aboutsummaryrefslogtreecommitdiff
path: root/drivers/scsi/wd719x.h
blob: 966ab0fb462169da5c2c332443e454e57b0840e7 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _WD719X_H_
#define _WD719X_H_

#define WD719X_SG 255		/* Scatter/gather size */

struct wd719x_sglist {
	__le32 ptr;
	__le32 length;
} __packed;

enum wd719x_card_type {
	WD719X_TYPE_UNKNOWN = 0,
	WD719X_TYPE_7193,
	WD719X_TYPE_7197,
	WD719X_TYPE_7296,
};

union wd719x_regs {
	__le32 all;	/* All Status at once */
	struct {
		u8 OPC;		/* Opcode register */
		u8 SCSI;	/* SCSI Errors */
		u8 SUE;		/* Spider unique Errors */
		u8 INT;		/* Interrupt Status */
	} bytes;
};

/* Spider Command Block (SCB) */
struct wd719x_scb {
	__le32 Int_SCB;	/* 00-03 Internal SCB link pointer (must be cleared) */
	u8 SCB_opcode;	/* 04 SCB Command opcode */
	u8 CDB_tag;	/* 05 SCSI Tag byte for CDB queues (0 if untagged) */
	u8 lun;		/* 06 SCSI LUN */
	u8 devid;	/* 07 SCSI Device ID */
	u8 CDB[16];	/* 08-23 SCSI CDB (16 bytes as defined by ANSI spec. */
	__le32 data_p;	/* 24-27 Data transfer address (or SG list address) */
	__le32 data_length; /* 28-31 Data transfer Length (or SG list length) */
	__le32 CDB_link;    /* 32-35 SCSI CDB Link Ptr */
	__le32 sense_buf;   /* 36-39 Auto request sense buffer address */
	u8 sense_buf_length;/* 40 Auto request sense transfer length */
	u8 reserved;	/* 41 reserved */
	u8 SCB_options;	/* 42 SCB-options */
	u8 SCB_tag_msg;	/* 43 Tagged messages options */
	/* Not filled in by host */
	__le32 req_ptr;	/* 44-47 Ptr to Host Request returned on interrupt */
	u8 host_opcode;	/* 48 Host Command Opcode (same as AMR_00) */
	u8 scsi_stat;	/* 49 SCSI Status returned */
	u8 ret_error;	/* 50 SPIDER Unique Error Code returned (SUE) */
	u8 int_stat;	/* 51 Message u8 / Interrupt Status byte returned */
	__le32 transferred; /* 52-55 Bytes Transferred */
	u8 last_trans[3];  /* 56-58 Bytes Transferred in last session */
	u8 length;	/* 59 SCSI Messages Length (1-8) */
	u8 sync_offset;	/* 60 Synchronous offset */
	u8 sync_rate;	/* 61 Synchronous rate */
	u8 flags[2];	/* 62-63 SCB specific flags (local to each thread) */
	/* everything below is for driver use (not used by card) */
	dma_addr_t phys;	/* bus address of the SCB */
	dma_addr_t dma_handle;
	struct scsi_cmnd *cmd;	/* a copy of the pointer we were passed */
	struct list_head list;
	struct wd719x_sglist sg_list[WD719X_SG] __aligned(8); /* SG list */
} __packed;

struct wd719x {
	struct Scsi_Host *sh;	/* pointer to host structure */
	struct pci_dev *pdev;
	void __iomem *base;
	enum wd719x_card_type type; /* type of card */
	void *fw_virt;		/* firmware buffer CPU address */
	dma_addr_t fw_phys;	/* firmware buffer bus address */
	size_t fw_size;		/* firmware buffer size */
	struct wd719x_host_param *params; /* host parameters (EEPROM) */
	dma_addr_t params_phys; /* host parameters bus address */
	void *hash_virt;	/* hash table CPU address */
	dma_addr_t hash_phys;	/* hash table bus address */
	struct list_head active_scbs;
};

/* timeout delays in microsecs */
#define WD719X_WAIT_FOR_CMD_READY	500
#define WD719X_WAIT_FOR_RISC		2000
#define WD719X_WAIT_FOR_SCSI_RESET	3000000

/* All commands except 0x00 generate an interrupt */
#define WD719X_CMD_READY	0x00 /* Command register ready (or noop) */
#define WD719X_CMD_INIT_RISC	0x01 /* Initialize RISC */
/* 0x02 is reserved */
#define WD719X_CMD_BUSRESET	0x03 /* Assert SCSI bus reset */
#define WD719X_CMD_READ_FIRMVER	0x04 /* Read the Firmware Revision */
#define WD719X_CMD_ECHO_BYTES	0x05 /* Echo command bytes (DW) */
/* 0x06 is reserved */
/* 0x07 is reserved */
#define WD719X_CMD_GET_PARAM	0x08 /* Get programmable parameters */
#define WD719X_CMD_SET_PARAM	0x09 /* Set programmable parameters */
#define WD719X_CMD_SLEEP	0x0a /* Put SPIDER to sleep */
#define WD719X_CMD_READ_INIT	0x0b /* Read initialization parameters */
#define WD719X_CMD_RESTORE_INIT	0x0c /* Restore initialization parameters */
/* 0x0d is reserved */
/* 0x0e is reserved */
/* 0x0f is reserved */
#define WD719X_CMD_ABORT_TAG	0x10 /* Send Abort tag message to target */
#define WD719X_CMD_ABORT	0x11 /* Send Abort message to target */
#define WD719X_CMD_RESET	0x12 /* Send Reset message to target */
#define WD719X_CMD_INIT_SCAM	0x13 /* Initiate SCAM */
#define WD719X_CMD_GET_SYNC	0x14 /* Get synchronous rates */
#define WD719X_CMD_SET_SYNC	0x15 /* Set synchronous rates */
#define WD719X_CMD_GET_WIDTH	0x16 /* Get SCSI bus width */
#define WD719X_CMD_SET_WIDTH	0x17 /* Set SCSI bus width */
#define WD719X_CMD_GET_TAGS	0x18 /* Get tag flags */
#define WD719X_CMD_SET_TAGS	0x19 /* Set tag flags */
#define WD719X_CMD_GET_PARAM2	0x1a /* Get programmable params (format 2) */
#define WD719X_CMD_SET_PARAM2	0x1b /* Set programmable params (format 2) */
/* Commands with request pointers (mailbox) */
#define WD719X_CMD_PROCESS_SCB	0x80 /* Process SCSI Control Block (SCB) */
/* No interrupt generated on acceptance of SCB pointer */

/* interrupt status defines */
#define WD719X_INT_NONE		0x00 /* No interrupt pending */
#define WD719X_INT_NOERRORS	0x01 /* Command completed with no errors */
#define WD719X_INT_LINKNOERRORS	0x02 /* link cmd completed with no errors */
#define WD719X_INT_LINKNOSTATUS	0x03 /* link cmd completed with no flag set */
#define WD719X_INT_ERRORSLOGGED	0x04 /* cmd completed with errors logged */
#define WD719X_INT_SPIDERFAILED	0x05 /* cmd failed without valid SCSI status */
#define WD719X_INT_BADINT	0x80 /* unsolicited interrupt */
#define WD719X_INT_PIOREADY	0xf0 /* data ready for PIO output */

/* Spider Unique Error Codes (SUE) */
#define WD719X_SUE_NOERRORS	0x00 /* No errors detected by SPIDER */
#define WD719X_SUE_REJECTED	0x01 /* Command Rejected (bad opcode/param) */
#define WD719X_SUE_SCBQFULL	0x02 /* SCB queue full */
/* 0x03 is reserved */
#define WD719X_SUE_TERM		0x04 /* Host terminated SCB via primative cmd */
#define WD719X_SUE_CHAN1PAR	0x05 /* PCI Channel 1 parity error occurred */
#define WD719X_SUE_CHAN1ABORT	0x06 /* PCI Channel 1 system abort occurred */
#define WD719X_SUE_CHAN23PAR	0x07 /* PCI Channel 2/3 parity error occurred */
#define WD719X_SUE_CHAN23ABORT	0x08 /* PCI Channel 2/3 system abort occurred */
#define WD719X_SUE_TIMEOUT	0x10 /* Selection/reselection timeout */
#define WD719X_SUE_RESET	0x11 /* SCSI bus reset occurred */
#define WD719X_SUE_BUSERROR	0x12 /* SCSI bus error */
#define WD719X_SUE_WRONGWAY	0x13 /* Wrong data transfer dir set by target */
#define WD719X_SUE_BADPHASE	0x14 /* SCSI phase illegal or unexpected */
#define WD719X_SUE_TOOLONG	0x15 /* target requested too much data */
#define WD719X_SUE_BUSFREE	0x16 /* Unexpected SCSI bus free */
#define WD719X_SUE_ARSDONE	0x17 /* Auto request sense executed */
#define WD719X_SUE_IGNORED	0x18 /* SCSI message was ignored by target */
#define WD719X_SUE_WRONGTAGS	0x19 /* Tagged SCB & tags off (or vice versa) */
#define WD719X_SUE_BADTAGS	0x1a /* Wrong tag message type for target */
#define WD719X_SUE_NOSCAMID	0x1b /* No SCAM soft ID available */

/* code sizes */
#define	WD719X_HASH_TABLE_SIZE	4096

/* Advanced Mode Registers */
/* Regs 0x00..0x1f are for Advanced Mode of the card (RISC is running). */
#define WD719X_AMR_COMMAND		0x00
#define WD719X_AMR_CMD_PARAM		0x01
#define WD719X_AMR_CMD_PARAM_2		0x02
#define WD719X_AMR_CMD_PARAM_3		0x03
#define WD719X_AMR_SCB_IN		0x04

#define WD719X_AMR_BIOS_SHARE_INT	0x0f

#define WD719X_AMR_SCB_OUT		0x18
#define WD719X_AMR_OP_CODE		0x1c
#define WD719X_AMR_SCSI_STATUS		0x1d
#define WD719X_AMR_SCB_ERROR		0x1e
#define WD719X_AMR_INT_STATUS		0x1f

#define WD719X_DISABLE_INT	0x80

/* SCB flags */
#define WD719X_SCB_FLAGS_CHECK_DIRECTION	0x01
#define WD719X_SCB_FLAGS_PCI_TO_SCSI		0x02
#define WD719X_SCB_FLAGS_AUTO_REQUEST_SENSE	0x10
#define WD719X_SCB_FLAGS_DO_SCATTER_GATHER	0x20
#define WD719X_SCB_FLAGS_NO_DISCONNECT		0x40

/* PCI Registers used for reset, initial code download */
/* Regs 0x20..0x3f are for Normal (DOS) mode (RISC is asleep). */
#define WD719X_PCI_GPIO_CONTROL		0x3C
#define WD719X_PCI_GPIO_DATA		0x3D
#define WD719X_PCI_PORT_RESET		0x3E
#define WD719X_PCI_MODE_SELECT		0x3F

#define WD719X_PCI_EXTERNAL_ADDR	0x60
#define WD719X_PCI_INTERNAL_ADDR	0x64
#define WD719X_PCI_DMA_TRANSFER_SIZE	0x66
#define WD719X_PCI_CHANNEL2_3CMD	0x68
#define WD719X_PCI_CHANNEL2_3STATUS	0x69

#define WD719X_GPIO_ID_BITS		0x0a
#define WD719X_PRAM_BASE_ADDR		0x00

/* codes written to or read from the card */
#define WD719X_PCI_RESET		 0x01
#define WD719X_ENABLE_ADVANCE_MODE	 0x01

#define WD719X_START_CHANNEL2_3DMA	 0x17
#define WD719X_START_CHANNEL2_3DONE	 0x01
#define WD719X_START_CHANNEL2_3ABORT	 0x20

/* 33C296 GPIO bits for EEPROM pins */
#define WD719X_EE_DI	(1 << 1)
#define WD719X_EE_CS	(1 << 2)
#define WD719X_EE_CLK	(1 << 3)
#define WD719X_EE_DO	(1 << 4)

/* EEPROM contents */
struct wd719x_eeprom_header {
	u8 sig1;
	u8 sig2;
	u8 version;
	u8 checksum;
	u8 cfg_offset;
	u8 cfg_size;
	u8 setup_offset;
	u8 setup_size;
} __packed;

#define WD719X_EE_SIG1		0
#define WD719X_EE_SIG2		1
#define WD719X_EE_VERSION	2
#define WD719X_EE_CHECKSUM	3
#define WD719X_EE_CFG_OFFSET	4
#define WD719X_EE_CFG_SIZE	5
#define WD719X_EE_SETUP_OFFSET	6
#define WD719X_EE_SETUP_SIZE	7

#define WD719X_EE_SCSI_ID_MASK	0xf

/* SPIDER Host Parameters Block (=EEPROM configuration block) */
struct wd719x_host_param {
	u8 ch_1_th;	/* FIFO threshold */
	u8 scsi_conf;	/* SCSI configuration */
	u8 own_scsi_id;	/* controller SCSI ID */
	u8 sel_timeout;	/* selection timeout*/
	u8 sleep_timer;	/* seep timer */
	__le16 cdb_size;/* CDB size groups */
	__le16 tag_en;	/* Tag msg enables (ID 0-15) */
	u8 scsi_pad;	/* SCSI pad control */
	__le32 wide;	/* WIDE msg options (ID 0-15) */
	__le32 sync;	/* SYNC msg options (ID 0-15) */
	u8 soft_mask;	/* soft error mask */
	u8 unsol_mask;	/* unsolicited error mask */
} __packed;

#endif /* _WD719X_H_ */