// SPDX-License-Identifier: GPL-2.0+
/*
 * Copyright (C) 2023 Loongson Technology Corporation Limited
 */

#include <drm/drm_debugfs.h>
#include <drm/drm_print.h>

#include "lsdc_benchmark.h"
#include "lsdc_drv.h"
#include "lsdc_gem.h"
#include "lsdc_probe.h"
#include "lsdc_ttm.h"

/* device level debugfs */

static int lsdc_identify(struct seq_file *m, void *arg)
{
        struct drm_info_node *node = (struct drm_info_node *)m->private;
        struct lsdc_device *ldev = (struct lsdc_device *)node->info_ent->data;
        const struct loongson_gfx_desc *gfx = to_loongson_gfx(ldev->descp);
        u8 impl, rev;

        loongson_cpu_get_prid(&impl, &rev);

        seq_printf(m, "Running on cpu 0x%x, cpu revision: 0x%x\n",
                   impl, rev);

        seq_printf(m, "Contained in: %s\n", gfx->model);

        return 0;
}

static int lsdc_show_mm(struct seq_file *m, void *arg)
{
        struct drm_info_node *node = (struct drm_info_node *)m->private;
        struct drm_device *ddev = node->minor->dev;
        struct drm_printer p = drm_seq_file_printer(m);

        drm_mm_print(&ddev->vma_offset_manager->vm_addr_space_mm, &p);

        return 0;
}

static int lsdc_show_gfxpll_clock(struct seq_file *m, void *arg)
{
        struct drm_info_node *node = (struct drm_info_node *)m->private;
        struct lsdc_device *ldev = (struct lsdc_device *)node->info_ent->data;
        struct drm_printer printer = drm_seq_file_printer(m);
        struct loongson_gfxpll *gfxpll = ldev->gfxpll;

        gfxpll->funcs->print(gfxpll, &printer, true);

        return 0;
}

static int lsdc_show_benchmark(struct seq_file *m, void *arg)
{
        struct drm_info_node *node = (struct drm_info_node *)m->private;
        struct lsdc_device *ldev = (struct lsdc_device *)node->info_ent->data;
        struct drm_printer printer = drm_seq_file_printer(m);

        lsdc_show_benchmark_copy(ldev, &printer);

        return 0;
}

static int lsdc_pdev_enable_io_mem(struct seq_file *m, void *arg)
{
        struct drm_info_node *node = (struct drm_info_node *)m->private;
        struct lsdc_device *ldev = (struct lsdc_device *)node->info_ent->data;
        u16 cmd;

        pci_read_config_word(ldev->dc, PCI_COMMAND, &cmd);

        seq_printf(m, "PCI_COMMAND: 0x%x\n", cmd);

        cmd |= PCI_COMMAND_MEMORY | PCI_COMMAND_IO;

        pci_write_config_word(ldev->dc, PCI_COMMAND, cmd);

        pci_read_config_word(ldev->dc, PCI_COMMAND, &cmd);

        seq_printf(m, "PCI_COMMAND: 0x%x\n", cmd);

        return 0;
}

static struct drm_info_list lsdc_debugfs_list[] = {
        { "benchmark",   lsdc_show_benchmark, 0, NULL },
        { "bos",         lsdc_show_buffer_object, 0, NULL },
        { "chips",       lsdc_identify, 0, NULL },
        { "clocks",      lsdc_show_gfxpll_clock, 0, NULL },
        { "dc_enable",   lsdc_pdev_enable_io_mem, 0, NULL },
        { "mm",          lsdc_show_mm, 0, NULL },
};

void lsdc_debugfs_init(struct drm_minor *minor)
{
        struct drm_device *ddev = minor->dev;
        struct lsdc_device *ldev = to_lsdc(ddev);
        unsigned int n = ARRAY_SIZE(lsdc_debugfs_list);
        unsigned int i;

        for (i = 0; i < n; ++i)
                lsdc_debugfs_list[i].data = ldev;

        drm_debugfs_create_files(lsdc_debugfs_list, n, minor->debugfs_root, minor);

        lsdc_ttm_debugfs_init(ldev);
}