cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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svga.h (3837B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2#ifndef _LINUX_SVGA_H
      3#define _LINUX_SVGA_H
      4
      5#include <linux/pci.h>
      6#include <video/vga.h>
      7
      8/* Terminator for register set */
      9
     10#define VGA_REGSET_END_VAL	0xFF
     11#define VGA_REGSET_END		{VGA_REGSET_END_VAL, 0, 0}
     12
     13struct vga_regset {
     14	u8 regnum;
     15	u8 lowbit;
     16	u8 highbit;
     17};
     18
     19/* ------------------------------------------------------------------------- */
     20
     21#define SVGA_FORMAT_END_VAL	0xFFFF
     22#define SVGA_FORMAT_END		{SVGA_FORMAT_END_VAL, {0, 0, 0}, {0, 0, 0}, {0, 0, 0}, {0, 0, 0}, 0, 0, 0, 0, 0, 0}
     23
     24struct svga_fb_format {
     25	/* var part */
     26	u32 bits_per_pixel;
     27	struct fb_bitfield red;
     28	struct fb_bitfield green;
     29	struct fb_bitfield blue;
     30	struct fb_bitfield transp;
     31	u32 nonstd;
     32	/* fix part */
     33	u32 type;
     34	u32 type_aux;
     35	u32 visual;
     36	u32 xpanstep;
     37	u32 xresstep;
     38};
     39
     40struct svga_timing_regs {
     41	const struct vga_regset *h_total_regs;
     42	const struct vga_regset *h_display_regs;
     43	const struct vga_regset *h_blank_start_regs;
     44	const struct vga_regset *h_blank_end_regs;
     45	const struct vga_regset *h_sync_start_regs;
     46	const struct vga_regset *h_sync_end_regs;
     47
     48	const struct vga_regset *v_total_regs;
     49	const struct vga_regset *v_display_regs;
     50	const struct vga_regset *v_blank_start_regs;
     51	const struct vga_regset *v_blank_end_regs;
     52	const struct vga_regset *v_sync_start_regs;
     53	const struct vga_regset *v_sync_end_regs;
     54};
     55
     56struct svga_pll {
     57	u16 m_min;
     58	u16 m_max;
     59	u16 n_min;
     60	u16 n_max;
     61	u16 r_min;
     62	u16 r_max;  /* r_max < 32 */
     63	u32 f_vco_min;
     64	u32 f_vco_max;
     65	u32 f_base;
     66};
     67
     68
     69/* Write a value to the attribute register */
     70
     71static inline void svga_wattr(void __iomem *regbase, u8 index, u8 data)
     72{
     73	vga_r(regbase, VGA_IS1_RC);
     74	vga_w(regbase, VGA_ATT_IW, index);
     75	vga_w(regbase, VGA_ATT_W, data);
     76}
     77
     78/* Write a value to a sequence register with a mask */
     79
     80static inline void svga_wseq_mask(void __iomem *regbase, u8 index, u8 data, u8 mask)
     81{
     82	vga_wseq(regbase, index, (data & mask) | (vga_rseq(regbase, index) & ~mask));
     83}
     84
     85/* Write a value to a CRT register with a mask */
     86
     87static inline void svga_wcrt_mask(void __iomem *regbase, u8 index, u8 data, u8 mask)
     88{
     89	vga_wcrt(regbase, index, (data & mask) | (vga_rcrt(regbase, index) & ~mask));
     90}
     91
     92static inline int svga_primary_device(struct pci_dev *dev)
     93{
     94	u16 flags;
     95	pci_read_config_word(dev, PCI_COMMAND, &flags);
     96	return (flags & PCI_COMMAND_IO);
     97}
     98
     99
    100void svga_wcrt_multi(void __iomem *regbase, const struct vga_regset *regset, u32 value);
    101void svga_wseq_multi(void __iomem *regbase, const struct vga_regset *regset, u32 value);
    102
    103void svga_set_default_gfx_regs(void __iomem *regbase);
    104void svga_set_default_atc_regs(void __iomem *regbase);
    105void svga_set_default_seq_regs(void __iomem *regbase);
    106void svga_set_default_crt_regs(void __iomem *regbase);
    107void svga_set_textmode_vga_regs(void __iomem *regbase);
    108
    109void svga_settile(struct fb_info *info, struct fb_tilemap *map);
    110void svga_tilecopy(struct fb_info *info, struct fb_tilearea *area);
    111void svga_tilefill(struct fb_info *info, struct fb_tilerect *rect);
    112void svga_tileblit(struct fb_info *info, struct fb_tileblit *blit);
    113void svga_tilecursor(void __iomem *regbase, struct fb_info *info, struct fb_tilecursor *cursor);
    114int svga_get_tilemax(struct fb_info *info);
    115void svga_get_caps(struct fb_info *info, struct fb_blit_caps *caps,
    116		   struct fb_var_screeninfo *var);
    117
    118int svga_compute_pll(const struct svga_pll *pll, u32 f_wanted, u16 *m, u16 *n, u16 *r, int node);
    119int svga_check_timings(const struct svga_timing_regs *tm, struct fb_var_screeninfo *var, int node);
    120void svga_set_timings(void __iomem *regbase, const struct svga_timing_regs *tm, struct fb_var_screeninfo *var, u32 hmul, u32 hdiv, u32 vmul, u32 vdiv, u32 hborder, int node);
    121
    122int svga_match_format(const struct svga_fb_format *frm, struct fb_var_screeninfo *var, struct fb_fix_screeninfo *fix);
    123
    124#endif /* _LINUX_SVGA_H */
    125