1 /* $NetBSD: nouveau_pci.c,v 1.11 2018/05/31 23:46:59 mrg 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 1.11 2018/05/31 23:46:59 mrg 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 <engine/device.h> 44 45 #include "nouveau_drm.h" 46 #include "nouveau_pci.h" 47 48 MODULE(MODULE_CLASS_DRIVER, nouveau_pci, "nouveau,drmkms_pci"); 49 50 SIMPLEQ_HEAD(nouveau_pci_task_head, nouveau_pci_task); 51 52 struct nouveau_pci_softc { 53 device_t sc_dev; 54 enum { 55 NOUVEAU_TASK_ATTACH, 56 NOUVEAU_TASK_WORKQUEUE, 57 } sc_task_state; 58 union { 59 struct workqueue *workqueue; 60 struct nouveau_pci_task_head attach; 61 } sc_task_u; 62 struct drm_device *sc_drm_dev; 63 struct pci_dev sc_pci_dev; 64 struct nouveau_device *sc_nv_dev; 65 }; 66 67 static int nouveau_pci_match(device_t, cfdata_t, void *); 68 static void nouveau_pci_attach(device_t, device_t, void *); 69 static int nouveau_pci_detach(device_t, int); 70 71 static bool nouveau_pci_suspend(device_t, const pmf_qual_t *); 72 static bool nouveau_pci_resume(device_t, const pmf_qual_t *); 73 74 static void nouveau_pci_task_work(struct work *, void *); 75 76 CFATTACH_DECL_NEW(nouveau_pci, sizeof(struct nouveau_pci_softc), 77 nouveau_pci_match, nouveau_pci_attach, nouveau_pci_detach, NULL); 78 79 /* Kludge to get this from nouveau_drm.c. */ 80 extern struct drm_driver *const nouveau_drm_driver; 81 82 static int 83 nouveau_pci_match(device_t parent, cfdata_t match, void *aux) 84 { 85 const struct pci_attach_args *const pa = aux; 86 87 if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_NVIDIA && 88 PCI_VENDOR(pa->pa_id) != PCI_VENDOR_NVIDIA_SGS) 89 return 0; 90 91 if (PCI_CLASS(pa->pa_class) != PCI_CLASS_DISPLAY) 92 return 0; 93 94 #define IS_BETWEEN(x,y) \ 95 (PCI_PRODUCT(pa->pa_id) >= (x) && PCI_PRODUCT(pa->pa_id) <= (y)) 96 /* 97 * NetBSD drm2 needs missing-so-far firmware for Maxwell-based cards: 98 * 0x1380-0x13bf GM107 99 */ 100 if (IS_BETWEEN(0x1380, 0x13bf)) 101 return 0; 102 103 /* 104 * NetBSD drm2 doesn't support Pascal-based cards: 105 * 0x1580-0x15ff GP100 106 * 0x1b00-0x1b7f GP102 107 * 0x1b80-0x1bff GP104 108 * 0x1c00-0x1c7f GP106 109 * 0x1c80-0x1cff GP107 110 * 0x1d00-0x1d7f GP108 111 * 0x1d80-0x1dff GV100 112 */ 113 114 if (IS_BETWEEN(0x1580, 0x15ff) || 115 IS_BETWEEN(0x1b00, 0x1b7f) || 116 IS_BETWEEN(0x1b80, 0x1bff) || 117 IS_BETWEEN(0x1c00, 0x1c7f) || 118 IS_BETWEEN(0x1c80, 0x1cff) || 119 IS_BETWEEN(0x1d00, 0x1d7f) || 120 IS_BETWEEN(0x1d80, 0x1dff)) 121 return 0; 122 #undef IS_BETWEEN 123 124 return 6; /* XXX Beat genfb_pci... */ 125 } 126 127 extern char *nouveau_config; 128 extern char *nouveau_debug; 129 130 static void 131 nouveau_pci_attach(device_t parent, device_t self, void *aux) 132 { 133 struct nouveau_pci_softc *const sc = device_private(self); 134 const struct pci_attach_args *const pa = aux; 135 uint64_t devname; 136 int error; 137 138 pci_aprint_devinfo(pa, NULL); 139 140 sc->sc_dev = self; 141 142 if (!pmf_device_register(self, &nouveau_pci_suspend, 143 &nouveau_pci_resume)) 144 aprint_error_dev(self, "unable to establish power handler\n"); 145 146 sc->sc_task_state = NOUVEAU_TASK_ATTACH; 147 SIMPLEQ_INIT(&sc->sc_task_u.attach); 148 149 devname = (uint64_t)device_unit(device_parent(self)) << 32; 150 devname |= pa->pa_bus << 16; 151 /* XXX errno Linux->NetBSD */ 152 error = -nouveau_device_create(&sc->sc_pci_dev, NOUVEAU_BUS_PCI, 153 devname, device_xname(self), nouveau_config, nouveau_debug, 154 &sc->sc_nv_dev); 155 if (error) { 156 aprint_error_dev(self, "unable to create nouveau device: %d\n", 157 error); 158 return; 159 } 160 161 /* XXX errno Linux->NetBSD */ 162 error = -drm_pci_attach(self, pa, &sc->sc_pci_dev, nouveau_drm_driver, 163 0, &sc->sc_drm_dev); 164 if (error) { 165 aprint_error_dev(self, "unable to attach drm: %d\n", error); 166 return; 167 } 168 169 while (!SIMPLEQ_EMPTY(&sc->sc_task_u.attach)) { 170 struct nouveau_pci_task *const task = 171 SIMPLEQ_FIRST(&sc->sc_task_u.attach); 172 173 SIMPLEQ_REMOVE_HEAD(&sc->sc_task_u.attach, nt_u.queue); 174 (*task->nt_fn)(task); 175 } 176 177 sc->sc_task_state = NOUVEAU_TASK_WORKQUEUE; 178 error = workqueue_create(&sc->sc_task_u.workqueue, "nouveau_pci", 179 &nouveau_pci_task_work, NULL, PRI_NONE, IPL_NONE, WQ_MPSAFE); 180 if (error) { 181 aprint_error_dev(self, "unable to create workqueue: %d\n", 182 error); 183 sc->sc_task_u.workqueue = NULL; 184 return; 185 } 186 } 187 188 static int 189 nouveau_pci_detach(device_t self, int flags) 190 { 191 struct nouveau_pci_softc *const sc = device_private(self); 192 int error; 193 194 /* XXX Check for in-use before tearing it all down... */ 195 error = config_detach_children(self, flags); 196 if (error) 197 return error; 198 199 if (sc->sc_task_state == NOUVEAU_TASK_ATTACH) 200 goto out0; 201 if (sc->sc_task_u.workqueue != NULL) { 202 workqueue_destroy(sc->sc_task_u.workqueue); 203 sc->sc_task_u.workqueue = NULL; 204 } 205 206 if (sc->sc_nv_dev == NULL) 207 goto out0; 208 209 if (sc->sc_drm_dev == NULL) 210 goto out1; 211 /* XXX errno Linux->NetBSD */ 212 error = -drm_pci_detach(sc->sc_drm_dev, flags); 213 if (error) 214 /* XXX Kinda too late to fail now... */ 215 return error; 216 sc->sc_drm_dev = NULL; 217 218 out1: nouveau_object_ref(NULL, (void *)&sc->sc_nv_dev); 219 out0: pmf_device_deregister(self); 220 return 0; 221 } 222 223 /* 224 * XXX Synchronize with nouveau_do_suspend in nouveau_drm.c. 225 */ 226 static bool 227 nouveau_pci_suspend(device_t self, const pmf_qual_t *qual __unused) 228 { 229 struct nouveau_pci_softc *const sc = device_private(self); 230 231 return nouveau_pmops_suspend(sc->sc_drm_dev) == 0; 232 } 233 234 static bool 235 nouveau_pci_resume(device_t self, const pmf_qual_t *qual) 236 { 237 struct nouveau_pci_softc *const sc = device_private(self); 238 239 return nouveau_pmops_resume(sc->sc_drm_dev) == 0; 240 } 241 242 static void 243 nouveau_pci_task_work(struct work *work, void *cookie __unused) 244 { 245 struct nouveau_pci_task *const task = container_of(work, 246 struct nouveau_pci_task, nt_u.work); 247 248 (*task->nt_fn)(task); 249 } 250 251 int 252 nouveau_pci_task_schedule(device_t self, struct nouveau_pci_task *task) 253 { 254 struct nouveau_pci_softc *const sc = device_private(self); 255 256 switch (sc->sc_task_state) { 257 case NOUVEAU_TASK_ATTACH: 258 SIMPLEQ_INSERT_TAIL(&sc->sc_task_u.attach, task, nt_u.queue); 259 return 0; 260 case NOUVEAU_TASK_WORKQUEUE: 261 if (sc->sc_task_u.workqueue == NULL) { 262 aprint_error_dev(self, "unable to schedule task\n"); 263 return EIO; 264 } 265 workqueue_enqueue(sc->sc_task_u.workqueue, &task->nt_u.work, 266 NULL); 267 return 0; 268 default: 269 panic("nouveau in invalid task state: %d\n", 270 (int)sc->sc_task_state); 271 } 272 } 273 274 static int 275 nouveau_pci_modcmd(modcmd_t cmd, void *arg __unused) 276 { 277 int error; 278 279 switch (cmd) { 280 case MODULE_CMD_INIT: 281 error = drm_pci_init(nouveau_drm_driver, NULL); 282 if (error) { 283 aprint_error("nouveau_pci: failed to init: %d\n", 284 error); 285 return error; 286 } 287 #if 0 /* XXX nouveau acpi */ 288 nouveau_register_dsm_handler(); 289 #endif 290 break; 291 case MODULE_CMD_FINI: 292 #if 0 /* XXX nouveau acpi */ 293 nouveau_unregister_dsm_handler(); 294 #endif 295 drm_pci_exit(nouveau_drm_driver, NULL); 296 break; 297 default: 298 return ENOTTY; 299 } 300 301 return 0; 302 } 303