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1/*2 * Copyright 2013 Red Hat Inc.3 *4 * Permission is hereby granted, free of charge, to any person obtaining a5 * copy of this software and associated documentation files (the "Software"),6 * to deal in the Software without restriction, including without limitation7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,8 * and/or sell copies of the Software, and to permit persons to whom the9 * Software is furnished to do so, subject to the following conditions:10 *11 * The above copyright notice and this permission notice shall be included in12 * all copies or substantial portions of the Software.13 *14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR20 * OTHER DEALINGS IN THE SOFTWARE.21 *22 * Authors: Ben Skeggs23 */24#include "ram.h"25 26int27nv1a_ram_new(struct nvkm_fb *fb, struct nvkm_ram **pram)28{29 struct pci_dev *bridge;30 u32 mem, mib;31 int domain = 0;32 struct pci_dev *pdev = NULL;33 34 if (dev_is_pci(fb->subdev.device->dev))35 pdev = to_pci_dev(fb->subdev.device->dev);36 37 if (pdev)38 domain = pci_domain_nr(pdev->bus);39 40 bridge = pci_get_domain_bus_and_slot(domain, 0, PCI_DEVFN(0, 1));41 if (!bridge) {42 nvkm_error(&fb->subdev, "no bridge device\n");43 return -ENODEV;44 }45 46 if (fb->subdev.device->chipset == 0x1a) {47 pci_read_config_dword(bridge, 0x7c, &mem);48 mib = ((mem >> 6) & 31) + 1;49 } else {50 pci_read_config_dword(bridge, 0x84, &mem);51 mib = ((mem >> 4) & 127) + 1;52 }53 54 return nvkm_ram_new_(&nv04_ram_func, fb, NVKM_RAM_TYPE_STOLEN,55 mib * 1024 * 1024, pram);56}57