tegra_nouveau.c revision 1.7
1/* $NetBSD: tegra_nouveau.c,v 1.7 2015/10/27 13:21:19 riastradh Exp $ */ 2 3/*- 4 * Copyright (c) 2015 Jared D. McNeill <jmcneill@invisible.ca> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29#include "locators.h" 30 31#include <sys/cdefs.h> 32__KERNEL_RCSID(0, "$NetBSD: tegra_nouveau.c,v 1.7 2015/10/27 13:21:19 riastradh Exp $"); 33 34#include <sys/param.h> 35#include <sys/bus.h> 36#include <sys/device.h> 37#include <sys/intr.h> 38#include <sys/systm.h> 39#include <sys/kernel.h> 40#include <sys/module.h> 41 42#include <arm/nvidia/tegra_reg.h> 43#include <arm/nvidia/tegra_var.h> 44 45#include <drm/drmP.h> 46#include <engine/device.h> 47 48extern char *nouveau_config; 49extern char *nouveau_debug; 50extern struct drm_driver *const nouveau_drm_driver; 51 52static int tegra_nouveau_match(device_t, cfdata_t, void *); 53static void tegra_nouveau_attach(device_t, device_t, void *); 54 55struct tegra_nouveau_softc { 56 device_t sc_dev; 57 bus_dma_tag_t sc_dmat; 58 struct drm_device *sc_drm_dev; 59 struct platform_device sc_platform_dev; 60 struct nouveau_device *sc_nv_dev; 61}; 62 63static void tegra_nouveau_init(device_t); 64 65static int tegra_nouveau_get_irq(struct drm_device *); 66static const char *tegra_nouveau_get_name(struct drm_device *); 67static int tegra_nouveau_set_busid(struct drm_device *, 68 struct drm_master *); 69static int tegra_nouveau_irq_install(struct drm_device *, 70 irqreturn_t (*)(void *), 71 int, const char *, void *, 72 struct drm_bus_irq_cookie **); 73static void tegra_nouveau_irq_uninstall(struct drm_device *, 74 struct drm_bus_irq_cookie *); 75 76static struct drm_bus drm_tegra_nouveau_bus = { 77 .bus_type = DRIVER_BUS_PLATFORM, 78 .get_irq = tegra_nouveau_get_irq, 79 .get_name = tegra_nouveau_get_name, 80 .set_busid = tegra_nouveau_set_busid, 81 .irq_install = tegra_nouveau_irq_install, 82 .irq_uninstall = tegra_nouveau_irq_uninstall 83}; 84 85CFATTACH_DECL_NEW(tegra_nouveau, sizeof(struct tegra_nouveau_softc), 86 tegra_nouveau_match, tegra_nouveau_attach, NULL, NULL); 87 88static int 89tegra_nouveau_match(device_t parent, cfdata_t cf, void *aux) 90{ 91 return 1; 92} 93 94static void 95tegra_nouveau_attach(device_t parent, device_t self, void *aux) 96{ 97 struct tegra_nouveau_softc * const sc = device_private(self); 98 struct tegraio_attach_args * const tio = aux; 99#if notyet 100 const struct tegra_locators * const loc = &tio->tio_loc; 101#endif 102 prop_dictionary_t prop = device_properties(self); 103 int error; 104 105 sc->sc_dev = self; 106 sc->sc_dmat = tio->tio_dmat; 107 108 aprint_naive("\n"); 109 aprint_normal(": GPU\n"); 110 111 prop_dictionary_get_cstring(prop, "debug", &nouveau_debug); 112 prop_dictionary_get_cstring(prop, "config", &nouveau_config); 113 114 tegra_car_gpu_enable(); 115 116 error = -nouveau_device_create(&sc->sc_platform_dev, 117 NOUVEAU_BUS_PLATFORM, -1, device_xname(self), 118 nouveau_config, nouveau_debug, &sc->sc_nv_dev); 119 if (error) { 120 aprint_error_dev(self, "couldn't create nouveau device: %d\n", 121 error); 122 return; 123 } 124 125 config_mountroot(self, tegra_nouveau_init); 126} 127 128static void 129tegra_nouveau_init(device_t self) 130{ 131 struct tegra_nouveau_softc * const sc = device_private(self); 132 struct drm_driver * const driver = nouveau_drm_driver; 133 struct drm_device *dev; 134 bus_space_tag_t bst = &armv7_generic_bs_tag; 135 int error; 136 137 driver->kdriver.platform_device = &sc->sc_platform_dev; 138 driver->bus = &drm_tegra_nouveau_bus; 139 140 dev = drm_dev_alloc(driver, sc->sc_dev); 141 if (dev == NULL) { 142 aprint_error_dev(self, "couldn't allocate DRM device\n"); 143 return; 144 } 145 dev->bst = bst; 146 dev->bus_dmat = sc->sc_dmat; 147 dev->dmat = dev->bus_dmat; 148 dev->dmat_subregion_p = false; 149 dev->platformdev = &sc->sc_platform_dev; 150 151 dev->platformdev->id = -1; 152 dev->platformdev->pd_dev = sc->sc_dev; 153 dev->platformdev->dmat = sc->sc_dmat; 154 dev->platformdev->nresource = 2; 155 dev->platformdev->resource[0].tag = bst; 156 dev->platformdev->resource[0].start = TEGRA_GPU_BASE; 157 dev->platformdev->resource[0].len = 0x01000000; 158 dev->platformdev->resource[1].tag = bst; 159 dev->platformdev->resource[1].start = TEGRA_GPU_BASE + 160 dev->platformdev->resource[0].len; 161 dev->platformdev->resource[1].len = 0x01000000; 162 163 error = -drm_dev_register(dev, 0); 164 if (error) { 165 drm_dev_unref(dev); 166 aprint_error_dev(self, "couldn't register DRM device: %d\n", 167 error); 168 return; 169 } 170 171 aprint_normal_dev(self, "initialized %s %d.%d.%d %s on minor %d\n", 172 driver->name, driver->major, driver->minor, driver->patchlevel, 173 driver->date, dev->primary->index); 174} 175 176static int 177tegra_nouveau_get_irq(struct drm_device *dev) 178{ 179 return TEGRA_INTR_GPU; 180} 181 182static const char *tegra_nouveau_get_name(struct drm_device *dev) 183{ 184 return "tegra_nouveau"; 185} 186 187static int 188tegra_nouveau_set_busid(struct drm_device *dev, struct drm_master *master) 189{ 190 int id; 191 192 id = dev->platformdev->id; 193 if (id < 0) 194 id = 0; 195 196 master->unique = kmem_asprintf("platform:tegra_nouveau:%02d", id); 197 if (master->unique == NULL) 198 return -ENOMEM; 199 master->unique_len = strlen(master->unique); 200 201 return 0; 202} 203 204static int 205tegra_nouveau_irq_install(struct drm_device *dev, 206 irqreturn_t (*handler)(void *), int flags, const char *name, void *arg, 207 struct drm_bus_irq_cookie **cookiep) 208{ 209 void *ih; 210 int irq = TEGRA_INTR_GPU; 211 212 ih = intr_establish(irq, IPL_DRM, IST_LEVEL, handler, arg); 213 if (ih == NULL) { 214 aprint_error_dev(dev->dev, 215 "couldn't establish interrupt (%s)\n", name); 216 return -ENOENT; 217 } 218 219 aprint_normal_dev(dev->dev, "interrupting on irq %d (%s)\n", 220 irq, name); 221 *cookiep = (struct drm_bus_irq_cookie *)ih; 222 return 0; 223} 224 225static void 226tegra_nouveau_irq_uninstall(struct drm_device *dev, 227 struct drm_bus_irq_cookie *cookie) 228{ 229 intr_disestablish(cookie); 230} 231