linux-kernel - [PATCH v2] bus: mhi: host: pci_generic: Add support for QDU100 device

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Message-Id: <20241007081543.3475027-1-quic_vpernami@quicinc.com>
Date: Mon,  7 Oct 2024 13:45:41 +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 v2] 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.

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

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>

---
changes from V1:
- Changing naming convention from modem_qcom_qdu100*
  to mhi_qcom_qdu100*
- Added more commit test for IP_SW1/2 channels.
- 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