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([94.75.70.14]) by smtp.gmail.com with ESMTPSA id i18-20020a2ea372000000b002c6ed7e546esm511142ljn.124.2023.12.01.12.48.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 01 Dec 2023 12:48:23 -0800 (PST) X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: f8a93560-908a-11ee-9b0f-b553b5be7939 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1701463704; x=1702068504; darn=lists.xenproject.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=zbQv/IdBQa83UkIVCYiNgPLJy5E21/Mcx7SRRKDsQK0=; b=Rl8sOnnuzxw/XZGHlM9VdIq1+wqooP+LN4gVAmVXxp06+KhkpqG5O0B5hKfNNL0ZsC GHlzplm93VacGhSjeFwmBofMQMdx8It/Ohp9E3okcA5p47mn9ZsBh7ptywnIQY8zgLxi /+hq5X7k/XsbmaAnpD2bcnB6XQRrtXjGjAHNX4wC3pPCYqPa7/7+2+ilJfeU3E8tFqrN Hy7Fxn89CXkaT2PpbWc8A9BdNfbK8UjogmgwFwMPesR+dM48aF57FHumMdBBTYJlEtAf nTduUexPmkS3Ss3icjrEmaJsd7NqybgPbG7rx7bPfghX0D3HmdB0kMr1PwsFr1op4cSp nnXg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1701463704; x=1702068504; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=zbQv/IdBQa83UkIVCYiNgPLJy5E21/Mcx7SRRKDsQK0=; b=Oxv/l5Ypf2OdHhioCHlbf96bJNLptjtij6ANgX0MGCGuwkydqtngQgzQ2Gvpd1AYW1 OmcCJHNF2tAL4wF7cFyDQrQ6x6RHleZguHTjOPS5gDgxI+t5AYViLdpf7MW7QEtrkIfM 9zLd+sFXn8Y0x9KSR+njKNulyuJdRVxkTGYDcTR0E0C9fDwqGnkJRVANN42P/zkk0SN4 SaM0qXcTqcxCcr+Ljnpf2MtZHaFVk/cCWgMFFibBP9/QodsZuTTtNnB6CtGkuLPv7y0N f8yagxtNi10R7nxNCR5KUy837S1pgiGcuyEPs8cB6FCxe/sQq/zywRPB9FCn7Zq2zqwI qEzg== X-Gm-Message-State: AOJu0YxLUUwjvD6xaBwoShESfeihlXdMCldCQVjaPF8kFEMGdKYAk1kN Oqd9IR0R2/P5JGqi3uoByBSUA0XS+kdxBA== X-Google-Smtp-Source: AGHT+IF03NQK4DYzakt4daF2vEkoDuVlRTeGblp5ZgHEAgmG1vtmcna/lUxnf1FeAaW0T00TDHcEaw== X-Received: by 2002:a2e:99d5:0:b0:2c9:e7d6:551c with SMTP id l21-20020a2e99d5000000b002c9e7d6551cmr484001ljj.84.1701463703975; Fri, 01 Dec 2023 12:48:23 -0800 (PST) From: Oleksii Kurochko To: xen-devel@lists.xenproject.org Cc: Oleksii Kurochko , Stefano Stabellini , Julien Grall , Bertrand Marquis , Michal Orzel , Volodymyr Babchuk , Andrew Cooper , George Dunlap , Jan Beulich , Wei Liu , Shawn Anastasio Subject: [PATCH v5 7/7] xen/asm-generic: introduce generic device.h Date: Fri, 1 Dec 2023 22:48:10 +0200 Message-ID: <13c839b2ae26ec8a677048c02da9fa1a9ce14d3c.1701453087.git.oleksii.kurochko@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: References: MIME-Version: 1.0 Arm, PPC and RISC-V use the same device.h thereby device.h was moved to asm-generic. Arm's device.h was taken as a base with the following changes: - #ifdef PCI related things. - #ifdef ACPI related things. - Rename #ifdef guards. - Add SPDX tag. - #ifdef CONFIG_HAS_DEVICE_TREE related things. - #ifdef-ing iommu related things with CONFIG_HAS_PASSTHROUGH. Also Arm and PPC are switched to asm-generic version of device.h Signed-off-by: Oleksii Kurochko --- Jan wrote the following: Overall I think there are too many changes done all in one go here. But it's mostly Arm which is affected, so I'll leave judging about that to the Arm maintainers. Arm maintainers will it be fine for you to not split the patch? --- Changes in V5: - Removed generated file: xen/include/headers++.chk.new - Removed pointless #ifdef CONFIG_HAS_DEVICE_TREE ... #endif for PPC as CONFIG_HAS_DEVICE_TREE will be always used for PPC. --- Changes in V4: - Updated the commit message - Switched Arm and PPC to asm-generic version of device.h - Replaced HAS_PCI with CONFIG_HAS_PCI - ifdef-ing iommu filed of dev_archdata struct with CONFIG_HAS_PASSTHROUGH - ifdef-ing iommu_fwspec of device struct with CONFIG_HAS_PASSTHROUGH - ifdef-ing DT related things with CONFIG_HAS_DEVICE_TREE - Updated the commit message ( remove a note with question about if device.h should be in asm-generic or not ) - Replaced DEVICE_IC with DEVICE_INTERRUPT_CONTROLLER - Rationalized usage of CONFIG_HAS_* in device.h - Fixed indents for ACPI_DEVICE_START and ACPI_DEVICE_END --- Changes in V3: - ifdef device tree related things. - update the commit message --- Changes in V2: - take ( as common ) device.h from Arm as PPC and RISC-V use it as a base. - #ifdef PCI related things. - #ifdef ACPI related things. - rename DEVICE_GIC to DEVIC_IC. - rename #ifdef guards. - switch Arm and PPC to generic device.h - add SPDX tag - update the commit message --- xen/arch/arm/device.c | 15 ++- xen/arch/arm/domain_build.c | 2 +- xen/arch/arm/gic-v2.c | 4 +- xen/arch/arm/gic-v3.c | 6 +- xen/arch/arm/gic.c | 4 +- xen/arch/arm/include/asm/Makefile | 1 + xen/arch/ppc/include/asm/Makefile | 1 + xen/arch/ppc/include/asm/device.h | 53 -------- .../asm => include/asm-generic}/device.h | 125 +++++++++++------- 9 files changed, 102 insertions(+), 109 deletions(-) delete mode 100644 xen/arch/ppc/include/asm/device.h rename xen/{arch/arm/include/asm => include/asm-generic}/device.h (79%) diff --git a/xen/arch/arm/device.c b/xen/arch/arm/device.c index 1f631d3274..affbe79f9a 100644 --- a/xen/arch/arm/device.c +++ b/xen/arch/arm/device.c @@ -16,7 +16,10 @@ #include extern const struct device_desc _sdevice[], _edevice[]; + +#ifdef CONFIG_ACPI extern const struct acpi_device_desc _asdevice[], _aedevice[]; +#endif int __init device_init(struct dt_device_node *dev, enum device_class class, const void *data) @@ -45,6 +48,7 @@ int __init device_init(struct dt_device_node *dev, enum device_class class, return -EBADF; } +#ifdef CONFIG_ACPI int __init acpi_device_init(enum device_class class, const void *data, int class_type) { const struct acpi_device_desc *desc; @@ -61,6 +65,7 @@ int __init acpi_device_init(enum device_class class, const void *data, int class return -EBADF; } +#endif enum device_class device_get_class(const struct dt_device_node *dev) { @@ -329,9 +334,13 @@ int handle_device(struct domain *d, struct dt_device_node *dev, p2m_type_t p2mt, struct map_range_data mr_data = { .d = d, .p2mt = p2mt, - .skip_mapping = !own_device || - (is_pci_passthrough_enabled() && - (device_get_class(dev) == DEVICE_PCI_HOSTBRIDGE)), + .skip_mapping = + !own_device +#ifdef CONFIG_HAS_PCI + || (is_pci_passthrough_enabled() && + (device_get_class(dev) == DEVICE_PCI_HOSTBRIDGE)) +#endif + , .iomem_ranges = iomem_ranges, .irq_ranges = irq_ranges }; diff --git a/xen/arch/arm/domain_build.c b/xen/arch/arm/domain_build.c index 28df515a3d..a0518993b1 100644 --- a/xen/arch/arm/domain_build.c +++ b/xen/arch/arm/domain_build.c @@ -1651,7 +1651,7 @@ static int __init handle_node(struct domain *d, struct kernel_info *kinfo, * Replace these nodes with our own. Note that the original may be * used_by DOMID_XEN so this check comes first. */ - if ( device_get_class(node) == DEVICE_GIC ) + if ( device_get_class(node) == DEVICE_INTERRUPT_CONTROLLER ) return make_gic_node(d, kinfo->fdt, node); if ( dt_match_node(timer_matches, node) ) return make_timer_node(kinfo); diff --git a/xen/arch/arm/gic-v2.c b/xen/arch/arm/gic-v2.c index cf392bfd1c..5d6885e389 100644 --- a/xen/arch/arm/gic-v2.c +++ b/xen/arch/arm/gic-v2.c @@ -1366,7 +1366,7 @@ static const struct dt_device_match gicv2_dt_match[] __initconst = { /* sentinel */ }, }; -DT_DEVICE_START(gicv2, "GICv2", DEVICE_GIC) +DT_DEVICE_START(gicv2, "GICv2", DEVICE_INTERRUPT_CONTROLLER) .dt_match = gicv2_dt_match, .init = gicv2_dt_preinit, DT_DEVICE_END @@ -1381,7 +1381,7 @@ static int __init gicv2_acpi_preinit(const void *data) return 0; } -ACPI_DEVICE_START(agicv2, "GICv2", DEVICE_GIC) +ACPI_DEVICE_START(agicv2, "GICv2", DEVICE_INTERRUPT_CONTROLLER) .class_type = ACPI_MADT_GIC_VERSION_V2, .init = gicv2_acpi_preinit, ACPI_DEVICE_END diff --git a/xen/arch/arm/gic-v3.c b/xen/arch/arm/gic-v3.c index 18289cd645..9e135aeb3d 100644 --- a/xen/arch/arm/gic-v3.c +++ b/xen/arch/arm/gic-v3.c @@ -1879,7 +1879,7 @@ static const struct dt_device_match gicv3_dt_match[] __initconst = { /* sentinel */ }, }; -DT_DEVICE_START(gicv3, "GICv3", DEVICE_GIC) +DT_DEVICE_START(gicv3, "GICv3", DEVICE_INTERRUPT_CONTROLLER) .dt_match = gicv3_dt_match, .init = gicv3_dt_preinit, DT_DEVICE_END @@ -1894,12 +1894,12 @@ static int __init gicv3_acpi_preinit(const void *data) return 0; } -ACPI_DEVICE_START(agicv3, "GICv3", DEVICE_GIC) +ACPI_DEVICE_START(agicv3, "GICv3", DEVICE_INTERRUPT_CONTROLLER) .class_type = ACPI_MADT_GIC_VERSION_V3, .init = gicv3_acpi_preinit, ACPI_DEVICE_END -ACPI_DEVICE_START(agicv4, "GICv4", DEVICE_GIC) +ACPI_DEVICE_START(agicv4, "GICv4", DEVICE_INTERRUPT_CONTROLLER) .class_type = ACPI_MADT_GIC_VERSION_V4, .init = gicv3_acpi_preinit, ACPI_DEVICE_END diff --git a/xen/arch/arm/gic.c b/xen/arch/arm/gic.c index d922ea67aa..b5a9c8266c 100644 --- a/xen/arch/arm/gic.c +++ b/xen/arch/arm/gic.c @@ -234,7 +234,7 @@ static void __init gic_dt_preinit(void) if ( !dt_get_parent(node) ) continue; - rc = device_init(node, DEVICE_GIC, NULL); + rc = device_init(node, DEVICE_INTERRUPT_CONTROLLER, NULL); if ( !rc ) { /* NOTE: Only one GIC is supported */ @@ -262,7 +262,7 @@ static void __init gic_acpi_preinit(void) dist = container_of(header, struct acpi_madt_generic_distributor, header); - if ( acpi_device_init(DEVICE_GIC, NULL, dist->version) ) + if ( acpi_device_init(DEVICE_INTERRUPT_CONTROLLER, NULL, dist->version) ) panic("Unable to find compatible GIC in the ACPI table\n"); } #else diff --git a/xen/arch/arm/include/asm/Makefile b/xen/arch/arm/include/asm/Makefile index a28cc5d1b1..c3f4291ee2 100644 --- a/xen/arch/arm/include/asm/Makefile +++ b/xen/arch/arm/include/asm/Makefile @@ -1,5 +1,6 @@ # SPDX-License-Identifier: GPL-2.0-only generic-y += altp2m.h +generic-y += device.h generic-y += hardirq.h generic-y += iocap.h generic-y += numa.h diff --git a/xen/arch/ppc/include/asm/Makefile b/xen/arch/ppc/include/asm/Makefile index efd72862c8..adb752b804 100644 --- a/xen/arch/ppc/include/asm/Makefile +++ b/xen/arch/ppc/include/asm/Makefile @@ -1,5 +1,6 @@ # SPDX-License-Identifier: GPL-2.0-only generic-y += altp2m.h +generic-y += device.h generic-y += div64.h generic-y += hardirq.h generic-y += hypercall.h diff --git a/xen/arch/ppc/include/asm/device.h b/xen/arch/ppc/include/asm/device.h deleted file mode 100644 index 8253e61d51..0000000000 --- a/xen/arch/ppc/include/asm/device.h +++ /dev/null @@ -1,53 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-only */ -#ifndef __ASM_PPC_DEVICE_H__ -#define __ASM_PPC_DEVICE_H__ - -enum device_type -{ - DEV_DT, - DEV_PCI, -}; - -struct device { - enum device_type type; -#ifdef CONFIG_HAS_DEVICE_TREE - struct dt_device_node *of_node; /* Used by drivers imported from Linux */ -#endif -}; - -enum device_class -{ - DEVICE_SERIAL, - DEVICE_IOMMU, - DEVICE_PCI_HOSTBRIDGE, - /* Use for error */ - DEVICE_UNKNOWN, -}; - -struct device_desc { - /* Device name */ - const char *name; - /* Device class */ - enum device_class class; - /* List of devices supported by this driver */ - const struct dt_device_match *dt_match; - /* - * Device initialization. - * - * -EAGAIN is used to indicate that device probing is deferred. - */ - int (*init)(struct dt_device_node *dev, const void *data); -}; - -typedef struct device device_t; - -#define DT_DEVICE_START(name_, namestr_, class_) \ -static const struct device_desc __dev_desc_##name_ __used \ -__section(".dev.info") = { \ - .name = namestr_, \ - .class = class_, \ - -#define DT_DEVICE_END \ -}; - -#endif /* __ASM_PPC_DEVICE_H__ */ diff --git a/xen/arch/arm/include/asm/device.h b/xen/include/asm-generic/device.h similarity index 79% rename from xen/arch/arm/include/asm/device.h rename to xen/include/asm-generic/device.h index b5d451e087..063c448c4e 100644 --- a/xen/arch/arm/include/asm/device.h +++ b/xen/include/asm-generic/device.h @@ -1,14 +1,37 @@ -#ifndef __ASM_ARM_DEVICE_H -#define __ASM_ARM_DEVICE_H +/* SPDX-License-Identifier: GPL-2.0-only */ +#ifndef __ASM_GENERIC_DEVICE_H__ +#define __ASM_GENERIC_DEVICE_H__ + +#include enum device_type { +#ifdef CONFIG_HAS_DEVICE_TREE DEV_DT, +#endif + +#ifdef CONFIG_HAS_PCI DEV_PCI, +#endif + DEV_TYPE_MAX, +}; + +enum device_class +{ + DEVICE_SERIAL, + DEVICE_IOMMU, + DEVICE_INTERRUPT_CONTROLLER, +#ifdef CONFIG_HAS_PCI + DEVICE_PCI_HOSTBRIDGE, +#endif + /* Use for error */ + DEVICE_UNKNOWN, }; struct dev_archdata { +#ifdef CONFIG_HAS_PASSTHROUGH void *iommu; /* IOMMU private data */ +#endif }; /* struct device - The basic device structure */ @@ -19,31 +42,65 @@ struct device struct dt_device_node *of_node; /* Used by drivers imported from Linux */ #endif struct dev_archdata archdata; +#ifdef CONFIG_HAS_PASSTHROUGH struct iommu_fwspec *iommu_fwspec; /* per-device IOMMU instance data */ +#endif }; typedef struct device device_t; +#ifdef CONFIG_HAS_DEVICE_TREE + #include -#define dev_is_pci(dev) ((dev)->type == DEV_PCI) #define dev_is_dt(dev) ((dev)->type == DEV_DT) -enum device_class -{ - DEVICE_SERIAL, - DEVICE_IOMMU, - DEVICE_GIC, - DEVICE_PCI_HOSTBRIDGE, - /* Use for error */ - DEVICE_UNKNOWN, +/** + * device_init - Initialize a device + * @dev: device to initialize + * @class: class of the device (serial, network...) + * @data: specific data for initializing the device + * + * Return 0 on success. + */ +int device_init(struct dt_device_node *dev, enum device_class class, + const void *data); + +/** + * device_get_type - Get the type of the device + * @dev: device to match + * + * Return the device type on success or DEVICE_ANY on failure + */ +enum device_class device_get_class(const struct dt_device_node *dev); + +#define DT_DEVICE_START(_name, _namestr, _class) \ +static const struct device_desc __dev_desc_##_name __used \ +__section(".dev.info") = { \ + .name = _namestr, \ + .class = _class, \ + +#define DT_DEVICE_END \ }; +#else /* !CONFIG_HAS_DEVICE_TREE */ +#define dev_is_dt(dev) ((void)(dev), false) +#endif /* CONFIG_HAS_DEVICE_TREE */ + +#ifdef CONFIG_HAS_PCI +#define dev_is_pci(dev) ((dev)->type == DEV_PCI) +#else +#define dev_is_pci(dev) ((void)(dev), false) +#endif + struct device_desc { /* Device name */ const char *name; /* Device class */ enum device_class class; + +#ifdef CONFIG_HAS_DEVICE_TREE + /* List of devices supported by this driver */ const struct dt_device_match *dt_match; /* @@ -52,8 +109,12 @@ struct device_desc { * -EAGAIN is used to indicate that device probing is deferred. */ int (*init)(struct dt_device_node *dev, const void *data); + +#endif }; +#ifdef CONFIG_ACPI + struct acpi_device_desc { /* Device name */ const char *name; @@ -75,44 +136,18 @@ struct acpi_device_desc { int acpi_device_init(enum device_class class, const void *data, int class_type); -/** - * device_init - Initialize a device - * @dev: device to initialize - * @class: class of the device (serial, network...) - * @data: specific data for initializing the device - * - * Return 0 on success. - */ -int device_init(struct dt_device_node *dev, enum device_class class, - const void *data); - -/** - * device_get_type - Get the type of the device - * @dev: device to match - * - * Return the device type on success or DEVICE_ANY on failure - */ -enum device_class device_get_class(const struct dt_device_node *dev); +#define ACPI_DEVICE_START(_name, _namestr, _class) \ +static const struct acpi_device_desc __dev_desc_##_name __used \ +__section(".adev.info") = { \ + .name = _namestr, \ + .class = _class, \ -#define DT_DEVICE_START(_name, _namestr, _class) \ -static const struct device_desc __dev_desc_##_name __used \ -__section(".dev.info") = { \ - .name = _namestr, \ - .class = _class, \ - -#define DT_DEVICE_END \ +#define ACPI_DEVICE_END \ }; -#define ACPI_DEVICE_START(_name, _namestr, _class) \ -static const struct acpi_device_desc __dev_desc_##_name __used \ -__section(".adev.info") = { \ - .name = _namestr, \ - .class = _class, \ - -#define ACPI_DEVICE_END \ -}; +#endif /* CONFIG_ACPI */ -#endif /* __ASM_ARM_DEVICE_H */ +#endif /* __ASM_GENERIC_DEVICE_H__ */ /* * Local variables: