// SPDX-License-Identifier: GPL-2.0+ /* * The Huawei Cache Coherence System (HCCS) is a multi-chip interconnection * bus protocol. * * Copyright (c) 2023 Hisilicon Limited. * Author: Huisong Li <[email protected]> * * HCCS driver for Kunpeng SoC provides the following features: * - Retrieve the following information about each port: * - port type * - lane mode * - enable * - current lane mode * - link finite state machine * - lane mask * - CRC error count * * - Retrieve the following information about all the ports on the chip or * the die: * - if all enabled ports are in linked * - if all linked ports are in full lane * - CRC error count sum */ #include <linux/acpi.h> #include <linux/iopoll.h> #include <linux/platform_device.h> #include <linux/sysfs.h> #include <acpi/pcc.h> #include "kunpeng_hccs.h" /* * Arbitrary retries in case the remote processor is slow to respond * to PCC commands */ #define HCCS_PCC_CMD_WAIT_RETRIES_NUM … #define HCCS_POLL_STATUS_TIME_INTERVAL_US … static struct hccs_port_info *kobj_to_port_info(struct kobject *k) { … } static struct hccs_die_info *kobj_to_die_info(struct kobject *k) { … } static struct hccs_chip_info *kobj_to_chip_info(struct kobject *k) { … } struct hccs_register_ctx { … }; static acpi_status hccs_get_register_cb(struct acpi_resource *ares, void *context) { … } static int hccs_get_pcc_chan_id(struct hccs_dev *hdev) { … } static void hccs_chan_tx_done(struct mbox_client *cl, void *msg, int ret) { … } static void hccs_pcc_rx_callback(struct mbox_client *cl, void *mssg) { … } static void hccs_unregister_pcc_channel(struct hccs_dev *hdev) { … } static int hccs_register_pcc_channel(struct hccs_dev *hdev) { … } static int hccs_wait_cmd_complete_by_poll(struct hccs_dev *hdev) { … } static int hccs_wait_cmd_complete_by_irq(struct hccs_dev *hdev) { … } static inline void hccs_fill_pcc_shared_mem_region(struct hccs_dev *hdev, u8 cmd, struct hccs_desc *desc, void __iomem *comm_space, u16 space_size) { … } static inline void hccs_fill_ext_pcc_shared_mem_region(struct hccs_dev *hdev, u8 cmd, struct hccs_desc *desc, void __iomem *comm_space, u16 space_size) { … } static int hccs_pcc_cmd_send(struct hccs_dev *hdev, u8 cmd, struct hccs_desc *desc) { … } static void hccs_init_req_desc(struct hccs_desc *desc) { … } static int hccs_get_dev_caps(struct hccs_dev *hdev) { … } static int hccs_query_chip_num_on_platform(struct hccs_dev *hdev) { … } static int hccs_get_chip_info(struct hccs_dev *hdev, struct hccs_chip_info *chip) { … } static int hccs_query_chip_info_on_platform(struct hccs_dev *hdev) { … } static int hccs_query_die_info_on_chip(struct hccs_dev *hdev, u8 chip_id, u8 die_idx, struct hccs_die_info *die) { … } static int hccs_query_all_die_info_on_platform(struct hccs_dev *hdev) { … } static int hccs_get_bd_info(struct hccs_dev *hdev, u8 opcode, struct hccs_desc *desc, void *buf, size_t buf_len, struct hccs_rsp_head *rsp_head) { … } static int hccs_get_all_port_attr(struct hccs_dev *hdev, struct hccs_die_info *die, struct hccs_port_attr *attrs, u16 size) { … } static int hccs_get_all_port_info_on_die(struct hccs_dev *hdev, struct hccs_die_info *die) { … } static int hccs_query_all_port_info_on_platform(struct hccs_dev *hdev) { … } static int hccs_get_hw_info(struct hccs_dev *hdev) { … } static int hccs_query_port_link_status(struct hccs_dev *hdev, const struct hccs_port_info *port, struct hccs_link_status *link_status) { … } static int hccs_query_port_crc_err_cnt(struct hccs_dev *hdev, const struct hccs_port_info *port, u64 *crc_err_cnt) { … } static int hccs_get_die_all_link_status(struct hccs_dev *hdev, const struct hccs_die_info *die, u8 *all_linked) { … } static int hccs_get_die_all_port_lane_status(struct hccs_dev *hdev, const struct hccs_die_info *die, u8 *full_lane) { … } static int hccs_get_die_total_crc_err_cnt(struct hccs_dev *hdev, const struct hccs_die_info *die, u64 *total_crc_err_cnt) { … } static ssize_t hccs_show(struct kobject *k, struct attribute *attr, char *buf) { … } static const struct sysfs_ops hccs_comm_ops = …; static ssize_t type_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) { … } static struct kobj_attribute hccs_type_attr = …; static ssize_t lane_mode_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) { … } static struct kobj_attribute lane_mode_attr = …; static ssize_t enable_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) { … } static struct kobj_attribute port_enable_attr = …; static ssize_t cur_lane_num_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) { … } static struct kobj_attribute cur_lane_num_attr = …; static ssize_t link_fsm_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) { … } static struct kobj_attribute link_fsm_attr = …; static ssize_t lane_mask_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) { … } static struct kobj_attribute lane_mask_attr = …; static ssize_t crc_err_cnt_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) { … } static struct kobj_attribute crc_err_cnt_attr = …; static struct attribute *hccs_port_default_attrs[] = …; ATTRIBUTE_GROUPS(…); static const struct kobj_type hccs_port_type = …; static ssize_t all_linked_on_die_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) { … } static struct kobj_attribute all_linked_on_die_attr = …; static ssize_t linked_full_lane_on_die_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) { … } static struct kobj_attribute linked_full_lane_on_die_attr = …; static ssize_t crc_err_cnt_sum_on_die_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) { … } static struct kobj_attribute crc_err_cnt_sum_on_die_attr = …; static struct attribute *hccs_die_default_attrs[] = …; ATTRIBUTE_GROUPS(…); static const struct kobj_type hccs_die_type = …; static ssize_t all_linked_on_chip_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) { … } static struct kobj_attribute all_linked_on_chip_attr = …; static ssize_t linked_full_lane_on_chip_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) { … } static struct kobj_attribute linked_full_lane_on_chip_attr = …; static ssize_t crc_err_cnt_sum_on_chip_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) { … } static struct kobj_attribute crc_err_cnt_sum_on_chip_attr = …; static struct attribute *hccs_chip_default_attrs[] = …; ATTRIBUTE_GROUPS(…); static const struct kobj_type hccs_chip_type = …; static void hccs_remove_die_dir(struct hccs_die_info *die) { … } static void hccs_remove_chip_dir(struct hccs_chip_info *chip) { … } static void hccs_remove_topo_dirs(struct hccs_dev *hdev) { … } static int hccs_create_hccs_dir(struct hccs_dev *hdev, struct hccs_die_info *die, struct hccs_port_info *port) { … } static int hccs_create_die_dir(struct hccs_dev *hdev, struct hccs_chip_info *chip, struct hccs_die_info *die) { … } static int hccs_create_chip_dir(struct hccs_dev *hdev, struct hccs_chip_info *chip) { … } static int hccs_create_topo_dirs(struct hccs_dev *hdev) { … } static int hccs_probe(struct platform_device *pdev) { … } static void hccs_remove(struct platform_device *pdev) { … } static const struct hccs_verspecific_data hisi04b1_verspec_data = …; static const struct hccs_verspecific_data hisi04b2_verspec_data = …; static const struct acpi_device_id hccs_acpi_match[] = …; MODULE_DEVICE_TABLE(acpi, hccs_acpi_match); static struct platform_driver hccs_driver = …; module_platform_driver(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …; MODULE_AUTHOR(…) …;
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