From 0333d83509c7d8496c8965b5ba9bc0c98e83c259 Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Tue, 16 Oct 2007 01:29:48 -0700 Subject: [PATCH] ps3fb: use fb_info.par properly ps3fb: Use fb_info.par properly: o Move mode-specific fields into struct ps3fb_par o Allocate struct ps3fb_par using framebuffer_alloc() o Protect access to ps3fb_par in ps3fb_sync() using the console semaphore (this semaphore is already held when ps3fb_set_par() is called) o Avoid calling ps3av_set_video_mode() if the actual video mode hasn't changed Signed-off-by: Geert Uytterhoeven Cc: "Antonino A. Daplas" Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/video/ps3fb.c | 92 +++++++++++++++++++++++++++---------------- 1 file changed, 57 insertions(+), 35 deletions(-) diff --git a/drivers/video/ps3fb.c b/drivers/video/ps3fb.c index 8bbe479f73f7..d6160e016b33 100644 --- a/drivers/video/ps3fb.c +++ b/drivers/video/ps3fb.c @@ -119,12 +119,10 @@ struct ps3fb_priv { void *xdr_ea; size_t xdr_size; 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; @@ -133,6 +131,13 @@ struct ps3fb_priv { }; static struct ps3fb_priv ps3fb; +struct ps3fb_par { + u32 pseudo_palette[16]; + int mode_id, new_mode_id; + int res_index; + unsigned int num_frames; /* num of frame buffers */ +}; + struct ps3fb_res_table { u32 xres; u32 yres; @@ -361,18 +366,17 @@ static unsigned int ps3fb_find_mode(const struct fb_var_screeninfo *var, pr_debug("ps3fb_find_mode: mode not found\n"); return 0; - } -static const struct fb_videomode *ps3fb_default_mode(void) +static const struct fb_videomode *ps3fb_default_mode(int id) { - u32 mode = ps3fb_mode & PS3AV_MODE_MASK; + u32 mode = id & PS3AV_MODE_MASK; u32 flags; if (mode < 1 || mode > 13) return NULL; - flags = ps3fb_mode & ~PS3AV_MODE_MASK; + flags = id & ~PS3AV_MODE_MASK; if (mode <= 10 && flags & PS3FB_FULL_MODE_BIT) { /* Full broadcast mode */ @@ -384,18 +388,22 @@ static const struct fb_videomode *ps3fb_default_mode(void) static int ps3fb_sync(struct fb_info *info, u32 frame) { - int i, status; + struct ps3fb_par *par = info->par; + int i, status, error = 0; u32 xres, yres; u64 fb_ioif, offset; - i = ps3fb.res_index; + acquire_console_sem(); + + i = par->res_index; xres = ps3fb_res[i].xres; yres = ps3fb_res[i].yres; - if (frame > ps3fb.num_frames - 1) { + if (frame > par->num_frames - 1) { dev_dbg(info->device, "%s: invalid frame number (%u)\n", __func__, frame); - return -EINVAL; + error = -EINVAL; + goto out; } offset = xres * yres * BPP * frame; @@ -428,7 +436,10 @@ static int ps3fb_sync(struct fb_info *info, u32 frame) "%s: lv1_gpu_context_attribute FLIP failed: %d\n", __func__, status); #endif - return 0; + +out: + release_console_sem(); + return error; } @@ -547,6 +558,7 @@ static int ps3fb_check_var(struct fb_var_screeninfo *var, struct fb_info *info) static int ps3fb_set_par(struct fb_info *info) { + struct ps3fb_par *par = info->par; unsigned int mode; int i; unsigned long offset; @@ -560,7 +572,7 @@ static int ps3fb_set_par(struct fb_info *info) return -EINVAL; i = ps3fb_get_res_table(info->var.xres, info->var.yres, mode); - ps3fb.res_index = i; + par->res_index = i; offset = VFB_OFF(i); info->fix.smem_start = virt_to_abs(ps3fb.xdr_ea) + offset; @@ -568,14 +580,19 @@ static int ps3fb_set_par(struct fb_info *info) info->screen_base = (char __iomem *)ps3fb.xdr_ea + offset; memset(ps3fb.xdr_ea, 0, ps3fb.xdr_size); - ps3fb.num_frames = info->fix.smem_len/ - (ps3fb_res[i].xres*ps3fb_res[i].yres*BPP); + par->num_frames = info->fix.smem_len/ + (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; + par->new_mode_id = (par->new_mode_id & ~PS3AV_MODE_MASK) | mode; - if (ps3av_set_video_mode(ps3fb_mode)) - return -EINVAL; + 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; + } return 0; } @@ -694,7 +711,7 @@ static int ps3fb_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg) { void __user *argp = (void __user *)arg; - u32 val, old_mode; + u32 val; int retval = -EFAULT; switch (cmd) { @@ -724,6 +741,7 @@ static int ps3fb_ioctl(struct fb_info *info, unsigned int cmd, case PS3FB_IOCTL_SETMODE: { + struct ps3fb_par *par = info->par; const struct fb_videomode *mode; struct fb_var_screeninfo var; @@ -737,9 +755,7 @@ static int ps3fb_ioctl(struct fb_info *info, unsigned int cmd, } dev_dbg(info->device, "PS3FB_IOCTL_SETMODE:%x\n", val); retval = -EINVAL; - old_mode = ps3fb_mode; - ps3fb_mode = val; - mode = ps3fb_default_mode(); + mode = ps3fb_default_mode(val); if (mode) { var = info->var; fb_videomode_to_var(&var, mode); @@ -747,12 +763,11 @@ static int ps3fb_ioctl(struct fb_info *info, unsigned int cmd, 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; release_console_sem(); } - if (retval) - ps3fb_mode = old_mode; break; } @@ -765,14 +780,15 @@ static int ps3fb_ioctl(struct fb_info *info, unsigned int cmd, case PS3FB_IOCTL_SCREENINFO: { + struct ps3fb_par *par = info->par; struct ps3fb_ioctl_res res; - int i = ps3fb.res_index; + int i = par->res_index; dev_dbg(info->device, "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; + res.num_frames = par->num_frames; if (!copy_to_user(argp, &res, sizeof(res))) retval = 0; break; @@ -979,6 +995,7 @@ static int ps3fb_set_sync(struct device *dev) static int __devinit ps3fb_probe(struct ps3_system_bus_device *dev) { struct fb_info *info; + struct ps3fb_par *par; int retval = -ENOMEM; u32 xres, yres; u64 ddr_lpar = 0; @@ -987,7 +1004,7 @@ static int __devinit ps3fb_probe(struct ps3_system_bus_device *dev) u64 lpar_reports = 0; u64 lpar_reports_size = 0; u64 xdr_lpar; - int status; + int status, res_index; unsigned long offset; struct task_struct *task; @@ -1004,15 +1021,14 @@ static int __devinit ps3fb_probe(struct ps3_system_bus_device *dev) if (ps3fb_mode > 0 && !ps3av_video_mode2res(ps3fb_mode, &xres, &yres)) { - ps3fb.res_index = ps3fb_get_res_table(xres, yres, ps3fb_mode); - dev_dbg(&dev->core, "res_index:%d\n", ps3fb.res_index); + res_index = ps3fb_get_res_table(xres, yres, ps3fb_mode); + dev_dbg(&dev->core, "res_index:%d\n", res_index); } else - ps3fb.res_index = GPU_RES_INDEX; + 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(&dev->core); @@ -1062,19 +1078,24 @@ static int __devinit ps3fb_probe(struct ps3_system_bus_device *dev) if (retval) goto err_free_irq; - info = framebuffer_alloc(sizeof(u32) * 16, &dev->core); + info = framebuffer_alloc(sizeof(struct ps3fb_par), &dev->core); if (!info) goto err_free_irq; - offset = VFB_OFF(ps3fb.res_index); + par = info->par; + par->mode_id = ~ps3fb_mode; /* != ps3fb_mode, to trigger change */ + par->new_mode_id = ps3fb_mode; + par->res_index = res_index; + par->num_frames = 1; + + offset = VFB_OFF(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) + offset; info->fix.smem_len = ps3fb.xdr_size - offset; - info->pseudo_palette = info->par; - info->par = NULL; + info->pseudo_palette = par->pseudo_palette; info->flags = FBINFO_DEFAULT | FBINFO_READS_FAST; retval = fb_alloc_cmap(&info->cmap, 256, 0); @@ -1082,7 +1103,8 @@ static int __devinit ps3fb_probe(struct ps3_system_bus_device *dev) goto err_framebuffer_release; if (!fb_find_mode(&info->var, info, mode_option, ps3fb_modedb, - ARRAY_SIZE(ps3fb_modedb), ps3fb_default_mode(), 32)) { + ARRAY_SIZE(ps3fb_modedb), + ps3fb_default_mode(par->new_mode_id), 32)) { retval = -EINVAL; goto err_fb_dealloc; } -- 2.20.1