diff --git a/drivers/accel/qaic/Kconfig b/drivers/accel/qaic/Kconfig
index 5e405a19c157..116e42d152ca 100644
--- a/drivers/accel/qaic/Kconfig
+++ b/drivers/accel/qaic/Kconfig
@@ -9,6 +9,7 @@ config DRM_ACCEL_QAIC
 	depends on PCI && HAS_IOMEM
 	depends on MHI_BUS
 	select CRC32
+	select WANT_DEV_COREDUMP
 	help
 	  Enables driver for Qualcomm's Cloud AI accelerator PCIe cards that are
 	  designed to accelerate Deep Learning inference workloads.
diff --git a/drivers/accel/qaic/qaic.h b/drivers/accel/qaic/qaic.h
index b9ae1c256c7a..4a371ddc0a55 100644
--- a/drivers/accel/qaic/qaic.h
+++ b/drivers/accel/qaic/qaic.h
@@ -202,6 +202,8 @@ struct qaic_device {
 	struct mhi_device	*ssr_ch;
 	/* Work queue for tasks related to MHI SSR device */
 	struct workqueue_struct	*ssr_wq;
+	/* Buffer to collect SSR crashdump via SSR MHI channel */
+	void			*ssr_mhi_buf;
 	/* DBC which is under SSR. Sentinel U32_MAX would mean that no SSR in progress */
 	u32			ssr_dbc;
 };
diff --git a/drivers/accel/qaic/qaic_drv.c b/drivers/accel/qaic/qaic_drv.c
index 4d9f4f149b3d..68f5b5db8b44 100644
--- a/drivers/accel/qaic/qaic_drv.c
+++ b/drivers/accel/qaic/qaic_drv.c
@@ -449,7 +449,7 @@ static struct qaic_device *create_qdev(struct pci_dev *pdev,
 	if (ret)
 		return NULL;
 
-	ret = qaic_ssr_init(qdev);
+	ret = qaic_ssr_init(qdev, drm);
 	if (ret)
 		pci_info(pdev, "QAIC SSR crashdump collection not supported.\n");
 
diff --git a/drivers/accel/qaic/qaic_ssr.c b/drivers/accel/qaic/qaic_ssr.c
index e9c7fe0573dd..9b662d690371 100644
--- a/drivers/accel/qaic/qaic_ssr.c
+++ b/drivers/accel/qaic/qaic_ssr.c
@@ -6,6 +6,7 @@
 #include <asm/byteorder.h>
 #include <drm/drm_file.h>
 #include <drm/drm_managed.h>
+#include <linux/devcoredump.h>
 #include <linux/device.h>
 #include <linux/kernel.h>
 #include <linux/mhi.h>
@@ -15,6 +16,9 @@
 #include "qaic_ssr.h"
 
 #define SSR_RESP_MSG_SZ 32
+#define SSR_MHI_BUF_SIZE SZ_64K
+#define SSR_MEM_READ_DATA_SIZE ((u64)SSR_MHI_BUF_SIZE - sizeof(struct ssr_crashdump))
+#define SSR_MEM_READ_CHUNK_SIZE ((u64)SSR_MEM_READ_DATA_SIZE - sizeof(struct ssr_memory_read_rsp))
 
 #define DEBUG_TRANSFER_INFO		BIT(0)
 #define DEBUG_TRANSFER_INFO_RSP		BIT(1)
@@ -31,6 +35,19 @@
 #define BEFORE_POWER_UP		BIT(3)
 #define AFTER_POWER_UP		BIT(4)
 
+struct debug_info_table {
+	/* Save preferences. Default is mandatory */
+	u64 save_perf;
+	/* Base address of the debug region */
+	u64 mem_base;
+	/* Size of debug region in bytes */
+	u64 len;
+	/* Description */
+	char desc[20];
+	/* Filename of debug region */
+	char filename[20];
+};
+
 struct _ssr_hdr {
 	__le32 cmd;
 	__le32 len;
@@ -43,11 +60,41 @@ struct ssr_hdr {
 	u32 dbc_id;
 };
 
+struct ssr_debug_transfer_info {
+	struct ssr_hdr hdr;
+	u32 resv;
+	u64 tbl_addr;
+	u64 tbl_len;
+} __packed;
+
 struct ssr_debug_transfer_info_rsp {
 	struct _ssr_hdr hdr;
 	__le32 ret;
 } __packed;
 
+struct ssr_memory_read {
+	struct _ssr_hdr hdr;
+	__le32 resv;
+	__le64 addr;
+	__le64 len;
+} __packed;
+
+struct ssr_memory_read_rsp {
+	struct _ssr_hdr hdr;
+	__le32 resv;
+	u8 data[];
+} __packed;
+
+struct ssr_debug_transfer_done {
+	struct _ssr_hdr hdr;
+	__le32 resv;
+} __packed;
+
+struct ssr_debug_transfer_done_rsp {
+	struct _ssr_hdr hdr;
+	__le32 ret;
+} __packed;
+
 struct ssr_event {
 	struct ssr_hdr hdr;
 	u32 event;
@@ -67,17 +114,453 @@ struct ssr_resp {
 	u8 data[] __aligned(8);
 };
 
+/* SSR crashdump book keeping structure */
+struct ssr_dump_info {
+	/* DBC associated with this SSR crashdump */
+	struct dma_bridge_chan *dbc;
+	/*
+	 * It will be used when we complete the crashdump download and switch
+	 * to waiting on SSR events
+	 */
+	struct ssr_resp *resp;
+	/* MEMORY READ request MHI buffer.*/
+	struct ssr_memory_read *read_buf_req;
+	/* TRUE: ->read_buf_req is queued for MHI transaction. FALSE: Otherwise */
+	bool read_buf_req_queued;
+	/* Address of table in host */
+	void *tbl_addr;
+	/* Total size of table */
+	u64 tbl_len;
+	/* Offset of table(->tbl_addr) where the new chunk will be dumped */
+	u64 tbl_off;
+	/* Address of table in device/target */
+	u64 tbl_addr_dev;
+	/* Ptr to the entire dump */
+	void *dump_addr;
+	/* Entire crashdump size */
+	u64 dump_sz;
+	/* Offset of crashdump(->dump_addr) where the new chunk will be dumped */
+	u64 dump_off;
+	/* Points to the table entry we are currently downloading */
+	struct debug_info_table *tbl_ent;
+	/* Offset in the current table entry(->tbl_ent) for next chuck */
+	u64 tbl_ent_off;
+};
+
+struct ssr_crashdump {
+	/*
+	 * Points to a book keeping struct maintained by MHI SSR device while
+	 * downloading a SSR crashdump. It is NULL when crashdump downloading
+	 * not in progress.
+	 */
+	struct ssr_dump_info *dump_info;
+	/* Work struct to schedule work coming on QAIC_SSR channel */
+	struct work_struct work;
+	/* Root struct of device, used to access device resources */
+	struct qaic_device *qdev;
+	/* Buffer used by MHI for transfer requests */
+	u8 data[];
+};
+
+#define QAIC_SSR_DUMP_V1_MAGIC 0x1234567890abcdef
+#define QAIC_SSR_DUMP_V1_VER   1
+struct dump_file_meta {
+	u64 magic;
+	u64 version;
+	u64 size;		/* Total size of the entire dump */
+	u64 tbl_len;		/* Length of the table in byte */
+};
+
+/*
+ * Layout of crashdump
+ *              +------------------------------------------+
+ *              |         Crashdump Meta structure         |
+ *              | type: struct dump_file_meta              |
+ *              +------------------------------------------+
+ *              |             Crashdump Table              |
+ *              | type: array of struct debug_info_table   |
+ *              |                                          |
+ *              |                                          |
+ *              |                                          |
+ *              +------------------------------------------+
+ *              |                Crashdump                 |
+ *              |                                          |
+ *              |                                          |
+ *              |                                          |
+ *              |                                          |
+ *              |                                          |
+ *              +------------------------------------------+
+ */
+
+static void free_ssr_dump_info(struct ssr_crashdump *ssr_crash)
+{
+	struct ssr_dump_info *dump_info = ssr_crash->dump_info;
+
+	ssr_crash->dump_info = NULL;
+	if (!dump_info)
+		return;
+	if (!dump_info->read_buf_req_queued)
+		kfree(dump_info->read_buf_req);
+	vfree(dump_info->tbl_addr);
+	vfree(dump_info->dump_addr);
+	kfree(dump_info);
+}
+
 void qaic_clean_up_ssr(struct qaic_device *qdev)
 {
+	struct ssr_crashdump *ssr_crash = qdev->ssr_mhi_buf;
+
+	if (!ssr_crash)
+		return;
+
 	qaic_dbc_exit_ssr(qdev);
+	free_ssr_dump_info(ssr_crash);
+}
+
+static int alloc_dump(struct ssr_dump_info *dump_info)
+{
+	struct debug_info_table *tbl_ent = dump_info->tbl_addr;
+	struct dump_file_meta *dump_meta;
+	u64 tbl_sz_lp = 0;
+	u64 dump_size = 0;
+
+	while (tbl_sz_lp < dump_info->tbl_len) {
+		le64_to_cpus(&tbl_ent->save_perf);
+		le64_to_cpus(&tbl_ent->mem_base);
+		le64_to_cpus(&tbl_ent->len);
+
+		if (tbl_ent->len == 0)
+			return -EINVAL;
+
+		dump_size += tbl_ent->len;
+		tbl_ent++;
+		tbl_sz_lp += sizeof(*tbl_ent);
+	}
+
+	dump_info->dump_sz = dump_size + dump_info->tbl_len + sizeof(*dump_meta);
+	dump_info->dump_addr = vzalloc(dump_info->dump_sz);
+	if (!dump_info->dump_addr)
+		return -ENOMEM;
+
+	/* Copy crashdump meta and table */
+	dump_meta = dump_info->dump_addr;
+	dump_meta->magic = QAIC_SSR_DUMP_V1_MAGIC;
+	dump_meta->version = QAIC_SSR_DUMP_V1_VER;
+	dump_meta->size = dump_info->dump_sz;
+	dump_meta->tbl_len = dump_info->tbl_len;
+	memcpy(dump_info->dump_addr + sizeof(*dump_meta), dump_info->tbl_addr, dump_info->tbl_len);
+	/* Offset by crashdump meta and table (copied above) */
+	dump_info->dump_off = dump_info->tbl_len + sizeof(*dump_meta);
+
+	return 0;
+}
+
+static int send_xfer_done(struct qaic_device *qdev, void *resp, u32 dbc_id)
+{
+	struct ssr_debug_transfer_done *xfer_done;
+	int ret;
+
+	xfer_done = kmalloc(sizeof(*xfer_done), GFP_KERNEL);
+	if (!xfer_done) {
+		ret = -ENOMEM;
+		goto out;
+	}
+
+	ret = mhi_queue_buf(qdev->ssr_ch, DMA_FROM_DEVICE, resp, SSR_RESP_MSG_SZ, MHI_EOT);
+	if (ret)
+		goto free_xfer_done;
+
+	xfer_done->hdr.cmd = cpu_to_le32(DEBUG_TRANSFER_DONE);
+	xfer_done->hdr.len = cpu_to_le32(sizeof(*xfer_done));
+	xfer_done->hdr.dbc_id = cpu_to_le32(dbc_id);
+
+	ret = mhi_queue_buf(qdev->ssr_ch, DMA_TO_DEVICE, xfer_done, sizeof(*xfer_done), MHI_EOT);
+	if (ret)
+		goto free_xfer_done;
+
+	return 0;
+
+free_xfer_done:
+	kfree(xfer_done);
+out:
+	return ret;
+}
+
+static int mem_read_req(struct qaic_device *qdev, u64 dest_addr, u64 dest_len)
+{
+	struct ssr_crashdump *ssr_crash = qdev->ssr_mhi_buf;
+	struct ssr_memory_read *read_buf_req;
+	struct ssr_dump_info *dump_info;
+	int ret;
+
+	dump_info = ssr_crash->dump_info;
+	ret = mhi_queue_buf(qdev->ssr_ch, DMA_FROM_DEVICE, ssr_crash->data, SSR_MEM_READ_DATA_SIZE,
+			    MHI_EOT);
+	if (ret)
+		goto out;
+
+	read_buf_req = dump_info->read_buf_req;
+	read_buf_req->hdr.cmd = cpu_to_le32(MEMORY_READ);
+	read_buf_req->hdr.len = cpu_to_le32(sizeof(*read_buf_req));
+	read_buf_req->hdr.dbc_id = cpu_to_le32(qdev->ssr_dbc);
+	read_buf_req->addr = cpu_to_le64(dest_addr);
+	read_buf_req->len = cpu_to_le64(dest_len);
+
+	ret = mhi_queue_buf(qdev->ssr_ch, DMA_TO_DEVICE, read_buf_req, sizeof(*read_buf_req),
+			    MHI_EOT);
+	if (!ret)
+		dump_info->read_buf_req_queued = true;
+
+out:
+	return ret;
+}
+
+static int ssr_copy_table(struct ssr_dump_info *dump_info, void *data, u64 len)
+{
+	if (len > dump_info->tbl_len - dump_info->tbl_off)
+		return -EINVAL;
+
+	memcpy(dump_info->tbl_addr + dump_info->tbl_off, data, len);
+	dump_info->tbl_off += len;
+
+	/* Entire table has been downloaded, alloc dump memory */
+	if (dump_info->tbl_off == dump_info->tbl_len) {
+		dump_info->tbl_ent = dump_info->tbl_addr;
+		return alloc_dump(dump_info);
+	}
+
+	return 0;
+}
+
+static int ssr_copy_dump(struct ssr_dump_info *dump_info, void *data, u64 len)
+{
+	struct debug_info_table *tbl_ent;
+
+	tbl_ent = dump_info->tbl_ent;
+
+	if (len > tbl_ent->len - dump_info->tbl_ent_off)
+		return -EINVAL;
+
+	memcpy(dump_info->dump_addr + dump_info->dump_off, data, len);
+	dump_info->dump_off += len;
+	dump_info->tbl_ent_off += len;
+
+	/*
+	 * Current segment (a entry in table) of the crashdump is complete,
+	 * move to next one
+	 */
+	if (tbl_ent->len == dump_info->tbl_ent_off) {
+		dump_info->tbl_ent++;
+		dump_info->tbl_ent_off = 0;
+	}
+
+	return 0;
+}
+
+static void ssr_dump_worker(struct work_struct *work)
+{
+	struct ssr_crashdump *ssr_crash = container_of(work, struct ssr_crashdump, work);
+	struct qaic_device *qdev = ssr_crash->qdev;
+	struct ssr_memory_read_rsp *mem_rd_resp;
+	struct debug_info_table *tbl_ent;
+	struct ssr_dump_info *dump_info;
+	u64 dest_addr, dest_len;
+	struct _ssr_hdr *_hdr;
+	struct ssr_hdr hdr;
+	u64 data_len;
+	int ret;
+
+	mem_rd_resp = (struct ssr_memory_read_rsp *)ssr_crash->data;
+	_hdr = &mem_rd_resp->hdr;
+	hdr.cmd = le32_to_cpu(_hdr->cmd);
+	hdr.len = le32_to_cpu(_hdr->len);
+	hdr.dbc_id = le32_to_cpu(_hdr->dbc_id);
+
+	if (hdr.dbc_id != qdev->ssr_dbc)
+		goto reset_device;
+
+	dump_info = ssr_crash->dump_info;
+	if (!dump_info)
+		goto reset_device;
+
+	if (hdr.cmd != MEMORY_READ_RSP)
+		goto free_dump_info;
+
+	if (hdr.len > SSR_MEM_READ_DATA_SIZE)
+		goto free_dump_info;
+
+	data_len = hdr.len - sizeof(*mem_rd_resp);
+
+	if (dump_info->tbl_off < dump_info->tbl_len) /* Chunk belongs to table */
+		ret = ssr_copy_table(dump_info, mem_rd_resp->data, data_len);
+	else /* Chunk belongs to crashdump */
+		ret = ssr_copy_dump(dump_info, mem_rd_resp->data, data_len);
+
+	if (ret)
+		goto free_dump_info;
+
+	if (dump_info->tbl_off < dump_info->tbl_len) {
+		/* Continue downloading table */
+		dest_addr = dump_info->tbl_addr_dev + dump_info->tbl_off;
+		dest_len = min(SSR_MEM_READ_CHUNK_SIZE, dump_info->tbl_len - dump_info->tbl_off);
+		ret = mem_read_req(qdev, dest_addr, dest_len);
+	} else if (dump_info->dump_off < dump_info->dump_sz) {
+		/* Continue downloading crashdump */
+		tbl_ent = dump_info->tbl_ent;
+		dest_addr = tbl_ent->mem_base + dump_info->tbl_ent_off;
+		dest_len = min(SSR_MEM_READ_CHUNK_SIZE, tbl_ent->len - dump_info->tbl_ent_off);
+		ret = mem_read_req(qdev, dest_addr, dest_len);
+	} else {
+		/* Crashdump download complete */
+		ret = send_xfer_done(qdev, dump_info->resp->data, hdr.dbc_id);
+	}
+
+	/* Most likely a MHI xfer has failed */
+	if (ret)
+		goto free_dump_info;
+
+	return;
+
+free_dump_info:
+	/* Free the allocated memory */
+	free_ssr_dump_info(ssr_crash);
+reset_device:
+	/*
+	 * After subsystem crashes in device crashdump collection begins but
+	 * something went wrong while collecting crashdump, now instead of
+	 * handling this error we just reset the device as the best effort has
+	 * been made
+	 */
+	mhi_soc_reset(qdev->mhi_cntrl);
+}
+
+static struct ssr_dump_info *alloc_dump_info(struct qaic_device *qdev,
+					     struct ssr_debug_transfer_info *debug_info)
+{
+	struct ssr_dump_info *dump_info;
+	int ret;
+
+	le64_to_cpus(&debug_info->tbl_len);
+	le64_to_cpus(&debug_info->tbl_addr);
+
+	if (debug_info->tbl_len == 0 ||
+	    debug_info->tbl_len % sizeof(struct debug_info_table) != 0) {
+		ret = -EINVAL;
+		goto out;
+	}
+
+	/* Allocate SSR crashdump book keeping structure */
+	dump_info = kzalloc(sizeof(*dump_info), GFP_KERNEL);
+	if (!dump_info) {
+		ret = -ENOMEM;
+		goto out;
+	}
+
+	/* Buffer used to send MEMORY READ request to device via MHI */
+	dump_info->read_buf_req = kzalloc(sizeof(*dump_info->read_buf_req), GFP_KERNEL);
+	if (!dump_info->read_buf_req) {
+		ret = -ENOMEM;
+		goto free_dump_info;
+	}
+
+	/* Crashdump meta table buffer */
+	dump_info->tbl_addr = vzalloc(debug_info->tbl_len);
+	if (!dump_info->tbl_addr) {
+		ret = -ENOMEM;
+		goto free_read_buf_req;
+	}
+
+	dump_info->tbl_addr_dev = debug_info->tbl_addr;
+	dump_info->tbl_len = debug_info->tbl_len;
+
+	return dump_info;
+
+free_read_buf_req:
+	kfree(dump_info->read_buf_req);
+free_dump_info:
+	kfree(dump_info);
+out:
+	return ERR_PTR(ret);
+}
+
+static int dbg_xfer_info_rsp(struct qaic_device *qdev, struct dma_bridge_chan *dbc,
+			     struct ssr_debug_transfer_info *debug_info)
+{
+	struct ssr_debug_transfer_info_rsp *debug_rsp;
+	struct ssr_crashdump *ssr_crash = NULL;
+	int ret = 0, ret2;
+
+	debug_rsp = kmalloc(sizeof(*debug_rsp), GFP_KERNEL);
+	if (!debug_rsp)
+		return -ENOMEM;
+
+	if (!qdev->ssr_mhi_buf) {
+		ret = -ENOMEM;
+		goto send_rsp;
+	}
+
+	if (dbc->state != DBC_STATE_BEFORE_POWER_UP) {
+		ret = -EINVAL;
+		goto send_rsp;
+	}
+
+	ssr_crash = qdev->ssr_mhi_buf;
+	ssr_crash->dump_info = alloc_dump_info(qdev, debug_info);
+	if (IS_ERR(ssr_crash->dump_info)) {
+		ret = PTR_ERR(ssr_crash->dump_info);
+		ssr_crash->dump_info = NULL;
+	}
+
+send_rsp:
+	debug_rsp->hdr.cmd = cpu_to_le32(DEBUG_TRANSFER_INFO_RSP);
+	debug_rsp->hdr.len = cpu_to_le32(sizeof(*debug_rsp));
+	debug_rsp->hdr.dbc_id = cpu_to_le32(dbc->id);
+	/*
+	 * 0 = Return an ACK confirming the host is ready to download crashdump
+	 * 1 = Return an NACK confirming the host is not ready to download crashdump
+	 */
+	debug_rsp->ret = cpu_to_le32(ret ? 1 : 0);
+
+	ret2 = mhi_queue_buf(qdev->ssr_ch, DMA_TO_DEVICE, debug_rsp, sizeof(*debug_rsp), MHI_EOT);
+	if (ret2) {
+		free_ssr_dump_info(ssr_crash);
+		kfree(debug_rsp);
+		return ret2;
+	}
+
+	return ret;
+}
+
+static void dbg_xfer_done_rsp(struct qaic_device *qdev, struct dma_bridge_chan *dbc,
+			      struct ssr_debug_transfer_done_rsp *xfer_rsp)
+{
+	struct ssr_crashdump *ssr_crash = qdev->ssr_mhi_buf;
+	u32 status = le32_to_cpu(xfer_rsp->ret);
+	struct device *dev = &qdev->pdev->dev;
+	struct ssr_dump_info *dump_info;
+
+	dump_info = ssr_crash->dump_info;
+	if (!dump_info)
+		return;
+
+	if (status) {
+		free_ssr_dump_info(ssr_crash);
+		return;
+	}
+
+	dev_coredumpv(dev, dump_info->dump_addr, dump_info->dump_sz, GFP_KERNEL);
+	/* dev_coredumpv will free dump_info->dump_addr */
+	dump_info->dump_addr = NULL;
+	free_ssr_dump_info(ssr_crash);
 }
 
 static void ssr_worker(struct work_struct *work)
 {
 	struct ssr_resp *resp = container_of(work, struct ssr_resp, work);
 	struct ssr_hdr *hdr = (struct ssr_hdr *)resp->data;
-	struct ssr_debug_transfer_info_rsp *debug_rsp;
+	struct ssr_dump_info *dump_info = NULL;
 	struct qaic_device *qdev = resp->qdev;
+	struct ssr_crashdump *ssr_crash;
 	struct ssr_event_rsp *event_rsp;
 	struct dma_bridge_chan *dbc;
 	struct ssr_event *event;
@@ -98,27 +581,34 @@ static void ssr_worker(struct work_struct *work)
 
 	switch (hdr->cmd) {
 	case DEBUG_TRANSFER_INFO:
-		/* Decline crash dump request from the device */
-		debug_rsp = kmalloc(sizeof(*debug_rsp), GFP_KERNEL);
-		if (!debug_rsp)
+		ret = dbg_xfer_info_rsp(qdev, dbc, (struct ssr_debug_transfer_info *)resp->data);
+		if (ret)
 			break;
 
-		debug_rsp->hdr.cmd = cpu_to_le32(DEBUG_TRANSFER_INFO_RSP);
-		debug_rsp->hdr.len = cpu_to_le32(sizeof(*debug_rsp));
-		debug_rsp->hdr.dbc_id = cpu_to_le32(event->hdr.dbc_id);
-		debug_rsp->ret = cpu_to_le32(1);
+		ssr_crash = qdev->ssr_mhi_buf;
+		dump_info = ssr_crash->dump_info;
+		dump_info->dbc = dbc;
+		dump_info->resp = resp;
 
-		ret = mhi_queue_buf(qdev->ssr_ch, DMA_TO_DEVICE,
-				    debug_rsp, sizeof(*debug_rsp), MHI_EOT);
+		/* Start by downloading debug table */
+		ret = mem_read_req(qdev, dump_info->tbl_addr_dev,
+				   min(dump_info->tbl_len, SSR_MEM_READ_CHUNK_SIZE));
 		if (ret) {
-			pci_warn(qdev->pdev, "Could not send DEBUG_TRANSFER_INFO_RSP %d\n", ret);
-			kfree(debug_rsp);
+			free_ssr_dump_info(ssr_crash);
+			break;
 		}
+
+		/*
+		 * Till now everything went fine, which means that we will be
+		 * collecting crashdump chunk by chunk. Do not queue a response
+		 * buffer for SSR cmds till the crashdump is complete.
+		 */
 		return;
 	case SSR_EVENT:
 		event = (struct ssr_event *)hdr;
 		le32_to_cpus(&event->event);
 		ssr_event_ack = event->event;
+		ssr_crash = qdev->ssr_mhi_buf;
 
 		switch (event->event) {
 		case BEFORE_SHUTDOWN:
@@ -132,6 +622,18 @@ static void ssr_worker(struct work_struct *work)
 			set_dbc_state(qdev, hdr->dbc_id, DBC_STATE_BEFORE_POWER_UP);
 			break;
 		case AFTER_POWER_UP:
+			/*
+			 * If dump info is a non NULL value it means that we
+			 * have received this SSR event while downloading a
+			 * crashdump for this DBC is still in progress. NACK
+			 * the SSR event
+			 */
+			if (ssr_crash && ssr_crash->dump_info) {
+				free_ssr_dump_info(ssr_crash);
+				ssr_event_ack = SSR_EVENT_NACK;
+				break;
+			}
+
 			set_dbc_state(qdev, hdr->dbc_id, DBC_STATE_AFTER_POWER_UP);
 			break;
 		default:
@@ -152,11 +654,14 @@ static void ssr_worker(struct work_struct *work)
 		if (ret)
 			kfree(event_rsp);
 
-		if (event->event == AFTER_POWER_UP) {
+		if (event->event == AFTER_POWER_UP && ssr_event_ack != SSR_EVENT_NACK) {
 			qaic_dbc_exit_ssr(qdev);
 			set_dbc_state(qdev, hdr->dbc_id, DBC_STATE_IDLE);
 		}
 
+		break;
+	case DEBUG_TRANSFER_DONE_RSP:
+		dbg_xfer_done_rsp(qdev, dbc, (struct ssr_debug_transfer_done_rsp *)hdr);
 		break;
 	default:
 		break;
@@ -211,6 +716,31 @@ static void qaic_ssr_mhi_remove(struct mhi_device *mhi_dev)
 
 static void qaic_ssr_mhi_ul_xfer_cb(struct mhi_device *mhi_dev, struct mhi_result *mhi_result)
 {
+	struct qaic_device *qdev = dev_get_drvdata(&mhi_dev->dev);
+	struct ssr_crashdump *ssr_crash = qdev->ssr_mhi_buf;
+	struct _ssr_hdr *hdr = mhi_result->buf_addr;
+	struct ssr_dump_info *dump_info;
+
+	if (mhi_result->transaction_status) {
+		kfree(mhi_result->buf_addr);
+		return;
+	}
+
+	/*
+	 * MEMORY READ is used to download crashdump. And crashdump is
+	 * downloaded chunk by chunk in a series of MEMORY READ SSR commands.
+	 * Hence to avoid too many kmalloc() and kfree() of the same MEMORY READ
+	 * request buffer, we allocate only one such buffer and free it only
+	 * once.
+	 */
+	if (le32_to_cpu(hdr->cmd) == MEMORY_READ) {
+		dump_info = ssr_crash->dump_info;
+		if (dump_info) {
+			dump_info->read_buf_req_queued = false;
+			return;
+		}
+	}
+
 	kfree(mhi_result->buf_addr);
 }
 
@@ -218,12 +748,23 @@ static void qaic_ssr_mhi_dl_xfer_cb(struct mhi_device *mhi_dev, struct mhi_resul
 {
 	struct ssr_resp *resp = container_of(mhi_result->buf_addr, struct ssr_resp, data);
 	struct qaic_device *qdev = dev_get_drvdata(&mhi_dev->dev);
+	struct ssr_crashdump *ssr_crash = qdev->ssr_mhi_buf;
+	bool memory_read_rsp = false;
+
+	if (ssr_crash && ssr_crash->data == mhi_result->buf_addr)
+		memory_read_rsp = true;
 
 	if (mhi_result->transaction_status) {
-		kfree(resp);
+		/* Do not free SSR crashdump buffer as it allocated via managed APIs */
+		if (!memory_read_rsp)
+			kfree(resp);
 		return;
 	}
-	queue_work(qdev->ssr_wq, &resp->work);
+
+	if (memory_read_rsp)
+		queue_work(qdev->ssr_wq, &ssr_crash->work);
+	else
+		queue_work(qdev->ssr_wq, &resp->work);
 }
 
 static const struct mhi_device_id qaic_ssr_mhi_match_table[] = {
@@ -242,9 +783,24 @@ static struct mhi_driver qaic_ssr_mhi_driver = {
 	},
 };
 
-int qaic_ssr_init(struct qaic_device *qdev)
+int qaic_ssr_init(struct qaic_device *qdev, struct drm_device *drm)
 {
+	struct ssr_crashdump *ssr_crash;
+
 	qdev->ssr_dbc = QAIC_SSR_DBC_SENTINEL;
+
+	/*
+	 * Device requests only one SSR at a time. So allocating only one
+	 * buffer to download crashdump is good enough.
+	 */
+	ssr_crash = drmm_kzalloc(drm, SSR_MHI_BUF_SIZE, GFP_KERNEL);
+	if (!ssr_crash)
+		return -ENOMEM;
+
+	ssr_crash->qdev = qdev;
+	INIT_WORK(&ssr_crash->work, ssr_dump_worker);
+	qdev->ssr_mhi_buf = ssr_crash;
+
 	return 0;
 }
 
diff --git a/drivers/accel/qaic/qaic_ssr.h b/drivers/accel/qaic/qaic_ssr.h
index 02cd9ee1a483..97ccff305750 100644
--- a/drivers/accel/qaic/qaic_ssr.h
+++ b/drivers/accel/qaic/qaic_ssr.h
@@ -7,10 +7,11 @@
 #ifndef __QAIC_SSR_H__
 #define __QAIC_SSR_H__
 
+struct drm_device;
 struct qaic_device;
 
 int qaic_ssr_register(void);
 void qaic_ssr_unregister(void);
 void qaic_clean_up_ssr(struct qaic_device *qdev);
-int qaic_ssr_init(struct qaic_device *qdev);
+int qaic_ssr_init(struct qaic_device *qdev, struct drm_device *drm);
 #endif /* __QAIC_SSR_H__ */