Ben Skeggs | 7d9115d | 2012-07-11 15:58:56 +1000 | [diff] [blame] | 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 | */ |
Ben Skeggs | 7d155da | 2014-06-12 22:15:21 +1000 | [diff] [blame] | 24 | #include "priv.h" |
Ben Skeggs | d7e5fcd | 2015-01-14 15:08:21 +1000 | [diff] [blame] | 25 | |
Lucas Stach | a27e569 | 2013-08-28 02:00:50 +0200 | [diff] [blame] | 26 | #include <core/option.h> |
Ben Skeggs | 7d9115d | 2012-07-11 15:58:56 +1000 | [diff] [blame] | 27 | |
Ben Skeggs | 54dcadd | 2015-08-20 14:54:21 +1000 | [diff] [blame] | 28 | void |
Ben Skeggs | 2ca0ddb | 2015-08-20 14:54:07 +1000 | [diff] [blame] | 29 | nvkm_mc_unk260(struct nvkm_mc *mc, u32 data) |
Ben Skeggs | 7d155da | 2014-06-12 22:15:21 +1000 | [diff] [blame] | 30 | { |
Ben Skeggs | 54dcadd | 2015-08-20 14:54:21 +1000 | [diff] [blame] | 31 | if (mc->func->unk260) |
| 32 | mc->func->unk260(mc, data); |
Ben Skeggs | 7d155da | 2014-06-12 22:15:21 +1000 | [diff] [blame] | 33 | } |
| 34 | |
Ben Skeggs | d4c4cc8 | 2015-08-20 14:54:22 +1000 | [diff] [blame] | 35 | void |
| 36 | nvkm_mc_intr_unarm(struct nvkm_mc *mc) |
| 37 | { |
| 38 | return mc->func->intr_unarm(mc); |
| 39 | } |
| 40 | |
| 41 | void |
| 42 | nvkm_mc_intr_rearm(struct nvkm_mc *mc) |
| 43 | { |
| 44 | return mc->func->intr_rearm(mc); |
| 45 | } |
| 46 | |
Ben Skeggs | 2b70082 | 2015-08-20 14:54:22 +1000 | [diff] [blame] | 47 | static u32 |
Ben Skeggs | 2ca0ddb | 2015-08-20 14:54:07 +1000 | [diff] [blame] | 48 | nvkm_mc_intr_mask(struct nvkm_mc *mc) |
Ben Skeggs | 0c08884 | 2013-11-05 09:09:30 +1000 | [diff] [blame] | 49 | { |
Ben Skeggs | d4c4cc8 | 2015-08-20 14:54:22 +1000 | [diff] [blame] | 50 | u32 intr = mc->func->intr_mask(mc); |
| 51 | if (WARN_ON_ONCE(intr == 0xffffffff)) |
| 52 | intr = 0; /* likely fallen off the bus */ |
Ben Skeggs | 0c08884 | 2013-11-05 09:09:30 +1000 | [diff] [blame] | 53 | return intr; |
| 54 | } |
| 55 | |
Ben Skeggs | 2b70082 | 2015-08-20 14:54:22 +1000 | [diff] [blame] | 56 | void |
| 57 | nvkm_mc_intr(struct nvkm_mc *mc, bool *handled) |
Ben Skeggs | 7d9115d | 2012-07-11 15:58:56 +1000 | [diff] [blame] | 58 | { |
Ben Skeggs | 2b70082 | 2015-08-20 14:54:22 +1000 | [diff] [blame] | 59 | struct nvkm_device *device = mc->subdev.device; |
| 60 | struct nvkm_subdev *subdev; |
Ben Skeggs | 87f313e | 2016-04-08 17:24:40 +1000 | [diff] [blame] | 61 | const struct nvkm_mc_map *map = mc->func->intr; |
Ben Skeggs | 2b70082 | 2015-08-20 14:54:22 +1000 | [diff] [blame] | 62 | u32 stat, intr; |
Ben Skeggs | 7d9115d | 2012-07-11 15:58:56 +1000 | [diff] [blame] | 63 | |
Ben Skeggs | 2b70082 | 2015-08-20 14:54:22 +1000 | [diff] [blame] | 64 | stat = intr = nvkm_mc_intr_mask(mc); |
| 65 | while (map->stat) { |
| 66 | if (intr & map->stat) { |
| 67 | subdev = nvkm_device_subdev(device, map->unit); |
| 68 | if (subdev) |
| 69 | nvkm_subdev_intr(subdev); |
| 70 | stat &= ~map->stat; |
Ben Skeggs | 7d9115d | 2012-07-11 15:58:56 +1000 | [diff] [blame] | 71 | } |
Ben Skeggs | 2b70082 | 2015-08-20 14:54:22 +1000 | [diff] [blame] | 72 | map++; |
Ben Skeggs | 7d9115d | 2012-07-11 15:58:56 +1000 | [diff] [blame] | 73 | } |
| 74 | |
Ben Skeggs | 2b70082 | 2015-08-20 14:54:22 +1000 | [diff] [blame] | 75 | if (stat) |
| 76 | nvkm_error(&mc->subdev, "intr %08x\n", stat); |
| 77 | *handled = intr != 0; |
Ben Skeggs | 0fa9061 | 2013-03-22 10:05:03 +1000 | [diff] [blame] | 78 | } |
| 79 | |
Ben Skeggs | 6defde5 | 2016-04-08 17:24:40 +1000 | [diff] [blame] | 80 | static void |
| 81 | nvkm_mc_reset_(struct nvkm_mc *mc, enum nvkm_devidx devidx) |
| 82 | { |
| 83 | struct nvkm_device *device = mc->subdev.device; |
Ben Skeggs | 70b01f07 | 2016-04-08 17:24:40 +1000 | [diff] [blame^] | 84 | const struct nvkm_mc_map *map; |
| 85 | u64 pmc_enable = 0; |
| 86 | |
| 87 | for (map = mc->func->reset; map && map->stat; map++) { |
| 88 | if (map->unit == devidx) { |
| 89 | pmc_enable = map->stat; |
| 90 | break; |
| 91 | } |
| 92 | } |
| 93 | |
| 94 | if (!pmc_enable) { |
| 95 | struct nvkm_subdev *subdev = nvkm_device_subdev(device, devidx); |
| 96 | pmc_enable = subdev->pmc_enable; |
| 97 | } |
| 98 | |
Ben Skeggs | 6defde5 | 2016-04-08 17:24:40 +1000 | [diff] [blame] | 99 | if (pmc_enable) { |
| 100 | nvkm_mask(device, 0x000200, pmc_enable, 0x00000000); |
| 101 | nvkm_mask(device, 0x000200, pmc_enable, pmc_enable); |
| 102 | nvkm_rd32(device, 0x000200); |
| 103 | } |
| 104 | } |
| 105 | |
| 106 | void |
| 107 | nvkm_mc_reset(struct nvkm_mc *mc, enum nvkm_devidx devidx) |
| 108 | { |
| 109 | if (likely(mc)) |
| 110 | nvkm_mc_reset_(mc, devidx); |
| 111 | } |
| 112 | |
Ben Skeggs | 54dcadd | 2015-08-20 14:54:21 +1000 | [diff] [blame] | 113 | static int |
| 114 | nvkm_mc_fini(struct nvkm_subdev *subdev, bool suspend) |
Ben Skeggs | 0fa9061 | 2013-03-22 10:05:03 +1000 | [diff] [blame] | 115 | { |
Ben Skeggs | d4c4cc8 | 2015-08-20 14:54:22 +1000 | [diff] [blame] | 116 | struct nvkm_mc *mc = nvkm_mc(subdev); |
| 117 | nvkm_mc_intr_unarm(mc); |
Ben Skeggs | 54dcadd | 2015-08-20 14:54:21 +1000 | [diff] [blame] | 118 | return 0; |
Ben Skeggs | 0fa9061 | 2013-03-22 10:05:03 +1000 | [diff] [blame] | 119 | } |
| 120 | |
Ben Skeggs | 54dcadd | 2015-08-20 14:54:21 +1000 | [diff] [blame] | 121 | static int |
Ben Skeggs | 54dcadd | 2015-08-20 14:54:21 +1000 | [diff] [blame] | 122 | nvkm_mc_init(struct nvkm_subdev *subdev) |
| 123 | { |
| 124 | struct nvkm_mc *mc = nvkm_mc(subdev); |
Ben Skeggs | 54dcadd | 2015-08-20 14:54:21 +1000 | [diff] [blame] | 125 | if (mc->func->init) |
| 126 | mc->func->init(mc); |
Ben Skeggs | d4c4cc8 | 2015-08-20 14:54:22 +1000 | [diff] [blame] | 127 | nvkm_mc_intr_rearm(mc); |
Ben Skeggs | 0fa9061 | 2013-03-22 10:05:03 +1000 | [diff] [blame] | 128 | return 0; |
| 129 | } |
| 130 | |
Ben Skeggs | 54dcadd | 2015-08-20 14:54:21 +1000 | [diff] [blame] | 131 | static void * |
| 132 | nvkm_mc_dtor(struct nvkm_subdev *subdev) |
Ben Skeggs | 0fa9061 | 2013-03-22 10:05:03 +1000 | [diff] [blame] | 133 | { |
Ben Skeggs | 2b70082 | 2015-08-20 14:54:22 +1000 | [diff] [blame] | 134 | return nvkm_mc(subdev); |
Ben Skeggs | 0fa9061 | 2013-03-22 10:05:03 +1000 | [diff] [blame] | 135 | } |
| 136 | |
Ben Skeggs | 54dcadd | 2015-08-20 14:54:21 +1000 | [diff] [blame] | 137 | static const struct nvkm_subdev_func |
| 138 | nvkm_mc = { |
| 139 | .dtor = nvkm_mc_dtor, |
Ben Skeggs | 54dcadd | 2015-08-20 14:54:21 +1000 | [diff] [blame] | 140 | .init = nvkm_mc_init, |
| 141 | .fini = nvkm_mc_fini, |
| 142 | }; |
| 143 | |
Ben Skeggs | 0fa9061 | 2013-03-22 10:05:03 +1000 | [diff] [blame] | 144 | int |
Ben Skeggs | 54dcadd | 2015-08-20 14:54:21 +1000 | [diff] [blame] | 145 | nvkm_mc_new_(const struct nvkm_mc_func *func, struct nvkm_device *device, |
| 146 | int index, struct nvkm_mc **pmc) |
Ben Skeggs | 0fa9061 | 2013-03-22 10:05:03 +1000 | [diff] [blame] | 147 | { |
Ben Skeggs | 2ca0ddb | 2015-08-20 14:54:07 +1000 | [diff] [blame] | 148 | struct nvkm_mc *mc; |
Ben Skeggs | 0fa9061 | 2013-03-22 10:05:03 +1000 | [diff] [blame] | 149 | |
Ben Skeggs | 54dcadd | 2015-08-20 14:54:21 +1000 | [diff] [blame] | 150 | if (!(mc = *pmc = kzalloc(sizeof(*mc), GFP_KERNEL))) |
| 151 | return -ENOMEM; |
Ben Skeggs | 0fa9061 | 2013-03-22 10:05:03 +1000 | [diff] [blame] | 152 | |
Ben Skeggs | 54dcadd | 2015-08-20 14:54:21 +1000 | [diff] [blame] | 153 | nvkm_subdev_ctor(&nvkm_mc, device, index, 0, &mc->subdev); |
| 154 | mc->func = func; |
Ben Skeggs | 0fa9061 | 2013-03-22 10:05:03 +1000 | [diff] [blame] | 155 | return 0; |
Ben Skeggs | 7d9115d | 2012-07-11 15:58:56 +1000 | [diff] [blame] | 156 | } |