1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * Copyright 2010 Matt Turner. 4 * Copyright 2012 Red Hat 5 * 6 * Authors: Matthew Garrett 7 * Matt Turner 8 * Dave Airlie 9 */ 10 #ifndef __MGAG200_DRV_H__ 11 #define __MGAG200_DRV_H__ 12 13 #include <linux/i2c-algo-bit.h> 14 #include <linux/i2c.h> 15 16 #include <video/vga.h> 17 18 #include <drm/drm_connector.h> 19 #include <drm/drm_crtc.h> 20 #include <drm/drm_encoder.h> 21 #include <drm/drm_gem.h> 22 #include <drm/drm_gem_shmem_helper.h> 23 #include <drm/drm_plane.h> 24 25 #include "mgag200_reg.h" 26 27 #define DRIVER_AUTHOR "Matthew Garrett" 28 29 #define DRIVER_NAME "mgag200" 30 #define DRIVER_DESC "MGA G200 SE" 31 #define DRIVER_DATE "20110418" 32 33 #define DRIVER_MAJOR 1 34 #define DRIVER_MINOR 0 35 #define DRIVER_PATCHLEVEL 0 36 37 #define RREG8(reg) ioread8(((void __iomem *)mdev->rmmio) + (reg)) 38 #define WREG8(reg, v) iowrite8(v, ((void __iomem *)mdev->rmmio) + (reg)) 39 #define RREG32(reg) ioread32(((void __iomem *)mdev->rmmio) + (reg)) 40 #define WREG32(reg, v) iowrite32(v, ((void __iomem *)mdev->rmmio) + (reg)) 41 42 #define MGA_BIOS_OFFSET 0x7ffc 43 44 #define ATTR_INDEX 0x1fc0 45 #define ATTR_DATA 0x1fc1 46 47 #define WREG_MISC(v) \ 48 WREG8(MGA_MISC_OUT, v) 49 50 #define RREG_MISC(v) \ 51 ((v) = RREG8(MGA_MISC_IN)) 52 53 #define WREG_MISC_MASKED(v, mask) \ 54 do { \ 55 u8 misc_; \ 56 u8 mask_ = (mask); \ 57 RREG_MISC(misc_); \ 58 misc_ &= ~mask_; \ 59 misc_ |= ((v) & mask_); \ 60 WREG_MISC(misc_); \ 61 } while (0) 62 63 #define WREG_ATTR(reg, v) \ 64 do { \ 65 RREG8(0x1fda); \ 66 WREG8(ATTR_INDEX, reg); \ 67 WREG8(ATTR_DATA, v); \ 68 } while (0) \ 69 70 #define RREG_SEQ(reg, v) \ 71 do { \ 72 WREG8(MGAREG_SEQ_INDEX, reg); \ 73 v = RREG8(MGAREG_SEQ_DATA); \ 74 } while (0) \ 75 76 #define WREG_SEQ(reg, v) \ 77 do { \ 78 WREG8(MGAREG_SEQ_INDEX, reg); \ 79 WREG8(MGAREG_SEQ_DATA, v); \ 80 } while (0) \ 81 82 #define RREG_CRT(reg, v) \ 83 do { \ 84 WREG8(MGAREG_CRTC_INDEX, reg); \ 85 v = RREG8(MGAREG_CRTC_DATA); \ 86 } while (0) \ 87 88 #define WREG_CRT(reg, v) \ 89 do { \ 90 WREG8(MGAREG_CRTC_INDEX, reg); \ 91 WREG8(MGAREG_CRTC_DATA, v); \ 92 } while (0) \ 93 94 #define RREG_ECRT(reg, v) \ 95 do { \ 96 WREG8(MGAREG_CRTCEXT_INDEX, reg); \ 97 v = RREG8(MGAREG_CRTCEXT_DATA); \ 98 } while (0) \ 99 100 #define WREG_ECRT(reg, v) \ 101 do { \ 102 WREG8(MGAREG_CRTCEXT_INDEX, reg); \ 103 WREG8(MGAREG_CRTCEXT_DATA, v); \ 104 } while (0) \ 105 106 #define GFX_INDEX 0x1fce 107 #define GFX_DATA 0x1fcf 108 109 #define WREG_GFX(reg, v) \ 110 do { \ 111 WREG8(GFX_INDEX, reg); \ 112 WREG8(GFX_DATA, v); \ 113 } while (0) \ 114 115 #define DAC_INDEX 0x3c00 116 #define DAC_DATA 0x3c0a 117 118 #define WREG_DAC(reg, v) \ 119 do { \ 120 WREG8(DAC_INDEX, reg); \ 121 WREG8(DAC_DATA, v); \ 122 } while (0) \ 123 124 #define MGA_MISC_OUT 0x1fc2 125 #define MGA_MISC_IN 0x1fcc 126 127 /* 128 * TODO: This is a pretty large set of default values for all kinds of 129 * settings. It should be split and set in the various DRM helpers, 130 * such as the CRTC reset or atomic_enable helpers. The PLL values 131 * probably belong to each model's PLL code. 132 */ 133 #define MGAG200_DAC_DEFAULT(xvrefctrl, xpixclkctrl, xmiscctrl, xsyspllm, xsysplln, xsyspllp) \ 134 /* 0x00: */ 0, 0, 0, 0, 0, 0, 0x00, 0, \ 135 /* 0x08: */ 0, 0, 0, 0, 0, 0, 0, 0, \ 136 /* 0x10: */ 0, 0, 0, 0, 0, 0, 0, 0, \ 137 /* 0x18: */ (xvrefctrl), \ 138 /* 0x19: */ 0, \ 139 /* 0x1a: */ (xpixclkctrl), \ 140 /* 0x1b: */ 0xff, 0xbf, 0x20, \ 141 /* 0x1e: */ (xmiscctrl), \ 142 /* 0x1f: */ 0x20, \ 143 /* 0x20: */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \ 144 /* 0x28: */ 0x00, 0x00, 0x00, 0x00, \ 145 /* 0x2c: */ (xsyspllm), \ 146 /* 0x2d: */ (xsysplln), \ 147 /* 0x2e: */ (xsyspllp), \ 148 /* 0x2f: */ 0x40, \ 149 /* 0x30: */ 0x00, 0xb0, 0x00, 0xc2, 0x34, 0x14, 0x02, 0x83, \ 150 /* 0x38: */ 0x00, 0x93, 0x00, 0x77, 0x00, 0x00, 0x00, 0x3a, \ 151 /* 0x40: */ 0, 0, 0, 0, 0, 0, 0, 0, \ 152 /* 0x48: */ 0, 0, 0, 0, 0, 0, 0, 0 \ 153 154 #define MGAG200_LUT_SIZE 256 155 156 #define MGAG200_MAX_FB_HEIGHT 4096 157 #define MGAG200_MAX_FB_WIDTH 4096 158 159 struct mga_device; 160 161 /* 162 * Stores parameters for programming the PLLs 163 * 164 * Fref: reference frequency (A: 25.175 Mhz, B: 28.361, C: XX Mhz) 165 * Fo: output frequency 166 * Fvco = Fref * (N / M) 167 * Fo = Fvco / P 168 * 169 * S = [0..3] 170 */ 171 struct mgag200_pll_values { 172 unsigned int m; 173 unsigned int n; 174 unsigned int p; 175 unsigned int s; 176 }; 177 178 struct mgag200_crtc_state { 179 struct drm_crtc_state base; 180 181 /* Primary-plane format; required for modesetting and color mgmt. */ 182 const struct drm_format_info *format; 183 184 struct mgag200_pll_values pixpllc; 185 }; 186 187 static inline struct mgag200_crtc_state *to_mgag200_crtc_state(struct drm_crtc_state *base) 188 { 189 return container_of(base, struct mgag200_crtc_state, base); 190 } 191 192 struct mga_i2c_chan { 193 struct i2c_adapter adapter; 194 struct drm_device *dev; 195 struct i2c_algo_bit_data bit; 196 int data, clock; 197 }; 198 199 enum mga_type { 200 G200_PCI, 201 G200_AGP, 202 G200_SE_A, 203 G200_SE_B, 204 G200_WB, 205 G200_EV, 206 G200_EH, 207 G200_EH3, 208 G200_ER, 209 G200_EW3, 210 }; 211 212 struct mgag200_device_info { 213 u16 max_hdisplay; 214 u16 max_vdisplay; 215 216 /* 217 * Maximum memory bandwidth (MiB/sec). Setting this to zero disables 218 * the rsp test during mode validation. 219 */ 220 unsigned long max_mem_bandwidth; 221 222 /* HW has external source (e.g., BMC) to synchronize with */ 223 bool has_vidrst:1; 224 225 struct { 226 unsigned data_bit:3; 227 unsigned clock_bit:3; 228 } i2c; 229 230 /* 231 * HW does not handle 'startadd' register correctly. Always set 232 * it's value to 0. 233 */ 234 bool bug_no_startadd:1; 235 }; 236 237 #define MGAG200_DEVICE_INFO_INIT(_max_hdisplay, _max_vdisplay, _max_mem_bandwidth, \ 238 _has_vidrst, _i2c_data_bit, _i2c_clock_bit, \ 239 _bug_no_startadd) \ 240 { \ 241 .max_hdisplay = (_max_hdisplay), \ 242 .max_vdisplay = (_max_vdisplay), \ 243 .max_mem_bandwidth = (_max_mem_bandwidth), \ 244 .has_vidrst = (_has_vidrst), \ 245 .i2c = { \ 246 .data_bit = (_i2c_data_bit), \ 247 .clock_bit = (_i2c_clock_bit), \ 248 }, \ 249 .bug_no_startadd = (_bug_no_startadd), \ 250 } 251 252 struct mgag200_device_funcs { 253 /* 254 * Disables an external reset source (i.e., BMC) before programming 255 * a new display mode. 256 */ 257 void (*disable_vidrst)(struct mga_device *mdev); 258 259 /* 260 * Enables an external reset source (i.e., BMC) after programming 261 * a new display mode. 262 */ 263 void (*enable_vidrst)(struct mga_device *mdev); 264 265 /* 266 * Validate that the given state can be programmed into PIXPLLC. On 267 * success, the calculated parameters should be stored in the CRTC's 268 * state in struct @mgag200_crtc_state.pixpllc. 269 */ 270 int (*pixpllc_atomic_check)(struct drm_crtc *crtc, struct drm_atomic_state *new_state); 271 272 /* 273 * Program PIXPLLC from the CRTC state. The parameters should have been 274 * stored in struct @mgag200_crtc_state.pixpllc by the corresponding 275 * implementation of @pixpllc_atomic_check. 276 */ 277 void (*pixpllc_atomic_update)(struct drm_crtc *crtc, struct drm_atomic_state *old_state); 278 }; 279 280 struct mga_device { 281 struct drm_device base; 282 283 const struct mgag200_device_info *info; 284 const struct mgag200_device_funcs *funcs; 285 286 struct resource *rmmio_res; 287 void __iomem *rmmio; 288 struct mutex rmmio_lock; /* Protects access to rmmio */ 289 290 struct resource *vram_res; 291 void __iomem *vram; 292 resource_size_t vram_available; 293 294 struct drm_plane primary_plane; 295 struct drm_crtc crtc; 296 struct drm_encoder encoder; 297 struct mga_i2c_chan i2c; 298 struct drm_connector connector; 299 }; 300 301 static inline struct mga_device *to_mga_device(struct drm_device *dev) 302 { 303 return container_of(dev, struct mga_device, base); 304 } 305 306 struct mgag200_g200_device { 307 struct mga_device base; 308 309 /* PLL constants */ 310 long ref_clk; 311 long pclk_min; 312 long pclk_max; 313 }; 314 315 static inline struct mgag200_g200_device *to_mgag200_g200_device(struct drm_device *dev) 316 { 317 return container_of(to_mga_device(dev), struct mgag200_g200_device, base); 318 } 319 320 struct mgag200_g200se_device { 321 struct mga_device base; 322 323 /* SE model number stored in reg 0x1e24 */ 324 u32 unique_rev_id; 325 }; 326 327 static inline struct mgag200_g200se_device *to_mgag200_g200se_device(struct drm_device *dev) 328 { 329 return container_of(to_mga_device(dev), struct mgag200_g200se_device, base); 330 } 331 332 /* mgag200_drv.c */ 333 int mgag200_init_pci_options(struct pci_dev *pdev, u32 option, u32 option2); 334 resource_size_t mgag200_probe_vram(void __iomem *mem, resource_size_t size); 335 resource_size_t mgag200_device_probe_vram(struct mga_device *mdev); 336 int mgag200_device_preinit(struct mga_device *mdev); 337 int mgag200_device_init(struct mga_device *mdev, 338 const struct mgag200_device_info *info, 339 const struct mgag200_device_funcs *funcs); 340 341 /* mgag200_<device type>.c */ 342 struct mga_device *mgag200_g200_device_create(struct pci_dev *pdev, const struct drm_driver *drv); 343 struct mga_device *mgag200_g200se_device_create(struct pci_dev *pdev, const struct drm_driver *drv, 344 enum mga_type type); 345 void mgag200_g200wb_init_registers(struct mga_device *mdev); 346 void mgag200_g200wb_pixpllc_atomic_update(struct drm_crtc *crtc, struct drm_atomic_state *old_state); 347 struct mga_device *mgag200_g200wb_device_create(struct pci_dev *pdev, const struct drm_driver *drv); 348 struct mga_device *mgag200_g200ev_device_create(struct pci_dev *pdev, const struct drm_driver *drv); 349 void mgag200_g200eh_init_registers(struct mga_device *mdev); 350 void mgag200_g200eh_pixpllc_atomic_update(struct drm_crtc *crtc, struct drm_atomic_state *old_state); 351 struct mga_device *mgag200_g200eh_device_create(struct pci_dev *pdev, 352 const struct drm_driver *drv); 353 struct mga_device *mgag200_g200eh3_device_create(struct pci_dev *pdev, 354 const struct drm_driver *drv); 355 struct mga_device *mgag200_g200er_device_create(struct pci_dev *pdev, 356 const struct drm_driver *drv); 357 struct mga_device *mgag200_g200ew3_device_create(struct pci_dev *pdev, 358 const struct drm_driver *drv); 359 360 /* 361 * mgag200_mode.c 362 */ 363 364 struct drm_crtc; 365 struct drm_crtc_state; 366 struct drm_display_mode; 367 struct drm_plane; 368 struct drm_atomic_state; 369 370 extern const uint32_t mgag200_primary_plane_formats[]; 371 extern const size_t mgag200_primary_plane_formats_size; 372 extern const uint64_t mgag200_primary_plane_fmtmods[]; 373 374 int mgag200_primary_plane_helper_atomic_check(struct drm_plane *plane, 375 struct drm_atomic_state *new_state); 376 void mgag200_primary_plane_helper_atomic_update(struct drm_plane *plane, 377 struct drm_atomic_state *old_state); 378 void mgag200_primary_plane_helper_atomic_enable(struct drm_plane *plane, 379 struct drm_atomic_state *state); 380 void mgag200_primary_plane_helper_atomic_disable(struct drm_plane *plane, 381 struct drm_atomic_state *old_state); 382 #define MGAG200_PRIMARY_PLANE_HELPER_FUNCS \ 383 DRM_GEM_SHADOW_PLANE_HELPER_FUNCS, \ 384 .atomic_check = mgag200_primary_plane_helper_atomic_check, \ 385 .atomic_update = mgag200_primary_plane_helper_atomic_update, \ 386 .atomic_enable = mgag200_primary_plane_helper_atomic_enable, \ 387 .atomic_disable = mgag200_primary_plane_helper_atomic_disable 388 389 #define MGAG200_PRIMARY_PLANE_FUNCS \ 390 .update_plane = drm_atomic_helper_update_plane, \ 391 .disable_plane = drm_atomic_helper_disable_plane, \ 392 .destroy = drm_plane_cleanup, \ 393 DRM_GEM_SHADOW_PLANE_FUNCS 394 395 enum drm_mode_status mgag200_crtc_helper_mode_valid(struct drm_crtc *crtc, 396 const struct drm_display_mode *mode); 397 int mgag200_crtc_helper_atomic_check(struct drm_crtc *crtc, struct drm_atomic_state *new_state); 398 void mgag200_crtc_helper_atomic_flush(struct drm_crtc *crtc, struct drm_atomic_state *old_state); 399 void mgag200_crtc_helper_atomic_enable(struct drm_crtc *crtc, struct drm_atomic_state *old_state); 400 void mgag200_crtc_helper_atomic_disable(struct drm_crtc *crtc, struct drm_atomic_state *old_state); 401 402 #define MGAG200_CRTC_HELPER_FUNCS \ 403 .mode_valid = mgag200_crtc_helper_mode_valid, \ 404 .atomic_check = mgag200_crtc_helper_atomic_check, \ 405 .atomic_flush = mgag200_crtc_helper_atomic_flush, \ 406 .atomic_enable = mgag200_crtc_helper_atomic_enable, \ 407 .atomic_disable = mgag200_crtc_helper_atomic_disable 408 409 void mgag200_crtc_reset(struct drm_crtc *crtc); 410 struct drm_crtc_state *mgag200_crtc_atomic_duplicate_state(struct drm_crtc *crtc); 411 void mgag200_crtc_atomic_destroy_state(struct drm_crtc *crtc, struct drm_crtc_state *crtc_state); 412 413 #define MGAG200_CRTC_FUNCS \ 414 .reset = mgag200_crtc_reset, \ 415 .destroy = drm_crtc_cleanup, \ 416 .set_config = drm_atomic_helper_set_config, \ 417 .page_flip = drm_atomic_helper_page_flip, \ 418 .atomic_duplicate_state = mgag200_crtc_atomic_duplicate_state, \ 419 .atomic_destroy_state = mgag200_crtc_atomic_destroy_state 420 421 #define MGAG200_DAC_ENCODER_FUNCS \ 422 .destroy = drm_encoder_cleanup 423 424 int mgag200_vga_connector_helper_get_modes(struct drm_connector *connector); 425 426 #define MGAG200_VGA_CONNECTOR_HELPER_FUNCS \ 427 .get_modes = mgag200_vga_connector_helper_get_modes 428 429 #define MGAG200_VGA_CONNECTOR_FUNCS \ 430 .reset = drm_atomic_helper_connector_reset, \ 431 .fill_modes = drm_helper_probe_single_connector_modes, \ 432 .destroy = drm_connector_cleanup, \ 433 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, \ 434 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state 435 436 void mgag200_set_mode_regs(struct mga_device *mdev, const struct drm_display_mode *mode); 437 void mgag200_set_format_regs(struct mga_device *mdev, const struct drm_format_info *format); 438 void mgag200_enable_display(struct mga_device *mdev); 439 void mgag200_init_registers(struct mga_device *mdev); 440 int mgag200_mode_config_init(struct mga_device *mdev, resource_size_t vram_available); 441 442 /* mgag200_bmc.c */ 443 void mgag200_bmc_disable_vidrst(struct mga_device *mdev); 444 void mgag200_bmc_enable_vidrst(struct mga_device *mdev); 445 446 /* mgag200_i2c.c */ 447 int mgag200_i2c_init(struct mga_device *mdev, struct mga_i2c_chan *i2c); 448 449 #endif /* __MGAG200_DRV_H__ */ 450