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Message-Id: <20231227091946.12937-3-ansuelsmth@gmail.com>
Date: Wed, 27 Dec 2023 10:19:45 +0100
From: Christian Marangi <ansuelsmth@...il.com>
To: Andrew Lunn <andrew@...n.ch>,
Heiner Kallweit <hkallweit1@...il.com>,
Russell King <linux@...linux.org.uk>,
"David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>,
netdev@...r.kernel.org,
linux-kernel@...r.kernel.org
Cc: Christian Marangi <ansuelsmth@...il.com>
Subject: [net-next PATCH 2/3] net: phy: at803x: add support for cdt cross short test for qca808x
QCA808x PHY Family supports Cable Diagnostic Test also for Cross Pair
Short.
Add all the define to make enable and support these additional tests.
Cross Short test was previously disabled by default, this is now changed
and enabled by default. In this mode, the mask changed a bit and length
is shifted based on the fault condition.
Signed-off-by: Christian Marangi <ansuelsmth@...il.com>
---
drivers/net/phy/at803x.c | 90 ++++++++++++++++++++++++++++++++--------
1 file changed, 73 insertions(+), 17 deletions(-)
diff --git a/drivers/net/phy/at803x.c b/drivers/net/phy/at803x.c
index 072bcd670ef0..a2f5d608b59e 100644
--- a/drivers/net/phy/at803x.c
+++ b/drivers/net/phy/at803x.c
@@ -254,6 +254,7 @@
#define QCA808X_CDT_ENABLE_TEST BIT(15)
#define QCA808X_CDT_INTER_CHECK_DIS BIT(13)
+#define QCA808X_CDT_STATUS BIT(11)
#define QCA808X_CDT_LENGTH_UNIT BIT(10)
#define QCA808X_MMD3_CDT_STATUS 0x8064
@@ -261,16 +262,44 @@
#define QCA808X_MMD3_CDT_DIAG_PAIR_B 0x8066
#define QCA808X_MMD3_CDT_DIAG_PAIR_C 0x8067
#define QCA808X_MMD3_CDT_DIAG_PAIR_D 0x8068
-#define QCA808X_CDT_DIAG_LENGTH GENMASK(7, 0)
+#define QCA808X_CDT_DIAG_LENGTH_SAME_SHORT GENMASK(15, 8)
+#define QCA808X_CDT_DIAG_LENGTH_CROSS_SHORT GENMASK(7, 0)
#define QCA808X_CDT_CODE_PAIR_A GENMASK(15, 12)
#define QCA808X_CDT_CODE_PAIR_B GENMASK(11, 8)
#define QCA808X_CDT_CODE_PAIR_C GENMASK(7, 4)
#define QCA808X_CDT_CODE_PAIR_D GENMASK(3, 0)
-#define QCA808X_CDT_STATUS_STAT_FAIL 0
-#define QCA808X_CDT_STATUS_STAT_NORMAL 1
-#define QCA808X_CDT_STATUS_STAT_OPEN 2
-#define QCA808X_CDT_STATUS_STAT_SHORT 3
+
+#define QCA808X_CDT_STATUS_STAT_TYPE GENMASK(1, 0)
+#define QCA808X_CDT_STATUS_STAT_FAIL FIELD_PREP_CONST(QCA808X_CDT_STATUS_STAT_TYPE, 0)
+#define QCA808X_CDT_STATUS_STAT_NORMAL FIELD_PREP_CONST(QCA808X_CDT_STATUS_STAT_TYPE, 1)
+#define QCA808X_CDT_STATUS_STAT_SAME_OPEN FIELD_PREP_CONST(QCA808X_CDT_STATUS_STAT_TYPE, 2)
+#define QCA808X_CDT_STATUS_STAT_SAME_SHORT FIELD_PREP_CONST(QCA808X_CDT_STATUS_STAT_TYPE, 3)
+
+#define QCA808X_CDT_STATUS_STAT_MDI GENMASK(3, 2)
+#define QCA808X_CDT_STATUS_STAT_MDI1 FIELD_PREP_CONST(QCA808X_CDT_STATUS_STAT_MDI, 1)
+#define QCA808X_CDT_STATUS_STAT_MDI2 FIELD_PREP_CONST(QCA808X_CDT_STATUS_STAT_MDI, 2)
+#define QCA808X_CDT_STATUS_STAT_MDI3 FIELD_PREP_CONST(QCA808X_CDT_STATUS_STAT_MDI, 3)
+
+/* NORMAL are MDI with type set to 0 */
+#define QCA808X_CDT_STATUS_STAT_CROSS_SHORT_WITH_MDI1_SAME_NORMAL QCA808X_CDT_STATUS_STAT_MDI1
+#define QCA808X_CDT_STATUS_STAT_CROSS_SHORT_WITH_MDI1_SAME_OPEN (QCA808X_CDT_STATUS_STAT_SAME_OPEN |\
+ QCA808X_CDT_STATUS_STAT_MDI1)
+#define QCA808X_CDT_STATUS_STAT_CROSS_SHORT_WITH_MDI1_SAME_SHORT (QCA808X_CDT_STATUS_STAT_SAME_SHORT |\
+ QCA808X_CDT_STATUS_STAT_MDI1)
+#define QCA808X_CDT_STATUS_STAT_CROSS_SHORT_WITH_MDI2_SAME_NORMAL QCA808X_CDT_STATUS_STAT_MDI2
+#define QCA808X_CDT_STATUS_STAT_CROSS_SHORT_WITH_MDI2_SAME_OPEN (QCA808X_CDT_STATUS_STAT_SAME_OPEN |\
+ QCA808X_CDT_STATUS_STAT_MDI2)
+#define QCA808X_CDT_STATUS_STAT_CROSS_SHORT_WITH_MDI2_SAME_SHORT (QCA808X_CDT_STATUS_STAT_SAME_SHORT |\
+ QCA808X_CDT_STATUS_STAT_MDI2)
+#define QCA808X_CDT_STATUS_STAT_CROSS_SHORT_WITH_MDI3_SAME_NORMAL QCA808X_CDT_STATUS_STAT_MDI3
+#define QCA808X_CDT_STATUS_STAT_CROSS_SHORT_WITH_MDI3_SAME_OPEN (QCA808X_CDT_STATUS_STAT_SAME_OPEN |\
+ QCA808X_CDT_STATUS_STAT_MDI3)
+#define QCA808X_CDT_STATUS_STAT_CROSS_SHORT_WITH_MDI3_SAME_SHORT (QCA808X_CDT_STATUS_STAT_SAME_SHORT |\
+ QCA808X_CDT_STATUS_STAT_MDI3)
+
+/* Added for reference of existence but should be handled by wait_for_completion already */
+#define QCA808X_CDT_STATUS_STAT_BUSY (BIT(1) | BIT(3))
#define QCA808X_MMD7_LED2_CTRL 0x8074
#define QCA808X_MMD7_LED2_FORCE_CTRL 0x8075
@@ -2008,8 +2037,17 @@ static int qca808x_soft_reset(struct phy_device *phydev)
static bool qca808x_cdt_fault_length_valid(int cdt_code)
{
switch (cdt_code) {
- case QCA808X_CDT_STATUS_STAT_SHORT:
- case QCA808X_CDT_STATUS_STAT_OPEN:
+ case QCA808X_CDT_STATUS_STAT_SAME_SHORT:
+ case QCA808X_CDT_STATUS_STAT_SAME_OPEN:
+ case QCA808X_CDT_STATUS_STAT_CROSS_SHORT_WITH_MDI1_SAME_NORMAL:
+ case QCA808X_CDT_STATUS_STAT_CROSS_SHORT_WITH_MDI1_SAME_OPEN:
+ case QCA808X_CDT_STATUS_STAT_CROSS_SHORT_WITH_MDI1_SAME_SHORT:
+ case QCA808X_CDT_STATUS_STAT_CROSS_SHORT_WITH_MDI2_SAME_NORMAL:
+ case QCA808X_CDT_STATUS_STAT_CROSS_SHORT_WITH_MDI2_SAME_OPEN:
+ case QCA808X_CDT_STATUS_STAT_CROSS_SHORT_WITH_MDI2_SAME_SHORT:
+ case QCA808X_CDT_STATUS_STAT_CROSS_SHORT_WITH_MDI3_SAME_NORMAL:
+ case QCA808X_CDT_STATUS_STAT_CROSS_SHORT_WITH_MDI3_SAME_OPEN:
+ case QCA808X_CDT_STATUS_STAT_CROSS_SHORT_WITH_MDI3_SAME_SHORT:
return true;
default:
return false;
@@ -2021,17 +2059,28 @@ static int qca808x_cable_test_result_trans(int cdt_code)
switch (cdt_code) {
case QCA808X_CDT_STATUS_STAT_NORMAL:
return ETHTOOL_A_CABLE_RESULT_CODE_OK;
- case QCA808X_CDT_STATUS_STAT_SHORT:
+ case QCA808X_CDT_STATUS_STAT_SAME_SHORT:
return ETHTOOL_A_CABLE_RESULT_CODE_SAME_SHORT;
- case QCA808X_CDT_STATUS_STAT_OPEN:
+ case QCA808X_CDT_STATUS_STAT_SAME_OPEN:
return ETHTOOL_A_CABLE_RESULT_CODE_OPEN;
+ case QCA808X_CDT_STATUS_STAT_CROSS_SHORT_WITH_MDI1_SAME_NORMAL:
+ case QCA808X_CDT_STATUS_STAT_CROSS_SHORT_WITH_MDI1_SAME_OPEN:
+ case QCA808X_CDT_STATUS_STAT_CROSS_SHORT_WITH_MDI1_SAME_SHORT:
+ case QCA808X_CDT_STATUS_STAT_CROSS_SHORT_WITH_MDI2_SAME_NORMAL:
+ case QCA808X_CDT_STATUS_STAT_CROSS_SHORT_WITH_MDI2_SAME_OPEN:
+ case QCA808X_CDT_STATUS_STAT_CROSS_SHORT_WITH_MDI2_SAME_SHORT:
+ case QCA808X_CDT_STATUS_STAT_CROSS_SHORT_WITH_MDI3_SAME_NORMAL:
+ case QCA808X_CDT_STATUS_STAT_CROSS_SHORT_WITH_MDI3_SAME_OPEN:
+ case QCA808X_CDT_STATUS_STAT_CROSS_SHORT_WITH_MDI3_SAME_SHORT:
+ return ETHTOOL_A_CABLE_RESULT_CODE_CROSS_SHORT;
case QCA808X_CDT_STATUS_STAT_FAIL:
default:
return ETHTOOL_A_CABLE_RESULT_CODE_UNSPEC;
}
}
-static int qca808x_cdt_fault_length(struct phy_device *phydev, int pair)
+static int qca808x_cdt_fault_length(struct phy_device *phydev, int pair,
+ int result)
{
int val;
u32 cdt_length_reg = 0;
@@ -2057,7 +2106,11 @@ static int qca808x_cdt_fault_length(struct phy_device *phydev, int pair)
if (val < 0)
return val;
- val = FIELD_GET(QCA808X_CDT_DIAG_LENGTH, val);
+ if (result == ETHTOOL_A_CABLE_RESULT_CODE_SAME_SHORT)
+ val = FIELD_GET(QCA808X_CDT_DIAG_LENGTH_SAME_SHORT, val);
+ else
+ val = FIELD_GET(QCA808X_CDT_DIAG_LENGTH_CROSS_SHORT, val);
+
return at803x_cdt_fault_length(val);
}
@@ -2110,8 +2163,7 @@ static int qca808x_cable_test_get_status(struct phy_device *phydev, bool *finish
*finished = false;
val = QCA808X_CDT_ENABLE_TEST |
- QCA808X_CDT_LENGTH_UNIT |
- QCA808X_CDT_INTER_CHECK_DIS;
+ QCA808X_CDT_LENGTH_UNIT;
ret = at803x_cdt_start(phydev, val);
if (ret)
return ret;
@@ -2139,19 +2191,23 @@ static int qca808x_cable_test_get_status(struct phy_device *phydev, bool *finish
qca808x_cable_test_result_trans(pair_d));
if (qca808x_cdt_fault_length_valid(pair_a)) {
- val = qca808x_cdt_fault_length(phydev, ETHTOOL_A_CABLE_PAIR_A);
+ val = qca808x_cdt_fault_length(phydev, ETHTOOL_A_CABLE_PAIR_A,
+ qca808x_cable_test_result_trans(pair_a));
ethnl_cable_test_fault_length(phydev, ETHTOOL_A_CABLE_PAIR_A, val);
}
if (qca808x_cdt_fault_length_valid(pair_b)) {
- val = qca808x_cdt_fault_length(phydev, ETHTOOL_A_CABLE_PAIR_B);
+ val = qca808x_cdt_fault_length(phydev, ETHTOOL_A_CABLE_PAIR_B,
+ qca808x_cable_test_result_trans(pair_b));
ethnl_cable_test_fault_length(phydev, ETHTOOL_A_CABLE_PAIR_B, val);
}
if (qca808x_cdt_fault_length_valid(pair_c)) {
- val = qca808x_cdt_fault_length(phydev, ETHTOOL_A_CABLE_PAIR_C);
+ val = qca808x_cdt_fault_length(phydev, ETHTOOL_A_CABLE_PAIR_C,
+ qca808x_cable_test_result_trans(pair_c));
ethnl_cable_test_fault_length(phydev, ETHTOOL_A_CABLE_PAIR_C, val);
}
if (qca808x_cdt_fault_length_valid(pair_d)) {
- val = qca808x_cdt_fault_length(phydev, ETHTOOL_A_CABLE_PAIR_D);
+ val = qca808x_cdt_fault_length(phydev, ETHTOOL_A_CABLE_PAIR_D,
+ qca808x_cable_test_result_trans(pair_d));
ethnl_cable_test_fault_length(phydev, ETHTOOL_A_CABLE_PAIR_D, val);
}
--
2.40.1
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