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![Jon Smirl](/assets/img/avatar_default.png)
MAX_NR_CONSOLES, fg_console, want_console and last_console are more of a function of the VT layer than the TTY one. Moving these to vt.h and vt_kern.h allows all of the framebuffer and VT console drivers to remove their dependency on tty.h. [akpm@osdl.org: fix alpha build] Signed-off-by: Jon Smirl <jonsmir@gmail.com> Signed-off-by: Antonino Daplas <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
969 lines
27 KiB
C
969 lines
27 KiB
C
/* macfb.c: Generic framebuffer for Macs whose colourmaps/modes we
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don't know how to set */
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/* (c) 1999 David Huggins-Daines <dhd@debian.org>
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Primarily based on vesafb.c, by Gerd Knorr
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(c) 1998 Gerd Knorr <kraxel@cs.tu-berlin.de>
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Also uses information and code from:
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The original macfb.c from Linux/mac68k 2.0, by Alan Cox, Juergen
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Mellinger, Mikael Forselius, Michael Schmitz, and others.
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valkyriefb.c, by Martin Costabel, Kevin Schoedel, Barry Nathan, Dan
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Jacobowitz, Paul Mackerras, Fabio Riccardi, and Geert Uytterhoeven.
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This code is free software. You may copy, modify, and distribute
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it subject to the terms and conditions of the GNU General Public
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License, version 2, or any later version, at your convenience. */
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/sched.h>
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#include <linux/errno.h>
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#include <linux/string.h>
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#include <linux/mm.h>
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#include <linux/slab.h>
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#include <linux/delay.h>
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#include <linux/nubus.h>
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#include <linux/init.h>
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#include <linux/fb.h>
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#include <asm/setup.h>
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#include <asm/bootinfo.h>
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#include <asm/uaccess.h>
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#include <asm/pgtable.h>
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#include <asm/irq.h>
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#include <asm/macintosh.h>
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#include <asm/io.h>
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#include <asm/machw.h>
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/* Common DAC base address for the LC, RBV, Valkyrie, and IIvx */
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#define DAC_BASE 0x50f24000
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/* Some addresses for the DAFB */
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#define DAFB_BASE 0xf9800200
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/* Address for the built-in Civic framebuffer in Quadra AVs */
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#define CIVIC_BASE 0x50f30800 /* Only tested on 660AV! */
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/* GSC (Gray Scale Controller) base address */
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#define GSC_BASE 0x50F20000
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/* CSC (Color Screen Controller) base address */
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#define CSC_BASE 0x50F20000
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static int (*macfb_setpalette) (unsigned int regno, unsigned int red,
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unsigned int green, unsigned int blue,
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struct fb_info *info) = NULL;
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static int valkyrie_setpalette (unsigned int regno, unsigned int red,
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unsigned int green, unsigned int blue,
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struct fb_info *info);
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static int dafb_setpalette (unsigned int regno, unsigned int red,
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unsigned int green, unsigned int blue,
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struct fb_info *fb_info);
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static int rbv_setpalette (unsigned int regno, unsigned int red,
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unsigned int green, unsigned int blue,
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struct fb_info *fb_info);
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static int mdc_setpalette (unsigned int regno, unsigned int red,
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unsigned int green, unsigned int blue,
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struct fb_info *fb_info);
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static int toby_setpalette (unsigned int regno, unsigned int red,
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unsigned int green, unsigned int blue,
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struct fb_info *fb_info);
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static int civic_setpalette (unsigned int regno, unsigned int red,
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unsigned int green, unsigned int blue,
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struct fb_info *fb_info);
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static int csc_setpalette (unsigned int regno, unsigned int red,
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unsigned int green, unsigned int blue,
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struct fb_info *fb_info);
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static volatile struct {
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unsigned char addr;
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/* Note: word-aligned */
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char pad[3];
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unsigned char lut;
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} *valkyrie_cmap_regs;
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static volatile struct {
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unsigned char addr;
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unsigned char lut;
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} *v8_brazil_cmap_regs;
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static volatile struct {
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unsigned char addr;
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char pad1[3]; /* word aligned */
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unsigned char lut;
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char pad2[3]; /* word aligned */
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unsigned char cntl; /* a guess as to purpose */
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} *rbv_cmap_regs;
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static volatile struct {
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unsigned long reset;
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unsigned long pad1[3];
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unsigned char pad2[3];
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unsigned char lut;
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} *dafb_cmap_regs;
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static volatile struct {
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unsigned char addr; /* OFFSET: 0x00 */
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unsigned char pad1[15];
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unsigned char lut; /* OFFSET: 0x10 */
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unsigned char pad2[15];
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unsigned char status; /* OFFSET: 0x20 */
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unsigned char pad3[7];
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unsigned long vbl_addr; /* OFFSET: 0x28 */
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unsigned int status2; /* OFFSET: 0x2C */
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} *civic_cmap_regs;
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static volatile struct {
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char pad1[0x40];
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unsigned char clut_waddr; /* 0x40 */
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char pad2;
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unsigned char clut_data; /* 0x42 */
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char pad3[0x3];
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unsigned char clut_raddr; /* 0x46 */
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} *csc_cmap_regs;
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/* We will leave these the way they are for the time being */
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struct mdc_cmap_regs {
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char pad1[0x200200];
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unsigned char addr;
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char pad2[6];
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unsigned char lut;
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};
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struct toby_cmap_regs {
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char pad1[0x90018];
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unsigned char lut; /* TFBClutWDataReg, offset 0x90018 */
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char pad2[3];
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unsigned char addr; /* TFBClutAddrReg, offset 0x9001C */
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};
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struct jet_cmap_regs {
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char pad1[0xe0e000];
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unsigned char addr;
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unsigned char lut;
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};
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#define PIXEL_TO_MM(a) (((a)*10)/28) /* width in mm at 72 dpi */
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/* mode */
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static int video_slot = 0;
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static struct fb_var_screeninfo macfb_defined = {
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.bits_per_pixel = 8,
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.activate = FB_ACTIVATE_NOW,
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.width = -1,
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.height = -1,
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.right_margin = 32,
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.upper_margin = 16,
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.lower_margin = 4,
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.vsync_len = 4,
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.vmode = FB_VMODE_NONINTERLACED,
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};
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static struct fb_fix_screeninfo macfb_fix = {
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.id = "Macintosh ",
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.type = FB_TYPE_PACKED_PIXELS,
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.accel = FB_ACCEL_NONE,
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};
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static struct fb_info fb_info;
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static u32 pseudo_palette[17];
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static int inverse = 0;
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static int vidtest = 0;
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static int valkyrie_setpalette (unsigned int regno, unsigned int red,
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unsigned int green, unsigned int blue,
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struct fb_info *info)
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{
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unsigned long flags;
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red >>= 8;
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green >>= 8;
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blue >>= 8;
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local_irq_save(flags);
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/* tell clut which address to fill */
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nubus_writeb(regno, &valkyrie_cmap_regs->addr);
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nop();
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/* send one color channel at a time */
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nubus_writeb(red, &valkyrie_cmap_regs->lut);
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nop();
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nubus_writeb(green, &valkyrie_cmap_regs->lut);
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nop();
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nubus_writeb(blue, &valkyrie_cmap_regs->lut);
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local_irq_restore(flags);
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return 0;
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}
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/* Unlike the Valkyrie, the DAFB cannot set individual colormap
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registers. Therefore, we do what the MacOS driver does (no
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kidding!) and simply set them one by one until we hit the one we
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want. */
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static int dafb_setpalette (unsigned int regno, unsigned int red,
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unsigned int green, unsigned int blue,
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struct fb_info *info)
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{
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/* FIXME: really, really need to use ioremap() here,
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phys_to_virt() doesn't work anymore */
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static int lastreg = -1;
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unsigned long flags;
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red >>= 8;
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green >>= 8;
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blue >>= 8;
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local_irq_save(flags);
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/* fbdev will set an entire colourmap, but X won't. Hopefully
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this should accommodate both of them */
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if (regno != lastreg+1) {
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int i;
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/* Stab in the dark trying to reset the CLUT pointer */
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nubus_writel(0, &dafb_cmap_regs->reset);
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nop();
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/* Loop until we get to the register we want */
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for (i = 0; i < regno; i++) {
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nubus_writeb(info->cmap.red[i] >> 8, &dafb_cmap_regs->lut);
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nop();
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nubus_writeb(info->cmap.green[i] >> 8, &dafb_cmap_regs->lut);
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nop();
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nubus_writeb(info->cmap.blue[i] >> 8, &dafb_cmap_regs->lut);
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nop();
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}
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}
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nubus_writeb(red, &dafb_cmap_regs->lut);
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nop();
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nubus_writeb(green, &dafb_cmap_regs->lut);
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nop();
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nubus_writeb(blue, &dafb_cmap_regs->lut);
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local_irq_restore(flags);
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lastreg = regno;
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return 0;
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}
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/* V8 and Brazil seem to use the same DAC. Sonora does as well. */
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static int v8_brazil_setpalette (unsigned int regno, unsigned int red,
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unsigned int green, unsigned int blue,
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struct fb_info *info)
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{
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unsigned int bpp = info->var.bits_per_pixel;
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unsigned char _red =red>>8;
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unsigned char _green=green>>8;
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unsigned char _blue =blue>>8;
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unsigned char _regno;
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unsigned long flags;
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if (bpp > 8) return 1; /* failsafe */
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local_irq_save(flags);
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/* On these chips, the CLUT register numbers are spread out
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across the register space. Thus:
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In 8bpp, all regnos are valid.
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In 4bpp, the regnos are 0x0f, 0x1f, 0x2f, etc, etc
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In 2bpp, the regnos are 0x3f, 0x7f, 0xbf, 0xff */
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_regno = (regno << (8 - bpp)) | (0xFF >> bpp);
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nubus_writeb(_regno, &v8_brazil_cmap_regs->addr); nop();
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/* send one color channel at a time */
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nubus_writeb(_red, &v8_brazil_cmap_regs->lut); nop();
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nubus_writeb(_green, &v8_brazil_cmap_regs->lut); nop();
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nubus_writeb(_blue, &v8_brazil_cmap_regs->lut);
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local_irq_restore(flags);
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return 0;
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}
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static int rbv_setpalette (unsigned int regno, unsigned int red,
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unsigned int green, unsigned int blue,
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struct fb_info *info)
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{
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/* use MSBs */
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unsigned char _red =red>>8;
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unsigned char _green=green>>8;
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unsigned char _blue =blue>>8;
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unsigned char _regno;
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unsigned long flags;
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if (info->var.bits_per_pixel > 8) return 1; /* failsafe */
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local_irq_save(flags);
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/* From the VideoToolbox driver. Seems to be saying that
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* regno #254 and #255 are the important ones for 1-bit color,
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* regno #252-255 are the important ones for 2-bit color, etc.
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*/
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_regno = regno + (256-(1 << info->var.bits_per_pixel));
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/* reset clut? (VideoToolbox sez "not necessary") */
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nubus_writeb(0xFF, &rbv_cmap_regs->cntl); nop();
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/* tell clut which address to use. */
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nubus_writeb(_regno, &rbv_cmap_regs->addr); nop();
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/* send one color channel at a time. */
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nubus_writeb(_red, &rbv_cmap_regs->lut); nop();
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nubus_writeb(_green, &rbv_cmap_regs->lut); nop();
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nubus_writeb(_blue, &rbv_cmap_regs->lut);
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local_irq_restore(flags); /* done. */
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return 0;
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}
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/* Macintosh Display Card (8x24) */
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static int mdc_setpalette(unsigned int regno, unsigned int red,
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unsigned int green, unsigned int blue,
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struct fb_info *info)
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{
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volatile struct mdc_cmap_regs *cmap_regs =
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nubus_slot_addr(video_slot);
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/* use MSBs */
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unsigned char _red =red>>8;
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unsigned char _green=green>>8;
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unsigned char _blue =blue>>8;
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unsigned char _regno=regno;
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unsigned long flags;
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local_irq_save(flags);
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/* the nop's are there to order writes. */
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nubus_writeb(_regno, &cmap_regs->addr); nop();
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nubus_writeb(_red, &cmap_regs->lut); nop();
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nubus_writeb(_green, &cmap_regs->lut); nop();
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nubus_writeb(_blue, &cmap_regs->lut);
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local_irq_restore(flags);
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return 0;
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}
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/* Toby frame buffer */
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static int toby_setpalette(unsigned int regno, unsigned int red,
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unsigned int green, unsigned int blue,
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struct fb_info *info)
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{
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volatile struct toby_cmap_regs *cmap_regs =
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nubus_slot_addr(video_slot);
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unsigned int bpp = info->var.bits_per_pixel;
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/* use MSBs */
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unsigned char _red =~(red>>8);
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unsigned char _green=~(green>>8);
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unsigned char _blue =~(blue>>8);
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unsigned char _regno = (regno << (8 - bpp)) | (0xFF >> bpp);
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unsigned long flags;
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local_irq_save(flags);
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nubus_writeb(_regno, &cmap_regs->addr); nop();
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nubus_writeb(_red, &cmap_regs->lut); nop();
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nubus_writeb(_green, &cmap_regs->lut); nop();
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nubus_writeb(_blue, &cmap_regs->lut);
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local_irq_restore(flags);
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return 0;
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}
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/* Jet frame buffer */
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static int jet_setpalette(unsigned int regno, unsigned int red,
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unsigned int green, unsigned int blue,
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struct fb_info *info)
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{
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volatile struct jet_cmap_regs *cmap_regs =
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nubus_slot_addr(video_slot);
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/* use MSBs */
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unsigned char _red = (red>>8);
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unsigned char _green = (green>>8);
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unsigned char _blue = (blue>>8);
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unsigned long flags;
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local_irq_save(flags);
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nubus_writeb(regno, &cmap_regs->addr); nop();
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nubus_writeb(_red, &cmap_regs->lut); nop();
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nubus_writeb(_green, &cmap_regs->lut); nop();
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nubus_writeb(_blue, &cmap_regs->lut);
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local_irq_restore(flags);
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return 0;
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}
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/*
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* Civic framebuffer -- Quadra AV built-in video. A chip
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* called Sebastian holds the actual color palettes, and
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* apparently, there are two different banks of 512K RAM
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* which can act as separate framebuffers for doing video
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* input and viewing the screen at the same time! The 840AV
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* Can add another 1MB RAM to give the two framebuffers
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* 1MB RAM apiece.
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*
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* FIXME: this doesn't seem to work anymore.
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*/
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static int civic_setpalette (unsigned int regno, unsigned int red,
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unsigned int green, unsigned int blue,
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struct fb_info *info)
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{
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static int lastreg = -1;
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unsigned long flags;
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int clut_status;
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if (info->var.bits_per_pixel > 8) return 1; /* failsafe */
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red >>= 8;
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green >>= 8;
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blue >>= 8;
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local_irq_save(flags);
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/*
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* Set the register address
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*/
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nubus_writeb(regno, &civic_cmap_regs->addr); nop();
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/*
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* Wait for VBL interrupt here;
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* They're usually not enabled from Penguin, so we won't check
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*/
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#if 0
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{
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#define CIVIC_VBL_OFFSET 0x120
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volatile unsigned long *vbl = nubus_readl(civic_cmap_regs->vbl_addr + CIVIC_VBL_OFFSET);
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/* do interrupt setup stuff here? */
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*vbl = 0L; nop(); /* clear */
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*vbl = 1L; nop(); /* set */
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while (*vbl != 0L) /* wait for next vbl */
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{
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usleep(10); /* needed? */
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}
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/* do interrupt shutdown stuff here? */
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}
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#endif
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/*
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* Grab a status word and do some checking;
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* Then finally write the clut!
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*/
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clut_status = nubus_readb(&civic_cmap_regs->status2);
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if ((clut_status & 0x0008) == 0)
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{
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#if 0
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if ((clut_status & 0x000D) != 0)
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{
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nubus_writeb(0x00, &civic_cmap_regs->lut); nop();
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nubus_writeb(0x00, &civic_cmap_regs->lut); nop();
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}
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#endif
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nubus_writeb( red, &civic_cmap_regs->lut); nop();
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nubus_writeb(green, &civic_cmap_regs->lut); nop();
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nubus_writeb( blue, &civic_cmap_regs->lut); nop();
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nubus_writeb( 0x00, &civic_cmap_regs->lut); nop();
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}
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else
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{
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unsigned char junk;
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junk = nubus_readb(&civic_cmap_regs->lut); nop();
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junk = nubus_readb(&civic_cmap_regs->lut); nop();
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junk = nubus_readb(&civic_cmap_regs->lut); nop();
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junk = nubus_readb(&civic_cmap_regs->lut); nop();
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if ((clut_status & 0x000D) != 0)
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{
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nubus_writeb(0x00, &civic_cmap_regs->lut); nop();
|
|
nubus_writeb(0x00, &civic_cmap_regs->lut); nop();
|
|
}
|
|
|
|
nubus_writeb( red, &civic_cmap_regs->lut); nop();
|
|
nubus_writeb(green, &civic_cmap_regs->lut); nop();
|
|
nubus_writeb( blue, &civic_cmap_regs->lut); nop();
|
|
nubus_writeb( junk, &civic_cmap_regs->lut); nop();
|
|
}
|
|
|
|
local_irq_restore(flags);
|
|
lastreg = regno;
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* The CSC is the framebuffer on the PowerBook 190 series
|
|
* (and the 5300 too, but that's a PowerMac). This function
|
|
* brought to you in part by the ECSC driver for MkLinux.
|
|
*/
|
|
|
|
static int csc_setpalette (unsigned int regno, unsigned int red,
|
|
unsigned int green, unsigned int blue,
|
|
struct fb_info *info)
|
|
{
|
|
mdelay(1);
|
|
csc_cmap_regs->clut_waddr = regno;
|
|
csc_cmap_regs->clut_data = red;
|
|
csc_cmap_regs->clut_data = green;
|
|
csc_cmap_regs->clut_data = blue;
|
|
return 0;
|
|
}
|
|
|
|
static int macfb_setcolreg(unsigned regno, unsigned red, unsigned green,
|
|
unsigned blue, unsigned transp,
|
|
struct fb_info *fb_info)
|
|
{
|
|
/*
|
|
* Set a single color register. The values supplied are
|
|
* already rounded down to the hardware's capabilities
|
|
* (according to the entries in the `var' structure). Return
|
|
* != 0 for invalid regno.
|
|
*/
|
|
|
|
if (regno >= fb_info->cmap.len)
|
|
return 1;
|
|
|
|
switch (fb_info->var.bits_per_pixel) {
|
|
case 1:
|
|
/* We shouldn't get here */
|
|
break;
|
|
case 2:
|
|
case 4:
|
|
case 8:
|
|
if (macfb_setpalette)
|
|
macfb_setpalette(regno, red, green, blue, fb_info);
|
|
else
|
|
return 1;
|
|
break;
|
|
case 16:
|
|
if (fb_info->var.red.offset == 10) {
|
|
/* 1:5:5:5 */
|
|
((u32*) (fb_info->pseudo_palette))[regno] =
|
|
((red & 0xf800) >> 1) |
|
|
((green & 0xf800) >> 6) |
|
|
((blue & 0xf800) >> 11) |
|
|
((transp != 0) << 15);
|
|
} else {
|
|
/* 0:5:6:5 */
|
|
((u32*) (fb_info->pseudo_palette))[regno] =
|
|
((red & 0xf800) ) |
|
|
((green & 0xfc00) >> 5) |
|
|
((blue & 0xf800) >> 11);
|
|
}
|
|
break;
|
|
/* I'm pretty sure that one or the other of these
|
|
doesn't exist on 68k Macs */
|
|
case 24:
|
|
red >>= 8;
|
|
green >>= 8;
|
|
blue >>= 8;
|
|
((u32 *)(fb_info->pseudo_palette))[regno] =
|
|
(red << fb_info->var.red.offset) |
|
|
(green << fb_info->var.green.offset) |
|
|
(blue << fb_info->var.blue.offset);
|
|
break;
|
|
case 32:
|
|
red >>= 8;
|
|
green >>= 8;
|
|
blue >>= 8;
|
|
((u32 *)(fb_info->pseudo_palette))[regno] =
|
|
(red << fb_info->var.red.offset) |
|
|
(green << fb_info->var.green.offset) |
|
|
(blue << fb_info->var.blue.offset);
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static struct fb_ops macfb_ops = {
|
|
.owner = THIS_MODULE,
|
|
.fb_setcolreg = macfb_setcolreg,
|
|
.fb_fillrect = cfb_fillrect,
|
|
.fb_copyarea = cfb_copyarea,
|
|
.fb_imageblit = cfb_imageblit,
|
|
};
|
|
|
|
void __init macfb_setup(char *options)
|
|
{
|
|
char *this_opt;
|
|
|
|
if (!options || !*options)
|
|
return;
|
|
|
|
while ((this_opt = strsep(&options, ",")) != NULL) {
|
|
if (!*this_opt) continue;
|
|
|
|
if (! strcmp(this_opt, "inverse"))
|
|
inverse=1;
|
|
/* This means "turn on experimental CLUT code" */
|
|
else if (!strcmp(this_opt, "vidtest"))
|
|
vidtest=1;
|
|
}
|
|
}
|
|
|
|
static int __init macfb_init(void)
|
|
{
|
|
int video_cmap_len, video_is_nubus = 0;
|
|
struct nubus_dev* ndev = NULL;
|
|
char *option = NULL;
|
|
int err;
|
|
|
|
if (fb_get_options("macfb", &option))
|
|
return -ENODEV;
|
|
macfb_setup(option);
|
|
|
|
if (!MACH_IS_MAC)
|
|
return -ENODEV;
|
|
|
|
/* There can only be one internal video controller anyway so
|
|
we're not too worried about this */
|
|
macfb_defined.xres = mac_bi_data.dimensions & 0xFFFF;
|
|
macfb_defined.yres = mac_bi_data.dimensions >> 16;
|
|
macfb_defined.bits_per_pixel = mac_bi_data.videodepth;
|
|
macfb_fix.line_length = mac_bi_data.videorow;
|
|
macfb_fix.smem_len = macfb_fix.line_length * macfb_defined.yres;
|
|
/* Note: physical address (since 2.1.127) */
|
|
macfb_fix.smem_start = mac_bi_data.videoaddr;
|
|
/* This is actually redundant with the initial mappings.
|
|
However, there are some non-obvious aspects to the way
|
|
those mappings are set up, so this is in fact the safest
|
|
way to ensure that this driver will work on every possible
|
|
Mac */
|
|
fb_info.screen_base = ioremap(mac_bi_data.videoaddr, macfb_fix.smem_len);
|
|
|
|
printk("macfb: framebuffer at 0x%08lx, mapped to 0x%p, size %dk\n",
|
|
macfb_fix.smem_start, fb_info.screen_base, macfb_fix.smem_len/1024);
|
|
printk("macfb: mode is %dx%dx%d, linelength=%d\n",
|
|
macfb_defined.xres, macfb_defined.yres, macfb_defined.bits_per_pixel, macfb_fix.line_length);
|
|
|
|
/*
|
|
* Fill in the available video resolution
|
|
*/
|
|
|
|
macfb_defined.xres_virtual = macfb_defined.xres;
|
|
macfb_defined.yres_virtual = macfb_defined.yres;
|
|
macfb_defined.height = PIXEL_TO_MM(macfb_defined.yres);
|
|
macfb_defined.width = PIXEL_TO_MM(macfb_defined.xres);
|
|
|
|
printk("macfb: scrolling: redraw\n");
|
|
macfb_defined.yres_virtual = macfb_defined.yres;
|
|
|
|
/* some dummy values for timing to make fbset happy */
|
|
macfb_defined.pixclock = 10000000 / macfb_defined.xres * 1000 / macfb_defined.yres;
|
|
macfb_defined.left_margin = (macfb_defined.xres / 8) & 0xf8;
|
|
macfb_defined.hsync_len = (macfb_defined.xres / 8) & 0xf8;
|
|
|
|
switch (macfb_defined.bits_per_pixel) {
|
|
case 1:
|
|
/* XXX: I think this will catch any program that tries
|
|
to do FBIO_PUTCMAP when the visual is monochrome */
|
|
macfb_defined.red.length = macfb_defined.bits_per_pixel;
|
|
macfb_defined.green.length = macfb_defined.bits_per_pixel;
|
|
macfb_defined.blue.length = macfb_defined.bits_per_pixel;
|
|
video_cmap_len = 0;
|
|
macfb_fix.visual = FB_VISUAL_MONO01;
|
|
break;
|
|
case 2:
|
|
case 4:
|
|
case 8:
|
|
macfb_defined.red.length = macfb_defined.bits_per_pixel;
|
|
macfb_defined.green.length = macfb_defined.bits_per_pixel;
|
|
macfb_defined.blue.length = macfb_defined.bits_per_pixel;
|
|
video_cmap_len = 1 << macfb_defined.bits_per_pixel;
|
|
macfb_fix.visual = FB_VISUAL_PSEUDOCOLOR;
|
|
break;
|
|
case 16:
|
|
macfb_defined.transp.offset = 15;
|
|
macfb_defined.transp.length = 1;
|
|
macfb_defined.red.offset = 10;
|
|
macfb_defined.red.length = 5;
|
|
macfb_defined.green.offset = 5;
|
|
macfb_defined.green.length = 5;
|
|
macfb_defined.blue.offset = 0;
|
|
macfb_defined.blue.length = 5;
|
|
printk("macfb: directcolor: "
|
|
"size=1:5:5:5, shift=15:10:5:0\n");
|
|
video_cmap_len = 16;
|
|
/* Should actually be FB_VISUAL_DIRECTCOLOR, but this
|
|
works too */
|
|
macfb_fix.visual = FB_VISUAL_TRUECOLOR;
|
|
break;
|
|
case 24:
|
|
case 32:
|
|
/* XXX: have to test these... can any 68k Macs
|
|
actually do this on internal video? */
|
|
macfb_defined.red.offset = 16;
|
|
macfb_defined.red.length = 8;
|
|
macfb_defined.green.offset = 8;
|
|
macfb_defined.green.length = 8;
|
|
macfb_defined.blue.offset = 0;
|
|
macfb_defined.blue.length = 8;
|
|
printk("macfb: truecolor: "
|
|
"size=0:8:8:8, shift=0:16:8:0\n");
|
|
video_cmap_len = 16;
|
|
macfb_fix.visual = FB_VISUAL_TRUECOLOR;
|
|
default:
|
|
video_cmap_len = 0;
|
|
macfb_fix.visual = FB_VISUAL_MONO01;
|
|
printk("macfb: unknown or unsupported bit depth: %d\n", macfb_defined.bits_per_pixel);
|
|
break;
|
|
}
|
|
|
|
/* Hardware dependent stuff */
|
|
/* We take a wild guess that if the video physical address is
|
|
* in nubus slot space, that the nubus card is driving video.
|
|
* Penguin really ought to tell us whether we are using internal
|
|
* video or not.
|
|
*/
|
|
/* Hopefully we only find one of them. Otherwise our NuBus
|
|
code is really broken :-) */
|
|
|
|
while ((ndev = nubus_find_type(NUBUS_CAT_DISPLAY, NUBUS_TYPE_VIDEO, ndev))
|
|
!= NULL)
|
|
{
|
|
if (!(mac_bi_data.videoaddr >= ndev->board->slot_addr
|
|
&& (mac_bi_data.videoaddr <
|
|
(unsigned long)nubus_slot_addr(ndev->board->slot+1))))
|
|
continue;
|
|
video_is_nubus = 1;
|
|
/* We should probably just use the slot address... */
|
|
video_slot = ndev->board->slot;
|
|
|
|
switch(ndev->dr_hw) {
|
|
case NUBUS_DRHW_APPLE_MDC:
|
|
strcat( macfb_fix.id, "Display Card" );
|
|
macfb_setpalette = mdc_setpalette;
|
|
macfb_defined.activate = FB_ACTIVATE_NOW;
|
|
break;
|
|
case NUBUS_DRHW_APPLE_TFB:
|
|
strcat( macfb_fix.id, "Toby" );
|
|
macfb_setpalette = toby_setpalette;
|
|
macfb_defined.activate = FB_ACTIVATE_NOW;
|
|
break;
|
|
case NUBUS_DRHW_APPLE_JET:
|
|
strcat( macfb_fix.id, "Jet");
|
|
macfb_setpalette = jet_setpalette;
|
|
macfb_defined.activate = FB_ACTIVATE_NOW;
|
|
break;
|
|
default:
|
|
strcat( macfb_fix.id, "Generic NuBus" );
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* If it's not a NuBus card, it must be internal video */
|
|
/* FIXME: this function is getting way too big. (this driver
|
|
is too...) */
|
|
if (!video_is_nubus)
|
|
switch( mac_bi_data.id )
|
|
{
|
|
/* These don't have onboard video. Eventually, we may
|
|
be able to write separate framebuffer drivers for
|
|
them (tobyfb.c, hiresfb.c, etc, etc) */
|
|
case MAC_MODEL_II:
|
|
case MAC_MODEL_IIX:
|
|
case MAC_MODEL_IICX:
|
|
case MAC_MODEL_IIFX:
|
|
strcat( macfb_fix.id, "Generic NuBus" );
|
|
break;
|
|
|
|
/* Valkyrie Quadras */
|
|
case MAC_MODEL_Q630:
|
|
/* I'm not sure about this one */
|
|
case MAC_MODEL_P588:
|
|
strcat( macfb_fix.id, "Valkyrie built-in" );
|
|
macfb_setpalette = valkyrie_setpalette;
|
|
macfb_defined.activate = FB_ACTIVATE_NOW;
|
|
valkyrie_cmap_regs = ioremap(DAC_BASE, 0x1000);
|
|
break;
|
|
|
|
/* DAFB Quadras */
|
|
/* Note: these first four have the v7 DAFB, which is
|
|
known to be rather unlike the ones used in the
|
|
other models */
|
|
case MAC_MODEL_P475:
|
|
case MAC_MODEL_P475F:
|
|
case MAC_MODEL_P575:
|
|
case MAC_MODEL_Q605:
|
|
|
|
case MAC_MODEL_Q800:
|
|
case MAC_MODEL_Q650:
|
|
case MAC_MODEL_Q610:
|
|
case MAC_MODEL_C650:
|
|
case MAC_MODEL_C610:
|
|
case MAC_MODEL_Q700:
|
|
case MAC_MODEL_Q900:
|
|
case MAC_MODEL_Q950:
|
|
strcat( macfb_fix.id, "DAFB built-in" );
|
|
macfb_setpalette = dafb_setpalette;
|
|
macfb_defined.activate = FB_ACTIVATE_NOW;
|
|
dafb_cmap_regs = ioremap(DAFB_BASE, 0x1000);
|
|
break;
|
|
|
|
/* LC II uses the V8 framebuffer */
|
|
case MAC_MODEL_LCII:
|
|
strcat( macfb_fix.id, "V8 built-in" );
|
|
macfb_setpalette = v8_brazil_setpalette;
|
|
macfb_defined.activate = FB_ACTIVATE_NOW;
|
|
v8_brazil_cmap_regs = ioremap(DAC_BASE, 0x1000);
|
|
break;
|
|
|
|
/* IIvi, IIvx use the "Brazil" framebuffer (which is
|
|
very much like the V8, it seems, and probably uses
|
|
the same DAC) */
|
|
case MAC_MODEL_IIVI:
|
|
case MAC_MODEL_IIVX:
|
|
case MAC_MODEL_P600:
|
|
strcat( macfb_fix.id, "Brazil built-in" );
|
|
macfb_setpalette = v8_brazil_setpalette;
|
|
macfb_defined.activate = FB_ACTIVATE_NOW;
|
|
v8_brazil_cmap_regs = ioremap(DAC_BASE, 0x1000);
|
|
break;
|
|
|
|
/* LC III (and friends) use the Sonora framebuffer */
|
|
/* Incidentally this is also used in the non-AV models
|
|
of the x100 PowerMacs */
|
|
/* These do in fact seem to use the same DAC interface
|
|
as the LC II. */
|
|
case MAC_MODEL_LCIII:
|
|
case MAC_MODEL_P520:
|
|
case MAC_MODEL_P550:
|
|
case MAC_MODEL_P460:
|
|
macfb_setpalette = v8_brazil_setpalette;
|
|
macfb_defined.activate = FB_ACTIVATE_NOW;
|
|
strcat( macfb_fix.id, "Sonora built-in" );
|
|
v8_brazil_cmap_regs = ioremap(DAC_BASE, 0x1000);
|
|
break;
|
|
|
|
/* IIci and IIsi use the infamous RBV chip
|
|
(the IIsi is just a rebadged and crippled
|
|
IIci in a different case, BTW) */
|
|
case MAC_MODEL_IICI:
|
|
case MAC_MODEL_IISI:
|
|
macfb_setpalette = rbv_setpalette;
|
|
macfb_defined.activate = FB_ACTIVATE_NOW;
|
|
strcat( macfb_fix.id, "RBV built-in" );
|
|
rbv_cmap_regs = ioremap(DAC_BASE, 0x1000);
|
|
break;
|
|
|
|
/* AVs use the Civic framebuffer */
|
|
case MAC_MODEL_Q840:
|
|
case MAC_MODEL_C660:
|
|
macfb_setpalette = civic_setpalette;
|
|
macfb_defined.activate = FB_ACTIVATE_NOW;
|
|
strcat( macfb_fix.id, "Civic built-in" );
|
|
civic_cmap_regs = ioremap(CIVIC_BASE, 0x1000);
|
|
break;
|
|
|
|
|
|
/* Write a setpalette function for your machine, then
|
|
you can add something similar here. These are
|
|
grouped by classes of video chipsets. Some of this
|
|
information is from the VideoToolbox "Bugs" web
|
|
page at
|
|
http://rajsky.psych.nyu.edu/Tips/VideoBugs.html */
|
|
|
|
/* Assorted weirdos */
|
|
/* We think this may be like the LC II */
|
|
case MAC_MODEL_LC:
|
|
if (vidtest) {
|
|
macfb_setpalette = v8_brazil_setpalette;
|
|
macfb_defined.activate = FB_ACTIVATE_NOW;
|
|
v8_brazil_cmap_regs =
|
|
ioremap(DAC_BASE, 0x1000);
|
|
}
|
|
strcat( macfb_fix.id, "LC built-in" );
|
|
break;
|
|
/* We think this may be like the LC II */
|
|
case MAC_MODEL_CCL:
|
|
if (vidtest) {
|
|
macfb_setpalette = v8_brazil_setpalette;
|
|
macfb_defined.activate = FB_ACTIVATE_NOW;
|
|
v8_brazil_cmap_regs =
|
|
ioremap(DAC_BASE, 0x1000);
|
|
}
|
|
strcat( macfb_fix.id, "Color Classic built-in" );
|
|
break;
|
|
|
|
/* And we *do* mean "weirdos" */
|
|
case MAC_MODEL_TV:
|
|
strcat( macfb_fix.id, "Mac TV built-in" );
|
|
break;
|
|
|
|
/* These don't have colour, so no need to worry */
|
|
case MAC_MODEL_SE30:
|
|
case MAC_MODEL_CLII:
|
|
strcat( macfb_fix.id, "Monochrome built-in" );
|
|
break;
|
|
|
|
/* Powerbooks are particularly difficult. Many of
|
|
them have separate framebuffers for external and
|
|
internal video, which is admittedly pretty cool,
|
|
but will be a bit of a headache to support here.
|
|
Also, many of them are grayscale, and we don't
|
|
really support that. */
|
|
|
|
case MAC_MODEL_PB140:
|
|
case MAC_MODEL_PB145:
|
|
case MAC_MODEL_PB170:
|
|
strcat( macfb_fix.id, "DDC built-in" );
|
|
break;
|
|
|
|
/* Internal is GSC, External (if present) is ViSC */
|
|
case MAC_MODEL_PB150: /* no external video */
|
|
case MAC_MODEL_PB160:
|
|
case MAC_MODEL_PB165:
|
|
case MAC_MODEL_PB180:
|
|
case MAC_MODEL_PB210:
|
|
case MAC_MODEL_PB230:
|
|
strcat( macfb_fix.id, "GSC built-in" );
|
|
break;
|
|
|
|
/* Internal is TIM, External is ViSC */
|
|
case MAC_MODEL_PB165C:
|
|
case MAC_MODEL_PB180C:
|
|
strcat( macfb_fix.id, "TIM built-in" );
|
|
break;
|
|
|
|
/* Internal is CSC, External is Keystone+Ariel. */
|
|
case MAC_MODEL_PB190: /* external video is optional */
|
|
case MAC_MODEL_PB520:
|
|
case MAC_MODEL_PB250:
|
|
case MAC_MODEL_PB270C:
|
|
case MAC_MODEL_PB280:
|
|
case MAC_MODEL_PB280C:
|
|
macfb_setpalette = csc_setpalette;
|
|
macfb_defined.activate = FB_ACTIVATE_NOW;
|
|
strcat( macfb_fix.id, "CSC built-in" );
|
|
csc_cmap_regs = ioremap(CSC_BASE, 0x1000);
|
|
break;
|
|
|
|
default:
|
|
strcat( macfb_fix.id, "Unknown/Unsupported built-in" );
|
|
break;
|
|
}
|
|
|
|
fb_info.fbops = &macfb_ops;
|
|
fb_info.var = macfb_defined;
|
|
fb_info.fix = macfb_fix;
|
|
fb_info.pseudo_palette = pseudo_palette;
|
|
fb_info.flags = FBINFO_DEFAULT;
|
|
|
|
fb_alloc_cmap(&fb_info.cmap, video_cmap_len, 0);
|
|
|
|
err = register_framebuffer(&fb_info);
|
|
if (!err)
|
|
printk("fb%d: %s frame buffer device\n",
|
|
fb_info.node, fb_info.fix.id);
|
|
return err;
|
|
}
|
|
|
|
module_init(macfb_init);
|
|
MODULE_LICENSE("GPL");
|