release/src-rt-6.x.4708/linux/linux-2.6.36/drivers/gpu/drm/nouveau/nouveau_hw.h

   1 /*
   2  * Copyright 2008 Stuart Bennett
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  18  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
  19  * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  20  * SOFTWARE.
  21  */
  22
  23 #ifndef __NOUVEAU_HW_H__
  24 #define __NOUVEAU_HW_H__
  25
  26 #include "drmP.h"
  27 #include "nouveau_drv.h"
  28
  29 #define MASK(field) ( \
  30         (0xffffffff >> (31 - ((1 ? field) - (0 ? field)))) << (0 ? field))
  31
  32 #define XLATE(src, srclowbit, outfield) ( \
  33         (((src) >> (srclowbit)) << (0 ? outfield)) & MASK(outfield))
  34
  35 void NVWriteVgaSeq(struct drm_device *, int head, uint8_t index, uint8_t value);
  36 uint8_t NVReadVgaSeq(struct drm_device *, int head, uint8_t index);
  37 void NVWriteVgaGr(struct drm_device *, int head, uint8_t index, uint8_t value);
  38 uint8_t NVReadVgaGr(struct drm_device *, int head, uint8_t index);
  39 void NVSetOwner(struct drm_device *, int owner);
  40 void NVBlankScreen(struct drm_device *, int head, bool blank);
  41 void nouveau_hw_setpll(struct drm_device *, uint32_t reg1,
  42                        struct nouveau_pll_vals *pv);
  43 int nouveau_hw_get_pllvals(struct drm_device *, enum pll_types plltype,
  44                            struct nouveau_pll_vals *pllvals);
  45 int nouveau_hw_pllvals_to_clk(struct nouveau_pll_vals *pllvals);
  46 int nouveau_hw_get_clock(struct drm_device *, enum pll_types plltype);
  47 void nouveau_hw_save_vga_fonts(struct drm_device *, bool save);
  48 void nouveau_hw_save_state(struct drm_device *, int head,
  49                            struct nv04_mode_state *state);
  50 void nouveau_hw_load_state(struct drm_device *, int head,
  51                            struct nv04_mode_state *state);
  52 void nouveau_hw_load_state_palette(struct drm_device *, int head,
  53                                    struct nv04_mode_state *state);
  54
  55 /* nouveau_calc.c */
  56 extern void nouveau_calc_arb(struct drm_device *, int vclk, int bpp,
  57                              int *burst, int *lwm);
  58 extern int nouveau_calc_pll_mnp(struct drm_device *, struct pll_lims *pll_lim,
  59                                 int clk, struct nouveau_pll_vals *pv);
  60
  61 static inline uint32_t
  62 nvReadMC(struct drm_device *dev, uint32_t reg)
  63 {
  64         uint32_t val = nv_rd32(dev, reg);
  65         NV_REG_DEBUG(MC, dev, "reg %08x val %08x\n", reg, val);
  66         return val;
  67 }
  68
  69 static inline void
  70 nvWriteMC(struct drm_device *dev, uint32_t reg, uint32_t val)
  71 {
  72         NV_REG_DEBUG(MC, dev, "reg %08x val %08x\n", reg, val);
  73         nv_wr32(dev, reg, val);
  74 }
  75
  76 static inline uint32_t
  77 nvReadVIDEO(struct drm_device *dev, uint32_t reg)
  78 {
  79         uint32_t val = nv_rd32(dev, reg);
  80         NV_REG_DEBUG(VIDEO, dev, "reg %08x val %08x\n", reg, val);
  81         return val;
  82 }
  83
  84 static inline void
  85 nvWriteVIDEO(struct drm_device *dev, uint32_t reg, uint32_t val)
  86 {
  87         NV_REG_DEBUG(VIDEO, dev, "reg %08x val %08x\n", reg, val);
  88         nv_wr32(dev, reg, val);
  89 }
  90
  91 static inline uint32_t
  92 nvReadFB(struct drm_device *dev, uint32_t reg)
  93 {
  94         uint32_t val = nv_rd32(dev, reg);
  95         NV_REG_DEBUG(FB, dev, "reg %08x val %08x\n", reg, val);
  96         return val;
  97 }
  98
  99 static inline void
 100 nvWriteFB(struct drm_device *dev, uint32_t reg, uint32_t val)
 101 {
 102         NV_REG_DEBUG(FB, dev, "reg %08x val %08x\n", reg, val);
 103         nv_wr32(dev, reg, val);
 104 }
 105
 106 static inline uint32_t
 107 nvReadEXTDEV(struct drm_device *dev, uint32_t reg)
 108 {
 109         uint32_t val = nv_rd32(dev, reg);
 110         NV_REG_DEBUG(EXTDEV, dev, "reg %08x val %08x\n", reg, val);
 111         return val;
 112 }
 113
 114 static inline void
 115 nvWriteEXTDEV(struct drm_device *dev, uint32_t reg, uint32_t val)
 116 {
 117         NV_REG_DEBUG(EXTDEV, dev, "reg %08x val %08x\n", reg, val);
 118         nv_wr32(dev, reg, val);
 119 }
 120
 121 static inline uint32_t NVReadCRTC(struct drm_device *dev,
 122                                         int head, uint32_t reg)
 123 {
 124         uint32_t val;
 125         if (head)
 126                 reg += NV_PCRTC0_SIZE;
 127         val = nv_rd32(dev, reg);
 128         NV_REG_DEBUG(CRTC, dev, "head %d reg %08x val %08x\n", head, reg, val);
 129         return val;
 130 }
 131
 132 static inline void NVWriteCRTC(struct drm_device *dev,
 133                                         int head, uint32_t reg, uint32_t val)
 134 {
 135         if (head)
 136                 reg += NV_PCRTC0_SIZE;
 137         NV_REG_DEBUG(CRTC, dev, "head %d reg %08x val %08x\n", head, reg, val);
 138         nv_wr32(dev, reg, val);
 139 }
 140
 141 static inline uint32_t NVReadRAMDAC(struct drm_device *dev,
 142                                         int head, uint32_t reg)
 143 {
 144         uint32_t val;
 145         if (head)
 146                 reg += NV_PRAMDAC0_SIZE;
 147         val = nv_rd32(dev, reg);
 148         NV_REG_DEBUG(RAMDAC, dev, "head %d reg %08x val %08x\n",
 149                                                         head, reg, val);
 150         return val;
 151 }
 152
 153 static inline void NVWriteRAMDAC(struct drm_device *dev,
 154                                         int head, uint32_t reg, uint32_t val)
 155 {
 156         if (head)
 157                 reg += NV_PRAMDAC0_SIZE;
 158         NV_REG_DEBUG(RAMDAC, dev, "head %d reg %08x val %08x\n",
 159                                                         head, reg, val);
 160         nv_wr32(dev, reg, val);
 161 }
 162
 163 static inline uint8_t nv_read_tmds(struct drm_device *dev,
 164                                         int or, int dl, uint8_t address)
 165 {
 166         int ramdac = (or & OUTPUT_C) >> 2;
 167
 168         NVWriteRAMDAC(dev, ramdac, NV_PRAMDAC_FP_TMDS_CONTROL + dl * 8,
 169         NV_PRAMDAC_FP_TMDS_CONTROL_WRITE_DISABLE | address);
 170         return NVReadRAMDAC(dev, ramdac, NV_PRAMDAC_FP_TMDS_DATA + dl * 8);
 171 }
 172
 173 static inline void nv_write_tmds(struct drm_device *dev,
 174                                         int or, int dl, uint8_t address,
 175                                         uint8_t data)
 176 {
 177         int ramdac = (or & OUTPUT_C) >> 2;
 178
 179         NVWriteRAMDAC(dev, ramdac, NV_PRAMDAC_FP_TMDS_DATA + dl * 8, data);
 180         NVWriteRAMDAC(dev, ramdac, NV_PRAMDAC_FP_TMDS_CONTROL + dl * 8, address);
 181 }
 182
 183 static inline void NVWriteVgaCrtc(struct drm_device *dev,
 184                                         int head, uint8_t index, uint8_t value)
 185 {
 186         NV_REG_DEBUG(VGACRTC, dev, "head %d index 0x%02x data 0x%02x\n",
 187                                                         head, index, value);
 188         nv_wr08(dev, NV_PRMCIO_CRX__COLOR + head * NV_PRMCIO_SIZE, index);
 189         nv_wr08(dev, NV_PRMCIO_CR__COLOR + head * NV_PRMCIO_SIZE, value);
 190 }
 191
 192 static inline uint8_t NVReadVgaCrtc(struct drm_device *dev,
 193                                         int head, uint8_t index)
 194 {
 195         uint8_t val;
 196         nv_wr08(dev, NV_PRMCIO_CRX__COLOR + head * NV_PRMCIO_SIZE, index);
 197         val = nv_rd08(dev, NV_PRMCIO_CR__COLOR + head * NV_PRMCIO_SIZE);
 198         NV_REG_DEBUG(VGACRTC, dev, "head %d index 0x%02x data 0x%02x\n",
 199                                                         head, index, val);
 200         return val;
 201 }
 202
 203 /* CR57 and CR58 are a fun pair of regs. CR57 provides an index (0-0xf) for CR58
 204  * I suspect they in fact do nothing, but are merely a way to carry useful
 205  * per-head variables around
 206  *
 207  * Known uses:
 208  * CR57         CR58
 209  * 0x00         index to the appropriate dcb entry (or 7f for inactive)
 210  * 0x02         dcb entry's "or" value (or 00 for inactive)
 211  * 0x03         bit0 set for dual link (LVDS, possibly elsewhere too)
 212  * 0x08 or 0x09 pxclk in MHz
 213  * 0x0f         laptop panel info -     low nibble for PEXTDEV_BOOT_0 strap
 214  *                                      high nibble for xlat strap value
 215  */
 216
 217 static inline void
 218 NVWriteVgaCrtc5758(struct drm_device *dev, int head, uint8_t index, uint8_t value)
 219 {
 220         NVWriteVgaCrtc(dev, head, NV_CIO_CRE_57, index);
 221         NVWriteVgaCrtc(dev, head, NV_CIO_CRE_58, value);
 222 }
 223
 224 static inline uint8_t NVReadVgaCrtc5758(struct drm_device *dev, int head, uint8_t index)
 225 {
 226         NVWriteVgaCrtc(dev, head, NV_CIO_CRE_57, index);
 227         return NVReadVgaCrtc(dev, head, NV_CIO_CRE_58);
 228 }
 229
 230 static inline uint8_t NVReadPRMVIO(struct drm_device *dev,
 231                                         int head, uint32_t reg)
 232 {
 233         struct drm_nouveau_private *dev_priv = dev->dev_private;
 234         uint8_t val;
 235
 236         /* Only NV4x have two pvio ranges; other twoHeads cards MUST call
 237          * NVSetOwner for the relevant head to be programmed */
 238         if (head && dev_priv->card_type == NV_40)
 239                 reg += NV_PRMVIO_SIZE;
 240
 241         val = nv_rd08(dev, reg);
 242         NV_REG_DEBUG(RMVIO, dev, "head %d reg %08x val %02x\n", head, reg, val);
 243         return val;
 244 }
 245
 246 static inline void NVWritePRMVIO(struct drm_device *dev,
 247                                         int head, uint32_t reg, uint8_t value)
 248 {
 249         struct drm_nouveau_private *dev_priv = dev->dev_private;
 250
 251         /* Only NV4x have two pvio ranges; other twoHeads cards MUST call
 252          * NVSetOwner for the relevant head to be programmed */
 253         if (head && dev_priv->card_type == NV_40)
 254                 reg += NV_PRMVIO_SIZE;
 255
 256         NV_REG_DEBUG(RMVIO, dev, "head %d reg %08x val %02x\n",
 257                                                 head, reg, value);
 258         nv_wr08(dev, reg, value);
 259 }
 260
 261 static inline void NVSetEnablePalette(struct drm_device *dev, int head, bool enable)
 262 {
 263         nv_rd08(dev, NV_PRMCIO_INP0__COLOR + head * NV_PRMCIO_SIZE);
 264         nv_wr08(dev, NV_PRMCIO_ARX + head * NV_PRMCIO_SIZE, enable ? 0 : 0x20);
 265 }
 266
 267 static inline bool NVGetEnablePalette(struct drm_device *dev, int head)
 268 {
 269         nv_rd08(dev, NV_PRMCIO_INP0__COLOR + head * NV_PRMCIO_SIZE);
 270         return !(nv_rd08(dev, NV_PRMCIO_ARX + head * NV_PRMCIO_SIZE) & 0x20);
 271 }
 272
 273 static inline void NVWriteVgaAttr(struct drm_device *dev,
 274                                         int head, uint8_t index, uint8_t value)
 275 {
 276         if (NVGetEnablePalette(dev, head))
 277                 index &= ~0x20;
 278         else
 279                 index |= 0x20;
 280
 281         nv_rd08(dev, NV_PRMCIO_INP0__COLOR + head * NV_PRMCIO_SIZE);
 282         NV_REG_DEBUG(VGAATTR, dev, "head %d index 0x%02x data 0x%02x\n",
 283                                                         head, index, value);
 284         nv_wr08(dev, NV_PRMCIO_ARX + head * NV_PRMCIO_SIZE, index);
 285         nv_wr08(dev, NV_PRMCIO_AR__WRITE + head * NV_PRMCIO_SIZE, value);
 286 }
 287
 288 static inline uint8_t NVReadVgaAttr(struct drm_device *dev,
 289                                         int head, uint8_t index)
 290 {
 291         uint8_t val;
 292         if (NVGetEnablePalette(dev, head))
 293                 index &= ~0x20;
 294         else
 295                 index |= 0x20;
 296
 297         nv_rd08(dev, NV_PRMCIO_INP0__COLOR + head * NV_PRMCIO_SIZE);
 298         nv_wr08(dev, NV_PRMCIO_ARX + head * NV_PRMCIO_SIZE, index);
 299         val = nv_rd08(dev, NV_PRMCIO_AR__READ + head * NV_PRMCIO_SIZE);
 300         NV_REG_DEBUG(VGAATTR, dev, "head %d index 0x%02x data 0x%02x\n",
 301                                                         head, index, val);
 302         return val;
 303 }
 304
 305 static inline void NVVgaSeqReset(struct drm_device *dev, int head, bool start)
 306 {
 307         NVWriteVgaSeq(dev, head, NV_VIO_SR_RESET_INDEX, start ? 0x1 : 0x3);
 308 }
 309
 310 static inline void NVVgaProtect(struct drm_device *dev, int head, bool protect)
 311 {
 312         uint8_t seq1 = NVReadVgaSeq(dev, head, NV_VIO_SR_CLOCK_INDEX);
 313
 314         if (protect) {
 315                 NVVgaSeqReset(dev, head, true);
 316                 NVWriteVgaSeq(dev, head, NV_VIO_SR_CLOCK_INDEX, seq1 | 0x20);
 317         } else {
 318                 /* Reenable sequencer, then turn on screen */
 319                 NVWriteVgaSeq(dev, head, NV_VIO_SR_CLOCK_INDEX, seq1 & ~0x20);   /* reenable display */
 320                 NVVgaSeqReset(dev, head, false);
 321         }
 322         NVSetEnablePalette(dev, head, protect);
 323 }
 324
 325 static inline bool
 326 nv_heads_tied(struct drm_device *dev)
 327 {
 328         struct drm_nouveau_private *dev_priv = dev->dev_private;
 329
 330         if (dev_priv->chipset == 0x11)
 331                 return !!(nvReadMC(dev, NV_PBUS_DEBUG_1) & (1 << 28));
 332
 333         return NVReadVgaCrtc(dev, 0, NV_CIO_CRE_44) & 0x4;
 334 }
 335
 336 /* makes cr0-7 on the specified head read-only */
 337 static inline bool
 338 nv_lock_vga_crtc_base(struct drm_device *dev, int head, bool lock)
 339 {
 340         uint8_t cr11 = NVReadVgaCrtc(dev, head, NV_CIO_CR_VRE_INDEX);
 341         bool waslocked = cr11 & 0x80;
 342
 343         if (lock)
 344                 cr11 |= 0x80;
 345         else
 346                 cr11 &= ~0x80;
 347         NVWriteVgaCrtc(dev, head, NV_CIO_CR_VRE_INDEX, cr11);
 348
 349         return waslocked;
 350 }
 351
 352 static inline void
 353 nv_lock_vga_crtc_shadow(struct drm_device *dev, int head, int lock)
 354 {
 355         /* shadow lock: connects 0x60?3d? regs to "real" 0x3d? regs
 356          * bit7: unlocks HDT, HBS, HBE, HRS, HRE, HEB
 357          * bit6: seems to have some effect on CR09 (double scan, VBS_9)
 358          * bit5: unlocks HDE
 359          * bit4: unlocks VDE
 360          * bit3: unlocks VDT, OVL, VRS, ?VRE?, VBS, VBE, LSR, EBR
 361          * bit2: same as bit 1 of 0x60?804
 362          * bit0: same as bit 0 of 0x60?804
 363          */
 364
 365         uint8_t cr21 = lock;
 366
 367         if (lock < 0)
 368                 /* 0xfa is generic "unlock all" mask */
 369                 cr21 = NVReadVgaCrtc(dev, head, NV_CIO_CRE_21) | 0xfa;
 370
 371         NVWriteVgaCrtc(dev, head, NV_CIO_CRE_21, cr21);
 372 }
 373
 374 /* renders the extended crtc regs (cr19+) on all crtcs impervious:
 375  * immutable and unreadable
 376  */
 377 static inline bool
 378 NVLockVgaCrtcs(struct drm_device *dev, bool lock)
 379 {
 380         struct drm_nouveau_private *dev_priv = dev->dev_private;
 381         bool waslocked = !NVReadVgaCrtc(dev, 0, NV_CIO_SR_LOCK_INDEX);
 382
 383         NVWriteVgaCrtc(dev, 0, NV_CIO_SR_LOCK_INDEX,
 384                        lock ? NV_CIO_SR_LOCK_VALUE : NV_CIO_SR_UNLOCK_RW_VALUE);
 385         /* NV11 has independently lockable extended crtcs, except when tied */
 386         if (dev_priv->chipset == 0x11 && !nv_heads_tied(dev))
 387                 NVWriteVgaCrtc(dev, 1, NV_CIO_SR_LOCK_INDEX,
 388                                lock ? NV_CIO_SR_LOCK_VALUE :
 389                                       NV_CIO_SR_UNLOCK_RW_VALUE);
 390
 391         return waslocked;
 392 }
 393
 394 /* nv04 cursor max dimensions of 32x32 (A1R5G5B5) */
 395 #define NV04_CURSOR_SIZE 32
 396 /* limit nv10 cursors to 64x64 (ARGB8) (we could go to 64x255) */
 397 #define NV10_CURSOR_SIZE 64
 398
 399 static inline int nv_cursor_width(struct drm_device *dev)
 400 {
 401         struct drm_nouveau_private *dev_priv = dev->dev_private;
 402
 403         return dev_priv->card_type >= NV_10 ? NV10_CURSOR_SIZE : NV04_CURSOR_SIZE;
 404 }
 405
 406 static inline void
 407 nv_fix_nv40_hw_cursor(struct drm_device *dev, int head)
 408 {
 409         /* on some nv40 (such as the "true" (in the NV_PFB_BOOT_0 sense) nv40,
 410          * the gf6800gt) a hardware bug requires a write to PRAMDAC_CURSOR_POS
 411          * for changes to the CRTC CURCTL regs to take effect, whether changing
 412          * the pixmap location, or just showing/hiding the cursor
 413          */
 414         uint32_t curpos = NVReadRAMDAC(dev, head, NV_PRAMDAC_CU_START_POS);
 415         NVWriteRAMDAC(dev, head, NV_PRAMDAC_CU_START_POS, curpos);
 416 }
 417
 418 static inline void
 419 nv_show_cursor(struct drm_device *dev, int head, bool show)
 420 {
 421         struct drm_nouveau_private *dev_priv = dev->dev_private;
 422         uint8_t *curctl1 =
 423                 &dev_priv->mode_reg.crtc_reg[head].CRTC[NV_CIO_CRE_HCUR_ADDR1_INDEX];
 424
 425         if (show)
 426                 *curctl1 |= MASK(NV_CIO_CRE_HCUR_ADDR1_ENABLE);
 427         else
 428                 *curctl1 &= ~MASK(NV_CIO_CRE_HCUR_ADDR1_ENABLE);
 429         NVWriteVgaCrtc(dev, head, NV_CIO_CRE_HCUR_ADDR1_INDEX, *curctl1);
 430
 431         if (dev_priv->card_type == NV_40)
 432                 nv_fix_nv40_hw_cursor(dev, head);
 433 }
 434
 435 static inline uint32_t
 436 nv_pitch_align(struct drm_device *dev, uint32_t width, int bpp)
 437 {
 438         struct drm_nouveau_private *dev_priv = dev->dev_private;
 439         int mask;
 440
 441         if (bpp == 15)
 442                 bpp = 16;
 443         if (bpp == 24)
 444                 bpp = 8;
 445
 446         /* Alignment requirements taken from the Haiku driver */
 447         if (dev_priv->card_type == NV_04)
 448                 mask = 128 / bpp - 1;
 449         else
 450                 mask = 512 / bpp - 1;
 451
 452         return (width + mask) & ~mask;
 453 }
 454
 455 #endif  /* __NOUVEAU_HW_H__ */