summaryrefslogtreecommitdiffstats
path: root/drivers/video/fbdev/sticore.h
blob: af1619536ac84f3d2b638c400f7bf674cd087724 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
#ifndef STICORE_H
#define STICORE_H

/* generic STI structures & functions */

#if 0
#define DPRINTK(x)	printk x
#else
#define DPRINTK(x) 
#endif

#define MAX_STI_ROMS 4		/* max no. of ROMs which this driver handles */

#define STI_REGION_MAX 8	/* hardcoded STI constants */
#define STI_DEV_NAME_LENGTH 32
#define STI_MONITOR_MAX 256

#define STI_FONT_HPROMAN8 1
#define STI_FONT_KANA8 2

#define ALT_CODE_TYPE_UNKNOWN 0x00	/* alt code type values */
#define ALT_CODE_TYPE_PA_RISC_64 0x01

/* The latency of the STI functions cannot really be reduced by setting
 * this to 0;  STI doesn't seem to be designed to allow calling a different
 * function (or the same function with different arguments) after a
 * function exited with 1 as return value.
 *
 * As all of the functions below could be called from interrupt context,
 * we have to spin_lock_irqsave around the do { ret = bla(); } while(ret==1)
 * block.  Really bad latency there.
 *
 * Probably the best solution to all this is have the generic code manage
 * the screen buffer and a kernel thread to call STI occasionally.
 * 
 * Luckily, the frame buffer guys have the same problem so we can just wait
 * for them to fix it and steal their solution.   prumpf
 */
 
#include <asm/io.h>

#define STI_WAIT 1

#define STI_PTR(p)	( virt_to_phys(p) )
#define PTR_STI(p)	( phys_to_virt((unsigned long)p) )

#define sti_onscreen_x(sti) (sti->glob_cfg->onscreen_x)
#define sti_onscreen_y(sti) (sti->glob_cfg->onscreen_y)

/* sti_font_xy() use the native font ROM ! */
#define sti_font_x(sti) (PTR_STI(sti->font)->width)
#define sti_font_y(sti) (PTR_STI(sti->font)->height)

#ifdef CONFIG_64BIT
#define STI_LOWMEM	(GFP_KERNEL | GFP_DMA)
#else
#define STI_LOWMEM	(GFP_KERNEL)
#endif


/* STI function configuration structs */

typedef union region {
	struct { 
		u32 offset	: 14;	/* offset in 4kbyte page */
		u32 sys_only	: 1;	/* don't map to user space */
		u32 cache	: 1;	/* map to data cache */
		u32 btlb	: 1;	/* map to block tlb */
		u32 last	: 1;	/* last region in list */
		u32 length	: 14;	/* length in 4kbyte page */
	} region_desc;

	u32 region;			/* complete region value */
} region_t;

#define REGION_OFFSET_TO_PHYS( rt, hpa ) \
	(((rt).region_desc.offset << 12) + (hpa))

struct sti_glob_cfg_ext {
	 u8 curr_mon;			/* current monitor configured */
	 u8 friendly_boot;		/* in friendly boot mode */
	s16 power;			/* power calculation (in Watts) */
	s32 freq_ref;			/* frequency reference */
	u32 sti_mem_addr;		/* pointer to global sti memory (size=sti_mem_request) */
	u32 future_ptr; 		/* pointer to future data */
};

struct sti_glob_cfg {
	s32 text_planes;		/* number of planes used for text */
	s16 onscreen_x;			/* screen width in pixels */
	s16 onscreen_y;			/* screen height in pixels */
	s16 offscreen_x;		/* offset width in pixels */
	s16 offscreen_y;		/* offset height in pixels */
	s16 total_x;			/* frame buffer width in pixels */
	s16 total_y;			/* frame buffer height in pixels */
	u32 region_ptrs[STI_REGION_MAX]; /* region pointers */
	s32 reent_lvl;			/* storage for reentry level value */
	u32 save_addr;			/* where to save or restore reentrant state */
	u32 ext_ptr;			/* pointer to extended glob_cfg data structure */
};


/* STI init function structs */

struct sti_init_flags {
	u32 wait : 1;		/* should routine idle wait or not */
	u32 reset : 1;		/* hard reset the device? */
	u32 text : 1;		/* turn on text display planes? */
	u32 nontext : 1;	/* turn on non-text display planes? */
	u32 clear : 1;		/* clear text display planes? */
	u32 cmap_blk : 1;	/* non-text planes cmap black? */
	u32 enable_be_timer : 1; /* enable bus error timer */
	u32 enable_be_int : 1;	/* enable bus error timer interrupt */
	u32 no_chg_tx : 1;	/* don't change text settings */
	u32 no_chg_ntx : 1;	/* don't change non-text settings */
	u32 no_chg_bet : 1;	/* don't change berr timer settings */
	u32 no_chg_bei : 1;	/* don't change berr int settings */
	u32 init_cmap_tx : 1;	/* initialize cmap for text planes */
	u32 cmt_chg : 1;	/* change current monitor type */
	u32 retain_ie : 1;	/* don't allow reset to clear int enables */
	u32 caller_bootrom : 1;	/* set only by bootrom for each call */
	u32 caller_kernel : 1;	/* set only by kernel for each call */
	u32 caller_other : 1;	/* set only by non-[BR/K] caller */
	u32 pad	: 14;		/* pad to word boundary */
	u32 future_ptr; 	/* pointer to future data */
};

struct sti_init_inptr_ext {
	u8  config_mon_type;	/* configure to monitor type */
	u8  pad[1];		/* pad to word boundary */
	u16 inflight_data;	/* inflight data possible on PCI */
	u32 future_ptr; 	/* pointer to future data */
};

struct sti_init_inptr {
	s32 text_planes;	/* number of planes to use for text */
	u32 ext_ptr;		/* pointer to extended init_graph inptr data structure*/
};


struct sti_init_outptr {
	s32 errno;		/* error number on failure */
	s32 text_planes;	/* number of planes used for text */
	u32 future_ptr; 	/* pointer to future data */
};



/* STI configuration function structs */

struct sti_conf_flags {
	u32 wait : 1;		/* should routine idle wait or not */
	u32 pad : 31;		/* pad to word boundary */
	u32 future_ptr; 	/* pointer to future data */
};

struct sti_conf_inptr {
	u32 future_ptr; 	/* pointer to future data */
};

struct sti_conf_outptr_ext {
	u32 crt_config[3];	/* hardware specific X11/OGL information */	
	u32 crt_hdw[3];
	u32 future_ptr;
};

struct sti_conf_outptr {
	s32 errno;		/* error number on failure */
	s16 onscreen_x;		/* screen width in pixels */
	s16 onscreen_y;		/* screen height in pixels */
	s16 offscreen_x;	/* offscreen width in pixels */
	s16 offscreen_y;	/* offscreen height in pixels */
	s16 total_x;		/* frame buffer width in pixels */
	s16 total_y;		/* frame buffer height in pixels */
	s32 bits_per_pixel;	/* bits/pixel device has configured */
	s32 bits_used;		/* bits which can be accessed */
	s32 planes;		/* number of fb planes in system */
	 u8 dev_name[STI_DEV_NAME_LENGTH]; /* null terminated product name */
	u32 attributes;		/* flags denoting attributes */
	u32 ext_ptr;		/* pointer to future data */
};

struct sti_rom {
	 u8 type[4];
	 u8 res004;
	 u8 num_mons;
	 u8 revno[2];
	u32 graphics_id[2];

	u32 font_start;
	u32 statesize;
	u32 last_addr;
	u32 region_list;

	u16 reentsize;
	u16 maxtime;
	u32 mon_tbl_addr;
	u32 user_data_addr;
	u32 sti_mem_req;

	u32 user_data_size;
	u16 power;
	 u8 bus_support;
	 u8 ext_bus_support;
	 u8 alt_code_type;
	 u8 ext_dd_struct[3];
	u32 cfb_addr;

	u32 init_graph;
	u32 state_mgmt;
	u32 font_unpmv;
	u32 block_move;
	u32 self_test;
	u32 excep_hdlr;
	u32 inq_conf;
	u32 set_cm_entry;
	u32 dma_ctrl;
	 u8 res040[7 * 4];
	
	u32 init_graph_addr;
	u32 state_mgmt_addr;
	u32 font_unp_addr;
	u32 block_move_addr;
	u32 self_test_addr;
	u32 excep_hdlr_addr;
	u32 inq_conf_addr;
	u32 set_cm_entry_addr;
	u32 image_unpack_addr;
	u32 pa_risx_addrs[7];
};

struct sti_rom_font {
	u16 first_char;
	u16 last_char;
	 u8 width;
	 u8 height;
	 u8 font_type;		/* language type */
	 u8 bytes_per_char;
	u32 next_font;
	 u8 underline_height;
	 u8 underline_pos;
	 u8 res008[2];
};

/* sticore internal font handling */

struct sti_cooked_font {
        struct sti_rom_font *raw;
	struct sti_cooked_font *next_font;
};

struct sti_cooked_rom {
        struct sti_rom *raw;
	struct sti_cooked_font *font_start;
};

/* STI font printing function structs */

struct sti_font_inptr {
	u32 font_start_addr;	/* address of font start */
	s16 index;		/* index into font table of character */
	u8 fg_color;		/* foreground color of character */
	u8 bg_color;		/* background color of character */
	s16 dest_x;		/* X location of character upper left */
	s16 dest_y;		/* Y location of character upper left */
	u32 future_ptr; 	/* pointer to future data */
};

struct sti_font_flags {
	u32 wait : 1;		/* should routine idle wait or not */
	u32 non_text : 1;	/* font unpack/move in non_text planes =1, text =0 */
	u32 pad : 30;		/* pad to word boundary */
	u32 future_ptr; 	/* pointer to future data */
};
	
struct sti_font_outptr {
	s32 errno;		/* error number on failure */
	u32 future_ptr; 	/* pointer to future data */
};

/* STI blockmove structs */

struct sti_blkmv_flags {
	u32 wait : 1;		/* should routine idle wait or not */
	u32 color : 1;		/* change color during move? */
	u32 clear : 1;		/* clear during move? */
	u32 non_text : 1;	/* block move in non_text planes =1, text =0 */
	u32 pad : 28;		/* pad to word boundary */
	u32 future_ptr; 	/* pointer to future data */
};

struct sti_blkmv_inptr {
	u8 fg_color;		/* foreground color after move */
	u8 bg_color;		/* background color after move */
	s16 src_x;		/* source upper left pixel x location */
	s16 src_y;		/* source upper left pixel y location */
	s16 dest_x;		/* dest upper left pixel x location */
	s16 dest_y;		/* dest upper left pixel y location */
	s16 width;		/* block width in pixels */
	s16 height;		/* block height in pixels */
	u32 future_ptr; 	/* pointer to future data */
};

struct sti_blkmv_outptr {
	s32 errno;		/* error number on failure */
	u32 future_ptr; 	/* pointer to future data */
};


/* sti_all_data is an internal struct which needs to be allocated in
 * low memory (< 4GB) if STI is used with 32bit STI on a 64bit kernel */

struct sti_all_data {
	struct sti_glob_cfg glob_cfg;
	struct sti_glob_cfg_ext glob_cfg_ext;

	struct sti_conf_inptr		inq_inptr;
	struct sti_conf_outptr		inq_outptr; /* configuration */
	struct sti_conf_outptr_ext	inq_outptr_ext;

	struct sti_init_inptr_ext	init_inptr_ext;
	struct sti_init_inptr		init_inptr;
	struct sti_init_outptr		init_outptr;

	struct sti_blkmv_inptr		blkmv_inptr;
	struct sti_blkmv_outptr		blkmv_outptr;

	struct sti_font_inptr		font_inptr;
	struct sti_font_outptr		font_outptr;

	/* leave as last entries */
	unsigned long save_addr[1024 / sizeof(unsigned long)];
	   /* min 256 bytes which is STI default, max sti->sti_mem_request */
	unsigned long sti_mem_addr[256 / sizeof(unsigned long)];
	/* do not add something below here ! */
};

/* internal generic STI struct */

struct sti_struct {
	spinlock_t lock;
		
	/* the following fields needs to be filled in by the word/byte routines */
	int font_width;	
	int font_height;
	/* char **mon_strings; */
	int sti_mem_request;
	u32 graphics_id[2];

	struct sti_cooked_rom *rom;

	unsigned long font_unpmv;
	unsigned long block_move;
	unsigned long init_graph;
	unsigned long inq_conf;

	/* all following fields are initialized by the generic routines */
	int text_planes;
	region_t regions[STI_REGION_MAX];
	unsigned long regions_phys[STI_REGION_MAX];

	struct sti_glob_cfg *glob_cfg;	/* points into sti_all_data */

	struct sti_cooked_font *font;	/* ptr to selected font (cooked) */

	struct pci_dev *pd;

	/* PCI data structures (pg. 17ff from sti.pdf) */
	u8 rm_entry[16]; /* pci region mapper array == pci config space offset */

	/* pointer to the fb_info where this STI device is used */
	struct fb_info *info;

	/* pointer to all internal data */
	struct sti_all_data *sti_data;
};


/* sticore interface functions */

struct sti_struct *sti_get_rom(unsigned int index); /* 0: default sti */


/* sticore main function to call STI firmware */

int sti_call(const struct sti_struct *sti, unsigned long func,
		const void *flags, void *inptr, void *outptr,
		struct sti_glob_cfg *glob_cfg);


/* functions to call the STI ROM directly */

void sti_putc(struct sti_struct *sti, int c, int y, int x);
void sti_set(struct sti_struct *sti, int src_y, int src_x,
	     int height, int width, u8 color);
void sti_clear(struct sti_struct *sti, int src_y, int src_x,
	       int height, int width, int c);
void sti_bmove(struct sti_struct *sti, int src_y, int src_x,
	       int dst_y, int dst_x, int height, int width);

#endif	/* STICORE_H */