diff options
Diffstat (limited to 'drivers/staging/fsl_ppfe/pfe_hif_lib.c')
| -rw-r--r-- | drivers/staging/fsl_ppfe/pfe_hif_lib.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/drivers/staging/fsl_ppfe/pfe_hif_lib.c b/drivers/staging/fsl_ppfe/pfe_hif_lib.c index 837eaa2..2ec47bf 100644 --- a/drivers/staging/fsl_ppfe/pfe_hif_lib.c +++ b/drivers/staging/fsl_ppfe/pfe_hif_lib.c @@ -565,6 +565,39 @@ static void hif_lib_tmu_credit_init(struct pfe *pfe) } } +/* __hif_lib_update_credit + * + * @param[in] client hif client context + * @param[in] queue queue number in match with TMU + */ +void __hif_lib_update_credit(struct hif_client_s *client, unsigned int queue) +{ + unsigned int tmu_tx_packets, tmp; + + if (tx_qos) { + tmu_tx_packets = be32_to_cpu(pe_dmem_read(TMU0_ID + + client->id, TMU_DM_TX_TRANS, 4)); + + /* tx_packets counter overflowed */ + if (tmu_tx_packets > + pfe->tmu_credit.tx_packets[client->id][queue]) { + tmp = UINT_MAX - tmu_tx_packets + + pfe->tmu_credit.tx_packets[client->id][queue]; + + pfe->tmu_credit.tx_credit[client->id][queue] = + pfe->tmu_credit.tx_credit_max[client->id][queue] - tmp; + } else { + /* TMU tx <= pfe_eth tx, normal case or both OF since + * last time + */ + pfe->tmu_credit.tx_credit[client->id][queue] = + pfe->tmu_credit.tx_credit_max[client->id][queue] - + (pfe->tmu_credit.tx_packets[client->id][queue] - + tmu_tx_packets); + } + } +} + int pfe_hif_lib_init(struct pfe *pfe) { int rc; |