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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> | |
8 | #include <linux/sched.h> | |
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> | |
16 | #include <asm/irq.h> | |
17 | #include <asm/system.h> | |
18 | ||
19 | #include "../scsi.h" | |
20 | #include <scsi/scsi_host.h> | |
21 | ||
22 | #include <scsi/scsicam.h> | |
23 | ||
24 | #define AUTOSENSE | |
25 | #define PSEUDO_DMA | |
26 | ||
27 | #define CUMANASCSI_PUBLIC_RELEASE 1 | |
28 | ||
29 | #define NCR5380_implementation_fields int port, ctrl | |
30 | #define NCR5380_local_declare() struct Scsi_Host *_instance | |
31 | #define NCR5380_setup(instance) _instance = instance | |
32 | #define NCR5380_read(reg) cumanascsi_read(_instance, reg) | |
33 | #define NCR5380_write(reg, value) cumanascsi_write(_instance, reg, value) | |
34 | #define NCR5380_intr cumanascsi_intr | |
35 | #define NCR5380_queue_command cumanascsi_queue_command | |
36 | #define NCR5380_proc_info cumanascsi_proc_info | |
37 | ||
38 | #define BOARD_NORMAL 0 | |
39 | #define BOARD_NCR53C400 1 | |
40 | ||
41 | #include "../NCR5380.h" | |
42 | ||
43 | void cumanascsi_setup(char *str, int *ints) | |
44 | { | |
45 | } | |
46 | ||
47 | const char *cumanascsi_info(struct Scsi_Host *spnt) | |
48 | { | |
49 | return ""; | |
50 | } | |
51 | ||
52 | #ifdef NOT_EFFICIENT | |
53 | #define CTRL(p,v) outb(*ctrl = (v), (p) - 577) | |
54 | #define STAT(p) inb((p)+1) | |
55 | #define IN(p) inb((p)) | |
56 | #define OUT(v,p) outb((v), (p)) | |
57 | #else | |
58 | #define CTRL(p,v) (p[-2308] = (*ctrl = (v))) | |
59 | #define STAT(p) (p[4]) | |
60 | #define IN(p) (*(p)) | |
61 | #define IN2(p) ((unsigned short)(*(volatile unsigned long *)(p))) | |
62 | #define OUT(v,p) (*(p) = (v)) | |
63 | #define OUT2(v,p) (*((volatile unsigned long *)(p)) = (v)) | |
64 | #endif | |
65 | #define L(v) (((v)<<16)|((v) & 0x0000ffff)) | |
66 | #define H(v) (((v)>>16)|((v) & 0xffff0000)) | |
67 | ||
68 | static inline int | |
69 | NCR5380_pwrite(struct Scsi_Host *instance, unsigned char *addr, int len) | |
70 | { | |
71 | int *ctrl = &((struct NCR5380_hostdata *)instance->hostdata)->ctrl; | |
72 | int oldctrl = *ctrl; | |
73 | unsigned long *laddr; | |
74 | #ifdef NOT_EFFICIENT | |
75 | int iobase = instance->io_port; | |
76 | int dma_io = iobase & ~(0x3C0000>>2); | |
77 | #else | |
78 | volatile unsigned char *iobase = (unsigned char *)ioaddr(instance->io_port); | |
79 | volatile unsigned char *dma_io = (unsigned char *)((int)iobase & ~0x3C0000); | |
80 | #endif | |
81 | ||
82 | if(!len) return 0; | |
83 | ||
84 | CTRL(iobase, 0x02); | |
85 | laddr = (unsigned long *)addr; | |
86 | while(len >= 32) | |
87 | { | |
88 | int status; | |
89 | unsigned long v; | |
90 | status = STAT(iobase); | |
91 | if(status & 0x80) | |
92 | goto end; | |
93 | if(!(status & 0x40)) | |
94 | continue; | |
95 | v=*laddr++; OUT2(L(v),dma_io); OUT2(H(v),dma_io); | |
96 | v=*laddr++; OUT2(L(v),dma_io); OUT2(H(v),dma_io); | |
97 | v=*laddr++; OUT2(L(v),dma_io); OUT2(H(v),dma_io); | |
98 | v=*laddr++; OUT2(L(v),dma_io); OUT2(H(v),dma_io); | |
99 | v=*laddr++; OUT2(L(v),dma_io); OUT2(H(v),dma_io); | |
100 | v=*laddr++; OUT2(L(v),dma_io); OUT2(H(v),dma_io); | |
101 | v=*laddr++; OUT2(L(v),dma_io); OUT2(H(v),dma_io); | |
102 | v=*laddr++; OUT2(L(v),dma_io); OUT2(H(v),dma_io); | |
103 | len -= 32; | |
104 | if(len == 0) | |
105 | break; | |
106 | } | |
107 | ||
108 | addr = (unsigned char *)laddr; | |
109 | CTRL(iobase, 0x12); | |
110 | while(len > 0) | |
111 | { | |
112 | int status; | |
113 | status = STAT(iobase); | |
114 | if(status & 0x80) | |
115 | goto end; | |
116 | if(status & 0x40) | |
117 | { | |
118 | OUT(*addr++, dma_io); | |
119 | if(--len == 0) | |
120 | break; | |
121 | } | |
122 | ||
123 | status = STAT(iobase); | |
124 | if(status & 0x80) | |
125 | goto end; | |
126 | if(status & 0x40) | |
127 | { | |
128 | OUT(*addr++, dma_io); | |
129 | if(--len == 0) | |
130 | break; | |
131 | } | |
132 | } | |
133 | end: | |
134 | CTRL(iobase, oldctrl|0x40); | |
135 | return len; | |
136 | } | |
137 | ||
138 | static inline int | |
139 | NCR5380_pread(struct Scsi_Host *instance, unsigned char *addr, int len) | |
140 | { | |
141 | int *ctrl = &((struct NCR5380_hostdata *)instance->hostdata)->ctrl; | |
142 | int oldctrl = *ctrl; | |
143 | unsigned long *laddr; | |
144 | #ifdef NOT_EFFICIENT | |
145 | int iobase = instance->io_port; | |
146 | int dma_io = iobase & ~(0x3C0000>>2); | |
147 | #else | |
148 | volatile unsigned char *iobase = (unsigned char *)ioaddr(instance->io_port); | |
149 | volatile unsigned char *dma_io = (unsigned char *)((int)iobase & ~0x3C0000); | |
150 | #endif | |
151 | ||
152 | if(!len) return 0; | |
153 | ||
154 | CTRL(iobase, 0x00); | |
155 | laddr = (unsigned long *)addr; | |
156 | while(len >= 32) | |
157 | { | |
158 | int status; | |
159 | status = STAT(iobase); | |
160 | if(status & 0x80) | |
161 | goto end; | |
162 | if(!(status & 0x40)) | |
163 | continue; | |
164 | *laddr++ = IN2(dma_io)|(IN2(dma_io)<<16); | |
165 | *laddr++ = IN2(dma_io)|(IN2(dma_io)<<16); | |
166 | *laddr++ = IN2(dma_io)|(IN2(dma_io)<<16); | |
167 | *laddr++ = IN2(dma_io)|(IN2(dma_io)<<16); | |
168 | *laddr++ = IN2(dma_io)|(IN2(dma_io)<<16); | |
169 | *laddr++ = IN2(dma_io)|(IN2(dma_io)<<16); | |
170 | *laddr++ = IN2(dma_io)|(IN2(dma_io)<<16); | |
171 | *laddr++ = IN2(dma_io)|(IN2(dma_io)<<16); | |
172 | len -= 32; | |
173 | if(len == 0) | |
174 | break; | |
175 | } | |
176 | ||
177 | addr = (unsigned char *)laddr; | |
178 | CTRL(iobase, 0x10); | |
179 | while(len > 0) | |
180 | { | |
181 | int status; | |
182 | status = STAT(iobase); | |
183 | if(status & 0x80) | |
184 | goto end; | |
185 | if(status & 0x40) | |
186 | { | |
187 | *addr++ = IN(dma_io); | |
188 | if(--len == 0) | |
189 | break; | |
190 | } | |
191 | ||
192 | status = STAT(iobase); | |
193 | if(status & 0x80) | |
194 | goto end; | |
195 | if(status & 0x40) | |
196 | { | |
197 | *addr++ = IN(dma_io); | |
198 | if(--len == 0) | |
199 | break; | |
200 | } | |
201 | } | |
202 | end: | |
203 | CTRL(iobase, oldctrl|0x40); | |
204 | return len; | |
205 | } | |
206 | ||
207 | #undef STAT | |
208 | #undef CTRL | |
209 | #undef IN | |
210 | #undef OUT | |
211 | ||
212 | #define CTRL(p,v) outb(*ctrl = (v), (p) - 577) | |
213 | ||
214 | static char cumanascsi_read(struct Scsi_Host *instance, int reg) | |
215 | { | |
216 | unsigned int iobase = instance->io_port; | |
217 | int i; | |
218 | int *ctrl = &((struct NCR5380_hostdata *)instance->hostdata)->ctrl; | |
219 | ||
220 | CTRL(iobase, 0); | |
221 | i = inb(iobase + 64 + reg); | |
222 | CTRL(iobase, 0x40); | |
223 | ||
224 | return i; | |
225 | } | |
226 | ||
227 | static void cumanascsi_write(struct Scsi_Host *instance, int reg, int value) | |
228 | { | |
229 | int iobase = instance->io_port; | |
230 | int *ctrl = &((struct NCR5380_hostdata *)instance->hostdata)->ctrl; | |
231 | ||
232 | CTRL(iobase, 0); | |
233 | outb(value, iobase + 64 + reg); | |
234 | CTRL(iobase, 0x40); | |
235 | } | |
236 | ||
237 | #undef CTRL | |
238 | ||
239 | #include "../NCR5380.c" | |
240 | ||
241 | static Scsi_Host_Template cumanascsi_template = { | |
242 | .module = THIS_MODULE, | |
243 | .name = "Cumana 16-bit SCSI", | |
244 | .info = cumanascsi_info, | |
245 | .queuecommand = cumanascsi_queue_command, | |
246 | .eh_abort_handler = NCR5380_abort, | |
1da177e4 | 247 | .eh_bus_reset_handler = NCR5380_bus_reset, |
1da177e4 LT |
248 | .can_queue = 16, |
249 | .this_id = 7, | |
250 | .sg_tablesize = SG_ALL, | |
251 | .cmd_per_lun = 2, | |
252 | .unchecked_isa_dma = 0, | |
253 | .use_clustering = DISABLE_CLUSTERING, | |
254 | .proc_name = "CumanaSCSI-1", | |
255 | }; | |
256 | ||
257 | static int __devinit | |
258 | cumanascsi1_probe(struct expansion_card *ec, const struct ecard_id *id) | |
259 | { | |
260 | struct Scsi_Host *host; | |
261 | int ret = -ENOMEM; | |
262 | ||
263 | host = scsi_host_alloc(&cumanascsi_template, sizeof(struct NCR5380_hostdata)); | |
264 | if (!host) | |
265 | goto out; | |
266 | ||
267 | host->io_port = ecard_address(ec, ECARD_IOC, ECARD_SLOW) + 0x800; | |
268 | host->irq = ec->irq; | |
269 | ||
270 | NCR5380_init(host, 0); | |
271 | ||
272 | host->n_io_port = 255; | |
273 | if (!(request_region(host->io_port, host->n_io_port, "CumanaSCSI-1"))) { | |
274 | ret = -EBUSY; | |
275 | goto out_free; | |
276 | } | |
277 | ||
278 | ((struct NCR5380_hostdata *)host->hostdata)->ctrl = 0; | |
279 | outb(0x00, host->io_port - 577); | |
280 | ||
281 | ret = request_irq(host->irq, cumanascsi_intr, SA_INTERRUPT, | |
282 | "CumanaSCSI-1", host); | |
283 | if (ret) { | |
284 | printk("scsi%d: IRQ%d not free: %d\n", | |
285 | host->host_no, host->irq, ret); | |
286 | goto out_release; | |
287 | } | |
288 | ||
289 | printk("scsi%d: at port 0x%08lx irq %d", | |
290 | host->host_no, host->io_port, host->irq); | |
291 | printk(" options CAN_QUEUE=%d CMD_PER_LUN=%d release=%d", | |
292 | host->can_queue, host->cmd_per_lun, CUMANASCSI_PUBLIC_RELEASE); | |
293 | printk("\nscsi%d:", host->host_no); | |
294 | NCR5380_print_options(host); | |
295 | printk("\n"); | |
296 | ||
297 | ret = scsi_add_host(host, &ec->dev); | |
298 | if (ret) | |
299 | goto out_free_irq; | |
300 | ||
301 | scsi_scan_host(host); | |
302 | goto out; | |
303 | ||
304 | out_free_irq: | |
305 | free_irq(host->irq, host); | |
306 | out_release: | |
307 | release_region(host->io_port, host->n_io_port); | |
308 | out_free: | |
309 | scsi_host_put(host); | |
310 | out: | |
311 | return ret; | |
312 | } | |
313 | ||
314 | static void __devexit cumanascsi1_remove(struct expansion_card *ec) | |
315 | { | |
316 | struct Scsi_Host *host = ecard_get_drvdata(ec); | |
317 | ||
318 | ecard_set_drvdata(ec, NULL); | |
319 | ||
320 | scsi_remove_host(host); | |
321 | free_irq(host->irq, host); | |
322 | NCR5380_exit(host); | |
323 | release_region(host->io_port, host->n_io_port); | |
324 | scsi_host_put(host); | |
325 | } | |
326 | ||
327 | static const struct ecard_id cumanascsi1_cids[] = { | |
328 | { MANU_CUMANA, PROD_CUMANA_SCSI_1 }, | |
329 | { 0xffff, 0xffff } | |
330 | }; | |
331 | ||
332 | static struct ecard_driver cumanascsi1_driver = { | |
333 | .probe = cumanascsi1_probe, | |
334 | .remove = __devexit_p(cumanascsi1_remove), | |
335 | .id_table = cumanascsi1_cids, | |
336 | .drv = { | |
337 | .name = "cumanascsi1", | |
338 | }, | |
339 | }; | |
340 | ||
341 | static int __init cumanascsi_init(void) | |
342 | { | |
343 | return ecard_register_driver(&cumanascsi1_driver); | |
344 | } | |
345 | ||
346 | static void __exit cumanascsi_exit(void) | |
347 | { | |
348 | ecard_remove_driver(&cumanascsi1_driver); | |
349 | } | |
350 | ||
351 | module_init(cumanascsi_init); | |
352 | module_exit(cumanascsi_exit); | |
353 | ||
354 | MODULE_DESCRIPTION("Cumana SCSI-1 driver for Acorn machines"); | |
355 | MODULE_LICENSE("GPL"); |