Hi Simon,
On 25/07/23 12:55 pm, Simon Horman wrote:
> On Mon, Jul 24, 2023 at 04:59:27PM +0530, MD Danish Anwar wrote:
>> Add icssg_config.h / .c and icssg_classifier.c files. These are firmware
>> configuration and classification related files. These will be used by
>> ICSSG ethernet driver.
>>
>> Signed-off-by: MD Danish Anwar <danishanwar@xxxxxx>
>> Reviewed-by: Andrew Lunn <andrew@xxxxxxx>
>
> Hi Danish,
>
> some feedback from my side.
>
Thanks for the feedback.
> ...
>
>> diff --git a/drivers/net/ethernet/ti/icssg_classifier.c b/drivers/net/ethernet/ti/icssg_classifier.c
>
> ...
>
>> +void icssg_class_set_mac_addr(struct regmap *miig_rt, int slice, u8 *mac)
>
> This function appears to be unused.
> Perhaps it would be better placed in a later patch?
>
> Or perhaps not, if it makes it hard to split up the patches nicely.
> In which case, perhaps the __maybe_unused annotation could be added,
> temporarily.
>
Due to splitting the patch into 8-9 patches, I had to introduce these helper
APIs earlier. All these APIs are helper APIs, they will be used in patch 6
(Introduce ICSSG Prueth driver).
I had this concern that some APIs which will be used later but introduced
earlier can create some warnings, before splitting the patches.
I had raised this concern in [1] and asked Jakub if it would be OK to introduce
these APIs earlier. Jakub said it would be fine [2], so I went ahead with this
approach.
It will make very hard to break patches if these APIs are introduced and used
in same patch.
> Flagged by clang-16 W=1, and gcc=12 W=1 builds.
> Likewise for other issues flagged below regarding
> function declarations/definitions.
>
>> +{
>> + regmap_write(miig_rt, offs[slice].mac0, (u32)(mac[0] | mac[1] << 8 |
>> + mac[2] << 16 | mac[3] << 24));
>> + regmap_write(miig_rt, offs[slice].mac1, (u32)(mac[4] | mac[5] << 8));
>> +}
>> +
>> +/* disable all RX traffic */
>> +void icssg_class_disable(struct regmap *miig_rt, int slice)
>
> This function is only used in this file.
> Please consider making it static.
>
This is later used in icssg_prueth.c, that is why this is not static.
> ...
>
>> +void icssg_class_default(struct regmap *miig_rt, int slice, bool allmulti)
>
> This function also appears to be unused.
>
This is later used in icssg_prueth.c
> ...
>
>> +/* required for SAV check */
>> +void icssg_ft1_set_mac_addr(struct regmap *miig_rt, int slice, u8 *mac_addr)
>
> This function also appears to be unused.
>
This is later used in icssg_prueth.c
> ...
>
>> diff --git a/drivers/net/ethernet/ti/icssg_config.c b/drivers/net/ethernet/ti/icssg_config.c
>
> ...
>
>> +void icssg_config_ipg(struct prueth_emac *emac)
>
> This function is also only used in this file.
>
This is later used in icssg_prueth.c
> ...
>
>> +static void icssg_init_emac_mode(struct prueth *prueth)
>> +{
>> + /* When the device is configured as a bridge and it is being brought
>> + * back to the emac mode, the host mac address has to be set as 0.
>> + */
>> + u8 mac[ETH_ALEN] = { 0 };
>> +
>> + if (prueth->emacs_initialized)
>> + return;
>> +
>> + regmap_update_bits(prueth->miig_rt, FDB_GEN_CFG1,
>> + SMEM_VLAN_OFFSET_MASK, 0);
>> + regmap_write(prueth->miig_rt, FDB_GEN_CFG2, 0);
>> + /* Clear host MAC address */
>> + icssg_class_set_host_mac_addr(prueth->miig_rt, mac);
>
This is later used in icssg_prueth.c
> icssg_class_set_host_mac_addr() is defined in icssg_classifier.c
> but used here in icssg_config.c.
>
> Please consider providing a declaration of this function,
> ideally in a .h file.
>
The declaration of this function is added later(in patch 6) in icssg_prueth.h
> ...
>
>> +int emac_set_port_state(struct prueth_emac *emac,
>> + enum icssg_port_state_cmd cmd)
>
> This function also appears to be unused.
>
> ...
>
>> +void icssg_config_set_speed(struct prueth_emac *emac)
>
> Ditto.
>
Both these APIs are later used in icssg_prueth.c
> ...
[1] https://lore.kernel.org/all/17cd1e70-73bc-78d5-7e9d-7b133d6f464b@xxxxxx/
[2] https://lore.kernel.org/all/20230720081741.0c32d5e6@xxxxxxxxxx/
--
Thanks and Regards,
Danish.
