1 #ifndef _UVESAFB_H 2 #define _UVESAFB_H 3 4 #include <linux/types.h> 5 6 struct v86_regs { 7 __u32 ebx; 8 __u32 ecx; 9 __u32 edx; 10 __u32 esi; 11 __u32 edi; 12 __u32 ebp; 13 __u32 eax; 14 __u32 eip; 15 __u32 eflags; 16 __u32 esp; 17 __u16 cs; 18 __u16 ss; 19 __u16 es; 20 __u16 ds; 21 __u16 fs; 22 __u16 gs; 23 }; 24 25 /* Task flags */ 26 #define TF_VBEIB 0x01 27 #define TF_BUF_ESDI 0x02 28 #define TF_BUF_ESBX 0x04 29 #define TF_BUF_RET 0x08 30 #define TF_EXIT 0x10 31 32 struct uvesafb_task { 33 __u8 flags; 34 int buf_len; 35 struct v86_regs regs; 36 }; 37 38 /* Constants for the capabilities field 39 * in vbe_ib */ 40 #define VBE_CAP_CAN_SWITCH_DAC 0x01 41 #define VBE_CAP_VGACOMPAT 0x02 42 43 /* The VBE Info Block */ 44 struct vbe_ib { 45 char vbe_signature[4]; 46 __u16 vbe_version; 47 __u32 oem_string_ptr; 48 __u32 capabilities; 49 __u32 mode_list_ptr; 50 __u16 total_memory; 51 __u16 oem_software_rev; 52 __u32 oem_vendor_name_ptr; 53 __u32 oem_product_name_ptr; 54 __u32 oem_product_rev_ptr; 55 __u8 reserved[222]; 56 char oem_data[256]; 57 char misc_data[512]; 58 } __attribute__ ((packed)); 59 60 #ifdef __KERNEL__ 61 62 /* VBE CRTC Info Block */ 63 struct vbe_crtc_ib { 64 u16 horiz_total; 65 u16 horiz_start; 66 u16 horiz_end; 67 u16 vert_total; 68 u16 vert_start; 69 u16 vert_end; 70 u8 flags; 71 u32 pixel_clock; 72 u16 refresh_rate; 73 u8 reserved[40]; 74 } __attribute__ ((packed)); 75 76 #define VBE_MODE_VGACOMPAT 0x20 77 #define VBE_MODE_COLOR 0x08 78 #define VBE_MODE_SUPPORTEDHW 0x01 79 #define VBE_MODE_GRAPHICS 0x10 80 #define VBE_MODE_LFB 0x80 81 82 #define VBE_MODE_MASK (VBE_MODE_COLOR | VBE_MODE_SUPPORTEDHW | \ 83 VBE_MODE_GRAPHICS | VBE_MODE_LFB) 84 85 /* VBE Mode Info Block */ 86 struct vbe_mode_ib { 87 /* for all VBE revisions */ 88 u16 mode_attr; 89 u8 winA_attr; 90 u8 winB_attr; 91 u16 win_granularity; 92 u16 win_size; 93 u16 winA_seg; 94 u16 winB_seg; 95 u32 win_func_ptr; 96 u16 bytes_per_scan_line; 97 98 /* for VBE 1.2+ */ 99 u16 x_res; 100 u16 y_res; 101 u8 x_char_size; 102 u8 y_char_size; 103 u8 planes; 104 u8 bits_per_pixel; 105 u8 banks; 106 u8 memory_model; 107 u8 bank_size; 108 u8 image_pages; 109 u8 reserved1; 110 111 /* Direct color fields for direct/6 and YUV/7 memory models. */ 112 /* Offsets are bit positions of lsb in the mask. */ 113 u8 red_len; 114 u8 red_off; 115 u8 green_len; 116 u8 green_off; 117 u8 blue_len; 118 u8 blue_off; 119 u8 rsvd_len; 120 u8 rsvd_off; 121 u8 direct_color_info; /* direct color mode attributes */ 122 123 /* for VBE 2.0+ */ 124 u32 phys_base_ptr; 125 u8 reserved2[6]; 126 127 /* for VBE 3.0+ */ 128 u16 lin_bytes_per_scan_line; 129 u8 bnk_image_pages; 130 u8 lin_image_pages; 131 u8 lin_red_len; 132 u8 lin_red_off; 133 u8 lin_green_len; 134 u8 lin_green_off; 135 u8 lin_blue_len; 136 u8 lin_blue_off; 137 u8 lin_rsvd_len; 138 u8 lin_rsvd_off; 139 u32 max_pixel_clock; 140 u16 mode_id; 141 u8 depth; 142 } __attribute__ ((packed)); 143 144 #define UVESAFB_DEFAULT_MODE "640x480-16" 145 146 /* How long to wait for a reply from userspace [ms] */ 147 #define UVESAFB_TIMEOUT 5000 148 149 /* Max number of concurrent tasks */ 150 #define UVESAFB_TASKS_MAX 16 151 152 #define dac_reg (0x3c8) 153 #define dac_val (0x3c9) 154 155 struct uvesafb_pal_entry { 156 u_char blue, green, red, pad; 157 } __attribute__ ((packed)); 158 159 struct uvesafb_ktask { 160 struct uvesafb_task t; 161 void *buf; 162 struct completion *done; 163 u32 ack; 164 }; 165 166 static int uvesafb_exec(struct uvesafb_ktask *tsk); 167 168 #define UVESAFB_EXACT_RES 1 169 #define UVESAFB_EXACT_DEPTH 2 170 171 struct uvesafb_par { 172 struct vbe_ib vbe_ib; /* VBE Info Block */ 173 struct vbe_mode_ib *vbe_modes; /* list of supported VBE modes */ 174 int vbe_modes_cnt; 175 176 u8 nocrtc; 177 u8 ypan; /* 0 - nothing, 1 - ypan, 2 - ywrap */ 178 u8 pmi_setpal; /* PMI for palette changes */ 179 u16 *pmi_base; /* protected mode interface location */ 180 void *pmi_start; 181 void *pmi_pal; 182 u8 *vbe_state_orig; /* 183 * original hardware state, before the 184 * driver was loaded 185 */ 186 u8 *vbe_state_saved; /* state saved by fb_save_state */ 187 int vbe_state_size; 188 atomic_t ref_count; 189 190 int mode_idx; 191 struct vbe_crtc_ib crtc; 192 }; 193 194 #endif /* __KERNEL__ */ 195 #endif /* _UVESAFB_H */ 196