/* * linux/drivers/video/savagefb.c -- S3 Savage Framebuffer Driver * * Copyright (c) 2001-2002 Denis Oliver Kropp <[email protected]> * Sven Neumann <[email protected]> * * * Card specific code is based on XFree86's savage driver. * Framebuffer framework code is based on code of cyber2000fb and tdfxfb. * * This file is subject to the terms and conditions of the GNU General * Public License. See the file COPYING in the main directory of this * archive for more details. * * 0.4.0 (neo) * - hardware accelerated clear and move * * 0.3.2 (dok) * - wait for vertical retrace before writing to cr67 * at the beginning of savagefb_set_par * - use synchronization registers cr23 and cr26 * * 0.3.1 (dok) * - reset 3D engine * - don't return alpha bits for 32bit format * * 0.3.0 (dok) * - added WaitIdle functions for all Savage types * - do WaitIdle before mode switching * - code cleanup * * 0.2.0 (dok) * - first working version * * * TODO * - clock validations in decode_var * * BUGS * - white margin on bootup * */ #include <linux/aperture.h> #include <linux/module.h> #include <linux/kernel.h> #include <linux/errno.h> #include <linux/string.h> #include <linux/mm.h> #include <linux/slab.h> #include <linux/delay.h> #include <linux/fb.h> #include <linux/pci.h> #include <linux/init.h> #include <linux/console.h> #include <asm/io.h> #include <asm/irq.h> #include "savagefb.h" #define SAVAGEFB_VERSION … /* --------------------------------------------------------------------- */ static char *mode_option = …; #ifdef MODULE MODULE_AUTHOR("(c) 2001-2002 Denis Oliver Kropp <[email protected]>"); MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("FBDev driver for S3 Savage PCI/AGP Chips"); #endif /* --------------------------------------------------------------------- */ static void vgaHWSeqReset(struct savagefb_par *par, int start) { … } static void vgaHWProtect(struct savagefb_par *par, int on) { … } static void vgaHWRestore(struct savagefb_par *par, struct savage_reg *reg) { … } static void vgaHWInit(struct fb_var_screeninfo *var, struct savagefb_par *par, struct xtimings *timings, struct savage_reg *reg) { … } /* -------------------- Hardware specific routines ------------------------- */ /* * Hardware Acceleration for SavageFB */ /* Wait for fifo space */ static void savage3D_waitfifo(struct savagefb_par *par, int space) { … } static void savage4_waitfifo(struct savagefb_par *par, int space) { … } static void savage2000_waitfifo(struct savagefb_par *par, int space) { … } /* Wait for idle accelerator */ static void savage3D_waitidle(struct savagefb_par *par) { … } static void savage4_waitidle(struct savagefb_par *par) { … } static void savage2000_waitidle(struct savagefb_par *par) { … } #ifdef CONFIG_FB_SAVAGE_ACCEL static void SavageSetup2DEngine(struct savagefb_par *par) { … } static void savagefb_set_clip(struct fb_info *info) { … } #else static void SavageSetup2DEngine(struct savagefb_par *par) {} #endif static void SavageCalcClock(long freq, int min_m, int min_n1, int max_n1, int min_n2, int max_n2, long freq_min, long freq_max, unsigned int *mdiv, unsigned int *ndiv, unsigned int *r) { … } static int common_calc_clock(long freq, int min_m, int min_n1, int max_n1, int min_n2, int max_n2, long freq_min, long freq_max, unsigned char *mdiv, unsigned char *ndiv) { … } #ifdef SAVAGEFB_DEBUG /* This function is used to debug, it prints out the contents of s3 regs */ static void SavagePrintRegs(struct savagefb_par *par) { unsigned char i; int vgaCRIndex = 0x3d4; int vgaCRReg = 0x3d5; printk(KERN_DEBUG "SR x0 x1 x2 x3 x4 x5 x6 x7 x8 x9 xA xB xC xD xE " "xF"); for (i = 0; i < 0x70; i++) { if (!(i % 16)) printk(KERN_DEBUG "\nSR%xx ", i >> 4); vga_out8(0x3c4, i, par); printk(KERN_DEBUG " %02x", vga_in8(0x3c5, par)); } printk(KERN_DEBUG "\n\nCR x0 x1 x2 x3 x4 x5 x6 x7 x8 x9 xA xB xC " "xD xE xF"); for (i = 0; i < 0xB7; i++) { if (!(i % 16)) printk(KERN_DEBUG "\nCR%xx ", i >> 4); vga_out8(vgaCRIndex, i, par); printk(KERN_DEBUG " %02x", vga_in8(vgaCRReg, par)); } printk(KERN_DEBUG "\n\n"); } #endif /* --------------------------------------------------------------------- */ static void savage_get_default_par(struct savagefb_par *par, struct savage_reg *reg) { … } static void savage_set_default_par(struct savagefb_par *par, struct savage_reg *reg) { … } static void savage_update_var(struct fb_var_screeninfo *var, const struct fb_videomode *modedb) { … } static int savagefb_check_var(struct fb_var_screeninfo *var, struct fb_info *info) { … } static int savagefb_decode_var(struct fb_var_screeninfo *var, struct savagefb_par *par, struct savage_reg *reg) { … } /* --------------------------------------------------------------------- */ /* * Set a single color register. Return != 0 for invalid regno. */ static int savagefb_setcolreg(unsigned regno, unsigned red, unsigned green, unsigned blue, unsigned transp, struct fb_info *info) { … } static void savagefb_set_par_int(struct savagefb_par *par, struct savage_reg *reg) { … } static void savagefb_update_start(struct savagefb_par *par, int base) { … } static void savagefb_set_fix(struct fb_info *info) { … } static int savagefb_set_par(struct fb_info *info) { … } /* * Pan or Wrap the Display */ static int savagefb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info) { … } static int savagefb_blank(int blank, struct fb_info *info) { … } static int savagefb_open(struct fb_info *info, int user) { … } static int savagefb_release(struct fb_info *info, int user) { … } static const struct fb_ops savagefb_ops = …; /* --------------------------------------------------------------------- */ static const struct fb_var_screeninfo savagefb_var800x600x8 = …; static void savage_enable_mmio(struct savagefb_par *par) { … } static void savage_disable_mmio(struct savagefb_par *par) { … } static int savage_map_mmio(struct fb_info *info) { … } static void savage_unmap_mmio(struct fb_info *info) { … } static int savage_map_video(struct fb_info *info, int video_len) { … } static void savage_unmap_video(struct fb_info *info) { … } static int savage_init_hw(struct savagefb_par *par) { … } static int savage_init_fb_info(struct fb_info *info, struct pci_dev *dev, const struct pci_device_id *id) { … } /* --------------------------------------------------------------------- */ static int savagefb_probe(struct pci_dev *dev, const struct pci_device_id *id) { … } static void savagefb_remove(struct pci_dev *dev) { … } static int savagefb_suspend_late(struct device *dev, pm_message_t mesg) { … } static int __maybe_unused savagefb_suspend(struct device *dev) { … } static int __maybe_unused savagefb_hibernate(struct device *dev) { … } static int __maybe_unused savagefb_freeze(struct device *dev) { … } static int __maybe_unused savagefb_resume(struct device *dev) { … } static const struct dev_pm_ops savagefb_pm_ops = …; static const struct pci_device_id savagefb_devices[] = …; MODULE_DEVICE_TABLE(pci, savagefb_devices); static struct pci_driver savagefb_driver = …; /* **************************** exit-time only **************************** */ static void __exit savage_done(void) { … } /* ************************* init in-kernel code ************************** */ static int __init savagefb_setup(char *options) { … } static int __init savagefb_init(void) { … } module_init(…) …; module_exit(savage_done); module_param(mode_option, charp, 0); MODULE_PARM_DESC(…) …;
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