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cb9c919364
This is a hack around a bug exposed with the GSP code, I'm not sure what is happening exactly, but it appears some of our flushes don't result in proper tlb invalidation for out BAR2 and we get a BAR2 fault from GSP and it all dies. Signed-off-by: Dave Airlie <airlied@redhat.com> Signed-off-by: Danilo Krummrich <dakr@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20231130010852.4034774-1-airlied@gmail.com
80 lines
2.6 KiB
C
80 lines
2.6 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 "vmm.h"
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#include <subdev/timer.h>
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static void
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tu102_vmm_flush(struct nvkm_vmm *vmm, int depth)
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{
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struct nvkm_device *device = vmm->mmu->subdev.device;
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u32 type = 0;
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type |= 0x00000001; /* PAGE_ALL */
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if (atomic_read(&vmm->engref[NVKM_SUBDEV_BAR]))
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type |= 0x00000006; /* HUB_ONLY | ALL PDB (hack) */
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mutex_lock(&vmm->mmu->mutex);
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if (!vmm->rm.bar2_pdb)
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nvkm_wr32(device, 0xb830a0, vmm->pd->pt[0]->addr >> 8);
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else
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nvkm_wr32(device, 0xb830a0, vmm->rm.bar2_pdb >> 8);
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nvkm_wr32(device, 0xb830a4, 0x00000000);
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nvkm_wr32(device, 0xb830b0, 0x80000000 | type);
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nvkm_msec(device, 2000,
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if (!(nvkm_rd32(device, 0xb830b0) & 0x80000000))
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break;
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);
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mutex_unlock(&vmm->mmu->mutex);
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}
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static const struct nvkm_vmm_func
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tu102_vmm = {
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.join = gv100_vmm_join,
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.part = gf100_vmm_part,
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.aper = gf100_vmm_aper,
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.valid = gp100_vmm_valid,
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.flush = tu102_vmm_flush,
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.mthd = gp100_vmm_mthd,
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.page = {
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{ 47, &gp100_vmm_desc_16[4], NVKM_VMM_PAGE_Sxxx },
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{ 38, &gp100_vmm_desc_16[3], NVKM_VMM_PAGE_Sxxx },
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{ 29, &gp100_vmm_desc_16[2], NVKM_VMM_PAGE_Sxxx },
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{ 21, &gp100_vmm_desc_16[1], NVKM_VMM_PAGE_SVxC },
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{ 16, &gp100_vmm_desc_16[0], NVKM_VMM_PAGE_SVxC },
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{ 12, &gp100_vmm_desc_12[0], NVKM_VMM_PAGE_SVHx },
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{}
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}
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};
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int
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tu102_vmm_new(struct nvkm_mmu *mmu, bool managed, u64 addr, u64 size,
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void *argv, u32 argc, struct lock_class_key *key,
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const char *name, struct nvkm_vmm **pvmm)
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{
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return gp100_vmm_new_(&tu102_vmm, mmu, managed, addr, size,
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argv, argc, key, name, pvmm);
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}
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