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Annotation of sys/arch/amd64/pci/aapic.c, Revision 1.1.1.1

1.1       nbrk        1: /*     $OpenBSD: aapic.c,v 1.3 2007/01/15 23:19:05 jsg Exp $   */
                      2: /*     $NetBSD: aapic.c,v 1.3 2005/01/13 23:40:01 fvdl Exp $   */
                      3:
                      4: /*
                      5:  * The AMD 8131 IO APIC can hang the box when an APIC IRQ is masked.
                      6:  */
                      7:
                      8: #if 0
                      9: #include <sys/cdefs.h>
                     10: __KERNEL_RCSID(0, "$NetBSD: aapic.c,v 1.3 2005/01/13 23:40:01 fvdl Exp $");
                     11: #endif
                     12:
                     13: #include <sys/param.h>
                     14: #include <sys/systm.h>
                     15: #include <sys/kernel.h>
                     16: #include <sys/device.h>
                     17:
                     18: #include <dev/pci/pcireg.h>
                     19: #include <dev/pci/pcivar.h>
                     20: #include <dev/pci/pcidevs.h>
                     21:
                     22: #include <arch/amd64/pci/amd8131reg.h>
                     23:
                     24: #include "ioapic.h"
                     25:
                     26: #if NIOAPIC > 0
                     27: extern int nioapics;
                     28: #endif
                     29:
                     30: int    aapic_match(struct device *, void *, void *);
                     31: void   aapic_attach(struct device *, struct device *, void *);
                     32:
                     33: struct aapic_softc {
                     34:        struct device sc_dev;
                     35: };
                     36:
                     37: struct cfattach aapic_ca = {
                     38:        sizeof(struct aapic_softc), aapic_match, aapic_attach
                     39: };
                     40:
                     41: struct cfdriver aapic_cd = {
                     42:        0, "aapic", DV_DULL
                     43: };
                     44:
                     45: int
                     46: aapic_match(struct device *parent, void *match, void *aux)
                     47: {
                     48:        struct pci_attach_args *pa = aux;
                     49:
                     50:        if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_AMD &&
                     51:            PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_AMD_8131_PCIX_IOAPIC)
                     52:                return (1);
                     53:
                     54:        return (0);
                     55: }
                     56:
                     57: void
                     58: aapic_attach(struct device *parent, struct device *self, void *aux)
                     59: {
                     60:        struct pci_attach_args *pa = aux;
                     61:        int bus, dev, func;
                     62:        pcitag_t tag;
                     63:        pcireg_t reg;
                     64:
                     65:        printf("\n");
                     66:
                     67: #if NIOAPIC > 0
                     68:        if (nioapics == 0)
                     69:                return;
                     70: #else
                     71:        return;
                     72: #endif
                     73:
                     74:        reg = pci_conf_read(pa->pa_pc, pa->pa_tag, AMD8131_IOAPIC_CTL);
                     75:        reg |= AMD8131_IOAEN;
                     76:        pci_conf_write(pa->pa_pc, pa->pa_tag, AMD8131_IOAPIC_CTL, reg);
                     77:
                     78:        pci_decompose_tag(pa->pa_pc, pa->pa_tag, &bus, &dev, &func);
                     79:        func = 0;
                     80:        tag = pci_make_tag(pa->pa_pc, bus, dev, func);
                     81:        reg = pci_conf_read(pa->pa_pc, tag, AMD8131_PCIX_MISC);
                     82:        reg &= ~AMD8131_NIOAMODE;
                     83:        pci_conf_write(pa->pa_pc, tag, AMD8131_PCIX_MISC, reg);
                     84: }