xCAT/xNBA
2
0
Fork 0
mirror of https://github.com/xcat2/xNBA.git synced 2025-02-07 06:21:52 +00:00
Code Issues Projects Releases Wiki Activity

[int13] Provide a permanently closed window via the control interface

Browse Source 
Allow objects to support both streaming and block device protocols, by
starting streaming data only when the data transfer window opens.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown 2011-06-24 19:14:13 +01:00
parent 5eb60f4883
commit 69f5b2e8dc
1 changed files with 15 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
src/arch/i386/interface/pcbios/int13.c
View File

@ -1333,6 +1333,20 @@ static void int13_unhook_vector ( void ) {
&int13_vector );
}
/**
* Check INT13 emulated drive flow control window
*
* @v int13 Emulated drive
*/
static size_t int13_block_window ( struct int13_drive *int13 __unused ) {
/* We are never ready to receive data via this interface.
* This prevents objects that support both block and stream
* interfaces from attempting to send us stream data.
*/
return 0;
}
/**
* Handle INT 13 emulated drive underlying block device closing
*
@ -1357,6 +1371,7 @@ static void int13_block_close ( struct int13_drive *int13, int rc ) {
/** INT 13 drive interface operations */
static struct interface_operation int13_block_op[] = {
INTF_OP ( xfer_window, struct int13_drive *, int13_block_window ),
INTF_OP ( intf_close, struct int13_drive *, int13_block_close ),
};