1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _UVESAFB_H 3 #define _UVESAFB_H 4 5 #include <uapi/video/uvesafb.h> 6 7 8 /* VBE CRTC Info Block */ 9 struct vbe_crtc_ib { 10 u16 horiz_total; 11 u16 horiz_start; 12 u16 horiz_end; 13 u16 vert_total; 14 u16 vert_start; 15 u16 vert_end; 16 u8 flags; 17 u32 pixel_clock; 18 u16 refresh_rate; 19 u8 reserved[40]; 20 } __attribute__ ((packed)); 21 22 #define VBE_MODE_VGACOMPAT 0x20 23 #define VBE_MODE_COLOR 0x08 24 #define VBE_MODE_SUPPORTEDHW 0x01 25 #define VBE_MODE_GRAPHICS 0x10 26 #define VBE_MODE_LFB 0x80 27 28 #define VBE_MODE_MASK (VBE_MODE_COLOR | VBE_MODE_SUPPORTEDHW | \ 29 VBE_MODE_GRAPHICS | VBE_MODE_LFB) 30 31 /* VBE Mode Info Block */ 32 struct vbe_mode_ib { 33 /* for all VBE revisions */ 34 u16 mode_attr; 35 u8 winA_attr; 36 u8 winB_attr; 37 u16 win_granularity; 38 u16 win_size; 39 u16 winA_seg; 40 u16 winB_seg; 41 u32 win_func_ptr; 42 u16 bytes_per_scan_line; 43 44 /* for VBE 1.2+ */ 45 u16 x_res; 46 u16 y_res; 47 u8 x_char_size; 48 u8 y_char_size; 49 u8 planes; 50 u8 bits_per_pixel; 51 u8 banks; 52 u8 memory_model; 53 u8 bank_size; 54 u8 image_pages; 55 u8 reserved1; 56 57 /* Direct color fields for direct/6 and YUV/7 memory models. */ 58 /* Offsets are bit positions of lsb in the mask. */ 59 u8 red_len; 60 u8 red_off; 61 u8 green_len; 62 u8 green_off; 63 u8 blue_len; 64 u8 blue_off; 65 u8 rsvd_len; 66 u8 rsvd_off; 67 u8 direct_color_info; /* direct color mode attributes */ 68 69 /* for VBE 2.0+ */ 70 u32 phys_base_ptr; 71 u8 reserved2[6]; 72 73 /* for VBE 3.0+ */ 74 u16 lin_bytes_per_scan_line; 75 u8 bnk_image_pages; 76 u8 lin_image_pages; 77 u8 lin_red_len; 78 u8 lin_red_off; 79 u8 lin_green_len; 80 u8 lin_green_off; 81 u8 lin_blue_len; 82 u8 lin_blue_off; 83 u8 lin_rsvd_len; 84 u8 lin_rsvd_off; 85 u32 max_pixel_clock; 86 u16 mode_id; 87 u8 depth; 88 } __attribute__ ((packed)); 89 90 #define UVESAFB_DEFAULT_MODE "640x480-16" 91 92 /* How long to wait for a reply from userspace [ms] */ 93 #define UVESAFB_TIMEOUT 5000 94 95 /* Max number of concurrent tasks */ 96 #define UVESAFB_TASKS_MAX 16 97 98 #define dac_reg (0x3c8) 99 #define dac_val (0x3c9) 100 101 struct uvesafb_pal_entry { 102 u_char blue, green, red, pad; 103 } __attribute__ ((packed)); 104 105 struct uvesafb_ktask { 106 struct uvesafb_task t; 107 void *buf; 108 struct completion *done; 109 u32 ack; 110 }; 111 112 static int uvesafb_exec(struct uvesafb_ktask *tsk); 113 114 #define UVESAFB_EXACT_RES 1 115 #define UVESAFB_EXACT_DEPTH 2 116 117 struct uvesafb_par { 118 struct vbe_ib vbe_ib; /* VBE Info Block */ 119 struct vbe_mode_ib *vbe_modes; /* list of supported VBE modes */ 120 int vbe_modes_cnt; 121 122 u8 nocrtc; 123 u8 ypan; /* 0 - nothing, 1 - ypan, 2 - ywrap */ 124 u8 pmi_setpal; /* PMI for palette changes */ 125 u16 *pmi_base; /* protected mode interface location */ 126 void *pmi_start; 127 void *pmi_pal; 128 u8 *vbe_state_orig; /* 129 * original hardware state, before the 130 * driver was loaded 131 */ 132 u8 *vbe_state_saved; /* state saved by fb_save_state */ 133 int vbe_state_size; 134 atomic_t ref_count; 135 136 int mode_idx; 137 struct vbe_crtc_ib crtc; 138 int mtrr_handle; 139 }; 140 141 #endif /* _UVESAFB_H */ 142