1366f6083SPeter Grehan /*- 2366f6083SPeter Grehan * Copyright (c) 2011 NetApp, Inc. 3366f6083SPeter Grehan * All rights reserved. 4366f6083SPeter Grehan * 5366f6083SPeter Grehan * Redistribution and use in source and binary forms, with or without 6366f6083SPeter Grehan * modification, are permitted provided that the following conditions 7366f6083SPeter Grehan * are met: 8366f6083SPeter Grehan * 1. Redistributions of source code must retain the above copyright 9366f6083SPeter Grehan * notice, this list of conditions and the following disclaimer. 10366f6083SPeter Grehan * 2. Redistributions in binary form must reproduce the above copyright 11366f6083SPeter Grehan * notice, this list of conditions and the following disclaimer in the 12366f6083SPeter Grehan * documentation and/or other materials provided with the distribution. 13366f6083SPeter Grehan * 14366f6083SPeter Grehan * THIS SOFTWARE IS PROVIDED BY NETAPP, INC ``AS IS'' AND 15366f6083SPeter Grehan * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16366f6083SPeter Grehan * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17366f6083SPeter Grehan * ARE DISCLAIMED. IN NO EVENT SHALL NETAPP, INC OR CONTRIBUTORS BE LIABLE 18366f6083SPeter Grehan * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19366f6083SPeter Grehan * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20366f6083SPeter Grehan * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21366f6083SPeter Grehan * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22366f6083SPeter Grehan * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23366f6083SPeter Grehan * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24366f6083SPeter Grehan * SUCH DAMAGE. 25366f6083SPeter Grehan * 26366f6083SPeter Grehan * $FreeBSD$ 27366f6083SPeter Grehan */ 28366f6083SPeter Grehan 29366f6083SPeter Grehan #include <sys/cdefs.h> 30366f6083SPeter Grehan __FBSDID("$FreeBSD$"); 31366f6083SPeter Grehan 32366f6083SPeter Grehan #include <sys/param.h> 33366f6083SPeter Grehan #include <sys/systm.h> 34366f6083SPeter Grehan #include <sys/kernel.h> 35cd942e0fSPeter Grehan #include <sys/malloc.h> 36366f6083SPeter Grehan #include <sys/module.h> 37366f6083SPeter Grehan #include <sys/bus.h> 38366f6083SPeter Grehan #include <sys/pciio.h> 39366f6083SPeter Grehan #include <sys/rman.h> 40a5615c90SPeter Grehan #include <sys/smp.h> 4151f45d01SNeel Natu #include <sys/sysctl.h> 42366f6083SPeter Grehan 43366f6083SPeter Grehan #include <dev/pci/pcivar.h> 44366f6083SPeter Grehan #include <dev/pci/pcireg.h> 45366f6083SPeter Grehan 46366f6083SPeter Grehan #include <machine/resource.h> 47366f6083SPeter Grehan 48366f6083SPeter Grehan #include <machine/vmm.h> 49366f6083SPeter Grehan #include <machine/vmm_dev.h> 50366f6083SPeter Grehan 51366f6083SPeter Grehan #include "vmm_lapic.h" 52366f6083SPeter Grehan #include "vmm_ktr.h" 53366f6083SPeter Grehan 54366f6083SPeter Grehan #include "iommu.h" 55366f6083SPeter Grehan #include "ppt.h" 56366f6083SPeter Grehan 5775dd3366SNeel Natu /* XXX locking */ 5875dd3366SNeel Natu 59366f6083SPeter Grehan #define MAX_MSIMSGS 32 60366f6083SPeter Grehan 612b89a044SNeel Natu /* 622b89a044SNeel Natu * If the MSI-X table is located in the middle of a BAR then that MMIO 632b89a044SNeel Natu * region gets split into two segments - one segment above the MSI-X table 642b89a044SNeel Natu * and the other segment below the MSI-X table - with a hole in place of 652b89a044SNeel Natu * the MSI-X table so accesses to it can be trapped and emulated. 662b89a044SNeel Natu * 672b89a044SNeel Natu * So, allocate a MMIO segment for each BAR register + 1 additional segment. 682b89a044SNeel Natu */ 692b89a044SNeel Natu #define MAX_MMIOSEGS ((PCIR_MAX_BAR_0 + 1) + 1) 702b89a044SNeel Natu 71cd942e0fSPeter Grehan MALLOC_DEFINE(M_PPTMSIX, "pptmsix", "Passthru MSI-X resources"); 72cd942e0fSPeter Grehan 73366f6083SPeter Grehan struct pptintr_arg { /* pptintr(pptintr_arg) */ 74366f6083SPeter Grehan struct pptdev *pptdev; 754f8be175SNeel Natu uint64_t addr; 764f8be175SNeel Natu uint64_t msg_data; 77366f6083SPeter Grehan }; 78366f6083SPeter Grehan 79a15f820aSRyan Stone struct pptdev { 80366f6083SPeter Grehan device_t dev; 81366f6083SPeter Grehan struct vm *vm; /* owner of this device */ 82a15f820aSRyan Stone TAILQ_ENTRY(pptdev) next; 83366f6083SPeter Grehan struct vm_memory_segment mmio[MAX_MMIOSEGS]; 84366f6083SPeter Grehan struct { 85366f6083SPeter Grehan int num_msgs; /* guest state */ 86366f6083SPeter Grehan 87366f6083SPeter Grehan int startrid; /* host state */ 88366f6083SPeter Grehan struct resource *res[MAX_MSIMSGS]; 89366f6083SPeter Grehan void *cookie[MAX_MSIMSGS]; 90366f6083SPeter Grehan struct pptintr_arg arg[MAX_MSIMSGS]; 91366f6083SPeter Grehan } msi; 92cd942e0fSPeter Grehan 93cd942e0fSPeter Grehan struct { 94cd942e0fSPeter Grehan int num_msgs; 95cd942e0fSPeter Grehan int startrid; 96cd942e0fSPeter Grehan int msix_table_rid; 97cd942e0fSPeter Grehan struct resource *msix_table_res; 98cd942e0fSPeter Grehan struct resource **res; 99cd942e0fSPeter Grehan void **cookie; 100cd942e0fSPeter Grehan struct pptintr_arg *arg; 101cd942e0fSPeter Grehan } msix; 102a15f820aSRyan Stone }; 103366f6083SPeter Grehan 10451f45d01SNeel Natu SYSCTL_DECL(_hw_vmm); 10551f45d01SNeel Natu SYSCTL_NODE(_hw_vmm, OID_AUTO, ppt, CTLFLAG_RW, 0, "bhyve passthru devices"); 10651f45d01SNeel Natu 107366f6083SPeter Grehan static int num_pptdevs; 10851f45d01SNeel Natu SYSCTL_INT(_hw_vmm_ppt, OID_AUTO, devices, CTLFLAG_RD, &num_pptdevs, 0, 10951f45d01SNeel Natu "number of pci passthru devices"); 110366f6083SPeter Grehan 111a15f820aSRyan Stone static TAILQ_HEAD(, pptdev) pptdev_list = TAILQ_HEAD_INITIALIZER(pptdev_list); 112a15f820aSRyan Stone 113366f6083SPeter Grehan static int 114366f6083SPeter Grehan ppt_probe(device_t dev) 115366f6083SPeter Grehan { 116366f6083SPeter Grehan int bus, slot, func; 117366f6083SPeter Grehan struct pci_devinfo *dinfo; 118366f6083SPeter Grehan 119366f6083SPeter Grehan dinfo = (struct pci_devinfo *)device_get_ivars(dev); 120366f6083SPeter Grehan 121366f6083SPeter Grehan bus = pci_get_bus(dev); 122366f6083SPeter Grehan slot = pci_get_slot(dev); 123366f6083SPeter Grehan func = pci_get_function(dev); 124366f6083SPeter Grehan 125366f6083SPeter Grehan /* 126366f6083SPeter Grehan * To qualify as a pci passthrough device a device must: 127366f6083SPeter Grehan * - be allowed by administrator to be used in this role 128366f6083SPeter Grehan * - be an endpoint device 129366f6083SPeter Grehan */ 130a15f820aSRyan Stone if ((dinfo->cfg.hdrtype & PCIM_HDRTYPE) != PCIM_HDRTYPE_NORMAL) 131a15f820aSRyan Stone return (ENXIO); 132a15f820aSRyan Stone else if (vmm_is_pptdev(bus, slot, func)) 133366f6083SPeter Grehan return (0); 134366f6083SPeter Grehan else 135a15f820aSRyan Stone /* 136a15f820aSRyan Stone * Returning BUS_PROBE_NOWILDCARD here matches devices that the 137a15f820aSRyan Stone * SR-IOV infrastructure specified as "ppt" passthrough devices. 138a15f820aSRyan Stone * All normal devices that did not have "ppt" specified as their 139a15f820aSRyan Stone * driver will not be matched by this. 140a15f820aSRyan Stone */ 141a15f820aSRyan Stone return (BUS_PROBE_NOWILDCARD); 142366f6083SPeter Grehan } 143366f6083SPeter Grehan 144366f6083SPeter Grehan static int 145366f6083SPeter Grehan ppt_attach(device_t dev) 146366f6083SPeter Grehan { 147a15f820aSRyan Stone struct pptdev *ppt; 148366f6083SPeter Grehan 149a15f820aSRyan Stone ppt = device_get_softc(dev); 150366f6083SPeter Grehan 151a15f820aSRyan Stone num_pptdevs++; 152a15f820aSRyan Stone TAILQ_INSERT_TAIL(&pptdev_list, ppt, next); 153a15f820aSRyan Stone ppt->dev = dev; 154366f6083SPeter Grehan 155366f6083SPeter Grehan if (bootverbose) 156366f6083SPeter Grehan device_printf(dev, "attached\n"); 157366f6083SPeter Grehan 158366f6083SPeter Grehan return (0); 159366f6083SPeter Grehan } 160366f6083SPeter Grehan 161366f6083SPeter Grehan static int 162366f6083SPeter Grehan ppt_detach(device_t dev) 163366f6083SPeter Grehan { 164a15f820aSRyan Stone struct pptdev *ppt; 165a15f820aSRyan Stone 166a15f820aSRyan Stone ppt = device_get_softc(dev); 167a15f820aSRyan Stone 168a15f820aSRyan Stone if (ppt->vm != NULL) 169a15f820aSRyan Stone return (EBUSY); 170a15f820aSRyan Stone num_pptdevs--; 171a15f820aSRyan Stone TAILQ_REMOVE(&pptdev_list, ppt, next); 172366f6083SPeter Grehan 173366f6083SPeter Grehan return (0); 174366f6083SPeter Grehan } 175366f6083SPeter Grehan 176366f6083SPeter Grehan static device_method_t ppt_methods[] = { 177366f6083SPeter Grehan /* Device interface */ 178366f6083SPeter Grehan DEVMETHOD(device_probe, ppt_probe), 179366f6083SPeter Grehan DEVMETHOD(device_attach, ppt_attach), 180366f6083SPeter Grehan DEVMETHOD(device_detach, ppt_detach), 181366f6083SPeter Grehan {0, 0} 182366f6083SPeter Grehan }; 183366f6083SPeter Grehan 184366f6083SPeter Grehan static devclass_t ppt_devclass; 185a15f820aSRyan Stone DEFINE_CLASS_0(ppt, ppt_driver, ppt_methods, sizeof(struct pptdev)); 186366f6083SPeter Grehan DRIVER_MODULE(ppt, pci, ppt_driver, ppt_devclass, NULL, NULL); 187366f6083SPeter Grehan 188366f6083SPeter Grehan static struct pptdev * 189366f6083SPeter Grehan ppt_find(int bus, int slot, int func) 190366f6083SPeter Grehan { 191366f6083SPeter Grehan device_t dev; 192a15f820aSRyan Stone struct pptdev *ppt; 193a15f820aSRyan Stone int b, s, f; 194366f6083SPeter Grehan 195a15f820aSRyan Stone TAILQ_FOREACH(ppt, &pptdev_list, next) { 196a15f820aSRyan Stone dev = ppt->dev; 197366f6083SPeter Grehan b = pci_get_bus(dev); 198366f6083SPeter Grehan s = pci_get_slot(dev); 199366f6083SPeter Grehan f = pci_get_function(dev); 200366f6083SPeter Grehan if (bus == b && slot == s && func == f) 201a15f820aSRyan Stone return (ppt); 202366f6083SPeter Grehan } 203366f6083SPeter Grehan return (NULL); 204366f6083SPeter Grehan } 205366f6083SPeter Grehan 206366f6083SPeter Grehan static void 207366f6083SPeter Grehan ppt_unmap_mmio(struct vm *vm, struct pptdev *ppt) 208366f6083SPeter Grehan { 209366f6083SPeter Grehan int i; 210366f6083SPeter Grehan struct vm_memory_segment *seg; 211366f6083SPeter Grehan 212366f6083SPeter Grehan for (i = 0; i < MAX_MMIOSEGS; i++) { 213366f6083SPeter Grehan seg = &ppt->mmio[i]; 214366f6083SPeter Grehan if (seg->len == 0) 215366f6083SPeter Grehan continue; 216366f6083SPeter Grehan (void)vm_unmap_mmio(vm, seg->gpa, seg->len); 217366f6083SPeter Grehan bzero(seg, sizeof(struct vm_memory_segment)); 218366f6083SPeter Grehan } 219366f6083SPeter Grehan } 220366f6083SPeter Grehan 221366f6083SPeter Grehan static void 222366f6083SPeter Grehan ppt_teardown_msi(struct pptdev *ppt) 223366f6083SPeter Grehan { 224366f6083SPeter Grehan int i, rid; 225366f6083SPeter Grehan void *cookie; 226366f6083SPeter Grehan struct resource *res; 227366f6083SPeter Grehan 228366f6083SPeter Grehan if (ppt->msi.num_msgs == 0) 229366f6083SPeter Grehan return; 230366f6083SPeter Grehan 231366f6083SPeter Grehan for (i = 0; i < ppt->msi.num_msgs; i++) { 232366f6083SPeter Grehan rid = ppt->msi.startrid + i; 233366f6083SPeter Grehan res = ppt->msi.res[i]; 234366f6083SPeter Grehan cookie = ppt->msi.cookie[i]; 235366f6083SPeter Grehan 236366f6083SPeter Grehan if (cookie != NULL) 237366f6083SPeter Grehan bus_teardown_intr(ppt->dev, res, cookie); 238366f6083SPeter Grehan 239366f6083SPeter Grehan if (res != NULL) 240366f6083SPeter Grehan bus_release_resource(ppt->dev, SYS_RES_IRQ, rid, res); 241366f6083SPeter Grehan 242366f6083SPeter Grehan ppt->msi.res[i] = NULL; 243366f6083SPeter Grehan ppt->msi.cookie[i] = NULL; 244366f6083SPeter Grehan } 245366f6083SPeter Grehan 246366f6083SPeter Grehan if (ppt->msi.startrid == 1) 247366f6083SPeter Grehan pci_release_msi(ppt->dev); 248366f6083SPeter Grehan 249366f6083SPeter Grehan ppt->msi.num_msgs = 0; 250366f6083SPeter Grehan } 251366f6083SPeter Grehan 252cd942e0fSPeter Grehan static void 253cd942e0fSPeter Grehan ppt_teardown_msix_intr(struct pptdev *ppt, int idx) 254cd942e0fSPeter Grehan { 255cd942e0fSPeter Grehan int rid; 256cd942e0fSPeter Grehan struct resource *res; 257cd942e0fSPeter Grehan void *cookie; 258cd942e0fSPeter Grehan 259cd942e0fSPeter Grehan rid = ppt->msix.startrid + idx; 260cd942e0fSPeter Grehan res = ppt->msix.res[idx]; 261cd942e0fSPeter Grehan cookie = ppt->msix.cookie[idx]; 262cd942e0fSPeter Grehan 263cd942e0fSPeter Grehan if (cookie != NULL) 264cd942e0fSPeter Grehan bus_teardown_intr(ppt->dev, res, cookie); 265cd942e0fSPeter Grehan 266cd942e0fSPeter Grehan if (res != NULL) 267cd942e0fSPeter Grehan bus_release_resource(ppt->dev, SYS_RES_IRQ, rid, res); 268cd942e0fSPeter Grehan 269cd942e0fSPeter Grehan ppt->msix.res[idx] = NULL; 270cd942e0fSPeter Grehan ppt->msix.cookie[idx] = NULL; 271cd942e0fSPeter Grehan } 272cd942e0fSPeter Grehan 273cd942e0fSPeter Grehan static void 274cd942e0fSPeter Grehan ppt_teardown_msix(struct pptdev *ppt) 275cd942e0fSPeter Grehan { 276920bc340SNeel Natu int i; 277cd942e0fSPeter Grehan 278cd942e0fSPeter Grehan if (ppt->msix.num_msgs == 0) 279cd942e0fSPeter Grehan return; 280cd942e0fSPeter Grehan 281cd942e0fSPeter Grehan for (i = 0; i < ppt->msix.num_msgs; i++) 282cd942e0fSPeter Grehan ppt_teardown_msix_intr(ppt, i); 283cd942e0fSPeter Grehan 284cd942e0fSPeter Grehan if (ppt->msix.msix_table_res) { 285cd942e0fSPeter Grehan bus_release_resource(ppt->dev, SYS_RES_MEMORY, 286cd942e0fSPeter Grehan ppt->msix.msix_table_rid, 287cd942e0fSPeter Grehan ppt->msix.msix_table_res); 288cd942e0fSPeter Grehan ppt->msix.msix_table_res = NULL; 289cd942e0fSPeter Grehan ppt->msix.msix_table_rid = 0; 290cd942e0fSPeter Grehan } 291cd942e0fSPeter Grehan 292cd942e0fSPeter Grehan free(ppt->msix.res, M_PPTMSIX); 293cd942e0fSPeter Grehan free(ppt->msix.cookie, M_PPTMSIX); 294cd942e0fSPeter Grehan free(ppt->msix.arg, M_PPTMSIX); 295cd942e0fSPeter Grehan 296920bc340SNeel Natu pci_release_msi(ppt->dev); 297cd942e0fSPeter Grehan 298cd942e0fSPeter Grehan ppt->msix.num_msgs = 0; 299cd942e0fSPeter Grehan } 300cd942e0fSPeter Grehan 301366f6083SPeter Grehan int 30251f45d01SNeel Natu ppt_avail_devices(void) 30351f45d01SNeel Natu { 30451f45d01SNeel Natu 30551f45d01SNeel Natu return (num_pptdevs); 30651f45d01SNeel Natu } 30751f45d01SNeel Natu 30851f45d01SNeel Natu int 30951f45d01SNeel Natu ppt_assigned_devices(struct vm *vm) 310318224bbSNeel Natu { 311a15f820aSRyan Stone struct pptdev *ppt; 312a15f820aSRyan Stone int num; 313318224bbSNeel Natu 314318224bbSNeel Natu num = 0; 315a15f820aSRyan Stone TAILQ_FOREACH(ppt, &pptdev_list, next) { 316a15f820aSRyan Stone if (ppt->vm == vm) 317318224bbSNeel Natu num++; 318318224bbSNeel Natu } 319318224bbSNeel Natu return (num); 320318224bbSNeel Natu } 321318224bbSNeel Natu 322318224bbSNeel Natu boolean_t 323318224bbSNeel Natu ppt_is_mmio(struct vm *vm, vm_paddr_t gpa) 324318224bbSNeel Natu { 325a15f820aSRyan Stone int i; 326318224bbSNeel Natu struct pptdev *ppt; 327318224bbSNeel Natu struct vm_memory_segment *seg; 328318224bbSNeel Natu 329a15f820aSRyan Stone TAILQ_FOREACH(ppt, &pptdev_list, next) { 330318224bbSNeel Natu if (ppt->vm != vm) 331318224bbSNeel Natu continue; 332318224bbSNeel Natu 333318224bbSNeel Natu for (i = 0; i < MAX_MMIOSEGS; i++) { 334318224bbSNeel Natu seg = &ppt->mmio[i]; 335318224bbSNeel Natu if (seg->len == 0) 336318224bbSNeel Natu continue; 337318224bbSNeel Natu if (gpa >= seg->gpa && gpa < seg->gpa + seg->len) 338318224bbSNeel Natu return (TRUE); 339318224bbSNeel Natu } 340318224bbSNeel Natu } 341318224bbSNeel Natu 342318224bbSNeel Natu return (FALSE); 343318224bbSNeel Natu } 344318224bbSNeel Natu 345318224bbSNeel Natu int 346366f6083SPeter Grehan ppt_assign_device(struct vm *vm, int bus, int slot, int func) 347366f6083SPeter Grehan { 348366f6083SPeter Grehan struct pptdev *ppt; 349366f6083SPeter Grehan 350366f6083SPeter Grehan ppt = ppt_find(bus, slot, func); 351366f6083SPeter Grehan if (ppt != NULL) { 352366f6083SPeter Grehan /* 353366f6083SPeter Grehan * If this device is owned by a different VM then we 354366f6083SPeter Grehan * cannot change its owner. 355366f6083SPeter Grehan */ 356366f6083SPeter Grehan if (ppt->vm != NULL && ppt->vm != vm) 357366f6083SPeter Grehan return (EBUSY); 358366f6083SPeter Grehan 359366f6083SPeter Grehan ppt->vm = vm; 360a8667250SRyan Stone iommu_add_device(vm_iommu_domain(vm), pci_get_rid(ppt->dev)); 361366f6083SPeter Grehan return (0); 362366f6083SPeter Grehan } 363366f6083SPeter Grehan return (ENOENT); 364366f6083SPeter Grehan } 365366f6083SPeter Grehan 366366f6083SPeter Grehan int 367366f6083SPeter Grehan ppt_unassign_device(struct vm *vm, int bus, int slot, int func) 368366f6083SPeter Grehan { 369366f6083SPeter Grehan struct pptdev *ppt; 370366f6083SPeter Grehan 371366f6083SPeter Grehan ppt = ppt_find(bus, slot, func); 372366f6083SPeter Grehan if (ppt != NULL) { 373366f6083SPeter Grehan /* 374366f6083SPeter Grehan * If this device is not owned by this 'vm' then bail out. 375366f6083SPeter Grehan */ 376366f6083SPeter Grehan if (ppt->vm != vm) 377366f6083SPeter Grehan return (EBUSY); 378366f6083SPeter Grehan ppt_unmap_mmio(vm, ppt); 379366f6083SPeter Grehan ppt_teardown_msi(ppt); 380cd942e0fSPeter Grehan ppt_teardown_msix(ppt); 381a8667250SRyan Stone iommu_remove_device(vm_iommu_domain(vm), pci_get_rid(ppt->dev)); 382366f6083SPeter Grehan ppt->vm = NULL; 383366f6083SPeter Grehan return (0); 384366f6083SPeter Grehan } 385366f6083SPeter Grehan return (ENOENT); 386366f6083SPeter Grehan } 387366f6083SPeter Grehan 388366f6083SPeter Grehan int 389366f6083SPeter Grehan ppt_unassign_all(struct vm *vm) 390366f6083SPeter Grehan { 391a15f820aSRyan Stone struct pptdev *ppt; 392a15f820aSRyan Stone int bus, slot, func; 393366f6083SPeter Grehan device_t dev; 394366f6083SPeter Grehan 395a15f820aSRyan Stone TAILQ_FOREACH(ppt, &pptdev_list, next) { 396a15f820aSRyan Stone if (ppt->vm == vm) { 397a15f820aSRyan Stone dev = ppt->dev; 398366f6083SPeter Grehan bus = pci_get_bus(dev); 399366f6083SPeter Grehan slot = pci_get_slot(dev); 400366f6083SPeter Grehan func = pci_get_function(dev); 401318224bbSNeel Natu vm_unassign_pptdev(vm, bus, slot, func); 402366f6083SPeter Grehan } 403366f6083SPeter Grehan } 404366f6083SPeter Grehan 405366f6083SPeter Grehan return (0); 406366f6083SPeter Grehan } 407366f6083SPeter Grehan 408366f6083SPeter Grehan int 409366f6083SPeter Grehan ppt_map_mmio(struct vm *vm, int bus, int slot, int func, 410366f6083SPeter Grehan vm_paddr_t gpa, size_t len, vm_paddr_t hpa) 411366f6083SPeter Grehan { 412366f6083SPeter Grehan int i, error; 413366f6083SPeter Grehan struct vm_memory_segment *seg; 414366f6083SPeter Grehan struct pptdev *ppt; 415366f6083SPeter Grehan 416366f6083SPeter Grehan ppt = ppt_find(bus, slot, func); 417366f6083SPeter Grehan if (ppt != NULL) { 418366f6083SPeter Grehan if (ppt->vm != vm) 419366f6083SPeter Grehan return (EBUSY); 420366f6083SPeter Grehan 421366f6083SPeter Grehan for (i = 0; i < MAX_MMIOSEGS; i++) { 422366f6083SPeter Grehan seg = &ppt->mmio[i]; 423366f6083SPeter Grehan if (seg->len == 0) { 424366f6083SPeter Grehan error = vm_map_mmio(vm, gpa, len, hpa); 425366f6083SPeter Grehan if (error == 0) { 426366f6083SPeter Grehan seg->gpa = gpa; 427366f6083SPeter Grehan seg->len = len; 428366f6083SPeter Grehan } 429366f6083SPeter Grehan return (error); 430366f6083SPeter Grehan } 431366f6083SPeter Grehan } 432366f6083SPeter Grehan return (ENOSPC); 433366f6083SPeter Grehan } 434366f6083SPeter Grehan return (ENOENT); 435366f6083SPeter Grehan } 436366f6083SPeter Grehan 437366f6083SPeter Grehan static int 438366f6083SPeter Grehan pptintr(void *arg) 439366f6083SPeter Grehan { 440366f6083SPeter Grehan struct pptdev *ppt; 441366f6083SPeter Grehan struct pptintr_arg *pptarg; 442366f6083SPeter Grehan 443366f6083SPeter Grehan pptarg = arg; 444366f6083SPeter Grehan ppt = pptarg->pptdev; 445366f6083SPeter Grehan 446366f6083SPeter Grehan if (ppt->vm != NULL) 4474f8be175SNeel Natu lapic_intr_msi(ppt->vm, pptarg->addr, pptarg->msg_data); 448366f6083SPeter Grehan else { 449366f6083SPeter Grehan /* 450366f6083SPeter Grehan * XXX 451366f6083SPeter Grehan * This is not expected to happen - panic? 452366f6083SPeter Grehan */ 453366f6083SPeter Grehan } 454366f6083SPeter Grehan 455366f6083SPeter Grehan /* 456366f6083SPeter Grehan * For legacy interrupts give other filters a chance in case 457366f6083SPeter Grehan * the interrupt was not generated by the passthrough device. 458366f6083SPeter Grehan */ 459366f6083SPeter Grehan if (ppt->msi.startrid == 0) 460366f6083SPeter Grehan return (FILTER_STRAY); 461366f6083SPeter Grehan else 462366f6083SPeter Grehan return (FILTER_HANDLED); 463366f6083SPeter Grehan } 464366f6083SPeter Grehan 465366f6083SPeter Grehan int 466366f6083SPeter Grehan ppt_setup_msi(struct vm *vm, int vcpu, int bus, int slot, int func, 4674f8be175SNeel Natu uint64_t addr, uint64_t msg, int numvec) 468366f6083SPeter Grehan { 469366f6083SPeter Grehan int i, rid, flags; 470366f6083SPeter Grehan int msi_count, startrid, error, tmp; 471366f6083SPeter Grehan struct pptdev *ppt; 472366f6083SPeter Grehan 4734f8be175SNeel Natu if (numvec < 0 || numvec > MAX_MSIMSGS) 474366f6083SPeter Grehan return (EINVAL); 475366f6083SPeter Grehan 476366f6083SPeter Grehan ppt = ppt_find(bus, slot, func); 477366f6083SPeter Grehan if (ppt == NULL) 478366f6083SPeter Grehan return (ENOENT); 479366f6083SPeter Grehan if (ppt->vm != vm) /* Make sure we own this device */ 480366f6083SPeter Grehan return (EBUSY); 481366f6083SPeter Grehan 482366f6083SPeter Grehan /* Free any allocated resources */ 483485b3300SNeel Natu ppt_teardown_msi(ppt); 484366f6083SPeter Grehan 485366f6083SPeter Grehan if (numvec == 0) /* nothing more to do */ 486366f6083SPeter Grehan return (0); 487366f6083SPeter Grehan 488366f6083SPeter Grehan flags = RF_ACTIVE; 489366f6083SPeter Grehan msi_count = pci_msi_count(ppt->dev); 490366f6083SPeter Grehan if (msi_count == 0) { 491366f6083SPeter Grehan startrid = 0; /* legacy interrupt */ 492366f6083SPeter Grehan msi_count = 1; 493366f6083SPeter Grehan flags |= RF_SHAREABLE; 494366f6083SPeter Grehan } else 495366f6083SPeter Grehan startrid = 1; /* MSI */ 496366f6083SPeter Grehan 497366f6083SPeter Grehan /* 498366f6083SPeter Grehan * The device must be capable of supporting the number of vectors 499366f6083SPeter Grehan * the guest wants to allocate. 500366f6083SPeter Grehan */ 501366f6083SPeter Grehan if (numvec > msi_count) 502366f6083SPeter Grehan return (EINVAL); 503366f6083SPeter Grehan 504366f6083SPeter Grehan /* 505366f6083SPeter Grehan * Make sure that we can allocate all the MSI vectors that are needed 506366f6083SPeter Grehan * by the guest. 507366f6083SPeter Grehan */ 508366f6083SPeter Grehan if (startrid == 1) { 509366f6083SPeter Grehan tmp = numvec; 510366f6083SPeter Grehan error = pci_alloc_msi(ppt->dev, &tmp); 511366f6083SPeter Grehan if (error) 512366f6083SPeter Grehan return (error); 513366f6083SPeter Grehan else if (tmp != numvec) { 514366f6083SPeter Grehan pci_release_msi(ppt->dev); 515366f6083SPeter Grehan return (ENOSPC); 516366f6083SPeter Grehan } else { 517366f6083SPeter Grehan /* success */ 518366f6083SPeter Grehan } 519366f6083SPeter Grehan } 520366f6083SPeter Grehan 521366f6083SPeter Grehan ppt->msi.startrid = startrid; 522366f6083SPeter Grehan 523366f6083SPeter Grehan /* 524366f6083SPeter Grehan * Allocate the irq resource and attach it to the interrupt handler. 525366f6083SPeter Grehan */ 526366f6083SPeter Grehan for (i = 0; i < numvec; i++) { 527366f6083SPeter Grehan ppt->msi.num_msgs = i + 1; 528366f6083SPeter Grehan ppt->msi.cookie[i] = NULL; 529366f6083SPeter Grehan 530366f6083SPeter Grehan rid = startrid + i; 531366f6083SPeter Grehan ppt->msi.res[i] = bus_alloc_resource_any(ppt->dev, SYS_RES_IRQ, 532366f6083SPeter Grehan &rid, flags); 533366f6083SPeter Grehan if (ppt->msi.res[i] == NULL) 534366f6083SPeter Grehan break; 535366f6083SPeter Grehan 536366f6083SPeter Grehan ppt->msi.arg[i].pptdev = ppt; 5374f8be175SNeel Natu ppt->msi.arg[i].addr = addr; 5384f8be175SNeel Natu ppt->msi.arg[i].msg_data = msg + i; 539366f6083SPeter Grehan 540366f6083SPeter Grehan error = bus_setup_intr(ppt->dev, ppt->msi.res[i], 54134a6b2d6SJohn Baldwin INTR_TYPE_NET | INTR_MPSAFE, 542366f6083SPeter Grehan pptintr, NULL, &ppt->msi.arg[i], 543366f6083SPeter Grehan &ppt->msi.cookie[i]); 544366f6083SPeter Grehan if (error != 0) 545366f6083SPeter Grehan break; 546366f6083SPeter Grehan } 547366f6083SPeter Grehan 548366f6083SPeter Grehan if (i < numvec) { 549485b3300SNeel Natu ppt_teardown_msi(ppt); 550366f6083SPeter Grehan return (ENXIO); 551366f6083SPeter Grehan } 552366f6083SPeter Grehan 553366f6083SPeter Grehan return (0); 554366f6083SPeter Grehan } 555cd942e0fSPeter Grehan 556cd942e0fSPeter Grehan int 557cd942e0fSPeter Grehan ppt_setup_msix(struct vm *vm, int vcpu, int bus, int slot, int func, 5584f8be175SNeel Natu int idx, uint64_t addr, uint64_t msg, uint32_t vector_control) 559cd942e0fSPeter Grehan { 560cd942e0fSPeter Grehan struct pptdev *ppt; 561cd942e0fSPeter Grehan struct pci_devinfo *dinfo; 562920bc340SNeel Natu int numvec, alloced, rid, error; 563cd942e0fSPeter Grehan size_t res_size, cookie_size, arg_size; 564cd942e0fSPeter Grehan 565cd942e0fSPeter Grehan ppt = ppt_find(bus, slot, func); 566cd942e0fSPeter Grehan if (ppt == NULL) 567cd942e0fSPeter Grehan return (ENOENT); 568cd942e0fSPeter Grehan if (ppt->vm != vm) /* Make sure we own this device */ 569cd942e0fSPeter Grehan return (EBUSY); 570cd942e0fSPeter Grehan 571cd942e0fSPeter Grehan dinfo = device_get_ivars(ppt->dev); 572cd942e0fSPeter Grehan if (!dinfo) 573cd942e0fSPeter Grehan return (ENXIO); 574cd942e0fSPeter Grehan 575cd942e0fSPeter Grehan /* 576cd942e0fSPeter Grehan * First-time configuration: 577cd942e0fSPeter Grehan * Allocate the MSI-X table 578cd942e0fSPeter Grehan * Allocate the IRQ resources 579cd942e0fSPeter Grehan * Set up some variables in ppt->msix 580cd942e0fSPeter Grehan */ 581920bc340SNeel Natu if (ppt->msix.num_msgs == 0) { 582920bc340SNeel Natu numvec = pci_msix_count(ppt->dev); 583920bc340SNeel Natu if (numvec <= 0) 584920bc340SNeel Natu return (EINVAL); 585cd942e0fSPeter Grehan 586cd942e0fSPeter Grehan ppt->msix.startrid = 1; 587920bc340SNeel Natu ppt->msix.num_msgs = numvec; 588cd942e0fSPeter Grehan 589cd942e0fSPeter Grehan res_size = numvec * sizeof(ppt->msix.res[0]); 590cd942e0fSPeter Grehan cookie_size = numvec * sizeof(ppt->msix.cookie[0]); 591cd942e0fSPeter Grehan arg_size = numvec * sizeof(ppt->msix.arg[0]); 592cd942e0fSPeter Grehan 593920bc340SNeel Natu ppt->msix.res = malloc(res_size, M_PPTMSIX, M_WAITOK | M_ZERO); 594920bc340SNeel Natu ppt->msix.cookie = malloc(cookie_size, M_PPTMSIX, 595920bc340SNeel Natu M_WAITOK | M_ZERO); 596920bc340SNeel Natu ppt->msix.arg = malloc(arg_size, M_PPTMSIX, M_WAITOK | M_ZERO); 597920bc340SNeel Natu 598920bc340SNeel Natu rid = dinfo->cfg.msix.msix_table_bar; 599920bc340SNeel Natu ppt->msix.msix_table_res = bus_alloc_resource_any(ppt->dev, 600920bc340SNeel Natu SYS_RES_MEMORY, &rid, RF_ACTIVE); 601920bc340SNeel Natu 602920bc340SNeel Natu if (ppt->msix.msix_table_res == NULL) { 603cd942e0fSPeter Grehan ppt_teardown_msix(ppt); 604cd942e0fSPeter Grehan return (ENOSPC); 605cd942e0fSPeter Grehan } 606920bc340SNeel Natu ppt->msix.msix_table_rid = rid; 607920bc340SNeel Natu 608920bc340SNeel Natu alloced = numvec; 609920bc340SNeel Natu error = pci_alloc_msix(ppt->dev, &alloced); 610920bc340SNeel Natu if (error || alloced != numvec) { 611920bc340SNeel Natu ppt_teardown_msix(ppt); 612920bc340SNeel Natu return (error == 0 ? ENOSPC: error); 613920bc340SNeel Natu } 614cd942e0fSPeter Grehan } 615cd942e0fSPeter Grehan 616cd942e0fSPeter Grehan if ((vector_control & PCIM_MSIX_VCTRL_MASK) == 0) { 617cd942e0fSPeter Grehan /* Tear down the IRQ if it's already set up */ 618cd942e0fSPeter Grehan ppt_teardown_msix_intr(ppt, idx); 619cd942e0fSPeter Grehan 620cd942e0fSPeter Grehan /* Allocate the IRQ resource */ 621cd942e0fSPeter Grehan ppt->msix.cookie[idx] = NULL; 622cd942e0fSPeter Grehan rid = ppt->msix.startrid + idx; 623cd942e0fSPeter Grehan ppt->msix.res[idx] = bus_alloc_resource_any(ppt->dev, SYS_RES_IRQ, 624cd942e0fSPeter Grehan &rid, RF_ACTIVE); 625cd942e0fSPeter Grehan if (ppt->msix.res[idx] == NULL) 626cd942e0fSPeter Grehan return (ENXIO); 627cd942e0fSPeter Grehan 628cd942e0fSPeter Grehan ppt->msix.arg[idx].pptdev = ppt; 6294f8be175SNeel Natu ppt->msix.arg[idx].addr = addr; 6304f8be175SNeel Natu ppt->msix.arg[idx].msg_data = msg; 631cd942e0fSPeter Grehan 632cd942e0fSPeter Grehan /* Setup the MSI-X interrupt */ 633cd942e0fSPeter Grehan error = bus_setup_intr(ppt->dev, ppt->msix.res[idx], 634cd942e0fSPeter Grehan INTR_TYPE_NET | INTR_MPSAFE, 635cd942e0fSPeter Grehan pptintr, NULL, &ppt->msix.arg[idx], 636cd942e0fSPeter Grehan &ppt->msix.cookie[idx]); 637cd942e0fSPeter Grehan 638cd942e0fSPeter Grehan if (error != 0) { 639cd942e0fSPeter Grehan bus_teardown_intr(ppt->dev, ppt->msix.res[idx], ppt->msix.cookie[idx]); 640cd942e0fSPeter Grehan bus_release_resource(ppt->dev, SYS_RES_IRQ, rid, ppt->msix.res[idx]); 641cd942e0fSPeter Grehan ppt->msix.cookie[idx] = NULL; 642cd942e0fSPeter Grehan ppt->msix.res[idx] = NULL; 643cd942e0fSPeter Grehan return (ENXIO); 644cd942e0fSPeter Grehan } 645cd942e0fSPeter Grehan } else { 646cd942e0fSPeter Grehan /* Masked, tear it down if it's already been set up */ 647cd942e0fSPeter Grehan ppt_teardown_msix_intr(ppt, idx); 648cd942e0fSPeter Grehan } 649cd942e0fSPeter Grehan 650cd942e0fSPeter Grehan return (0); 651cd942e0fSPeter Grehan } 652