Adding upstream version 6.1.76.upstream/6.1.76

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1898 insertions, 0 deletions

diff --git a/drivers/net/wireless/ath/ath10k/snoc.c b/drivers/net/wireless/ath/ath10k/snoc.c
new file mode 100644
index 000000000..4b7266d92
--- /dev/null
+++ b/drivers/net/wireless/ath/ath10k/snoc.c
@@ -0,0 +1,1898 @@
+// SPDX-License-Identifier: ISC
+/*
+ * Copyright (c) 2018 The Linux Foundation. All rights reserved.
+ */
+
+#include <linux/bits.h>
+#include <linux/clk.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/property.h>
+#include <linux/regulator/consumer.h>
+#include <linux/remoteproc/qcom_rproc.h>
+#include <linux/of_address.h>
+#include <linux/iommu.h>
+
+#include "ce.h"
+#include "coredump.h"
+#include "debug.h"
+#include "hif.h"
+#include "htc.h"
+#include "snoc.h"
+
+#define ATH10K_SNOC_RX_POST_RETRY_MS 50
+#define CE_POLL_PIPE 4
+#define ATH10K_SNOC_WAKE_IRQ 2
+
+static char *const ce_name[] = {
+	"WLAN_CE_0",
+	"WLAN_CE_1",
+	"WLAN_CE_2",
+	"WLAN_CE_3",
+	"WLAN_CE_4",
+	"WLAN_CE_5",
+	"WLAN_CE_6",
+	"WLAN_CE_7",
+	"WLAN_CE_8",
+	"WLAN_CE_9",
+	"WLAN_CE_10",
+	"WLAN_CE_11",
+};
+
+static const char * const ath10k_regulators[] = {
+	"vdd-0.8-cx-mx",
+	"vdd-1.8-xo",
+	"vdd-1.3-rfa",
+	"vdd-3.3-ch0",
+	"vdd-3.3-ch1",
+};
+
+static const char * const ath10k_clocks[] = {
+	"cxo_ref_clk_pin", "qdss",
+};
+
+static void ath10k_snoc_htc_tx_cb(struct ath10k_ce_pipe *ce_state);
+static void ath10k_snoc_htt_tx_cb(struct ath10k_ce_pipe *ce_state);
+static void ath10k_snoc_htc_rx_cb(struct ath10k_ce_pipe *ce_state);
+static void ath10k_snoc_htt_rx_cb(struct ath10k_ce_pipe *ce_state);
+static void ath10k_snoc_htt_htc_rx_cb(struct ath10k_ce_pipe *ce_state);
+static void ath10k_snoc_pktlog_rx_cb(struct ath10k_ce_pipe *ce_state);
+
+static const struct ath10k_snoc_drv_priv drv_priv = {
+	.hw_rev = ATH10K_HW_WCN3990,
+	.dma_mask = DMA_BIT_MASK(35),
+	.msa_size = 0x100000,
+};
+
+#define WCN3990_SRC_WR_IDX_OFFSET 0x3C
+#define WCN3990_DST_WR_IDX_OFFSET 0x40
+
+static struct ath10k_shadow_reg_cfg target_shadow_reg_cfg_map[] = {
+		{
+			.ce_id = __cpu_to_le16(0),
+			.reg_offset = __cpu_to_le16(WCN3990_SRC_WR_IDX_OFFSET),
+		},
+
+		{
+			.ce_id = __cpu_to_le16(3),
+			.reg_offset = __cpu_to_le16(WCN3990_SRC_WR_IDX_OFFSET),
+		},
+
+		{
+			.ce_id = __cpu_to_le16(4),
+			.reg_offset = __cpu_to_le16(WCN3990_SRC_WR_IDX_OFFSET),
+		},
+
+		{
+			.ce_id = __cpu_to_le16(5),
+			.reg_offset =  __cpu_to_le16(WCN3990_SRC_WR_IDX_OFFSET),
+		},
+
+		{
+			.ce_id = __cpu_to_le16(7),
+			.reg_offset = __cpu_to_le16(WCN3990_SRC_WR_IDX_OFFSET),
+		},
+
+		{
+			.ce_id = __cpu_to_le16(1),
+			.reg_offset = __cpu_to_le16(WCN3990_DST_WR_IDX_OFFSET),
+		},
+
+		{
+			.ce_id = __cpu_to_le16(2),
+			.reg_offset =  __cpu_to_le16(WCN3990_DST_WR_IDX_OFFSET),
+		},
+
+		{
+			.ce_id = __cpu_to_le16(7),
+			.reg_offset =  __cpu_to_le16(WCN3990_DST_WR_IDX_OFFSET),
+		},
+
+		{
+			.ce_id = __cpu_to_le16(8),
+			.reg_offset =  __cpu_to_le16(WCN3990_DST_WR_IDX_OFFSET),
+		},
+
+		{
+			.ce_id = __cpu_to_le16(9),
+			.reg_offset = __cpu_to_le16(WCN3990_DST_WR_IDX_OFFSET),
+		},
+
+		{
+			.ce_id = __cpu_to_le16(10),
+			.reg_offset =  __cpu_to_le16(WCN3990_DST_WR_IDX_OFFSET),
+		},
+
+		{
+			.ce_id = __cpu_to_le16(11),
+			.reg_offset = __cpu_to_le16(WCN3990_DST_WR_IDX_OFFSET),
+		},
+};
+
+static struct ce_attr host_ce_config_wlan[] = {
+	/* CE0: host->target HTC control streams */
+	{
+		.flags = CE_ATTR_FLAGS,
+		.src_nentries = 16,
+		.src_sz_max = 2048,
+		.dest_nentries = 0,
+		.send_cb = ath10k_snoc_htc_tx_cb,
+	},
+
+	/* CE1: target->host HTT + HTC control */
+	{
+		.flags = CE_ATTR_FLAGS,
+		.src_nentries = 0,
+		.src_sz_max = 2048,
+		.dest_nentries = 512,
+		.recv_cb = ath10k_snoc_htt_htc_rx_cb,
+	},
+
+	/* CE2: target->host WMI */
+	{
+		.flags = CE_ATTR_FLAGS,
+		.src_nentries = 0,
+		.src_sz_max = 2048,
+		.dest_nentries = 64,
+		.recv_cb = ath10k_snoc_htc_rx_cb,
+	},
+
+	/* CE3: host->target WMI */
+	{
+		.flags = CE_ATTR_FLAGS,
+		.src_nentries = 32,
+		.src_sz_max = 2048,
+		.dest_nentries = 0,
+		.send_cb = ath10k_snoc_htc_tx_cb,
+	},
+
+	/* CE4: host->target HTT */
+	{
+		.flags = CE_ATTR_FLAGS | CE_ATTR_DIS_INTR,
+		.src_nentries = 2048,
+		.src_sz_max = 256,
+		.dest_nentries = 0,
+		.send_cb = ath10k_snoc_htt_tx_cb,
+	},
+
+	/* CE5: target->host HTT (ipa_uc->target ) */
+	{
+		.flags = CE_ATTR_FLAGS,
+		.src_nentries = 0,
+		.src_sz_max = 512,
+		.dest_nentries = 512,
+		.recv_cb = ath10k_snoc_htt_rx_cb,
+	},
+
+	/* CE6: target autonomous hif_memcpy */
+	{
+		.flags = CE_ATTR_FLAGS,
+		.src_nentries = 0,
+		.src_sz_max = 0,
+		.dest_nentries = 0,
+	},
+
+	/* CE7: ce_diag, the Diagnostic Window */
+	{
+		.flags = CE_ATTR_FLAGS,
+		.src_nentries = 2,
+		.src_sz_max = 2048,
+		.dest_nentries = 2,
+	},
+
+	/* CE8: Target to uMC */
+	{
+		.flags = CE_ATTR_FLAGS,
+		.src_nentries = 0,
+		.src_sz_max = 2048,
+		.dest_nentries = 128,
+	},
+
+	/* CE9 target->host HTT */
+	{
+		.flags = CE_ATTR_FLAGS,
+		.src_nentries = 0,
+		.src_sz_max = 2048,
+		.dest_nentries = 512,
+		.recv_cb = ath10k_snoc_htt_htc_rx_cb,
+	},
+
+	/* CE10: target->host HTT */
+	{
+		.flags = CE_ATTR_FLAGS,
+		.src_nentries = 0,
+		.src_sz_max = 2048,
+		.dest_nentries = 512,
+		.recv_cb = ath10k_snoc_htt_htc_rx_cb,
+	},
+
+	/* CE11: target -> host PKTLOG */
+	{
+		.flags = CE_ATTR_FLAGS,
+		.src_nentries = 0,
+		.src_sz_max = 2048,
+		.dest_nentries = 512,
+		.recv_cb = ath10k_snoc_pktlog_rx_cb,
+	},
+};
+
+static struct ce_pipe_config target_ce_config_wlan[] = {
+	/* CE0: host->target HTC control and raw streams */
+	{
+		.pipenum = __cpu_to_le32(0),
+		.pipedir = __cpu_to_le32(PIPEDIR_OUT),
+		.nentries = __cpu_to_le32(32),
+		.nbytes_max = __cpu_to_le32(2048),
+		.flags = __cpu_to_le32(CE_ATTR_FLAGS),
+		.reserved = __cpu_to_le32(0),
+	},
+
+	/* CE1: target->host HTT + HTC control */
+	{
+		.pipenum = __cpu_to_le32(1),
+		.pipedir = __cpu_to_le32(PIPEDIR_IN),
+		.nentries = __cpu_to_le32(32),
+		.nbytes_max = __cpu_to_le32(2048),
+		.flags = __cpu_to_le32(CE_ATTR_FLAGS),
+		.reserved = __cpu_to_le32(0),
+	},
+
+	/* CE2: target->host WMI */
+	{
+		.pipenum = __cpu_to_le32(2),
+		.pipedir = __cpu_to_le32(PIPEDIR_IN),
+		.nentries = __cpu_to_le32(64),
+		.nbytes_max = __cpu_to_le32(2048),
+		.flags = __cpu_to_le32(CE_ATTR_FLAGS),
+		.reserved = __cpu_to_le32(0),
+	},
+
+	/* CE3: host->target WMI */
+	{
+		.pipenum = __cpu_to_le32(3),
+		.pipedir = __cpu_to_le32(PIPEDIR_OUT),
+		.nentries = __cpu_to_le32(32),
+		.nbytes_max = __cpu_to_le32(2048),
+		.flags = __cpu_to_le32(CE_ATTR_FLAGS),
+		.reserved = __cpu_to_le32(0),
+	},
+
+	/* CE4: host->target HTT */
+	{
+		.pipenum = __cpu_to_le32(4),
+		.pipedir = __cpu_to_le32(PIPEDIR_OUT),
+		.nentries = __cpu_to_le32(256),
+		.nbytes_max = __cpu_to_le32(256),
+		.flags = __cpu_to_le32(CE_ATTR_FLAGS | CE_ATTR_DIS_INTR),
+		.reserved = __cpu_to_le32(0),
+	},
+
+	/* CE5: target->host HTT (HIF->HTT) */
+	{
+		.pipenum = __cpu_to_le32(5),
+		.pipedir = __cpu_to_le32(PIPEDIR_OUT),
+		.nentries = __cpu_to_le32(1024),
+		.nbytes_max = __cpu_to_le32(64),
+		.flags = __cpu_to_le32(CE_ATTR_FLAGS | CE_ATTR_DIS_INTR),
+		.reserved = __cpu_to_le32(0),
+	},
+
+	/* CE6: Reserved for target autonomous hif_memcpy */
+	{
+		.pipenum = __cpu_to_le32(6),
+		.pipedir = __cpu_to_le32(PIPEDIR_INOUT),
+		.nentries = __cpu_to_le32(32),
+		.nbytes_max = __cpu_to_le32(16384),
+		.flags = __cpu_to_le32(CE_ATTR_FLAGS),
+		.reserved = __cpu_to_le32(0),
+	},
+
+	/* CE7 used only by Host */
+	{
+		.pipenum = __cpu_to_le32(7),
+		.pipedir = __cpu_to_le32(4),
+		.nentries = __cpu_to_le32(0),
+		.nbytes_max = __cpu_to_le32(0),
+		.flags = __cpu_to_le32(CE_ATTR_FLAGS | CE_ATTR_DIS_INTR),
+		.reserved = __cpu_to_le32(0),
+	},
+
+	/* CE8 Target to uMC */
+	{
+		.pipenum = __cpu_to_le32(8),
+		.pipedir = __cpu_to_le32(PIPEDIR_IN),
+		.nentries = __cpu_to_le32(32),
+		.nbytes_max = __cpu_to_le32(2048),
+		.flags = __cpu_to_le32(0),
+		.reserved = __cpu_to_le32(0),
+	},
+
+	/* CE9 target->host HTT */
+	{
+		.pipenum = __cpu_to_le32(9),
+		.pipedir = __cpu_to_le32(PIPEDIR_IN),
+		.nentries = __cpu_to_le32(32),
+		.nbytes_max = __cpu_to_le32(2048),
+		.flags = __cpu_to_le32(CE_ATTR_FLAGS),
+		.reserved = __cpu_to_le32(0),
+	},
+
+	/* CE10 target->host HTT */
+	{
+		.pipenum = __cpu_to_le32(10),
+		.pipedir = __cpu_to_le32(PIPEDIR_IN),
+		.nentries = __cpu_to_le32(32),
+		.nbytes_max = __cpu_to_le32(2048),
+		.flags = __cpu_to_le32(CE_ATTR_FLAGS),
+		.reserved = __cpu_to_le32(0),
+	},
+
+	/* CE11 target autonomous qcache memcpy */
+	{
+		.pipenum = __cpu_to_le32(11),
+		.pipedir = __cpu_to_le32(PIPEDIR_IN),
+		.nentries = __cpu_to_le32(32),
+		.nbytes_max = __cpu_to_le32(2048),
+		.flags = __cpu_to_le32(CE_ATTR_FLAGS),
+		.reserved = __cpu_to_le32(0),
+	},
+};
+
+static struct ce_service_to_pipe target_service_to_ce_map_wlan[] = {
+	{
+		__cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_DATA_VO),
+		__cpu_to_le32(PIPEDIR_OUT),	/* out = UL = host -> target */
+		__cpu_to_le32(3),
+	},
+	{
+		__cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_DATA_VO),
+		__cpu_to_le32(PIPEDIR_IN),	/* in = DL = target -> host */
+		__cpu_to_le32(2),
+	},
+	{
+		__cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_DATA_BK),
+		__cpu_to_le32(PIPEDIR_OUT),	/* out = UL = host -> target */
+		__cpu_to_le32(3),
+	},
+	{
+		__cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_DATA_BK),
+		__cpu_to_le32(PIPEDIR_IN),	/* in = DL = target -> host */
+		__cpu_to_le32(2),
+	},
+	{
+		__cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_DATA_BE),
+		__cpu_to_le32(PIPEDIR_OUT),	/* out = UL = host -> target */
+		__cpu_to_le32(3),
+	},
+	{
+		__cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_DATA_BE),
+		__cpu_to_le32(PIPEDIR_IN),	/* in = DL = target -> host */
+		__cpu_to_le32(2),
+	},
+	{
+		__cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_DATA_VI),
+		__cpu_to_le32(PIPEDIR_OUT),	/* out = UL = host -> target */
+		__cpu_to_le32(3),
+	},
+	{
+		__cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_DATA_VI),
+		__cpu_to_le32(PIPEDIR_IN),	/* in = DL = target -> host */
+		__cpu_to_le32(2),
+	},
+	{
+		__cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_CONTROL),
+		__cpu_to_le32(PIPEDIR_OUT),	/* out = UL = host -> target */
+		__cpu_to_le32(3),
+	},
+	{
+		__cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_CONTROL),
+		__cpu_to_le32(PIPEDIR_IN),	/* in = DL = target -> host */
+		__cpu_to_le32(2),
+	},
+	{
+		__cpu_to_le32(ATH10K_HTC_SVC_ID_RSVD_CTRL),
+		__cpu_to_le32(PIPEDIR_OUT),	/* out = UL = host -> target */
+		__cpu_to_le32(0),
+	},
+	{
+		__cpu_to_le32(ATH10K_HTC_SVC_ID_RSVD_CTRL),
+		__cpu_to_le32(PIPEDIR_IN),	/* in = DL = target -> host */
+		__cpu_to_le32(2),
+	},
+	{ /* not used */
+		__cpu_to_le32(ATH10K_HTC_SVC_ID_TEST_RAW_STREAMS),
+		__cpu_to_le32(PIPEDIR_OUT),	/* out = UL = host -> target */
+		__cpu_to_le32(0),
+	},
+	{ /* not used */
+		__cpu_to_le32(ATH10K_HTC_SVC_ID_TEST_RAW_STREAMS),
+		__cpu_to_le32(PIPEDIR_IN),	/* in = DL = target -> host */
+		__cpu_to_le32(2),
+	},
+	{
+		__cpu_to_le32(ATH10K_HTC_SVC_ID_HTT_DATA_MSG),
+		__cpu_to_le32(PIPEDIR_OUT),	/* out = UL = host -> target */
+		__cpu_to_le32(4),
+	},
+	{
+		__cpu_to_le32(ATH10K_HTC_SVC_ID_HTT_DATA_MSG),
+		__cpu_to_le32(PIPEDIR_IN),	/* in = DL = target -> host */
+		__cpu_to_le32(1),
+	},
+	{ /* not used */
+		__cpu_to_le32(ATH10K_HTC_SVC_ID_TEST_RAW_STREAMS),
+		__cpu_to_le32(PIPEDIR_OUT),
+		__cpu_to_le32(5),
+	},
+	{ /* in = DL = target -> host */
+		__cpu_to_le32(ATH10K_HTC_SVC_ID_HTT_DATA2_MSG),
+		__cpu_to_le32(PIPEDIR_IN),	/* in = DL = target -> host */
+		__cpu_to_le32(9),
+	},
+	{ /* in = DL = target -> host */
+		__cpu_to_le32(ATH10K_HTC_SVC_ID_HTT_DATA3_MSG),
+		__cpu_to_le32(PIPEDIR_IN),	/* in = DL = target -> host */
+		__cpu_to_le32(10),
+	},
+	{ /* in = DL = target -> host pktlog */
+		__cpu_to_le32(ATH10K_HTC_SVC_ID_HTT_LOG_MSG),
+		__cpu_to_le32(PIPEDIR_IN),	/* in = DL = target -> host */
+		__cpu_to_le32(11),
+	},
+	/* (Additions here) */
+
+	{ /* must be last */
+		__cpu_to_le32(0),
+		__cpu_to_le32(0),
+		__cpu_to_le32(0),
+	},
+};
+
+static void ath10k_snoc_write32(struct ath10k *ar, u32 offset, u32 value)
+{
+	struct ath10k_snoc *ar_snoc = ath10k_snoc_priv(ar);
+
+	iowrite32(value, ar_snoc->mem + offset);
+}
+
+static u32 ath10k_snoc_read32(struct ath10k *ar, u32 offset)
+{
+	struct ath10k_snoc *ar_snoc = ath10k_snoc_priv(ar);
+	u32 val;
+
+	val = ioread32(ar_snoc->mem + offset);
+
+	return val;
+}
+
+static int __ath10k_snoc_rx_post_buf(struct ath10k_snoc_pipe *pipe)
+{
+	struct ath10k_ce_pipe *ce_pipe = pipe->ce_hdl;
+	struct ath10k *ar = pipe->hif_ce_state;
+	struct ath10k_ce *ce = ath10k_ce_priv(ar);
+	struct sk_buff *skb;
+	dma_addr_t paddr;
+	int ret;
+
+	skb = dev_alloc_skb(pipe->buf_sz);
+	if (!skb)
+		return -ENOMEM;
+
+	WARN_ONCE((unsigned long)skb->data & 3, "unaligned skb");
+
+	paddr = dma_map_single(ar->dev, skb->data,
+			       skb->len + skb_tailroom(skb),
+			       DMA_FROM_DEVICE);
+	if (unlikely(dma_mapping_error(ar->dev, paddr))) {
+		ath10k_warn(ar, "failed to dma map snoc rx buf\n");
+		dev_kfree_skb_any(skb);
+		return -EIO;
+	}
+
+	ATH10K_SKB_RXCB(skb)->paddr = paddr;
+
+	spin_lock_bh(&ce->ce_lock);
+	ret = ce_pipe->ops->ce_rx_post_buf(ce_pipe, skb, paddr);
+	spin_unlock_bh(&ce->ce_lock);
+	if (ret) {
+		dma_unmap_single(ar->dev, paddr, skb->len + skb_tailroom(skb),
+				 DMA_FROM_DEVICE);
+		dev_kfree_skb_any(skb);
+		return ret;
+	}
+
+	return 0;
+}
+
+static void ath10k_snoc_rx_post_pipe(struct ath10k_snoc_pipe *pipe)
+{
+	struct ath10k *ar = pipe->hif_ce_state;
+	struct ath10k_ce *ce = ath10k_ce_priv(ar);
+	struct ath10k_snoc *ar_snoc = ath10k_snoc_priv(ar);
+	struct ath10k_ce_pipe *ce_pipe = pipe->ce_hdl;
+	int ret, num;
+
+	if (pipe->buf_sz == 0)
+		return;
+
+	if (!ce_pipe->dest_ring)
+		return;
+
+	spin_lock_bh(&ce->ce_lock);
+	num = __ath10k_ce_rx_num_free_bufs(ce_pipe);
+	spin_unlock_bh(&ce->ce_lock);
+	while (num--) {
+		ret = __ath10k_snoc_rx_post_buf(pipe);
+		if (ret) {
+			if (ret == -ENOSPC)
+				break;
+			ath10k_warn(ar, "failed to post rx buf: %d\n", ret);
+			mod_timer(&ar_snoc->rx_post_retry, jiffies +
+				  ATH10K_SNOC_RX_POST_RETRY_MS);
+			break;
+		}
+	}
+}
+
+static void ath10k_snoc_rx_post(struct ath10k *ar)
+{
+	struct ath10k_snoc *ar_snoc = ath10k_snoc_priv(ar);
+	int i;
+
+	for (i = 0; i < CE_COUNT; i++)
+		ath10k_snoc_rx_post_pipe(&ar_snoc->pipe_info[i]);
+}
+
+static void ath10k_snoc_process_rx_cb(struct ath10k_ce_pipe *ce_state,
+				      void (*callback)(struct ath10k *ar,
+						       struct sk_buff *skb))
+{
+	struct ath10k *ar = ce_state->ar;
+	struct ath10k_snoc *ar_snoc = ath10k_snoc_priv(ar);
+	struct ath10k_snoc_pipe *pipe_info =  &ar_snoc->pipe_info[ce_state->id];
+	struct sk_buff *skb;
+	struct sk_buff_head list;
+	void *transfer_context;
+	unsigned int nbytes, max_nbytes;
+
+	__skb_queue_head_init(&list);
+	while (ath10k_ce_completed_recv_next(ce_state, &transfer_context,
+					     &nbytes) == 0) {
+		skb = transfer_context;
+		max_nbytes = skb->len + skb_tailroom(skb);
+		dma_unmap_single(ar->dev, ATH10K_SKB_RXCB(skb)->paddr,
+				 max_nbytes, DMA_FROM_DEVICE);
+
+		if (unlikely(max_nbytes < nbytes)) {
+			ath10k_warn(ar, "rxed more than expected (nbytes %d, max %d)\n",
+				    nbytes, max_nbytes);
+			dev_kfree_skb_any(skb);
+			continue;
+		}
+
+		skb_put(skb, nbytes);
+		__skb_queue_tail(&list, skb);
+	}
+
+	while ((skb = __skb_dequeue(&list))) {
+		ath10k_dbg(ar, ATH10K_DBG_SNOC, "snoc rx ce pipe %d len %d\n",
+			   ce_state->id, skb->len);
+
+		callback(ar, skb);
+	}
+
+	ath10k_snoc_rx_post_pipe(pipe_info);
+}
+
+static void ath10k_snoc_htc_rx_cb(struct ath10k_ce_pipe *ce_state)
+{
+	ath10k_snoc_process_rx_cb(ce_state, ath10k_htc_rx_completion_handler);
+}
+
+static void ath10k_snoc_htt_htc_rx_cb(struct ath10k_ce_pipe *ce_state)
+{
+	/* CE4 polling needs to be done whenever CE pipe which transports
+	 * HTT Rx (target->host) is processed.
+	 */
+	ath10k_ce_per_engine_service(ce_state->ar, CE_POLL_PIPE);
+
+	ath10k_snoc_process_rx_cb(ce_state, ath10k_htc_rx_completion_handler);
+}
+
+/* Called by lower (CE) layer when data is received from the Target.
+ * WCN3990 firmware uses separate CE(CE11) to transfer pktlog data.
+ */
+static void ath10k_snoc_pktlog_rx_cb(struct ath10k_ce_pipe *ce_state)
+{
+	ath10k_snoc_process_rx_cb(ce_state, ath10k_htc_rx_completion_handler);
+}
+
+static void ath10k_snoc_htt_rx_deliver(struct ath10k *ar, struct sk_buff *skb)
+{
+	skb_pull(skb, sizeof(struct ath10k_htc_hdr));
+	ath10k_htt_t2h_msg_handler(ar, skb);
+}
+
+static void ath10k_snoc_htt_rx_cb(struct ath10k_ce_pipe *ce_state)
+{
+	ath10k_ce_per_engine_service(ce_state->ar, CE_POLL_PIPE);
+	ath10k_snoc_process_rx_cb(ce_state, ath10k_snoc_htt_rx_deliver);
+}
+
+static void ath10k_snoc_rx_replenish_retry(struct timer_list *t)
+{
+	struct ath10k_snoc *ar_snoc = from_timer(ar_snoc, t, rx_post_retry);
+	struct ath10k *ar = ar_snoc->ar;
+
+	ath10k_snoc_rx_post(ar);
+}
+
+static void ath10k_snoc_htc_tx_cb(struct ath10k_ce_pipe *ce_state)
+{
+	struct ath10k *ar = ce_state->ar;
+	struct sk_buff_head list;
+	struct sk_buff *skb;
+
+	__skb_queue_head_init(&list);
+	while (ath10k_ce_completed_send_next(ce_state, (void **)&skb) == 0) {
+		if (!skb)
+			continue;
+
+		__skb_queue_tail(&list, skb);
+	}
+
+	while ((skb = __skb_dequeue(&list)))
+		ath10k_htc_tx_completion_handler(ar, skb);
+}
+
+static void ath10k_snoc_htt_tx_cb(struct ath10k_ce_pipe *ce_state)
+{
+	struct ath10k *ar = ce_state->ar;
+	struct sk_buff *skb;
+
+	while (ath10k_ce_completed_send_next(ce_state, (void **)&skb) == 0) {
+		if (!skb)
+			continue;
+
+		dma_unmap_single(ar->dev, ATH10K_SKB_CB(skb)->paddr,
+				 skb->len, DMA_TO_DEVICE);
+		ath10k_htt_hif_tx_complete(ar, skb);
+	}
+}
+
+static int ath10k_snoc_hif_tx_sg(struct ath10k *ar, u8 pipe_id,
+				 struct ath10k_hif_sg_item *items, int n_items)
+{
+	struct ath10k_snoc *ar_snoc = ath10k_snoc_priv(ar);
+	struct ath10k_ce *ce = ath10k_ce_priv(ar);
+	struct ath10k_snoc_pipe *snoc_pipe;
+	struct ath10k_ce_pipe *ce_pipe;
+	int err, i = 0;
+
+	snoc_pipe = &ar_snoc->pipe_info[pipe_id];
+	ce_pipe = snoc_pipe->ce_hdl;
+	spin_lock_bh(&ce->ce_lock);
+
+	for (i = 0; i < n_items - 1; i++) {
+		ath10k_dbg(ar, ATH10K_DBG_SNOC,
+			   "snoc tx item %d paddr %pad len %d n_items %d\n",
+			   i, &items[i].paddr, items[i].len, n_items);
+
+		err = ath10k_ce_send_nolock(ce_pipe,
+					    items[i].transfer_context,
+					    items[i].paddr,
+					    items[i].len,
+					    items[i].transfer_id,
+					    CE_SEND_FLAG_GATHER);
+		if (err)
+			goto err;
+	}
+
+	ath10k_dbg(ar, ATH10K_DBG_SNOC,
+		   "snoc tx item %d paddr %pad len %d n_items %d\n",
+		   i, &items[i].paddr, items[i].len, n_items);
+
+	err = ath10k_ce_send_nolock(ce_pipe,
+				    items[i].transfer_context,
+				    items[i].paddr,
+				    items[i].len,
+				    items[i].transfer_id,
+				    0);
+	if (err)
+		goto err;
+
+	spin_unlock_bh(&ce->ce_lock);
+
+	return 0;
+
+err:
+	for (; i > 0; i--)
+		__ath10k_ce_send_revert(ce_pipe);
+
+	spin_unlock_bh(&ce->ce_lock);
+	return err;
+}
+
+static int ath10k_snoc_hif_get_target_info(struct ath10k *ar,
+					   struct bmi_target_info *target_info)
+{
+	target_info->version = ATH10K_HW_WCN3990;
+	target_info->type = ATH10K_HW_WCN3990;
+
+	return 0;
+}
+
+static u16 ath10k_snoc_hif_get_free_queue_number(struct ath10k *ar, u8 pipe)
+{
+	struct ath10k_snoc *ar_snoc = ath10k_snoc_priv(ar);
+
+	ath10k_dbg(ar, ATH10K_DBG_SNOC, "hif get free queue number\n");
+
+	return ath10k_ce_num_free_src_entries(ar_snoc->pipe_info[pipe].ce_hdl);
+}
+
+static void ath10k_snoc_hif_send_complete_check(struct ath10k *ar, u8 pipe,
+						int force)
+{
+	int resources;
+
+	ath10k_dbg(ar, ATH10K_DBG_SNOC, "snoc hif send complete check\n");
+
+	if (!force) {
+		resources = ath10k_snoc_hif_get_free_queue_number(ar, pipe);
+
+		if (resources > (host_ce_config_wlan[pipe].src_nentries >> 1))
+			return;
+	}
+	ath10k_ce_per_engine_service(ar, pipe);
+}
+
+static int ath10k_snoc_hif_map_service_to_pipe(struct ath10k *ar,
+					       u16 service_id,
+					       u8 *ul_pipe, u8 *dl_pipe)
+{
+	const struct ce_service_to_pipe *entry;
+	bool ul_set = false, dl_set = false;
+	int i;
+
+	ath10k_dbg(ar, ATH10K_DBG_SNOC, "snoc hif map service\n");
+
+	for (i = 0; i < ARRAY_SIZE(target_service_to_ce_map_wlan); i++) {
+		entry = &target_service_to_ce_map_wlan[i];
+
+		if (__le32_to_cpu(entry->service_id) != service_id)
+			continue;
+
+		switch (__le32_to_cpu(entry->pipedir)) {
+		case PIPEDIR_NONE:
+			break;
+		case PIPEDIR_IN:
+			WARN_ON(dl_set);
+			*dl_pipe = __le32_to_cpu(entry->pipenum);
+			dl_set = true;
+			break;
+		case PIPEDIR_OUT:
+			WARN_ON(ul_set);
+			*ul_pipe = __le32_to_cpu(entry->pipenum);
+			ul_set = true;
+			break;
+		case PIPEDIR_INOUT:
+			WARN_ON(dl_set);
+			WARN_ON(ul_set);
+			*dl_pipe = __le32_to_cpu(entry->pipenum);
+			*ul_pipe = __le32_to_cpu(entry->pipenum);
+			dl_set = true;
+			ul_set = true;
+			break;
+		}
+	}
+
+	if (!ul_set || !dl_set)
+		return -ENOENT;
+
+	return 0;
+}
+
+static void ath10k_snoc_hif_get_default_pipe(struct ath10k *ar,
+					     u8 *ul_pipe, u8 *dl_pipe)
+{
+	ath10k_dbg(ar, ATH10K_DBG_SNOC, "snoc hif get default pipe\n");
+
+	(void)ath10k_snoc_hif_map_service_to_pipe(ar,
+						 ATH10K_HTC_SVC_ID_RSVD_CTRL,
+						 ul_pipe, dl_pipe);
+}
+
+static inline void ath10k_snoc_irq_disable(struct ath10k *ar)
+{
+	struct ath10k_snoc *ar_snoc = ath10k_snoc_priv(ar);
+	int id;
+
+	for (id = 0; id < CE_COUNT_MAX; id++)
+		disable_irq(ar_snoc->ce_irqs[id].irq_line);
+}
+
+static inline void ath10k_snoc_irq_enable(struct ath10k *ar)
+{
+	struct ath10k_snoc *ar_snoc = ath10k_snoc_priv(ar);
+	int id;
+
+	for (id = 0; id < CE_COUNT_MAX; id++)
+		enable_irq(ar_snoc->ce_irqs[id].irq_line);
+}
+
+static void ath10k_snoc_rx_pipe_cleanup(struct ath10k_snoc_pipe *snoc_pipe)
+{
+	struct ath10k_ce_pipe *ce_pipe;
+	struct ath10k_ce_ring *ce_ring;
+	struct sk_buff *skb;
+	struct ath10k *ar;
+	int i;
+
+	ar = snoc_pipe->hif_ce_state;
+	ce_pipe = snoc_pipe->ce_hdl;
+	ce_ring = ce_pipe->dest_ring;
+
+	if (!ce_ring)
+		return;
+
+	if (!snoc_pipe->buf_sz)
+		return;
+
+	for (i = 0; i < ce_ring->nentries; i++) {
+		skb = ce_ring->per_transfer_context[i];
+		if (!skb)
+			continue;
+
+		ce_ring->per_transfer_context[i] = NULL;
+
+		dma_unmap_single(ar->dev, ATH10K_SKB_RXCB(skb)->paddr,
+				 skb->len + skb_tailroom(skb),
+				 DMA_FROM_DEVICE);
+		dev_kfree_skb_any(skb);
+	}
+}
+
+static void ath10k_snoc_tx_pipe_cleanup(struct ath10k_snoc_pipe *snoc_pipe)
+{
+	struct ath10k_ce_pipe *ce_pipe;
+	struct ath10k_ce_ring *ce_ring;
+	struct sk_buff *skb;
+	struct ath10k *ar;
+	int i;
+
+	ar = snoc_pipe->hif_ce_state;
+	ce_pipe = snoc_pipe->ce_hdl;
+	ce_ring = ce_pipe->src_ring;
+
+	if (!ce_ring)
+		return;
+
+	if (!snoc_pipe->buf_sz)
+		return;
+
+	for (i = 0; i < ce_ring->nentries; i++) {
+		skb = ce_ring->per_transfer_context[i];
+		if (!skb)
+			continue;
+
+		ce_ring->per_transfer_context[i] = NULL;
+
+		ath10k_htc_tx_completion_handler(ar, skb);
+	}
+}
+
+static void ath10k_snoc_buffer_cleanup(struct ath10k *ar)
+{
+	struct ath10k_snoc *ar_snoc = ath10k_snoc_priv(ar);
+	struct ath10k_snoc_pipe *pipe_info;
+	int pipe_num;
+
+	del_timer_sync(&ar_snoc->rx_post_retry);
+	for (pipe_num = 0; pipe_num < CE_COUNT; pipe_num++) {
+		pipe_info = &ar_snoc->pipe_info[pipe_num];
+		ath10k_snoc_rx_pipe_cleanup(pipe_info);
+		ath10k_snoc_tx_pipe_cleanup(pipe_info);
+	}
+}
+
+static void ath10k_snoc_hif_stop(struct ath10k *ar)
+{
+	if (!test_bit(ATH10K_FLAG_CRASH_FLUSH, &ar->dev_flags))
+		ath10k_snoc_irq_disable(ar);
+
+	ath10k_core_napi_sync_disable(ar);
+	ath10k_snoc_buffer_cleanup(ar);
+	ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot hif stop\n");
+}
+
+static int ath10k_snoc_hif_start(struct ath10k *ar)
+{
+	struct ath10k_snoc *ar_snoc = ath10k_snoc_priv(ar);
+
+	bitmap_clear(ar_snoc->pending_ce_irqs, 0, CE_COUNT_MAX);
+
+	ath10k_core_napi_enable(ar);
+	ath10k_snoc_irq_enable(ar);
+	ath10k_snoc_rx_post(ar);
+
+	clear_bit(ATH10K_SNOC_FLAG_RECOVERY, &ar_snoc->flags);
+
+	ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot hif start\n");
+
+	return 0;
+}
+
+static int ath10k_snoc_init_pipes(struct ath10k *ar)
+{
+	int i, ret;
+
+	for (i = 0; i < CE_COUNT; i++) {
+		ret = ath10k_ce_init_pipe(ar, i, &host_ce_config_wlan[i]);
+		if (ret) {
+			ath10k_err(ar, "failed to initialize copy engine pipe %d: %d\n",
+				   i, ret);
+			return ret;
+		}
+	}
+
+	return 0;
+}
+
+static int ath10k_snoc_wlan_enable(struct ath10k *ar,
+				   enum ath10k_firmware_mode fw_mode)
+{
+	struct ath10k_tgt_pipe_cfg tgt_cfg[CE_COUNT_MAX];
+	struct ath10k_qmi_wlan_enable_cfg cfg;
+	enum wlfw_driver_mode_enum_v01 mode;
+	int pipe_num;
+
+	for (pipe_num = 0; pipe_num < CE_COUNT_MAX; pipe_num++) {
+		tgt_cfg[pipe_num].pipe_num =
+				target_ce_config_wlan[pipe_num].pipenum;
+		tgt_cfg[pipe_num].pipe_dir =
+				target_ce_config_wlan[pipe_num].pipedir;
+		tgt_cfg[pipe_num].nentries =
+				target_ce_config_wlan[pipe_num].nentries;
+		tgt_cfg[pipe_num].nbytes_max =
+				target_ce_config_wlan[pipe_num].nbytes_max;
+		tgt_cfg[pipe_num].flags =
+				target_ce_config_wlan[pipe_num].flags;
+		tgt_cfg[pipe_num].reserved = 0;
+	}
+
+	cfg.num_ce_tgt_cfg = sizeof(target_ce_config_wlan) /
+				sizeof(struct ath10k_tgt_pipe_cfg);
+	cfg.ce_tgt_cfg = (struct ath10k_tgt_pipe_cfg *)
+		&tgt_cfg;
+	cfg.num_ce_svc_pipe_cfg = sizeof(target_service_to_ce_map_wlan) /
+				  sizeof(struct ath10k_svc_pipe_cfg);
+	cfg.ce_svc_cfg = (struct ath10k_svc_pipe_cfg *)
+		&target_service_to_ce_map_wlan;
+	cfg.num_shadow_reg_cfg = ARRAY_SIZE(target_shadow_reg_cfg_map);
+	cfg.shadow_reg_cfg = (struct ath10k_shadow_reg_cfg *)
+		&target_shadow_reg_cfg_map;
+
+	switch (fw_mode) {
+	case ATH10K_FIRMWARE_MODE_NORMAL:
+		mode = QMI_WLFW_MISSION_V01;
+		break;
+	case ATH10K_FIRMWARE_MODE_UTF:
+		mode = QMI_WLFW_FTM_V01;
+		break;
+	default:
+		ath10k_err(ar, "invalid firmware mode %d\n", fw_mode);
+		return -EINVAL;
+	}
+
+	return ath10k_qmi_wlan_enable(ar, &cfg, mode,
+				       NULL);
+}
+
+static int ath10k_hw_power_on(struct ath10k *ar)
+{
+	struct ath10k_snoc *ar_snoc = ath10k_snoc_priv(ar);
+	int ret;
+
+	ath10k_dbg(ar, ATH10K_DBG_SNOC, "soc power on\n");
+
+	ret = regulator_bulk_enable(ar_snoc->num_vregs, ar_snoc->vregs);
+	if (ret)
+		return ret;
+
+	ret = clk_bulk_prepare_enable(ar_snoc->num_clks, ar_snoc->clks);
+	if (ret)
+		goto vreg_off;
+
+	return ret;
+
+vreg_off:
+	regulator_bulk_disable(ar_snoc->num_vregs, ar_snoc->vregs);
+	return ret;
+}
+
+static int ath10k_hw_power_off(struct ath10k *ar)
+{
+	struct ath10k_snoc *ar_snoc = ath10k_snoc_priv(ar);
+
+	ath10k_dbg(ar, ATH10K_DBG_SNOC, "soc power off\n");
+
+	clk_bulk_disable_unprepare(ar_snoc->num_clks, ar_snoc->clks);
+
+	return regulator_bulk_disable(ar_snoc->num_vregs, ar_snoc->vregs);
+}
+
+static void ath10k_snoc_wlan_disable(struct ath10k *ar)
+{
+	struct ath10k_snoc *ar_snoc = ath10k_snoc_priv(ar);
+
+	/* If both ATH10K_FLAG_CRASH_FLUSH and ATH10K_SNOC_FLAG_RECOVERY
+	 * flags are not set, it means that the driver has restarted
+	 * due to a crash inject via debugfs. In this case, the driver
+	 * needs to restart the firmware and hence send qmi wlan disable,
+	 * during the driver restart sequence.
+	 */
+	if (!test_bit(ATH10K_FLAG_CRASH_FLUSH, &ar->dev_flags) ||
+	    !test_bit(ATH10K_SNOC_FLAG_RECOVERY, &ar_snoc->flags))
+		ath10k_qmi_wlan_disable(ar);
+}
+
+static void ath10k_snoc_hif_power_down(struct ath10k *ar)
+{
+	ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot hif power down\n");
+
+	ath10k_snoc_wlan_disable(ar);
+	ath10k_ce_free_rri(ar);
+	ath10k_hw_power_off(ar);
+}
+
+static int ath10k_snoc_hif_power_up(struct ath10k *ar,
+				    enum ath10k_firmware_mode fw_mode)
+{
+	int ret;
+
+	ath10k_dbg(ar, ATH10K_DBG_SNOC, "%s:WCN3990 driver state = %d\n",
+		   __func__, ar->state);
+
+	ret = ath10k_hw_power_on(ar);
+	if (ret) {
+		ath10k_err(ar, "failed to power on device: %d\n", ret);
+		return ret;
+	}
+
+	ret = ath10k_snoc_wlan_enable(ar, fw_mode);
+	if (ret) {
+		ath10k_err(ar, "failed to enable wcn3990: %d\n", ret);
+		goto err_hw_power_off;
+	}
+
+	ath10k_ce_alloc_rri(ar);
+
+	ret = ath10k_snoc_init_pipes(ar);
+	if (ret) {
+		ath10k_err(ar, "failed to initialize CE: %d\n", ret);
+		goto err_free_rri;
+	}
+
+	ath10k_ce_enable_interrupts(ar);
+
+	return 0;
+
+err_free_rri:
+	ath10k_ce_free_rri(ar);
+	ath10k_snoc_wlan_disable(ar);
+
+err_hw_power_off:
+	ath10k_hw_power_off(ar);
+
+	return ret;
+}
+
+static int ath10k_snoc_hif_set_target_log_mode(struct ath10k *ar,
+					       u8 fw_log_mode)
+{
+	u8 fw_dbg_mode;
+
+	if (fw_log_mode)
+		fw_dbg_mode = ATH10K_ENABLE_FW_LOG_CE;
+	else
+		fw_dbg_mode = ATH10K_ENABLE_FW_LOG_DIAG;
+
+	return ath10k_qmi_set_fw_log_mode(ar, fw_dbg_mode);
+}
+
+#ifdef CONFIG_PM
+static int ath10k_snoc_hif_suspend(struct ath10k *ar)
+{
+	struct ath10k_snoc *ar_snoc = ath10k_snoc_priv(ar);
+	int ret;
+
+	if (!device_may_wakeup(ar->dev))
+		return -EPERM;
+
+	ret = enable_irq_wake(ar_snoc->ce_irqs[ATH10K_SNOC_WAKE_IRQ].irq_line);
+	if (ret) {
+		ath10k_err(ar, "failed to enable wakeup irq :%d\n", ret);
+		return ret;
+	}
+
+	ath10k_dbg(ar, ATH10K_DBG_SNOC, "snoc device suspended\n");
+
+	return ret;
+}
+
+static int ath10k_snoc_hif_resume(struct ath10k *ar)
+{
+	struct ath10k_snoc *ar_snoc = ath10k_snoc_priv(ar);
+	int ret;
+
+	if (!device_may_wakeup(ar->dev))
+		return -EPERM;
+
+	ret = disable_irq_wake(ar_snoc->ce_irqs[ATH10K_SNOC_WAKE_IRQ].irq_line);
+	if (ret) {
+		ath10k_err(ar, "failed to disable wakeup irq: %d\n", ret);
+		return ret;
+	}
+
+	ath10k_dbg(ar, ATH10K_DBG_SNOC, "snoc device resumed\n");
+
+	return ret;
+}
+#endif
+
+static const struct ath10k_hif_ops ath10k_snoc_hif_ops = {
+	.read32		= ath10k_snoc_read32,
+	.write32	= ath10k_snoc_write32,
+	.start		= ath10k_snoc_hif_start,
+	.stop		= ath10k_snoc_hif_stop,
+	.map_service_to_pipe	= ath10k_snoc_hif_map_service_to_pipe,
+	.get_default_pipe	= ath10k_snoc_hif_get_default_pipe,
+	.power_up		= ath10k_snoc_hif_power_up,
+	.power_down		= ath10k_snoc_hif_power_down,
+	.tx_sg			= ath10k_snoc_hif_tx_sg,
+	.send_complete_check	= ath10k_snoc_hif_send_complete_check,
+	.get_free_queue_number	= ath10k_snoc_hif_get_free_queue_number,
+	.get_target_info	= ath10k_snoc_hif_get_target_info,
+	.set_target_log_mode    = ath10k_snoc_hif_set_target_log_mode,
+
+#ifdef CONFIG_PM
+	.suspend                = ath10k_snoc_hif_suspend,
+	.resume                 = ath10k_snoc_hif_resume,
+#endif
+};
+
+static const struct ath10k_bus_ops ath10k_snoc_bus_ops = {
+	.read32		= ath10k_snoc_read32,
+	.write32	= ath10k_snoc_write32,
+};
+
+static int ath10k_snoc_get_ce_id_from_irq(struct ath10k *ar, int irq)
+{
+	struct ath10k_snoc *ar_snoc = ath10k_snoc_priv(ar);
+	int i;
+
+	for (i = 0; i < CE_COUNT_MAX; i++) {
+		if (ar_snoc->ce_irqs[i].irq_line == irq)
+			return i;
+	}
+	ath10k_err(ar, "No matching CE id for irq %d\n", irq);
+
+	return -EINVAL;
+}
+
+static irqreturn_t ath10k_snoc_per_engine_handler(int irq, void *arg)
+{
+	struct ath10k *ar = arg;
+	struct ath10k_snoc *ar_snoc = ath10k_snoc_priv(ar);
+	int ce_id = ath10k_snoc_get_ce_id_from_irq(ar, irq);
+
+	if (ce_id < 0 || ce_id >= ARRAY_SIZE(ar_snoc->pipe_info)) {
+		ath10k_warn(ar, "unexpected/invalid irq %d ce_id %d\n", irq,
+			    ce_id);
+		return IRQ_HANDLED;
+	}
+
+	ath10k_ce_disable_interrupt(ar, ce_id);
+	set_bit(ce_id, ar_snoc->pending_ce_irqs);
+
+	napi_schedule(&ar->napi);
+
+	return IRQ_HANDLED;
+}
+
+static int ath10k_snoc_napi_poll(struct napi_struct *ctx, int budget)
+{
+	struct ath10k *ar = container_of(ctx, struct ath10k, napi);
+	struct ath10k_snoc *ar_snoc = ath10k_snoc_priv(ar);
+	int done = 0;
+	int ce_id;
+
+	if (test_bit(ATH10K_FLAG_CRASH_FLUSH, &ar->dev_flags)) {
+		napi_complete(ctx);
+		return done;
+	}
+
+	for (ce_id = 0; ce_id < CE_COUNT; ce_id++)
+		if (test_and_clear_bit(ce_id, ar_snoc->pending_ce_irqs)) {
+			ath10k_ce_per_engine_service(ar, ce_id);
+			ath10k_ce_enable_interrupt(ar, ce_id);
+		}
+
+	done = ath10k_htt_txrx_compl_task(ar, budget);
+
+	if (done < budget)
+		napi_complete(ctx);
+
+	return done;
+}
+
+static void ath10k_snoc_init_napi(struct ath10k *ar)
+{
+	netif_napi_add(&ar->napi_dev, &ar->napi, ath10k_snoc_napi_poll);
+}
+
+static int ath10k_snoc_request_irq(struct ath10k *ar)
+{
+	struct ath10k_snoc *ar_snoc = ath10k_snoc_priv(ar);
+	int ret, id;
+
+	for (id = 0; id < CE_COUNT_MAX; id++) {
+		ret = request_irq(ar_snoc->ce_irqs[id].irq_line,
+				  ath10k_snoc_per_engine_handler,
+				  IRQF_NO_AUTOEN, ce_name[id], ar);
+		if (ret) {
+			ath10k_err(ar,
+				   "failed to register IRQ handler for CE %d: %d\n",
+				   id, ret);
+			goto err_irq;
+		}
+	}
+
+	return 0;
+
+err_irq:
+	for (id -= 1; id >= 0; id--)
+		free_irq(ar_snoc->ce_irqs[id].irq_line, ar);
+
+	return ret;
+}
+
+static void ath10k_snoc_free_irq(struct ath10k *ar)
+{
+	struct ath10k_snoc *ar_snoc = ath10k_snoc_priv(ar);
+	int id;
+
+	for (id = 0; id < CE_COUNT_MAX; id++)
+		free_irq(ar_snoc->ce_irqs[id].irq_line, ar);
+}
+
+static int ath10k_snoc_resource_init(struct ath10k *ar)
+{
+	struct ath10k_snoc *ar_snoc = ath10k_snoc_priv(ar);
+	struct platform_device *pdev;
+	struct resource *res;
+	int i, ret = 0;
+
+	pdev = ar_snoc->dev;
+	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "membase");
+	if (!res) {
+		ath10k_err(ar, "Memory base not found in DT\n");
+		return -EINVAL;
+	}
+
+	ar_snoc->mem_pa = res->start;
+	ar_snoc->mem = devm_ioremap(&pdev->dev, ar_snoc->mem_pa,
+				    resource_size(res));
+	if (!ar_snoc->mem) {
+		ath10k_err(ar, "Memory base ioremap failed with physical address %pa\n",
+			   &ar_snoc->mem_pa);
+		return -EINVAL;
+	}
+
+	for (i = 0; i < CE_COUNT; i++) {
+		ret = platform_get_irq(ar_snoc->dev, i);
+		if (ret < 0)
+			return ret;
+		ar_snoc->ce_irqs[i].irq_line = ret;
+	}
+
+	ret = device_property_read_u32(&pdev->dev, "qcom,xo-cal-data",
+				       &ar_snoc->xo_cal_data);
+	ath10k_dbg(ar, ATH10K_DBG_SNOC, "snoc xo-cal-data return %d\n", ret);
+	if (ret == 0) {
+		ar_snoc->xo_cal_supported = true;
+		ath10k_dbg(ar, ATH10K_DBG_SNOC, "xo cal data %x\n",
+			   ar_snoc->xo_cal_data);
+	}
+
+	return 0;
+}
+
+static void ath10k_snoc_quirks_init(struct ath10k *ar)
+{
+	struct ath10k_snoc *ar_snoc = ath10k_snoc_priv(ar);
+	struct device *dev = &ar_snoc->dev->dev;
+
+	if (of_property_read_bool(dev->of_node, "qcom,snoc-host-cap-8bit-quirk"))
+		set_bit(ATH10K_SNOC_FLAG_8BIT_HOST_CAP_QUIRK, &ar_snoc->flags);
+}
+
+int ath10k_snoc_fw_indication(struct ath10k *ar, u64 type)
+{
+	struct ath10k_snoc *ar_snoc = ath10k_snoc_priv(ar);
+	struct ath10k_bus_params bus_params = {};
+	int ret;
+
+	if (test_bit(ATH10K_SNOC_FLAG_UNREGISTERING, &ar_snoc->flags))
+		return 0;
+
+	switch (type) {
+	case ATH10K_QMI_EVENT_FW_READY_IND:
+		if (test_bit(ATH10K_SNOC_FLAG_REGISTERED, &ar_snoc->flags)) {
+			ath10k_core_start_recovery(ar);
+			break;
+		}
+
+		bus_params.dev_type = ATH10K_DEV_TYPE_LL;
+		bus_params.chip_id = ar_snoc->target_info.soc_version;
+		ret = ath10k_core_register(ar, &bus_params);
+		if (ret) {
+			ath10k_err(ar, "Failed to register driver core: %d\n",
+				   ret);
+			return ret;
+		}
+		set_bit(ATH10K_SNOC_FLAG_REGISTERED, &ar_snoc->flags);
+		break;
+	case ATH10K_QMI_EVENT_FW_DOWN_IND:
+		set_bit(ATH10K_SNOC_FLAG_RECOVERY, &ar_snoc->flags);
+		set_bit(ATH10K_FLAG_CRASH_FLUSH, &ar->dev_flags);
+		break;
+	default:
+		ath10k_err(ar, "invalid fw indication: %llx\n", type);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int ath10k_snoc_setup_resource(struct ath10k *ar)
+{
+	struct ath10k_snoc *ar_snoc = ath10k_snoc_priv(ar);
+	struct ath10k_ce *ce = ath10k_ce_priv(ar);
+	struct ath10k_snoc_pipe *pipe;
+	int i, ret;
+
+	timer_setup(&ar_snoc->rx_post_retry, ath10k_snoc_rx_replenish_retry, 0);
+	spin_lock_init(&ce->ce_lock);
+	for (i = 0; i < CE_COUNT; i++) {
+		pipe = &ar_snoc->pipe_info[i];
+		pipe->ce_hdl = &ce->ce_states[i];
+		pipe->pipe_num = i;
+		pipe->hif_ce_state = ar;
+
+		ret = ath10k_ce_alloc_pipe(ar, i, &host_ce_config_wlan[i]);
+		if (ret) {
+			ath10k_err(ar, "failed to allocate copy engine pipe %d: %d\n",
+				   i, ret);
+			return ret;
+		}
+
+		pipe->buf_sz = host_ce_config_wlan[i].src_sz_max;
+	}
+	ath10k_snoc_init_napi(ar);
+
+	return 0;
+}
+
+static void ath10k_snoc_release_resource(struct ath10k *ar)
+{
+	int i;
+
+	netif_napi_del(&ar->napi);
+	for (i = 0; i < CE_COUNT; i++)
+		ath10k_ce_free_pipe(ar, i);
+}
+
+static void ath10k_msa_dump_memory(struct ath10k *ar,
+				   struct ath10k_fw_crash_data *crash_data)
+{
+	const struct ath10k_hw_mem_layout *mem_layout;
+	const struct ath10k_mem_region *current_region;
+	struct ath10k_dump_ram_data_hdr *hdr;
+	size_t buf_len;
+	u8 *buf;
+
+	if (!crash_data || !crash_data->ramdump_buf)
+		return;
+
+	mem_layout = ath10k_coredump_get_mem_layout(ar);
+	if (!mem_layout)
+		return;
+
+	current_region = &mem_layout->region_table.regions[0];
+
+	buf = crash_data->ramdump_buf;
+	buf_len = crash_data->ramdump_buf_len;
+	memset(buf, 0, buf_len);
+
+	/* Reserve space for the header. */
+	hdr = (void *)buf;
+	buf += sizeof(*hdr);
+	buf_len -= sizeof(*hdr);
+
+	hdr->region_type = cpu_to_le32(current_region->type);
+	hdr->start = cpu_to_le32((unsigned long)ar->msa.vaddr);
+	hdr->length = cpu_to_le32(ar->msa.mem_size);
+
+	if (current_region->len < ar->msa.mem_size) {
+		memcpy(buf, ar->msa.vaddr, current_region->len);
+		ath10k_warn(ar, "msa dump length is less than msa size %x, %x\n",
+			    current_region->len, ar->msa.mem_size);
+	} else {
+		memcpy(buf, ar->msa.vaddr, ar->msa.mem_size);
+	}
+}
+
+void ath10k_snoc_fw_crashed_dump(struct ath10k *ar)
+{
+	struct ath10k_fw_crash_data *crash_data;
+	char guid[UUID_STRING_LEN + 1];
+
+	mutex_lock(&ar->dump_mutex);
+
+	spin_lock_bh(&ar->data_lock);
+	ar->stats.fw_crash_counter++;
+	spin_unlock_bh(&ar->data_lock);
+
+	crash_data = ath10k_coredump_new(ar);
+
+	if (crash_data)
+		scnprintf(guid, sizeof(guid), "%pUl", &crash_data->guid);
+	else
+		scnprintf(guid, sizeof(guid), "n/a");
+
+	ath10k_err(ar, "firmware crashed! (guid %s)\n", guid);
+	ath10k_print_driver_info(ar);
+	ath10k_msa_dump_memory(ar, crash_data);
+	mutex_unlock(&ar->dump_mutex);
+}
+
+static int ath10k_snoc_modem_notify(struct notifier_block *nb, unsigned long action,
+				    void *data)
+{
+	struct ath10k_snoc *ar_snoc = container_of(nb, struct ath10k_snoc, nb);
+	struct ath10k *ar = ar_snoc->ar;
+	struct qcom_ssr_notify_data *notify_data = data;
+
+	switch (action) {
+	case QCOM_SSR_BEFORE_POWERUP:
+		ath10k_dbg(ar, ATH10K_DBG_SNOC, "received modem starting event\n");
+		clear_bit(ATH10K_SNOC_FLAG_MODEM_STOPPED, &ar_snoc->flags);
+		break;
+
+	case QCOM_SSR_AFTER_POWERUP:
+		ath10k_dbg(ar, ATH10K_DBG_SNOC, "received modem running event\n");
+		break;
+
+	case QCOM_SSR_BEFORE_SHUTDOWN:
+		ath10k_dbg(ar, ATH10K_DBG_SNOC, "received modem %s event\n",
+			   notify_data->crashed ? "crashed" : "stopping");
+		if (!notify_data->crashed)
+			set_bit(ATH10K_SNOC_FLAG_MODEM_STOPPED, &ar_snoc->flags);
+		else
+			clear_bit(ATH10K_SNOC_FLAG_MODEM_STOPPED, &ar_snoc->flags);
+		break;
+
+	case QCOM_SSR_AFTER_SHUTDOWN:
+		ath10k_dbg(ar, ATH10K_DBG_SNOC, "received modem offline event\n");
+		break;
+
+	default:
+		ath10k_err(ar, "received unrecognized event %lu\n", action);
+		break;
+	}
+
+	return NOTIFY_OK;
+}
+
+static int ath10k_modem_init(struct ath10k *ar)
+{
+	struct ath10k_snoc *ar_snoc = ath10k_snoc_priv(ar);
+	void *notifier;
+	int ret;
+
+	ar_snoc->nb.notifier_call = ath10k_snoc_modem_notify;
+
+	notifier = qcom_register_ssr_notifier("mpss", &ar_snoc->nb);
+	if (IS_ERR(notifier)) {
+		ret = PTR_ERR(notifier);
+		ath10k_err(ar, "failed to initialize modem notifier: %d\n", ret);
+		return ret;
+	}
+
+	ar_snoc->notifier = notifier;
+
+	return 0;
+}
+
+static void ath10k_modem_deinit(struct ath10k *ar)
+{
+	int ret;
+	struct ath10k_snoc *ar_snoc = ath10k_snoc_priv(ar);
+
+	ret = qcom_unregister_ssr_notifier(ar_snoc->notifier, &ar_snoc->nb);
+	if (ret)
+		ath10k_err(ar, "error %d unregistering notifier\n", ret);
+}
+
+static int ath10k_setup_msa_resources(struct ath10k *ar, u32 msa_size)
+{
+	struct device *dev = ar->dev;
+	struct device_node *node;
+	struct resource r;
+	int ret;
+
+	node = of_parse_phandle(dev->of_node, "memory-region", 0);
+	if (node) {
+		ret = of_address_to_resource(node, 0, &r);
+		of_node_put(node);
+		if (ret) {
+			dev_err(dev, "failed to resolve msa fixed region\n");
+			return ret;
+		}
+
+		ar->msa.paddr = r.start;
+		ar->msa.mem_size = resource_size(&r);
+		ar->msa.vaddr = devm_memremap(dev, ar->msa.paddr,
+					      ar->msa.mem_size,
+					      MEMREMAP_WT);
+		if (IS_ERR(ar->msa.vaddr)) {
+			dev_err(dev, "failed to map memory region: %pa\n",
+				&r.start);
+			return PTR_ERR(ar->msa.vaddr);
+		}
+	} else {
+		ar->msa.vaddr = dmam_alloc_coherent(dev, msa_size,
+						    &ar->msa.paddr,
+						    GFP_KERNEL);
+		if (!ar->msa.vaddr) {
+			ath10k_err(ar, "failed to allocate dma memory for msa region\n");
+			return -ENOMEM;
+		}
+		ar->msa.mem_size = msa_size;
+	}
+
+	ath10k_dbg(ar, ATH10K_DBG_QMI, "qmi msa.paddr: %pad , msa.vaddr: 0x%p\n",
+		   &ar->msa.paddr,
+		   ar->msa.vaddr);
+
+	return 0;
+}
+
+static int ath10k_fw_init(struct ath10k *ar)
+{
+	struct ath10k_snoc *ar_snoc = ath10k_snoc_priv(ar);
+	struct device *host_dev = &ar_snoc->dev->dev;
+	struct platform_device_info info;
+	struct iommu_domain *iommu_dom;
+	struct platform_device *pdev;
+	struct device_node *node;
+	int ret;
+
+	node = of_get_child_by_name(host_dev->of_node, "wifi-firmware");
+	if (!node) {
+		ar_snoc->use_tz = true;
+		return 0;
+	}
+
+	memset(&info, 0, sizeof(info));
+	info.fwnode = &node->fwnode;
+	info.parent = host_dev;
+	info.name = node->name;
+	info.dma_mask = DMA_BIT_MASK(32);
+
+	pdev = platform_device_register_full(&info);
+	if (IS_ERR(pdev)) {
+		of_node_put(node);
+		return PTR_ERR(pdev);
+	}
+
+	pdev->dev.of_node = node;
+
+	ret = of_dma_configure(&pdev->dev, node, true);
+	if (ret) {
+		ath10k_err(ar, "dma configure fail: %d\n", ret);
+		goto err_unregister;
+	}
+
+	ar_snoc->fw.dev = &pdev->dev;
+
+	iommu_dom = iommu_domain_alloc(&platform_bus_type);
+	if (!iommu_dom) {
+		ath10k_err(ar, "failed to allocate iommu domain\n");
+		ret = -ENOMEM;
+		goto err_unregister;
+	}
+
+	ret = iommu_attach_device(iommu_dom, ar_snoc->fw.dev);
+	if (ret) {
+		ath10k_err(ar, "could not attach device: %d\n", ret);
+		goto err_iommu_free;
+	}
+
+	ar_snoc->fw.iommu_domain = iommu_dom;
+	ar_snoc->fw.fw_start_addr = ar->msa.paddr;
+
+	ret = iommu_map(iommu_dom, ar_snoc->fw.fw_start_addr,
+			ar->msa.paddr, ar->msa.mem_size,
+			IOMMU_READ | IOMMU_WRITE);
+	if (ret) {
+		ath10k_err(ar, "failed to map firmware region: %d\n", ret);
+		goto err_iommu_detach;
+	}
+
+	of_node_put(node);
+
+	return 0;
+
+err_iommu_detach:
+	iommu_detach_device(iommu_dom, ar_snoc->fw.dev);
+
+err_iommu_free:
+	iommu_domain_free(iommu_dom);
+
+err_unregister:
+	platform_device_unregister(pdev);
+	of_node_put(node);
+
+	return ret;
+}
+
+static int ath10k_fw_deinit(struct ath10k *ar)
+{
+	struct ath10k_snoc *ar_snoc = ath10k_snoc_priv(ar);
+	const size_t mapped_size = ar_snoc->fw.mapped_mem_size;
+	struct iommu_domain *iommu;
+	size_t unmapped_size;
+
+	if (ar_snoc->use_tz)
+		return 0;
+
+	iommu = ar_snoc->fw.iommu_domain;
+
+	unmapped_size = iommu_unmap(iommu, ar_snoc->fw.fw_start_addr,
+				    mapped_size);
+	if (unmapped_size != mapped_size)
+		ath10k_err(ar, "failed to unmap firmware: %zu\n",
+			   unmapped_size);
+
+	iommu_detach_device(iommu, ar_snoc->fw.dev);
+	iommu_domain_free(iommu);
+
+	platform_device_unregister(to_platform_device(ar_snoc->fw.dev));
+
+	return 0;
+}
+
+static const struct of_device_id ath10k_snoc_dt_match[] = {
+	{ .compatible = "qcom,wcn3990-wifi",
+	 .data = &drv_priv,
+	},
+	{ }
+};
+MODULE_DEVICE_TABLE(of, ath10k_snoc_dt_match);
+
+static int ath10k_snoc_probe(struct platform_device *pdev)
+{
+	const struct ath10k_snoc_drv_priv *drv_data;
+	struct ath10k_snoc *ar_snoc;
+	struct device *dev;
+	struct ath10k *ar;
+	u32 msa_size;
+	int ret;
+	u32 i;
+
+	dev = &pdev->dev;
+	drv_data = device_get_match_data(dev);
+	if (!drv_data) {
+		dev_err(dev, "failed to find matching device tree id\n");
+		return -EINVAL;
+	}
+
+	ret = dma_set_mask_and_coherent(dev, drv_data->dma_mask);
+	if (ret) {
+		dev_err(dev, "failed to set dma mask: %d\n", ret);
+		return ret;
+	}
+
+	ar = ath10k_core_create(sizeof(*ar_snoc), dev, ATH10K_BUS_SNOC,
+				drv_data->hw_rev, &ath10k_snoc_hif_ops);
+	if (!ar) {
+		dev_err(dev, "failed to allocate core\n");
+		return -ENOMEM;
+	}
+
+	ar_snoc = ath10k_snoc_priv(ar);
+	ar_snoc->dev = pdev;
+	platform_set_drvdata(pdev, ar);
+	ar_snoc->ar = ar;
+	ar_snoc->ce.bus_ops = &ath10k_snoc_bus_ops;
+	ar->ce_priv = &ar_snoc->ce;
+	msa_size = drv_data->msa_size;
+
+	ath10k_snoc_quirks_init(ar);
+
+	ret = ath10k_snoc_resource_init(ar);
+	if (ret) {
+		ath10k_warn(ar, "failed to initialize resource: %d\n", ret);
+		goto err_core_destroy;
+	}
+
+	ret = ath10k_snoc_setup_resource(ar);
+	if (ret) {
+		ath10k_warn(ar, "failed to setup resource: %d\n", ret);
+		goto err_core_destroy;
+	}
+	ret = ath10k_snoc_request_irq(ar);
+	if (ret) {
+		ath10k_warn(ar, "failed to request irqs: %d\n", ret);
+		goto err_release_resource;
+	}
+
+	ar_snoc->num_vregs = ARRAY_SIZE(ath10k_regulators);
+	ar_snoc->vregs = devm_kcalloc(&pdev->dev, ar_snoc->num_vregs,
+				      sizeof(*ar_snoc->vregs), GFP_KERNEL);
+	if (!ar_snoc->vregs) {
+		ret = -ENOMEM;
+		goto err_free_irq;
+	}
+	for (i = 0; i < ar_snoc->num_vregs; i++)
+		ar_snoc->vregs[i].supply = ath10k_regulators[i];
+
+	ret = devm_regulator_bulk_get(&pdev->dev, ar_snoc->num_vregs,
+				      ar_snoc->vregs);
+	if (ret < 0)
+		goto err_free_irq;
+
+	ar_snoc->num_clks = ARRAY_SIZE(ath10k_clocks);
+	ar_snoc->clks = devm_kcalloc(&pdev->dev, ar_snoc->num_clks,
+				     sizeof(*ar_snoc->clks), GFP_KERNEL);
+	if (!ar_snoc->clks) {
+		ret = -ENOMEM;
+		goto err_free_irq;
+	}
+
+	for (i = 0; i < ar_snoc->num_clks; i++)
+		ar_snoc->clks[i].id = ath10k_clocks[i];
+
+	ret = devm_clk_bulk_get_optional(&pdev->dev, ar_snoc->num_clks,
+					 ar_snoc->clks);
+	if (ret)
+		goto err_free_irq;
+
+	ret = ath10k_setup_msa_resources(ar, msa_size);
+	if (ret) {
+		ath10k_warn(ar, "failed to setup msa resources: %d\n", ret);
+		goto err_free_irq;
+	}
+
+	ret = ath10k_fw_init(ar);
+	if (ret) {
+		ath10k_err(ar, "failed to initialize firmware: %d\n", ret);
+		goto err_free_irq;
+	}
+
+	ret = ath10k_qmi_init(ar, msa_size);
+	if (ret) {
+		ath10k_warn(ar, "failed to register wlfw qmi client: %d\n", ret);
+		goto err_fw_deinit;
+	}
+
+	ret = ath10k_modem_init(ar);
+	if (ret)
+		goto err_qmi_deinit;
+
+	ath10k_dbg(ar, ATH10K_DBG_SNOC, "snoc probe\n");
+
+	return 0;
+
+err_qmi_deinit:
+	ath10k_qmi_deinit(ar);
+
+err_fw_deinit:
+	ath10k_fw_deinit(ar);
+
+err_free_irq:
+	ath10k_snoc_free_irq(ar);
+
+err_release_resource:
+	ath10k_snoc_release_resource(ar);
+
+err_core_destroy:
+	ath10k_core_destroy(ar);
+
+	return ret;
+}
+
+static int ath10k_snoc_free_resources(struct ath10k *ar)
+{
+	struct ath10k_snoc *ar_snoc = ath10k_snoc_priv(ar);
+
+	ath10k_dbg(ar, ATH10K_DBG_SNOC, "snoc free resources\n");
+
+	set_bit(ATH10K_SNOC_FLAG_UNREGISTERING, &ar_snoc->flags);
+
+	ath10k_core_unregister(ar);
+	ath10k_fw_deinit(ar);
+	ath10k_snoc_free_irq(ar);
+	ath10k_snoc_release_resource(ar);
+	ath10k_modem_deinit(ar);
+	ath10k_qmi_deinit(ar);
+	ath10k_core_destroy(ar);
+
+	return 0;
+}
+
+static int ath10k_snoc_remove(struct platform_device *pdev)
+{
+	struct ath10k *ar = platform_get_drvdata(pdev);
+	struct ath10k_snoc *ar_snoc = ath10k_snoc_priv(ar);
+
+	ath10k_dbg(ar, ATH10K_DBG_SNOC, "snoc remove\n");
+
+	reinit_completion(&ar->driver_recovery);
+
+	if (test_bit(ATH10K_SNOC_FLAG_RECOVERY, &ar_snoc->flags))
+		wait_for_completion_timeout(&ar->driver_recovery, 3 * HZ);
+
+	ath10k_snoc_free_resources(ar);
+
+	return 0;
+}
+
+static void ath10k_snoc_shutdown(struct platform_device *pdev)
+{
+	struct ath10k *ar = platform_get_drvdata(pdev);
+
+	ath10k_dbg(ar, ATH10K_DBG_SNOC, "snoc shutdown\n");
+	ath10k_snoc_free_resources(ar);
+}
+
+static struct platform_driver ath10k_snoc_driver = {
+	.probe  = ath10k_snoc_probe,
+	.remove = ath10k_snoc_remove,
+	.shutdown =  ath10k_snoc_shutdown,
+	.driver = {
+		.name   = "ath10k_snoc",
+		.of_match_table = ath10k_snoc_dt_match,
+	},
+};
+module_platform_driver(ath10k_snoc_driver);
+
+MODULE_AUTHOR("Qualcomm");
+MODULE_LICENSE("Dual BSD/GPL");
+MODULE_DESCRIPTION("Driver support for Atheros WCN3990 SNOC devices");