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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, pm_message_t 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__ */ |