| /* |
| * Copyright (c) 2015, NVIDIA Corporation. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| */ |
| |
| #include <linux/clk.h> |
| #include <linux/host1x.h> |
| #include <linux/iommu.h> |
| #include <linux/module.h> |
| #include <linux/of.h> |
| #include <linux/of_device.h> |
| #include <linux/of_platform.h> |
| #include <linux/platform_device.h> |
| #include <linux/pm_runtime.h> |
| #include <linux/reset.h> |
| |
| #include <soc/tegra/pmc.h> |
| |
| #include "drm.h" |
| #include "falcon.h" |
| #include "vic.h" |
| |
| struct vic_config { |
| const char *firmware; |
| unsigned int version; |
| }; |
| |
| struct vic { |
| struct falcon falcon; |
| bool booted; |
| |
| void __iomem *regs; |
| struct tegra_drm_client client; |
| struct host1x_channel *channel; |
| struct iommu_domain *domain; |
| struct device *dev; |
| struct clk *clk; |
| |
| /* Platform configuration */ |
| const struct vic_config *config; |
| }; |
| |
| static inline struct vic *to_vic(struct tegra_drm_client *client) |
| { |
| return container_of(client, struct vic, client); |
| } |
| |
| static void vic_writel(struct vic *vic, u32 value, unsigned int offset) |
| { |
| writel(value, vic->regs + offset); |
| } |
| |
| static int vic_runtime_resume(struct device *dev) |
| { |
| struct vic *vic = dev_get_drvdata(dev); |
| |
| return clk_prepare_enable(vic->clk); |
| } |
| |
| static int vic_runtime_suspend(struct device *dev) |
| { |
| struct vic *vic = dev_get_drvdata(dev); |
| |
| clk_disable_unprepare(vic->clk); |
| |
| vic->booted = false; |
| |
| return 0; |
| } |
| |
| static int vic_boot(struct vic *vic) |
| { |
| u32 fce_ucode_size, fce_bin_data_offset; |
| void *hdr; |
| int err = 0; |
| |
| if (vic->booted) |
| return 0; |
| |
| /* setup clockgating registers */ |
| vic_writel(vic, CG_IDLE_CG_DLY_CNT(4) | |
| CG_IDLE_CG_EN | |
| CG_WAKEUP_DLY_CNT(4), |
| NV_PVIC_MISC_PRI_VIC_CG); |
| |
| err = falcon_boot(&vic->falcon); |
| if (err < 0) |
| return err; |
| |
| hdr = vic->falcon.firmware.vaddr; |
| fce_bin_data_offset = *(u32 *)(hdr + VIC_UCODE_FCE_DATA_OFFSET); |
| hdr = vic->falcon.firmware.vaddr + |
| *(u32 *)(hdr + VIC_UCODE_FCE_HEADER_OFFSET); |
| fce_ucode_size = *(u32 *)(hdr + FCE_UCODE_SIZE_OFFSET); |
| |
| falcon_execute_method(&vic->falcon, VIC_SET_APPLICATION_ID, 1); |
| falcon_execute_method(&vic->falcon, VIC_SET_FCE_UCODE_SIZE, |
| fce_ucode_size); |
| falcon_execute_method(&vic->falcon, VIC_SET_FCE_UCODE_OFFSET, |
| (vic->falcon.firmware.paddr + fce_bin_data_offset) |
| >> 8); |
| |
| err = falcon_wait_idle(&vic->falcon); |
| if (err < 0) { |
| dev_err(vic->dev, |
| "failed to set application ID and FCE base\n"); |
| return err; |
| } |
| |
| vic->booted = true; |
| |
| return 0; |
| } |
| |
| static void *vic_falcon_alloc(struct falcon *falcon, size_t size, |
| dma_addr_t *iova) |
| { |
| struct tegra_drm *tegra = falcon->data; |
| |
| return tegra_drm_alloc(tegra, size, iova); |
| } |
| |
| static void vic_falcon_free(struct falcon *falcon, size_t size, |
| dma_addr_t iova, void *va) |
| { |
| struct tegra_drm *tegra = falcon->data; |
| |
| return tegra_drm_free(tegra, size, va, iova); |
| } |
| |
| static const struct falcon_ops vic_falcon_ops = { |
| .alloc = vic_falcon_alloc, |
| .free = vic_falcon_free |
| }; |
| |
| static int vic_init(struct host1x_client *client) |
| { |
| struct tegra_drm_client *drm = host1x_to_drm_client(client); |
| struct iommu_group *group = iommu_group_get(client->dev); |
| struct drm_device *dev = dev_get_drvdata(client->parent); |
| struct tegra_drm *tegra = dev->dev_private; |
| struct vic *vic = to_vic(drm); |
| int err; |
| |
| if (group && tegra->domain) { |
| err = iommu_attach_group(tegra->domain, group); |
| if (err < 0) { |
| dev_err(vic->dev, "failed to attach to domain: %d\n", |
| err); |
| return err; |
| } |
| |
| vic->domain = tegra->domain; |
| } |
| |
| if (!vic->falcon.data) { |
| vic->falcon.data = tegra; |
| err = falcon_load_firmware(&vic->falcon); |
| if (err < 0) |
| goto detach; |
| } |
| |
| vic->channel = host1x_channel_request(client->dev); |
| if (!vic->channel) { |
| err = -ENOMEM; |
| goto detach; |
| } |
| |
| client->syncpts[0] = host1x_syncpt_request(client, 0); |
| if (!client->syncpts[0]) { |
| err = -ENOMEM; |
| goto free_channel; |
| } |
| |
| err = tegra_drm_register_client(tegra, drm); |
| if (err < 0) |
| goto free_syncpt; |
| |
| return 0; |
| |
| free_syncpt: |
| host1x_syncpt_free(client->syncpts[0]); |
| free_channel: |
| host1x_channel_put(vic->channel); |
| detach: |
| if (group && tegra->domain) |
| iommu_detach_group(tegra->domain, group); |
| |
| return err; |
| } |
| |
| static int vic_exit(struct host1x_client *client) |
| { |
| struct tegra_drm_client *drm = host1x_to_drm_client(client); |
| struct iommu_group *group = iommu_group_get(client->dev); |
| struct drm_device *dev = dev_get_drvdata(client->parent); |
| struct tegra_drm *tegra = dev->dev_private; |
| struct vic *vic = to_vic(drm); |
| int err; |
| |
| err = tegra_drm_unregister_client(tegra, drm); |
| if (err < 0) |
| return err; |
| |
| host1x_syncpt_free(client->syncpts[0]); |
| host1x_channel_put(vic->channel); |
| |
| if (vic->domain) { |
| iommu_detach_group(vic->domain, group); |
| vic->domain = NULL; |
| } |
| |
| return 0; |
| } |
| |
| static const struct host1x_client_ops vic_client_ops = { |
| .init = vic_init, |
| .exit = vic_exit, |
| }; |
| |
| static int vic_open_channel(struct tegra_drm_client *client, |
| struct tegra_drm_context *context) |
| { |
| struct vic *vic = to_vic(client); |
| int err; |
| |
| err = pm_runtime_get_sync(vic->dev); |
| if (err < 0) |
| return err; |
| |
| err = vic_boot(vic); |
| if (err < 0) { |
| pm_runtime_put(vic->dev); |
| return err; |
| } |
| |
| context->channel = host1x_channel_get(vic->channel); |
| if (!context->channel) { |
| pm_runtime_put(vic->dev); |
| return -ENOMEM; |
| } |
| |
| return 0; |
| } |
| |
| static void vic_close_channel(struct tegra_drm_context *context) |
| { |
| struct vic *vic = to_vic(context->client); |
| |
| host1x_channel_put(context->channel); |
| |
| pm_runtime_put(vic->dev); |
| } |
| |
| static const struct tegra_drm_client_ops vic_ops = { |
| .open_channel = vic_open_channel, |
| .close_channel = vic_close_channel, |
| .submit = tegra_drm_submit, |
| }; |
| |
| #define NVIDIA_TEGRA_124_VIC_FIRMWARE "nvidia/tegra124/vic03_ucode.bin" |
| |
| static const struct vic_config vic_t124_config = { |
| .firmware = NVIDIA_TEGRA_124_VIC_FIRMWARE, |
| .version = 0x40, |
| }; |
| |
| #define NVIDIA_TEGRA_210_VIC_FIRMWARE "nvidia/tegra210/vic04_ucode.bin" |
| |
| static const struct vic_config vic_t210_config = { |
| .firmware = NVIDIA_TEGRA_210_VIC_FIRMWARE, |
| .version = 0x21, |
| }; |
| |
| #define NVIDIA_TEGRA_186_VIC_FIRMWARE "nvidia/tegra186/vic04_ucode.bin" |
| |
| static const struct vic_config vic_t186_config = { |
| .firmware = NVIDIA_TEGRA_186_VIC_FIRMWARE, |
| .version = 0x18, |
| }; |
| |
| static const struct of_device_id vic_match[] = { |
| { .compatible = "nvidia,tegra124-vic", .data = &vic_t124_config }, |
| { .compatible = "nvidia,tegra210-vic", .data = &vic_t210_config }, |
| { .compatible = "nvidia,tegra186-vic", .data = &vic_t186_config }, |
| { }, |
| }; |
| |
| static int vic_probe(struct platform_device *pdev) |
| { |
| struct device *dev = &pdev->dev; |
| struct host1x_syncpt **syncpts; |
| struct resource *regs; |
| struct vic *vic; |
| int err; |
| |
| vic = devm_kzalloc(dev, sizeof(*vic), GFP_KERNEL); |
| if (!vic) |
| return -ENOMEM; |
| |
| vic->config = of_device_get_match_data(dev); |
| |
| syncpts = devm_kzalloc(dev, sizeof(*syncpts), GFP_KERNEL); |
| if (!syncpts) |
| return -ENOMEM; |
| |
| regs = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| if (!regs) { |
| dev_err(&pdev->dev, "failed to get registers\n"); |
| return -ENXIO; |
| } |
| |
| vic->regs = devm_ioremap_resource(dev, regs); |
| if (IS_ERR(vic->regs)) |
| return PTR_ERR(vic->regs); |
| |
| vic->clk = devm_clk_get(dev, NULL); |
| if (IS_ERR(vic->clk)) { |
| dev_err(&pdev->dev, "failed to get clock\n"); |
| return PTR_ERR(vic->clk); |
| } |
| |
| vic->falcon.dev = dev; |
| vic->falcon.regs = vic->regs; |
| vic->falcon.ops = &vic_falcon_ops; |
| |
| err = falcon_init(&vic->falcon); |
| if (err < 0) |
| return err; |
| |
| err = falcon_read_firmware(&vic->falcon, vic->config->firmware); |
| if (err < 0) |
| goto exit_falcon; |
| |
| platform_set_drvdata(pdev, vic); |
| |
| INIT_LIST_HEAD(&vic->client.base.list); |
| vic->client.base.ops = &vic_client_ops; |
| vic->client.base.dev = dev; |
| vic->client.base.class = HOST1X_CLASS_VIC; |
| vic->client.base.syncpts = syncpts; |
| vic->client.base.num_syncpts = 1; |
| vic->dev = dev; |
| |
| INIT_LIST_HEAD(&vic->client.list); |
| vic->client.version = vic->config->version; |
| vic->client.ops = &vic_ops; |
| |
| err = host1x_client_register(&vic->client.base); |
| if (err < 0) { |
| dev_err(dev, "failed to register host1x client: %d\n", err); |
| platform_set_drvdata(pdev, NULL); |
| goto exit_falcon; |
| } |
| |
| pm_runtime_enable(&pdev->dev); |
| if (!pm_runtime_enabled(&pdev->dev)) { |
| err = vic_runtime_resume(&pdev->dev); |
| if (err < 0) |
| goto unregister_client; |
| } |
| |
| return 0; |
| |
| unregister_client: |
| host1x_client_unregister(&vic->client.base); |
| exit_falcon: |
| falcon_exit(&vic->falcon); |
| |
| return err; |
| } |
| |
| static int vic_remove(struct platform_device *pdev) |
| { |
| struct vic *vic = platform_get_drvdata(pdev); |
| int err; |
| |
| err = host1x_client_unregister(&vic->client.base); |
| if (err < 0) { |
| dev_err(&pdev->dev, "failed to unregister host1x client: %d\n", |
| err); |
| return err; |
| } |
| |
| if (pm_runtime_enabled(&pdev->dev)) |
| pm_runtime_disable(&pdev->dev); |
| else |
| vic_runtime_suspend(&pdev->dev); |
| |
| falcon_exit(&vic->falcon); |
| |
| return 0; |
| } |
| |
| static const struct dev_pm_ops vic_pm_ops = { |
| SET_RUNTIME_PM_OPS(vic_runtime_suspend, vic_runtime_resume, NULL) |
| }; |
| |
| struct platform_driver tegra_vic_driver = { |
| .driver = { |
| .name = "tegra-vic", |
| .of_match_table = vic_match, |
| .pm = &vic_pm_ops |
| }, |
| .probe = vic_probe, |
| .remove = vic_remove, |
| }; |
| |
| #if IS_ENABLED(CONFIG_ARCH_TEGRA_124_SOC) |
| MODULE_FIRMWARE(NVIDIA_TEGRA_124_VIC_FIRMWARE); |
| #endif |
| #if IS_ENABLED(CONFIG_ARCH_TEGRA_210_SOC) |
| MODULE_FIRMWARE(NVIDIA_TEGRA_210_VIC_FIRMWARE); |
| #endif |
| #if IS_ENABLED(CONFIG_ARCH_TEGRA_186_SOC) |
| MODULE_FIRMWARE(NVIDIA_TEGRA_186_VIC_FIRMWARE); |
| #endif |