root/drivers/gpu/host1x/hw/debug_hw.c
// 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"

#define HOST1X_DEBUG_MAX_PAGE_OFFSET 102400

enum {
        HOST1X_OPCODE_SETCLASS  = 0x00,
        HOST1X_OPCODE_INCR      = 0x01,
        HOST1X_OPCODE_NONINCR   = 0x02,
        HOST1X_OPCODE_MASK      = 0x03,
        HOST1X_OPCODE_IMM       = 0x04,
        HOST1X_OPCODE_RESTART   = 0x05,
        HOST1X_OPCODE_GATHER    = 0x06,
        HOST1X_OPCODE_SETSTRMID = 0x07,
        HOST1X_OPCODE_SETAPPID  = 0x08,
        HOST1X_OPCODE_SETPYLD   = 0x09,
        HOST1X_OPCODE_INCR_W    = 0x0a,
        HOST1X_OPCODE_NONINCR_W = 0x0b,
        HOST1X_OPCODE_GATHER_W  = 0x0c,
        HOST1X_OPCODE_RESTART_W = 0x0d,
        HOST1X_OPCODE_EXTEND    = 0x0e,
};

enum {
        HOST1X_OPCODE_EXTEND_ACQUIRE_MLOCK      = 0x00,
        HOST1X_OPCODE_EXTEND_RELEASE_MLOCK      = 0x01,
};

#define INVALID_PAYLOAD                         0xffffffff

static unsigned int show_channel_command(struct output *o, u32 val,
                                         u32 *payload)
{
        unsigned int mask, subop, num, opcode;

        opcode = val >> 28;

        switch (opcode) {
        case HOST1X_OPCODE_SETCLASS:
                mask = val & 0x3f;
                if (mask) {
                        host1x_debug_cont(o, "SETCL(class=%03x, offset=%03x, mask=%02x, [",
                                            val >> 6 & 0x3ff,
                                            val >> 16 & 0xfff, mask);
                        return hweight8(mask);
                }

                host1x_debug_cont(o, "SETCL(class=%03x)\n", val >> 6 & 0x3ff);
                return 0;

        case HOST1X_OPCODE_INCR:
                num = val & 0xffff;
                host1x_debug_cont(o, "INCR(offset=%03x, [",
                                    val >> 16 & 0xfff);
                if (!num)
                        host1x_debug_cont(o, "])\n");

                return num;

        case HOST1X_OPCODE_NONINCR:
                num = val & 0xffff;
                host1x_debug_cont(o, "NONINCR(offset=%03x, [",
                                    val >> 16 & 0xfff);
                if (!num)
                        host1x_debug_cont(o, "])\n");

                return num;

        case HOST1X_OPCODE_MASK:
                mask = val & 0xffff;
                host1x_debug_cont(o, "MASK(offset=%03x, mask=%03x, [",
                                    val >> 16 & 0xfff, mask);
                if (!mask)
                        host1x_debug_cont(o, "])\n");

                return hweight16(mask);

        case HOST1X_OPCODE_IMM:
                host1x_debug_cont(o, "IMM(offset=%03x, data=%03x)\n",
                                    val >> 16 & 0xfff, val & 0xffff);
                return 0;

        case HOST1X_OPCODE_RESTART:
                host1x_debug_cont(o, "RESTART(offset=%08x)\n", val << 4);
                return 0;

        case HOST1X_OPCODE_GATHER:
                host1x_debug_cont(o, "GATHER(offset=%03x, insert=%d, type=%d, count=%04x, addr=[",
                                    val >> 16 & 0xfff, val >> 15 & 0x1,
                                    val >> 14 & 0x1, val & 0x3fff);
                return 1;

#if HOST1X_HW >= 6
        case HOST1X_OPCODE_SETSTRMID:
                host1x_debug_cont(o, "SETSTRMID(offset=%06x)\n",
                                  val & 0x3fffff);
                return 0;

        case HOST1X_OPCODE_SETAPPID:
                host1x_debug_cont(o, "SETAPPID(appid=%02x)\n", val & 0xff);
                return 0;

        case HOST1X_OPCODE_SETPYLD:
                *payload = val & 0xffff;
                host1x_debug_cont(o, "SETPYLD(data=%04x)\n", *payload);
                return 0;

        case HOST1X_OPCODE_INCR_W:
        case HOST1X_OPCODE_NONINCR_W:
                host1x_debug_cont(o, "%s(offset=%06x, ",
                                  opcode == HOST1X_OPCODE_INCR_W ?
                                        "INCR_W" : "NONINCR_W",
                                  val & 0x3fffff);
                if (*payload == 0) {
                        host1x_debug_cont(o, "[])\n");
                        return 0;
                } else if (*payload == INVALID_PAYLOAD) {
                        host1x_debug_cont(o, "unknown)\n");
                        return 0;
                } else {
                        host1x_debug_cont(o, "[");
                        return *payload;
                }

        case HOST1X_OPCODE_GATHER_W:
                host1x_debug_cont(o, "GATHER_W(count=%04x, addr=[",
                                  val & 0x3fff);
                return 2;
#endif

        case HOST1X_OPCODE_EXTEND:
                subop = val >> 24 & 0xf;
                if (subop == HOST1X_OPCODE_EXTEND_ACQUIRE_MLOCK)
                        host1x_debug_cont(o, "ACQUIRE_MLOCK(index=%d)\n",
                                            val & 0xff);
                else if (subop == HOST1X_OPCODE_EXTEND_RELEASE_MLOCK)
                        host1x_debug_cont(o, "RELEASE_MLOCK(index=%d)\n",
                                            val & 0xff);
                else
                        host1x_debug_cont(o, "EXTEND_UNKNOWN(%08x)\n", val);
                return 0;

        default:
                host1x_debug_cont(o, "UNKNOWN\n");
                return 0;
        }
}

static void show_gather(struct output *o, dma_addr_t phys_addr,
                        unsigned int words, struct host1x_cdma *cdma,
                        dma_addr_t pin_addr, u32 *map_addr)
{
        /* Map dmaget cursor to corresponding mem handle */
        u32 offset = phys_addr - pin_addr;
        unsigned int data_count = 0, i;
        u32 payload = INVALID_PAYLOAD;

        /*
         * Sometimes we're given different hardware address to the same
         * page - in these cases the offset will get an invalid number and
         * we just have to bail out.
         */
        if (offset > HOST1X_DEBUG_MAX_PAGE_OFFSET) {
                host1x_debug_output(o, "[address mismatch]\n");
                return;
        }

        for (i = 0; i < words; i++) {
                dma_addr_t addr = phys_addr + i * 4;
                u32 voffset = offset + i * 4;
                u32 val;

                /* If we reach the RESTART opcode, continue at the beginning of pushbuffer */
                if (cdma && voffset >= cdma->push_buffer.size) {
                        addr -= cdma->push_buffer.size;
                        voffset -= cdma->push_buffer.size;
                }

                val = *(map_addr + voffset / 4);

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

static void show_channel_gathers(struct output *o, struct host1x_cdma *cdma)
{
        struct push_buffer *pb = &cdma->push_buffer;
        struct host1x_job *job;

        list_for_each_entry(job, &cdma->sync_queue, list) {
                unsigned int i;

                host1x_debug_output(o, "JOB, syncpt %u: %u timeout: %u num_slots: %u num_handles: %u\n",
                                    job->syncpt->id, job->syncpt_end, job->timeout,
                                    job->num_slots, job->num_unpins);

                show_gather(o, pb->dma + job->first_get, job->num_slots * 2, cdma,
                            pb->dma, pb->mapped);

                for (i = 0; i < job->num_cmds; i++) {
                        struct host1x_job_gather *g;
                        u32 *mapped;

                        if (job->cmds[i].is_wait)
                                continue;

                        g = &job->cmds[i].gather;

                        if (job->gather_copy_mapped)
                                mapped = (u32 *)job->gather_copy_mapped;
                        else
                                mapped = host1x_bo_mmap(g->bo);

                        if (!mapped) {
                                host1x_debug_output(o, "[could not mmap]\n");
                                continue;
                        }

                        host1x_debug_output(o, "  GATHER at %pad+%#x, %d words\n",
                                            &g->base, g->offset, g->words);

                        show_gather(o, g->base + g->offset, g->words, NULL,
                                    g->base, mapped);

                        if (!job->gather_copy_mapped)
                                host1x_bo_munmap(g->bo, mapped);
                }
        }
}

#if HOST1X_HW >= 6
#include "debug_hw_1x06.c"
#else
#include "debug_hw_1x01.c"
#endif

static const struct host1x_debug_ops host1x_debug_ops = {
        .show_channel_cdma = host1x_debug_show_channel_cdma,
        .show_channel_fifo = host1x_debug_show_channel_fifo,
        .show_mlocks = host1x_debug_show_mlocks,
};