kernel-ark/drivers/video/ps3fb.c
Rafael J. Wysocki 8314418629 Freezer: make kernel threads nonfreezable by default
Currently, the freezer treats all tasks as freezable, except for the kernel
threads that explicitly set the PF_NOFREEZE flag for themselves.  This
approach is problematic, since it requires every kernel thread to either
set PF_NOFREEZE explicitly, or call try_to_freeze(), even if it doesn't
care for the freezing of tasks at all.

It seems better to only require the kernel threads that want to or need to
be frozen to use some freezer-related code and to remove any
freezer-related code from the other (nonfreezable) kernel threads, which is
done in this patch.

The patch causes all kernel threads to be nonfreezable by default (ie.  to
have PF_NOFREEZE set by default) and introduces the set_freezable()
function that should be called by the freezable kernel threads in order to
unset PF_NOFREEZE.  It also makes all of the currently freezable kernel
threads call set_freezable(), so it shouldn't cause any (intentional)
change of behaviour to appear.  Additionally, it updates documentation to
describe the freezing of tasks more accurately.

[akpm@linux-foundation.org: build fixes]
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Nigel Cunningham <nigel@nigel.suspend2.net>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Gautham R Shenoy <ego@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-17 10:23:02 -07:00

1227 lines
30 KiB
C

/*
* 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/console.h>
#include <linux/ioctl.h>
#include <linux/notifier.h>
#include <linux/reboot.h>
#include <linux/kthread.h>
#include <linux/freezer.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>
#define DEVICE_NAME "ps3fb"
#ifdef PS3FB_DEBUG
#define DPRINTK(fmt, args...) printk("%s: " fmt, __func__ , ##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;
u64 context_handle, memory_handle;
void *xdr_ea;
struct gpu_driver_info *dinfo;
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;
int is_kicked;
struct task_struct *task;
};
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;
module_param(ps3fb_mode, int, 0);
static char *mode_option __devinitdata;
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",
__func__, 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",
__func__, 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",
__func__, 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",
__func__, 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", __func__, 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, void *data)
{
struct ps3fb_priv *priv = data;
if (on)
atomic_dec_if_positive(&priv->ext_flip);
else
atomic_inc(&priv->ext_flip);
}
/*
* 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;
if (!(val & PS3AV_MODE_MASK)) {
u32 id = ps3av_get_auto_mode(0);
if (id > 0)
val = (val & ~PS3AV_MODE_MASK) | id;
}
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");
atomic_dec_if_positive(&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)
{
set_freezable();
while (!kthread_should_stop()) {
try_to_freeze();
set_current_state(TASK_INTERRUPTIBLE);
if (ps3fb.is_kicked) {
ps3fb.is_kicked = 0;
ps3fb_sync(0); /* single buffer */
}
schedule();
}
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",
__func__, status);
return IRQ_NONE;
}
if (v1 & (1 << GPU_INTR_STATUS_VSYNC_1)) {
/* VSYNC */
ps3fb.vblank_count = head->vblank_count;
if (ps3fb.task && !ps3fb.is_blanked &&
!atomic_read(&ps3fb.ext_flip)) {
ps3fb.is_kicked = 1;
wake_up_process(ps3fb.task);
}
wake_up_interruptible(&ps3fb.wait_vsync);
}
return IRQ_HANDLED;
}
static int ps3fb_vsync_settings(struct gpu_driver_info *dinfo,
struct ps3_system_bus_device *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", __func__,
dinfo->version_driver);
return -EINVAL;
}
error = ps3_irq_plug_setup(PS3_BINDING_CPU_ANY, dinfo->irq.irq_outlet,
&ps3fb.irq_no);
if (error) {
printk(KERN_ERR "%s: ps3_alloc_irq failed %d\n", __func__,
error);
return error;
}
error = request_irq(ps3fb.irq_no, ps3fb_vsync_interrupt, IRQF_DISABLED,
DEVICE_NAME, dev);
if (error) {
printk(KERN_ERR "%s: request_irq failed %d\n", __func__,
error);
ps3_irq_plug_destroy(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",
__func__, 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",
__func__, status);
return -ENXIO;
}
return 0;
}
static struct fb_ops ps3fb_ops = {
.fb_open = ps3fb_open,
.fb_release = ps3fb_release,
.fb_read = fb_sys_read,
.fb_write = fb_sys_write,
.fb_check_var = ps3fb_check_var,
.fb_set_par = ps3fb_set_par,
.fb_setcolreg = ps3fb_setcolreg,
.fb_fillrect = sys_fillrect,
.fb_copyarea = sys_copyarea,
.fb_imageblit = sys_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 = DEVICE_NAME,
.type = FB_TYPE_PACKED_PIXELS,
.visual = FB_VISUAL_TRUECOLOR,
.accel = FB_ACCEL_NONE,
};
static 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", __func__, 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", __func__, status);
return -1;
}
#endif
return 0;
}
static int __devinit ps3fb_probe(struct ps3_system_bus_device *dev)
{
struct fb_info *info;
int retval = -ENOMEM;
u32 xres, yres;
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;
struct task_struct *task;
status = ps3_open_hv_device(dev);
if (status) {
printk(KERN_ERR "%s: ps3_open_hv_device failed\n", __func__);
goto err;
}
if (!ps3fb_mode)
ps3fb_mode = ps3av_get_mode();
DPRINTK("ps3av_mode:%d\n", ps3fb_mode);
if (ps3fb_mode > 0 &&
!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_waitqueue_head(&ps3fb.wait_vsync);
ps3fb.num_frames = 1;
ps3fb_set_sync();
/* 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",
__func__, 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",
__func__, 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", __func__);
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->core);
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;
dev->core.driver_data = info;
printk(KERN_INFO
"fb%d: PS3 frame buffer device, using %ld KiB of video memory\n",
info->node, ps3fb_videomemory.size >> 10);
task = kthread_run(ps3fbd, info, DEVICE_NAME);
if (IS_ERR(task)) {
retval = PTR_ERR(task);
goto err_unregister_framebuffer;
}
ps3fb.task = task;
ps3av_register_flip_ctl(ps3fb_flip_ctl, &ps3fb);
return 0;
err_unregister_framebuffer:
unregister_framebuffer(info);
err_fb_dealloc:
fb_dealloc_cmap(&info->cmap);
err_framebuffer_release:
framebuffer_release(info);
err_free_irq:
free_irq(ps3fb.irq_no, dev);
ps3_irq_plug_destroy(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 int ps3fb_shutdown(struct ps3_system_bus_device *dev)
{
int status;
struct fb_info *info = dev->core.driver_data;
DPRINTK(" -> %s:%d\n", __func__, __LINE__);
ps3fb_flip_ctl(0, &ps3fb); /* flip off */
ps3fb.dinfo->irq.mask = 0;
if (info) {
unregister_framebuffer(info);
fb_dealloc_cmap(&info->cmap);
framebuffer_release(info);
}
ps3av_register_flip_ctl(NULL, NULL);
if (ps3fb.task) {
struct task_struct *task = ps3fb.task;
ps3fb.task = NULL;
kthread_stop(task);
}
if (ps3fb.irq_no) {
free_irq(ps3fb.irq_no, dev);
ps3_irq_plug_destroy(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);
ps3_close_hv_device(dev);
DPRINTK(" <- %s:%d\n", __func__, __LINE__);
return 0;
}
static struct ps3_system_bus_driver ps3fb_driver = {
.match_id = PS3_MATCH_ID_GRAPHICS,
.core.name = DEVICE_NAME,
.core.owner = THIS_MODULE,
.probe = ps3fb_probe,
.remove = ps3fb_shutdown,
.shutdown = ps3fb_shutdown,
};
static int __init ps3fb_setup(void)
{
char *options;
#ifdef MODULE
return 0;
#endif
if (fb_get_options(DEVICE_NAME, &options))
return -ENXIO;
if (!options || !*options)
return 0;
while (1) {
char *this_opt = strsep(&options, ",");
if (!this_opt)
break;
if (!*this_opt)
continue;
if (!strncmp(this_opt, "mode:", 5))
ps3fb_mode = simple_strtoul(this_opt + 5, NULL, 0);
else
mode_option = this_opt;
}
return 0;
}
static int __init ps3fb_init(void)
{
if (!ps3fb_videomemory.address || ps3fb_setup())
return -ENXIO;
return ps3_system_bus_driver_register(&ps3fb_driver);
}
static void __exit ps3fb_exit(void)
{
DPRINTK(" -> %s:%d\n", __func__, __LINE__);
ps3_system_bus_driver_unregister(&ps3fb_driver);
DPRINTK(" <- %s:%d\n", __func__, __LINE__);
}
module_init(ps3fb_init);
module_exit(ps3fb_exit);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("PS3 GPU Frame Buffer Driver");
MODULE_AUTHOR("Sony Computer Entertainment Inc.");
MODULE_ALIAS(PS3_MODULE_ALIAS_GRAPHICS);