1 /* 2 * Copyright 2014 Red Hat Inc. 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice shall be included in 12 * all copies or substantial portions of the Software. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 20 * OTHER DEALINGS IN THE SOFTWARE. 21 * 22 * Authors: Ben Skeggs <bskeggs@redhat.com> 23 */ 24 25 /******************************************************************************* 26 * NVIF client driver - NVKM directly linked 27 ******************************************************************************/ 28 29 #include <core/client.h> 30 #include <core/notify.h> 31 #include <core/ioctl.h> 32 33 #include <nvif/client.h> 34 #include <nvif/driver.h> 35 #include <nvif/notify.h> 36 #include <nvif/event.h> 37 #include <nvif/ioctl.h> 38 39 #include "nouveau_drv.h" 40 #include "nouveau_usif.h" 41 42 static void 43 nvkm_client_unmap(void *priv, void __iomem *ptr, u32 size) 44 { 45 iounmap(ptr); 46 } 47 48 static void __iomem * 49 nvkm_client_map(void *priv, u64 handle, u32 size) 50 { 51 return ioremap(handle, size); 52 } 53 54 static int 55 nvkm_client_ioctl(void *priv, bool super, void *data, u32 size, void **hack) 56 { 57 return nvkm_ioctl(priv, super, data, size, hack); 58 } 59 60 static int 61 nvkm_client_resume(void *priv) 62 { 63 return nvkm_client_init(priv); 64 } 65 66 static int 67 nvkm_client_suspend(void *priv) 68 { 69 return nvkm_client_fini(priv, true); 70 } 71 72 static void 73 nvkm_client_driver_fini(void *priv) 74 { 75 struct nvkm_client *client = priv; 76 nvkm_client_del(&client); 77 } 78 79 static int 80 nvkm_client_ntfy(const void *header, u32 length, const void *data, u32 size) 81 { 82 const union { 83 struct nvif_notify_req_v0 v0; 84 } *args = header; 85 u8 route; 86 87 if (length == sizeof(args->v0) && args->v0.version == 0) { 88 route = args->v0.route; 89 } else { 90 WARN_ON(1); 91 return NVKM_NOTIFY_DROP; 92 } 93 94 switch (route) { 95 case NVDRM_NOTIFY_NVIF: 96 return nvif_notify(header, length, data, size); 97 case NVDRM_NOTIFY_USIF: 98 return usif_notify(header, length, data, size); 99 default: 100 WARN_ON(1); 101 break; 102 } 103 104 return NVKM_NOTIFY_DROP; 105 } 106 107 static int 108 nvkm_client_driver_init(const char *name, u64 device, const char *cfg, 109 const char *dbg, void **ppriv) 110 { 111 struct nvkm_client *client; 112 int ret; 113 114 ret = nvkm_client_new(name, device, cfg, dbg, &client); 115 *ppriv = client; 116 if (ret) 117 return ret; 118 119 client->ntfy = nvkm_client_ntfy; 120 return 0; 121 } 122 123 const struct nvif_driver 124 nvif_driver_nvkm = { 125 .name = "nvkm", 126 .init = nvkm_client_driver_init, 127 .fini = nvkm_client_driver_fini, 128 .suspend = nvkm_client_suspend, 129 .resume = nvkm_client_resume, 130 .ioctl = nvkm_client_ioctl, 131 .map = nvkm_client_map, 132 .unmap = nvkm_client_unmap, 133 .keep = false, 134 }; 135