root/include/video/uvesafb.h

INCLUDED FROM

#ifndef _UVESAFB_H
#define _UVESAFB_H

#include <uapi/video/uvesafb.h>


/* 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;
        int mtrr_handle;
};

#endif /* _UVESAFB_H */