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1#ifndef _UVESAFB_H
2#define _UVESAFB_H
3
4#include <linux/types.h>
5
6struct 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
32struct 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 */
44struct 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 */
63struct 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 */
86struct 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
155struct uvesafb_pal_entry {
156 u_char blue, green, red, pad;
157} __attribute__ ((packed));
158
159struct uvesafb_ktask {
160 struct uvesafb_task t;
161 void *buf;
162 struct completion *done;
163 u32 ack;
164};
165
166static int uvesafb_exec(struct uvesafb_ktask *tsk);
167
168#define UVESAFB_EXACT_RES 1
169#define UVESAFB_EXACT_DEPTH 2
170
171struct 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 */
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 */
9struct 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 */
32struct 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
101struct uvesafb_pal_entry {
102 u_char blue, green, red, pad;
103} __attribute__ ((packed));
104
105struct uvesafb_ktask {
106 struct uvesafb_task t;
107 void *buf;
108 struct completion *done;
109 u32 ack;
110};
111
112static int uvesafb_exec(struct uvesafb_ktask *tsk);
113
114#define UVESAFB_EXACT_RES 1
115#define UVESAFB_EXACT_DEPTH 2
116
117struct 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 */