Root/
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 | * Copyright (C) 2008 Hewlett-Packard Development Company, L.P. |
7 | * Bjorn Helgaas <bjorn.helgaas@hp.com> |
8 | */ |
9 | |
10 | #include <linux/pnp.h> |
11 | #include <linux/string.h> |
12 | #include <linux/errno.h> |
13 | #include <linux/list.h> |
14 | #include <linux/types.h> |
15 | #include <linux/stat.h> |
16 | #include <linux/ctype.h> |
17 | #include <linux/slab.h> |
18 | #include <linux/mutex.h> |
19 | |
20 | #include <asm/uaccess.h> |
21 | |
22 | #include "base.h" |
23 | |
24 | struct pnp_info_buffer { |
25 | char *buffer; /* pointer to begin of buffer */ |
26 | char *curr; /* current position in buffer */ |
27 | unsigned long size; /* current size */ |
28 | unsigned long len; /* total length of buffer */ |
29 | int stop; /* stop flag */ |
30 | int error; /* error code */ |
31 | }; |
32 | |
33 | typedef struct pnp_info_buffer pnp_info_buffer_t; |
34 | |
35 | static int pnp_printf(pnp_info_buffer_t * buffer, char *fmt, ...) |
36 | { |
37 | va_list args; |
38 | int res; |
39 | |
40 | if (buffer->stop || buffer->error) |
41 | return 0; |
42 | va_start(args, fmt); |
43 | res = vsnprintf(buffer->curr, buffer->len - buffer->size, fmt, args); |
44 | va_end(args); |
45 | if (buffer->size + res >= buffer->len) { |
46 | buffer->stop = 1; |
47 | return 0; |
48 | } |
49 | buffer->curr += res; |
50 | buffer->size += res; |
51 | return res; |
52 | } |
53 | |
54 | static void pnp_print_port(pnp_info_buffer_t * buffer, char *space, |
55 | struct pnp_port *port) |
56 | { |
57 | pnp_printf(buffer, "%sport %#llx-%#llx, align %#llx, size %#llx, " |
58 | "%i-bit address decoding\n", space, |
59 | (unsigned long long) port->min, |
60 | (unsigned long long) port->max, |
61 | port->align ? ((unsigned long long) port->align - 1) : 0, |
62 | (unsigned long long) port->size, |
63 | port->flags & IORESOURCE_IO_16BIT_ADDR ? 16 : 10); |
64 | } |
65 | |
66 | static void pnp_print_irq(pnp_info_buffer_t * buffer, char *space, |
67 | struct pnp_irq *irq) |
68 | { |
69 | int first = 1, i; |
70 | |
71 | pnp_printf(buffer, "%sirq ", space); |
72 | for (i = 0; i < PNP_IRQ_NR; i++) |
73 | if (test_bit(i, irq->map.bits)) { |
74 | if (!first) { |
75 | pnp_printf(buffer, ","); |
76 | } else { |
77 | first = 0; |
78 | } |
79 | if (i == 2 || i == 9) |
80 | pnp_printf(buffer, "2/9"); |
81 | else |
82 | pnp_printf(buffer, "%i", i); |
83 | } |
84 | if (bitmap_empty(irq->map.bits, PNP_IRQ_NR)) |
85 | pnp_printf(buffer, "<none>"); |
86 | if (irq->flags & IORESOURCE_IRQ_HIGHEDGE) |
87 | pnp_printf(buffer, " High-Edge"); |
88 | if (irq->flags & IORESOURCE_IRQ_LOWEDGE) |
89 | pnp_printf(buffer, " Low-Edge"); |
90 | if (irq->flags & IORESOURCE_IRQ_HIGHLEVEL) |
91 | pnp_printf(buffer, " High-Level"); |
92 | if (irq->flags & IORESOURCE_IRQ_LOWLEVEL) |
93 | pnp_printf(buffer, " Low-Level"); |
94 | if (irq->flags & IORESOURCE_IRQ_OPTIONAL) |
95 | pnp_printf(buffer, " (optional)"); |
96 | pnp_printf(buffer, "\n"); |
97 | } |
98 | |
99 | static void pnp_print_dma(pnp_info_buffer_t * buffer, char *space, |
100 | struct pnp_dma *dma) |
101 | { |
102 | int first = 1, i; |
103 | char *s; |
104 | |
105 | pnp_printf(buffer, "%sdma ", space); |
106 | for (i = 0; i < 8; i++) |
107 | if (dma->map & (1 << i)) { |
108 | if (!first) { |
109 | pnp_printf(buffer, ","); |
110 | } else { |
111 | first = 0; |
112 | } |
113 | pnp_printf(buffer, "%i", i); |
114 | } |
115 | if (!dma->map) |
116 | pnp_printf(buffer, "<none>"); |
117 | switch (dma->flags & IORESOURCE_DMA_TYPE_MASK) { |
118 | case IORESOURCE_DMA_8BIT: |
119 | s = "8-bit"; |
120 | break; |
121 | case IORESOURCE_DMA_8AND16BIT: |
122 | s = "8-bit&16-bit"; |
123 | break; |
124 | default: |
125 | s = "16-bit"; |
126 | } |
127 | pnp_printf(buffer, " %s", s); |
128 | if (dma->flags & IORESOURCE_DMA_MASTER) |
129 | pnp_printf(buffer, " master"); |
130 | if (dma->flags & IORESOURCE_DMA_BYTE) |
131 | pnp_printf(buffer, " byte-count"); |
132 | if (dma->flags & IORESOURCE_DMA_WORD) |
133 | pnp_printf(buffer, " word-count"); |
134 | switch (dma->flags & IORESOURCE_DMA_SPEED_MASK) { |
135 | case IORESOURCE_DMA_TYPEA: |
136 | s = "type-A"; |
137 | break; |
138 | case IORESOURCE_DMA_TYPEB: |
139 | s = "type-B"; |
140 | break; |
141 | case IORESOURCE_DMA_TYPEF: |
142 | s = "type-F"; |
143 | break; |
144 | default: |
145 | s = "compatible"; |
146 | break; |
147 | } |
148 | pnp_printf(buffer, " %s\n", s); |
149 | } |
150 | |
151 | static void pnp_print_mem(pnp_info_buffer_t * buffer, char *space, |
152 | struct pnp_mem *mem) |
153 | { |
154 | char *s; |
155 | |
156 | pnp_printf(buffer, "%sMemory %#llx-%#llx, align %#llx, size %#llx", |
157 | space, (unsigned long long) mem->min, |
158 | (unsigned long long) mem->max, |
159 | (unsigned long long) mem->align, |
160 | (unsigned long long) mem->size); |
161 | if (mem->flags & IORESOURCE_MEM_WRITEABLE) |
162 | pnp_printf(buffer, ", writeable"); |
163 | if (mem->flags & IORESOURCE_MEM_CACHEABLE) |
164 | pnp_printf(buffer, ", cacheable"); |
165 | if (mem->flags & IORESOURCE_MEM_RANGELENGTH) |
166 | pnp_printf(buffer, ", range-length"); |
167 | if (mem->flags & IORESOURCE_MEM_SHADOWABLE) |
168 | pnp_printf(buffer, ", shadowable"); |
169 | if (mem->flags & IORESOURCE_MEM_EXPANSIONROM) |
170 | pnp_printf(buffer, ", expansion ROM"); |
171 | switch (mem->flags & IORESOURCE_MEM_TYPE_MASK) { |
172 | case IORESOURCE_MEM_8BIT: |
173 | s = "8-bit"; |
174 | break; |
175 | case IORESOURCE_MEM_8AND16BIT: |
176 | s = "8-bit&16-bit"; |
177 | break; |
178 | case IORESOURCE_MEM_32BIT: |
179 | s = "32-bit"; |
180 | break; |
181 | default: |
182 | s = "16-bit"; |
183 | } |
184 | pnp_printf(buffer, ", %s\n", s); |
185 | } |
186 | |
187 | static void pnp_print_option(pnp_info_buffer_t * buffer, char *space, |
188 | struct pnp_option *option) |
189 | { |
190 | switch (option->type) { |
191 | case IORESOURCE_IO: |
192 | pnp_print_port(buffer, space, &option->u.port); |
193 | break; |
194 | case IORESOURCE_MEM: |
195 | pnp_print_mem(buffer, space, &option->u.mem); |
196 | break; |
197 | case IORESOURCE_IRQ: |
198 | pnp_print_irq(buffer, space, &option->u.irq); |
199 | break; |
200 | case IORESOURCE_DMA: |
201 | pnp_print_dma(buffer, space, &option->u.dma); |
202 | break; |
203 | } |
204 | } |
205 | |
206 | static ssize_t pnp_show_options(struct device *dmdev, |
207 | struct device_attribute *attr, char *buf) |
208 | { |
209 | struct pnp_dev *dev = to_pnp_dev(dmdev); |
210 | pnp_info_buffer_t *buffer; |
211 | struct pnp_option *option; |
212 | int ret, dep = 0, set = 0; |
213 | char *indent; |
214 | |
215 | buffer = pnp_alloc(sizeof(pnp_info_buffer_t)); |
216 | if (!buffer) |
217 | return -ENOMEM; |
218 | |
219 | buffer->len = PAGE_SIZE; |
220 | buffer->buffer = buf; |
221 | buffer->curr = buffer->buffer; |
222 | |
223 | list_for_each_entry(option, &dev->options, list) { |
224 | if (pnp_option_is_dependent(option)) { |
225 | indent = " "; |
226 | if (!dep || pnp_option_set(option) != set) { |
227 | set = pnp_option_set(option); |
228 | dep = 1; |
229 | pnp_printf(buffer, "Dependent: %02i - " |
230 | "Priority %s\n", set, |
231 | pnp_option_priority_name(option)); |
232 | } |
233 | } else { |
234 | dep = 0; |
235 | indent = ""; |
236 | } |
237 | pnp_print_option(buffer, indent, option); |
238 | } |
239 | |
240 | ret = (buffer->curr - buf); |
241 | kfree(buffer); |
242 | return ret; |
243 | } |
244 | |
245 | static ssize_t pnp_show_current_resources(struct device *dmdev, |
246 | struct device_attribute *attr, |
247 | char *buf) |
248 | { |
249 | struct pnp_dev *dev = to_pnp_dev(dmdev); |
250 | pnp_info_buffer_t *buffer; |
251 | struct pnp_resource *pnp_res; |
252 | struct resource *res; |
253 | int ret; |
254 | |
255 | if (!dev) |
256 | return -EINVAL; |
257 | |
258 | buffer = pnp_alloc(sizeof(pnp_info_buffer_t)); |
259 | if (!buffer) |
260 | return -ENOMEM; |
261 | |
262 | buffer->len = PAGE_SIZE; |
263 | buffer->buffer = buf; |
264 | buffer->curr = buffer->buffer; |
265 | |
266 | pnp_printf(buffer, "state = %s\n", dev->active ? "active" : "disabled"); |
267 | |
268 | list_for_each_entry(pnp_res, &dev->resources, list) { |
269 | res = &pnp_res->res; |
270 | |
271 | pnp_printf(buffer, pnp_resource_type_name(res)); |
272 | |
273 | if (res->flags & IORESOURCE_DISABLED) { |
274 | pnp_printf(buffer, " disabled\n"); |
275 | continue; |
276 | } |
277 | |
278 | switch (pnp_resource_type(res)) { |
279 | case IORESOURCE_IO: |
280 | case IORESOURCE_MEM: |
281 | case IORESOURCE_BUS: |
282 | pnp_printf(buffer, " %#llx-%#llx%s\n", |
283 | (unsigned long long) res->start, |
284 | (unsigned long long) res->end, |
285 | res->flags & IORESOURCE_WINDOW ? |
286 | " window" : ""); |
287 | break; |
288 | case IORESOURCE_IRQ: |
289 | case IORESOURCE_DMA: |
290 | pnp_printf(buffer, " %lld\n", |
291 | (unsigned long long) res->start); |
292 | break; |
293 | } |
294 | } |
295 | |
296 | ret = (buffer->curr - buf); |
297 | kfree(buffer); |
298 | return ret; |
299 | } |
300 | |
301 | static ssize_t pnp_set_current_resources(struct device *dmdev, |
302 | struct device_attribute *attr, |
303 | const char *ubuf, size_t count) |
304 | { |
305 | struct pnp_dev *dev = to_pnp_dev(dmdev); |
306 | char *buf = (void *)ubuf; |
307 | int retval = 0; |
308 | resource_size_t start, end; |
309 | |
310 | if (dev->status & PNP_ATTACHED) { |
311 | retval = -EBUSY; |
312 | dev_info(&dev->dev, "in use; can't configure\n"); |
313 | goto done; |
314 | } |
315 | |
316 | buf = skip_spaces(buf); |
317 | if (!strnicmp(buf, "disable", 7)) { |
318 | retval = pnp_disable_dev(dev); |
319 | goto done; |
320 | } |
321 | if (!strnicmp(buf, "activate", 8)) { |
322 | retval = pnp_activate_dev(dev); |
323 | goto done; |
324 | } |
325 | if (!strnicmp(buf, "fill", 4)) { |
326 | if (dev->active) |
327 | goto done; |
328 | retval = pnp_auto_config_dev(dev); |
329 | goto done; |
330 | } |
331 | if (!strnicmp(buf, "auto", 4)) { |
332 | if (dev->active) |
333 | goto done; |
334 | pnp_init_resources(dev); |
335 | retval = pnp_auto_config_dev(dev); |
336 | goto done; |
337 | } |
338 | if (!strnicmp(buf, "clear", 5)) { |
339 | if (dev->active) |
340 | goto done; |
341 | pnp_init_resources(dev); |
342 | goto done; |
343 | } |
344 | if (!strnicmp(buf, "get", 3)) { |
345 | mutex_lock(&pnp_res_mutex); |
346 | if (pnp_can_read(dev)) |
347 | dev->protocol->get(dev); |
348 | mutex_unlock(&pnp_res_mutex); |
349 | goto done; |
350 | } |
351 | if (!strnicmp(buf, "set", 3)) { |
352 | if (dev->active) |
353 | goto done; |
354 | buf += 3; |
355 | pnp_init_resources(dev); |
356 | mutex_lock(&pnp_res_mutex); |
357 | while (1) { |
358 | buf = skip_spaces(buf); |
359 | if (!strnicmp(buf, "io", 2)) { |
360 | buf = skip_spaces(buf + 2); |
361 | start = simple_strtoul(buf, &buf, 0); |
362 | buf = skip_spaces(buf); |
363 | if (*buf == '-') { |
364 | buf = skip_spaces(buf + 1); |
365 | end = simple_strtoul(buf, &buf, 0); |
366 | } else |
367 | end = start; |
368 | pnp_add_io_resource(dev, start, end, 0); |
369 | continue; |
370 | } |
371 | if (!strnicmp(buf, "mem", 3)) { |
372 | buf = skip_spaces(buf + 3); |
373 | start = simple_strtoul(buf, &buf, 0); |
374 | buf = skip_spaces(buf); |
375 | if (*buf == '-') { |
376 | buf = skip_spaces(buf + 1); |
377 | end = simple_strtoul(buf, &buf, 0); |
378 | } else |
379 | end = start; |
380 | pnp_add_mem_resource(dev, start, end, 0); |
381 | continue; |
382 | } |
383 | if (!strnicmp(buf, "irq", 3)) { |
384 | buf = skip_spaces(buf + 3); |
385 | start = simple_strtoul(buf, &buf, 0); |
386 | pnp_add_irq_resource(dev, start, 0); |
387 | continue; |
388 | } |
389 | if (!strnicmp(buf, "dma", 3)) { |
390 | buf = skip_spaces(buf + 3); |
391 | start = simple_strtoul(buf, &buf, 0); |
392 | pnp_add_dma_resource(dev, start, 0); |
393 | continue; |
394 | } |
395 | break; |
396 | } |
397 | mutex_unlock(&pnp_res_mutex); |
398 | goto done; |
399 | } |
400 | |
401 | done: |
402 | if (retval < 0) |
403 | return retval; |
404 | return count; |
405 | } |
406 | |
407 | static ssize_t pnp_show_current_ids(struct device *dmdev, |
408 | struct device_attribute *attr, char *buf) |
409 | { |
410 | char *str = buf; |
411 | struct pnp_dev *dev = to_pnp_dev(dmdev); |
412 | struct pnp_id *pos = dev->id; |
413 | |
414 | while (pos) { |
415 | str += sprintf(str, "%s\n", pos->id); |
416 | pos = pos->next; |
417 | } |
418 | return (str - buf); |
419 | } |
420 | |
421 | struct device_attribute pnp_interface_attrs[] = { |
422 | __ATTR(resources, S_IRUGO | S_IWUSR, |
423 | pnp_show_current_resources, |
424 | pnp_set_current_resources), |
425 | __ATTR(options, S_IRUGO, pnp_show_options, NULL), |
426 | __ATTR(id, S_IRUGO, pnp_show_current_ids, NULL), |
427 | __ATTR_NULL, |
428 | }; |
429 |
Branches:
ben-wpan
ben-wpan-stefan
javiroman/ks7010
jz-2.6.34
jz-2.6.34-rc5
jz-2.6.34-rc6
jz-2.6.34-rc7
jz-2.6.35
jz-2.6.36
jz-2.6.37
jz-2.6.38
jz-2.6.39
jz-3.0
jz-3.1
jz-3.11
jz-3.12
jz-3.13
jz-3.15
jz-3.16
jz-3.18-dt
jz-3.2
jz-3.3
jz-3.4
jz-3.5
jz-3.6
jz-3.6-rc2-pwm
jz-3.9
jz-3.9-clk
jz-3.9-rc8
jz47xx
jz47xx-2.6.38
master
Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9