[v4,02/14] xen/asm-generic: introduce generic device.h

Message ID	67172a4fbf88833480203fcb1e2c640b6d39a556.1701093907.git.oleksii.kurochko@gmail.com (mailing list archive)
State	Superseded
Headers	show Return-Path: <xen-devel-bounces@lists.xenproject.org> Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" <xen-devel-bounces@lists.xenproject.org> From: Oleksii Kurochko <oleksii.kurochko@gmail.com> To: xen-devel@lists.xenproject.org Cc: Oleksii Kurochko <oleksii.kurochko@gmail.com>, Stefano Stabellini <sstabellini@kernel.org>, Julien Grall <julien@xen.org>, Bertrand Marquis <bertrand.marquis@arm.com>, Michal Orzel <michal.orzel@amd.com>, Volodymyr Babchuk <Volodymyr_Babchuk@epam.com>, Andrew Cooper <andrew.cooper3@citrix.com>, George Dunlap <george.dunlap@citrix.com>, Jan Beulich <jbeulich@suse.com>, Wei Liu <wl@xen.org>, Shawn Anastasio <sanastasio@raptorengineering.com> Subject: [PATCH v4 02/14] xen/asm-generic: introduce generic device.h Date: Mon, 27 Nov 2023 16:13:15 +0200 Message-ID: <67172a4fbf88833480203fcb1e2c640b6d39a556.1701093907.git.oleksii.kurochko@gmail.com> In-Reply-To: <cover.1701093907.git.oleksii.kurochko@gmail.com> References: <cover.1701093907.git.oleksii.kurochko@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit
Series	Introduce generic headers \| expand [v4,00/14] Introduce generic headers [v4,01/14] xen/asm-generic: introduce stub header paging.h [v4,02/14] xen/asm-generic: introduce generic device.h [v4,03/14] xen/asm-generic: introduce generic hypercall.h [v4,04/14] xen/asm-generic: introduce generic header iocap.h [v4,05/14] xen/asm-generic: introduce stub header <asm/random.h> [v4,06/14] xen/asm-generic: introduce generic header percpu.h [v4,07/14] xen/asm-generic: introduce generalized hardirq.h [v4,08/14] xen/asm-generic: introduce generic div64.h header [v4,09/14] xen/asm-generic: introduce generic header altp2m.h [v4,10/14] xen/asm-generic: introduce stub header monitor.h [v4,11/14] xen/asm-generic: introduce stub header numa.h [v4,12/14] xen/asm-generic: introduce stub header softirq.h [v4,13/14] xen: ifdef inclusion of <asm/grant_table.h> in <xen/grant_table.h> [v4,14/14] xen/asm-generic: ifdef inclusion of <asm/mem_access.h>

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 <xen/lib.h> 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 2dd2926b41..a26cbff68e 100644 --- a/xen/arch/arm/domain_build.c +++ b/xen/arch/arm/domain_build.c @@ -2361,7 +2361,7 @@ 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 9b35a8c8a7..d8f9aa0352 100644 --- a/xen/arch/arm/gic-v3.c +++ b/xen/arch/arm/gic-v3.c @@ -1875,7 +1875,7 @@ 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 @@ -1890,12 +1890,12 @@ 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 ece7fa66dd..df4c1ebb08 100644 --- a/xen/arch/arm/include/asm/Makefile +++ b/xen/arch/arm/include/asm/Makefile @@ -1,3 +1,4 @@ # SPDX-License-Identifier: GPL-2.0-only +generic-y += device.h generic-y += paging.h generic-y += vm_event.h diff --git a/xen/arch/ppc/include/asm/Makefile b/xen/arch/ppc/include/asm/Makefile index ece7fa66dd..df4c1ebb08 100644 --- a/xen/arch/ppc/include/asm/Makefile +++ b/xen/arch/ppc/include/asm/Makefile @@ -1,3 +1,4 @@ # SPDX-License-Identifier: GPL-2.0-only +generic-y += device.h generic-y += paging.h generic-y += vm_event.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/ppc/include/asm/irq.h b/xen/arch/ppc/include/asm/irq.h index 5c37d0cf25..49193fddff 100644 --- a/xen/arch/ppc/include/asm/irq.h +++ b/xen/arch/ppc/include/asm/irq.h @@ -3,7 +3,9 @@ #define __ASM_PPC_IRQ_H__ #include <xen/lib.h> +#ifdef CONFIG_HAS_DEVICE_TREE #include <xen/device_tree.h> +#endif #include <public/device_tree_defs.h> /* TODO */ @@ -25,9 +27,11 @@ static inline void arch_move_irqs(struct vcpu *v) BUG_ON("unimplemented"); } +#ifdef CONFIG_HAS_DEVICE_TREE static inline int platform_get_irq(const struct dt_device_node *device, int index) { BUG_ON("unimplemented"); } +#endif #endif /* __ASM_PPC_IRQ_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 <xen/stdbool.h> 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 <xen/device_tree.h> -#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: diff --git a/xen/include/headers++.chk.new b/xen/include/headers++.chk.new new file mode 100644 index 0000000000..e69de29bb2

[v4,02/14] xen/asm-generic: introduce generic device.h

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