nouveau_pci.c revision 1.20
1 /* $NetBSD: nouveau_pci.c,v 1.20 2018/08/27 14:18:54 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 1.20 2018/08/27 14:18:54 riastradh Exp $"); 34 35 #include <sys/types.h> 36 #include <sys/device.h> 37 #include <sys/queue.h> 38 #include <sys/workqueue.h> 39 #include <sys/module.h> 40 41 #include <drm/drmP.h> 42 43 #include <core/device.h> 44 #include <core/pci.h> 45 46 #include "nouveau_drm.h" 47 #include "nouveau_pci.h" 48 49 MODULE(MODULE_CLASS_DRIVER, nouveau_pci, "nouveau,drmkms_pci"); 50 51 SIMPLEQ_HEAD(nouveau_pci_task_head, nouveau_pci_task); 52 53 struct nouveau_pci_softc { 54 device_t sc_dev; 55 enum { 56 NOUVEAU_TASK_ATTACH, 57 NOUVEAU_TASK_WORKQUEUE, 58 } sc_task_state; 59 union { 60 struct workqueue *workqueue; 61 struct nouveau_pci_task_head attach; 62 } sc_task_u; 63 struct drm_device *sc_drm_dev; 64 struct pci_dev sc_pci_dev; 65 struct nvkm_device *sc_nv_dev; 66 }; 67 68 static int nouveau_pci_match(device_t, cfdata_t, void *); 69 static void nouveau_pci_attach(device_t, device_t, void *); 70 static int nouveau_pci_detach(device_t, int); 71 72 static bool nouveau_pci_suspend(device_t, const pmf_qual_t *); 73 static bool nouveau_pci_resume(device_t, const pmf_qual_t *); 74 75 static void nouveau_pci_task_work(struct work *, void *); 76 77 CFATTACH_DECL_NEW(nouveau_pci, sizeof(struct nouveau_pci_softc), 78 nouveau_pci_match, nouveau_pci_attach, nouveau_pci_detach, NULL); 79 80 /* Kludge to get this from nouveau_drm.c. */ 81 extern struct drm_driver *const nouveau_drm_driver_pci; 82 83 static int 84 nouveau_pci_match(device_t parent, cfdata_t match, void *aux) 85 { 86 const struct pci_attach_args *const pa = aux; 87 struct pci_dev pdev; 88 struct nvkm_device *device; 89 int ret; 90 91 if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_NVIDIA && 92 PCI_VENDOR(pa->pa_id) != PCI_VENDOR_NVIDIA_SGS) 93 return 0; 94 95 if (PCI_CLASS(pa->pa_class) != PCI_CLASS_DISPLAY) 96 return 0; 97 98 #define IS_BETWEEN(x,y) \ 99 (PCI_PRODUCT(pa->pa_id) >= (x) && PCI_PRODUCT(pa->pa_id) <= (y)) 100 /* 101 * NetBSD drm2 needs missing-so-far firmware for Maxwell-based cards: 102 * 0x1380-0x13bf GM107 103 */ 104 if (IS_BETWEEN(0x1380, 0x13bf)) 105 return 0; 106 107 /* 108 * NetBSD drm2 doesn't support Pascal-based cards: 109 * 0x1580-0x15ff GP100 110 * 0x1b00-0x1b7f GP102 111 * 0x1b80-0x1bff GP104 112 * 0x1c00-0x1c7f GP106 113 * 0x1c80-0x1cff GP107 114 * 0x1d00-0x1d7f GP108 115 * 0x1d80-0x1dff GV100 116 */ 117 118 if (IS_BETWEEN(0x1580, 0x15ff) || 119 IS_BETWEEN(0x1b00, 0x1b7f) || 120 IS_BETWEEN(0x1b80, 0x1bff) || 121 IS_BETWEEN(0x1c00, 0x1c7f) || 122 IS_BETWEEN(0x1c80, 0x1cff) || 123 IS_BETWEEN(0x1d00, 0x1d7f) || 124 IS_BETWEEN(0x1d80, 0x1dff)) 125 return 0; 126 #undef IS_BETWEEN 127 128 linux_pci_dev_init(&pdev, parent /* XXX bogus */, parent, pa, 0); 129 ret = nvkm_device_pci_new(&pdev, NULL, "error", 130 /* detect */ true, /* mmio */ false, /* subdev_mask */ 0, &device); 131 if (ret == 0) /* don't want to hang onto it */ 132 nvkm_device_del(&device); 133 linux_pci_dev_destroy(&pdev); 134 if (ret) /* failure */ 135 return 0; 136 137 return 6; /* XXX Beat genfb_pci... */ 138 } 139 140 extern char *nouveau_config; 141 extern char *nouveau_debug; 142 143 static void 144 nouveau_pci_attach(device_t parent, device_t self, void *aux) 145 { 146 struct nouveau_pci_softc *const sc = device_private(self); 147 const struct pci_attach_args *const pa = aux; 148 int error; 149 150 pci_aprint_devinfo(pa, NULL); 151 152 sc->sc_dev = self; 153 154 /* Initialize the Linux PCI device descriptor. */ 155 linux_pci_dev_init(&sc->sc_pci_dev, self, device_parent(self), pa, 0); 156 157 if (!pmf_device_register(self, &nouveau_pci_suspend, 158 &nouveau_pci_resume)) 159 aprint_error_dev(self, "unable to establish power handler\n"); 160 161 sc->sc_task_state = NOUVEAU_TASK_ATTACH; 162 SIMPLEQ_INIT(&sc->sc_task_u.attach); 163 164 /* XXX errno Linux->NetBSD */ 165 error = -nvkm_device_pci_new(&sc->sc_pci_dev, 166 nouveau_config, nouveau_debug, 167 /* detect */ true, /* mmio */ true, /* subdev_mask */ ~0ULL, 168 &sc->sc_nv_dev); 169 if (error) { 170 aprint_error_dev(self, "unable to create nouveau device: %d\n", 171 error); 172 return; 173 } 174 175 /* XXX errno Linux->NetBSD */ 176 error = -drm_pci_attach(self, pa, &sc->sc_pci_dev, 177 nouveau_drm_driver_pci, 0, &sc->sc_drm_dev); 178 if (error) { 179 aprint_error_dev(self, "unable to attach drm: %d\n", error); 180 return; 181 } 182 183 while (!SIMPLEQ_EMPTY(&sc->sc_task_u.attach)) { 184 struct nouveau_pci_task *const task = 185 SIMPLEQ_FIRST(&sc->sc_task_u.attach); 186 187 SIMPLEQ_REMOVE_HEAD(&sc->sc_task_u.attach, nt_u.queue); 188 (*task->nt_fn)(task); 189 } 190 191 sc->sc_task_state = NOUVEAU_TASK_WORKQUEUE; 192 error = workqueue_create(&sc->sc_task_u.workqueue, "nouveau_pci", 193 &nouveau_pci_task_work, NULL, PRI_NONE, IPL_NONE, WQ_MPSAFE); 194 if (error) { 195 aprint_error_dev(self, "unable to create workqueue: %d\n", 196 error); 197 sc->sc_task_u.workqueue = NULL; 198 return; 199 } 200 } 201 202 static int 203 nouveau_pci_detach(device_t self, int flags) 204 { 205 struct nouveau_pci_softc *const sc = device_private(self); 206 int error; 207 208 /* XXX Check for in-use before tearing it all down... */ 209 error = config_detach_children(self, flags); 210 if (error) 211 return error; 212 213 if (sc->sc_task_state == NOUVEAU_TASK_ATTACH) 214 goto out0; 215 if (sc->sc_task_u.workqueue != NULL) { 216 workqueue_destroy(sc->sc_task_u.workqueue); 217 sc->sc_task_u.workqueue = NULL; 218 } 219 220 if (sc->sc_nv_dev == NULL) 221 goto out0; 222 223 if (sc->sc_drm_dev == NULL) 224 goto out1; 225 /* XXX errno Linux->NetBSD */ 226 error = -drm_pci_detach(sc->sc_drm_dev, flags); 227 if (error) 228 /* XXX Kinda too late to fail now... */ 229 return error; 230 sc->sc_drm_dev = NULL; 231 232 out1: nvkm_device_del(&sc->sc_nv_dev); 233 out0: linux_pci_dev_destroy(&sc->sc_pci_dev); 234 pmf_device_deregister(self); 235 return 0; 236 } 237 238 /* 239 * XXX Synchronize with nouveau_do_suspend in nouveau_drm.c. 240 */ 241 static bool 242 nouveau_pci_suspend(device_t self, const pmf_qual_t *qual __unused) 243 { 244 struct nouveau_pci_softc *const sc = device_private(self); 245 246 return nouveau_pmops_suspend(sc->sc_drm_dev) == 0; 247 } 248 249 static bool 250 nouveau_pci_resume(device_t self, const pmf_qual_t *qual) 251 { 252 struct nouveau_pci_softc *const sc = device_private(self); 253 254 return nouveau_pmops_resume(sc->sc_drm_dev) == 0; 255 } 256 257 static void 258 nouveau_pci_task_work(struct work *work, void *cookie __unused) 259 { 260 struct nouveau_pci_task *const task = container_of(work, 261 struct nouveau_pci_task, nt_u.work); 262 263 (*task->nt_fn)(task); 264 } 265 266 int 267 nouveau_pci_task_schedule(device_t self, struct nouveau_pci_task *task) 268 { 269 struct nouveau_pci_softc *const sc = device_private(self); 270 271 switch (sc->sc_task_state) { 272 case NOUVEAU_TASK_ATTACH: 273 SIMPLEQ_INSERT_TAIL(&sc->sc_task_u.attach, task, nt_u.queue); 274 return 0; 275 case NOUVEAU_TASK_WORKQUEUE: 276 if (sc->sc_task_u.workqueue == NULL) { 277 aprint_error_dev(self, "unable to schedule task\n"); 278 return EIO; 279 } 280 workqueue_enqueue(sc->sc_task_u.workqueue, &task->nt_u.work, 281 NULL); 282 return 0; 283 default: 284 panic("nouveau in invalid task state: %d\n", 285 (int)sc->sc_task_state); 286 } 287 } 288 289 static int 290 nouveau_pci_modcmd(modcmd_t cmd, void *arg __unused) 291 { 292 int error; 293 294 switch (cmd) { 295 case MODULE_CMD_INIT: 296 error = drm_pci_init(nouveau_drm_driver_pci, NULL); 297 if (error) { 298 aprint_error("nouveau_pci: failed to init: %d\n", 299 error); 300 return error; 301 } 302 #if 0 /* XXX nouveau acpi */ 303 nouveau_register_dsm_handler(); 304 #endif 305 break; 306 case MODULE_CMD_FINI: 307 #if 0 /* XXX nouveau acpi */ 308 nouveau_unregister_dsm_handler(); 309 #endif 310 drm_pci_exit(nouveau_drm_driver_pci, NULL); 311 break; 312 default: 313 return ENOTTY; 314 } 315 316 return 0; 317 } 318
Indexes created Tue Sep 30 11:09:46 GMT 2025