128 lines
4.6 KiB
C
128 lines
4.6 KiB
C
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/*-*- linux-c -*-
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* linux/drivers/video/i810fb_main.h -- Intel 810 frame buffer device
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* main header file
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*
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* Copyright (C) 2001 Antonino Daplas<adaplas@pol.net>
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* All Rights Reserved
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*
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file COPYING in the main directory of this archive for
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* more details.
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*/
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#ifndef __I810_MAIN_H__
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#define __I810_MAIN_H__
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static int __devinit i810fb_init_pci (struct pci_dev *dev,
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const struct pci_device_id *entry);
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static void __exit i810fb_remove_pci(struct pci_dev *dev);
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static int i810fb_resume(struct pci_dev *dev);
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static int i810fb_suspend(struct pci_dev *dev, pm_message_t state);
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/*
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* voffset - framebuffer offset in MiB from aperture start address. In order for
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* the driver to work with X, we must try to use memory holes left untouched by X. The
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* following table lists where X's different surfaces start at.
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*
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* ---------------------------------------------
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* : : 64 MiB : 32 MiB :
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* ----------------------------------------------
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* : FrontBuffer : 0 : 0 :
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* : DepthBuffer : 48 : 16 :
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* : BackBuffer : 56 : 24 :
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* ----------------------------------------------
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*
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* So for chipsets with 64 MiB Aperture sizes, 32 MiB for v_offset is okay, allowing up to
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* 15 + 1 MiB of Framebuffer memory. For 32 MiB Aperture sizes, a v_offset of 8 MiB should
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* work, allowing 7 + 1 MiB of Framebuffer memory.
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* Note, the size of the hole may change depending on how much memory you allocate to X,
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* and how the memory is split up between these surfaces.
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*
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* Note: Anytime the DepthBuffer or FrontBuffer is overlapped, X would still run but with
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* DRI disabled. But if the Frontbuffer is overlapped, X will fail to load.
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*
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* Experiment with v_offset to find out which works best for you.
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*/
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static u32 v_offset_default __initdata; /* For 32 MiB Aper size, 8 should be the default */
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static u32 voffset __initdata = 0;
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static int i810fb_cursor(struct fb_info *info, struct fb_cursor *cursor);
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/* Chipset Specific Functions */
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static int i810fb_set_par (struct fb_info *info);
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static int i810fb_getcolreg (u8 regno, u8 *red, u8 *green, u8 *blue,
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u8 *transp, struct fb_info *info);
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static int i810fb_setcolreg (unsigned regno, unsigned red, unsigned green, unsigned blue,
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unsigned transp, struct fb_info *info);
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static int i810fb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info);
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static int i810fb_blank (int blank_mode, struct fb_info *info);
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/* Initialization */
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static void i810fb_release_resource (struct fb_info *info, struct i810fb_par *par);
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extern int __init agp_intel_init(void);
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/* Video Timings */
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extern void round_off_xres (u32 *xres);
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extern void round_off_yres (u32 *xres, u32 *yres);
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extern u32 i810_get_watermark (const struct fb_var_screeninfo *var,
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struct i810fb_par *par);
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extern void i810fb_encode_registers(const struct fb_var_screeninfo *var,
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struct i810fb_par *par, u32 xres, u32 yres);
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extern void i810fb_fill_var_timings(struct fb_var_screeninfo *var);
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/* Accelerated Functions */
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extern void i810fb_fillrect (struct fb_info *p,
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const struct fb_fillrect *rect);
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extern void i810fb_copyarea (struct fb_info *p,
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const struct fb_copyarea *region);
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extern void i810fb_imageblit(struct fb_info *p, const struct fb_image *image);
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extern int i810fb_sync (struct fb_info *p);
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extern void i810fb_init_ringbuffer(struct fb_info *info);
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extern void i810fb_load_front (u32 offset, struct fb_info *info);
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/* Conditionals */
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#ifdef CONFIG_X86
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inline void flush_cache(void)
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{
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asm volatile ("wbinvd":::"memory");
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}
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#else
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#define flush_cache() do { } while(0)
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#endif
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#ifdef CONFIG_MTRR
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#define KERNEL_HAS_MTRR 1
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static inline void __devinit set_mtrr(struct i810fb_par *par)
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{
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par->mtrr_reg = mtrr_add((u32) par->aperture.physical,
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par->aperture.size, MTRR_TYPE_WRCOMB, 1);
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if (par->mtrr_reg < 0) {
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printk(KERN_ERR "set_mtrr: unable to set MTRR\n");
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return;
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}
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par->dev_flags |= HAS_MTRR;
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}
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static inline void unset_mtrr(struct i810fb_par *par)
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{
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if (par->dev_flags & HAS_MTRR)
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mtrr_del(par->mtrr_reg, (u32) par->aperture.physical,
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par->aperture.size);
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}
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#else
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#define KERNEL_HAS_MTRR 0
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#define set_mtrr(x) printk("set_mtrr: MTRR is disabled in the kernel\n")
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#define unset_mtrr(x) do { } while (0)
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#endif /* CONFIG_MTRR */
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#ifdef CONFIG_FB_I810_GTF
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#define IS_DVT (0)
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#else
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#define IS_DVT (1)
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#endif
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#endif /* __I810_MAIN_H__ */
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