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Commit | Line | Data |
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8bdb3a2d MJ |
1 | /* |
2 | * A framebuffer driver for VBE 2.0+ compliant video cards | |
3 | * | |
4 | * (c) 2007 Michal Januszewski <spock@gentoo.org> | |
5 | * Loosely based upon the vesafb driver. | |
6 | * | |
7 | */ | |
8 | #include <linux/init.h> | |
9 | #include <linux/module.h> | |
10 | #include <linux/moduleparam.h> | |
11 | #include <linux/skbuff.h> | |
12 | #include <linux/timer.h> | |
13 | #include <linux/completion.h> | |
14 | #include <linux/connector.h> | |
15 | #include <linux/random.h> | |
16 | #include <linux/platform_device.h> | |
17 | #include <linux/limits.h> | |
18 | #include <linux/fb.h> | |
19 | #include <linux/io.h> | |
20 | #include <linux/mutex.h> | |
21 | #include <video/edid.h> | |
22 | #include <video/uvesafb.h> | |
23 | #ifdef CONFIG_X86 | |
24 | #include <video/vga.h> | |
25 | #endif | |
26 | #ifdef CONFIG_MTRR | |
27 | #include <asm/mtrr.h> | |
28 | #endif | |
29 | #include "edid.h" | |
30 | ||
31 | static struct cb_id uvesafb_cn_id = { | |
32 | .idx = CN_IDX_V86D, | |
33 | .val = CN_VAL_V86D_UVESAFB | |
34 | }; | |
35 | static char v86d_path[PATH_MAX] = "/sbin/v86d"; | |
36 | static char v86d_started; /* has v86d been started by uvesafb? */ | |
37 | ||
38 | static struct fb_fix_screeninfo uvesafb_fix __devinitdata = { | |
39 | .id = "VESA VGA", | |
40 | .type = FB_TYPE_PACKED_PIXELS, | |
41 | .accel = FB_ACCEL_NONE, | |
42 | .visual = FB_VISUAL_TRUECOLOR, | |
43 | }; | |
44 | ||
45 | static int mtrr __devinitdata = 3; /* enable mtrr by default */ | |
27b526a0 | 46 | static int blank = 1; /* enable blanking by default */ |
79306a34 | 47 | static int ypan = 1; /* 0: scroll, 1: ypan, 2: ywrap */ |
8bdb3a2d MJ |
48 | static int pmi_setpal __devinitdata = 1; /* use PMI for palette changes */ |
49 | static int nocrtc __devinitdata; /* ignore CRTC settings */ | |
50 | static int noedid __devinitdata; /* don't try DDC transfers */ | |
51 | static int vram_remap __devinitdata; /* set amt. of memory to be used */ | |
52 | static int vram_total __devinitdata; /* set total amount of memory */ | |
53 | static u16 maxclk __devinitdata; /* maximum pixel clock */ | |
54 | static u16 maxvf __devinitdata; /* maximum vertical frequency */ | |
55 | static u16 maxhf __devinitdata; /* maximum horizontal frequency */ | |
56 | static u16 vbemode __devinitdata; /* force use of a specific VBE mode */ | |
57 | static char *mode_option __devinitdata; | |
58 | ||
59 | static struct uvesafb_ktask *uvfb_tasks[UVESAFB_TASKS_MAX]; | |
60 | static DEFINE_MUTEX(uvfb_lock); | |
61 | ||
62 | /* | |
63 | * A handler for replies from userspace. | |
64 | * | |
65 | * Make sure each message passes consistency checks and if it does, | |
66 | * find the kernel part of the task struct, copy the registers and | |
67 | * the buffer contents and then complete the task. | |
68 | */ | |
69 | static void uvesafb_cn_callback(void *data) | |
70 | { | |
71 | struct cn_msg *msg = data; | |
72 | struct uvesafb_task *utask; | |
73 | struct uvesafb_ktask *task; | |
74 | ||
75 | if (msg->seq >= UVESAFB_TASKS_MAX) | |
76 | return; | |
77 | ||
78 | mutex_lock(&uvfb_lock); | |
79 | task = uvfb_tasks[msg->seq]; | |
80 | ||
81 | if (!task || msg->ack != task->ack) { | |
82 | mutex_unlock(&uvfb_lock); | |
83 | return; | |
84 | } | |
85 | ||
86 | utask = (struct uvesafb_task *)msg->data; | |
87 | ||
88 | /* Sanity checks for the buffer length. */ | |
89 | if (task->t.buf_len < utask->buf_len || | |
90 | utask->buf_len > msg->len - sizeof(*utask)) { | |
91 | mutex_unlock(&uvfb_lock); | |
92 | return; | |
93 | } | |
94 | ||
95 | uvfb_tasks[msg->seq] = NULL; | |
96 | mutex_unlock(&uvfb_lock); | |
97 | ||
98 | memcpy(&task->t, utask, sizeof(*utask)); | |
99 | ||
100 | if (task->t.buf_len && task->buf) | |
101 | memcpy(task->buf, utask + 1, task->t.buf_len); | |
102 | ||
103 | complete(task->done); | |
104 | return; | |
105 | } | |
106 | ||
107 | static int uvesafb_helper_start(void) | |
108 | { | |
109 | char *envp[] = { | |
110 | "HOME=/", | |
111 | "PATH=/sbin:/bin", | |
112 | NULL, | |
113 | }; | |
114 | ||
115 | char *argv[] = { | |
116 | v86d_path, | |
117 | NULL, | |
118 | }; | |
119 | ||
120 | return call_usermodehelper(v86d_path, argv, envp, 1); | |
121 | } | |
122 | ||
123 | /* | |
124 | * Execute a uvesafb task. | |
125 | * | |
126 | * Returns 0 if the task is executed successfully. | |
127 | * | |
128 | * A message sent to the userspace consists of the uvesafb_task | |
129 | * struct and (optionally) a buffer. The uvesafb_task struct is | |
130 | * a simplified version of uvesafb_ktask (its kernel counterpart) | |
131 | * containing only the register values, flags and the length of | |
132 | * the buffer. | |
133 | * | |
134 | * Each message is assigned a sequence number (increased linearly) | |
135 | * and a random ack number. The sequence number is used as a key | |
136 | * for the uvfb_tasks array which holds pointers to uvesafb_ktask | |
137 | * structs for all requests. | |
138 | */ | |
139 | static int uvesafb_exec(struct uvesafb_ktask *task) | |
140 | { | |
141 | static int seq; | |
142 | struct cn_msg *m; | |
143 | int err; | |
144 | int len = sizeof(task->t) + task->t.buf_len; | |
145 | ||
146 | /* | |
147 | * Check whether the message isn't longer than the maximum | |
148 | * allowed by connector. | |
149 | */ | |
150 | if (sizeof(*m) + len > CONNECTOR_MAX_MSG_SIZE) { | |
151 | printk(KERN_WARNING "uvesafb: message too long (%d), " | |
152 | "can't execute task\n", (int)(sizeof(*m) + len)); | |
153 | return -E2BIG; | |
154 | } | |
155 | ||
156 | m = kzalloc(sizeof(*m) + len, GFP_KERNEL); | |
157 | if (!m) | |
158 | return -ENOMEM; | |
159 | ||
160 | init_completion(task->done); | |
161 | ||
162 | memcpy(&m->id, &uvesafb_cn_id, sizeof(m->id)); | |
163 | m->seq = seq; | |
164 | m->len = len; | |
165 | m->ack = random32(); | |
166 | ||
167 | /* uvesafb_task structure */ | |
168 | memcpy(m + 1, &task->t, sizeof(task->t)); | |
169 | ||
170 | /* Buffer */ | |
171 | memcpy((u8 *)(m + 1) + sizeof(task->t), task->buf, task->t.buf_len); | |
172 | ||
173 | /* | |
174 | * Save the message ack number so that we can find the kernel | |
175 | * part of this task when a reply is received from userspace. | |
176 | */ | |
177 | task->ack = m->ack; | |
178 | ||
179 | mutex_lock(&uvfb_lock); | |
180 | ||
181 | /* If all slots are taken -- bail out. */ | |
182 | if (uvfb_tasks[seq]) { | |
183 | mutex_unlock(&uvfb_lock); | |
184 | return -EBUSY; | |
185 | } | |
186 | ||
187 | /* Save a pointer to the kernel part of the task struct. */ | |
188 | uvfb_tasks[seq] = task; | |
189 | mutex_unlock(&uvfb_lock); | |
190 | ||
191 | err = cn_netlink_send(m, 0, gfp_any()); | |
192 | if (err == -ESRCH) { | |
193 | /* | |
194 | * Try to start the userspace helper if sending | |
195 | * the request failed the first time. | |
196 | */ | |
197 | err = uvesafb_helper_start(); | |
198 | if (err) { | |
199 | printk(KERN_ERR "uvesafb: failed to execute %s\n", | |
200 | v86d_path); | |
201 | printk(KERN_ERR "uvesafb: make sure that the v86d " | |
202 | "helper is installed and executable\n"); | |
203 | } else { | |
204 | v86d_started = 1; | |
205 | err = cn_netlink_send(m, 0, gfp_any()); | |
206 | } | |
207 | } | |
208 | kfree(m); | |
209 | ||
210 | if (!err && !(task->t.flags & TF_EXIT)) | |
211 | err = !wait_for_completion_timeout(task->done, | |
212 | msecs_to_jiffies(UVESAFB_TIMEOUT)); | |
213 | ||
214 | mutex_lock(&uvfb_lock); | |
215 | uvfb_tasks[seq] = NULL; | |
216 | mutex_unlock(&uvfb_lock); | |
217 | ||
218 | seq++; | |
219 | if (seq >= UVESAFB_TASKS_MAX) | |
220 | seq = 0; | |
221 | ||
222 | return err; | |
223 | } | |
224 | ||
225 | /* | |
226 | * Free a uvesafb_ktask struct. | |
227 | */ | |
228 | static void uvesafb_free(struct uvesafb_ktask *task) | |
229 | { | |
230 | if (task) { | |
231 | if (task->done) | |
232 | kfree(task->done); | |
233 | kfree(task); | |
234 | } | |
235 | } | |
236 | ||
237 | /* | |
238 | * Prepare a uvesafb_ktask struct to be used again. | |
239 | */ | |
240 | static void uvesafb_reset(struct uvesafb_ktask *task) | |
241 | { | |
242 | struct completion *cpl = task->done; | |
243 | ||
244 | memset(task, 0, sizeof(*task)); | |
245 | task->done = cpl; | |
246 | } | |
247 | ||
248 | /* | |
249 | * Allocate and prepare a uvesafb_ktask struct. | |
250 | */ | |
251 | static struct uvesafb_ktask *uvesafb_prep(void) | |
252 | { | |
253 | struct uvesafb_ktask *task; | |
254 | ||
255 | task = kzalloc(sizeof(*task), GFP_KERNEL); | |
256 | if (task) { | |
257 | task->done = kzalloc(sizeof(*task->done), GFP_KERNEL); | |
258 | if (!task->done) { | |
259 | kfree(task); | |
260 | task = NULL; | |
261 | } | |
262 | } | |
263 | return task; | |
264 | } | |
265 | ||
266 | static void uvesafb_setup_var(struct fb_var_screeninfo *var, | |
267 | struct fb_info *info, struct vbe_mode_ib *mode) | |
268 | { | |
269 | struct uvesafb_par *par = info->par; | |
270 | ||
271 | var->vmode = FB_VMODE_NONINTERLACED; | |
272 | var->sync = FB_SYNC_VERT_HIGH_ACT; | |
273 | ||
274 | var->xres = mode->x_res; | |
275 | var->yres = mode->y_res; | |
276 | var->xres_virtual = mode->x_res; | |
277 | var->yres_virtual = (par->ypan) ? | |
278 | info->fix.smem_len / mode->bytes_per_scan_line : | |
279 | mode->y_res; | |
280 | var->xoffset = 0; | |
281 | var->yoffset = 0; | |
282 | var->bits_per_pixel = mode->bits_per_pixel; | |
283 | ||
284 | if (var->bits_per_pixel == 15) | |
285 | var->bits_per_pixel = 16; | |
286 | ||
287 | if (var->bits_per_pixel > 8) { | |
288 | var->red.offset = mode->red_off; | |
289 | var->red.length = mode->red_len; | |
290 | var->green.offset = mode->green_off; | |
291 | var->green.length = mode->green_len; | |
292 | var->blue.offset = mode->blue_off; | |
293 | var->blue.length = mode->blue_len; | |
294 | var->transp.offset = mode->rsvd_off; | |
295 | var->transp.length = mode->rsvd_len; | |
296 | } else { | |
297 | var->red.offset = 0; | |
298 | var->green.offset = 0; | |
299 | var->blue.offset = 0; | |
300 | var->transp.offset = 0; | |
301 | ||
302 | /* | |
303 | * We're assuming that we can switch the DAC to 8 bits. If | |
304 | * this proves to be incorrect, we'll update the fields | |
305 | * later in set_par(). | |
306 | */ | |
307 | if (par->vbe_ib.capabilities & VBE_CAP_CAN_SWITCH_DAC) { | |
308 | var->red.length = 8; | |
309 | var->green.length = 8; | |
310 | var->blue.length = 8; | |
311 | var->transp.length = 0; | |
312 | } else { | |
313 | var->red.length = 6; | |
314 | var->green.length = 6; | |
315 | var->blue.length = 6; | |
316 | var->transp.length = 0; | |
317 | } | |
318 | } | |
319 | } | |
320 | ||
321 | static int uvesafb_vbe_find_mode(struct uvesafb_par *par, | |
322 | int xres, int yres, int depth, unsigned char flags) | |
323 | { | |
324 | int i, match = -1, h = 0, d = 0x7fffffff; | |
325 | ||
326 | for (i = 0; i < par->vbe_modes_cnt; i++) { | |
327 | h = abs(par->vbe_modes[i].x_res - xres) + | |
328 | abs(par->vbe_modes[i].y_res - yres) + | |
329 | abs(depth - par->vbe_modes[i].depth); | |
330 | ||
331 | /* | |
332 | * We have an exact match in terms of resolution | |
333 | * and depth. | |
334 | */ | |
335 | if (h == 0) | |
336 | return i; | |
337 | ||
338 | if (h < d || (h == d && par->vbe_modes[i].depth > depth)) { | |
339 | d = h; | |
340 | match = i; | |
341 | } | |
342 | } | |
343 | i = 1; | |
344 | ||
345 | if (flags & UVESAFB_EXACT_DEPTH && | |
346 | par->vbe_modes[match].depth != depth) | |
347 | i = 0; | |
348 | ||
349 | if (flags & UVESAFB_EXACT_RES && d > 24) | |
350 | i = 0; | |
351 | ||
352 | if (i != 0) | |
353 | return match; | |
354 | else | |
355 | return -1; | |
356 | } | |
357 | ||
358 | static u8 *uvesafb_vbe_state_save(struct uvesafb_par *par) | |
359 | { | |
360 | struct uvesafb_ktask *task; | |
361 | u8 *state; | |
362 | int err; | |
363 | ||
364 | if (!par->vbe_state_size) | |
365 | return NULL; | |
366 | ||
367 | state = kmalloc(par->vbe_state_size, GFP_KERNEL); | |
368 | if (!state) | |
369 | return NULL; | |
370 | ||
371 | task = uvesafb_prep(); | |
372 | if (!task) { | |
373 | kfree(state); | |
374 | return NULL; | |
375 | } | |
376 | ||
377 | task->t.regs.eax = 0x4f04; | |
378 | task->t.regs.ecx = 0x000f; | |
379 | task->t.regs.edx = 0x0001; | |
380 | task->t.flags = TF_BUF_RET | TF_BUF_ESBX; | |
381 | task->t.buf_len = par->vbe_state_size; | |
382 | task->buf = state; | |
383 | err = uvesafb_exec(task); | |
384 | ||
385 | if (err || (task->t.regs.eax & 0xffff) != 0x004f) { | |
386 | printk(KERN_WARNING "uvesafb: VBE get state call " | |
387 | "failed (eax=0x%x, err=%d)\n", | |
388 | task->t.regs.eax, err); | |
389 | kfree(state); | |
390 | state = NULL; | |
391 | } | |
392 | ||
393 | uvesafb_free(task); | |
394 | return state; | |
395 | } | |
396 | ||
397 | static void uvesafb_vbe_state_restore(struct uvesafb_par *par, u8 *state_buf) | |
398 | { | |
399 | struct uvesafb_ktask *task; | |
400 | int err; | |
401 | ||
402 | if (!state_buf) | |
403 | return; | |
404 | ||
405 | task = uvesafb_prep(); | |
406 | if (!task) | |
407 | return; | |
408 | ||
409 | task->t.regs.eax = 0x4f04; | |
410 | task->t.regs.ecx = 0x000f; | |
411 | task->t.regs.edx = 0x0002; | |
412 | task->t.buf_len = par->vbe_state_size; | |
413 | task->t.flags = TF_BUF_ESBX; | |
414 | task->buf = state_buf; | |
415 | ||
416 | err = uvesafb_exec(task); | |
417 | if (err || (task->t.regs.eax & 0xffff) != 0x004f) | |
418 | printk(KERN_WARNING "uvesafb: VBE state restore call " | |
419 | "failed (eax=0x%x, err=%d)\n", | |
420 | task->t.regs.eax, err); | |
421 | ||
422 | uvesafb_free(task); | |
423 | } | |
424 | ||
425 | static int __devinit uvesafb_vbe_getinfo(struct uvesafb_ktask *task, | |
426 | struct uvesafb_par *par) | |
427 | { | |
428 | int err; | |
429 | ||
430 | task->t.regs.eax = 0x4f00; | |
431 | task->t.flags = TF_VBEIB; | |
432 | task->t.buf_len = sizeof(struct vbe_ib); | |
433 | task->buf = &par->vbe_ib; | |
434 | strncpy(par->vbe_ib.vbe_signature, "VBE2", 4); | |
435 | ||
436 | err = uvesafb_exec(task); | |
437 | if (err || (task->t.regs.eax & 0xffff) != 0x004f) { | |
438 | printk(KERN_ERR "uvesafb: Getting VBE info block failed " | |
439 | "(eax=0x%x, err=%d)\n", (u32)task->t.regs.eax, | |
440 | err); | |
441 | return -EINVAL; | |
442 | } | |
443 | ||
444 | if (par->vbe_ib.vbe_version < 0x0200) { | |
445 | printk(KERN_ERR "uvesafb: Sorry, pre-VBE 2.0 cards are " | |
446 | "not supported.\n"); | |
447 | return -EINVAL; | |
448 | } | |
449 | ||
450 | if (!par->vbe_ib.mode_list_ptr) { | |
451 | printk(KERN_ERR "uvesafb: Missing mode list!\n"); | |
452 | return -EINVAL; | |
453 | } | |
454 | ||
455 | printk(KERN_INFO "uvesafb: "); | |
456 | ||
457 | /* | |
458 | * Convert string pointers and the mode list pointer into | |
459 | * usable addresses. Print informational messages about the | |
460 | * video adapter and its vendor. | |
461 | */ | |
462 | if (par->vbe_ib.oem_vendor_name_ptr) | |
463 | printk("%s, ", | |
464 | ((char *)task->buf) + par->vbe_ib.oem_vendor_name_ptr); | |
465 | ||
466 | if (par->vbe_ib.oem_product_name_ptr) | |
467 | printk("%s, ", | |
468 | ((char *)task->buf) + par->vbe_ib.oem_product_name_ptr); | |
469 | ||
470 | if (par->vbe_ib.oem_product_rev_ptr) | |
471 | printk("%s, ", | |
472 | ((char *)task->buf) + par->vbe_ib.oem_product_rev_ptr); | |
473 | ||
474 | if (par->vbe_ib.oem_string_ptr) | |
475 | printk("OEM: %s, ", | |
476 | ((char *)task->buf) + par->vbe_ib.oem_string_ptr); | |
477 | ||
478 | printk("VBE v%d.%d\n", ((par->vbe_ib.vbe_version & 0xff00) >> 8), | |
479 | par->vbe_ib.vbe_version & 0xff); | |
480 | ||
481 | return 0; | |
482 | } | |
483 | ||
484 | static int __devinit uvesafb_vbe_getmodes(struct uvesafb_ktask *task, | |
485 | struct uvesafb_par *par) | |
486 | { | |
487 | int off = 0, err; | |
488 | u16 *mode; | |
489 | ||
490 | par->vbe_modes_cnt = 0; | |
491 | ||
492 | /* Count available modes. */ | |
493 | mode = (u16 *) (((u8 *)&par->vbe_ib) + par->vbe_ib.mode_list_ptr); | |
494 | while (*mode != 0xffff) { | |
495 | par->vbe_modes_cnt++; | |
496 | mode++; | |
497 | } | |
498 | ||
499 | par->vbe_modes = kzalloc(sizeof(struct vbe_mode_ib) * | |
500 | par->vbe_modes_cnt, GFP_KERNEL); | |
501 | if (!par->vbe_modes) | |
502 | return -ENOMEM; | |
503 | ||
504 | /* Get info about all available modes. */ | |
505 | mode = (u16 *) (((u8 *)&par->vbe_ib) + par->vbe_ib.mode_list_ptr); | |
506 | while (*mode != 0xffff) { | |
507 | struct vbe_mode_ib *mib; | |
508 | ||
509 | uvesafb_reset(task); | |
510 | task->t.regs.eax = 0x4f01; | |
511 | task->t.regs.ecx = (u32) *mode; | |
512 | task->t.flags = TF_BUF_RET | TF_BUF_ESDI; | |
513 | task->t.buf_len = sizeof(struct vbe_mode_ib); | |
514 | task->buf = par->vbe_modes + off; | |
515 | ||
516 | err = uvesafb_exec(task); | |
517 | if (err || (task->t.regs.eax & 0xffff) != 0x004f) { | |
518 | printk(KERN_ERR "uvesafb: Getting mode info block " | |
519 | "for mode 0x%x failed (eax=0x%x, err=%d)\n", | |
520 | *mode, (u32)task->t.regs.eax, err); | |
521 | return -EINVAL; | |
522 | } | |
523 | ||
524 | mib = task->buf; | |
525 | mib->mode_id = *mode; | |
526 | ||
527 | /* | |
528 | * We only want modes that are supported with the current | |
529 | * hardware configuration, color, graphics and that have | |
530 | * support for the LFB. | |
531 | */ | |
532 | if ((mib->mode_attr & VBE_MODE_MASK) == VBE_MODE_MASK && | |
533 | mib->bits_per_pixel >= 8) | |
534 | off++; | |
535 | else | |
536 | par->vbe_modes_cnt--; | |
537 | ||
538 | mode++; | |
539 | mib->depth = mib->red_len + mib->green_len + mib->blue_len; | |
540 | ||
541 | /* | |
542 | * Handle 8bpp modes and modes with broken color component | |
543 | * lengths. | |
544 | */ | |
545 | if (mib->depth == 0 || (mib->depth == 24 && | |
546 | mib->bits_per_pixel == 32)) | |
547 | mib->depth = mib->bits_per_pixel; | |
548 | } | |
549 | ||
550 | return 0; | |
551 | } | |
552 | ||
553 | /* | |
554 | * The Protected Mode Interface is 32-bit x86 code, so we only run it on | |
555 | * x86 and not x86_64. | |
556 | */ | |
557 | #ifdef CONFIG_X86_32 | |
558 | static int __devinit uvesafb_vbe_getpmi(struct uvesafb_ktask *task, | |
559 | struct uvesafb_par *par) | |
560 | { | |
561 | int i, err; | |
562 | ||
563 | uvesafb_reset(task); | |
564 | task->t.regs.eax = 0x4f0a; | |
565 | task->t.regs.ebx = 0x0; | |
566 | err = uvesafb_exec(task); | |
567 | ||
568 | if ((task->t.regs.eax & 0xffff) != 0x4f || task->t.regs.es < 0xc000) { | |
569 | par->pmi_setpal = par->ypan = 0; | |
570 | } else { | |
571 | par->pmi_base = (u16 *)phys_to_virt(((u32)task->t.regs.es << 4) | |
572 | + task->t.regs.edi); | |
573 | par->pmi_start = (u8 *)par->pmi_base + par->pmi_base[1]; | |
574 | par->pmi_pal = (u8 *)par->pmi_base + par->pmi_base[2]; | |
575 | printk(KERN_INFO "uvesafb: protected mode interface info at " | |
576 | "%04x:%04x\n", | |
577 | (u16)task->t.regs.es, (u16)task->t.regs.edi); | |
578 | printk(KERN_INFO "uvesafb: pmi: set display start = %p, " | |
579 | "set palette = %p\n", par->pmi_start, | |
580 | par->pmi_pal); | |
581 | ||
582 | if (par->pmi_base[3]) { | |
583 | printk(KERN_INFO "uvesafb: pmi: ports = "); | |
584 | for (i = par->pmi_base[3]/2; | |
585 | par->pmi_base[i] != 0xffff; i++) | |
586 | printk("%x ", par->pmi_base[i]); | |
587 | printk("\n"); | |
588 | ||
589 | if (par->pmi_base[i] != 0xffff) { | |
590 | printk(KERN_INFO "uvesafb: can't handle memory" | |
591 | " requests, pmi disabled\n"); | |
592 | par->ypan = par->pmi_setpal = 0; | |
593 | } | |
594 | } | |
595 | } | |
596 | return 0; | |
597 | } | |
598 | #endif /* CONFIG_X86_32 */ | |
599 | ||
600 | /* | |
601 | * Check whether a video mode is supported by the Video BIOS and is | |
602 | * compatible with the monitor limits. | |
603 | */ | |
604 | static int __devinit uvesafb_is_valid_mode(struct fb_videomode *mode, | |
605 | struct fb_info *info) | |
606 | { | |
607 | if (info->monspecs.gtf) { | |
608 | fb_videomode_to_var(&info->var, mode); | |
609 | if (fb_validate_mode(&info->var, info)) | |
610 | return 0; | |
611 | } | |
612 | ||
613 | if (uvesafb_vbe_find_mode(info->par, mode->xres, mode->yres, 8, | |
614 | UVESAFB_EXACT_RES) == -1) | |
615 | return 0; | |
616 | ||
617 | return 1; | |
618 | } | |
619 | ||
620 | static int __devinit uvesafb_vbe_getedid(struct uvesafb_ktask *task, | |
621 | struct fb_info *info) | |
622 | { | |
623 | struct uvesafb_par *par = info->par; | |
624 | int err = 0; | |
625 | ||
626 | if (noedid || par->vbe_ib.vbe_version < 0x0300) | |
627 | return -EINVAL; | |
628 | ||
629 | task->t.regs.eax = 0x4f15; | |
630 | task->t.regs.ebx = 0; | |
631 | task->t.regs.ecx = 0; | |
632 | task->t.buf_len = 0; | |
633 | task->t.flags = 0; | |
634 | ||
635 | err = uvesafb_exec(task); | |
636 | ||
637 | if ((task->t.regs.eax & 0xffff) != 0x004f || err) | |
638 | return -EINVAL; | |
639 | ||
640 | if ((task->t.regs.ebx & 0x3) == 3) { | |
641 | printk(KERN_INFO "uvesafb: VBIOS/hardware supports both " | |
642 | "DDC1 and DDC2 transfers\n"); | |
643 | } else if ((task->t.regs.ebx & 0x3) == 2) { | |
644 | printk(KERN_INFO "uvesafb: VBIOS/hardware supports DDC2 " | |
645 | "transfers\n"); | |
646 | } else if ((task->t.regs.ebx & 0x3) == 1) { | |
647 | printk(KERN_INFO "uvesafb: VBIOS/hardware supports DDC1 " | |
648 | "transfers\n"); | |
649 | } else { | |
650 | printk(KERN_INFO "uvesafb: VBIOS/hardware doesn't support " | |
651 | "DDC transfers\n"); | |
652 | return -EINVAL; | |
653 | } | |
654 | ||
655 | task->t.regs.eax = 0x4f15; | |
656 | task->t.regs.ebx = 1; | |
657 | task->t.regs.ecx = task->t.regs.edx = 0; | |
658 | task->t.flags = TF_BUF_RET | TF_BUF_ESDI; | |
659 | task->t.buf_len = EDID_LENGTH; | |
660 | task->buf = kzalloc(EDID_LENGTH, GFP_KERNEL); | |
661 | ||
662 | err = uvesafb_exec(task); | |
663 | ||
664 | if ((task->t.regs.eax & 0xffff) == 0x004f && !err) { | |
665 | fb_edid_to_monspecs(task->buf, &info->monspecs); | |
666 | ||
667 | if (info->monspecs.vfmax && info->monspecs.hfmax) { | |
668 | /* | |
669 | * If the maximum pixel clock wasn't specified in | |
670 | * the EDID block, set it to 300 MHz. | |
671 | */ | |
672 | if (info->monspecs.dclkmax == 0) | |
673 | info->monspecs.dclkmax = 300 * 1000000; | |
674 | info->monspecs.gtf = 1; | |
675 | } | |
676 | } else { | |
677 | err = -EINVAL; | |
678 | } | |
679 | ||
680 | kfree(task->buf); | |
681 | return err; | |
682 | } | |
683 | ||
684 | static void __devinit uvesafb_vbe_getmonspecs(struct uvesafb_ktask *task, | |
685 | struct fb_info *info) | |
686 | { | |
687 | struct uvesafb_par *par = info->par; | |
688 | int i; | |
689 | ||
690 | memset(&info->monspecs, 0, sizeof(info->monspecs)); | |
691 | ||
692 | /* | |
693 | * If we don't get all necessary data from the EDID block, | |
694 | * mark it as incompatible with the GTF and set nocrtc so | |
695 | * that we always use the default BIOS refresh rate. | |
696 | */ | |
697 | if (uvesafb_vbe_getedid(task, info)) { | |
698 | info->monspecs.gtf = 0; | |
699 | par->nocrtc = 1; | |
700 | } | |
701 | ||
702 | /* Kernel command line overrides. */ | |
703 | if (maxclk) | |
704 | info->monspecs.dclkmax = maxclk * 1000000; | |
705 | if (maxvf) | |
706 | info->monspecs.vfmax = maxvf; | |
707 | if (maxhf) | |
708 | info->monspecs.hfmax = maxhf * 1000; | |
709 | ||
710 | /* | |
711 | * In case DDC transfers are not supported, the user can provide | |
712 | * monitor limits manually. Lower limits are set to "safe" values. | |
713 | */ | |
714 | if (info->monspecs.gtf == 0 && maxclk && maxvf && maxhf) { | |
715 | info->monspecs.dclkmin = 0; | |
716 | info->monspecs.vfmin = 60; | |
717 | info->monspecs.hfmin = 29000; | |
718 | info->monspecs.gtf = 1; | |
719 | par->nocrtc = 0; | |
720 | } | |
721 | ||
722 | if (info->monspecs.gtf) | |
723 | printk(KERN_INFO | |
724 | "uvesafb: monitor limits: vf = %d Hz, hf = %d kHz, " | |
725 | "clk = %d MHz\n", info->monspecs.vfmax, | |
726 | (int)(info->monspecs.hfmax / 1000), | |
727 | (int)(info->monspecs.dclkmax / 1000000)); | |
728 | else | |
729 | printk(KERN_INFO "uvesafb: no monitor limits have been set, " | |
730 | "default refresh rate will be used\n"); | |
731 | ||
732 | /* Add VBE modes to the modelist. */ | |
733 | for (i = 0; i < par->vbe_modes_cnt; i++) { | |
734 | struct fb_var_screeninfo var; | |
735 | struct vbe_mode_ib *mode; | |
736 | struct fb_videomode vmode; | |
737 | ||
738 | mode = &par->vbe_modes[i]; | |
739 | memset(&var, 0, sizeof(var)); | |
740 | ||
741 | var.xres = mode->x_res; | |
742 | var.yres = mode->y_res; | |
743 | ||
744 | fb_get_mode(FB_VSYNCTIMINGS | FB_IGNOREMON, 60, &var, info); | |
745 | fb_var_to_videomode(&vmode, &var); | |
746 | fb_add_videomode(&vmode, &info->modelist); | |
747 | } | |
748 | ||
749 | /* Add valid VESA modes to our modelist. */ | |
750 | for (i = 0; i < VESA_MODEDB_SIZE; i++) { | |
751 | if (uvesafb_is_valid_mode((struct fb_videomode *) | |
752 | &vesa_modes[i], info)) | |
753 | fb_add_videomode(&vesa_modes[i], &info->modelist); | |
754 | } | |
755 | ||
756 | for (i = 0; i < info->monspecs.modedb_len; i++) { | |
757 | if (uvesafb_is_valid_mode(&info->monspecs.modedb[i], info)) | |
758 | fb_add_videomode(&info->monspecs.modedb[i], | |
759 | &info->modelist); | |
760 | } | |
761 | ||
762 | return; | |
763 | } | |
764 | ||
765 | static void __devinit uvesafb_vbe_getstatesize(struct uvesafb_ktask *task, | |
766 | struct uvesafb_par *par) | |
767 | { | |
768 | int err; | |
769 | ||
770 | uvesafb_reset(task); | |
771 | ||
772 | /* | |
773 | * Get the VBE state buffer size. We want all available | |
774 | * hardware state data (CL = 0x0f). | |
775 | */ | |
776 | task->t.regs.eax = 0x4f04; | |
777 | task->t.regs.ecx = 0x000f; | |
778 | task->t.regs.edx = 0x0000; | |
779 | task->t.flags = 0; | |
780 | ||
781 | err = uvesafb_exec(task); | |
782 | ||
783 | if (err || (task->t.regs.eax & 0xffff) != 0x004f) { | |
784 | printk(KERN_WARNING "uvesafb: VBE state buffer size " | |
785 | "cannot be determined (eax=0x%x, err=%d)\n", | |
786 | task->t.regs.eax, err); | |
787 | par->vbe_state_size = 0; | |
788 | return; | |
789 | } | |
790 | ||
791 | par->vbe_state_size = 64 * (task->t.regs.ebx & 0xffff); | |
792 | } | |
793 | ||
794 | static int __devinit uvesafb_vbe_init(struct fb_info *info) | |
795 | { | |
796 | struct uvesafb_ktask *task = NULL; | |
797 | struct uvesafb_par *par = info->par; | |
798 | int err; | |
799 | ||
800 | task = uvesafb_prep(); | |
801 | if (!task) | |
802 | return -ENOMEM; | |
803 | ||
804 | err = uvesafb_vbe_getinfo(task, par); | |
805 | if (err) | |
806 | goto out; | |
807 | ||
808 | err = uvesafb_vbe_getmodes(task, par); | |
809 | if (err) | |
810 | goto out; | |
811 | ||
812 | par->nocrtc = nocrtc; | |
813 | #ifdef CONFIG_X86_32 | |
814 | par->pmi_setpal = pmi_setpal; | |
815 | par->ypan = ypan; | |
816 | ||
817 | if (par->pmi_setpal || par->ypan) | |
818 | uvesafb_vbe_getpmi(task, par); | |
819 | #else | |
820 | /* The protected mode interface is not available on non-x86. */ | |
821 | par->pmi_setpal = par->ypan = 0; | |
822 | #endif | |
823 | ||
824 | INIT_LIST_HEAD(&info->modelist); | |
825 | uvesafb_vbe_getmonspecs(task, info); | |
826 | uvesafb_vbe_getstatesize(task, par); | |
827 | ||
828 | out: uvesafb_free(task); | |
829 | return err; | |
830 | } | |
831 | ||
832 | static int __devinit uvesafb_vbe_init_mode(struct fb_info *info) | |
833 | { | |
834 | struct list_head *pos; | |
835 | struct fb_modelist *modelist; | |
836 | struct fb_videomode *mode; | |
837 | struct uvesafb_par *par = info->par; | |
838 | int i, modeid; | |
839 | ||
840 | /* Has the user requested a specific VESA mode? */ | |
841 | if (vbemode) { | |
842 | for (i = 0; i < par->vbe_modes_cnt; i++) { | |
843 | if (par->vbe_modes[i].mode_id == vbemode) { | |
844 | fb_get_mode(FB_VSYNCTIMINGS | FB_IGNOREMON, 60, | |
845 | &info->var, info); | |
846 | /* | |
847 | * With pixclock set to 0, the default BIOS | |
848 | * timings will be used in set_par(). | |
849 | */ | |
850 | info->var.pixclock = 0; | |
851 | modeid = i; | |
852 | goto gotmode; | |
853 | } | |
854 | } | |
855 | printk(KERN_INFO "uvesafb: requested VBE mode 0x%x is " | |
856 | "unavailable\n", vbemode); | |
857 | vbemode = 0; | |
858 | } | |
859 | ||
860 | /* Count the modes in the modelist */ | |
861 | i = 0; | |
862 | list_for_each(pos, &info->modelist) | |
863 | i++; | |
864 | ||
865 | /* | |
866 | * Convert the modelist into a modedb so that we can use it with | |
867 | * fb_find_mode(). | |
868 | */ | |
869 | mode = kzalloc(i * sizeof(*mode), GFP_KERNEL); | |
870 | if (mode) { | |
871 | i = 0; | |
872 | list_for_each(pos, &info->modelist) { | |
873 | modelist = list_entry(pos, struct fb_modelist, list); | |
874 | mode[i] = modelist->mode; | |
875 | i++; | |
876 | } | |
877 | ||
878 | if (!mode_option) | |
879 | mode_option = UVESAFB_DEFAULT_MODE; | |
880 | ||
881 | i = fb_find_mode(&info->var, info, mode_option, mode, i, | |
882 | NULL, 8); | |
883 | ||
884 | kfree(mode); | |
885 | } | |
886 | ||
887 | /* fb_find_mode() failed */ | |
5e72b32d | 888 | if (i == 0) { |
8bdb3a2d MJ |
889 | info->var.xres = 640; |
890 | info->var.yres = 480; | |
891 | mode = (struct fb_videomode *) | |
892 | fb_find_best_mode(&info->var, &info->modelist); | |
893 | ||
894 | if (mode) { | |
895 | fb_videomode_to_var(&info->var, mode); | |
896 | } else { | |
897 | modeid = par->vbe_modes[0].mode_id; | |
898 | fb_get_mode(FB_VSYNCTIMINGS | FB_IGNOREMON, 60, | |
899 | &info->var, info); | |
900 | goto gotmode; | |
901 | } | |
902 | } | |
903 | ||
904 | /* Look for a matching VBE mode. */ | |
905 | modeid = uvesafb_vbe_find_mode(par, info->var.xres, info->var.yres, | |
906 | info->var.bits_per_pixel, UVESAFB_EXACT_RES); | |
907 | ||
908 | if (modeid == -1) | |
909 | return -EINVAL; | |
910 | ||
911 | gotmode: | |
912 | uvesafb_setup_var(&info->var, info, &par->vbe_modes[modeid]); | |
913 | ||
914 | /* | |
915 | * If we are not VBE3.0+ compliant, we're done -- the BIOS will | |
916 | * ignore our timings anyway. | |
917 | */ | |
918 | if (par->vbe_ib.vbe_version < 0x0300 || par->nocrtc) | |
919 | fb_get_mode(FB_VSYNCTIMINGS | FB_IGNOREMON, 60, | |
920 | &info->var, info); | |
921 | ||
922 | return modeid; | |
923 | } | |
924 | ||
925 | static int uvesafb_setpalette(struct uvesafb_pal_entry *entries, int count, | |
926 | int start, struct fb_info *info) | |
927 | { | |
928 | struct uvesafb_ktask *task; | |
03ad369a | 929 | #ifdef CONFIG_X86 |
8bdb3a2d MJ |
930 | struct uvesafb_par *par = info->par; |
931 | int i = par->mode_idx; | |
03ad369a | 932 | #endif |
8bdb3a2d MJ |
933 | int err = 0; |
934 | ||
935 | /* | |
936 | * We support palette modifications for 8 bpp modes only, so | |
937 | * there can never be more than 256 entries. | |
938 | */ | |
939 | if (start + count > 256) | |
940 | return -EINVAL; | |
941 | ||
942 | #ifdef CONFIG_X86 | |
943 | /* Use VGA registers if mode is VGA-compatible. */ | |
944 | if (i >= 0 && i < par->vbe_modes_cnt && | |
945 | par->vbe_modes[i].mode_attr & VBE_MODE_VGACOMPAT) { | |
946 | for (i = 0; i < count; i++) { | |
947 | outb_p(start + i, dac_reg); | |
948 | outb_p(entries[i].red, dac_val); | |
949 | outb_p(entries[i].green, dac_val); | |
950 | outb_p(entries[i].blue, dac_val); | |
951 | } | |
952 | } | |
953 | #ifdef CONFIG_X86_32 | |
954 | else if (par->pmi_setpal) { | |
955 | __asm__ __volatile__( | |
956 | "call *(%%esi)" | |
957 | : /* no return value */ | |
958 | : "a" (0x4f09), /* EAX */ | |
959 | "b" (0), /* EBX */ | |
960 | "c" (count), /* ECX */ | |
961 | "d" (start), /* EDX */ | |
962 | "D" (entries), /* EDI */ | |
963 | "S" (&par->pmi_pal)); /* ESI */ | |
964 | } | |
965 | #endif /* CONFIG_X86_32 */ | |
966 | else | |
967 | #endif /* CONFIG_X86 */ | |
968 | { | |
969 | task = uvesafb_prep(); | |
970 | if (!task) | |
971 | return -ENOMEM; | |
972 | ||
973 | task->t.regs.eax = 0x4f09; | |
974 | task->t.regs.ebx = 0x0; | |
975 | task->t.regs.ecx = count; | |
976 | task->t.regs.edx = start; | |
977 | task->t.flags = TF_BUF_ESDI; | |
978 | task->t.buf_len = sizeof(struct uvesafb_pal_entry) * count; | |
979 | task->buf = entries; | |
980 | ||
981 | err = uvesafb_exec(task); | |
982 | if ((task->t.regs.eax & 0xffff) != 0x004f) | |
983 | err = 1; | |
984 | ||
985 | uvesafb_free(task); | |
986 | } | |
987 | return err; | |
988 | } | |
989 | ||
990 | static int uvesafb_setcolreg(unsigned regno, unsigned red, unsigned green, | |
991 | unsigned blue, unsigned transp, | |
992 | struct fb_info *info) | |
993 | { | |
994 | struct uvesafb_pal_entry entry; | |
995 | int shift = 16 - info->var.green.length; | |
996 | int err = 0; | |
997 | ||
998 | if (regno >= info->cmap.len) | |
999 | return -EINVAL; | |
1000 | ||
1001 | if (info->var.bits_per_pixel == 8) { | |
1002 | entry.red = red >> shift; | |
1003 | entry.green = green >> shift; | |
1004 | entry.blue = blue >> shift; | |
1005 | entry.pad = 0; | |
1006 | ||
1007 | err = uvesafb_setpalette(&entry, 1, regno, info); | |
1008 | } else if (regno < 16) { | |
1009 | switch (info->var.bits_per_pixel) { | |
1010 | case 16: | |
1011 | if (info->var.red.offset == 10) { | |
1012 | /* 1:5:5:5 */ | |
1013 | ((u32 *) (info->pseudo_palette))[regno] = | |
1014 | ((red & 0xf800) >> 1) | | |
1015 | ((green & 0xf800) >> 6) | | |
1016 | ((blue & 0xf800) >> 11); | |
1017 | } else { | |
1018 | /* 0:5:6:5 */ | |
1019 | ((u32 *) (info->pseudo_palette))[regno] = | |
1020 | ((red & 0xf800) ) | | |
1021 | ((green & 0xfc00) >> 5) | | |
1022 | ((blue & 0xf800) >> 11); | |
1023 | } | |
1024 | break; | |
1025 | ||
1026 | case 24: | |
1027 | case 32: | |
1028 | red >>= 8; | |
1029 | green >>= 8; | |
1030 | blue >>= 8; | |
1031 | ((u32 *)(info->pseudo_palette))[regno] = | |
1032 | (red << info->var.red.offset) | | |
1033 | (green << info->var.green.offset) | | |
1034 | (blue << info->var.blue.offset); | |
1035 | break; | |
1036 | } | |
1037 | } | |
1038 | return err; | |
1039 | } | |
1040 | ||
1041 | static int uvesafb_setcmap(struct fb_cmap *cmap, struct fb_info *info) | |
1042 | { | |
1043 | struct uvesafb_pal_entry *entries; | |
1044 | int shift = 16 - info->var.green.length; | |
1045 | int i, err = 0; | |
1046 | ||
1047 | if (info->var.bits_per_pixel == 8) { | |
1048 | if (cmap->start + cmap->len > info->cmap.start + | |
1049 | info->cmap.len || cmap->start < info->cmap.start) | |
1050 | return -EINVAL; | |
1051 | ||
1052 | entries = kmalloc(sizeof(*entries) * cmap->len, GFP_KERNEL); | |
1053 | if (!entries) | |
1054 | return -ENOMEM; | |
1055 | ||
1056 | for (i = 0; i < cmap->len; i++) { | |
1057 | entries[i].red = cmap->red[i] >> shift; | |
1058 | entries[i].green = cmap->green[i] >> shift; | |
1059 | entries[i].blue = cmap->blue[i] >> shift; | |
1060 | entries[i].pad = 0; | |
1061 | } | |
1062 | err = uvesafb_setpalette(entries, cmap->len, cmap->start, info); | |
1063 | kfree(entries); | |
1064 | } else { | |
1065 | /* | |
1066 | * For modes with bpp > 8, we only set the pseudo palette in | |
1067 | * the fb_info struct. We rely on uvesafb_setcolreg to do all | |
1068 | * sanity checking. | |
1069 | */ | |
1070 | for (i = 0; i < cmap->len; i++) { | |
1071 | err |= uvesafb_setcolreg(cmap->start + i, cmap->red[i], | |
1072 | cmap->green[i], cmap->blue[i], | |
1073 | 0, info); | |
1074 | } | |
1075 | } | |
1076 | return err; | |
1077 | } | |
1078 | ||
1079 | static int uvesafb_pan_display(struct fb_var_screeninfo *var, | |
1080 | struct fb_info *info) | |
1081 | { | |
1082 | #ifdef CONFIG_X86_32 | |
1083 | int offset; | |
1084 | struct uvesafb_par *par = info->par; | |
1085 | ||
1086 | offset = (var->yoffset * info->fix.line_length + var->xoffset) / 4; | |
1087 | ||
1088 | /* | |
1089 | * It turns out it's not the best idea to do panning via vm86, | |
1090 | * so we only allow it if we have a PMI. | |
1091 | */ | |
1092 | if (par->pmi_start) { | |
1093 | __asm__ __volatile__( | |
1094 | "call *(%%edi)" | |
1095 | : /* no return value */ | |
1096 | : "a" (0x4f07), /* EAX */ | |
1097 | "b" (0), /* EBX */ | |
1098 | "c" (offset), /* ECX */ | |
1099 | "d" (offset >> 16), /* EDX */ | |
1100 | "D" (&par->pmi_start)); /* EDI */ | |
1101 | } | |
1102 | #endif | |
1103 | return 0; | |
1104 | } | |
1105 | ||
1106 | static int uvesafb_blank(int blank, struct fb_info *info) | |
1107 | { | |
8bdb3a2d MJ |
1108 | struct uvesafb_ktask *task; |
1109 | int err = 1; | |
8bdb3a2d | 1110 | #ifdef CONFIG_X86 |
03ad369a FL |
1111 | struct uvesafb_par *par = info->par; |
1112 | ||
8bdb3a2d MJ |
1113 | if (par->vbe_ib.capabilities & VBE_CAP_VGACOMPAT) { |
1114 | int loop = 10000; | |
1115 | u8 seq = 0, crtc17 = 0; | |
1116 | ||
1117 | if (blank == FB_BLANK_POWERDOWN) { | |
1118 | seq = 0x20; | |
1119 | crtc17 = 0x00; | |
1120 | err = 0; | |
1121 | } else { | |
1122 | seq = 0x00; | |
1123 | crtc17 = 0x80; | |
1124 | err = (blank == FB_BLANK_UNBLANK) ? 0 : -EINVAL; | |
1125 | } | |
1126 | ||
1127 | vga_wseq(NULL, 0x00, 0x01); | |
1128 | seq |= vga_rseq(NULL, 0x01) & ~0x20; | |
1129 | vga_wseq(NULL, 0x00, seq); | |
1130 | ||
1131 | crtc17 |= vga_rcrt(NULL, 0x17) & ~0x80; | |
1132 | while (loop--); | |
1133 | vga_wcrt(NULL, 0x17, crtc17); | |
1134 | vga_wseq(NULL, 0x00, 0x03); | |
1135 | } else | |
1136 | #endif /* CONFIG_X86 */ | |
1137 | { | |
1138 | task = uvesafb_prep(); | |
1139 | if (!task) | |
1140 | return -ENOMEM; | |
1141 | ||
1142 | task->t.regs.eax = 0x4f10; | |
1143 | switch (blank) { | |
1144 | case FB_BLANK_UNBLANK: | |
1145 | task->t.regs.ebx = 0x0001; | |
1146 | break; | |
1147 | case FB_BLANK_NORMAL: | |
1148 | task->t.regs.ebx = 0x0101; /* standby */ | |
1149 | break; | |
1150 | case FB_BLANK_POWERDOWN: | |
1151 | task->t.regs.ebx = 0x0401; /* powerdown */ | |
1152 | break; | |
1153 | default: | |
1154 | goto out; | |
1155 | } | |
1156 | ||
1157 | err = uvesafb_exec(task); | |
1158 | if (err || (task->t.regs.eax & 0xffff) != 0x004f) | |
1159 | err = 1; | |
1160 | out: uvesafb_free(task); | |
1161 | } | |
1162 | return err; | |
1163 | } | |
1164 | ||
1165 | static int uvesafb_open(struct fb_info *info, int user) | |
1166 | { | |
1167 | struct uvesafb_par *par = info->par; | |
1168 | int cnt = atomic_read(&par->ref_count); | |
1169 | ||
1170 | if (!cnt && par->vbe_state_size) | |
1171 | par->vbe_state_orig = uvesafb_vbe_state_save(par); | |
1172 | ||
1173 | atomic_inc(&par->ref_count); | |
1174 | return 0; | |
1175 | } | |
1176 | ||
1177 | static int uvesafb_release(struct fb_info *info, int user) | |
1178 | { | |
1179 | struct uvesafb_ktask *task = NULL; | |
1180 | struct uvesafb_par *par = info->par; | |
1181 | int cnt = atomic_read(&par->ref_count); | |
1182 | ||
1183 | if (!cnt) | |
1184 | return -EINVAL; | |
1185 | ||
1186 | if (cnt != 1) | |
1187 | goto out; | |
1188 | ||
1189 | task = uvesafb_prep(); | |
1190 | if (!task) | |
1191 | goto out; | |
1192 | ||
1193 | /* First, try to set the standard 80x25 text mode. */ | |
1194 | task->t.regs.eax = 0x0003; | |
1195 | uvesafb_exec(task); | |
1196 | ||
1197 | /* | |
1198 | * Now try to restore whatever hardware state we might have | |
1199 | * saved when the fb device was first opened. | |
1200 | */ | |
1201 | uvesafb_vbe_state_restore(par, par->vbe_state_orig); | |
1202 | out: | |
1203 | atomic_dec(&par->ref_count); | |
1204 | if (task) | |
1205 | uvesafb_free(task); | |
1206 | return 0; | |
1207 | } | |
1208 | ||
1209 | static int uvesafb_set_par(struct fb_info *info) | |
1210 | { | |
1211 | struct uvesafb_par *par = info->par; | |
1212 | struct uvesafb_ktask *task = NULL; | |
1213 | struct vbe_crtc_ib *crtc = NULL; | |
1214 | struct vbe_mode_ib *mode = NULL; | |
1215 | int i, err = 0, depth = info->var.bits_per_pixel; | |
1216 | ||
1217 | if (depth > 8 && depth != 32) | |
1218 | depth = info->var.red.length + info->var.green.length + | |
1219 | info->var.blue.length; | |
1220 | ||
1221 | i = uvesafb_vbe_find_mode(par, info->var.xres, info->var.yres, depth, | |
1222 | UVESAFB_EXACT_RES | UVESAFB_EXACT_DEPTH); | |
1223 | if (i >= 0) | |
1224 | mode = &par->vbe_modes[i]; | |
1225 | else | |
1226 | return -EINVAL; | |
1227 | ||
1228 | task = uvesafb_prep(); | |
1229 | if (!task) | |
1230 | return -ENOMEM; | |
1231 | setmode: | |
1232 | task->t.regs.eax = 0x4f02; | |
1233 | task->t.regs.ebx = mode->mode_id | 0x4000; /* use LFB */ | |
1234 | ||
1235 | if (par->vbe_ib.vbe_version >= 0x0300 && !par->nocrtc && | |
1236 | info->var.pixclock != 0) { | |
1237 | task->t.regs.ebx |= 0x0800; /* use CRTC data */ | |
1238 | task->t.flags = TF_BUF_ESDI; | |
1239 | crtc = kzalloc(sizeof(struct vbe_crtc_ib), GFP_KERNEL); | |
1240 | if (!crtc) { | |
1241 | err = -ENOMEM; | |
1242 | goto out; | |
1243 | } | |
1244 | crtc->horiz_start = info->var.xres + info->var.right_margin; | |
1245 | crtc->horiz_end = crtc->horiz_start + info->var.hsync_len; | |
1246 | crtc->horiz_total = crtc->horiz_end + info->var.left_margin; | |
1247 | ||
1248 | crtc->vert_start = info->var.yres + info->var.lower_margin; | |
1249 | crtc->vert_end = crtc->vert_start + info->var.vsync_len; | |
1250 | crtc->vert_total = crtc->vert_end + info->var.upper_margin; | |
1251 | ||
1252 | crtc->pixel_clock = PICOS2KHZ(info->var.pixclock) * 1000; | |
1253 | crtc->refresh_rate = (u16)(100 * (crtc->pixel_clock / | |
1254 | (crtc->vert_total * crtc->horiz_total))); | |
1255 | ||
1256 | if (info->var.vmode & FB_VMODE_DOUBLE) | |
1257 | crtc->flags |= 0x1; | |
1258 | if (info->var.vmode & FB_VMODE_INTERLACED) | |
1259 | crtc->flags |= 0x2; | |
1260 | if (!(info->var.sync & FB_SYNC_HOR_HIGH_ACT)) | |
1261 | crtc->flags |= 0x4; | |
1262 | if (!(info->var.sync & FB_SYNC_VERT_HIGH_ACT)) | |
1263 | crtc->flags |= 0x8; | |
1264 | memcpy(&par->crtc, crtc, sizeof(*crtc)); | |
1265 | } else { | |
1266 | memset(&par->crtc, 0, sizeof(*crtc)); | |
1267 | } | |
1268 | ||
1269 | task->t.buf_len = sizeof(struct vbe_crtc_ib); | |
1270 | task->buf = &par->crtc; | |
1271 | ||
1272 | err = uvesafb_exec(task); | |
1273 | if (err || (task->t.regs.eax & 0xffff) != 0x004f) { | |
1274 | /* | |
1275 | * The mode switch might have failed because we tried to | |
1276 | * use our own timings. Try again with the default timings. | |
1277 | */ | |
1278 | if (crtc != NULL) { | |
1279 | printk(KERN_WARNING "uvesafb: mode switch failed " | |
1280 | "(eax=0x%x, err=%d). Trying again with " | |
1281 | "default timings.\n", task->t.regs.eax, err); | |
1282 | uvesafb_reset(task); | |
1283 | kfree(crtc); | |
1284 | crtc = NULL; | |
1285 | info->var.pixclock = 0; | |
1286 | goto setmode; | |
1287 | } else { | |
1288 | printk(KERN_ERR "uvesafb: mode switch failed (eax=" | |
1289 | "0x%x, err=%d)\n", task->t.regs.eax, err); | |
1290 | err = -EINVAL; | |
1291 | goto out; | |
1292 | } | |
1293 | } | |
1294 | par->mode_idx = i; | |
1295 | ||
1296 | /* For 8bpp modes, always try to set the DAC to 8 bits. */ | |
1297 | if (par->vbe_ib.capabilities & VBE_CAP_CAN_SWITCH_DAC && | |
1298 | mode->bits_per_pixel <= 8) { | |
1299 | uvesafb_reset(task); | |
1300 | task->t.regs.eax = 0x4f08; | |
1301 | task->t.regs.ebx = 0x0800; | |
1302 | ||
1303 | err = uvesafb_exec(task); | |
1304 | if (err || (task->t.regs.eax & 0xffff) != 0x004f || | |
1305 | ((task->t.regs.ebx & 0xff00) >> 8) != 8) { | |
1306 | /* | |
1307 | * We've failed to set the DAC palette format - | |
1308 | * time to correct var. | |
1309 | */ | |
1310 | info->var.red.length = 6; | |
1311 | info->var.green.length = 6; | |
1312 | info->var.blue.length = 6; | |
1313 | } | |
1314 | } | |
1315 | ||
1316 | info->fix.visual = (info->var.bits_per_pixel == 8) ? | |
1317 | FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_TRUECOLOR; | |
1318 | info->fix.line_length = mode->bytes_per_scan_line; | |
1319 | ||
1320 | out: if (crtc != NULL) | |
1321 | kfree(crtc); | |
1322 | uvesafb_free(task); | |
1323 | ||
1324 | return err; | |
1325 | } | |
1326 | ||
1327 | static void uvesafb_check_limits(struct fb_var_screeninfo *var, | |
1328 | struct fb_info *info) | |
1329 | { | |
1330 | const struct fb_videomode *mode; | |
1331 | struct uvesafb_par *par = info->par; | |
1332 | ||
1333 | /* | |
1334 | * If pixclock is set to 0, then we're using default BIOS timings | |
1335 | * and thus don't have to perform any checks here. | |
1336 | */ | |
1337 | if (!var->pixclock) | |
1338 | return; | |
1339 | ||
1340 | if (par->vbe_ib.vbe_version < 0x0300) { | |
1341 | fb_get_mode(FB_VSYNCTIMINGS | FB_IGNOREMON, 60, var, info); | |
1342 | return; | |
1343 | } | |
1344 | ||
1345 | if (!fb_validate_mode(var, info)) | |
1346 | return; | |
1347 | ||
1348 | mode = fb_find_best_mode(var, &info->modelist); | |
1349 | if (mode) { | |
1350 | if (mode->xres == var->xres && mode->yres == var->yres && | |
1351 | !(mode->vmode & (FB_VMODE_INTERLACED | FB_VMODE_DOUBLE))) { | |
1352 | fb_videomode_to_var(var, mode); | |
1353 | return; | |
1354 | } | |
1355 | } | |
1356 | ||
1357 | if (info->monspecs.gtf && !fb_get_mode(FB_MAXTIMINGS, 0, var, info)) | |
1358 | return; | |
1359 | /* Use default refresh rate */ | |
1360 | var->pixclock = 0; | |
1361 | } | |
1362 | ||
1363 | static int uvesafb_check_var(struct fb_var_screeninfo *var, | |
1364 | struct fb_info *info) | |
1365 | { | |
1366 | struct uvesafb_par *par = info->par; | |
1367 | struct vbe_mode_ib *mode = NULL; | |
1368 | int match = -1; | |
1369 | int depth = var->red.length + var->green.length + var->blue.length; | |
1370 | ||
1371 | /* | |
1372 | * Various apps will use bits_per_pixel to set the color depth, | |
1373 | * which is theoretically incorrect, but which we'll try to handle | |
1374 | * here. | |
1375 | */ | |
1376 | if (depth == 0 || abs(depth - var->bits_per_pixel) >= 8) | |
1377 | depth = var->bits_per_pixel; | |
1378 | ||
1379 | match = uvesafb_vbe_find_mode(par, var->xres, var->yres, depth, | |
1380 | UVESAFB_EXACT_RES); | |
1381 | if (match == -1) | |
1382 | return -EINVAL; | |
1383 | ||
1384 | mode = &par->vbe_modes[match]; | |
1385 | uvesafb_setup_var(var, info, mode); | |
1386 | ||
1387 | /* | |
1388 | * Check whether we have remapped enough memory for this mode. | |
1389 | * We might be called at an early stage, when we haven't remapped | |
1390 | * any memory yet, in which case we simply skip the check. | |
1391 | */ | |
1392 | if (var->yres * mode->bytes_per_scan_line > info->fix.smem_len | |
1393 | && info->fix.smem_len) | |
1394 | return -EINVAL; | |
1395 | ||
1396 | if ((var->vmode & FB_VMODE_DOUBLE) && | |
1397 | !(par->vbe_modes[match].mode_attr & 0x100)) | |
1398 | var->vmode &= ~FB_VMODE_DOUBLE; | |
1399 | ||
1400 | if ((var->vmode & FB_VMODE_INTERLACED) && | |
1401 | !(par->vbe_modes[match].mode_attr & 0x200)) | |
1402 | var->vmode &= ~FB_VMODE_INTERLACED; | |
1403 | ||
1404 | uvesafb_check_limits(var, info); | |
1405 | ||
1406 | var->xres_virtual = var->xres; | |
1407 | var->yres_virtual = (par->ypan) ? | |
1408 | info->fix.smem_len / mode->bytes_per_scan_line : | |
1409 | var->yres; | |
1410 | return 0; | |
1411 | } | |
1412 | ||
1413 | static void uvesafb_save_state(struct fb_info *info) | |
1414 | { | |
1415 | struct uvesafb_par *par = info->par; | |
1416 | ||
1417 | if (par->vbe_state_saved) | |
1418 | kfree(par->vbe_state_saved); | |
1419 | ||
1420 | par->vbe_state_saved = uvesafb_vbe_state_save(par); | |
1421 | } | |
1422 | ||
1423 | static void uvesafb_restore_state(struct fb_info *info) | |
1424 | { | |
1425 | struct uvesafb_par *par = info->par; | |
1426 | ||
1427 | uvesafb_vbe_state_restore(par, par->vbe_state_saved); | |
1428 | } | |
1429 | ||
1430 | static struct fb_ops uvesafb_ops = { | |
1431 | .owner = THIS_MODULE, | |
1432 | .fb_open = uvesafb_open, | |
1433 | .fb_release = uvesafb_release, | |
1434 | .fb_setcolreg = uvesafb_setcolreg, | |
1435 | .fb_setcmap = uvesafb_setcmap, | |
1436 | .fb_pan_display = uvesafb_pan_display, | |
1437 | .fb_blank = uvesafb_blank, | |
1438 | .fb_fillrect = cfb_fillrect, | |
1439 | .fb_copyarea = cfb_copyarea, | |
1440 | .fb_imageblit = cfb_imageblit, | |
1441 | .fb_check_var = uvesafb_check_var, | |
1442 | .fb_set_par = uvesafb_set_par, | |
1443 | .fb_save_state = uvesafb_save_state, | |
1444 | .fb_restore_state = uvesafb_restore_state, | |
1445 | }; | |
1446 | ||
1447 | static void __devinit uvesafb_init_info(struct fb_info *info, | |
1448 | struct vbe_mode_ib *mode) | |
1449 | { | |
1450 | unsigned int size_vmode; | |
1451 | unsigned int size_remap; | |
1452 | unsigned int size_total; | |
1453 | struct uvesafb_par *par = info->par; | |
1454 | int i, h; | |
1455 | ||
1456 | info->pseudo_palette = ((u8 *)info->par + sizeof(struct uvesafb_par)); | |
1457 | info->fix = uvesafb_fix; | |
1458 | info->fix.ypanstep = par->ypan ? 1 : 0; | |
1459 | info->fix.ywrapstep = (par->ypan > 1) ? 1 : 0; | |
1460 | ||
1461 | /* | |
1462 | * If we were unable to get the state buffer size, disable | |
1463 | * functions for saving and restoring the hardware state. | |
1464 | */ | |
1465 | if (par->vbe_state_size == 0) { | |
1466 | info->fbops->fb_save_state = NULL; | |
1467 | info->fbops->fb_restore_state = NULL; | |
1468 | } | |
1469 | ||
1470 | /* Disable blanking if the user requested so. */ | |
1471 | if (!blank) | |
1472 | info->fbops->fb_blank = NULL; | |
1473 | ||
1474 | /* | |
1475 | * Find out how much IO memory is required for the mode with | |
1476 | * the highest resolution. | |
1477 | */ | |
1478 | size_remap = 0; | |
1479 | for (i = 0; i < par->vbe_modes_cnt; i++) { | |
1480 | h = par->vbe_modes[i].bytes_per_scan_line * | |
1481 | par->vbe_modes[i].y_res; | |
1482 | if (h > size_remap) | |
1483 | size_remap = h; | |
1484 | } | |
1485 | size_remap *= 2; | |
1486 | ||
1487 | /* | |
1488 | * size_vmode -- that is the amount of memory needed for the | |
1489 | * used video mode, i.e. the minimum amount of | |
1490 | * memory we need. | |
1491 | */ | |
1492 | if (mode != NULL) { | |
1493 | size_vmode = info->var.yres * mode->bytes_per_scan_line; | |
1494 | } else { | |
1495 | size_vmode = info->var.yres * info->var.xres * | |
1496 | ((info->var.bits_per_pixel + 7) >> 3); | |
1497 | } | |
1498 | ||
1499 | /* | |
1500 | * size_total -- all video memory we have. Used for mtrr | |
1501 | * entries, resource allocation and bounds | |
1502 | * checking. | |
1503 | */ | |
1504 | size_total = par->vbe_ib.total_memory * 65536; | |
1505 | if (vram_total) | |
1506 | size_total = vram_total * 1024 * 1024; | |
1507 | if (size_total < size_vmode) | |
1508 | size_total = size_vmode; | |
1509 | ||
1510 | /* | |
1511 | * size_remap -- the amount of video memory we are going to | |
1512 | * use for vesafb. With modern cards it is no | |
1513 | * option to simply use size_total as th | |
1514 | * wastes plenty of kernel address space. | |
1515 | */ | |
1516 | if (vram_remap) | |
1517 | size_remap = vram_remap * 1024 * 1024; | |
1518 | if (size_remap < size_vmode) | |
1519 | size_remap = size_vmode; | |
1520 | if (size_remap > size_total) | |
1521 | size_remap = size_total; | |
1522 | ||
1523 | info->fix.smem_len = size_remap; | |
1524 | info->fix.smem_start = mode->phys_base_ptr; | |
1525 | ||
1526 | /* | |
1527 | * We have to set yres_virtual here because when setup_var() was | |
1528 | * called, smem_len wasn't defined yet. | |
1529 | */ | |
1530 | info->var.yres_virtual = info->fix.smem_len / | |
1531 | mode->bytes_per_scan_line; | |
1532 | ||
1533 | if (par->ypan && info->var.yres_virtual > info->var.yres) { | |
1534 | printk(KERN_INFO "uvesafb: scrolling: %s " | |
1535 | "using protected mode interface, " | |
1536 | "yres_virtual=%d\n", | |
1537 | (par->ypan > 1) ? "ywrap" : "ypan", | |
1538 | info->var.yres_virtual); | |
1539 | } else { | |
1540 | printk(KERN_INFO "uvesafb: scrolling: redraw\n"); | |
1541 | info->var.yres_virtual = info->var.yres; | |
1542 | par->ypan = 0; | |
1543 | } | |
1544 | ||
1545 | info->flags = FBINFO_FLAG_DEFAULT | | |
1546 | (par->ypan) ? FBINFO_HWACCEL_YPAN : 0; | |
1547 | ||
1548 | if (!par->ypan) | |
1549 | info->fbops->fb_pan_display = NULL; | |
1550 | } | |
1551 | ||
27b526a0 | 1552 | static void __devinit uvesafb_init_mtrr(struct fb_info *info) |
8bdb3a2d MJ |
1553 | { |
1554 | #ifdef CONFIG_MTRR | |
1555 | if (mtrr && !(info->fix.smem_start & (PAGE_SIZE - 1))) { | |
1556 | int temp_size = info->fix.smem_len; | |
1557 | unsigned int type = 0; | |
1558 | ||
1559 | switch (mtrr) { | |
1560 | case 1: | |
1561 | type = MTRR_TYPE_UNCACHABLE; | |
1562 | break; | |
1563 | case 2: | |
1564 | type = MTRR_TYPE_WRBACK; | |
1565 | break; | |
1566 | case 3: | |
1567 | type = MTRR_TYPE_WRCOMB; | |
1568 | break; | |
1569 | case 4: | |
1570 | type = MTRR_TYPE_WRTHROUGH; | |
1571 | break; | |
1572 | default: | |
1573 | type = 0; | |
1574 | break; | |
1575 | } | |
1576 | ||
1577 | if (type) { | |
1578 | int rc; | |
1579 | ||
1580 | /* Find the largest power-of-two */ | |
1581 | while (temp_size & (temp_size - 1)) | |
1582 | temp_size &= (temp_size - 1); | |
1583 | ||
1584 | /* Try and find a power of two to add */ | |
1585 | do { | |
1586 | rc = mtrr_add(info->fix.smem_start, | |
1587 | temp_size, type, 1); | |
1588 | temp_size >>= 1; | |
1589 | } while (temp_size >= PAGE_SIZE && rc == -EINVAL); | |
1590 | } | |
1591 | } | |
1592 | #endif /* CONFIG_MTRR */ | |
1593 | } | |
1594 | ||
1595 | ||
1596 | static ssize_t uvesafb_show_vbe_ver(struct device *dev, | |
1597 | struct device_attribute *attr, char *buf) | |
1598 | { | |
1599 | struct fb_info *info = platform_get_drvdata(to_platform_device(dev)); | |
1600 | struct uvesafb_par *par = info->par; | |
1601 | ||
1602 | return snprintf(buf, PAGE_SIZE, "%.4x\n", par->vbe_ib.vbe_version); | |
1603 | } | |
1604 | ||
1605 | static DEVICE_ATTR(vbe_version, S_IRUGO, uvesafb_show_vbe_ver, NULL); | |
1606 | ||
1607 | static ssize_t uvesafb_show_vbe_modes(struct device *dev, | |
1608 | struct device_attribute *attr, char *buf) | |
1609 | { | |
1610 | struct fb_info *info = platform_get_drvdata(to_platform_device(dev)); | |
1611 | struct uvesafb_par *par = info->par; | |
1612 | int ret = 0, i; | |
1613 | ||
1614 | for (i = 0; i < par->vbe_modes_cnt && ret < PAGE_SIZE; i++) { | |
1615 | ret += snprintf(buf + ret, PAGE_SIZE - ret, | |
1616 | "%dx%d-%d, 0x%.4x\n", | |
1617 | par->vbe_modes[i].x_res, par->vbe_modes[i].y_res, | |
1618 | par->vbe_modes[i].depth, par->vbe_modes[i].mode_id); | |
1619 | } | |
1620 | ||
1621 | return ret; | |
1622 | } | |
1623 | ||
1624 | static DEVICE_ATTR(vbe_modes, S_IRUGO, uvesafb_show_vbe_modes, NULL); | |
1625 | ||
1626 | static ssize_t uvesafb_show_vendor(struct device *dev, | |
1627 | struct device_attribute *attr, char *buf) | |
1628 | { | |
1629 | struct fb_info *info = platform_get_drvdata(to_platform_device(dev)); | |
1630 | struct uvesafb_par *par = info->par; | |
1631 | ||
1632 | if (par->vbe_ib.oem_vendor_name_ptr) | |
1633 | return snprintf(buf, PAGE_SIZE, "%s\n", (char *) | |
1634 | (&par->vbe_ib) + par->vbe_ib.oem_vendor_name_ptr); | |
1635 | else | |
1636 | return 0; | |
1637 | } | |
1638 | ||
1639 | static DEVICE_ATTR(oem_vendor, S_IRUGO, uvesafb_show_vendor, NULL); | |
1640 | ||
1641 | static ssize_t uvesafb_show_product_name(struct device *dev, | |
1642 | struct device_attribute *attr, char *buf) | |
1643 | { | |
1644 | struct fb_info *info = platform_get_drvdata(to_platform_device(dev)); | |
1645 | struct uvesafb_par *par = info->par; | |
1646 | ||
1647 | if (par->vbe_ib.oem_product_name_ptr) | |
1648 | return snprintf(buf, PAGE_SIZE, "%s\n", (char *) | |
1649 | (&par->vbe_ib) + par->vbe_ib.oem_product_name_ptr); | |
1650 | else | |
1651 | return 0; | |
1652 | } | |
1653 | ||
1654 | static DEVICE_ATTR(oem_product_name, S_IRUGO, uvesafb_show_product_name, NULL); | |
1655 | ||
1656 | static ssize_t uvesafb_show_product_rev(struct device *dev, | |
1657 | struct device_attribute *attr, char *buf) | |
1658 | { | |
1659 | struct fb_info *info = platform_get_drvdata(to_platform_device(dev)); | |
1660 | struct uvesafb_par *par = info->par; | |
1661 | ||
1662 | if (par->vbe_ib.oem_product_rev_ptr) | |
1663 | return snprintf(buf, PAGE_SIZE, "%s\n", (char *) | |
1664 | (&par->vbe_ib) + par->vbe_ib.oem_product_rev_ptr); | |
1665 | else | |
1666 | return 0; | |
1667 | } | |
1668 | ||
1669 | static DEVICE_ATTR(oem_product_rev, S_IRUGO, uvesafb_show_product_rev, NULL); | |
1670 | ||
1671 | static ssize_t uvesafb_show_oem_string(struct device *dev, | |
1672 | struct device_attribute *attr, char *buf) | |
1673 | { | |
1674 | struct fb_info *info = platform_get_drvdata(to_platform_device(dev)); | |
1675 | struct uvesafb_par *par = info->par; | |
1676 | ||
1677 | if (par->vbe_ib.oem_string_ptr) | |
1678 | return snprintf(buf, PAGE_SIZE, "%s\n", | |
1679 | (char *)(&par->vbe_ib) + par->vbe_ib.oem_string_ptr); | |
1680 | else | |
1681 | return 0; | |
1682 | } | |
1683 | ||
1684 | static DEVICE_ATTR(oem_string, S_IRUGO, uvesafb_show_oem_string, NULL); | |
1685 | ||
1686 | static ssize_t uvesafb_show_nocrtc(struct device *dev, | |
1687 | struct device_attribute *attr, char *buf) | |
1688 | { | |
1689 | struct fb_info *info = platform_get_drvdata(to_platform_device(dev)); | |
1690 | struct uvesafb_par *par = info->par; | |
1691 | ||
1692 | return snprintf(buf, PAGE_SIZE, "%d\n", par->nocrtc); | |
1693 | } | |
1694 | ||
1695 | static ssize_t uvesafb_store_nocrtc(struct device *dev, | |
1696 | struct device_attribute *attr, const char *buf, size_t count) | |
1697 | { | |
1698 | struct fb_info *info = platform_get_drvdata(to_platform_device(dev)); | |
1699 | struct uvesafb_par *par = info->par; | |
1700 | ||
1701 | if (count > 0) { | |
1702 | if (buf[0] == '0') | |
1703 | par->nocrtc = 0; | |
1704 | else | |
1705 | par->nocrtc = 1; | |
1706 | } | |
1707 | return count; | |
1708 | } | |
1709 | ||
1710 | static DEVICE_ATTR(nocrtc, S_IRUGO | S_IWUSR, uvesafb_show_nocrtc, | |
1711 | uvesafb_store_nocrtc); | |
1712 | ||
1713 | static struct attribute *uvesafb_dev_attrs[] = { | |
1714 | &dev_attr_vbe_version.attr, | |
1715 | &dev_attr_vbe_modes.attr, | |
1716 | &dev_attr_oem_vendor.attr, | |
1717 | &dev_attr_oem_product_name.attr, | |
1718 | &dev_attr_oem_product_rev.attr, | |
1719 | &dev_attr_oem_string.attr, | |
1720 | &dev_attr_nocrtc.attr, | |
1721 | NULL, | |
1722 | }; | |
1723 | ||
1724 | static struct attribute_group uvesafb_dev_attgrp = { | |
1725 | .name = NULL, | |
1726 | .attrs = uvesafb_dev_attrs, | |
1727 | }; | |
1728 | ||
1729 | static int __devinit uvesafb_probe(struct platform_device *dev) | |
1730 | { | |
1731 | struct fb_info *info; | |
1732 | struct vbe_mode_ib *mode = NULL; | |
1733 | struct uvesafb_par *par; | |
1734 | int err = 0, i; | |
1735 | ||
1736 | info = framebuffer_alloc(sizeof(*par) + sizeof(u32) * 256, &dev->dev); | |
1737 | if (!info) | |
1738 | return -ENOMEM; | |
1739 | ||
1740 | par = info->par; | |
1741 | ||
1742 | err = uvesafb_vbe_init(info); | |
1743 | if (err) { | |
1744 | printk(KERN_ERR "uvesafb: vbe_init() failed with %d\n", err); | |
1745 | goto out; | |
1746 | } | |
1747 | ||
1748 | info->fbops = &uvesafb_ops; | |
1749 | ||
1750 | i = uvesafb_vbe_init_mode(info); | |
1751 | if (i < 0) { | |
1752 | err = -EINVAL; | |
1753 | goto out; | |
1754 | } else { | |
1755 | mode = &par->vbe_modes[i]; | |
1756 | } | |
1757 | ||
1758 | if (fb_alloc_cmap(&info->cmap, 256, 0) < 0) { | |
1759 | err = -ENXIO; | |
1760 | goto out; | |
1761 | } | |
1762 | ||
1763 | uvesafb_init_info(info, mode); | |
1764 | ||
1765 | if (!request_mem_region(info->fix.smem_start, info->fix.smem_len, | |
1766 | "uvesafb")) { | |
1767 | printk(KERN_ERR "uvesafb: cannot reserve video memory at " | |
1768 | "0x%lx\n", info->fix.smem_start); | |
1769 | err = -EIO; | |
1770 | goto out_mode; | |
1771 | } | |
1772 | ||
1773 | info->screen_base = ioremap(info->fix.smem_start, info->fix.smem_len); | |
1774 | ||
1775 | if (!info->screen_base) { | |
1776 | printk(KERN_ERR | |
1777 | "uvesafb: abort, cannot ioremap 0x%x bytes of video " | |
1778 | "memory at 0x%lx\n", | |
1779 | info->fix.smem_len, info->fix.smem_start); | |
1780 | err = -EIO; | |
1781 | goto out_mem; | |
1782 | } | |
1783 | ||
1784 | if (!request_region(0x3c0, 32, "uvesafb")) { | |
1785 | printk(KERN_ERR "uvesafb: request region 0x3c0-0x3e0 failed\n"); | |
1786 | err = -EIO; | |
1787 | goto out_unmap; | |
1788 | } | |
1789 | ||
1790 | uvesafb_init_mtrr(info); | |
1791 | platform_set_drvdata(dev, info); | |
1792 | ||
1793 | if (register_framebuffer(info) < 0) { | |
1794 | printk(KERN_ERR | |
1795 | "uvesafb: failed to register framebuffer device\n"); | |
1796 | err = -EINVAL; | |
1797 | goto out_reg; | |
1798 | } | |
1799 | ||
1800 | printk(KERN_INFO "uvesafb: framebuffer at 0x%lx, mapped to 0x%p, " | |
1801 | "using %dk, total %dk\n", info->fix.smem_start, | |
1802 | info->screen_base, info->fix.smem_len/1024, | |
1803 | par->vbe_ib.total_memory * 64); | |
1804 | printk(KERN_INFO "fb%d: %s frame buffer device\n", info->node, | |
1805 | info->fix.id); | |
1806 | ||
1807 | err = sysfs_create_group(&dev->dev.kobj, &uvesafb_dev_attgrp); | |
1808 | if (err != 0) | |
1809 | printk(KERN_WARNING "fb%d: failed to register attributes\n", | |
1810 | info->node); | |
1811 | ||
1812 | return 0; | |
1813 | ||
1814 | out_reg: | |
1815 | release_region(0x3c0, 32); | |
1816 | out_unmap: | |
1817 | iounmap(info->screen_base); | |
1818 | out_mem: | |
1819 | release_mem_region(info->fix.smem_start, info->fix.smem_len); | |
1820 | out_mode: | |
1821 | if (!list_empty(&info->modelist)) | |
1822 | fb_destroy_modelist(&info->modelist); | |
1823 | fb_destroy_modedb(info->monspecs.modedb); | |
1824 | fb_dealloc_cmap(&info->cmap); | |
1825 | out: | |
1826 | if (par->vbe_modes) | |
1827 | kfree(par->vbe_modes); | |
1828 | ||
1829 | framebuffer_release(info); | |
1830 | return err; | |
1831 | } | |
1832 | ||
1833 | static int uvesafb_remove(struct platform_device *dev) | |
1834 | { | |
1835 | struct fb_info *info = platform_get_drvdata(dev); | |
1836 | ||
1837 | if (info) { | |
1838 | struct uvesafb_par *par = info->par; | |
1839 | ||
1840 | sysfs_remove_group(&dev->dev.kobj, &uvesafb_dev_attgrp); | |
1841 | unregister_framebuffer(info); | |
1842 | release_region(0x3c0, 32); | |
1843 | iounmap(info->screen_base); | |
1844 | release_mem_region(info->fix.smem_start, info->fix.smem_len); | |
1845 | fb_destroy_modedb(info->monspecs.modedb); | |
1846 | fb_dealloc_cmap(&info->cmap); | |
1847 | ||
1848 | if (par) { | |
1849 | if (par->vbe_modes) | |
1850 | kfree(par->vbe_modes); | |
1851 | if (par->vbe_state_orig) | |
1852 | kfree(par->vbe_state_orig); | |
1853 | if (par->vbe_state_saved) | |
1854 | kfree(par->vbe_state_saved); | |
1855 | } | |
1856 | ||
1857 | framebuffer_release(info); | |
1858 | } | |
1859 | return 0; | |
1860 | } | |
1861 | ||
1862 | static struct platform_driver uvesafb_driver = { | |
1863 | .probe = uvesafb_probe, | |
1864 | .remove = uvesafb_remove, | |
1865 | .driver = { | |
1866 | .name = "uvesafb", | |
1867 | }, | |
1868 | }; | |
1869 | ||
1870 | static struct platform_device *uvesafb_device; | |
1871 | ||
1872 | #ifndef MODULE | |
1873 | static int __devinit uvesafb_setup(char *options) | |
1874 | { | |
1875 | char *this_opt; | |
1876 | ||
1877 | if (!options || !*options) | |
1878 | return 0; | |
1879 | ||
1880 | while ((this_opt = strsep(&options, ",")) != NULL) { | |
1881 | if (!*this_opt) continue; | |
1882 | ||
1883 | if (!strcmp(this_opt, "redraw")) | |
1884 | ypan = 0; | |
1885 | else if (!strcmp(this_opt, "ypan")) | |
1886 | ypan = 1; | |
1887 | else if (!strcmp(this_opt, "ywrap")) | |
1888 | ypan = 2; | |
1889 | else if (!strcmp(this_opt, "vgapal")) | |
1890 | pmi_setpal = 0; | |
1891 | else if (!strcmp(this_opt, "pmipal")) | |
1892 | pmi_setpal = 1; | |
1893 | else if (!strncmp(this_opt, "mtrr:", 5)) | |
1894 | mtrr = simple_strtoul(this_opt+5, NULL, 0); | |
1895 | else if (!strcmp(this_opt, "nomtrr")) | |
1896 | mtrr = 0; | |
1897 | else if (!strcmp(this_opt, "nocrtc")) | |
1898 | nocrtc = 1; | |
1899 | else if (!strcmp(this_opt, "noedid")) | |
1900 | noedid = 1; | |
1901 | else if (!strcmp(this_opt, "noblank")) | |
1902 | blank = 0; | |
1903 | else if (!strncmp(this_opt, "vtotal:", 7)) | |
1904 | vram_total = simple_strtoul(this_opt + 7, NULL, 0); | |
1905 | else if (!strncmp(this_opt, "vremap:", 7)) | |
1906 | vram_remap = simple_strtoul(this_opt + 7, NULL, 0); | |
1907 | else if (!strncmp(this_opt, "maxhf:", 6)) | |
1908 | maxhf = simple_strtoul(this_opt + 6, NULL, 0); | |
1909 | else if (!strncmp(this_opt, "maxvf:", 6)) | |
1910 | maxvf = simple_strtoul(this_opt + 6, NULL, 0); | |
1911 | else if (!strncmp(this_opt, "maxclk:", 7)) | |
1912 | maxclk = simple_strtoul(this_opt + 7, NULL, 0); | |
1913 | else if (!strncmp(this_opt, "vbemode:", 8)) | |
1914 | vbemode = simple_strtoul(this_opt + 8, NULL, 0); | |
1915 | else if (this_opt[0] >= '0' && this_opt[0] <= '9') { | |
1916 | mode_option = this_opt; | |
1917 | } else { | |
1918 | printk(KERN_WARNING | |
1919 | "uvesafb: unrecognized option %s\n", this_opt); | |
1920 | } | |
1921 | } | |
1922 | ||
1923 | return 0; | |
1924 | } | |
1925 | #endif /* !MODULE */ | |
1926 | ||
1927 | static ssize_t show_v86d(struct device_driver *dev, char *buf) | |
1928 | { | |
1929 | return snprintf(buf, PAGE_SIZE, "%s\n", v86d_path); | |
1930 | } | |
1931 | ||
1932 | static ssize_t store_v86d(struct device_driver *dev, const char *buf, | |
1933 | size_t count) | |
1934 | { | |
1935 | strncpy(v86d_path, buf, PATH_MAX); | |
1936 | return count; | |
1937 | } | |
1938 | ||
1939 | static DRIVER_ATTR(v86d, S_IRUGO | S_IWUSR, show_v86d, store_v86d); | |
1940 | ||
1941 | static int __devinit uvesafb_init(void) | |
1942 | { | |
1943 | int err; | |
1944 | ||
1945 | #ifndef MODULE | |
1946 | char *option = NULL; | |
1947 | ||
1948 | if (fb_get_options("uvesafb", &option)) | |
1949 | return -ENODEV; | |
1950 | uvesafb_setup(option); | |
1951 | #endif | |
1952 | err = cn_add_callback(&uvesafb_cn_id, "uvesafb", uvesafb_cn_callback); | |
1953 | if (err) | |
1954 | return err; | |
1955 | ||
1956 | err = platform_driver_register(&uvesafb_driver); | |
1957 | ||
1958 | if (!err) { | |
1959 | uvesafb_device = platform_device_alloc("uvesafb", 0); | |
1960 | if (uvesafb_device) | |
1961 | err = platform_device_add(uvesafb_device); | |
1962 | else | |
1963 | err = -ENOMEM; | |
1964 | ||
1965 | if (err) { | |
1966 | platform_device_put(uvesafb_device); | |
1967 | platform_driver_unregister(&uvesafb_driver); | |
1968 | cn_del_callback(&uvesafb_cn_id); | |
1969 | return err; | |
1970 | } | |
1971 | ||
1972 | err = driver_create_file(&uvesafb_driver.driver, | |
1973 | &driver_attr_v86d); | |
1974 | if (err) { | |
1975 | printk(KERN_WARNING "uvesafb: failed to register " | |
1976 | "attributes\n"); | |
1977 | err = 0; | |
1978 | } | |
1979 | } | |
1980 | return err; | |
1981 | } | |
1982 | ||
1983 | module_init(uvesafb_init); | |
1984 | ||
1985 | static void __devexit uvesafb_exit(void) | |
1986 | { | |
1987 | struct uvesafb_ktask *task; | |
1988 | ||
1989 | if (v86d_started) { | |
1990 | task = uvesafb_prep(); | |
1991 | if (task) { | |
1992 | task->t.flags = TF_EXIT; | |
1993 | uvesafb_exec(task); | |
1994 | uvesafb_free(task); | |
1995 | } | |
1996 | } | |
1997 | ||
1998 | cn_del_callback(&uvesafb_cn_id); | |
1999 | driver_remove_file(&uvesafb_driver.driver, &driver_attr_v86d); | |
2000 | platform_device_unregister(uvesafb_device); | |
2001 | platform_driver_unregister(&uvesafb_driver); | |
2002 | } | |
2003 | ||
2004 | module_exit(uvesafb_exit); | |
2005 | ||
5eb03a4a | 2006 | static int param_get_scroll(char *buffer, struct kernel_param *kp) |
8bdb3a2d MJ |
2007 | { |
2008 | return 0; | |
2009 | } | |
2010 | ||
5eb03a4a | 2011 | static int param_set_scroll(const char *val, struct kernel_param *kp) |
8bdb3a2d MJ |
2012 | { |
2013 | ypan = 0; | |
2014 | ||
2015 | if (!strcmp(val, "redraw")) | |
2016 | ypan = 0; | |
2017 | else if (!strcmp(val, "ypan")) | |
2018 | ypan = 1; | |
2019 | else if (!strcmp(val, "ywrap")) | |
2020 | ypan = 2; | |
2021 | ||
2022 | return 0; | |
2023 | } | |
2024 | ||
5eb03a4a | 2025 | #define param_check_scroll(name, p) __param_check(name, p, void) |
8bdb3a2d MJ |
2026 | |
2027 | module_param_named(scroll, ypan, scroll, 0); | |
2028 | MODULE_PARM_DESC(scroll, | |
5eb03a4a | 2029 | "Scrolling mode, set to 'redraw', 'ypan', or 'ywrap'"); |
8bdb3a2d MJ |
2030 | module_param_named(vgapal, pmi_setpal, invbool, 0); |
2031 | MODULE_PARM_DESC(vgapal, "Set palette using VGA registers"); | |
2032 | module_param_named(pmipal, pmi_setpal, bool, 0); | |
2033 | MODULE_PARM_DESC(pmipal, "Set palette using PMI calls"); | |
2034 | module_param(mtrr, uint, 0); | |
2035 | MODULE_PARM_DESC(mtrr, | |
2036 | "Memory Type Range Registers setting. Use 0 to disable."); | |
2037 | module_param(blank, bool, 0); | |
2038 | MODULE_PARM_DESC(blank, "Enable hardware blanking"); | |
2039 | module_param(nocrtc, bool, 0); | |
2040 | MODULE_PARM_DESC(nocrtc, "Ignore CRTC timings when setting modes"); | |
2041 | module_param(noedid, bool, 0); | |
2042 | MODULE_PARM_DESC(noedid, | |
2043 | "Ignore EDID-provided monitor limits when setting modes"); | |
2044 | module_param(vram_remap, uint, 0); | |
2045 | MODULE_PARM_DESC(vram_remap, "Set amount of video memory to be used [MiB]"); | |
2046 | module_param(vram_total, uint, 0); | |
2047 | MODULE_PARM_DESC(vram_total, "Set total amount of video memoery [MiB]"); | |
2048 | module_param(maxclk, ushort, 0); | |
2049 | MODULE_PARM_DESC(maxclk, "Maximum pixelclock [MHz], overrides EDID data"); | |
2050 | module_param(maxhf, ushort, 0); | |
2051 | MODULE_PARM_DESC(maxhf, | |
2052 | "Maximum horizontal frequency [kHz], overrides EDID data"); | |
2053 | module_param(maxvf, ushort, 0); | |
2054 | MODULE_PARM_DESC(maxvf, | |
2055 | "Maximum vertical frequency [Hz], overrides EDID data"); | |
2056 | module_param_named(mode, mode_option, charp, 0); | |
2057 | MODULE_PARM_DESC(mode, | |
2058 | "Specify initial video mode as \"<xres>x<yres>[-<bpp>][@<refresh>]\""); | |
2059 | module_param(vbemode, ushort, 0); | |
2060 | MODULE_PARM_DESC(vbemode, | |
2061 | "VBE mode number to set, overrides the 'mode' option"); | |
2062 | module_param_string(v86d, v86d_path, PATH_MAX, 0660); | |
2063 | MODULE_PARM_DESC(v86d, "Path to the v86d userspace helper."); | |
2064 | ||
2065 | MODULE_LICENSE("GPL"); | |
2066 | MODULE_AUTHOR("Michal Januszewski <spock@gentoo.org>"); | |
2067 | MODULE_DESCRIPTION("Framebuffer driver for VBE2.0+ compliant graphics boards"); | |
2068 |