[PATCH v5 08/13] wifi: ath12k: add AHB driver support for IPQ5332

Raj Kumar Bhagat
2025-01-30T04:36:22Z

From: Balamurugan S <quic_bselvara@quicinc.com>

Add Initial Ath12k AHB driver support for IPQ5332. IPQ5332 is AHB
based IEEE802.11be 2 GHz 2x2 WiFi device.

Tested-on: IPQ5332 hw1.0 AHB WLAN.WBE.1.3.1-00130-QCAHKSWPL_SILICONZ-1
Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.1.1-00210-QCAHKSWPL_SILICONZ-1

Signed-off-by: Balamurugan S <quic_bselvara@quicinc.com>
Co-developed-by: P Praneesh <quic_ppranees@quicinc.com>
Signed-off-by: P Praneesh <quic_ppranees@quicinc.com>
Co-developed-by: Raj Kumar Bhagat <quic_rajkbhag@quicinc.com>
Signed-off-by: Raj Kumar Bhagat <quic_rajkbhag@quicinc.com>
---
drivers/net/wireless/ath/ath12k/ahb.c | 867 +++++++++++++++++++++++++
drivers/net/wireless/ath/ath12k/ahb.h | 37 ++
drivers/net/wireless/ath/ath12k/core.h | 4 +
drivers/net/wireless/ath/ath12k/hal.h | 1 +
drivers/net/wireless/ath/ath12k/hw.h | 1 +
5 files changed, 910 insertions(+)
create mode 100644 drivers/net/wireless/ath/ath12k/ahb.c
create mode 100644 drivers/net/wireless/ath/ath12k/ahb.h

diff --git a/drivers/net/wireless/ath/ath12k/ahb.c b/drivers/net/wireless/ath/ath12k/ahb.c
new file mode 100644
index 000000000000..f4c15e0451bd
--- /dev/null
+++ b/drivers/net/wireless/ath/ath12k/ahb.c
@@ -0,0 +1,867 @@
+// SPDX-License-Identifier: BSD-3-Clause-Clear
+/*
+ * Copyright (c) 2018-2019 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2022-2025 Qualcomm Innovation Center, Inc. All rights reserved.
+ */
+
+#include <linux/dma-mapping.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include "ahb.h"
+#include "debug.h"
+#include "hif.h"
+
+static const struct of_device_id ath12k_ahb_of_match[] = {
+ { .compatible = "qcom,ipq5332-wifi",
+ .data = (void *)ATH12K_HW_IPQ5332_HW10,
+ },
+ { }
+};
+
+MODULE_DEVICE_TABLE(of, ath12k_ahb_of_match);
+
+#define ATH12K_IRQ_CE0_OFFSET 4
+
+static const char *irq_name[ATH12K_IRQ_NUM_MAX] = {
+ "misc-pulse1",
+ "misc-latch",
+ "sw-exception",
+ "watchdog",
+ "ce0",
+ "ce1",
+ "ce2",
+ "ce3",
+ "ce4",
+ "ce5",
+ "ce6",
+ "ce7",
+ "ce8",
+ "ce9",
+ "ce10",
+ "ce11",
+ "host2wbm-desc-feed",
+ "host2reo-re-injection",
+ "host2reo-command",
+ "host2rxdma-monitor-ring3",
+ "host2rxdma-monitor-ring2",
+ "host2rxdma-monitor-ring1",
+ "reo2ost-exception",
+ "wbm2host-rx-release",
+ "reo2host-status",
+ "reo2host-destination-ring4",
+ "reo2host-destination-ring3",
+ "reo2host-destination-ring2",
+ "reo2host-destination-ring1",
+ "rxdma2host-monitor-destination-mac3",
+ "rxdma2host-monitor-destination-mac2",
+ "rxdma2host-monitor-destination-mac1",
+ "ppdu-end-interrupts-mac3",
+ "ppdu-end-interrupts-mac2",
+ "ppdu-end-interrupts-mac1",
+ "rxdma2host-monitor-status-ring-mac3",
+ "rxdma2host-monitor-status-ring-mac2",
+ "rxdma2host-monitor-status-ring-mac1",
+ "host2rxdma-host-buf-ring-mac3",
+ "host2rxdma-host-buf-ring-mac2",
+ "host2rxdma-host-buf-ring-mac1",
+ "rxdma2host-destination-ring-mac3",
+ "rxdma2host-destination-ring-mac2",
+ "rxdma2host-destination-ring-mac1",
+ "host2tcl-input-ring4",
+ "host2tcl-input-ring3",
+ "host2tcl-input-ring2",
+ "host2tcl-input-ring1",
+ "wbm2host-tx-completions-ring4",
+ "wbm2host-tx-completions-ring3",
+ "wbm2host-tx-completions-ring2",
+ "wbm2host-tx-completions-ring1",
+ "tcl2host-status-ring",
+};
+
+enum ext_irq_num {
+ host2wbm_desc_feed = 16,
+ host2reo_re_injection,
+ host2reo_command,
+ host2rxdma_monitor_ring3,
+ host2rxdma_monitor_ring2,
+ host2rxdma_monitor_ring1,
+ reo2host_exception,
+ wbm2host_rx_release,
+ reo2host_status,
+ reo2host_destination_ring4,
+ reo2host_destination_ring3,
+ reo2host_destination_ring2,
+ reo2host_destination_ring1,
+ rxdma2host_monitor_destination_mac3,
+ rxdma2host_monitor_destination_mac2,
+ rxdma2host_monitor_destination_mac1,
+ ppdu_end_interrupts_mac3,
+ ppdu_end_interrupts_mac2,
+ ppdu_end_interrupts_mac1,
+ rxdma2host_monitor_status_ring_mac3,
+ rxdma2host_monitor_status_ring_mac2,
+ rxdma2host_monitor_status_ring_mac1,
+ host2rxdma_host_buf_ring_mac3,
+ host2rxdma_host_buf_ring_mac2,
+ host2rxdma_host_buf_ring_mac1,
+ rxdma2host_destination_ring_mac3,
+ rxdma2host_destination_ring_mac2,
+ rxdma2host_destination_ring_mac1,
+ host2tcl_input_ring4,
+ host2tcl_input_ring3,
+ host2tcl_input_ring2,
+ host2tcl_input_ring1,
+ wbm2host_tx_completions_ring4,
+ wbm2host_tx_completions_ring3,
+ wbm2host_tx_completions_ring2,
+ wbm2host_tx_completions_ring1,
+ tcl2host_status_ring,
+};
+
+static u32 ath12k_ahb_read32(struct ath12k_base *ab, u32 offset)
+{
+ if (ab->ce_remap && offset < HAL_SEQ_WCSS_CMEM_OFFSET)
+ return ioread32(ab->mem_ce + offset);
+ return ioread32(ab->mem + offset);
+}
+
+static void ath12k_ahb_write32(struct ath12k_base *ab, u32 offset,
+ u32 value)
+{
+ if (ab->ce_remap && offset < HAL_SEQ_WCSS_CMEM_OFFSET)
+ iowrite32(value, ab->mem_ce + offset);
+ else
+ iowrite32(value, ab->mem + offset);
+}
+
+static void ath12k_ahb_cancel_workqueue(struct ath12k_base *ab)
+{
+ int i;
+
+ for (i = 0; i < ab->hw_params->ce_count; i++) {
+ struct ath12k_ce_pipe *ce_pipe = &ab->ce.ce_pipe[i];
+
+ if (ath12k_ce_get_attr_flags(ab, i) & CE_ATTR_DIS_INTR)
+ continue;
+
+ cancel_work_sync(&ce_pipe->intr_wq);
+ }
+}
+
+static void ath12k_ahb_ext_grp_disable(struct ath12k_ext_irq_grp *irq_grp)
+{
+ int i;
+
+ for (i = 0; i < irq_grp->num_irq; i++)
+ disable_irq_nosync(irq_grp->ab->irq_num[irq_grp->irqs[i]]);
+}
+
+static void __ath12k_ahb_ext_irq_disable(struct ath12k_base *ab)
+{
+ int i;
+
+ for (i = 0; i < ATH12K_EXT_IRQ_GRP_NUM_MAX; i++) {
+ struct ath12k_ext_irq_grp *irq_grp = &ab->ext_irq_grp[i];
+
+ ath12k_ahb_ext_grp_disable(irq_grp);
+ if (irq_grp->napi_enabled) {
+ napi_synchronize(&irq_grp->napi);
+ napi_disable(&irq_grp->napi);
+ irq_grp->napi_enabled = false;
+ }
+ }
+}
+
+static void ath12k_ahb_ext_grp_enable(struct ath12k_ext_irq_grp *irq_grp)
+{
+ int i;
+
+ for (i = 0; i < irq_grp->num_irq; i++)
+ enable_irq(irq_grp->ab->irq_num[irq_grp->irqs[i]]);
+}
+
+static void ath12k_ahb_setbit32(struct ath12k_base *ab, u8 bit, u32 offset)
+{
+ u32 val;
+
+ val = ath12k_ahb_read32(ab, offset);
+ ath12k_ahb_write32(ab, offset, val | BIT(bit));
+}
+
+static void ath12k_ahb_clearbit32(struct ath12k_base *ab, u8 bit, u32 offset)
+{
+ u32 val;
+
+ val = ath12k_ahb_read32(ab, offset);
+ ath12k_ahb_write32(ab, offset, val & ~BIT(bit));
+}
+
+static void ath12k_ahb_ce_irq_enable(struct ath12k_base *ab, u16 ce_id)
+{
+ const struct ce_attr *ce_attr;
+ const struct ce_ie_addr *ce_ie_addr = ab->hw_params->ce_ie_addr;
+ u32 ie1_reg_addr, ie2_reg_addr, ie3_reg_addr;
+
+ ie1_reg_addr = ce_ie_addr->ie1_reg_addr;
+ ie2_reg_addr = ce_ie_addr->ie2_reg_addr;
+ ie3_reg_addr = ce_ie_addr->ie3_reg_addr;
+
+ ce_attr = &ab->hw_params->host_ce_config[ce_id];
+ if (ce_attr->src_nentries)
+ ath12k_ahb_setbit32(ab, ce_id, ie1_reg_addr);
+
+ if (ce_attr->dest_nentries) {
+ ath12k_ahb_setbit32(ab, ce_id, ie2_reg_addr);
+ ath12k_ahb_setbit32(ab, ce_id + CE_HOST_IE_3_SHIFT,
+ ie3_reg_addr);
+ }
+}
+
+static void ath12k_ahb_ce_irq_disable(struct ath12k_base *ab, u16 ce_id)
+{
+ const struct ce_attr *ce_attr;
+ const struct ce_ie_addr *ce_ie_addr = ab->hw_params->ce_ie_addr;
+ u32 ie1_reg_addr, ie2_reg_addr, ie3_reg_addr;
+
+ ie1_reg_addr = ce_ie_addr->ie1_reg_addr;
+ ie2_reg_addr = ce_ie_addr->ie2_reg_addr;
+ ie3_reg_addr = ce_ie_addr->ie3_reg_addr;
+
+ ce_attr = &ab->hw_params->host_ce_config[ce_id];
+ if (ce_attr->src_nentries)
+ ath12k_ahb_clearbit32(ab, ce_id, ie1_reg_addr);
+
+ if (ce_attr->dest_nentries) {
+ ath12k_ahb_clearbit32(ab, ce_id, ie2_reg_addr);
+ ath12k_ahb_clearbit32(ab, ce_id + CE_HOST_IE_3_SHIFT,
+ ie3_reg_addr);
+ }
+}
+
+static void ath12k_ahb_sync_ce_irqs(struct ath12k_base *ab)
+{
+ int i;
+ int irq_idx;
+
+ for (i = 0; i < ab->hw_params->ce_count; i++) {
+ if (ath12k_ce_get_attr_flags(ab, i) & CE_ATTR_DIS_INTR)
+ continue;
+
+ irq_idx = ATH12K_IRQ_CE0_OFFSET + i;
+ synchronize_irq(ab->irq_num[irq_idx]);
+ }
+}
+
+static void ath12k_ahb_sync_ext_irqs(struct ath12k_base *ab)
+{
+ int i, j;
+ int irq_idx;
+
+ for (i = 0; i < ATH12K_EXT_IRQ_GRP_NUM_MAX; i++) {
+ struct ath12k_ext_irq_grp *irq_grp = &ab->ext_irq_grp[i];
+
+ for (j = 0; j < irq_grp->num_irq; j++) {
+ irq_idx = irq_grp->irqs[j];
+ synchronize_irq(ab->irq_num[irq_idx]);
+ }
+ }
+}
+
+static void ath12k_ahb_ce_irqs_enable(struct ath12k_base *ab)
+{
+ int i;
+
+ for (i = 0; i < ab->hw_params->ce_count; i++) {
+ if (ath12k_ce_get_attr_flags(ab, i) & CE_ATTR_DIS_INTR)
+ continue;
+ ath12k_ahb_ce_irq_enable(ab, i);
+ }
+}
+
+static void ath12k_ahb_ce_irqs_disable(struct ath12k_base *ab)
+{
+ int i;
+
+ for (i = 0; i < ab->hw_params->ce_count; i++) {
+ if (ath12k_ce_get_attr_flags(ab, i) & CE_ATTR_DIS_INTR)
+ continue;
+ ath12k_ahb_ce_irq_disable(ab, i);
+ }
+}
+
+static int ath12k_ahb_start(struct ath12k_base *ab)
+{
+ ath12k_ahb_ce_irqs_enable(ab);
+ ath12k_ce_rx_post_buf(ab);
+
+ return 0;
+}
+
+static void ath12k_ahb_ext_irq_enable(struct ath12k_base *ab)
+{
+ struct ath12k_ext_irq_grp *irq_grp;
+ int i;
+
+ for (i = 0; i < ATH12K_EXT_IRQ_GRP_NUM_MAX; i++) {
+ irq_grp = &ab->ext_irq_grp[i];
+ if (!irq_grp->napi_enabled) {
+ napi_enable(&irq_grp->napi);
+ irq_grp->napi_enabled = true;
+ }
+ ath12k_ahb_ext_grp_enable(irq_grp);
+ }
+}
+
+static void ath12k_ahb_ext_irq_disable(struct ath12k_base *ab)
+{
+ __ath12k_ahb_ext_irq_disable(ab);
+ ath12k_ahb_sync_ext_irqs(ab);
+}
+
+static void ath12k_ahb_stop(struct ath12k_base *ab)
+{
+ if (!test_bit(ATH12K_FLAG_CRASH_FLUSH, &ab->dev_flags))
+ ath12k_ahb_ce_irqs_disable(ab);
+ ath12k_ahb_sync_ce_irqs(ab);
+ ath12k_ahb_cancel_workqueue(ab);
+ del_timer_sync(&ab->rx_replenish_retry);
+ ath12k_ce_cleanup_pipes(ab);
+}
+
+static void ath12k_ahb_init_qmi_ce_config(struct ath12k_base *ab)
+{
+ struct ath12k_qmi_ce_cfg *cfg = &ab->qmi.ce_cfg;
+
+ cfg->tgt_ce_len = ab->hw_params->target_ce_count;
+ cfg->tgt_ce = ab->hw_params->target_ce_config;
+ cfg->svc_to_ce_map_len = ab->hw_params->svc_to_ce_map_len;
+ cfg->svc_to_ce_map = ab->hw_params->svc_to_ce_map;
+ ab->qmi.service_ins_id = ab->hw_params->qmi_service_ins_id;
+}
+
+static void ath12k_ahb_ce_workqueue(struct work_struct *work)
+{
+ struct ath12k_ce_pipe *ce_pipe = from_work(ce_pipe, work, intr_wq);
+
+ ath12k_ce_per_engine_service(ce_pipe->ab, ce_pipe->pipe_num);
+
+ ath12k_ahb_ce_irq_enable(ce_pipe->ab, ce_pipe->pipe_num);
+}
+
+static irqreturn_t ath12k_ahb_ce_interrupt_handler(int irq, void *arg)
+{
+ struct ath12k_ce_pipe *ce_pipe = arg;
+
+ /* last interrupt received for this CE */
+ ce_pipe->timestamp = jiffies;
+
+ ath12k_ahb_ce_irq_disable(ce_pipe->ab, ce_pipe->pipe_num);
+
+ queue_work(system_bh_wq, &ce_pipe->intr_wq);
+
+ return IRQ_HANDLED;
+}
+
+static int ath12k_ahb_ext_grp_napi_poll(struct napi_struct *napi, int budget)
+{
+ struct ath12k_ext_irq_grp *irq_grp = container_of(napi,
+ struct ath12k_ext_irq_grp,
+ napi);
+ struct ath12k_base *ab = irq_grp->ab;
+ int work_done;
+
+ work_done = ath12k_dp_service_srng(ab, irq_grp, budget);
+ if (work_done < budget) {
+ napi_complete_done(napi, work_done);
+ ath12k_ahb_ext_grp_enable(irq_grp);
+ }
+
+ if (work_done > budget)
+ work_done = budget;
+
+ return work_done;
+}
+
+static irqreturn_t ath12k_ahb_ext_interrupt_handler(int irq, void *arg)
+{
+ struct ath12k_ext_irq_grp *irq_grp = arg;
+
+ /* last interrupt received for this group */
+ irq_grp->timestamp = jiffies;
+
+ ath12k_ahb_ext_grp_disable(irq_grp);
+
+ napi_schedule(&irq_grp->napi);
+
+ return IRQ_HANDLED;
+}
+
+static int ath12k_ahb_config_ext_irq(struct ath12k_base *ab)
+{
+ const struct ath12k_hw_ring_mask *ring_mask;
+ struct ath12k_ext_irq_grp *irq_grp;
+ const struct hal_ops *hal_ops;
+ int i, j, irq, irq_idx, ret;
+ u32 num_irq;
+
+ ring_mask = ab->hw_params->ring_mask;
+ hal_ops = ab->hw_params->hal_ops;
+ for (i = 0; i < ATH12K_EXT_IRQ_GRP_NUM_MAX; i++) {
+ irq_grp = &ab->ext_irq_grp[i];
+ num_irq = 0;
+
+ irq_grp->ab = ab;
+ irq_grp->grp_id = i;
+
+ irq_grp->napi_ndev = alloc_netdev_dummy(0);
+ if (!irq_grp->napi_ndev)
+ return -ENOMEM;
+
+ netif_napi_add(irq_grp->napi_ndev, &irq_grp->napi,
+ ath12k_ahb_ext_grp_napi_poll);
+
+ for (j = 0; j < ATH12K_EXT_IRQ_NUM_MAX; j++) {
+ /* For TX ring, ensure that the ring mask and the
+ * tcl_to_wbm_rbm_map point to the same ring number.
+ */
+ if (ring_mask->tx[i] &
+ BIT(hal_ops->tcl_to_wbm_rbm_map[j].wbm_ring_num)) {
+ irq_grp->irqs[num_irq++] =
+ wbm2host_tx_completions_ring1 - j;
+ }
+
+ if (ring_mask->rx[i] & BIT(j)) {
+ irq_grp->irqs[num_irq++] =
+ reo2host_destination_ring1 - j;
+ }
+
+ if (ring_mask->rx_err[i] & BIT(j))
+ irq_grp->irqs[num_irq++] = reo2host_exception;
+
+ if (ring_mask->rx_wbm_rel[i] & BIT(j))
+ irq_grp->irqs[num_irq++] = wbm2host_rx_release;
+
+ if (ring_mask->reo_status[i] & BIT(j))
+ irq_grp->irqs[num_irq++] = reo2host_status;
+
+ if (ring_mask->rx_mon_dest[i] & BIT(j))
+ irq_grp->irqs[num_irq++] =
+ rxdma2host_monitor_destination_mac1;
+ }
+
+ irq_grp->num_irq = num_irq;
+
+ for (j = 0; j < irq_grp->num_irq; j++) {
+ irq_idx = irq_grp->irqs[j];
+
+ irq = platform_get_irq_byname(ab->pdev,
+ irq_name[irq_idx]);
+ ab->irq_num[irq_idx] = irq;
+ irq_set_status_flags(irq, IRQ_NOAUTOEN | IRQ_DISABLE_UNLAZY);
+ ret = devm_request_irq(ab->dev, irq,
+ ath12k_ahb_ext_interrupt_handler,
+ IRQF_TRIGGER_RISING,
+ irq_name[irq_idx], irq_grp);
+ if (ret)
+ ath12k_warn(ab, "failed request_irq for %d\n", irq);
+ }
+ }
+
+ return 0;
+}
+
+static int ath12k_ahb_config_irq(struct ath12k_base *ab)
+{
+ int irq, irq_idx, i;
+ int ret;
+
+ /* Configure CE irqs */
+ for (i = 0; i < ab->hw_params->ce_count; i++) {
+ struct ath12k_ce_pipe *ce_pipe = &ab->ce.ce_pipe[i];
+
+ if (ath12k_ce_get_attr_flags(ab, i) & CE_ATTR_DIS_INTR)
+ continue;
+
+ irq_idx = ATH12K_IRQ_CE0_OFFSET + i;
+
+ INIT_WORK(&ce_pipe->intr_wq, ath12k_ahb_ce_workqueue);
+ irq = platform_get_irq_byname(ab->pdev, irq_name[irq_idx]);
+ ret = devm_request_irq(ab->dev, irq, ath12k_ahb_ce_interrupt_handler,
+ IRQF_TRIGGER_RISING, irq_name[irq_idx],
+ ce_pipe);
+ if (ret)
+ return ret;
+
+ ab->irq_num[irq_idx] = irq;
+ }
+
+ /* Configure external interrupts */
+ ret = ath12k_ahb_config_ext_irq(ab);
+
+ return ret;
+}
+
+static int ath12k_ahb_map_service_to_pipe(struct ath12k_base *ab, u16 service_id,
+ u8 *ul_pipe, u8 *dl_pipe)
+{
+ const struct service_to_pipe *entry;
+ bool ul_set = false, dl_set = false;
+ u32 pipedir;
+ int i;
+
+ for (i = 0; i < ab->hw_params->svc_to_ce_map_len; i++) {
+ entry = &ab->hw_params->svc_to_ce_map[i];
+
+ if (__le32_to_cpu(entry->service_id) != service_id)
+ continue;
+
+ pipedir = __le32_to_cpu(entry->pipedir);
+ if (pipedir == PIPEDIR_IN || pipedir == PIPEDIR_INOUT) {
+ WARN_ON(dl_set);
+ *dl_pipe = __le32_to_cpu(entry->pipenum);
+ dl_set = true;
+ }
+
+ if (pipedir == PIPEDIR_OUT || pipedir == PIPEDIR_INOUT) {
+ WARN_ON(ul_set);
+ *ul_pipe = __le32_to_cpu(entry->pipenum);
+ ul_set = true;
+ }
+ }
+
+ if (WARN_ON(!ul_set || !dl_set))
+ return -ENOENT;
+
+ return 0;
+}
+
+static const struct ath12k_hif_ops ath12k_ahb_hif_ops_ipq5332 = {
+ .start = ath12k_ahb_start,
+ .stop = ath12k_ahb_stop,
+ .read32 = ath12k_ahb_read32,
+ .write32 = ath12k_ahb_write32,
+ .irq_enable = ath12k_ahb_ext_irq_enable,
+ .irq_disable = ath12k_ahb_ext_irq_disable,
+ .map_service_to_pipe = ath12k_ahb_map_service_to_pipe,
+};
+
+static int ath12k_ahb_clock_init(struct ath12k_base *ab)
+{
+ struct ath12k_ahb *ab_ahb = ath12k_ab_to_ahb(ab);
+ int ret;
+
+ ab_ahb->xo_clk = devm_clk_get(ab->dev, "xo");
+ if (IS_ERR_OR_NULL(ab_ahb->xo_clk)) {
+ ret = ab_ahb->xo_clk ? PTR_ERR(ab_ahb->xo_clk) : -ENODEV;
+ return dev_err_probe(&ab->pdev->dev, ret, "failed to get xo clock\n");
+ }
+
+ return 0;
+}
+
+static void ath12k_ahb_clock_deinit(struct ath12k_base *ab)
+{
+ struct ath12k_ahb *ab_ahb = ath12k_ab_to_ahb(ab);
+
+ devm_clk_put(ab->dev, ab_ahb->xo_clk);
+ ab_ahb->xo_clk = NULL;
+}
+
+static int ath12k_ahb_clock_enable(struct ath12k_base *ab)
+{
+ struct ath12k_ahb *ab_ahb = ath12k_ab_to_ahb(ab);
+ int ret;
+
+ if (IS_ERR_OR_NULL(ab_ahb->xo_clk)) {
+ ath12k_err(ab, "clock is not initialized\n");
+ return -EIO;
+ }
+
+ ret = clk_prepare_enable(ab_ahb->xo_clk);
+ if (ret) {
+ ath12k_err(ab, "failed to enable gcc_xo_clk: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static void ath12k_ahb_clock_disable(struct ath12k_base *ab)
+{
+ struct ath12k_ahb *ab_ahb = ath12k_ab_to_ahb(ab);
+
+ clk_disable_unprepare(ab_ahb->xo_clk);
+}
+
+static int ath12k_ahb_resource_init(struct ath12k_base *ab)
+{
+ struct platform_device *pdev = ab->pdev;
+ struct resource *mem_res;
+ int ret;
+
+ ab->mem = devm_platform_get_and_ioremap_resource(pdev, 0, &mem_res);
+ if (IS_ERR(ab->mem)) {
+ ret = dev_err_probe(&pdev->dev, PTR_ERR(ab->mem), "ioremap error\n");
+ goto out;
+ }
+
+ ab->mem_len = resource_size(mem_res);
+
+ if (ab->hw_params->ce_remap) {
+ const struct ce_remap *ce_remap = ab->hw_params->ce_remap;
+ /* CE register space is moved out of WCSS and the space is not
+ * contiguous, hence remapping the CE registers to a new space
+ * for accessing them.
+ */
+ ab->mem_ce = ioremap(ce_remap->base, ce_remap->size);
+ if (IS_ERR(ab->mem_ce)) {
+ dev_err(&pdev->dev, "ce ioremap error\n");
+ ret = -ENOMEM;
+ goto err_mem_unmap;
+ }
+ ab->ce_remap = true;
+ ab->ce_remap_base_addr = HAL_IPQ5332_CE_WFSS_REG_BASE;
+ }
+
+ ret = ath12k_ahb_clock_init(ab);
+ if (ret)
+ goto err_mem_ce_unmap;
+
+ ret = ath12k_ahb_clock_enable(ab);
+ if (ret)
+ goto err_clock_deinit;
+
+ return 0;
+
+err_clock_deinit:
+ ath12k_ahb_clock_deinit(ab);
+
+err_mem_ce_unmap:
+ if (ab->hw_params->ce_remap)
+ iounmap(ab->mem_ce);
+
+err_mem_unmap:
+ ab->mem_ce = NULL;
+ devm_iounmap(ab->dev, ab->mem);
+
+out:
+ ab->mem = NULL;
+ return ret;
+}
+
+static void ath12k_ahb_resource_deinit(struct ath12k_base *ab)
+{
+ if (ab->mem)
+ devm_iounmap(ab->dev, ab->mem);
+
+ if (ab->mem_ce)
+ iounmap(ab->mem_ce);
+
+ ab->mem = NULL;
+ ab->mem_ce = NULL;
+
+ ath12k_ahb_clock_disable(ab);
+ ath12k_ahb_clock_deinit(ab);
+}
+
+static enum ath12k_hw_rev ath12k_ahb_get_hw_rev(struct platform_device *pdev)
+{
+ const struct of_device_id *of_id;
+
+ of_id = of_match_device(ath12k_ahb_of_match, &pdev->dev);
+ if (!of_id) {
+ dev_err(&pdev->dev, "Failed to find matching device tree id\n");
+ return -EINVAL;
+ }
+
+ return (enum ath12k_hw_rev)of_id->data;
+}
+
+static int ath12k_ahb_probe(struct platform_device *pdev)
+{
+ struct ath12k_base *ab;
+ const struct ath12k_hif_ops *hif_ops;
+ struct device_node *mem_node;
+ enum ath12k_hw_rev hw_rev;
+ u32 addr;
+ int ret;
+
+ hw_rev = ath12k_ahb_get_hw_rev(pdev);
+ switch (hw_rev) {
+ case ATH12K_HW_IPQ5332_HW10:
+ hif_ops = &ath12k_ahb_hif_ops_ipq5332;
+ break;
+ default:
+ return -EOPNOTSUPP;
+ }
+
+ ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
+ if (ret) {
+ dev_err(&pdev->dev, "Failed to set 32-bit coherent dma\n");
+ return ret;
+ }
+
+ ab = ath12k_core_alloc(&pdev->dev, sizeof(struct ath12k_ahb),
+ ATH12K_BUS_AHB);
+ if (!ab) {
+ dev_err(&pdev->dev, "failed to allocate ath12k base\n");
+ return -ENOMEM;
+ }
+
+ ab->hif.ops = hif_ops;
+ ab->pdev = pdev;
+ ab->hw_rev = hw_rev;
+ platform_set_drvdata(pdev, ab);
+
+ /* Set fixed_mem_region to true for platforms that support fixed memory
+ * reservation from DT. If memory is reserved from DT for FW, ath12k driver
+ * need not to allocate memory.
+ */
+ if (!of_property_read_u32(ab->dev->of_node, "memory-region", &addr)) {
+ set_bit(ATH12K_FLAG_FIXED_MEM_REGION, &ab->dev_flags);
+
+ /* If the platform supports fixed memory, then it should define/
+ * reserve MLO global memory in DT to support Multi Link Operation
+ * (IEEE 802.11be).
+ * If MLO global memory is not reserved in fixed memory mode, then
+ * MLO cannot be supported.
+ */
+ mem_node = ath12k_core_get_reserved_mem_by_name(ab, "mlo-global-mem");
+ if (!mem_node)
+ ab->single_chip_mlo_supp = false;
+ else
+ of_node_put(mem_node);
+ }
+
+ ret = ath12k_core_pre_init(ab);
+ if (ret)
+ goto err_core_free;
+
+ ret = ath12k_ahb_resource_init(ab);
+ if (ret)
+ goto err_core_free;
+
+ ret = ath12k_hal_srng_init(ab);
+ if (ret)
+ goto err_resource_deinit;
+
+ ret = ath12k_ce_alloc_pipes(ab);
+ if (ret) {
+ ath12k_err(ab, "failed to allocate ce pipes: %d\n", ret);
+ goto err_hal_srng_deinit;
+ }
+
+ ath12k_ahb_init_qmi_ce_config(ab);
+
+ ret = ath12k_ahb_config_irq(ab);
+ if (ret) {
+ ath12k_err(ab, "failed to configure irq: %d\n", ret);
+ goto err_ce_free;
+ }
+
+ ret = ath12k_core_init(ab);
+ if (ret) {
+ ath12k_err(ab, "failed to init core: %d\n", ret);
+ goto err_ce_free;
+ }
+
+ return 0;
+
+err_ce_free:
+ ath12k_ce_free_pipes(ab);
+
+err_hal_srng_deinit:
+ ath12k_hal_srng_deinit(ab);
+
+err_resource_deinit:
+ ath12k_ahb_resource_deinit(ab);
+
+err_core_free:
+ ath12k_core_free(ab);
+ platform_set_drvdata(pdev, NULL);
+
+ return ret;
+}
+
+static void ath12k_ahb_remove_prepare(struct ath12k_base *ab)
+{
+ unsigned long left;
+
+ if (test_bit(ATH12K_FLAG_RECOVERY, &ab->dev_flags)) {
+ left = wait_for_completion_timeout(&ab->driver_recovery,
+ ATH12K_AHB_RECOVERY_TIMEOUT);
+ if (!left)
+ ath12k_warn(ab, "failed to receive recovery response completion\n");
+ }
+
+ set_bit(ATH12K_FLAG_UNREGISTERING, &ab->dev_flags);
+ cancel_work_sync(&ab->restart_work);
+ cancel_work_sync(&ab->qmi.event_work);
+}
+
+static void ath12k_ahb_free_resources(struct ath12k_base *ab)
+{
+ struct platform_device *pdev = ab->pdev;
+
+ ath12k_hal_srng_deinit(ab);
+ ath12k_ce_free_pipes(ab);
+ ath12k_ahb_resource_deinit(ab);
+ ath12k_core_free(ab);
+ platform_set_drvdata(pdev, NULL);
+}
+
+static void ath12k_ahb_remove(struct platform_device *pdev)
+{
+ struct ath12k_base *ab = platform_get_drvdata(pdev);
+
+ if (test_bit(ATH12K_FLAG_QMI_FAIL, &ab->dev_flags)) {
+ ath12k_qmi_deinit_service(ab);
+ goto qmi_fail;
+ }
+
+ ath12k_ahb_remove_prepare(ab);
+ ath12k_core_deinit(ab);
+
+qmi_fail:
+ ath12k_ahb_free_resources(ab);
+}
+
+static void ath12k_ahb_shutdown(struct platform_device *pdev)
+{
+ struct ath12k_base *ab = platform_get_drvdata(pdev);
+
+ /* platform shutdown() & remove() are mutually exclusive.
+ * remove() is invoked during rmmod & shutdown() during
+ * system reboot/shutdown.
+ */
+ ath12k_ahb_remove_prepare(ab);
+
+ if (!(test_bit(ATH12K_FLAG_REGISTERED, &ab->dev_flags)))
+ goto free_resources;
+
+ ath12k_core_deinit(ab);
+
+free_resources:
+ ath12k_ahb_free_resources(ab);
+}
+
+static struct platform_driver ath12k_ahb_driver = {
+ .driver = {
+ .name = "ath12k_ahb",
+ .of_match_table = ath12k_ahb_of_match,
+ },
+ .probe = ath12k_ahb_probe,
+ .remove = ath12k_ahb_remove,
+ .shutdown = ath12k_ahb_shutdown,
+};
+
+int ath12k_ahb_init(void)
+{
+ return platform_driver_register(&ath12k_ahb_driver);
+}
+
+void ath12k_ahb_exit(void)
+{
+ platform_driver_unregister(&ath12k_ahb_driver);
+}
diff --git a/drivers/net/wireless/ath/ath12k/ahb.h b/drivers/net/wireless/ath/ath12k/ahb.h
new file mode 100644
index 000000000000..64f0696588c0
--- /dev/null
+++ b/drivers/net/wireless/ath/ath12k/ahb.h
@@ -0,0 +1,37 @@
+/* SPDX-License-Identifier: BSD-3-Clause-Clear */
+/*
+ * Copyright (c) 2018-2019 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2022-2025, Qualcomm Innovation Center, Inc. All rights reserved.
+ */
+#ifndef ATH12K_AHB_H
+#define ATH12K_AHB_H
+
+#include <linux/clk.h>
+#include "core.h"
+
+#define ATH12K_AHB_RECOVERY_TIMEOUT (3 * HZ)
+
+#define ATH12K_AHB_SMP2P_SMEM_MSG GENMASK(15, 0)
+#define ATH12K_AHB_SMP2P_SMEM_SEQ_NO GENMASK(31, 16)
+#define ATH12K_AHB_SMP2P_SMEM_VALUE_MASK 0xFFFFFFFF
+#define ATH12K_PCI_CE_WAKE_IRQ 2
+#define ATH12K_PCI_IRQ_CE0_OFFSET 3
+
+enum ath12k_ahb_smp2p_msg_id {
+ ATH12K_AHB_POWER_SAVE_ENTER = 1,
+ ATH12K_AHB_POWER_SAVE_EXIT,
+};
+
+struct ath12k_base;
+
+struct ath12k_ahb {
+ struct rproc *tgt_rproc;
+ struct clk *xo_clk;
+};
+
+static inline struct ath12k_ahb *ath12k_ab_to_ahb(struct ath12k_base *ab)
+{
+ return (struct ath12k_ahb *)ab->drv_priv;
+}
+
+#endif
diff --git a/drivers/net/wireless/ath/ath12k/core.h b/drivers/net/wireless/ath/ath12k/core.h
index fa2eadd60c44..297e01d191ab 100644
--- a/drivers/net/wireless/ath/ath12k/core.h
+++ b/drivers/net/wireless/ath/ath12k/core.h
@@ -162,6 +162,7 @@ enum ath12k_firmware_mode {

#define ATH12K_IRQ_NUM_MAX 57
#define ATH12K_EXT_IRQ_NUM_MAX 16
+#define ATH12K_MAX_TCL_RING_NUM 3

struct ath12k_ext_irq_grp {
struct ath12k_base *ab;
@@ -169,6 +170,7 @@ struct ath12k_ext_irq_grp {
u32 num_irq;
u32 grp_id;
u64 timestamp;
+ bool napi_enabled;
struct napi_struct napi;
struct net_device *napi_ndev;
};
@@ -1275,6 +1277,8 @@ static inline const char *ath12k_bus_str(enum ath12k_bus bus)
switch (bus) {
case ATH12K_BUS_PCI:
return "pci";
+ case ATH12K_BUS_AHB:
+ return "ahb";
}

return "unknown";
diff --git a/drivers/net/wireless/ath/ath12k/hal.h b/drivers/net/wireless/ath/ath12k/hal.h
index 47ff0b1bfdf4..9f12ed84a653 100644
--- a/drivers/net/wireless/ath/ath12k/hal.h
+++ b/drivers/net/wireless/ath/ath12k/hal.h
@@ -42,6 +42,7 @@ struct ath12k_base;
#define HAL_SHADOW_REG(x) (HAL_SHADOW_BASE_ADDR + (4 * (x)))

/* WCSS Relative address */
+#define HAL_SEQ_WCSS_CMEM_OFFSET 0x00100000
#define HAL_SEQ_WCSS_UMAC_OFFSET 0x00a00000
#define HAL_SEQ_WCSS_UMAC_REO_REG 0x00a38000
#define HAL_SEQ_WCSS_UMAC_TCL_REG 0x00a44000
diff --git a/drivers/net/wireless/ath/ath12k/hw.h b/drivers/net/wireless/ath/ath12k/hw.h
index 5123d2f51865..a4332588b117 100644
--- a/drivers/net/wireless/ath/ath12k/hw.h
+++ b/drivers/net/wireless/ath/ath12k/hw.h
@@ -121,6 +121,7 @@ enum ath12k_hw_rate_ofdm {

enum ath12k_bus {
ATH12K_BUS_PCI,
+ ATH12K_BUS_AHB,
};

#define ATH12K_EXT_IRQ_GRP_NUM_MAX 11
--
2.34.1