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 <subdev/ibus.h> 25 26static void 27gk104_ibus_intr_hub(struct nvkm_subdev *ibus, int i) 28{ 29 struct nvkm_device *device = ibus->device; 30 u32 addr = nvkm_rd32(device, 0x122120 + (i * 0x0800)); 31 u32 data = nvkm_rd32(device, 0x122124 + (i * 0x0800)); 32 u32 stat = nvkm_rd32(device, 0x122128 + (i * 0x0800)); 33 nvkm_error(ibus, "HUB%d: %06x %08x (%08x)\n", i, addr, data, stat); 34 nvkm_mask(device, 0x122128 + (i * 0x0800), 0x00000200, 0x00000000); 35} 36 37static void 38gk104_ibus_intr_rop(struct nvkm_subdev *ibus, int i) 39{ 40 struct nvkm_device *device = ibus->device; 41 u32 addr = nvkm_rd32(device, 0x124120 + (i * 0x0800)); 42 u32 data = nvkm_rd32(device, 0x124124 + (i * 0x0800)); 43 u32 stat = nvkm_rd32(device, 0x124128 + (i * 0x0800)); 44 nvkm_error(ibus, "ROP%d: %06x %08x (%08x)\n", i, addr, data, stat); 45 nvkm_mask(device, 0x124128 + (i * 0x0800), 0x00000200, 0x00000000); 46} 47 48static void 49gk104_ibus_intr_gpc(struct nvkm_subdev *ibus, int i) 50{ 51 struct nvkm_device *device = ibus->device; 52 u32 addr = nvkm_rd32(device, 0x128120 + (i * 0x0800)); 53 u32 data = nvkm_rd32(device, 0x128124 + (i * 0x0800)); 54 u32 stat = nvkm_rd32(device, 0x128128 + (i * 0x0800)); 55 nvkm_error(ibus, "GPC%d: %06x %08x (%08x)\n", i, addr, data, stat); 56 nvkm_mask(device, 0x128128 + (i * 0x0800), 0x00000200, 0x00000000); 57} 58 59static void 60gk104_ibus_intr(struct nvkm_subdev *ibus) 61{ 62 struct nvkm_device *device = ibus->device; 63 u32 intr0 = nvkm_rd32(device, 0x120058); 64 u32 intr1 = nvkm_rd32(device, 0x12005c); 65 u32 hubnr = nvkm_rd32(device, 0x120070); 66 u32 ropnr = nvkm_rd32(device, 0x120074); 67 u32 gpcnr = nvkm_rd32(device, 0x120078); 68 u32 i; 69 70 for (i = 0; (intr0 & 0x0000ff00) && i < hubnr; i++) { 71 u32 stat = 0x00000100 << i; 72 if (intr0 & stat) { 73 gk104_ibus_intr_hub(ibus, i); 74 intr0 &= ~stat; 75 } 76 } 77 78 for (i = 0; (intr0 & 0xffff0000) && i < ropnr; i++) { 79 u32 stat = 0x00010000 << i; 80 if (intr0 & stat) { 81 gk104_ibus_intr_rop(ibus, i); 82 intr0 &= ~stat; 83 } 84 } 85 86 for (i = 0; intr1 && i < gpcnr; i++) { 87 u32 stat = 0x00000001 << i; 88 if (intr1 & stat) { 89 gk104_ibus_intr_gpc(ibus, i); 90 intr1 &= ~stat; 91 } 92 } 93} 94 95static int 96gk104_ibus_init(struct nvkm_subdev *ibus) 97{ 98 struct nvkm_device *device = ibus->device; 99 nvkm_mask(device, 0x122318, 0x0003ffff, 0x00001000); 100 nvkm_mask(device, 0x12231c, 0x0003ffff, 0x00000200); 101 nvkm_mask(device, 0x122310, 0x0003ffff, 0x00000800); 102 nvkm_mask(device, 0x122348, 0x0003ffff, 0x00000100); 103 nvkm_mask(device, 0x1223b0, 0x0003ffff, 0x00000fff); 104 nvkm_mask(device, 0x122348, 0x0003ffff, 0x00000200); 105 nvkm_mask(device, 0x122358, 0x0003ffff, 0x00002880); 106 return 0; 107} 108 109static const struct nvkm_subdev_func 110gk104_ibus = { 111 .preinit = gk104_ibus_init, 112 .init = gk104_ibus_init, 113 .intr = gk104_ibus_intr, 114}; 115 116int 117gk104_ibus_new(struct nvkm_device *device, int index, 118 struct nvkm_subdev **pibus) 119{ 120 struct nvkm_subdev *ibus; 121 if (!(ibus = *pibus = kzalloc(sizeof(*ibus), GFP_KERNEL))) 122 return -ENOMEM; 123 nvkm_subdev_ctor(&gk104_ibus, device, index, 0, ibus); 124 return 0; 125} 126