tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * Copyright (C) 2010 Google, Inc.
3 * Author: Erik Gilling <konkers@android.com>
4 *
5 * Copyright (C) 2011-2017 NVIDIA Corporation
6 *
7 * This software is licensed under the terms of the GNU General Public
8 * License version 2, as published by the Free Software Foundation, and
9 * may be copied, distributed, and modified under those terms.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 */
17
18#include "../dev.h"
19#include "../debug.h"
20#include "../cdma.h"
21#include "../channel.h"
22
23static void host1x_debug_show_channel_cdma(struct host1x *host,
24 struct host1x_channel *ch,
25 struct output *o)
26{
27 struct host1x_cdma *cdma = &ch->cdma;
28 u32 dmaput, dmaget, dmactrl;
29 u32 offset, class;
30 u32 ch_stat;
31
32 dmaput = host1x_ch_readl(ch, HOST1X_CHANNEL_DMAPUT);
33 dmaget = host1x_ch_readl(ch, HOST1X_CHANNEL_DMAGET);
34 dmactrl = host1x_ch_readl(ch, HOST1X_CHANNEL_DMACTRL);
35 offset = host1x_ch_readl(ch, HOST1X_CHANNEL_CMDP_OFFSET);
36 class = host1x_ch_readl(ch, HOST1X_CHANNEL_CMDP_CLASS);
37 ch_stat = host1x_ch_readl(ch, HOST1X_CHANNEL_CHANNELSTAT);
38
39 host1x_debug_output(o, "%u-%s: ", ch->id, dev_name(ch->dev));
40
41 if (dmactrl & HOST1X_CHANNEL_DMACTRL_DMASTOP ||
42 !ch->cdma.push_buffer.mapped) {
43 host1x_debug_output(o, "inactive\n\n");
44 return;
45 }
46
47 if (class == HOST1X_CLASS_HOST1X && offset == HOST1X_UCLASS_WAIT_SYNCPT)
48 host1x_debug_output(o, "waiting on syncpt\n");
49 else
50 host1x_debug_output(o, "active class %02x, offset %04x\n",
51 class, offset);
52
53 host1x_debug_output(o, "DMAPUT %08x, DMAGET %08x, DMACTL %08x\n",
54 dmaput, dmaget, dmactrl);
55 host1x_debug_output(o, "CHANNELSTAT %02x\n", ch_stat);
56
57 show_channel_gathers(o, cdma);
58 host1x_debug_output(o, "\n");
59}
60
61static void host1x_debug_show_channel_fifo(struct host1x *host,
62 struct host1x_channel *ch,
63 struct output *o)
64{
65#if HOST1X_HW <= 6
66 u32 rd_ptr, wr_ptr, start, end;
67 u32 payload = INVALID_PAYLOAD;
68 unsigned int data_count = 0;
69#endif
70 u32 val;
71
72 host1x_debug_output(o, "%u: fifo:\n", ch->id);
73
74 val = host1x_ch_readl(ch, HOST1X_CHANNEL_CMDFIFO_STAT);
75 host1x_debug_output(o, "CMDFIFO_STAT %08x\n", val);
76 if (val & HOST1X_CHANNEL_CMDFIFO_STAT_EMPTY) {
77 host1x_debug_output(o, "[empty]\n");
78 return;
79 }
80
81 val = host1x_ch_readl(ch, HOST1X_CHANNEL_CMDFIFO_RDATA);
82 host1x_debug_output(o, "CMDFIFO_RDATA %08x\n", val);
83
84#if HOST1X_HW <= 6
85 /* Peek pointer values are invalid during SLCG, so disable it */
86 host1x_hypervisor_writel(host, 0x1, HOST1X_HV_ICG_EN_OVERRIDE);
87
88 val = 0;
89 val |= HOST1X_HV_CMDFIFO_PEEK_CTRL_ENABLE;
90 val |= HOST1X_HV_CMDFIFO_PEEK_CTRL_CHANNEL(ch->id);
91 host1x_hypervisor_writel(host, val, HOST1X_HV_CMDFIFO_PEEK_CTRL);
92
93 val = host1x_hypervisor_readl(host, HOST1X_HV_CMDFIFO_PEEK_PTRS);
94 rd_ptr = HOST1X_HV_CMDFIFO_PEEK_PTRS_RD_PTR_V(val);
95 wr_ptr = HOST1X_HV_CMDFIFO_PEEK_PTRS_WR_PTR_V(val);
96
97 val = host1x_hypervisor_readl(host, HOST1X_HV_CMDFIFO_SETUP(ch->id));
98 start = HOST1X_HV_CMDFIFO_SETUP_BASE_V(val);
99 end = HOST1X_HV_CMDFIFO_SETUP_LIMIT_V(val);
100
101 do {
102 val = 0;
103 val |= HOST1X_HV_CMDFIFO_PEEK_CTRL_ENABLE;
104 val |= HOST1X_HV_CMDFIFO_PEEK_CTRL_CHANNEL(ch->id);
105 val |= HOST1X_HV_CMDFIFO_PEEK_CTRL_ADDR(rd_ptr);
106 host1x_hypervisor_writel(host, val,
107 HOST1X_HV_CMDFIFO_PEEK_CTRL);
108
109 val = host1x_hypervisor_readl(host,
110 HOST1X_HV_CMDFIFO_PEEK_READ);
111
112 if (!data_count) {
113 host1x_debug_output(o, "%03x 0x%08x: ",
114 rd_ptr - start, val);
115 data_count = show_channel_command(o, val, &payload);
116 } else {
117 host1x_debug_cont(o, "%08x%s", val,
118 data_count > 1 ? ", " : "])\n");
119 data_count--;
120 }
121
122 if (rd_ptr == end)
123 rd_ptr = start;
124 else
125 rd_ptr++;
126 } while (rd_ptr != wr_ptr);
127
128 if (data_count)
129 host1x_debug_cont(o, ", ...])\n");
130 host1x_debug_output(o, "\n");
131
132 host1x_hypervisor_writel(host, 0x0, HOST1X_HV_CMDFIFO_PEEK_CTRL);
133 host1x_hypervisor_writel(host, 0x0, HOST1X_HV_ICG_EN_OVERRIDE);
134#endif
135}
136
137static void host1x_debug_show_mlocks(struct host1x *host, struct output *o)
138{
139 /* TODO */
140}