74 lines
2.6 KiB
C
74 lines
2.6 KiB
C
/*
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* Copyright 2012 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
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*/
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#include "mem.h"
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#include "vmm.h"
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#include <core/option.h>
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#include <nvif/class.h>
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static void
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nv44_mmu_init(struct nvkm_mmu *mmu)
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{
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struct nvkm_device *device = mmu->subdev.device;
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struct nvkm_memory *pt = mmu->vmm->pd->pt[0]->memory;
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u32 addr;
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/* calculate vram address of this PRAMIN block, object must be
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* allocated on 512KiB alignment, and not exceed a total size
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* of 512KiB for this to work correctly
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*/
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addr = nvkm_rd32(device, 0x10020c);
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addr -= ((nvkm_memory_addr(pt) >> 19) + 1) << 19;
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nvkm_wr32(device, 0x100850, 0x80000000);
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nvkm_wr32(device, 0x100818, mmu->vmm->null);
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nvkm_wr32(device, 0x100804, (nvkm_memory_size(pt) / 4) * 4096);
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nvkm_wr32(device, 0x100850, 0x00008000);
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nvkm_mask(device, 0x10008c, 0x00000200, 0x00000200);
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nvkm_wr32(device, 0x100820, 0x00000000);
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nvkm_wr32(device, 0x10082c, 0x00000001);
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nvkm_wr32(device, 0x100800, addr | 0x00000010);
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}
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static const struct nvkm_mmu_func
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nv44_mmu = {
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.init = nv44_mmu_init,
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.dma_bits = 39,
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.mmu = {{ -1, -1, NVIF_CLASS_MMU_NV04}},
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.mem = {{ -1, -1, NVIF_CLASS_MEM_NV04}, nv04_mem_new, nv04_mem_map },
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.vmm = {{ -1, -1, NVIF_CLASS_VMM_NV04}, nv44_vmm_new, true },
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};
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int
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nv44_mmu_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
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struct nvkm_mmu **pmmu)
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{
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if (device->type == NVKM_DEVICE_AGP ||
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!nvkm_boolopt(device->cfgopt, "NvPCIE", true))
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return nv04_mmu_new(device, type, inst, pmmu);
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return nvkm_mmu_new_(&nv44_mmu, device, type, inst, pmmu);
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}
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