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 #define gp100_mc(p) container_of((p), struct gp100_mc, base)
25 #include "priv.h"
26
27 struct gp100_mc {
28 struct nvkm_mc base;
29 spinlock_t lock;
30 bool intr;
31 u32 mask;
32 };
33
34 static void
gp100_mc_intr_update(struct gp100_mc * mc)35 gp100_mc_intr_update(struct gp100_mc *mc)
36 {
37 struct nvkm_device *device = mc->base.subdev.device;
38 u32 mask = mc->intr ? mc->mask : 0, i;
39 for (i = 0; i < 2; i++) {
40 nvkm_wr32(device, 0x000180 + (i * 0x04), ~mask);
41 nvkm_wr32(device, 0x000160 + (i * 0x04), mask);
42 }
43 }
44
45 void
gp100_mc_intr_unarm(struct nvkm_mc * base)46 gp100_mc_intr_unarm(struct nvkm_mc *base)
47 {
48 struct gp100_mc *mc = gp100_mc(base);
49 unsigned long flags;
50 spin_lock_irqsave(&mc->lock, flags);
51 mc->intr = false;
52 gp100_mc_intr_update(mc);
53 spin_unlock_irqrestore(&mc->lock, flags);
54 }
55
56 void
gp100_mc_intr_rearm(struct nvkm_mc * base)57 gp100_mc_intr_rearm(struct nvkm_mc *base)
58 {
59 struct gp100_mc *mc = gp100_mc(base);
60 unsigned long flags;
61 spin_lock_irqsave(&mc->lock, flags);
62 mc->intr = true;
63 gp100_mc_intr_update(mc);
64 spin_unlock_irqrestore(&mc->lock, flags);
65 }
66
67 void
gp100_mc_intr_mask(struct nvkm_mc * base,u32 mask,u32 intr)68 gp100_mc_intr_mask(struct nvkm_mc *base, u32 mask, u32 intr)
69 {
70 struct gp100_mc *mc = gp100_mc(base);
71 unsigned long flags;
72 spin_lock_irqsave(&mc->lock, flags);
73 mc->mask = (mc->mask & ~mask) | intr;
74 gp100_mc_intr_update(mc);
75 spin_unlock_irqrestore(&mc->lock, flags);
76 }
77
78 const struct nvkm_mc_map
79 gp100_mc_intr[] = {
80 { 0x04000000, NVKM_ENGINE_DISP },
81 { 0x00000100, NVKM_ENGINE_FIFO },
82 { 0x00000200, NVKM_SUBDEV_FAULT },
83 { 0x40000000, NVKM_SUBDEV_PRIVRING },
84 { 0x10000000, NVKM_SUBDEV_BUS },
85 { 0x08000000, NVKM_SUBDEV_FB },
86 { 0x02000000, NVKM_SUBDEV_LTC },
87 { 0x01000000, NVKM_SUBDEV_PMU },
88 { 0x00200000, NVKM_SUBDEV_GPIO },
89 { 0x00200000, NVKM_SUBDEV_I2C },
90 { 0x00100000, NVKM_SUBDEV_TIMER },
91 { 0x00040000, NVKM_SUBDEV_THERM },
92 { 0x00002000, NVKM_SUBDEV_FB },
93 {},
94 };
95
96 static const struct nvkm_mc_func
97 gp100_mc = {
98 .init = nv50_mc_init,
99 .intr = gp100_mc_intr,
100 .intr_unarm = gp100_mc_intr_unarm,
101 .intr_rearm = gp100_mc_intr_rearm,
102 .intr_mask = gp100_mc_intr_mask,
103 .intr_stat = gf100_mc_intr_stat,
104 .reset = gk104_mc_reset,
105 };
106
107 int
gp100_mc_new_(const struct nvkm_mc_func * func,struct nvkm_device * device,enum nvkm_subdev_type type,int inst,struct nvkm_mc ** pmc)108 gp100_mc_new_(const struct nvkm_mc_func *func, struct nvkm_device *device,
109 enum nvkm_subdev_type type, int inst, struct nvkm_mc **pmc)
110 {
111 struct gp100_mc *mc;
112
113 if (!(mc = kzalloc(sizeof(*mc), GFP_KERNEL)))
114 return -ENOMEM;
115 nvkm_mc_ctor(func, device, type, inst, &mc->base);
116 *pmc = &mc->base;
117
118 spin_lock_init(&mc->lock);
119 mc->intr = false;
120 mc->mask = 0x7fffffff;
121 return 0;
122 }
123
124 int
gp100_mc_new(struct nvkm_device * device,enum nvkm_subdev_type type,int inst,struct nvkm_mc ** pmc)125 gp100_mc_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, struct nvkm_mc **pmc)
126 {
127 return gp100_mc_new_(&gp100_mc, device, type, inst, pmc);
128 }
129