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authorIan Wisbon <ian.wisbon@timesys.com>2011-02-10 17:15:15 -0500
committerIan Wisbon <ian.wisbon@timesys.com>2011-02-14 14:29:06 -0500
commit14a4057959f8ee0a2249eb2abd64fd6b1f571d98 (patch)
tree6df655a665a5a56bd6b7cae5e2689fc5a1b6c965 /include/linux/android_pmem.h
parent0eb553bf96e2c990d3bfccaa07da0863624c89ab (diff)
Digi Release Code - 02142011 Missing Files Fix2.6.31-digi-201102141503
Diffstat (limited to 'include/linux/android_pmem.h')
-rw-r--r--include/linux/android_pmem.h97
1 files changed, 97 insertions, 0 deletions
diff --git a/include/linux/android_pmem.h b/include/linux/android_pmem.h
new file mode 100644
index 000000000000..31bd4594baaa
--- /dev/null
+++ b/include/linux/android_pmem.h
@@ -0,0 +1,97 @@
+/* include/linux/android_pmem.h
+ *
+ * Copyright (C) 2007 Google, Inc.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#ifndef _ANDROID_PMEM_H_
+#define _ANDROID_PMEM_H_
+
+#define PMEM_IOCTL_MAGIC 'p'
+#define PMEM_GET_PHYS _IOW(PMEM_IOCTL_MAGIC, 1, unsigned int)
+#define PMEM_MAP _IOW(PMEM_IOCTL_MAGIC, 2, unsigned int)
+#define PMEM_GET_SIZE _IOW(PMEM_IOCTL_MAGIC, 3, unsigned int)
+#define PMEM_UNMAP _IOW(PMEM_IOCTL_MAGIC, 4, unsigned int)
+/* This ioctl will allocate pmem space, backing the file, it will fail
+ * if the file already has an allocation, pass it the len as the argument
+ * to the ioctl */
+#define PMEM_ALLOCATE _IOW(PMEM_IOCTL_MAGIC, 5, unsigned int)
+/* This will connect a one pmem file to another, pass the file that is already
+ * backed in memory as the argument to the ioctl
+ */
+#define PMEM_CONNECT _IOW(PMEM_IOCTL_MAGIC, 6, unsigned int)
+/* Returns the total size of the pmem region it is sent to as a pmem_region
+ * struct (with offset set to 0).
+ */
+#define PMEM_GET_TOTAL_SIZE _IOW(PMEM_IOCTL_MAGIC, 7, unsigned int)
+#define PMEM_CACHE_FLUSH _IOW(PMEM_IOCTL_MAGIC, 8, unsigned int)
+
+struct android_pmem_platform_data
+{
+ const char* name;
+ /* starting physical address of memory region */
+ unsigned long start;
+ /* size of memory region */
+ unsigned long size;
+ /* set to indicate the region should not be managed with an allocator */
+ unsigned no_allocator;
+ /* set to indicate maps of this region should be cached, if a mix of
+ * cached and uncached is desired, set this and open the device with
+ * O_SYNC to get an uncached region */
+ unsigned cached;
+ /* The MSM7k has bits to enable a write buffer in the bus controller*/
+ unsigned buffered;
+};
+
+#define PMEM_NONCACHE_NORMAL 1 /* normal type memory(main memory, SDRAM,DDR,...), cache disable, writebuffer enbale */
+#define PMEM_NONCACHE_DEVICE 2 /* strongly ordered type memory (io, registers ...), cache disable, writebuffer disable */
+#define PMEM_CACHE_ENABLE 3 /* normal type memory, cache enable, writebuffer enable, (for arm v7 writeback non-writealloc) */
+
+struct pmem_region {
+ unsigned long offset;
+ unsigned long len;
+};
+
+#ifdef CONFIG_ANDROID_PMEM
+int is_pmem_file(struct file *file);
+int get_pmem_file(int fd, unsigned long *start, unsigned long *vstart,
+ unsigned long *end, struct file **filp);
+int get_pmem_user_addr(struct file *file, unsigned long *start,
+ unsigned long *end);
+void put_pmem_file(struct file* file);
+void flush_pmem_file(struct file *file, unsigned long start, unsigned long len);
+int pmem_setup(struct android_pmem_platform_data *pdata,
+ long (*ioctl)(struct file *, unsigned int, unsigned long),
+ int (*release)(struct inode *, struct file *));
+int pmem_remap(struct pmem_region *region, struct file *file,
+ unsigned operation);
+
+#else
+static inline int is_pmem_file(struct file *file) { return 0; }
+static inline int get_pmem_file(int fd, unsigned long *start,
+ unsigned long *vstart, unsigned long *end,
+ struct file **filp) { return -ENOSYS; }
+static inline int get_pmem_user_addr(struct file *file, unsigned long *start,
+ unsigned long *end) { return -ENOSYS; }
+static inline void put_pmem_file(struct file* file) { return; }
+static inline void flush_pmem_file(struct file *file, unsigned long start,
+ unsigned long len) { return; }
+static inline int pmem_setup(struct android_pmem_platform_data *pdata,
+ long (*ioctl)(struct file *, unsigned int, unsigned long),
+ int (*release)(struct inode *, struct file *)) { return -ENOSYS; }
+
+static inline int pmem_remap(struct pmem_region *region, struct file *file,
+ unsigned operation) { return -ENOSYS; }
+#endif
+
+#endif //_ANDROID_PPP_H_
+