| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Linus Torvalds (pre-git) | 4262 | 33.09% | 13 | 16.67% |
| Krzysztof Helt | 3855 | 29.93% | 35 | 44.87% |
| Andrew Morton | 2841 | 22.06% | 2 | 2.56% |
| David Eger | 1066 | 8.28% | 1 | 1.28% |
| Geert Uytterhoeven | 514 | 3.99% | 3 | 3.85% |
| Antonino A. Daplas | 95 | 0.74% | 5 | 6.41% |
| Linus Torvalds | 86 | 0.67% | 5 | 6.41% |
| François Romieu | 45 | 0.35% | 1 | 1.28% |
| Richard Knutsson | 28 | 0.22% | 1 | 1.28% |
| Amol Lad | 26 | 0.20% | 1 | 1.28% |
| Grant Coady | 15 | 0.12% | 1 | 1.28% |
| Adrian Bunk | 13 | 0.10% | 1 | 1.28% |
| Al Viro | 12 | 0.09% | 1 | 1.28% |
| James Simmons | 9 | 0.07% | 1 | 1.28% |
| linux-m68k.org@mandrakesoft.com | 4 | 0.03% | 1 | 1.28% |
| Jeff Garzik | 3 | 0.02% | 2 | 2.56% |
| Gustavo A. R. Silva | 2 | 0.02% | 1 | 1.28% |
| Harvey Harrison | 1 | 0.01% | 1 | 1.28% |
| Masanari Iida | 1 | 0.01% | 1 | 1.28% |
| Rusty Russell | 1 | 0.01% | 1 | 1.28% |
| Total | 12879 | 78 |
/* * 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. * */ #include <linux/module.h> #include <linux/kernel.h> #include <linux/errno.h> #include <linux/string.h> #include <linux/mm.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 #include <video/vga.h> #include <video/cirrus.h> /***************************************************************** * * debugging and utility macros * */ /* disable runtime assertions? */ /* #define CIRRUSFB_NDEBUG */ /* 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, /* GD5434 */ BT_PICCOLO, /* GD5426 */ BT_PICASSO, /* GD5426 or GD5428 */ BT_SPECTRUM, /* GD5426 or GD5428 */ BT_PICASSO4, /* GD5446 */ BT_ALPINE, /* GD543x/4x */ BT_GD5480, BT_LAGUNA, /* GD5462/64 */ BT_LAGUNAB, /* GD5465 */ }; /* * 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 */ 135100, 135100, 85500, 85500, 0 }, .init_sr07 = true, .init_sr1f = true, .scrn_start_bit19 = true, .sr07 = 0xF0, .sr07_1bpp = 0xF0, .sr07_1bpp_mux = 0xF6, .sr07_8bpp = 0xF1, .sr07_8bpp_mux = 0xF7, .sr1f = 0x1E }, [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 = 0xA0, .sr07_1bpp = 0xA0, .sr07_1bpp_mux = 0xA6, .sr07_8bpp = 0xA1, .sr07_8bpp_mux = 0xA7, .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 = 0xA0, .sr07_1bpp_mux = 0xA6, .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 = { /* taken from X11 code */ 170000, 170000, 170000, 170000, 135100, }, .init_sr07 = false, .init_sr1f = false, .scrn_start_bit19 = true, }, [BT_LAGUNAB] = { .name = "CL Laguna AGP", .maxclock = { /* taken from X11 code */ 170000, 250000, 170000, 170000, 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_SD64), CHIP(PCI_DEVICE_ID_CIRRUS_5434_4, BT_SD64), 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_LAGUNAB), /* CL Laguna 3DA*/ { 0, } }; MODULE_DEVICE_TABLE(pci, cirrusfb_pci_table); #undef CHIP #endif /* CONFIG_PCI */ #ifdef CONFIG_ZORRO struct zorrocl { enum cirrus_board type; /* Board type */ u32 regoffset; /* Offset of registers in first Zorro device */ u32 ramsize; /* Size of video RAM in first Zorro device */ /* If zero, use autoprobe on RAM device */ u32 ramoffset; /* Offset of video RAM in first Zorro device */ zorro_id ramid; /* Zorro ID of RAM device */ zorro_id ramid2; /* Zorro ID of optional second RAM device */ }; static const struct zorrocl zcl_sd64 = { .type = BT_SD64, .ramid = ZORRO_PROD_HELFRICH_SD64_RAM, }; static const struct zorrocl zcl_piccolo = { .type = BT_PICCOLO, .ramid = ZORRO_PROD_HELFRICH_PICCOLO_RAM, }; static const struct zorrocl zcl_picasso = { .type = BT_PICASSO, .ramid = ZORRO_PROD_VILLAGE_TRONIC_PICASSO_II_II_PLUS_RAM, }; static const struct zorrocl zcl_spectrum = { .type = BT_SPECTRUM, .ramid = ZORRO_PROD_GVP_EGS_28_24_SPECTRUM_RAM, }; static const struct zorrocl zcl_picasso4_z3 = { .type = BT_PICASSO4, .regoffset = 0x00600000, .ramsize = 4 * MB_, .ramoffset = 0x01000000, /* 0x02000000 for 64 MiB boards */ }; static const struct zorrocl zcl_picasso4_z2 = { .type = BT_PICASSO4, .regoffset = 0x10000, .ramid = ZORRO_PROD_VILLAGE_TRONIC_PICASSO_IV_Z2_RAM1, .ramid2 = ZORRO_PROD_VILLAGE_TRONIC_PICASSO_IV_Z2_RAM2, }; static const struct zorro_device_id cirrusfb_zorro_table[] = { { .id = ZORRO_PROD_HELFRICH_SD64_REG, .driver_data = (unsigned long)&zcl_sd64, }, { .id = ZORRO_PROD_HELFRICH_PICCOLO_REG, .driver_data = (unsigned long)&zcl_piccolo, }, { .id = ZORRO_PROD_VILLAGE_TRONIC_PICASSO_II_II_PLUS_REG, .driver_data = (unsigned long)&zcl_picasso, }, { .id = ZORRO_PROD_GVP_EGS_28_24_SPECTRUM_REG, .driver_data = (unsigned long)&zcl_spectrum, }, { .id = ZORRO_PROD_VILLAGE_TRONIC_PICASSO_IV_Z3, .driver_data = (unsigned long)&zcl_picasso4_z3, }, { .id = ZORRO_PROD_VILLAGE_TRONIC_PICASSO_IV_Z2_REG, .driver_data = (unsigned long)&zcl_picasso4_z2, }, { 0 } }; MODULE_DEVICE_TABLE(zorro, cirrusfb_zorro_table); #endif /* CONFIG_ZORRO */ #ifdef CIRRUSFB_DEBUG enum cirrusfb_dbg_reg_class { CRT, SEQ }; #endif /* CIRRUSFB_DEBUG */ /* info about board */ struct cirrusfb_info { u8 __iomem *regbase; u8 __iomem *laguna_mmio; enum cirrus_board btype; unsigned char SFR; /* Shadow of special function register */ int multiplexing; int doubleVCLK; int blank_mode; u32 pseudo_palette[16]; void (*unmap)(struct fb_info *info); }; static bool noaccel; static char *mode_option = "640x480@60"; /****************************************************************************/ /**** BEGIN PROTOTYPES ******************************************************/ /*--- Interface used by the world ------------------------------------------*/ static int cirrusfb_pan_display(struct fb_var_screeninfo *var, 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, u32 fg_color, u32 bg_color, u_short line_length, u_char blitmode); static void bestclock(long freq, int *nom, int *den, int *div); #ifdef CIRRUSFB_DEBUG static void cirrusfb_dbg_reg_dump(struct fb_info *info, caddr_t regbase); static void cirrusfb_dbg_print_regs(struct fb_info *info, caddr_t regbase, enum cirrusfb_dbg_reg_class reg_class, ...); #endif /* CIRRUSFB_DEBUG */ /*** END PROTOTYPES ********************************************************/ /*****************************************************************************/ /*** BEGIN Interface Used by the World ***************************************/ static inline int is_laguna(const struct cirrusfb_info *cinfo) { return cinfo->btype == BT_LAGUNA || cinfo->btype == BT_LAGUNAB; } 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 **************************************/ /* Check if the MCLK is not a better clock source */ static int cirrusfb_check_mclk(struct fb_info *info, long freq) { struct cirrusfb_info *cinfo = info->par; long mclk = vga_rseq(cinfo->regbase, CL_SEQR1F) & 0x3f; /* Read MCLK value */ mclk = (14318 * mclk) >> 3; dev_dbg(info->device, "Read MCLK of %ld kHz\n", mclk); /* Determine if we should use MCLK instead of VCLK, and if so, what we * should divide it by to get VCLK */ if (abs(freq - mclk) < 250) { dev_dbg(info->device, "Using VCLK = MCLK\n"); return 1; } else if (abs(freq - (mclk / 2)) < 250) { dev_dbg(info->device, "Using VCLK = MCLK/2\n"); return 2; } return 0; } static int cirrusfb_check_pixclock(const struct fb_var_screeninfo *var, struct fb_info *info) { long freq; long maxclock; struct cirrusfb_info *cinfo = info->par; unsigned maxclockidx = var->bits_per_pixel >> 3; /* convert from ps to kHz */ freq = PICOS2KHZ(var->pixclock); dev_dbg(info->device, "desired pixclock: %ld kHz\n", freq); maxclock = cirrusfb_board_info[cinfo->btype].maxclock[maxclockidx]; cinfo->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) { dev_err(info->device, "Frequency greater than maxclock (%ld kHz)\n", maxclock); return -EINVAL; } /* * Additional constraint: 8bpp uses DAC clock doubling to allow maximum * pixel clock */ if (var->bits_per_pixel == 8) { switch (cinfo->btype) { case BT_ALPINE: case BT_SD64: case BT_PICASSO4: if (freq > 85500) cinfo->multiplexing = 1; break; case BT_GD5480: if (freq > 135100) cinfo->multiplexing = 1; break; default: break; } } /* If we have a 1MB 5434, we need to put ourselves in a mode where * the VCLK is double the pixel clock. */ cinfo->doubleVCLK = 0; if (cinfo->btype == BT_SD64 && info->fix.smem_len <= MB_ && var->bits_per_pixel == 16) { cinfo->doubleVCLK = 1; } return 0; } static int cirrusfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info) { int yres; /* memory size in pixels */ unsigned pixels = info->screen_size * 8 / var->bits_per_pixel; struct cirrusfb_info *cinfo = info->par; 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 = 8; var->green = var->red; var->blue = var->red; break; case 16: var->red.offset = 11; var->green.offset = 5; var->blue.offset = 0; var->red.length = 5; var->green.length = 6; var->blue.length = 5; break; case 24: 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: dev_dbg(info->device, "Unsupported bpp size: %d\n", var->bits_per_pixel); return -EINVAL; } if (var->xres_virtual < var->xres) var->xres_virtual = var->xres; /* use highest possible virtual resolution */ if (var->yres_virtual == -1) { var->yres_virtual = pixels / var->xres_virtual; dev_info(info->device, "virtual resolution set to maximum of %dx%d\n", var->xres_virtual, var->yres_virtual); } if (var->yres_virtual < var->yres) var->yres_virtual = var->yres; if (var->xres_virtual * var->yres_virtual > pixels) { dev_err(info->device, "mode %dx%dx%d rejected... " "virtual resolution too high to fit into video memory!\n", var->xres_virtual, var->yres_virtual, var->bits_per_pixel); return -EINVAL; } /* 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; 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) { dev_err(info->device, "ERROR: VerticalTotal >= 1280; " "special treatment required! (TODO)\n"); return -EINVAL; } if (cirrusfb_check_pixclock(var, info)) return -EINVAL; if (!is_laguna(cinfo)) var->accel_flags = FB_ACCELF_TEXT; return 0; } static void cirrusfb_set_mclk_as_source(const struct fb_info *info, int div) { struct cirrusfb_info *cinfo = info->par; unsigned char old1f, old1e; assert(cinfo != NULL); old1f = vga_rseq(cinfo->regbase, CL_SEQR1F) & ~0x40; if (div) { dev_dbg(info->device, "Set %s as pixclock source.\n", (div == 2) ? "MCLK/2" : "MCLK"); old1f |= 0x40; old1e = vga_rseq(cinfo->regbase, CL_SEQR1E) & ~0x1; if (div == 2) old1e |= 1; vga_wseq(cinfo->regbase, CL_SEQR1E, old1e); } vga_wseq(cinfo->regbase, CL_SEQR1F, old1f); } /************************************************************************* 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; u8 __iomem *regbase = cinfo->regbase; unsigned char tmp; int pitch; const struct cirrusfb_board_info_rec *bi; int hdispend, hsyncstart, hsyncend, htotal; int yres, vdispend, vsyncstart, vsyncend, vtotal; long freq; int nom, den, div; unsigned int control = 0, format = 0, threshold = 0; dev_dbg(info->device, "Requested mode: %dx%dx%d\n", var->xres, var->yres, var->bits_per_pixel); 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: info->fix.line_length = var->xres_virtual * var->bits_per_pixel >> 3; info->fix.visual = FB_VISUAL_TRUECOLOR; break; } info->fix.type = FB_TYPE_PACKED_PIXELS; init_vgachip(info); bi = &cirrusfb_board_info[cinfo->btype]; hsyncstart = var->xres + var->right_margin; hsyncend = hsyncstart + var->hsync_len; htotal = (hsyncend + var->left_margin) / 8; hdispend = var->xres / 8; hsyncstart = hsyncstart / 8; hsyncend = hsyncend / 8; vdispend = var->yres; vsyncstart = vdispend + var->lower_margin; vsyncend = vsyncstart + var->vsync_len; vtotal = vsyncend + var->upper_margin; if (var->vmode & FB_VMODE_DOUBLE) { vdispend *= 2; vsyncstart *= 2; vsyncend *= 2; vtotal *= 2; } else if (var->vmode & FB_VMODE_INTERLACED) { vdispend = (vdispend + 1) / 2; vsyncstart = (vsyncstart + 1) / 2; vsyncend = (vsyncend + 1) / 2; vtotal = (vtotal + 1) / 2; } yres = vdispend; if (yres >= 1024) { vtotal /= 2; vsyncstart /= 2; vsyncend /= 2; vdispend /= 2; } vdispend -= 1; vsyncstart -= 1; vsyncend -= 1; vtotal -= 2; if (cinfo->multiplexing) { htotal /= 2; hsyncstart /= 2; hsyncend /= 2; hdispend /= 2; } htotal -= 5; hdispend -= 1; hsyncstart += 1; hsyncend += 1; /* 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 */ dev_dbg(info->device, "CRT0: %d\n", htotal); vga_wcrt(regbase, VGA_CRTC_H_TOTAL, htotal); dev_dbg(info->device, "CRT1: %d\n", hdispend); vga_wcrt(regbase, VGA_CRTC_H_DISP, hdispend); dev_dbg(info->device, "CRT2: %d\n", var->xres / 8); vga_wcrt(regbase, VGA_CRTC_H_BLANK_START, var->xres / 8); /* + 128: Compatible read */ dev_dbg(info->device, "CRT3: 128+%d\n", (htotal + 5) % 32); vga_wcrt(regbase, VGA_CRTC_H_BLANK_END, 128 + ((htotal + 5) % 32)); dev_dbg(info->device, "CRT4: %d\n", hsyncstart); vga_wcrt(regbase, VGA_CRTC_H_SYNC_START, hsyncstart); tmp = hsyncend % 32; if ((htotal + 5) & 32) tmp += 128; dev_dbg(info->device, "CRT5: %d\n", tmp); vga_wcrt(regbase, VGA_CRTC_H_SYNC_END, tmp); dev_dbg(info->device, "CRT6: %d\n", vtotal & 0xff); vga_wcrt(regbase, VGA_CRTC_V_TOTAL, vtotal & 0xff); tmp = 16; /* LineCompare bit #9 */ if (vtotal & 256) tmp |= 1; if (vdispend & 256) tmp |= 2; if (vsyncstart & 256) tmp |= 4; if ((vdispend + 1) & 256) tmp |= 8; if (vtotal & 512) tmp |= 32; if (vdispend & 512) tmp |= 64; if (vsyncstart & 512) tmp |= 128; dev_dbg(info->device, "CRT7: %d\n", tmp); vga_wcrt(regbase, VGA_CRTC_OVERFLOW, tmp); tmp = 0x40; /* LineCompare bit #8 */ if ((vdispend + 1) & 512) tmp |= 0x20; if (var->vmode & FB_VMODE_DOUBLE) tmp |= 0x80; dev_dbg(info->device, "CRT9: %d\n", tmp); vga_wcrt(regbase, VGA_CRTC_MAX_SCAN, tmp); dev_dbg(info->device, "CRT10: %d\n", vsyncstart & 0xff); vga_wcrt(regbase, VGA_CRTC_V_SYNC_START, vsyncstart & 0xff); dev_dbg(info->device, "CRT11: 64+32+%d\n", vsyncend % 16); vga_wcrt(regbase, VGA_CRTC_V_SYNC_END, vsyncend % 16 + 64 + 32); dev_dbg(info->device, "CRT12: %d\n", vdispend & 0xff); vga_wcrt(regbase, VGA_CRTC_V_DISP_END, vdispend & 0xff); dev_dbg(info->device, "CRT15: %d\n", (vdispend + 1) & 0xff); vga_wcrt(regbase, VGA_CRTC_V_BLANK_START, (vdispend + 1) & 0xff); dev_dbg(info->device, "CRT16: %d\n", vtotal & 0xff); vga_wcrt(regbase, VGA_CRTC_V_BLANK_END, vtotal & 0xff); dev_dbg(info->device, "CRT18: 0xff\n"); vga_wcrt(regbase, VGA_CRTC_LINE_COMPARE, 0xff); tmp = 0; if (var->vmode & FB_VMODE_INTERLACED) tmp |= 1; if ((htotal + 5) & 64) tmp |= 16; if ((htotal + 5) & 128) tmp |= 32; if (vtotal & 256) tmp |= 64; if (vtotal & 512) tmp |= 128; dev_dbg(info->device, "CRT1a: %d\n", tmp); vga_wcrt(regbase, CL_CRT1A, tmp); freq = PICOS2KHZ(var->pixclock); if (var->bits_per_pixel == 24) if (cinfo->btype == BT_ALPINE || cinfo->btype == BT_SD64) freq *= 3; if (cinfo->multiplexing) freq /= 2; if (cinfo->doubleVCLK) freq *= 2; bestclock(freq, &nom, &den, &div); dev_dbg(info->device, "VCLK freq: %ld kHz nom: %d den: %d div: %d\n", freq, nom, den, div); /* 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 */ if (cinfo->btype == BT_ALPINE || cinfo->btype == BT_PICASSO4 || cinfo->btype == BT_SD64) { /* if freq is close to mclk or mclk/2 select mclk * as clock source */ int divMCLK = cirrusfb_check_mclk(info, freq); if (divMCLK) nom = 0; cirrusfb_set_mclk_as_source(info, divMCLK); } if (is_laguna(cinfo)) { long pcifc = fb_readl(cinfo->laguna_mmio + 0x3fc); unsigned char tile = fb_readb(cinfo->laguna_mmio + 0x407); unsigned short tile_control; if (cinfo->btype == BT_LAGUNAB) { tile_control = fb_readw(cinfo->laguna_mmio + 0x2c4); tile_control &= ~0x80; fb_writew(tile_control, cinfo->laguna_mmio + 0x2c4); } fb_writel(pcifc | 0x10000000l, cinfo->laguna_mmio + 0x3fc); fb_writeb(tile & 0x3f, cinfo->laguna_mmio + 0x407); control = fb_readw(cinfo->laguna_mmio + 0x402); threshold = fb_readw(cinfo->laguna_mmio + 0xea); control &= ~0x6800; format = 0; threshold &= 0xffc0 & 0x3fbf; } if (nom) { tmp = den << 1; if (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; /* Laguna chipset has reversed clock registers */ if (is_laguna(cinfo)) { vga_wseq(regbase, CL_SEQRE, tmp); vga_wseq(regbase, CL_SEQR1E, nom); } else { vga_wseq(regbase, CL_SEQRE, nom); vga_wseq(regbase, CL_SEQR1E, tmp); } } if (yres >= 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); /* 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, htotal / 2); else vga_wcrt(regbase, VGA_CRTC_REGS, 0x00); /* interlace control */ /* adjust horizontal/vertical sync type (low/high), use VCLK3 */ /* enable display memory & CRTC I/O address for color mode */ tmp = 0x03 | 0xc; 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); /* 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) { dev_dbg(info->device, "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: vga_wseq(regbase, CL_SEQR7, cinfo->multiplexing ? bi->sr07_1bpp_mux : bi->sr07_1bpp); break; case BT_LAGUNA: case BT_LAGUNAB: vga_wseq(regbase, CL_SEQR7, vga_rseq(regbase, CL_SEQR7) & ~0x01); break; default: dev_warn(info->device, "unknown Board\n"); break; } /* Extended Sequencer Mode */ switch (cinfo->btype) { case BT_PICCOLO: case BT_SPECTRUM: /* evtl d0 bei 1 bit? avoid FIFO underruns..? */ vga_wseq(regbase, CL_SEQRF, 0xb0); break; case BT_PICASSO: /* ## vorher d0 avoid FIFO underruns..? */ vga_wseq(regbase, CL_SEQRF, 0xd0); break; case BT_SD64: case BT_PICASSO4: case BT_ALPINE: case BT_GD5480: case BT_LAGUNA: case BT_LAGUNAB: /* do nothing */ break; default: dev_warn(info->device, "unknown Board\n"); break; } /* pixel mask: pass-through for first plane */ WGen(cinfo, VGA_PEL_MSK, 0x01); if (cinfo->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); } /****************************************************** * * 8 bpp * */ else if (var->bits_per_pixel == 8) { dev_dbg(info->device, "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: vga_wseq(regbase, CL_SEQR7, cinfo->multiplexing ? bi->sr07_8bpp_mux : bi->sr07_8bpp); break; case BT_LAGUNA: case BT_LAGUNAB: vga_wseq(regbase, CL_SEQR7, vga_rseq(regbase, CL_SEQR7) | 0x01); threshold |= 0x10; break; default: dev_warn(info->device, "unknown Board\n"); break; } switch (cinfo->btype) { case BT_PICCOLO: case BT_PICASSO: case BT_SPECTRUM: /* 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 case BT_ALPINE: case BT_SD64: case BT_GD5480: case BT_LAGUNA: case BT_LAGUNAB: /* do nothing */ break; default: dev_warn(info->device, "unknown board\n"); break; } /* mode register: 256 color mode */ vga_wgfx(regbase, VGA_GFX_MODE, 64); if (cinfo->multiplexing) /* hidden dac reg: 1280x1024 */ WHDR(cinfo, 0x4a); else /* hidden dac: nothing */ WHDR(cinfo, 0); } /****************************************************** * * 16 bpp * */ else if (var->bits_per_pixel == 16) { dev_dbg(info->device, "preparing for 16 bit deep display\n"); switch (cinfo->btype) { case BT_PICCOLO: case BT_SPECTRUM: vga_wseq(regbase, CL_SEQR7, 0x87); /* Fast Page-Mode writes */ vga_wseq(regbase, CL_SEQRF, 0xb0); break; case BT_PICASSO: vga_wseq(regbase, CL_SEQR7, 0x27); /* Fast Page-Mode writes */ vga_wseq(regbase, CL_SEQRF, 0xb0); break; case BT_SD64: case BT_PICASSO4: case BT_ALPINE: /* Extended Sequencer Mode: 256c col. mode */ vga_wseq(regbase, CL_SEQR7, cinfo->doubleVCLK ? 0xa3 : 0xa7); break; case BT_GD5480: vga_wseq(regbase, CL_SEQR7, 0x17); /* We already set SRF and SR1F */ break; case BT_LAGUNA: case BT_LAGUNAB: vga_wseq(regbase, CL_SEQR7, vga_rseq(regbase, CL_SEQR7) & ~0x01); control |= 0x2000; format |= 0x1400; threshold |= 0x10; break; default: dev_warn(info->device, "unknown Board\n"); break; } /* mode register: 256 color mode */ vga_wgfx(regbase, VGA_GFX_MODE, 64); #ifdef CONFIG_PCI WHDR(cinfo, cinfo->doubleVCLK ? 0xe1 : 0xc1); #elif defined(CONFIG_ZORRO) /* FIXME: CONFIG_PCI and CONFIG_ZORRO may be defined both */ WHDR(cinfo, 0xa0); /* hidden dac reg: nothing special */ #endif } /****************************************************** * * 24 bpp * */ else if (var->bits_per_pixel == 24) { dev_dbg(info->device, "preparing for 24 bit deep display\n"); switch (cinfo->btype) { case BT_PICCOLO: case BT_SPECTRUM: vga_wseq(regbase, CL_SEQR7, 0x85); /* Fast Page-Mode writes */ vga_wseq(regbase, CL_SEQRF, 0xb0); break; case BT_PICASSO: vga_wseq(regbase, CL_SEQR7, 0x25); /* Fast Page-Mode writes */ vga_wseq(regbase, CL_SEQRF, 0xb0); break; case BT_SD64: case BT_PICASSO4: case BT_ALPINE: /* Extended Sequencer Mode: 256c col. mode */ vga_wseq(regbase, CL_SEQR7, 0xa5); break; case BT_GD5480: vga_wseq(regbase, CL_SEQR7, 0x15); /* We already set SRF and SR1F */ break; case BT_LAGUNA: case BT_LAGUNAB: vga_wseq(regbase, CL_SEQR7, vga_rseq(regbase, CL_SEQR7) & ~0x01); control |= 0x4000; format |= 0x2400; threshold |= 0x20; break; default: dev_warn(info->device, "unknown Board\n"); break; } /* mode register: 256 color mode */ vga_wgfx(regbase, VGA_GFX_MODE, 64); /* hidden dac reg: 8-8-8 mode (24 or 32) */ WHDR(cinfo, 0xc5); } /****************************************************** * * unknown/unsupported bpp * */ else dev_err(info->device, "What's this? requested color depth == %d.\n", var->bits_per_pixel); pitch = info->fix.line_length >> 3; vga_wcrt(regbase, VGA_CRTC_OFFSET, pitch & 0xff); tmp = 0x22; if (pitch & 0x100) tmp |= 0x10; /* offset overflow bit */ /* screen start addr #16-18, fastpagemode cycles */ vga_wcrt(regbase, CL_CRT1B, tmp); /* screen start address bit 19 */ if (cirrusfb_board_info[cinfo->btype].scrn_start_bit19) vga_wcrt(regbase, CL_CRT1D, (pitch >> 9) & 1); if (is_laguna(cinfo)) { tmp = 0; if ((htotal + 5) & 256) tmp |= 128; if (hdispend & 256) tmp |= 64; if (hsyncstart & 256) tmp |= 48; if (vtotal & 1024) tmp |= 8; if (vdispend & 1024) tmp |= 4; if (vsyncstart & 1024) tmp |= 3; vga_wcrt(regbase, CL_CRT1E, tmp); dev_dbg(info->device, "CRT1e: %d\n", tmp); } /* pixel panning */ vga_wattr(regbase, CL_AR33, 0); /* [ EGS: SetOffset(); ] */ /* From SetOffset(): Turn on VideoEnable bit in Attribute controller */ AttrOn(cinfo); if (is_laguna(cinfo)) { /* no tiles */ fb_writew(control | 0x1000, cinfo->laguna_mmio + 0x402); fb_writew(format, cinfo->laguna_mmio + 0xc0); fb_writew(threshold, cinfo->laguna_mmio + 0xea); } /* 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); dev_dbg(info->device, "CL_SEQR1: %d\n", tmp); #ifdef CIRRUSFB_DEBUG cirrusfb_dbg_reg_dump(info, NULL); #endif 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; unsigned long base; unsigned char tmp, xpix; struct cirrusfb_info *cinfo = info->par; /* no range checks for xoffset and yoffset, */ /* as fb_pan_display has already done this */ if (var->vmode & FB_VMODE_YWRAP) return -EINVAL; xoffset = var->xoffset * info->var.bits_per_pixel / 8; base = var->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); } if (!is_laguna(cinfo)) cirrusfb_WaitBLT(cinfo->regbase); /* lower 8 + 8 bits of screen start address */ vga_wcrt(cinfo->regbase, VGA_CRTC_START_LO, base & 0xff); vga_wcrt(cinfo->regbase, VGA_CRTC_START_HI, (base >> 8) & 0xff); /* 0xf2 is %11110010, exclude tmp bits */ tmp = vga_rcrt(cinfo->regbase, CL_CRT1B) & 0xf2; /* 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; vga_wcrt(cinfo->regbase, CL_CRT1B, tmp); /* construct bit 19 of screen start address */ if (cirrusfb_board_info[cinfo->btype].scrn_start_bit19) { tmp = vga_rcrt(cinfo->regbase, CL_CRT1D); if (is_laguna(cinfo)) tmp = (tmp & ~0x18) | ((base >> 16) & 0x18); else tmp = (tmp & ~0x80) | ((base >> 12) & 0x80); vga_wcrt(cinfo->regbase, CL_CRT1D, tmp); } /* 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); 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; dev_dbg(info->device, "ENTER, blank mode = %d\n", blank_mode); if (info->state != FBINFO_STATE_RUNNING || current_mode == blank_mode) { dev_dbg(info->device, "EXIT, returning 0\n"); return 0; } /* Undo current */ if (current_mode == FB_BLANK_NORMAL || current_mode == FB_BLANK_UNBLANK) /* clear "FullBandwidth" bit */ val = 0; else /* set "FullBandwidth" bit */ val = 0x20; val |= vga_rseq(cinfo->regbase, VGA_SEQ_CLOCK_MODE) & 0xdf; vga_wseq(cinfo->regbase, VGA_SEQ_CLOCK_MODE, val); switch (blank_mode) { case FB_BLANK_UNBLANK: case FB_BLANK_NORMAL: val = 0x00; break; case FB_BLANK_VSYNC_SUSPEND: val = 0x04; break; case FB_BLANK_HSYNC_SUSPEND: val = 0x02; break; case FB_BLANK_POWERDOWN: val = 0x06; break; default: dev_dbg(info->device, "EXIT, returning 1\n"); return 1; } vga_wgfx(cinfo->regbase, CL_GRE, val); cinfo->blank_mode = blank_mode; dev_dbg(info->device, "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; 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); /* mode */ vga_wgfx(cinfo->regbase, CL_GR31, 0x00); /* fall through */ case BT_GD5480: /* from Klaus' NetBSD driver: */ vga_wgfx(cinfo->regbase, CL_GR2F, 0x00); /* fall through */ case BT_ALPINE: /* put blitter into 542x compat */ vga_wgfx(cinfo->regbase, CL_GR33, 0x00); break; case BT_LAGUNA: case BT_LAGUNAB: /* Nothing to do to reset the board. */ break; default: dev_err(info->device, "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, VGA_SEQ_RESET, 0x03); /* FullBandwidth (video off) and 8/9 dot clock */ vga_wseq(cinfo->regbase, VGA_SEQ_CLOCK_MODE, 0x21); /* "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); switch (cinfo->btype) { case BT_GD5480: vga_wseq(cinfo->regbase, CL_SEQRF, 0x98); break; case BT_ALPINE: case BT_LAGUNA: case BT_LAGUNAB: break; case BT_SD64: #ifdef CONFIG_ZORRO vga_wseq(cinfo->regbase, CL_SEQRF, 0xb8); #endif 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: chain4, ext. memory */ vga_wseq(cinfo->regbase, VGA_SEQ_MEMORY_MODE, 0x0a); /* 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); } /* 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); /* 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); /* ### add 0x40 for text modes with > 30 MHz pixclock */ /* ext. display controls: ext.adr. wrap */ vga_wcrt(cinfo->regbase, CL_CRT1B, 0x02); /* Set/Reset registers: - */ 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 || cinfo->btype == BT_SD64 || is_laguna(cinfo)) /* (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); /* Color Select: - */ vga_wattr(cinfo->regbase, VGA_ATC_COLOR_PAGE, 0x00); WGen(cinfo, VGA_PEL_MSK, 0xff); /* Pixel mask: no mask */ /* 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: - */ 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 */ 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); 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; } } #endif /* CONFIG_ZORRO */ } /******************************************/ /* Linux 2.6-style accelerated functions */ /******************************************/ static int cirrusfb_sync(struct fb_info *info) { struct cirrusfb_info *cinfo = info->par; if (!is_laguna(cinfo)) { while (vga_rgfx(cinfo->regbase, CL_GR31) & 0x03) cpu_relax(); } return 0; } 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, color, info->fix.line_length, 0x40); } 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; unsigned char op = (info->var.bits_per_pixel == 24) ? 0xc : 0x4; if (info->state != FBINFO_STATE_RUNNING) return; /* Alpine/SD64 does not work at 24bpp ??? */ if (info->flags & FBINFO_HWACCEL_DISABLED || image->depth != 1) cfb_imageblit(info, image); else if ((cinfo->btype == BT_ALPINE || cinfo->btype == BT_SD64) && op == 0xc) cfb_imageblit(info, image); else { unsigned size = ((image->width + 7) >> 3) * image->height; int m = info->var.bits_per_pixel; u32 fg, bg; if (info->var.bits_per_pixel == 8) { fg = image->fg_color; bg = image->bg_color; } else { fg = ((u32 *)(info->pseudo_palette))[image->fg_color]; bg = ((u32 *)(info->pseudo_palette))[image->bg_color]; } if (info->var.bits_per_pixel == 24) { /* clear background first */ cirrusfb_RectFill(cinfo->regbase, info->var.bits_per_pixel, (image->dx * m) / 8, image->dy, (image->width * m) / 8, image->height, bg, bg, info->fix.line_length, 0x40); } cirrusfb_RectFill(cinfo->regbase, info->var.bits_per_pixel, (image->dx * m) / 8, image->dy, (image->width * m) / 8, image->height, fg, bg, info->fix.line_length, op); memcpy(info->screen_base, image->data, size); } } #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(struct fb_info *info, u8 __iomem *regbase) { unsigned long mem; struct cirrusfb_info *cinfo = info->par; if (is_laguna(cinfo)) { unsigned char SR14 = vga_rseq(regbase, CL_SEQR14); mem = ((SR14 & 7) + 1) << 20; } else { unsigned char 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: dev_warn(info->device, "Unknown memory size!\n"); mem = 1024 * 1024; } /* If DRAM bank switching is enabled, there must be * twice as much memory installed. (4MB on the 5434) */ if (cinfo->btype != BT_ALPINE && (SRF & 0x80) != 0) mem *= 2; } /* TODO: Handling of GD5446/5480 (see XF86 sources ...) */ 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); *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); } static void cirrusfb_pci_unmap(struct fb_info *info) { struct pci_dev *pdev = to_pci_dev(info->device); struct cirrusfb_info *cinfo = info->par; if (cinfo->laguna_mmio == NULL) iounmap(cinfo->laguna_mmio); 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 cirrusfb_zorro_unmap(struct fb_info *info) { struct cirrusfb_info *cinfo = info->par; struct zorro_dev *zdev = to_zorro_dev(info->device); if (info->fix.smem_start > 16 * MB_) iounmap(info->screen_base); if (info->fix.mmio_start > 16 * MB_) iounmap(cinfo->regbase); zorro_release_device(zdev); } #endif /* CONFIG_ZORRO */ /* 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_sync = cirrusfb_sync, .fb_imageblit = cirrusfb_imageblit, }; 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_IMAGEBLIT | FBINFO_HWACCEL_COPYAREA; if (noaccel || is_laguna(cinfo)) { info->flags |= FBINFO_HWACCEL_DISABLED; info->fix.accel = FB_ACCEL_NONE; } else info->fix.accel = FB_ACCEL_CIRRUS_ALPINE; 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 == 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; 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; /* sanity checks */ assert(cinfo->btype != BT_NONE); /* set all the vital stuff */ cirrusfb_set_fbinfo(info); dev_dbg(info->device, "(RAM start set to: 0x%p)\n", info->screen_base); err = fb_find_mode(&info->var, info, mode_option, NULL, 0, NULL, 8); if (!err) { dev_dbg(info->device, "wrong initial video mode\n"); err = -EINVAL; goto err_dealloc_cmap; } info->var.activate = FB_ACTIVATE_NOW; err = cirrusfb_check_var(&info->var, info); if (err < 0) { /* should never happen */ dev_dbg(info->device, "choking on default var... umm, no good.\n"); goto err_dealloc_cmap; } err = register_framebuffer(info); if (err < 0) { dev_err(info->device, "could not register fb device; err = %d!\n", err); goto err_dealloc_cmap; } return 0; err_dealloc_cmap: fb_dealloc_cmap(&info->cmap); return err; } static void cirrusfb_cleanup(struct fb_info *info) { struct cirrusfb_info *cinfo = info->par; switch_monitor(cinfo, 0); unregister_framebuffer(info); fb_dealloc_cmap(&info->cmap); dev_dbg(info->device, "Framebuffer unregistered\n"); cinfo->unmap(info); framebuffer_release(info); } #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; 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_out; } cinfo = info->par; cinfo->btype = (enum cirrus_board) ent->driver_data; dev_dbg(info->device, " Found PCI device, base address 0 is 0x%Lx, btype set to %d\n", (unsigned long long)pdev->resource[0].start, cinfo->btype); dev_dbg(info->device, " base address 1 is 0x%Lx\n", (unsigned long long)pdev->resource[1].start); dev_dbg(info->device, "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; cinfo->laguna_mmio = ioremap(info->fix.mmio_start, 0x1000); dev_dbg(info->device, "Board address: 0x%lx, register address: 0x%lx\n", board_addr, info->fix.mmio_start); board_size = (cinfo->btype == BT_GD5480) ? 32 * MB_ : cirrusfb_get_memsize(info, cinfo->regbase); ret = pci_request_regions(pdev, "cirrusfb"); if (ret < 0) { dev_err(info->device, "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")) { dev_err(info->device, "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; dev_info(info->device, "Cirrus Logic chipset on PCI bus, RAM (%lu kB) at 0x%lx\n", info->screen_size >> 10, board_addr); pci_set_drvdata(pdev, info); ret = cirrusfb_register(info); if (!ret) return 0; iounmap(info->screen_base); 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: if (cinfo->laguna_mmio != NULL) iounmap(cinfo->laguna_mmio); framebuffer_release(info); err_out: return ret; } static void cirrusfb_pci_unregister(struct pci_dev *pdev) { struct fb_info *info = pci_get_drvdata(pdev); cirrusfb_cleanup(info); } static struct pci_driver cirrusfb_pci_driver = { .name = "cirrusfb", .id_table = cirrusfb_pci_table, .probe = cirrusfb_pci_register, .remove = 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 fb_info *info; int error; const struct zorrocl *zcl; enum cirrus_board btype; unsigned long regbase, ramsize, rambase; struct cirrusfb_info *cinfo; info = framebuffer_alloc(sizeof(struct cirrusfb_info), &z->dev); if (!info) { printk(KERN_ERR "cirrusfb: could not allocate memory\n"); return -ENOMEM; } zcl = (const struct zorrocl *)ent->driver_data; btype = zcl->type; regbase = zorro_resource_start(z) + zcl->regoffset; ramsize = zcl->ramsize; if (ramsize) { rambase = zorro_resource_start(z) + zcl->ramoffset; if (zorro_resource_len(z) == 64 * MB_) { /* Quirk for 64 MiB Picasso IV */ rambase += zcl->ramoffset; } } else { struct zorro_dev *ram = zorro_find_device(zcl->ramid, NULL); if (!ram || !zorro_resource_len(ram)) { dev_err(info->device, "No video RAM found\n"); error = -ENODEV; goto err_release_fb; } rambase = zorro_resource_start(ram); ramsize = zorro_resource_len(ram); if (zcl->ramid2 && (ram = zorro_find_device(zcl->ramid2, NULL))) { if (zorro_resource_start(ram) != rambase + ramsize) { dev_warn(info->device, "Skipping non-contiguous RAM at %pR\n", &ram->resource); } else { ramsize += zorro_resource_len(ram); } } } dev_info(info->device, "%s board detected, REG at 0x%lx, %lu MiB RAM at 0x%lx\n", cirrusfb_board_info[btype].name, regbase, ramsize / MB_, rambase); if (!zorro_request_device(z, "cirrusfb")) { dev_err(info->device, "Cannot reserve %pR\n", &z->resource); error = -EBUSY; goto err_release_fb; } cinfo = info->par; cinfo->btype = btype; info->fix.mmio_start = regbase; cinfo->regbase = regbase > 16 * MB_ ? ioremap(regbase, 64 * 1024) : ZTWO_VADDR(regbase); if (!cinfo->regbase) { dev_err(info->device, "Cannot map registers\n"); error = -EIO; goto err_release_dev; } info->fix.smem_start = rambase; info->screen_size = ramsize; info->screen_base = rambase > 16 * MB_ ? ioremap(rambase, ramsize) : ZTWO_VADDR(rambase); if (!info->screen_base) { dev_err(info->device, "Cannot map video RAM\n"); error = -EIO; goto err_unmap_reg; } cinfo->unmap = cirrusfb_zorro_unmap; dev_info(info->device, "Cirrus Logic chipset on Zorro bus, RAM (%lu MiB) at 0x%lx\n", ramsize / MB_, rambase); /* MCLK select etc. */ if (cirrusfb_board_info[btype].init_sr1f) vga_wseq(cinfo->regbase, CL_SEQR1F, cirrusfb_board_info[btype].sr1f); error = cirrusfb_register(info); if (error) { dev_err(info->device, "Failed to register device, error %d\n", error); goto err_unmap_ram; } zorro_set_drvdata(z, info); return 0; err_unmap_ram: if (rambase > 16 * MB_) iounmap(info->screen_base); err_unmap_reg: if (regbase > 16 * MB_) iounmap(cinfo->regbase); err_release_dev: zorro_release_device(z); err_release_fb: framebuffer_release(info); return error; } void cirrusfb_zorro_unregister(struct zorro_dev *z) { struct fb_info *info = zorro_get_drvdata(z); cirrusfb_cleanup(info); zorro_set_drvdata(z, NULL); } static struct zorro_driver cirrusfb_zorro_driver = { .name = "cirrusfb", .id_table = cirrusfb_zorro_table, .probe = cirrusfb_zorro_register, .remove = cirrusfb_zorro_unregister, }; #endif /* CONFIG_ZORRO */ #ifndef MODULE static int __init cirrusfb_setup(char *options) { char *this_opt; if (!options || !*options) return 0; while ((this_opt = strsep(&options, ",")) != NULL) { if (!*this_opt) continue; if (!strcmp(this_opt, "noaccel")) noaccel = 1; else if (!strncmp(this_opt, "mode:", 5)) mode_option = this_opt + 5; else mode_option = this_opt; } 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 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; } 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); module_param(mode_option, charp, 0); MODULE_PARM_DESC(mode_option, "Initial video mode e.g. '648x480-8@60'"); module_param(noaccel, bool, 0); MODULE_PARM_DESC(noaccel, "Disable acceleration"); #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); 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); } /*** 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 (is_laguna(cinfo)) return; 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 || cinfo->btype == BT_SD64 || is_laguna(cinfo)) { /* 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) { while (vga_rgfx(regbase, CL_GR31) & 0x08) cpu_relax(); } /******************************************************************* cirrusfb_BitBLT() perform accelerated "scrolling" ********************************************************************/ static void cirrusfb_set_blitter(u8 __iomem *regbase, u_short nwidth, u_short nheight, u_long nsrc, u_long ndest, u_short bltmode, u_short line_length) { /* 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 */ } /******************************************************************* 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 = width - 1; u_short nheight = height - 1; u_long nsrc, ndest; u_char bltmode; 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; } /* standard case: forward blitting */ nsrc = (cury * line_length) + curx; ndest = (desty * line_length) + destx; if (bltmode) { /* this means start addresses are at the end, * counting backwards */ nsrc += nheight * line_length + nwidth; ndest += nheight * line_length + nwidth; } cirrusfb_WaitBLT(regbase); cirrusfb_set_blitter(regbase, nwidth, nheight, nsrc, ndest, bltmode, line_length); } /******************************************************************* 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, u32 fg_color, u32 bg_color, u_short line_length, u_char blitmode) { u_long ndest = (y * line_length) + x; u_char op; cirrusfb_WaitBLT(regbase); /* This is a ColorExpand Blt, using the */ /* same color for foreground and background */ vga_wgfx(regbase, VGA_GFX_SR_VALUE, bg_color); vga_wgfx(regbase, VGA_GFX_SR_ENABLE, fg_color); op = 0x80; if (bits_per_pixel >= 16) { vga_wgfx(regbase, CL_GR10, bg_color >> 8); vga_wgfx(regbase, CL_GR11, fg_color >> 8); op = 0x90; } if (bits_per_pixel >= 24) { vga_wgfx(regbase, CL_GR12, bg_color >> 16); vga_wgfx(regbase, CL_GR13, fg_color >> 16); op = 0xa0; } if (bits_per_pixel == 32) { vga_wgfx(regbase, CL_GR14, bg_color >> 24); vga_wgfx(regbase, CL_GR15, fg_color >> 24); op = 0xb0; } cirrusfb_set_blitter(regbase, width - 1, height - 1, 0, ndest, op | blitmode, line_length); } /************************************************************************** * bestclock() - determine closest possible clock lower(?) than the * desired pixel clock **************************************************************************/ static void bestclock(long freq, int *nom, int *den, int *div) { int n, d; long h, diff; assert(nom != NULL); assert(den != NULL); assert(div != NULL); *nom = 0; *den = 0; *div = 0; if (freq < 8000) freq = 8000; diff = freq; for (n = 32; n < 128; n++) { int s = 0; d = (14318 * n) / freq; if ((d >= 7) && (d <= 63)) { int temp = d; if (temp > 31) { s = 1; temp >>= 1; } h = ((14318 * n) / temp) >> s; h = h > freq ? h - freq : freq - h; if (h < diff) { diff = h; *nom = n; *den = temp; *div = s; } } d++; if ((d >= 7) && (d <= 63)) { if (d > 31) { s = 1; d >>= 1; } h = ((14318 * n) / d) >> s; h = h > freq ? h - freq : freq - h; if (h < diff) { diff = h; *nom = n; *den = d; *div = s; } } } } /* ------------------------------------------------------------------------- * * debugging functions * * ------------------------------------------------------------------------- */ #ifdef CIRRUSFB_DEBUG /** * 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(struct fb_info *info, 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; } dev_dbg(info->device, "%8s = 0x%02X\n", name, val); name = va_arg(list, char *); } va_end(list); } /** * 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(struct fb_info *info, caddr_t regbase) { dev_dbg(info->device, "VGA CRTC register dump:\n"); cirrusfb_dbg_print_regs(info, 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); dev_dbg(info->device, "\n"); dev_dbg(info->device, "VGA SEQ register dump:\n"); cirrusfb_dbg_print_regs(info, 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); dev_dbg(info->device, "\n"); } #endif /* CIRRUSFB_DEBUG */
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