Staging: hv: Add a subset of definitions from vmbus_api.h to hyperv.h
Add a subset of definitions from vmbus_api.h to hyperv.h.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Abhishek Kane <v-abkane@microsoft.com>
Signed-off-by: Hank Janssen <hjanssen@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/staging/hv/hyperv.h b/drivers/staging/hv/hyperv.h
index 3219311..22e434a 100644
--- a/drivers/staging/hv/hyperv.h
+++ b/drivers/staging/hv/hyperv.h
@@ -29,5 +29,35 @@
unsigned char data[16];
};
+#define MAX_PAGE_BUFFER_COUNT 16
+#define MAX_MULTIPAGE_BUFFER_COUNT 32 /* 128K */
+
+#pragma pack(push, 1)
+
+/* Single-page buffer */
+struct hv_page_buffer {
+ u32 len;
+ u32 offset;
+ u64 pfn;
+};
+
+/* Multiple-page buffer */
+struct hv_multipage_buffer {
+ /* Length and Offset determines the # of pfns in the array */
+ u32 len;
+ u32 offset;
+ u64 pfn_array[MAX_MULTIPAGE_BUFFER_COUNT];
+};
+
+/* 0x18 includes the proprietary packet header */
+#define MAX_PAGE_BUFFER_PACKET (0x18 + \
+ (sizeof(struct hv_page_buffer) * \
+ MAX_PAGE_BUFFER_COUNT))
+#define MAX_MULTIPAGE_BUFFER_PACKET (0x18 + \
+ sizeof(struct hv_multipage_buffer))
+
+
+#pragma pack(pop)
+
#endif /* _HYPERV_H */