MIPS: APRP: Split VPE loader into separate files.
Split the VPE functionality in preparation for adding support
for CMP platforms. Common functions remain in the original file
and a new file contains code specific to platforms that do not
have a CMP present.
Signed-off-by: Deng-Cheng Zhu <dengcheng.zhu@imgtec.com>
Signed-off-by: Steven J. Hill <Steven.Hill@imgtec.com>
Reviewed-by: Qais Yousef <Qais.Yousef@imgtec.com>
Signed-off-by: John Crispin <blogic@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/6094/
diff --git a/arch/mips/include/asm/vpe.h b/arch/mips/include/asm/vpe.h
index c6e1b96..becd555 100644
--- a/arch/mips/include/asm/vpe.h
+++ b/arch/mips/include/asm/vpe.h
@@ -1,5 +1,6 @@
/*
* Copyright (C) 2005 MIPS Technologies, Inc. All rights reserved.
+ * Copyright (C) 2013 Imagination Technologies Ltd.
*
* This program is free software; you can distribute it and/or modify it
* under the terms of the GNU General Public License (Version 2) as
@@ -19,6 +20,88 @@
#ifndef _ASM_VPE_H
#define _ASM_VPE_H
+#include <linux/init.h>
+#include <linux/list.h>
+#include <linux/smp.h>
+#include <linux/spinlock.h>
+
+#define VPE_MODULE_NAME "vpe"
+#define VPE_MODULE_MINOR 1
+
+/* grab the likely amount of memory we will need. */
+#ifdef CONFIG_MIPS_VPE_LOADER_TOM
+#define P_SIZE (2 * 1024 * 1024)
+#else
+/* add an overhead to the max kmalloc size for non-striped symbols/etc */
+#define P_SIZE (256 * 1024)
+#endif
+
+#define MAX_VPES 16
+#define VPE_PATH_MAX 256
+
+static inline int aprp_cpu_index(void)
+{
+#ifdef CONFIG_MIPS_CMP
+ return setup_max_cpus;
+#else
+ extern int tclimit;
+ return tclimit;
+#endif
+}
+
+enum vpe_state {
+ VPE_STATE_UNUSED = 0,
+ VPE_STATE_INUSE,
+ VPE_STATE_RUNNING
+};
+
+enum tc_state {
+ TC_STATE_UNUSED = 0,
+ TC_STATE_INUSE,
+ TC_STATE_RUNNING,
+ TC_STATE_DYNAMIC
+};
+
+struct vpe {
+ enum vpe_state state;
+
+ /* (device) minor associated with this vpe */
+ int minor;
+
+ /* elfloader stuff */
+ void *load_addr;
+ unsigned long len;
+ char *pbuffer;
+ unsigned long plen;
+ unsigned int uid, gid;
+ char cwd[VPE_PATH_MAX];
+
+ unsigned long __start;
+
+ /* tc's associated with this vpe */
+ struct list_head tc;
+
+ /* The list of vpe's */
+ struct list_head list;
+
+ /* shared symbol address */
+ void *shared_ptr;
+
+ /* the list of who wants to know when something major happens */
+ struct list_head notify;
+
+ unsigned int ntcs;
+};
+
+struct tc {
+ enum tc_state state;
+ int index;
+
+ struct vpe *pvpe; /* parent VPE */
+ struct list_head tc; /* The list of TC's with this VPE */
+ struct list_head list; /* The global list of tc's */
+};
+
struct vpe_notifications {
void (*start)(int vpe);
void (*stop)(int vpe);
@@ -26,12 +109,36 @@
struct list_head list;
};
+struct vpe_control {
+ spinlock_t vpe_list_lock;
+ struct list_head vpe_list; /* Virtual processing elements */
+ spinlock_t tc_list_lock;
+ struct list_head tc_list; /* Thread contexts */
+};
-extern int vpe_notify(int index, struct vpe_notifications *notify);
+extern unsigned long physical_memsize;
+extern struct vpe_control vpecontrol;
+extern const struct file_operations vpe_fops;
-extern void *vpe_get_shared(int index);
-extern int vpe_getuid(int index);
-extern int vpe_getgid(int index);
-extern char *vpe_getcwd(int index);
+int vpe_notify(int index, struct vpe_notifications *notify);
+void *vpe_get_shared(int index);
+int vpe_getuid(int index);
+int vpe_getgid(int index);
+char *vpe_getcwd(int index);
+
+struct vpe *get_vpe(int minor);
+struct tc *get_tc(int index);
+struct vpe *alloc_vpe(int minor);
+struct tc *alloc_tc(int index);
+void release_vpe(struct vpe *v);
+
+void *alloc_progmem(unsigned long len);
+void release_progmem(void *ptr);
+
+int __weak vpe_run(struct vpe *v);
+void cleanup_tc(struct tc *tc);
+
+int __init vpe_module_init(void);
+void __exit vpe_module_exit(void);
#endif /* _ASM_VPE_H */