diff options
Diffstat (limited to 'drivers/video/fbdev/sticore.h')
| -rw-r--r-- | drivers/video/fbdev/sticore.h | 402 |
1 files changed, 402 insertions, 0 deletions
diff --git a/drivers/video/fbdev/sticore.h b/drivers/video/fbdev/sticore.h new file mode 100644 index 000000000..fb8f58f98 --- /dev/null +++ b/drivers/video/fbdev/sticore.h @@ -0,0 +1,402 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef STICORE_H +#define STICORE_H + +/* generic STI structures & functions */ + +#if 0 +#define DPRINTK(x) printk x +#else +#define DPRINTK(x) +#endif + +#define MAX_STI_ROMS 4 /* max no. of ROMs which this driver handles */ + +#define STI_REGION_MAX 8 /* hardcoded STI constants */ +#define STI_DEV_NAME_LENGTH 32 +#define STI_MONITOR_MAX 256 + +#define STI_FONT_HPROMAN8 1 +#define STI_FONT_KANA8 2 + +#define ALT_CODE_TYPE_UNKNOWN 0x00 /* alt code type values */ +#define ALT_CODE_TYPE_PA_RISC_64 0x01 + +/* The latency of the STI functions cannot really be reduced by setting + * this to 0; STI doesn't seem to be designed to allow calling a different + * function (or the same function with different arguments) after a + * function exited with 1 as return value. + * + * As all of the functions below could be called from interrupt context, + * we have to spin_lock_irqsave around the do { ret = bla(); } while(ret==1) + * block. Really bad latency there. + * + * Probably the best solution to all this is have the generic code manage + * the screen buffer and a kernel thread to call STI occasionally. + * + * Luckily, the frame buffer guys have the same problem so we can just wait + * for them to fix it and steal their solution. prumpf + */ + +#include <asm/io.h> + +#define STI_WAIT 1 + +#define STI_PTR(p) ( virt_to_phys(p) ) +#define PTR_STI(p) ( phys_to_virt((unsigned long)p) ) + +#define sti_onscreen_x(sti) (sti->glob_cfg->onscreen_x) +#define sti_onscreen_y(sti) (sti->glob_cfg->onscreen_y) + +/* sti_font_xy() use the native font ROM ! */ +#define sti_font_x(sti) (PTR_STI(sti->font)->width) +#define sti_font_y(sti) (PTR_STI(sti->font)->height) + +#ifdef CONFIG_64BIT +#define STI_LOWMEM (GFP_KERNEL | GFP_DMA) +#else +#define STI_LOWMEM (GFP_KERNEL) +#endif + + +/* STI function configuration structs */ + +typedef union region { + struct { + u32 offset : 14; /* offset in 4kbyte page */ + u32 sys_only : 1; /* don't map to user space */ + u32 cache : 1; /* map to data cache */ + u32 btlb : 1; /* map to block tlb */ + u32 last : 1; /* last region in list */ + u32 length : 14; /* length in 4kbyte page */ + } region_desc; + + u32 region; /* complete region value */ +} region_t; + +#define REGION_OFFSET_TO_PHYS( rt, hpa ) \ + (((rt).region_desc.offset << 12) + (hpa)) + +struct sti_glob_cfg_ext { + u8 curr_mon; /* current monitor configured */ + u8 friendly_boot; /* in friendly boot mode */ + s16 power; /* power calculation (in Watts) */ + s32 freq_ref; /* frequency reference */ + u32 sti_mem_addr; /* pointer to global sti memory (size=sti_mem_request) */ + u32 future_ptr; /* pointer to future data */ +}; + +struct sti_glob_cfg { + s32 text_planes; /* number of planes used for text */ + s16 onscreen_x; /* screen width in pixels */ + s16 onscreen_y; /* screen height in pixels */ + s16 offscreen_x; /* offset width in pixels */ + s16 offscreen_y; /* offset height in pixels */ + s16 total_x; /* frame buffer width in pixels */ + s16 total_y; /* frame buffer height in pixels */ + u32 region_ptrs[STI_REGION_MAX]; /* region pointers */ + s32 reent_lvl; /* storage for reentry level value */ + u32 save_addr; /* where to save or restore reentrant state */ + u32 ext_ptr; /* pointer to extended glob_cfg data structure */ +}; + + +/* STI init function structs */ + +struct sti_init_flags { + u32 wait : 1; /* should routine idle wait or not */ + u32 reset : 1; /* hard reset the device? */ + u32 text : 1; /* turn on text display planes? */ + u32 nontext : 1; /* turn on non-text display planes? */ + u32 clear : 1; /* clear text display planes? */ + u32 cmap_blk : 1; /* non-text planes cmap black? */ + u32 enable_be_timer : 1; /* enable bus error timer */ + u32 enable_be_int : 1; /* enable bus error timer interrupt */ + u32 no_chg_tx : 1; /* don't change text settings */ + u32 no_chg_ntx : 1; /* don't change non-text settings */ + u32 no_chg_bet : 1; /* don't change berr timer settings */ + u32 no_chg_bei : 1; /* don't change berr int settings */ + u32 init_cmap_tx : 1; /* initialize cmap for text planes */ + u32 cmt_chg : 1; /* change current monitor type */ + u32 retain_ie : 1; /* don't allow reset to clear int enables */ + u32 caller_bootrom : 1; /* set only by bootrom for each call */ + u32 caller_kernel : 1; /* set only by kernel for each call */ + u32 caller_other : 1; /* set only by non-[BR/K] caller */ + u32 pad : 14; /* pad to word boundary */ + u32 future_ptr; /* pointer to future data */ +}; + +struct sti_init_inptr_ext { + u8 config_mon_type; /* configure to monitor type */ + u8 pad[1]; /* pad to word boundary */ + u16 inflight_data; /* inflight data possible on PCI */ + u32 future_ptr; /* pointer to future data */ +}; + +struct sti_init_inptr { + s32 text_planes; /* number of planes to use for text */ + u32 ext_ptr; /* pointer to extended init_graph inptr data structure*/ +}; + + +struct sti_init_outptr { + s32 errno; /* error number on failure */ + s32 text_planes; /* number of planes used for text */ + u32 future_ptr; /* pointer to future data */ +}; + + + +/* STI configuration function structs */ + +struct sti_conf_flags { + u32 wait : 1; /* should routine idle wait or not */ + u32 pad : 31; /* pad to word boundary */ + u32 future_ptr; /* pointer to future data */ +}; + +struct sti_conf_inptr { + u32 future_ptr; /* pointer to future data */ +}; + +struct sti_conf_outptr_ext { + u32 crt_config[3]; /* hardware specific X11/OGL information */ + u32 crt_hdw[3]; + u32 future_ptr; +}; + +struct sti_conf_outptr { + s32 errno; /* error number on failure */ + s16 onscreen_x; /* screen width in pixels */ + s16 onscreen_y; /* screen height in pixels */ + s16 offscreen_x; /* offscreen width in pixels */ + s16 offscreen_y; /* offscreen height in pixels */ + s16 total_x; /* frame buffer width in pixels */ + s16 total_y; /* frame buffer height in pixels */ + s32 bits_per_pixel; /* bits/pixel device has configured */ + s32 bits_used; /* bits which can be accessed */ + s32 planes; /* number of fb planes in system */ + u8 dev_name[STI_DEV_NAME_LENGTH]; /* null terminated product name */ + u32 attributes; /* flags denoting attributes */ + u32 ext_ptr; /* pointer to future data */ +}; + +struct sti_rom { + u8 type[4]; + u8 res004; + u8 num_mons; + u8 revno[2]; + u32 graphics_id[2]; + + u32 font_start; + u32 statesize; + u32 last_addr; + u32 region_list; + + u16 reentsize; + u16 maxtime; + u32 mon_tbl_addr; + u32 user_data_addr; + u32 sti_mem_req; + + u32 user_data_size; + u16 power; + u8 bus_support; + u8 ext_bus_support; + u8 alt_code_type; + u8 ext_dd_struct[3]; + u32 cfb_addr; + + u32 init_graph; + u32 state_mgmt; + u32 font_unpmv; + u32 block_move; + u32 self_test; + u32 excep_hdlr; + u32 inq_conf; + u32 set_cm_entry; + u32 dma_ctrl; + u8 res040[7 * 4]; + + u32 init_graph_addr; + u32 state_mgmt_addr; + u32 font_unp_addr; + u32 block_move_addr; + u32 self_test_addr; + u32 excep_hdlr_addr; + u32 inq_conf_addr; + u32 set_cm_entry_addr; + u32 image_unpack_addr; + u32 pa_risx_addrs[7]; +}; + +struct sti_rom_font { + u16 first_char; + u16 last_char; + u8 width; + u8 height; + u8 font_type; /* language type */ + u8 bytes_per_char; + u32 next_font; + u8 underline_height; + u8 underline_pos; + u8 res008[2]; +}; + +/* sticore internal font handling */ + +struct sti_cooked_font { + struct sti_rom_font *raw; + struct sti_cooked_font *next_font; +}; + +struct sti_cooked_rom { + struct sti_rom *raw; + struct sti_cooked_font *font_start; +}; + +/* STI font printing function structs */ + +struct sti_font_inptr { + u32 font_start_addr; /* address of font start */ + s16 index; /* index into font table of character */ + u8 fg_color; /* foreground color of character */ + u8 bg_color; /* background color of character */ + s16 dest_x; /* X location of character upper left */ + s16 dest_y; /* Y location of character upper left */ + u32 future_ptr; /* pointer to future data */ +}; + +struct sti_font_flags { + u32 wait : 1; /* should routine idle wait or not */ + u32 non_text : 1; /* font unpack/move in non_text planes =1, text =0 */ + u32 pad : 30; /* pad to word boundary */ + u32 future_ptr; /* pointer to future data */ +}; + +struct sti_font_outptr { + s32 errno; /* error number on failure */ + u32 future_ptr; /* pointer to future data */ +}; + +/* STI blockmove structs */ + +struct sti_blkmv_flags { + u32 wait : 1; /* should routine idle wait or not */ + u32 color : 1; /* change color during move? */ + u32 clear : 1; /* clear during move? */ + u32 non_text : 1; /* block move in non_text planes =1, text =0 */ + u32 pad : 28; /* pad to word boundary */ + u32 future_ptr; /* pointer to future data */ +}; + +struct sti_blkmv_inptr { + u8 fg_color; /* foreground color after move */ + u8 bg_color; /* background color after move */ + s16 src_x; /* source upper left pixel x location */ + s16 src_y; /* source upper left pixel y location */ + s16 dest_x; /* dest upper left pixel x location */ + s16 dest_y; /* dest upper left pixel y location */ + s16 width; /* block width in pixels */ + s16 height; /* block height in pixels */ + u32 future_ptr; /* pointer to future data */ +}; + +struct sti_blkmv_outptr { + s32 errno; /* error number on failure */ + u32 future_ptr; /* pointer to future data */ +}; + + +/* sti_all_data is an internal struct which needs to be allocated in + * low memory (< 4GB) if STI is used with 32bit STI on a 64bit kernel */ + +struct sti_all_data { + struct sti_glob_cfg glob_cfg; + struct sti_glob_cfg_ext glob_cfg_ext; + + struct sti_conf_inptr inq_inptr; + struct sti_conf_outptr inq_outptr; /* configuration */ + struct sti_conf_outptr_ext inq_outptr_ext; + + struct sti_init_inptr_ext init_inptr_ext; + struct sti_init_inptr init_inptr; + struct sti_init_outptr init_outptr; + + struct sti_blkmv_inptr blkmv_inptr; + struct sti_blkmv_outptr blkmv_outptr; + + struct sti_font_inptr font_inptr; + struct sti_font_outptr font_outptr; + + /* leave as last entries */ + unsigned long save_addr[1024 / sizeof(unsigned long)]; + /* min 256 bytes which is STI default, max sti->sti_mem_request */ + unsigned long sti_mem_addr[256 / sizeof(unsigned long)]; + /* do not add something below here ! */ +}; + +/* internal generic STI struct */ + +struct sti_struct { + spinlock_t lock; + + /* the following fields needs to be filled in by the word/byte routines */ + int font_width; + int font_height; + /* char **mon_strings; */ + int sti_mem_request; + u32 graphics_id[2]; + + struct sti_cooked_rom *rom; + + unsigned long font_unpmv; + unsigned long block_move; + unsigned long init_graph; + unsigned long inq_conf; + + /* all following fields are initialized by the generic routines */ + int text_planes; + region_t regions[STI_REGION_MAX]; + unsigned long regions_phys[STI_REGION_MAX]; + + struct sti_glob_cfg *glob_cfg; /* points into sti_all_data */ + + struct sti_cooked_font *font; /* ptr to selected font (cooked) */ + + struct pci_dev *pd; + + /* PCI data structures (pg. 17ff from sti.pdf) */ + u8 rm_entry[16]; /* pci region mapper array == pci config space offset */ + + /* pointer to the fb_info where this STI device is used */ + struct fb_info *info; + + /* pointer to all internal data */ + struct sti_all_data *sti_data; +}; + + +/* sticore interface functions */ + +struct sti_struct *sti_get_rom(unsigned int index); /* 0: default sti */ + + +/* sticore main function to call STI firmware */ + +int sti_call(const struct sti_struct *sti, unsigned long func, + const void *flags, void *inptr, void *outptr, + struct sti_glob_cfg *glob_cfg); + + +/* functions to call the STI ROM directly */ + +void sti_putc(struct sti_struct *sti, int c, int y, int x); +void sti_set(struct sti_struct *sti, int src_y, int src_x, + int height, int width, u8 color); +void sti_clear(struct sti_struct *sti, int src_y, int src_x, + int height, int width, int c); +void sti_bmove(struct sti_struct *sti, int src_y, int src_x, + int dst_y, int dst_x, int height, int width); + +#endif /* STICORE_H */ |