include/video/sticore.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef STICORE_H
   3 #define STICORE_H
   4
   5 struct device;
   6
   7 /* generic STI structures & functions */
   8
   9 #define MAX_STI_ROMS 4          /* max no. of ROMs which this driver handles */
  10
  11 #define STI_REGION_MAX 8        /* hardcoded STI constants */
  12 #define STI_DEV_NAME_LENGTH 32
  13 #define STI_MONITOR_MAX 256
  14
  15 #define STI_FONT_HPROMAN8 1
  16 #define STI_FONT_KANA8 2
  17
  18 #define ALT_CODE_TYPE_UNKNOWN 0x00      /* alt code type values */
  19 #define ALT_CODE_TYPE_PA_RISC_64 0x01
  20
  21 /* The latency of the STI functions cannot really be reduced by setting
  22  * this to 0;  STI doesn't seem to be designed to allow calling a different
  23  * function (or the same function with different arguments) after a
  24  * function exited with 1 as return value.
  25  *
  26  * As all of the functions below could be called from interrupt context,
  27  * we have to spin_lock_irqsave around the do { ret = bla(); } while(ret==1)
  28  * block.  Really bad latency there.
  29  *
  30  * Probably the best solution to all this is have the generic code manage
  31  * the screen buffer and a kernel thread to call STI occasionally.
  32  *
  33  * Luckily, the frame buffer guys have the same problem so we can just wait
  34  * for them to fix it and steal their solution.   prumpf
  35  */
  36
  37 #include <asm/io.h>
  38
  39 #define STI_WAIT 1
  40
  41 #define STI_PTR(p)      ( virt_to_phys(p) )
  42
  43 #define sti_onscreen_x(sti) (sti->glob_cfg->onscreen_x)
  44 #define sti_onscreen_y(sti) (sti->glob_cfg->onscreen_y)
  45
  46 /* sti_font_xy() use the native font ROM ! */
  47 #define sti_font_x(sti) (PTR_STI(sti->font)->width)
  48 #define sti_font_y(sti) (PTR_STI(sti->font)->height)
  49
  50 #ifdef CONFIG_64BIT
  51 #define STI_LOWMEM      (GFP_KERNEL | GFP_DMA)
  52 #else
  53 #define STI_LOWMEM      (GFP_KERNEL)
  54 #endif
  55
  56
  57 /* STI function configuration structs */
  58
  59 typedef union region {
  60         struct {
  61                 u32 offset      : 14;   /* offset in 4kbyte page */
  62                 u32 sys_only    : 1;    /* don't map to user space */
  63                 u32 cache       : 1;    /* map to data cache */
  64                 u32 btlb        : 1;    /* map to block tlb */
  65                 u32 last        : 1;    /* last region in list */
  66                 u32 length      : 14;   /* length in 4kbyte page */
  67         } region_desc;
  68
  69         u32 region;                     /* complete region value */
  70 } region_t;
  71
  72 #define REGION_OFFSET_TO_PHYS( rt, hpa ) \
  73         (((rt).region_desc.offset << 12) + (hpa))
  74
  75 struct sti_glob_cfg_ext {
  76          u8 curr_mon;                   /* current monitor configured */
  77          u8 friendly_boot;              /* in friendly boot mode */
  78         s16 power;                      /* power calculation (in Watts) */
  79         s32 freq_ref;                   /* frequency reference */
  80         u32 *sti_mem_addr;              /* pointer to global sti memory (size=sti_mem_request) */
  81         u32 *future_ptr;                /* pointer to future data */
  82 };
  83
  84 struct sti_glob_cfg {
  85         s32 text_planes;                /* number of planes used for text */
  86         s16 onscreen_x;                 /* screen width in pixels */
  87         s16 onscreen_y;                 /* screen height in pixels */
  88         s16 offscreen_x;                /* offset width in pixels */
  89         s16 offscreen_y;                /* offset height in pixels */
  90         s16 total_x;                    /* frame buffer width in pixels */
  91         s16 total_y;                    /* frame buffer height in pixels */
  92         u32 *region_ptrs[STI_REGION_MAX]; /* region pointers */
  93         s32 reent_lvl;                  /* storage for reentry level value */
  94         u32 *save_addr;                 /* where to save or restore reentrant state */
  95         u32 *ext_ptr;                   /* pointer to extended glob_cfg data structure */
  96 };
  97
  98
  99 /* STI init function structs */
 100
 101 struct sti_init_flags {
 102         u32 wait : 1;           /* should routine idle wait or not */
 103         u32 reset : 1;          /* hard reset the device? */
 104         u32 text : 1;           /* turn on text display planes? */
 105         u32 nontext : 1;        /* turn on non-text display planes? */
 106         u32 clear : 1;          /* clear text display planes? */
 107         u32 cmap_blk : 1;       /* non-text planes cmap black? */
 108         u32 enable_be_timer : 1; /* enable bus error timer */
 109         u32 enable_be_int : 1;  /* enable bus error timer interrupt */
 110         u32 no_chg_tx : 1;      /* don't change text settings */
 111         u32 no_chg_ntx : 1;     /* don't change non-text settings */
 112         u32 no_chg_bet : 1;     /* don't change berr timer settings */
 113         u32 no_chg_bei : 1;     /* don't change berr int settings */
 114         u32 init_cmap_tx : 1;   /* initialize cmap for text planes */
 115         u32 cmt_chg : 1;        /* change current monitor type */
 116         u32 retain_ie : 1;      /* don't allow reset to clear int enables */
 117         u32 caller_bootrom : 1; /* set only by bootrom for each call */
 118         u32 caller_kernel : 1;  /* set only by kernel for each call */
 119         u32 caller_other : 1;   /* set only by non-[BR/K] caller */
 120         u32 pad : 14;           /* pad to word boundary */
 121         u32 *future_ptr;        /* pointer to future data */
 122 };
 123
 124 struct sti_init_inptr_ext {
 125         u8  config_mon_type;    /* configure to monitor type */
 126         u8  pad[1];             /* pad to word boundary */
 127         u16 inflight_data;      /* inflight data possible on PCI */
 128         u32 *future_ptr;        /* pointer to future data */
 129 };
 130
 131 struct sti_init_inptr {
 132         s32 text_planes;        /* number of planes to use for text */
 133         u32 *ext_ptr;           /* pointer to extended init_graph inptr data structure*/
 134 };
 135
 136
 137 struct sti_init_outptr {
 138         s32 errno;              /* error number on failure */
 139         s32 text_planes;        /* number of planes used for text */
 140         u32 *future_ptr;        /* pointer to future data */
 141 };
 142
 143
 144
 145 /* STI configuration function structs */
 146
 147 struct sti_conf_flags {
 148         u32 wait : 1;           /* should routine idle wait or not */
 149         u32 pad : 31;           /* pad to word boundary */
 150         u32 *future_ptr;        /* pointer to future data */
 151 };
 152
 153 struct sti_conf_inptr {
 154         u32 *future_ptr;        /* pointer to future data */
 155 };
 156
 157 struct sti_conf_outptr_ext {
 158         u32 crt_config[3];      /* hardware specific X11/OGL information */
 159         u32 crt_hdw[3];
 160         u32 *future_ptr;
 161 };
 162
 163 struct sti_conf_outptr {
 164         s32 errno;              /* error number on failure */
 165         s16 onscreen_x;         /* screen width in pixels */
 166         s16 onscreen_y;         /* screen height in pixels */
 167         s16 offscreen_x;        /* offscreen width in pixels */
 168         s16 offscreen_y;        /* offscreen height in pixels */
 169         s16 total_x;            /* frame buffer width in pixels */
 170         s16 total_y;            /* frame buffer height in pixels */
 171         s32 bits_per_pixel;     /* bits/pixel device has configured */
 172         s32 bits_used;          /* bits which can be accessed */
 173         s32 planes;             /* number of fb planes in system */
 174          u8 dev_name[STI_DEV_NAME_LENGTH]; /* null terminated product name */
 175         u32 attributes;         /* flags denoting attributes */
 176         u32 *ext_ptr;           /* pointer to future data */
 177 };
 178
 179 struct sti_rom {
 180          u8 type[4];
 181          u8 res004;
 182          u8 num_mons;
 183          u8 revno[2];
 184         u32 graphics_id[2];
 185
 186         u32 font_start;
 187         u32 statesize;
 188         u32 last_addr;
 189         u32 region_list;
 190
 191         u16 reentsize;
 192         u16 maxtime;
 193         u32 mon_tbl_addr;
 194         u32 user_data_addr;
 195         u32 sti_mem_req;
 196
 197         u32 user_data_size;
 198         u16 power;
 199          u8 bus_support;
 200          u8 ext_bus_support;
 201          u8 alt_code_type;
 202          u8 ext_dd_struct[3];
 203         u32 cfb_addr;
 204
 205         u32 init_graph;
 206         u32 state_mgmt;
 207         u32 font_unpmv;
 208         u32 block_move;
 209         u32 self_test;
 210         u32 excep_hdlr;
 211         u32 inq_conf;
 212         u32 set_cm_entry;
 213         u32 dma_ctrl;
 214          u8 res040[7 * 4];
 215
 216         u32 init_graph_addr;
 217         u32 state_mgmt_addr;
 218         u32 font_unp_addr;
 219         u32 block_move_addr;
 220         u32 self_test_addr;
 221         u32 excep_hdlr_addr;
 222         u32 inq_conf_addr;
 223         u32 set_cm_entry_addr;
 224         u32 image_unpack_addr;
 225         u32 pa_risx_addrs[7];
 226 };
 227
 228 struct sti_rom_font {
 229         u16 first_char;
 230         u16 last_char;
 231          u8 width;
 232          u8 height;
 233          u8 font_type;          /* language type */
 234          u8 bytes_per_char;
 235         s32 next_font;          /* note: signed int */
 236          u8 underline_height;
 237          u8 underline_pos;
 238          u8 res008[2];
 239 };
 240
 241 /* sticore internal font handling */
 242
 243 struct sti_cooked_font {
 244         struct sti_rom_font *raw;       /* native ptr for STI functions */
 245         void *raw_ptr;                  /* kmalloc'ed font data */
 246         struct sti_cooked_font *next_font;
 247         int height, width;
 248         int refcount;
 249         u32 crc;
 250 };
 251
 252 struct sti_cooked_rom {
 253         struct sti_rom *raw;
 254         struct sti_cooked_font *font_start;
 255 };
 256
 257 /* STI font printing function structs */
 258
 259 struct sti_font_inptr {
 260         u32 *font_start_addr;   /* address of font start */
 261         s16 index;              /* index into font table of character */
 262         u8 fg_color;            /* foreground color of character */
 263         u8 bg_color;            /* background color of character */
 264         s16 dest_x;             /* X location of character upper left */
 265         s16 dest_y;             /* Y location of character upper left */
 266         u32 *future_ptr;        /* pointer to future data */
 267 };
 268
 269 struct sti_font_flags {
 270         u32 wait : 1;           /* should routine idle wait or not */
 271         u32 non_text : 1;       /* font unpack/move in non_text planes =1, text =0 */
 272         u32 pad : 30;           /* pad to word boundary */
 273         u32 *future_ptr;        /* pointer to future data */
 274 };
 275
 276 struct sti_font_outptr {
 277         s32 errno;              /* error number on failure */
 278         u32 *future_ptr;        /* pointer to future data */
 279 };
 280
 281 /* STI blockmove structs */
 282
 283 struct sti_blkmv_flags {
 284         u32 wait : 1;           /* should routine idle wait or not */
 285         u32 color : 1;          /* change color during move? */
 286         u32 clear : 1;          /* clear during move? */
 287         u32 non_text : 1;       /* block move in non_text planes =1, text =0 */
 288         u32 pad : 28;           /* pad to word boundary */
 289         u32 *future_ptr;        /* pointer to future data */
 290 };
 291
 292 struct sti_blkmv_inptr {
 293         u8 fg_color;            /* foreground color after move */
 294         u8 bg_color;            /* background color after move */
 295         s16 src_x;              /* source upper left pixel x location */
 296         s16 src_y;              /* source upper left pixel y location */
 297         s16 dest_x;             /* dest upper left pixel x location */
 298         s16 dest_y;             /* dest upper left pixel y location */
 299         s16 width;              /* block width in pixels */
 300         s16 height;             /* block height in pixels */
 301         u32 *future_ptr;        /* pointer to future data */
 302 };
 303
 304 struct sti_blkmv_outptr {
 305         s32 errno;              /* error number on failure */
 306         u32 *future_ptr;        /* pointer to future data */
 307 };
 308
 309
 310 /* sti_all_data is an internal struct which needs to be allocated in
 311  * low memory (< 4GB) if STI is used with 32bit STI on a 64bit kernel */
 312
 313 struct sti_all_data {
 314         struct sti_glob_cfg glob_cfg;
 315         struct sti_glob_cfg_ext glob_cfg_ext;
 316
 317         struct sti_conf_inptr           inq_inptr;
 318         struct sti_conf_outptr          inq_outptr; /* configuration */
 319         struct sti_conf_outptr_ext      inq_outptr_ext;
 320
 321         struct sti_init_inptr_ext       init_inptr_ext;
 322         struct sti_init_inptr           init_inptr;
 323         struct sti_init_outptr          init_outptr;
 324
 325         struct sti_blkmv_inptr          blkmv_inptr;
 326         struct sti_blkmv_outptr         blkmv_outptr;
 327
 328         struct sti_font_inptr           font_inptr;
 329         struct sti_font_outptr          font_outptr;
 330
 331         /* leave as last entries */
 332         unsigned long save_addr[1024 / sizeof(unsigned long)];
 333            /* min 256 bytes which is STI default, max sti->sti_mem_request */
 334         unsigned long sti_mem_addr[256 / sizeof(unsigned long)];
 335         /* do not add something below here ! */
 336 };
 337
 338 /* internal generic STI struct */
 339
 340 struct sti_struct {
 341         spinlock_t lock;
 342
 343         /* char **mon_strings; */
 344         int sti_mem_request;
 345         u32 graphics_id[2];
 346
 347         struct sti_cooked_rom *rom;
 348
 349         unsigned long font_unpmv;
 350         unsigned long block_move;
 351         unsigned long init_graph;
 352         unsigned long inq_conf;
 353         int do_call64;                  /* call 64-bit code */
 354
 355         /* all following fields are initialized by the generic routines */
 356         int text_planes;
 357         region_t regions[STI_REGION_MAX];
 358         unsigned long regions_phys[STI_REGION_MAX];
 359
 360         struct sti_glob_cfg *glob_cfg;  /* points into sti_all_data */
 361
 362         int wordmode;
 363         struct sti_cooked_font *font;   /* ptr to selected font (cooked) */
 364
 365         struct pci_dev *pd;
 366
 367         /* PCI data structures (pg. 17ff from sti.pdf) */
 368         u8 rm_entry[16]; /* pci region mapper array == pci config space offset */
 369
 370         /* pointer to the parent device */
 371         struct device *dev;
 372
 373         /* pointer to all internal data */
 374         struct sti_all_data *sti_data;
 375
 376         /* pa_path of this device */
 377         char pa_path[24];
 378 };
 379
 380
 381 /* sticore interface functions */
 382
 383 struct sti_struct *sti_get_rom(unsigned int index); /* 0: default sti */
 384 void sti_font_convert_bytemode(struct sti_struct *sti, struct sti_cooked_font *f);
 385
 386
 387 /* sticore main function to call STI firmware */
 388
 389 int sti_call(const struct sti_struct *sti, unsigned long func,
 390                 const void *flags, void *inptr, void *outptr,
 391                 struct sti_glob_cfg *glob_cfg);
 392
 393
 394 /* functions to call the STI ROM directly */
 395
 396 void sti_putc(struct sti_struct *sti, int c, int y, int x,
 397                 struct sti_cooked_font *font);
 398 void sti_set(struct sti_struct *sti, int src_y, int src_x,
 399                 int height, int width, u8 color);
 400 void sti_clear(struct sti_struct *sti, int src_y, int src_x,
 401                 int height, int width, int c, struct sti_cooked_font *font);
 402 void sti_bmove(struct sti_struct *sti, int src_y, int src_x,
 403                 int dst_y, int dst_x, int height, int width,
 404                 struct sti_cooked_font *font);
 405
 406 #endif  /* STICORE_H */