/* $NetBSD: radeon_pci.c,v 1.13 2018/08/27 14:12:14 riastradh Exp $ */ /*- * Copyright (c) 2014 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: radeon_pci.c,v 1.13 2018/08/27 14:12:14 riastradh Exp $"); #ifdef _KERNEL_OPT #include "vga.h" #endif #include #include #include #include #include #include #include #include #include #if NVGA > 0 /* * XXX All we really need is vga_is_console from vgavar.h, but the * header files are missing their own dependencies, so we need to * explicitly drag in the other crap. */ #include #include #include #include #endif #include #include #include #include "radeon_drv.h" #include "radeon_task.h" SIMPLEQ_HEAD(radeon_task_head, radeon_task); struct radeon_softc { device_t sc_dev; struct pci_attach_args sc_pa; enum { RADEON_TASK_ATTACH, RADEON_TASK_WORKQUEUE, } sc_task_state; union { struct workqueue *workqueue; struct radeon_task_head attach; } sc_task_u; struct drm_device *sc_drm_dev; struct pci_dev sc_pci_dev; #if defined(__i386__) #define RADEON_PCI_UGLY_MAP_HACK /* XXX Used to claim the VGA device before attach_real */ bus_space_handle_t sc_temp_memh; bool sc_temp_set; #endif }; struct radeon_device * radeon_device_private(device_t self) { struct radeon_softc *const sc = device_private(self); return sc->sc_drm_dev->dev_private; } static bool radeon_pci_lookup(const struct pci_attach_args *, unsigned long *); static int radeon_match(device_t, cfdata_t, void *); static void radeon_attach(device_t, device_t, void *); static void radeon_attach_real(device_t); static int radeon_detach(device_t, int); static bool radeon_do_suspend(device_t, const pmf_qual_t *); static bool radeon_do_resume(device_t, const pmf_qual_t *); static void radeon_task_work(struct work *, void *); CFATTACH_DECL_NEW(radeon, sizeof(struct radeon_softc), radeon_match, radeon_attach, radeon_detach, NULL); /* XXX Kludge to get these from radeon_drv.c. */ extern struct drm_driver *const radeon_drm_driver; extern const struct pci_device_id *const radeon_device_ids; extern const size_t radeon_n_device_ids; /* Set this to false if you want to match R100/R200 */ bool radeon_pci_ignore_r100_r200 = true; static bool radeon_pci_lookup(const struct pci_attach_args *pa, unsigned long *flags) { size_t i; enum radeon_family fam; for (i = 0; i < radeon_n_device_ids; i++) { if ((PCI_VENDOR(pa->pa_id) == radeon_device_ids[i].vendor) && (PCI_PRODUCT(pa->pa_id) == radeon_device_ids[i].device)) break; } /* Did we find it? */ if (i == radeon_n_device_ids) return false; /* NetBSD drm2 fails on R100 and many R200 chipsets, disable for now */ fam = radeon_device_ids[i].driver_data & RADEON_FAMILY_MASK; if (radeon_pci_ignore_r100_r200 && fam < CHIP_RV280) return false; if (flags) *flags = radeon_device_ids[i].driver_data; return true; } static int radeon_match(device_t parent, cfdata_t match, void *aux) { extern int radeon_guarantee_initialized(void); const struct pci_attach_args *const pa = aux; int error; error = radeon_guarantee_initialized(); if (error) { aprint_error("radeon: failed to initialize: %d\n", error); return 0; } if (!radeon_pci_lookup(pa, NULL)) return 0; return 6; /* XXX Beat genfb_pci... */ } static void radeon_attach(device_t parent, device_t self, void *aux) { struct radeon_softc *const sc = device_private(self); const struct pci_attach_args *const pa = aux; pci_aprint_devinfo(pa, NULL); if (!pmf_device_register(self, &radeon_do_suspend, &radeon_do_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; #ifdef RADEON_PCI_UGLY_MAP_HACK /* * XXX * We try to map the VGA registers, in case we can prevent vga@isa or * pcdisplay@isa attaching, and stealing wsdisplay0. This only works * with serial console, as actual VGA console has already mapped them. * The only way to handle that is for vga@isa to not attach. */ int rv = bus_space_map(pa->pa_memt, 0xb0000, 0x10000, 0, &sc->sc_temp_memh); sc->sc_temp_set = rv == 0; if (rv != 0) aprint_error_dev(self, "unable to reserve VGA registers for " "i386 radeondrmkms hack\n"); #endif config_mountroot(self, &radeon_attach_real); } static void radeon_attach_real(device_t self) { struct radeon_softc *const sc = device_private(self); const struct pci_attach_args *const pa = &sc->sc_pa; bool ok __diagused; unsigned long flags; int error; ok = radeon_pci_lookup(pa, &flags); KASSERT(ok); #ifdef RADEON_PCI_UGLY_MAP_HACK /* * XXX * Unmap the VGA registers. */ if (sc->sc_temp_set) bus_space_unmap(pa->pa_memt, sc->sc_temp_memh, 0x10000); #endif sc->sc_task_state = RADEON_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 = -drm_pci_attach(self, pa, &sc->sc_pci_dev, radeon_drm_driver, flags, &sc->sc_drm_dev); if (error) { aprint_error_dev(self, "unable to attach drm: %d\n", error); goto out; } while (!SIMPLEQ_EMPTY(&sc->sc_task_u.attach)) { struct radeon_task *const task = SIMPLEQ_FIRST(&sc->sc_task_u.attach); SIMPLEQ_REMOVE_HEAD(&sc->sc_task_u.attach, rt_u.queue); (*task->rt_fn)(task); } sc->sc_task_state = RADEON_TASK_WORKQUEUE; error = workqueue_create(&sc->sc_task_u.workqueue, "radeonfb", &radeon_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; goto out; } out: sc->sc_dev = self; } static int radeon_detach(device_t self, int flags) { struct radeon_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 == RADEON_TASK_ATTACH) goto out; if (sc->sc_task_u.workqueue != NULL) { workqueue_destroy(sc->sc_task_u.workqueue); sc->sc_task_u.workqueue = NULL; } if (sc->sc_drm_dev == NULL) goto out; /* 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; out: linux_pci_dev_destroy(&sc->sc_pci_dev); pmf_device_deregister(self); return 0; } static bool radeon_do_suspend(device_t self, const pmf_qual_t *qual) { struct radeon_softc *const sc = device_private(self); struct drm_device *const dev = sc->sc_drm_dev; int ret; bool is_console = true; /* XXX */ if (dev == NULL) return true; ret = radeon_suspend_kms(dev, true, is_console); if (ret) return false; return true; } static bool radeon_do_resume(device_t self, const pmf_qual_t *qual) { struct radeon_softc *const sc = device_private(self); struct drm_device *const dev = sc->sc_drm_dev; int ret; bool is_console = true; /* XXX */ if (dev == NULL) return true; ret = radeon_resume_kms(dev, true, is_console); if (ret) return false; return true; } static void radeon_task_work(struct work *work, void *cookie __unused) { struct radeon_task *const task = container_of(work, struct radeon_task, rt_u.work); (*task->rt_fn)(task); } int radeon_task_schedule(device_t self, struct radeon_task *task) { struct radeon_softc *const sc = device_private(self); switch (sc->sc_task_state) { case RADEON_TASK_ATTACH: SIMPLEQ_INSERT_TAIL(&sc->sc_task_u.attach, task, rt_u.queue); return 0; case RADEON_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->rt_u.work, NULL); return 0; default: panic("radeon in invalid task state: %d\n", (int)sc->sc_task_state); } }