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| author | Magnus Damm <magnus.damm@gmail.com> | 2008-01-23 15:58:35 +0900 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2008-02-01 14:35:05 -0800 |
| commit | b3476675320eda83cf061a686cdc80b76f2bfdc4 (patch) | |
| tree | 11d31a0ade5c961fd5738a67b99ccb411325607d /drivers/usb/core/hcd.h | |
| parent | 0915f490d81c1a5098b399ec6c0be45bd421ee1d (diff) | |
| download | blackbird-op-linux-b3476675320eda83cf061a686cdc80b76f2bfdc4.tar.gz blackbird-op-linux-b3476675320eda83cf061a686cdc80b76f2bfdc4.zip | |
usb: dma bounce buffer support
usb: dma bounce buffer support V4
This patch adds dma bounce buffer support to the usb core. These buffers
can be enabled with the HCD_LOCAL_MEM flag, and they make sure that all data
passed to the host controller is allocated using dma_alloc_coherent().
Signed-off-by: Magnus Damm <damm@igel.co.jp>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/core/hcd.h')
| -rw-r--r-- | drivers/usb/core/hcd.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/usb/core/hcd.h b/drivers/usb/core/hcd.h index 080298ad5990..0095641c51fa 100644 --- a/drivers/usb/core/hcd.h +++ b/drivers/usb/core/hcd.h @@ -165,6 +165,7 @@ struct hc_driver { int flags; #define HCD_MEMORY 0x0001 /* HC regs use memory (else I/O) */ +#define HCD_LOCAL_MEM 0x0002 /* HC needs local memory */ #define HCD_USB11 0x0010 /* USB 1.1 */ #define HCD_USB2 0x0020 /* USB 2.0 */ |
