1/* $NetBSD: aapic.c,v 1.7 2008/07/09 21:07:55 joerg Exp $ */ 2 3#include <sys/cdefs.h> 4__KERNEL_RCSID(0, "$NetBSD: aapic.c,v 1.7 2008/07/09 21:07:55 joerg Exp $"); 5 6#include <sys/param.h> 7#include <sys/systm.h> 8#include <sys/kernel.h> 9#include <sys/device.h> 10 11#include <dev/pci/pcireg.h> 12#include <dev/pci/pcivar.h> 13#include <dev/pci/pcidevs.h> 14 15#include <arch/x86/pci/amd8131reg.h> 16 17#include "ioapic.h" 18 19#if NIOAPIC > 0 20extern int nioapics; 21#endif 22 23static int aapic_match(device_t, cfdata_t, void *); 24static void aapic_attach(device_t, device_t, void *); 25 26CFATTACH_DECL_NEW(aapic, 0, aapic_match, aapic_attach, NULL, NULL); 27 28static int 29aapic_match(device_t parent, cfdata_t match, void *aux) 30{ 31 struct pci_attach_args *pa = aux; 32 33 if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_AMD && 34 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_AMD_PCIX8131_APIC) 35 return (1); 36 37 return (0); 38} 39 40static void 41aapic_attach(device_t parent, device_t self, void *aux) 42{ 43 struct pci_attach_args *pa = aux; 44 char devinfo[256]; 45 int bus, dev, func, rev; 46 pcitag_t tag; 47 pcireg_t reg; 48 49 pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo, sizeof(devinfo)); 50 rev = PCI_REVISION(pa->pa_class); 51 aprint_naive("\n"); 52 aprint_normal(": %s (rev. 0x%02x)\n", devinfo, rev); 53 54#if NIOAPIC > 0 55 if (nioapics == 0) 56 return; 57#else 58 return; 59#endif 60 61 reg = pci_conf_read(pa->pa_pc, pa->pa_tag, AMD8131_IOAPIC_CTL); 62 reg |= AMD8131_IOAEN; 63 pci_conf_write(pa->pa_pc, pa->pa_tag, AMD8131_IOAPIC_CTL, reg); 64 65 pci_decompose_tag(pa->pa_pc, pa->pa_tag, &bus, &dev, &func); 66 func = 0; 67 tag = pci_make_tag(pa->pa_pc, bus, dev, func); 68 reg = pci_conf_read(pa->pa_pc, tag, AMD8131_PCIX_MISC); 69 reg &= ~AMD8131_NIOAMODE; 70 pci_conf_write(pa->pa_pc, tag, AMD8131_PCIX_MISC, reg); 71} 72