57 lines
1.9 KiB
C
57 lines
1.9 KiB
C
/*
|
|
* 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 "ram.h"
|
|
|
|
int
|
|
nv1a_ram_new(struct nvkm_fb *fb, struct nvkm_ram **pram)
|
|
{
|
|
struct pci_dev *bridge;
|
|
u32 mem, mib;
|
|
int domain = 0;
|
|
struct pci_dev *pdev = NULL;
|
|
|
|
if (dev_is_pci(fb->subdev.device->dev))
|
|
pdev = to_pci_dev(fb->subdev.device->dev);
|
|
|
|
if (pdev)
|
|
domain = pci_domain_nr(pdev->bus);
|
|
|
|
bridge = pci_get_domain_bus_and_slot(domain, 0, PCI_DEVFN(0, 1));
|
|
if (!bridge) {
|
|
nvkm_error(&fb->subdev, "no bridge device\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
if (fb->subdev.device->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;
|
|
}
|
|
|
|
return nvkm_ram_new_(&nv04_ram_func, fb, NVKM_RAM_TYPE_STOLEN,
|
|
mib * 1024 * 1024, pram);
|
|
}
|