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[mirror_ubuntu-artful-kernel.git] / drivers / video / s3fb.c
1 /*
2 * linux/drivers/video/s3fb.c -- Frame buffer device driver for S3 Trio/Virge
3 *
4 * Copyright (c) 2006-2007 Ondrej Zajicek <santiago@crfreenet.org>
5 *
6 * This file is subject to the terms and conditions of the GNU General Public
7 * License. See the file COPYING in the main directory of this archive for
8 * more details.
9 *
10 * Code is based on David Boucher's viafb (http://davesdomain.org.uk/viafb/)
11 * which is based on the code of neofb.
12 */
13
14 #include <linux/module.h>
15 #include <linux/kernel.h>
16 #include <linux/errno.h>
17 #include <linux/string.h>
18 #include <linux/mm.h>
19 #include <linux/tty.h>
20 #include <linux/delay.h>
21 #include <linux/fb.h>
22 #include <linux/svga.h>
23 #include <linux/init.h>
24 #include <linux/pci.h>
25 #include <linux/console.h> /* Why should fb driver call console functions? because console_lock() */
26 #include <video/vga.h>
27
28 #include <linux/i2c.h>
29 #include <linux/i2c-algo-bit.h>
30
31 #ifdef CONFIG_MTRR
32 #include <asm/mtrr.h>
33 #endif
34
35 struct s3fb_info {
36 int chip, rev, mclk_freq;
37 int mtrr_reg;
38 struct vgastate state;
39 struct mutex open_lock;
40 unsigned int ref_count;
41 u32 pseudo_palette[16];
42 #ifdef CONFIG_FB_S3_DDC
43 u8 __iomem *mmio;
44 bool ddc_registered;
45 struct i2c_adapter ddc_adapter;
46 struct i2c_algo_bit_data ddc_algo;
47 #endif
48 };
49
50
51 /* ------------------------------------------------------------------------- */
52
53 static const struct svga_fb_format s3fb_formats[] = {
54 { 0, {0, 6, 0}, {0, 6, 0}, {0, 6, 0}, {0, 0, 0}, 0,
55 FB_TYPE_TEXT, FB_AUX_TEXT_SVGA_STEP4, FB_VISUAL_PSEUDOCOLOR, 8, 16},
56 { 4, {0, 4, 0}, {0, 4, 0}, {0, 4, 0}, {0, 0, 0}, 0,
57 FB_TYPE_PACKED_PIXELS, 0, FB_VISUAL_PSEUDOCOLOR, 8, 16},
58 { 4, {0, 4, 0}, {0, 4, 0}, {0, 4, 0}, {0, 0, 0}, 1,
59 FB_TYPE_INTERLEAVED_PLANES, 1, FB_VISUAL_PSEUDOCOLOR, 8, 16},
60 { 8, {0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0}, 0,
61 FB_TYPE_PACKED_PIXELS, 0, FB_VISUAL_PSEUDOCOLOR, 4, 8},
62 {16, {10, 5, 0}, {5, 5, 0}, {0, 5, 0}, {0, 0, 0}, 0,
63 FB_TYPE_PACKED_PIXELS, 0, FB_VISUAL_TRUECOLOR, 2, 4},
64 {16, {11, 5, 0}, {5, 6, 0}, {0, 5, 0}, {0, 0, 0}, 0,
65 FB_TYPE_PACKED_PIXELS, 0, FB_VISUAL_TRUECOLOR, 2, 4},
66 {24, {16, 8, 0}, {8, 8, 0}, {0, 8, 0}, {0, 0, 0}, 0,
67 FB_TYPE_PACKED_PIXELS, 0, FB_VISUAL_TRUECOLOR, 1, 2},
68 {32, {16, 8, 0}, {8, 8, 0}, {0, 8, 0}, {0, 0, 0}, 0,
69 FB_TYPE_PACKED_PIXELS, 0, FB_VISUAL_TRUECOLOR, 1, 2},
70 SVGA_FORMAT_END
71 };
72
73
74 static const struct svga_pll s3_pll = {3, 129, 3, 33, 0, 3,
75 35000, 240000, 14318};
76 static const struct svga_pll s3_trio3d_pll = {3, 129, 3, 31, 0, 4,
77 230000, 460000, 14318};
78
79 static const int s3_memsizes[] = {4096, 0, 3072, 8192, 2048, 6144, 1024, 512};
80
81 static const char * const s3_names[] = {"S3 Unknown", "S3 Trio32", "S3 Trio64", "S3 Trio64V+",
82 "S3 Trio64UV+", "S3 Trio64V2/DX", "S3 Trio64V2/GX",
83 "S3 Plato/PX", "S3 Aurora64V+", "S3 Virge",
84 "S3 Virge/VX", "S3 Virge/DX", "S3 Virge/GX",
85 "S3 Virge/GX2", "S3 Virge/GX2+", "",
86 "S3 Trio3D/1X", "S3 Trio3D/2X", "S3 Trio3D/2X",
87 "S3 Trio3D", "S3 Virge/MX"};
88
89 #define CHIP_UNKNOWN 0x00
90 #define CHIP_732_TRIO32 0x01
91 #define CHIP_764_TRIO64 0x02
92 #define CHIP_765_TRIO64VP 0x03
93 #define CHIP_767_TRIO64UVP 0x04
94 #define CHIP_775_TRIO64V2_DX 0x05
95 #define CHIP_785_TRIO64V2_GX 0x06
96 #define CHIP_551_PLATO_PX 0x07
97 #define CHIP_M65_AURORA64VP 0x08
98 #define CHIP_325_VIRGE 0x09
99 #define CHIP_988_VIRGE_VX 0x0A
100 #define CHIP_375_VIRGE_DX 0x0B
101 #define CHIP_385_VIRGE_GX 0x0C
102 #define CHIP_357_VIRGE_GX2 0x0D
103 #define CHIP_359_VIRGE_GX2P 0x0E
104 #define CHIP_360_TRIO3D_1X 0x10
105 #define CHIP_362_TRIO3D_2X 0x11
106 #define CHIP_368_TRIO3D_2X 0x12
107 #define CHIP_365_TRIO3D 0x13
108 #define CHIP_260_VIRGE_MX 0x14
109
110 #define CHIP_XXX_TRIO 0x80
111 #define CHIP_XXX_TRIO64V2_DXGX 0x81
112 #define CHIP_XXX_VIRGE_DXGX 0x82
113 #define CHIP_36X_TRIO3D_1X_2X 0x83
114
115 #define CHIP_UNDECIDED_FLAG 0x80
116 #define CHIP_MASK 0xFF
117
118 #define MMIO_OFFSET 0x1000000
119 #define MMIO_SIZE 0x10000
120
121 /* CRT timing register sets */
122
123 static const struct vga_regset s3_h_total_regs[] = {{0x00, 0, 7}, {0x5D, 0, 0}, VGA_REGSET_END};
124 static const struct vga_regset s3_h_display_regs[] = {{0x01, 0, 7}, {0x5D, 1, 1}, VGA_REGSET_END};
125 static const struct vga_regset s3_h_blank_start_regs[] = {{0x02, 0, 7}, {0x5D, 2, 2}, VGA_REGSET_END};
126 static const struct vga_regset s3_h_blank_end_regs[] = {{0x03, 0, 4}, {0x05, 7, 7}, VGA_REGSET_END};
127 static const struct vga_regset s3_h_sync_start_regs[] = {{0x04, 0, 7}, {0x5D, 4, 4}, VGA_REGSET_END};
128 static const struct vga_regset s3_h_sync_end_regs[] = {{0x05, 0, 4}, VGA_REGSET_END};
129
130 static const struct vga_regset s3_v_total_regs[] = {{0x06, 0, 7}, {0x07, 0, 0}, {0x07, 5, 5}, {0x5E, 0, 0}, VGA_REGSET_END};
131 static const struct vga_regset s3_v_display_regs[] = {{0x12, 0, 7}, {0x07, 1, 1}, {0x07, 6, 6}, {0x5E, 1, 1}, VGA_REGSET_END};
132 static const struct vga_regset s3_v_blank_start_regs[] = {{0x15, 0, 7}, {0x07, 3, 3}, {0x09, 5, 5}, {0x5E, 2, 2}, VGA_REGSET_END};
133 static const struct vga_regset s3_v_blank_end_regs[] = {{0x16, 0, 7}, VGA_REGSET_END};
134 static const struct vga_regset s3_v_sync_start_regs[] = {{0x10, 0, 7}, {0x07, 2, 2}, {0x07, 7, 7}, {0x5E, 4, 4}, VGA_REGSET_END};
135 static const struct vga_regset s3_v_sync_end_regs[] = {{0x11, 0, 3}, VGA_REGSET_END};
136
137 static const struct vga_regset s3_line_compare_regs[] = {{0x18, 0, 7}, {0x07, 4, 4}, {0x09, 6, 6}, {0x5E, 6, 6}, VGA_REGSET_END};
138 static const struct vga_regset s3_start_address_regs[] = {{0x0d, 0, 7}, {0x0c, 0, 7}, {0x69, 0, 4}, VGA_REGSET_END};
139 static const struct vga_regset s3_offset_regs[] = {{0x13, 0, 7}, {0x51, 4, 5}, VGA_REGSET_END}; /* set 0x43 bit 2 to 0 */
140
141 static const struct vga_regset s3_dtpc_regs[] = {{0x3B, 0, 7}, {0x5D, 6, 6}, VGA_REGSET_END};
142
143 static const struct svga_timing_regs s3_timing_regs = {
144 s3_h_total_regs, s3_h_display_regs, s3_h_blank_start_regs,
145 s3_h_blank_end_regs, s3_h_sync_start_regs, s3_h_sync_end_regs,
146 s3_v_total_regs, s3_v_display_regs, s3_v_blank_start_regs,
147 s3_v_blank_end_regs, s3_v_sync_start_regs, s3_v_sync_end_regs,
148 };
149
150
151 /* ------------------------------------------------------------------------- */
152
153 /* Module parameters */
154
155
156 static char *mode_option;
157
158 #ifdef CONFIG_MTRR
159 static int mtrr = 1;
160 #endif
161
162 static int fasttext = 1;
163
164
165 MODULE_AUTHOR("(c) 2006-2007 Ondrej Zajicek <santiago@crfreenet.org>");
166 MODULE_LICENSE("GPL");
167 MODULE_DESCRIPTION("fbdev driver for S3 Trio/Virge");
168
169 module_param(mode_option, charp, 0444);
170 MODULE_PARM_DESC(mode_option, "Default video mode ('640x480-8@60', etc)");
171 module_param_named(mode, mode_option, charp, 0444);
172 MODULE_PARM_DESC(mode, "Default video mode ('640x480-8@60', etc) (deprecated)");
173
174 #ifdef CONFIG_MTRR
175 module_param(mtrr, int, 0444);
176 MODULE_PARM_DESC(mtrr, "Enable write-combining with MTRR (1=enable, 0=disable, default=1)");
177 #endif
178
179 module_param(fasttext, int, 0644);
180 MODULE_PARM_DESC(fasttext, "Enable S3 fast text mode (1=enable, 0=disable, default=1)");
181
182
183 /* ------------------------------------------------------------------------- */
184
185 #ifdef CONFIG_FB_S3_DDC
186
187 #define DDC_REG 0xaa /* Trio 3D/1X/2X */
188 #define DDC_MMIO_REG 0xff20 /* all other chips */
189 #define DDC_SCL_OUT (1 << 0)
190 #define DDC_SDA_OUT (1 << 1)
191 #define DDC_SCL_IN (1 << 2)
192 #define DDC_SDA_IN (1 << 3)
193 #define DDC_DRIVE_EN (1 << 4)
194
195 static bool s3fb_ddc_needs_mmio(int chip)
196 {
197 return !(chip == CHIP_360_TRIO3D_1X ||
198 chip == CHIP_362_TRIO3D_2X ||
199 chip == CHIP_368_TRIO3D_2X);
200 }
201
202 static u8 s3fb_ddc_read(struct s3fb_info *par)
203 {
204 if (s3fb_ddc_needs_mmio(par->chip))
205 return readb(par->mmio + DDC_MMIO_REG);
206 else
207 return vga_rcrt(par->state.vgabase, DDC_REG);
208 }
209
210 static void s3fb_ddc_write(struct s3fb_info *par, u8 val)
211 {
212 if (s3fb_ddc_needs_mmio(par->chip))
213 writeb(val, par->mmio + DDC_MMIO_REG);
214 else
215 vga_wcrt(par->state.vgabase, DDC_REG, val);
216 }
217
218 static void s3fb_ddc_setscl(void *data, int val)
219 {
220 struct s3fb_info *par = data;
221 unsigned char reg;
222
223 reg = s3fb_ddc_read(par) | DDC_DRIVE_EN;
224 if (val)
225 reg |= DDC_SCL_OUT;
226 else
227 reg &= ~DDC_SCL_OUT;
228 s3fb_ddc_write(par, reg);
229 }
230
231 static void s3fb_ddc_setsda(void *data, int val)
232 {
233 struct s3fb_info *par = data;
234 unsigned char reg;
235
236 reg = s3fb_ddc_read(par) | DDC_DRIVE_EN;
237 if (val)
238 reg |= DDC_SDA_OUT;
239 else
240 reg &= ~DDC_SDA_OUT;
241 s3fb_ddc_write(par, reg);
242 }
243
244 static int s3fb_ddc_getscl(void *data)
245 {
246 struct s3fb_info *par = data;
247
248 return !!(s3fb_ddc_read(par) & DDC_SCL_IN);
249 }
250
251 static int s3fb_ddc_getsda(void *data)
252 {
253 struct s3fb_info *par = data;
254
255 return !!(s3fb_ddc_read(par) & DDC_SDA_IN);
256 }
257
258 static int s3fb_setup_ddc_bus(struct fb_info *info)
259 {
260 struct s3fb_info *par = info->par;
261
262 strlcpy(par->ddc_adapter.name, info->fix.id,
263 sizeof(par->ddc_adapter.name));
264 par->ddc_adapter.owner = THIS_MODULE;
265 par->ddc_adapter.class = I2C_CLASS_DDC;
266 par->ddc_adapter.algo_data = &par->ddc_algo;
267 par->ddc_adapter.dev.parent = info->device;
268 par->ddc_algo.setsda = s3fb_ddc_setsda;
269 par->ddc_algo.setscl = s3fb_ddc_setscl;
270 par->ddc_algo.getsda = s3fb_ddc_getsda;
271 par->ddc_algo.getscl = s3fb_ddc_getscl;
272 par->ddc_algo.udelay = 10;
273 par->ddc_algo.timeout = 20;
274 par->ddc_algo.data = par;
275
276 i2c_set_adapdata(&par->ddc_adapter, par);
277
278 /*
279 * some Virge cards have external MUX to switch chip I2C bus between
280 * DDC and extension pins - switch it do DDC
281 */
282 /* vga_wseq(par->state.vgabase, 0x08, 0x06); - not needed, already unlocked */
283 if (par->chip == CHIP_357_VIRGE_GX2 ||
284 par->chip == CHIP_359_VIRGE_GX2P ||
285 par->chip == CHIP_260_VIRGE_MX)
286 svga_wseq_mask(par->state.vgabase, 0x0d, 0x01, 0x03);
287 else
288 svga_wseq_mask(par->state.vgabase, 0x0d, 0x00, 0x03);
289 /* some Virge need this or the DDC is ignored */
290 svga_wcrt_mask(par->state.vgabase, 0x5c, 0x03, 0x03);
291
292 return i2c_bit_add_bus(&par->ddc_adapter);
293 }
294 #endif /* CONFIG_FB_S3_DDC */
295
296
297 /* ------------------------------------------------------------------------- */
298
299 /* Set font in S3 fast text mode */
300
301 static void s3fb_settile_fast(struct fb_info *info, struct fb_tilemap *map)
302 {
303 const u8 *font = map->data;
304 u8 __iomem *fb = (u8 __iomem *) info->screen_base;
305 int i, c;
306
307 if ((map->width != 8) || (map->height != 16) ||
308 (map->depth != 1) || (map->length != 256)) {
309 fb_err(info, "unsupported font parameters: width %d, height %d, depth %d, length %d\n",
310 map->width, map->height, map->depth, map->length);
311 return;
312 }
313
314 fb += 2;
315 for (i = 0; i < map->height; i++) {
316 for (c = 0; c < map->length; c++) {
317 fb_writeb(font[c * map->height + i], fb + c * 4);
318 }
319 fb += 1024;
320 }
321 }
322
323 static void s3fb_tilecursor(struct fb_info *info, struct fb_tilecursor *cursor)
324 {
325 struct s3fb_info *par = info->par;
326
327 svga_tilecursor(par->state.vgabase, info, cursor);
328 }
329
330 static struct fb_tile_ops s3fb_tile_ops = {
331 .fb_settile = svga_settile,
332 .fb_tilecopy = svga_tilecopy,
333 .fb_tilefill = svga_tilefill,
334 .fb_tileblit = svga_tileblit,
335 .fb_tilecursor = s3fb_tilecursor,
336 .fb_get_tilemax = svga_get_tilemax,
337 };
338
339 static struct fb_tile_ops s3fb_fast_tile_ops = {
340 .fb_settile = s3fb_settile_fast,
341 .fb_tilecopy = svga_tilecopy,
342 .fb_tilefill = svga_tilefill,
343 .fb_tileblit = svga_tileblit,
344 .fb_tilecursor = s3fb_tilecursor,
345 .fb_get_tilemax = svga_get_tilemax,
346 };
347
348
349 /* ------------------------------------------------------------------------- */
350
351 /* image data is MSB-first, fb structure is MSB-first too */
352 static inline u32 expand_color(u32 c)
353 {
354 return ((c & 1) | ((c & 2) << 7) | ((c & 4) << 14) | ((c & 8) << 21)) * 0xFF;
355 }
356
357 /* s3fb_iplan_imageblit silently assumes that almost everything is 8-pixel aligned */
358 static void s3fb_iplan_imageblit(struct fb_info *info, const struct fb_image *image)
359 {
360 u32 fg = expand_color(image->fg_color);
361 u32 bg = expand_color(image->bg_color);
362 const u8 *src1, *src;
363 u8 __iomem *dst1;
364 u32 __iomem *dst;
365 u32 val;
366 int x, y;
367
368 src1 = image->data;
369 dst1 = info->screen_base + (image->dy * info->fix.line_length)
370 + ((image->dx / 8) * 4);
371
372 for (y = 0; y < image->height; y++) {
373 src = src1;
374 dst = (u32 __iomem *) dst1;
375 for (x = 0; x < image->width; x += 8) {
376 val = *(src++) * 0x01010101;
377 val = (val & fg) | (~val & bg);
378 fb_writel(val, dst++);
379 }
380 src1 += image->width / 8;
381 dst1 += info->fix.line_length;
382 }
383
384 }
385
386 /* s3fb_iplan_fillrect silently assumes that almost everything is 8-pixel aligned */
387 static void s3fb_iplan_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
388 {
389 u32 fg = expand_color(rect->color);
390 u8 __iomem *dst1;
391 u32 __iomem *dst;
392 int x, y;
393
394 dst1 = info->screen_base + (rect->dy * info->fix.line_length)
395 + ((rect->dx / 8) * 4);
396
397 for (y = 0; y < rect->height; y++) {
398 dst = (u32 __iomem *) dst1;
399 for (x = 0; x < rect->width; x += 8) {
400 fb_writel(fg, dst++);
401 }
402 dst1 += info->fix.line_length;
403 }
404 }
405
406
407 /* image data is MSB-first, fb structure is high-nibble-in-low-byte-first */
408 static inline u32 expand_pixel(u32 c)
409 {
410 return (((c & 1) << 24) | ((c & 2) << 27) | ((c & 4) << 14) | ((c & 8) << 17) |
411 ((c & 16) << 4) | ((c & 32) << 7) | ((c & 64) >> 6) | ((c & 128) >> 3)) * 0xF;
412 }
413
414 /* s3fb_cfb4_imageblit silently assumes that almost everything is 8-pixel aligned */
415 static void s3fb_cfb4_imageblit(struct fb_info *info, const struct fb_image *image)
416 {
417 u32 fg = image->fg_color * 0x11111111;
418 u32 bg = image->bg_color * 0x11111111;
419 const u8 *src1, *src;
420 u8 __iomem *dst1;
421 u32 __iomem *dst;
422 u32 val;
423 int x, y;
424
425 src1 = image->data;
426 dst1 = info->screen_base + (image->dy * info->fix.line_length)
427 + ((image->dx / 8) * 4);
428
429 for (y = 0; y < image->height; y++) {
430 src = src1;
431 dst = (u32 __iomem *) dst1;
432 for (x = 0; x < image->width; x += 8) {
433 val = expand_pixel(*(src++));
434 val = (val & fg) | (~val & bg);
435 fb_writel(val, dst++);
436 }
437 src1 += image->width / 8;
438 dst1 += info->fix.line_length;
439 }
440 }
441
442 static void s3fb_imageblit(struct fb_info *info, const struct fb_image *image)
443 {
444 if ((info->var.bits_per_pixel == 4) && (image->depth == 1)
445 && ((image->width % 8) == 0) && ((image->dx % 8) == 0)) {
446 if (info->fix.type == FB_TYPE_INTERLEAVED_PLANES)
447 s3fb_iplan_imageblit(info, image);
448 else
449 s3fb_cfb4_imageblit(info, image);
450 } else
451 cfb_imageblit(info, image);
452 }
453
454 static void s3fb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
455 {
456 if ((info->var.bits_per_pixel == 4)
457 && ((rect->width % 8) == 0) && ((rect->dx % 8) == 0)
458 && (info->fix.type == FB_TYPE_INTERLEAVED_PLANES))
459 s3fb_iplan_fillrect(info, rect);
460 else
461 cfb_fillrect(info, rect);
462 }
463
464
465
466 /* ------------------------------------------------------------------------- */
467
468
469 static void s3_set_pixclock(struct fb_info *info, u32 pixclock)
470 {
471 struct s3fb_info *par = info->par;
472 u16 m, n, r;
473 u8 regval;
474 int rv;
475
476 rv = svga_compute_pll((par->chip == CHIP_365_TRIO3D) ? &s3_trio3d_pll : &s3_pll,
477 1000000000 / pixclock, &m, &n, &r, info->node);
478 if (rv < 0) {
479 fb_err(info, "cannot set requested pixclock, keeping old value\n");
480 return;
481 }
482
483 /* Set VGA misc register */
484 regval = vga_r(par->state.vgabase, VGA_MIS_R);
485 vga_w(par->state.vgabase, VGA_MIS_W, regval | VGA_MIS_ENB_PLL_LOAD);
486
487 /* Set S3 clock registers */
488 if (par->chip == CHIP_357_VIRGE_GX2 ||
489 par->chip == CHIP_359_VIRGE_GX2P ||
490 par->chip == CHIP_360_TRIO3D_1X ||
491 par->chip == CHIP_362_TRIO3D_2X ||
492 par->chip == CHIP_368_TRIO3D_2X ||
493 par->chip == CHIP_260_VIRGE_MX) {
494 vga_wseq(par->state.vgabase, 0x12, (n - 2) | ((r & 3) << 6)); /* n and two bits of r */
495 vga_wseq(par->state.vgabase, 0x29, r >> 2); /* remaining highest bit of r */
496 } else
497 vga_wseq(par->state.vgabase, 0x12, (n - 2) | (r << 5));
498 vga_wseq(par->state.vgabase, 0x13, m - 2);
499
500 udelay(1000);
501
502 /* Activate clock - write 0, 1, 0 to seq/15 bit 5 */
503 regval = vga_rseq (par->state.vgabase, 0x15); /* | 0x80; */
504 vga_wseq(par->state.vgabase, 0x15, regval & ~(1<<5));
505 vga_wseq(par->state.vgabase, 0x15, regval | (1<<5));
506 vga_wseq(par->state.vgabase, 0x15, regval & ~(1<<5));
507 }
508
509
510 /* Open framebuffer */
511
512 static int s3fb_open(struct fb_info *info, int user)
513 {
514 struct s3fb_info *par = info->par;
515
516 mutex_lock(&(par->open_lock));
517 if (par->ref_count == 0) {
518 void __iomem *vgabase = par->state.vgabase;
519
520 memset(&(par->state), 0, sizeof(struct vgastate));
521 par->state.vgabase = vgabase;
522 par->state.flags = VGA_SAVE_MODE | VGA_SAVE_FONTS | VGA_SAVE_CMAP;
523 par->state.num_crtc = 0x70;
524 par->state.num_seq = 0x20;
525 save_vga(&(par->state));
526 }
527
528 par->ref_count++;
529 mutex_unlock(&(par->open_lock));
530
531 return 0;
532 }
533
534 /* Close framebuffer */
535
536 static int s3fb_release(struct fb_info *info, int user)
537 {
538 struct s3fb_info *par = info->par;
539
540 mutex_lock(&(par->open_lock));
541 if (par->ref_count == 0) {
542 mutex_unlock(&(par->open_lock));
543 return -EINVAL;
544 }
545
546 if (par->ref_count == 1)
547 restore_vga(&(par->state));
548
549 par->ref_count--;
550 mutex_unlock(&(par->open_lock));
551
552 return 0;
553 }
554
555 /* Validate passed in var */
556
557 static int s3fb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
558 {
559 struct s3fb_info *par = info->par;
560 int rv, mem, step;
561 u16 m, n, r;
562
563 /* Find appropriate format */
564 rv = svga_match_format (s3fb_formats, var, NULL);
565
566 /* 32bpp mode is not supported on VIRGE VX,
567 24bpp is not supported on others */
568 if ((par->chip == CHIP_988_VIRGE_VX) ? (rv == 7) : (rv == 6))
569 rv = -EINVAL;
570
571 if (rv < 0) {
572 fb_err(info, "unsupported mode requested\n");
573 return rv;
574 }
575
576 /* Do not allow to have real resoulution larger than virtual */
577 if (var->xres > var->xres_virtual)
578 var->xres_virtual = var->xres;
579
580 if (var->yres > var->yres_virtual)
581 var->yres_virtual = var->yres;
582
583 /* Round up xres_virtual to have proper alignment of lines */
584 step = s3fb_formats[rv].xresstep - 1;
585 var->xres_virtual = (var->xres_virtual+step) & ~step;
586
587 /* Check whether have enough memory */
588 mem = ((var->bits_per_pixel * var->xres_virtual) >> 3) * var->yres_virtual;
589 if (mem > info->screen_size) {
590 fb_err(info, "not enough framebuffer memory (%d kB requested , %u kB available)\n",
591 mem >> 10, (unsigned int) (info->screen_size >> 10));
592 return -EINVAL;
593 }
594
595 rv = svga_check_timings (&s3_timing_regs, var, info->node);
596 if (rv < 0) {
597 fb_err(info, "invalid timings requested\n");
598 return rv;
599 }
600
601 rv = svga_compute_pll(&s3_pll, PICOS2KHZ(var->pixclock), &m, &n, &r,
602 info->node);
603 if (rv < 0) {
604 fb_err(info, "invalid pixclock value requested\n");
605 return rv;
606 }
607
608 return 0;
609 }
610
611 /* Set video mode from par */
612
613 static int s3fb_set_par(struct fb_info *info)
614 {
615 struct s3fb_info *par = info->par;
616 u32 value, mode, hmul, offset_value, screen_size, multiplex, dbytes;
617 u32 bpp = info->var.bits_per_pixel;
618 u32 htotal, hsstart;
619
620 if (bpp != 0) {
621 info->fix.ypanstep = 1;
622 info->fix.line_length = (info->var.xres_virtual * bpp) / 8;
623
624 info->flags &= ~FBINFO_MISC_TILEBLITTING;
625 info->tileops = NULL;
626
627 /* in 4bpp supports 8p wide tiles only, any tiles otherwise */
628 info->pixmap.blit_x = (bpp == 4) ? (1 << (8 - 1)) : (~(u32)0);
629 info->pixmap.blit_y = ~(u32)0;
630
631 offset_value = (info->var.xres_virtual * bpp) / 64;
632 screen_size = info->var.yres_virtual * info->fix.line_length;
633 } else {
634 info->fix.ypanstep = 16;
635 info->fix.line_length = 0;
636
637 info->flags |= FBINFO_MISC_TILEBLITTING;
638 info->tileops = fasttext ? &s3fb_fast_tile_ops : &s3fb_tile_ops;
639
640 /* supports 8x16 tiles only */
641 info->pixmap.blit_x = 1 << (8 - 1);
642 info->pixmap.blit_y = 1 << (16 - 1);
643
644 offset_value = info->var.xres_virtual / 16;
645 screen_size = (info->var.xres_virtual * info->var.yres_virtual) / 64;
646 }
647
648 info->var.xoffset = 0;
649 info->var.yoffset = 0;
650 info->var.activate = FB_ACTIVATE_NOW;
651
652 /* Unlock registers */
653 vga_wcrt(par->state.vgabase, 0x38, 0x48);
654 vga_wcrt(par->state.vgabase, 0x39, 0xA5);
655 vga_wseq(par->state.vgabase, 0x08, 0x06);
656 svga_wcrt_mask(par->state.vgabase, 0x11, 0x00, 0x80);
657
658 /* Blank screen and turn off sync */
659 svga_wseq_mask(par->state.vgabase, 0x01, 0x20, 0x20);
660 svga_wcrt_mask(par->state.vgabase, 0x17, 0x00, 0x80);
661
662 /* Set default values */
663 svga_set_default_gfx_regs(par->state.vgabase);
664 svga_set_default_atc_regs(par->state.vgabase);
665 svga_set_default_seq_regs(par->state.vgabase);
666 svga_set_default_crt_regs(par->state.vgabase);
667 svga_wcrt_multi(par->state.vgabase, s3_line_compare_regs, 0xFFFFFFFF);
668 svga_wcrt_multi(par->state.vgabase, s3_start_address_regs, 0);
669
670 /* S3 specific initialization */
671 svga_wcrt_mask(par->state.vgabase, 0x58, 0x10, 0x10); /* enable linear framebuffer */
672 svga_wcrt_mask(par->state.vgabase, 0x31, 0x08, 0x08); /* enable sequencer access to framebuffer above 256 kB */
673
674 /* svga_wcrt_mask(par->state.vgabase, 0x33, 0x08, 0x08); */ /* DDR ? */
675 /* svga_wcrt_mask(par->state.vgabase, 0x43, 0x01, 0x01); */ /* DDR ? */
676 svga_wcrt_mask(par->state.vgabase, 0x33, 0x00, 0x08); /* no DDR ? */
677 svga_wcrt_mask(par->state.vgabase, 0x43, 0x00, 0x01); /* no DDR ? */
678
679 svga_wcrt_mask(par->state.vgabase, 0x5D, 0x00, 0x28); /* Clear strange HSlen bits */
680
681 /* svga_wcrt_mask(par->state.vgabase, 0x58, 0x03, 0x03); */
682
683 /* svga_wcrt_mask(par->state.vgabase, 0x53, 0x12, 0x13); */ /* enable MMIO */
684 /* svga_wcrt_mask(par->state.vgabase, 0x40, 0x08, 0x08); */ /* enable write buffer */
685
686
687 /* Set the offset register */
688 fb_dbg(info, "offset register : %d\n", offset_value);
689 svga_wcrt_multi(par->state.vgabase, s3_offset_regs, offset_value);
690
691 if (par->chip != CHIP_357_VIRGE_GX2 &&
692 par->chip != CHIP_359_VIRGE_GX2P &&
693 par->chip != CHIP_360_TRIO3D_1X &&
694 par->chip != CHIP_362_TRIO3D_2X &&
695 par->chip != CHIP_368_TRIO3D_2X &&
696 par->chip != CHIP_260_VIRGE_MX) {
697 vga_wcrt(par->state.vgabase, 0x54, 0x18); /* M parameter */
698 vga_wcrt(par->state.vgabase, 0x60, 0xff); /* N parameter */
699 vga_wcrt(par->state.vgabase, 0x61, 0xff); /* L parameter */
700 vga_wcrt(par->state.vgabase, 0x62, 0xff); /* L parameter */
701 }
702
703 vga_wcrt(par->state.vgabase, 0x3A, 0x35);
704 svga_wattr(par->state.vgabase, 0x33, 0x00);
705
706 if (info->var.vmode & FB_VMODE_DOUBLE)
707 svga_wcrt_mask(par->state.vgabase, 0x09, 0x80, 0x80);
708 else
709 svga_wcrt_mask(par->state.vgabase, 0x09, 0x00, 0x80);
710
711 if (info->var.vmode & FB_VMODE_INTERLACED)
712 svga_wcrt_mask(par->state.vgabase, 0x42, 0x20, 0x20);
713 else
714 svga_wcrt_mask(par->state.vgabase, 0x42, 0x00, 0x20);
715
716 /* Disable hardware graphics cursor */
717 svga_wcrt_mask(par->state.vgabase, 0x45, 0x00, 0x01);
718 /* Disable Streams engine */
719 svga_wcrt_mask(par->state.vgabase, 0x67, 0x00, 0x0C);
720
721 mode = svga_match_format(s3fb_formats, &(info->var), &(info->fix));
722
723 /* S3 virge DX hack */
724 if (par->chip == CHIP_375_VIRGE_DX) {
725 vga_wcrt(par->state.vgabase, 0x86, 0x80);
726 vga_wcrt(par->state.vgabase, 0x90, 0x00);
727 }
728
729 /* S3 virge VX hack */
730 if (par->chip == CHIP_988_VIRGE_VX) {
731 vga_wcrt(par->state.vgabase, 0x50, 0x00);
732 vga_wcrt(par->state.vgabase, 0x67, 0x50);
733 msleep(10); /* screen remains blank sometimes without this */
734 vga_wcrt(par->state.vgabase, 0x63, (mode <= 2) ? 0x90 : 0x09);
735 vga_wcrt(par->state.vgabase, 0x66, 0x90);
736 }
737
738 if (par->chip == CHIP_357_VIRGE_GX2 ||
739 par->chip == CHIP_359_VIRGE_GX2P ||
740 par->chip == CHIP_360_TRIO3D_1X ||
741 par->chip == CHIP_362_TRIO3D_2X ||
742 par->chip == CHIP_368_TRIO3D_2X ||
743 par->chip == CHIP_365_TRIO3D ||
744 par->chip == CHIP_375_VIRGE_DX ||
745 par->chip == CHIP_385_VIRGE_GX ||
746 par->chip == CHIP_260_VIRGE_MX) {
747 dbytes = info->var.xres * ((bpp+7)/8);
748 vga_wcrt(par->state.vgabase, 0x91, (dbytes + 7) / 8);
749 vga_wcrt(par->state.vgabase, 0x90, (((dbytes + 7) / 8) >> 8) | 0x80);
750
751 vga_wcrt(par->state.vgabase, 0x66, 0x81);
752 }
753
754 if (par->chip == CHIP_357_VIRGE_GX2 ||
755 par->chip == CHIP_359_VIRGE_GX2P ||
756 par->chip == CHIP_360_TRIO3D_1X ||
757 par->chip == CHIP_362_TRIO3D_2X ||
758 par->chip == CHIP_368_TRIO3D_2X ||
759 par->chip == CHIP_260_VIRGE_MX)
760 vga_wcrt(par->state.vgabase, 0x34, 0x00);
761 else /* enable Data Transfer Position Control (DTPC) */
762 vga_wcrt(par->state.vgabase, 0x34, 0x10);
763
764 svga_wcrt_mask(par->state.vgabase, 0x31, 0x00, 0x40);
765 multiplex = 0;
766 hmul = 1;
767
768 /* Set mode-specific register values */
769 switch (mode) {
770 case 0:
771 fb_dbg(info, "text mode\n");
772 svga_set_textmode_vga_regs(par->state.vgabase);
773
774 /* Set additional registers like in 8-bit mode */
775 svga_wcrt_mask(par->state.vgabase, 0x50, 0x00, 0x30);
776 svga_wcrt_mask(par->state.vgabase, 0x67, 0x00, 0xF0);
777
778 /* Disable enhanced mode */
779 svga_wcrt_mask(par->state.vgabase, 0x3A, 0x00, 0x30);
780
781 if (fasttext) {
782 fb_dbg(info, "high speed text mode set\n");
783 svga_wcrt_mask(par->state.vgabase, 0x31, 0x40, 0x40);
784 }
785 break;
786 case 1:
787 fb_dbg(info, "4 bit pseudocolor\n");
788 vga_wgfx(par->state.vgabase, VGA_GFX_MODE, 0x40);
789
790 /* Set additional registers like in 8-bit mode */
791 svga_wcrt_mask(par->state.vgabase, 0x50, 0x00, 0x30);
792 svga_wcrt_mask(par->state.vgabase, 0x67, 0x00, 0xF0);
793
794 /* disable enhanced mode */
795 svga_wcrt_mask(par->state.vgabase, 0x3A, 0x00, 0x30);
796 break;
797 case 2:
798 fb_dbg(info, "4 bit pseudocolor, planar\n");
799
800 /* Set additional registers like in 8-bit mode */
801 svga_wcrt_mask(par->state.vgabase, 0x50, 0x00, 0x30);
802 svga_wcrt_mask(par->state.vgabase, 0x67, 0x00, 0xF0);
803
804 /* disable enhanced mode */
805 svga_wcrt_mask(par->state.vgabase, 0x3A, 0x00, 0x30);
806 break;
807 case 3:
808 fb_dbg(info, "8 bit pseudocolor\n");
809 svga_wcrt_mask(par->state.vgabase, 0x50, 0x00, 0x30);
810 if (info->var.pixclock > 20000 ||
811 par->chip == CHIP_357_VIRGE_GX2 ||
812 par->chip == CHIP_359_VIRGE_GX2P ||
813 par->chip == CHIP_360_TRIO3D_1X ||
814 par->chip == CHIP_362_TRIO3D_2X ||
815 par->chip == CHIP_368_TRIO3D_2X ||
816 par->chip == CHIP_260_VIRGE_MX)
817 svga_wcrt_mask(par->state.vgabase, 0x67, 0x00, 0xF0);
818 else {
819 svga_wcrt_mask(par->state.vgabase, 0x67, 0x10, 0xF0);
820 multiplex = 1;
821 }
822 break;
823 case 4:
824 fb_dbg(info, "5/5/5 truecolor\n");
825 if (par->chip == CHIP_988_VIRGE_VX) {
826 if (info->var.pixclock > 20000)
827 svga_wcrt_mask(par->state.vgabase, 0x67, 0x20, 0xF0);
828 else
829 svga_wcrt_mask(par->state.vgabase, 0x67, 0x30, 0xF0);
830 } else if (par->chip == CHIP_365_TRIO3D) {
831 svga_wcrt_mask(par->state.vgabase, 0x50, 0x10, 0x30);
832 if (info->var.pixclock > 8695) {
833 svga_wcrt_mask(par->state.vgabase, 0x67, 0x30, 0xF0);
834 hmul = 2;
835 } else {
836 svga_wcrt_mask(par->state.vgabase, 0x67, 0x20, 0xF0);
837 multiplex = 1;
838 }
839 } else {
840 svga_wcrt_mask(par->state.vgabase, 0x50, 0x10, 0x30);
841 svga_wcrt_mask(par->state.vgabase, 0x67, 0x30, 0xF0);
842 if (par->chip != CHIP_357_VIRGE_GX2 &&
843 par->chip != CHIP_359_VIRGE_GX2P &&
844 par->chip != CHIP_360_TRIO3D_1X &&
845 par->chip != CHIP_362_TRIO3D_2X &&
846 par->chip != CHIP_368_TRIO3D_2X &&
847 par->chip != CHIP_260_VIRGE_MX)
848 hmul = 2;
849 }
850 break;
851 case 5:
852 fb_dbg(info, "5/6/5 truecolor\n");
853 if (par->chip == CHIP_988_VIRGE_VX) {
854 if (info->var.pixclock > 20000)
855 svga_wcrt_mask(par->state.vgabase, 0x67, 0x40, 0xF0);
856 else
857 svga_wcrt_mask(par->state.vgabase, 0x67, 0x50, 0xF0);
858 } else if (par->chip == CHIP_365_TRIO3D) {
859 svga_wcrt_mask(par->state.vgabase, 0x50, 0x10, 0x30);
860 if (info->var.pixclock > 8695) {
861 svga_wcrt_mask(par->state.vgabase, 0x67, 0x50, 0xF0);
862 hmul = 2;
863 } else {
864 svga_wcrt_mask(par->state.vgabase, 0x67, 0x40, 0xF0);
865 multiplex = 1;
866 }
867 } else {
868 svga_wcrt_mask(par->state.vgabase, 0x50, 0x10, 0x30);
869 svga_wcrt_mask(par->state.vgabase, 0x67, 0x50, 0xF0);
870 if (par->chip != CHIP_357_VIRGE_GX2 &&
871 par->chip != CHIP_359_VIRGE_GX2P &&
872 par->chip != CHIP_360_TRIO3D_1X &&
873 par->chip != CHIP_362_TRIO3D_2X &&
874 par->chip != CHIP_368_TRIO3D_2X &&
875 par->chip != CHIP_260_VIRGE_MX)
876 hmul = 2;
877 }
878 break;
879 case 6:
880 /* VIRGE VX case */
881 fb_dbg(info, "8/8/8 truecolor\n");
882 svga_wcrt_mask(par->state.vgabase, 0x67, 0xD0, 0xF0);
883 break;
884 case 7:
885 fb_dbg(info, "8/8/8/8 truecolor\n");
886 svga_wcrt_mask(par->state.vgabase, 0x50, 0x30, 0x30);
887 svga_wcrt_mask(par->state.vgabase, 0x67, 0xD0, 0xF0);
888 break;
889 default:
890 fb_err(info, "unsupported mode - bug\n");
891 return -EINVAL;
892 }
893
894 if (par->chip != CHIP_988_VIRGE_VX) {
895 svga_wseq_mask(par->state.vgabase, 0x15, multiplex ? 0x10 : 0x00, 0x10);
896 svga_wseq_mask(par->state.vgabase, 0x18, multiplex ? 0x80 : 0x00, 0x80);
897 }
898
899 s3_set_pixclock(info, info->var.pixclock);
900 svga_set_timings(par->state.vgabase, &s3_timing_regs, &(info->var), hmul, 1,
901 (info->var.vmode & FB_VMODE_DOUBLE) ? 2 : 1,
902 (info->var.vmode & FB_VMODE_INTERLACED) ? 2 : 1,
903 hmul, info->node);
904
905 /* Set interlaced mode start/end register */
906 htotal = info->var.xres + info->var.left_margin + info->var.right_margin + info->var.hsync_len;
907 htotal = ((htotal * hmul) / 8) - 5;
908 vga_wcrt(par->state.vgabase, 0x3C, (htotal + 1) / 2);
909
910 /* Set Data Transfer Position */
911 hsstart = ((info->var.xres + info->var.right_margin) * hmul) / 8;
912 /* + 2 is needed for Virge/VX, does no harm on other cards */
913 value = clamp((htotal + hsstart + 1) / 2 + 2, hsstart + 4, htotal + 1);
914 svga_wcrt_multi(par->state.vgabase, s3_dtpc_regs, value);
915
916 memset_io(info->screen_base, 0x00, screen_size);
917 /* Device and screen back on */
918 svga_wcrt_mask(par->state.vgabase, 0x17, 0x80, 0x80);
919 svga_wseq_mask(par->state.vgabase, 0x01, 0x00, 0x20);
920
921 return 0;
922 }
923
924 /* Set a colour register */
925
926 static int s3fb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
927 u_int transp, struct fb_info *fb)
928 {
929 switch (fb->var.bits_per_pixel) {
930 case 0:
931 case 4:
932 if (regno >= 16)
933 return -EINVAL;
934
935 if ((fb->var.bits_per_pixel == 4) &&
936 (fb->var.nonstd == 0)) {
937 outb(0xF0, VGA_PEL_MSK);
938 outb(regno*16, VGA_PEL_IW);
939 } else {
940 outb(0x0F, VGA_PEL_MSK);
941 outb(regno, VGA_PEL_IW);
942 }
943 outb(red >> 10, VGA_PEL_D);
944 outb(green >> 10, VGA_PEL_D);
945 outb(blue >> 10, VGA_PEL_D);
946 break;
947 case 8:
948 if (regno >= 256)
949 return -EINVAL;
950
951 outb(0xFF, VGA_PEL_MSK);
952 outb(regno, VGA_PEL_IW);
953 outb(red >> 10, VGA_PEL_D);
954 outb(green >> 10, VGA_PEL_D);
955 outb(blue >> 10, VGA_PEL_D);
956 break;
957 case 16:
958 if (regno >= 16)
959 return 0;
960
961 if (fb->var.green.length == 5)
962 ((u32*)fb->pseudo_palette)[regno] = ((red & 0xF800) >> 1) |
963 ((green & 0xF800) >> 6) | ((blue & 0xF800) >> 11);
964 else if (fb->var.green.length == 6)
965 ((u32*)fb->pseudo_palette)[regno] = (red & 0xF800) |
966 ((green & 0xFC00) >> 5) | ((blue & 0xF800) >> 11);
967 else return -EINVAL;
968 break;
969 case 24:
970 case 32:
971 if (regno >= 16)
972 return 0;
973
974 ((u32*)fb->pseudo_palette)[regno] = ((red & 0xFF00) << 8) |
975 (green & 0xFF00) | ((blue & 0xFF00) >> 8);
976 break;
977 default:
978 return -EINVAL;
979 }
980
981 return 0;
982 }
983
984
985 /* Set the display blanking state */
986
987 static int s3fb_blank(int blank_mode, struct fb_info *info)
988 {
989 struct s3fb_info *par = info->par;
990
991 switch (blank_mode) {
992 case FB_BLANK_UNBLANK:
993 fb_dbg(info, "unblank\n");
994 svga_wcrt_mask(par->state.vgabase, 0x56, 0x00, 0x06);
995 svga_wseq_mask(par->state.vgabase, 0x01, 0x00, 0x20);
996 break;
997 case FB_BLANK_NORMAL:
998 fb_dbg(info, "blank\n");
999 svga_wcrt_mask(par->state.vgabase, 0x56, 0x00, 0x06);
1000 svga_wseq_mask(par->state.vgabase, 0x01, 0x20, 0x20);
1001 break;
1002 case FB_BLANK_HSYNC_SUSPEND:
1003 fb_dbg(info, "hsync\n");
1004 svga_wcrt_mask(par->state.vgabase, 0x56, 0x02, 0x06);
1005 svga_wseq_mask(par->state.vgabase, 0x01, 0x20, 0x20);
1006 break;
1007 case FB_BLANK_VSYNC_SUSPEND:
1008 fb_dbg(info, "vsync\n");
1009 svga_wcrt_mask(par->state.vgabase, 0x56, 0x04, 0x06);
1010 svga_wseq_mask(par->state.vgabase, 0x01, 0x20, 0x20);
1011 break;
1012 case FB_BLANK_POWERDOWN:
1013 fb_dbg(info, "sync down\n");
1014 svga_wcrt_mask(par->state.vgabase, 0x56, 0x06, 0x06);
1015 svga_wseq_mask(par->state.vgabase, 0x01, 0x20, 0x20);
1016 break;
1017 }
1018
1019 return 0;
1020 }
1021
1022
1023 /* Pan the display */
1024
1025 static int s3fb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
1026 {
1027 struct s3fb_info *par = info->par;
1028 unsigned int offset;
1029
1030 /* Calculate the offset */
1031 if (info->var.bits_per_pixel == 0) {
1032 offset = (var->yoffset / 16) * (info->var.xres_virtual / 2)
1033 + (var->xoffset / 2);
1034 offset = offset >> 2;
1035 } else {
1036 offset = (var->yoffset * info->fix.line_length) +
1037 (var->xoffset * info->var.bits_per_pixel / 8);
1038 offset = offset >> 2;
1039 }
1040
1041 /* Set the offset */
1042 svga_wcrt_multi(par->state.vgabase, s3_start_address_regs, offset);
1043
1044 return 0;
1045 }
1046
1047 /* ------------------------------------------------------------------------- */
1048
1049 /* Frame buffer operations */
1050
1051 static struct fb_ops s3fb_ops = {
1052 .owner = THIS_MODULE,
1053 .fb_open = s3fb_open,
1054 .fb_release = s3fb_release,
1055 .fb_check_var = s3fb_check_var,
1056 .fb_set_par = s3fb_set_par,
1057 .fb_setcolreg = s3fb_setcolreg,
1058 .fb_blank = s3fb_blank,
1059 .fb_pan_display = s3fb_pan_display,
1060 .fb_fillrect = s3fb_fillrect,
1061 .fb_copyarea = cfb_copyarea,
1062 .fb_imageblit = s3fb_imageblit,
1063 .fb_get_caps = svga_get_caps,
1064 };
1065
1066 /* ------------------------------------------------------------------------- */
1067
1068 static int s3_identification(struct s3fb_info *par)
1069 {
1070 int chip = par->chip;
1071
1072 if (chip == CHIP_XXX_TRIO) {
1073 u8 cr30 = vga_rcrt(par->state.vgabase, 0x30);
1074 u8 cr2e = vga_rcrt(par->state.vgabase, 0x2e);
1075 u8 cr2f = vga_rcrt(par->state.vgabase, 0x2f);
1076
1077 if ((cr30 == 0xE0) || (cr30 == 0xE1)) {
1078 if (cr2e == 0x10)
1079 return CHIP_732_TRIO32;
1080 if (cr2e == 0x11) {
1081 if (! (cr2f & 0x40))
1082 return CHIP_764_TRIO64;
1083 else
1084 return CHIP_765_TRIO64VP;
1085 }
1086 }
1087 }
1088
1089 if (chip == CHIP_XXX_TRIO64V2_DXGX) {
1090 u8 cr6f = vga_rcrt(par->state.vgabase, 0x6f);
1091
1092 if (! (cr6f & 0x01))
1093 return CHIP_775_TRIO64V2_DX;
1094 else
1095 return CHIP_785_TRIO64V2_GX;
1096 }
1097
1098 if (chip == CHIP_XXX_VIRGE_DXGX) {
1099 u8 cr6f = vga_rcrt(par->state.vgabase, 0x6f);
1100
1101 if (! (cr6f & 0x01))
1102 return CHIP_375_VIRGE_DX;
1103 else
1104 return CHIP_385_VIRGE_GX;
1105 }
1106
1107 if (chip == CHIP_36X_TRIO3D_1X_2X) {
1108 switch (vga_rcrt(par->state.vgabase, 0x2f)) {
1109 case 0x00:
1110 return CHIP_360_TRIO3D_1X;
1111 case 0x01:
1112 return CHIP_362_TRIO3D_2X;
1113 case 0x02:
1114 return CHIP_368_TRIO3D_2X;
1115 }
1116 }
1117
1118 return CHIP_UNKNOWN;
1119 }
1120
1121
1122 /* PCI probe */
1123
1124 static int s3_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
1125 {
1126 struct pci_bus_region bus_reg;
1127 struct resource vga_res;
1128 struct fb_info *info;
1129 struct s3fb_info *par;
1130 int rc;
1131 u8 regval, cr38, cr39;
1132 bool found = false;
1133
1134 /* Ignore secondary VGA device because there is no VGA arbitration */
1135 if (! svga_primary_device(dev)) {
1136 dev_info(&(dev->dev), "ignoring secondary device\n");
1137 return -ENODEV;
1138 }
1139
1140 /* Allocate and fill driver data structure */
1141 info = framebuffer_alloc(sizeof(struct s3fb_info), &(dev->dev));
1142 if (!info) {
1143 dev_err(&(dev->dev), "cannot allocate memory\n");
1144 return -ENOMEM;
1145 }
1146
1147 par = info->par;
1148 mutex_init(&par->open_lock);
1149
1150 info->flags = FBINFO_PARTIAL_PAN_OK | FBINFO_HWACCEL_YPAN;
1151 info->fbops = &s3fb_ops;
1152
1153 /* Prepare PCI device */
1154 rc = pci_enable_device(dev);
1155 if (rc < 0) {
1156 dev_err(info->device, "cannot enable PCI device\n");
1157 goto err_enable_device;
1158 }
1159
1160 rc = pci_request_regions(dev, "s3fb");
1161 if (rc < 0) {
1162 dev_err(info->device, "cannot reserve framebuffer region\n");
1163 goto err_request_regions;
1164 }
1165
1166
1167 info->fix.smem_start = pci_resource_start(dev, 0);
1168 info->fix.smem_len = pci_resource_len(dev, 0);
1169
1170 /* Map physical IO memory address into kernel space */
1171 info->screen_base = pci_iomap(dev, 0, 0);
1172 if (! info->screen_base) {
1173 rc = -ENOMEM;
1174 dev_err(info->device, "iomap for framebuffer failed\n");
1175 goto err_iomap;
1176 }
1177
1178 bus_reg.start = 0;
1179 bus_reg.end = 64 * 1024;
1180
1181 vga_res.flags = IORESOURCE_IO;
1182
1183 pcibios_bus_to_resource(dev, &vga_res, &bus_reg);
1184
1185 par->state.vgabase = (void __iomem *) vga_res.start;
1186
1187 /* Unlock regs */
1188 cr38 = vga_rcrt(par->state.vgabase, 0x38);
1189 cr39 = vga_rcrt(par->state.vgabase, 0x39);
1190 vga_wseq(par->state.vgabase, 0x08, 0x06);
1191 vga_wcrt(par->state.vgabase, 0x38, 0x48);
1192 vga_wcrt(par->state.vgabase, 0x39, 0xA5);
1193
1194 /* Identify chip type */
1195 par->chip = id->driver_data & CHIP_MASK;
1196 par->rev = vga_rcrt(par->state.vgabase, 0x2f);
1197 if (par->chip & CHIP_UNDECIDED_FLAG)
1198 par->chip = s3_identification(par);
1199
1200 /* Find how many physical memory there is on card */
1201 /* 0x36 register is accessible even if other registers are locked */
1202 regval = vga_rcrt(par->state.vgabase, 0x36);
1203 if (par->chip == CHIP_360_TRIO3D_1X ||
1204 par->chip == CHIP_362_TRIO3D_2X ||
1205 par->chip == CHIP_368_TRIO3D_2X ||
1206 par->chip == CHIP_365_TRIO3D) {
1207 switch ((regval & 0xE0) >> 5) {
1208 case 0: /* 8MB -- only 4MB usable for display */
1209 case 1: /* 4MB with 32-bit bus */
1210 case 2: /* 4MB */
1211 info->screen_size = 4 << 20;
1212 break;
1213 case 4: /* 2MB on 365 Trio3D */
1214 case 6: /* 2MB */
1215 info->screen_size = 2 << 20;
1216 break;
1217 }
1218 } else if (par->chip == CHIP_357_VIRGE_GX2 ||
1219 par->chip == CHIP_359_VIRGE_GX2P ||
1220 par->chip == CHIP_260_VIRGE_MX) {
1221 switch ((regval & 0xC0) >> 6) {
1222 case 1: /* 4MB */
1223 info->screen_size = 4 << 20;
1224 break;
1225 case 3: /* 2MB */
1226 info->screen_size = 2 << 20;
1227 break;
1228 }
1229 } else if (par->chip == CHIP_988_VIRGE_VX) {
1230 switch ((regval & 0x60) >> 5) {
1231 case 0: /* 2MB */
1232 info->screen_size = 2 << 20;
1233 break;
1234 case 1: /* 4MB */
1235 info->screen_size = 4 << 20;
1236 break;
1237 case 2: /* 6MB */
1238 info->screen_size = 6 << 20;
1239 break;
1240 case 3: /* 8MB */
1241 info->screen_size = 8 << 20;
1242 break;
1243 }
1244 /* off-screen memory */
1245 regval = vga_rcrt(par->state.vgabase, 0x37);
1246 switch ((regval & 0x60) >> 5) {
1247 case 1: /* 4MB */
1248 info->screen_size -= 4 << 20;
1249 break;
1250 case 2: /* 2MB */
1251 info->screen_size -= 2 << 20;
1252 break;
1253 }
1254 } else
1255 info->screen_size = s3_memsizes[regval >> 5] << 10;
1256 info->fix.smem_len = info->screen_size;
1257
1258 /* Find MCLK frequency */
1259 regval = vga_rseq(par->state.vgabase, 0x10);
1260 par->mclk_freq = ((vga_rseq(par->state.vgabase, 0x11) + 2) * 14318) / ((regval & 0x1F) + 2);
1261 par->mclk_freq = par->mclk_freq >> (regval >> 5);
1262
1263 /* Restore locks */
1264 vga_wcrt(par->state.vgabase, 0x38, cr38);
1265 vga_wcrt(par->state.vgabase, 0x39, cr39);
1266
1267 strcpy(info->fix.id, s3_names [par->chip]);
1268 info->fix.mmio_start = 0;
1269 info->fix.mmio_len = 0;
1270 info->fix.type = FB_TYPE_PACKED_PIXELS;
1271 info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
1272 info->fix.ypanstep = 0;
1273 info->fix.accel = FB_ACCEL_NONE;
1274 info->pseudo_palette = (void*) (par->pseudo_palette);
1275 info->var.bits_per_pixel = 8;
1276
1277 #ifdef CONFIG_FB_S3_DDC
1278 /* Enable MMIO if needed */
1279 if (s3fb_ddc_needs_mmio(par->chip)) {
1280 par->mmio = ioremap(info->fix.smem_start + MMIO_OFFSET, MMIO_SIZE);
1281 if (par->mmio)
1282 svga_wcrt_mask(par->state.vgabase, 0x53, 0x08, 0x08); /* enable MMIO */
1283 else
1284 dev_err(info->device, "unable to map MMIO at 0x%lx, disabling DDC",
1285 info->fix.smem_start + MMIO_OFFSET);
1286 }
1287 if (!s3fb_ddc_needs_mmio(par->chip) || par->mmio)
1288 if (s3fb_setup_ddc_bus(info) == 0) {
1289 u8 *edid = fb_ddc_read(&par->ddc_adapter);
1290 par->ddc_registered = true;
1291 if (edid) {
1292 fb_edid_to_monspecs(edid, &info->monspecs);
1293 kfree(edid);
1294 if (!info->monspecs.modedb)
1295 dev_err(info->device, "error getting mode database\n");
1296 else {
1297 const struct fb_videomode *m;
1298
1299 fb_videomode_to_modelist(info->monspecs.modedb,
1300 info->monspecs.modedb_len,
1301 &info->modelist);
1302 m = fb_find_best_display(&info->monspecs, &info->modelist);
1303 if (m) {
1304 fb_videomode_to_var(&info->var, m);
1305 /* fill all other info->var's fields */
1306 if (s3fb_check_var(&info->var, info) == 0)
1307 found = true;
1308 }
1309 }
1310 }
1311 }
1312 #endif
1313 if (!mode_option && !found)
1314 mode_option = "640x480-8@60";
1315
1316 /* Prepare startup mode */
1317 if (mode_option) {
1318 rc = fb_find_mode(&info->var, info, mode_option,
1319 info->monspecs.modedb, info->monspecs.modedb_len,
1320 NULL, info->var.bits_per_pixel);
1321 if (!rc || rc == 4) {
1322 rc = -EINVAL;
1323 dev_err(info->device, "mode %s not found\n", mode_option);
1324 fb_destroy_modedb(info->monspecs.modedb);
1325 info->monspecs.modedb = NULL;
1326 goto err_find_mode;
1327 }
1328 }
1329
1330 fb_destroy_modedb(info->monspecs.modedb);
1331 info->monspecs.modedb = NULL;
1332
1333 /* maximize virtual vertical size for fast scrolling */
1334 info->var.yres_virtual = info->fix.smem_len * 8 /
1335 (info->var.bits_per_pixel * info->var.xres_virtual);
1336 if (info->var.yres_virtual < info->var.yres) {
1337 dev_err(info->device, "virtual vertical size smaller than real\n");
1338 rc = -EINVAL;
1339 goto err_find_mode;
1340 }
1341
1342 rc = fb_alloc_cmap(&info->cmap, 256, 0);
1343 if (rc < 0) {
1344 dev_err(info->device, "cannot allocate colormap\n");
1345 goto err_alloc_cmap;
1346 }
1347
1348 rc = register_framebuffer(info);
1349 if (rc < 0) {
1350 dev_err(info->device, "cannot register framebuffer\n");
1351 goto err_reg_fb;
1352 }
1353
1354 fb_info(info, "%s on %s, %d MB RAM, %d MHz MCLK\n",
1355 info->fix.id, pci_name(dev),
1356 info->fix.smem_len >> 20, (par->mclk_freq + 500) / 1000);
1357
1358 if (par->chip == CHIP_UNKNOWN)
1359 fb_info(info, "unknown chip, CR2D=%x, CR2E=%x, CRT2F=%x, CRT30=%x\n",
1360 vga_rcrt(par->state.vgabase, 0x2d),
1361 vga_rcrt(par->state.vgabase, 0x2e),
1362 vga_rcrt(par->state.vgabase, 0x2f),
1363 vga_rcrt(par->state.vgabase, 0x30));
1364
1365 /* Record a reference to the driver data */
1366 pci_set_drvdata(dev, info);
1367
1368 #ifdef CONFIG_MTRR
1369 if (mtrr) {
1370 par->mtrr_reg = -1;
1371 par->mtrr_reg = mtrr_add(info->fix.smem_start, info->fix.smem_len, MTRR_TYPE_WRCOMB, 1);
1372 }
1373 #endif
1374
1375 return 0;
1376
1377 /* Error handling */
1378 err_reg_fb:
1379 fb_dealloc_cmap(&info->cmap);
1380 err_alloc_cmap:
1381 err_find_mode:
1382 #ifdef CONFIG_FB_S3_DDC
1383 if (par->ddc_registered)
1384 i2c_del_adapter(&par->ddc_adapter);
1385 if (par->mmio)
1386 iounmap(par->mmio);
1387 #endif
1388 pci_iounmap(dev, info->screen_base);
1389 err_iomap:
1390 pci_release_regions(dev);
1391 err_request_regions:
1392 /* pci_disable_device(dev); */
1393 err_enable_device:
1394 framebuffer_release(info);
1395 return rc;
1396 }
1397
1398
1399 /* PCI remove */
1400
1401 static void s3_pci_remove(struct pci_dev *dev)
1402 {
1403 struct fb_info *info = pci_get_drvdata(dev);
1404 struct s3fb_info __maybe_unused *par = info->par;
1405
1406 if (info) {
1407
1408 #ifdef CONFIG_MTRR
1409 if (par->mtrr_reg >= 0) {
1410 mtrr_del(par->mtrr_reg, 0, 0);
1411 par->mtrr_reg = -1;
1412 }
1413 #endif
1414
1415 unregister_framebuffer(info);
1416 fb_dealloc_cmap(&info->cmap);
1417
1418 #ifdef CONFIG_FB_S3_DDC
1419 if (par->ddc_registered)
1420 i2c_del_adapter(&par->ddc_adapter);
1421 if (par->mmio)
1422 iounmap(par->mmio);
1423 #endif
1424
1425 pci_iounmap(dev, info->screen_base);
1426 pci_release_regions(dev);
1427 /* pci_disable_device(dev); */
1428
1429 framebuffer_release(info);
1430 }
1431 }
1432
1433 /* PCI suspend */
1434
1435 static int s3_pci_suspend(struct pci_dev* dev, pm_message_t state)
1436 {
1437 struct fb_info *info = pci_get_drvdata(dev);
1438 struct s3fb_info *par = info->par;
1439
1440 dev_info(info->device, "suspend\n");
1441
1442 console_lock();
1443 mutex_lock(&(par->open_lock));
1444
1445 if ((state.event == PM_EVENT_FREEZE) || (par->ref_count == 0)) {
1446 mutex_unlock(&(par->open_lock));
1447 console_unlock();
1448 return 0;
1449 }
1450
1451 fb_set_suspend(info, 1);
1452
1453 pci_save_state(dev);
1454 pci_disable_device(dev);
1455 pci_set_power_state(dev, pci_choose_state(dev, state));
1456
1457 mutex_unlock(&(par->open_lock));
1458 console_unlock();
1459
1460 return 0;
1461 }
1462
1463
1464 /* PCI resume */
1465
1466 static int s3_pci_resume(struct pci_dev* dev)
1467 {
1468 struct fb_info *info = pci_get_drvdata(dev);
1469 struct s3fb_info *par = info->par;
1470 int err;
1471
1472 dev_info(info->device, "resume\n");
1473
1474 console_lock();
1475 mutex_lock(&(par->open_lock));
1476
1477 if (par->ref_count == 0) {
1478 mutex_unlock(&(par->open_lock));
1479 console_unlock();
1480 return 0;
1481 }
1482
1483 pci_set_power_state(dev, PCI_D0);
1484 pci_restore_state(dev);
1485 err = pci_enable_device(dev);
1486 if (err) {
1487 mutex_unlock(&(par->open_lock));
1488 console_unlock();
1489 dev_err(info->device, "error %d enabling device for resume\n", err);
1490 return err;
1491 }
1492 pci_set_master(dev);
1493
1494 s3fb_set_par(info);
1495 fb_set_suspend(info, 0);
1496
1497 mutex_unlock(&(par->open_lock));
1498 console_unlock();
1499
1500 return 0;
1501 }
1502
1503
1504 /* List of boards that we are trying to support */
1505
1506 static struct pci_device_id s3_devices[] = {
1507 {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8810), .driver_data = CHIP_XXX_TRIO},
1508 {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8811), .driver_data = CHIP_XXX_TRIO},
1509 {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8812), .driver_data = CHIP_M65_AURORA64VP},
1510 {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8814), .driver_data = CHIP_767_TRIO64UVP},
1511 {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8901), .driver_data = CHIP_XXX_TRIO64V2_DXGX},
1512 {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8902), .driver_data = CHIP_551_PLATO_PX},
1513
1514 {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x5631), .driver_data = CHIP_325_VIRGE},
1515 {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x883D), .driver_data = CHIP_988_VIRGE_VX},
1516 {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8A01), .driver_data = CHIP_XXX_VIRGE_DXGX},
1517 {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8A10), .driver_data = CHIP_357_VIRGE_GX2},
1518 {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8A11), .driver_data = CHIP_359_VIRGE_GX2P},
1519 {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8A12), .driver_data = CHIP_359_VIRGE_GX2P},
1520 {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8A13), .driver_data = CHIP_36X_TRIO3D_1X_2X},
1521 {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8904), .driver_data = CHIP_365_TRIO3D},
1522 {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8C01), .driver_data = CHIP_260_VIRGE_MX},
1523
1524 {0, 0, 0, 0, 0, 0, 0}
1525 };
1526
1527
1528 MODULE_DEVICE_TABLE(pci, s3_devices);
1529
1530 static struct pci_driver s3fb_pci_driver = {
1531 .name = "s3fb",
1532 .id_table = s3_devices,
1533 .probe = s3_pci_probe,
1534 .remove = s3_pci_remove,
1535 .suspend = s3_pci_suspend,
1536 .resume = s3_pci_resume,
1537 };
1538
1539 /* Parse user specified options */
1540
1541 #ifndef MODULE
1542 static int __init s3fb_setup(char *options)
1543 {
1544 char *opt;
1545
1546 if (!options || !*options)
1547 return 0;
1548
1549 while ((opt = strsep(&options, ",")) != NULL) {
1550
1551 if (!*opt)
1552 continue;
1553 #ifdef CONFIG_MTRR
1554 else if (!strncmp(opt, "mtrr:", 5))
1555 mtrr = simple_strtoul(opt + 5, NULL, 0);
1556 #endif
1557 else if (!strncmp(opt, "fasttext:", 9))
1558 fasttext = simple_strtoul(opt + 9, NULL, 0);
1559 else
1560 mode_option = opt;
1561 }
1562
1563 return 0;
1564 }
1565 #endif
1566
1567 /* Cleanup */
1568
1569 static void __exit s3fb_cleanup(void)
1570 {
1571 pr_debug("s3fb: cleaning up\n");
1572 pci_unregister_driver(&s3fb_pci_driver);
1573 }
1574
1575 /* Driver Initialisation */
1576
1577 static int __init s3fb_init(void)
1578 {
1579
1580 #ifndef MODULE
1581 char *option = NULL;
1582
1583 if (fb_get_options("s3fb", &option))
1584 return -ENODEV;
1585 s3fb_setup(option);
1586 #endif
1587
1588 pr_debug("s3fb: initializing\n");
1589 return pci_register_driver(&s3fb_pci_driver);
1590 }
1591
1592 /* ------------------------------------------------------------------------- */
1593
1594 /* Modularization */
1595
1596 module_init(s3fb_init);
1597 module_exit(s3fb_cleanup);
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