+++ /dev/null
-From 46ed8163ac0d9a11a629f1c446e8c5e711cf35d6 Mon Sep 17 00:00:00 2001
-From: Christian Marangi <ansuelsmth@gmail.com>
-Date: Sat, 11 Nov 2023 18:13:02 +0100
-Subject: [PATCH] malibu-phy: drop usage of first_phy_addr
-
-I'm very confused by this and to me it's not clear the real usage of
-this logic.
-
-From what I can see the usage of this is EXTREMELY FRAGILE and results
-in dangerous results if the OEM (or anyone that by chance try to
-implement things in a logical manner) deviates from the default values
-from the "magical template".
-
-To be in more details. With QSDK 12.4, some tweaks were done to improve
-autoneg and now on every call of port status, the phydev is tried to
-add. This resulted in the call and log spam of an error with ports that
-are actually not present on the system with qsdk reporting phydev is
-NULL. This itself is not an error and printing the error is correct.
-
-What is actually an error from ages is setting generic bitmap reporting
-presence of port that are actually not present. This is very common on
-OEM where the switch_lan_bmp is always a variant of 0x1e (that on bitmap
-results in PORT1 PORT2 PORT3 PORT4 present) or 0x3e (PORT1 PORT2 PORT3
-PORT4 PORT5). Reality is that many device are used as AP with one LAN
-port or one WAN port. (or even exotic configuration with PORT1 not
-present and PORT2 PORT3 PORT4 present (Xiaomi 3600)
-
-With this finding one can say... ok nice, then lets update the DT and
-set the correct bitmap...
-
-Again world is a bad place and reality is that this cause wonderful
-regression in some case of by extreme luck the first ever connected
-port working and the rest of the switch dead.
-
-The problem has been bisected to all the device that doesn't have the
-PORT1 declared in any of the bitmap.
-
-With this perfection in mind, on to the REAL problem.
-
-malibu_phy_hw_init FOR SOME REASON, set a global variable first_phy_addr
-to the first detected PHY addr that coincidentally is always PORT1.
-PORT1 addr is 0x0. The entire code in malibu_phy use this variable to
-derive the phy addrs in some function.
-
-Declaring a bitmap where the PORT1 is missing (or worse PORT4 the only
-one connected) result in first_phy_addr set to 1 or whatever phy addr is
-detected first setting wrong value all over the init stage.
-
-To fix this, just drop this variable and hardcode everything to assume
-the first phy adrr is ALWAYS 0 and remove calculation and use define for
-special case.
-
-With the following change normal switch traffic is restored and ports
-function is recovered.
-
-Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
----
- src/hsl/phy/malibu_phy.c | 63 +++++++++++++++++-----------------------
- 1 file changed, 26 insertions(+), 37 deletions(-)
-
---- a/src/hsl/phy/malibu_phy.c
-+++ b/src/hsl/phy/malibu_phy.c
-@@ -26,8 +26,9 @@
- #include "qcaphy_common.h"
- #include "ssdk_plat.h"
-
--static a_uint32_t first_phy_addr = MAX_PHY_ADDR;
- static a_uint32_t combo_phy_addr = MAX_PHY_ADDR;
-+#define PORT4_PHY_ID 0x4
-+#define PORT5_PHY_ID 0x5
- #define COMBO_PHY_ID combo_phy_addr
-
- /******************************************************************************
-@@ -1250,10 +1251,10 @@ sw_error_t
- malibu_phy_serdes_reset(a_uint32_t dev_id)
- {
-
-- hsl_phy_mii_reg_write(dev_id, first_phy_addr + MALIBU_PHY_PSGMII_ADDR_INC,
-+ hsl_phy_mii_reg_write(dev_id, MALIBU_PHY_PSGMII_ADDR_INC,
- MALIBU_MODE_RESET_REG, MALIBU_MODE_CHANAGE_RESET);
- mdelay(100);
-- hsl_phy_mii_reg_write(dev_id, first_phy_addr + MALIBU_PHY_PSGMII_ADDR_INC,
-+ hsl_phy_mii_reg_write(dev_id, MALIBU_PHY_PSGMII_ADDR_INC,
- MALIBU_MODE_RESET_REG, MALIBU_MODE_RESET_DEFAULT_VALUE);
-
- return SW_OK;
-@@ -1271,8 +1272,7 @@ malibu_phy_interface_set_mode(a_uint32_t
- a_uint16_t phy_data = 0;
- static fal_port_interface_mode_t phy_mode = PORT_INTERFACE_MODE_MAX;
-
-- if ((phy_addr < first_phy_addr) ||
-- (phy_addr > (first_phy_addr + MALIBU_PHY_MAX_ADDR_INC)))
-+ if (phy_addr > MALIBU_PHY_MAX_ADDR_INC)
- return SW_NOT_SUPPORTED;
- /*if interface_mode have been configured, then no need to configure again*/
- if(phy_mode == interface_mode)
-@@ -1295,20 +1295,19 @@ malibu_phy_interface_set_mode(a_uint32_t
- return SW_BAD_PARAM;
- }
-
-- hsl_phy_modify_mii(dev_id,
-- first_phy_addr + MALIBU_PHY_MAX_ADDR_INC, MALIBU_PHY_CHIP_CONFIG,
-+ hsl_phy_modify_mii(dev_id, MALIBU_PHY_MAX_ADDR_INC, MALIBU_PHY_CHIP_CONFIG,
- BITS(0, 4), phy_data);
-
- /* reset operation */
- malibu_phy_serdes_reset(dev_id);
-
- if (interface_mode == PHY_PSGMII_FIBER) {
-- hsl_phy_mii_reg_write(dev_id, first_phy_addr + MALIBU_PHY_MAX_ADDR_INC,
-+ hsl_phy_mii_reg_write(dev_id, MALIBU_PHY_MAX_ADDR_INC,
- MALIBU_PHY_CHIP_CONFIG, MALIBU_MODECTRL_DFLT);
-- hsl_phy_mii_reg_write(dev_id, first_phy_addr + MALIBU_PHY_MAX_ADDR_INC,
-+ hsl_phy_mii_reg_write(dev_id, MALIBU_PHY_MAX_ADDR_INC,
- MALIBU_PHY_CONTROL, MALIBU_MIICTRL_DFLT);
- hsl_phy_phydev_autoneg_update(dev_id,
-- first_phy_addr + MALIBU_PHY_MAX_ADDR_INC, A_FALSE, 0);
-+ MALIBU_PHY_MAX_ADDR_INC, A_FALSE, 0);
- }
- phy_mode = interface_mode;
- SSDK_DEBUG("malibu phy is configured as phy_mode:0x%x\n", phy_mode);
-@@ -1329,13 +1328,12 @@ malibu_phy_interface_get_mode(a_uint32_t
- a_uint16_t phy_data;
- a_uint16_t copper_mode;
-
-- if ((phy_addr < first_phy_addr) ||
-- (phy_addr > (first_phy_addr + MALIBU_PHY_MAX_ADDR_INC))) {
-+ if (phy_addr > MALIBU_PHY_MAX_ADDR_INC) {
- return SW_NOT_SUPPORTED;
- }
-
- phy_data = hsl_phy_mii_reg_read(dev_id,
-- first_phy_addr + MALIBU_PHY_MAX_ADDR_INC, MALIBU_PHY_CHIP_CONFIG);
-+ MALIBU_PHY_MAX_ADDR_INC, MALIBU_PHY_CHIP_CONFIG);
- copper_mode = ((phy_data & MALIBU_PHY_COPPER_MODE) >> 0xf);
- phy_data &= 0x000f;
-
-@@ -1344,13 +1342,13 @@ malibu_phy_interface_get_mode(a_uint32_t
- *interface_mode = PHY_PSGMII_BASET;
- break;
- case MALIBU_PHY_PSGMII_BX1000:
-- if (phy_addr == first_phy_addr + MALIBU_PHY_MAX_ADDR_INC)
-+ if (phy_addr == MALIBU_PHY_MAX_ADDR_INC)
- *interface_mode = PHY_PSGMII_BX1000;
- else
- *interface_mode = PHY_PSGMII_BASET;
- break;
- case MALIBU_PHY_PSGMII_FX100:
-- if (phy_addr == first_phy_addr + MALIBU_PHY_MAX_ADDR_INC)
-+ if (phy_addr == MALIBU_PHY_MAX_ADDR_INC)
- *interface_mode = PHY_PSGMII_FX100;
- else
- *interface_mode = PHY_PSGMII_BASET;
-@@ -1359,14 +1357,14 @@ malibu_phy_interface_get_mode(a_uint32_t
- if (copper_mode) {
- *interface_mode = PHY_PSGMII_BASET;
- } else {
-- if (phy_addr == first_phy_addr + MALIBU_PHY_MAX_ADDR_INC)
-+ if (phy_addr == MALIBU_PHY_MAX_ADDR_INC)
- *interface_mode = PHY_PSGMII_FIBER;
- else
- *interface_mode = PHY_PSGMII_BASET;
- }
- break;
- case MALIBU_PHY_SGMII_BASET:
-- if (phy_addr == first_phy_addr + MALIBU_PHY_MAX_ADDR_INC)
-+ if (phy_addr == MALIBU_PHY_MAX_ADDR_INC)
- *interface_mode = PHY_SGMII_BASET;
- else
- *interface_mode = PORT_QSGMII;
-@@ -1392,13 +1390,12 @@ malibu_phy_interface_get_mode_status(a_u
- a_uint16_t phy_data, phy_mode, phy_mode_status;
- a_uint16_t copper_mode;
-
-- if ((phy_addr < first_phy_addr) ||
-- (phy_addr > (first_phy_addr + MALIBU_PHY_MAX_ADDR_INC))) {
-+ if (phy_addr > MALIBU_PHY_MAX_ADDR_INC) {
- return SW_NOT_SUPPORTED;
- }
-
- phy_data = hsl_phy_mii_reg_read(dev_id,
-- first_phy_addr + MALIBU_PHY_MAX_ADDR_INC, MALIBU_PHY_CHIP_CONFIG);
-+ MALIBU_PHY_MAX_ADDR_INC, MALIBU_PHY_CHIP_CONFIG);
- copper_mode = ((phy_data & MALIBU_PHY_COPPER_MODE) >> 0xf);
- phy_mode = phy_data & 0x000f;
- phy_mode_status = (phy_data & 0x00f0) >> 0x4;
-@@ -1407,7 +1404,7 @@ malibu_phy_interface_get_mode_status(a_u
- if (copper_mode) {
- *interface_mode_status = PHY_PSGMII_BASET;
- } else {
-- if (phy_addr == first_phy_addr + MALIBU_PHY_MAX_ADDR_INC)
-+ if (phy_addr == MALIBU_PHY_MAX_ADDR_INC)
- *interface_mode_status = PHY_PSGMII_FIBER;
- else
- *interface_mode_status = PHY_PSGMII_BASET;
-@@ -1418,19 +1415,19 @@ malibu_phy_interface_get_mode_status(a_u
- *interface_mode_status = PHY_PSGMII_BASET;
- break;
- case MALIBU_PHY_PSGMII_BX1000:
-- if (phy_addr == first_phy_addr + MALIBU_PHY_MAX_ADDR_INC)
-+ if (phy_addr == MALIBU_PHY_MAX_ADDR_INC)
- *interface_mode_status = PHY_PSGMII_BX1000;
- else
- *interface_mode_status = PHY_PSGMII_BASET;
- break;
- case MALIBU_PHY_PSGMII_FX100:
-- if (phy_addr == first_phy_addr + MALIBU_PHY_MAX_ADDR_INC)
-+ if (phy_addr == MALIBU_PHY_MAX_ADDR_INC)
- *interface_mode_status = PHY_PSGMII_FX100;
- else
- *interface_mode_status = PHY_PSGMII_BASET;
- break;
- case MALIBU_PHY_SGMII_BASET:
-- if (phy_addr == first_phy_addr + MALIBU_PHY_MAX_ADDR_INC)
-+ if (phy_addr == MALIBU_PHY_MAX_ADDR_INC)
- *interface_mode_status = PHY_SGMII_BASET;
- else
- *interface_mode_status = PORT_QSGMII;
-@@ -1795,10 +1792,6 @@ malibu_phy_hw_init(a_uint32_t dev_id, a_
- {
- phy_cnt ++;
- phy_addr = qca_ssdk_port_to_phy_addr(dev_id, port_id);
-- if (phy_addr < first_phy_addr)
-- {
-- first_phy_addr = phy_addr;
-- }
- /*enable phy power saving function by default */
- malibu_phy_set_8023az(dev_id, phy_addr, A_TRUE);
- malibu_phy_set_powersave(dev_id, phy_addr, A_TRUE);
-@@ -1824,29 +1817,25 @@ malibu_phy_hw_init(a_uint32_t dev_id, a_
- MALIBU_EXTENDED_NEXT_PAGE_EN, 0);
- }
- }
-- /* qca 8072 two ports phy chip's firstly address to init phy chip */
-- if ((phy_cnt == QCA8072_PHY_NUM) && (first_phy_addr >= 0x3)) {
-- first_phy_addr = first_phy_addr - 0x3;
-- }
-
- /*workaround to enable AZ transmitting ability*/
-- hsl_phy_mmd_reg_write(dev_id, first_phy_addr + 5, A_FALSE, MALIBU_PHY_MMD1_NUM,
-+ hsl_phy_mmd_reg_write(dev_id, PORT5_PHY_ID, A_FALSE, MALIBU_PHY_MMD1_NUM,
- MALIBU_PSGMII_MODE_CTRL, MALIBU_PHY_PSGMII_MODE_CTRL_ADJUST_VALUE);
-
- /* adjust psgmii serdes tx amp */
-- hsl_phy_mii_reg_write(dev_id, first_phy_addr + 5,
-+ hsl_phy_mii_reg_write(dev_id, PORT5_PHY_ID,
- MALIBU_PSGMII_TX_DRIVER_1_CTRL, MALIBU_PHY_PSGMII_REDUCE_SERDES_TX_AMP);
-
- /* to avoid psgmii module goes into hibernation, work with psgmii self test*/
-- hsl_phy_modify_mmd(dev_id, first_phy_addr + 4, A_FALSE, MALIBU_PHY_MMD3_NUM,
-+ hsl_phy_modify_mmd(dev_id, PORT4_PHY_ID, A_FALSE, MALIBU_PHY_MMD3_NUM,
- MALIBU_PHY_MMD3_ADDR_REMOTE_LOOPBACK_CTRL, BIT(1), 0);
-
- mode = ssdk_dt_global_get_mac_mode(dev_id, 0);
- if (mode == PORT_WRAPPER_PSGMII_FIBER)
-- malibu_phy_interface_set_mode(dev_id, first_phy_addr, PHY_PSGMII_FIBER);
-+ malibu_phy_interface_set_mode(dev_id, 0x0, PHY_PSGMII_FIBER);
-
- /*init combo phy address*/
-- combo_phy_addr = first_phy_addr+4;
-+ combo_phy_addr = PORT4_PHY_ID;
-
- return SW_OK;
- }
projects / openwrt / staging / hauke.git / commitdiff