/*
 * Copyright 2023 Red Hat Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 */
#include "priv.h"
#include "ram.h"

#include <subdev/gsp.h>

static const struct nvkm_ram_func
r535_fb_ram = {
};

static int
r535_fb_ram_new(struct nvkm_fb *fb, struct nvkm_ram **pram)
{
        struct nvkm_gsp *gsp = fb->subdev.device->gsp;
        struct nvkm_ram *ram;
        int ret;

        if (!(ram = *pram = kzalloc_obj(*ram)))
                return -ENOMEM;

        ram->func = &r535_fb_ram;
        ram->fb = fb;
        ram->type = NVKM_RAM_TYPE_UNKNOWN; /*TODO: pull this from GSP. */
        ram->size = gsp->fb.size;
        ram->stolen = false;
        mutex_init(&ram->mutex);

        for (int i = 0; i < gsp->fb.region_nr; i++) {
                ret = nvkm_mm_init(&ram->vram, NVKM_RAM_MM_NORMAL,
                                   gsp->fb.region[i].addr >> NVKM_RAM_MM_SHIFT,
                                   gsp->fb.region[i].size >> NVKM_RAM_MM_SHIFT,
                                   1);
                if (ret)
                        return ret;
        }

        return 0;
}

static void *
r535_fb_dtor(struct nvkm_fb *fb)
{
        kfree(fb->func);
        return fb;
}

int
r535_fb_new(const struct nvkm_fb_func *hw,
            struct nvkm_device *device, enum nvkm_subdev_type type, int inst, struct nvkm_fb **pfb)
{
        struct nvkm_fb_func *rm;
        int ret;

        if (!(rm = kzalloc_obj(*rm)))
                return -ENOMEM;

        rm->dtor = r535_fb_dtor;
        rm->sysmem.flush_page_init = hw->sysmem.flush_page_init;
        rm->vidmem.size = hw->vidmem.size;
        rm->ram_new = r535_fb_ram_new;

        ret = nvkm_fb_new_(rm, device, type, inst, pfb);
        if (ret)
                kfree(rm);

        return ret;
}