| /* |
| * 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/config.h> |
| #include <linux/module.h> |
| #include <linux/kernel.h> |
| #include <linux/errno.h> |
| #include <linux/string.h> |
| #include <linux/mm.h> |
| #include <linux/tty.h> |
| #include <linux/slab.h> |
| #include <linux/delay.h> |
| #include <linux/fb.h> |
| #include <linux/init.h> |
| #include <linux/selection.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/processor.h> |
| #define isPReP (_machine == _MACH_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, __FUNCTION__ , ## 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__,__FUNCTION__,__LINE__); \ |
| } |
| #else |
| #define assert(expr) |
| #endif |
| |
| #ifdef TRUE |
| #undef TRUE |
| #endif |
| #ifdef FALSE |
| #undef FALSE |
| #endif |
| #define TRUE 1 |
| #define FALSE 0 |
| |
| #define MB_ (1024*1024) |
| #define KB_ (1024) |
| |
| #define MAX_NUM_BOARDS 7 |
| |
| |
| /***************************************************************** |
| * |
| * chipset information |
| * |
| */ |
| |
| /* board types */ |
| typedef enum { |
| BT_NONE = 0, |
| BT_SD64, |
| BT_PICCOLO, |
| BT_PICASSO, |
| BT_SPECTRUM, |
| BT_PICASSO4, /* GD5446 */ |
| BT_ALPINE, /* GD543x/4x */ |
| BT_GD5480, |
| BT_LAGUNA, /* GD546x */ |
| } cirrusfb_board_t; |
| |
| |
| /* |
| * per-board-type information, used for enumerating and abstracting |
| * chip-specific information |
| * NOTE: MUST be in the same order as cirrusfb_board_t 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 */ |
| unsigned init_sr07 : 1; /* init SR07 during init_vgachip() */ |
| unsigned init_sr1f : 1; /* write SR1F during init_vgachip() */ |
| unsigned scrn_start_bit19 : 1; /* construct bit 19 of screen start address */ |
| |
| /* 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, PCI_DEVICE_ID_##id, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (btype) } |
| |
| static struct pci_device_id cirrusfb_pci_table[] = { |
| CHIP( CIRRUS_5436, BT_ALPINE ), |
| CHIP( CIRRUS_5434_8, BT_ALPINE ), |
| CHIP( CIRRUS_5434_4, BT_ALPINE ), |
| CHIP( CIRRUS_5430, BT_ALPINE ), /* GD-5440 has identical id */ |
| CHIP( CIRRUS_7543, BT_ALPINE ), |
| CHIP( CIRRUS_7548, BT_ALPINE ), |
| CHIP( CIRRUS_5480, BT_GD5480 ), /* MacPicasso probably */ |
| CHIP( CIRRUS_5446, BT_PICASSO4 ), /* Picasso 4 is a GD5446 */ |
| CHIP( CIRRUS_5462, BT_LAGUNA ), /* CL Laguna */ |
| CHIP( CIRRUS_5464, BT_LAGUNA ), /* CL Laguna 3D */ |
| CHIP( 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 { |
| __u32 line_length; /* in BYTES! */ |
| __u32 visual; |
| __u32 type; |
| |
| 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 |
| typedef enum { |
| CRT, |
| SEQ |
| } cirrusfb_dbg_reg_class_t; |
| #endif /* CIRRUSFB_DEBUG */ |
| |
| |
| |
| |
| /* info about board */ |
| struct cirrusfb_info { |
| struct fb_info *info; |
| |
| u8 __iomem *fbmem; |
| u8 __iomem *regbase; |
| u8 __iomem *mem; |
| unsigned long size; |
| cirrusfb_board_t btype; |
| unsigned char SFR; /* Shadow of special function register */ |
| |
| unsigned long fbmem_phys; |
| unsigned long fbregs_phys; |
| |
| struct cirrusfb_regs currentmode; |
| int blank_mode; |
| |
| u32 pseudo_palette[17]; |
| struct { u8 red, green, blue, pad; } palette[256]; |
| |
| #ifdef CONFIG_ZORRO |
| struct zorro_dev *zdev; |
| #endif |
| #ifdef CONFIG_PCI |
| struct pci_dev *pdev; |
| #endif |
| void (*unmap)(struct cirrusfb_info *cinfo); |
| }; |
| |
| |
| static unsigned cirrusfb_def_mode = 1; |
| static int noaccel = 0; |
| |
| /* |
| * 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, |
| .fb_cursor = soft_cursor, |
| }; |
| |
| /*--- Hardware Specific Routines -------------------------------------------*/ |
| static int cirrusfb_decode_var (const struct fb_var_screeninfo *var, |
| struct cirrusfb_regs *regs, |
| const struct fb_info *info); |
| /*--- Internal routines ----------------------------------------------------*/ |
| static void init_vgachip (struct cirrusfb_info *cinfo); |
| 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, cirrusfb_dbg_reg_class_t 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 = 0; |
| |
| /*--- 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) |
| { |
| struct cirrusfb_info *cinfo = info->par; |
| 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 0 ... 1: |
| var->bits_per_pixel = 1; |
| nom = 4; |
| den = 8; |
| break; /* 8 pixel per byte, only 1/4th of mem usable */ |
| case 2 ... 8: |
| var->bits_per_pixel = 8; |
| nom = 1; |
| den = 1; |
| break; /* 1 pixel == 1 byte */ |
| case 9 ... 16: |
| var->bits_per_pixel = 16; |
| nom = 2; |
| den = 1; |
| break; /* 2 bytes per pixel */ |
| case 17 ... 24: |
| var->bits_per_pixel = 24; |
| nom = 3; |
| den = 1; |
| break; /* 3 bytes per pixel */ |
| case 25 ... 32: |
| var->bits_per_pixel = 32; |
| nom = 4; |
| den = 1; |
| break; /* 4 bytes per pixel */ |
| default: |
| printk ("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 > cinfo->size) { |
| printk ("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 ("cirrusfb: using maximum available virtual resolution\n"); |
| for (i = 0; modes[i].xres != -1; i++) { |
| if (modes[i].xres * nom / den * modes[i].yres < cinfo->size / 2) |
| break; |
| } |
| if (modes[i].xres == -1) { |
| printk ("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 ("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.offset = 0; |
| var->green.length = 1; |
| var->blue.offset = 0; |
| var->blue.length = 1; |
| break; |
| |
| case 8: |
| var->red.offset = 0; |
| var->red.length = 6; |
| var->green.offset = 0; |
| var->green.length = 6; |
| var->blue.offset = 0; |
| var->blue.length = 6; |
| 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: |
| 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; |
| |
| 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_WARNING "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, |
| const struct fb_info *info) |
| { |
| long freq; |
| long maxclock; |
| int maxclockidx = 0; |
| struct cirrusfb_info *cinfo = info->par; |
| int xres, hfront, hsync, hback; |
| int yres, vfront, vsync, vback; |
| |
| switch(var->bits_per_pixel) { |
| case 1: |
| regs->line_length = var->xres_virtual / 8; |
| regs->visual = FB_VISUAL_MONO10; |
| maxclockidx = 0; |
| break; |
| |
| case 8: |
| regs->line_length = var->xres_virtual; |
| regs->visual = FB_VISUAL_PSEUDOCOLOR; |
| maxclockidx = 1; |
| break; |
| |
| case 16: |
| regs->line_length = var->xres_virtual * 2; |
| regs->visual = FB_VISUAL_DIRECTCOLOR; |
| maxclockidx = 2; |
| break; |
| |
| case 24: |
| regs->line_length = var->xres_virtual * 3; |
| regs->visual = FB_VISUAL_DIRECTCOLOR; |
| maxclockidx = 3; |
| break; |
| |
| case 32: |
| regs->line_length = var->xres_virtual * 4; |
| regs->visual = FB_VISUAL_DIRECTCOLOR; |
| maxclockidx = 4; |
| break; |
| |
| default: |
| DPRINTK("Unsupported bpp size: %d\n", var->bits_per_pixel); |
| assert (FALSE); |
| /* should never occur */ |
| break; |
| } |
| |
| regs->type = FB_TYPE_PACKED_PIXELS; |
| |
| /* convert from ps to kHz */ |
| freq = 1000000000 / 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_WARNING "cirrusfb: ERROR: 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) |
| freq /= 2; /* Xbh has this type of clock for 32-bit */ |
| 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; |
| regs->HorizBlankEnd = regs->HorizTotal + 5; /* does not count with "-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 (cinfo); |
| |
| 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); |
| |
| DPRINTK ("CRT3: 128+%ld\n", regs.HorizBlankEnd % 32); /* + 128: Compatible read */ |
| 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; |
| |
| if ((cinfo->btype == BT_SD64) || |
| (cinfo->btype == BT_ALPINE) || |
| (cinfo->btype == BT_GD5480)) |
| tmp |= 0x80; /* 6 bit denom; ONLY 5434!!! (bugged me 10 days) */ |
| |
| 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) */ |
| tmp = 0x03; /* enable display memory & CRTC I/O address for color mode */ |
| 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); |
| |
| vga_wcrt (regbase, VGA_CRTC_PRESET_ROW, 0); /* Screen A Preset Row-Scan register */ |
| vga_wcrt (regbase, VGA_CRTC_CURSOR_START, 0); /* text cursor on and start line */ |
| vga_wcrt (regbase, VGA_CRTC_CURSOR_END, 31); /* text cursor end line */ |
| |
| /****************************************************** |
| * |
| * 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"); |
| vga_wseq (regbase, CL_SEQR1F, 0x1a); /* MCLK select */ |
| break; |
| |
| case BT_PICCOLO: |
| DPRINTK ("(for Piccolo)\n"); |
| /* ### ueberall 0x22? */ |
| vga_wseq (regbase, CL_SEQR1F, 0x22); /* ##vorher 1c MCLK select */ |
| vga_wseq (regbase, CL_SEQRF, 0xb0); /* evtl d0 bei 1 bit? avoid FIFO underruns..? */ |
| break; |
| |
| case BT_PICASSO: |
| DPRINTK ("(for Picasso)\n"); |
| vga_wseq (regbase, CL_SEQR1F, 0x22); /* ##vorher 22 MCLK select */ |
| vga_wseq (regbase, CL_SEQRF, 0xd0); /* ## vorher d0 avoid FIFO underruns..? */ |
| break; |
| |
| case BT_SPECTRUM: |
| DPRINTK ("(for Spectrum)\n"); |
| /* ### ueberall 0x22? */ |
| vga_wseq (regbase, CL_SEQR1F, 0x22); /* ##vorher 1c MCLK select */ |
| vga_wseq (regbase, CL_SEQRF, 0xb0); /* evtl d0? avoid FIFO underruns..? */ |
| 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; |
| } |
| |
| WGen (cinfo, VGA_PEL_MSK, 0x01); /* pixel mask: pass-through for first plane */ |
| if (regs.multiplexing) |
| WHDR (cinfo, 0x4a); /* hidden dac reg: 1280x1024 */ |
| else |
| WHDR (cinfo, 0); /* hidden dac: nothing */ |
| vga_wseq (regbase, VGA_SEQ_MEMORY_MODE, 0x06); /* memory mode: odd/even, ext. memory */ |
| vga_wseq (regbase, VGA_SEQ_PLANE_WRITE, 0x01); /* plane mask: only write to first plane */ |
| 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: |
| vga_wseq (regbase, CL_SEQR1F, 0x1d); /* MCLK select */ |
| break; |
| |
| case BT_PICCOLO: |
| vga_wseq (regbase, CL_SEQR1F, 0x22); /* ### vorher 1c MCLK select */ |
| vga_wseq (regbase, CL_SEQRF, 0xb0); /* Fast Page-Mode writes */ |
| break; |
| |
| case BT_PICASSO: |
| vga_wseq (regbase, CL_SEQR1F, 0x22); /* ### vorher 1c MCLK select */ |
| vga_wseq (regbase, CL_SEQRF, 0xb0); /* Fast Page-Mode writes */ |
| break; |
| |
| case BT_SPECTRUM: |
| vga_wseq (regbase, CL_SEQR1F, 0x22); /* ### vorher 1c MCLK select */ |
| vga_wseq (regbase, CL_SEQRF, 0xb0); /* Fast Page-Mode writes */ |
| break; |
| |
| case BT_PICASSO4: |
| #ifdef CONFIG_ZORRO |
| vga_wseq (regbase, CL_SEQRF, 0xb8); /* ### INCOMPLETE!! */ |
| #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; |
| } |
| |
| vga_wgfx (regbase, VGA_GFX_MODE, 64); /* mode register: 256 color mode */ |
| WGen (cinfo, VGA_PEL_MSK, 0xff); /* pixel mask: pass-through all planes */ |
| if (regs.multiplexing) |
| WHDR (cinfo, 0x4a); /* hidden dac reg: 1280x1024 */ |
| else |
| WHDR (cinfo, 0); /* hidden dac: nothing */ |
| vga_wseq (regbase, VGA_SEQ_MEMORY_MODE, 0x0a); /* memory mode: chain4, ext. memory */ |
| vga_wseq (regbase, VGA_SEQ_PLANE_WRITE, 0xff); /* plane mask: enable writing to all 4 planes */ |
| 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: |
| vga_wseq (regbase, CL_SEQR7, 0xf7); /* Extended Sequencer Mode: 256c col. mode */ |
| vga_wseq (regbase, CL_SEQR1F, 0x1e); /* MCLK select */ |
| break; |
| |
| case BT_PICCOLO: |
| vga_wseq (regbase, CL_SEQR7, 0x87); |
| vga_wseq (regbase, CL_SEQRF, 0xb0); /* Fast Page-Mode writes */ |
| vga_wseq (regbase, CL_SEQR1F, 0x22); /* MCLK select */ |
| break; |
| |
| case BT_PICASSO: |
| vga_wseq (regbase, CL_SEQR7, 0x27); |
| vga_wseq (regbase, CL_SEQRF, 0xb0); /* Fast Page-Mode writes */ |
| vga_wseq (regbase, CL_SEQR1F, 0x22); /* MCLK select */ |
| break; |
| |
| case BT_SPECTRUM: |
| vga_wseq (regbase, CL_SEQR7, 0x87); |
| vga_wseq (regbase, CL_SEQRF, 0xb0); /* Fast Page-Mode writes */ |
| vga_wseq (regbase, CL_SEQR1F, 0x22); /* MCLK select */ |
| 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; |
| } |
| |
| vga_wgfx (regbase, VGA_GFX_MODE, 64); /* mode register: 256 color mode */ |
| WGen (cinfo, VGA_PEL_MSK, 0xff); /* pixel mask: pass-through all planes */ |
| #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 |
| vga_wseq (regbase, VGA_SEQ_MEMORY_MODE, 0x0a); /* memory mode: chain4, ext. memory */ |
| vga_wseq (regbase, VGA_SEQ_PLANE_WRITE, 0xff); /* plane mask: enable writing to all 4 planes */ |
| 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: |
| vga_wseq (regbase, CL_SEQR7, 0xf9); /* Extended Sequencer Mode: 256c col. mode */ |
| vga_wseq (regbase, CL_SEQR1F, 0x1e); /* MCLK select */ |
| break; |
| |
| case BT_PICCOLO: |
| vga_wseq (regbase, CL_SEQR7, 0x85); |
| vga_wseq (regbase, CL_SEQRF, 0xb0); /* Fast Page-Mode writes */ |
| vga_wseq (regbase, CL_SEQR1F, 0x22); /* MCLK select */ |
| break; |
| |
| case BT_PICASSO: |
| vga_wseq (regbase, CL_SEQR7, 0x25); |
| vga_wseq (regbase, CL_SEQRF, 0xb0); /* Fast Page-Mode writes */ |
| vga_wseq (regbase, CL_SEQR1F, 0x22); /* MCLK select */ |
| break; |
| |
| case BT_SPECTRUM: |
| vga_wseq (regbase, CL_SEQR7, 0x85); |
| vga_wseq (regbase, CL_SEQRF, 0xb0); /* Fast Page-Mode writes */ |
| vga_wseq (regbase, CL_SEQR1F, 0x22); /* MCLK select */ |
| 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; |
| } |
| |
| vga_wgfx (regbase, VGA_GFX_MODE, 64); /* mode register: 256 color mode */ |
| WGen (cinfo, VGA_PEL_MSK, 0xff); /* pixel mask: pass-through all planes */ |
| WHDR (cinfo, 0xc5); /* hidden dac reg: 8-8-8 mode (24 or 32) */ |
| vga_wseq (regbase, VGA_SEQ_MEMORY_MODE, 0x0a); /* memory mode: chain4, ext. memory */ |
| vga_wseq (regbase, VGA_SEQ_PLANE_WRITE, 0xff); /* plane mask: enable writing to all 4 planes */ |
| 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 */ |
| |
| vga_wcrt (regbase, CL_CRT1B, tmp); /* screen start addr #16-18, fastpagemode cycles */ |
| |
| if (cinfo->btype == BT_SD64 || |
| cinfo->btype == BT_PICASSO4 || |
| cinfo->btype == BT_ALPINE || |
| cinfo->btype == BT_GD5480) |
| vga_wcrt (regbase, CL_CRT1D, 0x00); /* screen start address bit 19 */ |
| |
| vga_wcrt (regbase, VGA_CRTC_CURSOR_HI, 0); /* text cursor location high */ |
| vga_wcrt (regbase, VGA_CRTC_CURSOR_LO, 0); /* text cursor location low */ |
| vga_wcrt (regbase, VGA_CRTC_UNDERLINE, 0); /* underline row scanline = at very bottom */ |
| |
| vga_wattr (regbase, VGA_ATC_MODE, 1); /* controller mode */ |
| vga_wattr (regbase, VGA_ATC_OVERSCAN, 0); /* overscan (border) color */ |
| vga_wattr (regbase, VGA_ATC_PLANE_ENABLE, 15); /* color plane enable */ |
| vga_wattr (regbase, CL_AR33, 0); /* pixel panning */ |
| vga_wattr (regbase, VGA_ATC_COLOR_PAGE, 0); /* color select */ |
| |
| /* [ EGS: SetOffset(); ] */ |
| /* From SetOffset(): Turn on VideoEnable bit in Attribute controller */ |
| AttrOn (cinfo); |
| |
| vga_wgfx (regbase, VGA_GFX_SR_VALUE, 0); /* set/reset register */ |
| vga_wgfx (regbase, VGA_GFX_SR_ENABLE, 0); /* set/reset enable */ |
| vga_wgfx (regbase, VGA_GFX_COMPARE_VALUE, 0); /* color compare */ |
| vga_wgfx (regbase, VGA_GFX_DATA_ROTATE, 0); /* data rotate */ |
| vga_wgfx (regbase, VGA_GFX_PLANE_READ, 0); /* read map select */ |
| vga_wgfx (regbase, VGA_GFX_MISC, 1); /* miscellaneous register */ |
| vga_wgfx (regbase, VGA_GFX_COMPARE_MASK, 15); /* color don't care */ |
| vga_wgfx (regbase, VGA_GFX_BIT_MASK, 255); /* bit mask */ |
| |
| vga_wseq (regbase, CL_SEQR12, 0x0); /* graphics cursor attributes: nothing special */ |
| |
| /* 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; |
| info->fix.type = regs.type; |
| info->fix.visual = regs.visual; |
| info->fix.line_length = regs.line_length; |
| |
| /* 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); |
| |
| switch (info->var.bits_per_pixel) { |
| case 8: |
| ((u8*)(info->pseudo_palette))[regno] = v; |
| break; |
| case 16: |
| ((u16*)(info->pseudo_palette))[regno] = v; |
| break; |
| case 24: |
| case 32: |
| ((u32*)(info->pseudo_palette))[regno] = v; |
| break; |
| } |
| return 0; |
| } |
| |
| cinfo->palette[regno].red = red; |
| cinfo->palette[regno].green = green; |
| cinfo->palette[regno].blue = blue; |
| |
| 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 * cinfo->currentmode.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; |
| |
| tmp2 = (vga_rcrt (cinfo->regbase, CL_CRT1B) & 0xf2) | tmp; /* 0xf2 is %11110010, exclude tmp bits */ |
| vga_wcrt (cinfo->regbase, CL_CRT1B, tmp2); |
| |
| /* construct bit 19 of screen start address */ |
| if (cirrusfb_board_info[cinfo->btype].scrn_start_bit19) { |
| tmp2 = 0; |
| if (base & 0x80000) |
| tmp2 = 0x80; |
| vga_wcrt (cinfo->regbase, CL_CRT1D, tmp2); |
| } |
| |
| /* 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); |
| vga_wseq (cinfo->regbase, VGA_SEQ_CLOCK_MODE, val & 0xdf); /* clear "FullBandwidth" bit */ |
| /* 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); |
| vga_wseq (cinfo->regbase, VGA_SEQ_CLOCK_MODE, val | 0x20); /* set "FullBandwidth" bit */ |
| } |
| |
| 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 cirrusfb_info *cinfo) |
| { |
| 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: |
| vga_wcrt (cinfo->regbase, CL_CRT51, 0x00); /* disable flickerfixer */ |
| mdelay (100); |
| vga_wgfx (cinfo->regbase, CL_GR2F, 0x00); /* from Klaus' NetBSD driver: */ |
| vga_wgfx (cinfo->regbase, CL_GR33, 0x00); /* put blitter into 542x compat */ |
| vga_wgfx (cinfo->regbase, CL_GR31, 0x00); /* mode */ |
| break; |
| |
| case BT_GD5480: |
| vga_wgfx (cinfo->regbase, CL_GR2F, 0x00); /* from Klaus' NetBSD driver: */ |
| break; |
| |
| case BT_ALPINE: |
| /* Nothing to do to reset the board. */ |
| break; |
| |
| default: |
| printk (KERN_ERR "cirrusfb: Warning: Unknown board type\n"); |
| break; |
| } |
| |
| assert (cinfo->size > 0); /* make sure RAM size set by this point */ |
| |
| /* 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); |
| |
| vga_wseq (cinfo->regbase, CL_SEQR0, 0x03); /* reset sequencer logic */ |
| |
| vga_wseq (cinfo->regbase, VGA_SEQ_CLOCK_MODE, 0x21); /* FullBandwidth (video off) and 8/9 dot clock */ |
| WGen (cinfo, VGA_MIS_W, 0xc1); /* polarity (-/-), disable access to display memory, VGA_CRTC_START_HI base address: color */ |
| |
| /* vga_wgfx (cinfo->regbase, CL_GRA, 0xce); "magic cookie" - doesn't make any sense to me.. */ |
| vga_wseq (cinfo->regbase, CL_SEQR6, 0x12); /* unlock all extension registers */ |
| |
| vga_wgfx (cinfo->regbase, CL_GR31, 0x04); /* reset blitter */ |
| |
| 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; |
| } |
| } |
| vga_wseq (cinfo->regbase, VGA_SEQ_PLANE_WRITE, 0xff); /* plane mask: nothing */ |
| vga_wseq (cinfo->regbase, VGA_SEQ_CHARACTER_MAP, 0x00); /* character map select: doesn't even matter in gx mode */ |
| vga_wseq (cinfo->regbase, VGA_SEQ_MEMORY_MODE, 0x0e); /* memory mode: chain-4, no odd/even, ext. memory */ |
| |
| /* 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.. */ |
| |
| vga_wseq (cinfo->regbase, CL_SEQR10, 0x00); /* graphics cursor X position (incomplete; position gives rem. 3 bits */ |
| vga_wseq (cinfo->regbase, CL_SEQR11, 0x00); /* graphics cursor Y position (..."... ) */ |
| vga_wseq (cinfo->regbase, CL_SEQR12, 0x00); /* graphics cursor attributes */ |
| vga_wseq (cinfo->regbase, CL_SEQR13, 0x00); /* graphics cursor pattern address */ |
| |
| /* writing these on a P4 might give problems.. */ |
| if (cinfo->btype != BT_PICASSO4) { |
| vga_wseq (cinfo->regbase, CL_SEQR17, 0x00); /* configuration readback and ext. color */ |
| vga_wseq (cinfo->regbase, CL_SEQR18, 0x02); /* signature generator */ |
| } |
| |
| /* MCLK select etc. */ |
| if (bi->init_sr1f) |
| vga_wseq (cinfo->regbase, CL_SEQR1F, bi->sr1f); |
| |
| vga_wcrt (cinfo->regbase, VGA_CRTC_PRESET_ROW, 0x00); /* Screen A preset row scan: none */ |
| vga_wcrt (cinfo->regbase, VGA_CRTC_CURSOR_START, 0x20); /* Text cursor start: disable text cursor */ |
| vga_wcrt (cinfo->regbase, VGA_CRTC_CURSOR_END, 0x00); /* Text cursor end: - */ |
| vga_wcrt (cinfo->regbase, VGA_CRTC_START_HI, 0x00); /* Screen start address high: 0 */ |
| vga_wcrt (cinfo->regbase, VGA_CRTC_START_LO, 0x00); /* Screen start address low: 0 */ |
| vga_wcrt (cinfo->regbase, VGA_CRTC_CURSOR_HI, 0x00); /* text cursor location high: 0 */ |
| vga_wcrt (cinfo->regbase, VGA_CRTC_CURSOR_LO, 0x00); /* text cursor location low: 0 */ |
| |
| vga_wcrt (cinfo->regbase, VGA_CRTC_UNDERLINE, 0x00); /* Underline Row scanline: - */ |
| vga_wcrt (cinfo->regbase, VGA_CRTC_MODE, 0xc3); /* mode control: timing enable, byte mode, no compat modes */ |
| vga_wcrt (cinfo->regbase, VGA_CRTC_LINE_COMPARE, 0x00); /* Line Compare: not needed */ |
| /* ### add 0x40 for text modes with > 30 MHz pixclock */ |
| vga_wcrt (cinfo->regbase, CL_CRT1B, 0x02); /* ext. display controls: ext.adr. wrap */ |
| |
| vga_wgfx (cinfo->regbase, VGA_GFX_SR_VALUE, 0x00); /* Set/Reset registes: - */ |
| vga_wgfx (cinfo->regbase, VGA_GFX_SR_ENABLE, 0x00); /* Set/Reset enable: - */ |
| vga_wgfx (cinfo->regbase, VGA_GFX_COMPARE_VALUE, 0x00); /* Color Compare: - */ |
| vga_wgfx (cinfo->regbase, VGA_GFX_DATA_ROTATE, 0x00); /* Data Rotate: - */ |
| vga_wgfx (cinfo->regbase, VGA_GFX_PLANE_READ, 0x00); /* Read Map Select: - */ |
| vga_wgfx (cinfo->regbase, VGA_GFX_MODE, 0x00); /* Mode: conf. for 16/4/2 color mode, no odd/even, read/write mode 0 */ |
| vga_wgfx (cinfo->regbase, VGA_GFX_MISC, 0x01); /* Miscellaneous: memory map base address, graphics mode */ |
| vga_wgfx (cinfo->regbase, VGA_GFX_COMPARE_MASK, 0x0f); /* Color Don't care: involve all planes */ |
| vga_wgfx (cinfo->regbase, VGA_GFX_BIT_MASK, 0xff); /* Bit Mask: no mask at all */ |
| if (cinfo->btype == BT_ALPINE) |
| vga_wgfx (cinfo->regbase, CL_GRB, 0x20); /* (5434 can't have bit 3 set for bitblt) */ |
| else |
| vga_wgfx (cinfo->regbase, CL_GRB, 0x28); /* Graphics controller mode extensions: finer granularity, 8byte data latches */ |
| |
| 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: - */ |
| /* vga_wgfx (cinfo->regbase, CL_GR10, 0x00); *//* Background color byte 1: - */ |
| /* vga_wgfx (cinfo->regbase, CL_GR11, 0x00); */ |
| |
| vga_wattr (cinfo->regbase, VGA_ATC_PALETTE0, 0x00); /* Attribute Controller palette registers: "identity mapping" */ |
| 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); |
| |
| vga_wattr (cinfo->regbase, VGA_ATC_MODE, 0x01); /* Attribute Controller mode: graphics mode */ |
| vga_wattr (cinfo->regbase, VGA_ATC_OVERSCAN, 0x00); /* Overscan color reg.: reg. 0 */ |
| vga_wattr (cinfo->regbase, VGA_ATC_PLANE_ENABLE, 0x0f); /* Color Plane enable: Enable all 4 planes */ |
| /* ### vga_wattr (cinfo->regbase, CL_AR33, 0x00); * Pixel Panning: - */ |
| vga_wattr (cinfo->regbase, VGA_ATC_COLOR_PAGE, 0x00); /* Color Select: - */ |
| |
| WGen (cinfo, VGA_PEL_MSK, 0xff); /* Pixel mask: no mask */ |
| |
| if (cinfo->btype != BT_ALPINE && cinfo->btype != BT_GD5480) |
| WGen (cinfo, VGA_MIS_W, 0xc3); /* polarity (-/-), enable display mem, VGA_CRTC_START_HI i/o base = color */ |
| |
| vga_wgfx (cinfo->regbase, CL_GR31, 0x04); /* BLT Start/status: Blitter reset */ |
| vga_wgfx (cinfo->regbase, CL_GR31, 0x00); /* - " - : "end-of-reset" */ |
| |
| /* misc... */ |
| WHDR (cinfo, 0); /* Hidden DAC register: - */ |
| |
| printk (KERN_DEBUG "cirrusfb: This board has %ld bytes of DRAM memory\n", cinfo->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_prim_fillrect(struct cirrusfb_info *cinfo, |
| const struct fb_fillrect *region) |
| { |
| int m; /* bytes per pixel */ |
| if(cinfo->info->var.bits_per_pixel == 1) { |
| cirrusfb_RectFill(cinfo->regbase, cinfo->info->var.bits_per_pixel, |
| region->dx / 8, region->dy, |
| region->width / 8, region->height, |
| region->color, |
| cinfo->currentmode.line_length); |
| } else { |
| m = ( cinfo->info->var.bits_per_pixel + 7 ) / 8; |
| cirrusfb_RectFill(cinfo->regbase, cinfo->info->var.bits_per_pixel, |
| region->dx * m, region->dy, |
| region->width * m, region->height, |
| region->color, |
| cinfo->currentmode.line_length); |
| } |
| return; |
| } |
| |
| static void cirrusfb_fillrect (struct fb_info *info, const struct fb_fillrect *region) |
| { |
| struct cirrusfb_info *cinfo = info->par; |
| struct fb_fillrect modded; |
| int vxres, vyres; |
| |
| 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_prim_fillrect(cinfo, &modded); |
| } |
| |
| static void cirrusfb_prim_copyarea(struct cirrusfb_info *cinfo, |
| const struct fb_copyarea *area) |
| { |
| int m; /* bytes per pixel */ |
| if(cinfo->info->var.bits_per_pixel == 1) { |
| cirrusfb_BitBLT(cinfo->regbase, cinfo->info->var.bits_per_pixel, |
| area->sx / 8, area->sy, |
| area->dx / 8, area->dy, |
| area->width / 8, area->height, |
| cinfo->currentmode.line_length); |
| } else { |
| m = ( cinfo->info->var.bits_per_pixel + 7 ) / 8; |
| cirrusfb_BitBLT(cinfo->regbase, cinfo->info->var.bits_per_pixel, |
| area->sx * m, area->sy, |
| area->dx * m, area->dy, |
| area->width * m, area->height, |
| cinfo->currentmode.line_length); |
| } |
| return; |
| } |
| |
| |
| static void cirrusfb_copyarea(struct fb_info *info, const struct fb_copyarea *area) |
| { |
| struct cirrusfb_info *cinfo = info->par; |
| struct fb_copyarea modded; |
| u32 vxres, vyres; |
| modded.sx = area->sx; |
| modded.sy = area->sy; |
| modded.dx = area->dx; |
| modded.dy = area->dy; |
| modded.width = area->width; |
| modded.height = area->height; |
| |
| 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; |
| |
| 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_prim_copyarea(cinfo, &modded); |
| } |
| |
| 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 = 0; |
| |
| /* 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 ("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 cirrusfb_info *cinfo) |
| { |
| struct pci_dev *pdev = cinfo->pdev; |
| |
| iounmap(cinfo->fbmem); |
| #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); |
| framebuffer_release(cinfo->info); |
| pci_disable_device(pdev); |
| } |
| #endif /* CONFIG_PCI */ |
| |
| |
| #ifdef CONFIG_ZORRO |
| static void __devexit cirrusfb_zorro_unmap (struct cirrusfb_info *cinfo) |
| { |
| zorro_release_device(cinfo->zdev); |
| |
| if (cinfo->btype == BT_PICASSO4) { |
| cinfo->regbase -= 0x600000; |
| iounmap ((void *)cinfo->regbase); |
| iounmap ((void *)cinfo->fbmem); |
| } else { |
| if (zorro_resource_start(cinfo->zdev) > 0x01000000) |
| iounmap ((void *)cinfo->fbmem); |
| } |
| framebuffer_release(cinfo->info); |
| } |
| #endif /* CONFIG_ZORRO */ |
| |
| static int cirrusfb_set_fbinfo(struct cirrusfb_info *cinfo) |
| { |
| struct fb_info *info = cinfo->info; |
| struct fb_var_screeninfo *var = &info->var; |
| |
| info->par = cinfo; |
| 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; |
| info->screen_base = cinfo->fbmem; |
| 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_start = cinfo->fbmem_phys; |
| info->fix.smem_len = (var->bits_per_pixel == 1) ? cinfo->size / 4 : cinfo->size; |
| info->fix.type = cinfo->currentmode.type; |
| info->fix.type_aux = 0; |
| info->fix.visual = cinfo->currentmode.visual; |
| info->fix.xpanstep = 1; |
| info->fix.ypanstep = 1; |
| info->fix.ywrapstep = 0; |
| info->fix.line_length = cinfo->currentmode.line_length; |
| |
| /* FIXME: map region at 0xB8000 if available, fill in here */ |
| info->fix.mmio_start = cinfo->fbregs_phys; |
| 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 cirrusfb_info *cinfo) |
| { |
| struct fb_info *info; |
| int err; |
| cirrusfb_board_t btype; |
| |
| DPRINTK ("ENTER\n"); |
| |
| printk (KERN_INFO "cirrusfb: Driver for Cirrus Logic based graphic boards, v" CIRRUSFB_VERSION "\n"); |
| |
| info = cinfo->info; |
| btype = cinfo->btype; |
| |
| /* sanity checks */ |
| assert (btype != BT_NONE); |
| |
| DPRINTK ("cirrusfb: (RAM start set to: 0x%p)\n", cinfo->fbmem); |
| |
| /* 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(cinfo); |
| |
| 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(cinfo); |
| 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(cinfo); |
| |
| 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; |
| cirrusfb_board_t 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->info = info; |
| cinfo->pdev = pdev; |
| cinfo->btype = btype = (cirrusfb_board_t) ent->driver_data; |
| |
| DPRINTK (" Found PCI device, base address 0 is 0x%lx, btype set to %d\n", |
| pdev->resource[0].start, btype); |
| DPRINTK (" base address 1 is 0x%lx\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, &cinfo->fbregs_phys); |
| #endif |
| /* PReP dies if we ioremap the IO registers, but it works w/out... */ |
| cinfo->regbase = (char __iomem *) cinfo->fbregs_phys; |
| } else { |
| DPRINTK ("Attempt to get PCI info for Cirrus Graphics Card\n"); |
| get_pci_addrs (pdev, &board_addr, &cinfo->fbregs_phys); |
| cinfo->regbase = NULL; /* FIXME: this forces VGA. alternatives? */ |
| } |
| |
| DPRINTK ("Board address: 0x%lx, register address: 0x%lx\n", board_addr, cinfo->fbregs_phys); |
| |
| 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; |
| |
| cinfo->fbmem = ioremap(board_addr, board_size); |
| if (!cinfo->fbmem) { |
| ret = -EIO; |
| goto err_release_legacy; |
| } |
| |
| cinfo->fbmem_phys = board_addr; |
| cinfo->size = board_size; |
| cinfo->unmap = cirrusfb_pci_unmap; |
| |
| printk (" RAM (%lu kB) at 0xx%lx, ", cinfo->size / KB_, board_addr); |
| printk ("Cirrus Logic chipset on PCI bus\n"); |
| pci_set_drvdata(pdev, info); |
| |
| return cirrusfb_register(cinfo); |
| |
| 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: |
| pci_disable_device(pdev); |
| 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; |
| cirrusfb_board_t 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->info = info; |
| cinfo->btype = btype; |
| |
| assert (z > 0); |
| assert (z2 >= 0); |
| assert (btype != BT_NONE); |
| |
| cinfo->zdev = z; |
| board_addr = zorro_resource_start(z); |
| board_size = zorro_resource_len(z); |
| cinfo->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 (" 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; |
| cinfo->fbregs_phys = board_addr + 0x600000; |
| |
| cinfo->fbmem_phys = board_addr + 16777216; |
| cinfo->fbmem = ioremap (cinfo->fbmem_phys, 16777216); |
| if (!cinfo->fbmem) |
| goto err_unmap_regbase; |
| } else { |
| printk (" REG at $%lx\n", (unsigned long) z2->resource.start); |
| |
| cinfo->fbmem_phys = board_addr; |
| if (board_addr > 0x01000000) |
| cinfo->fbmem = ioremap (board_addr, board_size); |
| else |
| cinfo->fbmem = (caddr_t) ZTWO_VADDR (board_addr); |
| if (!cinfo->fbmem) |
| goto err_release_region; |
| |
| /* set address for REG area of board */ |
| cinfo->regbase = (caddr_t) ZTWO_VADDR (z2->resource.start); |
| cinfo->fbregs_phys = 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); |
| |
| return cirrusfb_register(cinfo); |
| |
| 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_module_init(&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 */ |
| 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 */ |
| vga_wgfx (regbase, CL_GR28, (u_char) (ndest & 0xff)); /* BLT dest low */ |
| vga_wgfx (regbase, CL_GR29, (u_char) (ndest >> 8)); /* BLT dest mid */ |
| vga_wgfx (regbase, CL_GR2A, (u_char) (ndest >> 16)); /* BLT dest hi */ |
| |
| /* BLT source */ |
| vga_wgfx (regbase, CL_GR2C, (u_char) (nsrc & 0xff)); /* BLT src low */ |
| vga_wgfx (regbase, CL_GR2D, (u_char) (nsrc >> 8)); /* BLT src mid */ |
| vga_wgfx (regbase, CL_GR2E, (u_char) (nsrc >> 16)); /* BLT src hi */ |
| |
| /* 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 */ |
| |
|