diff options
Diffstat (limited to 'drivers/gpu/drm/tegra/nvdec.c')
-rw-r--r-- | drivers/gpu/drm/tegra/nvdec.c | 171 |
1 files changed, 146 insertions, 25 deletions
diff --git a/drivers/gpu/drm/tegra/nvdec.c b/drivers/gpu/drm/tegra/nvdec.c index 276fe0472730..10fd21517281 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) 2015-2021, NVIDIA Corporation. + * Copyright (c) 2015-2022, NVIDIA Corporation. */ #include <linux/clk.h> @@ -8,6 +8,7 @@ #include <linux/dma-mapping.h> #include <linux/host1x.h> #include <linux/iommu.h> +#include <linux/iopoll.h> #include <linux/module.h> #include <linux/of.h> #include <linux/of_device.h> @@ -16,18 +17,22 @@ #include <linux/pm_runtime.h> #include <linux/reset.h> -#include <soc/tegra/pmc.h> +#include <soc/tegra/mc.h> #include "drm.h" #include "falcon.h" +#include "riscv.h" #include "vic.h" +#define NVDEC_FALCON_DEBUGINFO 0x1094 #define NVDEC_TFBIF_TRANSCFG 0x2c44 struct nvdec_config { const char *firmware; unsigned int version; bool supports_sid; + bool has_riscv; + bool has_extra_clocks; }; struct nvdec { @@ -37,10 +42,16 @@ struct nvdec { struct tegra_drm_client client; struct host1x_channel *channel; struct device *dev; - struct clk *clk; + struct clk_bulk_data clks[3]; + unsigned int num_clks; + struct reset_control *reset; /* Platform configuration */ const struct nvdec_config *config; + + /* RISC-V specific data */ + struct tegra_drm_riscv riscv; + phys_addr_t carveout_base; }; static inline struct nvdec *to_nvdec(struct tegra_drm_client *client) @@ -54,7 +65,7 @@ static inline void nvdec_writel(struct nvdec *nvdec, u32 value, writel(value, nvdec->regs + offset); } -static int nvdec_boot(struct nvdec *nvdec) +static int nvdec_boot_falcon(struct nvdec *nvdec) { #ifdef CONFIG_IOMMU_API struct iommu_fwspec *spec = dev_iommu_fwspec_get(nvdec->dev); @@ -90,6 +101,64 @@ static int nvdec_boot(struct nvdec *nvdec) return 0; } +static int nvdec_wait_debuginfo(struct nvdec *nvdec, const char *phase) +{ + int err; + u32 val; + + err = readl_poll_timeout(nvdec->regs + NVDEC_FALCON_DEBUGINFO, val, val == 0x0, 10, 100000); + if (err) { + dev_err(nvdec->dev, "failed to boot %s, debuginfo=0x%x\n", phase, val); + return err; + } + + return 0; +} + +static int nvdec_boot_riscv(struct nvdec *nvdec) +{ + int err; + + err = reset_control_acquire(nvdec->reset); + if (err) + return err; + + nvdec_writel(nvdec, 0xabcd1234, NVDEC_FALCON_DEBUGINFO); + + err = tegra_drm_riscv_boot_bootrom(&nvdec->riscv, nvdec->carveout_base, 1, + &nvdec->riscv.bl_desc); + if (err) { + dev_err(nvdec->dev, "failed to execute bootloader\n"); + goto release_reset; + } + + err = nvdec_wait_debuginfo(nvdec, "bootloader"); + if (err) + goto release_reset; + + err = reset_control_reset(nvdec->reset); + if (err) + goto release_reset; + + nvdec_writel(nvdec, 0xabcd1234, NVDEC_FALCON_DEBUGINFO); + + err = tegra_drm_riscv_boot_bootrom(&nvdec->riscv, nvdec->carveout_base, 1, + &nvdec->riscv.os_desc); + if (err) { + dev_err(nvdec->dev, "failed to execute firmware\n"); + goto release_reset; + } + + err = nvdec_wait_debuginfo(nvdec, "firmware"); + if (err) + goto release_reset; + +release_reset: + reset_control_release(nvdec->reset); + + return err; +} + static int nvdec_init(struct host1x_client *client) { struct tegra_drm_client *drm = host1x_to_drm_client(client); @@ -189,7 +258,7 @@ static const struct host1x_client_ops nvdec_client_ops = { .exit = nvdec_exit, }; -static int nvdec_load_firmware(struct nvdec *nvdec) +static int nvdec_load_falcon_firmware(struct nvdec *nvdec) { struct host1x_client *client = &nvdec->client.base; struct tegra_drm *tegra = nvdec->client.drm; @@ -252,30 +321,35 @@ cleanup: return err; } - static __maybe_unused int nvdec_runtime_resume(struct device *dev) { struct nvdec *nvdec = dev_get_drvdata(dev); int err; - err = clk_prepare_enable(nvdec->clk); + err = clk_bulk_prepare_enable(nvdec->num_clks, nvdec->clks); if (err < 0) return err; usleep_range(10, 20); - err = nvdec_load_firmware(nvdec); - if (err < 0) - goto disable; + if (nvdec->config->has_riscv) { + err = nvdec_boot_riscv(nvdec); + if (err < 0) + goto disable; + } else { + err = nvdec_load_falcon_firmware(nvdec); + if (err < 0) + goto disable; - err = nvdec_boot(nvdec); - if (err < 0) - goto disable; + err = nvdec_boot_falcon(nvdec); + if (err < 0) + goto disable; + } return 0; disable: - clk_disable_unprepare(nvdec->clk); + clk_bulk_disable_unprepare(nvdec->num_clks, nvdec->clks); return err; } @@ -285,7 +359,7 @@ static __maybe_unused int nvdec_runtime_suspend(struct device *dev) host1x_channel_stop(nvdec->channel); - clk_disable_unprepare(nvdec->clk); + clk_bulk_disable_unprepare(nvdec->num_clks, nvdec->clks); return 0; } @@ -346,10 +420,18 @@ static const struct nvdec_config nvdec_t194_config = { .supports_sid = true, }; +static const struct nvdec_config nvdec_t234_config = { + .version = 0x23, + .supports_sid = true, + .has_riscv = true, + .has_extra_clocks = true, +}; + static const struct of_device_id tegra_nvdec_of_match[] = { { .compatible = "nvidia,tegra210-nvdec", .data = &nvdec_t210_config }, { .compatible = "nvidia,tegra186-nvdec", .data = &nvdec_t186_config }, { .compatible = "nvidia,tegra194-nvdec", .data = &nvdec_t194_config }, + { .compatible = "nvidia,tegra234-nvdec", .data = &nvdec_t234_config }, { }, }; MODULE_DEVICE_TABLE(of, tegra_nvdec_of_match); @@ -383,13 +465,22 @@ static int nvdec_probe(struct platform_device *pdev) if (IS_ERR(nvdec->regs)) return PTR_ERR(nvdec->regs); - nvdec->clk = devm_clk_get(dev, NULL); - if (IS_ERR(nvdec->clk)) { - dev_err(&pdev->dev, "failed to get clock\n"); - return PTR_ERR(nvdec->clk); + nvdec->clks[0].id = "nvdec"; + nvdec->num_clks = 1; + + if (nvdec->config->has_extra_clocks) { + nvdec->num_clks = 3; + nvdec->clks[1].id = "fuse"; + nvdec->clks[2].id = "tsec_pka"; } - err = clk_set_rate(nvdec->clk, ULONG_MAX); + err = devm_clk_bulk_get(dev, nvdec->num_clks, nvdec->clks); + if (err) { + dev_err(&pdev->dev, "failed to get clock(s)\n"); + return err; + } + + err = clk_set_rate(nvdec->clks[0].clk, ULONG_MAX); if (err < 0) { dev_err(&pdev->dev, "failed to set clock rate\n"); return err; @@ -399,12 +490,42 @@ static int nvdec_probe(struct platform_device *pdev) if (err < 0) host_class = HOST1X_CLASS_NVDEC; - nvdec->falcon.dev = dev; - nvdec->falcon.regs = nvdec->regs; + if (nvdec->config->has_riscv) { + struct tegra_mc *mc; - err = falcon_init(&nvdec->falcon); - if (err < 0) - return err; + mc = devm_tegra_memory_controller_get(dev); + if (IS_ERR(mc)) { + dev_err_probe(dev, PTR_ERR(mc), + "failed to get memory controller handle\n"); + return PTR_ERR(mc); + } + + err = tegra_mc_get_carveout_info(mc, 1, &nvdec->carveout_base, NULL); + if (err) { + dev_err(dev, "failed to get carveout info: %d\n", err); + return err; + } + + nvdec->reset = devm_reset_control_get_exclusive_released(dev, "nvdec"); + if (IS_ERR(nvdec->reset)) { + dev_err_probe(dev, PTR_ERR(nvdec->reset), "failed to get reset\n"); + return PTR_ERR(nvdec->reset); + } + + nvdec->riscv.dev = dev; + nvdec->riscv.regs = nvdec->regs; + + err = tegra_drm_riscv_read_descriptors(&nvdec->riscv); + if (err < 0) + return err; + } else { + nvdec->falcon.dev = dev; + nvdec->falcon.regs = nvdec->regs; + + err = falcon_init(&nvdec->falcon); + if (err < 0) + return err; + } platform_set_drvdata(pdev, nvdec); 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