Linux Kernel  3.7.1
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
uvesafb.h
Go to the documentation of this file.
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 */
Generated on Thu Jan 10 2013 14:53:58 for Linux Kernel by   doxygen 1.8.2