Commit 15f67057 authored by Manivannan Sadhasivam's avatar Manivannan Sadhasivam
Browse files

bus: mhi: host: pci_generic: Add support for IP_SW0 channels 



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.

Reviewed-by: default avatarLoic Poulain <loic.poulain@linaro.org>
Link: https://lore.kernel.org/r/20230519135803.13850-1-manivannan.sadhasivam@linaro.org


Signed-off-by: default avatarManivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
parent cabce92d

drivers/bus/mhi/host/pci_generic.c

+22 −4
Original line number Diff line number Diff line
@@ -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 = {