1 /*
2  * Copyright 2015 Red Hat Inc.
3  *
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:
10  *
11  * The above copyright notice and this permission notice shall be included in
12  * all copies or substantial portions of the Software.
13  *
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.
21  *
22  * Authors: Ben Skeggs <bskeggs@redhat.com>
23  */
24 #include "priv.h"
25 
26 int
27 g92_pcie_version_supported(struct nvkm_pci *pci)
28 {
29 	if ((nvkm_pci_rd32(pci, 0x460) & 0x200) == 0x200)
30 		return 2;
31 	return 1;
32 }
33 
34 static const struct nvkm_pci_func
35 g92_pci_func = {
36 	.init = g84_pci_init,
37 	.rd32 = nv40_pci_rd32,
38 	.wr08 = nv40_pci_wr08,
39 	.wr32 = nv40_pci_wr32,
40 	.msi_rearm = nv46_pci_msi_rearm,
41 
42 	.pcie.init = g84_pcie_init,
43 	.pcie.set_link = g84_pcie_set_link,
44 
45 	.pcie.max_speed = g84_pcie_max_speed,
46 	.pcie.cur_speed = g84_pcie_cur_speed,
47 
48 	.pcie.set_version = g84_pcie_set_version,
49 	.pcie.version = g84_pcie_version,
50 	.pcie.version_supported = g92_pcie_version_supported,
51 };
52 
53 int
54 g92_pci_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
55 	    struct nvkm_pci **ppci)
56 {
57 	return nvkm_pci_new_(&g92_pci_func, device, type, inst, ppci);
58 }
59