kernel/linux.git/include/soc/mscc/ocelot.h, branch v6.3.2

net: mscc: ocelot: expose ocelot_reset routine

2023-01-31T05:07:20+00:00

Resetting the switch core is the same whether it is done internally or externally. Move this routine to the ocelot library so it can be used by other drivers. Signed-off-by: Colin Foster Reviewed-by: Florian Fainelli Reviewed-by: Vladimir Oltean Tested-by: Vladimir Oltean # regression Signed-off-by: Jakub Kicinski

net: mscc: ocelot: expose ocelot wm functions

2023-01-31T05:07:20+00:00

Expose ocelot_wm functions so they can be shared with other drivers. Signed-off-by: Colin Foster Reviewed-by: Vladimir Oltean Reviewed-by: Florian Fainelli Tested-by: Vladimir Oltean # regression Signed-off-by: Jakub Kicinski

net: mscc: ocelot: add MAC Merge layer support for VSC9959

2023-01-23T12:44:18+00:00

Felix (VSC9959) has a DEV_GMII:MM_CONFIG block composed of 2 registers (ENABLE_CONFIG and VERIF_CONFIG). Because the MAC Merge statistics and pMAC statistics are already in the Ocelot switch lib even if just Felix supports them, I'm adding support for the whole MAC Merge layer in the common Ocelot library too. There is an interrupt (shared with the PTP interrupt) which signals changes to the MM verification state. This is done because the preemptible traffic classes should be committed to hardware only once the verification procedure has declared the link partner of being capable of receiving preemptible frames. We implement ethtool getters and setters for the MAC Merge layer state. The "TX enabled" and "verify status" are taken from the IRQ handler, using a mutex to ensure serialized access. Signed-off-by: Vladimir Oltean Signed-off-by: David S. Miller

net: mscc: ocelot: export ethtool MAC Merge stats for Felix VSC9959

2023-01-23T12:44:18+00:00

The Felix VSC9959 switch supports frame preemption and has a MAC Merge layer. In addition to the structured stats that exist for the eMAC, export the counters associated with its pMAC (pause, RMON, MAC, PHY, control) plus the high-level MAC Merge layer stats. The unstructured ethtool counters, as well as the rtnl_link_stats64 were left to report only the eMAC counters. Because statistics processing is quite self-contained in ocelot_stats.c now, I've opted for introducing an ocelot->mm_supported bool, based on which the common switch lib does everything, rather than pushing the TSN-specific code in felix_vsc9959.c, as happens for other TSN stuff. Signed-off-by: Vladimir Oltean Signed-off-by: David S. Miller

net: mscc: ocelot: remove unnecessary exposure of stats structures

2022-11-22T14:36:43+00:00

Since commit 4d1d157fb6a4 ("net: mscc: ocelot: share the common stat definitions between all drivers") there is no longer a need to share the stats structures to the world. Relocate these definitions to inside ocelot_stats.c instead of a global include header. Signed-off-by: Colin Foster Reviewed-by: Vladimir Oltean Signed-off-by: Paolo Abeni

net: mscc: ocelot: remove redundant stats_layout pointers

2022-11-22T14:36:43+00:00

Ever since commit 4d1d157fb6a4 ("net: mscc: ocelot: share the common stat definitions between all drivers") the stats_layout entry in ocelot and felix drivers have become redundant. Remove the unnecessary code. Suggested-by: Vladimir Oltean Signed-off-by: Colin Foster Reviewed-by: Vladimir Oltean Signed-off-by: Paolo Abeni

net: dsa: felix: add support for changing DSA master

2022-09-20T08:32:36+00:00

Changing the DSA master means different things depending on the tagging protocol in use. For NPI mode ("ocelot" and "seville"), there is a single port which can be configured as NPI, but DSA only permits changing the CPU port affinity of user ports one by one. So changing a user port to a different NPI port globally changes what the NPI port is, and breaks the user ports still using the old one. To address this while still permitting the change of the NPI port, require that the user ports which are still affine to the old NPI port are down, and cannot be brought up until they are all affine to the same NPI port. The tag_8021q mode ("ocelot-8021q") is more flexible, in that each user port can be freely assigned to one CPU port or to the other. This works by filtering host addresses towards both tag_8021q CPU ports, and then restricting the forwarding from a certain user port only to one of the two tag_8021q CPU ports. Additionally, the 2 tag_8021q CPU ports can be placed in a LAG. This works by enabling forwarding via PGID_SRC from a certain user port towards the logical port ID containing both tag_8021q CPU ports, but then restricting forwarding per packet, via the LAG hash codes in PGID_AGGR, to either one or the other. When we change the DSA master to a LAG device, DSA guarantees us that the LAG has at least one lower interface as a physical DSA master. But DSA masters can come and go as lowers of that LAG, and ds->ops->port_change_master() will not get called, because the DSA master is still the same (the LAG). So we need to hook into the ds->ops->port_lag_{join,leave} calls on the CPU ports and update the logical port ID of the LAG that user ports are assigned to. Signed-off-by: Vladimir Oltean Signed-off-by: Paolo Abeni

net: dsa: propagate extack to port_lag_join

2022-09-20T08:32:36+00:00

Drivers could refuse to offload a LAG configuration for a variety of reasons, mainly having to do with its TX type. Additionally, since DSA masters may now also be LAG interfaces, and this will translate into a call to port_lag_join on the CPU ports, there may be extra restrictions there. Propagate the netlink extack to this DSA method in order for drivers to give a meaningful error message back to the user. Signed-off-by: Vladimir Oltean Signed-off-by: Paolo Abeni

net: mscc: ocelot: share the common stat definitions between all drivers

2022-09-09T09:59:12+00:00

All switch families supported by the ocelot lib (ocelot, felix, seville) export the same registers so far. But for example felix also has TSN counters, while the others don't. To reduce the bloat even further, create an OCELOT_COMMON_STATS() macro which just lists all stats that are common between switches. The array elements are still replicated among all of vsc9959_stats_layout, vsc9953_stats_layout and ocelot_stats_layout. Signed-off-by: Vladimir Oltean Signed-off-by: David S. Miller

net: mscc: ocelot: minimize definitions for stats

2022-09-09T09:59:12+00:00

The current definition of struct ocelot_stat_layout is long-winded (4 lines per entry, and we have hundreds of entries), so we could make an effort to use the C preprocessor and reduce the line count. Create an implicit correspondence between enum ocelot_reg, which tells us the register address (SYS_COUNT_RX_OCTETS etc) and enum ocelot_stat which allows us to index the ocelot->stats array (OCELOT_STAT_RX_OCTETS etc), and don't require us to specify both when we define what stats each switch family has. Create an OCELOT_STAT() macro that pairs only an enum ocelot_stat to an enum ocelot_reg, and an OCELOT_STAT_ETHTOOL() macro which also contains a name exported to the unstructured ethtool -S stringset API. For now, we define all counters as having the OCELOT_STAT_ETHTOOL() kind, but we will add more counters in the future which are not exported to the unstructured ethtool -S. Signed-off-by: Vladimir Oltean Signed-off-by: David S. Miller