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/param.h> 34 #include <sys/bus.h> 35 #include <sys/kernel.h> 36 #include <sys/linker.h> 37 #include <sys/lock.h> 38 #include <sys/malloc.h> 39 #include <sys/module.h> 40 #include <sys/mutex.h> 41 #include <sys/sbuf.h> 42 #include <sys/smp.h> 43 #include <sys/sysctl.h> 44 #include <sys/systm.h> 45 #include <sys/taskqueue.h> 46 47 #include <vm/vm.h> 48 #include <vm/vm_param.h> 49 #include <vm/pmap.h> 50 51 #include <machine/bus.h> 52 #include <machine/metadata.h> 53 #include <machine/md_var.h> 54 #include <machine/resource.h> 55 #include <contrib/dev/acpica/include/acpi.h> 56 #include <dev/acpica/acpivar.h> 57 58 #include <dev/hyperv/include/hyperv.h> 59 #include <dev/hyperv/include/vmbus_xact.h> 60 #include <dev/hyperv/vmbus/hyperv_var.h> 61 #include <dev/hyperv/vmbus/vmbus_reg.h> 62 #include <dev/hyperv/vmbus/vmbus_var.h> 63 #include <dev/hyperv/vmbus/vmbus_chanvar.h> 64 #include <dev/hyperv/vmbus/aarch64/hyperv_machdep.h> 65 #include <dev/hyperv/vmbus/aarch64/hyperv_reg.h> 66 #include <dev/hyperv/vmbus/hyperv_common_reg.h> 67 #include "acpi_if.h" 68 #include "pcib_if.h" 69 #include "vmbus_if.h" 70 71 static int vmbus_handle_intr_new(void *); 72 73 void vmbus_handle_timer_intr1(struct vmbus_message *msg_base, 74 struct trapframe *frame); 75 void vmbus_synic_setup1(void *xsc); 76 void vmbus_synic_teardown1(void); 77 int vmbus_setup_intr1(struct vmbus_softc *sc); 78 void vmbus_intr_teardown1(struct vmbus_softc *sc); 79 80 void 81 vmbus_handle_timer_intr1(struct vmbus_message *msg_base, 82 struct trapframe *frame) 83 { 84 // do nothing for arm64, as we are using generic timer 85 return; 86 } 87 88 static int 89 vmbus_handle_intr_new(void *arg) 90 { 91 vmbus_handle_intr(NULL); 92 return (FILTER_HANDLED); 93 } 94 95 void 96 vmbus_synic_setup1(void *xsc) 97 { 98 return; 99 } 100 101 void 102 vmbus_synic_teardown1(void) 103 { 104 return; 105 } 106 107 int 108 vmbus_setup_intr1(struct vmbus_softc *sc) 109 { 110 int err; 111 struct intr_map_data_acpi *irq_data; 112 device_t dev; 113 114 dev = devclass_get_device(devclass_find("vmbus_res"), 0); 115 sc->ires = bus_alloc_resource_any(dev, 116 SYS_RES_IRQ, &sc->vector, RF_ACTIVE | RF_SHAREABLE); 117 if (sc->ires == NULL) { 118 device_printf(sc->vmbus_dev, "bus_alloc_resouce_any failed\n"); 119 return (ENXIO); 120 } else { 121 device_printf(sc->vmbus_dev, "irq 0x%lx, vector %d end 0x%lx\n", 122 (uint64_t)rman_get_start(sc->ires), sc->vector, 123 (uint64_t)rman_get_end(sc->ires)); 124 } 125 err = bus_setup_intr(sc->vmbus_dev, sc->ires, INTR_TYPE_MISC | INTR_MPSAFE, 126 vmbus_handle_intr_new, NULL, sc, &sc->icookie); 127 if (err) { 128 device_printf(sc->vmbus_dev, "failed to setup IRQ %d\n", err); 129 return (err); 130 } 131 irq_data = (struct intr_map_data_acpi *)rman_get_virtual(sc->ires); 132 device_printf(sc->vmbus_dev, "the irq %u\n", irq_data->irq); 133 sc->vmbus_idtvec = irq_data->irq; 134 return 0; 135 } 136 137 void 138 vmbus_intr_teardown1(struct vmbus_softc *sc) 139 { 140 int cpu; 141 142 sc->vmbus_idtvec = -1; 143 bus_teardown_intr(sc->vmbus_dev, sc->ires, sc->icookie); 144 145 CPU_FOREACH(cpu) { 146 if (VMBUS_PCPU_GET(sc, event_tq, cpu) != NULL) { 147 taskqueue_free(VMBUS_PCPU_GET(sc, event_tq, cpu)); 148 VMBUS_PCPU_GET(sc, event_tq, cpu) = NULL; 149 } 150 if (VMBUS_PCPU_GET(sc, message_tq, cpu) != NULL) { 151 taskqueue_drain(VMBUS_PCPU_GET(sc, message_tq, cpu), 152 VMBUS_PCPU_PTR(sc, message_task, cpu)); 153 taskqueue_free(VMBUS_PCPU_GET(sc, message_tq, cpu)); 154 VMBUS_PCPU_GET(sc, message_tq, cpu) = NULL; 155 } 156 } 157 } 158