linux 2.6.16.38 w/ vs2.0.3-rc1

[linux-2.6.git] / include / asm-powerpc / hvconsole.h

diff --git a/include/asm-powerpc/hvconsole.h b/include/asm-powerpc/hvconsole.h
index 35ea69e..34daf7b 100644 (file)
--- a/include/asm-powerpc/hvconsole.h
+++ b/include/asm-powerpc/hvconsole.h
@@ -24,18 +24,28 @@
 #ifdef __KERNEL__
 
 /*
- * PSeries firmware will only send/recv up to 16 bytes of character data per
- * hcall.
+ * This is the max number of console adapters that can/will be found as
+ * console devices on first stage console init.  Any number beyond this range
+ * can't be used as a console device but is still a valid tty device.
  */
-#define MAX_VIO_PUT_CHARS      16
-#define SIZE_VIO_GET_CHARS     16
+#define MAX_NR_HVC_CONSOLES    16
 
-/*
- * Vio firmware always attempts to fetch MAX_VIO_GET_CHARS chars.  The 'count'
- * parm is included to conform to put_chars() function pointer template
- */
+/* implemented by a low level driver */
+struct hv_ops {
+       int (*get_chars)(uint32_t vtermno, char *buf, int count);
+       int (*put_chars)(uint32_t vtermno, const char *buf, int count);
+};
 extern int hvc_get_chars(uint32_t vtermno, char *buf, int count);
 extern int hvc_put_chars(uint32_t vtermno, const char *buf, int count);
 
+struct hvc_struct;
+
+/* Register a vterm and a slot index for use as a console (console_init) */
+extern int hvc_instantiate(uint32_t vtermno, int index, struct hv_ops *ops);
+/* register a vterm for hvc tty operation (module_init or hotplug add) */
+extern struct hvc_struct * __devinit hvc_alloc(uint32_t vtermno, int irq,
+                                                struct hv_ops *ops);
+/* remove a vterm from hvc tty operation (modele_exit or hotplug remove) */
+extern int __devexit hvc_remove(struct hvc_struct *hp);
 #endif /* __KERNEL__ */
 #endif /* _PPC64_HVCONSOLE_H */