diff options
Diffstat (limited to 'drivers/net/wireless/ath/ath11k/mhi.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath11k/mhi.c | 108 |
1 files changed, 39 insertions, 69 deletions
diff --git a/drivers/net/wireless/ath/ath11k/mhi.c b/drivers/net/wireless/ath/ath11k/mhi.c index 6835c14b82cc..acd76e9392d3 100644 --- a/drivers/net/wireless/ath/ath11k/mhi.c +++ b/drivers/net/wireless/ath/ath11k/mhi.c @@ -1,7 +1,7 @@ // SPDX-License-Identifier: BSD-3-Clause-Clear /* * Copyright (c) 2020 The Linux Foundation. All rights reserved. - * Copyright (c) 2021-2023 Qualcomm Innovation Center, Inc. All rights reserved. + * Copyright (c) 2021-2025 Qualcomm Innovation Center, Inc. All rights reserved. */ #include <linux/msi.h> @@ -19,36 +19,9 @@ #define MHI_TIMEOUT_DEFAULT_MS 20000 #define RDDM_DUMP_SIZE 0x420000 +#define MHI_CB_INVALID 0xff -static struct mhi_channel_config ath11k_mhi_channels_qca6390[] = { - { - .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, - }, +static const struct mhi_channel_config ath11k_mhi_channels_qca6390[] = { { .num = 20, .name = "IPCR", @@ -102,46 +75,18 @@ static struct mhi_event_config ath11k_mhi_events_qca6390[] = { }, }; -static struct mhi_controller_config ath11k_mhi_config_qca6390 = { +static const struct mhi_controller_config ath11k_mhi_config_qca6390 = { .max_channels = 128, .timeout_ms = 2000, .use_bounce_buf = false, - .buf_len = 0, + .buf_len = 8192, .num_channels = ARRAY_SIZE(ath11k_mhi_channels_qca6390), .ch_cfg = ath11k_mhi_channels_qca6390, .num_events = ARRAY_SIZE(ath11k_mhi_events_qca6390), .event_cfg = ath11k_mhi_events_qca6390, }; -static struct mhi_channel_config ath11k_mhi_channels_qcn9074[] = { - { - .num = 0, - .name = "LOOPBACK", - .num_elements = 32, - .event_ring = 1, - .dir = DMA_TO_DEVICE, - .ee_mask = 0x14, - .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 = 0x14, - .pollcfg = 0, - .doorbell = MHI_DB_BRST_DISABLE, - .lpm_notify = false, - .offload_channel = false, - .doorbell_mode_switch = false, - .auto_queue = false, - }, +static const struct mhi_channel_config ath11k_mhi_channels_qcn9074[] = { { .num = 20, .name = "IPCR", @@ -195,7 +140,7 @@ static struct mhi_event_config ath11k_mhi_events_qcn9074[] = { }, }; -static struct mhi_controller_config ath11k_mhi_config_qcn9074 = { +static const struct mhi_controller_config ath11k_mhi_config_qcn9074 = { .max_channels = 30, .timeout_ms = 10000, .use_bounce_buf = false, @@ -214,9 +159,8 @@ void ath11k_mhi_set_mhictrl_reset(struct ath11k_base *ab) ath11k_dbg(ab, ATH11K_DBG_PCI, "mhistatus 0x%x\n", val); - /* Observed on QCA6390 that after SOC_GLOBAL_RESET, MHISTATUS - * has SYSERR bit set and thus need to set MHICTRL_RESET - * to clear SYSERR. + /* After SOC_GLOBAL_RESET, MHISTATUS may still have SYSERR bit set + * and thus need to set MHICTRL_RESET to clear SYSERR. */ ath11k_pcic_write32(ab, MHICTRL, MHICTRL_RESET_MASK); @@ -325,6 +269,7 @@ static void ath11k_mhi_op_status_cb(struct mhi_controller *mhi_cntrl, enum mhi_callback cb) { struct ath11k_base *ab = dev_get_drvdata(mhi_cntrl->cntrl_dev); + struct ath11k_pci *ab_pci = ath11k_pci_priv(ab); ath11k_dbg(ab, ATH11K_DBG_BOOT, "notify status reason %s\n", ath11k_mhi_op_callback_to_str(cb)); @@ -335,12 +280,21 @@ static void ath11k_mhi_op_status_cb(struct mhi_controller *mhi_cntrl, break; case MHI_CB_EE_RDDM: ath11k_warn(ab, "firmware crashed: MHI_CB_EE_RDDM\n"); + if (ab_pci->mhi_pre_cb == MHI_CB_EE_RDDM) { + ath11k_dbg(ab, ATH11K_DBG_BOOT, + "do not queue again for consecutive RDDM event\n"); + break; + } + if (!(test_bit(ATH11K_FLAG_UNREGISTERING, &ab->dev_flags))) queue_work(ab->workqueue_aux, &ab->reset_work); + break; default: break; } + + ab_pci->mhi_pre_cb = cb; } static int ath11k_mhi_op_read_reg(struct mhi_controller *mhi_cntrl, @@ -384,7 +338,7 @@ int ath11k_mhi_register(struct ath11k_pci *ab_pci) { struct ath11k_base *ab = ab_pci->ab; struct mhi_controller *mhi_ctrl; - struct mhi_controller_config *ath11k_mhi_config; + const struct mhi_controller_config *ath11k_mhi_config; int ret; mhi_ctrl = mhi_alloc_controller(); @@ -423,7 +377,7 @@ int ath11k_mhi_register(struct ath11k_pci *ab_pci) goto free_controller; } else { mhi_ctrl->iova_start = 0; - mhi_ctrl->iova_stop = 0xFFFFFFFF; + mhi_ctrl->iova_stop = ab_pci->dma_mask; } mhi_ctrl->rddm_size = RDDM_DUMP_SIZE; @@ -443,6 +397,8 @@ int ath11k_mhi_register(struct ath11k_pci *ab_pci) case ATH11K_HW_QCA6390_HW20: case ATH11K_HW_WCN6855_HW20: case ATH11K_HW_WCN6855_HW21: + case ATH11K_HW_QCA2066_HW21: + case ATH11K_HW_QCA6698AQ_HW21: ath11k_mhi_config = &ath11k_mhi_config_qca6390; break; default: @@ -452,6 +408,7 @@ int ath11k_mhi_register(struct ath11k_pci *ab_pci) goto free_controller; } + ab_pci->mhi_pre_cb = MHI_CB_INVALID; ret = mhi_register_controller(mhi_ctrl, ath11k_mhi_config); if (ret) { ath11k_err(ab, "failed to register to mhi bus, err = %d\n", ret); @@ -497,9 +454,17 @@ int ath11k_mhi_start(struct ath11k_pci *ab_pci) return 0; } -void ath11k_mhi_stop(struct ath11k_pci *ab_pci) +void ath11k_mhi_stop(struct ath11k_pci *ab_pci, bool is_suspend) { - mhi_power_down(ab_pci->mhi_ctrl, true); + /* During suspend we need to use mhi_power_down_keep_dev() + * workaround, otherwise ath11k_core_resume() will timeout + * during resume. + */ + if (is_suspend) + mhi_power_down_keep_dev(ab_pci->mhi_ctrl, true); + else + mhi_power_down(ab_pci->mhi_ctrl, true); + mhi_unprepare_after_power_down(ab_pci->mhi_ctrl); } @@ -534,3 +499,8 @@ int ath11k_mhi_resume(struct ath11k_pci *ab_pci) return 0; } + +void ath11k_mhi_coredump(struct mhi_controller *mhi_ctrl, bool in_panic) +{ + mhi_download_rddm_image(mhi_ctrl, in_panic); +} |