1 /*
2 * Device driver for the SYMBIOS/LSILOGIC 53C8XX and 53C1010 family
3 * of PCI-SCSI IO processors.
4 *
5 * Copyright (C) 1999-2001 Gerard Roudier <groudier@free.fr>
6 *
7 * This driver is derived from the Linux sym53c8xx driver.
8 * Copyright (C) 1998-2000 Gerard Roudier
9 *
10 * The sym53c8xx driver is derived from the ncr53c8xx driver that had been
11 * a port of the FreeBSD ncr driver to Linux-1.2.13.
12 *
13 * The original ncr driver has been written for 386bsd and FreeBSD by
14 * Wolfgang Stanglmeier <wolf@cologne.de>
15 * Stefan Esser <se@mi.Uni-Koeln.de>
16 * Copyright (C) 1994 Wolfgang Stanglmeier
17 *
18 * Other major contributions:
19 *
20 * NVRAM detection and reading.
21 * Copyright (C) 1997 Richard Waltham <dormouse@farsrobt.demon.co.uk>
22 *
23 *-----------------------------------------------------------------------------
24 *
25 * This program is free software; you can redistribute it and/or modify
26 * it under the terms of the GNU General Public License as published by
27 * the Free Software Foundation; either version 2 of the License, or
28 * (at your option) any later version.
29 *
30 * This program is distributed in the hope that it will be useful,
31 * but WITHOUT ANY WARRANTY; without even the implied warranty of
32 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
33 * GNU General Public License for more details.
34 *
35 * You should have received a copy of the GNU General Public License
36 * along with this program; if not, write to the Free Software
37 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
38 */
39
40 #ifndef SYM_NVRAM_H
41 #define SYM_NVRAM_H
42
43 #include "sym53c8xx.h"
44
45 /*
46 * Symbios NVRAM data format
47 */
48 #define SYMBIOS_NVRAM_SIZE 368
49 #define SYMBIOS_NVRAM_ADDRESS 0x100
50
51 struct Symbios_nvram {
52 /* Header 6 bytes */
53 u_short type; /* 0x0000 */
54 u_short byte_count; /* excluding header/trailer */
55 u_short checksum;
56
57 /* Controller set up 20 bytes */
58 u_char v_major; /* 0x00 */
59 u_char v_minor; /* 0x30 */
60 u32 boot_crc;
61 u_short flags;
62 #define SYMBIOS_SCAM_ENABLE (1)
63 #define SYMBIOS_PARITY_ENABLE (1<<1)
64 #define SYMBIOS_VERBOSE_MSGS (1<<2)
65 #define SYMBIOS_CHS_MAPPING (1<<3)
66 #define SYMBIOS_NO_NVRAM (1<<3) /* ??? */
67 u_short flags1;
68 #define SYMBIOS_SCAN_HI_LO (1)
69 u_short term_state;
70 #define SYMBIOS_TERM_CANT_PROGRAM (0)
71 #define SYMBIOS_TERM_ENABLED (1)
72 #define SYMBIOS_TERM_DISABLED (2)
73 u_short rmvbl_flags;
74 #define SYMBIOS_RMVBL_NO_SUPPORT (0)
75 #define SYMBIOS_RMVBL_BOOT_DEVICE (1)
76 #define SYMBIOS_RMVBL_MEDIA_INSTALLED (2)
77 u_char host_id;
78 u_char num_hba; /* 0x04 */
79 u_char num_devices; /* 0x10 */
80 u_char max_scam_devices; /* 0x04 */
81 u_char num_valid_scam_devices; /* 0x00 */
82 u_char flags2;
83 #define SYMBIOS_AVOID_BUS_RESET (1<<2)
84
85 /* Boot order 14 bytes * 4 */
86 struct Symbios_host{
87 u_short type; /* 4:8xx / 0:nok */
88 u_short device_id; /* PCI device id */
89 u_short vendor_id; /* PCI vendor id */
90 u_char bus_nr; /* PCI bus number */
91 u_char device_fn; /* PCI device/function number << 3*/
92 u_short word8;
93 u_short flags;
94 #define SYMBIOS_INIT_SCAN_AT_BOOT (1)
95 u_short io_port; /* PCI io_port address */
96 } host[4];
97
98 /* Targets 8 bytes * 16 */
99 struct Symbios_target {
100 u_char flags;
101 #define SYMBIOS_DISCONNECT_ENABLE (1)
102 #define SYMBIOS_SCAN_AT_BOOT_TIME (1<<1)
103 #define SYMBIOS_SCAN_LUNS (1<<2)
104 #define SYMBIOS_QUEUE_TAGS_ENABLED (1<<3)
105 u_char rsvd;
106 u_char bus_width; /* 0x08/0x10 */
107 u_char sync_offset;
108 u_short sync_period; /* 4*period factor */
109 u_short timeout;
110 } target[16];
111 /* Scam table 8 bytes * 4 */
112 struct Symbios_scam {
113 u_short id;
114 u_short method;
115 #define SYMBIOS_SCAM_DEFAULT_METHOD (0)
116 #define SYMBIOS_SCAM_DONT_ASSIGN (1)
117 #define SYMBIOS_SCAM_SET_SPECIFIC_ID (2)
118 #define SYMBIOS_SCAM_USE_ORDER_GIVEN (3)
119 u_short status;
120 #define SYMBIOS_SCAM_UNKNOWN (0)
121 #define SYMBIOS_SCAM_DEVICE_NOT_FOUND (1)
122 #define SYMBIOS_SCAM_ID_NOT_SET (2)
123 #define SYMBIOS_SCAM_ID_VALID (3)
124 u_char target_id;
125 u_char rsvd;
126 } scam[4];
127
128 u_char spare_devices[15*8];
129 u_char trailer[6]; /* 0xfe 0xfe 0x00 0x00 0x00 0x00 */
130 };
131 typedef struct Symbios_nvram Symbios_nvram;
132 typedef struct Symbios_host Symbios_host;
133 typedef struct Symbios_target Symbios_target;
134 typedef struct Symbios_scam Symbios_scam;
135
136 /*
137 * Tekram NvRAM data format.
138 */
139 #define TEKRAM_NVRAM_SIZE 64
140 #define TEKRAM_93C46_NVRAM_ADDRESS 0
141 #define TEKRAM_24C16_NVRAM_ADDRESS 0x40
142
143 struct Tekram_nvram {
144 struct Tekram_target {
145 u_char flags;
146 #define TEKRAM_PARITY_CHECK (1)
147 #define TEKRAM_SYNC_NEGO (1<<1)
148 #define TEKRAM_DISCONNECT_ENABLE (1<<2)
149 #define TEKRAM_START_CMD (1<<3)
150 #define TEKRAM_TAGGED_COMMANDS (1<<4)
151 #define TEKRAM_WIDE_NEGO (1<<5)
152 u_char sync_index;
153 u_short word2;
154 } target[16];
155 u_char host_id;
156 u_char flags;
157 #define TEKRAM_MORE_THAN_2_DRIVES (1)
158 #define TEKRAM_DRIVES_SUP_1GB (1<<1)
159 #define TEKRAM_RESET_ON_POWER_ON (1<<2)
160 #define TEKRAM_ACTIVE_NEGATION (1<<3)
161 #define TEKRAM_IMMEDIATE_SEEK (1<<4)
162 #define TEKRAM_SCAN_LUNS (1<<5)
163 #define TEKRAM_REMOVABLE_FLAGS (3<<6) /* 0: disable; */
164 /* 1: boot device; 2:all */
165 u_char boot_delay_index;
166 u_char max_tags_index;
167 u_short flags1;
168 #define TEKRAM_F2_F6_ENABLED (1)
169 u_short spare[29];
170 };
171 typedef struct Tekram_nvram Tekram_nvram;
172 typedef struct Tekram_target Tekram_target;
173
174 #ifndef CONFIG_PARISC
175 struct pdc_initiator { int dummy; };
176 #endif
177
178 /*
179 * Union of supported NVRAM formats.
180 */
181 struct sym_nvram {
182 int type;
183 #define SYM_SYMBIOS_NVRAM (1)
184 #define SYM_TEKRAM_NVRAM (2)
185 #define SYM_PARISC_PDC (3)
186 #if SYM_CONF_NVRAM_SUPPORT
187 union {
188 Symbios_nvram Symbios;
189 Tekram_nvram Tekram;
190 struct pdc_initiator parisc;
191 } data;
192 #endif
193 };
194
195 #if SYM_CONF_NVRAM_SUPPORT
196 void sym_nvram_setup_host(struct Scsi_Host *shost, struct sym_hcb *np, struct sym_nvram *nvram);
197 void sym_nvram_setup_target (struct sym_tcb *tp, int target, struct sym_nvram *nvp);
198 int sym_read_nvram (struct sym_device *np, struct sym_nvram *nvp);
199 char *sym_nvram_type(struct sym_nvram *nvp);
200 #else
201 static inline void sym_nvram_setup_host(struct Scsi_Host *shost, struct sym_hcb *np, struct sym_nvram *nvram) { }
202 static inline void sym_nvram_setup_target(struct sym_tcb *tp, struct sym_nvram *nvram) { }
203 static inline int sym_read_nvram(struct sym_device *np, struct sym_nvram *nvp)
204 {
205 nvp->type = 0;
206 return 0;
207 }
208 static inline char *sym_nvram_type(struct sym_nvram *nvp)
209 {
210 return "No NVRAM";
211 }
212 #endif
213
214 #endif /* SYM_NVRAM_H */
215
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