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-rw-r--r--arch/sparc64/prom/console.c146
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;
+ }
+}