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qed: Add support for hardware offloaded iSCSI.

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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: Arun Easi <arun.easi@cavium.com>
Signed-off-by: Yuval Mintz <yuval.mintz@cavium.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Yuval Mintz 2016-12-01 00:21:06 -08:00 committed by David S. Miller
parent b14945ac3e
commit fc831825f9
11 changed files with 1602 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/net/ethernet/qlogic/Kconfig
View File

@ -110,4 +110,7 @@ config QEDE
config QED_RDMA
bool
config QED_ISCSI
bool
endif # NET_VENDOR_QLOGIC

1
drivers/net/ethernet/qlogic/qed/Makefile
View File

@ -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_LL2) += qed_ll2.o
qed-$(CONFIG_QED_RDMA) += qed_roce.o
qed-$(CONFIG_QED_ISCSI) += qed_iscsi.o

7
drivers/net/ethernet/qlogic/qed/qed.h
View File

@ -35,6 +35,7 @@ extern const struct qed_common_ops qed_common_ops_pass;
#define QED_WFQ_UNIT 100
#define ISCSI_BDQ_ID(_port_id) (_port_id)
#define QED_WID_SIZE (1024)
#define QED_PF_DEMS_SIZE (4)
@ -383,6 +384,7 @@ struct qed_hwfn {
bool using_ll2;
struct qed_ll2_info *p_ll2_info;
struct qed_rdma_info *p_rdma_info;
struct qed_iscsi_info *p_iscsi_info;
struct qed_pf_params pf_params;
bool b_rdma_enabled_in_prs;
@ -581,6 +583,8 @@ struct qed_dev {
/* Linux specific here */
struct qede_dev *edev;
struct pci_dev *pdev;
u32 flags;
#define QED_FLAG_STORAGE_STARTED (BIT(0))
int msg_enable;
struct pci_params pci_params;
@ -594,6 +598,7 @@ struct qed_dev {
union {
struct qed_common_cb_ops *common;
struct qed_eth_cb_ops *eth;
struct qed_iscsi_cb_ops *iscsi;
} protocol_ops;
void *ops_cookie;
@ -603,7 +608,7 @@ struct qed_dev {
struct qed_cb_ll2_info *ll2;
u8 ll2_mac_address[ETH_ALEN];
#endif
DECLARE_HASHTABLE(connections, 10);
const struct firmware *firmware;
u32 rdma_max_sge;

12
drivers/net/ethernet/qlogic/qed/qed_dev.c
View File

@ -29,6 +29,7 @@
#include "qed_hw.h"
#include "qed_init_ops.h"
#include "qed_int.h"
#include "qed_iscsi.h"
#include "qed_ll2.h"
#include "qed_mcp.h"
#include "qed_reg_addr.h"
@ -146,6 +147,8 @@ void qed_resc_free(struct qed_dev *cdev)
#ifdef CONFIG_QED_LL2
qed_ll2_free(p_hwfn, p_hwfn->p_ll2_info);
#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_dmae_info_free(p_hwfn);
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)
int qed_resc_alloc(struct qed_dev *cdev)
{
struct qed_iscsi_info *p_iscsi_info;
#ifdef CONFIG_QED_LL2
struct qed_ll2_info *p_ll2_info;
#endif
@ -507,6 +511,12 @@ int qed_resc_alloc(struct qed_dev *cdev)
p_hwfn->p_ll2_info = p_ll2_info;
}
#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 */
rc = qed_dmae_info_alloc(p_hwfn);
@ -560,6 +570,8 @@ void qed_resc_setup(struct qed_dev *cdev)
if (p_hwfn->using_ll2)
qed_ll2_setup(p_hwfn, p_hwfn->p_ll2_info);
#endif
if (p_hwfn->hw_info.personality == QED_PCI_ISCSI)
qed_iscsi_setup(p_hwfn, p_hwfn->p_iscsi_info);
}
}

1277
drivers/net/ethernet/qlogic/qed/qed_iscsi.c Normal file
View File

File diff suppressed because it is too large Load Diff

52
drivers/net/ethernet/qlogic/qed/qed_iscsi.h Normal file
View File

@ -0,0 +1,52 @@
/* 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

4
drivers/net/ethernet/qlogic/qed/qed_ll2.c
View File

@ -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;
struct qed_ptt *p_ptt;
int rc, i;
u8 gsi_enable = 1;
/* Initialize LL2 locks & lists */
INIT_LIST_HEAD(&cdev->ll2->list);
@ -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) {
case QED_PCI_ISCSI:
conn_type = QED_LL2_TYPE_ISCSI;
gsi_enable = 0;
break;
case QED_PCI_ETH_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)
ll2_info.rx_vlan_removal_en = params->rx_vlan_stripping;
ll2_info.tx_tc = 0;
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,
QED_LL2_RX_SIZE, QED_LL2_TX_SIZE,

2
drivers/net/ethernet/qlogic/qed/qed_reg_addr.h
View File

@ -82,6 +82,8 @@
0x1c80000UL
#define BAR0_MAP_REG_XSDM_RAM \
0x1e00000UL
#define BAR0_MAP_REG_YSDM_RAM \
0x1e80000UL
#define NIG_REG_RX_LLH_BRB_GATE_DNTFWD_PERPF \
0x5011f4UL
#define PRS_REG_SEARCH_TCP \

15
drivers/net/ethernet/qlogic/qed/qed_spq.c
View File

@ -24,6 +24,7 @@
#include "qed_hsi.h"
#include "qed_hw.h"
#include "qed_int.h"
#include "qed_iscsi.h"
#include "qed_mcp.h"
#include "qed_reg_addr.h"
#include "qed_sp.h"
@ -277,6 +278,20 @@ qed_async_event_completion(struct qed_hwfn *p_hwfn,
return qed_sriov_eqe_event(p_hwfn,
p_eqe->opcode,
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:
DP_NOTICE(p_hwfn,
"Unknown Async completion for protocol: %d\n",

2
include/linux/qed/qed_if.h
View File

@ -166,6 +166,7 @@ struct qed_iscsi_pf_params {
u32 max_cwnd;
u16 cq_num_entries;
u16 cmdq_num_entries;
u32 two_msl_timer;
u16 dup_ack_threshold;
u16 tx_sws_timer;
u16 min_rto;
@ -275,6 +276,7 @@ struct qed_dev_info {
enum qed_sb_type {
QED_SB_TYPE_L2_QUEUE,
QED_SB_TYPE_CNQ,
QED_SB_TYPE_STORAGE,
};
enum qed_protocol {

229
include/linux/qed/qed_iscsi_if.h Normal file
View File

@ -0,0 +1,229 @@
/* 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