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| author | K. Y. Srinivasan <kys@microsoft.com> | 2011-05-12 19:34:17 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-05-17 11:46:13 -0700 |
| commit | 7effffb7a01b817f6c9fd6979f2c01f746bfc555 (patch) | |
| tree | 7d117c3d84b82b67a60c6000390230dc2dcf553b /drivers/staging/hv/hyperv.h | |
| parent | a363bf7bd23fb6ee3e1690bd300a5e285f9c88df (diff) | |
| download | op-kernel-dev-7effffb7a01b817f6c9fd6979f2c01f746bfc555.zip op-kernel-dev-7effffb7a01b817f6c9fd6979f2c01f746bfc555.tar.gz | |
Staging: hv: Move a subset of definitions from ring_buffer.h to hyperv.h
Move a subset of definitions from ring_buffer.h to hyperv.h.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Abhishek Kane <v-abkane@microsoft.com>
Signed-off-by: Hank Janssen <hjanssen@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/staging/hv/hyperv.h')
| -rw-r--r-- | drivers/staging/hv/hyperv.h | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/drivers/staging/hv/hyperv.h b/drivers/staging/hv/hyperv.h index 22e434a..0baa868 100644 --- a/drivers/staging/hv/hyperv.h +++ b/drivers/staging/hv/hyperv.h @@ -59,5 +59,46 @@ struct hv_multipage_buffer { #pragma pack(pop) +struct hv_ring_buffer { + /* Offset in bytes from the start of ring data below */ + u32 write_index; + + /* Offset in bytes from the start of ring data below */ + u32 read_index; + + u32 interrupt_mask; + + /* Pad it to PAGE_SIZE so that data starts on page boundary */ + u8 reserved[4084]; + + /* NOTE: + * The interrupt_mask field is used only for channels but since our + * vmbus connection also uses this data structure and its data starts + * here, we commented out this field. + */ + + /* + * Ring data starts here + RingDataStartOffset + * !!! DO NOT place any fields below this !!! + */ + u8 buffer[0]; +} __packed; + +struct hv_ring_buffer_info { + struct hv_ring_buffer *ring_buffer; + u32 ring_size; /* Include the shared header */ + spinlock_t ring_lock; + + u32 ring_datasize; /* < ring_size */ + u32 ring_data_startoffset; +}; + +struct hv_ring_buffer_debug_info { + u32 current_interrupt_mask; + u32 current_read_index; + u32 current_write_index; + u32 bytes_avail_toread; + u32 bytes_avail_towrite; +}; #endif /* _HYPERV_H */ |
