diff options
Diffstat (limited to 'drivers/net/wireless/ath/ath12k/mhi.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath12k/mhi.c | 165 |
1 files changed, 97 insertions, 68 deletions
diff --git a/drivers/net/wireless/ath/ath12k/mhi.c b/drivers/net/wireless/ath/ath12k/mhi.c index d5441ddb374b..08f44baf182a 100644 --- a/drivers/net/wireless/ath/ath12k/mhi.c +++ b/drivers/net/wireless/ath/ath12k/mhi.c @@ -1,11 +1,12 @@ // SPDX-License-Identifier: BSD-3-Clause-Clear /* * Copyright (c) 2020-2021 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> #include <linux/pci.h> +#include <linux/firmware.h> #include "core.h" #include "debug.h" @@ -13,37 +14,12 @@ #include "pci.h" #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, @@ -109,34 +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, @@ -193,7 +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), @@ -321,6 +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)); @@ -330,12 +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, @@ -358,23 +318,60 @@ int ath12k_mhi_register(struct ath12k_pci *ab_pci) { struct ath12k_base *ab = ab_pci->ab; struct mhi_controller *mhi_ctrl; + unsigned int board_id; int ret; + bool dualmac = false; mhi_ctrl = mhi_alloc_controller(); if (!mhi_ctrl) return -ENOMEM; - ath12k_core_create_firmware_path(ab, ATH12K_AMSS_FILE, - ab_pci->amss_path, - sizeof(ab_pci->amss_path)); - + ab_pci->mhi_pre_cb = MHI_CB_INVALID; ab_pci->mhi_ctrl = mhi_ctrl; mhi_ctrl->cntrl_dev = ab->dev; - mhi_ctrl->fw_image = ab_pci->amss_path; mhi_ctrl->regs = ab->mem; mhi_ctrl->reg_len = ab->mem_len; mhi_ctrl->rddm_size = ab->hw_params->rddm_size; + if (ab->hw_params->otp_board_id_register) { + board_id = + ath12k_pci_read32(ab, ab->hw_params->otp_board_id_register); + board_id = u32_get_bits(board_id, OTP_BOARD_ID_MASK); + + if (!board_id || (board_id == OTP_INVALID_BOARD_ID)) { + ath12k_dbg(ab, ATH12K_DBG_BOOT, + "failed to read board id\n"); + } else if (board_id & OTP_VALID_DUALMAC_BOARD_ID_MASK) { + dualmac = true; + ath12k_dbg(ab, ATH12K_DBG_BOOT, + "dualmac fw selected for board id: %x\n", board_id); + } + } + + if (dualmac) { + if (ab->fw.amss_dualmac_data && ab->fw.amss_dualmac_len > 0) { + /* use MHI firmware file from firmware-N.bin */ + mhi_ctrl->fw_data = ab->fw.amss_dualmac_data; + mhi_ctrl->fw_sz = ab->fw.amss_dualmac_len; + } else { + ath12k_warn(ab, "dualmac firmware IE not present in firmware-N.bin\n"); + ret = -ENOENT; + goto free_controller; + } + } else { + if (ab->fw.amss_data && ab->fw.amss_len > 0) { + /* use MHI firmware file from firmware-N.bin */ + mhi_ctrl->fw_data = ab->fw.amss_data; + mhi_ctrl->fw_sz = ab->fw.amss_len; + } else { + /* use the old separate mhi.bin MHI firmware file */ + ath12k_core_create_firmware_path(ab, ATH12K_AMSS_FILE, + ab_pci->amss_path, + sizeof(ab_pci->amss_path)); + mhi_ctrl->fw_image = ab_pci->amss_path; + } + } + ret = ath12k_mhi_get_msi(ab_pci); if (ret) { ath12k_err(ab, "failed to get msi for mhi\n"); @@ -385,7 +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; @@ -430,6 +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: @@ -461,6 +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); @@ -504,6 +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)) @@ -554,12 +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; @@ -613,9 +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); } @@ -628,3 +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); +} |