[PATCH v5 05/10] gna: add GNA_GET_PARAMETER ioctl
Maciej Kwapulinski
maciej.kwapulinski at linux.intel.com
Thu Oct 20 17:53:29 UTC 2022
From: Tomasz Jankowski <tomasz1.jankowski at intel.com>
As this is first ioctl in the series, the patch also adds common bits for
remaining ioctls
Signed-off-by: Tomasz Jankowski <tomasz1.jankowski at intel.com>
Tested-by: Mikolaj Grzybowski <mikolajx.grzybowski at intel.com>
Co-developed-by: Jianxun Zhang <jianxun.zhang at linux.intel.com>
Signed-off-by: Jianxun Zhang <jianxun.zhang at linux.intel.com>
Co-developed-by: Maciej Kwapulinski <maciej.kwapulinski at linux.intel.com>
Signed-off-by: Maciej Kwapulinski <maciej.kwapulinski at linux.intel.com>
---
MAINTAINERS | 1 +
drivers/gpu/drm/gna/Kbuild | 2 +-
drivers/gpu/drm/gna/Kconfig | 3 +-
drivers/gpu/drm/gna/gna_device.c | 58 ++++++++++++++++++++++++++++++++
drivers/gpu/drm/gna/gna_device.h | 14 ++++++++
drivers/gpu/drm/gna/gna_ioctl.c | 18 ++++++++++
include/uapi/drm/gna_drm.h | 40 ++++++++++++++++++++++
7 files changed, 134 insertions(+), 2 deletions(-)
create mode 100644 drivers/gpu/drm/gna/gna_ioctl.c
create mode 100644 include/uapi/drm/gna_drm.h
diff --git a/MAINTAINERS b/MAINTAINERS
index d5b966c00155..458ee5ad765d 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -10179,6 +10179,7 @@ M: Maciej Kwapulinski <maciej.kwapulinski at linux.intel.com>
S: Maintained
F: Documentation/gpu/gna.rst
F: drivers/gpu/drm/gna/*
+F: include/uapi/drm/gna_drm.h
INTEL GPIO DRIVERS
M: Andy Shevchenko <andy at kernel.org>
diff --git a/drivers/gpu/drm/gna/Kbuild b/drivers/gpu/drm/gna/Kbuild
index 2bda61c61f45..101880869dc4 100644
--- a/drivers/gpu/drm/gna/Kbuild
+++ b/drivers/gpu/drm/gna/Kbuild
@@ -1,5 +1,5 @@
# SPDX-License-Identifier: GPL-2.0-only
-gna-y := gna_device.o gna_mem.o gna_pci.o
+gna-y := gna_device.o gna_ioctl.o gna_mem.o gna_pci.o
obj-$(CONFIG_DRM_GNA) += gna.o
diff --git a/drivers/gpu/drm/gna/Kconfig b/drivers/gpu/drm/gna/Kconfig
index 820dc8424045..e56b933458dc 100644
--- a/drivers/gpu/drm/gna/Kconfig
+++ b/drivers/gpu/drm/gna/Kconfig
@@ -9,5 +9,6 @@ config DRM_GNA
help
This option enables the Intel(R) Gaussian & Neural Accelerator
(Intel(R) GNA) driver: gna
- Information about functionality is in
+ User space interface is defined in include/uapi/drm/gna_drm.h, while
+ information about functionality is in
Documentation/gpu/gna.rst
diff --git a/drivers/gpu/drm/gna/gna_device.c b/drivers/gpu/drm/gna/gna_device.c
index f1724cbe3963..592478bca526 100644
--- a/drivers/gpu/drm/gna/gna_device.c
+++ b/drivers/gpu/drm/gna/gna_device.c
@@ -3,13 +3,22 @@
#include <drm/drm_drv.h>
#include <drm/drm_file.h>
+#include <drm/drm_ioctl.h>
#include <drm/drm_managed.h>
#include <linux/device.h>
#include <linux/dma-mapping.h>
#include <linux/module.h>
+#include <uapi/drm/gna_drm.h>
+
#include "gna_device.h"
+#define GNA_DDI_VERSION_CURRENT GNA_DDI_VERSION_3
+
+static const struct drm_ioctl_desc gna_drm_ioctls[] = {
+ DRM_IOCTL_DEF_DRV(GNA_GET_PARAMETER, gna_getparam_ioctl, DRM_RENDER_ALLOW),
+};
+
static void gna_drm_dev_fini(struct drm_device *dev, void *ptr)
{
@@ -29,6 +38,8 @@ static int gna_drm_dev_init(struct drm_device *dev)
static const struct drm_driver gna_drm_driver = {
.driver_features = DRIVER_RENDER,
+ .ioctls = gna_drm_ioctls,
+ .num_ioctls = ARRAY_SIZE(gna_drm_ioctls),
.name = DRIVER_NAME,
.desc = DRIVER_DESC,
@@ -50,6 +61,7 @@ int gna_probe(struct device *parent, struct gna_dev_info *dev_info, void __iomem
return PTR_ERR(gna_priv);
drm_dev = &gna_priv->drm;
+ gna_priv->recovery_timeout_jiffies = msecs_to_jiffies(60*1000);
gna_priv->iobase = iobase;
gna_priv->info = *dev_info;
@@ -79,6 +91,52 @@ int gna_probe(struct device *parent, struct gna_dev_info *dev_info, void __iomem
return 0;
}
+static u32 gna_device_type_by_hwid(u32 hwid)
+{
+ switch (hwid) {
+ case GNA_DEV_HWID_CNL:
+ return GNA_DEV_TYPE_0_9;
+ case GNA_DEV_HWID_GLK:
+ case GNA_DEV_HWID_EHL:
+ case GNA_DEV_HWID_ICL:
+ return GNA_DEV_TYPE_1_0;
+ case GNA_DEV_HWID_JSL:
+ case GNA_DEV_HWID_TGL:
+ case GNA_DEV_HWID_RKL:
+ return GNA_DEV_TYPE_2_0;
+ case GNA_DEV_HWID_ADL:
+ case GNA_DEV_HWID_RPL:
+ return GNA_DEV_TYPE_3_0;
+ case GNA_DEV_HWID_MTL:
+ return GNA_DEV_TYPE_3_5;
+ default:
+ return 0;
+ }
+}
+
+int gna_getparam(struct gna_device *gna_priv, union gna_parameter *param)
+{
+ switch (param->in.id) {
+ case GNA_PARAM_RECOVERY_TIMEOUT:
+ param->out.value = jiffies_to_msecs(gna_priv->recovery_timeout_jiffies) / 1000;
+ break;
+ case GNA_PARAM_INPUT_BUFFER_S:
+ param->out.value = gna_priv->hw_info.in_buf_s;
+ break;
+ case GNA_PARAM_DEVICE_TYPE:
+ param->out.value = gna_device_type_by_hwid(gna_priv->info.hwid);
+ break;
+ case GNA_PARAM_DDI_VERSION:
+ param->out.value = GNA_DDI_VERSION_CURRENT;
+ break;
+ default:
+ dev_dbg(gna_dev(gna_priv), "unknown parameter id: %llu\n", param->in.id);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
MODULE_AUTHOR("Intel Corporation");
MODULE_DESCRIPTION("Intel(R) Gaussian & Neural Accelerator (Intel(R) GNA) Driver");
MODULE_LICENSE("GPL");
diff --git a/drivers/gpu/drm/gna/gna_device.h b/drivers/gpu/drm/gna/gna_device.h
index d2357954b245..035c627e33b7 100644
--- a/drivers/gpu/drm/gna/gna_device.h
+++ b/drivers/gpu/drm/gna/gna_device.h
@@ -20,11 +20,15 @@
#define DRIVER_MINOR 0
#define DRIVER_PATCHLEVEL 0
+union gna_parameter;
+struct drm_file;
struct device;
struct gna_device {
struct drm_device drm;
+ int recovery_timeout_jiffies;
+
/* device related resources */
void __iomem *iobase;
struct gna_dev_info info;
@@ -34,6 +38,11 @@ struct gna_device {
};
int gna_probe(struct device *parent, struct gna_dev_info *dev_info, void __iomem *iobase);
+int gna_getparam(struct gna_device *gna_priv, union gna_parameter *param);
+
+int gna_getparam_ioctl(struct drm_device *dev, void *data,
+ struct drm_file *file);
+
static inline u32 gna_reg_read(struct gna_device *gna_priv, u32 reg)
{
return readl(gna_priv->iobase + reg);
@@ -44,4 +53,9 @@ static inline struct device *gna_dev(struct gna_device *gna_priv)
return gna_priv->drm.dev;
}
+static inline struct gna_device *to_gna_device(struct drm_device *dev)
+{
+ return container_of(dev, struct gna_device, drm);
+}
+
#endif /* __GNA_DEVICE_H__ */
diff --git a/drivers/gpu/drm/gna/gna_ioctl.c b/drivers/gpu/drm/gna/gna_ioctl.c
new file mode 100644
index 000000000000..21eb7aae4ad2
--- /dev/null
+++ b/drivers/gpu/drm/gna/gna_ioctl.c
@@ -0,0 +1,18 @@
+// SPDX-License-Identifier: GPL-2.0-only
+// Copyright(c) 2017-2022 Intel Corporation
+
+#include <drm/drm_device.h>
+#include <drm/drm_file.h>
+
+#include <uapi/drm/gna_drm.h>
+
+#include "gna_device.h"
+
+int gna_getparam_ioctl(struct drm_device *dev, void *data,
+ struct drm_file *file)
+{
+ struct gna_device *gna_priv = to_gna_device(dev);
+ union gna_parameter *param = data;
+
+ return gna_getparam(gna_priv, param);
+}
diff --git a/include/uapi/drm/gna_drm.h b/include/uapi/drm/gna_drm.h
new file mode 100644
index 000000000000..5a7cfd7e5df2
--- /dev/null
+++ b/include/uapi/drm/gna_drm.h
@@ -0,0 +1,40 @@
+/* SPDX-License-Identifier: GPL-2.0-only WITH Linux-syscall-note */
+/* Copyright(c) 2017-2022 Intel Corporation */
+
+#ifndef _GNA_DRM_H_
+#define _GNA_DRM_H_
+
+#include <linux/types.h>
+
+#include "drm.h"
+
+#define GNA_DDI_VERSION_3 3
+
+#define GNA_PARAM_RECOVERY_TIMEOUT 1
+#define GNA_PARAM_DEVICE_TYPE 2
+#define GNA_PARAM_INPUT_BUFFER_S 3
+#define GNA_PARAM_DDI_VERSION 4
+
+#define GNA_DEV_TYPE_0_9 0x09
+#define GNA_DEV_TYPE_1_0 0x10
+#define GNA_DEV_TYPE_2_0 0x20
+#define GNA_DEV_TYPE_3_0 0x30
+#define GNA_DEV_TYPE_3_5 0x35
+
+typedef __u64 gna_param_id;
+
+union gna_parameter {
+ struct {
+ gna_param_id id;
+ } in;
+
+ struct {
+ __u64 value;
+ } out;
+};
+
+#define DRM_GNA_GET_PARAMETER 0x00
+
+#define DRM_IOCTL_GNA_GET_PARAMETER DRM_IOWR(DRM_COMMAND_BASE + DRM_GNA_GET_PARAMETER, union gna_parameter)
+
+#endif /* _GNA_DRM_H_ */
--
2.25.1
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