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f15cde64b6
Mostly preparation to fit in Ampere changes, but should result in reset sequences a lot closer to RM's, and perhaps help out with the issues we sometimes see reported in this area. Signed-off-by: Ben Skeggs <bskeggs@redhat.com> Reviewed-by: Lyude Paul <lyude@redhat.com>
83 lines
2.3 KiB
C
83 lines
2.3 KiB
C
/*
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* Copyright 2022 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 "priv.h"
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#include <subdev/mc.h>
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#include <subdev/timer.h>
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int
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gm200_flcn_reset_wait_mem_scrubbing(struct nvkm_falcon *falcon)
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{
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nvkm_falcon_mask(falcon, 0x040, 0x00000000, 0x00000000);
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if (nvkm_msec(falcon->owner->device, 10,
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if (!(nvkm_falcon_rd32(falcon, 0x10c) & 0x00000006))
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break;
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) < 0)
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return -ETIMEDOUT;
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return 0;
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}
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int
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gm200_flcn_enable(struct nvkm_falcon *falcon)
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{
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struct nvkm_device *device = falcon->owner->device;
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int ret;
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if (falcon->func->reset_eng) {
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ret = falcon->func->reset_eng(falcon);
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if (ret)
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return ret;
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}
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if (falcon->func->reset_pmc)
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nvkm_mc_enable(device, falcon->owner->type, falcon->owner->inst);
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ret = falcon->func->reset_wait_mem_scrubbing(falcon);
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if (ret)
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return ret;
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nvkm_falcon_wr32(falcon, 0x084, nvkm_rd32(device, 0x000000));
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return 0;
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}
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int
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gm200_flcn_disable(struct nvkm_falcon *falcon)
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{
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struct nvkm_device *device = falcon->owner->device;
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int ret;
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nvkm_falcon_mask(falcon, 0x048, 0x00000003, 0x00000000);
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nvkm_falcon_wr32(falcon, 0x014, 0xffffffff);
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if (falcon->func->reset_pmc)
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nvkm_mc_disable(device, falcon->owner->type, falcon->owner->inst);
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if (falcon->func->reset_eng) {
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ret = falcon->func->reset_eng(falcon);
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if (ret)
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return ret;
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}
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return 0;
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}
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