Commit 11134390 authored by Loic Poulain's avatar Loic Poulain Committed by Manivannan Sadhasivam
Browse files

bus: mhi: pci_generic: Add FIREHOSE channels 



When device enters flash programmer context (FP), it exposes firehose
protocol through the EDL dedicated channels.

Signed-off-by: default avatarLoic Poulain <loic.poulain@linaro.org>
Reviewed-by: default avatarManivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/1617784860-32439-1-git-send-email-loic.poulain@linaro.org


Signed-off-by: default avatarManivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
parent 757072ab

drivers/bus/mhi/pci_generic.c

+35 −0
Original line number Diff line number Diff line
@@ -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),

};