On Wed, Apr 07, 2021 at 10:41:00AM +0200, Loic Poulain wrote:
> When device enters flash programmer context (FP), it exposes firehose
> protocol through the EDL dedicated channels.
>
> Signed-off-by: Loic Poulain <loic.poulain@xxxxxxxxxx>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx>
Thanks,
Mani
> ---
> drivers/bus/mhi/pci_generic.c | 35 +++++++++++++++++++++++++++++++++++
> 1 file changed, 35 insertions(+)
>
> diff --git a/drivers/bus/mhi/pci_generic.c b/drivers/bus/mhi/pci_generic.c
> index 544853c..fda3e88d 100644
> --- a/drivers/bus/mhi/pci_generic.c
> +++ b/drivers/bus/mhi/pci_generic.c
> @@ -145,6 +145,36 @@ struct mhi_pci_dev_info {
> .doorbell_mode_switch = false, \
> }
>
> +#define MHI_CHANNEL_CONFIG_UL_FP(ch_num, ch_name, el_count, ev_ring) \
> + { \
> + .num = ch_num, \
> + .name = ch_name, \
> + .num_elements = el_count, \
> + .event_ring = ev_ring, \
> + .dir = DMA_TO_DEVICE, \
> + .ee_mask = BIT(MHI_EE_FP), \
> + .pollcfg = 0, \
> + .doorbell = MHI_DB_BRST_DISABLE, \
> + .lpm_notify = false, \
> + .offload_channel = false, \
> + .doorbell_mode_switch = false, \
> + } \
> +
> +#define MHI_CHANNEL_CONFIG_DL_FP(ch_num, ch_name, el_count, ev_ring) \
> + { \
> + .num = ch_num, \
> + .name = ch_name, \
> + .num_elements = el_count, \
> + .event_ring = ev_ring, \
> + .dir = DMA_FROM_DEVICE, \
> + .ee_mask = BIT(MHI_EE_FP), \
> + .pollcfg = 0, \
> + .doorbell = MHI_DB_BRST_DISABLE, \
> + .lpm_notify = false, \
> + .offload_channel = false, \
> + .doorbell_mode_switch = false, \
> + }
> +
> #define MHI_EVENT_CONFIG_DATA(ev_ring, el_count) \
> { \
> .num_elements = el_count, \
> @@ -181,6 +211,8 @@ static const struct mhi_channel_config modem_qcom_v1_mhi_channels[] = {
> MHI_CHANNEL_CONFIG_DL(15, "QMI", 4, 0),
> MHI_CHANNEL_CONFIG_UL(20, "IPCR", 8, 0),
> MHI_CHANNEL_CONFIG_DL(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),
> };
> @@ -241,6 +273,9 @@ static const struct mhi_channel_config mhi_quectel_em1xx_channels[] = {
> MHI_CHANNEL_CONFIG_DL(13, "MBIM", 32, 0),
> MHI_CHANNEL_CONFIG_UL(32, "DUN", 32, 0),
> MHI_CHANNEL_CONFIG_DL(33, "DUN", 32, 0),
> + /* The EDL firmware is a flash-programmer exposing firehose protocol */
> + 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_MBIM", 128, 2),
> MHI_CHANNEL_CONFIG_HW_DL(101, "IP_HW0_MBIM", 128, 3),
> };
> --
> 2.7.4
>
