netdev - Re: [PATCH v15 06/22] sfc: make regs setup with checking and set media ready

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Message-ID: <7c01b39c-72b4-4530-8ec2-f6e68e12c4a3@amd.com>
Date: Wed, 14 May 2025 08:50:18 +0100
From: Alejandro Lucero Palau <alucerop@....com>
To: "Cheatham, Benjamin" <bcheatha@....com>, alejandro.lucero-palau@....com
Cc: Martin Habets <habetsm.xilinx@...il.com>, Zhi Wang <zhi@...dia.com>,
 Edward Cree <ecree.xilinx@...il.com>,
 Jonathan Cameron <Jonathan.Cameron@...wei.com>, linux-cxl@...r.kernel.org,
 netdev@...r.kernel.org, dan.j.williams@...el.com, edward.cree@....com,
 davem@...emloft.net, kuba@...nel.org, pabeni@...hat.com,
 edumazet@...gle.com, dave.jiang@...el.com,
 Ben Cheatham <Benjamin.Cheatham@....com>
Subject: Re: [PATCH v15 06/22] sfc: make regs setup with checking and set
 media ready


On 5/13/25 19:27, Cheatham, Benjamin wrote:
> On 5/12/2025 11:10 AM, alejandro.lucero-palau@....com wrote:
>> From: Alejandro Lucero <alucerop@....com>
>>
>> Use cxl code for registers discovery and mapping.
>>
>> Validate capabilities found based on those registers against expected
>> capabilities.
>>
>> Set media ready explicitly as there is no means for doing so without
>> a mailbox and without the related cxl register, not mandatory for type2.
>>
>> Signed-off-by: Alejandro Lucero <alucerop@....com>
>> Reviewed-by: Martin Habets <habetsm.xilinx@...il.com>
>> Reviewed-by: Zhi Wang <zhi@...dia.com>
>> Acked-by: Edward Cree <ecree.xilinx@...il.com>
>> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@...wei.com>
>> ---
>>   drivers/net/ethernet/sfc/efx_cxl.c | 27 +++++++++++++++++++++++++++
>>   1 file changed, 27 insertions(+)
>>
>> diff --git a/drivers/net/ethernet/sfc/efx_cxl.c b/drivers/net/ethernet/sfc/efx_cxl.c
>> index 753d5b7d49b6..79427a85a1b7 100644
>> --- a/drivers/net/ethernet/sfc/efx_cxl.c
>> +++ b/drivers/net/ethernet/sfc/efx_cxl.c
>> @@ -19,10 +19,13 @@
>>   
>>   int efx_cxl_init(struct efx_probe_data *probe_data)
>>   {
>> +	DECLARE_BITMAP(expected, CXL_MAX_CAPS) = {};
>> +	DECLARE_BITMAP(found, CXL_MAX_CAPS) = {};
>>   	struct efx_nic *efx = &probe_data->efx;
>>   	struct pci_dev *pci_dev = efx->pci_dev;
>>   	struct efx_cxl *cxl;
>>   	u16 dvsec;
>> +	int rc;
>>   
>>   	probe_data->cxl_pio_initialised = false;
>>   
>> @@ -43,6 +46,30 @@ int efx_cxl_init(struct efx_probe_data *probe_data)
>>   	if (!cxl)
>>   		return -ENOMEM;
>>   
>> +	set_bit(CXL_DEV_CAP_HDM, expected);
>> +	set_bit(CXL_DEV_CAP_HDM, expected);
> You have duplicate lines here. I think I pointed this out a couple of
> revisions ago, but it probably got missed.
>
> Thanks,
> Ben
>

Hi Ben,


Yes, apologies. I missed this one.


I'll definitely fix it in v16 later today.


Thank you!