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41a9f72f78
Add API for reading the activity monitor average count for VIC, NVENC, and NVDEC. There is currently no support for initializing actmon, so this relies on someone else on a virtualized system having initialized it (and mapped the actmon region read-only). Bug 3973633 Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com> Change-Id: Ia1bfec6a090d4effb288b17cbac4d42bf5d0b4e5 Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvidia/+/2864719 Reviewed-by: svc_kernel_abi <svc_kernel_abi@nvidia.com> Reviewed-by: Jonathan Hunter <jonathanh@nvidia.com> GVS: Gerrit_Virtual_Submit <buildbot_gerritrpt@nvidia.com>
37 lines
699 B
C
37 lines
699 B
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Tegra host1x activity monitor interfaes
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*
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* Copyright (c) 2023, NVIDIA Corporation.
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*/
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#include "dev.h"
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int host1x_actmon_read_avg_count(struct host1x_client *client)
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{
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struct host1x *host = dev_get_drvdata(client->host->parent);
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unsigned int offset;
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if (!host->actmon_regs)
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return -ENODEV;
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/* FIXME: Only T234 supported */
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switch (client->class) {
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case HOST1X_CLASS_NVENC:
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offset = 0x0;
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break;
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case HOST1X_CLASS_VIC:
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offset = 0x10000;
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break;
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case HOST1X_CLASS_NVDEC:
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offset = 0x20000;
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break;
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default:
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return -EINVAL;
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}
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return readl(host->actmon_regs + offset + 0xa4);
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}
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EXPORT_SYMBOL(host1x_actmon_read_avg_count);
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