Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * Generic Generic NCR5380 driver | |
3 | * | |
4 | * Copyright 1995-2002, Russell King | |
5 | */ | |
6 | #include <linux/module.h> | |
7 | #include <linux/signal.h> | |
1da177e4 LT |
8 | #include <linux/ioport.h> |
9 | #include <linux/delay.h> | |
10 | #include <linux/blkdev.h> | |
11 | #include <linux/init.h> | |
12 | ||
13 | #include <asm/ecard.h> | |
14 | #include <asm/io.h> | |
1da177e4 LT |
15 | #include <asm/system.h> |
16 | ||
17 | #include "../scsi.h" | |
18 | #include <scsi/scsi_host.h> | |
19 | ||
20 | #include <scsi/scsicam.h> | |
21 | ||
22 | #define AUTOSENSE | |
23 | #define PSEUDO_DMA | |
24 | ||
25 | #define CUMANASCSI_PUBLIC_RELEASE 1 | |
26 | ||
8b801ead | 27 | #define priv(host) ((struct NCR5380_hostdata *)(host)->hostdata) |
1da177e4 LT |
28 | #define NCR5380_local_declare() struct Scsi_Host *_instance |
29 | #define NCR5380_setup(instance) _instance = instance | |
30 | #define NCR5380_read(reg) cumanascsi_read(_instance, reg) | |
31 | #define NCR5380_write(reg, value) cumanascsi_write(_instance, reg, value) | |
32 | #define NCR5380_intr cumanascsi_intr | |
33 | #define NCR5380_queue_command cumanascsi_queue_command | |
34 | #define NCR5380_proc_info cumanascsi_proc_info | |
35 | ||
8b801ead RK |
36 | #define NCR5380_implementation_fields \ |
37 | unsigned ctrl; \ | |
38 | void __iomem *base; \ | |
39 | void __iomem *dma | |
40 | ||
1da177e4 LT |
41 | #define BOARD_NORMAL 0 |
42 | #define BOARD_NCR53C400 1 | |
43 | ||
44 | #include "../NCR5380.h" | |
45 | ||
46 | void cumanascsi_setup(char *str, int *ints) | |
47 | { | |
48 | } | |
49 | ||
50 | const char *cumanascsi_info(struct Scsi_Host *spnt) | |
51 | { | |
52 | return ""; | |
53 | } | |
54 | ||
8b801ead RK |
55 | #define CTRL 0x16fc |
56 | #define STAT 0x2004 | |
57 | #define L(v) (((v)<<16)|((v) & 0x0000ffff)) | |
58 | #define H(v) (((v)>>16)|((v) & 0xffff0000)) | |
1da177e4 LT |
59 | |
60 | static inline int | |
8b801ead | 61 | NCR5380_pwrite(struct Scsi_Host *host, unsigned char *addr, int len) |
1da177e4 | 62 | { |
1da177e4 | 63 | unsigned long *laddr; |
8b801ead | 64 | void __iomem *dma = priv(host)->dma + 0x2000; |
1da177e4 LT |
65 | |
66 | if(!len) return 0; | |
67 | ||
8b801ead | 68 | writeb(0x02, priv(host)->base + CTRL); |
1da177e4 LT |
69 | laddr = (unsigned long *)addr; |
70 | while(len >= 32) | |
71 | { | |
8b801ead | 72 | unsigned int status; |
1da177e4 | 73 | unsigned long v; |
8b801ead | 74 | status = readb(priv(host)->base + STAT); |
1da177e4 LT |
75 | if(status & 0x80) |
76 | goto end; | |
77 | if(!(status & 0x40)) | |
78 | continue; | |
8b801ead RK |
79 | v=*laddr++; writew(L(v), dma); writew(H(v), dma); |
80 | v=*laddr++; writew(L(v), dma); writew(H(v), dma); | |
81 | v=*laddr++; writew(L(v), dma); writew(H(v), dma); | |
82 | v=*laddr++; writew(L(v), dma); writew(H(v), dma); | |
83 | v=*laddr++; writew(L(v), dma); writew(H(v), dma); | |
84 | v=*laddr++; writew(L(v), dma); writew(H(v), dma); | |
85 | v=*laddr++; writew(L(v), dma); writew(H(v), dma); | |
86 | v=*laddr++; writew(L(v), dma); writew(H(v), dma); | |
1da177e4 LT |
87 | len -= 32; |
88 | if(len == 0) | |
89 | break; | |
90 | } | |
91 | ||
92 | addr = (unsigned char *)laddr; | |
8b801ead RK |
93 | writeb(0x12, priv(host)->base + CTRL); |
94 | ||
1da177e4 LT |
95 | while(len > 0) |
96 | { | |
8b801ead RK |
97 | unsigned int status; |
98 | status = readb(priv(host)->base + STAT); | |
1da177e4 LT |
99 | if(status & 0x80) |
100 | goto end; | |
101 | if(status & 0x40) | |
102 | { | |
8b801ead | 103 | writeb(*addr++, dma); |
1da177e4 LT |
104 | if(--len == 0) |
105 | break; | |
106 | } | |
107 | ||
8b801ead | 108 | status = readb(priv(host)->base + STAT); |
1da177e4 LT |
109 | if(status & 0x80) |
110 | goto end; | |
111 | if(status & 0x40) | |
112 | { | |
8b801ead | 113 | writeb(*addr++, dma); |
1da177e4 LT |
114 | if(--len == 0) |
115 | break; | |
116 | } | |
117 | } | |
118 | end: | |
8b801ead | 119 | writeb(priv(host)->ctrl | 0x40, priv(host)->base + CTRL); |
1da177e4 LT |
120 | return len; |
121 | } | |
122 | ||
123 | static inline int | |
8b801ead | 124 | NCR5380_pread(struct Scsi_Host *host, unsigned char *addr, int len) |
1da177e4 | 125 | { |
1da177e4 | 126 | unsigned long *laddr; |
8b801ead | 127 | void __iomem *dma = priv(host)->dma + 0x2000; |
1da177e4 LT |
128 | |
129 | if(!len) return 0; | |
130 | ||
8b801ead | 131 | writeb(0x00, priv(host)->base + CTRL); |
1da177e4 LT |
132 | laddr = (unsigned long *)addr; |
133 | while(len >= 32) | |
134 | { | |
8b801ead RK |
135 | unsigned int status; |
136 | status = readb(priv(host)->base + STAT); | |
1da177e4 LT |
137 | if(status & 0x80) |
138 | goto end; | |
139 | if(!(status & 0x40)) | |
140 | continue; | |
8b801ead RK |
141 | *laddr++ = readw(dma) | (readw(dma) << 16); |
142 | *laddr++ = readw(dma) | (readw(dma) << 16); | |
143 | *laddr++ = readw(dma) | (readw(dma) << 16); | |
144 | *laddr++ = readw(dma) | (readw(dma) << 16); | |
145 | *laddr++ = readw(dma) | (readw(dma) << 16); | |
146 | *laddr++ = readw(dma) | (readw(dma) << 16); | |
147 | *laddr++ = readw(dma) | (readw(dma) << 16); | |
148 | *laddr++ = readw(dma) | (readw(dma) << 16); | |
1da177e4 LT |
149 | len -= 32; |
150 | if(len == 0) | |
151 | break; | |
152 | } | |
153 | ||
154 | addr = (unsigned char *)laddr; | |
8b801ead RK |
155 | writeb(0x10, priv(host)->base + CTRL); |
156 | ||
1da177e4 LT |
157 | while(len > 0) |
158 | { | |
8b801ead RK |
159 | unsigned int status; |
160 | status = readb(priv(host)->base + STAT); | |
1da177e4 LT |
161 | if(status & 0x80) |
162 | goto end; | |
163 | if(status & 0x40) | |
164 | { | |
8b801ead | 165 | *addr++ = readb(dma); |
1da177e4 LT |
166 | if(--len == 0) |
167 | break; | |
168 | } | |
169 | ||
8b801ead | 170 | status = readb(priv(host)->base + STAT); |
1da177e4 LT |
171 | if(status & 0x80) |
172 | goto end; | |
173 | if(status & 0x40) | |
174 | { | |
8b801ead | 175 | *addr++ = readb(dma); |
1da177e4 LT |
176 | if(--len == 0) |
177 | break; | |
178 | } | |
179 | } | |
180 | end: | |
8b801ead | 181 | writeb(priv(host)->ctrl | 0x40, priv(host)->base + CTRL); |
1da177e4 LT |
182 | return len; |
183 | } | |
184 | ||
8b801ead RK |
185 | static unsigned char cumanascsi_read(struct Scsi_Host *host, unsigned int reg) |
186 | { | |
187 | void __iomem *base = priv(host)->base; | |
188 | unsigned char val; | |
1da177e4 | 189 | |
8b801ead | 190 | writeb(0, base + CTRL); |
1da177e4 | 191 | |
8b801ead | 192 | val = readb(base + 0x2100 + (reg << 2)); |
1da177e4 | 193 | |
8b801ead RK |
194 | priv(host)->ctrl = 0x40; |
195 | writeb(0x40, base + CTRL); | |
1da177e4 | 196 | |
8b801ead | 197 | return val; |
1da177e4 LT |
198 | } |
199 | ||
8b801ead | 200 | static void cumanascsi_write(struct Scsi_Host *host, unsigned int reg, unsigned int value) |
1da177e4 | 201 | { |
8b801ead | 202 | void __iomem *base = priv(host)->base; |
1da177e4 | 203 | |
8b801ead | 204 | writeb(0, base + CTRL); |
1da177e4 | 205 | |
8b801ead RK |
206 | writeb(value, base + 0x2100 + (reg << 2)); |
207 | ||
208 | priv(host)->ctrl = 0x40; | |
209 | writeb(0x40, base + CTRL); | |
210 | } | |
1da177e4 LT |
211 | |
212 | #include "../NCR5380.c" | |
213 | ||
d0be4a7d | 214 | static struct scsi_host_template cumanascsi_template = { |
1da177e4 LT |
215 | .module = THIS_MODULE, |
216 | .name = "Cumana 16-bit SCSI", | |
217 | .info = cumanascsi_info, | |
218 | .queuecommand = cumanascsi_queue_command, | |
219 | .eh_abort_handler = NCR5380_abort, | |
1da177e4 | 220 | .eh_bus_reset_handler = NCR5380_bus_reset, |
1da177e4 LT |
221 | .can_queue = 16, |
222 | .this_id = 7, | |
223 | .sg_tablesize = SG_ALL, | |
224 | .cmd_per_lun = 2, | |
1da177e4 LT |
225 | .use_clustering = DISABLE_CLUSTERING, |
226 | .proc_name = "CumanaSCSI-1", | |
227 | }; | |
228 | ||
229 | static int __devinit | |
230 | cumanascsi1_probe(struct expansion_card *ec, const struct ecard_id *id) | |
231 | { | |
232 | struct Scsi_Host *host; | |
8b801ead | 233 | int ret; |
1da177e4 | 234 | |
8b801ead RK |
235 | ret = ecard_request_resources(ec); |
236 | if (ret) | |
1da177e4 LT |
237 | goto out; |
238 | ||
8b801ead RK |
239 | host = scsi_host_alloc(&cumanascsi_template, sizeof(struct NCR5380_hostdata)); |
240 | if (!host) { | |
241 | ret = -ENOMEM; | |
242 | goto out_release; | |
243 | } | |
244 | ||
245 | priv(host)->base = ioremap(ecard_resource_start(ec, ECARD_RES_IOCSLOW), | |
246 | ecard_resource_len(ec, ECARD_RES_IOCSLOW)); | |
247 | priv(host)->dma = ioremap(ecard_resource_start(ec, ECARD_RES_MEMC), | |
248 | ecard_resource_len(ec, ECARD_RES_MEMC)); | |
249 | if (!priv(host)->base || !priv(host)->dma) { | |
250 | ret = -ENOMEM; | |
251 | goto out_unmap; | |
252 | } | |
253 | ||
1da177e4 LT |
254 | host->irq = ec->irq; |
255 | ||
256 | NCR5380_init(host, 0); | |
257 | ||
8b801ead RK |
258 | priv(host)->ctrl = 0; |
259 | writeb(0, priv(host)->base + CTRL); | |
260 | ||
1da177e4 LT |
261 | host->n_io_port = 255; |
262 | if (!(request_region(host->io_port, host->n_io_port, "CumanaSCSI-1"))) { | |
263 | ret = -EBUSY; | |
8b801ead | 264 | goto out_unmap; |
1da177e4 LT |
265 | } |
266 | ||
1d6f359a | 267 | ret = request_irq(host->irq, cumanascsi_intr, IRQF_DISABLED, |
1da177e4 LT |
268 | "CumanaSCSI-1", host); |
269 | if (ret) { | |
270 | printk("scsi%d: IRQ%d not free: %d\n", | |
271 | host->host_no, host->irq, ret); | |
8b801ead | 272 | goto out_unmap; |
1da177e4 LT |
273 | } |
274 | ||
275 | printk("scsi%d: at port 0x%08lx irq %d", | |
276 | host->host_no, host->io_port, host->irq); | |
277 | printk(" options CAN_QUEUE=%d CMD_PER_LUN=%d release=%d", | |
278 | host->can_queue, host->cmd_per_lun, CUMANASCSI_PUBLIC_RELEASE); | |
279 | printk("\nscsi%d:", host->host_no); | |
280 | NCR5380_print_options(host); | |
281 | printk("\n"); | |
282 | ||
283 | ret = scsi_add_host(host, &ec->dev); | |
284 | if (ret) | |
285 | goto out_free_irq; | |
286 | ||
287 | scsi_scan_host(host); | |
288 | goto out; | |
289 | ||
290 | out_free_irq: | |
291 | free_irq(host->irq, host); | |
8b801ead RK |
292 | out_unmap: |
293 | iounmap(priv(host)->base); | |
294 | iounmap(priv(host)->dma); | |
1da177e4 | 295 | scsi_host_put(host); |
8b801ead RK |
296 | out_release: |
297 | ecard_release_resources(ec); | |
1da177e4 LT |
298 | out: |
299 | return ret; | |
300 | } | |
301 | ||
302 | static void __devexit cumanascsi1_remove(struct expansion_card *ec) | |
303 | { | |
304 | struct Scsi_Host *host = ecard_get_drvdata(ec); | |
305 | ||
306 | ecard_set_drvdata(ec, NULL); | |
307 | ||
308 | scsi_remove_host(host); | |
309 | free_irq(host->irq, host); | |
310 | NCR5380_exit(host); | |
8b801ead RK |
311 | iounmap(priv(host)->base); |
312 | iounmap(priv(host)->dma); | |
1da177e4 | 313 | scsi_host_put(host); |
8b801ead | 314 | ecard_release_resources(ec); |
1da177e4 LT |
315 | } |
316 | ||
317 | static const struct ecard_id cumanascsi1_cids[] = { | |
318 | { MANU_CUMANA, PROD_CUMANA_SCSI_1 }, | |
319 | { 0xffff, 0xffff } | |
320 | }; | |
321 | ||
322 | static struct ecard_driver cumanascsi1_driver = { | |
323 | .probe = cumanascsi1_probe, | |
324 | .remove = __devexit_p(cumanascsi1_remove), | |
325 | .id_table = cumanascsi1_cids, | |
326 | .drv = { | |
327 | .name = "cumanascsi1", | |
328 | }, | |
329 | }; | |
330 | ||
331 | static int __init cumanascsi_init(void) | |
332 | { | |
333 | return ecard_register_driver(&cumanascsi1_driver); | |
334 | } | |
335 | ||
336 | static void __exit cumanascsi_exit(void) | |
337 | { | |
338 | ecard_remove_driver(&cumanascsi1_driver); | |
339 | } | |
340 | ||
341 | module_init(cumanascsi_init); | |
342 | module_exit(cumanascsi_exit); | |
343 | ||
344 | MODULE_DESCRIPTION("Cumana SCSI-1 driver for Acorn machines"); | |
345 | MODULE_LICENSE("GPL"); |