Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * linux/drivers/video/offb.c -- Open Firmware based frame buffer device | |
3 | * | |
4 | * Copyright (C) 1997 Geert Uytterhoeven | |
5 | * | |
6 | * This driver is partly based on the PowerMac console driver: | |
7 | * | |
8 | * Copyright (C) 1996 Paul Mackerras | |
9 | * | |
10 | * This file is subject to the terms and conditions of the GNU General Public | |
11 | * License. See the file COPYING in the main directory of this archive for | |
12 | * more details. | |
13 | */ | |
14 | ||
1da177e4 LT |
15 | #include <linux/module.h> |
16 | #include <linux/kernel.h> | |
17 | #include <linux/errno.h> | |
18 | #include <linux/string.h> | |
19 | #include <linux/mm.h> | |
1da177e4 LT |
20 | #include <linux/vmalloc.h> |
21 | #include <linux/delay.h> | |
22ae782f GL |
22 | #include <linux/of.h> |
23 | #include <linux/of_address.h> | |
1da177e4 LT |
24 | #include <linux/interrupt.h> |
25 | #include <linux/fb.h> | |
26 | #include <linux/init.h> | |
27 | #include <linux/ioport.h> | |
f365cfd0 | 28 | #include <linux/pci.h> |
1da177e4 | 29 | #include <asm/io.h> |
1da177e4 | 30 | |
1da177e4 LT |
31 | #ifdef CONFIG_PPC32 |
32 | #include <asm/bootx.h> | |
33 | #endif | |
34 | ||
35 | #include "macmodes.h" | |
36 | ||
37 | /* Supported palette hacks */ | |
38 | enum { | |
39 | cmap_unknown, | |
9b961ed2 | 40 | cmap_simple, /* ATI Mach64 */ |
1da177e4 LT |
41 | cmap_r128, /* ATI Rage128 */ |
42 | cmap_M3A, /* ATI Rage Mobility M3 Head A */ | |
43 | cmap_M3B, /* ATI Rage Mobility M3 Head B */ | |
44 | cmap_radeon, /* ATI Radeon */ | |
45 | cmap_gxt2000, /* IBM GXT2000 */ | |
57a20d8f | 46 | cmap_avivo, /* ATI R5xx */ |
9b961ed2 | 47 | cmap_qemu, /* qemu vga */ |
1da177e4 LT |
48 | }; |
49 | ||
50 | struct offb_par { | |
51 | volatile void __iomem *cmap_adr; | |
52 | volatile void __iomem *cmap_data; | |
53 | int cmap_type; | |
54 | int blanked; | |
55 | }; | |
56 | ||
57 | struct offb_par default_par; | |
58 | ||
1da177e4 LT |
59 | #ifdef CONFIG_PPC32 |
60 | extern boot_infos_t *boot_infos; | |
61 | #endif | |
62 | ||
57a20d8f BH |
63 | /* Definitions used by the Avivo palette hack */ |
64 | #define AVIVO_DC_LUT_RW_SELECT 0x6480 | |
65 | #define AVIVO_DC_LUT_RW_MODE 0x6484 | |
66 | #define AVIVO_DC_LUT_RW_INDEX 0x6488 | |
67 | #define AVIVO_DC_LUT_SEQ_COLOR 0x648c | |
68 | #define AVIVO_DC_LUT_PWL_DATA 0x6490 | |
69 | #define AVIVO_DC_LUT_30_COLOR 0x6494 | |
70 | #define AVIVO_DC_LUT_READ_PIPE_SELECT 0x6498 | |
71 | #define AVIVO_DC_LUT_WRITE_EN_MASK 0x649c | |
72 | #define AVIVO_DC_LUT_AUTOFILL 0x64a0 | |
73 | ||
74 | #define AVIVO_DC_LUTA_CONTROL 0x64c0 | |
75 | #define AVIVO_DC_LUTA_BLACK_OFFSET_BLUE 0x64c4 | |
76 | #define AVIVO_DC_LUTA_BLACK_OFFSET_GREEN 0x64c8 | |
77 | #define AVIVO_DC_LUTA_BLACK_OFFSET_RED 0x64cc | |
78 | #define AVIVO_DC_LUTA_WHITE_OFFSET_BLUE 0x64d0 | |
79 | #define AVIVO_DC_LUTA_WHITE_OFFSET_GREEN 0x64d4 | |
80 | #define AVIVO_DC_LUTA_WHITE_OFFSET_RED 0x64d8 | |
81 | ||
82 | #define AVIVO_DC_LUTB_CONTROL 0x6cc0 | |
83 | #define AVIVO_DC_LUTB_BLACK_OFFSET_BLUE 0x6cc4 | |
84 | #define AVIVO_DC_LUTB_BLACK_OFFSET_GREEN 0x6cc8 | |
85 | #define AVIVO_DC_LUTB_BLACK_OFFSET_RED 0x6ccc | |
86 | #define AVIVO_DC_LUTB_WHITE_OFFSET_BLUE 0x6cd0 | |
87 | #define AVIVO_DC_LUTB_WHITE_OFFSET_GREEN 0x6cd4 | |
88 | #define AVIVO_DC_LUTB_WHITE_OFFSET_RED 0x6cd8 | |
1da177e4 LT |
89 | |
90 | /* | |
91 | * Set a single color register. The values supplied are already | |
92 | * rounded down to the hardware's capabilities (according to the | |
93 | * entries in the var structure). Return != 0 for invalid regno. | |
94 | */ | |
95 | ||
96 | static int offb_setcolreg(u_int regno, u_int red, u_int green, u_int blue, | |
97 | u_int transp, struct fb_info *info) | |
98 | { | |
99 | struct offb_par *par = (struct offb_par *) info->par; | |
1bb0b7d2 BH |
100 | |
101 | if (info->fix.visual == FB_VISUAL_TRUECOLOR) { | |
102 | u32 *pal = info->pseudo_palette; | |
103 | u32 cr = red >> (16 - info->var.red.length); | |
104 | u32 cg = green >> (16 - info->var.green.length); | |
105 | u32 cb = blue >> (16 - info->var.blue.length); | |
106 | u32 value; | |
107 | ||
108 | if (regno >= 16) | |
109 | return -EINVAL; | |
110 | ||
111 | value = (cr << info->var.red.offset) | | |
112 | (cg << info->var.green.offset) | | |
113 | (cb << info->var.blue.offset); | |
114 | if (info->var.transp.length > 0) { | |
115 | u32 mask = (1 << info->var.transp.length) - 1; | |
116 | mask <<= info->var.transp.offset; | |
117 | value |= mask; | |
ab134466 | 118 | } |
68986c9f | 119 | pal[regno] = value; |
1bb0b7d2 | 120 | return 0; |
ab134466 BH |
121 | } |
122 | ||
1bb0b7d2 BH |
123 | if (regno > 255) |
124 | return -EINVAL; | |
125 | ||
1da177e4 LT |
126 | red >>= 8; |
127 | green >>= 8; | |
128 | blue >>= 8; | |
129 | ||
ab134466 BH |
130 | if (!par->cmap_adr) |
131 | return 0; | |
132 | ||
1da177e4 | 133 | switch (par->cmap_type) { |
9b961ed2 | 134 | case cmap_simple: |
1da177e4 LT |
135 | writeb(regno, par->cmap_adr); |
136 | writeb(red, par->cmap_data); | |
137 | writeb(green, par->cmap_data); | |
138 | writeb(blue, par->cmap_data); | |
139 | break; | |
140 | case cmap_M3A: | |
141 | /* Clear PALETTE_ACCESS_CNTL in DAC_CNTL */ | |
142 | out_le32(par->cmap_adr + 0x58, | |
143 | in_le32(par->cmap_adr + 0x58) & ~0x20); | |
144 | case cmap_r128: | |
145 | /* Set palette index & data */ | |
146 | out_8(par->cmap_adr + 0xb0, regno); | |
147 | out_le32(par->cmap_adr + 0xb4, | |
148 | (red << 16 | green << 8 | blue)); | |
149 | break; | |
150 | case cmap_M3B: | |
151 | /* Set PALETTE_ACCESS_CNTL in DAC_CNTL */ | |
152 | out_le32(par->cmap_adr + 0x58, | |
153 | in_le32(par->cmap_adr + 0x58) | 0x20); | |
154 | /* Set palette index & data */ | |
155 | out_8(par->cmap_adr + 0xb0, regno); | |
156 | out_le32(par->cmap_adr + 0xb4, (red << 16 | green << 8 | blue)); | |
157 | break; | |
158 | case cmap_radeon: | |
159 | /* Set palette index & data (could be smarter) */ | |
160 | out_8(par->cmap_adr + 0xb0, regno); | |
161 | out_le32(par->cmap_adr + 0xb4, (red << 16 | green << 8 | blue)); | |
162 | break; | |
163 | case cmap_gxt2000: | |
441cbd8d | 164 | out_le32(((unsigned __iomem *) par->cmap_adr) + regno, |
1da177e4 LT |
165 | (red << 16 | green << 8 | blue)); |
166 | break; | |
57a20d8f BH |
167 | case cmap_avivo: |
168 | /* Write to both LUTs for now */ | |
169 | writel(1, par->cmap_adr + AVIVO_DC_LUT_RW_SELECT); | |
170 | writeb(regno, par->cmap_adr + AVIVO_DC_LUT_RW_INDEX); | |
171 | writel(((red) << 22) | ((green) << 12) | ((blue) << 2), | |
172 | par->cmap_adr + AVIVO_DC_LUT_30_COLOR); | |
173 | writel(0, par->cmap_adr + AVIVO_DC_LUT_RW_SELECT); | |
174 | writeb(regno, par->cmap_adr + AVIVO_DC_LUT_RW_INDEX); | |
175 | writel(((red) << 22) | ((green) << 12) | ((blue) << 2), | |
176 | par->cmap_adr + AVIVO_DC_LUT_30_COLOR); | |
177 | break; | |
1da177e4 LT |
178 | } |
179 | ||
1da177e4 LT |
180 | return 0; |
181 | } | |
182 | ||
183 | /* | |
184 | * Blank the display. | |
185 | */ | |
186 | ||
187 | static int offb_blank(int blank, struct fb_info *info) | |
188 | { | |
189 | struct offb_par *par = (struct offb_par *) info->par; | |
190 | int i, j; | |
191 | ||
192 | if (!par->cmap_adr) | |
193 | return 0; | |
194 | ||
195 | if (!par->blanked) | |
196 | if (!blank) | |
197 | return 0; | |
198 | ||
199 | par->blanked = blank; | |
200 | ||
201 | if (blank) | |
202 | for (i = 0; i < 256; i++) { | |
203 | switch (par->cmap_type) { | |
9b961ed2 | 204 | case cmap_simple: |
1da177e4 LT |
205 | writeb(i, par->cmap_adr); |
206 | for (j = 0; j < 3; j++) | |
207 | writeb(0, par->cmap_data); | |
208 | break; | |
209 | case cmap_M3A: | |
210 | /* Clear PALETTE_ACCESS_CNTL in DAC_CNTL */ | |
211 | out_le32(par->cmap_adr + 0x58, | |
212 | in_le32(par->cmap_adr + 0x58) & ~0x20); | |
213 | case cmap_r128: | |
214 | /* Set palette index & data */ | |
215 | out_8(par->cmap_adr + 0xb0, i); | |
216 | out_le32(par->cmap_adr + 0xb4, 0); | |
217 | break; | |
218 | case cmap_M3B: | |
219 | /* Set PALETTE_ACCESS_CNTL in DAC_CNTL */ | |
220 | out_le32(par->cmap_adr + 0x58, | |
221 | in_le32(par->cmap_adr + 0x58) | 0x20); | |
222 | /* Set palette index & data */ | |
223 | out_8(par->cmap_adr + 0xb0, i); | |
224 | out_le32(par->cmap_adr + 0xb4, 0); | |
225 | break; | |
226 | case cmap_radeon: | |
227 | out_8(par->cmap_adr + 0xb0, i); | |
228 | out_le32(par->cmap_adr + 0xb4, 0); | |
229 | break; | |
230 | case cmap_gxt2000: | |
441cbd8d | 231 | out_le32(((unsigned __iomem *) par->cmap_adr) + i, |
1da177e4 LT |
232 | 0); |
233 | break; | |
57a20d8f BH |
234 | case cmap_avivo: |
235 | writel(1, par->cmap_adr + AVIVO_DC_LUT_RW_SELECT); | |
236 | writeb(i, par->cmap_adr + AVIVO_DC_LUT_RW_INDEX); | |
237 | writel(0, par->cmap_adr + AVIVO_DC_LUT_30_COLOR); | |
238 | writel(0, par->cmap_adr + AVIVO_DC_LUT_RW_SELECT); | |
239 | writeb(i, par->cmap_adr + AVIVO_DC_LUT_RW_INDEX); | |
240 | writel(0, par->cmap_adr + AVIVO_DC_LUT_30_COLOR); | |
241 | break; | |
1da177e4 LT |
242 | } |
243 | } else | |
244 | fb_set_cmap(&info->cmap, info); | |
245 | return 0; | |
246 | } | |
247 | ||
57a20d8f BH |
248 | static int offb_set_par(struct fb_info *info) |
249 | { | |
250 | struct offb_par *par = (struct offb_par *) info->par; | |
251 | ||
252 | /* On avivo, initialize palette control */ | |
253 | if (par->cmap_type == cmap_avivo) { | |
254 | writel(0, par->cmap_adr + AVIVO_DC_LUTA_CONTROL); | |
255 | writel(0, par->cmap_adr + AVIVO_DC_LUTA_BLACK_OFFSET_BLUE); | |
256 | writel(0, par->cmap_adr + AVIVO_DC_LUTA_BLACK_OFFSET_GREEN); | |
257 | writel(0, par->cmap_adr + AVIVO_DC_LUTA_BLACK_OFFSET_RED); | |
258 | writel(0x0000ffff, par->cmap_adr + AVIVO_DC_LUTA_WHITE_OFFSET_BLUE); | |
259 | writel(0x0000ffff, par->cmap_adr + AVIVO_DC_LUTA_WHITE_OFFSET_GREEN); | |
260 | writel(0x0000ffff, par->cmap_adr + AVIVO_DC_LUTA_WHITE_OFFSET_RED); | |
261 | writel(0, par->cmap_adr + AVIVO_DC_LUTB_CONTROL); | |
262 | writel(0, par->cmap_adr + AVIVO_DC_LUTB_BLACK_OFFSET_BLUE); | |
263 | writel(0, par->cmap_adr + AVIVO_DC_LUTB_BLACK_OFFSET_GREEN); | |
264 | writel(0, par->cmap_adr + AVIVO_DC_LUTB_BLACK_OFFSET_RED); | |
265 | writel(0x0000ffff, par->cmap_adr + AVIVO_DC_LUTB_WHITE_OFFSET_BLUE); | |
266 | writel(0x0000ffff, par->cmap_adr + AVIVO_DC_LUTB_WHITE_OFFSET_GREEN); | |
267 | writel(0x0000ffff, par->cmap_adr + AVIVO_DC_LUTB_WHITE_OFFSET_RED); | |
268 | writel(1, par->cmap_adr + AVIVO_DC_LUT_RW_SELECT); | |
269 | writel(0, par->cmap_adr + AVIVO_DC_LUT_RW_MODE); | |
270 | writel(0x0000003f, par->cmap_adr + AVIVO_DC_LUT_WRITE_EN_MASK); | |
271 | writel(0, par->cmap_adr + AVIVO_DC_LUT_RW_SELECT); | |
272 | writel(0, par->cmap_adr + AVIVO_DC_LUT_RW_MODE); | |
273 | writel(0x0000003f, par->cmap_adr + AVIVO_DC_LUT_WRITE_EN_MASK); | |
274 | } | |
275 | return 0; | |
276 | } | |
277 | ||
ceae8cbe DA |
278 | static void offb_destroy(struct fb_info *info) |
279 | { | |
280 | if (info->screen_base) | |
281 | iounmap(info->screen_base); | |
1471ca9a | 282 | release_mem_region(info->apertures->ranges[0].base, info->apertures->ranges[0].size); |
ceae8cbe DA |
283 | framebuffer_release(info); |
284 | } | |
285 | ||
57a20d8f BH |
286 | static struct fb_ops offb_ops = { |
287 | .owner = THIS_MODULE, | |
ceae8cbe | 288 | .fb_destroy = offb_destroy, |
57a20d8f BH |
289 | .fb_setcolreg = offb_setcolreg, |
290 | .fb_set_par = offb_set_par, | |
291 | .fb_blank = offb_blank, | |
292 | .fb_fillrect = cfb_fillrect, | |
293 | .fb_copyarea = cfb_copyarea, | |
294 | .fb_imageblit = cfb_imageblit, | |
295 | }; | |
1da177e4 | 296 | |
73ea6959 BH |
297 | static void __iomem *offb_map_reg(struct device_node *np, int index, |
298 | unsigned long offset, unsigned long size) | |
1da177e4 | 299 | { |
212c0cbd | 300 | const __be32 *addrp; |
441cbd8d BH |
301 | u64 asize, taddr; |
302 | unsigned int flags; | |
303 | ||
304 | addrp = of_get_pci_address(np, index, &asize, &flags); | |
305 | if (addrp == NULL) | |
306 | addrp = of_get_address(np, index, &asize, &flags); | |
307 | if (addrp == NULL) | |
308 | return NULL; | |
309 | if ((flags & (IORESOURCE_IO | IORESOURCE_MEM)) == 0) | |
310 | return NULL; | |
311 | if ((offset + size) > asize) | |
312 | return NULL; | |
313 | taddr = of_translate_address(np, addrp); | |
314 | if (taddr == OF_BAD_ADDR) | |
315 | return NULL; | |
316 | return ioremap(taddr + offset, size); | |
1da177e4 LT |
317 | } |
318 | ||
57a20d8f BH |
319 | static void offb_init_palette_hacks(struct fb_info *info, struct device_node *dp, |
320 | const char *name, unsigned long address) | |
321 | { | |
322 | struct offb_par *par = (struct offb_par *) info->par; | |
323 | ||
324 | if (dp && !strncmp(name, "ATY,Rage128", 11)) { | |
325 | par->cmap_adr = offb_map_reg(dp, 2, 0, 0x1fff); | |
326 | if (par->cmap_adr) | |
327 | par->cmap_type = cmap_r128; | |
328 | } else if (dp && (!strncmp(name, "ATY,RageM3pA", 12) | |
329 | || !strncmp(name, "ATY,RageM3p12A", 14))) { | |
330 | par->cmap_adr = offb_map_reg(dp, 2, 0, 0x1fff); | |
331 | if (par->cmap_adr) | |
332 | par->cmap_type = cmap_M3A; | |
333 | } else if (dp && !strncmp(name, "ATY,RageM3pB", 12)) { | |
334 | par->cmap_adr = offb_map_reg(dp, 2, 0, 0x1fff); | |
335 | if (par->cmap_adr) | |
336 | par->cmap_type = cmap_M3B; | |
337 | } else if (dp && !strncmp(name, "ATY,Rage6", 9)) { | |
338 | par->cmap_adr = offb_map_reg(dp, 1, 0, 0x1fff); | |
339 | if (par->cmap_adr) | |
340 | par->cmap_type = cmap_radeon; | |
341 | } else if (!strncmp(name, "ATY,", 4)) { | |
342 | unsigned long base = address & 0xff000000UL; | |
343 | par->cmap_adr = | |
344 | ioremap(base + 0x7ff000, 0x1000) + 0xcc0; | |
345 | par->cmap_data = par->cmap_adr + 1; | |
9b961ed2 | 346 | par->cmap_type = cmap_simple; |
57a20d8f BH |
347 | } else if (dp && (of_device_is_compatible(dp, "pci1014,b7") || |
348 | of_device_is_compatible(dp, "pci1014,21c"))) { | |
349 | par->cmap_adr = offb_map_reg(dp, 0, 0x6000, 0x1000); | |
350 | if (par->cmap_adr) | |
351 | par->cmap_type = cmap_gxt2000; | |
352 | } else if (dp && !strncmp(name, "vga,Display-", 12)) { | |
353 | /* Look for AVIVO initialized by SLOF */ | |
354 | struct device_node *pciparent = of_get_parent(dp); | |
355 | const u32 *vid, *did; | |
356 | vid = of_get_property(pciparent, "vendor-id", NULL); | |
357 | did = of_get_property(pciparent, "device-id", NULL); | |
358 | /* This will match most R5xx */ | |
359 | if (vid && did && *vid == 0x1002 && | |
360 | ((*did >= 0x7100 && *did < 0x7800) || | |
361 | (*did >= 0x9400))) { | |
362 | par->cmap_adr = offb_map_reg(pciparent, 2, 0, 0x10000); | |
363 | if (par->cmap_adr) | |
364 | par->cmap_type = cmap_avivo; | |
365 | } | |
366 | of_node_put(pciparent); | |
9b961ed2 | 367 | } else if (dp && of_device_is_compatible(dp, "qemu,std-vga")) { |
212c0cbd CLG |
368 | #ifdef __BIG_ENDIAN |
369 | const __be32 io_of_addr[3] = { 0x01000000, 0x0, 0x0 }; | |
370 | #else | |
371 | const __be32 io_of_addr[3] = { 0x00000001, 0x0, 0x0 }; | |
372 | #endif | |
9b961ed2 BH |
373 | u64 io_addr = of_translate_address(dp, io_of_addr); |
374 | if (io_addr != OF_BAD_ADDR) { | |
375 | par->cmap_adr = ioremap(io_addr + 0x3c8, 2); | |
376 | if (par->cmap_adr) { | |
377 | par->cmap_type = cmap_simple; | |
378 | par->cmap_data = par->cmap_adr + 1; | |
379 | } | |
380 | } | |
57a20d8f BH |
381 | } |
382 | info->fix.visual = (par->cmap_type != cmap_unknown) ? | |
383 | FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_STATIC_PSEUDOCOLOR; | |
384 | } | |
385 | ||
1da177e4 LT |
386 | static void __init offb_init_fb(const char *name, const char *full_name, |
387 | int width, int height, int depth, | |
388 | int pitch, unsigned long address, | |
7f29b87a | 389 | int foreign_endian, struct device_node *dp) |
1da177e4 | 390 | { |
c055fe07 | 391 | unsigned long res_size = pitch * height; |
1da177e4 LT |
392 | struct offb_par *par = &default_par; |
393 | unsigned long res_start = address; | |
394 | struct fb_fix_screeninfo *fix; | |
395 | struct fb_var_screeninfo *var; | |
396 | struct fb_info *info; | |
1da177e4 LT |
397 | |
398 | if (!request_mem_region(res_start, res_size, "offb")) | |
399 | return; | |
400 | ||
401 | printk(KERN_INFO | |
402 | "Using unsupported %dx%d %s at %lx, depth=%d, pitch=%d\n", | |
403 | width, height, name, address, depth, pitch); | |
ab134466 | 404 | if (depth != 8 && depth != 15 && depth != 16 && depth != 32) { |
1da177e4 LT |
405 | printk(KERN_ERR "%s: can't use depth = %d\n", full_name, |
406 | depth); | |
407 | release_mem_region(res_start, res_size); | |
408 | return; | |
409 | } | |
410 | ||
4113819e | 411 | info = framebuffer_alloc(sizeof(u32) * 16, NULL); |
1da177e4 LT |
412 | |
413 | if (info == 0) { | |
414 | release_mem_region(res_start, res_size); | |
415 | return; | |
416 | } | |
1da177e4 LT |
417 | |
418 | fix = &info->fix; | |
419 | var = &info->var; | |
57a20d8f | 420 | info->par = par; |
1da177e4 LT |
421 | |
422 | strcpy(fix->id, "OFfb "); | |
423 | strncat(fix->id, name, sizeof(fix->id) - sizeof("OFfb ")); | |
424 | fix->id[sizeof(fix->id) - 1] = '\0'; | |
425 | ||
426 | var->xres = var->xres_virtual = width; | |
427 | var->yres = var->yres_virtual = height; | |
428 | fix->line_length = pitch; | |
429 | ||
430 | fix->smem_start = address; | |
431 | fix->smem_len = pitch * height; | |
432 | fix->type = FB_TYPE_PACKED_PIXELS; | |
433 | fix->type_aux = 0; | |
434 | ||
435 | par->cmap_type = cmap_unknown; | |
57a20d8f BH |
436 | if (depth == 8) |
437 | offb_init_palette_hacks(info, dp, name, address); | |
438 | else | |
73ea6959 | 439 | fix->visual = FB_VISUAL_TRUECOLOR; |
1da177e4 LT |
440 | |
441 | var->xoffset = var->yoffset = 0; | |
1da177e4 LT |
442 | switch (depth) { |
443 | case 8: | |
444 | var->bits_per_pixel = 8; | |
445 | var->red.offset = 0; | |
446 | var->red.length = 8; | |
447 | var->green.offset = 0; | |
448 | var->green.length = 8; | |
449 | var->blue.offset = 0; | |
450 | var->blue.length = 8; | |
451 | var->transp.offset = 0; | |
452 | var->transp.length = 0; | |
453 | break; | |
ab134466 | 454 | case 15: /* RGB 555 */ |
1da177e4 LT |
455 | var->bits_per_pixel = 16; |
456 | var->red.offset = 10; | |
457 | var->red.length = 5; | |
458 | var->green.offset = 5; | |
459 | var->green.length = 5; | |
460 | var->blue.offset = 0; | |
461 | var->blue.length = 5; | |
462 | var->transp.offset = 0; | |
463 | var->transp.length = 0; | |
464 | break; | |
ab134466 BH |
465 | case 16: /* RGB 565 */ |
466 | var->bits_per_pixel = 16; | |
467 | var->red.offset = 11; | |
468 | var->red.length = 5; | |
469 | var->green.offset = 5; | |
470 | var->green.length = 6; | |
471 | var->blue.offset = 0; | |
472 | var->blue.length = 5; | |
473 | var->transp.offset = 0; | |
474 | var->transp.length = 0; | |
475 | break; | |
1da177e4 LT |
476 | case 32: /* RGB 888 */ |
477 | var->bits_per_pixel = 32; | |
478 | var->red.offset = 16; | |
479 | var->red.length = 8; | |
480 | var->green.offset = 8; | |
481 | var->green.length = 8; | |
482 | var->blue.offset = 0; | |
483 | var->blue.length = 8; | |
484 | var->transp.offset = 24; | |
485 | var->transp.length = 8; | |
486 | break; | |
487 | } | |
488 | var->red.msb_right = var->green.msb_right = var->blue.msb_right = | |
489 | var->transp.msb_right = 0; | |
490 | var->grayscale = 0; | |
491 | var->nonstd = 0; | |
492 | var->activate = 0; | |
493 | var->height = var->width = -1; | |
494 | var->pixclock = 10000; | |
495 | var->left_margin = var->right_margin = 16; | |
496 | var->upper_margin = var->lower_margin = 16; | |
497 | var->hsync_len = var->vsync_len = 8; | |
498 | var->sync = 0; | |
499 | var->vmode = FB_VMODE_NONINTERLACED; | |
500 | ||
ceae8cbe | 501 | /* set offb aperture size for generic probing */ |
1471ca9a MS |
502 | info->apertures = alloc_apertures(1); |
503 | if (!info->apertures) | |
504 | goto out_aper; | |
505 | info->apertures->ranges[0].base = address; | |
506 | info->apertures->ranges[0].size = fix->smem_len; | |
ceae8cbe | 507 | |
1da177e4 LT |
508 | info->fbops = &offb_ops; |
509 | info->screen_base = ioremap(address, fix->smem_len); | |
1da177e4 | 510 | info->pseudo_palette = (void *) (info + 1); |
ceae8cbe | 511 | info->flags = FBINFO_DEFAULT | FBINFO_MISC_FIRMWARE | foreign_endian; |
1da177e4 LT |
512 | |
513 | fb_alloc_cmap(&info->cmap, 256, 0); | |
514 | ||
1471ca9a MS |
515 | if (register_framebuffer(info) < 0) |
516 | goto out_err; | |
1da177e4 | 517 | |
31b6780c | 518 | fb_info(info, "Open Firmware frame buffer device on %s\n", full_name); |
1471ca9a MS |
519 | return; |
520 | ||
521 | out_err: | |
522 | iounmap(info->screen_base); | |
523 | out_aper: | |
524 | iounmap(par->cmap_adr); | |
525 | par->cmap_adr = NULL; | |
526 | framebuffer_release(info); | |
527 | release_mem_region(res_start, res_size); | |
1da177e4 LT |
528 | } |
529 | ||
73ea6959 BH |
530 | |
531 | static void __init offb_init_nodriver(struct device_node *dp, int no_real_node) | |
532 | { | |
533 | unsigned int len; | |
534 | int i, width = 640, height = 480, depth = 8, pitch = 640; | |
535 | unsigned int flags, rsize, addr_prop = 0; | |
536 | unsigned long max_size = 0; | |
537 | u64 rstart, address = OF_BAD_ADDR; | |
212c0cbd | 538 | const __be32 *pp, *addrp, *up; |
73ea6959 | 539 | u64 asize; |
7f29b87a AV |
540 | int foreign_endian = 0; |
541 | ||
542 | #ifdef __BIG_ENDIAN | |
543 | if (of_get_property(dp, "little-endian", NULL)) | |
544 | foreign_endian = FBINFO_FOREIGN_ENDIAN; | |
545 | #else | |
546 | if (of_get_property(dp, "big-endian", NULL)) | |
547 | foreign_endian = FBINFO_FOREIGN_ENDIAN; | |
548 | #endif | |
73ea6959 | 549 | |
40cd3a45 | 550 | pp = of_get_property(dp, "linux,bootx-depth", &len); |
73ea6959 | 551 | if (pp == NULL) |
40cd3a45 | 552 | pp = of_get_property(dp, "depth", &len); |
73ea6959 | 553 | if (pp && len == sizeof(u32)) |
212c0cbd | 554 | depth = be32_to_cpup(pp); |
73ea6959 | 555 | |
40cd3a45 | 556 | pp = of_get_property(dp, "linux,bootx-width", &len); |
73ea6959 | 557 | if (pp == NULL) |
40cd3a45 | 558 | pp = of_get_property(dp, "width", &len); |
73ea6959 | 559 | if (pp && len == sizeof(u32)) |
212c0cbd | 560 | width = be32_to_cpup(pp); |
73ea6959 | 561 | |
40cd3a45 | 562 | pp = of_get_property(dp, "linux,bootx-height", &len); |
73ea6959 | 563 | if (pp == NULL) |
40cd3a45 | 564 | pp = of_get_property(dp, "height", &len); |
73ea6959 | 565 | if (pp && len == sizeof(u32)) |
212c0cbd | 566 | height = be32_to_cpup(pp); |
73ea6959 | 567 | |
40cd3a45 | 568 | pp = of_get_property(dp, "linux,bootx-linebytes", &len); |
73ea6959 | 569 | if (pp == NULL) |
40cd3a45 | 570 | pp = of_get_property(dp, "linebytes", &len); |
441cbd8d | 571 | if (pp && len == sizeof(u32) && (*pp != 0xffffffffu)) |
212c0cbd | 572 | pitch = be32_to_cpup(pp); |
73ea6959 BH |
573 | else |
574 | pitch = width * ((depth + 7) / 8); | |
575 | ||
576 | rsize = (unsigned long)pitch * (unsigned long)height; | |
577 | ||
578 | /* Ok, now we try to figure out the address of the framebuffer. | |
579 | * | |
580 | * Unfortunately, Open Firmware doesn't provide a standard way to do | |
581 | * so. All we can do is a dodgy heuristic that happens to work in | |
582 | * practice. On most machines, the "address" property contains what | |
583 | * we need, though not on Matrox cards found in IBM machines. What I've | |
584 | * found that appears to give good results is to go through the PCI | |
585 | * ranges and pick one that is both big enough and if possible encloses | |
586 | * the "address" property. If none match, we pick the biggest | |
587 | */ | |
40cd3a45 | 588 | up = of_get_property(dp, "linux,bootx-addr", &len); |
73ea6959 | 589 | if (up == NULL) |
40cd3a45 | 590 | up = of_get_property(dp, "address", &len); |
73ea6959 BH |
591 | if (up && len == sizeof(u32)) |
592 | addr_prop = *up; | |
593 | ||
594 | /* Hack for when BootX is passing us */ | |
595 | if (no_real_node) | |
596 | goto skip_addr; | |
597 | ||
598 | for (i = 0; (addrp = of_get_address(dp, i, &asize, &flags)) | |
599 | != NULL; i++) { | |
600 | int match_addrp = 0; | |
601 | ||
602 | if (!(flags & IORESOURCE_MEM)) | |
603 | continue; | |
604 | if (asize < rsize) | |
605 | continue; | |
606 | rstart = of_translate_address(dp, addrp); | |
607 | if (rstart == OF_BAD_ADDR) | |
608 | continue; | |
609 | if (addr_prop && (rstart <= addr_prop) && | |
610 | ((rstart + asize) >= (addr_prop + rsize))) | |
611 | match_addrp = 1; | |
612 | if (match_addrp) { | |
613 | address = addr_prop; | |
614 | break; | |
615 | } | |
616 | if (rsize > max_size) { | |
617 | max_size = rsize; | |
618 | address = OF_BAD_ADDR; | |
619 | } | |
620 | ||
621 | if (address == OF_BAD_ADDR) | |
622 | address = rstart; | |
623 | } | |
624 | skip_addr: | |
625 | if (address == OF_BAD_ADDR && addr_prop) | |
626 | address = (u64)addr_prop; | |
627 | if (address != OF_BAD_ADDR) { | |
5bda8f7b YX |
628 | #ifdef CONFIG_PCI |
629 | const __be32 *vidp, *didp; | |
630 | u32 vid, did; | |
631 | struct pci_dev *pdev; | |
632 | ||
633 | vidp = of_get_property(dp, "vendor-id", NULL); | |
634 | didp = of_get_property(dp, "device-id", NULL); | |
635 | if (vidp && didp) { | |
636 | vid = be32_to_cpup(vidp); | |
637 | did = be32_to_cpup(didp); | |
638 | pdev = pci_get_device(vid, did, NULL); | |
639 | if (!pdev || pci_enable_device(pdev)) | |
640 | return; | |
641 | } | |
642 | #endif | |
73ea6959 BH |
643 | /* kludge for valkyrie */ |
644 | if (strcmp(dp->name, "valkyrie") == 0) | |
645 | address += 0x1000; | |
646 | offb_init_fb(no_real_node ? "bootx" : dp->name, | |
647 | no_real_node ? "display" : dp->full_name, | |
648 | width, height, depth, pitch, address, | |
7f29b87a | 649 | foreign_endian, no_real_node ? NULL : dp); |
73ea6959 BH |
650 | } |
651 | } | |
652 | ||
653 | static int __init offb_init(void) | |
654 | { | |
655 | struct device_node *dp = NULL, *boot_disp = NULL; | |
656 | ||
657 | if (fb_get_options("offb", NULL)) | |
658 | return -ENODEV; | |
659 | ||
660 | /* Check if we have a MacOS display without a node spec */ | |
40cd3a45 | 661 | if (of_get_property(of_chosen, "linux,bootx-noscreen", NULL) != NULL) { |
73ea6959 BH |
662 | /* The old code tried to work out which node was the MacOS |
663 | * display based on the address. I'm dropping that since the | |
664 | * lack of a node spec only happens with old BootX versions | |
665 | * (users can update) and with this code, they'll still get | |
666 | * a display (just not the palette hacks). | |
667 | */ | |
668 | offb_init_nodriver(of_chosen, 1); | |
669 | } | |
670 | ||
671 | for (dp = NULL; (dp = of_find_node_by_type(dp, "display"));) { | |
40cd3a45 SR |
672 | if (of_get_property(dp, "linux,opened", NULL) && |
673 | of_get_property(dp, "linux,boot-display", NULL)) { | |
73ea6959 BH |
674 | boot_disp = dp; |
675 | offb_init_nodriver(dp, 0); | |
676 | } | |
677 | } | |
678 | for (dp = NULL; (dp = of_find_node_by_type(dp, "display"));) { | |
40cd3a45 | 679 | if (of_get_property(dp, "linux,opened", NULL) && |
73ea6959 BH |
680 | dp != boot_disp) |
681 | offb_init_nodriver(dp, 0); | |
682 | } | |
683 | ||
684 | return 0; | |
685 | } | |
686 | ||
687 | ||
1da177e4 LT |
688 | module_init(offb_init); |
689 | MODULE_LICENSE("GPL"); |