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SubjectRe: [PATCH] firmware: ti_sci: rm: Add support for tx_tdtype parameter for tx channel
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On 25/10/2019 11:47, Peter Ujfalusi wrote:
> The system controller's resource manager have support for configuring the
> TDTYPE of TCHAN_CFG register on j721e.
> With this parameter the teardown completion can be controlled:
> TDTYPE == 0: Return without waiting for peer to complete the teardown
> TDTYPE == 1: Wait for peer to complete the teardown
>
> Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>

Reviewed-by: Tero Kristo <t-kristo@ti.com>

> ---
> Hi,
>
> I know it is kind of getting late for 5.5, but can you consider this small
> addition so I can add the support for it in the initial DMA driver?
>
> Thanks and regards,
> Peter
>
> drivers/firmware/ti_sci.c | 1 +
> drivers/firmware/ti_sci.h | 7 +++++++
> include/linux/soc/ti/ti_sci_protocol.h | 2 ++
> 3 files changed, 10 insertions(+)
>
> diff --git a/drivers/firmware/ti_sci.c b/drivers/firmware/ti_sci.c
> index 4126be9e3216..f13e4a96f3b7 100644
> --- a/drivers/firmware/ti_sci.c
> +++ b/drivers/firmware/ti_sci.c
> @@ -2412,6 +2412,7 @@ static int ti_sci_cmd_rm_udmap_tx_ch_cfg(const struct ti_sci_handle *handle,
> req->fdepth = params->fdepth;
> req->tx_sched_priority = params->tx_sched_priority;
> req->tx_burst_size = params->tx_burst_size;
> + req->tx_tdtype = params->tx_tdtype;
>
> ret = ti_sci_do_xfer(info, xfer);
> if (ret) {
> diff --git a/drivers/firmware/ti_sci.h b/drivers/firmware/ti_sci.h
> index f0d068c03944..255327171dae 100644
> --- a/drivers/firmware/ti_sci.h
> +++ b/drivers/firmware/ti_sci.h
> @@ -910,6 +910,7 @@ struct rm_ti_sci_msg_udmap_rx_flow_opt_cfg {
> * 12 - Valid bit for @ref ti_sci_msg_rm_udmap_tx_ch_cfg::tx_credit_count
> * 13 - Valid bit for @ref ti_sci_msg_rm_udmap_tx_ch_cfg::fdepth
> * 14 - Valid bit for @ref ti_sci_msg_rm_udmap_tx_ch_cfg::tx_burst_size
> + * 15 - Valid bit for @ref ti_sci_msg_rm_udmap_tx_ch_cfg::tx_tdtype
> *
> * @nav_id: SoC device ID of Navigator Subsystem where tx channel is located
> *
> @@ -973,6 +974,11 @@ struct rm_ti_sci_msg_udmap_rx_flow_opt_cfg {
> *
> * @tx_burst_size: UDMAP transmit channel burst size configuration to be
> * programmed into the tx_burst_size field of the TCHAN_TCFG register.
> + *
> + * @tx_tdtype: UDMAP transmit channel teardown type configuration to be
> + * programmed into the tdtype field of the TCHAN_TCFG register:
> + * 0 - Return immediately
> + * 1 - Wait for completion message from remote peer
> */
> struct ti_sci_msg_rm_udmap_tx_ch_cfg_req {
> struct ti_sci_msg_hdr hdr;
> @@ -994,6 +1000,7 @@ struct ti_sci_msg_rm_udmap_tx_ch_cfg_req {
> u16 fdepth;
> u8 tx_sched_priority;
> u8 tx_burst_size;
> + u8 tx_tdtype;
> } __packed;
>
> /**
> diff --git a/include/linux/soc/ti/ti_sci_protocol.h b/include/linux/soc/ti/ti_sci_protocol.h
> index 9531ec823298..f3aed0b91564 100644
> --- a/include/linux/soc/ti/ti_sci_protocol.h
> +++ b/include/linux/soc/ti/ti_sci_protocol.h
> @@ -342,6 +342,7 @@ struct ti_sci_msg_rm_udmap_tx_ch_cfg {
> #define TI_SCI_MSG_VALUE_RM_UDMAP_CH_TX_SUPR_TDPKT_VALID BIT(11)
> #define TI_SCI_MSG_VALUE_RM_UDMAP_CH_TX_CREDIT_COUNT_VALID BIT(12)
> #define TI_SCI_MSG_VALUE_RM_UDMAP_CH_TX_FDEPTH_VALID BIT(13)
> +#define TI_SCI_MSG_VALUE_RM_UDMAP_CH_TX_TDTYPE_VALID BIT(15)
> u16 nav_id;
> u16 index;
> u8 tx_pause_on_err;
> @@ -359,6 +360,7 @@ struct ti_sci_msg_rm_udmap_tx_ch_cfg {
> u16 fdepth;
> u8 tx_sched_priority;
> u8 tx_burst_size;
> + u8 tx_tdtype;
> };
>
> /**
>

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