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hvm.c
(13.09 KB)
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pv.c
(18.06 KB)
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pvcpu_enum.c
(6.84 KB)
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xen_apic.c
(11.96 KB)
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xen_intr.c
(43.65 KB)
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xen_msi.c
(3.15 KB)
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xen_nexus.c
(4.31 KB)
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xen_pci_bus.c
(2.95 KB)
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xenpv.c
(5.29 KB)
Editing: xen_msi.c
/* * Copyright (c) 2014 Roger Pau Monné <roger.pau@citrix.com> * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include <sys/cdefs.h> __FBSDID("$FreeBSD$"); #include <sys/param.h> #include <sys/bus.h> #include <sys/kernel.h> #include <sys/limits.h> #include <sys/lock.h> #include <sys/malloc.h> #include <sys/mutex.h> #include <sys/sx.h> #include <sys/systm.h> #include <x86/apicreg.h> #include <machine/cputypes.h> #include <machine/md_var.h> #include <machine/frame.h> #include <machine/intr_machdep.h> #include <x86/apicvar.h> #include <machine/specialreg.h> #include <dev/pci/pcivar.h> #include <xen/xen-os.h> #include <xen/xen_intr.h> #include <xen/xen_msi.h> static struct mtx msi_lock; static u_int msi_last_irq; void xen_msi_init(void) { MPASS(num_io_irqs > 0); first_msi_irq = num_io_irqs; if (num_msi_irqs > UINT_MAX - first_msi_irq) panic("num_msi_irqs too high"); num_io_irqs = first_msi_irq + num_msi_irqs; mtx_init(&msi_lock, "msi", NULL, MTX_DEF); } /* * Try to allocate 'count' interrupt sources with contiguous IDT values. */ int xen_msi_alloc(device_t dev, int count, int maxcount, int *irqs) { int i, ret = 0; mtx_lock(&msi_lock); /* If we would exceed the max, give up. */ if (msi_last_irq + count > num_msi_irqs) { mtx_unlock(&msi_lock); return (ENXIO); } /* Allocate MSI vectors */ for (i = 0; i < count; i++) irqs[i] = first_msi_irq + msi_last_irq++; mtx_unlock(&msi_lock); ret = xen_register_msi(dev, irqs[0], count); if (ret != 0) return (ret); for (i = 0; i < count; i++) nexus_add_irq(irqs[i]); return (0); } int xen_msi_release(int *irqs, int count) { int i, ret; for (i = 0; i < count; i++) { ret = xen_release_msi(irqs[i]); if (ret != 0) return (ret); } return (0); } int xen_msi_map(int irq, uint64_t *addr, uint32_t *data) { return (0); } int xen_msix_alloc(device_t dev, int *irq) { return (ENXIO); } int xen_msix_release(int irq) { return (ENOENT); }
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