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	u32 val, rd_ptr, wr_ptr, start, end;
 66	u32 payload = INVALID_PAYLOAD;
 67	unsigned int data_count = 0;
 68
 69	host1x_debug_output(o, "%u: fifo:\n", ch->id);
 70
 71	val = host1x_ch_readl(ch, HOST1X_CHANNEL_CMDFIFO_STAT);
 72	host1x_debug_output(o, "CMDFIFO_STAT %08x\n", val);
 73	if (val & HOST1X_CHANNEL_CMDFIFO_STAT_EMPTY) {
 74		host1x_debug_output(o, "[empty]\n");
 75		return;
 76	}
 77
 78	val = host1x_ch_readl(ch, HOST1X_CHANNEL_CMDFIFO_RDATA);
 79	host1x_debug_output(o, "CMDFIFO_RDATA %08x\n", val);
 80
 81	/* Peek pointer values are invalid during SLCG, so disable it */
 82	host1x_hypervisor_writel(host, 0x1, HOST1X_HV_ICG_EN_OVERRIDE);
 83
 84	val = 0;
 85	val |= HOST1X_HV_CMDFIFO_PEEK_CTRL_ENABLE;
 86	val |= HOST1X_HV_CMDFIFO_PEEK_CTRL_CHANNEL(ch->id);
 87	host1x_hypervisor_writel(host, val, HOST1X_HV_CMDFIFO_PEEK_CTRL);
 88
 89	val = host1x_hypervisor_readl(host, HOST1X_HV_CMDFIFO_PEEK_PTRS);
 90	rd_ptr = HOST1X_HV_CMDFIFO_PEEK_PTRS_RD_PTR_V(val);
 91	wr_ptr = HOST1X_HV_CMDFIFO_PEEK_PTRS_WR_PTR_V(val);
 92
 93	val = host1x_hypervisor_readl(host, HOST1X_HV_CMDFIFO_SETUP(ch->id));
 94	start = HOST1X_HV_CMDFIFO_SETUP_BASE_V(val);
 95	end = HOST1X_HV_CMDFIFO_SETUP_LIMIT_V(val);
 96
 97	do {
 98		val = 0;
 99		val |= HOST1X_HV_CMDFIFO_PEEK_CTRL_ENABLE;
100		val |= HOST1X_HV_CMDFIFO_PEEK_CTRL_CHANNEL(ch->id);
101		val |= HOST1X_HV_CMDFIFO_PEEK_CTRL_ADDR(rd_ptr);
102		host1x_hypervisor_writel(host, val,
103					 HOST1X_HV_CMDFIFO_PEEK_CTRL);
104
105		val = host1x_hypervisor_readl(host,
106					      HOST1X_HV_CMDFIFO_PEEK_READ);
107
108		if (!data_count) {
109			host1x_debug_output(o, "%03x 0x%08x: ",
110					    rd_ptr - start, val);
111			data_count = show_channel_command(o, val, &payload);
112		} else {
113			host1x_debug_cont(o, "%08x%s", val,
114					  data_count > 1 ? ", " : "])\n");
115			data_count--;
116		}
117
118		if (rd_ptr == end)
119			rd_ptr = start;
120		else
121			rd_ptr++;
122	} while (rd_ptr != wr_ptr);
123
124	if (data_count)
125		host1x_debug_cont(o, ", ...])\n");
126	host1x_debug_output(o, "\n");
127
128	host1x_hypervisor_writel(host, 0x0, HOST1X_HV_CMDFIFO_PEEK_CTRL);
129	host1x_hypervisor_writel(host, 0x0, HOST1X_HV_ICG_EN_OVERRIDE);
130}
131
132static void host1x_debug_show_mlocks(struct host1x *host, struct output *o)
133{
134	/* TODO */
135}