nouveau_nvif.c revision 1.4.2.3
1 /* $NetBSD: nouveau_nvif.c,v 1.4.2.3 2018/09/30 01:45:54 pgoyette Exp $ */ 2 3 /* 4 * Copyright 2014 Red Hat Inc. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the "Software"), 8 * to deal in the Software without restriction, including without limitation 9 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 10 * and/or sell copies of the Software, and to permit persons to whom the 11 * Software is furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included in 14 * all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 22 * OTHER DEALINGS IN THE SOFTWARE. 23 * 24 * Authors: Ben Skeggs <bskeggs (at) redhat.com> 25 */ 26 27 /******************************************************************************* 28 * NVIF client driver - NVKM directly linked 29 ******************************************************************************/ 30 31 #include <sys/cdefs.h> 32 __KERNEL_RCSID(0, "$NetBSD: nouveau_nvif.c,v 1.4.2.3 2018/09/30 01:45:54 pgoyette Exp $"); 33 34 #include <core/client.h> 35 #include <core/notify.h> 36 #include <core/ioctl.h> 37 38 #include <nvif/client.h> 39 #include <nvif/driver.h> 40 #include <nvif/notify.h> 41 #include <nvif/event.h> 42 #include <nvif/ioctl.h> 43 44 #include "nouveau_drm.h" 45 #include "nouveau_usif.h" 46 47 #ifdef __NetBSD__ 48 #define __iomem __nvif_iomem 49 static int 50 nvkm_client_map(void *priv, bus_space_tag_t tag, u64 busaddr, u32 size, 51 bus_space_handle_t *handlep, void __iomem **ptrp) 52 { 53 struct nvkm_client *client = nvxx_client(priv); 54 int ret; 55 56 if (tag == client->mmiot && 57 client->mmioaddr <= busaddr && 58 busaddr - client->mmioaddr <= client->mmiosz) { 59 const bus_size_t offset = busaddr - client->mmioaddr; 60 if (size > client->mmiosz - offset) { 61 DRM_ERROR("Invalid register access\n"); 62 return -EFAULT; 63 } 64 ret = -bus_space_subregion(client->mmiot, client->mmioh, 65 offset, size, handlep); 66 if (ret) 67 return ret; 68 *ptrp = bus_space_vaddr(tag, *handlep); 69 return 0; 70 } 71 72 ret = -bus_space_map(tag, busaddr, size, BUS_SPACE_MAP_LINEAR, 73 handlep); 74 if (ret) 75 return ret; 76 *ptrp = bus_space_vaddr(tag, *handlep); 77 return 0; 78 } 79 80 static void 81 nvkm_client_unmap(void *priv, bus_space_tag_t tag, bus_space_handle_t handle, 82 bus_addr_t busaddr, void __iomem *ptr, u32 size) 83 { 84 struct nvkm_client *client = nvxx_client(priv); 85 86 KASSERTMSG(ptr == bus_space_vaddr(tag, handle), 87 "nvkm_client ptr %p != %p [bus_space_vaddr(%p, %"PRIxVADDR")]", 88 ptr, bus_space_vaddr(tag, handle), tag, handle); 89 90 if (tag == client->mmiot && 91 client->mmioaddr <= busaddr && 92 busaddr - client->mmioaddr <= client->mmiosz) { 93 __diagused const bus_size_t offset = busaddr - client->mmioaddr; 94 KASSERT(size <= client->mmiosz - offset); 95 /* Nothing to do to release a subregion. */ 96 return; 97 } 98 99 bus_space_unmap(tag, handle, size); 100 } 101 #else 102 static void 103 nvkm_client_unmap(void *priv, void __iomem *ptr, u32 size) 104 { 105 iounmap(ptr); 106 } 107 108 static void __iomem * 109 nvkm_client_map(void *priv, u64 handle, u32 size) 110 { 111 return ioremap(handle, size); 112 } 113 #endif 114 115 static int 116 nvkm_client_ioctl(void *priv, bool super, void *data, u32 size, void **hack) 117 { 118 return nvkm_ioctl(priv, super, data, size, hack); 119 } 120 121 static int 122 nvkm_client_resume(void *priv) 123 { 124 return nvkm_client_init(priv); 125 } 126 127 static int 128 nvkm_client_suspend(void *priv) 129 { 130 return nvkm_client_fini(priv, true); 131 } 132 133 static void 134 nvkm_client_driver_fini(void *priv) 135 { 136 struct nvkm_client *client = priv; 137 nvkm_client_del(&client); 138 } 139 140 static int 141 nvkm_client_ntfy(const void *header, u32 length, const void *data, u32 size) 142 { 143 const union { 144 struct nvif_notify_req_v0 v0; 145 } *args = header; 146 u8 route; 147 148 if (length == sizeof(args->v0) && args->v0.version == 0) { 149 route = args->v0.route; 150 } else { 151 WARN_ON(1); 152 return NVKM_NOTIFY_DROP; 153 } 154 155 switch (route) { 156 case NVDRM_NOTIFY_NVIF: 157 return nvif_notify(header, length, data, size); 158 case NVDRM_NOTIFY_USIF: 159 return usif_notify(header, length, data, size); 160 default: 161 WARN_ON(1); 162 break; 163 } 164 165 return NVKM_NOTIFY_DROP; 166 } 167 168 static int 169 nvkm_client_driver_init(const char *name, u64 device, const char *cfg, 170 const char *dbg, void **ppriv) 171 { 172 struct nvkm_client *client; 173 int ret; 174 175 ret = nvkm_client_new(name, device, cfg, dbg, &client); 176 *ppriv = client; 177 if (ret) 178 return ret; 179 180 client->ntfy = nvkm_client_ntfy; 181 return 0; 182 } 183 184 const struct nvif_driver 185 nvif_driver_nvkm = { 186 .name = "nvkm", 187 .init = nvkm_client_driver_init, 188 .fini = nvkm_client_driver_fini, 189 .suspend = nvkm_client_suspend, 190 .resume = nvkm_client_resume, 191 .ioctl = nvkm_client_ioctl, 192 .map = nvkm_client_map, 193 .unmap = nvkm_client_unmap, 194 .keep = false, 195 }; 196
Indexes created Tue Oct 21 12:09:54 GMT 2025