linux-kernel - Re: [PATCH] bus: mhi: host: pci_generic: Add support for IP

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Date:   Wed, 31 May 2023 12:00:03 +0530
From:   Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
To:     mhi@...ts.linux.dev, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     loic.poulain@...aro.org, quic_krichai@...cinc.com
Subject: Re: [PATCH] bus: mhi: host: pci_generic: Add support for IP_SW0
 channels

On Fri, May 19, 2023 at 07:28:03PM +0530, Manivannan Sadhasivam wrote:
> IP_SW0 channels are used to transfer data over the networking interface
> between MHI endpoint and the host. Define the channels in the MHI v1
> channel config along with dedicated event rings.
> 
> Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>

Applied to mhi-next!

- Mani

> ---
>  drivers/bus/mhi/host/pci_generic.c | 26 ++++++++++++++++++++++----
>  1 file changed, 22 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/bus/mhi/host/pci_generic.c b/drivers/bus/mhi/host/pci_generic.c
> index db0a0b062d8e..70e37c490150 100644
> --- a/drivers/bus/mhi/host/pci_generic.c
> +++ b/drivers/bus/mhi/host/pci_generic.c
> @@ -212,6 +212,19 @@ struct mhi_pci_dev_info {
>  		.offload_channel = false,	\
>  	}
>  
> +#define MHI_EVENT_CONFIG_SW_DATA(ev_ring, el_count) \
> +	{					\
> +		.num_elements = el_count,	\
> +		.irq_moderation_ms = 0,		\
> +		.irq = (ev_ring) + 1,		\
> +		.priority = 1,			\
> +		.mode = MHI_DB_BRST_DISABLE,	\
> +		.data_type = MHI_ER_DATA,	\
> +		.hardware_event = false,	\
> +		.client_managed = false,	\
> +		.offload_channel = false,	\
> +	}
> +
>  #define MHI_EVENT_CONFIG_HW_DATA(ev_ring, el_count, ch_num) \
>  	{					\
>  		.num_elements = el_count,	\
> @@ -237,8 +250,10 @@ static const struct mhi_channel_config modem_qcom_v1_mhi_channels[] = {
>  	MHI_CHANNEL_CONFIG_DL_AUTOQUEUE(21, "IPCR", 8, 0),
>  	MHI_CHANNEL_CONFIG_UL_FP(34, "FIREHOSE", 32, 0),
>  	MHI_CHANNEL_CONFIG_DL_FP(35, "FIREHOSE", 32, 0),
> -	MHI_CHANNEL_CONFIG_HW_UL(100, "IP_HW0", 128, 2),
> -	MHI_CHANNEL_CONFIG_HW_DL(101, "IP_HW0", 128, 3),
> +	MHI_CHANNEL_CONFIG_UL(46, "IP_SW0", 64, 2),
> +	MHI_CHANNEL_CONFIG_DL(47, "IP_SW0", 64, 3),
> +	MHI_CHANNEL_CONFIG_HW_UL(100, "IP_HW0", 128, 4),
> +	MHI_CHANNEL_CONFIG_HW_DL(101, "IP_HW0", 128, 5),
>  };
>  
>  static struct mhi_event_config modem_qcom_v1_mhi_events[] = {
> @@ -246,9 +261,12 @@ static struct mhi_event_config modem_qcom_v1_mhi_events[] = {
>  	MHI_EVENT_CONFIG_CTRL(0, 64),
>  	/* DIAG dedicated event ring */
>  	MHI_EVENT_CONFIG_DATA(1, 128),
> +	/* Software channels dedicated event ring */
> +	MHI_EVENT_CONFIG_SW_DATA(2, 64),
> +	MHI_EVENT_CONFIG_SW_DATA(3, 64),
>  	/* Hardware channels request dedicated hardware event rings */
> -	MHI_EVENT_CONFIG_HW_DATA(2, 1024, 100),
> -	MHI_EVENT_CONFIG_HW_DATA(3, 2048, 101)
> +	MHI_EVENT_CONFIG_HW_DATA(4, 1024, 100),
> +	MHI_EVENT_CONFIG_HW_DATA(5, 2048, 101)
>  };
>  
>  static const struct mhi_controller_config modem_qcom_v1_mhiv_config = {
> -- 
> 2.25.1
> 

-- 
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