[PATCH v2 12/46] net/liquidio: add API for VF FLR
From: Shijith Thotton <hidden>
Date: 2017-03-02 11:38:33
Subsystem:
networking drivers, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
VF sends Function Level Reset 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: Srisivasubramanian S <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 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