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69 lines
2.4 KiB
Diff
69 lines
2.4 KiB
Diff
From cc230f5618174506889f98ac6b79e72ac9d9d9e4 Mon Sep 17 00:00:00 2001
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From: Calvin Johnson <calvin.johnson@nxp.com>
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Date: Wed, 15 Nov 2017 13:45:27 +0530
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Subject: [PATCH] staging: fsl_ppfe/eth: add function to update tmu credits
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__hif_lib_update_credit function is used to update the tmu credits.
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If tx_qos is set, tmu credit is updated based on the number of packets
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transmitted by tmu.
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Signed-off-by: Calvin Johnson <calvin.johnson@nxp.com>
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Signed-off-by: Anjaneyulu Jagarlmudi <anji.jagarlmudi@nxp.com>
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---
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drivers/staging/fsl_ppfe/pfe_hif_lib.c | 33 +++++++++++++++++++++++++++++++++
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drivers/staging/fsl_ppfe/pfe_hif_lib.h | 1 +
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2 files changed, 34 insertions(+)
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--- a/drivers/staging/fsl_ppfe/pfe_hif_lib.c
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+++ b/drivers/staging/fsl_ppfe/pfe_hif_lib.c
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@@ -565,6 +565,39 @@ static void hif_lib_tmu_credit_init(stru
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}
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}
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+/* __hif_lib_update_credit
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+ *
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+ * @param[in] client hif client context
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+ * @param[in] queue queue number in match with TMU
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+ */
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+void __hif_lib_update_credit(struct hif_client_s *client, unsigned int queue)
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+{
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+ unsigned int tmu_tx_packets, tmp;
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+
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+ if (tx_qos) {
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+ tmu_tx_packets = be32_to_cpu(pe_dmem_read(TMU0_ID +
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+ client->id, TMU_DM_TX_TRANS, 4));
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+
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+ /* tx_packets counter overflowed */
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+ if (tmu_tx_packets >
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+ pfe->tmu_credit.tx_packets[client->id][queue]) {
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+ tmp = UINT_MAX - tmu_tx_packets +
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+ pfe->tmu_credit.tx_packets[client->id][queue];
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+
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+ pfe->tmu_credit.tx_credit[client->id][queue] =
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+ pfe->tmu_credit.tx_credit_max[client->id][queue] - tmp;
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+ } else {
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+ /* TMU tx <= pfe_eth tx, normal case or both OF since
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+ * last time
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+ */
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+ pfe->tmu_credit.tx_credit[client->id][queue] =
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+ pfe->tmu_credit.tx_credit_max[client->id][queue] -
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+ (pfe->tmu_credit.tx_packets[client->id][queue] -
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+ tmu_tx_packets);
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+ }
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+ }
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+}
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+
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int pfe_hif_lib_init(struct pfe *pfe)
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{
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int rc;
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--- a/drivers/staging/fsl_ppfe/pfe_hif_lib.h
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+++ b/drivers/staging/fsl_ppfe/pfe_hif_lib.h
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@@ -185,6 +185,7 @@ void *hif_lib_tx_get_next_complete(struc
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void *hif_lib_receive_pkt(struct hif_client_s *client, int qno, int *len, int
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*ofst, unsigned int *rx_ctrl,
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unsigned int *desc_ctrl, void **priv_data);
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+void __hif_lib_update_credit(struct hif_client_s *client, unsigned int queue);
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void hif_lib_set_rx_cpu_affinity(struct hif_client_s *client, int cpu_id);
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void hif_lib_set_tx_queue_nocpy(struct hif_client_s *client, int qno, int
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enable);
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