Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/drivers/video/macfb.c b/drivers/video/macfb.c
new file mode 100644
index 0000000..4945a4c
--- /dev/null
+++ b/drivers/video/macfb.c
@@ -0,0 +1,970 @@
+/* macfb.c: Generic framebuffer for Macs whose colourmaps/modes we
+ don't know how to set */
+
+/* (c) 1999 David Huggins-Daines <dhd@debian.org>
+
+ Primarily based on vesafb.c, by Gerd Knorr
+ (c) 1998 Gerd Knorr <kraxel@cs.tu-berlin.de>
+
+ Also uses information and code from:
+
+ The original macfb.c from Linux/mac68k 2.0, by Alan Cox, Juergen
+ Mellinger, Mikael Forselius, Michael Schmitz, and others.
+
+ valkyriefb.c, by Martin Costabel, Kevin Schoedel, Barry Nathan, Dan
+ Jacobowitz, Paul Mackerras, Fabio Riccardi, and Geert Uytterhoeven.
+
+ This code is free software. You may copy, modify, and distribute
+ it subject to the terms and conditions of the GNU General Public
+ License, version 2, or any later version, at your convenience. */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/tty.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include <linux/nubus.h>
+#include <linux/init.h>
+#include <linux/fb.h>
+
+#include <asm/setup.h>
+#include <asm/bootinfo.h>
+#include <asm/uaccess.h>
+#include <asm/pgtable.h>
+#include <asm/irq.h>
+#include <asm/macintosh.h>
+#include <asm/io.h>
+#include <asm/machw.h>
+
+/* Common DAC base address for the LC, RBV, Valkyrie, and IIvx */
+#define DAC_BASE 0x50f24000
+
+/* Some addresses for the DAFB */
+#define DAFB_BASE 0xf9800200
+
+/* Address for the built-in Civic framebuffer in Quadra AVs */
+#define CIVIC_BASE 0x50f30800 /* Only tested on 660AV! */
+
+/* GSC (Gray Scale Controller) base address */
+#define GSC_BASE 0x50F20000
+
+/* CSC (Color Screen Controller) base address */
+#define CSC_BASE 0x50F20000
+
+static int (*macfb_setpalette) (unsigned int regno, unsigned int red,
+ unsigned int green, unsigned int blue,
+ struct fb_info *info) = NULL;
+static int valkyrie_setpalette (unsigned int regno, unsigned int red,
+ unsigned int green, unsigned int blue,
+ struct fb_info *info);
+static int dafb_setpalette (unsigned int regno, unsigned int red,
+ unsigned int green, unsigned int blue,
+ struct fb_info *fb_info);
+static int rbv_setpalette (unsigned int regno, unsigned int red,
+ unsigned int green, unsigned int blue,
+ struct fb_info *fb_info);
+static int mdc_setpalette (unsigned int regno, unsigned int red,
+ unsigned int green, unsigned int blue,
+ struct fb_info *fb_info);
+static int toby_setpalette (unsigned int regno, unsigned int red,
+ unsigned int green, unsigned int blue,
+ struct fb_info *fb_info);
+static int civic_setpalette (unsigned int regno, unsigned int red,
+ unsigned int green, unsigned int blue,
+ struct fb_info *fb_info);
+static int csc_setpalette (unsigned int regno, unsigned int red,
+ unsigned int green, unsigned int blue,
+ struct fb_info *fb_info);
+
+static volatile struct {
+ unsigned char addr;
+ /* Note: word-aligned */
+ char pad[3];
+ unsigned char lut;
+} *valkyrie_cmap_regs;
+
+static volatile struct {
+ unsigned char addr;
+ unsigned char lut;
+} *v8_brazil_cmap_regs;
+
+static volatile struct {
+ unsigned char addr;
+ char pad1[3]; /* word aligned */
+ unsigned char lut;
+ char pad2[3]; /* word aligned */
+ unsigned char cntl; /* a guess as to purpose */
+} *rbv_cmap_regs;
+
+static volatile struct {
+ unsigned long reset;
+ unsigned long pad1[3];
+ unsigned char pad2[3];
+ unsigned char lut;
+} *dafb_cmap_regs;
+
+static volatile struct {
+ unsigned char addr; /* OFFSET: 0x00 */
+ unsigned char pad1[15];
+ unsigned char lut; /* OFFSET: 0x10 */
+ unsigned char pad2[15];
+ unsigned char status; /* OFFSET: 0x20 */
+ unsigned char pad3[7];
+ unsigned long vbl_addr; /* OFFSET: 0x28 */
+ unsigned int status2; /* OFFSET: 0x2C */
+} *civic_cmap_regs;
+
+static volatile struct {
+ char pad1[0x40];
+ unsigned char clut_waddr; /* 0x40 */
+ char pad2;
+ unsigned char clut_data; /* 0x42 */
+ char pad3[0x3];
+ unsigned char clut_raddr; /* 0x46 */
+} *csc_cmap_regs;
+
+/* We will leave these the way they are for the time being */
+struct mdc_cmap_regs {
+ char pad1[0x200200];
+ unsigned char addr;
+ char pad2[6];
+ unsigned char lut;
+};
+
+struct toby_cmap_regs {
+ char pad1[0x90018];
+ unsigned char lut; /* TFBClutWDataReg, offset 0x90018 */
+ char pad2[3];
+ unsigned char addr; /* TFBClutAddrReg, offset 0x9001C */
+};
+
+struct jet_cmap_regs {
+ char pad1[0xe0e000];
+ unsigned char addr;
+ unsigned char lut;
+};
+
+#define PIXEL_TO_MM(a) (((a)*10)/28) /* width in mm at 72 dpi */
+
+/* mode */
+static int video_slot = 0;
+
+static struct fb_var_screeninfo macfb_defined = {
+ .bits_per_pixel = 8,
+ .activate = FB_ACTIVATE_NOW,
+ .width = -1,
+ .height = -1,
+ .right_margin = 32,
+ .upper_margin = 16,
+ .lower_margin = 4,
+ .vsync_len = 4,
+ .vmode = FB_VMODE_NONINTERLACED,
+};
+
+static struct fb_fix_screeninfo macfb_fix = {
+ .id = "Macintosh ",
+ .type = FB_TYPE_PACKED_PIXELS,
+ .accel = FB_ACCEL_NONE,
+};
+
+static struct fb_info fb_info;
+static u32 pseudo_palette[17];
+static int inverse = 0;
+static int vidtest = 0;
+
+static int valkyrie_setpalette (unsigned int regno, unsigned int red,
+ unsigned int green, unsigned int blue,
+ struct fb_info *info)
+{
+ unsigned long flags;
+
+ red >>= 8;
+ green >>= 8;
+ blue >>= 8;
+
+ local_irq_save(flags);
+
+ /* tell clut which address to fill */
+ nubus_writeb(regno, &valkyrie_cmap_regs->addr);
+ nop();
+
+ /* send one color channel at a time */
+ nubus_writeb(red, &valkyrie_cmap_regs->lut);
+ nop();
+ nubus_writeb(green, &valkyrie_cmap_regs->lut);
+ nop();
+ nubus_writeb(blue, &valkyrie_cmap_regs->lut);
+
+ local_irq_restore(flags);
+ return 0;
+}
+
+/* Unlike the Valkyrie, the DAFB cannot set individual colormap
+ registers. Therefore, we do what the MacOS driver does (no
+ kidding!) and simply set them one by one until we hit the one we
+ want. */
+static int dafb_setpalette (unsigned int regno, unsigned int red,
+ unsigned int green, unsigned int blue,
+ struct fb_info *info)
+{
+ /* FIXME: really, really need to use ioremap() here,
+ phys_to_virt() doesn't work anymore */
+ static int lastreg = -1;
+ unsigned long flags;
+
+ red >>= 8;
+ green >>= 8;
+ blue >>= 8;
+
+ local_irq_save(flags);
+
+ /* fbdev will set an entire colourmap, but X won't. Hopefully
+ this should accommodate both of them */
+ if (regno != lastreg+1) {
+ int i;
+
+ /* Stab in the dark trying to reset the CLUT pointer */
+ nubus_writel(0, &dafb_cmap_regs->reset);
+ nop();
+
+ /* Loop until we get to the register we want */
+ for (i = 0; i < regno; i++) {
+ nubus_writeb(info->cmap.red[i] >> 8, &dafb_cmap_regs->lut);
+ nop();
+ nubus_writeb(info->cmap.green[i] >> 8, &dafb_cmap_regs->lut);
+ nop();
+ nubus_writeb(info->cmap.blue[i] >> 8, &dafb_cmap_regs->lut);
+ nop();
+ }
+ }
+
+ nubus_writeb(red, &dafb_cmap_regs->lut);
+ nop();
+ nubus_writeb(green, &dafb_cmap_regs->lut);
+ nop();
+ nubus_writeb(blue, &dafb_cmap_regs->lut);
+
+ local_irq_restore(flags);
+ lastreg = regno;
+ return 0;
+}
+
+/* V8 and Brazil seem to use the same DAC. Sonora does as well. */
+static int v8_brazil_setpalette (unsigned int regno, unsigned int red,
+ unsigned int green, unsigned int blue,
+ struct fb_info *info)
+{
+ unsigned int bpp = info->var.bits_per_pixel;
+ unsigned char _red =red>>8;
+ unsigned char _green=green>>8;
+ unsigned char _blue =blue>>8;
+ unsigned char _regno;
+ unsigned long flags;
+
+ if (bpp > 8) return 1; /* failsafe */
+
+ local_irq_save(flags);
+
+ /* On these chips, the CLUT register numbers are spread out
+ across the register space. Thus:
+
+ In 8bpp, all regnos are valid.
+
+ In 4bpp, the regnos are 0x0f, 0x1f, 0x2f, etc, etc
+
+ In 2bpp, the regnos are 0x3f, 0x7f, 0xbf, 0xff */
+ _regno = (regno << (8 - bpp)) | (0xFF >> bpp);
+ nubus_writeb(_regno, &v8_brazil_cmap_regs->addr); nop();
+
+ /* send one color channel at a time */
+ nubus_writeb(_red, &v8_brazil_cmap_regs->lut); nop();
+ nubus_writeb(_green, &v8_brazil_cmap_regs->lut); nop();
+ nubus_writeb(_blue, &v8_brazil_cmap_regs->lut);
+
+ local_irq_restore(flags);
+ return 0;
+}
+
+static int rbv_setpalette (unsigned int regno, unsigned int red,
+ unsigned int green, unsigned int blue,
+ struct fb_info *info)
+{
+ /* use MSBs */
+ unsigned char _red =red>>8;
+ unsigned char _green=green>>8;
+ unsigned char _blue =blue>>8;
+ unsigned char _regno;
+ unsigned long flags;
+
+ if (info->var.bits_per_pixel > 8) return 1; /* failsafe */
+
+ local_irq_save(flags);
+
+ /* From the VideoToolbox driver. Seems to be saying that
+ * regno #254 and #255 are the important ones for 1-bit color,
+ * regno #252-255 are the important ones for 2-bit color, etc.
+ */
+ _regno = regno + (256-(1 << info->var.bits_per_pixel));
+
+ /* reset clut? (VideoToolbox sez "not necessary") */
+ nubus_writeb(0xFF, &rbv_cmap_regs->cntl); nop();
+
+ /* tell clut which address to use. */
+ nubus_writeb(_regno, &rbv_cmap_regs->addr); nop();
+
+ /* send one color channel at a time. */
+ nubus_writeb(_red, &rbv_cmap_regs->lut); nop();
+ nubus_writeb(_green, &rbv_cmap_regs->lut); nop();
+ nubus_writeb(_blue, &rbv_cmap_regs->lut);
+
+ local_irq_restore(flags); /* done. */
+ return 0;
+}
+
+/* Macintosh Display Card (8x24) */
+static int mdc_setpalette(unsigned int regno, unsigned int red,
+ unsigned int green, unsigned int blue,
+ struct fb_info *info)
+{
+ volatile struct mdc_cmap_regs *cmap_regs =
+ nubus_slot_addr(video_slot);
+ /* use MSBs */
+ unsigned char _red =red>>8;
+ unsigned char _green=green>>8;
+ unsigned char _blue =blue>>8;
+ unsigned char _regno=regno;
+ unsigned long flags;
+
+ local_irq_save(flags);
+
+ /* the nop's are there to order writes. */
+ nubus_writeb(_regno, &cmap_regs->addr); nop();
+ nubus_writeb(_red, &cmap_regs->lut); nop();
+ nubus_writeb(_green, &cmap_regs->lut); nop();
+ nubus_writeb(_blue, &cmap_regs->lut);
+
+ local_irq_restore(flags);
+ return 0;
+}
+
+/* Toby frame buffer */
+static int toby_setpalette(unsigned int regno, unsigned int red,
+ unsigned int green, unsigned int blue,
+ struct fb_info *info)
+{
+ volatile struct toby_cmap_regs *cmap_regs =
+ nubus_slot_addr(video_slot);
+ unsigned int bpp = info->var.bits_per_pixel;
+ /* use MSBs */
+ unsigned char _red =~(red>>8);
+ unsigned char _green=~(green>>8);
+ unsigned char _blue =~(blue>>8);
+ unsigned char _regno = (regno << (8 - bpp)) | (0xFF >> bpp);
+ unsigned long flags;
+
+ local_irq_save(flags);
+
+ nubus_writeb(_regno, &cmap_regs->addr); nop();
+ nubus_writeb(_red, &cmap_regs->lut); nop();
+ nubus_writeb(_green, &cmap_regs->lut); nop();
+ nubus_writeb(_blue, &cmap_regs->lut);
+
+ local_irq_restore(flags);
+ return 0;
+}
+
+/* Jet frame buffer */
+static int jet_setpalette(unsigned int regno, unsigned int red,
+ unsigned int green, unsigned int blue,
+ struct fb_info *info)
+{
+ volatile struct jet_cmap_regs *cmap_regs =
+ nubus_slot_addr(video_slot);
+ /* use MSBs */
+ unsigned char _red = (red>>8);
+ unsigned char _green = (green>>8);
+ unsigned char _blue = (blue>>8);
+ unsigned long flags;
+
+ local_irq_save(flags);
+
+ nubus_writeb(regno, &cmap_regs->addr); nop();
+ nubus_writeb(_red, &cmap_regs->lut); nop();
+ nubus_writeb(_green, &cmap_regs->lut); nop();
+ nubus_writeb(_blue, &cmap_regs->lut);
+
+ local_irq_restore(flags);
+ return 0;
+}
+
+/*
+ * Civic framebuffer -- Quadra AV built-in video. A chip
+ * called Sebastian holds the actual color palettes, and
+ * apparently, there are two different banks of 512K RAM
+ * which can act as separate framebuffers for doing video
+ * input and viewing the screen at the same time! The 840AV
+ * Can add another 1MB RAM to give the two framebuffers
+ * 1MB RAM apiece.
+ *
+ * FIXME: this doesn't seem to work anymore.
+ */
+static int civic_setpalette (unsigned int regno, unsigned int red,
+ unsigned int green, unsigned int blue,
+ struct fb_info *info)
+{
+ static int lastreg = -1;
+ unsigned long flags;
+ int clut_status;
+
+ if (info->var.bits_per_pixel > 8) return 1; /* failsafe */
+
+ red >>= 8;
+ green >>= 8;
+ blue >>= 8;
+
+ local_irq_save(flags);
+
+ /*
+ * Set the register address
+ */
+ nubus_writeb(regno, &civic_cmap_regs->addr); nop();
+
+ /*
+ * Wait for VBL interrupt here;
+ * They're usually not enabled from Penguin, so we won't check
+ */
+#if 0
+ {
+#define CIVIC_VBL_OFFSET 0x120
+ volatile unsigned long *vbl = nubus_readl(civic_cmap_regs->vbl_addr + CIVIC_VBL_OFFSET);
+ /* do interrupt setup stuff here? */
+ *vbl = 0L; nop(); /* clear */
+ *vbl = 1L; nop(); /* set */
+ while (*vbl != 0L) /* wait for next vbl */
+ {
+ usleep(10); /* needed? */
+ }
+ /* do interrupt shutdown stuff here? */
+ }
+#endif
+
+ /*
+ * Grab a status word and do some checking;
+ * Then finally write the clut!
+ */
+ clut_status = nubus_readb(&civic_cmap_regs->status2);
+
+ if ((clut_status & 0x0008) == 0)
+ {
+#if 0
+ if ((clut_status & 0x000D) != 0)
+ {
+ nubus_writeb(0x00, &civic_cmap_regs->lut); nop();
+ nubus_writeb(0x00, &civic_cmap_regs->lut); nop();
+ }
+#endif
+
+ 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( 0x00, &civic_cmap_regs->lut); nop();
+ }
+ else
+ {
+ unsigned char junk;
+
+ junk = nubus_readb(&civic_cmap_regs->lut); nop();
+ junk = nubus_readb(&civic_cmap_regs->lut); nop();
+ junk = nubus_readb(&civic_cmap_regs->lut); nop();
+ junk = nubus_readb(&civic_cmap_regs->lut); nop();
+
+ if ((clut_status & 0x000D) != 0)
+ {
+ 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,
+ .fb_cursor = soft_cursor,
+};
+
+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;
+ }
+}
+
+void __init macfb_init(void)
+{
+ int video_cmap_len, video_is_nubus = 0;
+ struct nubus_dev* ndev = NULL;
+ char *option = NULL;
+
+ if (fb_get_options("macfb", &option))
+ return -ENODEV;
+ macfb_setup(option);
+
+ if (!MACH_IS_MAC)
+ return;
+
+ /* 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);
+
+ if (register_framebuffer(&fb_info) < 0)
+ return;
+
+ printk("fb%d: %s frame buffer device\n",
+ fb_info.node, fb_info.fix.id);
+}
+
+module_init(macfb_init);
+MODULE_LICENSE("GPL");