[PATCH 15/50] net/liquidio: add API for VF FLR
From: Shijith Thotton <hidden>
Date: 2017-02-21 09:28:53
Subsystem:
networking drivers, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Add API to perform Function Level Reset. VF sends FLR request to PF using mbox and PF does the reset. Signed-off-by: Shijith Thotton <redacted> Signed-off-by: Jerin Jacob <redacted> Signed-off-by: Derek Chickles <redacted> Signed-off-by: Venkat Koppula <redacted> Signed-off-by: Mallesham Jatharakonda <redacted> --- 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 7318bf5..23dfa43 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