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: Mika Westerberg <mika.westerb...@linux.intel.com>
Reviewed-by: Michael Jamet <michael.ja...@intel.com>
Reviewed-by: Yehezkel Bernat <yehezkel.ber...@intel.com>
---
drivers/thunderbolt/nhi_regs.h | 7 -------
include/linux/thunderbolt.h | 18 ++++++++++++++++++
2 files changed, 18 insertions(+), 7 deletions(-)
diff --git a/drivers/thunderbolt/nhi_regs.h b/drivers/thunderbolt/nhi_regs.h
index 491a4c0c18fc..5ed6934e31e7 100644
--- a/drivers/thunderbolt/nhi_regs.h
+++ b/drivers/thunderbolt/nhi_regs.h
@@ -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
*
diff --git a/include/linux/thunderbolt.h b/include/linux/thunderbolt.h
index 9ddb83ad890f..e3b9af7be0ad 100644
--- a/include/linux/thunderbolt.h
+++ b/include/linux/thunderbolt.h
@@ -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
--
2.14.1
