From b4b7ff4b08e691656c9d77c758fc355833128ac0 Mon Sep 17 00:00:00 2001 From: André Fabian Silva Delgado Date: Wed, 20 Jan 2016 14:01:31 -0300 Subject: Linux-libre 4.4-gnu --- drivers/gpu/drm/nouveau/nvkm/subdev/pci/nv46.c | 51 ++++++++++++++++++++++++++ 1 file changed, 51 insertions(+) create mode 100644 drivers/gpu/drm/nouveau/nvkm/subdev/pci/nv46.c (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/pci/nv46.c') diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/pci/nv46.c b/drivers/gpu/drm/nouveau/nvkm/subdev/pci/nv46.c new file mode 100644 index 000000000..fc617e4c0 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/pci/nv46.c @@ -0,0 +1,51 @@ +/* + * Copyright 2015 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" + +#include + +/* MSI re-arm through the PRI appears to be broken on NV46/NV50/G84/G86/G92, + * so we access it via alternate PCI config space mechanisms. + */ +void +nv46_pci_msi_rearm(struct nvkm_pci *pci) +{ + struct nvkm_device *device = pci->subdev.device; + struct pci_dev *pdev = device->func->pci(device)->pdev; + pci_write_config_byte(pdev, 0x68, 0xff); +} + +static const struct nvkm_pci_func +nv46_pci_func = { + .rd32 = nv40_pci_rd32, + .wr08 = nv40_pci_wr08, + .wr32 = nv40_pci_wr32, + .msi_rearm = nv46_pci_msi_rearm, +}; + +int +nv46_pci_new(struct nvkm_device *device, int index, struct nvkm_pci **ppci) +{ + return nvkm_pci_new_(&nv46_pci_func, device, index, ppci); +} -- cgit v1.2.3-54-g00ecf