1 /*
2  * Copyright 2018 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 #include "gf100.h"
23 
24 #include <core/memory.h>
25 #include <subdev/timer.h>
26 
27 static void
28 tu102_bar_bar2_wait(struct nvkm_bar *bar)
29 {
30 	struct nvkm_device *device = bar->subdev.device;
31 	nvkm_msec(device, 2000,
32 		if (!(nvkm_rd32(device, 0xb80f50) & 0x0000000c))
33 			break;
34 	);
35 }
36 
37 static void
38 tu102_bar_bar2_fini(struct nvkm_bar *bar)
39 {
40 	nvkm_mask(bar->subdev.device, 0xb80f48, 0x80000000, 0x00000000);
41 }
42 
43 static void
44 tu102_bar_bar2_init(struct nvkm_bar *base)
45 {
46 	struct nvkm_device *device = base->subdev.device;
47 	struct gf100_bar *bar = gf100_bar(base);
48 	u32 addr = nvkm_memory_addr(bar->bar[0].inst) >> 12;
49 	if (bar->bar2_halve)
50 		addr |= 0x40000000;
51 	nvkm_wr32(device, 0xb80f48, 0x80000000 | addr);
52 }
53 
54 static void
55 tu102_bar_bar1_wait(struct nvkm_bar *bar)
56 {
57 	struct nvkm_device *device = bar->subdev.device;
58 	nvkm_msec(device, 2000,
59 		if (!(nvkm_rd32(device, 0xb80f50) & 0x00000003))
60 			break;
61 	);
62 }
63 
64 static void
65 tu102_bar_bar1_fini(struct nvkm_bar *bar)
66 {
67 	nvkm_mask(bar->subdev.device, 0xb80f40, 0x80000000, 0x00000000);
68 }
69 
70 static void
71 tu102_bar_bar1_init(struct nvkm_bar *base)
72 {
73 	struct nvkm_device *device = base->subdev.device;
74 	struct gf100_bar *bar = gf100_bar(base);
75 	const u32 addr = nvkm_memory_addr(bar->bar[1].inst) >> 12;
76 	nvkm_wr32(device, 0xb80f40, 0x80000000 | addr);
77 }
78 
79 static const struct nvkm_bar_func
80 tu102_bar = {
81 	.dtor = gf100_bar_dtor,
82 	.oneinit = gf100_bar_oneinit,
83 	.bar1.init = tu102_bar_bar1_init,
84 	.bar1.fini = tu102_bar_bar1_fini,
85 	.bar1.wait = tu102_bar_bar1_wait,
86 	.bar1.vmm = gf100_bar_bar1_vmm,
87 	.bar2.init = tu102_bar_bar2_init,
88 	.bar2.fini = tu102_bar_bar2_fini,
89 	.bar2.wait = tu102_bar_bar2_wait,
90 	.bar2.vmm = gf100_bar_bar2_vmm,
91 	.flush = g84_bar_flush,
92 };
93 
94 int
95 tu102_bar_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
96 	      struct nvkm_bar **pbar)
97 {
98 	return gf100_bar_new_(&tu102_bar, device, type, inst, pbar);
99 }
100