nouveau_pci.c revision 1.26
1 /* $NetBSD: nouveau_pci.c,v 1.26 2020/02/03 16:52:13 jmcneill 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 1.26 2020/02/03 16:52:13 jmcneill 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 #include <drm/drmP.h> 48 49 #include <core/device.h> 50 #include <core/pci.h> 51 52 #ifdef FDT 53 #include <dev/fdt/fdtvar.h> 54 #endif 55 56 #include "nouveau_drm.h" 57 #include "nouveau_pci.h" 58 59 MODULE(MODULE_CLASS_DRIVER, nouveau_pci, "nouveau,drmkms_pci"); 60 61 SIMPLEQ_HEAD(nouveau_pci_task_head, nouveau_pci_task); 62 63 struct nouveau_pci_softc { 64 device_t sc_dev; 65 struct pci_attach_args sc_pa; 66 enum { 67 NOUVEAU_TASK_ATTACH, 68 NOUVEAU_TASK_WORKQUEUE, 69 } sc_task_state; 70 union { 71 struct workqueue *workqueue; 72 struct nouveau_pci_task_head attach; 73 } sc_task_u; 74 struct drm_device *sc_drm_dev; 75 struct pci_dev sc_pci_dev; 76 struct nvkm_device *sc_nv_dev; 77 }; 78 79 static int nouveau_pci_match(device_t, cfdata_t, void *); 80 static void nouveau_pci_attach(device_t, device_t, void *); 81 static void nouveau_pci_attach_real(device_t); 82 static int nouveau_pci_detach(device_t, int); 83 84 static bool nouveau_pci_suspend(device_t, const pmf_qual_t *); 85 static bool nouveau_pci_resume(device_t, const pmf_qual_t *); 86 87 static void nouveau_pci_task_work(struct work *, void *); 88 89 CFATTACH_DECL_NEW(nouveau_pci, sizeof(struct nouveau_pci_softc), 90 nouveau_pci_match, nouveau_pci_attach, nouveau_pci_detach, NULL); 91 92 /* Kludge to get this from nouveau_drm.c. */ 93 extern struct drm_driver *const nouveau_drm_driver_pci; 94 95 static int 96 nouveau_pci_match(device_t parent, cfdata_t match, void *aux) 97 { 98 const struct pci_attach_args *const pa = aux; 99 struct pci_dev pdev; 100 struct nvkm_device *device; 101 int ret; 102 103 if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_NVIDIA && 104 PCI_VENDOR(pa->pa_id) != PCI_VENDOR_NVIDIA_SGS) 105 return 0; 106 107 if (PCI_CLASS(pa->pa_class) != PCI_CLASS_DISPLAY) 108 return 0; 109 110 /* 111 * NetBSD drm2 doesn't support Pascal, Volta or Turing based cards: 112 * 0x1580-0x15ff GP100 113 * 0x1b00-0x1b7f GP102 114 * 0x1b80-0x1bff GP104 115 * 0x1c00-0x1c7f GP106 116 * 0x1c80-0x1cff GP107 117 * 0x1d00-0x1d7f GP108 118 * 0x1d80-0x1dff GV100 119 * 0x1e00-0x1e7f TU102 120 * 0x1e80-0x1eff TU104 121 * 0x1f00-0x1f7f TU106 122 * 0x1f80-0x1fff TU117 123 * 0x2180-0x21ff TU116 124 * 125 * reduce this to >= 1580, so that new chipsets not explictly 126 * listed above will be picked up. 127 * 128 * XXX perhaps switch this to explicitly match known list. 129 */ 130 if (PCI_PRODUCT(pa->pa_id) >= 0x1580) 131 return 0; 132 133 linux_pci_dev_init(&pdev, parent /* XXX bogus */, parent, pa, 0); 134 ret = nvkm_device_pci_new(&pdev, NULL, "error", 135 /* detect */ true, /* mmio */ false, /* subdev_mask */ 0, &device); 136 if (ret == 0) /* don't want to hang onto it */ 137 nvkm_device_del(&device); 138 linux_pci_dev_destroy(&pdev); 139 if (ret) /* failure */ 140 return 0; 141 142 return 6; /* XXX Beat genfb_pci... */ 143 } 144 145 extern char *nouveau_config; 146 extern char *nouveau_debug; 147 148 static void 149 nouveau_pci_attach(device_t parent, device_t self, void *aux) 150 { 151 struct nouveau_pci_softc *const sc = device_private(self); 152 const struct pci_attach_args *const pa = aux; 153 154 pci_aprint_devinfo(pa, NULL); 155 156 if (!pmf_device_register(self, &nouveau_pci_suspend, &nouveau_pci_resume)) 157 aprint_error_dev(self, "unable to establish power handler\n"); 158 159 /* 160 * Trivial initialization first; the rest will come after we 161 * have mounted the root file system and can load firmware 162 * images. 163 */ 164 sc->sc_dev = NULL; 165 sc->sc_pa = *pa; 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 config_mountroot(self, &nouveau_pci_attach_real); 177 } 178 179 static void 180 nouveau_pci_attach_real(device_t self) 181 { 182 struct nouveau_pci_softc *const sc = device_private(self); 183 const struct pci_attach_args *const pa = &sc->sc_pa; 184 int error; 185 186 sc->sc_dev = self; 187 sc->sc_task_state = NOUVEAU_TASK_ATTACH; 188 SIMPLEQ_INIT(&sc->sc_task_u.attach); 189 190 /* Initialize the Linux PCI device descriptor. */ 191 linux_pci_dev_init(&sc->sc_pci_dev, self, device_parent(self), pa, 0); 192 193 /* XXX errno Linux->NetBSD */ 194 error = -nvkm_device_pci_new(&sc->sc_pci_dev, 195 nouveau_config, nouveau_debug, 196 /* detect */ true, /* mmio */ true, /* subdev_mask */ ~0ULL, 197 &sc->sc_nv_dev); 198 if (error) { 199 aprint_error_dev(self, "unable to create nouveau device: %d\n", 200 error); 201 return; 202 } 203 204 /* XXX errno Linux->NetBSD */ 205 error = -drm_pci_attach(self, pa, &sc->sc_pci_dev, 206 nouveau_drm_driver_pci, 0, &sc->sc_drm_dev); 207 if (error) { 208 aprint_error_dev(self, "unable to attach drm: %d\n", error); 209 return; 210 } 211 212 while (!SIMPLEQ_EMPTY(&sc->sc_task_u.attach)) { 213 struct nouveau_pci_task *const task = 214 SIMPLEQ_FIRST(&sc->sc_task_u.attach); 215 216 SIMPLEQ_REMOVE_HEAD(&sc->sc_task_u.attach, nt_u.queue); 217 (*task->nt_fn)(task); 218 } 219 220 sc->sc_task_state = NOUVEAU_TASK_WORKQUEUE; 221 error = workqueue_create(&sc->sc_task_u.workqueue, "nouveau_pci", 222 &nouveau_pci_task_work, NULL, PRI_NONE, IPL_NONE, WQ_MPSAFE); 223 if (error) { 224 aprint_error_dev(self, "unable to create workqueue: %d\n", 225 error); 226 sc->sc_task_u.workqueue = NULL; 227 return; 228 } 229 } 230 231 static int 232 nouveau_pci_detach(device_t self, int flags) 233 { 234 struct nouveau_pci_softc *const sc = device_private(self); 235 int error; 236 237 if (sc->sc_dev == NULL) 238 /* Not done attaching. */ 239 return EBUSY; 240 241 /* XXX Check for in-use before tearing it all down... */ 242 error = config_detach_children(self, flags); 243 if (error) 244 return error; 245 246 if (sc->sc_task_state == NOUVEAU_TASK_ATTACH) 247 goto out0; 248 if (sc->sc_task_u.workqueue != NULL) { 249 workqueue_destroy(sc->sc_task_u.workqueue); 250 sc->sc_task_u.workqueue = NULL; 251 } 252 253 if (sc->sc_nv_dev == NULL) 254 goto out0; 255 256 if (sc->sc_drm_dev == NULL) 257 goto out1; 258 /* XXX errno Linux->NetBSD */ 259 error = -drm_pci_detach(sc->sc_drm_dev, flags); 260 if (error) 261 /* XXX Kinda too late to fail now... */ 262 return error; 263 sc->sc_drm_dev = NULL; 264 265 out1: nvkm_device_del(&sc->sc_nv_dev); 266 out0: linux_pci_dev_destroy(&sc->sc_pci_dev); 267 pmf_device_deregister(self); 268 return 0; 269 } 270 271 /* 272 * XXX Synchronize with nouveau_do_suspend in nouveau_drm.c. 273 */ 274 static bool 275 nouveau_pci_suspend(device_t self, const pmf_qual_t *qual __unused) 276 { 277 struct nouveau_pci_softc *const sc = device_private(self); 278 279 return nouveau_pmops_suspend(sc->sc_drm_dev) == 0; 280 } 281 282 static bool 283 nouveau_pci_resume(device_t self, const pmf_qual_t *qual) 284 { 285 struct nouveau_pci_softc *const sc = device_private(self); 286 287 return nouveau_pmops_resume(sc->sc_drm_dev) == 0; 288 } 289 290 static void 291 nouveau_pci_task_work(struct work *work, void *cookie __unused) 292 { 293 struct nouveau_pci_task *const task = container_of(work, 294 struct nouveau_pci_task, nt_u.work); 295 296 (*task->nt_fn)(task); 297 } 298 299 int 300 nouveau_pci_task_schedule(device_t self, struct nouveau_pci_task *task) 301 { 302 struct nouveau_pci_softc *const sc = device_private(self); 303 304 switch (sc->sc_task_state) { 305 case NOUVEAU_TASK_ATTACH: 306 SIMPLEQ_INSERT_TAIL(&sc->sc_task_u.attach, task, nt_u.queue); 307 return 0; 308 case NOUVEAU_TASK_WORKQUEUE: 309 if (sc->sc_task_u.workqueue == NULL) { 310 aprint_error_dev(self, "unable to schedule task\n"); 311 return EIO; 312 } 313 workqueue_enqueue(sc->sc_task_u.workqueue, &task->nt_u.work, 314 NULL); 315 return 0; 316 default: 317 panic("nouveau in invalid task state: %d\n", 318 (int)sc->sc_task_state); 319 } 320 } 321 322 extern struct drm_driver *const nouveau_drm_driver_stub; /* XXX */ 323 extern struct drm_driver *const nouveau_drm_driver_pci; /* XXX */ 324 325 static int 326 nouveau_pci_modcmd(modcmd_t cmd, void *arg __unused) 327 { 328 329 switch (cmd) { 330 case MODULE_CMD_INIT: 331 *nouveau_drm_driver_pci = *nouveau_drm_driver_stub; 332 nouveau_drm_driver_pci->set_busid = drm_pci_set_busid; 333 nouveau_drm_driver_pci->request_irq = drm_pci_request_irq; 334 nouveau_drm_driver_pci->free_irq = drm_pci_free_irq; 335 #if 0 /* XXX nouveau acpi */ 336 nouveau_register_dsm_handler(); 337 #endif 338 break; 339 case MODULE_CMD_FINI: 340 #if 0 /* XXX nouveau acpi */ 341 nouveau_unregister_dsm_handler(); 342 #endif 343 break; 344 default: 345 return ENOTTY; 346 } 347 348 return 0; 349 } 350
Indexes created Tue Sep 30 17:09:57 GMT 2025