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