This commit was manufactured by cvs2svn to create branch 'vserver'.

[linux-2.6.git] / drivers / xen / tpmback / common.h

diff --git a/drivers/xen/tpmback/common.h b/drivers/xen/tpmback/common.h
new file mode 100644 (file)
index 0000000..27b8fd2
--- /dev/null
+++ b/drivers/xen/tpmback/common.h
@@ -0,0 +1,85 @@
+/******************************************************************************
+ * drivers/xen/tpmback/common.h
+ */
+
+#ifndef __NETIF__BACKEND__COMMON_H__
+#define __NETIF__BACKEND__COMMON_H__
+
+#include <linux/config.h>
+#include <linux/version.h>
+#include <linux/module.h>
+#include <linux/interrupt.h>
+#include <linux/slab.h>
+#include <xen/evtchn.h>
+#include <xen/driver_util.h>
+#include <xen/interface/grant_table.h>
+#include <xen/interface/io/tpmif.h>
+#include <asm/io.h>
+#include <asm/pgalloc.h>
+
+#define DPRINTK(_f, _a...)                     \
+       pr_debug("(file=%s, line=%d) " _f,      \
+                __FILE__ , __LINE__ , ## _a )
+
+struct backend_info;
+
+typedef struct tpmif_st {
+       struct list_head tpmif_list;
+       /* Unique identifier for this interface. */
+       domid_t domid;
+       unsigned int handle;
+
+       /* Physical parameters of the comms window. */
+       unsigned int evtchn;
+       unsigned int irq;
+
+       /* The shared rings and indexes. */
+       tpmif_tx_interface_t *tx;
+       struct vm_struct *tx_area;
+
+       /* Miscellaneous private stuff. */
+       enum { DISCONNECTED, DISCONNECTING, CONNECTED } status;
+       int active;
+
+       struct tpmif_st *hash_next;
+       struct list_head list;  /* scheduling list */
+       atomic_t refcnt;
+
+       struct backend_info *bi;
+       unsigned long mmap_vstart;
+
+       grant_handle_t shmem_handle;
+       grant_ref_t shmem_ref;
+       struct page *pagerange;
+
+       char devname[20];
+} tpmif_t;
+
+void tpmif_disconnect_complete(tpmif_t * tpmif);
+tpmif_t *tpmif_find(domid_t domid, struct backend_info *bi);
+void tpmif_interface_init(void);
+void tpmif_interface_exit(void);
+void tpmif_schedule_work(tpmif_t * tpmif);
+void tpmif_deschedule_work(tpmif_t * tpmif);
+void tpmif_xenbus_init(void);
+void tpmif_xenbus_exit(void);
+int tpmif_map(tpmif_t *tpmif, unsigned long shared_page, unsigned int evtchn);
+irqreturn_t tpmif_be_int(int irq, void *dev_id, struct pt_regs *regs);
+
+long int tpmback_get_instance(struct backend_info *bi);
+
+int vtpm_release_packets(tpmif_t * tpmif, int send_msgs);
+
+
+#define tpmif_get(_b) (atomic_inc(&(_b)->refcnt))
+#define tpmif_put(_b)                                  \
+       do {                                            \
+               if (atomic_dec_and_test(&(_b)->refcnt)) \
+                       tpmif_disconnect_complete(_b);  \
+       } while (0)
+
+extern int num_frontends;
+
+#define MMAP_VADDR(t,_req) ((t)->mmap_vstart + ((_req) * PAGE_SIZE))
+
+#endif /* __TPMIF__BACKEND__COMMON_H__ */