// SPDX-License-Identifier: GPL-2.0-only /* * * tdfxfb.c * * Author: Hannu Mallat <[email protected]> * * Copyright © 1999 Hannu Mallat * All rights reserved * * Created : Thu Sep 23 18:17:43 1999, hmallat * Last modified: Tue Nov 2 21:19:47 1999, hmallat * * I2C part copied from the i2c-voodoo3.c driver by: * Frodo Looijaard <[email protected]>, * Philip Edelbrock <[email protected]>, * Ralph Metzler <[email protected]>, and * Mark D. Studebaker <[email protected]> * * Lots of the information here comes from the Daryll Strauss' Banshee * patches to the XF86 server, and the rest comes from the 3dfx * Banshee specification. I'm very much indebted to Daryll for his * work on the X server. * * Voodoo3 support was contributed Harold Oga. Lots of additions * (proper acceleration, 24 bpp, hardware cursor) and bug fixes by Attila * Kesmarki. Thanks guys! * * Voodoo1 and Voodoo2 support aren't relevant to this driver as they * behave very differently from the Voodoo3/4/5. For anyone wanting to * use frame buffer on the Voodoo1/2, see the sstfb driver (which is * located at http://www.sourceforge.net/projects/sstfb). * * While I _am_ grateful to 3Dfx for releasing the specs for Banshee, * I do wish the next version is a bit more complete. Without the XF86 * patches I couldn't have gotten even this far... for instance, the * extensions to the VGA register set go completely unmentioned in the * spec! Also, lots of references are made to the 'SST core', but no * spec is publicly available, AFAIK. * * The structure of this driver comes pretty much from the Permedia * driver by Ilario Nardinocchi, which in turn is based on skeletonfb. * * TODO: * - multihead support (basically need to support an array of fb_infos) * - support other architectures (PPC, Alpha); does the fact that the VGA * core can be accessed only thru I/O (not memory mapped) complicate * things? * * Version history: * * 0.1.4 (released 2002-05-28) ported over to new fbdev api by James Simmons * * 0.1.3 (released 1999-11-02) added Attila's panning support, code * reorg, hwcursor address page size alignment * (for mmapping both frame buffer and regs), * and my changes to get rid of hardcoded * VGA i/o register locations (uses PCI * configuration info now) * 0.1.2 (released 1999-10-19) added Attila Kesmarki's bug fixes and * improvements * 0.1.1 (released 1999-10-07) added Voodoo3 support by Harold Oga. * 0.1.0 (released 1999-10-06) initial version * */ #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/fb.h> #include <linux/init.h> #include <linux/pci.h> #include <asm/io.h> #include <video/tdfx.h> #define DPRINTK(a, b...) … #define BANSHEE_MAX_PIXCLOCK … #define VOODOO3_MAX_PIXCLOCK … #define VOODOO5_MAX_PIXCLOCK … static const struct fb_fix_screeninfo tdfx_fix = …; static const struct fb_var_screeninfo tdfx_var = …; /* * PCI driver prototypes */ static int tdfxfb_probe(struct pci_dev *pdev, const struct pci_device_id *id); static void tdfxfb_remove(struct pci_dev *pdev); static const struct pci_device_id tdfxfb_id_table[] = …; static struct pci_driver tdfxfb_driver = …; MODULE_DEVICE_TABLE(pci, tdfxfb_id_table); /* * Driver data */ static int nopan; static int nowrap = …; /* not implemented (yet) */ static int hwcursor = …; static char *mode_option; static bool nomtrr; /* ------------------------------------------------------------------------- * Hardware-specific funcions * ------------------------------------------------------------------------- */ static inline u8 vga_inb(struct tdfx_par *par, u32 reg) { … } static inline void vga_outb(struct tdfx_par *par, u32 reg, u8 val) { … } static inline void gra_outb(struct tdfx_par *par, u32 idx, u8 val) { … } static inline void seq_outb(struct tdfx_par *par, u32 idx, u8 val) { … } static inline u8 seq_inb(struct tdfx_par *par, u32 idx) { … } static inline void crt_outb(struct tdfx_par *par, u32 idx, u8 val) { … } static inline u8 crt_inb(struct tdfx_par *par, u32 idx) { … } static inline void att_outb(struct tdfx_par *par, u32 idx, u8 val) { … } static inline void vga_disable_video(struct tdfx_par *par) { … } static inline void vga_enable_video(struct tdfx_par *par) { … } static inline void vga_enable_palette(struct tdfx_par *par) { … } static inline u32 tdfx_inl(struct tdfx_par *par, unsigned int reg) { … } static inline void tdfx_outl(struct tdfx_par *par, unsigned int reg, u32 val) { … } static inline void banshee_make_room(struct tdfx_par *par, int size) { … } static int banshee_wait_idle(struct fb_info *info) { … } /* * Set the color of a palette entry in 8bpp mode */ static inline void do_setpalentry(struct tdfx_par *par, unsigned regno, u32 c) { … } static u32 do_calc_pll(int freq, int *freq_out) { … } static void do_write_regs(struct fb_info *info, struct banshee_reg *reg) { … } static unsigned long do_lfb_size(struct tdfx_par *par, unsigned short dev_id) { … } /* ------------------------------------------------------------------------- */ static int tdfxfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info) { … } static int tdfxfb_set_par(struct fb_info *info) { … } /* A handy macro shamelessly pinched from matroxfb */ #define CNVT_TOHW(val, width) … static int tdfxfb_setcolreg(unsigned regno, unsigned red, unsigned green, unsigned blue, unsigned transp, struct fb_info *info) { … } /* 0 unblank, 1 blank, 2 no vsync, 3 no hsync, 4 off */ static int tdfxfb_blank(int blank, struct fb_info *info) { … } /* * Set the starting position of the visible screen to var->yoffset */ static int tdfxfb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info) { … } #ifdef CONFIG_FB_3DFX_ACCEL /* * FillRect 2D command (solidfill or invert (via ROP_XOR)) */ static void tdfxfb_fillrect(struct fb_info *info, const struct fb_fillrect *rect) { … } /* * Screen-to-Screen BitBlt 2D command (for the bmove fb op.) */ static void tdfxfb_copyarea(struct fb_info *info, const struct fb_copyarea *area) { … } static void tdfxfb_imageblit(struct fb_info *info, const struct fb_image *image) { … } #endif /* CONFIG_FB_3DFX_ACCEL */ static int tdfxfb_cursor(struct fb_info *info, struct fb_cursor *cursor) { … } static const struct fb_ops tdfxfb_ops = …; #ifdef CONFIG_FB_3DFX_I2C /* The voo GPIO registers don't have individual masks for each bit so we always have to read before writing. */ static void tdfxfb_i2c_setscl(void *data, int val) { … } static void tdfxfb_i2c_setsda(void *data, int val) { … } /* The GPIO pins are open drain, so the pins always remain outputs. We rely on the i2c-algo-bit routines to set the pins high before reading the input from other chips. */ static int tdfxfb_i2c_getscl(void *data) { … } static int tdfxfb_i2c_getsda(void *data) { … } static void tdfxfb_ddc_setscl(void *data, int val) { … } static void tdfxfb_ddc_setsda(void *data, int val) { … } static int tdfxfb_ddc_getscl(void *data) { … } static int tdfxfb_ddc_getsda(void *data) { … } static int tdfxfb_setup_ddc_bus(struct tdfxfb_i2c_chan *chan, const char *name, struct device *dev) { … } static int tdfxfb_setup_i2c_bus(struct tdfxfb_i2c_chan *chan, const char *name, struct device *dev) { … } static void tdfxfb_create_i2c_busses(struct fb_info *info) { … } static void tdfxfb_delete_i2c_busses(struct tdfx_par *par) { … } static int tdfxfb_probe_i2c_connector(struct tdfx_par *par, struct fb_monspecs *specs) { … } #endif /* CONFIG_FB_3DFX_I2C */ /** * tdfxfb_probe - Device Initializiation * * @pdev: PCI Device to initialize * @id: PCI Device ID * * Initializes and allocates resources for PCI device @pdev. * */ static int tdfxfb_probe(struct pci_dev *pdev, const struct pci_device_id *id) { … } #ifndef MODULE static void __init tdfxfb_setup(char *options) { … } #endif /** * tdfxfb_remove - Device removal * * @pdev: PCI Device to cleanup * * Releases all resources allocated during the course of the driver's * lifetime for the PCI device @pdev. * */ static void tdfxfb_remove(struct pci_dev *pdev) { … } static int __init tdfxfb_init(void) { … } static void __exit tdfxfb_exit(void) { … } MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …; module_param(hwcursor, int, 0644); MODULE_PARM_DESC(…) …; module_param(mode_option, charp, 0); MODULE_PARM_DESC(…) …; module_param(nomtrr, bool, 0); MODULE_PARM_DESC(…) …; module_init(…) …; module_exit(tdfxfb_exit);
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