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aapic.c revision 1.6 
      1 /* 	$NetBSD: aapic.c,v 1.6 2008/07/09 21:07:25 joerg Exp $	*/
      2 
      3 #include <sys/cdefs.h>
      4 __KERNEL_RCSID(0, "$NetBSD: aapic.c,v 1.6 2008/07/09 21:07:25 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
     20 extern int nioapics;
     21 #endif
     22 
     23 static int	aapic_match(device_t, cfdata_t, void *));
     24 static void	aapic_attach(device_t, device_t, void *));
     25 
     26 CFATTACH_DECL_NEW(aapic, 0, aapic_match, aapic_attach, NULL, NULL);
     27 
     28 static int
     29 aapic_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 
     40 static void
     41 aapic_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 	printf(": %s (rev. 0x%02x)\n", devinfo, rev);
     52 
     53 #if NIOAPIC > 0
     54 	if (nioapics == 0)
     55 		return;
     56 #else
     57 	return;
     58 #endif
     59 
     60 	reg = pci_conf_read(pa->pa_pc, pa->pa_tag, AMD8131_IOAPIC_CTL);
     61 	reg |= AMD8131_IOAEN;
     62 	pci_conf_write(pa->pa_pc, pa->pa_tag, AMD8131_IOAPIC_CTL, reg);
     63 
     64 	pci_decompose_tag(pa->pa_pc, pa->pa_tag, &bus, &dev, &func);
     65 	func = 0;
     66 	tag = pci_make_tag(pa->pa_pc, bus, dev, func);
     67 	reg = pci_conf_read(pa->pa_pc, tag, AMD8131_PCIX_MISC);
     68 	reg &= ~AMD8131_NIOAMODE;
     69 	pci_conf_write(pa->pa_pc, tag, AMD8131_PCIX_MISC, reg);
     70 }
     71