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
 14static 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
 52static 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
128static void host1x_debug_show_mlocks(struct host1x *host, struct output *o)
129{
130	/* TODO */
131}