linux-kernel - [PATCH] bus: mhi: host: pci_generic: Add support for QDU100 device

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Message-Id: <20241001113738.152467-1-quic_vpernami@quicinc.com>
Date: Tue,  1 Oct 2024 17:07:35 +0530
From: Vivek Pernamitta <quic_vpernami@...cinc.com>
To: mhi@...ts.linux.dev
Cc: quic_qianyu@...cinc.com, manivannan.sadhasivam@...aro.org,
        quic_vbadigan@...cinc.com, quic_krichai@...cinc.com,
        quic_skananth@...cinc.com, mrana@...cinc.com,
        Vivek Pernamitta <quic_vpernami@...cinc.com>,
        Slark Xiao <slark_xiao@....com>,
        Fabio Porcedda <fabio.porcedda@...il.com>,
        Mank Wang <mank.wang@...prisma.us>,
        linux-arm-msm@...r.kernel.org (open list:MHI BUS),
        linux-kernel@...r.kernel.org (open list)
Subject: [PATCH] bus: mhi: host: pci_generic: Add support for QDU100 device

Add MHI controller configuration for QDU100 device.

This Qualcomm QDU100 device is inline accelerator card
which is an extension to QRU100 5G RAN platform.
which is designed to simplify 5G deployments by offering
a turnkey solution for ease of deployment with O-RAN
fronthaul and 5G NR layer 1 High (L1 High) processing,
and to accelerate operator and infrastructure vendor
adoption of virtualized RAN platforms.

https://docs.qualcomm.com/bundle/publicresource/87-79371-1_REV_A_Qualcomm_X100_5G_RAN_Accelerator_Card_Product_Brief.pdf
Signed-off-by: Vivek Pernamitta <quic_vpernami@...cinc.com>
---
 drivers/bus/mhi/host/pci_generic.c | 49 ++++++++++++++++++++++++++++++
 1 file changed, 49 insertions(+)

diff --git a/drivers/bus/mhi/host/pci_generic.c b/drivers/bus/mhi/host/pci_generic.c
index 9938bb034c1c..1153697fa858 100644
--- a/drivers/bus/mhi/host/pci_generic.c
+++ b/drivers/bus/mhi/host/pci_generic.c
@@ -245,6 +245,52 @@ struct mhi_pci_dev_info {
 		.channel = ch_num,		\
 	}
 
+static const struct mhi_channel_config modem_qcom_qdu100_mhi_channels[] = {
+	MHI_CHANNEL_CONFIG_UL(0, "LOOPBACK", 32, 2),
+	MHI_CHANNEL_CONFIG_DL(1, "LOOPBACK", 32, 2),
+	MHI_CHANNEL_CONFIG_UL_SBL(2, "SAHARA", 128, 1),
+	MHI_CHANNEL_CONFIG_DL_SBL(3, "SAHARA", 128, 1),
+	MHI_CHANNEL_CONFIG_UL(4, "DIAG", 64, 3),
+	MHI_CHANNEL_CONFIG_DL(5, "DIAG", 64, 3),
+	MHI_CHANNEL_CONFIG_UL(9, "QDSS", 64, 3),
+	MHI_CHANNEL_CONFIG_UL(14, "NMEA", 32, 4),
+	MHI_CHANNEL_CONFIG_DL(15, "NMEA", 32, 4),
+	MHI_CHANNEL_CONFIG_UL(16, "CSM_CTRL", 32, 4),
+	MHI_CHANNEL_CONFIG_DL(17, "CSM_CTRL", 32, 4),
+	MHI_CHANNEL_CONFIG_UL(40, "MHI_PHC", 32, 4),
+	MHI_CHANNEL_CONFIG_DL(41, "MHI_PHC", 32, 4),
+	MHI_CHANNEL_CONFIG_UL(46, "IP_SW0", 256, 5),
+	MHI_CHANNEL_CONFIG_DL(47, "IP_SW0", 256, 5),
+	MHI_CHANNEL_CONFIG_UL(48, "IP_SW1", 256, 6),
+	MHI_CHANNEL_CONFIG_DL(49, "IP_SW1", 256, 6),
+	MHI_CHANNEL_CONFIG_UL(50, "IP_SW2", 256, 7),
+	MHI_CHANNEL_CONFIG_DL(51, "IP_SW2", 256, 7),
+};
+
+static struct mhi_event_config modem_qcom_qdu100_mhi_events[] = {
+	/* first ring is control+data ring */
+	MHI_EVENT_CONFIG_CTRL(0, 64),
+	/* SAHARA dedicated event ring */
+	MHI_EVENT_CONFIG_SW_DATA(1, 256),
+	/* Software channels dedicated event ring */
+	MHI_EVENT_CONFIG_SW_DATA(2, 64),
+	MHI_EVENT_CONFIG_SW_DATA(3, 256),
+	MHI_EVENT_CONFIG_SW_DATA(4, 256),
+	/* Software IP channels dedicated event ring */
+	MHI_EVENT_CONFIG_SW_DATA(5, 512),
+	MHI_EVENT_CONFIG_SW_DATA(6, 512),
+	MHI_EVENT_CONFIG_SW_DATA(7, 512),
+};
+
+static const struct mhi_controller_config modem_qcom_qdu100_mhi_config = {
+	.max_channels = 128,
+	.timeout_ms = 120000,
+	.num_channels = ARRAY_SIZE(modem_qcom_qdu100_mhi_channels),
+	.ch_cfg = modem_qcom_qdu100_mhi_channels,
+	.num_events = ARRAY_SIZE(modem_qcom_qdu100_mhi_events),
+	.event_cfg = modem_qcom_qdu100_mhi_events,
+};
+
 static const struct mhi_channel_config modem_qcom_v1_mhi_channels[] = {
 	MHI_CHANNEL_CONFIG_UL(4, "DIAG", 16, 1),
 	MHI_CHANNEL_CONFIG_DL(5, "DIAG", 16, 1),
@@ -822,6 +868,9 @@ static const struct pci_device_id mhi_pci_id_table[] = {
 	/* NETPRISMA FCUN69 (SDX6X) */
 	{ PCI_DEVICE(PCI_VENDOR_ID_NETPRISMA, 0x1001),
 		.driver_data = (kernel_ulong_t) &mhi_netprisma_fcun69_info },
+	/* QDU100, x100-DU */
+	{ PCI_DEVICE(PCI_VENDOR_ID_QCOM, 0x0601),
+		.driver_data = (kernel_ulong_t)&modem_qcom_qdu100_mhi_config },
 	{  }
 };
 MODULE_DEVICE_TABLE(pci, mhi_pci_id_table);
-- 
2.34.1