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dpaa_eth: update the buffer layout for non-A050385 erratum scenarios

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Impose a larger RX private data area only when the A050385 erratum is
present on the hardware. A smaller buffer size is sufficient in all
other scenarios. This enables a wider range of linear Jumbo frame
sizes in non-erratum scenarios, instead of turning to multi
buffer Scatter/Gather frames. The maximum linear frame size is
increased by 128 bytes for non-erratum arm64 platforms.

Cleanup the hardware annotations header defines in the process.

Fixes: 3c68b8fffb48 ("dpaa_eth: FMan erratum A050385 workaround")
Signed-off-by: Camelia Groza <camelia.groza@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Camelia Groza 2020-11-02 20:34:35 +02:00 committed by Jakub Kicinski
parent 04a55c944f
commit acef159a0c
1 changed files with 11 additions and 7 deletions

18
drivers/net/ethernet/freescale/dpaa/dpaa_eth.c

@ -174,12 +174,17 @@ MODULE_PARM_DESC(tx_timeout, "The Tx timeout in ms");
#define DPAA_PARSE_RESULTS_SIZE sizeof(struct fman_prs_result)
#define DPAA_TIME_STAMP_SIZE 8
#define DPAA_HASH_RESULTS_SIZE 8
#ifdef CONFIG_DPAA_ERRATUM_A050385
#define DPAA_RX_PRIV_DATA_SIZE (DPAA_A050385_ALIGN - (DPAA_PARSE_RESULTS_SIZE\
+ DPAA_TIME_STAMP_SIZE + DPAA_HASH_RESULTS_SIZE))
#else
#define DPAA_RX_PRIV_DATA_SIZE (u16)(DPAA_TX_PRIV_DATA_SIZE + \
#define DPAA_HWA_SIZE (DPAA_PARSE_RESULTS_SIZE + DPAA_TIME_STAMP_SIZE \
+ DPAA_HASH_RESULTS_SIZE)
#define DPAA_RX_PRIV_DATA_DEFAULT_SIZE (DPAA_TX_PRIV_DATA_SIZE + \
dpaa_rx_extra_headroom)
#ifdef CONFIG_DPAA_ERRATUM_A050385
#define DPAA_RX_PRIV_DATA_A050385_SIZE (DPAA_A050385_ALIGN - DPAA_HWA_SIZE)
#define DPAA_RX_PRIV_DATA_SIZE (fman_has_errata_a050385() ? \
DPAA_RX_PRIV_DATA_A050385_SIZE : \
DPAA_RX_PRIV_DATA_DEFAULT_SIZE)
#else
#define DPAA_RX_PRIV_DATA_SIZE DPAA_RX_PRIV_DATA_DEFAULT_SIZE
#endif
#define DPAA_ETH_PCD_RXQ_NUM 128
@ -2854,8 +2859,7 @@ static inline u16 dpaa_get_headroom(struct dpaa_buffer_layout *bl)
*
* Also make sure the headroom is a multiple of data_align bytes
*/
headroom = (u16)(bl->priv_data_size + DPAA_PARSE_RESULTS_SIZE +
DPAA_TIME_STAMP_SIZE + DPAA_HASH_RESULTS_SIZE);
headroom = (u16)(bl->priv_data_size + DPAA_HWA_SIZE);
return ALIGN(headroom, DPAA_FD_DATA_ALIGNMENT);
}