GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

source/gmp/drv/osal/linux/kernel/mmz_arm.h

@@ -0,0 +1,62 @@
+/*
+ * Copyright (c) XMEDIA. All rights reserved.
+ */
+#ifndef __MMZ_ARCH_OPS_HEADER__
+#define __MMZ_ARCH_OPS_HEADER__
+
+#if defined(CONFIG_ARM64)
+/* this function is used to change memory's property. */
+static void dma_pages_remap(struct page *page, size_t size, pgprot_t prot) {}
+
+static void dma_buffer_clear(struct page *page, size_t size)
+{
+    memset(page_address(page), 0, size);
+    __flush_dcache_area(page_address(page), size);
+}
+
+static void mmb_dcache_flush(mmz_mmb_t *mmb)
+{
+    __flush_dcache_area((void *)mmb->kvirt, (size_t)mmb->length);
+}
+
+static pgprot_t arch_kern_pgprot(int cache)
+{
+    if (cache) {
+        return PAGE_KERNEL;
+    }
+
+    return __pgprot(PROT_NORMAL_NC);
+}
+
+#elif defined(CONFIG_ARM)
+#include <asm/highmem.h>
+#include <asm/pgtable.h>
+
+extern void __dma_clear_buffer(struct page *page, size_t size);
+
+static void dma_buffer_clear(struct page *page, size_t size)
+{
+    __dma_clear_buffer(page, size);
+}
+
+static void mmb_dcache_flush(mmz_mmb_t *mmb)
+{
+    __cpuc_flush_dcache_area((void *)mmb->kvirt, (size_t)mmb->length);
+
+    outer_flush_range(mmb->phys_addr, mmb->phys_addr + mmb->length);
+}
+
+static pgprot_t arch_kern_pgprot(int cache)
+{
+    if (cache) {
+        return pgprot_kernel;
+    }
+
+    return pgprot_noncached(pgprot_kernel);
+}
+
+#else
+#error no proper arch selected(CONFIG_ARM64/CONFIG_ARM)!
+#endif
+
+#endif