Changeset ee06f2a in mainline for kernel/genarch/src/drivers/ega/ega.c

Timestamp:

2009-02-15T15:28:00Z (15 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

2d96f4d

Parents:

e7f2ad68

Message:

Introduce a more platform-neutral name for programmed I/O.

The new API looks like pio_read_n() or pio_write_n(), where n is 8, 16 or 32.
The old API (i.e. inb(), inw(), inl(), outb() outw(), outl()) may have made
some people think that the interface is only to be used with the separate I/O
space. That's not the case. This API is to be implemented on all platforms
so that we can finally have really generic kernel device drivers.

File:

• kernel/genarch/src/drivers/ega/ega.c (modified) (1 diff)

kernel/genarch/src/drivers/ega/ega.c

@@ -84 +84 @@
 static void ega_move_cursor(void)
 {
-        outb(ega_base + EGA_INDEX_REG, 0xe);
-        outb(ega_base + EGA_DATA_REG, (uint8_t) ((ega_cursor >> 8) & 0xff));
-        outb(ega_base + EGA_INDEX_REG, 0xf);
-        outb(ega_base + EGA_DATA_REG, (uint8_t) (ega_cursor & 0xff));   
+        pio_write_8(ega_base + EGA_INDEX_REG, 0xe);
+        pio_write_8(ega_base + EGA_DATA_REG, (uint8_t) ((ega_cursor >> 8) & 0xff));
+        pio_write_8(ega_base + EGA_INDEX_REG, 0xf);
+        pio_write_8(ega_base + EGA_DATA_REG, (uint8_t) (ega_cursor & 0xff));    
 }