104 lines
3.0 KiB
C
104 lines
3.0 KiB
C
/*
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* Copyright 2015 Red Hat Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Authors: Ben Skeggs <bskeggs@redhat.com>
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*/
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#include "priv.h"
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static void
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gf100_pci_msi_rearm(struct nvkm_pci *pci)
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{
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nvkm_pci_wr08(pci, 0x0704, 0xff);
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}
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void
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gf100_pcie_set_version(struct nvkm_pci *pci, u8 ver)
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{
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struct nvkm_device *device = pci->subdev.device;
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nvkm_mask(device, 0x02241c, 0x1, ver > 1 ? 1 : 0);
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}
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int
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gf100_pcie_version(struct nvkm_pci *pci)
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{
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struct nvkm_device *device = pci->subdev.device;
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return (nvkm_rd32(device, 0x02241c) & 0x1) + 1;
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}
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void
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gf100_pcie_set_cap_speed(struct nvkm_pci *pci, bool full_speed)
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{
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struct nvkm_device *device = pci->subdev.device;
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nvkm_mask(device, 0x02241c, 0x80, full_speed ? 0x80 : 0x0);
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}
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int
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gf100_pcie_cap_speed(struct nvkm_pci *pci)
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{
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struct nvkm_device *device = pci->subdev.device;
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u8 punits_pci_cap_speed = nvkm_rd32(device, 0x02241c) & 0x80;
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if (punits_pci_cap_speed == 0x80)
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return 1;
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return 0;
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}
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int
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gf100_pcie_init(struct nvkm_pci *pci)
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{
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bool full_speed = g84_pcie_cur_speed(pci) == NVKM_PCIE_SPEED_5_0;
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gf100_pcie_set_cap_speed(pci, full_speed);
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return 0;
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}
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int
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gf100_pcie_set_link(struct nvkm_pci *pci, enum nvkm_pcie_speed speed, u8 width)
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{
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gf100_pcie_set_cap_speed(pci, speed == NVKM_PCIE_SPEED_5_0);
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g84_pcie_set_link_speed(pci, speed);
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return 0;
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}
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static const struct nvkm_pci_func
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gf100_pci_func = {
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.init = g84_pci_init,
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.rd32 = nv40_pci_rd32,
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.wr08 = nv40_pci_wr08,
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.wr32 = nv40_pci_wr32,
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.msi_rearm = gf100_pci_msi_rearm,
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.pcie.init = gf100_pcie_init,
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.pcie.set_link = gf100_pcie_set_link,
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.pcie.max_speed = g84_pcie_max_speed,
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.pcie.cur_speed = g84_pcie_cur_speed,
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.pcie.set_version = gf100_pcie_set_version,
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.pcie.version = gf100_pcie_version,
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.pcie.version_supported = g92_pcie_version_supported,
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};
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int
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gf100_pci_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
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struct nvkm_pci **ppci)
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{
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return nvkm_pci_new_(&gf100_pci_func, device, type, inst, ppci);
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}
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