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From 1da0eecb9f2086c880fdaf1260ae775bbfbf5f02 Mon Sep 17 00:00:00 2001
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From: Cornelia Huck <cohuck@redhat.com>
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Date: Tue, 23 Jun 2020 09:25:37 -0400
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Subject: [PATCH 03/12] linux-headers: support vfio-ccw features
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RH-Author: Cornelia Huck <cohuck@redhat.com>
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Message-id: <20200623092543.358315-4-cohuck@redhat.com>
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Patchwork-id: 97696
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O-Subject: [RHEL-8.3.0 qemu-kvm PATCH 3/9] linux-headers: support vfio-ccw features
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Bugzilla: 1660916
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RH-Acked-by: Claudio Imbrenda <cimbrend@redhat.com>
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RH-Acked-by: David Hildenbrand <david@redhat.com>
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RH-Acked-by: Thomas Huth <thuth@redhat.com>
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Partial update to support CRW and SCHIB regions.
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Upstream: n/a
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Signed-off-by: Cornelia Huck <cohuck@redhat.com>
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Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
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---
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linux-headers/linux/vfio.h | 3 +++
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linux-headers/linux/vfio_ccw.h | 19 +++++++++++++++++++
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2 files changed, 22 insertions(+)
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diff --git a/linux-headers/linux/vfio.h b/linux-headers/linux/vfio.h
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index fb10370d29..9e227348b3 100644
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--- a/linux-headers/linux/vfio.h
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+++ b/linux-headers/linux/vfio.h
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@@ -378,6 +378,8 @@ struct vfio_region_gfx_edid {
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/* sub-types for VFIO_REGION_TYPE_CCW */
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#define VFIO_REGION_SUBTYPE_CCW_ASYNC_CMD (1)
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+#define VFIO_REGION_SUBTYPE_CCW_SCHIB (2)
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+#define VFIO_REGION_SUBTYPE_CCW_CRW (3)
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/*
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* The MSIX mappable capability informs that MSIX data of a BAR can be mmapped
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@@ -577,6 +579,7 @@ enum {
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enum {
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VFIO_CCW_IO_IRQ_INDEX,
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+ VFIO_CCW_CRW_IRQ_INDEX,
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VFIO_CCW_NUM_IRQS
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};
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diff --git a/linux-headers/linux/vfio_ccw.h b/linux-headers/linux/vfio_ccw.h
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index fcc3e69ef5..6375d6ff25 100644
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--- a/linux-headers/linux/vfio_ccw.h
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+++ b/linux-headers/linux/vfio_ccw.h
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@@ -34,4 +34,23 @@ struct ccw_cmd_region {
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__u32 ret_code;
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} __attribute__((packed));
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+/*
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+ * Used for processing commands that read the subchannel-information block
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+ * Reading this region triggers a stsch() to hardware
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+ * Note: this is controlled by a capability
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+ */
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+struct ccw_schib_region {
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+#define SCHIB_AREA_SIZE 52
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+ __u8 schib_area[SCHIB_AREA_SIZE];
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+} __attribute__((packed));
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+
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+/*
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+ * Used for returning a Channel Report Word to userspace.
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+ * Note: this is controlled by a capability
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+ */
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+struct ccw_crw_region {
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+ __u32 crw;
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+ __u32 pad;
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+} __attribute__((packed));
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+
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#endif
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--
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2.27.0
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