// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (C) 2010 Google, Inc.
 * Author: Erik Gilling <konkers@android.com>
 *
 * Copyright (C) 2011-2013 NVIDIA Corporation
 */

#include "../dev.h"
#include "../debug.h"
#include "../cdma.h"
#include "../channel.h"

static void host1x_debug_show_channel_cdma(struct host1x *host,
                                           struct host1x_channel *ch,
                                           struct output *o)
{
        struct host1x_cdma *cdma = &ch->cdma;
        dma_addr_t dmastart, dmaend;
        u32 dmaput, dmaget, dmactrl;
        u32 cbstat, cbread;
        u32 val, base, baseval;

        dmastart = host1x_ch_readl(ch, HOST1X_CHANNEL_DMASTART);
        dmaend = host1x_ch_readl(ch, HOST1X_CHANNEL_DMAEND);
        dmaput = host1x_ch_readl(ch, HOST1X_CHANNEL_DMAPUT);
        dmaget = host1x_ch_readl(ch, HOST1X_CHANNEL_DMAGET);
        dmactrl = host1x_ch_readl(ch, HOST1X_CHANNEL_DMACTRL);
        cbread = host1x_sync_readl(host, HOST1X_SYNC_CBREAD(ch->id));
        cbstat = host1x_sync_readl(host, HOST1X_SYNC_CBSTAT(ch->id));

        host1x_debug_output(o, "%u-%s: ", ch->id, dev_name(ch->dev));

        if (HOST1X_CHANNEL_DMACTRL_DMASTOP_V(dmactrl) ||
            !ch->cdma.push_buffer.mapped) {
                host1x_debug_output(o, "inactive\n\n");
                return;
        }

        if (HOST1X_SYNC_CBSTAT_CBCLASS_V(cbstat) == HOST1X_CLASS_HOST1X &&
            HOST1X_SYNC_CBSTAT_CBOFFSET_V(cbstat) ==
                        HOST1X_UCLASS_WAIT_SYNCPT)
                host1x_debug_output(o, "waiting on syncpt %d val %d\n",
                                    cbread >> 24, cbread & 0xffffff);
        else if (HOST1X_SYNC_CBSTAT_CBCLASS_V(cbstat) ==
                                HOST1X_CLASS_HOST1X &&
                 HOST1X_SYNC_CBSTAT_CBOFFSET_V(cbstat) ==
                                HOST1X_UCLASS_WAIT_SYNCPT_BASE) {
                base = (cbread >> 16) & 0xff;
                baseval =
                        host1x_sync_readl(host, HOST1X_SYNC_SYNCPT_BASE(base));
                val = cbread & 0xffff;
                host1x_debug_output(o, "waiting on syncpt %d val %d (base %d = %d; offset = %d)\n",
                                    cbread >> 24, baseval + val, base,
                                    baseval, val);
        } else
                host1x_debug_output(o, "active class %02x, offset %04x, val %08x\n",
                                    HOST1X_SYNC_CBSTAT_CBCLASS_V(cbstat),
                                    HOST1X_SYNC_CBSTAT_CBOFFSET_V(cbstat),
                                    cbread);

        host1x_debug_output(o, "DMASTART %pad, DMAEND %pad\n", &dmastart, &dmaend);
        host1x_debug_output(o, "DMAPUT %08x DMAGET %08x DMACTL %08x\n",
                            dmaput, dmaget, dmactrl);
        host1x_debug_output(o, "CBREAD %08x CBSTAT %08x\n", cbread, cbstat);

        show_channel_gathers(o, cdma);
        host1x_debug_output(o, "\n");
}

static void host1x_debug_show_channel_fifo(struct host1x *host,
                                           struct host1x_channel *ch,
                                           struct output *o)
{
        u32 val, rd_ptr, wr_ptr, start, end;
        unsigned int data_count = 0;

        host1x_debug_output(o, "%u: fifo:\n", ch->id);

        val = host1x_ch_readl(ch, HOST1X_CHANNEL_FIFOSTAT);
        host1x_debug_output(o, "FIFOSTAT %08x\n", val);
        if (HOST1X_CHANNEL_FIFOSTAT_CFEMPTY_V(val)) {
                host1x_debug_output(o, "[empty]\n");
                return;
        }

        host1x_sync_writel(host, 0x0, HOST1X_SYNC_CFPEEK_CTRL);
        host1x_sync_writel(host, HOST1X_SYNC_CFPEEK_CTRL_ENA_F(1) |
                           HOST1X_SYNC_CFPEEK_CTRL_CHANNR_F(ch->id),
                           HOST1X_SYNC_CFPEEK_CTRL);

        val = host1x_sync_readl(host, HOST1X_SYNC_CFPEEK_PTRS);
        rd_ptr = HOST1X_SYNC_CFPEEK_PTRS_CF_RD_PTR_V(val);
        wr_ptr = HOST1X_SYNC_CFPEEK_PTRS_CF_WR_PTR_V(val);

        val = host1x_sync_readl(host, HOST1X_SYNC_CF_SETUP(ch->id));
        start = HOST1X_SYNC_CF_SETUP_BASE_V(val);
        end = HOST1X_SYNC_CF_SETUP_LIMIT_V(val);

        do {
                host1x_sync_writel(host, 0x0, HOST1X_SYNC_CFPEEK_CTRL);
                host1x_sync_writel(host, HOST1X_SYNC_CFPEEK_CTRL_ENA_F(1) |
                                   HOST1X_SYNC_CFPEEK_CTRL_CHANNR_F(ch->id) |
                                   HOST1X_SYNC_CFPEEK_CTRL_ADDR_F(rd_ptr),
                                   HOST1X_SYNC_CFPEEK_CTRL);
                val = host1x_sync_readl(host, HOST1X_SYNC_CFPEEK_READ);

                if (!data_count) {
                        host1x_debug_output(o, "%08x: ", val);
                        data_count = show_channel_command(o, val, NULL);
                } else {
                        host1x_debug_cont(o, "%08x%s", val,
                                          data_count > 1 ? ", " : "])\n");
                        data_count--;
                }

                if (rd_ptr == end)
                        rd_ptr = start;
                else
                        rd_ptr++;
        } while (rd_ptr != wr_ptr);

        if (data_count)
                host1x_debug_cont(o, ", ...])\n");
        host1x_debug_output(o, "\n");

        host1x_sync_writel(host, 0x0, HOST1X_SYNC_CFPEEK_CTRL);
}

static void host1x_debug_show_mlocks(struct host1x *host, struct output *o)
{
        unsigned int i;

        host1x_debug_output(o, "---- mlocks ----\n");

        for (i = 0; i < host1x_syncpt_nb_mlocks(host); i++) {
                u32 owner =
                        host1x_sync_readl(host, HOST1X_SYNC_MLOCK_OWNER(i));
                if (HOST1X_SYNC_MLOCK_OWNER_CH_OWNS_V(owner))
                        host1x_debug_output(o, "%u: locked by channel %u\n",
                                i, HOST1X_SYNC_MLOCK_OWNER_CHID_V(owner));
                else if (HOST1X_SYNC_MLOCK_OWNER_CPU_OWNS_V(owner))
                        host1x_debug_output(o, "%u: locked by cpu\n", i);
                else
                        host1x_debug_output(o, "%u: unlocked\n", i);
        }

        host1x_debug_output(o, "\n");
}