1 /*- SPDX-License-Identifier: BSD-2-Clause 2 * Copyright (c) 2009-2012,2016-2017, 2022 Microsoft Corp. 3 * Copyright (c) 2012 NetApp Inc. 4 * Copyright (c) 2012 Citrix Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice unmodified, this list of conditions, and the following 12 * disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 /* 30 * VM Bus Driver Implementation 31 */ 32 33 #include <sys/cdefs.h> 34 __FBSDID("$FreeBSD$"); 35 36 #include <sys/param.h> 37 #include <sys/bus.h> 38 #include <sys/kernel.h> 39 #include <sys/linker.h> 40 #include <sys/lock.h> 41 #include <sys/malloc.h> 42 #include <sys/module.h> 43 #include <sys/mutex.h> 44 #include <sys/sbuf.h> 45 #include <sys/smp.h> 46 #include <sys/sysctl.h> 47 #include <sys/systm.h> 48 #include <sys/taskqueue.h> 49 50 #include <vm/vm.h> 51 #include <vm/vm_param.h> 52 #include <vm/pmap.h> 53 54 #include <machine/bus.h> 55 #include <machine/metadata.h> 56 #include <machine/md_var.h> 57 #include <machine/resource.h> 58 #include <contrib/dev/acpica/include/acpi.h> 59 #include <dev/acpica/acpivar.h> 60 61 #include <dev/hyperv/include/hyperv.h> 62 #include <dev/hyperv/include/vmbus_xact.h> 63 #include <dev/hyperv/vmbus/hyperv_var.h> 64 #include <dev/hyperv/vmbus/vmbus_reg.h> 65 #include <dev/hyperv/vmbus/vmbus_var.h> 66 #include <dev/hyperv/vmbus/vmbus_chanvar.h> 67 #include <dev/hyperv/vmbus/aarch64/hyperv_machdep.h> 68 #include <dev/hyperv/vmbus/aarch64/hyperv_reg.h> 69 #include <dev/hyperv/vmbus/hyperv_common_reg.h> 70 #include "acpi_if.h" 71 #include "pcib_if.h" 72 #include "vmbus_if.h" 73 74 static int vmbus_handle_intr_new(void *); 75 76 void vmbus_handle_timer_intr1(struct vmbus_message *msg_base, 77 struct trapframe *frame); 78 void vmbus_synic_setup1(void *xsc); 79 void vmbus_synic_teardown1(void); 80 int vmbus_setup_intr1(struct vmbus_softc *sc); 81 void vmbus_intr_teardown1(struct vmbus_softc *sc); 82 83 void 84 vmbus_handle_timer_intr1(struct vmbus_message *msg_base, 85 struct trapframe *frame) 86 { 87 // do nothing for arm64, as we are using generic timer 88 return; 89 } 90 91 static int 92 vmbus_handle_intr_new(void *arg) 93 { 94 vmbus_handle_intr(NULL); 95 return (FILTER_HANDLED); 96 } 97 98 void 99 vmbus_synic_setup1(void *xsc) 100 { 101 return; 102 } 103 104 void 105 vmbus_synic_teardown1(void) 106 { 107 return; 108 } 109 110 int 111 vmbus_setup_intr1(struct vmbus_softc *sc) 112 { 113 int err; 114 struct intr_map_data_acpi *irq_data; 115 device_t dev; 116 117 dev = devclass_get_device(devclass_find("vmbus_res"), 0); 118 sc->ires = bus_alloc_resource_any(dev, 119 SYS_RES_IRQ, &sc->vector, RF_ACTIVE | RF_SHAREABLE); 120 if (sc->ires == NULL) { 121 device_printf(sc->vmbus_dev, "bus_alloc_resouce_any failed\n"); 122 return (ENXIO); 123 } else { 124 device_printf(sc->vmbus_dev, "irq 0x%lx, vector %d end 0x%lx\n", 125 (uint64_t)rman_get_start(sc->ires), sc->vector, 126 (uint64_t)rman_get_end(sc->ires)); 127 } 128 err = bus_setup_intr(sc->vmbus_dev, sc->ires, INTR_TYPE_MISC | INTR_MPSAFE, 129 vmbus_handle_intr_new, NULL, sc, &sc->icookie); 130 if (err) { 131 device_printf(sc->vmbus_dev, "failed to setup IRQ %d\n", err); 132 return (err); 133 } 134 irq_data = (struct intr_map_data_acpi *)rman_get_virtual(sc->ires); 135 device_printf(sc->vmbus_dev, "the irq %u\n", irq_data->irq); 136 sc->vmbus_idtvec = irq_data->irq; 137 return 0; 138 } 139 140 void 141 vmbus_intr_teardown1(struct vmbus_softc *sc) 142 { 143 int cpu; 144 145 sc->vmbus_idtvec = -1; 146 bus_teardown_intr(sc->vmbus_dev, sc->ires, sc->icookie); 147 148 CPU_FOREACH(cpu) { 149 if (VMBUS_PCPU_GET(sc, event_tq, cpu) != NULL) { 150 taskqueue_free(VMBUS_PCPU_GET(sc, event_tq, cpu)); 151 VMBUS_PCPU_GET(sc, event_tq, cpu) = NULL; 152 } 153 if (VMBUS_PCPU_GET(sc, message_tq, cpu) != NULL) { 154 taskqueue_drain(VMBUS_PCPU_GET(sc, message_tq, cpu), 155 VMBUS_PCPU_PTR(sc, message_task, cpu)); 156 taskqueue_free(VMBUS_PCPU_GET(sc, message_tq, cpu)); 157 VMBUS_PCPU_GET(sc, message_tq, cpu) = NULL; 158 } 159 } 160 } 161