xref: /illumos-gate/usr/src/uts/common/io/scsi/adapters/pvscsi/pvscsi_var.h (revision c0586b874d9179e81ca8a124fa6caf98fddb7696)
1 /*
2  * This file and its contents are supplied under the terms of the
3  * Common Development and Distribution License ("CDDL"), version 1.0.
4  * You may only use this file in accordance with the terms of version
5  * 1.0 of the CDDL.
6  *
7  * A full copy of the text of the CDDL should have accompanied this
8  * source.  A copy of the CDDL is also available via the Internet at
9  * http://www.illumos.org/license/CDDL.
10  */
11 
12 /*
13  * Copyright 2016 Nexenta Systems, Inc.
14  * Copyright 2022 RackTop Systems, Inc.
15  */
16 
17 #ifndef	_PVSCSI_VAR_H_
18 #define	_PVSCSI_VAR_H_
19 
20 typedef struct pvscsi_dma_buf {
21 	ddi_dma_handle_t dmah;
22 	caddr_t		addr;
23 	uint64_t	pa;
24 	ddi_acc_handle_t acch;
25 } pvscsi_dma_buf_t;
26 
27 #define	PVSCSI_MAX_IO_PAGES	256
28 #define	PVSCSI_MAX_IO_SIZE	(PVSCSI_MAX_IO_PAGES * PAGE_SIZE)
29 #define	PVSCSI_MAX_SG_SIZE	(PVSCSI_MAX_IO_PAGES + 1)
30 
31 typedef struct pvscsi_cmd {
32 	struct scsi_pkt		*pkt;
33 	struct scsi_arq_status	cmd_scb;
34 	uint8_t			cdb[SCSI_CDB_SIZE];
35 	size_t			cdblen;
36 	uint8_t			tag;
37 	uint8_t			scsi_status;
38 	uint32_t		host_status;
39 	uint64_t		transferred;
40 	boolean_t		poll;
41 	int			target;
42 	int			lun;
43 	uint32_t		ctx;
44 	list_node_t		queue_node;
45 	clock_t			timeout;
46 	clock_t			start;
47 	struct pvscsi_softc	*pvs;
48 	struct pvscsi_cmd	*next_cmd;
49 
50 	ddi_dma_handle_t	sgl_dmah;
51 	ddi_acc_handle_t	sgl_acch;
52 	uint64_t		sgl_pa;
53 	struct PVSCSISGElement	*sgl;
54 
55 	uint64_t		arq_pa;
56 	uint8_t			arq_sense[SENSE_LENGTH];
57 	ddi_dma_handle_t	arq_dmah;
58 
59 	uint32_t		dma_dir;
60 
61 	uint8_t			done;
62 	uint8_t			expired;
63 } pvscsi_cmd_t;
64 
65 typedef struct pvscsi_msg {
66 	struct pvscsi_softc	*pvs;
67 	int			type;
68 	int			target;
69 	int			lun;
70 } pvscsi_msg_t;
71 
72 typedef struct pvscsi_device {
73 	list_node_t		node;
74 	struct pvscsi_softc	*pvs;
75 	int			target;
76 	int			lun;
77 } pvscsi_device_t;
78 
79 typedef struct pvscsi_softc {
80 	dev_info_t		*dip;
81 	scsi_hba_tran_t		*tran;
82 	scsi_hba_tgtmap_t	*tgtmap;
83 	pvscsi_dma_buf_t	state_buf;
84 	pvscsi_dma_buf_t	req_ring_buf;
85 	uint_t			req_pages;
86 	uint_t			req_depth;
87 	pvscsi_dma_buf_t	cmp_ring_buf;
88 	uint_t			cmp_pages;
89 	pvscsi_dma_buf_t	msg_ring_buf;
90 	uint_t			msg_pages;
91 	ddi_acc_handle_t	mmio_handle;
92 	caddr_t			mmio_base;
93 	int			intr_cnt;
94 	int			intr_pri;
95 	int			intr_type;
96 	uint32_t		max_targets;
97 	ddi_intr_handle_t	intr_handles[PVSCSI_MAX_INTRS];
98 	list_t			cmd_queue;
99 	list_t			devices;
100 	kmutex_t		lock;
101 	ddi_taskq_t		*tq;
102 	timeout_id_t		timeout;
103 	boolean_t		detach;
104 } pvscsi_softc_t;
105 
106 #define	REQ_RING(pvs) \
107 	((struct PVSCSIRingReqDesc *)((pvs)->req_ring_buf.addr))
108 
109 #define	CMP_RING(pvs) \
110 	((struct PVSCSIRingCmpDesc *)((pvs)->cmp_ring_buf.addr))
111 
112 #define	MSG_RING(pvs) \
113 	((struct PVSCSIRingMsgDesc *)((pvs)->msg_ring_buf.addr))
114 
115 #define	RINGS_STATE(pvs) \
116 	((struct PVSCSIRingsState *)((pvs)->state_buf.addr))
117 
118 #define	PVSCSI_MAXTGTS	16
119 
120 #define	PAGE_SIZE	4096
121 #define	PAGE_SHIFT	12
122 
123 #define	PVSCSI_DEFAULT_NUM_PAGES_PER_RING	8
124 #define	PVSCSI_DEFAULT_NUM_PAGES_MSG_RING	1
125 
126 #endif	/* _PVSCSI_VAR_H_ */
127