nouveau_pci.c revision 1.9
1 /* $NetBSD: nouveau_pci.c,v 1.9 2018/05/21 08:58:47 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 1.9 2018/05/21 08:58:47 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 /* 98 * NetBSD drm2 doesn't support Pascal-based cards: 99 * 0x1580-0x15ff GP100 100 * 0x1b00-0x1b7f GP102 101 * 0x1b80-0x1bff GP104 102 * 0x1c00-0x1c7f GP106 103 * 0x1c80-0x1cff GP107 104 * 0x1d00-0x1d7f GP108 105 * 0x1d80-0x1dff GV100 106 */ 107 108 if (IS_BETWEEN(0x1580, 0x15ff) || 109 IS_BETWEEN(0x1b00, 0x1b7f) || 110 IS_BETWEEN(0x1b80, 0x1bff) || 111 IS_BETWEEN(0x1c00, 0x1c7f) || 112 IS_BETWEEN(0x1c80, 0x1cff) || 113 IS_BETWEEN(0x1d00, 0x1d7f) || 114 IS_BETWEEN(0x1d80, 0x1dff)) 115 return 0; 116 #undef IS_BETWEEN 117 118 return 6; /* XXX Beat genfb_pci... */ 119 } 120 121 extern char *nouveau_config; 122 extern char *nouveau_debug; 123 124 static void 125 nouveau_pci_attach(device_t parent, device_t self, void *aux) 126 { 127 struct nouveau_pci_softc *const sc = device_private(self); 128 const struct pci_attach_args *const pa = aux; 129 uint64_t devname; 130 int error; 131 132 pci_aprint_devinfo(pa, NULL); 133 134 sc->sc_dev = self; 135 136 if (!pmf_device_register(self, &nouveau_pci_suspend, 137 &nouveau_pci_resume)) 138 aprint_error_dev(self, "unable to establish power handler\n"); 139 140 sc->sc_task_state = NOUVEAU_TASK_ATTACH; 141 SIMPLEQ_INIT(&sc->sc_task_u.attach); 142 143 devname = (uint64_t)device_unit(device_parent(self)) << 32; 144 devname |= pa->pa_bus << 16; 145 /* XXX errno Linux->NetBSD */ 146 error = -nouveau_device_create(&sc->sc_pci_dev, NOUVEAU_BUS_PCI, 147 devname, device_xname(self), nouveau_config, nouveau_debug, 148 &sc->sc_nv_dev); 149 if (error) { 150 aprint_error_dev(self, "unable to create nouveau device: %d\n", 151 error); 152 return; 153 } 154 155 /* XXX errno Linux->NetBSD */ 156 error = -drm_pci_attach(self, pa, &sc->sc_pci_dev, nouveau_drm_driver, 157 0, &sc->sc_drm_dev); 158 if (error) { 159 aprint_error_dev(self, "unable to attach drm: %d\n", error); 160 return; 161 } 162 163 while (!SIMPLEQ_EMPTY(&sc->sc_task_u.attach)) { 164 struct nouveau_pci_task *const task = 165 SIMPLEQ_FIRST(&sc->sc_task_u.attach); 166 167 SIMPLEQ_REMOVE_HEAD(&sc->sc_task_u.attach, nt_u.queue); 168 (*task->nt_fn)(task); 169 } 170 171 sc->sc_task_state = NOUVEAU_TASK_WORKQUEUE; 172 error = workqueue_create(&sc->sc_task_u.workqueue, "nouveau_pci", 173 &nouveau_pci_task_work, NULL, PRI_NONE, IPL_NONE, WQ_MPSAFE); 174 if (error) { 175 aprint_error_dev(self, "unable to create workqueue: %d\n", 176 error); 177 sc->sc_task_u.workqueue = NULL; 178 return; 179 } 180 } 181 182 static int 183 nouveau_pci_detach(device_t self, int flags) 184 { 185 struct nouveau_pci_softc *const sc = device_private(self); 186 int error; 187 188 /* XXX Check for in-use before tearing it all down... */ 189 error = config_detach_children(self, flags); 190 if (error) 191 return error; 192 193 if (sc->sc_task_state == NOUVEAU_TASK_ATTACH) 194 goto out0; 195 if (sc->sc_task_u.workqueue != NULL) { 196 workqueue_destroy(sc->sc_task_u.workqueue); 197 sc->sc_task_u.workqueue = NULL; 198 } 199 200 if (sc->sc_nv_dev == NULL) 201 goto out0; 202 203 if (sc->sc_drm_dev == NULL) 204 goto out1; 205 /* XXX errno Linux->NetBSD */ 206 error = -drm_pci_detach(sc->sc_drm_dev, flags); 207 if (error) 208 /* XXX Kinda too late to fail now... */ 209 return error; 210 sc->sc_drm_dev = NULL; 211 212 out1: nouveau_object_ref(NULL, (void *)&sc->sc_nv_dev); 213 out0: pmf_device_deregister(self); 214 return 0; 215 } 216 217 /* 218 * XXX Synchronize with nouveau_do_suspend in nouveau_drm.c. 219 */ 220 static bool 221 nouveau_pci_suspend(device_t self, const pmf_qual_t *qual __unused) 222 { 223 struct nouveau_pci_softc *const sc = device_private(self); 224 225 return nouveau_pmops_suspend(sc->sc_drm_dev) == 0; 226 } 227 228 static bool 229 nouveau_pci_resume(device_t self, const pmf_qual_t *qual) 230 { 231 struct nouveau_pci_softc *const sc = device_private(self); 232 233 return nouveau_pmops_resume(sc->sc_drm_dev) == 0; 234 } 235 236 static void 237 nouveau_pci_task_work(struct work *work, void *cookie __unused) 238 { 239 struct nouveau_pci_task *const task = container_of(work, 240 struct nouveau_pci_task, nt_u.work); 241 242 (*task->nt_fn)(task); 243 } 244 245 int 246 nouveau_pci_task_schedule(device_t self, struct nouveau_pci_task *task) 247 { 248 struct nouveau_pci_softc *const sc = device_private(self); 249 250 switch (sc->sc_task_state) { 251 case NOUVEAU_TASK_ATTACH: 252 SIMPLEQ_INSERT_TAIL(&sc->sc_task_u.attach, task, nt_u.queue); 253 return 0; 254 case NOUVEAU_TASK_WORKQUEUE: 255 if (sc->sc_task_u.workqueue == NULL) { 256 aprint_error_dev(self, "unable to schedule task\n"); 257 return EIO; 258 } 259 workqueue_enqueue(sc->sc_task_u.workqueue, &task->nt_u.work, 260 NULL); 261 return 0; 262 default: 263 panic("nouveau in invalid task state: %d\n", 264 (int)sc->sc_task_state); 265 } 266 } 267 268 static int 269 nouveau_pci_modcmd(modcmd_t cmd, void *arg __unused) 270 { 271 int error; 272 273 switch (cmd) { 274 case MODULE_CMD_INIT: 275 error = drm_pci_init(nouveau_drm_driver, NULL); 276 if (error) { 277 aprint_error("nouveau_pci: failed to init: %d\n", 278 error); 279 return error; 280 } 281 #if 0 /* XXX nouveau acpi */ 282 nouveau_register_dsm_handler(); 283 #endif 284 break; 285 case MODULE_CMD_FINI: 286 #if 0 /* XXX nouveau acpi */ 287 nouveau_unregister_dsm_handler(); 288 #endif 289 drm_pci_exit(nouveau_drm_driver, NULL); 290 break; 291 default: 292 return ENOTTY; 293 } 294 295 return 0; 296 } 297
Indexes created Tue Sep 30 17:09:57 GMT 2025