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5d4e2d08e7
Here's the driver core, and other driver subsystems, pull request for the 3.5-rc1 merge window. Outside of a few minor driver core changes, we ended up with the following different subsystem and core changes as well, due to interdependancies on the driver core: - hyperv driver updates - drivers/memory being created and some drivers moved into it - extcon driver subsystem created out of the old Android staging switch driver code - dynamic debug updates - printk rework, and /dev/kmsg changes All of this has been tested in the linux-next releases for a few weeks with no reported problems. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.18 (GNU/Linux) iEYEABECAAYFAk+7q28ACgkQMUfUDdst+ykXmwCfcPASzC+/bDkuqdWsqzxlWZ7+ VOQAnAriySv397St36J6Hz5bMQZwB1Yq =SQc+ -----END PGP SIGNATURE----- Merge tag 'driver-core-3.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull driver core updates from Greg Kroah-Hartman: "Here's the driver core, and other driver subsystems, pull request for the 3.5-rc1 merge window. Outside of a few minor driver core changes, we ended up with the following different subsystem and core changes as well, due to interdependancies on the driver core: - hyperv driver updates - drivers/memory being created and some drivers moved into it - extcon driver subsystem created out of the old Android staging switch driver code - dynamic debug updates - printk rework, and /dev/kmsg changes All of this has been tested in the linux-next releases for a few weeks with no reported problems. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>" Fix up conflicts in drivers/extcon/extcon-max8997.c where git noticed that a patch to the deleted drivers/misc/max8997-muic.c driver needs to be applied to this one. * tag 'driver-core-3.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (90 commits) uio_pdrv_genirq: get irq through platform resource if not set otherwise memory: tegra{20,30}-mc: Remove empty *_remove() printk() - isolate KERN_CONT users from ordinary complete lines sysfs: get rid of some lockdep false positives Drivers: hv: util: Properly handle version negotiations. Drivers: hv: Get rid of an unnecessary check in vmbus_prep_negotiate_resp() memory: tegra{20,30}-mc: Use dev_err_ratelimited() driver core: Add dev_*_ratelimited() family Driver Core: don't oops with unregistered driver in driver_find_device() printk() - restore prefix/timestamp printing for multi-newline strings printk: add stub for prepend_timestamp() ARM: tegra30: Make MC optional in Kconfig ARM: tegra20: Make MC optional in Kconfig ARM: tegra30: MC: Remove unnecessary BUG*() ARM: tegra20: MC: Remove unnecessary BUG*() printk: correctly align __log_buf ARM: tegra30: Add Tegra Memory Controller(MC) driver ARM: tegra20: Add Tegra Memory Controller(MC) driver printk() - restore timestamp printing at console output printk() - do not merge continuation lines of different threads ...
1076 lines
27 KiB
C
1076 lines
27 KiB
C
/*
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*
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* Copyright (c) 2011, Microsoft Corporation.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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* Place - Suite 330, Boston, MA 02111-1307 USA.
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*
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* Authors:
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* Haiyang Zhang <haiyangz@microsoft.com>
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* Hank Janssen <hjanssen@microsoft.com>
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* K. Y. Srinivasan <kys@microsoft.com>
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*
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*/
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#ifndef _HYPERV_H
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#define _HYPERV_H
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#include <linux/types.h>
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/*
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* An implementation of HyperV key value pair (KVP) functionality for Linux.
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*
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*
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* Copyright (C) 2010, Novell, Inc.
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* Author : K. Y. Srinivasan <ksrinivasan@novell.com>
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*
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*/
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/*
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* Maximum value size - used for both key names and value data, and includes
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* any applicable NULL terminators.
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*
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* Note: This limit is somewhat arbitrary, but falls easily within what is
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* supported for all native guests (back to Win 2000) and what is reasonable
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* for the IC KVP exchange functionality. Note that Windows Me/98/95 are
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* limited to 255 character key names.
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*
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* MSDN recommends not storing data values larger than 2048 bytes in the
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* registry.
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*
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* Note: This value is used in defining the KVP exchange message - this value
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* cannot be modified without affecting the message size and compatibility.
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*/
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/*
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* bytes, including any null terminators
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*/
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#define HV_KVP_EXCHANGE_MAX_VALUE_SIZE (2048)
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/*
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* Maximum key size - the registry limit for the length of an entry name
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* is 256 characters, including the null terminator
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*/
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#define HV_KVP_EXCHANGE_MAX_KEY_SIZE (512)
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/*
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* In Linux, we implement the KVP functionality in two components:
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* 1) The kernel component which is packaged as part of the hv_utils driver
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* is responsible for communicating with the host and responsible for
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* implementing the host/guest protocol. 2) A user level daemon that is
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* responsible for data gathering.
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*
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* Host/Guest Protocol: The host iterates over an index and expects the guest
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* to assign a key name to the index and also return the value corresponding to
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* the key. The host will have atmost one KVP transaction outstanding at any
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* given point in time. The host side iteration stops when the guest returns
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* an error. Microsoft has specified the following mapping of key names to
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* host specified index:
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*
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* Index Key Name
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* 0 FullyQualifiedDomainName
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* 1 IntegrationServicesVersion
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* 2 NetworkAddressIPv4
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* 3 NetworkAddressIPv6
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* 4 OSBuildNumber
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* 5 OSName
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* 6 OSMajorVersion
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* 7 OSMinorVersion
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* 8 OSVersion
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* 9 ProcessorArchitecture
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*
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* The Windows host expects the Key Name and Key Value to be encoded in utf16.
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*
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* Guest Kernel/KVP Daemon Protocol: As noted earlier, we implement all of the
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* data gathering functionality in a user mode daemon. The user level daemon
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* is also responsible for binding the key name to the index as well. The
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* kernel and user-level daemon communicate using a connector channel.
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*
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* The user mode component first registers with the
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* the kernel component. Subsequently, the kernel component requests, data
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* for the specified keys. In response to this message the user mode component
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* fills in the value corresponding to the specified key. We overload the
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* sequence field in the cn_msg header to define our KVP message types.
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*
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*
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* The kernel component simply acts as a conduit for communication between the
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* Windows host and the user-level daemon. The kernel component passes up the
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* index received from the Host to the user-level daemon. If the index is
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* valid (supported), the corresponding key as well as its
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* value (both are strings) is returned. If the index is invalid
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* (not supported), a NULL key string is returned.
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*/
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/*
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* Registry value types.
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*/
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#define REG_SZ 1
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#define REG_U32 4
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#define REG_U64 8
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enum hv_kvp_exchg_op {
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KVP_OP_GET = 0,
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KVP_OP_SET,
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KVP_OP_DELETE,
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KVP_OP_ENUMERATE,
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KVP_OP_REGISTER,
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KVP_OP_COUNT /* Number of operations, must be last. */
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};
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enum hv_kvp_exchg_pool {
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KVP_POOL_EXTERNAL = 0,
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KVP_POOL_GUEST,
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KVP_POOL_AUTO,
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KVP_POOL_AUTO_EXTERNAL,
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KVP_POOL_AUTO_INTERNAL,
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KVP_POOL_COUNT /* Number of pools, must be last. */
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};
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struct hv_kvp_hdr {
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__u8 operation;
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__u8 pool;
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__u16 pad;
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} __attribute__((packed));
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struct hv_kvp_exchg_msg_value {
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__u32 value_type;
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__u32 key_size;
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__u32 value_size;
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__u8 key[HV_KVP_EXCHANGE_MAX_KEY_SIZE];
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union {
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__u8 value[HV_KVP_EXCHANGE_MAX_VALUE_SIZE];
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__u32 value_u32;
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__u64 value_u64;
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};
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} __attribute__((packed));
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struct hv_kvp_msg_enumerate {
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__u32 index;
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struct hv_kvp_exchg_msg_value data;
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} __attribute__((packed));
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struct hv_kvp_msg_get {
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struct hv_kvp_exchg_msg_value data;
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};
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struct hv_kvp_msg_set {
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struct hv_kvp_exchg_msg_value data;
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};
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struct hv_kvp_msg_delete {
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__u32 key_size;
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__u8 key[HV_KVP_EXCHANGE_MAX_KEY_SIZE];
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};
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struct hv_kvp_register {
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__u8 version[HV_KVP_EXCHANGE_MAX_KEY_SIZE];
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};
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struct hv_kvp_msg {
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struct hv_kvp_hdr kvp_hdr;
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union {
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struct hv_kvp_msg_get kvp_get;
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struct hv_kvp_msg_set kvp_set;
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struct hv_kvp_msg_delete kvp_delete;
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struct hv_kvp_msg_enumerate kvp_enum_data;
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struct hv_kvp_register kvp_register;
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} body;
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} __attribute__((packed));
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#ifdef __KERNEL__
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#include <linux/scatterlist.h>
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#include <linux/list.h>
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#include <linux/uuid.h>
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#include <linux/timer.h>
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#include <linux/workqueue.h>
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#include <linux/completion.h>
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#include <linux/device.h>
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#include <linux/mod_devicetable.h>
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#define MAX_PAGE_BUFFER_COUNT 19
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#define MAX_MULTIPAGE_BUFFER_COUNT 32 /* 128K */
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#pragma pack(push, 1)
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/* Single-page buffer */
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struct hv_page_buffer {
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u32 len;
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u32 offset;
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u64 pfn;
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};
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/* Multiple-page buffer */
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struct hv_multipage_buffer {
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/* Length and Offset determines the # of pfns in the array */
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u32 len;
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u32 offset;
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u64 pfn_array[MAX_MULTIPAGE_BUFFER_COUNT];
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};
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/* 0x18 includes the proprietary packet header */
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#define MAX_PAGE_BUFFER_PACKET (0x18 + \
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(sizeof(struct hv_page_buffer) * \
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MAX_PAGE_BUFFER_COUNT))
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#define MAX_MULTIPAGE_BUFFER_PACKET (0x18 + \
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sizeof(struct hv_multipage_buffer))
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#pragma pack(pop)
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struct hv_ring_buffer {
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/* Offset in bytes from the start of ring data below */
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u32 write_index;
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/* Offset in bytes from the start of ring data below */
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u32 read_index;
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u32 interrupt_mask;
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/* Pad it to PAGE_SIZE so that data starts on page boundary */
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u8 reserved[4084];
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/* NOTE:
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* The interrupt_mask field is used only for channels but since our
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* vmbus connection also uses this data structure and its data starts
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* here, we commented out this field.
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*/
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/*
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* Ring data starts here + RingDataStartOffset
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* !!! DO NOT place any fields below this !!!
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*/
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u8 buffer[0];
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} __packed;
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struct hv_ring_buffer_info {
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struct hv_ring_buffer *ring_buffer;
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u32 ring_size; /* Include the shared header */
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spinlock_t ring_lock;
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u32 ring_datasize; /* < ring_size */
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u32 ring_data_startoffset;
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};
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struct hv_ring_buffer_debug_info {
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u32 current_interrupt_mask;
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u32 current_read_index;
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u32 current_write_index;
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u32 bytes_avail_toread;
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u32 bytes_avail_towrite;
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};
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/*
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*
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* hv_get_ringbuffer_availbytes()
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*
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* Get number of bytes available to read and to write to
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* for the specified ring buffer
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*/
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static inline void
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hv_get_ringbuffer_availbytes(struct hv_ring_buffer_info *rbi,
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u32 *read, u32 *write)
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{
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u32 read_loc, write_loc, dsize;
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smp_read_barrier_depends();
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/* Capture the read/write indices before they changed */
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read_loc = rbi->ring_buffer->read_index;
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write_loc = rbi->ring_buffer->write_index;
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dsize = rbi->ring_datasize;
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*write = write_loc >= read_loc ? dsize - (write_loc - read_loc) :
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read_loc - write_loc;
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*read = dsize - *write;
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}
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/*
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* We use the same version numbering for all Hyper-V modules.
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*
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* Definition of versioning is as follows;
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*
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* Major Number Changes for these scenarios;
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* 1. When a new version of Windows Hyper-V
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* is released.
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* 2. A Major change has occurred in the
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* Linux IC's.
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* (For example the merge for the first time
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* into the kernel) Every time the Major Number
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* changes, the Revision number is reset to 0.
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* Minor Number Changes when new functionality is added
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* to the Linux IC's that is not a bug fix.
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*
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* 3.1 - Added completed hv_utils driver. Shutdown/Heartbeat/Timesync
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*/
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#define HV_DRV_VERSION "3.1"
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/*
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* A revision number of vmbus that is used for ensuring both ends on a
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* partition are using compatible versions.
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*/
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#define VMBUS_REVISION_NUMBER 13
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/* Make maximum size of pipe payload of 16K */
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#define MAX_PIPE_DATA_PAYLOAD (sizeof(u8) * 16384)
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/* Define PipeMode values. */
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#define VMBUS_PIPE_TYPE_BYTE 0x00000000
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#define VMBUS_PIPE_TYPE_MESSAGE 0x00000004
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/* The size of the user defined data buffer for non-pipe offers. */
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#define MAX_USER_DEFINED_BYTES 120
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/* The size of the user defined data buffer for pipe offers. */
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#define MAX_PIPE_USER_DEFINED_BYTES 116
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/*
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* At the center of the Channel Management library is the Channel Offer. This
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* struct contains the fundamental information about an offer.
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*/
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struct vmbus_channel_offer {
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uuid_le if_type;
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uuid_le if_instance;
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u64 int_latency; /* in 100ns units */
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u32 if_revision;
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u32 server_ctx_size; /* in bytes */
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u16 chn_flags;
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u16 mmio_megabytes; /* in bytes * 1024 * 1024 */
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union {
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/* Non-pipes: The user has MAX_USER_DEFINED_BYTES bytes. */
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struct {
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unsigned char user_def[MAX_USER_DEFINED_BYTES];
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} std;
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/*
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* Pipes:
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* The following sructure is an integrated pipe protocol, which
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* is implemented on top of standard user-defined data. Pipe
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* clients have MAX_PIPE_USER_DEFINED_BYTES left for their own
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* use.
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*/
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struct {
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u32 pipe_mode;
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unsigned char user_def[MAX_PIPE_USER_DEFINED_BYTES];
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} pipe;
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} u;
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u32 padding;
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} __packed;
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/* Server Flags */
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#define VMBUS_CHANNEL_ENUMERATE_DEVICE_INTERFACE 1
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#define VMBUS_CHANNEL_SERVER_SUPPORTS_TRANSFER_PAGES 2
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#define VMBUS_CHANNEL_SERVER_SUPPORTS_GPADLS 4
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#define VMBUS_CHANNEL_NAMED_PIPE_MODE 0x10
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#define VMBUS_CHANNEL_LOOPBACK_OFFER 0x100
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#define VMBUS_CHANNEL_PARENT_OFFER 0x200
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#define VMBUS_CHANNEL_REQUEST_MONITORED_NOTIFICATION 0x400
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struct vmpacket_descriptor {
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u16 type;
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u16 offset8;
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u16 len8;
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u16 flags;
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u64 trans_id;
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} __packed;
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struct vmpacket_header {
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u32 prev_pkt_start_offset;
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struct vmpacket_descriptor descriptor;
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} __packed;
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struct vmtransfer_page_range {
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u32 byte_count;
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u32 byte_offset;
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} __packed;
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struct vmtransfer_page_packet_header {
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struct vmpacket_descriptor d;
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u16 xfer_pageset_id;
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bool sender_owns_set;
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u8 reserved;
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u32 range_cnt;
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struct vmtransfer_page_range ranges[1];
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} __packed;
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struct vmgpadl_packet_header {
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struct vmpacket_descriptor d;
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u32 gpadl;
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u32 reserved;
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} __packed;
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struct vmadd_remove_transfer_page_set {
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struct vmpacket_descriptor d;
|
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u32 gpadl;
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u16 xfer_pageset_id;
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u16 reserved;
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} __packed;
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|
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/*
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* This structure defines a range in guest physical space that can be made to
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* look virtually contiguous.
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*/
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struct gpa_range {
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u32 byte_count;
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u32 byte_offset;
|
|
u64 pfn_array[0];
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};
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|
|
|
/*
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|
* This is the format for an Establish Gpadl packet, which contains a handle by
|
|
* which this GPADL will be known and a set of GPA ranges associated with it.
|
|
* This can be converted to a MDL by the guest OS. If there are multiple GPA
|
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* ranges, then the resulting MDL will be "chained," representing multiple VA
|
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* ranges.
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|
*/
|
|
struct vmestablish_gpadl {
|
|
struct vmpacket_descriptor d;
|
|
u32 gpadl;
|
|
u32 range_cnt;
|
|
struct gpa_range range[1];
|
|
} __packed;
|
|
|
|
/*
|
|
* This is the format for a Teardown Gpadl packet, which indicates that the
|
|
* GPADL handle in the Establish Gpadl packet will never be referenced again.
|
|
*/
|
|
struct vmteardown_gpadl {
|
|
struct vmpacket_descriptor d;
|
|
u32 gpadl;
|
|
u32 reserved; /* for alignment to a 8-byte boundary */
|
|
} __packed;
|
|
|
|
/*
|
|
* This is the format for a GPA-Direct packet, which contains a set of GPA
|
|
* ranges, in addition to commands and/or data.
|
|
*/
|
|
struct vmdata_gpa_direct {
|
|
struct vmpacket_descriptor d;
|
|
u32 reserved;
|
|
u32 range_cnt;
|
|
struct gpa_range range[1];
|
|
} __packed;
|
|
|
|
/* This is the format for a Additional Data Packet. */
|
|
struct vmadditional_data {
|
|
struct vmpacket_descriptor d;
|
|
u64 total_bytes;
|
|
u32 offset;
|
|
u32 byte_cnt;
|
|
unsigned char data[1];
|
|
} __packed;
|
|
|
|
union vmpacket_largest_possible_header {
|
|
struct vmpacket_descriptor simple_hdr;
|
|
struct vmtransfer_page_packet_header xfer_page_hdr;
|
|
struct vmgpadl_packet_header gpadl_hdr;
|
|
struct vmadd_remove_transfer_page_set add_rm_xfer_page_hdr;
|
|
struct vmestablish_gpadl establish_gpadl_hdr;
|
|
struct vmteardown_gpadl teardown_gpadl_hdr;
|
|
struct vmdata_gpa_direct data_gpa_direct_hdr;
|
|
};
|
|
|
|
#define VMPACKET_DATA_START_ADDRESS(__packet) \
|
|
(void *)(((unsigned char *)__packet) + \
|
|
((struct vmpacket_descriptor)__packet)->offset8 * 8)
|
|
|
|
#define VMPACKET_DATA_LENGTH(__packet) \
|
|
((((struct vmpacket_descriptor)__packet)->len8 - \
|
|
((struct vmpacket_descriptor)__packet)->offset8) * 8)
|
|
|
|
#define VMPACKET_TRANSFER_MODE(__packet) \
|
|
(((struct IMPACT)__packet)->type)
|
|
|
|
enum vmbus_packet_type {
|
|
VM_PKT_INVALID = 0x0,
|
|
VM_PKT_SYNCH = 0x1,
|
|
VM_PKT_ADD_XFER_PAGESET = 0x2,
|
|
VM_PKT_RM_XFER_PAGESET = 0x3,
|
|
VM_PKT_ESTABLISH_GPADL = 0x4,
|
|
VM_PKT_TEARDOWN_GPADL = 0x5,
|
|
VM_PKT_DATA_INBAND = 0x6,
|
|
VM_PKT_DATA_USING_XFER_PAGES = 0x7,
|
|
VM_PKT_DATA_USING_GPADL = 0x8,
|
|
VM_PKT_DATA_USING_GPA_DIRECT = 0x9,
|
|
VM_PKT_CANCEL_REQUEST = 0xa,
|
|
VM_PKT_COMP = 0xb,
|
|
VM_PKT_DATA_USING_ADDITIONAL_PKT = 0xc,
|
|
VM_PKT_ADDITIONAL_DATA = 0xd
|
|
};
|
|
|
|
#define VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED 1
|
|
|
|
|
|
/* Version 1 messages */
|
|
enum vmbus_channel_message_type {
|
|
CHANNELMSG_INVALID = 0,
|
|
CHANNELMSG_OFFERCHANNEL = 1,
|
|
CHANNELMSG_RESCIND_CHANNELOFFER = 2,
|
|
CHANNELMSG_REQUESTOFFERS = 3,
|
|
CHANNELMSG_ALLOFFERS_DELIVERED = 4,
|
|
CHANNELMSG_OPENCHANNEL = 5,
|
|
CHANNELMSG_OPENCHANNEL_RESULT = 6,
|
|
CHANNELMSG_CLOSECHANNEL = 7,
|
|
CHANNELMSG_GPADL_HEADER = 8,
|
|
CHANNELMSG_GPADL_BODY = 9,
|
|
CHANNELMSG_GPADL_CREATED = 10,
|
|
CHANNELMSG_GPADL_TEARDOWN = 11,
|
|
CHANNELMSG_GPADL_TORNDOWN = 12,
|
|
CHANNELMSG_RELID_RELEASED = 13,
|
|
CHANNELMSG_INITIATE_CONTACT = 14,
|
|
CHANNELMSG_VERSION_RESPONSE = 15,
|
|
CHANNELMSG_UNLOAD = 16,
|
|
#ifdef VMBUS_FEATURE_PARENT_OR_PEER_MEMORY_MAPPED_INTO_A_CHILD
|
|
CHANNELMSG_VIEWRANGE_ADD = 17,
|
|
CHANNELMSG_VIEWRANGE_REMOVE = 18,
|
|
#endif
|
|
CHANNELMSG_COUNT
|
|
};
|
|
|
|
struct vmbus_channel_message_header {
|
|
enum vmbus_channel_message_type msgtype;
|
|
u32 padding;
|
|
} __packed;
|
|
|
|
/* Query VMBus Version parameters */
|
|
struct vmbus_channel_query_vmbus_version {
|
|
struct vmbus_channel_message_header header;
|
|
u32 version;
|
|
} __packed;
|
|
|
|
/* VMBus Version Supported parameters */
|
|
struct vmbus_channel_version_supported {
|
|
struct vmbus_channel_message_header header;
|
|
bool version_supported;
|
|
} __packed;
|
|
|
|
/* Offer Channel parameters */
|
|
struct vmbus_channel_offer_channel {
|
|
struct vmbus_channel_message_header header;
|
|
struct vmbus_channel_offer offer;
|
|
u32 child_relid;
|
|
u8 monitorid;
|
|
bool monitor_allocated;
|
|
} __packed;
|
|
|
|
/* Rescind Offer parameters */
|
|
struct vmbus_channel_rescind_offer {
|
|
struct vmbus_channel_message_header header;
|
|
u32 child_relid;
|
|
} __packed;
|
|
|
|
/*
|
|
* Request Offer -- no parameters, SynIC message contains the partition ID
|
|
* Set Snoop -- no parameters, SynIC message contains the partition ID
|
|
* Clear Snoop -- no parameters, SynIC message contains the partition ID
|
|
* All Offers Delivered -- no parameters, SynIC message contains the partition
|
|
* ID
|
|
* Flush Client -- no parameters, SynIC message contains the partition ID
|
|
*/
|
|
|
|
/* Open Channel parameters */
|
|
struct vmbus_channel_open_channel {
|
|
struct vmbus_channel_message_header header;
|
|
|
|
/* Identifies the specific VMBus channel that is being opened. */
|
|
u32 child_relid;
|
|
|
|
/* ID making a particular open request at a channel offer unique. */
|
|
u32 openid;
|
|
|
|
/* GPADL for the channel's ring buffer. */
|
|
u32 ringbuffer_gpadlhandle;
|
|
|
|
/* GPADL for the channel's server context save area. */
|
|
u32 server_contextarea_gpadlhandle;
|
|
|
|
/*
|
|
* The upstream ring buffer begins at offset zero in the memory
|
|
* described by RingBufferGpadlHandle. The downstream ring buffer
|
|
* follows it at this offset (in pages).
|
|
*/
|
|
u32 downstream_ringbuffer_pageoffset;
|
|
|
|
/* User-specific data to be passed along to the server endpoint. */
|
|
unsigned char userdata[MAX_USER_DEFINED_BYTES];
|
|
} __packed;
|
|
|
|
/* Open Channel Result parameters */
|
|
struct vmbus_channel_open_result {
|
|
struct vmbus_channel_message_header header;
|
|
u32 child_relid;
|
|
u32 openid;
|
|
u32 status;
|
|
} __packed;
|
|
|
|
/* Close channel parameters; */
|
|
struct vmbus_channel_close_channel {
|
|
struct vmbus_channel_message_header header;
|
|
u32 child_relid;
|
|
} __packed;
|
|
|
|
/* Channel Message GPADL */
|
|
#define GPADL_TYPE_RING_BUFFER 1
|
|
#define GPADL_TYPE_SERVER_SAVE_AREA 2
|
|
#define GPADL_TYPE_TRANSACTION 8
|
|
|
|
/*
|
|
* The number of PFNs in a GPADL message is defined by the number of
|
|
* pages that would be spanned by ByteCount and ByteOffset. If the
|
|
* implied number of PFNs won't fit in this packet, there will be a
|
|
* follow-up packet that contains more.
|
|
*/
|
|
struct vmbus_channel_gpadl_header {
|
|
struct vmbus_channel_message_header header;
|
|
u32 child_relid;
|
|
u32 gpadl;
|
|
u16 range_buflen;
|
|
u16 rangecount;
|
|
struct gpa_range range[0];
|
|
} __packed;
|
|
|
|
/* This is the followup packet that contains more PFNs. */
|
|
struct vmbus_channel_gpadl_body {
|
|
struct vmbus_channel_message_header header;
|
|
u32 msgnumber;
|
|
u32 gpadl;
|
|
u64 pfn[0];
|
|
} __packed;
|
|
|
|
struct vmbus_channel_gpadl_created {
|
|
struct vmbus_channel_message_header header;
|
|
u32 child_relid;
|
|
u32 gpadl;
|
|
u32 creation_status;
|
|
} __packed;
|
|
|
|
struct vmbus_channel_gpadl_teardown {
|
|
struct vmbus_channel_message_header header;
|
|
u32 child_relid;
|
|
u32 gpadl;
|
|
} __packed;
|
|
|
|
struct vmbus_channel_gpadl_torndown {
|
|
struct vmbus_channel_message_header header;
|
|
u32 gpadl;
|
|
} __packed;
|
|
|
|
#ifdef VMBUS_FEATURE_PARENT_OR_PEER_MEMORY_MAPPED_INTO_A_CHILD
|
|
struct vmbus_channel_view_range_add {
|
|
struct vmbus_channel_message_header header;
|
|
PHYSICAL_ADDRESS viewrange_base;
|
|
u64 viewrange_length;
|
|
u32 child_relid;
|
|
} __packed;
|
|
|
|
struct vmbus_channel_view_range_remove {
|
|
struct vmbus_channel_message_header header;
|
|
PHYSICAL_ADDRESS viewrange_base;
|
|
u32 child_relid;
|
|
} __packed;
|
|
#endif
|
|
|
|
struct vmbus_channel_relid_released {
|
|
struct vmbus_channel_message_header header;
|
|
u32 child_relid;
|
|
} __packed;
|
|
|
|
struct vmbus_channel_initiate_contact {
|
|
struct vmbus_channel_message_header header;
|
|
u32 vmbus_version_requested;
|
|
u32 padding2;
|
|
u64 interrupt_page;
|
|
u64 monitor_page1;
|
|
u64 monitor_page2;
|
|
} __packed;
|
|
|
|
struct vmbus_channel_version_response {
|
|
struct vmbus_channel_message_header header;
|
|
bool version_supported;
|
|
} __packed;
|
|
|
|
enum vmbus_channel_state {
|
|
CHANNEL_OFFER_STATE,
|
|
CHANNEL_OPENING_STATE,
|
|
CHANNEL_OPEN_STATE,
|
|
};
|
|
|
|
struct vmbus_channel_debug_info {
|
|
u32 relid;
|
|
enum vmbus_channel_state state;
|
|
uuid_le interfacetype;
|
|
uuid_le interface_instance;
|
|
u32 monitorid;
|
|
u32 servermonitor_pending;
|
|
u32 servermonitor_latency;
|
|
u32 servermonitor_connectionid;
|
|
u32 clientmonitor_pending;
|
|
u32 clientmonitor_latency;
|
|
u32 clientmonitor_connectionid;
|
|
|
|
struct hv_ring_buffer_debug_info inbound;
|
|
struct hv_ring_buffer_debug_info outbound;
|
|
};
|
|
|
|
/*
|
|
* Represents each channel msg on the vmbus connection This is a
|
|
* variable-size data structure depending on the msg type itself
|
|
*/
|
|
struct vmbus_channel_msginfo {
|
|
/* Bookkeeping stuff */
|
|
struct list_head msglistentry;
|
|
|
|
/* So far, this is only used to handle gpadl body message */
|
|
struct list_head submsglist;
|
|
|
|
/* Synchronize the request/response if needed */
|
|
struct completion waitevent;
|
|
union {
|
|
struct vmbus_channel_version_supported version_supported;
|
|
struct vmbus_channel_open_result open_result;
|
|
struct vmbus_channel_gpadl_torndown gpadl_torndown;
|
|
struct vmbus_channel_gpadl_created gpadl_created;
|
|
struct vmbus_channel_version_response version_response;
|
|
} response;
|
|
|
|
u32 msgsize;
|
|
/*
|
|
* The channel message that goes out on the "wire".
|
|
* It will contain at minimum the VMBUS_CHANNEL_MESSAGE_HEADER header
|
|
*/
|
|
unsigned char msg[0];
|
|
};
|
|
|
|
struct vmbus_close_msg {
|
|
struct vmbus_channel_msginfo info;
|
|
struct vmbus_channel_close_channel msg;
|
|
};
|
|
|
|
struct vmbus_channel {
|
|
struct list_head listentry;
|
|
|
|
struct hv_device *device_obj;
|
|
|
|
struct work_struct work;
|
|
|
|
enum vmbus_channel_state state;
|
|
|
|
struct vmbus_channel_offer_channel offermsg;
|
|
/*
|
|
* These are based on the OfferMsg.MonitorId.
|
|
* Save it here for easy access.
|
|
*/
|
|
u8 monitor_grp;
|
|
u8 monitor_bit;
|
|
|
|
u32 ringbuffer_gpadlhandle;
|
|
|
|
/* Allocated memory for ring buffer */
|
|
void *ringbuffer_pages;
|
|
u32 ringbuffer_pagecount;
|
|
struct hv_ring_buffer_info outbound; /* send to parent */
|
|
struct hv_ring_buffer_info inbound; /* receive from parent */
|
|
spinlock_t inbound_lock;
|
|
struct workqueue_struct *controlwq;
|
|
|
|
struct vmbus_close_msg close_msg;
|
|
|
|
/* Channel callback are invoked in this workqueue context */
|
|
/* HANDLE dataWorkQueue; */
|
|
|
|
void (*onchannel_callback)(void *context);
|
|
void *channel_callback_context;
|
|
};
|
|
|
|
void vmbus_onmessage(void *context);
|
|
|
|
int vmbus_request_offers(void);
|
|
|
|
/* The format must be the same as struct vmdata_gpa_direct */
|
|
struct vmbus_channel_packet_page_buffer {
|
|
u16 type;
|
|
u16 dataoffset8;
|
|
u16 length8;
|
|
u16 flags;
|
|
u64 transactionid;
|
|
u32 reserved;
|
|
u32 rangecount;
|
|
struct hv_page_buffer range[MAX_PAGE_BUFFER_COUNT];
|
|
} __packed;
|
|
|
|
/* The format must be the same as struct vmdata_gpa_direct */
|
|
struct vmbus_channel_packet_multipage_buffer {
|
|
u16 type;
|
|
u16 dataoffset8;
|
|
u16 length8;
|
|
u16 flags;
|
|
u64 transactionid;
|
|
u32 reserved;
|
|
u32 rangecount; /* Always 1 in this case */
|
|
struct hv_multipage_buffer range;
|
|
} __packed;
|
|
|
|
|
|
extern int vmbus_open(struct vmbus_channel *channel,
|
|
u32 send_ringbuffersize,
|
|
u32 recv_ringbuffersize,
|
|
void *userdata,
|
|
u32 userdatalen,
|
|
void(*onchannel_callback)(void *context),
|
|
void *context);
|
|
|
|
extern void vmbus_close(struct vmbus_channel *channel);
|
|
|
|
extern int vmbus_sendpacket(struct vmbus_channel *channel,
|
|
const void *buffer,
|
|
u32 bufferLen,
|
|
u64 requestid,
|
|
enum vmbus_packet_type type,
|
|
u32 flags);
|
|
|
|
extern int vmbus_sendpacket_pagebuffer(struct vmbus_channel *channel,
|
|
struct hv_page_buffer pagebuffers[],
|
|
u32 pagecount,
|
|
void *buffer,
|
|
u32 bufferlen,
|
|
u64 requestid);
|
|
|
|
extern int vmbus_sendpacket_multipagebuffer(struct vmbus_channel *channel,
|
|
struct hv_multipage_buffer *mpb,
|
|
void *buffer,
|
|
u32 bufferlen,
|
|
u64 requestid);
|
|
|
|
extern int vmbus_establish_gpadl(struct vmbus_channel *channel,
|
|
void *kbuffer,
|
|
u32 size,
|
|
u32 *gpadl_handle);
|
|
|
|
extern int vmbus_teardown_gpadl(struct vmbus_channel *channel,
|
|
u32 gpadl_handle);
|
|
|
|
extern int vmbus_recvpacket(struct vmbus_channel *channel,
|
|
void *buffer,
|
|
u32 bufferlen,
|
|
u32 *buffer_actual_len,
|
|
u64 *requestid);
|
|
|
|
extern int vmbus_recvpacket_raw(struct vmbus_channel *channel,
|
|
void *buffer,
|
|
u32 bufferlen,
|
|
u32 *buffer_actual_len,
|
|
u64 *requestid);
|
|
|
|
|
|
extern void vmbus_get_debug_info(struct vmbus_channel *channel,
|
|
struct vmbus_channel_debug_info *debug);
|
|
|
|
extern void vmbus_ontimer(unsigned long data);
|
|
|
|
struct hv_dev_port_info {
|
|
u32 int_mask;
|
|
u32 read_idx;
|
|
u32 write_idx;
|
|
u32 bytes_avail_toread;
|
|
u32 bytes_avail_towrite;
|
|
};
|
|
|
|
/* Base driver object */
|
|
struct hv_driver {
|
|
const char *name;
|
|
|
|
/* the device type supported by this driver */
|
|
uuid_le dev_type;
|
|
const struct hv_vmbus_device_id *id_table;
|
|
|
|
struct device_driver driver;
|
|
|
|
int (*probe)(struct hv_device *, const struct hv_vmbus_device_id *);
|
|
int (*remove)(struct hv_device *);
|
|
void (*shutdown)(struct hv_device *);
|
|
|
|
};
|
|
|
|
/* Base device object */
|
|
struct hv_device {
|
|
/* the device type id of this device */
|
|
uuid_le dev_type;
|
|
|
|
/* the device instance id of this device */
|
|
uuid_le dev_instance;
|
|
|
|
struct device device;
|
|
|
|
struct vmbus_channel *channel;
|
|
};
|
|
|
|
|
|
static inline struct hv_device *device_to_hv_device(struct device *d)
|
|
{
|
|
return container_of(d, struct hv_device, device);
|
|
}
|
|
|
|
static inline struct hv_driver *drv_to_hv_drv(struct device_driver *d)
|
|
{
|
|
return container_of(d, struct hv_driver, driver);
|
|
}
|
|
|
|
static inline void hv_set_drvdata(struct hv_device *dev, void *data)
|
|
{
|
|
dev_set_drvdata(&dev->device, data);
|
|
}
|
|
|
|
static inline void *hv_get_drvdata(struct hv_device *dev)
|
|
{
|
|
return dev_get_drvdata(&dev->device);
|
|
}
|
|
|
|
/* Vmbus interface */
|
|
#define vmbus_driver_register(driver) \
|
|
__vmbus_driver_register(driver, THIS_MODULE, KBUILD_MODNAME)
|
|
int __must_check __vmbus_driver_register(struct hv_driver *hv_driver,
|
|
struct module *owner,
|
|
const char *mod_name);
|
|
void vmbus_driver_unregister(struct hv_driver *hv_driver);
|
|
|
|
/**
|
|
* VMBUS_DEVICE - macro used to describe a specific hyperv vmbus device
|
|
*
|
|
* This macro is used to create a struct hv_vmbus_device_id that matches a
|
|
* specific device.
|
|
*/
|
|
#define VMBUS_DEVICE(g0, g1, g2, g3, g4, g5, g6, g7, \
|
|
g8, g9, ga, gb, gc, gd, ge, gf) \
|
|
.guid = { g0, g1, g2, g3, g4, g5, g6, g7, \
|
|
g8, g9, ga, gb, gc, gd, ge, gf },
|
|
|
|
/*
|
|
* Common header for Hyper-V ICs
|
|
*/
|
|
|
|
#define ICMSGTYPE_NEGOTIATE 0
|
|
#define ICMSGTYPE_HEARTBEAT 1
|
|
#define ICMSGTYPE_KVPEXCHANGE 2
|
|
#define ICMSGTYPE_SHUTDOWN 3
|
|
#define ICMSGTYPE_TIMESYNC 4
|
|
#define ICMSGTYPE_VSS 5
|
|
|
|
#define ICMSGHDRFLAG_TRANSACTION 1
|
|
#define ICMSGHDRFLAG_REQUEST 2
|
|
#define ICMSGHDRFLAG_RESPONSE 4
|
|
|
|
#define HV_S_OK 0x00000000
|
|
#define HV_E_FAIL 0x80004005
|
|
#define HV_S_CONT 0x80070103
|
|
#define HV_ERROR_NOT_SUPPORTED 0x80070032
|
|
#define HV_ERROR_MACHINE_LOCKED 0x800704F7
|
|
|
|
/*
|
|
* While we want to handle util services as regular devices,
|
|
* there is only one instance of each of these services; so
|
|
* we statically allocate the service specific state.
|
|
*/
|
|
|
|
struct hv_util_service {
|
|
u8 *recv_buffer;
|
|
void (*util_cb)(void *);
|
|
int (*util_init)(struct hv_util_service *);
|
|
void (*util_deinit)(void);
|
|
};
|
|
|
|
struct vmbuspipe_hdr {
|
|
u32 flags;
|
|
u32 msgsize;
|
|
} __packed;
|
|
|
|
struct ic_version {
|
|
u16 major;
|
|
u16 minor;
|
|
} __packed;
|
|
|
|
struct icmsg_hdr {
|
|
struct ic_version icverframe;
|
|
u16 icmsgtype;
|
|
struct ic_version icvermsg;
|
|
u16 icmsgsize;
|
|
u32 status;
|
|
u8 ictransaction_id;
|
|
u8 icflags;
|
|
u8 reserved[2];
|
|
} __packed;
|
|
|
|
struct icmsg_negotiate {
|
|
u16 icframe_vercnt;
|
|
u16 icmsg_vercnt;
|
|
u32 reserved;
|
|
struct ic_version icversion_data[1]; /* any size array */
|
|
} __packed;
|
|
|
|
struct shutdown_msg_data {
|
|
u32 reason_code;
|
|
u32 timeout_seconds;
|
|
u32 flags;
|
|
u8 display_message[2048];
|
|
} __packed;
|
|
|
|
struct heartbeat_msg_data {
|
|
u64 seq_num;
|
|
u32 reserved[8];
|
|
} __packed;
|
|
|
|
/* Time Sync IC defs */
|
|
#define ICTIMESYNCFLAG_PROBE 0
|
|
#define ICTIMESYNCFLAG_SYNC 1
|
|
#define ICTIMESYNCFLAG_SAMPLE 2
|
|
|
|
#ifdef __x86_64__
|
|
#define WLTIMEDELTA 116444736000000000L /* in 100ns unit */
|
|
#else
|
|
#define WLTIMEDELTA 116444736000000000LL
|
|
#endif
|
|
|
|
struct ictimesync_data {
|
|
u64 parenttime;
|
|
u64 childtime;
|
|
u64 roundtriptime;
|
|
u8 flags;
|
|
} __packed;
|
|
|
|
struct hyperv_service_callback {
|
|
u8 msg_type;
|
|
char *log_msg;
|
|
uuid_le data;
|
|
struct vmbus_channel *channel;
|
|
void (*callback) (void *context);
|
|
};
|
|
|
|
#define MAX_SRV_VER 0x7ffffff
|
|
extern void vmbus_prep_negotiate_resp(struct icmsg_hdr *,
|
|
struct icmsg_negotiate *, u8 *, int,
|
|
int);
|
|
|
|
int hv_kvp_init(struct hv_util_service *);
|
|
void hv_kvp_deinit(void);
|
|
void hv_kvp_onchannelcallback(void *);
|
|
|
|
#endif /* __KERNEL__ */
|
|
#endif /* _HYPERV_H */
|