subdev/pci/g92.c

0001 /*
0002  * Copyright 2015 Red Hat Inc.
0003  *
0004  * Permission is hereby granted, free of charge, to any person obtaining a
0005  * copy of this software and associated documentation files (the "Software"),
0006  * to deal in the Software without restriction, including without limitation
0007  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
0008  * and/or sell copies of the Software, and to permit persons to whom the
0009  * Software is furnished to do so, subject to the following conditions:
0010  *
0011  * The above copyright notice and this permission notice shall be included in
0012  * all copies or substantial portions of the Software.
0013  *
0014  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
0015  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
0016  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
0017  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
0018  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
0019  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
0020  * OTHER DEALINGS IN THE SOFTWARE.
0021  *
0022  * Authors: Ben Skeggs <bskeggs@redhat.com>
0023  */
0024 #include "priv.h"
0025
0026 int
0027 g92_pcie_version_supported(struct nvkm_pci *pci)
0028 {
0029     if ((nvkm_pci_rd32(pci, 0x460) & 0x200) == 0x200)
0030         return 2;
0031     return 1;
0032 }
0033
0034 static const struct nvkm_pci_func
0035 g92_pci_func = {
0036     .init = g84_pci_init,
0037     .rd32 = nv40_pci_rd32,
0038     .wr08 = nv40_pci_wr08,
0039     .wr32 = nv40_pci_wr32,
0040     .msi_rearm = nv46_pci_msi_rearm,
0041
0042     .pcie.init = g84_pcie_init,
0043     .pcie.set_link = g84_pcie_set_link,
0044
0045     .pcie.max_speed = g84_pcie_max_speed,
0046     .pcie.cur_speed = g84_pcie_cur_speed,
0047
0048     .pcie.set_version = g84_pcie_set_version,
0049     .pcie.version = g84_pcie_version,
0050     .pcie.version_supported = g92_pcie_version_supported,
0051 };
0052
0053 int
0054 g92_pci_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
0055         struct nvkm_pci **ppci)
0056 {
0057     return nvkm_pci_new_(&g92_pci_func, device, type, inst, ppci);
0058 }