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Commit 2a91ec63 authored by Mika Westerberg's avatar Mika Westerberg Committed by David S. Miller
Browse files

thunderbolt: Move ring descriptor flags to thunderbolt.h 



A Thunderbolt service driver might need to check if there was an error
with the descriptor when in frame mode. We also add two Rx specific
error flags RING_DESC_CRC_ERROR and RING_DESC_BUFFER_OVERRUN.

Signed-off-by: default avatarMika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: default avatarMichael Jamet <michael.jamet@intel.com>
Reviewed-by: default avatarYehezkel Bernat <yehezkel.bernat@intel.com>
Reviewed-by: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 3b3d9f4d

drivers/thunderbolt/nhi_regs.h

+0 −7
Original line number Diff line number Diff line
@@ -17,13 +17,6 @@ enum ring_flags { 
	RING_FLAG_ENABLE = 1 << 31,

};



enum ring_desc_flags {

	RING_DESC_ISOCH = 0x1, /* TX only? */

	RING_DESC_COMPLETED = 0x2, /* set by NHI */

	RING_DESC_POSTED = 0x4, /* always set this */

	RING_DESC_INTERRUPT = 0x8, /* request an interrupt on completion */

};



/**

 * struct ring_desc - TX/RX ring entry

 *

include/linux/thunderbolt.h

+18 −0
Original line number Diff line number Diff line
@@ -478,6 +478,24 @@ struct tb_ring { 
struct ring_frame;

typedef void (*ring_cb)(struct tb_ring *, struct ring_frame *, bool canceled);



/**

 * enum ring_desc_flags - Flags for DMA ring descriptor

 * %RING_DESC_ISOCH: Enable isonchronous DMA (Tx only)

 * %RING_DESC_CRC_ERROR: In frame mode CRC check failed for the frame (Rx only)

 * %RING_DESC_COMPLETED: Descriptor completed (set by NHI)

 * %RING_DESC_POSTED: Always set this

 * %RING_DESC_BUFFER_OVERRUN: RX buffer overrun

 * %RING_DESC_INTERRUPT: Request an interrupt on completion

 */

enum ring_desc_flags {

	RING_DESC_ISOCH = 0x1,

	RING_DESC_CRC_ERROR = 0x1,

	RING_DESC_COMPLETED = 0x2,

	RING_DESC_POSTED = 0x4,

	RING_DESC_BUFFER_OVERRUN = 0x04,

	RING_DESC_INTERRUPT = 0x8,

};



/**

 * struct ring_frame - For use with ring_rx/ring_tx

 * @buffer_phy: DMA mapped address of the frame