With commit b53202a8c3f7 ("realtek: switch to use generic MDIO accessor functions")
the phy access logic was enhanced. A quite big kernel patch was introduced that
allowed to make use of hardware-assisted page access like we have in the realtek
target. Basically it works the following way
- The enhanced bus intercepts page write accesses
- Currently selected pages are stored in internal vars.
- Finally only all-in-one-consistent bus/register accesses are issued
- It intercepted page changes and ensured that only a complete bus call
For the details see https://github.com/openwrt/openwrt/pull/16172
Switching over to newer kernels this patch is really hard to maintain. Its heavy
modifcations exist only in the realtek target. So it does not matter if we keep
it as an kernel modification or directly include it in our driver. To make it the
future brighter we drop this patch and take over its logic. Thus the kernel will
stay totally modification-free. What do we do?
1. Up to now the bus->priv structure directly pointed to ethernet->priv. Create an
explicit private structure rtl838x_bus_priv that not only holds the ethernet->priv
pointer but also space for some bus status tracking vars as well.
2. Wherever we use a reference to ethernet->priv directly replace that by an
additional indirection over the new rtl838x_bus_priv structure.
3. Up to now the phy flag PHY_HAS_REALTEK_PAGES identified that we can use the
alternative paged access from the patch. As this will be no longer available
remove it and provide read_page/write_page functions for each possible PHY.
These functions will be pretty standard as for other Realtek PHYs.
4. The existing mdio bus read/write function rely on the classic MII_ADDR_C45
flag - one interface for two access types. This mixup will be removed on the way
to kernel 6.6. In the future there will be two pairs of access functions. One for
classic access one for c45 style access. Rewrite our functions into 3 parts:
- a classic read/write function: ready for kernel 6.6
- a new c45 read/write function: ready for kernel 6.6
- a legacy read/write wrapper: for current 5.15 for the time being
When we switch to 6.6 we only need to remove the legacy wrappers and link the
new functions. Life can be so easy.
5. The classic read/write functions will incorporate the interception logic that
was originally in the patch.
6. The package convenience functions that were embedded in the patch get lost as
well. Rewrite them inside our phy driver.
Signed-off-by: Markus Stockhausen <markus.stockhausen@gmx.de>
[Minor checkpatch.pl cleanups]
Signed-off-by: Sander Vanheule <sander@svanheule.net>
Use led_setX to determine number of LEDs per port. Introduce macros to
calculate register value and shift for particular LED in a particular
set.
Problem with previous implementation is that it uses is10G status to
determine leds per port. However with usxgmii, driver sets 10g, 5g and
2.5g so even though there are only 2 leds per port it selects 4 leds per
port
This implementation relies on configured led_set node.
Acked-by: Simon Wunderlich <sw@simonwunderlich.de>
Signed-off-by: Harshal Gohel <hg@simonwunderlich.de>
We are missing a bunch of headers, which trigger errors on 6.1, probably
due to changed header-in-header dependencies. Best add them now.
Signed-off-by: Olliver Schinagl <oliver@schinagl.nl>
Comment unused part of realtek phy driver.
Fix compilation warning:
drivers/net/phy/rtl83xx-phy.c: In function 'rtl8380_configure_int_rtl8218b':
drivers/net/phy/rtl83xx-phy.c:747:21: error: unused variable 'ipd_flag' [-Werror=unused-variable]
747 | int ipd_flag = 1;
| ^~~~~~~~
drivers/net/phy/rtl83xx-phy.c: At top level:
drivers/net/phy/rtl83xx-phy.c:3333:13: error: 'rtl931x_sds_disable' defined but not used [-Werror=unused-function]
3333 | static void rtl931x_sds_disable(u32 sds)
| ^~~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors
Comment unused part of realtek dsa driver.
Fix compilation warning:
drivers/net/dsa/rtl83xx/common.c: In function 'rtl83xx_fib_event':
drivers/net/dsa/rtl83xx/common.c:1430:58: error: unused variable 'fen6_info' [-Werror=unused-variable]
1430 | struct fib6_entry_notifier_info *fen6_info = ptr;
| ^~~~~~~~~
drivers/net/dsa/rtl83xx/common.c: At top level:
drivers/net/dsa/rtl83xx/common.c:531:12: error: 'rtl83xx_octet_cntr_alloc' defined but not used [-Werror=unused-function]
531 | static int rtl83xx_octet_cntr_alloc(struct rtl838x_switch_priv *priv)
| ^~~~~~~~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors
Drop unused priv in realtek dsa driver.
Fix compilation warning:
drivers/net/dsa/rtl83xx/dsa.c: In function 'rtl83xx_port_lag_change':
drivers/net/dsa/rtl83xx/dsa.c:2016:37: error: unused variable 'priv' [-Werror=unused-variable]
2016 | struct rtl838x_switch_priv *priv = ds->priv;
| ^~~~
cc1: all warnings being treated as errors
Comment rtl838x_pie_rule_dump in realtek dsa driver for rtl83xx
Fix compilation warning:
drivers/net/dsa/rtl83xx/rtl838x.c:1294:13: error: 'rtl838x_pie_rule_dump' defined but not used [-Werror=unused-function]
1294 | static void rtl838x_pie_rule_dump(struct pie_rule *pr)
| ^~~~~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors
Comment multiple function in realtek dsa driver for rtl930x
Fix compilation warning:
drivers/net/dsa/rtl83xx/rtl930x.c:1463:12: error: 'rtl930x_l3_intf_add' defined but not used [-Werror=unused-function]
1463 | static int rtl930x_l3_intf_add(struct rtl838x_switch_priv *priv, struct rtl838x_l3_intf *intf)
| ^~~~~~~~~~~~~~~~~~~
drivers/net/dsa/rtl83xx/rtl930x.c:1414:12: error: 'rtl930x_l3_mtu_del' defined but not used [-Werror=unused-function]
1414 | static int rtl930x_l3_mtu_del(struct rtl838x_switch_priv *priv, int mtu)
| ^~~~~~~~~~~~~~~~~~
drivers/net/dsa/rtl83xx/rtl930x.c:995:12: error: 'rtl930x_l3_hash6' defined but not used [-Werror=unused-function]
995 | static u32 rtl930x_l3_hash6(struct in6_addr *ip6, int algorithm, bool move_dip)
| ^~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors
drivers/net/dsa/rtl83xx/rtl930x.c:1690:13: error: 'rtl930x_read_pie_fixed_fields' defined but not used [-Werror=unused-function]
1690 | static void rtl930x_read_pie_fixed_fields(u32 r[], struct pie_rule *pr)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/net/dsa/rtl83xx/rtl930x.c:1432:12: error: 'rtl930x_l3_mtu_add' defined but not used [-Werror=unused-function]
1432 | static int rtl930x_l3_mtu_add(struct rtl838x_switch_priv *priv, int mtu)
| ^~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors
Comment rtl931x_read_pie_fixed_fields in realtek dsa driver for rtl931x
Fix compilation warning:
drivers/net/dsa/rtl83xx/rtl931x.c:1116:13: error: 'rtl931x_read_pie_fixed_fields' defined but not used [-Werror=unused-function]
1116 | static void rtl931x_read_pie_fixed_fields(u32 r[], struct pie_rule *pr)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors
Comment rtl93xx_header_vlan_set in realtek ethernet driver for rtl838x
Fix compilation warning:
drivers/net/ethernet/rtl838x_eth.c: At top level:
drivers/net/ethernet/rtl838x_eth.c:164:13: error: 'rtl93xx_header_vlan_set' defined but not used [-Werror=unused-function]
164 | static void rtl93xx_header_vlan_set(struct p_hdr *h, int vlan)
| ^~~~~~~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
The net_event_work struct is allocated, but only freed in a single case.
Move the allocation to the branch where it is actually needed, and free
it after the work has been done.
Fixes: 03e1d93e0779 ("realtek: add driver support for routing offload")
Signed-off-by: Jan Hoffmann <jan@3e8.eu>
Linus prefers to have loop initializers nice and tightly scoped. In
OpenWRT this has been possible since 41a1a652fbd4 ("kernel: backport
gnu11 upgrade").
This patch cleans up variable scope while trying to do the above for
'simple for loops'.
This cleans up and simplifies some functions and code, and pulls in
variables to a smaller scope.
Signed-off-by: Olliver Schinagl <oliver@schinagl.nl>
The only exception to C++ style comments are SPDX license identifier
markers at the start of C files (even headers have C style markers).
Signed-off-by: Olliver Schinagl <oliver@schinagl.nl>
Fix some ugly whitepsaces and codestyle issues around the realtek sources.
While this is by no means perfect, it catches what it caught.
Signed-off-by: Olliver Schinagl <oliver@schinagl.nl>
These two functions are identical apart from writing different values to
the read/write bit. Create a new function rtl_table_exec to reduce code
duplication.
Also replace the unbounded busy-waiting loop. The new implementation may
sleep, but as the hardware typically responds before the first poll, any
callers doing many table accesses still need to make sure not to block
other kernel tasks themselves.
So far, polling timeout errors are only handled by logging an error, but
a return value is added to allow proper handling in the future.
Signed-off-by: Jan Hoffmann <jan@3e8.eu>
This function currently prints three messages for every switch port at
KERN_INFO level. This takes a considerable amount of time during bootup
and can even trigger an external watchdog.
Replace these log messages by a single one at KERN_DEBUG level.
Signed-off-by: Jan Hoffmann <jan@3e8.eu>
