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authorOndrej Zajicek <santiago@crfreenet.org>2007-02-12 03:54:49 -0500
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-02-12 12:48:41 -0500
commita268422de8bf1b4c0cb97987b6c329c9f6a3da4b (patch)
tree521e88fddb250dc193893c07bd889b5a28b7ded5
parent59ae6c6b87711ceb2d1ea5f9e08bb13aee947a29 (diff)
[PATCH] fbdev driver for S3 Trio/Virge
Add a driver for S3 Trio / S3 Virge. Driver is tested with most versions of S3 Trio and with S3 Virge/DX, on i386. (akpm: We kind-of have support for this hardware already, but... virgefb.c - amiga/zorro specific, - broken (according to Kconfig), - uses obsolete/nonexistent interface (struct display_switch) - recent Adrian Bunk's patch removes this driver S3triofb.c - ppc/openfirmware specific - minimal functionality - broken (according to Kconfig), - uses obsolete/nonexistent interface (struct display_switch) ) Signed-off-by: Ondrej Zajicek <santiago@crfreenet.org> Cc: James Simmons <jsimmons@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat
-rw-r--r--Documentation/fb/s3fb.txt78
-rw-r--r--drivers/video/Kconfig19
-rw-r--r--drivers/video/Makefile2
-rw-r--r--drivers/video/s3fb.c1180
-rw-r--r--drivers/video/svgalib.c632
-rw-r--r--include/linux/fb.h7
-rw-r--r--include/linux/svga.h124
7 files changed, 2042 insertions, 0 deletions
diff --git a/Documentation/fb/s3fb.txt b/Documentation/fb/s3fb.txt
new file mode 100644
index 000000000000..8a04c0da0c91
--- /dev/null
+++ b/Documentation/fb/s3fb.txt
@@ -0,0 +1,78 @@
1
2 s3fb - fbdev driver for S3 Trio/Virge chips
3 ===========================================
4
5
6Supported Hardware
7==================
8
9 S3 Trio32
10 S3 Trio64 (and variants V+, UV+, V2/DX, V2/GX)
11 S3 Virge (and variants VX, DX, GX and GX2+)
12 S3 Plato/PX (completely untested)
13 S3 Aurora64V+ (completely untested)
14
15 - only PCI bus supported
16 - only BIOS initialized VGA devices supported
17 - probably not working on big endian
18
19I tested s3fb on Trio64 (plain, V+ and V2/DX) and Virge (plain, VX, DX),
20all on i386.
21
22
23Supported Features
24==================
25
26 * 4 bpp pseudocolor modes (with 18bit palette, two variants)
27 * 8 bpp pseudocolor mode (with 18bit palette)
28 * 16 bpp truecolor modes (RGB 555 and RGB 565)
29 * 24 bpp truecolor mode (RGB 888) on (only on Virge VX)
30 * 32 bpp truecolor mode (RGB 888) on (not on Virge VX)
31 * text mode (activated by bpp = 0)
32 * interlaced mode variant (not available in text mode)
33 * doublescan mode variant (not available in text mode)
34 * panning in both directions
35 * suspend/resume support
36 * DPMS support
37
38Text mode is supported even in higher resolutions, but there is limitation
39to lower pixclocks (maximum between 50-60 MHz, depending on specific hardware).
40This limitation is not enforced by driver. Text mode supports 8bit wide fonts
41only (hardware limitation) and 16bit tall fonts (driver limitation).
42
43There are two 4 bpp modes. First mode (selected if nonstd == 0) is mode with
44packed pixels, high nibble first. Second mode (selected if nonstd == 1) is mode
45with interleaved planes (1 byte interleave), MSB first. Both modes support
468bit wide fonts only (driver limitation).
47
48Suspend/resume works on systems that initialize video card during resume and
49if device is active (for example used by fbcon).
50
51
52Missing Features
53================
54(alias TODO list)
55
56 * secondary (not initialized by BIOS) device support
57 * big endian support
58 * Zorro bus support
59 * MMIO support
60 * 24 bpp mode support on more cards
61 * support for fontwidths != 8 in 4 bpp modes
62 * support for fontheight != 16 in text mode
63 * composite and external sync (is anyone able to test this?)
64 * hardware cursor
65 * video overlay support
66 * vsync synchronization
67 * feature connector support
68 * acceleration support (8514-like 2D, Virge 3D, busmaster transfers)
69 * better values for some magic registers (performance issues)
70
71
72Known bugs
73==========
74
75 * cursor disable in text mode doesn't work
76
77--
78Ondrej Zajicek <santiago@crfreenet.org>
diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig
index 45fe65d8d7a0..3ab063172644 100644
--- a/drivers/video/Kconfig
+++ b/drivers/video/Kconfig
@@ -85,6 +85,14 @@ config FB_CFB_IMAGEBLIT
85 blitting. This is used by drivers that don't provide their own 85 blitting. This is used by drivers that don't provide their own
86 (accelerated) version. 86 (accelerated) version.
87 87
88config FB_SVGALIB
89 tristate
90 depends on FB
91 default n
92 ---help---
93 Common utility functions useful to fbdev drivers of VGA-based
94 cards.
95
88config FB_MACMODES 96config FB_MACMODES
89 tristate 97 tristate
90 depends on FB 98 depends on FB
@@ -1147,6 +1155,17 @@ config FB_S3TRIO
1147 help 1155 help
1148 If you have a S3 Trio say Y. Say N for S3 Virge. 1156 If you have a S3 Trio say Y. Say N for S3 Virge.
1149 1157
1158config FB_S3
1159 tristate "S3 Trio/Virge support"
1160 depends on FB && PCI
1161 select FB_CFB_FILLRECT
1162 select FB_CFB_COPYAREA
1163 select FB_CFB_IMAGEBLIT
1164 select FB_TILEBLITTING
1165 select FB_SVGALIB
1166 ---help---
1167 Driver for graphics boards with S3 Trio / S3 Virge chip.
1168
1150config FB_SAVAGE 1169config FB_SAVAGE
1151 tristate "S3 Savage support" 1170 tristate "S3 Savage support"
1152 depends on FB && PCI && EXPERIMENTAL 1171 depends on FB && PCI && EXPERIMENTAL
diff --git a/drivers/video/Makefile b/drivers/video/Makefile
index 309a26dd164a..d4e2b152160e 100644
--- a/drivers/video/Makefile
+++ b/drivers/video/Makefile
@@ -17,6 +17,7 @@ obj-$(CONFIG_SYSFS) += backlight/
17obj-$(CONFIG_FB_CFB_FILLRECT) += cfbfillrect.o 17obj-$(CONFIG_FB_CFB_FILLRECT) += cfbfillrect.o
18obj-$(CONFIG_FB_CFB_COPYAREA) += cfbcopyarea.o 18obj-$(CONFIG_FB_CFB_COPYAREA) += cfbcopyarea.o
19obj-$(CONFIG_FB_CFB_IMAGEBLIT) += cfbimgblt.o 19obj-$(CONFIG_FB_CFB_IMAGEBLIT) += cfbimgblt.o
20obj-$(CONFIG_FB_SVGALIB) += svgalib.o
20obj-$(CONFIG_FB_MACMODES) += macmodes.o 21obj-$(CONFIG_FB_MACMODES) += macmodes.o
21obj-$(CONFIG_FB_DDC) += fb_ddc.o 22obj-$(CONFIG_FB_DDC) += fb_ddc.o
22 23
@@ -54,6 +55,7 @@ obj-$(CONFIG_FB_S3TRIO) += S3triofb.o
54obj-$(CONFIG_FB_FM2) += fm2fb.o 55obj-$(CONFIG_FB_FM2) += fm2fb.o
55obj-$(CONFIG_FB_CYBLA) += cyblafb.o 56obj-$(CONFIG_FB_CYBLA) += cyblafb.o
56obj-$(CONFIG_FB_TRIDENT) += tridentfb.o 57obj-$(CONFIG_FB_TRIDENT) += tridentfb.o
58obj-$(CONFIG_FB_S3) += s3fb.o vgastate.o
57obj-$(CONFIG_FB_STI) += stifb.o 59obj-$(CONFIG_FB_STI) += stifb.o
58obj-$(CONFIG_FB_FFB) += ffb.o sbuslib.o 60obj-$(CONFIG_FB_FFB) += ffb.o sbuslib.o
59obj-$(CONFIG_FB_CG6) += cg6.o sbuslib.o 61obj-$(CONFIG_FB_CG6) += cg6.o sbuslib.o
diff --git a/drivers/video/s3fb.c b/drivers/video/s3fb.c
new file mode 100644
index 000000000000..3162c37b1447
--- /dev/null
+++ b/drivers/video/s3fb.c
@@ -0,0 +1,1180 @@
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/version.h>
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>
20#include <linux/tty.h>
21#include <linux/slab.h>
22#include <linux/delay.h>
23#include <linux/fb.h>
24#include <linux/svga.h>
25#include <linux/init.h>
26#include <linux/pci.h>
27#include <linux/console.h> /* Why should fb driver call console functions? because acquire_console_sem() */
28#include <video/vga.h>
29
30#ifdef CONFIG_MTRR
31#include <asm/mtrr.h>
32#endif
33
34struct s3fb_info {
35 int chip, rev, mclk_freq;
36 int mtrr_reg;
37 struct vgastate state;
38 struct mutex open_lock;
39 unsigned int ref_count;
40 u32 pseudo_palette[16];
41};
42
43
44/* ------------------------------------------------------------------------- */
45
46static const struct svga_fb_format s3fb_formats[] = {
47 { 0, {0, 6, 0}, {0, 6, 0}, {0, 6, 0}, {0, 0, 0}, 0,
48 FB_TYPE_TEXT, FB_AUX_TEXT_SVGA_STEP4, FB_VISUAL_PSEUDOCOLOR, 8, 16},
49 { 4, {0, 6, 0}, {0, 6, 0}, {0, 6, 0}, {0, 0, 0}, 0,
50 FB_TYPE_PACKED_PIXELS, 0, FB_VISUAL_PSEUDOCOLOR, 8, 16},
51 { 4, {0, 6, 0}, {0, 6, 0}, {0, 6, 0}, {0, 0, 0}, 1,
52 FB_TYPE_INTERLEAVED_PLANES, 1, FB_VISUAL_PSEUDOCOLOR, 8, 16},
53 { 8, {0, 6, 0}, {0, 6, 0}, {0, 6, 0}, {0, 0, 0}, 0,
54 FB_TYPE_PACKED_PIXELS, 0, FB_VISUAL_PSEUDOCOLOR, 4, 8},
55 {16, {10, 5, 0}, {5, 5, 0}, {0, 5, 0}, {0, 0, 0}, 0,
56 FB_TYPE_PACKED_PIXELS, 0, FB_VISUAL_TRUECOLOR, 2, 4},
57 {16, {11, 5, 0}, {5, 6, 0}, {0, 5, 0}, {0, 0, 0}, 0,
58 FB_TYPE_PACKED_PIXELS, 0, FB_VISUAL_TRUECOLOR, 2, 4},
59 {24, {16, 8, 0}, {8, 8, 0}, {0, 8, 0}, {0, 0, 0}, 0,
60 FB_TYPE_PACKED_PIXELS, 0, FB_VISUAL_TRUECOLOR, 1, 2},
61 {32, {16, 8, 0}, {8, 8, 0}, {0, 8, 0}, {0, 0, 0}, 0,
62 FB_TYPE_PACKED_PIXELS, 0, FB_VISUAL_TRUECOLOR, 1, 2},
63 SVGA_FORMAT_END
64};
65
66
67static const struct svga_pll s3_pll = {3, 129, 3, 33, 0, 3,
68 60000, 240000, 14318};
69
70static const int s3_memsizes[] = {4096, 0, 3072, 8192, 2048, 6144, 1024, 512};
71
72static const char * const s3_names[] = {"S3 Unknown", "S3 Trio32", "S3 Trio64", "S3 Trio64V+",
73 "S3 Trio64UV+", "S3 Trio64V2/DX", "S3 Trio64V2/GX",
74 "S3 Plato/PX", "S3 Aurora64VP", "S3 Virge",
75 "S3 Virge/VX", "S3 Virge/DX", "S3 Virge/GX",
76 "S3 Virge/GX2", "S3 Virge/GX2P", "S3 Virge/GX2P"};
77
78#define CHIP_UNKNOWN 0x00
79#define CHIP_732_TRIO32 0x01
80#define CHIP_764_TRIO64 0x02
81#define CHIP_765_TRIO64VP 0x03
82#define CHIP_767_TRIO64UVP 0x04
83#define CHIP_775_TRIO64V2_DX 0x05
84#define CHIP_785_TRIO64V2_GX 0x06
85#define CHIP_551_PLATO_PX 0x07
86#define CHIP_M65_AURORA64VP 0x08
87#define CHIP_325_VIRGE 0x09
88#define CHIP_988_VIRGE_VX 0x0A
89#define CHIP_375_VIRGE_DX 0x0B
90#define CHIP_385_VIRGE_GX 0x0C
91#define CHIP_356_VIRGE_GX2 0x0D
92#define CHIP_357_VIRGE_GX2P 0x0E
93#define CHIP_359_VIRGE_GX2P 0x0F
94
95#define CHIP_XXX_TRIO 0x80
96#define CHIP_XXX_TRIO64V2_DXGX 0x81
97#define CHIP_XXX_VIRGE_DXGX 0x82
98
99#define CHIP_UNDECIDED_FLAG 0x80
100#define CHIP_MASK 0xFF
101
102/* CRT timing register sets */
103
104static const struct vga_regset s3_h_total_regs[] = {{0x00, 0, 7}, {0x5D, 0, 0}, VGA_REGSET_END};
105static const struct vga_regset s3_h_display_regs[] = {{0x01, 0, 7}, {0x5D, 1, 1}, VGA_REGSET_END};
106static const struct vga_regset s3_h_blank_start_regs[] = {{0x02, 0, 7}, {0x5D, 2, 2}, VGA_REGSET_END};
107static const struct vga_regset s3_h_blank_end_regs[] = {{0x03, 0, 4}, {0x05, 7, 7}, VGA_REGSET_END};
108static const struct vga_regset s3_h_sync_start_regs[] = {{0x04, 0, 7}, {0x5D, 4, 4}, VGA_REGSET_END};
109static const struct vga_regset s3_h_sync_end_regs[] = {{0x05, 0, 4}, VGA_REGSET_END};
110
111static const struct vga_regset s3_v_total_regs[] = {{0x06, 0, 7}, {0x07, 0, 0}, {0x07, 5, 5}, {0x5E, 0, 0}, VGA_REGSET_END};
112static const struct vga_regset s3_v_display_regs[] = {{0x12, 0, 7}, {0x07, 1, 1}, {0x07, 6, 6}, {0x5E, 1, 1}, VGA_REGSET_END};
113static const struct vga_regset s3_v_blank_start_regs[] = {{0x15, 0, 7}, {0x07, 3, 3}, {0x09, 5, 5}, {0x5E, 2, 2}, VGA_REGSET_END};
114static const struct vga_regset s3_v_blank_end_regs[] = {{0x16, 0, 7}, VGA_REGSET_END};
115static const struct vga_regset s3_v_sync_start_regs[] = {{0x10, 0, 7}, {0x07, 2, 2}, {0x07, 7, 7}, {0x5E, 4, 4}, VGA_REGSET_END};
116static const struct vga_regset s3_v_sync_end_regs[] = {{0x11, 0, 3}, VGA_REGSET_END};
117
118static const struct vga_regset s3_line_compare_regs[] = {{0x18, 0, 7}, {0x07, 4, 4}, {0x09, 6, 6}, {0x5E, 6, 6}, VGA_REGSET_END};
119static const struct vga_regset s3_start_address_regs[] = {{0x0d, 0, 7}, {0x0c, 0, 7}, {0x31, 4, 5}, {0x51, 0, 1}, VGA_REGSET_END};
120static const struct vga_regset s3_offset_regs[] = {{0x13, 0, 7}, {0x51, 4, 5}, VGA_REGSET_END}; /* set 0x43 bit 2 to 0 */
121
122static const struct svga_timing_regs s3_timing_regs = {
123 s3_h_total_regs, s3_h_display_regs, s3_h_blank_start_regs,
124 s3_h_blank_end_regs, s3_h_sync_start_regs, s3_h_sync_end_regs,
125 s3_v_total_regs, s3_v_display_regs, s3_v_blank_start_regs,
126 s3_v_blank_end_regs, s3_v_sync_start_regs, s3_v_sync_end_regs,
127};
128
129
130/* ------------------------------------------------------------------------- */
131
132/* Module parameters */
133
134
135static char *mode = "640x480-8@60";
136
137#ifdef CONFIG_MTRR
138static int mtrr = 1;
139#endif
140
141static int fasttext = 1;
142
143
144MODULE_AUTHOR("(c) 2006-2007 Ondrej Zajicek <santiago@crfreenet.org>");
145MODULE_LICENSE("GPL");
146MODULE_DESCRIPTION("fbdev driver for S3 Trio/Virge");
147
148module_param(mode, charp, 0444);
149MODULE_PARM_DESC(mode, "Default video mode ('640x480-8@60', etc)");
150
151#ifdef CONFIG_MTRR
152module_param(mtrr, int, 0444);
153MODULE_PARM_DESC(mtrr, "Enable write-combining with MTRR (1=enable, 0=disable, default=1)");
154#endif
155
156module_param(fasttext, int, 0644);
157MODULE_PARM_DESC(fasttext, "Enable S3 fast text mode (1=enable, 0=disable, default=1)");
158
159
160/* ------------------------------------------------------------------------- */
161
162/* Set font in S3 fast text mode */
163
164static void s3fb_settile_fast(struct fb_info *info, struct fb_tilemap *map)
165{
166 const u8 *font = map->data;
167 u8* fb = (u8 *) info->screen_base;
168 int i, c;
169
170 if ((map->width != 8) || (map->height != 16) ||
171 (map->depth != 1) || (map->length != 256)) {
172 printk(KERN_ERR "fb%d: unsupported font parameters: width %d, height %d, depth %d, length %d\n",
173 info->node, map->width, map->height, map->depth, map->length);
174 return;
175 }
176
177 fb += 2;
178 for (i = 0; i < map->height; i++) {
179 for (c = 0; c < map->length; c++) {
180 fb[c * 4] = font[c * map->height + i];
181 }
182 fb += 1024;
183 }
184}
185
186
187
188static struct fb_tile_ops s3fb_tile_ops = {
189 .fb_settile = svga_settile,
190 .fb_tilecopy = svga_tilecopy,
191 .fb_tilefill = svga_tilefill,
192 .fb_tileblit = svga_tileblit,
193 .fb_tilecursor = svga_tilecursor,
194};
195
196static struct fb_tile_ops s3fb_fast_tile_ops = {
197 .fb_settile = s3fb_settile_fast,
198 .fb_tilecopy = svga_tilecopy,
199 .fb_tilefill = svga_tilefill,
200 .fb_tileblit = svga_tileblit,
201 .fb_tilecursor = svga_tilecursor,
202};
203
204
205/* ------------------------------------------------------------------------- */
206
207/* image data is MSB-first, fb structure is MSB-first too */
208static inline u32 expand_color(u32 c)
209{
210 return ((c & 1) | ((c & 2) << 7) | ((c & 4) << 14) | ((c & 8) << 21)) * 0xFF;
211}
212
213/* s3fb_iplan_imageblit silently assumes that almost everything is 8-pixel aligned */
214static void s3fb_iplan_imageblit(struct fb_info *info, const struct fb_image *image)
215{
216 u32 fg = expand_color(image->fg_color);
217 u32 bg = expand_color(image->bg_color);
218 const u8 *src1, *src;
219 u8 __iomem *dst1;
220 u32 __iomem *dst;
221 u32 val;
222 int x, y;
223
224 src1 = image->data;
225 dst1 = info->screen_base + (image->dy * info->fix.line_length)
226 + ((image->dx / 8) * 4);
227
228 for (y = 0; y < image->height; y++) {
229 src = src1;
230 dst = (u32 __iomem *) dst1;
231 for (x = 0; x < image->width; x += 8) {
232 val = *(src++) * 0x01010101;
233 val = (val & fg) | (~val & bg);
234 fb_writel(val, dst++);
235 }
236 src1 += image->width / 8;
237 dst1 += info->fix.line_length;
238 }
239
240}
241
242/* s3fb_iplan_fillrect silently assumes that almost everything is 8-pixel aligned */
243static void s3fb_iplan_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
244{
245 u32 fg = expand_color(rect->color);
246 u8 __iomem *dst1;
247 u32 __iomem *dst;
248 int x, y;
249
250 dst1 = info->screen_base + (rect->dy * info->fix.line_length)
251 + ((rect->dx / 8) * 4);
252
253 for (y = 0; y < rect->height; y++) {
254 dst = (u32 __iomem *) dst1;
255 for (x = 0; x < rect->width; x += 8) {
256 fb_writel(fg, dst++);
257 }
258 dst1 += info->fix.line_length;
259 }
260}
261
262
263/* image data is MSB-first, fb structure is high-nibble-in-low-byte-first */
264static inline u32 expand_pixel(u32 c)
265{
266 return (((c & 1) << 24) | ((c & 2) << 27) | ((c & 4) << 14) | ((c & 8) << 17) |
267 ((c & 16) << 4) | ((c & 32) << 7) | ((c & 64) >> 6) | ((c & 128) >> 3)) * 0xF;
268}
269
270/* s3fb_cfb4_imageblit silently assumes that almost everything is 8-pixel aligned */
271static void s3fb_cfb4_imageblit(struct fb_info *info, const struct fb_image *image)
272{
273 u32 fg = image->fg_color * 0x11111111;
274 u32 bg = image->bg_color * 0x11111111;
275 const u8 *src1, *src;
276 u8 __iomem *dst1;
277 u32 __iomem *dst;
278 u32 val;
279 int x, y;
280
281 src1 = image->data;
282 dst1 = info->screen_base + (image->dy * info->fix.line_length)
283 + ((image->dx / 8) * 4);
284
285 for (y = 0; y < image->height; y++) {
286 src = src1;
287 dst = (u32 __iomem *) dst1;
288 for (x = 0; x < image->width; x += 8) {
289 val = expand_pixel(*(src++));
290 val = (val & fg) | (~val & bg);
291 fb_writel(val, dst++);
292 }
293 src1 += image->width / 8;
294 dst1 += info->fix.line_length;
295 }
296}
297
298static void s3fb_imageblit(struct fb_info *info, const struct fb_image *image)
299{
300 if ((info->var.bits_per_pixel == 4) && (image->depth == 1)
301 && ((image->width % 8) == 0) && ((image->dx % 8) == 0)) {
302 if (info->fix.type == FB_TYPE_INTERLEAVED_PLANES)
303 s3fb_iplan_imageblit(info, image);
304 else
305 s3fb_cfb4_imageblit(info, image);
306 } else
307 cfb_imageblit(info, image);
308}
309
310static void s3fb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
311{
312 if ((info->var.bits_per_pixel == 4)
313 && ((rect->width % 8) == 0) && ((rect->dx % 8) == 0)
314 && (info->fix.type == FB_TYPE_INTERLEAVED_PLANES))
315 s3fb_iplan_fillrect(info, rect);
316 else
317 cfb_fillrect(info, rect);
318}
319
320
321
322/* ------------------------------------------------------------------------- */
323
324
325static void s3_set_pixclock(struct fb_info *info, u32 pixclock)
326{
327 u16 m, n, r;
328 u8 regval;
329
330 svga_compute_pll(&s3_pll, 1000000000 / pixclock, &m, &n, &r, info->node);
331
332 /* Set VGA misc register */
333 regval = vga_r(NULL, VGA_MIS_R);
334 vga_w(NULL, VGA_MIS_W, regval | VGA_MIS_ENB_PLL_LOAD);
335
336 /* Set S3 clock registers */
337 vga_wseq(NULL, 0x12, ((n - 2) | (r << 5)));
338 vga_wseq(NULL, 0x13, m - 2);
339
340 udelay(1000);
341
342 /* Activate clock - write 0, 1, 0 to seq/15 bit 5 */
343 regval = vga_rseq (NULL, 0x15); /* | 0x80; */
344 vga_wseq(NULL, 0x15, regval & ~(1<<5));
345 vga_wseq(NULL, 0x15, regval | (1<<5));
346 vga_wseq(NULL, 0x15, regval & ~(1<<5));
347}
348
349
350/* Open framebuffer */
351
352static int s3fb_open(struct fb_info *info, int user)
353{
354 struct s3fb_info *par = info->par;
355
356 mutex_lock(&(par->open_lock));
357 if (par->ref_count == 0) {
358 memset(&(par->state), 0, sizeof(struct vgastate));
359 par->state.flags = VGA_SAVE_MODE | VGA_SAVE_FONTS | VGA_SAVE_CMAP;
360 par->state.num_crtc = 0x70;
361 par->state.num_seq = 0x20;
362 save_vga(&(par->state));
363 }
364
365 par->ref_count++;
366 mutex_unlock(&(par->open_lock));
367
368 return 0;
369}
370
371/* Close framebuffer */
372
373static int s3fb_release(struct fb_info *info, int user)
374{
375 struct s3fb_info *par = info->par;
376
377 mutex_lock(&(par->open_lock));
378 if (par->ref_count == 0) {
379 mutex_unlock(&(par->open_lock));
380 return -EINVAL;
381 }
382
383 if (par->ref_count == 1)
384 restore_vga(&(par->state));
385
386 par->ref_count--;
387 mutex_unlock(&(par->open_lock));
388
389 return 0;
390}
391
392/* Validate passed in var */
393
394static int s3fb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
395{
396 struct s3fb_info *par = info->par;
397 int rv, mem, step;
398
399 /* Find appropriate format */
400 rv = svga_match_format (s3fb_formats, var, NULL);
401 if ((rv < 0) || ((par->chip == CHIP_988_VIRGE_VX) ? (rv == 7) : (rv == 6)))
402 { /* 24bpp on VIRGE VX, 32bpp on others */
403 printk(KERN_ERR "fb%d: unsupported mode requested\n", info->node);
404 return rv;
405 }
406
407 /* Do not allow to have real resoulution larger than virtual */
408 if (var->xres > var->xres_virtual)
409 var->xres_virtual = var->xres;
410
411 if (var->yres > var->yres_virtual)
412 var->yres_virtual = var->yres;
413
414 /* Round up xres_virtual to have proper alignment of lines */
415 step = s3fb_formats[rv].xresstep - 1;
416 var->xres_virtual = (var->xres_virtual+step) & ~step;
417
418 /* Check whether have enough memory */
419 mem = ((var->bits_per_pixel * var->xres_virtual) >> 3) * var->yres_virtual;
420 if (mem > info->screen_size)
421 {
422 printk(KERN_ERR "fb%d: not enough framebuffer memory (%d kB requested , %d kB available)\n",
423 info->node, mem >> 10, (unsigned int) (info->screen_size >> 10));
424 return -EINVAL;
425 }
426
427 rv = svga_check_timings (&s3_timing_regs, var, info->node);
428 if (rv < 0)
429 {
430 printk(KERN_ERR "fb%d: invalid timings requested\n", info->node);
431 return rv;
432 }
433
434 return 0;
435}
436
437/* Set video mode from par */
438
439static int s3fb_set_par(struct fb_info *info)
440{
441 struct s3fb_info *par = info->par;
442 u32 value, mode, hmul, offset_value, screen_size, multiplex;
443 u32 bpp = info->var.bits_per_pixel;
444
445 if (bpp != 0) {
446 info->fix.ypanstep = 1;
447 info->fix.line_length = (info->var.xres_virtual * bpp) / 8;
448
449 info->flags &= ~FBINFO_MISC_TILEBLITTING;
450 info->tileops = NULL;
451
452 offset_value = (info->var.xres_virtual * bpp) / 64;
453 screen_size = info->var.yres_virtual * info->fix.line_length;
454 } else {
455 info->fix.ypanstep = 16;
456 info->fix.line_length = 0;
457
458 info->flags |= FBINFO_MISC_TILEBLITTING;
459 info->tileops = fasttext ? &s3fb_fast_tile_ops : &s3fb_tile_ops;
460
461 offset_value = info->var.xres_virtual / 16;
462 screen_size = (info->var.xres_virtual * info->var.yres_virtual) / 64;
463 }
464
465 info->var.xoffset = 0;
466 info->var.yoffset = 0;
467 info->var.activate = FB_ACTIVATE_NOW;
468
469 /* Unlock registers */
470 vga_wcrt(NULL, 0x38, 0x48);
471 vga_wcrt(NULL, 0x39, 0xA5);
472 vga_wseq(NULL, 0x08, 0x06);
473 svga_wcrt_mask(0x11, 0x00, 0x80);
474
475 /* Blank screen and turn off sync */
476 svga_wseq_mask(0x01, 0x20, 0x20);
477 svga_wcrt_mask(0x17, 0x00, 0x80);
478
479 /* Set default values */
480 svga_set_default_gfx_regs();
481 svga_set_default_atc_regs();
482 svga_set_default_seq_regs();
483 svga_set_default_crt_regs();
484 svga_wcrt_multi(s3_line_compare_regs, 0xFFFFFFFF);
485 svga_wcrt_multi(s3_start_address_regs, 0);
486
487 /* S3 specific initialization */
488 svga_wcrt_mask(0x58, 0x10, 0x10); /* enable linear framebuffer */
489 svga_wcrt_mask(0x31, 0x08, 0x08); /* enable sequencer access to framebuffer above 256 kB */
490
491/* svga_wcrt_mask(0x33, 0x08, 0x08); */ /* DDR ? */
492/* svga_wcrt_mask(0x43, 0x01, 0x01); */ /* DDR ? */
493 svga_wcrt_mask(0x33, 0x00, 0x08); /* no DDR ? */
494 svga_wcrt_mask(0x43, 0x00, 0x01); /* no DDR ? */
495
496 svga_wcrt_mask(0x5D, 0x00, 0x28); // Clear strange HSlen bits
497
498/* svga_wcrt_mask(0x58, 0x03, 0x03); */
499
500/* svga_wcrt_mask(0x53, 0x12, 0x13); */ /* enable MMIO */
501/* svga_wcrt_mask(0x40, 0x08, 0x08); */ /* enable write buffer */
502
503
504 /* Set the offset register */
505 pr_debug("fb%d: offset register : %d\n", info->node, offset_value);
506 svga_wcrt_multi(s3_offset_regs, offset_value);
507
508 vga_wcrt(NULL, 0x54, 0x18); /* M parameter */
509 vga_wcrt(NULL, 0x60, 0xff); /* N parameter */
510 vga_wcrt(NULL, 0x61, 0xff); /* L parameter */
511 vga_wcrt(NULL, 0x62, 0xff); /* L parameter */
512
513 vga_wcrt(NULL, 0x3A, 0x35);
514 svga_wattr(0x33, 0x00);
515
516 if (info->var.vmode & FB_VMODE_DOUBLE)
517 svga_wcrt_mask(0x09, 0x80, 0x80);
518 else
519 svga_wcrt_mask(0x09, 0x00, 0x80);
520
521 if (info->var.vmode & FB_VMODE_INTERLACED)
522 svga_wcrt_mask(0x42, 0x20, 0x20);
523 else
524 svga_wcrt_mask(0x42, 0x00, 0x20);
525
526 /* Disable hardware graphics cursor */
527 svga_wcrt_mask(0x45, 0x00, 0x01);
528 /* Disable Streams engine */
529 svga_wcrt_mask(0x67, 0x00, 0x0C);
530
531 mode = svga_match_format(s3fb_formats, &(info->var), &(info->fix));
532
533 /* S3 virge DX hack */
534 if (par->chip == CHIP_375_VIRGE_DX) {
535 vga_wcrt(NULL, 0x86, 0x80);
536 vga_wcrt(NULL, 0x90, 0x00);
537 }
538
539 /* S3 virge VX hack */
540 if (par->chip == CHIP_988_VIRGE_VX) {
541 vga_wcrt(NULL, 0x50, 0x00);
542 vga_wcrt(NULL, 0x67, 0x50);
543
544 vga_wcrt(NULL, 0x63, (mode <= 2) ? 0x90 : 0x09);
545 vga_wcrt(NULL, 0x66, 0x90);
546 }
547
548 svga_wcrt_mask(0x31, 0x00, 0x40);
549 multiplex = 0;
550 hmul = 1;
551
552 /* Set mode-specific register values */
553 switch (mode) {
554 case 0:
555 pr_debug("fb%d: text mode\n", info->node);
556 svga_set_textmode_vga_regs();
557
558 /* Set additional registers like in 8-bit mode */
559 svga_wcrt_mask(0x50, 0x00, 0x30);
560 svga_wcrt_mask(0x67, 0x00, 0xF0);
561
562 /* Disable enhanced mode */
563 svga_wcrt_mask(0x3A, 0x00, 0x30);
564
565 if (fasttext) {
566 pr_debug("fb%d: high speed text mode set\n", info->node);
567 svga_wcrt_mask(0x31, 0x40, 0x40);
568 }
569 break;
570 case 1:
571 pr_debug("fb%d: 4 bit pseudocolor\n", info->node);
572 vga_wgfx(NULL, VGA_GFX_MODE, 0x40);
573
574 /* Set additional registers like in 8-bit mode */
575 svga_wcrt_mask(0x50, 0x00, 0x30);
576 svga_wcrt_mask(0x67, 0x00, 0xF0);
577
578 /* disable enhanced mode */
579 svga_wcrt_mask(0x3A, 0x00, 0x30);
580 break;
581 case 2:
582 pr_debug("fb%d: 4 bit pseudocolor, planar\n", info->node);
583
584 /* Set additional registers like in 8-bit mode */
585 svga_wcrt_mask(0x50, 0x00, 0x30);
586 svga_wcrt_mask(0x67, 0x00, 0xF0);
587
588 /* disable enhanced mode */
589 svga_wcrt_mask(0x3A, 0x00, 0x30);
590 break;
591 case 3:
592 pr_debug("fb%d: 8 bit pseudocolor\n", info->node);
593 if (info->var.pixclock > 20000) {
594 svga_wcrt_mask(0x50, 0x00, 0x30);
595 svga_wcrt_mask(0x67, 0x00, 0xF0);
596 } else {
597 svga_wcrt_mask(0x50, 0x00, 0x30);
598 svga_wcrt_mask(0x67, 0x10, 0xF0);
599 multiplex = 1;
600 }
601 break;
602 case 4:
603 pr_debug("fb%d: 5/5/5 truecolor\n", info->node);
604 if (par->chip == CHIP_988_VIRGE_VX) {
605 if (info->var.pixclock > 20000)
606 svga_wcrt_mask(0x67, 0x20, 0xF0);
607 else
608 svga_wcrt_mask(0x67, 0x30, 0xF0);
609 } else {
610 svga_wcrt_mask(0x50, 0x10, 0x30);
611 svga_wcrt_mask(0x67, 0x30, 0xF0);
612 hmul = 2;
613 }
614 break;
615 case 5:
616 pr_debug("fb%d: 5/6/5 truecolor\n", info->node);
617 if (par->chip == CHIP_988_VIRGE_VX) {
618 if (info->var.pixclock > 20000)
619 svga_wcrt_mask(0x67, 0x40, 0xF0);
620 else
621 svga_wcrt_mask(0x67, 0x50, 0xF0);
622 } else {
623 svga_wcrt_mask(0x50, 0x10, 0x30);
624 svga_wcrt_mask(0x67, 0x50, 0xF0);
625 hmul = 2;
626 }
627 break;
628 case 6:
629 /* VIRGE VX case */
630 pr_debug("fb%d: 8/8/8 truecolor\n", info->node);
631 svga_wcrt_mask(0x67, 0xD0, 0xF0);
632 break;
633 case 7:
634 pr_debug("fb%d: 8/8/8/8 truecolor\n", info->node);
635 svga_wcrt_mask(0x50, 0x30, 0x30);
636 svga_wcrt_mask(0x67, 0xD0, 0xF0);
637 break;
638 default:
639 printk(KERN_ERR "fb%d: unsupported mode - bug\n", info->node);
640 return -EINVAL;
641 }
642
643 if (par->chip != CHIP_988_VIRGE_VX) {
644 svga_wseq_mask(0x15, multiplex ? 0x10 : 0x00, 0x10);
645 svga_wseq_mask(0x18, multiplex ? 0x80 : 0x00, 0x80);
646 }
647
648 s3_set_pixclock(info, info->var.pixclock);
649 svga_set_timings(&s3_timing_regs, &(info->var), hmul, 1,
650 (info->var.vmode & FB_VMODE_DOUBLE) ? 2 : 1,
651 (info->var.vmode & FB_VMODE_INTERLACED) ? 2 : 1,
652 hmul, info->node);
653
654 /* Set interlaced mode start/end register */
655 value = info->var.xres + info->var.left_margin + info->var.right_margin + info->var.hsync_len;
656 value = ((value * hmul) / 8) - 5;
657 vga_wcrt(NULL, 0x3C, (value + 1) / 2);
658
659 memset((u8*)info->screen_base, 0x00, screen_size);
660 /* Device and screen back on */
661 svga_wcrt_mask(0x17, 0x80, 0x80);
662 svga_wseq_mask(0x01, 0x00, 0x20);
663
664 return 0;
665}
666
667/* Set a colour register */
668
669static int s3fb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
670 u_int transp, struct fb_info *fb)
671{
672 switch (fb->var.bits_per_pixel) {
673 case 0:
674 case 4:
675 if (regno >= 16)
676 return -EINVAL;
677
678 if ((fb->var.bits_per_pixel == 4) &&
679 (fb->var.nonstd == 0)) {
680 outb(0xF0, VGA_PEL_MSK);
681 outb(regno*16, VGA_PEL_IW);
682 } else {
683 outb(0x0F, VGA_PEL_MSK);
684 outb(regno, VGA_PEL_IW);
685 }
686 outb(red >> 10, VGA_PEL_D);
687 outb(green >> 10, VGA_PEL_D);
688 outb(blue >> 10, VGA_PEL_D);
689 break;
690 case 8:
691 if (regno >= 256)
692 return -EINVAL;
693
694 outb(0xFF, VGA_PEL_MSK);
695 outb(regno, VGA_PEL_IW);
696 outb(red >> 10, VGA_PEL_D);
697 outb(green >> 10, VGA_PEL_D);
698 outb(blue >> 10, VGA_PEL_D);
699 break;
700 case 16:
701 if (regno >= 16)
702 return -EINVAL;
703
704 if (fb->var.green.length == 5)
705 ((u32*)fb->pseudo_palette)[regno] = ((red & 0xF800) >> 1) |
706 ((green & 0xF800) >> 6) | ((blue & 0xF800) >> 11);
707 else if (fb->var.green.length == 6)
708 ((u32*)fb->pseudo_palette)[regno] = (red & 0xF800) |
709 ((green & 0xFC00) >> 5) | ((blue & 0xF800) >> 11);
710 else return -EINVAL;
711 break;
712 case 24:
713 case 32:
714 if (regno >= 16)
715 return -EINVAL;
716
717 ((u32*)fb->pseudo_palette)[regno] = ((transp & 0xFF00) << 16) | ((red & 0xFF00) << 8) |
718 (green & 0xFF00) | ((blue & 0xFF00) >> 8);
719 break;
720 default:
721 return -EINVAL;
722 }
723
724 return 0;
725}
726
727
728/* Set the display blanking state */
729
730static int s3fb_blank(int blank_mode, struct fb_info *info)
731{
732 switch (blank_mode) {
733 case FB_BLANK_UNBLANK:
734 pr_debug("fb%d: unblank\n", info->node);
735 svga_wcrt_mask(0x56, 0x00, 0x06);
736 svga_wseq_mask(0x01, 0x00, 0x20);
737 break;
738 case FB_BLANK_NORMAL:
739 pr_debug("fb%d: blank\n", info->node);
740 svga_wcrt_mask(0x56, 0x00, 0x06);
741 svga_wseq_mask(0x01, 0x20, 0x20);
742 break;
743 case FB_BLANK_HSYNC_SUSPEND:
744 pr_debug("fb%d: hsync\n", info->node);
745 svga_wcrt_mask(0x56, 0x02, 0x06);
746 svga_wseq_mask(0x01, 0x20, 0x20);
747 break;
748 case FB_BLANK_VSYNC_SUSPEND:
749 pr_debug("fb%d: vsync\n", info->node);
750 svga_wcrt_mask(0x56, 0x04, 0x06);
751 svga_wseq_mask(0x01, 0x20, 0x20);
752 break;
753 case FB_BLANK_POWERDOWN:
754 pr_debug("fb%d: sync down\n", info->node);
755 svga_wcrt_mask(0x56, 0x06, 0x06);
756 svga_wseq_mask(0x01, 0x20, 0x20);
757 break;
758 }
759
760 return 0;
761}
762
763
764/* Pan the display */
765
766static int s3fb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info) {
767
768 unsigned int offset;
769
770 /* Validate the offsets */
771 if ((var->xoffset + var->xres) > var->xres_virtual)
772 return -EINVAL;
773 if ((var->yoffset + var->yres) > var->yres_virtual)
774 return -EINVAL;
775
776 /* Calculate the offset */
777 if (var->bits_per_pixel == 0) {
778 offset = (var->yoffset / 16) * (var->xres_virtual / 2) + (var->xoffset / 2);
779 offset = offset >> 2;
780 } else {
781 offset = (var->yoffset * info->fix.line_length) +
782 (var->xoffset * var->bits_per_pixel / 8);
783 offset = offset >> 2;
784 }
785
786 /* Set the offset */
787 svga_wcrt_multi(s3_start_address_regs, offset);
788
789 return 0;
790}
791
792/* ------------------------------------------------------------------------- */
793
794/* Frame buffer operations */
795
796static struct fb_ops s3fb_ops = {
797 .owner = THIS_MODULE,
798 .fb_open = s3fb_open,
799 .fb_release = s3fb_release,
800 .fb_check_var = s3fb_check_var,
801 .fb_set_par = s3fb_set_par,
802 .fb_setcolreg = s3fb_setcolreg,
803 .fb_blank = s3fb_blank,
804 .fb_pan_display = s3fb_pan_display,
805 .fb_fillrect = s3fb_fillrect,
806 .fb_copyarea = cfb_copyarea,
807 .fb_imageblit = s3fb_imageblit,
808};
809
810/* ------------------------------------------------------------------------- */
811
812static int __devinit s3_identification(int chip)
813{
814 if (chip == CHIP_XXX_TRIO) {
815 u8 cr30 = vga_rcrt(NULL, 0x30);
816 u8 cr2e = vga_rcrt(NULL, 0x2e);
817 u8 cr2f = vga_rcrt(NULL, 0x2f);
818
819 if ((cr30 == 0xE0) || (cr30 == 0xE1)) {
820 if (cr2e == 0x10)
821 return CHIP_732_TRIO32;
822 if (cr2e == 0x11) {
823 if (! (cr2f & 0x40))
824 return CHIP_764_TRIO64;
825 else
826 return CHIP_765_TRIO64VP;
827 }
828 }
829 }
830
831 if (chip == CHIP_XXX_TRIO64V2_DXGX) {
832 u8 cr6f = vga_rcrt(NULL, 0x6f);
833
834 if (! (cr6f & 0x01))
835 return CHIP_775_TRIO64V2_DX;
836 else
837 return CHIP_785_TRIO64V2_GX;
838 }
839
840 if (chip == CHIP_XXX_VIRGE_DXGX) {
841 u8 cr6f = vga_rcrt(NULL, 0x6f);
842
843 if (! (cr6f & 0x01))
844 return CHIP_375_VIRGE_DX;
845 else
846 return CHIP_385_VIRGE_GX;
847 }
848
849 return CHIP_UNKNOWN;
850}
851
852
853/* PCI probe */
854
855static int __devinit s3_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
856{
857 struct fb_info *info;
858 struct s3fb_info *par;
859 int rc;
860 u8 regval, cr38, cr39;
861
862 /* Ignore secondary VGA device because there is no VGA arbitration */
863 if (! svga_primary_device(dev)) {
864 dev_info(&(dev->dev), "ignoring secondary device\n");
865 return -ENODEV;
866 }
867
868 /* Allocate and fill driver data structure */
869 info = framebuffer_alloc(sizeof(struct s3fb_info), NULL);
870 if (!info) {
871 dev_err(&(dev->dev), "cannot allocate memory\n");
872 return -ENOMEM;
873 }
874
875 par = info->par;
876 mutex_init(&par->open_lock);
877
878 info->flags = FBINFO_PARTIAL_PAN_OK | FBINFO_HWACCEL_YPAN;
879 info->fbops = &s3fb_ops;
880
881 /* Prepare PCI device */
882 rc = pci_enable_device(dev);
883 if (rc < 0) {
884 dev_err(&(dev->dev), "cannot enable PCI device\n");
885 goto err_enable_device;
886 }
887
888 rc = pci_request_regions(dev, "s3fb");
889 if (rc < 0) {
890 dev_err(&(dev->dev), "cannot reserve framebuffer region\n");
891 goto err_request_regions;
892 }
893
894
895 info->fix.smem_start = pci_resource_start(dev, 0);
896 info->fix.smem_len = pci_resource_len(dev, 0);
897
898 /* Map physical IO memory address into kernel space */
899 info->screen_base = pci_iomap(dev, 0, 0);
900 if (! info->screen_base) {
901 rc = -ENOMEM;
902 dev_err(&(dev->dev), "iomap for framebuffer failed\n");
903 goto err_iomap;
904 }
905
906 /* Unlock regs */
907 cr38 = vga_rcrt(NULL, 0x38);
908 cr39 = vga_rcrt(NULL, 0x39);
909 vga_wseq(NULL, 0x08, 0x06);
910 vga_wcrt(NULL, 0x38, 0x48);
911 vga_wcrt(NULL, 0x39, 0xA5);
912
913 /* Find how many physical memory there is on card */
914 /* 0x36 register is accessible even if other registers are locked */
915 regval = vga_rcrt(NULL, 0x36);
916 info->screen_size = s3_memsizes[regval >> 5] << 10;
917 info->fix.smem_len = info->screen_size;
918
919 par->chip = id->driver_data & CHIP_MASK;
920 par->rev = vga_rcrt(NULL, 0x2f);
921 if (par->chip & CHIP_UNDECIDED_FLAG)
922 par->chip = s3_identification(par->chip);
923
924 /* Find MCLK frequency */
925 regval = vga_rseq(NULL, 0x10);
926 par->mclk_freq = ((vga_rseq(NULL, 0x11) + 2) * 14318) / ((regval & 0x1F) + 2);
927 par->mclk_freq = par->mclk_freq >> (regval >> 5);
928
929 /* Restore locks */
930 vga_wcrt(NULL, 0x38, cr38);
931 vga_wcrt(NULL, 0x39, cr39);
932
933 strcpy(info->fix.id, s3_names [par->chip]);
934 info->fix.mmio_start = 0;
935 info->fix.mmio_len = 0;
936 info->fix.type = FB_TYPE_PACKED_PIXELS;
937 info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
938 info->fix.ypanstep = 0;
939 info->fix.accel = FB_ACCEL_NONE;
940 info->pseudo_palette = (void*) (par->pseudo_palette);
941
942 /* Prepare startup mode */
943 rc = fb_find_mode(&(info->var), info, mode, NULL, 0, NULL, 8);
944 if (! ((rc == 1) || (rc == 2))) {
945 rc = -EINVAL;
946 dev_err(&(dev->dev), "mode %s not found\n", mode);
947 goto err_find_mode;
948 }
949
950 rc = fb_alloc_cmap(&info->cmap, 256, 0);
951 if (rc < 0) {
952 dev_err(&(dev->dev), "cannot allocate colormap\n");
953 goto err_alloc_cmap;
954 }
955
956 rc = register_framebuffer(info);
957 if (rc < 0) {
958 dev_err(&(dev->dev), "cannot register framebuffer\n");
959 goto err_reg_fb;
960 }
961
962 printk(KERN_INFO "fb%d: %s on %s, %d MB RAM, %d MHz MCLK\n", info->node, info->fix.id,
963 pci_name(dev), info->fix.smem_len >> 20, (par->mclk_freq + 500) / 1000);
964
965 if (par->chip == CHIP_UNKNOWN)
966 printk(KERN_INFO "fb%d: unknown chip, CR2D=%x, CR2E=%x, CRT2F=%x, CRT30=%x\n",
967 info->node, vga_rcrt(NULL, 0x2d), vga_rcrt(NULL, 0x2e),
968 vga_rcrt(NULL, 0x2f), vga_rcrt(NULL, 0x30));
969
970 /* Record a reference to the driver data */
971 pci_set_drvdata(dev, info);
972
973#ifdef CONFIG_MTRR
974 if (mtrr) {
975 par->mtrr_reg = -1;
976 par->mtrr_reg = mtrr_add(info->fix.smem_start, info->fix.smem_len, MTRR_TYPE_WRCOMB, 1);
977 }
978#endif
979
980 return 0;
981
982 /* Error handling */
983err_reg_fb:
984 fb_dealloc_cmap(&info->cmap);
985err_alloc_cmap:
986err_find_mode:
987 pci_iounmap(dev, info->screen_base);
988err_iomap:
989 pci_release_regions(dev);
990err_request_regions:
991/* pci_disable_device(dev); */
992err_enable_device:
993 framebuffer_release(info);
994 return rc;
995}
996
997
998/* PCI remove */
999
1000static void __devexit s3_pci_remove(struct pci_dev *dev)
1001{
1002 struct fb_info *info = pci_get_drvdata(dev);
1003 struct s3fb_info *par = info->par;
1004
1005 if (info) {
1006
1007#ifdef CONFIG_MTRR
1008 if (par->mtrr_reg >= 0) {
1009 mtrr_del(par->mtrr_reg, 0, 0);
1010 par->mtrr_reg = -1;
1011 }
1012#endif
1013
1014 unregister_framebuffer(info);
1015 fb_dealloc_cmap(&info->cmap);
1016
1017 pci_iounmap(dev, info->screen_base);
1018 pci_release_regions(dev);
1019/* pci_disable_device(dev); */
1020
1021 pci_set_drvdata(dev, NULL);
1022 framebuffer_release(info);
1023 }
1024}
1025
1026/* PCI suspend */
1027
1028static int s3_pci_suspend(struct pci_dev* dev, pm_message_t state)
1029{
1030 struct fb_info *info = pci_get_drvdata(dev);
1031 struct s3fb_info *par = info->par;
1032
1033 dev_info(&(dev->dev), "suspend\n");
1034
1035 acquire_console_sem();
1036 mutex_lock(&(par->open_lock));
1037
1038 if ((state.event == PM_EVENT_FREEZE) || (par->ref_count == 0)) {
1039 mutex_unlock(&(par->open_lock));
1040 release_console_sem();
1041 return 0;
1042 }
1043
1044 fb_set_suspend(info, 1);
1045
1046 pci_save_state(dev);
1047 pci_disable_device(dev);
1048 pci_set_power_state(dev, pci_choose_state(dev, state));
1049
1050 mutex_unlock(&(par->open_lock));
1051 release_console_sem();
1052
1053 return 0;
1054}
1055
1056
1057/* PCI resume */
1058
1059static int s3_pci_resume(struct pci_dev* dev)
1060{
1061 struct fb_info *info = pci_get_drvdata(dev);
1062 struct s3fb_info *par = info->par;
1063
1064 dev_info(&(dev->dev), "resume\n");
1065
1066 acquire_console_sem();
1067 mutex_lock(&(par->open_lock));
1068
1069 if (par->ref_count == 0) {
1070 mutex_unlock(&(par->open_lock));
1071 release_console_sem();
1072 return 0;
1073 }
1074
1075 pci_set_power_state(dev, PCI_D0);
1076 pci_restore_state(dev);
1077 pci_enable_device(dev);
1078 pci_set_master(dev);
1079
1080 s3fb_set_par(info);
1081 fb_set_suspend(info, 0);
1082
1083 mutex_unlock(&(par->open_lock));
1084 release_console_sem();
1085
1086 return 0;
1087}
1088
1089
1090/* List of boards that we are trying to support */
1091
1092static struct pci_device_id s3_devices[] __devinitdata = {
1093 {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8810), .driver_data = CHIP_XXX_TRIO},
1094 {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8811), .driver_data = CHIP_XXX_TRIO},
1095 {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8812), .driver_data = CHIP_M65_AURORA64VP},
1096 {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8814), .driver_data = CHIP_767_TRIO64UVP},
1097 {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8901), .driver_data = CHIP_XXX_TRIO64V2_DXGX},
1098 {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8902), .driver_data = CHIP_551_PLATO_PX},
1099
1100 {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x5631), .driver_data = CHIP_325_VIRGE},
1101 {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x883D), .driver_data = CHIP_988_VIRGE_VX},
1102 {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8A01), .driver_data = CHIP_XXX_VIRGE_DXGX},
1103 {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8A10), .driver_data = CHIP_356_VIRGE_GX2},
1104 {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8A11), .driver_data = CHIP_357_VIRGE_GX2P},
1105 {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8A12), .driver_data = CHIP_359_VIRGE_GX2P},
1106
1107 {0, 0, 0, 0, 0, 0, 0}
1108};
1109
1110
1111MODULE_DEVICE_TABLE(pci, s3_devices);
1112
1113static struct pci_driver s3fb_pci_driver = {
1114 .name = "s3fb",
1115 .id_table = s3_devices,
1116 .probe = s3_pci_probe,
1117 .remove = __devexit_p(s3_pci_remove),
1118 .suspend = s3_pci_suspend,
1119 .resume = s3_pci_resume,
1120};
1121
1122/* Parse user speficied options */
1123
1124#ifndef MODULE
1125static int __init s3fb_setup(char *options)
1126{
1127 char *opt;
1128
1129 if (!options || !*options)
1130 return 0;
1131
1132 while ((opt = strsep(&options, ",")) != NULL) {
1133
1134 if (!*opt)
1135 continue;
1136#ifdef CONFIG_MTRR
1137 else if (!strcmp(opt, "mtrr:"))
1138 mtrr = simple_strtoul(opt + 5, NULL, 0);
1139#endif
1140 else if (!strcmp(opt, "fasttext:"))
1141 mtrr = simple_strtoul(opt + 9, NULL, 0);
1142 else
1143 mode = opt;
1144 }
1145
1146 return 0;
1147}
1148#endif
1149
1150/* Cleanup */
1151
1152static void __exit s3fb_cleanup(void)
1153{
1154 pr_debug("s3fb: cleaning up\n");
1155 pci_unregister_driver(&s3fb_pci_driver);
1156}
1157
1158/* Driver Initialisation */
1159
1160static int __init s3fb_init(void)
1161{
1162
1163#ifndef MODULE
1164 char *option = NULL;
1165
1166 if (fb_get_options("s3fb", &option))
1167 return -ENODEV;
1168 s3fb_setup(option);
1169#endif
1170
1171 pr_debug("s3fb: initializing\n");
1172 return pci_register_driver(&s3fb_pci_driver);
1173}
1174
1175/* ------------------------------------------------------------------------- */
1176
1177/* Modularization */
1178
1179module_init(s3fb_init);
1180module_exit(s3fb_cleanup);
diff --git a/drivers/video/svgalib.c b/drivers/video/svgalib.c
new file mode 100644
index 000000000000..68b30d9eac58
--- /dev/null
+++ b/drivers/video/svgalib.c
@@ -0,0 +1,632 @@
1/*
2 * Common utility functions for VGA-based graphics cards.
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 * Some parts are based on David Boucher's viafb (http://davesdomain.org.uk/viafb/)
11 */
12
13#include <linux/module.h>
14#include <linux/kernel.h>
15#include <linux/string.h>
16#include <linux/fb.h>
17#include <linux/svga.h>
18#include <linux/slab.h>
19#include <asm/types.h>
20#include <asm/io.h>
21
22
23/* Write a CRT register value spread across multiple registers */
24void svga_wcrt_multi(const struct vga_regset *regset, u32 value) {
25
26 u8 regval, bitval, bitnum;
27
28 while (regset->regnum != VGA_REGSET_END_VAL) {
29 regval = vga_rcrt(NULL, regset->regnum);
30 bitnum = regset->lowbit;
31 while (bitnum <= regset->highbit) {
32 bitval = 1 << bitnum;
33 regval = regval & ~bitval;
34 if (value & 1) regval = regval | bitval;
35 bitnum ++;
36 value = value >> 1;
37 }
38 vga_wcrt(NULL, regset->regnum, regval);
39 regset ++;
40 }
41}
42
43/* Write a sequencer register value spread across multiple registers */
44void svga_wseq_multi(const struct vga_regset *regset, u32 value) {
45
46 u8 regval, bitval, bitnum;
47
48 while (regset->regnum != VGA_REGSET_END_VAL) {
49 regval = vga_rseq(NULL, regset->regnum);
50 bitnum = regset->lowbit;
51 while (bitnum <= regset->highbit) {
52 bitval = 1 << bitnum;
53 regval = regval & ~bitval;
54 if (value & 1) regval = regval | bitval;
55 bitnum ++;
56 value = value >> 1;
57 }
58 vga_wseq(NULL, regset->regnum, regval);
59 regset ++;
60 }
61}
62
63static unsigned int svga_regset_size(const struct vga_regset *regset)
64{
65 u8 count = 0;
66
67 while (regset->regnum != VGA_REGSET_END_VAL) {
68 count += regset->highbit - regset->lowbit + 1;
69 regset ++;
70 }
71 return 1 << count;
72}
73
74
75/* ------------------------------------------------------------------------- */
76
77
78/* Set graphics controller registers to sane values */
79void svga_set_default_gfx_regs(void)
80{
81 /* All standard GFX registers (GR00 - GR08) */
82 vga_wgfx(NULL, VGA_GFX_SR_VALUE, 0x00);
83 vga_wgfx(NULL, VGA_GFX_SR_ENABLE, 0x00);
84 vga_wgfx(NULL, VGA_GFX_COMPARE_VALUE, 0x00);
85 vga_wgfx(NULL, VGA_GFX_DATA_ROTATE, 0x00);
86 vga_wgfx(NULL, VGA_GFX_PLANE_READ, 0x00);
87 vga_wgfx(NULL, VGA_GFX_MODE, 0x00);
88/* vga_wgfx(NULL, VGA_GFX_MODE, 0x20); */
89/* vga_wgfx(NULL, VGA_GFX_MODE, 0x40); */
90 vga_wgfx(NULL, VGA_GFX_MISC, 0x05);
91/* vga_wgfx(NULL, VGA_GFX_MISC, 0x01); */
92 vga_wgfx(NULL, VGA_GFX_COMPARE_MASK, 0x0F);
93 vga_wgfx(NULL, VGA_GFX_BIT_MASK, 0xFF);
94}
95
96/* Set attribute controller registers to sane values */
97void svga_set_default_atc_regs(void)
98{
99 u8 count;
100
101 vga_r(NULL, 0x3DA);
102 vga_w(NULL, VGA_ATT_W, 0x00);
103
104 /* All standard ATC registers (AR00 - AR14) */
105 for (count = 0; count <= 0xF; count ++)
106 svga_wattr(count, count);
107
108 svga_wattr(VGA_ATC_MODE, 0x01);
109/* svga_wattr(VGA_ATC_MODE, 0x41); */
110 svga_wattr(VGA_ATC_OVERSCAN, 0x00);
111 svga_wattr(VGA_ATC_PLANE_ENABLE, 0x0F);
112 svga_wattr(VGA_ATC_PEL, 0x00);
113 svga_wattr(VGA_ATC_COLOR_PAGE, 0x00);
114
115 vga_r(NULL, 0x3DA);
116 vga_w(NULL, VGA_ATT_W, 0x20);
117}
118
119/* Set sequencer registers to sane values */
120void svga_set_default_seq_regs(void)
121{
122 /* Standard sequencer registers (SR01 - SR04), SR00 is not set */
123 vga_wseq(NULL, VGA_SEQ_CLOCK_MODE, VGA_SR01_CHAR_CLK_8DOTS);
124 vga_wseq(NULL, VGA_SEQ_PLANE_WRITE, VGA_SR02_ALL_PLANES);
125 vga_wseq(NULL, VGA_SEQ_CHARACTER_MAP, 0x00);
126/* vga_wseq(NULL, VGA_SEQ_MEMORY_MODE, VGA_SR04_EXT_MEM | VGA_SR04_SEQ_MODE | VGA_SR04_CHN_4M); */
127 vga_wseq(NULL, VGA_SEQ_MEMORY_MODE, VGA_SR04_EXT_MEM | VGA_SR04_SEQ_MODE);
128}
129
130/* Set CRTC registers to sane values */
131void svga_set_default_crt_regs(void)
132{
133 /* Standard CRT registers CR03 CR08 CR09 CR14 CR17 */
134 svga_wcrt_mask(0x03, 0x80, 0x80); /* Enable vertical retrace EVRA */
135 vga_wcrt(NULL, VGA_CRTC_PRESET_ROW, 0);
136 svga_wcrt_mask(VGA_CRTC_MAX_SCAN, 0, 0x1F);
137 vga_wcrt(NULL, VGA_CRTC_UNDERLINE, 0);
138 vga_wcrt(NULL, VGA_CRTC_MODE, 0xE3);
139}
140
141void svga_set_textmode_vga_regs(void)
142{
143 /* svga_wseq_mask(0x1, 0x00, 0x01); */ /* Switch 8/9 pixel per char */
144 vga_wseq(NULL, VGA_SEQ_MEMORY_MODE, VGA_SR04_EXT_MEM);
145 vga_wseq(NULL, VGA_SEQ_PLANE_WRITE, 0x03);
146
147 vga_wcrt(NULL, VGA_CRTC_MAX_SCAN, 0x0f); /* 0x4f */
148 vga_wcrt(NULL, VGA_CRTC_UNDERLINE, 0x1f);
149 svga_wcrt_mask(VGA_CRTC_MODE, 0x23, 0x7f);
150
151 vga_wcrt(NULL, VGA_CRTC_CURSOR_START, 0x0d);
152 vga_wcrt(NULL, VGA_CRTC_CURSOR_END, 0x0e);
153 vga_wcrt(NULL, VGA_CRTC_CURSOR_HI, 0x00);
154 vga_wcrt(NULL, VGA_CRTC_CURSOR_LO, 0x00);
155
156 vga_wgfx(NULL, VGA_GFX_MODE, 0x10); /* Odd/even memory mode */
157 vga_wgfx(NULL, VGA_GFX_MISC, 0x0E); /* Misc graphics register - text mode enable */
158 vga_wgfx(NULL, VGA_GFX_COMPARE_MASK, 0x00);
159
160 vga_r(NULL, 0x3DA);
161 vga_w(NULL, VGA_ATT_W, 0x00);
162
163 svga_wattr(0x10, 0x0C); /* Attribute Mode Control Register - text mode, blinking and line graphics */
164 svga_wattr(0x13, 0x08); /* Horizontal Pixel Panning Register */
165
166 vga_r(NULL, 0x3DA);
167 vga_w(NULL, VGA_ATT_W, 0x20);
168}
169
170#if 0
171void svga_dump_var(struct fb_var_screeninfo *var, int node)
172{
173 pr_debug("fb%d: var.vmode : 0x%X\n", node, var->vmode);
174 pr_debug("fb%d: var.xres : %d\n", node, var->xres);
175 pr_debug("fb%d: var.yres : %d\n", node, var->yres);
176 pr_debug("fb%d: var.bits_per_pixel: %d\n", node, var->bits_per_pixel);
177 pr_debug("fb%d: var.xres_virtual : %d\n", node, var->xres_virtual);
178 pr_debug("fb%d: var.yres_virtual : %d\n", node, var->yres_virtual);
179 pr_debug("fb%d: var.left_margin : %d\n", node, var->left_margin);
180 pr_debug("fb%d: var.right_margin : %d\n", node, var->right_margin);
181 pr_debug("fb%d: var.upper_margin : %d\n", node, var->upper_margin);
182 pr_debug("fb%d: var.lower_margin : %d\n", node, var->lower_margin);
183 pr_debug("fb%d: var.hsync_len : %d\n", node, var->hsync_len);
184 pr_debug("fb%d: var.vsync_len : %d\n", node, var->vsync_len);
185 pr_debug("fb%d: var.sync : 0x%X\n", node, var->sync);
186 pr_debug("fb%d: var.pixclock : %d\n\n", node, var->pixclock);
187}
188#endif /* 0 */
189
190
191/* ------------------------------------------------------------------------- */
192
193
194void svga_settile(struct fb_info *info, struct fb_tilemap *map)
195{
196 const u8 *font = map->data;
197 u8* fb = (u8 *) info->screen_base;
198 int i, c;
199
200 if ((map->width != 8) || (map->height != 16) ||
201 (map->depth != 1) || (map->length != 256)) {
202 printk(KERN_ERR "fb%d: unsupported font parameters: width %d, height %d, depth %d, length %d\n",
203 info->node, map->width, map->height, map->depth, map->length);
204 return;
205 }
206
207 fb += 2;
208 for (c = 0; c < map->length; c++) {
209 for (i = 0; i < map->height; i++) {
210 fb[i * 4] = font[i];
211 }
212 fb += 128;
213 font += map->height;
214 }
215}
216
217/* Copy area in text (tileblit) mode */
218void svga_tilecopy(struct fb_info *info, struct fb_tilearea *area)
219{
220 int dx, dy;
221 /* colstride is halved in this function because u16 are used */
222 int colstride = 1 << (info->fix.type_aux & FB_AUX_TEXT_SVGA_MASK);
223 int rowstride = colstride * (info->var.xres_virtual / 8);
224 u16 *fb = (u16 *) info->screen_base;
225 u16 *src, *dst;
226
227 if ((area->sy > area->dy) ||
228 ((area->sy == area->dy) && (area->sx > area->dx))) {
229 src = fb + area->sx * colstride + area->sy * rowstride;
230 dst = fb + area->dx * colstride + area->dy * rowstride;
231 } else {
232 src = fb + (area->sx + area->width - 1) * colstride
233 + (area->sy + area->height - 1) * rowstride;
234 dst = fb + (area->dx + area->width - 1) * colstride
235 + (area->dy + area->height - 1) * rowstride;
236
237 colstride = -colstride;
238 rowstride = -rowstride;
239 }
240
241 for (dy = 0; dy < area->height; dy++) {
242 u16* src2 = src;
243 u16* dst2 = dst;
244 for (dx = 0; dx < area->width; dx++) {
245 *dst2 = *src2;
246 src2 += colstride;
247 dst2 += colstride;
248 }
249 src += rowstride;
250 dst += rowstride;
251 }
252}
253
254/* Fill area in text (tileblit) mode */
255void svga_tilefill(struct fb_info *info, struct fb_tilerect *rect)
256{
257 int dx, dy;
258 int colstride = 2 << (info->fix.type_aux & FB_AUX_TEXT_SVGA_MASK);
259 int rowstride = colstride * (info->var.xres_virtual / 8);
260 int attr = (0x0F & rect->bg) << 4 | (0x0F & rect->fg);
261 u8 *fb = (u8 *) info->screen_base;
262 fb += rect->sx * colstride + rect->sy * rowstride;
263
264 for (dy = 0; dy < rect->height; dy++) {
265 u8* fb2 = fb;
266 for (dx = 0; dx < rect->width; dx++) {
267 fb2[0] = rect->index;
268 fb2[1] = attr;
269 fb2 += colstride;
270 }
271 fb += rowstride;
272 }
273}
274
275/* Write text in text (tileblit) mode */
276void svga_tileblit(struct fb_info *info, struct fb_tileblit *blit)
277{
278 int dx, dy, i;
279 int colstride = 2 << (info->fix.type_aux & FB_AUX_TEXT_SVGA_MASK);
280 int rowstride = colstride * (info->var.xres_virtual / 8);
281 int attr = (0x0F & blit->bg) << 4 | (0x0F & blit->fg);
282 u8* fb = (u8 *) info->screen_base;
283 fb += blit->sx * colstride + blit->sy * rowstride;
284
285 i=0;
286 for (dy=0; dy < blit->height; dy ++) {
287 u8* fb2 = fb;
288 for (dx = 0; dx < blit->width; dx ++) {
289 fb2[0] = blit->indices[i];
290 fb2[1] = attr;
291 fb2 += colstride;
292 i ++;
293 if (i == blit->length) return;
294 }
295 fb += rowstride;
296 }
297
298}
299
300/* Set cursor in text (tileblit) mode */
301void svga_tilecursor(struct fb_info *info, struct fb_tilecursor *cursor)
302{
303 u8 cs = 0x0d;
304 u8 ce = 0x0e;
305 u16 pos = cursor->sx + (info->var.xoffset / 8)
306 + (cursor->sy + (info->var.yoffset / 16))
307 * (info->var.xres_virtual / 8);
308
309 if (! cursor -> mode)
310 return;
311
312 svga_wcrt_mask(0x0A, 0x20, 0x20); /* disable cursor */
313
314 if (cursor -> shape == FB_TILE_CURSOR_NONE)
315 return;
316
317 switch (cursor -> shape) {
318 case FB_TILE_CURSOR_UNDERLINE:
319 cs = 0x0d;
320 break;
321 case FB_TILE_CURSOR_LOWER_THIRD:
322 cs = 0x09;
323 break;
324 case FB_TILE_CURSOR_LOWER_HALF:
325 cs = 0x07;
326 break;
327 case FB_TILE_CURSOR_TWO_THIRDS:
328 cs = 0x05;
329 break;
330 case FB_TILE_CURSOR_BLOCK:
331 cs = 0x01;
332 break;
333 }
334
335 /* set cursor position */
336 vga_wcrt(NULL, 0x0E, pos >> 8);
337 vga_wcrt(NULL, 0x0F, pos & 0xFF);
338
339 vga_wcrt(NULL, 0x0B, ce); /* set cursor end */
340 vga_wcrt(NULL, 0x0A, cs); /* set cursor start and enable it */
341}
342
343
344/* ------------------------------------------------------------------------- */
345
346
347/*
348 * Compute PLL settings (M, N, R)
349 * F_VCO = (F_BASE * M) / N
350 * F_OUT = F_VCO / (2^R)
351 */
352
353static inline u32 abs_diff(u32 a, u32 b)
354{
355 return (a > b) ? (a - b) : (b - a);
356}
357
358int svga_compute_pll(const struct svga_pll *pll, u32 f_wanted, u16 *m, u16 *n, u16 *r, int node)
359{
360 u16 am, an, ar;
361 u32 f_vco, f_current, delta_current, delta_best;
362
363 pr_debug("fb%d: ideal frequency: %d kHz\n", node, (unsigned int) f_wanted);
364
365 ar = pll->r_max;
366 f_vco = f_wanted << ar;
367
368 /* overflow check */
369 if ((f_vco >> ar) != f_wanted)
370 return -EINVAL;
371
372 /* It is usually better to have greater VCO clock
373 because of better frequency stability.
374 So first try r_max, then r smaller. */
375 while ((ar > pll->r_min) && (f_vco > pll->f_vco_max)) {
376 ar--;
377 f_vco = f_vco >> 1;
378 }
379
380 /* VCO bounds check */
381 if ((f_vco < pll->f_vco_min) || (f_vco > pll->f_vco_max))
382 return -EINVAL;
383
384 delta_best = 0xFFFFFFFF;
385 *m = 0;
386 *n = 0;
387 *r = ar;
388
389 am = pll->m_min;
390 an = pll->n_min;
391
392 while ((am <= pll->m_max) && (an <= pll->n_max)) {
393 f_current = (pll->f_base * am) / an;
394 delta_current = abs_diff (f_current, f_vco);
395
396 if (delta_current < delta_best) {
397 delta_best = delta_current;
398 *m = am;
399 *n = an;
400 }
401
402 if (f_current <= f_vco) {
403 am ++;
404 } else {
405 an ++;
406 }
407 }
408
409 f_current = (pll->f_base * *m) / *n;
410 pr_debug("fb%d: found frequency: %d kHz (VCO %d kHz)\n", node, (int) (f_current >> ar), (int) f_current);
411 pr_debug("fb%d: m = %d n = %d r = %d\n", node, (unsigned int) *m, (unsigned int) *n, (unsigned int) *r);
412 return 0;
413}
414
415
416/* ------------------------------------------------------------------------- */
417
418
419/* Check CRT timing values */
420int svga_check_timings(const struct svga_timing_regs *tm, struct fb_var_screeninfo *var, int node)
421{
422 u32 value;
423
424 var->xres = (var->xres+7)&~7;
425 var->left_margin = (var->left_margin+7)&~7;
426 var->right_margin = (var->right_margin+7)&~7;
427 var->hsync_len = (var->hsync_len+7)&~7;
428
429 /* Check horizontal total */
430 value = var->xres + var->left_margin + var->right_margin + var->hsync_len;
431 if (((value / 8) - 5) >= svga_regset_size (tm->h_total_regs))
432 return -EINVAL;
433
434 /* Check horizontal display and blank start */
435 value = var->xres;
436 if (((value / 8) - 1) >= svga_regset_size (tm->h_display_regs))
437 return -EINVAL;
438 if (((value / 8) - 1) >= svga_regset_size (tm->h_blank_start_regs))
439 return -EINVAL;
440
441 /* Check horizontal sync start */
442 value = var->xres + var->right_margin;
443 if (((value / 8) - 1) >= svga_regset_size (tm->h_sync_start_regs))
444 return -EINVAL;
445
446 /* Check horizontal blank end (or length) */
447 value = var->left_margin + var->right_margin + var->hsync_len;
448 if ((value == 0) || ((value / 8) >= svga_regset_size (tm->h_blank_end_regs)))
449 return -EINVAL;
450
451 /* Check horizontal sync end (or length) */
452 value = var->hsync_len;
453 if ((value == 0) || ((value / 8) >= svga_regset_size (tm->h_sync_end_regs)))
454 return -EINVAL;
455
456 /* Check vertical total */
457 value = var->yres + var->upper_margin + var->lower_margin + var->vsync_len;
458 if ((value - 1) >= svga_regset_size(tm->v_total_regs))
459 return -EINVAL;
460
461 /* Check vertical display and blank start */
462 value = var->yres;
463 if ((value - 1) >= svga_regset_size(tm->v_display_regs))
464 return -EINVAL;
465 if ((value - 1) >= svga_regset_size(tm->v_blank_start_regs))
466 return -EINVAL;
467
468 /* Check vertical sync start */
469 value = var->yres + var->lower_margin;
470 if ((value - 1) >= svga_regset_size(tm->v_sync_start_regs))
471 return -EINVAL;
472
473 /* Check vertical blank end (or length) */
474 value = var->upper_margin + var->lower_margin + var->vsync_len;
475 if ((value == 0) || (value >= svga_regset_size (tm->v_blank_end_regs)))
476 return -EINVAL;
477
478 /* Check vertical sync end (or length) */
479 value = var->vsync_len;
480 if ((value == 0) || (value >= svga_regset_size (tm->v_sync_end_regs)))
481 return -EINVAL;
482
483 return 0;
484}
485
486/* Set CRT timing registers */
487void svga_set_timings(const struct svga_timing_regs *tm, struct fb_var_screeninfo *var,
488 u32 hmul, u32 hdiv, u32 vmul, u32 vdiv, u32 hborder, int node)
489{
490 u8 regval;
491 u32 value;
492
493 value = var->xres + var->left_margin + var->right_margin + var->hsync_len;
494 value = (value * hmul) / hdiv;
495 pr_debug("fb%d: horizontal total : %d\n", node, value);
496 svga_wcrt_multi(tm->h_total_regs, (value / 8) - 5);
497
498 value = var->xres;
499 value = (value * hmul) / hdiv;
500 pr_debug("fb%d: horizontal display : %d\n", node, value);
501 svga_wcrt_multi(tm->h_display_regs, (value / 8) - 1);
502
503 value = var->xres;
504 value = (value * hmul) / hdiv;
505 pr_debug("fb%d: horizontal blank start: %d\n", node, value);
506 svga_wcrt_multi(tm->h_blank_start_regs, (value / 8) - 1 + hborder);
507
508 value = var->xres + var->left_margin + var->right_margin + var->hsync_len;
509 value = (value * hmul) / hdiv;
510 pr_debug("fb%d: horizontal blank end : %d\n", node, value);
511 svga_wcrt_multi(tm->h_blank_end_regs, (value / 8) - 1 - hborder);
512
513 value = var->xres + var->right_margin;
514 value = (value * hmul) / hdiv;
515 pr_debug("fb%d: horizontal sync start : %d\n", node, value);
516 svga_wcrt_multi(tm->h_sync_start_regs, (value / 8));
517
518 value = var->xres + var->right_margin + var->hsync_len;
519 value = (value * hmul) / hdiv;
520 pr_debug("fb%d: horizontal sync end : %d\n", node, value);
521 svga_wcrt_multi(tm->h_sync_end_regs, (value / 8));
522
523 value = var->yres + var->upper_margin + var->lower_margin + var->vsync_len;
524 value = (value * vmul) / vdiv;
525 pr_debug("fb%d: vertical total : %d\n", node, value);
526 svga_wcrt_multi(tm->v_total_regs, value - 2);
527
528 value = var->yres;
529 value = (value * vmul) / vdiv;
530 pr_debug("fb%d: vertical display : %d\n", node, value);
531 svga_wcrt_multi(tm->v_display_regs, value - 1);
532
533 value = var->yres;
534 value = (value * vmul) / vdiv;
535 pr_debug("fb%d: vertical blank start : %d\n", node, value);
536 svga_wcrt_multi(tm->v_blank_start_regs, value);
537
538 value = var->yres + var->upper_margin + var->lower_margin + var->vsync_len;
539 value = (value * vmul) / vdiv;
540 pr_debug("fb%d: vertical blank end : %d\n", node, value);
541 svga_wcrt_multi(tm->v_blank_end_regs, value - 2);
542
543 value = var->yres + var->lower_margin;
544 value = (value * vmul) / vdiv;
545 pr_debug("fb%d: vertical sync start : %d\n", node, value);
546 svga_wcrt_multi(tm->v_sync_start_regs, value);
547
548 value = var->yres + var->lower_margin + var->vsync_len;
549 value = (value * vmul) / vdiv;
550 pr_debug("fb%d: vertical sync end : %d\n", node, value);
551 svga_wcrt_multi(tm->v_sync_end_regs, value);
552
553 /* Set horizontal and vertical sync pulse polarity in misc register */
554
555 regval = vga_r(NULL, VGA_MIS_R);
556 if (var->sync & FB_SYNC_HOR_HIGH_ACT) {
557 pr_debug("fb%d: positive horizontal sync\n", node);
558 regval = regval & ~0x80;
559 } else {
560 pr_debug("fb%d: negative horizontal sync\n", node);
561 regval = regval | 0x80;
562 }
563 if (var->sync & FB_SYNC_VERT_HIGH_ACT) {
564 pr_debug("fb%d: positive vertical sync\n", node);
565 regval = regval & ~0x40;
566 } else {
567 pr_debug("fb%d: negative vertical sync\n\n", node);
568 regval = regval | 0x40;
569 }
570 vga_w(NULL, VGA_MIS_W, regval);
571}
572
573
574/* ------------------------------------------------------------------------- */
575
576
577int svga_match_format(const struct svga_fb_format *frm, struct fb_var_screeninfo *var, struct fb_fix_screeninfo *fix)
578{
579 int i = 0;
580
581 while (frm->bits_per_pixel != SVGA_FORMAT_END_VAL)
582 {
583 if ((var->bits_per_pixel == frm->bits_per_pixel) &&
584 (var->red.length <= frm->red.length) &&
585 (var->green.length <= frm->green.length) &&
586 (var->blue.length <= frm->blue.length) &&
587 (var->transp.length <= frm->transp.length) &&
588 (var->nonstd == frm->nonstd)) {
589 var->bits_per_pixel = frm->bits_per_pixel;
590 var->red = frm->red;
591 var->green = frm->green;
592 var->blue = frm->blue;
593 var->transp = frm->transp;
594 var->nonstd = frm->nonstd;
595 if (fix != NULL) {
596 fix->type = frm->type;
597 fix->type_aux = frm->type_aux;
598 fix->visual = frm->visual;
599 fix->xpanstep = frm->xpanstep;
600 }
601 return i;
602 }
603 i++;
604 frm++;
605 }
606 return -EINVAL;
607}
608
609
610EXPORT_SYMBOL(svga_wcrt_multi);
611EXPORT_SYMBOL(svga_wseq_multi);
612
613EXPORT_SYMBOL(svga_set_default_gfx_regs);
614EXPORT_SYMBOL(svga_set_default_atc_regs);
615EXPORT_SYMBOL(svga_set_default_seq_regs);
616EXPORT_SYMBOL(svga_set_default_crt_regs);
617EXPORT_SYMBOL(svga_set_textmode_vga_regs);
618
619EXPORT_SYMBOL(svga_settile);
620EXPORT_SYMBOL(svga_tilecopy);
621EXPORT_SYMBOL(svga_tilefill);
622EXPORT_SYMBOL(svga_tileblit);
623EXPORT_SYMBOL(svga_tilecursor);
624
625EXPORT_SYMBOL(svga_compute_pll);
626EXPORT_SYMBOL(svga_check_timings);
627EXPORT_SYMBOL(svga_set_timings);
628EXPORT_SYMBOL(svga_match_format);
629
630MODULE_AUTHOR("Ondrej Zajicek <santiago@crfreenet.org>");
631MODULE_DESCRIPTION("Common utility functions for VGA-based graphics cards");
632MODULE_LICENSE("GPL");
diff --git a/include/linux/fb.h b/include/linux/fb.h
index 64177ec9a019..9402dec393ac 100644
--- a/include/linux/fb.h
+++ b/include/linux/fb.h
@@ -49,6 +49,13 @@
49#define FB_AUX_TEXT_S3_MMIO 2 /* S3 MMIO fasttext */ 49#define FB_AUX_TEXT_S3_MMIO 2 /* S3 MMIO fasttext */
50#define FB_AUX_TEXT_MGA_STEP16 3 /* MGA Millenium I: text, attr, 14 reserved bytes */ 50#define FB_AUX_TEXT_MGA_STEP16 3 /* MGA Millenium I: text, attr, 14 reserved bytes */
51#define FB_AUX_TEXT_MGA_STEP8 4 /* other MGAs: text, attr, 6 reserved bytes */ 51#define FB_AUX_TEXT_MGA_STEP8 4 /* other MGAs: text, attr, 6 reserved bytes */
52#define FB_AUX_TEXT_SVGA_GROUP 8 /* 8-15: SVGA tileblit compatible modes */
53#define FB_AUX_TEXT_SVGA_MASK 7 /* lower three bits says step */
54#define FB_AUX_TEXT_SVGA_STEP2 8 /* SVGA text mode: text, attr */
55#define FB_AUX_TEXT_SVGA_STEP4 9 /* SVGA text mode: text, attr, 2 reserved bytes */
56#define FB_AUX_TEXT_SVGA_STEP8 10 /* SVGA text mode: text, attr, 6 reserved bytes */
57#define FB_AUX_TEXT_SVGA_STEP16 11 /* SVGA text mode: text, attr, 14 reserved bytes */
58#define FB_AUX_TEXT_SVGA_LAST 15 /* reserved up to 15 */
52 59
53#define FB_AUX_VGA_PLANES_VGA4 0 /* 16 color planes (EGA/VGA) */ 60#define FB_AUX_VGA_PLANES_VGA4 0 /* 16 color planes (EGA/VGA) */
54#define FB_AUX_VGA_PLANES_CFB4 1 /* CFB4 in planes (VGA) */ 61#define FB_AUX_VGA_PLANES_CFB4 1 /* CFB4 in planes (VGA) */
diff --git a/include/linux/svga.h b/include/linux/svga.h
new file mode 100644
index 000000000000..eadb981bb37c
--- /dev/null
+++ b/include/linux/svga.h
@@ -0,0 +1,124 @@
1#ifndef _LINUX_SVGA_H
2#define _LINUX_SVGA_H
3
4#ifdef __KERNEL__
5
6#include <linux/pci.h>
7#include <video/vga.h>
8
9/* Terminator for register set */
10
11#define VGA_REGSET_END_VAL 0xFF
12#define VGA_REGSET_END {VGA_REGSET_END_VAL, 0, 0}
13
14struct vga_regset {
15 u8 regnum;
16 u8 lowbit;
17 u8 highbit;
18};
19
20/* ------------------------------------------------------------------------- */
21
22#define SVGA_FORMAT_END_VAL 0xFFFF
23#define SVGA_FORMAT_END {SVGA_FORMAT_END_VAL, {0, 0, 0}, {0, 0, 0}, {0, 0, 0}, {0, 0, 0}, 0, 0, 0, 0, 0, 0}
24
25struct svga_fb_format {
26 /* var part */
27 u32 bits_per_pixel;
28 struct fb_bitfield red;
29 struct fb_bitfield green;
30 struct fb_bitfield blue;
31 struct fb_bitfield transp;
32 u32 nonstd;
33 /* fix part */
34 u32 type;
35 u32 type_aux;
36 u32 visual;
37 u32 xpanstep;
38 u32 xresstep;
39};
40
41struct svga_timing_regs {
42 const struct vga_regset *h_total_regs;
43 const struct vga_regset *h_display_regs;
44 const struct vga_regset *h_blank_start_regs;
45 const struct vga_regset *h_blank_end_regs;
46 const struct vga_regset *h_sync_start_regs;
47 const struct vga_regset *h_sync_end_regs;
48
49 const struct vga_regset *v_total_regs;
50 const struct vga_regset *v_display_regs;
51 const struct vga_regset *v_blank_start_regs;
52 const struct vga_regset *v_blank_end_regs;
53 const struct vga_regset *v_sync_start_regs;
54 const struct vga_regset *v_sync_end_regs;
55};
56
57struct svga_pll {
58 u16 m_min;
59 u16 m_max;
60 u16 n_min;
61 u16 n_max;
62 u16 r_min;
63 u16 r_max; /* r_max < 32 */
64 u32 f_vco_min;
65 u32 f_vco_max;
66 u32 f_base;
67};
68
69
70/* Write a value to the attribute register */
71
72static inline void svga_wattr(u8 index, u8 data)
73{
74 inb(0x3DA);
75 outb(index, 0x3C0);
76 outb(data, 0x3C0);
77}
78
79/* Write a value to a sequence register with a mask */
80
81static inline void svga_wseq_mask(u8 index, u8 data, u8 mask)
82{
83 vga_wseq(NULL, index, (data & mask) | (vga_rseq(NULL, index) & ~mask));
84}
85
86/* Write a value to a CRT register with a mask */
87
88static inline void svga_wcrt_mask(u8 index, u8 data, u8 mask)
89{
90 vga_wcrt(NULL, index, (data & mask) | (vga_rcrt(NULL, index) & ~mask));
91}
92
93static inline int svga_primary_device(struct pci_dev *dev)
94{
95 u16 flags;
96 pci_read_config_word(dev, PCI_COMMAND, &flags);
97 return (flags & PCI_COMMAND_IO);
98}
99
100
101void svga_wcrt_multi(const struct vga_regset *regset, u32 value);
102void svga_wseq_multi(const struct vga_regset *regset, u32 value);
103
104void svga_set_default_gfx_regs(void);
105void svga_set_default_atc_regs(void);
106void svga_set_default_seq_regs(void);
107void svga_set_default_crt_regs(void);
108void svga_set_textmode_vga_regs(void);
109
110void svga_settile(struct fb_info *info, struct fb_tilemap *map);
111void svga_tilecopy(struct fb_info *info, struct fb_tilearea *area);
112void svga_tilefill(struct fb_info *info, struct fb_tilerect *rect);
113void svga_tileblit(struct fb_info *info, struct fb_tileblit *blit);
114void svga_tilecursor(struct fb_info *info, struct fb_tilecursor *cursor);
115
116int svga_compute_pll(const struct svga_pll *pll, u32 f_wanted, u16 *m, u16 *n, u16 *r, int node);
117int svga_check_timings(const struct svga_timing_regs *tm, struct fb_var_screeninfo *var, int node);
118void svga_set_timings(const struct svga_timing_regs *tm, struct fb_var_screeninfo *var, u32 hmul, u32 hdiv, u32 vmul, u32 vdiv, u32 hborder, int node);
119
120int svga_match_format(const struct svga_fb_format *frm, struct fb_var_screeninfo *var, struct fb_fix_screeninfo *fix);
121
122#endif /* __KERNEL__ */
123#endif /* _LINUX_SVGA_H */
124
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-03 06:22:30 -0500