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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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48 lines
1.6 KiB
C
48 lines
1.6 KiB
C
/*
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* Copyright 2018 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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#include <nvif/user.h>
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static u64
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nvif_userc361_time(struct nvif_user *user)
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{
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u32 hi, lo;
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do {
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hi = nvif_rd32(&user->object, 0x084);
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lo = nvif_rd32(&user->object, 0x080);
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} while (hi != nvif_rd32(&user->object, 0x084));
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return ((u64)hi << 32 | lo);
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}
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static void
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nvif_userc361_doorbell(struct nvif_user *user, u32 token)
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{
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nvif_wr32(&user->object, 0x90, token);
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}
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const struct nvif_user_func
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nvif_userc361 = {
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.doorbell = nvif_userc361_doorbell,
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.time = nvif_userc361_time,
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};
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