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tg3: Add 5720 NVRAM decoding
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / video / efifb.c
blob70477c2e4b619cd6a2ca5562771e15243cd647a3
1 /*
2 * Framebuffer driver for EFI/UEFI based system
3 *
4 * (c) 2006 Edgar Hucek <gimli@dark-green.com>
5 * Original efi driver written by Gerd Knorr <kraxel@goldbach.in-berlin.de>
6 *
7 */
8
9 #include <linux/module.h>
10 #include <linux/kernel.h>
11 #include <linux/errno.h>
12 #include <linux/fb.h>
13 #include <linux/platform_device.h>
14 #include <linux/screen_info.h>
15 #include <linux/dmi.h>
16 #include <linux/pci.h>
17 #include <video/vga.h>
18
19 static struct fb_var_screeninfo efifb_defined __devinitdata = {
20 .activate = FB_ACTIVATE_NOW,
21 .height = -1,
22 .width = -1,
23 .right_margin = 32,
24 .upper_margin = 16,
25 .lower_margin = 4,
26 .vsync_len = 4,
27 .vmode = FB_VMODE_NONINTERLACED,
28 };
29
30 static struct fb_fix_screeninfo efifb_fix __devinitdata = {
31 .id = "EFI VGA",
32 .type = FB_TYPE_PACKED_PIXELS,
33 .accel = FB_ACCEL_NONE,
34 .visual = FB_VISUAL_TRUECOLOR,
35 };
36
37 enum {
38 M_I17, /* 17-Inch iMac */
39 M_I20, /* 20-Inch iMac */
40 M_I20_SR, /* 20-Inch iMac (Santa Rosa) */
41 M_I24, /* 24-Inch iMac */
42 M_I24_8_1, /* 24-Inch iMac, 8,1th gen */
43 M_I24_10_1, /* 24-Inch iMac, 10,1th gen */
44 M_I27_11_1, /* 27-Inch iMac, 11,1th gen */
45 M_MINI, /* Mac Mini */
46 M_MINI_3_1, /* Mac Mini, 3,1th gen */
47 M_MINI_4_1, /* Mac Mini, 4,1th gen */
48 M_MB, /* MacBook */
49 M_MB_2, /* MacBook, 2nd rev. */
50 M_MB_3, /* MacBook, 3rd rev. */
51 M_MB_5_1, /* MacBook, 5th rev. */
52 M_MB_6_1, /* MacBook, 6th rev. */
53 M_MB_7_1, /* MacBook, 7th rev. */
54 M_MB_SR, /* MacBook, 2nd gen, (Santa Rosa) */
55 M_MBA, /* MacBook Air */
56 M_MBP, /* MacBook Pro */
57 M_MBP_2, /* MacBook Pro 2nd gen */
58 M_MBP_2_2, /* MacBook Pro 2,2nd gen */
59 M_MBP_SR, /* MacBook Pro (Santa Rosa) */
60 M_MBP_4, /* MacBook Pro, 4th gen */
61 M_MBP_5_1, /* MacBook Pro, 5,1th gen */
62 M_MBP_5_2, /* MacBook Pro, 5,2th gen */
63 M_MBP_5_3, /* MacBook Pro, 5,3rd gen */
64 M_MBP_6_1, /* MacBook Pro, 6,1th gen */
65 M_MBP_6_2, /* MacBook Pro, 6,2th gen */
66 M_MBP_7_1, /* MacBook Pro, 7,1th gen */
67 M_UNKNOWN /* placeholder */
68 };
69
70 static struct efifb_dmi_info {
71 char *optname;
72 unsigned long base;
73 int stride;
74 int width;
75 int height;
76 } dmi_list[] __initdata = {
77 [M_I17] = { "i17", 0x80010000, 1472 * 4, 1440, 900 },
78 [M_I20] = { "i20", 0x80010000, 1728 * 4, 1680, 1050 }, /* guess */
79 [M_I20_SR] = { "imac7", 0x40010000, 1728 * 4, 1680, 1050 },
80 [M_I24] = { "i24", 0x80010000, 2048 * 4, 1920, 1200 }, /* guess */
81 [M_I24_8_1] = { "imac8", 0xc0060000, 2048 * 4, 1920, 1200 },
82 [M_I24_10_1] = { "imac10", 0xc0010000, 2048 * 4, 1920, 1080 },
83 [M_I27_11_1] = { "imac11", 0xc0010000, 2560 * 4, 2560, 1440 },
84 [M_MINI]= { "mini", 0x80000000, 2048 * 4, 1024, 768 },
85 [M_MINI_3_1] = { "mini31", 0x40010000, 1024 * 4, 1024, 768 },
86 [M_MINI_4_1] = { "mini41", 0xc0010000, 2048 * 4, 1920, 1200 },
87 [M_MB] = { "macbook", 0x80000000, 2048 * 4, 1280, 800 },
88 [M_MB_5_1] = { "macbook51", 0x80010000, 2048 * 4, 1280, 800 },
89 [M_MB_6_1] = { "macbook61", 0x80010000, 2048 * 4, 1280, 800 },
90 [M_MB_7_1] = { "macbook71", 0x80010000, 2048 * 4, 1280, 800 },
91 [M_MBA] = { "mba", 0x80000000, 2048 * 4, 1280, 800 },
92 [M_MBP] = { "mbp", 0x80010000, 1472 * 4, 1440, 900 },
93 [M_MBP_2] = { "mbp2", 0, 0, 0, 0 }, /* placeholder */
94 [M_MBP_2_2] = { "mbp22", 0x80010000, 1472 * 4, 1440, 900 },
95 [M_MBP_SR] = { "mbp3", 0x80030000, 2048 * 4, 1440, 900 },
96 [M_MBP_4] = { "mbp4", 0xc0060000, 2048 * 4, 1920, 1200 },
97 [M_MBP_5_1] = { "mbp51", 0xc0010000, 2048 * 4, 1440, 900 },
98 [M_MBP_5_2] = { "mbp52", 0xc0010000, 2048 * 4, 1920, 1200 },
99 [M_MBP_5_3] = { "mbp53", 0xd0010000, 2048 * 4, 1440, 900 },
100 [M_MBP_6_1] = { "mbp61", 0x90030000, 2048 * 4, 1920, 1200 },
101 [M_MBP_6_2] = { "mbp62", 0x90030000, 2048 * 4, 1680, 1050 },
102 [M_MBP_7_1] = { "mbp71", 0xc0010000, 2048 * 4, 1280, 800 },
103 [M_UNKNOWN] = { NULL, 0, 0, 0, 0 }
104 };
105
106 static int set_system(const struct dmi_system_id *id);
107
108 #define EFIFB_DMI_SYSTEM_ID(vendor, name, enumid) \
109 { set_system, name, { \
110 DMI_MATCH(DMI_BIOS_VENDOR, vendor), \
111 DMI_MATCH(DMI_PRODUCT_NAME, name) }, \
112 &dmi_list[enumid] }
113
114 static const struct dmi_system_id dmi_system_table[] __initconst = {
115 EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "iMac4,1", M_I17),
116 /* At least one of these two will be right; maybe both? */
117 EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "iMac5,1", M_I20),
118 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "iMac5,1", M_I20),
119 /* At least one of these two will be right; maybe both? */
120 EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "iMac6,1", M_I24),
121 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "iMac6,1", M_I24),
122 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "iMac7,1", M_I20_SR),
123 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "iMac8,1", M_I24_8_1),
124 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "iMac10,1", M_I24_10_1),
125 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "iMac11,1", M_I27_11_1),
126 EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "Macmini1,1", M_MINI),
127 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "Macmini3,1", M_MINI_3_1),
128 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "Macmini4,1", M_MINI_4_1),
129 EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBook1,1", M_MB),
130 /* At least one of these two will be right; maybe both? */
131 EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBook2,1", M_MB),
132 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBook2,1", M_MB),
133 /* At least one of these two will be right; maybe both? */
134 EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBook3,1", M_MB),
135 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBook3,1", M_MB),
136 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBook4,1", M_MB),
137 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBook5,1", M_MB_5_1),
138 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBook6,1", M_MB_6_1),
139 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBook7,1", M_MB_7_1),
140 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookAir1,1", M_MBA),
141 EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBookPro1,1", M_MBP),
142 EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBookPro2,1", M_MBP_2),
143 EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBookPro2,2", M_MBP_2_2),
144 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro2,1", M_MBP_2),
145 EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBookPro3,1", M_MBP_SR),
146 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro3,1", M_MBP_SR),
147 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro4,1", M_MBP_4),
148 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro5,1", M_MBP_5_1),
149 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro5,2", M_MBP_5_2),
150 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro5,3", M_MBP_5_3),
151 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro6,1", M_MBP_6_1),
152 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro6,2", M_MBP_6_2),
153 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro7,1", M_MBP_7_1),
154 {},
155 };
156
157 static int set_system(const struct dmi_system_id *id)
158 {
159 struct efifb_dmi_info *info = id->driver_data;
160 if (info->base == 0)
161 return 0;
162
163 printk(KERN_INFO "efifb: dmi detected %s - framebuffer at %p "
164 "(%dx%d, stride %d)\n", id->ident,
165 (void *)info->base, info->width, info->height,
166 info->stride);
167
168 /* Trust the bootloader over the DMI tables */
169 if (screen_info.lfb_base == 0) {
170 #if defined(CONFIG_PCI)
171 struct pci_dev *dev = NULL;
172 int found_bar = 0;
173 #endif
174 screen_info.lfb_base = info->base;
175
176 #if defined(CONFIG_PCI)
177 /* make sure that the address in the table is actually on a
178 * VGA device's PCI BAR */
179
180 for_each_pci_dev(dev) {
181 int i;
182 if ((dev->class >> 8) != PCI_CLASS_DISPLAY_VGA)
183 continue;
184 for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
185 resource_size_t start, end;
186
187 start = pci_resource_start(dev, i);
188 if (start == 0)
189 break;
190 end = pci_resource_end(dev, i);
191 if (screen_info.lfb_base >= start &&
192 screen_info.lfb_base < end) {
193 found_bar = 1;
194 }
195 }
196 }
197 if (!found_bar)
198 screen_info.lfb_base = 0;
199 #endif
200 }
201 if (screen_info.lfb_base) {
202 if (screen_info.lfb_linelength == 0)
203 screen_info.lfb_linelength = info->stride;
204 if (screen_info.lfb_width == 0)
205 screen_info.lfb_width = info->width;
206 if (screen_info.lfb_height == 0)
207 screen_info.lfb_height = info->height;
208 if (screen_info.orig_video_isVGA == 0)
209 screen_info.orig_video_isVGA = VIDEO_TYPE_EFI;
210 } else {
211 screen_info.lfb_linelength = 0;
212 screen_info.lfb_width = 0;
213 screen_info.lfb_height = 0;
214 screen_info.orig_video_isVGA = 0;
215 return 0;
216 }
217 return 1;
218 }
219
220 static int efifb_setcolreg(unsigned regno, unsigned red, unsigned green,
221 unsigned blue, unsigned transp,
222 struct fb_info *info)
223 {
224 /*
225 * Set a single color register. The values supplied are
226 * already rounded down to the hardware's capabilities
227 * (according to the entries in the `var' structure). Return
228 * != 0 for invalid regno.
229 */
230
231 if (regno >= info->cmap.len)
232 return 1;
233
234 if (regno < 16) {
235 red >>= 8;
236 green >>= 8;
237 blue >>= 8;
238 ((u32 *)(info->pseudo_palette))[regno] =
239 (red << info->var.red.offset) |
240 (green << info->var.green.offset) |
241 (blue << info->var.blue.offset);
242 }
243 return 0;
244 }
245
246 static void efifb_destroy(struct fb_info *info)
247 {
248 if (info->screen_base)
249 iounmap(info->screen_base);
250 release_mem_region(info->apertures->ranges[0].base, info->apertures->ranges[0].size);
251 framebuffer_release(info);
252 }
253
254 static struct fb_ops efifb_ops = {
255 .owner = THIS_MODULE,
256 .fb_destroy = efifb_destroy,
257 .fb_setcolreg = efifb_setcolreg,
258 .fb_fillrect = cfb_fillrect,
259 .fb_copyarea = cfb_copyarea,
260 .fb_imageblit = cfb_imageblit,
261 };
262
263 static int __init efifb_setup(char *options)
264 {
265 char *this_opt;
266 int i;
267
268 if (!options || !*options)
269 return 0;
270
271 while ((this_opt = strsep(&options, ",")) != NULL) {
272 if (!*this_opt) continue;
273
274 for (i = 0; i < M_UNKNOWN; i++) {
275 if (!strcmp(this_opt, dmi_list[i].optname) &&
276 dmi_list[i].base != 0) {
277 screen_info.lfb_base = dmi_list[i].base;
278 screen_info.lfb_linelength = dmi_list[i].stride;
279 screen_info.lfb_width = dmi_list[i].width;
280 screen_info.lfb_height = dmi_list[i].height;
281 }
282 }
283 if (!strncmp(this_opt, "base:", 5))
284 screen_info.lfb_base = simple_strtoul(this_opt+5, NULL, 0);
285 else if (!strncmp(this_opt, "stride:", 7))
286 screen_info.lfb_linelength = simple_strtoul(this_opt+7, NULL, 0) * 4;
287 else if (!strncmp(this_opt, "height:", 7))
288 screen_info.lfb_height = simple_strtoul(this_opt+7, NULL, 0);
289 else if (!strncmp(this_opt, "width:", 6))
290 screen_info.lfb_width = simple_strtoul(this_opt+6, NULL, 0);
291 }
292 return 0;
293 }
294
295 static int __devinit efifb_probe(struct platform_device *dev)
296 {
297 struct fb_info *info;
298 int err;
299 unsigned int size_vmode;
300 unsigned int size_remap;
301 unsigned int size_total;
302 int request_succeeded = 0;
303
304 if (!screen_info.lfb_depth)
305 screen_info.lfb_depth = 32;
306 if (!screen_info.pages)
307 screen_info.pages = 1;
308 if (!screen_info.lfb_base) {
309 printk(KERN_DEBUG "efifb: invalid framebuffer address\n");
310 return -ENODEV;
311 }
312 printk(KERN_INFO "efifb: probing for efifb\n");
313
314 /* just assume they're all unset if any are */
315 if (!screen_info.blue_size) {
316 screen_info.blue_size = 8;
317 screen_info.blue_pos = 0;
318 screen_info.green_size = 8;
319 screen_info.green_pos = 8;
320 screen_info.red_size = 8;
321 screen_info.red_pos = 16;
322 screen_info.rsvd_size = 8;
323 screen_info.rsvd_pos = 24;
324 }
325
326 efifb_fix.smem_start = screen_info.lfb_base;
327 efifb_defined.bits_per_pixel = screen_info.lfb_depth;
328 efifb_defined.xres = screen_info.lfb_width;
329 efifb_defined.yres = screen_info.lfb_height;
330 efifb_fix.line_length = screen_info.lfb_linelength;
331
332 /* size_vmode -- that is the amount of memory needed for the
333 * used video mode, i.e. the minimum amount of
334 * memory we need. */
335 size_vmode = efifb_defined.yres * efifb_fix.line_length;
336
337 /* size_total -- all video memory we have. Used for
338 * entries, ressource allocation and bounds
339 * checking. */
340 size_total = screen_info.lfb_size;
341 if (size_total < size_vmode)
342 size_total = size_vmode;
343
344 /* size_remap -- the amount of video memory we are going to
345 * use for efifb. With modern cards it is no
346 * option to simply use size_total as that
347 * wastes plenty of kernel address space. */
348 size_remap = size_vmode * 2;
349 if (size_remap > size_total)
350 size_remap = size_total;
351 if (size_remap % PAGE_SIZE)
352 size_remap += PAGE_SIZE - (size_remap % PAGE_SIZE);
353 efifb_fix.smem_len = size_remap;
354
355 if (request_mem_region(efifb_fix.smem_start, size_remap, "efifb")) {
356 request_succeeded = 1;
357 } else {
358 /* We cannot make this fatal. Sometimes this comes from magic
359 spaces our resource handlers simply don't know about */
360 printk(KERN_WARNING
361 "efifb: cannot reserve video memory at 0x%lx\n",
362 efifb_fix.smem_start);
363 }
364
365 info = framebuffer_alloc(sizeof(u32) * 16, &dev->dev);
366 if (!info) {
367 printk(KERN_ERR "efifb: cannot allocate framebuffer\n");
368 err = -ENOMEM;
369 goto err_release_mem;
370 }
371 info->pseudo_palette = info->par;
372 info->par = NULL;
373
374 info->apertures = alloc_apertures(1);
375 if (!info->apertures) {
376 err = -ENOMEM;
377 goto err_release_fb;
378 }
379 info->apertures->ranges[0].base = efifb_fix.smem_start;
380 info->apertures->ranges[0].size = size_remap;
381
382 info->screen_base = ioremap(efifb_fix.smem_start, efifb_fix.smem_len);
383 if (!info->screen_base) {
384 printk(KERN_ERR "efifb: abort, cannot ioremap video memory "
385 "0x%x @ 0x%lx\n",
386 efifb_fix.smem_len, efifb_fix.smem_start);
387 err = -EIO;
388 goto err_release_fb;
389 }
390
391 printk(KERN_INFO "efifb: framebuffer at 0x%lx, mapped to 0x%p, "
392 "using %dk, total %dk\n",
393 efifb_fix.smem_start, info->screen_base,
394 size_remap/1024, size_total/1024);
395 printk(KERN_INFO "efifb: mode is %dx%dx%d, linelength=%d, pages=%d\n",
396 efifb_defined.xres, efifb_defined.yres,
397 efifb_defined.bits_per_pixel, efifb_fix.line_length,
398 screen_info.pages);
399
400 efifb_defined.xres_virtual = efifb_defined.xres;
401 efifb_defined.yres_virtual = efifb_fix.smem_len /
402 efifb_fix.line_length;
403 printk(KERN_INFO "efifb: scrolling: redraw\n");
404 efifb_defined.yres_virtual = efifb_defined.yres;
405
406 /* some dummy values for timing to make fbset happy */
407 efifb_defined.pixclock = 10000000 / efifb_defined.xres *
408 1000 / efifb_defined.yres;
409 efifb_defined.left_margin = (efifb_defined.xres / 8) & 0xf8;
410 efifb_defined.hsync_len = (efifb_defined.xres / 8) & 0xf8;
411
412 efifb_defined.red.offset = screen_info.red_pos;
413 efifb_defined.red.length = screen_info.red_size;
414 efifb_defined.green.offset = screen_info.green_pos;
415 efifb_defined.green.length = screen_info.green_size;
416 efifb_defined.blue.offset = screen_info.blue_pos;
417 efifb_defined.blue.length = screen_info.blue_size;
418 efifb_defined.transp.offset = screen_info.rsvd_pos;
419 efifb_defined.transp.length = screen_info.rsvd_size;
420
421 printk(KERN_INFO "efifb: %s: "
422 "size=%d:%d:%d:%d, shift=%d:%d:%d:%d\n",
423 "Truecolor",
424 screen_info.rsvd_size,
425 screen_info.red_size,
426 screen_info.green_size,
427 screen_info.blue_size,
428 screen_info.rsvd_pos,
429 screen_info.red_pos,
430 screen_info.green_pos,
431 screen_info.blue_pos);
432
433 efifb_fix.ypanstep = 0;
434 efifb_fix.ywrapstep = 0;
435
436 info->fbops = &efifb_ops;
437 info->var = efifb_defined;
438 info->fix = efifb_fix;
439 info->flags = FBINFO_FLAG_DEFAULT | FBINFO_MISC_FIRMWARE;
440
441 if ((err = fb_alloc_cmap(&info->cmap, 256, 0)) < 0) {
442 printk(KERN_ERR "efifb: cannot allocate colormap\n");
443 goto err_unmap;
444 }
445 if ((err = register_framebuffer(info)) < 0) {
446 printk(KERN_ERR "efifb: cannot register framebuffer\n");
447 goto err_fb_dealoc;
448 }
449 printk(KERN_INFO "fb%d: %s frame buffer device\n",
450 info->node, info->fix.id);
451 return 0;
452
453 err_fb_dealoc:
454 fb_dealloc_cmap(&info->cmap);
455 err_unmap:
456 iounmap(info->screen_base);
457 err_release_fb:
458 framebuffer_release(info);
459 err_release_mem:
460 if (request_succeeded)
461 release_mem_region(efifb_fix.smem_start, size_total);
462 return err;
463 }
464
465 static struct platform_driver efifb_driver = {
466 .probe = efifb_probe,
467 .driver = {
468 .name = "efifb",
469 },
470 };
471
472 static struct platform_device efifb_device = {
473 .name = "efifb",
474 };
475
476 static int __init efifb_init(void)
477 {
478 int ret;
479 char *option = NULL;
480
481 dmi_check_system(dmi_system_table);
482
483 if (screen_info.orig_video_isVGA != VIDEO_TYPE_EFI)
484 return -ENODEV;
485
486 if (fb_get_options("efifb", &option))
487 return -ENODEV;
488 efifb_setup(option);
489
490 /* We don't get linelength from UGA Draw Protocol, only from
491 * EFI Graphics Protocol. So if it's not in DMI, and it's not
492 * passed in from the user, we really can't use the framebuffer.
493 */
494 if (!screen_info.lfb_linelength)
495 return -ENODEV;
496
497 ret = platform_driver_register(&efifb_driver);
498
499 if (!ret) {
500 ret = platform_device_register(&efifb_device);
501 if (ret)
502 platform_driver_unregister(&efifb_driver);
503 }
504 return ret;
505 }
506 module_init(efifb_init);
507
508 MODULE_LICENSE("GPL");
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree