Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / include / linux / fsl / bestcomm / sram.h

diff --git a/kernel/include/linux/fsl/bestcomm/sram.h b/kernel/include/linux/fsl/bestcomm/sram.h
new file mode 100644 (file)
index 0000000..b6d6689
--- /dev/null
+++ b/kernel/include/linux/fsl/bestcomm/sram.h
@@ -0,0 +1,54 @@
+/*
+ * Handling of a sram zone for bestcomm
+ *
+ *
+ * Copyright (C) 2007 Sylvain Munaut <tnt@246tNt.com>
+ *
+ * This file is licensed under the terms of the GNU General Public License
+ * version 2. This program is licensed "as is" without any warranty of any
+ * kind, whether express or implied.
+ */
+
+#ifndef __BESTCOMM_SRAM_H__
+#define __BESTCOMM_SRAM_H__
+
+#include <asm/rheap.h>
+#include <asm/mmu.h>
+#include <linux/spinlock.h>
+
+
+/* Structure used internally */
+       /* The internals are here for the inline functions
+        * sake, certainly not for the user to mess with !
+        */
+struct bcom_sram {
+       phys_addr_t              base_phys;
+       void                    *base_virt;
+       unsigned int             size;
+       rh_info_t               *rh;
+       spinlock_t               lock;
+};
+
+extern struct bcom_sram *bcom_sram;
+
+
+/* Public API */
+extern int  bcom_sram_init(struct device_node *sram_node, char *owner);
+extern void bcom_sram_cleanup(void);
+
+extern void* bcom_sram_alloc(int size, int align, phys_addr_t *phys);
+extern void  bcom_sram_free(void *ptr);
+
+static inline phys_addr_t bcom_sram_va2pa(void *va) {
+       return bcom_sram->base_phys +
+               (unsigned long)(va - bcom_sram->base_virt);
+}
+
+static inline void *bcom_sram_pa2va(phys_addr_t pa) {
+       return bcom_sram->base_virt +
+               (unsigned long)(pa - bcom_sram->base_phys);
+}
+
+
+#endif  /* __BESTCOMM_SRAM_H__ */
+