diff options
| -rw-r--r-- | drivers/video/ps3fb.c | 66 |
1 files changed, 39 insertions, 27 deletions
diff --git a/drivers/video/ps3fb.c b/drivers/video/ps3fb.c index 4885978dd5b..8bbe479f73f 100644 --- a/drivers/video/ps3fb.c +++ b/drivers/video/ps3fb.c @@ -52,7 +52,7 @@ #define L1GPU_DISPLAY_SYNC_VSYNC 2 #define DDR_SIZE (0) /* used no ddr */ -#define GPU_OFFSET (64 * 1024) +#define GPU_CMD_BUF_SIZE (64 * 1024) #define GPU_IOIF (0x0d000000UL) #define PS3FB_FULL_MODE_BIT 0x80 @@ -117,6 +117,7 @@ struct ps3fb_priv { u64 context_handle, memory_handle; void *xdr_ea; + size_t xdr_size; struct gpu_driver_info *dinfo; u32 res_index; @@ -280,9 +281,20 @@ static const struct fb_videomode ps3fb_modedb[] = { #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) +#define BPP 4 /* number of bytes per pixel */ + +/* Start of the virtual frame buffer (relative to fullscreen ) */ +#define VP_OFF(i) ((WIDTH(i) * Y_OFF(i) + X_OFF(i)) * BPP) + +/* + * Start of the virtual frame buffer (relative to start of video memory) + * This is PAGE_SIZE aligned for easier mmap() + */ +#define VFB_OFF(i) PAGE_ALIGN(VP_OFF(i)) + +/* Start of the fullscreen frame buffer (relative to start of video memory) */ +#define FB_OFF(i) (-VP_OFF(i) & ~PAGE_MASK) + static int ps3fb_mode; module_param(ps3fb_mode, int, 0); @@ -517,7 +529,8 @@ static int ps3fb_check_var(struct fb_var_screeninfo *var, struct fb_info *info) /* Memory limit */ i = ps3fb_get_res_table(var->xres, var->yres, mode); - if (ps3fb_res[i].xres*ps3fb_res[i].yres*BPP > ps3fb_videomemory.size) { + if (ps3fb_res[i].xres*ps3fb_res[i].yres*BPP > + ps3fb.xdr_size - VFB_OFF(i)) { dev_dbg(info->device, "Not enough memory\n"); return -ENOMEM; } @@ -549,12 +562,13 @@ static int ps3fb_set_par(struct fb_info *info) i = ps3fb_get_res_table(info->var.xres, info->var.yres, mode); ps3fb.res_index = i; - offset = FB_OFF(i) + VP_OFF(i); - info->fix.smem_len = ps3fb_videomemory.size - offset; + offset = VFB_OFF(i); + info->fix.smem_start = virt_to_abs(ps3fb.xdr_ea) + offset; + info->fix.smem_len = ps3fb.xdr_size - offset; info->screen_base = (char __iomem *)ps3fb.xdr_ea + offset; - memset(ps3fb.xdr_ea, 0, ps3fb_videomemory.size); + memset(ps3fb.xdr_ea, 0, ps3fb.xdr_size); - ps3fb.num_frames = ps3fb_videomemory.size/ + ps3fb.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 */ @@ -596,18 +610,13 @@ static int ps3fb_setcolreg(unsigned int regno, unsigned int red, 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, ps3fb_mode); - 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); + offset += info->fix.smem_start; if (remap_pfn_range(vma, vma->vm_start, offset >> PAGE_SHIFT, size, vma->vm_page_prot)) return -EAGAIN; @@ -899,8 +908,9 @@ static int ps3fb_xdr_settings(u64 xdr_lpar, struct device *dev) status = lv1_gpu_context_attribute(ps3fb.context_handle, L1GPU_CONTEXT_ATTRIBUTE_FB_SETUP, - xdr_lpar, ps3fb_videomemory.size, - GPU_IOIF, 0); + xdr_lpar + ps3fb.xdr_size, + GPU_CMD_BUF_SIZE, + GPU_IOIF + ps3fb.xdr_size, 0); if (status) { dev_err(dev, "%s: lv1_gpu_context_attribute FB_SETUP failed: %d\n", @@ -1038,29 +1048,31 @@ static int __devinit ps3fb_probe(struct ps3_system_bus_device *dev) if (retval) goto err_iounmap_dinfo; - /* xdr frame buffer */ + /* XDR frame buffer */ ps3fb.xdr_ea = ps3fb_videomemory.address; xdr_lpar = ps3_mm_phys_to_lpar(__pa(ps3fb.xdr_ea)); + + /* Clear memory to prevent kernel info leakage into userspace */ + memset(ps3fb.xdr_ea, 0, ps3fb_videomemory.size); + + /* The GPU command buffer is at the end of video memory */ + ps3fb.xdr_size = ps3fb_videomemory.size - GPU_CMD_BUF_SIZE; + retval = ps3fb_xdr_settings(xdr_lpar, &dev->core); 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); + offset = VFB_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->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->flags = FBINFO_DEFAULT | FBINFO_READS_FAST; @@ -1086,7 +1098,7 @@ static int __devinit ps3fb_probe(struct ps3_system_bus_device *dev) dev_info(info->device, "%s %s, using %lu KiB of video memory\n", dev_driver_string(info->dev), info->dev->bus_id, - ps3fb_videomemory.size >> 10); + ps3fb.xdr_size >> 10); task = kthread_run(ps3fbd, info, DEVICE_NAME); if (IS_ERR(task)) { |