From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0D4E0C64EC7 for ; Tue, 7 Feb 2023 07:50:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230460AbjBGHuG (ORCPT ); Tue, 7 Feb 2023 02:50:06 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34198 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229625AbjBGHuE (ORCPT ); Tue, 7 Feb 2023 02:50:04 -0500 Received: from linux.microsoft.com (linux.microsoft.com [13.77.154.182]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 54E3B12847; Mon, 6 Feb 2023 23:50:03 -0800 (PST) Received: from linuxonhyperv3.guj3yctzbm1etfxqx2vob5hsef.xx.internal.cloudapp.net (linux.microsoft.com [13.77.154.182]) by linux.microsoft.com (Postfix) with ESMTPSA id B822420C7E28; Mon, 6 Feb 2023 23:50:02 -0800 (PST) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com B822420C7E28 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1675756202; bh=mf6bBpSzSp5FvIZlbgZNiPFVdnfQ6pILfRC3PQopagc=; h=From:To:Subject:Date:From; b=MQWnrOafvpvN/YE8jA0A4/NMv0Ma8eqAj/Gv6A5D4Il2aBi9HAX2/wtRVlJ3inGes QWwt2icKXn8zhkmdfZjs+dSTr/zL+K8QTeWyXImorKt3jnqt0nRbw+Bf4VCd5dqTzk K8cCKOpP+k9kFX0fSKEgxICK1CNHuWJFiAXZsbfs= From: Saurabh Sengar To: robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, kys@microsoft.com, haiyangz@microsoft.com, wei.liu@kernel.org, decui@microsoft.com, daniel.lezcano@linaro.org, tglx@linutronix.de, virtualization@lists.linux-foundation.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-hyperv@vger.kernel.org, mikelley@microsoft.com, ssengar@microsoft.com, dphadke@linux.microsoft.com Subject: [PATCH v4 0/6] Device tree support for Hyper-V VMBus driver Date: Mon, 6 Feb 2023 23:49:53 -0800 Message-Id: <1675756199-5917-1-git-send-email-ssengar@linux.microsoft.com> X-Mailer: git-send-email 1.8.3.1 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This set of patches expands the VMBus driver to include device tree support. This feature allows for a kernel boot without the use of ACPI tables, resulting in a smaller memory footprint and potentially faster boot times. This is tested by enabling CONFIG_FLAT and OF_EARLY_FLATTREE for x86. The first two patches enable compilation of Hyper-V APIs in a non-ACPI build. The third patch converts the VMBus driver from acpi to more generic platform driver. Further to add device tree documentation for VMBus, it needs to club with other virtualization driver's documentation. For this rename the virtio folder to more generic hypervisor, so that all the hypervisor based devices can co-exist in a single place in device tree documentation. The fourth patch does this renaming. The fifth patch introduces the device tree documentation for VMBus. The sixth patch adds device tree support to the VMBus driver. Currently this is tested only for x86 and it may not work for other archs. [V4] - rebased which fixed return type of 'vmbus_mmio_remove' from int to void - used __maybe_unused for 'vmbus_of_match' and safeguard vmbus_acpi_device_ids under #ifdef [V3] - Changed the logic to use generic api (for_each_of_range) for parsing "ranges". - Remove dependency of ACPI for HYPERV in case of x86. - Removed "device tree bindings" from title and patch subject. - Removed duplicate vendor prefix, used microsoft instead of msft. - Use 'soc' in example of device tree documantation for parent node. - Fixed compatible schemas error generated in other modules referring to virtio. - Drop hex notation and leading zeros from device tree cell properties. - Added missing full stop at the end of commit message. - Typos fix: s/Initaly/Initially/ and s/hibernate/hibernation/. - Replace to_acpi_device with ACPI_COMPANION which simplify the logic. - Added more info in cover letter aboutsystem under test. [v2] - Convert VMBus acpi device to platform device, and added device tree support in separate patch. This enables using same driver structure for both the flows. - In Device tree documentation, changed virtio folder to hypervisor and moved VMBus documentation there. - Moved bindings before Device tree patch. - Removed stale ".data" and ".name" field from of_device match table. - Removed debug print. Saurabh Sengar (6): drivers/clocksource/hyper-v: non ACPI support in hyperv clock Drivers: hv: allow non ACPI compilation for hv_is_hibernation_supported Drivers: hv: vmbus: Convert acpi_device to more generic platform_device dt-bindings: hypervisor: Rename virtio to hypervisor dt-bindings: hypervisor: VMBus Driver: VMBus: Add device tree support .../devicetree/bindings/gpio/gpio-virtio.yaml | 4 +- .../bindings/hypervisor/microsoft,vmbus.yaml | 48 +++++++++ .../bindings/{virtio => hypervisor}/mmio.yaml | 2 +- .../bindings/{virtio => hypervisor}/pci-iommu.yaml | 2 +- .../{virtio => hypervisor}/virtio-device.yaml | 2 +- .../devicetree/bindings/i2c/i2c-virtio.yaml | 4 +- MAINTAINERS | 3 +- drivers/clocksource/hyperv_timer.c | 15 ++- drivers/hv/Kconfig | 4 +- drivers/hv/hv_common.c | 4 + drivers/hv/vmbus_drv.c | 120 ++++++++++++++++----- 11 files changed, 171 insertions(+), 37 deletions(-) create mode 100644 Documentation/devicetree/bindings/hypervisor/microsoft,vmbus.yaml rename Documentation/devicetree/bindings/{virtio => hypervisor}/mmio.yaml (95%) rename Documentation/devicetree/bindings/{virtio => hypervisor}/pci-iommu.yaml (98%) rename Documentation/devicetree/bindings/{virtio => hypervisor}/virtio-device.yaml (93%) -- 1.8.3.1