From: Baptiste Reynal <b.reynal@virtualopensystems.com> To: iommu@lists.linux-foundation.org, kvmarm@lists.cs.columbia.edu Cc: tech@virtualopensystems.com, Antonios Motakis <a.motakis@virtualopensystems.com>, Baptiste Reynal <b.reynal@virtualopensystems.com>, Alex Williamson <alex.williamson@redhat.com>, kvm@vger.kernel.org (open list:VFIO DRIVER), linux-kernel@vger.kernel.org (open list) Subject: [PATCH v14 20/20] vfio/platform: implement IRQ masking/unmasking via an eventfd Date: Mon, 2 Mar 2015 18:00:00 +0100 [thread overview] Message-ID: <1425315600-29761-21-git-send-email-b.reynal@virtualopensystems.com> (raw) In-Reply-To: <1425315600-29761-1-git-send-email-b.reynal@virtualopensystems.com> From: Antonios Motakis <a.motakis@virtualopensystems.com> With this patch the VFIO user will be able to set an eventfd that can be used in order to mask and unmask IRQs of platform devices. Signed-off-by: Antonios Motakis <a.motakis@virtualopensystems.com> Signed-off-by: Baptiste Reynal <b.reynal@virtualopensystems.com> --- drivers/vfio/platform/vfio_platform_irq.c | 47 ++++++++++++++++++++++++--- drivers/vfio/platform/vfio_platform_private.h | 2 ++ 2 files changed, 45 insertions(+), 4 deletions(-) diff --git a/drivers/vfio/platform/vfio_platform_irq.c b/drivers/vfio/platform/vfio_platform_irq.c index e0e6388..88bba57 100644 --- a/drivers/vfio/platform/vfio_platform_irq.c +++ b/drivers/vfio/platform/vfio_platform_irq.c @@ -37,6 +37,15 @@ static void vfio_platform_mask(struct vfio_platform_irq *irq_ctx) spin_unlock_irqrestore(&irq_ctx->lock, flags); } +static int vfio_platform_mask_handler(void *opaque, void *unused) +{ + struct vfio_platform_irq *irq_ctx = opaque; + + vfio_platform_mask(irq_ctx); + + return 0; +} + static int vfio_platform_set_irq_mask(struct vfio_platform_device *vdev, unsigned index, unsigned start, unsigned count, uint32_t flags, @@ -48,8 +57,18 @@ static int vfio_platform_set_irq_mask(struct vfio_platform_device *vdev, if (!(vdev->irqs[index].flags & VFIO_IRQ_INFO_MASKABLE)) return -EINVAL; - if (flags & VFIO_IRQ_SET_DATA_EVENTFD) - return -EINVAL; /* not implemented yet */ + if (flags & VFIO_IRQ_SET_DATA_EVENTFD) { + int32_t fd = *(int32_t *)data; + + if (fd >= 0) + return vfio_virqfd_enable((void *) &vdev->irqs[index], + vfio_platform_mask_handler, + NULL, NULL, + &vdev->irqs[index].mask, fd); + + vfio_virqfd_disable(&vdev->irqs[index].mask); + return 0; + } if (flags & VFIO_IRQ_SET_DATA_NONE) { vfio_platform_mask(&vdev->irqs[index]); @@ -78,6 +97,15 @@ static void vfio_platform_unmask(struct vfio_platform_irq *irq_ctx) spin_unlock_irqrestore(&irq_ctx->lock, flags); } +static int vfio_platform_unmask_handler(void *opaque, void *unused) +{ + struct vfio_platform_irq *irq_ctx = opaque; + + vfio_platform_unmask(irq_ctx); + + return 0; +} + static int vfio_platform_set_irq_unmask(struct vfio_platform_device *vdev, unsigned index, unsigned start, unsigned count, uint32_t flags, @@ -89,8 +117,19 @@ static int vfio_platform_set_irq_unmask(struct vfio_platform_device *vdev, if (!(vdev->irqs[index].flags & VFIO_IRQ_INFO_MASKABLE)) return -EINVAL; - if (flags & VFIO_IRQ_SET_DATA_EVENTFD) - return -EINVAL; /* not implemented yet */ + if (flags & VFIO_IRQ_SET_DATA_EVENTFD) { + int32_t fd = *(int32_t *)data; + + if (fd >= 0) + return vfio_virqfd_enable((void *) &vdev->irqs[index], + vfio_platform_unmask_handler, + NULL, NULL, + &vdev->irqs[index].unmask, + fd); + + vfio_virqfd_disable(&vdev->irqs[index].unmask); + return 0; + } if (flags & VFIO_IRQ_SET_DATA_NONE) { vfio_platform_unmask(&vdev->irqs[index]); diff --git a/drivers/vfio/platform/vfio_platform_private.h b/drivers/vfio/platform/vfio_platform_private.h index ff2db1d..5d31e04 100644 --- a/drivers/vfio/platform/vfio_platform_private.h +++ b/drivers/vfio/platform/vfio_platform_private.h @@ -35,6 +35,8 @@ struct vfio_platform_irq { struct eventfd_ctx *trigger; bool masked; spinlock_t lock; + struct virqfd *unmask; + struct virqfd *mask; }; struct vfio_platform_region { -- 2.3.1
WARNING: multiple messages have this Message-ID (diff)
From: Baptiste Reynal <b.reynal-lrHrjnjw1UfHK3s98zE1ajGjJy/sRE9J@public.gmane.org> To: iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org, kvmarm-FPEHb7Xf0XXUo1n7N8X6UoWGPAHP3yOg@public.gmane.org Cc: "open list:VFIO DRIVER" <kvm-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>, open list <linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>, Antonios Motakis <a.motakis-lrHrjnjw1UfHK3s98zE1ajGjJy/sRE9J@public.gmane.org>, tech-lrHrjnjw1UfHK3s98zE1ajGjJy/sRE9J@public.gmane.org Subject: [PATCH v14 20/20] vfio/platform: implement IRQ masking/unmasking via an eventfd Date: Mon, 2 Mar 2015 18:00:00 +0100 [thread overview] Message-ID: <1425315600-29761-21-git-send-email-b.reynal@virtualopensystems.com> (raw) In-Reply-To: <1425315600-29761-1-git-send-email-b.reynal-lrHrjnjw1UfHK3s98zE1ajGjJy/sRE9J@public.gmane.org> From: Antonios Motakis <a.motakis-lrHrjnjw1UfHK3s98zE1ajGjJy/sRE9J@public.gmane.org> With this patch the VFIO user will be able to set an eventfd that can be used in order to mask and unmask IRQs of platform devices. Signed-off-by: Antonios Motakis <a.motakis-lrHrjnjw1UfHK3s98zE1ajGjJy/sRE9J@public.gmane.org> Signed-off-by: Baptiste Reynal <b.reynal-lrHrjnjw1UfHK3s98zE1ajGjJy/sRE9J@public.gmane.org> --- drivers/vfio/platform/vfio_platform_irq.c | 47 ++++++++++++++++++++++++--- drivers/vfio/platform/vfio_platform_private.h | 2 ++ 2 files changed, 45 insertions(+), 4 deletions(-) diff --git a/drivers/vfio/platform/vfio_platform_irq.c b/drivers/vfio/platform/vfio_platform_irq.c index e0e6388..88bba57 100644 --- a/drivers/vfio/platform/vfio_platform_irq.c +++ b/drivers/vfio/platform/vfio_platform_irq.c @@ -37,6 +37,15 @@ static void vfio_platform_mask(struct vfio_platform_irq *irq_ctx) spin_unlock_irqrestore(&irq_ctx->lock, flags); } +static int vfio_platform_mask_handler(void *opaque, void *unused) +{ + struct vfio_platform_irq *irq_ctx = opaque; + + vfio_platform_mask(irq_ctx); + + return 0; +} + static int vfio_platform_set_irq_mask(struct vfio_platform_device *vdev, unsigned index, unsigned start, unsigned count, uint32_t flags, @@ -48,8 +57,18 @@ static int vfio_platform_set_irq_mask(struct vfio_platform_device *vdev, if (!(vdev->irqs[index].flags & VFIO_IRQ_INFO_MASKABLE)) return -EINVAL; - if (flags & VFIO_IRQ_SET_DATA_EVENTFD) - return -EINVAL; /* not implemented yet */ + if (flags & VFIO_IRQ_SET_DATA_EVENTFD) { + int32_t fd = *(int32_t *)data; + + if (fd >= 0) + return vfio_virqfd_enable((void *) &vdev->irqs[index], + vfio_platform_mask_handler, + NULL, NULL, + &vdev->irqs[index].mask, fd); + + vfio_virqfd_disable(&vdev->irqs[index].mask); + return 0; + } if (flags & VFIO_IRQ_SET_DATA_NONE) { vfio_platform_mask(&vdev->irqs[index]); @@ -78,6 +97,15 @@ static void vfio_platform_unmask(struct vfio_platform_irq *irq_ctx) spin_unlock_irqrestore(&irq_ctx->lock, flags); } +static int vfio_platform_unmask_handler(void *opaque, void *unused) +{ + struct vfio_platform_irq *irq_ctx = opaque; + + vfio_platform_unmask(irq_ctx); + + return 0; +} + static int vfio_platform_set_irq_unmask(struct vfio_platform_device *vdev, unsigned index, unsigned start, unsigned count, uint32_t flags, @@ -89,8 +117,19 @@ static int vfio_platform_set_irq_unmask(struct vfio_platform_device *vdev, if (!(vdev->irqs[index].flags & VFIO_IRQ_INFO_MASKABLE)) return -EINVAL; - if (flags & VFIO_IRQ_SET_DATA_EVENTFD) - return -EINVAL; /* not implemented yet */ + if (flags & VFIO_IRQ_SET_DATA_EVENTFD) { + int32_t fd = *(int32_t *)data; + + if (fd >= 0) + return vfio_virqfd_enable((void *) &vdev->irqs[index], + vfio_platform_unmask_handler, + NULL, NULL, + &vdev->irqs[index].unmask, + fd); + + vfio_virqfd_disable(&vdev->irqs[index].unmask); + return 0; + } if (flags & VFIO_IRQ_SET_DATA_NONE) { vfio_platform_unmask(&vdev->irqs[index]); diff --git a/drivers/vfio/platform/vfio_platform_private.h b/drivers/vfio/platform/vfio_platform_private.h index ff2db1d..5d31e04 100644 --- a/drivers/vfio/platform/vfio_platform_private.h +++ b/drivers/vfio/platform/vfio_platform_private.h @@ -35,6 +35,8 @@ struct vfio_platform_irq { struct eventfd_ctx *trigger; bool masked; spinlock_t lock; + struct virqfd *unmask; + struct virqfd *mask; }; struct vfio_platform_region { -- 2.3.1
next prev parent reply other threads:[~2015-03-02 17:03 UTC|newest] Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top 2015-03-02 16:59 [PATCH v14 00/20] VFIO support for platform devices Baptiste Reynal 2015-03-02 16:59 ` [PATCH v14 01/20] vfio/platform: initial skeleton of " Baptiste Reynal 2015-03-02 16:59 ` Baptiste Reynal 2015-03-02 16:59 ` [PATCH v14 02/20] vfio: platform: probe to devices on the platform bus Baptiste Reynal 2015-03-02 16:59 ` Baptiste Reynal 2015-03-02 16:59 ` [PATCH v14 03/20] vfio: platform: add the VFIO PLATFORM module to Kconfig Baptiste Reynal 2015-03-02 16:59 ` Baptiste Reynal 2015-03-02 16:59 ` [PATCH v14 04/20] vfio: amba: VFIO support for AMBA devices Baptiste Reynal 2015-03-02 16:59 ` Baptiste Reynal 2015-03-02 16:59 ` [PATCH v14 05/20] vfio: amba: add the VFIO for AMBA devices module to Kconfig Baptiste Reynal 2015-03-02 16:59 ` Baptiste Reynal 2015-03-02 16:59 ` [PATCH v14 06/20] vfio/platform: return info for bound device Baptiste Reynal 2015-03-02 16:59 ` Baptiste Reynal 2015-03-02 16:59 ` [PATCH v14 07/20] vfio/platform: return info for device memory mapped IO regions Baptiste Reynal 2015-03-02 16:59 ` Baptiste Reynal 2015-03-02 16:59 ` [PATCH v14 08/20] vfio/platform: read and write support for the device fd Baptiste Reynal 2015-03-02 16:59 ` Baptiste Reynal 2015-03-02 16:59 ` [PATCH v14 09/20] vfio/platform: support MMAP of MMIO regions Baptiste Reynal 2015-03-02 16:59 ` Baptiste Reynal 2015-03-02 16:59 ` [PATCH v14 10/20] vfio/platform: return IRQ info Baptiste Reynal 2015-03-02 16:59 ` Baptiste Reynal 2015-03-02 16:59 ` [PATCH v14 11/20] vfio/platform: initial interrupts support code Baptiste Reynal 2015-03-02 16:59 ` Baptiste Reynal 2015-03-02 16:59 ` [PATCH v14 12/20] vfio/platform: trigger an interrupt via eventfd Baptiste Reynal 2015-03-02 16:59 ` Baptiste Reynal 2015-03-02 16:59 ` [PATCH v14 13/20] vfio/platform: support for level sensitive interrupts Baptiste Reynal 2015-03-02 16:59 ` Baptiste Reynal 2015-03-02 16:59 ` [PATCH v14 14/20] vfio: add a vfio_ prefix to virqfd_enable and virqfd_disable and export Baptiste Reynal 2015-03-02 16:59 ` Baptiste Reynal 2015-03-02 16:59 ` [PATCH v14 15/20] vfio: virqfd: rename vfio_pci_virqfd_init and vfio_pci_virqfd_exit Baptiste Reynal 2015-03-02 16:59 ` Baptiste Reynal 2015-03-02 16:59 ` [PATCH v14 16/20] vfio: add local lock for virqfd instead of depending on VFIO PCI Baptiste Reynal 2015-03-02 16:59 ` Baptiste Reynal 2015-03-02 16:59 ` [PATCH v14 17/20] vfio: pass an opaque pointer on virqfd initialization Baptiste Reynal 2015-03-02 16:59 ` Baptiste Reynal 2015-03-02 16:59 ` [PATCH v14 18/20] vfio: move eventfd support code for VFIO_PCI to a separate file Baptiste Reynal 2015-03-02 16:59 ` Baptiste Reynal 2015-03-02 16:59 ` [PATCH v14 19/20] vfio: initialize the virqfd workqueue in VFIO generic code Baptiste Reynal 2015-03-02 16:59 ` Baptiste Reynal 2015-03-17 22:29 ` Alex Williamson 2015-03-17 23:04 ` Alex Williamson 2015-03-18 13:39 ` Baptiste Reynal 2015-03-18 13:39 ` Baptiste Reynal 2015-03-02 17:00 ` Baptiste Reynal [this message] 2015-03-02 17:00 ` [PATCH v14 20/20] vfio/platform: implement IRQ masking/unmasking via an eventfd Baptiste Reynal [not found] ` <1425315600-29761-1-git-send-email-b.reynal-lrHrjnjw1UfHK3s98zE1ajGjJy/sRE9J@public.gmane.org> 2015-03-03 10:06 ` [PATCH v14 00/20] VFIO support for platform devices Baptiste Reynal [not found] ` <CAN9JPjH0MQ-f2Vp-Cpd4GZfBtvVjWZKh_WDKrZz40AK14_Awrw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org> 2015-03-10 17:42 ` Eric Auger [not found] ` <54FF2CEF.1050705-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org> 2015-03-10 18:04 ` Alex Williamson [not found] ` <1426010680.25026.77.camel-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2015-03-11 8:40 ` Eric Auger [not found] ` <54FFFF96.4010200-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org> 2015-03-11 10:08 ` Baptiste Reynal 2015-03-11 15:52 ` Eric Auger [not found] ` <550064C9.9050408-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org> 2015-03-11 17:14 ` Baptiste Reynal [not found] ` <CAN9JPjFpcu7NkgoCmMGZTw191g79mmtsbqzmj6z8s_bTMNKMPA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org> 2015-03-11 15:54 ` Alex Williamson 2015-03-16 21:59 ` Alex Williamson
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