ps3fb: video memory size cleanups

- Limit video memory size to avoid crossing a 256 MiB boundary in IOIF space.
- Pass the actual amount of video memory used to lv1_gpu_memory_allocate().

Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 9 insertions, 2 deletions

diff --git a/drivers/video/ps3fb.c b/drivers/video/ps3fb.c
index 75836aa83191..9c56c492a693 100644
--- a/drivers/video/ps3fb.c
+++ b/drivers/video/ps3fb.c
@@ -51,7 +51,6 @@
 #define L1GPU_DISPLAY_SYNC_HSYNC                1
 #define L1GPU_DISPLAY_SYNC_VSYNC                2
 
-#define DDR_SIZE                                (0)     /* used no ddr */
 #define GPU_CMD_BUF_SIZE                        (64 * 1024)
 #define GPU_IOIF                                (0x0d000000UL)
 #define GPU_ALIGN_UP(x)                         _ALIGN_UP((x), 64)
@@ -1060,6 +1059,7 @@ static int __devinit ps3fb_probe(struct ps3_system_bus_device *dev)
         u64 xdr_lpar;
         int status, res_index;
         struct task_struct *task;
+        unsigned long max_ps3fb_size;
 
         status = ps3_open_hv_device(dev);
         if (status) {
@@ -1085,8 +1085,15 @@ static int __devinit ps3fb_probe(struct ps3_system_bus_device *dev)
 
         ps3fb_set_sync(&dev->core);
 
+        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(DDR_SIZE, 0, 0, 0, 0,
+        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",