/* QLogic qed NIC Driver
* Copyright (c) 2015-2017 QLogic Corporation
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed 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, or the
* OpenIB.org BSD license below:
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and /or other materials
* provided with the distribution.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include <linux/types.h>
#include <asm/byteorder.h>
#include <asm/param.h>
#include <linux/delay.h>
#include <linux/dma-mapping.h>
#include <linux/interrupt.h>
#include <linux/kernel.h>
#include <linux/log2.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/slab.h>
#include <linux/stddef.h>
#include <linux/string.h>
#include <linux/workqueue.h>
#include <linux/errno.h>
#include <linux/list.h>
#include <linux/spinlock.h>
#define __PREVENT_DUMP_MEM_ARR__
#define __PREVENT_PXP_GLOBAL_WIN__
#include "qed.h"
#include "qed_cxt.h"
#include "qed_dev_api.h"
#include "qed_fcoe.h"
#include "qed_hsi.h"
#include "qed_hw.h"
#include "qed_int.h"
#include "qed_ll2.h"
#include "qed_mcp.h"
#include "qed_reg_addr.h"
#include "qed_sp.h"
#include "qed_sriov.h"
#include <linux/qed/qed_fcoe_if.h>
struct qed_fcoe_conn {
struct list_head list_entry;
bool free_on_delete;
u16 conn_id;
u32 icid;
u32 fw_cid;
u8 layer_code;
dma_addr_t sq_pbl_addr;
dma_addr_t sq_curr_page_addr;
dma_addr_t sq_next_page_addr;
dma_addr_t xferq_pbl_addr;
void *xferq_pbl_addr_virt_addr;
dma_addr_t xferq_addr[4];
void *xferq_addr_virt_addr[4];
dma_addr_t confq_pbl_addr;
void *confq_pbl_addr_virt_addr;
dma_addr_t confq_addr[2];
void *confq_addr_virt_addr[2];
dma_addr_t terminate_params;
u16 dst_mac_addr_lo;
u16 dst_mac_addr_mid;
u16 dst_mac_addr_hi;
u16 src_mac_addr_lo;
u16 src_mac_addr_mid;
u16 src_mac_addr_hi;
u16 tx_max_fc_pay_len;
u16 e_d_tov_timer_val;
u16 rec_tov_timer_val;
u16 rx_max_fc_pay_len;
u16 vlan_tag;
u16 physical_q0;
struct fc_addr_nw s_id;
u8 max_conc_seqs_c3;
struct fc_addr_nw d_id;
u8 flags;
u8 def_q_idx;
};
static int
qed_sp_fcoe_func_start(struct qed_hwfn *p_hwfn,
enum spq_mode comp_mode,
struct qed_spq_comp_cb *p_comp_addr)
{
struct qed_fcoe_pf_params *fcoe_pf_params = NULL;
struct fcoe_init_ramrod_params *p_ramrod = NULL;
struct fcoe_init_func_ramrod_data *p_data;
struct e4_fcoe_conn_context *p_cxt = NULL;
struct qed_spq_entry *p_ent = NULL;
struct qed_sp_init_data init_data;
struct qed_cxt_info cxt_info;
u32 dummy_cid;
int rc = 0;
u16 tmp;
u8 i;
/* Get SPQ entry */
memset(&init_data, 0, sizeof(init_data));
init_data.cid = qed_spq_get_cid(p_hwfn);
init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
init_data.comp_mode = comp_mode;
init_data.p_comp_data = p_comp_addr;
rc = qed_sp_init_request(p_hwfn, &p_ent,
FCOE_RAMROD_CMD_ID_INIT_FUNC,
PROTOCOLID_FCOE, &init_data);
if (rc)
return rc;
p_ramrod = &p_ent->ramrod.fcoe_init;
p_data = &p_ramrod->init_ramrod_data;
fcoe_pf_params = &p_hwfn->pf_params.fcoe_pf_params;
/* Sanity */
if (fcoe_pf_params->num_cqs > p_hwfn->hw_info.feat_num[QED_FCOE_CQ]) {
DP_ERR(p_hwfn,
"Cannot satisfy CQ amount. CQs requested %d, CQs available %d. Aborting function start\n",
fcoe_pf_params->num_cqs,
p_hwfn->hw_info.feat_num[QED_FCOE_CQ]);
rc = -EINVAL;
goto err;
}
p_data->mtu = cpu_to_le16(fcoe_pf_params->mtu);
tmp = cpu_to_le16(fcoe_pf_params->sq_num_pbl_pages);
p_data->sq_num_pages_in_pbl = tmp;
rc = qed_cxt_acquire_cid(p_hwfn, PROTOCOLID_FCOE, &dummy_cid);
if (rc)
goto err;
cxt_info.iid = dummy_cid;
rc = qed_cxt_get_cid_info(p_hwfn, &cxt_info);
if (rc) {
DP_NOTICE(p_hwfn, "Cannot find context info for dummy cid=%d\n",
dummy_cid);
goto err;
}
p_cxt = cxt_info.p_cxt;
SET_FIELD(p_cxt->tstorm_ag_context.flags3,
E4_TSTORM_FCOE_CONN_AG_CTX_DUMMY_TIMER_CF_EN, 1);
fcoe_pf_params->dummy_icid = (u16)dummy_cid;
tmp = cpu_to_le16(fcoe_pf_params->num_tasks);
p_data->func_params.num_tasks = tmp;
p_data->func_params.log_page_size = fcoe_pf_params->log_page_size;
p_data->func_params.debug_mode = fcoe_pf_params->debug_mode;
DMA_REGPAIR_LE(p_data->q_params.glbl_q_params_addr,
fcoe_pf_params->glbl_q_params_addr);
tmp = cpu_to_le16(fcoe_pf_params->cq_num_entries);
p_data->q_params.cq_num_entries = tmp;
tmp = cpu_to_le16(fcoe_pf_params->cmdq_num_entries);
p_data->q_params.cmdq_num_entries = tmp;
tmp = fcoe_pf_params->num_cqs;
p_data->q_params.num_queues = (u8)tmp;
tmp = (u16)p_hwfn->hw_info.resc_start[QED_CMDQS_CQS];
p_data->q_params.queue_relative_offset = (u8)tmp;
for (i = 0; i < fcoe_pf_params->num_cqs; i++) {
u16 igu_sb_id;
igu_sb_id = qed_get_igu_sb_id(p_hwfn, i);
tmp = cpu_to_le16(igu_sb_id);
p_data->q_params.cq_cmdq_sb_num_arr[i] = tmp;
}
p_data->q_params.cq_sb_pi = fcoe_pf_params->gl_rq_pi;
p_data->q_params.cmdq_sb_pi = fcoe_pf_params->gl_cmd_pi;
p_data->q_params.bdq_resource_id = (u8)RESC_START(p_hwfn, QED_BDQ);
DMA_REGPAIR_LE(p_data->q_params.bdq_pbl_base_address[BDQ_ID_RQ],
fcoe_pf_params->bdq_pbl_base_addr[BDQ_ID_RQ]);
p_data->q_params.bdq_pbl_num_entries[BDQ_ID_RQ] =
fcoe_pf_params->bdq_pbl_num_entries[BDQ_ID_RQ];
tmp = fcoe_pf_params->bdq_xoff_threshold[BDQ_ID_RQ];
p_data->q_params.bdq_xoff_threshold[BDQ_ID_RQ] = cpu_to_le16(tmp);
tmp = fcoe_pf_params->bdq_xon_threshold[BDQ_ID_RQ];
p_data->q_params.bdq_xon_threshold[BDQ_ID_RQ] = cpu_to_le16(tmp);
DMA_REGPAIR_LE(p_data->q_params.bdq_pbl_base_address[BDQ_ID_IMM_DATA],
fcoe_pf_params->bdq_pbl_base_addr[BDQ_ID_IMM_DATA]);
p_data->q_params.bdq_pbl_num_entries[BDQ_ID_IMM_DATA] =
fcoe_pf_params->bdq_pbl_num_entries[BDQ_ID_IMM_DATA];
tmp = fcoe_pf_params->bdq_xoff_threshold[BDQ_ID_IMM_DATA];
p_data->q_params.bdq_xoff_threshold[BDQ_ID_IMM_DATA] = cpu_to_le16(tmp);
tmp = fcoe_pf_params->bdq_xon_threshold[BDQ_ID_IMM_DATA];
p_data->q_params.bdq_xon_threshold[BDQ_ID_IMM_DATA] = cpu_to_le16(tmp);
tmp = fcoe_pf_params->rq_buffer_size;
p_data->q_params.rq_buffer_size = cpu_to_le16(tmp);
if (fcoe_pf_params->is_target) {
SET_FIELD(p_data->q_params.q_validity,
SCSI_INIT_FUNC_QUEUES_RQ_VALID, 1);
if (p_data->q_params.bdq_pbl_num_entries[BDQ_ID_IMM_DATA])
SET_FIELD(p_data->q_params.q_validity,
SCSI_INIT_FUNC_QUEUES_IMM_DATA_VALID, 1);
SET_FIELD(p_data->q_params.q_validity,
SCSI_INIT_FUNC_QUEUES_CMD_VALID, 1);
} else {
SET_FIELD(p_data->q_params.q_validity,
SCSI_INIT_FUNC_QUEUES_RQ_VALID, 1);
}
rc = qed_spq_post(p_hwfn, p_ent, NULL);
return rc;
err:
qed_sp_destroy_request(p_hwfn, p_ent);
return rc;
}
static int
qed_sp_fcoe_conn_offload(struct qed_hwfn *p_hwfn,
struct qed_fcoe_conn *p_conn,
enum spq_mode comp_mode,
struct qed_spq_comp_cb *p_comp_addr)
{
struct fcoe_conn_offload_ramrod_params *p_ramrod = NULL;
struct fcoe_conn_offload_ramrod_data *p_data;
struct qed_spq_entry *p_ent = NULL;
struct qed_sp_init_data init_data;
u16 physical_q0, tmp;
int rc;
/* Get SPQ entry */
memset(&init_data, 0, sizeof(init_data));
init_data.cid = p_conn->icid;
init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
init_data.comp_mode = comp_mode;
init_data.p_comp_data = p_comp_addr;
rc = qed_sp_init_request(p_hwfn, &p_ent,
FCOE_RAMROD_CMD_ID_OFFLOAD_CONN,
PROTOCOLID_FCOE, &init_data);
if (rc)
return rc;
p_ramrod = &p_ent->ramrod.fcoe_conn_ofld;
p_data = &p_ramrod->offload_ramrod_data;
/* Transmission PQ is the first of the PF */
physical_q0 = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OFLD);
p_conn->physical_q0 = cpu_to_le16(physical_q0);
p_data->physical_q0 = cpu_to_le16(physical_q0);
p_data->conn_id = cpu_to_le16(p_conn->conn_id);
DMA_REGPAIR_LE(p_data->sq_pbl_addr, p_conn->sq_pbl_addr);
DMA_REGPAIR_LE(p_data->sq_curr_page_addr, p_conn->sq_curr_page_addr);
DMA_REGPAIR_LE(p_data->sq_next_page_addr, p_conn->sq_next_page_addr);
DMA_REGPAIR_LE(p_data->xferq_pbl_addr, p_conn->xferq_pbl_addr);
DMA_REGPAIR_LE(p_data->xferq_curr_page_addr, p_conn->xferq_addr[0]);
DMA_REGPAIR_LE(p_data->xferq_next_page_addr, p_conn->xferq_addr[1]);
DMA_REGPAIR_LE(p_data->respq_pbl_addr, p_conn->confq_pbl_addr);
DMA_REGPAIR_LE(p_data->respq_curr_page_addr, p_conn->confq_addr[0]);
DMA_REGPAIR_LE(p_data->respq_next_page_addr, p_conn->confq_addr[1]);
p_data->dst_mac_addr_lo = cpu_to_le16(p_conn->dst_mac_addr_lo);
p_data->dst_mac_addr_mid = cpu_to_le16(p_conn->dst_mac_addr_mid);
p_data->dst_mac_addr_hi = cpu_to_le16(p_conn->dst_mac_addr_hi);
p_data->src_mac_addr_lo = cpu_to_le16(p_conn->src_mac_addr_lo);
p_data->src_mac_addr_mid = cpu_to_le16(p_conn->src_mac_addr_mid);
p_data->src_mac_addr_hi = cpu_to_le16(p_conn->src_mac_addr_hi);
tmp = cpu_to_le16(p_conn->tx_max_fc_pay_len);
p_data->tx_max_fc_pay_len = tmp;
tmp = cpu_to_le16(p_conn->e_d_tov_timer_val);
p_data->e_d_tov_timer_val = tmp;
tmp = cpu_to_le16(p_conn->rec_tov_timer_val);
p_data->rec_rr_tov_timer_val = tmp;
tmp = cpu_to_le16(p_conn->rx_max_fc_pay_len);
p_data->rx_max_fc_pay_len = tmp;
p_data->vlan_tag = cpu_to_le16(p_conn->vlan_tag);
p_data->s_id.addr_hi = p_conn->s_id.addr_hi;
p_data->s_id.addr_mid = p_conn->s_id.addr_mid;
p_data->s_id.addr_lo = p_conn->s_id.addr_lo;
p_data->max_conc_seqs_c3 = p_conn->max_conc_seqs_c3;
p_data->d_id.addr_hi = p_conn->d_id.addr_hi;
p_data->d_id.addr_mid = p_conn->d_id.addr_mid;
p_data->d_id.addr_lo = p_conn->d_id.addr_lo;
p_data->flags = p_conn->flags;
if (test_bit(QED_MF_UFP_SPECIFIC, &p_hwfn->cdev->mf_bits))
SET_FIELD(p_data->flags,
FCOE_CONN_OFFLOAD_RAMROD_DATA_B_SINGLE_VLAN, 1);
p_data->def_q_idx = p_conn->def_q_idx;
return qed_spq_post(p_hwfn, p_ent, NULL);
}
static int
qed_sp_fcoe_conn_destroy(struct qed_hwfn *p_hwfn,
struct qed_fcoe_conn *p_conn,
enum spq_mode comp_mode,
struct qed_spq_comp_cb *p_comp_addr)
{
struct fcoe_conn_terminate_ramrod_params *p_ramrod = NULL;
struct qed_spq_entry *p_ent = NULL;
struct qed_sp_init_data init_data;
int rc = 0;
/* Get SPQ entry */
memset(&init_data, 0, sizeof(init_data));
init_data.cid = p_conn->icid;
init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
init_data.comp_mode = comp_mode;
init_data.p_comp_data = p_comp_addr;
rc = qed_sp_init_request(p_hwfn, &p_ent,
FCOE_RAMROD_CMD_ID_TERMINATE_CONN,
PROTOCOLID_FCOE, &init_data);
if (rc)
return rc;
p_ramrod = &p_ent->ramrod.fcoe_conn_terminate;
DMA_REGPAIR_LE(p_ramrod->terminate_ramrod_data.terminate_params_addr,
p_conn->terminate_params);
return qed_spq_post(p_hwfn, p_ent, NULL);
}
static int
qed_sp_fcoe_func_stop(struct qed_hwfn *p_hwfn,
struct qed_ptt *p_ptt,
enum spq_mode comp_mode,
struct qed_spq_comp_cb *p_comp_addr)
{
struct qed_spq_entry *p_ent = NULL;
struct qed_sp_init_data init_data;
u32 active_segs = 0;
int rc = 0;
/* Get SPQ entry */
memset(&init_data, 0, sizeof(init_data));
init_data.cid = p_hwfn->pf_params.fcoe_pf_params.dummy_icid;
init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
init_data.comp_mode = comp_mode;
init_data.p_comp_data = p_comp_addr;
rc = qed_sp_init_request(p_hwfn, &p_ent,
FCOE_RAMROD_CMD_ID_DESTROY_FUNC,
PROTOCOLID_FCOE, &init_data);
if (rc)
return rc;
active_segs = qed_rd(p_hwfn, p_ptt, TM_REG_PF_ENABLE_TASK);
active_segs &= ~BIT(QED_CXT_FCOE_TID_SEG);
qed_wr(p_hwfn, p_ptt, TM_REG_PF_ENABLE_TASK, active_segs);
return qed_spq_post(p_hwfn, p_ent, NULL);
}
static int
qed_fcoe_allocate_connection(struct qed_hwfn *p_hwfn,
struct qed_fcoe_conn **p_out_conn)
{
struct qed_fcoe_conn *p_conn = NULL;
void *p_addr;
u32 i;
spin_lock_bh(&p_hwfn->p_fcoe_info->lock);
if (!list_empty(&p_hwfn->p_fcoe_info->free_list))
p_conn =
list_first_entry(&p_hwfn->p_fcoe_info->free_list,
struct qed_fcoe_conn, list_entry);
if (p_conn) {
list_del(&p_conn->list_entry);
spin_unlock_bh(&p_hwfn->p_fcoe_info->lock);
*p_out_conn = p_conn;
return 0;
}
spin_unlock_bh(&p_hwfn->p_fcoe_info->lock);
p_conn = kzalloc(sizeof(*p_conn), GFP_KERNEL);
if (!p_conn)
return -ENOMEM;
p_addr = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
QED_CHAIN_PAGE_SIZE,
&p_conn->xferq_pbl_addr, GFP_KERNEL);
if (!p_addr)
goto nomem_pbl_xferq;
p_conn->xferq_pbl_addr_virt_addr = p_addr;
for (i = 0; i < ARRAY_SIZE(p_conn->xferq_addr); i++) {
p_addr = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
QED_CHAIN_PAGE_SIZE,
&p_conn->xferq_addr[i], GFP_KERNEL);
if (!p_addr)
goto nomem_xferq;
p_conn->xferq_addr_virt_addr[i] = p_addr;
p_addr = p_conn->xferq_pbl_addr_virt_addr;
((dma_addr_t *)p_addr)[i] = p_conn->xferq_addr[i];
}
p_addr = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
QED_CHAIN_PAGE_SIZE,
&p_conn->confq_pbl_addr, GFP_KERNEL);
if (!p_addr)
goto nomem_xferq;
p_conn->confq_pbl_addr_virt_addr = p_addr;
for (i = 0; i < ARRAY_SIZE(p_conn->confq_addr); i++) {
p_addr = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
QED_CHAIN_PAGE_SIZE,
&p_conn->confq_addr[i], GFP_KERNEL);
if (!p_addr)
goto nomem_confq;
p_conn->confq_addr_virt_addr[i] = p_addr;
p_addr = p_conn->confq_pbl_addr_virt_addr;
((dma_addr_t *)p_addr)[i] = p_conn->confq_addr[i];
}
p_conn->free_on_delete = true;
*p_out_conn = p_conn;
return 0;
nomem_confq:
dma_free_coherent(&p_hwfn->cdev->pdev->dev,
QED_CHAIN_PAGE_SIZE,
p_conn->confq_pbl_addr_virt_addr,
p_conn->confq_pbl_addr);
for (i = 0; i < ARRAY_SIZE(p_conn->confq_addr); i++)
if (p_conn->confq_addr_virt_addr[i])
dma_free_coherent(&p_hwfn->cdev->pdev->dev,
QED_CHAIN_PAGE_SIZE,
p_conn->confq_addr_virt_addr[i],
p_conn->confq_addr[i]);
nomem_xferq:
dma_free_coherent(&p_hwfn->cdev->pdev->dev,
QED_CHAIN_PAGE_SIZE,
p_conn->xferq_pbl_addr_virt_addr,
p_conn->xferq_pbl_addr);
for (i = 0; i < ARRAY_SIZE(p_conn->xferq_addr); i++)
if (p_conn->xferq_addr_virt_addr[i])
dma_free_coherent(&p_hwfn->cdev->pdev->dev,
QED_CHAIN_PAGE_SIZE,
p_conn->xferq_addr_virt_addr[i],
p_conn->xferq_addr[i]);
nomem_pbl_xferq:
kfree(p_conn);
return -ENOMEM;
}
static void qed_fcoe_free_connection(struct qed_hwfn *p_hwfn,
struct qed_fcoe_conn *p_conn)
{
u32 i;
if (!p_conn)
return;
if (p_conn->confq_pbl_addr_virt_addr)
dma_free_coherent(&p_hwfn->cdev->pdev->dev,
QED_CHAIN_PAGE_SIZE,
p_conn->confq_pbl_addr_virt_addr,
p_conn->confq_pbl_addr);
for (i = 0; i < ARRAY_SIZE(p_conn->confq_addr); i++) {
if (!p_conn->confq_addr_virt_addr[i])
continue;
dma_free_coherent(&p_hwfn->cdev->pdev->dev,
QED_CHAIN_PAGE_SIZE,
p_conn->confq_addr_virt_addr[i],
p_conn->confq_addr[i]);
}
if (p_conn->xferq_pbl_addr_virt_addr)
dma_free_coherent(&p_hwfn->cdev->pdev->dev,
QED_CHAIN_PAGE_SIZE,
p_conn->xferq_pbl_addr_virt_addr,
p_conn->xferq_pbl_addr);
for (i = 0; i < ARRAY_SIZE(p_conn->xferq_addr); i++) {
if (!p_conn->xferq_addr_virt_addr[i])
continue;
dma_free_coherent(&p_hwfn->cdev->pdev->dev,
QED_CHAIN_PAGE_SIZE,
p_conn->xferq_addr_virt_addr[i],
p_conn->xferq_addr[i]);
}
kfree(p_conn);
}
static void __iomem *qed_fcoe_get_db_addr(struct qed_hwfn *p_hwfn, u32 cid)
{
return (u8 __iomem *)p_hwfn->doorbells +
qed_db_addr(cid, DQ_DEMS_LEGACY);
}
static void __iomem *qed_fcoe_get_primary_bdq_prod(struct qed_hwfn *p_hwfn,
u8 bdq_id)
{
if (RESC_NUM(p_hwfn, QED_BDQ)) {
return (u8 __iomem *)p_hwfn->regview +
GTT_BAR0_MAP_REG_MSDM_RAM +
MSTORM_SCSI_BDQ_EXT_PROD_OFFSET(RESC_START(p_hwfn,
QED_BDQ),
bdq_id);
} else {
DP_NOTICE(p_hwfn, "BDQ is not allocated!\n");
return NULL;
}
}
static void __iomem *qed_fcoe_get_secondary_bdq_prod(struct qed_hwfn *p_hwfn,
u8 bdq_id)
{
if (RESC_NUM(p_hwfn, QED_BDQ)) {
return (u8 __iomem *)p_hwfn->regview +
GTT_BAR0_MAP_REG_TSDM_RAM +
TSTORM_SCSI_BDQ_EXT_PROD_OFFSET(RESC_START(p_hwfn,
QED_BDQ),
bdq_id);
} else {
DP_NOTICE(p_hwfn, "BDQ is not allocated!\n");
return NULL;
}
}
int qed_fcoe_alloc(struct qed_hwfn *p_hwfn)
{
struct qed_fcoe_info *p_fcoe_info;
/* Allocate LL2's set struct */
p_fcoe_info = kzalloc(sizeof(*p_fcoe_info), GFP_KERNEL);
if (!p_fcoe_info) {
DP_NOTICE(p_hwfn, "Failed to allocate qed_fcoe_info'\n");
return -ENOMEM;
}
INIT_LIST_HEAD(&p_fcoe_info->free_list);
p_hwfn->p_fcoe_info = p_fcoe_info;
return 0;
}
void qed_fcoe_setup(struct qed_hwfn *p_hwfn)
{
struct e4_fcoe_task_context *p_task_ctx = NULL;
int rc;
u32 i;
spin_lock_init(&p_hwfn->p_fcoe_info->lock);
for (i = 0; i < p_hwfn->pf_params.fcoe_pf_params.num_tasks; i++) {
rc = qed_cxt_get_task_ctx(p_hwfn, i,
QED_CTX_WORKING_MEM,
(void **)&p_task_ctx);
if (rc)
continue;
memset(p_task_ctx, 0, sizeof(struct e4_fcoe_task_context));
SET_FIELD(p_task_ctx->timer_context.logical_client_0,
TIMERS_CONTEXT_VALIDLC0, 1);
SET_FIELD(p_task_ctx->timer_context.logical_client_1,
TIMERS_CONTEXT_VALIDLC1, 1);
SET_FIELD(p_task_ctx->tstorm_ag_context.flags0,
E4_TSTORM_FCOE_TASK_AG_CTX_CONNECTION_TYPE, 1);
}
}
void qed_fcoe_free(struct qed_hwfn *p_hwfn)
{
struct qed_fcoe_conn *p_conn = NULL;
if (!p_hwfn->p_fcoe_info)
return;
while (!list_empty(&p_hwfn->p_fcoe_info->free_list)) {
p_conn = list_first_entry(&p_hwfn->p_fcoe_info->free_list,
struct qed_fcoe_conn, list_entry);
if (!p_conn)
break;
list_del(&p_conn->list_entry);
qed_fcoe_free_connection(p_hwfn, p_conn);
}
kfree(p_hwfn->p_fcoe_info);
p_hwfn->p_fcoe_info = NULL;
}
static int
qed_fcoe_acquire_connection(struct qed_hwfn *p_hwfn,
struct qed_fcoe_conn *p_in_conn,
struct qed_fcoe_conn **p_out_conn)
{
struct qed_fcoe_conn *p_conn = NULL;
int rc = 0;
u32 icid;
spin_lock_bh(&p_hwfn->p_fcoe_info->lock);
rc = qed_cxt_acquire_cid(p_hwfn, PROTOCOLID_FCOE, &icid);
spin_unlock_bh(&p_hwfn->p_fcoe_info->lock);
if (rc)
return rc;
/* Use input connection [if provided] or allocate a new one */
if (p_in_conn) {
p_conn = p_in_conn;
} else {
rc = qed_fcoe_allocate_connection(p_hwfn, &p_conn);
if (rc) {
spin_lock_bh(&p_hwfn->p_fcoe_info->lock);
qed_cxt_release_cid(p_hwfn, icid);
spin_unlock_bh(&p_hwfn->p_fcoe_info->lock);
return rc;
}
}
p_conn->icid = icid;
p_conn->fw_cid = (p_hwfn->hw_info.opaque_fid << 16) | icid;
*p_out_conn = p_conn;
return rc;
}
static void qed_fcoe_release_connection(struct qed_hwfn *p_hwfn,
struct qed_fcoe_conn *p_conn)
{
spin_lock_bh(&p_hwfn->p_fcoe_info->lock);
list_add_tail(&p_conn->list_entry, &p_hwfn->p_fcoe_info->free_list);
qed_cxt_release_cid(p_hwfn, p_conn->icid);
spin_unlock_bh(&p_hwfn->p_fcoe_info->lock);
}
static void _qed_fcoe_get_tstats(struct qed_hwfn *p_hwfn,
struct qed_ptt *p_ptt,
struct qed_fcoe_stats *p_stats)
{
struct fcoe_rx_stat tstats;
u32 tstats_addr;
memset(&tstats, 0, sizeof(tstats));
tstats_addr = BAR0_MAP_REG_TSDM_RAM +
TSTORM_FCOE_RX_STATS_OFFSET(p_hwfn->rel_pf_id);
qed_memcpy_from(p_hwfn, p_ptt, &tstats, tstats_addr, sizeof(tstats));
p_stats->fcoe_rx_byte_cnt = HILO_64_REGPAIR(tstats.fcoe_rx_byte_cnt);
p_stats->fcoe_rx_data_pkt_cnt =
HILO_64_REGPAIR(tstats.fcoe_rx_data_pkt_cnt);
p_stats->fcoe_rx_xfer_pkt_cnt =
HILO_64_REGPAIR(tstats.fcoe_rx_xfer_pkt_cnt);
p_stats->fcoe_rx_other_pkt_cnt =
HILO_64_REGPAIR(tstats.fcoe_rx_other_pkt_cnt);
p_stats->fcoe_silent_drop_pkt_cmdq_full_cnt =
le32_to_cpu(tstats.fcoe_silent_drop_pkt_cmdq_full_cnt);
p_stats->fcoe_silent_drop_pkt_rq_full_cnt =
le32_to_cpu(tstats.fcoe_silent_drop_pkt_rq_full_cnt);
p_stats->fcoe_silent_drop_pkt_crc_error_cnt =
le32_to_cpu(tstats.fcoe_silent_drop_pkt_crc_error_cnt);
p_stats->fcoe_silent_drop_pkt_task_invalid_cnt =
le32_to_cpu(tstats.fcoe_silent_drop_pkt_task_invalid_cnt);
p_stats->fcoe_silent_drop_total_pkt_cnt =
le32_to_cpu(tstats.fcoe_silent_drop_total_pkt_cnt);
}
static void _qed_fcoe_get_pstats(struct qed_hwfn *p_hwfn,
struct qed_ptt *p_ptt,
struct qed_fcoe_stats *p_stats)
{
struct fcoe_tx_stat pstats;
u32 pstats_addr;
memset(&pstats, 0, sizeof(pstats));
pstats_addr = BAR0_MAP_REG_PSDM_RAM +
PSTORM_FCOE_TX_STATS_OFFSET(p_hwfn->rel_pf_id);
qed_memcpy_from(p_hwfn, p_ptt, &pstats, pstats_addr, sizeof(pstats));
p_stats->fcoe_tx_byte_cnt = HILO_64_REGPAIR(pstats.fcoe_tx_byte_cnt);
p_stats->fcoe_tx_data_pkt_cnt =
HILO_64_REGPAIR(pstats.fcoe_tx_data_pkt_cnt);
p_stats->fcoe_tx_xfer_pkt_cnt =
HILO_64_REGPAIR(pstats.fcoe_tx_xfer_pkt_cnt);
p_stats->fcoe_tx_other_pkt_cnt =
HILO_64_REGPAIR(pstats.fcoe_tx_other_pkt_cnt);
}
static int qed_fcoe_get_stats(struct qed_hwfn *p_hwfn,
struct qed_fcoe_stats *p_stats)
{
struct qed_ptt *p_ptt;
memset(p_stats, 0, sizeof(*p_stats));
p_ptt = qed_ptt_acquire(p_hwfn);
if (!p_ptt) {
DP_ERR(p_hwfn, "Failed to acquire ptt\n");
return -EINVAL;
}
_qed_fcoe_get_tstats(p_hwfn, p_ptt, p_stats);
_qed_fcoe_get_pstats(p_hwfn, p_ptt, p_stats);
qed_ptt_release(p_hwfn, p_ptt);
return 0;
}
struct qed_hash_fcoe_con {
struct hlist_node node;
struct qed_fcoe_conn *con;
};
static int qed_fill_fcoe_dev_info(struct qed_dev *cdev,
struct qed_dev_fcoe_info *info)
{
struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev);
int rc;
memset(info, 0, sizeof(*info));
rc = qed_fill_dev_info(cdev, &info->common);
info->primary_dbq_rq_addr =
qed_fcoe_get_primary_bdq_prod(hwfn, BDQ_ID_RQ);
info->secondary_bdq_rq_addr =
qed_fcoe_get_secondary_bdq_prod(hwfn, BDQ_ID_RQ);
info->wwpn = hwfn->mcp_info->func_info.wwn_port;
info->wwnn = hwfn->mcp_info->func_info.wwn_node;
info->num_cqs = FEAT_NUM(hwfn, QED_FCOE_CQ);
return rc;
}
static void qed_register_fcoe_ops(struct qed_dev *cdev,
struct qed_fcoe_cb_ops *ops, void *cookie)
{
cdev->protocol_ops.fcoe = ops;
cdev->ops_cookie = cookie;
}
static struct qed_hash_fcoe_con *qed_fcoe_get_hash(struct qed_dev *cdev,
u32 handle)
{
struct qed_hash_fcoe_con *hash_con = NULL;
if (!(cdev->flags & QED_FLAG_STORAGE_STARTED))
return NULL;
hash_for_each_possible(cdev->connections, hash_con, node, handle) {
if (hash_con->con->icid == handle)
break;
}
if (!hash_con || (hash_con->con->icid != handle))
return NULL;
return hash_con;
}
static int qed_fcoe_stop(struct qed_dev *cdev)
{
struct qed_ptt *p_ptt;
int rc;
if (!(cdev->flags & QED_FLAG_STORAGE_STARTED)) {
DP_NOTICE(cdev, "fcoe already stopped\n");
return 0;
}
if (!hash_empty(cdev->connections)) {
DP_NOTICE(cdev,
"Can't stop fcoe - not all connections were returned\n");
return -EINVAL;
}
p_ptt = qed_ptt_acquire(QED_LEADING_HWFN(cdev));
if (!p_ptt)
return -EAGAIN;
/* Stop the fcoe */
rc = qed_sp_fcoe_func_stop(QED_LEADING_HWFN(cdev), p_ptt,
QED_SPQ_MODE_EBLOCK, NULL);
cdev->flags &= ~QED_FLAG_STORAGE_STARTED;
qed_ptt_release(QED_LEADING_HWFN(cdev), p_ptt);
return rc;
}
static int qed_fcoe_start(struct qed_dev *cdev, struct qed_fcoe_tid *tasks)
{
int rc;
if (cdev->flags & QED_FLAG_STORAGE_STARTED) {
DP_NOTICE(cdev, "fcoe already started;\n");
return 0;
}
rc = qed_sp_fcoe_func_start(QED_LEADING_HWFN(cdev),
QED_SPQ_MODE_EBLOCK, NULL);
if (rc) {
DP_NOTICE(cdev, "Failed to start fcoe\n");
return rc;
}
cdev->flags |= QED_FLAG_STORAGE_STARTED;
hash_init(cdev->connections);
if (tasks) {
struct qed_tid_mem *tid_info = kzalloc(sizeof(*tid_info),
GFP_ATOMIC);
if (!tid_info) {
DP_NOTICE(cdev,
"Failed to allocate tasks information\n");
qed_fcoe_stop(cdev);
return -ENOMEM;
}
rc = qed_cxt_get_tid_mem_info(QED_LEADING_HWFN(cdev), tid_info);
if (rc) {
DP_NOTICE(cdev, "Failed to gather task information\n");
qed_fcoe_stop(cdev);
kfree(tid_info);
return rc;
}
/* Fill task information */
tasks->size = tid_info->tid_size;
tasks->num_tids_per_block = tid_info->num_tids_per_block;
memcpy(tasks->blocks, tid_info->blocks,
MAX_TID_BLOCKS_FCOE * sizeof(u8 *));
kfree(tid_info);
}
return 0;
}
static int qed_fcoe_acquire_conn(struct qed_dev *cdev,
u32 *handle,
u32 *fw_cid, void __iomem **p_doorbell)
{
struct qed_hash_fcoe_con *hash_con;
int rc;
/* Allocate a hashed connection */
hash_con = kzalloc(sizeof(*hash_con), GFP_KERNEL);
if (!hash_con) {
DP_NOTICE(cdev, "Failed to allocate hashed connection\n");
return -ENOMEM;
}
/* Acquire the connection */
rc = qed_fcoe_acquire_connection(QED_LEADING_HWFN(cdev), NULL,
&hash_con->con);
if (rc) {
DP_NOTICE(cdev, "Failed to acquire Connection\n");
kfree(hash_con);
return rc;
}
/* Added the connection to hash table */
*handle = hash_con->con->icid;
*fw_cid = hash_con->con->fw_cid;
hash_add(cdev->connections, &hash_con->node, *handle);
if (p_doorbell)
*p_doorbell = qed_fcoe_get_db_addr(QED_LEADING_HWFN(cdev),
*handle);
return 0;
}
static int qed_fcoe_release_conn(struct qed_dev *cdev, u32 handle)
{
struct qed_hash_fcoe_con *hash_con;
hash_con = qed_fcoe_get_hash(cdev, handle);
if (!hash_con) {
DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
handle);
return -EINVAL;
}
hlist_del(&hash_con->node);
qed_fcoe_release_connection(QED_LEADING_HWFN(cdev), hash_con->con);
kfree(hash_con);
return 0;
}
static int qed_fcoe_offload_conn(struct qed_dev *cdev,
u32 handle,
struct qed_fcoe_params_offload *conn_info)
{
struct qed_hash_fcoe_con *hash_con;
struct qed_fcoe_conn *con;
hash_con = qed_fcoe_get_hash(cdev, handle);
if (!hash_con) {
DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
handle);
return -EINVAL;
}
/* Update the connection with information from the params */
con = hash_con->con;
con->sq_pbl_addr = conn_info->sq_pbl_addr;
con->sq_curr_page_addr = conn_info->sq_curr_page_addr;
con->sq_next_page_addr = conn_info->sq_next_page_addr;
con->tx_max_fc_pay_len = conn_info->tx_max_fc_pay_len;
con->e_d_tov_timer_val = conn_info->e_d_tov_timer_val;
con->rec_tov_timer_val = conn_info->rec_tov_timer_val;
con->rx_max_fc_pay_len = conn_info->rx_max_fc_pay_len;
con->vlan_tag = conn_info->vlan_tag;
con->max_conc_seqs_c3 = conn_info->max_conc_seqs_c3;
con->flags = conn_info->flags;
con->def_q_idx = conn_info->def_q_idx;
con->src_mac_addr_hi = (conn_info->src_mac[5] << 8) |
conn_info->src_mac[4];
con->src_mac_addr_mid = (conn_info->src_mac[3] << 8) |
conn_info->src_mac[2];
con->src_mac_addr_lo = (conn_info->src_mac[1] << 8) |
conn_info->src_mac[0];
con->dst_mac_addr_hi = (conn_info->dst_mac[5] << 8) |
conn_info->dst_mac[4];
con->dst_mac_addr_mid = (conn_info->dst_mac[3] << 8) |
conn_info->dst_mac[2];
con->dst_mac_addr_lo = (conn_info->dst_mac[1] << 8) |
conn_info->dst_mac[0];
con->s_id.addr_hi = conn_info->s_id.addr_hi;
con->s_id.addr_mid = conn_info->s_id.addr_mid;
con->s_id.addr_lo = conn_info->s_id.addr_lo;
con->d_id.addr_hi = conn_info->d_id.addr_hi;
con->d_id.addr_mid = conn_info->d_id.addr_mid;
con->d_id.addr_lo = conn_info->d_id.addr_lo;
return qed_sp_fcoe_conn_offload(QED_LEADING_HWFN(cdev), con,
QED_SPQ_MODE_EBLOCK, NULL);
}
static int qed_fcoe_destroy_conn(struct qed_dev *cdev,
u32 handle, dma_addr_t terminate_params)
{
struct qed_hash_fcoe_con *hash_con;
struct qed_fcoe_conn *con;
hash_con = qed_fcoe_get_hash(cdev, handle);
if (!hash_con) {
DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
handle);
return -EINVAL;
}
/* Update the connection with information from the params */
con = hash_con->con;
con->terminate_params = terminate_params;
return qed_sp_fcoe_conn_destroy(QED_LEADING_HWFN(cdev), con,
QED_SPQ_MODE_EBLOCK, NULL);
}
static int qed_fcoe_stats(struct qed_dev *cdev, struct qed_fcoe_stats *stats)
{
return qed_fcoe_get_stats(QED_LEADING_HWFN(cdev), stats);
}
void qed_get_protocol_stats_fcoe(struct qed_dev *cdev,
struct qed_mcp_fcoe_stats *stats)
{
struct qed_fcoe_stats proto_stats;
/* Retrieve FW statistics */
memset(&proto_stats, 0, sizeof(proto_stats));
if (qed_fcoe_stats(cdev, &proto_stats)) {
DP_VERBOSE(cdev, QED_MSG_STORAGE,
"Failed to collect FCoE statistics\n");
return;
}
/* Translate FW statistics into struct */
stats->rx_pkts = proto_stats.fcoe_rx_data_pkt_cnt +
proto_stats.fcoe_rx_xfer_pkt_cnt +
proto_stats.fcoe_rx_other_pkt_cnt;
stats->tx_pkts = proto_stats.fcoe_tx_data_pkt_cnt +
proto_stats.fcoe_tx_xfer_pkt_cnt +
proto_stats.fcoe_tx_other_pkt_cnt;
stats->fcs_err = proto_stats.fcoe_silent_drop_pkt_crc_error_cnt;
/* Request protocol driver to fill-in the rest */
if (cdev->protocol_ops.fcoe && cdev->ops_cookie) {
struct qed_fcoe_cb_ops *ops = cdev->protocol_ops.fcoe;
void *cookie = cdev->ops_cookie;
if (ops->get_login_failures)
stats->login_failure = ops->get_login_failures(cookie);
}
}
static const struct qed_fcoe_ops qed_fcoe_ops_pass = {
.common = &qed_common_ops_pass,
.ll2 = &qed_ll2_ops_pass,
.fill_dev_info = &qed_fill_fcoe_dev_info,
.start = &qed_fcoe_start,
.stop = &qed_fcoe_stop,
.register_ops = &qed_register_fcoe_ops,
.acquire_conn = &qed_fcoe_acquire_conn,
.release_conn = &qed_fcoe_release_conn,
.offload_conn = &qed_fcoe_offload_conn,
.destroy_conn = &qed_fcoe_destroy_conn,
.get_stats = &qed_fcoe_stats,
};
const struct qed_fcoe_ops *qed_get_fcoe_ops(void)
{
return &qed_fcoe_ops_pass;
}
EXPORT_SYMBOL(qed_get_fcoe_ops);
void qed_put_fcoe_ops(void)
{
}
EXPORT_SYMBOL(qed_put_fcoe_ops);
