Once again, explanation behind the patch. We are a bit lazy, so such
things help alot. :-)
2006-01-07 Samuel Thibault <[EMAIL PROTECTED]>
* iopb.c: Include <device/io_req.h> for io_req_t. New "io" device.
(ioopen): New function.
(ioclose): Likewise.
(io_bitmap_set): Treat special (-1) bit list as "all ports".
(io_bitmap_clear): Likewise.
diff -urp gnumach-mine-5-io_per_task/i386/i386/iopb.c
gnumach-mine-6-io_device/i386/i386/iopb.c
--- gnumach-mine-5-io_per_task/i386/i386/iopb.c 2005-12-29 23:42:34.000000000
+0100
+++ gnumach-mine-6-io_device/i386/i386/iopb.c 2006-01-07 00:19:24.000000000
+0100
@@ -38,6 +38,7 @@
#include <kern/thread.h>
#include <device/dev_hdr.h>
+#include <device/io_req.h>
#include "io_port.h"
#include "iopb.h"
@@ -82,6 +83,32 @@
decl_simple_lock_data(, iopb_lock)
/*
+ * Special "all I/O ports" device.
+ */
+mach_device_t io_device = 0;
+
+int ioopen(dev, flag, ior)
+ int dev;
+ int flag;
+ io_req_t ior;
+{
+ io_device = ior->io_device;
+
+ io_port_create(io_device, (io_reg_t *)(-1));
+ return (0);
+}
+
+int
+ioclose(dev, flags)
+ int dev;
+ int flags;
+{
+ io_port_destroy(io_device);
+ io_device = 0;
+ return 0;
+}
+
+/*
* Initialize the package.
*/
void
@@ -130,9 +157,12 @@ io_bitmap_set(
{
io_reg_t io_bit;
- while ((io_bit = *bit_list++) != IO_REG_NULL) {
- bp[io_bit>>3] &= ~(1 << (io_bit & 0x7));
- }
+ if (bit_list == (io_reg_t *)(-1))
+ memset(bp, 0, IOPB_BYTES);
+ else
+ while ((io_bit = *bit_list++) != IO_REG_NULL) {
+ bp[io_bit>>3] &= ~(1 << (io_bit & 0x7));
+ }
}
/*
@@ -145,9 +175,12 @@ io_bitmap_clear(
{
io_reg_t io_bit;
- while ((io_bit = *bit_list++) != IO_REG_NULL) {
- bp[io_bit>>3] |= (1 << (io_bit & 0x7));
- }
+ if (bit_list == (io_reg_t *)(-1))
+ memset(bp, ~0, IOPB_BYTES);
+ else
+ while ((io_bit = *bit_list++) != IO_REG_NULL) {
+ bp[io_bit>>3] |= (1 << (io_bit & 0x7));
+ }
}
/*
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