nouveau_pci.c revision 1.34
1 /* $NetBSD: nouveau_pci.c,v 1.34 2021/12/19 12:28:12 riastradh Exp $ */ 2 3 /*- 4 * Copyright (c) 2015 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Taylor R. Campbell. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: nouveau_pci.c,v 1.34 2021/12/19 12:28:12 riastradh Exp $"); 34 35 #ifdef _KERNEL_OPT 36 #if defined(__arm__) || defined(__aarch64__) 37 #include "opt_fdt.h" 38 #endif 39 #endif 40 41 #include <sys/types.h> 42 #include <sys/atomic.h> 43 #include <sys/device.h> 44 #include <sys/queue.h> 45 #include <sys/workqueue.h> 46 #include <sys/module.h> 47 48 #ifdef FDT 49 #include <dev/fdt/fdtvar.h> 50 #endif 51 52 #include <drm/drm_pci.h> 53 54 #include <core/device.h> 55 #include <core/pci.h> 56 57 #include "nouveau_drv.h" 58 #include "nouveau_pci.h" 59 60 struct drm_device; 61 62 MODULE(MODULE_CLASS_DRIVER, nouveau_pci, "nouveau,drmkms_pci"); 63 64 SIMPLEQ_HEAD(nouveau_pci_task_head, nouveau_pci_task); 65 66 struct nouveau_pci_softc { 67 device_t sc_dev; 68 struct pci_attach_args sc_pa; 69 struct lwp *sc_task_thread; 70 struct nouveau_pci_task_head sc_tasks; 71 struct workqueue *sc_task_wq; 72 struct drm_device *sc_drm_dev; 73 struct pci_dev sc_pci_dev; 74 struct nvkm_device *sc_nv_dev; 75 bool sc_pci_attached; 76 bool sc_nvdev_inited; 77 bool sc_dev_registered; 78 }; 79 80 static int nouveau_pci_match(device_t, cfdata_t, void *); 81 static void nouveau_pci_attach(device_t, device_t, void *); 82 static void nouveau_pci_attach_real(device_t); 83 static int nouveau_pci_detach(device_t, int); 84 85 static bool nouveau_pci_suspend(device_t, const pmf_qual_t *); 86 static bool nouveau_pci_resume(device_t, const pmf_qual_t *); 87 88 static void nouveau_pci_task_work(struct work *, void *); 89 90 CFATTACH_DECL_NEW(nouveau_pci, sizeof(struct nouveau_pci_softc), 91 nouveau_pci_match, nouveau_pci_attach, nouveau_pci_detach, NULL); 92 93 /* Kludge to get this from nouveau_drm.c. */ 94 extern struct drm_driver *const nouveau_drm_driver_pci; 95 96 static int 97 nouveau_pci_match(device_t parent, cfdata_t match, void *aux) 98 { 99 const struct pci_attach_args *const pa = aux; 100 struct pci_dev pdev; 101 struct nvkm_device *device; 102 int ret; 103 104 if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_NVIDIA && 105 PCI_VENDOR(pa->pa_id) != PCI_VENDOR_NVIDIA_SGS) 106 return 0; 107 108 if (PCI_CLASS(pa->pa_class) != PCI_CLASS_DISPLAY) 109 return 0; 110 111 /* 112 * NetBSD drm2 doesn't support Pascal, Volta or Turing based cards: 113 * 0x1580-0x15ff GP100 114 * 0x1b00-0x1b7f GP102 115 * 0x1b80-0x1bff GP104 116 * 0x1c00-0x1c7f GP106 117 * 0x1c80-0x1cff GP107 118 * 0x1d00-0x1d7f GP108 119 * 0x1d80-0x1dff GV100 120 * 0x1e00-0x1e7f TU102 121 * 0x1e80-0x1eff TU104 122 * 0x1f00-0x1f7f TU106 123 * 0x1f80-0x1fff TU117 124 * 0x2180-0x21ff TU116 125 * 126 * reduce this to >= 1580, so that new chipsets not explictly 127 * listed above will be picked up. 128 * 129 * XXX perhaps switch this to explicitly match known list. 130 */ 131 if (PCI_PRODUCT(pa->pa_id) >= 0x1580) 132 return 0; 133 134 linux_pci_dev_init(&pdev, parent /* XXX bogus */, parent, pa, 0); 135 ret = nvkm_device_pci_new(&pdev, NULL, "error", 136 /* detect */ true, /* mmio */ false, /* subdev_mask */ 0, &device); 137 if (ret == 0) /* don't want to hang onto it */ 138 nvkm_device_del(&device); 139 linux_pci_dev_destroy(&pdev); 140 if (ret) /* failure */ 141 return 0; 142 143 return 6; /* XXX Beat genfb_pci... */ 144 } 145 146 extern char *nouveau_config; 147 extern char *nouveau_debug; 148 149 static void 150 nouveau_pci_attach(device_t parent, device_t self, void *aux) 151 { 152 struct nouveau_pci_softc *const sc = device_private(self); 153 const struct pci_attach_args *const pa = aux; 154 int error; 155 156 pci_aprint_devinfo(pa, NULL); 157 158 /* Initialize the Linux PCI device descriptor. */ 159 linux_pci_dev_init(&sc->sc_pci_dev, self, device_parent(self), pa, 0); 160 161 sc->sc_dev = self; 162 sc->sc_pa = *pa; 163 sc->sc_task_thread = NULL; 164 SIMPLEQ_INIT(&sc->sc_tasks); 165 error = workqueue_create(&sc->sc_task_wq, "nouveau_pci", 166 &nouveau_pci_task_work, NULL, PRI_NONE, IPL_NONE, WQ_MPSAFE); 167 if (error) { 168 aprint_error_dev(self, "unable to create workqueue: %d\n", 169 error); 170 sc->sc_task_wq = NULL; 171 return; 172 } 173 174 #ifdef FDT 175 /* 176 * XXX Remove the simple framebuffer, assuming that this device 177 * will take over. 178 */ 179 const char *fb_compatible[] = { "simple-framebuffer", NULL }; 180 fdt_remove_bycompat(fb_compatible); 181 #endif 182 183 /* 184 * Defer the remainder of initialization until we have mounted 185 * the root file system and can load firmware images. 186 */ 187 config_mountroot(self, &nouveau_pci_attach_real); 188 } 189 190 static void 191 nouveau_pci_attach_real(device_t self) 192 { 193 struct nouveau_pci_softc *const sc = device_private(self); 194 int error; 195 196 /* 197 * Cause any tasks issued synchronously during attach to be 198 * processed at the end of this function. 199 */ 200 sc->sc_task_thread = curlwp; 201 202 /* XXX errno Linux->NetBSD */ 203 error = -nvkm_device_pci_new(&sc->sc_pci_dev, 204 nouveau_config, nouveau_debug, 205 /* detect */ true, /* mmio */ true, /* subdev_mask */ ~0ULL, 206 &sc->sc_nv_dev); 207 if (error) { 208 aprint_error_dev(self, "unable to create nouveau device: %d\n", 209 error); 210 sc->sc_nv_dev = NULL; 211 goto out; 212 } 213 214 sc->sc_drm_dev = drm_dev_alloc(nouveau_drm_driver_pci, self); 215 if (IS_ERR(sc->sc_drm_dev)) { 216 aprint_error_dev(self, "unable to create drm device: %ld\n", 217 PTR_ERR(sc->sc_drm_dev)); 218 sc->sc_drm_dev = NULL; 219 goto out; 220 } 221 222 /* XXX errno Linux->NetBSD */ 223 error = -drm_pci_attach(sc->sc_drm_dev, &sc->sc_pci_dev); 224 if (error) { 225 aprint_error_dev(self, "unable to attach drm: %d\n", error); 226 goto out; 227 } 228 sc->sc_pci_attached = true; 229 230 /* XXX errno Linux->NetBSD */ 231 error = -nouveau_drm_device_init(sc->sc_drm_dev); 232 if (error) { 233 aprint_error_dev(self, "unable to init nouveau: %d\n", error); 234 goto out; 235 } 236 sc->sc_nvdev_inited = true; 237 238 /* XXX errno Linux->NetBSD */ 239 error = -drm_dev_register(sc->sc_drm_dev, 0); 240 if (error) { 241 aprint_error_dev(self, "unable to register drm: %d\n", error); 242 goto out; 243 } 244 sc->sc_dev_registered = true; 245 246 if (!pmf_device_register(self, &nouveau_pci_suspend, 247 &nouveau_pci_resume)) 248 aprint_error_dev(self, "unable to establish power handler\n"); 249 250 while (!SIMPLEQ_EMPTY(&sc->sc_tasks)) { 251 struct nouveau_pci_task *const task = 252 SIMPLEQ_FIRST(&sc->sc_tasks); 253 254 SIMPLEQ_REMOVE_HEAD(&sc->sc_tasks, nt_u.queue); 255 (*task->nt_fn)(task); 256 } 257 258 out: /* Cause any subesquent tasks to be processed by the workqueue. */ 259 atomic_store_relaxed(&sc->sc_task_thread, NULL); 260 } 261 262 static int 263 nouveau_pci_detach(device_t self, int flags) 264 { 265 struct nouveau_pci_softc *const sc = device_private(self); 266 int error; 267 268 /* XXX Check for in-use before tearing it all down... */ 269 error = config_detach_children(self, flags); 270 if (error) 271 return error; 272 273 pmf_device_deregister(self); 274 if (sc->sc_dev_registered) 275 drm_dev_unregister(sc->sc_drm_dev); 276 if (sc->sc_nvdev_inited) 277 nouveau_drm_device_fini(sc->sc_drm_dev); 278 if (sc->sc_pci_attached) 279 drm_pci_detach(sc->sc_drm_dev); 280 if (sc->sc_drm_dev) { 281 drm_dev_put(sc->sc_drm_dev); 282 sc->sc_drm_dev = NULL; 283 } 284 if (sc->sc_nv_dev) 285 nvkm_device_del(&sc->sc_nv_dev); 286 if (sc->sc_task_wq) { 287 workqueue_destroy(sc->sc_task_wq); 288 sc->sc_task_wq = NULL; 289 } 290 linux_pci_dev_destroy(&sc->sc_pci_dev); 291 292 return 0; 293 } 294 295 /* 296 * XXX Synchronize with nouveau_do_suspend in nouveau_drm.c. 297 */ 298 static bool 299 nouveau_pci_suspend(device_t self, const pmf_qual_t *qual __unused) 300 { 301 struct nouveau_pci_softc *const sc = device_private(self); 302 303 return nouveau_pmops_suspend(sc->sc_drm_dev) == 0; 304 } 305 306 static bool 307 nouveau_pci_resume(device_t self, const pmf_qual_t *qual) 308 { 309 struct nouveau_pci_softc *const sc = device_private(self); 310 311 return nouveau_pmops_resume(sc->sc_drm_dev) == 0; 312 } 313 314 static void 315 nouveau_pci_task_work(struct work *work, void *cookie __unused) 316 { 317 struct nouveau_pci_task *const task = container_of(work, 318 struct nouveau_pci_task, nt_u.work); 319 320 (*task->nt_fn)(task); 321 } 322 323 int 324 nouveau_pci_task_schedule(device_t self, struct nouveau_pci_task *task) 325 { 326 struct nouveau_pci_softc *const sc = device_private(self); 327 328 if (atomic_load_relaxed(&sc->sc_task_thread) == curlwp) 329 SIMPLEQ_INSERT_TAIL(&sc->sc_tasks, task, nt_u.queue); 330 else 331 workqueue_enqueue(sc->sc_task_wq, &task->nt_u.work, NULL); 332 333 return 0; 334 } 335 336 extern struct drm_driver *const nouveau_drm_driver_stub; /* XXX */ 337 extern struct drm_driver *const nouveau_drm_driver_pci; /* XXX */ 338 339 static int 340 nouveau_pci_modcmd(modcmd_t cmd, void *arg __unused) 341 { 342 343 switch (cmd) { 344 case MODULE_CMD_INIT: 345 *nouveau_drm_driver_pci = *nouveau_drm_driver_stub; 346 nouveau_drm_driver_pci->request_irq = drm_pci_request_irq; 347 nouveau_drm_driver_pci->free_irq = drm_pci_free_irq; 348 #if 0 /* XXX nouveau acpi */ 349 nouveau_register_dsm_handler(); 350 #endif 351 break; 352 case MODULE_CMD_FINI: 353 #if 0 /* XXX nouveau acpi */ 354 nouveau_unregister_dsm_handler(); 355 #endif 356 break; 357 default: 358 return ENOTTY; 359 } 360 361 return 0; 362 } 363
Indexes created Tue Sep 30 17:09:57 GMT 2025