ioapic.c (bf21cd93) | ioapic.c (4c87aefe) |
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1/*- | 1/*- |
2 * Copyright (c) 2014 Advanced Computing Technologies LLC | 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2014 Hudson River Trading LLC |
3 * Written by: John H. Baldwin <jhb@FreeBSD.org> 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. --- 10 unchanged lines hidden (view full) --- 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28#include <sys/cdefs.h> | 5 * Written by: John H. Baldwin <jhb@FreeBSD.org> 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. --- 10 unchanged lines hidden (view full) --- 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30#include <sys/cdefs.h> |
29__FBSDID("$FreeBSD: head/usr.sbin/bhyve/ioapic.c 261268 2014-01-29 14:56:48Z jhb $"); | 31__FBSDID("$FreeBSD$"); |
30 31#include <sys/types.h> | 32 33#include <sys/types.h> |
34#include <stdio.h> |
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32 33#include <machine/vmm.h> 34#include <vmmapi.h> 35 36#include "ioapic.h" | 35 36#include <machine/vmm.h> 37#include <vmmapi.h> 38 39#include "ioapic.h" |
40#include "pci_emul.h" 41#include "pci_lpc.h" |
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37 38/* 39 * Assign PCI INTx interrupts to I/O APIC pins in a round-robin 40 * fashion. Note that we have no idea what the HPET is using, but the 41 * HPET is also programmable whereas this is intended for hardwired 42 * PCI interrupts. 43 * 44 * This assumes a single I/O APIC where pins >= 16 are permitted for --- 14 unchanged lines hidden (view full) --- 59 if (pci_pins <= 16) { 60 pci_pins = 0; 61 return; 62 } 63 pci_pins -= 16; 64} 65 66int | 42 43/* 44 * Assign PCI INTx interrupts to I/O APIC pins in a round-robin 45 * fashion. Note that we have no idea what the HPET is using, but the 46 * HPET is also programmable whereas this is intended for hardwired 47 * PCI interrupts. 48 * 49 * This assumes a single I/O APIC where pins >= 16 are permitted for --- 14 unchanged lines hidden (view full) --- 64 if (pci_pins <= 16) { 65 pci_pins = 0; 66 return; 67 } 68 pci_pins -= 16; 69} 70 71int |
67ioapic_pci_alloc_irq(void) | 72ioapic_pci_alloc_irq(struct pci_devinst *pi) |
68{ 69 static int last_pin; 70 71 if (pci_pins == 0) 72 return (-1); | 73{ 74 static int last_pin; 75 76 if (pci_pins == 0) 77 return (-1); |
78 if (lpc_bootrom()) { 79 /* For external bootrom use fixed mapping. */ 80 return (16 + (4 + pi->pi_slot + pi->pi_lintr.pin) % 8); 81 } |
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73 return (16 + (last_pin++ % pci_pins)); 74} | 82 return (16 + (last_pin++ % pci_pins)); 83} |