1 /* 2 * Copyright 2018 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 #include <nvif/fifo.h> 23 24 static int 25 nvif_fifo_runlists(struct nvif_device *device) 26 { 27 struct nvif_object *object = &device->object; 28 struct { 29 struct nv_device_info_v1 m; 30 struct { 31 struct nv_device_info_v1_data runlists; 32 struct nv_device_info_v1_data runlist[64]; 33 } v; 34 } *a; 35 int ret, i; 36 37 if (device->runlist) 38 return 0; 39 40 if (!(a = kmalloc(sizeof(*a), GFP_KERNEL))) 41 return -ENOMEM; 42 a->m.version = 1; 43 a->m.count = sizeof(a->v) / sizeof(a->v.runlists); 44 a->v.runlists.mthd = NV_DEVICE_FIFO_RUNLISTS; 45 for (i = 0; i < ARRAY_SIZE(a->v.runlist); i++) 46 a->v.runlist[i].mthd = NV_DEVICE_FIFO_RUNLIST_ENGINES(i); 47 48 ret = nvif_object_mthd(object, NV_DEVICE_V0_INFO, a, sizeof(*a)); 49 if (ret) 50 goto done; 51 52 device->runlists = fls64(a->v.runlists.data); 53 device->runlist = kcalloc(device->runlists, sizeof(*device->runlist), 54 GFP_KERNEL); 55 if (!device->runlist) { 56 ret = -ENOMEM; 57 goto done; 58 } 59 60 for (i = 0; i < device->runlists; i++) { 61 if (a->v.runlists.data & BIT_ULL(i)) 62 device->runlist[i].engines = a->v.runlist[i].data; 63 } 64 65 done: 66 kfree(a); 67 return ret; 68 } 69 70 u64 71 nvif_fifo_runlist(struct nvif_device *device, u64 engine) 72 { 73 struct nvif_object *object = &device->object; 74 struct { 75 struct nv_device_info_v1 m; 76 struct { 77 struct nv_device_info_v1_data engine; 78 } v; 79 } a = { 80 .m.version = 1, 81 .m.count = sizeof(a.v) / sizeof(a.v.engine), 82 .v.engine.mthd = engine, 83 }; 84 u64 runm = 0; 85 int ret, i; 86 87 if ((ret = nvif_fifo_runlists(device))) 88 return runm; 89 90 ret = nvif_object_mthd(object, NV_DEVICE_V0_INFO, &a, sizeof(a)); 91 if (ret == 0) { 92 for (i = 0; i < device->runlists; i++) { 93 if (device->runlist[i].engines & a.v.engine.data) 94 runm |= BIT_ULL(i); 95 } 96 } 97 98 return runm; 99 } 100