linux-kernel - Re: [v2] PCI: cadence: Fix sending message with data or without data

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Message-ID: <c1f39ecf-0c2d-4c04-9681-fc8ca5b41334@163.com>
Date: Fri, 7 Feb 2025 18:59:33 +0800
From: Hans Zhang <18255117159@....com>
To: lpieralisi@...nel.org
Cc: kw@...ux.com, manivannan.sadhasivam@...aro.org, robh@...nel.org,
 bhelgaas@...gle.com, bwawrzyn@...co.com, cassel@...nel.org,
 wojciech.jasko-EXT@...tinental-corporation.com, a-verma1@...com,
 linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org, rockswang7@...il.com
Subject: Re: [v2] PCI: cadence: Fix sending message with data or without data



On 2025/2/7 18:37, Hans Zhang wrote:
> View from cdns document cdn_pcie_gen4_hpa_axi_ips_ug_v1.04.pdf.
> In section 9.1.7.1 AXI Subordinate to PCIe Address Translation
> Registers below:
> 
> axi_s_awaddr bits 16 is 1 for MSG with data and 0 for MSG without data.
> 
> Signed-off-by: hans.zhang <hans.zhang@...tech.com>

I'm so sorry, guys.
The correct Signed-off should be: Hans Zhang <18255117159@....com>

> ---
> Changes since v1:
> - Change email number
> ---
>   drivers/pci/controller/cadence/pcie-cadence-ep.c | 3 +--
>   drivers/pci/controller/cadence/pcie-cadence.h    | 2 +-
>   2 files changed, 2 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/pci/controller/cadence/pcie-cadence-ep.c b/drivers/pci/controller/cadence/pcie-cadence-ep.c
> index e0cc4560dfde..0bf4cde34f51 100644
> --- a/drivers/pci/controller/cadence/pcie-cadence-ep.c
> +++ b/drivers/pci/controller/cadence/pcie-cadence-ep.c
> @@ -352,8 +352,7 @@ static void cdns_pcie_ep_assert_intx(struct cdns_pcie_ep *ep, u8 fn, u8 intx,
>   	spin_unlock_irqrestore(&ep->lock, flags);
>   
>   	offset = CDNS_PCIE_NORMAL_MSG_ROUTING(MSG_ROUTING_LOCAL) |
> -		 CDNS_PCIE_NORMAL_MSG_CODE(msg_code) |
> -		 CDNS_PCIE_MSG_NO_DATA;
> +		 CDNS_PCIE_NORMAL_MSG_CODE(msg_code);
>   	writel(0, ep->irq_cpu_addr + offset);
>   }
>   
> diff --git a/drivers/pci/controller/cadence/pcie-cadence.h b/drivers/pci/controller/cadence/pcie-cadence.h
> index f5eeff834ec1..39ee9945c903 100644
> --- a/drivers/pci/controller/cadence/pcie-cadence.h
> +++ b/drivers/pci/controller/cadence/pcie-cadence.h
> @@ -246,7 +246,7 @@ struct cdns_pcie_rp_ib_bar {
>   #define CDNS_PCIE_NORMAL_MSG_CODE_MASK		GENMASK(15, 8)
>   #define CDNS_PCIE_NORMAL_MSG_CODE(code) \
>   	(((code) << 8) & CDNS_PCIE_NORMAL_MSG_CODE_MASK)
> -#define CDNS_PCIE_MSG_NO_DATA			BIT(16)
> +#define CDNS_PCIE_MSG_DATA			BIT(16)
>   
>   struct cdns_pcie;
>   
> 
> base-commit: bb066fe812d6fb3a9d01c073d9f1e2fd5a63403b