From 9471a274803accb273ea22b37087e269c3d52549 Mon Sep 17 00:00:00 2001 From: Marek Vasut Date: Sat, 18 Oct 2025 15:00:58 +0200 Subject: dt-bindings: gpu: img,powervr-rogue: Drop useless power domains items The power-domains items: list is not very informative, replace it with plain minItems/maxItems instead. Signed-off-by: Marek Vasut Acked-by: Conor Dooley Reviewed-by: Matt Coster Link: https://lore.kernel.org/r/20251018130147.12831-1-marek.vasut+renesas@mailbox.org Signed-off-by: Matt Coster --- Documentation/devicetree/bindings/gpu/img,powervr-rogue.yaml | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) diff --git a/Documentation/devicetree/bindings/gpu/img,powervr-rogue.yaml b/Documentation/devicetree/bindings/gpu/img,powervr-rogue.yaml index c87d7bece0ec..bee4ab1a1f80 100644 --- a/Documentation/devicetree/bindings/gpu/img,powervr-rogue.yaml +++ b/Documentation/devicetree/bindings/gpu/img,powervr-rogue.yaml @@ -90,8 +90,7 @@ allOf: then: properties: power-domains: - items: - - description: Power domain A + maxItems: 1 power-domain-names: maxItems: 1 required: @@ -125,9 +124,7 @@ allOf: then: properties: power-domains: - items: - - description: Power domain A - - description: Power domain B + minItems: 2 power-domain-names: minItems: 2 required: -- cgit From c1a7cc00cd412505e070eb4e62bc0b0ca85243e0 Mon Sep 17 00:00:00 2001 From: Marek Vasut Date: Sat, 18 Oct 2025 15:00:59 +0200 Subject: dt-bindings: gpu: img,powervr-rogue: Rework the allOf section Rework the current allOf: section such that all handling of clocks/clock-names properties happens first, and all handling of power-domains/power-domain-names happens second. This allows the allOf section to limit various GPU models to matching clocks count in the first half, and apply the same for power-domains count in the second half, without conflating the two limits together. This makes addition of GPU models with different clocks and power-domains count easier. No functional change intended. Signed-off-by: Marek Vasut Acked-by: Conor Dooley Reviewed-by: Matt Coster Link: https://lore.kernel.org/r/20251018130147.12831-2-marek.vasut+renesas@mailbox.org Signed-off-by: Matt Coster --- .../devicetree/bindings/gpu/img,powervr-rogue.yaml | 40 +++++++++++++--------- 1 file changed, 24 insertions(+), 16 deletions(-) diff --git a/Documentation/devicetree/bindings/gpu/img,powervr-rogue.yaml b/Documentation/devicetree/bindings/gpu/img,powervr-rogue.yaml index bee4ab1a1f80..829febd8e0f4 100644 --- a/Documentation/devicetree/bindings/gpu/img,powervr-rogue.yaml +++ b/Documentation/devicetree/bindings/gpu/img,powervr-rogue.yaml @@ -86,16 +86,13 @@ allOf: properties: compatible: contains: - const: img,img-axe-1-16m + enum: + - ti,am62-gpu + - ti,j721s2-gpu then: properties: - power-domains: - maxItems: 1 - power-domain-names: + clocks: maxItems: 1 - required: - - power-domains - - power-domain-names - if: properties: @@ -108,13 +105,21 @@ allOf: minItems: 3 clock-names: minItems: 3 + + - if: + properties: + compatible: + contains: + const: img,img-axe-1-16m + then: + properties: power-domains: - items: - - description: The single, unified power domain for the GPU on the - TH1520 SoC, integrating all internal IP power domains. - power-domain-names: false + maxItems: 1 + power-domain-names: + maxItems: 1 required: - power-domains + - power-domain-names - if: properties: @@ -135,13 +140,16 @@ allOf: properties: compatible: contains: - enum: - - ti,am62-gpu - - ti,j721s2-gpu + const: thead,th1520-gpu then: properties: - clocks: - maxItems: 1 + power-domains: + items: + - description: The single, unified power domain for the GPU on the + TH1520 SoC, integrating all internal IP power domains. + power-domain-names: false + required: + - power-domains examples: - | -- cgit From c376a6943741fdb4d782a7cebc8f7408495495ed Mon Sep 17 00:00:00 2001 From: Marek Vasut Date: Thu, 4 Sep 2025 23:01:21 +0200 Subject: dt-bindings: display: bridge: renesas,dsi-csi2-tx: Allow panel@ subnode This controller can have both bridges and panels connected to it. In order to describe panels properly in DT, pull in dsi-controller.yaml and disallow only unevaluatedProperties, because the panel node is optional. Include example binding with panel. Signed-off-by: Marek Vasut Reviewed-by: Neil Armstrong Reviewed-by: Tomi Valkeinen Signed-off-by: Tomi Valkeinen Link: https://lore.kernel.org/r/20250904210147.186728-4-marek.vasut+renesas@mailbox.org --- .../display/bridge/renesas,dsi-csi2-tx.yaml | 53 +++++++++++++++++++++- 1 file changed, 51 insertions(+), 2 deletions(-) diff --git a/Documentation/devicetree/bindings/display/bridge/renesas,dsi-csi2-tx.yaml b/Documentation/devicetree/bindings/display/bridge/renesas,dsi-csi2-tx.yaml index c167795c63f6..51d685ed8289 100644 --- a/Documentation/devicetree/bindings/display/bridge/renesas,dsi-csi2-tx.yaml +++ b/Documentation/devicetree/bindings/display/bridge/renesas,dsi-csi2-tx.yaml @@ -14,6 +14,9 @@ description: | R-Car Gen4 SoCs. The encoder can operate in either DSI or CSI-2 mode, with up to four data lanes. +allOf: + - $ref: /schemas/display/dsi-controller.yaml# + properties: compatible: enum: @@ -80,14 +83,14 @@ required: - resets - ports -additionalProperties: false +unevaluatedProperties: false examples: - | #include #include - dsi0: dsi-encoder@fed80000 { + dsi@fed80000 { compatible = "renesas,r8a779a0-dsi-csi2-tx"; reg = <0xfed80000 0x10000>; power-domains = <&sysc R8A779A0_PD_ALWAYS_ON>; @@ -117,4 +120,50 @@ examples: }; }; }; + + - | + #include + #include + + dsi@fed80000 { + #address-cells = <1>; + #size-cells = <0>; + compatible = "renesas,r8a779g0-dsi-csi2-tx"; + reg = <0xfed80000 0x10000>; + clocks = <&cpg CPG_MOD 415>, + <&cpg CPG_CORE R8A779G0_CLK_DSIEXT>, + <&cpg CPG_CORE R8A779G0_CLK_DSIREF>; + clock-names = "fck", "dsi", "pll"; + power-domains = <&sysc R8A779G0_PD_ALWAYS_ON>; + resets = <&cpg 415>; + + ports { + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + reg = <0>; + }; + + port@1 { + reg = <1>; + + dsi0port1_out: endpoint { + remote-endpoint = <&panel_in>; + data-lanes = <1 2>; + }; + }; + }; + + panel@0 { + reg = <0>; + compatible = "raspberrypi,dsi-7inch"; + + port { + panel_in: endpoint { + remote-endpoint = <&dsi0port1_out>; + }; + }; + }; + }; ... -- cgit From caa2f6ee91d4e2dab39b30de34d2c74b6f45d0a3 Mon Sep 17 00:00:00 2001 From: Chen-Yu Tsai Date: Mon, 20 Oct 2025 12:56:02 +0800 Subject: MAINTAINERS: Update Chen-Yu's email address The email forwarder I'm using has run into severe problems with Gmail lately. Switch over to my kernel.org address for kernel development. Acked-by: Lee Jones Acked-by: Jernej Skrabec Link: https://patch.msgid.link/20251020045603.2573544-1-wens@kernel.org Signed-off-by: Chen-Yu Tsai --- .mailmap | 1 + MAINTAINERS | 8 ++++---- 2 files changed, 5 insertions(+), 4 deletions(-) diff --git a/.mailmap b/.mailmap index d2edd256b19d..fc0d997dd461 100644 --- a/.mailmap +++ b/.mailmap @@ -173,6 +173,7 @@ Carlos Bilbao Changbin Du Chao Yu Chao Yu +Chen-Yu Tsai Chester Lin Chris Chiu Chris Chiu diff --git a/MAINTAINERS b/MAINTAINERS index 6ec9a830e2da..cc8a7f3f1dab 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -2299,7 +2299,7 @@ S: Maintained F: drivers/clk/sunxi/ ARM/Allwinner sunXi SoC support -M: Chen-Yu Tsai +M: Chen-Yu Tsai M: Jernej Skrabec M: Samuel Holland L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers) @@ -7638,7 +7638,7 @@ F: drivers/accel/ F: include/drm/drm_accel.h DRM DRIVER FOR ALLWINNER DE2 AND DE3 ENGINE -M: Chen-Yu Tsai +M: Chen-Yu Tsai R: Jernej Skrabec L: dri-devel@lists.freedesktop.org S: Supported @@ -8252,7 +8252,7 @@ F: drivers/gpu/nova-core/ F: rust/kernel/drm/ DRM DRIVERS FOR ALLWINNER A10 -M: Chen-Yu Tsai +M: Chen-Yu Tsai L: dri-devel@lists.freedesktop.org S: Supported T: git https://gitlab.freedesktop.org/drm/misc/kernel.git @@ -27696,7 +27696,7 @@ F: drivers/acpi/pmic/intel_pmic_xpower.c N: axp288 X-POWERS MULTIFUNCTION PMIC DEVICE DRIVERS -M: Chen-Yu Tsai +M: Chen-Yu Tsai L: linux-kernel@vger.kernel.org S: Maintained N: axp[128] -- cgit From 7e73cefd2bede5408d1aeb6145261b62d85d23be Mon Sep 17 00:00:00 2001 From: Marcus Folkesson Date: Wed, 22 Oct 2025 08:10:57 +0200 Subject: drm/sitronix/st7571-i2c: remove unneeded semicolon Fix style issue reported by Kernel test robot. Reported-by: kernel test robot Closes: https://lore.kernel.org/oe-kbuild-all/202510221125.Cg0sM4xJ-lkp@intel.com/ Reviewed-by: Thomas Zimmermann Signed-off-by: Marcus Folkesson Link: https://lore.kernel.org/r/20251022-st7571-semicolon-v1-1-83d322618ff4@gmail.com --- drivers/gpu/drm/sitronix/st7571-i2c.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/sitronix/st7571-i2c.c b/drivers/gpu/drm/sitronix/st7571-i2c.c index 32b91d65b768..4e73c8b415d6 100644 --- a/drivers/gpu/drm/sitronix/st7571-i2c.c +++ b/drivers/gpu/drm/sitronix/st7571-i2c.c @@ -322,7 +322,7 @@ static void st7571_prepare_buffer_grayscale(struct st7571_device *st7571, size = (rect->x2 - rect->x1) * (rect->y2 - rect->y1) / 4; memcpy(st7571->hwbuf, vmap->vaddr, size); break; - }; + } } static int st7571_fb_update_rect_monochrome(struct drm_framebuffer *fb, struct drm_rect *rect) -- cgit From 7965d1c5354a868063f61eb101f892480ede892f Mon Sep 17 00:00:00 2001 From: José Expósito Date: Thu, 16 Oct 2025 19:56:03 +0200 Subject: drm/vkms: Expose device creation and destruction MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit In preparation for configfs support, expose vkms_create() and vkms_destroy(). Tested-by: Mark Yacoub Reviewed-by: Louis Chauvet Reviewed-by: Harry Wentland Reviewed-by: Luca Ceresoli Co-developed-by: Louis Chauvet Signed-off-by: Louis Chauvet Signed-off-by: José Expósito Link: https://lore.kernel.org/r/20251016175618.10051-2-jose.exposito89@gmail.com Signed-off-by: Luca Ceresoli --- drivers/gpu/drm/vkms/vkms_drv.c | 4 ++-- drivers/gpu/drm/vkms/vkms_drv.h | 20 ++++++++++++++++++++ 2 files changed, 22 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/vkms/vkms_drv.c b/drivers/gpu/drm/vkms/vkms_drv.c index e8472d9b6e3b..78af37c7bd83 100644 --- a/drivers/gpu/drm/vkms/vkms_drv.c +++ b/drivers/gpu/drm/vkms/vkms_drv.c @@ -146,7 +146,7 @@ static int vkms_modeset_init(struct vkms_device *vkmsdev) return vkms_output_init(vkmsdev); } -static int vkms_create(struct vkms_config *config) +int vkms_create(struct vkms_config *config) { int ret; struct faux_device *fdev; @@ -229,7 +229,7 @@ static int __init vkms_init(void) return 0; } -static void vkms_destroy(struct vkms_config *config) +void vkms_destroy(struct vkms_config *config) { struct faux_device *fdev; diff --git a/drivers/gpu/drm/vkms/vkms_drv.h b/drivers/gpu/drm/vkms/vkms_drv.h index fb9711e1c6fb..db260df1d4f6 100644 --- a/drivers/gpu/drm/vkms/vkms_drv.h +++ b/drivers/gpu/drm/vkms/vkms_drv.h @@ -256,6 +256,26 @@ struct vkms_device { #define to_vkms_plane_state(target)\ container_of(target, struct vkms_plane_state, base.base) +/** + * vkms_create() - Create a device from a configuration + * @config: Config used to configure the new device + * + * A pointer to the created vkms_device is stored in @config + * + * Returns: + * 0 on success or an error. + */ +int vkms_create(struct vkms_config *config); + +/** + * vkms_destroy() - Destroy a device + * @config: Config from which the device was created + * + * The device is completely removed, but the @config is not freed. It can be + * reused or destroyed with vkms_config_destroy(). + */ +void vkms_destroy(struct vkms_config *config); + /** * vkms_crtc_init() - Initialize a CRTC for VKMS * @dev: DRM device associated with the VKMS buffer -- cgit From 13fc9b9745cc5dbf38c4d559114cf98f8179b95f Mon Sep 17 00:00:00 2001 From: Louis Chauvet Date: Thu, 16 Oct 2025 19:56:04 +0200 Subject: drm/vkms: Add and remove VKMS instances via configfs MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Allow to create, enable, disable and destroy VKMS instances using configfs. For the moment, it is not possible to add pipeline items, so trying to enable the device will fail printing an informative error to the log. Tested-by: Mark Yacoub Reviewed-by: Louis Chauvet Reviewed-by: Harry Wentland Reviewed-by: Luca Ceresoli Signed-off-by: Louis Chauvet Co-developed-by: José Expósito Signed-off-by: José Expósito Link: https://lore.kernel.org/r/20251016175618.10051-3-jose.exposito89@gmail.com Signed-off-by: Luca Ceresoli --- Documentation/gpu/vkms.rst | 32 +++++++ drivers/gpu/drm/vkms/Kconfig | 1 + drivers/gpu/drm/vkms/Makefile | 3 +- drivers/gpu/drm/vkms/vkms_configfs.c | 172 +++++++++++++++++++++++++++++++++++ drivers/gpu/drm/vkms/vkms_configfs.h | 8 ++ drivers/gpu/drm/vkms/vkms_drv.c | 7 ++ 6 files changed, 222 insertions(+), 1 deletion(-) create mode 100644 drivers/gpu/drm/vkms/vkms_configfs.c create mode 100644 drivers/gpu/drm/vkms/vkms_configfs.h diff --git a/Documentation/gpu/vkms.rst b/Documentation/gpu/vkms.rst index 8a8b1002931f..73521b9ff0c3 100644 --- a/Documentation/gpu/vkms.rst +++ b/Documentation/gpu/vkms.rst @@ -51,6 +51,38 @@ To disable the driver, use :: sudo modprobe -r vkms +Configuring With Configfs +========================= + +It is possible to create and configure multiple VKMS instances via configfs. + +Start by mounting configfs and loading VKMS:: + + sudo mount -t configfs none /config + sudo modprobe vkms + +Once VKMS is loaded, ``/config/vkms`` is created automatically. Each directory +under ``/config/vkms`` represents a VKMS instance, create a new one:: + + sudo mkdir /config/vkms/my-vkms + +By default, the instance is disabled:: + + cat /config/vkms/my-vkms/enabled + 0 + +Once you are done configuring the VKMS instance, enable it:: + + echo "1" | sudo tee /config/vkms/my-vkms/enabled + +Finally, you can remove the VKMS instance disabling it:: + + echo "0" | sudo tee /config/vkms/my-vkms/enabled + +And removing the top level directory:: + + sudo rmdir /config/vkms/my-vkms + Testing With IGT ================ diff --git a/drivers/gpu/drm/vkms/Kconfig b/drivers/gpu/drm/vkms/Kconfig index 3c02f928ffe6..3977bbb99f7d 100644 --- a/drivers/gpu/drm/vkms/Kconfig +++ b/drivers/gpu/drm/vkms/Kconfig @@ -7,6 +7,7 @@ config DRM_VKMS select DRM_KMS_HELPER select DRM_GEM_SHMEM_HELPER select CRC32 + select CONFIGFS_FS default n help Virtual Kernel Mode-Setting (VKMS) is used for testing or for diff --git a/drivers/gpu/drm/vkms/Makefile b/drivers/gpu/drm/vkms/Makefile index d657865e573f..939991fc8233 100644 --- a/drivers/gpu/drm/vkms/Makefile +++ b/drivers/gpu/drm/vkms/Makefile @@ -8,7 +8,8 @@ vkms-y := \ vkms_composer.o \ vkms_writeback.o \ vkms_connector.o \ - vkms_config.o + vkms_config.o \ + vkms_configfs.o obj-$(CONFIG_DRM_VKMS) += vkms.o obj-$(CONFIG_DRM_VKMS_KUNIT_TEST) += tests/ diff --git a/drivers/gpu/drm/vkms/vkms_configfs.c b/drivers/gpu/drm/vkms/vkms_configfs.c new file mode 100644 index 000000000000..ee186952971b --- /dev/null +++ b/drivers/gpu/drm/vkms/vkms_configfs.c @@ -0,0 +1,172 @@ +// SPDX-License-Identifier: GPL-2.0+ +#include +#include +#include +#include + +#include "vkms_drv.h" +#include "vkms_config.h" +#include "vkms_configfs.h" + +/* To avoid registering configfs more than once or unregistering on error */ +static bool is_configfs_registered; + +/** + * struct vkms_configfs_device - Configfs representation of a VKMS device + * + * @group: Top level configuration group that represents a VKMS device. + * Initialized when a new directory is created under "/config/vkms/" + * @lock: Lock used to project concurrent access to the configuration attributes + * @config: Protected by @lock. Configuration of the VKMS device + * @enabled: Protected by @lock. The device is created or destroyed when this + * option changes + */ +struct vkms_configfs_device { + struct config_group group; + + struct mutex lock; + struct vkms_config *config; + bool enabled; +}; + +#define device_item_to_vkms_configfs_device(item) \ + container_of(to_config_group((item)), struct vkms_configfs_device, \ + group) + +static ssize_t device_enabled_show(struct config_item *item, char *page) +{ + struct vkms_configfs_device *dev; + bool enabled; + + dev = device_item_to_vkms_configfs_device(item); + + scoped_guard(mutex, &dev->lock) + enabled = dev->enabled; + + return sprintf(page, "%d\n", enabled); +} + +static ssize_t device_enabled_store(struct config_item *item, const char *page, + size_t count) +{ + struct vkms_configfs_device *dev; + bool enabled; + int ret = 0; + + dev = device_item_to_vkms_configfs_device(item); + + if (kstrtobool(page, &enabled)) + return -EINVAL; + + scoped_guard(mutex, &dev->lock) { + if (!dev->enabled && enabled) { + if (!vkms_config_is_valid(dev->config)) + return -EINVAL; + + ret = vkms_create(dev->config); + if (ret) + return ret; + } else if (dev->enabled && !enabled) { + vkms_destroy(dev->config); + } + + dev->enabled = enabled; + } + + return (ssize_t)count; +} + +CONFIGFS_ATTR(device_, enabled); + +static struct configfs_attribute *device_item_attrs[] = { + &device_attr_enabled, + NULL, +}; + +static void device_release(struct config_item *item) +{ + struct vkms_configfs_device *dev; + + dev = device_item_to_vkms_configfs_device(item); + + if (dev->enabled) + vkms_destroy(dev->config); + + mutex_destroy(&dev->lock); + vkms_config_destroy(dev->config); + kfree(dev); +} + +static struct configfs_item_operations device_item_operations = { + .release = &device_release, +}; + +static const struct config_item_type device_item_type = { + .ct_attrs = device_item_attrs, + .ct_item_ops = &device_item_operations, + .ct_owner = THIS_MODULE, +}; + +static struct config_group *make_device_group(struct config_group *group, + const char *name) +{ + struct vkms_configfs_device *dev; + + if (strcmp(name, DEFAULT_DEVICE_NAME) == 0) + return ERR_PTR(-EINVAL); + + dev = kzalloc(sizeof(*dev), GFP_KERNEL); + if (!dev) + return ERR_PTR(-ENOMEM); + + dev->config = vkms_config_create(name); + if (IS_ERR(dev->config)) { + kfree(dev); + return ERR_CAST(dev->config); + } + + config_group_init_type_name(&dev->group, name, &device_item_type); + mutex_init(&dev->lock); + + return &dev->group; +} + +static struct configfs_group_operations device_group_ops = { + .make_group = &make_device_group, +}; + +static const struct config_item_type device_group_type = { + .ct_group_ops = &device_group_ops, + .ct_owner = THIS_MODULE, +}; + +static struct configfs_subsystem vkms_subsys = { + .su_group = { + .cg_item = { + .ci_name = "vkms", + .ci_type = &device_group_type, + }, + }, + .su_mutex = __MUTEX_INITIALIZER(vkms_subsys.su_mutex), +}; + +int vkms_configfs_register(void) +{ + int ret; + + if (is_configfs_registered) + return 0; + + config_group_init(&vkms_subsys.su_group); + ret = configfs_register_subsystem(&vkms_subsys); + + is_configfs_registered = ret == 0; + + return ret; +} + +void vkms_configfs_unregister(void) +{ + if (is_configfs_registered) + configfs_unregister_subsystem(&vkms_subsys); +} diff --git a/drivers/gpu/drm/vkms/vkms_configfs.h b/drivers/gpu/drm/vkms/vkms_configfs.h new file mode 100644 index 000000000000..e9020b0043db --- /dev/null +++ b/drivers/gpu/drm/vkms/vkms_configfs.h @@ -0,0 +1,8 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +#ifndef _VKMS_CONFIGFS_H_ +#define _VKMS_CONFIGFS_H_ + +int vkms_configfs_register(void); +void vkms_configfs_unregister(void); + +#endif /* _VKMS_CONFIGFS_H_ */ diff --git a/drivers/gpu/drm/vkms/vkms_drv.c b/drivers/gpu/drm/vkms/vkms_drv.c index 78af37c7bd83..c1f23e6a4b07 100644 --- a/drivers/gpu/drm/vkms/vkms_drv.c +++ b/drivers/gpu/drm/vkms/vkms_drv.c @@ -28,6 +28,7 @@ #include #include "vkms_config.h" +#include "vkms_configfs.h" #include "vkms_drv.h" #define DRIVER_NAME "vkms" @@ -214,6 +215,10 @@ static int __init vkms_init(void) int ret; struct vkms_config *config; + ret = vkms_configfs_register(); + if (ret) + return ret; + config = vkms_config_default_create(enable_cursor, enable_writeback, enable_overlay); if (IS_ERR(config)) return PTR_ERR(config); @@ -250,6 +255,8 @@ void vkms_destroy(struct vkms_config *config) static void __exit vkms_exit(void) { + vkms_configfs_unregister(); + if (!default_config) return; -- cgit From 2f1734ba271bb98d582b02f72d77d1c7710a8d7a Mon Sep 17 00:00:00 2001 From: Louis Chauvet Date: Thu, 16 Oct 2025 19:56:05 +0200 Subject: drm/vkms: Allow to configure multiple planes via configfs MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Create a default subgroup at /config/vkms/planes to allow to create as many planes as required. Tested-by: Mark Yacoub Reviewed-by: Louis Chauvet Reviewed-by: Harry Wentland Reviewed-by: Luca Ceresoli Signed-off-by: Louis Chauvet Co-developed-by: José Expósito Signed-off-by: José Expósito Link: https://lore.kernel.org/r/20251016175618.10051-4-jose.exposito89@gmail.com Signed-off-by: Luca Ceresoli --- Documentation/gpu/vkms.rst | 16 ++++++- drivers/gpu/drm/vkms/vkms_configfs.c | 88 ++++++++++++++++++++++++++++++++++++ 2 files changed, 103 insertions(+), 1 deletion(-) diff --git a/Documentation/gpu/vkms.rst b/Documentation/gpu/vkms.rst index 73521b9ff0c3..c0c892e4e27c 100644 --- a/Documentation/gpu/vkms.rst +++ b/Documentation/gpu/vkms.rst @@ -71,6 +71,19 @@ By default, the instance is disabled:: cat /config/vkms/my-vkms/enabled 0 +And directories are created for each configurable item of the display pipeline:: + + tree /config/vkms/my-vkms + ├── enabled + └── planes + +To add items to the display pipeline, create one or more directories under the +available paths. + +Start by creating one or more planes:: + + sudo mkdir /config/vkms/my-vkms/planes/plane0 + Once you are done configuring the VKMS instance, enable it:: echo "1" | sudo tee /config/vkms/my-vkms/enabled @@ -79,8 +92,9 @@ Finally, you can remove the VKMS instance disabling it:: echo "0" | sudo tee /config/vkms/my-vkms/enabled -And removing the top level directory:: +And removing the top level directory and its subdirectories:: + sudo rmdir /config/vkms/my-vkms/planes/* sudo rmdir /config/vkms/my-vkms Testing With IGT diff --git a/drivers/gpu/drm/vkms/vkms_configfs.c b/drivers/gpu/drm/vkms/vkms_configfs.c index ee186952971b..a7c705e00e4c 100644 --- a/drivers/gpu/drm/vkms/vkms_configfs.c +++ b/drivers/gpu/drm/vkms/vkms_configfs.c @@ -16,6 +16,7 @@ static bool is_configfs_registered; * * @group: Top level configuration group that represents a VKMS device. * Initialized when a new directory is created under "/config/vkms/" + * @planes_group: Default subgroup of @group at "/config/vkms/planes" * @lock: Lock used to project concurrent access to the configuration attributes * @config: Protected by @lock. Configuration of the VKMS device * @enabled: Protected by @lock. The device is created or destroyed when this @@ -23,16 +24,99 @@ static bool is_configfs_registered; */ struct vkms_configfs_device { struct config_group group; + struct config_group planes_group; struct mutex lock; struct vkms_config *config; bool enabled; }; +/** + * struct vkms_configfs_plane - Configfs representation of a plane + * + * @group: Top level configuration group that represents a plane. + * Initialized when a new directory is created under "/config/vkms/planes" + * @dev: The vkms_configfs_device this plane belongs to + * @config: Configuration of the VKMS plane + */ +struct vkms_configfs_plane { + struct config_group group; + struct vkms_configfs_device *dev; + struct vkms_config_plane *config; +}; + #define device_item_to_vkms_configfs_device(item) \ container_of(to_config_group((item)), struct vkms_configfs_device, \ group) +#define child_group_to_vkms_configfs_device(group) \ + device_item_to_vkms_configfs_device((&(group)->cg_item)->ci_parent) + +#define plane_item_to_vkms_configfs_plane(item) \ + container_of(to_config_group((item)), struct vkms_configfs_plane, group) + +static void plane_release(struct config_item *item) +{ + struct vkms_configfs_plane *plane; + struct mutex *lock; + + plane = plane_item_to_vkms_configfs_plane(item); + lock = &plane->dev->lock; + + scoped_guard(mutex, lock) { + vkms_config_destroy_plane(plane->config); + kfree(plane); + } +} + +static struct configfs_item_operations plane_item_operations = { + .release = &plane_release, +}; + +static const struct config_item_type plane_item_type = { + .ct_item_ops = &plane_item_operations, + .ct_owner = THIS_MODULE, +}; + +static struct config_group *make_plane_group(struct config_group *group, + const char *name) +{ + struct vkms_configfs_device *dev; + struct vkms_configfs_plane *plane; + + dev = child_group_to_vkms_configfs_device(group); + + scoped_guard(mutex, &dev->lock) { + if (dev->enabled) + return ERR_PTR(-EBUSY); + + plane = kzalloc(sizeof(*plane), GFP_KERNEL); + if (!plane) + return ERR_PTR(-ENOMEM); + + plane->dev = dev; + + plane->config = vkms_config_create_plane(dev->config); + if (IS_ERR(plane->config)) { + kfree(plane); + return ERR_CAST(plane->config); + } + + config_group_init_type_name(&plane->group, name, &plane_item_type); + } + + return &plane->group; +} + +static struct configfs_group_operations planes_group_operations = { + .make_group = &make_plane_group, +}; + +static const struct config_item_type plane_group_type = { + .ct_group_ops = &planes_group_operations, + .ct_owner = THIS_MODULE, +}; + static ssize_t device_enabled_show(struct config_item *item, char *page) { struct vkms_configfs_device *dev; @@ -128,6 +212,10 @@ static struct config_group *make_device_group(struct config_group *group, config_group_init_type_name(&dev->group, name, &device_item_type); mutex_init(&dev->lock); + config_group_init_type_name(&dev->planes_group, "planes", + &plane_group_type); + configfs_add_default_group(&dev->planes_group, &dev->group); + return &dev->group; } -- cgit From 187bc30625f3e0ee8d0b3694592c4b8ff771c845 Mon Sep 17 00:00:00 2001 From: Louis Chauvet Date: Thu, 16 Oct 2025 19:56:06 +0200 Subject: drm/vkms: Allow to configure the plane type via configfs MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit When a plane is created, add a `type` file to allow to set the type: - 0 overlay - 1 primary - 2 cursor Tested-by: Mark Yacoub Reviewed-by: Louis Chauvet Reviewed-by: Harry Wentland Reviewed-by: Luca Ceresoli Signed-off-by: Louis Chauvet Co-developed-by: José Expósito Signed-off-by: José Expósito Link: https://lore.kernel.org/r/20251016175618.10051-5-jose.exposito89@gmail.com Signed-off-by: Luca Ceresoli --- Documentation/gpu/vkms.rst | 5 ++++ drivers/gpu/drm/vkms/vkms_configfs.c | 46 ++++++++++++++++++++++++++++++++++++ 2 files changed, 51 insertions(+) diff --git a/Documentation/gpu/vkms.rst b/Documentation/gpu/vkms.rst index c0c892e4e27c..dd880ce6811c 100644 --- a/Documentation/gpu/vkms.rst +++ b/Documentation/gpu/vkms.rst @@ -84,6 +84,11 @@ Start by creating one or more planes:: sudo mkdir /config/vkms/my-vkms/planes/plane0 +Planes have 1 configurable attribute: + +- type: Plane type: 0 overlay, 1 primary, 2 cursor (same values as those + exposed by the "type" property of a plane) + Once you are done configuring the VKMS instance, enable it:: echo "1" | sudo tee /config/vkms/my-vkms/enabled diff --git a/drivers/gpu/drm/vkms/vkms_configfs.c b/drivers/gpu/drm/vkms/vkms_configfs.c index a7c705e00e4c..398755127759 100644 --- a/drivers/gpu/drm/vkms/vkms_configfs.c +++ b/drivers/gpu/drm/vkms/vkms_configfs.c @@ -55,6 +55,51 @@ struct vkms_configfs_plane { #define plane_item_to_vkms_configfs_plane(item) \ container_of(to_config_group((item)), struct vkms_configfs_plane, group) +static ssize_t plane_type_show(struct config_item *item, char *page) +{ + struct vkms_configfs_plane *plane; + enum drm_plane_type type; + + plane = plane_item_to_vkms_configfs_plane(item); + + scoped_guard(mutex, &plane->dev->lock) + type = vkms_config_plane_get_type(plane->config); + + return sprintf(page, "%u", type); +} + +static ssize_t plane_type_store(struct config_item *item, const char *page, + size_t count) +{ + struct vkms_configfs_plane *plane; + enum drm_plane_type type; + + plane = plane_item_to_vkms_configfs_plane(item); + + if (kstrtouint(page, 10, &type)) + return -EINVAL; + + if (type != DRM_PLANE_TYPE_OVERLAY && type != DRM_PLANE_TYPE_PRIMARY && + type != DRM_PLANE_TYPE_CURSOR) + return -EINVAL; + + scoped_guard(mutex, &plane->dev->lock) { + if (plane->dev->enabled) + return -EBUSY; + + vkms_config_plane_set_type(plane->config, type); + } + + return (ssize_t)count; +} + +CONFIGFS_ATTR(plane_, type); + +static struct configfs_attribute *plane_item_attrs[] = { + &plane_attr_type, + NULL, +}; + static void plane_release(struct config_item *item) { struct vkms_configfs_plane *plane; @@ -74,6 +119,7 @@ static struct configfs_item_operations plane_item_operations = { }; static const struct config_item_type plane_item_type = { + .ct_attrs = plane_item_attrs, .ct_item_ops = &plane_item_operations, .ct_owner = THIS_MODULE, }; -- cgit From 3e4d5b30d2b262c6db84773cafe9097f7ec61ff5 Mon Sep 17 00:00:00 2001 From: Louis Chauvet Date: Thu, 16 Oct 2025 19:56:07 +0200 Subject: drm/vkms: Allow to configure multiple CRTCs via configfs MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Create a default subgroup at /config/vkms/crtcs to allow to create as many CRTCs as required. Tested-by: Mark Yacoub Reviewed-by: Louis Chauvet Reviewed-by: Harry Wentland Reviewed-by: Luca Ceresoli Signed-off-by: Louis Chauvet Co-developed-by: José Expósito Signed-off-by: José Expósito Link: https://lore.kernel.org/r/20251016175618.10051-6-jose.exposito89@gmail.com Signed-off-by: Luca Ceresoli --- Documentation/gpu/vkms.rst | 6 +++ drivers/gpu/drm/vkms/vkms_configfs.c | 85 ++++++++++++++++++++++++++++++++++++ 2 files changed, 91 insertions(+) diff --git a/Documentation/gpu/vkms.rst b/Documentation/gpu/vkms.rst index dd880ce6811c..7396447b5e58 100644 --- a/Documentation/gpu/vkms.rst +++ b/Documentation/gpu/vkms.rst @@ -74,6 +74,7 @@ By default, the instance is disabled:: And directories are created for each configurable item of the display pipeline:: tree /config/vkms/my-vkms + ├── crtcs ├── enabled └── planes @@ -89,6 +90,10 @@ Planes have 1 configurable attribute: - type: Plane type: 0 overlay, 1 primary, 2 cursor (same values as those exposed by the "type" property of a plane) +Continue by creating one or more CRTCs:: + + sudo mkdir /config/vkms/my-vkms/crtcs/crtc0 + Once you are done configuring the VKMS instance, enable it:: echo "1" | sudo tee /config/vkms/my-vkms/enabled @@ -100,6 +105,7 @@ Finally, you can remove the VKMS instance disabling it:: And removing the top level directory and its subdirectories:: sudo rmdir /config/vkms/my-vkms/planes/* + sudo rmdir /config/vkms/my-vkms/crtcs/* sudo rmdir /config/vkms/my-vkms Testing With IGT diff --git a/drivers/gpu/drm/vkms/vkms_configfs.c b/drivers/gpu/drm/vkms/vkms_configfs.c index 398755127759..62a82366791d 100644 --- a/drivers/gpu/drm/vkms/vkms_configfs.c +++ b/drivers/gpu/drm/vkms/vkms_configfs.c @@ -17,6 +17,7 @@ static bool is_configfs_registered; * @group: Top level configuration group that represents a VKMS device. * Initialized when a new directory is created under "/config/vkms/" * @planes_group: Default subgroup of @group at "/config/vkms/planes" + * @crtcs_group: Default subgroup of @group at "/config/vkms/crtcs" * @lock: Lock used to project concurrent access to the configuration attributes * @config: Protected by @lock. Configuration of the VKMS device * @enabled: Protected by @lock. The device is created or destroyed when this @@ -25,6 +26,7 @@ static bool is_configfs_registered; struct vkms_configfs_device { struct config_group group; struct config_group planes_group; + struct config_group crtcs_group; struct mutex lock; struct vkms_config *config; @@ -45,6 +47,20 @@ struct vkms_configfs_plane { struct vkms_config_plane *config; }; +/** + * struct vkms_configfs_crtc - Configfs representation of a CRTC + * + * @group: Top level configuration group that represents a CRTC. + * Initialized when a new directory is created under "/config/vkms/crtcs" + * @dev: The vkms_configfs_device this CRTC belongs to + * @config: Configuration of the VKMS CRTC + */ +struct vkms_configfs_crtc { + struct config_group group; + struct vkms_configfs_device *dev; + struct vkms_config_crtc *config; +}; + #define device_item_to_vkms_configfs_device(item) \ container_of(to_config_group((item)), struct vkms_configfs_device, \ group) @@ -55,6 +71,71 @@ struct vkms_configfs_plane { #define plane_item_to_vkms_configfs_plane(item) \ container_of(to_config_group((item)), struct vkms_configfs_plane, group) +#define crtc_item_to_vkms_configfs_crtc(item) \ + container_of(to_config_group((item)), struct vkms_configfs_crtc, group) + +static void crtc_release(struct config_item *item) +{ + struct vkms_configfs_crtc *crtc; + struct mutex *lock; + + crtc = crtc_item_to_vkms_configfs_crtc(item); + lock = &crtc->dev->lock; + + scoped_guard(mutex, lock) { + vkms_config_destroy_crtc(crtc->dev->config, crtc->config); + kfree(crtc); + } +} + +static struct configfs_item_operations crtc_item_operations = { + .release = &crtc_release, +}; + +static const struct config_item_type crtc_item_type = { + .ct_item_ops = &crtc_item_operations, + .ct_owner = THIS_MODULE, +}; + +static struct config_group *make_crtc_group(struct config_group *group, + const char *name) +{ + struct vkms_configfs_device *dev; + struct vkms_configfs_crtc *crtc; + + dev = child_group_to_vkms_configfs_device(group); + + scoped_guard(mutex, &dev->lock) { + if (dev->enabled) + return ERR_PTR(-EBUSY); + + crtc = kzalloc(sizeof(*crtc), GFP_KERNEL); + if (!crtc) + return ERR_PTR(-ENOMEM); + + crtc->dev = dev; + + crtc->config = vkms_config_create_crtc(dev->config); + if (IS_ERR(crtc->config)) { + kfree(crtc); + return ERR_CAST(crtc->config); + } + + config_group_init_type_name(&crtc->group, name, &crtc_item_type); + } + + return &crtc->group; +} + +static struct configfs_group_operations crtcs_group_operations = { + .make_group = &make_crtc_group, +}; + +static const struct config_item_type crtc_group_type = { + .ct_group_ops = &crtcs_group_operations, + .ct_owner = THIS_MODULE, +}; + static ssize_t plane_type_show(struct config_item *item, char *page) { struct vkms_configfs_plane *plane; @@ -262,6 +343,10 @@ static struct config_group *make_device_group(struct config_group *group, &plane_group_type); configfs_add_default_group(&dev->planes_group, &dev->group); + config_group_init_type_name(&dev->crtcs_group, "crtcs", + &crtc_group_type); + configfs_add_default_group(&dev->crtcs_group, &dev->group); + return &dev->group; } -- cgit From ee5c2c7d4bb6998ff11778436acbdc3154ce74ef Mon Sep 17 00:00:00 2001 From: Louis Chauvet Date: Thu, 16 Oct 2025 19:56:08 +0200 Subject: drm/vkms: Allow to configure CRTC writeback support via configfs MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit When a CRTC is created, add a `writeback` file to allow to enable or disable writeback connector support Tested-by: Mark Yacoub Reviewed-by: Louis Chauvet Reviewed-by: Harry Wentland Reviewed-by: Luca Ceresoli Signed-off-by: Louis Chauvet Co-developed-by: José Expósito Signed-off-by: José Expósito Link: https://lore.kernel.org/r/20251016175618.10051-7-jose.exposito89@gmail.com Signed-off-by: Luca Ceresoli --- Documentation/gpu/vkms.rst | 4 ++++ drivers/gpu/drm/vkms/vkms_configfs.c | 42 ++++++++++++++++++++++++++++++++++++ 2 files changed, 46 insertions(+) diff --git a/Documentation/gpu/vkms.rst b/Documentation/gpu/vkms.rst index 7396447b5e58..9f76918bb1d1 100644 --- a/Documentation/gpu/vkms.rst +++ b/Documentation/gpu/vkms.rst @@ -94,6 +94,10 @@ Continue by creating one or more CRTCs:: sudo mkdir /config/vkms/my-vkms/crtcs/crtc0 +CRTCs have 1 configurable attribute: + +- writeback: Enable or disable writeback connector support by writing 1 or 0 + Once you are done configuring the VKMS instance, enable it:: echo "1" | sudo tee /config/vkms/my-vkms/enabled diff --git a/drivers/gpu/drm/vkms/vkms_configfs.c b/drivers/gpu/drm/vkms/vkms_configfs.c index 62a82366791d..e9f445043268 100644 --- a/drivers/gpu/drm/vkms/vkms_configfs.c +++ b/drivers/gpu/drm/vkms/vkms_configfs.c @@ -74,6 +74,47 @@ struct vkms_configfs_crtc { #define crtc_item_to_vkms_configfs_crtc(item) \ container_of(to_config_group((item)), struct vkms_configfs_crtc, group) +static ssize_t crtc_writeback_show(struct config_item *item, char *page) +{ + struct vkms_configfs_crtc *crtc; + bool writeback; + + crtc = crtc_item_to_vkms_configfs_crtc(item); + + scoped_guard(mutex, &crtc->dev->lock) + writeback = vkms_config_crtc_get_writeback(crtc->config); + + return sprintf(page, "%d\n", writeback); +} + +static ssize_t crtc_writeback_store(struct config_item *item, const char *page, + size_t count) +{ + struct vkms_configfs_crtc *crtc; + bool writeback; + + crtc = crtc_item_to_vkms_configfs_crtc(item); + + if (kstrtobool(page, &writeback)) + return -EINVAL; + + scoped_guard(mutex, &crtc->dev->lock) { + if (crtc->dev->enabled) + return -EBUSY; + + vkms_config_crtc_set_writeback(crtc->config, writeback); + } + + return (ssize_t)count; +} + +CONFIGFS_ATTR(crtc_, writeback); + +static struct configfs_attribute *crtc_item_attrs[] = { + &crtc_attr_writeback, + NULL, +}; + static void crtc_release(struct config_item *item) { struct vkms_configfs_crtc *crtc; @@ -93,6 +134,7 @@ static struct configfs_item_operations crtc_item_operations = { }; static const struct config_item_type crtc_item_type = { + .ct_attrs = crtc_item_attrs, .ct_item_ops = &crtc_item_operations, .ct_owner = THIS_MODULE, }; -- cgit From 95fa73787a7947a8fdfbb1ad310c3f11b26065d3 Mon Sep 17 00:00:00 2001 From: Louis Chauvet Date: Thu, 16 Oct 2025 19:56:09 +0200 Subject: drm/vkms: Allow to attach planes and CRTCs via configfs MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Create a default subgroup at /config/vkms/planes/plane/possible_crtcs that will contain symbolic links to the possible CRTCs for the plane. Tested-by: Mark Yacoub Reviewed-by: Louis Chauvet Reviewed-by: Harry Wentland Reviewed-by: Luca Ceresoli Signed-off-by: Louis Chauvet Co-developed-by: José Expósito Signed-off-by: José Expósito Link: https://lore.kernel.org/r/20251016175618.10051-8-jose.exposito89@gmail.com Signed-off-by: Luca Ceresoli --- Documentation/gpu/vkms.rst | 9 ++++++ drivers/gpu/drm/vkms/vkms_configfs.c | 58 ++++++++++++++++++++++++++++++++++++ 2 files changed, 67 insertions(+) diff --git a/Documentation/gpu/vkms.rst b/Documentation/gpu/vkms.rst index 9f76918bb1d1..c79fca3d3a11 100644 --- a/Documentation/gpu/vkms.rst +++ b/Documentation/gpu/vkms.rst @@ -98,6 +98,14 @@ CRTCs have 1 configurable attribute: - writeback: Enable or disable writeback connector support by writing 1 or 0 +To finish the configuration, link the different pipeline items:: + + sudo ln -s /config/vkms/my-vkms/crtcs/crtc0 /config/vkms/my-vkms/planes/plane0/possible_crtcs + +Since at least one primary plane is required, make sure to set the right type:: + + echo "1" | sudo tee /config/vkms/my-vkms/planes/plane0/type + Once you are done configuring the VKMS instance, enable it:: echo "1" | sudo tee /config/vkms/my-vkms/enabled @@ -108,6 +116,7 @@ Finally, you can remove the VKMS instance disabling it:: And removing the top level directory and its subdirectories:: + sudo rm /config/vkms/my-vkms/planes/*/possible_crtcs/* sudo rmdir /config/vkms/my-vkms/planes/* sudo rmdir /config/vkms/my-vkms/crtcs/* sudo rmdir /config/vkms/my-vkms diff --git a/drivers/gpu/drm/vkms/vkms_configfs.c b/drivers/gpu/drm/vkms/vkms_configfs.c index e9f445043268..2cf97c2b6203 100644 --- a/drivers/gpu/drm/vkms/vkms_configfs.c +++ b/drivers/gpu/drm/vkms/vkms_configfs.c @@ -38,11 +38,13 @@ struct vkms_configfs_device { * * @group: Top level configuration group that represents a plane. * Initialized when a new directory is created under "/config/vkms/planes" + * @possible_crtcs_group: Default subgroup of @group at "plane/possible_crtcs" * @dev: The vkms_configfs_device this plane belongs to * @config: Configuration of the VKMS plane */ struct vkms_configfs_plane { struct config_group group; + struct config_group possible_crtcs_group; struct vkms_configfs_device *dev; struct vkms_config_plane *config; }; @@ -71,6 +73,10 @@ struct vkms_configfs_crtc { #define plane_item_to_vkms_configfs_plane(item) \ container_of(to_config_group((item)), struct vkms_configfs_plane, group) +#define plane_possible_crtcs_item_to_vkms_configfs_plane(item) \ + container_of(to_config_group((item)), struct vkms_configfs_plane, \ + possible_crtcs_group) + #define crtc_item_to_vkms_configfs_crtc(item) \ container_of(to_config_group((item)), struct vkms_configfs_crtc, group) @@ -178,6 +184,52 @@ static const struct config_item_type crtc_group_type = { .ct_owner = THIS_MODULE, }; +static int plane_possible_crtcs_allow_link(struct config_item *src, + struct config_item *target) +{ + struct vkms_configfs_plane *plane; + struct vkms_configfs_crtc *crtc; + int ret; + + if (target->ci_type != &crtc_item_type) + return -EINVAL; + + plane = plane_possible_crtcs_item_to_vkms_configfs_plane(src); + crtc = crtc_item_to_vkms_configfs_crtc(target); + + scoped_guard(mutex, &plane->dev->lock) { + if (plane->dev->enabled) + return -EBUSY; + + ret = vkms_config_plane_attach_crtc(plane->config, crtc->config); + } + + return ret; +} + +static void plane_possible_crtcs_drop_link(struct config_item *src, + struct config_item *target) +{ + struct vkms_configfs_plane *plane; + struct vkms_configfs_crtc *crtc; + + plane = plane_possible_crtcs_item_to_vkms_configfs_plane(src); + crtc = crtc_item_to_vkms_configfs_crtc(target); + + scoped_guard(mutex, &plane->dev->lock) + vkms_config_plane_detach_crtc(plane->config, crtc->config); +} + +static struct configfs_item_operations plane_possible_crtcs_item_operations = { + .allow_link = plane_possible_crtcs_allow_link, + .drop_link = plane_possible_crtcs_drop_link, +}; + +static const struct config_item_type plane_possible_crtcs_group_type = { + .ct_item_ops = &plane_possible_crtcs_item_operations, + .ct_owner = THIS_MODULE, +}; + static ssize_t plane_type_show(struct config_item *item, char *page) { struct vkms_configfs_plane *plane; @@ -272,6 +324,12 @@ static struct config_group *make_plane_group(struct config_group *group, } config_group_init_type_name(&plane->group, name, &plane_item_type); + + config_group_init_type_name(&plane->possible_crtcs_group, + "possible_crtcs", + &plane_possible_crtcs_group_type); + configfs_add_default_group(&plane->possible_crtcs_group, + &plane->group); } return &plane->group; -- cgit From 67d8cf92e13ec05e64745ae7b63545de5d8e867a Mon Sep 17 00:00:00 2001 From: Louis Chauvet Date: Thu, 16 Oct 2025 19:56:10 +0200 Subject: drm/vkms: Allow to configure multiple encoders via configfs MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Create a default subgroup at /config/vkms/encoders to allow to create as many encoders as required. Tested-by: Mark Yacoub Reviewed-by: Louis Chauvet Reviewed-by: Harry Wentland Reviewed-by: Luca Ceresoli Signed-off-by: Louis Chauvet Co-developed-by: José Expósito Signed-off-by: José Expósito Link: https://lore.kernel.org/r/20251016175618.10051-9-jose.exposito89@gmail.com Signed-off-by: Luca Ceresoli --- Documentation/gpu/vkms.rst | 6 +++ drivers/gpu/drm/vkms/vkms_configfs.c | 87 ++++++++++++++++++++++++++++++++++++ 2 files changed, 93 insertions(+) diff --git a/Documentation/gpu/vkms.rst b/Documentation/gpu/vkms.rst index c79fca3d3a11..622fbfa12a84 100644 --- a/Documentation/gpu/vkms.rst +++ b/Documentation/gpu/vkms.rst @@ -76,6 +76,7 @@ And directories are created for each configurable item of the display pipeline:: tree /config/vkms/my-vkms ├── crtcs ├── enabled + ├── encoders └── planes To add items to the display pipeline, create one or more directories under the @@ -98,6 +99,10 @@ CRTCs have 1 configurable attribute: - writeback: Enable or disable writeback connector support by writing 1 or 0 +Next, create one or more encoders:: + + sudo mkdir /config/vkms/my-vkms/encoders/encoder0 + To finish the configuration, link the different pipeline items:: sudo ln -s /config/vkms/my-vkms/crtcs/crtc0 /config/vkms/my-vkms/planes/plane0/possible_crtcs @@ -119,6 +124,7 @@ And removing the top level directory and its subdirectories:: sudo rm /config/vkms/my-vkms/planes/*/possible_crtcs/* sudo rmdir /config/vkms/my-vkms/planes/* sudo rmdir /config/vkms/my-vkms/crtcs/* + sudo rmdir /config/vkms/my-vkms/encoders/* sudo rmdir /config/vkms/my-vkms Testing With IGT diff --git a/drivers/gpu/drm/vkms/vkms_configfs.c b/drivers/gpu/drm/vkms/vkms_configfs.c index 2cf97c2b6203..0df86e63570a 100644 --- a/drivers/gpu/drm/vkms/vkms_configfs.c +++ b/drivers/gpu/drm/vkms/vkms_configfs.c @@ -18,6 +18,7 @@ static bool is_configfs_registered; * Initialized when a new directory is created under "/config/vkms/" * @planes_group: Default subgroup of @group at "/config/vkms/planes" * @crtcs_group: Default subgroup of @group at "/config/vkms/crtcs" + * @encoders_group: Default subgroup of @group at "/config/vkms/encoders" * @lock: Lock used to project concurrent access to the configuration attributes * @config: Protected by @lock. Configuration of the VKMS device * @enabled: Protected by @lock. The device is created or destroyed when this @@ -27,6 +28,7 @@ struct vkms_configfs_device { struct config_group group; struct config_group planes_group; struct config_group crtcs_group; + struct config_group encoders_group; struct mutex lock; struct vkms_config *config; @@ -63,6 +65,20 @@ struct vkms_configfs_crtc { struct vkms_config_crtc *config; }; +/** + * struct vkms_configfs_encoder - Configfs representation of a encoder + * + * @group: Top level configuration group that represents a encoder. + * Initialized when a new directory is created under "/config/vkms/encoders" + * @dev: The vkms_configfs_device this encoder belongs to + * @config: Configuration of the VKMS encoder + */ +struct vkms_configfs_encoder { + struct config_group group; + struct vkms_configfs_device *dev; + struct vkms_config_encoder *config; +}; + #define device_item_to_vkms_configfs_device(item) \ container_of(to_config_group((item)), struct vkms_configfs_device, \ group) @@ -80,6 +96,10 @@ struct vkms_configfs_crtc { #define crtc_item_to_vkms_configfs_crtc(item) \ container_of(to_config_group((item)), struct vkms_configfs_crtc, group) +#define encoder_item_to_vkms_configfs_encoder(item) \ + container_of(to_config_group((item)), struct vkms_configfs_encoder, \ + group) + static ssize_t crtc_writeback_show(struct config_item *item, char *page) { struct vkms_configfs_crtc *crtc; @@ -344,6 +364,69 @@ static const struct config_item_type plane_group_type = { .ct_owner = THIS_MODULE, }; +static void encoder_release(struct config_item *item) +{ + struct vkms_configfs_encoder *encoder; + struct mutex *lock; + + encoder = encoder_item_to_vkms_configfs_encoder(item); + lock = &encoder->dev->lock; + + scoped_guard(mutex, lock) { + vkms_config_destroy_encoder(encoder->dev->config, encoder->config); + kfree(encoder); + } +} + +static struct configfs_item_operations encoder_item_operations = { + .release = &encoder_release, +}; + +static const struct config_item_type encoder_item_type = { + .ct_item_ops = &encoder_item_operations, + .ct_owner = THIS_MODULE, +}; + +static struct config_group *make_encoder_group(struct config_group *group, + const char *name) +{ + struct vkms_configfs_device *dev; + struct vkms_configfs_encoder *encoder; + + dev = child_group_to_vkms_configfs_device(group); + + scoped_guard(mutex, &dev->lock) { + if (dev->enabled) + return ERR_PTR(-EBUSY); + + encoder = kzalloc(sizeof(*encoder), GFP_KERNEL); + if (!encoder) + return ERR_PTR(-ENOMEM); + + encoder->dev = dev; + + encoder->config = vkms_config_create_encoder(dev->config); + if (IS_ERR(encoder->config)) { + kfree(encoder); + return ERR_CAST(encoder->config); + } + + config_group_init_type_name(&encoder->group, name, + &encoder_item_type); + } + + return &encoder->group; +} + +static struct configfs_group_operations encoders_group_operations = { + .make_group = &make_encoder_group, +}; + +static const struct config_item_type encoder_group_type = { + .ct_group_ops = &encoders_group_operations, + .ct_owner = THIS_MODULE, +}; + static ssize_t device_enabled_show(struct config_item *item, char *page) { struct vkms_configfs_device *dev; @@ -447,6 +530,10 @@ static struct config_group *make_device_group(struct config_group *group, &crtc_group_type); configfs_add_default_group(&dev->crtcs_group, &dev->group); + config_group_init_type_name(&dev->encoders_group, "encoders", + &encoder_group_type); + configfs_add_default_group(&dev->encoders_group, &dev->group); + return &dev->group; } -- cgit From fad1138b2377aa094b1c80fad852eadbcf3a85c3 Mon Sep 17 00:00:00 2001 From: Louis Chauvet Date: Thu, 16 Oct 2025 19:56:11 +0200 Subject: drm/vkms: Allow to attach encoders and CRTCs via configfs MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Create a default subgroup at /config/vkms/encoders/encoder/possible_crtcs that will contain symbolic links to the possible CRTCs for the encoder. Tested-by: Mark Yacoub Reviewed-by: Louis Chauvet Reviewed-by: Harry Wentland Reviewed-by: Luca Ceresoli Signed-off-by: Louis Chauvet Co-developed-by: José Expósito Signed-off-by: José Expósito Link: https://lore.kernel.org/r/20251016175618.10051-10-jose.exposito89@gmail.com Signed-off-by: Luca Ceresoli --- Documentation/gpu/vkms.rst | 2 ++ drivers/gpu/drm/vkms/vkms_configfs.c | 58 ++++++++++++++++++++++++++++++++++++ 2 files changed, 60 insertions(+) diff --git a/Documentation/gpu/vkms.rst b/Documentation/gpu/vkms.rst index 622fbfa12a84..585effe90550 100644 --- a/Documentation/gpu/vkms.rst +++ b/Documentation/gpu/vkms.rst @@ -106,6 +106,7 @@ Next, create one or more encoders:: To finish the configuration, link the different pipeline items:: sudo ln -s /config/vkms/my-vkms/crtcs/crtc0 /config/vkms/my-vkms/planes/plane0/possible_crtcs + sudo ln -s /config/vkms/my-vkms/crtcs/crtc0 /config/vkms/my-vkms/encoders/encoder0/possible_crtcs Since at least one primary plane is required, make sure to set the right type:: @@ -122,6 +123,7 @@ Finally, you can remove the VKMS instance disabling it:: And removing the top level directory and its subdirectories:: sudo rm /config/vkms/my-vkms/planes/*/possible_crtcs/* + sudo rm /config/vkms/my-vkms/encoders/*/possible_crtcs/* sudo rmdir /config/vkms/my-vkms/planes/* sudo rmdir /config/vkms/my-vkms/crtcs/* sudo rmdir /config/vkms/my-vkms/encoders/* diff --git a/drivers/gpu/drm/vkms/vkms_configfs.c b/drivers/gpu/drm/vkms/vkms_configfs.c index 0df86e63570a..7de601e39d2b 100644 --- a/drivers/gpu/drm/vkms/vkms_configfs.c +++ b/drivers/gpu/drm/vkms/vkms_configfs.c @@ -70,11 +70,13 @@ struct vkms_configfs_crtc { * * @group: Top level configuration group that represents a encoder. * Initialized when a new directory is created under "/config/vkms/encoders" + * @possible_crtcs_group: Default subgroup of @group at "encoder/possible_crtcs" * @dev: The vkms_configfs_device this encoder belongs to * @config: Configuration of the VKMS encoder */ struct vkms_configfs_encoder { struct config_group group; + struct config_group possible_crtcs_group; struct vkms_configfs_device *dev; struct vkms_config_encoder *config; }; @@ -100,6 +102,10 @@ struct vkms_configfs_encoder { container_of(to_config_group((item)), struct vkms_configfs_encoder, \ group) +#define encoder_possible_crtcs_item_to_vkms_configfs_encoder(item) \ + container_of(to_config_group((item)), struct vkms_configfs_encoder, \ + possible_crtcs_group) + static ssize_t crtc_writeback_show(struct config_item *item, char *page) { struct vkms_configfs_crtc *crtc; @@ -364,6 +370,52 @@ static const struct config_item_type plane_group_type = { .ct_owner = THIS_MODULE, }; +static int encoder_possible_crtcs_allow_link(struct config_item *src, + struct config_item *target) +{ + struct vkms_configfs_encoder *encoder; + struct vkms_configfs_crtc *crtc; + int ret; + + if (target->ci_type != &crtc_item_type) + return -EINVAL; + + encoder = encoder_possible_crtcs_item_to_vkms_configfs_encoder(src); + crtc = crtc_item_to_vkms_configfs_crtc(target); + + scoped_guard(mutex, &encoder->dev->lock) { + if (encoder->dev->enabled) + return -EBUSY; + + ret = vkms_config_encoder_attach_crtc(encoder->config, crtc->config); + } + + return ret; +} + +static void encoder_possible_crtcs_drop_link(struct config_item *src, + struct config_item *target) +{ + struct vkms_configfs_encoder *encoder; + struct vkms_configfs_crtc *crtc; + + encoder = encoder_possible_crtcs_item_to_vkms_configfs_encoder(src); + crtc = crtc_item_to_vkms_configfs_crtc(target); + + scoped_guard(mutex, &encoder->dev->lock) + vkms_config_encoder_detach_crtc(encoder->config, crtc->config); +} + +static struct configfs_item_operations encoder_possible_crtcs_item_operations = { + .allow_link = encoder_possible_crtcs_allow_link, + .drop_link = encoder_possible_crtcs_drop_link, +}; + +static const struct config_item_type encoder_possible_crtcs_group_type = { + .ct_item_ops = &encoder_possible_crtcs_item_operations, + .ct_owner = THIS_MODULE, +}; + static void encoder_release(struct config_item *item) { struct vkms_configfs_encoder *encoder; @@ -413,6 +465,12 @@ static struct config_group *make_encoder_group(struct config_group *group, config_group_init_type_name(&encoder->group, name, &encoder_item_type); + + config_group_init_type_name(&encoder->possible_crtcs_group, + "possible_crtcs", + &encoder_possible_crtcs_group_type); + configfs_add_default_group(&encoder->possible_crtcs_group, + &encoder->group); } return &encoder->group; -- cgit From 272acbca96a3c6f43414e10d433befe2bb906d7c Mon Sep 17 00:00:00 2001 From: Louis Chauvet Date: Thu, 16 Oct 2025 19:56:12 +0200 Subject: drm/vkms: Allow to configure multiple connectors via configfs MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Create a default subgroup at /config/vkms/connectors to allow to create as many connectors as required. Tested-by: Mark Yacoub Reviewed-by: Louis Chauvet Reviewed-by: Harry Wentland Reviewed-by: Luca Ceresoli Signed-off-by: Louis Chauvet Co-developed-by: José Expósito Signed-off-by: José Expósito Link: https://lore.kernel.org/r/20251016175618.10051-11-jose.exposito89@gmail.com Signed-off-by: Luca Ceresoli --- Documentation/gpu/vkms.rst | 6 +++ drivers/gpu/drm/vkms/vkms_configfs.c | 87 ++++++++++++++++++++++++++++++++++++ 2 files changed, 93 insertions(+) diff --git a/Documentation/gpu/vkms.rst b/Documentation/gpu/vkms.rst index 585effe90550..b799102d54ac 100644 --- a/Documentation/gpu/vkms.rst +++ b/Documentation/gpu/vkms.rst @@ -74,6 +74,7 @@ By default, the instance is disabled:: And directories are created for each configurable item of the display pipeline:: tree /config/vkms/my-vkms + ├── connectors ├── crtcs ├── enabled ├── encoders @@ -103,6 +104,10 @@ Next, create one or more encoders:: sudo mkdir /config/vkms/my-vkms/encoders/encoder0 +Last but not least, create one or more connectors:: + + sudo mkdir /config/vkms/my-vkms/connectors/connector0 + To finish the configuration, link the different pipeline items:: sudo ln -s /config/vkms/my-vkms/crtcs/crtc0 /config/vkms/my-vkms/planes/plane0/possible_crtcs @@ -127,6 +132,7 @@ And removing the top level directory and its subdirectories:: sudo rmdir /config/vkms/my-vkms/planes/* sudo rmdir /config/vkms/my-vkms/crtcs/* sudo rmdir /config/vkms/my-vkms/encoders/* + sudo rmdir /config/vkms/my-vkms/connectors/* sudo rmdir /config/vkms/my-vkms Testing With IGT diff --git a/drivers/gpu/drm/vkms/vkms_configfs.c b/drivers/gpu/drm/vkms/vkms_configfs.c index 7de601e39d2b..692e1b708012 100644 --- a/drivers/gpu/drm/vkms/vkms_configfs.c +++ b/drivers/gpu/drm/vkms/vkms_configfs.c @@ -19,6 +19,7 @@ static bool is_configfs_registered; * @planes_group: Default subgroup of @group at "/config/vkms/planes" * @crtcs_group: Default subgroup of @group at "/config/vkms/crtcs" * @encoders_group: Default subgroup of @group at "/config/vkms/encoders" + * @connectors_group: Default subgroup of @group at "/config/vkms/connectors" * @lock: Lock used to project concurrent access to the configuration attributes * @config: Protected by @lock. Configuration of the VKMS device * @enabled: Protected by @lock. The device is created or destroyed when this @@ -29,6 +30,7 @@ struct vkms_configfs_device { struct config_group planes_group; struct config_group crtcs_group; struct config_group encoders_group; + struct config_group connectors_group; struct mutex lock; struct vkms_config *config; @@ -81,6 +83,20 @@ struct vkms_configfs_encoder { struct vkms_config_encoder *config; }; +/** + * struct vkms_configfs_connector - Configfs representation of a connector + * + * @group: Top level configuration group that represents a connector. + * Initialized when a new directory is created under "/config/vkms/connectors" + * @dev: The vkms_configfs_device this connector belongs to + * @config: Configuration of the VKMS connector + */ +struct vkms_configfs_connector { + struct config_group group; + struct vkms_configfs_device *dev; + struct vkms_config_connector *config; +}; + #define device_item_to_vkms_configfs_device(item) \ container_of(to_config_group((item)), struct vkms_configfs_device, \ group) @@ -106,6 +122,10 @@ struct vkms_configfs_encoder { container_of(to_config_group((item)), struct vkms_configfs_encoder, \ possible_crtcs_group) +#define connector_item_to_vkms_configfs_connector(item) \ + container_of(to_config_group((item)), struct vkms_configfs_connector, \ + group) + static ssize_t crtc_writeback_show(struct config_item *item, char *page) { struct vkms_configfs_crtc *crtc; @@ -485,6 +505,69 @@ static const struct config_item_type encoder_group_type = { .ct_owner = THIS_MODULE, }; +static void connector_release(struct config_item *item) +{ + struct vkms_configfs_connector *connector; + struct mutex *lock; + + connector = connector_item_to_vkms_configfs_connector(item); + lock = &connector->dev->lock; + + scoped_guard(mutex, lock) { + vkms_config_destroy_connector(connector->config); + kfree(connector); + } +} + +static struct configfs_item_operations connector_item_operations = { + .release = &connector_release, +}; + +static const struct config_item_type connector_item_type = { + .ct_item_ops = &connector_item_operations, + .ct_owner = THIS_MODULE, +}; + +static struct config_group *make_connector_group(struct config_group *group, + const char *name) +{ + struct vkms_configfs_device *dev; + struct vkms_configfs_connector *connector; + + dev = child_group_to_vkms_configfs_device(group); + + scoped_guard(mutex, &dev->lock) { + if (dev->enabled) + return ERR_PTR(-EBUSY); + + connector = kzalloc(sizeof(*connector), GFP_KERNEL); + if (!connector) + return ERR_PTR(-ENOMEM); + + connector->dev = dev; + + connector->config = vkms_config_create_connector(dev->config); + if (IS_ERR(connector->config)) { + kfree(connector); + return ERR_CAST(connector->config); + } + + config_group_init_type_name(&connector->group, name, + &connector_item_type); + } + + return &connector->group; +} + +static struct configfs_group_operations connectors_group_operations = { + .make_group = &make_connector_group, +}; + +static const struct config_item_type connector_group_type = { + .ct_group_ops = &connectors_group_operations, + .ct_owner = THIS_MODULE, +}; + static ssize_t device_enabled_show(struct config_item *item, char *page) { struct vkms_configfs_device *dev; @@ -592,6 +675,10 @@ static struct config_group *make_device_group(struct config_group *group, &encoder_group_type); configfs_add_default_group(&dev->encoders_group, &dev->group); + config_group_init_type_name(&dev->connectors_group, "connectors", + &connector_group_type); + configfs_add_default_group(&dev->connectors_group, &dev->group); + return &dev->group; } -- cgit From 64229b846a7e5b54cc076092475280888f74c92c Mon Sep 17 00:00:00 2001 From: Louis Chauvet Date: Thu, 16 Oct 2025 19:56:13 +0200 Subject: drm/vkms: Allow to attach connectors and encoders via configfs MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Create a default subgroup at /config/vkms/connectors/connector/possible_encoders that will contain symbolic links to the possible encoders for the connector. Tested-by: Mark Yacoub Reviewed-by: Louis Chauvet Reviewed-by: Harry Wentland Reviewed-by: Luca Ceresoli Signed-off-by: Louis Chauvet Co-developed-by: José Expósito Signed-off-by: José Expósito Link: https://lore.kernel.org/r/20251016175618.10051-12-jose.exposito89@gmail.com Signed-off-by: Luca Ceresoli --- Documentation/gpu/vkms.rst | 2 ++ drivers/gpu/drm/vkms/vkms_configfs.c | 62 ++++++++++++++++++++++++++++++++++++ 2 files changed, 64 insertions(+) diff --git a/Documentation/gpu/vkms.rst b/Documentation/gpu/vkms.rst index b799102d54ac..31a3880ad83c 100644 --- a/Documentation/gpu/vkms.rst +++ b/Documentation/gpu/vkms.rst @@ -112,6 +112,7 @@ To finish the configuration, link the different pipeline items:: sudo ln -s /config/vkms/my-vkms/crtcs/crtc0 /config/vkms/my-vkms/planes/plane0/possible_crtcs sudo ln -s /config/vkms/my-vkms/crtcs/crtc0 /config/vkms/my-vkms/encoders/encoder0/possible_crtcs + sudo ln -s /config/vkms/my-vkms/encoders/encoder0 /config/vkms/my-vkms/connectors/connector0/possible_encoders Since at least one primary plane is required, make sure to set the right type:: @@ -129,6 +130,7 @@ And removing the top level directory and its subdirectories:: sudo rm /config/vkms/my-vkms/planes/*/possible_crtcs/* sudo rm /config/vkms/my-vkms/encoders/*/possible_crtcs/* + sudo rm /config/vkms/my-vkms/connectors/*/possible_encoders/* sudo rmdir /config/vkms/my-vkms/planes/* sudo rmdir /config/vkms/my-vkms/crtcs/* sudo rmdir /config/vkms/my-vkms/encoders/* diff --git a/drivers/gpu/drm/vkms/vkms_configfs.c b/drivers/gpu/drm/vkms/vkms_configfs.c index 692e1b708012..8e90acbebd6a 100644 --- a/drivers/gpu/drm/vkms/vkms_configfs.c +++ b/drivers/gpu/drm/vkms/vkms_configfs.c @@ -88,11 +88,14 @@ struct vkms_configfs_encoder { * * @group: Top level configuration group that represents a connector. * Initialized when a new directory is created under "/config/vkms/connectors" + * @possible_encoders_group: Default subgroup of @group at + * "connector/possible_encoders" * @dev: The vkms_configfs_device this connector belongs to * @config: Configuration of the VKMS connector */ struct vkms_configfs_connector { struct config_group group; + struct config_group possible_encoders_group; struct vkms_configfs_device *dev; struct vkms_config_connector *config; }; @@ -126,6 +129,10 @@ struct vkms_configfs_connector { container_of(to_config_group((item)), struct vkms_configfs_connector, \ group) +#define connector_possible_encoders_item_to_vkms_configfs_connector(item) \ + container_of(to_config_group((item)), struct vkms_configfs_connector, \ + possible_encoders_group) + static ssize_t crtc_writeback_show(struct config_item *item, char *page) { struct vkms_configfs_crtc *crtc; @@ -528,6 +535,55 @@ static const struct config_item_type connector_item_type = { .ct_owner = THIS_MODULE, }; +static int connector_possible_encoders_allow_link(struct config_item *src, + struct config_item *target) +{ + struct vkms_configfs_connector *connector; + struct vkms_configfs_encoder *encoder; + int ret; + + if (target->ci_type != &encoder_item_type) + return -EINVAL; + + connector = connector_possible_encoders_item_to_vkms_configfs_connector(src); + encoder = encoder_item_to_vkms_configfs_encoder(target); + + scoped_guard(mutex, &connector->dev->lock) { + if (connector->dev->enabled) + return -EBUSY; + + ret = vkms_config_connector_attach_encoder(connector->config, + encoder->config); + } + + return ret; +} + +static void connector_possible_encoders_drop_link(struct config_item *src, + struct config_item *target) +{ + struct vkms_configfs_connector *connector; + struct vkms_configfs_encoder *encoder; + + connector = connector_possible_encoders_item_to_vkms_configfs_connector(src); + encoder = encoder_item_to_vkms_configfs_encoder(target); + + scoped_guard(mutex, &connector->dev->lock) { + vkms_config_connector_detach_encoder(connector->config, + encoder->config); + } +} + +static struct configfs_item_operations connector_possible_encoders_item_operations = { + .allow_link = connector_possible_encoders_allow_link, + .drop_link = connector_possible_encoders_drop_link, +}; + +static const struct config_item_type connector_possible_encoders_group_type = { + .ct_item_ops = &connector_possible_encoders_item_operations, + .ct_owner = THIS_MODULE, +}; + static struct config_group *make_connector_group(struct config_group *group, const char *name) { @@ -554,6 +610,12 @@ static struct config_group *make_connector_group(struct config_group *group, config_group_init_type_name(&connector->group, name, &connector_item_type); + + config_group_init_type_name(&connector->possible_encoders_group, + "possible_encoders", + &connector_possible_encoders_group_type); + configfs_add_default_group(&connector->possible_encoders_group, + &connector->group); } return &connector->group; -- cgit From 8c29107a6119289b57d2a80a9db849c4bda66a74 Mon Sep 17 00:00:00 2001 From: José Expósito Date: Thu, 16 Oct 2025 19:56:14 +0200 Subject: drm/vkms: Allow to configure the default device creation MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Add a new module param to allow to create or not the default VKMS instance. Useful when combined with configfs to avoid having additional VKMS instances. Tested-by: Mark Yacoub Reviewed-by: Louis Chauvet Reviewed-by: Harry Wentland Reviewed-by: Luca Ceresoli Signed-off-by: José Expósito Link: https://lore.kernel.org/r/20251016175618.10051-13-jose.exposito89@gmail.com Signed-off-by: Luca Ceresoli --- drivers/gpu/drm/vkms/vkms_drv.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/gpu/drm/vkms/vkms_drv.c b/drivers/gpu/drm/vkms/vkms_drv.c index c1f23e6a4b07..6d299903fab2 100644 --- a/drivers/gpu/drm/vkms/vkms_drv.c +++ b/drivers/gpu/drm/vkms/vkms_drv.c @@ -50,6 +50,10 @@ static bool enable_overlay; module_param_named(enable_overlay, enable_overlay, bool, 0444); MODULE_PARM_DESC(enable_overlay, "Enable/Disable overlay support"); +static bool create_default_dev = true; +module_param_named(create_default_dev, create_default_dev, bool, 0444); +MODULE_PARM_DESC(create_default_dev, "Create or not the default VKMS device"); + DEFINE_DRM_GEM_FOPS(vkms_driver_fops); static void vkms_atomic_commit_tail(struct drm_atomic_state *old_state) @@ -219,6 +223,9 @@ static int __init vkms_init(void) if (ret) return ret; + if (!create_default_dev) + return 0; + config = vkms_config_default_create(enable_cursor, enable_writeback, enable_overlay); if (IS_ERR(config)) return PTR_ERR(config); -- cgit From 085dadb3101d7c37d8296580c946f5f1a2153628 Mon Sep 17 00:00:00 2001 From: José Expósito Date: Thu, 16 Oct 2025 19:56:15 +0200 Subject: drm/vkms: Remove completed task from the TODO list MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Remove the configfs related TODO items from the "Runtime Configuration" section. Tested-by: Mark Yacoub Reviewed-by: Louis Chauvet Reviewed-by: Harry Wentland Reviewed-by: Luca Ceresoli Signed-off-by: José Expósito Link: https://lore.kernel.org/r/20251016175618.10051-14-jose.exposito89@gmail.com Signed-off-by: Luca Ceresoli --- Documentation/gpu/vkms.rst | 9 +-------- 1 file changed, 1 insertion(+), 8 deletions(-) diff --git a/Documentation/gpu/vkms.rst b/Documentation/gpu/vkms.rst index 31a3880ad83c..364b574a8cae 100644 --- a/Documentation/gpu/vkms.rst +++ b/Documentation/gpu/vkms.rst @@ -233,21 +233,14 @@ Runtime Configuration --------------------- We want to be able to reconfigure vkms instance without having to reload the -module. Use/Test-cases: +module through configfs. Use/Test-cases: - Hotplug/hotremove connectors on the fly (to be able to test DP MST handling of compositors). -- Configure planes/crtcs/connectors (we'd need some code to have more than 1 of - them first). - - Change output configuration: Plug/unplug screens, change EDID, allow changing the refresh rate. -The currently proposed solution is to expose vkms configuration through -configfs. All existing module options should be supported through configfs -too. - Writeback support ----------------- -- cgit From 6f00987f5ce39bfbc01af7230d3939149b006f74 Mon Sep 17 00:00:00 2001 From: José Expósito Date: Thu, 16 Oct 2025 19:56:16 +0200 Subject: drm/vkms: Allow to configure connector status MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Allow to store the connector status in vkms_config_connector and add a getter and a setter functions as well a KUnit test. This change only adds the configuration, the connector status is not used yet. Tested-by: Mark Yacoub Reviewed-by: Louis Chauvet Reviewed-by: Harry Wentland Reviewed-by: Luca Ceresoli Signed-off-by: José Expósito Link: https://lore.kernel.org/r/20251016175618.10051-15-jose.exposito89@gmail.com Signed-off-by: Luca Ceresoli --- drivers/gpu/drm/vkms/tests/vkms_config_test.c | 24 ++++++++++++++++++++++++ drivers/gpu/drm/vkms/vkms_config.c | 8 ++++++-- drivers/gpu/drm/vkms/vkms_config.h | 26 ++++++++++++++++++++++++++ 3 files changed, 56 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/vkms/tests/vkms_config_test.c b/drivers/gpu/drm/vkms/tests/vkms_config_test.c index b0d78a81d2df..d75a6252e4d2 100644 --- a/drivers/gpu/drm/vkms/tests/vkms_config_test.c +++ b/drivers/gpu/drm/vkms/tests/vkms_config_test.c @@ -957,6 +957,29 @@ static void vkms_config_test_connector_get_possible_encoders(struct kunit *test) vkms_config_destroy(config); } +static void vkms_config_test_connector_status(struct kunit *test) +{ + struct vkms_config *config; + struct vkms_config_connector *connector_cfg; + enum drm_connector_status status; + + config = vkms_config_create("test"); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, config); + + connector_cfg = vkms_config_create_connector(config); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, connector_cfg); + + status = vkms_config_connector_get_status(connector_cfg); + KUNIT_EXPECT_EQ(test, status, connector_status_connected); + + vkms_config_connector_set_status(connector_cfg, + connector_status_disconnected); + status = vkms_config_connector_get_status(connector_cfg); + KUNIT_EXPECT_EQ(test, status, connector_status_disconnected); + + vkms_config_destroy(config); +} + static struct kunit_case vkms_config_test_cases[] = { KUNIT_CASE(vkms_config_test_empty_config), KUNIT_CASE_PARAM(vkms_config_test_default_config, @@ -978,6 +1001,7 @@ static struct kunit_case vkms_config_test_cases[] = { KUNIT_CASE(vkms_config_test_plane_get_possible_crtcs), KUNIT_CASE(vkms_config_test_encoder_get_possible_crtcs), KUNIT_CASE(vkms_config_test_connector_get_possible_encoders), + KUNIT_CASE(vkms_config_test_connector_status), {} }; diff --git a/drivers/gpu/drm/vkms/vkms_config.c b/drivers/gpu/drm/vkms/vkms_config.c index a1df5659b0fb..f8394a063ecf 100644 --- a/drivers/gpu/drm/vkms/vkms_config.c +++ b/drivers/gpu/drm/vkms/vkms_config.c @@ -361,8 +361,11 @@ static int vkms_config_show(struct seq_file *m, void *data) vkms_config_for_each_encoder(vkmsdev->config, encoder_cfg) seq_puts(m, "encoder\n"); - vkms_config_for_each_connector(vkmsdev->config, connector_cfg) - seq_puts(m, "connector\n"); + vkms_config_for_each_connector(vkmsdev->config, connector_cfg) { + seq_puts(m, "connector:\n"); + seq_printf(m, "\tstatus=%d\n", + vkms_config_connector_get_status(connector_cfg)); + } return 0; } @@ -588,6 +591,7 @@ struct vkms_config_connector *vkms_config_create_connector(struct vkms_config *c return ERR_PTR(-ENOMEM); connector_cfg->config = config; + connector_cfg->status = connector_status_connected; xa_init_flags(&connector_cfg->possible_encoders, XA_FLAGS_ALLOC); list_add_tail(&connector_cfg->link, &config->connectors); diff --git a/drivers/gpu/drm/vkms/vkms_config.h b/drivers/gpu/drm/vkms/vkms_config.h index 0118e3f99706..4c8d668e7ef8 100644 --- a/drivers/gpu/drm/vkms/vkms_config.h +++ b/drivers/gpu/drm/vkms/vkms_config.h @@ -7,6 +7,8 @@ #include #include +#include + #include "vkms_drv.h" /** @@ -99,6 +101,7 @@ struct vkms_config_encoder { * * @link: Link to the others connector in vkms_config * @config: The vkms_config this connector belongs to + * @status: Status (connected, disconnected...) of the connector * @possible_encoders: Array of encoders that can be used with this connector * @connector: Internal usage. This pointer should never be considered as valid. * It can be used to store a temporary reference to a VKMS connector @@ -109,6 +112,7 @@ struct vkms_config_connector { struct list_head link; struct vkms_config *config; + enum drm_connector_status status; struct xarray possible_encoders; /* Internal usage */ @@ -434,4 +438,26 @@ int __must_check vkms_config_connector_attach_encoder(struct vkms_config_connect void vkms_config_connector_detach_encoder(struct vkms_config_connector *connector_cfg, struct vkms_config_encoder *encoder_cfg); +/** + * vkms_config_connector_get_status() - Return the status of the connector + * @connector_cfg: Connector to get the status from + */ +static inline enum drm_connector_status +vkms_config_connector_get_status(struct vkms_config_connector *connector_cfg) +{ + return connector_cfg->status; +} + +/** + * vkms_config_connector_set_status() - Set the status of the connector + * @connector_cfg: Connector to set the status to + * @status: New connector status + */ +static inline void +vkms_config_connector_set_status(struct vkms_config_connector *connector_cfg, + enum drm_connector_status status) +{ + connector_cfg->status = status; +} + #endif /* _VKMS_CONFIG_H_ */ -- cgit From 466f43885ac0b75efe8107d82f7c60d7daf64f54 Mon Sep 17 00:00:00 2001 From: José Expósito Date: Thu, 16 Oct 2025 19:56:17 +0200 Subject: drm/vkms: Allow to update the connector status MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Implement the drm_connector_funcs.detect() callback to update the connector status by returning the status stored in the configuration. Tested-by: Mark Yacoub Reviewed-by: Louis Chauvet Reviewed-by: Harry Wentland Reviewed-by: Luca Ceresoli Signed-off-by: José Expósito Link: https://lore.kernel.org/r/20251016175618.10051-16-jose.exposito89@gmail.com Signed-off-by: Luca Ceresoli --- drivers/gpu/drm/vkms/vkms_connector.c | 28 ++++++++++++++++++++++++++++ drivers/gpu/drm/vkms/vkms_connector.h | 3 +++ 2 files changed, 31 insertions(+) diff --git a/drivers/gpu/drm/vkms/vkms_connector.c b/drivers/gpu/drm/vkms/vkms_connector.c index 48b10cba322a..89fa8d9d739b 100644 --- a/drivers/gpu/drm/vkms/vkms_connector.c +++ b/drivers/gpu/drm/vkms/vkms_connector.c @@ -5,9 +5,37 @@ #include #include +#include "vkms_config.h" #include "vkms_connector.h" +static enum drm_connector_status vkms_connector_detect(struct drm_connector *connector, + bool force) +{ + struct drm_device *dev = connector->dev; + struct vkms_device *vkmsdev = drm_device_to_vkms_device(dev); + struct vkms_connector *vkms_connector; + enum drm_connector_status status; + struct vkms_config_connector *connector_cfg; + + vkms_connector = drm_connector_to_vkms_connector(connector); + + /* + * The connector configuration might not exist if its configfs directory + * was deleted. Therefore, use the configuration if present or keep the + * current status if we can not access it anymore. + */ + status = connector->status; + + vkms_config_for_each_connector(vkmsdev->config, connector_cfg) { + if (connector_cfg->connector == vkms_connector) + status = vkms_config_connector_get_status(connector_cfg); + } + + return status; +} + static const struct drm_connector_funcs vkms_connector_funcs = { + .detect = vkms_connector_detect, .fill_modes = drm_helper_probe_single_connector_modes, .reset = drm_atomic_helper_connector_reset, .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, diff --git a/drivers/gpu/drm/vkms/vkms_connector.h b/drivers/gpu/drm/vkms/vkms_connector.h index c9149c1b7af0..90f835f70b3b 100644 --- a/drivers/gpu/drm/vkms/vkms_connector.h +++ b/drivers/gpu/drm/vkms/vkms_connector.h @@ -5,6 +5,9 @@ #include "vkms_drv.h" +#define drm_connector_to_vkms_connector(target) \ + container_of(target, struct vkms_connector, base) + /** * struct vkms_connector - VKMS custom type wrapping around the DRM connector * -- cgit From f97180f094aed00bae9776f00ae61c7c020b4d79 Mon Sep 17 00:00:00 2001 From: José Expósito Date: Thu, 16 Oct 2025 19:56:18 +0200 Subject: drm/vkms: Allow to configure connector status via configfs MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit When a connector is created, add a `status` file to allow to update the connector status to: - 1 connector_status_connected - 2 connector_status_disconnected - 3 connector_status_unknown If the device is enabled, updating the status hot-plug or unplugs the connector. Tested-by: Mark Yacoub Reviewed-by: Louis Chauvet Reviewed-by: Harry Wentland Reviewed-by: Luca Ceresoli Signed-off-by: José Expósito Link: https://lore.kernel.org/r/20251016175618.10051-17-jose.exposito89@gmail.com Signed-off-by: Luca Ceresoli --- Documentation/gpu/vkms.rst | 5 ++++ drivers/gpu/drm/vkms/vkms_configfs.c | 48 +++++++++++++++++++++++++++++++++++ drivers/gpu/drm/vkms/vkms_connector.c | 7 +++++ drivers/gpu/drm/vkms/vkms_connector.h | 6 +++++ 4 files changed, 66 insertions(+) diff --git a/Documentation/gpu/vkms.rst b/Documentation/gpu/vkms.rst index 364b574a8cae..3574e01b928d 100644 --- a/Documentation/gpu/vkms.rst +++ b/Documentation/gpu/vkms.rst @@ -108,6 +108,11 @@ Last but not least, create one or more connectors:: sudo mkdir /config/vkms/my-vkms/connectors/connector0 +Connectors have 1 configurable attribute: + +- status: Connection status: 1 connected, 2 disconnected, 3 unknown (same values + as those exposed by the "status" property of a connector) + To finish the configuration, link the different pipeline items:: sudo ln -s /config/vkms/my-vkms/crtcs/crtc0 /config/vkms/my-vkms/planes/plane0/possible_crtcs diff --git a/drivers/gpu/drm/vkms/vkms_configfs.c b/drivers/gpu/drm/vkms/vkms_configfs.c index 8e90acbebd6a..07ab794e1052 100644 --- a/drivers/gpu/drm/vkms/vkms_configfs.c +++ b/drivers/gpu/drm/vkms/vkms_configfs.c @@ -7,6 +7,7 @@ #include "vkms_drv.h" #include "vkms_config.h" #include "vkms_configfs.h" +#include "vkms_connector.h" /* To avoid registering configfs more than once or unregistering on error */ static bool is_configfs_registered; @@ -512,6 +513,52 @@ static const struct config_item_type encoder_group_type = { .ct_owner = THIS_MODULE, }; +static ssize_t connector_status_show(struct config_item *item, char *page) +{ + struct vkms_configfs_connector *connector; + enum drm_connector_status status; + + connector = connector_item_to_vkms_configfs_connector(item); + + scoped_guard(mutex, &connector->dev->lock) + status = vkms_config_connector_get_status(connector->config); + + return sprintf(page, "%u", status); +} + +static ssize_t connector_status_store(struct config_item *item, + const char *page, size_t count) +{ + struct vkms_configfs_connector *connector; + enum drm_connector_status status; + + connector = connector_item_to_vkms_configfs_connector(item); + + if (kstrtouint(page, 10, &status)) + return -EINVAL; + + if (status != connector_status_connected && + status != connector_status_disconnected && + status != connector_status_unknown) + return -EINVAL; + + scoped_guard(mutex, &connector->dev->lock) { + vkms_config_connector_set_status(connector->config, status); + + if (connector->dev->enabled) + vkms_trigger_connector_hotplug(connector->dev->config->dev); + } + + return (ssize_t)count; +} + +CONFIGFS_ATTR(connector_, status); + +static struct configfs_attribute *connector_item_attrs[] = { + &connector_attr_status, + NULL, +}; + static void connector_release(struct config_item *item) { struct vkms_configfs_connector *connector; @@ -531,6 +578,7 @@ static struct configfs_item_operations connector_item_operations = { }; static const struct config_item_type connector_item_type = { + .ct_attrs = connector_item_attrs, .ct_item_ops = &connector_item_operations, .ct_owner = THIS_MODULE, }; diff --git a/drivers/gpu/drm/vkms/vkms_connector.c b/drivers/gpu/drm/vkms/vkms_connector.c index 89fa8d9d739b..b0a6b212d3f4 100644 --- a/drivers/gpu/drm/vkms/vkms_connector.c +++ b/drivers/gpu/drm/vkms/vkms_connector.c @@ -87,3 +87,10 @@ struct vkms_connector *vkms_connector_init(struct vkms_device *vkmsdev) return connector; } + +void vkms_trigger_connector_hotplug(struct vkms_device *vkmsdev) +{ + struct drm_device *dev = &vkmsdev->drm; + + drm_kms_helper_hotplug_event(dev); +} diff --git a/drivers/gpu/drm/vkms/vkms_connector.h b/drivers/gpu/drm/vkms/vkms_connector.h index 90f835f70b3b..ed312f4eff3a 100644 --- a/drivers/gpu/drm/vkms/vkms_connector.h +++ b/drivers/gpu/drm/vkms/vkms_connector.h @@ -26,4 +26,10 @@ struct vkms_connector { */ struct vkms_connector *vkms_connector_init(struct vkms_device *vkmsdev); +/** + * vkms_trigger_connector_hotplug() - Update the device's connectors status + * @vkmsdev: VKMS device to update + */ +void vkms_trigger_connector_hotplug(struct vkms_device *vkmsdev); + #endif /* _VKMS_CONNECTOR_H_ */ -- cgit From b36ca97592118196389e9cd7fa18226e955e33f7 Mon Sep 17 00:00:00 2001 From: Thomas Zimmermann Date: Mon, 20 Oct 2025 14:52:02 +0200 Subject: drm/sysfb: Use new CRTC state in begin_fb_access MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Retrieve the CRTC's new state with drm_atomic_get_new_crtc_state() in drm_sysfb_plane_helper_begin_fb_access(). The blit function might be incorrect otherwise. Signed-off-by: Thomas Zimmermann Fixes: cb71de092553 ("drm/sysfb: Lookup blit function during atomic check") Reported-by: Ville Syrjälä Closes: https://lore.kernel.org/dri-devel/aPJrs7_u8KcalNsC@intel.com/ Cc: Thomas Zimmermann Cc: Javier Martinez Canillas Cc: dri-devel@lists.freedesktop.org Reviewed-by: Javier Martinez Canillas Link: https://lore.kernel.org/r/20251020125227.41308-1-tzimmermann@suse.de --- drivers/gpu/drm/sysfb/drm_sysfb_modeset.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/sysfb/drm_sysfb_modeset.c b/drivers/gpu/drm/sysfb/drm_sysfb_modeset.c index 8517c490e815..6214b7709b37 100644 --- a/drivers/gpu/drm/sysfb/drm_sysfb_modeset.c +++ b/drivers/gpu/drm/sysfb/drm_sysfb_modeset.c @@ -258,7 +258,7 @@ int drm_sysfb_plane_helper_begin_fb_access(struct drm_plane *plane, ret = -EINVAL; - crtc_state = drm_atomic_get_crtc_state(plane_state->state, plane_state->crtc); + crtc_state = drm_atomic_get_new_crtc_state(plane_state->state, plane_state->crtc); if (drm_WARN_ON_ONCE(dev, !crtc_state)) goto err_drm_gem_end_shadow_fb_access; sysfb_crtc_state = to_drm_sysfb_crtc_state(crtc_state); -- cgit From 550f4dd2ceddadfb2f21ec9237c88e701a2e49b3 Mon Sep 17 00:00:00 2001 From: Maciej Falkowski Date: Wed, 22 Oct 2025 12:53:48 +0200 Subject: accel/ivpu: Add support for Nova Lake's NPU Add support for NPU6 generation that will be present on Nova Lake CPUs. As with previous generations, it maintains compatibility so no bigger functional changes apart from removing deprecated call to soc_cpu_drive() function. Quiescing TOP_MMIO in SOC_CPU_NOC as part of boot procedure is no longer needed starting from 60XX. Remove soc_cpu_drive() call from NPU6 onward. The VPU_CPU_NOC_QREQN, VPU_CPU_NOC_QACCEPTN, and VPU_CPU_NOC_QDENY registers are deprecated and non-functional on 60XX. They will be removed in future generations. Signed-off-by: Karol Wachowski Reviewed-by: Jeff Hugo Signed-off-by: Maciej Falkowski Link: https://lore.kernel.org/r/20251022105348.2237273-1-maciej.falkowski@linux.intel.com --- drivers/accel/ivpu/ivpu_drv.c | 1 + drivers/accel/ivpu/ivpu_drv.h | 4 ++++ drivers/accel/ivpu/ivpu_fw.c | 2 ++ drivers/accel/ivpu/ivpu_hw_ip.c | 10 ++++++++++ 4 files changed, 17 insertions(+) diff --git a/drivers/accel/ivpu/ivpu_drv.c b/drivers/accel/ivpu/ivpu_drv.c index 1792d0bbec71..c6fe7a408912 100644 --- a/drivers/accel/ivpu/ivpu_drv.c +++ b/drivers/accel/ivpu/ivpu_drv.c @@ -707,6 +707,7 @@ static struct pci_device_id ivpu_pci_ids[] = { { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_LNL) }, { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_PTL_P) }, { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_WCL) }, + { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_NVL) }, { } }; MODULE_DEVICE_TABLE(pci, ivpu_pci_ids); diff --git a/drivers/accel/ivpu/ivpu_drv.h b/drivers/accel/ivpu/ivpu_drv.h index 62ab1c654e63..98b274a8567f 100644 --- a/drivers/accel/ivpu/ivpu_drv.h +++ b/drivers/accel/ivpu/ivpu_drv.h @@ -27,6 +27,7 @@ #define PCI_DEVICE_ID_LNL 0x643e #define PCI_DEVICE_ID_PTL_P 0xb03e #define PCI_DEVICE_ID_WCL 0xfd3e +#define PCI_DEVICE_ID_NVL 0xd71d #define IVPU_HW_IP_37XX 37 #define IVPU_HW_IP_40XX 40 @@ -245,6 +246,8 @@ static inline int ivpu_hw_ip_gen(struct ivpu_device *vdev) case PCI_DEVICE_ID_PTL_P: case PCI_DEVICE_ID_WCL: return IVPU_HW_IP_50XX; + case PCI_DEVICE_ID_NVL: + return IVPU_HW_IP_60XX; default: dump_stack(); ivpu_err(vdev, "Unknown NPU IP generation\n"); @@ -261,6 +264,7 @@ static inline int ivpu_hw_btrs_gen(struct ivpu_device *vdev) case PCI_DEVICE_ID_LNL: case PCI_DEVICE_ID_PTL_P: case PCI_DEVICE_ID_WCL: + case PCI_DEVICE_ID_NVL: return IVPU_HW_BTRS_LNL; default: dump_stack(); diff --git a/drivers/accel/ivpu/ivpu_fw.c b/drivers/accel/ivpu/ivpu_fw.c index be1290be77fd..aa032b39dbe3 100644 --- a/drivers/accel/ivpu/ivpu_fw.c +++ b/drivers/accel/ivpu/ivpu_fw.c @@ -56,12 +56,14 @@ static struct { { IVPU_HW_IP_40XX, "intel/vpu/vpu_40xx_v0.0.bin" }, { IVPU_HW_IP_50XX, "intel/vpu/vpu_50xx_v1.bin" }, { IVPU_HW_IP_50XX, "intel/vpu/vpu_50xx_v0.0.bin" }, + { IVPU_HW_IP_60XX, "intel/vpu/vpu_60xx_v1.bin" }, }; /* Production fw_names from the table above */ MODULE_FIRMWARE("intel/vpu/vpu_37xx_v1.bin"); MODULE_FIRMWARE("intel/vpu/vpu_40xx_v1.bin"); MODULE_FIRMWARE("intel/vpu/vpu_50xx_v1.bin"); +MODULE_FIRMWARE("intel/vpu/vpu_60xx_v1.bin"); static int ivpu_fw_request(struct ivpu_device *vdev) { diff --git a/drivers/accel/ivpu/ivpu_hw_ip.c b/drivers/accel/ivpu/ivpu_hw_ip.c index 2bf9882ab52e..06aa1e7dc50b 100644 --- a/drivers/accel/ivpu/ivpu_hw_ip.c +++ b/drivers/accel/ivpu/ivpu_hw_ip.c @@ -691,6 +691,13 @@ static void pwr_island_delay_set(struct ivpu_device *vdev) status = high ? 46 : 3; break; + case PCI_DEVICE_ID_NVL: + post = high ? 198 : 17; + post1 = 0; + post2 = high ? 198 : 17; + status = 0; + break; + default: dump_stack(); ivpu_err(vdev, "Unknown device ID\n"); @@ -889,6 +896,9 @@ static int soc_cpu_drive_40xx(struct ivpu_device *vdev, bool enable) static int soc_cpu_enable(struct ivpu_device *vdev) { + if (ivpu_hw_ip_gen(vdev) >= IVPU_HW_IP_60XX) + return 0; + return soc_cpu_drive_40xx(vdev, true); } -- cgit From a16f6ba43d9d19996ace3aa08218fa399009f4b7 Mon Sep 17 00:00:00 2001 From: Thomas Zimmermann Date: Thu, 9 Oct 2025 15:16:28 +0200 Subject: drm/client: Add client free callback to unprepare fb_helper Add free callback to struct drm_client_funcs. Invoke function to free the client memory as part of the release process. Implement free for fbdev emulation. Fbdev emulation allocates and prepares client memory in drm_fbdev_client_setup(). The release happens in fb_destroy from struct fb_ops. Multiple implementations of this callback exist in the various drivers that provide an fbdev implementation. Each of them needs to follow the implementation details of the fbdev setup code. Adding a free callback for the client puts the unprepare and release of the fbdev client in a single place. Signed-off-by: Thomas Zimmermann Reviewed-by: Dmitry Baryshkov # core, msm Acked-by: Tomi Valkeinen # omapdrm Acked-by: Patrik Jakobsson # gma500 Acked-by: Alex Deucher Link: https://lore.kernel.org/r/20251009132006.45834-2-tzimmermann@suse.de --- drivers/gpu/drm/armada/armada_fbdev.c | 2 -- drivers/gpu/drm/clients/drm_fbdev_client.c | 17 +++++++++++++++-- drivers/gpu/drm/drm_client.c | 4 ++++ drivers/gpu/drm/drm_fbdev_dma.c | 4 ---- drivers/gpu/drm/drm_fbdev_shmem.c | 2 -- drivers/gpu/drm/drm_fbdev_ttm.c | 2 -- drivers/gpu/drm/exynos/exynos_drm_fbdev.c | 2 -- drivers/gpu/drm/gma500/fbdev.c | 3 --- drivers/gpu/drm/i915/display/intel_fbdev.c | 2 -- drivers/gpu/drm/msm/msm_fbdev.c | 2 -- drivers/gpu/drm/omapdrm/omap_fbdev.c | 2 -- drivers/gpu/drm/radeon/radeon_fbdev.c | 2 -- drivers/gpu/drm/tegra/fbdev.c | 2 -- include/drm/drm_client.h | 10 ++++++++++ 14 files changed, 29 insertions(+), 27 deletions(-) diff --git a/drivers/gpu/drm/armada/armada_fbdev.c b/drivers/gpu/drm/armada/armada_fbdev.c index cb53cc91bafb..22e2081bfa04 100644 --- a/drivers/gpu/drm/armada/armada_fbdev.c +++ b/drivers/gpu/drm/armada/armada_fbdev.c @@ -28,8 +28,6 @@ static void armada_fbdev_fb_destroy(struct fb_info *info) fbh->fb->funcs->destroy(fbh->fb); drm_client_release(&fbh->client); - drm_fb_helper_unprepare(fbh); - kfree(fbh); } static const struct fb_ops armada_fb_ops = { diff --git a/drivers/gpu/drm/clients/drm_fbdev_client.c b/drivers/gpu/drm/clients/drm_fbdev_client.c index ec5ab9f30547..47e5f27eee58 100644 --- a/drivers/gpu/drm/clients/drm_fbdev_client.c +++ b/drivers/gpu/drm/clients/drm_fbdev_client.c @@ -13,16 +13,28 @@ * struct drm_client_funcs */ +static void drm_fbdev_client_free(struct drm_client_dev *client) +{ + struct drm_fb_helper *fb_helper = drm_fb_helper_from_client(client); + + drm_fb_helper_unprepare(fb_helper); + kfree(fb_helper); +} + static void drm_fbdev_client_unregister(struct drm_client_dev *client) { struct drm_fb_helper *fb_helper = drm_fb_helper_from_client(client); if (fb_helper->info) { + /* + * Fully probed framebuffer device + */ drm_fb_helper_unregister_info(fb_helper); } else { + /* + * Partially initialized client, no framebuffer device yet + */ drm_client_release(&fb_helper->client); - drm_fb_helper_unprepare(fb_helper); - kfree(fb_helper); } } @@ -82,6 +94,7 @@ static int drm_fbdev_client_resume(struct drm_client_dev *client) static const struct drm_client_funcs drm_fbdev_client_funcs = { .owner = THIS_MODULE, + .free = drm_fbdev_client_free, .unregister = drm_fbdev_client_unregister, .restore = drm_fbdev_client_restore, .hotplug = drm_fbdev_client_hotplug, diff --git a/drivers/gpu/drm/drm_client.c b/drivers/gpu/drm/drm_client.c index 3fa38d4ac70b..fe9c6d7083ea 100644 --- a/drivers/gpu/drm/drm_client.c +++ b/drivers/gpu/drm/drm_client.c @@ -168,6 +168,10 @@ void drm_client_release(struct drm_client_dev *client) drm_client_modeset_free(client); drm_client_close(client); + + if (client->funcs && client->funcs->free) + client->funcs->free(client); + drm_dev_put(dev); } EXPORT_SYMBOL(drm_client_release); diff --git a/drivers/gpu/drm/drm_fbdev_dma.c b/drivers/gpu/drm/drm_fbdev_dma.c index 8bd626ef16c7..c6196293e424 100644 --- a/drivers/gpu/drm/drm_fbdev_dma.c +++ b/drivers/gpu/drm/drm_fbdev_dma.c @@ -57,8 +57,6 @@ static void drm_fbdev_dma_fb_destroy(struct fb_info *info) drm_client_buffer_vunmap(fb_helper->buffer); drm_client_framebuffer_delete(fb_helper->buffer); drm_client_release(&fb_helper->client); - drm_fb_helper_unprepare(fb_helper); - kfree(fb_helper); } static const struct fb_ops drm_fbdev_dma_fb_ops = { @@ -92,8 +90,6 @@ static void drm_fbdev_dma_shadowed_fb_destroy(struct fb_info *info) drm_client_buffer_vunmap(fb_helper->buffer); drm_client_framebuffer_delete(fb_helper->buffer); drm_client_release(&fb_helper->client); - drm_fb_helper_unprepare(fb_helper); - kfree(fb_helper); } static const struct fb_ops drm_fbdev_dma_shadowed_fb_ops = { diff --git a/drivers/gpu/drm/drm_fbdev_shmem.c b/drivers/gpu/drm/drm_fbdev_shmem.c index 1e827bf8b815..51573058df6f 100644 --- a/drivers/gpu/drm/drm_fbdev_shmem.c +++ b/drivers/gpu/drm/drm_fbdev_shmem.c @@ -65,8 +65,6 @@ static void drm_fbdev_shmem_fb_destroy(struct fb_info *info) drm_client_buffer_vunmap(fb_helper->buffer); drm_client_framebuffer_delete(fb_helper->buffer); drm_client_release(&fb_helper->client); - drm_fb_helper_unprepare(fb_helper); - kfree(fb_helper); } static const struct fb_ops drm_fbdev_shmem_fb_ops = { diff --git a/drivers/gpu/drm/drm_fbdev_ttm.c b/drivers/gpu/drm/drm_fbdev_ttm.c index 85feb55bba11..ccf460fbc1f0 100644 --- a/drivers/gpu/drm/drm_fbdev_ttm.c +++ b/drivers/gpu/drm/drm_fbdev_ttm.c @@ -53,8 +53,6 @@ static void drm_fbdev_ttm_fb_destroy(struct fb_info *info) drm_client_framebuffer_delete(fb_helper->buffer); drm_client_release(&fb_helper->client); - drm_fb_helper_unprepare(fb_helper); - kfree(fb_helper); } static const struct fb_ops drm_fbdev_ttm_fb_ops = { diff --git a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c index 93de25b77e68..a3bd21a827ad 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c +++ b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c @@ -42,8 +42,6 @@ static void exynos_drm_fb_destroy(struct fb_info *info) drm_framebuffer_remove(fb); drm_client_release(&fb_helper->client); - drm_fb_helper_unprepare(fb_helper); - kfree(fb_helper); } static const struct fb_ops exynos_drm_fb_ops = { diff --git a/drivers/gpu/drm/gma500/fbdev.c b/drivers/gpu/drm/gma500/fbdev.c index a6af21514cff..bc92fa24a1e2 100644 --- a/drivers/gpu/drm/gma500/fbdev.c +++ b/drivers/gpu/drm/gma500/fbdev.c @@ -84,9 +84,6 @@ static void psb_fbdev_fb_destroy(struct fb_info *info) drm_gem_object_put(obj); drm_client_release(&fb_helper->client); - - drm_fb_helper_unprepare(fb_helper); - kfree(fb_helper); } static const struct fb_ops psb_fbdev_fb_ops = { diff --git a/drivers/gpu/drm/i915/display/intel_fbdev.c b/drivers/gpu/drm/i915/display/intel_fbdev.c index 7c4709d58aa3..bf5721856f3c 100644 --- a/drivers/gpu/drm/i915/display/intel_fbdev.c +++ b/drivers/gpu/drm/i915/display/intel_fbdev.c @@ -146,8 +146,6 @@ static void intel_fbdev_fb_destroy(struct fb_info *info) drm_framebuffer_remove(fb_helper->fb); drm_client_release(&fb_helper->client); - drm_fb_helper_unprepare(fb_helper); - kfree(fb_helper); } __diag_push(); diff --git a/drivers/gpu/drm/msm/msm_fbdev.c b/drivers/gpu/drm/msm/msm_fbdev.c index b5969374d53f..aad6fb77f0de 100644 --- a/drivers/gpu/drm/msm/msm_fbdev.c +++ b/drivers/gpu/drm/msm/msm_fbdev.c @@ -52,8 +52,6 @@ static void msm_fbdev_fb_destroy(struct fb_info *info) drm_framebuffer_remove(fb); drm_client_release(&helper->client); - drm_fb_helper_unprepare(helper); - kfree(helper); } static const struct fb_ops msm_fb_ops = { diff --git a/drivers/gpu/drm/omapdrm/omap_fbdev.c b/drivers/gpu/drm/omapdrm/omap_fbdev.c index 948af7ec1130..b5df2923d2a6 100644 --- a/drivers/gpu/drm/omapdrm/omap_fbdev.c +++ b/drivers/gpu/drm/omapdrm/omap_fbdev.c @@ -103,8 +103,6 @@ static void omap_fbdev_fb_destroy(struct fb_info *info) drm_framebuffer_remove(fb); drm_client_release(&helper->client); - drm_fb_helper_unprepare(helper); - kfree(helper); } /* diff --git a/drivers/gpu/drm/radeon/radeon_fbdev.c b/drivers/gpu/drm/radeon/radeon_fbdev.c index dc81b0c2dbff..4df6c9167bf0 100644 --- a/drivers/gpu/drm/radeon/radeon_fbdev.c +++ b/drivers/gpu/drm/radeon/radeon_fbdev.c @@ -184,8 +184,6 @@ static void radeon_fbdev_fb_destroy(struct fb_info *info) radeon_fbdev_destroy_pinned_object(gobj); drm_client_release(&fb_helper->client); - drm_fb_helper_unprepare(fb_helper); - kfree(fb_helper); } static const struct fb_ops radeon_fbdev_fb_ops = { diff --git a/drivers/gpu/drm/tegra/fbdev.c b/drivers/gpu/drm/tegra/fbdev.c index 1b70f5e164af..91aece6f34e0 100644 --- a/drivers/gpu/drm/tegra/fbdev.c +++ b/drivers/gpu/drm/tegra/fbdev.c @@ -53,8 +53,6 @@ static void tegra_fbdev_fb_destroy(struct fb_info *info) drm_framebuffer_remove(fb); drm_client_release(&helper->client); - drm_fb_helper_unprepare(helper); - kfree(helper); } static const struct fb_ops tegra_fb_ops = { diff --git a/include/drm/drm_client.h b/include/drm/drm_client.h index 3556928d3938..715b422952ee 100644 --- a/include/drm/drm_client.h +++ b/include/drm/drm_client.h @@ -28,6 +28,16 @@ struct drm_client_funcs { */ struct module *owner; + /** + * @free: + * + * Called when the client gets unregistered. Implementations should + * release all client-specific data and free the memory. + * + * This callback is optional. + */ + void (*free)(struct drm_client_dev *client); + /** * @unregister: * -- cgit From 33ba21e9e1baac2c1b2d4a01d7529daf1c7ce344 Mon Sep 17 00:00:00 2001 From: Thomas Zimmermann Date: Thu, 9 Oct 2025 15:16:29 +0200 Subject: drm/log: Do not hold lock across drm_client_release() When calling drm_client_release(), the client is already quiescent. Internal locks should therefore be dropped before the caller releases the client. In the case of the DRM log, concurrency originates from the console or from client events. The console has been unregistered in the previous line. The caller of the unregister callback, drm_log_client_unregister(), holds clientlist_mutex from struct drm_device to protect against concurrent client events. It is therefore safe to release the client without holding locks. Signed-off-by: Thomas Zimmermann Reviewed-by: Jocelyn Falempe > Link: https://lore.kernel.org/r/20251009132006.45834-3-tzimmermann@suse.de --- drivers/gpu/drm/clients/drm_log.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/clients/drm_log.c b/drivers/gpu/drm/clients/drm_log.c index fd8556dd58ed..d040be2e9d7a 100644 --- a/drivers/gpu/drm/clients/drm_log.c +++ b/drivers/gpu/drm/clients/drm_log.c @@ -302,8 +302,8 @@ static void drm_log_client_unregister(struct drm_client_dev *client) mutex_lock(&dlog->lock); drm_log_free_scanout(client); - drm_client_release(client); mutex_unlock(&dlog->lock); + drm_client_release(client); kfree(dlog); drm_dbg(dev, "Unregistered with drm log\n"); } -- cgit From 52a023391662f5910077b1a9043b5b5f4d2f9b7b Mon Sep 17 00:00:00 2001 From: Thomas Zimmermann Date: Thu, 9 Oct 2025 15:16:30 +0200 Subject: drm/log: Add free callback Free the client memory in the client free callback. Also move the debugging output into the free callback: drm_client_release() puts the reference on the DRM device, so pointers to the device should be considered dangling afterwards. Signed-off-by: Thomas Zimmermann Reviewed-by: Jocelyn Falempe > Link: https://lore.kernel.org/r/20251009132006.45834-4-tzimmermann@suse.de --- drivers/gpu/drm/clients/drm_log.c | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/clients/drm_log.c b/drivers/gpu/drm/clients/drm_log.c index d040be2e9d7a..24b08fdcb57a 100644 --- a/drivers/gpu/drm/clients/drm_log.c +++ b/drivers/gpu/drm/clients/drm_log.c @@ -293,19 +293,26 @@ static void drm_log_free_scanout(struct drm_client_dev *client) } } -static void drm_log_client_unregister(struct drm_client_dev *client) +static void drm_log_client_free(struct drm_client_dev *client) { struct drm_log *dlog = client_to_drm_log(client); struct drm_device *dev = client->dev; + kfree(dlog); + + drm_dbg(dev, "Unregistered with drm log\n"); +} + +static void drm_log_client_unregister(struct drm_client_dev *client) +{ + struct drm_log *dlog = client_to_drm_log(client); + unregister_console(&dlog->con); mutex_lock(&dlog->lock); drm_log_free_scanout(client); mutex_unlock(&dlog->lock); drm_client_release(client); - kfree(dlog); - drm_dbg(dev, "Unregistered with drm log\n"); } static int drm_log_client_hotplug(struct drm_client_dev *client) @@ -339,6 +346,7 @@ static int drm_log_client_resume(struct drm_client_dev *client) static const struct drm_client_funcs drm_log_client_funcs = { .owner = THIS_MODULE, + .free = drm_log_client_free, .unregister = drm_log_client_unregister, .hotplug = drm_log_client_hotplug, .suspend = drm_log_client_suspend, -- cgit From 57fe8285dc4764171fa9eb1f153cae3bb313d6fc Mon Sep 17 00:00:00 2001 From: Thomas Zimmermann Date: Thu, 9 Oct 2025 15:16:31 +0200 Subject: drm/client: Do not free client memory by default Make no assumption on the allocation of the client's memory. For example, amdgpu stores a client within another data structures, where it cannot be freed by itself. The correct place to free the client's memory is the client's free callback. All existing clients implement this. Signed-off-by: Thomas Zimmermann Reviewed-by: Jocelyn Falempe Link: https://lore.kernel.org/r/20251009132006.45834-5-tzimmermann@suse.de --- drivers/gpu/drm/drm_client_event.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/drm_client_event.c b/drivers/gpu/drm/drm_client_event.c index c3baeb4d4e6b..d25dc5250983 100644 --- a/drivers/gpu/drm/drm_client_event.c +++ b/drivers/gpu/drm/drm_client_event.c @@ -39,12 +39,13 @@ void drm_client_dev_unregister(struct drm_device *dev) mutex_lock(&dev->clientlist_mutex); list_for_each_entry_safe(client, tmp, &dev->clientlist, list) { list_del(&client->list); - if (client->funcs && client->funcs->unregister) { + /* + * Unregistering consumes and frees the client. + */ + if (client->funcs && client->funcs->unregister) client->funcs->unregister(client); - } else { + else drm_client_release(client); - kfree(client); - } } mutex_unlock(&dev->clientlist_mutex); } -- cgit From b9e5e9d2c187b849e050d59823e8c834f78475ab Mon Sep 17 00:00:00 2001 From: Ruben Wauters Date: Mon, 20 Oct 2025 14:56:04 +0100 Subject: drm/gud: rearrange gud_probe() to prepare for function splitting gud_probe() is currently very large and does many things, including pipeline setup and feature detection, as well as having USB functions. This patch re-orders the code in gud_probe() to make it more organised and easier to split apart in the future. Signed-off-by: Ruben Wauters Reviewed-by: Thomas Zimmermann Link: https://lore.kernel.org/r/20251020140147.5017-1-rubenru09@aol.com/ --- drivers/gpu/drm/gud/gud_drv.c | 45 +++++++++++++++++++++++-------------------- 1 file changed, 24 insertions(+), 21 deletions(-) diff --git a/drivers/gpu/drm/gud/gud_drv.c b/drivers/gpu/drm/gud/gud_drv.c index b7345c8d823d..42135a48d92e 100644 --- a/drivers/gpu/drm/gud/gud_drv.c +++ b/drivers/gpu/drm/gud/gud_drv.c @@ -249,7 +249,7 @@ int gud_usb_set_u8(struct gud_device *gdrm, u8 request, u8 val) return gud_usb_set(gdrm, request, 0, &val, sizeof(val)); } -static int gud_get_properties(struct gud_device *gdrm) +static int gud_plane_add_properties(struct gud_device *gdrm) { struct gud_property_req *properties; unsigned int i, num_properties; @@ -463,10 +463,6 @@ static int gud_probe(struct usb_interface *intf, const struct usb_device_id *id) return PTR_ERR(gdrm); drm = &gdrm->drm; - drm->mode_config.funcs = &gud_mode_config_funcs; - ret = drmm_mode_config_init(drm); - if (ret) - return ret; gdrm->flags = le32_to_cpu(desc.flags); gdrm->compression = desc.compression & GUD_COMPRESSION_LZ4; @@ -483,11 +479,28 @@ static int gud_probe(struct usb_interface *intf, const struct usb_device_id *id) if (ret) return ret; + usb_set_intfdata(intf, gdrm); + + dma_dev = usb_intf_get_dma_device(intf); + if (dma_dev) { + drm_dev_set_dma_dev(drm, dma_dev); + put_device(dma_dev); + } else { + dev_warn(dev, "buffer sharing not supported"); /* not an error */ + } + + /* Mode config init */ + ret = drmm_mode_config_init(drm); + if (ret) + return ret; + drm->mode_config.min_width = le32_to_cpu(desc.min_width); drm->mode_config.max_width = le32_to_cpu(desc.max_width); drm->mode_config.min_height = le32_to_cpu(desc.min_height); drm->mode_config.max_height = le32_to_cpu(desc.max_height); + drm->mode_config.funcs = &gud_mode_config_funcs; + /* Format init */ formats_dev = devm_kmalloc(dev, GUD_FORMATS_MAX_NUM, GFP_KERNEL); /* Add room for emulated XRGB8888 */ formats = devm_kmalloc_array(dev, GUD_FORMATS_MAX_NUM + 1, sizeof(*formats), GFP_KERNEL); @@ -587,6 +600,7 @@ static int gud_probe(struct usb_interface *intf, const struct usb_device_id *id) return -ENOMEM; } + /* Pipeline init */ ret = drm_universal_plane_init(drm, &gdrm->plane, 0, &gud_plane_funcs, formats, num_formats, @@ -598,12 +612,9 @@ static int gud_probe(struct usb_interface *intf, const struct usb_device_id *id) drm_plane_helper_add(&gdrm->plane, &gud_plane_helper_funcs); drm_plane_enable_fb_damage_clips(&gdrm->plane); - devm_kfree(dev, formats); - devm_kfree(dev, formats_dev); - - ret = gud_get_properties(gdrm); + ret = gud_plane_add_properties(gdrm); if (ret) { - dev_err(dev, "Failed to get properties (error=%d)\n", ret); + dev_err(dev, "Failed to add properties (error=%d)\n", ret); return ret; } @@ -621,16 +632,7 @@ static int gud_probe(struct usb_interface *intf, const struct usb_device_id *id) } drm_mode_config_reset(drm); - - usb_set_intfdata(intf, gdrm); - - dma_dev = usb_intf_get_dma_device(intf); - if (dma_dev) { - drm_dev_set_dma_dev(drm, dma_dev); - put_device(dma_dev); - } else { - dev_warn(dev, "buffer sharing not supported"); /* not an error */ - } + drm_kms_helper_poll_init(drm); drm_debugfs_add_file(drm, "stats", gud_stats_debugfs, NULL); @@ -638,7 +640,8 @@ static int gud_probe(struct usb_interface *intf, const struct usb_device_id *id) if (ret) return ret; - drm_kms_helper_poll_init(drm); + devm_kfree(dev, formats); + devm_kfree(dev, formats_dev); drm_client_setup(drm, NULL); -- cgit From 41ee90230c571161a948f175134ca0e083de3ca2 Mon Sep 17 00:00:00 2001 From: Lizhi Hou Date: Fri, 24 Oct 2025 09:26:08 -0700 Subject: accel/amdxdna: Fix incorrect return value in aie2_hwctx_sync_debug_bo() When the driver issues the SYNC_DEBUG_BO command, it currently returns 0 even if the firmware fails to execute the command. Update the driver to return -EINVAL in this case to properly indicate the failure. Reported-by: Dan Carpenter Closes: https://lore.kernel.org/dri-devel/aPsadTBXunUSBByV@stanley.mountain/ Fixes: 7ea046838021 ("accel/amdxdna: Support firmware debug buffer") Reviewed-by: Mario Limonciello (AMD) Signed-off-by: Lizhi Hou Link: https://patch.msgid.link/20251024162608.1544842-1-lizhi.hou@amd.com --- drivers/accel/amdxdna/aie2_ctx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/accel/amdxdna/aie2_ctx.c b/drivers/accel/amdxdna/aie2_ctx.c index 63450b7773ac..c6c473c78352 100644 --- a/drivers/accel/amdxdna/aie2_ctx.c +++ b/drivers/accel/amdxdna/aie2_ctx.c @@ -879,7 +879,7 @@ int aie2_hwctx_sync_debug_bo(struct amdxdna_hwctx *hwctx, u32 debug_bo_hdl) aie2_cmd_wait(hwctx, seq); if (cmd.result) { XDNA_ERR(xdna, "Response failure 0x%x", cmd.result); - return ret; + return -EINVAL; } return 0; -- cgit From 81233d5419cf20e4f5ef505882951616888a2ef9 Mon Sep 17 00:00:00 2001 From: Lizhi Hou Date: Fri, 24 Oct 2025 09:55:03 -0700 Subject: accel/amdxdna: Fix uninitialized return value In aie2_get_hwctx_status() and aie2_query_ctx_status_array(), the functions could return an uninitialized value in some cases. Update them to always return 0. The amount of valid results is indicated by the returned buffer_size, element_size, and num_element fields. Fixes: 2f509fe6a42c ("accel/amdxdna: Add ioctl DRM_IOCTL_AMDXDNA_GET_ARRAY") Reviewed-by: Mario Limonciello (AMD) Signed-off-by: Lizhi Hou Link: https://patch.msgid.link/20251024165503.1548131-1-lizhi.hou@amd.com --- drivers/accel/amdxdna/aie2_pci.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/accel/amdxdna/aie2_pci.c b/drivers/accel/amdxdna/aie2_pci.c index f48045318dc0..f1a8112b080f 100644 --- a/drivers/accel/amdxdna/aie2_pci.c +++ b/drivers/accel/amdxdna/aie2_pci.c @@ -822,7 +822,7 @@ static int aie2_get_hwctx_status(struct amdxdna_client *client, } args->buffer_size -= (u32)(array_args.buffer - args->buffer); - return ret; + return 0; } static int aie2_get_info(struct amdxdna_client *client, struct amdxdna_drm_get_info *args) @@ -904,7 +904,7 @@ static int aie2_query_ctx_status_array(struct amdxdna_client *client, args->num_element = (u32)((array_args.buffer - args->buffer) / args->element_size); - return ret; + return 0; } static int aie2_get_array(struct amdxdna_client *client, -- cgit From b3e29b6e70a35ab8571043a6ea8aa870e5cf2a98 Mon Sep 17 00:00:00 2001 From: "Rob Herring (Arm)" Date: Mon, 20 Oct 2025 14:33:27 -0500 Subject: dt-bindings: npu: Add Arm Ethos-U65/U85 Add a binding schema for Arm Ethos-U65/U85 NPU. The Arm Ethos-U NPUs are designed for edge AI inference applications. Reviewed-by: Krzysztof Kozlowski Reviewed-by: Frank Li Acked-by: Tomeu Vizoso Link: https://patch.msgid.link/20251020-ethos-v6-1-ecebc383c4b7@kernel.org Signed-off-by: Rob Herring (Arm) --- .../devicetree/bindings/npu/arm,ethos.yaml | 79 ++++++++++++++++++++++ 1 file changed, 79 insertions(+) create mode 100644 Documentation/devicetree/bindings/npu/arm,ethos.yaml diff --git a/Documentation/devicetree/bindings/npu/arm,ethos.yaml b/Documentation/devicetree/bindings/npu/arm,ethos.yaml new file mode 100644 index 000000000000..716c4997f976 --- /dev/null +++ b/Documentation/devicetree/bindings/npu/arm,ethos.yaml @@ -0,0 +1,79 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/npu/arm,ethos.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Arm Ethos U65/U85 + +maintainers: + - Rob Herring + +description: > + The Arm Ethos-U NPUs are designed for IoT inference applications. The NPUs + can accelerate 8-bit and 16-bit integer quantized networks: + + Transformer networks (U85 only) + Convolutional Neural Networks (CNN) + Recurrent Neural Networks (RNN) + + Further documentation is available here: + + U65 TRM: https://developer.arm.com/documentation/102023/ + U85 TRM: https://developer.arm.com/documentation/102685/ + +properties: + compatible: + oneOf: + - items: + - enum: + - fsl,imx93-npu + - const: arm,ethos-u65 + - items: + - {} + - const: arm,ethos-u85 + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + clocks: + maxItems: 2 + + clock-names: + items: + - const: core + - const: apb + + power-domains: + maxItems: 1 + + sram: + maxItems: 1 + +required: + - compatible + - reg + - interrupts + - clocks + +additionalProperties: false + +examples: + - | + #include + #include + #include + + npu@4a900000 { + compatible = "fsl,imx93-npu", "arm,ethos-u65"; + reg = <0x4a900000 0x1000>; + interrupts = ; + power-domains = <&mlmix>; + clocks = <&clk IMX93_CLK_ML>, <&clk IMX93_CLK_ML_APB>; + clock-names = "core", "apb"; + sram = <&sram>; + }; +... -- cgit From 5a5e9c0228e613f0ef2a58b9782d7c0ea8f1e58b Mon Sep 17 00:00:00 2001 From: "Rob Herring (Arm)" Date: Mon, 20 Oct 2025 14:33:28 -0500 Subject: accel: Add Arm Ethos-U NPU driver Add a driver for Arm Ethos-U65/U85 NPUs. The Ethos-U NPU has a relatively simple interface with single command stream to describe buffers, operation settings, and network operations. It supports up to 8 memory regions (though no h/w bounds on a region). The Ethos NPUs are designed to use an SRAM for scratch memory. Region 2 is reserved for SRAM (like the downstream driver stack and compiler). Userspace doesn't need access to the SRAM. The h/w has no MMU nor external IOMMU and is a DMA engine which can read and write anywhere in memory without h/w bounds checks. The user submitted command streams must be validated against the bounds of the GEM BOs. This is similar to the VC4 design which validates shaders. The job submit is based on the rocket driver for the Rockchip NPU utilizing the GPU scheduler. It is simpler as there's only 1 core rather than 3. Tested on i.MX93 platform (U65) and FVP (U85) with Mesa Teflon support. Acked-by: Thomas Zimmermann Acked-by: Tomeu Vizoso Reviewed-by: Frank Li Link: https://patch.msgid.link/20251020-ethos-v6-2-ecebc383c4b7@kernel.org Signed-off-by: Rob Herring (Arm) --- MAINTAINERS | 9 + drivers/accel/Kconfig | 1 + drivers/accel/Makefile | 1 + drivers/accel/ethosu/Kconfig | 11 + drivers/accel/ethosu/Makefile | 4 + drivers/accel/ethosu/ethosu_device.h | 197 ++++++++++ drivers/accel/ethosu/ethosu_drv.c | 403 ++++++++++++++++++++ drivers/accel/ethosu/ethosu_drv.h | 15 + drivers/accel/ethosu/ethosu_gem.c | 704 +++++++++++++++++++++++++++++++++++ drivers/accel/ethosu/ethosu_gem.h | 46 +++ drivers/accel/ethosu/ethosu_job.c | 496 ++++++++++++++++++++++++ drivers/accel/ethosu/ethosu_job.h | 40 ++ include/uapi/drm/ethosu_accel.h | 261 +++++++++++++ 13 files changed, 2188 insertions(+) create mode 100644 drivers/accel/ethosu/Kconfig create mode 100644 drivers/accel/ethosu/Makefile create mode 100644 drivers/accel/ethosu/ethosu_device.h create mode 100644 drivers/accel/ethosu/ethosu_drv.c create mode 100644 drivers/accel/ethosu/ethosu_drv.h create mode 100644 drivers/accel/ethosu/ethosu_gem.c create mode 100644 drivers/accel/ethosu/ethosu_gem.h create mode 100644 drivers/accel/ethosu/ethosu_job.c create mode 100644 drivers/accel/ethosu/ethosu_job.h create mode 100644 include/uapi/drm/ethosu_accel.h diff --git a/MAINTAINERS b/MAINTAINERS index 5f53e385a261..874fcbe59990 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -2017,6 +2017,15 @@ F: arch/arm64/include/asm/arch_timer.h F: drivers/clocksource/arm_arch_timer.c F: drivers/clocksource/arm_arch_timer_mmio.c +ARM ETHOS-U NPU DRIVER +M: Rob Herring (Arm) +M: Tomeu Vizoso +L: dri-devel@lists.freedesktop.org +S: Supported +T: git https://gitlab.freedesktop.org/drm/misc/kernel.git +F: drivers/accel/ethosu/ +F: include/uapi/drm/ethosu_accel.h + ARM GENERIC INTERRUPT CONTROLLER DRIVERS M: Marc Zyngier L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers) diff --git a/drivers/accel/Kconfig b/drivers/accel/Kconfig index bb01cebc42bf..bdf48ccafcf2 100644 --- a/drivers/accel/Kconfig +++ b/drivers/accel/Kconfig @@ -25,6 +25,7 @@ menuconfig DRM_ACCEL and debugfs). source "drivers/accel/amdxdna/Kconfig" +source "drivers/accel/ethosu/Kconfig" source "drivers/accel/habanalabs/Kconfig" source "drivers/accel/ivpu/Kconfig" source "drivers/accel/qaic/Kconfig" diff --git a/drivers/accel/Makefile b/drivers/accel/Makefile index ffc3fa588666..1d3a7251b950 100644 --- a/drivers/accel/Makefile +++ b/drivers/accel/Makefile @@ -1,6 +1,7 @@ # SPDX-License-Identifier: GPL-2.0-only obj-$(CONFIG_DRM_ACCEL_AMDXDNA) += amdxdna/ +obj-$(CONFIG_DRM_ACCEL_ARM_ETHOSU) += ethosu/ obj-$(CONFIG_DRM_ACCEL_HABANALABS) += habanalabs/ obj-$(CONFIG_DRM_ACCEL_IVPU) += ivpu/ obj-$(CONFIG_DRM_ACCEL_QAIC) += qaic/ diff --git a/drivers/accel/ethosu/Kconfig b/drivers/accel/ethosu/Kconfig new file mode 100644 index 000000000000..d25f9b3eb317 --- /dev/null +++ b/drivers/accel/ethosu/Kconfig @@ -0,0 +1,11 @@ +# SPDX-License-Identifier: GPL-2.0-only + +config DRM_ACCEL_ARM_ETHOSU + tristate "Arm Ethos-U65/U85 NPU" + depends on HAS_IOMEM + depends on DRM_ACCEL + select DRM_GEM_DMA_HELPER + select DRM_SCHED + select GENERIC_ALLOCATOR + help + Enables driver for Arm Ethos-U65/U85 NPUs diff --git a/drivers/accel/ethosu/Makefile b/drivers/accel/ethosu/Makefile new file mode 100644 index 000000000000..17db5a600416 --- /dev/null +++ b/drivers/accel/ethosu/Makefile @@ -0,0 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0-only + +obj-$(CONFIG_DRM_ACCEL_ARM_ETHOSU) := ethosu.o +ethosu-y += ethosu_drv.o ethosu_gem.o ethosu_job.o diff --git a/drivers/accel/ethosu/ethosu_device.h b/drivers/accel/ethosu/ethosu_device.h new file mode 100644 index 000000000000..b189fa783d6a --- /dev/null +++ b/drivers/accel/ethosu/ethosu_device.h @@ -0,0 +1,197 @@ +/* SPDX-License-Identifier: GPL-2.0-only or MIT */ +/* Copyright 2025 Arm, Ltd. */ + +#ifndef __ETHOSU_DEVICE_H__ +#define __ETHOSU_DEVICE_H__ + +#include +#include +#include + +#include +#include + +#include + +struct clk; +struct gen_pool; + +#define NPU_REG_ID 0x0000 +#define NPU_REG_STATUS 0x0004 +#define NPU_REG_CMD 0x0008 +#define NPU_REG_RESET 0x000c +#define NPU_REG_QBASE 0x0010 +#define NPU_REG_QBASE_HI 0x0014 +#define NPU_REG_QREAD 0x0018 +#define NPU_REG_QCONFIG 0x001c +#define NPU_REG_QSIZE 0x0020 +#define NPU_REG_PROT 0x0024 +#define NPU_REG_CONFIG 0x0028 +#define NPU_REG_REGIONCFG 0x003c +#define NPU_REG_AXILIMIT0 0x0040 // U65 +#define NPU_REG_AXILIMIT1 0x0044 // U65 +#define NPU_REG_AXILIMIT2 0x0048 // U65 +#define NPU_REG_AXILIMIT3 0x004c // U65 +#define NPU_REG_MEM_ATTR0 0x0040 // U85 +#define NPU_REG_MEM_ATTR1 0x0044 // U85 +#define NPU_REG_MEM_ATTR2 0x0048 // U85 +#define NPU_REG_MEM_ATTR3 0x004c // U85 +#define NPU_REG_AXI_SRAM 0x0050 // U85 +#define NPU_REG_AXI_EXT 0x0054 // U85 + +#define NPU_REG_BASEP(x) (0x0080 + (x) * 8) +#define NPU_REG_BASEP_HI(x) (0x0084 + (x) * 8) +#define NPU_BASEP_REGION_MAX 8 + +#define ID_ARCH_MAJOR_MASK GENMASK(31, 28) +#define ID_ARCH_MINOR_MASK GENMASK(27, 20) +#define ID_ARCH_PATCH_MASK GENMASK(19, 16) +#define ID_VER_MAJOR_MASK GENMASK(11, 8) +#define ID_VER_MINOR_MASK GENMASK(7, 4) + +#define CONFIG_MACS_PER_CC_MASK GENMASK(3, 0) +#define CONFIG_CMD_STREAM_VER_MASK GENMASK(7, 4) + +#define STATUS_STATE_RUNNING BIT(0) +#define STATUS_IRQ_RAISED BIT(1) +#define STATUS_BUS_STATUS BIT(2) +#define STATUS_RESET_STATUS BIT(3) +#define STATUS_CMD_PARSE_ERR BIT(4) +#define STATUS_CMD_END_REACHED BIT(5) + +#define CMD_CLEAR_IRQ BIT(1) +#define CMD_TRANSITION_TO_RUN BIT(0) + +#define RESET_PENDING_CSL BIT(1) +#define RESET_PENDING_CPL BIT(0) + +#define PROT_ACTIVE_CSL BIT(1) + +enum ethosu_cmds { + NPU_OP_CONV = 0x2, + NPU_OP_DEPTHWISE = 0x3, + NPU_OP_POOL = 0x5, + NPU_OP_ELEMENTWISE = 0x6, + NPU_OP_RESIZE = 0x7, // U85 only + NPU_OP_DMA_START = 0x10, + NPU_SET_IFM_PAD_TOP = 0x100, + NPU_SET_IFM_PAD_LEFT = 0x101, + NPU_SET_IFM_PAD_RIGHT = 0x102, + NPU_SET_IFM_PAD_BOTTOM = 0x103, + NPU_SET_IFM_DEPTH_M1 = 0x104, + NPU_SET_IFM_PRECISION = 0x105, + NPU_SET_IFM_BROADCAST = 0x108, + NPU_SET_IFM_WIDTH0_M1 = 0x10a, + NPU_SET_IFM_HEIGHT0_M1 = 0x10b, + NPU_SET_IFM_HEIGHT1_M1 = 0x10c, + NPU_SET_IFM_REGION = 0x10f, + NPU_SET_OFM_WIDTH_M1 = 0x111, + NPU_SET_OFM_HEIGHT_M1 = 0x112, + NPU_SET_OFM_DEPTH_M1 = 0x113, + NPU_SET_OFM_PRECISION = 0x114, + NPU_SET_OFM_WIDTH0_M1 = 0x11a, + NPU_SET_OFM_HEIGHT0_M1 = 0x11b, + NPU_SET_OFM_HEIGHT1_M1 = 0x11c, + NPU_SET_OFM_REGION = 0x11f, + NPU_SET_KERNEL_WIDTH_M1 = 0x120, + NPU_SET_KERNEL_HEIGHT_M1 = 0x121, + NPU_SET_KERNEL_STRIDE = 0x122, + NPU_SET_WEIGHT_REGION = 0x128, + NPU_SET_SCALE_REGION = 0x129, + NPU_SET_DMA0_SRC_REGION = 0x130, + NPU_SET_DMA0_DST_REGION = 0x131, + NPU_SET_DMA0_SIZE0 = 0x132, + NPU_SET_DMA0_SIZE1 = 0x133, + NPU_SET_IFM2_BROADCAST = 0x180, + NPU_SET_IFM2_PRECISION = 0x185, + NPU_SET_IFM2_WIDTH0_M1 = 0x18a, + NPU_SET_IFM2_HEIGHT0_M1 = 0x18b, + NPU_SET_IFM2_HEIGHT1_M1 = 0x18c, + NPU_SET_IFM2_REGION = 0x18f, + NPU_SET_IFM_BASE0 = 0x4000, + NPU_SET_IFM_BASE1 = 0x4001, + NPU_SET_IFM_BASE2 = 0x4002, + NPU_SET_IFM_BASE3 = 0x4003, + NPU_SET_IFM_STRIDE_X = 0x4004, + NPU_SET_IFM_STRIDE_Y = 0x4005, + NPU_SET_IFM_STRIDE_C = 0x4006, + NPU_SET_OFM_BASE0 = 0x4010, + NPU_SET_OFM_BASE1 = 0x4011, + NPU_SET_OFM_BASE2 = 0x4012, + NPU_SET_OFM_BASE3 = 0x4013, + NPU_SET_OFM_STRIDE_X = 0x4014, + NPU_SET_OFM_STRIDE_Y = 0x4015, + NPU_SET_OFM_STRIDE_C = 0x4016, + NPU_SET_WEIGHT_BASE = 0x4020, + NPU_SET_WEIGHT_LENGTH = 0x4021, + NPU_SET_SCALE_BASE = 0x4022, + NPU_SET_SCALE_LENGTH = 0x4023, + NPU_SET_DMA0_SRC = 0x4030, + NPU_SET_DMA0_DST = 0x4031, + NPU_SET_DMA0_LEN = 0x4032, + NPU_SET_DMA0_SRC_STRIDE0 = 0x4033, + NPU_SET_DMA0_SRC_STRIDE1 = 0x4034, + NPU_SET_DMA0_DST_STRIDE0 = 0x4035, + NPU_SET_DMA0_DST_STRIDE1 = 0x4036, + NPU_SET_IFM2_BASE0 = 0x4080, + NPU_SET_IFM2_BASE1 = 0x4081, + NPU_SET_IFM2_BASE2 = 0x4082, + NPU_SET_IFM2_BASE3 = 0x4083, + NPU_SET_IFM2_STRIDE_X = 0x4084, + NPU_SET_IFM2_STRIDE_Y = 0x4085, + NPU_SET_IFM2_STRIDE_C = 0x4086, + NPU_SET_WEIGHT1_BASE = 0x4090, + NPU_SET_WEIGHT1_LENGTH = 0x4091, + NPU_SET_SCALE1_BASE = 0x4092, + NPU_SET_WEIGHT2_BASE = 0x4092, + NPU_SET_SCALE1_LENGTH = 0x4093, + NPU_SET_WEIGHT2_LENGTH = 0x4093, + NPU_SET_WEIGHT3_BASE = 0x4094, + NPU_SET_WEIGHT3_LENGTH = 0x4095, +}; + +#define ETHOSU_SRAM_REGION 2 /* Matching Vela compiler */ + +/** + * struct ethosu_device - Ethosu device + */ +struct ethosu_device { + /** @base: Base drm_device. */ + struct drm_device base; + + /** @iomem: CPU mapping of the registers. */ + void __iomem *regs; + + void __iomem *sram; + struct gen_pool *srampool; + dma_addr_t sramphys; + + struct clk_bulk_data *clks; + int num_clks; + int irq; + + struct drm_ethosu_npu_info npu_info; + + struct ethosu_job *in_flight_job; + /* For in_flight_job and ethosu_job_hw_submit() */ + struct mutex job_lock; + + /* For dma_fence */ + spinlock_t fence_lock; + + struct drm_gpu_scheduler sched; + /* For ethosu_job_do_push() */ + struct mutex sched_lock; + u64 fence_context; + u64 emit_seqno; +}; + +#define to_ethosu_device(drm_dev) \ + ((struct ethosu_device *)container_of(drm_dev, struct ethosu_device, base)) + +static inline bool ethosu_is_u65(const struct ethosu_device *ethosudev) +{ + return FIELD_GET(ID_ARCH_MAJOR_MASK, ethosudev->npu_info.id) == 1; +} + +#endif diff --git a/drivers/accel/ethosu/ethosu_drv.c b/drivers/accel/ethosu/ethosu_drv.c new file mode 100644 index 000000000000..e05a69bf5574 --- /dev/null +++ b/drivers/accel/ethosu/ethosu_drv.c @@ -0,0 +1,403 @@ +// SPDX-License-Identifier: GPL-2.0-only or MIT +// Copyright (C) 2025 Arm, Ltd. + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include + +#include "ethosu_drv.h" +#include "ethosu_device.h" +#include "ethosu_gem.h" +#include "ethosu_job.h" + +static int ethosu_ioctl_dev_query(struct drm_device *ddev, void *data, + struct drm_file *file) +{ + struct ethosu_device *ethosudev = to_ethosu_device(ddev); + struct drm_ethosu_dev_query *args = data; + + if (!args->pointer) { + switch (args->type) { + case DRM_ETHOSU_DEV_QUERY_NPU_INFO: + args->size = sizeof(ethosudev->npu_info); + return 0; + default: + return -EINVAL; + } + } + + switch (args->type) { + case DRM_ETHOSU_DEV_QUERY_NPU_INFO: + if (args->size < offsetofend(struct drm_ethosu_npu_info, sram_size)) + return -EINVAL; + return copy_struct_to_user(u64_to_user_ptr(args->pointer), + args->size, + ðosudev->npu_info, + sizeof(ethosudev->npu_info), NULL); + default: + return -EINVAL; + } +} + +#define ETHOSU_BO_FLAGS DRM_ETHOSU_BO_NO_MMAP + +static int ethosu_ioctl_bo_create(struct drm_device *ddev, void *data, + struct drm_file *file) +{ + struct drm_ethosu_bo_create *args = data; + int cookie, ret; + + if (!drm_dev_enter(ddev, &cookie)) + return -ENODEV; + + if (!args->size || (args->flags & ~ETHOSU_BO_FLAGS)) { + ret = -EINVAL; + goto out_dev_exit; + } + + ret = ethosu_gem_create_with_handle(file, ddev, &args->size, + args->flags, &args->handle); + +out_dev_exit: + drm_dev_exit(cookie); + return ret; +} + +static int ethosu_ioctl_bo_wait(struct drm_device *ddev, void *data, + struct drm_file *file) +{ + struct drm_ethosu_bo_wait *args = data; + int cookie, ret; + unsigned long timeout = drm_timeout_abs_to_jiffies(args->timeout_ns); + + if (args->pad) + return -EINVAL; + + if (!drm_dev_enter(ddev, &cookie)) + return -ENODEV; + + ret = drm_gem_dma_resv_wait(file, args->handle, true, timeout); + + drm_dev_exit(cookie); + return ret; +} + +static int ethosu_ioctl_bo_mmap_offset(struct drm_device *ddev, void *data, + struct drm_file *file) +{ + struct drm_ethosu_bo_mmap_offset *args = data; + struct drm_gem_object *obj; + + if (args->pad) + return -EINVAL; + + obj = drm_gem_object_lookup(file, args->handle); + if (!obj) + return -ENOENT; + + args->offset = drm_vma_node_offset_addr(&obj->vma_node); + drm_gem_object_put(obj); + return 0; +} + +static int ethosu_ioctl_cmdstream_bo_create(struct drm_device *ddev, void *data, + struct drm_file *file) +{ + struct drm_ethosu_cmdstream_bo_create *args = data; + int cookie, ret; + + if (!drm_dev_enter(ddev, &cookie)) + return -ENODEV; + + if (!args->size || !args->data || args->pad || args->flags) { + ret = -EINVAL; + goto out_dev_exit; + } + + args->flags |= DRM_ETHOSU_BO_NO_MMAP; + + ret = ethosu_gem_cmdstream_create(file, ddev, args->size, args->data, + args->flags, &args->handle); + +out_dev_exit: + drm_dev_exit(cookie); + return ret; +} + +static int ethosu_open(struct drm_device *ddev, struct drm_file *file) +{ + int ret = 0; + + if (!try_module_get(THIS_MODULE)) + return -EINVAL; + + struct ethosu_file_priv __free(kfree) *priv = kzalloc(sizeof(*priv), GFP_KERNEL); + if (!priv) { + ret = -ENOMEM; + goto err_put_mod; + } + priv->edev = to_ethosu_device(ddev); + + ret = ethosu_job_open(priv); + if (ret) + goto err_put_mod; + + file->driver_priv = no_free_ptr(priv); + return 0; + +err_put_mod: + module_put(THIS_MODULE); + return ret; +} + +static void ethosu_postclose(struct drm_device *ddev, struct drm_file *file) +{ + ethosu_job_close(file->driver_priv); + kfree(file->driver_priv); + module_put(THIS_MODULE); +} + +static const struct drm_ioctl_desc ethosu_drm_driver_ioctls[] = { +#define ETHOSU_IOCTL(n, func, flags) \ + DRM_IOCTL_DEF_DRV(ETHOSU_##n, ethosu_ioctl_##func, flags) + + ETHOSU_IOCTL(DEV_QUERY, dev_query, 0), + ETHOSU_IOCTL(BO_CREATE, bo_create, 0), + ETHOSU_IOCTL(BO_WAIT, bo_wait, 0), + ETHOSU_IOCTL(BO_MMAP_OFFSET, bo_mmap_offset, 0), + ETHOSU_IOCTL(CMDSTREAM_BO_CREATE, cmdstream_bo_create, 0), + ETHOSU_IOCTL(SUBMIT, submit, 0), +}; + +DEFINE_DRM_ACCEL_FOPS(ethosu_drm_driver_fops); + +/* + * Ethosu driver version: + * - 1.0 - initial interface + */ +static const struct drm_driver ethosu_drm_driver = { + .driver_features = DRIVER_COMPUTE_ACCEL | DRIVER_GEM, + .open = ethosu_open, + .postclose = ethosu_postclose, + .ioctls = ethosu_drm_driver_ioctls, + .num_ioctls = ARRAY_SIZE(ethosu_drm_driver_ioctls), + .fops = ðosu_drm_driver_fops, + .name = "ethosu", + .desc = "Arm Ethos-U Accel driver", + .major = 1, + .minor = 0, + + .gem_create_object = ethosu_gem_create_object, +}; + +#define U65_DRAM_AXI_LIMIT_CFG 0x1f3f0002 +#define U65_SRAM_AXI_LIMIT_CFG 0x1f3f00b0 +#define U85_AXI_EXT_CFG 0x00021f3f +#define U85_AXI_SRAM_CFG 0x00021f3f +#define U85_MEM_ATTR0_CFG 0x00000000 +#define U85_MEM_ATTR2_CFG 0x000000b7 + +static int ethosu_reset(struct ethosu_device *ethosudev) +{ + int ret; + u32 reg; + + writel_relaxed(RESET_PENDING_CSL, ethosudev->regs + NPU_REG_RESET); + ret = readl_poll_timeout(ethosudev->regs + NPU_REG_STATUS, reg, + !FIELD_GET(STATUS_RESET_STATUS, reg), + USEC_PER_MSEC, USEC_PER_SEC); + if (ret) + return ret; + + if (!FIELD_GET(PROT_ACTIVE_CSL, readl_relaxed(ethosudev->regs + NPU_REG_PROT))) { + dev_warn(ethosudev->base.dev, "Could not reset to non-secure mode (PROT = %x)\n", + readl_relaxed(ethosudev->regs + NPU_REG_PROT)); + } + + /* + * Assign region 2 (SRAM) to AXI M0 (AXILIMIT0), + * everything else to AXI M1 (AXILIMIT2) + */ + writel_relaxed(0x0000aa8a, ethosudev->regs + NPU_REG_REGIONCFG); + if (ethosu_is_u65(ethosudev)) { + writel_relaxed(U65_SRAM_AXI_LIMIT_CFG, ethosudev->regs + NPU_REG_AXILIMIT0); + writel_relaxed(U65_DRAM_AXI_LIMIT_CFG, ethosudev->regs + NPU_REG_AXILIMIT2); + } else { + writel_relaxed(U85_AXI_SRAM_CFG, ethosudev->regs + NPU_REG_AXI_SRAM); + writel_relaxed(U85_AXI_EXT_CFG, ethosudev->regs + NPU_REG_AXI_EXT); + writel_relaxed(U85_MEM_ATTR0_CFG, ethosudev->regs + NPU_REG_MEM_ATTR0); // SRAM + writel_relaxed(U85_MEM_ATTR2_CFG, ethosudev->regs + NPU_REG_MEM_ATTR2); // DRAM + } + + if (ethosudev->sram) + memset_io(ethosudev->sram, 0, ethosudev->npu_info.sram_size); + + return 0; +} + +static int ethosu_device_resume(struct device *dev) +{ + struct ethosu_device *ethosudev = dev_get_drvdata(dev); + int ret; + + ret = clk_bulk_prepare_enable(ethosudev->num_clks, ethosudev->clks); + if (ret) + return ret; + + ret = ethosu_reset(ethosudev); + if (!ret) + return 0; + + clk_bulk_disable_unprepare(ethosudev->num_clks, ethosudev->clks); + return ret; +} + +static int ethosu_device_suspend(struct device *dev) +{ + struct ethosu_device *ethosudev = dev_get_drvdata(dev); + + clk_bulk_disable_unprepare(ethosudev->num_clks, ethosudev->clks); + return 0; +} + +static int ethosu_sram_init(struct ethosu_device *ethosudev) +{ + ethosudev->npu_info.sram_size = 0; + + ethosudev->srampool = of_gen_pool_get(ethosudev->base.dev->of_node, "sram", 0); + if (!ethosudev->srampool) + return 0; + + ethosudev->npu_info.sram_size = gen_pool_size(ethosudev->srampool); + + ethosudev->sram = (void __iomem *)gen_pool_dma_alloc(ethosudev->srampool, + ethosudev->npu_info.sram_size, + ðosudev->sramphys); + if (!ethosudev->sram) { + dev_err(ethosudev->base.dev, "failed to allocate from SRAM pool\n"); + return -ENOMEM; + } + + return 0; +} + +static int ethosu_init(struct ethosu_device *ethosudev) +{ + int ret; + u32 id, config; + + ret = ethosu_device_resume(ethosudev->base.dev); + if (ret) + return ret; + + pm_runtime_set_autosuspend_delay(ethosudev->base.dev, 50); + pm_runtime_use_autosuspend(ethosudev->base.dev); + ret = devm_pm_runtime_set_active_enabled(ethosudev->base.dev); + if (ret) + return ret; + pm_runtime_get_noresume(ethosudev->base.dev); + + ethosudev->npu_info.id = id = readl_relaxed(ethosudev->regs + NPU_REG_ID); + ethosudev->npu_info.config = config = readl_relaxed(ethosudev->regs + NPU_REG_CONFIG); + + ethosu_sram_init(ethosudev); + + dev_info(ethosudev->base.dev, + "Ethos-U NPU, arch v%ld.%ld.%ld, rev r%ldp%ld, cmd stream ver%ld, %d MACs, %dKB SRAM\n", + FIELD_GET(ID_ARCH_MAJOR_MASK, id), + FIELD_GET(ID_ARCH_MINOR_MASK, id), + FIELD_GET(ID_ARCH_PATCH_MASK, id), + FIELD_GET(ID_VER_MAJOR_MASK, id), + FIELD_GET(ID_VER_MINOR_MASK, id), + FIELD_GET(CONFIG_CMD_STREAM_VER_MASK, config), + 1 << FIELD_GET(CONFIG_MACS_PER_CC_MASK, config), + ethosudev->npu_info.sram_size / 1024); + + return 0; +} + +static int ethosu_probe(struct platform_device *pdev) +{ + int ret; + struct ethosu_device *ethosudev; + + ethosudev = devm_drm_dev_alloc(&pdev->dev, ðosu_drm_driver, + struct ethosu_device, base); + if (IS_ERR(ethosudev)) + return -ENOMEM; + platform_set_drvdata(pdev, ethosudev); + + dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(40)); + + ethosudev->regs = devm_platform_ioremap_resource(pdev, 0); + + ethosudev->num_clks = devm_clk_bulk_get_all(&pdev->dev, ðosudev->clks); + if (ethosudev->num_clks < 0) + return ethosudev->num_clks; + + ret = ethosu_job_init(ethosudev); + if (ret) + return ret; + + ret = ethosu_init(ethosudev); + if (ret) + return ret; + + ret = drm_dev_register(ðosudev->base, 0); + if (ret) + pm_runtime_dont_use_autosuspend(ethosudev->base.dev); + + pm_runtime_put_autosuspend(ethosudev->base.dev); + return ret; +} + +static void ethosu_remove(struct platform_device *pdev) +{ + struct ethosu_device *ethosudev = dev_get_drvdata(&pdev->dev); + + drm_dev_unregister(ðosudev->base); + ethosu_job_fini(ethosudev); + if (ethosudev->sram) + gen_pool_free(ethosudev->srampool, (unsigned long)ethosudev->sram, + ethosudev->npu_info.sram_size); +} + +static const struct of_device_id dt_match[] = { + { .compatible = "arm,ethos-u65" }, + { .compatible = "arm,ethos-u85" }, + {} +}; +MODULE_DEVICE_TABLE(of, dt_match); + +static DEFINE_RUNTIME_DEV_PM_OPS(ethosu_pm_ops, + ethosu_device_suspend, + ethosu_device_resume, + NULL); + +static struct platform_driver ethosu_driver = { + .probe = ethosu_probe, + .remove = ethosu_remove, + .driver = { + .name = "ethosu", + .pm = pm_ptr(ðosu_pm_ops), + .of_match_table = dt_match, + }, +}; +module_platform_driver(ethosu_driver); + +MODULE_AUTHOR("Rob Herring "); +MODULE_DESCRIPTION("Arm Ethos-U Accel Driver"); +MODULE_LICENSE("Dual MIT/GPL"); diff --git a/drivers/accel/ethosu/ethosu_drv.h b/drivers/accel/ethosu/ethosu_drv.h new file mode 100644 index 000000000000..9e21dfe94184 --- /dev/null +++ b/drivers/accel/ethosu/ethosu_drv.h @@ -0,0 +1,15 @@ +/* SPDX-License-Identifier: GPL-2.0-only OR MIT */ +/* Copyright 2025 Arm, Ltd. */ +#ifndef __ETHOSU_DRV_H__ +#define __ETHOSU_DRV_H__ + +#include + +struct ethosu_device; + +struct ethosu_file_priv { + struct ethosu_device *edev; + struct drm_sched_entity sched_entity; +}; + +#endif diff --git a/drivers/accel/ethosu/ethosu_gem.c b/drivers/accel/ethosu/ethosu_gem.c new file mode 100644 index 000000000000..473b5f5d7514 --- /dev/null +++ b/drivers/accel/ethosu/ethosu_gem.c @@ -0,0 +1,704 @@ +// SPDX-License-Identifier: GPL-2.0-only or MIT +/* Copyright 2025 Arm, Ltd. */ + +#include +#include + +#include + +#include "ethosu_device.h" +#include "ethosu_gem.h" + +static void ethosu_gem_free_object(struct drm_gem_object *obj) +{ + struct ethosu_gem_object *bo = to_ethosu_bo(obj); + + kfree(bo->info); + drm_gem_free_mmap_offset(&bo->base.base); + drm_gem_dma_free(&bo->base); +} + +static int ethosu_gem_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma) +{ + struct ethosu_gem_object *bo = to_ethosu_bo(obj); + + /* Don't allow mmap on objects that have the NO_MMAP flag set. */ + if (bo->flags & DRM_ETHOSU_BO_NO_MMAP) + return -EINVAL; + + return drm_gem_dma_object_mmap(obj, vma); +} + +static const struct drm_gem_object_funcs ethosu_gem_funcs = { + .free = ethosu_gem_free_object, + .print_info = drm_gem_dma_object_print_info, + .get_sg_table = drm_gem_dma_object_get_sg_table, + .vmap = drm_gem_dma_object_vmap, + .mmap = ethosu_gem_mmap, + .vm_ops = &drm_gem_dma_vm_ops, +}; + +/** + * ethosu_gem_create_object - Implementation of driver->gem_create_object. + * @ddev: DRM device + * @size: Size in bytes of the memory the object will reference + * + * This lets the GEM helpers allocate object structs for us, and keep + * our BO stats correct. + */ +struct drm_gem_object *ethosu_gem_create_object(struct drm_device *ddev, size_t size) +{ + struct ethosu_gem_object *obj; + + obj = kzalloc(sizeof(*obj), GFP_KERNEL); + if (!obj) + return ERR_PTR(-ENOMEM); + + obj->base.base.funcs = ðosu_gem_funcs; + return &obj->base.base; +} + +/** + * ethosu_gem_create_with_handle() - Create a GEM object and attach it to a handle. + * @file: DRM file. + * @ddev: DRM device. + * @size: Size of the GEM object to allocate. + * @flags: Combination of drm_ethosu_bo_flags flags. + * @handle: Pointer holding the handle pointing to the new GEM object. + * + * Return: Zero on success + */ +int ethosu_gem_create_with_handle(struct drm_file *file, + struct drm_device *ddev, + u64 *size, u32 flags, u32 *handle) +{ + struct drm_gem_dma_object *mem; + struct ethosu_gem_object *bo; + int ret; + + mem = drm_gem_dma_create(ddev, *size); + if (IS_ERR(mem)) + return PTR_ERR(mem); + + bo = to_ethosu_bo(&mem->base); + bo->flags = flags; + + /* + * Allocate an id of idr table where the obj is registered + * and handle has the id what user can see. + */ + ret = drm_gem_handle_create(file, &mem->base, handle); + if (!ret) + *size = bo->base.base.size; + + /* drop reference from allocate - handle holds it now. */ + drm_gem_object_put(&mem->base); + + return ret; +} + +struct dma { + s8 region; + u64 len; + u64 offset; + s64 stride[2]; +}; + +struct dma_state { + u16 size0; + u16 size1; + s8 mode; + struct dma src; + struct dma dst; +}; + +struct buffer { + u64 base; + u32 length; + s8 region; +}; + +struct feat_matrix { + u64 base[4]; + s64 stride_x; + s64 stride_y; + s64 stride_c; + s8 region; + u8 broadcast; + u16 stride_kernel; + u16 precision; + u16 depth; + u16 width; + u16 width0; + u16 height[3]; + u8 pad_top; + u8 pad_left; + u8 pad_bottom; + u8 pad_right; +}; + +struct cmd_state { + struct dma_state dma; + struct buffer scale[2]; + struct buffer weight[4]; + struct feat_matrix ofm; + struct feat_matrix ifm; + struct feat_matrix ifm2; +}; + +static void cmd_state_init(struct cmd_state *st) +{ + /* Initialize to all 1s to detect missing setup */ + memset(st, 0xff, sizeof(*st)); +} + +static u64 cmd_to_addr(u32 *cmd) +{ + return ((u64)((cmd[0] & 0xff0000) << 16)) | cmd[1]; +} + +static u64 dma_length(struct ethosu_validated_cmdstream_info *info, + struct dma_state *dma_st, struct dma *dma) +{ + s8 mode = dma_st->mode; + u64 len = dma->len; + + if (mode >= 1) { + len += dma->stride[0]; + len *= dma_st->size0; + } + if (mode == 2) { + len += dma->stride[1]; + len *= dma_st->size1; + } + if (dma->region >= 0) + info->region_size[dma->region] = max(info->region_size[dma->region], + len + dma->offset); + + return len; +} + +static u64 feat_matrix_length(struct ethosu_validated_cmdstream_info *info, + struct feat_matrix *fm, + u32 x, u32 y, u32 c) +{ + u32 element_size, storage = fm->precision >> 14; + int tile = 0; + u64 addr; + + if (fm->region < 0) + return U64_MAX; + + switch (storage) { + case 0: + if (x >= fm->width0 + 1) { + x -= fm->width0 + 1; + tile += 1; + } + if (y >= fm->height[tile] + 1) { + y -= fm->height[tile] + 1; + tile += 2; + } + break; + case 1: + if (y >= fm->height[1] + 1) { + y -= fm->height[1] + 1; + tile = 2; + } else if (y >= fm->height[0] + 1) { + y -= fm->height[0] + 1; + tile = 1; + } + break; + } + if (fm->base[tile] == U64_MAX) + return U64_MAX; + + addr = fm->base[tile] + y * fm->stride_y; + + switch ((fm->precision >> 6) & 0x3) { // format + case 0: //nhwc: + addr += x * fm->stride_x + c; + break; + case 1: //nhcwb16: + element_size = BIT((fm->precision >> 1) & 0x3); + + addr += (c / 16) * fm->stride_c + (16 * x + (c & 0xf)) * element_size; + break; + } + + info->region_size[fm->region] = max(info->region_size[fm->region], addr + 1); + + return addr; +} + +static int calc_sizes(struct drm_device *ddev, + struct ethosu_validated_cmdstream_info *info, + u16 op, struct cmd_state *st, + bool ifm, bool ifm2, bool weight, bool scale) +{ + u64 len; + + if (ifm) { + if (st->ifm.stride_kernel == U16_MAX) + return -EINVAL; + u32 stride_y = ((st->ifm.stride_kernel >> 8) & 0x2) + + ((st->ifm.stride_kernel >> 1) & 0x1) + 1; + u32 stride_x = ((st->ifm.stride_kernel >> 5) & 0x2) + + (st->ifm.stride_kernel & 0x1) + 1; + u32 ifm_height = st->ofm.height[2] * stride_y + + st->ifm.height[2] - (st->ifm.pad_top + st->ifm.pad_bottom); + u32 ifm_width = st->ofm.width * stride_x + + st->ifm.width - (st->ifm.pad_left + st->ifm.pad_right); + + len = feat_matrix_length(info, &st->ifm, ifm_width, + ifm_height, st->ifm.depth); + dev_dbg(ddev->dev, "op %d: IFM:%d:0x%llx-0x%llx\n", + op, st->ifm.region, st->ifm.base[0], len); + if (len == U64_MAX) + return -EINVAL; + } + + if (ifm2) { + len = feat_matrix_length(info, &st->ifm2, st->ifm.depth, + 0, st->ofm.depth); + dev_dbg(ddev->dev, "op %d: IFM2:%d:0x%llx-0x%llx\n", + op, st->ifm2.region, st->ifm2.base[0], len); + if (len == U64_MAX) + return -EINVAL; + } + + if (weight) { + dev_dbg(ddev->dev, "op %d: W:%d:0x%llx-0x%llx\n", + op, st->weight[0].region, st->weight[0].base, + st->weight[0].base + st->weight[0].length - 1); + if (st->weight[0].region < 0 || st->weight[0].base == U64_MAX || + st->weight[0].length == U32_MAX) + return -EINVAL; + info->region_size[st->weight[0].region] = + max(info->region_size[st->weight[0].region], + st->weight[0].base + st->weight[0].length); + } + + if (scale) { + dev_dbg(ddev->dev, "op %d: S:%d:0x%llx-0x%llx\n", + op, st->scale[0].region, st->scale[0].base, + st->scale[0].base + st->scale[0].length - 1); + if (st->scale[0].region < 0 || st->scale[0].base == U64_MAX || + st->scale[0].length == U32_MAX) + return -EINVAL; + info->region_size[st->scale[0].region] = + max(info->region_size[st->scale[0].region], + st->scale[0].base + st->scale[0].length); + } + + len = feat_matrix_length(info, &st->ofm, st->ofm.width, + st->ofm.height[2], st->ofm.depth); + dev_dbg(ddev->dev, "op %d: OFM:%d:0x%llx-0x%llx\n", + op, st->ofm.region, st->ofm.base[0], len); + if (len == U64_MAX) + return -EINVAL; + info->output_region[st->ofm.region] = true; + + return 0; +} + +static int calc_sizes_elemwise(struct drm_device *ddev, + struct ethosu_validated_cmdstream_info *info, + u16 op, struct cmd_state *st, + bool ifm, bool ifm2) +{ + u32 height, width, depth; + u64 len; + + if (ifm) { + height = st->ifm.broadcast & 0x1 ? 0 : st->ofm.height[2]; + width = st->ifm.broadcast & 0x2 ? 0 : st->ofm.width; + depth = st->ifm.broadcast & 0x4 ? 0 : st->ofm.depth; + + len = feat_matrix_length(info, &st->ifm, width, + height, depth); + dev_dbg(ddev->dev, "op %d: IFM:%d:0x%llx-0x%llx\n", + op, st->ifm.region, st->ifm.base[0], len); + if (len == U64_MAX) + return -EINVAL; + } + + if (ifm2) { + height = st->ifm2.broadcast & 0x1 ? 0 : st->ofm.height[2]; + width = st->ifm2.broadcast & 0x2 ? 0 : st->ofm.width; + depth = st->ifm2.broadcast & 0x4 ? 0 : st->ofm.depth; + + len = feat_matrix_length(info, &st->ifm2, width, + height, depth); + dev_dbg(ddev->dev, "op %d: IFM2:%d:0x%llx-0x%llx\n", + op, st->ifm2.region, st->ifm2.base[0], len); + if (len == U64_MAX) + return -EINVAL; + } + + len = feat_matrix_length(info, &st->ofm, st->ofm.width, + st->ofm.height[2], st->ofm.depth); + dev_dbg(ddev->dev, "op %d: OFM:%d:0x%llx-0x%llx\n", + op, st->ofm.region, st->ofm.base[0], len); + if (len == U64_MAX) + return -EINVAL; + info->output_region[st->ofm.region] = true; + + return 0; +} + +static int ethosu_gem_cmdstream_copy_and_validate(struct drm_device *ddev, + u32 __user *ucmds, + struct ethosu_gem_object *bo, + u32 size) +{ + struct ethosu_validated_cmdstream_info __free(kfree) *info = kzalloc(sizeof(*info), GFP_KERNEL); + struct ethosu_device *edev = to_ethosu_device(ddev); + u32 *bocmds = bo->base.vaddr; + struct cmd_state st; + int i, ret; + + if (!info) + return -ENOMEM; + info->cmd_size = size; + + cmd_state_init(&st); + + for (i = 0; i < size / 4; i++) { + bool use_ifm, use_ifm2, use_scale; + u64 dstlen, srclen; + u16 cmd, param; + u32 cmds[2]; + u64 addr; + + if (get_user(cmds[0], ucmds++)) + return -EFAULT; + + bocmds[i] = cmds[0]; + + cmd = cmds[0]; + param = cmds[0] >> 16; + + if (cmd & 0x4000) { + if (get_user(cmds[1], ucmds++)) + return -EFAULT; + + i++; + bocmds[i] = cmds[1]; + addr = cmd_to_addr(cmds); + } + + switch (cmd) { + case NPU_OP_DMA_START: + srclen = dma_length(info, &st.dma, &st.dma.src); + dstlen = dma_length(info, &st.dma, &st.dma.dst); + + if (st.dma.dst.region >= 0) + info->output_region[st.dma.dst.region] = true; + dev_dbg(ddev->dev, "cmd: DMA SRC:%d:0x%llx+0x%llx DST:%d:0x%llx+0x%llx\n", + st.dma.src.region, st.dma.src.offset, srclen, + st.dma.dst.region, st.dma.dst.offset, dstlen); + break; + case NPU_OP_CONV: + case NPU_OP_DEPTHWISE: + use_ifm2 = param & 0x1; // weights_ifm2 + use_scale = !(st.ofm.precision & 0x100); + ret = calc_sizes(ddev, info, cmd, &st, true, use_ifm2, + !use_ifm2, use_scale); + if (ret) + return ret; + break; + case NPU_OP_POOL: + use_ifm = param != 0x4; // pooling mode + use_scale = !(st.ofm.precision & 0x100); + ret = calc_sizes(ddev, info, cmd, &st, use_ifm, false, + false, use_scale); + if (ret) + return ret; + break; + case NPU_OP_ELEMENTWISE: + use_ifm2 = !((st.ifm2.broadcast == 8) || (param == 5) || + (param == 6) || (param == 7) || (param == 0x24)); + use_ifm = st.ifm.broadcast != 8; + ret = calc_sizes_elemwise(ddev, info, cmd, &st, use_ifm, use_ifm2); + if (ret) + return ret; + break; + case NPU_OP_RESIZE: // U85 only + WARN_ON(1); // TODO + break; + case NPU_SET_KERNEL_WIDTH_M1: + st.ifm.width = param; + break; + case NPU_SET_KERNEL_HEIGHT_M1: + st.ifm.height[2] = param; + break; + case NPU_SET_KERNEL_STRIDE: + st.ifm.stride_kernel = param; + break; + case NPU_SET_IFM_PAD_TOP: + st.ifm.pad_top = param & 0x7f; + break; + case NPU_SET_IFM_PAD_LEFT: + st.ifm.pad_left = param & 0x7f; + break; + case NPU_SET_IFM_PAD_RIGHT: + st.ifm.pad_right = param & 0xff; + break; + case NPU_SET_IFM_PAD_BOTTOM: + st.ifm.pad_bottom = param & 0xff; + break; + case NPU_SET_IFM_DEPTH_M1: + st.ifm.depth = param; + break; + case NPU_SET_IFM_PRECISION: + st.ifm.precision = param; + break; + case NPU_SET_IFM_BROADCAST: + st.ifm.broadcast = param; + break; + case NPU_SET_IFM_REGION: + st.ifm.region = param & 0x7f; + break; + case NPU_SET_IFM_WIDTH0_M1: + st.ifm.width0 = param; + break; + case NPU_SET_IFM_HEIGHT0_M1: + st.ifm.height[0] = param; + break; + case NPU_SET_IFM_HEIGHT1_M1: + st.ifm.height[1] = param; + break; + case NPU_SET_IFM_BASE0: + case NPU_SET_IFM_BASE1: + case NPU_SET_IFM_BASE2: + case NPU_SET_IFM_BASE3: + st.ifm.base[cmd & 0x3] = addr; + break; + case NPU_SET_IFM_STRIDE_X: + st.ifm.stride_x = addr; + break; + case NPU_SET_IFM_STRIDE_Y: + st.ifm.stride_y = addr; + break; + case NPU_SET_IFM_STRIDE_C: + st.ifm.stride_c = addr; + break; + + case NPU_SET_OFM_WIDTH_M1: + st.ofm.width = param; + break; + case NPU_SET_OFM_HEIGHT_M1: + st.ofm.height[2] = param; + break; + case NPU_SET_OFM_DEPTH_M1: + st.ofm.depth = param; + break; + case NPU_SET_OFM_PRECISION: + st.ofm.precision = param; + break; + case NPU_SET_OFM_REGION: + st.ofm.region = param & 0x7; + break; + case NPU_SET_OFM_WIDTH0_M1: + st.ofm.width0 = param; + break; + case NPU_SET_OFM_HEIGHT0_M1: + st.ofm.height[0] = param; + break; + case NPU_SET_OFM_HEIGHT1_M1: + st.ofm.height[1] = param; + break; + case NPU_SET_OFM_BASE0: + case NPU_SET_OFM_BASE1: + case NPU_SET_OFM_BASE2: + case NPU_SET_OFM_BASE3: + st.ofm.base[cmd & 0x3] = addr; + break; + case NPU_SET_OFM_STRIDE_X: + st.ofm.stride_x = addr; + break; + case NPU_SET_OFM_STRIDE_Y: + st.ofm.stride_y = addr; + break; + case NPU_SET_OFM_STRIDE_C: + st.ofm.stride_c = addr; + break; + + case NPU_SET_IFM2_BROADCAST: + st.ifm2.broadcast = param; + break; + case NPU_SET_IFM2_PRECISION: + st.ifm2.precision = param; + break; + case NPU_SET_IFM2_REGION: + st.ifm2.region = param & 0x7; + break; + case NPU_SET_IFM2_WIDTH0_M1: + st.ifm2.width0 = param; + break; + case NPU_SET_IFM2_HEIGHT0_M1: + st.ifm2.height[0] = param; + break; + case NPU_SET_IFM2_HEIGHT1_M1: + st.ifm2.height[1] = param; + break; + case NPU_SET_IFM2_BASE0: + case NPU_SET_IFM2_BASE1: + case NPU_SET_IFM2_BASE2: + case NPU_SET_IFM2_BASE3: + st.ifm2.base[cmd & 0x3] = addr; + break; + case NPU_SET_IFM2_STRIDE_X: + st.ifm2.stride_x = addr; + break; + case NPU_SET_IFM2_STRIDE_Y: + st.ifm2.stride_y = addr; + break; + case NPU_SET_IFM2_STRIDE_C: + st.ifm2.stride_c = addr; + break; + + case NPU_SET_WEIGHT_REGION: + st.weight[0].region = param & 0x7; + break; + case NPU_SET_SCALE_REGION: + st.scale[0].region = param & 0x7; + break; + case NPU_SET_WEIGHT_BASE: + st.weight[0].base = addr; + break; + case NPU_SET_WEIGHT_LENGTH: + st.weight[0].length = cmds[1]; + break; + case NPU_SET_SCALE_BASE: + st.scale[0].base = addr; + break; + case NPU_SET_SCALE_LENGTH: + st.scale[0].length = cmds[1]; + break; + case NPU_SET_WEIGHT1_BASE: + st.weight[1].base = addr; + break; + case NPU_SET_WEIGHT1_LENGTH: + st.weight[1].length = cmds[1]; + break; + case NPU_SET_SCALE1_BASE: // NPU_SET_WEIGHT2_BASE (U85) + if (ethosu_is_u65(edev)) + st.scale[1].base = addr; + else + st.weight[2].base = addr; + break; + case NPU_SET_SCALE1_LENGTH: // NPU_SET_WEIGHT2_LENGTH (U85) + if (ethosu_is_u65(edev)) + st.scale[1].length = cmds[1]; + else + st.weight[1].length = cmds[1]; + break; + case NPU_SET_WEIGHT3_BASE: + st.weight[3].base = addr; + break; + case NPU_SET_WEIGHT3_LENGTH: + st.weight[3].length = cmds[1]; + break; + + case NPU_SET_DMA0_SRC_REGION: + if (param & 0x100) + st.dma.src.region = -1; + else + st.dma.src.region = param & 0x7; + st.dma.mode = (param >> 9) & 0x3; + break; + case NPU_SET_DMA0_DST_REGION: + if (param & 0x100) + st.dma.dst.region = -1; + else + st.dma.dst.region = param & 0x7; + break; + case NPU_SET_DMA0_SIZE0: + st.dma.size0 = param; + break; + case NPU_SET_DMA0_SIZE1: + st.dma.size1 = param; + break; + case NPU_SET_DMA0_SRC_STRIDE0: + st.dma.src.stride[0] = ((s64)addr << 24) >> 24; + break; + case NPU_SET_DMA0_SRC_STRIDE1: + st.dma.src.stride[1] = ((s64)addr << 24) >> 24; + break; + case NPU_SET_DMA0_DST_STRIDE0: + st.dma.dst.stride[0] = ((s64)addr << 24) >> 24; + break; + case NPU_SET_DMA0_DST_STRIDE1: + st.dma.dst.stride[1] = ((s64)addr << 24) >> 24; + break; + case NPU_SET_DMA0_SRC: + st.dma.src.offset = addr; + break; + case NPU_SET_DMA0_DST: + st.dma.dst.offset = addr; + break; + case NPU_SET_DMA0_LEN: + st.dma.src.len = st.dma.dst.len = addr; + break; + default: + break; + } + } + + for (i = 0; i < NPU_BASEP_REGION_MAX; i++) { + if (!info->region_size[i]) + continue; + dev_dbg(ddev->dev, "region %d max size: 0x%llx\n", + i, info->region_size[i]); + } + + bo->info = no_free_ptr(info); + return 0; +} + +/** + * ethosu_gem_cmdstream_create() - Create a GEM object and attach it to a handle. + * @file: DRM file. + * @ddev: DRM device. + * @exclusive_vm: Exclusive VM. Not NULL if the GEM object can't be shared. + * @size: Size of the GEM object to allocate. + * @flags: Combination of drm_ethosu_bo_flags flags. + * @handle: Pointer holding the handle pointing to the new GEM object. + * + * Return: Zero on success + */ +int ethosu_gem_cmdstream_create(struct drm_file *file, + struct drm_device *ddev, + u32 size, u64 data, u32 flags, u32 *handle) +{ + int ret; + struct drm_gem_dma_object *mem; + struct ethosu_gem_object *bo; + + mem = drm_gem_dma_create(ddev, size); + if (IS_ERR(mem)) + return PTR_ERR(mem); + + bo = to_ethosu_bo(&mem->base); + bo->flags = flags; + + ret = ethosu_gem_cmdstream_copy_and_validate(ddev, + (void __user *)(uintptr_t)data, + bo, size); + if (ret) + goto fail; + + /* + * Allocate an id of idr table where the obj is registered + * and handle has the id what user can see. + */ + ret = drm_gem_handle_create(file, &mem->base, handle); + +fail: + /* drop reference from allocate - handle holds it now. */ + drm_gem_object_put(&mem->base); + + return ret; +} diff --git a/drivers/accel/ethosu/ethosu_gem.h b/drivers/accel/ethosu/ethosu_gem.h new file mode 100644 index 000000000000..3922895a60fb --- /dev/null +++ b/drivers/accel/ethosu/ethosu_gem.h @@ -0,0 +1,46 @@ +/* SPDX-License-Identifier: GPL-2.0 or MIT */ +/* Copyright 2025 Arm, Ltd. */ + +#ifndef __ETHOSU_GEM_H__ +#define __ETHOSU_GEM_H__ + +#include "ethosu_device.h" +#include + +struct ethosu_validated_cmdstream_info { + u32 cmd_size; + u64 region_size[NPU_BASEP_REGION_MAX]; + bool output_region[NPU_BASEP_REGION_MAX]; +}; + +/** + * struct ethosu_gem_object - Driver specific GEM object. + */ +struct ethosu_gem_object { + /** @base: Inherit from drm_gem_shmem_object. */ + struct drm_gem_dma_object base; + + struct ethosu_validated_cmdstream_info *info; + + /** @flags: Combination of drm_ethosu_bo_flags flags. */ + u32 flags; +}; + +static inline +struct ethosu_gem_object *to_ethosu_bo(struct drm_gem_object *obj) +{ + return container_of(to_drm_gem_dma_obj(obj), struct ethosu_gem_object, base); +} + +struct drm_gem_object *ethosu_gem_create_object(struct drm_device *ddev, + size_t size); + +int ethosu_gem_create_with_handle(struct drm_file *file, + struct drm_device *ddev, + u64 *size, u32 flags, uint32_t *handle); + +int ethosu_gem_cmdstream_create(struct drm_file *file, + struct drm_device *ddev, + u32 size, u64 data, u32 flags, u32 *handle); + +#endif /* __ETHOSU_GEM_H__ */ diff --git a/drivers/accel/ethosu/ethosu_job.c b/drivers/accel/ethosu/ethosu_job.c new file mode 100644 index 000000000000..32b89cbfbaad --- /dev/null +++ b/drivers/accel/ethosu/ethosu_job.c @@ -0,0 +1,496 @@ +// SPDX-License-Identifier: GPL-2.0-only OR MIT +/* Copyright 2024-2025 Tomeu Vizoso */ +/* Copyright 2025 Arm, Ltd. */ + +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include + +#include "ethosu_device.h" +#include "ethosu_drv.h" +#include "ethosu_gem.h" +#include "ethosu_job.h" + +#define JOB_TIMEOUT_MS 500 + +static struct ethosu_job *to_ethosu_job(struct drm_sched_job *sched_job) +{ + return container_of(sched_job, struct ethosu_job, base); +} + +static const char *ethosu_fence_get_driver_name(struct dma_fence *fence) +{ + return "ethosu"; +} + +static const char *ethosu_fence_get_timeline_name(struct dma_fence *fence) +{ + return "ethosu-npu"; +} + +static const struct dma_fence_ops ethosu_fence_ops = { + .get_driver_name = ethosu_fence_get_driver_name, + .get_timeline_name = ethosu_fence_get_timeline_name, +}; + +static void ethosu_job_hw_submit(struct ethosu_device *dev, struct ethosu_job *job) +{ + struct drm_gem_dma_object *cmd_bo = to_drm_gem_dma_obj(job->cmd_bo); + struct ethosu_validated_cmdstream_info *cmd_info = to_ethosu_bo(job->cmd_bo)->info; + + for (int i = 0; i < job->region_cnt; i++) { + struct drm_gem_dma_object *bo; + int region = job->region_bo_num[i]; + + bo = to_drm_gem_dma_obj(job->region_bo[i]); + writel_relaxed(lower_32_bits(bo->dma_addr), dev->regs + NPU_REG_BASEP(region)); + writel_relaxed(upper_32_bits(bo->dma_addr), dev->regs + NPU_REG_BASEP_HI(region)); + dev_dbg(dev->base.dev, "Region %d base addr = %pad\n", region, &bo->dma_addr); + } + + if (job->sram_size) { + writel_relaxed(lower_32_bits(dev->sramphys), + dev->regs + NPU_REG_BASEP(ETHOSU_SRAM_REGION)); + writel_relaxed(upper_32_bits(dev->sramphys), + dev->regs + NPU_REG_BASEP_HI(ETHOSU_SRAM_REGION)); + dev_dbg(dev->base.dev, "Region %d base addr = %pad (SRAM)\n", + ETHOSU_SRAM_REGION, &dev->sramphys); + } + + writel_relaxed(lower_32_bits(cmd_bo->dma_addr), dev->regs + NPU_REG_QBASE); + writel_relaxed(upper_32_bits(cmd_bo->dma_addr), dev->regs + NPU_REG_QBASE_HI); + writel_relaxed(cmd_info->cmd_size, dev->regs + NPU_REG_QSIZE); + + writel(CMD_TRANSITION_TO_RUN, dev->regs + NPU_REG_CMD); + + dev_dbg(dev->base.dev, + "Submitted cmd at %pad to core\n", &cmd_bo->dma_addr); +} + +static int ethosu_acquire_object_fences(struct ethosu_job *job) +{ + int i, ret; + struct drm_gem_object **bos = job->region_bo; + struct ethosu_validated_cmdstream_info *info = to_ethosu_bo(job->cmd_bo)->info; + + for (i = 0; i < job->region_cnt; i++) { + bool is_write; + + if (!bos[i]) + break; + + ret = dma_resv_reserve_fences(bos[i]->resv, 1); + if (ret) + return ret; + + is_write = info->output_region[job->region_bo_num[i]]; + ret = drm_sched_job_add_implicit_dependencies(&job->base, bos[i], + is_write); + if (ret) + return ret; + } + + return 0; +} + +static void ethosu_attach_object_fences(struct ethosu_job *job) +{ + int i; + struct dma_fence *fence = job->inference_done_fence; + struct drm_gem_object **bos = job->region_bo; + struct ethosu_validated_cmdstream_info *info = to_ethosu_bo(job->cmd_bo)->info; + + for (i = 0; i < job->region_cnt; i++) + if (info->output_region[job->region_bo_num[i]]) + dma_resv_add_fence(bos[i]->resv, fence, DMA_RESV_USAGE_WRITE); +} + +static int ethosu_job_push(struct ethosu_job *job) +{ + struct ww_acquire_ctx acquire_ctx; + int ret; + + ret = drm_gem_lock_reservations(job->region_bo, job->region_cnt, &acquire_ctx); + if (ret) + return ret; + + ret = ethosu_acquire_object_fences(job); + if (ret) + goto out; + + ret = pm_runtime_resume_and_get(job->dev->base.dev); + if (!ret) { + guard(mutex)(&job->dev->sched_lock); + + drm_sched_job_arm(&job->base); + job->inference_done_fence = dma_fence_get(&job->base.s_fence->finished); + kref_get(&job->refcount); /* put by scheduler job completion */ + drm_sched_entity_push_job(&job->base); + ethosu_attach_object_fences(job); + } + +out: + drm_gem_unlock_reservations(job->region_bo, job->region_cnt, &acquire_ctx); + return ret; +} + +static void ethosu_job_cleanup(struct kref *ref) +{ + struct ethosu_job *job = container_of(ref, struct ethosu_job, + refcount); + unsigned int i; + + pm_runtime_put_autosuspend(job->dev->base.dev); + + dma_fence_put(job->done_fence); + dma_fence_put(job->inference_done_fence); + + for (i = 0; i < job->region_cnt; i++) + drm_gem_object_put(job->region_bo[i]); + + drm_gem_object_put(job->cmd_bo); + + kfree(job); +} + +static void ethosu_job_put(struct ethosu_job *job) +{ + kref_put(&job->refcount, ethosu_job_cleanup); +} + +static void ethosu_job_free(struct drm_sched_job *sched_job) +{ + struct ethosu_job *job = to_ethosu_job(sched_job); + + drm_sched_job_cleanup(sched_job); + ethosu_job_put(job); +} + +static struct dma_fence *ethosu_job_run(struct drm_sched_job *sched_job) +{ + struct ethosu_job *job = to_ethosu_job(sched_job); + struct ethosu_device *dev = job->dev; + struct dma_fence *fence = job->done_fence; + + if (unlikely(job->base.s_fence->finished.error)) + return NULL; + + dma_fence_init(fence, ðosu_fence_ops, &dev->fence_lock, + dev->fence_context, ++dev->emit_seqno); + dma_fence_get(fence); + + scoped_guard(mutex, &dev->job_lock) { + dev->in_flight_job = job; + ethosu_job_hw_submit(dev, job); + } + + return fence; +} + +static void ethosu_job_handle_irq(struct ethosu_device *dev) +{ + u32 status = readl_relaxed(dev->regs + NPU_REG_STATUS); + + if (status & (STATUS_BUS_STATUS | STATUS_CMD_PARSE_ERR)) { + dev_err(dev->base.dev, "Error IRQ - %x\n", status); + drm_sched_fault(&dev->sched); + return; + } + + scoped_guard(mutex, &dev->job_lock) { + if (dev->in_flight_job) { + dma_fence_signal(dev->in_flight_job->done_fence); + dev->in_flight_job = NULL; + } + } +} + +static irqreturn_t ethosu_job_irq_handler_thread(int irq, void *data) +{ + struct ethosu_device *dev = data; + + ethosu_job_handle_irq(dev); + + return IRQ_HANDLED; +} + +static irqreturn_t ethosu_job_irq_handler(int irq, void *data) +{ + struct ethosu_device *dev = data; + u32 status = readl_relaxed(dev->regs + NPU_REG_STATUS); + + if (!(status & STATUS_IRQ_RAISED)) + return IRQ_NONE; + + writel_relaxed(CMD_CLEAR_IRQ, dev->regs + NPU_REG_CMD); + return IRQ_WAKE_THREAD; +} + +static enum drm_gpu_sched_stat ethosu_job_timedout(struct drm_sched_job *bad) +{ + struct ethosu_job *job = to_ethosu_job(bad); + struct ethosu_device *dev = job->dev; + bool running; + u32 *bocmds = to_drm_gem_dma_obj(job->cmd_bo)->vaddr; + u32 cmdaddr; + + cmdaddr = readl_relaxed(dev->regs + NPU_REG_QREAD); + running = FIELD_GET(STATUS_STATE_RUNNING, readl_relaxed(dev->regs + NPU_REG_STATUS)); + + if (running) { + int ret; + u32 reg; + + ret = readl_relaxed_poll_timeout(dev->regs + NPU_REG_QREAD, + reg, + reg != cmdaddr, + USEC_PER_MSEC, 100 * USEC_PER_MSEC); + + /* If still running and progress is being made, just return */ + if (!ret) + return DRM_GPU_SCHED_STAT_NO_HANG; + } + + dev_err(dev->base.dev, "NPU sched timed out: NPU %s, cmdstream offset 0x%x: 0x%x\n", + running ? "running" : "stopped", + cmdaddr, bocmds[cmdaddr / 4]); + + drm_sched_stop(&dev->sched, bad); + + scoped_guard(mutex, &dev->job_lock) + dev->in_flight_job = NULL; + + /* Proceed with reset now. */ + pm_runtime_force_suspend(dev->base.dev); + pm_runtime_force_resume(dev->base.dev); + + /* Restart the scheduler */ + drm_sched_start(&dev->sched, 0); + + return DRM_GPU_SCHED_STAT_RESET; +} + +static const struct drm_sched_backend_ops ethosu_sched_ops = { + .run_job = ethosu_job_run, + .timedout_job = ethosu_job_timedout, + .free_job = ethosu_job_free +}; + +int ethosu_job_init(struct ethosu_device *edev) +{ + struct device *dev = edev->base.dev; + struct drm_sched_init_args args = { + .ops = ðosu_sched_ops, + .num_rqs = DRM_SCHED_PRIORITY_COUNT, + .credit_limit = 1, + .timeout = msecs_to_jiffies(JOB_TIMEOUT_MS), + .name = dev_name(dev), + .dev = dev, + }; + int ret; + + spin_lock_init(&edev->fence_lock); + ret = devm_mutex_init(dev, &edev->job_lock); + if (ret) + return ret; + ret = devm_mutex_init(dev, &edev->sched_lock); + if (ret) + return ret; + + edev->irq = platform_get_irq(to_platform_device(dev), 0); + if (edev->irq < 0) + return edev->irq; + + ret = devm_request_threaded_irq(dev, edev->irq, + ethosu_job_irq_handler, + ethosu_job_irq_handler_thread, + IRQF_SHARED, KBUILD_MODNAME, + edev); + if (ret) { + dev_err(dev, "failed to request irq\n"); + return ret; + } + + edev->fence_context = dma_fence_context_alloc(1); + + ret = drm_sched_init(&edev->sched, &args); + if (ret) { + dev_err(dev, "Failed to create scheduler: %d\n", ret); + goto err_sched; + } + + return 0; + +err_sched: + drm_sched_fini(&edev->sched); + return ret; +} + +void ethosu_job_fini(struct ethosu_device *dev) +{ + drm_sched_fini(&dev->sched); +} + +int ethosu_job_open(struct ethosu_file_priv *ethosu_priv) +{ + struct ethosu_device *dev = ethosu_priv->edev; + struct drm_gpu_scheduler *sched = &dev->sched; + int ret; + + ret = drm_sched_entity_init(ðosu_priv->sched_entity, + DRM_SCHED_PRIORITY_NORMAL, + &sched, 1, NULL); + return WARN_ON(ret); +} + +void ethosu_job_close(struct ethosu_file_priv *ethosu_priv) +{ + struct drm_sched_entity *entity = ðosu_priv->sched_entity; + + drm_sched_entity_destroy(entity); +} + +static int ethosu_ioctl_submit_job(struct drm_device *dev, struct drm_file *file, + struct drm_ethosu_job *job) +{ + struct ethosu_device *edev = to_ethosu_device(dev); + struct ethosu_file_priv *file_priv = file->driver_priv; + struct ethosu_job *ejob = NULL; + struct ethosu_validated_cmdstream_info *cmd_info; + int ret = 0; + + /* BO region 2 is reserved if SRAM is used */ + if (job->region_bo_handles[ETHOSU_SRAM_REGION] && job->sram_size) + return -EINVAL; + + if (edev->npu_info.sram_size < job->sram_size) + return -EINVAL; + + ejob = kzalloc(sizeof(*ejob), GFP_KERNEL); + if (!ejob) + return -ENOMEM; + + kref_init(&ejob->refcount); + + ejob->dev = edev; + ejob->sram_size = job->sram_size; + + ejob->done_fence = kzalloc(sizeof(*ejob->done_fence), GFP_KERNEL); + if (!ejob->done_fence) { + ret = -ENOMEM; + goto out_cleanup_job; + } + + ret = drm_sched_job_init(&ejob->base, + &file_priv->sched_entity, + 1, NULL, file->client_id); + if (ret) + goto out_put_job; + + ejob->cmd_bo = drm_gem_object_lookup(file, job->cmd_bo); + if (!ejob->cmd_bo) { + ret = -ENOENT; + goto out_cleanup_job; + } + cmd_info = to_ethosu_bo(ejob->cmd_bo)->info; + if (!cmd_info) { + ret = -EINVAL; + goto out_cleanup_job; + } + + for (int i = 0; i < NPU_BASEP_REGION_MAX; i++) { + struct drm_gem_object *gem; + + /* Can only omit a BO handle if the region is not used or used for SRAM */ + if (!job->region_bo_handles[i] && + (!cmd_info->region_size[i] || (i == ETHOSU_SRAM_REGION && job->sram_size))) + continue; + + if (job->region_bo_handles[i] && !cmd_info->region_size[i]) { + dev_err(dev->dev, + "Cmdstream BO handle %d set for unused region %d\n", + job->region_bo_handles[i], i); + ret = -EINVAL; + goto out_cleanup_job; + } + + gem = drm_gem_object_lookup(file, job->region_bo_handles[i]); + if (!gem) { + dev_err(dev->dev, + "Invalid BO handle %d for region %d\n", + job->region_bo_handles[i], i); + ret = -ENOENT; + goto out_cleanup_job; + } + + ejob->region_bo[ejob->region_cnt] = gem; + ejob->region_bo_num[ejob->region_cnt] = i; + ejob->region_cnt++; + + if (to_ethosu_bo(gem)->info) { + dev_err(dev->dev, + "Cmdstream BO handle %d used for region %d\n", + job->region_bo_handles[i], i); + ret = -EINVAL; + goto out_cleanup_job; + } + + /* Verify the command stream doesn't have accesses outside the BO */ + if (cmd_info->region_size[i] > gem->size) { + dev_err(dev->dev, + "cmd stream region %d size greater than BO size (%llu > %zu)\n", + i, cmd_info->region_size[i], gem->size); + ret = -EOVERFLOW; + goto out_cleanup_job; + } + } + ret = ethosu_job_push(ejob); + +out_cleanup_job: + if (ret) + drm_sched_job_cleanup(&ejob->base); +out_put_job: + ethosu_job_put(ejob); + + return ret; +} + +int ethosu_ioctl_submit(struct drm_device *dev, void *data, struct drm_file *file) +{ + struct drm_ethosu_submit *args = data; + int ret = 0; + unsigned int i = 0; + + if (args->pad) { + drm_dbg(dev, "Reserved field in drm_ethosu_submit struct should be 0.\n"); + return -EINVAL; + } + + struct drm_ethosu_job __free(kvfree) *jobs = + kvmalloc_array(args->job_count, sizeof(*jobs), GFP_KERNEL); + if (!jobs) + return -ENOMEM; + + if (copy_from_user(jobs, + (void __user *)(uintptr_t)args->jobs, + args->job_count * sizeof(*jobs))) { + drm_dbg(dev, "Failed to copy incoming job array\n"); + return -EFAULT; + } + + for (i = 0; i < args->job_count; i++) { + ret = ethosu_ioctl_submit_job(dev, file, &jobs[i]); + if (ret) + return ret; + } + + return 0; +} diff --git a/drivers/accel/ethosu/ethosu_job.h b/drivers/accel/ethosu/ethosu_job.h new file mode 100644 index 000000000000..ff1cf448d094 --- /dev/null +++ b/drivers/accel/ethosu/ethosu_job.h @@ -0,0 +1,40 @@ +/* SPDX-License-Identifier: GPL-2.0-only OR MIT */ +/* Copyright 2024-2025 Tomeu Vizoso */ +/* Copyright 2025 Arm, Ltd. */ + +#ifndef __ETHOSU_JOB_H__ +#define __ETHOSU_JOB_H__ + +#include +#include + +struct ethosu_device; +struct ethosu_file_priv; + +struct ethosu_job { + struct drm_sched_job base; + struct ethosu_device *dev; + + struct drm_gem_object *cmd_bo; + struct drm_gem_object *region_bo[NPU_BASEP_REGION_MAX]; + u8 region_bo_num[NPU_BASEP_REGION_MAX]; + u8 region_cnt; + u32 sram_size; + + /* Fence to be signaled by drm-sched once its done with the job */ + struct dma_fence *inference_done_fence; + + /* Fence to be signaled by IRQ handler when the job is complete. */ + struct dma_fence *done_fence; + + struct kref refcount; +}; + +int ethosu_ioctl_submit(struct drm_device *dev, void *data, struct drm_file *file); + +int ethosu_job_init(struct ethosu_device *dev); +void ethosu_job_fini(struct ethosu_device *dev); +int ethosu_job_open(struct ethosu_file_priv *ethosu_priv); +void ethosu_job_close(struct ethosu_file_priv *ethosu_priv); + +#endif diff --git a/include/uapi/drm/ethosu_accel.h b/include/uapi/drm/ethosu_accel.h new file mode 100644 index 000000000000..af78bb4686d7 --- /dev/null +++ b/include/uapi/drm/ethosu_accel.h @@ -0,0 +1,261 @@ +/* SPDX-License-Identifier: MIT */ +/* Copyright (C) 2025 Arm, Ltd. */ +#ifndef _ETHOSU_DRM_H_ +#define _ETHOSU_DRM_H_ + +#include "drm.h" + +#if defined(__cplusplus) +extern "C" { +#endif + +/** + * DOC: IOCTL IDs + * + * enum drm_ethosu_ioctl_id - IOCTL IDs + * + * Place new ioctls at the end, don't re-order, don't replace or remove entries. + * + * These IDs are not meant to be used directly. Use the DRM_IOCTL_ETHOSU_xxx + * definitions instead. + */ +enum drm_ethosu_ioctl_id { + /** @DRM_ETHOSU_DEV_QUERY: Query device information. */ + DRM_ETHOSU_DEV_QUERY = 0, + + /** @DRM_ETHOSU_BO_CREATE: Create a buffer object. */ + DRM_ETHOSU_BO_CREATE, + + /** @DRM_ETHOSU_BO_WAIT: Wait on a buffer object's fence. */ + DRM_ETHOSU_BO_WAIT, + + /** + * @DRM_ETHOSU_BO_MMAP_OFFSET: Get the file offset to pass to + * mmap to map a GEM object. + */ + DRM_ETHOSU_BO_MMAP_OFFSET, + + /** + * @DRM_ETHOSU_CMDSTREAM_BO_CREATE: Create a command stream buffer + * object. + */ + DRM_ETHOSU_CMDSTREAM_BO_CREATE, + + /** @DRM_ETHOSU_SUBMIT: Submit a job and BOs to run. */ + DRM_ETHOSU_SUBMIT, +}; + +/** + * DOC: IOCTL arguments + */ + +/** + * enum drm_ethosu_dev_query_type - Query type + * + * Place new types at the end, don't re-order, don't remove or replace. + */ +enum drm_ethosu_dev_query_type { + /** @DRM_ETHOSU_DEV_QUERY_NPU_INFO: Query NPU information. */ + DRM_ETHOSU_DEV_QUERY_NPU_INFO = 0, +}; + +/** + * struct drm_ethosu_gpu_info - NPU information + * + * Structure grouping all queryable information relating to the NPU. + */ +struct drm_ethosu_npu_info { + /** @id : NPU ID. */ + __u32 id; +#define DRM_ETHOSU_ARCH_MAJOR(x) ((x) >> 28) +#define DRM_ETHOSU_ARCH_MINOR(x) (((x) >> 20) & 0xff) +#define DRM_ETHOSU_ARCH_PATCH(x) (((x) >> 16) & 0xf) +#define DRM_ETHOSU_PRODUCT_MAJOR(x) (((x) >> 12) & 0xf) +#define DRM_ETHOSU_VERSION_MAJOR(x) (((x) >> 8) & 0xf) +#define DRM_ETHOSU_VERSION_MINOR(x) (((x) >> 4) & 0xff) +#define DRM_ETHOSU_VERSION_STATUS(x) ((x) & 0xf) + + /** @gpu_rev: GPU revision. */ + __u32 config; + + __u32 sram_size; +}; + +/** + * struct drm_ethosu_dev_query - Arguments passed to DRM_ETHOSU_IOCTL_DEV_QUERY + */ +struct drm_ethosu_dev_query { + /** @type: the query type (see drm_ethosu_dev_query_type). */ + __u32 type; + + /** + * @size: size of the type being queried. + * + * If pointer is NULL, size is updated by the driver to provide the + * output structure size. If pointer is not NULL, the driver will + * only copy min(size, actual_structure_size) bytes to the pointer, + * and update the size accordingly. This allows us to extend query + * types without breaking userspace. + */ + __u32 size; + + /** + * @pointer: user pointer to a query type struct. + * + * Pointer can be NULL, in which case, nothing is copied, but the + * actual structure size is returned. If not NULL, it must point to + * a location that's large enough to hold size bytes. + */ + __u64 pointer; +}; + +/** + * enum drm_ethosu_bo_flags - Buffer object flags, passed at creation time. + */ +enum drm_ethosu_bo_flags { + /** + * @DRM_ETHOSU_BO_NO_MMAP: The buffer object will never be CPU-mapped + * in userspace. + */ + DRM_ETHOSU_BO_NO_MMAP = (1 << 0), +}; + +/** + * struct drm_ethosu_bo_create - Arguments passed to DRM_IOCTL_ETHOSU_BO_CREATE. + */ +struct drm_ethosu_bo_create { + /** + * @size: Requested size for the object + * + * The (page-aligned) allocated size for the object will be returned. + */ + __u64 size; + + /** + * @flags: Flags. Must be a combination of drm_ethosu_bo_flags flags. + */ + __u32 flags; + + /** + * @handle: Returned handle for the object. + * + * Object handles are nonzero. + */ + __u32 handle; +}; + +/** + * struct drm_ethosu_bo_mmap_offset - Arguments passed to DRM_IOCTL_ETHOSU_BO_MMAP_OFFSET. + */ +struct drm_ethosu_bo_mmap_offset { + /** @handle: Handle of the object we want an mmap offset for. */ + __u32 handle; + + /** @pad: MBZ. */ + __u32 pad; + + /** @offset: The fake offset to use for subsequent mmap calls. */ + __u64 offset; +}; + +/** + * struct drm_ethosu_wait_bo - ioctl argument for waiting for + * completion of the last DRM_ETHOSU_SUBMIT on a BO. + * + * This is useful for cases where multiple processes might be + * rendering to a BO and you want to wait for all rendering to be + * completed. + */ +struct drm_ethosu_bo_wait { + __u32 handle; + __u32 pad; + __s64 timeout_ns; /* absolute */ +}; + +struct drm_ethosu_cmdstream_bo_create { + /* Size of the data argument. */ + __u32 size; + + /* Flags, currently must be 0. */ + __u32 flags; + + /* Pointer to the data. */ + __u64 data; + + /** Returned GEM handle for the BO. */ + __u32 handle; + + /* Pad, must be 0. */ + __u32 pad; +}; + +/** + * struct drm_ethosu_job - A job to be run on the NPU + * + * The kernel will schedule the execution of this job taking into account its + * dependencies with other jobs. All tasks in the same job will be executed + * sequentially on the same core, to benefit from memory residency in SRAM. + */ +struct drm_ethosu_job { + /** Input: BO handle for cmdstream. */ + __u32 cmd_bo; + + /** Input: Amount of SRAM to use. */ + __u32 sram_size; + +#define ETHOSU_MAX_REGIONS 8 + /** Input: Array of BO handles for each region. */ + __u32 region_bo_handles[ETHOSU_MAX_REGIONS]; +}; + +/** + * struct drm_ethosu_submit - ioctl argument for submitting commands to the NPU. + * + * The kernel will schedule the execution of these jobs in dependency order. + */ +struct drm_ethosu_submit { + /** Input: Pointer to an array of struct drm_ethosu_job. */ + __u64 jobs; + + /** Input: Number of jobs passed in. */ + __u32 job_count; + + /** Reserved, must be zero. */ + __u32 pad; +}; + +/** + * DRM_IOCTL_ETHOSU() - Build a ethosu IOCTL number + * @__access: Access type. Must be R, W or RW. + * @__id: One of the DRM_ETHOSU_xxx id. + * @__type: Suffix of the type being passed to the IOCTL. + * + * Don't use this macro directly, use the DRM_IOCTL_ETHOSU_xxx + * values instead. + * + * Return: An IOCTL number to be passed to ioctl() from userspace. + */ +#define DRM_IOCTL_ETHOSU(__access, __id, __type) \ + DRM_IO ## __access(DRM_COMMAND_BASE + DRM_ETHOSU_ ## __id, \ + struct drm_ethosu_ ## __type) + +enum { + DRM_IOCTL_ETHOSU_DEV_QUERY = + DRM_IOCTL_ETHOSU(WR, DEV_QUERY, dev_query), + DRM_IOCTL_ETHOSU_BO_CREATE = + DRM_IOCTL_ETHOSU(WR, BO_CREATE, bo_create), + DRM_IOCTL_ETHOSU_BO_WAIT = + DRM_IOCTL_ETHOSU(WR, BO_WAIT, bo_wait), + DRM_IOCTL_ETHOSU_BO_MMAP_OFFSET = + DRM_IOCTL_ETHOSU(WR, BO_MMAP_OFFSET, bo_mmap_offset), + DRM_IOCTL_ETHOSU_CMDSTREAM_BO_CREATE = + DRM_IOCTL_ETHOSU(WR, CMDSTREAM_BO_CREATE, cmdstream_bo_create), + DRM_IOCTL_ETHOSU_SUBMIT = + DRM_IOCTL_ETHOSU(WR, SUBMIT, submit), +}; + +#if defined(__cplusplus) +} +#endif + +#endif /* _ETHOSU_DRM_H_ */ -- cgit From 9837f9fcb7eb3f62a49c988c41e2bdadd86de4e2 Mon Sep 17 00:00:00 2001 From: Thomas Zimmermann Date: Fri, 17 Oct 2025 11:19:02 +0200 Subject: drm/gem-atomic: Reset plane state to NULL if allocation failed Unconditionally reset plane->state to NULL if the allocation of the shadow plane state fails. Avoids an invalid address in the field. Signed-off-by: Thomas Zimmermann Reviewed-by: Javier Martinez Canillas Link: https://patch.msgid.link/20251017091919.58770-1-tzimmermann@suse.de --- drivers/gpu/drm/drm_gem_atomic_helper.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/drivers/gpu/drm/drm_gem_atomic_helper.c b/drivers/gpu/drm/drm_gem_atomic_helper.c index ebf305fb24f0..cbb029cc656a 100644 --- a/drivers/gpu/drm/drm_gem_atomic_helper.c +++ b/drivers/gpu/drm/drm_gem_atomic_helper.c @@ -334,8 +334,6 @@ void drm_gem_reset_shadow_plane(struct drm_plane *plane) } shadow_plane_state = kzalloc(sizeof(*shadow_plane_state), GFP_KERNEL); - if (!shadow_plane_state) - return; __drm_gem_reset_shadow_plane(plane, shadow_plane_state); } EXPORT_SYMBOL(drm_gem_reset_shadow_plane); -- cgit From 953086424aa6632c2e2ce5f357f86872fe90c41d Mon Sep 17 00:00:00 2001 From: Philipp Stanner Date: Fri, 24 Oct 2025 10:15:00 +0200 Subject: MAINTAINERS: Maintain spsc_queue through drm_sched Back in the day a specialized lockless queue was designed solely for the DRM GPU Scheduler: spsc_queue. This queue's only user is drm_sched, and there is no dedicated maintainer entry for the queue. Add the spsc_queue header to the DRM GPU Scheduler MAINTAINERS' section. Acked-by: Simona Vetter Signed-off-by: Philipp Stanner Link: https://patch.msgid.link/20251024081459.164634-2-phasta@kernel.org --- MAINTAINERS | 1 + 1 file changed, 1 insertion(+) diff --git a/MAINTAINERS b/MAINTAINERS index 874fcbe59990..1083598bb2b6 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -8589,6 +8589,7 @@ S: Supported T: git https://gitlab.freedesktop.org/drm/misc/kernel.git F: drivers/gpu/drm/scheduler/ F: include/drm/gpu_scheduler.h +F: include/drm/spsc_queue.h DRM GPUVM M: Danilo Krummrich -- cgit From 18ff1dc462ef6dacba76ea9cb9a4fadb385d6ec4 Mon Sep 17 00:00:00 2001 From: Marek Vasut Date: Wed, 22 Oct 2025 05:37:55 +0200 Subject: dt-bindings: gpu: img,powervr-rogue: Document GX6250 GPU in Renesas R-Car M3-W/M3-W+ Document Imagination Technologies PowerVR Rogue GX6250 BNVC 4.45.2.58 present in Renesas R-Car R8A77960 M3-W and R8A77961 M3-W+ SoC. Acked-by: Conor Dooley Signed-off-by: Marek Vasut Reviewed-by: Geert Uytterhoeven Reviewed-by: Matt Coster Link: https://patch.msgid.link/20251022033847.471106-1-marek.vasut+renesas@mailbox.org Signed-off-by: Matt Coster --- .../devicetree/bindings/gpu/img,powervr-rogue.yaml | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-) diff --git a/Documentation/devicetree/bindings/gpu/img,powervr-rogue.yaml b/Documentation/devicetree/bindings/gpu/img,powervr-rogue.yaml index 829febd8e0f4..aa8b2069cc24 100644 --- a/Documentation/devicetree/bindings/gpu/img,powervr-rogue.yaml +++ b/Documentation/devicetree/bindings/gpu/img,powervr-rogue.yaml @@ -13,6 +13,12 @@ maintainers: properties: compatible: oneOf: + - items: + - enum: + - renesas,r8a7796-gpu + - renesas,r8a77961-gpu + - const: img,img-gx6250 + - const: img,img-rogue - items: - enum: - ti,am62-gpu @@ -94,11 +100,14 @@ allOf: clocks: maxItems: 1 + - if: properties: compatible: contains: - const: thead,th1520-gpu + enum: + - img,img-gx6250 + - thead,th1520-gpu then: properties: clocks: @@ -125,7 +134,9 @@ allOf: properties: compatible: contains: - const: img,img-bxs-4-64 + enum: + - img,img-gx6250 + - img,img-bxs-4-64 then: properties: power-domains: -- cgit From 575c9314ea533d900b5460281feb58c09a5d7323 Mon Sep 17 00:00:00 2001 From: Youssef Samir Date: Fri, 17 Oct 2025 19:34:32 +0200 Subject: accel/qaic: Update the sahara image table for AIC200 Update the Sahara image table for the AIC200 to add entries for: - qupv3fw.elf at id 54 - xbl_config.elf at id 38 - tz_qti_config.mbn at id 76 And move pvs.bin to id 78 to avoid firmware conflict. Co-developed-by: Zack McKevitt Signed-off-by: Zack McKevitt Co-developed-by: Aswin Venkatesan Signed-off-by: Aswin Venkatesan Signed-off-by: Youssef Samir Signed-off-by: Youssef Samir Reviewed-by: Karol Wachowski Reviewed-by: Jeff Hugo Signed-off-by: Jeff Hugo Link: https://patch.msgid.link/20251017173432.1207656-1-youssef.abdulrahman@oss.qualcomm.com --- drivers/accel/qaic/sahara.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/accel/qaic/sahara.c b/drivers/accel/qaic/sahara.c index d5d16cd0d50d..fd3c3b2d1fd3 100644 --- a/drivers/accel/qaic/sahara.c +++ b/drivers/accel/qaic/sahara.c @@ -198,6 +198,7 @@ static const char * const aic200_image_table[] = { [23] = "qcom/aic200/aop.mbn", [32] = "qcom/aic200/tz.mbn", [33] = "qcom/aic200/hypvm.mbn", + [38] = "qcom/aic200/xbl_config.elf", [39] = "qcom/aic200/aic200_abl.elf", [40] = "qcom/aic200/apdp.mbn", [41] = "qcom/aic200/devcfg.mbn", @@ -206,6 +207,7 @@ static const char * const aic200_image_table[] = { [49] = "qcom/aic200/shrm.elf", [50] = "qcom/aic200/cpucp.elf", [51] = "qcom/aic200/aop_devcfg.mbn", + [54] = "qcom/aic200/qupv3fw.elf", [57] = "qcom/aic200/cpucp_dtbs.elf", [62] = "qcom/aic200/uefi_dtbs.elf", [63] = "qcom/aic200/xbl_ac_config.mbn", @@ -217,7 +219,8 @@ static const char * const aic200_image_table[] = { [69] = "qcom/aic200/dcd.mbn", [73] = "qcom/aic200/gearvm.mbn", [74] = "qcom/aic200/sti.bin", - [75] = "qcom/aic200/pvs.bin", + [76] = "qcom/aic200/tz_qti_config.mbn", + [78] = "qcom/aic200/pvs.bin", }; static bool is_streaming(struct sahara_context *context) -- cgit From b3ba217d4f52974236bea9a52a4debaba3b061cc Mon Sep 17 00:00:00 2001 From: Aswin Venkatesan Date: Wed, 22 Oct 2025 14:41:07 +0200 Subject: accel/qaic: Fix comment Replace the word "Qranium" with "qaic" in the function parameter description. Signed-off-by: Aswin Venkatesan Signed-off-by: Youssef Samir Reviewed-by: Carl Vanderlip Reviewed-by: Jeff Hugo [jhugo: adjust word wrapping in commit text] Signed-off-by: Jeff Hugo Link: https://patch.msgid.link/20251022124107.3712466-1-youssef.abdulrahman@oss.qualcomm.com --- drivers/accel/qaic/qaic_data.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/accel/qaic/qaic_data.c b/drivers/accel/qaic/qaic_data.c index 703ef0ce9da1..fa723a2bdfa9 100644 --- a/drivers/accel/qaic/qaic_data.c +++ b/drivers/accel/qaic/qaic_data.c @@ -1959,7 +1959,7 @@ int disable_dbc(struct qaic_device *qdev, u32 dbc_id, struct qaic_user *usr) * enable_dbc - Enable the DBC. DBCs are disabled by removing the context of * user. Add user context back to DBC to enable it. This function trusts the * DBC ID passed and expects the DBC to be disabled. - * @qdev: Qranium device handle + * @qdev: qaic device handle * @dbc_id: ID of the DBC * @usr: User context */ -- cgit From a80c98b6f0d900f820ea9c76c367348804c1e895 Mon Sep 17 00:00:00 2001 From: Troy Hanson Date: Wed, 22 Oct 2025 16:16:06 +0200 Subject: accel/qaic: Rename constant for clarity QAIC_MANAGE_EXT_MSG_LENGTH is ambiguous and has been confused with QAIC_MANAGE_MAX_MSG_LENGTH. Rename it to clarify it's a wire length. Signed-off-by: Troy Hanson Signed-off-by: Youssef Samir Reviewed-by: Carl Vanderlip Reviewed-by: Jeff Hugo [jhugo: capitalize subject] Signed-off-by: Jeff Hugo Link: https://patch.msgid.link/20251022141606.3740470-1-youssef.abdulrahman@oss.qualcomm.com --- drivers/accel/qaic/qaic_control.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/drivers/accel/qaic/qaic_control.c b/drivers/accel/qaic/qaic_control.c index 9af8333db513..49b6e75ef82a 100644 --- a/drivers/accel/qaic/qaic_control.c +++ b/drivers/accel/qaic/qaic_control.c @@ -31,7 +31,7 @@ #define MANAGE_MAGIC_NUMBER ((__force __le32)0x43494151) /* "QAIC" in little endian */ #define QAIC_DBC_Q_GAP SZ_256 #define QAIC_DBC_Q_BUF_ALIGN SZ_4K -#define QAIC_MANAGE_EXT_MSG_LENGTH SZ_64K /* Max DMA message length */ +#define QAIC_MANAGE_WIRE_MSG_LENGTH SZ_64K /* Max DMA message length */ #define QAIC_WRAPPER_MAX_SIZE SZ_4K #define QAIC_MHI_RETRY_WAIT_MS 100 #define QAIC_MHI_RETRY_MAX 20 @@ -368,7 +368,7 @@ static int encode_passthrough(struct qaic_device *qdev, void *trans, struct wrap if (in_trans->hdr.len % 8 != 0) return -EINVAL; - if (size_add(msg_hdr_len, in_trans->hdr.len) > QAIC_MANAGE_EXT_MSG_LENGTH) + if (size_add(msg_hdr_len, in_trans->hdr.len) > QAIC_MANAGE_WIRE_MSG_LENGTH) return -ENOSPC; trans_wrapper = add_wrapper(wrappers, @@ -496,7 +496,7 @@ static int encode_addr_size_pairs(struct dma_xfer *xfer, struct wrapper_list *wr nents = sgt->nents; nents_dma = nents; - *size = QAIC_MANAGE_EXT_MSG_LENGTH - msg_hdr_len - sizeof(**out_trans); + *size = QAIC_MANAGE_WIRE_MSG_LENGTH - msg_hdr_len - sizeof(**out_trans); for_each_sgtable_dma_sg(sgt, sg, i) { *size -= sizeof(*asp); /* Save 1K for possible follow-up transactions. */ @@ -577,7 +577,7 @@ static int encode_dma(struct qaic_device *qdev, void *trans, struct wrapper_list /* There should be enough space to hold at least one ASP entry. */ if (size_add(msg_hdr_len, sizeof(*out_trans) + sizeof(struct wire_addr_size_pair)) > - QAIC_MANAGE_EXT_MSG_LENGTH) + QAIC_MANAGE_WIRE_MSG_LENGTH) return -ENOMEM; xfer = kmalloc(sizeof(*xfer), GFP_KERNEL); @@ -646,7 +646,7 @@ static int encode_activate(struct qaic_device *qdev, void *trans, struct wrapper msg = &wrapper->msg; msg_hdr_len = le32_to_cpu(msg->hdr.len); - if (size_add(msg_hdr_len, sizeof(*out_trans)) > QAIC_MANAGE_MAX_MSG_LENGTH) + if (size_add(msg_hdr_len, sizeof(*out_trans)) > QAIC_MANAGE_WIRE_MSG_LENGTH) return -ENOSPC; if (!in_trans->queue_size) @@ -731,7 +731,7 @@ static int encode_status(struct qaic_device *qdev, void *trans, struct wrapper_l msg = &wrapper->msg; msg_hdr_len = le32_to_cpu(msg->hdr.len); - if (size_add(msg_hdr_len, in_trans->hdr.len) > QAIC_MANAGE_MAX_MSG_LENGTH) + if (size_add(msg_hdr_len, in_trans->hdr.len) > QAIC_MANAGE_WIRE_MSG_LENGTH) return -ENOSPC; trans_wrapper = add_wrapper(wrappers, sizeof(*trans_wrapper)); @@ -1054,7 +1054,7 @@ static void *msg_xfer(struct qaic_device *qdev, struct wrapper_list *wrappers, u init_completion(&elem.xfer_done); if (likely(!qdev->cntl_lost_buf)) { /* - * The max size of request to device is QAIC_MANAGE_EXT_MSG_LENGTH. + * The max size of request to device is QAIC_MANAGE_WIRE_MSG_LENGTH. * The max size of response from device is QAIC_MANAGE_MAX_MSG_LENGTH. */ out_buf = kmalloc(QAIC_MANAGE_MAX_MSG_LENGTH, GFP_KERNEL); -- cgit From 4f9ffd2c80a2fa09dcc8dfa0482cb7e0fb6fcf6c Mon Sep 17 00:00:00 2001 From: Icenowy Zheng Date: Mon, 20 Oct 2025 13:35:23 +0800 Subject: drm/ttm: add pgprot handling for RISC-V MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The RISC-V Svpbmt privileged extension provides support for overriding page memory coherency attributes, and, along with vendor extensions like Xtheadmae, supports pgprot_{writecombine,noncached} on RISC-V. Adapt the codepath that maps ttm_write_combined to pgprot_writecombine and ttm_noncached to pgprot_noncached to RISC-V, to allow proper page access attributes. Signed-off-by: Icenowy Zheng Tested-by: Han Gao Acked-by: Christian König Signed-off-by: Christian König Link: https://lore.kernel.org/r/20251020053523.731353-1-uwu@icenowy.me --- drivers/gpu/drm/ttm/ttm_module.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/ttm/ttm_module.c b/drivers/gpu/drm/ttm/ttm_module.c index b3fffe7b5062..aa137ead5cc5 100644 --- a/drivers/gpu/drm/ttm/ttm_module.c +++ b/drivers/gpu/drm/ttm/ttm_module.c @@ -74,7 +74,8 @@ pgprot_t ttm_prot_from_caching(enum ttm_caching caching, pgprot_t tmp) #endif /* CONFIG_UML */ #endif /* __i386__ || __x86_64__ */ #if defined(__ia64__) || defined(__arm__) || defined(__aarch64__) || \ - defined(__powerpc__) || defined(__mips__) || defined(__loongarch__) + defined(__powerpc__) || defined(__mips__) || defined(__loongarch__) || \ + defined(__riscv) if (caching == ttm_write_combined) tmp = pgprot_writecombine(tmp); else -- cgit