72 lines
1.7 KiB
C
72 lines
1.7 KiB
C
/* $NetBSD: aapic.c,v 1.8 2009/11/25 15:06:26 njoly Exp $ */
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: aapic.c,v 1.8 2009/11/25 15:06:26 njoly Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/device.h>
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#include <dev/pci/pcireg.h>
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#include <dev/pci/pcivar.h>
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#include <dev/pci/pcidevs.h>
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#include <arch/x86/pci/amd8131reg.h>
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#include "ioapic.h"
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#if NIOAPIC > 0
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extern int nioapics;
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#endif
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static int aapic_match(device_t, cfdata_t, void *);
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static void aapic_attach(device_t, device_t, void *);
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CFATTACH_DECL_NEW(aapic, 0, aapic_match, aapic_attach, NULL, NULL);
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static int
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aapic_match(device_t parent, cfdata_t match, void *aux)
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{
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struct pci_attach_args *pa = aux;
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if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_AMD &&
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PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_AMD_PCIX8131_APIC)
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return (1);
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return (0);
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}
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static void
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aapic_attach(device_t parent, device_t self, void *aux)
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{
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struct pci_attach_args *pa = aux;
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char devinfo[256];
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int bus, dev, func, rev;
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pcitag_t tag;
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pcireg_t reg;
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pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo, sizeof(devinfo));
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rev = PCI_REVISION(pa->pa_class);
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aprint_naive("\n");
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aprint_normal(": %s (rev. 0x%02x)\n", devinfo, rev);
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#if NIOAPIC > 0
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if (nioapics == 0)
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return;
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#else
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return;
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#endif
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reg = pci_conf_read(pa->pa_pc, pa->pa_tag, AMD8131_IOAPIC_CTL);
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reg |= AMD8131_IOAEN;
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pci_conf_write(pa->pa_pc, pa->pa_tag, AMD8131_IOAPIC_CTL, reg);
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pci_decompose_tag(pa->pa_pc, pa->pa_tag, &bus, &dev, &func);
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func = 0;
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tag = pci_make_tag(pa->pa_pc, bus, dev, func);
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reg = pci_conf_read(pa->pa_pc, tag, AMD8131_PCIX_MISC);
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reg &= ~AMD8131_NIOAMODE;
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pci_conf_write(pa->pa_pc, tag, AMD8131_PCIX_MISC, reg);
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}
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