1#ifndef _UVESAFB_H 2#define _UVESAFB_H 3 4struct 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 30struct 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 */ 42struct 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 */ 61struct 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 */ 84struct 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 153struct uvesafb_pal_entry { 154 u_char blue, green, red, pad; 155} __attribute__ ((packed)); 156 157struct uvesafb_ktask { 158 struct uvesafb_task t; 159 void *buf; 160 struct completion *done; 161 u32 ack; 162}; 163 164static int uvesafb_exec(struct uvesafb_ktask *tsk); 165 166#define UVESAFB_EXACT_RES 1 167#define UVESAFB_EXACT_DEPTH 2 168 169struct 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 */ 194