1 /*
2  * Copyright 2016 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 "priv.h"
25 
26 void
27 gp100_ltc_intr(struct nvkm_ltc *ltc)
28 {
29 	struct nvkm_device *device = ltc->subdev.device;
30 	u32 mask;
31 
32 	mask = nvkm_rd32(device, 0x0001c0);
33 	while (mask) {
34 		u32 s, c = __ffs(mask);
35 		for (s = 0; s < ltc->lts_nr; s++)
36 			gm107_ltc_intr_lts(ltc, c, s);
37 		mask &= ~(1 << c);
38 	}
39 }
40 
41 int
42 gp100_ltc_oneinit(struct nvkm_ltc *ltc)
43 {
44 	struct nvkm_device *device = ltc->subdev.device;
45 	ltc->ltc_nr = nvkm_rd32(device, 0x12006c);
46 	ltc->lts_nr = nvkm_rd32(device, 0x17e280) >> 28;
47 	/*XXX: tagram allocation - TBD */
48 	return 0;
49 }
50 
51 void
52 gp100_ltc_init(struct nvkm_ltc *ltc)
53 {
54 	/*XXX: PMU LS call to setup tagram address */
55 }
56 
57 static const struct nvkm_ltc_func
58 gp100_ltc = {
59 	.oneinit = gp100_ltc_oneinit,
60 	.init = gp100_ltc_init,
61 	.intr = gp100_ltc_intr,
62 	.cbc_clear = gm107_ltc_cbc_clear,
63 	.cbc_wait = gm107_ltc_cbc_wait,
64 	.zbc_color = 16,
65 	.zbc_depth = 16,
66 	.zbc_clear_color = gm107_ltc_zbc_clear_color,
67 	.zbc_clear_depth = gm107_ltc_zbc_clear_depth,
68 	.invalidate = gf100_ltc_invalidate,
69 	.flush = gf100_ltc_flush,
70 };
71 
72 int
73 gp100_ltc_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
74 	      struct nvkm_ltc **pltc)
75 {
76 	return nvkm_ltc_new_(&gp100_ltc, device, type, inst, pltc);
77 }
78