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/*
* Copyright 2013 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.
*
* Authors: Ben Skeggs
*/
#include "priv.h"
static int
nv1a_ram_create(struct nvkm_object *parent, struct nvkm_object *engine,
struct nvkm_oclass *oclass, void *data, u32 size,
struct nvkm_object **pobject)
{
struct nvkm_fb *fb = nvkm_fb(parent);
struct nvkm_ram *ram;
struct pci_dev *bridge;
u32 mem, mib;
int ret;
bridge = pci_get_bus_and_slot(0, PCI_DEVFN(0, 1));
if (!bridge) {
nvkm_error(&fb->subdev, "no bridge device\n");
return -ENODEV;
}
ret = nvkm_ram_create(parent, engine, oclass, &ram);
*pobject = nv_object(ram);
if (ret)
return ret;
if (nv_device(fb)->chipset == 0x1a) {
pci_read_config_dword(bridge, 0x7c, &mem);
mib = ((mem >> 6) & 31) + 1;
} else {
pci_read_config_dword(bridge, 0x84, &mem);
mib = ((mem >> 4) & 127) + 1;
}
ram->type = NV_MEM_TYPE_STOLEN;
ram->size = mib * 1024 * 1024;
return 0;
}
struct nvkm_oclass
nv1a_ram_oclass = {
.handle = 0,
.ofuncs = &(struct nvkm_ofuncs) {
.ctor = nv1a_ram_create,
.dtor = _nvkm_ram_dtor,
.init = _nvkm_ram_init,
.fini = _nvkm_ram_fini,
}
};
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