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x86: restrict keyboard io ports reservation to make ipmi driver work

On some of our (single board computer) boards (x86) we are using an
IPMI controller that uses I/O ports 0x62 and 0x66 for a KCS (keyboard
controller style) IPMI system interface.

Trying to load the openipmi driver fails, because the ports
(0x62/0x66) are reserved for keyboard. keyboard reserves the full
range 0x60-0x6F while it doesn't need to.

Reserve only ports 0x60 and 0x64 for the legacy PS/2 i8042 keyboad
controller instead of 0x60-0x6F to allow the openipmi driver to work.

[ tglx: added 64bit fixup ]

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Helge Wagner 17 years ago
parent
commit
9096bd7a66
2 changed files with 9 additions and 2 deletions
  1. 6 1
      arch/x86/kernel/setup_32.c
  2. 3 1
      arch/x86/kernel/setup_64.c

+ 6 - 1
arch/x86/kernel/setup_32.c

@@ -127,7 +127,12 @@ static struct resource standard_io_resources[] = { {
 }, {
 	.name	= "keyboard",
 	.start	= 0x0060,
-	.end	= 0x006f,
+	.end	= 0x0060,
+	.flags	= IORESOURCE_BUSY | IORESOURCE_IO
+}, {
+	.name	= "keyboard",
+	.start	= 0x0064,
+	.end	= 0x0064,
 	.flags	= IORESOURCE_BUSY | IORESOURCE_IO
 }, {
 	.name	= "dma page reg",

+ 3 - 1
arch/x86/kernel/setup_64.c

@@ -129,7 +129,9 @@ static struct resource standard_io_resources[] = {
 		.flags = IORESOURCE_BUSY | IORESOURCE_IO },
 	{ .name = "timer1", .start = 0x50, .end = 0x53,
 		.flags = IORESOURCE_BUSY | IORESOURCE_IO },
-	{ .name = "keyboard", .start = 0x60, .end = 0x6f,
+	{ .name = "keyboard", .start = 0x60, .end = 0x60,
+		.flags = IORESOURCE_BUSY | IORESOURCE_IO },
+	{ .name = "keyboard", .start = 0x64, .end = 0x64,
 		.flags = IORESOURCE_BUSY | IORESOURCE_IO },
 	{ .name = "dma page reg", .start = 0x80, .end = 0x8f,
 		.flags = IORESOURCE_BUSY | IORESOURCE_IO },