[Qemu-devel] [RFC v4 02/16] linux-headers: Update for virtio-iommu

[Eric Auger <eric.auger@redhat.com>]

This is a partial linux header update against Jean-Philippe's branch:
git://linux-arm.org/linux-jpb.git virtio-iommu/v0.4 (unstable)

Signed-off-by: Eric Auger <eric.auger@redhat.com>

---

v3- >v3:
- upgrade the API from v0.1 to v0.4
---
 include/standard-headers/linux/virtio_ids.h   |   1 +
 include/standard-headers/linux/virtio_iommu.h | 177 ++++++++++++++++++++++++++
 linux-headers/linux/virtio_iommu.h            |   1 +
 3 files changed, 179 insertions(+)
 create mode 100644 include/standard-headers/linux/virtio_iommu.h
 create mode 100644 linux-headers/linux/virtio_iommu.h

diff --git a/include/standard-headers/linux/virtio_ids.h b/include/standard-headers/linux/virtio_ids.h
index 6d5c3b2..934ed3d 100644
--- a/include/standard-headers/linux/virtio_ids.h
+++ b/include/standard-headers/linux/virtio_ids.h
@@ -43,5 +43,6 @@
 #define VIRTIO_ID_INPUT        18 /* virtio input */
 #define VIRTIO_ID_VSOCK        19 /* virtio vsock transport */
 #define VIRTIO_ID_CRYPTO       20 /* virtio crypto */
+#define VIRTIO_ID_IOMMU	    61216 /* virtio IOMMU (temporary) */
 
 #endif /* _LINUX_VIRTIO_IDS_H */
diff --git a/include/standard-headers/linux/virtio_iommu.h b/include/standard-headers/linux/virtio_iommu.h
new file mode 100644
index 0000000..7f486cf
--- /dev/null
+++ b/include/standard-headers/linux/virtio_iommu.h
@@ -0,0 +1,177 @@
+/*
+ * Virtio-iommu definition v0.4
+ *
+ * Copyright (C) 2017 ARM Ltd.
+ *
+ * This header is BSD licensed so anyone can use the definitions
+ * to implement compatible drivers/servers:
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of ARM Ltd. nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL IBM OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#ifndef _LINUX_VIRTIO_IOMMU_H
+#define _LINUX_VIRTIO_IOMMU_H
+
+/* Feature bits */
+#define VIRTIO_IOMMU_F_INPUT_RANGE		0
+#define VIRTIO_IOMMU_F_IOASID_BITS		1
+#define VIRTIO_IOMMU_F_MAP_UNMAP		2
+#define VIRTIO_IOMMU_F_BYPASS			3
+#define VIRTIO_IOMMU_F_PROBE			4
+
+struct virtio_iommu_config {
+	/* Supported page sizes */
+	uint64_t					page_size_mask;
+	struct virtio_iommu_range {
+		uint64_t				start;
+		uint64_t				end;
+	} input_range;
+	uint8_t 					ioasid_bits;
+	uint8_t					padding[3];
+	uint32_t					probe_size;
+} QEMU_PACKED;
+
+/* Request types */
+#define VIRTIO_IOMMU_T_ATTACH			0x01
+#define VIRTIO_IOMMU_T_DETACH			0x02
+#define VIRTIO_IOMMU_T_MAP			0x03
+#define VIRTIO_IOMMU_T_UNMAP			0x04
+#define VIRTIO_IOMMU_T_PROBE			0x05
+
+/* Status types */
+#define VIRTIO_IOMMU_S_OK			0x00
+#define VIRTIO_IOMMU_S_IOERR			0x01
+#define VIRTIO_IOMMU_S_UNSUPP			0x02
+#define VIRTIO_IOMMU_S_DEVERR			0x03
+#define VIRTIO_IOMMU_S_INVAL			0x04
+#define VIRTIO_IOMMU_S_RANGE			0x05
+#define VIRTIO_IOMMU_S_NOENT			0x06
+#define VIRTIO_IOMMU_S_FAULT			0x07
+
+struct virtio_iommu_req_head {
+	uint8_t					type;
+	uint8_t					reserved[3];
+} QEMU_PACKED;
+
+struct virtio_iommu_req_tail {
+	uint8_t					status;
+	uint8_t					reserved[3];
+} QEMU_PACKED;
+
+struct virtio_iommu_req_attach {
+	struct virtio_iommu_req_head		head;
+
+	uint32_t					address_space;
+	uint32_t					device;
+	uint32_t					reserved;
+
+	struct virtio_iommu_req_tail		tail;
+} QEMU_PACKED;
+
+struct virtio_iommu_req_detach {
+	struct virtio_iommu_req_head		head;
+
+	uint32_t					device;
+	uint32_t					reserved;
+
+	struct virtio_iommu_req_tail		tail;
+} QEMU_PACKED;
+
+#define VIRTIO_IOMMU_MAP_F_READ			(1 << 0)
+#define VIRTIO_IOMMU_MAP_F_WRITE		(1 << 1)
+#define VIRTIO_IOMMU_MAP_F_EXEC			(1 << 2)
+
+#define VIRTIO_IOMMU_MAP_F_MASK			(VIRTIO_IOMMU_MAP_F_READ |	\
+						 VIRTIO_IOMMU_MAP_F_WRITE |	\
+						 VIRTIO_IOMMU_MAP_F_EXEC)
+
+struct virtio_iommu_req_map {
+	struct virtio_iommu_req_head		head;
+
+	uint32_t					address_space;
+	uint64_t					virt_addr;
+	uint64_t					phys_addr;
+	uint64_t					size;
+	uint32_t					flags;
+
+	struct virtio_iommu_req_tail		tail;
+} QEMU_PACKED;
+
+QEMU_PACKED
+struct virtio_iommu_req_unmap {
+	struct virtio_iommu_req_head		head;
+
+	uint32_t					address_space;
+	uint64_t					virt_addr;
+	uint64_t					size;
+	uint32_t					reserved;
+
+	struct virtio_iommu_req_tail		tail;
+} QEMU_PACKED;
+
+#define VIRTIO_IOMMU_PROBE_RESV_MEM_T_ABORT	0
+#define VIRTIO_IOMMU_PROBE_RESV_MEM_T_BYPASS	1
+
+#define VIRTIO_IOMMU_PROBE_RESV_MEM_F_MSI	(1 << 0)
+
+struct virtio_iommu_probe_resv_mem {
+	uint8_t					subtype;
+	uint8_t					reserved[3];
+	uint64_t					addr;
+	uint64_t					size;
+	uint32_t					flags;
+} QEMU_PACKED;
+
+#define VIRTIO_IOMMU_PROBE_T_NONE		0
+#define VIRTIO_IOMMU_PROBE_T_RESV_MEM		2
+
+#define VIRTIO_IOMMU_PROBE_T_MASK		0xfff
+
+struct virtio_iommu_probe_property {
+	uint16_t					type;
+	uint16_t					length;
+	uint8_t					value[];
+} QEMU_PACKED;
+
+struct virtio_iommu_req_probe {
+	struct virtio_iommu_req_head		head;
+	uint32_t					device;
+	uint8_t					reserved[64];
+
+	uint8_t					properties[];
+
+	/* Tail follows the variable-length properties array (no padding) */
+} QEMU_PACKED;
+
+union virtio_iommu_req {
+	struct virtio_iommu_req_head		head;
+
+	struct virtio_iommu_req_attach		attach;
+	struct virtio_iommu_req_detach		detach;
+	struct virtio_iommu_req_map		map;
+	struct virtio_iommu_req_unmap		unmap;
+	struct virtio_iommu_req_probe		probe;
+};
+
+#endif
diff --git a/linux-headers/linux/virtio_iommu.h b/linux-headers/linux/virtio_iommu.h
new file mode 100644
index 0000000..2dc4609
--- /dev/null
+++ b/linux-headers/linux/virtio_iommu.h
@@ -0,0 +1 @@
+#include "standard-headers/linux/virtio_iommu.h"
-- 
2.5.5