2 * linux/drivers/video/s3fb.c -- Frame buffer device driver for S3 Trio/Virge
4 * Copyright (c) 2006-2007 Ondrej Zajicek <santiago@crfreenet.org>
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
10 * Code is based on David Boucher's viafb (http://davesdomain.org.uk/viafb/)
11 * which is based on the code of neofb.
14 #include <linux/module.h>
15 #include <linux/kernel.h>
16 #include <linux/errno.h>
17 #include <linux/string.h>
19 #include <linux/tty.h>
20 #include <linux/delay.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>
33 int chip, rev, mclk_freq;
35 struct vgastate state;
36 struct mutex open_lock;
37 unsigned int ref_count;
38 u32 pseudo_palette[16];
42 /* ------------------------------------------------------------------------- */
44 static const struct svga_fb_format s3fb_formats[] = {
45 { 0, {0, 6, 0}, {0, 6, 0}, {0, 6, 0}, {0, 0, 0}, 0,
46 FB_TYPE_TEXT, FB_AUX_TEXT_SVGA_STEP4, FB_VISUAL_PSEUDOCOLOR, 8, 16},
47 { 4, {0, 4, 0}, {0, 4, 0}, {0, 4, 0}, {0, 0, 0}, 0,
48 FB_TYPE_PACKED_PIXELS, 0, FB_VISUAL_PSEUDOCOLOR, 8, 16},
49 { 4, {0, 4, 0}, {0, 4, 0}, {0, 4, 0}, {0, 0, 0}, 1,
50 FB_TYPE_INTERLEAVED_PLANES, 1, FB_VISUAL_PSEUDOCOLOR, 8, 16},
51 { 8, {0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0}, 0,
52 FB_TYPE_PACKED_PIXELS, 0, FB_VISUAL_PSEUDOCOLOR, 4, 8},
53 {16, {10, 5, 0}, {5, 5, 0}, {0, 5, 0}, {0, 0, 0}, 0,
54 FB_TYPE_PACKED_PIXELS, 0, FB_VISUAL_TRUECOLOR, 2, 4},
55 {16, {11, 5, 0}, {5, 6, 0}, {0, 5, 0}, {0, 0, 0}, 0,
56 FB_TYPE_PACKED_PIXELS, 0, FB_VISUAL_TRUECOLOR, 2, 4},
57 {24, {16, 8, 0}, {8, 8, 0}, {0, 8, 0}, {0, 0, 0}, 0,
58 FB_TYPE_PACKED_PIXELS, 0, FB_VISUAL_TRUECOLOR, 1, 2},
59 {32, {16, 8, 0}, {8, 8, 0}, {0, 8, 0}, {0, 0, 0}, 0,
60 FB_TYPE_PACKED_PIXELS, 0, FB_VISUAL_TRUECOLOR, 1, 2},
65 static const struct svga_pll s3_pll = {3, 129, 3, 33, 0, 3,
66 35000, 240000, 14318};
68 static const int s3_memsizes[] = {4096, 0, 3072, 8192, 2048, 6144, 1024, 512};
70 static const char * const s3_names[] = {"S3 Unknown", "S3 Trio32", "S3 Trio64", "S3 Trio64V+",
71 "S3 Trio64UV+", "S3 Trio64V2/DX", "S3 Trio64V2/GX",
72 "S3 Plato/PX", "S3 Aurora64VP", "S3 Virge",
73 "S3 Virge/VX", "S3 Virge/DX", "S3 Virge/GX",
74 "S3 Virge/GX2", "S3 Virge/GX2P", "S3 Virge/GX2P",
75 "S3 Trio3D/1X", "S3 Trio3D/2X", "S3 Trio3D/2X"};
77 #define CHIP_UNKNOWN 0x00
78 #define CHIP_732_TRIO32 0x01
79 #define CHIP_764_TRIO64 0x02
80 #define CHIP_765_TRIO64VP 0x03
81 #define CHIP_767_TRIO64UVP 0x04
82 #define CHIP_775_TRIO64V2_DX 0x05
83 #define CHIP_785_TRIO64V2_GX 0x06
84 #define CHIP_551_PLATO_PX 0x07
85 #define CHIP_M65_AURORA64VP 0x08
86 #define CHIP_325_VIRGE 0x09
87 #define CHIP_988_VIRGE_VX 0x0A
88 #define CHIP_375_VIRGE_DX 0x0B
89 #define CHIP_385_VIRGE_GX 0x0C
90 #define CHIP_356_VIRGE_GX2 0x0D
91 #define CHIP_357_VIRGE_GX2P 0x0E
92 #define CHIP_359_VIRGE_GX2P 0x0F
93 #define CHIP_360_TRIO3D_1X 0x10
94 #define CHIP_362_TRIO3D_2X 0x11
95 #define CHIP_368_TRIO3D_2X 0x12
97 #define CHIP_XXX_TRIO 0x80
98 #define CHIP_XXX_TRIO64V2_DXGX 0x81
99 #define CHIP_XXX_VIRGE_DXGX 0x82
100 #define CHIP_36X_TRIO3D_1X_2X 0x83
102 #define CHIP_UNDECIDED_FLAG 0x80
103 #define CHIP_MASK 0xFF
105 /* CRT timing register sets */
107 static const struct vga_regset s3_h_total_regs[] = {{0x00, 0, 7}, {0x5D, 0, 0}, VGA_REGSET_END};
108 static const struct vga_regset s3_h_display_regs[] = {{0x01, 0, 7}, {0x5D, 1, 1}, VGA_REGSET_END};
109 static const struct vga_regset s3_h_blank_start_regs[] = {{0x02, 0, 7}, {0x5D, 2, 2}, VGA_REGSET_END};
110 static const struct vga_regset s3_h_blank_end_regs[] = {{0x03, 0, 4}, {0x05, 7, 7}, VGA_REGSET_END};
111 static const struct vga_regset s3_h_sync_start_regs[] = {{0x04, 0, 7}, {0x5D, 4, 4}, VGA_REGSET_END};
112 static const struct vga_regset s3_h_sync_end_regs[] = {{0x05, 0, 4}, VGA_REGSET_END};
114 static const struct vga_regset s3_v_total_regs[] = {{0x06, 0, 7}, {0x07, 0, 0}, {0x07, 5, 5}, {0x5E, 0, 0}, VGA_REGSET_END};
115 static const struct vga_regset s3_v_display_regs[] = {{0x12, 0, 7}, {0x07, 1, 1}, {0x07, 6, 6}, {0x5E, 1, 1}, VGA_REGSET_END};
116 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};
117 static const struct vga_regset s3_v_blank_end_regs[] = {{0x16, 0, 7}, VGA_REGSET_END};
118 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};
119 static const struct vga_regset s3_v_sync_end_regs[] = {{0x11, 0, 3}, VGA_REGSET_END};
121 static const struct vga_regset s3_line_compare_regs[] = {{0x18, 0, 7}, {0x07, 4, 4}, {0x09, 6, 6}, {0x5E, 6, 6}, VGA_REGSET_END};
122 static const struct vga_regset s3_start_address_regs[] = {{0x0d, 0, 7}, {0x0c, 0, 7}, {0x31, 4, 5}, {0x51, 0, 1}, VGA_REGSET_END};
123 static const struct vga_regset s3_offset_regs[] = {{0x13, 0, 7}, {0x51, 4, 5}, VGA_REGSET_END}; /* set 0x43 bit 2 to 0 */
125 static const struct svga_timing_regs s3_timing_regs = {
126 s3_h_total_regs, s3_h_display_regs, s3_h_blank_start_regs,
127 s3_h_blank_end_regs, s3_h_sync_start_regs, s3_h_sync_end_regs,
128 s3_v_total_regs, s3_v_display_regs, s3_v_blank_start_regs,
129 s3_v_blank_end_regs, s3_v_sync_start_regs, s3_v_sync_end_regs,
133 /* ------------------------------------------------------------------------- */
135 /* Module parameters */
138 static char *mode_option __devinitdata = "640x480-8@60";
141 static int mtrr __devinitdata = 1;
144 static int fasttext = 1;
147 MODULE_AUTHOR("(c) 2006-2007 Ondrej Zajicek <santiago@crfreenet.org>");
148 MODULE_LICENSE("GPL");
149 MODULE_DESCRIPTION("fbdev driver for S3 Trio/Virge");
151 module_param(mode_option, charp, 0444);
152 MODULE_PARM_DESC(mode_option, "Default video mode ('640x480-8@60', etc)");
153 module_param_named(mode, mode_option, charp, 0444);
154 MODULE_PARM_DESC(mode, "Default video mode ('640x480-8@60', etc) (deprecated)");
157 module_param(mtrr, int, 0444);
158 MODULE_PARM_DESC(mtrr, "Enable write-combining with MTRR (1=enable, 0=disable, default=1)");
161 module_param(fasttext, int, 0644);
162 MODULE_PARM_DESC(fasttext, "Enable S3 fast text mode (1=enable, 0=disable, default=1)");
165 /* ------------------------------------------------------------------------- */
167 /* Set font in S3 fast text mode */
169 static void s3fb_settile_fast(struct fb_info *info, struct fb_tilemap *map)
171 const u8 *font = map->data;
172 u8 __iomem *fb = (u8 __iomem *) info->screen_base;
175 if ((map->width != 8) || (map->height != 16) ||
176 (map->depth != 1) || (map->length != 256)) {
177 printk(KERN_ERR "fb%d: unsupported font parameters: width %d, height %d, depth %d, length %d\n",
178 info->node, map->width, map->height, map->depth, map->length);
183 for (i = 0; i < map->height; i++) {
184 for (c = 0; c < map->length; c++) {
185 fb_writeb(font[c * map->height + i], fb + c * 4);
191 static void s3fb_tilecursor(struct fb_info *info, struct fb_tilecursor *cursor)
193 struct s3fb_info *par = info->par;
195 svga_tilecursor(par->state.vgabase, info, cursor);
198 static struct fb_tile_ops s3fb_tile_ops = {
199 .fb_settile = svga_settile,
200 .fb_tilecopy = svga_tilecopy,
201 .fb_tilefill = svga_tilefill,
202 .fb_tileblit = svga_tileblit,
203 .fb_tilecursor = s3fb_tilecursor,
204 .fb_get_tilemax = svga_get_tilemax,
207 static struct fb_tile_ops s3fb_fast_tile_ops = {
208 .fb_settile = s3fb_settile_fast,
209 .fb_tilecopy = svga_tilecopy,
210 .fb_tilefill = svga_tilefill,
211 .fb_tileblit = svga_tileblit,
212 .fb_tilecursor = s3fb_tilecursor,
213 .fb_get_tilemax = svga_get_tilemax,
217 /* ------------------------------------------------------------------------- */
219 /* image data is MSB-first, fb structure is MSB-first too */
220 static inline u32 expand_color(u32 c)
222 return ((c & 1) | ((c & 2) << 7) | ((c & 4) << 14) | ((c & 8) << 21)) * 0xFF;
225 /* s3fb_iplan_imageblit silently assumes that almost everything is 8-pixel aligned */
226 static void s3fb_iplan_imageblit(struct fb_info *info, const struct fb_image *image)
228 u32 fg = expand_color(image->fg_color);
229 u32 bg = expand_color(image->bg_color);
230 const u8 *src1, *src;
237 dst1 = info->screen_base + (image->dy * info->fix.line_length)
238 + ((image->dx / 8) * 4);
240 for (y = 0; y < image->height; y++) {
242 dst = (u32 __iomem *) dst1;
243 for (x = 0; x < image->width; x += 8) {
244 val = *(src++) * 0x01010101;
245 val = (val & fg) | (~val & bg);
246 fb_writel(val, dst++);
248 src1 += image->width / 8;
249 dst1 += info->fix.line_length;
254 /* s3fb_iplan_fillrect silently assumes that almost everything is 8-pixel aligned */
255 static void s3fb_iplan_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
257 u32 fg = expand_color(rect->color);
262 dst1 = info->screen_base + (rect->dy * info->fix.line_length)
263 + ((rect->dx / 8) * 4);
265 for (y = 0; y < rect->height; y++) {
266 dst = (u32 __iomem *) dst1;
267 for (x = 0; x < rect->width; x += 8) {
268 fb_writel(fg, dst++);
270 dst1 += info->fix.line_length;
275 /* image data is MSB-first, fb structure is high-nibble-in-low-byte-first */
276 static inline u32 expand_pixel(u32 c)
278 return (((c & 1) << 24) | ((c & 2) << 27) | ((c & 4) << 14) | ((c & 8) << 17) |
279 ((c & 16) << 4) | ((c & 32) << 7) | ((c & 64) >> 6) | ((c & 128) >> 3)) * 0xF;
282 /* s3fb_cfb4_imageblit silently assumes that almost everything is 8-pixel aligned */
283 static void s3fb_cfb4_imageblit(struct fb_info *info, const struct fb_image *image)
285 u32 fg = image->fg_color * 0x11111111;
286 u32 bg = image->bg_color * 0x11111111;
287 const u8 *src1, *src;
294 dst1 = info->screen_base + (image->dy * info->fix.line_length)
295 + ((image->dx / 8) * 4);
297 for (y = 0; y < image->height; y++) {
299 dst = (u32 __iomem *) dst1;
300 for (x = 0; x < image->width; x += 8) {
301 val = expand_pixel(*(src++));
302 val = (val & fg) | (~val & bg);
303 fb_writel(val, dst++);
305 src1 += image->width / 8;
306 dst1 += info->fix.line_length;
310 static void s3fb_imageblit(struct fb_info *info, const struct fb_image *image)
312 if ((info->var.bits_per_pixel == 4) && (image->depth == 1)
313 && ((image->width % 8) == 0) && ((image->dx % 8) == 0)) {
314 if (info->fix.type == FB_TYPE_INTERLEAVED_PLANES)
315 s3fb_iplan_imageblit(info, image);
317 s3fb_cfb4_imageblit(info, image);
319 cfb_imageblit(info, image);
322 static void s3fb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
324 if ((info->var.bits_per_pixel == 4)
325 && ((rect->width % 8) == 0) && ((rect->dx % 8) == 0)
326 && (info->fix.type == FB_TYPE_INTERLEAVED_PLANES))
327 s3fb_iplan_fillrect(info, rect);
329 cfb_fillrect(info, rect);
334 /* ------------------------------------------------------------------------- */
337 static void s3_set_pixclock(struct fb_info *info, u32 pixclock)
339 struct s3fb_info *par = info->par;
344 rv = svga_compute_pll(&s3_pll, 1000000000 / pixclock, &m, &n, &r, info->node);
346 printk(KERN_ERR "fb%d: cannot set requested pixclock, keeping old value\n", info->node);
350 /* Set VGA misc register */
351 regval = vga_r(NULL, VGA_MIS_R);
352 vga_w(NULL, VGA_MIS_W, regval | VGA_MIS_ENB_PLL_LOAD);
354 /* Set S3 clock registers */
355 if (par->chip == CHIP_360_TRIO3D_1X ||
356 par->chip == CHIP_362_TRIO3D_2X ||
357 par->chip == CHIP_368_TRIO3D_2X) {
358 vga_wseq(NULL, 0x12, (n - 2) | ((r & 3) << 6)); /* n and two bits of r */
359 vga_wseq(NULL, 0x29, r >> 2); /* remaining highest bit of r */
361 vga_wseq(NULL, 0x12, (n - 2) | (r << 5));
362 vga_wseq(NULL, 0x13, m - 2);
366 /* Activate clock - write 0, 1, 0 to seq/15 bit 5 */
367 regval = vga_rseq (NULL, 0x15); /* | 0x80; */
368 vga_wseq(NULL, 0x15, regval & ~(1<<5));
369 vga_wseq(NULL, 0x15, regval | (1<<5));
370 vga_wseq(NULL, 0x15, regval & ~(1<<5));
374 /* Open framebuffer */
376 static int s3fb_open(struct fb_info *info, int user)
378 struct s3fb_info *par = info->par;
380 mutex_lock(&(par->open_lock));
381 if (par->ref_count == 0) {
382 memset(&(par->state), 0, sizeof(struct vgastate));
383 par->state.flags = VGA_SAVE_MODE | VGA_SAVE_FONTS | VGA_SAVE_CMAP;
384 par->state.num_crtc = 0x70;
385 par->state.num_seq = 0x20;
386 save_vga(&(par->state));
390 mutex_unlock(&(par->open_lock));
395 /* Close framebuffer */
397 static int s3fb_release(struct fb_info *info, int user)
399 struct s3fb_info *par = info->par;
401 mutex_lock(&(par->open_lock));
402 if (par->ref_count == 0) {
403 mutex_unlock(&(par->open_lock));
407 if (par->ref_count == 1)
408 restore_vga(&(par->state));
411 mutex_unlock(&(par->open_lock));
416 /* Validate passed in var */
418 static int s3fb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
420 struct s3fb_info *par = info->par;
424 /* Find appropriate format */
425 rv = svga_match_format (s3fb_formats, var, NULL);
427 /* 32bpp mode is not supported on VIRGE VX,
428 24bpp is not supported on others */
429 if ((par->chip == CHIP_988_VIRGE_VX) ? (rv == 7) : (rv == 6))
433 printk(KERN_ERR "fb%d: unsupported mode requested\n", info->node);
437 /* Do not allow to have real resoulution larger than virtual */
438 if (var->xres > var->xres_virtual)
439 var->xres_virtual = var->xres;
441 if (var->yres > var->yres_virtual)
442 var->yres_virtual = var->yres;
444 /* Round up xres_virtual to have proper alignment of lines */
445 step = s3fb_formats[rv].xresstep - 1;
446 var->xres_virtual = (var->xres_virtual+step) & ~step;
448 /* Check whether have enough memory */
449 mem = ((var->bits_per_pixel * var->xres_virtual) >> 3) * var->yres_virtual;
450 if (mem > info->screen_size) {
451 printk(KERN_ERR "fb%d: not enough framebuffer memory (%d kB requested , %d kB available)\n",
452 info->node, mem >> 10, (unsigned int) (info->screen_size >> 10));
456 rv = svga_check_timings (&s3_timing_regs, var, info->node);
458 printk(KERN_ERR "fb%d: invalid timings requested\n", info->node);
462 rv = svga_compute_pll(&s3_pll, PICOS2KHZ(var->pixclock), &m, &n, &r,
465 printk(KERN_ERR "fb%d: invalid pixclock value requested\n",
473 /* Set video mode from par */
475 static int s3fb_set_par(struct fb_info *info)
477 struct s3fb_info *par = info->par;
478 u32 value, mode, hmul, offset_value, screen_size, multiplex, dbytes;
479 u32 bpp = info->var.bits_per_pixel;
482 info->fix.ypanstep = 1;
483 info->fix.line_length = (info->var.xres_virtual * bpp) / 8;
485 info->flags &= ~FBINFO_MISC_TILEBLITTING;
486 info->tileops = NULL;
488 /* in 4bpp supports 8p wide tiles only, any tiles otherwise */
489 info->pixmap.blit_x = (bpp == 4) ? (1 << (8 - 1)) : (~(u32)0);
490 info->pixmap.blit_y = ~(u32)0;
492 offset_value = (info->var.xres_virtual * bpp) / 64;
493 screen_size = info->var.yres_virtual * info->fix.line_length;
495 info->fix.ypanstep = 16;
496 info->fix.line_length = 0;
498 info->flags |= FBINFO_MISC_TILEBLITTING;
499 info->tileops = fasttext ? &s3fb_fast_tile_ops : &s3fb_tile_ops;
501 /* supports 8x16 tiles only */
502 info->pixmap.blit_x = 1 << (8 - 1);
503 info->pixmap.blit_y = 1 << (16 - 1);
505 offset_value = info->var.xres_virtual / 16;
506 screen_size = (info->var.xres_virtual * info->var.yres_virtual) / 64;
509 info->var.xoffset = 0;
510 info->var.yoffset = 0;
511 info->var.activate = FB_ACTIVATE_NOW;
513 /* Unlock registers */
514 vga_wcrt(NULL, 0x38, 0x48);
515 vga_wcrt(NULL, 0x39, 0xA5);
516 vga_wseq(NULL, 0x08, 0x06);
517 svga_wcrt_mask(par->state.vgabase, 0x11, 0x00, 0x80);
519 /* Blank screen and turn off sync */
520 svga_wseq_mask(par->state.vgabase, 0x01, 0x20, 0x20);
521 svga_wcrt_mask(par->state.vgabase, 0x17, 0x00, 0x80);
523 /* Set default values */
524 svga_set_default_gfx_regs(par->state.vgabase);
525 svga_set_default_atc_regs(par->state.vgabase);
526 svga_set_default_seq_regs(par->state.vgabase);
527 svga_set_default_crt_regs(par->state.vgabase);
528 svga_wcrt_multi(par->state.vgabase, s3_line_compare_regs, 0xFFFFFFFF);
529 svga_wcrt_multi(par->state.vgabase, s3_start_address_regs, 0);
531 /* S3 specific initialization */
532 svga_wcrt_mask(par->state.vgabase, 0x58, 0x10, 0x10); /* enable linear framebuffer */
533 svga_wcrt_mask(par->state.vgabase, 0x31, 0x08, 0x08); /* enable sequencer access to framebuffer above 256 kB */
535 /* svga_wcrt_mask(par->state.vgabase, 0x33, 0x08, 0x08); */ /* DDR ? */
536 /* svga_wcrt_mask(par->state.vgabase, 0x43, 0x01, 0x01); */ /* DDR ? */
537 svga_wcrt_mask(par->state.vgabase, 0x33, 0x00, 0x08); /* no DDR ? */
538 svga_wcrt_mask(par->state.vgabase, 0x43, 0x00, 0x01); /* no DDR ? */
540 svga_wcrt_mask(par->state.vgabase, 0x5D, 0x00, 0x28); /* Clear strange HSlen bits */
542 /* svga_wcrt_mask(par->state.vgabase, 0x58, 0x03, 0x03); */
544 /* svga_wcrt_mask(par->state.vgabase, 0x53, 0x12, 0x13); */ /* enable MMIO */
545 /* svga_wcrt_mask(par->state.vgabase, 0x40, 0x08, 0x08); */ /* enable write buffer */
548 /* Set the offset register */
549 pr_debug("fb%d: offset register : %d\n", info->node, offset_value);
550 svga_wcrt_multi(par->state.vgabase, s3_offset_regs, offset_value);
552 if (par->chip != CHIP_360_TRIO3D_1X &&
553 par->chip != CHIP_362_TRIO3D_2X &&
554 par->chip != CHIP_368_TRIO3D_2X) {
555 vga_wcrt(NULL, 0x54, 0x18); /* M parameter */
556 vga_wcrt(NULL, 0x60, 0xff); /* N parameter */
557 vga_wcrt(NULL, 0x61, 0xff); /* L parameter */
558 vga_wcrt(NULL, 0x62, 0xff); /* L parameter */
561 vga_wcrt(NULL, 0x3A, 0x35);
562 svga_wattr(par->state.vgabase, 0x33, 0x00);
564 if (info->var.vmode & FB_VMODE_DOUBLE)
565 svga_wcrt_mask(par->state.vgabase, 0x09, 0x80, 0x80);
567 svga_wcrt_mask(par->state.vgabase, 0x09, 0x00, 0x80);
569 if (info->var.vmode & FB_VMODE_INTERLACED)
570 svga_wcrt_mask(par->state.vgabase, 0x42, 0x20, 0x20);
572 svga_wcrt_mask(par->state.vgabase, 0x42, 0x00, 0x20);
574 /* Disable hardware graphics cursor */
575 svga_wcrt_mask(par->state.vgabase, 0x45, 0x00, 0x01);
576 /* Disable Streams engine */
577 svga_wcrt_mask(par->state.vgabase, 0x67, 0x00, 0x0C);
579 mode = svga_match_format(s3fb_formats, &(info->var), &(info->fix));
581 /* S3 virge DX hack */
582 if (par->chip == CHIP_375_VIRGE_DX) {
583 vga_wcrt(NULL, 0x86, 0x80);
584 vga_wcrt(NULL, 0x90, 0x00);
587 /* S3 virge VX hack */
588 if (par->chip == CHIP_988_VIRGE_VX) {
589 vga_wcrt(NULL, 0x50, 0x00);
590 vga_wcrt(NULL, 0x67, 0x50);
592 vga_wcrt(NULL, 0x63, (mode <= 2) ? 0x90 : 0x09);
593 vga_wcrt(NULL, 0x66, 0x90);
596 if (par->chip == CHIP_360_TRIO3D_1X ||
597 par->chip == CHIP_362_TRIO3D_2X ||
598 par->chip == CHIP_368_TRIO3D_2X) {
599 dbytes = info->var.xres * ((bpp+7)/8);
600 vga_wcrt(NULL, 0x91, (dbytes + 7) / 8);
601 vga_wcrt(NULL, 0x90, (((dbytes + 7) / 8) >> 8) | 0x80);
603 vga_wcrt(NULL, 0x66, 0x81);
606 svga_wcrt_mask(par->state.vgabase, 0x31, 0x00, 0x40);
610 /* Set mode-specific register values */
613 pr_debug("fb%d: text mode\n", info->node);
614 svga_set_textmode_vga_regs(par->state.vgabase);
616 /* Set additional registers like in 8-bit mode */
617 svga_wcrt_mask(par->state.vgabase, 0x50, 0x00, 0x30);
618 svga_wcrt_mask(par->state.vgabase, 0x67, 0x00, 0xF0);
620 /* Disable enhanced mode */
621 svga_wcrt_mask(par->state.vgabase, 0x3A, 0x00, 0x30);
624 pr_debug("fb%d: high speed text mode set\n", info->node);
625 svga_wcrt_mask(par->state.vgabase, 0x31, 0x40, 0x40);
629 pr_debug("fb%d: 4 bit pseudocolor\n", info->node);
630 vga_wgfx(NULL, VGA_GFX_MODE, 0x40);
632 /* Set additional registers like in 8-bit mode */
633 svga_wcrt_mask(par->state.vgabase, 0x50, 0x00, 0x30);
634 svga_wcrt_mask(par->state.vgabase, 0x67, 0x00, 0xF0);
636 /* disable enhanced mode */
637 svga_wcrt_mask(par->state.vgabase, 0x3A, 0x00, 0x30);
640 pr_debug("fb%d: 4 bit pseudocolor, planar\n", info->node);
642 /* Set additional registers like in 8-bit mode */
643 svga_wcrt_mask(par->state.vgabase, 0x50, 0x00, 0x30);
644 svga_wcrt_mask(par->state.vgabase, 0x67, 0x00, 0xF0);
646 /* disable enhanced mode */
647 svga_wcrt_mask(par->state.vgabase, 0x3A, 0x00, 0x30);
650 pr_debug("fb%d: 8 bit pseudocolor\n", info->node);
651 svga_wcrt_mask(par->state.vgabase, 0x50, 0x00, 0x30);
652 if (info->var.pixclock > 20000 ||
653 par->chip == CHIP_360_TRIO3D_1X ||
654 par->chip == CHIP_362_TRIO3D_2X ||
655 par->chip == CHIP_368_TRIO3D_2X)
656 svga_wcrt_mask(par->state.vgabase, 0x67, 0x00, 0xF0);
658 svga_wcrt_mask(par->state.vgabase, 0x67, 0x10, 0xF0);
663 pr_debug("fb%d: 5/5/5 truecolor\n", info->node);
664 if (par->chip == CHIP_988_VIRGE_VX) {
665 if (info->var.pixclock > 20000)
666 svga_wcrt_mask(par->state.vgabase, 0x67, 0x20, 0xF0);
668 svga_wcrt_mask(par->state.vgabase, 0x67, 0x30, 0xF0);
670 svga_wcrt_mask(par->state.vgabase, 0x50, 0x10, 0x30);
671 svga_wcrt_mask(par->state.vgabase, 0x67, 0x30, 0xF0);
672 if (par->chip != CHIP_360_TRIO3D_1X &&
673 par->chip != CHIP_362_TRIO3D_2X &&
674 par->chip != CHIP_368_TRIO3D_2X)
679 pr_debug("fb%d: 5/6/5 truecolor\n", info->node);
680 if (par->chip == CHIP_988_VIRGE_VX) {
681 if (info->var.pixclock > 20000)
682 svga_wcrt_mask(par->state.vgabase, 0x67, 0x40, 0xF0);
684 svga_wcrt_mask(par->state.vgabase, 0x67, 0x50, 0xF0);
686 svga_wcrt_mask(par->state.vgabase, 0x50, 0x10, 0x30);
687 svga_wcrt_mask(par->state.vgabase, 0x67, 0x50, 0xF0);
688 if (par->chip != CHIP_360_TRIO3D_1X &&
689 par->chip != CHIP_362_TRIO3D_2X &&
690 par->chip != CHIP_368_TRIO3D_2X)
696 pr_debug("fb%d: 8/8/8 truecolor\n", info->node);
697 svga_wcrt_mask(par->state.vgabase, 0x67, 0xD0, 0xF0);
700 pr_debug("fb%d: 8/8/8/8 truecolor\n", info->node);
701 svga_wcrt_mask(par->state.vgabase, 0x50, 0x30, 0x30);
702 svga_wcrt_mask(par->state.vgabase, 0x67, 0xD0, 0xF0);
705 printk(KERN_ERR "fb%d: unsupported mode - bug\n", info->node);
709 if (par->chip != CHIP_988_VIRGE_VX) {
710 svga_wseq_mask(par->state.vgabase, 0x15, multiplex ? 0x10 : 0x00, 0x10);
711 svga_wseq_mask(par->state.vgabase, 0x18, multiplex ? 0x80 : 0x00, 0x80);
714 s3_set_pixclock(info, info->var.pixclock);
715 svga_set_timings(&s3_timing_regs, &(info->var), hmul, 1,
716 (info->var.vmode & FB_VMODE_DOUBLE) ? 2 : 1,
717 (info->var.vmode & FB_VMODE_INTERLACED) ? 2 : 1,
720 /* Set interlaced mode start/end register */
721 value = info->var.xres + info->var.left_margin + info->var.right_margin + info->var.hsync_len;
722 value = ((value * hmul) / 8) - 5;
723 vga_wcrt(NULL, 0x3C, (value + 1) / 2);
725 memset_io(info->screen_base, 0x00, screen_size);
726 /* Device and screen back on */
727 svga_wcrt_mask(par->state.vgabase, 0x17, 0x80, 0x80);
728 svga_wseq_mask(par->state.vgabase, 0x01, 0x00, 0x20);
733 /* Set a colour register */
735 static int s3fb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
736 u_int transp, struct fb_info *fb)
738 switch (fb->var.bits_per_pixel) {
744 if ((fb->var.bits_per_pixel == 4) &&
745 (fb->var.nonstd == 0)) {
746 outb(0xF0, VGA_PEL_MSK);
747 outb(regno*16, VGA_PEL_IW);
749 outb(0x0F, VGA_PEL_MSK);
750 outb(regno, VGA_PEL_IW);
752 outb(red >> 10, VGA_PEL_D);
753 outb(green >> 10, VGA_PEL_D);
754 outb(blue >> 10, VGA_PEL_D);
760 outb(0xFF, VGA_PEL_MSK);
761 outb(regno, VGA_PEL_IW);
762 outb(red >> 10, VGA_PEL_D);
763 outb(green >> 10, VGA_PEL_D);
764 outb(blue >> 10, VGA_PEL_D);
770 if (fb->var.green.length == 5)
771 ((u32*)fb->pseudo_palette)[regno] = ((red & 0xF800) >> 1) |
772 ((green & 0xF800) >> 6) | ((blue & 0xF800) >> 11);
773 else if (fb->var.green.length == 6)
774 ((u32*)fb->pseudo_palette)[regno] = (red & 0xF800) |
775 ((green & 0xFC00) >> 5) | ((blue & 0xF800) >> 11);
783 ((u32*)fb->pseudo_palette)[regno] = ((red & 0xFF00) << 8) |
784 (green & 0xFF00) | ((blue & 0xFF00) >> 8);
794 /* Set the display blanking state */
796 static int s3fb_blank(int blank_mode, struct fb_info *info)
798 struct s3fb_info *par = info->par;
800 switch (blank_mode) {
801 case FB_BLANK_UNBLANK:
802 pr_debug("fb%d: unblank\n", info->node);
803 svga_wcrt_mask(par->state.vgabase, 0x56, 0x00, 0x06);
804 svga_wseq_mask(par->state.vgabase, 0x01, 0x00, 0x20);
806 case FB_BLANK_NORMAL:
807 pr_debug("fb%d: blank\n", info->node);
808 svga_wcrt_mask(par->state.vgabase, 0x56, 0x00, 0x06);
809 svga_wseq_mask(par->state.vgabase, 0x01, 0x20, 0x20);
811 case FB_BLANK_HSYNC_SUSPEND:
812 pr_debug("fb%d: hsync\n", info->node);
813 svga_wcrt_mask(par->state.vgabase, 0x56, 0x02, 0x06);
814 svga_wseq_mask(par->state.vgabase, 0x01, 0x20, 0x20);
816 case FB_BLANK_VSYNC_SUSPEND:
817 pr_debug("fb%d: vsync\n", info->node);
818 svga_wcrt_mask(par->state.vgabase, 0x56, 0x04, 0x06);
819 svga_wseq_mask(par->state.vgabase, 0x01, 0x20, 0x20);
821 case FB_BLANK_POWERDOWN:
822 pr_debug("fb%d: sync down\n", info->node);
823 svga_wcrt_mask(par->state.vgabase, 0x56, 0x06, 0x06);
824 svga_wseq_mask(par->state.vgabase, 0x01, 0x20, 0x20);
832 /* Pan the display */
834 static int s3fb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
836 struct s3fb_info *par = info->par;
839 /* Calculate the offset */
840 if (var->bits_per_pixel == 0) {
841 offset = (var->yoffset / 16) * (var->xres_virtual / 2) + (var->xoffset / 2);
842 offset = offset >> 2;
844 offset = (var->yoffset * info->fix.line_length) +
845 (var->xoffset * var->bits_per_pixel / 8);
846 offset = offset >> 2;
850 svga_wcrt_multi(par->state.vgabase, s3_start_address_regs, offset);
855 /* ------------------------------------------------------------------------- */
857 /* Frame buffer operations */
859 static struct fb_ops s3fb_ops = {
860 .owner = THIS_MODULE,
861 .fb_open = s3fb_open,
862 .fb_release = s3fb_release,
863 .fb_check_var = s3fb_check_var,
864 .fb_set_par = s3fb_set_par,
865 .fb_setcolreg = s3fb_setcolreg,
866 .fb_blank = s3fb_blank,
867 .fb_pan_display = s3fb_pan_display,
868 .fb_fillrect = s3fb_fillrect,
869 .fb_copyarea = cfb_copyarea,
870 .fb_imageblit = s3fb_imageblit,
871 .fb_get_caps = svga_get_caps,
874 /* ------------------------------------------------------------------------- */
876 static int __devinit s3_identification(int chip)
878 if (chip == CHIP_XXX_TRIO) {
879 u8 cr30 = vga_rcrt(NULL, 0x30);
880 u8 cr2e = vga_rcrt(NULL, 0x2e);
881 u8 cr2f = vga_rcrt(NULL, 0x2f);
883 if ((cr30 == 0xE0) || (cr30 == 0xE1)) {
885 return CHIP_732_TRIO32;
888 return CHIP_764_TRIO64;
890 return CHIP_765_TRIO64VP;
895 if (chip == CHIP_XXX_TRIO64V2_DXGX) {
896 u8 cr6f = vga_rcrt(NULL, 0x6f);
899 return CHIP_775_TRIO64V2_DX;
901 return CHIP_785_TRIO64V2_GX;
904 if (chip == CHIP_XXX_VIRGE_DXGX) {
905 u8 cr6f = vga_rcrt(NULL, 0x6f);
908 return CHIP_375_VIRGE_DX;
910 return CHIP_385_VIRGE_GX;
913 if (chip == CHIP_36X_TRIO3D_1X_2X) {
914 switch (vga_rcrt(NULL, 0x2f)) {
916 return CHIP_360_TRIO3D_1X;
918 return CHIP_362_TRIO3D_2X;
920 return CHIP_368_TRIO3D_2X;
930 static int __devinit s3_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
932 struct fb_info *info;
933 struct s3fb_info *par;
935 u8 regval, cr38, cr39;
937 /* Ignore secondary VGA device because there is no VGA arbitration */
938 if (! svga_primary_device(dev)) {
939 dev_info(&(dev->dev), "ignoring secondary device\n");
943 /* Allocate and fill driver data structure */
944 info = framebuffer_alloc(sizeof(struct s3fb_info), &(dev->dev));
946 dev_err(&(dev->dev), "cannot allocate memory\n");
951 mutex_init(&par->open_lock);
953 info->flags = FBINFO_PARTIAL_PAN_OK | FBINFO_HWACCEL_YPAN;
954 info->fbops = &s3fb_ops;
956 /* Prepare PCI device */
957 rc = pci_enable_device(dev);
959 dev_err(info->device, "cannot enable PCI device\n");
960 goto err_enable_device;
963 rc = pci_request_regions(dev, "s3fb");
965 dev_err(info->device, "cannot reserve framebuffer region\n");
966 goto err_request_regions;
970 info->fix.smem_start = pci_resource_start(dev, 0);
971 info->fix.smem_len = pci_resource_len(dev, 0);
973 /* Map physical IO memory address into kernel space */
974 info->screen_base = pci_iomap(dev, 0, 0);
975 if (! info->screen_base) {
977 dev_err(info->device, "iomap for framebuffer failed\n");
982 cr38 = vga_rcrt(NULL, 0x38);
983 cr39 = vga_rcrt(NULL, 0x39);
984 vga_wseq(NULL, 0x08, 0x06);
985 vga_wcrt(NULL, 0x38, 0x48);
986 vga_wcrt(NULL, 0x39, 0xA5);
988 /* Identify chip type */
989 par->chip = id->driver_data & CHIP_MASK;
990 par->rev = vga_rcrt(NULL, 0x2f);
991 if (par->chip & CHIP_UNDECIDED_FLAG)
992 par->chip = s3_identification(par->chip);
994 /* Find how many physical memory there is on card */
995 /* 0x36 register is accessible even if other registers are locked */
996 regval = vga_rcrt(NULL, 0x36);
997 if (par->chip == CHIP_360_TRIO3D_1X ||
998 par->chip == CHIP_362_TRIO3D_2X ||
999 par->chip == CHIP_368_TRIO3D_2X) {
1000 switch ((regval & 0xE0) >> 5) {
1001 case 0: /* 8MB -- only 4MB usable for display */
1002 case 1: /* 4MB with 32-bit bus */
1004 info->screen_size = 4 << 20;
1007 info->screen_size = 2 << 20;
1011 info->screen_size = s3_memsizes[regval >> 5] << 10;
1012 info->fix.smem_len = info->screen_size;
1014 /* Find MCLK frequency */
1015 regval = vga_rseq(NULL, 0x10);
1016 par->mclk_freq = ((vga_rseq(NULL, 0x11) + 2) * 14318) / ((regval & 0x1F) + 2);
1017 par->mclk_freq = par->mclk_freq >> (regval >> 5);
1020 vga_wcrt(NULL, 0x38, cr38);
1021 vga_wcrt(NULL, 0x39, cr39);
1023 strcpy(info->fix.id, s3_names [par->chip]);
1024 info->fix.mmio_start = 0;
1025 info->fix.mmio_len = 0;
1026 info->fix.type = FB_TYPE_PACKED_PIXELS;
1027 info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
1028 info->fix.ypanstep = 0;
1029 info->fix.accel = FB_ACCEL_NONE;
1030 info->pseudo_palette = (void*) (par->pseudo_palette);
1032 /* Prepare startup mode */
1033 rc = fb_find_mode(&(info->var), info, mode_option, NULL, 0, NULL, 8);
1034 if (! ((rc == 1) || (rc == 2))) {
1036 dev_err(info->device, "mode %s not found\n", mode_option);
1040 rc = fb_alloc_cmap(&info->cmap, 256, 0);
1042 dev_err(info->device, "cannot allocate colormap\n");
1043 goto err_alloc_cmap;
1046 rc = register_framebuffer(info);
1048 dev_err(info->device, "cannot register framebuffer\n");
1052 printk(KERN_INFO "fb%d: %s on %s, %d MB RAM, %d MHz MCLK\n", info->node, info->fix.id,
1053 pci_name(dev), info->fix.smem_len >> 20, (par->mclk_freq + 500) / 1000);
1055 if (par->chip == CHIP_UNKNOWN)
1056 printk(KERN_INFO "fb%d: unknown chip, CR2D=%x, CR2E=%x, CRT2F=%x, CRT30=%x\n",
1057 info->node, vga_rcrt(NULL, 0x2d), vga_rcrt(NULL, 0x2e),
1058 vga_rcrt(NULL, 0x2f), vga_rcrt(NULL, 0x30));
1060 /* Record a reference to the driver data */
1061 pci_set_drvdata(dev, info);
1066 par->mtrr_reg = mtrr_add(info->fix.smem_start, info->fix.smem_len, MTRR_TYPE_WRCOMB, 1);
1072 /* Error handling */
1074 fb_dealloc_cmap(&info->cmap);
1077 pci_iounmap(dev, info->screen_base);
1079 pci_release_regions(dev);
1080 err_request_regions:
1081 /* pci_disable_device(dev); */
1083 framebuffer_release(info);
1090 static void __devexit s3_pci_remove(struct pci_dev *dev)
1092 struct fb_info *info = pci_get_drvdata(dev);
1097 struct s3fb_info *par = info->par;
1099 if (par->mtrr_reg >= 0) {
1100 mtrr_del(par->mtrr_reg, 0, 0);
1105 unregister_framebuffer(info);
1106 fb_dealloc_cmap(&info->cmap);
1108 pci_iounmap(dev, info->screen_base);
1109 pci_release_regions(dev);
1110 /* pci_disable_device(dev); */
1112 pci_set_drvdata(dev, NULL);
1113 framebuffer_release(info);
1119 static int s3_pci_suspend(struct pci_dev* dev, pm_message_t state)
1121 struct fb_info *info = pci_get_drvdata(dev);
1122 struct s3fb_info *par = info->par;
1124 dev_info(info->device, "suspend\n");
1127 mutex_lock(&(par->open_lock));
1129 if ((state.event == PM_EVENT_FREEZE) || (par->ref_count == 0)) {
1130 mutex_unlock(&(par->open_lock));
1135 fb_set_suspend(info, 1);
1137 pci_save_state(dev);
1138 pci_disable_device(dev);
1139 pci_set_power_state(dev, pci_choose_state(dev, state));
1141 mutex_unlock(&(par->open_lock));
1150 static int s3_pci_resume(struct pci_dev* dev)
1152 struct fb_info *info = pci_get_drvdata(dev);
1153 struct s3fb_info *par = info->par;
1156 dev_info(info->device, "resume\n");
1159 mutex_lock(&(par->open_lock));
1161 if (par->ref_count == 0) {
1162 mutex_unlock(&(par->open_lock));
1167 pci_set_power_state(dev, PCI_D0);
1168 pci_restore_state(dev);
1169 err = pci_enable_device(dev);
1171 mutex_unlock(&(par->open_lock));
1173 dev_err(info->device, "error %d enabling device for resume\n", err);
1176 pci_set_master(dev);
1179 fb_set_suspend(info, 0);
1181 mutex_unlock(&(par->open_lock));
1188 /* List of boards that we are trying to support */
1190 static struct pci_device_id s3_devices[] __devinitdata = {
1191 {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8810), .driver_data = CHIP_XXX_TRIO},
1192 {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8811), .driver_data = CHIP_XXX_TRIO},
1193 {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8812), .driver_data = CHIP_M65_AURORA64VP},
1194 {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8814), .driver_data = CHIP_767_TRIO64UVP},
1195 {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8901), .driver_data = CHIP_XXX_TRIO64V2_DXGX},
1196 {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8902), .driver_data = CHIP_551_PLATO_PX},
1198 {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x5631), .driver_data = CHIP_325_VIRGE},
1199 {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x883D), .driver_data = CHIP_988_VIRGE_VX},
1200 {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8A01), .driver_data = CHIP_XXX_VIRGE_DXGX},
1201 {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8A10), .driver_data = CHIP_356_VIRGE_GX2},
1202 {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8A11), .driver_data = CHIP_357_VIRGE_GX2P},
1203 {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8A12), .driver_data = CHIP_359_VIRGE_GX2P},
1204 {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8A13), .driver_data = CHIP_36X_TRIO3D_1X_2X},
1206 {0, 0, 0, 0, 0, 0, 0}
1210 MODULE_DEVICE_TABLE(pci, s3_devices);
1212 static struct pci_driver s3fb_pci_driver = {
1214 .id_table = s3_devices,
1215 .probe = s3_pci_probe,
1216 .remove = __devexit_p(s3_pci_remove),
1217 .suspend = s3_pci_suspend,
1218 .resume = s3_pci_resume,
1221 /* Parse user speficied options */
1224 static int __init s3fb_setup(char *options)
1228 if (!options || !*options)
1231 while ((opt = strsep(&options, ",")) != NULL) {
1236 else if (!strncmp(opt, "mtrr:", 5))
1237 mtrr = simple_strtoul(opt + 5, NULL, 0);
1239 else if (!strncmp(opt, "fasttext:", 9))
1240 fasttext = simple_strtoul(opt + 9, NULL, 0);
1251 static void __exit s3fb_cleanup(void)
1253 pr_debug("s3fb: cleaning up\n");
1254 pci_unregister_driver(&s3fb_pci_driver);
1257 /* Driver Initialisation */
1259 static int __init s3fb_init(void)
1263 char *option = NULL;
1265 if (fb_get_options("s3fb", &option))
1270 pr_debug("s3fb: initializing\n");
1271 return pci_register_driver(&s3fb_pci_driver);
1274 /* ------------------------------------------------------------------------- */
1276 /* Modularization */
1278 module_init(s3fb_init);
1279 module_exit(s3fb_cleanup);