nv20.c

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/*
 * Copyright (C) 2010 Francisco Jerez.
 * All Rights Reserved.
 *
 * 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 (including the
 * next paragraph) 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 OWNER(S) AND/OR ITS SUPPLIERS 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 <subdev/devinit.h>
#include <subdev/vga.h>

#include "fbmem.h"

struct nv20_devinit_priv {
    struct nouveau_devinit base;
    u8 owner;
};

static void
nv20_devinit_meminit(struct nouveau_devinit *devinit)
{
    struct nv20_devinit_priv *priv = (void *)devinit;
    struct nouveau_device *device = nv_device(priv);
    uint32_t mask = (device->chipset >= 0x25 ? 0x300 : 0x900);
    uint32_t amount, off;
    struct io_mapping *fb;

    /* Map the framebuffer aperture */
    fb = fbmem_init(nv_device(priv)->pdev);
    if (!fb) {
        nv_error(priv, "failed to map fb\n");
        return;
    }

    nv_wr32(priv, NV10_PFB_REFCTRL, NV10_PFB_REFCTRL_VALID_1);

    /* Allow full addressing */
    nv_mask(priv, NV04_PFB_CFG0, 0, mask);

    amount = nv_rd32(priv, 0x10020c);
    for (off = amount; off > 0x2000000; off -= 0x2000000)
        fbmem_poke(fb, off - 4, off);

    amount = nv_rd32(priv, 0x10020c);
    if (amount != fbmem_peek(fb, amount - 4))
        /* IC missing - disable the upper half memory space. */
        nv_mask(priv, NV04_PFB_CFG0, mask, 0);

    fbmem_fini(fb);
}

static int
nv20_devinit_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
          struct nouveau_oclass *oclass, void *data, u32 size,
          struct nouveau_object **pobject)
{
    struct nv20_devinit_priv *priv;
    int ret;

    ret = nouveau_devinit_create(parent, engine, oclass, &priv);
    *pobject = nv_object(priv);
    if (ret)
        return ret;

    priv->base.meminit = nv20_devinit_meminit;
    return 0;
}

struct nouveau_oclass
nv20_devinit_oclass = {
    .handle = NV_SUBDEV(DEVINIT, 0x20),
    .ofuncs = &(struct nouveau_ofuncs) {
        .ctor = nv20_devinit_ctor,
        .dtor = nv04_devinit_dtor,
        .init = nv04_devinit_init,
        .fini = nv04_devinit_fini,
    },
};