[PATCH 6/9] accel/rocket: Add a new driver for Rockchip's NPU
Jeffrey Hugo
quic_jhugo at quicinc.com
Fri Jun 14 16:16:34 UTC 2024
On 6/12/2024 7:52 AM, Tomeu Vizoso wrote:
> This initial version supports the NPU as shipped in the RK3588 SoC and
> described in the first part of its TRM, in Chapter 36.
>
> This NPU contains 3 independent cores that the driver can submit jobs
> to.
>
> This commit adds just hardware initialization and power management.
>
> Signed-off-by: Tomeu Vizoso <tomeu at tomeuvizoso.net>
> ---
> MAINTAINERS | 8 +
> drivers/accel/Kconfig | 1 +
> drivers/accel/Makefile | 1 +
> drivers/accel/rocket/Kconfig | 13 +
> drivers/accel/rocket/Makefile | 8 +
> drivers/accel/rocket/rocket_core.c | 149 ++
> drivers/accel/rocket/rocket_core.h | 32 +
> drivers/accel/rocket/rocket_device.c | 37 +
> drivers/accel/rocket/rocket_device.h | 38 +
> drivers/accel/rocket/rocket_drv.c | 221 ++
> drivers/accel/rocket/rocket_drv.h | 13 +
> drivers/accel/rocket/rocket_registers.h | 4449 +++++++++++++++++++++++++++++++
> include/uapi/drm/rocket_accel.h | 19 +
> 13 files changed, 4989 insertions(+)
How about something in Documentation?
>
> diff --git a/MAINTAINERS b/MAINTAINERS
> index aacccb376c28..5a42ee39e2e6 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -6731,6 +6731,14 @@ T: git https://gitlab.freedesktop.org/drm/misc/kernel.git
> F: drivers/accel/ivpu/
> F: include/uapi/drm/ivpu_accel.h
>
> +DRM ACCEL DRIVER FOR ROCKCHIP NPU
> +M: Tomeu Vizoso <tomeu.vizoso at tomeuvizoso.net>
> +L: dri-devel at lists.freedesktop.org
> +S: Supported
> +T: git https://gitlab.freedesktop.org/drm/misc/kernel.git
> +F: drivers/accel/rocket/
> +F: include/uapi/drm/rocket_accel.h
> +
> DRM COMPUTE ACCELERATORS DRIVERS AND FRAMEWORK
> M: Oded Gabbay <ogabbay at kernel.org>
> L: dri-devel at lists.freedesktop.org
> diff --git a/drivers/accel/Kconfig b/drivers/accel/Kconfig
> index 64065fb8922b..8f79eea29e29 100644
> --- a/drivers/accel/Kconfig
> +++ b/drivers/accel/Kconfig
> @@ -27,5 +27,6 @@ menuconfig DRM_ACCEL
> source "drivers/accel/habanalabs/Kconfig"
> source "drivers/accel/ivpu/Kconfig"
> source "drivers/accel/qaic/Kconfig"
> +source "drivers/accel/rocket/Kconfig"
>
> endif
> diff --git a/drivers/accel/Makefile b/drivers/accel/Makefile
> index ab3df932937f..117844f94fc9 100644
> --- a/drivers/accel/Makefile
> +++ b/drivers/accel/Makefile
> @@ -3,3 +3,4 @@
> obj-$(CONFIG_DRM_ACCEL_HABANALABS) += habanalabs/
> obj-$(CONFIG_DRM_ACCEL_IVPU) += ivpu/
> obj-$(CONFIG_DRM_ACCEL_QAIC) += qaic/
> +obj-$(CONFIG_DRM_ACCEL_ROCKET) += rocket/
> \ No newline at end of file
> diff --git a/drivers/accel/rocket/Kconfig b/drivers/accel/rocket/Kconfig
> new file mode 100644
> index 000000000000..d50eaabb42cb
> --- /dev/null
> +++ b/drivers/accel/rocket/Kconfig
> @@ -0,0 +1,13 @@
> +# SPDX-License-Identifier: GPL-2.0
> +
> +config DRM_ACCEL_ROCKET
> + tristate "Rocket (DRM support for Rockchip NPUs)"
> + depends on DRM
> + depends on ARM64 || COMPILE_TEST
> + depends on MMU
> + select DRM_SCHED
> + select IOMMU_SUPPORT
> + select IOMMU_IO_PGTABLE_LPAE
> + select DRM_GEM_SHMEM_HELPER
> + help
> + DRM driver for Rockchip NPUs.
This is way too short. At a minimum what is the module called?
> diff --git a/drivers/accel/rocket/Makefile b/drivers/accel/rocket/Makefile
> new file mode 100644
> index 000000000000..73a7280d260c
> --- /dev/null
> +++ b/drivers/accel/rocket/Makefile
> @@ -0,0 +1,8 @@
> +# SPDX-License-Identifier: GPL-2.0
> +
> +obj-$(CONFIG_DRM_ACCEL_ROCKET) := rocket.o
> +
> +rocket-y := \
> + rocket_core.o \
> + rocket_device.o \
> + rocket_drv.o
> diff --git a/drivers/accel/rocket/rocket_core.c b/drivers/accel/rocket/rocket_core.c
> new file mode 100644
> index 000000000000..d6680b00fb2f
> --- /dev/null
> +++ b/drivers/accel/rocket/rocket_core.c
> @@ -0,0 +1,149 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/* Copyright 2024 Tomeu Vizoso <tomeu at tomeuvizoso.net> */
> +
> +#include <asm-generic/delay.h>
Really? You need to go down into the asm specific headers? That seems
wrong.
> +#include <linux/err.h>
> +#include <linux/clk.h>
"c" comes before "e" in the English alphabet.
> +#include <linux/device.h>
> +#include <linux/platform_device.h>
> +#include <linux/pm_domain.h>
> +#include <linux/reset.h>
> +
> +#include "rocket_core.h"
> +#include "rocket_device.h"
> +#include "rocket_registers.h"
> +
> +static int rocket_clk_init(struct rocket_core *core)
> +{
> + struct rocket_device *rdev = core->dev;
> + int err;
> +
> + core->a_clk = devm_clk_get_enabled(rdev->dev, rdev->comp->clocks_a_names[core->index]);
> + if (IS_ERR(core->a_clk)) {
> + err = PTR_ERR(core->a_clk);
> + dev_err(rdev->dev, "devm_clk_get_enabled failed %d for core %d\n", err, core->index);
> + return err;
> + }
> +
> + core->h_clk = devm_clk_get_enabled(rdev->dev, rdev->comp->clocks_h_names[core->index]);
> + if (IS_ERR(core->h_clk)) {
> + err = PTR_ERR(core->h_clk);
> + dev_err(rdev->dev, "devm_clk_get_enabled failed %d for core %d\n", err, core->index);
> + clk_disable_unprepare(core->a_clk);
> + return err;
> + }
> +
> + return 0;
> +}
> +
> +static int rocket_reset_init(struct rocket_core *core)
> +{
> + struct rocket_device *rdev = core->dev;
> + struct reset_control *a_reset = NULL;
> + struct reset_control *h_reset = NULL;
> +
> + a_reset = devm_reset_control_get(
> + rdev->dev,
> + rdev->comp->resets_a_names[core->index]);
This fits on one line, why break it up?
> + if (IS_ERR(a_reset))
> + return PTR_ERR(a_reset);
> +
> + core->a_reset = a_reset;
> +
> + h_reset = devm_reset_control_get(
> + rdev->dev,
> + rdev->comp->resets_h_names[core->index]);
Same comment.
> + if (IS_ERR(h_reset))
> + return PTR_ERR(h_reset);
> +
> + core->h_reset = h_reset;
> +
> + return 0;
> +}
> +
> +static int rocket_pmdomain_init(struct rocket_core *core)
> +{
> + struct rocket_device *rdev = core->dev;
> + const char *pm_domain_name = rdev->comp->pm_domain_names[core->index];
Seems a bit weird to break reverse christmas tree.
> + int err = 0;
> +
> + core->pm_domain = dev_pm_domain_attach_by_name(rdev->dev, pm_domain_name);
> + if (IS_ERR_OR_NULL(core->pm_domain)) {
> + err = PTR_ERR(core->pm_domain) ? : -ENODATA;
> + core->pm_domain = NULL;
> + dev_err(rdev->dev,
> + "failed to get pm-domain %s(%d): %d\n",
> + pm_domain_name, core->index, err);
> + return err;
> + }
> +
> + core->pm_domain_link = device_link_add(rdev->dev,
> + core->pm_domain,
> + DL_FLAG_PM_RUNTIME | DL_FLAG_STATELESS | DL_FLAG_RPM_ACTIVE);
> + if (!core->pm_domain_link) {
> + dev_err(core->pm_domain, "adding device link failed!\n");
> + dev_pm_domain_detach(core->pm_domain, true);
> + return -ENODEV;
> + }
> +
> + return err;
> +}
> +
> +static void rocket_pmdomain_fini(struct rocket_core *core)
> +{
> + dev_pm_domain_detach(core->pm_domain, true);
> +}
> +
> +int rocket_core_init(struct rocket_core *core)
> +{
> + struct rocket_device *rdev = core->dev;
> + uint32_t version;
> + int err = 0;
> +
> + err = rocket_clk_init(core);
> + if (err) {
> + dev_err(rdev->dev, "clk init failed %d\n", err);
> + return err;
> + }
> +
> + err = rocket_reset_init(core);
> + if (err) {
> + dev_err(rdev->dev, "reset init failed %d\n", err);
> + return err;
> + }
> +
> + err = rocket_pmdomain_init(core);
> + if (err < 0)
> + return err;
> +
> + core->iomem = devm_platform_ioremap_resource(rdev->pdev, core->index);
> + if (IS_ERR(core->iomem)) {
> + err = PTR_ERR(core->iomem);
> + goto out_pm_domain;
> + }
> +
> + version = rocket_read(core, REG_PC_VERSION) + (rocket_read(core, REG_PC_VERSION_NUM) & 0xffff);
> + dev_info(rdev->dev, "Rockchip NPU core %d version: %d\n", core->index, version);
A properly working driver should be silent by default.
> +
> + return 0;
> +
> +out_pm_domain:
> + rocket_pmdomain_fini(core);
> + return err;
> +}
> +
> +void rocket_core_fini(struct rocket_core *core)
> +{
> + rocket_pmdomain_fini(core);
> +}
> +
> +void rocket_core_reset(struct rocket_core *core)
> +{
> + reset_control_assert(core->a_reset);
> + reset_control_assert(core->h_reset);
> +
> + udelay(10);
Why?
> +
> + reset_control_deassert(core->a_reset);
> + reset_control_deassert(core->h_reset);
> +}
> diff --git a/drivers/accel/rocket/rocket_core.h b/drivers/accel/rocket/rocket_core.h
> new file mode 100644
> index 000000000000..e5d4c848c9f4
> --- /dev/null
> +++ b/drivers/accel/rocket/rocket_core.h
> @@ -0,0 +1,32 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +/* Copyright 2024 Tomeu Vizoso <tomeu at tomeuvizoso.net> */
> +
> +#ifndef __ROCKET_CORE_H__
> +#define __ROCKET_CORE_H__
> +
> +#include <linux/mutex_types.h>
> +#include <asm/io.h>
> +#include <asm-generic/io.h>
Again, asm specific includes?
> +#define rocket_read(core, reg) readl((core)->iomem + (reg))
> +#define rocket_write(core, reg, value) writel(value, (core)->iomem + (reg))
> +
> +struct rocket_core {
> + struct rocket_device *dev;
> + unsigned int index;
> +
> + struct reset_control *a_reset;
> + struct reset_control *h_reset;
> + void __iomem *iomem;
> + int irq;
What does pahole say about this?
> + struct clk *a_clk;
> + struct clk *h_clk;
> + struct device *pm_domain;
> + struct device_link *pm_domain_link;
> +};
> +
> +int rocket_core_init(struct rocket_core *core);
> +void rocket_core_fini(struct rocket_core *core);
> +void rocket_core_reset(struct rocket_core *core);
> +
> +#endif
> \ No newline at end of file
> diff --git a/drivers/accel/rocket/rocket_device.c b/drivers/accel/rocket/rocket_device.c
> new file mode 100644
> index 000000000000..3bd23f22d06a
> --- /dev/null
> +++ b/drivers/accel/rocket/rocket_device.c
> @@ -0,0 +1,37 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/* Copyright 2024 Tomeu Vizoso <tomeu at tomeuvizoso.net> */
> +
> +#include <linux/clk.h>
> +#include <linux/pm_runtime.h>
> +
> +#include "rocket_drv.h"
> +#include "rocket_device.h"
> +
> +int rocket_device_init(struct rocket_device *rdev)
> +{
> + int core, err;
> +
> + rdev->clk_npu = devm_clk_get_enabled(rdev->dev, "clk_npu");
> + rdev->pclk = devm_clk_get_enabled(rdev->dev, "pclk");
> +
> + for (core = 0; core < rdev->comp->num_cores; core++) {
> + rdev->cores[core].dev = rdev;
> + rdev->cores[core].index = core;
> +
> + err = rocket_core_init(&rdev->cores[core]);
> + if (err) {
> + rocket_device_fini(rdev);
> + return err;
> + }
> + }
> +
> + return 0;
> +}
> +
> +void rocket_device_fini(struct rocket_device *rdev)
> +{
> + int core;
> +
> + for (core = 0; core < rdev->comp->num_cores; core++)
> + rocket_core_fini(&rdev->cores[core]);
> +}
> diff --git a/drivers/accel/rocket/rocket_device.h b/drivers/accel/rocket/rocket_device.h
> new file mode 100644
> index 000000000000..6765d944a2c8
> --- /dev/null
> +++ b/drivers/accel/rocket/rocket_device.h
> @@ -0,0 +1,38 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +/* Copyright 2024 Tomeu Vizoso <tomeu at tomeuvizoso.net> */
> +
> +#ifndef __ROCKET_DEVICE_H__
> +#define __ROCKET_DEVICE_H__
> +
> +#include "rocket_core.h"
> +
> +#define MAX_NUM_CORES 3
> +
> +struct rocket_compatible {
> + int num_cores;
> + const char * const *resets_a_names;
> + const char * const *resets_h_names;
> + const char * const *clocks_a_names;
> + const char * const *clocks_h_names;
> + const char * const *pm_domain_names;
> + const char * const *irq_names;
> +};
> +
> +struct rocket_device {
> + struct device *dev;
> + struct drm_device *ddev;
> + struct platform_device *pdev;
> +
> + const struct rocket_compatible *comp;
> +
> + struct rocket_core cores[MAX_NUM_CORES];
> +
> + struct clk *clk_npu;
> + struct clk *pclk;
> +};
> +
> +int rocket_device_init(struct rocket_device *rdev);
> +void rocket_device_fini(struct rocket_device *rdev);
> +void rocket_device_reset(struct rocket_device *rdev);
> +
> +#endif
> diff --git a/drivers/accel/rocket/rocket_drv.c b/drivers/accel/rocket/rocket_drv.c
> new file mode 100644
> index 000000000000..e339c337fcf9
> --- /dev/null
> +++ b/drivers/accel/rocket/rocket_drv.c
> @@ -0,0 +1,221 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/* Copyright 2024 Tomeu Vizoso <tomeu at tomeuvizoso.net> */
> +
> +#include "linux/clk.h"
> +#include "linux/dma-mapping.h"
Use of "" includes can't be right...
> +#include <linux/of.h>
> +#include <linux/module.h>
> +#include <linux/platform_device.h>
> +#include <linux/pm_runtime.h>
> +#include <drm/drm_drv.h>
> +#include <drm/drm_ioctl.h>
> +#include <drm/drm_accel.h>
Broken alphabetical order.
> +#include <drm/drm_gem.h>
> +
> +#include "rocket_drv.h"
> +#include "rocket_device.h"
> +
> +static const char * const rk3588_pm_domains[] = { "npu0", "npu1", "npu2" };
> +static const char * const rk3588_resets_a[] = { "srst_a0", "srst_a1", "srst_a2" };
> +static const char * const rk3588_resets_h[] = { "srst_h0", "srst_h1", "srst_h2" };
> +static const char * const rk3588_clocks_a[] = { "aclk0", "aclk1", "aclk2" };
> +static const char * const rk3588_clocks_h[] = { "hclk0", "hclk1", "hclk2" };
> +static const char * const rk3588_irqs[] = { "npu0_irq", "npu1_irq", "npu2_irq" };
> +static const struct rocket_compatible rk3588_data = {
> + .num_cores = ARRAY_SIZE(rk3588_pm_domains),
> + .pm_domain_names = rk3588_pm_domains,
> + .resets_a_names = rk3588_resets_a,
> + .resets_h_names = rk3588_resets_h,
> + .clocks_a_names = rk3588_clocks_a,
> + .clocks_h_names = rk3588_clocks_h,
> + .irq_names = rk3588_irqs,
> +};
> +
> +static int
> +rocket_open(struct drm_device *dev, struct drm_file *file)
> +{
> + struct rocket_device *rdev = dev->dev_private;
> + struct rocket_file_priv *rocket_priv;
> +
> + rocket_priv = kzalloc(sizeof(*rocket_priv), GFP_KERNEL);
> + if (!rocket_priv)
> + return -ENOMEM;
> +
> + rocket_priv->rdev = rdev;
> + file->driver_priv = rocket_priv;
> +
> + return 0;
> +}
> +
> +static void
> +rocket_postclose(struct drm_device *dev, struct drm_file *file)
> +{
> + struct rocket_file_priv *rocket_priv = file->driver_priv;
> +
> + kfree(rocket_priv);
> +}
> +
> +static const struct drm_ioctl_desc rocket_drm_driver_ioctls[] = {
> +#define ROCKET_IOCTL(n, func) \
> + DRM_IOCTL_DEF_DRV(ROCKET_##n, rocket_ioctl_##func, 0)
> +};
> +
> +static const struct file_operations rocket_drm_driver_fops = {
> + .owner = THIS_MODULE,
This is weird. I'd expect a use of DEFINE_DRM_ACCEL_FOPS()
Are you sure you need to explictly set .owner? Thats been stripped out
of the kernel as far as I've seen.
> + DRM_ACCEL_FOPS,
> +};
> +
> +/*
> + * Rocket driver version:
> + * - 1.0 - initial interface
> + */
> +static const struct drm_driver rocket_drm_driver = {
> + .driver_features = DRIVER_COMPUTE_ACCEL,
> + .open = rocket_open,
> + .postclose = rocket_postclose,
> + .ioctls = rocket_drm_driver_ioctls,
> + .num_ioctls = ARRAY_SIZE(rocket_drm_driver_ioctls),
> + .fops = &rocket_drm_driver_fops,
> + .name = "rocket",
> + .desc = "rocket DRM",
> + .date = "20240521",
> + .major = 1,
> + .minor = 0,
Major, minor has been deprecated. Pretty sure the data is being phased
out right now if it hasn't been already.
> +};
> +
> +static int rocket_probe(struct platform_device *pdev)
> +{
> + struct rocket_device *rdev;
> + struct drm_device *ddev;
> + int err;
> +
> + BUILD_BUG_ON(rk3588_data.num_cores > MAX_NUM_CORES);
> +
> + rdev = devm_kzalloc(&pdev->dev, sizeof(*rdev), GFP_KERNEL);
> + if (!rdev)
> + return -ENOMEM;
> +
> + rdev->pdev = pdev;
> + rdev->dev = &pdev->dev;
> +
> + platform_set_drvdata(pdev, rdev);
> +
> + rdev->comp = of_device_get_match_data(&pdev->dev);
> + if (!rdev->comp)
> + return -ENODEV;
> +
> + /* Allocate and initialize the DRM device. */
Doesn't seem like this comment provides any value since it just
reiterates what the code is.
> + ddev = drm_dev_alloc(&rocket_drm_driver, &pdev->dev);
Why not devm_drm_dev_alloc()?
> + if (IS_ERR(ddev))
> + return PTR_ERR(ddev);
> +
> + ddev->dev_private = rdev;
> + rdev->ddev = ddev;
> +
> + err = dma_set_mask_and_coherent(rdev->ddev->dev, DMA_BIT_MASK(40));
> + if (err)
> + goto err_drm_dev;
> +
> + err = rocket_device_init(rdev);
> + if (err) {
> + if (err != -EPROBE_DEFER)
> + dev_err(&pdev->dev, "Fatal error during NPU init\n");
Isn't there an EPROBE_DEFER helper for this usecase?
> + goto err_drm_dev;
> + }
> +
> + pm_runtime_use_autosuspend(rdev->dev);
> + pm_runtime_set_autosuspend_delay(rdev->dev, 50); /* ~3 frames */
> + pm_runtime_set_active(rdev->dev);
> + pm_runtime_enable(rdev->dev);
> + pm_runtime_mark_last_busy(rdev->dev);
> +
> + /*
> + * Register the DRM device with the core and the connectors with
> + * sysfs
> + */
Another no-value comment.
> + err = drm_dev_register(ddev, 0);
> + if (err < 0)
> + goto err_pm_runtime;
> +
> + return 0;
> +
> +err_pm_runtime:
> + pm_runtime_disable(rdev->dev);
> + rocket_device_fini(rdev);
> + pm_runtime_set_suspended(rdev->dev);
> +err_drm_dev:
> + drm_dev_put(ddev);
> + return err;
> +}
> +
> +static void rocket_remove(struct platform_device *pdev)
> +{
> + struct rocket_device *rdev = platform_get_drvdata(pdev);
> + struct drm_device *ddev = rdev->ddev;
> +
> + drm_dev_unregister(ddev);
> +
> + pm_runtime_disable(rdev->dev);
> + rocket_device_fini(rdev);
> + pm_runtime_set_suspended(rdev->dev);
> +
> + drm_dev_put(ddev);
> +}
> +
> +static const struct of_device_id dt_match[] = {
> + { .compatible = "rockchip,rk3588-rknn", .data = &rk3588_data, },
> + {}
> +};
> +MODULE_DEVICE_TABLE(of, dt_match);
> +
> +static int rocket_device_runtime_resume(struct device *dev)
> +{
> + struct rocket_device *rdev = dev_get_drvdata(dev);
> + int core;
> +
> + clk_prepare_enable(rdev->clk_npu);
> + clk_prepare_enable(rdev->pclk);
> +
> + for (core = 0; core < rdev->comp->num_cores; core++) {
> + clk_prepare_enable(rdev->cores[core].a_clk);
> + clk_prepare_enable(rdev->cores[core].h_clk);
> + }
> +
> + return 0;
> +}
> +
> +static int rocket_device_runtime_suspend(struct device *dev)
> +{
> + struct rocket_device *rdev = dev_get_drvdata(dev);
> + int core;
> +
> + for (core = 0; core < rdev->comp->num_cores; core++) {
> + clk_disable_unprepare(rdev->cores[core].a_clk);
> + clk_disable_unprepare(rdev->cores[core].h_clk);
> + }
> +
> + clk_disable_unprepare(rdev->pclk);
> + clk_disable_unprepare(rdev->clk_npu);
> +
> + return 0;
> +}
> +
> +EXPORT_GPL_DEV_PM_OPS(rocket_pm_ops) = {
> + RUNTIME_PM_OPS(rocket_device_runtime_suspend, rocket_device_runtime_resume, NULL)
> + SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, pm_runtime_force_resume)
> +};
> +
> +static struct platform_driver rocket_driver = {
> + .probe = rocket_probe,
> + .remove_new = rocket_remove,
> + .driver = {
> + .name = "rocket",
> + .pm = pm_ptr(&rocket_pm_ops),
> + .of_match_table = dt_match,
> + },
> +};
> +module_platform_driver(rocket_driver);
> +
> +MODULE_LICENSE("GPL v2");
"GPL v2" is invalid. Did you run checkpatch?
> +MODULE_DESCRIPTION("DRM driver for the Rockchip NPU IP");
> +MODULE_AUTHOR("Tomeu Vizoso");
> diff --git a/drivers/accel/rocket/rocket_drv.h b/drivers/accel/rocket/rocket_drv.h
> new file mode 100644
> index 000000000000..e1d9407c46d7
> --- /dev/null
> +++ b/drivers/accel/rocket/rocket_drv.h
> @@ -0,0 +1,13 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +/* Copyright 2024 Tomeu Vizoso <tomeu at tomeuvizoso.net> */
> +
> +#ifndef __ROCKET_DRV_H__
> +#define __ROCKET_DRV_H__
> +
> +#include <linux/io.h>
Why? Doesn't look like this file uses this. However, no include for
struct rocket_device either...
> +
> +struct rocket_file_priv {
> + struct rocket_device *rdev;
> +};
> +
> +#endif
> diff --git a/drivers/accel/rocket/rocket_registers.h b/drivers/accel/rocket/rocket_registers.h
> new file mode 100644
> index 000000000000..9043fa922db5
> --- /dev/null
> +++ b/drivers/accel/rocket/rocket_registers.h
> @@ -0,0 +1,4449 @@
> +#ifndef REGISTERS_XML
> +#define REGISTERS_XML
> +
> +/* Autogenerated file, DO NOT EDIT manually!
> +
> +This file was generated by the rules-ng-ng gen_header.py tool in this git repository:
> +http://gitlab.freedesktop.org/mesa/mesa/
> +git clone https://gitlab.freedesktop.org/mesa/mesa.git
> +
> +The rules-ng-ng source files this header was generated from are:
> +
> +- /home/tomeu/src/mesa/src/gallium/drivers/rocket/registers.xml ( 60076 bytes, from Wed Jun 12 10:02:25 2024)
> +
> +Copyright (C) 2024-2024 by the following authors:
Just checking, is the date range autogenerated? 2024-2024 is not
correct per anything I've seen...
> diff --git a/include/uapi/drm/rocket_accel.h b/include/uapi/drm/rocket_accel.h
> new file mode 100644
> index 000000000000..7a179731ffe4
> --- /dev/null
> +++ b/include/uapi/drm/rocket_accel.h
> @@ -0,0 +1,19 @@
> +/* SPDX-License-Identifier: MIT */
> +/*
> + * Copyright © 2024 Tomeu Vizoso
Why the copyright symbol?
> + */
> +#ifndef _ROCKET_DRM_H_
> +#define _ROCKET_DRM_H_
> +
> +#include "drm.h"
> +
> +#if defined(__cplusplus)
> +extern "C" {
> +#endif
> +
> +
> +#if defined(__cplusplus)
> +}
> +#endif
> +
> +#endif /* _ROCKET_DRM_H_ */
>
Eh, feels like this could/should be moved later in the series since
there is no content.
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