cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

uvesafb.h (2920B)

      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 */