Contributors: 3
Author Tokens Token Proportion Commits Commit Proportion
Jeff Hugo 2920 96.62% 2 40.00%
Jeffrey Hugo 99 3.28% 2 40.00%
Pranjal Ramajor Asha Kanojiya 3 0.10% 1 20.00%
Total 3022 5 


// SPDX-License-Identifier: GPL-2.0-only

/* Copyright (c) 2020-2021, The Linux Foundation. All rights reserved. */
/* Copyright (c) 2022-2024 Qualcomm Innovation Center, Inc. All rights reserved. */
/* Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries. */

#include <asm/byteorder.h>
#include <linux/device.h>
#include <linux/kernel.h>
#include <linux/mhi.h>

#include "qaic.h"
#include "qaic_ras.h"

#define MAGIC		0x55AA
#define VERSION		0x2
#define HDR_SZ		12
#define NUM_TEMP_LVL	3
#define POWER_BREAK	BIT(0)

enum msg_type {
	MSG_PUSH, /* async push from device */
	MSG_REQ,  /* sync request to device */
	MSG_RESP, /* sync response from device */
};

enum err_type {
	CE,	/* correctable error */
	UE,	/* uncorrectable error */
	UE_NF,	/* uncorrectable error that is non-fatal, expect a disruption */
	ERR_TYPE_MAX,
};

static const char * const err_type_str[] = {
	[CE]    = "Correctable",
	[UE]    = "Uncorrectable",
	[UE_NF] = "Uncorrectable Non-Fatal",
};

static const char * const err_class_str[] = {
	[CE]    = "Warning",
	[UE]    = "Fatal",
	[UE_NF] = "Warning",
};

enum err_source {
	SOC_MEM,
	PCIE,
	DDR,
	SYS_BUS1,
	SYS_BUS2,
	NSP_MEM,
	TSENS,
};

static const char * const err_src_str[TSENS + 1] = {
	[SOC_MEM]	= "SoC Memory",
	[PCIE]		= "PCIE",
	[DDR]		= "DDR",
	[SYS_BUS1]	= "System Bus source 1",
	[SYS_BUS2]	= "System Bus source 2",
	[NSP_MEM]	= "NSP Memory",
	[TSENS]		= "Temperature Sensors",
};

struct ras_data {
	/* header start */
	/* Magic number to validate the message */
	u16 magic;
	/* RAS version number */
	u16 ver;
	u32 seq_num;
	/* RAS message type */
	u8  type;
	u8  id;
	/* Size of RAS message without the header in byte */
	u16 len;
	/* header end */
	s32 result;
	/*
	 * Error source
	 * 0 : SoC Memory
	 * 1 : PCIE
	 * 2 : DDR
	 * 3 : System Bus source 1
	 * 4 : System Bus source 2
	 * 5 : NSP Memory
	 * 6 : Temperature Sensors
	 */
	u32 source;
	/*
	 * Stores the error type, there are three types of error in RAS
	 * 0 : correctable error (CE)
	 * 1 : uncorrectable error (UE)
	 * 2 : uncorrectable error that is non-fatal (UE_NF)
	 */
	u32 err_type;
	u32 err_threshold;
	u32 ce_count;
	u32 ue_count;
	u32 intr_num;
	/* Data specific to error source */
	u8  syndrome[64];
} __packed;

struct soc_mem_syndrome {
	u64 error_address[8];
} __packed;

struct nsp_mem_syndrome {
	u32 error_address[8];
	u8 nsp_id;
} __packed;

struct ddr_syndrome {
	u32 count;
	u32 irq_status;
	u32 data_31_0[2];
	u32 data_63_32[2];
	u32 data_95_64[2];
	u32 data_127_96[2];
	u32 addr_lsb;
	u16 addr_msb;
	u16 parity_bits;
	u16 instance;
	u16 err_type;
} __packed;

struct tsens_syndrome {
	u32 threshold_type;
	s32 temp;
} __packed;

struct sysbus1_syndrome {
	u32 slave;
	u32 err_type;
	u16 addr[8];
	u8  instance;
} __packed;

struct sysbus2_syndrome {
	u32 lsb3;
	u32 msb3;
	u32 lsb2;
	u32 msb2;
	u32 ext_id;
	u16 path;
	u16 op_type;
	u16 len;
	u16 redirect;
	u8  valid;
	u8  word_error;
	u8  non_secure;
	u8  opc;
	u8  error_code;
	u8  trans_type;
	u8  addr_space;
	u8  instance;
} __packed;

struct pcie_syndrome {
	/* CE info */
	u32 bad_tlp;
	u32 bad_dllp;
	u32 replay_rollover;
	u32 replay_timeout;
	u32 rx_err;
	u32 internal_ce_count;
	/* UE_NF info */
	u32 fc_timeout;
	u32 poison_tlp;
	u32 ecrc_err;
	u32 unsupported_req;
	u32 completer_abort;
	u32 completion_timeout;
	/* UE info */
	u32 addr;
	u8  index;
	/*
	 * Flag to indicate specific event of PCIe
	 * BIT(0): Power break (low power)
	 * BIT(1) to BIT(7): Reserved
	 */
	u8 flag;
} __packed;

static const char * const threshold_type_str[NUM_TEMP_LVL] = {
	[0] = "lower",
	[1] = "upper",
	[2] = "critical",
};

static void ras_msg_to_cpu(struct ras_data *msg)
{
	struct sysbus1_syndrome *sysbus1_syndrome = (struct sysbus1_syndrome *)&msg->syndrome[0];
	struct sysbus2_syndrome *sysbus2_syndrome = (struct sysbus2_syndrome *)&msg->syndrome[0];
	struct soc_mem_syndrome *soc_syndrome = (struct soc_mem_syndrome *)&msg->syndrome[0];
	struct nsp_mem_syndrome *nsp_syndrome = (struct nsp_mem_syndrome *)&msg->syndrome[0];
	struct tsens_syndrome *tsens_syndrome = (struct tsens_syndrome *)&msg->syndrome[0];
	struct pcie_syndrome *pcie_syndrome = (struct pcie_syndrome *)&msg->syndrome[0];
	struct ddr_syndrome *ddr_syndrome = (struct ddr_syndrome *)&msg->syndrome[0];
	int i;

	le16_to_cpus(&msg->magic);
	le16_to_cpus(&msg->ver);
	le32_to_cpus(&msg->seq_num);
	le16_to_cpus(&msg->len);
	le32_to_cpus(&msg->result);
	le32_to_cpus(&msg->source);
	le32_to_cpus(&msg->err_type);
	le32_to_cpus(&msg->err_threshold);
	le32_to_cpus(&msg->ce_count);
	le32_to_cpus(&msg->ue_count);
	le32_to_cpus(&msg->intr_num);

	switch (msg->source) {
	case SOC_MEM:
		for (i = 0; i < 8; i++)
			le64_to_cpus(&soc_syndrome->error_address[i]);
		break;
	case PCIE:
		le32_to_cpus(&pcie_syndrome->bad_tlp);
		le32_to_cpus(&pcie_syndrome->bad_dllp);
		le32_to_cpus(&pcie_syndrome->replay_rollover);
		le32_to_cpus(&pcie_syndrome->replay_timeout);
		le32_to_cpus(&pcie_syndrome->rx_err);
		le32_to_cpus(&pcie_syndrome->internal_ce_count);
		le32_to_cpus(&pcie_syndrome->fc_timeout);
		le32_to_cpus(&pcie_syndrome->poison_tlp);
		le32_to_cpus(&pcie_syndrome->ecrc_err);
		le32_to_cpus(&pcie_syndrome->unsupported_req);
		le32_to_cpus(&pcie_syndrome->completer_abort);
		le32_to_cpus(&pcie_syndrome->completion_timeout);
		le32_to_cpus(&pcie_syndrome->addr);
		break;
	case DDR:
		le16_to_cpus(&ddr_syndrome->instance);
		le16_to_cpus(&ddr_syndrome->err_type);
		le32_to_cpus(&ddr_syndrome->count);
		le32_to_cpus(&ddr_syndrome->irq_status);
		le32_to_cpus(&ddr_syndrome->data_31_0[0]);
		le32_to_cpus(&ddr_syndrome->data_31_0[1]);
		le32_to_cpus(&ddr_syndrome->data_63_32[0]);
		le32_to_cpus(&ddr_syndrome->data_63_32[1]);
		le32_to_cpus(&ddr_syndrome->data_95_64[0]);
		le32_to_cpus(&ddr_syndrome->data_95_64[1]);
		le32_to_cpus(&ddr_syndrome->data_127_96[0]);
		le32_to_cpus(&ddr_syndrome->data_127_96[1]);
		le16_to_cpus(&ddr_syndrome->parity_bits);
		le16_to_cpus(&ddr_syndrome->addr_msb);
		le32_to_cpus(&ddr_syndrome->addr_lsb);
		break;
	case SYS_BUS1:
		le32_to_cpus(&sysbus1_syndrome->slave);
		le32_to_cpus(&sysbus1_syndrome->err_type);
		for (i = 0; i < 8; i++)
			le16_to_cpus(&sysbus1_syndrome->addr[i]);
		break;
	case SYS_BUS2:
		le16_to_cpus(&sysbus2_syndrome->op_type);
		le16_to_cpus(&sysbus2_syndrome->len);
		le16_to_cpus(&sysbus2_syndrome->redirect);
		le16_to_cpus(&sysbus2_syndrome->path);
		le32_to_cpus(&sysbus2_syndrome->ext_id);
		le32_to_cpus(&sysbus2_syndrome->lsb2);
		le32_to_cpus(&sysbus2_syndrome->msb2);
		le32_to_cpus(&sysbus2_syndrome->lsb3);
		le32_to_cpus(&sysbus2_syndrome->msb3);
		break;
	case NSP_MEM:
		for (i = 0; i < 8; i++)
			le32_to_cpus(&nsp_syndrome->error_address[i]);
		break;
	case TSENS:
		le32_to_cpus(&tsens_syndrome->threshold_type);
		le32_to_cpus(&tsens_syndrome->temp);
		break;
	}
}

static void decode_ras_msg(struct qaic_device *qdev, struct ras_data *msg)
{
	struct sysbus1_syndrome *sysbus1_syndrome = (struct sysbus1_syndrome *)&msg->syndrome[0];
	struct sysbus2_syndrome *sysbus2_syndrome = (struct sysbus2_syndrome *)&msg->syndrome[0];
	struct soc_mem_syndrome *soc_syndrome = (struct soc_mem_syndrome *)&msg->syndrome[0];
	struct nsp_mem_syndrome *nsp_syndrome = (struct nsp_mem_syndrome *)&msg->syndrome[0];
	struct tsens_syndrome *tsens_syndrome = (struct tsens_syndrome *)&msg->syndrome[0];
	struct pcie_syndrome *pcie_syndrome = (struct pcie_syndrome *)&msg->syndrome[0];
	struct ddr_syndrome *ddr_syndrome = (struct ddr_syndrome *)&msg->syndrome[0];
	char *class;
	char *level;

	if (msg->magic != MAGIC) {
		pci_warn(qdev->pdev, "Dropping RAS message with invalid magic %x\n", msg->magic);
		return;
	}

	if (!msg->ver || msg->ver > VERSION) {
		pci_warn(qdev->pdev, "Dropping RAS message with invalid version %d\n", msg->ver);
		return;
	}

	if (msg->type != MSG_PUSH) {
		pci_warn(qdev->pdev, "Dropping non-PUSH RAS message\n");
		return;
	}

	if (msg->len != sizeof(*msg) - HDR_SZ) {
		pci_warn(qdev->pdev, "Dropping RAS message with invalid len %d\n", msg->len);
		return;
	}

	if (msg->err_type >= ERR_TYPE_MAX) {
		pci_warn(qdev->pdev, "Dropping RAS message with err type %d\n", msg->err_type);
		return;
	}

	if (msg->err_type == UE)
		level = KERN_ERR;
	else
		level = KERN_WARNING;

	switch (msg->source) {
	case SOC_MEM:
		dev_printk(level, &qdev->pdev->dev, "RAS event.\nClass:%s\nDescription:%s %s %s\nError Threshold for this report %d\nSyndrome:\n    0x%llx\n    0x%llx\n    0x%llx\n    0x%llx\n    0x%llx\n    0x%llx\n    0x%llx\n    0x%llx\n",
			   err_class_str[msg->err_type],
			   err_type_str[msg->err_type],
			   "error from",
			   err_src_str[msg->source],
			   msg->err_threshold,
			   soc_syndrome->error_address[0],
			   soc_syndrome->error_address[1],
			   soc_syndrome->error_address[2],
			   soc_syndrome->error_address[3],
			   soc_syndrome->error_address[4],
			   soc_syndrome->error_address[5],
			   soc_syndrome->error_address[6],
			   soc_syndrome->error_address[7]);
		break;
	case PCIE:
		dev_printk(level, &qdev->pdev->dev, "RAS event.\nClass:%s\nDescription:%s %s %s\nError Threshold for this report %d\n",
			   err_class_str[msg->err_type],
			   err_type_str[msg->err_type],
			   "error from",
			   err_src_str[msg->source],
			   msg->err_threshold);

		switch (msg->err_type) {
		case CE:
			/*
			 * Modeled after AER prints. This continues the dev_printk() from a few
			 * lines up. We reduce duplication of code, but also avoid re-printing the
			 * PCI device info so that the end result looks uniform to the log user.
			 */
			printk(KERN_WARNING pr_fmt("Syndrome:\n    Bad TLP count %d\n    Bad DLLP count %d\n    Replay Rollover count %d\n    Replay Timeout count %d\n    Recv Error count %d\n    Internal CE count %d\n"),
			       pcie_syndrome->bad_tlp,
			       pcie_syndrome->bad_dllp,
			       pcie_syndrome->replay_rollover,
			       pcie_syndrome->replay_timeout,
			       pcie_syndrome->rx_err,
			       pcie_syndrome->internal_ce_count);
			if (msg->ver > 0x1)
				pr_warn("    Power break %s\n",
					pcie_syndrome->flag & POWER_BREAK ? "ON" : "OFF");
			break;
		case UE:
			printk(KERN_ERR pr_fmt("Syndrome:\n    Index %d\n    Address 0x%x\n"),
			       pcie_syndrome->index, pcie_syndrome->addr);
			break;
		case UE_NF:
			printk(KERN_WARNING pr_fmt("Syndrome:\n    FC timeout count %d\n    Poisoned TLP count %d\n    ECRC error count %d\n    Unsupported request count %d\n    Completer abort count %d\n    Completion timeout count %d\n"),
			       pcie_syndrome->fc_timeout,
			       pcie_syndrome->poison_tlp,
			       pcie_syndrome->ecrc_err,
			       pcie_syndrome->unsupported_req,
			       pcie_syndrome->completer_abort,
			       pcie_syndrome->completion_timeout);
			break;
		default:
			break;
		}
		break;
	case DDR:
		dev_printk(level, &qdev->pdev->dev, "RAS event.\nClass:%s\nDescription:%s %s %s\nError Threshold for this report %d\nSyndrome:\n    Instance %d\n    Count %d\n    Data 31_0 0x%x 0x%x\n    Data 63_32 0x%x 0x%x\n    Data 95_64 0x%x 0x%x\n    Data 127_96 0x%x 0x%x\n    Parity bits 0x%x\n    Address msb 0x%x\n    Address lsb 0x%x\n",
			   err_class_str[msg->err_type],
			   err_type_str[msg->err_type],
			   "error from",
			   err_src_str[msg->source],
			   msg->err_threshold,
			   ddr_syndrome->instance,
			   ddr_syndrome->count,
			   ddr_syndrome->data_31_0[1],
			   ddr_syndrome->data_31_0[0],
			   ddr_syndrome->data_63_32[1],
			   ddr_syndrome->data_63_32[0],
			   ddr_syndrome->data_95_64[1],
			   ddr_syndrome->data_95_64[0],
			   ddr_syndrome->data_127_96[1],
			   ddr_syndrome->data_127_96[0],
			   ddr_syndrome->parity_bits,
			   ddr_syndrome->addr_msb,
			   ddr_syndrome->addr_lsb);
		break;
	case SYS_BUS1:
		dev_printk(level, &qdev->pdev->dev, "RAS event.\nClass:%s\nDescription:%s %s %s\nError Threshold for this report %d\nSyndrome:\n    instance %d\n    %s\n    err_type %d\n    address0 0x%x\n    address1 0x%x\n    address2 0x%x\n    address3 0x%x\n    address4 0x%x\n    address5 0x%x\n    address6 0x%x\n    address7 0x%x\n",
			   err_class_str[msg->err_type],
			   err_type_str[msg->err_type],
			   "error from",
			   err_src_str[msg->source],
			   msg->err_threshold,
			   sysbus1_syndrome->instance,
			   sysbus1_syndrome->slave ? "Slave" : "Master",
			   sysbus1_syndrome->err_type,
			   sysbus1_syndrome->addr[0],
			   sysbus1_syndrome->addr[1],
			   sysbus1_syndrome->addr[2],
			   sysbus1_syndrome->addr[3],
			   sysbus1_syndrome->addr[4],
			   sysbus1_syndrome->addr[5],
			   sysbus1_syndrome->addr[6],
			   sysbus1_syndrome->addr[7]);
		break;
	case SYS_BUS2:
		dev_printk(level, &qdev->pdev->dev, "RAS event.\nClass:%s\nDescription:%s %s %s\nError Threshold for this report %d\nSyndrome:\n    instance %d\n    valid %d\n    word error %d\n    non-secure %d\n    opc %d\n    error code %d\n    transaction type %d\n    address space %d\n    operation type %d\n    len %d\n    redirect %d\n    path %d\n    ext_id %d\n    lsb2 %d\n    msb2 %d\n    lsb3 %d\n    msb3 %d\n",
			   err_class_str[msg->err_type],
			   err_type_str[msg->err_type],
			   "error from",
			   err_src_str[msg->source],
			   msg->err_threshold,
			   sysbus2_syndrome->instance,
			   sysbus2_syndrome->valid,
			   sysbus2_syndrome->word_error,
			   sysbus2_syndrome->non_secure,
			   sysbus2_syndrome->opc,
			   sysbus2_syndrome->error_code,
			   sysbus2_syndrome->trans_type,
			   sysbus2_syndrome->addr_space,
			   sysbus2_syndrome->op_type,
			   sysbus2_syndrome->len,
			   sysbus2_syndrome->redirect,
			   sysbus2_syndrome->path,
			   sysbus2_syndrome->ext_id,
			   sysbus2_syndrome->lsb2,
			   sysbus2_syndrome->msb2,
			   sysbus2_syndrome->lsb3,
			   sysbus2_syndrome->msb3);
		break;
	case NSP_MEM:
		dev_printk(level, &qdev->pdev->dev, "RAS event.\nClass:%s\nDescription:%s %s %s\nError Threshold for this report %d\nSyndrome:\n    NSP ID %d\n    0x%x\n    0x%x\n    0x%x\n    0x%x\n    0x%x\n    0x%x\n    0x%x\n    0x%x\n",
			   err_class_str[msg->err_type],
			   err_type_str[msg->err_type],
			   "error from",
			   err_src_str[msg->source],
			   msg->err_threshold,
			   nsp_syndrome->nsp_id,
			   nsp_syndrome->error_address[0],
			   nsp_syndrome->error_address[1],
			   nsp_syndrome->error_address[2],
			   nsp_syndrome->error_address[3],
			   nsp_syndrome->error_address[4],
			   nsp_syndrome->error_address[5],
			   nsp_syndrome->error_address[6],
			   nsp_syndrome->error_address[7]);
		break;
	case TSENS:
		if (tsens_syndrome->threshold_type >= NUM_TEMP_LVL) {
			pci_warn(qdev->pdev, "Dropping RAS message with invalid temp threshold %d\n",
				 tsens_syndrome->threshold_type);
			break;
		}

		if (msg->err_type)
			class = "Fatal";
		else if (tsens_syndrome->threshold_type)
			class = "Critical";
		else
			class = "Warning";

		dev_printk(level, &qdev->pdev->dev, "RAS event.\nClass:%s\nDescription:%s %s %s\nError Threshold for this report %d\nSyndrome:\n    %s threshold\n    %d deg C\n",
			   class,
			   err_type_str[msg->err_type],
			   "error from",
			   err_src_str[msg->source],
			   msg->err_threshold,
			   threshold_type_str[tsens_syndrome->threshold_type],
			   tsens_syndrome->temp);
		break;
	}

	/* Uncorrectable errors are fatal */
	if (msg->err_type == UE)
		mhi_soc_reset(qdev->mhi_cntrl);

	switch (msg->err_type) {
	case CE:
		if (qdev->ce_count != UINT_MAX)
			qdev->ce_count++;
		break;
	case UE:
		if (qdev->ce_count != UINT_MAX)
			qdev->ue_count++;
		break;
	case UE_NF:
		if (qdev->ce_count != UINT_MAX)
			qdev->ue_nf_count++;
		break;
	default:
		/* not possible */
		break;
	}
}

static ssize_t ce_count_show(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct qaic_device *qdev = pci_get_drvdata(to_pci_dev(dev));

	return snprintf(buf, PAGE_SIZE, "%d\n", qdev->ce_count);
}

static ssize_t ue_count_show(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct qaic_device *qdev = pci_get_drvdata(to_pci_dev(dev));

	return snprintf(buf, PAGE_SIZE, "%d\n", qdev->ue_count);
}

static ssize_t ue_nonfatal_count_show(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct qaic_device *qdev = pci_get_drvdata(to_pci_dev(dev));

	return snprintf(buf, PAGE_SIZE, "%d\n", qdev->ue_nf_count);
}

static DEVICE_ATTR_RO(ce_count);
static DEVICE_ATTR_RO(ue_count);
static DEVICE_ATTR_RO(ue_nonfatal_count);

static struct attribute *ras_attrs[] = {
	&dev_attr_ce_count.attr,
	&dev_attr_ue_count.attr,
	&dev_attr_ue_nonfatal_count.attr,
	NULL,
};

static struct attribute_group ras_group = {
	.attrs = ras_attrs,
};

static int qaic_ras_mhi_probe(struct mhi_device *mhi_dev, const struct mhi_device_id *id)
{
	struct qaic_device *qdev = pci_get_drvdata(to_pci_dev(mhi_dev->mhi_cntrl->cntrl_dev));
	struct ras_data *resp;
	int ret;

	ret = mhi_prepare_for_transfer(mhi_dev);
	if (ret)
		return ret;

	resp = kzalloc(sizeof(*resp), GFP_KERNEL);
	if (!resp) {
		mhi_unprepare_from_transfer(mhi_dev);
		return -ENOMEM;
	}

	ret = mhi_queue_buf(mhi_dev, DMA_FROM_DEVICE, resp, sizeof(*resp), MHI_EOT);
	if (ret) {
		kfree(resp);
		mhi_unprepare_from_transfer(mhi_dev);
		return ret;
	}

	ret = device_add_group(&qdev->pdev->dev, &ras_group);
	if (ret) {
		mhi_unprepare_from_transfer(mhi_dev);
		pci_dbg(qdev->pdev, "ras add sysfs failed %d\n", ret);
		return ret;
	}

	dev_set_drvdata(&mhi_dev->dev, qdev);
	qdev->ras_ch = mhi_dev;

	return ret;
}

static void qaic_ras_mhi_remove(struct mhi_device *mhi_dev)
{
	struct qaic_device *qdev;

	qdev = dev_get_drvdata(&mhi_dev->dev);
	qdev->ras_ch = NULL;
	device_remove_group(&qdev->pdev->dev, &ras_group);
	mhi_unprepare_from_transfer(mhi_dev);
}

static void qaic_ras_mhi_ul_xfer_cb(struct mhi_device *mhi_dev, struct mhi_result *mhi_result) {}

static void qaic_ras_mhi_dl_xfer_cb(struct mhi_device *mhi_dev, struct mhi_result *mhi_result)
{
	struct qaic_device *qdev = dev_get_drvdata(&mhi_dev->dev);
	struct ras_data *msg = mhi_result->buf_addr;
	int ret;

	if (mhi_result->transaction_status) {
		kfree(msg);
		return;
	}

	ras_msg_to_cpu(msg);
	decode_ras_msg(qdev, msg);

	ret = mhi_queue_buf(qdev->ras_ch, DMA_FROM_DEVICE, msg, sizeof(*msg), MHI_EOT);
	if (ret) {
		dev_err(&mhi_dev->dev, "Cannot requeue RAS recv buf %d\n", ret);
		kfree(msg);
	}
}

static const struct mhi_device_id qaic_ras_mhi_match_table[] = {
	{ .chan = "QAIC_STATUS", },
	{},
};

static struct mhi_driver qaic_ras_mhi_driver = {
	.id_table = qaic_ras_mhi_match_table,
	.remove = qaic_ras_mhi_remove,
	.probe = qaic_ras_mhi_probe,
	.ul_xfer_cb = qaic_ras_mhi_ul_xfer_cb,
	.dl_xfer_cb = qaic_ras_mhi_dl_xfer_cb,
	.driver = {
		.name = "qaic_ras",
	},
};

int qaic_ras_register(void)
{
	return mhi_driver_register(&qaic_ras_mhi_driver);
}

void qaic_ras_unregister(void)
{
	mhi_driver_unregister(&qaic_ras_mhi_driver);
}