drm_pci.c revision 1.1.2.5
1 /* $NetBSD: drm_pci.c,v 1.1.2.5 2013/07/24 03:54:14 riastradh Exp $ */ 2 3 /*- 4 * Copyright (c) 2013 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: drm_pci.c,v 1.1.2.5 2013/07/24 03:54:14 riastradh Exp $"); 34 35 #include <sys/types.h> 36 #include <sys/errno.h> 37 #include <sys/systm.h> 38 39 #include <dev/pci/pcivar.h> 40 41 #include <drm/drmP.h> 42 43 static int drm_pci_get_irq(struct drm_device *); 44 static int drm_pci_irq_install(struct drm_device *, 45 irqreturn_t (*)(void *), int, const char *, void *, 46 struct drm_bus_irq_cookie **); 47 static void drm_pci_irq_uninstall(struct drm_device *, 48 struct drm_bus_irq_cookie *); 49 static const char * 50 drm_pci_get_name(struct drm_device *); 51 static int drm_pci_set_busid(struct drm_device *, struct drm_master *); 52 static int drm_pci_set_unique(struct drm_device *, struct drm_master *, 53 struct drm_unique *); 54 static int drm_pci_irq_by_busid(struct drm_device *, 55 struct drm_irq_busid *); 56 static int drm_pci_agp_init(struct drm_device *); 57 58 const struct drm_bus drm_pci_bus = { 59 .bus_type = DRIVER_BUS_PCI, 60 .get_irq = drm_pci_get_irq, 61 .irq_install = drm_pci_irq_install, 62 .irq_uninstall = drm_pci_irq_uninstall, 63 .get_name = drm_pci_get_name, 64 .set_busid = drm_pci_set_busid, 65 .set_unique = drm_pci_set_unique, 66 .irq_by_busid = drm_pci_irq_by_busid, 67 .agp_init = drm_pci_agp_init, 68 }; 69 70 static const struct pci_attach_args * 71 drm_pci_attach_args(struct drm_device *dev) 72 { 73 return &dev->pdev->pd_pa; 74 } 75 76 void 77 drm_pci_attach(device_t self, const struct pci_attach_args *pa, 78 struct pci_dev *pdev, struct drm_device *dev) 79 { 80 81 dev->driver->bus = &drm_pci_bus; 82 83 linux_pci_dev_init(pdev, self, pa, 0); 84 85 dev->pdev = pdev; 86 dev->pci_vendor = pdev->vendor; 87 dev->pci_device = pdev->device; 88 89 /* XXX Set the power state to D0? */ 90 } 91 92 int 93 drm_pci_detach(struct drm_device *dev __unused, int flags __unused) 94 { 95 96 /* XXX Disestablish irqs or anything? */ 97 return 0; 98 } 99 100 static int 101 drm_pci_get_irq(struct drm_device *dev) 102 { 103 pci_intr_handle_t ih_pih; 104 int ih_int; 105 106 /* 107 * This is a compile-time assertion that the types match. If 108 * this fails, we have to change a bunch of drm code that uses 109 * int for intr handles. 110 */ 111 KASSERT(&ih_pih != &ih_int); 112 113 if (pci_intr_map(drm_pci_attach_args(dev), &ih_pih)) 114 return -1; /* XXX Hope -1 is an invalid intr handle. */ 115 116 ih_int = ih_pih; 117 return ih_int; 118 } 119 120 static int 121 drm_pci_irq_install(struct drm_device *dev, irqreturn_t (*handler)(void *), 122 int flags, const char *name, void *arg, 123 struct drm_bus_irq_cookie **cookiep) 124 { 125 const struct pci_attach_args *const pa = drm_pci_attach_args(dev); 126 pci_intr_handle_t ih; 127 const char *intrstr; 128 void *ih_cookie; 129 130 if (pci_intr_map(pa, &ih)) 131 return -ENOENT; 132 133 intrstr = pci_intr_string(pa->pa_pc, ih); 134 ih_cookie = pci_intr_establish(pa->pa_pc, ih, IPL_DRM, handler, arg); 135 if (ih_cookie == NULL) { 136 aprint_error_dev(dev->dev, 137 "couldn't establish interrupt at %s (%s)\n", 138 intrstr, name); 139 return -ENOENT; 140 } 141 142 aprint_normal_dev(dev->dev, "interrupting at %s (%s)\n", 143 intrstr, name); 144 *cookiep = (struct drm_bus_irq_cookie *)ih_cookie; 145 return 0; 146 } 147 148 static void 149 drm_pci_irq_uninstall(struct drm_device *dev, 150 struct drm_bus_irq_cookie *cookie) 151 { 152 const struct pci_attach_args *pa = drm_pci_attach_args(dev); 153 154 pci_intr_disestablish(pa->pa_pc, (void *)cookie); 155 } 156 157 static const char * 158 drm_pci_get_name(struct drm_device *dev) 159 { 160 return "pci"; /* XXX PCI bus names? */ 161 } 162 163 static int 164 drm_pci_set_busid(struct drm_device *dev, struct drm_master *master) 165 { 166 return -ENOSYS; /* XXX PCI bus ids? */ 167 } 168 169 static int 170 drm_pci_set_unique(struct drm_device *dev, struct drm_master *master, 171 struct drm_unique *unique) 172 { 173 return -ENOSYS; /* XXX */ 174 } 175 176 static int 177 drm_pci_irq_by_busid(struct drm_device *dev, struct drm_irq_busid *busid) 178 { 179 return -ENOSYS; /* XXX */ 180 } 181 182 static int 183 drm_pci_agp_init(struct drm_device *dev) 184 { 185 return 0; /* XXX */ 186 } 187
Indexes created Thu Oct 02 14:10:14 GMT 2025