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linux-sg2042/drivers/scsi/bnx2fc/bnx2fc_tgt.c

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/* bnx2fc_tgt.c: QLogic Linux FCoE offload driver.
* Handles operations such as session offload/upload etc, and manages
* session resources such as connection id and qp resources.
*
* Copyright (c) 2008-2013 Broadcom Corporation
* Copyright (c) 2014-2015 QLogic Corporation
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation.
*
* Written by: Bhanu Prakash Gollapudi (bprakash@broadcom.com)
*/
#include "bnx2fc.h"
static void bnx2fc_upld_timer(unsigned long data);
static void bnx2fc_ofld_timer(unsigned long data);
static int bnx2fc_init_tgt(struct bnx2fc_rport *tgt,
struct fcoe_port *port,
struct fc_rport_priv *rdata);
static u32 bnx2fc_alloc_conn_id(struct bnx2fc_hba *hba,
struct bnx2fc_rport *tgt);
static int bnx2fc_alloc_session_resc(struct bnx2fc_hba *hba,
struct bnx2fc_rport *tgt);
static void bnx2fc_free_session_resc(struct bnx2fc_hba *hba,
struct bnx2fc_rport *tgt);
static void bnx2fc_free_conn_id(struct bnx2fc_hba *hba, u32 conn_id);
static void bnx2fc_upld_timer(unsigned long data)
{
struct bnx2fc_rport *tgt = (struct bnx2fc_rport *)data;
BNX2FC_TGT_DBG(tgt, "upld_timer - Upload compl not received!!\n");
/* fake upload completion */
clear_bit(BNX2FC_FLAG_OFFLOADED, &tgt->flags);
clear_bit(BNX2FC_FLAG_ENABLED, &tgt->flags);
set_bit(BNX2FC_FLAG_UPLD_REQ_COMPL, &tgt->flags);
wake_up_interruptible(&tgt->upld_wait);
}
static void bnx2fc_ofld_timer(unsigned long data)
{
struct bnx2fc_rport *tgt = (struct bnx2fc_rport *)data;
BNX2FC_TGT_DBG(tgt, "entered bnx2fc_ofld_timer\n");
/* NOTE: This function should never be called, as
* offload should never timeout
*/
/*
* If the timer has expired, this session is dead
* Clear offloaded flag and logout of this device.
* Since OFFLOADED flag is cleared, this case
* will be considered as offload error and the
* port will be logged off, and conn_id, session
* resources are freed up in bnx2fc_offload_session
*/
clear_bit(BNX2FC_FLAG_OFFLOADED, &tgt->flags);
clear_bit(BNX2FC_FLAG_ENABLED, &tgt->flags);
set_bit(BNX2FC_FLAG_OFLD_REQ_CMPL, &tgt->flags);
wake_up_interruptible(&tgt->ofld_wait);
}
static void bnx2fc_ofld_wait(struct bnx2fc_rport *tgt)
{
setup_timer(&tgt->ofld_timer, bnx2fc_ofld_timer, (unsigned long)tgt);
mod_timer(&tgt->ofld_timer, jiffies + BNX2FC_FW_TIMEOUT);
wait_event_interruptible(tgt->ofld_wait,
(test_bit(
BNX2FC_FLAG_OFLD_REQ_CMPL,
&tgt->flags)));
if (signal_pending(current))
flush_signals(current);
del_timer_sync(&tgt->ofld_timer);
}
static void bnx2fc_offload_session(struct fcoe_port *port,
struct bnx2fc_rport *tgt,
struct fc_rport_priv *rdata)
{
struct fc_lport *lport = rdata->local_port;
struct fc_rport *rport = rdata->rport;
struct bnx2fc_interface *interface = port->priv;
struct bnx2fc_hba *hba = interface->hba;
int rval;
int i = 0;
/* Initialize bnx2fc_rport */
/* NOTE: tgt is already bzero'd */
rval = bnx2fc_init_tgt(tgt, port, rdata);
if (rval) {
printk(KERN_ERR PFX "Failed to allocate conn id for "
"port_id (%6x)\n", rport->port_id);
goto tgt_init_err;
}
/* Allocate session resources */
rval = bnx2fc_alloc_session_resc(hba, tgt);
if (rval) {
printk(KERN_ERR PFX "Failed to allocate resources\n");
goto ofld_err;
}
/*
* Initialize FCoE session offload process.
* Upon completion of offload process add
* rport to list of rports
*/
retry_ofld:
clear_bit(BNX2FC_FLAG_OFLD_REQ_CMPL, &tgt->flags);
rval = bnx2fc_send_session_ofld_req(port, tgt);
if (rval) {
printk(KERN_ERR PFX "ofld_req failed\n");
goto ofld_err;
}
/*
* wait for the session is offloaded and enabled. 3 Secs
* should be ample time for this process to complete.
*/
bnx2fc_ofld_wait(tgt);
if (!(test_bit(BNX2FC_FLAG_OFFLOADED, &tgt->flags))) {
if (test_and_clear_bit(BNX2FC_FLAG_CTX_ALLOC_FAILURE,
&tgt->flags)) {
BNX2FC_TGT_DBG(tgt, "ctx_alloc_failure, "
"retry ofld..%d\n", i++);
msleep_interruptible(1000);
if (i > 3) {
i = 0;
goto ofld_err;
}
goto retry_ofld;
}
goto ofld_err;
}
if (bnx2fc_map_doorbell(tgt)) {
printk(KERN_ERR PFX "map doorbell failed - no mem\n");
goto ofld_err;
}
clear_bit(BNX2FC_FLAG_OFLD_REQ_CMPL, &tgt->flags);
rval = bnx2fc_send_session_enable_req(port, tgt);
if (rval) {
pr_err(PFX "enable session failed\n");
goto ofld_err;
}
bnx2fc_ofld_wait(tgt);
if (!(test_bit(BNX2FC_FLAG_ENABLED, &tgt->flags)))
goto ofld_err;
return;
ofld_err:
/* couldn't offload the session. log off from this rport */
BNX2FC_TGT_DBG(tgt, "bnx2fc_offload_session - offload error\n");
clear_bit(BNX2FC_FLAG_OFFLOADED, &tgt->flags);
/* Free session resources */
bnx2fc_free_session_resc(hba, tgt);
tgt_init_err:
if (tgt->fcoe_conn_id != -1)
bnx2fc_free_conn_id(hba, tgt->fcoe_conn_id);
lport->tt.rport_logoff(rdata);
}
void bnx2fc_flush_active_ios(struct bnx2fc_rport *tgt)
{
struct bnx2fc_cmd *io_req;
struct bnx2fc_cmd *tmp;
int rc;
int i = 0;
BNX2FC_TGT_DBG(tgt, "Entered flush_active_ios - %d\n",
tgt->num_active_ios.counter);
spin_lock_bh(&tgt->tgt_lock);
tgt->flush_in_prog = 1;
list_for_each_entry_safe(io_req, tmp, &tgt->active_cmd_queue, link) {
i++;
list_del_init(&io_req->link);
io_req->on_active_queue = 0;
BNX2FC_IO_DBG(io_req, "cmd_queue cleanup\n");
if (cancel_delayed_work(&io_req->timeout_work)) {
if (test_and_clear_bit(BNX2FC_FLAG_EH_ABORT,
&io_req->req_flags)) {
/* Handle eh_abort timeout */
BNX2FC_IO_DBG(io_req, "eh_abort for IO "
"cleaned up\n");
complete(&io_req->tm_done);
}
kref_put(&io_req->refcount,
bnx2fc_cmd_release); /* drop timer hold */
}
set_bit(BNX2FC_FLAG_IO_COMPL, &io_req->req_flags);
set_bit(BNX2FC_FLAG_IO_CLEANUP, &io_req->req_flags);
/* Do not issue cleanup when disable request failed */
if (test_bit(BNX2FC_FLAG_DISABLE_FAILED, &tgt->flags))
bnx2fc_process_cleanup_compl(io_req, io_req->task, 0);
else {
rc = bnx2fc_initiate_cleanup(io_req);
BUG_ON(rc);
}
}
list_for_each_entry_safe(io_req, tmp, &tgt->active_tm_queue, link) {
i++;
list_del_init(&io_req->link);
io_req->on_tmf_queue = 0;
BNX2FC_IO_DBG(io_req, "tm_queue cleanup\n");
if (io_req->wait_for_comp)
complete(&io_req->tm_done);
}
list_for_each_entry_safe(io_req, tmp, &tgt->els_queue, link) {
i++;
list_del_init(&io_req->link);
io_req->on_active_queue = 0;
BNX2FC_IO_DBG(io_req, "els_queue cleanup\n");
if (cancel_delayed_work(&io_req->timeout_work))
kref_put(&io_req->refcount,
bnx2fc_cmd_release); /* drop timer hold */
if ((io_req->cb_func) && (io_req->cb_arg)) {
io_req->cb_func(io_req->cb_arg);
io_req->cb_arg = NULL;
}
/* Do not issue cleanup when disable request failed */
if (test_bit(BNX2FC_FLAG_DISABLE_FAILED, &tgt->flags))
bnx2fc_process_cleanup_compl(io_req, io_req->task, 0);
else {
rc = bnx2fc_initiate_cleanup(io_req);
BUG_ON(rc);
}
}
list_for_each_entry_safe(io_req, tmp, &tgt->io_retire_queue, link) {
i++;
list_del_init(&io_req->link);
BNX2FC_IO_DBG(io_req, "retire_queue flush\n");
if (cancel_delayed_work(&io_req->timeout_work)) {
if (test_and_clear_bit(BNX2FC_FLAG_EH_ABORT,
&io_req->req_flags)) {
/* Handle eh_abort timeout */
BNX2FC_IO_DBG(io_req, "eh_abort for IO "
"in retire_q\n");
if (io_req->wait_for_comp)
complete(&io_req->tm_done);
}
kref_put(&io_req->refcount, bnx2fc_cmd_release);
}
clear_bit(BNX2FC_FLAG_ISSUE_RRQ, &io_req->req_flags);
}
BNX2FC_TGT_DBG(tgt, "IOs flushed = %d\n", i);
i = 0;
spin_unlock_bh(&tgt->tgt_lock);
/* wait for active_ios to go to 0 */
while ((tgt->num_active_ios.counter != 0) && (i++ < BNX2FC_WAIT_CNT))
msleep(25);
if (tgt->num_active_ios.counter != 0)
printk(KERN_ERR PFX "CLEANUP on port 0x%x:"
" active_ios = %d\n",
tgt->rdata->ids.port_id, tgt->num_active_ios.counter);
spin_lock_bh(&tgt->tgt_lock);
tgt->flush_in_prog = 0;
spin_unlock_bh(&tgt->tgt_lock);
}
static void bnx2fc_upld_wait(struct bnx2fc_rport *tgt)
{
setup_timer(&tgt->upld_timer, bnx2fc_upld_timer, (unsigned long)tgt);
mod_timer(&tgt->upld_timer, jiffies + BNX2FC_FW_TIMEOUT);
wait_event_interruptible(tgt->upld_wait,
(test_bit(
BNX2FC_FLAG_UPLD_REQ_COMPL,
&tgt->flags)));
if (signal_pending(current))
flush_signals(current);
del_timer_sync(&tgt->upld_timer);
}
static void bnx2fc_upload_session(struct fcoe_port *port,
struct bnx2fc_rport *tgt)
{
struct bnx2fc_interface *interface = port->priv;
struct bnx2fc_hba *hba = interface->hba;
BNX2FC_TGT_DBG(tgt, "upload_session: active_ios = %d\n",
tgt->num_active_ios.counter);
/*
* Called with hba->hba_mutex held.
* This is a blocking call
*/
clear_bit(BNX2FC_FLAG_UPLD_REQ_COMPL, &tgt->flags);
bnx2fc_send_session_disable_req(port, tgt);
/*
* wait for upload to complete. 3 Secs
* should be sufficient time for this process to complete.
*/
BNX2FC_TGT_DBG(tgt, "waiting for disable compl\n");
bnx2fc_upld_wait(tgt);
/*
* traverse thru the active_q and tmf_q and cleanup
* IOs in these lists
*/
BNX2FC_TGT_DBG(tgt, "flush/upload - disable wait flags = 0x%lx\n",
tgt->flags);
bnx2fc_flush_active_ios(tgt);
/* Issue destroy KWQE */
if (test_bit(BNX2FC_FLAG_DISABLED, &tgt->flags)) {
BNX2FC_TGT_DBG(tgt, "send destroy req\n");
clear_bit(BNX2FC_FLAG_UPLD_REQ_COMPL, &tgt->flags);
bnx2fc_send_session_destroy_req(hba, tgt);
/* wait for destroy to complete */
bnx2fc_upld_wait(tgt);
if (!(test_bit(BNX2FC_FLAG_DESTROYED, &tgt->flags)))
printk(KERN_ERR PFX "ERROR!! destroy timed out\n");
BNX2FC_TGT_DBG(tgt, "destroy wait complete flags = 0x%lx\n",
tgt->flags);
} else if (test_bit(BNX2FC_FLAG_DISABLE_FAILED, &tgt->flags)) {
printk(KERN_ERR PFX "ERROR!! DISABLE req failed, destroy"
" not sent to FW\n");
} else {
printk(KERN_ERR PFX "ERROR!! DISABLE req timed out, destroy"
" not sent to FW\n");
}
/* Free session resources */
bnx2fc_free_session_resc(hba, tgt);
bnx2fc_free_conn_id(hba, tgt->fcoe_conn_id);
}
static int bnx2fc_init_tgt(struct bnx2fc_rport *tgt,
struct fcoe_port *port,
struct fc_rport_priv *rdata)
{
struct fc_rport *rport = rdata->rport;
struct bnx2fc_interface *interface = port->priv;
struct bnx2fc_hba *hba = interface->hba;
struct b577xx_doorbell_set_prod *sq_db = &tgt->sq_db;
struct b577xx_fcoe_rx_doorbell *rx_db = &tgt->rx_db;
tgt->rport = rport;
tgt->rdata = rdata;
tgt->port = port;
if (hba->num_ofld_sess >= BNX2FC_NUM_MAX_SESS) {
BNX2FC_TGT_DBG(tgt, "exceeded max sessions. logoff this tgt\n");
tgt->fcoe_conn_id = -1;
return -1;
}
tgt->fcoe_conn_id = bnx2fc_alloc_conn_id(hba, tgt);
if (tgt->fcoe_conn_id == -1)
return -1;
BNX2FC_TGT_DBG(tgt, "init_tgt - conn_id = 0x%x\n", tgt->fcoe_conn_id);
tgt->max_sqes = BNX2FC_SQ_WQES_MAX;
tgt->max_rqes = BNX2FC_RQ_WQES_MAX;
tgt->max_cqes = BNX2FC_CQ_WQES_MAX;
atomic_set(&tgt->free_sqes, BNX2FC_SQ_WQES_MAX);
/* Initialize the toggle bit */
tgt->sq_curr_toggle_bit = 1;
tgt->cq_curr_toggle_bit = 1;
tgt->sq_prod_idx = 0;
tgt->cq_cons_idx = 0;
tgt->rq_prod_idx = 0x8000;
tgt->rq_cons_idx = 0;
atomic_set(&tgt->num_active_ios, 0);
tgt->retry_delay_timestamp = 0;
if (rdata->flags & FC_RP_FLAGS_RETRY &&
rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET &&
!(rdata->ids.roles & FC_RPORT_ROLE_FCP_INITIATOR)) {
tgt->dev_type = TYPE_TAPE;
tgt->io_timeout = 0; /* use default ULP timeout */
} else {
tgt->dev_type = TYPE_DISK;
tgt->io_timeout = BNX2FC_IO_TIMEOUT;
}
/* initialize sq doorbell */
sq_db->header.header = B577XX_DOORBELL_HDR_DB_TYPE;
sq_db->header.header |= B577XX_FCOE_CONNECTION_TYPE <<
B577XX_DOORBELL_HDR_CONN_TYPE_SHIFT;
/* initialize rx doorbell */
rx_db->hdr.header = ((0x1 << B577XX_DOORBELL_HDR_RX_SHIFT) |
(0x1 << B577XX_DOORBELL_HDR_DB_TYPE_SHIFT) |
(B577XX_FCOE_CONNECTION_TYPE <<
B577XX_DOORBELL_HDR_CONN_TYPE_SHIFT));
rx_db->params = (0x2 << B577XX_FCOE_RX_DOORBELL_NEGATIVE_ARM_SHIFT) |
(0x3 << B577XX_FCOE_RX_DOORBELL_OPCODE_SHIFT);
spin_lock_init(&tgt->tgt_lock);
spin_lock_init(&tgt->cq_lock);
/* Initialize active_cmd_queue list */
INIT_LIST_HEAD(&tgt->active_cmd_queue);
/* Initialize IO retire queue */
INIT_LIST_HEAD(&tgt->io_retire_queue);
INIT_LIST_HEAD(&tgt->els_queue);
/* Initialize active_tm_queue list */
INIT_LIST_HEAD(&tgt->active_tm_queue);
init_waitqueue_head(&tgt->ofld_wait);
init_waitqueue_head(&tgt->upld_wait);
return 0;
}
/**
* This event_callback is called after successful completion of libfc
* initiated target login. bnx2fc can proceed with initiating the session
* establishment.
*/
void bnx2fc_rport_event_handler(struct fc_lport *lport,
struct fc_rport_priv *rdata,
enum fc_rport_event event)
{
struct fcoe_port *port = lport_priv(lport);
struct bnx2fc_interface *interface = port->priv;
struct bnx2fc_hba *hba = interface->hba;
struct fc_rport *rport = rdata->rport;
struct fc_rport_libfc_priv *rp;
struct bnx2fc_rport *tgt;
u32 port_id;
BNX2FC_HBA_DBG(lport, "rport_event_hdlr: event = %d, port_id = 0x%x\n",
event, rdata->ids.port_id);
switch (event) {
case RPORT_EV_READY:
if (!rport) {
printk(KERN_ERR PFX "rport is NULL: ERROR!\n");
break;
}
rp = rport->dd_data;
if (rport->port_id == FC_FID_DIR_SERV) {
/*
* bnx2fc_rport structure doesn't exist for
* directory server.
* We should not come here, as lport will
* take care of fabric login
*/
printk(KERN_ERR PFX "%x - rport_event_handler ERROR\n",
rdata->ids.port_id);
break;
}
if (rdata->spp_type != FC_TYPE_FCP) {
BNX2FC_HBA_DBG(lport, "not FCP type target."
" not offloading\n");
break;
}
if (!(rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET)) {
BNX2FC_HBA_DBG(lport, "not FCP_TARGET"
" not offloading\n");
break;
}
/*
* Offlaod process is protected with hba mutex.
* Use the same mutex_lock for upload process too
*/
mutex_lock(&hba->hba_mutex);
tgt = (struct bnx2fc_rport *)&rp[1];
/* This can happen when ADISC finds the same target */
if (test_bit(BNX2FC_FLAG_ENABLED, &tgt->flags)) {
BNX2FC_TGT_DBG(tgt, "already offloaded\n");
mutex_unlock(&hba->hba_mutex);
return;
}
/*
* Offload the session. This is a blocking call, and will
* wait until the session is offloaded.
*/
bnx2fc_offload_session(port, tgt, rdata);
BNX2FC_TGT_DBG(tgt, "OFFLOAD num_ofld_sess = %d\n",
hba->num_ofld_sess);
if (test_bit(BNX2FC_FLAG_ENABLED, &tgt->flags)) {
/* Session is offloaded and enabled. */
BNX2FC_TGT_DBG(tgt, "sess offloaded\n");
/* This counter is protected with hba mutex */
hba->num_ofld_sess++;
set_bit(BNX2FC_FLAG_SESSION_READY, &tgt->flags);
} else {
/*
* Offload or enable would have failed.
* In offload/enable completion path, the
* rport would have already been removed
*/
BNX2FC_TGT_DBG(tgt, "Port is being logged off as "
"offloaded flag not set\n");
}
mutex_unlock(&hba->hba_mutex);
break;
case RPORT_EV_LOGO:
case RPORT_EV_FAILED:
case RPORT_EV_STOP:
port_id = rdata->ids.port_id;
if (port_id == FC_FID_DIR_SERV)
break;
if (!rport) {
printk(KERN_INFO PFX "%x - rport not created Yet!!\n",
port_id);
break;
}
rp = rport->dd_data;
mutex_lock(&hba->hba_mutex);
/*
* Perform session upload. Note that rdata->peers is already
* removed from disc->rports list before we get this event.
*/
tgt = (struct bnx2fc_rport *)&rp[1];
if (!(test_bit(BNX2FC_FLAG_ENABLED, &tgt->flags))) {
mutex_unlock(&hba->hba_mutex);
break;
}
clear_bit(BNX2FC_FLAG_SESSION_READY, &tgt->flags);
bnx2fc_upload_session(port, tgt);
hba->num_ofld_sess--;
BNX2FC_TGT_DBG(tgt, "UPLOAD num_ofld_sess = %d\n",
hba->num_ofld_sess);
/*
* Try to wake up the linkdown wait thread. If num_ofld_sess
* is 0, the waiting therad wakes up
*/
if ((hba->wait_for_link_down) &&
(hba->num_ofld_sess == 0)) {
wake_up_interruptible(&hba->shutdown_wait);
}
mutex_unlock(&hba->hba_mutex);
break;
case RPORT_EV_NONE:
break;
}
}
/**
* bnx2fc_tgt_lookup() - Lookup a bnx2fc_rport by port_id
*
* @port: fcoe_port struct to lookup the target port on
* @port_id: The remote port ID to look up
*/
struct bnx2fc_rport *bnx2fc_tgt_lookup(struct fcoe_port *port,
u32 port_id)
{
struct bnx2fc_interface *interface = port->priv;
struct bnx2fc_hba *hba = interface->hba;
struct bnx2fc_rport *tgt;
struct fc_rport_priv *rdata;
int i;
for (i = 0; i < BNX2FC_NUM_MAX_SESS; i++) {
tgt = hba->tgt_ofld_list[i];
if ((tgt) && (tgt->port == port)) {
rdata = tgt->rdata;
if (rdata->ids.port_id == port_id) {
if (rdata->rp_state != RPORT_ST_DELETE) {
BNX2FC_TGT_DBG(tgt, "rport "
"obtained\n");
return tgt;
} else {
BNX2FC_TGT_DBG(tgt, "rport 0x%x "
"is in DELETED state\n",
rdata->ids.port_id);
return NULL;
}
}
}
}
return NULL;
}
/**
* bnx2fc_alloc_conn_id - allocates FCOE Connection id
*
* @hba: pointer to adapter structure
* @tgt: pointer to bnx2fc_rport structure
*/
static u32 bnx2fc_alloc_conn_id(struct bnx2fc_hba *hba,
struct bnx2fc_rport *tgt)
{
u32 conn_id, next;
/* called with hba mutex held */
/*
* tgt_ofld_list access is synchronized using
* both hba mutex and hba lock. Atleast hba mutex or
* hba lock needs to be held for read access.
*/
spin_lock_bh(&hba->hba_lock);
next = hba->next_conn_id;
conn_id = hba->next_conn_id++;
if (hba->next_conn_id == BNX2FC_NUM_MAX_SESS)
hba->next_conn_id = 0;
while (hba->tgt_ofld_list[conn_id] != NULL) {
conn_id++;
if (conn_id == BNX2FC_NUM_MAX_SESS)
conn_id = 0;
if (conn_id == next) {
/* No free conn_ids are available */
spin_unlock_bh(&hba->hba_lock);
return -1;
}
}
hba->tgt_ofld_list[conn_id] = tgt;
tgt->fcoe_conn_id = conn_id;
spin_unlock_bh(&hba->hba_lock);
return conn_id;
}
static void bnx2fc_free_conn_id(struct bnx2fc_hba *hba, u32 conn_id)
{
/* called with hba mutex held */
spin_lock_bh(&hba->hba_lock);
hba->tgt_ofld_list[conn_id] = NULL;
spin_unlock_bh(&hba->hba_lock);
}
/**
*bnx2fc_alloc_session_resc - Allocate qp resources for the session
*
*/
static int bnx2fc_alloc_session_resc(struct bnx2fc_hba *hba,
struct bnx2fc_rport *tgt)
{
dma_addr_t page;
int num_pages;
u32 *pbl;
/* Allocate and map SQ */
tgt->sq_mem_size = tgt->max_sqes * BNX2FC_SQ_WQE_SIZE;
tgt->sq_mem_size = (tgt->sq_mem_size + (CNIC_PAGE_SIZE - 1)) &
CNIC_PAGE_MASK;
tgt->sq = dma_alloc_coherent(&hba->pcidev->dev, tgt->sq_mem_size,
&tgt->sq_dma, GFP_KERNEL);
if (!tgt->sq) {
printk(KERN_ERR PFX "unable to allocate SQ memory %d\n",
tgt->sq_mem_size);
goto mem_alloc_failure;
}
memset(tgt->sq, 0, tgt->sq_mem_size);
/* Allocate and map CQ */
tgt->cq_mem_size = tgt->max_cqes * BNX2FC_CQ_WQE_SIZE;
tgt->cq_mem_size = (tgt->cq_mem_size + (CNIC_PAGE_SIZE - 1)) &
CNIC_PAGE_MASK;
tgt->cq = dma_alloc_coherent(&hba->pcidev->dev, tgt->cq_mem_size,
&tgt->cq_dma, GFP_KERNEL);
if (!tgt->cq) {
printk(KERN_ERR PFX "unable to allocate CQ memory %d\n",
tgt->cq_mem_size);
goto mem_alloc_failure;
}
memset(tgt->cq, 0, tgt->cq_mem_size);
/* Allocate and map RQ and RQ PBL */
tgt->rq_mem_size = tgt->max_rqes * BNX2FC_RQ_WQE_SIZE;
tgt->rq_mem_size = (tgt->rq_mem_size + (CNIC_PAGE_SIZE - 1)) &
CNIC_PAGE_MASK;
tgt->rq = dma_alloc_coherent(&hba->pcidev->dev, tgt->rq_mem_size,
&tgt->rq_dma, GFP_KERNEL);
if (!tgt->rq) {
printk(KERN_ERR PFX "unable to allocate RQ memory %d\n",
tgt->rq_mem_size);
goto mem_alloc_failure;
}
memset(tgt->rq, 0, tgt->rq_mem_size);
tgt->rq_pbl_size = (tgt->rq_mem_size / CNIC_PAGE_SIZE) * sizeof(void *);
tgt->rq_pbl_size = (tgt->rq_pbl_size + (CNIC_PAGE_SIZE - 1)) &
CNIC_PAGE_MASK;
tgt->rq_pbl = dma_alloc_coherent(&hba->pcidev->dev, tgt->rq_pbl_size,
&tgt->rq_pbl_dma, GFP_KERNEL);
if (!tgt->rq_pbl) {
printk(KERN_ERR PFX "unable to allocate RQ PBL %d\n",
tgt->rq_pbl_size);
goto mem_alloc_failure;
}
memset(tgt->rq_pbl, 0, tgt->rq_pbl_size);
num_pages = tgt->rq_mem_size / CNIC_PAGE_SIZE;
page = tgt->rq_dma;
pbl = (u32 *)tgt->rq_pbl;
while (num_pages--) {
*pbl = (u32)page;
pbl++;
*pbl = (u32)((u64)page >> 32);
pbl++;
page += CNIC_PAGE_SIZE;
}
/* Allocate and map XFERQ */
tgt->xferq_mem_size = tgt->max_sqes * BNX2FC_XFERQ_WQE_SIZE;
tgt->xferq_mem_size = (tgt->xferq_mem_size + (CNIC_PAGE_SIZE - 1)) &
CNIC_PAGE_MASK;
tgt->xferq = dma_alloc_coherent(&hba->pcidev->dev, tgt->xferq_mem_size,
&tgt->xferq_dma, GFP_KERNEL);
if (!tgt->xferq) {
printk(KERN_ERR PFX "unable to allocate XFERQ %d\n",
tgt->xferq_mem_size);
goto mem_alloc_failure;
}
memset(tgt->xferq, 0, tgt->xferq_mem_size);
/* Allocate and map CONFQ & CONFQ PBL */
tgt->confq_mem_size = tgt->max_sqes * BNX2FC_CONFQ_WQE_SIZE;
tgt->confq_mem_size = (tgt->confq_mem_size + (CNIC_PAGE_SIZE - 1)) &
CNIC_PAGE_MASK;
tgt->confq = dma_alloc_coherent(&hba->pcidev->dev, tgt->confq_mem_size,
&tgt->confq_dma, GFP_KERNEL);
if (!tgt->confq) {
printk(KERN_ERR PFX "unable to allocate CONFQ %d\n",
tgt->confq_mem_size);
goto mem_alloc_failure;
}
memset(tgt->confq, 0, tgt->confq_mem_size);
tgt->confq_pbl_size =
(tgt->confq_mem_size / CNIC_PAGE_SIZE) * sizeof(void *);
tgt->confq_pbl_size =
(tgt->confq_pbl_size + (CNIC_PAGE_SIZE - 1)) & CNIC_PAGE_MASK;
tgt->confq_pbl = dma_alloc_coherent(&hba->pcidev->dev,
tgt->confq_pbl_size,
&tgt->confq_pbl_dma, GFP_KERNEL);
if (!tgt->confq_pbl) {
printk(KERN_ERR PFX "unable to allocate CONFQ PBL %d\n",
tgt->confq_pbl_size);
goto mem_alloc_failure;
}
memset(tgt->confq_pbl, 0, tgt->confq_pbl_size);
num_pages = tgt->confq_mem_size / CNIC_PAGE_SIZE;
page = tgt->confq_dma;
pbl = (u32 *)tgt->confq_pbl;
while (num_pages--) {
*pbl = (u32)page;
pbl++;
*pbl = (u32)((u64)page >> 32);
pbl++;
page += CNIC_PAGE_SIZE;
}
/* Allocate and map ConnDB */
tgt->conn_db_mem_size = sizeof(struct fcoe_conn_db);
tgt->conn_db = dma_alloc_coherent(&hba->pcidev->dev,
tgt->conn_db_mem_size,
&tgt->conn_db_dma, GFP_KERNEL);
if (!tgt->conn_db) {
printk(KERN_ERR PFX "unable to allocate conn_db %d\n",
tgt->conn_db_mem_size);
goto mem_alloc_failure;
}
memset(tgt->conn_db, 0, tgt->conn_db_mem_size);
/* Allocate and map LCQ */
tgt->lcq_mem_size = (tgt->max_sqes + 8) * BNX2FC_SQ_WQE_SIZE;
tgt->lcq_mem_size = (tgt->lcq_mem_size + (CNIC_PAGE_SIZE - 1)) &
CNIC_PAGE_MASK;
tgt->lcq = dma_alloc_coherent(&hba->pcidev->dev, tgt->lcq_mem_size,
&tgt->lcq_dma, GFP_KERNEL);
if (!tgt->lcq) {
printk(KERN_ERR PFX "unable to allocate lcq %d\n",
tgt->lcq_mem_size);
goto mem_alloc_failure;
}
memset(tgt->lcq, 0, tgt->lcq_mem_size);
tgt->conn_db->rq_prod = 0x8000;
return 0;
mem_alloc_failure:
return -ENOMEM;
}
/**
* bnx2i_free_session_resc - free qp resources for the session
*
* @hba: adapter structure pointer
* @tgt: bnx2fc_rport structure pointer
*
* Free QP resources - SQ/RQ/CQ/XFERQ memory and PBL
*/
static void bnx2fc_free_session_resc(struct bnx2fc_hba *hba,
struct bnx2fc_rport *tgt)
{
void __iomem *ctx_base_ptr;
BNX2FC_TGT_DBG(tgt, "Freeing up session resources\n");
spin_lock_bh(&tgt->cq_lock);
ctx_base_ptr = tgt->ctx_base;
tgt->ctx_base = NULL;
/* Free LCQ */
if (tgt->lcq) {
dma_free_coherent(&hba->pcidev->dev, tgt->lcq_mem_size,
tgt->lcq, tgt->lcq_dma);
tgt->lcq = NULL;
}
/* Free connDB */
if (tgt->conn_db) {
dma_free_coherent(&hba->pcidev->dev, tgt->conn_db_mem_size,
tgt->conn_db, tgt->conn_db_dma);
tgt->conn_db = NULL;
}
/* Free confq and confq pbl */
if (tgt->confq_pbl) {
dma_free_coherent(&hba->pcidev->dev, tgt->confq_pbl_size,
tgt->confq_pbl, tgt->confq_pbl_dma);
tgt->confq_pbl = NULL;
}
if (tgt->confq) {
dma_free_coherent(&hba->pcidev->dev, tgt->confq_mem_size,
tgt->confq, tgt->confq_dma);
tgt->confq = NULL;
}
/* Free XFERQ */
if (tgt->xferq) {
dma_free_coherent(&hba->pcidev->dev, tgt->xferq_mem_size,
tgt->xferq, tgt->xferq_dma);
tgt->xferq = NULL;
}
/* Free RQ PBL and RQ */
if (tgt->rq_pbl) {
dma_free_coherent(&hba->pcidev->dev, tgt->rq_pbl_size,
tgt->rq_pbl, tgt->rq_pbl_dma);
tgt->rq_pbl = NULL;
}
if (tgt->rq) {
dma_free_coherent(&hba->pcidev->dev, tgt->rq_mem_size,
tgt->rq, tgt->rq_dma);
tgt->rq = NULL;
}
/* Free CQ */
if (tgt->cq) {
dma_free_coherent(&hba->pcidev->dev, tgt->cq_mem_size,
tgt->cq, tgt->cq_dma);
tgt->cq = NULL;
}
/* Free SQ */
if (tgt->sq) {
dma_free_coherent(&hba->pcidev->dev, tgt->sq_mem_size,
tgt->sq, tgt->sq_dma);
tgt->sq = NULL;
}
spin_unlock_bh(&tgt->cq_lock);
if (ctx_base_ptr)
iounmap(ctx_base_ptr);
}
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