By registering the nvdec with actmon, engine load information can be exported to the user through debugfs for engine profiling purpose.
Signed-off-by: Johnny Liu <[email protected]> --- drivers/gpu/drm/tegra/nvdec.c | 82 ++++++++++++++++++++++++++++++++++- 1 file changed, 80 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/tegra/nvdec.c b/drivers/gpu/drm/tegra/nvdec.c index 2d9a0a3f6c381..b7c572484d1be 100644 --- a/drivers/gpu/drm/tegra/nvdec.c +++ b/drivers/gpu/drm/tegra/nvdec.c @@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0-only /* - * Copyright (c) 2015-2022, NVIDIA Corporation. + * SPDX-FileCopyrightText: Copyright (c) 2015-2024 NVIDIA CORPORATION & AFFILIATES. All rights reserved. */ #include <linux/clk.h> @@ -22,8 +22,21 @@ #include "riscv.h" #include "vic.h" -#define NVDEC_FALCON_DEBUGINFO 0x1094 +#define NVDEC_FW_MTHD_ADDR_ACTMON_ACTIVE_MASK 0xCAU +#define NVDEC_FW_MTHD_ADDR_ACTMON_ACTIVE_BORPS 0xCBU +#define NVDEC_FW_MTHD_ADDR_ACTMON_ACTIVE_WEIGHT 0xC9U +#define NVDEC_FALCON_UCLASS_METHOD_OFFSET 0x40 +#define NVDEC_FALCON_UCLASS_METHOD_DATA 0x44 +#define NVDEC_FALCON_DEBUGINFO 0x1094 #define NVDEC_TFBIF_TRANSCFG 0x2c44 +#define NVDEC_TFBIF_ACTMON_ACTIVE_MASK 0x2c4c +#define NVDEC_TFBIF_ACTMON_ACTIVE_BORPS 0x2c50 +#define NVDEC_TFBIF_ACTMON_ACTIVE_WEIGHT 0x2c54 + +#define NVDEC_TFBIF_ACTMON_ACTIVE_MASK_STARVED BIT(0) +#define NVDEC_TFBIF_ACTMON_ACTIVE_MASK_STALLED BIT(1) +#define NVDEC_TFBIF_ACTMON_ACTIVE_MASK_DELAYED BIT(2) +#define NVDEC_TFBIF_ACTMON_ACTIVE_BORPS_ACTIVE BIT(7) struct nvdec_config { const char *firmware; @@ -306,6 +319,56 @@ static int nvdec_load_falcon_firmware(struct nvdec *nvdec) return err; } +static void nvdec_actmon_reg_init(struct nvdec *nvdec) +{ + if (nvdec->config->has_riscv) { + nvdec_writel(nvdec, + NVDEC_FW_MTHD_ADDR_ACTMON_ACTIVE_MASK, + NVDEC_FALCON_UCLASS_METHOD_OFFSET); + nvdec_writel(nvdec, + NVDEC_TFBIF_ACTMON_ACTIVE_MASK_DELAYED | + NVDEC_TFBIF_ACTMON_ACTIVE_MASK_STALLED | + NVDEC_TFBIF_ACTMON_ACTIVE_MASK_STARVED, + NVDEC_FALCON_UCLASS_METHOD_DATA); + nvdec_writel(nvdec, + NVDEC_FW_MTHD_ADDR_ACTMON_ACTIVE_BORPS, + NVDEC_FALCON_UCLASS_METHOD_OFFSET); + nvdec_writel(nvdec, + NVDEC_TFBIF_ACTMON_ACTIVE_BORPS_ACTIVE, + NVDEC_FALCON_UCLASS_METHOD_DATA); + } else { + nvdec_writel(nvdec, + NVDEC_TFBIF_ACTMON_ACTIVE_MASK_DELAYED | + NVDEC_TFBIF_ACTMON_ACTIVE_MASK_STALLED | + NVDEC_TFBIF_ACTMON_ACTIVE_MASK_STARVED, + NVDEC_TFBIF_ACTMON_ACTIVE_MASK); + nvdec_writel(nvdec, + NVDEC_TFBIF_ACTMON_ACTIVE_BORPS_ACTIVE, + NVDEC_TFBIF_ACTMON_ACTIVE_BORPS); + } +} + +static void nvdec_count_weight_init(struct nvdec *nvdec, unsigned long rate) +{ + const struct nvdec_config *config = nvdec->config; + struct host1x_client *client = &nvdec->client.base; + u32 weight; + + host1x_actmon_update_client_rate(client, rate, &weight); + + if (!weight) + return; + + if (!config->has_riscv) { + nvdec_writel(nvdec, weight, NVDEC_TFBIF_ACTMON_ACTIVE_WEIGHT); + } else { + nvdec_writel(nvdec, + NVDEC_FW_MTHD_ADDR_ACTMON_ACTIVE_WEIGHT, + NVDEC_FALCON_UCLASS_METHOD_OFFSET); + nvdec_writel(nvdec, weight, NVDEC_FALCON_UCLASS_METHOD_DATA); + } +} + static __maybe_unused int nvdec_runtime_resume(struct device *dev) { struct nvdec *nvdec = dev_get_drvdata(dev); @@ -331,6 +394,10 @@ static __maybe_unused int nvdec_runtime_resume(struct device *dev) goto disable; } + nvdec_actmon_reg_init(nvdec); + nvdec_count_weight_init(nvdec, clk_get_rate(nvdec->clks[0].clk)); + host1x_actmon_enable(&nvdec->client.base); + return 0; disable: @@ -346,6 +413,8 @@ static __maybe_unused int nvdec_runtime_suspend(struct device *dev) clk_bulk_disable_unprepare(nvdec->num_clks, nvdec->clks); + host1x_actmon_disable(&nvdec->client.base); + return 0; } @@ -532,12 +601,20 @@ static int nvdec_probe(struct platform_device *pdev) goto exit_falcon; } + err = host1x_actmon_register(&nvdec->client.base); + if (err < 0) { + dev_info(&pdev->dev, "failed to register host1x actmon: %d\n", err); + goto exit_client; + } + pm_runtime_enable(dev); pm_runtime_use_autosuspend(dev); pm_runtime_set_autosuspend_delay(dev, 500); return 0; +exit_client: + host1x_client_unregister(&nvdec->client.base); exit_falcon: falcon_exit(&nvdec->falcon); @@ -549,6 +626,7 @@ static void nvdec_remove(struct platform_device *pdev) struct nvdec *nvdec = platform_get_drvdata(pdev); pm_runtime_disable(&pdev->dev); + host1x_actmon_unregister(&nvdec->client.base); host1x_client_unregister(&nvdec->client.base); falcon_exit(&nvdec->falcon); } -- 2.34.1
