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kernel_samsung_a34x-permissive/drivers/video/fbdev/ps3fb.c

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Import A346BXXU1AWB9 kernel source Android 13
2024-04-28 06:49:01 -07:00
/*
* 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/interrupt.h>
#include <linux/console.h>
#include <linux/ioctl.h>
#include <linux/kthread.h>
#include <linux/freezer.h>
#include <linux/uaccess.h>
#include <linux/fb.h>
#include <linux/init.h>
#include <asm/cell-regs.h>
#include <asm/lv1call.h>
#include <asm/ps3av.h>
#include <asm/ps3fb.h>
#include <asm/ps3.h>
#include <asm/ps3gpu.h>
#define DEVICE_NAME "ps3fb"
#define GPU_CMD_BUF_SIZE (2 * 1024 * 1024)
#define GPU_FB_START (64 * 1024)
#define GPU_IOIF (0x0d000000UL)
#define GPU_ALIGN_UP(x) _ALIGN_UP((x), 64)
#define GPU_MAX_LINE_LENGTH (65536 - 64)
#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;
struct gpu_driver_info *dinfo;
u64 vblank_count; /* frame count */
wait_queue_head_t wait_vsync;
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_par {
u32 pseudo_palette[16];
int mode_id, new_mode_id;
unsigned int num_frames; /* num of frame buffers */
unsigned int width;
unsigned int height;
unsigned int ddr_line_length;
unsigned int ddr_frame_size;
unsigned int xdr_frame_size;
unsigned int full_offset; /* start of fullscreen DDR fb */
unsigned int fb_offset; /* start of actual DDR fb */
unsigned int pan_offset;
};
#define FIRST_NATIVE_MODE_INDEX 10
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
}, {
/* 1080i */
"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
},
[FIRST_NATIVE_MODE_INDEX] =
/* 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 */
"1080if", 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
},
/* 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
}
};
#define HEAD_A
#define HEAD_B
#define BPP 4 /* number of bytes per pixel */
static int ps3fb_mode;
module_param(ps3fb_mode, int, 0);
static char *mode_option;
static int ps3fb_cmp_mode(const struct fb_videomode *vmode,
const struct fb_var_screeninfo *var)
{
long xres, yres, left_margin, right_margin, upper_margin, lower_margin;
long dx, dy;
/* maximum values */
if (var->xres > vmode->xres || var->yres > vmode->yres ||
var->pixclock > vmode->pixclock ||
var->hsync_len > vmode->hsync_len ||
var->vsync_len > vmode->vsync_len)
return -1;
/* progressive/interlaced must match */
if ((var->vmode & FB_VMODE_MASK) != vmode->vmode)
return -1;
/* minimum resolution */
xres = max(var->xres, 1U);
yres = max(var->yres, 1U);
/* minimum margins */
left_margin = max(var->left_margin, vmode->left_margin);
right_margin = max(var->right_margin, vmode->right_margin);
upper_margin = max(var->upper_margin, vmode->upper_margin);
lower_margin = max(var->lower_margin, vmode->lower_margin);
/* resolution + margins may not exceed native parameters */
dx = ((long)vmode->left_margin + (long)vmode->xres +
(long)vmode->right_margin) -
(left_margin + xres + right_margin);
if (dx < 0)
return -1;
dy = ((long)vmode->upper_margin + (long)vmode->yres +
(long)vmode->lower_margin) -
(upper_margin + yres + lower_margin);
if (dy < 0)
return -1;
/* exact match */
if (!dx && !dy)
return 0;
/* resolution difference */
return (vmode->xres - xres) * (vmode->yres - yres);
}
static const struct fb_videomode *ps3fb_native_vmode(enum ps3av_mode_num id)
{
return &ps3fb_modedb[FIRST_NATIVE_MODE_INDEX + id - 1];
}
static const struct fb_videomode *ps3fb_vmode(int id)
{
u32 mode = id & PS3AV_MODE_MASK;
if (mode < PS3AV_MODE_480I || mode > PS3AV_MODE_WUXGA)
return NULL;
if (mode <= PS3AV_MODE_1080P50 && !(id & PS3AV_MODE_FULL)) {
/* Non-fullscreen broadcast mode */
return &ps3fb_modedb[mode - 1];
}
return ps3fb_native_vmode(mode);
}
static unsigned int ps3fb_find_mode(struct fb_var_screeninfo *var,
u32 *ddr_line_length, u32 *xdr_line_length)
{
unsigned int id, best_id;
int diff, best_diff;
const struct fb_videomode *vmode;
long gap;
best_id = 0;
best_diff = INT_MAX;
pr_debug("%s: wanted %u [%u] %u x %u [%u] %u\n", __func__,
var->left_margin, var->xres, var->right_margin,
var->upper_margin, var->yres, var->lower_margin);
for (id = PS3AV_MODE_480I; id <= PS3AV_MODE_WUXGA; id++) {
vmode = ps3fb_native_vmode(id);
diff = ps3fb_cmp_mode(vmode, var);
pr_debug("%s: mode %u: %u [%u] %u x %u [%u] %u: diff = %d\n",
__func__, id, vmode->left_margin, vmode->xres,
vmode->right_margin, vmode->upper_margin,
vmode->yres, vmode->lower_margin, diff);
if (diff < 0)
continue;
if (diff < best_diff) {
best_id = id;
if (!diff)
break;
best_diff = diff;
}
}
if (!best_id) {
pr_debug("%s: no suitable mode found\n", __func__);
return 0;
}
id = best_id;
vmode = ps3fb_native_vmode(id);
*ddr_line_length = vmode->xres * BPP;
/* minimum resolution */
if (!var->xres)
var->xres = 1;
if (!var->yres)
var->yres = 1;
/* minimum virtual resolution */
if (var->xres_virtual < var->xres)
var->xres_virtual = var->xres;
if (var->yres_virtual < var->yres)
var->yres_virtual = var->yres;
/* minimum margins */
if (var->left_margin < vmode->left_margin)
var->left_margin = vmode->left_margin;
if (var->right_margin < vmode->right_margin)
var->right_margin = vmode->right_margin;
if (var->upper_margin < vmode->upper_margin)
var->upper_margin = vmode->upper_margin;
if (var->lower_margin < vmode->lower_margin)
var->lower_margin = vmode->lower_margin;
/* extra margins */
gap = ((long)vmode->left_margin + (long)vmode->xres +
(long)vmode->right_margin) -
((long)var->left_margin + (long)var->xres +
(long)var->right_margin);
if (gap > 0) {
var->left_margin += gap/2;
var->right_margin += (gap+1)/2;
pr_debug("%s: rounded up H to %u [%u] %u\n", __func__,
var->left_margin, var->xres, var->right_margin);
}
gap = ((long)vmode->upper_margin + (long)vmode->yres +
(long)vmode->lower_margin) -
((long)var->upper_margin + (long)var->yres +
(long)var->lower_margin);
if (gap > 0) {
var->upper_margin += gap/2;
var->lower_margin += (gap+1)/2;
pr_debug("%s: rounded up V to %u [%u] %u\n", __func__,
var->upper_margin, var->yres, var->lower_margin);
}
/* fixed fields */
var->pixclock = vmode->pixclock;
var->hsync_len = vmode->hsync_len;
var->vsync_len = vmode->vsync_len;
var->sync = vmode->sync;
if (ps3_compare_firmware_version(1, 9, 0) >= 0) {
*xdr_line_length = GPU_ALIGN_UP(var->xres_virtual * BPP);
if (*xdr_line_length > GPU_MAX_LINE_LENGTH)
*xdr_line_length = GPU_MAX_LINE_LENGTH;
} else
*xdr_line_length = *ddr_line_length;
if (vmode->sync & FB_SYNC_BROADCAST) {
/* Full broadcast modes have the full mode bit set */
if (vmode->xres == var->xres && vmode->yres == var->yres)
id |= PS3AV_MODE_FULL;
}
pr_debug("%s: mode %u\n", __func__, id);
return id;
}
static void ps3fb_sync_image(struct device *dev, u64 frame_offset,
u64 dst_offset, u64 src_offset, u32 width,
u32 height, u32 dst_line_length,
u32 src_line_length)
{
int status;
u64 line_length;
line_length = dst_line_length;
if (src_line_length != dst_line_length)
line_length |= (u64)src_line_length << 32;
src_offset += GPU_FB_START;
mutex_lock(&ps3_gpu_mutex);
status = lv1_gpu_fb_blit(ps3fb.context_handle, dst_offset,
GPU_IOIF + src_offset,
L1GPU_FB_BLIT_WAIT_FOR_COMPLETION |
(width << 16) | height,
line_length);
mutex_unlock(&ps3_gpu_mutex);
if (status)
dev_err(dev, "%s: lv1_gpu_fb_blit failed: %d\n", __func__,
status);
#ifdef HEAD_A
status = lv1_gpu_display_flip(ps3fb.context_handle, 0, frame_offset);
if (status)
dev_err(dev, "%s: lv1_gpu_display_flip failed: %d\n", __func__,
status);
#endif
#ifdef HEAD_B
status = lv1_gpu_display_flip(ps3fb.context_handle, 1, frame_offset);
if (status)
dev_err(dev, "%s: lv1_gpu_display_flip failed: %d\n", __func__,
status);
#endif
}
static int ps3fb_sync(struct fb_info *info, u32 frame)
{
struct ps3fb_par *par = info->par;
int error = 0;
u64 ddr_base, xdr_base;
if (frame > par->num_frames - 1) {
dev_dbg(info->device, "%s: invalid frame number (%u)\n",
__func__, frame);
error = -EINVAL;
goto out;
}
xdr_base = frame * par->xdr_frame_size;
ddr_base = frame * par->ddr_frame_size;
ps3fb_sync_image(info->device, ddr_base + par->full_offset,
ddr_base + par->fb_offset, xdr_base + par->pan_offset,
par->width, par->height, par->ddr_line_length,
info->fix.line_length);
out:
return error;
}
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);
if (console_trylock()) {
ps3fb_sync(info, 0); /* single buffer */
console_unlock();
}
}
}
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 xdr_line_length, ddr_line_length;
int mode;
mode = ps3fb_find_mode(var, &ddr_line_length, &xdr_line_length);
if (!mode)
return -EINVAL;
/* Virtual screen */
if (var->xres_virtual > xdr_line_length / BPP) {
dev_dbg(info->device,
"Horizontal virtual screen size too large\n");
return -EINVAL;
}
if (var->xoffset + var->xres > var->xres_virtual ||
var->yoffset + var->yres > var->yres_virtual) {
dev_dbg(info->device, "panning out-of-range\n");
return -EINVAL;
}
/* 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) {
dev_dbg(info->device, "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) {
dev_dbg(info->device, "Rotation is not supported\n");
return -EINVAL;
}
/* Memory limit */
if (var->yres_virtual * xdr_line_length > info->fix.smem_len) {
dev_dbg(info->device, "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)
{
struct ps3fb_par *par = info->par;
unsigned int mode, ddr_line_length, xdr_line_length, lines, maxlines;
unsigned int ddr_xoff, ddr_yoff, offset;
const struct fb_videomode *vmode;
u64 dst;
mode = ps3fb_find_mode(&info->var, &ddr_line_length, &xdr_line_length);
if (!mode)
return -EINVAL;
vmode = ps3fb_native_vmode(mode & PS3AV_MODE_MASK);
info->fix.xpanstep = info->var.xres_virtual > info->var.xres ? 1 : 0;
info->fix.ypanstep = info->var.yres_virtual > info->var.yres ? 1 : 0;
info->fix.line_length = xdr_line_length;
par->ddr_line_length = ddr_line_length;
par->ddr_frame_size = vmode->yres * ddr_line_length;
par->xdr_frame_size = info->var.yres_virtual * xdr_line_length;
par->num_frames = info->fix.smem_len /
max(par->ddr_frame_size, par->xdr_frame_size);
/* Keep the special bits we cannot set using fb_var_screeninfo */
par->new_mode_id = (par->new_mode_id & ~PS3AV_MODE_MASK) | mode;
par->width = info->var.xres;
par->height = info->var.yres;
/* Start of the virtual frame buffer (relative to fullscreen) */
ddr_xoff = info->var.left_margin - vmode->left_margin;
ddr_yoff = info->var.upper_margin - vmode->upper_margin;
offset = ddr_yoff * ddr_line_length + ddr_xoff * BPP;
par->fb_offset = GPU_ALIGN_UP(offset);
par->full_offset = par->fb_offset - offset;
par->pan_offset = info->var.yoffset * xdr_line_length +
info->var.xoffset * BPP;
if (par->new_mode_id != par->mode_id) {
if (ps3av_set_video_mode(par->new_mode_id)) {
par->new_mode_id = par->mode_id;
return -EINVAL;
}
par->mode_id = par->new_mode_id;
}
/* Clear XDR frame buffer memory */
memset((void __force *)info->screen_base, 0, info->fix.smem_len);
/* Clear DDR frame buffer memory */
lines = vmode->yres * par->num_frames;
if (par->full_offset)
lines++;
maxlines = info->fix.smem_len / ddr_line_length;
for (dst = 0; lines; dst += maxlines * ddr_line_length) {
unsigned int l = min(lines, maxlines);
ps3fb_sync_image(info->device, 0, dst, 0, vmode->xres, l,
ddr_line_length, ddr_line_length);
lines -= l;
}
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;
}
static int ps3fb_pan_display(struct fb_var_screeninfo *var,
struct fb_info *info)
{
struct ps3fb_par *par = info->par;
par->pan_offset = var->yoffset * info->fix.line_length +
var->xoffset * BPP;
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)
{
int r;
r = vm_iomap_memory(vma, info->fix.smem_start, info->fix.smem_len);
dev_dbg(info->device, "ps3fb: mmap framebuffer P(%lx)->V(%lx)\n",
info->fix.smem_start + (vma->vm_pgoff << PAGE_SHIFT),
vma->vm_start);
return r;
}
/*
* Blank the display
*/
static int ps3fb_blank(int blank, struct fb_info *info)
{
int retval;
dev_dbg(info->device, "%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;
}
static 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;
}
/*
* ioctl
*/
static int ps3fb_ioctl(struct fb_info *info, unsigned int cmd,
unsigned long arg)
{
void __user *argp = (void __user *)arg;
u32 val;
int retval = -EFAULT;
switch (cmd) {
case FBIOGET_VBLANK:
{
struct fb_vblank vblank;
dev_dbg(info->device, "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;
dev_dbg(info->device, "FBIO_WAITFORVSYNC:\n");
if (get_user(crt, (u32 __user *) arg))
break;
retval = ps3fb_wait_for_vsync(crt);
break;
}
case PS3FB_IOCTL_SETMODE:
{
struct ps3fb_par *par = info->par;
const struct fb_videomode *vmode;
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();
if (id > 0)
val = (val & ~PS3AV_MODE_MASK) | id;
}
dev_dbg(info->device, "PS3FB_IOCTL_SETMODE:%x\n", val);
retval = -EINVAL;
vmode = ps3fb_vmode(val);
if (vmode) {
var = info->var;
fb_videomode_to_var(&var, vmode);
console_lock();
info->flags |= FBINFO_MISC_USEREVENT;
/* Force, in case only special bits changed */
var.activate |= FB_ACTIVATE_FORCE;
par->new_mode_id = val;
retval = fb_set_var(info, &var);
info->flags &= ~FBINFO_MISC_USEREVENT;
console_unlock();
}
break;
}
case PS3FB_IOCTL_GETMODE:
val = ps3av_get_mode();
dev_dbg(info->device, "PS3FB_IOCTL_GETMODE:%x\n", val);
if (!copy_to_user(argp, &val, sizeof(val)))
retval = 0;
break;
case PS3FB_IOCTL_SCREENINFO:
{
struct ps3fb_par *par = info->par;
struct ps3fb_ioctl_res res;
dev_dbg(info->device, "PS3FB_IOCTL_SCREENINFO:\n");
res.xres = info->fix.line_length / BPP;
res.yres = info->var.yres_virtual;
res.xoff = (res.xres - info->var.xres) / 2;
res.yoff = (res.yres - info->var.yres) / 2;
res.num_frames = par->num_frames;
if (!copy_to_user(argp, &res, sizeof(res)))
retval = 0;
break;
}
case PS3FB_IOCTL_ON:
dev_dbg(info->device, "PS3FB_IOCTL_ON:\n");
atomic_inc(&ps3fb.ext_flip);
retval = 0;
break;
case PS3FB_IOCTL_OFF:
dev_dbg(info->device, "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;
dev_dbg(info->device, "PS3FB_IOCTL_FSEL:%d\n", val);
console_lock();
retval = ps3fb_sync(info, val);
console_unlock();
break;
default:
retval = -ENOIOCTLCMD;
break;
}
return retval;
}
static int ps3fbd(void *arg)
{
struct fb_info *info = arg;
set_freezable();
while (!kthread_should_stop()) {
try_to_freeze();
set_current_state(TASK_INTERRUPTIBLE);
if (ps3fb.is_kicked) {
ps3fb.is_kicked = 0;
console_lock();
ps3fb_sync(info, 0); /* single buffer */
console_unlock();
}
schedule();
}
return 0;
}
static irqreturn_t ps3fb_vsync_interrupt(int irq, void *ptr)
{
struct device *dev = 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) {
dev_err(dev, "%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 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_pan_display = ps3fb_pan_display,
.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 const struct fb_fix_screeninfo ps3fb_fix = {
.id = DEVICE_NAME,
.type = FB_TYPE_PACKED_PIXELS,
.visual = FB_VISUAL_TRUECOLOR,
.accel = FB_ACCEL_NONE,
};
static int ps3fb_probe(struct ps3_system_bus_device *dev)
{
struct fb_info *info;
struct ps3fb_par *par;
int retval;
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;
struct gpu_driver_info *dinfo;
void *fb_start;
int status;
struct task_struct *task;
unsigned long max_ps3fb_size;
if (ps3fb_videomemory.size < GPU_CMD_BUF_SIZE) {
dev_err(&dev->core, "%s: Not enough video memory\n", __func__);
return -ENOMEM;
}
retval = ps3_open_hv_device(dev);
if (retval) {
dev_err(&dev->core, "%s: ps3_open_hv_device failed\n",
__func__);
goto err;
}
if (!ps3fb_mode)
ps3fb_mode = ps3av_get_mode();
dev_dbg(&dev->core, "ps3fb_mode: %d\n", ps3fb_mode);
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);
#ifdef HEAD_A
status = lv1_gpu_display_sync(0x0, 0, L1GPU_DISPLAY_SYNC_VSYNC);
if (status) {
dev_err(&dev->core, "%s: lv1_gpu_display_sync failed: %d\n",
__func__, status);
retval = -ENODEV;
goto err_close_device;
}
#endif
#ifdef HEAD_B
status = lv1_gpu_display_sync(0x0, 1, L1GPU_DISPLAY_SYNC_VSYNC);
if (status) {
dev_err(&dev->core, "%s: lv1_gpu_display_sync failed: %d\n",
__func__, status);
retval = -ENODEV;
goto err_close_device;
}
#endif
max_ps3fb_size = _ALIGN_UP(GPU_IOIF, 256*1024*1024) - GPU_IOIF;
if (ps3fb_videomemory.size > max_ps3fb_size) {
dev_info(&dev->core, "Limiting ps3fb mem size to %lu bytes\n",
max_ps3fb_size);
ps3fb_videomemory.size = max_ps3fb_size;
}
/* get gpu context handle */
status = lv1_gpu_memory_allocate(ps3fb_videomemory.size, 0, 0, 0, 0,
&ps3fb.memory_handle, &ddr_lpar);
if (status) {
dev_err(&dev->core, "%s: lv1_gpu_memory_allocate failed: %d\n",
__func__, status);
retval = -ENOMEM;
goto err_close_device;
}
dev_dbg(&dev->core, "ddr:lpar:0x%llx\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) {
dev_err(&dev->core,
"%s: lv1_gpu_context_allocate failed: %d\n", __func__,
status);
retval = -ENOMEM;
goto err_gpu_memory_free;
}
/* vsync interrupt */
dinfo = (void __force *)ioremap(lpar_driver_info, 128 * 1024);
if (!dinfo) {
dev_err(&dev->core, "%s: ioremap failed\n", __func__);
retval = -ENOMEM;
goto err_gpu_context_free;
}
ps3fb.dinfo = dinfo;
dev_dbg(&dev->core, "version_driver:%x\n", dinfo->version_driver);
dev_dbg(&dev->core, "irq outlet:%x\n", dinfo->irq.irq_outlet);
dev_dbg(&dev->core, "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) {
dev_err(&dev->core, "%s: version_driver err:%x\n", __func__,
dinfo->version_driver);
retval = -EINVAL;
goto err_iounmap_dinfo;
}
retval = ps3_irq_plug_setup(PS3_BINDING_CPU_ANY, dinfo->irq.irq_outlet,
&ps3fb.irq_no);
if (retval) {
dev_err(&dev->core, "%s: ps3_alloc_irq failed %d\n", __func__,
retval);
goto err_iounmap_dinfo;
}
retval = request_irq(ps3fb.irq_no, ps3fb_vsync_interrupt,
0, DEVICE_NAME, &dev->core);
if (retval) {
dev_err(&dev->core, "%s: request_irq failed %d\n", __func__,
retval);
goto err_destroy_plug;
}
dinfo->irq.mask = (1 << GPU_INTR_STATUS_VSYNC_1) |
(1 << GPU_INTR_STATUS_FLIP_1);
/* Clear memory to prevent kernel info leakage into userspace */
memset(ps3fb_videomemory.address, 0, ps3fb_videomemory.size);
xdr_lpar = ps3_mm_phys_to_lpar(__pa(ps3fb_videomemory.address));
status = lv1_gpu_context_iomap(ps3fb.context_handle, GPU_IOIF,
xdr_lpar, ps3fb_videomemory.size,
CBE_IOPTE_PP_W | CBE_IOPTE_PP_R |
CBE_IOPTE_M);
if (status) {
dev_err(&dev->core, "%s: lv1_gpu_context_iomap failed: %d\n",
__func__, status);
retval = -ENXIO;
goto err_free_irq;
}
dev_dbg(&dev->core, "video:%p ioif:%lx lpar:%llx size:%lx\n",
ps3fb_videomemory.address, GPU_IOIF, xdr_lpar,
ps3fb_videomemory.size);
status = lv1_gpu_fb_setup(ps3fb.context_handle, xdr_lpar,
GPU_CMD_BUF_SIZE, GPU_IOIF);
if (status) {
dev_err(&dev->core, "%s: lv1_gpu_fb_setup failed: %d\n",
__func__, status);
retval = -ENXIO;
goto err_context_unmap;
}
info = framebuffer_alloc(sizeof(struct ps3fb_par), &dev->core);
if (!info) {
retval = -ENOMEM;
goto err_context_fb_close;
}
par = info->par;
par->mode_id = ~ps3fb_mode; /* != ps3fb_mode, to trigger change */
par->new_mode_id = ps3fb_mode;
par->num_frames = 1;
info->fbops = &ps3fb_ops;
info->fix = ps3fb_fix;
/*
* The GPU command buffer is at the start of video memory
* As we don't use the full command buffer, we can put the actual
* frame buffer at offset GPU_FB_START and save some precious XDR
* memory
*/
fb_start = ps3fb_videomemory.address + GPU_FB_START;
info->screen_base = (char __force __iomem *)fb_start;
info->fix.smem_start = __pa(fb_start);
info->fix.smem_len = ps3fb_videomemory.size - GPU_FB_START;
info->pseudo_palette = par->pseudo_palette;
info->flags = FBINFO_DEFAULT | FBINFO_READS_FAST |
FBINFO_HWACCEL_XPAN | FBINFO_HWACCEL_YPAN;
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_vmode(par->new_mode_id), 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;
ps3_system_bus_set_drvdata(dev, info);
dev_info(info->device, "%s %s, using %u KiB of video memory\n",
dev_driver_string(info->dev), dev_name(info->dev),
info->fix.smem_len >> 10);
task = kthread_run(ps3fbd, info, DEVICE_NAME);
if (IS_ERR(task)) {
retval = PTR_ERR(task);
goto err_unregister_framebuffer;
}
ps3fb.task = task;
return 0;
err_unregister_framebuffer:
unregister_framebuffer(info);
err_fb_dealloc:
fb_dealloc_cmap(&info->cmap);
err_framebuffer_release:
framebuffer_release(info);
err_context_fb_close:
lv1_gpu_fb_close(ps3fb.context_handle);
err_context_unmap:
lv1_gpu_context_iomap(ps3fb.context_handle, GPU_IOIF, xdr_lpar,
ps3fb_videomemory.size, CBE_IOPTE_M);
err_free_irq:
free_irq(ps3fb.irq_no, &dev->core);
err_destroy_plug:
ps3_irq_plug_destroy(ps3fb.irq_no);
err_iounmap_dinfo:
iounmap((u8 __force __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_close_device:
ps3_close_hv_device(dev);
err:
return retval;
}
static int ps3fb_shutdown(struct ps3_system_bus_device *dev)
{
struct fb_info *info = ps3_system_bus_get_drvdata(dev);
u64 xdr_lpar = ps3_mm_phys_to_lpar(__pa(ps3fb_videomemory.address));
dev_dbg(&dev->core, " -> %s:%d\n", __func__, __LINE__);
atomic_inc(&ps3fb.ext_flip); /* flip off */
ps3fb.dinfo->irq.mask = 0;
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->core);
ps3_irq_plug_destroy(ps3fb.irq_no);
}
if (info) {
unregister_framebuffer(info);
fb_dealloc_cmap(&info->cmap);
framebuffer_release(info);
ps3_system_bus_set_drvdata(dev, NULL);
}
iounmap((u8 __force __iomem *)ps3fb.dinfo);
lv1_gpu_fb_close(ps3fb.context_handle);
lv1_gpu_context_iomap(ps3fb.context_handle, GPU_IOIF, xdr_lpar,
ps3fb_videomemory.size, CBE_IOPTE_M);
lv1_gpu_context_free(ps3fb.context_handle);
lv1_gpu_memory_free(ps3fb.memory_handle);
ps3_close_hv_device(dev);
dev_dbg(&dev->core, " <- %s:%d\n", __func__, __LINE__);
return 0;
}
static struct ps3_system_bus_driver ps3fb_driver = {
.match_id = PS3_MATCH_ID_GPU,
.match_sub_id = PS3_MATCH_SUB_ID_GPU_FB,
.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)
{
pr_debug(" -> %s:%d\n", __func__, __LINE__);
ps3_system_bus_driver_unregister(&ps3fb_driver);
pr_debug(" <- %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_GPU_FB);
Reference in a new issue Copy permalink