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Commit e4805922 authored by Olaf Hering's avatar Olaf Hering Committed by Paul Mackerras
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[POWERPC] Add correct interrupt property for pegasos ide 



The firmware assigns irq 20/21 to the VIA IDE device on Pegasos.
But the required interrupt is 14/15.
Maybe someone confused decimal vs. hexadecimal values.

Signed-off-by: default avatarOlaf Hering <olaf@aepfle.de>
Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
parent 9c1a2bae

arch/powerpc/kernel/prom_init.c

+33 −22
Original line number Diff line number Diff line
@@ -2035,39 +2035,50 @@ static void __init fixup_device_tree_maple(void) 
#endif



#ifdef CONFIG_PPC_CHRP

/* Pegasos and BriQ lacks the "ranges" property in the isa node */

/*

 * Pegasos and BriQ lacks the "ranges" property in the isa node

 * Pegasos needs decimal IRQ 14/15, not hexadecimal

 */

static void __init fixup_device_tree_chrp(void)

{

	phandle isa;

	u32 isa_ranges[6];

	phandle ph;

	u32 prop[6];

	u32 rloc = 0x01006000; /* IO space; PCI device = 12 */

	char *name;

	int rc;



	name = "/pci@80000000/isa@c";

	isa = call_prom("finddevice", 1, 1, ADDR(name));

	if (!PHANDLE_VALID(isa)) {

	ph = call_prom("finddevice", 1, 1, ADDR(name));

	if (!PHANDLE_VALID(ph)) {

		name = "/pci@ff500000/isa@6";

		isa = call_prom("finddevice", 1, 1, ADDR(name));

		ph = call_prom("finddevice", 1, 1, ADDR(name));

		rloc = 0x01003000; /* IO space; PCI device = 6 */

	}

	if (!PHANDLE_VALID(isa))

		return;



	rc = prom_getproplen(isa, "ranges");

	if (rc != 0 && rc != PROM_ERROR)

		return;



	if (PHANDLE_VALID(ph)) {

		rc = prom_getproplen(ph, "ranges");

		if (rc == 0 || rc == PROM_ERROR) {

			prom_printf("Fixing up missing ISA range on Pegasos...\n");



	isa_ranges[0] = 0x1;

	isa_ranges[1] = 0x0;

	isa_ranges[2] = rloc;

	isa_ranges[3] = 0x0;

	isa_ranges[4] = 0x0;

	isa_ranges[5] = 0x00010000;

	prom_setprop(isa, name, "ranges",

			isa_ranges, sizeof(isa_ranges));

			prop[0] = 0x1;

			prop[1] = 0x0;

			prop[2] = rloc;

			prop[3] = 0x0;

			prop[4] = 0x0;

			prop[5] = 0x00010000;

			prom_setprop(ph, name, "ranges", prop, sizeof(prop));

		}

	}



	name = "/pci@80000000/ide@C,1";

	ph = call_prom("finddevice", 1, 1, ADDR(name));

	if (PHANDLE_VALID(ph)) {

		prom_printf("Fixing up IDE interrupt on Pegasos...\n");

		prop[0] = 14;

		prop[1] = 0x0;

		prop[2] = 15;

		prop[3] = 0x0;

		prom_setprop(ph, name, "interrupts", prop, 4*sizeof(u32));

	}

}

#else

#define fixup_device_tree_chrp()

drivers/ide/pci/via82cxxx.c

+0 −11
Original line number Diff line number Diff line
@@ -35,10 +35,6 @@ 
#include <linux/ide.h>

#include <asm/io.h>



#ifdef CONFIG_PPC_CHRP

#include <asm/processor.h>

#endif



#include "ide-timing.h"



#define DISPLAY_VIA_TIMINGS
@@ -436,13 +432,6 @@ static void __devinit init_hwif_via82cxxx(ide_hwif_t *hwif) 
	hwif->tuneproc = &via82cxxx_tune_drive;

	hwif->speedproc = &via_set_drive;





#ifdef CONFIG_PPC_CHRP

	if(machine_is(chrp) && _chrp_type == _CHRP_Pegasos) {

		hwif->irq = hwif->channel ? 15 : 14;

	}

#endif



	for (i = 0; i < 2; i++) {

		hwif->drives[i].io_32bit = 1;

		hwif->drives[i].unmask = (vdev->via_config->flags & VIA_NO_UNMASK) ? 0 : 1;