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OpenCloudOS-Kernel/drivers/scsi/qedi/qedi_main.c

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/*
* QLogic iSCSI Offload Driver
* Copyright (c) 2016 Cavium Inc.
*
* This software is available under the terms of the GNU General Public License
* (GPL) Version 2, available from the file COPYING in the main directory of
* this source tree.
*/
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/kernel.h>
#include <linux/if_arp.h>
#include <scsi/iscsi_if.h>
#include <linux/inet.h>
#include <net/arp.h>
#include <linux/list.h>
#include <linux/kthread.h>
#include <linux/mm.h>
#include <linux/if_vlan.h>
#include <linux/cpu.h>
#include <linux/iscsi_boot_sysfs.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_eh.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi.h>
#include "qedi.h"
#include "qedi_gbl.h"
#include "qedi_iscsi.h"
static uint qedi_fw_debug;
module_param(qedi_fw_debug, uint, 0644);
MODULE_PARM_DESC(qedi_fw_debug, " Firmware debug level 0(default) to 3");
uint qedi_dbg_log = QEDI_LOG_WARN | QEDI_LOG_SCSI_TM;
module_param(qedi_dbg_log, uint, 0644);
MODULE_PARM_DESC(qedi_dbg_log, " Default debug level");
uint qedi_io_tracing;
module_param(qedi_io_tracing, uint, 0644);
MODULE_PARM_DESC(qedi_io_tracing,
" Enable logging of SCSI requests/completions into trace buffer. (default off).");
uint qedi_ll2_buf_size = 0x400;
module_param(qedi_ll2_buf_size, uint, 0644);
MODULE_PARM_DESC(qedi_ll2_buf_size,
"parameter to set ping packet size, default - 0x400, Jumbo packets - 0x2400.");
const struct qed_iscsi_ops *qedi_ops;
static struct scsi_transport_template *qedi_scsi_transport;
static struct pci_driver qedi_pci_driver;
static DEFINE_PER_CPU(struct qedi_percpu_s, qedi_percpu);
static LIST_HEAD(qedi_udev_list);
/* Static function declaration */
static int qedi_alloc_global_queues(struct qedi_ctx *qedi);
static void qedi_free_global_queues(struct qedi_ctx *qedi);
static struct qedi_cmd *qedi_get_cmd_from_tid(struct qedi_ctx *qedi, u32 tid);
static void qedi_reset_uio_rings(struct qedi_uio_dev *udev);
static void qedi_ll2_free_skbs(struct qedi_ctx *qedi);
static struct nvm_iscsi_block *qedi_get_nvram_block(struct qedi_ctx *qedi);
static int qedi_iscsi_event_cb(void *context, u8 fw_event_code, void *fw_handle)
{
struct qedi_ctx *qedi;
struct qedi_endpoint *qedi_ep;
struct iscsi_eqe_data *data;
int rval = 0;
if (!context || !fw_handle) {
QEDI_ERR(NULL, "Recv event with ctx NULL\n");
return -EINVAL;
}
qedi = (struct qedi_ctx *)context;
QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
"Recv Event %d fw_handle %p\n", fw_event_code, fw_handle);
data = (struct iscsi_eqe_data *)fw_handle;
QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
"icid=0x%x conn_id=0x%x err-code=0x%x error-pdu-opcode-reserved=0x%x\n",
data->icid, data->conn_id, data->error_code,
data->error_pdu_opcode_reserved);
qedi_ep = qedi->ep_tbl[data->icid];
if (!qedi_ep) {
QEDI_WARN(&qedi->dbg_ctx,
"Cannot process event, ep already disconnected, cid=0x%x\n",
data->icid);
WARN_ON(1);
return -ENODEV;
}
switch (fw_event_code) {
case ISCSI_EVENT_TYPE_ASYN_CONNECT_COMPLETE:
if (qedi_ep->state == EP_STATE_OFLDCONN_START)
qedi_ep->state = EP_STATE_OFLDCONN_COMPL;
wake_up_interruptible(&qedi_ep->tcp_ofld_wait);
break;
case ISCSI_EVENT_TYPE_ASYN_TERMINATE_DONE:
qedi_ep->state = EP_STATE_DISCONN_COMPL;
wake_up_interruptible(&qedi_ep->tcp_ofld_wait);
break;
case ISCSI_EVENT_TYPE_ISCSI_CONN_ERROR:
qedi_process_iscsi_error(qedi_ep, data);
break;
case ISCSI_EVENT_TYPE_ASYN_ABORT_RCVD:
case ISCSI_EVENT_TYPE_ASYN_SYN_RCVD:
case ISCSI_EVENT_TYPE_ASYN_MAX_RT_TIME:
case ISCSI_EVENT_TYPE_ASYN_MAX_RT_CNT:
case ISCSI_EVENT_TYPE_ASYN_MAX_KA_PROBES_CNT:
case ISCSI_EVENT_TYPE_ASYN_FIN_WAIT2:
case ISCSI_EVENT_TYPE_TCP_CONN_ERROR:
qedi_process_tcp_error(qedi_ep, data);
break;
default:
QEDI_ERR(&qedi->dbg_ctx, "Recv Unknown Event %u\n",
fw_event_code);
}
return rval;
}
static int qedi_uio_open(struct uio_info *uinfo, struct inode *inode)
{
struct qedi_uio_dev *udev = uinfo->priv;
struct qedi_ctx *qedi = udev->qedi;
if (!capable(CAP_NET_ADMIN))
return -EPERM;
if (udev->uio_dev != -1)
return -EBUSY;
rtnl_lock();
udev->uio_dev = iminor(inode);
qedi_reset_uio_rings(udev);
set_bit(UIO_DEV_OPENED, &qedi->flags);
rtnl_unlock();
return 0;
}
static int qedi_uio_close(struct uio_info *uinfo, struct inode *inode)
{
struct qedi_uio_dev *udev = uinfo->priv;
struct qedi_ctx *qedi = udev->qedi;
udev->uio_dev = -1;
clear_bit(UIO_DEV_OPENED, &qedi->flags);
qedi_ll2_free_skbs(qedi);
return 0;
}
static void __qedi_free_uio_rings(struct qedi_uio_dev *udev)
{
if (udev->uctrl) {
free_page((unsigned long)udev->uctrl);
udev->uctrl = NULL;
}
if (udev->ll2_ring) {
free_page((unsigned long)udev->ll2_ring);
udev->ll2_ring = NULL;
}
if (udev->ll2_buf) {
free_pages((unsigned long)udev->ll2_buf, 2);
udev->ll2_buf = NULL;
}
}
static void __qedi_free_uio(struct qedi_uio_dev *udev)
{
uio_unregister_device(&udev->qedi_uinfo);
__qedi_free_uio_rings(udev);
pci_dev_put(udev->pdev);
kfree(udev);
}
static void qedi_free_uio(struct qedi_uio_dev *udev)
{
if (!udev)
return;
list_del_init(&udev->list);
__qedi_free_uio(udev);
}
static void qedi_reset_uio_rings(struct qedi_uio_dev *udev)
{
struct qedi_ctx *qedi = NULL;
struct qedi_uio_ctrl *uctrl = NULL;
qedi = udev->qedi;
uctrl = udev->uctrl;
spin_lock_bh(&qedi->ll2_lock);
uctrl->host_rx_cons = 0;
uctrl->hw_rx_prod = 0;
uctrl->hw_rx_bd_prod = 0;
uctrl->host_rx_bd_cons = 0;
memset(udev->ll2_ring, 0, udev->ll2_ring_size);
memset(udev->ll2_buf, 0, udev->ll2_buf_size);
spin_unlock_bh(&qedi->ll2_lock);
}
static int __qedi_alloc_uio_rings(struct qedi_uio_dev *udev)
{
int rc = 0;
if (udev->ll2_ring || udev->ll2_buf)
return rc;
/* Memory for control area. */
udev->uctrl = (void *)get_zeroed_page(GFP_KERNEL);
if (!udev->uctrl)
return -ENOMEM;
/* Allocating memory for LL2 ring */
udev->ll2_ring_size = QEDI_PAGE_SIZE;
udev->ll2_ring = (void *)get_zeroed_page(GFP_KERNEL | __GFP_COMP);
if (!udev->ll2_ring) {
rc = -ENOMEM;
goto exit_alloc_ring;
}
/* Allocating memory for Tx/Rx pkt buffer */
udev->ll2_buf_size = TX_RX_RING * qedi_ll2_buf_size;
udev->ll2_buf_size = QEDI_PAGE_ALIGN(udev->ll2_buf_size);
udev->ll2_buf = (void *)__get_free_pages(GFP_KERNEL | __GFP_COMP |
__GFP_ZERO, 2);
if (!udev->ll2_buf) {
rc = -ENOMEM;
goto exit_alloc_buf;
}
return rc;
exit_alloc_buf:
free_page((unsigned long)udev->ll2_ring);
udev->ll2_ring = NULL;
exit_alloc_ring:
return rc;
}
static int qedi_alloc_uio_rings(struct qedi_ctx *qedi)
{
struct qedi_uio_dev *udev = NULL;
int rc = 0;
list_for_each_entry(udev, &qedi_udev_list, list) {
if (udev->pdev == qedi->pdev) {
udev->qedi = qedi;
if (__qedi_alloc_uio_rings(udev)) {
udev->qedi = NULL;
return -ENOMEM;
}
qedi->udev = udev;
return 0;
}
}
udev = kzalloc(sizeof(*udev), GFP_KERNEL);
if (!udev) {
rc = -ENOMEM;
goto err_udev;
}
udev->uio_dev = -1;
udev->qedi = qedi;
udev->pdev = qedi->pdev;
rc = __qedi_alloc_uio_rings(udev);
if (rc)
goto err_uctrl;
list_add(&udev->list, &qedi_udev_list);
pci_dev_get(udev->pdev);
qedi->udev = udev;
udev->tx_pkt = udev->ll2_buf;
udev->rx_pkt = udev->ll2_buf + qedi_ll2_buf_size;
return 0;
err_uctrl:
kfree(udev);
err_udev:
return -ENOMEM;
}
static int qedi_init_uio(struct qedi_ctx *qedi)
{
struct qedi_uio_dev *udev = qedi->udev;
struct uio_info *uinfo;
int ret = 0;
if (!udev)
return -ENOMEM;
uinfo = &udev->qedi_uinfo;
uinfo->mem[0].addr = (unsigned long)udev->uctrl;
uinfo->mem[0].size = sizeof(struct qedi_uio_ctrl);
uinfo->mem[0].memtype = UIO_MEM_LOGICAL;
uinfo->mem[1].addr = (unsigned long)udev->ll2_ring;
uinfo->mem[1].size = udev->ll2_ring_size;
uinfo->mem[1].memtype = UIO_MEM_LOGICAL;
uinfo->mem[2].addr = (unsigned long)udev->ll2_buf;
uinfo->mem[2].size = udev->ll2_buf_size;
uinfo->mem[2].memtype = UIO_MEM_LOGICAL;
uinfo->name = "qedi_uio";
uinfo->version = QEDI_MODULE_VERSION;
uinfo->irq = UIO_IRQ_CUSTOM;
uinfo->open = qedi_uio_open;
uinfo->release = qedi_uio_close;
if (udev->uio_dev == -1) {
if (!uinfo->priv) {
uinfo->priv = udev;
ret = uio_register_device(&udev->pdev->dev, uinfo);
if (ret) {
QEDI_ERR(&qedi->dbg_ctx,
"UIO registration failed\n");
}
}
}
return ret;
}
static int qedi_alloc_and_init_sb(struct qedi_ctx *qedi,
struct qed_sb_info *sb_info, u16 sb_id)
{
struct status_block_e4 *sb_virt;
dma_addr_t sb_phys;
int ret;
sb_virt = dma_alloc_coherent(&qedi->pdev->dev,
sizeof(struct status_block_e4), &sb_phys,
GFP_KERNEL);
if (!sb_virt) {
QEDI_ERR(&qedi->dbg_ctx,
"Status block allocation failed for id = %d.\n",
sb_id);
return -ENOMEM;
}
ret = qedi_ops->common->sb_init(qedi->cdev, sb_info, sb_virt, sb_phys,
sb_id, QED_SB_TYPE_STORAGE);
if (ret) {
QEDI_ERR(&qedi->dbg_ctx,
"Status block initialization failed for id = %d.\n",
sb_id);
return ret;
}
return 0;
}
static void qedi_free_sb(struct qedi_ctx *qedi)
{
struct qed_sb_info *sb_info;
int id;
for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) {
sb_info = &qedi->sb_array[id];
if (sb_info->sb_virt)
dma_free_coherent(&qedi->pdev->dev,
sizeof(*sb_info->sb_virt),
(void *)sb_info->sb_virt,
sb_info->sb_phys);
}
}
static void qedi_free_fp(struct qedi_ctx *qedi)
{
kfree(qedi->fp_array);
kfree(qedi->sb_array);
}
static void qedi_destroy_fp(struct qedi_ctx *qedi)
{
qedi_free_sb(qedi);
qedi_free_fp(qedi);
}
static int qedi_alloc_fp(struct qedi_ctx *qedi)
{
int ret = 0;
qedi->fp_array = kcalloc(MIN_NUM_CPUS_MSIX(qedi),
sizeof(struct qedi_fastpath), GFP_KERNEL);
if (!qedi->fp_array) {
QEDI_ERR(&qedi->dbg_ctx,
"fastpath fp array allocation failed.\n");
return -ENOMEM;
}
qedi->sb_array = kcalloc(MIN_NUM_CPUS_MSIX(qedi),
sizeof(struct qed_sb_info), GFP_KERNEL);
if (!qedi->sb_array) {
QEDI_ERR(&qedi->dbg_ctx,
"fastpath sb array allocation failed.\n");
ret = -ENOMEM;
goto free_fp;
}
return ret;
free_fp:
qedi_free_fp(qedi);
return ret;
}
static void qedi_int_fp(struct qedi_ctx *qedi)
{
struct qedi_fastpath *fp;
int id;
memset(qedi->fp_array, 0, MIN_NUM_CPUS_MSIX(qedi) *
sizeof(*qedi->fp_array));
memset(qedi->sb_array, 0, MIN_NUM_CPUS_MSIX(qedi) *
sizeof(*qedi->sb_array));
for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) {
fp = &qedi->fp_array[id];
fp->sb_info = &qedi->sb_array[id];
fp->sb_id = id;
fp->qedi = qedi;
snprintf(fp->name, sizeof(fp->name), "%s-fp-%d",
"qedi", id);
/* fp_array[i] ---- irq cookie
* So init data which is needed in int ctx
*/
}
}
static int qedi_prepare_fp(struct qedi_ctx *qedi)
{
struct qedi_fastpath *fp;
int id, ret = 0;
ret = qedi_alloc_fp(qedi);
if (ret)
goto err;
qedi_int_fp(qedi);
for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) {
fp = &qedi->fp_array[id];
ret = qedi_alloc_and_init_sb(qedi, fp->sb_info, fp->sb_id);
if (ret) {
QEDI_ERR(&qedi->dbg_ctx,
"SB allocation and initialization failed.\n");
ret = -EIO;
goto err_init;
}
}
return 0;
err_init:
qedi_free_sb(qedi);
qedi_free_fp(qedi);
err:
return ret;
}
static int qedi_setup_cid_que(struct qedi_ctx *qedi)
{
int i;
qedi->cid_que.cid_que_base = kmalloc_array(qedi->max_active_conns,
sizeof(u32), GFP_KERNEL);
if (!qedi->cid_que.cid_que_base)
return -ENOMEM;
qedi->cid_que.conn_cid_tbl = kmalloc_array(qedi->max_active_conns,
sizeof(struct qedi_conn *),
GFP_KERNEL);
if (!qedi->cid_que.conn_cid_tbl) {
kfree(qedi->cid_que.cid_que_base);
qedi->cid_que.cid_que_base = NULL;
return -ENOMEM;
}
qedi->cid_que.cid_que = (u32 *)qedi->cid_que.cid_que_base;
qedi->cid_que.cid_q_prod_idx = 0;
qedi->cid_que.cid_q_cons_idx = 0;
qedi->cid_que.cid_q_max_idx = qedi->max_active_conns;
qedi->cid_que.cid_free_cnt = qedi->max_active_conns;
for (i = 0; i < qedi->max_active_conns; i++) {
qedi->cid_que.cid_que[i] = i;
qedi->cid_que.conn_cid_tbl[i] = NULL;
}
return 0;
}
static void qedi_release_cid_que(struct qedi_ctx *qedi)
{
kfree(qedi->cid_que.cid_que_base);
qedi->cid_que.cid_que_base = NULL;
kfree(qedi->cid_que.conn_cid_tbl);
qedi->cid_que.conn_cid_tbl = NULL;
}
static int qedi_init_id_tbl(struct qedi_portid_tbl *id_tbl, u16 size,
u16 start_id, u16 next)
{
id_tbl->start = start_id;
id_tbl->max = size;
id_tbl->next = next;
spin_lock_init(&id_tbl->lock);
id_tbl->table = kcalloc(BITS_TO_LONGS(size), sizeof(long), GFP_KERNEL);
if (!id_tbl->table)
return -ENOMEM;
return 0;
}
static void qedi_free_id_tbl(struct qedi_portid_tbl *id_tbl)
{
kfree(id_tbl->table);
id_tbl->table = NULL;
}
int qedi_alloc_id(struct qedi_portid_tbl *id_tbl, u16 id)
{
int ret = -1;
id -= id_tbl->start;
if (id >= id_tbl->max)
return ret;
spin_lock(&id_tbl->lock);
if (!test_bit(id, id_tbl->table)) {
set_bit(id, id_tbl->table);
ret = 0;
}
spin_unlock(&id_tbl->lock);
return ret;
}
u16 qedi_alloc_new_id(struct qedi_portid_tbl *id_tbl)
{
u16 id;
spin_lock(&id_tbl->lock);
id = find_next_zero_bit(id_tbl->table, id_tbl->max, id_tbl->next);
if (id >= id_tbl->max) {
id = QEDI_LOCAL_PORT_INVALID;
if (id_tbl->next != 0) {
id = find_first_zero_bit(id_tbl->table, id_tbl->next);
if (id >= id_tbl->next)
id = QEDI_LOCAL_PORT_INVALID;
}
}
if (id < id_tbl->max) {
set_bit(id, id_tbl->table);
id_tbl->next = (id + 1) & (id_tbl->max - 1);
id += id_tbl->start;
}
spin_unlock(&id_tbl->lock);
return id;
}
void qedi_free_id(struct qedi_portid_tbl *id_tbl, u16 id)
{
if (id == QEDI_LOCAL_PORT_INVALID)
return;
id -= id_tbl->start;
if (id >= id_tbl->max)
return;
clear_bit(id, id_tbl->table);
}
static void qedi_cm_free_mem(struct qedi_ctx *qedi)
{
kfree(qedi->ep_tbl);
qedi->ep_tbl = NULL;
qedi_free_id_tbl(&qedi->lcl_port_tbl);
}
static int qedi_cm_alloc_mem(struct qedi_ctx *qedi)
{
u16 port_id;
qedi->ep_tbl = kzalloc((qedi->max_active_conns *
sizeof(struct qedi_endpoint *)), GFP_KERNEL);
if (!qedi->ep_tbl)
return -ENOMEM;
port_id = prandom_u32() % QEDI_LOCAL_PORT_RANGE;
if (qedi_init_id_tbl(&qedi->lcl_port_tbl, QEDI_LOCAL_PORT_RANGE,
QEDI_LOCAL_PORT_MIN, port_id)) {
qedi_cm_free_mem(qedi);
return -ENOMEM;
}
return 0;
}
static struct qedi_ctx *qedi_host_alloc(struct pci_dev *pdev)
{
struct Scsi_Host *shost;
struct qedi_ctx *qedi = NULL;
shost = iscsi_host_alloc(&qedi_host_template,
sizeof(struct qedi_ctx), 0);
if (!shost) {
QEDI_ERR(NULL, "Could not allocate shost\n");
goto exit_setup_shost;
}
shost->max_id = QEDI_MAX_ISCSI_CONNS_PER_HBA;
shost->max_channel = 0;
shost->max_lun = ~0;
shost->max_cmd_len = 16;
shost->transportt = qedi_scsi_transport;
qedi = iscsi_host_priv(shost);
memset(qedi, 0, sizeof(*qedi));
qedi->shost = shost;
qedi->dbg_ctx.host_no = shost->host_no;
qedi->pdev = pdev;
qedi->dbg_ctx.pdev = pdev;
qedi->max_active_conns = ISCSI_MAX_SESS_PER_HBA;
qedi->max_sqes = QEDI_SQ_SIZE;
shost->nr_hw_queues = MIN_NUM_CPUS_MSIX(qedi);
pci_set_drvdata(pdev, qedi);
exit_setup_shost:
return qedi;
}
static int qedi_ll2_rx(void *cookie, struct sk_buff *skb, u32 arg1, u32 arg2)
{
struct qedi_ctx *qedi = (struct qedi_ctx *)cookie;
struct qedi_uio_dev *udev;
struct qedi_uio_ctrl *uctrl;
struct skb_work_list *work;
struct ethhdr *eh;
if (!qedi) {
QEDI_ERR(NULL, "qedi is NULL\n");
return -1;
}
if (!test_bit(UIO_DEV_OPENED, &qedi->flags)) {
QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_UIO,
"UIO DEV is not opened\n");
kfree_skb(skb);
return 0;
}
eh = (struct ethhdr *)skb->data;
/* Undo VLAN encapsulation */
if (eh->h_proto == htons(ETH_P_8021Q)) {
memmove((u8 *)eh + VLAN_HLEN, eh, ETH_ALEN * 2);
eh = (struct ethhdr *)skb_pull(skb, VLAN_HLEN);
skb_reset_mac_header(skb);
}
/* Filter out non FIP/FCoE frames here to free them faster */
if (eh->h_proto != htons(ETH_P_ARP) &&
eh->h_proto != htons(ETH_P_IP) &&
eh->h_proto != htons(ETH_P_IPV6)) {
QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2,
"Dropping frame ethertype [0x%x] len [0x%x].\n",
eh->h_proto, skb->len);
kfree_skb(skb);
return 0;
}
QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2,
"Allowed frame ethertype [0x%x] len [0x%x].\n",
eh->h_proto, skb->len);
udev = qedi->udev;
uctrl = udev->uctrl;
work = kzalloc(sizeof(*work), GFP_ATOMIC);
if (!work) {
QEDI_WARN(&qedi->dbg_ctx,
"Could not allocate work so dropping frame.\n");
kfree_skb(skb);
return 0;
}
INIT_LIST_HEAD(&work->list);
work->skb = skb;
if (skb_vlan_tag_present(skb))
work->vlan_id = skb_vlan_tag_get(skb);
if (work->vlan_id)
__vlan_insert_tag(work->skb, htons(ETH_P_8021Q), work->vlan_id);
spin_lock_bh(&qedi->ll2_lock);
list_add_tail(&work->list, &qedi->ll2_skb_list);
spin_unlock_bh(&qedi->ll2_lock);
wake_up_process(qedi->ll2_recv_thread);
return 0;
}
/* map this skb to iscsiuio mmaped region */
static int qedi_ll2_process_skb(struct qedi_ctx *qedi, struct sk_buff *skb,
u16 vlan_id)
{
struct qedi_uio_dev *udev = NULL;
struct qedi_uio_ctrl *uctrl = NULL;
struct qedi_rx_bd rxbd;
struct qedi_rx_bd *p_rxbd;
u32 rx_bd_prod;
void *pkt;
int len = 0;
u32 prod;
if (!qedi) {
QEDI_ERR(NULL, "qedi is NULL\n");
return -1;
}
udev = qedi->udev;
uctrl = udev->uctrl;
++uctrl->hw_rx_prod_cnt;
prod = (uctrl->hw_rx_prod + 1) % RX_RING;
pkt = udev->rx_pkt + (prod * qedi_ll2_buf_size);
len = min_t(u32, skb->len, (u32)qedi_ll2_buf_size);
memcpy(pkt, skb->data, len);
memset(&rxbd, 0, sizeof(rxbd));
rxbd.rx_pkt_index = prod;
rxbd.rx_pkt_len = len;
rxbd.vlan_id = vlan_id;
uctrl->hw_rx_bd_prod = (uctrl->hw_rx_bd_prod + 1) % QEDI_NUM_RX_BD;
rx_bd_prod = uctrl->hw_rx_bd_prod;
p_rxbd = (struct qedi_rx_bd *)udev->ll2_ring;
p_rxbd += rx_bd_prod;
memcpy(p_rxbd, &rxbd, sizeof(rxbd));
QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2,
"hw_rx_prod [%d] prod [%d] hw_rx_bd_prod [%d] rx_pkt_idx [%d] rx_len [%d].\n",
uctrl->hw_rx_prod, prod, uctrl->hw_rx_bd_prod,
rxbd.rx_pkt_index, rxbd.rx_pkt_len);
QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2,
"host_rx_cons [%d] hw_rx_bd_cons [%d].\n",
uctrl->host_rx_cons, uctrl->host_rx_bd_cons);
uctrl->hw_rx_prod = prod;
/* notify the iscsiuio about new packet */
uio_event_notify(&udev->qedi_uinfo);
return 0;
}
static void qedi_ll2_free_skbs(struct qedi_ctx *qedi)
{
struct skb_work_list *work, *work_tmp;
spin_lock_bh(&qedi->ll2_lock);
list_for_each_entry_safe(work, work_tmp, &qedi->ll2_skb_list, list) {
list_del(&work->list);
if (work->skb)
kfree_skb(work->skb);
kfree(work);
}
spin_unlock_bh(&qedi->ll2_lock);
}
static int qedi_ll2_recv_thread(void *arg)
{
struct qedi_ctx *qedi = (struct qedi_ctx *)arg;
struct skb_work_list *work, *work_tmp;
set_user_nice(current, -20);
while (!kthread_should_stop()) {
spin_lock_bh(&qedi->ll2_lock);
list_for_each_entry_safe(work, work_tmp, &qedi->ll2_skb_list,
list) {
list_del(&work->list);
qedi_ll2_process_skb(qedi, work->skb, work->vlan_id);
kfree_skb(work->skb);
kfree(work);
}
set_current_state(TASK_INTERRUPTIBLE);
spin_unlock_bh(&qedi->ll2_lock);
schedule();
}
__set_current_state(TASK_RUNNING);
return 0;
}
static int qedi_set_iscsi_pf_param(struct qedi_ctx *qedi)
{
u8 num_sq_pages;
u32 log_page_size;
int rval = 0;
num_sq_pages = (MAX_OUTSTANDING_TASKS_PER_CON * 8) / QEDI_PAGE_SIZE;
qedi->num_queues = MIN_NUM_CPUS_MSIX(qedi);
QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
"Number of CQ count is %d\n", qedi->num_queues);
memset(&qedi->pf_params.iscsi_pf_params, 0,
sizeof(qedi->pf_params.iscsi_pf_params));
qedi->p_cpuq = dma_alloc_coherent(&qedi->pdev->dev,
qedi->num_queues * sizeof(struct qedi_glbl_q_params),
&qedi->hw_p_cpuq, GFP_KERNEL);
if (!qedi->p_cpuq) {
QEDI_ERR(&qedi->dbg_ctx, "dma_alloc_coherent fail\n");
rval = -1;
goto err_alloc_mem;
}
rval = qedi_alloc_global_queues(qedi);
if (rval) {
QEDI_ERR(&qedi->dbg_ctx, "Global queue allocation failed.\n");
rval = -1;
goto err_alloc_mem;
}
qedi->pf_params.iscsi_pf_params.num_cons = QEDI_MAX_ISCSI_CONNS_PER_HBA;
qedi->pf_params.iscsi_pf_params.num_tasks = QEDI_MAX_ISCSI_TASK;
qedi->pf_params.iscsi_pf_params.half_way_close_timeout = 10;
qedi->pf_params.iscsi_pf_params.num_sq_pages_in_ring = num_sq_pages;
qedi->pf_params.iscsi_pf_params.num_r2tq_pages_in_ring = num_sq_pages;
qedi->pf_params.iscsi_pf_params.num_uhq_pages_in_ring = num_sq_pages;
qedi->pf_params.iscsi_pf_params.num_queues = qedi->num_queues;
qedi->pf_params.iscsi_pf_params.debug_mode = qedi_fw_debug;
qedi->pf_params.iscsi_pf_params.two_msl_timer = 4000;
qedi->pf_params.iscsi_pf_params.max_fin_rt = 2;
for (log_page_size = 0 ; log_page_size < 32 ; log_page_size++) {
if ((1 << log_page_size) == QEDI_PAGE_SIZE)
break;
}
qedi->pf_params.iscsi_pf_params.log_page_size = log_page_size;
qedi->pf_params.iscsi_pf_params.glbl_q_params_addr =
(u64)qedi->hw_p_cpuq;
/* RQ BDQ initializations.
* rq_num_entries: suggested value for Initiator is 16 (4KB RQ)
* rqe_log_size: 8 for 256B RQE
*/
qedi->pf_params.iscsi_pf_params.rqe_log_size = 8;
/* BDQ address and size */
qedi->pf_params.iscsi_pf_params.bdq_pbl_base_addr[BDQ_ID_RQ] =
qedi->bdq_pbl_list_dma;
qedi->pf_params.iscsi_pf_params.bdq_pbl_num_entries[BDQ_ID_RQ] =
qedi->bdq_pbl_list_num_entries;
qedi->pf_params.iscsi_pf_params.rq_buffer_size = QEDI_BDQ_BUF_SIZE;
/* cq_num_entries: num_tasks + rq_num_entries */
qedi->pf_params.iscsi_pf_params.cq_num_entries = 2048;
qedi->pf_params.iscsi_pf_params.gl_rq_pi = QEDI_PROTO_CQ_PROD_IDX;
qedi->pf_params.iscsi_pf_params.gl_cmd_pi = 1;
err_alloc_mem:
return rval;
}
/* Free DMA coherent memory for array of queue pointers we pass to qed */
static void qedi_free_iscsi_pf_param(struct qedi_ctx *qedi)
{
size_t size = 0;
if (qedi->p_cpuq) {
size = qedi->num_queues * sizeof(struct qedi_glbl_q_params);
dma_free_coherent(&qedi->pdev->dev, size, qedi->p_cpuq,
qedi->hw_p_cpuq);
}
qedi_free_global_queues(qedi);
kfree(qedi->global_queues);
}
static void qedi_get_boot_tgt_info(struct nvm_iscsi_block *block,
struct qedi_boot_target *tgt, u8 index)
{
u32 ipv6_en;
ipv6_en = !!(block->generic.ctrl_flags &
NVM_ISCSI_CFG_GEN_IPV6_ENABLED);
snprintf(tgt->iscsi_name, sizeof(tgt->iscsi_name), "%s\n",
block->target[index].target_name.byte);
tgt->ipv6_en = ipv6_en;
if (ipv6_en)
snprintf(tgt->ip_addr, IPV6_LEN, "%pI6\n",
block->target[index].ipv6_addr.byte);
else
snprintf(tgt->ip_addr, IPV4_LEN, "%pI4\n",
block->target[index].ipv4_addr.byte);
}
static int qedi_find_boot_info(struct qedi_ctx *qedi,
struct qed_mfw_tlv_iscsi *iscsi,
struct nvm_iscsi_block *block)
{
struct qedi_boot_target *pri_tgt = NULL, *sec_tgt = NULL;
u32 pri_ctrl_flags = 0, sec_ctrl_flags = 0, found = 0;
struct iscsi_cls_session *cls_sess;
struct iscsi_cls_conn *cls_conn;
struct qedi_conn *qedi_conn;
struct iscsi_session *sess;
struct iscsi_conn *conn;
char ep_ip_addr[64];
int i, ret = 0;
pri_ctrl_flags = !!(block->target[0].ctrl_flags &
NVM_ISCSI_CFG_TARGET_ENABLED);
if (pri_ctrl_flags) {
pri_tgt = kzalloc(sizeof(*pri_tgt), GFP_KERNEL);
if (!pri_tgt)
return -1;
qedi_get_boot_tgt_info(block, pri_tgt, 0);
}
sec_ctrl_flags = !!(block->target[1].ctrl_flags &
NVM_ISCSI_CFG_TARGET_ENABLED);
if (sec_ctrl_flags) {
sec_tgt = kzalloc(sizeof(*sec_tgt), GFP_KERNEL);
if (!sec_tgt) {
ret = -1;
goto free_tgt;
}
qedi_get_boot_tgt_info(block, sec_tgt, 1);
}
for (i = 0; i < qedi->max_active_conns; i++) {
qedi_conn = qedi_get_conn_from_id(qedi, i);
if (!qedi_conn)
continue;
if (qedi_conn->ep->ip_type == TCP_IPV4)
snprintf(ep_ip_addr, IPV4_LEN, "%pI4\n",
qedi_conn->ep->dst_addr);
else
snprintf(ep_ip_addr, IPV6_LEN, "%pI6\n",
qedi_conn->ep->dst_addr);
cls_conn = qedi_conn->cls_conn;
conn = cls_conn->dd_data;
cls_sess = iscsi_conn_to_session(cls_conn);
sess = cls_sess->dd_data;
if (!iscsi_is_session_online(cls_sess))
continue;
if (pri_ctrl_flags) {
if (!strcmp(pri_tgt->iscsi_name, sess->targetname) &&
!strcmp(pri_tgt->ip_addr, ep_ip_addr)) {
found = 1;
break;
}
}
if (sec_ctrl_flags) {
if (!strcmp(sec_tgt->iscsi_name, sess->targetname) &&
!strcmp(sec_tgt->ip_addr, ep_ip_addr)) {
found = 1;
break;
}
}
}
if (found) {
if (conn->hdrdgst_en) {
iscsi->header_digest_set = true;
iscsi->header_digest = 1;
}
if (conn->datadgst_en) {
iscsi->data_digest_set = true;
iscsi->data_digest = 1;
}
iscsi->boot_taget_portal_set = true;
iscsi->boot_taget_portal = sess->tpgt;
} else {
ret = -1;
}
if (sec_ctrl_flags)
kfree(sec_tgt);
free_tgt:
if (pri_ctrl_flags)
kfree(pri_tgt);
return ret;
}
static void qedi_get_generic_tlv_data(void *dev, struct qed_generic_tlvs *data)
{
struct qedi_ctx *qedi;
if (!dev) {
QEDI_INFO(NULL, QEDI_LOG_EVT,
"dev is NULL so ignoring get_generic_tlv_data request.\n");
return;
}
qedi = (struct qedi_ctx *)dev;
memset(data, 0, sizeof(struct qed_generic_tlvs));
ether_addr_copy(data->mac[0], qedi->mac);
}
/*
* Protocol TLV handler
*/
static void qedi_get_protocol_tlv_data(void *dev, void *data)
{
struct qed_mfw_tlv_iscsi *iscsi = data;
struct qed_iscsi_stats *fw_iscsi_stats;
struct nvm_iscsi_block *block = NULL;
u32 chap_en = 0, mchap_en = 0;
struct qedi_ctx *qedi = dev;
int rval = 0;
fw_iscsi_stats = kmalloc(sizeof(*fw_iscsi_stats), GFP_KERNEL);
if (!fw_iscsi_stats) {
QEDI_ERR(&qedi->dbg_ctx,
"Could not allocate memory for fw_iscsi_stats.\n");
goto exit_get_data;
}
mutex_lock(&qedi->stats_lock);
/* Query firmware for offload stats */
qedi_ops->get_stats(qedi->cdev, fw_iscsi_stats);
mutex_unlock(&qedi->stats_lock);
iscsi->rx_frames_set = true;
iscsi->rx_frames = fw_iscsi_stats->iscsi_rx_packet_cnt;
iscsi->rx_bytes_set = true;
iscsi->rx_bytes = fw_iscsi_stats->iscsi_rx_bytes_cnt;
iscsi->tx_frames_set = true;
iscsi->tx_frames = fw_iscsi_stats->iscsi_tx_packet_cnt;
iscsi->tx_bytes_set = true;
iscsi->tx_bytes = fw_iscsi_stats->iscsi_tx_bytes_cnt;
iscsi->frame_size_set = true;
iscsi->frame_size = qedi->ll2_mtu;
block = qedi_get_nvram_block(qedi);
if (block) {
chap_en = !!(block->generic.ctrl_flags &
NVM_ISCSI_CFG_GEN_CHAP_ENABLED);
mchap_en = !!(block->generic.ctrl_flags &
NVM_ISCSI_CFG_GEN_CHAP_MUTUAL_ENABLED);
iscsi->auth_method_set = (chap_en || mchap_en) ? true : false;
iscsi->auth_method = 1;
if (chap_en)
iscsi->auth_method = 2;
if (mchap_en)
iscsi->auth_method = 3;
iscsi->tx_desc_size_set = true;
iscsi->tx_desc_size = QEDI_SQ_SIZE;
iscsi->rx_desc_size_set = true;
iscsi->rx_desc_size = QEDI_CQ_SIZE;
/* tpgt, hdr digest, data digest */
rval = qedi_find_boot_info(qedi, iscsi, block);
if (rval)
QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
"Boot target not set");
}
kfree(fw_iscsi_stats);
exit_get_data:
return;
}
static void qedi_link_update(void *dev, struct qed_link_output *link)
{
struct qedi_ctx *qedi = (struct qedi_ctx *)dev;
if (link->link_up) {
QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "Link Up event.\n");
atomic_set(&qedi->link_state, QEDI_LINK_UP);
} else {
QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
"Link Down event.\n");
atomic_set(&qedi->link_state, QEDI_LINK_DOWN);
}
}
static struct qed_iscsi_cb_ops qedi_cb_ops = {
{
.link_update = qedi_link_update,
.get_protocol_tlv_data = qedi_get_protocol_tlv_data,
.get_generic_tlv_data = qedi_get_generic_tlv_data,
}
};
static int qedi_queue_cqe(struct qedi_ctx *qedi, union iscsi_cqe *cqe,
u16 que_idx, struct qedi_percpu_s *p)
{
struct qedi_work *qedi_work;
struct qedi_conn *q_conn;
struct iscsi_conn *conn;
struct qedi_cmd *qedi_cmd;
u32 iscsi_cid;
int rc = 0;
iscsi_cid = cqe->cqe_common.conn_id;
q_conn = qedi->cid_que.conn_cid_tbl[iscsi_cid];
if (!q_conn) {
QEDI_WARN(&qedi->dbg_ctx,
"Session no longer exists for cid=0x%x!!\n",
iscsi_cid);
return -1;
}
conn = q_conn->cls_conn->dd_data;
switch (cqe->cqe_common.cqe_type) {
case ISCSI_CQE_TYPE_SOLICITED:
case ISCSI_CQE_TYPE_SOLICITED_WITH_SENSE:
qedi_cmd = qedi_get_cmd_from_tid(qedi, cqe->cqe_solicited.itid);
if (!qedi_cmd) {
rc = -1;
break;
}
INIT_LIST_HEAD(&qedi_cmd->cqe_work.list);
qedi_cmd->cqe_work.qedi = qedi;
memcpy(&qedi_cmd->cqe_work.cqe, cqe, sizeof(union iscsi_cqe));
qedi_cmd->cqe_work.que_idx = que_idx;
qedi_cmd->cqe_work.is_solicited = true;
list_add_tail(&qedi_cmd->cqe_work.list, &p->work_list);
break;
case ISCSI_CQE_TYPE_UNSOLICITED:
case ISCSI_CQE_TYPE_DUMMY:
case ISCSI_CQE_TYPE_TASK_CLEANUP:
qedi_work = kzalloc(sizeof(*qedi_work), GFP_ATOMIC);
if (!qedi_work) {
rc = -1;
break;
}
INIT_LIST_HEAD(&qedi_work->list);
qedi_work->qedi = qedi;
memcpy(&qedi_work->cqe, cqe, sizeof(union iscsi_cqe));
qedi_work->que_idx = que_idx;
qedi_work->is_solicited = false;
list_add_tail(&qedi_work->list, &p->work_list);
break;
default:
rc = -1;
QEDI_ERR(&qedi->dbg_ctx, "FW Error cqe.\n");
}
return rc;
}
static bool qedi_process_completions(struct qedi_fastpath *fp)
{
struct qedi_ctx *qedi = fp->qedi;
struct qed_sb_info *sb_info = fp->sb_info;
struct status_block_e4 *sb = sb_info->sb_virt;
struct qedi_percpu_s *p = NULL;
struct global_queue *que;
u16 prod_idx;
unsigned long flags;
union iscsi_cqe *cqe;
int cpu;
int ret;
/* Get the current firmware producer index */
prod_idx = sb->pi_array[QEDI_PROTO_CQ_PROD_IDX];
if (prod_idx >= QEDI_CQ_SIZE)
prod_idx = prod_idx % QEDI_CQ_SIZE;
que = qedi->global_queues[fp->sb_id];
QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO,
"Before: global queue=%p prod_idx=%d cons_idx=%d, sb_id=%d\n",
que, prod_idx, que->cq_cons_idx, fp->sb_id);
qedi->intr_cpu = fp->sb_id;
cpu = smp_processor_id();
p = &per_cpu(qedi_percpu, cpu);
if (unlikely(!p->iothread))
WARN_ON(1);
spin_lock_irqsave(&p->p_work_lock, flags);
while (que->cq_cons_idx != prod_idx) {
cqe = &que->cq[que->cq_cons_idx];
QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO,
"cqe=%p prod_idx=%d cons_idx=%d.\n",
cqe, prod_idx, que->cq_cons_idx);
ret = qedi_queue_cqe(qedi, cqe, fp->sb_id, p);
if (ret)
QEDI_WARN(&qedi->dbg_ctx,
"Dropping CQE 0x%x for cid=0x%x.\n",
que->cq_cons_idx, cqe->cqe_common.conn_id);
que->cq_cons_idx++;
if (que->cq_cons_idx == QEDI_CQ_SIZE)
que->cq_cons_idx = 0;
}
wake_up_process(p->iothread);
spin_unlock_irqrestore(&p->p_work_lock, flags);
return true;
}
static bool qedi_fp_has_work(struct qedi_fastpath *fp)
{
struct qedi_ctx *qedi = fp->qedi;
struct global_queue *que;
struct qed_sb_info *sb_info = fp->sb_info;
struct status_block_e4 *sb = sb_info->sb_virt;
u16 prod_idx;
barrier();
/* Get the current firmware producer index */
prod_idx = sb->pi_array[QEDI_PROTO_CQ_PROD_IDX];
/* Get the pointer to the global CQ this completion is on */
que = qedi->global_queues[fp->sb_id];
/* prod idx wrap around uint16 */
if (prod_idx >= QEDI_CQ_SIZE)
prod_idx = prod_idx % QEDI_CQ_SIZE;
return (que->cq_cons_idx != prod_idx);
}
/* MSI-X fastpath handler code */
static irqreturn_t qedi_msix_handler(int irq, void *dev_id)
{
struct qedi_fastpath *fp = dev_id;
struct qedi_ctx *qedi = fp->qedi;
bool wake_io_thread = true;
qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0);
process_again:
wake_io_thread = qedi_process_completions(fp);
if (wake_io_thread) {
QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
"process already running\n");
}
if (qedi_fp_has_work(fp) == 0)
qed_sb_update_sb_idx(fp->sb_info);
/* Check for more work */
rmb();
if (qedi_fp_has_work(fp) == 0)
qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1);
else
goto process_again;
return IRQ_HANDLED;
}
/* simd handler for MSI/INTa */
static void qedi_simd_int_handler(void *cookie)
{
/* Cookie is qedi_ctx struct */
struct qedi_ctx *qedi = (struct qedi_ctx *)cookie;
QEDI_WARN(&qedi->dbg_ctx, "qedi=%p.\n", qedi);
}
#define QEDI_SIMD_HANDLER_NUM 0
static void qedi_sync_free_irqs(struct qedi_ctx *qedi)
{
int i;
if (qedi->int_info.msix_cnt) {
for (i = 0; i < qedi->int_info.used_cnt; i++) {
synchronize_irq(qedi->int_info.msix[i].vector);
irq_set_affinity_hint(qedi->int_info.msix[i].vector,
NULL);
free_irq(qedi->int_info.msix[i].vector,
&qedi->fp_array[i]);
}
} else {
qedi_ops->common->simd_handler_clean(qedi->cdev,
QEDI_SIMD_HANDLER_NUM);
}
qedi->int_info.used_cnt = 0;
qedi_ops->common->set_fp_int(qedi->cdev, 0);
}
static int qedi_request_msix_irq(struct qedi_ctx *qedi)
{
int i, rc, cpu;
cpu = cpumask_first(cpu_online_mask);
for (i = 0; i < qedi->int_info.msix_cnt; i++) {
rc = request_irq(qedi->int_info.msix[i].vector,
qedi_msix_handler, 0, "qedi",
&qedi->fp_array[i]);
if (rc) {
QEDI_WARN(&qedi->dbg_ctx, "request_irq failed.\n");
qedi_sync_free_irqs(qedi);
return rc;
}
qedi->int_info.used_cnt++;
rc = irq_set_affinity_hint(qedi->int_info.msix[i].vector,
get_cpu_mask(cpu));
cpu = cpumask_next(cpu, cpu_online_mask);
}
return 0;
}
static int qedi_setup_int(struct qedi_ctx *qedi)
{
int rc = 0;
rc = qedi_ops->common->set_fp_int(qedi->cdev, num_online_cpus());
rc = qedi_ops->common->get_fp_int(qedi->cdev, &qedi->int_info);
if (rc)
goto exit_setup_int;
QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
"Number of msix_cnt = 0x%x num of cpus = 0x%x\n",
qedi->int_info.msix_cnt, num_online_cpus());
if (qedi->int_info.msix_cnt) {
rc = qedi_request_msix_irq(qedi);
goto exit_setup_int;
} else {
qedi_ops->common->simd_handler_config(qedi->cdev, &qedi,
QEDI_SIMD_HANDLER_NUM,
qedi_simd_int_handler);
qedi->int_info.used_cnt = 1;
}
exit_setup_int:
return rc;
}
static void qedi_free_nvm_iscsi_cfg(struct qedi_ctx *qedi)
{
if (qedi->iscsi_image)
dma_free_coherent(&qedi->pdev->dev,
sizeof(struct qedi_nvm_iscsi_image),
qedi->iscsi_image, qedi->nvm_buf_dma);
}
static int qedi_alloc_nvm_iscsi_cfg(struct qedi_ctx *qedi)
{
struct qedi_nvm_iscsi_image nvm_image;
qedi->iscsi_image = dma_zalloc_coherent(&qedi->pdev->dev,
sizeof(nvm_image),
&qedi->nvm_buf_dma,
GFP_KERNEL);
if (!qedi->iscsi_image) {
QEDI_ERR(&qedi->dbg_ctx, "Could not allocate NVM BUF.\n");
return -ENOMEM;
}
QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
"NVM BUF addr=0x%p dma=0x%llx.\n", qedi->iscsi_image,
qedi->nvm_buf_dma);
return 0;
}
static void qedi_free_bdq(struct qedi_ctx *qedi)
{
int i;
if (qedi->bdq_pbl_list)
dma_free_coherent(&qedi->pdev->dev, QEDI_PAGE_SIZE,
qedi->bdq_pbl_list, qedi->bdq_pbl_list_dma);
if (qedi->bdq_pbl)
dma_free_coherent(&qedi->pdev->dev, qedi->bdq_pbl_mem_size,
qedi->bdq_pbl, qedi->bdq_pbl_dma);
for (i = 0; i < QEDI_BDQ_NUM; i++) {
if (qedi->bdq[i].buf_addr) {
dma_free_coherent(&qedi->pdev->dev, QEDI_BDQ_BUF_SIZE,
qedi->bdq[i].buf_addr,
qedi->bdq[i].buf_dma);
}
}
}
static void qedi_free_global_queues(struct qedi_ctx *qedi)
{
int i;
struct global_queue **gl = qedi->global_queues;
for (i = 0; i < qedi->num_queues; i++) {
if (!gl[i])
continue;
if (gl[i]->cq)
dma_free_coherent(&qedi->pdev->dev, gl[i]->cq_mem_size,
gl[i]->cq, gl[i]->cq_dma);
if (gl[i]->cq_pbl)
dma_free_coherent(&qedi->pdev->dev, gl[i]->cq_pbl_size,
gl[i]->cq_pbl, gl[i]->cq_pbl_dma);
kfree(gl[i]);
}
qedi_free_bdq(qedi);
qedi_free_nvm_iscsi_cfg(qedi);
}
static int qedi_alloc_bdq(struct qedi_ctx *qedi)
{
int i;
struct scsi_bd *pbl;
u64 *list;
dma_addr_t page;
/* Alloc dma memory for BDQ buffers */
for (i = 0; i < QEDI_BDQ_NUM; i++) {
qedi->bdq[i].buf_addr =
dma_alloc_coherent(&qedi->pdev->dev,
QEDI_BDQ_BUF_SIZE,
&qedi->bdq[i].buf_dma,
GFP_KERNEL);
if (!qedi->bdq[i].buf_addr) {
QEDI_ERR(&qedi->dbg_ctx,
"Could not allocate BDQ buffer %d.\n", i);
return -ENOMEM;
}
}
/* Alloc dma memory for BDQ page buffer list */
qedi->bdq_pbl_mem_size = QEDI_BDQ_NUM * sizeof(struct scsi_bd);
qedi->bdq_pbl_mem_size = ALIGN(qedi->bdq_pbl_mem_size, QEDI_PAGE_SIZE);
qedi->rq_num_entries = qedi->bdq_pbl_mem_size / sizeof(struct scsi_bd);
QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, "rq_num_entries = %d.\n",
qedi->rq_num_entries);
qedi->bdq_pbl = dma_alloc_coherent(&qedi->pdev->dev,
qedi->bdq_pbl_mem_size,
&qedi->bdq_pbl_dma, GFP_KERNEL);
if (!qedi->bdq_pbl) {
QEDI_ERR(&qedi->dbg_ctx, "Could not allocate BDQ PBL.\n");
return -ENOMEM;
}
/*
* Populate BDQ PBL with physical and virtual address of individual
* BDQ buffers
*/
pbl = (struct scsi_bd *)qedi->bdq_pbl;
for (i = 0; i < QEDI_BDQ_NUM; i++) {
pbl->address.hi =
cpu_to_le32(QEDI_U64_HI(qedi->bdq[i].buf_dma));
pbl->address.lo =
cpu_to_le32(QEDI_U64_LO(qedi->bdq[i].buf_dma));
QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
"pbl [0x%p] pbl->address hi [0x%llx] lo [0x%llx], idx [%d]\n",
pbl, pbl->address.hi, pbl->address.lo, i);
pbl->opaque.iscsi_opaque.reserved_zero[0] = 0;
pbl->opaque.iscsi_opaque.reserved_zero[1] = 0;
pbl->opaque.iscsi_opaque.reserved_zero[2] = 0;
pbl->opaque.iscsi_opaque.opaque = cpu_to_le16(i);
pbl++;
}
/* Allocate list of PBL pages */
qedi->bdq_pbl_list = dma_zalloc_coherent(&qedi->pdev->dev,
QEDI_PAGE_SIZE,
&qedi->bdq_pbl_list_dma,
GFP_KERNEL);
if (!qedi->bdq_pbl_list) {
QEDI_ERR(&qedi->dbg_ctx,
"Could not allocate list of PBL pages.\n");
return -ENOMEM;
}
/*
* Now populate PBL list with pages that contain pointers to the
* individual buffers.
*/
qedi->bdq_pbl_list_num_entries = qedi->bdq_pbl_mem_size /
QEDI_PAGE_SIZE;
list = (u64 *)qedi->bdq_pbl_list;
page = qedi->bdq_pbl_list_dma;
for (i = 0; i < qedi->bdq_pbl_list_num_entries; i++) {
*list = qedi->bdq_pbl_dma;
list++;
page += QEDI_PAGE_SIZE;
}
return 0;
}
static int qedi_alloc_global_queues(struct qedi_ctx *qedi)
{
u32 *list;
int i;
int status = 0, rc;
u32 *pbl;
dma_addr_t page;
int num_pages;
/*
* Number of global queues (CQ / RQ). This should
* be <= number of available MSIX vectors for the PF
*/
if (!qedi->num_queues) {
QEDI_ERR(&qedi->dbg_ctx, "No MSI-X vectors available!\n");
return 1;
}
/* Make sure we allocated the PBL that will contain the physical
* addresses of our queues
*/
if (!qedi->p_cpuq) {
status = 1;
goto mem_alloc_failure;
}
qedi->global_queues = kzalloc((sizeof(struct global_queue *) *
qedi->num_queues), GFP_KERNEL);
if (!qedi->global_queues) {
QEDI_ERR(&qedi->dbg_ctx,
"Unable to allocate global queues array ptr memory\n");
return -ENOMEM;
}
QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
"qedi->global_queues=%p.\n", qedi->global_queues);
/* Allocate DMA coherent buffers for BDQ */
rc = qedi_alloc_bdq(qedi);
if (rc)
goto mem_alloc_failure;
/* Allocate DMA coherent buffers for NVM_ISCSI_CFG */
rc = qedi_alloc_nvm_iscsi_cfg(qedi);
if (rc)
goto mem_alloc_failure;
/* Allocate a CQ and an associated PBL for each MSI-X
* vector.
*/
for (i = 0; i < qedi->num_queues; i++) {
qedi->global_queues[i] =
kzalloc(sizeof(*qedi->global_queues[0]),
GFP_KERNEL);
if (!qedi->global_queues[i]) {
QEDI_ERR(&qedi->dbg_ctx,
"Unable to allocation global queue %d.\n", i);
goto mem_alloc_failure;
}
qedi->global_queues[i]->cq_mem_size =
(QEDI_CQ_SIZE + 8) * sizeof(union iscsi_cqe);
qedi->global_queues[i]->cq_mem_size =
(qedi->global_queues[i]->cq_mem_size +
(QEDI_PAGE_SIZE - 1));
qedi->global_queues[i]->cq_pbl_size =
(qedi->global_queues[i]->cq_mem_size /
QEDI_PAGE_SIZE) * sizeof(void *);
qedi->global_queues[i]->cq_pbl_size =
(qedi->global_queues[i]->cq_pbl_size +
(QEDI_PAGE_SIZE - 1));
qedi->global_queues[i]->cq = dma_zalloc_coherent(&qedi->pdev->dev,
qedi->global_queues[i]->cq_mem_size,
&qedi->global_queues[i]->cq_dma,
GFP_KERNEL);
if (!qedi->global_queues[i]->cq) {
QEDI_WARN(&qedi->dbg_ctx,
"Could not allocate cq.\n");
status = -ENOMEM;
goto mem_alloc_failure;
}
qedi->global_queues[i]->cq_pbl = dma_zalloc_coherent(&qedi->pdev->dev,
qedi->global_queues[i]->cq_pbl_size,
&qedi->global_queues[i]->cq_pbl_dma,
GFP_KERNEL);
if (!qedi->global_queues[i]->cq_pbl) {
QEDI_WARN(&qedi->dbg_ctx,
"Could not allocate cq PBL.\n");
status = -ENOMEM;
goto mem_alloc_failure;
}
/* Create PBL */
num_pages = qedi->global_queues[i]->cq_mem_size /
QEDI_PAGE_SIZE;
page = qedi->global_queues[i]->cq_dma;
pbl = (u32 *)qedi->global_queues[i]->cq_pbl;
while (num_pages--) {
*pbl = (u32)page;
pbl++;
*pbl = (u32)((u64)page >> 32);
pbl++;
page += QEDI_PAGE_SIZE;
}
}
list = (u32 *)qedi->p_cpuq;
/*
* The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer,
* CQ#1 PBL pointer, RQ#1 PBL pointer, etc. Each PBL pointer points
* to the physical address which contains an array of pointers to the
* physical addresses of the specific queue pages.
*/
for (i = 0; i < qedi->num_queues; i++) {
*list = (u32)qedi->global_queues[i]->cq_pbl_dma;
list++;
*list = (u32)((u64)qedi->global_queues[i]->cq_pbl_dma >> 32);
list++;
*list = (u32)0;
list++;
*list = (u32)((u64)0 >> 32);
list++;
}
return 0;
mem_alloc_failure:
qedi_free_global_queues(qedi);
return status;
}
int qedi_alloc_sq(struct qedi_ctx *qedi, struct qedi_endpoint *ep)
{
int rval = 0;
u32 *pbl;
dma_addr_t page;
int num_pages;
if (!ep)
return -EIO;
/* Calculate appropriate queue and PBL sizes */
ep->sq_mem_size = QEDI_SQ_SIZE * sizeof(struct iscsi_wqe);
ep->sq_mem_size += QEDI_PAGE_SIZE - 1;
ep->sq_pbl_size = (ep->sq_mem_size / QEDI_PAGE_SIZE) * sizeof(void *);
ep->sq_pbl_size = ep->sq_pbl_size + QEDI_PAGE_SIZE;
ep->sq = dma_zalloc_coherent(&qedi->pdev->dev, ep->sq_mem_size,
&ep->sq_dma, GFP_KERNEL);
if (!ep->sq) {
QEDI_WARN(&qedi->dbg_ctx,
"Could not allocate send queue.\n");
rval = -ENOMEM;
goto out;
}
ep->sq_pbl = dma_zalloc_coherent(&qedi->pdev->dev, ep->sq_pbl_size,
&ep->sq_pbl_dma, GFP_KERNEL);
if (!ep->sq_pbl) {
QEDI_WARN(&qedi->dbg_ctx,
"Could not allocate send queue PBL.\n");
rval = -ENOMEM;
goto out_free_sq;
}
/* Create PBL */
num_pages = ep->sq_mem_size / QEDI_PAGE_SIZE;
page = ep->sq_dma;
pbl = (u32 *)ep->sq_pbl;
while (num_pages--) {
*pbl = (u32)page;
pbl++;
*pbl = (u32)((u64)page >> 32);
pbl++;
page += QEDI_PAGE_SIZE;
}
return rval;
out_free_sq:
dma_free_coherent(&qedi->pdev->dev, ep->sq_mem_size, ep->sq,
ep->sq_dma);
out:
return rval;
}
void qedi_free_sq(struct qedi_ctx *qedi, struct qedi_endpoint *ep)
{
if (ep->sq_pbl)
dma_free_coherent(&qedi->pdev->dev, ep->sq_pbl_size, ep->sq_pbl,
ep->sq_pbl_dma);
if (ep->sq)
dma_free_coherent(&qedi->pdev->dev, ep->sq_mem_size, ep->sq,
ep->sq_dma);
}
int qedi_get_task_idx(struct qedi_ctx *qedi)
{
s16 tmp_idx;
again:
tmp_idx = find_first_zero_bit(qedi->task_idx_map,
MAX_ISCSI_TASK_ENTRIES);
if (tmp_idx >= MAX_ISCSI_TASK_ENTRIES) {
QEDI_ERR(&qedi->dbg_ctx, "FW task context pool is full.\n");
tmp_idx = -1;
goto err_idx;
}
if (test_and_set_bit(tmp_idx, qedi->task_idx_map))
goto again;
err_idx:
return tmp_idx;
}
void qedi_clear_task_idx(struct qedi_ctx *qedi, int idx)
{
if (!test_and_clear_bit(idx, qedi->task_idx_map))
QEDI_ERR(&qedi->dbg_ctx,
"FW task context, already cleared, tid=0x%x\n", idx);
}
void qedi_update_itt_map(struct qedi_ctx *qedi, u32 tid, u32 proto_itt,
struct qedi_cmd *cmd)
{
qedi->itt_map[tid].itt = proto_itt;
qedi->itt_map[tid].p_cmd = cmd;
QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
"update itt map tid=0x%x, with proto itt=0x%x\n", tid,
qedi->itt_map[tid].itt);
}
void qedi_get_task_tid(struct qedi_ctx *qedi, u32 itt, s16 *tid)
{
u16 i;
for (i = 0; i < MAX_ISCSI_TASK_ENTRIES; i++) {
if (qedi->itt_map[i].itt == itt) {
*tid = i;
QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
"Ref itt=0x%x, found at tid=0x%x\n",
itt, *tid);
return;
}
}
WARN_ON(1);
}
void qedi_get_proto_itt(struct qedi_ctx *qedi, u32 tid, u32 *proto_itt)
{
*proto_itt = qedi->itt_map[tid].itt;
QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
"Get itt map tid [0x%x with proto itt[0x%x]",
tid, *proto_itt);
}
struct qedi_cmd *qedi_get_cmd_from_tid(struct qedi_ctx *qedi, u32 tid)
{
struct qedi_cmd *cmd = NULL;
if (tid >= MAX_ISCSI_TASK_ENTRIES)
return NULL;
cmd = qedi->itt_map[tid].p_cmd;
if (cmd->task_id != tid)
return NULL;
qedi->itt_map[tid].p_cmd = NULL;
return cmd;
}
static int qedi_alloc_itt(struct qedi_ctx *qedi)
{
qedi->itt_map = kcalloc(MAX_ISCSI_TASK_ENTRIES,
sizeof(struct qedi_itt_map), GFP_KERNEL);
if (!qedi->itt_map) {
QEDI_ERR(&qedi->dbg_ctx,
"Unable to allocate itt map array memory\n");
return -ENOMEM;
}
return 0;
}
static void qedi_free_itt(struct qedi_ctx *qedi)
{
kfree(qedi->itt_map);
}
static struct qed_ll2_cb_ops qedi_ll2_cb_ops = {
.rx_cb = qedi_ll2_rx,
.tx_cb = NULL,
};
static int qedi_percpu_io_thread(void *arg)
{
struct qedi_percpu_s *p = arg;
struct qedi_work *work, *tmp;
unsigned long flags;
LIST_HEAD(work_list);
set_user_nice(current, -20);
while (!kthread_should_stop()) {
spin_lock_irqsave(&p->p_work_lock, flags);
while (!list_empty(&p->work_list)) {
list_splice_init(&p->work_list, &work_list);
spin_unlock_irqrestore(&p->p_work_lock, flags);
list_for_each_entry_safe(work, tmp, &work_list, list) {
list_del_init(&work->list);
qedi_fp_process_cqes(work);
if (!work->is_solicited)
kfree(work);
}
cond_resched();
spin_lock_irqsave(&p->p_work_lock, flags);
}
set_current_state(TASK_INTERRUPTIBLE);
spin_unlock_irqrestore(&p->p_work_lock, flags);
schedule();
}
__set_current_state(TASK_RUNNING);
return 0;
}
static int qedi_cpu_online(unsigned int cpu)
{
struct qedi_percpu_s *p = this_cpu_ptr(&qedi_percpu);
struct task_struct *thread;
thread = kthread_create_on_node(qedi_percpu_io_thread, (void *)p,
cpu_to_node(cpu),
"qedi_thread/%d", cpu);
if (IS_ERR(thread))
return PTR_ERR(thread);
kthread_bind(thread, cpu);
p->iothread = thread;
wake_up_process(thread);
return 0;
}
static int qedi_cpu_offline(unsigned int cpu)
{
struct qedi_percpu_s *p = this_cpu_ptr(&qedi_percpu);
struct qedi_work *work, *tmp;
struct task_struct *thread;
spin_lock_bh(&p->p_work_lock);
thread = p->iothread;
p->iothread = NULL;
list_for_each_entry_safe(work, tmp, &p->work_list, list) {
list_del_init(&work->list);
qedi_fp_process_cqes(work);
if (!work->is_solicited)
kfree(work);
}
spin_unlock_bh(&p->p_work_lock);
if (thread)
kthread_stop(thread);
return 0;
}
void qedi_reset_host_mtu(struct qedi_ctx *qedi, u16 mtu)
{
struct qed_ll2_params params;
qedi_recover_all_conns(qedi);
qedi_ops->ll2->stop(qedi->cdev);
qedi_ll2_free_skbs(qedi);
QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "old MTU %u, new MTU %u\n",
qedi->ll2_mtu, mtu);
memset(&params, 0, sizeof(params));
qedi->ll2_mtu = mtu;
params.mtu = qedi->ll2_mtu + IPV6_HDR_LEN + TCP_HDR_LEN;
params.drop_ttl0_packets = 0;
params.rx_vlan_stripping = 1;
ether_addr_copy(params.ll2_mac_address, qedi->dev_info.common.hw_mac);
qedi_ops->ll2->start(qedi->cdev, &params);
}
/**
* qedi_get_nvram_block: - Scan through the iSCSI NVRAM block (while accounting
* for gaps) for the matching absolute-pf-id of the QEDI device.
*/
static struct nvm_iscsi_block *
qedi_get_nvram_block(struct qedi_ctx *qedi)
{
int i;
u8 pf;
u32 flags;
struct nvm_iscsi_block *block;
pf = qedi->dev_info.common.abs_pf_id;
block = &qedi->iscsi_image->iscsi_cfg.block[0];
for (i = 0; i < NUM_OF_ISCSI_PF_SUPPORTED; i++, block++) {
flags = ((block->id) & NVM_ISCSI_CFG_BLK_CTRL_FLAG_MASK) >>
NVM_ISCSI_CFG_BLK_CTRL_FLAG_OFFSET;
if (flags & (NVM_ISCSI_CFG_BLK_CTRL_FLAG_IS_NOT_EMPTY |
NVM_ISCSI_CFG_BLK_CTRL_FLAG_PF_MAPPED) &&
(pf == (block->id & NVM_ISCSI_CFG_BLK_MAPPED_PF_ID_MASK)
>> NVM_ISCSI_CFG_BLK_MAPPED_PF_ID_OFFSET))
return block;
}
return NULL;
}
static ssize_t qedi_show_boot_eth_info(void *data, int type, char *buf)
{
struct qedi_ctx *qedi = data;
struct nvm_iscsi_initiator *initiator;
int rc = 1;
u32 ipv6_en, dhcp_en, ip_len;
struct nvm_iscsi_block *block;
char *fmt, *ip, *sub, *gw;
block = qedi_get_nvram_block(qedi);
if (!block)
return 0;
initiator = &block->initiator;
ipv6_en = block->generic.ctrl_flags &
NVM_ISCSI_CFG_GEN_IPV6_ENABLED;
dhcp_en = block->generic.ctrl_flags &
NVM_ISCSI_CFG_GEN_DHCP_TCPIP_CONFIG_ENABLED;
/* Static IP assignments. */
fmt = ipv6_en ? "%pI6\n" : "%pI4\n";
ip = ipv6_en ? initiator->ipv6.addr.byte : initiator->ipv4.addr.byte;
ip_len = ipv6_en ? IPV6_LEN : IPV4_LEN;
sub = ipv6_en ? initiator->ipv6.subnet_mask.byte :
initiator->ipv4.subnet_mask.byte;
gw = ipv6_en ? initiator->ipv6.gateway.byte :
initiator->ipv4.gateway.byte;
/* DHCP IP adjustments. */
fmt = dhcp_en ? "%s\n" : fmt;
if (dhcp_en) {
ip = ipv6_en ? "0::0" : "0.0.0.0";
sub = ip;
gw = ip;
ip_len = ipv6_en ? 5 : 8;
}
switch (type) {
case ISCSI_BOOT_ETH_IP_ADDR:
rc = snprintf(buf, ip_len, fmt, ip);
break;
case ISCSI_BOOT_ETH_SUBNET_MASK:
rc = snprintf(buf, ip_len, fmt, sub);
break;
case ISCSI_BOOT_ETH_GATEWAY:
rc = snprintf(buf, ip_len, fmt, gw);
break;
case ISCSI_BOOT_ETH_FLAGS:
rc = snprintf(buf, 3, "%hhd\n",
SYSFS_FLAG_FW_SEL_BOOT);
break;
case ISCSI_BOOT_ETH_INDEX:
rc = snprintf(buf, 3, "0\n");
break;
case ISCSI_BOOT_ETH_MAC:
rc = sysfs_format_mac(buf, qedi->mac, ETH_ALEN);
break;
case ISCSI_BOOT_ETH_VLAN:
rc = snprintf(buf, 12, "%d\n",
GET_FIELD2(initiator->generic_cont0,
NVM_ISCSI_CFG_INITIATOR_VLAN));
break;
case ISCSI_BOOT_ETH_ORIGIN:
if (dhcp_en)
rc = snprintf(buf, 3, "3\n");
break;
default:
rc = 0;
break;
}
return rc;
}
static umode_t qedi_eth_get_attr_visibility(void *data, int type)
{
int rc = 1;
switch (type) {
case ISCSI_BOOT_ETH_FLAGS:
case ISCSI_BOOT_ETH_MAC:
case ISCSI_BOOT_ETH_INDEX:
case ISCSI_BOOT_ETH_IP_ADDR:
case ISCSI_BOOT_ETH_SUBNET_MASK:
case ISCSI_BOOT_ETH_GATEWAY:
case ISCSI_BOOT_ETH_ORIGIN:
case ISCSI_BOOT_ETH_VLAN:
rc = 0444;
break;
default:
rc = 0;
break;
}
return rc;
}
static ssize_t qedi_show_boot_ini_info(void *data, int type, char *buf)
{
struct qedi_ctx *qedi = data;
struct nvm_iscsi_initiator *initiator;
int rc;
struct nvm_iscsi_block *block;
block = qedi_get_nvram_block(qedi);
if (!block)
return 0;
initiator = &block->initiator;
switch (type) {
case ISCSI_BOOT_INI_INITIATOR_NAME:
rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_ISCSI_NAME_MAX_LEN,
initiator->initiator_name.byte);
break;
default:
rc = 0;
break;
}
return rc;
}
static umode_t qedi_ini_get_attr_visibility(void *data, int type)
{
int rc;
switch (type) {
case ISCSI_BOOT_INI_INITIATOR_NAME:
rc = 0444;
break;
default:
rc = 0;
break;
}
return rc;
}
static ssize_t
qedi_show_boot_tgt_info(struct qedi_ctx *qedi, int type,
char *buf, enum qedi_nvm_tgts idx)
{
int rc = 1;
u32 ctrl_flags, ipv6_en, chap_en, mchap_en, ip_len;
struct nvm_iscsi_block *block;
char *chap_name, *chap_secret;
char *mchap_name, *mchap_secret;
block = qedi_get_nvram_block(qedi);
if (!block)
goto exit_show_tgt_info;
QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_EVT,
"Port:%d, tgt_idx:%d\n",
GET_FIELD2(block->id, NVM_ISCSI_CFG_BLK_MAPPED_PF_ID), idx);
ctrl_flags = block->target[idx].ctrl_flags &
NVM_ISCSI_CFG_TARGET_ENABLED;
if (!ctrl_flags) {
QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_EVT,
"Target disabled\n");
goto exit_show_tgt_info;
}
ipv6_en = block->generic.ctrl_flags &
NVM_ISCSI_CFG_GEN_IPV6_ENABLED;
ip_len = ipv6_en ? IPV6_LEN : IPV4_LEN;
chap_en = block->generic.ctrl_flags &
NVM_ISCSI_CFG_GEN_CHAP_ENABLED;
chap_name = chap_en ? block->initiator.chap_name.byte : NULL;
chap_secret = chap_en ? block->initiator.chap_password.byte : NULL;
mchap_en = block->generic.ctrl_flags &
NVM_ISCSI_CFG_GEN_CHAP_MUTUAL_ENABLED;
mchap_name = mchap_en ? block->target[idx].chap_name.byte : NULL;
mchap_secret = mchap_en ? block->target[idx].chap_password.byte : NULL;
switch (type) {
case ISCSI_BOOT_TGT_NAME:
rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_ISCSI_NAME_MAX_LEN,
block->target[idx].target_name.byte);
break;
case ISCSI_BOOT_TGT_IP_ADDR:
if (ipv6_en)
rc = snprintf(buf, ip_len, "%pI6\n",
block->target[idx].ipv6_addr.byte);
else
rc = snprintf(buf, ip_len, "%pI4\n",
block->target[idx].ipv4_addr.byte);
break;
case ISCSI_BOOT_TGT_PORT:
rc = snprintf(buf, 12, "%d\n",
GET_FIELD2(block->target[idx].generic_cont0,
NVM_ISCSI_CFG_TARGET_TCP_PORT));
break;
case ISCSI_BOOT_TGT_LUN:
rc = snprintf(buf, 22, "%.*d\n",
block->target[idx].lun.value[1],
block->target[idx].lun.value[0]);
break;
case ISCSI_BOOT_TGT_CHAP_NAME:
rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN,
chap_name);
break;
case ISCSI_BOOT_TGT_CHAP_SECRET:
rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN,
chap_secret);
break;
case ISCSI_BOOT_TGT_REV_CHAP_NAME:
rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN,
mchap_name);
break;
case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN,
mchap_secret);
break;
case ISCSI_BOOT_TGT_FLAGS:
rc = snprintf(buf, 3, "%hhd\n", SYSFS_FLAG_FW_SEL_BOOT);
break;
case ISCSI_BOOT_TGT_NIC_ASSOC:
rc = snprintf(buf, 3, "0\n");
break;
default:
rc = 0;
break;
}
exit_show_tgt_info:
return rc;
}
static ssize_t qedi_show_boot_tgt_pri_info(void *data, int type, char *buf)
{
struct qedi_ctx *qedi = data;
return qedi_show_boot_tgt_info(qedi, type, buf, QEDI_NVM_TGT_PRI);
}
static ssize_t qedi_show_boot_tgt_sec_info(void *data, int type, char *buf)
{
struct qedi_ctx *qedi = data;
return qedi_show_boot_tgt_info(qedi, type, buf, QEDI_NVM_TGT_SEC);
}
static umode_t qedi_tgt_get_attr_visibility(void *data, int type)
{
int rc;
switch (type) {
case ISCSI_BOOT_TGT_NAME:
case ISCSI_BOOT_TGT_IP_ADDR:
case ISCSI_BOOT_TGT_PORT:
case ISCSI_BOOT_TGT_LUN:
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 = 0444;
break;
default:
rc = 0;
break;
}
return rc;
}
static void qedi_boot_release(void *data)
{
struct qedi_ctx *qedi = data;
scsi_host_put(qedi->shost);
}
static int qedi_get_boot_info(struct qedi_ctx *qedi)
{
int ret = 1;
struct qedi_nvm_iscsi_image nvm_image;
QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
"Get NVM iSCSI CFG image\n");
ret = qedi_ops->common->nvm_get_image(qedi->cdev,
QED_NVM_IMAGE_ISCSI_CFG,
(char *)qedi->iscsi_image,
sizeof(nvm_image));
if (ret)
QEDI_ERR(&qedi->dbg_ctx,
"Could not get NVM image. ret = %d\n", ret);
return ret;
}
static int qedi_setup_boot_info(struct qedi_ctx *qedi)
{
struct iscsi_boot_kobj *boot_kobj;
if (qedi_get_boot_info(qedi))
return -EPERM;
qedi->boot_kset = iscsi_boot_create_host_kset(qedi->shost->host_no);
if (!qedi->boot_kset)
goto kset_free;
if (!scsi_host_get(qedi->shost))
goto kset_free;
boot_kobj = iscsi_boot_create_target(qedi->boot_kset, 0, qedi,
qedi_show_boot_tgt_pri_info,
qedi_tgt_get_attr_visibility,
qedi_boot_release);
if (!boot_kobj)
goto put_host;
if (!scsi_host_get(qedi->shost))
goto kset_free;
boot_kobj = iscsi_boot_create_target(qedi->boot_kset, 1, qedi,
qedi_show_boot_tgt_sec_info,
qedi_tgt_get_attr_visibility,
qedi_boot_release);
if (!boot_kobj)
goto put_host;
if (!scsi_host_get(qedi->shost))
goto kset_free;
boot_kobj = iscsi_boot_create_initiator(qedi->boot_kset, 0, qedi,
qedi_show_boot_ini_info,
qedi_ini_get_attr_visibility,
qedi_boot_release);
if (!boot_kobj)
goto put_host;
if (!scsi_host_get(qedi->shost))
goto kset_free;
boot_kobj = iscsi_boot_create_ethernet(qedi->boot_kset, 0, qedi,
qedi_show_boot_eth_info,
qedi_eth_get_attr_visibility,
qedi_boot_release);
if (!boot_kobj)
goto put_host;
return 0;
put_host:
scsi_host_put(qedi->shost);
kset_free:
iscsi_boot_destroy_kset(qedi->boot_kset);
return -ENOMEM;
}
static void __qedi_remove(struct pci_dev *pdev, int mode)
{
struct qedi_ctx *qedi = pci_get_drvdata(pdev);
int rval;
if (qedi->tmf_thread) {
flush_workqueue(qedi->tmf_thread);
destroy_workqueue(qedi->tmf_thread);
qedi->tmf_thread = NULL;
}
if (qedi->offload_thread) {
flush_workqueue(qedi->offload_thread);
destroy_workqueue(qedi->offload_thread);
qedi->offload_thread = NULL;
}
#ifdef CONFIG_DEBUG_FS
qedi_dbg_host_exit(&qedi->dbg_ctx);
#endif
if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags))
qedi_ops->common->set_power_state(qedi->cdev, PCI_D0);
qedi_sync_free_irqs(qedi);
if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) {
qedi_ops->stop(qedi->cdev);
qedi_ops->ll2->stop(qedi->cdev);
}
if (mode == QEDI_MODE_NORMAL)
qedi_free_iscsi_pf_param(qedi);
rval = qedi_ops->common->update_drv_state(qedi->cdev, false);
if (rval)
QEDI_ERR(&qedi->dbg_ctx, "Failed to send drv state to MFW\n");
if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) {
qedi_ops->common->slowpath_stop(qedi->cdev);
qedi_ops->common->remove(qedi->cdev);
}
qedi_destroy_fp(qedi);
if (mode == QEDI_MODE_NORMAL) {
qedi_release_cid_que(qedi);
qedi_cm_free_mem(qedi);
qedi_free_uio(qedi->udev);
qedi_free_itt(qedi);
iscsi_host_remove(qedi->shost);
iscsi_host_free(qedi->shost);
if (qedi->ll2_recv_thread) {
kthread_stop(qedi->ll2_recv_thread);
qedi->ll2_recv_thread = NULL;
}
qedi_ll2_free_skbs(qedi);
if (qedi->boot_kset)
iscsi_boot_destroy_kset(qedi->boot_kset);
}
}
static int __qedi_probe(struct pci_dev *pdev, int mode)
{
struct qedi_ctx *qedi;
struct qed_ll2_params params;
u32 dp_module = 0;
u8 dp_level = 0;
bool is_vf = false;
char host_buf[16];
struct qed_link_params link_params;
struct qed_slowpath_params sp_params;
struct qed_probe_params qed_params;
void *task_start, *task_end;
int rc;
u16 tmp;
if (mode != QEDI_MODE_RECOVERY) {
qedi = qedi_host_alloc(pdev);
if (!qedi) {
rc = -ENOMEM;
goto exit_probe;
}
} else {
qedi = pci_get_drvdata(pdev);
}
memset(&qed_params, 0, sizeof(qed_params));
qed_params.protocol = QED_PROTOCOL_ISCSI;
qed_params.dp_module = dp_module;
qed_params.dp_level = dp_level;
qed_params.is_vf = is_vf;
qedi->cdev = qedi_ops->common->probe(pdev, &qed_params);
if (!qedi->cdev) {
rc = -ENODEV;
QEDI_ERR(&qedi->dbg_ctx, "Cannot initialize hardware\n");
goto free_host;
}
atomic_set(&qedi->link_state, QEDI_LINK_DOWN);
rc = qedi_ops->fill_dev_info(qedi->cdev, &qedi->dev_info);
if (rc)
goto free_host;
if (mode != QEDI_MODE_RECOVERY) {
rc = qedi_set_iscsi_pf_param(qedi);
if (rc) {
rc = -ENOMEM;
QEDI_ERR(&qedi->dbg_ctx,
"Set iSCSI pf param fail\n");
goto free_host;
}
}
qedi_ops->common->update_pf_params(qedi->cdev, &qedi->pf_params);
rc = qedi_prepare_fp(qedi);
if (rc) {
QEDI_ERR(&qedi->dbg_ctx, "Cannot start slowpath.\n");
goto free_pf_params;
}
/* Start the Slowpath-process */
memset(&sp_params, 0, sizeof(struct qed_slowpath_params));
sp_params.int_mode = QED_INT_MODE_MSIX;
sp_params.drv_major = QEDI_DRIVER_MAJOR_VER;
sp_params.drv_minor = QEDI_DRIVER_MINOR_VER;
sp_params.drv_rev = QEDI_DRIVER_REV_VER;
sp_params.drv_eng = QEDI_DRIVER_ENG_VER;
strlcpy(sp_params.name, "qedi iSCSI", QED_DRV_VER_STR_SIZE);
rc = qedi_ops->common->slowpath_start(qedi->cdev, &sp_params);
if (rc) {
QEDI_ERR(&qedi->dbg_ctx, "Cannot start slowpath\n");
goto stop_hw;
}
/* update_pf_params needs to be called before and after slowpath
* start
*/
qedi_ops->common->update_pf_params(qedi->cdev, &qedi->pf_params);
rc = qedi_setup_int(qedi);
if (rc)
goto stop_iscsi_func;
qedi_ops->common->set_power_state(qedi->cdev, PCI_D0);
/* Learn information crucial for qedi to progress */
rc = qedi_ops->fill_dev_info(qedi->cdev, &qedi->dev_info);
if (rc)
goto stop_iscsi_func;
/* Record BDQ producer doorbell addresses */
qedi->bdq_primary_prod = qedi->dev_info.primary_dbq_rq_addr;
qedi->bdq_secondary_prod = qedi->dev_info.secondary_bdq_rq_addr;
QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
"BDQ primary_prod=%p secondary_prod=%p.\n",
qedi->bdq_primary_prod,
qedi->bdq_secondary_prod);
/*
* We need to write the number of BDs in the BDQ we've preallocated so
* the f/w will do a prefetch and we'll get an unsolicited CQE when a
* packet arrives.
*/
qedi->bdq_prod_idx = QEDI_BDQ_NUM;
QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
"Writing %d to primary and secondary BDQ doorbell registers.\n",
qedi->bdq_prod_idx);
writew(qedi->bdq_prod_idx, qedi->bdq_primary_prod);
tmp = readw(qedi->bdq_primary_prod);
writew(qedi->bdq_prod_idx, qedi->bdq_secondary_prod);
tmp = readw(qedi->bdq_secondary_prod);
ether_addr_copy(qedi->mac, qedi->dev_info.common.hw_mac);
QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, "MAC address is %pM.\n",
qedi->mac);
sprintf(host_buf, "host_%d", qedi->shost->host_no);
qedi_ops->common->set_name(qedi->cdev, host_buf);
qedi_ops->register_ops(qedi->cdev, &qedi_cb_ops, qedi);
memset(&params, 0, sizeof(params));
params.mtu = DEF_PATH_MTU + IPV6_HDR_LEN + TCP_HDR_LEN;
qedi->ll2_mtu = DEF_PATH_MTU;
params.drop_ttl0_packets = 0;
params.rx_vlan_stripping = 1;
ether_addr_copy(params.ll2_mac_address, qedi->dev_info.common.hw_mac);
if (mode != QEDI_MODE_RECOVERY) {
/* set up rx path */
INIT_LIST_HEAD(&qedi->ll2_skb_list);
spin_lock_init(&qedi->ll2_lock);
/* start qedi context */
spin_lock_init(&qedi->hba_lock);
spin_lock_init(&qedi->task_idx_lock);
mutex_init(&qedi->stats_lock);
}
qedi_ops->ll2->register_cb_ops(qedi->cdev, &qedi_ll2_cb_ops, qedi);
qedi_ops->ll2->start(qedi->cdev, &params);
if (mode != QEDI_MODE_RECOVERY) {
qedi->ll2_recv_thread = kthread_run(qedi_ll2_recv_thread,
(void *)qedi,
"qedi_ll2_thread");
}
rc = qedi_ops->start(qedi->cdev, &qedi->tasks,
qedi, qedi_iscsi_event_cb);
if (rc) {
rc = -ENODEV;
QEDI_ERR(&qedi->dbg_ctx, "Cannot start iSCSI function\n");
goto stop_slowpath;
}
task_start = qedi_get_task_mem(&qedi->tasks, 0);
task_end = qedi_get_task_mem(&qedi->tasks, MAX_TID_BLOCKS_ISCSI - 1);
QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
"Task context start=%p, end=%p block_size=%u.\n",
task_start, task_end, qedi->tasks.size);
memset(&link_params, 0, sizeof(link_params));
link_params.link_up = true;
rc = qedi_ops->common->set_link(qedi->cdev, &link_params);
if (rc) {
QEDI_WARN(&qedi->dbg_ctx, "Link set up failed.\n");
atomic_set(&qedi->link_state, QEDI_LINK_DOWN);
}
#ifdef CONFIG_DEBUG_FS
qedi_dbg_host_init(&qedi->dbg_ctx, qedi_debugfs_ops,
qedi_dbg_fops);
#endif
QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
"QLogic FastLinQ iSCSI Module qedi %s, FW %d.%d.%d.%d\n",
QEDI_MODULE_VERSION, FW_MAJOR_VERSION, FW_MINOR_VERSION,
FW_REVISION_VERSION, FW_ENGINEERING_VERSION);
if (mode == QEDI_MODE_NORMAL) {
if (iscsi_host_add(qedi->shost, &pdev->dev)) {
QEDI_ERR(&qedi->dbg_ctx,
"Could not add iscsi host\n");
rc = -ENOMEM;
goto remove_host;
}
/* Allocate uio buffers */
rc = qedi_alloc_uio_rings(qedi);
if (rc) {
QEDI_ERR(&qedi->dbg_ctx,
"UIO alloc ring failed err=%d\n", rc);
goto remove_host;
}
rc = qedi_init_uio(qedi);
if (rc) {
QEDI_ERR(&qedi->dbg_ctx,
"UIO init failed, err=%d\n", rc);
goto free_uio;
}
/* host the array on iscsi_conn */
rc = qedi_setup_cid_que(qedi);
if (rc) {
QEDI_ERR(&qedi->dbg_ctx,
"Could not setup cid que\n");
goto free_uio;
}
rc = qedi_cm_alloc_mem(qedi);
if (rc) {
QEDI_ERR(&qedi->dbg_ctx,
"Could not alloc cm memory\n");
goto free_cid_que;
}
rc = qedi_alloc_itt(qedi);
if (rc) {
QEDI_ERR(&qedi->dbg_ctx,
"Could not alloc itt memory\n");
goto free_cid_que;
}
sprintf(host_buf, "host_%d", qedi->shost->host_no);
qedi->tmf_thread = create_singlethread_workqueue(host_buf);
if (!qedi->tmf_thread) {
QEDI_ERR(&qedi->dbg_ctx,
"Unable to start tmf thread!\n");
rc = -ENODEV;
goto free_cid_que;
}
sprintf(host_buf, "qedi_ofld%d", qedi->shost->host_no);
qedi->offload_thread = create_workqueue(host_buf);
if (!qedi->offload_thread) {
QEDI_ERR(&qedi->dbg_ctx,
"Unable to start offload thread!\n");
rc = -ENODEV;
goto free_cid_que;
}
/* F/w needs 1st task context memory entry for performance */
set_bit(QEDI_RESERVE_TASK_ID, qedi->task_idx_map);
atomic_set(&qedi->num_offloads, 0);
if (qedi_setup_boot_info(qedi))
QEDI_ERR(&qedi->dbg_ctx,
"No iSCSI boot target configured\n");
rc = qedi_ops->common->update_drv_state(qedi->cdev, true);
if (rc)
QEDI_ERR(&qedi->dbg_ctx,
"Failed to send drv state to MFW\n");
}
return 0;
free_cid_que:
qedi_release_cid_que(qedi);
free_uio:
qedi_free_uio(qedi->udev);
remove_host:
#ifdef CONFIG_DEBUG_FS
qedi_dbg_host_exit(&qedi->dbg_ctx);
#endif
iscsi_host_remove(qedi->shost);
stop_iscsi_func:
qedi_ops->stop(qedi->cdev);
stop_slowpath:
qedi_ops->common->slowpath_stop(qedi->cdev);
stop_hw:
qedi_ops->common->remove(qedi->cdev);
free_pf_params:
qedi_free_iscsi_pf_param(qedi);
free_host:
iscsi_host_free(qedi->shost);
exit_probe:
return rc;
}
static int qedi_probe(struct pci_dev *pdev, const struct pci_device_id *id)
{
return __qedi_probe(pdev, QEDI_MODE_NORMAL);
}
static void qedi_remove(struct pci_dev *pdev)
{
__qedi_remove(pdev, QEDI_MODE_NORMAL);
}
static struct pci_device_id qedi_pci_tbl[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165E) },
{ PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8084) },
{ 0 },
};
MODULE_DEVICE_TABLE(pci, qedi_pci_tbl);
static enum cpuhp_state qedi_cpuhp_state;
static struct pci_driver qedi_pci_driver = {
.name = QEDI_MODULE_NAME,
.id_table = qedi_pci_tbl,
.probe = qedi_probe,
.remove = qedi_remove,
};
static int __init qedi_init(void)
{
struct qedi_percpu_s *p;
int cpu, rc = 0;
qedi_ops = qed_get_iscsi_ops();
if (!qedi_ops) {
QEDI_ERR(NULL, "Failed to get qed iSCSI operations\n");
return -EINVAL;
}
#ifdef CONFIG_DEBUG_FS
qedi_dbg_init("qedi");
#endif
qedi_scsi_transport = iscsi_register_transport(&qedi_iscsi_transport);
if (!qedi_scsi_transport) {
QEDI_ERR(NULL, "Could not register qedi transport");
rc = -ENOMEM;
goto exit_qedi_init_1;
}
for_each_possible_cpu(cpu) {
p = &per_cpu(qedi_percpu, cpu);
INIT_LIST_HEAD(&p->work_list);
spin_lock_init(&p->p_work_lock);
p->iothread = NULL;
}
rc = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "scsi/qedi:online",
qedi_cpu_online, qedi_cpu_offline);
if (rc < 0)
goto exit_qedi_init_2;
qedi_cpuhp_state = rc;
rc = pci_register_driver(&qedi_pci_driver);
if (rc) {
QEDI_ERR(NULL, "Failed to register driver\n");
goto exit_qedi_hp;
}
return 0;
exit_qedi_hp:
cpuhp_remove_state(qedi_cpuhp_state);
exit_qedi_init_2:
iscsi_unregister_transport(&qedi_iscsi_transport);
exit_qedi_init_1:
#ifdef CONFIG_DEBUG_FS
qedi_dbg_exit();
#endif
qed_put_iscsi_ops();
return rc;
}
static void __exit qedi_cleanup(void)
{
pci_unregister_driver(&qedi_pci_driver);
cpuhp_remove_state(qedi_cpuhp_state);
iscsi_unregister_transport(&qedi_iscsi_transport);
#ifdef CONFIG_DEBUG_FS
qedi_dbg_exit();
#endif
qed_put_iscsi_ops();
}
MODULE_DESCRIPTION("QLogic FastLinQ 4xxxx iSCSI Module");
MODULE_LICENSE("GPL");
MODULE_AUTHOR("QLogic Corporation");
MODULE_VERSION(QEDI_MODULE_VERSION);
module_init(qedi_init);
module_exit(qedi_cleanup);
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