1/* $NetBSD: nouveau_nvkm_subdev_pci_nv46.c,v 1.3 2021/12/18 23:45:41 riastradh Exp $ */ 2 3/* 4 * Copyright 2015 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 <bskeggs@redhat.com> 25 */ 26#include <sys/cdefs.h> 27__KERNEL_RCSID(0, "$NetBSD: nouveau_nvkm_subdev_pci_nv46.c,v 1.3 2021/12/18 23:45:41 riastradh Exp $"); 28 29#include "priv.h" 30 31#include <core/pci.h> 32 33/* MSI re-arm through the PRI appears to be broken on NV46/NV50/G84/G86/G92, 34 * so we access it via alternate PCI config space mechanisms. 35 */ 36void 37nv46_pci_msi_rearm(struct nvkm_pci *pci) 38{ 39 struct nvkm_device *device = pci->subdev.device; 40 struct pci_dev *pdev = device->func->pci(device)->pdev; 41 pci_write_config_byte(pdev, 0x68, 0xff); 42} 43 44static const struct nvkm_pci_func 45nv46_pci_func = { 46 .rd32 = nv40_pci_rd32, 47 .wr08 = nv40_pci_wr08, 48 .wr32 = nv40_pci_wr32, 49 .msi_rearm = nv46_pci_msi_rearm, 50}; 51 52int 53nv46_pci_new(struct nvkm_device *device, int index, struct nvkm_pci **ppci) 54{ 55 return nvkm_pci_new_(&nv46_pci_func, device, index, ppci); 56} 57