intelfb: fixup p calculation
[safe/jmp/linux-2.6] / drivers / video / intelfb / intelfbhw.h
1 #ifndef _INTELFBHW_H
2 #define _INTELFBHW_H
3
4 /* $DHD: intelfb/intelfbhw.h,v 1.5 2003/06/27 15:06:25 dawes Exp $ */
5
6
7 /*** HW-specific data ***/
8
9 /* Information about the 852GM/855GM variants */
10 #define INTEL_85X_CAPID         0x44
11 #define INTEL_85X_VARIANT_MASK          0x7
12 #define INTEL_85X_VARIANT_SHIFT         5
13 #define INTEL_VAR_855GME                0x0
14 #define INTEL_VAR_855GM                 0x4
15 #define INTEL_VAR_852GME                0x2
16 #define INTEL_VAR_852GM                 0x5
17
18 /* Information about DVO/LVDS Ports */
19 #define DVOA_PORT  0x1
20 #define DVOB_PORT  0x2
21 #define DVOC_PORT  0x4
22 #define LVDS_PORT  0x8
23
24 /*
25  * The Bridge device's PCI config space has information about the
26  * fb aperture size and the amount of pre-reserved memory.
27  */
28 #define INTEL_GMCH_CTRL         0x52
29 #define INTEL_GMCH_ENABLED              0x4
30 #define INTEL_GMCH_MEM_MASK             0x1
31 #define INTEL_GMCH_MEM_64M              0x1
32 #define INTEL_GMCH_MEM_128M             0
33
34 #define INTEL_830_GMCH_GMS_MASK         (0x7 << 4)
35 #define INTEL_830_GMCH_GMS_DISABLED     (0x0 << 4)
36 #define INTEL_830_GMCH_GMS_LOCAL        (0x1 << 4)
37 #define INTEL_830_GMCH_GMS_STOLEN_512   (0x2 << 4)
38 #define INTEL_830_GMCH_GMS_STOLEN_1024  (0x3 << 4)
39 #define INTEL_830_GMCH_GMS_STOLEN_8192  (0x4 << 4)
40
41 #define INTEL_855_GMCH_GMS_MASK         (0x7 << 4)
42 #define INTEL_855_GMCH_GMS_DISABLED     (0x0 << 4)
43 #define INTEL_855_GMCH_GMS_STOLEN_1M    (0x1 << 4)
44 #define INTEL_855_GMCH_GMS_STOLEN_4M    (0x2 << 4)
45 #define INTEL_855_GMCH_GMS_STOLEN_8M    (0x3 << 4)
46 #define INTEL_855_GMCH_GMS_STOLEN_16M   (0x4 << 4)
47 #define INTEL_855_GMCH_GMS_STOLEN_32M   (0x5 << 4)
48
49 #define INTEL_915G_GMCH_GMS_STOLEN_48M  (0x6 << 4)
50 #define INTEL_915G_GMCH_GMS_STOLEN_64M  (0x7 << 4)
51
52 /* HW registers */
53
54 /* Fence registers */
55 #define FENCE                   0x2000
56 #define FENCE_NUM                       8
57
58 /* Primary ring buffer */
59 #define PRI_RING_TAIL           0x2030
60 #define RING_TAIL_MASK                  0x001ffff8
61 #define RING_INUSE                      0x1
62
63 #define PRI_RING_HEAD           0x2034
64 #define RING_HEAD_WRAP_MASK             0x7ff
65 #define RING_HEAD_WRAP_SHIFT            21
66 #define RING_HEAD_MASK                  0x001ffffc
67
68 #define PRI_RING_START          0x2038
69 #define RING_START_MASK                 0xfffff000
70
71 #define PRI_RING_LENGTH         0x203c
72 #define RING_LENGTH_MASK                0x001ff000
73 #define RING_REPORT_MASK                (0x3 << 1)
74 #define RING_NO_REPORT                  (0x0 << 1)
75 #define RING_REPORT_64K                 (0x1 << 1)
76 #define RING_REPORT_4K                  (0x2 << 1)
77 #define RING_REPORT_128K                (0x3 << 1)
78 #define RING_ENABLE                     0x1
79
80 /*
81  * Tail can't wrap to any closer than RING_MIN_FREE bytes of the head,
82  * and the last RING_MIN_FREE bytes need to be padded with MI_NOOP
83  */
84 #define RING_MIN_FREE                   64
85
86 #define IPEHR                   0x2088
87
88 #define INSTDONE                0x2090
89 #define PRI_RING_EMPTY                  1
90
91 #define INSTPM                  0x20c0
92 #define SYNC_FLUSH_ENABLE               (1 << 5)
93
94 #define INSTPS                  0x20c4
95
96 #define MEM_MODE                0x20cc
97
98 #define MASK_SHIFT                      16
99
100 #define FW_BLC_0                0x20d8
101 #define FW_DISPA_WM_SHIFT               0
102 #define FW_DISPA_WM_MASK                0x3f
103 #define FW_DISPA_BL_SHIFT               8
104 #define FW_DISPA_BL_MASK                0xf
105 #define FW_DISPB_WM_SHIFT               16
106 #define FW_DISPB_WM_MASK                0x1f
107 #define FW_DISPB_BL_SHIFT               24
108 #define FW_DISPB_BL_MASK                0x7
109
110 #define FW_BLC_1                0x20dc
111 #define FW_DISPC_WM_SHIFT               0
112 #define FW_DISPC_WM_MASK                0x1f
113 #define FW_DISPC_BL_SHIFT               8
114 #define FW_DISPC_BL_MASK                0x7
115
116
117 /* PLL registers */
118 #define VGA0_DIVISOR            0x06000
119 #define VGA1_DIVISOR            0x06004
120 #define VGAPD                   0x06010
121 #define VGAPD_0_P1_SHIFT                0
122 #define VGAPD_0_P1_FORCE_DIV2           (1 << 5)
123 #define VGAPD_0_P2_SHIFT                7
124 #define VGAPD_1_P1_SHIFT                8
125 #define VGAPD_1_P1_FORCE_DIV2           (1 << 13)
126 #define VGAPD_1_P2_SHIFT                15
127
128 #define DPLL_A                  0x06014
129 #define DPLL_B                  0x06018
130 #define DPLL_VCO_ENABLE                 (1 << 31)
131 #define DPLL_2X_CLOCK_ENABLE            (1 << 30)
132 #define DPLL_SYNCLOCK_ENABLE            (1 << 29)
133 #define DPLL_VGA_MODE_DISABLE           (1 << 28)
134 #define DPLL_P2_MASK                    1
135 #define DPLL_P2_SHIFT                   23
136 #define DPLL_I9XX_P2_SHIFT              24
137 #define DPLL_P1_FORCE_DIV2              (1 << 21)
138 #define DPLL_P1_MASK                    0x1f
139 #define DPLL_P1_SHIFT                   16
140 #define DPLL_REFERENCE_SELECT_MASK      (0x3 << 13)
141 #define DPLL_REFERENCE_DEFAULT          (0x0 << 13)
142 #define DPLL_REFERENCE_TVCLK            (0x2 << 13)
143 #define DPLL_RATE_SELECT_MASK           (1 << 8)
144 #define DPLL_RATE_SELECT_FP0            (0 << 8)
145 #define DPLL_RATE_SELECT_FP1            (1 << 8)
146
147 #define FPA0                    0x06040
148 #define FPA1                    0x06044
149 #define FPB0                    0x06048
150 #define FPB1                    0x0604c
151 #define FP_DIVISOR_MASK                 0x3f
152 #define FP_N_DIVISOR_SHIFT              16
153 #define FP_M1_DIVISOR_SHIFT             8
154 #define FP_M2_DIVISOR_SHIFT             0
155
156 /* PLL parameters (these are for 852GM/855GM/865G, check earlier chips). */
157 /* Clock values are in units of kHz */
158 #define PLL_REFCLK              48000
159 #define MIN_CLOCK               25000
160 #define MAX_CLOCK               350000
161
162 /* Two pipes */
163 #define PIPE_A                  0
164 #define PIPE_B                  1
165 #define PIPE_MASK               1
166
167 /* palette registers */
168 #define PALETTE_A               0x0a000
169 #define PALETTE_B               0x0a800
170 #ifndef PALETTE_8_ENTRIES
171 #define PALETTE_8_ENTRIES               256
172 #endif
173 #define PALETTE_8_SIZE                  (PALETTE_8_ENTRIES * 4)
174 #define PALETTE_10_ENTRIES              128
175 #define PALETTE_10_SIZE                 (PALETTE_10_ENTRIES * 8)
176 #define PALETTE_8_MASK                  0xff
177 #define PALETTE_8_RED_SHIFT             16
178 #define PALETTE_8_GREEN_SHIFT           8
179 #define PALETTE_8_BLUE_SHIFT            0
180
181 /* CRTC registers */
182 #define HTOTAL_A                0x60000
183 #define HBLANK_A                0x60004
184 #define HSYNC_A                 0x60008
185 #define VTOTAL_A                0x6000c
186 #define VBLANK_A                0x60010
187 #define VSYNC_A                 0x60014
188 #define SRC_SIZE_A              0x6001c
189 #define BCLRPAT_A               0x60020
190
191 #define HTOTAL_B                0x61000
192 #define HBLANK_B                0x61004
193 #define HSYNC_B                 0x61008
194 #define VTOTAL_B                0x6100c
195 #define VBLANK_B                0x61010
196 #define VSYNC_B                 0x61014
197 #define SRC_SIZE_B              0x6101c
198 #define BCLRPAT_B               0x61020
199
200 #define HTOTAL_MASK                     0xfff
201 #define HTOTAL_SHIFT                    16
202 #define HACTIVE_MASK                    0x7ff
203 #define HACTIVE_SHIFT                   0
204 #define HBLANKEND_MASK                  0xfff
205 #define HBLANKEND_SHIFT                 16
206 #define HBLANKSTART_MASK                0xfff
207 #define HBLANKSTART_SHIFT               0
208 #define HSYNCEND_MASK                   0xfff
209 #define HSYNCEND_SHIFT                  16
210 #define HSYNCSTART_MASK                 0xfff
211 #define HSYNCSTART_SHIFT                0
212 #define VTOTAL_MASK                     0xfff
213 #define VTOTAL_SHIFT                    16
214 #define VACTIVE_MASK                    0x7ff
215 #define VACTIVE_SHIFT                   0
216 #define VBLANKEND_MASK                  0xfff
217 #define VBLANKEND_SHIFT                 16
218 #define VBLANKSTART_MASK                0xfff
219 #define VBLANKSTART_SHIFT               0
220 #define VSYNCEND_MASK                   0xfff
221 #define VSYNCEND_SHIFT                  16
222 #define VSYNCSTART_MASK                 0xfff
223 #define VSYNCSTART_SHIFT                0
224 #define SRC_SIZE_HORIZ_MASK             0x7ff
225 #define SRC_SIZE_HORIZ_SHIFT            16
226 #define SRC_SIZE_VERT_MASK              0x7ff
227 #define SRC_SIZE_VERT_SHIFT             0
228
229 #define ADPA                    0x61100
230 #define ADPA_DAC_ENABLE                 (1 << 31)
231 #define ADPA_DAC_DISABLE                0
232 #define ADPA_PIPE_SELECT_SHIFT          30
233 #define ADPA_USE_VGA_HVPOLARITY         (1 << 15)
234 #define ADPA_SETS_HVPOLARITY            0
235 #define ADPA_DPMS_CONTROL_MASK          (0x3 << 10)
236 #define ADPA_DPMS_D0                    (0x0 << 10)
237 #define ADPA_DPMS_D2                    (0x1 << 10)
238 #define ADPA_DPMS_D1                    (0x2 << 10)
239 #define ADPA_DPMS_D3                    (0x3 << 10)
240 #define ADPA_VSYNC_ACTIVE_SHIFT         4
241 #define ADPA_HSYNC_ACTIVE_SHIFT         3
242 #define ADPA_SYNC_ACTIVE_MASK           1
243 #define ADPA_SYNC_ACTIVE_HIGH           1
244 #define ADPA_SYNC_ACTIVE_LOW            0
245
246 #define DVOA                    0x61120
247 #define DVOB                    0x61140
248 #define DVOC                    0x61160
249 #define LVDS                    0x61180
250 #define PORT_ENABLE                     (1 << 31)
251 #define PORT_PIPE_SELECT_SHIFT          30
252 #define PORT_TV_FLAGS_MASK              0xFF
253 #define PORT_TV_FLAGS                   0xC4  // ripped from my BIOS
254                                               // to understand and correct
255
256 #define DVOA_SRCDIM             0x61124
257 #define DVOB_SRCDIM             0x61144
258 #define DVOC_SRCDIM             0x61164
259
260 #define PIPEACONF               0x70008
261 #define PIPEBCONF               0x71008
262 #define PIPECONF_ENABLE                 (1 << 31)
263 #define PIPECONF_DISABLE                0
264 #define PIPECONF_DOUBLE_WIDE            (1 << 30)
265 #define PIPECONF_SINGLE_WIDE            0
266 #define PIPECONF_LOCKED                 (1 << 25)
267 #define PIPECONF_UNLOCKED               0
268 #define PIPECONF_GAMMA                  (1 << 24)
269 #define PIPECONF_PALETTE                0
270
271 #define DISPARB                 0x70030
272 #define DISPARB_AEND_MASK               0x1ff
273 #define DISPARB_AEND_SHIFT              0
274 #define DISPARB_BEND_MASK               0x3ff
275 #define DISPARB_BEND_SHIFT              9
276
277 /* Desktop HW cursor */
278 #define CURSOR_CONTROL          0x70080
279 #define CURSOR_ENABLE                   (1 << 31)
280 #define CURSOR_GAMMA_ENABLE             (1 << 30)
281 #define CURSOR_STRIDE_MASK              (0x3 << 28)
282 #define CURSOR_STRIDE_256               (0x0 << 28)
283 #define CURSOR_STRIDE_512               (0x1 << 28)
284 #define CURSOR_STRIDE_1K                (0x2 << 28)
285 #define CURSOR_STRIDE_2K                (0x3 << 28)
286 #define CURSOR_FORMAT_MASK              (0x7 << 24)
287 #define CURSOR_FORMAT_2C                (0x0 << 24)
288 #define CURSOR_FORMAT_3C                (0x1 << 24)
289 #define CURSOR_FORMAT_4C                (0x2 << 24)
290 #define CURSOR_FORMAT_ARGB              (0x4 << 24)
291 #define CURSOR_FORMAT_XRGB              (0x5 << 24)
292
293 /* Mobile HW cursor (and i810) */
294 #define CURSOR_A_CONTROL        CURSOR_CONTROL
295 #define CURSOR_B_CONTROL        0x700c0
296 #define CURSOR_MODE_MASK                0x27
297 #define CURSOR_MODE_DISABLE             0
298 #define CURSOR_MODE_64_3C               0x04
299 #define CURSOR_MODE_64_4C_AX            0x05
300 #define CURSOR_MODE_64_4C               0x06
301 #define CURSOR_MODE_64_32B_AX           0x07
302 #define CURSOR_MODE_64_ARGB_AX          0x27
303 #define CURSOR_PIPE_SELECT_SHIFT        28
304 #define CURSOR_MOBILE_GAMMA_ENABLE      (1 << 26)
305 #define CURSOR_MEM_TYPE_LOCAL           (1 << 25)
306
307 /* All platforms (desktop has no pipe B) */
308 #define CURSOR_A_BASEADDR       0x70084
309 #define CURSOR_B_BASEADDR       0x700c4
310 #define CURSOR_BASE_MASK                0xffffff00
311
312 #define CURSOR_A_POSITION       0x70088
313 #define CURSOR_B_POSITION       0x700c8
314 #define CURSOR_POS_SIGN                 (1 << 15)
315 #define CURSOR_POS_MASK                 0x7ff
316 #define CURSOR_X_SHIFT                  0
317 #define CURSOR_Y_SHIFT                  16
318
319 #define CURSOR_A_PALETTE0       0x70090
320 #define CURSOR_A_PALETTE1       0x70094
321 #define CURSOR_A_PALETTE2       0x70098
322 #define CURSOR_A_PALETTE3       0x7009c
323 #define CURSOR_B_PALETTE0       0x700d0
324 #define CURSOR_B_PALETTE1       0x700d4
325 #define CURSOR_B_PALETTE2       0x700d8
326 #define CURSOR_B_PALETTE3       0x700dc
327 #define CURSOR_COLOR_MASK                       0xff
328 #define CURSOR_RED_SHIFT                        16
329 #define CURSOR_GREEN_SHIFT                      8
330 #define CURSOR_BLUE_SHIFT                       0
331 #define CURSOR_PALETTE_MASK                     0xffffff
332
333 /* Desktop only */
334 #define CURSOR_SIZE             0x700a0
335 #define CURSOR_SIZE_MASK                0x3ff
336 #define CURSOR_SIZE_H_SHIFT             0
337 #define CURSOR_SIZE_V_SHIFT             12
338
339 #define DSPACNTR                0x70180
340 #define DSPBCNTR                0x71180
341 #define DISPPLANE_PLANE_ENABLE          (1 << 31)
342 #define DISPPLANE_PLANE_DISABLE         0
343 #define DISPPLANE_GAMMA_ENABLE          (1<<30)
344 #define DISPPLANE_GAMMA_DISABLE         0
345 #define DISPPLANE_PIXFORMAT_MASK        (0xf<<26)
346 #define DISPPLANE_8BPP                  (0x2<<26)
347 #define DISPPLANE_15_16BPP              (0x4<<26)
348 #define DISPPLANE_16BPP                 (0x5<<26)
349 #define DISPPLANE_32BPP_NO_ALPHA        (0x6<<26)
350 #define DISPPLANE_32BPP                 (0x7<<26)
351 #define DISPPLANE_STEREO_ENABLE         (1<<25)
352 #define DISPPLANE_STEREO_DISABLE        0
353 #define DISPPLANE_SEL_PIPE_SHIFT        24
354 #define DISPPLANE_SRC_KEY_ENABLE        (1<<22)
355 #define DISPPLANE_SRC_KEY_DISABLE       0
356 #define DISPPLANE_LINE_DOUBLE           (1<<20)
357 #define DISPPLANE_NO_LINE_DOUBLE        0
358 #define DISPPLANE_STEREO_POLARITY_FIRST 0
359 #define DISPPLANE_STEREO_POLARITY_SECOND (1<<18)
360 /* plane B only */
361 #define DISPPLANE_ALPHA_TRANS_ENABLE    (1<<15)
362 #define DISPPLANE_ALPHA_TRANS_DISABLE   0
363 #define DISPPLANE_SPRITE_ABOVE_DISPLAYA 0
364 #define DISPPLANE_SPRITE_ABOVE_OVERLAY  1
365
366 #define DSPABASE                0x70184
367 #define DSPASTRIDE              0x70188
368
369 #define DSPBBASE                0x71184
370 #define DSPBSTRIDE              0x71188
371
372 #define VGACNTRL                0x71400
373 #define VGA_DISABLE                     (1 << 31)
374 #define VGA_ENABLE                      0
375 #define VGA_PIPE_SELECT_SHIFT           29
376 #define VGA_PALETTE_READ_SELECT         23
377 #define VGA_PALETTE_A_WRITE_DISABLE     (1 << 22)
378 #define VGA_PALETTE_B_WRITE_DISABLE     (1 << 21)
379 #define VGA_LEGACY_PALETTE              (1 << 20)
380 #define VGA_6BIT_DAC                    0
381 #define VGA_8BIT_DAC                    (1 << 20)
382
383 #define ADD_ID                  0x71408
384 #define ADD_ID_MASK                     0xff
385
386 /* BIOS scratch area registers (830M and 845G). */
387 #define SWF0                    0x71410
388 #define SWF1                    0x71414
389 #define SWF2                    0x71418
390 #define SWF3                    0x7141c
391 #define SWF4                    0x71420
392 #define SWF5                    0x71424
393 #define SWF6                    0x71428
394
395 /* BIOS scratch area registers (852GM, 855GM, 865G). */
396 #define SWF00                   0x70410
397 #define SWF01                   0x70414
398 #define SWF02                   0x70418
399 #define SWF03                   0x7041c
400 #define SWF04                   0x70420
401 #define SWF05                   0x70424
402 #define SWF06                   0x70428
403
404 #define SWF10                   SWF0
405 #define SWF11                   SWF1
406 #define SWF12                   SWF2
407 #define SWF13                   SWF3
408 #define SWF14                   SWF4
409 #define SWF15                   SWF5
410 #define SWF16                   SWF6
411
412 #define SWF30                   0x72414
413 #define SWF31                   0x72418
414 #define SWF32                   0x7241c
415
416 /* Memory Commands */
417 #define MI_NOOP                 (0x00 << 23)
418 #define MI_NOOP_WRITE_ID                (1 << 22)
419 #define MI_NOOP_ID_MASK                 ((1 << 22) - 1)
420
421 #define MI_FLUSH                (0x04 << 23)
422 #define MI_WRITE_DIRTY_STATE            (1 << 4)
423 #define MI_END_SCENE                    (1 << 3)
424 #define MI_INHIBIT_RENDER_CACHE_FLUSH   (1 << 2)
425 #define MI_INVALIDATE_MAP_CACHE         (1 << 0)
426
427 #define MI_STORE_DWORD_IMM      ((0x20 << 23) | 1)
428
429 /* 2D Commands */
430 #define COLOR_BLT_CMD           ((2 << 29) | (0x40 << 22) | 3)
431 #define XY_COLOR_BLT_CMD        ((2 << 29) | (0x50 << 22) | 4)
432 #define XY_SETUP_CLIP_BLT_CMD   ((2 << 29) | (0x03 << 22) | 1)
433 #define XY_SRC_COPY_BLT_CMD     ((2 << 29) | (0x53 << 22) | 6)
434 #define SRC_COPY_BLT_CMD        ((2 << 29) | (0x43 << 22) | 4)
435 #define XY_MONO_PAT_BLT_CMD     ((2 << 29) | (0x52 << 22) | 7)
436 #define XY_MONO_SRC_BLT_CMD     ((2 << 29) | (0x54 << 22) | 6)
437 #define XY_MONO_SRC_IMM_BLT_CMD ((2 << 29) | (0x71 << 22) | 5)
438 #define TXT_IMM_BLT_CMD         ((2 << 29) | (0x30 << 22) | 2)
439 #define SETUP_BLT_CMD           ((2 << 29) | (0x00 << 22) | 6)
440
441 #define DW_LENGTH_MASK                  0xff
442
443 #define WRITE_ALPHA                     (1 << 21)
444 #define WRITE_RGB                       (1 << 20)
445 #define VERT_SEED                       (3 << 8)
446 #define HORIZ_SEED                      (3 << 12)
447
448 #define COLOR_DEPTH_8                   (0 << 24)
449 #define COLOR_DEPTH_16                  (1 << 24)
450 #define COLOR_DEPTH_32                  (3 << 24)
451
452 #define SRC_ROP_GXCOPY                  0xcc
453 #define SRC_ROP_GXXOR                   0x66
454
455 #define PAT_ROP_GXCOPY                  0xf0
456 #define PAT_ROP_GXXOR                   0x5a
457
458 #define PITCH_SHIFT                     0
459 #define ROP_SHIFT                       16
460 #define WIDTH_SHIFT                     0
461 #define HEIGHT_SHIFT                    16
462
463 /* in bytes */
464 #define MAX_MONO_IMM_SIZE               128
465
466
467 /*** Macros ***/
468
469 /* I/O macros */
470 #define INREG8(addr)          readb((u8 __iomem *)(dinfo->mmio_base + (addr)))
471 #define INREG(addr)           readl((u32 __iomem *)(dinfo->mmio_base + (addr)))
472 #define OUTREG8(addr, val)    writeb((val),(u8 __iomem *)(dinfo->mmio_base + \
473                                                            (addr)))
474 #define OUTREG(addr, val)     writel((val),(u32 __iomem *)(dinfo->mmio_base + \
475                                      (addr)))
476
477 /* Ring buffer macros */
478 #define OUT_RING(n)     do {                                            \
479         writel((n), (u32 __iomem *)(dinfo->ring.virtual + dinfo->ring_tail));\
480         dinfo->ring_tail += 4;                                          \
481         dinfo->ring_tail &= dinfo->ring_tail_mask;                      \
482 } while (0)
483
484 #define START_RING(n)   do {                                            \
485         if (dinfo->ring_space < (n) * 4)                                \
486                 wait_ring(dinfo,(n) * 4);                               \
487         dinfo->ring_space -= (n) * 4;                                   \
488 } while (0)
489
490 #define ADVANCE_RING()  do {                                            \
491         OUTREG(PRI_RING_TAIL, dinfo->ring_tail);                        \
492 } while (0)
493
494 #define DO_RING_IDLE()  do {                                            \
495         u32 head, tail;                                                 \
496         do {                                                            \
497                 head = INREG(PRI_RING_HEAD) & RING_HEAD_MASK;           \
498                 tail = INREG(PRI_RING_TAIL) & RING_TAIL_MASK;           \
499                 udelay(10);                                             \
500         } while (head != tail);                                         \
501 } while (0)
502
503
504 /* function protoypes */
505 extern int intelfbhw_get_chipset(struct pci_dev *pdev, struct intelfb_info *dinfo);
506 extern int intelfbhw_get_memory(struct pci_dev *pdev, int *aperture_size,
507                                 int *stolen_size);
508 extern int intelfbhw_check_non_crt(struct intelfb_info *dinfo);
509 extern const char *intelfbhw_dvo_to_string(int dvo);
510 extern int intelfbhw_validate_mode(struct intelfb_info *dinfo,
511                                    struct fb_var_screeninfo *var);
512 extern int intelfbhw_pan_display(struct fb_var_screeninfo *var,
513                                  struct fb_info *info);
514 extern void intelfbhw_do_blank(int blank, struct fb_info *info);
515 extern void intelfbhw_setcolreg(struct intelfb_info *dinfo, unsigned regno,
516                                 unsigned red, unsigned green, unsigned blue,
517                                 unsigned transp);
518 extern int intelfbhw_read_hw_state(struct intelfb_info *dinfo,
519                                    struct intelfb_hwstate *hw, int flag);
520 extern void intelfbhw_print_hw_state(struct intelfb_info *dinfo,
521                                      struct intelfb_hwstate *hw);
522 extern int intelfbhw_mode_to_hw(struct intelfb_info *dinfo,
523                                 struct intelfb_hwstate *hw,
524                                 struct fb_var_screeninfo *var);
525 extern int intelfbhw_program_mode(struct intelfb_info *dinfo,
526                                   const struct intelfb_hwstate *hw, int blank);
527 extern void intelfbhw_do_sync(struct intelfb_info *dinfo);
528 extern void intelfbhw_2d_stop(struct intelfb_info *dinfo);
529 extern void intelfbhw_2d_start(struct intelfb_info *dinfo);
530 extern void intelfbhw_do_fillrect(struct intelfb_info *dinfo, u32 x, u32 y,
531                                   u32 w, u32 h, u32 color, u32 pitch, u32 bpp,
532                                   u32 rop);
533 extern void intelfbhw_do_bitblt(struct intelfb_info *dinfo, u32 curx, u32 cury,
534                                 u32 dstx, u32 dsty, u32 w, u32 h, u32 pitch,
535                                 u32 bpp);
536 extern int intelfbhw_do_drawglyph(struct intelfb_info *dinfo, u32 fg, u32 bg,
537                                   u32 w, u32 h, const u8* cdat, u32 x, u32 y,
538                                   u32 pitch, u32 bpp);
539 extern void intelfbhw_cursor_init(struct intelfb_info *dinfo);
540 extern void intelfbhw_cursor_hide(struct intelfb_info *dinfo);
541 extern void intelfbhw_cursor_show(struct intelfb_info *dinfo);
542 extern void intelfbhw_cursor_setpos(struct intelfb_info *dinfo, int x, int y);
543 extern void intelfbhw_cursor_setcolor(struct intelfb_info *dinfo, u32 bg,
544                                       u32 fg);
545 extern void intelfbhw_cursor_load(struct intelfb_info *dinfo, int width,
546                                   int height, u8 *data);
547 extern void intelfbhw_cursor_reset(struct intelfb_info *dinfo);
548
549 #endif /* _INTELFBHW_H */