patch-2.1.112 linux/drivers/video/platinumfb.c
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- Lines: 1053
- Date:
Sun Jul 26 14:40:19 1998
- Orig file:
v2.1.111/linux/drivers/video/platinumfb.c
- Orig date:
Wed Dec 31 16:00:00 1969
diff -u --recursive --new-file v2.1.111/linux/drivers/video/platinumfb.c linux/drivers/video/platinumfb.c
@@ -0,0 +1,1052 @@
+/*
+ * platinumfb.c -- frame buffer device for the PowerMac 'platinum' display
+ *
+ * Created 12 July 1998 by Dan Jacobowitz <dan@debian.org>
+ * Copyright (C) 1998 Dan Jacobowitz
+ *
+ * Frame buffer structure from:
+ * drivers/video/chipsfb.c -- frame buffer device for
+ * Chips & Technologies 65550 chip.
+ *
+ * Copyright (C) 1998 Paul Mackerras
+ *
+ * This file is derived from the Powermac "chips" driver:
+ * Copyright (C) 1997 Fabio Riccardi.
+ * And from the frame buffer device for Open Firmware-initialized devices:
+ * Copyright (C) 1997 Geert Uytterhoeven.
+ *
+ * Hardware information from:
+ * platinum.c: Console support for PowerMac "platinum" display adaptor.
+ * 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/malloc.h>
+#include <linux/vmalloc.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/fb.h>
+#include <linux/selection.h>
+#include <linux/init.h>
+#include <linux/pci.h>
+#include <linux/nvram.h>
+#ifdef CONFIG_FB_COMPAT_XPMAC
+#include <asm/vc_ioctl.h>
+#endif
+#include <asm/io.h>
+#include <asm/prom.h>
+#include <asm/pgtable.h>
+#include <asm/adb.h>
+#include <asm/cuda.h>
+
+#include "fbcon.h"
+#include "fbcon-cfb8.h"
+#include "fbcon-cfb16.h"
+#include "fbcon-cfb32.h"
+
+#include "macmodes.h"
+#include "platinumfb.h"
+
+static int currcon = 0;
+static int switching = 0;
+
+struct fb_par_platinum {
+ int vmode, cmode;
+ int xres, yres;
+ int vxres, vyres;
+ int xoffset, yoffset;
+};
+
+struct fb_info_platinum {
+ struct fb_info info;
+ struct fb_fix_screeninfo fix;
+ struct fb_var_screeninfo var;
+ struct display disp;
+ struct fb_par_platinum par;
+ struct {
+ __u8 red, green, blue;
+ } palette[256];
+
+ volatile struct cmap_regs *cmap_regs;
+ unsigned long cmap_regs_phys;
+
+ volatile struct platinum_regs *platinum_regs;
+ unsigned long platinum_regs_phys;
+
+ __u8 *frame_buffer;
+ __u8 *base_frame_buffer;
+ unsigned long frame_buffer_phys;
+
+ int sense;
+ unsigned long total_vram;
+};
+
+/*
+ * Exported functions
+ */
+void platinum_init(void);
+void platinum_of_init(struct device_node *dp);
+
+static int platinum_open(struct fb_info *info, int user);
+static int platinum_release(struct fb_info *info, int user);
+static int platinum_get_fix(struct fb_fix_screeninfo *fix, int con,
+ struct fb_info *info);
+static int platinum_get_var(struct fb_var_screeninfo *var, int con,
+ struct fb_info *info);
+static int platinum_set_var(struct fb_var_screeninfo *var, int con,
+ struct fb_info *info);
+static int platinum_pan_display(struct fb_var_screeninfo *var, int con,
+ struct fb_info *info);
+static int platinum_get_cmap(struct fb_cmap *cmap, int kspc, int con,
+ struct fb_info *info);
+static int platinum_set_cmap(struct fb_cmap *cmap, int kspc, int con,
+ struct fb_info *info);
+static int platinum_ioctl(struct inode *inode, struct file *file, u_int cmd,
+ u_long arg, int con, struct fb_info *info);
+
+static int read_platinum_sense(struct fb_info_platinum *p);
+static inline int platinum_vram_reqd(int video_mode, int color_mode);
+static void set_platinum_clock(struct fb_info_platinum *p, unsigned char *params);
+static void platinum_set_hardware(struct fb_info_platinum *p);
+static void platinum_par_to_all(struct fb_info_platinum *p, int init);
+static inline void platinum_par_to_var(struct fb_par_platinum *par, struct fb_var_screeninfo *var);
+static int platinum_var_to_par(struct fb_var_screeninfo *var,
+ struct fb_par_platinum *par, const struct fb_info *fb_info);
+
+static void platinum_init_info(struct fb_info *info, struct fb_info_platinum *p);
+static void platinum_par_to_display(struct fb_par_platinum *par,
+ struct display *disp, struct fb_fix_screeninfo *fix, struct fb_info_platinum *p);
+static void platinum_init_display(struct display *disp);
+static void platinum_par_to_fix(struct fb_par_platinum *par, struct fb_fix_screeninfo *fix,
+ struct fb_info_platinum *p);
+static void platinum_init_fix(struct fb_fix_screeninfo *fix, struct fb_info_platinum *p);
+
+static struct fb_ops platinumfb_ops = {
+ platinum_open,
+ platinum_release,
+ platinum_get_fix,
+ platinum_get_var,
+ platinum_set_var,
+ platinum_get_cmap,
+ platinum_set_cmap,
+ platinum_pan_display,
+ platinum_ioctl
+};
+
+static int platinum_getcolreg(u_int regno, u_int *red, u_int *green,
+ u_int *blue, u_int *transp, struct fb_info *info);
+static int platinum_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
+ u_int transp, struct fb_info *info);
+static void do_install_cmap(int con, struct fb_info *info);
+
+#define FUNCID { printk(KERN_INFO "entering %s\n", __FUNCTION__); }
+
+__openfirmware
+
+
+static int platinum_open(struct fb_info *info, int user)
+{
+ MOD_INC_USE_COUNT;
+ return 0;
+}
+
+static int platinum_release(struct fb_info *info, int user)
+{
+ MOD_DEC_USE_COUNT;
+ return 0;
+}
+
+static int platinum_get_fix(struct fb_fix_screeninfo *fix, int con,
+ struct fb_info *info)
+{
+ struct fb_info_platinum *cp = (struct fb_info_platinum *) info;
+
+ *fix = cp->fix;
+ return 0;
+}
+
+static int platinum_get_var(struct fb_var_screeninfo *var, int con,
+ struct fb_info *info)
+{
+ struct fb_info_platinum *cp = (struct fb_info_platinum *) info;
+
+ *var = cp->var;
+ return 0;
+}
+
+/* Sets everything according to var */
+static int platinum_set_var(struct fb_var_screeninfo *var, int con,
+ struct fb_info *info)
+{
+ struct fb_info_platinum *p = (struct fb_info_platinum *) info;
+ struct display *disp;
+ struct fb_par_platinum par;
+ int depthchange, err;
+
+// FUNCID;
+ disp = (con >= 0) ? &fb_display[con] : &p->disp;
+ if((err = platinum_var_to_par(var, &par, info))) {
+ printk (KERN_ERR "Error in platinum_set_var, calling platinum_var_to_par: %d.\n", err);
+ return err;
+ }
+
+ if ((var->activate & FB_ACTIVATE_MASK) != FB_ACTIVATE_NOW) {
+ printk("Not activating, in platinum_set_var.\n");
+ platinum_par_to_var(&par, var);
+ return 0;
+ }
+/* I know, we want to use fb_display[con], but grab certain info from p->var instead. */
+#define DIRTY(x) (p->var.x != var->x)
+ depthchange = DIRTY(bits_per_pixel);
+ if(!DIRTY(xres) && !DIRTY(yres) && !DIRTY(xres_virtual) &&
+ !DIRTY(yres_virtual) && !DIRTY(bits_per_pixel)) {
+ platinum_par_to_var(&par, var);
+ p->var = disp->var = *var;
+ return 0;
+ }
+ printk("Original bpp is %d, new bpp %d.\n", p->var.bits_per_pixel, var->bits_per_pixel);
+ /* OK, we're getting here at the right times... */
+ p->par = par;
+ platinum_par_to_var(&par, var);
+ p->var = *var;
+ platinum_par_to_fix(&par, &p->fix, p);
+ platinum_par_to_display(&par, disp, &p->fix, p);
+ p->disp = *disp;
+
+ if(info->changevar && !switching) /* Don't want to do this if just switching consoles. */
+ (*info->changevar)(con);
+ if(con == currcon)
+ platinum_set_hardware(p);
+ if(depthchange)
+ if((err = fb_alloc_cmap(&disp->cmap, 0, 0)))
+ return err;
+ if(depthchange || switching)
+ do_install_cmap(con, info);
+ return 0;
+}
+
+static int platinum_pan_display(struct fb_var_screeninfo *var, int con,
+ struct fb_info *info)
+{
+ /*
+ * Pan (or wrap, depending on the `vmode' field) the display using the
+ * `xoffset' and `yoffset' fields of the `var' structure.
+ * If the values don't fit, return -EINVAL.
+ */
+
+// FUNCID;
+ if (var->xoffset != 0 || var->yoffset != 0)
+ return -EINVAL;
+ return 0;
+}
+
+static int platinum_get_cmap(struct fb_cmap *cmap, int kspc, int con,
+ struct fb_info *info)
+{
+// FUNCID;
+ if (con == currcon) /* current console? */
+ return fb_get_cmap(cmap, &fb_display[con].var, kspc,
+ platinum_getcolreg, info);
+ if (fb_display[con].cmap.len) /* non default colormap? */
+ fb_copy_cmap(&fb_display[con].cmap, cmap, kspc? 0: 2);
+ else {
+ int size = fb_display[con].var.bits_per_pixel == 16 ? 32 : 256;
+ fb_copy_cmap(fb_default_cmap(size), cmap, kspc ? 0 : 2);
+ }
+ return 0;
+}
+
+static int platinum_set_cmap(struct fb_cmap *cmap, int kspc, int con,
+ struct fb_info *info)
+{
+ struct display *disp = &fb_display[con];
+ int err;
+
+// FUNCID;
+ if (disp->cmap.len == 0) {
+ int size = fb_display[con].var.bits_per_pixel == 16 ? 32 : 256;
+ err = fb_alloc_cmap(&disp->cmap, size, 0);
+ if (err)
+ return err;
+ }
+
+ if (con == currcon)
+ return fb_set_cmap(cmap, &disp->var, kspc, platinum_setcolreg,
+ info);
+ fb_copy_cmap(cmap, &disp->cmap, kspc ? 0 : 1);
+ return 0;
+}
+
+static int platinum_ioctl(struct inode *inode, struct file *file, u_int cmd,
+ u_long arg, int con, struct fb_info *info)
+{
+// FUNCID;
+ return -EINVAL;
+}
+
+static int platinum_switch(int con, struct fb_info *info)
+{
+// FUNCID;
+ if (fb_display[currcon].cmap.len)
+ fb_get_cmap(&fb_display[currcon].cmap,
+ &fb_display[currcon].var, 1, platinum_getcolreg,
+ info);
+ currcon = con;
+#if 0
+ platinum_var_to_par(&fb_display[currcon].var, &par, info);
+ platinum_set_par(&par, info); /*STOPPEDHERE - did i define that? */
+ do_install_cmap(con, info);
+#else
+ /* I see no reason not to do this. Minus info->changevar(). */
+ /* DOH. This makes platinum_set_var compare, you guessed it, */
+ /* fb_display[con].var (first param), and fb_display[con].var! */
+ /* Perhaps I just fixed that... */
+ switching = 1;
+ platinum_set_var(&fb_display[con].var, con, info);
+ switching = 0;
+#endif
+ return 0;
+}
+
+static int platinum_updatevar(int con, struct fb_info *info)
+{
+ return 0;
+}
+
+static void platinum_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
+ */
+/* [danj] I think there's something fishy about those constants... */
+/*
+ struct fb_info_platinum *p = (struct fb_info_platinum *) info;
+ int ctrl;
+
+ ctrl = ld_le32(&p->platinum_regs->ctrl.r) | 0x33;
+ if (blank_mode)
+ --blank_mode;
+ if (blank_mode & VESA_VSYNC_SUSPEND)
+ ctrl &= ~3;
+ if (blank_mode & VESA_HSYNC_SUSPEND)
+ ctrl &= ~0x30;
+ out_le32(&p->platinum_regs->ctrl.r, ctrl);
+*/
+/* TODO: Figure out how the heck to powerdown this thing! */
+//FUNCID;
+ return;
+}
+
+static int platinum_getcolreg(u_int regno, u_int *red, u_int *green,
+ u_int *blue, u_int *transp, struct fb_info *info)
+{
+ struct fb_info_platinum *p = (struct fb_info_platinum *) info;
+
+// FUNCID;
+ if (regno > 255 || regno < 0)
+ return 1;
+ *red = p->palette[regno].red;
+ *green = p->palette[regno].green;
+ *blue = p->palette[regno].blue;
+ return 0;
+}
+
+static int platinum_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
+ u_int transp, struct fb_info *info)
+{
+ struct fb_info_platinum *p = (struct fb_info_platinum *) info;
+
+// FUNCID;
+ if (regno > 255 || regno < 0)
+ return 1;
+ p->palette[regno].red = red;
+ p->palette[regno].green = green;
+ p->palette[regno].blue = blue;
+
+ out_8(&p->cmap_regs->addr, regno); /* tell clut what addr to fill */
+ out_8(&p->cmap_regs->lut, red); /* send one color channel at */
+ out_8(&p->cmap_regs->lut, green); /* a time... */
+ out_8(&p->cmap_regs->lut, blue);
+
+ if(regno < 16) {
+#if 0
+#ifdef FBCON_HAS_CFB16
+ fbcon_cfb16_cmap[regno] = (red << 10) | (green << 5) | blue;
+#endif
+#ifdef FBCON_HAS_CFB32
+ fbcon_cfb32_cmap[regno] = (red << 16) | (green << 8) | blue;
+ /* I think. */
+#endif
+#else
+#ifdef FBCON_HAS_CFB16
+ fbcon_cfb16_cmap[regno] = (regno << 10) | (regno << 5) | regno;
+#endif
+#ifdef FBCON_HAS_CFB32
+ fbcon_cfb32_cmap[regno] = (regno << 24) | (regno << 16) | (regno << 8) | regno;
+ /* I think. */
+#endif
+#endif
+ }
+ return 0;
+}
+
+static void do_install_cmap(int con, struct fb_info *info)
+{
+// FUNCID;
+ if (con != currcon)
+ return;
+ if (fb_display[con].cmap.len)
+ fb_set_cmap(&fb_display[con].cmap, &fb_display[con].var, 1,
+ platinum_setcolreg, info);
+ else {
+ int size = fb_display[con].var.bits_per_pixel == 16 ? 32 : 256;
+ fb_set_cmap(fb_default_cmap(size), &fb_display[con].var, 1,
+ platinum_setcolreg, info);
+ }
+}
+
+#ifdef CONFIG_FB_COMPAT_XPMAC
+extern struct vc_mode display_info;
+extern struct fb_info *console_fb_info;
+#if 0
+extern int (*console_setmode_ptr)(struct vc_mode *, int);
+extern int (*console_set_cmap_ptr)(struct fb_cmap *, int, int,
+ struct fb_info *);
+int console_setmode(struct vc_mode *, int);
+#endif
+#endif /* CONFIG_FB_COMPAT_XPMAC */
+
+static inline int platinum_vram_reqd(int video_mode, int color_mode)
+{
+ return vmode_attrs[video_mode - 1].vres
+ * platinum_reg_init[video_mode-1]->pitch[color_mode];
+}
+
+#define STORE_D2(a, d) { \
+ out_8(&p->cmap_regs->addr, (a+32)); \
+ out_8(&p->cmap_regs->d2, (d)); \
+}
+
+static void set_platinum_clock(struct fb_info_platinum *p, unsigned char *clock_params)
+{
+// FUNCID;
+ STORE_D2(6, 0xc6);
+ out_8(&p->cmap_regs->addr,3+32);
+ if (in_8(&p->cmap_regs->d2) == 2) {
+ STORE_D2(7, clock_params[0]);
+ STORE_D2(8, clock_params[1]);
+ STORE_D2(3, 3);
+ } else {
+ STORE_D2(4, clock_params[0]);
+ STORE_D2(5, clock_params[1]);
+ STORE_D2(3, 2);
+ }
+
+ __delay(5000);
+ STORE_D2(9, 0xa6);
+}
+
+
+__initfunc(static void init_platinum(struct fb_info_platinum *p))
+{
+ struct fb_par_platinum *par = &p->par;
+
+// FUNCID;
+ p->sense = read_platinum_sense(p);
+ printk("Monitor sense value = 0x%x, ", p->sense);
+ /* Try to pick a video mode out of NVRAM if we have one. */
+ par->vmode = nvram_read_byte(NV_VMODE);
+ if(par->vmode <= 0 || par->vmode > VMODE_MAX || !platinum_reg_init[par->vmode - 1])
+ par->vmode = VMODE_CHOOSE;
+ if(par->vmode == VMODE_CHOOSE)
+ par->vmode = mac_map_monitor_sense(p->sense);
+ if(!platinum_reg_init[par->vmode - 1])
+ par->vmode = VMODE_640_480_67;
+
+ par->cmode = nvram_read_byte(NV_CMODE);
+ if(par->cmode < CMODE_8 || par->cmode > CMODE_32)
+ par->cmode = CMODE_8;
+ /*
+ * Reduce the pixel size if we don't have enough VRAM.
+ */
+ while(par->cmode > CMODE_8 && platinum_vram_reqd(par->vmode, par->cmode) > p->total_vram)
+ par->cmode--;
+
+ printk("using video mode %d and color mode %d.\n", par->vmode, par->cmode);
+
+ par->vxres = par->xres = vmode_attrs[par->vmode - 1].hres;
+ par->vyres = par->yres = vmode_attrs[par->vmode - 1].vres;
+ par->xoffset = par->yoffset = 0;
+
+ platinum_par_to_all(p, 1);
+
+ if (register_framebuffer(&p->info) < 0) {
+ kfree(p);
+ return;
+ }
+ platinum_set_hardware(p);
+
+ printk("fb%d: platinum display adapter\n", GET_FB_IDX(p->info.node));
+}
+
+/* Now how about actually saying, Make it so! */
+/* Some things in here probably don't need to be done each time. */
+static void platinum_set_hardware(struct fb_info_platinum *p)
+{
+ struct platinum_regvals *init;
+ int i, dtype, clkmode;
+ int vmode, cmode;
+
+// FUNCID;
+ vmode = p->par.vmode;
+ cmode = p->par.cmode;
+
+ init = platinum_reg_init[vmode - 1];
+
+ /* Initialize display timing registers */
+ out_be32(&p->platinum_regs->reg[24].r, 7); /* turn display off */
+
+ for (i = 0; i < 26; ++i)
+ out_be32(&p->platinum_regs->reg[i+32].r, init->regs[i]);
+ out_be32(&p->platinum_regs->reg[26+32].r, (p->total_vram == 0x100000 ?
+ init->offset[cmode] + 4 - cmode :
+ init->offset[cmode]));
+ out_be32(&p->platinum_regs->reg[16].r, (unsigned) p->frame_buffer_phys + init->fb_offset);
+ out_be32(&p->platinum_regs->reg[18].r, init->pitch[cmode]);
+ out_be32(&p->platinum_regs->reg[19].r, (p->total_vram == 0x100000 ?
+ init->mode[cmode+1] :
+ init->mode[cmode]));
+ out_be32(&p->platinum_regs->reg[20].r, (p->total_vram == 0x100000 ? 0x11 : 0x1011));
+ out_be32(&p->platinum_regs->reg[21].r, 0x100);
+ out_be32(&p->platinum_regs->reg[22].r, 1);
+ out_be32(&p->platinum_regs->reg[23].r, 1);
+ out_be32(&p->platinum_regs->reg[26].r, 0xc00);
+ out_be32(&p->platinum_regs->reg[27].r, 0x235);
+ /* out_be32(&p->platinum_regs->reg[27].r, 0x2aa); */
+
+ STORE_D2(0, (p->total_vram == 0x100000 ?
+ init->dacula_ctrl[cmode] & 0xf :
+ init->dacula_ctrl[cmode]));
+ STORE_D2(1, 4);
+ STORE_D2(2, 0);
+ /*
+ * Try to determine whether we have an old or a new DACula.
+ */
+ out_8(&p->cmap_regs->addr, 0x40);
+ dtype = in_8(&p->cmap_regs->d2);
+ switch (dtype) {
+ case 0x3c:
+ clkmode = 1;
+ break;
+ case 0x84:
+ clkmode = 0;
+ break;
+ default:
+ clkmode = 0;
+ printk("Unknown DACula type: %x\n", dtype);
+ }
+
+ set_platinum_clock(p, init->clock_params[clkmode]);
+
+ out_be32(&p->platinum_regs->reg[24].r, 0); /* turn display on */
+
+#ifdef CONFIG_FB_COMPAT_XPMAC
+ /* And let the world know the truth. */
+ if (!console_fb_info || console_fb_info == &p->info) {
+ display_info.height = p->var.yres;
+ display_info.width = p->var.xres;
+ display_info.depth = ( (cmode == CMODE_32) ? 32 :
+ ((cmode == CMODE_16) ? 16 : 8));
+ display_info.pitch = p->fix.line_length;
+ display_info.mode = vmode;
+ strncpy(display_info.name, "platinum",
+ sizeof(display_info.name));
+ display_info.fb_address = p->frame_buffer_phys
+ + init->fb_offset
+ + 0x10;
+ display_info.cmap_adr_address = p->cmap_regs_phys;
+ display_info.cmap_data_address = p->cmap_regs_phys + 0x30;
+ display_info.disp_reg_address = p->platinum_regs_phys;
+ console_fb_info = &p->info;
+ }
+#endif /* CONFIG_FB_COMPAT_XPMAC */
+}
+
+__initfunc(void platinum_init(void))
+{
+#ifndef CONFIG_FB_OF
+ struct device_node *dp;
+
+ dp = find_devices("platinum");
+ if (dp != 0)
+ platinum_of_init(dp);
+#endif /* CONFIG_FB_OF */
+}
+
+__initfunc(void platinum_of_init(struct device_node *dp))
+{
+ struct fb_info_platinum *p;
+ unsigned long addr, size;
+ int i, bank0, bank1, bank2, bank3;
+//FUNCID;
+ if(dp->n_addrs != 2)
+ panic("expecting 2 address for platinum (got %d)", dp->n_addrs);
+ p = kmalloc(sizeof(*p), GFP_ATOMIC);
+ if (p == 0)
+ return;
+
+ /* Map in frame buffer and registers */
+ for (i = 0; i < dp->n_addrs; ++i) {
+ addr = dp->addrs[i].address;
+ size = dp->addrs[i].size;
+ if (size >= 0x400000) {
+ /* frame buffer - map only 4MB */
+ p->frame_buffer_phys = addr;
+ p->frame_buffer = __ioremap(addr, 0x400000, _PAGE_WRITETHRU);
+ p->base_frame_buffer = p->frame_buffer;
+ } else {
+ /* registers */
+ p->platinum_regs_phys = addr;
+ p->platinum_regs = ioremap(addr, size);
+ }
+ }
+ p->cmap_regs_phys = 0xf301b000; /* XXX not in prom? */
+ p->cmap_regs = ioremap(p->cmap_regs_phys, 0x1000);
+
+ /* Grok total video ram */
+ out_be32(&p->platinum_regs->reg[16].r, (unsigned)p->frame_buffer_phys);
+ out_be32(&p->platinum_regs->reg[20].r, 0x1011); /* select max vram */
+ out_be32(&p->platinum_regs->reg[24].r, 0); /* switch in vram */
+ eieio();
+ p->frame_buffer[0x100000] = 0x34;
+ asm volatile("eieio; dcbi 0,%0" : : "r" (&p->frame_buffer[0x100000]) : "memory");
+ p->frame_buffer[0x200000] = 0x56;
+ asm volatile("eieio; dcbi 0,%0" : : "r" (&p->frame_buffer[0x200000]) : "memory");
+ p->frame_buffer[0x300000] = 0x78;
+ asm volatile("eieio; dcbi 0,%0" : : "r" (&p->frame_buffer[0x300000]) : "memory");
+ bank0 = 1; /* builtin 1MB vram, always there */
+ bank1 = p->frame_buffer[0x100000] == 0x34;
+ bank2 = p->frame_buffer[0x200000] == 0x56;
+ bank3 = p->frame_buffer[0x300000] == 0x78;
+ p->total_vram = (bank0 + bank1 + bank2 + bank3) * 0x100000;
+ printk("Total VRAM = %dMB\n", p->total_vram / 1024 / 1024);
+
+// p->frame_buffer = p->base_frame_buffer
+// + platinum_reg_init[p->par.vmode-1]->fb_offset;
+
+#ifdef CONFIG_FB_COMPAT_XPMAC
+#if 0
+ console_set_cmap_ptr = platinum_set_cmap;
+ console_setmode_ptr = platinum_console_setmode;
+#endif
+#endif /* CONFIG_FB_COMPAT_XPMAC */
+
+ init_platinum(p);
+}
+
+/*
+ * Get the monitor sense value.
+ * Note that this can be called before calibrate_delay,
+ * so we can't use udelay.
+ */
+static int read_platinum_sense(struct fb_info_platinum *p)
+{
+ int sense;
+
+ out_be32(&p->platinum_regs->reg[23].r, 7); /* turn off drivers */
+ __delay(2000);
+ sense = (~in_be32(&p->platinum_regs->reg[23].r) & 7) << 8;
+
+ /* drive each sense line low in turn and collect the other 2 */
+ out_be32(&p->platinum_regs->reg[23].r, 3); /* drive A low */
+ __delay(2000);
+ sense |= (~in_be32(&p->platinum_regs->reg[23].r) & 3) << 4;
+ out_be32(&p->platinum_regs->reg[23].r, 5); /* drive B low */
+ __delay(2000);
+ sense |= (~in_be32(&p->platinum_regs->reg[23].r) & 4) << 1;
+ sense |= (~in_be32(&p->platinum_regs->reg[23].r) & 1) << 2;
+ out_be32(&p->platinum_regs->reg[23].r, 6); /* drive C low */
+ __delay(2000);
+ sense |= (~in_be32(&p->platinum_regs->reg[23].r) & 6) >> 1;
+
+ out_be32(&p->platinum_regs->reg[23].r, 7); /* turn off drivers */
+
+ return sense;
+}
+
+#if 0
+/* This routine takes a user-supplied var, and picks the best vmode/cmode from it. */
+static int platinum_var_to_par(struct fb_var_screeninfo *var,
+ struct fb_par_platinum *par, const struct fb_info *fb_info)
+{
+ int xres = var->xres;
+ int yres = var->yres;
+ int bpp = var->bits_per_pixel;
+
+ struct platinum_regvals *init;
+ struct fb_info_platinum *p = (struct fb_info_platinum *) fb_info;
+
+// FUNCID;
+ /*
+ * Get the video params out of 'var'. If a value doesn't fit, round it up,
+ * if it's too big, return -EINVAL.
+ *
+ * Suggestion: Round up in the following order: bits_per_pixel, xres,
+ * yres, xres_virtual, yres_virtual, xoffset, yoffset, grayscale,
+ * bitfields, horizontal timing, vertical timing.
+ */
+ /* swiped by jonh from atyfb.c */
+ if (xres <= 512 && yres <= 384)
+ par->vmode = VMODE_512_384_60; /* 512x384, 60Hz */
+ else if (xres <= 640 && yres <= 480)
+ par->vmode = VMODE_640_480_67; /* 640x480, 67Hz */
+ else if (xres <= 640 && yres <= 870)
+ par->vmode = VMODE_640_870_75P; /* 640x870, 75Hz (portrait) */
+ else if (xres <= 768 && yres <= 576)
+ par->vmode = VMODE_768_576_50I; /* 768x576, 50Hz (PAL full frame) */
+ else if (xres <= 800 && yres <= 600)
+ par->vmode = VMODE_800_600_75; /* 800x600, 75Hz */
+ else if (xres <= 832 && yres <= 624)
+ par->vmode = VMODE_832_624_75; /* 832x624, 75Hz */
+ else if (xres <= 1024 && yres <= 768)
+ par->vmode = VMODE_1024_768_75; /* 1024x768, 75Hz */
+ else if (xres <= 1152 && yres <= 870)
+ par->vmode = VMODE_1152_870_75; /* 1152x870, 75Hz */
+ else if (xres <= 1280 && yres <= 960)
+ par->vmode = VMODE_1280_960_75; /* 1280x960, 75Hz */
+ else if (xres <= 1280 && yres <= 1024)
+ par->vmode = VMODE_1280_1024_75; /* 1280x1024, 75Hz */
+ else {
+ printk(KERN_ERR "Bad resolution in platinum_var_to_par()!\n");
+ return -EINVAL;
+ }
+ xres = vmode_attrs[par->vmode - 1].hres;
+ yres = vmode_attrs[par->vmode - 1].vres;
+
+/*
+ if (var->xres_virtual <= xres)
+ par->vxres = xres;
+ else
+ par->vxres = (var->xres_virtual+7) & ~7;
+ if (var->yres_virtual <= yres)
+ par->vyres = yres;
+ else
+ par->vyres = var->yres_virtual;
+
+ par->xoffset = (var->xoffset+7) & ~7;
+ par->yoffset = var->yoffset;
+ if (par->xoffset+xres > par->vxres || par->yoffset+yres > par->vyres)
+ return -EINVAL;
+*/
+
+ /* I'm too chicken to think about virtual */
+ /* resolutions just yet. Bok bok. */
+
+ /* And I'm too chicken to even figure out what they are. Awk awk. [danj] */
+ if (var->xres_virtual > xres || var->yres_virtual > yres
+ || var->xoffset != 0 || var->yoffset != 0) {
+ printk(KERN_ERR "Bad virtual resolution in platinum_var_to_par()!\n");
+ return -EINVAL;
+ }
+
+ par->xres = xres;
+ par->yres = yres;
+ par->vxres = xres;
+ par->vyres = yres;
+ par->xoffset = 0;
+ par->yoffset = 0;
+
+ if (bpp <= 8)
+ par->cmode = CMODE_8;
+ else if (bpp <= 16)
+ par->cmode = CMODE_16;
+ else if (bpp <= 32)
+ par->cmode = CMODE_32;
+ else {
+ printk(KERN_ERR "Bad color mode in platinum_var_to_par()!\n");
+ return -EINVAL;
+ }
+
+ if (platinum_vram_reqd(par->vmode, par->cmode) > p->total_vram) {
+ printk(KERN_ERR "Bad vram size requested in platinum_var_to_par()!\n");
+ return -EINVAL;
+ }
+ /* Check if we know about the wanted video mode */
+ init = platinum_reg_init[par->vmode-1];
+ if (init == NULL) {
+ /* I'm not sure if platinum has any specific requirements -- */
+ /* if we have a regvals struct, we're good to go? */
+ printk(KERN_ERR "platinum_reg_init failed platinum_var_to_par()!\n");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+#else
+/* This routine takes a user-supplied var, and picks the best vmode/cmode from it. */
+static int platinum_var_to_par(struct fb_var_screeninfo *var,
+ struct fb_par_platinum *par, const struct fb_info *fb_info)
+{
+ struct fb_info_platinum *p = (struct fb_info_platinum *) fb_info;
+
+// FUNCID;
+ if(mac_var_to_vmode(var, &par->vmode, &par->cmode) != 0)
+ return -EINVAL;
+ par->xres = par->vxres = vmode_attrs[par->vmode - 1].hres;
+ par->yres = par->vyres = vmode_attrs[par->vmode - 1].vres;
+ par->xoffset = par->yoffset = 0;
+
+ if (platinum_vram_reqd(par->vmode, par->cmode) > p->total_vram)
+ return -EINVAL;
+
+ /* Check if we know about the wanted video mode */
+ if(!platinum_reg_init[par->vmode-1]) {
+ /* I'm not sure if platinum has any specific requirements -- */
+ /* if we have a regvals struct, we're good to go? */
+ return -EINVAL;
+ }
+ return 0;
+}
+#endif
+
+#if 0
+static void platinum_par_to_var(struct fb_par_platinum *par, struct fb_var_screeninfo *var)
+{
+ memset(var, 0, sizeof(*var));
+ var->xres = vmode_attrs[par->vmode - 1].hres;
+ var->yres = vmode_attrs[par->vmode - 1].vres;
+ var->xres_virtual = var->xres;
+ var->yres_virtual = var->yres; /* For now. */
+ var->xoffset = par->xoffset;
+ var->yoffset = par->yoffset;
+ var->grayscale = 0;
+
+ if(par->cmode != CMODE_8 && par->cmode != CMODE_16 && par->cmode != CMODE_32) {
+ printk(KERN_ERR "Bad color mode in platinum_par_to_var()!\n");
+ par->cmode = CMODE_8;
+ }
+ switch(par->cmode) {
+ case CMODE_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 CMODE_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 CMODE_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 = 0;
+ var->green.msb_right = 0;
+ var->blue.msb_right = 0;
+ var->transp.msb_right = 0;
+ var->nonstd = 0;
+ var->activate = 0;
+ var->height = -1;
+ var->width = -1;
+ var->vmode = FB_VMODE_NONINTERLACED;
+
+ /* these are total guesses, copied right out of atyfb.c */
+ var->left_margin = var->right_margin = 64;
+ var->upper_margin = var->lower_margin = 32;
+ var->hsync_len = 8;
+ var->vsync_len = 8;
+ var->sync = 0;
+
+#if 1
+/* jonh's pixclocks...*/
+ /* no long long support in the kernel :-( */
+ /* this splittig trick will work if xres > 232 */
+ var->pixclock = 1000000000/
+ (var->left_margin+var->xres+var->right_margin+var->hsync_len);
+ var->pixclock *= 1000;
+ var->pixclock /= vmode_attrs[par->vmode-1].vfreq*
+ (var->upper_margin+var->yres+var->lower_margin+var->vsync_len);
+#else
+/* danj's */
+ /* 10^12 * clock_params[0] / (3906400 * clock_params[1] * 2^clock_params[2]) */
+ /* (10^12 * clock_params[0] / (3906400 * clock_params[1])) >> clock_params[2] */
+ /* (255990.17 * clock_params[0] / clock_params[1]) >> clock_params[2] */
+ var->pixclock = 255990 * platinum_reg_init[par->vmode-1]->clock_params[0];
+ var->pixclock /= platinum_reg_init[par->vmode-1]->clock_params[1];
+ var->pixclock >>= platinum_reg_init[par->vmode-1]->clock_params[2];
+#endif
+}
+#else
+static inline void platinum_par_to_var(struct fb_par_platinum *par, struct fb_var_screeninfo *var)
+{
+// FUNCID;
+ mac_vmode_to_var(par->vmode, par->cmode, var);
+}
+#endif
+
+static void platinum_init_fix(struct fb_fix_screeninfo *fix, struct fb_info_platinum *p)
+{
+// FUNCID;
+ memset(fix, 0, sizeof(*fix));
+ strcpy(fix->id, "platinum");
+ fix->mmio_start = (char *)p->platinum_regs_phys;
+ fix->mmio_len = 0x1000;
+ fix->type = FB_TYPE_PACKED_PIXELS;
+
+ fix->type_aux = 0;
+ fix->ywrapstep = 0;
+ fix->xpanstep = 0;
+ fix->ypanstep = 0;
+}
+
+/* Fix must already be inited ^^^^^^^ */
+static void platinum_par_to_fix(struct fb_par_platinum *par,
+ struct fb_fix_screeninfo *fix,
+ struct fb_info_platinum *p)
+{
+// FUNCID;
+ fix->smem_start = (void *)(p->frame_buffer_phys);
+ fix->smem_len = platinum_vram_reqd(par->vmode, par->cmode);
+ /* Hmm, jonh used total_vram here. */
+ fix->visual = (par->cmode == CMODE_8) ?
+ FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_DIRECTCOLOR;
+// fix->line_length = par->vxres << par->cmode;
+ fix->line_length = platinum_reg_init[par->vmode-1]->pitch[par->cmode];
+
+}
+
+static void platinum_init_display(struct display *disp)
+{
+ memset(disp, 0, sizeof(*disp));
+ disp->type = /* fix->type */ FB_TYPE_PACKED_PIXELS;
+ disp->can_soft_blank = 1;
+ disp->scrollmode = SCROLL_YREDRAW;
+#if 0
+ disp->type_aux = fix->type_aux;
+ disp->cmap.red = NULL; /* ??? danj */
+ disp->cmap.green = NULL;
+ disp->cmap.blue = NULL;
+ disp->cmap.transp = NULL;
+ /* Yeah, I realize I just set 0 = 0. */
+#endif
+}
+
+static void platinum_par_to_display(struct fb_par_platinum *par,
+ struct display *disp, struct fb_fix_screeninfo *fix, struct fb_info_platinum *p)
+{
+// FUNCID;
+ disp->var = p->var;
+ disp->screen_base = (char *) p->frame_buffer
+ + platinum_reg_init[par->vmode-1]->fb_offset
+ + ((par->yres % 16) / 2) * fix->line_length + 0x10;
+ disp->visual = fix->visual;
+ disp->line_length = fix->line_length;
+
+ if(disp->scrollmode != SCROLL_YREDRAW) {
+ printk(KERN_ERR "Scroll mode not YREDRAW in platinum_par_to_display!!\n");
+ disp->scrollmode = SCROLL_YREDRAW;
+ }
+
+ switch(par->cmode) {
+#ifdef FBCON_HAS_CFB8
+ case CMODE_8:
+ disp->dispsw = &fbcon_cfb8;
+ break;
+#endif
+#ifdef FBCON_HAS_CFB16
+ case CMODE_16:
+ disp->dispsw = &fbcon_cfb16;
+ break;
+#endif
+#ifdef FBCON_HAS_CFB32
+ case CMODE_32:
+ disp->dispsw = &fbcon_cfb32;
+ break;
+#endif
+ default:
+ disp->dispsw = NULL;
+ break;
+ }
+}
+
+static void platinum_init_info(struct fb_info *info, struct fb_info_platinum *p)
+{
+// FUNCID;
+ strcpy(info->modename, p->fix.id);
+ info->node = -1; /* ??? danj */
+ info->fbops = &platinumfb_ops;
+ info->disp = &p->disp;
+ info->fontname[0] = 0;
+ info->changevar = NULL;
+ info->switch_con = &platinum_switch;
+ info->updatevar = &platinum_updatevar;
+ info->blank = &platinum_blank;
+}
+
+/* danj: Oh, I HOPE I didn't miss anything major in here... */
+static void platinum_par_to_all(struct fb_info_platinum *p, int init)
+{
+// FUNCID;
+ if(init) {
+ platinum_init_fix(&p->fix, p);
+ }
+ platinum_par_to_fix(&p->par, &p->fix, p);
+
+ platinum_par_to_var(&p->par, &p->var);
+
+ if(init) {
+ platinum_init_display(&p->disp);
+ }
+ platinum_par_to_display(&p->par, &p->disp, &p->fix, p);
+
+ if(init) {
+ platinum_init_info(&p->info, p);
+ }
+}
+
+#if 0
+__initfunc(void platinum_setup(char *options, int *ints))
+{
+ /* Parse user speficied options (`video=platinumfb:') */
+ FUNCID;
+}
+
+#endif
+
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