[PATCH] ps3: Virtual Frame Buffer Driver

Add the PS3 Virtual Frame Buffer Driver.

As the actual graphics hardware cannot be accessed directly by Linux, ps3fb
uses a virtual frame buffer in main memory.  The actual screen image is copied
to graphics memory by the GPU on every vertical blank, by making a hypervisor
call.

Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Cc: James Simmons <jsimmons@infradead.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 1229 insertions, 0 deletions

diff --git a/drivers/video/ps3fb.c b/drivers/video/ps3fb.c
new file mode 100644
index 00000000000..81e43cda7d8
--- /dev/null
+++ b/drivers/video/ps3fb.c
@@ -0,0 +1,1229 @@
+/*
+ *  linux/drivers/video/ps3fb.c -- PS3 GPU frame buffer device
+ *
+ *	Copyright (C) 2006 Sony Computer Entertainment Inc.
+ *	Copyright 2006, 2007 Sony Corporation
+ *
+ *  This file is based on :
+ *
+ *  linux/drivers/video/vfb.c -- Virtual frame buffer device
+ *
+ *	Copyright (C) 2002 James Simmons
+ *
+ *	Copyright (C) 1997 Geert Uytterhoeven
+ *
+ *  This file is subject to the terms and conditions of the GNU General Public
+ *  License. See the file COPYING in the main directory of this archive for
+ *  more details.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/tty.h>
+#include <linux/slab.h>
+#include <linux/vmalloc.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/console.h>
+#include <linux/ioctl.h>
+#include <linux/notifier.h>
+#include <linux/reboot.h>
+
+#include <asm/uaccess.h>
+#include <linux/fb.h>
+#include <linux/init.h>
+#include <asm/time.h>
+
+#include <asm/abs_addr.h>
+#include <asm/lv1call.h>
+#include <asm/ps3av.h>
+#include <asm/ps3fb.h>
+#include <asm/ps3.h>
+
+#ifdef PS3FB_DEBUG
+#define DPRINTK(fmt, args...) printk("%s: " fmt, __FUNCTION__ , ##args)
+#else
+#define DPRINTK(fmt, args...)
+#endif
+
+#define L1GPU_CONTEXT_ATTRIBUTE_DISPLAY_SYNC	0x101
+#define L1GPU_CONTEXT_ATTRIBUTE_DISPLAY_FLIP	0x102
+#define L1GPU_CONTEXT_ATTRIBUTE_FB_SETUP	0x600
+#define L1GPU_CONTEXT_ATTRIBUTE_FB_BLIT		0x601
+#define L1GPU_CONTEXT_ATTRIBUTE_FB_BLIT_SYNC	0x602
+
+#define L1GPU_FB_BLIT_WAIT_FOR_COMPLETION	(1ULL << 32)
+
+#define L1GPU_DISPLAY_SYNC_HSYNC		1
+#define L1GPU_DISPLAY_SYNC_VSYNC		2
+
+#define DDR_SIZE				(0)	/* used no ddr */
+#define GPU_OFFSET				(64 * 1024)
+#define GPU_IOIF				(0x0d000000UL)
+
+#define PS3FB_FULL_MODE_BIT			0x80
+
+#define GPU_INTR_STATUS_VSYNC_0			0	/* vsync on head A */
+#define GPU_INTR_STATUS_VSYNC_1			1	/* vsync on head B */
+#define GPU_INTR_STATUS_FLIP_0			3	/* flip head A */
+#define GPU_INTR_STATUS_FLIP_1			4	/* flip head B */
+#define GPU_INTR_STATUS_QUEUE_0			5	/* queue head A */
+#define GPU_INTR_STATUS_QUEUE_1			6	/* queue head B */
+
+#define GPU_DRIVER_INFO_VERSION			0x211
+
+/* gpu internals */
+struct display_head {
+	u64 be_time_stamp;
+	u32 status;
+	u32 offset;
+	u32 res1;
+	u32 res2;
+	u32 field;
+	u32 reserved1;
+
+	u64 res3;
+	u32 raster;
+
+	u64 vblank_count;
+	u32 field_vsync;
+	u32 reserved2;
+};
+
+struct gpu_irq {
+	u32 irq_outlet;
+	u32 status;
+	u32 mask;
+	u32 video_cause;
+	u32 graph_cause;
+	u32 user_cause;
+
+	u32 res1;
+	u64 res2;
+
+	u32 reserved[4];
+};
+
+struct gpu_driver_info {
+	u32 version_driver;
+	u32 version_gpu;
+	u32 memory_size;
+	u32 hardware_channel;
+
+	u32 nvcore_frequency;
+	u32 memory_frequency;
+
+	u32 reserved[1063];
+	struct display_head display_head[8];
+	struct gpu_irq irq;
+};
+
+struct ps3fb_priv {
+	unsigned int irq_no;
+	void *dev;
+
+	u64 context_handle, memory_handle;
+	void *xdr_ea;
+	struct gpu_driver_info *dinfo;
+	struct semaphore sem;
+	u32 res_index;
+
+	u64 vblank_count;	/* frame count */
+	wait_queue_head_t wait_vsync;
+
+	u32 num_frames;		/* num of frame buffers */
+	atomic_t ext_flip;	/* on/off flip with vsync */
+	atomic_t f_count;	/* fb_open count */
+	int is_blanked;
+};
+static struct ps3fb_priv ps3fb;
+
+struct ps3fb_res_table {
+	u32 xres;
+	u32 yres;
+	u32 xoff;
+	u32 yoff;
+	u32 type;
+};
+#define PS3FB_RES_FULL 1
+static const struct ps3fb_res_table ps3fb_res[] = {
+	/* res_x,y   margin_x,y  full */
+	{  720,  480,  72,  48 , 0},
+	{  720,  576,  72,  58 , 0},
+	{ 1280,  720,  78,  38 , 0},
+	{ 1920, 1080, 116,  58 , 0},
+	/* full mode */
+	{  720,  480,   0,   0 , PS3FB_RES_FULL},
+	{  720,  576,   0,   0 , PS3FB_RES_FULL},
+	{ 1280,  720,   0,   0 , PS3FB_RES_FULL},
+	{ 1920, 1080,   0,   0 , PS3FB_RES_FULL},
+	/* vesa: normally full mode */
+	{ 1280,  768,   0,   0 , 0},
+	{ 1280, 1024,   0,   0 , 0},
+	{ 1920, 1200,   0,   0 , 0},
+	{    0,    0,   0,   0 , 0} };
+
+/* default resolution */
+#define GPU_RES_INDEX 0		/* 720 x 480 */
+
+static const struct fb_videomode ps3fb_modedb[] = {
+    /* 60 Hz broadcast modes (modes "1" to "5") */
+    {
+        /* 480i */
+        "480i", 60, 576, 384, 74074, 130, 89, 78, 57, 63, 6,
+        FB_SYNC_BROADCAST, FB_VMODE_INTERLACED
+    },    {
+        /* 480p */
+        "480p", 60, 576, 384, 37037, 130, 89, 78, 57, 63, 6,
+        FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED
+    },    {
+        /* 720p */
+        "720p", 60, 1124, 644, 13481, 298, 148, 57, 44, 80, 5,
+        FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED
+    },    {
+        /* 1080i */
+        "1080i", 60, 1688, 964, 13481, 264, 160, 94, 62, 88, 5,
+        FB_SYNC_BROADCAST, FB_VMODE_INTERLACED
+    },    {
+        /* 1080p */
+        "1080p", 60, 1688, 964, 6741, 264, 160, 94, 62, 88, 5,
+        FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED
+    },
+
+    /* 50 Hz broadcast modes (modes "6" to "10") */
+    {
+        /* 576i */
+        "576i", 50, 576, 460, 74074, 142, 83, 97, 63, 63, 5,
+        FB_SYNC_BROADCAST, FB_VMODE_INTERLACED
+    },    {
+        /* 576p */
+        "576p", 50, 576, 460, 37037, 142, 83, 97, 63, 63, 5,
+        FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED
+    },    {
+        /* 720p */
+        "720p", 50, 1124, 644, 13468, 298, 478, 57, 44, 80, 5,
+        FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED
+    },    {
+        /* 1080 */
+        "1080i", 50, 1688, 964, 13468, 264, 600, 94, 62, 88, 5,
+        FB_SYNC_BROADCAST, FB_VMODE_INTERLACED
+    },    {
+        /* 1080p */
+        "1080p", 50, 1688, 964, 6734, 264, 600, 94, 62, 88, 5,
+        FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED
+    },
+
+    /* VESA modes (modes "11" to "13") */
+    {
+	/* WXGA */
+	"wxga", 60, 1280, 768, 12924, 160, 24, 29, 3, 136, 6,
+	0, FB_VMODE_NONINTERLACED,
+	FB_MODE_IS_VESA
+    }, {
+	/* SXGA */
+	"sxga", 60, 1280, 1024, 9259, 248, 48, 38, 1, 112, 3,
+	FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED,
+	FB_MODE_IS_VESA
+    }, {
+	/* WUXGA */
+	"wuxga", 60, 1920, 1200, 6494, 80, 48, 26, 3, 32, 6,
+	FB_SYNC_HOR_HIGH_ACT, FB_VMODE_NONINTERLACED,
+	FB_MODE_IS_VESA
+    },
+
+    /* 60 Hz broadcast modes (full resolution versions of modes "1" to "5") */
+    {
+	/* 480if */
+	"480if", 60, 720, 480, 74074, 58, 17, 30, 9, 63, 6,
+	FB_SYNC_BROADCAST, FB_VMODE_INTERLACED
+    }, {
+	/* 480pf */
+	"480pf", 60, 720, 480, 37037, 58, 17, 30, 9, 63, 6,
+	FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED
+    }, {
+	/* 720pf */
+	"720pf", 60, 1280, 720, 13481, 220, 70, 19, 6, 80, 5,
+	FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED
+    }, {
+	/* 1080if */
+	"1080if", 60, 1920, 1080, 13481, 148, 44, 36, 4, 88, 5,
+	FB_SYNC_BROADCAST, FB_VMODE_INTERLACED
+    }, {
+	/* 1080pf */
+	"1080pf", 60, 1920, 1080, 6741, 148, 44, 36, 4, 88, 5,
+	FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED
+    },
+
+    /* 50 Hz broadcast modes (full resolution versions of modes "6" to "10") */
+    {
+	/* 576if */
+	"576if", 50, 720, 576, 74074, 70, 11, 39, 5, 63, 5,
+	FB_SYNC_BROADCAST, FB_VMODE_INTERLACED
+    }, {
+	/* 576pf */
+	"576pf", 50, 720, 576, 37037, 70, 11, 39, 5, 63, 5,
+	FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED
+    }, {
+	/* 720pf */
+	"720pf", 50, 1280, 720, 13468, 220, 400, 19, 6, 80, 5,
+	FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED
+    }, {
+	/* 1080if */
+	"1080f", 50, 1920, 1080, 13468, 148, 484, 36, 4, 88, 5,
+	FB_SYNC_BROADCAST, FB_VMODE_INTERLACED
+    }, {
+	/* 1080pf */
+	"1080pf", 50, 1920, 1080, 6734, 148, 484, 36, 4, 88, 5,
+	FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED
+    }
+};
+
+
+#define HEAD_A
+#define HEAD_B
+
+#define X_OFF(i)	(ps3fb_res[i].xoff)	/* left/right margin (pixel) */
+#define Y_OFF(i)	(ps3fb_res[i].yoff)	/* top/bottom margin (pixel) */
+#define WIDTH(i)	(ps3fb_res[i].xres)	/* width of FB */
+#define HEIGHT(i)	(ps3fb_res[i].yres)	/* height of FB */
+#define BPP	4		/* number of bytes per pixel */
+#define VP_OFF(i)	(WIDTH(i) * Y_OFF(i) * BPP + X_OFF(i) * BPP)
+#define FB_OFF(i)	(GPU_OFFSET - VP_OFF(i) % GPU_OFFSET)
+
+static int ps3fb_mode = 0;
+module_param(ps3fb_mode, bool, 0);
+
+static char *mode_option __initdata = NULL;
+
+
+static int ps3fb_get_res_table(u32 xres, u32 yres)
+{
+	int full_mode;
+	unsigned int i;
+	u32 x, y, f;
+
+	full_mode = (ps3fb_mode & PS3FB_FULL_MODE_BIT) ? PS3FB_RES_FULL : 0;
+	for (i = 0;; i++) {
+		x = ps3fb_res[i].xres;
+		y = ps3fb_res[i].yres;
+		f = ps3fb_res[i].type;
+
+		if (!x) {
+			DPRINTK("ERROR: ps3fb_get_res_table()\n");
+			return -1;
+		}
+
+		if (full_mode == PS3FB_RES_FULL && f != PS3FB_RES_FULL)
+			continue;
+
+		if (x == xres && (yres == 0 || y == yres))
+			break;
+
+		x = x - 2 * ps3fb_res[i].xoff;
+		y = y - 2 * ps3fb_res[i].yoff;
+		if (x == xres && (yres == 0 || y == yres))
+			break;
+	}
+	return i;
+}
+
+static unsigned int ps3fb_find_mode(const struct fb_var_screeninfo *var,
+				    u32 *line_length)
+{
+	unsigned int i, mode;
+
+	for (i = 0; i < ARRAY_SIZE(ps3fb_modedb); i++)
+		if (var->xres == ps3fb_modedb[i].xres &&
+		    var->yres == ps3fb_modedb[i].yres &&
+		    var->pixclock == ps3fb_modedb[i].pixclock &&
+		    var->hsync_len == ps3fb_modedb[i].hsync_len &&
+		    var->vsync_len == ps3fb_modedb[i].vsync_len &&
+		    var->left_margin == ps3fb_modedb[i].left_margin &&
+		    var->right_margin == ps3fb_modedb[i].right_margin &&
+		    var->upper_margin == ps3fb_modedb[i].upper_margin &&
+		    var->lower_margin == ps3fb_modedb[i].lower_margin &&
+		    var->sync == ps3fb_modedb[i].sync &&
+		    (var->vmode & FB_VMODE_MASK) == ps3fb_modedb[i].vmode) {
+			/* Cropped broadcast modes use the full line_length */
+			*line_length =
+			    ps3fb_modedb[i < 10 ? i + 13 : i].xres * 4;
+			/* Full broadcast modes have the full mode bit set */
+			mode = i > 12 ? (i - 12) | PS3FB_FULL_MODE_BIT : i + 1;
+
+			DPRINTK("ps3fb_find_mode: mode %u\n", mode);
+			return mode;
+		}
+
+	DPRINTK("ps3fb_find_mode: mode not found\n");
+	return 0;
+
+}
+
+static const struct fb_videomode *ps3fb_default_mode(void)
+{
+	u32 mode = ps3fb_mode & PS3AV_MODE_MASK;
+	u32 flags;
+
+	if (mode < 1 || mode > 13)
+		return NULL;
+
+	flags = ps3fb_mode & ~PS3AV_MODE_MASK;
+
+	if (mode <= 10 && flags & PS3FB_FULL_MODE_BIT) {
+		/* Full broadcast mode */
+		return &ps3fb_modedb[mode + 12];
+	}
+
+	return &ps3fb_modedb[mode - 1];
+}
+
+static int ps3fb_sync(u32 frame)
+{
+	int i, status;
+	u32 xres, yres;
+	u64 fb_ioif, offset;
+
+	i = ps3fb.res_index;
+	xres = ps3fb_res[i].xres;
+	yres = ps3fb_res[i].yres;
+
+	if (frame > ps3fb.num_frames - 1) {
+		printk(KERN_WARNING "%s: invalid frame number (%u)\n",
+		       __FUNCTION__, frame);
+		return -EINVAL;
+	}
+	offset = xres * yres * BPP * frame;
+
+	fb_ioif = GPU_IOIF + FB_OFF(i) + offset;
+	status = lv1_gpu_context_attribute(ps3fb.context_handle,
+					   L1GPU_CONTEXT_ATTRIBUTE_FB_BLIT,
+					   offset, fb_ioif,
+					   L1GPU_FB_BLIT_WAIT_FOR_COMPLETION |
+					   (xres << 16) | yres,
+					   xres * BPP);	/* line_length */
+	if (status)
+		printk(KERN_ERR "%s: lv1_gpu_context_attribute FB_BLIT failed: %d\n",
+		       __FUNCTION__, status);
+#ifdef HEAD_A
+	status = lv1_gpu_context_attribute(ps3fb.context_handle,
+					   L1GPU_CONTEXT_ATTRIBUTE_DISPLAY_FLIP,
+					   0, offset, 0, 0);
+	if (status)
+		printk(KERN_ERR "%s: lv1_gpu_context_attribute FLIP failed: %d\n",
+		       __FUNCTION__, status);
+#endif
+#ifdef HEAD_B
+	status = lv1_gpu_context_attribute(ps3fb.context_handle,
+					   L1GPU_CONTEXT_ATTRIBUTE_DISPLAY_FLIP,
+					   1, offset, 0, 0);
+	if (status)
+		printk(KERN_ERR "%s: lv1_gpu_context_attribute FLIP failed: %d\n",
+		       __FUNCTION__, status);
+#endif
+	return 0;
+}
+
+
+static int ps3fb_open(struct fb_info *info, int user)
+{
+	atomic_inc(&ps3fb.f_count);
+	return 0;
+}
+
+static int ps3fb_release(struct fb_info *info, int user)
+{
+	if (atomic_dec_and_test(&ps3fb.f_count)) {
+		if (atomic_read(&ps3fb.ext_flip)) {
+			atomic_set(&ps3fb.ext_flip, 0);
+			ps3fb_sync(0);	/* single buffer */
+		}
+	}
+	return 0;
+}
+
+    /*
+     *  Setting the video mode has been split into two parts.
+     *  First part, xxxfb_check_var, must not write anything
+     *  to hardware, it should only verify and adjust var.
+     *  This means it doesn't alter par but it does use hardware
+     *  data from it to check this var.
+     */
+
+static int ps3fb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
+{
+	u32 line_length;
+	int mode;
+	int i;
+
+	DPRINTK("var->xres:%u info->var.xres:%u\n", var->xres, info->var.xres);
+	DPRINTK("var->yres:%u info->var.yres:%u\n", var->yres, info->var.yres);
+
+	/* FIXME For now we do exact matches only */
+	mode = ps3fb_find_mode(var, &line_length);
+	if (!mode)
+		return -EINVAL;
+
+	/*
+	 *  FB_VMODE_CONUPDATE and FB_VMODE_SMOOTH_XPAN are equal!
+	 *  as FB_VMODE_SMOOTH_XPAN is only used internally
+	 */
+
+	if (var->vmode & FB_VMODE_CONUPDATE) {
+		var->vmode |= FB_VMODE_YWRAP;
+		var->xoffset = info->var.xoffset;
+		var->yoffset = info->var.yoffset;
+	}
+
+	/* Virtual screen and panning are not supported */
+	if (var->xres_virtual > var->xres || var->yres_virtual > var->yres ||
+	    var->xoffset || var->yoffset) {
+		DPRINTK("Virtual screen and panning are not supported\n");
+		return -EINVAL;
+	}
+
+	var->xres_virtual = var->xres;
+	var->yres_virtual = var->yres;
+
+	/* We support ARGB8888 only */
+	if (var->bits_per_pixel > 32 || var->grayscale ||
+	    var->red.offset > 16 || var->green.offset > 8 ||
+	    var->blue.offset > 0 || var->transp.offset > 24 ||
+	    var->red.length > 8 || var->green.length > 8 ||
+	    var->blue.length > 8 || var->transp.length > 8 ||
+	    var->red.msb_right || var->green.msb_right ||
+	    var->blue.msb_right || var->transp.msb_right || var->nonstd) {
+		DPRINTK("We support ARGB8888 only\n");
+		return -EINVAL;
+	}
+
+	var->bits_per_pixel = 32;
+	var->red.offset = 16;
+	var->green.offset = 8;
+	var->blue.offset = 0;
+	var->transp.offset = 24;
+	var->red.length = 8;
+	var->green.length = 8;
+	var->blue.length = 8;
+	var->transp.length = 8;
+	var->red.msb_right = 0;
+	var->green.msb_right = 0;
+	var->blue.msb_right = 0;
+	var->transp.msb_right = 0;
+
+	/* Rotation is not supported */
+	if (var->rotate) {
+		DPRINTK("Rotation is not supported\n");
+		return -EINVAL;
+	}
+
+	/* Memory limit */
+	i = ps3fb_get_res_table(var->xres, var->yres);
+	if (ps3fb_res[i].xres*ps3fb_res[i].yres*BPP > ps3fb_videomemory.size) {
+		DPRINTK("Not enough memory\n");
+		return -ENOMEM;
+	}
+
+	var->height = -1;
+	var->width = -1;
+
+	return 0;
+}
+
+    /*
+     * This routine actually sets the video mode.
+     */
+
+static int ps3fb_set_par(struct fb_info *info)
+{
+	unsigned int mode;
+	int i;
+	unsigned long offset;
+	static int first = 1;
+
+	DPRINTK("xres:%d xv:%d yres:%d yv:%d clock:%d\n",
+		info->var.xres, info->var.xres_virtual,
+		info->var.yres, info->var.yres_virtual, info->var.pixclock);
+	i = ps3fb_get_res_table(info->var.xres, info->var.yres);
+	ps3fb.res_index = i;
+
+	mode = ps3fb_find_mode(&info->var, &info->fix.line_length);
+	if (!mode)
+		return -EINVAL;
+
+	offset = FB_OFF(i) + VP_OFF(i);
+	info->fix.smem_len = ps3fb_videomemory.size - offset;
+	info->screen_base = (char __iomem *)ps3fb.xdr_ea + offset;
+	memset(ps3fb.xdr_ea, 0, ps3fb_videomemory.size);
+
+	ps3fb.num_frames = ps3fb_videomemory.size/
+			   (ps3fb_res[i].xres*ps3fb_res[i].yres*BPP);
+
+	/* Keep the special bits we cannot set using fb_var_screeninfo */
+	ps3fb_mode = (ps3fb_mode & ~PS3AV_MODE_MASK) | mode;
+
+	if (ps3av_set_video_mode(ps3fb_mode, first))
+		return -EINVAL;
+
+	first = 0;
+	return 0;
+}
+
+    /*
+     *  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 ps3fb_setcolreg(unsigned int regno, unsigned int red,
+			   unsigned int green, unsigned int blue,
+			   unsigned int transp, struct fb_info *info)
+{
+	if (regno >= 16)
+		return 1;
+
+	red >>= 8;
+	green >>= 8;
+	blue >>= 8;
+	transp >>= 8;
+
+	((u32 *)info->pseudo_palette)[regno] = transp << 24 | red << 16 |
+					       green << 8 | blue;
+	return 0;
+}
+
+    /*
+     *  As we have a virtual frame buffer, we need our own mmap function
+     */
+
+static int ps3fb_mmap(struct fb_info *info, struct vm_area_struct *vma)
+{
+	unsigned long size, offset;
+	int i;
+
+	i = ps3fb_get_res_table(info->var.xres, info->var.yres);
+	if (i == -1)
+		return -EINVAL;
+
+	size = vma->vm_end - vma->vm_start;
+	offset = vma->vm_pgoff << PAGE_SHIFT;
+	if (offset + size > info->fix.smem_len)
+		return -EINVAL;
+
+	offset += info->fix.smem_start + FB_OFF(i) + VP_OFF(i);
+	if (remap_pfn_range(vma, vma->vm_start, offset >> PAGE_SHIFT,
+			    size, vma->vm_page_prot))
+		return -EAGAIN;
+
+	printk(KERN_DEBUG "ps3fb: mmap framebuffer P(%lx)->V(%lx)\n", offset,
+	       vma->vm_start);
+	return 0;
+}
+
+    /*
+     * Blank the display
+     */
+
+static int ps3fb_blank(int blank, struct fb_info *info)
+{
+	int retval;
+
+	DPRINTK("%s: blank:%d\n", __FUNCTION__, blank);
+	switch (blank) {
+	case FB_BLANK_POWERDOWN:
+	case FB_BLANK_HSYNC_SUSPEND:
+	case FB_BLANK_VSYNC_SUSPEND:
+	case FB_BLANK_NORMAL:
+		retval = ps3av_video_mute(1);	/* mute on */
+		if (!retval)
+			ps3fb.is_blanked = 1;
+		break;
+
+	default:		/* unblank */
+		retval = ps3av_video_mute(0);	/* mute off */
+		if (!retval)
+			ps3fb.is_blanked = 0;
+		break;
+	}
+	return retval;
+}
+
+static int ps3fb_get_vblank(struct fb_vblank *vblank)
+{
+	memset(vblank, 0, sizeof(&vblank));
+	vblank->flags = FB_VBLANK_HAVE_VSYNC;
+	return 0;
+}
+
+int ps3fb_wait_for_vsync(u32 crtc)
+{
+	int ret;
+	u64 count;
+
+	count = ps3fb.vblank_count;
+	ret = wait_event_interruptible_timeout(ps3fb.wait_vsync,
+					       count != ps3fb.vblank_count,
+					       HZ / 10);
+	if (!ret)
+		return -ETIMEDOUT;
+
+	return 0;
+}
+
+EXPORT_SYMBOL_GPL(ps3fb_wait_for_vsync);
+
+void ps3fb_flip_ctl(int on)
+{
+	if (on) {
+		if (atomic_read(&ps3fb.ext_flip) > 0) {
+			atomic_dec(&ps3fb.ext_flip);
+		}
+	} else {
+		atomic_inc(&ps3fb.ext_flip);
+	}
+}
+
+EXPORT_SYMBOL_GPL(ps3fb_flip_ctl);
+
+    /*
+     * ioctl
+     */
+
+static int ps3fb_ioctl(struct fb_info *info, unsigned int cmd,
+		       unsigned long arg)
+{
+	void __user *argp = (void __user *)arg;
+	u32 val, old_mode;
+	int retval = -EFAULT;
+
+	switch (cmd) {
+	case FBIOGET_VBLANK:
+		{
+			struct fb_vblank vblank;
+			DPRINTK("FBIOGET_VBLANK:\n");
+			retval = ps3fb_get_vblank(&vblank);
+			if (retval)
+				break;
+
+			if (copy_to_user(argp, &vblank, sizeof(vblank)))
+				retval = -EFAULT;
+			break;
+		}
+
+	case FBIO_WAITFORVSYNC:
+		{
+			u32 crt;
+			DPRINTK("FBIO_WAITFORVSYNC:\n");
+			if (get_user(crt, (u32 __user *) arg))
+				break;
+
+			retval = ps3fb_wait_for_vsync(crt);
+			break;
+		}
+
+	case PS3FB_IOCTL_SETMODE:
+		{
+			const struct fb_videomode *mode;
+			struct fb_var_screeninfo var;
+
+			if (copy_from_user(&val, argp, sizeof(val)))
+				break;
+
+			DPRINTK("PS3FB_IOCTL_SETMODE:%x\n", val);
+			retval = -EINVAL;
+			old_mode = ps3fb_mode;
+			ps3fb_mode = val;
+			mode = ps3fb_default_mode();
+			if (mode) {
+				var = info->var;
+				fb_videomode_to_var(&var, mode);
+				acquire_console_sem();
+				info->flags |= FBINFO_MISC_USEREVENT;
+				/* Force, in case only special bits changed */
+				var.activate |= FB_ACTIVATE_FORCE;
+				retval = fb_set_var(info, &var);
+				info->flags &= ~FBINFO_MISC_USEREVENT;
+				release_console_sem();
+			}
+			if (retval)
+				ps3fb_mode = old_mode;
+			break;
+		}
+
+	case PS3FB_IOCTL_GETMODE:
+		val = ps3av_get_mode();
+		DPRINTK("PS3FB_IOCTL_GETMODE:%x\n", val);
+		if (!copy_to_user(argp, &val, sizeof(val)))
+			retval = 0;
+		break;
+
+	case PS3FB_IOCTL_SCREENINFO:
+		{
+			struct ps3fb_ioctl_res res;
+			int i = ps3fb.res_index;
+			DPRINTK("PS3FB_IOCTL_SCREENINFO:\n");
+			res.xres = ps3fb_res[i].xres;
+			res.yres = ps3fb_res[i].yres;
+			res.xoff = ps3fb_res[i].xoff;
+			res.yoff = ps3fb_res[i].yoff;
+			res.num_frames = ps3fb.num_frames;
+			if (!copy_to_user(argp, &res, sizeof(res)))
+				retval = 0;
+			break;
+		}
+
+	case PS3FB_IOCTL_ON:
+		DPRINTK("PS3FB_IOCTL_ON:\n");
+		atomic_inc(&ps3fb.ext_flip);
+		retval = 0;
+		break;
+
+	case PS3FB_IOCTL_OFF:
+		DPRINTK("PS3FB_IOCTL_OFF:\n");
+		if (atomic_read(&ps3fb.ext_flip) > 0)
+			atomic_dec(&ps3fb.ext_flip);
+		retval = 0;
+		break;
+
+	case PS3FB_IOCTL_FSEL:
+		if (copy_from_user(&val, argp, sizeof(val)))
+			break;
+
+		DPRINTK("PS3FB_IOCTL_FSEL:%d\n", val);
+		retval = ps3fb_sync(val);
+		break;
+
+	default:
+		retval = -ENOIOCTLCMD;
+		break;
+	}
+	return retval;
+}
+
+static int ps3fbd(void *arg)
+{
+	daemonize("ps3fbd");
+	for (;;) {
+		down(&ps3fb.sem);
+		if (atomic_read(&ps3fb.ext_flip) == 0)
+			ps3fb_sync(0);	/* single buffer */
+	}
+	return 0;
+}
+
+static irqreturn_t ps3fb_vsync_interrupt(int irq, void *ptr)
+{
+	u64 v1;
+	int status;
+	struct display_head *head = &ps3fb.dinfo->display_head[1];
+
+	status = lv1_gpu_context_intr(ps3fb.context_handle, &v1);
+	if (status) {
+		printk(KERN_ERR "%s: lv1_gpu_context_intr failed: %d\n",
+		       __FUNCTION__, status);
+		return IRQ_NONE;
+	}
+
+	if (v1 & (1 << GPU_INTR_STATUS_VSYNC_1)) {
+		/* VSYNC */
+		ps3fb.vblank_count = head->vblank_count;
+		if (!ps3fb.is_blanked)
+			up(&ps3fb.sem);
+		wake_up_interruptible(&ps3fb.wait_vsync);
+	}
+
+	return IRQ_HANDLED;
+}
+
+#ifndef MODULE
+static int __init ps3fb_setup(char *options)
+{
+	char *this_opt;
+	int mode = 0;
+
+	if (!options || !*options)
+		return 0;	/* no options */
+
+	while ((this_opt = strsep(&options, ",")) != NULL) {
+		if (!*this_opt)
+			continue;
+		if (!strncmp(this_opt, "mode:", 5))
+			mode = simple_strtoul(this_opt + 5, NULL, 0);
+		else
+			mode_option = this_opt;
+	}
+	return mode;
+}
+#endif	/* MODULE */
+
+    /*
+     *  Initialisation
+     */
+
+static void ps3fb_platform_release(struct device *device)
+{
+	/* This is called when the reference count goes to zero. */
+}
+
+static int ps3fb_vsync_settings(struct gpu_driver_info *dinfo, void *dev)
+{
+	int error;
+
+	DPRINTK("version_driver:%x\n", dinfo->version_driver);
+	DPRINTK("irq outlet:%x\n", dinfo->irq.irq_outlet);
+	DPRINTK("version_gpu:%x memory_size:%x ch:%x core_freq:%d mem_freq:%d\n",
+		dinfo->version_gpu, dinfo->memory_size, dinfo->hardware_channel,
+		dinfo->nvcore_frequency/1000000, dinfo->memory_frequency/1000000);
+
+	if (dinfo->version_driver != GPU_DRIVER_INFO_VERSION) {
+		printk(KERN_ERR "%s: version_driver err:%x\n", __FUNCTION__,
+		       dinfo->version_driver);
+		return -EINVAL;
+	}
+
+	ps3fb.dev = dev;
+	error = ps3_alloc_irq(PS3_BINDING_CPU_ANY, dinfo->irq.irq_outlet,
+			      &ps3fb.irq_no);
+	if (error) {
+		printk(KERN_ERR "%s: ps3_alloc_irq failed %d\n", __FUNCTION__,
+		       error);
+		return error;
+	}
+
+	error = request_irq(ps3fb.irq_no, ps3fb_vsync_interrupt, IRQF_DISABLED,
+			    "ps3fb vsync", ps3fb.dev);
+	if (error) {
+		printk(KERN_ERR "%s: request_irq failed %d\n", __FUNCTION__,
+		       error);
+		ps3_free_irq(ps3fb.irq_no);
+		return error;
+	}
+
+	dinfo->irq.mask = (1 << GPU_INTR_STATUS_VSYNC_1) |
+			  (1 << GPU_INTR_STATUS_FLIP_1);
+	return 0;
+}
+
+static int ps3fb_xdr_settings(u64 xdr_lpar)
+{
+	int status;
+
+	status = lv1_gpu_context_iomap(ps3fb.context_handle, GPU_IOIF,
+				       xdr_lpar, ps3fb_videomemory.size, 0);
+	if (status) {
+		printk(KERN_ERR "%s: lv1_gpu_context_iomap failed: %d\n",
+		       __FUNCTION__, status);
+		return -ENXIO;
+	}
+	DPRINTK("video:%p xdr_ea:%p ioif:%lx lpar:%lx phys:%lx size:%lx\n",
+		ps3fb_videomemory.address, ps3fb.xdr_ea, GPU_IOIF, xdr_lpar,
+		virt_to_abs(ps3fb.xdr_ea), ps3fb_videomemory.size);
+
+	status = lv1_gpu_context_attribute(ps3fb.context_handle,
+					   L1GPU_CONTEXT_ATTRIBUTE_FB_SETUP,
+					   xdr_lpar, ps3fb_videomemory.size,
+					   GPU_IOIF, 0);
+	if (status) {
+		printk(KERN_ERR "%s: lv1_gpu_context_attribute FB_SETUP failed: %d\n",
+		       __FUNCTION__, status);
+		return -ENXIO;
+	}
+	return 0;
+}
+
+static struct fb_ops ps3fb_ops = {
+	.fb_open	= ps3fb_open,
+	.fb_release	= ps3fb_release,
+	.fb_check_var	= ps3fb_check_var,
+	.fb_set_par	= ps3fb_set_par,
+	.fb_setcolreg	= ps3fb_setcolreg,
+	.fb_fillrect	= cfb_fillrect,
+	.fb_copyarea	= cfb_copyarea,
+	.fb_imageblit	= cfb_imageblit,
+	.fb_mmap	= ps3fb_mmap,
+	.fb_blank	= ps3fb_blank,
+	.fb_ioctl	= ps3fb_ioctl,
+	.fb_compat_ioctl = ps3fb_ioctl
+};
+
+static struct fb_fix_screeninfo ps3fb_fix __initdata = {
+	.id =		"PS3 FB",
+	.type =		FB_TYPE_PACKED_PIXELS,
+	.visual =	FB_VISUAL_TRUECOLOR,
+	.accel =	FB_ACCEL_NONE,
+};
+
+static int __init ps3fb_probe(struct platform_device *dev)
+{
+	struct fb_info *info;
+	int retval = -ENOMEM;
+	u64 ddr_lpar = 0;
+	u64 lpar_dma_control = 0;
+	u64 lpar_driver_info = 0;
+	u64 lpar_reports = 0;
+	u64 lpar_reports_size = 0;
+	u64 xdr_lpar;
+	int status;
+	unsigned long offset;
+
+	/* get gpu context handle */
+	status = lv1_gpu_memory_allocate(DDR_SIZE, 0, 0, 0, 0,
+					 &ps3fb.memory_handle, &ddr_lpar);
+	if (status) {
+		printk(KERN_ERR "%s: lv1_gpu_memory_allocate failed: %d\n",
+		       __FUNCTION__, status);
+		goto err;
+	}
+	DPRINTK("ddr:lpar:0x%lx\n", ddr_lpar);
+
+	status = lv1_gpu_context_allocate(ps3fb.memory_handle, 0,
+					  &ps3fb.context_handle,
+					  &lpar_dma_control, &lpar_driver_info,
+					  &lpar_reports, &lpar_reports_size);
+	if (status) {
+		printk(KERN_ERR "%s: lv1_gpu_context_attribute failed: %d\n",
+		       __FUNCTION__, status);
+		goto err_gpu_memory_free;
+	}
+
+	/* vsync interrupt */
+	ps3fb.dinfo = ioremap(lpar_driver_info, 128 * 1024);
+	if (!ps3fb.dinfo) {
+		printk(KERN_ERR "%s: ioremap failed\n", __FUNCTION__);
+		goto err_gpu_context_free;
+	}
+
+	retval = ps3fb_vsync_settings(ps3fb.dinfo, dev);
+	if (retval)
+		goto err_iounmap_dinfo;
+
+	/* xdr frame buffer */
+	ps3fb.xdr_ea = ps3fb_videomemory.address;
+	xdr_lpar = ps3_mm_phys_to_lpar(__pa(ps3fb.xdr_ea));
+	retval = ps3fb_xdr_settings(xdr_lpar);
+	if (retval)
+		goto err_free_irq;
+
+	/*
+	 * ps3fb must clear memory to prevent kernel info
+	 * leakage into userspace
+	 */
+	memset(ps3fb.xdr_ea, 0, ps3fb_videomemory.size);
+	info = framebuffer_alloc(sizeof(u32) * 16, &dev->dev);
+	if (!info)
+		goto err_free_irq;
+
+	offset = FB_OFF(ps3fb.res_index) + VP_OFF(ps3fb.res_index);
+	info->screen_base = (char __iomem *)ps3fb.xdr_ea + offset;
+	info->fbops = &ps3fb_ops;
+
+	info->fix = ps3fb_fix;
+	info->fix.smem_start = virt_to_abs(ps3fb.xdr_ea);
+	info->fix.smem_len = ps3fb_videomemory.size - offset;
+	info->pseudo_palette = info->par;
+	info->par = NULL;
+	info->flags = FBINFO_FLAG_DEFAULT;
+
+	retval = fb_alloc_cmap(&info->cmap, 256, 0);
+	if (retval < 0)
+		goto err_framebuffer_release;
+
+	if (!fb_find_mode(&info->var, info, mode_option, ps3fb_modedb,
+			  ARRAY_SIZE(ps3fb_modedb), ps3fb_default_mode(), 32)) {
+		retval = -EINVAL;
+		goto err_fb_dealloc;
+	}
+
+	fb_videomode_to_modelist(ps3fb_modedb, ARRAY_SIZE(ps3fb_modedb),
+				 &info->modelist);
+
+	retval = register_framebuffer(info);
+	if (retval < 0)
+		goto err_fb_dealloc;
+
+	platform_set_drvdata(dev, info);
+
+	printk(KERN_INFO
+	       "fb%d: PS3 frame buffer device, using %ld KiB of video memory\n",
+	       info->node, ps3fb_videomemory.size >> 10);
+
+	kernel_thread(ps3fbd, info, CLONE_KERNEL);
+	return 0;
+
+err_fb_dealloc:
+	fb_dealloc_cmap(&info->cmap);
+err_framebuffer_release:
+	framebuffer_release(info);
+err_free_irq:
+	free_irq(ps3fb.irq_no, ps3fb.dev);
+	ps3_free_irq(ps3fb.irq_no);
+err_iounmap_dinfo:
+	iounmap((u8 __iomem *)ps3fb.dinfo);
+err_gpu_context_free:
+	lv1_gpu_context_free(ps3fb.context_handle);
+err_gpu_memory_free:
+	lv1_gpu_memory_free(ps3fb.memory_handle);
+err:
+	return retval;
+}
+
+static void ps3fb_shutdown(struct platform_device *dev)
+{
+	ps3fb_flip_ctl(0);	/* flip off */
+	ps3fb.dinfo->irq.mask = 0;
+	free_irq(ps3fb.irq_no, ps3fb.dev);
+	ps3_free_irq(ps3fb.irq_no);
+	iounmap((u8 __iomem *)ps3fb.dinfo);
+}
+
+void ps3fb_cleanup(void)
+{
+	int status;
+
+	if (ps3fb.irq_no) {
+		free_irq(ps3fb.irq_no, ps3fb.dev);
+		ps3_free_irq(ps3fb.irq_no);
+	}
+	iounmap((u8 __iomem *)ps3fb.dinfo);
+
+	status = lv1_gpu_context_free(ps3fb.context_handle);
+	if (status)
+		DPRINTK("lv1_gpu_context_free failed: %d\n", status);
+
+	status = lv1_gpu_memory_free(ps3fb.memory_handle);
+	if (status)
+		DPRINTK("lv1_gpu_memory_free failed: %d\n", status);
+
+	ps3av_dev_close();
+}
+
+EXPORT_SYMBOL_GPL(ps3fb_cleanup);
+
+static int ps3fb_remove(struct platform_device *dev)
+{
+	struct fb_info *info = platform_get_drvdata(dev);
+
+	if (info) {
+		unregister_framebuffer(info);
+		fb_dealloc_cmap(&info->cmap);
+		framebuffer_release(info);
+	}
+	ps3fb_cleanup();
+	return 0;
+}
+
+static struct platform_driver ps3fb_driver = {
+	.probe	= ps3fb_probe,
+	.remove = ps3fb_remove,
+	.shutdown = ps3fb_shutdown,
+	.driver = { .name = "ps3fb" }
+};
+
+static struct platform_device ps3fb_device = {
+	.name	= "ps3fb",
+	.id	= 0,
+	.dev	= { .release = ps3fb_platform_release }
+};
+
+int ps3fb_set_sync(void)
+{
+	int status;
+
+#ifdef HEAD_A
+	status = lv1_gpu_context_attribute(0x0,
+					   L1GPU_CONTEXT_ATTRIBUTE_DISPLAY_SYNC,
+					   0, L1GPU_DISPLAY_SYNC_VSYNC, 0, 0);
+	if (status) {
+		printk(KERN_ERR "%s: lv1_gpu_context_attribute DISPLAY_SYNC failed: %d\n",
+		       __FUNCTION__, status);
+		return -1;
+	}
+#endif
+#ifdef HEAD_B
+	status = lv1_gpu_context_attribute(0x0,
+					   L1GPU_CONTEXT_ATTRIBUTE_DISPLAY_SYNC,
+					   1, L1GPU_DISPLAY_SYNC_VSYNC, 0, 0);
+
+	if (status) {
+		printk(KERN_ERR "%s: lv1_gpu_context_attribute DISPLAY_MODE failed: %d\n",
+		       __FUNCTION__, status);
+		return -1;
+	}
+#endif
+	return 0;
+}
+
+EXPORT_SYMBOL_GPL(ps3fb_set_sync);
+
+static int __init ps3fb_init(void)
+{
+	int error;
+#ifndef MODULE
+	int mode;
+	char *option = NULL;
+
+	if (fb_get_options("ps3fb", &option))
+		goto err;
+#endif
+
+	if (!ps3fb_videomemory.address)
+		goto err;
+
+	error = ps3av_dev_open();
+	if (error) {
+		printk(KERN_ERR "%s: ps3av_dev_open failed\n", __FUNCTION__);
+		goto err;
+	}
+
+	ps3fb_mode = ps3av_get_mode();
+	DPRINTK("ps3av_mode:%d\n", ps3fb_mode);
+#ifndef MODULE
+	mode = ps3fb_setup(option);	/* check boot option */
+	if (mode)
+		ps3fb_mode = mode;
+#endif
+	if (ps3fb_mode > 0) {
+		u32 xres, yres;
+		ps3av_video_mode2res(ps3fb_mode, &xres, &yres);
+		ps3fb.res_index = ps3fb_get_res_table(xres, yres);
+		DPRINTK("res_index:%d\n", ps3fb.res_index);
+	} else
+		ps3fb.res_index = GPU_RES_INDEX;
+
+	atomic_set(&ps3fb.f_count, -1);	/* fbcon opens ps3fb */
+	atomic_set(&ps3fb.ext_flip, 0);	/* for flip with vsync */
+	init_MUTEX(&ps3fb.sem);
+	init_waitqueue_head(&ps3fb.wait_vsync);
+	ps3fb.num_frames = 1;
+
+	error = platform_driver_register(&ps3fb_driver);
+	if (!error) {
+		error = platform_device_register(&ps3fb_device);
+		if (error)
+			platform_driver_unregister(&ps3fb_driver);
+	}
+
+	ps3fb_set_sync();
+
+	return error;
+
+err:
+	return -ENXIO;
+}
+
+module_init(ps3fb_init);
+
+#ifdef MODULE
+static void __exit ps3fb_exit(void)
+{
+	platform_device_unregister(&ps3fb_device);
+	platform_driver_unregister(&ps3fb_driver);
+}
+
+module_exit(ps3fb_exit);
+
+MODULE_LICENSE("GPL");
+#endif				/* MODULE */