[deliverable/linux.git] / drivers / scsi / lpfc / lpfc_scsi.h

/*******************************************************************
 * This file is part of the Emulex Linux Device Driver for         *
 * Fibre Channel Host Bus Adapters.                                *
 * Copyright (C) 2004-2012 Emulex.  All rights reserved.           *
 * EMULEX and SLI are trademarks of Emulex.                        *
 * www.emulex.com                                                  *
 *                                                                 *
 * This program is free software; you can redistribute it and/or   *
 * modify it under the terms of version 2 of the GNU General       *
 * Public License as published by the Free Software Foundation.    *
 * This program is distributed in the hope that it will be useful. *
 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
 * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
 * more details, a copy of which can be found in the file COPYING  *
 * included with this package.                                     *
 *******************************************************************/

#include <asm/byteorder.h>

struct lpfc_hba;
#define LPFC_FCP_CDB_LEN 16

#define list_remove_head(list, entry, type, member)		\
	do {							\
	entry = NULL;						\
	if (!list_empty(list)) {				\
		entry = list_entry((list)->next, type, member);	\
		list_del_init(&entry->member);			\
	}							\
	} while(0)

#define list_get_first(list, type, member)			\
	(list_empty(list)) ? NULL :				\
	list_entry((list)->next, type, member)

/* per-port data that is allocated in the FC transport for us */
struct lpfc_rport_data {
	struct lpfc_nodelist *pnode;	/* Pointer to the node structure. */
};

struct fcp_rsp {
	uint32_t rspRsvd1;	/* FC Word 0, byte 0:3 */
	uint32_t rspRsvd2;	/* FC Word 1, byte 0:3 */

	uint8_t rspStatus0;	/* FCP_STATUS byte 0 (reserved) */
	uint8_t rspStatus1;	/* FCP_STATUS byte 1 (reserved) */
	uint8_t rspStatus2;	/* FCP_STATUS byte 2 field validity */
#define RSP_LEN_VALID  0x01	/* bit 0 */
#define SNS_LEN_VALID  0x02	/* bit 1 */
#define RESID_OVER     0x04	/* bit 2 */
#define RESID_UNDER    0x08	/* bit 3 */
	uint8_t rspStatus3;	/* FCP_STATUS byte 3 SCSI status byte */

	uint32_t rspResId;	/* Residual xfer if residual count field set in
				   fcpStatus2 */
	/* Received in Big Endian format */
	uint32_t rspSnsLen;	/* Length of sense data in fcpSnsInfo */
	/* Received in Big Endian format */
	uint32_t rspRspLen;	/* Length of FCP response data in fcpRspInfo */
	/* Received in Big Endian format */

	uint8_t rspInfo0;	/* FCP_RSP_INFO byte 0 (reserved) */
	uint8_t rspInfo1;	/* FCP_RSP_INFO byte 1 (reserved) */
	uint8_t rspInfo2;	/* FCP_RSP_INFO byte 2 (reserved) */
	uint8_t rspInfo3;	/* FCP_RSP_INFO RSP_CODE byte 3 */

#define RSP_NO_FAILURE       0x00
#define RSP_DATA_BURST_ERR   0x01
#define RSP_CMD_FIELD_ERR    0x02
#define RSP_RO_MISMATCH_ERR  0x03
#define RSP_TM_NOT_SUPPORTED 0x04	/* Task mgmt function not supported */
#define RSP_TM_NOT_COMPLETED 0x05	/* Task mgmt function not performed */

	uint32_t rspInfoRsvd;	/* FCP_RSP_INFO bytes 4-7 (reserved) */

	uint8_t rspSnsInfo[128];
#define SNS_ILLEGAL_REQ 0x05	/* sense key is byte 3 ([2]) */
#define SNSCOD_BADCMD 0x20	/* sense code is byte 13 ([12]) */
};

struct fcp_cmnd {
	struct scsi_lun  fcp_lun;

	uint8_t fcpCntl0;	/* FCP_CNTL byte 0 (reserved) */
	uint8_t fcpCntl1;	/* FCP_CNTL byte 1 task codes */
#define  SIMPLE_Q        0x00
#define  HEAD_OF_Q       0x01
#define  ORDERED_Q       0x02
#define  ACA_Q           0x04
#define  UNTAGGED        0x05
	uint8_t fcpCntl2;	/* FCP_CTL byte 2 task management codes */
#define  FCP_ABORT_TASK_SET  0x02	/* Bit 1 */
#define  FCP_CLEAR_TASK_SET  0x04	/* bit 2 */
#define  FCP_BUS_RESET       0x08	/* bit 3 */
#define  FCP_LUN_RESET       0x10	/* bit 4 */
#define  FCP_TARGET_RESET    0x20	/* bit 5 */
#define  FCP_CLEAR_ACA       0x40	/* bit 6 */
#define  FCP_TERMINATE_TASK  0x80	/* bit 7 */
	uint8_t fcpCntl3;
#define  WRITE_DATA      0x01	/* Bit 0 */
#define  READ_DATA       0x02	/* Bit 1 */

	uint8_t fcpCdb[LPFC_FCP_CDB_LEN]; /* SRB cdb field is copied here */
	uint32_t fcpDl;		/* Total transfer length */

};

struct lpfc_scsicmd_bkt {
	uint32_t cmd_count;
};

struct lpfc_scsi_buf {
	struct list_head list;
	struct scsi_cmnd *pCmd;
	struct lpfc_rport_data *rdata;

	uint32_t timeout;

	uint16_t exch_busy;     /* SLI4 hba reported XB on complete WCQE */
	uint16_t status;	/* From IOCB Word 7- ulpStatus */
	uint32_t result;	/* From IOCB Word 4. */

	uint32_t   seg_cnt;	/* Number of scatter-gather segments returned by
				 * dma_map_sg.  The driver needs this for calls
				 * to dma_unmap_sg. */
	uint32_t prot_seg_cnt;  /* seg_cnt's counterpart for protection data */

	dma_addr_t nonsg_phys;	/* Non scatter-gather physical address. */

	/*
	 * data and dma_handle are the kernel virtual and bus address of the
	 * dma-able buffer containing the fcp_cmd, fcp_rsp and a scatter
	 * gather bde list that supports the sg_tablesize value.
	 */
	void *data;
	dma_addr_t dma_handle;

	struct fcp_cmnd *fcp_cmnd;
	struct fcp_rsp *fcp_rsp;
	struct ulp_bde64 *fcp_bpl;

	dma_addr_t dma_phys_bpl;

	/* cur_iocbq has phys of the dma-able buffer.
	 * Iotag is in here
	 */
	struct lpfc_iocbq cur_iocbq;
	wait_queue_head_t *waitq;
	unsigned long start_time;

#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
	/* Used to restore any changes to protection data for error injection */
	void *prot_data_segment;
	uint32_t prot_data;
	uint32_t prot_data_type;
#define	LPFC_INJERR_REFTAG	1
#define	LPFC_INJERR_APPTAG	2
#define	LPFC_INJERR_GUARD	3
#endif
};

#define LPFC_SCSI_DMA_EXT_SIZE 264
#define LPFC_BPL_SIZE          1024
#define MDAC_DIRECT_CMD                  0x22
Commit	Line	Data
dea3101e	1	/*******************************************************************
dea3101e	2	* This file is part of the Emulex Linux Device Driver for *
c44ce173	3	* Fibre Channel Host Bus Adapters. *
d85296cf	4	* Copyright (C) 2004-2012 Emulex. All rights reserved. *
c44ce173	5	* EMULEX and SLI are trademarks of Emulex. *
dea3101e	6	* www.emulex.com *
	7	* *
	8	* This program is free software; you can redistribute it and/or *
c44ce173 JSEC	9	* modify it under the terms of version 2 of the GNU General *
	10	* Public License as published by the Free Software Foundation. *
	11	* This program is distributed in the hope that it will be useful. *
	12	* ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND *
	13	* WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, *
	14	* FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
	15	* DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
	16	* TO BE LEGALLY INVALID. See the GNU General Public License for *
	17	* more details, a copy of which can be found in the file COPYING *
	18	* included with this package. *
dea3101e	19	*******************************************************************/
dea3101e	20
44456d37 OH	21	#include <asm/byteorder.h>
44456d37 OH	22
dea3101e	23	struct lpfc_hba;
df9e1b59	24	#define LPFC_FCP_CDB_LEN 16
dea3101e	25
dea3101e	26	#define list_remove_head(list, entry, type, member) \
286fc8f8 JB	27	do { \
286fc8f8 JB	28	entry = NULL; \
dea3101e	29	if (!list_empty(list)) { \
	30	entry = list_entry((list)->next, type, member); \
	31	list_del_init(&entry->member); \
286fc8f8 JB	32	} \
286fc8f8 JB	33	} while(0)
dea3101e	34
	35	#define list_get_first(list, type, member) \
	36	(list_empty(list)) ? NULL : \
	37	list_entry((list)->next, type, member)
	38
	39	/* per-port data that is allocated in the FC transport for us */
	40	struct lpfc_rport_data {
	41	struct lpfc_nodelist pnode; / Pointer to the node structure. */
	42	};
	43
	44	struct fcp_rsp {
	45	uint32_t rspRsvd1; /* FC Word 0, byte 0:3 */
	46	uint32_t rspRsvd2; /* FC Word 1, byte 0:3 */
	47
	48	uint8_t rspStatus0; /* FCP_STATUS byte 0 (reserved) */
	49	uint8_t rspStatus1; /* FCP_STATUS byte 1 (reserved) */
	50	uint8_t rspStatus2; /* FCP_STATUS byte 2 field validity */
	51	#define RSP_LEN_VALID 0x01 /* bit 0 */
	52	#define SNS_LEN_VALID 0x02 /* bit 1 */
	53	#define RESID_OVER 0x04 /* bit 2 */
	54	#define RESID_UNDER 0x08 /* bit 3 */
	55	uint8_t rspStatus3; /* FCP_STATUS byte 3 SCSI status byte */
	56
	57	uint32_t rspResId; /* Residual xfer if residual count field set in
	58	fcpStatus2 */
	59	/* Received in Big Endian format */
	60	uint32_t rspSnsLen; /* Length of sense data in fcpSnsInfo */
	61	/* Received in Big Endian format */
	62	uint32_t rspRspLen; /* Length of FCP response data in fcpRspInfo */
	63	/* Received in Big Endian format */
	64
	65	uint8_t rspInfo0; /* FCP_RSP_INFO byte 0 (reserved) */
	66	uint8_t rspInfo1; /* FCP_RSP_INFO byte 1 (reserved) */
	67	uint8_t rspInfo2; /* FCP_RSP_INFO byte 2 (reserved) */
	68	uint8_t rspInfo3; /* FCP_RSP_INFO RSP_CODE byte 3 */
	69
	70	#define RSP_NO_FAILURE 0x00
	71	#define RSP_DATA_BURST_ERR 0x01
	72	#define RSP_CMD_FIELD_ERR 0x02
	73	#define RSP_RO_MISMATCH_ERR 0x03
	74	#define RSP_TM_NOT_SUPPORTED 0x04 /* Task mgmt function not supported */
	75	#define RSP_TM_NOT_COMPLETED 0x05 /* Task mgmt function not performed */
	76
	77	uint32_t rspInfoRsvd; /* FCP_RSP_INFO bytes 4-7 (reserved) */
	78
	79	uint8_t rspSnsInfo[128];
	80	#define SNS_ILLEGAL_REQ 0x05 /* sense key is byte 3 ([2]) */
	81	#define SNSCOD_BADCMD 0x20 /* sense code is byte 13 ([12]) */
	82	};
	83
	84	struct fcp_cmnd {
91886523	85	struct scsi_lun fcp_lun;
dea3101e	86
	87	uint8_t fcpCntl0; /* FCP_CNTL byte 0 (reserved) */
	88	uint8_t fcpCntl1; /* FCP_CNTL byte 1 task codes */
	89	#define SIMPLE_Q 0x00
	90	#define HEAD_OF_Q 0x01
	91	#define ORDERED_Q 0x02
	92	#define ACA_Q 0x04
	93	#define UNTAGGED 0x05
	94	uint8_t fcpCntl2; /* FCP_CTL byte 2 task management codes */
	95	#define FCP_ABORT_TASK_SET 0x02 /* Bit 1 */
	96	#define FCP_CLEAR_TASK_SET 0x04 /* bit 2 */
	97	#define FCP_BUS_RESET 0x08 /* bit 3 */
	98	#define FCP_LUN_RESET 0x10 /* bit 4 */
	99	#define FCP_TARGET_RESET 0x20 /* bit 5 */
	100	#define FCP_CLEAR_ACA 0x40 /* bit 6 */
	101	#define FCP_TERMINATE_TASK 0x80 /* bit 7 */
	102	uint8_t fcpCntl3;
	103	#define WRITE_DATA 0x01 /* Bit 0 */
	104	#define READ_DATA 0x02 /* Bit 1 */
	105
df9e1b59	106	uint8_t fcpCdb[LPFC_FCP_CDB_LEN]; /* SRB cdb field is copied here */
dea3101e	107	uint32_t fcpDl; /* Total transfer length */
	108
	109	};
	110
ea2151b4 JS	111	struct lpfc_scsicmd_bkt {
	112	uint32_t cmd_count;
	113	};
	114
dea3101e	115	struct lpfc_scsi_buf {
	116	struct list_head list;
	117	struct scsi_cmnd *pCmd;
dea3101e	118	struct lpfc_rport_data *rdata;
	119
	120	uint32_t timeout;
	121
341af102	122	uint16_t exch_busy; /* SLI4 hba reported XB on complete WCQE */
dea3101e	123	uint16_t status; /* From IOCB Word 7- ulpStatus */
	124	uint32_t result; /* From IOCB Word 4. */
	125
	126	uint32_t seg_cnt; /* Number of scatter-gather segments returned by
	127	* dma_map_sg. The driver needs this for calls
	128	* to dma_unmap_sg. */
e2a0a9d6 JS	129	uint32_t prot_seg_cnt; /* seg_cnt's counterpart for protection data */
e2a0a9d6 JS	130
dea3101e	131	dma_addr_t nonsg_phys; /* Non scatter-gather physical address. */
	132
	133	/*
25985edc	134	* data and dma_handle are the kernel virtual and bus address of the
dea3101e	135	* dma-able buffer containing the fcp_cmd, fcp_rsp and a scatter
	136	* gather bde list that supports the sg_tablesize value.
	137	*/
	138	void *data;
	139	dma_addr_t dma_handle;
	140
	141	struct fcp_cmnd *fcp_cmnd;
	142	struct fcp_rsp *fcp_rsp;
	143	struct ulp_bde64 *fcp_bpl;
	144
da0436e9 JS	145	dma_addr_t dma_phys_bpl;
da0436e9 JS	146
dea3101e	147	/* cur_iocbq has phys of the dma-able buffer.
	148	* Iotag is in here
	149	*/
	150	struct lpfc_iocbq cur_iocbq;
fa61a54e	151	wait_queue_head_t *waitq;
977b5a0a	152	unsigned long start_time;
9a6b09c0 JS	153
	154	#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
	155	/* Used to restore any changes to protection data for error injection */
	156	void *prot_data_segment;
	157	uint32_t prot_data;
	158	uint32_t prot_data_type;
	159	#define LPFC_INJERR_REFTAG 1
	160	#define LPFC_INJERR_APPTAG 2
	161	#define LPFC_INJERR_GUARD 3
	162	#endif
dea3101e	163	};
	164
	165	#define LPFC_SCSI_DMA_EXT_SIZE 264
	166	#define LPFC_BPL_SIZE 1024
dea3101e	167	#define MDAC_DIRECT_CMD 0x22