1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef STICORE_H 3 #define STICORE_H 4 5 /* generic STI structures & functions */ 6 7 #define MAX_STI_ROMS 4 /* max no. of ROMs which this driver handles */ 8 9 #define STI_REGION_MAX 8 /* hardcoded STI constants */ 10 #define STI_DEV_NAME_LENGTH 32 11 #define STI_MONITOR_MAX 256 12 13 #define STI_FONT_HPROMAN8 1 14 #define STI_FONT_KANA8 2 15 16 #define ALT_CODE_TYPE_UNKNOWN 0x00 /* alt code type values */ 17 #define ALT_CODE_TYPE_PA_RISC_64 0x01 18 19 /* The latency of the STI functions cannot really be reduced by setting 20 * this to 0; STI doesn't seem to be designed to allow calling a different 21 * function (or the same function with different arguments) after a 22 * function exited with 1 as return value. 23 * 24 * As all of the functions below could be called from interrupt context, 25 * we have to spin_lock_irqsave around the do { ret = bla(); } while(ret==1) 26 * block. Really bad latency there. 27 * 28 * Probably the best solution to all this is have the generic code manage 29 * the screen buffer and a kernel thread to call STI occasionally. 30 * 31 * Luckily, the frame buffer guys have the same problem so we can just wait 32 * for them to fix it and steal their solution. prumpf 33 */ 34 35 #include <asm/io.h> 36 37 #define STI_WAIT 1 38 39 #define STI_PTR(p) ( virt_to_phys(p) ) 40 #define PTR_STI(p) ( phys_to_virt((unsigned long)p) ) 41 42 #define sti_onscreen_x(sti) (sti->glob_cfg->onscreen_x) 43 #define sti_onscreen_y(sti) (sti->glob_cfg->onscreen_y) 44 45 /* sti_font_xy() use the native font ROM ! */ 46 #define sti_font_x(sti) (PTR_STI(sti->font)->width) 47 #define sti_font_y(sti) (PTR_STI(sti->font)->height) 48 49 #ifdef CONFIG_64BIT 50 #define STI_LOWMEM (GFP_KERNEL | GFP_DMA) 51 #else 52 #define STI_LOWMEM (GFP_KERNEL) 53 #endif 54 55 56 /* STI function configuration structs */ 57 58 typedef union region { 59 struct { 60 u32 offset : 14; /* offset in 4kbyte page */ 61 u32 sys_only : 1; /* don't map to user space */ 62 u32 cache : 1; /* map to data cache */ 63 u32 btlb : 1; /* map to block tlb */ 64 u32 last : 1; /* last region in list */ 65 u32 length : 14; /* length in 4kbyte page */ 66 } region_desc; 67 68 u32 region; /* complete region value */ 69 } region_t; 70 71 #define REGION_OFFSET_TO_PHYS( rt, hpa ) \ 72 (((rt).region_desc.offset << 12) + (hpa)) 73 74 struct sti_glob_cfg_ext { 75 u8 curr_mon; /* current monitor configured */ 76 u8 friendly_boot; /* in friendly boot mode */ 77 s16 power; /* power calculation (in Watts) */ 78 s32 freq_ref; /* frequency reference */ 79 u32 sti_mem_addr; /* pointer to global sti memory (size=sti_mem_request) */ 80 u32 future_ptr; /* pointer to future data */ 81 }; 82 83 struct sti_glob_cfg { 84 s32 text_planes; /* number of planes used for text */ 85 s16 onscreen_x; /* screen width in pixels */ 86 s16 onscreen_y; /* screen height in pixels */ 87 s16 offscreen_x; /* offset width in pixels */ 88 s16 offscreen_y; /* offset height in pixels */ 89 s16 total_x; /* frame buffer width in pixels */ 90 s16 total_y; /* frame buffer height in pixels */ 91 u32 region_ptrs[STI_REGION_MAX]; /* region pointers */ 92 s32 reent_lvl; /* storage for reentry level value */ 93 u32 save_addr; /* where to save or restore reentrant state */ 94 u32 ext_ptr; /* pointer to extended glob_cfg data structure */ 95 }; 96 97 98 /* STI init function structs */ 99 100 struct sti_init_flags { 101 u32 wait : 1; /* should routine idle wait or not */ 102 u32 reset : 1; /* hard reset the device? */ 103 u32 text : 1; /* turn on text display planes? */ 104 u32 nontext : 1; /* turn on non-text display planes? */ 105 u32 clear : 1; /* clear text display planes? */ 106 u32 cmap_blk : 1; /* non-text planes cmap black? */ 107 u32 enable_be_timer : 1; /* enable bus error timer */ 108 u32 enable_be_int : 1; /* enable bus error timer interrupt */ 109 u32 no_chg_tx : 1; /* don't change text settings */ 110 u32 no_chg_ntx : 1; /* don't change non-text settings */ 111 u32 no_chg_bet : 1; /* don't change berr timer settings */ 112 u32 no_chg_bei : 1; /* don't change berr int settings */ 113 u32 init_cmap_tx : 1; /* initialize cmap for text planes */ 114 u32 cmt_chg : 1; /* change current monitor type */ 115 u32 retain_ie : 1; /* don't allow reset to clear int enables */ 116 u32 caller_bootrom : 1; /* set only by bootrom for each call */ 117 u32 caller_kernel : 1; /* set only by kernel for each call */ 118 u32 caller_other : 1; /* set only by non-[BR/K] caller */ 119 u32 pad : 14; /* pad to word boundary */ 120 u32 future_ptr; /* pointer to future data */ 121 }; 122 123 struct sti_init_inptr_ext { 124 u8 config_mon_type; /* configure to monitor type */ 125 u8 pad[1]; /* pad to word boundary */ 126 u16 inflight_data; /* inflight data possible on PCI */ 127 u32 future_ptr; /* pointer to future data */ 128 }; 129 130 struct sti_init_inptr { 131 s32 text_planes; /* number of planes to use for text */ 132 u32 ext_ptr; /* pointer to extended init_graph inptr data structure*/ 133 }; 134 135 136 struct sti_init_outptr { 137 s32 errno; /* error number on failure */ 138 s32 text_planes; /* number of planes used for text */ 139 u32 future_ptr; /* pointer to future data */ 140 }; 141 142 143 144 /* STI configuration function structs */ 145 146 struct sti_conf_flags { 147 u32 wait : 1; /* should routine idle wait or not */ 148 u32 pad : 31; /* pad to word boundary */ 149 u32 future_ptr; /* pointer to future data */ 150 }; 151 152 struct sti_conf_inptr { 153 u32 future_ptr; /* pointer to future data */ 154 }; 155 156 struct sti_conf_outptr_ext { 157 u32 crt_config[3]; /* hardware specific X11/OGL information */ 158 u32 crt_hdw[3]; 159 u32 future_ptr; 160 }; 161 162 struct sti_conf_outptr { 163 s32 errno; /* error number on failure */ 164 s16 onscreen_x; /* screen width in pixels */ 165 s16 onscreen_y; /* screen height in pixels */ 166 s16 offscreen_x; /* offscreen width in pixels */ 167 s16 offscreen_y; /* offscreen height in pixels */ 168 s16 total_x; /* frame buffer width in pixels */ 169 s16 total_y; /* frame buffer height in pixels */ 170 s32 bits_per_pixel; /* bits/pixel device has configured */ 171 s32 bits_used; /* bits which can be accessed */ 172 s32 planes; /* number of fb planes in system */ 173 u8 dev_name[STI_DEV_NAME_LENGTH]; /* null terminated product name */ 174 u32 attributes; /* flags denoting attributes */ 175 u32 ext_ptr; /* pointer to future data */ 176 }; 177 178 struct sti_rom { 179 u8 type[4]; 180 u8 res004; 181 u8 num_mons; 182 u8 revno[2]; 183 u32 graphics_id[2]; 184 185 u32 font_start; 186 u32 statesize; 187 u32 last_addr; 188 u32 region_list; 189 190 u16 reentsize; 191 u16 maxtime; 192 u32 mon_tbl_addr; 193 u32 user_data_addr; 194 u32 sti_mem_req; 195 196 u32 user_data_size; 197 u16 power; 198 u8 bus_support; 199 u8 ext_bus_support; 200 u8 alt_code_type; 201 u8 ext_dd_struct[3]; 202 u32 cfb_addr; 203 204 u32 init_graph; 205 u32 state_mgmt; 206 u32 font_unpmv; 207 u32 block_move; 208 u32 self_test; 209 u32 excep_hdlr; 210 u32 inq_conf; 211 u32 set_cm_entry; 212 u32 dma_ctrl; 213 u8 res040[7 * 4]; 214 215 u32 init_graph_addr; 216 u32 state_mgmt_addr; 217 u32 font_unp_addr; 218 u32 block_move_addr; 219 u32 self_test_addr; 220 u32 excep_hdlr_addr; 221 u32 inq_conf_addr; 222 u32 set_cm_entry_addr; 223 u32 image_unpack_addr; 224 u32 pa_risx_addrs[7]; 225 }; 226 227 struct sti_rom_font { 228 u16 first_char; 229 u16 last_char; 230 u8 width; 231 u8 height; 232 u8 font_type; /* language type */ 233 u8 bytes_per_char; 234 s32 next_font; /* note: signed int */ 235 u8 underline_height; 236 u8 underline_pos; 237 u8 res008[2]; 238 }; 239 240 /* sticore internal font handling */ 241 242 struct sti_cooked_font { 243 struct sti_rom_font *raw; /* native ptr for STI functions */ 244 void *raw_ptr; /* kmalloc'ed font data */ 245 struct sti_cooked_font *next_font; 246 int height, width; 247 int refcount; 248 u32 crc; 249 }; 250 251 struct sti_cooked_rom { 252 struct sti_rom *raw; 253 struct sti_cooked_font *font_start; 254 }; 255 256 /* STI font printing function structs */ 257 258 struct sti_font_inptr { 259 u32 font_start_addr; /* address of font start */ 260 s16 index; /* index into font table of character */ 261 u8 fg_color; /* foreground color of character */ 262 u8 bg_color; /* background color of character */ 263 s16 dest_x; /* X location of character upper left */ 264 s16 dest_y; /* Y location of character upper left */ 265 u32 future_ptr; /* pointer to future data */ 266 }; 267 268 struct sti_font_flags { 269 u32 wait : 1; /* should routine idle wait or not */ 270 u32 non_text : 1; /* font unpack/move in non_text planes =1, text =0 */ 271 u32 pad : 30; /* pad to word boundary */ 272 u32 future_ptr; /* pointer to future data */ 273 }; 274 275 struct sti_font_outptr { 276 s32 errno; /* error number on failure */ 277 u32 future_ptr; /* pointer to future data */ 278 }; 279 280 /* STI blockmove structs */ 281 282 struct sti_blkmv_flags { 283 u32 wait : 1; /* should routine idle wait or not */ 284 u32 color : 1; /* change color during move? */ 285 u32 clear : 1; /* clear during move? */ 286 u32 non_text : 1; /* block move in non_text planes =1, text =0 */ 287 u32 pad : 28; /* pad to word boundary */ 288 u32 future_ptr; /* pointer to future data */ 289 }; 290 291 struct sti_blkmv_inptr { 292 u8 fg_color; /* foreground color after move */ 293 u8 bg_color; /* background color after move */ 294 s16 src_x; /* source upper left pixel x location */ 295 s16 src_y; /* source upper left pixel y location */ 296 s16 dest_x; /* dest upper left pixel x location */ 297 s16 dest_y; /* dest upper left pixel y location */ 298 s16 width; /* block width in pixels */ 299 s16 height; /* block height in pixels */ 300 u32 future_ptr; /* pointer to future data */ 301 }; 302 303 struct sti_blkmv_outptr { 304 s32 errno; /* error number on failure */ 305 u32 future_ptr; /* pointer to future data */ 306 }; 307 308 309 /* sti_all_data is an internal struct which needs to be allocated in 310 * low memory (< 4GB) if STI is used with 32bit STI on a 64bit kernel */ 311 312 struct sti_all_data { 313 struct sti_glob_cfg glob_cfg; 314 struct sti_glob_cfg_ext glob_cfg_ext; 315 316 struct sti_conf_inptr inq_inptr; 317 struct sti_conf_outptr inq_outptr; /* configuration */ 318 struct sti_conf_outptr_ext inq_outptr_ext; 319 320 struct sti_init_inptr_ext init_inptr_ext; 321 struct sti_init_inptr init_inptr; 322 struct sti_init_outptr init_outptr; 323 324 struct sti_blkmv_inptr blkmv_inptr; 325 struct sti_blkmv_outptr blkmv_outptr; 326 327 struct sti_font_inptr font_inptr; 328 struct sti_font_outptr font_outptr; 329 330 /* leave as last entries */ 331 unsigned long save_addr[1024 / sizeof(unsigned long)]; 332 /* min 256 bytes which is STI default, max sti->sti_mem_request */ 333 unsigned long sti_mem_addr[256 / sizeof(unsigned long)]; 334 /* do not add something below here ! */ 335 }; 336 337 /* internal generic STI struct */ 338 339 struct sti_struct { 340 spinlock_t lock; 341 342 /* char **mon_strings; */ 343 int sti_mem_request; 344 u32 graphics_id[2]; 345 346 struct sti_cooked_rom *rom; 347 348 unsigned long font_unpmv; 349 unsigned long block_move; 350 unsigned long init_graph; 351 unsigned long inq_conf; 352 353 /* all following fields are initialized by the generic routines */ 354 int text_planes; 355 region_t regions[STI_REGION_MAX]; 356 unsigned long regions_phys[STI_REGION_MAX]; 357 358 struct sti_glob_cfg *glob_cfg; /* points into sti_all_data */ 359 360 int wordmode; 361 struct sti_cooked_font *font; /* ptr to selected font (cooked) */ 362 363 struct pci_dev *pd; 364 365 /* PCI data structures (pg. 17ff from sti.pdf) */ 366 u8 rm_entry[16]; /* pci region mapper array == pci config space offset */ 367 368 /* pointer to the fb_info where this STI device is used */ 369 struct fb_info *info; 370 371 /* pointer to all internal data */ 372 struct sti_all_data *sti_data; 373 374 /* pa_path of this device */ 375 char pa_path[24]; 376 }; 377 378 379 /* sticore interface functions */ 380 381 struct sti_struct *sti_get_rom(unsigned int index); /* 0: default sti */ 382 void sti_font_convert_bytemode(struct sti_struct *sti, struct sti_cooked_font *f); 383 384 385 /* sticore main function to call STI firmware */ 386 387 int sti_call(const struct sti_struct *sti, unsigned long func, 388 const void *flags, void *inptr, void *outptr, 389 struct sti_glob_cfg *glob_cfg); 390 391 392 /* functions to call the STI ROM directly */ 393 394 void sti_putc(struct sti_struct *sti, int c, int y, int x, 395 struct sti_cooked_font *font); 396 void sti_set(struct sti_struct *sti, int src_y, int src_x, 397 int height, int width, u8 color); 398 void sti_clear(struct sti_struct *sti, int src_y, int src_x, 399 int height, int width, int c, struct sti_cooked_font *font); 400 void sti_bmove(struct sti_struct *sti, int src_y, int src_x, 401 int dst_y, int dst_x, int height, int width, 402 struct sti_cooked_font *font); 403 404 #endif /* STICORE_H */ 405