linux-kernel - Re: [PATCH] fpga: dfl-pci: add PCI subdevice ID for Intel D5005 card

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Date: Fri, 26 Apr 2024 12:10:19 +0800
From: Xu Yilun <yilun.xu@...ux.intel.com>
To: Peter Colberg <peter.colberg@...el.com>
Cc: Wu Hao <hao.wu@...el.com>, Tom Rix <trix@...hat.com>,
	Moritz Fischer <mdf@...nel.org>, Xu Yilun <yilun.xu@...el.com>,
	linux-fpga@...r.kernel.org, linux-kernel@...r.kernel.org,
	Russ Weight <russ.weight@...ux.dev>,
	Marco Pagani <marpagan@...hat.com>,
	Matthew Gerlach <matthew.gerlach@...ux.intel.com>
Subject: Re: [PATCH] fpga: dfl-pci: add PCI subdevice ID for Intel D5005 card

On Mon, Apr 22, 2024 at 07:02:57PM -0400, Peter Colberg wrote:
> Add PCI subdevice ID for the Intel D5005 Stratix 10 FPGA card as
> used with the Open FPGA Stack (OFS) FPGA Interface Manager (FIM).
> 
> Unlike the Intel D5005 PAC FIM which exposed a separate PCI device ID,
> the OFS FIM reuses the same device ID for all DFL-based FPGA cards
> and differentiates on the subdevice ID. The subdevice ID values were
> chosen as the numeric part of the FPGA card names in hexadecimal.
> 
> Link: https://github.com/OFS/dfl-feature-id/pull/4

Any reason to put the Link in changelog. I didn't see it provide any
extra info.

> Signed-off-by: Peter Colberg <peter.colberg@...el.com>
> Reviewed-by: Matthew Gerlach <matthew.gerlach@...ux.intel.com>

Besides,

Acked-by: Xu Yilun <yilun.xu@...el.com>

> ---
> This patch was applied to Linux v6.9-rc5 and tested on an Intel D5005
> card flashed with the latest released OFS 2024.1-1 D5005 FIM.
> 
> # fpgainfo fme D8:00.0
> Intel FPGA Programmable Acceleration Card D5005
> Board Management Controller, MAX10 NIOS FW version: 2.0.12 
> Board Management Controller, MAX10 Build version: 2.0.8 
> //****** FME ******//
> Interface                        : DFL
> Object Id                        : 0xED00002
> PCIe s:b:d.f                     : 0000:D8:00.0
> Vendor Id                        : 0x8086
> Device Id                        : 0xBCCE
> SubVendor Id                     : 0x8086
> SubDevice Id                     : 0x138D
> Socket Id                        : 0x00
> Ports Num                        : 01
> Bitstream Id                     : 0x4010002183C88A9
> Bitstream Version                : 4.0.1
> Pr Interface Id                  : a195b6f7-cf23-5a2b-8ef9-1161e184ec4e
> Boot Page                        : user
> 
> Link: https://github.com/OFS/ofs-d5005/releases/tag/ofs-2024.1-1
> ---
> The missing subdevice ID 0x138d was noticed while testing the patch
> series "fpga: dfl: fix kernel warning on port release/assign for SRIOV"
> applied to v6.9-rc4 on an Intel D5005 card. The absence of the subdevice
> ID was shadowed by an internal patch in the downstream Linux DFL kernel
> ("fpga: dfl: Add wildcard sub-device ID for intel DFL devs").
> 
> Link: https://github.com/OFS/linux-dfl/commit/27d3d71824f086acae86e41a87b591838b7fa9d1
> ---
>  drivers/fpga/dfl-pci.c | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/drivers/fpga/dfl-pci.c b/drivers/fpga/dfl-pci.c
> index 98b8fd16183e..80cac3a5f976 100644
> --- a/drivers/fpga/dfl-pci.c
> +++ b/drivers/fpga/dfl-pci.c
> @@ -78,6 +78,7 @@ static void cci_pci_free_irq(struct pci_dev *pcidev)
>  #define PCIE_DEVICE_ID_SILICOM_PAC_N5011	0x1001
>  #define PCIE_DEVICE_ID_INTEL_DFL		0xbcce
>  /* PCI Subdevice ID for PCIE_DEVICE_ID_INTEL_DFL */
> +#define PCIE_SUBDEVICE_ID_INTEL_D5005		0x138d
>  #define PCIE_SUBDEVICE_ID_INTEL_N6000		0x1770
>  #define PCIE_SUBDEVICE_ID_INTEL_N6001		0x1771
>  #define PCIE_SUBDEVICE_ID_INTEL_C6100		0x17d4
> @@ -101,6 +102,8 @@ static struct pci_device_id cci_pcie_id_tbl[] = {
>  	{PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCIE_DEVICE_ID_INTEL_PAC_D5005_VF),},
>  	{PCI_DEVICE(PCI_VENDOR_ID_SILICOM_DENMARK, PCIE_DEVICE_ID_SILICOM_PAC_N5010),},
>  	{PCI_DEVICE(PCI_VENDOR_ID_SILICOM_DENMARK, PCIE_DEVICE_ID_SILICOM_PAC_N5011),},
> +	{PCI_DEVICE_SUB(PCI_VENDOR_ID_INTEL, PCIE_DEVICE_ID_INTEL_DFL,
> +			PCI_VENDOR_ID_INTEL, PCIE_SUBDEVICE_ID_INTEL_D5005),},
>  	{PCI_DEVICE_SUB(PCI_VENDOR_ID_INTEL, PCIE_DEVICE_ID_INTEL_DFL,
>  			PCI_VENDOR_ID_INTEL, PCIE_SUBDEVICE_ID_INTEL_N6000),},
>  	{PCI_DEVICE_SUB(PCI_VENDOR_ID_INTEL, PCIE_DEVICE_ID_INTEL_DFL_VF,
> -- 
> 2.44.0
> 
>