PNP: introduce pnp_irq_mask_t typedef
[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 & IORESOURCE_IO_16BIT_ADDR ? 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.bits)) {
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.bits, 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         pnp_info_buffer_t *buffer;
220         struct pnp_option *independent = dev->independent;
221         struct pnp_option *dependent = dev->dependent;
222         int ret, dep = 1;
223
224         buffer = 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         pnp_info_buffer_t *buffer;
252         struct pnp_resource *pnp_res;
253         struct resource *res;
254         int ret;
255
256         if (!dev)
257                 return -EINVAL;
258
259         buffer = pnp_alloc(sizeof(pnp_info_buffer_t));
260         if (!buffer)
261                 return -ENOMEM;
262
263         buffer->len = PAGE_SIZE;
264         buffer->buffer = buf;
265         buffer->curr = buffer->buffer;
266
267         pnp_printf(buffer, "state = %s\n", dev->active ? "active" : "disabled");
268
269         list_for_each_entry(pnp_res, &dev->resources, list) {
270                 res = &pnp_res->res;
271
272                 pnp_printf(buffer, pnp_resource_type_name(res));
273
274                 if (res->flags & IORESOURCE_DISABLED) {
275                         pnp_printf(buffer, " disabled\n");
276                         continue;
277                 }
278
279                 switch (pnp_resource_type(res)) {
280                 case IORESOURCE_IO:
281                 case IORESOURCE_MEM:
282                         pnp_printf(buffer, " %#llx-%#llx\n",
283                                    (unsigned long long) res->start,
284                                    (unsigned long long) res->end);
285                         break;
286                 case IORESOURCE_IRQ:
287                 case IORESOURCE_DMA:
288                         pnp_printf(buffer, " %lld\n",
289                                    (unsigned long long) res->start);
290                         break;
291                 }
292         }
293
294         ret = (buffer->curr - buf);
295         kfree(buffer);
296         return ret;
297 }
298
299 static ssize_t pnp_set_current_resources(struct device *dmdev,
300                                          struct device_attribute *attr,
301                                          const char *ubuf, size_t count)
302 {
303         struct pnp_dev *dev = to_pnp_dev(dmdev);
304         char *buf = (void *)ubuf;
305         int retval = 0;
306         resource_size_t start, end;
307
308         if (dev->status & PNP_ATTACHED) {
309                 retval = -EBUSY;
310                 dev_info(&dev->dev, "in use; can't configure\n");
311                 goto done;
312         }
313
314         while (isspace(*buf))
315                 ++buf;
316         if (!strnicmp(buf, "disable", 7)) {
317                 retval = pnp_disable_dev(dev);
318                 goto done;
319         }
320         if (!strnicmp(buf, "activate", 8)) {
321                 retval = pnp_activate_dev(dev);
322                 goto done;
323         }
324         if (!strnicmp(buf, "fill", 4)) {
325                 if (dev->active)
326                         goto done;
327                 retval = pnp_auto_config_dev(dev);
328                 goto done;
329         }
330         if (!strnicmp(buf, "auto", 4)) {
331                 if (dev->active)
332                         goto done;
333                 pnp_init_resources(dev);
334                 retval = pnp_auto_config_dev(dev);
335                 goto done;
336         }
337         if (!strnicmp(buf, "clear", 5)) {
338                 if (dev->active)
339                         goto done;
340                 pnp_init_resources(dev);
341                 goto done;
342         }
343         if (!strnicmp(buf, "get", 3)) {
344                 mutex_lock(&pnp_res_mutex);
345                 if (pnp_can_read(dev))
346                         dev->protocol->get(dev);
347                 mutex_unlock(&pnp_res_mutex);
348                 goto done;
349         }
350         if (!strnicmp(buf, "set", 3)) {
351                 if (dev->active)
352                         goto done;
353                 buf += 3;
354                 pnp_init_resources(dev);
355                 mutex_lock(&pnp_res_mutex);
356                 while (1) {
357                         while (isspace(*buf))
358                                 ++buf;
359                         if (!strnicmp(buf, "io", 2)) {
360                                 buf += 2;
361                                 while (isspace(*buf))
362                                         ++buf;
363                                 start = simple_strtoul(buf, &buf, 0);
364                                 while (isspace(*buf))
365                                         ++buf;
366                                 if (*buf == '-') {
367                                         buf += 1;
368                                         while (isspace(*buf))
369                                                 ++buf;
370                                         end = simple_strtoul(buf, &buf, 0);
371                                 } else
372                                         end = start;
373                                 pnp_add_io_resource(dev, start, end, 0);
374                                 continue;
375                         }
376                         if (!strnicmp(buf, "mem", 3)) {
377                                 buf += 3;
378                                 while (isspace(*buf))
379                                         ++buf;
380                                 start = simple_strtoul(buf, &buf, 0);
381                                 while (isspace(*buf))
382                                         ++buf;
383                                 if (*buf == '-') {
384                                         buf += 1;
385                                         while (isspace(*buf))
386                                                 ++buf;
387                                         end = simple_strtoul(buf, &buf, 0);
388                                 } else
389                                         end = start;
390                                 pnp_add_mem_resource(dev, start, end, 0);
391                                 continue;
392                         }
393                         if (!strnicmp(buf, "irq", 3)) {
394                                 buf += 3;
395                                 while (isspace(*buf))
396                                         ++buf;
397                                 start = simple_strtoul(buf, &buf, 0);
398                                 pnp_add_irq_resource(dev, start, 0);
399                                 continue;
400                         }
401                         if (!strnicmp(buf, "dma", 3)) {
402                                 buf += 3;
403                                 while (isspace(*buf))
404                                         ++buf;
405                                 start = simple_strtoul(buf, &buf, 0);
406                                 pnp_add_dma_resource(dev, start, 0);
407                                 continue;
408                         }
409                         break;
410                 }
411                 mutex_unlock(&pnp_res_mutex);
412                 goto done;
413         }
414
415 done:
416         if (retval < 0)
417                 return retval;
418         return count;
419 }
420
421 static DEVICE_ATTR(resources, S_IRUGO | S_IWUSR,
422                    pnp_show_current_resources, pnp_set_current_resources);
423
424 static ssize_t pnp_show_current_ids(struct device *dmdev,
425                                     struct device_attribute *attr, char *buf)
426 {
427         char *str = buf;
428         struct pnp_dev *dev = to_pnp_dev(dmdev);
429         struct pnp_id *pos = dev->id;
430
431         while (pos) {
432                 str += sprintf(str, "%s\n", pos->id);
433                 pos = pos->next;
434         }
435         return (str - buf);
436 }
437
438 static DEVICE_ATTR(id, S_IRUGO, pnp_show_current_ids, NULL);
439
440 int pnp_interface_attach_device(struct pnp_dev *dev)
441 {
442         int rc = device_create_file(&dev->dev, &dev_attr_options);
443
444         if (rc)
445                 goto err;
446         rc = device_create_file(&dev->dev, &dev_attr_resources);
447         if (rc)
448                 goto err_opt;
449         rc = device_create_file(&dev->dev, &dev_attr_id);
450         if (rc)
451                 goto err_res;
452
453         return 0;
454
455 err_res:
456         device_remove_file(&dev->dev, &dev_attr_resources);
457 err_opt:
458         device_remove_file(&dev->dev, &dev_attr_options);
459 err:
460         return rc;
461 }