1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * Copyright (C) 2010 Google, Inc.
4  * Author: Erik Gilling <konkers@android.com>
5  *
6  * Copyright (C) 2011-2017 NVIDIA Corporation
7  */
8 
9 #include "../dev.h"
10 #include "../debug.h"
11 #include "../cdma.h"
12 #include "../channel.h"
13 
14 static void host1x_debug_show_channel_cdma(struct host1x *host,
15 					   struct host1x_channel *ch,
16 					   struct output *o)
17 {
18 	struct host1x_cdma *cdma = &ch->cdma;
19 	u32 dmaput, dmaget, dmactrl;
20 	u32 offset, class;
21 	u32 ch_stat;
22 
23 	dmaput = host1x_ch_readl(ch, HOST1X_CHANNEL_DMAPUT);
24 	dmaget = host1x_ch_readl(ch, HOST1X_CHANNEL_DMAGET);
25 	dmactrl = host1x_ch_readl(ch, HOST1X_CHANNEL_DMACTRL);
26 	offset = host1x_ch_readl(ch, HOST1X_CHANNEL_CMDP_OFFSET);
27 	class = host1x_ch_readl(ch, HOST1X_CHANNEL_CMDP_CLASS);
28 	ch_stat = host1x_ch_readl(ch, HOST1X_CHANNEL_CHANNELSTAT);
29 
30 	host1x_debug_output(o, "%u-%s: ", ch->id, dev_name(ch->dev));
31 
32 	if (dmactrl & HOST1X_CHANNEL_DMACTRL_DMASTOP ||
33 	    !ch->cdma.push_buffer.mapped) {
34 		host1x_debug_output(o, "inactive\n\n");
35 		return;
36 	}
37 
38 	if (class == HOST1X_CLASS_HOST1X && offset == HOST1X_UCLASS_WAIT_SYNCPT)
39 		host1x_debug_output(o, "waiting on syncpt\n");
40 	else
41 		host1x_debug_output(o, "active class %02x, offset %04x\n",
42 				    class, offset);
43 
44 	host1x_debug_output(o, "DMAPUT %08x, DMAGET %08x, DMACTL %08x\n",
45 			    dmaput, dmaget, dmactrl);
46 	host1x_debug_output(o, "CHANNELSTAT %02x\n", ch_stat);
47 
48 	show_channel_gathers(o, cdma);
49 	host1x_debug_output(o, "\n");
50 }
51 
52 static void host1x_debug_show_channel_fifo(struct host1x *host,
53 					   struct host1x_channel *ch,
54 					   struct output *o)
55 {
56 #if HOST1X_HW <= 6
57 	u32 rd_ptr, wr_ptr, start, end;
58 	u32 payload = INVALID_PAYLOAD;
59 	unsigned int data_count = 0;
60 #endif
61 	u32 val;
62 
63 	host1x_debug_output(o, "%u: fifo:\n", ch->id);
64 
65 	val = host1x_ch_readl(ch, HOST1X_CHANNEL_CMDFIFO_STAT);
66 	host1x_debug_output(o, "CMDFIFO_STAT %08x\n", val);
67 	if (val & HOST1X_CHANNEL_CMDFIFO_STAT_EMPTY) {
68 		host1x_debug_output(o, "[empty]\n");
69 		return;
70 	}
71 
72 	val = host1x_ch_readl(ch, HOST1X_CHANNEL_CMDFIFO_RDATA);
73 	host1x_debug_output(o, "CMDFIFO_RDATA %08x\n", val);
74 
75 #if HOST1X_HW <= 6
76 	/* Peek pointer values are invalid during SLCG, so disable it */
77 	host1x_hypervisor_writel(host, 0x1, HOST1X_HV_ICG_EN_OVERRIDE);
78 
79 	val = 0;
80 	val |= HOST1X_HV_CMDFIFO_PEEK_CTRL_ENABLE;
81 	val |= HOST1X_HV_CMDFIFO_PEEK_CTRL_CHANNEL(ch->id);
82 	host1x_hypervisor_writel(host, val, HOST1X_HV_CMDFIFO_PEEK_CTRL);
83 
84 	val = host1x_hypervisor_readl(host, HOST1X_HV_CMDFIFO_PEEK_PTRS);
85 	rd_ptr = HOST1X_HV_CMDFIFO_PEEK_PTRS_RD_PTR_V(val);
86 	wr_ptr = HOST1X_HV_CMDFIFO_PEEK_PTRS_WR_PTR_V(val);
87 
88 	val = host1x_hypervisor_readl(host, HOST1X_HV_CMDFIFO_SETUP(ch->id));
89 	start = HOST1X_HV_CMDFIFO_SETUP_BASE_V(val);
90 	end = HOST1X_HV_CMDFIFO_SETUP_LIMIT_V(val);
91 
92 	do {
93 		val = 0;
94 		val |= HOST1X_HV_CMDFIFO_PEEK_CTRL_ENABLE;
95 		val |= HOST1X_HV_CMDFIFO_PEEK_CTRL_CHANNEL(ch->id);
96 		val |= HOST1X_HV_CMDFIFO_PEEK_CTRL_ADDR(rd_ptr);
97 		host1x_hypervisor_writel(host, val,
98 					 HOST1X_HV_CMDFIFO_PEEK_CTRL);
99 
100 		val = host1x_hypervisor_readl(host,
101 					      HOST1X_HV_CMDFIFO_PEEK_READ);
102 
103 		if (!data_count) {
104 			host1x_debug_output(o, "%03x 0x%08x: ",
105 					    rd_ptr - start, val);
106 			data_count = show_channel_command(o, val, &payload);
107 		} else {
108 			host1x_debug_cont(o, "%08x%s", val,
109 					  data_count > 1 ? ", " : "])\n");
110 			data_count--;
111 		}
112 
113 		if (rd_ptr == end)
114 			rd_ptr = start;
115 		else
116 			rd_ptr++;
117 	} while (rd_ptr != wr_ptr);
118 
119 	if (data_count)
120 		host1x_debug_cont(o, ", ...])\n");
121 	host1x_debug_output(o, "\n");
122 
123 	host1x_hypervisor_writel(host, 0x0, HOST1X_HV_CMDFIFO_PEEK_CTRL);
124 	host1x_hypervisor_writel(host, 0x0, HOST1X_HV_ICG_EN_OVERRIDE);
125 #endif
126 }
127 
128 static void host1x_debug_show_mlocks(struct host1x *host, struct output *o)
129 {
130 	/* TODO */
131 }
132