linux-kernel - Re: [PATCH 2/2] dmaengine: idxd: Add new DSA and IAA device IDs on Diamond Rapids platform

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Message-ID: <f3c438bd-7346-62ce-5d5f-86b97f8cdca1@intel.com>
Date: Wed, 28 Aug 2024 16:07:27 -0700
From: Fenghua Yu <fenghua.yu@...el.com>
To: Dave Jiang <dave.jiang@...el.com>, Vinod Koul <vkoul@...nel.org>
CC: <dmaengine@...r.kernel.org>, linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/2] dmaengine: idxd: Add new DSA and IAA device IDs on
 Diamond Rapids platform

Hi, Dave,

On 8/28/24 15:45, Dave Jiang wrote:
> 
> 
> On 8/28/24 3:42 PM, Fenghua Yu wrote:
>> A new DSA device ID, 0x1212, and a new IAA device ID, 0x1216, are
>> introduced on Diamond Rapids platform. Add the device IDs to the IDXD
>> driver.
>>
>> Signed-off-by: Fenghua Yu <fenghua.yu@...el.com>
>> ---
>>   drivers/dma/idxd/init.c | 4 ++++
>>   include/linux/pci_ids.h | 2 ++
>>   2 files changed, 6 insertions(+)
>>
>> diff --git a/drivers/dma/idxd/init.c b/drivers/dma/idxd/init.c
>> index 415b17b0acd0..21e3cff66f77 100644
>> --- a/drivers/dma/idxd/init.c
>> +++ b/drivers/dma/idxd/init.c
>> @@ -71,9 +71,13 @@ static struct pci_device_id idxd_pci_tbl[] = {
>>   	{ PCI_DEVICE_DATA(INTEL, DSA_SPR0, &idxd_driver_data[IDXD_TYPE_DSA]) },
>>   	/* DSA on GNR-D platforms */
>>   	{ PCI_DEVICE_DATA(INTEL, DSA_GNRD, &idxd_driver_data[IDXD_TYPE_DSA]) },
>> +	/* DSA on DMR platforms */
>> +	{ PCI_DEVICE_DATA(INTEL, DSA_DMR, &idxd_driver_data[IDXD_TYPE_DSA]) },
>>   
>>   	/* IAX ver 1.0 platforms */
>>   	{ PCI_DEVICE_DATA(INTEL, IAX_SPR0, &idxd_driver_data[IDXD_TYPE_IAX]) },
>> +	/* IAX on DMR platforms */
>> +	{ PCI_DEVICE_DATA(INTEL, IAX_DMR, &idxd_driver_data[IDXD_TYPE_IAX]) },
> 
> IAA_DMR?

Sure. Will fix this.

Also add something in the commit message? "Use IAA in new code instead 
of old name IAX. The IAX name (e.g. IDXD_TYPE_IAX) is still kept in 
legacy code"

> 
>>   	{ 0, }
>>   };
>>   MODULE_DEVICE_TABLE(pci, idxd_pci_tbl);
>> diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h
>> index ff99047dac44..e15ebb3942ae 100644
>> --- a/include/linux/pci_ids.h
>> +++ b/include/linux/pci_ids.h
>> @@ -2707,6 +2707,8 @@
>>   #define PCI_DEVICE_ID_INTEL_82815_CGC	0x1132
>>   #define PCI_DEVICE_ID_INTEL_SST_TNG	0x119a
>>   #define PCI_DEVICE_ID_INTEL_DSA_GNRD	0x11fb
>> +#define PCI_DEVICE_ID_INTEL_DSA_DMR	0x1212
>> +#define PCI_DEVICE_ID_INTEL_IAX_DMR	0x1216
> 
> s/IAX/IAA/ ?

Ditto.

> 
>>   #define PCI_DEVICE_ID_INTEL_82092AA_0	0x1221
>>   #define PCI_DEVICE_ID_INTEL_82437	0x122d
>>   #define PCI_DEVICE_ID_INTEL_82371FB_0	0x122e

Thanks.

-Fenghua