[RFC 2/3] net: macb: Add buffer descriptor names
From: Alexander Dahl <hidden>
Date: 2017-07-12 16:34:40
Also in:
linux-arm-kernel, lkml
Subsystem:
atmel macb ethernet driver, networking drivers, the rest · Maintainers:
Théo Lebrun, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Documentation of the EMAC buffer descriptor bitfields. Taken from the AT91SAM9G20 complete datasheet. Signed-off-by: Alexander Dahl <redacted> --- drivers/net/ethernet/cadence/macb.h | 50 ++++++++++++++++++------------------- 1 file changed, 25 insertions(+), 25 deletions(-)
diff --git a/drivers/net/ethernet/cadence/macb.h b/drivers/net/ethernet/cadence/macb.h
index 8547d92..567c72d 100644
--- a/drivers/net/ethernet/cadence/macb.h
+++ b/drivers/net/ethernet/cadence/macb.h@@ -566,39 +566,39 @@ struct macb_dma_desc_64 { #define MACB_RX_WADDR_OFFSET 2 #define MACB_RX_WADDR_SIZE 30 -#define MACB_RX_FRMLEN_OFFSET 0 +#define MACB_RX_FRMLEN_OFFSET 0 /* Length of frame */ #define MACB_RX_FRMLEN_SIZE 12 -#define MACB_RX_OFFSET_OFFSET 12 +#define MACB_RX_OFFSET_OFFSET 12 /* Receive buffer offset */ #define MACB_RX_OFFSET_SIZE 2 -#define MACB_RX_SOF_OFFSET 14 +#define MACB_RX_SOF_OFFSET 14 /* Start of frame */ #define MACB_RX_SOF_SIZE 1 -#define MACB_RX_EOF_OFFSET 15 +#define MACB_RX_EOF_OFFSET 15 /* End of frame */ #define MACB_RX_EOF_SIZE 1 -#define MACB_RX_CFI_OFFSET 16 +#define MACB_RX_CFI_OFFSET 16 /* Concatenation format indicator */ #define MACB_RX_CFI_SIZE 1 -#define MACB_RX_VLAN_PRI_OFFSET 17 +#define MACB_RX_VLAN_PRI_OFFSET 17 /* VLAN priority */ #define MACB_RX_VLAN_PRI_SIZE 3 -#define MACB_RX_PRI_TAG_OFFSET 20 +#define MACB_RX_PRI_TAG_OFFSET 20 /* Priority tag detected */ #define MACB_RX_PRI_TAG_SIZE 1 -#define MACB_RX_VLAN_TAG_OFFSET 21 +#define MACB_RX_VLAN_TAG_OFFSET 21 /* VLAN tag detected */ #define MACB_RX_VLAN_TAG_SIZE 1 -#define MACB_RX_TYPEID_MATCH_OFFSET 22 +#define MACB_RX_TYPEID_MATCH_OFFSET 22 /* Type ID match */ #define MACB_RX_TYPEID_MATCH_SIZE 1 -#define MACB_RX_SA4_MATCH_OFFSET 23 +#define MACB_RX_SA4_MATCH_OFFSET 23 /* Specific address register 4 match */ #define MACB_RX_SA4_MATCH_SIZE 1 -#define MACB_RX_SA3_MATCH_OFFSET 24 +#define MACB_RX_SA3_MATCH_OFFSET 24 /* Specific address register 3 match */ #define MACB_RX_SA3_MATCH_SIZE 1 -#define MACB_RX_SA2_MATCH_OFFSET 25 +#define MACB_RX_SA2_MATCH_OFFSET 25 /* Specific address register 2 match */ #define MACB_RX_SA2_MATCH_SIZE 1 -#define MACB_RX_SA1_MATCH_OFFSET 26 +#define MACB_RX_SA1_MATCH_OFFSET 26 /* Specific address register 1 match */ #define MACB_RX_SA1_MATCH_SIZE 1 -#define MACB_RX_EXT_MATCH_OFFSET 28 +#define MACB_RX_EXT_MATCH_OFFSET 28 /* External address match */ #define MACB_RX_EXT_MATCH_SIZE 1 -#define MACB_RX_UHASH_MATCH_OFFSET 29 +#define MACB_RX_UHASH_MATCH_OFFSET 29 /* Unicast hash match */ #define MACB_RX_UHASH_MATCH_SIZE 1 -#define MACB_RX_MHASH_MATCH_OFFSET 30 +#define MACB_RX_MHASH_MATCH_OFFSET 30 /* Multicast hash match */ #define MACB_RX_MHASH_MATCH_SIZE 1 -#define MACB_RX_BROADCAST_OFFSET 31 +#define MACB_RX_BROADCAST_OFFSET 31 /* Global all ones broadcast addr detected */ #define MACB_RX_BROADCAST_SIZE 1 #define MACB_RX_FRMLEN_MASK 0xFFF
@@ -612,11 +612,11 @@ struct macb_dma_desc_64 { #define GEM_RX_CSUM_OFFSET 22 #define GEM_RX_CSUM_SIZE 2 -#define MACB_TX_FRMLEN_OFFSET 0 +#define MACB_TX_FRMLEN_OFFSET 0 /* Length of buffer */ #define MACB_TX_FRMLEN_SIZE 11 -#define MACB_TX_LAST_OFFSET 15 +#define MACB_TX_LAST_OFFSET 15 /* Last buffer */ #define MACB_TX_LAST_SIZE 1 -#define MACB_TX_NOCRC_OFFSET 16 +#define MACB_TX_NOCRC_OFFSET 16 /* No CRC */ #define MACB_TX_NOCRC_SIZE 1 #define MACB_MSS_MFS_OFFSET 16 #define MACB_MSS_MFS_SIZE 14
@@ -624,15 +624,15 @@ struct macb_dma_desc_64 { #define MACB_TX_LSO_SIZE 2 #define MACB_TX_TCP_SEQ_SRC_OFFSET 19 #define MACB_TX_TCP_SEQ_SRC_SIZE 1 -#define MACB_TX_BUF_EXHAUSTED_OFFSET 27 +#define MACB_TX_BUF_EXHAUSTED_OFFSET 27 /* Buffers exhausted in mid frame */ #define MACB_TX_BUF_EXHAUSTED_SIZE 1 -#define MACB_TX_UNDERRUN_OFFSET 28 +#define MACB_TX_UNDERRUN_OFFSET 28 /* Transmit underrun */ #define MACB_TX_UNDERRUN_SIZE 1 -#define MACB_TX_ERROR_OFFSET 29 +#define MACB_TX_ERROR_OFFSET 29 /* Retry limit exceeded */ #define MACB_TX_ERROR_SIZE 1 -#define MACB_TX_WRAP_OFFSET 30 +#define MACB_TX_WRAP_OFFSET 30 /* Wrap */ #define MACB_TX_WRAP_SIZE 1 -#define MACB_TX_USED_OFFSET 31 +#define MACB_TX_USED_OFFSET 31 /* Used */ #define MACB_TX_USED_SIZE 1 #define GEM_TX_FRMLEN_OFFSET 0
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2.1.4