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Diffstat (limited to 'include/video/uvesafb.h')
| -rw-r--r-- | include/video/uvesafb.h | 193 |
1 files changed, 193 insertions, 0 deletions
diff --git a/include/video/uvesafb.h b/include/video/uvesafb.h new file mode 100644 index 00000000000..95bcef19395 --- /dev/null +++ b/include/video/uvesafb.h @@ -0,0 +1,193 @@ +#ifndef _UVESAFB_H +#define _UVESAFB_H + +struct v86_regs { + __u32 ebx; + __u32 ecx; + __u32 edx; + __u32 esi; + __u32 edi; + __u32 ebp; + __u32 eax; + __u32 eip; + __u32 eflags; + __u32 esp; + __u16 cs; + __u16 ss; + __u16 es; + __u16 ds; + __u16 fs; + __u16 gs; +}; + +/* Task flags */ +#define TF_VBEIB 0x01 +#define TF_BUF_ESDI 0x02 +#define TF_BUF_ESBX 0x04 +#define TF_BUF_RET 0x08 +#define TF_EXIT 0x10 + +struct uvesafb_task { + __u8 flags; + int buf_len; + struct v86_regs regs; +}; + +/* Constants for the capabilities field + * in vbe_ib */ +#define VBE_CAP_CAN_SWITCH_DAC 0x01 +#define VBE_CAP_VGACOMPAT 0x02 + +/* The VBE Info Block */ +struct vbe_ib { + char vbe_signature[4]; + __u16 vbe_version; + __u32 oem_string_ptr; + __u32 capabilities; + __u32 mode_list_ptr; + __u16 total_memory; + __u16 oem_software_rev; + __u32 oem_vendor_name_ptr; + __u32 oem_product_name_ptr; + __u32 oem_product_rev_ptr; + __u8 reserved[222]; + char oem_data[256]; + char misc_data[512]; +} __attribute__ ((packed)); + +#ifdef __KERNEL__ + +/* VBE CRTC Info Block */ +struct vbe_crtc_ib { + u16 horiz_total; + u16 horiz_start; + u16 horiz_end; + u16 vert_total; + u16 vert_start; + u16 vert_end; + u8 flags; + u32 pixel_clock; + u16 refresh_rate; + u8 reserved[40]; +} __attribute__ ((packed)); + +#define VBE_MODE_VGACOMPAT 0x20 +#define VBE_MODE_COLOR 0x08 +#define VBE_MODE_SUPPORTEDHW 0x01 +#define VBE_MODE_GRAPHICS 0x10 +#define VBE_MODE_LFB 0x80 + +#define VBE_MODE_MASK (VBE_MODE_COLOR | VBE_MODE_SUPPORTEDHW | \ + VBE_MODE_GRAPHICS | VBE_MODE_LFB) + +/* VBE Mode Info Block */ +struct vbe_mode_ib { + /* for all VBE revisions */ + u16 mode_attr; + u8 winA_attr; + u8 winB_attr; + u16 win_granularity; + u16 win_size; + u16 winA_seg; + u16 winB_seg; + u32 win_func_ptr; + u16 bytes_per_scan_line; + + /* for VBE 1.2+ */ + u16 x_res; + u16 y_res; + u8 x_char_size; + u8 y_char_size; + u8 planes; + u8 bits_per_pixel; + u8 banks; + u8 memory_model; + u8 bank_size; + u8 image_pages; + u8 reserved1; + + /* Direct color fields for direct/6 and YUV/7 memory models. */ + /* Offsets are bit positions of lsb in the mask. */ + u8 red_len; + u8 red_off; + u8 green_len; + u8 green_off; + u8 blue_len; + u8 blue_off; + u8 rsvd_len; + u8 rsvd_off; + u8 direct_color_info; /* direct color mode attributes */ + + /* for VBE 2.0+ */ + u32 phys_base_ptr; + u8 reserved2[6]; + + /* for VBE 3.0+ */ + u16 lin_bytes_per_scan_line; + u8 bnk_image_pages; + u8 lin_image_pages; + u8 lin_red_len; + u8 lin_red_off; + u8 lin_green_len; + u8 lin_green_off; + u8 lin_blue_len; + u8 lin_blue_off; + u8 lin_rsvd_len; + u8 lin_rsvd_off; + u32 max_pixel_clock; + u16 mode_id; + u8 depth; +} __attribute__ ((packed)); + +#define UVESAFB_DEFAULT_MODE "640x480-16" + +/* How long to wait for a reply from userspace [ms] */ +#define UVESAFB_TIMEOUT 5000 + +/* Max number of concurrent tasks */ +#define UVESAFB_TASKS_MAX 16 + +#define dac_reg (0x3c8) +#define dac_val (0x3c9) + +struct uvesafb_pal_entry { + u_char blue, green, red, pad; +} __attribute__ ((packed)); + +struct uvesafb_ktask { + struct uvesafb_task t; + void *buf; + struct completion *done; + u32 ack; +}; + +static int uvesafb_exec(struct uvesafb_ktask *tsk); + +#define UVESAFB_EXACT_RES 1 +#define UVESAFB_EXACT_DEPTH 2 + +struct uvesafb_par { + struct vbe_ib vbe_ib; /* VBE Info Block */ + struct vbe_mode_ib *vbe_modes; /* list of supported VBE modes */ + int vbe_modes_cnt; + + u8 nocrtc; + u8 ypan; /* 0 - nothing, 1 - ypan, 2 - ywrap */ + u8 pmi_setpal; /* PMI for palette changes */ + u16 *pmi_base; /* protected mode interface location */ + void *pmi_start; + void *pmi_pal; + u8 *vbe_state_orig; /* + * original hardware state, before the + * driver was loaded + */ + u8 *vbe_state_saved; /* state saved by fb_save_state */ + int vbe_state_size; + atomic_t ref_count; + + int mode_idx; + struct vbe_crtc_ib crtc; +}; + +#endif /* __KERNEL__ */ +#endif /* _UVESAFB_H */ |