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path: root/drivers/net/wireless/ath/ath12k/mhi.c
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Diffstat (limited to 'drivers/net/wireless/ath/ath12k/mhi.c')
-rw-r--r--drivers/net/wireless/ath/ath12k/mhi.c117
1 files changed, 53 insertions, 64 deletions
diff --git a/drivers/net/wireless/ath/ath12k/mhi.c b/drivers/net/wireless/ath/ath12k/mhi.c
index adb8c3ec1950..08f44baf182a 100644
--- a/drivers/net/wireless/ath/ath12k/mhi.c
+++ b/drivers/net/wireless/ath/ath12k/mhi.c
@@ -1,7 +1,7 @@
// SPDX-License-Identifier: BSD-3-Clause-Clear
/*
* Copyright (c) 2020-2021 The Linux Foundation. All rights reserved.
- * Copyright (c) 2021-2024 Qualcomm Innovation Center, Inc. All rights reserved.
+ * Copyright (c) 2021-2025 Qualcomm Innovation Center, Inc. All rights reserved.
*/
#include <linux/msi.h>
@@ -16,37 +16,10 @@
#define MHI_TIMEOUT_DEFAULT_MS 90000
#define OTP_INVALID_BOARD_ID 0xFFFF
#define OTP_VALID_DUALMAC_BOARD_ID_MASK 0x1000
+#define MHI_CB_INVALID 0xff
static const struct mhi_channel_config ath12k_mhi_channels_qcn9274[] = {
{
- .num = 0,
- .name = "LOOPBACK",
- .num_elements = 32,
- .event_ring = 1,
- .dir = DMA_TO_DEVICE,
- .ee_mask = 0x4,
- .pollcfg = 0,
- .doorbell = MHI_DB_BRST_DISABLE,
- .lpm_notify = false,
- .offload_channel = false,
- .doorbell_mode_switch = false,
- .auto_queue = false,
- },
- {
- .num = 1,
- .name = "LOOPBACK",
- .num_elements = 32,
- .event_ring = 1,
- .dir = DMA_FROM_DEVICE,
- .ee_mask = 0x4,
- .pollcfg = 0,
- .doorbell = MHI_DB_BRST_DISABLE,
- .lpm_notify = false,
- .offload_channel = false,
- .doorbell_mode_switch = false,
- .auto_queue = false,
- },
- {
.num = 20,
.name = "IPCR",
.num_elements = 32,
@@ -112,34 +85,6 @@ const struct mhi_controller_config ath12k_mhi_config_qcn9274 = {
static const struct mhi_channel_config ath12k_mhi_channels_wcn7850[] = {
{
- .num = 0,
- .name = "LOOPBACK",
- .num_elements = 32,
- .event_ring = 0,
- .dir = DMA_TO_DEVICE,
- .ee_mask = 0x4,
- .pollcfg = 0,
- .doorbell = MHI_DB_BRST_DISABLE,
- .lpm_notify = false,
- .offload_channel = false,
- .doorbell_mode_switch = false,
- .auto_queue = false,
- },
- {
- .num = 1,
- .name = "LOOPBACK",
- .num_elements = 32,
- .event_ring = 0,
- .dir = DMA_FROM_DEVICE,
- .ee_mask = 0x4,
- .pollcfg = 0,
- .doorbell = MHI_DB_BRST_DISABLE,
- .lpm_notify = false,
- .offload_channel = false,
- .doorbell_mode_switch = false,
- .auto_queue = false,
- },
- {
.num = 20,
.name = "IPCR",
.num_elements = 64,
@@ -196,7 +141,7 @@ const struct mhi_controller_config ath12k_mhi_config_wcn7850 = {
.max_channels = 128,
.timeout_ms = 2000,
.use_bounce_buf = false,
- .buf_len = 0,
+ .buf_len = 8192,
.num_channels = ARRAY_SIZE(ath12k_mhi_channels_wcn7850),
.ch_cfg = ath12k_mhi_channels_wcn7850,
.num_events = ARRAY_SIZE(ath12k_mhi_events_wcn7850),
@@ -324,6 +269,7 @@ static void ath12k_mhi_op_status_cb(struct mhi_controller *mhi_cntrl,
enum mhi_callback cb)
{
struct ath12k_base *ab = dev_get_drvdata(mhi_cntrl->cntrl_dev);
+ struct ath12k_pci *ab_pci = ath12k_pci_priv(ab);
ath12k_dbg(ab, ATH12K_DBG_BOOT, "mhi notify status reason %s\n",
ath12k_mhi_op_callback_to_str(cb));
@@ -333,12 +279,23 @@ static void ath12k_mhi_op_status_cb(struct mhi_controller *mhi_cntrl,
ath12k_warn(ab, "firmware crashed: MHI_CB_SYS_ERROR\n");
break;
case MHI_CB_EE_RDDM:
- if (!(test_bit(ATH12K_FLAG_UNREGISTERING, &ab->dev_flags)))
+ if (ab_pci->mhi_pre_cb == MHI_CB_EE_RDDM) {
+ ath12k_dbg(ab, ATH12K_DBG_BOOT,
+ "do not queue again for consecutive RDDM event\n");
+ break;
+ }
+
+ if (!(test_bit(ATH12K_FLAG_UNREGISTERING, &ab->dev_flags))) {
+ set_bit(ATH12K_FLAG_CRASH_FLUSH, &ab->dev_flags);
+ set_bit(ATH12K_FLAG_RECOVERY, &ab->dev_flags);
queue_work(ab->workqueue_aux, &ab->reset_work);
+ }
break;
default:
break;
}
+
+ ab_pci->mhi_pre_cb = cb;
}
static int ath12k_mhi_op_read_reg(struct mhi_controller *mhi_cntrl,
@@ -369,6 +326,7 @@ int ath12k_mhi_register(struct ath12k_pci *ab_pci)
if (!mhi_ctrl)
return -ENOMEM;
+ ab_pci->mhi_pre_cb = MHI_CB_INVALID;
ab_pci->mhi_ctrl = mhi_ctrl;
mhi_ctrl->cntrl_dev = ab->dev;
mhi_ctrl->regs = ab->mem;
@@ -385,7 +343,6 @@ int ath12k_mhi_register(struct ath12k_pci *ab_pci)
"failed to read board id\n");
} else if (board_id & OTP_VALID_DUALMAC_BOARD_ID_MASK) {
dualmac = true;
- ab->slo_capable = false;
ath12k_dbg(ab, ATH12K_DBG_BOOT,
"dualmac fw selected for board id: %x\n", board_id);
}
@@ -425,7 +382,7 @@ int ath12k_mhi_register(struct ath12k_pci *ab_pci)
mhi_ctrl->irq_flags = IRQF_SHARED | IRQF_NOBALANCING;
mhi_ctrl->iova_start = 0;
- mhi_ctrl->iova_stop = 0xffffffff;
+ mhi_ctrl->iova_stop = ab_pci->dma_mask;
mhi_ctrl->sbl_size = SZ_512K;
mhi_ctrl->seg_len = SZ_512K;
mhi_ctrl->fbc_download = true;
@@ -470,6 +427,8 @@ static char *ath12k_mhi_state_to_str(enum ath12k_mhi_state mhi_state)
return "POWER_ON";
case ATH12K_MHI_POWER_OFF:
return "POWER_OFF";
+ case ATH12K_MHI_POWER_OFF_KEEP_DEV:
+ return "POWER_OFF_KEEP_DEV";
case ATH12K_MHI_FORCE_POWER_OFF:
return "FORCE_POWER_OFF";
case ATH12K_MHI_SUSPEND:
@@ -501,6 +460,7 @@ static void ath12k_mhi_set_state_bit(struct ath12k_pci *ab_pci,
set_bit(ATH12K_MHI_POWER_ON, &ab_pci->mhi_state);
break;
case ATH12K_MHI_POWER_OFF:
+ case ATH12K_MHI_POWER_OFF_KEEP_DEV:
case ATH12K_MHI_FORCE_POWER_OFF:
clear_bit(ATH12K_MHI_POWER_ON, &ab_pci->mhi_state);
clear_bit(ATH12K_MHI_TRIGGER_RDDM, &ab_pci->mhi_state);
@@ -544,6 +504,7 @@ static int ath12k_mhi_check_state_bit(struct ath12k_pci *ab_pci,
return 0;
break;
case ATH12K_MHI_POWER_OFF:
+ case ATH12K_MHI_POWER_OFF_KEEP_DEV:
case ATH12K_MHI_SUSPEND:
if (test_bit(ATH12K_MHI_POWER_ON, &ab_pci->mhi_state) &&
!test_bit(ATH12K_MHI_SUSPEND, &ab_pci->mhi_state))
@@ -594,12 +555,27 @@ static int ath12k_mhi_set_state(struct ath12k_pci *ab_pci,
ret = 0;
break;
case ATH12K_MHI_POWER_ON:
- ret = mhi_async_power_up(ab_pci->mhi_ctrl);
+ /* In case of resume, QRTR's resume_early() is called
+ * right after ath12k' resume_early(). Since QRTR requires
+ * MHI mission mode state when preparing IPCR channels
+ * (see ee_mask of that channel), we need to use the 'sync'
+ * version here to make sure MHI is in that state when we
+ * return. Or QRTR might resume before that state comes,
+ * and as a result it fails.
+ *
+ * The 'sync' version works for non-resume (normal power on)
+ * case as well.
+ */
+ ret = mhi_sync_power_up(ab_pci->mhi_ctrl);
break;
case ATH12K_MHI_POWER_OFF:
mhi_power_down(ab_pci->mhi_ctrl, true);
ret = 0;
break;
+ case ATH12K_MHI_POWER_OFF_KEEP_DEV:
+ mhi_power_down_keep_dev(ab_pci->mhi_ctrl, true);
+ ret = 0;
+ break;
case ATH12K_MHI_FORCE_POWER_OFF:
mhi_power_down(ab_pci->mhi_ctrl, false);
ret = 0;
@@ -653,9 +629,17 @@ out:
return ret;
}
-void ath12k_mhi_stop(struct ath12k_pci *ab_pci)
+void ath12k_mhi_stop(struct ath12k_pci *ab_pci, bool is_suspend)
{
- ath12k_mhi_set_state(ab_pci, ATH12K_MHI_POWER_OFF);
+ /* During suspend we need to use mhi_power_down_keep_dev()
+ * workaround, otherwise ath12k_core_resume() will timeout
+ * during resume.
+ */
+ if (is_suspend)
+ ath12k_mhi_set_state(ab_pci, ATH12K_MHI_POWER_OFF_KEEP_DEV);
+ else
+ ath12k_mhi_set_state(ab_pci, ATH12K_MHI_POWER_OFF);
+
ath12k_mhi_set_state(ab_pci, ATH12K_MHI_DEINIT);
}
@@ -668,3 +652,8 @@ void ath12k_mhi_resume(struct ath12k_pci *ab_pci)
{
ath12k_mhi_set_state(ab_pci, ATH12K_MHI_RESUME);
}
+
+void ath12k_mhi_coredump(struct mhi_controller *mhi_ctrl, bool in_panic)
+{
+ mhi_download_rddm_image(mhi_ctrl, in_panic);
+}
generated by cgit (git 2.34.1) at 2025-07-10 10:20:03 +0000