nouveau_pci.c revision 1.35
1 /* $NetBSD: nouveau_pci.c,v 1.35 2021/12/19 12:45:35 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 1.35 2021/12/19 12:45:35 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 drm2/5.6 doesn't support Ampere (GTX 30 series) based cards: 113 * 0x2080-0x20ff GA100 114 * 0x2200-0x227f GA102 115 * 0x2300-0x237f GA103 116 * 0x2480-0x24ff GA104 117 * 0x2500-0x257f GA106 118 * 0x2580-0x25ff GA107 119 * 120 * TU116 (GTX 16xx) occupies the space from 0x2180-0x21ff. 121 */ 122 if (PCI_PRODUCT(pa->pa_id) >= 0x1fff && PCI_PRODUCT(pa->pa_id) < 0x2180) 123 return 0; 124 if (PCI_PRODUCT(pa->pa_id) >= 0x21ff) 125 return 0; 126 127 linux_pci_dev_init(&pdev, parent /* XXX bogus */, parent, pa, 0); 128 ret = nvkm_device_pci_new(&pdev, NULL, "error", 129 /* detect */ true, /* mmio */ false, /* subdev_mask */ 0, &device); 130 if (ret == 0) /* don't want to hang onto it */ 131 nvkm_device_del(&device); 132 linux_pci_dev_destroy(&pdev); 133 if (ret) /* failure */ 134 return 0; 135 136 return 6; /* XXX Beat genfb_pci... */ 137 } 138 139 extern char *nouveau_config; 140 extern char *nouveau_debug; 141 142 static void 143 nouveau_pci_attach(device_t parent, device_t self, void *aux) 144 { 145 struct nouveau_pci_softc *const sc = device_private(self); 146 const struct pci_attach_args *const pa = aux; 147 int error; 148 149 pci_aprint_devinfo(pa, NULL); 150 151 /* Initialize the Linux PCI device descriptor. */ 152 linux_pci_dev_init(&sc->sc_pci_dev, self, device_parent(self), pa, 0); 153 154 sc->sc_dev = self; 155 sc->sc_pa = *pa; 156 sc->sc_task_thread = NULL; 157 SIMPLEQ_INIT(&sc->sc_tasks); 158 error = workqueue_create(&sc->sc_task_wq, "nouveau_pci", 159 &nouveau_pci_task_work, NULL, PRI_NONE, IPL_NONE, WQ_MPSAFE); 160 if (error) { 161 aprint_error_dev(self, "unable to create workqueue: %d\n", 162 error); 163 sc->sc_task_wq = NULL; 164 return; 165 } 166 167 #ifdef FDT 168 /* 169 * XXX Remove the simple framebuffer, assuming that this device 170 * will take over. 171 */ 172 const char *fb_compatible[] = { "simple-framebuffer", NULL }; 173 fdt_remove_bycompat(fb_compatible); 174 #endif 175 176 /* 177 * Defer the remainder of initialization until we have mounted 178 * the root file system and can load firmware images. 179 */ 180 config_mountroot(self, &nouveau_pci_attach_real); 181 } 182 183 static void 184 nouveau_pci_attach_real(device_t self) 185 { 186 struct nouveau_pci_softc *const sc = device_private(self); 187 int error; 188 189 /* 190 * Cause any tasks issued synchronously during attach to be 191 * processed at the end of this function. 192 */ 193 sc->sc_task_thread = curlwp; 194 195 /* XXX errno Linux->NetBSD */ 196 error = -nvkm_device_pci_new(&sc->sc_pci_dev, 197 nouveau_config, nouveau_debug, 198 /* detect */ true, /* mmio */ true, /* subdev_mask */ ~0ULL, 199 &sc->sc_nv_dev); 200 if (error) { 201 aprint_error_dev(self, "unable to create nouveau device: %d\n", 202 error); 203 sc->sc_nv_dev = NULL; 204 goto out; 205 } 206 207 sc->sc_drm_dev = drm_dev_alloc(nouveau_drm_driver_pci, self); 208 if (IS_ERR(sc->sc_drm_dev)) { 209 aprint_error_dev(self, "unable to create drm device: %ld\n", 210 PTR_ERR(sc->sc_drm_dev)); 211 sc->sc_drm_dev = NULL; 212 goto out; 213 } 214 215 /* XXX errno Linux->NetBSD */ 216 error = -drm_pci_attach(sc->sc_drm_dev, &sc->sc_pci_dev); 217 if (error) { 218 aprint_error_dev(self, "unable to attach drm: %d\n", error); 219 goto out; 220 } 221 sc->sc_pci_attached = true; 222 223 /* XXX errno Linux->NetBSD */ 224 error = -nouveau_drm_device_init(sc->sc_drm_dev); 225 if (error) { 226 aprint_error_dev(self, "unable to init nouveau: %d\n", error); 227 goto out; 228 } 229 sc->sc_nvdev_inited = true; 230 231 /* XXX errno Linux->NetBSD */ 232 error = -drm_dev_register(sc->sc_drm_dev, 0); 233 if (error) { 234 aprint_error_dev(self, "unable to register drm: %d\n", error); 235 goto out; 236 } 237 sc->sc_dev_registered = true; 238 239 if (!pmf_device_register(self, &nouveau_pci_suspend, 240 &nouveau_pci_resume)) 241 aprint_error_dev(self, "unable to establish power handler\n"); 242 243 while (!SIMPLEQ_EMPTY(&sc->sc_tasks)) { 244 struct nouveau_pci_task *const task = 245 SIMPLEQ_FIRST(&sc->sc_tasks); 246 247 SIMPLEQ_REMOVE_HEAD(&sc->sc_tasks, nt_u.queue); 248 (*task->nt_fn)(task); 249 } 250 251 out: /* Cause any subesquent tasks to be processed by the workqueue. */ 252 atomic_store_relaxed(&sc->sc_task_thread, NULL); 253 } 254 255 static int 256 nouveau_pci_detach(device_t self, int flags) 257 { 258 struct nouveau_pci_softc *const sc = device_private(self); 259 int error; 260 261 /* XXX Check for in-use before tearing it all down... */ 262 error = config_detach_children(self, flags); 263 if (error) 264 return error; 265 266 pmf_device_deregister(self); 267 if (sc->sc_dev_registered) 268 drm_dev_unregister(sc->sc_drm_dev); 269 if (sc->sc_nvdev_inited) 270 nouveau_drm_device_fini(sc->sc_drm_dev); 271 if (sc->sc_pci_attached) 272 drm_pci_detach(sc->sc_drm_dev); 273 if (sc->sc_drm_dev) { 274 drm_dev_put(sc->sc_drm_dev); 275 sc->sc_drm_dev = NULL; 276 } 277 if (sc->sc_nv_dev) 278 nvkm_device_del(&sc->sc_nv_dev); 279 if (sc->sc_task_wq) { 280 workqueue_destroy(sc->sc_task_wq); 281 sc->sc_task_wq = NULL; 282 } 283 linux_pci_dev_destroy(&sc->sc_pci_dev); 284 285 return 0; 286 } 287 288 /* 289 * XXX Synchronize with nouveau_do_suspend in nouveau_drm.c. 290 */ 291 static bool 292 nouveau_pci_suspend(device_t self, const pmf_qual_t *qual __unused) 293 { 294 struct nouveau_pci_softc *const sc = device_private(self); 295 296 return nouveau_pmops_suspend(sc->sc_drm_dev) == 0; 297 } 298 299 static bool 300 nouveau_pci_resume(device_t self, const pmf_qual_t *qual) 301 { 302 struct nouveau_pci_softc *const sc = device_private(self); 303 304 return nouveau_pmops_resume(sc->sc_drm_dev) == 0; 305 } 306 307 static void 308 nouveau_pci_task_work(struct work *work, void *cookie __unused) 309 { 310 struct nouveau_pci_task *const task = container_of(work, 311 struct nouveau_pci_task, nt_u.work); 312 313 (*task->nt_fn)(task); 314 } 315 316 int 317 nouveau_pci_task_schedule(device_t self, struct nouveau_pci_task *task) 318 { 319 struct nouveau_pci_softc *const sc = device_private(self); 320 321 if (atomic_load_relaxed(&sc->sc_task_thread) == curlwp) 322 SIMPLEQ_INSERT_TAIL(&sc->sc_tasks, task, nt_u.queue); 323 else 324 workqueue_enqueue(sc->sc_task_wq, &task->nt_u.work, NULL); 325 326 return 0; 327 } 328 329 extern struct drm_driver *const nouveau_drm_driver_stub; /* XXX */ 330 extern struct drm_driver *const nouveau_drm_driver_pci; /* XXX */ 331 332 static int 333 nouveau_pci_modcmd(modcmd_t cmd, void *arg __unused) 334 { 335 336 switch (cmd) { 337 case MODULE_CMD_INIT: 338 *nouveau_drm_driver_pci = *nouveau_drm_driver_stub; 339 nouveau_drm_driver_pci->request_irq = drm_pci_request_irq; 340 nouveau_drm_driver_pci->free_irq = drm_pci_free_irq; 341 #if 0 /* XXX nouveau acpi */ 342 nouveau_register_dsm_handler(); 343 #endif 344 break; 345 case MODULE_CMD_FINI: 346 #if 0 /* XXX nouveau acpi */ 347 nouveau_unregister_dsm_handler(); 348 #endif 349 break; 350 default: 351 return ENOTTY; 352 } 353 354 return 0; 355 } 356
Indexes created Tue Sep 30 11:09:46 GMT 2025