// SPDX-License-Identifier: GPL-2.0-or-later /* * MHI PCI driver - MHI over PCI controller driver * * This module is a generic driver for registering MHI-over-PCI devices, * such as PCIe QCOM modems. * * Copyright (C) 2020 Linaro Ltd <[email protected]> */ #include <linux/delay.h> #include <linux/device.h> #include <linux/mhi.h> #include <linux/module.h> #include <linux/pci.h> #include <linux/pm_runtime.h> #include <linux/timer.h> #include <linux/workqueue.h> #define MHI_PCI_DEFAULT_BAR_NUM … #define MHI_POST_RESET_DELAY_MS … #define HEALTH_CHECK_PERIOD … /* PCI VID definitions */ #define PCI_VENDOR_ID_THALES … #define PCI_VENDOR_ID_QUECTEL … #define MHI_EDL_DB … #define MHI_EDL_COOKIE … /** * struct mhi_pci_dev_info - MHI PCI device specific information * @config: MHI controller configuration * @name: name of the PCI module * @fw: firmware path (if any) * @edl: emergency download mode firmware path (if any) * @edl_trigger: capable of triggering EDL mode in the device (if supported) * @bar_num: PCI base address register to use for MHI MMIO register space * @dma_data_width: DMA transfer word size (32 or 64 bits) * @mru_default: default MRU size for MBIM network packets * @sideband_wake: Devices using dedicated sideband GPIO for wakeup instead * of inband wake support (such as sdx24) */ struct mhi_pci_dev_info { … }; #define MHI_CHANNEL_CONFIG_UL(ch_num, ch_name, el_count, ev_ring) … \ #define MHI_CHANNEL_CONFIG_DL(ch_num, ch_name, el_count, ev_ring) … #define MHI_CHANNEL_CONFIG_DL_AUTOQUEUE(ch_num, ch_name, el_count, ev_ring) … #define MHI_EVENT_CONFIG_CTRL(ev_ring, el_count) … #define MHI_CHANNEL_CONFIG_HW_UL(ch_num, ch_name, el_count, ev_ring) … \ #define MHI_CHANNEL_CONFIG_HW_DL(ch_num, ch_name, el_count, ev_ring) … #define MHI_CHANNEL_CONFIG_UL_SBL(ch_num, ch_name, el_count, ev_ring) … \ #define MHI_CHANNEL_CONFIG_DL_SBL(ch_num, ch_name, el_count, ev_ring) … #define MHI_CHANNEL_CONFIG_UL_FP(ch_num, ch_name, el_count, ev_ring) … \ #define MHI_CHANNEL_CONFIG_DL_FP(ch_num, ch_name, el_count, ev_ring) … #define MHI_EVENT_CONFIG_DATA(ev_ring, el_count) … #define MHI_EVENT_CONFIG_SW_DATA(ev_ring, el_count) … #define MHI_EVENT_CONFIG_HW_DATA(ev_ring, el_count, ch_num) … static const struct mhi_channel_config modem_qcom_v1_mhi_channels[] = …; static struct mhi_event_config modem_qcom_v1_mhi_events[] = …; static const struct mhi_controller_config modem_qcom_v2_mhiv_config = …; static const struct mhi_controller_config modem_qcom_v1_mhiv_config = …; static const struct mhi_pci_dev_info mhi_qcom_sdx75_info = …; static const struct mhi_pci_dev_info mhi_qcom_sdx65_info = …; static const struct mhi_pci_dev_info mhi_qcom_sdx55_info = …; static const struct mhi_pci_dev_info mhi_qcom_sdx24_info = …; static const struct mhi_channel_config mhi_quectel_em1xx_channels[] = …; static struct mhi_event_config mhi_quectel_em1xx_events[] = …; static const struct mhi_controller_config modem_quectel_em1xx_config = …; static const struct mhi_pci_dev_info mhi_quectel_em1xx_info = …; static const struct mhi_pci_dev_info mhi_quectel_rm5xx_info = …; static const struct mhi_channel_config mhi_foxconn_sdx55_channels[] = …; static struct mhi_event_config mhi_foxconn_sdx55_events[] = …; static const struct mhi_controller_config modem_foxconn_sdx55_config = …; static const struct mhi_controller_config modem_foxconn_sdx72_config = …; static const struct mhi_pci_dev_info mhi_foxconn_sdx55_info = …; static const struct mhi_pci_dev_info mhi_foxconn_t99w175_info = …; static const struct mhi_pci_dev_info mhi_foxconn_dw5930e_info = …; static const struct mhi_pci_dev_info mhi_foxconn_t99w368_info = …; static const struct mhi_pci_dev_info mhi_foxconn_t99w373_info = …; static const struct mhi_pci_dev_info mhi_foxconn_t99w510_info = …; static const struct mhi_pci_dev_info mhi_foxconn_dw5932e_info = …; static const struct mhi_pci_dev_info mhi_foxconn_t99w515_info = …; static const struct mhi_pci_dev_info mhi_foxconn_dw5934e_info = …; static const struct mhi_channel_config mhi_mv3x_channels[] = …; static struct mhi_event_config mhi_mv3x_events[] = …; static const struct mhi_controller_config modem_mv3x_config = …; static const struct mhi_pci_dev_info mhi_mv31_info = …; static const struct mhi_pci_dev_info mhi_mv32_info = …; static const struct mhi_channel_config mhi_sierra_em919x_channels[] = …; static struct mhi_event_config modem_sierra_em919x_mhi_events[] = …; static const struct mhi_controller_config modem_sierra_em919x_config = …; static const struct mhi_pci_dev_info mhi_sierra_em919x_info = …; static const struct mhi_channel_config mhi_telit_fn980_hw_v1_channels[] = …; static struct mhi_event_config mhi_telit_fn980_hw_v1_events[] = …; static const struct mhi_controller_config modem_telit_fn980_hw_v1_config = …; static const struct mhi_pci_dev_info mhi_telit_fn980_hw_v1_info = …; static const struct mhi_channel_config mhi_telit_fn990_channels[] = …; static struct mhi_event_config mhi_telit_fn990_events[] = …; static const struct mhi_controller_config modem_telit_fn990_config = …; static const struct mhi_pci_dev_info mhi_telit_fn990_info = …; /* Keep the list sorted based on the PID. New VID should be added as the last entry */ static const struct pci_device_id mhi_pci_id_table[] = …; MODULE_DEVICE_TABLE(pci, mhi_pci_id_table); enum mhi_pci_device_status { … }; struct mhi_pci_device { … }; static int mhi_pci_read_reg(struct mhi_controller *mhi_cntrl, void __iomem *addr, u32 *out) { … } static void mhi_pci_write_reg(struct mhi_controller *mhi_cntrl, void __iomem *addr, u32 val) { … } static void mhi_pci_status_cb(struct mhi_controller *mhi_cntrl, enum mhi_callback cb) { … } static void mhi_pci_wake_get_nop(struct mhi_controller *mhi_cntrl, bool force) { … } static void mhi_pci_wake_put_nop(struct mhi_controller *mhi_cntrl, bool override) { … } static void mhi_pci_wake_toggle_nop(struct mhi_controller *mhi_cntrl) { … } static bool mhi_pci_is_alive(struct mhi_controller *mhi_cntrl) { … } static int mhi_pci_claim(struct mhi_controller *mhi_cntrl, unsigned int bar_num, u64 dma_mask) { … } static int mhi_pci_get_irqs(struct mhi_controller *mhi_cntrl, const struct mhi_controller_config *mhi_cntrl_config) { … } static int mhi_pci_runtime_get(struct mhi_controller *mhi_cntrl) { … } static void mhi_pci_runtime_put(struct mhi_controller *mhi_cntrl) { … } static void mhi_pci_recovery_work(struct work_struct *work) { … } static void health_check(struct timer_list *t) { … } static int mhi_pci_generic_edl_trigger(struct mhi_controller *mhi_cntrl) { … } static int mhi_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) { … } static void mhi_pci_remove(struct pci_dev *pdev) { … } static void mhi_pci_shutdown(struct pci_dev *pdev) { … } static void mhi_pci_reset_prepare(struct pci_dev *pdev) { … } static void mhi_pci_reset_done(struct pci_dev *pdev) { … } static pci_ers_result_t mhi_pci_error_detected(struct pci_dev *pdev, pci_channel_state_t state) { … } static pci_ers_result_t mhi_pci_slot_reset(struct pci_dev *pdev) { … } static void mhi_pci_io_resume(struct pci_dev *pdev) { … } static const struct pci_error_handlers mhi_pci_err_handler = …; static int __maybe_unused mhi_pci_runtime_suspend(struct device *dev) { … } static int __maybe_unused mhi_pci_runtime_resume(struct device *dev) { … } static int __maybe_unused mhi_pci_suspend(struct device *dev) { … } static int __maybe_unused mhi_pci_resume(struct device *dev) { … } static int __maybe_unused mhi_pci_freeze(struct device *dev) { … } static int __maybe_unused mhi_pci_restore(struct device *dev) { … } static const struct dev_pm_ops mhi_pci_pm_ops = …; static struct pci_driver mhi_pci_driver = …; module_pci_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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