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radeonfb: accelerate imageblit and other improvements
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1 #ifndef __RADEONFB_H__
2 #define __RADEONFB_H__
3
4 #ifdef CONFIG_FB_RADEON_DEBUG
5 #define DEBUG           1
6 #endif
7
8 #include <linux/module.h>
9 #include <linux/kernel.h>
10 #include <linux/sched.h>
11 #include <linux/delay.h>
12 #include <linux/pci.h>
13 #include <linux/fb.h>
14
15
16 #ifdef CONFIG_FB_RADEON_I2C
17 #include <linux/i2c.h>
18 #include <linux/i2c-algo-bit.h>
19 #endif
20
21 #include <asm/io.h>
22
23 #if defined(CONFIG_PPC_OF) || defined(CONFIG_SPARC)
24 #include <asm/prom.h>
25 #endif
26
27 #include <video/radeon.h>
28
29 /***************************************************************
30  * Most of the definitions here are adapted right from XFree86 *
31  ***************************************************************/
32
33
34 /*
35  * Chip families. Must fit in the low 16 bits of a long word
36  */
37 enum radeon_family {
38         CHIP_FAMILY_UNKNOW,
39         CHIP_FAMILY_LEGACY,
40         CHIP_FAMILY_RADEON,
41         CHIP_FAMILY_RV100,
42         CHIP_FAMILY_RS100,    /* U1 (IGP320M) or A3 (IGP320)*/
43         CHIP_FAMILY_RV200,
44         CHIP_FAMILY_RS200,    /* U2 (IGP330M/340M/350M) or A4 (IGP330/340/345/350),
45                                  RS250 (IGP 7000) */
46         CHIP_FAMILY_R200,
47         CHIP_FAMILY_RV250,
48         CHIP_FAMILY_RS300,    /* Radeon 9000 IGP */
49         CHIP_FAMILY_RV280,
50         CHIP_FAMILY_R300,
51         CHIP_FAMILY_R350,
52         CHIP_FAMILY_RV350,
53         CHIP_FAMILY_RV380,    /* RV370/RV380/M22/M24 */
54         CHIP_FAMILY_R420,     /* R420/R423/M18 */
55         CHIP_FAMILY_RC410,
56         CHIP_FAMILY_RS400,
57         CHIP_FAMILY_RS480,
58         CHIP_FAMILY_LAST,
59 };
60
61 #define IS_RV100_VARIANT(rinfo) (((rinfo)->family == CHIP_FAMILY_RV100)  || \
62                                  ((rinfo)->family == CHIP_FAMILY_RV200)  || \
63                                  ((rinfo)->family == CHIP_FAMILY_RS100)  || \
64                                  ((rinfo)->family == CHIP_FAMILY_RS200)  || \
65                                  ((rinfo)->family == CHIP_FAMILY_RV250)  || \
66                                  ((rinfo)->family == CHIP_FAMILY_RV280)  || \
67                                  ((rinfo)->family == CHIP_FAMILY_RS300))
68
69
70 #define IS_R300_VARIANT(rinfo) (((rinfo)->family == CHIP_FAMILY_R300)  || \
71                                 ((rinfo)->family == CHIP_FAMILY_RV350) || \
72                                 ((rinfo)->family == CHIP_FAMILY_R350)  || \
73                                 ((rinfo)->family == CHIP_FAMILY_RV380) || \
74                                 ((rinfo)->family == CHIP_FAMILY_R420)  || \
75                                ((rinfo)->family == CHIP_FAMILY_RC410) || \
76                                ((rinfo)->family == CHIP_FAMILY_RS480))
77
78 /*
79  * Chip flags
80  */
81 enum radeon_chip_flags {
82         CHIP_FAMILY_MASK        = 0x0000ffffUL,
83         CHIP_FLAGS_MASK         = 0xffff0000UL,
84         CHIP_IS_MOBILITY        = 0x00010000UL,
85         CHIP_IS_IGP             = 0x00020000UL,
86         CHIP_HAS_CRTC2          = 0x00040000UL, 
87 };
88
89 /*
90  * Errata workarounds
91  */
92 enum radeon_errata {
93         CHIP_ERRATA_R300_CG             = 0x00000001,
94         CHIP_ERRATA_PLL_DUMMYREADS      = 0x00000002,
95         CHIP_ERRATA_PLL_DELAY           = 0x00000004,
96 };
97
98
99 /*
100  * Monitor types
101  */
102 enum radeon_montype {
103         MT_NONE = 0,
104         MT_CRT,         /* CRT */
105         MT_LCD,         /* LCD */
106         MT_DFP,         /* DVI */
107         MT_CTV,         /* composite TV */
108         MT_STV          /* S-Video out */
109 };
110
111 /*
112  * DDC i2c ports
113  */
114 enum ddc_type {
115         ddc_none,
116         ddc_monid,
117         ddc_dvi,
118         ddc_vga,
119         ddc_crt2,
120 };
121
122 /*
123  * Connector types
124  */
125 enum conn_type {
126         conn_none,
127         conn_proprietary,
128         conn_crt,
129         conn_DVI_I,
130         conn_DVI_D,
131 };
132
133
134 /*
135  * PLL infos
136  */
137 struct pll_info {
138         int ppll_max;
139         int ppll_min;
140         int sclk, mclk;
141         int ref_div;
142         int ref_clk;
143 };
144
145
146 /*
147  * This structure contains the various registers manipulated by this
148  * driver for setting or restoring a mode. It's mostly copied from
149  * XFree's RADEONSaveRec structure. A few chip settings might still be
150  * tweaked without beeing reflected or saved in these registers though
151  */
152 struct radeon_regs {
153         /* Common registers */
154         u32             ovr_clr;
155         u32             ovr_wid_left_right;
156         u32             ovr_wid_top_bottom;
157         u32             ov0_scale_cntl;
158         u32             mpp_tb_config;
159         u32             mpp_gp_config;
160         u32             subpic_cntl;
161         u32             viph_control;
162         u32             i2c_cntl_1;
163         u32             gen_int_cntl;
164         u32             cap0_trig_cntl;
165         u32             cap1_trig_cntl;
166         u32             bus_cntl;
167         u32             surface_cntl;
168         u32             bios_5_scratch;
169
170         /* Other registers to save for VT switches or driver load/unload */
171         u32             dp_datatype;
172         u32             rbbm_soft_reset;
173         u32             clock_cntl_index;
174         u32             amcgpio_en_reg;
175         u32             amcgpio_mask;
176
177         /* Surface/tiling registers */
178         u32             surf_lower_bound[8];
179         u32             surf_upper_bound[8];
180         u32             surf_info[8];
181
182         /* CRTC registers */
183         u32             crtc_gen_cntl;
184         u32             crtc_ext_cntl;
185         u32             dac_cntl;
186         u32             crtc_h_total_disp;
187         u32             crtc_h_sync_strt_wid;
188         u32             crtc_v_total_disp;
189         u32             crtc_v_sync_strt_wid;
190         u32             crtc_offset;
191         u32             crtc_offset_cntl;
192         u32             crtc_pitch;
193         u32             disp_merge_cntl;
194         u32             grph_buffer_cntl;
195         u32             crtc_more_cntl;
196
197         /* CRTC2 registers */
198         u32             crtc2_gen_cntl;
199         u32             dac2_cntl;
200         u32             disp_output_cntl;
201         u32             disp_hw_debug;
202         u32             disp2_merge_cntl;
203         u32             grph2_buffer_cntl;
204         u32             crtc2_h_total_disp;
205         u32             crtc2_h_sync_strt_wid;
206         u32             crtc2_v_total_disp;
207         u32             crtc2_v_sync_strt_wid;
208         u32             crtc2_offset;
209         u32             crtc2_offset_cntl;
210         u32             crtc2_pitch;
211
212         /* Flat panel regs */
213         u32             fp_crtc_h_total_disp;
214         u32             fp_crtc_v_total_disp;
215         u32             fp_gen_cntl;
216         u32             fp2_gen_cntl;
217         u32             fp_h_sync_strt_wid;
218         u32             fp2_h_sync_strt_wid;
219         u32             fp_horz_stretch;
220         u32             fp_panel_cntl;
221         u32             fp_v_sync_strt_wid;
222         u32             fp2_v_sync_strt_wid;
223         u32             fp_vert_stretch;
224         u32             lvds_gen_cntl;
225         u32             lvds_pll_cntl;
226         u32             tmds_crc;
227         u32             tmds_transmitter_cntl;
228
229         /* Computed values for PLL */
230         u32             dot_clock_freq;
231         int             feedback_div;
232         int             post_div;       
233
234         /* PLL registers */
235         u32             ppll_div_3;
236         u32             ppll_ref_div;
237         u32             vclk_ecp_cntl;
238         u32             clk_cntl_index;
239
240         /* Computed values for PLL2 */
241         u32             dot_clock_freq_2;
242         int             feedback_div_2;
243         int             post_div_2;
244
245         /* PLL2 registers */
246         u32             p2pll_ref_div;
247         u32             p2pll_div_0;
248         u32             htotal_cntl2;
249
250         /* Palette */
251         int             palette_valid;
252 };
253
254 struct panel_info {
255         int xres, yres;
256         int valid;
257         int clock;
258         int hOver_plus, hSync_width, hblank;
259         int vOver_plus, vSync_width, vblank;
260         int hAct_high, vAct_high, interlaced;
261         int pwr_delay;
262         int use_bios_dividers;
263         int ref_divider;
264         int post_divider;
265         int fbk_divider;
266 };
267
268 struct radeonfb_info;
269
270 #ifdef CONFIG_FB_RADEON_I2C
271 struct radeon_i2c_chan {
272         struct radeonfb_info            *rinfo;
273         u32                             ddc_reg;
274         struct i2c_adapter              adapter;
275         struct i2c_algo_bit_data        algo;
276 };
277 #endif
278
279 enum radeon_pm_mode {
280         radeon_pm_none  = 0,            /* Nothing supported */
281         radeon_pm_d2    = 0x00000001,   /* Can do D2 state */
282         radeon_pm_off   = 0x00000002,   /* Can resume from D3 cold */
283 };
284
285 typedef void (*reinit_function_ptr)(struct radeonfb_info *rinfo);
286
287 struct radeonfb_info {
288         struct fb_info          *info;
289
290         struct radeon_regs      state;
291         struct radeon_regs      init_state;
292
293         char                    name[50];
294
295         unsigned long           mmio_base_phys;
296         unsigned long           fb_base_phys;
297
298         void __iomem            *mmio_base;
299         void __iomem            *fb_base;
300
301         unsigned long           fb_local_base;
302
303         struct pci_dev          *pdev;
304 #if defined(CONFIG_PPC_OF) || defined(CONFIG_SPARC)
305         struct device_node      *of_node;
306 #endif
307
308         void __iomem            *bios_seg;
309         int                     fp_bios_start;
310
311         u32                     pseudo_palette[16];
312         struct { u8 red, green, blue, pad; }
313                                 palette[256];
314
315         int                     chipset;
316         u8                      family;
317         u8                      rev;
318         unsigned int            errata;
319         unsigned long           video_ram;
320         unsigned long           mapped_vram;
321         int                     vram_width;
322         int                     vram_ddr;
323
324         int                     pitch, bpp, depth;
325
326         int                     has_CRTC2;
327         int                     is_mobility;
328         int                     is_IGP;
329         int                     reversed_DAC;
330         int                     reversed_TMDS;
331         struct panel_info       panel_info;
332         int                     mon1_type;
333         u8                      *mon1_EDID;
334         struct fb_videomode     *mon1_modedb;
335         int                     mon1_dbsize;
336         int                     mon2_type;
337         u8                      *mon2_EDID;
338
339         /* accel bits */
340         u32                     dp_gui_mc_base;
341         u32                     dp_gui_mc_cache;
342         u32                     dp_cntl_cache;
343         u32                     dp_brush_fg_cache;
344         u32                     dp_brush_bg_cache;
345         u32                     dp_src_fg_cache;
346         u32                     dp_src_bg_cache;
347         u32                     fifo_free;
348
349         struct pll_info         pll;
350
351         int                     mtrr_hdl;
352
353         int                     pm_reg;
354         u32                     save_regs[100];
355         int                     asleep;
356         int                     lock_blank;
357         int                     dynclk;
358         int                     no_schedule;
359         int                     gfx_mode;
360         enum radeon_pm_mode     pm_mode;
361         reinit_function_ptr     reinit_func;
362
363         /* Lock on register access */
364         spinlock_t              reg_lock;
365
366         /* Timer used for delayed LVDS operations */
367         struct timer_list       lvds_timer;
368         u32                     pending_lvds_gen_cntl;
369
370 #ifdef CONFIG_FB_RADEON_I2C
371         struct radeon_i2c_chan  i2c[4];
372 #endif
373
374         u32                     cfg_save[64];
375 };
376
377
378 #define PRIMARY_MONITOR(rinfo)  (rinfo->mon1_type)
379
380
381 /*
382  * IO macros
383  */
384
385 /* Note about this function: we have some rare cases where we must not schedule,
386  * this typically happen with our special "wake up early" hook which allows us to
387  * wake up the graphic chip (and thus get the console back) before everything else
388  * on some machines that support that mechanism. At this point, interrupts are off
389  * and scheduling is not permitted
390  */
391 static inline void _radeon_msleep(struct radeonfb_info *rinfo, unsigned long ms)
392 {
393         if (rinfo->no_schedule || oops_in_progress)
394                 mdelay(ms);
395         else
396                 msleep(ms);
397 }
398
399
400 #define INREG8(addr)            readb((rinfo->mmio_base)+addr)
401 #define OUTREG8(addr,val)       writeb(val, (rinfo->mmio_base)+addr)
402 #define INREG16(addr)           readw((rinfo->mmio_base)+addr)
403 #define OUTREG16(addr,val)      writew(val, (rinfo->mmio_base)+addr)
404
405 #ifdef CONFIG_PPC
406 #define INREG(addr)             ({ eieio(); ld_le32(rinfo->mmio_base+(addr)); })
407 #define OUTREG(addr,val)        do { eieio(); st_le32(rinfo->mmio_base+(addr),(val)); } while(0)
408 #else
409 #define INREG(addr)             readl((rinfo->mmio_base)+addr)
410 #define OUTREG(addr,val)        writel(val, (rinfo->mmio_base)+addr)
411 #endif
412
413 static inline void _OUTREGP(struct radeonfb_info *rinfo, u32 addr,
414                        u32 val, u32 mask)
415 {
416         unsigned long flags;
417         unsigned int tmp;
418
419         spin_lock_irqsave(&rinfo->reg_lock, flags);
420         tmp = INREG(addr);
421         tmp &= (mask);
422         tmp |= (val);
423         OUTREG(addr, tmp);
424         spin_unlock_irqrestore(&rinfo->reg_lock, flags);
425 }
426
427 #define OUTREGP(addr,val,mask)  _OUTREGP(rinfo, addr, val,mask)
428
429 /*
430  * Note about PLL register accesses:
431  *
432  * I have removed the spinlock on them on purpose. The driver now
433  * expects that it will only manipulate the PLL registers in normal
434  * task environment, where radeon_msleep() will be called, protected
435  * by a semaphore (currently the console semaphore) so that no conflict
436  * will happen on the PLL register index.
437  *
438  * With the latest changes to the VT layer, this is guaranteed for all
439  * calls except the actual drawing/blits which aren't supposed to use
440  * the PLL registers anyway
441  *
442  * This is very important for the workarounds to work properly. The only
443  * possible exception to this rule is the call to unblank(), which may
444  * be done at irq time if an oops is in progress.
445  */
446 static inline void radeon_pll_errata_after_index(struct radeonfb_info *rinfo)
447 {
448         if (!(rinfo->errata & CHIP_ERRATA_PLL_DUMMYREADS))
449                 return;
450
451         (void)INREG(CLOCK_CNTL_DATA);
452         (void)INREG(CRTC_GEN_CNTL);
453 }
454
455 static inline void radeon_pll_errata_after_data(struct radeonfb_info *rinfo)
456 {
457         if (rinfo->errata & CHIP_ERRATA_PLL_DELAY) {
458                 /* we can't deal with posted writes here ... */
459                 _radeon_msleep(rinfo, 5);
460         }
461         if (rinfo->errata & CHIP_ERRATA_R300_CG) {
462                 u32 save, tmp;
463                 save = INREG(CLOCK_CNTL_INDEX);
464                 tmp = save & ~(0x3f | PLL_WR_EN);
465                 OUTREG(CLOCK_CNTL_INDEX, tmp);
466                 tmp = INREG(CLOCK_CNTL_DATA);
467                 OUTREG(CLOCK_CNTL_INDEX, save);
468         }
469 }
470
471 static inline u32 __INPLL(struct radeonfb_info *rinfo, u32 addr)
472 {
473         u32 data;
474
475         OUTREG8(CLOCK_CNTL_INDEX, addr & 0x0000003f);
476         radeon_pll_errata_after_index(rinfo);
477         data = INREG(CLOCK_CNTL_DATA);
478         radeon_pll_errata_after_data(rinfo);
479         return data;
480 }
481
482 static inline void __OUTPLL(struct radeonfb_info *rinfo, unsigned int index,
483                             u32 val)
484 {
485
486         OUTREG8(CLOCK_CNTL_INDEX, (index & 0x0000003f) | 0x00000080);
487         radeon_pll_errata_after_index(rinfo);
488         OUTREG(CLOCK_CNTL_DATA, val);
489         radeon_pll_errata_after_data(rinfo);
490 }
491
492
493 static inline void __OUTPLLP(struct radeonfb_info *rinfo, unsigned int index,
494                              u32 val, u32 mask)
495 {
496         unsigned int tmp;
497
498         tmp  = __INPLL(rinfo, index);
499         tmp &= (mask);
500         tmp |= (val);
501         __OUTPLL(rinfo, index, tmp);
502 }
503
504
505 #define INPLL(addr)                     __INPLL(rinfo, addr)
506 #define OUTPLL(index, val)              __OUTPLL(rinfo, index, val)
507 #define OUTPLLP(index, val, mask)       __OUTPLLP(rinfo, index, val, mask)
508
509
510 #define BIOS_IN8(v)     (readb(rinfo->bios_seg + (v)))
511 #define BIOS_IN16(v)    (readb(rinfo->bios_seg + (v)) | \
512                           (readb(rinfo->bios_seg + (v) + 1) << 8))
513 #define BIOS_IN32(v)    (readb(rinfo->bios_seg + (v)) | \
514                           (readb(rinfo->bios_seg + (v) + 1) << 8) | \
515                           (readb(rinfo->bios_seg + (v) + 2) << 16) | \
516                           (readb(rinfo->bios_seg + (v) + 3) << 24))
517
518 /*
519  * Inline utilities
520  */
521 static inline int round_div(int num, int den)
522 {
523         return (num + (den / 2)) / den;
524 }
525
526 static inline int var_to_depth(const struct fb_var_screeninfo *var)
527 {
528         if (var->bits_per_pixel != 16)
529                 return var->bits_per_pixel;
530         return (var->green.length == 5) ? 15 : 16;
531 }
532
533 static inline u32 radeon_get_dstbpp(u16 depth)
534 {
535         switch (depth) {
536         case 8:
537                 return DST_8BPP;
538         case 15:
539                 return DST_15BPP;
540         case 16:
541                 return DST_16BPP;
542         case 32:
543                 return DST_32BPP;
544         default:
545                 return 0;
546         }
547 }
548
549 /*
550  * 2D Engine helper routines
551  */
552
553 extern void radeon_fifo_update_and_wait(struct radeonfb_info *rinfo, int entries);
554
555 static inline void radeon_engine_flush (struct radeonfb_info *rinfo)
556 {
557         int i;
558
559         /* Initiate flush */
560         OUTREGP(DSTCACHE_CTLSTAT, RB2D_DC_FLUSH_ALL,
561                 ~RB2D_DC_FLUSH_ALL);
562
563         /* Ensure FIFO is empty, ie, make sure the flush commands
564          * has reached the cache
565          */
566         radeon_fifo_update_and_wait(rinfo, 64);
567
568         /* Wait for the flush to complete */
569         for (i=0; i < 2000000; i++) {
570                 if (!(INREG(DSTCACHE_CTLSTAT) & RB2D_DC_BUSY))
571                         return;
572                 udelay(1);
573         }
574         printk(KERN_ERR "radeonfb: Flush Timeout !\n");
575 }
576
577
578 static inline void radeon_engine_idle(struct radeonfb_info *rinfo)
579 {
580         int i;
581
582         /* ensure FIFO is empty before waiting for idle */
583         radeon_fifo_update_and_wait (rinfo, 64);
584
585         for (i=0; i<2000000; i++) {
586                 if (((INREG(RBBM_STATUS) & GUI_ACTIVE)) == 0) {
587                         radeon_engine_flush (rinfo);
588                         return;
589                 }
590                 udelay(1);
591         }
592         printk(KERN_ERR "radeonfb: Idle Timeout !\n");
593 }
594
595
596 #define radeon_msleep(ms)               _radeon_msleep(rinfo,ms)
597
598
599 /* I2C Functions */
600 extern void radeon_create_i2c_busses(struct radeonfb_info *rinfo);
601 extern void radeon_delete_i2c_busses(struct radeonfb_info *rinfo);
602 extern int radeon_probe_i2c_connector(struct radeonfb_info *rinfo, int conn, u8 **out_edid);
603
604 /* PM Functions */
605 extern int radeonfb_pci_suspend(struct pci_dev *pdev, pm_message_t state);
606 extern int radeonfb_pci_resume(struct pci_dev *pdev);
607 extern void radeonfb_pm_init(struct radeonfb_info *rinfo, int dynclk, int ignore_devlist, int force_sleep);
608 extern void radeonfb_pm_exit(struct radeonfb_info *rinfo);
609
610 /* Monitor probe functions */
611 extern void radeon_probe_screens(struct radeonfb_info *rinfo,
612                                  const char *monitor_layout, int ignore_edid);
613 extern void radeon_check_modes(struct radeonfb_info *rinfo, const char *mode_option);
614 extern int radeon_match_mode(struct radeonfb_info *rinfo,
615                              struct fb_var_screeninfo *dest,
616                              const struct fb_var_screeninfo *src);
617
618 /* Accel functions */
619 extern void radeonfb_fillrect(struct fb_info *info, const struct fb_fillrect *region);
620 extern void radeonfb_copyarea(struct fb_info *info, const struct fb_copyarea *area);
621 extern void radeonfb_imageblit(struct fb_info *p, const struct fb_image *image);
622 extern int radeonfb_sync(struct fb_info *info);
623 extern void radeonfb_engine_init (struct radeonfb_info *rinfo);
624 extern void radeonfb_engine_reset(struct radeonfb_info *rinfo);
625 extern void radeon_fixup_mem_offset(struct radeonfb_info *rinfo);
626
627 /* Other functions */
628 extern int radeon_screen_blank(struct radeonfb_info *rinfo, int blank, int mode_switch);
629 extern void radeon_write_mode (struct radeonfb_info *rinfo, struct radeon_regs *mode,
630                                int reg_only);
631
632 /* Backlight functions */
633 #ifdef CONFIG_FB_RADEON_BACKLIGHT
634 extern void radeonfb_bl_init(struct radeonfb_info *rinfo);
635 extern void radeonfb_bl_exit(struct radeonfb_info *rinfo);
636 #else
637 static inline void radeonfb_bl_init(struct radeonfb_info *rinfo) {}
638 static inline void radeonfb_bl_exit(struct radeonfb_info *rinfo) {}
639 #endif
640
641 #endif /* __RADEONFB_H__ */