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 "core.h"
23 #include "head.h"
24 
25 #include <nvif/cl507d.h>
26 #include <nvif/push507c.h>
27 #include <nvif/timer.h>
28 
29 #include <nvhw/class/cl507d.h>
30 
31 #include "nouveau_bo.h"
32 
33 int
34 core507d_update(struct nv50_core *core, u32 *interlock, bool ntfy)
35 {
36 	struct nvif_push *push = core->chan.push;
37 	int ret;
38 
39 	if ((ret = PUSH_WAIT(push, (ntfy ? 2 : 0) + 3)))
40 		return ret;
41 
42 	if (ntfy) {
43 		PUSH_MTHD(push, NV507D, SET_NOTIFIER_CONTROL,
44 			  NVDEF(NV507D, SET_NOTIFIER_CONTROL, MODE, WRITE) |
45 			  NVVAL(NV507D, SET_NOTIFIER_CONTROL, OFFSET, NV50_DISP_CORE_NTFY >> 2) |
46 			  NVDEF(NV507D, SET_NOTIFIER_CONTROL, NOTIFY, ENABLE));
47 	}
48 
49 	PUSH_MTHD(push, NV507D, UPDATE, interlock[NV50_DISP_INTERLOCK_BASE] |
50 					interlock[NV50_DISP_INTERLOCK_OVLY] |
51 		  NVDEF(NV507D, UPDATE, NOT_DRIVER_FRIENDLY, FALSE) |
52 		  NVDEF(NV507D, UPDATE, NOT_DRIVER_UNFRIENDLY, FALSE) |
53 		  NVDEF(NV507D, UPDATE, INHIBIT_INTERRUPTS, FALSE),
54 
55 				SET_NOTIFIER_CONTROL,
56 		  NVDEF(NV507D, SET_NOTIFIER_CONTROL, NOTIFY, DISABLE));
57 
58 	return PUSH_KICK(push);
59 }
60 
61 int
62 core507d_ntfy_wait_done(struct nouveau_bo *bo, u32 offset,
63 			struct nvif_device *device)
64 {
65 	s64 time = nvif_msec(device, 2000ULL,
66 		if (NVBO_TD32(bo, offset, NV_DISP_CORE_NOTIFIER_1, COMPLETION_0, DONE, ==, TRUE))
67 			break;
68 		usleep_range(1, 2);
69 	);
70 	return time < 0 ? time : 0;
71 }
72 
73 void
74 core507d_ntfy_init(struct nouveau_bo *bo, u32 offset)
75 {
76 	NVBO_WR32(bo, offset, NV_DISP_CORE_NOTIFIER_1, COMPLETION_0,
77 			NVDEF(NV_DISP_CORE_NOTIFIER_1, COMPLETION_0, DONE, FALSE));
78 }
79 
80 int
81 core507d_read_caps(struct nv50_disp *disp)
82 {
83 	struct nvif_push *push = disp->core->chan.push;
84 	int ret;
85 
86 	ret = PUSH_WAIT(push, 6);
87 	if (ret)
88 		return ret;
89 
90 	PUSH_MTHD(push, NV507D, SET_NOTIFIER_CONTROL,
91 		  NVDEF(NV507D, SET_NOTIFIER_CONTROL, MODE, WRITE) |
92 		  NVVAL(NV507D, SET_NOTIFIER_CONTROL, OFFSET, NV50_DISP_CORE_NTFY >> 2) |
93 		  NVDEF(NV507D, SET_NOTIFIER_CONTROL, NOTIFY, ENABLE));
94 
95 	PUSH_MTHD(push, NV507D, GET_CAPABILITIES, 0x00000000);
96 
97 	PUSH_MTHD(push, NV507D, SET_NOTIFIER_CONTROL,
98 		  NVDEF(NV507D, SET_NOTIFIER_CONTROL, NOTIFY, DISABLE));
99 
100 	return PUSH_KICK(push);
101 }
102 
103 int
104 core507d_caps_init(struct nouveau_drm *drm, struct nv50_disp *disp)
105 {
106 	struct nv50_core *core = disp->core;
107 	struct nouveau_bo *bo = disp->sync;
108 	s64 time;
109 	int ret;
110 
111 	NVBO_WR32(bo, NV50_DISP_CORE_NTFY, NV_DISP_CORE_NOTIFIER_1, CAPABILITIES_1,
112 				     NVDEF(NV_DISP_CORE_NOTIFIER_1, CAPABILITIES_1, DONE, FALSE));
113 
114 	ret = core507d_read_caps(disp);
115 	if (ret < 0)
116 		return ret;
117 
118 	time = nvif_msec(core->chan.base.device, 2000ULL,
119 			 if (NVBO_TD32(bo, NV50_DISP_CORE_NTFY,
120 				       NV_DISP_CORE_NOTIFIER_1, CAPABILITIES_1, DONE, ==, TRUE))
121 				 break;
122 			 usleep_range(1, 2);
123 			 );
124 	if (time < 0)
125 		NV_ERROR(drm, "core caps notifier timeout\n");
126 
127 	return 0;
128 }
129 
130 int
131 core507d_init(struct nv50_core *core)
132 {
133 	struct nvif_push *push = core->chan.push;
134 	int ret;
135 
136 	if ((ret = PUSH_WAIT(push, 2)))
137 		return ret;
138 
139 	PUSH_MTHD(push, NV507D, SET_CONTEXT_DMA_NOTIFIER, core->chan.sync.handle);
140 	return PUSH_KICK(push);
141 }
142 
143 static const struct nv50_core_func
144 core507d = {
145 	.init = core507d_init,
146 	.ntfy_init = core507d_ntfy_init,
147 	.caps_init = core507d_caps_init,
148 	.ntfy_wait_done = core507d_ntfy_wait_done,
149 	.update = core507d_update,
150 	.head = &head507d,
151 	.dac = &dac507d,
152 	.sor = &sor507d,
153 	.pior = &pior507d,
154 };
155 
156 int
157 core507d_new_(const struct nv50_core_func *func, struct nouveau_drm *drm,
158 	      s32 oclass, struct nv50_core **pcore)
159 {
160 	struct nv50_disp_core_channel_dma_v0 args = {};
161 	struct nv50_disp *disp = nv50_disp(drm->dev);
162 	struct nv50_core *core;
163 	int ret;
164 
165 	if (!(core = *pcore = kzalloc(sizeof(*core), GFP_KERNEL)))
166 		return -ENOMEM;
167 	core->func = func;
168 
169 	ret = nv50_dmac_create(&drm->client.device, &disp->disp->object,
170 			       &oclass, 0, &args, sizeof(args),
171 			       disp->sync->offset, &core->chan);
172 	if (ret) {
173 		NV_ERROR(drm, "core%04x allocation failed: %d\n", oclass, ret);
174 		return ret;
175 	}
176 
177 	return 0;
178 }
179 
180 int
181 core507d_new(struct nouveau_drm *drm, s32 oclass, struct nv50_core **pcore)
182 {
183 	return core507d_new_(&core507d, drm, oclass, pcore);
184 }
185