From: Elliot Berman <quic_eberman@quicinc.com> To: Bjorn Andersson <quic_bjorande@quicinc.com>, Jonathan Corbet <corbet@lwn.net>, Elliot Berman <quic_eberman@quicinc.com>, Murali Nalajala <quic_mnalajal@quicinc.com> Cc: Trilok Soni <quic_tsoni@quicinc.com>, Srivatsa Vaddagiri <quic_svaddagi@quicinc.com>, Carl van Schaik <quic_cvanscha@quicinc.com>, Prakruthi Deepak Heragu <quic_pheragu@quicinc.com>, Arnd Bergmann <arnd@arndb.de>, Greg Kroah-Hartman <gregkh@linuxfoundation.org>, Rob Herring <robh+dt@kernel.org>, Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>, Catalin Marinas <catalin.marinas@arm.com>, Will Deacon <will@kernel.org>, Jassi Brar <jassisinghbrar@gmail.com>, Sudeep Holla <sudeep.holla@arm.com>, Mark Rutland <mark.rutland@arm.com>, Lorenzo Pieralisi <lpieralisi@kernel.org>, <linux-arm-msm@vger.kernel.org>, <devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>, <linux-doc@vger.kernel.org>, <linux-arm-kernel@lists.infradead.org>, <linux-acpi@vger.kernel.org> Subject: [PATCH v7 12/20] gunyah: vm_mgr: Introduce basic VM Manager Date: Mon, 21 Nov 2022 06:00:01 -0800 [thread overview] Message-ID: <20221121140009.2353512-13-quic_eberman@quicinc.com> (raw) In-Reply-To: <20221121140009.2353512-1-quic_eberman@quicinc.com> Gunyah VM manager is a kernel moduel which exposes an interface to Gunyah userspace to load, run, and interact with other Gunyah virtual machines. The interface is a character device at /dev/gunyah. Add a basic VM manager driver. Upcoming patches will add more ioctls into this driver. Co-developed-by: Prakruthi Deepak Heragu <quic_pheragu@quicinc.com> Signed-off-by: Prakruthi Deepak Heragu <quic_pheragu@quicinc.com> Signed-off-by: Elliot Berman <quic_eberman@quicinc.com> --- .../userspace-api/ioctl/ioctl-number.rst | 1 + drivers/virt/gunyah/Kconfig | 10 ++ drivers/virt/gunyah/Makefile | 3 + drivers/virt/gunyah/gunyah_rsc_mgr.c | 32 +++- drivers/virt/gunyah/vm_mgr.c | 155 ++++++++++++++++++ drivers/virt/gunyah/vm_mgr.h | 31 ++++ include/uapi/linux/gunyah.h | 23 +++ 7 files changed, 249 insertions(+), 6 deletions(-) create mode 100644 drivers/virt/gunyah/vm_mgr.c create mode 100644 drivers/virt/gunyah/vm_mgr.h create mode 100644 include/uapi/linux/gunyah.h diff --git a/Documentation/userspace-api/ioctl/ioctl-number.rst b/Documentation/userspace-api/ioctl/ioctl-number.rst index 5f81e2a24a5c..81456c34c85d 100644 --- a/Documentation/userspace-api/ioctl/ioctl-number.rst +++ b/Documentation/userspace-api/ioctl/ioctl-number.rst @@ -136,6 +136,7 @@ Code Seq# Include File Comments 'F' DD video/sstfb.h conflict! 'G' 00-3F drivers/misc/sgi-gru/grulib.h conflict! 'G' 00-0F xen/gntalloc.h, xen/gntdev.h conflict! +'G' 00-0f linux/gunyah.h conflict! 'H' 00-7F linux/hiddev.h conflict! 'H' 00-0F linux/hidraw.h conflict! 'H' 01 linux/mei.h conflict! diff --git a/drivers/virt/gunyah/Kconfig b/drivers/virt/gunyah/Kconfig index 0bb497372d4e..5856b7c5157b 100644 --- a/drivers/virt/gunyah/Kconfig +++ b/drivers/virt/gunyah/Kconfig @@ -16,4 +16,14 @@ config GUNYAH_RESOURCE_MANAGER tristate depends on MAILBOX select GUNYAH_MESSAGE_QUEUES + +config GUNYAH_VM_MANAGER + tristate "Gunyah VM Manager" + depends on MAILBOX + select GUNYAH_RESOURCE_MANAGER + help + Gunyah VM manager is a kernel module which exposes an interface to + Gunyah userspace to load, run, and interact with other Gunyah + virtual machines. This module is required to launch other virtual + machines. endif diff --git a/drivers/virt/gunyah/Makefile b/drivers/virt/gunyah/Makefile index b62ac4045621..ae628424719b 100644 --- a/drivers/virt/gunyah/Makefile +++ b/drivers/virt/gunyah/Makefile @@ -1,3 +1,6 @@ obj-$(CONFIG_GUNYAH) += gunyah.o obj-$(CONFIG_GUNYAH_RESOURCE_MANAGER) += gunyah_rsc_mgr.o gunyah_rm_rpc.o + +gunyah_vm_mgr-y += vm_mgr.o +obj-$(CONFIG_GUNYAH_VM_MANAGER) += gunyah_vm_mgr.o diff --git a/drivers/virt/gunyah/gunyah_rsc_mgr.c b/drivers/virt/gunyah/gunyah_rsc_mgr.c index 2fae62bbfe49..47cf107ce894 100644 --- a/drivers/virt/gunyah/gunyah_rsc_mgr.c +++ b/drivers/virt/gunyah/gunyah_rsc_mgr.c @@ -7,25 +7,45 @@ #include <linux/platform_device.h> #include "rsc_mgr.h" +#include "vm_mgr.h" + +struct gh_rsc_mgr { + struct gh_rm_rpc *rpc; + struct gh_vm_mgr *vm_mgr; +}; static int gh_rm_drv_probe(struct platform_device *pdev) { - struct gh_rm_rpc *rsc_mgr; + struct gh_rsc_mgr *rsc_mgr; - rsc_mgr = gh_rm_rpc_init(pdev); - if (IS_ERR(rsc_mgr)) - return PTR_ERR(rsc_mgr); + rsc_mgr = devm_kzalloc(&pdev->dev, sizeof(*rsc_mgr), GFP_KERNEL); + if (!rsc_mgr) + return -ENOMEM; platform_set_drvdata(pdev, rsc_mgr); + rsc_mgr->rpc = gh_rm_rpc_init(pdev); + if (IS_ERR(rsc_mgr->rpc)) + return PTR_ERR(rsc_mgr->rpc); + + rsc_mgr->vm_mgr = gh_vm_mgr_init(&pdev->dev, rsc_mgr->rpc); + if (IS_ERR(rsc_mgr->vm_mgr)) { + dev_warn(&pdev->dev, "Failed to initialize vm manager: %ld\n", + PTR_ERR(rsc_mgr->vm_mgr)); + rsc_mgr->vm_mgr = NULL; + } + return 0; } static int gh_rm_drv_remove(struct platform_device *pdev) { - struct gh_rm_rpc *rsc_mgr = platform_get_drvdata(pdev); + struct gh_rsc_mgr *rsc_mgr = platform_get_drvdata(pdev); + + if (rsc_mgr->vm_mgr) + gh_vm_mgr_remove(rsc_mgr->vm_mgr); - gh_rm_rpc_remove(rsc_mgr); + gh_rm_rpc_remove(rsc_mgr->rpc); return 0; } diff --git a/drivers/virt/gunyah/vm_mgr.c b/drivers/virt/gunyah/vm_mgr.c new file mode 100644 index 000000000000..deb8e0bf4a4d --- /dev/null +++ b/drivers/virt/gunyah/vm_mgr.c @@ -0,0 +1,155 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved. + */ + +#define pr_fmt(fmt) "gh_vm_mgr: " fmt + +#include <linux/anon_inodes.h> +#include <linux/file.h> +#include <linux/gunyah_rsc_mgr.h> +#include <linux/miscdevice.h> +#include <linux/module.h> + +#include <uapi/linux/gunyah.h> + +#include "vm_mgr.h" + +static __must_check struct gunyah_vm *gunyah_vm_alloc(struct gh_vm_mgr *vm_mgr) +{ + struct gunyah_vm *ghvm; + int ret; + + ret = gh_rm_alloc_vmid(vm_mgr->rm, 0); + if (ret < 0) + return ERR_PTR(ret); + + ghvm = kzalloc(sizeof(*ghvm), GFP_KERNEL); + if (!ghvm) + return ghvm; + + ghvm->vmid = ret; + + return ghvm; +} + +static long gh_vm_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) +{ + long r; + + switch (cmd) { + default: + r = -ENOTTY; + break; + } + + return r; +} + +static int gh_vm_release(struct inode *inode, struct file *filp) +{ + struct gunyah_vm *ghvm = filp->private_data; + + kfree(ghvm); + return 0; +} + +static const struct file_operations gh_vm_fops = { + .unlocked_ioctl = gh_vm_ioctl, + .release = gh_vm_release, + .compat_ioctl = compat_ptr_ioctl, + .llseek = noop_llseek, +}; + +static long gh_dev_ioctl_create_vm(struct gh_vm_mgr *vm_mgr, unsigned long arg) +{ + struct gunyah_vm *ghvm; + struct file *file; + int fd, err; + + /* arg reserved for future use. */ + if (arg) + return -EINVAL; + + ghvm = gunyah_vm_alloc(vm_mgr); + if (IS_ERR_OR_NULL(ghvm)) + return PTR_ERR(ghvm) ? : -ENOMEM; + + fd = get_unused_fd_flags(O_CLOEXEC); + if (fd < 0) { + err = fd; + goto err_destroy_vm; + } + + file = anon_inode_getfile("gunyah-vm", &gh_vm_fops, ghvm, O_RDWR); + if (IS_ERR(file)) { + err = PTR_ERR(file); + goto err_put_fd; + } + + fd_install(fd, file); + + return fd; + +err_put_fd: + put_unused_fd(fd); +err_destroy_vm: + kfree(ghvm); + return err; +} + +static long gh_dev_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) +{ + struct miscdevice *miscdev = filp->private_data; + struct gh_vm_mgr *vm_mgr = container_of(miscdev, struct gh_vm_mgr, miscdev); + + switch (cmd) { + case GH_CREATE_VM: + return gh_dev_ioctl_create_vm(vm_mgr, arg); + default: + return -EINVAL; + } +} + +static const struct file_operations gh_dev_fops = { + .owner = THIS_MODULE, + .unlocked_ioctl = gh_dev_ioctl, + .compat_ioctl = compat_ptr_ioctl, + .llseek = noop_llseek, +}; + +struct gh_vm_mgr *gh_vm_mgr_init(struct device *dev, struct gh_rm_rpc *rm) +{ + struct gh_vm_mgr *vm_mgr; + int ret; + + vm_mgr = kzalloc(sizeof(*vm_mgr), GFP_KERNEL); + if (!vm_mgr) + return ERR_PTR(-ENOMEM); + + vm_mgr->dev = dev; + vm_mgr->rm = rm; + vm_mgr->miscdev.name = "gunyah"; + vm_mgr->miscdev.minor = MISC_DYNAMIC_MINOR; + vm_mgr->miscdev.fops = &gh_dev_fops; + + ret = misc_register(&vm_mgr->miscdev); + if (ret) { + kfree(vm_mgr); + return ERR_PTR(ret); + } + + return vm_mgr; +} +EXPORT_SYMBOL_GPL(gh_vm_mgr_init); + +void gh_vm_mgr_remove(struct gh_vm_mgr *vm_mgr) +{ + misc_deregister(&vm_mgr->miscdev); + kfree(vm_mgr); +} +EXPORT_SYMBOL_GPL(gh_vm_mgr_remove); + +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("Gunyah VM Manager"); + diff --git a/drivers/virt/gunyah/vm_mgr.h b/drivers/virt/gunyah/vm_mgr.h new file mode 100644 index 000000000000..9e9dfb1c0268 --- /dev/null +++ b/drivers/virt/gunyah/vm_mgr.h @@ -0,0 +1,31 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved. + */ + +#ifndef _GH_PRIV_VM_MGR_H +#define _GH_PRIV_VM_MGR_H + +#include <linux/gunyah_rsc_mgr.h> + +#include <uapi/linux/gunyah.h> + +struct gh_vm_mgr { + struct device *dev; + struct gh_rm_rpc *rm; + struct miscdevice miscdev; +}; + +#if IS_ENABLED(CONFIG_GUNYAH_VM_MANAGER) +struct gh_vm_mgr *gh_vm_mgr_init(struct device *dev, struct gh_rm_rpc *rm); +void gh_vm_mgr_remove(struct gh_vm_mgr *vm_mgr); +#else +static inline struct gh_vm_mgr *gh_vm_mgr_init(struct gh_rm_rpc *rm) { return NULL; } +static inline void gh_vm_mgr_remove(struct gh_vm_mgr *vm_mgr) { } +#endif + +struct gunyah_vm { + u16 vmid; +}; + +#endif diff --git a/include/uapi/linux/gunyah.h b/include/uapi/linux/gunyah.h new file mode 100644 index 000000000000..88a40d6e0b96 --- /dev/null +++ b/include/uapi/linux/gunyah.h @@ -0,0 +1,23 @@ +/* SPDX-License-Identifier: GPL-2.0-only WITH Linux-syscall-note */ +/* + * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved. + */ + +#ifndef _UAPI_LINUX_GUNYAH +#define _UAPI_LINUX_GUNYAH + +/* + * Userspace interface for /dev/gunyah - gunyah based virtual machine + */ + +#include <linux/types.h> +#include <linux/ioctl.h> + +#define GH_IOCTL_TYPE 'G' + +/* + * ioctls for /dev/gunyah fds: + */ +#define GH_CREATE_VM _IO(GH_IOCTL_TYPE, 0x0) /* Returns a Gunyah VM fd */ + +#endif -- 2.25.1
WARNING: multiple messages have this Message-ID (diff)
From: Elliot Berman <quic_eberman@quicinc.com> To: Bjorn Andersson <quic_bjorande@quicinc.com>, Jonathan Corbet <corbet@lwn.net>, Elliot Berman <quic_eberman@quicinc.com>, Murali Nalajala <quic_mnalajal@quicinc.com> Cc: Trilok Soni <quic_tsoni@quicinc.com>, Srivatsa Vaddagiri <quic_svaddagi@quicinc.com>, Carl van Schaik <quic_cvanscha@quicinc.com>, Prakruthi Deepak Heragu <quic_pheragu@quicinc.com>, Arnd Bergmann <arnd@arndb.de>, Greg Kroah-Hartman <gregkh@linuxfoundation.org>, Rob Herring <robh+dt@kernel.org>, Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>, Catalin Marinas <catalin.marinas@arm.com>, Will Deacon <will@kernel.org>, Jassi Brar <jassisinghbrar@gmail.com>, Sudeep Holla <sudeep.holla@arm.com>, Mark Rutland <mark.rutland@arm.com>, Lorenzo Pieralisi <lpieralisi@kernel.org>, <linux-arm-msm@vger.kernel.org>, <devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>, <linux-doc@vger.kernel.org>, <linux-arm-kernel@lists.infradead.org>, <linux-acpi@vger.kernel.org> Subject: [PATCH v7 12/20] gunyah: vm_mgr: Introduce basic VM Manager Date: Mon, 21 Nov 2022 06:00:01 -0800 [thread overview] Message-ID: <20221121140009.2353512-13-quic_eberman@quicinc.com> (raw) In-Reply-To: <20221121140009.2353512-1-quic_eberman@quicinc.com> Gunyah VM manager is a kernel moduel which exposes an interface to Gunyah userspace to load, run, and interact with other Gunyah virtual machines. The interface is a character device at /dev/gunyah. Add a basic VM manager driver. Upcoming patches will add more ioctls into this driver. Co-developed-by: Prakruthi Deepak Heragu <quic_pheragu@quicinc.com> Signed-off-by: Prakruthi Deepak Heragu <quic_pheragu@quicinc.com> Signed-off-by: Elliot Berman <quic_eberman@quicinc.com> --- .../userspace-api/ioctl/ioctl-number.rst | 1 + drivers/virt/gunyah/Kconfig | 10 ++ drivers/virt/gunyah/Makefile | 3 + drivers/virt/gunyah/gunyah_rsc_mgr.c | 32 +++- drivers/virt/gunyah/vm_mgr.c | 155 ++++++++++++++++++ drivers/virt/gunyah/vm_mgr.h | 31 ++++ include/uapi/linux/gunyah.h | 23 +++ 7 files changed, 249 insertions(+), 6 deletions(-) create mode 100644 drivers/virt/gunyah/vm_mgr.c create mode 100644 drivers/virt/gunyah/vm_mgr.h create mode 100644 include/uapi/linux/gunyah.h diff --git a/Documentation/userspace-api/ioctl/ioctl-number.rst b/Documentation/userspace-api/ioctl/ioctl-number.rst index 5f81e2a24a5c..81456c34c85d 100644 --- a/Documentation/userspace-api/ioctl/ioctl-number.rst +++ b/Documentation/userspace-api/ioctl/ioctl-number.rst @@ -136,6 +136,7 @@ Code Seq# Include File Comments 'F' DD video/sstfb.h conflict! 'G' 00-3F drivers/misc/sgi-gru/grulib.h conflict! 'G' 00-0F xen/gntalloc.h, xen/gntdev.h conflict! +'G' 00-0f linux/gunyah.h conflict! 'H' 00-7F linux/hiddev.h conflict! 'H' 00-0F linux/hidraw.h conflict! 'H' 01 linux/mei.h conflict! diff --git a/drivers/virt/gunyah/Kconfig b/drivers/virt/gunyah/Kconfig index 0bb497372d4e..5856b7c5157b 100644 --- a/drivers/virt/gunyah/Kconfig +++ b/drivers/virt/gunyah/Kconfig @@ -16,4 +16,14 @@ config GUNYAH_RESOURCE_MANAGER tristate depends on MAILBOX select GUNYAH_MESSAGE_QUEUES + +config GUNYAH_VM_MANAGER + tristate "Gunyah VM Manager" + depends on MAILBOX + select GUNYAH_RESOURCE_MANAGER + help + Gunyah VM manager is a kernel module which exposes an interface to + Gunyah userspace to load, run, and interact with other Gunyah + virtual machines. This module is required to launch other virtual + machines. endif diff --git a/drivers/virt/gunyah/Makefile b/drivers/virt/gunyah/Makefile index b62ac4045621..ae628424719b 100644 --- a/drivers/virt/gunyah/Makefile +++ b/drivers/virt/gunyah/Makefile @@ -1,3 +1,6 @@ obj-$(CONFIG_GUNYAH) += gunyah.o obj-$(CONFIG_GUNYAH_RESOURCE_MANAGER) += gunyah_rsc_mgr.o gunyah_rm_rpc.o + +gunyah_vm_mgr-y += vm_mgr.o +obj-$(CONFIG_GUNYAH_VM_MANAGER) += gunyah_vm_mgr.o diff --git a/drivers/virt/gunyah/gunyah_rsc_mgr.c b/drivers/virt/gunyah/gunyah_rsc_mgr.c index 2fae62bbfe49..47cf107ce894 100644 --- a/drivers/virt/gunyah/gunyah_rsc_mgr.c +++ b/drivers/virt/gunyah/gunyah_rsc_mgr.c @@ -7,25 +7,45 @@ #include <linux/platform_device.h> #include "rsc_mgr.h" +#include "vm_mgr.h" + +struct gh_rsc_mgr { + struct gh_rm_rpc *rpc; + struct gh_vm_mgr *vm_mgr; +}; static int gh_rm_drv_probe(struct platform_device *pdev) { - struct gh_rm_rpc *rsc_mgr; + struct gh_rsc_mgr *rsc_mgr; - rsc_mgr = gh_rm_rpc_init(pdev); - if (IS_ERR(rsc_mgr)) - return PTR_ERR(rsc_mgr); + rsc_mgr = devm_kzalloc(&pdev->dev, sizeof(*rsc_mgr), GFP_KERNEL); + if (!rsc_mgr) + return -ENOMEM; platform_set_drvdata(pdev, rsc_mgr); + rsc_mgr->rpc = gh_rm_rpc_init(pdev); + if (IS_ERR(rsc_mgr->rpc)) + return PTR_ERR(rsc_mgr->rpc); + + rsc_mgr->vm_mgr = gh_vm_mgr_init(&pdev->dev, rsc_mgr->rpc); + if (IS_ERR(rsc_mgr->vm_mgr)) { + dev_warn(&pdev->dev, "Failed to initialize vm manager: %ld\n", + PTR_ERR(rsc_mgr->vm_mgr)); + rsc_mgr->vm_mgr = NULL; + } + return 0; } static int gh_rm_drv_remove(struct platform_device *pdev) { - struct gh_rm_rpc *rsc_mgr = platform_get_drvdata(pdev); + struct gh_rsc_mgr *rsc_mgr = platform_get_drvdata(pdev); + + if (rsc_mgr->vm_mgr) + gh_vm_mgr_remove(rsc_mgr->vm_mgr); - gh_rm_rpc_remove(rsc_mgr); + gh_rm_rpc_remove(rsc_mgr->rpc); return 0; } diff --git a/drivers/virt/gunyah/vm_mgr.c b/drivers/virt/gunyah/vm_mgr.c new file mode 100644 index 000000000000..deb8e0bf4a4d --- /dev/null +++ b/drivers/virt/gunyah/vm_mgr.c @@ -0,0 +1,155 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved. + */ + +#define pr_fmt(fmt) "gh_vm_mgr: " fmt + +#include <linux/anon_inodes.h> +#include <linux/file.h> +#include <linux/gunyah_rsc_mgr.h> +#include <linux/miscdevice.h> +#include <linux/module.h> + +#include <uapi/linux/gunyah.h> + +#include "vm_mgr.h" + +static __must_check struct gunyah_vm *gunyah_vm_alloc(struct gh_vm_mgr *vm_mgr) +{ + struct gunyah_vm *ghvm; + int ret; + + ret = gh_rm_alloc_vmid(vm_mgr->rm, 0); + if (ret < 0) + return ERR_PTR(ret); + + ghvm = kzalloc(sizeof(*ghvm), GFP_KERNEL); + if (!ghvm) + return ghvm; + + ghvm->vmid = ret; + + return ghvm; +} + +static long gh_vm_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) +{ + long r; + + switch (cmd) { + default: + r = -ENOTTY; + break; + } + + return r; +} + +static int gh_vm_release(struct inode *inode, struct file *filp) +{ + struct gunyah_vm *ghvm = filp->private_data; + + kfree(ghvm); + return 0; +} + +static const struct file_operations gh_vm_fops = { + .unlocked_ioctl = gh_vm_ioctl, + .release = gh_vm_release, + .compat_ioctl = compat_ptr_ioctl, + .llseek = noop_llseek, +}; + +static long gh_dev_ioctl_create_vm(struct gh_vm_mgr *vm_mgr, unsigned long arg) +{ + struct gunyah_vm *ghvm; + struct file *file; + int fd, err; + + /* arg reserved for future use. */ + if (arg) + return -EINVAL; + + ghvm = gunyah_vm_alloc(vm_mgr); + if (IS_ERR_OR_NULL(ghvm)) + return PTR_ERR(ghvm) ? : -ENOMEM; + + fd = get_unused_fd_flags(O_CLOEXEC); + if (fd < 0) { + err = fd; + goto err_destroy_vm; + } + + file = anon_inode_getfile("gunyah-vm", &gh_vm_fops, ghvm, O_RDWR); + if (IS_ERR(file)) { + err = PTR_ERR(file); + goto err_put_fd; + } + + fd_install(fd, file); + + return fd; + +err_put_fd: + put_unused_fd(fd); +err_destroy_vm: + kfree(ghvm); + return err; +} + +static long gh_dev_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) +{ + struct miscdevice *miscdev = filp->private_data; + struct gh_vm_mgr *vm_mgr = container_of(miscdev, struct gh_vm_mgr, miscdev); + + switch (cmd) { + case GH_CREATE_VM: + return gh_dev_ioctl_create_vm(vm_mgr, arg); + default: + return -EINVAL; + } +} + +static const struct file_operations gh_dev_fops = { + .owner = THIS_MODULE, + .unlocked_ioctl = gh_dev_ioctl, + .compat_ioctl = compat_ptr_ioctl, + .llseek = noop_llseek, +}; + +struct gh_vm_mgr *gh_vm_mgr_init(struct device *dev, struct gh_rm_rpc *rm) +{ + struct gh_vm_mgr *vm_mgr; + int ret; + + vm_mgr = kzalloc(sizeof(*vm_mgr), GFP_KERNEL); + if (!vm_mgr) + return ERR_PTR(-ENOMEM); + + vm_mgr->dev = dev; + vm_mgr->rm = rm; + vm_mgr->miscdev.name = "gunyah"; + vm_mgr->miscdev.minor = MISC_DYNAMIC_MINOR; + vm_mgr->miscdev.fops = &gh_dev_fops; + + ret = misc_register(&vm_mgr->miscdev); + if (ret) { + kfree(vm_mgr); + return ERR_PTR(ret); + } + + return vm_mgr; +} +EXPORT_SYMBOL_GPL(gh_vm_mgr_init); + +void gh_vm_mgr_remove(struct gh_vm_mgr *vm_mgr) +{ + misc_deregister(&vm_mgr->miscdev); + kfree(vm_mgr); +} +EXPORT_SYMBOL_GPL(gh_vm_mgr_remove); + +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("Gunyah VM Manager"); + diff --git a/drivers/virt/gunyah/vm_mgr.h b/drivers/virt/gunyah/vm_mgr.h new file mode 100644 index 000000000000..9e9dfb1c0268 --- /dev/null +++ b/drivers/virt/gunyah/vm_mgr.h @@ -0,0 +1,31 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved. + */ + +#ifndef _GH_PRIV_VM_MGR_H +#define _GH_PRIV_VM_MGR_H + +#include <linux/gunyah_rsc_mgr.h> + +#include <uapi/linux/gunyah.h> + +struct gh_vm_mgr { + struct device *dev; + struct gh_rm_rpc *rm; + struct miscdevice miscdev; +}; + +#if IS_ENABLED(CONFIG_GUNYAH_VM_MANAGER) +struct gh_vm_mgr *gh_vm_mgr_init(struct device *dev, struct gh_rm_rpc *rm); +void gh_vm_mgr_remove(struct gh_vm_mgr *vm_mgr); +#else +static inline struct gh_vm_mgr *gh_vm_mgr_init(struct gh_rm_rpc *rm) { return NULL; } +static inline void gh_vm_mgr_remove(struct gh_vm_mgr *vm_mgr) { } +#endif + +struct gunyah_vm { + u16 vmid; +}; + +#endif diff --git a/include/uapi/linux/gunyah.h b/include/uapi/linux/gunyah.h new file mode 100644 index 000000000000..88a40d6e0b96 --- /dev/null +++ b/include/uapi/linux/gunyah.h @@ -0,0 +1,23 @@ +/* SPDX-License-Identifier: GPL-2.0-only WITH Linux-syscall-note */ +/* + * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved. + */ + +#ifndef _UAPI_LINUX_GUNYAH +#define _UAPI_LINUX_GUNYAH + +/* + * Userspace interface for /dev/gunyah - gunyah based virtual machine + */ + +#include <linux/types.h> +#include <linux/ioctl.h> + +#define GH_IOCTL_TYPE 'G' + +/* + * ioctls for /dev/gunyah fds: + */ +#define GH_CREATE_VM _IO(GH_IOCTL_TYPE, 0x0) /* Returns a Gunyah VM fd */ + +#endif -- 2.25.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2022-11-21 14:02 UTC|newest] Thread overview: 66+ messages / expand[flat|nested] mbox.gz Atom feed top 2022-11-21 13:59 [PATCH v7 00/20] Drivers for gunyah hypervisor Elliot Berman 2022-11-21 13:59 ` Elliot Berman 2022-11-21 13:59 ` [PATCH v7 01/20] docs: gunyah: Introduce Gunyah Hypervisor Elliot Berman 2022-11-21 13:59 ` Elliot Berman 2022-11-21 13:59 ` [PATCH v7 02/20] dt-bindings: Add binding for gunyah hypervisor Elliot Berman 2022-11-21 13:59 ` Elliot Berman 2022-12-05 19:42 ` Rob Herring 2022-12-05 19:42 ` Rob Herring 2022-11-21 13:59 ` [PATCH v7 03/20] gunyah: Common types and error codes for Gunyah hypercalls Elliot Berman 2022-11-21 13:59 ` Elliot Berman 2022-11-21 13:59 ` [PATCH v7 04/20] arm64: smccc: Include alternative-macros.h Elliot Berman 2022-11-21 13:59 ` Elliot Berman 2022-11-21 13:59 ` [PATCH v7 05/20] virt: gunyah: Add hypercalls to identify Gunyah Elliot Berman 2022-11-21 13:59 ` Elliot Berman 2022-11-21 13:59 ` [PATCH v7 06/20] virt: gunyah: Identify hypervisor version Elliot Berman 2022-11-21 13:59 ` Elliot Berman 2022-11-21 13:59 ` [PATCH v7 07/20] mailbox: Allow direct registration to a channel Elliot Berman 2022-11-21 13:59 ` Elliot Berman 2022-11-22 4:34 ` kernel test robot 2022-11-21 13:59 ` [PATCH v7 08/20] virt: gunyah: msgq: Add hypercalls to send and receive messages Elliot Berman 2022-11-21 13:59 ` Elliot Berman 2022-11-21 13:59 ` [PATCH v7 09/20] mailbox: Add Gunyah message queue mailbox Elliot Berman 2022-11-21 13:59 ` Elliot Berman 2022-11-21 13:59 ` [PATCH v7 10/20] gunyah: rsc_mgr: Add resource manager RPC core Elliot Berman 2022-11-21 13:59 ` Elliot Berman 2022-11-21 15:23 ` Greg Kroah-Hartman 2022-11-21 15:23 ` Greg Kroah-Hartman 2022-12-12 23:46 ` Elliot Berman 2022-12-12 23:46 ` Elliot Berman 2022-12-13 6:25 ` Greg Kroah-Hartman 2022-12-13 6:25 ` Greg Kroah-Hartman 2022-11-21 15:24 ` Greg Kroah-Hartman 2022-11-21 15:24 ` Greg Kroah-Hartman 2022-12-12 23:46 ` Elliot Berman 2022-12-12 23:46 ` Elliot Berman 2022-12-13 6:26 ` Greg Kroah-Hartman 2022-12-13 6:26 ` Greg Kroah-Hartman 2022-12-16 2:25 ` Elliot Berman 2022-12-16 2:25 ` Elliot Berman 2023-01-26 21:27 ` Elliot Berman 2023-01-26 21:27 ` Elliot Berman 2022-11-21 14:00 ` [PATCH v7 11/20] gunyah: rsc_mgr: Add VM lifecycle RPC Elliot Berman 2022-11-21 14:00 ` Elliot Berman 2022-11-21 14:00 ` Elliot Berman [this message] 2022-11-21 14:00 ` [PATCH v7 12/20] gunyah: vm_mgr: Introduce basic VM Manager Elliot Berman 2022-11-21 14:00 ` [PATCH v7 13/20] gunyah: rsc_mgr: Add RPC for sharing memory Elliot Berman 2022-11-21 14:00 ` Elliot Berman 2022-11-21 14:00 ` [PATCH v7 14/20] gunyah: vm_mgr: Add/remove user memory regions Elliot Berman 2022-11-21 14:00 ` Elliot Berman 2022-11-21 14:00 ` [PATCH v7 15/20] gunyah: vm_mgr: Add ioctls to support basic non-proxy VM boot Elliot Berman 2022-11-21 14:00 ` Elliot Berman 2022-11-21 14:00 ` [PATCH v7 16/20] samples: Add sample userspace Gunyah VM Manager Elliot Berman 2022-11-21 14:00 ` Elliot Berman 2022-11-21 14:00 ` [PATCH v7 17/20] gunyah: rsc_mgr: Add platform ops on mem_lend/mem_reclaim Elliot Berman 2022-11-21 14:00 ` Elliot Berman 2022-11-21 14:00 ` [PATCH v7 18/20] firmware: qcom_scm: Use fixed width src vm bitmap Elliot Berman 2022-11-21 14:00 ` Elliot Berman 2022-11-21 14:00 ` Elliot Berman 2022-11-21 15:59 ` Kalle Valo 2022-11-21 15:59 ` Kalle Valo 2022-11-21 15:59 ` Kalle Valo 2022-11-21 14:00 ` [PATCH v7 19/20] firmware: qcom_scm: Register Gunyah platform ops Elliot Berman 2022-11-21 14:00 ` Elliot Berman 2022-12-02 16:55 ` kernel test robot 2022-11-21 14:00 ` [PATCH v7 20/20] docs: gunyah: Document Gunyah VM Manager Elliot Berman 2022-11-21 14:00 ` Elliot Berman
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