diff options
Diffstat (limited to 'drivers/video/cirrusfb.c')
| -rw-r--r-- | drivers/video/cirrusfb.c | 3342 |
1 files changed, 0 insertions, 3342 deletions
diff --git a/drivers/video/cirrusfb.c b/drivers/video/cirrusfb.c deleted file mode 100644 index c14b2435d23..00000000000 --- a/drivers/video/cirrusfb.c +++ /dev/null @@ -1,3342 +0,0 @@ -/* - * drivers/video/cirrusfb.c - driver for Cirrus Logic chipsets - * - * Copyright 1999-2001 Jeff Garzik <jgarzik@pobox.com> - * - * Contributors (thanks, all!) - * - * David Eger: - * Overhaul for Linux 2.6 - * - * Jeff Rugen: - * Major contributions; Motorola PowerStack (PPC and PCI) support, - * GD54xx, 1280x1024 mode support, change MCLK based on VCLK. - * - * Geert Uytterhoeven: - * Excellent code review. - * - * Lars Hecking: - * Amiga updates and testing. - * - * Original cirrusfb author: Frank Neumann - * - * Based on retz3fb.c and cirrusfb.c: - * Copyright (C) 1997 Jes Sorensen - * Copyright (C) 1996 Frank Neumann - * - *************************************************************** - * - * Format this code with GNU indent '-kr -i8 -pcs' options. - * - * 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. - * - */ - -#define CIRRUSFB_VERSION "2.0-pre2" - -#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/init.h> -#include <asm/pgtable.h> - -#ifdef CONFIG_ZORRO -#include <linux/zorro.h> -#endif -#ifdef CONFIG_PCI -#include <linux/pci.h> -#endif -#ifdef CONFIG_AMIGA -#include <asm/amigahw.h> -#endif -#ifdef CONFIG_PPC_PREP -#include <asm/machdep.h> -#define isPReP machine_is(prep) -#else -#define isPReP 0 -#endif - -#include <video/vga.h> -#include <video/cirrus.h> - -/***************************************************************** - * - * debugging and utility macros - * - */ - -/* enable debug output? */ -/* #define CIRRUSFB_DEBUG 1 */ - -/* disable runtime assertions? */ -/* #define CIRRUSFB_NDEBUG */ - -/* debug output */ -#ifdef CIRRUSFB_DEBUG -#define DPRINTK(fmt, args...) \ - printk(KERN_DEBUG "%s: " fmt, __func__ , ## args) -#else -#define DPRINTK(fmt, args...) -#endif - -/* debugging assertions */ -#ifndef CIRRUSFB_NDEBUG -#define assert(expr) \ - if (!(expr)) { \ - printk("Assertion failed! %s,%s,%s,line=%d\n", \ - #expr, __FILE__, __func__, __LINE__); \ - } -#else -#define assert(expr) -#endif - -#define MB_ (1024 * 1024) - -/***************************************************************** - * - * chipset information - * - */ - -/* board types */ -enum cirrus_board { - BT_NONE = 0, - BT_SD64, - BT_PICCOLO, - BT_PICASSO, - BT_SPECTRUM, - BT_PICASSO4, /* GD5446 */ - BT_ALPINE, /* GD543x/4x */ - BT_GD5480, - BT_LAGUNA, /* GD546x */ -}; - -/* - * per-board-type information, used for enumerating and abstracting - * chip-specific information - * NOTE: MUST be in the same order as enum cirrus_board in order to - * use direct indexing on this array - * NOTE: '__initdata' cannot be used as some of this info - * is required at runtime. Maybe separate into an init-only and - * a run-time table? - */ -static const struct cirrusfb_board_info_rec { - char *name; /* ASCII name of chipset */ - long maxclock[5]; /* maximum video clock */ - /* for 1/4bpp, 8bpp 15/16bpp, 24bpp, 32bpp - numbers from xorg code */ - bool init_sr07 : 1; /* init SR07 during init_vgachip() */ - bool init_sr1f : 1; /* write SR1F during init_vgachip() */ - /* construct bit 19 of screen start address */ - bool scrn_start_bit19 : 1; - - /* initial SR07 value, then for each mode */ - unsigned char sr07; - unsigned char sr07_1bpp; - unsigned char sr07_1bpp_mux; - unsigned char sr07_8bpp; - unsigned char sr07_8bpp_mux; - - unsigned char sr1f; /* SR1F VGA initial register value */ -} cirrusfb_board_info[] = { - [BT_SD64] = { - .name = "CL SD64", - .maxclock = { - /* guess */ - /* the SD64/P4 have a higher max. videoclock */ - 140000, 140000, 140000, 140000, 140000, - }, - .init_sr07 = true, - .init_sr1f = true, - .scrn_start_bit19 = true, - .sr07 = 0xF0, - .sr07_1bpp = 0xF0, - .sr07_8bpp = 0xF1, - .sr1f = 0x20 - }, - [BT_PICCOLO] = { - .name = "CL Piccolo", - .maxclock = { - /* guess */ - 90000, 90000, 90000, 90000, 90000 - }, - .init_sr07 = true, - .init_sr1f = true, - .scrn_start_bit19 = false, - .sr07 = 0x80, - .sr07_1bpp = 0x80, - .sr07_8bpp = 0x81, - .sr1f = 0x22 - }, - [BT_PICASSO] = { - .name = "CL Picasso", - .maxclock = { - /* guess */ - 90000, 90000, 90000, 90000, 90000 - }, - .init_sr07 = true, - .init_sr1f = true, - .scrn_start_bit19 = false, - .sr07 = 0x20, - .sr07_1bpp = 0x20, - .sr07_8bpp = 0x21, - .sr1f = 0x22 - }, - [BT_SPECTRUM] = { - .name = "CL Spectrum", - .maxclock = { - /* guess */ - 90000, 90000, 90000, 90000, 90000 - }, - .init_sr07 = true, - .init_sr1f = true, - .scrn_start_bit19 = false, - .sr07 = 0x80, - .sr07_1bpp = 0x80, - .sr07_8bpp = 0x81, - .sr1f = 0x22 - }, - [BT_PICASSO4] = { - .name = "CL Picasso4", - .maxclock = { - 135100, 135100, 85500, 85500, 0 - }, - .init_sr07 = true, - .init_sr1f = false, - .scrn_start_bit19 = true, - .sr07 = 0x20, - .sr07_1bpp = 0x20, - .sr07_8bpp = 0x21, - .sr1f = 0 - }, - [BT_ALPINE] = { - .name = "CL Alpine", - .maxclock = { - /* for the GD5430. GD5446 can do more... */ - 85500, 85500, 50000, 28500, 0 - }, - .init_sr07 = true, - .init_sr1f = true, - .scrn_start_bit19 = true, - .sr07 = 0xA0, - .sr07_1bpp = 0xA1, - .sr07_1bpp_mux = 0xA7, - .sr07_8bpp = 0xA1, - .sr07_8bpp_mux = 0xA7, - .sr1f = 0x1C - }, - [BT_GD5480] = { - .name = "CL GD5480", - .maxclock = { - 135100, 200000, 200000, 135100, 135100 - }, - .init_sr07 = true, - .init_sr1f = true, - .scrn_start_bit19 = true, - .sr07 = 0x10, - .sr07_1bpp = 0x11, - .sr07_8bpp = 0x11, - .sr1f = 0x1C - }, - [BT_LAGUNA] = { - .name = "CL Laguna", - .maxclock = { - /* guess */ - 135100, 135100, 135100, 135100, 135100, - }, - .init_sr07 = false, - .init_sr1f = false, - .scrn_start_bit19 = true, - } -}; - -#ifdef CONFIG_PCI -#define CHIP(id, btype) \ - { PCI_VENDOR_ID_CIRRUS, id, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (btype) } - -static struct pci_device_id cirrusfb_pci_table[] = { - CHIP(PCI_DEVICE_ID_CIRRUS_5436, BT_ALPINE), - CHIP(PCI_DEVICE_ID_CIRRUS_5434_8, BT_ALPINE), - CHIP(PCI_DEVICE_ID_CIRRUS_5434_4, BT_ALPINE), - CHIP(PCI_DEVICE_ID_CIRRUS_5430, BT_ALPINE), /* GD-5440 is same id */ - CHIP(PCI_DEVICE_ID_CIRRUS_7543, BT_ALPINE), - CHIP(PCI_DEVICE_ID_CIRRUS_7548, BT_ALPINE), - CHIP(PCI_DEVICE_ID_CIRRUS_5480, BT_GD5480), /* MacPicasso likely */ - CHIP(PCI_DEVICE_ID_CIRRUS_5446, BT_PICASSO4), /* Picasso 4 is 5446 */ - CHIP(PCI_DEVICE_ID_CIRRUS_5462, BT_LAGUNA), /* CL Laguna */ - CHIP(PCI_DEVICE_ID_CIRRUS_5464, BT_LAGUNA), /* CL Laguna 3D */ - CHIP(PCI_DEVICE_ID_CIRRUS_5465, BT_LAGUNA), /* CL Laguna 3DA*/ - { 0, } -}; -MODULE_DEVICE_TABLE(pci, cirrusfb_pci_table); -#undef CHIP -#endif /* CONFIG_PCI */ - -#ifdef CONFIG_ZORRO -static const struct zorro_device_id cirrusfb_zorro_table[] = { - { - .id = ZORRO_PROD_HELFRICH_SD64_RAM, - .driver_data = BT_SD64, - }, { - .id = ZORRO_PROD_HELFRICH_PICCOLO_RAM, - .driver_data = BT_PICCOLO, - }, { - .id = ZORRO_PROD_VILLAGE_TRONIC_PICASSO_II_II_PLUS_RAM, - .driver_data = BT_PICASSO, - }, { - .id = ZORRO_PROD_GVP_EGS_28_24_SPECTRUM_RAM, - .driver_data = BT_SPECTRUM, - }, { - .id = ZORRO_PROD_VILLAGE_TRONIC_PICASSO_IV_Z3, - .driver_data = BT_PICASSO4, - }, - { 0 } -}; - -static const struct { - zorro_id id2; - unsigned long size; -} cirrusfb_zorro_table2[] = { - [BT_SD64] = { - .id2 = ZORRO_PROD_HELFRICH_SD64_REG, - .size = 0x400000 - }, - [BT_PICCOLO] = { - .id2 = ZORRO_PROD_HELFRICH_PICCOLO_REG, - .size = 0x200000 - }, - [BT_PICASSO] = { - .id2 = ZORRO_PROD_VILLAGE_TRONIC_PICASSO_II_II_PLUS_REG, - .size = 0x200000 - }, - [BT_SPECTRUM] = { - .id2 = ZORRO_PROD_GVP_EGS_28_24_SPECTRUM_REG, - .size = 0x200000 - }, - [BT_PICASSO4] = { - .id2 = 0, - .size = 0x400000 - } -}; -#endif /* CONFIG_ZORRO */ - -struct cirrusfb_regs { - long freq; - long nom; - long den; - long div; - long multiplexing; - long mclk; - long divMCLK; - - long HorizRes; /* The x resolution in pixel */ - long HorizTotal; - long HorizDispEnd; - long HorizBlankStart; - long HorizBlankEnd; - long HorizSyncStart; - long HorizSyncEnd; - - long VertRes; /* the physical y resolution in scanlines */ - long VertTotal; - long VertDispEnd; - long VertSyncStart; - long VertSyncEnd; - long VertBlankStart; - long VertBlankEnd; -}; - -#ifdef CIRRUSFB_DEBUG -enum cirrusfb_dbg_reg_class { - CRT, - SEQ -}; -#endif /* CIRRUSFB_DEBUG */ - -/* info about board */ -struct cirrusfb_info { - u8 __iomem *regbase; - enum cirrus_board btype; - unsigned char SFR; /* Shadow of special function register */ - - struct cirrusfb_regs currentmode; - int blank_mode; - - u32 pseudo_palette[16]; - -#ifdef CONFIG_ZORRO - struct zorro_dev *zdev; -#endif -#ifdef CONFIG_PCI - struct pci_dev *pdev; -#endif - void (*unmap)(struct fb_info *info); -}; - -static unsigned cirrusfb_def_mode = 1; -static int noaccel; - -/* - * Predefined Video Modes - */ - -static const struct { - const char *name; - struct fb_var_screeninfo var; -} cirrusfb_predefined[] = { - { - /* autodetect mode */ - .name = "Autodetect", - }, { - /* 640x480, 31.25 kHz, 60 Hz, 25 MHz PixClock */ - .name = "640x480", - .var = { - .xres = 640, - .yres = 480, - .xres_virtual = 640, - .yres_virtual = 480, - .bits_per_pixel = 8, - .red = { .length = 8 }, - .green = { .length = 8 }, - .blue = { .length = 8 }, - .width = -1, - .height = -1, - .pixclock = 40000, - .left_margin = 48, - .right_margin = 16, - .upper_margin = 32, - .lower_margin = 8, - .hsync_len = 96, - .vsync_len = 4, - .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, - .vmode = FB_VMODE_NONINTERLACED - } - }, { - /* 800x600, 48 kHz, 76 Hz, 50 MHz PixClock */ - .name = "800x600", - .var = { - .xres = 800, - .yres = 600, - .xres_virtual = 800, - .yres_virtual = 600, - .bits_per_pixel = 8, - .red = { .length = 8 }, - .green = { .length = 8 }, - .blue = { .length = 8 }, - .width = -1, - .height = -1, - .pixclock = 20000, - .left_margin = 128, - .right_margin = 16, - .upper_margin = 24, - .lower_margin = 2, - .hsync_len = 96, - .vsync_len = 6, - .vmode = FB_VMODE_NONINTERLACED - } - }, { - /* - * Modeline from XF86Config: - * Mode "1024x768" 80 1024 1136 1340 1432 768 770 774 805 - */ - /* 1024x768, 55.8 kHz, 70 Hz, 80 MHz PixClock */ - .name = "1024x768", - .var = { - .xres = 1024, - .yres = 768, - .xres_virtual = 1024, - .yres_virtual = 768, - .bits_per_pixel = 8, - .red = { .length = 8 }, - .green = { .length = 8 }, - .blue = { .length = 8 }, - .width = -1, - .height = -1, - .pixclock = 12500, - .left_margin = 144, - .right_margin = 32, - .upper_margin = 30, - .lower_margin = 2, - .hsync_len = 192, - .vsync_len = 6, - .vmode = FB_VMODE_NONINTERLACED - } - } -}; - -#define NUM_TOTAL_MODES ARRAY_SIZE(cirrusfb_predefined) - -/****************************************************************************/ -/**** BEGIN PROTOTYPES ******************************************************/ - -/*--- Interface used by the world ------------------------------------------*/ -static int cirrusfb_init(void); -#ifndef MODULE -static int cirrusfb_setup(char *options); -#endif - -static int cirrusfb_open(struct fb_info *info, int user); -static int cirrusfb_release(struct fb_info *info, int user); -static int cirrusfb_setcolreg(unsigned regno, unsigned red, unsigned green, - unsigned blue, unsigned transp, - struct fb_info *info); -static int cirrusfb_check_var(struct fb_var_screeninfo *var, - struct fb_info *info); -static int cirrusfb_set_par(struct fb_info *info); -static int cirrusfb_pan_display(struct fb_var_screeninfo *var, - struct fb_info *info); -static int cirrusfb_blank(int blank_mode, struct fb_info *info); -static void cirrusfb_fillrect(struct fb_info *info, - const struct fb_fillrect *region); -static void cirrusfb_copyarea(struct fb_info *info, - const struct fb_copyarea *area); -static void cirrusfb_imageblit(struct fb_info *info, - const struct fb_image *image); - -/* function table of the above functions */ -static struct fb_ops cirrusfb_ops = { - .owner = THIS_MODULE, - .fb_open = cirrusfb_open, - .fb_release = cirrusfb_release, - .fb_setcolreg = cirrusfb_setcolreg, - .fb_check_var = cirrusfb_check_var, - .fb_set_par = cirrusfb_set_par, - .fb_pan_display = cirrusfb_pan_display, - .fb_blank = cirrusfb_blank, - .fb_fillrect = cirrusfb_fillrect, - .fb_copyarea = cirrusfb_copyarea, - .fb_imageblit = cirrusfb_imageblit, -}; - -/*--- Hardware Specific Routines -------------------------------------------*/ -static int cirrusfb_decode_var(const struct fb_var_screeninfo *var, - struct cirrusfb_regs *regs, - struct fb_info *info); -/*--- Internal routines ----------------------------------------------------*/ -static void init_vgachip(struct fb_info *info); -static void switch_monitor(struct cirrusfb_info *cinfo, int on); -static void WGen(const struct cirrusfb_info *cinfo, - int regnum, unsigned char val); -static unsigned char RGen(const struct cirrusfb_info *cinfo, int regnum); -static void AttrOn(const struct cirrusfb_info *cinfo); -static void WHDR(const struct cirrusfb_info *cinfo, unsigned char val); -static void WSFR(struct cirrusfb_info *cinfo, unsigned char val); -static void WSFR2(struct cirrusfb_info *cinfo, unsigned char val); -static void WClut(struct cirrusfb_info *cinfo, unsigned char regnum, - unsigned char red, unsigned char green, unsigned char blue); -#if 0 -static void RClut(struct cirrusfb_info *cinfo, unsigned char regnum, - unsigned char *red, unsigned char *green, - unsigned char *blue); -#endif -static void cirrusfb_WaitBLT(u8 __iomem *regbase); -static void cirrusfb_BitBLT(u8 __iomem *regbase, int bits_per_pixel, - u_short curx, u_short cury, - u_short destx, u_short desty, - u_short width, u_short height, - u_short line_length); -static void cirrusfb_RectFill(u8 __iomem *regbase, int bits_per_pixel, - u_short x, u_short y, - u_short width, u_short height, - u_char color, u_short line_length); - -static void bestclock(long freq, long *best, - long *nom, long *den, - long *div, long maxfreq); - -#ifdef CIRRUSFB_DEBUG -static void cirrusfb_dump(void); -static void cirrusfb_dbg_reg_dump(caddr_t regbase); -static void cirrusfb_dbg_print_regs(caddr_t regbase, - enum cirrusfb_dbg_reg_class reg_class, ...); -static void cirrusfb_dbg_print_byte(const char *name, unsigned char val); -#endif /* CIRRUSFB_DEBUG */ - -/*** END PROTOTYPES ********************************************************/ -/*****************************************************************************/ -/*** BEGIN Interface Used by the World ***************************************/ - -static int opencount; - -/*--- Open /dev/fbx ---------------------------------------------------------*/ -static int cirrusfb_open(struct fb_info *info, int user) -{ - if (opencount++ == 0) - switch_monitor(info->par, 1); - return 0; -} - -/*--- Close /dev/fbx --------------------------------------------------------*/ -static int cirrusfb_release(struct fb_info *info, int user) -{ - if (--opencount == 0) - switch_monitor(info->par, 0); - return 0; -} - -/**** END Interface used by the World *************************************/ -/****************************************************************************/ -/**** BEGIN Hardware specific Routines **************************************/ - -/* Get a good MCLK value */ -static long cirrusfb_get_mclk(long freq, int bpp, long *div) -{ - long mclk; - - assert(div != NULL); - - /* Calculate MCLK, in case VCLK is high enough to require > 50MHz. - * Assume a 64-bit data path for now. The formula is: - * ((B * PCLK * 2)/W) * 1.2 - * B = bytes per pixel, PCLK = pixclock, W = data width in bytes */ - mclk = ((bpp / 8) * freq * 2) / 4; - mclk = (mclk * 12) / 10; - if (mclk < 50000) - mclk = 50000; - DPRINTK("Use MCLK of %ld kHz\n", mclk); - - /* Calculate value for SR1F. Multiply by 2 so we can round up. */ - mclk = ((mclk * 16) / 14318); - mclk = (mclk + 1) / 2; - DPRINTK("Set SR1F[5:0] to 0x%lx\n", mclk); - - /* Determine if we should use MCLK instead of VCLK, and if so, what we - * should divide it by to get VCLK */ - switch (freq) { - case 24751 ... 25249: - *div = 2; - DPRINTK("Using VCLK = MCLK/2\n"); - break; - case 49501 ... 50499: - *div = 1; - DPRINTK("Using VCLK = MCLK\n"); - break; - default: - *div = 0; - break; - } - - return mclk; -} - -static int cirrusfb_check_var(struct fb_var_screeninfo *var, - struct fb_info *info) -{ - int nom, den; /* translyting from pixels->bytes */ - int yres, i; - static struct { int xres, yres; } modes[] = - { { 1600, 1280 }, - { 1280, 1024 }, - { 1024, 768 }, - { 800, 600 }, - { 640, 480 }, - { -1, -1 } }; - - switch (var->bits_per_pixel) { - case 1: - nom = 4; - den = 8; - break; /* 8 pixel per byte, only 1/4th of mem usable */ - case 8: - case 16: - case 24: - case 32: - nom = var->bits_per_pixel / 8; - den = 1; - break; /* 1 pixel == 1 byte */ - default: - printk(KERN_ERR "cirrusfb: mode %dx%dx%d rejected..." - "color depth not supported.\n", - var->xres, var->yres, var->bits_per_pixel); - DPRINTK("EXIT - EINVAL error\n"); - return -EINVAL; - } - - if (var->xres * nom / den * var->yres > info->screen_size) { - printk(KERN_ERR "cirrusfb: mode %dx%dx%d rejected..." - "resolution too high to fit into video memory!\n", - var->xres, var->yres, var->bits_per_pixel); - DPRINTK("EXIT - EINVAL error\n"); - return -EINVAL; - } - - /* use highest possible virtual resolution */ - if (var->xres_virtual == -1 && - var->yres_virtual == -1) { - printk(KERN_INFO - "cirrusfb: using maximum available virtual resolution\n"); - for (i = 0; modes[i].xres != -1; i++) { - int size = modes[i].xres * nom / den * modes[i].yres; - if (size < info->screen_size / 2) - break; - } - if (modes[i].xres == -1) { - printk(KERN_ERR "cirrusfb: could not find a virtual " - "resolution that fits into video memory!!\n"); - DPRINTK("EXIT - EINVAL error\n"); - return -EINVAL; - } - var->xres_virtual = modes[i].xres; - var->yres_virtual = modes[i].yres; - - printk(KERN_INFO "cirrusfb: virtual resolution set to " - "maximum of %dx%d\n", var->xres_virtual, - var->yres_virtual); - } - - if (var->xres_virtual < var->xres) - var->xres_virtual = var->xres; - if (var->yres_virtual < var->yres) - var->yres_virtual = var->yres; - - if (var->xoffset < 0) - var->xoffset = 0; - if (var->yoffset < 0) - var->yoffset = 0; - - /* truncate xoffset and yoffset to maximum if too high */ - if (var->xoffset > var->xres_virtual - var->xres) - var->xoffset = var->xres_virtual - var->xres - 1; - if (var->yoffset > var->yres_virtual - var->yres) - var->yoffset = var->yres_virtual - var->yres - 1; - - switch (var->bits_per_pixel) { - case 1: - var->red.offset = 0; - var->red.length = 1; - var->green = var->red; - var->blue = var->red; - break; - - case 8: - var->red.offset = 0; - var->red.length = 6; - var->green = var->red; - var->blue = var->red; - break; - - case 16: - if (isPReP) { - var->red.offset = 2; - var->green.offset = -3; - var->blue.offset = 8; - } else { - var->red.offset = 10; - var->green.offset = 5; - var->blue.offset = 0; - } - var->red.length = 5; - var->green.length = 5; - var->blue.length = 5; - break; - - case 24: - case 32: - if (isPReP) { - var->red.offset = 8; - var->green.offset = 16; - var->blue.offset = 24; - } else { - var->red.offset = 16; - var->green.offset = 8; - var->blue.offset = 0; - } - var->red.length = 8; - var->green.length = 8; - var->blue.length = 8; - break; - - default: - DPRINTK("Unsupported bpp size: %d\n", var->bits_per_pixel); - assert(false); - /* should never occur */ - break; - } - - var->red.msb_right = - var->green.msb_right = - var->blue.msb_right = - var->transp.offset = - var->transp.length = - var->transp.msb_right = 0; - - yres = var->yres; - if (var->vmode & FB_VMODE_DOUBLE) - yres *= 2; - else if (var->vmode & FB_VMODE_INTERLACED) - yres = (yres + 1) / 2; - - if (yres >= 1280) { - printk(KERN_ERR "cirrusfb: ERROR: VerticalTotal >= 1280; " - "special treatment required! (TODO)\n"); - DPRINTK("EXIT - EINVAL error\n"); - return -EINVAL; - } - - return 0; -} - -static int cirrusfb_decode_var(const struct fb_var_screeninfo *var, - struct cirrusfb_regs *regs, - struct fb_info *info) -{ - long freq; - long maxclock; - int maxclockidx = var->bits_per_pixel >> 3; - struct cirrusfb_info *cinfo = info->par; - int xres, hfront, hsync, hback; - int yres, vfront, vsync, vback; - - switch (var->bits_per_pixel) { - case 1: - info->fix.line_length = var->xres_virtual / 8; - info->fix.visual = FB_VISUAL_MONO10; - break; - - case 8: - info->fix.line_length = var->xres_virtual; - info->fix.visual = FB_VISUAL_PSEUDOCOLOR; - break; - - case 16: - case 24: - case 32: - info->fix.line_length = var->xres_virtual * maxclockidx; - info->fix.visual = FB_VISUAL_DIRECTCOLOR; - break; - - default: - DPRINTK("Unsupported bpp size: %d\n", var->bits_per_pixel); - assert(false); - /* should never occur */ - break; - } - - info->fix.type = FB_TYPE_PACKED_PIXELS; - - /* convert from ps to kHz */ - freq = PICOS2KHZ(var->pixclock); - - DPRINTK("desired pixclock: %ld kHz\n", freq); - - maxclock = cirrusfb_board_info[cinfo->btype].maxclock[maxclockidx]; - regs->multiplexing = 0; - - /* If the frequency is greater than we can support, we might be able - * to use multiplexing for the video mode */ - if (freq > maxclock) { - switch (cinfo->btype) { - case BT_ALPINE: - case BT_GD5480: - regs->multiplexing = 1; - break; - - default: - printk(KERN_ERR "cirrusfb: Frequency greater " - "than maxclock (%ld kHz)\n", maxclock); - DPRINTK("EXIT - return -EINVAL\n"); - return -EINVAL; - } - } -#if 0 - /* TODO: If we have a 1MB 5434, we need to put ourselves in a mode where - * the VCLK is double the pixel clock. */ - switch (var->bits_per_pixel) { - case 16: - case 32: - if (regs->HorizRes <= 800) - /* Xbh has this type of clock for 32-bit */ - freq /= 2; - break; - } -#endif - - bestclock(freq, ®s->freq, ®s->nom, ®s->den, ®s->div, - maxclock); - regs->mclk = cirrusfb_get_mclk(freq, var->bits_per_pixel, - ®s->divMCLK); - - xres = var->xres; - hfront = var->right_margin; - hsync = var->hsync_len; - hback = var->left_margin; - - yres = var->yres; - vfront = var->lower_margin; - vsync = var->vsync_len; - vback = var->upper_margin; - - if (var->vmode & FB_VMODE_DOUBLE) { - yres *= 2; - vfront *= 2; - vsync *= 2; - vback *= 2; - } else if (var->vmode & FB_VMODE_INTERLACED) { - yres = (yres + 1) / 2; - vfront = (vfront + 1) / 2; - vsync = (vsync + 1) / 2; - vback = (vback + 1) / 2; - } - regs->HorizRes = xres; - regs->HorizTotal = (xres + hfront + hsync + hback) / 8 - 5; - regs->HorizDispEnd = xres / 8 - 1; - regs->HorizBlankStart = xres / 8; - /* does not count with "-5" */ - regs->HorizBlankEnd = regs->HorizTotal + 5; - regs->HorizSyncStart = (xres + hfront) / 8 + 1; - regs->HorizSyncEnd = (xres + hfront + hsync) / 8 + 1; - - regs->VertRes = yres; - regs->VertTotal = yres + vfront + vsync + vback - 2; - regs->VertDispEnd = yres - 1; - regs->VertBlankStart = yres; - regs->VertBlankEnd = regs->VertTotal; - regs->VertSyncStart = yres + vfront - 1; - regs->VertSyncEnd = yres + vfront + vsync - 1; - - if (regs->VertRes >= 1024) { - regs->VertTotal /= 2; - regs->VertSyncStart /= 2; - regs->VertSyncEnd /= 2; - regs->VertDispEnd /= 2; - } - if (regs->multiplexing) { - regs->HorizTotal /= 2; - regs->HorizSyncStart /= 2; - regs->HorizSyncEnd /= 2; - regs->HorizDispEnd /= 2; - } - - return 0; -} - -static void cirrusfb_set_mclk(const struct cirrusfb_info *cinfo, int val, - int div) -{ - assert(cinfo != NULL); - - if (div == 2) { - /* VCLK = MCLK/2 */ - unsigned char old = vga_rseq(cinfo->regbase, CL_SEQR1E); - vga_wseq(cinfo->regbase, CL_SEQR1E, old | 0x1); - vga_wseq(cinfo->regbase, CL_SEQR1F, 0x40 | (val & 0x3f)); - } else if (div == 1) { - /* VCLK = MCLK */ - unsigned char old = vga_rseq(cinfo->regbase, CL_SEQR1E); - vga_wseq(cinfo->regbase, CL_SEQR1E, old & ~0x1); - vga_wseq(cinfo->regbase, CL_SEQR1F, 0x40 | (val & 0x3f)); - } else { - vga_wseq(cinfo->regbase, CL_SEQR1F, val & 0x3f); - } -} - -/************************************************************************* - cirrusfb_set_par_foo() - - actually writes the values for a new video mode into the hardware, -**************************************************************************/ -static int cirrusfb_set_par_foo(struct fb_info *info) -{ - struct cirrusfb_info *cinfo = info->par; - struct fb_var_screeninfo *var = &info->var; - struct cirrusfb_regs regs; - u8 __iomem *regbase = cinfo->regbase; - unsigned char tmp; - int offset = 0, err; - const struct cirrusfb_board_info_rec *bi; - - DPRINTK("ENTER\n"); - DPRINTK("Requested mode: %dx%dx%d\n", - var->xres, var->yres, var->bits_per_pixel); - DPRINTK("pixclock: %d\n", var->pixclock); - - init_vgachip(info); - - err = cirrusfb_decode_var(var, ®s, info); - if (err) { - /* should never happen */ - DPRINTK("mode change aborted. invalid var.\n"); - return -EINVAL; - } - - bi = &cirrusfb_board_info[cinfo->btype]; - - /* unlock register VGA_CRTC_H_TOTAL..CRT7 */ - vga_wcrt(regbase, VGA_CRTC_V_SYNC_END, 0x20); /* previously: 0x00) */ - - /* if debugging is enabled, all parameters get output before writing */ - DPRINTK("CRT0: %ld\n", regs.HorizTotal); - vga_wcrt(regbase, VGA_CRTC_H_TOTAL, regs.HorizTotal); - - DPRINTK("CRT1: %ld\n", regs.HorizDispEnd); - vga_wcrt(regbase, VGA_CRTC_H_DISP, regs.HorizDispEnd); - - DPRINTK("CRT2: %ld\n", regs.HorizBlankStart); - vga_wcrt(regbase, VGA_CRTC_H_BLANK_START, regs.HorizBlankStart); - - /* + 128: Compatible read */ - DPRINTK("CRT3: 128+%ld\n", regs.HorizBlankEnd % 32); - vga_wcrt(regbase, VGA_CRTC_H_BLANK_END, - 128 + (regs.HorizBlankEnd % 32)); - - DPRINTK("CRT4: %ld\n", regs.HorizSyncStart); - vga_wcrt(regbase, VGA_CRTC_H_SYNC_START, regs.HorizSyncStart); - - tmp = regs.HorizSyncEnd % 32; - if (regs.HorizBlankEnd & 32) - tmp += 128; - DPRINTK("CRT5: %d\n", tmp); - vga_wcrt(regbase, VGA_CRTC_H_SYNC_END, tmp); - - DPRINTK("CRT6: %ld\n", regs.VertTotal & 0xff); - vga_wcrt(regbase, VGA_CRTC_V_TOTAL, (regs.VertTotal & 0xff)); - - tmp = 16; /* LineCompare bit #9 */ - if (regs.VertTotal & 256) - tmp |= 1; - if (regs.VertDispEnd & 256) - tmp |= 2; - if (regs.VertSyncStart & 256) - tmp |= 4; - if (regs.VertBlankStart & 256) - tmp |= 8; - if (regs.VertTotal & 512) - tmp |= 32; - if (regs.VertDispEnd & 512) - tmp |= 64; - if (regs.VertSyncStart & 512) - tmp |= 128; - DPRINTK("CRT7: %d\n", tmp); - vga_wcrt(regbase, VGA_CRTC_OVERFLOW, tmp); - - tmp = 0x40; /* LineCompare bit #8 */ - if (regs.VertBlankStart & 512) - tmp |= 0x20; - if (var->vmode & FB_VMODE_DOUBLE) - tmp |= 0x80; - DPRINTK("CRT9: %d\n", tmp); - vga_wcrt(regbase, VGA_CRTC_MAX_SCAN, tmp); - - DPRINTK("CRT10: %ld\n", regs.VertSyncStart & 0xff); - vga_wcrt(regbase, VGA_CRTC_V_SYNC_START, regs.VertSyncStart & 0xff); - - DPRINTK("CRT11: 64+32+%ld\n", regs.VertSyncEnd % 16); - vga_wcrt(regbase, VGA_CRTC_V_SYNC_END, regs.VertSyncEnd % 16 + 64 + 32); - - DPRINTK("CRT12: %ld\n", regs.VertDispEnd & 0xff); - vga_wcrt(regbase, VGA_CRTC_V_DISP_END, regs.VertDispEnd & 0xff); - - DPRINTK("CRT15: %ld\n", regs.VertBlankStart & 0xff); - vga_wcrt(regbase, VGA_CRTC_V_BLANK_START, regs.VertBlankStart & 0xff); - - DPRINTK("CRT16: %ld\n", regs.VertBlankEnd & 0xff); - vga_wcrt(regbase, VGA_CRTC_V_BLANK_END, regs.VertBlankEnd & 0xff); - - DPRINTK("CRT18: 0xff\n"); - vga_wcrt(regbase, VGA_CRTC_LINE_COMPARE, 0xff); - - tmp = 0; - if (var->vmode & FB_VMODE_INTERLACED) - tmp |= 1; - if (regs.HorizBlankEnd & 64) - tmp |= 16; - if (regs.HorizBlankEnd & 128) - tmp |= 32; - if (regs.VertBlankEnd & 256) - tmp |= 64; - if (regs.VertBlankEnd & 512) - tmp |= 128; - - DPRINTK("CRT1a: %d\n", tmp); - vga_wcrt(regbase, CL_CRT1A, tmp); - - /* set VCLK0 */ - /* hardware RefClock: 14.31818 MHz */ - /* formula: VClk = (OSC * N) / (D * (1+P)) */ - /* Example: VClk = (14.31818 * 91) / (23 * (1+1)) = 28.325 MHz */ - - vga_wseq(regbase, CL_SEQRB, regs.nom); - tmp = regs.den << 1; - if (regs.div != 0) - tmp |= 1; - - /* 6 bit denom; ONLY 5434!!! (bugged me 10 days) */ - if ((cinfo->btype == BT_SD64) || - (cinfo->btype == BT_ALPINE) || - (cinfo->btype == BT_GD5480)) - tmp |= 0x80; - - DPRINTK("CL_SEQR1B: %ld\n", (long) tmp); - vga_wseq(regbase, CL_SEQR1B, tmp); - - if (regs.VertRes >= 1024) - /* 1280x1024 */ - vga_wcrt(regbase, VGA_CRTC_MODE, 0xc7); - else - /* mode control: VGA_CRTC_START_HI enable, ROTATE(?), 16bit - * address wrap, no compat. */ - vga_wcrt(regbase, VGA_CRTC_MODE, 0xc3); - -/* HAEH? vga_wcrt(regbase, VGA_CRTC_V_SYNC_END, 0x20); - * previously: 0x00 unlock VGA_CRTC_H_TOTAL..CRT7 */ - - /* don't know if it would hurt to also program this if no interlaced */ - /* mode is used, but I feel better this way.. :-) */ - if (var->vmode & FB_VMODE_INTERLACED) - vga_wcrt(regbase, VGA_CRTC_REGS, regs.HorizTotal / 2); - else - vga_wcrt(regbase, VGA_CRTC_REGS, 0x00); /* interlace control */ - - vga_wseq(regbase, VGA_SEQ_CHARACTER_MAP, 0); - - /* adjust horizontal/vertical sync type (low/high) */ - /* enable display memory & CRTC I/O address for color mode */ - tmp = 0x03; - if (var->sync & FB_SYNC_HOR_HIGH_ACT) - tmp |= 0x40; - if (var->sync & FB_SYNC_VERT_HIGH_ACT) - tmp |= 0x80; - WGen(cinfo, VGA_MIS_W, tmp); - - /* Screen A Preset Row-Scan register */ - vga_wcrt(regbase, VGA_CRTC_PRESET_ROW, 0); - /* text cursor on and start line */ - vga_wcrt(regbase, VGA_CRTC_CURSOR_START, 0); - /* text cursor end line */ - vga_wcrt(regbase, VGA_CRTC_CURSOR_END, 31); - - /****************************************************** - * - * 1 bpp - * - */ - - /* programming for different color depths */ - if (var->bits_per_pixel == 1) { - DPRINTK("cirrusfb: preparing for 1 bit deep display\n"); - vga_wgfx(regbase, VGA_GFX_MODE, 0); /* mode register */ - - /* SR07 */ - switch (cinfo->btype) { - case BT_SD64: - case BT_PICCOLO: - case BT_PICASSO: - case BT_SPECTRUM: - case BT_PICASSO4: - case BT_ALPINE: - case BT_GD5480: - DPRINTK(" (for GD54xx)\n"); - vga_wseq(regbase, CL_SEQR7, - regs.multiplexing ? - bi->sr07_1bpp_mux : bi->sr07_1bpp); - break; - - case BT_LAGUNA: - DPRINTK(" (for GD546x)\n"); - vga_wseq(regbase, CL_SEQR7, - vga_rseq(regbase, CL_SEQR7) & ~0x01); - break; - - default: - printk(KERN_WARNING "cirrusfb: unknown Board\n"); - break; - } - - /* Extended Sequencer Mode */ - switch (cinfo->btype) { - case BT_SD64: - /* setting the SEQRF on SD64 is not necessary - * (only during init) - */ - DPRINTK("(for SD64)\n"); - /* MCLK select */ - vga_wseq(regbase, CL_SEQR1F, 0x1a); - break; - - case BT_PICCOLO: - case BT_SPECTRUM: - DPRINTK("(for Piccolo/Spectrum)\n"); - /* ### ueberall 0x22? */ - /* ##vorher 1c MCLK select */ - vga_wseq(regbase, CL_SEQR1F, 0x22); - /* evtl d0 bei 1 bit? avoid FIFO underruns..? */ - vga_wseq(regbase, CL_SEQRF, 0xb0); - break; - - case BT_PICASSO: - DPRINTK("(for Picasso)\n"); - /* ##vorher 22 MCLK select */ - vga_wseq(regbase, CL_SEQR1F, 0x22); - /* ## vorher d0 avoid FIFO underruns..? */ - vga_wseq(regbase, CL_SEQRF, 0xd0); - break; - - case BT_PICASSO4: - case BT_ALPINE: - case BT_GD5480: - case BT_LAGUNA: - DPRINTK(" (for GD54xx)\n"); - /* do nothing */ - break; - - default: - printk(KERN_WARNING "cirrusfb: unknown Board\n"); - break; - } - - /* pixel mask: pass-through for first plane */ - WGen(cinfo, VGA_PEL_MSK, 0x01); - if (regs.multiplexing) - /* hidden dac reg: 1280x1024 */ - WHDR(cinfo, 0x4a); - else - /* hidden dac: nothing */ - WHDR(cinfo, 0); - /* memory mode: odd/even, ext. memory */ - vga_wseq(regbase, VGA_SEQ_MEMORY_MODE, 0x06); - /* plane mask: only write to first plane */ - vga_wseq(regbase, VGA_SEQ_PLANE_WRITE, 0x01); - offset = var->xres_virtual / 16; - } - - /****************************************************** - * - * 8 bpp - * - */ - - else if (var->bits_per_pixel == 8) { - DPRINTK("cirrusfb: preparing for 8 bit deep display\n"); - switch (cinfo->btype) { - case BT_SD64: - case BT_PICCOLO: - case BT_PICASSO: - case BT_SPECTRUM: - case BT_PICASSO4: - case BT_ALPINE: - case BT_GD5480: - DPRINTK(" (for GD54xx)\n"); - vga_wseq(regbase, CL_SEQR7, - regs.multiplexing ? - bi->sr07_8bpp_mux : bi->sr07_8bpp); - break; - - case BT_LAGUNA: - DPRINTK(" (for GD546x)\n"); - vga_wseq(regbase, CL_SEQR7, - vga_rseq(regbase, CL_SEQR7) | 0x01); - break; - - default: - printk(KERN_WARNING "cirrusfb: unknown Board\n"); - break; - } - - switch (cinfo->btype) { - case BT_SD64: - /* MCLK select */ - vga_wseq(regbase, CL_SEQR1F, 0x1d); - break; - - case BT_PICCOLO: - case BT_PICASSO: - case BT_SPECTRUM: - /* ### vorher 1c MCLK select */ - vga_wseq(regbase, CL_SEQR1F, 0x22); - /* Fast Page-Mode writes */ - vga_wseq(regbase, CL_SEQRF, 0xb0); - break; - - case BT_PICASSO4: -#ifdef CONFIG_ZORRO - /* ### INCOMPLETE!! */ - vga_wseq(regbase, CL_SEQRF, 0xb8); -#endif -/* vga_wseq(regbase, CL_SEQR1F, 0x1c); */ - break; - - case BT_ALPINE: - DPRINTK(" (for GD543x)\n"); - cirrusfb_set_mclk(cinfo, regs.mclk, regs.divMCLK); - /* We already set SRF and SR1F */ - break; - - case BT_GD5480: - case BT_LAGUNA: - DPRINTK(" (for GD54xx)\n"); - /* do nothing */ - break; - - default: - printk(KERN_WARNING "cirrusfb: unknown Board\n"); - break; - } - - /* mode register: 256 color mode */ - vga_wgfx(regbase, VGA_GFX_MODE, 64); - /* pixel mask: pass-through all planes */ - WGen(cinfo, VGA_PEL_MSK, 0xff); - if (regs.multiplexing) - /* hidden dac reg: 1280x1024 */ - WHDR(cinfo, 0x4a); - else - /* hidden dac: nothing */ - WHDR(cinfo, 0); - /* memory mode: chain4, ext. memory */ - vga_wseq(regbase, VGA_SEQ_MEMORY_MODE, 0x0a); - /* plane mask: enable writing to all 4 planes */ - vga_wseq(regbase, VGA_SEQ_PLANE_WRITE, 0xff); - offset = var->xres_virtual / 8; - } - - /****************************************************** - * - * 16 bpp - * - */ - - else if (var->bits_per_pixel == 16) { - DPRINTK("cirrusfb: preparing for 16 bit deep display\n"); - switch (cinfo->btype) { - case BT_SD64: - /* Extended Sequencer Mode: 256c col. mode */ - vga_wseq(regbase, CL_SEQR7, 0xf7); - /* MCLK select */ - vga_wseq(regbase, CL_SEQR1F, 0x1e); - break; - - case BT_PICCOLO: - case BT_SPECTRUM: - vga_wseq(regbase, CL_SEQR7, 0x87); - /* Fast Page-Mode writes */ - vga_wseq(regbase, CL_SEQRF, 0xb0); - /* MCLK select */ - vga_wseq(regbase, CL_SEQR1F, 0x22); - break; - - case BT_PICASSO: - vga_wseq(regbase, CL_SEQR7, 0x27); - /* Fast Page-Mode writes */ - vga_wseq(regbase, CL_SEQRF, 0xb0); - /* MCLK select */ - vga_wseq(regbase, CL_SEQR1F, 0x22); - break; - - case BT_PICASSO4: - vga_wseq(regbase, CL_SEQR7, 0x27); -/* vga_wseq(regbase, CL_SEQR1F, 0x1c); */ - break; - - case BT_ALPINE: - DPRINTK(" (for GD543x)\n"); - if (regs.HorizRes >= 1024) - vga_wseq(regbase, CL_SEQR7, 0xa7); - else - vga_wseq(regbase, CL_SEQR7, 0xa3); - cirrusfb_set_mclk(cinfo, regs.mclk, regs.divMCLK); - break; - - case BT_GD5480: - DPRINTK(" (for GD5480)\n"); - vga_wseq(regbase, CL_SEQR7, 0x17); - /* We already set SRF and SR1F */ - break; - - case BT_LAGUNA: - DPRINTK(" (for GD546x)\n"); - vga_wseq(regbase, CL_SEQR7, - vga_rseq(regbase, CL_SEQR7) & ~0x01); - break; - - default: - printk(KERN_WARNING "CIRRUSFB: unknown Board\n"); - break; - } - - /* mode register: 256 color mode */ - vga_wgfx(regbase, VGA_GFX_MODE, 64); - /* pixel mask: pass-through all planes */ - WGen(cinfo, VGA_PEL_MSK, 0xff); -#ifdef CONFIG_PCI - WHDR(cinfo, 0xc0); /* Copy Xbh */ -#elif defined(CONFIG_ZORRO) - /* FIXME: CONFIG_PCI and CONFIG_ZORRO may be defined both */ - WHDR(cinfo, 0xa0); /* hidden dac reg: nothing special */ -#endif - /* memory mode: chain4, ext. memory */ - vga_wseq(regbase, VGA_SEQ_MEMORY_MODE, 0x0a); - /* plane mask: enable writing to all 4 planes */ - vga_wseq(regbase, VGA_SEQ_PLANE_WRITE, 0xff); - offset = var->xres_virtual / 4; - } - - /****************************************************** - * - * 32 bpp - * - */ - - else if (var->bits_per_pixel == 32) { - DPRINTK("cirrusfb: preparing for 24/32 bit deep display\n"); - switch (cinfo->btype) { - case BT_SD64: - /* Extended Sequencer Mode: 256c col. mode */ - vga_wseq(regbase, CL_SEQR7, 0xf9); - /* MCLK select */ - vga_wseq(regbase, CL_SEQR1F, 0x1e); - break; - - case BT_PICCOLO: - case BT_SPECTRUM: - vga_wseq(regbase, CL_SEQR7, 0x85); - /* Fast Page-Mode writes */ - vga_wseq(regbase, CL_SEQRF, 0xb0); - /* MCLK select */ - vga_wseq(regbase, CL_SEQR1F, 0x22); - break; - - case BT_PICASSO: - vga_wseq(regbase, CL_SEQR7, 0x25); - /* Fast Page-Mode writes */ - vga_wseq(regbase, CL_SEQRF, 0xb0); - /* MCLK select */ - vga_wseq(regbase, CL_SEQR1F, 0x22); - break; - - case BT_PICASSO4: - vga_wseq(regbase, CL_SEQR7, 0x25); -/* vga_wseq(regbase, CL_SEQR1F, 0x1c); */ - break; - - case BT_ALPINE: - DPRINTK(" (for GD543x)\n"); - vga_wseq(regbase, CL_SEQR7, 0xa9); - cirrusfb_set_mclk(cinfo, regs.mclk, regs.divMCLK); - break; - - case BT_GD5480: - DPRINTK(" (for GD5480)\n"); - vga_wseq(regbase, CL_SEQR7, 0x19); - /* We already set SRF and SR1F */ - break; - - case BT_LAGUNA: - DPRINTK(" (for GD546x)\n"); - vga_wseq(regbase, CL_SEQR7, - vga_rseq(regbase, CL_SEQR7) & ~0x01); - break; - - default: - printk(KERN_WARNING "cirrusfb: unknown Board\n"); - break; - } - - /* mode register: 256 color mode */ - vga_wgfx(regbase, VGA_GFX_MODE, 64); - /* pixel mask: pass-through all planes */ - WGen(cinfo, VGA_PEL_MSK, 0xff); - /* hidden dac reg: 8-8-8 mode (24 or 32) */ - WHDR(cinfo, 0xc5); - /* memory mode: chain4, ext. memory */ - vga_wseq(regbase, VGA_SEQ_MEMORY_MODE, 0x0a); - /* plane mask: enable writing to all 4 planes */ - vga_wseq(regbase, VGA_SEQ_PLANE_WRITE, 0xff); - offset = var->xres_virtual / 4; - } - - /****************************************************** - * - * unknown/unsupported bpp - * - */ - - else - printk(KERN_ERR "cirrusfb: What's this?? " - " requested color depth == %d.\n", - var->bits_per_pixel); - - vga_wcrt(regbase, VGA_CRTC_OFFSET, offset & 0xff); - tmp = 0x22; - if (offset & 0x100) - tmp |= 0x10; /* offset overflow bit */ - - /* screen start addr #16-18, fastpagemode cycles */ - vga_wcrt(regbase, CL_CRT1B, tmp); - - if (cinfo->btype == BT_SD64 || - cinfo->btype == BT_PICASSO4 || - cinfo->btype == BT_ALPINE || - cinfo->btype == BT_GD5480) - /* screen start address bit 19 */ - vga_wcrt(regbase, CL_CRT1D, 0x00); - - /* text cursor location high */ - vga_wcrt(regbase, VGA_CRTC_CURSOR_HI, 0); - /* text cursor location low */ - vga_wcrt(regbase, VGA_CRTC_CURSOR_LO, 0); - /* underline row scanline = at very bottom */ - vga_wcrt(regbase, VGA_CRTC_UNDERLINE, 0); - - /* controller mode */ - vga_wattr(regbase, VGA_ATC_MODE, 1); - /* overscan (border) color */ - vga_wattr(regbase, VGA_ATC_OVERSCAN, 0); - /* color plane enable */ - vga_wattr(regbase, VGA_ATC_PLANE_ENABLE, 15); - /* pixel panning */ - vga_wattr(regbase, CL_AR33, 0); - /* color select */ - vga_wattr(regbase, VGA_ATC_COLOR_PAGE, 0); - - /* [ EGS: SetOffset(); ] */ - /* From SetOffset(): Turn on VideoEnable bit in Attribute controller */ - AttrOn(cinfo); - - /* set/reset register */ - vga_wgfx(regbase, VGA_GFX_SR_VALUE, 0); - /* set/reset enable */ - vga_wgfx(regbase, VGA_GFX_SR_ENABLE, 0); - /* color compare */ - vga_wgfx(regbase, VGA_GFX_COMPARE_VALUE, 0); - /* data rotate */ - vga_wgfx(regbase, VGA_GFX_DATA_ROTATE, 0); - /* read map select */ - vga_wgfx(regbase, VGA_GFX_PLANE_READ, 0); - /* miscellaneous register */ - vga_wgfx(regbase, VGA_GFX_MISC, 1); - /* color don't care */ - vga_wgfx(regbase, VGA_GFX_COMPARE_MASK, 15); - /* bit mask */ - vga_wgfx(regbase, VGA_GFX_BIT_MASK, 255); - - /* graphics cursor attributes: nothing special */ - vga_wseq(regbase, CL_SEQR12, 0x0); - - /* finally, turn on everything - turn off "FullBandwidth" bit */ - /* also, set "DotClock%2" bit where requested */ - tmp = 0x01; - -/*** FB_VMODE_CLOCK_HALVE in linux/fb.h not defined anymore ? - if (var->vmode & FB_VMODE_CLOCK_HALVE) - tmp |= 0x08; -*/ - - vga_wseq(regbase, VGA_SEQ_CLOCK_MODE, tmp); - DPRINTK("CL_SEQR1: %d\n", tmp); - - cinfo->currentmode = regs; - - /* pan to requested offset */ - cirrusfb_pan_display(var, info); - -#ifdef CIRRUSFB_DEBUG - cirrusfb_dump(); -#endif - - DPRINTK("EXIT\n"); - return 0; -} - -/* for some reason incomprehensible to me, cirrusfb requires that you write - * the registers twice for the settings to take..grr. -dte */ -static int cirrusfb_set_par(struct fb_info *info) -{ - cirrusfb_set_par_foo(info); - return cirrusfb_set_par_foo(info); -} - -static int cirrusfb_setcolreg(unsigned regno, unsigned red, unsigned green, - unsigned blue, unsigned transp, - struct fb_info *info) -{ - struct cirrusfb_info *cinfo = info->par; - - if (regno > 255) - return -EINVAL; - - if (info->fix.visual == FB_VISUAL_TRUECOLOR) { - u32 v; - red >>= (16 - info->var.red.length); - green >>= (16 - info->var.green.length); - blue >>= (16 - info->var.blue.length); - - if (regno >= 16) - return 1; - v = (red << info->var.red.offset) | - (green << info->var.green.offset) | - (blue << info->var.blue.offset); - - cinfo->pseudo_palette[regno] = v; - return 0; - } - - if (info->var.bits_per_pixel == 8) - WClut(cinfo, regno, red >> 10, green >> 10, blue >> 10); - - return 0; - -} - -/************************************************************************* - cirrusfb_pan_display() - - performs display panning - provided hardware permits this -**************************************************************************/ -static int cirrusfb_pan_display(struct fb_var_screeninfo *var, - struct fb_info *info) -{ - int xoffset = 0; - int yoffset = 0; - unsigned long base; - unsigned char tmp = 0, tmp2 = 0, xpix; - struct cirrusfb_info *cinfo = info->par; - - DPRINTK("ENTER\n"); - DPRINTK("virtual offset: (%d,%d)\n", var->xoffset, var->yoffset); - - /* no range checks for xoffset and yoffset, */ - /* as fb_pan_display has already done this */ - if (var->vmode & FB_VMODE_YWRAP) - return -EINVAL; - - info->var.xoffset = var->xoffset; - info->var.yoffset = var->yoffset; - - xoffset = var->xoffset * info->var.bits_per_pixel / 8; - yoffset = var->yoffset; - - base = yoffset * info->fix.line_length + xoffset; - - if (info->var.bits_per_pixel == 1) { - /* base is already correct */ - xpix = (unsigned char) (var->xoffset % 8); - } else { - base /= 4; - xpix = (unsigned char) ((xoffset % 4) * 2); - } - - cirrusfb_WaitBLT(cinfo->regbase); /* make sure all the BLT's are done */ - - /* lower 8 + 8 bits of screen start address */ - vga_wcrt(cinfo->regbase, VGA_CRTC_START_LO, - (unsigned char) (base & 0xff)); - vga_wcrt(cinfo->regbase, VGA_CRTC_START_HI, - (unsigned char) (base >> 8)); - - /* construct bits 16, 17 and 18 of screen start address */ - if (base & 0x10000) - tmp |= 0x01; - if (base & 0x20000) - tmp |= 0x04; - if (base & 0x40000) - tmp |= 0x08; - - /* 0xf2 is %11110010, exclude tmp bits */ - tmp2 = (vga_rcrt(cinfo->regbase, CL_CRT1B) & 0xf2) | tmp; - vga_wcrt(cinfo->regbase, CL_CRT1B, tmp2); - - /* construct bit 19 of screen start address */ - if (cirrusfb_board_info[cinfo->btype].scrn_start_bit19) - vga_wcrt(cinfo->regbase, CL_CRT1D, (base >> 12) & 0x80); - - /* write pixel panning value to AR33; this does not quite work in 8bpp - * - * ### Piccolo..? Will this work? - */ - if (info->var.bits_per_pixel == 1) - vga_wattr(cinfo->regbase, CL_AR33, xpix); - - cirrusfb_WaitBLT(cinfo->regbase); - - DPRINTK("EXIT\n"); - return 0; -} - -static int cirrusfb_blank(int blank_mode, struct fb_info *info) -{ - /* - * Blank the screen if blank_mode != 0, else unblank. If blank == NULL - * then the caller blanks by setting the CLUT (Color Look Up Table) - * to all black. Return 0 if blanking succeeded, != 0 if un-/blanking - * failed due to e.g. a video mode which doesn't support it. - * Implements VESA suspend and powerdown modes on hardware that - * supports disabling hsync/vsync: - * blank_mode == 2: suspend vsync - * blank_mode == 3: suspend hsync - * blank_mode == 4: powerdown - */ - unsigned char val; - struct cirrusfb_info *cinfo = info->par; - int current_mode = cinfo->blank_mode; - - DPRINTK("ENTER, blank mode = %d\n", blank_mode); - - if (info->state != FBINFO_STATE_RUNNING || - current_mode == blank_mode) { - DPRINTK("EXIT, returning 0\n"); - return 0; - } - - /* Undo current */ - if (current_mode == FB_BLANK_NORMAL || - current_mode == FB_BLANK_UNBLANK) { - /* unblank the screen */ - val = vga_rseq(cinfo->regbase, VGA_SEQ_CLOCK_MODE); - /* clear "FullBandwidth" bit */ - vga_wseq(cinfo->regbase, VGA_SEQ_CLOCK_MODE, val & 0xdf); - /* and undo VESA suspend trickery */ - vga_wgfx(cinfo->regbase, CL_GRE, 0x00); - } - - /* set new */ - if (blank_mode > FB_BLANK_NORMAL) { - /* blank the screen */ - val = vga_rseq(cinfo->regbase, VGA_SEQ_CLOCK_MODE); - /* set "FullBandwidth" bit */ - vga_wseq(cinfo->regbase, VGA_SEQ_CLOCK_MODE, val | 0x20); - } - - switch (blank_mode) { - case FB_BLANK_UNBLANK: - case FB_BLANK_NORMAL: - break; - case FB_BLANK_VSYNC_SUSPEND: - vga_wgfx(cinfo->regbase, CL_GRE, 0x04); - break; - case FB_BLANK_HSYNC_SUSPEND: - vga_wgfx(cinfo->regbase, CL_GRE, 0x02); - break; - case FB_BLANK_POWERDOWN: - vga_wgfx(cinfo->regbase, CL_GRE, 0x06); - break; - default: - DPRINTK("EXIT, returning 1\n"); - return 1; - } - - cinfo->blank_mode = blank_mode; - DPRINTK("EXIT, returning 0\n"); - - /* Let fbcon do a soft blank for us */ - return (blank_mode == FB_BLANK_NORMAL) ? 1 : 0; -} -/**** END Hardware specific Routines **************************************/ -/****************************************************************************/ -/**** BEGIN Internal Routines ***********************************************/ - -static void init_vgachip(struct fb_info *info) -{ - struct cirrusfb_info *cinfo = info->par; - const struct cirrusfb_board_info_rec *bi; - - DPRINTK("ENTER\n"); - - assert(cinfo != NULL); - - bi = &cirrusfb_board_info[cinfo->btype]; - - /* reset board globally */ - switch (cinfo->btype) { - case BT_PICCOLO: - WSFR(cinfo, 0x01); - udelay(500); - WSFR(cinfo, 0x51); - udelay(500); - break; - case BT_PICASSO: - WSFR2(cinfo, 0xff); - udelay(500); - break; - case BT_SD64: - case BT_SPECTRUM: - WSFR(cinfo, 0x1f); - udelay(500); - WSFR(cinfo, 0x4f); - udelay(500); - break; - case BT_PICASSO4: - /* disable flickerfixer */ - vga_wcrt(cinfo->regbase, CL_CRT51, 0x00); - mdelay(100); - /* from Klaus' NetBSD driver: */ - vga_wgfx(cinfo->regbase, CL_GR2F, 0x00); - /* put blitter into 542x compat */ - vga_wgfx(cinfo->regbase, CL_GR33, 0x00); - /* mode */ - vga_wgfx(cinfo->regbase, CL_GR31, 0x00); - break; - - case BT_GD5480: - /* from Klaus' NetBSD driver: */ - vga_wgfx(cinfo->regbase, CL_GR2F, 0x00); - break; - - case BT_ALPINE: - /* Nothing to do to reset the board. */ - break; - - default: - printk(KERN_ERR "cirrusfb: Warning: Unknown board type\n"); - break; - } - - /* make sure RAM size set by this point */ - assert(info->screen_size > 0); - - /* the P4 is not fully initialized here; I rely on it having been */ - /* inited under AmigaOS already, which seems to work just fine */ - /* (Klaus advised to do it this way) */ - - if (cinfo->btype != BT_PICASSO4) { - WGen(cinfo, CL_VSSM, 0x10); /* EGS: 0x16 */ - WGen(cinfo, CL_POS102, 0x01); - WGen(cinfo, CL_VSSM, 0x08); /* EGS: 0x0e */ - - if (cinfo->btype != BT_SD64) - WGen(cinfo, CL_VSSM2, 0x01); - - /* reset sequencer logic */ - vga_wseq(cinfo->regbase, CL_SEQR0, 0x03); - - /* FullBandwidth (video off) and 8/9 dot clock */ - vga_wseq(cinfo->regbase, VGA_SEQ_CLOCK_MODE, 0x21); - /* polarity (-/-), disable access to display memory, - * VGA_CRTC_START_HI base address: color - */ - WGen(cinfo, VGA_MIS_W, 0xc1); - - /* "magic cookie" - doesn't make any sense to me.. */ -/* vga_wgfx(cinfo->regbase, CL_GRA, 0xce); */ - /* unlock all extension registers */ - vga_wseq(cinfo->regbase, CL_SEQR6, 0x12); - - /* reset blitter */ - vga_wgfx(cinfo->regbase, CL_GR31, 0x04); - - switch (cinfo->btype) { - case BT_GD5480: - vga_wseq(cinfo->regbase, CL_SEQRF, 0x98); - break; - case BT_ALPINE: - break; - case BT_SD64: - vga_wseq(cinfo->regbase, CL_SEQRF, 0xb8); - break; - default: - vga_wseq(cinfo->regbase, CL_SEQR16, 0x0f); - vga_wseq(cinfo->regbase, CL_SEQRF, 0xb0); - break; - } - } - /* plane mask: nothing */ - vga_wseq(cinfo->regbase, VGA_SEQ_PLANE_WRITE, 0xff); - /* character map select: doesn't even matter in gx mode */ - vga_wseq(cinfo->regbase, VGA_SEQ_CHARACTER_MAP, 0x00); - /* memory mode: chain-4, no odd/even, ext. memory */ - vga_wseq(cinfo->regbase, VGA_SEQ_MEMORY_MODE, 0x0e); - - /* controller-internal base address of video memory */ - if (bi->init_sr07) - vga_wseq(cinfo->regbase, CL_SEQR7, bi->sr07); - - /* vga_wseq(cinfo->regbase, CL_SEQR8, 0x00); */ - /* EEPROM control: shouldn't be necessary to write to this at all.. */ - - /* graphics cursor X position (incomplete; position gives rem. 3 bits */ - vga_wseq(cinfo->regbase, CL_SEQR10, 0x00); - /* graphics cursor Y position (..."... ) */ - vga_wseq(cinfo->regbase, CL_SEQR11, 0x00); - /* graphics cursor attributes */ - vga_wseq(cinfo->regbase, CL_SEQR12, 0x00); - /* graphics cursor pattern address */ - vga_wseq(cinfo->regbase, CL_SEQR13, 0x00); - - /* writing these on a P4 might give problems.. */ - if (cinfo->btype != BT_PICASSO4) { - /* configuration readback and ext. color */ - vga_wseq(cinfo->regbase, CL_SEQR17, 0x00); - /* signature generator */ - vga_wseq(cinfo->regbase, CL_SEQR18, 0x02); - } - - /* MCLK select etc. */ - if (bi->init_sr1f) - vga_wseq(cinfo->regbase, CL_SEQR1F, bi->sr1f); - - /* Screen A preset row scan: none */ - vga_wcrt(cinfo->regbase, VGA_CRTC_PRESET_ROW, 0x00); - /* Text cursor start: disable text cursor */ - vga_wcrt(cinfo->regbase, VGA_CRTC_CURSOR_START, 0x20); - /* Text cursor end: - */ - vga_wcrt(cinfo->regbase, VGA_CRTC_CURSOR_END, 0x00); - /* Screen start address high: 0 */ - vga_wcrt(cinfo->regbase, VGA_CRTC_START_HI, 0x00); - /* Screen start address low: 0 */ - vga_wcrt(cinfo->regbase, VGA_CRTC_START_LO, 0x00); - /* text cursor location high: 0 */ - vga_wcrt(cinfo->regbase, VGA_CRTC_CURSOR_HI, 0x00); - /* text cursor location low: 0 */ - vga_wcrt(cinfo->regbase, VGA_CRTC_CURSOR_LO, 0x00); - - /* Underline Row scanline: - */ - vga_wcrt(cinfo->regbase, VGA_CRTC_UNDERLINE, 0x00); - /* mode control: timing enable, byte mode, no compat modes */ - vga_wcrt(cinfo->regbase, VGA_CRTC_MODE, 0xc3); - /* Line Compare: not needed */ - vga_wcrt(cinfo->regbase, VGA_CRTC_LINE_COMPARE, 0x00); - /* ### add 0x40 for text modes with > 30 MHz pixclock */ - /* ext. display controls: ext.adr. wrap */ - vga_wcrt(cinfo->regbase, CL_CRT1B, 0x02); - - /* Set/Reset registes: - */ - vga_wgfx(cinfo->regbase, VGA_GFX_SR_VALUE, 0x00); - /* Set/Reset enable: - */ - vga_wgfx(cinfo->regbase, VGA_GFX_SR_ENABLE, 0x00); - /* Color Compare: - */ - vga_wgfx(cinfo->regbase, VGA_GFX_COMPARE_VALUE, 0x00); - /* Data Rotate: - */ - vga_wgfx(cinfo->regbase, VGA_GFX_DATA_ROTATE, 0x00); - /* Read Map Select: - */ - vga_wgfx(cinfo->regbase, VGA_GFX_PLANE_READ, 0x00); - /* Mode: conf. for 16/4/2 color mode, no odd/even, read/write mode 0 */ - vga_wgfx(cinfo->regbase, VGA_GFX_MODE, 0x00); - /* Miscellaneous: memory map base address, graphics mode */ - vga_wgfx(cinfo->regbase, VGA_GFX_MISC, 0x01); - /* Color Don't care: involve all planes */ - vga_wgfx(cinfo->regbase, VGA_GFX_COMPARE_MASK, 0x0f); - /* Bit Mask: no mask at all */ - vga_wgfx(cinfo->regbase, VGA_GFX_BIT_MASK, 0xff); - if (cinfo->btype == BT_ALPINE) - /* (5434 can't have bit 3 set for bitblt) */ - vga_wgfx(cinfo->regbase, CL_GRB, 0x20); - else - /* Graphics controller mode extensions: finer granularity, - * 8byte data latches - */ - vga_wgfx(cinfo->regbase, CL_GRB, 0x28); - - vga_wgfx(cinfo->regbase, CL_GRC, 0xff); /* Color Key compare: - */ - vga_wgfx(cinfo->regbase, CL_GRD, 0x00); /* Color Key compare mask: - */ - vga_wgfx(cinfo->regbase, CL_GRE, 0x00); /* Miscellaneous control: - */ - /* Background color byte 1: - */ - /* vga_wgfx (cinfo->regbase, CL_GR10, 0x00); */ - /* vga_wgfx (cinfo->regbase, CL_GR11, 0x00); */ - - /* Attribute Controller palette registers: "identity mapping" */ - vga_wattr(cinfo->regbase, VGA_ATC_PALETTE0, 0x00); - vga_wattr(cinfo->regbase, VGA_ATC_PALETTE1, 0x01); - vga_wattr(cinfo->regbase, VGA_ATC_PALETTE2, 0x02); - vga_wattr(cinfo->regbase, VGA_ATC_PALETTE3, 0x03); - vga_wattr(cinfo->regbase, VGA_ATC_PALETTE4, 0x04); - vga_wattr(cinfo->regbase, VGA_ATC_PALETTE5, 0x05); - vga_wattr(cinfo->regbase, VGA_ATC_PALETTE6, 0x06); - vga_wattr(cinfo->regbase, VGA_ATC_PALETTE7, 0x07); - vga_wattr(cinfo->regbase, VGA_ATC_PALETTE8, 0x08); - vga_wattr(cinfo->regbase, VGA_ATC_PALETTE9, 0x09); - vga_wattr(cinfo->regbase, VGA_ATC_PALETTEA, 0x0a); - vga_wattr(cinfo->regbase, VGA_ATC_PALETTEB, 0x0b); - vga_wattr(cinfo->regbase, VGA_ATC_PALETTEC, 0x0c); - vga_wattr(cinfo->regbase, VGA_ATC_PALETTED, 0x0d); - vga_wattr(cinfo->regbase, VGA_ATC_PALETTEE, 0x0e); - vga_wattr(cinfo->regbase, VGA_ATC_PALETTEF, 0x0f); - - /* Attribute Controller mode: graphics mode */ - vga_wattr(cinfo->regbase, VGA_ATC_MODE, 0x01); - /* Overscan color reg.: reg. 0 */ - vga_wattr(cinfo->regbase, VGA_ATC_OVERSCAN, 0x00); - /* Color Plane enable: Enable all 4 planes */ - vga_wattr(cinfo->regbase, VGA_ATC_PLANE_ENABLE, 0x0f); -/* ### vga_wattr(cinfo->regbase, CL_AR33, 0x00); * Pixel Panning: - */ - /* Color Select: - */ - vga_wattr(cinfo->regbase, VGA_ATC_COLOR_PAGE, 0x00); - - WGen(cinfo, VGA_PEL_MSK, 0xff); /* Pixel mask: no mask */ - - if (cinfo->btype != BT_ALPINE && cinfo->btype != BT_GD5480) - /* polarity (-/-), enable display mem, - * VGA_CRTC_START_HI i/o base = color - */ - WGen(cinfo, VGA_MIS_W, 0xc3); - - /* BLT Start/status: Blitter reset */ - vga_wgfx(cinfo->regbase, CL_GR31, 0x04); - /* - " - : "end-of-reset" */ - vga_wgfx(cinfo->regbase, CL_GR31, 0x00); - - /* misc... */ - WHDR(cinfo, 0); /* Hidden DAC register: - */ - - printk(KERN_DEBUG "cirrusfb: This board has %ld bytes of DRAM memory\n", - info->screen_size); - DPRINTK("EXIT\n"); - return; -} - -static void switch_monitor(struct cirrusfb_info *cinfo, int on) -{ -#ifdef CONFIG_ZORRO /* only works on Zorro boards */ - static int IsOn = 0; /* XXX not ok for multiple boards */ - - DPRINTK("ENTER\n"); - - if (cinfo->btype == BT_PICASSO4) - return; /* nothing to switch */ - if (cinfo->btype == BT_ALPINE) - return; /* nothing to switch */ - if (cinfo->btype == BT_GD5480) - return; /* nothing to switch */ - if (cinfo->btype == BT_PICASSO) { - if ((on && !IsOn) || (!on && IsOn)) - WSFR(cinfo, 0xff); - - DPRINTK("EXIT\n"); - return; - } - if (on) { - switch (cinfo->btype) { - case BT_SD64: - WSFR(cinfo, cinfo->SFR | 0x21); - break; - case BT_PICCOLO: - WSFR(cinfo, cinfo->SFR | 0x28); - break; - case BT_SPECTRUM: - WSFR(cinfo, 0x6f); - break; - default: /* do nothing */ break; - } - } else { - switch (cinfo->btype) { - case BT_SD64: - WSFR(cinfo, cinfo->SFR & 0xde); - break; - case BT_PICCOLO: - WSFR(cinfo, cinfo->SFR & 0xd7); - break; - case BT_SPECTRUM: - WSFR(cinfo, 0x4f); - break; - default: /* do nothing */ break; - } - } - - DPRINTK("EXIT\n"); -#endif /* CONFIG_ZORRO */ -} - -/******************************************/ -/* Linux 2.6-style accelerated functions */ -/******************************************/ - -static void cirrusfb_fillrect(struct fb_info *info, - const struct fb_fillrect *region) -{ - struct fb_fillrect modded; - int vxres, vyres; - struct cirrusfb_info *cinfo = info->par; - int m = info->var.bits_per_pixel; - u32 color = (info->fix.visual == FB_VISUAL_TRUECOLOR) ? - cinfo->pseudo_palette[region->color] : region->color; - - if (info->state != FBINFO_STATE_RUNNING) - return; - if (info->flags & FBINFO_HWACCEL_DISABLED) { - cfb_fillrect(info, region); - return; - } - - vxres = info->var.xres_virtual; - vyres = info->var.yres_virtual; - - memcpy(&modded, region, sizeof(struct fb_fillrect)); - - if (!modded.width || !modded.height || - modded.dx >= vxres || modded.dy >= vyres) - return; - - if (modded.dx + modded.width > vxres) - modded.width = vxres - modded.dx; - if (modded.dy + modded.height > vyres) - modded.height = vyres - modded.dy; - - cirrusfb_RectFill(cinfo->regbase, - info->var.bits_per_pixel, - (region->dx * m) / 8, region->dy, - (region->width * m) / 8, region->height, - color, - info->fix.line_length); -} - -static void cirrusfb_copyarea(struct fb_info *info, - const struct fb_copyarea *area) -{ - struct fb_copyarea modded; - u32 vxres, vyres; - struct cirrusfb_info *cinfo = info->par; - int m = info->var.bits_per_pixel; - - if (info->state != FBINFO_STATE_RUNNING) - return; - if (info->flags & FBINFO_HWACCEL_DISABLED) { - cfb_copyarea(info, area); - return; - } - - vxres = info->var.xres_virtual; - vyres = info->var.yres_virtual; - memcpy(&modded, area, sizeof(struct fb_copyarea)); - - if (!modded.width || !modded.height || - modded.sx >= vxres || modded.sy >= vyres || - modded.dx >= vxres || modded.dy >= vyres) - return; - - if (modded.sx + modded.width > vxres) - modded.width = vxres - modded.sx; - if (modded.dx + modded.width > vxres) - modded.width = vxres - modded.dx; - if (modded.sy + modded.height > vyres) - modded.height = vyres - modded.sy; - if (modded.dy + modded.height > vyres) - modded.height = vyres - modded.dy; - - cirrusfb_BitBLT(cinfo->regbase, info->var.bits_per_pixel, - (area->sx * m) / 8, area->sy, - (area->dx * m) / 8, area->dy, - (area->width * m) / 8, area->height, - info->fix.line_length); - -} - -static void cirrusfb_imageblit(struct fb_info *info, - const struct fb_image *image) -{ - struct cirrusfb_info *cinfo = info->par; - - cirrusfb_WaitBLT(cinfo->regbase); - cfb_imageblit(info, image); -} - -#ifdef CONFIG_PPC_PREP -#define PREP_VIDEO_BASE ((volatile unsigned long) 0xC0000000) -#define PREP_IO_BASE ((volatile unsigned char *) 0x80000000) -static void get_prep_addrs(unsigned long *display, unsigned long *registers) -{ - DPRINTK("ENTER\n"); - - *display = PREP_VIDEO_BASE; - *registers = (unsigned long) PREP_IO_BASE; - - DPRINTK("EXIT\n"); -} - -#endif /* CONFIG_PPC_PREP */ - -#ifdef CONFIG_PCI -static int release_io_ports; - -/* Pulled the logic from XFree86 Cirrus driver to get the memory size, - * based on the DRAM bandwidth bit and DRAM bank switching bit. This - * works with 1MB, 2MB and 4MB configurations (which the Motorola boards - * seem to have. */ -static unsigned int cirrusfb_get_memsize(u8 __iomem *regbase) -{ - unsigned long mem; - unsigned char SRF; - - DPRINTK("ENTER\n"); - - SRF = vga_rseq(regbase, CL_SEQRF); - switch ((SRF & 0x18)) { - case 0x08: - mem = 512 * 1024; - break; - case 0x10: - mem = 1024 * 1024; - break; - /* 64-bit DRAM data bus width; assume 2MB. Also indicates 2MB memory - * on the 5430. - */ - case 0x18: - mem = 2048 * 1024; - break; - default: - printk(KERN_WARNING "CLgenfb: Unknown memory size!\n"); - mem = 1024 * 1024; - } - if (SRF & 0x80) - /* If DRAM bank switching is enabled, there must be twice as much - * memory installed. (4MB on the 5434) - */ - mem *= 2; - - /* TODO: Handling of GD5446/5480 (see XF86 sources ...) */ - - DPRINTK("EXIT\n"); - return mem; -} - -static void get_pci_addrs(const struct pci_dev *pdev, - unsigned long *display, unsigned long *registers) -{ - assert(pdev != NULL); - assert(display != NULL); - assert(registers != NULL); - - DPRINTK("ENTER\n"); - - *display = 0; - *registers = 0; - - /* This is a best-guess for now */ - - if (pci_resource_flags(pdev, 0) & IORESOURCE_IO) { - *display = pci_resource_start(pdev, 1); - *registers = pci_resource_start(pdev, 0); - } else { - *display = pci_resource_start(pdev, 0); - *registers = pci_resource_start(pdev, 1); - } - - assert(*display != 0); - - DPRINTK("EXIT\n"); -} - -static void cirrusfb_pci_unmap(struct fb_info *info) -{ - struct cirrusfb_info *cinfo = info->par; - struct pci_dev *pdev = cinfo->pdev; - - iounmap(info->screen_base); -#if 0 /* if system didn't claim this region, we would... */ - release_mem_region(0xA0000, 65535); -#endif - if (release_io_ports) - release_region(0x3C0, 32); - pci_release_regions(pdev); -} -#endif /* CONFIG_PCI */ - -#ifdef CONFIG_ZORRO -static void __devexit cirrusfb_zorro_unmap(struct fb_info *info) -{ - struct cirrusfb_info *cinfo = info->par; - zorro_release_device(cinfo->zdev); - - if (cinfo->btype == BT_PICASSO4) { - cinfo->regbase -= 0x600000; - iounmap((void *)cinfo->regbase); - iounmap(info->screen_base); - } else { - if (zorro_resource_start(cinfo->zdev) > 0x01000000) - iounmap(info->screen_base); - } -} -#endif /* CONFIG_ZORRO */ - -static int cirrusfb_set_fbinfo(struct fb_info *info) -{ - struct cirrusfb_info *cinfo = info->par; - struct fb_var_screeninfo *var = &info->var; - - info->pseudo_palette = cinfo->pseudo_palette; - info->flags = FBINFO_DEFAULT - | FBINFO_HWACCEL_XPAN - | FBINFO_HWACCEL_YPAN - | FBINFO_HWACCEL_FILLRECT - | FBINFO_HWACCEL_COPYAREA; - if (noaccel) - info->flags |= FBINFO_HWACCEL_DISABLED; - info->fbops = &cirrusfb_ops; - if (cinfo->btype == BT_GD5480) { - if (var->bits_per_pixel == 16) - info->screen_base += 1 * MB_; - if (var->bits_per_pixel == 24 || var->bits_per_pixel == 32) - info->screen_base += 2 * MB_; - } - - /* Fill fix common fields */ - strlcpy(info->fix.id, cirrusfb_board_info[cinfo->btype].name, - sizeof(info->fix.id)); - - /* monochrome: only 1 memory plane */ - /* 8 bit and above: Use whole memory area */ - info->fix.smem_len = info->screen_size; - if (var->bits_per_pixel == 1) - info->fix.smem_len /= 4; - info->fix.type_aux = 0; - info->fix.xpanstep = 1; - info->fix.ypanstep = 1; - info->fix.ywrapstep = 0; - - /* FIXME: map region at 0xB8000 if available, fill in here */ - info->fix.mmio_len = 0; - info->fix.accel = FB_ACCEL_NONE; - - fb_alloc_cmap(&info->cmap, 256, 0); - - return 0; -} - -static int cirrusfb_register(struct fb_info *info) -{ - struct cirrusfb_info *cinfo = info->par; - int err; - enum cirrus_board btype; - - DPRINTK("ENTER\n"); - - printk(KERN_INFO "cirrusfb: Driver for Cirrus Logic based " - "graphic boards, v" CIRRUSFB_VERSION "\n"); - - btype = cinfo->btype; - - /* sanity checks */ - assert(btype != BT_NONE); - - DPRINTK("cirrusfb: (RAM start set to: 0x%p)\n", info->screen_base); - - /* Make pretend we've set the var so our structures are in a "good" */ - /* state, even though we haven't written the mode to the hw yet... */ - info->var = cirrusfb_predefined[cirrusfb_def_mode].var; - info->var.activate = FB_ACTIVATE_NOW; - - err = cirrusfb_decode_var(&info->var, &cinfo->currentmode, info); - if (err < 0) { - /* should never happen */ - DPRINTK("choking on default var... umm, no good.\n"); - goto err_unmap_cirrusfb; - } - - /* set all the vital stuff */ - cirrusfb_set_fbinfo(info); - - err = register_framebuffer(info); - if (err < 0) { - printk(KERN_ERR "cirrusfb: could not register " - "fb device; err = %d!\n", err); - goto err_dealloc_cmap; - } - - DPRINTK("EXIT, returning 0\n"); - return 0; - -err_dealloc_cmap: - fb_dealloc_cmap(&info->cmap); -err_unmap_cirrusfb: - cinfo->unmap(info); - framebuffer_release(info); - return err; -} - -static void __devexit cirrusfb_cleanup(struct fb_info *info) -{ - struct cirrusfb_info *cinfo = info->par; - DPRINTK("ENTER\n"); - - switch_monitor(cinfo, 0); - - unregister_framebuffer(info); - fb_dealloc_cmap(&info->cmap); - printk("Framebuffer unregistered\n"); - cinfo->unmap(info); - framebuffer_release(info); - - DPRINTK("EXIT\n"); -} - -#ifdef CONFIG_PCI -static int cirrusfb_pci_register(struct pci_dev *pdev, - const struct pci_device_id *ent) -{ - struct cirrusfb_info *cinfo; - struct fb_info *info; - enum cirrus_board btype; - unsigned long board_addr, board_size; - int ret; - - ret = pci_enable_device(pdev); - if (ret < 0) { - printk(KERN_ERR "cirrusfb: Cannot enable PCI device\n"); - goto err_out; - } - - info = framebuffer_alloc(sizeof(struct cirrusfb_info), &pdev->dev); - if (!info) { - printk(KERN_ERR "cirrusfb: could not allocate memory\n"); - ret = -ENOMEM; - goto err_disable; - } - - cinfo = info->par; - cinfo->pdev = pdev; - cinfo->btype = btype = (enum cirrus_board) ent->driver_data; - - DPRINTK(" Found PCI device, base address 0 is 0x%x, btype set to %d\n", - pdev->resource[0].start, btype); - DPRINTK(" base address 1 is 0x%x\n", pdev->resource[1].start); - - if (isPReP) { - pci_write_config_dword(pdev, PCI_BASE_ADDRESS_0, 0x00000000); -#ifdef CONFIG_PPC_PREP - get_prep_addrs(&board_addr, &info->fix.mmio_start); -#endif - /* PReP dies if we ioremap the IO registers, but it works w/out... */ - cinfo->regbase = (char __iomem *) info->fix.mmio_start; - } else { - DPRINTK("Attempt to get PCI info for Cirrus Graphics Card\n"); - get_pci_addrs(pdev, &board_addr, &info->fix.mmio_start); - /* FIXME: this forces VGA. alternatives? */ - cinfo->regbase = NULL; - } - - DPRINTK("Board address: 0x%lx, register address: 0x%lx\n", - board_addr, info->fix.mmio_start); - - board_size = (btype == BT_GD5480) ? - 32 * MB_ : cirrusfb_get_memsize(cinfo->regbase); - - ret = pci_request_regions(pdev, "cirrusfb"); - if (ret < 0) { - printk(KERN_ERR "cirrusfb: cannot reserve region 0x%lx, " - "abort\n", - board_addr); - goto err_release_fb; - } -#if 0 /* if the system didn't claim this region, we would... */ - if (!request_mem_region(0xA0000, 65535, "cirrusfb")) { - printk(KERN_ERR "cirrusfb: cannot reserve region 0x%lx, abort\n" -, - 0xA0000L); - ret = -EBUSY; - goto err_release_regions; - } -#endif - if (request_region(0x3C0, 32, "cirrusfb")) - release_io_ports = 1; - - info->screen_base = ioremap(board_addr, board_size); - if (!info->screen_base) { - ret = -EIO; - goto err_release_legacy; - } - - info->fix.smem_start = board_addr; - info->screen_size = board_size; - cinfo->unmap = cirrusfb_pci_unmap; - - printk(KERN_INFO "RAM (%lu kB) at 0x%lx, Cirrus " - "Logic chipset on PCI bus\n", - info->screen_size >> 10, board_addr); - pci_set_drvdata(pdev, info); - - ret = cirrusfb_register(info); - if (ret) - iounmap(info->screen_base); - return ret; - -err_release_legacy: - if (release_io_ports) - release_region(0x3C0, 32); -#if 0 - release_mem_region(0xA0000, 65535); -err_release_regions: -#endif - pci_release_regions(pdev); -err_release_fb: - framebuffer_release(info); -err_disable: -err_out: - return ret; -} - -static void __devexit cirrusfb_pci_unregister(struct pci_dev *pdev) -{ - struct fb_info *info = pci_get_drvdata(pdev); - DPRINTK("ENTER\n"); - - cirrusfb_cleanup(info); - - DPRINTK("EXIT\n"); -} - -static struct pci_driver cirrusfb_pci_driver = { - .name = "cirrusfb", - .id_table = cirrusfb_pci_table, - .probe = cirrusfb_pci_register, - .remove = __devexit_p(cirrusfb_pci_unregister), -#ifdef CONFIG_PM -#if 0 - .suspend = cirrusfb_pci_suspend, - .resume = cirrusfb_pci_resume, -#endif -#endif -}; -#endif /* CONFIG_PCI */ - -#ifdef CONFIG_ZORRO -static int cirrusfb_zorro_register(struct zorro_dev *z, - const struct zorro_device_id *ent) -{ - struct cirrusfb_info *cinfo; - struct fb_info *info; - enum cirrus_board btype; - struct zorro_dev *z2 = NULL; - unsigned long board_addr, board_size, size; - int ret; - - btype = ent->driver_data; - if (cirrusfb_zorro_table2[btype].id2) - z2 = zorro_find_device(cirrusfb_zorro_table2[btype].id2, NULL); - size = cirrusfb_zorro_table2[btype].size; - printk(KERN_INFO "cirrusfb: %s board detected; ", - cirrusfb_board_info[btype].name); - - info = framebuffer_alloc(sizeof(struct cirrusfb_info), &z->dev); - if (!info) { - printk(KERN_ERR "cirrusfb: could not allocate memory\n"); - ret = -ENOMEM; - goto err_out; - } - - cinfo = info->par; - cinfo->btype = btype; - - assert(z); - assert(btype != BT_NONE); - - cinfo->zdev = z; - board_addr = zorro_resource_start(z); - board_size = zorro_resource_len(z); - info->screen_size = size; - - if (!zorro_request_device(z, "cirrusfb")) { - printk(KERN_ERR "cirrusfb: cannot reserve region 0x%lx, " - "abort\n", - board_addr); - ret = -EBUSY; - goto err_release_fb; - } - - printk(" RAM (%lu MB) at $%lx, ", board_size / MB_, board_addr); - - ret = -EIO; - - if (btype == BT_PICASSO4) { - printk(KERN_INFO " REG at $%lx\n", board_addr + 0x600000); - - /* To be precise, for the P4 this is not the */ - /* begin of the board, but the begin of RAM. */ - /* for P4, map in its address space in 2 chunks (### TEST! ) */ - /* (note the ugly hardcoded 16M number) */ - cinfo->regbase = ioremap(board_addr, 16777216); - if (!cinfo->regbase) - goto err_release_region; - - DPRINTK("cirrusfb: Virtual address for board set to: $%p\n", - cinfo->regbase); - cinfo->regbase += 0x600000; - info->fix.mmio_start = board_addr + 0x600000; - - info->fix.smem_start = board_addr + 16777216; - info->screen_base = ioremap(info->fix.smem_start, 16777216); - if (!info->screen_base) - goto err_unmap_regbase; - } else { - printk(KERN_INFO " REG at $%lx\n", - (unsigned long) z2->resource.start); - - info->fix.smem_start = board_addr; - if (board_addr > 0x01000000) - info->screen_base = ioremap(board_addr, board_size); - else - info->screen_base = (caddr_t) ZTWO_VADDR(board_addr); - if (!info->screen_base) - goto err_release_region; - - /* set address for REG area of board */ - cinfo->regbase = (caddr_t) ZTWO_VADDR(z2->resource.start); - info->fix.mmio_start = z2->resource.start; - - DPRINTK("cirrusfb: Virtual address for board set to: $%p\n", - cinfo->regbase); - } - cinfo->unmap = cirrusfb_zorro_unmap; - - printk(KERN_INFO "Cirrus Logic chipset on Zorro bus\n"); - zorro_set_drvdata(z, info); - - ret = cirrusfb_register(info); - if (ret) { - if (btype == BT_PICASSO4) { - iounmap(info->screen_base); - iounmap(cinfo->regbase - 0x600000); - } else if (board_addr > 0x01000000) - iounmap(info->screen_base); - } - return ret; - -err_unmap_regbase: - /* Parental advisory: explicit hack */ - iounmap(cinfo->regbase - 0x600000); -err_release_region: - release_region(board_addr, board_size); -err_release_fb: - framebuffer_release(info); -err_out: - return ret; -} - -void __devexit cirrusfb_zorro_unregister(struct zorro_dev *z) -{ - struct fb_info *info = zorro_get_drvdata(z); - DPRINTK("ENTER\n"); - - cirrusfb_cleanup(info); - - DPRINTK("EXIT\n"); -} - -static struct zorro_driver cirrusfb_zorro_driver = { - .name = "cirrusfb", - .id_table = cirrusfb_zorro_table, - .probe = cirrusfb_zorro_register, - .remove = __devexit_p(cirrusfb_zorro_unregister), -}; -#endif /* CONFIG_ZORRO */ - -static int __init cirrusfb_init(void) -{ - int error = 0; - -#ifndef MODULE - char *option = NULL; - - if (fb_get_options("cirrusfb", &option)) - return -ENODEV; - cirrusfb_setup(option); -#endif - -#ifdef CONFIG_ZORRO - error |= zorro_register_driver(&cirrusfb_zorro_driver); -#endif -#ifdef CONFIG_PCI - error |= pci_register_driver(&cirrusfb_pci_driver); -#endif - return error; -} - -#ifndef MODULE -static int __init cirrusfb_setup(char *options) { - char *this_opt, s[32]; - int i; - - DPRINTK("ENTER\n"); - - if (!options || !*options) - return 0; - - while ((this_opt = strsep(&options, ",")) != NULL) { - if (!*this_opt) continue; - - DPRINTK("cirrusfb_setup: option '%s'\n", this_opt); - - for (i = 0; i < NUM_TOTAL_MODES; i++) { - sprintf(s, "mode:%s", cirrusfb_predefined[i].name); - if (strcmp(this_opt, s) == 0) - cirrusfb_def_mode = i; - } - if (!strcmp(this_opt, "noaccel")) - noaccel = 1; - } - return 0; -} -#endif - - /* - * Modularization - */ - -MODULE_AUTHOR("Copyright 1999,2000 Jeff Garzik <jgarzik@pobox.com>"); -MODULE_DESCRIPTION("Accelerated FBDev driver for Cirrus Logic chips"); -MODULE_LICENSE("GPL"); - -static void __exit cirrusfb_exit(void) -{ -#ifdef CONFIG_PCI - pci_unregister_driver(&cirrusfb_pci_driver); -#endif -#ifdef CONFIG_ZORRO - zorro_unregister_driver(&cirrusfb_zorro_driver); -#endif -} - -module_init(cirrusfb_init); - -#ifdef MODULE -module_exit(cirrusfb_exit); -#endif - -/**********************************************************************/ -/* about the following functions - I have used the same names for the */ -/* functions as Markus Wild did in his Retina driver for NetBSD as */ -/* they just made sense for this purpose. Apart from that, I wrote */ -/* these functions myself. */ -/**********************************************************************/ - -/*** WGen() - write into one of the external/general registers ***/ -static void WGen(const struct cirrusfb_info *cinfo, - int regnum, unsigned char val) -{ - unsigned long regofs = 0; - - if (cinfo->btype == BT_PICASSO) { - /* Picasso II specific hack */ -/* if (regnum == VGA_PEL_IR || regnum == VGA_PEL_D || - regnum == CL_VSSM2) */ - if (regnum == VGA_PEL_IR || regnum == VGA_PEL_D) - regofs = 0xfff; - } - - vga_w(cinfo->regbase, regofs + regnum, val); -} - -/*** RGen() - read out one of the external/general registers ***/ -static unsigned char RGen(const struct cirrusfb_info *cinfo, int regnum) -{ - unsigned long regofs = 0; - - if (cinfo->btype == BT_PICASSO) { - /* Picasso II specific hack */ -/* if (regnum == VGA_PEL_IR || regnum == VGA_PEL_D || - regnum == CL_VSSM2) */ - if (regnum == VGA_PEL_IR || regnum == VGA_PEL_D) - regofs = 0xfff; - } - - return vga_r(cinfo->regbase, regofs + regnum); -} - -/*** AttrOn() - turn on VideoEnable for Attribute controller ***/ -static void AttrOn(const struct cirrusfb_info *cinfo) -{ - assert(cinfo != NULL); - - DPRINTK("ENTER\n"); - - if (vga_rcrt(cinfo->regbase, CL_CRT24) & 0x80) { - /* if we're just in "write value" mode, write back the */ - /* same value as before to not modify anything */ - vga_w(cinfo->regbase, VGA_ATT_IW, - vga_r(cinfo->regbase, VGA_ATT_R)); - } - /* turn on video bit */ -/* vga_w(cinfo->regbase, VGA_ATT_IW, 0x20); */ - vga_w(cinfo->regbase, VGA_ATT_IW, 0x33); - - /* dummy write on Reg0 to be on "write index" mode next time */ - vga_w(cinfo->regbase, VGA_ATT_IW, 0x00); - - DPRINTK("EXIT\n"); -} - -/*** WHDR() - write into the Hidden DAC register ***/ -/* as the HDR is the only extension register that requires special treatment - * (the other extension registers are accessible just like the "ordinary" - * registers of their functional group) here is a specialized routine for - * accessing the HDR - */ -static void WHDR(const struct cirrusfb_info *cinfo, unsigned char val) -{ - unsigned char dummy; - - if (cinfo->btype == BT_PICASSO) { - /* Klaus' hint for correct access to HDR on some boards */ - /* first write 0 to pixel mask (3c6) */ - WGen(cinfo, VGA_PEL_MSK, 0x00); - udelay(200); - /* next read dummy from pixel address (3c8) */ - dummy = RGen(cinfo, VGA_PEL_IW); - udelay(200); - } - /* now do the usual stuff to access the HDR */ - - dummy = RGen(cinfo, VGA_PEL_MSK); - udelay(200); - dummy = RGen(cinfo, VGA_PEL_MSK); - udelay(200); - dummy = RGen(cinfo, VGA_PEL_MSK); - udelay(200); - dummy = RGen(cinfo, VGA_PEL_MSK); - udelay(200); - - WGen(cinfo, VGA_PEL_MSK, val); - udelay(200); - - if (cinfo->btype == BT_PICASSO) { - /* now first reset HDR access counter */ - dummy = RGen(cinfo, VGA_PEL_IW); - udelay(200); - - /* and at the end, restore the mask value */ - /* ## is this mask always 0xff? */ - WGen(cinfo, VGA_PEL_MSK, 0xff); - udelay(200); - } -} - -/*** WSFR() - write to the "special function register" (SFR) ***/ -static void WSFR(struct cirrusfb_info *cinfo, unsigned char val) -{ -#ifdef CONFIG_ZORRO - assert(cinfo->regbase != NULL); - cinfo->SFR = val; - z_writeb(val, cinfo->regbase + 0x8000); -#endif -} - -/* The Picasso has a second register for switching the monitor bit */ -static void WSFR2(struct cirrusfb_info *cinfo, unsigned char val) -{ -#ifdef CONFIG_ZORRO - /* writing an arbitrary value to this one causes the monitor switcher */ - /* to flip to Amiga display */ - assert(cinfo->regbase != NULL); - cinfo->SFR = val; - z_writeb(val, cinfo->regbase + 0x9000); -#endif -} - -/*** WClut - set CLUT entry (range: 0..63) ***/ -static void WClut(struct cirrusfb_info *cinfo, unsigned char regnum, unsigned char red, - unsigned char green, unsigned char blue) -{ - unsigned int data = VGA_PEL_D; - - /* address write mode register is not translated.. */ - vga_w(cinfo->regbase, VGA_PEL_IW, regnum); - - if (cinfo->btype == BT_PICASSO || cinfo->btype == BT_PICASSO4 || - cinfo->btype == BT_ALPINE || cinfo->btype == BT_GD5480) { - /* but DAC data register IS, at least for Picasso II */ - if (cinfo->btype == BT_PICASSO) - data += 0xfff; - vga_w(cinfo->regbase, data, red); - vga_w(cinfo->regbase, data, green); - vga_w(cinfo->regbase, data, blue); - } else { - vga_w(cinfo->regbase, data, blue); - vga_w(cinfo->regbase, data, green); - vga_w(cinfo->regbase, data, red); - } -} - -#if 0 -/*** RClut - read CLUT entry (range 0..63) ***/ -static void RClut(struct cirrusfb_info *cinfo, unsigned char regnum, unsigned char *red, - unsigned char *green, unsigned char *blue) -{ - unsigned int data = VGA_PEL_D; - - vga_w(cinfo->regbase, VGA_PEL_IR, regnum); - - if (cinfo->btype == BT_PICASSO || cinfo->btype == BT_PICASSO4 || - cinfo->btype == BT_ALPINE || cinfo->btype == BT_GD5480) { - if (cinfo->btype == BT_PICASSO) - data += 0xfff; - *red = vga_r(cinfo->regbase, data); - *green = vga_r(cinfo->regbase, data); - *blue = vga_r(cinfo->regbase, data); - } else { - *blue = vga_r(cinfo->regbase, data); - *green = vga_r(cinfo->regbase, data); - *red = vga_r(cinfo->regbase, data); - } -} -#endif - -/******************************************************************* - cirrusfb_WaitBLT() - - Wait for the BitBLT engine to complete a possible earlier job -*********************************************************************/ - -/* FIXME: use interrupts instead */ -static void cirrusfb_WaitBLT(u8 __iomem *regbase) -{ - /* now busy-wait until we're done */ - while (vga_rgfx(regbase, CL_GR31) & 0x08) - /* do nothing */ ; -} - -/******************************************************************* - cirrusfb_BitBLT() - - perform accelerated "scrolling" -********************************************************************/ - -static void cirrusfb_BitBLT(u8 __iomem *regbase, int bits_per_pixel, - u_short curx, u_short cury, - u_short destx, u_short desty, - u_short width, u_short height, - u_short line_length) -{ - u_short nwidth, nheight; - u_long nsrc, ndest; - u_char bltmode; - - DPRINTK("ENTER\n"); - - nwidth = width - 1; - nheight = height - 1; - - bltmode = 0x00; - /* if source adr < dest addr, do the Blt backwards */ - if (cury <= desty) { - if (cury == desty) { - /* if src and dest are on the same line, check x */ - if (curx < destx) - bltmode |= 0x01; - } else - bltmode |= 0x01; - } - if (!bltmode) { - /* standard case: forward blitting */ - nsrc = (cury * line_length) + curx; - ndest = (desty * line_length) + destx; - } else { - /* this means start addresses are at the end, - * counting backwards - */ - nsrc = cury * line_length + curx + - nheight * line_length + nwidth; - ndest = desty * line_length + destx + - nheight * line_length + nwidth; - } - - /* - run-down of registers to be programmed: - destination pitch - source pitch - BLT width/height - source start - destination start - BLT mode - BLT ROP - VGA_GFX_SR_VALUE / VGA_GFX_SR_ENABLE: "fill color" - start/stop - */ - - cirrusfb_WaitBLT(regbase); - - /* pitch: set to line_length */ - /* dest pitch low */ - vga_wgfx(regbase, CL_GR24, line_length & 0xff); - /* dest pitch hi */ - vga_wgfx(regbase, CL_GR25, line_length >> 8); - /* source pitch low */ - vga_wgfx(regbase, CL_GR26, line_length & 0xff); - /* source pitch hi */ - vga_wgfx(regbase, CL_GR27, line_length >> 8); - - /* BLT width: actual number of pixels - 1 */ - /* BLT width low */ - vga_wgfx(regbase, CL_GR20, nwidth & 0xff); - /* BLT width hi */ - vga_wgfx(regbase, CL_GR21, nwidth >> 8); - - /* BLT height: actual number of lines -1 */ - /* BLT height low */ - vga_wgfx(regbase, CL_GR22, nheight & 0xff); - /* BLT width hi */ - vga_wgfx(regbase, CL_GR23, nheight >> 8); - - /* BLT destination */ - /* BLT dest low */ - vga_wgfx(regbase, CL_GR28, (u_char) (ndest & 0xff)); - /* BLT dest mid */ - vga_wgfx(regbase, CL_GR29, (u_char) (ndest >> 8)); - /* BLT dest hi */ - vga_wgfx(regbase, CL_GR2A, (u_char) (ndest >> 16)); - - /* BLT source */ - /* BLT src low */ - vga_wgfx(regbase, CL_GR2C, (u_char) (nsrc & 0xff)); - /* BLT src mid */ - vga_wgfx(regbase, CL_GR2D, (u_char) (nsrc >> 8)); - /* BLT src hi */ - vga_wgfx(regbase, CL_GR2E, (u_char) (nsrc >> 16)); - - /* BLT mode */ - vga_wgfx(regbase, CL_GR30, bltmode); /* BLT mode */ - - /* BLT ROP: SrcCopy */ - vga_wgfx(regbase, CL_GR32, 0x0d); /* BLT ROP */ - - /* and finally: GO! */ - vga_wgfx(regbase, CL_GR31, 0x02); /* BLT Start/status */ - - DPRINTK("EXIT\n"); -} - -/******************************************************************* - cirrusfb_RectFill() - - perform accelerated rectangle fill -********************************************************************/ - -static void cirrusfb_RectFill(u8 __iomem *regbase, int bits_per_pixel, - u_short x, u_short y, u_short width, u_short height, - u_char color, u_short line_length) -{ - u_short nwidth, nheight; - u_long ndest; - u_char op; - - DPRINTK("ENTER\n"); - - nwidth = width - 1; - nheight = height - 1; - - ndest = (y * line_length) + x; - - cirrusfb_WaitBLT(regbase); - - /* pitch: set to line_length */ - vga_wgfx(regbase, CL_GR24, line_length & 0xff); /* dest pitch low */ - vga_wgfx(regbase, CL_GR25, line_length >> 8); /* dest pitch hi */ - vga_wgfx(regbase, CL_GR26, line_length & 0xff); /* source pitch low */ - vga_wgfx(regbase, CL_GR27, line_length >> 8); /* source pitch hi */ - - /* BLT width: actual number of pixels - 1 */ - vga_wgfx(regbase, CL_GR20, nwidth & 0xff); /* BLT width low */ - vga_wgfx(regbase, CL_GR21, nwidth >> 8); /* BLT width hi */ - - /* BLT height: actual number of lines -1 */ - vga_wgfx(regbase, CL_GR22, nheight & 0xff); /* BLT height low */ - vga_wgfx(regbase, CL_GR23, nheight >> 8); /* BLT width hi */ - - /* BLT destination */ - /* BLT dest low */ - vga_wgfx(regbase, CL_GR28, (u_char) (ndest & 0xff)); - /* BLT dest mid */ - vga_wgfx(regbase, CL_GR29, (u_char) (ndest >> 8)); - /* BLT dest hi */ - vga_wgfx(regbase, CL_GR2A, (u_char) (ndest >> 16)); - - /* BLT source: set to 0 (is a dummy here anyway) */ - vga_wgfx(regbase, CL_GR2C, 0x00); /* BLT src low */ - vga_wgfx(regbase, CL_GR2D, 0x00); /* BLT src mid */ - vga_wgfx(regbase, CL_GR2E, 0x00); /* BLT src hi */ - - /* This is a ColorExpand Blt, using the */ - /* same color for foreground and background */ - vga_wgfx(regbase, VGA_GFX_SR_VALUE, color); /* foreground color */ - vga_wgfx(regbase, VGA_GFX_SR_ENABLE, color); /* background color */ - - op = 0xc0; - if (bits_per_pixel == 16) { - vga_wgfx(regbase, CL_GR10, color); /* foreground color */ - vga_wgfx(regbase, CL_GR11, color); /* background color */ - op = 0x50; - op = 0xd0; - } else if (bits_per_pixel == 32) { - vga_wgfx(regbase, CL_GR10, color); /* foreground color */ - vga_wgfx(regbase, CL_GR11, color); /* background color */ - vga_wgfx(regbase, CL_GR12, color); /* foreground color */ - vga_wgfx(regbase, CL_GR13, color); /* background color */ - vga_wgfx(regbase, CL_GR14, 0); /* foreground color */ - vga_wgfx(regbase, CL_GR15, 0); /* background color */ - op = 0x50; - op = 0xf0; - } - /* BLT mode: color expand, Enable 8x8 copy (faster?) */ - vga_wgfx(regbase, CL_GR30, op); /* BLT mode */ - - /* BLT ROP: SrcCopy */ - vga_wgfx(regbase, CL_GR32, 0x0d); /* BLT ROP */ - - /* and finally: GO! */ - vga_wgfx(regbase, CL_GR31, 0x02); /* BLT Start/status */ - - DPRINTK("EXIT\n"); -} - -/************************************************************************** - * bestclock() - determine closest possible clock lower(?) than the - * desired pixel clock - **************************************************************************/ -static void bestclock(long freq, long *best, long *nom, - long *den, long *div, long maxfreq) -{ - long n, h, d, f; - - assert(best != NULL); - assert(nom != NULL); - assert(den != NULL); - assert(div != NULL); - assert(maxfreq > 0); - - *nom = 0; - *den = 0; - *div = 0; - - DPRINTK("ENTER\n"); - - if (freq < 8000) - freq = 8000; - - if (freq > maxfreq) - freq = maxfreq; - - *best = 0; - f = freq * 10; - - for (n = 32; n < 128; n++) { - d = (143181 * n) / f; - if ((d >= 7) && (d <= 63)) { - if (d > 31) - d = (d / 2) * 2; - h = (14318 * n) / d; - if (abs(h - freq) < abs(*best - freq)) { - *best = h; - *nom = n; - if (d < 32) { - *den = d; - *div = 0; - } else { - *den = d / 2; - *div = 1; - } - } - } - d = DIV_ROUND_UP(143181 * n, f); - if ((d >= 7) && (d <= 63)) { - if (d > 31) - d = (d / 2) * 2; - h = (14318 * n) / d; - if (abs(h - freq) < abs(*best - freq)) { - *best = h; - *nom = n; - if (d < 32) { - *den = d; - *div = 0; - } else { - *den = d / 2; - *div = 1; - } - } - } - } - - DPRINTK("Best possible values for given frequency:\n"); - DPRINTK(" best: %ld kHz nom: %ld den: %ld div: %ld\n", - freq, *nom, *den, *div); - - DPRINTK("EXIT\n"); -} - -/* ------------------------------------------------------------------------- - * - * debugging functions - * - * ------------------------------------------------------------------------- - */ - -#ifdef CIRRUSFB_DEBUG - -/** - * cirrusfb_dbg_print_byte - * @name: name associated with byte value to be displayed - * @val: byte value to be displayed - * - * DESCRIPTION: - * Display an indented string, along with a hexidecimal byte value, and - * its decoded bits. Bits 7 through 0 are listed in left-to-right - * order. - */ - -static -void cirrusfb_dbg_print_byte(const char *name, unsigned char val) -{ - DPRINTK("%8s = 0x%02X (bits 7-0: %c%c%c%c%c%c%c%c)\n", - name, val, - val & 0x80 ? '1' : '0', - val & 0x40 ? '1' : '0', - val & 0x20 ? '1' : '0', - val & 0x10 ? '1' : '0', - val & 0x08 ? '1' : '0', - val & 0x04 ? '1' : '0', - val & 0x02 ? '1' : '0', - val & 0x01 ? '1' : '0'); -} - -/** - * cirrusfb_dbg_print_regs - * @base: If using newmmio, the newmmio base address, otherwise %NULL - * @reg_class: type of registers to read: %CRT, or %SEQ - * - * DESCRIPTION: - * Dumps the given list of VGA CRTC registers. If @base is %NULL, - * old-style I/O ports are queried for information, otherwise MMIO is - * used at the given @base address to query the information. - */ - -static -void cirrusfb_dbg_print_regs(caddr_t regbase, - enum cirrusfb_dbg_reg_class reg_class, ...) -{ - va_list list; - unsigned char val = 0; - unsigned reg; - char *name; - - va_start(list, reg_class); - - name = va_arg(list, char *); - while (name != NULL) { - reg = va_arg(list, int); - - switch (reg_class) { - case CRT: - val = vga_rcrt(regbase, (unsigned char) reg); - break; - case SEQ: - val = vga_rseq(regbase, (unsigned char) reg); - break; - default: - /* should never occur */ - assert(false); - break; - } - - cirrusfb_dbg_print_byte(name, val); - - name = va_arg(list, char *); - } - - va_end(list); -} - -/** - * cirrusfb_dump - * @cirrusfbinfo: - * - * DESCRIPTION: - */ - -static void cirrusfb_dump(void) -{ - cirrusfb_dbg_reg_dump(NULL); -} - -/** - * cirrusfb_dbg_reg_dump - * @base: If using newmmio, the newmmio base address, otherwise %NULL - * - * DESCRIPTION: - * Dumps a list of interesting VGA and CIRRUSFB registers. If @base is %NULL, - * old-style I/O ports are queried for information, otherwise MMIO is - * used at the given @base address to query the information. - */ - -static -void cirrusfb_dbg_reg_dump(caddr_t regbase) -{ - DPRINTK("CIRRUSFB VGA CRTC register dump:\n"); - - cirrusfb_dbg_print_regs(regbase, CRT, - "CR00", 0x00, - "CR01", 0x01, - "CR02", 0x02, - "CR03", 0x03, - "CR04", 0x04, - "CR05", 0x05, - "CR06", 0x06, - "CR07", 0x07, - "CR08", 0x08, - "CR09", 0x09, - "CR0A", 0x0A, - "CR0B", 0x0B, - "CR0C", 0x0C, - "CR0D", 0x0D, - "CR0E", 0x0E, - "CR0F", 0x0F, - "CR10", 0x10, - "CR11", 0x11, - "CR12", 0x12, - "CR13", 0x13, - "CR14", 0x14, - "CR15", 0x15, - "CR16", 0x16, - "CR17", 0x17, - "CR18", 0x18, - "CR22", 0x22, - "CR24", 0x24, - "CR26", 0x26, - "CR2D", 0x2D, - "CR2E", 0x2E, - "CR2F", 0x2F, - "CR30", 0x30, - "CR31", 0x31, - "CR32", 0x32, - "CR33", 0x33, - "CR34", 0x34, - "CR35", 0x35, - "CR36", 0x36, - "CR37", 0x37, - "CR38", 0x38, - "CR39", 0x39, - "CR3A", 0x3A, - "CR3B", 0x3B, - "CR3C", 0x3C, - "CR3D", 0x3D, - "CR3E", 0x3E, - "CR3F", 0x3F, - NULL); - - DPRINTK("\n"); - - DPRINTK("CIRRUSFB VGA SEQ register dump:\n"); - - cirrusfb_dbg_print_regs(regbase, SEQ, - "SR00", 0x00, - "SR01", 0x01, - "SR02", 0x02, - "SR03", 0x03, - "SR04", 0x04, - "SR08", 0x08, - "SR09", 0x09, - "SR0A", 0x0A, - "SR0B", 0x0B, - "SR0D", 0x0D, - "SR10", 0x10, - "SR11", 0x11, - "SR12", 0x12, - "SR13", 0x13, - "SR14", 0x14, - "SR15", 0x15, - "SR16", 0x16, - "SR17", 0x17, - "SR18", 0x18, - "SR19", 0x19, - "SR1A", 0x1A, - "SR1B", 0x1B, - "SR1C", 0x1C, - "SR1D", 0x1D, - "SR1E", 0x1E, - "SR1F", 0x1F, - NULL); - - DPRINTK("\n"); -} - -#endif /* CIRRUSFB_DEBUG */ - |