xref: /linux/drivers/scsi/qedf/qedf.h (revision 00f5764dbb040188e5dce2cd9e648360886b045c)
161d8658bSDupuis, Chad /*
261d8658bSDupuis, Chad  *  QLogic FCoE Offload Driver
35d1c8b5bSChad Dupuis  *  Copyright (c) 2016-2018 Cavium Inc.
461d8658bSDupuis, Chad  *
561d8658bSDupuis, Chad  *  This software is available under the terms of the GNU General Public License
661d8658bSDupuis, Chad  *  (GPL) Version 2, available from the file COPYING in the main directory of
761d8658bSDupuis, Chad  *  this source tree.
861d8658bSDupuis, Chad  */
961d8658bSDupuis, Chad #ifndef _QEDFC_H_
1061d8658bSDupuis, Chad #define _QEDFC_H_
1161d8658bSDupuis, Chad 
1261d8658bSDupuis, Chad #include <scsi/libfcoe.h>
1361d8658bSDupuis, Chad #include <scsi/libfc.h>
1461d8658bSDupuis, Chad #include <scsi/fc/fc_fip.h>
1561d8658bSDupuis, Chad #include <scsi/fc/fc_fc2.h>
1661d8658bSDupuis, Chad #include <scsi/scsi_tcq.h>
1761d8658bSDupuis, Chad #include <scsi/fc_encode.h>
1861d8658bSDupuis, Chad #include <linux/version.h>
1961d8658bSDupuis, Chad 
2061d8658bSDupuis, Chad 
2161d8658bSDupuis, Chad /* qedf_hsi.h needs to before included any qed includes */
2261d8658bSDupuis, Chad #include "qedf_hsi.h"
2361d8658bSDupuis, Chad 
2461d8658bSDupuis, Chad #include <linux/qed/qed_if.h>
2561d8658bSDupuis, Chad #include <linux/qed/qed_fcoe_if.h>
2661d8658bSDupuis, Chad #include <linux/qed/qed_ll2_if.h>
2761d8658bSDupuis, Chad #include "qedf_version.h"
2861d8658bSDupuis, Chad #include "qedf_dbg.h"
29be086e7cSMintz, Yuval #include "drv_fcoe_fw_funcs.h"
3061d8658bSDupuis, Chad 
3161d8658bSDupuis, Chad /* Helpers to extract upper and lower 32-bits of pointer */
3261d8658bSDupuis, Chad #define U64_HI(val) ((u32)(((u64)(val)) >> 32))
3361d8658bSDupuis, Chad #define U64_LO(val) ((u32)(((u64)(val)) & 0xffffffff))
3461d8658bSDupuis, Chad 
3561d8658bSDupuis, Chad #define QEDF_DESCR "QLogic FCoE Offload Driver"
3661d8658bSDupuis, Chad #define QEDF_MODULE_NAME "qedf"
3761d8658bSDupuis, Chad 
3861d8658bSDupuis, Chad #define QEDF_FLOGI_RETRY_CNT	3
3961d8658bSDupuis, Chad #define QEDF_RPORT_RETRY_CNT	255
4061d8658bSDupuis, Chad #define QEDF_MAX_SESSIONS	1024
4161d8658bSDupuis, Chad #define QEDF_MAX_PAYLOAD	2048
4261d8658bSDupuis, Chad #define QEDF_MAX_BDS_PER_CMD	256
4361d8658bSDupuis, Chad #define QEDF_MAX_BD_LEN		0xffff
4461d8658bSDupuis, Chad #define QEDF_BD_SPLIT_SZ	0x1000
4561d8658bSDupuis, Chad #define QEDF_PAGE_SIZE		4096
4661d8658bSDupuis, Chad #define QED_HW_DMA_BOUNDARY     0xfff
4761d8658bSDupuis, Chad #define QEDF_MAX_SGLEN_FOR_CACHESGL		((1U << 16) - 1)
4861d8658bSDupuis, Chad #define QEDF_MFS		(QEDF_MAX_PAYLOAD + \
4961d8658bSDupuis, Chad 	sizeof(struct fc_frame_header))
5061d8658bSDupuis, Chad #define QEDF_MAX_NPIV		64
5161d8658bSDupuis, Chad #define QEDF_TM_TIMEOUT		10
5269ef2c69SSaurav Kashyap #define QEDF_ABORT_TIMEOUT	(10 * 1000)
5369ef2c69SSaurav Kashyap #define QEDF_CLEANUP_TIMEOUT	1
5461d8658bSDupuis, Chad #define QEDF_MAX_CDB_LEN	16
5561d8658bSDupuis, Chad 
5661d8658bSDupuis, Chad #define UPSTREAM_REMOVE		1
5761d8658bSDupuis, Chad #define UPSTREAM_KEEP		1
5861d8658bSDupuis, Chad 
5961d8658bSDupuis, Chad struct qedf_mp_req {
6061d8658bSDupuis, Chad 	uint32_t req_len;
6161d8658bSDupuis, Chad 	void *req_buf;
6261d8658bSDupuis, Chad 	dma_addr_t req_buf_dma;
63be086e7cSMintz, Yuval 	struct scsi_sge *mp_req_bd;
6461d8658bSDupuis, Chad 	dma_addr_t mp_req_bd_dma;
6561d8658bSDupuis, Chad 	struct fc_frame_header req_fc_hdr;
6661d8658bSDupuis, Chad 
6761d8658bSDupuis, Chad 	uint32_t resp_len;
6861d8658bSDupuis, Chad 	void *resp_buf;
6961d8658bSDupuis, Chad 	dma_addr_t resp_buf_dma;
70be086e7cSMintz, Yuval 	struct scsi_sge *mp_resp_bd;
7161d8658bSDupuis, Chad 	dma_addr_t mp_resp_bd_dma;
7261d8658bSDupuis, Chad 	struct fc_frame_header resp_fc_hdr;
7361d8658bSDupuis, Chad };
7461d8658bSDupuis, Chad 
7561d8658bSDupuis, Chad struct qedf_els_cb_arg {
7661d8658bSDupuis, Chad 	struct qedf_ioreq *aborted_io_req;
7761d8658bSDupuis, Chad 	struct qedf_ioreq *io_req;
7861d8658bSDupuis, Chad 	u8 op; /* Used to keep track of ELS op */
7961d8658bSDupuis, Chad 	uint16_t l2_oxid;
8061d8658bSDupuis, Chad 	u32 offset; /* Used for sequence cleanup */
8161d8658bSDupuis, Chad 	u8 r_ctl; /* Used for sequence cleanup */
8261d8658bSDupuis, Chad };
8361d8658bSDupuis, Chad 
8461d8658bSDupuis, Chad enum qedf_ioreq_event {
8569ef2c69SSaurav Kashyap 	QEDF_IOREQ_EV_NONE,
8661d8658bSDupuis, Chad 	QEDF_IOREQ_EV_ABORT_SUCCESS,
8761d8658bSDupuis, Chad 	QEDF_IOREQ_EV_ABORT_FAILED,
8861d8658bSDupuis, Chad 	QEDF_IOREQ_EV_SEND_RRQ,
8961d8658bSDupuis, Chad 	QEDF_IOREQ_EV_ELS_TMO,
9061d8658bSDupuis, Chad 	QEDF_IOREQ_EV_ELS_ERR_DETECT,
9161d8658bSDupuis, Chad 	QEDF_IOREQ_EV_ELS_FLUSH,
9261d8658bSDupuis, Chad 	QEDF_IOREQ_EV_CLEANUP_SUCCESS,
9361d8658bSDupuis, Chad 	QEDF_IOREQ_EV_CLEANUP_FAILED,
9461d8658bSDupuis, Chad };
9561d8658bSDupuis, Chad 
9661d8658bSDupuis, Chad #define FC_GOOD		0
9761d8658bSDupuis, Chad #define FCOE_FCP_RSP_FLAGS_FCP_RESID_OVER	(0x1<<2)
9861d8658bSDupuis, Chad #define FCOE_FCP_RSP_FLAGS_FCP_RESID_UNDER	(0x1<<3)
9961d8658bSDupuis, Chad #define CMD_SCSI_STATUS(Cmnd)			((Cmnd)->SCp.Status)
10061d8658bSDupuis, Chad #define FCOE_FCP_RSP_FLAGS_FCP_RSP_LEN_VALID	(0x1<<0)
10161d8658bSDupuis, Chad #define FCOE_FCP_RSP_FLAGS_FCP_SNS_LEN_VALID	(0x1<<1)
10261d8658bSDupuis, Chad struct qedf_ioreq {
10361d8658bSDupuis, Chad 	struct list_head link;
10461d8658bSDupuis, Chad 	uint16_t xid;
10561d8658bSDupuis, Chad 	struct scsi_cmnd *sc_cmd;
10661d8658bSDupuis, Chad #define QEDF_SCSI_CMD		1
10761d8658bSDupuis, Chad #define QEDF_TASK_MGMT_CMD	2
10861d8658bSDupuis, Chad #define QEDF_ABTS		3
10961d8658bSDupuis, Chad #define QEDF_ELS		4
11061d8658bSDupuis, Chad #define QEDF_CLEANUP		5
11161d8658bSDupuis, Chad #define QEDF_SEQ_CLEANUP	6
11261d8658bSDupuis, Chad 	u8 cmd_type;
11361d8658bSDupuis, Chad #define QEDF_CMD_OUTSTANDING		0x0
11461d8658bSDupuis, Chad #define QEDF_CMD_IN_ABORT		0x1
11561d8658bSDupuis, Chad #define QEDF_CMD_IN_CLEANUP		0x2
11661d8658bSDupuis, Chad #define QEDF_CMD_SRR_SENT		0x3
1175d5e5565SShyam Sundar #define QEDF_CMD_DIRTY			0x4
1185d5e5565SShyam Sundar #define QEDF_CMD_ERR_SCSI_DONE		0x5
11961d8658bSDupuis, Chad 	u8 io_req_flags;
120be086e7cSMintz, Yuval 	uint8_t tm_flags;
12161d8658bSDupuis, Chad 	struct qedf_rport *fcport;
122faea5719SShyam Sundar #define	QEDF_CMD_ST_INACTIVE		0
123faea5719SShyam Sundar #define	QEDFC_CMD_ST_IO_ACTIVE		1
124faea5719SShyam Sundar #define	QEDFC_CMD_ST_ABORT_ACTIVE	2
125faea5719SShyam Sundar #define	QEDFC_CMD_ST_ABORT_ACTIVE_EH	3
126faea5719SShyam Sundar #define	QEDFC_CMD_ST_CLEANUP_ACTIVE	4
127faea5719SShyam Sundar #define	QEDFC_CMD_ST_CLEANUP_ACTIVE_EH	5
128faea5719SShyam Sundar #define	QEDFC_CMD_ST_RRQ_ACTIVE		6
129faea5719SShyam Sundar #define	QEDFC_CMD_ST_RRQ_WAIT		7
130faea5719SShyam Sundar #define	QEDFC_CMD_ST_OXID_RETIRE_WAIT	8
131faea5719SShyam Sundar #define	QEDFC_CMD_ST_TMF_ACTIVE		9
132faea5719SShyam Sundar #define	QEDFC_CMD_ST_DRAIN_ACTIVE	10
133faea5719SShyam Sundar #define	QEDFC_CMD_ST_CLEANED		11
134faea5719SShyam Sundar #define	QEDFC_CMD_ST_ELS_ACTIVE		12
135faea5719SShyam Sundar 	atomic_t state;
13661d8658bSDupuis, Chad 	unsigned long flags;
13761d8658bSDupuis, Chad 	enum qedf_ioreq_event event;
13861d8658bSDupuis, Chad 	size_t data_xfer_len;
139faea5719SShyam Sundar 	/* ID: 001: Alloc cmd (qedf_alloc_cmd) */
140faea5719SShyam Sundar 	/* ID: 002: Initiate ABTS (qedf_initiate_abts) */
141faea5719SShyam Sundar 	/* ID: 003: For RRQ (qedf_process_abts_compl) */
14261d8658bSDupuis, Chad 	struct kref refcount;
14361d8658bSDupuis, Chad 	struct qedf_cmd_mgr *cmd_mgr;
14461d8658bSDupuis, Chad 	struct io_bdt *bd_tbl;
14561d8658bSDupuis, Chad 	struct delayed_work timeout_work;
14661d8658bSDupuis, Chad 	struct completion tm_done;
14761d8658bSDupuis, Chad 	struct completion abts_done;
14896b1765aSChad Dupuis 	struct completion cleanup_done;
14921dd79e8STomer Tayar 	struct e4_fcoe_task_context *task;
150be086e7cSMintz, Yuval 	struct fcoe_task_params *task_params;
151be086e7cSMintz, Yuval 	struct scsi_sgl_task_params *sgl_task_params;
15261d8658bSDupuis, Chad 	int idx;
1535d5e5565SShyam Sundar 	int lun;
15461d8658bSDupuis, Chad /*
15561d8658bSDupuis, Chad  * Need to allocate enough room for both sense data and FCP response data
15661d8658bSDupuis, Chad  * which has a max length of 8 bytes according to spec.
15761d8658bSDupuis, Chad  */
15861d8658bSDupuis, Chad #define QEDF_SCSI_SENSE_BUFFERSIZE	(SCSI_SENSE_BUFFERSIZE + 8)
15961d8658bSDupuis, Chad 	uint8_t *sense_buffer;
16061d8658bSDupuis, Chad 	dma_addr_t sense_buffer_dma;
16161d8658bSDupuis, Chad 	u32 fcp_resid;
16261d8658bSDupuis, Chad 	u32 fcp_rsp_len;
16361d8658bSDupuis, Chad 	u32 fcp_sns_len;
16461d8658bSDupuis, Chad 	u8 cdb_status;
16561d8658bSDupuis, Chad 	u8 fcp_status;
16661d8658bSDupuis, Chad 	u8 fcp_rsp_code;
16761d8658bSDupuis, Chad 	u8 scsi_comp_flags;
16861d8658bSDupuis, Chad #define QEDF_MAX_REUSE		0xfff
16961d8658bSDupuis, Chad 	u16 reuse_count;
17061d8658bSDupuis, Chad 	struct qedf_mp_req mp_req;
17161d8658bSDupuis, Chad 	void (*cb_func)(struct qedf_els_cb_arg *cb_arg);
17261d8658bSDupuis, Chad 	struct qedf_els_cb_arg *cb_arg;
17361d8658bSDupuis, Chad 	int fp_idx;
17461d8658bSDupuis, Chad 	unsigned int cpu;
17561d8658bSDupuis, Chad 	unsigned int int_cpu;
1763e2c11b3SChad Dupuis #define QEDF_IOREQ_UNKNOWN_SGE		1
1773e2c11b3SChad Dupuis #define QEDF_IOREQ_SLOW_SGE		2
1783e2c11b3SChad Dupuis #define QEDF_IOREQ_FAST_SGE		3
17961d8658bSDupuis, Chad 	u8 sge_type;
18061d8658bSDupuis, Chad 	struct delayed_work rrq_work;
18161d8658bSDupuis, Chad 
18261d8658bSDupuis, Chad 	/* Used for sequence level recovery; i.e. REC/SRR */
18361d8658bSDupuis, Chad 	uint32_t rx_buf_off;
18461d8658bSDupuis, Chad 	uint32_t tx_buf_off;
18561d8658bSDupuis, Chad 	uint32_t rx_id;
18661d8658bSDupuis, Chad 	uint32_t task_retry_identifier;
18761d8658bSDupuis, Chad 
18861d8658bSDupuis, Chad 	/*
18961d8658bSDupuis, Chad 	 * Used to tell if we need to return a SCSI command
19061d8658bSDupuis, Chad 	 * during some form of error processing.
19161d8658bSDupuis, Chad 	 */
19261d8658bSDupuis, Chad 	bool return_scsi_cmd_on_abts;
1935d5e5565SShyam Sundar 
1945d5e5565SShyam Sundar 	unsigned int alloc;
19561d8658bSDupuis, Chad };
19661d8658bSDupuis, Chad 
19761d8658bSDupuis, Chad extern struct workqueue_struct *qedf_io_wq;
19861d8658bSDupuis, Chad 
19961d8658bSDupuis, Chad struct qedf_rport {
20061d8658bSDupuis, Chad 	spinlock_t rport_lock;
20161d8658bSDupuis, Chad #define QEDF_RPORT_SESSION_READY 1
20261d8658bSDupuis, Chad #define QEDF_RPORT_UPLOADING_CONNECTION	2
20344c7c859SChad Dupuis #define QEDF_RPORT_IN_RESET 3
20469ef2c69SSaurav Kashyap #define QEDF_RPORT_IN_LUN_RESET 4
20569ef2c69SSaurav Kashyap #define QEDF_RPORT_IN_TARGET_RESET 5
20661d8658bSDupuis, Chad 	unsigned long flags;
20769ef2c69SSaurav Kashyap 	int lun_reset_lun;
20861d8658bSDupuis, Chad 	unsigned long retry_delay_timestamp;
20961d8658bSDupuis, Chad 	struct fc_rport *rport;
21061d8658bSDupuis, Chad 	struct fc_rport_priv *rdata;
21161d8658bSDupuis, Chad 	struct qedf_ctx *qedf;
21261d8658bSDupuis, Chad 	u32 handle; /* Handle from qed */
21361d8658bSDupuis, Chad 	u32 fw_cid; /* fw_cid from qed */
21461d8658bSDupuis, Chad 	void __iomem *p_doorbell;
21561d8658bSDupuis, Chad 	/* Send queue management */
21661d8658bSDupuis, Chad 	atomic_t free_sqes;
2175d5e5565SShyam Sundar 	atomic_t ios_to_queue;
21861d8658bSDupuis, Chad 	atomic_t num_active_ios;
21961d8658bSDupuis, Chad 	struct fcoe_wqe *sq;
22061d8658bSDupuis, Chad 	dma_addr_t sq_dma;
22161d8658bSDupuis, Chad 	u16 sq_prod_idx;
22261d8658bSDupuis, Chad 	u16 fw_sq_prod_idx;
22361d8658bSDupuis, Chad 	u16 sq_con_idx;
22461d8658bSDupuis, Chad 	u32 sq_mem_size;
22561d8658bSDupuis, Chad 	void *sq_pbl;
22661d8658bSDupuis, Chad 	dma_addr_t sq_pbl_dma;
22761d8658bSDupuis, Chad 	u32 sq_pbl_size;
22861d8658bSDupuis, Chad 	u32 sid;
229be086e7cSMintz, Yuval #define	QEDF_RPORT_TYPE_DISK		0
230be086e7cSMintz, Yuval #define	QEDF_RPORT_TYPE_TAPE		1
23161d8658bSDupuis, Chad 	uint dev_type; /* Disk or tape */
23261d8658bSDupuis, Chad 	struct list_head peers;
23361d8658bSDupuis, Chad };
23461d8658bSDupuis, Chad 
23561d8658bSDupuis, Chad /* Used to contain LL2 skb's in ll2_skb_list */
23661d8658bSDupuis, Chad struct qedf_skb_work {
23761d8658bSDupuis, Chad 	struct work_struct work;
23861d8658bSDupuis, Chad 	struct sk_buff *skb;
23961d8658bSDupuis, Chad 	struct qedf_ctx *qedf;
24061d8658bSDupuis, Chad };
24161d8658bSDupuis, Chad 
24261d8658bSDupuis, Chad struct qedf_fastpath {
24361d8658bSDupuis, Chad #define	QEDF_SB_ID_NULL		0xffff
24461d8658bSDupuis, Chad 	u16		sb_id;
24561d8658bSDupuis, Chad 	struct qed_sb_info	*sb_info;
24661d8658bSDupuis, Chad 	struct qedf_ctx *qedf;
24761d8658bSDupuis, Chad 	/* Keep track of number of completions on this fastpath */
24861d8658bSDupuis, Chad 	unsigned long completions;
24961d8658bSDupuis, Chad 	uint32_t cq_num_entries;
25061d8658bSDupuis, Chad };
25161d8658bSDupuis, Chad 
25261d8658bSDupuis, Chad /* Used to pass fastpath information needed to process CQEs */
25361d8658bSDupuis, Chad struct qedf_io_work {
25461d8658bSDupuis, Chad 	struct work_struct work;
25561d8658bSDupuis, Chad 	struct fcoe_cqe cqe;
25661d8658bSDupuis, Chad 	struct qedf_ctx *qedf;
25761d8658bSDupuis, Chad 	struct fc_frame *fp;
25861d8658bSDupuis, Chad };
25961d8658bSDupuis, Chad 
26061d8658bSDupuis, Chad struct qedf_glbl_q_params {
26161d8658bSDupuis, Chad 	u64	hw_p_cq;	/* Completion queue PBL */
26261d8658bSDupuis, Chad 	u64	hw_p_rq;	/* Request queue PBL */
26361d8658bSDupuis, Chad 	u64	hw_p_cmdq;	/* Command queue PBL */
26461d8658bSDupuis, Chad };
26561d8658bSDupuis, Chad 
26661d8658bSDupuis, Chad struct global_queue {
26761d8658bSDupuis, Chad 	struct fcoe_cqe *cq;
26861d8658bSDupuis, Chad 	dma_addr_t cq_dma;
26961d8658bSDupuis, Chad 	u32 cq_mem_size;
27061d8658bSDupuis, Chad 	u32 cq_cons_idx; /* Completion queue consumer index */
27161d8658bSDupuis, Chad 	u32 cq_prod_idx;
27261d8658bSDupuis, Chad 
27361d8658bSDupuis, Chad 	void *cq_pbl;
27461d8658bSDupuis, Chad 	dma_addr_t cq_pbl_dma;
27561d8658bSDupuis, Chad 	u32 cq_pbl_size;
27661d8658bSDupuis, Chad };
27761d8658bSDupuis, Chad 
27861d8658bSDupuis, Chad /* I/O tracing entry */
27961d8658bSDupuis, Chad #define QEDF_IO_TRACE_SIZE		2048
28061d8658bSDupuis, Chad struct qedf_io_log {
28161d8658bSDupuis, Chad #define QEDF_IO_TRACE_REQ		0
28261d8658bSDupuis, Chad #define QEDF_IO_TRACE_RSP		1
28361d8658bSDupuis, Chad 	uint8_t direction;
28461d8658bSDupuis, Chad 	uint16_t task_id;
28561d8658bSDupuis, Chad 	uint32_t port_id; /* Remote port fabric ID */
28661d8658bSDupuis, Chad 	int lun;
2870d2fc3b4SDan Carpenter 	unsigned char op; /* SCSI CDB */
28861d8658bSDupuis, Chad 	uint8_t lba[4];
28961d8658bSDupuis, Chad 	unsigned int bufflen; /* SCSI buffer length */
29061d8658bSDupuis, Chad 	unsigned int sg_count; /* Number of SG elements */
29161d8658bSDupuis, Chad 	int result; /* Result passed back to mid-layer */
29261d8658bSDupuis, Chad 	unsigned long jiffies; /* Time stamp when I/O logged */
29361d8658bSDupuis, Chad 	int refcount; /* Reference count for task id */
29461d8658bSDupuis, Chad 	unsigned int req_cpu; /* CPU that the task is queued on */
29561d8658bSDupuis, Chad 	unsigned int int_cpu; /* Interrupt CPU that the task is received on */
29661d8658bSDupuis, Chad 	unsigned int rsp_cpu; /* CPU that task is returned on */
29761d8658bSDupuis, Chad 	u8 sge_type; /* Did we take the slow, single or fast SGE path */
29861d8658bSDupuis, Chad };
29961d8658bSDupuis, Chad 
30061d8658bSDupuis, Chad /* Number of entries in BDQ */
30161d8658bSDupuis, Chad #define QEDF_BDQ_SIZE			256
30261d8658bSDupuis, Chad #define QEDF_BDQ_BUF_SIZE		2072
30361d8658bSDupuis, Chad 
30461d8658bSDupuis, Chad /* DMA coherent buffers for BDQ */
30561d8658bSDupuis, Chad struct qedf_bdq_buf {
30661d8658bSDupuis, Chad 	void *buf_addr;
30761d8658bSDupuis, Chad 	dma_addr_t buf_dma;
30861d8658bSDupuis, Chad };
30961d8658bSDupuis, Chad 
31061d8658bSDupuis, Chad /* Main adapter struct */
31161d8658bSDupuis, Chad struct qedf_ctx {
31261d8658bSDupuis, Chad 	struct qedf_dbg_ctx dbg_ctx;
31361d8658bSDupuis, Chad 	struct fcoe_ctlr ctlr;
31461d8658bSDupuis, Chad 	struct fc_lport *lport;
31561d8658bSDupuis, Chad 	u8 data_src_addr[ETH_ALEN];
31661d8658bSDupuis, Chad #define QEDF_LINK_DOWN		0
31761d8658bSDupuis, Chad #define QEDF_LINK_UP		1
31861d8658bSDupuis, Chad 	atomic_t link_state;
31961d8658bSDupuis, Chad #define QEDF_DCBX_PENDING	0
32061d8658bSDupuis, Chad #define QEDF_DCBX_DONE		1
32161d8658bSDupuis, Chad 	atomic_t dcbx;
32261d8658bSDupuis, Chad #define QEDF_NULL_VLAN_ID	-1
32361d8658bSDupuis, Chad #define QEDF_FALLBACK_VLAN	1002
32461d8658bSDupuis, Chad #define QEDF_DEFAULT_PRIO	3
32561d8658bSDupuis, Chad 	int vlan_id;
32684b2ba6eSChad Dupuis 	u8 prio;
32761d8658bSDupuis, Chad 	struct qed_dev *cdev;
32861d8658bSDupuis, Chad 	struct qed_dev_fcoe_info dev_info;
32961d8658bSDupuis, Chad 	struct qed_int_info int_info;
33061d8658bSDupuis, Chad 	uint16_t last_command;
33161d8658bSDupuis, Chad 	spinlock_t hba_lock;
33261d8658bSDupuis, Chad 	struct pci_dev *pdev;
33361d8658bSDupuis, Chad 	u64 wwnn;
33461d8658bSDupuis, Chad 	u64 wwpn;
33561d8658bSDupuis, Chad 	u8 __aligned(16) mac[ETH_ALEN];
33661d8658bSDupuis, Chad 	struct list_head fcports;
33761d8658bSDupuis, Chad 	atomic_t num_offloads;
33861d8658bSDupuis, Chad 	unsigned int curr_conn_id;
33961d8658bSDupuis, Chad 	struct workqueue_struct *ll2_recv_wq;
34061d8658bSDupuis, Chad 	struct workqueue_struct *link_update_wq;
34161d8658bSDupuis, Chad 	struct delayed_work link_update;
34261d8658bSDupuis, Chad 	struct delayed_work link_recovery;
34361d8658bSDupuis, Chad 	struct completion flogi_compl;
34461d8658bSDupuis, Chad 	struct completion fipvlan_compl;
34561d8658bSDupuis, Chad 
34661d8658bSDupuis, Chad 	/*
34761d8658bSDupuis, Chad 	 * Used to tell if we're in the window where we are waiting for
34861d8658bSDupuis, Chad 	 * the link to come back up before informting fcoe that the link is
34961d8658bSDupuis, Chad 	 * done.
35061d8658bSDupuis, Chad 	 */
35161d8658bSDupuis, Chad 	atomic_t link_down_tmo_valid;
35261d8658bSDupuis, Chad #define QEDF_TIMER_INTERVAL		(1 * HZ)
35361d8658bSDupuis, Chad 	struct timer_list timer; /* One second book keeping timer */
35461d8658bSDupuis, Chad #define QEDF_DRAIN_ACTIVE		1
35561d8658bSDupuis, Chad #define QEDF_LL2_STARTED		2
35661d8658bSDupuis, Chad #define QEDF_UNLOADING			3
35761d8658bSDupuis, Chad #define QEDF_GRCDUMP_CAPTURE		4
35861d8658bSDupuis, Chad #define QEDF_IN_RECOVERY		5
35961d8658bSDupuis, Chad #define QEDF_DBG_STOP_IO		6
36061d8658bSDupuis, Chad 	unsigned long flags; /* Miscellaneous state flags */
36161d8658bSDupuis, Chad 	int fipvlan_retries;
36261d8658bSDupuis, Chad 	u8 num_queues;
36361d8658bSDupuis, Chad 	struct global_queue **global_queues;
36461d8658bSDupuis, Chad 	/* Pointer to array of queue structures */
36561d8658bSDupuis, Chad 	struct qedf_glbl_q_params *p_cpuq;
36661d8658bSDupuis, Chad 	/* Physical address of array of queue structures */
36761d8658bSDupuis, Chad 	dma_addr_t hw_p_cpuq;
36861d8658bSDupuis, Chad 
36961d8658bSDupuis, Chad 	struct qedf_bdq_buf bdq[QEDF_BDQ_SIZE];
37061d8658bSDupuis, Chad 	void *bdq_pbl;
37161d8658bSDupuis, Chad 	dma_addr_t bdq_pbl_dma;
37261d8658bSDupuis, Chad 	size_t bdq_pbl_mem_size;
37361d8658bSDupuis, Chad 	void *bdq_pbl_list;
37461d8658bSDupuis, Chad 	dma_addr_t bdq_pbl_list_dma;
37561d8658bSDupuis, Chad 	u8 bdq_pbl_list_num_entries;
37661d8658bSDupuis, Chad 	void __iomem *bdq_primary_prod;
37761d8658bSDupuis, Chad 	void __iomem *bdq_secondary_prod;
37861d8658bSDupuis, Chad 	uint16_t bdq_prod_idx;
37961d8658bSDupuis, Chad 
38061d8658bSDupuis, Chad 	/* Structure for holding all the fastpath for this qedf_ctx */
38161d8658bSDupuis, Chad 	struct qedf_fastpath *fp_array;
38261d8658bSDupuis, Chad 	struct qed_fcoe_tid tasks;
38361d8658bSDupuis, Chad 	struct qedf_cmd_mgr *cmd_mgr;
38461d8658bSDupuis, Chad 	/* Holds the PF parameters we pass to qed to start he FCoE function */
38561d8658bSDupuis, Chad 	struct qed_pf_params pf_params;
38661d8658bSDupuis, Chad 	/* Used to time middle path ELS and TM commands */
38761d8658bSDupuis, Chad 	struct workqueue_struct *timer_work_queue;
38861d8658bSDupuis, Chad 
38961d8658bSDupuis, Chad #define QEDF_IO_WORK_MIN		64
39061d8658bSDupuis, Chad 	mempool_t *io_mempool;
39161d8658bSDupuis, Chad 	struct workqueue_struct *dpc_wq;
3924b9b7fabSChad Dupuis 	struct delayed_work grcdump_work;
39361d8658bSDupuis, Chad 
39461d8658bSDupuis, Chad 	u32 slow_sge_ios;
39561d8658bSDupuis, Chad 	u32 fast_sge_ios;
39661d8658bSDupuis, Chad 
39761d8658bSDupuis, Chad 	uint8_t	*grcdump;
39861d8658bSDupuis, Chad 	uint32_t grcdump_size;
39961d8658bSDupuis, Chad 
40061d8658bSDupuis, Chad 	struct qedf_io_log io_trace_buf[QEDF_IO_TRACE_SIZE];
40161d8658bSDupuis, Chad 	spinlock_t io_trace_lock;
40261d8658bSDupuis, Chad 	uint16_t io_trace_idx;
40361d8658bSDupuis, Chad 
40461d8658bSDupuis, Chad 	bool stop_io_on_error;
40561d8658bSDupuis, Chad 
40661d8658bSDupuis, Chad 	u32 flogi_cnt;
40761d8658bSDupuis, Chad 	u32 flogi_failed;
40861d8658bSDupuis, Chad 
40961d8658bSDupuis, Chad 	/* Used for fc statistics */
410642a0b37SChad Dupuis 	struct mutex stats_mutex;
41161d8658bSDupuis, Chad 	u64 input_requests;
41261d8658bSDupuis, Chad 	u64 output_requests;
41361d8658bSDupuis, Chad 	u64 control_requests;
41461d8658bSDupuis, Chad 	u64 packet_aborts;
41561d8658bSDupuis, Chad 	u64 alloc_failures;
416642a0b37SChad Dupuis 	u8 lun_resets;
417642a0b37SChad Dupuis 	u8 target_resets;
418642a0b37SChad Dupuis 	u8 task_set_fulls;
419642a0b37SChad Dupuis 	u8 busy;
42069ef2c69SSaurav Kashyap 	/* Used for flush routine */
42169ef2c69SSaurav Kashyap 	struct mutex flush_mutex;
42261d8658bSDupuis, Chad };
42361d8658bSDupuis, Chad 
42461d8658bSDupuis, Chad struct io_bdt {
42561d8658bSDupuis, Chad 	struct qedf_ioreq *io_req;
426be086e7cSMintz, Yuval 	struct scsi_sge *bd_tbl;
42761d8658bSDupuis, Chad 	dma_addr_t bd_tbl_dma;
42861d8658bSDupuis, Chad 	u16 bd_valid;
42961d8658bSDupuis, Chad };
43061d8658bSDupuis, Chad 
43161d8658bSDupuis, Chad struct qedf_cmd_mgr {
43261d8658bSDupuis, Chad 	struct qedf_ctx *qedf;
43361d8658bSDupuis, Chad 	u16 idx;
43461d8658bSDupuis, Chad 	struct io_bdt **io_bdt_pool;
435be086e7cSMintz, Yuval #define FCOE_PARAMS_NUM_TASKS		2048
43661d8658bSDupuis, Chad 	struct qedf_ioreq cmds[FCOE_PARAMS_NUM_TASKS];
43761d8658bSDupuis, Chad 	spinlock_t lock;
43861d8658bSDupuis, Chad 	atomic_t free_list_cnt;
43961d8658bSDupuis, Chad };
44061d8658bSDupuis, Chad 
44161d8658bSDupuis, Chad /* Stolen from qed_cxt_api.h and adapted for qed_fcoe_info
44261d8658bSDupuis, Chad  * Usage:
44361d8658bSDupuis, Chad  *
44461d8658bSDupuis, Chad  * void *ptr;
44561d8658bSDupuis, Chad  * ptr = qedf_get_task_mem(&qedf->tasks, 128);
44661d8658bSDupuis, Chad  */
44761d8658bSDupuis, Chad static inline void *qedf_get_task_mem(struct qed_fcoe_tid *info, u32 tid)
44861d8658bSDupuis, Chad {
44961d8658bSDupuis, Chad 	return (void *)(info->blocks[tid / info->num_tids_per_block] +
45061d8658bSDupuis, Chad 			(tid % info->num_tids_per_block) * info->size);
45161d8658bSDupuis, Chad }
45261d8658bSDupuis, Chad 
45361d8658bSDupuis, Chad static inline void qedf_stop_all_io(struct qedf_ctx *qedf)
45461d8658bSDupuis, Chad {
45561d8658bSDupuis, Chad 	set_bit(QEDF_DBG_STOP_IO, &qedf->flags);
45661d8658bSDupuis, Chad }
45761d8658bSDupuis, Chad 
45861d8658bSDupuis, Chad /*
45961d8658bSDupuis, Chad  * Externs
46061d8658bSDupuis, Chad  */
461*8b95b99cSSaurav Kashyap 
462*8b95b99cSSaurav Kashyap /*
463*8b95b99cSSaurav Kashyap  * (QEDF_LOG_NPIV | QEDF_LOG_SESS | QEDF_LOG_LPORT | QEDF_LOG_ELS | QEDF_LOG_MQ
464*8b95b99cSSaurav Kashyap  * | QEDF_LOG_IO | QEDF_LOG_UNSOL | QEDF_LOG_SCSI_TM | QEDF_LOG_MP_REQ |
465*8b95b99cSSaurav Kashyap  * QEDF_LOG_EVT | QEDF_LOG_CONN | QEDF_LOG_DISC | QEDF_LOG_INFO)
466*8b95b99cSSaurav Kashyap  */
46761d8658bSDupuis, Chad #define QEDF_DEFAULT_LOG_MASK		0x3CFB6
46861d8658bSDupuis, Chad extern const struct qed_fcoe_ops *qed_ops;
46961d8658bSDupuis, Chad extern uint qedf_dump_frames;
47061d8658bSDupuis, Chad extern uint qedf_io_tracing;
47161d8658bSDupuis, Chad extern uint qedf_stop_io_on_error;
47261d8658bSDupuis, Chad extern uint qedf_link_down_tmo;
47361d8658bSDupuis, Chad #define QEDF_RETRY_DELAY_MAX		20 /* 2 seconds */
47461d8658bSDupuis, Chad extern bool qedf_retry_delay;
47561d8658bSDupuis, Chad extern uint qedf_debug;
47661d8658bSDupuis, Chad 
47761d8658bSDupuis, Chad extern struct qedf_cmd_mgr *qedf_cmd_mgr_alloc(struct qedf_ctx *qedf);
47861d8658bSDupuis, Chad extern void qedf_cmd_mgr_free(struct qedf_cmd_mgr *cmgr);
47961d8658bSDupuis, Chad extern int qedf_queuecommand(struct Scsi_Host *host,
48061d8658bSDupuis, Chad 	struct scsi_cmnd *sc_cmd);
48161d8658bSDupuis, Chad extern void qedf_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb);
48261d8658bSDupuis, Chad extern u8 *qedf_get_src_mac(struct fc_lport *lport);
48361d8658bSDupuis, Chad extern void qedf_fip_recv(struct qedf_ctx *qedf, struct sk_buff *skb);
48461d8658bSDupuis, Chad extern void qedf_fcoe_send_vlan_req(struct qedf_ctx *qedf);
48561d8658bSDupuis, Chad extern void qedf_scsi_completion(struct qedf_ctx *qedf, struct fcoe_cqe *cqe,
48661d8658bSDupuis, Chad 	struct qedf_ioreq *io_req);
48761d8658bSDupuis, Chad extern void qedf_process_warning_compl(struct qedf_ctx *qedf,
48861d8658bSDupuis, Chad 	struct fcoe_cqe *cqe, struct qedf_ioreq *io_req);
48961d8658bSDupuis, Chad extern void qedf_process_error_detect(struct qedf_ctx *qedf,
49061d8658bSDupuis, Chad 	struct fcoe_cqe *cqe, struct qedf_ioreq *io_req);
49161d8658bSDupuis, Chad extern void qedf_flush_active_ios(struct qedf_rport *fcport, int lun);
49261d8658bSDupuis, Chad extern void qedf_release_cmd(struct kref *ref);
49361d8658bSDupuis, Chad extern int qedf_initiate_abts(struct qedf_ioreq *io_req,
49461d8658bSDupuis, Chad 	bool return_scsi_cmd_on_abts);
49561d8658bSDupuis, Chad extern void qedf_process_abts_compl(struct qedf_ctx *qedf, struct fcoe_cqe *cqe,
49661d8658bSDupuis, Chad 	struct qedf_ioreq *io_req);
49761d8658bSDupuis, Chad extern struct qedf_ioreq *qedf_alloc_cmd(struct qedf_rport *fcport,
49861d8658bSDupuis, Chad 	u8 cmd_type);
49961d8658bSDupuis, Chad 
50061d8658bSDupuis, Chad extern struct device_attribute *qedf_host_attrs[];
50161d8658bSDupuis, Chad extern void qedf_cmd_timer_set(struct qedf_ctx *qedf, struct qedf_ioreq *io_req,
50261d8658bSDupuis, Chad 	unsigned int timer_msec);
50361d8658bSDupuis, Chad extern int qedf_init_mp_req(struct qedf_ioreq *io_req);
50461d8658bSDupuis, Chad extern void qedf_init_mp_task(struct qedf_ioreq *io_req,
50521dd79e8STomer Tayar 	struct e4_fcoe_task_context *task_ctx, struct fcoe_wqe *sqe);
506be086e7cSMintz, Yuval extern u16 qedf_get_sqe_idx(struct qedf_rport *fcport);
50761d8658bSDupuis, Chad extern void qedf_ring_doorbell(struct qedf_rport *fcport);
50861d8658bSDupuis, Chad extern void qedf_process_els_compl(struct qedf_ctx *qedf, struct fcoe_cqe *cqe,
50961d8658bSDupuis, Chad 	struct qedf_ioreq *els_req);
51061d8658bSDupuis, Chad extern int qedf_send_rrq(struct qedf_ioreq *aborted_io_req);
51161d8658bSDupuis, Chad extern int qedf_send_adisc(struct qedf_rport *fcport, struct fc_frame *fp);
51261d8658bSDupuis, Chad extern int qedf_initiate_cleanup(struct qedf_ioreq *io_req,
51361d8658bSDupuis, Chad 	bool return_scsi_cmd_on_abts);
51461d8658bSDupuis, Chad extern void qedf_process_cleanup_compl(struct qedf_ctx *qedf,
51561d8658bSDupuis, Chad 	struct fcoe_cqe *cqe, struct qedf_ioreq *io_req);
51661d8658bSDupuis, Chad extern int qedf_initiate_tmf(struct scsi_cmnd *sc_cmd, u8 tm_flags);
51761d8658bSDupuis, Chad extern void qedf_process_tmf_compl(struct qedf_ctx *qedf, struct fcoe_cqe *cqe,
51861d8658bSDupuis, Chad 	struct qedf_ioreq *io_req);
51961d8658bSDupuis, Chad extern void qedf_process_cqe(struct qedf_ctx *qedf, struct fcoe_cqe *cqe);
52061d8658bSDupuis, Chad extern void qedf_scsi_done(struct qedf_ctx *qedf, struct qedf_ioreq *io_req,
52161d8658bSDupuis, Chad 	int result);
52261d8658bSDupuis, Chad extern void qedf_set_vlan_id(struct qedf_ctx *qedf, int vlan_id);
52361d8658bSDupuis, Chad extern void qedf_create_sysfs_ctx_attr(struct qedf_ctx *qedf);
52461d8658bSDupuis, Chad extern void qedf_remove_sysfs_ctx_attr(struct qedf_ctx *qedf);
52561d8658bSDupuis, Chad extern void qedf_capture_grc_dump(struct qedf_ctx *qedf);
526a66c6cd2SChad Dupuis bool qedf_wait_for_upload(struct qedf_ctx *qedf);
52761d8658bSDupuis, Chad extern void qedf_process_unsol_compl(struct qedf_ctx *qedf, uint16_t que_idx,
52861d8658bSDupuis, Chad 	struct fcoe_cqe *cqe);
52961d8658bSDupuis, Chad extern void qedf_restart_rport(struct qedf_rport *fcport);
53061d8658bSDupuis, Chad extern int qedf_send_rec(struct qedf_ioreq *orig_io_req);
53161d8658bSDupuis, Chad extern int qedf_post_io_req(struct qedf_rport *fcport,
53261d8658bSDupuis, Chad 	struct qedf_ioreq *io_req);
53361d8658bSDupuis, Chad extern void qedf_process_seq_cleanup_compl(struct qedf_ctx *qedf,
53461d8658bSDupuis, Chad 	struct fcoe_cqe *cqe, struct qedf_ioreq *io_req);
53561d8658bSDupuis, Chad extern int qedf_send_flogi(struct qedf_ctx *qedf);
536642a0b37SChad Dupuis extern void qedf_get_protocol_tlv_data(void *dev, void *data);
53761d8658bSDupuis, Chad extern void qedf_fp_io_handler(struct work_struct *work);
5388673daf4SChad Dupuis extern void qedf_get_generic_tlv_data(void *dev, struct qed_generic_tlvs *data);
5394b9b7fabSChad Dupuis extern void qedf_wq_grcdump(struct work_struct *work);
540a66c6cd2SChad Dupuis void qedf_stag_change_work(struct work_struct *work);
541a66c6cd2SChad Dupuis void qedf_ctx_soft_reset(struct fc_lport *lport);
54261d8658bSDupuis, Chad 
54361d8658bSDupuis, Chad #define FCOE_WORD_TO_BYTE  4
54461d8658bSDupuis, Chad #define QEDF_MAX_TASK_NUM	0xFFFF
54561d8658bSDupuis, Chad 
54661d8658bSDupuis, Chad struct fip_vlan {
54761d8658bSDupuis, Chad 	struct ethhdr eth;
54861d8658bSDupuis, Chad 	struct fip_header fip;
54961d8658bSDupuis, Chad 	struct {
55061d8658bSDupuis, Chad 		struct fip_mac_desc mac;
55161d8658bSDupuis, Chad 		struct fip_wwn_desc wwnn;
55261d8658bSDupuis, Chad 	} desc;
55361d8658bSDupuis, Chad };
55461d8658bSDupuis, Chad 
55561d8658bSDupuis, Chad /* SQ/CQ Sizes */
55661d8658bSDupuis, Chad #define GBL_RSVD_TASKS			16
55761d8658bSDupuis, Chad #define NUM_TASKS_PER_CONNECTION	1024
55861d8658bSDupuis, Chad #define NUM_RW_TASKS_PER_CONNECTION	512
55961d8658bSDupuis, Chad #define FCOE_PARAMS_CQ_NUM_ENTRIES	FCOE_PARAMS_NUM_TASKS
56061d8658bSDupuis, Chad 
56161d8658bSDupuis, Chad #define FCOE_PARAMS_CMDQ_NUM_ENTRIES	FCOE_PARAMS_NUM_TASKS
56261d8658bSDupuis, Chad #define SQ_NUM_ENTRIES			NUM_TASKS_PER_CONNECTION
56361d8658bSDupuis, Chad 
56461d8658bSDupuis, Chad #define QEDF_FCOE_PARAMS_GL_RQ_PI              0
56561d8658bSDupuis, Chad #define QEDF_FCOE_PARAMS_GL_CMD_PI             1
56661d8658bSDupuis, Chad 
56761d8658bSDupuis, Chad #define QEDF_READ                     (1 << 1)
56861d8658bSDupuis, Chad #define QEDF_WRITE                    (1 << 0)
56961d8658bSDupuis, Chad #define MAX_FIBRE_LUNS			0xffffffff
57061d8658bSDupuis, Chad 
571722477c4SThomas Bogendoerfer #define MIN_NUM_CPUS_MSIX(x)	min_t(u32, x->dev_info.num_cqs, \
572722477c4SThomas Bogendoerfer 					num_online_cpus())
57361d8658bSDupuis, Chad 
57461d8658bSDupuis, Chad /*
57561d8658bSDupuis, Chad  * PCI function probe defines
57661d8658bSDupuis, Chad  */
57761d8658bSDupuis, Chad /* Probe/remove called during normal PCI probe */
57861d8658bSDupuis, Chad #define	QEDF_MODE_NORMAL		0
57961d8658bSDupuis, Chad /* Probe/remove called from qed error recovery */
58061d8658bSDupuis, Chad #define QEDF_MODE_RECOVERY		1
58161d8658bSDupuis, Chad 
58261d8658bSDupuis, Chad #define SUPPORTED_25000baseKR_Full    (1<<27)
58361d8658bSDupuis, Chad #define SUPPORTED_50000baseKR2_Full   (1<<28)
58461d8658bSDupuis, Chad #define SUPPORTED_100000baseKR4_Full  (1<<29)
58561d8658bSDupuis, Chad #define SUPPORTED_100000baseCR4_Full  (1<<30)
58661d8658bSDupuis, Chad 
58761d8658bSDupuis, Chad #endif
588