1 files changed, 218 insertions, 6 deletions

diff --git a/drivers/net/wireless/ath/ath11k/pci.c b/drivers/net/wireless/ath/ath11k/pci.c
index 8d63b84d1261..7114eca8810d 100644
--- a/drivers/net/wireless/ath/ath11k/pci.c
+++ b/drivers/net/wireless/ath/ath11k/pci.c
@@ -1,13 +1,15 @@
 // SPDX-License-Identifier: BSD-3-Clause-Clear
 /*
  * Copyright (c) 2019-2020 The Linux Foundation. All rights reserved.
- * Copyright (c) 2021-2024 Qualcomm Innovation Center, Inc. All rights reserved.
+ * Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries.
  */
 
 #include <linux/module.h>
 #include <linux/msi.h>
 #include <linux/pci.h>
 #include <linux/of.h>
+#include <linux/time.h>
+#include <linux/vmalloc.h>
 
 #include "pci.h"
 #include "core.h"
@@ -35,7 +37,7 @@ 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);
@@ -175,6 +177,19 @@ static inline void ath11k_pci_select_static_window(struct ath11k_pci *ab_pci)
 		  ab_pci->ab->mem + ATH11K_PCI_WINDOW_REG_ADDRESS);
 }
 
+static void ath11k_pci_restore_window(struct ath11k_base *ab)
+{
+	struct ath11k_pci *ab_pci = ath11k_pci_priv(ab);
+
+	spin_lock_bh(&ab_pci->window_lock);
+
+	iowrite32(ATH11K_PCI_WINDOW_ENABLE_BIT | ab_pci->register_window,
+		  ab->mem + ATH11K_PCI_WINDOW_REG_ADDRESS);
+	ioread32(ab->mem + ATH11K_PCI_WINDOW_REG_ADDRESS);
+
+	spin_unlock_bh(&ab_pci->window_lock);
+}
+
 static void ath11k_pci_soc_global_reset(struct ath11k_base *ab)
 {
 	u32 val, delay;
@@ -199,6 +214,11 @@ static void ath11k_pci_soc_global_reset(struct ath11k_base *ab)
 	val = ath11k_pcic_read32(ab, PCIE_SOC_GLOBAL_RESET);
 	if (val == 0xffffffff)
 		ath11k_warn(ab, "link down error during global reset\n");
+
+	/* Restore window register as its content is cleared during
+	 * hardware global reset, such that it aligns with host cache.
+	 */
+	ath11k_pci_restore_window(ab);
 }
 
 static void ath11k_pci_clear_dbg_registers(struct ath11k_base *ab)
@@ -610,6 +630,187 @@ static void ath11k_pci_aspm_restore(struct ath11k_pci *ab_pci)
 						   PCI_EXP_LNKCTL_ASPMC);
 }
 
+#ifdef CONFIG_DEV_COREDUMP
+static int ath11k_pci_coredump_calculate_size(struct ath11k_base *ab, u32 *dump_seg_sz)
+{
+	struct ath11k_pci *ab_pci = ath11k_pci_priv(ab);
+	struct mhi_controller *mhi_ctrl = ab_pci->mhi_ctrl;
+	struct image_info *rddm_img, *fw_img;
+	struct ath11k_tlv_dump_data *dump_tlv;
+	enum ath11k_fw_crash_dump_type mem_type;
+	u32 len = 0, rddm_tlv_sz = 0, paging_tlv_sz = 0;
+	struct ath11k_dump_file_data *file_data;
+	int i;
+
+	rddm_img = mhi_ctrl->rddm_image;
+	if (!rddm_img) {
+		ath11k_err(ab, "No RDDM dump found\n");
+		return 0;
+	}
+
+	fw_img = mhi_ctrl->fbc_image;
+
+	for (i = 0; i < fw_img->entries ; i++) {
+		if (!fw_img->mhi_buf[i].buf)
+			continue;
+
+		paging_tlv_sz += fw_img->mhi_buf[i].len;
+	}
+	dump_seg_sz[FW_CRASH_DUMP_PAGING_DATA] = paging_tlv_sz;
+
+	for (i = 0; i < rddm_img->entries; i++) {
+		if (!rddm_img->mhi_buf[i].buf)
+			continue;
+
+		rddm_tlv_sz += rddm_img->mhi_buf[i].len;
+	}
+	dump_seg_sz[FW_CRASH_DUMP_RDDM_DATA] = rddm_tlv_sz;
+
+	for (i = 0; i < ab->qmi.mem_seg_count; i++) {
+		mem_type = ath11k_coredump_get_dump_type(ab->qmi.target_mem[i].type);
+
+		if (mem_type == FW_CRASH_DUMP_NONE)
+			continue;
+
+		if (mem_type == FW_CRASH_DUMP_TYPE_MAX) {
+			ath11k_dbg(ab, ATH11K_DBG_PCI,
+				   "target mem region type %d not supported",
+				   ab->qmi.target_mem[i].type);
+			continue;
+		}
+
+		if (!ab->qmi.target_mem[i].anyaddr)
+			continue;
+
+		dump_seg_sz[mem_type] += ab->qmi.target_mem[i].size;
+	}
+
+	for (i = 0; i < FW_CRASH_DUMP_TYPE_MAX; i++) {
+		if (!dump_seg_sz[i])
+			continue;
+
+		len += sizeof(*dump_tlv) + dump_seg_sz[i];
+	}
+
+	if (len)
+		len += sizeof(*file_data);
+
+	return len;
+}
+
+static void ath11k_pci_coredump_download(struct ath11k_base *ab)
+{
+	struct ath11k_pci *ab_pci = ath11k_pci_priv(ab);
+	struct mhi_controller *mhi_ctrl = ab_pci->mhi_ctrl;
+	struct image_info *rddm_img, *fw_img;
+	struct timespec64 timestamp;
+	int i, len, mem_idx;
+	enum ath11k_fw_crash_dump_type mem_type;
+	struct ath11k_dump_file_data *file_data;
+	struct ath11k_tlv_dump_data *dump_tlv;
+	size_t hdr_len = sizeof(*file_data);
+	void *buf;
+	u32 dump_seg_sz[FW_CRASH_DUMP_TYPE_MAX] = {};
+
+	ath11k_mhi_coredump(mhi_ctrl, false);
+
+	len = ath11k_pci_coredump_calculate_size(ab, dump_seg_sz);
+	if (!len) {
+		ath11k_warn(ab, "No crash dump data found for devcoredump");
+		return;
+	}
+
+	rddm_img = mhi_ctrl->rddm_image;
+	fw_img = mhi_ctrl->fbc_image;
+
+	/* dev_coredumpv() requires vmalloc data */
+	buf = vzalloc(len);
+	if (!buf)
+		return;
+
+	ab->dump_data = buf;
+	ab->ath11k_coredump_len = len;
+	file_data = ab->dump_data;
+	strscpy(file_data->df_magic, "ATH11K-FW-DUMP", sizeof(file_data->df_magic));
+	file_data->len = cpu_to_le32(len);
+	file_data->version = cpu_to_le32(ATH11K_FW_CRASH_DUMP_V2);
+	file_data->chip_id = cpu_to_le32(ab_pci->dev_id);
+	file_data->qrtr_id = cpu_to_le32(ab_pci->ab->qmi.service_ins_id);
+	file_data->bus_id = cpu_to_le32(pci_domain_nr(ab_pci->pdev->bus));
+	guid_gen(&file_data->guid);
+	ktime_get_real_ts64(&timestamp);
+	file_data->tv_sec = cpu_to_le64(timestamp.tv_sec);
+	file_data->tv_nsec = cpu_to_le64(timestamp.tv_nsec);
+	buf += hdr_len;
+	dump_tlv = buf;
+	dump_tlv->type = cpu_to_le32(FW_CRASH_DUMP_PAGING_DATA);
+	dump_tlv->tlv_len = cpu_to_le32(dump_seg_sz[FW_CRASH_DUMP_PAGING_DATA]);
+	buf += COREDUMP_TLV_HDR_SIZE;
+
+	/* append all segments together as they are all part of a single contiguous
+	 * block of memory
+	 */
+	for (i = 0; i < fw_img->entries ; i++) {
+		if (!fw_img->mhi_buf[i].buf)
+			continue;
+
+		memcpy_fromio(buf, (void const __iomem *)fw_img->mhi_buf[i].buf,
+			      fw_img->mhi_buf[i].len);
+		buf += fw_img->mhi_buf[i].len;
+	}
+
+	dump_tlv = buf;
+	dump_tlv->type = cpu_to_le32(FW_CRASH_DUMP_RDDM_DATA);
+	dump_tlv->tlv_len = cpu_to_le32(dump_seg_sz[FW_CRASH_DUMP_RDDM_DATA]);
+	buf += COREDUMP_TLV_HDR_SIZE;
+
+	/* append all segments together as they are all part of a single contiguous
+	 * block of memory
+	 */
+	for (i = 0; i < rddm_img->entries; i++) {
+		if (!rddm_img->mhi_buf[i].buf)
+			continue;
+
+		memcpy_fromio(buf, (void const __iomem *)rddm_img->mhi_buf[i].buf,
+			      rddm_img->mhi_buf[i].len);
+		buf += rddm_img->mhi_buf[i].len;
+	}
+
+	mem_idx = FW_CRASH_DUMP_REMOTE_MEM_DATA;
+	for (; mem_idx < FW_CRASH_DUMP_TYPE_MAX; mem_idx++) {
+		if (mem_idx == FW_CRASH_DUMP_NONE)
+			continue;
+
+		for (i = 0; i < ab->qmi.mem_seg_count; i++) {
+			mem_type = ath11k_coredump_get_dump_type
+						(ab->qmi.target_mem[i].type);
+
+			if (mem_type != mem_idx)
+				continue;
+
+			if (!ab->qmi.target_mem[i].anyaddr) {
+				ath11k_dbg(ab, ATH11K_DBG_PCI,
+					   "Skipping mem region type %d",
+					   ab->qmi.target_mem[i].type);
+				continue;
+			}
+
+			dump_tlv = buf;
+			dump_tlv->type = cpu_to_le32(mem_idx);
+			dump_tlv->tlv_len = cpu_to_le32(dump_seg_sz[mem_idx]);
+			buf += COREDUMP_TLV_HDR_SIZE;
+
+			memcpy_fromio(buf, ab->qmi.target_mem[i].iaddr,
+				      ab->qmi.target_mem[i].size);
+
+			buf += ab->qmi.target_mem[i].size;
+		}
+	}
+
+	queue_work(ab->workqueue, &ab->dump_work);
+}
+#endif
+
 static int ath11k_pci_power_up(struct ath11k_base *ab)
 {
 	struct ath11k_pci *ab_pci = ath11k_pci_priv(ab);
@@ -713,6 +914,9 @@ static const struct ath11k_hif_ops ath11k_pci_hif_ops = {
 	.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,
+#ifdef CONFIG_DEV_COREDUMP
+	.coredump_download = ath11k_pci_coredump_download,
+#endif
 };
 
 static void ath11k_pci_read_hw_version(struct ath11k_base *ab, u32 *major, u32 *minor)
@@ -735,7 +939,7 @@ static int ath11k_pci_set_irq_affinity_hint(struct ath11k_pci *ab_pci,
 	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);
+	return irq_set_affinity_and_hint(ab_pci->pdev->irq, m);
 }
 
 static int ath11k_pci_probe(struct pci_dev *pdev,
@@ -743,7 +947,7 @@ static int ath11k_pci_probe(struct pci_dev *pdev,
 {
 	struct ath11k_base *ab;
 	struct ath11k_pci *ab_pci;
-	u32 soc_hw_version_major, soc_hw_version_minor, addr;
+	u32 soc_hw_version_major, soc_hw_version_minor;
 	int ret;
 	u32 sub_version;
 
@@ -769,8 +973,7 @@ static int ath11k_pci_probe(struct pci_dev *pdev,
 	 * 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)
+	if (of_property_present(ab->dev->of_node, "memory-region"))
 		set_bit(ATH11K_FLAG_FIXED_MEM_RGN, &ab->dev_flags);
 
 	ret = ath11k_pci_claim(ab_pci, pdev);
@@ -846,6 +1049,9 @@ static int ath11k_pci_probe(struct pci_dev *pdev,
 				case 0x1019D0E1:
 					ab->hw_rev = ATH11K_HW_QCA2066_HW21;
 					break;
+				case 0x001e60e1:
+					ab->hw_rev = ATH11K_HW_QCA6698AQ_HW21;
+					break;
 				default:
 					ab->hw_rev = ATH11K_HW_WCN6855_HW21;
 				}
@@ -936,6 +1142,8 @@ unsupported_wcn6855_soc:
 	return 0;
 
 err_free_irq:
+	/* __free_irq() expects the caller to have cleared the affinity hint */
+	ath11k_pci_set_irq_affinity_hint(ab_pci, NULL);
 	ath11k_pcic_free_irq(ab);
 
 err_ce_free:
@@ -973,14 +1181,18 @@ static void ath11k_pci_remove(struct pci_dev *pdev)
 		ath11k_pci_power_down(ab, false);
 		ath11k_debugfs_soc_destroy(ab);
 		ath11k_qmi_deinit_service(ab);
+		ath11k_core_pm_notifier_unregister(ab);
 		goto qmi_fail;
 	}
 
 	set_bit(ATH11K_FLAG_UNREGISTERING, &ab->dev_flags);
 
+	cancel_work_sync(&ab->reset_work);
+	cancel_work_sync(&ab->dump_work);
 	ath11k_core_deinit(ab);
 
 qmi_fail:
+	ath11k_fw_destroy(ab);
 	ath11k_mhi_unregister(ab_pci);
 
 	ath11k_pcic_free_irq(ab);