| /* |
| * |
| * Copyright (c) 2009, Microsoft Corporation. |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms and conditions of the GNU General Public License, |
| * version 2, as published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| * more details. |
| * |
| * You should have received a copy of the GNU General Public License along with |
| * this program; if not, write to the Free Software Foundation, Inc., 59 Temple |
| * Place - Suite 330, Boston, MA 02111-1307 USA. |
| * |
| * Authors: |
| * Haiyang Zhang <haiyangz@microsoft.com> |
| * Hank Janssen <hjanssen@microsoft.com> |
| * |
| */ |
| |
| |
| #ifndef _VMBUS_API_H_ |
| #define _VMBUS_API_H_ |
| |
| #include <linux/device.h> |
| #include <linux/workqueue.h> |
| |
| #define MAX_PAGE_BUFFER_COUNT 16 |
| #define MAX_MULTIPAGE_BUFFER_COUNT 32 /* 128K */ |
| |
| #pragma pack(push, 1) |
| |
| /* Single-page buffer */ |
| struct hv_page_buffer { |
| u32 len; |
| u32 offset; |
| u64 pfn; |
| }; |
| |
| /* Multiple-page buffer */ |
| struct hv_multipage_buffer { |
| /* Length and Offset determines the # of pfns in the array */ |
| u32 len; |
| u32 offset; |
| u64 pfn_array[MAX_MULTIPAGE_BUFFER_COUNT]; |
| }; |
| |
| /* 0x18 includes the proprietary packet header */ |
| #define MAX_PAGE_BUFFER_PACKET (0x18 + \ |
| (sizeof(struct hv_page_buffer) * \ |
| MAX_PAGE_BUFFER_COUNT)) |
| #define MAX_MULTIPAGE_BUFFER_PACKET (0x18 + \ |
| sizeof(struct hv_multipage_buffer)) |
| |
| |
| #pragma pack(pop) |
| |
| struct hv_driver; |
| struct hv_device; |
| |
| struct hv_dev_port_info { |
| u32 int_mask; |
| u32 read_idx; |
| u32 write_idx; |
| u32 bytes_avail_toread; |
| u32 bytes_avail_towrite; |
| }; |
| |
| struct hv_device_info { |
| u32 chn_id; |
| u32 chn_state; |
| struct hv_guid chn_type; |
| struct hv_guid chn_instance; |
| |
| u32 monitor_id; |
| u32 server_monitor_pending; |
| u32 server_monitor_latency; |
| u32 server_monitor_conn_id; |
| u32 client_monitor_pending; |
| u32 client_monitor_latency; |
| u32 client_monitor_conn_id; |
| |
| struct hv_dev_port_info inbound; |
| struct hv_dev_port_info outbound; |
| }; |
| |
| /* Base driver object */ |
| struct hv_driver { |
| const char *name; |
| |
| /* the device type supported by this driver */ |
| struct hv_guid dev_type; |
| |
| /* |
| * Device type specific drivers (net, blk etc.) |
| * need a mechanism to get a pointer to |
| * device type specific driver structure given |
| * a pointer to the base hyperv driver structure. |
| * The current code solves this problem using |
| * a hack. Support this need explicitly |
| */ |
| void *priv; |
| |
| struct device_driver driver; |
| |
| int (*dev_add)(struct hv_device *device, void *data); |
| int (*dev_rm)(struct hv_device *device); |
| void (*cleanup)(struct hv_driver *driver); |
| }; |
| |
| /* Base device object */ |
| struct hv_device { |
| /* the driver for this device */ |
| struct hv_driver *drv; |
| |
| char name[64]; |
| |
| struct work_struct probe_failed_work_item; |
| |
| int probe_error; |
| |
| /* the device type id of this device */ |
| struct hv_guid dev_type; |
| |
| /* the device instance id of this device */ |
| struct hv_guid dev_instance; |
| |
| struct device device; |
| |
| struct vmbus_channel *channel; |
| |
| /* Device extension; */ |
| void *ext; |
| }; |
| |
| #endif /* _VMBUS_API_H_ */ |