Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * linux/drivers/video/atafb.c -- Atari builtin chipset frame buffer device | |
3 | * | |
4 | * Copyright (C) 1994 Martin Schaller & Roman Hodek | |
a1005012 | 5 | * |
1da177e4 LT |
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 | |
8 | * for more details. | |
9 | * | |
10 | * History: | |
11 | * - 03 Jan 95: Original version by Martin Schaller: The TT driver and | |
12 | * all the device independent stuff | |
13 | * - 09 Jan 95: Roman: I've added the hardware abstraction (hw_switch) | |
14 | * and wrote the Falcon, ST(E), and External drivers | |
15 | * based on the original TT driver. | |
16 | * - 07 May 95: Martin: Added colormap operations for the external driver | |
17 | * - 21 May 95: Martin: Added support for overscan | |
18 | * Andreas: some bug fixes for this | |
19 | * - Jul 95: Guenther Kelleter <guenther@pool.informatik.rwth-aachen.de>: | |
20 | * Programmable Falcon video modes | |
21 | * (thanks to Christian Cartus for documentation | |
22 | * of VIDEL registers). | |
23 | * - 27 Dec 95: Guenther: Implemented user definable video modes "user[0-7]" | |
24 | * on minor 24...31. "user0" may be set on commandline by | |
25 | * "R<x>;<y>;<depth>". (Makes sense only on Falcon) | |
26 | * Video mode switch on Falcon now done at next VBL interrupt | |
27 | * to avoid the annoying right shift of the screen. | |
28 | * - 23 Sep 97: Juergen: added xres_virtual for cards like ProMST | |
29 | * The external-part is legacy, therefore hardware-specific | |
30 | * functions like panning/hardwarescrolling/blanking isn't | |
31 | * supported. | |
32 | * - 29 Sep 97: Juergen: added Romans suggestion for pan_display | |
33 | * (var->xoffset was changed even if no set_screen_base avail.) | |
34 | * - 05 Oct 97: Juergen: extfb (PACKED_PIXEL) is FB_PSEUDOCOLOR 'cause | |
35 | * we know how to set the colors | |
36 | * ext_*palette: read from ext_colors (former MV300_colors) | |
37 | * write to ext_colors and RAMDAC | |
38 | * | |
39 | * To do: | |
40 | * - For the Falcon it is not possible to set random video modes on | |
41 | * SM124 and SC/TV, only the bootup resolution is supported. | |
42 | * | |
43 | */ | |
44 | ||
45 | #define ATAFB_TT | |
46 | #define ATAFB_STE | |
47 | #define ATAFB_EXT | |
48 | #define ATAFB_FALCON | |
49 | ||
50 | #include <linux/module.h> | |
51 | #include <linux/kernel.h> | |
1da177e4 LT |
52 | #include <linux/errno.h> |
53 | #include <linux/string.h> | |
54 | #include <linux/mm.h> | |
1da177e4 LT |
55 | #include <linux/slab.h> |
56 | #include <linux/delay.h> | |
57 | #include <linux/init.h> | |
58 | #include <linux/interrupt.h> | |
59 | ||
60 | #include <asm/setup.h> | |
84902b7a | 61 | #include <linux/uaccess.h> |
1da177e4 LT |
62 | #include <asm/pgtable.h> |
63 | #include <asm/irq.h> | |
64 | #include <asm/io.h> | |
65 | ||
66 | #include <asm/atarihw.h> | |
67 | #include <asm/atariints.h> | |
68 | #include <asm/atari_stram.h> | |
69 | ||
70 | #include <linux/fb.h> | |
71 | #include <asm/atarikb.h> | |
72 | ||
a1005012 MS |
73 | #include "c2p.h" |
74 | #include "atafb.h" | |
1da177e4 LT |
75 | |
76 | #define SWITCH_ACIA 0x01 /* modes for switch on OverScan */ | |
77 | #define SWITCH_SND6 0x40 | |
78 | #define SWITCH_SND7 0x80 | |
79 | #define SWITCH_NONE 0x00 | |
80 | ||
81 | ||
82 | #define up(x, r) (((x) + (r) - 1) & ~((r)-1)) | |
83 | ||
a1005012 MS |
84 | /* |
85 | * Interface to the world | |
86 | */ | |
87 | ||
88 | static int atafb_check_var(struct fb_var_screeninfo *var, struct fb_info *info); | |
89 | static int atafb_set_par(struct fb_info *info); | |
90 | static int atafb_setcolreg(unsigned int regno, unsigned int red, unsigned int green, | |
91 | unsigned int blue, unsigned int transp, | |
92 | struct fb_info *info); | |
93 | static int atafb_blank(int blank, struct fb_info *info); | |
94 | static int atafb_pan_display(struct fb_var_screeninfo *var, | |
95 | struct fb_info *info); | |
96 | static void atafb_fillrect(struct fb_info *info, | |
97 | const struct fb_fillrect *rect); | |
98 | static void atafb_copyarea(struct fb_info *info, | |
99 | const struct fb_copyarea *region); | |
100 | static void atafb_imageblit(struct fb_info *info, const struct fb_image *image); | |
101 | static int atafb_ioctl(struct fb_info *info, unsigned int cmd, | |
102 | unsigned long arg); | |
1da177e4 | 103 | |
1da177e4 | 104 | |
a1005012 | 105 | static int default_par; /* default resolution (0=none) */ |
1da177e4 | 106 | |
a1005012 MS |
107 | static unsigned long default_mem_req; |
108 | ||
109 | static int hwscroll = -1; | |
1da177e4 LT |
110 | |
111 | static int use_hwscroll = 1; | |
112 | ||
a1005012 MS |
113 | static int sttt_xres = 640, st_yres = 400, tt_yres = 480; |
114 | static int sttt_xres_virtual = 640, sttt_yres_virtual = 400; | |
115 | static int ovsc_offset, ovsc_addlen; | |
116 | ||
117 | /* | |
118 | * Hardware parameters for current mode | |
119 | */ | |
1da177e4 LT |
120 | |
121 | static struct atafb_par { | |
122 | void *screen_base; | |
123 | int yres_virtual; | |
a1005012 | 124 | u_long next_line; |
1da177e4 LT |
125 | #if defined ATAFB_TT || defined ATAFB_STE |
126 | union { | |
127 | struct { | |
128 | int mode; | |
129 | int sync; | |
130 | } tt, st; | |
131 | #endif | |
132 | #ifdef ATAFB_FALCON | |
133 | struct falcon_hw { | |
134 | /* Here are fields for storing a video mode, as direct | |
135 | * parameters for the hardware. | |
136 | */ | |
137 | short sync; | |
138 | short line_width; | |
139 | short line_offset; | |
140 | short st_shift; | |
141 | short f_shift; | |
142 | short vid_control; | |
143 | short vid_mode; | |
144 | short xoffset; | |
145 | short hht, hbb, hbe, hdb, hde, hss; | |
146 | short vft, vbb, vbe, vdb, vde, vss; | |
147 | /* auxiliary information */ | |
148 | short mono; | |
149 | short ste_mode; | |
150 | short bpp; | |
74511413 | 151 | u32 pseudo_palette[16]; |
1da177e4 LT |
152 | } falcon; |
153 | #endif | |
154 | /* Nothing needed for external mode */ | |
155 | } hw; | |
156 | } current_par; | |
157 | ||
158 | /* Don't calculate an own resolution, and thus don't change the one found when | |
159 | * booting (currently used for the Falcon to keep settings for internal video | |
160 | * hardware extensions (e.g. ScreenBlaster) */ | |
a1005012 | 161 | static int DontCalcRes = 0; |
1da177e4 LT |
162 | |
163 | #ifdef ATAFB_FALCON | |
164 | #define HHT hw.falcon.hht | |
165 | #define HBB hw.falcon.hbb | |
166 | #define HBE hw.falcon.hbe | |
167 | #define HDB hw.falcon.hdb | |
168 | #define HDE hw.falcon.hde | |
169 | #define HSS hw.falcon.hss | |
170 | #define VFT hw.falcon.vft | |
171 | #define VBB hw.falcon.vbb | |
172 | #define VBE hw.falcon.vbe | |
173 | #define VDB hw.falcon.vdb | |
174 | #define VDE hw.falcon.vde | |
175 | #define VSS hw.falcon.vss | |
176 | #define VCO_CLOCK25 0x04 | |
177 | #define VCO_CSYPOS 0x10 | |
178 | #define VCO_VSYPOS 0x20 | |
179 | #define VCO_HSYPOS 0x40 | |
180 | #define VCO_SHORTOFFS 0x100 | |
181 | #define VMO_DOUBLE 0x01 | |
182 | #define VMO_INTER 0x02 | |
183 | #define VMO_PREMASK 0x0c | |
184 | #endif | |
185 | ||
a1005012 MS |
186 | static struct fb_info fb_info = { |
187 | .fix = { | |
188 | .id = "Atari ", | |
189 | .visual = FB_VISUAL_PSEUDOCOLOR, | |
190 | .accel = FB_ACCEL_NONE, | |
191 | } | |
192 | }; | |
1da177e4 LT |
193 | |
194 | static void *screen_base; /* base address of screen */ | |
195 | static void *real_screen_base; /* (only for Overscan) */ | |
196 | ||
197 | static int screen_len; | |
198 | ||
a1005012 | 199 | static int current_par_valid; |
1da177e4 | 200 | |
a1005012 | 201 | static int mono_moni; |
1da177e4 LT |
202 | |
203 | ||
204 | #ifdef ATAFB_EXT | |
1da177e4 | 205 | |
a1005012 MS |
206 | /* external video handling */ |
207 | static unsigned int external_xres; | |
208 | static unsigned int external_xres_virtual; | |
209 | static unsigned int external_yres; | |
1da177e4 | 210 | |
a1005012 MS |
211 | /* |
212 | * not needed - atafb will never support panning/hardwarescroll with external | |
213 | * static unsigned int external_yres_virtual; | |
214 | */ | |
215 | static unsigned int external_depth; | |
216 | static int external_pmode; | |
217 | static void *external_addr; | |
218 | static unsigned long external_len; | |
219 | static unsigned long external_vgaiobase; | |
220 | static unsigned int external_bitspercol = 6; | |
1da177e4 | 221 | |
a1005012 MS |
222 | /* |
223 | * JOE <joe@amber.dinoco.de>: | |
224 | * added card type for external driver, is only needed for | |
225 | * colormap handling. | |
226 | */ | |
1da177e4 LT |
227 | enum cardtype { IS_VGA, IS_MV300 }; |
228 | static enum cardtype external_card_type = IS_VGA; | |
229 | ||
230 | /* | |
a1005012 MS |
231 | * The MV300 mixes the color registers. So we need an array of munged |
232 | * indices in order to access the correct reg. | |
233 | */ | |
234 | static int MV300_reg_1bit[2] = { | |
235 | 0, 1 | |
236 | }; | |
237 | static int MV300_reg_4bit[16] = { | |
238 | 0, 8, 4, 12, 2, 10, 6, 14, 1, 9, 5, 13, 3, 11, 7, 15 | |
239 | }; | |
240 | static int MV300_reg_8bit[256] = { | |
241 | 0, 128, 64, 192, 32, 160, 96, 224, 16, 144, 80, 208, 48, 176, 112, 240, | |
242 | 8, 136, 72, 200, 40, 168, 104, 232, 24, 152, 88, 216, 56, 184, 120, 248, | |
243 | 4, 132, 68, 196, 36, 164, 100, 228, 20, 148, 84, 212, 52, 180, 116, 244, | |
244 | 12, 140, 76, 204, 44, 172, 108, 236, 28, 156, 92, 220, 60, 188, 124, 252, | |
245 | 2, 130, 66, 194, 34, 162, 98, 226, 18, 146, 82, 210, 50, 178, 114, 242, | |
246 | 10, 138, 74, 202, 42, 170, 106, 234, 26, 154, 90, 218, 58, 186, 122, 250, | |
247 | 6, 134, 70, 198, 38, 166, 102, 230, 22, 150, 86, 214, 54, 182, 118, 246, | |
248 | 14, 142, 78, 206, 46, 174, 110, 238, 30, 158, 94, 222, 62, 190, 126, 254, | |
249 | 1, 129, 65, 193, 33, 161, 97, 225, 17, 145, 81, 209, 49, 177, 113, 241, | |
250 | 9, 137, 73, 201, 41, 169, 105, 233, 25, 153, 89, 217, 57, 185, 121, 249, | |
251 | 5, 133, 69, 197, 37, 165, 101, 229, 21, 149, 85, 213, 53, 181, 117, 245, | |
252 | 13, 141, 77, 205, 45, 173, 109, 237, 29, 157, 93, 221, 61, 189, 125, 253, | |
253 | 3, 131, 67, 195, 35, 163, 99, 227, 19, 147, 83, 211, 51, 179, 115, 243, | |
254 | 11, 139, 75, 203, 43, 171, 107, 235, 27, 155, 91, 219, 59, 187, 123, 251, | |
255 | 7, 135, 71, 199, 39, 167, 103, 231, 23, 151, 87, 215, 55, 183, 119, 247, | |
256 | 15, 143, 79, 207, 47, 175, 111, 239, 31, 159, 95, 223, 63, 191, 127, 255 | |
257 | }; | |
1da177e4 LT |
258 | |
259 | static int *MV300_reg = MV300_reg_8bit; | |
1da177e4 LT |
260 | #endif /* ATAFB_EXT */ |
261 | ||
262 | ||
a1005012 | 263 | static int inverse; |
1da177e4 LT |
264 | |
265 | extern int fontheight_8x8; | |
266 | extern int fontwidth_8x8; | |
267 | extern unsigned char fontdata_8x8[]; | |
268 | ||
269 | extern int fontheight_8x16; | |
270 | extern int fontwidth_8x16; | |
271 | extern unsigned char fontdata_8x16[]; | |
272 | ||
a1005012 MS |
273 | /* |
274 | * struct fb_ops { | |
275 | * * open/release and usage marking | |
276 | * struct module *owner; | |
277 | * int (*fb_open)(struct fb_info *info, int user); | |
278 | * int (*fb_release)(struct fb_info *info, int user); | |
279 | * | |
280 | * * For framebuffers with strange non linear layouts or that do not | |
281 | * * work with normal memory mapped access | |
282 | * ssize_t (*fb_read)(struct file *file, char __user *buf, size_t count, loff_t *ppos); | |
283 | * ssize_t (*fb_write)(struct file *file, const char __user *buf, size_t count, loff_t *ppos); | |
284 | * | |
285 | * * checks var and eventually tweaks it to something supported, | |
286 | * * DOES NOT MODIFY PAR * | |
287 | * int (*fb_check_var)(struct fb_var_screeninfo *var, struct fb_info *info); | |
288 | * | |
289 | * * set the video mode according to info->var * | |
290 | * int (*fb_set_par)(struct fb_info *info); | |
291 | * | |
292 | * * set color register * | |
293 | * int (*fb_setcolreg)(unsigned int regno, unsigned int red, unsigned int green, | |
294 | * unsigned int blue, unsigned int transp, struct fb_info *info); | |
295 | * | |
296 | * * set color registers in batch * | |
297 | * int (*fb_setcmap)(struct fb_cmap *cmap, struct fb_info *info); | |
298 | * | |
299 | * * blank display * | |
300 | * int (*fb_blank)(int blank, struct fb_info *info); | |
301 | * | |
302 | * * pan display * | |
303 | * int (*fb_pan_display)(struct fb_var_screeninfo *var, struct fb_info *info); | |
304 | * | |
305 | * *** The meat of the drawing engine *** | |
306 | * * Draws a rectangle * | |
307 | * void (*fb_fillrect) (struct fb_info *info, const struct fb_fillrect *rect); | |
308 | * * Copy data from area to another * | |
309 | * void (*fb_copyarea) (struct fb_info *info, const struct fb_copyarea *region); | |
310 | * * Draws a image to the display * | |
311 | * void (*fb_imageblit) (struct fb_info *info, const struct fb_image *image); | |
312 | * | |
313 | * * Draws cursor * | |
314 | * int (*fb_cursor) (struct fb_info *info, struct fb_cursor *cursor); | |
315 | * | |
316 | * * Rotates the display * | |
317 | * void (*fb_rotate)(struct fb_info *info, int angle); | |
318 | * | |
319 | * * wait for blit idle, optional * | |
320 | * int (*fb_sync)(struct fb_info *info); | |
321 | * | |
322 | * * perform fb specific ioctl (optional) * | |
323 | * int (*fb_ioctl)(struct fb_info *info, unsigned int cmd, | |
324 | * unsigned long arg); | |
325 | * | |
326 | * * Handle 32bit compat ioctl (optional) * | |
327 | * int (*fb_compat_ioctl)(struct fb_info *info, unsigned int cmd, | |
328 | * unsigned long arg); | |
329 | * | |
330 | * * perform fb specific mmap * | |
331 | * int (*fb_mmap)(struct fb_info *info, struct vm_area_struct *vma); | |
332 | * | |
333 | * * save current hardware state * | |
334 | * void (*fb_save_state)(struct fb_info *info); | |
335 | * | |
336 | * * restore saved state * | |
337 | * void (*fb_restore_state)(struct fb_info *info); | |
338 | * } ; | |
339 | */ | |
340 | ||
341 | ||
1da177e4 LT |
342 | /* ++roman: This structure abstracts from the underlying hardware (ST(e), |
343 | * TT, or Falcon. | |
344 | * | |
a1005012 | 345 | * int (*detect)(void) |
1da177e4 LT |
346 | * This function should detect the current video mode settings and |
347 | * store them in atafb_predefined[0] for later reference by the | |
348 | * user. Return the index+1 of an equivalent predefined mode or 0 | |
349 | * if there is no such. | |
a1005012 MS |
350 | * |
351 | * int (*encode_fix)(struct fb_fix_screeninfo *fix, | |
352 | * struct atafb_par *par) | |
1da177e4 LT |
353 | * This function should fill in the 'fix' structure based on the |
354 | * values in the 'par' structure. | |
a1005012 MS |
355 | * !!! Obsolete, perhaps !!! |
356 | * | |
357 | * int (*decode_var)(struct fb_var_screeninfo *var, | |
358 | * struct atafb_par *par) | |
1da177e4 LT |
359 | * Get the video params out of 'var'. If a value doesn't fit, round |
360 | * it up, if it's too big, return EINVAL. | |
a1005012 MS |
361 | * Round up in the following order: bits_per_pixel, xres, yres, |
362 | * xres_virtual, yres_virtual, xoffset, yoffset, grayscale, bitfields, | |
1da177e4 LT |
363 | * horizontal timing, vertical timing. |
364 | * | |
a1005012 MS |
365 | * int (*encode_var)(struct fb_var_screeninfo *var, |
366 | * struct atafb_par *par); | |
1da177e4 LT |
367 | * Fill the 'var' structure based on the values in 'par' and maybe |
368 | * other values read out of the hardware. | |
a1005012 MS |
369 | * |
370 | * void (*get_par)(struct atafb_par *par) | |
1da177e4 | 371 | * Fill the hardware's 'par' structure. |
a1005012 MS |
372 | * !!! Used only by detect() !!! |
373 | * | |
374 | * void (*set_par)(struct atafb_par *par) | |
1da177e4 | 375 | * Set the hardware according to 'par'. |
1da177e4 LT |
376 | * |
377 | * void (*set_screen_base)(void *s_base) | |
378 | * Set the base address of the displayed frame buffer. Only called | |
379 | * if yres_virtual > yres or xres_virtual > xres. | |
380 | * | |
a1005012 MS |
381 | * int (*blank)(int blank_mode) |
382 | * Blank the screen if blank_mode != 0, else unblank. If blank == NULL then | |
1da177e4 LT |
383 | * the caller blanks by setting the CLUT to all black. Return 0 if blanking |
384 | * succeeded, !=0 if un-/blanking failed due to e.g. a video mode which | |
385 | * doesn't support it. Implements VESA suspend and powerdown modes on | |
386 | * hardware that supports disabling hsync/vsync: | |
a1005012 | 387 | * blank_mode == 2: suspend vsync, 3:suspend hsync, 4: powerdown. |
1da177e4 LT |
388 | */ |
389 | ||
390 | static struct fb_hwswitch { | |
a1005012 MS |
391 | int (*detect)(void); |
392 | int (*encode_fix)(struct fb_fix_screeninfo *fix, | |
393 | struct atafb_par *par); | |
394 | int (*decode_var)(struct fb_var_screeninfo *var, | |
395 | struct atafb_par *par); | |
396 | int (*encode_var)(struct fb_var_screeninfo *var, | |
397 | struct atafb_par *par); | |
398 | void (*get_par)(struct atafb_par *par); | |
399 | void (*set_par)(struct atafb_par *par); | |
1da177e4 | 400 | void (*set_screen_base)(void *s_base); |
a1005012 MS |
401 | int (*blank)(int blank_mode); |
402 | int (*pan_display)(struct fb_var_screeninfo *var, | |
403 | struct fb_info *info); | |
1da177e4 LT |
404 | } *fbhw; |
405 | ||
a1005012 MS |
406 | static char *autodetect_names[] = { "autodetect", NULL }; |
407 | static char *stlow_names[] = { "stlow", NULL }; | |
408 | static char *stmid_names[] = { "stmid", "default5", NULL }; | |
409 | static char *sthigh_names[] = { "sthigh", "default4", NULL }; | |
410 | static char *ttlow_names[] = { "ttlow", NULL }; | |
411 | static char *ttmid_names[] = { "ttmid", "default1", NULL }; | |
412 | static char *tthigh_names[] = { "tthigh", "default2", NULL }; | |
413 | static char *vga2_names[] = { "vga2", NULL }; | |
414 | static char *vga4_names[] = { "vga4", NULL }; | |
415 | static char *vga16_names[] = { "vga16", "default3", NULL }; | |
416 | static char *vga256_names[] = { "vga256", NULL }; | |
417 | static char *falh2_names[] = { "falh2", NULL }; | |
418 | static char *falh16_names[] = { "falh16", NULL }; | |
1da177e4 LT |
419 | |
420 | static char **fb_var_names[] = { | |
1da177e4 LT |
421 | autodetect_names, |
422 | stlow_names, | |
423 | stmid_names, | |
424 | sthigh_names, | |
425 | ttlow_names, | |
426 | ttmid_names, | |
427 | tthigh_names, | |
428 | vga2_names, | |
429 | vga4_names, | |
430 | vga16_names, | |
431 | vga256_names, | |
432 | falh2_names, | |
433 | falh16_names, | |
434 | NULL | |
1da177e4 LT |
435 | }; |
436 | ||
437 | static struct fb_var_screeninfo atafb_predefined[] = { | |
a1005012 MS |
438 | /* |
439 | * yres_virtual == 0 means use hw-scrolling if possible, else yres | |
440 | */ | |
441 | { /* autodetect */ | |
442 | 0, 0, 0, 0, 0, 0, 0, 0, /* xres-grayscale */ | |
443 | {0, 0, 0}, {0, 0, 0}, {0, 0, 0}, {0, 0, 0}, /* red green blue tran*/ | |
1da177e4 | 444 | 0, 0, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0 }, |
a1005012 | 445 | { /* st low */ |
1da177e4 LT |
446 | 320, 200, 320, 0, 0, 0, 4, 0, |
447 | {0, 4, 0}, {0, 4, 0}, {0, 4, 0}, {0, 0, 0}, | |
448 | 0, 0, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0 }, | |
449 | { /* st mid */ | |
450 | 640, 200, 640, 0, 0, 0, 2, 0, | |
451 | {0, 4, 0}, {0, 4, 0}, {0, 4, 0}, {0, 0, 0}, | |
452 | 0, 0, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0 }, | |
453 | { /* st high */ | |
454 | 640, 400, 640, 0, 0, 0, 1, 0, | |
455 | {0, 4, 0}, {0, 4, 0}, {0, 4, 0}, {0, 0, 0}, | |
456 | 0, 0, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0 }, | |
457 | { /* tt low */ | |
458 | 320, 480, 320, 0, 0, 0, 8, 0, | |
459 | {0, 4, 0}, {0, 4, 0}, {0, 4, 0}, {0, 0, 0}, | |
460 | 0, 0, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0 }, | |
461 | { /* tt mid */ | |
462 | 640, 480, 640, 0, 0, 0, 4, 0, | |
463 | {0, 4, 0}, {0, 4, 0}, {0, 4, 0}, {0, 0, 0}, | |
464 | 0, 0, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0 }, | |
465 | { /* tt high */ | |
466 | 1280, 960, 1280, 0, 0, 0, 1, 0, | |
467 | {0, 4, 0}, {0, 4, 0}, {0, 4, 0}, {0, 0, 0}, | |
468 | 0, 0, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0 }, | |
469 | { /* vga2 */ | |
470 | 640, 480, 640, 0, 0, 0, 1, 0, | |
471 | {0, 6, 0}, {0, 6, 0}, {0, 6, 0}, {0, 0, 0}, | |
472 | 0, 0, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0 }, | |
473 | { /* vga4 */ | |
474 | 640, 480, 640, 0, 0, 0, 2, 0, | |
475 | {0, 4, 0}, {0, 4, 0}, {0, 4, 0}, {0, 0, 0}, | |
476 | 0, 0, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0 }, | |
477 | { /* vga16 */ | |
478 | 640, 480, 640, 0, 0, 0, 4, 0, | |
479 | {0, 6, 0}, {0, 6, 0}, {0, 6, 0}, {0, 0, 0}, | |
480 | 0, 0, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0 }, | |
481 | { /* vga256 */ | |
482 | 640, 480, 640, 0, 0, 0, 8, 0, | |
483 | {0, 6, 0}, {0, 6, 0}, {0, 6, 0}, {0, 0, 0}, | |
484 | 0, 0, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0 }, | |
485 | { /* falh2 */ | |
486 | 896, 608, 896, 0, 0, 0, 1, 0, | |
487 | {0, 6, 0}, {0, 6, 0}, {0, 6, 0}, {0, 0, 0}, | |
488 | 0, 0, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0 }, | |
489 | { /* falh16 */ | |
490 | 896, 608, 896, 0, 0, 0, 4, 0, | |
491 | {0, 6, 0}, {0, 6, 0}, {0, 6, 0}, {0, 0, 0}, | |
492 | 0, 0, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0 }, | |
493 | }; | |
494 | ||
a1005012 | 495 | static int num_atafb_predefined = ARRAY_SIZE(atafb_predefined); |
1da177e4 | 496 | |
a1005012 MS |
497 | static struct fb_videomode atafb_modedb[] __initdata = { |
498 | /* | |
499 | * Atari Video Modes | |
500 | * | |
501 | * If you change these, make sure to update DEFMODE_* as well! | |
502 | */ | |
1da177e4 | 503 | |
a1005012 MS |
504 | /* |
505 | * ST/TT Video Modes | |
506 | */ | |
507 | ||
508 | { | |
509 | /* 320x200, 15 kHz, 60 Hz (ST low) */ | |
510 | "st-low", 60, 320, 200, 32000, 32, 16, 31, 14, 96, 4, | |
511 | 0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP | |
512 | }, { | |
513 | /* 640x200, 15 kHz, 60 Hz (ST medium) */ | |
514 | "st-mid", 60, 640, 200, 32000, 32, 16, 31, 14, 96, 4, | |
515 | 0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP | |
516 | }, { | |
517 | /* 640x400, 30.25 kHz, 63.5 Hz (ST high) */ | |
518 | "st-high", 63, 640, 400, 32000, 128, 0, 40, 14, 128, 4, | |
519 | 0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP | |
520 | }, { | |
521 | /* 320x480, 15 kHz, 60 Hz (TT low) */ | |
522 | "tt-low", 60, 320, 480, 31041, 120, 100, 8, 16, 140, 30, | |
523 | 0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP | |
524 | }, { | |
525 | /* 640x480, 29 kHz, 57 Hz (TT medium) */ | |
526 | "tt-mid", 60, 640, 480, 31041, 120, 100, 8, 16, 140, 30, | |
527 | 0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP | |
528 | }, { | |
529 | /* 1280x960, 29 kHz, 60 Hz (TT high) */ | |
530 | "tt-high", 57, 640, 960, 31041, 120, 100, 8, 16, 140, 30, | |
531 | 0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP | |
532 | }, | |
533 | ||
534 | /* | |
535 | * VGA Video Modes | |
536 | */ | |
537 | ||
538 | { | |
539 | /* 640x480, 31 kHz, 60 Hz (VGA) */ | |
540 | "vga", 63.5, 640, 480, 32000, 18, 42, 31, 11, 96, 3, | |
541 | 0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP | |
542 | }, { | |
543 | /* 640x400, 31 kHz, 70 Hz (VGA) */ | |
544 | "vga70", 70, 640, 400, 32000, 18, 42, 31, 11, 96, 3, | |
545 | FB_SYNC_VERT_HIGH_ACT | FB_SYNC_COMP_HIGH_ACT, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP | |
546 | }, | |
547 | ||
548 | /* | |
549 | * Falcon HiRes Video Modes | |
550 | */ | |
551 | ||
552 | { | |
553 | /* 896x608, 31 kHz, 60 Hz (Falcon High) */ | |
554 | "falh", 60, 896, 608, 32000, 18, 42, 31, 1, 96,3, | |
555 | 0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP | |
556 | }, | |
557 | }; | |
558 | ||
559 | #define NUM_TOTAL_MODES ARRAY_SIZE(atafb_modedb) | |
560 | ||
561 | static char *mode_option __initdata = NULL; | |
562 | ||
563 | /* default modes */ | |
564 | ||
565 | #define DEFMODE_TT 5 /* "tt-high" for TT */ | |
566 | #define DEFMODE_F30 7 /* "vga70" for Falcon */ | |
567 | #define DEFMODE_STE 2 /* "st-high" for ST/E */ | |
568 | #define DEFMODE_EXT 6 /* "vga" for external */ | |
569 | ||
570 | ||
571 | static int get_video_mode(char *vname) | |
1da177e4 | 572 | { |
a1005012 MS |
573 | char ***name_list; |
574 | char **name; | |
575 | int i; | |
576 | ||
577 | name_list = fb_var_names; | |
578 | for (i = 0; i < num_atafb_predefined; i++) { | |
579 | name = *name_list++; | |
580 | if (!name || !*name) | |
581 | break; | |
582 | while (*name) { | |
583 | if (!strcmp(vname, *name)) | |
584 | return i + 1; | |
585 | name++; | |
586 | } | |
1da177e4 | 587 | } |
a1005012 | 588 | return 0; |
1da177e4 LT |
589 | } |
590 | ||
591 | ||
592 | ||
593 | /* ------------------- TT specific functions ---------------------- */ | |
594 | ||
595 | #ifdef ATAFB_TT | |
596 | ||
a1005012 | 597 | static int tt_encode_fix(struct fb_fix_screeninfo *fix, struct atafb_par *par) |
1da177e4 LT |
598 | { |
599 | int mode; | |
600 | ||
a1005012 | 601 | strcpy(fix->id, "Atari Builtin"); |
1da177e4 LT |
602 | fix->smem_start = (unsigned long)real_screen_base; |
603 | fix->smem_len = screen_len; | |
a1005012 MS |
604 | fix->type = FB_TYPE_INTERLEAVED_PLANES; |
605 | fix->type_aux = 2; | |
606 | fix->visual = FB_VISUAL_PSEUDOCOLOR; | |
1da177e4 LT |
607 | mode = par->hw.tt.mode & TT_SHIFTER_MODEMASK; |
608 | if (mode == TT_SHIFTER_TTHIGH || mode == TT_SHIFTER_STHIGH) { | |
a1005012 MS |
609 | fix->type = FB_TYPE_PACKED_PIXELS; |
610 | fix->type_aux = 0; | |
1da177e4 | 611 | if (mode == TT_SHIFTER_TTHIGH) |
a1005012 | 612 | fix->visual = FB_VISUAL_MONO01; |
1da177e4 | 613 | } |
a1005012 MS |
614 | fix->xpanstep = 0; |
615 | fix->ypanstep = 1; | |
616 | fix->ywrapstep = 0; | |
02603930 | 617 | fix->line_length = par->next_line; |
1da177e4 LT |
618 | fix->accel = FB_ACCEL_ATARIBLITT; |
619 | return 0; | |
620 | } | |
621 | ||
a1005012 | 622 | static int tt_decode_var(struct fb_var_screeninfo *var, struct atafb_par *par) |
1da177e4 | 623 | { |
a1005012 MS |
624 | int xres = var->xres; |
625 | int yres = var->yres; | |
626 | int bpp = var->bits_per_pixel; | |
1da177e4 LT |
627 | int linelen; |
628 | int yres_virtual = var->yres_virtual; | |
629 | ||
630 | if (mono_moni) { | |
a1005012 | 631 | if (bpp > 1 || xres > sttt_xres * 2 || yres > tt_yres * 2) |
1da177e4 | 632 | return -EINVAL; |
a1005012 MS |
633 | par->hw.tt.mode = TT_SHIFTER_TTHIGH; |
634 | xres = sttt_xres * 2; | |
635 | yres = tt_yres * 2; | |
636 | bpp = 1; | |
1da177e4 LT |
637 | } else { |
638 | if (bpp > 8 || xres > sttt_xres || yres > tt_yres) | |
639 | return -EINVAL; | |
640 | if (bpp > 4) { | |
a1005012 | 641 | if (xres > sttt_xres / 2 || yres > tt_yres) |
1da177e4 | 642 | return -EINVAL; |
a1005012 MS |
643 | par->hw.tt.mode = TT_SHIFTER_TTLOW; |
644 | xres = sttt_xres / 2; | |
645 | yres = tt_yres; | |
646 | bpp = 8; | |
647 | } else if (bpp > 2) { | |
1da177e4 LT |
648 | if (xres > sttt_xres || yres > tt_yres) |
649 | return -EINVAL; | |
a1005012 MS |
650 | if (xres > sttt_xres / 2 || yres > st_yres / 2) { |
651 | par->hw.tt.mode = TT_SHIFTER_TTMID; | |
652 | xres = sttt_xres; | |
653 | yres = tt_yres; | |
654 | bpp = 4; | |
655 | } else { | |
656 | par->hw.tt.mode = TT_SHIFTER_STLOW; | |
657 | xres = sttt_xres / 2; | |
658 | yres = st_yres / 2; | |
659 | bpp = 4; | |
1da177e4 | 660 | } |
a1005012 MS |
661 | } else if (bpp > 1) { |
662 | if (xres > sttt_xres || yres > st_yres / 2) | |
1da177e4 | 663 | return -EINVAL; |
a1005012 MS |
664 | par->hw.tt.mode = TT_SHIFTER_STMID; |
665 | xres = sttt_xres; | |
666 | yres = st_yres / 2; | |
667 | bpp = 2; | |
668 | } else if (var->xres > sttt_xres || var->yres > st_yres) { | |
1da177e4 | 669 | return -EINVAL; |
a1005012 MS |
670 | } else { |
671 | par->hw.tt.mode = TT_SHIFTER_STHIGH; | |
672 | xres = sttt_xres; | |
673 | yres = st_yres; | |
674 | bpp = 1; | |
1da177e4 LT |
675 | } |
676 | } | |
677 | if (yres_virtual <= 0) | |
678 | yres_virtual = 0; | |
679 | else if (yres_virtual < yres) | |
680 | yres_virtual = yres; | |
681 | if (var->sync & FB_SYNC_EXT) | |
a1005012 | 682 | par->hw.tt.sync = 0; |
1da177e4 | 683 | else |
a1005012 MS |
684 | par->hw.tt.sync = 1; |
685 | linelen = xres * bpp / 8; | |
1da177e4 LT |
686 | if (yres_virtual * linelen > screen_len && screen_len) |
687 | return -EINVAL; | |
688 | if (yres * linelen > screen_len && screen_len) | |
689 | return -EINVAL; | |
690 | if (var->yoffset + yres > yres_virtual && yres_virtual) | |
691 | return -EINVAL; | |
692 | par->yres_virtual = yres_virtual; | |
693 | par->screen_base = screen_base + var->yoffset * linelen; | |
02603930 | 694 | par->next_line = linelen; |
1da177e4 LT |
695 | return 0; |
696 | } | |
697 | ||
a1005012 | 698 | static int tt_encode_var(struct fb_var_screeninfo *var, struct atafb_par *par) |
1da177e4 LT |
699 | { |
700 | int linelen; | |
701 | memset(var, 0, sizeof(struct fb_var_screeninfo)); | |
a1005012 MS |
702 | var->red.offset = 0; |
703 | var->red.length = 4; | |
704 | var->red.msb_right = 0; | |
705 | var->grayscale = 0; | |
706 | ||
707 | var->pixclock = 31041; | |
708 | var->left_margin = 120; /* these may be incorrect */ | |
709 | var->right_margin = 100; | |
710 | var->upper_margin = 8; | |
711 | var->lower_margin = 16; | |
712 | var->hsync_len = 140; | |
713 | var->vsync_len = 30; | |
714 | ||
715 | var->height = -1; | |
716 | var->width = -1; | |
1da177e4 LT |
717 | |
718 | if (par->hw.tt.sync & 1) | |
a1005012 | 719 | var->sync = 0; |
1da177e4 | 720 | else |
a1005012 | 721 | var->sync = FB_SYNC_EXT; |
1da177e4 LT |
722 | |
723 | switch (par->hw.tt.mode & TT_SHIFTER_MODEMASK) { | |
724 | case TT_SHIFTER_STLOW: | |
a1005012 MS |
725 | var->xres = sttt_xres / 2; |
726 | var->xres_virtual = sttt_xres_virtual / 2; | |
727 | var->yres = st_yres / 2; | |
728 | var->bits_per_pixel = 4; | |
1da177e4 LT |
729 | break; |
730 | case TT_SHIFTER_STMID: | |
a1005012 MS |
731 | var->xres = sttt_xres; |
732 | var->xres_virtual = sttt_xres_virtual; | |
733 | var->yres = st_yres / 2; | |
734 | var->bits_per_pixel = 2; | |
1da177e4 LT |
735 | break; |
736 | case TT_SHIFTER_STHIGH: | |
a1005012 MS |
737 | var->xres = sttt_xres; |
738 | var->xres_virtual = sttt_xres_virtual; | |
739 | var->yres = st_yres; | |
740 | var->bits_per_pixel = 1; | |
1da177e4 LT |
741 | break; |
742 | case TT_SHIFTER_TTLOW: | |
a1005012 MS |
743 | var->xres = sttt_xres / 2; |
744 | var->xres_virtual = sttt_xres_virtual / 2; | |
745 | var->yres = tt_yres; | |
746 | var->bits_per_pixel = 8; | |
1da177e4 LT |
747 | break; |
748 | case TT_SHIFTER_TTMID: | |
a1005012 MS |
749 | var->xres = sttt_xres; |
750 | var->xres_virtual = sttt_xres_virtual; | |
751 | var->yres = tt_yres; | |
752 | var->bits_per_pixel = 4; | |
1da177e4 LT |
753 | break; |
754 | case TT_SHIFTER_TTHIGH: | |
a1005012 MS |
755 | var->red.length = 0; |
756 | var->xres = sttt_xres * 2; | |
757 | var->xres_virtual = sttt_xres_virtual * 2; | |
758 | var->yres = tt_yres * 2; | |
759 | var->bits_per_pixel = 1; | |
1da177e4 | 760 | break; |
a1005012 MS |
761 | } |
762 | var->blue = var->green = var->red; | |
763 | var->transp.offset = 0; | |
764 | var->transp.length = 0; | |
765 | var->transp.msb_right = 0; | |
766 | linelen = var->xres_virtual * var->bits_per_pixel / 8; | |
767 | if (!use_hwscroll) | |
768 | var->yres_virtual = var->yres; | |
1da177e4 LT |
769 | else if (screen_len) { |
770 | if (par->yres_virtual) | |
771 | var->yres_virtual = par->yres_virtual; | |
772 | else | |
a1005012 | 773 | /* yres_virtual == 0 means use maximum */ |
1da177e4 LT |
774 | var->yres_virtual = screen_len / linelen; |
775 | } else { | |
776 | if (hwscroll < 0) | |
777 | var->yres_virtual = 2 * var->yres; | |
778 | else | |
a1005012 | 779 | var->yres_virtual = var->yres + hwscroll * 16; |
1da177e4 | 780 | } |
a1005012 | 781 | var->xoffset = 0; |
1da177e4 | 782 | if (screen_base) |
a1005012 | 783 | var->yoffset = (par->screen_base - screen_base) / linelen; |
1da177e4 | 784 | else |
a1005012 MS |
785 | var->yoffset = 0; |
786 | var->nonstd = 0; | |
787 | var->activate = 0; | |
788 | var->vmode = FB_VMODE_NONINTERLACED; | |
1da177e4 LT |
789 | return 0; |
790 | } | |
791 | ||
a1005012 | 792 | static void tt_get_par(struct atafb_par *par) |
1da177e4 LT |
793 | { |
794 | unsigned long addr; | |
a1005012 MS |
795 | par->hw.tt.mode = shifter_tt.tt_shiftmode; |
796 | par->hw.tt.sync = shifter.syncmode; | |
1da177e4 LT |
797 | addr = ((shifter.bas_hi & 0xff) << 16) | |
798 | ((shifter.bas_md & 0xff) << 8) | | |
799 | ((shifter.bas_lo & 0xff)); | |
800 | par->screen_base = phys_to_virt(addr); | |
801 | } | |
802 | ||
a1005012 | 803 | static void tt_set_par(struct atafb_par *par) |
1da177e4 | 804 | { |
a1005012 MS |
805 | shifter_tt.tt_shiftmode = par->hw.tt.mode; |
806 | shifter.syncmode = par->hw.tt.sync; | |
1da177e4 LT |
807 | /* only set screen_base if really necessary */ |
808 | if (current_par.screen_base != par->screen_base) | |
809 | fbhw->set_screen_base(par->screen_base); | |
810 | } | |
811 | ||
a1005012 MS |
812 | static int tt_setcolreg(unsigned int regno, unsigned int red, |
813 | unsigned int green, unsigned int blue, | |
814 | unsigned int transp, struct fb_info *info) | |
1da177e4 LT |
815 | { |
816 | if ((shifter_tt.tt_shiftmode & TT_SHIFTER_MODEMASK) == TT_SHIFTER_STHIGH) | |
817 | regno += 254; | |
818 | if (regno > 255) | |
819 | return 1; | |
820 | tt_palette[regno] = (((red >> 12) << 8) | ((green >> 12) << 4) | | |
821 | (blue >> 12)); | |
822 | if ((shifter_tt.tt_shiftmode & TT_SHIFTER_MODEMASK) == | |
a1005012 | 823 | TT_SHIFTER_STHIGH && regno == 254) |
1da177e4 LT |
824 | tt_palette[0] = 0; |
825 | return 0; | |
826 | } | |
827 | ||
a1005012 MS |
828 | static int tt_detect(void) |
829 | { | |
830 | struct atafb_par par; | |
1da177e4 LT |
831 | |
832 | /* Determine the connected monitor: The DMA sound must be | |
833 | * disabled before reading the MFP GPIP, because the Sound | |
834 | * Done Signal and the Monochrome Detect are XORed together! | |
835 | * | |
836 | * Even on a TT, we should look if there is a DMA sound. It was | |
837 | * announced that the Eagle is TT compatible, but only the PCM is | |
838 | * missing... | |
839 | */ | |
a1005012 | 840 | if (ATARIHW_PRESENT(PCM_8BIT)) { |
1da177e4 | 841 | tt_dmasnd.ctrl = DMASND_CTRL_OFF; |
a1005012 | 842 | udelay(20); /* wait a while for things to settle down */ |
1da177e4 LT |
843 | } |
844 | mono_moni = (mfp.par_dt_reg & 0x80) == 0; | |
845 | ||
846 | tt_get_par(&par); | |
847 | tt_encode_var(&atafb_predefined[0], &par); | |
848 | ||
849 | return 1; | |
850 | } | |
851 | ||
852 | #endif /* ATAFB_TT */ | |
853 | ||
854 | /* ------------------- Falcon specific functions ---------------------- */ | |
855 | ||
856 | #ifdef ATAFB_FALCON | |
857 | ||
858 | static int mon_type; /* Falcon connected monitor */ | |
859 | static int f030_bus_width; /* Falcon ram bus width (for vid_control) */ | |
860 | #define F_MON_SM 0 | |
861 | #define F_MON_SC 1 | |
862 | #define F_MON_VGA 2 | |
863 | #define F_MON_TV 3 | |
864 | ||
865 | static struct pixel_clock { | |
866 | unsigned long f; /* f/[Hz] */ | |
867 | unsigned long t; /* t/[ps] (=1/f) */ | |
868 | int right, hsync, left; /* standard timing in clock cycles, not pixel */ | |
a1005012 | 869 | /* hsync initialized in falcon_detect() */ |
1da177e4 LT |
870 | int sync_mask; /* or-mask for hw.falcon.sync to set this clock */ |
871 | int control_mask; /* ditto, for hw.falcon.vid_control */ | |
a1005012 MS |
872 | } f25 = { |
873 | 25175000, 39721, 18, 0, 42, 0x0, VCO_CLOCK25 | |
874 | }, f32 = { | |
875 | 32000000, 31250, 18, 0, 42, 0x0, 0 | |
876 | }, fext = { | |
877 | 0, 0, 18, 0, 42, 0x1, 0 | |
878 | }; | |
1da177e4 LT |
879 | |
880 | /* VIDEL-prescale values [mon_type][pixel_length from VCO] */ | |
a1005012 MS |
881 | static int vdl_prescale[4][3] = { |
882 | { 4,2,1 }, { 4,2,1 }, { 4,2,2 }, { 4,2,1 } | |
883 | }; | |
1da177e4 LT |
884 | |
885 | /* Default hsync timing [mon_type] in picoseconds */ | |
a1005012 | 886 | static long h_syncs[4] = { 3000000, 4875000, 4000000, 4875000 }; |
1da177e4 | 887 | |
1da177e4 LT |
888 | static inline int hxx_prescale(struct falcon_hw *hw) |
889 | { | |
a1005012 MS |
890 | return hw->ste_mode ? 16 |
891 | : vdl_prescale[mon_type][hw->vid_mode >> 2 & 0x3]; | |
1da177e4 LT |
892 | } |
893 | ||
a1005012 MS |
894 | static int falcon_encode_fix(struct fb_fix_screeninfo *fix, |
895 | struct atafb_par *par) | |
1da177e4 LT |
896 | { |
897 | strcpy(fix->id, "Atari Builtin"); | |
898 | fix->smem_start = (unsigned long)real_screen_base; | |
899 | fix->smem_len = screen_len; | |
900 | fix->type = FB_TYPE_INTERLEAVED_PLANES; | |
901 | fix->type_aux = 2; | |
902 | fix->visual = FB_VISUAL_PSEUDOCOLOR; | |
903 | fix->xpanstep = 1; | |
904 | fix->ypanstep = 1; | |
905 | fix->ywrapstep = 0; | |
906 | if (par->hw.falcon.mono) { | |
907 | fix->type = FB_TYPE_PACKED_PIXELS; | |
908 | fix->type_aux = 0; | |
909 | /* no smooth scrolling with longword aligned video mem */ | |
910 | fix->xpanstep = 32; | |
a1005012 | 911 | } else if (par->hw.falcon.f_shift & 0x100) { |
1da177e4 LT |
912 | fix->type = FB_TYPE_PACKED_PIXELS; |
913 | fix->type_aux = 0; | |
914 | /* Is this ok or should it be DIRECTCOLOR? */ | |
915 | fix->visual = FB_VISUAL_TRUECOLOR; | |
916 | fix->xpanstep = 2; | |
917 | } | |
02603930 | 918 | fix->line_length = par->next_line; |
1da177e4 LT |
919 | fix->accel = FB_ACCEL_ATARIBLITT; |
920 | return 0; | |
921 | } | |
922 | ||
a1005012 MS |
923 | static int falcon_decode_var(struct fb_var_screeninfo *var, |
924 | struct atafb_par *par) | |
1da177e4 LT |
925 | { |
926 | int bpp = var->bits_per_pixel; | |
927 | int xres = var->xres; | |
928 | int yres = var->yres; | |
929 | int xres_virtual = var->xres_virtual; | |
930 | int yres_virtual = var->yres_virtual; | |
931 | int left_margin, right_margin, hsync_len; | |
932 | int upper_margin, lower_margin, vsync_len; | |
933 | int linelen; | |
934 | int interlace = 0, doubleline = 0; | |
935 | struct pixel_clock *pclock; | |
a1005012 | 936 | int plen; /* width of pixel in clock cycles */ |
1da177e4 LT |
937 | int xstretch; |
938 | int prescale; | |
939 | int longoffset = 0; | |
940 | int hfreq, vfreq; | |
a1005012 MS |
941 | int hdb_off, hde_off, base_off; |
942 | int gstart, gend1, gend2, align; | |
1da177e4 LT |
943 | |
944 | /* | |
945 | Get the video params out of 'var'. If a value doesn't fit, round | |
946 | it up, if it's too big, return EINVAL. | |
a1005012 MS |
947 | Round up in the following order: bits_per_pixel, xres, yres, |
948 | xres_virtual, yres_virtual, xoffset, yoffset, grayscale, bitfields, | |
1da177e4 LT |
949 | horizontal timing, vertical timing. |
950 | ||
951 | There is a maximum of screen resolution determined by pixelclock | |
952 | and minimum frame rate -- (X+hmarg.)*(Y+vmarg.)*vfmin <= pixelclock. | |
953 | In interlace mode this is " * " *vfmin <= pixelclock. | |
954 | Additional constraints: hfreq. | |
955 | Frequency range for multisync monitors is given via command line. | |
956 | For TV and SM124 both frequencies are fixed. | |
957 | ||
a1005012 | 958 | X % 16 == 0 to fit 8x?? font (except 1 bitplane modes must use X%32 == 0) |
1da177e4 LT |
959 | Y % 16 == 0 to fit 8x16 font |
960 | Y % 8 == 0 if Y<400 | |
961 | ||
a1005012 | 962 | Currently interlace and doubleline mode in var are ignored. |
1da177e4 LT |
963 | On SM124 and TV only the standard resolutions can be used. |
964 | */ | |
965 | ||
966 | /* Reject uninitialized mode */ | |
967 | if (!xres || !yres || !bpp) | |
968 | return -EINVAL; | |
969 | ||
a1005012 | 970 | if (mon_type == F_MON_SM && bpp != 1) |
1da177e4 | 971 | return -EINVAL; |
a1005012 MS |
972 | |
973 | if (bpp <= 1) { | |
1da177e4 LT |
974 | bpp = 1; |
975 | par->hw.falcon.f_shift = 0x400; | |
976 | par->hw.falcon.st_shift = 0x200; | |
a1005012 | 977 | } else if (bpp <= 2) { |
1da177e4 LT |
978 | bpp = 2; |
979 | par->hw.falcon.f_shift = 0x000; | |
980 | par->hw.falcon.st_shift = 0x100; | |
a1005012 | 981 | } else if (bpp <= 4) { |
1da177e4 LT |
982 | bpp = 4; |
983 | par->hw.falcon.f_shift = 0x000; | |
984 | par->hw.falcon.st_shift = 0x000; | |
a1005012 | 985 | } else if (bpp <= 8) { |
1da177e4 LT |
986 | bpp = 8; |
987 | par->hw.falcon.f_shift = 0x010; | |
a1005012 MS |
988 | } else if (bpp <= 16) { |
989 | bpp = 16; /* packed pixel mode */ | |
990 | par->hw.falcon.f_shift = 0x100; /* hicolor, no overlay */ | |
991 | } else | |
1da177e4 LT |
992 | return -EINVAL; |
993 | par->hw.falcon.bpp = bpp; | |
994 | ||
995 | if (mon_type == F_MON_SM || DontCalcRes) { | |
996 | /* Skip all calculations. VGA/TV/SC1224 only supported. */ | |
997 | struct fb_var_screeninfo *myvar = &atafb_predefined[0]; | |
a1005012 | 998 | |
1da177e4 | 999 | if (bpp > myvar->bits_per_pixel || |
a1005012 MS |
1000 | var->xres > myvar->xres || |
1001 | var->yres > myvar->yres) | |
1da177e4 LT |
1002 | return -EINVAL; |
1003 | fbhw->get_par(par); /* Current par will be new par */ | |
1004 | goto set_screen_base; /* Don't forget this */ | |
1005 | } | |
1006 | ||
1007 | /* Only some fixed resolutions < 640x400 */ | |
1008 | if (xres <= 320) | |
1009 | xres = 320; | |
1010 | else if (xres <= 640 && bpp != 16) | |
1011 | xres = 640; | |
1012 | if (yres <= 200) | |
1013 | yres = 200; | |
1014 | else if (yres <= 240) | |
1015 | yres = 240; | |
1016 | else if (yres <= 400) | |
1017 | yres = 400; | |
1018 | ||
1019 | /* 2 planes must use STE compatibility mode */ | |
a1005012 MS |
1020 | par->hw.falcon.ste_mode = bpp == 2; |
1021 | par->hw.falcon.mono = bpp == 1; | |
1da177e4 LT |
1022 | |
1023 | /* Total and visible scanline length must be a multiple of one longword, | |
1024 | * this and the console fontwidth yields the alignment for xres and | |
1025 | * xres_virtual. | |
1026 | * TODO: this way "odd" fontheights are not supported | |
1027 | * | |
1028 | * Special case in STE mode: blank and graphic positions don't align, | |
1029 | * avoid trash at right margin | |
1030 | */ | |
1031 | if (par->hw.falcon.ste_mode) | |
1032 | xres = (xres + 63) & ~63; | |
1033 | else if (bpp == 1) | |
1034 | xres = (xres + 31) & ~31; | |
1035 | else | |
1036 | xres = (xres + 15) & ~15; | |
1037 | if (yres >= 400) | |
1038 | yres = (yres + 15) & ~15; | |
1039 | else | |
1040 | yres = (yres + 7) & ~7; | |
1041 | ||
1042 | if (xres_virtual < xres) | |
1043 | xres_virtual = xres; | |
1044 | else if (bpp == 1) | |
1045 | xres_virtual = (xres_virtual + 31) & ~31; | |
1046 | else | |
1047 | xres_virtual = (xres_virtual + 15) & ~15; | |
1048 | ||
1049 | if (yres_virtual <= 0) | |
1050 | yres_virtual = 0; | |
1051 | else if (yres_virtual < yres) | |
1052 | yres_virtual = yres; | |
1053 | ||
1054 | /* backward bug-compatibility */ | |
1055 | if (var->pixclock > 1) | |
1056 | var->pixclock -= 1; | |
1057 | ||
1058 | par->hw.falcon.line_width = bpp * xres / 16; | |
1059 | par->hw.falcon.line_offset = bpp * (xres_virtual - xres) / 16; | |
1060 | ||
1061 | /* single or double pixel width */ | |
1062 | xstretch = (xres < 640) ? 2 : 1; | |
1063 | ||
1064 | #if 0 /* SM124 supports only 640x400, this is rejected above */ | |
1065 | if (mon_type == F_MON_SM) { | |
1066 | if (xres != 640 && yres != 400) | |
1067 | return -EINVAL; | |
1068 | plen = 1; | |
1069 | pclock = &f32; | |
1070 | /* SM124-mode is special */ | |
1071 | par->hw.falcon.ste_mode = 1; | |
1072 | par->hw.falcon.f_shift = 0x000; | |
1073 | par->hw.falcon.st_shift = 0x200; | |
1074 | left_margin = hsync_len = 128 / plen; | |
1075 | right_margin = 0; | |
1076 | /* TODO set all margins */ | |
a1005012 | 1077 | } else |
1da177e4 LT |
1078 | #endif |
1079 | if (mon_type == F_MON_SC || mon_type == F_MON_TV) { | |
1080 | plen = 2 * xstretch; | |
1081 | if (var->pixclock > f32.t * plen) | |
1082 | return -EINVAL; | |
1083 | pclock = &f32; | |
1084 | if (yres > 240) | |
1085 | interlace = 1; | |
1086 | if (var->pixclock == 0) { | |
1087 | /* set some minimal margins which center the screen */ | |
1088 | left_margin = 32; | |
1089 | right_margin = 18; | |
1090 | hsync_len = pclock->hsync / plen; | |
1091 | upper_margin = 31; | |
1092 | lower_margin = 14; | |
1093 | vsync_len = interlace ? 3 : 4; | |
1094 | } else { | |
1095 | left_margin = var->left_margin; | |
1096 | right_margin = var->right_margin; | |
1097 | hsync_len = var->hsync_len; | |
1098 | upper_margin = var->upper_margin; | |
1099 | lower_margin = var->lower_margin; | |
1100 | vsync_len = var->vsync_len; | |
1101 | if (var->vmode & FB_VMODE_INTERLACED) { | |
1102 | upper_margin = (upper_margin + 1) / 2; | |
1103 | lower_margin = (lower_margin + 1) / 2; | |
1104 | vsync_len = (vsync_len + 1) / 2; | |
1105 | } else if (var->vmode & FB_VMODE_DOUBLE) { | |
1106 | upper_margin *= 2; | |
1107 | lower_margin *= 2; | |
1108 | vsync_len *= 2; | |
1109 | } | |
1110 | } | |
a1005012 | 1111 | } else { /* F_MON_VGA */ |
1da177e4 | 1112 | if (bpp == 16) |
a1005012 | 1113 | xstretch = 2; /* Double pixel width only for hicolor */ |
1da177e4 LT |
1114 | /* Default values are used for vert./hor. timing if no pixelclock given. */ |
1115 | if (var->pixclock == 0) { | |
1116 | int linesize; | |
1117 | ||
1118 | /* Choose master pixelclock depending on hor. timing */ | |
1119 | plen = 1 * xstretch; | |
a1005012 | 1120 | if ((plen * xres + f25.right + f25.hsync + f25.left) * |
1da177e4 LT |
1121 | fb_info.monspecs.hfmin < f25.f) |
1122 | pclock = &f25; | |
a1005012 MS |
1123 | else if ((plen * xres + f32.right + f32.hsync + |
1124 | f32.left) * fb_info.monspecs.hfmin < f32.f) | |
1da177e4 | 1125 | pclock = &f32; |
a1005012 MS |
1126 | else if ((plen * xres + fext.right + fext.hsync + |
1127 | fext.left) * fb_info.monspecs.hfmin < fext.f && | |
1128 | fext.f) | |
1da177e4 LT |
1129 | pclock = &fext; |
1130 | else | |
1131 | return -EINVAL; | |
1132 | ||
1133 | left_margin = pclock->left / plen; | |
1134 | right_margin = pclock->right / plen; | |
1135 | hsync_len = pclock->hsync / plen; | |
1136 | linesize = left_margin + xres + right_margin + hsync_len; | |
1137 | upper_margin = 31; | |
1138 | lower_margin = 11; | |
1139 | vsync_len = 3; | |
a1005012 | 1140 | } else { |
1da177e4 LT |
1141 | /* Choose largest pixelclock <= wanted clock */ |
1142 | int i; | |
1143 | unsigned long pcl = ULONG_MAX; | |
1144 | pclock = 0; | |
a1005012 MS |
1145 | for (i = 1; i <= 4; i *= 2) { |
1146 | if (f25.t * i >= var->pixclock && | |
1147 | f25.t * i < pcl) { | |
1da177e4 LT |
1148 | pcl = f25.t * i; |
1149 | pclock = &f25; | |
1150 | } | |
a1005012 MS |
1151 | if (f32.t * i >= var->pixclock && |
1152 | f32.t * i < pcl) { | |
1da177e4 LT |
1153 | pcl = f32.t * i; |
1154 | pclock = &f32; | |
1155 | } | |
a1005012 MS |
1156 | if (fext.t && fext.t * i >= var->pixclock && |
1157 | fext.t * i < pcl) { | |
1da177e4 LT |
1158 | pcl = fext.t * i; |
1159 | pclock = &fext; | |
1160 | } | |
1161 | } | |
1162 | if (!pclock) | |
1163 | return -EINVAL; | |
1164 | plen = pcl / pclock->t; | |
1165 | ||
1166 | left_margin = var->left_margin; | |
1167 | right_margin = var->right_margin; | |
1168 | hsync_len = var->hsync_len; | |
1169 | upper_margin = var->upper_margin; | |
1170 | lower_margin = var->lower_margin; | |
1171 | vsync_len = var->vsync_len; | |
1172 | /* Internal unit is [single lines per (half-)frame] */ | |
1173 | if (var->vmode & FB_VMODE_INTERLACED) { | |
1174 | /* # lines in half frame */ | |
1175 | /* External unit is [lines per full frame] */ | |
1176 | upper_margin = (upper_margin + 1) / 2; | |
1177 | lower_margin = (lower_margin + 1) / 2; | |
1178 | vsync_len = (vsync_len + 1) / 2; | |
a1005012 | 1179 | } else if (var->vmode & FB_VMODE_DOUBLE) { |
1da177e4 LT |
1180 | /* External unit is [double lines per frame] */ |
1181 | upper_margin *= 2; | |
1182 | lower_margin *= 2; | |
1183 | vsync_len *= 2; | |
1184 | } | |
1185 | } | |
1186 | if (pclock == &fext) | |
a1005012 | 1187 | longoffset = 1; /* VIDEL doesn't synchronize on short offset */ |
1da177e4 LT |
1188 | } |
1189 | /* Is video bus bandwidth (32MB/s) too low for this resolution? */ | |
1190 | /* this is definitely wrong if bus clock != 32MHz */ | |
1191 | if (pclock->f / plen / 8 * bpp > 32000000L) | |
1192 | return -EINVAL; | |
1193 | ||
1194 | if (vsync_len < 1) | |
1195 | vsync_len = 1; | |
1196 | ||
1197 | /* include sync lengths in right/lower margin for all calculations */ | |
1198 | right_margin += hsync_len; | |
1199 | lower_margin += vsync_len; | |
1200 | ||
1201 | /* ! In all calculations of margins we use # of lines in half frame | |
1202 | * (which is a full frame in non-interlace mode), so we can switch | |
1203 | * between interlace and non-interlace without messing around | |
1204 | * with these. | |
1205 | */ | |
a1005012 | 1206 | again: |
1da177e4 LT |
1207 | /* Set base_offset 128 and video bus width */ |
1208 | par->hw.falcon.vid_control = mon_type | f030_bus_width; | |
1209 | if (!longoffset) | |
1210 | par->hw.falcon.vid_control |= VCO_SHORTOFFS; /* base_offset 64 */ | |
1211 | if (var->sync & FB_SYNC_HOR_HIGH_ACT) | |
1212 | par->hw.falcon.vid_control |= VCO_HSYPOS; | |
1213 | if (var->sync & FB_SYNC_VERT_HIGH_ACT) | |
1214 | par->hw.falcon.vid_control |= VCO_VSYPOS; | |
1215 | /* Pixelclock */ | |
1216 | par->hw.falcon.vid_control |= pclock->control_mask; | |
1217 | /* External or internal clock */ | |
1218 | par->hw.falcon.sync = pclock->sync_mask | 0x2; | |
1219 | /* Pixellength and prescale */ | |
a1005012 | 1220 | par->hw.falcon.vid_mode = (2 / plen) << 2; |
1da177e4 LT |
1221 | if (doubleline) |
1222 | par->hw.falcon.vid_mode |= VMO_DOUBLE; | |
1223 | if (interlace) | |
1224 | par->hw.falcon.vid_mode |= VMO_INTER; | |
1225 | ||
1226 | /********************* | |
a1005012 MS |
1227 | * Horizontal timing: unit = [master clock cycles] |
1228 | * unit of hxx-registers: [master clock cycles * prescale] | |
1229 | * Hxx-registers are 9 bit wide | |
1230 | * | |
1231 | * 1 line = ((hht + 2) * 2 * prescale) clock cycles | |
1232 | * | |
1233 | * graphic output = hdb & 0x200 ? | |
1234 | * ((hht + 2) * 2 - hdb + hde) * prescale - hdboff + hdeoff: | |
1235 | * (hht + 2 - hdb + hde) * prescale - hdboff + hdeoff | |
1236 | * (this must be a multiple of plen*128/bpp, on VGA pixels | |
1237 | * to the right may be cut off with a bigger right margin) | |
1238 | * | |
1239 | * start of graphics relative to start of 1st halfline = hdb & 0x200 ? | |
1240 | * (hdb - hht - 2) * prescale + hdboff : | |
1241 | * hdb * prescale + hdboff | |
1242 | * | |
1243 | * end of graphics relative to start of 1st halfline = | |
1244 | * (hde + hht + 2) * prescale + hdeoff | |
1245 | *********************/ | |
1da177e4 | 1246 | /* Calculate VIDEL registers */ |
a1005012 | 1247 | { |
1da177e4 LT |
1248 | prescale = hxx_prescale(&par->hw.falcon); |
1249 | base_off = par->hw.falcon.vid_control & VCO_SHORTOFFS ? 64 : 128; | |
1250 | ||
1251 | /* Offsets depend on video mode */ | |
1252 | /* Offsets are in clock cycles, divide by prescale to | |
1253 | * calculate hd[be]-registers | |
1254 | */ | |
1255 | if (par->hw.falcon.f_shift & 0x100) { | |
1256 | align = 1; | |
1257 | hde_off = 0; | |
1258 | hdb_off = (base_off + 16 * plen) + prescale; | |
a1005012 | 1259 | } else { |
1da177e4 LT |
1260 | align = 128 / bpp; |
1261 | hde_off = ((128 / bpp + 2) * plen); | |
1262 | if (par->hw.falcon.ste_mode) | |
1263 | hdb_off = (64 + base_off + (128 / bpp + 2) * plen) + prescale; | |
1264 | else | |
1265 | hdb_off = (base_off + (128 / bpp + 18) * plen) + prescale; | |
1266 | } | |
1267 | ||
a1005012 | 1268 | gstart = (prescale / 2 + plen * left_margin) / prescale; |
1da177e4 | 1269 | /* gend1 is for hde (gend-gstart multiple of align), shifter's xres */ |
416e74ea | 1270 | gend1 = gstart + roundup(xres, align) * plen / prescale; |
1da177e4 LT |
1271 | /* gend2 is for hbb, visible xres (rest to gend1 is cut off by hblank) */ |
1272 | gend2 = gstart + xres * plen / prescale; | |
1273 | par->HHT = plen * (left_margin + xres + right_margin) / | |
1274 | (2 * prescale) - 2; | |
1275 | /* par->HHT = (gend2 + plen * right_margin / prescale) / 2 - 2;*/ | |
1276 | ||
a1005012 | 1277 | par->HDB = gstart - hdb_off / prescale; |
1da177e4 | 1278 | par->HBE = gstart; |
a1005012 MS |
1279 | if (par->HDB < 0) |
1280 | par->HDB += par->HHT + 2 + 0x200; | |
1281 | par->HDE = gend1 - par->HHT - 2 - hde_off / prescale; | |
1da177e4 LT |
1282 | par->HBB = gend2 - par->HHT - 2; |
1283 | #if 0 | |
1284 | /* One more Videl constraint: data fetch of two lines must not overlap */ | |
a1005012 | 1285 | if ((par->HDB & 0x200) && (par->HDB & ~0x200) - par->HDE <= 5) { |
1da177e4 LT |
1286 | /* if this happens increase margins, decrease hfreq. */ |
1287 | } | |
1288 | #endif | |
1289 | if (hde_off % prescale) | |
1290 | par->HBB++; /* compensate for non matching hde and hbb */ | |
1291 | par->HSS = par->HHT + 2 - plen * hsync_len / prescale; | |
1292 | if (par->HSS < par->HBB) | |
1293 | par->HSS = par->HBB; | |
a1005012 | 1294 | } |
1da177e4 LT |
1295 | |
1296 | /* check hor. frequency */ | |
a1005012 MS |
1297 | hfreq = pclock->f / ((par->HHT + 2) * prescale * 2); |
1298 | if (hfreq > fb_info.monspecs.hfmax && mon_type != F_MON_VGA) { | |
1da177e4 LT |
1299 | /* ++guenther: ^^^^^^^^^^^^^^^^^^^ can't remember why I did this */ |
1300 | /* Too high -> enlarge margin */ | |
1301 | left_margin += 1; | |
1302 | right_margin += 1; | |
1303 | goto again; | |
1304 | } | |
1305 | if (hfreq > fb_info.monspecs.hfmax || hfreq < fb_info.monspecs.hfmin) | |
1306 | return -EINVAL; | |
1307 | ||
1308 | /* Vxx-registers */ | |
1309 | /* All Vxx must be odd in non-interlace, since frame starts in the middle | |
1310 | * of the first displayed line! | |
1311 | * One frame consists of VFT+1 half lines. VFT+1 must be even in | |
1312 | * non-interlace, odd in interlace mode for synchronisation. | |
1313 | * Vxx-registers are 11 bit wide | |
1314 | */ | |
1315 | par->VBE = (upper_margin * 2 + 1); /* must begin on odd halfline */ | |
1316 | par->VDB = par->VBE; | |
1317 | par->VDE = yres; | |
a1005012 MS |
1318 | if (!interlace) |
1319 | par->VDE <<= 1; | |
1320 | if (doubleline) | |
1321 | par->VDE <<= 1; /* VDE now half lines per (half-)frame */ | |
1da177e4 LT |
1322 | par->VDE += par->VDB; |
1323 | par->VBB = par->VDE; | |
1324 | par->VFT = par->VBB + (lower_margin * 2 - 1) - 1; | |
a1005012 | 1325 | par->VSS = par->VFT + 1 - (vsync_len * 2 - 1); |
1da177e4 LT |
1326 | /* vbb,vss,vft must be even in interlace mode */ |
1327 | if (interlace) { | |
1328 | par->VBB++; | |
1329 | par->VSS++; | |
1330 | par->VFT++; | |
1331 | } | |
1332 | ||
1333 | /* V-frequency check, hope I didn't create any loop here. */ | |
1334 | /* Interlace and doubleline are mutually exclusive. */ | |
1335 | vfreq = (hfreq * 2) / (par->VFT + 1); | |
a1005012 | 1336 | if (vfreq > fb_info.monspecs.vfmax && !doubleline && !interlace) { |
1da177e4 LT |
1337 | /* Too high -> try again with doubleline */ |
1338 | doubleline = 1; | |
1339 | goto again; | |
a1005012 | 1340 | } else if (vfreq < fb_info.monspecs.vfmin && !interlace && !doubleline) { |
1da177e4 LT |
1341 | /* Too low -> try again with interlace */ |
1342 | interlace = 1; | |
1343 | goto again; | |
a1005012 | 1344 | } else if (vfreq < fb_info.monspecs.vfmin && doubleline) { |
1da177e4 LT |
1345 | /* Doubleline too low -> clear doubleline and enlarge margins */ |
1346 | int lines; | |
1347 | doubleline = 0; | |
a1005012 MS |
1348 | for (lines = 0; |
1349 | (hfreq * 2) / (par->VFT + 1 + 4 * lines - 2 * yres) > | |
1350 | fb_info.monspecs.vfmax; | |
1da177e4 LT |
1351 | lines++) |
1352 | ; | |
1353 | upper_margin += lines; | |
1354 | lower_margin += lines; | |
1355 | goto again; | |
a1005012 | 1356 | } else if (vfreq > fb_info.monspecs.vfmax && doubleline) { |
1da177e4 LT |
1357 | /* Doubleline too high -> enlarge margins */ |
1358 | int lines; | |
a1005012 MS |
1359 | for (lines = 0; |
1360 | (hfreq * 2) / (par->VFT + 1 + 4 * lines) > | |
1361 | fb_info.monspecs.vfmax; | |
1362 | lines += 2) | |
1da177e4 LT |
1363 | ; |
1364 | upper_margin += lines; | |
1365 | lower_margin += lines; | |
1366 | goto again; | |
a1005012 | 1367 | } else if (vfreq > fb_info.monspecs.vfmax && interlace) { |
1da177e4 LT |
1368 | /* Interlace, too high -> enlarge margins */ |
1369 | int lines; | |
a1005012 MS |
1370 | for (lines = 0; |
1371 | (hfreq * 2) / (par->VFT + 1 + 4 * lines) > | |
1372 | fb_info.monspecs.vfmax; | |
1da177e4 LT |
1373 | lines++) |
1374 | ; | |
1375 | upper_margin += lines; | |
1376 | lower_margin += lines; | |
1377 | goto again; | |
a1005012 MS |
1378 | } else if (vfreq < fb_info.monspecs.vfmin || |
1379 | vfreq > fb_info.monspecs.vfmax) | |
1da177e4 LT |
1380 | return -EINVAL; |
1381 | ||
a1005012 | 1382 | set_screen_base: |
1da177e4 LT |
1383 | linelen = xres_virtual * bpp / 8; |
1384 | if (yres_virtual * linelen > screen_len && screen_len) | |
1385 | return -EINVAL; | |
1386 | if (yres * linelen > screen_len && screen_len) | |
1387 | return -EINVAL; | |
1388 | if (var->yoffset + yres > yres_virtual && yres_virtual) | |
1389 | return -EINVAL; | |
1390 | par->yres_virtual = yres_virtual; | |
1391 | par->screen_base = screen_base + var->yoffset * linelen; | |
1392 | par->hw.falcon.xoffset = 0; | |
1393 | ||
a1005012 | 1394 | par->next_line = linelen; |
a1005012 | 1395 | |
1da177e4 LT |
1396 | return 0; |
1397 | } | |
1398 | ||
a1005012 MS |
1399 | static int falcon_encode_var(struct fb_var_screeninfo *var, |
1400 | struct atafb_par *par) | |
1da177e4 LT |
1401 | { |
1402 | /* !!! only for VGA !!! */ | |
1403 | int linelen; | |
1404 | int prescale, plen; | |
1405 | int hdb_off, hde_off, base_off; | |
1406 | struct falcon_hw *hw = &par->hw.falcon; | |
1407 | ||
1408 | memset(var, 0, sizeof(struct fb_var_screeninfo)); | |
1409 | /* possible frequencies: 25.175 or 32MHz */ | |
1410 | var->pixclock = hw->sync & 0x1 ? fext.t : | |
1411 | hw->vid_control & VCO_CLOCK25 ? f25.t : f32.t; | |
1412 | ||
a1005012 MS |
1413 | var->height = -1; |
1414 | var->width = -1; | |
1da177e4 | 1415 | |
a1005012 | 1416 | var->sync = 0; |
1da177e4 LT |
1417 | if (hw->vid_control & VCO_HSYPOS) |
1418 | var->sync |= FB_SYNC_HOR_HIGH_ACT; | |
1419 | if (hw->vid_control & VCO_VSYPOS) | |
1420 | var->sync |= FB_SYNC_VERT_HIGH_ACT; | |
1421 | ||
1422 | var->vmode = FB_VMODE_NONINTERLACED; | |
1423 | if (hw->vid_mode & VMO_INTER) | |
1424 | var->vmode |= FB_VMODE_INTERLACED; | |
1425 | if (hw->vid_mode & VMO_DOUBLE) | |
1426 | var->vmode |= FB_VMODE_DOUBLE; | |
a1005012 | 1427 | |
1da177e4 LT |
1428 | /* visible y resolution: |
1429 | * Graphics display starts at line VDB and ends at line | |
1430 | * VDE. If interlace mode off unit of VC-registers is | |
1431 | * half lines, else lines. | |
1432 | */ | |
1433 | var->yres = hw->vde - hw->vdb; | |
1434 | if (!(var->vmode & FB_VMODE_INTERLACED)) | |
1435 | var->yres >>= 1; | |
1436 | if (var->vmode & FB_VMODE_DOUBLE) | |
1437 | var->yres >>= 1; | |
1438 | ||
a1005012 MS |
1439 | /* |
1440 | * to get bpp, we must examine f_shift and st_shift. | |
1da177e4 LT |
1441 | * f_shift is valid if any of bits no. 10, 8 or 4 |
1442 | * is set. Priority in f_shift is: 10 ">" 8 ">" 4, i.e. | |
1443 | * if bit 10 set then bit 8 and bit 4 don't care... | |
1444 | * If all these bits are 0 get display depth from st_shift | |
1445 | * (as for ST and STE) | |
1446 | */ | |
a1005012 | 1447 | if (hw->f_shift & 0x400) /* 2 colors */ |
1da177e4 LT |
1448 | var->bits_per_pixel = 1; |
1449 | else if (hw->f_shift & 0x100) /* hicolor */ | |
1450 | var->bits_per_pixel = 16; | |
1451 | else if (hw->f_shift & 0x010) /* 8 bitplanes */ | |
1452 | var->bits_per_pixel = 8; | |
1453 | else if (hw->st_shift == 0) | |
1454 | var->bits_per_pixel = 4; | |
1455 | else if (hw->st_shift == 0x100) | |
1456 | var->bits_per_pixel = 2; | |
a1005012 | 1457 | else /* if (hw->st_shift == 0x200) */ |
1da177e4 LT |
1458 | var->bits_per_pixel = 1; |
1459 | ||
1460 | var->xres = hw->line_width * 16 / var->bits_per_pixel; | |
1461 | var->xres_virtual = var->xres + hw->line_offset * 16 / var->bits_per_pixel; | |
1462 | if (hw->xoffset) | |
1463 | var->xres_virtual += 16; | |
1464 | ||
1465 | if (var->bits_per_pixel == 16) { | |
a1005012 MS |
1466 | var->red.offset = 11; |
1467 | var->red.length = 5; | |
1468 | var->red.msb_right = 0; | |
1469 | var->green.offset = 5; | |
1470 | var->green.length = 6; | |
1471 | var->green.msb_right = 0; | |
1472 | var->blue.offset = 0; | |
1473 | var->blue.length = 5; | |
1474 | var->blue.msb_right = 0; | |
1475 | } else { | |
1476 | var->red.offset = 0; | |
1da177e4 | 1477 | var->red.length = hw->ste_mode ? 4 : 6; |
a1005012 MS |
1478 | if (var->red.length > var->bits_per_pixel) |
1479 | var->red.length = var->bits_per_pixel; | |
1480 | var->red.msb_right = 0; | |
1481 | var->grayscale = 0; | |
1482 | var->blue = var->green = var->red; | |
1da177e4 | 1483 | } |
a1005012 MS |
1484 | var->transp.offset = 0; |
1485 | var->transp.length = 0; | |
1486 | var->transp.msb_right = 0; | |
1da177e4 LT |
1487 | |
1488 | linelen = var->xres_virtual * var->bits_per_pixel / 8; | |
1489 | if (screen_len) { | |
1490 | if (par->yres_virtual) | |
1491 | var->yres_virtual = par->yres_virtual; | |
1492 | else | |
a1005012 | 1493 | /* yres_virtual == 0 means use maximum */ |
1da177e4 | 1494 | var->yres_virtual = screen_len / linelen; |
a1005012 | 1495 | } else { |
1da177e4 LT |
1496 | if (hwscroll < 0) |
1497 | var->yres_virtual = 2 * var->yres; | |
1498 | else | |
a1005012 | 1499 | var->yres_virtual = var->yres + hwscroll * 16; |
1da177e4 | 1500 | } |
a1005012 | 1501 | var->xoffset = 0; /* TODO change this */ |
1da177e4 LT |
1502 | |
1503 | /* hdX-offsets */ | |
1504 | prescale = hxx_prescale(hw); | |
1505 | plen = 4 >> (hw->vid_mode >> 2 & 0x3); | |
1506 | base_off = hw->vid_control & VCO_SHORTOFFS ? 64 : 128; | |
1507 | if (hw->f_shift & 0x100) { | |
1508 | hde_off = 0; | |
1509 | hdb_off = (base_off + 16 * plen) + prescale; | |
a1005012 | 1510 | } else { |
1da177e4 LT |
1511 | hde_off = ((128 / var->bits_per_pixel + 2) * plen); |
1512 | if (hw->ste_mode) | |
1513 | hdb_off = (64 + base_off + (128 / var->bits_per_pixel + 2) * plen) | |
1514 | + prescale; | |
1515 | else | |
1516 | hdb_off = (base_off + (128 / var->bits_per_pixel + 18) * plen) | |
1517 | + prescale; | |
1518 | } | |
1519 | ||
1520 | /* Right margin includes hsync */ | |
1521 | var->left_margin = hdb_off + prescale * ((hw->hdb & 0x1ff) - | |
a1005012 MS |
1522 | (hw->hdb & 0x200 ? 2 + hw->hht : 0)); |
1523 | if (hw->ste_mode || mon_type != F_MON_VGA) | |
1da177e4 LT |
1524 | var->right_margin = prescale * (hw->hht + 2 - hw->hde) - hde_off; |
1525 | else | |
1526 | /* can't use this in ste_mode, because hbb is +1 off */ | |
1527 | var->right_margin = prescale * (hw->hht + 2 - hw->hbb); | |
1528 | var->hsync_len = prescale * (hw->hht + 2 - hw->hss); | |
1529 | ||
1530 | /* Lower margin includes vsync */ | |
a1005012 MS |
1531 | var->upper_margin = hw->vdb / 2; /* round down to full lines */ |
1532 | var->lower_margin = (hw->vft + 1 - hw->vde + 1) / 2; /* round up */ | |
1533 | var->vsync_len = (hw->vft + 1 - hw->vss + 1) / 2; /* round up */ | |
1da177e4 LT |
1534 | if (var->vmode & FB_VMODE_INTERLACED) { |
1535 | var->upper_margin *= 2; | |
1536 | var->lower_margin *= 2; | |
1537 | var->vsync_len *= 2; | |
a1005012 | 1538 | } else if (var->vmode & FB_VMODE_DOUBLE) { |
1da177e4 LT |
1539 | var->upper_margin = (var->upper_margin + 1) / 2; |
1540 | var->lower_margin = (var->lower_margin + 1) / 2; | |
1541 | var->vsync_len = (var->vsync_len + 1) / 2; | |
1542 | } | |
1543 | ||
1544 | var->pixclock *= plen; | |
1545 | var->left_margin /= plen; | |
1546 | var->right_margin /= plen; | |
1547 | var->hsync_len /= plen; | |
1548 | ||
1549 | var->right_margin -= var->hsync_len; | |
1550 | var->lower_margin -= var->vsync_len; | |
1551 | ||
1552 | if (screen_base) | |
a1005012 | 1553 | var->yoffset = (par->screen_base - screen_base) / linelen; |
1da177e4 | 1554 | else |
a1005012 MS |
1555 | var->yoffset = 0; |
1556 | var->nonstd = 0; /* what is this for? */ | |
1557 | var->activate = 0; | |
1da177e4 LT |
1558 | return 0; |
1559 | } | |
1560 | ||
a1005012 | 1561 | static int f_change_mode; |
1da177e4 | 1562 | static struct falcon_hw f_new_mode; |
a1005012 | 1563 | static int f_pan_display; |
1da177e4 | 1564 | |
a1005012 | 1565 | static void falcon_get_par(struct atafb_par *par) |
1da177e4 LT |
1566 | { |
1567 | unsigned long addr; | |
1568 | struct falcon_hw *hw = &par->hw.falcon; | |
1569 | ||
1570 | hw->line_width = shifter_f030.scn_width; | |
1571 | hw->line_offset = shifter_f030.off_next; | |
1572 | hw->st_shift = videl.st_shift & 0x300; | |
1573 | hw->f_shift = videl.f_shift; | |
1574 | hw->vid_control = videl.control; | |
1575 | hw->vid_mode = videl.mode; | |
1576 | hw->sync = shifter.syncmode & 0x1; | |
1577 | hw->xoffset = videl.xoffset & 0xf; | |
1578 | hw->hht = videl.hht; | |
1579 | hw->hbb = videl.hbb; | |
1580 | hw->hbe = videl.hbe; | |
1581 | hw->hdb = videl.hdb; | |
1582 | hw->hde = videl.hde; | |
1583 | hw->hss = videl.hss; | |
1584 | hw->vft = videl.vft; | |
1585 | hw->vbb = videl.vbb; | |
1586 | hw->vbe = videl.vbe; | |
1587 | hw->vdb = videl.vdb; | |
1588 | hw->vde = videl.vde; | |
1589 | hw->vss = videl.vss; | |
1590 | ||
1591 | addr = (shifter.bas_hi & 0xff) << 16 | | |
1592 | (shifter.bas_md & 0xff) << 8 | | |
1593 | (shifter.bas_lo & 0xff); | |
1594 | par->screen_base = phys_to_virt(addr); | |
1595 | ||
1596 | /* derived parameters */ | |
a1005012 | 1597 | hw->ste_mode = (hw->f_shift & 0x510) == 0 && hw->st_shift == 0x100; |
1da177e4 | 1598 | hw->mono = (hw->f_shift & 0x400) || |
a1005012 | 1599 | ((hw->f_shift & 0x510) == 0 && hw->st_shift == 0x200); |
1da177e4 LT |
1600 | } |
1601 | ||
a1005012 | 1602 | static void falcon_set_par(struct atafb_par *par) |
1da177e4 LT |
1603 | { |
1604 | f_change_mode = 0; | |
1605 | ||
1606 | /* only set screen_base if really necessary */ | |
1607 | if (current_par.screen_base != par->screen_base) | |
1608 | fbhw->set_screen_base(par->screen_base); | |
1609 | ||
1610 | /* Don't touch any other registers if we keep the default resolution */ | |
1611 | if (DontCalcRes) | |
1612 | return; | |
1613 | ||
1614 | /* Tell vbl-handler to change video mode. | |
1615 | * We change modes only on next VBL, to avoid desynchronisation | |
1616 | * (a shift to the right and wrap around by a random number of pixels | |
1617 | * in all monochrome modes). | |
1618 | * This seems to work on my Falcon. | |
1619 | */ | |
1620 | f_new_mode = par->hw.falcon; | |
1621 | f_change_mode = 1; | |
1622 | } | |
1623 | ||
a1005012 | 1624 | static irqreturn_t falcon_vbl_switcher(int irq, void *dummy) |
1da177e4 LT |
1625 | { |
1626 | struct falcon_hw *hw = &f_new_mode; | |
1627 | ||
1628 | if (f_change_mode) { | |
1629 | f_change_mode = 0; | |
1630 | ||
1631 | if (hw->sync & 0x1) { | |
1632 | /* Enable external pixelclock. This code only for ScreenWonder */ | |
a1005012 MS |
1633 | *(volatile unsigned short *)0xffff9202 = 0xffbf; |
1634 | } else { | |
1da177e4 | 1635 | /* Turn off external clocks. Read sets all output bits to 1. */ |
a1005012 | 1636 | *(volatile unsigned short *)0xffff9202; |
1da177e4 LT |
1637 | } |
1638 | shifter.syncmode = hw->sync; | |
1639 | ||
1640 | videl.hht = hw->hht; | |
1641 | videl.hbb = hw->hbb; | |
1642 | videl.hbe = hw->hbe; | |
1643 | videl.hdb = hw->hdb; | |
1644 | videl.hde = hw->hde; | |
1645 | videl.hss = hw->hss; | |
1646 | videl.vft = hw->vft; | |
1647 | videl.vbb = hw->vbb; | |
1648 | videl.vbe = hw->vbe; | |
1649 | videl.vdb = hw->vdb; | |
1650 | videl.vde = hw->vde; | |
1651 | videl.vss = hw->vss; | |
1652 | ||
a1005012 | 1653 | videl.f_shift = 0; /* write enables Falcon palette, 0: 4 planes */ |
1da177e4 | 1654 | if (hw->ste_mode) { |
a1005012 MS |
1655 | videl.st_shift = hw->st_shift; /* write enables STE palette */ |
1656 | } else { | |
1da177e4 | 1657 | /* IMPORTANT: |
a1005012 | 1658 | * set st_shift 0, so we can tell the screen-depth if f_shift == 0. |
1da177e4 | 1659 | * Writing 0 to f_shift enables 4 plane Falcon mode but |
a1005012 | 1660 | * doesn't set st_shift. st_shift != 0 (!= 4planes) is impossible |
1da177e4 LT |
1661 | * with Falcon palette. |
1662 | */ | |
1663 | videl.st_shift = 0; | |
1664 | /* now back to Falcon palette mode */ | |
1665 | videl.f_shift = hw->f_shift; | |
1666 | } | |
1667 | /* writing to st_shift changed scn_width and vid_mode */ | |
1668 | videl.xoffset = hw->xoffset; | |
1669 | shifter_f030.scn_width = hw->line_width; | |
1670 | shifter_f030.off_next = hw->line_offset; | |
1671 | videl.control = hw->vid_control; | |
1672 | videl.mode = hw->vid_mode; | |
1673 | } | |
1674 | if (f_pan_display) { | |
1675 | f_pan_display = 0; | |
1676 | videl.xoffset = current_par.hw.falcon.xoffset; | |
1677 | shifter_f030.off_next = current_par.hw.falcon.line_offset; | |
1678 | } | |
1679 | return IRQ_HANDLED; | |
1680 | } | |
1681 | ||
a1005012 MS |
1682 | static int falcon_pan_display(struct fb_var_screeninfo *var, |
1683 | struct fb_info *info) | |
1da177e4 | 1684 | { |
a1005012 MS |
1685 | struct atafb_par *par = (struct atafb_par *)info->par; |
1686 | ||
1da177e4 | 1687 | int xoffset; |
a1005012 | 1688 | int bpp = info->var.bits_per_pixel; |
1da177e4 LT |
1689 | |
1690 | if (bpp == 1) | |
1691 | var->xoffset = up(var->xoffset, 32); | |
1692 | if (bpp != 16) | |
1693 | par->hw.falcon.xoffset = var->xoffset & 15; | |
1694 | else { | |
1695 | par->hw.falcon.xoffset = 0; | |
1696 | var->xoffset = up(var->xoffset, 2); | |
1697 | } | |
1698 | par->hw.falcon.line_offset = bpp * | |
a1005012 | 1699 | (info->var.xres_virtual - info->var.xres) / 16; |
1da177e4 LT |
1700 | if (par->hw.falcon.xoffset) |
1701 | par->hw.falcon.line_offset -= bpp; | |
1702 | xoffset = var->xoffset - par->hw.falcon.xoffset; | |
1703 | ||
1704 | par->screen_base = screen_base + | |
a1005012 | 1705 | (var->yoffset * info->var.xres_virtual + xoffset) * bpp / 8; |
1da177e4 | 1706 | if (fbhw->set_screen_base) |
a1005012 | 1707 | fbhw->set_screen_base(par->screen_base); |
1da177e4 | 1708 | else |
a1005012 | 1709 | return -EINVAL; /* shouldn't happen */ |
1da177e4 LT |
1710 | f_pan_display = 1; |
1711 | return 0; | |
1712 | } | |
1713 | ||
a1005012 MS |
1714 | static int falcon_setcolreg(unsigned int regno, unsigned int red, |
1715 | unsigned int green, unsigned int blue, | |
1716 | unsigned int transp, struct fb_info *info) | |
1da177e4 LT |
1717 | { |
1718 | if (regno > 255) | |
1719 | return 1; | |
1720 | f030_col[regno] = (((red & 0xfc00) << 16) | | |
1721 | ((green & 0xfc00) << 8) | | |
1722 | ((blue & 0xfc00) >> 8)); | |
1723 | if (regno < 16) { | |
1724 | shifter_tt.color_reg[regno] = | |
1725 | (((red & 0xe000) >> 13) | ((red & 0x1000) >> 12) << 8) | | |
1726 | (((green & 0xe000) >> 13) | ((green & 0x1000) >> 12) << 4) | | |
1727 | ((blue & 0xe000) >> 13) | ((blue & 0x1000) >> 12); | |
74511413 GU |
1728 | #ifdef ATAFB_FALCON |
1729 | ((u32 *)info->pseudo_palette)[regno] = ((red & 0xf800) | | |
1730 | ((green & 0xfc00) >> 5) | | |
1731 | ((blue & 0xf800) >> 11)); | |
1da177e4 LT |
1732 | #endif |
1733 | } | |
1734 | return 0; | |
1735 | } | |
1736 | ||
a1005012 | 1737 | static int falcon_blank(int blank_mode) |
1da177e4 | 1738 | { |
a1005012 MS |
1739 | /* ++guenther: we can switch off graphics by changing VDB and VDE, |
1740 | * so VIDEL doesn't hog the bus while saving. | |
1741 | * (this may affect usleep()). | |
1742 | */ | |
1da177e4 LT |
1743 | int vdb, vss, hbe, hss; |
1744 | ||
1745 | if (mon_type == F_MON_SM) /* this doesn't work on SM124 */ | |
1746 | return 1; | |
1747 | ||
1748 | vdb = current_par.VDB; | |
1749 | vss = current_par.VSS; | |
1750 | hbe = current_par.HBE; | |
1751 | hss = current_par.HSS; | |
1752 | ||
1753 | if (blank_mode >= 1) { | |
1754 | /* disable graphics output (this speeds up the CPU) ... */ | |
1755 | vdb = current_par.VFT + 1; | |
1756 | /* ... and blank all lines */ | |
1757 | hbe = current_par.HHT + 2; | |
1758 | } | |
1759 | /* use VESA suspend modes on VGA monitors */ | |
1760 | if (mon_type == F_MON_VGA) { | |
1761 | if (blank_mode == 2 || blank_mode == 4) | |
1762 | vss = current_par.VFT + 1; | |
1763 | if (blank_mode == 3 || blank_mode == 4) | |
1764 | hss = current_par.HHT + 2; | |
1765 | } | |
1766 | ||
1767 | videl.vdb = vdb; | |
1768 | videl.vss = vss; | |
1769 | videl.hbe = hbe; | |
1770 | videl.hss = hss; | |
1771 | ||
1772 | return 0; | |
1773 | } | |
1774 | ||
a1005012 | 1775 | static int falcon_detect(void) |
1da177e4 LT |
1776 | { |
1777 | struct atafb_par par; | |
1778 | unsigned char fhw; | |
1779 | ||
1780 | /* Determine connected monitor and set monitor parameters */ | |
a1005012 | 1781 | fhw = *(unsigned char *)0xffff8006; |
1da177e4 LT |
1782 | mon_type = fhw >> 6 & 0x3; |
1783 | /* bit 1 of fhw: 1=32 bit ram bus, 0=16 bit */ | |
1784 | f030_bus_width = fhw << 6 & 0x80; | |
1785 | switch (mon_type) { | |
1786 | case F_MON_SM: | |
1787 | fb_info.monspecs.vfmin = 70; | |
1788 | fb_info.monspecs.vfmax = 72; | |
1789 | fb_info.monspecs.hfmin = 35713; | |
1790 | fb_info.monspecs.hfmax = 35715; | |
1791 | break; | |
1792 | case F_MON_SC: | |
1793 | case F_MON_TV: | |
1794 | /* PAL...NTSC */ | |
a1005012 | 1795 | fb_info.monspecs.vfmin = 49; /* not 50, since TOS defaults to 49.9x Hz */ |
1da177e4 LT |
1796 | fb_info.monspecs.vfmax = 60; |
1797 | fb_info.monspecs.hfmin = 15620; | |
1798 | fb_info.monspecs.hfmax = 15755; | |
1799 | break; | |
1800 | } | |
1801 | /* initialize hsync-len */ | |
1802 | f25.hsync = h_syncs[mon_type] / f25.t; | |
1803 | f32.hsync = h_syncs[mon_type] / f32.t; | |
1804 | if (fext.t) | |
1805 | fext.hsync = h_syncs[mon_type] / fext.t; | |
1806 | ||
1807 | falcon_get_par(&par); | |
1808 | falcon_encode_var(&atafb_predefined[0], &par); | |
1809 | ||
1810 | /* Detected mode is always the "autodetect" slot */ | |
1811 | return 1; | |
1812 | } | |
1813 | ||
1814 | #endif /* ATAFB_FALCON */ | |
1815 | ||
1816 | /* ------------------- ST(E) specific functions ---------------------- */ | |
1817 | ||
1818 | #ifdef ATAFB_STE | |
1819 | ||
a1005012 MS |
1820 | static int stste_encode_fix(struct fb_fix_screeninfo *fix, |
1821 | struct atafb_par *par) | |
1da177e4 LT |
1822 | { |
1823 | int mode; | |
1824 | ||
a1005012 | 1825 | strcpy(fix->id, "Atari Builtin"); |
1da177e4 LT |
1826 | fix->smem_start = (unsigned long)real_screen_base; |
1827 | fix->smem_len = screen_len; | |
1828 | fix->type = FB_TYPE_INTERLEAVED_PLANES; | |
1829 | fix->type_aux = 2; | |
1830 | fix->visual = FB_VISUAL_PSEUDOCOLOR; | |
1831 | mode = par->hw.st.mode & 3; | |
1832 | if (mode == ST_HIGH) { | |
1833 | fix->type = FB_TYPE_PACKED_PIXELS; | |
1834 | fix->type_aux = 0; | |
1835 | fix->visual = FB_VISUAL_MONO10; | |
1836 | } | |
1837 | if (ATARIHW_PRESENT(EXTD_SHIFTER)) { | |
1838 | fix->xpanstep = 16; | |
1839 | fix->ypanstep = 1; | |
1840 | } else { | |
1841 | fix->xpanstep = 0; | |
1842 | fix->ypanstep = 0; | |
1843 | } | |
1844 | fix->ywrapstep = 0; | |
02603930 | 1845 | fix->line_length = par->next_line; |
1da177e4 LT |
1846 | fix->accel = FB_ACCEL_ATARIBLITT; |
1847 | return 0; | |
1848 | } | |
1849 | ||
a1005012 MS |
1850 | static int stste_decode_var(struct fb_var_screeninfo *var, |
1851 | struct atafb_par *par) | |
1da177e4 | 1852 | { |
a1005012 MS |
1853 | int xres = var->xres; |
1854 | int yres = var->yres; | |
1855 | int bpp = var->bits_per_pixel; | |
1da177e4 LT |
1856 | int linelen; |
1857 | int yres_virtual = var->yres_virtual; | |
1858 | ||
1859 | if (mono_moni) { | |
1860 | if (bpp > 1 || xres > sttt_xres || yres > st_yres) | |
1861 | return -EINVAL; | |
a1005012 MS |
1862 | par->hw.st.mode = ST_HIGH; |
1863 | xres = sttt_xres; | |
1864 | yres = st_yres; | |
1865 | bpp = 1; | |
1da177e4 LT |
1866 | } else { |
1867 | if (bpp > 4 || xres > sttt_xres || yres > st_yres) | |
1868 | return -EINVAL; | |
1869 | if (bpp > 2) { | |
a1005012 | 1870 | if (xres > sttt_xres / 2 || yres > st_yres / 2) |
1da177e4 | 1871 | return -EINVAL; |
a1005012 MS |
1872 | par->hw.st.mode = ST_LOW; |
1873 | xres = sttt_xres / 2; | |
1874 | yres = st_yres / 2; | |
1875 | bpp = 4; | |
1876 | } else if (bpp > 1) { | |
1877 | if (xres > sttt_xres || yres > st_yres / 2) | |
1da177e4 | 1878 | return -EINVAL; |
a1005012 MS |
1879 | par->hw.st.mode = ST_MID; |
1880 | xres = sttt_xres; | |
1881 | yres = st_yres / 2; | |
1882 | bpp = 2; | |
1883 | } else | |
1da177e4 LT |
1884 | return -EINVAL; |
1885 | } | |
1886 | if (yres_virtual <= 0) | |
1887 | yres_virtual = 0; | |
1888 | else if (yres_virtual < yres) | |
1889 | yres_virtual = yres; | |
1890 | if (var->sync & FB_SYNC_EXT) | |
a1005012 | 1891 | par->hw.st.sync = (par->hw.st.sync & ~1) | 1; |
1da177e4 | 1892 | else |
a1005012 MS |
1893 | par->hw.st.sync = (par->hw.st.sync & ~1); |
1894 | linelen = xres * bpp / 8; | |
1da177e4 LT |
1895 | if (yres_virtual * linelen > screen_len && screen_len) |
1896 | return -EINVAL; | |
1897 | if (yres * linelen > screen_len && screen_len) | |
1898 | return -EINVAL; | |
1899 | if (var->yoffset + yres > yres_virtual && yres_virtual) | |
1900 | return -EINVAL; | |
1901 | par->yres_virtual = yres_virtual; | |
a1005012 | 1902 | par->screen_base = screen_base + var->yoffset * linelen; |
02603930 | 1903 | par->next_line = linelen; |
1da177e4 LT |
1904 | return 0; |
1905 | } | |
1906 | ||
a1005012 MS |
1907 | static int stste_encode_var(struct fb_var_screeninfo *var, |
1908 | struct atafb_par *par) | |
1da177e4 LT |
1909 | { |
1910 | int linelen; | |
1911 | memset(var, 0, sizeof(struct fb_var_screeninfo)); | |
a1005012 | 1912 | var->red.offset = 0; |
1da177e4 | 1913 | var->red.length = ATARIHW_PRESENT(EXTD_SHIFTER) ? 4 : 3; |
a1005012 MS |
1914 | var->red.msb_right = 0; |
1915 | var->grayscale = 0; | |
1da177e4 | 1916 | |
a1005012 MS |
1917 | var->pixclock = 31041; |
1918 | var->left_margin = 120; /* these are incorrect */ | |
1919 | var->right_margin = 100; | |
1920 | var->upper_margin = 8; | |
1921 | var->lower_margin = 16; | |
1922 | var->hsync_len = 140; | |
1923 | var->vsync_len = 30; | |
1da177e4 | 1924 | |
a1005012 MS |
1925 | var->height = -1; |
1926 | var->width = -1; | |
1da177e4 LT |
1927 | |
1928 | if (!(par->hw.st.sync & 1)) | |
a1005012 | 1929 | var->sync = 0; |
1da177e4 | 1930 | else |
a1005012 | 1931 | var->sync = FB_SYNC_EXT; |
1da177e4 LT |
1932 | |
1933 | switch (par->hw.st.mode & 3) { | |
1934 | case ST_LOW: | |
a1005012 MS |
1935 | var->xres = sttt_xres / 2; |
1936 | var->yres = st_yres / 2; | |
1937 | var->bits_per_pixel = 4; | |
1da177e4 LT |
1938 | break; |
1939 | case ST_MID: | |
a1005012 MS |
1940 | var->xres = sttt_xres; |
1941 | var->yres = st_yres / 2; | |
1942 | var->bits_per_pixel = 2; | |
1da177e4 LT |
1943 | break; |
1944 | case ST_HIGH: | |
a1005012 MS |
1945 | var->xres = sttt_xres; |
1946 | var->yres = st_yres; | |
1947 | var->bits_per_pixel = 1; | |
1da177e4 | 1948 | break; |
a1005012 MS |
1949 | } |
1950 | var->blue = var->green = var->red; | |
1951 | var->transp.offset = 0; | |
1952 | var->transp.length = 0; | |
1953 | var->transp.msb_right = 0; | |
1954 | var->xres_virtual = sttt_xres_virtual; | |
1955 | linelen = var->xres_virtual * var->bits_per_pixel / 8; | |
1956 | ovsc_addlen = linelen * (sttt_yres_virtual - st_yres); | |
1957 | ||
1958 | if (!use_hwscroll) | |
1959 | var->yres_virtual = var->yres; | |
1da177e4 LT |
1960 | else if (screen_len) { |
1961 | if (par->yres_virtual) | |
1962 | var->yres_virtual = par->yres_virtual; | |
1963 | else | |
a1005012 | 1964 | /* yres_virtual == 0 means use maximum */ |
1da177e4 | 1965 | var->yres_virtual = screen_len / linelen; |
a1005012 | 1966 | } else { |
1da177e4 LT |
1967 | if (hwscroll < 0) |
1968 | var->yres_virtual = 2 * var->yres; | |
1969 | else | |
a1005012 | 1970 | var->yres_virtual = var->yres + hwscroll * 16; |
1da177e4 | 1971 | } |
a1005012 | 1972 | var->xoffset = 0; |
1da177e4 | 1973 | if (screen_base) |
a1005012 | 1974 | var->yoffset = (par->screen_base - screen_base) / linelen; |
1da177e4 | 1975 | else |
a1005012 MS |
1976 | var->yoffset = 0; |
1977 | var->nonstd = 0; | |
1978 | var->activate = 0; | |
1979 | var->vmode = FB_VMODE_NONINTERLACED; | |
1da177e4 LT |
1980 | return 0; |
1981 | } | |
1982 | ||
a1005012 | 1983 | static void stste_get_par(struct atafb_par *par) |
1da177e4 LT |
1984 | { |
1985 | unsigned long addr; | |
a1005012 MS |
1986 | par->hw.st.mode = shifter_tt.st_shiftmode; |
1987 | par->hw.st.sync = shifter.syncmode; | |
1da177e4 LT |
1988 | addr = ((shifter.bas_hi & 0xff) << 16) | |
1989 | ((shifter.bas_md & 0xff) << 8); | |
1990 | if (ATARIHW_PRESENT(EXTD_SHIFTER)) | |
1991 | addr |= (shifter.bas_lo & 0xff); | |
1992 | par->screen_base = phys_to_virt(addr); | |
1993 | } | |
1994 | ||
a1005012 | 1995 | static void stste_set_par(struct atafb_par *par) |
1da177e4 | 1996 | { |
a1005012 MS |
1997 | shifter_tt.st_shiftmode = par->hw.st.mode; |
1998 | shifter.syncmode = par->hw.st.sync; | |
1da177e4 LT |
1999 | /* only set screen_base if really necessary */ |
2000 | if (current_par.screen_base != par->screen_base) | |
2001 | fbhw->set_screen_base(par->screen_base); | |
2002 | } | |
2003 | ||
a1005012 MS |
2004 | static int stste_setcolreg(unsigned int regno, unsigned int red, |
2005 | unsigned int green, unsigned int blue, | |
2006 | unsigned int transp, struct fb_info *info) | |
1da177e4 LT |
2007 | { |
2008 | if (regno > 15) | |
2009 | return 1; | |
2010 | red >>= 12; | |
2011 | blue >>= 12; | |
2012 | green >>= 12; | |
2013 | if (ATARIHW_PRESENT(EXTD_SHIFTER)) | |
2014 | shifter_tt.color_reg[regno] = | |
2015 | (((red & 0xe) >> 1) | ((red & 1) << 3) << 8) | | |
2016 | (((green & 0xe) >> 1) | ((green & 1) << 3) << 4) | | |
2017 | ((blue & 0xe) >> 1) | ((blue & 1) << 3); | |
2018 | else | |
2019 | shifter_tt.color_reg[regno] = | |
2020 | ((red & 0xe) << 7) | | |
2021 | ((green & 0xe) << 3) | | |
2022 | ((blue & 0xe) >> 1); | |
2023 | return 0; | |
2024 | } | |
2025 | ||
a1005012 MS |
2026 | static int stste_detect(void) |
2027 | { | |
2028 | struct atafb_par par; | |
1da177e4 LT |
2029 | |
2030 | /* Determine the connected monitor: The DMA sound must be | |
2031 | * disabled before reading the MFP GPIP, because the Sound | |
2032 | * Done Signal and the Monochrome Detect are XORed together! | |
2033 | */ | |
2034 | if (ATARIHW_PRESENT(PCM_8BIT)) { | |
2035 | tt_dmasnd.ctrl = DMASND_CTRL_OFF; | |
a1005012 | 2036 | udelay(20); /* wait a while for things to settle down */ |
1da177e4 LT |
2037 | } |
2038 | mono_moni = (mfp.par_dt_reg & 0x80) == 0; | |
2039 | ||
2040 | stste_get_par(&par); | |
2041 | stste_encode_var(&atafb_predefined[0], &par); | |
2042 | ||
2043 | if (!ATARIHW_PRESENT(EXTD_SHIFTER)) | |
2044 | use_hwscroll = 0; | |
2045 | return 1; | |
2046 | } | |
2047 | ||
2048 | static void stste_set_screen_base(void *s_base) | |
2049 | { | |
2050 | unsigned long addr; | |
a1005012 | 2051 | addr = virt_to_phys(s_base); |
1da177e4 | 2052 | /* Setup Screen Memory */ |
a1005012 MS |
2053 | shifter.bas_hi = (unsigned char)((addr & 0xff0000) >> 16); |
2054 | shifter.bas_md = (unsigned char)((addr & 0x00ff00) >> 8); | |
1da177e4 | 2055 | if (ATARIHW_PRESENT(EXTD_SHIFTER)) |
a1005012 | 2056 | shifter.bas_lo = (unsigned char)(addr & 0x0000ff); |
1da177e4 LT |
2057 | } |
2058 | ||
2059 | #endif /* ATAFB_STE */ | |
2060 | ||
2061 | /* Switching the screen size should be done during vsync, otherwise | |
2062 | * the margins may get messed up. This is a well known problem of | |
2063 | * the ST's video system. | |
2064 | * | |
2065 | * Unfortunately there is hardly any way to find the vsync, as the | |
2066 | * vertical blank interrupt is no longer in time on machines with | |
2067 | * overscan type modifications. | |
2068 | * | |
2069 | * We can, however, use Timer B to safely detect the black shoulder, | |
2070 | * but then we've got to guess an appropriate delay to find the vsync. | |
2071 | * This might not work on every machine. | |
2072 | * | |
2073 | * martin_rogge @ ki.maus.de, 8th Aug 1995 | |
2074 | */ | |
2075 | ||
2076 | #define LINE_DELAY (mono_moni ? 30 : 70) | |
2077 | #define SYNC_DELAY (mono_moni ? 1500 : 2000) | |
2078 | ||
2079 | /* SWITCH_ACIA may be used for Falcon (ScreenBlaster III internal!) */ | |
2080 | static void st_ovsc_switch(void) | |
2081 | { | |
a1005012 MS |
2082 | unsigned long flags; |
2083 | register unsigned char old, new; | |
1da177e4 | 2084 | |
a1005012 MS |
2085 | if (!(atari_switches & ATARI_SWITCH_OVSC_MASK)) |
2086 | return; | |
2087 | local_irq_save(flags); | |
2088 | ||
2089 | mfp.tim_ct_b = 0x10; | |
2090 | mfp.active_edge |= 8; | |
2091 | mfp.tim_ct_b = 0; | |
2092 | mfp.tim_dt_b = 0xf0; | |
2093 | mfp.tim_ct_b = 8; | |
2094 | while (mfp.tim_dt_b > 1) /* TOS does it this way, don't ask why */ | |
2095 | ; | |
1da177e4 | 2096 | new = mfp.tim_dt_b; |
a1005012 MS |
2097 | do { |
2098 | udelay(LINE_DELAY); | |
2099 | old = new; | |
2100 | new = mfp.tim_dt_b; | |
2101 | } while (old != new); | |
2102 | mfp.tim_ct_b = 0x10; | |
2103 | udelay(SYNC_DELAY); | |
2104 | ||
2105 | if (atari_switches & ATARI_SWITCH_OVSC_IKBD) | |
2106 | acia.key_ctrl = ACIA_DIV64 | ACIA_D8N1S | ACIA_RHTID | ACIA_RIE; | |
2107 | if (atari_switches & ATARI_SWITCH_OVSC_MIDI) | |
2108 | acia.mid_ctrl = ACIA_DIV16 | ACIA_D8N1S | ACIA_RHTID; | |
2109 | if (atari_switches & (ATARI_SWITCH_OVSC_SND6|ATARI_SWITCH_OVSC_SND7)) { | |
2110 | sound_ym.rd_data_reg_sel = 14; | |
2111 | sound_ym.wd_data = sound_ym.rd_data_reg_sel | | |
2112 | ((atari_switches & ATARI_SWITCH_OVSC_SND6) ? 0x40:0) | | |
2113 | ((atari_switches & ATARI_SWITCH_OVSC_SND7) ? 0x80:0); | |
2114 | } | |
2115 | local_irq_restore(flags); | |
1da177e4 LT |
2116 | } |
2117 | ||
2118 | /* ------------------- External Video ---------------------- */ | |
2119 | ||
2120 | #ifdef ATAFB_EXT | |
2121 | ||
a1005012 | 2122 | static int ext_encode_fix(struct fb_fix_screeninfo *fix, struct atafb_par *par) |
1da177e4 | 2123 | { |
a1005012 | 2124 | strcpy(fix->id, "Unknown Extern"); |
1da177e4 LT |
2125 | fix->smem_start = (unsigned long)external_addr; |
2126 | fix->smem_len = PAGE_ALIGN(external_len); | |
2127 | if (external_depth == 1) { | |
2128 | fix->type = FB_TYPE_PACKED_PIXELS; | |
2129 | /* The letters 'n' and 'i' in the "atavideo=external:" stand | |
2130 | * for "normal" and "inverted", rsp., in the monochrome case */ | |
2131 | fix->visual = | |
2132 | (external_pmode == FB_TYPE_INTERLEAVED_PLANES || | |
2133 | external_pmode == FB_TYPE_PACKED_PIXELS) ? | |
a1005012 MS |
2134 | FB_VISUAL_MONO10 : FB_VISUAL_MONO01; |
2135 | } else { | |
1da177e4 LT |
2136 | /* Use STATIC if we don't know how to access color registers */ |
2137 | int visual = external_vgaiobase ? | |
2138 | FB_VISUAL_PSEUDOCOLOR : | |
2139 | FB_VISUAL_STATIC_PSEUDOCOLOR; | |
2140 | switch (external_pmode) { | |
a1005012 MS |
2141 | case -1: /* truecolor */ |
2142 | fix->type = FB_TYPE_PACKED_PIXELS; | |
2143 | fix->visual = FB_VISUAL_TRUECOLOR; | |
1da177e4 | 2144 | break; |
a1005012 MS |
2145 | case FB_TYPE_PACKED_PIXELS: |
2146 | fix->type = FB_TYPE_PACKED_PIXELS; | |
2147 | fix->visual = visual; | |
1da177e4 | 2148 | break; |
a1005012 MS |
2149 | case FB_TYPE_PLANES: |
2150 | fix->type = FB_TYPE_PLANES; | |
2151 | fix->visual = visual; | |
1da177e4 | 2152 | break; |
a1005012 MS |
2153 | case FB_TYPE_INTERLEAVED_PLANES: |
2154 | fix->type = FB_TYPE_INTERLEAVED_PLANES; | |
2155 | fix->type_aux = 2; | |
2156 | fix->visual = visual; | |
1da177e4 LT |
2157 | break; |
2158 | } | |
2159 | } | |
2160 | fix->xpanstep = 0; | |
2161 | fix->ypanstep = 0; | |
2162 | fix->ywrapstep = 0; | |
02603930 | 2163 | fix->line_length = par->next_line; |
1da177e4 LT |
2164 | return 0; |
2165 | } | |
2166 | ||
a1005012 | 2167 | static int ext_decode_var(struct fb_var_screeninfo *var, struct atafb_par *par) |
1da177e4 LT |
2168 | { |
2169 | struct fb_var_screeninfo *myvar = &atafb_predefined[0]; | |
a1005012 | 2170 | |
1da177e4 | 2171 | if (var->bits_per_pixel > myvar->bits_per_pixel || |
a1005012 MS |
2172 | var->xres > myvar->xres || |
2173 | var->xres_virtual > myvar->xres_virtual || | |
2174 | var->yres > myvar->yres || | |
2175 | var->xoffset > 0 || | |
2176 | var->yoffset > 0) | |
1da177e4 | 2177 | return -EINVAL; |
02603930 GU |
2178 | |
2179 | par->next_line = external_xres_virtual * external_depth / 8; | |
1da177e4 LT |
2180 | return 0; |
2181 | } | |
2182 | ||
a1005012 | 2183 | static int ext_encode_var(struct fb_var_screeninfo *var, struct atafb_par *par) |
1da177e4 LT |
2184 | { |
2185 | memset(var, 0, sizeof(struct fb_var_screeninfo)); | |
a1005012 MS |
2186 | var->red.offset = 0; |
2187 | var->red.length = (external_pmode == -1) ? external_depth / 3 : | |
1da177e4 | 2188 | (external_vgaiobase ? external_bitspercol : 0); |
a1005012 MS |
2189 | var->red.msb_right = 0; |
2190 | var->grayscale = 0; | |
1da177e4 | 2191 | |
a1005012 MS |
2192 | var->pixclock = 31041; |
2193 | var->left_margin = 120; /* these are surely incorrect */ | |
2194 | var->right_margin = 100; | |
2195 | var->upper_margin = 8; | |
2196 | var->lower_margin = 16; | |
2197 | var->hsync_len = 140; | |
2198 | var->vsync_len = 30; | |
1da177e4 | 2199 | |
a1005012 MS |
2200 | var->height = -1; |
2201 | var->width = -1; | |
1da177e4 | 2202 | |
a1005012 | 2203 | var->sync = 0; |
1da177e4 LT |
2204 | |
2205 | var->xres = external_xres; | |
2206 | var->yres = external_yres; | |
2207 | var->xres_virtual = external_xres_virtual; | |
2208 | var->bits_per_pixel = external_depth; | |
a1005012 MS |
2209 | |
2210 | var->blue = var->green = var->red; | |
2211 | var->transp.offset = 0; | |
2212 | var->transp.length = 0; | |
2213 | var->transp.msb_right = 0; | |
2214 | var->yres_virtual = var->yres; | |
2215 | var->xoffset = 0; | |
2216 | var->yoffset = 0; | |
2217 | var->nonstd = 0; | |
2218 | var->activate = 0; | |
2219 | var->vmode = FB_VMODE_NONINTERLACED; | |
1da177e4 LT |
2220 | return 0; |
2221 | } | |
2222 | ||
a1005012 | 2223 | static void ext_get_par(struct atafb_par *par) |
1da177e4 LT |
2224 | { |
2225 | par->screen_base = external_addr; | |
2226 | } | |
2227 | ||
a1005012 | 2228 | static void ext_set_par(struct atafb_par *par) |
1da177e4 LT |
2229 | { |
2230 | } | |
2231 | ||
2232 | #define OUTB(port,val) \ | |
a1005012 | 2233 | *((unsigned volatile char *) ((port)+external_vgaiobase)) = (val) |
1da177e4 LT |
2234 | #define INB(port) \ |
2235 | (*((unsigned volatile char *) ((port)+external_vgaiobase))) | |
a1005012 | 2236 | #define DACDelay \ |
1da177e4 | 2237 | do { \ |
a1005012 MS |
2238 | unsigned char tmp = INB(0x3da); \ |
2239 | tmp = INB(0x3da); \ | |
1da177e4 LT |
2240 | } while (0) |
2241 | ||
a1005012 MS |
2242 | static int ext_setcolreg(unsigned int regno, unsigned int red, |
2243 | unsigned int green, unsigned int blue, | |
2244 | unsigned int transp, struct fb_info *info) | |
1da177e4 | 2245 | { |
a1005012 | 2246 | unsigned char colmask = (1 << external_bitspercol) - 1; |
1da177e4 | 2247 | |
a1005012 | 2248 | if (!external_vgaiobase) |
1da177e4 LT |
2249 | return 1; |
2250 | ||
1da177e4 | 2251 | switch (external_card_type) { |
a1005012 MS |
2252 | case IS_VGA: |
2253 | OUTB(0x3c8, regno); | |
2254 | DACDelay; | |
2255 | OUTB(0x3c9, red & colmask); | |
2256 | DACDelay; | |
2257 | OUTB(0x3c9, green & colmask); | |
2258 | DACDelay; | |
2259 | OUTB(0x3c9, blue & colmask); | |
2260 | DACDelay; | |
2261 | return 0; | |
1da177e4 | 2262 | |
a1005012 MS |
2263 | case IS_MV300: |
2264 | OUTB((MV300_reg[regno] << 2) + 1, red); | |
2265 | OUTB((MV300_reg[regno] << 2) + 1, green); | |
2266 | OUTB((MV300_reg[regno] << 2) + 1, blue); | |
2267 | return 0; | |
1da177e4 | 2268 | |
a1005012 MS |
2269 | default: |
2270 | return 1; | |
2271 | } | |
2272 | } | |
2273 | ||
2274 | static int ext_detect(void) | |
1da177e4 LT |
2275 | { |
2276 | struct fb_var_screeninfo *myvar = &atafb_predefined[0]; | |
2277 | struct atafb_par dummy_par; | |
2278 | ||
2279 | myvar->xres = external_xres; | |
2280 | myvar->xres_virtual = external_xres_virtual; | |
2281 | myvar->yres = external_yres; | |
2282 | myvar->bits_per_pixel = external_depth; | |
2283 | ext_encode_var(myvar, &dummy_par); | |
2284 | return 1; | |
2285 | } | |
2286 | ||
2287 | #endif /* ATAFB_EXT */ | |
2288 | ||
2289 | /* ------ This is the same for most hardware types -------- */ | |
2290 | ||
2291 | static void set_screen_base(void *s_base) | |
2292 | { | |
2293 | unsigned long addr; | |
a1005012 MS |
2294 | |
2295 | addr = virt_to_phys(s_base); | |
1da177e4 | 2296 | /* Setup Screen Memory */ |
a1005012 MS |
2297 | shifter.bas_hi = (unsigned char)((addr & 0xff0000) >> 16); |
2298 | shifter.bas_md = (unsigned char)((addr & 0x00ff00) >> 8); | |
2299 | shifter.bas_lo = (unsigned char)(addr & 0x0000ff); | |
1da177e4 LT |
2300 | } |
2301 | ||
a1005012 | 2302 | static int pan_display(struct fb_var_screeninfo *var, struct fb_info *info) |
1da177e4 | 2303 | { |
a1005012 MS |
2304 | struct atafb_par *par = (struct atafb_par *)info->par; |
2305 | ||
1da177e4 | 2306 | if (!fbhw->set_screen_base || |
a1005012 | 2307 | (!ATARIHW_PRESENT(EXTD_SHIFTER) && var->xoffset)) |
1da177e4 LT |
2308 | return -EINVAL; |
2309 | var->xoffset = up(var->xoffset, 16); | |
2310 | par->screen_base = screen_base + | |
a1005012 MS |
2311 | (var->yoffset * info->var.xres_virtual + var->xoffset) |
2312 | * info->var.bits_per_pixel / 8; | |
2313 | fbhw->set_screen_base(par->screen_base); | |
1da177e4 LT |
2314 | return 0; |
2315 | } | |
2316 | ||
1da177e4 LT |
2317 | /* ------------ Interfaces to hardware functions ------------ */ |
2318 | ||
1da177e4 LT |
2319 | #ifdef ATAFB_TT |
2320 | static struct fb_hwswitch tt_switch = { | |
a1005012 MS |
2321 | .detect = tt_detect, |
2322 | .encode_fix = tt_encode_fix, | |
2323 | .decode_var = tt_decode_var, | |
2324 | .encode_var = tt_encode_var, | |
2325 | .get_par = tt_get_par, | |
2326 | .set_par = tt_set_par, | |
2327 | .set_screen_base = set_screen_base, | |
2328 | .pan_display = pan_display, | |
1da177e4 LT |
2329 | }; |
2330 | #endif | |
2331 | ||
2332 | #ifdef ATAFB_FALCON | |
2333 | static struct fb_hwswitch falcon_switch = { | |
a1005012 MS |
2334 | .detect = falcon_detect, |
2335 | .encode_fix = falcon_encode_fix, | |
2336 | .decode_var = falcon_decode_var, | |
2337 | .encode_var = falcon_encode_var, | |
2338 | .get_par = falcon_get_par, | |
2339 | .set_par = falcon_set_par, | |
2340 | .set_screen_base = set_screen_base, | |
2341 | .blank = falcon_blank, | |
2342 | .pan_display = falcon_pan_display, | |
1da177e4 LT |
2343 | }; |
2344 | #endif | |
2345 | ||
2346 | #ifdef ATAFB_STE | |
2347 | static struct fb_hwswitch st_switch = { | |
a1005012 MS |
2348 | .detect = stste_detect, |
2349 | .encode_fix = stste_encode_fix, | |
2350 | .decode_var = stste_decode_var, | |
2351 | .encode_var = stste_encode_var, | |
2352 | .get_par = stste_get_par, | |
2353 | .set_par = stste_set_par, | |
2354 | .set_screen_base = stste_set_screen_base, | |
2355 | .pan_display = pan_display | |
1da177e4 LT |
2356 | }; |
2357 | #endif | |
2358 | ||
2359 | #ifdef ATAFB_EXT | |
2360 | static struct fb_hwswitch ext_switch = { | |
a1005012 MS |
2361 | .detect = ext_detect, |
2362 | .encode_fix = ext_encode_fix, | |
2363 | .decode_var = ext_decode_var, | |
2364 | .encode_var = ext_encode_var, | |
2365 | .get_par = ext_get_par, | |
2366 | .set_par = ext_set_par, | |
1da177e4 LT |
2367 | }; |
2368 | #endif | |
2369 | ||
a1005012 | 2370 | static void ata_get_par(struct atafb_par *par) |
1da177e4 | 2371 | { |
a1005012 MS |
2372 | if (current_par_valid) |
2373 | *par = current_par; | |
1da177e4 LT |
2374 | else |
2375 | fbhw->get_par(par); | |
2376 | } | |
2377 | ||
a1005012 | 2378 | static void ata_set_par(struct atafb_par *par) |
1da177e4 LT |
2379 | { |
2380 | fbhw->set_par(par); | |
a1005012 MS |
2381 | current_par = *par; |
2382 | current_par_valid = 1; | |
1da177e4 LT |
2383 | } |
2384 | ||
2385 | ||
1da177e4 LT |
2386 | /* =========================================================== */ |
2387 | /* ============== Hardware Independent Functions ============= */ | |
2388 | /* =========================================================== */ | |
2389 | ||
1da177e4 LT |
2390 | /* used for hardware scrolling */ |
2391 | ||
a1005012 | 2392 | static int do_fb_set_var(struct fb_var_screeninfo *var, int isactive) |
1da177e4 | 2393 | { |
a1005012 | 2394 | int err, activate; |
1da177e4 | 2395 | struct atafb_par par; |
a1005012 MS |
2396 | |
2397 | err = fbhw->decode_var(var, &par); | |
2398 | if (err) | |
1da177e4 | 2399 | return err; |
a1005012 | 2400 | activate = var->activate; |
1da177e4 | 2401 | if (((var->activate & FB_ACTIVATE_MASK) == FB_ACTIVATE_NOW) && isactive) |
a1005012 | 2402 | ata_set_par(&par); |
1da177e4 | 2403 | fbhw->encode_var(var, &par); |
a1005012 | 2404 | var->activate = activate; |
1da177e4 LT |
2405 | return 0; |
2406 | } | |
2407 | ||
a1005012 | 2408 | static int atafb_get_fix(struct fb_fix_screeninfo *fix, struct fb_info *info) |
1da177e4 LT |
2409 | { |
2410 | struct atafb_par par; | |
a1005012 MS |
2411 | int err; |
2412 | // Get fix directly (case con == -1 before)?? | |
2413 | err = fbhw->decode_var(&info->var, &par); | |
2414 | if (err) | |
2415 | return err; | |
1da177e4 LT |
2416 | memset(fix, 0, sizeof(struct fb_fix_screeninfo)); |
2417 | return fbhw->encode_fix(fix, &par); | |
2418 | } | |
a1005012 MS |
2419 | |
2420 | static int atafb_get_var(struct fb_var_screeninfo *var, struct fb_info *info) | |
1da177e4 LT |
2421 | { |
2422 | struct atafb_par par; | |
a1005012 MS |
2423 | |
2424 | ata_get_par(&par); | |
2425 | fbhw->encode_var(var, &par); | |
2426 | ||
1da177e4 LT |
2427 | return 0; |
2428 | } | |
2429 | ||
a1005012 MS |
2430 | // No longer called by fbcon! |
2431 | // Still called by set_var internally | |
2432 | ||
2433 | static void atafb_set_disp(struct fb_info *info) | |
1da177e4 | 2434 | { |
a1005012 MS |
2435 | atafb_get_var(&info->var, info); |
2436 | atafb_get_fix(&info->fix, info); | |
1da177e4 | 2437 | |
a1005012 | 2438 | info->screen_base = (void *)info->fix.smem_start; |
1da177e4 LT |
2439 | } |
2440 | ||
a1005012 MS |
2441 | static int atafb_setcolreg(u_int regno, u_int red, u_int green, u_int blue, |
2442 | u_int transp, struct fb_info *info) | |
2443 | { | |
2444 | red >>= 8; | |
2445 | green >>= 8; | |
2446 | blue >>= 8; | |
2447 | ||
2448 | return info->fbops->fb_setcolreg(regno, red, green, blue, transp, info); | |
2449 | } | |
2450 | ||
1da177e4 | 2451 | static int |
a1005012 | 2452 | atafb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info) |
1da177e4 | 2453 | { |
a1005012 MS |
2454 | int xoffset = var->xoffset; |
2455 | int yoffset = var->yoffset; | |
2456 | int err; | |
2457 | ||
2458 | if (var->vmode & FB_VMODE_YWRAP) { | |
2459 | if (yoffset < 0 || yoffset >= info->var.yres_virtual || xoffset) | |
2460 | return -EINVAL; | |
2461 | } else { | |
2462 | if (xoffset + info->var.xres > info->var.xres_virtual || | |
2463 | yoffset + info->var.yres > info->var.yres_virtual) | |
2464 | return -EINVAL; | |
1da177e4 | 2465 | } |
a1005012 MS |
2466 | |
2467 | if (fbhw->pan_display) { | |
2468 | err = fbhw->pan_display(var, info); | |
2469 | if (err) | |
2470 | return err; | |
2471 | } else | |
2472 | return -EINVAL; | |
2473 | ||
2474 | info->var.xoffset = xoffset; | |
2475 | info->var.yoffset = yoffset; | |
2476 | ||
2477 | if (var->vmode & FB_VMODE_YWRAP) | |
2478 | info->var.vmode |= FB_VMODE_YWRAP; | |
2479 | else | |
2480 | info->var.vmode &= ~FB_VMODE_YWRAP; | |
2481 | ||
1da177e4 LT |
2482 | return 0; |
2483 | } | |
2484 | ||
a1005012 MS |
2485 | /* |
2486 | * generic drawing routines; imageblit needs updating for image depth > 1 | |
2487 | */ | |
2488 | ||
2489 | #if BITS_PER_LONG == 32 | |
2490 | #define BYTES_PER_LONG 4 | |
2491 | #define SHIFT_PER_LONG 5 | |
2492 | #elif BITS_PER_LONG == 64 | |
2493 | #define BYTES_PER_LONG 8 | |
2494 | #define SHIFT_PER_LONG 6 | |
2495 | #else | |
2496 | #define Please update me | |
2497 | #endif | |
1da177e4 LT |
2498 | |
2499 | ||
a1005012 | 2500 | static void atafb_fillrect(struct fb_info *info, const struct fb_fillrect *rect) |
1da177e4 | 2501 | { |
a1005012 MS |
2502 | struct atafb_par *par = (struct atafb_par *)info->par; |
2503 | int x2, y2; | |
2504 | u32 width, height; | |
2505 | ||
2506 | if (!rect->width || !rect->height) | |
2507 | return; | |
2508 | ||
74511413 GU |
2509 | #ifdef ATAFB_FALCON |
2510 | if (info->var.bits_per_pixel == 16) { | |
2511 | cfb_fillrect(info, rect); | |
2512 | return; | |
2513 | } | |
2514 | #endif | |
2515 | ||
a1005012 MS |
2516 | /* |
2517 | * We could use hardware clipping but on many cards you get around | |
2518 | * hardware clipping by writing to framebuffer directly. | |
2519 | * */ | |
2520 | x2 = rect->dx + rect->width; | |
2521 | y2 = rect->dy + rect->height; | |
2522 | x2 = x2 < info->var.xres_virtual ? x2 : info->var.xres_virtual; | |
2523 | y2 = y2 < info->var.yres_virtual ? y2 : info->var.yres_virtual; | |
2524 | width = x2 - rect->dx; | |
2525 | height = y2 - rect->dy; | |
2526 | ||
2527 | if (info->var.bits_per_pixel == 1) | |
2528 | atafb_mfb_fillrect(info, par->next_line, rect->color, | |
2529 | rect->dy, rect->dx, height, width); | |
2530 | else if (info->var.bits_per_pixel == 2) | |
2531 | atafb_iplan2p2_fillrect(info, par->next_line, rect->color, | |
2532 | rect->dy, rect->dx, height, width); | |
2533 | else if (info->var.bits_per_pixel == 4) | |
2534 | atafb_iplan2p4_fillrect(info, par->next_line, rect->color, | |
2535 | rect->dy, rect->dx, height, width); | |
1da177e4 | 2536 | else |
a1005012 MS |
2537 | atafb_iplan2p8_fillrect(info, par->next_line, rect->color, |
2538 | rect->dy, rect->dx, height, width); | |
2539 | ||
2540 | return; | |
1da177e4 LT |
2541 | } |
2542 | ||
a1005012 | 2543 | static void atafb_copyarea(struct fb_info *info, const struct fb_copyarea *area) |
1da177e4 | 2544 | { |
a1005012 MS |
2545 | struct atafb_par *par = (struct atafb_par *)info->par; |
2546 | int x2, y2; | |
2547 | u32 dx, dy, sx, sy, width, height; | |
2548 | int rev_copy = 0; | |
2549 | ||
74511413 GU |
2550 | #ifdef ATAFB_FALCON |
2551 | if (info->var.bits_per_pixel == 16) { | |
2552 | cfb_copyarea(info, area); | |
2553 | return; | |
2554 | } | |
2555 | #endif | |
2556 | ||
a1005012 MS |
2557 | /* clip the destination */ |
2558 | x2 = area->dx + area->width; | |
2559 | y2 = area->dy + area->height; | |
2560 | dx = area->dx > 0 ? area->dx : 0; | |
2561 | dy = area->dy > 0 ? area->dy : 0; | |
2562 | x2 = x2 < info->var.xres_virtual ? x2 : info->var.xres_virtual; | |
2563 | y2 = y2 < info->var.yres_virtual ? y2 : info->var.yres_virtual; | |
2564 | width = x2 - dx; | |
2565 | height = y2 - dy; | |
2566 | ||
1c0face9 RK |
2567 | if (area->sx + dx < area->dx || area->sy + dy < area->dy) |
2568 | return; | |
2569 | ||
a1005012 MS |
2570 | /* update sx,sy */ |
2571 | sx = area->sx + (dx - area->dx); | |
2572 | sy = area->sy + (dy - area->dy); | |
2573 | ||
2574 | /* the source must be completely inside the virtual screen */ | |
1c0face9 RK |
2575 | if (sx + width > info->var.xres_virtual || |
2576 | sy + height > info->var.yres_virtual) | |
a1005012 | 2577 | return; |
1da177e4 | 2578 | |
a1005012 MS |
2579 | if (dy > sy || (dy == sy && dx > sx)) { |
2580 | dy += height; | |
2581 | sy += height; | |
2582 | rev_copy = 1; | |
2583 | } | |
1da177e4 | 2584 | |
a1005012 MS |
2585 | if (info->var.bits_per_pixel == 1) |
2586 | atafb_mfb_copyarea(info, par->next_line, sy, sx, dy, dx, height, width); | |
2587 | else if (info->var.bits_per_pixel == 2) | |
2588 | atafb_iplan2p2_copyarea(info, par->next_line, sy, sx, dy, dx, height, width); | |
2589 | else if (info->var.bits_per_pixel == 4) | |
2590 | atafb_iplan2p4_copyarea(info, par->next_line, sy, sx, dy, dx, height, width); | |
2591 | else | |
2592 | atafb_iplan2p8_copyarea(info, par->next_line, sy, sx, dy, dx, height, width); | |
2593 | ||
2594 | return; | |
2595 | } | |
2596 | ||
2597 | static void atafb_imageblit(struct fb_info *info, const struct fb_image *image) | |
2598 | { | |
2599 | struct atafb_par *par = (struct atafb_par *)info->par; | |
2600 | int x2, y2; | |
2601 | unsigned long *dst; | |
2602 | int dst_idx; | |
2603 | const char *src; | |
2604 | u32 dx, dy, width, height, pitch; | |
2605 | ||
74511413 GU |
2606 | #ifdef ATAFB_FALCON |
2607 | if (info->var.bits_per_pixel == 16) { | |
2608 | cfb_imageblit(info, image); | |
2609 | return; | |
2610 | } | |
2611 | #endif | |
2612 | ||
a1005012 MS |
2613 | /* |
2614 | * We could use hardware clipping but on many cards you get around | |
2615 | * hardware clipping by writing to framebuffer directly like we are | |
2616 | * doing here. | |
2617 | */ | |
2618 | x2 = image->dx + image->width; | |
2619 | y2 = image->dy + image->height; | |
2620 | dx = image->dx; | |
2621 | dy = image->dy; | |
2622 | x2 = x2 < info->var.xres_virtual ? x2 : info->var.xres_virtual; | |
2623 | y2 = y2 < info->var.yres_virtual ? y2 : info->var.yres_virtual; | |
2624 | width = x2 - dx; | |
2625 | height = y2 - dy; | |
2626 | ||
2627 | if (image->depth == 1) { | |
2628 | // used for font data | |
2629 | dst = (unsigned long *) | |
2630 | ((unsigned long)info->screen_base & ~(BYTES_PER_LONG - 1)); | |
2631 | dst_idx = ((unsigned long)info->screen_base & (BYTES_PER_LONG - 1)) * 8; | |
2632 | dst_idx += dy * par->next_line * 8 + dx; | |
2633 | src = image->data; | |
2634 | pitch = (image->width + 7) / 8; | |
2635 | while (height--) { | |
2636 | ||
2637 | if (info->var.bits_per_pixel == 1) | |
2638 | atafb_mfb_linefill(info, par->next_line, | |
2639 | dy, dx, width, src, | |
2640 | image->bg_color, image->fg_color); | |
2641 | else if (info->var.bits_per_pixel == 2) | |
2642 | atafb_iplan2p2_linefill(info, par->next_line, | |
2643 | dy, dx, width, src, | |
2644 | image->bg_color, image->fg_color); | |
2645 | else if (info->var.bits_per_pixel == 4) | |
2646 | atafb_iplan2p4_linefill(info, par->next_line, | |
2647 | dy, dx, width, src, | |
2648 | image->bg_color, image->fg_color); | |
2649 | else | |
2650 | atafb_iplan2p8_linefill(info, par->next_line, | |
2651 | dy, dx, width, src, | |
2652 | image->bg_color, image->fg_color); | |
2653 | dy++; | |
2654 | src += pitch; | |
1da177e4 | 2655 | } |
a1005012 | 2656 | } else { |
96f47d61 GU |
2657 | c2p_iplan2(info->screen_base, image->data, dx, dy, width, |
2658 | height, par->next_line, image->width, | |
2659 | info->var.bits_per_pixel); | |
1da177e4 | 2660 | } |
1da177e4 LT |
2661 | } |
2662 | ||
2663 | static int | |
67a6680d | 2664 | atafb_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg) |
1da177e4 LT |
2665 | { |
2666 | switch (cmd) { | |
2667 | #ifdef FBCMD_GET_CURRENTPAR | |
2668 | case FBCMD_GET_CURRENTPAR: | |
2669 | if (copy_to_user((void *)arg, (void *)¤t_par, | |
2670 | sizeof(struct atafb_par))) | |
2671 | return -EFAULT; | |
2672 | return 0; | |
2673 | #endif | |
2674 | #ifdef FBCMD_SET_CURRENTPAR | |
2675 | case FBCMD_SET_CURRENTPAR: | |
2676 | if (copy_from_user((void *)¤t_par, (void *)arg, | |
2677 | sizeof(struct atafb_par))) | |
2678 | return -EFAULT; | |
a1005012 | 2679 | ata_set_par(¤t_par); |
1da177e4 LT |
2680 | return 0; |
2681 | #endif | |
2682 | } | |
2683 | return -EINVAL; | |
2684 | } | |
2685 | ||
2686 | /* (un)blank/poweroff | |
2687 | * 0 = unblank | |
2688 | * 1 = blank | |
2689 | * 2 = suspend vsync | |
2690 | * 3 = suspend hsync | |
2691 | * 4 = off | |
2692 | */ | |
a1005012 | 2693 | static int atafb_blank(int blank, struct fb_info *info) |
1da177e4 LT |
2694 | { |
2695 | unsigned short black[16]; | |
2696 | struct fb_cmap cmap; | |
2697 | if (fbhw->blank && !fbhw->blank(blank)) | |
2698 | return 1; | |
2699 | if (blank) { | |
a1005012 MS |
2700 | memset(black, 0, 16 * sizeof(unsigned short)); |
2701 | cmap.red = black; | |
2702 | cmap.green = black; | |
2703 | cmap.blue = black; | |
2704 | cmap.transp = NULL; | |
2705 | cmap.start = 0; | |
2706 | cmap.len = 16; | |
2707 | fb_set_cmap(&cmap, info); | |
1da177e4 | 2708 | } |
a1005012 | 2709 | #if 0 |
1da177e4 | 2710 | else |
a1005012 MS |
2711 | do_install_cmap(info); |
2712 | #endif | |
2713 | return 0; | |
2714 | } | |
2715 | ||
2716 | /* | |
2717 | * New fbcon interface ... | |
2718 | */ | |
2719 | ||
2720 | /* check var by decoding var into hw par, rounding if necessary, | |
2721 | * then encoding hw par back into new, validated var */ | |
2722 | static int atafb_check_var(struct fb_var_screeninfo *var, struct fb_info *info) | |
2723 | { | |
2724 | int err; | |
2725 | struct atafb_par par; | |
2726 | ||
2727 | /* Validate wanted screen parameters */ | |
2728 | // if ((err = ata_decode_var(var, &par))) | |
2729 | err = fbhw->decode_var(var, &par); | |
2730 | if (err) | |
2731 | return err; | |
2732 | ||
2733 | /* Encode (possibly rounded) screen parameters */ | |
2734 | fbhw->encode_var(var, &par); | |
1da177e4 LT |
2735 | return 0; |
2736 | } | |
2737 | ||
a1005012 MS |
2738 | /* actually set hw par by decoding var, then setting hardware from |
2739 | * hw par just decoded */ | |
2740 | static int atafb_set_par(struct fb_info *info) | |
2741 | { | |
2742 | struct atafb_par *par = (struct atafb_par *)info->par; | |
2743 | ||
2744 | /* Decode wanted screen parameters */ | |
2745 | fbhw->decode_var(&info->var, par); | |
2746 | fbhw->encode_fix(&info->fix, par); | |
2747 | ||
2748 | /* Set new videomode */ | |
2749 | ata_set_par(par); | |
2750 | ||
2751 | return 0; | |
2752 | } | |
2753 | ||
2754 | ||
1da177e4 LT |
2755 | static struct fb_ops atafb_ops = { |
2756 | .owner = THIS_MODULE, | |
a1005012 MS |
2757 | .fb_check_var = atafb_check_var, |
2758 | .fb_set_par = atafb_set_par, | |
2759 | .fb_setcolreg = atafb_setcolreg, | |
1da177e4 | 2760 | .fb_blank = atafb_blank, |
a1005012 MS |
2761 | .fb_pan_display = atafb_pan_display, |
2762 | .fb_fillrect = atafb_fillrect, | |
2763 | .fb_copyarea = atafb_copyarea, | |
2764 | .fb_imageblit = atafb_imageblit, | |
1da177e4 LT |
2765 | .fb_ioctl = atafb_ioctl, |
2766 | }; | |
2767 | ||
a1005012 | 2768 | static void check_default_par(int detected_mode) |
1da177e4 LT |
2769 | { |
2770 | char default_name[10]; | |
2771 | int i; | |
2772 | struct fb_var_screeninfo var; | |
2773 | unsigned long min_mem; | |
2774 | ||
2775 | /* First try the user supplied mode */ | |
2776 | if (default_par) { | |
a1005012 | 2777 | var = atafb_predefined[default_par - 1]; |
1da177e4 | 2778 | var.activate = FB_ACTIVATE_TEST; |
a1005012 MS |
2779 | if (do_fb_set_var(&var, 1)) |
2780 | default_par = 0; /* failed */ | |
1da177e4 LT |
2781 | } |
2782 | /* Next is the autodetected one */ | |
a1005012 MS |
2783 | if (!default_par) { |
2784 | var = atafb_predefined[detected_mode - 1]; /* autodetect */ | |
1da177e4 | 2785 | var.activate = FB_ACTIVATE_TEST; |
a1005012 MS |
2786 | if (!do_fb_set_var(&var, 1)) |
2787 | default_par = detected_mode; | |
1da177e4 LT |
2788 | } |
2789 | /* If that also failed, try some default modes... */ | |
a1005012 | 2790 | if (!default_par) { |
1da177e4 | 2791 | /* try default1, default2... */ |
a1005012 MS |
2792 | for (i = 1; i < 10; i++) { |
2793 | sprintf(default_name,"default%d", i); | |
2794 | default_par = get_video_mode(default_name); | |
2795 | if (!default_par) | |
1da177e4 | 2796 | panic("can't set default video mode"); |
a1005012 | 2797 | var = atafb_predefined[default_par - 1]; |
1da177e4 | 2798 | var.activate = FB_ACTIVATE_TEST; |
a1005012 | 2799 | if (!do_fb_set_var(&var,1)) |
1da177e4 LT |
2800 | break; /* ok */ |
2801 | } | |
2802 | } | |
a1005012 | 2803 | min_mem = var.xres_virtual * var.yres_virtual * var.bits_per_pixel / 8; |
1da177e4 | 2804 | if (default_mem_req < min_mem) |
a1005012 | 2805 | default_mem_req = min_mem; |
1da177e4 LT |
2806 | } |
2807 | ||
1da177e4 LT |
2808 | #ifdef ATAFB_EXT |
2809 | static void __init atafb_setup_ext(char *spec) | |
2810 | { | |
a1005012 | 2811 | int xres, xres_virtual, yres, depth, planes; |
1da177e4 LT |
2812 | unsigned long addr, len; |
2813 | char *p; | |
2814 | ||
2815 | /* Format is: <xres>;<yres>;<depth>;<plane organ.>; | |
2816 | * <screen mem addr> | |
2817 | * [;<screen mem length>[;<vgaiobase>[;<bits-per-col>[;<colorreg-type> | |
2818 | * [;<xres-virtual>]]]]] | |
2819 | * | |
2820 | * 09/23/97 Juergen | |
2821 | * <xres_virtual>: hardware's x-resolution (f.e. ProMST) | |
2822 | * | |
2823 | * Even xres_virtual is available, we neither support panning nor hw-scrolling! | |
2824 | */ | |
a1005012 MS |
2825 | p = strsep(&spec, ";"); |
2826 | if (!p || !*p) | |
2827 | return; | |
1da177e4 LT |
2828 | xres_virtual = xres = simple_strtoul(p, NULL, 10); |
2829 | if (xres <= 0) | |
a1005012 | 2830 | return; |
1da177e4 | 2831 | |
a1005012 MS |
2832 | p = strsep(&spec, ";"); |
2833 | if (!p || !*p) | |
2834 | return; | |
1da177e4 LT |
2835 | yres = simple_strtoul(p, NULL, 10); |
2836 | if (yres <= 0) | |
a1005012 | 2837 | return; |
1da177e4 | 2838 | |
a1005012 MS |
2839 | p = strsep(&spec, ";"); |
2840 | if (!p || !*p) | |
2841 | return; | |
1da177e4 LT |
2842 | depth = simple_strtoul(p, NULL, 10); |
2843 | if (depth != 1 && depth != 2 && depth != 4 && depth != 8 && | |
a1005012 MS |
2844 | depth != 16 && depth != 24) |
2845 | return; | |
1da177e4 | 2846 | |
a1005012 MS |
2847 | p = strsep(&spec, ";"); |
2848 | if (!p || !*p) | |
2849 | return; | |
1da177e4 LT |
2850 | if (*p == 'i') |
2851 | planes = FB_TYPE_INTERLEAVED_PLANES; | |
2852 | else if (*p == 'p') | |
2853 | planes = FB_TYPE_PACKED_PIXELS; | |
2854 | else if (*p == 'n') | |
2855 | planes = FB_TYPE_PLANES; | |
2856 | else if (*p == 't') | |
a1005012 | 2857 | planes = -1; /* true color */ |
1da177e4 LT |
2858 | else |
2859 | return; | |
2860 | ||
a1005012 MS |
2861 | p = strsep(&spec, ";"); |
2862 | if (!p || !*p) | |
1da177e4 LT |
2863 | return; |
2864 | addr = simple_strtoul(p, NULL, 0); | |
2865 | ||
a1005012 MS |
2866 | p = strsep(&spec, ";"); |
2867 | if (!p || !*p) | |
2868 | len = xres * yres * depth / 8; | |
1da177e4 LT |
2869 | else |
2870 | len = simple_strtoul(p, NULL, 0); | |
2871 | ||
a1005012 MS |
2872 | p = strsep(&spec, ";"); |
2873 | if (p && *p) | |
2874 | external_vgaiobase = simple_strtoul(p, NULL, 0); | |
1da177e4 | 2875 | |
a1005012 MS |
2876 | p = strsep(&spec, ";"); |
2877 | if (p && *p) { | |
1da177e4 LT |
2878 | external_bitspercol = simple_strtoul(p, NULL, 0); |
2879 | if (external_bitspercol > 8) | |
2880 | external_bitspercol = 8; | |
2881 | else if (external_bitspercol < 1) | |
2882 | external_bitspercol = 1; | |
2883 | } | |
2884 | ||
a1005012 MS |
2885 | p = strsep(&spec, ";"); |
2886 | if (p && *p) { | |
1da177e4 LT |
2887 | if (!strcmp(p, "vga")) |
2888 | external_card_type = IS_VGA; | |
2889 | if (!strcmp(p, "mv300")) | |
2890 | external_card_type = IS_MV300; | |
2891 | } | |
2892 | ||
a1005012 MS |
2893 | p = strsep(&spec, ";"); |
2894 | if (p && *p) { | |
1da177e4 LT |
2895 | xres_virtual = simple_strtoul(p, NULL, 10); |
2896 | if (xres_virtual < xres) | |
2897 | xres_virtual = xres; | |
a1005012 MS |
2898 | if (xres_virtual * yres * depth / 8 > len) |
2899 | len = xres_virtual * yres * depth / 8; | |
1da177e4 LT |
2900 | } |
2901 | ||
a1005012 MS |
2902 | external_xres = xres; |
2903 | external_xres_virtual = xres_virtual; | |
2904 | external_yres = yres; | |
1da177e4 LT |
2905 | external_depth = depth; |
2906 | external_pmode = planes; | |
a1005012 MS |
2907 | external_addr = (void *)addr; |
2908 | external_len = len; | |
2909 | ||
2910 | if (external_card_type == IS_MV300) { | |
2911 | switch (external_depth) { | |
2912 | case 1: | |
2913 | MV300_reg = MV300_reg_1bit; | |
2914 | break; | |
2915 | case 4: | |
2916 | MV300_reg = MV300_reg_4bit; | |
2917 | break; | |
2918 | case 8: | |
2919 | MV300_reg = MV300_reg_8bit; | |
2920 | break; | |
2921 | } | |
2922 | } | |
1da177e4 LT |
2923 | } |
2924 | #endif /* ATAFB_EXT */ | |
2925 | ||
1da177e4 LT |
2926 | static void __init atafb_setup_int(char *spec) |
2927 | { | |
2928 | /* Format to config extended internal video hardware like OverScan: | |
a1005012 MS |
2929 | * "internal:<xres>;<yres>;<xres_max>;<yres_max>;<offset>" |
2930 | * Explanation: | |
2931 | * <xres>: x-resolution | |
2932 | * <yres>: y-resolution | |
2933 | * The following are only needed if you have an overscan which | |
2934 | * needs a black border: | |
2935 | * <xres_max>: max. length of a line in pixels your OverScan hardware would allow | |
2936 | * <yres_max>: max. number of lines your OverScan hardware would allow | |
2937 | * <offset>: Offset from physical beginning to visible beginning | |
2938 | * of screen in bytes | |
2939 | */ | |
1da177e4 LT |
2940 | int xres; |
2941 | char *p; | |
2942 | ||
2943 | if (!(p = strsep(&spec, ";")) || !*p) | |
2944 | return; | |
2945 | xres = simple_strtoul(p, NULL, 10); | |
2946 | if (!(p = strsep(&spec, ";")) || !*p) | |
2947 | return; | |
a1005012 MS |
2948 | sttt_xres = xres; |
2949 | tt_yres = st_yres = simple_strtoul(p, NULL, 10); | |
2950 | if ((p = strsep(&spec, ";")) && *p) | |
2951 | sttt_xres_virtual = simple_strtoul(p, NULL, 10); | |
2952 | if ((p = strsep(&spec, ";")) && *p) | |
2953 | sttt_yres_virtual = simple_strtoul(p, NULL, 0); | |
2954 | if ((p = strsep(&spec, ";")) && *p) | |
2955 | ovsc_offset = simple_strtoul(p, NULL, 0); | |
1da177e4 LT |
2956 | |
2957 | if (ovsc_offset || (sttt_yres_virtual != st_yres)) | |
a1005012 | 2958 | use_hwscroll = 0; |
1da177e4 LT |
2959 | } |
2960 | ||
1da177e4 LT |
2961 | #ifdef ATAFB_FALCON |
2962 | static void __init atafb_setup_mcap(char *spec) | |
2963 | { | |
2964 | char *p; | |
2965 | int vmin, vmax, hmin, hmax; | |
2966 | ||
2967 | /* Format for monitor capabilities is: <Vmin>;<Vmax>;<Hmin>;<Hmax> | |
2968 | * <V*> vertical freq. in Hz | |
2969 | * <H*> horizontal freq. in kHz | |
2970 | */ | |
2971 | if (!(p = strsep(&spec, ";")) || !*p) | |
2972 | return; | |
2973 | vmin = simple_strtoul(p, NULL, 10); | |
2974 | if (vmin <= 0) | |
2975 | return; | |
2976 | if (!(p = strsep(&spec, ";")) || !*p) | |
2977 | return; | |
2978 | vmax = simple_strtoul(p, NULL, 10); | |
2979 | if (vmax <= 0 || vmax <= vmin) | |
2980 | return; | |
2981 | if (!(p = strsep(&spec, ";")) || !*p) | |
2982 | return; | |
2983 | hmin = 1000 * simple_strtoul(p, NULL, 10); | |
2984 | if (hmin <= 0) | |
2985 | return; | |
2986 | if (!(p = strsep(&spec, "")) || !*p) | |
2987 | return; | |
2988 | hmax = 1000 * simple_strtoul(p, NULL, 10); | |
2989 | if (hmax <= 0 || hmax <= hmin) | |
2990 | return; | |
2991 | ||
2992 | fb_info.monspecs.vfmin = vmin; | |
2993 | fb_info.monspecs.vfmax = vmax; | |
2994 | fb_info.monspecs.hfmin = hmin; | |
2995 | fb_info.monspecs.hfmax = hmax; | |
2996 | } | |
2997 | #endif /* ATAFB_FALCON */ | |
2998 | ||
1da177e4 LT |
2999 | static void __init atafb_setup_user(char *spec) |
3000 | { | |
3001 | /* Format of user defined video mode is: <xres>;<yres>;<depth> | |
3002 | */ | |
3003 | char *p; | |
3004 | int xres, yres, depth, temp; | |
3005 | ||
a1005012 MS |
3006 | p = strsep(&spec, ";"); |
3007 | if (!p || !*p) | |
1da177e4 LT |
3008 | return; |
3009 | xres = simple_strtoul(p, NULL, 10); | |
a1005012 MS |
3010 | p = strsep(&spec, ";"); |
3011 | if (!p || !*p) | |
1da177e4 LT |
3012 | return; |
3013 | yres = simple_strtoul(p, NULL, 10); | |
a1005012 MS |
3014 | p = strsep(&spec, ""); |
3015 | if (!p || !*p) | |
1da177e4 LT |
3016 | return; |
3017 | depth = simple_strtoul(p, NULL, 10); | |
a1005012 MS |
3018 | temp = get_video_mode("user0"); |
3019 | if (temp) { | |
3020 | default_par = temp; | |
3021 | atafb_predefined[default_par - 1].xres = xres; | |
3022 | atafb_predefined[default_par - 1].yres = yres; | |
3023 | atafb_predefined[default_par - 1].bits_per_pixel = depth; | |
1da177e4 LT |
3024 | } |
3025 | } | |
3026 | ||
a1005012 | 3027 | int __init atafb_setup(char *options) |
1da177e4 | 3028 | { |
a1005012 MS |
3029 | char *this_opt; |
3030 | int temp; | |
1da177e4 | 3031 | |
a1005012 | 3032 | if (!options || !*options) |
1da177e4 | 3033 | return 0; |
a1005012 MS |
3034 | |
3035 | while ((this_opt = strsep(&options, ",")) != NULL) { | |
3036 | if (!*this_opt) | |
3037 | continue; | |
3038 | if ((temp = get_video_mode(this_opt))) { | |
3039 | default_par = temp; | |
3040 | mode_option = this_opt; | |
3041 | } else if (!strcmp(this_opt, "inverse")) | |
3042 | inverse = 1; | |
3043 | else if (!strncmp(this_opt, "hwscroll_", 9)) { | |
3044 | hwscroll = simple_strtoul(this_opt + 9, NULL, 10); | |
3045 | if (hwscroll < 0) | |
3046 | hwscroll = 0; | |
3047 | if (hwscroll > 200) | |
3048 | hwscroll = 200; | |
3049 | } | |
1da177e4 | 3050 | #ifdef ATAFB_EXT |
a1005012 MS |
3051 | else if (!strcmp(this_opt, "mv300")) { |
3052 | external_bitspercol = 8; | |
3053 | external_card_type = IS_MV300; | |
3054 | } else if (!strncmp(this_opt, "external:", 9)) | |
3055 | atafb_setup_ext(this_opt + 9); | |
3056 | #endif | |
3057 | else if (!strncmp(this_opt, "internal:", 9)) | |
3058 | atafb_setup_int(this_opt + 9); | |
3059 | #ifdef ATAFB_FALCON | |
3060 | else if (!strncmp(this_opt, "eclock:", 7)) { | |
3061 | fext.f = simple_strtoul(this_opt + 7, NULL, 10); | |
3062 | /* external pixelclock in kHz --> ps */ | |
3063 | fext.t = 1000000000 / fext.f; | |
3064 | fext.f *= 1000; | |
3065 | } else if (!strncmp(this_opt, "monitorcap:", 11)) | |
3066 | atafb_setup_mcap(this_opt + 11); | |
3067 | #endif | |
3068 | else if (!strcmp(this_opt, "keep")) | |
3069 | DontCalcRes = 1; | |
3070 | else if (!strncmp(this_opt, "R", 1)) | |
3071 | atafb_setup_user(this_opt + 1); | |
1da177e4 | 3072 | } |
a1005012 MS |
3073 | return 0; |
3074 | } | |
3075 | ||
3076 | int __init atafb_init(void) | |
3077 | { | |
639274d8 | 3078 | int pad, detected_mode, error; |
a1005012 MS |
3079 | unsigned int defmode = 0; |
3080 | unsigned long mem_req; | |
3081 | ||
3082 | #ifndef MODULE | |
3083 | char *option = NULL; | |
3084 | ||
3085 | if (fb_get_options("atafb", &option)) | |
3086 | return -ENODEV; | |
3087 | atafb_setup(option); | |
3088 | #endif | |
3089 | printk("atafb_init: start\n"); | |
3090 | ||
3091 | if (!MACH_IS_ATARI) | |
e945b568 | 3092 | return -ENODEV; |
a1005012 MS |
3093 | |
3094 | do { | |
3095 | #ifdef ATAFB_EXT | |
3096 | if (external_addr) { | |
3097 | printk("atafb_init: initializing external hw\n"); | |
3098 | fbhw = &ext_switch; | |
3099 | atafb_ops.fb_setcolreg = &ext_setcolreg; | |
3100 | defmode = DEFMODE_EXT; | |
3101 | break; | |
3102 | } | |
3103 | #endif | |
3104 | #ifdef ATAFB_TT | |
3105 | if (ATARIHW_PRESENT(TT_SHIFTER)) { | |
3106 | printk("atafb_init: initializing TT hw\n"); | |
3107 | fbhw = &tt_switch; | |
3108 | atafb_ops.fb_setcolreg = &tt_setcolreg; | |
3109 | defmode = DEFMODE_TT; | |
3110 | break; | |
3111 | } | |
1da177e4 | 3112 | #endif |
1da177e4 | 3113 | #ifdef ATAFB_FALCON |
a1005012 MS |
3114 | if (ATARIHW_PRESENT(VIDEL_SHIFTER)) { |
3115 | printk("atafb_init: initializing Falcon hw\n"); | |
3116 | fbhw = &falcon_switch; | |
3117 | atafb_ops.fb_setcolreg = &falcon_setcolreg; | |
639274d8 GU |
3118 | error = request_irq(IRQ_AUTO_4, falcon_vbl_switcher, |
3119 | IRQ_TYPE_PRIO, | |
3120 | "framebuffer/modeswitch", | |
3121 | falcon_vbl_switcher); | |
3122 | if (error) | |
3123 | return error; | |
a1005012 MS |
3124 | defmode = DEFMODE_F30; |
3125 | break; | |
3126 | } | |
3127 | #endif | |
3128 | #ifdef ATAFB_STE | |
3129 | if (ATARIHW_PRESENT(STND_SHIFTER) || | |
3130 | ATARIHW_PRESENT(EXTD_SHIFTER)) { | |
3131 | printk("atafb_init: initializing ST/E hw\n"); | |
3132 | fbhw = &st_switch; | |
3133 | atafb_ops.fb_setcolreg = &stste_setcolreg; | |
3134 | defmode = DEFMODE_STE; | |
3135 | break; | |
3136 | } | |
3137 | fbhw = &st_switch; | |
3138 | atafb_ops.fb_setcolreg = &stste_setcolreg; | |
3139 | printk("Cannot determine video hardware; defaulting to ST(e)\n"); | |
3140 | #else /* ATAFB_STE */ | |
3141 | /* no default driver included */ | |
3142 | /* Nobody will ever see this message :-) */ | |
3143 | panic("Cannot initialize video hardware"); | |
3144 | #endif | |
3145 | } while (0); | |
3146 | ||
3147 | /* Multisync monitor capabilities */ | |
3148 | /* Atari-TOS defaults if no boot option present */ | |
3149 | if (fb_info.monspecs.hfmin == 0) { | |
3150 | fb_info.monspecs.hfmin = 31000; | |
3151 | fb_info.monspecs.hfmax = 32000; | |
3152 | fb_info.monspecs.vfmin = 58; | |
3153 | fb_info.monspecs.vfmax = 62; | |
1da177e4 | 3154 | } |
a1005012 MS |
3155 | |
3156 | detected_mode = fbhw->detect(); | |
3157 | check_default_par(detected_mode); | |
3158 | #ifdef ATAFB_EXT | |
3159 | if (!external_addr) { | |
3160 | #endif /* ATAFB_EXT */ | |
3161 | mem_req = default_mem_req + ovsc_offset + ovsc_addlen; | |
3162 | mem_req = PAGE_ALIGN(mem_req) + PAGE_SIZE; | |
3163 | screen_base = atari_stram_alloc(mem_req, "atafb"); | |
3164 | if (!screen_base) | |
3165 | panic("Cannot allocate screen memory"); | |
3166 | memset(screen_base, 0, mem_req); | |
3167 | pad = -(unsigned long)screen_base & (PAGE_SIZE - 1); | |
3168 | screen_base += pad; | |
3169 | real_screen_base = screen_base + ovsc_offset; | |
3170 | screen_len = (mem_req - pad - ovsc_offset) & PAGE_MASK; | |
3171 | st_ovsc_switch(); | |
3172 | if (CPU_IS_040_OR_060) { | |
3173 | /* On a '040+, the cache mode of video RAM must be set to | |
3174 | * write-through also for internal video hardware! */ | |
3175 | cache_push(virt_to_phys(screen_base), screen_len); | |
3176 | kernel_set_cachemode(screen_base, screen_len, | |
3177 | IOMAP_WRITETHROUGH); | |
3178 | } | |
3179 | printk("atafb: screen_base %p real_screen_base %p screen_len %d\n", | |
3180 | screen_base, real_screen_base, screen_len); | |
3181 | #ifdef ATAFB_EXT | |
3182 | } else { | |
3183 | /* Map the video memory (physical address given) to somewhere | |
3184 | * in the kernel address space. | |
3185 | */ | |
3186 | external_addr = ioremap_writethrough((unsigned long)external_addr, | |
3187 | external_len); | |
3188 | if (external_vgaiobase) | |
3189 | external_vgaiobase = | |
3190 | (unsigned long)ioremap(external_vgaiobase, 0x10000); | |
3191 | screen_base = | |
3192 | real_screen_base = external_addr; | |
3193 | screen_len = external_len & PAGE_MASK; | |
3194 | memset (screen_base, 0, external_len); | |
3195 | } | |
3196 | #endif /* ATAFB_EXT */ | |
3197 | ||
3198 | // strcpy(fb_info.mode->name, "Atari Builtin "); | |
3199 | fb_info.fbops = &atafb_ops; | |
3200 | // try to set default (detected; requested) var | |
3201 | do_fb_set_var(&atafb_predefined[default_par - 1], 1); | |
3202 | // reads hw state into current par, which may not be sane yet | |
3203 | ata_get_par(¤t_par); | |
3204 | fb_info.par = ¤t_par; | |
3205 | // tries to read from HW which may not be initialized yet | |
3206 | // so set sane var first, then call atafb_set_par | |
3207 | atafb_get_var(&fb_info.var, &fb_info); | |
74511413 GU |
3208 | |
3209 | #ifdef ATAFB_FALCON | |
3210 | fb_info.pseudo_palette = current_par.hw.falcon.pseudo_palette; | |
3211 | #endif | |
a1005012 MS |
3212 | fb_info.flags = FBINFO_FLAG_DEFAULT; |
3213 | ||
3214 | if (!fb_find_mode(&fb_info.var, &fb_info, mode_option, atafb_modedb, | |
3215 | NUM_TOTAL_MODES, &atafb_modedb[defmode], | |
3216 | fb_info.var.bits_per_pixel)) { | |
3217 | return -EINVAL; | |
3218 | } | |
3219 | ||
da8513c9 GU |
3220 | fb_videomode_to_modelist(atafb_modedb, NUM_TOTAL_MODES, |
3221 | &fb_info.modelist); | |
3222 | ||
a1005012 MS |
3223 | atafb_set_disp(&fb_info); |
3224 | ||
3225 | fb_alloc_cmap(&(fb_info.cmap), 1 << fb_info.var.bits_per_pixel, 0); | |
3226 | ||
3227 | ||
3228 | printk("Determined %dx%d, depth %d\n", | |
3229 | fb_info.var.xres, fb_info.var.yres, fb_info.var.bits_per_pixel); | |
3230 | if ((fb_info.var.xres != fb_info.var.xres_virtual) || | |
3231 | (fb_info.var.yres != fb_info.var.yres_virtual)) | |
3232 | printk(" virtual %dx%d\n", fb_info.var.xres_virtual, | |
3233 | fb_info.var.yres_virtual); | |
3234 | ||
3235 | if (register_framebuffer(&fb_info) < 0) { | |
3236 | #ifdef ATAFB_EXT | |
3237 | if (external_addr) { | |
3238 | iounmap(external_addr); | |
3239 | external_addr = NULL; | |
3240 | } | |
3241 | if (external_vgaiobase) { | |
3242 | iounmap((void*)external_vgaiobase); | |
3243 | external_vgaiobase = 0; | |
3244 | } | |
1da177e4 | 3245 | #endif |
a1005012 MS |
3246 | return -EINVAL; |
3247 | } | |
3248 | ||
3249 | // FIXME: mode needs setting! | |
3250 | //printk("fb%d: %s frame buffer device, using %dK of video memory\n", | |
3251 | // fb_info.node, fb_info.mode->name, screen_len>>10); | |
3252 | printk("fb%d: frame buffer device, using %dK of video memory\n", | |
3253 | fb_info.node, screen_len >> 10); | |
3254 | ||
3255 | /* TODO: This driver cannot be unloaded yet */ | |
3256 | return 0; | |
1da177e4 LT |
3257 | } |
3258 | ||
a1005012 MS |
3259 | module_init(atafb_init); |
3260 | ||
1da177e4 LT |
3261 | #ifdef MODULE |
3262 | MODULE_LICENSE("GPL"); | |
3263 | ||
a1005012 | 3264 | int cleanup_module(void) |
1da177e4 | 3265 | { |
a1005012 MS |
3266 | unregister_framebuffer(&fb_info); |
3267 | return atafb_deinit(); | |
1da177e4 LT |
3268 | } |
3269 | #endif /* MODULE */ |