1 files changed, 94 insertions, 0 deletions

diff --git a/arch/powerpc/include/asm/hvsi.h b/arch/powerpc/include/asm/hvsi.h
new file mode 100644
index 000000000000..d3f64f361814
--- /dev/null
+++ b/arch/powerpc/include/asm/hvsi.h
@@ -0,0 +1,94 @@
+#ifndef _HVSI_H
+#define _HVSI_H
+
+#define VS_DATA_PACKET_HEADER           0xff
+#define VS_CONTROL_PACKET_HEADER        0xfe
+#define VS_QUERY_PACKET_HEADER          0xfd
+#define VS_QUERY_RESPONSE_PACKET_HEADER 0xfc
+
+/* control verbs */
+#define VSV_SET_MODEM_CTL    1 /* to service processor only */
+#define VSV_MODEM_CTL_UPDATE 2 /* from service processor only */
+#define VSV_CLOSE_PROTOCOL   3
+
+/* query verbs */
+#define VSV_SEND_VERSION_NUMBER 1
+#define VSV_SEND_MODEM_CTL_STATUS 2
+
+/* yes, these masks are not consecutive. */
+#define HVSI_TSDTR 0x01
+#define HVSI_TSCD  0x20
+
+#define HVSI_MAX_OUTGOING_DATA 12
+#define HVSI_VERSION 1
+
+struct hvsi_header {
+        uint8_t  type;
+        uint8_t  len;
+        uint16_t seqno;
+} __attribute__((packed));
+
+struct hvsi_data {
+        struct hvsi_header hdr;
+        uint8_t  data[HVSI_MAX_OUTGOING_DATA];
+} __attribute__((packed));
+
+struct hvsi_control {
+        struct hvsi_header hdr;
+        uint16_t verb;
+        /* optional depending on verb: */
+        uint32_t word;
+        uint32_t mask;
+} __attribute__((packed));
+
+struct hvsi_query {
+        struct hvsi_header hdr;
+        uint16_t verb;
+} __attribute__((packed));
+
+struct hvsi_query_response {
+        struct hvsi_header hdr;
+        uint16_t verb;
+        uint16_t query_seqno;
+        union {
+                uint8_t  version;
+                uint32_t mctrl_word;
+        } u;
+} __attribute__((packed));
+
+/* hvsi lib struct definitions */
+#define HVSI_INBUF_SIZE         255
+struct tty_struct;
+struct hvsi_priv {
+        unsigned int    inbuf_len;      /* data in input buffer */
+        unsigned char   inbuf[HVSI_INBUF_SIZE];
+        unsigned int    inbuf_cur;      /* Cursor in input buffer */
+        unsigned int    inbuf_pktlen;   /* packet lenght from cursor */
+        atomic_t        seqno;          /* packet sequence number */
+        unsigned int    opened:1;       /* driver opened */
+        unsigned int    established:1;  /* protocol established */
+        unsigned int    is_console:1;   /* used as a kernel console device */
+        unsigned int    mctrl_update:1; /* modem control updated */
+        unsigned short  mctrl;          /* modem control */
+        struct tty_struct *tty;         /* tty structure */
+        int (*get_chars)(uint32_t termno, char *buf, int count);
+        int (*put_chars)(uint32_t termno, const char *buf, int count);
+        uint32_t        termno;
+};
+
+/* hvsi lib functions */
+struct hvc_struct;
+extern void hvsilib_init(struct hvsi_priv *pv,
+                         int (*get_chars)(uint32_t termno, char *buf, int count),
+                         int (*put_chars)(uint32_t termno, const char *buf,
+                                          int count),
+                         int termno, int is_console);
+extern int hvsilib_open(struct hvsi_priv *pv, struct hvc_struct *hp);
+extern void hvsilib_close(struct hvsi_priv *pv, struct hvc_struct *hp);
+extern int hvsilib_read_mctrl(struct hvsi_priv *pv);
+extern int hvsilib_write_mctrl(struct hvsi_priv *pv, int dtr);
+extern void hvsilib_establish(struct hvsi_priv *pv);
+extern int hvsilib_get_chars(struct hvsi_priv *pv, char *buf, int count);
+extern int hvsilib_put_chars(struct hvsi_priv *pv, const char *buf, int count);
+
+#endif /* _HVSI_H */