Adding upstream version 6.6.15.upstream/6.6.15

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

1 files changed, 1048 insertions, 0 deletions

diff --git a/drivers/net/wireless/ath/ath11k/pci.c b/drivers/net/wireless/ath/ath11k/pci.c
new file mode 100644
index 0000000000..09e65c5e55
--- /dev/null
+++ b/drivers/net/wireless/ath/ath11k/pci.c
@@ -0,0 +1,1048 @@
+// SPDX-License-Identifier: BSD-3-Clause-Clear
+/*
+ * Copyright (c) 2019-2020 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2021-2023 Qualcomm Innovation Center, Inc. All rights reserved.
+ */
+
+#include <linux/module.h>
+#include <linux/msi.h>
+#include <linux/pci.h>
+#include <linux/of.h>
+
+#include "pci.h"
+#include "core.h"
+#include "hif.h"
+#include "mhi.h"
+#include "debug.h"
+#include "pcic.h"
+#include "qmi.h"
+
+#define ATH11K_PCI_BAR_NUM		0
+#define ATH11K_PCI_DMA_MASK		32
+
+#define TCSR_SOC_HW_VERSION		0x0224
+#define TCSR_SOC_HW_VERSION_MAJOR_MASK	GENMASK(11, 8)
+#define TCSR_SOC_HW_VERSION_MINOR_MASK	GENMASK(7, 0)
+
+#define QCA6390_DEVICE_ID		0x1101
+#define QCN9074_DEVICE_ID		0x1104
+#define WCN6855_DEVICE_ID		0x1103
+
+static const struct pci_device_id ath11k_pci_id_table[] = {
+	{ PCI_VDEVICE(QCOM, QCA6390_DEVICE_ID) },
+	{ PCI_VDEVICE(QCOM, WCN6855_DEVICE_ID) },
+	{ PCI_VDEVICE(QCOM, QCN9074_DEVICE_ID) },
+	{0}
+};
+
+MODULE_DEVICE_TABLE(pci, ath11k_pci_id_table);
+
+static int ath11k_pci_bus_wake_up(struct ath11k_base *ab)
+{
+	struct ath11k_pci *ab_pci = ath11k_pci_priv(ab);
+
+	return mhi_device_get_sync(ab_pci->mhi_ctrl->mhi_dev);
+}
+
+static void ath11k_pci_bus_release(struct ath11k_base *ab)
+{
+	struct ath11k_pci *ab_pci = ath11k_pci_priv(ab);
+
+	mhi_device_put(ab_pci->mhi_ctrl->mhi_dev);
+}
+
+static u32 ath11k_pci_get_window_start(struct ath11k_base *ab, u32 offset)
+{
+	if (!ab->hw_params.static_window_map)
+		return ATH11K_PCI_WINDOW_START;
+
+	if ((offset ^ HAL_SEQ_WCSS_UMAC_OFFSET) < ATH11K_PCI_WINDOW_RANGE_MASK)
+		/* if offset lies within DP register range, use 3rd window */
+		return 3 * ATH11K_PCI_WINDOW_START;
+	else if ((offset ^ HAL_SEQ_WCSS_UMAC_CE0_SRC_REG(ab)) <
+		 ATH11K_PCI_WINDOW_RANGE_MASK)
+		 /* if offset lies within CE register range, use 2nd window */
+		return 2 * ATH11K_PCI_WINDOW_START;
+	else
+		return ATH11K_PCI_WINDOW_START;
+}
+
+static inline void ath11k_pci_select_window(struct ath11k_pci *ab_pci, u32 offset)
+{
+	struct ath11k_base *ab = ab_pci->ab;
+
+	u32 window = FIELD_GET(ATH11K_PCI_WINDOW_VALUE_MASK, offset);
+
+	lockdep_assert_held(&ab_pci->window_lock);
+
+	if (window != ab_pci->register_window) {
+		iowrite32(ATH11K_PCI_WINDOW_ENABLE_BIT | window,
+			  ab->mem + ATH11K_PCI_WINDOW_REG_ADDRESS);
+		ioread32(ab->mem + ATH11K_PCI_WINDOW_REG_ADDRESS);
+		ab_pci->register_window = window;
+	}
+}
+
+static void
+ath11k_pci_window_write32(struct ath11k_base *ab, u32 offset, u32 value)
+{
+	struct ath11k_pci *ab_pci = ath11k_pci_priv(ab);
+	u32 window_start;
+
+	window_start = ath11k_pci_get_window_start(ab, offset);
+
+	if (window_start == ATH11K_PCI_WINDOW_START) {
+		spin_lock_bh(&ab_pci->window_lock);
+		ath11k_pci_select_window(ab_pci, offset);
+		iowrite32(value, ab->mem + window_start +
+			  (offset & ATH11K_PCI_WINDOW_RANGE_MASK));
+		spin_unlock_bh(&ab_pci->window_lock);
+	} else {
+		iowrite32(value, ab->mem + window_start +
+			  (offset & ATH11K_PCI_WINDOW_RANGE_MASK));
+	}
+}
+
+static u32 ath11k_pci_window_read32(struct ath11k_base *ab, u32 offset)
+{
+	struct ath11k_pci *ab_pci = ath11k_pci_priv(ab);
+	u32 window_start, val;
+
+	window_start = ath11k_pci_get_window_start(ab, offset);
+
+	if (window_start == ATH11K_PCI_WINDOW_START) {
+		spin_lock_bh(&ab_pci->window_lock);
+		ath11k_pci_select_window(ab_pci, offset);
+		val = ioread32(ab->mem + window_start +
+			       (offset & ATH11K_PCI_WINDOW_RANGE_MASK));
+		spin_unlock_bh(&ab_pci->window_lock);
+	} else {
+		val = ioread32(ab->mem + window_start +
+			       (offset & ATH11K_PCI_WINDOW_RANGE_MASK));
+	}
+
+	return val;
+}
+
+int ath11k_pci_get_msi_irq(struct ath11k_base *ab, unsigned int vector)
+{
+	struct pci_dev *pci_dev = to_pci_dev(ab->dev);
+
+	return pci_irq_vector(pci_dev, vector);
+}
+
+static const struct ath11k_pci_ops ath11k_pci_ops_qca6390 = {
+	.wakeup = ath11k_pci_bus_wake_up,
+	.release = ath11k_pci_bus_release,
+	.get_msi_irq = ath11k_pci_get_msi_irq,
+	.window_write32 = ath11k_pci_window_write32,
+	.window_read32 = ath11k_pci_window_read32,
+};
+
+static const struct ath11k_pci_ops ath11k_pci_ops_qcn9074 = {
+	.wakeup = NULL,
+	.release = NULL,
+	.get_msi_irq = ath11k_pci_get_msi_irq,
+	.window_write32 = ath11k_pci_window_write32,
+	.window_read32 = ath11k_pci_window_read32,
+};
+
+static const struct ath11k_msi_config msi_config_one_msi = {
+	.total_vectors = 1,
+	.total_users = 4,
+	.users = (struct ath11k_msi_user[]) {
+		{ .name = "MHI", .num_vectors = 3, .base_vector = 0 },
+		{ .name = "CE", .num_vectors = 1, .base_vector = 0 },
+		{ .name = "WAKE", .num_vectors = 1, .base_vector = 0 },
+		{ .name = "DP", .num_vectors = 1, .base_vector = 0 },
+	},
+};
+
+static inline void ath11k_pci_select_static_window(struct ath11k_pci *ab_pci)
+{
+	u32 umac_window;
+	u32 ce_window;
+	u32 window;
+
+	umac_window = FIELD_GET(ATH11K_PCI_WINDOW_VALUE_MASK, HAL_SEQ_WCSS_UMAC_OFFSET);
+	ce_window = FIELD_GET(ATH11K_PCI_WINDOW_VALUE_MASK, HAL_CE_WFSS_CE_REG_BASE);
+	window = (umac_window << 12) | (ce_window << 6);
+
+	iowrite32(ATH11K_PCI_WINDOW_ENABLE_BIT | window,
+		  ab_pci->ab->mem + ATH11K_PCI_WINDOW_REG_ADDRESS);
+}
+
+static void ath11k_pci_soc_global_reset(struct ath11k_base *ab)
+{
+	u32 val, delay;
+
+	val = ath11k_pcic_read32(ab, PCIE_SOC_GLOBAL_RESET);
+
+	val |= PCIE_SOC_GLOBAL_RESET_V;
+
+	ath11k_pcic_write32(ab, PCIE_SOC_GLOBAL_RESET, val);
+
+	/* TODO: exact time to sleep is uncertain */
+	delay = 10;
+	mdelay(delay);
+
+	/* Need to toggle V bit back otherwise stuck in reset status */
+	val &= ~PCIE_SOC_GLOBAL_RESET_V;
+
+	ath11k_pcic_write32(ab, PCIE_SOC_GLOBAL_RESET, val);
+
+	mdelay(delay);
+
+	val = ath11k_pcic_read32(ab, PCIE_SOC_GLOBAL_RESET);
+	if (val == 0xffffffff)
+		ath11k_warn(ab, "link down error during global reset\n");
+}
+
+static void ath11k_pci_clear_dbg_registers(struct ath11k_base *ab)
+{
+	u32 val;
+
+	/* read cookie */
+	val = ath11k_pcic_read32(ab, PCIE_Q6_COOKIE_ADDR);
+	ath11k_dbg(ab, ATH11K_DBG_PCI, "pcie_q6_cookie_addr 0x%x\n", val);
+
+	val = ath11k_pcic_read32(ab, WLAON_WARM_SW_ENTRY);
+	ath11k_dbg(ab, ATH11K_DBG_PCI, "wlaon_warm_sw_entry 0x%x\n", val);
+
+	/* TODO: exact time to sleep is uncertain */
+	mdelay(10);
+
+	/* write 0 to WLAON_WARM_SW_ENTRY to prevent Q6 from
+	 * continuing warm path and entering dead loop.
+	 */
+	ath11k_pcic_write32(ab, WLAON_WARM_SW_ENTRY, 0);
+	mdelay(10);
+
+	val = ath11k_pcic_read32(ab, WLAON_WARM_SW_ENTRY);
+	ath11k_dbg(ab, ATH11K_DBG_PCI, "wlaon_warm_sw_entry 0x%x\n", val);
+
+	/* A read clear register. clear the register to prevent
+	 * Q6 from entering wrong code path.
+	 */
+	val = ath11k_pcic_read32(ab, WLAON_SOC_RESET_CAUSE_REG);
+	ath11k_dbg(ab, ATH11K_DBG_PCI, "soc reset cause %d\n", val);
+}
+
+static int ath11k_pci_set_link_reg(struct ath11k_base *ab,
+				   u32 offset, u32 value, u32 mask)
+{
+	u32 v;
+	int i;
+
+	v = ath11k_pcic_read32(ab, offset);
+	if ((v & mask) == value)
+		return 0;
+
+	for (i = 0; i < 10; i++) {
+		ath11k_pcic_write32(ab, offset, (v & ~mask) | value);
+
+		v = ath11k_pcic_read32(ab, offset);
+		if ((v & mask) == value)
+			return 0;
+
+		mdelay(2);
+	}
+
+	ath11k_warn(ab, "failed to set pcie link register 0x%08x: 0x%08x != 0x%08x\n",
+		    offset, v & mask, value);
+
+	return -ETIMEDOUT;
+}
+
+static int ath11k_pci_fix_l1ss(struct ath11k_base *ab)
+{
+	int ret;
+
+	ret = ath11k_pci_set_link_reg(ab,
+				      PCIE_QSERDES_COM_SYSCLK_EN_SEL_REG(ab),
+				      PCIE_QSERDES_COM_SYSCLK_EN_SEL_VAL,
+				      PCIE_QSERDES_COM_SYSCLK_EN_SEL_MSK);
+	if (ret) {
+		ath11k_warn(ab, "failed to set sysclk: %d\n", ret);
+		return ret;
+	}
+
+	ret = ath11k_pci_set_link_reg(ab,
+				      PCIE_PCS_OSC_DTCT_CONFIG1_REG(ab),
+				      PCIE_PCS_OSC_DTCT_CONFIG1_VAL,
+				      PCIE_PCS_OSC_DTCT_CONFIG_MSK);
+	if (ret) {
+		ath11k_warn(ab, "failed to set dtct config1 error: %d\n", ret);
+		return ret;
+	}
+
+	ret = ath11k_pci_set_link_reg(ab,
+				      PCIE_PCS_OSC_DTCT_CONFIG2_REG(ab),
+				      PCIE_PCS_OSC_DTCT_CONFIG2_VAL,
+				      PCIE_PCS_OSC_DTCT_CONFIG_MSK);
+	if (ret) {
+		ath11k_warn(ab, "failed to set dtct config2: %d\n", ret);
+		return ret;
+	}
+
+	ret = ath11k_pci_set_link_reg(ab,
+				      PCIE_PCS_OSC_DTCT_CONFIG4_REG(ab),
+				      PCIE_PCS_OSC_DTCT_CONFIG4_VAL,
+				      PCIE_PCS_OSC_DTCT_CONFIG_MSK);
+	if (ret) {
+		ath11k_warn(ab, "failed to set dtct config4: %d\n", ret);
+		return ret;
+	}
+
+	return 0;
+}
+
+static void ath11k_pci_enable_ltssm(struct ath11k_base *ab)
+{
+	u32 val;
+	int i;
+
+	val = ath11k_pcic_read32(ab, PCIE_PCIE_PARF_LTSSM);
+
+	/* PCIE link seems very unstable after the Hot Reset*/
+	for (i = 0; val != PARM_LTSSM_VALUE && i < 5; i++) {
+		if (val == 0xffffffff)
+			mdelay(5);
+
+		ath11k_pcic_write32(ab, PCIE_PCIE_PARF_LTSSM, PARM_LTSSM_VALUE);
+		val = ath11k_pcic_read32(ab, PCIE_PCIE_PARF_LTSSM);
+	}
+
+	ath11k_dbg(ab, ATH11K_DBG_PCI, "ltssm 0x%x\n", val);
+
+	val = ath11k_pcic_read32(ab, GCC_GCC_PCIE_HOT_RST);
+	val |= GCC_GCC_PCIE_HOT_RST_VAL;
+	ath11k_pcic_write32(ab, GCC_GCC_PCIE_HOT_RST, val);
+	val = ath11k_pcic_read32(ab, GCC_GCC_PCIE_HOT_RST);
+
+	ath11k_dbg(ab, ATH11K_DBG_PCI, "pcie_hot_rst 0x%x\n", val);
+
+	mdelay(5);
+}
+
+static void ath11k_pci_clear_all_intrs(struct ath11k_base *ab)
+{
+	/* This is a WAR for PCIE Hotreset.
+	 * When target receive Hotreset, but will set the interrupt.
+	 * So when download SBL again, SBL will open Interrupt and
+	 * receive it, and crash immediately.
+	 */
+	ath11k_pcic_write32(ab, PCIE_PCIE_INT_ALL_CLEAR, PCIE_INT_CLEAR_ALL);
+}
+
+static void ath11k_pci_set_wlaon_pwr_ctrl(struct ath11k_base *ab)
+{
+	u32 val;
+
+	val = ath11k_pcic_read32(ab, WLAON_QFPROM_PWR_CTRL_REG);
+	val &= ~QFPROM_PWR_CTRL_VDD4BLOW_MASK;
+	ath11k_pcic_write32(ab, WLAON_QFPROM_PWR_CTRL_REG, val);
+}
+
+static void ath11k_pci_force_wake(struct ath11k_base *ab)
+{
+	ath11k_pcic_write32(ab, PCIE_SOC_WAKE_PCIE_LOCAL_REG, 1);
+	mdelay(5);
+}
+
+static void ath11k_pci_sw_reset(struct ath11k_base *ab, bool power_on)
+{
+	mdelay(100);
+
+	if (power_on) {
+		ath11k_pci_enable_ltssm(ab);
+		ath11k_pci_clear_all_intrs(ab);
+		ath11k_pci_set_wlaon_pwr_ctrl(ab);
+		if (ab->hw_params.fix_l1ss)
+			ath11k_pci_fix_l1ss(ab);
+	}
+
+	ath11k_mhi_clear_vector(ab);
+	ath11k_pci_clear_dbg_registers(ab);
+	ath11k_pci_soc_global_reset(ab);
+	ath11k_mhi_set_mhictrl_reset(ab);
+}
+
+static void ath11k_pci_init_qmi_ce_config(struct ath11k_base *ab)
+{
+	struct ath11k_qmi_ce_cfg *cfg = &ab->qmi.ce_cfg;
+
+	cfg->tgt_ce = ab->hw_params.target_ce_config;
+	cfg->tgt_ce_len = ab->hw_params.target_ce_count;
+
+	cfg->svc_to_ce_map = ab->hw_params.svc_to_ce_map;
+	cfg->svc_to_ce_map_len = ab->hw_params.svc_to_ce_map_len;
+	ab->qmi.service_ins_id = ab->hw_params.qmi_service_ins_id;
+
+	ath11k_ce_get_shadow_config(ab, &cfg->shadow_reg_v2,
+				    &cfg->shadow_reg_v2_len);
+}
+
+static void ath11k_pci_msi_config(struct ath11k_pci *ab_pci, bool enable)
+{
+	struct pci_dev *dev = ab_pci->pdev;
+	u16 control;
+
+	pci_read_config_word(dev, dev->msi_cap + PCI_MSI_FLAGS, &control);
+
+	if (enable)
+		control |= PCI_MSI_FLAGS_ENABLE;
+	else
+		control &= ~PCI_MSI_FLAGS_ENABLE;
+
+	pci_write_config_word(dev, dev->msi_cap + PCI_MSI_FLAGS, control);
+}
+
+static void ath11k_pci_msi_enable(struct ath11k_pci *ab_pci)
+{
+	ath11k_pci_msi_config(ab_pci, true);
+}
+
+static void ath11k_pci_msi_disable(struct ath11k_pci *ab_pci)
+{
+	ath11k_pci_msi_config(ab_pci, false);
+}
+
+static int ath11k_pci_alloc_msi(struct ath11k_pci *ab_pci)
+{
+	struct ath11k_base *ab = ab_pci->ab;
+	const struct ath11k_msi_config *msi_config = ab->pci.msi.config;
+	struct pci_dev *pci_dev = ab_pci->pdev;
+	struct msi_desc *msi_desc;
+	int num_vectors;
+	int ret;
+
+	num_vectors = pci_alloc_irq_vectors(pci_dev,
+					    msi_config->total_vectors,
+					    msi_config->total_vectors,
+					    PCI_IRQ_MSI);
+	if (num_vectors == msi_config->total_vectors) {
+		set_bit(ATH11K_FLAG_MULTI_MSI_VECTORS, &ab->dev_flags);
+	} else {
+		num_vectors = pci_alloc_irq_vectors(ab_pci->pdev,
+						    1,
+						    1,
+						    PCI_IRQ_MSI);
+		if (num_vectors < 0) {
+			ret = -EINVAL;
+			goto reset_msi_config;
+		}
+		clear_bit(ATH11K_FLAG_MULTI_MSI_VECTORS, &ab->dev_flags);
+		ab->pci.msi.config = &msi_config_one_msi;
+		ath11k_dbg(ab, ATH11K_DBG_PCI, "request one msi vector\n");
+	}
+	ath11k_info(ab, "MSI vectors: %d\n", num_vectors);
+
+	ath11k_pci_msi_disable(ab_pci);
+
+	msi_desc = irq_get_msi_desc(ab_pci->pdev->irq);
+	if (!msi_desc) {
+		ath11k_err(ab, "msi_desc is NULL!\n");
+		ret = -EINVAL;
+		goto free_msi_vector;
+	}
+
+	ab->pci.msi.ep_base_data = msi_desc->msg.data;
+
+	pci_read_config_dword(pci_dev, pci_dev->msi_cap + PCI_MSI_ADDRESS_LO,
+			      &ab->pci.msi.addr_lo);
+
+	if (msi_desc->pci.msi_attrib.is_64) {
+		pci_read_config_dword(pci_dev, pci_dev->msi_cap + PCI_MSI_ADDRESS_HI,
+				      &ab->pci.msi.addr_hi);
+	} else {
+		ab->pci.msi.addr_hi = 0;
+	}
+
+	ath11k_dbg(ab, ATH11K_DBG_PCI, "msi base data is %d\n", ab->pci.msi.ep_base_data);
+
+	return 0;
+
+free_msi_vector:
+	pci_free_irq_vectors(ab_pci->pdev);
+
+reset_msi_config:
+	return ret;
+}
+
+static void ath11k_pci_free_msi(struct ath11k_pci *ab_pci)
+{
+	pci_free_irq_vectors(ab_pci->pdev);
+}
+
+static int ath11k_pci_config_msi_data(struct ath11k_pci *ab_pci)
+{
+	struct msi_desc *msi_desc;
+
+	msi_desc = irq_get_msi_desc(ab_pci->pdev->irq);
+	if (!msi_desc) {
+		ath11k_err(ab_pci->ab, "msi_desc is NULL!\n");
+		pci_free_irq_vectors(ab_pci->pdev);
+		return -EINVAL;
+	}
+
+	ab_pci->ab->pci.msi.ep_base_data = msi_desc->msg.data;
+
+	ath11k_dbg(ab_pci->ab, ATH11K_DBG_PCI, "after request_irq msi_ep_base_data %d\n",
+		   ab_pci->ab->pci.msi.ep_base_data);
+
+	return 0;
+}
+
+static int ath11k_pci_claim(struct ath11k_pci *ab_pci, struct pci_dev *pdev)
+{
+	struct ath11k_base *ab = ab_pci->ab;
+	u16 device_id;
+	int ret = 0;
+
+	pci_read_config_word(pdev, PCI_DEVICE_ID, &device_id);
+	if (device_id != ab_pci->dev_id)  {
+		ath11k_err(ab, "pci device id mismatch: 0x%x 0x%x\n",
+			   device_id, ab_pci->dev_id);
+		ret = -EIO;
+		goto out;
+	}
+
+	ret = pci_assign_resource(pdev, ATH11K_PCI_BAR_NUM);
+	if (ret) {
+		ath11k_err(ab, "failed to assign pci resource: %d\n", ret);
+		goto out;
+	}
+
+	ret = pci_enable_device(pdev);
+	if (ret) {
+		ath11k_err(ab, "failed to enable pci device: %d\n", ret);
+		goto out;
+	}
+
+	ret = pci_request_region(pdev, ATH11K_PCI_BAR_NUM, "ath11k_pci");
+	if (ret) {
+		ath11k_err(ab, "failed to request pci region: %d\n", ret);
+		goto disable_device;
+	}
+
+	ret = dma_set_mask_and_coherent(&pdev->dev,
+					DMA_BIT_MASK(ATH11K_PCI_DMA_MASK));
+	if (ret) {
+		ath11k_err(ab, "failed to set pci dma mask to %d: %d\n",
+			   ATH11K_PCI_DMA_MASK, ret);
+		goto release_region;
+	}
+
+	pci_set_master(pdev);
+
+	ab->mem_len = pci_resource_len(pdev, ATH11K_PCI_BAR_NUM);
+	ab->mem = pci_iomap(pdev, ATH11K_PCI_BAR_NUM, 0);
+	if (!ab->mem) {
+		ath11k_err(ab, "failed to map pci bar %d\n", ATH11K_PCI_BAR_NUM);
+		ret = -EIO;
+		goto release_region;
+	}
+
+	ab->mem_ce = ab->mem;
+
+	ath11k_dbg(ab, ATH11K_DBG_BOOT, "pci_mem 0x%p\n", ab->mem);
+	return 0;
+
+release_region:
+	pci_release_region(pdev, ATH11K_PCI_BAR_NUM);
+disable_device:
+	pci_disable_device(pdev);
+out:
+	return ret;
+}
+
+static void ath11k_pci_free_region(struct ath11k_pci *ab_pci)
+{
+	struct ath11k_base *ab = ab_pci->ab;
+	struct pci_dev *pci_dev = ab_pci->pdev;
+
+	pci_iounmap(pci_dev, ab->mem);
+	ab->mem = NULL;
+	pci_release_region(pci_dev, ATH11K_PCI_BAR_NUM);
+	if (pci_is_enabled(pci_dev))
+		pci_disable_device(pci_dev);
+}
+
+static void ath11k_pci_aspm_disable(struct ath11k_pci *ab_pci)
+{
+	struct ath11k_base *ab = ab_pci->ab;
+
+	pcie_capability_read_word(ab_pci->pdev, PCI_EXP_LNKCTL,
+				  &ab_pci->link_ctl);
+
+	ath11k_dbg(ab, ATH11K_DBG_PCI, "link_ctl 0x%04x L0s %d L1 %d\n",
+		   ab_pci->link_ctl,
+		   u16_get_bits(ab_pci->link_ctl, PCI_EXP_LNKCTL_ASPM_L0S),
+		   u16_get_bits(ab_pci->link_ctl, PCI_EXP_LNKCTL_ASPM_L1));
+
+	/* disable L0s and L1 */
+	pcie_capability_clear_word(ab_pci->pdev, PCI_EXP_LNKCTL,
+				   PCI_EXP_LNKCTL_ASPMC);
+
+	set_bit(ATH11K_PCI_ASPM_RESTORE, &ab_pci->flags);
+}
+
+static void ath11k_pci_aspm_restore(struct ath11k_pci *ab_pci)
+{
+	if (test_and_clear_bit(ATH11K_PCI_ASPM_RESTORE, &ab_pci->flags))
+		pcie_capability_clear_and_set_word(ab_pci->pdev, PCI_EXP_LNKCTL,
+						   PCI_EXP_LNKCTL_ASPMC,
+						   ab_pci->link_ctl &
+						   PCI_EXP_LNKCTL_ASPMC);
+}
+
+static int ath11k_pci_power_up(struct ath11k_base *ab)
+{
+	struct ath11k_pci *ab_pci = ath11k_pci_priv(ab);
+	int ret;
+
+	ab_pci->register_window = 0;
+	clear_bit(ATH11K_FLAG_DEVICE_INIT_DONE, &ab->dev_flags);
+	ath11k_pci_sw_reset(ab_pci->ab, true);
+
+	/* Disable ASPM during firmware download due to problems switching
+	 * to AMSS state.
+	 */
+	ath11k_pci_aspm_disable(ab_pci);
+
+	ath11k_pci_msi_enable(ab_pci);
+
+	ret = ath11k_mhi_start(ab_pci);
+	if (ret) {
+		ath11k_err(ab, "failed to start mhi: %d\n", ret);
+		return ret;
+	}
+
+	if (ab->hw_params.static_window_map)
+		ath11k_pci_select_static_window(ab_pci);
+
+	return 0;
+}
+
+static void ath11k_pci_power_down(struct ath11k_base *ab)
+{
+	struct ath11k_pci *ab_pci = ath11k_pci_priv(ab);
+
+	/* restore aspm in case firmware bootup fails */
+	ath11k_pci_aspm_restore(ab_pci);
+
+	ath11k_pci_force_wake(ab_pci->ab);
+
+	ath11k_pci_msi_disable(ab_pci);
+
+	ath11k_mhi_stop(ab_pci);
+	clear_bit(ATH11K_FLAG_DEVICE_INIT_DONE, &ab->dev_flags);
+	ath11k_pci_sw_reset(ab_pci->ab, false);
+}
+
+static int ath11k_pci_hif_suspend(struct ath11k_base *ab)
+{
+	struct ath11k_pci *ar_pci = ath11k_pci_priv(ab);
+
+	return ath11k_mhi_suspend(ar_pci);
+}
+
+static int ath11k_pci_hif_resume(struct ath11k_base *ab)
+{
+	struct ath11k_pci *ar_pci = ath11k_pci_priv(ab);
+
+	return ath11k_mhi_resume(ar_pci);
+}
+
+static void ath11k_pci_hif_ce_irq_enable(struct ath11k_base *ab)
+{
+	ath11k_pcic_ce_irqs_enable(ab);
+}
+
+static void ath11k_pci_hif_ce_irq_disable(struct ath11k_base *ab)
+{
+	ath11k_pcic_ce_irq_disable_sync(ab);
+}
+
+static int ath11k_pci_start(struct ath11k_base *ab)
+{
+	struct ath11k_pci *ab_pci = ath11k_pci_priv(ab);
+
+	/* TODO: for now don't restore ASPM in case of single MSI
+	 * vector as MHI register reading in M2 causes system hang.
+	 */
+	if (test_bit(ATH11K_FLAG_MULTI_MSI_VECTORS, &ab->dev_flags))
+		ath11k_pci_aspm_restore(ab_pci);
+	else
+		ath11k_info(ab, "leaving PCI ASPM disabled to avoid MHI M2 problems\n");
+
+	ath11k_pcic_start(ab);
+
+	return 0;
+}
+
+static const struct ath11k_hif_ops ath11k_pci_hif_ops = {
+	.start = ath11k_pci_start,
+	.stop = ath11k_pcic_stop,
+	.read32 = ath11k_pcic_read32,
+	.write32 = ath11k_pcic_write32,
+	.read = ath11k_pcic_read,
+	.power_down = ath11k_pci_power_down,
+	.power_up = ath11k_pci_power_up,
+	.suspend = ath11k_pci_hif_suspend,
+	.resume = ath11k_pci_hif_resume,
+	.irq_enable = ath11k_pcic_ext_irq_enable,
+	.irq_disable = ath11k_pcic_ext_irq_disable,
+	.get_msi_address =  ath11k_pcic_get_msi_address,
+	.get_user_msi_vector = ath11k_pcic_get_user_msi_assignment,
+	.map_service_to_pipe = ath11k_pcic_map_service_to_pipe,
+	.ce_irq_enable = ath11k_pci_hif_ce_irq_enable,
+	.ce_irq_disable = ath11k_pci_hif_ce_irq_disable,
+	.get_ce_msi_idx = ath11k_pcic_get_ce_msi_idx,
+};
+
+static void ath11k_pci_read_hw_version(struct ath11k_base *ab, u32 *major, u32 *minor)
+{
+	u32 soc_hw_version;
+
+	soc_hw_version = ath11k_pcic_read32(ab, TCSR_SOC_HW_VERSION);
+	*major = FIELD_GET(TCSR_SOC_HW_VERSION_MAJOR_MASK,
+			   soc_hw_version);
+	*minor = FIELD_GET(TCSR_SOC_HW_VERSION_MINOR_MASK,
+			   soc_hw_version);
+
+	ath11k_dbg(ab, ATH11K_DBG_PCI, "tcsr_soc_hw_version major %d minor %d\n",
+		   *major, *minor);
+}
+
+static int ath11k_pci_set_irq_affinity_hint(struct ath11k_pci *ab_pci,
+					    const struct cpumask *m)
+{
+	if (test_bit(ATH11K_FLAG_MULTI_MSI_VECTORS, &ab_pci->ab->dev_flags))
+		return 0;
+
+	return irq_set_affinity_hint(ab_pci->pdev->irq, m);
+}
+
+static int ath11k_pci_probe(struct pci_dev *pdev,
+			    const struct pci_device_id *pci_dev)
+{
+	struct ath11k_base *ab;
+	struct ath11k_pci *ab_pci;
+	u32 soc_hw_version_major, soc_hw_version_minor, addr;
+	const struct ath11k_pci_ops *pci_ops;
+	int ret;
+
+	ab = ath11k_core_alloc(&pdev->dev, sizeof(*ab_pci), ATH11K_BUS_PCI);
+
+	if (!ab) {
+		dev_err(&pdev->dev, "failed to allocate ath11k base\n");
+		return -ENOMEM;
+	}
+
+	ab->dev = &pdev->dev;
+	pci_set_drvdata(pdev, ab);
+	ab_pci = ath11k_pci_priv(ab);
+	ab_pci->dev_id = pci_dev->device;
+	ab_pci->ab = ab;
+	ab_pci->pdev = pdev;
+	ab->hif.ops = &ath11k_pci_hif_ops;
+	ab->fw_mode = ATH11K_FIRMWARE_MODE_NORMAL;
+	pci_set_drvdata(pdev, ab);
+	spin_lock_init(&ab_pci->window_lock);
+
+	/* Set fixed_mem_region to true for platforms support reserved memory
+	 * from DT. If memory is reserved from DT for FW, ath11k driver need not
+	 * allocate memory.
+	 */
+	ret = of_property_read_u32(ab->dev->of_node, "memory-region", &addr);
+	if (!ret)
+		set_bit(ATH11K_FLAG_FIXED_MEM_RGN, &ab->dev_flags);
+
+	ret = ath11k_pci_claim(ab_pci, pdev);
+	if (ret) {
+		ath11k_err(ab, "failed to claim device: %d\n", ret);
+		goto err_free_core;
+	}
+
+	ath11k_dbg(ab, ATH11K_DBG_BOOT, "pci probe %04x:%04x %04x:%04x\n",
+		   pdev->vendor, pdev->device,
+		   pdev->subsystem_vendor, pdev->subsystem_device);
+
+	ab->id.vendor = pdev->vendor;
+	ab->id.device = pdev->device;
+	ab->id.subsystem_vendor = pdev->subsystem_vendor;
+	ab->id.subsystem_device = pdev->subsystem_device;
+
+	switch (pci_dev->device) {
+	case QCA6390_DEVICE_ID:
+		ath11k_pci_read_hw_version(ab, &soc_hw_version_major,
+					   &soc_hw_version_minor);
+		switch (soc_hw_version_major) {
+		case 2:
+			ab->hw_rev = ATH11K_HW_QCA6390_HW20;
+			break;
+		default:
+			dev_err(&pdev->dev, "Unsupported QCA6390 SOC hardware version: %d %d\n",
+				soc_hw_version_major, soc_hw_version_minor);
+			ret = -EOPNOTSUPP;
+			goto err_pci_free_region;
+		}
+
+		pci_ops = &ath11k_pci_ops_qca6390;
+		break;
+	case QCN9074_DEVICE_ID:
+		pci_ops = &ath11k_pci_ops_qcn9074;
+		ab->hw_rev = ATH11K_HW_QCN9074_HW10;
+		break;
+	case WCN6855_DEVICE_ID:
+		ab->id.bdf_search = ATH11K_BDF_SEARCH_BUS_AND_BOARD;
+		ath11k_pci_read_hw_version(ab, &soc_hw_version_major,
+					   &soc_hw_version_minor);
+		switch (soc_hw_version_major) {
+		case 2:
+			switch (soc_hw_version_minor) {
+			case 0x00:
+			case 0x01:
+				ab->hw_rev = ATH11K_HW_WCN6855_HW20;
+				break;
+			case 0x10:
+			case 0x11:
+				ab->hw_rev = ATH11K_HW_WCN6855_HW21;
+				break;
+			default:
+				goto unsupported_wcn6855_soc;
+			}
+			break;
+		default:
+unsupported_wcn6855_soc:
+			dev_err(&pdev->dev, "Unsupported WCN6855 SOC hardware version: %d %d\n",
+				soc_hw_version_major, soc_hw_version_minor);
+			ret = -EOPNOTSUPP;
+			goto err_pci_free_region;
+		}
+
+		pci_ops = &ath11k_pci_ops_qca6390;
+		break;
+	default:
+		dev_err(&pdev->dev, "Unknown PCI device found: 0x%x\n",
+			pci_dev->device);
+		ret = -EOPNOTSUPP;
+		goto err_pci_free_region;
+	}
+
+	ret = ath11k_pcic_register_pci_ops(ab, pci_ops);
+	if (ret) {
+		ath11k_err(ab, "failed to register PCI ops: %d\n", ret);
+		goto err_pci_free_region;
+	}
+
+	ret = ath11k_pcic_init_msi_config(ab);
+	if (ret) {
+		ath11k_err(ab, "failed to init msi config: %d\n", ret);
+		goto err_pci_free_region;
+	}
+
+	ret = ath11k_pci_alloc_msi(ab_pci);
+	if (ret) {
+		ath11k_err(ab, "failed to enable msi: %d\n", ret);
+		goto err_pci_free_region;
+	}
+
+	ret = ath11k_core_pre_init(ab);
+	if (ret)
+		goto err_pci_disable_msi;
+
+	ret = ath11k_pci_set_irq_affinity_hint(ab_pci, cpumask_of(0));
+	if (ret) {
+		ath11k_err(ab, "failed to set irq affinity %d\n", ret);
+		goto err_pci_disable_msi;
+	}
+
+	ret = ath11k_mhi_register(ab_pci);
+	if (ret) {
+		ath11k_err(ab, "failed to register mhi: %d\n", ret);
+		goto err_irq_affinity_cleanup;
+	}
+
+	ret = ath11k_hal_srng_init(ab);
+	if (ret)
+		goto err_mhi_unregister;
+
+	ret = ath11k_ce_alloc_pipes(ab);
+	if (ret) {
+		ath11k_err(ab, "failed to allocate ce pipes: %d\n", ret);
+		goto err_hal_srng_deinit;
+	}
+
+	ath11k_pci_init_qmi_ce_config(ab);
+
+	ret = ath11k_pcic_config_irq(ab);
+	if (ret) {
+		ath11k_err(ab, "failed to config irq: %d\n", ret);
+		goto err_ce_free;
+	}
+
+	/* kernel may allocate a dummy vector before request_irq and
+	 * then allocate a real vector when request_irq is called.
+	 * So get msi_data here again to avoid spurious interrupt
+	 * as msi_data will configured to srngs.
+	 */
+	ret = ath11k_pci_config_msi_data(ab_pci);
+	if (ret) {
+		ath11k_err(ab, "failed to config msi_data: %d\n", ret);
+		goto err_free_irq;
+	}
+
+	ret = ath11k_core_init(ab);
+	if (ret) {
+		ath11k_err(ab, "failed to init core: %d\n", ret);
+		goto err_free_irq;
+	}
+	ath11k_qmi_fwreset_from_cold_boot(ab);
+	return 0;
+
+err_free_irq:
+	ath11k_pcic_free_irq(ab);
+
+err_ce_free:
+	ath11k_ce_free_pipes(ab);
+
+err_hal_srng_deinit:
+	ath11k_hal_srng_deinit(ab);
+
+err_mhi_unregister:
+	ath11k_mhi_unregister(ab_pci);
+
+err_irq_affinity_cleanup:
+	ath11k_pci_set_irq_affinity_hint(ab_pci, NULL);
+
+err_pci_disable_msi:
+	ath11k_pci_free_msi(ab_pci);
+
+err_pci_free_region:
+	ath11k_pci_free_region(ab_pci);
+
+err_free_core:
+	ath11k_core_free(ab);
+
+	return ret;
+}
+
+static void ath11k_pci_remove(struct pci_dev *pdev)
+{
+	struct ath11k_base *ab = pci_get_drvdata(pdev);
+	struct ath11k_pci *ab_pci = ath11k_pci_priv(ab);
+
+	ath11k_pci_set_irq_affinity_hint(ab_pci, NULL);
+
+	if (test_bit(ATH11K_FLAG_QMI_FAIL, &ab->dev_flags)) {
+		ath11k_pci_power_down(ab);
+		ath11k_debugfs_soc_destroy(ab);
+		ath11k_qmi_deinit_service(ab);
+		goto qmi_fail;
+	}
+
+	set_bit(ATH11K_FLAG_UNREGISTERING, &ab->dev_flags);
+
+	ath11k_core_deinit(ab);
+
+qmi_fail:
+	ath11k_mhi_unregister(ab_pci);
+
+	ath11k_pcic_free_irq(ab);
+	ath11k_pci_free_msi(ab_pci);
+	ath11k_pci_free_region(ab_pci);
+
+	ath11k_hal_srng_deinit(ab);
+	ath11k_ce_free_pipes(ab);
+	ath11k_core_free(ab);
+}
+
+static void ath11k_pci_shutdown(struct pci_dev *pdev)
+{
+	struct ath11k_base *ab = pci_get_drvdata(pdev);
+	struct ath11k_pci *ab_pci = ath11k_pci_priv(ab);
+
+	ath11k_pci_set_irq_affinity_hint(ab_pci, NULL);
+	ath11k_pci_power_down(ab);
+}
+
+static __maybe_unused int ath11k_pci_pm_suspend(struct device *dev)
+{
+	struct ath11k_base *ab = dev_get_drvdata(dev);
+	int ret;
+
+	if (test_bit(ATH11K_FLAG_QMI_FAIL, &ab->dev_flags)) {
+		ath11k_dbg(ab, ATH11K_DBG_BOOT, "boot skipping pci suspend as qmi is not initialised\n");
+		return 0;
+	}
+
+	ret = ath11k_core_suspend(ab);
+	if (ret)
+		ath11k_warn(ab, "failed to suspend core: %d\n", ret);
+
+	return 0;
+}
+
+static __maybe_unused int ath11k_pci_pm_resume(struct device *dev)
+{
+	struct ath11k_base *ab = dev_get_drvdata(dev);
+	int ret;
+
+	if (test_bit(ATH11K_FLAG_QMI_FAIL, &ab->dev_flags)) {
+		ath11k_dbg(ab, ATH11K_DBG_BOOT, "boot skipping pci resume as qmi is not initialised\n");
+		return 0;
+	}
+
+	ret = ath11k_core_resume(ab);
+	if (ret)
+		ath11k_warn(ab, "failed to resume core: %d\n", ret);
+
+	return ret;
+}
+
+static SIMPLE_DEV_PM_OPS(ath11k_pci_pm_ops,
+			 ath11k_pci_pm_suspend,
+			 ath11k_pci_pm_resume);
+
+static struct pci_driver ath11k_pci_driver = {
+	.name = "ath11k_pci",
+	.id_table = ath11k_pci_id_table,
+	.probe = ath11k_pci_probe,
+	.remove = ath11k_pci_remove,
+	.shutdown = ath11k_pci_shutdown,
+#ifdef CONFIG_PM
+	.driver.pm = &ath11k_pci_pm_ops,
+#endif
+};
+
+static int ath11k_pci_init(void)
+{
+	int ret;
+
+	ret = pci_register_driver(&ath11k_pci_driver);
+	if (ret)
+		pr_err("failed to register ath11k pci driver: %d\n",
+		       ret);
+
+	return ret;
+}
+module_init(ath11k_pci_init);
+
+static void ath11k_pci_exit(void)
+{
+	pci_unregister_driver(&ath11k_pci_driver);
+}
+
+module_exit(ath11k_pci_exit);
+
+MODULE_DESCRIPTION("Driver support for Qualcomm Technologies PCIe 802.11ax WLAN devices");
+MODULE_LICENSE("Dual BSD/GPL");
+
+/* firmware files */
+MODULE_FIRMWARE(ATH11K_FW_DIR "/QCA6390/hw2.0/*");
+MODULE_FIRMWARE(ATH11K_FW_DIR "/QCN9074/hw1.0/*");
+MODULE_FIRMWARE(ATH11K_FW_DIR "/WCN6855/hw2.0/*");
+MODULE_FIRMWARE(ATH11K_FW_DIR "/WCN6855/hw2.1/*");