forked from Minki/linux
f9bdc3da4c
Signed-off-by: Abhijeet Joglekar <abjoglek@cisco.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
266 lines
8.2 KiB
C
266 lines
8.2 KiB
C
/*
|
|
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
|
|
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
|
|
*
|
|
* This program is free software; you may redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; version 2 of the License.
|
|
*
|
|
* 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.
|
|
*/
|
|
#ifndef _FNIC_H_
|
|
#define _FNIC_H_
|
|
|
|
#include <linux/interrupt.h>
|
|
#include <linux/netdevice.h>
|
|
#include <linux/workqueue.h>
|
|
#include <scsi/libfc.h>
|
|
#include "fnic_io.h"
|
|
#include "fnic_res.h"
|
|
#include "vnic_dev.h"
|
|
#include "vnic_wq.h"
|
|
#include "vnic_rq.h"
|
|
#include "vnic_cq.h"
|
|
#include "vnic_wq_copy.h"
|
|
#include "vnic_intr.h"
|
|
#include "vnic_stats.h"
|
|
#include "vnic_scsi.h"
|
|
|
|
#define DRV_NAME "fnic"
|
|
#define DRV_DESCRIPTION "Cisco FCoE HBA Driver"
|
|
#define DRV_VERSION "1.0.0.1121"
|
|
#define PFX DRV_NAME ": "
|
|
#define DFX DRV_NAME "%d: "
|
|
|
|
#define DESC_CLEAN_LOW_WATERMARK 8
|
|
#define FNIC_MAX_IO_REQ 2048 /* scsi_cmnd tag map entries */
|
|
#define FNIC_IO_LOCKS 64 /* IO locks: power of 2 */
|
|
#define FNIC_DFLT_QUEUE_DEPTH 32
|
|
#define FNIC_STATS_RATE_LIMIT 4 /* limit rate at which stats are pulled up */
|
|
#define FNIC_MAX_CMD_LEN 16 /* Supported CDB length */
|
|
/*
|
|
* Tag bits used for special requests.
|
|
*/
|
|
#define BIT(nr) (1UL << (nr))
|
|
#define FNIC_TAG_ABORT BIT(30) /* tag bit indicating abort */
|
|
#define FNIC_TAG_DEV_RST BIT(29) /* indicates device reset */
|
|
#define FNIC_TAG_MASK (BIT(24) - 1) /* mask for lookup */
|
|
#define FNIC_NO_TAG -1
|
|
|
|
/*
|
|
* Usage of the scsi_cmnd scratchpad.
|
|
* These fields are locked by the hashed io_req_lock.
|
|
*/
|
|
#define CMD_SP(Cmnd) ((Cmnd)->SCp.ptr)
|
|
#define CMD_STATE(Cmnd) ((Cmnd)->SCp.phase)
|
|
#define CMD_ABTS_STATUS(Cmnd) ((Cmnd)->SCp.Message)
|
|
#define CMD_LR_STATUS(Cmnd) ((Cmnd)->SCp.have_data_in)
|
|
#define CMD_TAG(Cmnd) ((Cmnd)->SCp.sent_command)
|
|
|
|
#define FCPIO_INVALID_CODE 0x100 /* hdr_status value unused by firmware */
|
|
|
|
#define FNIC_LUN_RESET_TIMEOUT 10000 /* mSec */
|
|
#define FNIC_HOST_RESET_TIMEOUT 10000 /* mSec */
|
|
#define FNIC_RMDEVICE_TIMEOUT 1000 /* mSec */
|
|
#define FNIC_HOST_RESET_SETTLE_TIME 30 /* Sec */
|
|
|
|
#define FNIC_MAX_FCP_TARGET 256
|
|
|
|
extern unsigned int fnic_log_level;
|
|
|
|
#define FNIC_MAIN_LOGGING 0x01
|
|
#define FNIC_FCS_LOGGING 0x02
|
|
#define FNIC_SCSI_LOGGING 0x04
|
|
#define FNIC_ISR_LOGGING 0x08
|
|
|
|
#define FNIC_CHECK_LOGGING(LEVEL, CMD) \
|
|
do { \
|
|
if (unlikely(fnic_log_level & LEVEL)) \
|
|
do { \
|
|
CMD; \
|
|
} while (0); \
|
|
} while (0)
|
|
|
|
#define FNIC_MAIN_DBG(kern_level, host, fmt, args...) \
|
|
FNIC_CHECK_LOGGING(FNIC_MAIN_LOGGING, \
|
|
shost_printk(kern_level, host, fmt, ##args);)
|
|
|
|
#define FNIC_FCS_DBG(kern_level, host, fmt, args...) \
|
|
FNIC_CHECK_LOGGING(FNIC_FCS_LOGGING, \
|
|
shost_printk(kern_level, host, fmt, ##args);)
|
|
|
|
#define FNIC_SCSI_DBG(kern_level, host, fmt, args...) \
|
|
FNIC_CHECK_LOGGING(FNIC_SCSI_LOGGING, \
|
|
shost_printk(kern_level, host, fmt, ##args);)
|
|
|
|
#define FNIC_ISR_DBG(kern_level, host, fmt, args...) \
|
|
FNIC_CHECK_LOGGING(FNIC_ISR_LOGGING, \
|
|
shost_printk(kern_level, host, fmt, ##args);)
|
|
|
|
extern const char *fnic_state_str[];
|
|
|
|
enum fnic_intx_intr_index {
|
|
FNIC_INTX_WQ_RQ_COPYWQ,
|
|
FNIC_INTX_ERR,
|
|
FNIC_INTX_NOTIFY,
|
|
FNIC_INTX_INTR_MAX,
|
|
};
|
|
|
|
enum fnic_msix_intr_index {
|
|
FNIC_MSIX_RQ,
|
|
FNIC_MSIX_WQ,
|
|
FNIC_MSIX_WQ_COPY,
|
|
FNIC_MSIX_ERR_NOTIFY,
|
|
FNIC_MSIX_INTR_MAX,
|
|
};
|
|
|
|
struct fnic_msix_entry {
|
|
int requested;
|
|
char devname[IFNAMSIZ];
|
|
irqreturn_t (*isr)(int, void *);
|
|
void *devid;
|
|
};
|
|
|
|
enum fnic_state {
|
|
FNIC_IN_FC_MODE = 0,
|
|
FNIC_IN_FC_TRANS_ETH_MODE,
|
|
FNIC_IN_ETH_MODE,
|
|
FNIC_IN_ETH_TRANS_FC_MODE,
|
|
};
|
|
|
|
#define FNIC_WQ_COPY_MAX 1
|
|
#define FNIC_WQ_MAX 1
|
|
#define FNIC_RQ_MAX 1
|
|
#define FNIC_CQ_MAX (FNIC_WQ_COPY_MAX + FNIC_WQ_MAX + FNIC_RQ_MAX)
|
|
|
|
struct mempool;
|
|
|
|
/* Per-instance private data structure */
|
|
struct fnic {
|
|
struct fc_lport *lport;
|
|
struct vnic_dev_bar bar0;
|
|
|
|
struct msix_entry msix_entry[FNIC_MSIX_INTR_MAX];
|
|
struct fnic_msix_entry msix[FNIC_MSIX_INTR_MAX];
|
|
|
|
struct vnic_stats *stats;
|
|
unsigned long stats_time; /* time of stats update */
|
|
struct vnic_nic_cfg *nic_cfg;
|
|
char name[IFNAMSIZ];
|
|
struct timer_list notify_timer; /* used for MSI interrupts */
|
|
|
|
unsigned int err_intr_offset;
|
|
unsigned int link_intr_offset;
|
|
|
|
unsigned int wq_count;
|
|
unsigned int cq_count;
|
|
|
|
u32 fcoui_mode:1; /* use fcoui address*/
|
|
u32 vlan_hw_insert:1; /* let hw insert the tag */
|
|
u32 in_remove:1; /* fnic device in removal */
|
|
u32 stop_rx_link_events:1; /* stop proc. rx frames, link events */
|
|
|
|
struct completion *remove_wait; /* device remove thread blocks */
|
|
|
|
struct fc_frame *flogi;
|
|
struct fc_frame *flogi_resp;
|
|
u16 flogi_oxid;
|
|
unsigned long s_id;
|
|
enum fnic_state state;
|
|
spinlock_t fnic_lock;
|
|
|
|
u16 vlan_id; /* VLAN tag including priority */
|
|
u8 mac_addr[ETH_ALEN];
|
|
u8 dest_addr[ETH_ALEN];
|
|
u8 data_src_addr[ETH_ALEN];
|
|
u64 fcp_input_bytes; /* internal statistic */
|
|
u64 fcp_output_bytes; /* internal statistic */
|
|
u32 link_down_cnt;
|
|
int link_status;
|
|
|
|
struct list_head list;
|
|
struct pci_dev *pdev;
|
|
struct vnic_fc_config config;
|
|
struct vnic_dev *vdev;
|
|
unsigned int raw_wq_count;
|
|
unsigned int wq_copy_count;
|
|
unsigned int rq_count;
|
|
int fw_ack_index[FNIC_WQ_COPY_MAX];
|
|
unsigned short fw_ack_recd[FNIC_WQ_COPY_MAX];
|
|
unsigned short wq_copy_desc_low[FNIC_WQ_COPY_MAX];
|
|
unsigned int intr_count;
|
|
u32 __iomem *legacy_pba;
|
|
struct fnic_host_tag *tags;
|
|
mempool_t *io_req_pool;
|
|
mempool_t *io_sgl_pool[FNIC_SGL_NUM_CACHES];
|
|
spinlock_t io_req_lock[FNIC_IO_LOCKS]; /* locks for scsi cmnds */
|
|
|
|
struct work_struct link_work;
|
|
struct work_struct frame_work;
|
|
struct sk_buff_head frame_queue;
|
|
|
|
/* copy work queue cache line section */
|
|
____cacheline_aligned struct vnic_wq_copy wq_copy[FNIC_WQ_COPY_MAX];
|
|
/* completion queue cache line section */
|
|
____cacheline_aligned struct vnic_cq cq[FNIC_CQ_MAX];
|
|
|
|
spinlock_t wq_copy_lock[FNIC_WQ_COPY_MAX];
|
|
|
|
/* work queue cache line section */
|
|
____cacheline_aligned struct vnic_wq wq[FNIC_WQ_MAX];
|
|
spinlock_t wq_lock[FNIC_WQ_MAX];
|
|
|
|
/* receive queue cache line section */
|
|
____cacheline_aligned struct vnic_rq rq[FNIC_RQ_MAX];
|
|
|
|
/* interrupt resource cache line section */
|
|
____cacheline_aligned struct vnic_intr intr[FNIC_MSIX_INTR_MAX];
|
|
};
|
|
|
|
extern struct workqueue_struct *fnic_event_queue;
|
|
extern struct device_attribute *fnic_attrs[];
|
|
|
|
void fnic_clear_intr_mode(struct fnic *fnic);
|
|
int fnic_set_intr_mode(struct fnic *fnic);
|
|
void fnic_free_intr(struct fnic *fnic);
|
|
int fnic_request_intr(struct fnic *fnic);
|
|
|
|
int fnic_send(struct fc_lport *, struct fc_frame *);
|
|
void fnic_free_wq_buf(struct vnic_wq *wq, struct vnic_wq_buf *buf);
|
|
void fnic_handle_frame(struct work_struct *work);
|
|
void fnic_handle_link(struct work_struct *work);
|
|
int fnic_rq_cmpl_handler(struct fnic *fnic, int);
|
|
int fnic_alloc_rq_frame(struct vnic_rq *rq);
|
|
void fnic_free_rq_buf(struct vnic_rq *rq, struct vnic_rq_buf *buf);
|
|
int fnic_send_frame(struct fnic *fnic, struct fc_frame *fp);
|
|
|
|
int fnic_queuecommand(struct scsi_cmnd *, void (*done)(struct scsi_cmnd *));
|
|
int fnic_abort_cmd(struct scsi_cmnd *);
|
|
int fnic_device_reset(struct scsi_cmnd *);
|
|
int fnic_host_reset(struct scsi_cmnd *);
|
|
int fnic_reset(struct Scsi_Host *);
|
|
void fnic_scsi_cleanup(struct fc_lport *);
|
|
void fnic_scsi_abort_io(struct fc_lport *);
|
|
void fnic_empty_scsi_cleanup(struct fc_lport *);
|
|
void fnic_exch_mgr_reset(struct fc_lport *, u32, u32);
|
|
int fnic_wq_copy_cmpl_handler(struct fnic *fnic, int);
|
|
int fnic_wq_cmpl_handler(struct fnic *fnic, int);
|
|
int fnic_flogi_reg_handler(struct fnic *fnic);
|
|
void fnic_wq_copy_cleanup_handler(struct vnic_wq_copy *wq,
|
|
struct fcpio_host_req *desc);
|
|
int fnic_fw_reset_handler(struct fnic *fnic);
|
|
void fnic_terminate_rport_io(struct fc_rport *);
|
|
const char *fnic_state_to_str(unsigned int state);
|
|
|
|
void fnic_log_q_error(struct fnic *fnic);
|
|
void fnic_handle_link_event(struct fnic *fnic);
|
|
|
|
#endif /* _FNIC_H_ */
|