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Deal with broken BIOSes that leave PCI interrupts disabled.

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Thanks to nick@
This commit is contained in:
sborrill 2017-06-12 10:59:47 +00:00
parent 9f26a707da
commit 86cfc9006b
1 changed files with 8 additions and 4 deletions
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12
sys/dev/pci/ehci_pci.c
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@ -1,4 +1,4 @@
/* $NetBSD: ehci_pci.c,v 1.64 2016/10/13 20:05:06 jdolecek Exp $ */
/* $NetBSD: ehci_pci.c,v 1.65 2017/06/12 10:59:47 sborrill Exp $ */
/*
* Copyright (c) 2001, 2002 The NetBSD Foundation, Inc.
@ -30,7 +30,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: ehci_pci.c,v 1.64 2016/10/13 20:05:06 jdolecek Exp $");
__KERNEL_RCSID(0, "$NetBSD: ehci_pci.c,v 1.65 2017/06/12 10:59:47 sborrill Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -161,10 +161,14 @@ ehci_pci_attach(device_t parent, device_t self, void *aux)
break;
}
pcireg_t intr = pci_conf_read(pc, tag, PCI_INTERRUPT_REG);
int pin = PCI_INTERRUPT_PIN(intr);
/* Enable the device. */
csr = pci_conf_read(pc, tag, PCI_COMMAND_STATUS_REG);
pci_conf_write(pc, tag, PCI_COMMAND_STATUS_REG,
csr | PCI_COMMAND_MASTER_ENABLE);
csr |= PCI_COMMAND_MASTER_ENABLE;
csr &= ~(pin ? PCI_COMMAND_INTERRUPT_DISABLE : 0);
pci_conf_write(pc, tag, PCI_COMMAND_STATUS_REG, csr);
/* Map and establish the interrupt. */
if (pci_intr_map(pa, &ih)) {