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From: Shijith Thotton <shijith.thotton@caviumnetworks.com>
To: Ferruh Yigit <ferruh.yigit@intel.com>
Cc: dev@dpdk.org, Jerin Jacob <jerin.jacob@caviumnetworks.com>,
Derek Chickles <derek.chickles@caviumnetworks.com>,
Venkat Koppula <venkat.koppula@caviumnetworks.com>,
Srisivasubramanian S <ssrinivasan@caviumnetworks.com>,
Mallesham Jatharakonda <mjatharakonda@oneconvergence.com>
Date: Sat, 25 Mar 2017 11:54:23 +0530
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Subject: [dpdk-dev] [PATCH v3 12/46] net/liquidio: add API for VF FLR
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VF sends Function Level Reset request to PF using mbox and PF does the
reset.
Signed-off-by: Shijith Thotton <shijith.thotton@caviumnetworks.com>
Signed-off-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>
Signed-off-by: Derek Chickles <derek.chickles@caviumnetworks.com>
Signed-off-by: Venkat Koppula <venkat.koppula@caviumnetworks.com>
Signed-off-by: Srisivasubramanian S <ssrinivasan@caviumnetworks.com>
Signed-off-by: Mallesham Jatharakonda <mjatharakonda@oneconvergence.com>
---
drivers/net/liquidio/base/lio_23xx_vf.c | 19 +++++++++++++++++++
drivers/net/liquidio/base/lio_23xx_vf.h | 2 ++
drivers/net/liquidio/base/lio_mbox.h | 1 +
drivers/net/liquidio/lio_ethdev.c | 5 +++++
4 files changed, 27 insertions(+)
diff --git a/drivers/net/liquidio/base/lio_23xx_vf.c b/drivers/net/liquidio/base/lio_23xx_vf.c
index 6270af5..ed5b830 100644
--- a/drivers/net/liquidio/base/lio_23xx_vf.c
+++ b/drivers/net/liquidio/base/lio_23xx_vf.c
@@ -255,6 +255,25 @@
return 0;
}
+void
+cn23xx_vf_ask_pf_to_do_flr(struct lio_device *lio_dev)
+{
+ struct lio_mbox_cmd mbox_cmd;
+
+ mbox_cmd.msg.mbox_msg64 = 0;
+ mbox_cmd.msg.s.type = LIO_MBOX_REQUEST;
+ mbox_cmd.msg.s.resp_needed = 0;
+ mbox_cmd.msg.s.cmd = LIO_VF_FLR_REQUEST;
+ mbox_cmd.msg.s.len = 1;
+ mbox_cmd.q_no = 0;
+ mbox_cmd.recv_len = 0;
+ mbox_cmd.recv_status = 0;
+ mbox_cmd.fn = NULL;
+ mbox_cmd.fn_arg = 0;
+
+ lio_mbox_write(lio_dev, &mbox_cmd);
+}
+
static void
cn23xx_pfvf_hs_callback(struct lio_device *lio_dev,
struct lio_mbox_cmd *cmd, void *arg)
diff --git a/drivers/net/liquidio/base/lio_23xx_vf.h b/drivers/net/liquidio/base/lio_23xx_vf.h
index 83dc053..ad8db0d 100644
--- a/drivers/net/liquidio/base/lio_23xx_vf.h
+++ b/drivers/net/liquidio/base/lio_23xx_vf.h
@@ -87,6 +87,8 @@
#define CN23XX_VF_BUSY_READING_REG_LOOP_COUNT 100000
+void cn23xx_vf_ask_pf_to_do_flr(struct lio_device *lio_dev);
+
int cn23xx_pfvf_handshake(struct lio_device *lio_dev);
int cn23xx_vf_setup_device(struct lio_device *lio_dev);
diff --git a/drivers/net/liquidio/base/lio_mbox.h b/drivers/net/liquidio/base/lio_mbox.h
index f1c5b8e..b0875d6 100644
--- a/drivers/net/liquidio/base/lio_mbox.h
+++ b/drivers/net/liquidio/base/lio_mbox.h
@@ -43,6 +43,7 @@
#define LIO_MBOX_DATA_MAX 32
#define LIO_VF_ACTIVE 0x1
+#define LIO_VF_FLR_REQUEST 0x2
#define LIO_CORES_CRASHED 0x3
/* Macro for Read acknowledgment */
diff --git a/drivers/net/liquidio/lio_ethdev.c b/drivers/net/liquidio/lio_ethdev.c
index bebe0e8..5aae105 100644
--- a/drivers/net/liquidio/lio_ethdev.c
+++ b/drivers/net/liquidio/lio_ethdev.c
@@ -112,6 +112,11 @@
if (cn23xx_pfvf_handshake(lio_dev))
goto error;
+ /* Initial reset */
+ cn23xx_vf_ask_pf_to_do_flr(lio_dev);
+ /* Wait for FLR for 100ms per SRIOV specification */
+ rte_delay_ms(100);
+
if (cn23xx_vf_set_io_queues_off(lio_dev)) {
lio_dev_err(lio_dev, "Setting io queues off failed\n");
goto error;
--
1.8.3.1