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Commit fc831825 authored by Yuval Mintz's avatar Yuval Mintz Committed by David S. Miller
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qed: Add support for hardware offloaded iSCSI. 

This adds the backbone required for the various HW initalizations
which are necessary for the iSCSI driver (qedi) for QLogic FastLinQ
4xxxx line of adapters - FW notification, resource initializations, etc.
Signed-off-by: default avatarArun Easi <arun.easi@cavium.com>
Signed-off-by: default avatarYuval Mintz <yuval.mintz@cavium.com>
Reviewed-by: default avatarJohannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: default avatarHannes Reinecke <hare@suse.de>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent b14945ac
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Showing with 1602 additions and 2 deletions
drivers/net/ethernet/qlogic/Kconfig
View file @ fc831825
...@@ -110,4 +110,7 @@ config QEDE ...@@ -110,4 +110,7 @@ config QEDE
config QED_RDMA config QED_RDMA
bool bool
config QED_ISCSI
bool
endif # NET_VENDOR_QLOGIC endif # NET_VENDOR_QLOGIC
drivers/net/ethernet/qlogic/qed/Makefile
View file @ fc831825
...@@ -6,3 +6,4 @@ qed-y := qed_cxt.o qed_dev.o qed_hw.o qed_init_fw_funcs.o qed_init_ops.o \ ...@@ -6,3 +6,4 @@ qed-y := qed_cxt.o qed_dev.o qed_hw.o qed_init_fw_funcs.o qed_init_ops.o \
qed-$(CONFIG_QED_SRIOV) += qed_sriov.o qed_vf.o qed-$(CONFIG_QED_SRIOV) += qed_sriov.o qed_vf.o
qed-$(CONFIG_QED_LL2) += qed_ll2.o qed-$(CONFIG_QED_LL2) += qed_ll2.o
qed-$(CONFIG_QED_RDMA) += qed_roce.o qed-$(CONFIG_QED_RDMA) += qed_roce.o
qed-$(CONFIG_QED_ISCSI) += qed_iscsi.o
drivers/net/ethernet/qlogic/qed/qed.h
View file @ fc831825
...@@ -35,6 +35,7 @@ extern const struct qed_common_ops qed_common_ops_pass; ...@@ -35,6 +35,7 @@ extern const struct qed_common_ops qed_common_ops_pass;
#define QED_WFQ_UNIT 100 #define QED_WFQ_UNIT 100
#define ISCSI_BDQ_ID(_port_id) (_port_id)
#define QED_WID_SIZE (1024) #define QED_WID_SIZE (1024)
#define QED_PF_DEMS_SIZE (4) #define QED_PF_DEMS_SIZE (4)
...@@ -383,6 +384,7 @@ struct qed_hwfn { ...@@ -383,6 +384,7 @@ struct qed_hwfn {
bool using_ll2; bool using_ll2;
struct qed_ll2_info *p_ll2_info; struct qed_ll2_info *p_ll2_info;
struct qed_rdma_info *p_rdma_info; struct qed_rdma_info *p_rdma_info;
struct qed_iscsi_info *p_iscsi_info;
struct qed_pf_params pf_params; struct qed_pf_params pf_params;
bool b_rdma_enabled_in_prs; bool b_rdma_enabled_in_prs;
...@@ -581,6 +583,8 @@ struct qed_dev { ...@@ -581,6 +583,8 @@ struct qed_dev {
/* Linux specific here */ /* Linux specific here */
struct qede_dev *edev; struct qede_dev *edev;
struct pci_dev *pdev; struct pci_dev *pdev;
u32 flags;
#define QED_FLAG_STORAGE_STARTED (BIT(0))
int msg_enable; int msg_enable;
struct pci_params pci_params; struct pci_params pci_params;
...@@ -594,6 +598,7 @@ struct qed_dev { ...@@ -594,6 +598,7 @@ struct qed_dev {
union { union {
struct qed_common_cb_ops *common; struct qed_common_cb_ops *common;
struct qed_eth_cb_ops *eth; struct qed_eth_cb_ops *eth;
struct qed_iscsi_cb_ops *iscsi;
} protocol_ops; } protocol_ops;
void *ops_cookie; void *ops_cookie;
...@@ -603,7 +608,7 @@ struct qed_dev { ...@@ -603,7 +608,7 @@ struct qed_dev {
struct qed_cb_ll2_info *ll2; struct qed_cb_ll2_info *ll2;
u8 ll2_mac_address[ETH_ALEN]; u8 ll2_mac_address[ETH_ALEN];
#endif #endif
DECLARE_HASHTABLE(connections, 10);
const struct firmware *firmware; const struct firmware *firmware;
u32 rdma_max_sge; u32 rdma_max_sge;
......
drivers/net/ethernet/qlogic/qed/qed_dev.c
View file @ fc831825
...@@ -29,6 +29,7 @@ ...@@ -29,6 +29,7 @@
#include "qed_hw.h" #include "qed_hw.h"
#include "qed_init_ops.h" #include "qed_init_ops.h"
#include "qed_int.h" #include "qed_int.h"
#include "qed_iscsi.h"
#include "qed_ll2.h" #include "qed_ll2.h"
#include "qed_mcp.h" #include "qed_mcp.h"
#include "qed_reg_addr.h" #include "qed_reg_addr.h"
...@@ -146,6 +147,8 @@ void qed_resc_free(struct qed_dev *cdev) ...@@ -146,6 +147,8 @@ void qed_resc_free(struct qed_dev *cdev)
#ifdef CONFIG_QED_LL2 #ifdef CONFIG_QED_LL2
qed_ll2_free(p_hwfn, p_hwfn->p_ll2_info); qed_ll2_free(p_hwfn, p_hwfn->p_ll2_info);
#endif #endif
if (p_hwfn->hw_info.personality == QED_PCI_ISCSI)
qed_iscsi_free(p_hwfn, p_hwfn->p_iscsi_info);
qed_iov_free(p_hwfn); qed_iov_free(p_hwfn);
qed_dmae_info_free(p_hwfn); qed_dmae_info_free(p_hwfn);
qed_dcbx_info_free(p_hwfn, p_hwfn->p_dcbx_info); qed_dcbx_info_free(p_hwfn, p_hwfn->p_dcbx_info);
...@@ -402,6 +405,7 @@ int qed_qm_reconf(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt) ...@@ -402,6 +405,7 @@ int qed_qm_reconf(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt)
int qed_resc_alloc(struct qed_dev *cdev) int qed_resc_alloc(struct qed_dev *cdev)
{ {
struct qed_iscsi_info *p_iscsi_info;
#ifdef CONFIG_QED_LL2 #ifdef CONFIG_QED_LL2
struct qed_ll2_info *p_ll2_info; struct qed_ll2_info *p_ll2_info;
#endif #endif
...@@ -507,6 +511,12 @@ int qed_resc_alloc(struct qed_dev *cdev) ...@@ -507,6 +511,12 @@ int qed_resc_alloc(struct qed_dev *cdev)
p_hwfn->p_ll2_info = p_ll2_info; p_hwfn->p_ll2_info = p_ll2_info;
} }
#endif #endif
if (p_hwfn->hw_info.personality == QED_PCI_ISCSI) {
p_iscsi_info = qed_iscsi_alloc(p_hwfn);
if (!p_iscsi_info)
goto alloc_no_mem;
p_hwfn->p_iscsi_info = p_iscsi_info;
}
/* DMA info initialization */ /* DMA info initialization */
rc = qed_dmae_info_alloc(p_hwfn); rc = qed_dmae_info_alloc(p_hwfn);
...@@ -560,6 +570,8 @@ void qed_resc_setup(struct qed_dev *cdev) ...@@ -560,6 +570,8 @@ void qed_resc_setup(struct qed_dev *cdev)
if (p_hwfn->using_ll2) if (p_hwfn->using_ll2)
qed_ll2_setup(p_hwfn, p_hwfn->p_ll2_info); qed_ll2_setup(p_hwfn, p_hwfn->p_ll2_info);
#endif #endif
if (p_hwfn->hw_info.personality == QED_PCI_ISCSI)
qed_iscsi_setup(p_hwfn, p_hwfn->p_iscsi_info);
} }
} }
......
drivers/net/ethernet/qlogic/qed/qed_iscsi.c 0 → 100644
View file @ fc831825
/* QLogic qed NIC Driver
* Copyright (c) 2015 QLogic Corporation
*
* 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/types.h>
#include <asm/byteorder.h>
#include <asm/param.h>
#include <linux/delay.h>
#include <linux/dma-mapping.h>
#include <linux/etherdevice.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/version.h>
#include <linux/workqueue.h>
#include <linux/errno.h>
#include <linux/list.h>
#include <linux/spinlock.h>
#include <linux/qed/qed_iscsi_if.h>
#include "qed.h"
#include "qed_cxt.h"
#include "qed_dev_api.h"
#include "qed_hsi.h"
#include "qed_hw.h"
#include "qed_int.h"
#include "qed_iscsi.h"
#include "qed_ll2.h"
#include "qed_mcp.h"
#include "qed_sp.h"
#include "qed_sriov.h"
#include "qed_reg_addr.h"
struct qed_iscsi_conn {
struct list_head list_entry;
bool free_on_delete;
u16 conn_id;
u32 icid;
u32 fw_cid;
u8 layer_code;
u8 offl_flags;
u8 connect_mode;
u32 initial_ack;
dma_addr_t sq_pbl_addr;
struct qed_chain r2tq;
struct qed_chain xhq;
struct qed_chain uhq;
struct tcp_upload_params *tcp_upload_params_virt_addr;
dma_addr_t tcp_upload_params_phys_addr;
struct scsi_terminate_extra_params *queue_cnts_virt_addr;
dma_addr_t queue_cnts_phys_addr;
dma_addr_t syn_phy_addr;
u16 syn_ip_payload_length;
u8 local_mac[6];
u8 remote_mac[6];
u16 vlan_id;
u8 tcp_flags;
u8 ip_version;
u32 remote_ip[4];
u32 local_ip[4];
u8 ka_max_probe_cnt;
u8 dup_ack_theshold;
u32 rcv_next;
u32 snd_una;
u32 snd_next;
u32 snd_max;
u32 snd_wnd;
u32 rcv_wnd;
u32 snd_wl1;
u32 cwnd;
u32 ss_thresh;
u16 srtt;
u16 rtt_var;
u32 ts_time;
u32 ts_recent;
u32 ts_recent_age;
u32 total_rt;
u32 ka_timeout_delta;
u32 rt_timeout_delta;
u8 dup_ack_cnt;
u8 snd_wnd_probe_cnt;
u8 ka_probe_cnt;
u8 rt_cnt;
u32 flow_label;
u32 ka_timeout;
u32 ka_interval;
u32 max_rt_time;
u32 initial_rcv_wnd;
u8 ttl;
u8 tos_or_tc;
u16 remote_port;
u16 local_port;
u16 mss;
u8 snd_wnd_scale;
u8 rcv_wnd_scale;
u32 ts_ticks_per_second;
u16 da_timeout_value;
u8 ack_frequency;
u8 update_flag;
u8 default_cq;
u32 max_seq_size;
u32 max_recv_pdu_length;
u32 max_send_pdu_length;
u32 first_seq_length;
u32 exp_stat_sn;
u32 stat_sn;
u16 physical_q0;
u16 physical_q1;
u8 abortive_dsconnect;
};
static int
qed_sp_iscsi_func_start(struct qed_hwfn *p_hwfn,
enum spq_mode comp_mode,
struct qed_spq_comp_cb *p_comp_addr,
void *event_context, iscsi_event_cb_t async_event_cb)
{
struct iscsi_init_ramrod_params *p_ramrod = NULL;
struct scsi_init_func_queues *p_queue = NULL;
struct qed_iscsi_pf_params *p_params = NULL;
struct iscsi_spe_func_init *p_init = NULL;
struct qed_spq_entry *p_ent = NULL;
struct qed_sp_init_data init_data;
int rc = 0;
u32 dval;
u16 val;
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,
ISCSI_RAMROD_CMD_ID_INIT_FUNC,
PROTOCOLID_ISCSI, &init_data);
if (rc)
return rc;
p_ramrod = &p_ent->ramrod.iscsi_init;
p_init = &p_ramrod->iscsi_init_spe;
p_params = &p_hwfn->pf_params.iscsi_pf_params;
p_queue = &p_init->q_params;
SET_FIELD(p_init->hdr.flags,
ISCSI_SLOW_PATH_HDR_LAYER_CODE, ISCSI_SLOW_PATH_LAYER_CODE);
p_init->hdr.op_code = ISCSI_RAMROD_CMD_ID_INIT_FUNC;
val = p_params->half_way_close_timeout;
p_init->half_way_close_timeout = cpu_to_le16(val);
p_init->num_sq_pages_in_ring = p_params->num_sq_pages_in_ring;
p_init->num_r2tq_pages_in_ring = p_params->num_r2tq_pages_in_ring;
p_init->num_uhq_pages_in_ring = p_params->num_uhq_pages_in_ring;
p_init->func_params.log_page_size = p_params->log_page_size;
val = p_params->num_tasks;
p_init->func_params.num_tasks = cpu_to_le16(val);
p_init->debug_mode.flags = p_params->debug_mode;
DMA_REGPAIR_LE(p_queue->glbl_q_params_addr,
p_params->glbl_q_params_addr);
val = p_params->cq_num_entries;
p_queue->cq_num_entries = cpu_to_le16(val);
val = p_params->cmdq_num_entries;
p_queue->cmdq_num_entries = cpu_to_le16(val);
p_queue->num_queues = p_params->num_queues;
dval = (u8)p_hwfn->hw_info.resc_start[QED_CMDQS_CQS];
p_queue->queue_relative_offset = (u8)dval;
p_queue->cq_sb_pi = p_params->gl_rq_pi;
p_queue->cmdq_sb_pi = p_params->gl_cmd_pi;
for (i = 0; i < p_params->num_queues; i++) {
val = p_hwfn->sbs_info[i]->igu_sb_id;
p_queue->cq_cmdq_sb_num_arr[i] = cpu_to_le16(val);
}
p_queue->bdq_resource_id = ISCSI_BDQ_ID(p_hwfn->port_id);
DMA_REGPAIR_LE(p_queue->bdq_pbl_base_address[BDQ_ID_RQ],
p_params->bdq_pbl_base_addr[BDQ_ID_RQ]);
p_queue->bdq_pbl_num_entries[BDQ_ID_RQ] =
p_params->bdq_pbl_num_entries[BDQ_ID_RQ];
val = p_params->bdq_xoff_threshold[BDQ_ID_RQ];
p_queue->bdq_xoff_threshold[BDQ_ID_RQ] = cpu_to_le16(val);
val = p_params->bdq_xon_threshold[BDQ_ID_RQ];
p_queue->bdq_xon_threshold[BDQ_ID_RQ] = cpu_to_le16(val);
DMA_REGPAIR_LE(p_queue->bdq_pbl_base_address[BDQ_ID_IMM_DATA],
p_params->bdq_pbl_base_addr[BDQ_ID_IMM_DATA]);
p_queue->bdq_pbl_num_entries[BDQ_ID_IMM_DATA] =
p_params->bdq_pbl_num_entries[BDQ_ID_IMM_DATA];
val = p_params->bdq_xoff_threshold[BDQ_ID_IMM_DATA];
p_queue->bdq_xoff_threshold[BDQ_ID_IMM_DATA] = cpu_to_le16(val);
val = p_params->bdq_xon_threshold[BDQ_ID_IMM_DATA];
p_queue->bdq_xon_threshold[BDQ_ID_IMM_DATA] = cpu_to_le16(val);
val = p_params->rq_buffer_size;
p_queue->rq_buffer_size = cpu_to_le16(val);
if (p_params->is_target) {
SET_FIELD(p_queue->q_validity,
SCSI_INIT_FUNC_QUEUES_RQ_VALID, 1);
if (p_queue->bdq_pbl_num_entries[BDQ_ID_IMM_DATA])
SET_FIELD(p_queue->q_validity,
SCSI_INIT_FUNC_QUEUES_IMM_DATA_VALID, 1);
SET_FIELD(p_queue->q_validity,
SCSI_INIT_FUNC_QUEUES_CMD_VALID, 1);
} else {
SET_FIELD(p_queue->q_validity,
SCSI_INIT_FUNC_QUEUES_RQ_VALID, 1);
}
p_ramrod->tcp_init.two_msl_timer = cpu_to_le32(p_params->two_msl_timer);
val = p_params->tx_sws_timer;
p_ramrod->tcp_init.tx_sws_timer = cpu_to_le16(val);
p_ramrod->tcp_init.maxfinrt = p_params->max_fin_rt;
p_hwfn->p_iscsi_info->event_context = event_context;
p_hwfn->p_iscsi_info->event_cb = async_event_cb;
return qed_spq_post(p_hwfn, p_ent, NULL);
}
static int qed_sp_iscsi_conn_offload(struct qed_hwfn *p_hwfn,
struct qed_iscsi_conn *p_conn,
enum spq_mode comp_mode,
struct qed_spq_comp_cb *p_comp_addr)
{
struct iscsi_spe_conn_offload *p_ramrod = NULL;
struct tcp_offload_params_opt2 *p_tcp2 = NULL;
struct tcp_offload_params *p_tcp = NULL;
struct qed_spq_entry *p_ent = NULL;
struct qed_sp_init_data init_data;
union qed_qm_pq_params pq_params;
u16 pq0_id = 0, pq1_id = 0;
dma_addr_t r2tq_pbl_addr;
dma_addr_t xhq_pbl_addr;
dma_addr_t uhq_pbl_addr;
int rc = 0;
u32 dval;
u16 wval;
u8 i;
u16 *p;
/* 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,
ISCSI_RAMROD_CMD_ID_OFFLOAD_CONN,
PROTOCOLID_ISCSI, &init_data);
if (rc)
return rc;
p_ramrod = &p_ent->ramrod.iscsi_conn_offload;
/* Transmission PQ is the first of the PF */
memset(&pq_params, 0, sizeof(pq_params));
pq0_id = qed_get_qm_pq(p_hwfn, PROTOCOLID_ISCSI, &pq_params);
p_conn->physical_q0 = cpu_to_le16(pq0_id);
p_ramrod->iscsi.physical_q0 = cpu_to_le16(pq0_id);
/* iSCSI Pure-ACK PQ */
pq_params.iscsi.q_idx = 1;
pq1_id = qed_get_qm_pq(p_hwfn, PROTOCOLID_ISCSI, &pq_params);
p_conn->physical_q1 = cpu_to_le16(pq1_id);
p_ramrod->iscsi.physical_q1 = cpu_to_le16(pq1_id);
p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_OFFLOAD_CONN;
SET_FIELD(p_ramrod->hdr.flags, ISCSI_SLOW_PATH_HDR_LAYER_CODE,
p_conn->layer_code);
p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
p_ramrod->fw_cid = cpu_to_le32(p_conn->icid);
DMA_REGPAIR_LE(p_ramrod->iscsi.sq_pbl_addr, p_conn->sq_pbl_addr);
r2tq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->r2tq);
DMA_REGPAIR_LE(p_ramrod->iscsi.r2tq_pbl_addr, r2tq_pbl_addr);
xhq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->xhq);
DMA_REGPAIR_LE(p_ramrod->iscsi.xhq_pbl_addr, xhq_pbl_addr);
uhq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->uhq);
DMA_REGPAIR_LE(p_ramrod->iscsi.uhq_pbl_addr, uhq_pbl_addr);
p_ramrod->iscsi.initial_ack = cpu_to_le32(p_conn->initial_ack);
p_ramrod->iscsi.flags = p_conn->offl_flags;
p_ramrod->iscsi.default_cq = p_conn->default_cq;
p_ramrod->iscsi.stat_sn = cpu_to_le32(p_conn->stat_sn);
if (!GET_FIELD(p_ramrod->iscsi.flags,
ISCSI_CONN_OFFLOAD_PARAMS_TCP_ON_CHIP_1B)) {
p_tcp = &p_ramrod->tcp;
p = (u16 *)p_conn->local_mac;
p_tcp->local_mac_addr_hi = swab16(get_unaligned(p));
p_tcp->local_mac_addr_mid = swab16(get_unaligned(p + 1));
p_tcp->local_mac_addr_lo = swab16(get_unaligned(p + 2));
p = (u16 *)p_conn->remote_mac;
p_tcp->remote_mac_addr_hi = swab16(get_unaligned(p));
p_tcp->remote_mac_addr_mid = swab16(get_unaligned(p + 1));
p_tcp->remote_mac_addr_lo = swab16(get_unaligned(p + 2));
p_tcp->vlan_id = cpu_to_le16(p_conn->vlan_id);
p_tcp->flags = p_conn->tcp_flags;
p_tcp->ip_version = p_conn->ip_version;
for (i = 0; i < 4; i++) {
dval = p_conn->remote_ip[i];
p_tcp->remote_ip[i] = cpu_to_le32(dval);
dval = p_conn->local_ip[i];
p_tcp->local_ip[i] = cpu_to_le32(dval);
}
p_tcp->ka_max_probe_cnt = p_conn->ka_max_probe_cnt;
p_tcp->dup_ack_theshold = p_conn->dup_ack_theshold;
p_tcp->rcv_next = cpu_to_le32(p_conn->rcv_next);
p_tcp->snd_una = cpu_to_le32(p_conn->snd_una);
p_tcp->snd_next = cpu_to_le32(p_conn->snd_next);
p_tcp->snd_max = cpu_to_le32(p_conn->snd_max);
p_tcp->snd_wnd = cpu_to_le32(p_conn->snd_wnd);
p_tcp->rcv_wnd = cpu_to_le32(p_conn->rcv_wnd);
p_tcp->snd_wl1 = cpu_to_le32(p_conn->snd_wl1);
p_tcp->cwnd = cpu_to_le32(p_conn->cwnd);
p_tcp->ss_thresh = cpu_to_le32(p_conn->ss_thresh);
p_tcp->srtt = cpu_to_le16(p_conn->srtt);
p_tcp->rtt_var = cpu_to_le16(p_conn->rtt_var);
p_tcp->ts_time = cpu_to_le32(p_conn->ts_time);
p_tcp->ts_recent = cpu_to_le32(p_conn->ts_recent);
p_tcp->ts_recent_age = cpu_to_le32(p_conn->ts_recent_age);
p_tcp->total_rt = cpu_to_le32(p_conn->total_rt);
dval = p_conn->ka_timeout_delta;
p_tcp->ka_timeout_delta = cpu_to_le32(dval);
dval = p_conn->rt_timeout_delta;
p_tcp->rt_timeout_delta = cpu_to_le32(dval);
p_tcp->dup_ack_cnt = p_conn->dup_ack_cnt;
p_tcp->snd_wnd_probe_cnt = p_conn->snd_wnd_probe_cnt;
p_tcp->ka_probe_cnt = p_conn->ka_probe_cnt;
p_tcp->rt_cnt = p_conn->rt_cnt;
p_tcp->flow_label = cpu_to_le32(p_conn->flow_label);
p_tcp->ka_timeout = cpu_to_le32(p_conn->ka_timeout);
p_tcp->ka_interval = cpu_to_le32(p_conn->ka_interval);
p_tcp->max_rt_time = cpu_to_le32(p_conn->max_rt_time);
dval = p_conn->initial_rcv_wnd;
p_tcp->initial_rcv_wnd = cpu_to_le32(dval);
p_tcp->ttl = p_conn->ttl;
p_tcp->tos_or_tc = p_conn->tos_or_tc;
p_tcp->remote_port = cpu_to_le16(p_conn->remote_port);
p_tcp->local_port = cpu_to_le16(p_conn->local_port);
p_tcp->mss = cpu_to_le16(p_conn->mss);
p_tcp->snd_wnd_scale = p_conn->snd_wnd_scale;
p_tcp->rcv_wnd_scale = p_conn->rcv_wnd_scale;
dval = p_conn->ts_ticks_per_second;
p_tcp->ts_ticks_per_second = cpu_to_le32(dval);
wval = p_conn->da_timeout_value;
p_tcp->da_timeout_value = cpu_to_le16(wval);
p_tcp->ack_frequency = p_conn->ack_frequency;
p_tcp->connect_mode = p_conn->connect_mode;
} else {
p_tcp2 =
&((struct iscsi_spe_conn_offload_option2 *)p_ramrod)->tcp;
p = (u16 *)p_conn->local_mac;
p_tcp2->local_mac_addr_hi = swab16(get_unaligned(p));
p_tcp2->local_mac_addr_mid = swab16(get_unaligned(p + 1));
p_tcp2->local_mac_addr_lo = swab16(get_unaligned(p + 2));
p = (u16 *)p_conn->remote_mac;
p_tcp2->remote_mac_addr_hi = swab16(get_unaligned(p));
p_tcp2->remote_mac_addr_mid = swab16(get_unaligned(p + 1));
p_tcp2->remote_mac_addr_lo = swab16(get_unaligned(p + 2));
p_tcp2->vlan_id = cpu_to_le16(p_conn->vlan_id);
p_tcp2->flags = p_conn->tcp_flags;
p_tcp2->ip_version = p_conn->ip_version;
for (i = 0; i < 4; i++) {
dval = p_conn->remote_ip[i];
p_tcp2->remote_ip[i] = cpu_to_le32(dval);
dval = p_conn->local_ip[i];
p_tcp2->local_ip[i] = cpu_to_le32(dval);
}
p_tcp2->flow_label = cpu_to_le32(p_conn->flow_label);
p_tcp2->ttl = p_conn->ttl;
p_tcp2->tos_or_tc = p_conn->tos_or_tc;
p_tcp2->remote_port = cpu_to_le16(p_conn->remote_port);
p_tcp2->local_port = cpu_to_le16(p_conn->local_port);
p_tcp2->mss = cpu_to_le16(p_conn->mss);
p_tcp2->rcv_wnd_scale = p_conn->rcv_wnd_scale;
p_tcp2->connect_mode = p_conn->connect_mode;
wval = p_conn->syn_ip_payload_length;
p_tcp2->syn_ip_payload_length = cpu_to_le16(wval);
p_tcp2->syn_phy_addr_lo = DMA_LO_LE(p_conn->syn_phy_addr);
p_tcp2->syn_phy_addr_hi = DMA_HI_LE(p_conn->syn_phy_addr);
}
return qed_spq_post(p_hwfn, p_ent, NULL);
}
static int qed_sp_iscsi_conn_update(struct qed_hwfn *p_hwfn,
struct qed_iscsi_conn *p_conn,
enum spq_mode comp_mode,
struct qed_spq_comp_cb *p_comp_addr)
{
struct iscsi_conn_update_ramrod_params *p_ramrod = NULL;
struct qed_spq_entry *p_ent = NULL;
struct qed_sp_init_data init_data;
int rc = -EINVAL;
u32 dval;
/* 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,
ISCSI_RAMROD_CMD_ID_UPDATE_CONN,
PROTOCOLID_ISCSI, &init_data);
if (rc)
return rc;
p_ramrod = &p_ent->ramrod.iscsi_conn_update;
p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_UPDATE_CONN;
SET_FIELD(p_ramrod->hdr.flags,
ISCSI_SLOW_PATH_HDR_LAYER_CODE, p_conn->layer_code);
p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
p_ramrod->fw_cid = cpu_to_le32(p_conn->icid);
p_ramrod->flags = p_conn->update_flag;
p_ramrod->max_seq_size = cpu_to_le32(p_conn->max_seq_size);
dval = p_conn->max_recv_pdu_length;
p_ramrod->max_recv_pdu_length = cpu_to_le32(dval);
dval = p_conn->max_send_pdu_length;
p_ramrod->max_send_pdu_length = cpu_to_le32(dval);
dval = p_conn->first_seq_length;
p_ramrod->first_seq_length = cpu_to_le32(dval);
p_ramrod->exp_stat_sn = cpu_to_le32(p_conn->exp_stat_sn);
return qed_spq_post(p_hwfn, p_ent, NULL);
}
static int qed_sp_iscsi_conn_terminate(struct qed_hwfn *p_hwfn,
struct qed_iscsi_conn *p_conn,
enum spq_mode comp_mode,
struct qed_spq_comp_cb *p_comp_addr)
{
struct iscsi_spe_conn_termination *p_ramrod = NULL;
struct qed_spq_entry *p_ent = NULL;
struct qed_sp_init_data init_data;
int rc = -EINVAL;
/* 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,
ISCSI_RAMROD_CMD_ID_TERMINATION_CONN,
PROTOCOLID_ISCSI, &init_data);
if (rc)
return rc;
p_ramrod = &p_ent->ramrod.iscsi_conn_terminate;
p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_TERMINATION_CONN;
SET_FIELD(p_ramrod->hdr.flags,
ISCSI_SLOW_PATH_HDR_LAYER_CODE, p_conn->layer_code);
p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
p_ramrod->fw_cid = cpu_to_le32(p_conn->icid);
p_ramrod->abortive = p_conn->abortive_dsconnect;
DMA_REGPAIR_LE(p_ramrod->query_params_addr,
p_conn->tcp_upload_params_phys_addr);
DMA_REGPAIR_LE(p_ramrod->queue_cnts_addr, p_conn->queue_cnts_phys_addr);
return qed_spq_post(p_hwfn, p_ent, NULL);
}
static int qed_sp_iscsi_conn_clear_sq(struct qed_hwfn *p_hwfn,
struct qed_iscsi_conn *p_conn,
enum spq_mode comp_mode,
struct qed_spq_comp_cb *p_comp_addr)
{
struct iscsi_slow_path_hdr *p_ramrod = NULL;
struct qed_spq_entry *p_ent = NULL;
struct qed_sp_init_data init_data;
int rc = -EINVAL;
/* 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,
ISCSI_RAMROD_CMD_ID_CLEAR_SQ,
PROTOCOLID_ISCSI, &init_data);
if (rc)
return rc;
p_ramrod = &p_ent->ramrod.iscsi_empty;
p_ramrod->op_code = ISCSI_RAMROD_CMD_ID_CLEAR_SQ;
SET_FIELD(p_ramrod->flags,
ISCSI_SLOW_PATH_HDR_LAYER_CODE, p_conn->layer_code);
return qed_spq_post(p_hwfn, p_ent, NULL);
}
static int qed_sp_iscsi_func_stop(struct qed_hwfn *p_hwfn,
enum spq_mode comp_mode,
struct qed_spq_comp_cb *p_comp_addr)
{
struct iscsi_spe_func_dstry *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 = 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,
ISCSI_RAMROD_CMD_ID_DESTROY_FUNC,
PROTOCOLID_ISCSI, &init_data);
if (rc)
return rc;
p_ramrod = &p_ent->ramrod.iscsi_destroy;
p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_DESTROY_FUNC;
return qed_spq_post(p_hwfn, p_ent, NULL);
}
static void __iomem *qed_iscsi_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_iscsi_get_primary_bdq_prod(struct qed_hwfn *p_hwfn,
u8 bdq_id)
{
u8 bdq_function_id = ISCSI_BDQ_ID(p_hwfn->port_id);
return (u8 __iomem *)p_hwfn->regview + GTT_BAR0_MAP_REG_MSDM_RAM +
MSTORM_SCSI_BDQ_EXT_PROD_OFFSET(bdq_function_id,
bdq_id);
}
static void __iomem *qed_iscsi_get_secondary_bdq_prod(struct qed_hwfn *p_hwfn,
u8 bdq_id)
{
u8 bdq_function_id = ISCSI_BDQ_ID(p_hwfn->port_id);
return (u8 __iomem *)p_hwfn->regview + GTT_BAR0_MAP_REG_TSDM_RAM +
TSTORM_SCSI_BDQ_EXT_PROD_OFFSET(bdq_function_id,
bdq_id);
}
static int qed_iscsi_setup_connection(struct qed_hwfn *p_hwfn,
struct qed_iscsi_conn *p_conn)
{
if (!p_conn->queue_cnts_virt_addr)
goto nomem;
memset(p_conn->queue_cnts_virt_addr, 0,
sizeof(*p_conn->queue_cnts_virt_addr));
if (!p_conn->tcp_upload_params_virt_addr)
goto nomem;
memset(p_conn->tcp_upload_params_virt_addr, 0,
sizeof(*p_conn->tcp_upload_params_virt_addr));
if (!p_conn->r2tq.p_virt_addr)
goto nomem;
qed_chain_pbl_zero_mem(&p_conn->r2tq);
if (!p_conn->uhq.p_virt_addr)
goto nomem;
qed_chain_pbl_zero_mem(&p_conn->uhq);
if (!p_conn->xhq.p_virt_addr)
goto nomem;
qed_chain_pbl_zero_mem(&p_conn->xhq);
return 0;
nomem:
return -ENOMEM;
}
static int qed_iscsi_allocate_connection(struct qed_hwfn *p_hwfn,
struct qed_iscsi_conn **p_out_conn)
{
u16 uhq_num_elements = 0, xhq_num_elements = 0, r2tq_num_elements = 0;
struct scsi_terminate_extra_params *p_q_cnts = NULL;
struct qed_iscsi_pf_params *p_params = NULL;
struct tcp_upload_params *p_tcp = NULL;
struct qed_iscsi_conn *p_conn = NULL;
int rc = 0;
/* Try finding a free connection that can be used */
spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
if (!list_empty(&p_hwfn->p_iscsi_info->free_list))
p_conn = list_first_entry(&p_hwfn->p_iscsi_info->free_list,
struct qed_iscsi_conn, list_entry);
if (p_conn) {
list_del(&p_conn->list_entry);
spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
*p_out_conn = p_conn;
return 0;
}
spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
/* Need to allocate a new connection */
p_params = &p_hwfn->pf_params.iscsi_pf_params;
p_conn = kzalloc(sizeof(*p_conn), GFP_KERNEL);
if (!p_conn)
return -ENOMEM;
p_q_cnts = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
sizeof(*p_q_cnts),
&p_conn->queue_cnts_phys_addr,
GFP_KERNEL);
if (!p_q_cnts)
goto nomem_queue_cnts_param;
p_conn->queue_cnts_virt_addr = p_q_cnts;
p_tcp = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
sizeof(*p_tcp),
&p_conn->tcp_upload_params_phys_addr,
GFP_KERNEL);
if (!p_tcp)
goto nomem_upload_param;
p_conn->tcp_upload_params_virt_addr = p_tcp;
r2tq_num_elements = p_params->num_r2tq_pages_in_ring *
QED_CHAIN_PAGE_SIZE / 0x80;
rc = qed_chain_alloc(p_hwfn->cdev,
QED_CHAIN_USE_TO_CONSUME_PRODUCE,
QED_CHAIN_MODE_PBL,
QED_CHAIN_CNT_TYPE_U16,
r2tq_num_elements, 0x80, &p_conn->r2tq);
if (rc)
goto nomem_r2tq;
uhq_num_elements = p_params->num_uhq_pages_in_ring *
QED_CHAIN_PAGE_SIZE / sizeof(struct iscsi_uhqe);
rc = qed_chain_alloc(p_hwfn->cdev,
QED_CHAIN_USE_TO_CONSUME_PRODUCE,
QED_CHAIN_MODE_PBL,
QED_CHAIN_CNT_TYPE_U16,
uhq_num_elements,
sizeof(struct iscsi_uhqe), &p_conn->uhq);
if (rc)
goto nomem_uhq;
xhq_num_elements = uhq_num_elements;
rc = qed_chain_alloc(p_hwfn->cdev,
QED_CHAIN_USE_TO_CONSUME_PRODUCE,
QED_CHAIN_MODE_PBL,
QED_CHAIN_CNT_TYPE_U16,
xhq_num_elements,
sizeof(struct iscsi_xhqe), &p_conn->xhq);
if (rc)
goto nomem;
p_conn->free_on_delete = true;
*p_out_conn = p_conn;
return 0;
nomem:
qed_chain_free(p_hwfn->cdev, &p_conn->uhq);
nomem_uhq:
qed_chain_free(p_hwfn->cdev, &p_conn->r2tq);
nomem_r2tq:
dma_free_coherent(&p_hwfn->cdev->pdev->dev,
sizeof(struct tcp_upload_params),
p_conn->tcp_upload_params_virt_addr,
p_conn->tcp_upload_params_phys_addr);
nomem_upload_param:
dma_free_coherent(&p_hwfn->cdev->pdev->dev,
sizeof(struct scsi_terminate_extra_params),
p_conn->queue_cnts_virt_addr,
p_conn->queue_cnts_phys_addr);
nomem_queue_cnts_param:
kfree(p_conn);
return -ENOMEM;
}
static int qed_iscsi_acquire_connection(struct qed_hwfn *p_hwfn,
struct qed_iscsi_conn *p_in_conn,
struct qed_iscsi_conn **p_out_conn)
{
struct qed_iscsi_conn *p_conn = NULL;
int rc = 0;
u32 icid;
spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
rc = qed_cxt_acquire_cid(p_hwfn, PROTOCOLID_ISCSI, &icid);
spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
if (rc)
return rc;
/* Use input connection or allocate a new one */
if (p_in_conn)
p_conn = p_in_conn;
else
rc = qed_iscsi_allocate_connection(p_hwfn, &p_conn);
if (!rc)
rc = qed_iscsi_setup_connection(p_hwfn, p_conn);
if (rc) {
spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
qed_cxt_release_cid(p_hwfn, icid);
spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
return rc;
}
p_conn->icid = icid;
p_conn->conn_id = (u16)icid;
p_conn->fw_cid = (p_hwfn->hw_info.opaque_fid << 16) | icid;
*p_out_conn = p_conn;
return rc;
}
static void qed_iscsi_release_connection(struct qed_hwfn *p_hwfn,
struct qed_iscsi_conn *p_conn)
{
spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
list_add_tail(&p_conn->list_entry, &p_hwfn->p_iscsi_info->free_list);
qed_cxt_release_cid(p_hwfn, p_conn->icid);
spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
}
struct qed_iscsi_info *qed_iscsi_alloc(struct qed_hwfn *p_hwfn)
{
struct qed_iscsi_info *p_iscsi_info;
p_iscsi_info = kzalloc(sizeof(*p_iscsi_info), GFP_KERNEL);
if (!p_iscsi_info)
return NULL;
INIT_LIST_HEAD(&p_iscsi_info->free_list);
return p_iscsi_info;
}
void qed_iscsi_setup(struct qed_hwfn *p_hwfn,
struct qed_iscsi_info *p_iscsi_info)
{
spin_lock_init(&p_iscsi_info->lock);
}
void qed_iscsi_free(struct qed_hwfn *p_hwfn,
struct qed_iscsi_info *p_iscsi_info)
{
kfree(p_iscsi_info);
}
static void _qed_iscsi_get_tstats(struct qed_hwfn *p_hwfn,
struct qed_ptt *p_ptt,
struct qed_iscsi_stats *p_stats)
{
struct tstorm_iscsi_stats_drv tstats;
u32 tstats_addr;
memset(&tstats, 0, sizeof(tstats));
tstats_addr = BAR0_MAP_REG_TSDM_RAM +
TSTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id);
qed_memcpy_from(p_hwfn, p_ptt, &tstats, tstats_addr, sizeof(tstats));
p_stats->iscsi_rx_bytes_cnt =
HILO_64_REGPAIR(tstats.iscsi_rx_bytes_cnt);
p_stats->iscsi_rx_packet_cnt =
HILO_64_REGPAIR(tstats.iscsi_rx_packet_cnt);
p_stats->iscsi_cmdq_threshold_cnt =
le32_to_cpu(tstats.iscsi_cmdq_threshold_cnt);
p_stats->iscsi_rq_threshold_cnt =
le32_to_cpu(tstats.iscsi_rq_threshold_cnt);
p_stats->iscsi_immq_threshold_cnt =
le32_to_cpu(tstats.iscsi_immq_threshold_cnt);
}
static void _qed_iscsi_get_mstats(struct qed_hwfn *p_hwfn,
struct qed_ptt *p_ptt,
struct qed_iscsi_stats *p_stats)
{
struct mstorm_iscsi_stats_drv mstats;
u32 mstats_addr;
memset(&mstats, 0, sizeof(mstats));
mstats_addr = BAR0_MAP_REG_MSDM_RAM +
MSTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id);
qed_memcpy_from(p_hwfn, p_ptt, &mstats, mstats_addr, sizeof(mstats));
p_stats->iscsi_rx_dropped_pdus_task_not_valid =
HILO_64_REGPAIR(mstats.iscsi_rx_dropped_pdus_task_not_valid);
}
static void _qed_iscsi_get_ustats(struct qed_hwfn *p_hwfn,
struct qed_ptt *p_ptt,
struct qed_iscsi_stats *p_stats)
{
struct ustorm_iscsi_stats_drv ustats;
u32 ustats_addr;
memset(&ustats, 0, sizeof(ustats));
ustats_addr = BAR0_MAP_REG_USDM_RAM +
USTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id);
qed_memcpy_from(p_hwfn, p_ptt, &ustats, ustats_addr, sizeof(ustats));
p_stats->iscsi_rx_data_pdu_cnt =
HILO_64_REGPAIR(ustats.iscsi_rx_data_pdu_cnt);
p_stats->iscsi_rx_r2t_pdu_cnt =
HILO_64_REGPAIR(ustats.iscsi_rx_r2t_pdu_cnt);
p_stats->iscsi_rx_total_pdu_cnt =
HILO_64_REGPAIR(ustats.iscsi_rx_total_pdu_cnt);
}
static void _qed_iscsi_get_xstats(struct qed_hwfn *p_hwfn,
struct qed_ptt *p_ptt,
struct qed_iscsi_stats *p_stats)
{
struct xstorm_iscsi_stats_drv xstats;
u32 xstats_addr;
memset(&xstats, 0, sizeof(xstats));
xstats_addr = BAR0_MAP_REG_XSDM_RAM +
XSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id);
qed_memcpy_from(p_hwfn, p_ptt, &xstats, xstats_addr, sizeof(xstats));
p_stats->iscsi_tx_go_to_slow_start_event_cnt =
HILO_64_REGPAIR(xstats.iscsi_tx_go_to_slow_start_event_cnt);
p_stats->iscsi_tx_fast_retransmit_event_cnt =
HILO_64_REGPAIR(xstats.iscsi_tx_fast_retransmit_event_cnt);
}
static void _qed_iscsi_get_ystats(struct qed_hwfn *p_hwfn,
struct qed_ptt *p_ptt,
struct qed_iscsi_stats *p_stats)
{
struct ystorm_iscsi_stats_drv ystats;
u32 ystats_addr;
memset(&ystats, 0, sizeof(ystats));
ystats_addr = BAR0_MAP_REG_YSDM_RAM +
YSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id);
qed_memcpy_from(p_hwfn, p_ptt, &ystats, ystats_addr, sizeof(ystats));
p_stats->iscsi_tx_data_pdu_cnt =
HILO_64_REGPAIR(ystats.iscsi_tx_data_pdu_cnt);
p_stats->iscsi_tx_r2t_pdu_cnt =
HILO_64_REGPAIR(ystats.iscsi_tx_r2t_pdu_cnt);
p_stats->iscsi_tx_total_pdu_cnt =
HILO_64_REGPAIR(ystats.iscsi_tx_total_pdu_cnt);
}
static void _qed_iscsi_get_pstats(struct qed_hwfn *p_hwfn,
struct qed_ptt *p_ptt,
struct qed_iscsi_stats *p_stats)
{
struct pstorm_iscsi_stats_drv pstats;
u32 pstats_addr;
memset(&pstats, 0, sizeof(pstats));
pstats_addr = BAR0_MAP_REG_PSDM_RAM +
PSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id);
qed_memcpy_from(p_hwfn, p_ptt, &pstats, pstats_addr, sizeof(pstats));
p_stats->iscsi_tx_bytes_cnt =
HILO_64_REGPAIR(pstats.iscsi_tx_bytes_cnt);
p_stats->iscsi_tx_packet_cnt =
HILO_64_REGPAIR(pstats.iscsi_tx_packet_cnt);
}
static int qed_iscsi_get_stats(struct qed_hwfn *p_hwfn,
struct qed_iscsi_stats *stats)
{
struct qed_ptt *p_ptt;
memset(stats, 0, sizeof(*stats));
p_ptt = qed_ptt_acquire(p_hwfn);
if (!p_ptt) {
DP_ERR(p_hwfn, "Failed to acquire ptt\n");
return -EAGAIN;
}
_qed_iscsi_get_tstats(p_hwfn, p_ptt, stats);
_qed_iscsi_get_mstats(p_hwfn, p_ptt, stats);
_qed_iscsi_get_ustats(p_hwfn, p_ptt, stats);
_qed_iscsi_get_xstats(p_hwfn, p_ptt, stats);
_qed_iscsi_get_ystats(p_hwfn, p_ptt, stats);
_qed_iscsi_get_pstats(p_hwfn, p_ptt, stats);
qed_ptt_release(p_hwfn, p_ptt);
return 0;
}
struct qed_hash_iscsi_con {
struct hlist_node node;
struct qed_iscsi_conn *con;
};
static int qed_fill_iscsi_dev_info(struct qed_dev *cdev,
struct qed_dev_iscsi_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_iscsi_get_primary_bdq_prod(hwfn, BDQ_ID_RQ);
info->secondary_bdq_rq_addr =
qed_iscsi_get_secondary_bdq_prod(hwfn, BDQ_ID_RQ);
return rc;
}
static void qed_register_iscsi_ops(struct qed_dev *cdev,
struct qed_iscsi_cb_ops *ops, void *cookie)
{
cdev->protocol_ops.iscsi = ops;
cdev->ops_cookie = cookie;
}
static struct qed_hash_iscsi_con *qed_iscsi_get_hash(struct qed_dev *cdev,
u32 handle)
{
struct qed_hash_iscsi_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_iscsi_stop(struct qed_dev *cdev)
{
int rc;
if (!(cdev->flags & QED_FLAG_STORAGE_STARTED)) {
DP_NOTICE(cdev, "iscsi already stopped\n");
return 0;
}
if (!hash_empty(cdev->connections)) {
DP_NOTICE(cdev,
"Can't stop iscsi - not all connections were returned\n");
return -EINVAL;
}
/* Stop the iscsi */
rc = qed_sp_iscsi_func_stop(QED_LEADING_HWFN(cdev),
QED_SPQ_MODE_EBLOCK, NULL);
cdev->flags &= ~QED_FLAG_STORAGE_STARTED;
return rc;
}
static int qed_iscsi_start(struct qed_dev *cdev,
struct qed_iscsi_tid *tasks,
void *event_context,
iscsi_event_cb_t async_event_cb)
{
int rc;
struct qed_tid_mem *tid_info;
if (cdev->flags & QED_FLAG_STORAGE_STARTED) {
DP_NOTICE(cdev, "iscsi already started;\n");
return 0;
}
rc = qed_sp_iscsi_func_start(QED_LEADING_HWFN(cdev),
QED_SPQ_MODE_EBLOCK, NULL, event_context,
async_event_cb);
if (rc) {
DP_NOTICE(cdev, "Failed to start iscsi\n");
return rc;
}
cdev->flags |= QED_FLAG_STORAGE_STARTED;
hash_init(cdev->connections);
if (!tasks)
return 0;
tid_info = kzalloc(sizeof(*tid_info), GFP_KERNEL);
if (!tid_info) {
qed_iscsi_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_iscsi_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_ISCSI * sizeof(u8 *));
kfree(tid_info);
return 0;
}
static int qed_iscsi_acquire_conn(struct qed_dev *cdev,
u32 *handle,
u32 *fw_cid, void __iomem **p_doorbell)
{
struct qed_hash_iscsi_con *hash_con;
int rc;
/* Allocate a hashed connection */
hash_con = kzalloc(sizeof(*hash_con), GFP_ATOMIC);
if (!hash_con)
return -ENOMEM;
/* Acquire the connection */
rc = qed_iscsi_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_iscsi_get_db_addr(QED_LEADING_HWFN(cdev),
*handle);
return 0;
}
static int qed_iscsi_release_conn(struct qed_dev *cdev, u32 handle)
{
struct qed_hash_iscsi_con *hash_con;
hash_con = qed_iscsi_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_iscsi_release_connection(QED_LEADING_HWFN(cdev), hash_con->con);
kfree(hash_con);
return 0;
}
static int qed_iscsi_offload_conn(struct qed_dev *cdev,
u32 handle,
struct qed_iscsi_params_offload *conn_info)
{
struct qed_hash_iscsi_con *hash_con;
struct qed_iscsi_conn *con;
hash_con = qed_iscsi_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;
ether_addr_copy(con->local_mac, conn_info->src.mac);
ether_addr_copy(con->remote_mac, conn_info->dst.mac);
memcpy(con->local_ip, conn_info->src.ip, sizeof(con->local_ip));
memcpy(con->remote_ip, conn_info->dst.ip, sizeof(con->remote_ip));
con->local_port = conn_info->src.port;
con->remote_port = conn_info->dst.port;
con->layer_code = conn_info->layer_code;
con->sq_pbl_addr = conn_info->sq_pbl_addr;
con->initial_ack = conn_info->initial_ack;
con->vlan_id = conn_info->vlan_id;
con->tcp_flags = conn_info->tcp_flags;
con->ip_version = conn_info->ip_version;
con->default_cq = conn_info->default_cq;
con->ka_max_probe_cnt = conn_info->ka_max_probe_cnt;
con->dup_ack_theshold = conn_info->dup_ack_theshold;
con->rcv_next = conn_info->rcv_next;
con->snd_una = conn_info->snd_una;
con->snd_next = conn_info->snd_next;
con->snd_max = conn_info->snd_max;
con->snd_wnd = conn_info->snd_wnd;
con->rcv_wnd = conn_info->rcv_wnd;
con->snd_wl1 = conn_info->snd_wl1;
con->cwnd = conn_info->cwnd;
con->ss_thresh = conn_info->ss_thresh;
con->srtt = conn_info->srtt;
con->rtt_var = conn_info->rtt_var;
con->ts_time = conn_info->ts_time;
con->ts_recent = conn_info->ts_recent;
con->ts_recent_age = conn_info->ts_recent_age;
con->total_rt = conn_info->total_rt;
con->ka_timeout_delta = conn_info->ka_timeout_delta;
con->rt_timeout_delta = conn_info->rt_timeout_delta;
con->dup_ack_cnt = conn_info->dup_ack_cnt;
con->snd_wnd_probe_cnt = conn_info->snd_wnd_probe_cnt;
con->ka_probe_cnt = conn_info->ka_probe_cnt;
con->rt_cnt = conn_info->rt_cnt;
con->flow_label = conn_info->flow_label;
con->ka_timeout = conn_info->ka_timeout;
con->ka_interval = conn_info->ka_interval;
con->max_rt_time = conn_info->max_rt_time;
con->initial_rcv_wnd = conn_info->initial_rcv_wnd;
con->ttl = conn_info->ttl;
con->tos_or_tc = conn_info->tos_or_tc;
con->remote_port = conn_info->remote_port;
con->local_port = conn_info->local_port;
con->mss = conn_info->mss;
con->snd_wnd_scale = conn_info->snd_wnd_scale;
con->rcv_wnd_scale = conn_info->rcv_wnd_scale;
con->ts_ticks_per_second = conn_info->ts_ticks_per_second;
con->da_timeout_value = conn_info->da_timeout_value;
con->ack_frequency = conn_info->ack_frequency;
/* Set default values on other connection fields */
con->offl_flags = 0x1;
return qed_sp_iscsi_conn_offload(QED_LEADING_HWFN(cdev), con,
QED_SPQ_MODE_EBLOCK, NULL);
}
static int qed_iscsi_update_conn(struct qed_dev *cdev,
u32 handle,
struct qed_iscsi_params_update *conn_info)
{
struct qed_hash_iscsi_con *hash_con;
struct qed_iscsi_conn *con;
hash_con = qed_iscsi_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->update_flag = conn_info->update_flag;
con->max_seq_size = conn_info->max_seq_size;
con->max_recv_pdu_length = conn_info->max_recv_pdu_length;
con->max_send_pdu_length = conn_info->max_send_pdu_length;
con->first_seq_length = conn_info->first_seq_length;
con->exp_stat_sn = conn_info->exp_stat_sn;
return qed_sp_iscsi_conn_update(QED_LEADING_HWFN(cdev), con,
QED_SPQ_MODE_EBLOCK, NULL);
}
static int qed_iscsi_clear_conn_sq(struct qed_dev *cdev, u32 handle)
{
struct qed_hash_iscsi_con *hash_con;
hash_con = qed_iscsi_get_hash(cdev, handle);
if (!hash_con) {
DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
handle);
return -EINVAL;
}
return qed_sp_iscsi_conn_clear_sq(QED_LEADING_HWFN(cdev),
hash_con->con,
QED_SPQ_MODE_EBLOCK, NULL);
}
static int qed_iscsi_destroy_conn(struct qed_dev *cdev,
u32 handle, u8 abrt_conn)
{
struct qed_hash_iscsi_con *hash_con;
hash_con = qed_iscsi_get_hash(cdev, handle);
if (!hash_con) {
DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
handle);
return -EINVAL;
}
hash_con->con->abortive_dsconnect = abrt_conn;
return qed_sp_iscsi_conn_terminate(QED_LEADING_HWFN(cdev),
hash_con->con,
QED_SPQ_MODE_EBLOCK, NULL);
}
static int qed_iscsi_stats(struct qed_dev *cdev, struct qed_iscsi_stats *stats)
{
return qed_iscsi_get_stats(QED_LEADING_HWFN(cdev), stats);
}
static const struct qed_iscsi_ops qed_iscsi_ops_pass = {
.common = &qed_common_ops_pass,
.ll2 = &qed_ll2_ops_pass,
.fill_dev_info = &qed_fill_iscsi_dev_info,
.register_ops = &qed_register_iscsi_ops,
.start = &qed_iscsi_start,
.stop = &qed_iscsi_stop,
.acquire_conn = &qed_iscsi_acquire_conn,
.release_conn = &qed_iscsi_release_conn,
.offload_conn = &qed_iscsi_offload_conn,
.update_conn = &qed_iscsi_update_conn,
.destroy_conn = &qed_iscsi_destroy_conn,
.clear_sq = &qed_iscsi_clear_conn_sq,
.get_stats = &qed_iscsi_stats,
};
const struct qed_iscsi_ops *qed_get_iscsi_ops()
{
return &qed_iscsi_ops_pass;
}
EXPORT_SYMBOL(qed_get_iscsi_ops);
void qed_put_iscsi_ops(void)
{
}
EXPORT_SYMBOL(qed_put_iscsi_ops);
drivers/net/ethernet/qlogic/qed/qed_iscsi.h 0 → 100644
View file @ fc831825
/* QLogic qed NIC Driver
* Copyright (c) 2015 QLogic Corporation
*
* 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.
*/
#ifndef _QED_ISCSI_H
#define _QED_ISCSI_H
#include <linux/types.h>
#include <linux/list.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
#include <linux/qed/tcp_common.h>
#include <linux/qed/qed_iscsi_if.h>
#include <linux/qed/qed_chain.h>
#include "qed.h"
#include "qed_hsi.h"
#include "qed_mcp.h"
#include "qed_sp.h"
struct qed_iscsi_info {
spinlock_t lock; /* Connection resources. */
struct list_head free_list;
u16 max_num_outstanding_tasks;
void *event_context;
iscsi_event_cb_t event_cb;
};
#ifdef CONFIG_QED_LL2
extern const struct qed_ll2_ops qed_ll2_ops_pass;
#endif
#if IS_ENABLED(CONFIG_QED_ISCSI)
struct qed_iscsi_info *qed_iscsi_alloc(struct qed_hwfn *p_hwfn);
void qed_iscsi_setup(struct qed_hwfn *p_hwfn,
struct qed_iscsi_info *p_iscsi_info);
void qed_iscsi_free(struct qed_hwfn *p_hwfn,
struct qed_iscsi_info *p_iscsi_info);
#else /* IS_ENABLED(CONFIG_QED_ISCSI) */
static inline struct qed_iscsi_info *qed_iscsi_alloc(
struct qed_hwfn *p_hwfn) { return NULL; }
static inline void qed_iscsi_setup(struct qed_hwfn *p_hwfn,
struct qed_iscsi_info *p_iscsi_info) {}
static inline void qed_iscsi_free(struct qed_hwfn *p_hwfn,
struct qed_iscsi_info *p_iscsi_info) {}
#endif /* IS_ENABLED(CONFIG_QED_ISCSI) */
#endif
drivers/net/ethernet/qlogic/qed/qed_ll2.c
View file @ fc831825
...@@ -1517,6 +1517,7 @@ static int qed_ll2_start(struct qed_dev *cdev, struct qed_ll2_params *params) ...@@ -1517,6 +1517,7 @@ static int qed_ll2_start(struct qed_dev *cdev, struct qed_ll2_params *params)
enum qed_ll2_conn_type conn_type; enum qed_ll2_conn_type conn_type;
struct qed_ptt *p_ptt; struct qed_ptt *p_ptt;
int rc, i; int rc, i;
u8 gsi_enable = 1;
/* Initialize LL2 locks & lists */ /* Initialize LL2 locks & lists */
INIT_LIST_HEAD(&cdev->ll2->list); INIT_LIST_HEAD(&cdev->ll2->list);
...@@ -1548,6 +1549,7 @@ static int qed_ll2_start(struct qed_dev *cdev, struct qed_ll2_params *params) ...@@ -1548,6 +1549,7 @@ static int qed_ll2_start(struct qed_dev *cdev, struct qed_ll2_params *params)
switch (QED_LEADING_HWFN(cdev)->hw_info.personality) { switch (QED_LEADING_HWFN(cdev)->hw_info.personality) {
case QED_PCI_ISCSI: case QED_PCI_ISCSI:
conn_type = QED_LL2_TYPE_ISCSI; conn_type = QED_LL2_TYPE_ISCSI;
gsi_enable = 0;
break; break;
case QED_PCI_ETH_ROCE: case QED_PCI_ETH_ROCE:
conn_type = QED_LL2_TYPE_ROCE; conn_type = QED_LL2_TYPE_ROCE;
...@@ -1564,7 +1566,7 @@ static int qed_ll2_start(struct qed_dev *cdev, struct qed_ll2_params *params) ...@@ -1564,7 +1566,7 @@ static int qed_ll2_start(struct qed_dev *cdev, struct qed_ll2_params *params)
ll2_info.rx_vlan_removal_en = params->rx_vlan_stripping; ll2_info.rx_vlan_removal_en = params->rx_vlan_stripping;
ll2_info.tx_tc = 0; ll2_info.tx_tc = 0;
ll2_info.tx_dest = CORE_TX_DEST_NW; ll2_info.tx_dest = CORE_TX_DEST_NW;
ll2_info.gsi_enable = 1; ll2_info.gsi_enable = gsi_enable;
rc = qed_ll2_acquire_connection(QED_LEADING_HWFN(cdev), &ll2_info, rc = qed_ll2_acquire_connection(QED_LEADING_HWFN(cdev), &ll2_info,
QED_LL2_RX_SIZE, QED_LL2_TX_SIZE, QED_LL2_RX_SIZE, QED_LL2_TX_SIZE,
......
drivers/net/ethernet/qlogic/qed/qed_reg_addr.h
View file @ fc831825
...@@ -82,6 +82,8 @@ ...@@ -82,6 +82,8 @@
0x1c80000UL 0x1c80000UL
#define BAR0_MAP_REG_XSDM_RAM \ #define BAR0_MAP_REG_XSDM_RAM \
0x1e00000UL 0x1e00000UL
#define BAR0_MAP_REG_YSDM_RAM \
0x1e80000UL
#define NIG_REG_RX_LLH_BRB_GATE_DNTFWD_PERPF \ #define NIG_REG_RX_LLH_BRB_GATE_DNTFWD_PERPF \
0x5011f4UL 0x5011f4UL
#define PRS_REG_SEARCH_TCP \ #define PRS_REG_SEARCH_TCP \
......
drivers/net/ethernet/qlogic/qed/qed_spq.c
View file @ fc831825
...@@ -24,6 +24,7 @@ ...@@ -24,6 +24,7 @@
#include "qed_hsi.h" #include "qed_hsi.h"
#include "qed_hw.h" #include "qed_hw.h"
#include "qed_int.h" #include "qed_int.h"
#include "qed_iscsi.h"
#include "qed_mcp.h" #include "qed_mcp.h"
#include "qed_reg_addr.h" #include "qed_reg_addr.h"
#include "qed_sp.h" #include "qed_sp.h"
...@@ -277,6 +278,20 @@ qed_async_event_completion(struct qed_hwfn *p_hwfn, ...@@ -277,6 +278,20 @@ qed_async_event_completion(struct qed_hwfn *p_hwfn,
return qed_sriov_eqe_event(p_hwfn, return qed_sriov_eqe_event(p_hwfn,
p_eqe->opcode, p_eqe->opcode,
p_eqe->echo, &p_eqe->data); p_eqe->echo, &p_eqe->data);
case PROTOCOLID_ISCSI:
if (!IS_ENABLED(CONFIG_QED_ISCSI))
return -EINVAL;
if (p_hwfn->p_iscsi_info->event_cb) {
struct qed_iscsi_info *p_iscsi = p_hwfn->p_iscsi_info;
return p_iscsi->event_cb(p_iscsi->event_context,
p_eqe->opcode, &p_eqe->data);
} else {
DP_NOTICE(p_hwfn,
"iSCSI async completion is not set\n");
return -EINVAL;
}
default: default:
DP_NOTICE(p_hwfn, DP_NOTICE(p_hwfn,
"Unknown Async completion for protocol: %d\n", "Unknown Async completion for protocol: %d\n",
......
include/linux/qed/qed_if.h
View file @ fc831825
...@@ -166,6 +166,7 @@ struct qed_iscsi_pf_params { ...@@ -166,6 +166,7 @@ struct qed_iscsi_pf_params {
u32 max_cwnd; u32 max_cwnd;
u16 cq_num_entries; u16 cq_num_entries;
u16 cmdq_num_entries; u16 cmdq_num_entries;
u32 two_msl_timer;
u16 dup_ack_threshold; u16 dup_ack_threshold;
u16 tx_sws_timer; u16 tx_sws_timer;
u16 min_rto; u16 min_rto;
...@@ -275,6 +276,7 @@ struct qed_dev_info { ...@@ -275,6 +276,7 @@ struct qed_dev_info {
enum qed_sb_type { enum qed_sb_type {
QED_SB_TYPE_L2_QUEUE, QED_SB_TYPE_L2_QUEUE,
QED_SB_TYPE_CNQ, QED_SB_TYPE_CNQ,
QED_SB_TYPE_STORAGE,
}; };
enum qed_protocol { enum qed_protocol {
......
include/linux/qed/qed_iscsi_if.h 0 → 100644
View file @ fc831825
/* QLogic qed NIC Driver
* Copyright (c) 2015 QLogic Corporation
*
* 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.
*/
#ifndef _QED_ISCSI_IF_H
#define _QED_ISCSI_IF_H
#include <linux/types.h>
#include <linux/qed/qed_if.h>
typedef int (*iscsi_event_cb_t) (void *context,
u8 fw_event_code, void *fw_handle);
struct qed_iscsi_stats {
u64 iscsi_rx_bytes_cnt;
u64 iscsi_rx_packet_cnt;
u64 iscsi_rx_new_ooo_isle_events_cnt;
u32 iscsi_cmdq_threshold_cnt;
u32 iscsi_rq_threshold_cnt;
u32 iscsi_immq_threshold_cnt;
u64 iscsi_rx_dropped_pdus_task_not_valid;
u64 iscsi_rx_data_pdu_cnt;
u64 iscsi_rx_r2t_pdu_cnt;
u64 iscsi_rx_total_pdu_cnt;
u64 iscsi_tx_go_to_slow_start_event_cnt;
u64 iscsi_tx_fast_retransmit_event_cnt;
u64 iscsi_tx_data_pdu_cnt;
u64 iscsi_tx_r2t_pdu_cnt;
u64 iscsi_tx_total_pdu_cnt;
u64 iscsi_tx_bytes_cnt;
u64 iscsi_tx_packet_cnt;
};
struct qed_dev_iscsi_info {
struct qed_dev_info common;
void __iomem *primary_dbq_rq_addr;
void __iomem *secondary_bdq_rq_addr;
};
struct qed_iscsi_id_params {
u8 mac[ETH_ALEN];
u32 ip[4];
u16 port;
};
struct qed_iscsi_params_offload {
u8 layer_code;
dma_addr_t sq_pbl_addr;
u32 initial_ack;
struct qed_iscsi_id_params src;
struct qed_iscsi_id_params dst;
u16 vlan_id;
u8 tcp_flags;
u8 ip_version;
u8 default_cq;
u8 ka_max_probe_cnt;
u8 dup_ack_theshold;
u32 rcv_next;
u32 snd_una;
u32 snd_next;
u32 snd_max;
u32 snd_wnd;
u32 rcv_wnd;
u32 snd_wl1;
u32 cwnd;
u32 ss_thresh;
u16 srtt;
u16 rtt_var;
u32 ts_time;
u32 ts_recent;
u32 ts_recent_age;
u32 total_rt;
u32 ka_timeout_delta;
u32 rt_timeout_delta;
u8 dup_ack_cnt;
u8 snd_wnd_probe_cnt;
u8 ka_probe_cnt;
u8 rt_cnt;
u32 flow_label;
u32 ka_timeout;
u32 ka_interval;
u32 max_rt_time;
u32 initial_rcv_wnd;
u8 ttl;
u8 tos_or_tc;
u16 remote_port;
u16 local_port;
u16 mss;
u8 snd_wnd_scale;
u8 rcv_wnd_scale;
u32 ts_ticks_per_second;
u16 da_timeout_value;
u8 ack_frequency;
};
struct qed_iscsi_params_update {
u8 update_flag;
#define QED_ISCSI_CONN_HD_EN BIT(0)
#define QED_ISCSI_CONN_DD_EN BIT(1)
#define QED_ISCSI_CONN_INITIAL_R2T BIT(2)
#define QED_ISCSI_CONN_IMMEDIATE_DATA BIT(3)
u32 max_seq_size;
u32 max_recv_pdu_length;
u32 max_send_pdu_length;
u32 first_seq_length;
u32 exp_stat_sn;
};
#define MAX_TID_BLOCKS_ISCSI (512)
struct qed_iscsi_tid {
u32 size; /* In bytes per task */
u32 num_tids_per_block;
u8 *blocks[MAX_TID_BLOCKS_ISCSI];
};
struct qed_iscsi_cb_ops {
struct qed_common_cb_ops common;
};
/**
* struct qed_iscsi_ops - qed iSCSI operations.
* @common: common operations pointer
* @ll2: light L2 operations pointer
* @fill_dev_info: fills iSCSI specific information
* @param cdev
* @param info
* @return 0 on sucesss, otherwise error value.
* @register_ops: register iscsi operations
* @param cdev
* @param ops - specified using qed_iscsi_cb_ops
* @param cookie - driver private
* @start: iscsi in FW
* @param cdev
* @param tasks - qed will fill information about tasks
* return 0 on success, otherwise error value.
* @stop: iscsi in FW
* @param cdev
* return 0 on success, otherwise error value.
* @acquire_conn: acquire a new iscsi connection
* @param cdev
* @param handle - qed will fill handle that should be
* used henceforth as identifier of the
* connection.
* @param p_doorbell - qed will fill the address of the
* doorbell.
* @return 0 on sucesss, otherwise error value.
* @release_conn: release a previously acquired iscsi connection
* @param cdev
* @param handle - the connection handle.
* @return 0 on success, otherwise error value.
* @offload_conn: configures an offloaded connection
* @param cdev
* @param handle - the connection handle.
* @param conn_info - the configuration to use for the
* offload.
* @return 0 on success, otherwise error value.
* @update_conn: updates an offloaded connection
* @param cdev
* @param handle - the connection handle.
* @param conn_info - the configuration to use for the
* offload.
* @return 0 on success, otherwise error value.
* @destroy_conn: stops an offloaded connection
* @param cdev
* @param handle - the connection handle.
* @return 0 on success, otherwise error value.
* @clear_sq: clear all task in sq
* @param cdev
* @param handle - the connection handle.
* @return 0 on success, otherwise error value.
* @get_stats: iSCSI related statistics
* @param cdev
* @param stats - pointer to struck that would be filled
* we stats
* @return 0 on success, error otherwise.
*/
struct qed_iscsi_ops {
const struct qed_common_ops *common;
const struct qed_ll2_ops *ll2;
int (*fill_dev_info)(struct qed_dev *cdev,
struct qed_dev_iscsi_info *info);
void (*register_ops)(struct qed_dev *cdev,
struct qed_iscsi_cb_ops *ops, void *cookie);
int (*start)(struct qed_dev *cdev,
struct qed_iscsi_tid *tasks,
void *event_context, iscsi_event_cb_t async_event_cb);
int (*stop)(struct qed_dev *cdev);
int (*acquire_conn)(struct qed_dev *cdev,
u32 *handle,
u32 *fw_cid, void __iomem **p_doorbell);
int (*release_conn)(struct qed_dev *cdev, u32 handle);
int (*offload_conn)(struct qed_dev *cdev,
u32 handle,
struct qed_iscsi_params_offload *conn_info);
int (*update_conn)(struct qed_dev *cdev,
u32 handle,
struct qed_iscsi_params_update *conn_info);
int (*destroy_conn)(struct qed_dev *cdev, u32 handle, u8 abrt_conn);
int (*clear_sq)(struct qed_dev *cdev, u32 handle);
int (*get_stats)(struct qed_dev *cdev,
struct qed_iscsi_stats *stats);
};
const struct qed_iscsi_ops *qed_get_iscsi_ops(void);
void qed_put_iscsi_ops(void);
#endif
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