2 * Copyright 2015 Red Hat Inc.
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * 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 OR
20 * OTHER DEALINGS IN THE SOFTWARE.
22 * Authors: Ben Skeggs <bskeggs@redhat.com>
27 gf100_pci_msi_rearm(struct nvkm_pci *pci)
29 nvkm_pci_wr08(pci, 0x0704, 0xff);
33 gf100_pcie_set_version(struct nvkm_pci *pci, u8 ver)
35 struct nvkm_device *device = pci->subdev.device;
36 nvkm_mask(device, 0x02241c, 0x1, ver > 1 ? 1 : 0);
40 gf100_pcie_version(struct nvkm_pci *pci)
42 struct nvkm_device *device = pci->subdev.device;
43 return (nvkm_rd32(device, 0x02241c) & 0x1) + 1;
47 gf100_pcie_set_cap_speed(struct nvkm_pci *pci, bool full_speed)
49 struct nvkm_device *device = pci->subdev.device;
50 nvkm_mask(device, 0x02241c, 0x80, full_speed ? 0x80 : 0x0);
54 gf100_pcie_cap_speed(struct nvkm_pci *pci)
56 struct nvkm_device *device = pci->subdev.device;
57 u8 punits_pci_cap_speed = nvkm_rd32(device, 0x02241c) & 0x80;
58 if (punits_pci_cap_speed == 0x80)
64 gf100_pcie_init(struct nvkm_pci *pci)
66 bool full_speed = g84_pcie_cur_speed(pci) == NVKM_PCIE_SPEED_5_0;
67 gf100_pcie_set_cap_speed(pci, full_speed);
72 gf100_pcie_set_link(struct nvkm_pci *pci, enum nvkm_pcie_speed speed, u8 width)
74 gf100_pcie_set_cap_speed(pci, speed == NVKM_PCIE_SPEED_5_0);
75 g84_pcie_set_link_speed(pci, speed);
79 static const struct nvkm_pci_func
82 .rd32 = nv40_pci_rd32,
83 .wr08 = nv40_pci_wr08,
84 .wr32 = nv40_pci_wr32,
85 .msi_rearm = gf100_pci_msi_rearm,
87 .pcie.init = gf100_pcie_init,
88 .pcie.set_link = gf100_pcie_set_link,
90 .pcie.max_speed = g84_pcie_max_speed,
91 .pcie.cur_speed = g84_pcie_cur_speed,
93 .pcie.set_version = gf100_pcie_set_version,
94 .pcie.version = gf100_pcie_version,
95 .pcie.version_supported = g94_pcie_version_supported,
99 gf100_pci_new(struct nvkm_device *device, int index, struct nvkm_pci **ppci)
101 return nvkm_pci_new_(&gf100_pci_func, device, index, ppci);