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44f93b209e
This commit enables basic support for Hopper GPUs, and is intended primarily as a base supporting Blackwell GPUs, which reuse most of the code added here. Advanced features such as Confidential Compute are not supported. Beyond a few miscellaneous register moves and HW class ID plumbing, the bulk of the changes implemented here are to support the GSP-RM boot sequence used on Hopper/Blackwell GPUs, as well as a new page table layout. There should be no changes here that impact prior GPUs. Signed-off-by: Ben Skeggs <bskeggs@nvidia.com> Co-developed-by: Timur Tabi <ttabi@nvidia.com> Signed-off-by: Timur Tabi <ttabi@nvidia.com> Reviewed-by: Dave Airlie <airlied@redhat.com> Reviewed-by: Timur Tabi <ttabi@nvidia.com> Tested-by: Timur Tabi <ttabi@nvidia.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
30 lines
860 B
C
30 lines
860 B
C
/* SPDX-License-Identifier: MIT
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*
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* Copyright (c) 2025, NVIDIA CORPORATION. All rights reserved.
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*/
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#include "priv.h"
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#include <nvhw/drf.h>
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#include <nvhw/ref/gh100/dev_fb.h>
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static void
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gh100_fb_sysmem_flush_page_init(struct nvkm_fb *fb)
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{
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const u64 addr = fb->sysmem.flush_page_addr >> NV_PFB_NISO_FLUSH_SYSMEM_ADDR_SHIFT;
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struct nvkm_device *device = fb->subdev.device;
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nvkm_wr32(device, NV_PFB_FBHUB_PCIE_FLUSH_SYSMEM_ADDR_HI, upper_32_bits(addr));
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nvkm_wr32(device, NV_PFB_FBHUB_PCIE_FLUSH_SYSMEM_ADDR_LO, lower_32_bits(addr));
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}
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static const struct nvkm_fb_func
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gh100_fb = {
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.sysmem.flush_page_init = gh100_fb_sysmem_flush_page_init,
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.vidmem.size = ga102_fb_vidmem_size,
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};
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int
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gh100_fb_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, struct nvkm_fb **pfb)
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{
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return r535_fb_new(&gh100_fb, device, type, inst, pfb);
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}
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