Duncan Laurie | e3f75f8 | 2013-10-28 15:49:34 -0700 | [diff] [blame] | 1 | /* |
| 2 | * This file is part of the coreboot project. |
| 3 | * |
| 4 | * Copyright 2013 Google Inc. |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; version 2 of the License. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software |
| 17 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 18 | */ |
| 19 | |
| 20 | #include <arch/io.h> |
| 21 | #include <console/console.h> |
| 22 | #include <delay.h> |
| 23 | #include <device/device.h> |
| 24 | #include <device/pci.h> |
| 25 | #include <device/pci_ids.h> |
| 26 | |
| 27 | #include <baytrail/gfx.h> |
| 28 | #include <baytrail/iosf.h> |
| 29 | #include <baytrail/pci_devs.h> |
| 30 | #include <baytrail/ramstage.h> |
| 31 | |
| 32 | struct gt_reg { |
| 33 | u32 reg; |
| 34 | u32 andmask; |
| 35 | u32 ormask; |
| 36 | }; |
| 37 | |
| 38 | static const struct gt_reg gfx_powermeter_weights[] = { |
| 39 | /* SET1 */ |
| 40 | { 0xA800, 0xFFFFFFFF, 0x00000000 }, |
| 41 | { 0xA804, 0xFFFFFFFF, 0x00000000 }, |
| 42 | { 0xA808, 0xFFFFFFFF, 0x0000ff0A }, |
| 43 | { 0xA80C, 0xFFFFFFFF, 0x1D000000 }, |
| 44 | { 0xA810, 0xFFFFFFFF, 0xAC004900 }, |
| 45 | { 0xA814, 0xFFFFFFFF, 0x000F0000 }, |
| 46 | { 0xA818, 0xFFFFFFFF, 0x5A000000 }, |
| 47 | { 0xA81C, 0xFFFFFFFF, 0x2600001F }, |
| 48 | { 0xA820, 0xFFFFFFFF, 0x00090000 }, |
| 49 | { 0xA824, 0xFFFFFFFF, 0x2000ff00 }, |
| 50 | { 0xA828, 0xFFFFFFFF, 0xff090016 }, |
| 51 | { 0xA82C, 0xFFFFFFFF, 0x00000000 }, |
| 52 | { 0xA830, 0xFFFFFFFF, 0x00000100 }, |
| 53 | { 0xA834, 0xFFFFFFFF, 0x00A00F51 }, |
| 54 | { 0xA838, 0xFFFFFFFF, 0x000B0000 }, |
| 55 | { 0xA83C, 0xFFFFFFFF, 0xcb7D3307 }, |
| 56 | { 0xA840, 0xFFFFFFFF, 0x003C0000 }, |
| 57 | { 0xA844, 0xFFFFFFFF, 0xFFFF0000 }, |
| 58 | { 0xA848, 0xFFFFFFFF, 0x00220000 }, |
| 59 | { 0xA84c, 0xFFFFFFFF, 0x43000000 }, |
| 60 | { 0xA850, 0xFFFFFFFF, 0x00000800 }, |
| 61 | { 0xA854, 0xFFFFFFFF, 0x00000F00 }, |
| 62 | { 0xA858, 0xFFFFFFFF, 0x00000021 }, |
| 63 | { 0xA85c, 0xFFFFFFFF, 0x00000000 }, |
| 64 | { 0xA860, 0xFFFFFFFF, 0x00190000 }, |
| 65 | { 0xAA80, 0xFFFFFFFF, 0x00FF00FF }, |
| 66 | { 0xAA84, 0xFFFFFFFF, 0x00000000 }, |
| 67 | { 0x1300A4, 0xFFFFFFFF, 0x00000000 }, |
| 68 | |
| 69 | /* SET2 */ |
| 70 | { 0xA900, 0xFFFFFFFF, 0x00000000 }, |
| 71 | { 0xA904, 0xFFFFFFFF, 0x00000000 }, |
| 72 | { 0xA908, 0xFFFFFFFF, 0x00000000 }, |
| 73 | { 0xa90c, 0xFFFFFFFF, 0x1D000000 }, |
| 74 | { 0xa910, 0xFFFFFFFF, 0xAC005000 }, |
| 75 | { 0xa914, 0xFFFFFFFF, 0x000F0000 }, |
| 76 | { 0xa918, 0xFFFFFFFF, 0x5A000000 }, |
| 77 | { 0xa91c, 0xFFFFFFFF, 0x2600001F }, |
| 78 | { 0xa920, 0xFFFFFFFF, 0x00090000 }, |
| 79 | { 0xa924, 0xFFFFFFFF, 0x2000ff00 }, |
| 80 | { 0xa928, 0xFFFFFFFF, 0xff090016 }, |
| 81 | { 0xa92c, 0xFFFFFFFF, 0x00000000 }, |
| 82 | { 0xa930, 0xFFFFFFFF, 0x00000100 }, |
| 83 | { 0xa934, 0xFFFFFFFF, 0x00A00F51 }, |
| 84 | { 0xa938, 0xFFFFFFFF, 0x000B0000 }, |
| 85 | { 0xA93C, 0xFFFFFFFF, 0xcb7D3307 }, |
| 86 | { 0xA940, 0xFFFFFFFF, 0x003C0000 }, |
| 87 | { 0xA944, 0xFFFFFFFF, 0xFFFF0000 }, |
| 88 | { 0xA948, 0xFFFFFFFF, 0x00220000 }, |
| 89 | { 0xA94C, 0xFFFFFFFF, 0x43000000 }, |
| 90 | { 0xA950, 0xFFFFFFFF, 0x00000800 }, |
| 91 | { 0xA954, 0xFFFFFFFF, 0x00000000 }, |
| 92 | { 0xA960, 0xFFFFFFFF, 0x00000000 }, |
| 93 | |
| 94 | /* SET3 */ |
| 95 | { 0xaa3c, 0xFFFFFFFF, 0x00000000 }, |
| 96 | { 0xaa54, 0xFFFFFFFF, 0x00000000 }, |
| 97 | { 0xaa60, 0xFFFFFFFF, 0x00000000 }, |
| 98 | |
| 99 | /* Enable PowerMeter Counters */ |
| 100 | { 0xA248, 0xFFFFFFFF, 0x00000058 }, |
| 101 | |
| 102 | { 0 } |
| 103 | }; |
| 104 | |
| 105 | static const struct gt_reg gfx_rc6_registers[] = { |
| 106 | { 0xA090, 0xFFFFFFFF, 0x00000000 }, |
| 107 | |
| 108 | /* RC1e - RC6/6p - RC6pp Wake Rate Limits */ |
| 109 | { 0xA09C, 0xFFFFFFFF, 0x00280000 }, |
| 110 | { 0xA0A8, 0xFFFFFFFF, 0x0001E848 }, |
| 111 | { 0xA0AC, 0xFFFFFFFF, 0x00000019 }, |
| 112 | |
| 113 | /* RC Sleep / RCx Thresholds */ |
| 114 | { 0xA0B0, 0xFFFFFFFF, 0x00000000 }, |
| 115 | { 0xA0B8, 0xFFFFFFFF, 0x00000557 }, |
| 116 | |
| 117 | { 0 } |
| 118 | }; |
| 119 | |
| 120 | static const struct gt_reg gfx_turbo_registers[] = { |
| 121 | /* Render/Video/Blitter Idle Max Count */ |
| 122 | { 0x2054, 0xFFFFFFFF, 0x0000000A }, |
| 123 | { 0x12054, 0xFFFFFFFF, 0x0000000A }, |
| 124 | { 0x22054, 0xFFFFFFFF, 0x0000000A }, |
| 125 | |
| 126 | /* RP Down Timeout */ |
| 127 | { 0xA010, 0xFFFFFFFF, 0x000F4240 }, |
| 128 | |
| 129 | { 0 } |
| 130 | }; |
| 131 | |
| 132 | static const struct gt_reg gfx_turbo_ctl_registers[] = { |
| 133 | /* RP Up/Down Threshold */ |
| 134 | { 0xA02C, 0xFFFFFFFF, 0x0000E8E8 }, |
| 135 | { 0xA030, 0xFFFFFFFF, 0x0003BD08 }, |
| 136 | |
| 137 | /* RP Up/Down EI */ |
| 138 | { 0xA068, 0xFFFFFFFF, 0x000101D0 }, |
| 139 | { 0xA06C, 0xFFFFFFFF, 0x00055730 }, |
| 140 | |
| 141 | { 0 } |
| 142 | }; |
| 143 | |
| 144 | static struct resource *gtt_res = NULL; |
| 145 | |
| 146 | static inline unsigned long gtt_read(unsigned long reg) |
| 147 | { |
| 148 | u32 val; |
| 149 | val = read32(gtt_res->base + reg); |
| 150 | return val; |
| 151 | |
| 152 | } |
| 153 | |
| 154 | static inline void gtt_write(unsigned long reg, unsigned long data) |
| 155 | { |
| 156 | write32(gtt_res->base + reg, data); |
| 157 | } |
| 158 | |
| 159 | static inline void gtt_rmw(u32 reg, u32 andmask, u32 ormask) |
| 160 | { |
| 161 | u32 val = gtt_read(reg); |
| 162 | val &= andmask; |
| 163 | val |= ormask; |
| 164 | gtt_write(reg, val); |
| 165 | } |
| 166 | |
| 167 | static void gtt_write_regs(const struct gt_reg *gt) |
| 168 | { |
| 169 | for (; gt && gt->reg; gt++) |
| 170 | gtt_rmw(gt->reg, gt->andmask, gt->ormask); |
| 171 | } |
| 172 | |
| 173 | #define GFX_POLL_RETRY 10000 |
| 174 | |
| 175 | static int gtt_poll(u32 reg, u32 mask, u32 value) |
| 176 | { |
| 177 | unsigned try = GFX_POLL_RETRY; |
| 178 | u32 data; |
| 179 | |
| 180 | while (try--) { |
| 181 | data = gtt_read(reg); |
| 182 | if ((data & mask) == value) |
| 183 | return 1; |
| 184 | udelay(100); |
| 185 | } |
| 186 | |
| 187 | printk(BIOS_ERR, "GTT timeout\n"); |
| 188 | return 0; |
| 189 | } |
| 190 | |
| 191 | static int gfx_poll_power_gate(u32 mask, u32 value) |
| 192 | { |
| 193 | unsigned try = GFX_POLL_RETRY; |
| 194 | u32 data; |
| 195 | |
| 196 | while (try--) { |
| 197 | data = iosf_punit_read(PUNIT_PWRGT_STATUS); |
| 198 | if ((data & mask) == value) |
| 199 | return 1; |
| 200 | udelay(100); |
| 201 | } |
| 202 | |
| 203 | printk(BIOS_ERR, "Power Gate timeout\n"); |
| 204 | return 0; |
| 205 | } |
| 206 | |
| 207 | /* |
| 208 | * Lock Power Context Base Register to point to a 24KB block |
| 209 | * of memory in GSM. Power context save data is stored here. |
| 210 | */ |
| 211 | static void gfx_lock_pcbase(device_t dev) |
| 212 | { |
| 213 | const u16 gms_size_map[17] = { 0,32,64,96,128,160,192,224,256, |
| 214 | 288,320,352,384,416,448,480,512 }; |
| 215 | u32 pcsize = 24 << 10; /* 24KB */ |
| 216 | u32 wopcmsz = 0x100000; /* PAVP offset */ |
| 217 | u32 gms, gmsize, pcbase; |
| 218 | |
| 219 | gms = pci_read_config32(dev, GGC) & GGC_GSM_SIZE_MASK; |
| 220 | gms >>= 3; |
| 221 | if (gms > sizeof(gms_size_map)) |
| 222 | return; |
| 223 | gmsize = gms_size_map[gms]; |
| 224 | |
| 225 | /* PcBase = BDSM + GMS Size - WOPCMSZ - PowerContextSize */ |
| 226 | pcbase = pci_read_config32(dev, GSM_BASE) & 0xfff00000; |
| 227 | pcbase += (gmsize-1) * wopcmsz - pcsize; |
| 228 | pcbase |= 1; /* Lock */ |
| 229 | |
| 230 | gtt_write(0x182120, pcbase); |
| 231 | } |
| 232 | |
| 233 | static void gfx_pm_init(device_t dev) |
| 234 | { |
| 235 | printk(BIOS_INFO, "GFX: Power Management Init\n"); |
| 236 | |
| 237 | /* |
| 238 | * Allow-Wake render/media wells. |
| 239 | * Used by PUNIT as part of S0IX save/restore. |
| 240 | */ |
| 241 | gtt_rmw(0x130090, ~1, 1); |
| 242 | if (!gtt_poll(0x130094, 1, 1)) { |
| 243 | printk(BIOS_ERR, "gfx_pm_init: Unable to allow-wake\n"); |
| 244 | return; |
| 245 | } |
| 246 | |
| 247 | /* Render Force-Wake */ |
| 248 | gtt_write(0x1300B0, 0x80008000); |
| 249 | if (!gtt_poll(0x1300B4, 0x8000, 0x8000)) { |
| 250 | printk(BIOS_ERR, "gfx_pm_init: Unable to force-wake render\n"); |
| 251 | return; |
| 252 | } |
| 253 | |
| 254 | /* Media Force-Wake */ |
| 255 | gtt_write(0x1300B8, 0x80008000); |
| 256 | if (!gtt_poll(0x1300BC, 0x8000, 0x8000)) { |
| 257 | printk(BIOS_ERR, "gfx_pm_init: Unable to force-wake media\n"); |
| 258 | return; |
| 259 | }; |
| 260 | |
| 261 | /* Workaround - X0:261954/A0:261955 */ |
| 262 | gtt_rmw(0x182060, ~0xf, 1); |
| 263 | |
| 264 | /* Program GT PowerMeter weights */ |
| 265 | gtt_write_regs(gfx_powermeter_weights); |
| 266 | |
| 267 | /* Program PUNIT_GPU_EC_VIRUS based on DPTF SDP */ |
| 268 | /* SDP Profile 4 == 0x11940, others 0xcf08 */ |
| 269 | iosf_punit_write(PUNIT_GPU_EC_VIRUS, 0xcf08); |
| 270 | |
| 271 | /* GfxPause */ |
| 272 | gtt_write(0xa000, 0x00071388); |
| 273 | |
| 274 | /* Dynamic EU Control Settings */ |
| 275 | gtt_write(0xa080, 0x00000004); |
| 276 | |
| 277 | /* Lock ECO Bit Settings */ |
| 278 | gtt_write(0xa180, 0x80000000); |
| 279 | |
| 280 | /* DOP Clock Gating */ |
| 281 | gtt_write(0x9424, 0x00000001); |
| 282 | |
| 283 | /* MBCunit will send the VCR (Fuse) writes as NP-W */ |
| 284 | gtt_rmw(0x907c, 0xfffeffff, 0x00010000); |
| 285 | |
| 286 | /* RC6 Settings */ |
| 287 | gtt_write_regs(gfx_rc6_registers); |
| 288 | |
| 289 | /* Turbo Settings */ |
| 290 | gtt_write_regs(gfx_turbo_registers); |
| 291 | |
| 292 | /* Turbo Control Settings */ |
| 293 | gtt_write_regs(gfx_turbo_ctl_registers); |
| 294 | |
| 295 | /* RP Idle Hysteresis */ |
| 296 | gtt_write(0xa070, 0x0000000a); |
| 297 | |
| 298 | /* HW RC6 Control Settings */ |
| 299 | gtt_write(0xa090, 0x11000000); |
| 300 | |
| 301 | /* RP Control */ |
| 302 | gtt_write(0xa024, 0x00000592); |
| 303 | |
| 304 | /* Enable PM Interrupts */ |
| 305 | gtt_write(0x44024, 0x03000000); |
| 306 | gtt_write(0x4402c, 0x03000076); |
| 307 | gtt_write(0xa168, 0x0000007e); |
| 308 | |
| 309 | /* Lock power context base */ |
| 310 | gfx_lock_pcbase(dev); |
| 311 | |
| 312 | /* Aggressive Clock Gating */ |
| 313 | gtt_write(0x9400, 0); |
| 314 | gtt_write(0x9404, 0); |
| 315 | gtt_write(0x9408, 0); |
| 316 | gtt_write(0x940c, 0); |
| 317 | } |
| 318 | |
| 319 | static void gfx_pre_vbios_init(device_t dev) |
| 320 | { |
| 321 | /* Display */ |
| 322 | iosf_punit_write(PUNIT_PWRGT_CONTROL, 0xc0); |
| 323 | gfx_poll_power_gate(0xc0, 0xc0); |
| 324 | |
| 325 | /* Tx/Rx Lanes */ |
| 326 | iosf_punit_write(PUNIT_PWRGT_CONTROL, 0xfff0c0); |
| 327 | gfx_poll_power_gate(0xfff0c0, 0xfff0c0); |
| 328 | |
| 329 | /* Common Lane */ |
| 330 | iosf_punit_write(PUNIT_PWRGT_CONTROL, 0xfffcc0); |
| 331 | gfx_poll_power_gate(0xfffcc0, 0xfffcc0); |
| 332 | |
| 333 | /* Ungating Tx only */ |
| 334 | iosf_punit_write(PUNIT_PWRGT_CONTROL, 0xf00cc0); |
| 335 | gfx_poll_power_gate(0xfffcc0, 0xf00cc0); |
| 336 | |
| 337 | /* Ungating Common Lane only */ |
| 338 | iosf_punit_write(PUNIT_PWRGT_CONTROL, 0xf000c0); |
| 339 | gfx_poll_power_gate(0xffffc0, 0xf000c0); |
| 340 | |
| 341 | /* Ungating Display */ |
| 342 | iosf_punit_write(PUNIT_PWRGT_CONTROL, 0xf00000); |
| 343 | gfx_poll_power_gate(0xfffff0, 0xf00000); |
| 344 | } |
| 345 | |
| 346 | static void gfx_post_vbios_init(device_t dev) |
| 347 | { |
| 348 | /* Deassert Render Force-Wake */ |
| 349 | gtt_write(0x1300B0, 0x80000000); |
| 350 | gtt_poll(0x1300B4, 0x8000, 0); |
| 351 | |
| 352 | /* Deassert Media Force-Wake */ |
| 353 | gtt_write(0x1300B8, 0x80000000); |
| 354 | gtt_poll(0x1300BC, 0x8000, 0); |
| 355 | |
| 356 | /* Set Lock bits */ |
| 357 | pci_write_config32(dev, GGC, pci_read_config32(dev, GGC) | 1); |
| 358 | pci_write_config32(dev, GSM_BASE, pci_read_config32(dev, GSM_BASE) | 1); |
| 359 | pci_write_config32(dev, GTT_BASE, pci_read_config32(dev, GTT_BASE) | 1); |
| 360 | } |
| 361 | |
| 362 | static void gfx_init(device_t dev) |
| 363 | { |
| 364 | u32 reg32; |
| 365 | |
| 366 | /* Find GTT resource */ |
| 367 | gtt_res = find_resource(dev, PCI_BASE_ADDRESS_0); |
| 368 | if (!gtt_res || !gtt_res->base) |
| 369 | return; |
| 370 | |
| 371 | /* GFX needs to be Bus Master */ |
| 372 | reg32 = pci_read_config32(dev, PCI_COMMAND); |
| 373 | reg32 |= PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY | PCI_COMMAND_IO; |
| 374 | pci_write_config32(dev, PCI_COMMAND, reg32); |
| 375 | |
| 376 | /* Pre VBIOS Init */ |
| 377 | gfx_pre_vbios_init(dev); |
| 378 | gfx_pm_init(dev); |
| 379 | |
| 380 | /* Run VBIOS */ |
| 381 | pci_dev_init(dev); |
| 382 | |
| 383 | /* Post VBIOS Init */ |
| 384 | gfx_post_vbios_init(dev); |
| 385 | } |
| 386 | |
| 387 | static struct device_operations gfx_device_ops = { |
| 388 | .read_resources = pci_dev_read_resources, |
| 389 | .set_resources = pci_dev_set_resources, |
| 390 | .enable_resources = pci_dev_enable_resources, |
| 391 | .init = gfx_init, |
| 392 | .ops_pci = &soc_pci_ops, |
| 393 | }; |
| 394 | |
| 395 | static const struct pci_driver gfx_driver __pci_driver = { |
| 396 | .ops = &gfx_device_ops, |
| 397 | .vendor = PCI_VENDOR_ID_INTEL, |
| 398 | .device = GFX_DEVID, |
| 399 | }; |