| 1 | /* $NetBSD: aapic.c,v 1.8 2009/11/25 15:06:26 njoly Exp $ */ |
| 2 | |
| 3 | #include <sys/cdefs.h> |
| 4 | __KERNEL_RCSID(0, "$NetBSD: aapic.c,v 1.8 2009/11/25 15:06:26 njoly 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 | 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 | |