PNP: add pnp_resource index for ISAPNP
[linux-2.6.git] / drivers / pnp / interface.c
1 /*
2  * interface.c - contains everything related to the user interface
3  *
4  * Some code, especially possible resource dumping is based on isapnp_proc.c (c) Jaroslav Kysela <perex@perex.cz>
5  * Copyright 2002 Adam Belay <ambx1@neo.rr.com>
6  */
7
8 #include <linux/pnp.h>
9 #include <linux/string.h>
10 #include <linux/errno.h>
11 #include <linux/list.h>
12 #include <linux/types.h>
13 #include <linux/pnp.h>
14 #include <linux/stat.h>
15 #include <linux/ctype.h>
16 #include <linux/slab.h>
17 #include <linux/mutex.h>
18
19 #include <asm/uaccess.h>
20
21 #include "base.h"
22
23 struct pnp_info_buffer {
24         char *buffer;           /* pointer to begin of buffer */
25         char *curr;             /* current position in buffer */
26         unsigned long size;     /* current size */
27         unsigned long len;      /* total length of buffer */
28         int stop;               /* stop flag */
29         int error;              /* error code */
30 };
31
32 typedef struct pnp_info_buffer pnp_info_buffer_t;
33
34 static int pnp_printf(pnp_info_buffer_t * buffer, char *fmt, ...)
35 {
36         va_list args;
37         int res;
38
39         if (buffer->stop || buffer->error)
40                 return 0;
41         va_start(args, fmt);
42         res = vsnprintf(buffer->curr, buffer->len - buffer->size, fmt, args);
43         va_end(args);
44         if (buffer->size + res >= buffer->len) {
45                 buffer->stop = 1;
46                 return 0;
47         }
48         buffer->curr += res;
49         buffer->size += res;
50         return res;
51 }
52
53 static void pnp_print_port(pnp_info_buffer_t * buffer, char *space,
54                            struct pnp_port *port)
55 {
56         pnp_printf(buffer,
57                    "%sport 0x%x-0x%x, align 0x%x, size 0x%x, %i-bit address decoding\n",
58                    space, port->min, port->max,
59                    port->align ? (port->align - 1) : 0, port->size,
60                    port->flags & PNP_PORT_FLAG_16BITADDR ? 16 : 10);
61 }
62
63 static void pnp_print_irq(pnp_info_buffer_t * buffer, char *space,
64                           struct pnp_irq *irq)
65 {
66         int first = 1, i;
67
68         pnp_printf(buffer, "%sirq ", space);
69         for (i = 0; i < PNP_IRQ_NR; i++)
70                 if (test_bit(i, irq->map)) {
71                         if (!first) {
72                                 pnp_printf(buffer, ",");
73                         } else {
74                                 first = 0;
75                         }
76                         if (i == 2 || i == 9)
77                                 pnp_printf(buffer, "2/9");
78                         else
79                                 pnp_printf(buffer, "%i", i);
80                 }
81         if (bitmap_empty(irq->map, PNP_IRQ_NR))
82                 pnp_printf(buffer, "<none>");
83         if (irq->flags & IORESOURCE_IRQ_HIGHEDGE)
84                 pnp_printf(buffer, " High-Edge");
85         if (irq->flags & IORESOURCE_IRQ_LOWEDGE)
86                 pnp_printf(buffer, " Low-Edge");
87         if (irq->flags & IORESOURCE_IRQ_HIGHLEVEL)
88                 pnp_printf(buffer, " High-Level");
89         if (irq->flags & IORESOURCE_IRQ_LOWLEVEL)
90                 pnp_printf(buffer, " Low-Level");
91         pnp_printf(buffer, "\n");
92 }
93
94 static void pnp_print_dma(pnp_info_buffer_t * buffer, char *space,
95                           struct pnp_dma *dma)
96 {
97         int first = 1, i;
98         char *s;
99
100         pnp_printf(buffer, "%sdma ", space);
101         for (i = 0; i < 8; i++)
102                 if (dma->map & (1 << i)) {
103                         if (!first) {
104                                 pnp_printf(buffer, ",");
105                         } else {
106                                 first = 0;
107                         }
108                         pnp_printf(buffer, "%i", i);
109                 }
110         if (!dma->map)
111                 pnp_printf(buffer, "<none>");
112         switch (dma->flags & IORESOURCE_DMA_TYPE_MASK) {
113         case IORESOURCE_DMA_8BIT:
114                 s = "8-bit";
115                 break;
116         case IORESOURCE_DMA_8AND16BIT:
117                 s = "8-bit&16-bit";
118                 break;
119         default:
120                 s = "16-bit";
121         }
122         pnp_printf(buffer, " %s", s);
123         if (dma->flags & IORESOURCE_DMA_MASTER)
124                 pnp_printf(buffer, " master");
125         if (dma->flags & IORESOURCE_DMA_BYTE)
126                 pnp_printf(buffer, " byte-count");
127         if (dma->flags & IORESOURCE_DMA_WORD)
128                 pnp_printf(buffer, " word-count");
129         switch (dma->flags & IORESOURCE_DMA_SPEED_MASK) {
130         case IORESOURCE_DMA_TYPEA:
131                 s = "type-A";
132                 break;
133         case IORESOURCE_DMA_TYPEB:
134                 s = "type-B";
135                 break;
136         case IORESOURCE_DMA_TYPEF:
137                 s = "type-F";
138                 break;
139         default:
140                 s = "compatible";
141                 break;
142         }
143         pnp_printf(buffer, " %s\n", s);
144 }
145
146 static void pnp_print_mem(pnp_info_buffer_t * buffer, char *space,
147                           struct pnp_mem *mem)
148 {
149         char *s;
150
151         pnp_printf(buffer, "%sMemory 0x%x-0x%x, align 0x%x, size 0x%x",
152                    space, mem->min, mem->max, mem->align, mem->size);
153         if (mem->flags & IORESOURCE_MEM_WRITEABLE)
154                 pnp_printf(buffer, ", writeable");
155         if (mem->flags & IORESOURCE_MEM_CACHEABLE)
156                 pnp_printf(buffer, ", cacheable");
157         if (mem->flags & IORESOURCE_MEM_RANGELENGTH)
158                 pnp_printf(buffer, ", range-length");
159         if (mem->flags & IORESOURCE_MEM_SHADOWABLE)
160                 pnp_printf(buffer, ", shadowable");
161         if (mem->flags & IORESOURCE_MEM_EXPANSIONROM)
162                 pnp_printf(buffer, ", expansion ROM");
163         switch (mem->flags & IORESOURCE_MEM_TYPE_MASK) {
164         case IORESOURCE_MEM_8BIT:
165                 s = "8-bit";
166                 break;
167         case IORESOURCE_MEM_8AND16BIT:
168                 s = "8-bit&16-bit";
169                 break;
170         case IORESOURCE_MEM_32BIT:
171                 s = "32-bit";
172                 break;
173         default:
174                 s = "16-bit";
175         }
176         pnp_printf(buffer, ", %s\n", s);
177 }
178
179 static void pnp_print_option(pnp_info_buffer_t * buffer, char *space,
180                              struct pnp_option *option, int dep)
181 {
182         char *s;
183         struct pnp_port *port;
184         struct pnp_irq *irq;
185         struct pnp_dma *dma;
186         struct pnp_mem *mem;
187
188         if (dep) {
189                 switch (option->priority) {
190                 case PNP_RES_PRIORITY_PREFERRED:
191                         s = "preferred";
192                         break;
193                 case PNP_RES_PRIORITY_ACCEPTABLE:
194                         s = "acceptable";
195                         break;
196                 case PNP_RES_PRIORITY_FUNCTIONAL:
197                         s = "functional";
198                         break;
199                 default:
200                         s = "invalid";
201                 }
202                 pnp_printf(buffer, "Dependent: %02i - Priority %s\n", dep, s);
203         }
204
205         for (port = option->port; port; port = port->next)
206                 pnp_print_port(buffer, space, port);
207         for (irq = option->irq; irq; irq = irq->next)
208                 pnp_print_irq(buffer, space, irq);
209         for (dma = option->dma; dma; dma = dma->next)
210                 pnp_print_dma(buffer, space, dma);
211         for (mem = option->mem; mem; mem = mem->next)
212                 pnp_print_mem(buffer, space, mem);
213 }
214
215 static ssize_t pnp_show_options(struct device *dmdev,
216                                 struct device_attribute *attr, char *buf)
217 {
218         struct pnp_dev *dev = to_pnp_dev(dmdev);
219         struct pnp_option *independent = dev->independent;
220         struct pnp_option *dependent = dev->dependent;
221         int ret, dep = 1;
222
223         pnp_info_buffer_t *buffer = (pnp_info_buffer_t *)
224             pnp_alloc(sizeof(pnp_info_buffer_t));
225         if (!buffer)
226                 return -ENOMEM;
227
228         buffer->len = PAGE_SIZE;
229         buffer->buffer = buf;
230         buffer->curr = buffer->buffer;
231         if (independent)
232                 pnp_print_option(buffer, "", independent, 0);
233
234         while (dependent) {
235                 pnp_print_option(buffer, "   ", dependent, dep);
236                 dependent = dependent->next;
237                 dep++;
238         }
239         ret = (buffer->curr - buf);
240         kfree(buffer);
241         return ret;
242 }
243
244 static DEVICE_ATTR(options, S_IRUGO, pnp_show_options, NULL);
245
246 static ssize_t pnp_show_current_resources(struct device *dmdev,
247                                           struct device_attribute *attr,
248                                           char *buf)
249 {
250         struct pnp_dev *dev = to_pnp_dev(dmdev);
251         struct resource *res;
252         int i, ret;
253         pnp_info_buffer_t *buffer;
254
255         if (!dev)
256                 return -EINVAL;
257
258         buffer = (pnp_info_buffer_t *) pnp_alloc(sizeof(pnp_info_buffer_t));
259         if (!buffer)
260                 return -ENOMEM;
261         buffer->len = PAGE_SIZE;
262         buffer->buffer = buf;
263         buffer->curr = buffer->buffer;
264
265         pnp_printf(buffer, "state = ");
266         if (dev->active)
267                 pnp_printf(buffer, "active\n");
268         else
269                 pnp_printf(buffer, "disabled\n");
270
271         for (i = 0; (res = pnp_get_resource(dev, IORESOURCE_IO, i)); i++) {
272                 if (pnp_resource_valid(res)) {
273                         pnp_printf(buffer, "io");
274                         if (res->flags & IORESOURCE_DISABLED)
275                                 pnp_printf(buffer, " disabled\n");
276                         else
277                                 pnp_printf(buffer, " 0x%llx-0x%llx\n",
278                                            (unsigned long long) res->start,
279                                            (unsigned long long) res->end);
280                 }
281         }
282         for (i = 0; (res = pnp_get_resource(dev, IORESOURCE_MEM, i)); i++) {
283                 if (pnp_resource_valid(res)) {
284                         pnp_printf(buffer, "mem");
285                         if (res->flags & IORESOURCE_DISABLED)
286                                 pnp_printf(buffer, " disabled\n");
287                         else
288                                 pnp_printf(buffer, " 0x%llx-0x%llx\n",
289                                            (unsigned long long) res->start,
290                                            (unsigned long long) res->end);
291                 }
292         }
293         for (i = 0; (res = pnp_get_resource(dev, IORESOURCE_IRQ, i)); i++) {
294                 if (pnp_resource_valid(res)) {
295                         pnp_printf(buffer, "irq");
296                         if (res->flags & IORESOURCE_DISABLED)
297                                 pnp_printf(buffer, " disabled\n");
298                         else
299                                 pnp_printf(buffer, " %lld\n",
300                                            (unsigned long long) res->start);
301                 }
302         }
303         for (i = 0; (res = pnp_get_resource(dev, IORESOURCE_DMA, i)); i++) {
304                 if (pnp_resource_valid(res)) {
305                         pnp_printf(buffer, "dma");
306                         if (res->flags & IORESOURCE_DISABLED)
307                                 pnp_printf(buffer, " disabled\n");
308                         else
309                                 pnp_printf(buffer, " %lld\n",
310                                            (unsigned long long) res->start);
311                 }
312         }
313         ret = (buffer->curr - buf);
314         kfree(buffer);
315         return ret;
316 }
317
318 static ssize_t
319 pnp_set_current_resources(struct device *dmdev, struct device_attribute *attr,
320                           const char *ubuf, size_t count)
321 {
322         struct pnp_dev *dev = to_pnp_dev(dmdev);
323         struct pnp_resource *pnp_res;
324         struct resource *res;
325         char *buf = (void *)ubuf;
326         int retval = 0;
327
328         if (dev->status & PNP_ATTACHED) {
329                 retval = -EBUSY;
330                 dev_info(&dev->dev, "in use; can't configure\n");
331                 goto done;
332         }
333
334         while (isspace(*buf))
335                 ++buf;
336         if (!strnicmp(buf, "disable", 7)) {
337                 retval = pnp_disable_dev(dev);
338                 goto done;
339         }
340         if (!strnicmp(buf, "activate", 8)) {
341                 retval = pnp_activate_dev(dev);
342                 goto done;
343         }
344         if (!strnicmp(buf, "fill", 4)) {
345                 if (dev->active)
346                         goto done;
347                 retval = pnp_auto_config_dev(dev);
348                 goto done;
349         }
350         if (!strnicmp(buf, "auto", 4)) {
351                 if (dev->active)
352                         goto done;
353                 pnp_init_resources(dev);
354                 retval = pnp_auto_config_dev(dev);
355                 goto done;
356         }
357         if (!strnicmp(buf, "clear", 5)) {
358                 if (dev->active)
359                         goto done;
360                 pnp_init_resources(dev);
361                 goto done;
362         }
363         if (!strnicmp(buf, "get", 3)) {
364                 mutex_lock(&pnp_res_mutex);
365                 if (pnp_can_read(dev))
366                         dev->protocol->get(dev);
367                 mutex_unlock(&pnp_res_mutex);
368                 goto done;
369         }
370         if (!strnicmp(buf, "set", 3)) {
371                 int nport = 0, nmem = 0, nirq = 0, ndma = 0;
372                 if (dev->active)
373                         goto done;
374                 buf += 3;
375                 pnp_init_resources(dev);
376                 mutex_lock(&pnp_res_mutex);
377                 while (1) {
378                         while (isspace(*buf))
379                                 ++buf;
380                         if (!strnicmp(buf, "io", 2)) {
381                                 buf += 2;
382                                 while (isspace(*buf))
383                                         ++buf;
384                                 pnp_res = pnp_get_pnp_resource(dev,
385                                                 IORESOURCE_IO, nport);
386                                 if (!pnp_res)
387                                         break;
388                                 pnp_res->index = nport;
389                                 res = &pnp_res->res;
390                                 res->start = simple_strtoul(buf, &buf, 0);
391                                 while (isspace(*buf))
392                                         ++buf;
393                                 if (*buf == '-') {
394                                         buf += 1;
395                                         while (isspace(*buf))
396                                                 ++buf;
397                                         res->end = simple_strtoul(buf, &buf, 0);
398                                 } else
399                                         res->end = res->start;
400                                 res->flags = IORESOURCE_IO;
401                                 nport++;
402                                 continue;
403                         }
404                         if (!strnicmp(buf, "mem", 3)) {
405                                 buf += 3;
406                                 while (isspace(*buf))
407                                         ++buf;
408                                 pnp_res = pnp_get_pnp_resource(dev,
409                                                 IORESOURCE_MEM, nmem);
410                                 if (!pnp_res)
411                                         break;
412                                 pnp_res->index = nmem;
413                                 res = &pnp_res->res;
414                                 res->start = simple_strtoul(buf, &buf, 0);
415                                 while (isspace(*buf))
416                                         ++buf;
417                                 if (*buf == '-') {
418                                         buf += 1;
419                                         while (isspace(*buf))
420                                                 ++buf;
421                                         res->end = simple_strtoul(buf, &buf, 0);
422                                 } else
423                                         res->end = res->start;
424                                 res->flags = IORESOURCE_MEM;
425                                 nmem++;
426                                 continue;
427                         }
428                         if (!strnicmp(buf, "irq", 3)) {
429                                 buf += 3;
430                                 while (isspace(*buf))
431                                         ++buf;
432                                 pnp_res = pnp_get_pnp_resource(dev,
433                                                 IORESOURCE_IRQ, nirq);
434                                 if (!pnp_res)
435                                         break;
436                                 pnp_res->index = nirq;
437                                 res = &pnp_res->res;
438                                 res->start = res->end =
439                                     simple_strtoul(buf, &buf, 0);
440                                 res->flags = IORESOURCE_IRQ;
441                                 nirq++;
442                                 continue;
443                         }
444                         if (!strnicmp(buf, "dma", 3)) {
445                                 buf += 3;
446                                 while (isspace(*buf))
447                                         ++buf;
448                                 pnp_res = pnp_get_pnp_resource(dev,
449                                                 IORESOURCE_DMA, ndma);
450                                 if (!pnp_res)
451                                         break;
452                                 pnp_res->index = ndma;
453                                 res = &pnp_res->res;
454                                 res->start = res->end =
455                                     simple_strtoul(buf, &buf, 0);
456                                 res->flags = IORESOURCE_DMA;
457                                 ndma++;
458                                 continue;
459                         }
460                         break;
461                 }
462                 mutex_unlock(&pnp_res_mutex);
463                 goto done;
464         }
465
466 done:
467         if (retval < 0)
468                 return retval;
469         return count;
470 }
471
472 static DEVICE_ATTR(resources, S_IRUGO | S_IWUSR,
473                    pnp_show_current_resources, pnp_set_current_resources);
474
475 static ssize_t pnp_show_current_ids(struct device *dmdev,
476                                     struct device_attribute *attr, char *buf)
477 {
478         char *str = buf;
479         struct pnp_dev *dev = to_pnp_dev(dmdev);
480         struct pnp_id *pos = dev->id;
481
482         while (pos) {
483                 str += sprintf(str, "%s\n", pos->id);
484                 pos = pos->next;
485         }
486         return (str - buf);
487 }
488
489 static DEVICE_ATTR(id, S_IRUGO, pnp_show_current_ids, NULL);
490
491 int pnp_interface_attach_device(struct pnp_dev *dev)
492 {
493         int rc = device_create_file(&dev->dev, &dev_attr_options);
494
495         if (rc)
496                 goto err;
497         rc = device_create_file(&dev->dev, &dev_attr_resources);
498         if (rc)
499                 goto err_opt;
500         rc = device_create_file(&dev->dev, &dev_attr_id);
501         if (rc)
502                 goto err_res;
503
504         return 0;
505
506 err_res:
507         device_remove_file(&dev->dev, &dev_attr_resources);
508 err_opt:
509         device_remove_file(&dev->dev, &dev_attr_options);
510 err:
511         return rc;
512 }