layerscape: add patches-5.4

[openwrt/staging/wigyori.git] / target / linux / layerscape / patches-5.4 / 701-net-0291-staging-fsl_ppfe-eth-add-function-to-update-tmu-cred.patch

diff --git a/target/linux/layerscape/patches-5.4/701-net-0291-staging-fsl_ppfe-eth-add-function-to-update-tmu-cred.patch b/target/linux/layerscape/patches-5.4/701-net-0291-staging-fsl_ppfe-eth-add-function-to-update-tmu-cred.patch
new file mode 100644 (file)
index 0000000..72152bf
--- /dev/null
+++ b/target/linux/layerscape/patches-5.4/701-net-0291-staging-fsl_ppfe-eth-add-function-to-update-tmu-cred.patch
@@ -0,0 +1,68 @@
+From cc230f5618174506889f98ac6b79e72ac9d9d9e4 Mon Sep 17 00:00:00 2001
+From: Calvin Johnson <calvin.johnson@nxp.com>
+Date: Wed, 15 Nov 2017 13:45:27 +0530
+Subject: [PATCH] staging: fsl_ppfe/eth: add function to update tmu credits
+
+__hif_lib_update_credit function is used to update the tmu credits.
+If tx_qos is set, tmu credit is updated based on the number of packets
+transmitted by tmu.
+
+Signed-off-by: Calvin Johnson <calvin.johnson@nxp.com>
+Signed-off-by: Anjaneyulu Jagarlmudi <anji.jagarlmudi@nxp.com>
+---
+ drivers/staging/fsl_ppfe/pfe_hif_lib.c | 33 +++++++++++++++++++++++++++++++++
+ drivers/staging/fsl_ppfe/pfe_hif_lib.h |  1 +
+ 2 files changed, 34 insertions(+)
+
+--- 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(stru
+               }
+ }
+ 
++/* __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;
+--- a/drivers/staging/fsl_ppfe/pfe_hif_lib.h
++++ b/drivers/staging/fsl_ppfe/pfe_hif_lib.h
+@@ -185,6 +185,7 @@ void *hif_lib_tx_get_next_complete(struc
+ void *hif_lib_receive_pkt(struct hif_client_s *client, int qno, int *len, int
+                               *ofst, unsigned int *rx_ctrl,
+                               unsigned int *desc_ctrl, void **priv_data);
++void __hif_lib_update_credit(struct hif_client_s *client, unsigned int queue);
+ void hif_lib_set_rx_cpu_affinity(struct hif_client_s *client, int cpu_id);
+ void hif_lib_set_tx_queue_nocpy(struct hif_client_s *client, int qno, int
+                                       enable);