Changeset 93b84b3 in mainline for arch/mips32/src/drivers/serial.c

Timestamp:

2005-12-12T16:30:07Z (20 years ago)

Author:

Ondrej Palkovsky <ondrap@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

ebbdb8f

Parents:

af9a7c5

Message:

Fixed weird simics panic.
Run kconsole, if we panic. This currently works in gxemul,
simics. In mips we need to modify the simulator.
On ia32 we need a function, that would speak directly to the chip
and fetch the character using polling.

File:

• arch/mips32/src/drivers/serial.c (modified) (2 diffs)

arch/mips32/src/drivers/serial.c

@@ -72 +72 @@
 }
 
-static chardev_operations_t serial_ops = {
-        .resume = serial_enable,
-        .suspend = serial_disable,
-        .write = serial_write
-};
+/** Read character from serial port, wait until available */
+static char serial_do_read(chardev_t *dev)
+{
+        serial_t *sd = (serial_t *)dev->data;
+        char ch;
+
+        while (!(SERIAL_READ_LSR(sd->port) & 1))
+                ;
+        ch = SERIAL_READ(sd->port);
+
+        if (ch =='\r')
+                ch = '\n';
+        return ch;
+}
+
 
 /** Process keyboard interrupt. Does not work in simics? */
@@ -93 +103 @@
 }
 
+
+
+static chardev_operations_t serial_ops = {
+        .resume = serial_enable,
+        .suspend = serial_disable,
+        .write = serial_write,
+        .read = serial_do_read
+};
 
 iroutine old_timer;