/* $NetBSD: nouveau_pci.c,v 1.38 2023/08/07 16:34:57 riastradh Exp $ */ /*- * Copyright (c) 2015 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Taylor R. Campbell. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #include __KERNEL_RCSID(0, "$NetBSD: nouveau_pci.c,v 1.38 2023/08/07 16:34:57 riastradh Exp $"); #ifdef _KERNEL_OPT #include "genfb.h" #if defined(__arm__) || defined(__aarch64__) #include "opt_fdt.h" #endif #endif #include #include #include #include #include #include #ifdef FDT #include #endif #if NGENFB > 0 #include #include #endif #include #include #include #include #include "nouveau_drv.h" #include "nouveau_pci.h" struct drm_device; MODULE(MODULE_CLASS_DRIVER, nouveau_pci, "nouveau,drmkms_pci"); SIMPLEQ_HEAD(nouveau_pci_task_head, nouveau_pci_task); struct nouveau_pci_softc { device_t sc_dev; struct pci_attach_args sc_pa; struct lwp *sc_task_thread; struct nouveau_pci_task_head sc_tasks; struct workqueue *sc_task_wq; struct drm_device *sc_drm_dev; struct pci_dev sc_pci_dev; struct nvkm_device *sc_nv_dev; bool sc_pci_attached; bool sc_nvdev_inited; bool sc_dev_registered; }; static int nouveau_pci_match(device_t, cfdata_t, void *); static void nouveau_pci_attach(device_t, device_t, void *); static void nouveau_pci_attach_real(device_t); static int nouveau_pci_detach(device_t, int); static bool nouveau_pci_suspend(device_t, const pmf_qual_t *); static bool nouveau_pci_resume(device_t, const pmf_qual_t *); static void nouveau_pci_task_work(struct work *, void *); CFATTACH_DECL_NEW(nouveau_pci, sizeof(struct nouveau_pci_softc), nouveau_pci_match, nouveau_pci_attach, nouveau_pci_detach, NULL); /* Kludge to get this from nouveau_drm.c. */ extern struct drm_driver *const nouveau_drm_driver_pci; static int nouveau_pci_match(device_t parent, cfdata_t match, void *aux) { const struct pci_attach_args *const pa = aux; struct pci_dev pdev; struct nvkm_device *device; int ret; if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_NVIDIA && PCI_VENDOR(pa->pa_id) != PCI_VENDOR_NVIDIA_SGS) return 0; if (PCI_CLASS(pa->pa_class) != PCI_CLASS_DISPLAY) return 0; /* * NetBSD drm2/5.6 doesn't support Ampere (GTX 30 series) based cards: * 0x2080-0x20ff GA100 * 0x2200-0x227f GA102 * 0x2300-0x237f GA103 * 0x2480-0x24ff GA104 * 0x2500-0x257f GA106 * 0x2580-0x25ff GA107 * * TU116 (GTX 16xx) occupies the space from 0x2180-0x21ff. */ if (PCI_PRODUCT(pa->pa_id) >= 0x1fff && PCI_PRODUCT(pa->pa_id) < 0x2180) return 0; if (PCI_PRODUCT(pa->pa_id) >= 0x21ff) return 0; linux_pci_dev_init(&pdev, parent /* XXX bogus */, parent, pa, 0); ret = nvkm_device_pci_new(&pdev, NULL, "error", /* detect */ true, /* mmio */ false, /* subdev_mask */ 0, &device); if (ret == 0) /* don't want to hang onto it */ nvkm_device_del(&device); linux_pci_dev_destroy(&pdev); if (ret) /* failure */ return 0; return 6; /* XXX Beat genfb_pci... */ } extern char *nouveau_config; extern char *nouveau_debug; static void nouveau_pci_attach(device_t parent, device_t self, void *aux) { struct nouveau_pci_softc *const sc = device_private(self); const struct pci_attach_args *const pa = aux; int error; pci_aprint_devinfo(pa, NULL); /* Initialize the Linux PCI device descriptor. */ linux_pci_dev_init(&sc->sc_pci_dev, self, device_parent(self), pa, 0); sc->sc_dev = self; sc->sc_pa = *pa; sc->sc_task_thread = NULL; SIMPLEQ_INIT(&sc->sc_tasks); error = workqueue_create(&sc->sc_task_wq, "nouveau_pci", &nouveau_pci_task_work, NULL, PRI_NONE, IPL_NONE, WQ_MPSAFE); if (error) { aprint_error_dev(self, "unable to create workqueue: %d\n", error); sc->sc_task_wq = NULL; return; } #ifdef FDT /* * XXX Remove the simple framebuffer, assuming that this device * will take over. */ const char *fb_compatible[] = { "simple-framebuffer", NULL }; fdt_remove_bycompat(fb_compatible); #endif /* * Defer the remainder of initialization until we have mounted * the root file system and can load firmware images. */ config_mountroot(self, &nouveau_pci_attach_real); } static void nouveau_pci_attach_real(device_t self) { struct nouveau_pci_softc *const sc = device_private(self); int error; /* * Cause any tasks issued synchronously during attach to be * processed at the end of this function. */ sc->sc_task_thread = curlwp; /* XXX errno Linux->NetBSD */ error = -nvkm_device_pci_new(&sc->sc_pci_dev, nouveau_config, nouveau_debug, /* detect */ true, /* mmio */ true, /* subdev_mask */ ~0ULL, &sc->sc_nv_dev); if (error) { aprint_error_dev(self, "unable to create nouveau device: %d\n", error); sc->sc_nv_dev = NULL; goto out; } sc->sc_drm_dev = drm_dev_alloc(nouveau_drm_driver_pci, self); if (IS_ERR(sc->sc_drm_dev)) { aprint_error_dev(self, "unable to create drm device: %ld\n", PTR_ERR(sc->sc_drm_dev)); sc->sc_drm_dev = NULL; goto out; } /* XXX errno Linux->NetBSD */ error = -drm_pci_attach(sc->sc_drm_dev, &sc->sc_pci_dev); if (error) { aprint_error_dev(self, "unable to attach drm: %d\n", error); goto out; } sc->sc_pci_attached = true; #if NGENFB > 0 /* * If MD initialization has selected this as the console device * with a firmware-provided framebuffer address, we may have to * turn it off early, before we are ready to switch the console * over -- something goes wrong if we're still writing to the * firmware-provided framebuffer during nouveau initialization. */ { bool is_console; if (prop_dictionary_get_bool(device_properties(self), "is_console", &is_console) && is_console && genfb_is_console()) wsdisplay_predetach(); } #endif /* XXX errno Linux->NetBSD */ error = -nouveau_drm_device_init(sc->sc_drm_dev); if (error) { aprint_error_dev(self, "unable to init nouveau: %d\n", error); goto out; } sc->sc_nvdev_inited = true; /* XXX errno Linux->NetBSD */ error = -drm_dev_register(sc->sc_drm_dev, 0); if (error) { aprint_error_dev(self, "unable to register drm: %d\n", error); goto out; } sc->sc_dev_registered = true; if (!pmf_device_register(self, &nouveau_pci_suspend, &nouveau_pci_resume)) aprint_error_dev(self, "unable to establish power handler\n"); while (!SIMPLEQ_EMPTY(&sc->sc_tasks)) { struct nouveau_pci_task *const task = SIMPLEQ_FIRST(&sc->sc_tasks); SIMPLEQ_REMOVE_HEAD(&sc->sc_tasks, nt_u.queue); (*task->nt_fn)(task); } out: /* Cause any subesquent tasks to be processed by the workqueue. */ atomic_store_relaxed(&sc->sc_task_thread, NULL); } static int nouveau_pci_detach(device_t self, int flags) { struct nouveau_pci_softc *const sc = device_private(self); int error; /* XXX Check for in-use before tearing it all down... */ error = config_detach_children(self, flags); if (error) return error; pmf_device_deregister(self); if (sc->sc_dev_registered) drm_dev_unregister(sc->sc_drm_dev); if (sc->sc_nvdev_inited) nouveau_drm_device_fini(sc->sc_drm_dev); if (sc->sc_pci_attached) drm_pci_detach(sc->sc_drm_dev); if (sc->sc_drm_dev) { drm_dev_put(sc->sc_drm_dev); sc->sc_drm_dev = NULL; } if (sc->sc_nv_dev) nvkm_device_del(&sc->sc_nv_dev); if (sc->sc_task_wq) { workqueue_destroy(sc->sc_task_wq); sc->sc_task_wq = NULL; } linux_pci_dev_destroy(&sc->sc_pci_dev); return 0; } /* * XXX Synchronize with nouveau_do_suspend in nouveau_drm.c. */ static bool nouveau_pci_suspend(device_t self, const pmf_qual_t *qual __unused) { struct nouveau_pci_softc *const sc = device_private(self); struct drm_device *const dev = sc->sc_drm_dev; int ret; drm_suspend_ioctl(dev); ret = nouveau_pmops_suspend(dev); if (ret) return false; return true; } static bool nouveau_pci_resume(device_t self, const pmf_qual_t *qual) { struct nouveau_pci_softc *const sc = device_private(self); struct drm_device *const dev = sc->sc_drm_dev; int ret; ret = nouveau_pmops_resume(sc->sc_drm_dev); if (ret) goto out; out: drm_resume_ioctl(dev); return ret == 0; } static void nouveau_pci_task_work(struct work *work, void *cookie __unused) { struct nouveau_pci_task *const task = container_of(work, struct nouveau_pci_task, nt_u.work); (*task->nt_fn)(task); } void nouveau_pci_task_schedule(device_t self, struct nouveau_pci_task *task) { struct nouveau_pci_softc *const sc = device_private(self); if (atomic_load_relaxed(&sc->sc_task_thread) == curlwp) SIMPLEQ_INSERT_TAIL(&sc->sc_tasks, task, nt_u.queue); else workqueue_enqueue(sc->sc_task_wq, &task->nt_u.work, NULL); } extern struct drm_driver *const nouveau_drm_driver_stub; /* XXX */ extern struct drm_driver *const nouveau_drm_driver_pci; /* XXX */ static int nouveau_pci_modcmd(modcmd_t cmd, void *arg __unused) { switch (cmd) { case MODULE_CMD_INIT: *nouveau_drm_driver_pci = *nouveau_drm_driver_stub; nouveau_drm_driver_pci->request_irq = drm_pci_request_irq; nouveau_drm_driver_pci->free_irq = drm_pci_free_irq; #if 0 /* XXX nouveau acpi */ nouveau_register_dsm_handler(); #endif break; case MODULE_CMD_FINI: #if 0 /* XXX nouveau acpi */ nouveau_unregister_dsm_handler(); #endif break; default: return ENOTTY; } return 0; }