linux-kernel - [PATCH v3] bus: mhi: host: pci_generic: Add support for QDU100 device

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Message-Id: <20241007091622.3497928-1-quic_vpernami@quicinc.com>
Date: Mon,  7 Oct 2024 14:46:20 +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, quic_mrana@...cinc.com,
        Vivek Pernamitta <quic_vpernami@...cinc.com>,
        Slark Xiao <slark_xiao@....com>, Mank Wang <mank.wang@...prisma.us>,
        Jeff Johnson <quic_jjohnson@...cinc.com>,
        Fabio Porcedda <fabio.porcedda@...il.com>,
        linux-arm-msm@...r.kernel.org (open list:MHI BUS),
        linux-kernel@...r.kernel.org (open list)
Subject: [PATCH v3] bus: mhi: host: pci_generic: Add support for QDU100 device

Add MHI controller configuration for QDU100 device

The Qualcomm X100 5G RAN Accelerator Card is designed to
enhance Open vRAN servers by offloading CPUs from intensive
5G baseband functions.

Currently IP_SW1/2 channel support is not present in
mhi_net driver, will be supporting them in future.

Link: 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>

---
changs from V2:
- updated commit text.

changes from V1:
- Changing naming convention from modem_qcom_qdu100*
  to mhi_qcom_qdu100*.
- Updated commit text.
- Fixed and corrected by passing mhi_pci_dev_info struct
  instead of mhi_controller_config.
---
 drivers/bus/mhi/host/pci_generic.c | 60 ++++++++++++++++++++++++++++++
 1 file changed, 60 insertions(+)

diff --git a/drivers/bus/mhi/host/pci_generic.c b/drivers/bus/mhi/host/pci_generic.c
index 9938bb034c1c..b9b7dd8d9411 100644
--- a/drivers/bus/mhi/host/pci_generic.c
+++ b/drivers/bus/mhi/host/pci_generic.c
@@ -245,6 +245,63 @@ struct mhi_pci_dev_info {
 		.channel = ch_num,		\
 	}
 
+static const struct mhi_channel_config mhi_qcom_qdu100_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 mhi_qcom_qdu100_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 mhi_qcom_qdu100_config = {
+	.max_channels = 128,
+	.timeout_ms = 120000,
+	.num_channels = ARRAY_SIZE(mhi_qcom_qdu100_channels),
+	.ch_cfg = mhi_qcom_qdu100_channels,
+	.num_events = ARRAY_SIZE(mhi_qcom_qdu100_events),
+	.event_cfg = mhi_qcom_qdu100_events,
+};
+
+static const struct mhi_pci_dev_info mhi_qcom_qdu100_info = {
+	.name = "qcom-lassen",
+	.fw = "qcom/lassen/xbl_s.melf",
+	.edl = "qcom/lassen/edl.mbn",
+	.edl_trigger = true,
+	.config = &mhi_qcom_qdu100_config,
+	.bar_num = MHI_PCI_DEFAULT_BAR_NUM,
+	.dma_data_width = 32,
+	.sideband_wake = false,
+};
+
 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 +879,9 @@ 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)&mhi_qcom_qdu100_info },
 	{  }
 };
 MODULE_DEVICE_TABLE(pci, mhi_pci_id_table);
-- 
2.34.1