common/qat: reset ring pairs before setting GEN4

This commit resets ring pairs of particular vf before
setting PMD.

Signed-off-by: Arek Kusztal <arkadiuszx.kusztal@intel.com>
Acked-by: Fan Zhang <roy.fan.zhang@intel.com>
Acked-by: Akhil Goyal <gakhil@marvell.com>

diff --git a/drivers/common/qat/qat_device.c b/drivers/common/qat/qat_device.c
index 5ee4411..e52d90f 100644 (file)
--- a/drivers/common/qat/qat_device.c
+++ b/drivers/common/qat/qat_device.c
@@ -11,6 +11,7 @@
 #include "qat_sym_pmd.h"
 #include "qat_comp_pmd.h"
 #include "adf_pf2vf_msg.h"
+#include "qat_pf2vf.h"
 
 /* pv2vf data Gen 4*/
 struct qat_pf2vf_dev qat_pf2vf_gen4 = {
@@ -125,6 +126,28 @@ qat_get_qat_dev_from_pci_dev(struct rte_pci_device *pci_dev)
        return qat_pci_get_named_dev(name);
 }
 
+static int
+qat_gen4_reset_ring_pair(struct qat_pci_device *qat_pci_dev)
+{
+       int ret = 0, i;
+       uint8_t data[4];
+       struct qat_pf2vf_msg pf2vf_msg;
+
+       pf2vf_msg.msg_type = ADF_VF2PF_MSGTYPE_RP_RESET;
+       pf2vf_msg.block_hdr = -1;
+       for (i = 0; i < QAT_GEN4_BUNDLE_NUM; i++) {
+               pf2vf_msg.msg_data = i;
+               ret = qat_pf2vf_exch_msg(qat_pci_dev, pf2vf_msg, 1, data);
+               if (ret) {
+                       QAT_LOG(ERR, "QAT error when reset bundle no %d",
+                               i);
+                       return ret;
+               }
+       }
+
+       return 0;
+}
+
 static void qat_dev_parse_cmd(const char *str, struct qat_dev_cmd_param
                *qat_dev_cmd_param)
 {
@@ -371,6 +394,15 @@ static int qat_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
        if (qat_pci_dev == NULL)
                return -ENODEV;
 
+       if (qat_pci_dev->qat_dev_gen == QAT_GEN4) {
+               if (qat_gen4_reset_ring_pair(qat_pci_dev)) {
+                       QAT_LOG(ERR,
+                               "Cannot reset ring pairs, does pf driver supports pf2vf comms?"
+                               );
+                       return -ENODEV;
+               }
+       }
+
        sym_ret = qat_sym_dev_create(qat_pci_dev, qat_dev_cmd_param);
        if (sym_ret == 0) {
                num_pmds_created++;