L1 memory support for the Blackfin. A couple new syscalls to manage L1

allocations, dma_memcpy to move stuff between L1 and main memory, and a new
structure to describe the global data in L1 scratchpad memory.

1 files changed, 30 insertions, 0 deletions

diff --git a/libc/sysdeps/linux/bfin/bfin_sram.h b/libc/sysdeps/linux/bfin/bfin_sram.h
new file mode 100644
index 000000000..eea729b05
--- /dev/null
+++ b/libc/sysdeps/linux/bfin/bfin_sram.h
@@ -0,0 +1,30 @@
+/*
+ * bfin_sram.h - userspace interface to L1 memory allocator
+ *
+ * Copyright (c) 2007 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#ifndef __BFIN_SRAM_H__
+#define __BFIN_SRAM_H__
+
+#include <features.h>
+#include <sys/types.h>
+
+__BEGIN_DECLS
+
+#define L1_INST_SRAM            0x00000001
+#define L1_DATA_A_SRAM          0x00000002
+#define L1_DATA_B_SRAM          0x00000004
+#define L1_DATA_SRAM            0x00000006
+
+extern void *sram_alloc(size_t size, unsigned long flags)
+	__attribute_malloc__ __attribute_warn_unused_result__;
+extern int sram_free(const void *addr);
+extern void *dma_memcpy(void *dest, const void *src, size_t len)
+	__nonnull((1, 2));
+
+__END_DECLS
+
+#endif