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authorPeter Maydell <peter.maydell@linaro.org>2015-06-11 15:33:38 +0100
committerPeter Maydell <peter.maydell@linaro.org>2015-06-11 15:33:38 +0100
commitd8e3b729cf452d2689c8669f1ec18158db29fd5a (patch)
treeaccc62ac8989a64ef70291ad1d1ca09f374d71a6 /linux-headers
parentafa25c4bb5bd0732dca4aa0691fd4682d242925f (diff)
parent4ebc736e9938a7e88ecc785734b17145bf802a56 (diff)
downloadqemu-arm-d8e3b729cf452d2689c8669f1ec18158db29fd5a.tar.gz
Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging
pc, acpi, virtio Most notably this includes virtio 1 patches Still not all devices converted, and not fully spec compliant, so disabled by default. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> # gpg: Signature made Thu Jun 11 12:53:08 2015 BST using RSA key ID D28D5469 # gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>" # gpg: aka "Michael S. Tsirkin <mst@redhat.com>" * remotes/mst/tags/for_upstream: (42 commits) i386/acpi-build: fix PXB workarounds for unsupported BIOSes i386/acpi-build: more traditional _UID and _HID for PXB root buses vhost-scsi: move qdev properties into vhost-scsi.c virtio-9p-device: move qdev properties into virtio-9p-device.c virtio-serial-bus: move qdev properties into virtio-serial-bus.c virtio-rng: move qdev properties into virtio-rng.c virtio-scsi: move qdev properties into virtio-scsi.c virtio-net.h: Remove unsed DEFINE_VIRTIO_NET_PROPERTIES virtio-net: move qdev properties into virtio-net.c virtio-input: emulated devices [pci] virtio-input: core code & base class [pci] pci: add PCI_CLASS_INPUT_* virtio-pci: fill VirtIOPCIRegions early. virtio-pci: drop identical virtio_pci_cap virtio-pci: move cap type to VirtIOPCIRegion virtio-pci: move virtio_pci_add_mem_cap call to virtio_pci_modern_region_map virtio-pci: add virtio_pci_modern_region_map() virtio-pci: add virtio_pci_modern_regions_init() virtio-pci: add struct VirtIOPCIRegion for virtio-1 regions virtio-balloon: switch to virtio_add_feature ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'linux-headers')
-rw-r--r--linux-headers/linux/virtio_pci.h192
1 files changed, 192 insertions, 0 deletions
diff --git a/linux-headers/linux/virtio_pci.h b/linux-headers/linux/virtio_pci.h
new file mode 100644
index 0000000000..92624e5310
--- /dev/null
+++ b/linux-headers/linux/virtio_pci.h
@@ -0,0 +1,192 @@
+/*
+ * Virtio PCI driver
+ *
+ * This module allows virtio devices to be used over a virtual PCI device.
+ * This can be used with QEMU based VMMs like KVM or Xen.
+ *
+ * Copyright IBM Corp. 2007
+ *
+ * Authors:
+ * Anthony Liguori <aliguori@us.ibm.com>
+ *
+ * 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 IBM 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_PCI_H
+#define _LINUX_VIRTIO_PCI_H
+
+#include <linux/types.h>
+
+#ifndef VIRTIO_PCI_NO_LEGACY
+
+/* A 32-bit r/o bitmask of the features supported by the host */
+#define VIRTIO_PCI_HOST_FEATURES 0
+
+/* A 32-bit r/w bitmask of features activated by the guest */
+#define VIRTIO_PCI_GUEST_FEATURES 4
+
+/* A 32-bit r/w PFN for the currently selected queue */
+#define VIRTIO_PCI_QUEUE_PFN 8
+
+/* A 16-bit r/o queue size for the currently selected queue */
+#define VIRTIO_PCI_QUEUE_NUM 12
+
+/* A 16-bit r/w queue selector */
+#define VIRTIO_PCI_QUEUE_SEL 14
+
+/* A 16-bit r/w queue notifier */
+#define VIRTIO_PCI_QUEUE_NOTIFY 16
+
+/* An 8-bit device status register. */
+#define VIRTIO_PCI_STATUS 18
+
+/* An 8-bit r/o interrupt status register. Reading the value will return the
+ * current contents of the ISR and will also clear it. This is effectively
+ * a read-and-acknowledge. */
+#define VIRTIO_PCI_ISR 19
+
+/* MSI-X registers: only enabled if MSI-X is enabled. */
+/* A 16-bit vector for configuration changes. */
+#define VIRTIO_MSI_CONFIG_VECTOR 20
+/* A 16-bit vector for selected queue notifications. */
+#define VIRTIO_MSI_QUEUE_VECTOR 22
+
+/* The remaining space is defined by each driver as the per-driver
+ * configuration space */
+#define VIRTIO_PCI_CONFIG_OFF(msix_enabled) ((msix_enabled) ? 24 : 20)
+/* Deprecated: please use VIRTIO_PCI_CONFIG_OFF instead */
+#define VIRTIO_PCI_CONFIG(dev) VIRTIO_PCI_CONFIG_OFF((dev)->msix_enabled)
+
+/* Virtio ABI version, this must match exactly */
+#define VIRTIO_PCI_ABI_VERSION 0
+
+/* How many bits to shift physical queue address written to QUEUE_PFN.
+ * 12 is historical, and due to x86 page size. */
+#define VIRTIO_PCI_QUEUE_ADDR_SHIFT 12
+
+/* The alignment to use between consumer and producer parts of vring.
+ * x86 pagesize again. */
+#define VIRTIO_PCI_VRING_ALIGN 4096
+
+#endif /* VIRTIO_PCI_NO_LEGACY */
+
+/* The bit of the ISR which indicates a device configuration change. */
+#define VIRTIO_PCI_ISR_CONFIG 0x2
+/* Vector value used to disable MSI for queue */
+#define VIRTIO_MSI_NO_VECTOR 0xffff
+
+#ifndef VIRTIO_PCI_NO_MODERN
+
+/* IDs for different capabilities. Must all exist. */
+
+/* Common configuration */
+#define VIRTIO_PCI_CAP_COMMON_CFG 1
+/* Notifications */
+#define VIRTIO_PCI_CAP_NOTIFY_CFG 2
+/* ISR access */
+#define VIRTIO_PCI_CAP_ISR_CFG 3
+/* Device specific confiuration */
+#define VIRTIO_PCI_CAP_DEVICE_CFG 4
+
+/* This is the PCI capability header: */
+struct virtio_pci_cap {
+ __u8 cap_vndr; /* Generic PCI field: PCI_CAP_ID_VNDR */
+ __u8 cap_next; /* Generic PCI field: next ptr. */
+ __u8 cap_len; /* Generic PCI field: capability length */
+ __u8 cfg_type; /* Identifies the structure. */
+ __u8 bar; /* Where to find it. */
+ __u8 padding[3]; /* Pad to full dword. */
+ __le32 offset; /* Offset within bar. */
+ __le32 length; /* Length of the structure, in bytes. */
+};
+
+struct virtio_pci_notify_cap {
+ struct virtio_pci_cap cap;
+ __le32 notify_off_multiplier; /* Multiplier for queue_notify_off. */
+};
+
+/* Fields in VIRTIO_PCI_CAP_COMMON_CFG: */
+struct virtio_pci_common_cfg {
+ /* About the whole device. */
+ __le32 device_feature_select; /* read-write */
+ __le32 device_feature; /* read-only */
+ __le32 guest_feature_select; /* read-write */
+ __le32 guest_feature; /* read-write */
+ __le16 msix_config; /* read-write */
+ __le16 num_queues; /* read-only */
+ __u8 device_status; /* read-write */
+ __u8 config_generation; /* read-only */
+
+ /* About a specific virtqueue. */
+ __le16 queue_select; /* read-write */
+ __le16 queue_size; /* read-write, power of 2. */
+ __le16 queue_msix_vector; /* read-write */
+ __le16 queue_enable; /* read-write */
+ __le16 queue_notify_off; /* read-only */
+ __le32 queue_desc_lo; /* read-write */
+ __le32 queue_desc_hi; /* read-write */
+ __le32 queue_avail_lo; /* read-write */
+ __le32 queue_avail_hi; /* read-write */
+ __le32 queue_used_lo; /* read-write */
+ __le32 queue_used_hi; /* read-write */
+};
+
+/* Macro versions of offsets for the Old Timers! */
+#define VIRTIO_PCI_CAP_VNDR 0
+#define VIRTIO_PCI_CAP_NEXT 1
+#define VIRTIO_PCI_CAP_LEN 2
+#define VIRTIO_PCI_CAP_CFG_TYPE 3
+#define VIRTIO_PCI_CAP_BAR 4
+#define VIRTIO_PCI_CAP_OFFSET 8
+#define VIRTIO_PCI_CAP_LENGTH 12
+
+#define VIRTIO_PCI_NOTIFY_CAP_MULT 16
+
+
+#define VIRTIO_PCI_COMMON_DFSELECT 0
+#define VIRTIO_PCI_COMMON_DF 4
+#define VIRTIO_PCI_COMMON_GFSELECT 8
+#define VIRTIO_PCI_COMMON_GF 12
+#define VIRTIO_PCI_COMMON_MSIX 16
+#define VIRTIO_PCI_COMMON_NUMQ 18
+#define VIRTIO_PCI_COMMON_STATUS 20
+#define VIRTIO_PCI_COMMON_CFGGENERATION 21
+#define VIRTIO_PCI_COMMON_Q_SELECT 22
+#define VIRTIO_PCI_COMMON_Q_SIZE 24
+#define VIRTIO_PCI_COMMON_Q_MSIX 26
+#define VIRTIO_PCI_COMMON_Q_ENABLE 28
+#define VIRTIO_PCI_COMMON_Q_NOFF 30
+#define VIRTIO_PCI_COMMON_Q_DESCLO 32
+#define VIRTIO_PCI_COMMON_Q_DESCHI 36
+#define VIRTIO_PCI_COMMON_Q_AVAILLO 40
+#define VIRTIO_PCI_COMMON_Q_AVAILHI 44
+#define VIRTIO_PCI_COMMON_Q_USEDLO 48
+#define VIRTIO_PCI_COMMON_Q_USEDHI 52
+
+#endif /* VIRTIO_PCI_NO_MODERN */
+
+#endif