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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 | ||
25 | #include <subdev/mc.h> | |
a27e5699 | 26 | #include <core/option.h> |
7d9115de | 27 | |
0fa9061a BS |
28 | static irqreturn_t |
29 | nouveau_mc_intr(int irq, void *arg) | |
7d9115de | 30 | { |
0fa9061a | 31 | struct nouveau_mc *pmc = arg; |
7d9115de BS |
32 | const struct nouveau_mc_intr *map = pmc->intr_map; |
33 | struct nouveau_subdev *unit; | |
e0cdd1e5 | 34 | u32 stat, intr; |
7d9115de | 35 | |
e0cdd1e5 | 36 | intr = stat = nv_rd32(pmc, 0x000100); |
5addcf0a DA |
37 | if (intr == 0xffffffff) |
38 | return IRQ_NONE; | |
7d9115de BS |
39 | while (stat && map->stat) { |
40 | if (stat & map->stat) { | |
0fa9061a | 41 | unit = nouveau_subdev(pmc, map->unit); |
7d9115de BS |
42 | if (unit && unit->intr) |
43 | unit->intr(unit); | |
e0cdd1e5 | 44 | intr &= ~map->stat; |
7d9115de BS |
45 | } |
46 | map++; | |
47 | } | |
48 | ||
a27e5699 | 49 | if (pmc->use_msi) |
cfc2f263 | 50 | nv_wr08(pmc, 0x088068, 0xff); |
a27e5699 | 51 | |
e0cdd1e5 | 52 | if (intr) { |
7d9115de BS |
53 | nv_error(pmc, "unknown intr 0x%08x\n", stat); |
54 | } | |
0fa9061a BS |
55 | |
56 | return stat ? IRQ_HANDLED : IRQ_NONE; | |
57 | } | |
58 | ||
59 | int | |
60 | _nouveau_mc_fini(struct nouveau_object *object, bool suspend) | |
61 | { | |
62 | struct nouveau_mc *pmc = (void *)object; | |
63 | nv_wr32(pmc, 0x000140, 0x00000000); | |
64 | return nouveau_subdev_fini(&pmc->base, suspend); | |
65 | } | |
66 | ||
67 | int | |
68 | _nouveau_mc_init(struct nouveau_object *object) | |
69 | { | |
70 | struct nouveau_mc *pmc = (void *)object; | |
71 | int ret = nouveau_subdev_init(&pmc->base); | |
72 | if (ret) | |
73 | return ret; | |
74 | nv_wr32(pmc, 0x000140, 0x00000001); | |
75 | return 0; | |
76 | } | |
77 | ||
78 | void | |
79 | _nouveau_mc_dtor(struct nouveau_object *object) | |
80 | { | |
81 | struct nouveau_device *device = nv_device(object); | |
82 | struct nouveau_mc *pmc = (void *)object; | |
83 | free_irq(device->pdev->irq, pmc); | |
a27e5699 LS |
84 | if (pmc->use_msi) |
85 | pci_disable_msi(device->pdev); | |
0fa9061a BS |
86 | nouveau_subdev_destroy(&pmc->base); |
87 | } | |
88 | ||
89 | int | |
90 | nouveau_mc_create_(struct nouveau_object *parent, struct nouveau_object *engine, | |
6ff8c76a BS |
91 | struct nouveau_oclass *oclass, |
92 | const struct nouveau_mc_intr *intr_map, | |
93 | int length, void **pobject) | |
0fa9061a BS |
94 | { |
95 | struct nouveau_device *device = nv_device(parent); | |
96 | struct nouveau_mc *pmc; | |
97 | int ret; | |
98 | ||
99 | ret = nouveau_subdev_create_(parent, engine, oclass, 0, "PMC", | |
100 | "master", length, pobject); | |
101 | pmc = *pobject; | |
102 | if (ret) | |
103 | return ret; | |
104 | ||
6ff8c76a BS |
105 | pmc->intr_map = intr_map; |
106 | ||
a27e5699 LS |
107 | switch (device->pdev->device & 0x0ff0) { |
108 | case 0x00f0: /* BR02? */ | |
109 | case 0x02e0: /* BR02? */ | |
110 | pmc->use_msi = false; | |
111 | break; | |
112 | default: | |
113 | pmc->use_msi = nouveau_boolopt(device->cfgopt, "NvMSI", true); | |
114 | if (pmc->use_msi) { | |
115 | pmc->use_msi = pci_enable_msi(device->pdev) == 0; | |
116 | if (pmc->use_msi) { | |
117 | nv_info(pmc, "MSI interrupts enabled\n"); | |
cfc2f263 | 118 | nv_wr08(pmc, 0x088068, 0xff); |
a27e5699 LS |
119 | } |
120 | } | |
121 | break; | |
122 | } | |
123 | ||
0fa9061a BS |
124 | ret = request_irq(device->pdev->irq, nouveau_mc_intr, |
125 | IRQF_SHARED, "nouveau", pmc); | |
126 | if (ret < 0) | |
127 | return ret; | |
128 | ||
129 | return 0; | |
7d9115de | 130 | } |