Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * Oak Generic NCR5380 driver | |
3 | * | |
4 | * Copyright 1995-2002, Russell King | |
5 | */ | |
6 | ||
7 | #include <linux/module.h> | |
8 | #include <linux/signal.h> | |
1da177e4 LT |
9 | #include <linux/ioport.h> |
10 | #include <linux/delay.h> | |
11 | #include <linux/blkdev.h> | |
12 | #include <linux/init.h> | |
13 | ||
14 | #include <asm/ecard.h> | |
15 | #include <asm/io.h> | |
1da177e4 LT |
16 | |
17 | #include "../scsi.h" | |
18 | #include <scsi/scsi_host.h> | |
19 | ||
20 | #define AUTOSENSE | |
21 | /*#define PSEUDO_DMA*/ | |
22 | ||
23 | #define OAKSCSI_PUBLIC_RELEASE 1 | |
24 | ||
8b801ead RK |
25 | #define priv(host) ((struct NCR5380_hostdata *)(host)->hostdata) |
26 | #define NCR5380_local_declare() void __iomem *_base | |
27 | #define NCR5380_setup(host) _base = priv(host)->base | |
28 | ||
29 | #define NCR5380_read(reg) readb(_base + ((reg) << 2)) | |
30 | #define NCR5380_write(reg, value) writeb(value, _base + ((reg) << 2)) | |
1da177e4 LT |
31 | #define NCR5380_intr oakscsi_intr |
32 | #define NCR5380_queue_command oakscsi_queue_command | |
33 | #define NCR5380_proc_info oakscsi_proc_info | |
34 | ||
8b801ead RK |
35 | #define NCR5380_implementation_fields \ |
36 | void __iomem *base | |
1da177e4 LT |
37 | |
38 | #define BOARD_NORMAL 0 | |
39 | #define BOARD_NCR53C400 1 | |
40 | ||
41 | #include "../NCR5380.h" | |
42 | ||
43 | #undef START_DMA_INITIATOR_RECEIVE_REG | |
8b801ead | 44 | #define START_DMA_INITIATOR_RECEIVE_REG (128 + 7) |
1da177e4 LT |
45 | |
46 | const char * oakscsi_info (struct Scsi_Host *spnt) | |
47 | { | |
48 | return ""; | |
49 | } | |
50 | ||
8b801ead RK |
51 | #define STAT ((128 + 16) << 2) |
52 | #define DATA ((128 + 8) << 2) | |
1da177e4 LT |
53 | |
54 | static inline int NCR5380_pwrite(struct Scsi_Host *instance, unsigned char *addr, | |
55 | int len) | |
56 | { | |
8b801ead RK |
57 | void __iomem *base = priv(instance)->base; |
58 | ||
1da177e4 LT |
59 | printk("writing %p len %d\n",addr, len); |
60 | if(!len) return -1; | |
61 | ||
62 | while(1) | |
63 | { | |
64 | int status; | |
8b801ead | 65 | while (((status = readw(base + STAT)) & 0x100)==0); |
1da177e4 LT |
66 | } |
67 | } | |
68 | ||
69 | static inline int NCR5380_pread(struct Scsi_Host *instance, unsigned char *addr, | |
70 | int len) | |
71 | { | |
8b801ead | 72 | void __iomem *base = priv(instance)->base; |
1da177e4 LT |
73 | printk("reading %p len %d\n", addr, len); |
74 | while(len > 0) | |
75 | { | |
8b801ead | 76 | unsigned int status, timeout; |
1da177e4 LT |
77 | unsigned long b; |
78 | ||
79 | timeout = 0x01FFFFFF; | |
80 | ||
8b801ead | 81 | while (((status = readw(base + STAT)) & 0x100)==0) |
1da177e4 LT |
82 | { |
83 | timeout--; | |
84 | if(status & 0x200 || !timeout) | |
85 | { | |
8b801ead | 86 | printk("status = %08X\n", status); |
1da177e4 LT |
87 | return 1; |
88 | } | |
89 | } | |
8b801ead | 90 | |
1da177e4 LT |
91 | if(len >= 128) |
92 | { | |
8b801ead | 93 | readsw(base + DATA, addr, 128); |
1da177e4 LT |
94 | addr += 128; |
95 | len -= 128; | |
96 | } | |
97 | else | |
98 | { | |
8b801ead | 99 | b = (unsigned long) readw(base + DATA); |
1da177e4 LT |
100 | *addr ++ = b; |
101 | len -= 1; | |
102 | if(len) | |
103 | *addr ++ = b>>8; | |
104 | len -= 1; | |
105 | } | |
106 | } | |
107 | return 0; | |
108 | } | |
109 | ||
1da177e4 | 110 | #undef STAT |
8b801ead | 111 | #undef DATA |
1da177e4 LT |
112 | |
113 | #include "../NCR5380.c" | |
114 | ||
d0be4a7d | 115 | static struct scsi_host_template oakscsi_template = { |
1da177e4 LT |
116 | .module = THIS_MODULE, |
117 | .proc_info = oakscsi_proc_info, | |
118 | .name = "Oak 16-bit SCSI", | |
119 | .info = oakscsi_info, | |
120 | .queuecommand = oakscsi_queue_command, | |
121 | .eh_abort_handler = NCR5380_abort, | |
1da177e4 | 122 | .eh_bus_reset_handler = NCR5380_bus_reset, |
1da177e4 LT |
123 | .can_queue = 16, |
124 | .this_id = 7, | |
125 | .sg_tablesize = SG_ALL, | |
126 | .cmd_per_lun = 2, | |
127 | .use_clustering = DISABLE_CLUSTERING, | |
128 | .proc_name = "oakscsi", | |
129 | }; | |
130 | ||
131 | static int __devinit | |
132 | oakscsi_probe(struct expansion_card *ec, const struct ecard_id *id) | |
133 | { | |
134 | struct Scsi_Host *host; | |
135 | int ret = -ENOMEM; | |
136 | ||
8b801ead RK |
137 | ret = ecard_request_resources(ec); |
138 | if (ret) | |
1da177e4 LT |
139 | goto out; |
140 | ||
8b801ead RK |
141 | host = scsi_host_alloc(&oakscsi_template, sizeof(struct NCR5380_hostdata)); |
142 | if (!host) { | |
143 | ret = -ENOMEM; | |
144 | goto release; | |
145 | } | |
146 | ||
147 | priv(host)->base = ioremap(ecard_resource_start(ec, ECARD_RES_MEMC), | |
148 | ecard_resource_len(ec, ECARD_RES_MEMC)); | |
149 | if (!priv(host)->base) { | |
150 | ret = -ENOMEM; | |
151 | goto unreg; | |
152 | } | |
153 | ||
1da177e4 LT |
154 | host->irq = IRQ_NONE; |
155 | host->n_io_port = 255; | |
156 | ||
1da177e4 LT |
157 | NCR5380_init(host, 0); |
158 | ||
159 | printk("scsi%d: at port 0x%08lx irqs disabled", | |
160 | host->host_no, host->io_port); | |
161 | printk(" options CAN_QUEUE=%d CMD_PER_LUN=%d release=%d", | |
162 | host->can_queue, host->cmd_per_lun, OAKSCSI_PUBLIC_RELEASE); | |
163 | printk("\nscsi%d:", host->host_no); | |
164 | NCR5380_print_options(host); | |
165 | printk("\n"); | |
166 | ||
167 | ret = scsi_add_host(host, &ec->dev); | |
168 | if (ret) | |
8b801ead | 169 | goto out_unmap; |
1da177e4 LT |
170 | |
171 | scsi_scan_host(host); | |
172 | goto out; | |
173 | ||
8b801ead RK |
174 | out_unmap: |
175 | iounmap(priv(host)->base); | |
1da177e4 LT |
176 | unreg: |
177 | scsi_host_put(host); | |
8b801ead RK |
178 | release: |
179 | ecard_release_resources(ec); | |
1da177e4 LT |
180 | out: |
181 | return ret; | |
182 | } | |
183 | ||
184 | static void __devexit oakscsi_remove(struct expansion_card *ec) | |
185 | { | |
186 | struct Scsi_Host *host = ecard_get_drvdata(ec); | |
187 | ||
188 | ecard_set_drvdata(ec, NULL); | |
189 | scsi_remove_host(host); | |
190 | ||
191 | NCR5380_exit(host); | |
8b801ead | 192 | iounmap(priv(host)->base); |
1da177e4 | 193 | scsi_host_put(host); |
8b801ead | 194 | ecard_release_resources(ec); |
1da177e4 LT |
195 | } |
196 | ||
197 | static const struct ecard_id oakscsi_cids[] = { | |
198 | { MANU_OAK, PROD_OAK_SCSI }, | |
199 | { 0xffff, 0xffff } | |
200 | }; | |
201 | ||
202 | static struct ecard_driver oakscsi_driver = { | |
203 | .probe = oakscsi_probe, | |
204 | .remove = __devexit_p(oakscsi_remove), | |
205 | .id_table = oakscsi_cids, | |
206 | .drv = { | |
207 | .name = "oakscsi", | |
208 | }, | |
209 | }; | |
210 | ||
211 | static int __init oakscsi_init(void) | |
212 | { | |
213 | return ecard_register_driver(&oakscsi_driver); | |
214 | } | |
215 | ||
216 | static void __exit oakscsi_exit(void) | |
217 | { | |
218 | ecard_remove_driver(&oakscsi_driver); | |
219 | } | |
220 | ||
221 | module_init(oakscsi_init); | |
222 | module_exit(oakscsi_exit); | |
223 | ||
224 | MODULE_AUTHOR("Russell King"); | |
225 | MODULE_DESCRIPTION("Oak SCSI driver"); | |
226 | MODULE_LICENSE("GPL"); | |
227 |