%p\n",
ulp_num,
mem_descr->mem_array[0].
virtual_address);
} else
beiscsi_log(phba, KERN_WARNING,
BEISCSI_LOG_INIT,
"BM_%d : No Virtual address for ULP : %d\n",
ulp_num);
pasync_ctx->async_header.pi = 0;
pasync_ctx->async_header.buffer_size = p->defpdu_hdr_sz;
pasync_ctx->async_header.va_base =
mem_descr->mem_array[0].virtual_address;
pasync_ctx->async_header.pa_base.u.a64.address =
mem_descr->mem_array[0].
bus_address.u.a64.address;
/* setup header buffer sgls */
mem_descr = (struct be_mem_descriptor *)phba->init_mem;
mem_descr += HWI_MEM_ASYNC_HEADER_RING_ULP0 +
(ulp_num * MEM_DESCR_OFFSET);
if (mem_descr->mem_array[0].virtual_address) {
beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
"BM_%d : hwi_init_async_pdu_ctx"
" HWI_MEM_ASYNC_HEADER_RING_ULP%d va=%p\n",
ulp_num,
mem_descr->mem_array[0].
virtual_address);
} else
beiscsi_log(phba, KERN_WARNING,
BEISCSI_LOG_INIT,
"BM_%d : No Virtual address for ULP : %d\n",
ulp_num);
pasync_ctx->async_header.ring_base =
mem_descr->mem_array[0].virtual_address;
/* setup header buffer handles */
mem_descr = (struct be_mem_descriptor *)phba->init_mem;
mem_descr += HWI_MEM_ASYNC_HEADER_HANDLE_ULP0 +
(ulp_num * MEM_DESCR_OFFSET);
if (mem_descr->mem_array[0].virtual_address) {
beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
"BM_%d : hwi_init_async_pdu_ctx"
" HWI_MEM_ASYNC_HEADER_HANDLE_ULP%d va=%p\n",
ulp_num,
mem_descr->mem_array[0].
virtual_address);
} else
beiscsi_log(phba, KERN_WARNING,
BEISCSI_LOG_INIT,
"BM_%d : No Virtual address for ULP : %d\n",
ulp_num);
pasync_ctx->async_header.handle_base =
mem_descr->mem_array[0].virtual_address;
/* setup data buffer sgls */
mem_descr = (struct be_mem_descriptor *)phba->init_mem;
mem_descr += HWI_MEM_ASYNC_DATA_RING_ULP0 +
(ulp_num * MEM_DESCR_OFFSET);
if (mem_descr->mem_array[0].virtual_address) {
beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
"BM_%d : hwi_init_async_pdu_ctx"
" HWI_MEM_ASYNC_DATA_RING_ULP%d va=%p\n",
ulp_num,
mem_descr->mem_array[0].
virtual_address);
} else
beiscsi_log(phba, KERN_WARNING,
BEISCSI_LOG_INIT,
"BM_%d : No Virtual address for ULP : %d\n",
ulp_num);
pasync_ctx->async_data.ring_base =
mem_descr->mem_array[0].virtual_address;
/* setup data buffer handles */
mem_descr = (struct be_mem_descriptor *)phba->init_mem;
mem_descr += HWI_MEM_ASYNC_DATA_HANDLE_ULP0 +
(ulp_num * MEM_DESCR_OFFSET);
if (!mem_descr->mem_array[0].virtual_address)
beiscsi_log(phba, KERN_WARNING,
BEISCSI_LOG_INIT,
"BM_%d : No Virtual address for ULP : %d\n",
ulp_num);
pasync_ctx->async_data.handle_base =
mem_descr->mem_array[0].virtual_address;
pasync_header_h =
(struct hd_async_handle *)
pasync_ctx->async_header.handle_base;
pasync_data_h =
(struct hd_async_handle *)
pasync_ctx->async_data.handle_base;
/* setup data buffers */
mem_descr = (struct be_mem_descriptor *)phba->init_mem;
mem_descr += HWI_MEM_ASYNC_DATA_BUF_ULP0 +
(ulp_num * MEM_DESCR_OFFSET);
if (mem_descr->mem_array[0].virtual_address) {
beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
"BM_%d : hwi_init_async_pdu_ctx"
" HWI_MEM_ASYNC_DATA_BUF_ULP%d va=%p\n",
ulp_num,
mem_descr->mem_array[0].
virtual_address);
} else
beiscsi_log(phba, KERN_WARNING,
BEISCSI_LOG_INIT,
"BM_%d : No Virtual address for ULP : %d\n",
ulp_num);
idx = 0;
pasync_ctx->async_data.pi = 0;
pasync_ctx->async_data.buffer_size = p->defpdu_data_sz;
pasync_ctx->async_data.va_base =
mem_descr->mem_array[idx].virtual_address;
pasync_ctx->async_data.pa_base.u.a64.address =
mem_descr->mem_array[idx].
bus_address.u.a64.address;
num_async_data = ((mem_descr->mem_array[idx].size) /
phba->params.defpdu_data_sz);
num_per_mem = 0;
for (index = 0; index < BEISCSI_ASYNC_HDQ_SIZE
(phba, ulp_num); index++) {
pasync_header_h->cri = -1;
pasync_header_h->is_header = 1;
pasync_header_h->index = index;
INIT_LIST_HEAD(&pasync_header_h->link);
pasync_header_h->pbuffer =
(void *)((unsigned long)
(pasync_ctx->
async_header.va_base) +
(p->defpdu_hdr_sz * index));
pasync_header_h->pa.u.a64.address =
pasync_ctx->async_header.pa_base.u.a64.
address + (p->defpdu_hdr_sz * index);
pasync_ctx->async_entry[index].header =
pasync_header_h;
pasync_header_h++;
INIT_LIST_HEAD(&pasync_ctx->async_entry[index].
wq.list);
pasync_data_h->cri = -1;
pasync_data_h->is_header = 0;
pasync_data_h->index = index;
INIT_LIST_HEAD(&pasync_data_h->link);
if (!num_async_data) {
num_per_mem = 0;
idx++;
pasync_ctx->async_data.va_base =
mem_descr->mem_array[idx].
virtual_address;
pasync_ctx->async_data.pa_base.u.
a64.address =
mem_descr->mem_array[idx].
bus_address.u.a64.address;
num_async_data =
((mem_descr->mem_array[idx].
size) /
phba->params.defpdu_data_sz);
}
pasync_data_h->pbuffer =
(void *)((unsigned long)
(pasync_ctx->async_data.va_base) +
(p->defpdu_data_sz * num_per_mem));
pasync_data_h->pa.u.a64.address =
pasync_ctx->async_data.pa_base.u.a64.
address + (p->defpdu_data_sz *
num_per_mem);
num_per_mem++;
num_async_data--;
pasync_ctx->async_entry[index].data =
pasync_data_h;
pasync_data_h++;
}
}
}
return 0;
}
static int
be_sgl_create_contiguous(void *virtual_address,
u64 physical_address, u32 length,
struct be_dma_mem *sgl)
{
WARN_ON(!virtual_address);
WARN_ON(!physical_address);
WARN_ON(!length);
WARN_ON(!sgl);
sgl->va = virtual_address;
sgl->dma = (unsigned long)physical_address;
sgl->size = length;
return 0;
}
static void be_sgl_destroy_contiguous(struct be_dma_mem *sgl)
{
memset(sgl, 0, sizeof(*sgl));
}
static void
hwi_build_be_sgl_arr(struct beiscsi_hba *phba,
struct mem_array *pmem, struct be_dma_mem *sgl)
{
if (sgl->va)
be_sgl_destroy_contiguous(sgl);
be_sgl_create_contiguous(pmem->virtual_address,
pmem->bus_address.u.a64.address,
pmem->size, sgl);
}
static void
hwi_build_be_sgl_by_offset(struct beiscsi_hba *phba,
struct mem_array *pmem, struct be_dma_mem *sgl)
{
if (sgl->va)
be_sgl_destroy_contiguous(sgl);
be_sgl_create_contiguous((unsigned char *)pmem->virtual_address,
pmem->bus_address.u.a64.address,
pmem->size, sgl);
}
static int be_fill_queue(struct be_queue_info *q,
u16 len, u16 entry_size, void *vaddress)
{
struct be_dma_mem *mem = &q->dma_mem;
memset(q, 0, sizeof(*q));
q->len = len;
q->entry_size = entry_size;
mem->size = len * entry_size;
mem->va = vaddress;
if (!mem->va)
return -ENOMEM;
memset(mem->va, 0, mem->size);
return 0;
}
static int beiscsi_create_eqs(struct beiscsi_hba *phba,
struct hwi_context_memory *phwi_context)
{
int ret = -ENOMEM, eq_for_mcc;
unsigned int i, num_eq_pages;
struct be_queue_info *eq;
struct be_dma_mem *mem;
void *eq_vaddress;
dma_addr_t paddr;
num_eq_pages = PAGES_REQUIRED(phba->params.num_eq_entries *
sizeof(struct be_eq_entry));
if (phba->pcidev->msix_enabled)
eq_for_mcc = 1;
else
eq_for_mcc = 0;
for (i = 0; i < (phba->num_cpus + eq_for_mcc); i++) {
eq = &phwi_context->be_eq[i].q;
mem = &eq->dma_mem;
phwi_context->be_eq[i].phba = phba;
eq_vaddress = dma_alloc_coherent(&phba->pcidev->dev,
num_eq_pages * PAGE_SIZE,
&paddr, GFP_KERNEL);
if (!eq_vaddress) {
ret = -ENOMEM;
goto create_eq_error;
}
mem->va = eq_vaddress;
ret = be_fill_queue(eq, phba->params.num_eq_entries,
sizeof(struct be_eq_entry), eq_vaddress);
if (ret) {
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
"BM_%d : be_fill_queue Failed for EQ\n");
goto create_eq_error;
}
mem->dma = paddr;
ret = beiscsi_cmd_eq_create(&phba->ctrl, eq,
BEISCSI_EQ_DELAY_DEF);
if (ret) {
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
"BM_%d : beiscsi_cmd_eq_create Failed for EQ\n");
goto create_eq_error;
}
beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
"BM_%d : eqid = %d\n",
phwi_context->be_eq[i].q.id);
}
return 0;
create_eq_error:
for (i = 0; i < (phba->num_cpus + eq_for_mcc); i++) {
eq = &phwi_context->be_eq[i].q;
mem = &eq->dma_mem;
if (mem->va)
dma_free_coherent(&phba->pcidev->dev, num_eq_pages
* PAGE_SIZE,
mem->va, mem->dma);
}
return ret;
}
static int beiscsi_create_cqs(struct beiscsi_hba *phba,
struct hwi_context_memory *phwi_context)
{
unsigned int i, num_cq_pages;
struct be_queue_info *cq, *eq;
struct be_dma_mem *mem;
struct be_eq_obj *pbe_eq;
void *cq_vaddress;
int ret = -ENOMEM;
dma_addr_t paddr;
num_cq_pages = PAGES_REQUIRED(phba->params.num_cq_entries *
sizeof(struct sol_cqe));
for (i = 0; i < phba->num_cpus; i++) {
cq = &phwi_context->be_cq[i];
eq = &phwi_context->be_eq[i].q;
pbe_eq = &phwi_context->be_eq[i];
pbe_eq->cq = cq;
pbe_eq->phba = phba;
mem = &cq->dma_mem;
cq_vaddress = dma_alloc_coherent(&phba->pcidev->dev,
num_cq_pages * PAGE_SIZE,
&paddr, GFP_KERNEL);
if (!cq_vaddress) {
ret = -ENOMEM;
goto create_cq_error;
}
ret = be_fill_queue(cq, phba->params.num_cq_entries,
sizeof(struct sol_cqe), cq_vaddress);
if (ret) {
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
"BM_%d : be_fill_queue Failed for ISCSI CQ\n");
goto create_cq_error;
}
mem->dma = paddr;
ret = beiscsi_cmd_cq_create(&phba->ctrl, cq, eq, false,
false, 0);
if (ret) {
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
"BM_%d : beiscsi_cmd_eq_create Failed for ISCSI CQ\n");
goto create_cq_error;
}
beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
"BM_%d : iscsi cq_id is %d for eq_id %d\n"
"iSCSI CQ CREATED\n", cq->id, eq->id);
}
return 0;
create_cq_error:
for (i = 0; i < phba->num_cpus; i++) {
cq = &phwi_context->be_cq[i];
mem = &cq->dma_mem;
if (mem->va)
dma_free_coherent(&phba->pcidev->dev, num_cq_pages
* PAGE_SIZE,
mem->va, mem->dma);
}
return ret;
}
static int
beiscsi_create_def_hdr(struct beiscsi_hba *phba,
struct hwi_context_memory *phwi_context,
struct hwi_controller *phwi_ctrlr,
unsigned int def_pdu_ring_sz, uint8_t ulp_num)
{
unsigned int idx;
int ret;
struct be_queue_info *dq, *cq;
struct be_dma_mem *mem;
struct be_mem_descriptor *mem_descr;
void *dq_vaddress;
idx = 0;
dq = &phwi_context->be_def_hdrq[ulp_num];
cq = &phwi_context->be_cq[0];
mem = &dq->dma_mem;
mem_descr = phba->init_mem;
mem_descr += HWI_MEM_ASYNC_HEADER_RING_ULP0 +
(ulp_num * MEM_DESCR_OFFSET);
dq_vaddress = mem_descr->mem_array[idx].virtual_address;
ret = be_fill_queue(dq, mem_descr->mem_array[0].size /
sizeof(struct phys_addr),
sizeof(struct phys_addr), dq_vaddress);
if (ret) {
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
"BM_%d : be_fill_queue Failed for DEF PDU HDR on ULP : %d\n",
ulp_num);
return ret;
}
mem->dma = (unsigned long)mem_descr->mem_array[idx].
bus_address.u.a64.address;
ret = be_cmd_create_default_pdu_queue(&phba->ctrl, cq, dq,
def_pdu_ring_sz,
phba->params.defpdu_hdr_sz,
BEISCSI_DEFQ_HDR, ulp_num);
if (ret) {
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
"BM_%d : be_cmd_create_default_pdu_queue Failed DEFHDR on ULP : %d\n",
ulp_num);
return ret;
}
beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
"BM_%d : iscsi hdr def pdu id for ULP : %d is %d\n",
ulp_num,
phwi_context->be_def_hdrq[ulp_num].id);
return 0;
}
static int
beiscsi_create_def_data(struct beiscsi_hba *phba,
struct hwi_context_memory *phwi_context,
struct hwi_controller *phwi_ctrlr,
unsigned int def_pdu_ring_sz, uint8_t ulp_num)
{
unsigned int idx;
int ret;
struct be_queue_info *dataq, *cq;
struct be_dma_mem *mem;
struct be_mem_descriptor *mem_descr;
void *dq_vaddress;
idx = 0;
dataq = &phwi_context->be_def_dataq[ulp_num];
cq = &phwi_context->be_cq[0];
mem = &dataq->dma_mem;
mem_descr = phba->init_mem;
mem_descr += HWI_MEM_ASYNC_DATA_RING_ULP0 +
(ulp_num * MEM_DESCR_OFFSET);
dq_vaddress = mem_descr->mem_array[idx].virtual_address;
ret = be_fill_queue(dataq, mem_descr->mem_array[0].size /
sizeof(struct phys_addr),
sizeof(struct phys_addr), dq_vaddress);
if (ret) {
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
"BM_%d : be_fill_queue Failed for DEF PDU "
"DATA on ULP : %d\n",
ulp_num);
return ret;
}
mem->dma = (unsigned long)mem_descr->mem_array[idx].
bus_address.u.a64.address;
ret = be_cmd_create_default_pdu_queue(&phba->ctrl, cq, dataq,
def_pdu_ring_sz,
phba->params.defpdu_data_sz,
BEISCSI_DEFQ_DATA, ulp_num);
if (ret) {
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
"BM_%d be_cmd_create_default_pdu_queue"
" Failed for DEF PDU DATA on ULP : %d\n",
ulp_num);
return ret;
}
beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
"BM_%d : iscsi def data id on ULP : %d is %d\n",
ulp_num,
phwi_context->be_def_dataq[ulp_num].id);
beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
"BM_%d : DEFAULT PDU DATA RING CREATED on ULP : %d\n",
ulp_num);
return 0;
}
static int
beiscsi_post_template_hdr(struct beiscsi_hba *phba)
{
struct be_mem_descriptor *mem_descr;
struct mem_array *pm_arr;
struct be_dma_mem sgl;
int status, ulp_num;
for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {
if (test_bit(ulp_num, &phba->fw_config.ulp_supported)) {
mem_descr = (struct be_mem_descriptor *)phba->init_mem;
mem_descr += HWI_MEM_TEMPLATE_HDR_ULP0 +
(ulp_num * MEM_DESCR_OFFSET);
pm_arr = mem_descr->mem_array;
hwi_build_be_sgl_arr(phba, pm_arr, &sgl);
status = be_cmd_iscsi_post_template_hdr(
&phba->ctrl, &sgl);
if (status != 0) {
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
"BM_%d : Post Template HDR Failed for "
"ULP_%d\n", ulp_num);
return status;
}
beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
"BM_%d : Template HDR Pages Posted for "
"ULP_%d\n", ulp_num);
}
}
return 0;
}
static int
beiscsi_post_pages(struct beiscsi_hba *phba)
{
struct be_mem_descriptor *mem_descr;
struct mem_array *pm_arr;
unsigned int page_offset, i;
struct be_dma_mem sgl;
int status, ulp_num = 0;
mem_descr = phba->init_mem;
mem_descr += HWI_MEM_SGE;
pm_arr = mem_descr->mem_array;
for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++)
if (test_bit(ulp_num, &phba->fw_config.ulp_supported))
break;
page_offset = (sizeof(struct iscsi_sge) * phba->params.num_sge_per_io *
phba->fw_config.iscsi_icd_start[ulp_num]) / PAGE_SIZE;
for (i = 0; i < mem_descr->num_elements; i++) {
hwi_build_be_sgl_arr(phba, pm_arr, &sgl);
status = be_cmd_iscsi_post_sgl_pages(&phba->ctrl, &sgl,
page_offset,
(pm_arr->size / PAGE_SIZE));
page_offset += pm_arr->size / PAGE_SIZE;
if (status != 0) {
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
"BM_%d : post sgl failed.\n");
return status;
}
pm_arr++;
}
beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
"BM_%d : POSTED PAGES\n");
return 0;
}
static void be_queue_free(struct beiscsi_hba *phba, struct be_queue_info *q)
{
struct be_dma_mem *mem = &q->dma_mem;
if (mem->va) {
dma_free_coherent(&phba->pcidev->dev, mem->size,
mem->va, mem->dma);
mem->va = NULL;
}
}
static int be_queue_alloc(struct beiscsi_hba *phba, struct be_queue_info *q,
u16 len, u16 entry_size)
{
struct be_dma_mem *mem = &q->dma_mem;
memset(q, 0, sizeof(*q));
q->len = len;
q->entry_size = entry_size;
mem->size = len * entry_size;
mem->va = dma_alloc_coherent(&phba->pcidev->dev, mem->size, &mem->dma,
GFP_KERNEL);
if (!mem->va)
return -ENOMEM;
return 0;
}
static int
beiscsi_create_wrb_rings(struct beiscsi_hba *phba,
struct hwi_context_memory *phwi_context,
struct hwi_controller *phwi_ctrlr)
{
unsigned int num_wrb_rings;
u64 pa_addr_lo;
unsigned int idx, num, i, ulp_num;
struct mem_array *pwrb_arr;
void *wrb_vaddr;
struct be_dma_mem sgl;
struct be_mem_descriptor *mem_descr;
struct hwi_wrb_context *pwrb_context;
int status;
uint8_t ulp_count = 0, ulp_base_num = 0;
uint16_t cid_count_ulp[BEISCSI_ULP_COUNT] = { 0 };
idx = 0;
mem_descr = phba->init_mem;
mem_descr += HWI_MEM_WRB;
pwrb_arr = kmalloc_array(phba->params.cxns_per_ctrl,
sizeof(*pwrb_arr),
GFP_KERNEL);
if (!pwrb_arr) {
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
"BM_%d : Memory alloc failed in create wrb ring.\n");
return -ENOMEM;
}
wrb_vaddr = mem_descr->mem_array[idx].virtual_address;
pa_addr_lo = mem_descr->mem_array[idx].bus_address.u.a64.address;
num_wrb_rings = mem_descr->mem_array[idx].size /
(phba->params.wrbs_per_cxn * sizeof(struct iscsi_wrb));
for (num = 0; num < phba->params.cxns_per_ctrl; num++) {
if (num_wrb_rings) {
pwrb_arr[num].virtual_address = wrb_vaddr;
pwrb_arr[num].bus_address.u.a64.address = pa_addr_lo;
pwrb_arr[num].size = phba->params.wrbs_per_cxn *
sizeof(struct iscsi_wrb);
wrb_vaddr += pwrb_arr[num].size;
pa_addr_lo += pwrb_arr[num].size;
num_wrb_rings--;
} else {
idx++;
wrb_vaddr = mem_descr->mem_array[idx].virtual_address;
pa_addr_lo = mem_descr->mem_array[idx].
bus_address.u.a64.address;
num_wrb_rings = mem_descr->mem_array[idx].size /
(phba->params.wrbs_per_cxn *
sizeof(struct iscsi_wrb));
pwrb_arr[num].virtual_address = wrb_vaddr;
pwrb_arr[num].bus_address.u.a64.address = pa_addr_lo;
pwrb_arr[num].size = phba->params.wrbs_per_cxn *
sizeof(struct iscsi_wrb);
wrb_vaddr += pwrb_arr[num].size;
pa_addr_lo += pwrb_arr[num].size;
num_wrb_rings--;
}
}
/* Get the ULP Count */
for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++)
if (test_bit(ulp_num, &phba->fw_config.ulp_supported)) {
ulp_count++;
ulp_base_num = ulp_num;
cid_count_ulp[ulp_num] =
BEISCSI_GET_CID_COUNT(phba, ulp_num);
}
for (i = 0; i < phba->params.cxns_per_ctrl; i++) {
if (ulp_count > 1) {
ulp_base_num = (ulp_base_num + 1) % BEISCSI_ULP_COUNT;
if (!cid_count_ulp[ulp_base_num])
ulp_base_num = (ulp_base_num + 1) %
BEISCSI_ULP_COUNT;
cid_count_ulp[ulp_base_num]--;
}
hwi_build_be_sgl_by_offset(phba, &pwrb_arr[i], &sgl);
status = be_cmd_wrbq_create(&phba->ctrl, &sgl,
&phwi_context->be_wrbq[i],
&phwi_ctrlr->wrb_context[i],
ulp_base_num);
if (status != 0) {
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
"BM_%d : wrbq create failed.");
kfree(pwrb_arr);
return status;
}
pwrb_context = &phwi_ctrlr->wrb_context[i];
BE_SET_CID_TO_CRI(i, pwrb_context->cid);
}
kfree(pwrb_arr);
return 0;
}
static void free_wrb_handles(struct beiscsi_hba *phba)
{
unsigned int index;
struct hwi_controller *phwi_ctrlr;
struct hwi_wrb_context *pwrb_context;
phwi_ctrlr = phba->phwi_ctrlr;
for (index = 0; index < phba->params.cxns_per_ctrl; index++) {
pwrb_context = &phwi_ctrlr->wrb_context[index];
kfree(pwrb_context->pwrb_handle_base);
kfree(pwrb_context->pwrb_handle_basestd);
}
}
static void be_mcc_queues_destroy(struct beiscsi_hba *phba)
{
struct be_ctrl_info *ctrl = &phba->ctrl;
struct be_dma_mem *ptag_mem;
struct be_queue_info *q;
int i, tag;
q = &phba->ctrl.mcc_obj.q;
for (i = 0; i < MAX_MCC_CMD; i++) {
tag = i + 1;
if (!test_bit(MCC_TAG_STATE_RUNNING,
&ctrl->ptag_state[tag].tag_state))
continue;
if (test_bit(MCC_TAG_STATE_TIMEOUT,
&ctrl->ptag_state[tag].tag_state)) {
ptag_mem = &ctrl->ptag_state[tag].tag_mem_state;
if (ptag_mem->size) {
dma_free_coherent(&ctrl->pdev->dev,
ptag_mem->size,
ptag_mem->va,
ptag_mem->dma);
ptag_mem->size = 0;
}
continue;
}
/**
* If MCC is still active and waiting then wake up the process.
* We are here only because port is going offline. The process
* sees that (BEISCSI_HBA_ONLINE is cleared) and EIO error is
* returned for the operation and allocated memory cleaned up.
*/
if (waitqueue_active(&ctrl->mcc_wait[tag])) {
ctrl->mcc_tag_status[tag] = MCC_STATUS_FAILED;
ctrl->mcc_tag_status[tag] |= CQE_VALID_MASK;
wake_up_interruptible(&ctrl->mcc_wait[tag]);
/*
* Control tag info gets reinitialized in enable
* so wait for the process to clear running state.
*/
while (test_bit(MCC_TAG_STATE_RUNNING,
&ctrl->ptag_state[tag].tag_state))
schedule_timeout_uninterruptible(HZ);
}
/**
* For MCC with tag_states MCC_TAG_STATE_ASYNC and
* MCC_TAG_STATE_IGNORE nothing needs to done.
*/
}
if (q->created) {
beiscsi_cmd_q_destroy(ctrl, q, QTYPE_MCCQ);
be_queue_free(phba, q);
}
q = &phba->ctrl.mcc_obj.cq;
if (q->created) {
beiscsi_cmd_q_destroy(ctrl, q, QTYPE_CQ);
be_queue_free(phba, q);
}
}
static int be_mcc_queues_create(struct beiscsi_hba *phba,
struct hwi_context_memory *phwi_context)
{
struct be_queue_info *q, *cq;
struct be_ctrl_info *ctrl = &phba->ctrl;
/* Alloc MCC compl queue */
cq = &phba->ctrl.mcc_obj.cq;
if (be_queue_alloc(phba, cq, MCC_CQ_LEN,
sizeof(struct be_mcc_compl)))
goto err;
/* Ask BE to create MCC compl queue; */
if (phba->pcidev->msix_enabled) {
if (beiscsi_cmd_cq_create(ctrl, cq,
&phwi_context->be_eq[phba->num_cpus].q,
false, true, 0))
goto mcc_cq_free;
} else {
if (beiscsi_cmd_cq_create(ctrl, cq, &phwi_context->be_eq[0].q,
false, true, 0))
goto mcc_cq_free;
}
/* Alloc MCC queue */
q = &phba->ctrl.mcc_obj.q;
if (be_queue_alloc(phba, q, MCC_Q_LEN, sizeof(struct be_mcc_wrb)))
goto mcc_cq_destroy;
/* Ask BE to create MCC queue */
if (beiscsi_cmd_mccq_create(phba, q, cq))
goto mcc_q_free;
return 0;
mcc_q_free:
be_queue_free(phba, q);
mcc_cq_destroy:
beiscsi_cmd_q_destroy(ctrl, cq, QTYPE_CQ);
mcc_cq_free:
be_queue_free(phba, cq);
err:
return -ENOMEM;
}
static void be2iscsi_enable_msix(struct beiscsi_hba *phba)
{
int nvec = 1;
switch (phba->generation) {
case BE_GEN2:
case BE_GEN3:
nvec = BEISCSI_MAX_NUM_CPUS + 1;
break;
case BE_GEN4:
nvec = phba->fw_config.eqid_count;
break;
default:
nvec = 2;
break;
}
/* if eqid_count == 1 fall back to INTX */
if (enable_msix && nvec > 1) {
struct irq_affinity desc = { .post_vectors = 1 };
if (pci_alloc_irq_vectors_affinity(phba->pcidev, 2, nvec,
PCI_IRQ_MSIX | PCI_IRQ_AFFINITY, &desc) < 0) {
phba->num_cpus = nvec - 1;
return;
}
}
phba->num_cpus = 1;
}
static void hwi_purge_eq(struct beiscsi_hba *phba)
{
struct hwi_controller *phwi_ctrlr;
struct hwi_context_memory *phwi_context;
struct be_queue_info *eq;
struct be_eq_entry *eqe = NULL;
int i, eq_msix;
unsigned int num_processed;
if (beiscsi_hba_in_error(phba))
return;
phwi_ctrlr = phba->phwi_ctrlr;
phwi_context = phwi_ctrlr->phwi_ctxt;
if (phba->pcidev->msix_enabled)
eq_msix = 1;
else
eq_msix = 0;
for (i = 0; i < (phba->num_cpus + eq_msix); i++) {
eq = &phwi_context->be_eq[i].q;
eqe = queue_tail_node(eq);
num_processed = 0;
while (eqe->dw[offsetof(struct amap_eq_entry, valid) / 32]
& EQE_VALID_MASK) {
AMAP_SET_BITS(struct amap_eq_entry, valid, eqe, 0);
queue_tail_inc(eq);
eqe = queue_tail_node(eq);
num_processed++;
}
if (num_processed)
hwi_ring_eq_db(phba, eq->id, 1, num_processed, 1, 1);
}
}
static void hwi_cleanup_port(struct beiscsi_hba *phba)
{
struct be_queue_info *q;
struct be_ctrl_info *ctrl = &phba->ctrl;
struct hwi_controller *phwi_ctrlr;
struct hwi_context_memory *phwi_context;
int i, eq_for_mcc, ulp_num;
for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++)
if (test_bit(ulp_num, &phba->fw_config.ulp_supported))
beiscsi_cmd_iscsi_cleanup(phba, ulp_num);
/**
* Purge all EQ entries that may have been left out. This is to
* workaround a problem we've seen occasionally where driver gets an
* interrupt with EQ entry bit set after stopping the controller.
*/
hwi_purge_eq(phba);
phwi_ctrlr = phba->phwi_ctrlr;
phwi_context = phwi_ctrlr->phwi_ctxt;
be_cmd_iscsi_remove_template_hdr(ctrl);
for (i = 0; i < phba->params.cxns_per_ctrl; i++) {
q = &phwi_context->be_wrbq[i];
if (q->created)
beiscsi_cmd_q_destroy(ctrl, q, QTYPE_WRBQ);
}
kfree(phwi_context->be_wrbq);
free_wrb_handles(phba);
for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {
if (test_bit(ulp_num, &phba->fw_config.ulp_supported)) {
q = &phwi_context->be_def_hdrq[ulp_num];
if (q->created)
beiscsi_cmd_q_destroy(ctrl, q, QTYPE_DPDUQ);
q = &phwi_context->be_def_dataq[ulp_num];
if (q->created)
beiscsi_cmd_q_destroy(ctrl, q, QTYPE_DPDUQ);
}
}
beiscsi_cmd_q_destroy(ctrl, NULL, QTYPE_SGL);
for (i = 0; i < (phba->num_cpus); i++) {
q = &phwi_context->be_cq[i];
if (q->created) {
be_queue_free(phba, q);
beiscsi_cmd_q_destroy(ctrl, q, QTYPE_CQ);
}
}
be_mcc_queues_destroy(phba);
if (phba->pcidev->msix_enabled)
eq_for_mcc = 1;
else
eq_for_mcc = 0;
for (i = 0; i < (phba->num_cpus + eq_for_mcc); i++) {
q = &phwi_context->be_eq[i].q;
if (q->created) {
be_queue_free(phba, q);
beiscsi_cmd_q_destroy(ctrl, q, QTYPE_EQ);
}
}
/* this ensures complete FW cleanup */
beiscsi_cmd_function_reset(phba);
/* last communication, indicate driver is unloading */
beiscsi_cmd_special_wrb(&phba->ctrl, 0);
}
static int hwi_init_port(struct beiscsi_hba *phba)
{
struct hwi_controller *phwi_ctrlr;
struct hwi_context_memory *phwi_context;
unsigned int def_pdu_ring_sz;
struct be_ctrl_info *ctrl = &phba->ctrl;
int status, ulp_num;
u16 nbufs;
phwi_ctrlr = phba->phwi_ctrlr;
phwi_context = phwi_ctrlr->phwi_ctxt;
/* set port optic state to unknown */
phba->optic_state = 0xff;
status = beiscsi_create_eqs(phba, phwi_context);
if (status != 0) {
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
"BM_%d : EQ not created\n");
goto error;
}
status = be_mcc_queues_create(phba, phwi_context);
if (status != 0)
goto error;
status = beiscsi_check_supported_fw(ctrl, phba);
if (status != 0) {
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
"BM_%d : Unsupported fw version\n");
goto error;
}
status = beiscsi_create_cqs(phba, phwi_context);
if (status != 0) {
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
"BM_%d : CQ not created\n");
goto error;
}
for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {
if (test_bit(ulp_num, &phba->fw_config.ulp_supported)) {
nbufs = phwi_context->pasync_ctx[ulp_num]->num_entries;
def_pdu_ring_sz = nbufs * sizeof(struct phys_addr);
status = beiscsi_create_def_hdr(phba, phwi_context,
phwi_ctrlr,
def_pdu_ring_sz,
ulp_num);
if (status != 0) {
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
"BM_%d : Default Header not created for ULP : %d\n",
ulp_num);
goto error;
}
status = beiscsi_create_def_data(phba, phwi_context,
phwi_ctrlr,
def_pdu_ring_sz,
ulp_num);
if (status != 0) {
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
"BM_%d : Default Data not created for ULP : %d\n",
ulp_num);
goto error;
}
/**
* Now that the default PDU rings have been created,
* let EP know about it.
*/
beiscsi_hdq_post_handles(phba, BEISCSI_DEFQ_HDR,
ulp_num, nbufs);
beiscsi_hdq_post_handles(phba, BEISCSI_DEFQ_DATA,
ulp_num, nbufs);
}
}
status = beiscsi_post_pages(phba);
if (status != 0) {
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
"BM_%d : Post SGL Pages Failed\n");
goto error;
}
status = beiscsi_post_template_hdr(phba);
if (status != 0) {
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
"BM_%d : Template HDR Posting for CXN Failed\n");
}
status = beiscsi_create_wrb_rings(phba, phwi_context, phwi_ctrlr);
if (status != 0) {
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
"BM_%d : WRB Rings not created\n");
goto error;
}
for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {
uint16_t async_arr_idx = 0;
if (test_bit(ulp_num, &phba->fw_config.ulp_supported)) {
uint16_t cri = 0;
struct hd_async_context *pasync_ctx;
pasync_ctx = HWI_GET_ASYNC_PDU_CTX(
phwi_ctrlr, ulp_num);
for (cri = 0; cri <
phba->params.cxns_per_ctrl; cri++) {
if (ulp_num == BEISCSI_GET_ULP_FROM_CRI
(phwi_ctrlr, cri))
pasync_ctx->cid_to_async_cri_map[
phwi_ctrlr->wrb_context[cri].cid] =
async_arr_idx++;
}
}
}
beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
"BM_%d : hwi_init_port success\n");
return 0;
error:
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
"BM_%d : hwi_init_port failed");
hwi_cleanup_port(phba);
return status;
}
static int hwi_init_controller(struct beiscsi_hba *phba)
{
struct hwi_controller *phwi_ctrlr;
phwi_ctrlr = phba->phwi_ctrlr;
if (1 == phba->init_mem[HWI_MEM_ADDN_CONTEXT].num_elements) {
phwi_ctrlr->phwi_ctxt = (struct hwi_context_memory *)phba->
init_mem[HWI_MEM_ADDN_CONTEXT].mem_array[0].virtual_address;
beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
"BM_%d : phwi_ctrlr->phwi_ctxt=%p\n",
phwi_ctrlr->phwi_ctxt);
} else {
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
"BM_%d : HWI_MEM_ADDN_CONTEXT is more "
"than one element.Failing to load\n");
return -ENOMEM;
}
iscsi_init_global_templates(phba);
if (beiscsi_init_wrb_handle(phba))
return -ENOMEM;
if (hwi_init_async_pdu_ctx(phba)) {
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
"BM_%d : hwi_init_async_pdu_ctx failed\n");
return -ENOMEM;
}
if (hwi_init_port(phba) != 0) {
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
"BM_%d : hwi_init_controller failed\n");
return -ENOMEM;
}
return 0;
}
static void beiscsi_free_mem(struct beiscsi_hba *phba)
{
struct be_mem_descriptor *mem_descr;
int i, j;
mem_descr = phba->init_mem;
for (i = 0; i < SE_MEM_MAX; i++) {
for (j = mem_descr->num_elements; j > 0; j--) {
dma_free_coherent(&phba->pcidev->dev,
mem_descr->mem_array[j - 1].size,
mem_descr->mem_array[j - 1].virtual_address,
(unsigned long)mem_descr->mem_array[j - 1].
bus_address.u.a64.address);
}
kfree(mem_descr->mem_array);
mem_descr++;
}
kfree(phba->init_mem);
kfree(phba->phwi_ctrlr->wrb_context);
kfree(phba->phwi_ctrlr);
}
static int beiscsi_init_sgl_handle(struct beiscsi_hba *phba)
{
struct be_mem_descriptor *mem_descr_sglh, *mem_descr_sg;
struct sgl_handle *psgl_handle;
struct iscsi_sge *pfrag;
unsigned int arr_index, i, idx;
unsigned int ulp_icd_start, ulp_num = 0;
phba->io_sgl_hndl_avbl = 0;
phba->eh_sgl_hndl_avbl = 0;
mem_descr_sglh = phba->init_mem;
mem_descr_sglh += HWI_MEM_SGLH;
if (1 == mem_descr_sglh->num_elements) {
phba->io_sgl_hndl_base = kcalloc(phba->params.ios_per_ctrl,
sizeof(struct sgl_handle *),
GFP_KERNEL);
if (!phba->io_sgl_hndl_base) {
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
"BM_%d : Mem Alloc Failed. Failing to load\n");
return -ENOMEM;
}
phba->eh_sgl_hndl_base =
kcalloc(phba->params.icds_per_ctrl -
phba->params.ios_per_ctrl,
sizeof(struct sgl_handle *), GFP_KERNEL);
if (!phba->eh_sgl_hndl_base) {
kfree(phba->io_sgl_hndl_base);
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
"BM_%d : Mem Alloc Failed. Failing to load\n");
return -ENOMEM;
}
} else {
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
"BM_%d : HWI_MEM_SGLH is more than one element."
"Failing to load\n");
return -ENOMEM;
}
arr_index = 0;
idx = 0;
while (idx < mem_descr_sglh->num_elements) {
psgl_handle = mem_descr_sglh->mem_array[idx].virtual_address;
for (i = 0; i < (mem_descr_sglh->mem_array[idx].size /
sizeof(struct sgl_handle)); i++) {
if (arr_index < phba->params.ios_per_ctrl) {
phba->io_sgl_hndl_base[arr_index] = psgl_handle;
phba->io_sgl_hndl_avbl++;
arr_index++;
} else {
phba->eh_sgl_hndl_base[arr_index -
phba->params.ios_per_ctrl] =
psgl_handle;
arr_index++;
phba->eh_sgl_hndl_avbl++;
}
psgl_handle++;
}
idx++;
}
beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
"BM_%d : phba->io_sgl_hndl_avbl=%d "
"phba->eh_sgl_hndl_avbl=%d\n",
phba->io_sgl_hndl_avbl,
phba->eh_sgl_hndl_avbl);
mem_descr_sg = phba->init_mem;
mem_descr_sg += HWI_MEM_SGE;
beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
"\n BM_%d : mem_descr_sg->num_elements=%d\n",
mem_descr_sg->num_elements);
for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++)
if (test_bit(ulp_num, &phba->fw_config.ulp_supported))
break;
ulp_icd_start = phba->fw_config.iscsi_icd_start[ulp_num];
arr_index = 0;
idx = 0;
while (idx < mem_descr_sg->num_elements) {
pfrag = mem_descr_sg->mem_array[idx].virtual_address;
for (i = 0;
i < (mem_descr_sg->mem_array[idx].size) /
(sizeof(struct iscsi_sge) * phba->params.num_sge_per_io);
i++) {
if (arr_index < phba->params.ios_per_ctrl)
psgl_handle = phba->io_sgl_hndl_base[arr_index];
else
psgl_handle = phba->eh_sgl_hndl_base[arr_index -
phba->params.ios_per_ctrl];
psgl_handle->pfrag = pfrag;
AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, pfrag, 0);
AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, pfrag, 0);
pfrag += phba->params.num_sge_per_io;
psgl_handle->sgl_index = ulp_icd_start + arr_index++;
}
idx++;
}
phba->io_sgl_free_index = 0;
phba->io_sgl_alloc_index = 0;
phba->eh_sgl_free_index = 0;
phba->eh_sgl_alloc_index = 0;
return 0;
}
static int hba_setup_cid_tbls(struct beiscsi_hba *phba)
{
int ret;
uint16_t i, ulp_num;
struct ulp_cid_info *ptr_cid_info = NULL;
for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {
if (test_bit(ulp_num, (void *)&phba->fw_config.ulp_supported)) {
ptr_cid_info = kzalloc(sizeof(struct ulp_cid_info),
GFP_KERNEL);
if (!ptr_cid_info) {
ret = -ENOMEM;
goto free_memory;
}
/* Allocate memory for CID array */
ptr_cid_info->cid_array =
kcalloc(BEISCSI_GET_CID_COUNT(phba, ulp_num),
sizeof(*ptr_cid_info->cid_array),
GFP_KERNEL);
if (!ptr_cid_info->cid_array) {
kfree(ptr_cid_info);
ptr_cid_info = NULL;
ret = -ENOMEM;
goto free_memory;
}
ptr_cid_info->avlbl_cids = BEISCSI_GET_CID_COUNT(
phba, ulp_num);
/* Save the cid_info_array ptr */
phba->cid_array_info[ulp_num] = ptr_cid_info;
}
}
phba->ep_array = kcalloc(phba->params.cxns_per_ctrl,
sizeof(struct iscsi_endpoint *),
GFP_KERNEL);
if (!phba->ep_array) {
ret = -ENOMEM;
goto free_memory;
}
phba->conn_table = kcalloc(phba->params.cxns_per_ctrl,
sizeof(struct beiscsi_conn *),
GFP_KERNEL);
if (!phba->conn_table) {
kfree(phba->ep_array);
phba->ep_array = NULL;
ret = -ENOMEM;
goto free_memory;
}
for (i = 0; i < phba->params.cxns_per_ctrl; i++) {
ulp_num = phba->phwi_ctrlr->wrb_context[i].ulp_num;
ptr_cid_info = phba->cid_array_info[ulp_num];
ptr_cid_info->cid_array[ptr_cid_info->cid_alloc++] =
phba->phwi_ctrlr->wrb_context[i].cid;
}
for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {
if (test_bit(ulp_num, (void *)&phba->fw_config.ulp_supported)) {
ptr_cid_info = phba->cid_array_info[ulp_num];
ptr_cid_info->cid_alloc = 0;
ptr_cid_info->cid_free = 0;
}
}
return 0;
free_memory:
for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {
if (test_bit(ulp_num, (void *)&phba->fw_config.ulp_supported)) {
ptr_cid_info = phba->cid_array_info[ulp_num];
if (ptr_cid_info) {
kfree(ptr_cid_info->cid_array);
kfree(ptr_cid_info);
phba->cid_array_info[ulp_num] = NULL;
}
}
}
return ret;
}
static void hwi_enable_intr(struct beiscsi_hba *phba)
{
struct be_ctrl_info *ctrl = &phba->ctrl;
struct hwi_controller *phwi_ctrlr;
struct hwi_context_memory *phwi_context;
struct be_queue_info *eq;
u8 __iomem *addr;
u32 reg, i;
u32 enabled;
phwi_ctrlr = phba->phwi_ctrlr;
phwi_context = phwi_ctrlr->phwi_ctxt;
addr = (u8 __iomem *) ((u8 __iomem *) ctrl->pcicfg +
PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET);
reg = ioread32(addr);
enabled = reg & MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
if (!enabled) {
reg |= MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
"BM_%d : reg =x%08x addr=%p\n", reg, addr);
iowrite32(reg, addr);
}
if (!phba->pcidev->msix_enabled) {
eq = &phwi_context->be_eq[0].q;
beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
"BM_%d : eq->id=%d\n", eq->id);
hwi_ring_eq_db(phba, eq->id, 0, 0, 1, 1);
} else {
for (i = 0; i <= phba->num_cpus; i++) {
eq = &phwi_context->be_eq[i].q;
beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
"BM_%d : eq->id=%d\n", eq->id);
hwi_ring_eq_db(phba, eq->id, 0, 0, 1, 1);
}
}
}
static void hwi_disable_intr(struct beiscsi_hba *phba)
{
struct be_ctrl_info *ctrl = &phba->ctrl;
u8 __iomem *addr = ctrl->pcicfg + PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET;
u32 reg = ioread32(addr);
u32 enabled = reg & MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
if (enabled) {
reg &= ~MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
iowrite32(reg, addr);
} else
beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_INIT,
"BM_%d : In hwi_disable_intr, Already Disabled\n");
}
static int beiscsi_init_port(struct beiscsi_hba *phba)
{
int ret;
ret = hwi_init_controller(phba);
if (ret < 0) {
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
"BM_%d : init controller failed\n");
return ret;
}
ret = beiscsi_init_sgl_handle(phba);
if (ret < 0) {
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
"BM_%d : init sgl handles failed\n");
goto cleanup_port;
}
ret = hba_setup_cid_tbls(phba);
if (ret < 0) {
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
"BM_%d : setup CID table failed\n");
kfree(phba->io_sgl_hndl_base);
kfree(phba->eh_sgl_hndl_base);
goto cleanup_port;
}
return ret;
cleanup_port:
hwi_cleanup_port(phba);
return ret;
}
static void beiscsi_cleanup_port(struct beiscsi_hba *phba)
{
struct ulp_cid_info *ptr_cid_info = NULL;
int ulp_num;
kfree(phba->io_sgl_hndl_base);
kfree(phba->eh_sgl_hndl_base);
kfree(phba->ep_array);
kfree(phba->conn_table);
for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {
if (test_bit(ulp_num, (void *)&phba->fw_config.ulp_supported)) {
ptr_cid_info = phba->cid_array_info[ulp_num];
if (ptr_cid_info) {
kfree(ptr_cid_info->cid_array);
kfree(ptr_cid_info);
phba->cid_array_info[ulp_num] = NULL;
}
}
}
}
/**
* beiscsi_free_mgmt_task_handles()- Free driver CXN resources
* @beiscsi_conn: ptr to the conn to be cleaned up
* @task: ptr to iscsi_task resource to be freed.
*
* Free driver mgmt resources binded to CXN.
**/
void
beiscsi_free_mgmt_task_handles(struct beiscsi_conn *beiscsi_conn,
struct iscsi_task *task)
{
struct beiscsi_io_task *io_task;
struct beiscsi_hba *phba = beiscsi_conn->phba;
struct hwi_wrb_context *pwrb_context;
struct hwi_controller *phwi_ctrlr;
uint16_t cri_index = BE_GET_CRI_FROM_CID(
beiscsi_conn->beiscsi_conn_cid);
phwi_ctrlr = phba->phwi_ctrlr;
pwrb_context = &phwi_ctrlr->wrb_context[cri_index];
io_task = task->dd_data;
if (io_task->pwrb_handle) {
free_wrb_handle(phba, pwrb_context, io_task->pwrb_handle);
io_task->pwrb_handle = NULL;
}
if (io_task->psgl_handle) {
free_mgmt_sgl_handle(phba, io_task->psgl_handle);
io_task->psgl_handle = NULL;
}
if (io_task->mtask_addr) {
dma_unmap_single(&phba->pcidev->dev,
io_task->mtask_addr,
io_task->mtask_data_count,
DMA_TO_DEVICE);
io_task->mtask_addr = 0;
}
}
/**
* beiscsi_cleanup_task()- Free driver resources of the task
* @task: ptr to the iscsi task
*
**/
static void beiscsi_cleanup_task(struct iscsi_task *task)
{
struct beiscsi_io_task *io_task = task->dd_data;
struct iscsi_conn *conn = task->conn;
struct beiscsi_conn *beiscsi_conn = conn->dd_data;
struct beiscsi_hba *phba = beiscsi_conn->phba;
struct beiscsi_session *beiscsi_sess = beiscsi_conn->beiscsi_sess;
struct hwi_wrb_context *pwrb_context;
struct hwi_controller *phwi_ctrlr;
uint16_t cri_index = BE_GET_CRI_FROM_CID(
beiscsi_conn->beiscsi_conn_cid);
phwi_ctrlr = phba->phwi_ctrlr;
pwrb_context = &phwi_ctrlr->wrb_context[cri_index];
if (io_task->cmd_bhs) {
dma_pool_free(beiscsi_sess->bhs_pool, io_task->cmd_bhs,
io_task->bhs_pa.u.a64.address);
io_task->cmd_bhs = NULL;
task->hdr = NULL;
}
if (task->sc) {
if (io_task->pwrb_handle) {
free_wrb_handle(phba, pwrb_context,
io_task->pwrb_handle);
io_task->pwrb_handle = NULL;
}
if (io_task->psgl_handle) {
free_io_sgl_handle(phba, io_task->psgl_handle);
io_task->psgl_handle = NULL;
}
if (io_task->scsi_cmnd) {
if (io_task->num_sg)
scsi_dma_unmap(io_task->scsi_cmnd);
io_task->scsi_cmnd = NULL;
}
} else {
if (!beiscsi_conn->login_in_progress)
beiscsi_free_mgmt_task_handles(beiscsi_conn, task);
}
}
void
beiscsi_offload_connection(struct beiscsi_conn *beiscsi_conn,
struct beiscsi_offload_params *params)
{
struct wrb_handle *pwrb_handle;
struct hwi_wrb_context *pwrb_context = NULL;
struct beiscsi_hba *phba = beiscsi_conn->phba;
struct iscsi_task *task = beiscsi_conn->task;
struct iscsi_session *session = task->conn->session;
u32 doorbell = 0;
/*
* We can always use 0 here because it is reserved by libiscsi for
* login/startup related tasks.
*/
beiscsi_conn->login_in_progress = 0;
spin_lock_bh(&session->back_lock);
beiscsi_cleanup_task(task);
spin_unlock_bh(&session->back_lock);
pwrb_handle = alloc_wrb_handle(phba, beiscsi_conn->beiscsi_conn_cid,
&pwrb_context);
/* Check for the adapter family */
if (is_chip_be2_be3r(phba))
beiscsi_offload_cxn_v0(params, pwrb_handle,
phba->init_mem,
pwrb_context);
else
beiscsi_offload_cxn_v2(params, pwrb_handle,
pwrb_context);
be_dws_le_to_cpu(pwrb_handle->pwrb,
sizeof(struct iscsi_target_context_update_wrb));
doorbell |= beiscsi_conn->beiscsi_conn_cid & DB_WRB_POST_CID_MASK;
doorbell |= (pwrb_handle->wrb_index & DB_DEF_PDU_WRB_INDEX_MASK)
<< DB_DEF_PDU_WRB_INDEX_SHIFT;
doorbell |= 1 << DB_DEF_PDU_NUM_POSTED_SHIFT;
iowrite32(doorbell, phba->db_va +
beiscsi_conn->doorbell_offset);
/*
* There is no completion for CONTEXT_UPDATE. The completion of next
* WRB posted guarantees FW's processing and DMA'ing of it.
* Use beiscsi_put_wrb_handle to put it back in the pool which makes
* sure zero'ing or reuse of the WRB only after wrbs_per_cxn.
*/
beiscsi_put_wrb_handle(pwrb_context, pwrb_handle,
phba->params.wrbs_per_cxn);
beiscsi_log(phba, KERN_INFO,
BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,
"BM_%d : put CONTEXT_UPDATE pwrb_handle=%p free_index=0x%x wrb_handles_available=%d\n",
pwrb_handle, pwrb_context->free_index,
pwrb_context->wrb_handles_available);
}
static void beiscsi_parse_pdu(struct iscsi_conn *conn, itt_t itt,
int *index, int *age)
{
*index = (int)itt;
if (age)
*age = conn->session->age;
}
/**
* beiscsi_alloc_pdu - allocates pdu and related resources
* @task: libiscsi task
* @opcode: opcode of pdu for task
*
* This is called with the session lock held. It will allocate
* the wrb and sgl if needed for the command. And it will prep
* the pdu's itt. beiscsi_parse_pdu will later translate
* the pdu itt to the libiscsi task itt.
*/
static int beiscsi_alloc_pdu(struct iscsi_task *task, uint8_t opcode)
{
struct beiscsi_io_task *io_task = task->dd_data;
struct iscsi_conn *conn = task->conn;
struct beiscsi_conn *beiscsi_conn = conn->dd_data;
struct beiscsi_hba *phba = beiscsi_conn->phba;
struct hwi_wrb_context *pwrb_context;
struct hwi_controller *phwi_ctrlr;
itt_t itt;
uint16_t cri_index = 0;
struct beiscsi_session *beiscsi_sess = beiscsi_conn->beiscsi_sess;
dma_addr_t paddr;
io_task->cmd_bhs = dma_pool_alloc(beiscsi_sess->bhs_pool,
GFP_ATOMIC, &paddr);
if (!io_task->cmd_bhs)
return -ENOMEM;
io_task->bhs_pa.u.a64.address = paddr;
io_task->libiscsi_itt = (itt_t)task->itt;
io_task->conn = beiscsi_conn;
task->hdr = (struct iscsi_hdr *)&io_task->cmd_bhs->iscsi_hdr;
task->hdr_max = sizeof(struct be_cmd_bhs);
io_task->psgl_handle = NULL;
io_task->pwrb_handle = NULL;
if (task->sc) {
io_task->psgl_handle = alloc_io_sgl_handle(phba);
if (!io_task->psgl_handle) {
beiscsi_log(phba, KERN_ERR,
BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,
"BM_%d : Alloc of IO_SGL_ICD Failed "
"for the CID : %d\n",
beiscsi_conn->beiscsi_conn_cid);
goto free_hndls;
}
io_task->pwrb_handle = alloc_wrb_handle(phba,
beiscsi_conn->beiscsi_conn_cid,
&io_task->pwrb_context);
if (!io_task->pwrb_handle) {
beiscsi_log(phba, KERN_ERR,
BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,
"BM_%d : Alloc of WRB_HANDLE Failed "
"for the CID : %d\n",
beiscsi_conn->beiscsi_conn_cid);
goto free_io_hndls;
}
} else {
io_task->scsi_cmnd = NULL;
if ((opcode & ISCSI_OPCODE_MASK) == ISCSI_OP_LOGIN) {
beiscsi_conn->task = task;
if (!beiscsi_conn->login_in_progress) {
io_task->psgl_handle = (struct sgl_handle *)
alloc_mgmt_sgl_handle(phba);
if (!io_task->psgl_handle) {
beiscsi_log(phba, KERN_ERR,
BEISCSI_LOG_IO |
BEISCSI_LOG_CONFIG,
"BM_%d : Alloc of MGMT_SGL_ICD Failed "
"for the CID : %d\n",
beiscsi_conn->beiscsi_conn_cid);
goto free_hndls;
}
beiscsi_conn->login_in_progress = 1;
beiscsi_conn->plogin_sgl_handle =
io_task->psgl_handle;
io_task->pwrb_handle =
alloc_wrb_handle(phba,
beiscsi_conn->beiscsi_conn_cid,
&io_task->pwrb_context);
if (!io_task->pwrb_handle) {
beiscsi_log(phba, KERN_ERR,
BEISCSI_LOG_IO |
BEISCSI_LOG_CONFIG,
"BM_%d : Alloc of WRB_HANDLE Failed "
"for the CID : %d\n",
beiscsi_conn->beiscsi_conn_cid);
goto free_mgmt_hndls;
}
beiscsi_conn->plogin_wrb_handle =
io_task->pwrb_handle;
} else {
io_task->psgl_handle =
beiscsi_conn->plogin_sgl_handle;
io_task->pwrb_handle =
beiscsi_conn->plogin_wrb_handle;
}
} else {
io_task->psgl_handle = alloc_mgmt_sgl_handle(phba);
if (!io_task->psgl_handle) {
beiscsi_log(phba, KERN_ERR,
BEISCSI_LOG_IO |
BEISCSI_LOG_CONFIG,
"BM_%d : Alloc of MGMT_SGL_ICD Failed "
"for the CID : %d\n",
beiscsi_conn->beiscsi_conn_cid);
goto free_hndls;
}
io_task->pwrb_handle =
alloc_wrb_handle(phba,
beiscsi_conn->beiscsi_conn_cid,
&io_task->pwrb_context);
if (!io_task->pwrb_handle) {
beiscsi_log(phba, KERN_ERR,
BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,
"BM_%d : Alloc of WRB_HANDLE Failed "
"for the CID : %d\n",
beiscsi_conn->beiscsi_conn_cid);
goto free_mgmt_hndls;
}
}
}
itt = (itt_t) cpu_to_be32(((unsigned int)io_task->pwrb_handle->
wrb_index << 16) | (unsigned int)
(io_task->psgl_handle->sgl_index));
io_task->pwrb_handle->pio_handle = task;
io_task->cmd_bhs->iscsi_hdr.itt = itt;
return 0;
free_io_hndls:
free_io_sgl_handle(phba, io_task->psgl_handle);
goto free_hndls;
free_mgmt_hndls:
free_mgmt_sgl_handle(phba, io_task->psgl_handle);
io_task->psgl_handle = NULL;
free_hndls:
phwi_ctrlr = phba->phwi_ctrlr;
cri_index = BE_GET_CRI_FROM_CID(
beiscsi_conn->beiscsi_conn_cid);
pwrb_context = &phwi_ctrlr->wrb_context[cri_index];
if (io_task->pwrb_handle)
free_wrb_handle(phba, pwrb_context, io_task->pwrb_handle);
io_task->pwrb_handle = NULL;
dma_pool_free(beiscsi_sess->bhs_pool, io_task->cmd_bhs,
io_task->bhs_pa.u.a64.address);
io_task->cmd_bhs = NULL;
return -ENOMEM;
}
static int beiscsi_iotask_v2(struct iscsi_task *task, struct scatterlist *sg,
unsigned int num_sg, unsigned int xferlen,
unsigned int writedir)
{
struct beiscsi_io_task *io_task = task->dd_data;
struct iscsi_conn *conn = task->conn;
struct beiscsi_conn *beiscsi_conn = conn->dd_data;
struct beiscsi_hba *phba = beiscsi_conn->phba;
struct iscsi_wrb *pwrb = NULL;
unsigned int doorbell = 0;
pwrb = io_task->pwrb_handle->pwrb;
io_task->bhs_len = sizeof(struct be_cmd_bhs);
if (writedir) {
AMAP_SET_BITS(struct amap_iscsi_wrb_v2, type, pwrb,
INI_WR_CMD);
AMAP_SET_BITS(struct amap_iscsi_wrb_v2, dsp, pwrb, 1);
} else {
AMAP_SET_BITS(struct amap_iscsi_wrb_v2, type, pwrb,
INI_RD_CMD);
AMAP_SET_BITS(struct amap_iscsi_wrb_v2, dsp, pwrb, 0);
}
io_task->wrb_type = AMAP_GET_BITS(struct amap_iscsi_wrb_v2,
type, pwrb);
AMAP_SET_BITS(struct amap_iscsi_wrb_v2, lun, pwrb,
cpu_to_be16(*(unsigned short *)
&io_task->cmd_bhs->iscsi_hdr.lun));
AMAP_SET_BITS(struct amap_iscsi_wrb_v2, r2t_exp_dtl, pwrb, xferlen);
AMAP_SET_BITS(struct amap_iscsi_wrb_v2, wrb_idx, pwrb,
io_task->pwrb_handle->wrb_index);
AMAP_SET_BITS(struct amap_iscsi_wrb_v2, cmdsn_itt, pwrb,
be32_to_cpu(task->cmdsn));
AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sgl_idx, pwrb,
io_task->psgl_handle->sgl_index);
hwi_write_sgl_v2(pwrb, sg, num_sg, io_task);
AMAP_SET_BITS(struct amap_iscsi_wrb_v2, ptr2nextwrb, pwrb,
io_task->pwrb_handle->wrb_index);
if (io_task->pwrb_context->plast_wrb)
AMAP_SET_BITS(struct amap_iscsi_wrb_v2, ptr2nextwrb,
io_task->pwrb_context->plast_wrb,
io_task->pwrb_handle->wrb_index);
io_task->pwrb_context->plast_wrb = pwrb;
be_dws_le_to_cpu(pwrb, sizeof(struct iscsi_wrb));
doorbell |= beiscsi_conn->beiscsi_conn_cid & DB_WRB_POST_CID_MASK;
doorbell |= (io_task->pwrb_handle->wrb_index &
DB_DEF_PDU_WRB_INDEX_MASK) <<
DB_DEF_PDU_WRB_INDEX_SHIFT;
doorbell |= 1 << DB_DEF_PDU_NUM_POSTED_SHIFT;
iowrite32(doorbell, phba->db_va +
beiscsi_conn->doorbell_offset);
return 0;
}
static int beiscsi_iotask(struct iscsi_task *task, struct scatterlist *sg,
unsigned int num_sg, unsigned int xferlen,
unsigned int writedir)
{
struct beiscsi_io_task *io_task = task->dd_data;
struct iscsi_conn *conn = task->conn;
struct beiscsi_conn *beiscsi_conn = conn->dd_data;
struct beiscsi_hba *phba = beiscsi_conn->phba;
struct iscsi_wrb *pwrb = NULL;
unsigned int doorbell = 0;
pwrb = io_task->pwrb_handle->pwrb;
io_task->bhs_len = sizeof(struct be_cmd_bhs);
if (writedir) {
AMAP_SET_BITS(struct amap_iscsi_wrb, type, pwrb,
INI_WR_CMD);
AMAP_SET_BITS(struct amap_iscsi_wrb, dsp, pwrb, 1);
} else {
AMAP_SET_BITS(struct amap_iscsi_wrb, type, pwrb,
INI_RD_CMD);
AMAP_SET_BITS(struct amap_iscsi_wrb, dsp, pwrb, 0);
}
io_task->wrb_type = AMAP_GET_BITS(struct amap_iscsi_wrb,
type, pwrb);
AMAP_SET_BITS(struct amap_iscsi_wrb, lun, pwrb,
cpu_to_be16(*(unsigned short *)
&io_task->cmd_bhs->iscsi_hdr.lun));
AMAP_SET_BITS(struct amap_iscsi_wrb, r2t_exp_dtl, pwrb, xferlen);
AMAP_SET_BITS(struct amap_iscsi_wrb, wrb_idx, pwrb,
io_task->pwrb_handle->wrb_index);
AMAP_SET_BITS(struct amap_iscsi_wrb, cmdsn_itt, pwrb,
be32_to_cpu(task->cmdsn));
AMAP_SET_BITS(struct amap_iscsi_wrb, sgl_icd_idx, pwrb,
io_task->psgl_handle->sgl_index);
hwi_write_sgl(pwrb, sg, num_sg, io_task);
AMAP_SET_BITS(struct amap_iscsi_wrb, ptr2nextwrb, pwrb,
io_task->pwrb_handle->wrb_index);
if (io_task->pwrb_context->plast_wrb)
AMAP_SET_BITS(struct amap_iscsi_wrb, ptr2nextwrb,
io_task->pwrb_context->plast_wrb,
io_task->pwrb_handle->wrb_index);
io_task->pwrb_context->plast_wrb = pwrb;
be_dws_le_to_cpu(pwrb, sizeof(struct iscsi_wrb));
doorbell |= beiscsi_conn->beiscsi_conn_cid & DB_WRB_POST_CID_MASK;
doorbell |= (io_task->pwrb_handle->wrb_index &
DB_DEF_PDU_WRB_INDEX_MASK) << DB_DEF_PDU_WRB_INDEX_SHIFT;
doorbell |= 1 << DB_DEF_PDU_NUM_POSTED_SHIFT;
iowrite32(doorbell, phba->db_va +
beiscsi_conn->doorbell_offset);
return 0;
}
static int beiscsi_mtask(struct iscsi_task *task)
{
struct beiscsi_io_task *io_task = task->dd_data;
struct iscsi_conn *conn = task->conn;
struct beiscsi_conn *beiscsi_conn = conn->dd_data;
struct beiscsi_hba *phba = beiscsi_conn->phba;
struct iscsi_wrb *pwrb = NULL;
unsigned int doorbell = 0;
unsigned int cid;
unsigned int pwrb_typeoffset = 0;
int ret = 0;
cid = beiscsi_conn->beiscsi_conn_cid;
pwrb = io_task->pwrb_handle->pwrb;
if (is_chip_be2_be3r(phba)) {
AMAP_SET_BITS(struct amap_iscsi_wrb, cmdsn_itt, pwrb,
be32_to_cpu(task->cmdsn));
AMAP_SET_BITS(struct amap_iscsi_wrb, wrb_idx, pwrb,
io_task->pwrb_handle->wrb_index);
AMAP_SET_BITS(struct amap_iscsi_wrb, sgl_icd_idx, pwrb,
io_task->psgl_handle->sgl_index);
AMAP_SET_BITS(struct amap_iscsi_wrb, r2t_exp_dtl, pwrb,
task->data_count);
AMAP_SET_BITS(struct amap_iscsi_wrb, ptr2nextwrb, pwrb,
io_task->pwrb_handle->wrb_index);
if (io_task->pwrb_context->plast_wrb)
AMAP_SET_BITS(struct amap_iscsi_wrb, ptr2nextwrb,
io_task->pwrb_context->plast_wrb,
io_task->pwrb_handle->wrb_index);
io_task->pwrb_context->plast_wrb = pwrb;
pwrb_typeoffset = BE_WRB_TYPE_OFFSET;
} else {
AMAP_SET_BITS(struct amap_iscsi_wrb_v2, cmdsn_itt, pwrb,
be32_to_cpu(task->cmdsn));
AMAP_SET_BITS(struct amap_iscsi_wrb_v2, wrb_idx, pwrb,
io_task->pwrb_handle->wrb_index);
AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sgl_idx, pwrb,
io_task->psgl_handle->sgl_index);
AMAP_SET_BITS(struct amap_iscsi_wrb_v2, r2t_exp_dtl, pwrb,
task->data_count);
AMAP_SET_BITS(struct amap_iscsi_wrb_v2, ptr2nextwrb, pwrb,
io_task->pwrb_handle->wrb_index);
if (io_task->pwrb_context->plast_wrb)
AMAP_SET_BITS(struct amap_iscsi_wrb_v2, ptr2nextwrb,
io_task->pwrb_context->plast_wrb,
io_task->pwrb_handle->wrb_index);
io_task->pwrb_context->plast_wrb = pwrb;
pwrb_typeoffset = SKH_WRB_TYPE_OFFSET;
}
switch (task->hdr->opcode & ISCSI_OPCODE_MASK) {
case ISCSI_OP_LOGIN:
AMAP_SET_BITS(struct amap_iscsi_wrb, cmdsn_itt, pwrb, 1);
ADAPTER_SET_WRB_TYPE(pwrb, TGT_DM_CMD, pwrb_typeoffset);
ret = hwi_write_buffer(pwrb, task);
break;
case ISCSI_OP_NOOP_OUT:
if (task->hdr->ttt != ISCSI_RESERVED_TAG) {
ADAPTER_SET_WRB_TYPE(pwrb, TGT_DM_CMD, pwrb_typeoffset);
if (is_chip_be2_be3r(phba))
AMAP_SET_BITS(struct amap_iscsi_wrb,
dmsg, pwrb, 1);
else
AMAP_SET_BITS(struct amap_iscsi_wrb_v2,
dmsg, pwrb, 1);
} else {
ADAPTER_SET_WRB_TYPE(pwrb, INI_RD_CMD, pwrb_typeoffset);
if (is_chip_be2_be3r(phba))
AMAP_SET_BITS(struct amap_iscsi_wrb,
dmsg, pwrb, 0);
else
AMAP_SET_BITS(struct amap_iscsi_wrb_v2,
dmsg, pwrb, 0);
}
ret = hwi_write_buffer(pwrb, task);
break;
case ISCSI_OP_TEXT:
ADAPTER_SET_WRB_TYPE(pwrb, TGT_DM_CMD, pwrb_typeoffset);
ret = hwi_write_buffer(pwrb, task);
break;
case ISCSI_OP_SCSI_TMFUNC:
ADAPTER_SET_WRB_TYPE(pwrb, INI_TMF_CMD, pwrb_typeoffset);
ret = hwi_write_buffer(pwrb, task);
break;
case ISCSI_OP_LOGOUT:
ADAPTER_SET_WRB_TYPE(pwrb, HWH_TYPE_LOGOUT, pwrb_typeoffset);
ret = hwi_write_buffer(pwrb, task);
break;
default:
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
"BM_%d : opcode =%d Not supported\n",
task->hdr->opcode & ISCSI_OPCODE_MASK);
return -EINVAL;
}
if (ret)
return ret;
/* Set the task type */
io_task->wrb_type = (is_chip_be2_be3r(phba)) ?
AMAP_GET_BITS(struct amap_iscsi_wrb, type, pwrb) :
AMAP_GET_BITS(struct amap_iscsi_wrb_v2, type, pwrb);
doorbell |= cid & DB_WRB_POST_CID_MASK;
doorbell |= (io_task->pwrb_handle->wrb_index &
DB_DEF_PDU_WRB_INDEX_MASK) << DB_DEF_PDU_WRB_INDEX_SHIFT;
doorbell |= 1 << DB_DEF_PDU_NUM_POSTED_SHIFT;
iowrite32(doorbell, phba->db_va +
beiscsi_conn->doorbell_offset);
return 0;
}
static int beiscsi_task_xmit(struct iscsi_task *task)
{
struct beiscsi_io_task *io_task = task->dd_data;
struct scsi_cmnd *sc = task->sc;
struct beiscsi_hba *phba;
struct scatterlist *sg;
int num_sg;
unsigned int writedir = 0, xferlen = 0;
phba = io_task->conn->phba;
/**
* HBA in error includes BEISCSI_HBA_FW_TIMEOUT. IO path might be
* operational if FW still gets heartbeat from EP FW. Is management
* path really needed to continue further?
*/
if (!beiscsi_hba_is_online(phba))
return -EIO;
if (!io_task->conn->login_in_progress)
task->hdr->exp_statsn = 0;
if (!sc)
return beiscsi_mtask(task);
io_task->scsi_cmnd = sc;
io_task->num_sg = 0;
num_sg = scsi_dma_map(sc);
if (num_sg < 0) {
beiscsi_log(phba, KERN_ERR,
BEISCSI_LOG_IO | BEISCSI_LOG_ISCSI,
"BM_%d : scsi_dma_map Failed "
"Driver_ITT : 0x%x ITT : 0x%x Xferlen : 0x%x\n",
be32_to_cpu(io_task->cmd_bhs->iscsi_hdr.itt),
io_task->libiscsi_itt, scsi_bufflen(sc));
return num_sg;
}
/**
* For scsi cmd task, check num_sg before unmapping in cleanup_task.
* For management task, cleanup_task checks mtask_addr before unmapping.
*/
io_task->num_sg = num_sg;
xferlen = scsi_bufflen(sc);
sg = scsi_sglist(sc);
if (sc->sc_data_direction == DMA_TO_DEVICE)
writedir = 1;
else
writedir = 0;
return phba->iotask_fn(task, sg, num_sg, xferlen, writedir);
}
/**
* beiscsi_bsg_request - handle bsg request from ISCSI transport
* @job: job to handle
*/
static int beiscsi_bsg_request(struct bsg_job *job)
{
struct Scsi_Host *shost;
struct beiscsi_hba *phba;
struct iscsi_bsg_request *bsg_req = job->request;
int rc = -EINVAL;
unsigned int tag;
struct be_dma_mem nonemb_cmd;
struct be_cmd_resp_hdr *resp;
struct iscsi_bsg_reply *bsg_reply = job->reply;
unsigned short status, extd_status;
shost = iscsi_job_to_shost(job);
phba = iscsi_host_priv(shost);
if (!beiscsi_hba_is_online(phba)) {
beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
"BM_%d : HBA in error 0x%lx\n", phba->state);
return -ENXIO;
}
switch (bsg_req->msgcode) {
case ISCSI_BSG_HST_VENDOR:
nonemb_cmd.va = dma_alloc_coherent(&phba->ctrl.pdev->dev,
job->request_payload.payload_len,
&nonemb_cmd.dma, GFP_KERNEL);
if (nonemb_cmd.va == NULL) {
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
"BM_%d : Failed to allocate memory for "
"beiscsi_bsg_request\n");
return -ENOMEM;
}
tag = mgmt_vendor_specific_fw_cmd(&phba->ctrl, phba, job,
&nonemb_cmd);
if (!tag) {
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
"BM_%d : MBX Tag Allocation Failed\n");
dma_free_coherent(&phba->ctrl.pdev->dev, nonemb_cmd.size,
nonemb_cmd.va, nonemb_cmd.dma);
return -EAGAIN;
}
rc = wait_event_interruptible_timeout(
phba->ctrl.mcc_wait[tag],
phba->ctrl.mcc_tag_status[tag],
msecs_to_jiffies(
BEISCSI_HOST_MBX_TIMEOUT));
if (!test_bit(BEISCSI_HBA_ONLINE, &phba->state)) {
clear_bit(MCC_TAG_STATE_RUNNING,
&phba->ctrl.ptag_state[tag].tag_state);
dma_free_coherent(&phba->ctrl.pdev->dev, nonemb_cmd.size,
nonemb_cmd.va, nonemb_cmd.dma);
return -EIO;
}
extd_status = (phba->ctrl.mcc_tag_status[tag] &
CQE_STATUS_ADDL_MASK) >> CQE_STATUS_ADDL_SHIFT;
status = phba->ctrl.mcc_tag_status[tag] & CQE_STATUS_MASK;
free_mcc_wrb(&phba->ctrl, tag);
resp = (struct be_cmd_resp_hdr *)nonemb_cmd.va;
sg_copy_from_buffer(job->reply_payload.sg_list,
job->reply_payload.sg_cnt,
nonemb_cmd.va, (resp->response_length
+ sizeof(*resp)));
bsg_reply->reply_payload_rcv_len = resp->response_length;
bsg_reply->result = status;
bsg_job_done(job, bsg_reply->result,
bsg_reply->reply_payload_rcv_len);
dma_free_coherent(&phba->ctrl.pdev->dev, nonemb_cmd.size,
nonemb_cmd.va, nonemb_cmd.dma);
if (status || extd_status) {
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
"BM_%d : MBX Cmd Failed"
" status = %d extd_status = %d\n",
status, extd_status);
return -EIO;
} else {
rc = 0;
}
break;
default:
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
"BM_%d : Unsupported bsg command: 0x%x\n",
bsg_req->msgcode);
break;
}
return rc;
}
static void beiscsi_hba_attrs_init(struct beiscsi_hba *phba)
{
/* Set the logging parameter */
beiscsi_log_enable_init(phba, beiscsi_log_enable);
}
void beiscsi_start_boot_work(struct beiscsi_hba *phba, unsigned int s_handle)
{
if (phba->boot_struct.boot_kset)
return;
/* skip if boot work is already in progress */
if (test_and_set_bit(BEISCSI_HBA_BOOT_WORK, &phba->state))
return;
phba->boot_struct.retry = 3;
phba->boot_struct.tag = 0;
phba->boot_struct.s_handle = s_handle;
phba->boot_struct.action = BEISCSI_BOOT_GET_SHANDLE;
schedule_work(&phba->boot_work);
}
#define BEISCSI_SYSFS_ISCSI_BOOT_FLAGS 3
/*
* beiscsi_show_boot_tgt_info()
* Boot flag info for iscsi-utilities
* Bit 0 Block valid flag
* Bit 1 Firmware booting selected
*/
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_struct.boot_sess;
struct mgmt_conn_info *boot_conn = &boot_sess->conn_list[0];
char *str = buf;
int rc = -EPERM;
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 == BEISCSI_IP_TYPE_V4)
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, "%d\n", BEISCSI_SYSFS_ISCSI_BOOT_FLAGS);
break;
case ISCSI_BOOT_TGT_NIC_ASSOC:
rc = sprintf(str, "0\n");
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 = -EPERM;
switch (type) {
case ISCSI_BOOT_INI_INITIATOR_NAME:
rc = sprintf(str, "%s\n",
phba->boot_struct.boot_sess.initiator_iscsiname);
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 = -EPERM;
switch (type) {
case ISCSI_BOOT_ETH_FLAGS:
rc = sprintf(str, "%d\n", BEISCSI_SYSFS_ISCSI_BOOT_FLAGS);
break;
case ISCSI_BOOT_ETH_INDEX:
rc = sprintf(str, "0\n");
break;
case ISCSI_BOOT_ETH_MAC:
rc = beiscsi_get_macaddr(str, phba);
break;
}
return rc;
}
static umode_t beiscsi_tgt_get_attr_visibility(void *data, int type)
{
umode_t rc = 0;
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;
}
return rc;
}
static umode_t beiscsi_ini_get_attr_visibility(void *data, int type)
{
umode_t rc = 0;
switch (type) {
case ISCSI_BOOT_INI_INITIATOR_NAME:
rc = S_IRUGO;
break;
}
return rc;
}
static umode_t beiscsi_eth_get_attr_visibility(void *data, int type)
{
umode_t rc = 0;
switch (type) {
case ISCSI_BOOT_ETH_FLAGS:
case ISCSI_BOOT_ETH_MAC:
case ISCSI_BOOT_ETH_INDEX:
rc = S_IRUGO;
break;
}
return rc;
}
static void beiscsi_boot_kobj_release(void *data)
{
struct beiscsi_hba *phba = data;
scsi_host_put(phba->shost);
}
static int beiscsi_boot_create_kset(struct beiscsi_hba *phba)
{
struct boot_struct *bs = &phba->boot_struct;
struct iscsi_boot_kobj *boot_kobj;
if (bs->boot_kset) {
__beiscsi_log(phba, KERN_ERR,
"BM_%d: boot_kset already created\n");
return 0;
}
bs->boot_kset = iscsi_boot_create_host_kset(phba->shost->host_no);
if (!bs->boot_kset) {
__beiscsi_log(phba, KERN_ERR,
"BM_%d: boot_kset alloc failed\n");
return -ENOMEM;
}
/* get shost ref because the show function will refer phba */
if (!scsi_host_get(phba->shost))
goto free_kset;
boot_kobj = iscsi_boot_create_target(bs->boot_kset, 0, phba,
beiscsi_show_boot_tgt_info,
beiscsi_tgt_get_attr_visibility,
beiscsi_boot_kobj_release);
if (!boot_kobj)
goto put_shost;
if (!scsi_host_get(phba->shost))
goto free_kset;
boot_kobj = iscsi_boot_create_initiator(bs->boot_kset, 0, phba,
beiscsi_show_boot_ini_info,
beiscsi_ini_get_attr_visibility,
beiscsi_boot_kobj_release);
if (!boot_kobj)
goto put_shost;
if (!scsi_host_get(phba->shost))
goto free_kset;
boot_kobj = iscsi_boot_create_ethernet(bs->boot_kset, 0, phba,
beiscsi_show_boot_eth_info,
beiscsi_eth_get_attr_visibility,
beiscsi_boot_kobj_release);
if (!boot_kobj)
goto put_shost;
return 0;
put_shost:
scsi_host_put(phba->shost);
free_kset:
iscsi_boot_destroy_kset(bs->boot_kset);
bs->boot_kset = NULL;
return -ENOMEM;
}
static void beiscsi_boot_work(struct work_struct *work)
{
struct beiscsi_hba *phba =
container_of(work, struct beiscsi_hba, boot_work);
struct boot_struct *bs = &phba->boot_struct;
unsigned int tag = 0;
if (!beiscsi_hba_is_online(phba))
return;
beiscsi_log(phba, KERN_INFO,
BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
"BM_%d : %s action %d\n",
__func__, phba->boot_struct.action);
switch (phba->boot_struct.action) {
case BEISCSI_BOOT_REOPEN_SESS:
tag = beiscsi_boot_reopen_sess(phba);
break;
case BEISCSI_BOOT_GET_SHANDLE:
tag = __beiscsi_boot_get_shandle(phba, 1);
break;
case BEISCSI_BOOT_GET_SINFO:
tag = beiscsi_boot_get_sinfo(phba);
break;
case BEISCSI_BOOT_LOGOUT_SESS:
tag = beiscsi_boot_logout_sess(phba);
break;
case BEISCSI_BOOT_CREATE_KSET:
beiscsi_boot_create_kset(phba);
/**
* updated boot_kset is made visible to all before
* ending the boot work.
*/
mb();
clear_bit(BEISCSI_HBA_BOOT_WORK, &phba->state);
return;
}
if (!tag) {
if (bs->retry--)
schedule_work(&phba->boot_work);
else
clear_bit(BEISCSI_HBA_BOOT_WORK, &phba->state);
}
}
static void beiscsi_eqd_update_work(struct work_struct *work)
{
struct hwi_context_memory *phwi_context;
struct be_set_eqd set_eqd[MAX_CPUS];
struct hwi_controller *phwi_ctrlr;
struct be_eq_obj *pbe_eq;
struct beiscsi_hba *phba;
unsigned int pps, delta;
struct be_aic_obj *aic;
int eqd, i, num = 0;
unsigned long now;
phba = container_of(work, struct beiscsi_hba, eqd_update.work);
if (!beiscsi_hba_is_online(phba))
return;
phwi_ctrlr = phba->phwi_ctrlr;
phwi_context = phwi_ctrlr->phwi_ctxt;
for (i = 0; i <= phba->num_cpus; i++) {
aic = &phba->aic_obj[i];
pbe_eq = &phwi_context->be_eq[i];
now = jiffies;
if (!aic->jiffies || time_before(now, aic->jiffies) ||
pbe_eq->cq_count < aic->eq_prev) {
aic->jiffies = now;
aic->eq_prev = pbe_eq->cq_count;
continue;
}
delta = jiffies_to_msecs(now - aic->jiffies);
pps = (((u32)(pbe_eq->cq_count - aic->eq_prev) * 1000) / delta);
eqd = (pps / 1500) << 2;
if (eqd < 8)
eqd = 0;
eqd = min_t(u32, eqd, BEISCSI_EQ_DELAY_MAX);
eqd = max_t(u32, eqd, BEISCSI_EQ_DELAY_MIN);
aic->jiffies = now;
aic->eq_prev = pbe_eq->cq_count;
if (eqd != aic->prev_eqd) {
set_eqd[num].delay_multiplier = (eqd * 65)/100;
set_eqd[num].eq_id = pbe_eq->q.id;
aic->prev_eqd = eqd;
num++;
}
}
if (num)
/* completion of this is ignored */
beiscsi_modify_eq_delay(phba, set_eqd, num);
schedule_delayed_work(&phba->eqd_update,
msecs_to_jiffies(BEISCSI_EQD_UPDATE_INTERVAL));
}
static void beiscsi_hw_tpe_check(struct timer_list *t)
{
struct beiscsi_hba *phba = from_timer(phba, t, hw_check);
u32 wait;
/* if not TPE, do nothing */
if (!beiscsi_detect_tpe(phba))
return;
/* wait default 4000ms before recovering */
wait = 4000;
if (phba->ue2rp > BEISCSI_UE_DETECT_INTERVAL)
wait = phba->ue2rp - BEISCSI_UE_DETECT_INTERVAL;
queue_delayed_work(phba->wq, &phba->recover_port,
msecs_to_jiffies(wait));
}
static void beiscsi_hw_health_check(struct timer_list *t)
{
struct beiscsi_hba *phba = from_timer(phba, t, hw_check);
beiscsi_detect_ue(phba);
if (beiscsi_detect_ue(phba)) {
__beiscsi_log(phba, KERN_ERR,
"BM_%d : port in error: %lx\n", phba->state);
/* sessions are no longer valid, so first fail the sessions */
queue_work(phba->wq, &phba->sess_work);
/* detect UER supported */
if (!test_bit(BEISCSI_HBA_UER_SUPP, &phba->state))
return;
/* modify this timer to check TPE */
phba->hw_check.function = beiscsi_hw_tpe_check;
}
mod_timer(&phba->hw_check,
jiffies + msecs_to_jiffies(BEISCSI_UE_DETECT_INTERVAL));
}
/*
* beiscsi_enable_port()- Enables the disabled port.
* Only port resources freed in disable function are reallocated.
* This is called in HBA error handling path.
*
* @phba: Instance of driver private structure
*
**/
static int beiscsi_enable_port(struct beiscsi_hba *phba)
{
struct hwi_context_memory *phwi_context;
struct hwi_controller *phwi_ctrlr;
struct be_eq_obj *pbe_eq;
int ret, i;
if (test_bit(BEISCSI_HBA_ONLINE, &phba->state)) {
__beiscsi_log(phba, KERN_ERR,
"BM_%d : %s : port is online %lx\n",
__func__, phba->state);
return 0;
}
ret = beiscsi_init_sliport(phba);
if (ret)
return ret;
be2iscsi_enable_msix(phba);
beiscsi_get_params(phba);
beiscsi_set_host_data(phba);
/* Re-enable UER. If different TPE occurs then it is recoverable. */
beiscsi_set_uer_feature(phba);
phba->shost->max_id = phba->params.cxns_per_ctrl - 1;
phba->shost->can_queue = phba->params.ios_per_ctrl;
ret = beiscsi_init_port(phba);
if (ret < 0) {
__beiscsi_log(phba, KERN_ERR,
"BM_%d : init port failed\n");
goto disable_msix;
}
for (i = 0; i < MAX_MCC_CMD; i++) {
init_waitqueue_head(&phba->ctrl.mcc_wait[i + 1]);
phba->ctrl.mcc_tag[i] = i + 1;
phba->ctrl.mcc_tag_status[i + 1] = 0;
phba->ctrl.mcc_tag_available++;
}
phwi_ctrlr = phba->phwi_ctrlr;
phwi_context = phwi_ctrlr->phwi_ctxt;
for (i = 0; i < phba->num_cpus; i++) {
pbe_eq = &phwi_context->be_eq[i];
irq_poll_init(&pbe_eq->iopoll, be_iopoll_budget, be_iopoll);
}
i = (phba->pcidev->msix_enabled) ? i : 0;
/* Work item for MCC handling */
pbe_eq = &phwi_context->be_eq[i];
INIT_WORK(&pbe_eq->mcc_work, beiscsi_mcc_work);
ret = beiscsi_init_irqs(phba);
if (ret < 0) {
__beiscsi_log(phba, KERN_ERR,
"BM_%d : setup IRQs failed %d\n", ret);
goto cleanup_port;
}
hwi_enable_intr(phba);
/* port operational: clear all error bits */
set_bit(BEISCSI_HBA_ONLINE, &phba->state);
__beiscsi_log(phba, KERN_INFO,
"BM_%d : port online: 0x%lx\n", phba->state);
/* start hw_check timer and eqd_update work */
schedule_delayed_work(&phba->eqd_update,
msecs_to_jiffies(BEISCSI_EQD_UPDATE_INTERVAL));
/**
* Timer function gets modified for TPE detection.
* Always reinit to do health check first.
*/
phba->hw_check.function = beiscsi_hw_health_check;
mod_timer(&phba->hw_check,
jiffies + msecs_to_jiffies(BEISCSI_UE_DETECT_INTERVAL));
return 0;
cleanup_port:
for (i = 0; i < phba->num_cpus; i++) {
pbe_eq = &phwi_context->be_eq[i];
irq_poll_disable(&pbe_eq->iopoll);
}
hwi_cleanup_port(phba);
disable_msix:
pci_free_irq_vectors(phba->pcidev);
return ret;
}
/*
* beiscsi_disable_port()- Disable port and cleanup driver resources.
* This is called in HBA error handling and driver removal.
* @phba: Instance Priv structure
* @unload: indicate driver is unloading
*
* Free the OS and HW resources held by the driver
**/
static void beiscsi_disable_port(struct beiscsi_hba *phba, int unload)
{
struct hwi_context_memory *phwi_context;
struct hwi_controller *phwi_ctrlr;
struct be_eq_obj *pbe_eq;
unsigned int i;
if (!test_and_clear_bit(BEISCSI_HBA_ONLINE, &phba->state))
return;
phwi_ctrlr = phba->phwi_ctrlr;
phwi_context = phwi_ctrlr->phwi_ctxt;
hwi_disable_intr(phba);
beiscsi_free_irqs(phba);
pci_free_irq_vectors(phba->pcidev);
for (i = 0; i < phba->num_cpus; i++) {
pbe_eq = &phwi_context->be_eq[i];
irq_poll_disable(&pbe_eq->iopoll);
}
cancel_delayed_work_sync(&phba->eqd_update);
cancel_work_sync(&phba->boot_work);
/* WQ might be running cancel queued mcc_work if we are not exiting */
if (!unload && beiscsi_hba_in_error(phba)) {
pbe_eq = &phwi_context->be_eq[i];
cancel_work_sync(&pbe_eq->mcc_work);
}
hwi_cleanup_port(phba);
beiscsi_cleanup_port(phba);
}
static void beiscsi_sess_work(struct work_struct *work)
{
struct beiscsi_hba *phba;
phba = container_of(work, struct beiscsi_hba, sess_work);
/*
* This work gets scheduled only in case of HBA error.
* Old sessions are gone so need to be re-established.
* iscsi_session_failure needs process context hence this work.
*/
iscsi_host_for_each_session(phba->shost, beiscsi_session_fail);
}
static void beiscsi_recover_port(struct work_struct *work)
{
struct beiscsi_hba *phba;
phba = container_of(work, struct beiscsi_hba, recover_port.work);
beiscsi_disable_port(phba, 0);
beiscsi_enable_port(phba);
}
static pci_ers_result_t beiscsi_eeh_err_detected(struct pci_dev *pdev,
pci_channel_state_t state)
{
struct beiscsi_hba *phba = NULL;
phba = (struct beiscsi_hba *)pci_get_drvdata(pdev);
set_bit(BEISCSI_HBA_PCI_ERR, &phba->state);
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
"BM_%d : EEH error detected\n");
/* first stop UE detection when PCI error detected */
del_timer_sync(&phba->hw_check);
cancel_delayed_work_sync(&phba->recover_port);
/* sessions are no longer valid, so first fail the sessions */
iscsi_host_for_each_session(phba->shost, beiscsi_session_fail);
beiscsi_disable_port(phba, 0);
if (state == pci_channel_io_perm_failure) {
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
"BM_%d : EEH : State PERM Failure");
return PCI_ERS_RESULT_DISCONNECT;
}
pci_disable_device(pdev);
/* The error could cause the FW to trigger a flash debug dump.
* Resetting the card while flash dump is in progress
* can cause it not to recover; wait for it to finish.
* Wait only for first function as it is needed only once per
* adapter.
**/
if (pdev->devfn == 0)
ssleep(30);
return PCI_ERS_RESULT_NEED_RESET;
}
static pci_ers_result_t beiscsi_eeh_reset(struct pci_dev *pdev)
{
struct beiscsi_hba *phba = NULL;
int status = 0;
phba = (struct beiscsi_hba *)pci_get_drvdata(pdev);
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
"BM_%d : EEH Reset\n");
status = pci_enable_device(pdev);
if (status)
return PCI_ERS_RESULT_DISCONNECT;
pci_set_master(pdev);
pci_set_power_state(pdev, PCI_D0);
pci_restore_state(pdev);
status = beiscsi_check_fw_rdy(phba);
if (status) {
beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_INIT,
"BM_%d : EEH Reset Completed\n");
} else {
beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_INIT,
"BM_%d : EEH Reset Completion Failure\n");
return PCI_ERS_RESULT_DISCONNECT;
}
return PCI_ERS_RESULT_RECOVERED;
}
static void beiscsi_eeh_resume(struct pci_dev *pdev)
{
struct beiscsi_hba *phba;
int ret;
phba = (struct beiscsi_hba *)pci_get_drvdata(pdev);
pci_save_state(pdev);
ret = beiscsi_enable_port(phba);
if (ret)
__beiscsi_log(phba, KERN_ERR,
"BM_%d : AER EEH resume failed\n");
}
static int beiscsi_dev_probe(struct pci_dev *pcidev,
const struct pci_device_id *id)
{
struct hwi_context_memory *phwi_context;
struct hwi_controller *phwi_ctrlr;
struct beiscsi_hba *phba = NULL;
struct be_eq_obj *pbe_eq;
unsigned int s_handle;
int ret, i;
ret = beiscsi_enable_pci(pcidev);
if (ret < 0) {
dev_err(&pcidev->dev,
"beiscsi_dev_probe - Failed to enable pci device\n");
return ret;
}
phba = beiscsi_hba_alloc(pcidev);
if (!phba) {
dev_err(&pcidev->dev,
"beiscsi_dev_probe - Failed in beiscsi_hba_alloc\n");
ret = -ENOMEM;
goto disable_pci;
}
pci_save_state(pcidev);
/* Initialize Driver configuration Paramters */
beiscsi_hba_attrs_init(phba);
phba->mac_addr_set = false;
switch (pcidev->device) {
case BE_DEVICE_ID1:
case OC_DEVICE_ID1:
case OC_DEVICE_ID2:
phba->generation = BE_GEN2;
phba->iotask_fn = beiscsi_iotask;
dev_warn(&pcidev->dev,
"Obsolete/Unsupported BE2 Adapter Family\n");
break;
case BE_DEVICE_ID2:
case OC_DEVICE_ID3:
phba->generation = BE_GEN3;
phba->iotask_fn = beiscsi_iotask;
break;
case OC_SKH_ID1:
phba->generation = BE_GEN4;
phba->iotask_fn = beiscsi_iotask_v2;
break;
default:
phba->generation = 0;
}
ret = be_ctrl_init(phba, pcidev);
if (ret) {
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
"BM_%d : be_ctrl_init failed\n");
goto free_hba;
}
ret = beiscsi_init_sliport(phba);
if (ret)
goto free_hba;
spin_lock_init(&phba->io_sgl_lock);
spin_lock_init(&phba->mgmt_sgl_lock);
spin_lock_init(&phba->async_pdu_lock);
ret = beiscsi_get_fw_config(&phba->ctrl, phba);
if (ret != 0) {
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
"BM_%d : Error getting fw config\n");
goto free_port;
}
beiscsi_get_port_name(&phba->ctrl, phba);
beiscsi_get_params(phba);
beiscsi_set_host_data(phba);
beiscsi_set_uer_feature(phba);
be2iscsi_enable_msix(phba);
beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
"BM_%d : num_cpus = %d\n",
phba->num_cpus);
phba->shost->max_id = phba->params.cxns_per_ctrl;
phba->shost->can_queue = phba->params.ios_per_ctrl;
ret = beiscsi_get_memory(phba);
if (ret < 0) {
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
"BM_%d : alloc host mem failed\n");
goto free_port;
}
ret = beiscsi_init_port(phba);
if (ret < 0) {
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
"BM_%d : init port failed\n");
beiscsi_free_mem(phba);
goto free_port;
}
for (i = 0; i < MAX_MCC_CMD; i++) {
init_waitqueue_head(&phba->ctrl.mcc_wait[i + 1]);
phba->ctrl.mcc_tag[i] = i + 1;
phba->ctrl.mcc_tag_status[i + 1] = 0;
phba->ctrl.mcc_tag_available++;
memset(&phba->ctrl.ptag_state[i].tag_mem_state, 0,
sizeof(struct be_dma_mem));
}
phba->ctrl.mcc_alloc_index = phba->ctrl.mcc_free_index = 0;
phba->wq = alloc_workqueue("beiscsi_%02x_wq", WQ_MEM_RECLAIM, 1,
phba->shost->host_no);
if (!phba->wq) {
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
"BM_%d : beiscsi_dev_probe-"
"Failed to allocate work queue\n");
ret = -ENOMEM;
goto free_twq;
}
INIT_DELAYED_WORK(&phba->eqd_update, beiscsi_eqd_update_work);
phwi_ctrlr = phba->phwi_ctrlr;
phwi_context = phwi_ctrlr->phwi_ctxt;
for (i = 0; i < phba->num_cpus; i++) {
pbe_eq = &phwi_context->be_eq[i];
irq_poll_init(&pbe_eq->iopoll, be_iopoll_budget, be_iopoll);
}
i = (phba->pcidev->msix_enabled) ? i : 0;
/* Work item for MCC handling */
pbe_eq = &phwi_context->be_eq[i];
INIT_WORK(&pbe_eq->mcc_work, beiscsi_mcc_work);
ret = beiscsi_init_irqs(phba);
if (ret < 0) {
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
"BM_%d : beiscsi_dev_probe-"
"Failed to beiscsi_init_irqs\n");
goto disable_iopoll;
}
hwi_enable_intr(phba);
ret = iscsi_host_add(phba->shost, &phba->pcidev->dev);
if (ret)
goto free_irqs;
/* set online bit after port is operational */
set_bit(BEISCSI_HBA_ONLINE, &phba->state);
__beiscsi_log(phba, KERN_INFO,
"BM_%d : port online: 0x%lx\n", phba->state);
INIT_WORK(&phba->boot_work, beiscsi_boot_work);
ret = beiscsi_boot_get_shandle(phba, &s_handle);
if (ret > 0) {
beiscsi_start_boot_work(phba, s_handle);
/**
* Set this bit after starting the work to let
* probe handle it first.
* ASYNC event can too schedule this work.
*/
set_bit(BEISCSI_HBA_BOOT_FOUND, &phba->state);
}
beiscsi_iface_create_default(phba);
schedule_delayed_work(&phba->eqd_update,
msecs_to_jiffies(BEISCSI_EQD_UPDATE_INTERVAL));
INIT_WORK(&phba->sess_work, beiscsi_sess_work);
INIT_DELAYED_WORK(&phba->recover_port, beiscsi_recover_port);
/**
* Start UE detection here. UE before this will cause stall in probe
* and eventually fail the probe.
*/
timer_setup(&phba->hw_check, beiscsi_hw_health_check, 0);
mod_timer(&phba->hw_check,
jiffies + msecs_to_jiffies(BEISCSI_UE_DETECT_INTERVAL));
beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
"\n\n\n BM_%d : SUCCESS - DRIVER LOADED\n\n\n");
return 0;
free_irqs:
hwi_disable_intr(phba);
beiscsi_free_irqs(phba);
disable_iopoll:
for (i = 0; i < phba->num_cpus; i++) {
pbe_eq = &phwi_context->be_eq[i];
irq_poll_disable(&pbe_eq->iopoll);
}
destroy_workqueue(phba->wq);
free_twq:
hwi_cleanup_port(phba);
beiscsi_cleanup_port(phba);
beiscsi_free_mem(phba);
free_port:
dma_free_coherent(&phba->pcidev->dev,
phba->ctrl.mbox_mem_alloced.size,
phba->ctrl.mbox_mem_alloced.va,
phba->ctrl.mbox_mem_alloced.dma);
beiscsi_unmap_pci_function(phba);
free_hba:
pci_disable_msix(phba->pcidev);
pci_dev_put(phba->pcidev);
iscsi_host_free(phba->shost);
pci_set_drvdata(pcidev, NULL);
disable_pci:
pci_release_regions(pcidev);
pci_disable_device(pcidev);
return ret;
}
static void beiscsi_remove(struct pci_dev *pcidev)
{
struct beiscsi_hba *phba = NULL;
phba = pci_get_drvdata(pcidev);
if (!phba) {
dev_err(&pcidev->dev, "beiscsi_remove called with no phba\n");
return;
}
/* first stop UE detection before unloading */
del_timer_sync(&phba->hw_check);
cancel_delayed_work_sync(&phba->recover_port);
cancel_work_sync(&phba->sess_work);
beiscsi_iface_destroy_default(phba);
iscsi_host_remove(phba->shost, false);
beiscsi_disable_port(phba, 1);
/* after cancelling boot_work */
iscsi_boot_destroy_kset(phba->boot_struct.boot_kset);
/* free all resources */
destroy_workqueue(phba->wq);
beiscsi_free_mem(phba);
/* ctrl uninit */
beiscsi_unmap_pci_function(phba);
dma_free_coherent(&phba->pcidev->dev,
phba->ctrl.mbox_mem_alloced.size,
phba->ctrl.mbox_mem_alloced.va,
phba->ctrl.mbox_mem_alloced.dma);
pci_dev_put(phba->pcidev);
iscsi_host_free(phba->shost);
pci_set_drvdata(pcidev, NULL);
pci_release_regions(pcidev);
pci_disable_device(pcidev);
}
static struct pci_error_handlers beiscsi_eeh_handlers = {
.error_detected = beiscsi_eeh_err_detected,
.slot_reset = beiscsi_eeh_reset,
.resume = beiscsi_eeh_resume,
};
struct iscsi_transport beiscsi_iscsi_transport = {
.owner = THIS_MODULE,
.name = DRV_NAME,
.caps = CAP_RECOVERY_L0 | CAP_HDRDGST | CAP_TEXT_NEGO |
CAP_MULTI_R2T | CAP_DATADGST | CAP_DATA_PATH_OFFLOAD,
.create_session = beiscsi_session_create,
.destroy_session = beiscsi_session_destroy,
.create_conn = beiscsi_conn_create,
.bind_conn = beiscsi_conn_bind,
.unbind_conn = iscsi_conn_unbind,
.destroy_conn = iscsi_conn_teardown,
.attr_is_visible = beiscsi_attr_is_visible,
.set_iface_param = beiscsi_iface_set_param,
.get_iface_param = beiscsi_iface_get_param,
.set_param = beiscsi_set_param,
.get_conn_param = iscsi_conn_get_param,
.get_session_param = iscsi_session_get_param,
.get_host_param = beiscsi_get_host_param,
.start_conn = beiscsi_conn_start,
.stop_conn = iscsi_conn_stop,
.send_pdu = iscsi_conn_send_pdu,
.xmit_task = beiscsi_task_xmit,
.cleanup_task = beiscsi_cleanup_task,
.alloc_pdu = beiscsi_alloc_pdu,
.parse_pdu_itt = beiscsi_parse_pdu,
.get_stats = beiscsi_conn_get_stats,
.get_ep_param = beiscsi_ep_get_param,
.ep_connect = beiscsi_ep_connect,
.ep_poll = beiscsi_ep_poll,
.ep_disconnect = beiscsi_ep_disconnect,
.session_recovery_timedout = iscsi_session_recovery_timedout,
.bsg_request = beiscsi_bsg_request,
};
static struct pci_driver beiscsi_pci_driver = {
.name = DRV_NAME,
.probe = beiscsi_dev_probe,
.remove = beiscsi_remove,
.id_table = beiscsi_pci_id_table,
.err_handler = &beiscsi_eeh_handlers
};
static int __init beiscsi_module_init(void)
{
int ret;
beiscsi_scsi_transport =
iscsi_register_transport(&beiscsi_iscsi_transport);
if (!beiscsi_scsi_transport) {
printk(KERN_ERR
"beiscsi_module_init - Unable to register beiscsi transport.\n");
return -ENOMEM;
}
printk(KERN_INFO "In beiscsi_module_init, tt=%p\n",
&beiscsi_iscsi_transport);
ret = pci_register_driver(&beiscsi_pci_driver);
if (ret) {
printk(KERN_ERR
"beiscsi_module_init - Unable to register beiscsi pci driver.\n");
goto unregister_iscsi_transport;
}
return 0;
unregister_iscsi_transport:
iscsi_unregister_transport(&beiscsi_iscsi_transport);
return ret;
}
static void __exit beiscsi_module_exit(void)
{
pci_unregister_driver(&beiscsi_pci_driver);
iscsi_unregister_transport(&beiscsi_iscsi_transport);
}
module_init(beiscsi_module_init);
module_exit(beiscsi_module_exit);
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