nouveau_pci.c revision 1.29
1 /* $NetBSD: nouveau_pci.c,v 1.29 2021/12/19 10:51:59 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 1.29 2021/12/19 10:51:59 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/device.h> 43 #include <sys/queue.h> 44 #include <sys/workqueue.h> 45 #include <sys/module.h> 46 47 #ifdef FDT 48 #include <dev/fdt/fdtvar.h> 49 #endif 50 51 #include <drm/drm_pci.h> 52 53 #include <core/device.h> 54 #include <core/pci.h> 55 56 #include "nouveau_drv.h" 57 #include "nouveau_pci.h" 58 59 struct drm_device; 60 61 MODULE(MODULE_CLASS_DRIVER, nouveau_pci, "nouveau,drmkms_pci"); 62 63 SIMPLEQ_HEAD(nouveau_pci_task_head, nouveau_pci_task); 64 65 struct nouveau_pci_softc { 66 device_t sc_dev; 67 struct pci_attach_args sc_pa; 68 enum { 69 NOUVEAU_TASK_ATTACH, 70 NOUVEAU_TASK_WORKQUEUE, 71 } sc_task_state; 72 union { 73 struct workqueue *workqueue; 74 struct nouveau_pci_task_head attach; 75 } sc_task_u; 76 struct drm_device *sc_drm_dev; 77 struct pci_dev sc_pci_dev; 78 struct nvkm_device *sc_nv_dev; 79 }; 80 81 static int nouveau_pci_match(device_t, cfdata_t, void *); 82 static void nouveau_pci_attach(device_t, device_t, void *); 83 static void nouveau_pci_attach_real(device_t); 84 static int nouveau_pci_detach(device_t, int); 85 86 static bool nouveau_pci_suspend(device_t, const pmf_qual_t *); 87 static bool nouveau_pci_resume(device_t, const pmf_qual_t *); 88 89 static void nouveau_pci_task_work(struct work *, void *); 90 91 CFATTACH_DECL_NEW(nouveau_pci, sizeof(struct nouveau_pci_softc), 92 nouveau_pci_match, nouveau_pci_attach, nouveau_pci_detach, NULL); 93 94 /* Kludge to get this from nouveau_drm.c. */ 95 extern struct drm_driver *const nouveau_drm_driver_pci; 96 97 static int 98 nouveau_pci_match(device_t parent, cfdata_t match, void *aux) 99 { 100 const struct pci_attach_args *const pa = aux; 101 struct pci_dev pdev; 102 struct nvkm_device *device; 103 int ret; 104 105 if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_NVIDIA && 106 PCI_VENDOR(pa->pa_id) != PCI_VENDOR_NVIDIA_SGS) 107 return 0; 108 109 if (PCI_CLASS(pa->pa_class) != PCI_CLASS_DISPLAY) 110 return 0; 111 112 /* 113 * NetBSD drm2 doesn't support Pascal, Volta or Turing based cards: 114 * 0x1580-0x15ff GP100 115 * 0x1b00-0x1b7f GP102 116 * 0x1b80-0x1bff GP104 117 * 0x1c00-0x1c7f GP106 118 * 0x1c80-0x1cff GP107 119 * 0x1d00-0x1d7f GP108 120 * 0x1d80-0x1dff GV100 121 * 0x1e00-0x1e7f TU102 122 * 0x1e80-0x1eff TU104 123 * 0x1f00-0x1f7f TU106 124 * 0x1f80-0x1fff TU117 125 * 0x2180-0x21ff TU116 126 * 127 * reduce this to >= 1580, so that new chipsets not explictly 128 * listed above will be picked up. 129 * 130 * XXX perhaps switch this to explicitly match known list. 131 */ 132 if (PCI_PRODUCT(pa->pa_id) >= 0x1580) 133 return 0; 134 135 linux_pci_dev_init(&pdev, parent /* XXX bogus */, parent, pa, 0); 136 ret = nvkm_device_pci_new(&pdev, NULL, "error", 137 /* detect */ true, /* mmio */ false, /* subdev_mask */ 0, &device); 138 if (ret == 0) /* don't want to hang onto it */ 139 nvkm_device_del(&device); 140 linux_pci_dev_destroy(&pdev); 141 if (ret) /* failure */ 142 return 0; 143 144 return 6; /* XXX Beat genfb_pci... */ 145 } 146 147 extern char *nouveau_config; 148 extern char *nouveau_debug; 149 150 static void 151 nouveau_pci_attach(device_t parent, device_t self, void *aux) 152 { 153 struct nouveau_pci_softc *const sc = device_private(self); 154 const struct pci_attach_args *const pa = aux; 155 156 pci_aprint_devinfo(pa, NULL); 157 158 if (!pmf_device_register(self, &nouveau_pci_suspend, &nouveau_pci_resume)) 159 aprint_error_dev(self, "unable to establish power handler\n"); 160 161 /* 162 * Trivial initialization first; the rest will come after we 163 * have mounted the root file system and can load firmware 164 * images. 165 */ 166 sc->sc_dev = NULL; 167 sc->sc_pa = *pa; 168 169 #ifdef FDT 170 /* 171 * XXX Remove the simple framebuffer, assuming that this device 172 * will take over. 173 */ 174 const char *fb_compatible[] = { "simple-framebuffer", NULL }; 175 fdt_remove_bycompat(fb_compatible); 176 #endif 177 178 config_mountroot(self, &nouveau_pci_attach_real); 179 } 180 181 static void 182 nouveau_pci_attach_real(device_t self) 183 { 184 struct nouveau_pci_softc *const sc = device_private(self); 185 const struct pci_attach_args *const pa = &sc->sc_pa; 186 int error; 187 188 sc->sc_dev = self; 189 sc->sc_task_state = NOUVEAU_TASK_ATTACH; 190 SIMPLEQ_INIT(&sc->sc_task_u.attach); 191 192 /* Initialize the Linux PCI device descriptor. */ 193 linux_pci_dev_init(&sc->sc_pci_dev, self, device_parent(self), pa, 0); 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 return; 204 } 205 206 /* XXX errno Linux->NetBSD */ 207 error = -drm_pci_attach(self, pa, &sc->sc_pci_dev, 208 nouveau_drm_driver_pci, 0, &sc->sc_drm_dev); 209 if (error) { 210 aprint_error_dev(self, "unable to attach drm: %d\n", error); 211 return; 212 } 213 214 while (!SIMPLEQ_EMPTY(&sc->sc_task_u.attach)) { 215 struct nouveau_pci_task *const task = 216 SIMPLEQ_FIRST(&sc->sc_task_u.attach); 217 218 SIMPLEQ_REMOVE_HEAD(&sc->sc_task_u.attach, nt_u.queue); 219 (*task->nt_fn)(task); 220 } 221 222 sc->sc_task_state = NOUVEAU_TASK_WORKQUEUE; 223 error = workqueue_create(&sc->sc_task_u.workqueue, "nouveau_pci", 224 &nouveau_pci_task_work, NULL, PRI_NONE, IPL_NONE, WQ_MPSAFE); 225 if (error) { 226 aprint_error_dev(self, "unable to create workqueue: %d\n", 227 error); 228 sc->sc_task_u.workqueue = NULL; 229 return; 230 } 231 } 232 233 static int 234 nouveau_pci_detach(device_t self, int flags) 235 { 236 struct nouveau_pci_softc *const sc = device_private(self); 237 int error; 238 239 if (sc->sc_dev == NULL) 240 /* Not done attaching. */ 241 return EBUSY; 242 243 /* XXX Check for in-use before tearing it all down... */ 244 error = config_detach_children(self, flags); 245 if (error) 246 return error; 247 248 if (sc->sc_task_state == NOUVEAU_TASK_ATTACH) 249 goto out0; 250 if (sc->sc_task_u.workqueue != NULL) { 251 workqueue_destroy(sc->sc_task_u.workqueue); 252 sc->sc_task_u.workqueue = NULL; 253 } 254 255 if (sc->sc_nv_dev == NULL) 256 goto out0; 257 258 if (sc->sc_drm_dev == NULL) 259 goto out1; 260 /* XXX errno Linux->NetBSD */ 261 error = -drm_pci_detach(sc->sc_drm_dev, flags); 262 if (error) 263 /* XXX Kinda too late to fail now... */ 264 return error; 265 sc->sc_drm_dev = NULL; 266 267 out1: nvkm_device_del(&sc->sc_nv_dev); 268 out0: linux_pci_dev_destroy(&sc->sc_pci_dev); 269 pmf_device_deregister(self); 270 return 0; 271 } 272 273 /* 274 * XXX Synchronize with nouveau_do_suspend in nouveau_drm.c. 275 */ 276 static bool 277 nouveau_pci_suspend(device_t self, const pmf_qual_t *qual __unused) 278 { 279 struct nouveau_pci_softc *const sc = device_private(self); 280 281 return nouveau_pmops_suspend(sc->sc_drm_dev) == 0; 282 } 283 284 static bool 285 nouveau_pci_resume(device_t self, const pmf_qual_t *qual) 286 { 287 struct nouveau_pci_softc *const sc = device_private(self); 288 289 return nouveau_pmops_resume(sc->sc_drm_dev) == 0; 290 } 291 292 static void 293 nouveau_pci_task_work(struct work *work, void *cookie __unused) 294 { 295 struct nouveau_pci_task *const task = container_of(work, 296 struct nouveau_pci_task, nt_u.work); 297 298 (*task->nt_fn)(task); 299 } 300 301 int 302 nouveau_pci_task_schedule(device_t self, struct nouveau_pci_task *task) 303 { 304 struct nouveau_pci_softc *const sc = device_private(self); 305 306 switch (sc->sc_task_state) { 307 case NOUVEAU_TASK_ATTACH: 308 SIMPLEQ_INSERT_TAIL(&sc->sc_task_u.attach, task, nt_u.queue); 309 return 0; 310 case NOUVEAU_TASK_WORKQUEUE: 311 if (sc->sc_task_u.workqueue == NULL) { 312 aprint_error_dev(self, "unable to schedule task\n"); 313 return EIO; 314 } 315 workqueue_enqueue(sc->sc_task_u.workqueue, &task->nt_u.work, 316 NULL); 317 return 0; 318 default: 319 panic("nouveau in invalid task state: %d\n", 320 (int)sc->sc_task_state); 321 } 322 } 323 324 extern struct drm_driver *const nouveau_drm_driver_stub; /* XXX */ 325 extern struct drm_driver *const nouveau_drm_driver_pci; /* XXX */ 326 327 static int 328 nouveau_pci_modcmd(modcmd_t cmd, void *arg __unused) 329 { 330 331 switch (cmd) { 332 case MODULE_CMD_INIT: 333 *nouveau_drm_driver_pci = *nouveau_drm_driver_stub; 334 nouveau_drm_driver_pci->set_busid = drm_pci_set_busid; 335 nouveau_drm_driver_pci->request_irq = drm_pci_request_irq; 336 nouveau_drm_driver_pci->free_irq = drm_pci_free_irq; 337 #if 0 /* XXX nouveau acpi */ 338 nouveau_register_dsm_handler(); 339 #endif 340 break; 341 case MODULE_CMD_FINI: 342 #if 0 /* XXX nouveau acpi */ 343 nouveau_unregister_dsm_handler(); 344 #endif 345 break; 346 default: 347 return ENOTTY; 348 } 349 350 return 0; 351 } 352
Indexes created Tue Sep 30 17:09:57 GMT 2025