1 /* 2 * Copyright 2012 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 23 */ 24 #include "priv.h" 25 26 #include <core/option.h> 27 #include <subdev/top.h> 28 29 void 30 nvkm_mc_unk260(struct nvkm_device *device, u32 data) 31 { 32 struct nvkm_mc *mc = device->mc; 33 if (likely(mc) && mc->func->unk260) 34 mc->func->unk260(mc, data); 35 } 36 37 void 38 nvkm_mc_intr_mask(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, bool en) 39 { 40 struct nvkm_subdev *subdev = nvkm_device_subdev(device, type, inst); 41 42 if (subdev) { 43 if (en) 44 nvkm_intr_allow(subdev, NVKM_INTR_SUBDEV); 45 else 46 nvkm_intr_block(subdev, NVKM_INTR_SUBDEV); 47 } 48 } 49 50 static u32 51 nvkm_mc_reset_mask(struct nvkm_device *device, bool isauto, enum nvkm_subdev_type type, int inst) 52 { 53 struct nvkm_mc *mc = device->mc; 54 const struct nvkm_mc_map *map; 55 u64 pmc_enable = 0; 56 if (likely(mc)) { 57 if (!(pmc_enable = nvkm_top_reset(device, type, inst))) { 58 for (map = mc->func->reset; map && map->stat; map++) { 59 if (!isauto || !map->noauto) { 60 if (map->type == type && map->inst == inst) { 61 pmc_enable = map->stat; 62 break; 63 } 64 } 65 } 66 } 67 } 68 return pmc_enable; 69 } 70 71 void 72 nvkm_mc_reset(struct nvkm_device *device, enum nvkm_subdev_type type, int inst) 73 { 74 u64 pmc_enable = nvkm_mc_reset_mask(device, true, type, inst); 75 if (pmc_enable) { 76 device->mc->func->device->disable(device->mc, pmc_enable); 77 device->mc->func->device->enable(device->mc, pmc_enable); 78 } 79 } 80 81 void 82 nvkm_mc_disable(struct nvkm_device *device, enum nvkm_subdev_type type, int inst) 83 { 84 u64 pmc_enable = nvkm_mc_reset_mask(device, false, type, inst); 85 if (pmc_enable) 86 device->mc->func->device->disable(device->mc, pmc_enable); 87 } 88 89 void 90 nvkm_mc_enable(struct nvkm_device *device, enum nvkm_subdev_type type, int inst) 91 { 92 u64 pmc_enable = nvkm_mc_reset_mask(device, false, type, inst); 93 if (pmc_enable) 94 device->mc->func->device->enable(device->mc, pmc_enable); 95 } 96 97 bool 98 nvkm_mc_enabled(struct nvkm_device *device, enum nvkm_subdev_type type, int inst) 99 { 100 u64 pmc_enable = nvkm_mc_reset_mask(device, false, type, inst); 101 102 return (pmc_enable != 0) && device->mc->func->device->enabled(device->mc, pmc_enable); 103 } 104 105 static int 106 nvkm_mc_init(struct nvkm_subdev *subdev) 107 { 108 struct nvkm_mc *mc = nvkm_mc(subdev); 109 if (mc->func->init) 110 mc->func->init(mc); 111 return 0; 112 } 113 114 static void * 115 nvkm_mc_dtor(struct nvkm_subdev *subdev) 116 { 117 return nvkm_mc(subdev); 118 } 119 120 static const struct nvkm_subdev_func 121 nvkm_mc = { 122 .dtor = nvkm_mc_dtor, 123 .init = nvkm_mc_init, 124 }; 125 126 int 127 nvkm_mc_new_(const struct nvkm_mc_func *func, struct nvkm_device *device, 128 enum nvkm_subdev_type type, int inst, struct nvkm_mc **pmc) 129 { 130 struct nvkm_mc *mc; 131 int ret; 132 133 if (!(mc = *pmc = kzalloc(sizeof(*mc), GFP_KERNEL))) 134 return -ENOMEM; 135 136 nvkm_subdev_ctor(&nvkm_mc, device, type, inst, &mc->subdev); 137 mc->func = func; 138 139 if (mc->func->intr) { 140 ret = nvkm_intr_add(mc->func->intr, mc->func->intrs, &mc->subdev, 141 mc->func->intr_nonstall ? 2 : 1, &mc->intr); 142 if (ret) 143 return ret; 144 } 145 146 return 0; 147 } 148