diff --git a/drivers/dma/switchtec_dma.c b/drivers/dma/switchtec_dma.c
index 4c0dacc24608..3ef928640615 100644
--- a/drivers/dma/switchtec_dma.c
+++ b/drivers/dma/switchtec_dma.c
@@ -32,6 +32,8 @@ MODULE_AUTHOR("Kelvin Cao");
 #define SWITCHTEC_REG_SE_BUF_CNT	0x98
 #define SWITCHTEC_REG_SE_BUF_BASE	0x9a
 
+#define SWITCHTEC_DESC_MAX_SIZE		0x100000
+
 #define SWITCHTEC_CHAN_CTRL_PAUSE	BIT(0)
 #define SWITCHTEC_CHAN_CTRL_HALT	BIT(1)
 #define SWITCHTEC_CHAN_CTRL_RESET	BIT(2)
@@ -41,6 +43,8 @@ MODULE_AUTHOR("Kelvin Cao");
 #define SWITCHTEC_CHAN_STS_HALTED	BIT(10)
 #define SWITCHTEC_CHAN_STS_PAUSED_MASK	GENMASK(29, 13)
 
+#define SWITCHTEC_INVALID_HFID 0xffff
+
 #define SWITCHTEC_DMA_SQ_SIZE	SZ_32K
 #define SWITCHTEC_DMA_CQ_SIZE	SZ_32K
 
@@ -204,6 +208,11 @@ struct switchtec_dma_hw_se_desc {
 	__le16 sfid;
 };
 
+#define SWITCHTEC_SE_DFM		BIT(5)
+#define SWITCHTEC_SE_LIOF		BIT(6)
+#define SWITCHTEC_SE_BRR		BIT(7)
+#define SWITCHTEC_SE_CID_MASK		GENMASK(15, 0)
+
 #define SWITCHTEC_CE_SC_LEN_ERR		BIT(0)
 #define SWITCHTEC_CE_SC_UR		BIT(1)
 #define SWITCHTEC_CE_SC_CA		BIT(2)
@@ -603,6 +612,214 @@ static void switchtec_dma_synchronize(struct dma_chan *chan)
 	spin_unlock_bh(&swdma_chan->complete_lock);
 }
 
+static struct dma_async_tx_descriptor *
+switchtec_dma_prep_desc(struct dma_chan *c, u16 dst_fid, dma_addr_t dma_dst,
+			u16 src_fid, dma_addr_t dma_src, u64 data,
+			size_t len, unsigned long flags)
+	__acquires(swdma_chan->submit_lock)
+{
+	struct switchtec_dma_chan *swdma_chan =
+		container_of(c, struct switchtec_dma_chan, dma_chan);
+	struct switchtec_dma_desc *desc;
+	int head, tail;
+
+	spin_lock_bh(&swdma_chan->submit_lock);
+
+	if (!swdma_chan->ring_active)
+		goto err_unlock;
+
+	tail = READ_ONCE(swdma_chan->tail);
+	head = swdma_chan->head;
+
+	if (!CIRC_SPACE(head, tail, SWITCHTEC_DMA_RING_SIZE))
+		goto err_unlock;
+
+	desc = swdma_chan->desc_ring[head];
+
+	if (src_fid != SWITCHTEC_INVALID_HFID &&
+	    dst_fid != SWITCHTEC_INVALID_HFID)
+		desc->hw->ctrl |= SWITCHTEC_SE_DFM;
+
+	if (flags & DMA_PREP_INTERRUPT)
+		desc->hw->ctrl |= SWITCHTEC_SE_LIOF;
+
+	if (flags & DMA_PREP_FENCE)
+		desc->hw->ctrl |= SWITCHTEC_SE_BRR;
+
+	desc->txd.flags = flags;
+
+	desc->completed = false;
+	desc->hw->opc = SWITCHTEC_DMA_OPC_MEMCPY;
+	desc->hw->addr_lo = cpu_to_le32(lower_32_bits(dma_src));
+	desc->hw->addr_hi = cpu_to_le32(upper_32_bits(dma_src));
+	desc->hw->daddr_lo = cpu_to_le32(lower_32_bits(dma_dst));
+	desc->hw->daddr_hi = cpu_to_le32(upper_32_bits(dma_dst));
+	desc->hw->byte_cnt = cpu_to_le32(len);
+	desc->hw->tlp_setting = 0;
+	desc->hw->dfid = cpu_to_le16(dst_fid);
+	desc->hw->sfid = cpu_to_le16(src_fid);
+	swdma_chan->cid &= SWITCHTEC_SE_CID_MASK;
+	desc->hw->cid = cpu_to_le16(swdma_chan->cid++);
+	desc->orig_size = len;
+
+	/* return with the lock held, it will be released in tx_submit */
+
+	return &desc->txd;
+
+err_unlock:
+	/*
+	 * Keep sparse happy by restoring an even lock count on
+	 * this lock.
+	 */
+	__acquire(swdma_chan->submit_lock);
+
+	spin_unlock_bh(&swdma_chan->submit_lock);
+	return NULL;
+}
+
+static struct dma_async_tx_descriptor *
+switchtec_dma_prep_memcpy(struct dma_chan *c, dma_addr_t dma_dst,
+			  dma_addr_t dma_src, size_t len, unsigned long flags)
+	__acquires(swdma_chan->submit_lock)
+{
+	if (len > SWITCHTEC_DESC_MAX_SIZE) {
+		/*
+		 * Keep sparse happy by restoring an even lock count on
+		 * this lock.
+		 */
+		__acquire(swdma_chan->submit_lock);
+		return NULL;
+	}
+
+	return switchtec_dma_prep_desc(c, SWITCHTEC_INVALID_HFID, dma_dst,
+				       SWITCHTEC_INVALID_HFID, dma_src, 0, len,
+				       flags);
+}
+
+static dma_cookie_t
+switchtec_dma_tx_submit(struct dma_async_tx_descriptor *desc)
+	__releases(swdma_chan->submit_lock)
+{
+	struct switchtec_dma_chan *swdma_chan =
+		container_of(desc->chan, struct switchtec_dma_chan, dma_chan);
+	dma_cookie_t cookie;
+	int head;
+
+	head = swdma_chan->head + 1;
+	head &= SWITCHTEC_DMA_RING_SIZE - 1;
+
+	/*
+	 * Ensure the desc updates are visible before updating the head index
+	 */
+	smp_store_release(&swdma_chan->head, head);
+
+	cookie = dma_cookie_assign(desc);
+
+	spin_unlock_bh(&swdma_chan->submit_lock);
+
+	return cookie;
+}
+
+static enum dma_status switchtec_dma_tx_status(struct dma_chan *chan,
+		dma_cookie_t cookie, struct dma_tx_state *txstate)
+{
+	struct switchtec_dma_chan *swdma_chan =
+		container_of(chan, struct switchtec_dma_chan, dma_chan);
+	enum dma_status ret;
+
+	ret = dma_cookie_status(chan, cookie, txstate);
+	if (ret == DMA_COMPLETE)
+		return ret;
+
+	/*
+	 * For jobs where the interrupts are disabled, this is the only place
+	 * to process the completions returned by the hardware. Callers that
+	 * disable interrupts must call tx_status() to determine when a job
+	 * is done, so it is safe to process completions here. If a job has
+	 * interrupts enabled, then the completions will normally be processed
+	 * in the tasklet that is triggered by the interrupt and tx_status()
+	 * does not need to be called.
+	 */
+	switchtec_dma_cleanup_completed(swdma_chan);
+
+	return dma_cookie_status(chan, cookie, txstate);
+}
+
+static void switchtec_dma_issue_pending(struct dma_chan *chan)
+{
+	struct switchtec_dma_chan *swdma_chan =
+		container_of(chan, struct switchtec_dma_chan, dma_chan);
+	struct switchtec_dma_dev *swdma_dev = swdma_chan->swdma_dev;
+
+	/*
+	 * The sq_tail register is actually for the head of the
+	 * submisssion queue. Chip has the opposite define of head/tail
+	 * to the Linux kernel.
+	 */
+
+	rcu_read_lock();
+	if (!rcu_dereference(swdma_dev->pdev)) {
+		rcu_read_unlock();
+		return;
+	}
+
+	spin_lock_bh(&swdma_chan->submit_lock);
+	writew(swdma_chan->head, &swdma_chan->mmio_chan_hw->sq_tail);
+	spin_unlock_bh(&swdma_chan->submit_lock);
+
+	rcu_read_unlock();
+}
+
+static int switchtec_dma_pause(struct dma_chan *chan)
+{
+	struct switchtec_dma_chan *swdma_chan =
+		container_of(chan, struct switchtec_dma_chan, dma_chan);
+	struct chan_hw_regs __iomem *chan_hw = swdma_chan->mmio_chan_hw;
+	struct pci_dev *pdev;
+	int ret;
+
+	rcu_read_lock();
+	pdev = rcu_dereference(swdma_chan->swdma_dev->pdev);
+	if (!pdev) {
+		ret = -ENODEV;
+		goto unlock_and_exit;
+	}
+
+	spin_lock(&swdma_chan->hw_ctrl_lock);
+	writeb(SWITCHTEC_CHAN_CTRL_PAUSE, &chan_hw->ctrl);
+	ret = wait_for_chan_status(chan_hw, SWITCHTEC_CHAN_STS_PAUSED, true);
+	spin_unlock(&swdma_chan->hw_ctrl_lock);
+
+unlock_and_exit:
+	rcu_read_unlock();
+	return ret;
+}
+
+static int switchtec_dma_resume(struct dma_chan *chan)
+{
+	struct switchtec_dma_chan *swdma_chan =
+		container_of(chan, struct switchtec_dma_chan, dma_chan);
+	struct chan_hw_regs __iomem *chan_hw = swdma_chan->mmio_chan_hw;
+	struct pci_dev *pdev;
+	int ret;
+
+	rcu_read_lock();
+	pdev = rcu_dereference(swdma_chan->swdma_dev->pdev);
+	if (!pdev) {
+		ret = -ENODEV;
+		goto unlock_and_exit;
+	}
+
+	spin_lock(&swdma_chan->hw_ctrl_lock);
+	writeb(0, &chan_hw->ctrl);
+	ret = wait_for_chan_status(chan_hw, SWITCHTEC_CHAN_STS_PAUSED, false);
+	spin_unlock(&swdma_chan->hw_ctrl_lock);
+
+unlock_and_exit:
+	rcu_read_unlock();
+	return ret;
+}
+
 static void switchtec_dma_desc_task(unsigned long data)
 {
 	struct switchtec_dma_chan *swdma_chan = (void *)data;
@@ -721,6 +938,7 @@ static int switchtec_dma_alloc_desc(struct switchtec_dma_chan *swdma_chan)
 		}
 
 		dma_async_tx_descriptor_init(&desc->txd, &swdma_chan->dma_chan);
+		desc->txd.tx_submit = switchtec_dma_tx_submit;
 		desc->hw = &swdma_chan->hw_sq[i];
 		desc->completed = true;
 
@@ -1047,10 +1265,17 @@ static int switchtec_dma_create(struct pci_dev *pdev)
 
 	dma = &swdma_dev->dma_dev;
 	dma->copy_align = DMAENGINE_ALIGN_8_BYTES;
+	dma_cap_set(DMA_MEMCPY, dma->cap_mask);
+	dma_cap_set(DMA_PRIVATE, dma->cap_mask);
 	dma->dev = get_device(&pdev->dev);
 
 	dma->device_alloc_chan_resources = switchtec_dma_alloc_chan_resources;
 	dma->device_free_chan_resources = switchtec_dma_free_chan_resources;
+	dma->device_prep_dma_memcpy = switchtec_dma_prep_memcpy;
+	dma->device_tx_status = switchtec_dma_tx_status;
+	dma->device_issue_pending = switchtec_dma_issue_pending;
+	dma->device_pause = switchtec_dma_pause;
+	dma->device_resume = switchtec_dma_resume;
 	dma->device_terminate_all = switchtec_dma_terminate_all;
 	dma->device_synchronize = switchtec_dma_synchronize;
 	dma->device_release = switchtec_dma_release;