1 // SPDX-License-Identifier: MIT
2 #include <drm/drm_crtc.h>
3 
4 #include "crc.h"
5 #include "core.h"
6 #include "disp.h"
7 #include "head.h"
8 
9 #include <nvif/push507c.h>
10 
11 #include <nvhw/class/cl907d.h>
12 
13 #define CRC907D_MAX_ENTRIES 255
14 
15 struct crc907d_notifier {
16 	u32 status;
17 	u32 :32; /* reserved */
18 	struct crc907d_entry {
19 		u32 status;
20 		u32 compositor_crc;
21 		u32 output_crc[2];
22 	} entries[CRC907D_MAX_ENTRIES];
23 } __packed;
24 
25 static int
26 crc907d_set_src(struct nv50_head *head, int or,
27 		enum nv50_crc_source_type source,
28 		struct nv50_crc_notifier_ctx *ctx, u32 wndw)
29 {
30 	struct nvif_push *push = nv50_disp(head->base.base.dev)->core->chan.push;
31 	const int i = head->base.index;
32 	u32 crc_args = NVDEF(NV907D, HEAD_SET_CRC_CONTROL, CONTROLLING_CHANNEL, CORE) |
33 		       NVDEF(NV907D, HEAD_SET_CRC_CONTROL, EXPECT_BUFFER_COLLAPSE, FALSE) |
34 		       NVDEF(NV907D, HEAD_SET_CRC_CONTROL, TIMESTAMP_MODE, FALSE) |
35 		       NVDEF(NV907D, HEAD_SET_CRC_CONTROL, SECONDARY_OUTPUT, NONE) |
36 		       NVDEF(NV907D, HEAD_SET_CRC_CONTROL, CRC_DURING_SNOOZE, DISABLE);
37 	int ret;
38 
39 	switch (source) {
40 	case NV50_CRC_SOURCE_TYPE_SOR:
41 		crc_args |= NVDEF(NV907D, HEAD_SET_CRC_CONTROL, PRIMARY_OUTPUT, SOR(or));
42 		break;
43 	case NV50_CRC_SOURCE_TYPE_PIOR:
44 		crc_args |= NVDEF(NV907D, HEAD_SET_CRC_CONTROL, PRIMARY_OUTPUT, PIOR(or));
45 		break;
46 	case NV50_CRC_SOURCE_TYPE_DAC:
47 		crc_args |= NVDEF(NV907D, HEAD_SET_CRC_CONTROL, PRIMARY_OUTPUT, DAC(or));
48 		break;
49 	case NV50_CRC_SOURCE_TYPE_RG:
50 		crc_args |= NVDEF(NV907D, HEAD_SET_CRC_CONTROL, PRIMARY_OUTPUT, RG(i));
51 		break;
52 	case NV50_CRC_SOURCE_TYPE_SF:
53 		crc_args |= NVDEF(NV907D, HEAD_SET_CRC_CONTROL, PRIMARY_OUTPUT, SF(i));
54 		break;
55 	case NV50_CRC_SOURCE_NONE:
56 		crc_args |= NVDEF(NV907D, HEAD_SET_CRC_CONTROL, PRIMARY_OUTPUT, NONE);
57 		break;
58 	}
59 
60 	if ((ret = PUSH_WAIT(push, 4)))
61 		return ret;
62 
63 	if (source) {
64 		PUSH_MTHD(push, NV907D, HEAD_SET_CONTEXT_DMA_CRC(i), ctx->ntfy.handle);
65 		PUSH_MTHD(push, NV907D, HEAD_SET_CRC_CONTROL(i), crc_args);
66 	} else {
67 		PUSH_MTHD(push, NV907D, HEAD_SET_CRC_CONTROL(i), crc_args);
68 		PUSH_MTHD(push, NV907D, HEAD_SET_CONTEXT_DMA_CRC(i), 0);
69 	}
70 
71 	return 0;
72 }
73 
74 static int
75 crc907d_set_ctx(struct nv50_head *head, struct nv50_crc_notifier_ctx *ctx)
76 {
77 	struct nvif_push *push = nv50_disp(head->base.base.dev)->core->chan.push;
78 	const int i = head->base.index;
79 	int ret;
80 
81 	if ((ret = PUSH_WAIT(push, 2)))
82 		return ret;
83 
84 	PUSH_MTHD(push, NV907D, HEAD_SET_CONTEXT_DMA_CRC(i), ctx ? ctx->ntfy.handle : 0);
85 	return 0;
86 }
87 
88 static u32 crc907d_get_entry(struct nv50_head *head,
89 			     struct nv50_crc_notifier_ctx *ctx,
90 			     enum nv50_crc_source source, int idx)
91 {
92 	struct crc907d_notifier __iomem *notifier = ctx->mem.object.map.ptr;
93 
94 	return ioread32_native(&notifier->entries[idx].output_crc[0]);
95 }
96 
97 static bool crc907d_ctx_finished(struct nv50_head *head,
98 				 struct nv50_crc_notifier_ctx *ctx)
99 {
100 	struct nouveau_drm *drm = nouveau_drm(head->base.base.dev);
101 	struct crc907d_notifier __iomem *notifier = ctx->mem.object.map.ptr;
102 	const u32 status = ioread32_native(&notifier->status);
103 	const u32 overflow = status & 0x0000003e;
104 
105 	if (!(status & 0x00000001))
106 		return false;
107 
108 	if (overflow) {
109 		const char *engine = NULL;
110 
111 		switch (overflow) {
112 		case 0x00000004: engine = "DSI"; break;
113 		case 0x00000008: engine = "Compositor"; break;
114 		case 0x00000010: engine = "CRC output 1"; break;
115 		case 0x00000020: engine = "CRC output 2"; break;
116 		}
117 
118 		if (engine)
119 			NV_ERROR(drm,
120 				 "CRC notifier context for head %d overflowed on %s: %x\n",
121 				 head->base.index, engine, status);
122 		else
123 			NV_ERROR(drm,
124 				 "CRC notifier context for head %d overflowed: %x\n",
125 				 head->base.index, status);
126 	}
127 
128 	NV_DEBUG(drm, "Head %d CRC context status: %x\n",
129 		 head->base.index, status);
130 
131 	return true;
132 }
133 
134 const struct nv50_crc_func crc907d = {
135 	.set_src = crc907d_set_src,
136 	.set_ctx = crc907d_set_ctx,
137 	.get_entry = crc907d_get_entry,
138 	.ctx_finished = crc907d_ctx_finished,
139 	.flip_threshold = CRC907D_MAX_ENTRIES - 10,
140 	.num_entries = CRC907D_MAX_ENTRIES,
141 	.notifier_len = sizeof(struct crc907d_notifier),
142 };
143