1/* $NetBSD: nouveau_nvkm_subdev_fb_ramnv1a.c,v 1.4 2021/12/19 10:51:58 riastradh Exp $ */ 2 3/* 4 * Copyright 2013 Red Hat Inc. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the "Software"), 8 * to deal in the Software without restriction, including without limitation 9 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 10 * and/or sell copies of the Software, and to permit persons to whom the 11 * Software is furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included in 14 * all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 22 * OTHER DEALINGS IN THE SOFTWARE. 23 * 24 * Authors: Ben Skeggs 25 */ 26#include <sys/cdefs.h> 27__KERNEL_RCSID(0, "$NetBSD: nouveau_nvkm_subdev_fb_ramnv1a.c,v 1.4 2021/12/19 10:51:58 riastradh Exp $"); 28 29#include "ram.h" 30 31int 32nv1a_ram_new(struct nvkm_fb *fb, struct nvkm_ram **pram) 33{ 34#ifdef __NetBSD__ /* XXX pci */ 35 return -ENODEV; 36#else 37 struct pci_dev *bridge; 38 u32 mem, mib; 39 int domain = 0; 40 struct pci_dev *pdev = NULL; 41 42 if (dev_is_pci(fb->subdev.device->dev)) 43 pdev = to_pci_dev(fb->subdev.device->dev); 44 45 if (pdev) 46 domain = pci_domain_nr(pdev->bus); 47 48 bridge = pci_get_domain_bus_and_slot(domain, 0, PCI_DEVFN(0, 1)); 49 if (!bridge) { 50 nvkm_error(&fb->subdev, "no bridge device\n"); 51 return -ENODEV; 52 } 53 54 if (fb->subdev.device->chipset == 0x1a) { 55 pci_read_config_dword(bridge, 0x7c, &mem); 56 mib = ((mem >> 6) & 31) + 1; 57 } else { 58 pci_read_config_dword(bridge, 0x84, &mem); 59 mib = ((mem >> 4) & 127) + 1; 60 } 61 62 return nvkm_ram_new_(&nv04_ram_func, fb, NVKM_RAM_TYPE_STOLEN, 63 mib * 1024 * 1024, pram); 64#endif 65} 66