/* $NetBSD: nouveau_pci.c,v 1.24.2.1 2020/03/01 12:50:42 martin 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 1.24.2.1 2020/03/01 12:50:42 martin Exp $"); #include #include #include #include #include #include #include #include #include "nouveau_drm.h" #include "nouveau_pci.h" 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; enum { NOUVEAU_TASK_ATTACH, NOUVEAU_TASK_WORKQUEUE, } sc_task_state; union { struct workqueue *workqueue; struct nouveau_pci_task_head attach; } sc_task_u; struct drm_device *sc_drm_dev; struct pci_dev sc_pci_dev; struct nvkm_device *sc_nv_dev; }; 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 doesn't support Pascal, Volta or Turing based cards: * 0x1580-0x15ff GP100 * 0x1b00-0x1b7f GP102 * 0x1b80-0x1bff GP104 * 0x1c00-0x1c7f GP106 * 0x1c80-0x1cff GP107 * 0x1d00-0x1d7f GP108 * 0x1d80-0x1dff GV100 * 0x1e00-0x1e7f TU102 * 0x1e80-0x1eff TU104 * 0x1f00-0x1f7f TU106 * 0x1f80-0x1fff TU117 * 0x2180-0x21ff TU116 * * reduce this to >= 1580, so that new chipsets not explictly * listed above will be picked up. * * XXX perhaps switch this to explicitly match known list. */ if (PCI_PRODUCT(pa->pa_id) >= 0x1580) 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; pci_aprint_devinfo(pa, NULL); if (!pmf_device_register(self, &nouveau_pci_suspend, &nouveau_pci_resume)) aprint_error_dev(self, "unable to establish power handler\n"); /* * Trivial initialization first; the rest will come after we * have mounted the root file system and can load firmware * images. */ sc->sc_dev = NULL; sc->sc_pa = *pa; 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); const struct pci_attach_args *const pa = &sc->sc_pa; int error; sc->sc_dev = self; sc->sc_task_state = NOUVEAU_TASK_ATTACH; SIMPLEQ_INIT(&sc->sc_task_u.attach); /* Initialize the Linux PCI device descriptor. */ linux_pci_dev_init(&sc->sc_pci_dev, self, device_parent(self), pa, 0); /* 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); return; } /* XXX errno Linux->NetBSD */ error = -drm_pci_attach(self, pa, &sc->sc_pci_dev, nouveau_drm_driver_pci, 0, &sc->sc_drm_dev); if (error) { aprint_error_dev(self, "unable to attach drm: %d\n", error); return; } while (!SIMPLEQ_EMPTY(&sc->sc_task_u.attach)) { struct nouveau_pci_task *const task = SIMPLEQ_FIRST(&sc->sc_task_u.attach); SIMPLEQ_REMOVE_HEAD(&sc->sc_task_u.attach, nt_u.queue); (*task->nt_fn)(task); } sc->sc_task_state = NOUVEAU_TASK_WORKQUEUE; error = workqueue_create(&sc->sc_task_u.workqueue, "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_u.workqueue = NULL; return; } } static int nouveau_pci_detach(device_t self, int flags) { struct nouveau_pci_softc *const sc = device_private(self); int error; if (sc->sc_dev == NULL) /* Not done attaching. */ return EBUSY; /* XXX Check for in-use before tearing it all down... */ error = config_detach_children(self, flags); if (error) return error; if (sc->sc_task_state == NOUVEAU_TASK_ATTACH) goto out0; if (sc->sc_task_u.workqueue != NULL) { workqueue_destroy(sc->sc_task_u.workqueue); sc->sc_task_u.workqueue = NULL; } if (sc->sc_nv_dev == NULL) goto out0; if (sc->sc_drm_dev == NULL) goto out1; /* XXX errno Linux->NetBSD */ error = -drm_pci_detach(sc->sc_drm_dev, flags); if (error) /* XXX Kinda too late to fail now... */ return error; sc->sc_drm_dev = NULL; out1: nvkm_device_del(&sc->sc_nv_dev); out0: linux_pci_dev_destroy(&sc->sc_pci_dev); pmf_device_deregister(self); 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); return nouveau_pmops_suspend(sc->sc_drm_dev) == 0; } static bool nouveau_pci_resume(device_t self, const pmf_qual_t *qual) { struct nouveau_pci_softc *const sc = device_private(self); return nouveau_pmops_resume(sc->sc_drm_dev) == 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); } int nouveau_pci_task_schedule(device_t self, struct nouveau_pci_task *task) { struct nouveau_pci_softc *const sc = device_private(self); switch (sc->sc_task_state) { case NOUVEAU_TASK_ATTACH: SIMPLEQ_INSERT_TAIL(&sc->sc_task_u.attach, task, nt_u.queue); return 0; case NOUVEAU_TASK_WORKQUEUE: if (sc->sc_task_u.workqueue == NULL) { aprint_error_dev(self, "unable to schedule task\n"); return EIO; } workqueue_enqueue(sc->sc_task_u.workqueue, &task->nt_u.work, NULL); return 0; default: panic("nouveau in invalid task state: %d\n", (int)sc->sc_task_state); } } 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->set_busid = drm_pci_set_busid; 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; }