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/offb.c b/drivers/video/offb.c
new file mode 100644
index 0000000..42a6591
--- /dev/null
+++ b/drivers/video/offb.c
@@ -0,0 +1,538 @@
+/*
+ * linux/drivers/video/offb.c -- Open Firmware based frame buffer device
+ *
+ * Copyright (C) 1997 Geert Uytterhoeven
+ *
+ * This driver is partly based on the PowerMac console driver:
+ *
+ * Copyright (C) 1996 Paul Mackerras
+ *
+ * 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/config.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/tty.h>
+#include <linux/slab.h>
+#include <linux/vmalloc.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/fb.h>
+#include <linux/init.h>
+#include <linux/ioport.h>
+#include <asm/io.h>
+#include <asm/prom.h>
+
+#ifdef CONFIG_PPC64
+#include <asm/pci-bridge.h>
+#endif
+
+#ifdef CONFIG_PPC32
+#include <asm/bootx.h>
+#endif
+
+#include "macmodes.h"
+
+/* Supported palette hacks */
+enum {
+ cmap_unknown,
+ cmap_m64, /* ATI Mach64 */
+ cmap_r128, /* ATI Rage128 */
+ cmap_M3A, /* ATI Rage Mobility M3 Head A */
+ cmap_M3B, /* ATI Rage Mobility M3 Head B */
+ cmap_radeon, /* ATI Radeon */
+ cmap_gxt2000, /* IBM GXT2000 */
+};
+
+struct offb_par {
+ volatile void __iomem *cmap_adr;
+ volatile void __iomem *cmap_data;
+ int cmap_type;
+ int blanked;
+};
+
+struct offb_par default_par;
+
+ /*
+ * Interface used by the world
+ */
+
+int offb_init(void);
+
+static int offb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
+ u_int transp, struct fb_info *info);
+static int offb_blank(int blank, struct fb_info *info);
+
+#ifdef CONFIG_PPC32
+extern boot_infos_t *boot_infos;
+#endif
+
+static void offb_init_nodriver(struct device_node *);
+static void offb_init_fb(const char *name, const char *full_name,
+ int width, int height, int depth, int pitch,
+ unsigned long address, struct device_node *dp);
+
+static struct fb_ops offb_ops = {
+ .owner = THIS_MODULE,
+ .fb_setcolreg = offb_setcolreg,
+ .fb_blank = offb_blank,
+ .fb_fillrect = cfb_fillrect,
+ .fb_copyarea = cfb_copyarea,
+ .fb_imageblit = cfb_imageblit,
+ .fb_cursor = soft_cursor,
+};
+
+ /*
+ * 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.
+ */
+
+static int offb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
+ u_int transp, struct fb_info *info)
+{
+ struct offb_par *par = (struct offb_par *) info->par;
+
+ if (!par->cmap_adr || regno > 255)
+ return 1;
+
+ red >>= 8;
+ green >>= 8;
+ blue >>= 8;
+
+ switch (par->cmap_type) {
+ case cmap_m64:
+ writeb(regno, par->cmap_adr);
+ writeb(red, par->cmap_data);
+ writeb(green, par->cmap_data);
+ writeb(blue, par->cmap_data);
+ break;
+ case cmap_M3A:
+ /* Clear PALETTE_ACCESS_CNTL in DAC_CNTL */
+ out_le32(par->cmap_adr + 0x58,
+ in_le32(par->cmap_adr + 0x58) & ~0x20);
+ case cmap_r128:
+ /* Set palette index & data */
+ out_8(par->cmap_adr + 0xb0, regno);
+ out_le32(par->cmap_adr + 0xb4,
+ (red << 16 | green << 8 | blue));
+ break;
+ case cmap_M3B:
+ /* Set PALETTE_ACCESS_CNTL in DAC_CNTL */
+ out_le32(par->cmap_adr + 0x58,
+ in_le32(par->cmap_adr + 0x58) | 0x20);
+ /* Set palette index & data */
+ out_8(par->cmap_adr + 0xb0, regno);
+ out_le32(par->cmap_adr + 0xb4, (red << 16 | green << 8 | blue));
+ break;
+ case cmap_radeon:
+ /* Set palette index & data (could be smarter) */
+ out_8(par->cmap_adr + 0xb0, regno);
+ out_le32(par->cmap_adr + 0xb4, (red << 16 | green << 8 | blue));
+ break;
+ case cmap_gxt2000:
+ out_le32((unsigned __iomem *) par->cmap_adr + regno,
+ (red << 16 | green << 8 | blue));
+ break;
+ }
+
+ if (regno < 16)
+ switch (info->var.bits_per_pixel) {
+ case 16:
+ ((u16 *) (info->pseudo_palette))[regno] =
+ (regno << 10) | (regno << 5) | regno;
+ break;
+ case 32:
+ {
+ int i = (regno << 8) | regno;
+ ((u32 *) (info->pseudo_palette))[regno] =
+ (i << 16) | i;
+ break;
+ }
+ }
+ return 0;
+}
+
+ /*
+ * Blank the display.
+ */
+
+static int offb_blank(int blank, struct fb_info *info)
+{
+ struct offb_par *par = (struct offb_par *) info->par;
+ int i, j;
+
+ if (!par->cmap_adr)
+ return 0;
+
+ if (!par->blanked)
+ if (!blank)
+ return 0;
+
+ par->blanked = blank;
+
+ if (blank)
+ for (i = 0; i < 256; i++) {
+ switch (par->cmap_type) {
+ case cmap_m64:
+ writeb(i, par->cmap_adr);
+ for (j = 0; j < 3; j++)
+ writeb(0, par->cmap_data);
+ break;
+ case cmap_M3A:
+ /* Clear PALETTE_ACCESS_CNTL in DAC_CNTL */
+ out_le32(par->cmap_adr + 0x58,
+ in_le32(par->cmap_adr + 0x58) & ~0x20);
+ case cmap_r128:
+ /* Set palette index & data */
+ out_8(par->cmap_adr + 0xb0, i);
+ out_le32(par->cmap_adr + 0xb4, 0);
+ break;
+ case cmap_M3B:
+ /* Set PALETTE_ACCESS_CNTL in DAC_CNTL */
+ out_le32(par->cmap_adr + 0x58,
+ in_le32(par->cmap_adr + 0x58) | 0x20);
+ /* Set palette index & data */
+ out_8(par->cmap_adr + 0xb0, i);
+ out_le32(par->cmap_adr + 0xb4, 0);
+ break;
+ case cmap_radeon:
+ out_8(par->cmap_adr + 0xb0, i);
+ out_le32(par->cmap_adr + 0xb4, 0);
+ break;
+ case cmap_gxt2000:
+ out_le32((unsigned __iomem *) par->cmap_adr + i,
+ 0);
+ break;
+ }
+ } else
+ fb_set_cmap(&info->cmap, info);
+ return 0;
+}
+
+ /*
+ * Initialisation
+ */
+
+int __init offb_init(void)
+{
+ struct device_node *dp = NULL, *boot_disp = NULL;
+#if defined(CONFIG_BOOTX_TEXT) && defined(CONFIG_PPC32)
+ struct device_node *macos_display = NULL;
+#endif
+ if (fb_get_options("offb", NULL))
+ return -ENODEV;
+
+#if defined(CONFIG_BOOTX_TEXT) && defined(CONFIG_PPC32)
+ /* If we're booted from BootX... */
+ if (boot_infos != 0) {
+ unsigned long addr =
+ (unsigned long) boot_infos->dispDeviceBase;
+ /* find the device node corresponding to the macos display */
+ while ((dp = of_find_node_by_type(dp, "display"))) {
+ int i;
+ /*
+ * Grrr... It looks like the MacOS ATI driver
+ * munges the assigned-addresses property (but
+ * the AAPL,address value is OK).
+ */
+ if (strncmp(dp->name, "ATY,", 4) == 0
+ && dp->n_addrs == 1) {
+ unsigned int *ap =
+ (unsigned int *) get_property(dp,
+ "AAPL,address",
+ NULL);
+ if (ap != NULL) {
+ dp->addrs[0].address = *ap;
+ dp->addrs[0].size = 0x01000000;
+ }
+ }
+
+ /*
+ * The LTPro on the Lombard powerbook has no addresses
+ * on the display nodes, they are on their parent.
+ */
+ if (dp->n_addrs == 0
+ && device_is_compatible(dp, "ATY,264LTPro")) {
+ int na;
+ unsigned int *ap = (unsigned int *)
+ get_property(dp, "AAPL,address", &na);
+ if (ap != 0)
+ for (na /= sizeof(unsigned int);
+ na > 0; --na, ++ap)
+ if (*ap <= addr
+ && addr <
+ *ap + 0x1000000)
+ goto foundit;
+ }
+
+ /*
+ * See if the display address is in one of the address
+ * ranges for this display.
+ */
+ for (i = 0; i < dp->n_addrs; ++i) {
+ if (dp->addrs[i].address <= addr
+ && addr <
+ dp->addrs[i].address +
+ dp->addrs[i].size)
+ break;
+ }
+ if (i < dp->n_addrs) {
+ foundit:
+ printk(KERN_INFO "MacOS display is %s\n",
+ dp->full_name);
+ macos_display = dp;
+ break;
+ }
+ }
+
+ /* initialize it */
+ offb_init_fb(macos_display ? macos_display->
+ name : "MacOS display",
+ macos_display ? macos_display->
+ full_name : "MacOS display",
+ boot_infos->dispDeviceRect[2],
+ boot_infos->dispDeviceRect[3],
+ boot_infos->dispDeviceDepth,
+ boot_infos->dispDeviceRowBytes, addr, NULL);
+ }
+#endif /* defined(CONFIG_BOOTX_TEXT) && defined(CONFIG_PPC32) */
+
+ for (dp = NULL; (dp = of_find_node_by_type(dp, "display"));) {
+ if (get_property(dp, "linux,opened", NULL) &&
+ get_property(dp, "linux,boot-display", NULL)) {
+ boot_disp = dp;
+ offb_init_nodriver(dp);
+ }
+ }
+ for (dp = NULL; (dp = of_find_node_by_type(dp, "display"));) {
+ if (get_property(dp, "linux,opened", NULL) &&
+ dp != boot_disp)
+ offb_init_nodriver(dp);
+ }
+
+ return 0;
+}
+
+
+static void __init offb_init_nodriver(struct device_node *dp)
+{
+ int *pp, i;
+ unsigned int len;
+ int width = 640, height = 480, depth = 8, pitch;
+ unsigned *up;
+ unsigned long address;
+
+ if ((pp = (int *) get_property(dp, "depth", &len)) != NULL
+ && len == sizeof(int))
+ depth = *pp;
+ if ((pp = (int *) get_property(dp, "width", &len)) != NULL
+ && len == sizeof(int))
+ width = *pp;
+ if ((pp = (int *) get_property(dp, "height", &len)) != NULL
+ && len == sizeof(int))
+ height = *pp;
+ if ((pp = (int *) get_property(dp, "linebytes", &len)) != NULL
+ && len == sizeof(int)) {
+ pitch = *pp;
+ if (pitch == 1)
+ pitch = 0x1000;
+ } else
+ pitch = width;
+ if ((up = (unsigned *) get_property(dp, "address", &len)) != NULL
+ && len == sizeof(unsigned))
+ address = (u_long) * up;
+ else {
+ for (i = 0; i < dp->n_addrs; ++i)
+ if (dp->addrs[i].size >=
+ pitch * height * depth / 8)
+ break;
+ if (i >= dp->n_addrs) {
+ printk(KERN_ERR
+ "no framebuffer address found for %s\n",
+ dp->full_name);
+ return;
+ }
+
+ address = (u_long) dp->addrs[i].address;
+
+#ifdef CONFIG_PPC64
+ address += dp->phb->pci_mem_offset;
+#endif
+
+ /* kludge for valkyrie */
+ if (strcmp(dp->name, "valkyrie") == 0)
+ address += 0x1000;
+ }
+ offb_init_fb(dp->name, dp->full_name, width, height, depth,
+ pitch, address, dp);
+
+}
+
+static void __init offb_init_fb(const char *name, const char *full_name,
+ int width, int height, int depth,
+ int pitch, unsigned long address,
+ struct device_node *dp)
+{
+ unsigned long res_size = pitch * height * depth / 8;
+ struct offb_par *par = &default_par;
+ unsigned long res_start = address;
+ struct fb_fix_screeninfo *fix;
+ struct fb_var_screeninfo *var;
+ struct fb_info *info;
+ int size;
+
+ if (!request_mem_region(res_start, res_size, "offb"))
+ return;
+
+ printk(KERN_INFO
+ "Using unsupported %dx%d %s at %lx, depth=%d, pitch=%d\n",
+ width, height, name, address, depth, pitch);
+ if (depth != 8 && depth != 16 && depth != 32) {
+ printk(KERN_ERR "%s: can't use depth = %d\n", full_name,
+ depth);
+ release_mem_region(res_start, res_size);
+ return;
+ }
+
+ size = sizeof(struct fb_info) + sizeof(u32) * 17;
+
+ info = kmalloc(size, GFP_ATOMIC);
+
+ if (info == 0) {
+ release_mem_region(res_start, res_size);
+ return;
+ }
+ memset(info, 0, size);
+
+ fix = &info->fix;
+ var = &info->var;
+
+ strcpy(fix->id, "OFfb ");
+ strncat(fix->id, name, sizeof(fix->id) - sizeof("OFfb "));
+ fix->id[sizeof(fix->id) - 1] = '\0';
+
+ var->xres = var->xres_virtual = width;
+ var->yres = var->yres_virtual = height;
+ fix->line_length = pitch;
+
+ fix->smem_start = address;
+ fix->smem_len = pitch * height;
+ fix->type = FB_TYPE_PACKED_PIXELS;
+ fix->type_aux = 0;
+
+ par->cmap_type = cmap_unknown;
+ if (depth == 8) {
+ /* XXX kludge for ati */
+ if (dp && !strncmp(name, "ATY,Rage128", 11)) {
+ unsigned long regbase = dp->addrs[2].address;
+ par->cmap_adr = ioremap(regbase, 0x1FFF);
+ par->cmap_type = cmap_r128;
+ } else if (dp && (!strncmp(name, "ATY,RageM3pA", 12)
+ || !strncmp(name, "ATY,RageM3p12A", 14))) {
+ unsigned long regbase =
+ dp->parent->addrs[2].address;
+ par->cmap_adr = ioremap(regbase, 0x1FFF);
+ par->cmap_type = cmap_M3A;
+ } else if (dp && !strncmp(name, "ATY,RageM3pB", 12)) {
+ unsigned long regbase =
+ dp->parent->addrs[2].address;
+ par->cmap_adr = ioremap(regbase, 0x1FFF);
+ par->cmap_type = cmap_M3B;
+ } else if (dp && !strncmp(name, "ATY,Rage6", 9)) {
+ unsigned long regbase = dp->addrs[1].address;
+ par->cmap_adr = ioremap(regbase, 0x1FFF);
+ par->cmap_type = cmap_radeon;
+ } else if (!strncmp(name, "ATY,", 4)) {
+ unsigned long base = address & 0xff000000UL;
+ par->cmap_adr =
+ ioremap(base + 0x7ff000, 0x1000) + 0xcc0;
+ par->cmap_data = par->cmap_adr + 1;
+ par->cmap_type = cmap_m64;
+ } else if (device_is_compatible(dp, "pci1014,b7")) {
+ unsigned long regbase = dp->addrs[0].address;
+ par->cmap_adr = ioremap(regbase + 0x6000, 0x1000);
+ par->cmap_type = cmap_gxt2000;
+ }
+ fix->visual = par->cmap_adr ? FB_VISUAL_PSEUDOCOLOR
+ : FB_VISUAL_STATIC_PSEUDOCOLOR;
+ } else
+ fix->visual = /* par->cmap_adr ? FB_VISUAL_DIRECTCOLOR
+ : */ FB_VISUAL_TRUECOLOR;
+
+ var->xoffset = var->yoffset = 0;
+ var->bits_per_pixel = depth;
+ switch (depth) {
+ case 8:
+ var->bits_per_pixel = 8;
+ var->red.offset = 0;
+ var->red.length = 8;
+ var->green.offset = 0;
+ var->green.length = 8;
+ var->blue.offset = 0;
+ var->blue.length = 8;
+ var->transp.offset = 0;
+ var->transp.length = 0;
+ break;
+ case 16: /* RGB 555 */
+ var->bits_per_pixel = 16;
+ var->red.offset = 10;
+ var->red.length = 5;
+ var->green.offset = 5;
+ var->green.length = 5;
+ var->blue.offset = 0;
+ var->blue.length = 5;
+ var->transp.offset = 0;
+ var->transp.length = 0;
+ break;
+ case 32: /* RGB 888 */
+ var->bits_per_pixel = 32;
+ var->red.offset = 16;
+ var->red.length = 8;
+ var->green.offset = 8;
+ var->green.length = 8;
+ var->blue.offset = 0;
+ var->blue.length = 8;
+ var->transp.offset = 24;
+ var->transp.length = 8;
+ break;
+ }
+ var->red.msb_right = var->green.msb_right = var->blue.msb_right =
+ var->transp.msb_right = 0;
+ var->grayscale = 0;
+ var->nonstd = 0;
+ var->activate = 0;
+ var->height = var->width = -1;
+ var->pixclock = 10000;
+ var->left_margin = var->right_margin = 16;
+ var->upper_margin = var->lower_margin = 16;
+ var->hsync_len = var->vsync_len = 8;
+ var->sync = 0;
+ var->vmode = FB_VMODE_NONINTERLACED;
+
+ info->fbops = &offb_ops;
+ info->screen_base = ioremap(address, fix->smem_len);
+ info->par = par;
+ info->pseudo_palette = (void *) (info + 1);
+ info->flags = FBINFO_DEFAULT;
+
+ fb_alloc_cmap(&info->cmap, 256, 0);
+
+ if (register_framebuffer(info) < 0) {
+ kfree(info);
+ release_mem_region(res_start, res_size);
+ return;
+ }
+
+ printk(KERN_INFO "fb%d: Open Firmware frame buffer device on %s\n",
+ info->node, full_name);
+}
+
+module_init(offb_init);
+MODULE_LICENSE("GPL");