1 /*-*- linux-c -*-
2 * linux/drivers/video/i810fb_main.h -- Intel 810 frame buffer device
3 * main header file
4 *
5 * Copyright (C) 2001 Antonino Daplas<adaplas@pol.net>
6 * All Rights Reserved
7 *
8 *
9 * This file is subject to the terms and conditions of the GNU General Public
10 * License. See the file COPYING in the main directory of this archive for
11 * more details.
12 */
13
14 #ifndef __I810_MAIN_H__
15 #define __I810_MAIN_H__
16
17 static int __devinit i810fb_init_pci (struct pci_dev *dev,
18 const struct pci_device_id *entry);
19 static void __exit i810fb_remove_pci(struct pci_dev *dev);
20 static int i810fb_resume(struct pci_dev *dev);
21 static int i810fb_suspend(struct pci_dev *dev, u32 state);
22
23 /*
24 * voffset - framebuffer offset in MiB from aperture start address. In order for
25 * the driver to work with X, we must try to use memory holes left untouched by X. The
26 * following table lists where X's different surfaces start at.
27 *
28 * ---------------------------------------------
29 * : : 64 MiB : 32 MiB :
30 * ----------------------------------------------
31 * : FrontBuffer : 0 : 0 :
32 * : DepthBuffer : 48 : 16 :
33 * : BackBuffer : 56 : 24 :
34 * ----------------------------------------------
35 *
36 * So for chipsets with 64 MiB Aperture sizes, 32 MiB for v_offset is okay, allowing up to
37 * 15 + 1 MiB of Framebuffer memory. For 32 MiB Aperture sizes, a v_offset of 8 MiB should
38 * work, allowing 7 + 1 MiB of Framebuffer memory.
39 * Note, the size of the hole may change depending on how much memory you allocate to X,
40 * and how the memory is split up between these surfaces.
41 *
42 * Note: Anytime the DepthBuffer or FrontBuffer is overlapped, X would still run but with
43 * DRI disabled. But if the Frontbuffer is overlapped, X will fail to load.
44 *
45 * Experiment with v_offset to find out which works best for you.
46 */
47 static u32 v_offset_default __initdata; /* For 32 MiB Aper size, 8 should be the default */
48 static u32 voffset __initdata = 0;
49
50 static int i810fb_cursor(struct fb_info *info, struct fb_cursor *cursor);
51
52 /* Chipset Specific Functions */
53 static int i810fb_set_par (struct fb_info *info);
54 static int i810fb_getcolreg (u8 regno, u8 *red, u8 *green, u8 *blue,
55 u8 *transp, struct fb_info *info);
56 static int i810fb_setcolreg (unsigned regno, unsigned red, unsigned green, unsigned blue,
57 unsigned transp, struct fb_info *info);
58 static int i810fb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info);
59 static int i810fb_blank (int blank_mode, struct fb_info *info);
60
61 /* Initialization */
62 static void i810fb_release_resource (struct fb_info *info, struct i810fb_par *par);
63 extern int __init agp_intel_init(void);
64
65
66 /* Video Timings */
67 extern void round_off_xres (u32 *xres);
68 extern void round_off_yres (u32 *xres, u32 *yres);
69 extern u32 i810_get_watermark (const struct fb_var_screeninfo *var,
70 struct i810fb_par *par);
71 extern void i810fb_encode_registers(const struct fb_var_screeninfo *var,
72 struct i810fb_par *par, u32 xres, u32 yres);
73 extern void i810fb_fill_var_timings(struct fb_var_screeninfo *var);
74
75 /* Accelerated Functions */
76 extern void i810fb_fillrect (struct fb_info *p,
77 const struct fb_fillrect *rect);
78 extern void i810fb_copyarea (struct fb_info *p,
79 const struct fb_copyarea *region);
80 extern void i810fb_imageblit(struct fb_info *p, const struct fb_image *image);
81 extern int i810fb_sync (struct fb_info *p);
82
83 extern void i810fb_init_ringbuffer(struct fb_info *info);
84 extern void i810fb_load_front (u32 offset, struct fb_info *info);
85
86 /* Conditionals */
87 #ifdef CONFIG_X86
88 inline void flush_cache(void)
89 {
90 asm volatile ("wbinvd":::"memory");
91 }
92 #else
93 #define flush_cache() do { } while(0)
94 #endif
95
96 #ifdef CONFIG_MTRR
97 #define KERNEL_HAS_MTRR 1
98 static inline void __devinit set_mtrr(struct i810fb_par *par)
99 {
100 par->mtrr_reg = mtrr_add((u32) par->aperture.physical,
101 par->aperture.size, MTRR_TYPE_WRCOMB, 1);
102 if (par->mtrr_reg < 0) {
103 printk(KERN_ERR "set_mtrr: unable to set MTRR\n");
104 return;
105 }
106 par->dev_flags |= HAS_MTRR;
107 }
108 static inline void unset_mtrr(struct i810fb_par *par)
109 {
110 if (par->dev_flags & HAS_MTRR)
111 mtrr_del(par->mtrr_reg, (u32) par->aperture.physical,
112 par->aperture.size);
113 }
114 #else
115 #define KERNEL_HAS_MTRR 0
116 #define set_mtrr(x) printk("set_mtrr: MTRR is disabled in the kernel\n")
117
118 #define unset_mtrr(x) do { } while (0)
119 #endif /* CONFIG_MTRR */
120
121 #ifdef CONFIG_FB_I810_GTF
122 #define IS_DVT (0)
123 #else
124 #define IS_DVT (1)
125 #endif
126
127 #endif /* __I810_MAIN_H__ */
128
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