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Anonymous committed 2befe9c

gpu: ion: Modify reserve function for carveouts with no start address

This patch allows you to specify a heap that requires carveout memory
but that doesn't specify a start address. Memblock_alloc will be called
to find a location for these heaps.

Change-Id: I9c79b30e3105e796060fc74b058f04093ee5e96e
Signed-off-by: Rebecca Schultz Zavin <rebecca@android.com>

Comments (0)

Files changed (1)

drivers/gpu/ion/ion.c

 
 void __init ion_reserve(struct ion_platform_data *data)
 {
-	int i, ret;
+	int i;
 
 	for (i = 0; i < data->nr; i++) {
 		if (data->heaps[i].size == 0)
 			continue;
-		ret = memblock_reserve(data->heaps[i].base,
-				       data->heaps[i].size);
-		if (ret)
-			pr_err("memblock reserve of %x@%lx failed\n",
-			       data->heaps[i].size,
-			       data->heaps[i].base);
+
+		if (data->heaps[i].base == 0) {
+			phys_addr_t paddr;
+			paddr = memblock_alloc_base(data->heaps[i].size,
+						    data->heaps[i].align,
+						    MEMBLOCK_ALLOC_ANYWHERE);
+			if (!paddr) {
+				pr_err("%s: error allocating memblock for "
+				       "heap %d\n",
+					__func__, i);
+				continue;
+			}
+			data->heaps[i].base = paddr;
+		} else {
+			int ret = memblock_reserve(data->heaps[i].base,
+					       data->heaps[i].size);
+			if (ret)
+				pr_err("memblock reserve of %x@%lx failed\n",
+				       data->heaps[i].size,
+				       data->heaps[i].base);
+		}
+		pr_info("%s: %s reserved base %lx size %d\n", __func__,
+			data->heaps[i].name,
+			data->heaps[i].base,
+			data->heaps[i].size);
 	}
 }