1 files changed, 146 insertions, 0 deletions

diff --git a/arch/sparc64/prom/console.c b/arch/sparc64/prom/console.c
new file mode 100644
index 000000000000..028a53fcb1ec
--- /dev/null
+++ b/arch/sparc64/prom/console.c
@@ -0,0 +1,146 @@
+/* $Id: console.c,v 1.9 1997/10/29 07:41:43 ecd Exp $
+ * console.c: Routines that deal with sending and receiving IO
+ *            to/from the current console device using the PROM.
+ *
+ * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
+ * Copyright (C) 1996,1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
+ */
+
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <asm/openprom.h>
+#include <asm/oplib.h>
+#include <asm/system.h>
+#include <linux/string.h>
+
+extern int prom_stdin, prom_stdout;
+
+/* Non blocking get character from console input device, returns -1
+ * if no input was taken.  This can be used for polling.
+ */
+__inline__ int
+prom_nbgetchar(void)
+{
+        char inc;
+
+        if (p1275_cmd("read", P1275_ARG(1,P1275_ARG_OUT_BUF)|
+                              P1275_INOUT(3,1),
+                              prom_stdin, &inc, P1275_SIZE(1)) == 1)
+                return inc;
+        else
+                return -1;
+}
+
+/* Non blocking put character to console device, returns -1 if
+ * unsuccessful.
+ */
+__inline__ int
+prom_nbputchar(char c)
+{
+        char outc;
+        
+        outc = c;
+        if (p1275_cmd("write", P1275_ARG(1,P1275_ARG_IN_BUF)|
+                               P1275_INOUT(3,1),
+                               prom_stdout, &outc, P1275_SIZE(1)) == 1)
+                return 0;
+        else
+                return -1;
+}
+
+/* Blocking version of get character routine above. */
+char
+prom_getchar(void)
+{
+        int character;
+        while((character = prom_nbgetchar()) == -1) ;
+        return (char) character;
+}
+
+/* Blocking version of put character routine above. */
+void
+prom_putchar(char c)
+{
+        prom_nbputchar(c);
+        return;
+}
+
+void
+prom_puts(char *s, int len)
+{
+        p1275_cmd("write", P1275_ARG(1,P1275_ARG_IN_BUF)|
+                           P1275_INOUT(3,1),
+                           prom_stdout, s, P1275_SIZE(len));
+}
+
+/* Query for input device type */
+enum prom_input_device
+prom_query_input_device(void)
+{
+        int st_p;
+        char propb[64];
+
+        st_p = prom_inst2pkg(prom_stdin);
+        if(prom_node_has_property(st_p, "keyboard"))
+                return PROMDEV_IKBD;
+        prom_getproperty(st_p, "device_type", propb, sizeof(propb));
+        if(strncmp(propb, "serial", 6))
+                return PROMDEV_I_UNK;
+        /* FIXME: Is there any better way how to find out? */   
+        memset(propb, 0, sizeof(propb));
+        st_p = prom_finddevice ("/options");
+        prom_getproperty(st_p, "input-device", propb, sizeof(propb));
+
+        /*
+         * If we get here with propb == 'keyboard', we are on ttya, as
+         * the PROM defaulted to this due to 'no input device'.
+         */
+        if (!strncmp(propb, "keyboard", 8))
+                return PROMDEV_ITTYA;
+
+        if (strncmp (propb, "tty", 3) || !propb[3])
+                return PROMDEV_I_UNK;
+        switch (propb[3]) {
+                case 'a': return PROMDEV_ITTYA;
+                case 'b': return PROMDEV_ITTYB;
+                default: return PROMDEV_I_UNK;
+        }
+}
+
+/* Query for output device type */
+
+enum prom_output_device
+prom_query_output_device(void)
+{
+        int st_p;
+        char propb[64];
+        int propl;
+
+        st_p = prom_inst2pkg(prom_stdout);
+        propl = prom_getproperty(st_p, "device_type", propb, sizeof(propb));
+        if (propl >= 0 && propl == sizeof("display") &&
+            strncmp("display", propb, sizeof("display")) == 0)
+                return PROMDEV_OSCREEN;
+        if(strncmp("serial", propb, 6))
+                return PROMDEV_O_UNK;
+        /* FIXME: Is there any better way how to find out? */   
+        memset(propb, 0, sizeof(propb));
+        st_p = prom_finddevice ("/options");
+        prom_getproperty(st_p, "output-device", propb, sizeof(propb));
+
+        /*
+         * If we get here with propb == 'screen', we are on ttya, as
+         * the PROM defaulted to this due to 'no input device'.
+         */
+        if (!strncmp(propb, "screen", 6))
+                return PROMDEV_OTTYA;
+
+        if (strncmp (propb, "tty", 3) || !propb[3])
+                return PROMDEV_O_UNK;
+        switch (propb[3]) {
+                case 'a': return PROMDEV_OTTYA;
+                case 'b': return PROMDEV_OTTYB;
+                default: return PROMDEV_O_UNK;
+        }
+}