1c16b574c4
Backport the phy/phylink/sfp patches currently queued in netdev or in mainline necessary to support GPON popular modules, specifically to support Huawei and Nokia GPON modules. Signed-off-by: Russell King <linux@armlinux.org.uk> [jonas.gorski: include kernel version in file names, refresh patches] Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
81 lines
2.6 KiB
Diff
81 lines
2.6 KiB
Diff
From 38b62a12231be4b86fc5ca5477579d29831c02a5 Mon Sep 17 00:00:00 2001
|
|
From: Russell King <rmk+kernel@armlinux.org.uk>
|
|
Date: Fri, 18 Oct 2019 10:31:07 +0100
|
|
Subject: [PATCH 629/660] net: sfp: ensure TX_FAULT has deasserted before
|
|
probing the PHY
|
|
|
|
TX_FAULT should be deasserted to indicate that the module has completed
|
|
its initialisation. This may include the on-board PHY, so wait until
|
|
the module has deasserted TX_FAULT before probing the PHY.
|
|
|
|
This means that we need an extra state to handle a TX_FAULT that
|
|
remains set for longer than t_init, since using the existing handling
|
|
state would bypass the PHY probe.
|
|
|
|
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
|
|
---
|
|
drivers/net/phy/sfp.c | 31 +++++++++++++++++++++++++------
|
|
1 file changed, 25 insertions(+), 6 deletions(-)
|
|
|
|
--- a/drivers/net/phy/sfp.c
|
|
+++ b/drivers/net/phy/sfp.c
|
|
@@ -54,6 +54,7 @@ enum {
|
|
SFP_S_DOWN = 0,
|
|
SFP_S_WAIT,
|
|
SFP_S_INIT,
|
|
+ SFP_S_INIT_TX_FAULT,
|
|
SFP_S_WAIT_LOS,
|
|
SFP_S_LINK_UP,
|
|
SFP_S_TX_FAULT,
|
|
@@ -111,6 +112,7 @@ static const char * const sm_state_strin
|
|
[SFP_S_DOWN] = "down",
|
|
[SFP_S_WAIT] = "wait",
|
|
[SFP_S_INIT] = "init",
|
|
+ [SFP_S_INIT_TX_FAULT] = "init_tx_fault",
|
|
[SFP_S_WAIT_LOS] = "wait_los",
|
|
[SFP_S_LINK_UP] = "link_up",
|
|
[SFP_S_TX_FAULT] = "tx_fault",
|
|
@@ -1595,8 +1597,6 @@ static void sfp_sm_main(struct sfp *sfp,
|
|
if (event != SFP_E_TIMEOUT)
|
|
break;
|
|
|
|
- sfp_sm_probe_for_phy(sfp);
|
|
-
|
|
if (sfp->state & SFP_F_TX_FAULT) {
|
|
/* Wait t_init before indicating that the link is up,
|
|
* provided the current state indicates no TX_FAULT. If
|
|
@@ -1618,10 +1618,29 @@ static void sfp_sm_main(struct sfp *sfp,
|
|
break;
|
|
|
|
case SFP_S_INIT:
|
|
- if (event == SFP_E_TIMEOUT && sfp->state & SFP_F_TX_FAULT)
|
|
- sfp_sm_fault(sfp, SFP_S_TX_FAULT, true);
|
|
- else if (event == SFP_E_TIMEOUT || event == SFP_E_TX_CLEAR)
|
|
- init_done: sfp_sm_link_check_los(sfp);
|
|
+ if (event == SFP_E_TIMEOUT && sfp->state & SFP_F_TX_FAULT) {
|
|
+ /* TX_FAULT is still asserted after t_init, so assume
|
|
+ * there is a fault.
|
|
+ */
|
|
+ sfp_sm_fault(sfp, SFP_S_INIT_TX_FAULT,
|
|
+ sfp->sm_retries == 5);
|
|
+ } else if (event == SFP_E_TIMEOUT || event == SFP_E_TX_CLEAR) {
|
|
+ init_done: /* TX_FAULT deasserted or we timed out with TX_FAULT
|
|
+ * clear. Probe for the PHY and check the LOS state.
|
|
+ */
|
|
+ sfp_sm_probe_for_phy(sfp);
|
|
+ sfp_sm_link_check_los(sfp);
|
|
+
|
|
+ /* Reset the fault retry count */
|
|
+ sfp->sm_retries = 5;
|
|
+ }
|
|
+ break;
|
|
+
|
|
+ case SFP_S_INIT_TX_FAULT:
|
|
+ if (event == SFP_E_TIMEOUT) {
|
|
+ sfp_module_tx_fault_reset(sfp);
|
|
+ sfp_sm_next(sfp, SFP_S_INIT, T_INIT_JIFFIES);
|
|
+ }
|
|
break;
|
|
|
|
case SFP_S_WAIT_LOS:
|