include/video/uvesafb.h

   1 #ifndef _UVESAFB_H
   2 #define _UVESAFB_H
   3
   4 struct v86_regs {
   5         __u32 ebx;
   6         __u32 ecx;
   7         __u32 edx;
   8         __u32 esi;
   9         __u32 edi;
  10         __u32 ebp;
  11         __u32 eax;
  12         __u32 eip;
  13         __u32 eflags;
  14         __u32 esp;
  15         __u16 cs;
  16         __u16 ss;
  17         __u16 es;
  18         __u16 ds;
  19         __u16 fs;
  20         __u16 gs;
  21 };
  22
  23 /* Task flags */
  24 #define TF_VBEIB        0x01
  25 #define TF_BUF_ESDI     0x02
  26 #define TF_BUF_ESBX     0x04
  27 #define TF_BUF_RET      0x08
  28 #define TF_EXIT         0x10
  29
  30 struct uvesafb_task {
  31         __u8 flags;
  32         int buf_len;
  33         struct v86_regs regs;
  34 };
  35
  36 /* Constants for the capabilities field
  37  * in vbe_ib */
  38 #define VBE_CAP_CAN_SWITCH_DAC  0x01
  39 #define VBE_CAP_VGACOMPAT       0x02
  40
  41 /* The VBE Info Block */
  42 struct vbe_ib {
  43         char  vbe_signature[4];
  44         __u16 vbe_version;
  45         __u32 oem_string_ptr;
  46         __u32 capabilities;
  47         __u32 mode_list_ptr;
  48         __u16 total_memory;
  49         __u16 oem_software_rev;
  50         __u32 oem_vendor_name_ptr;
  51         __u32 oem_product_name_ptr;
  52         __u32 oem_product_rev_ptr;
  53         __u8  reserved[222];
  54         char  oem_data[256];
  55         char  misc_data[512];
  56 } __attribute__ ((packed));
  57
  58 #ifdef __KERNEL__
  59
  60 /* VBE CRTC Info Block */
  61 struct vbe_crtc_ib {
  62         u16 horiz_total;
  63         u16 horiz_start;
  64         u16 horiz_end;
  65         u16 vert_total;
  66         u16 vert_start;
  67         u16 vert_end;
  68         u8  flags;
  69         u32 pixel_clock;
  70         u16 refresh_rate;
  71         u8  reserved[40];
  72 } __attribute__ ((packed));
  73
  74 #define VBE_MODE_VGACOMPAT      0x20
  75 #define VBE_MODE_COLOR          0x08
  76 #define VBE_MODE_SUPPORTEDHW    0x01
  77 #define VBE_MODE_GRAPHICS       0x10
  78 #define VBE_MODE_LFB            0x80
  79
  80 #define VBE_MODE_MASK           (VBE_MODE_COLOR | VBE_MODE_SUPPORTEDHW | \
  81                                 VBE_MODE_GRAPHICS | VBE_MODE_LFB)
  82
  83 /* VBE Mode Info Block */
  84 struct vbe_mode_ib {
  85         /* for all VBE revisions */
  86         u16 mode_attr;
  87         u8  winA_attr;
  88         u8  winB_attr;
  89         u16 win_granularity;
  90         u16 win_size;
  91         u16 winA_seg;
  92         u16 winB_seg;
  93         u32 win_func_ptr;
  94         u16 bytes_per_scan_line;
  95
  96         /* for VBE 1.2+ */
  97         u16 x_res;
  98         u16 y_res;
  99         u8  x_char_size;
 100         u8  y_char_size;
 101         u8  planes;
 102         u8  bits_per_pixel;
 103         u8  banks;
 104         u8  memory_model;
 105         u8  bank_size;
 106         u8  image_pages;
 107         u8  reserved1;
 108
 109         /* Direct color fields for direct/6 and YUV/7 memory models. */
 110         /* Offsets are bit positions of lsb in the mask. */
 111         u8  red_len;
 112         u8  red_off;
 113         u8  green_len;
 114         u8  green_off;
 115         u8  blue_len;
 116         u8  blue_off;
 117         u8  rsvd_len;
 118         u8  rsvd_off;
 119         u8  direct_color_info;  /* direct color mode attributes */
 120
 121         /* for VBE 2.0+ */
 122         u32 phys_base_ptr;
 123         u8  reserved2[6];
 124
 125         /* for VBE 3.0+ */
 126         u16 lin_bytes_per_scan_line;
 127         u8  bnk_image_pages;
 128         u8  lin_image_pages;
 129         u8  lin_red_len;
 130         u8  lin_red_off;
 131         u8  lin_green_len;
 132         u8  lin_green_off;
 133         u8  lin_blue_len;
 134         u8  lin_blue_off;
 135         u8  lin_rsvd_len;
 136         u8  lin_rsvd_off;
 137         u32 max_pixel_clock;
 138         u16 mode_id;
 139         u8  depth;
 140 } __attribute__ ((packed));
 141
 142 #define UVESAFB_DEFAULT_MODE "640x480-16"
 143
 144 /* How long to wait for a reply from userspace [ms] */
 145 #define UVESAFB_TIMEOUT 5000
 146
 147 /* Max number of concurrent tasks */
 148 #define UVESAFB_TASKS_MAX 16
 149
 150 #define dac_reg (0x3c8)
 151 #define dac_val (0x3c9)
 152
 153 struct uvesafb_pal_entry {
 154         u_char blue, green, red, pad;
 155 } __attribute__ ((packed));
 156
 157 struct uvesafb_ktask {
 158         struct uvesafb_task t;
 159         void *buf;
 160         struct completion *done;
 161         u32 ack;
 162 };
 163
 164 static int uvesafb_exec(struct uvesafb_ktask *tsk);
 165
 166 #define UVESAFB_EXACT_RES       1
 167 #define UVESAFB_EXACT_DEPTH     2
 168
 169 struct uvesafb_par {
 170         struct vbe_ib vbe_ib;           /* VBE Info Block */
 171         struct vbe_mode_ib *vbe_modes;  /* list of supported VBE modes */
 172         int vbe_modes_cnt;
 173
 174         u8 nocrtc;
 175         u8 ypan;                        /* 0 - nothing, 1 - ypan, 2 - ywrap */
 176         u8 pmi_setpal;                  /* PMI for palette changes */
 177         u16 *pmi_base;                  /* protected mode interface location */
 178         void *pmi_start;
 179         void *pmi_pal;
 180         u8 *vbe_state_orig;             /*
 181                                          * original hardware state, before the
 182                                          * driver was loaded
 183                                          */
 184         u8 *vbe_state_saved;            /* state saved by fb_save_state */
 185         int vbe_state_size;
 186         atomic_t ref_count;
 187
 188         int mode_idx;
 189         struct vbe_crtc_ib crtc;
 190 };
 191
 192 #endif /* __KERNEL__ */
 193 #endif /* _UVESAFB_H */