// SPDX-License-Identifier: GPL-2.0 /* * Microsemi Switchtec(tm) PCIe Management Driver * Copyright (c) 2017, Microsemi Corporation */ #include <linux/switchtec.h> #include <linux/switchtec_ioctl.h> #include <linux/interrupt.h> #include <linux/module.h> #include <linux/fs.h> #include <linux/uaccess.h> #include <linux/poll.h> #include <linux/wait.h> #include <linux/io-64-nonatomic-lo-hi.h> #include <linux/nospec.h> MODULE_DESCRIPTION(…) …; MODULE_VERSION(…) …; MODULE_LICENSE(…) …; MODULE_AUTHOR(…) …; static int max_devices = …; module_param(max_devices, int, 0644); MODULE_PARM_DESC(…) …; static bool use_dma_mrpc = …; module_param(use_dma_mrpc, bool, 0644); MODULE_PARM_DESC(…) …; static int nirqs = …; module_param(nirqs, int, 0644); MODULE_PARM_DESC(…) …; static dev_t switchtec_devt; static DEFINE_IDA(switchtec_minor_ida); const struct class switchtec_class = …; EXPORT_SYMBOL_GPL(…); enum mrpc_state { … }; struct switchtec_user { … }; /* * The MMIO reads to the device_id register should always return the device ID * of the device, otherwise the firmware is probably stuck or unreachable * due to a firmware reset which clears PCI state including the BARs and Memory * Space Enable bits. */ static int is_firmware_running(struct switchtec_dev *stdev) { … } static struct switchtec_user *stuser_create(struct switchtec_dev *stdev) { … } static void stuser_free(struct kref *kref) { … } static void stuser_put(struct switchtec_user *stuser) { … } static void stuser_set_state(struct switchtec_user *stuser, enum mrpc_state state) { … } static void mrpc_complete_cmd(struct switchtec_dev *stdev); static void flush_wc_buf(struct switchtec_dev *stdev) { … } static void mrpc_cmd_submit(struct switchtec_dev *stdev) { … } static int mrpc_queue_cmd(struct switchtec_user *stuser) { … } static void mrpc_cleanup_cmd(struct switchtec_dev *stdev) { … } static void mrpc_complete_cmd(struct switchtec_dev *stdev) { … } static void mrpc_event_work(struct work_struct *work) { … } static void mrpc_error_complete_cmd(struct switchtec_dev *stdev) { … } static void mrpc_timeout_work(struct work_struct *work) { … } static ssize_t device_version_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static DEVICE_ATTR_RO(device_version); static ssize_t fw_version_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static DEVICE_ATTR_RO(fw_version); static ssize_t io_string_show(char *buf, void __iomem *attr, size_t len) { … } #define DEVICE_ATTR_SYS_INFO_STR(field) … DEVICE_ATTR_SYS_INFO_STR(…); DEVICE_ATTR_SYS_INFO_STR(…); DEVICE_ATTR_SYS_INFO_STR(…); static ssize_t component_vendor_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static DEVICE_ATTR_RO(component_vendor); static ssize_t component_id_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static DEVICE_ATTR_RO(component_id); static ssize_t component_revision_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static DEVICE_ATTR_RO(component_revision); static ssize_t partition_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static DEVICE_ATTR_RO(partition); static ssize_t partition_count_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static DEVICE_ATTR_RO(partition_count); static struct attribute *switchtec_device_attrs[] = …; ATTRIBUTE_GROUPS(…); static int switchtec_dev_open(struct inode *inode, struct file *filp) { … } static int switchtec_dev_release(struct inode *inode, struct file *filp) { … } static int lock_mutex_and_test_alive(struct switchtec_dev *stdev) { … } static ssize_t switchtec_dev_write(struct file *filp, const char __user *data, size_t size, loff_t *off) { … } static ssize_t switchtec_dev_read(struct file *filp, char __user *data, size_t size, loff_t *off) { … } static __poll_t switchtec_dev_poll(struct file *filp, poll_table *wait) { … } static int ioctl_flash_info(struct switchtec_dev *stdev, struct switchtec_ioctl_flash_info __user *uinfo) { … } static void set_fw_info_part(struct switchtec_ioctl_flash_part_info *info, struct partition_info __iomem *pi) { … } static int flash_part_info_gen3(struct switchtec_dev *stdev, struct switchtec_ioctl_flash_part_info *info) { … } static int flash_part_info_gen4(struct switchtec_dev *stdev, struct switchtec_ioctl_flash_part_info *info) { … } static int ioctl_flash_part_info(struct switchtec_dev *stdev, struct switchtec_ioctl_flash_part_info __user *uinfo) { … } static int ioctl_event_summary(struct switchtec_dev *stdev, struct switchtec_user *stuser, struct switchtec_ioctl_event_summary __user *usum, size_t size) { … } static u32 __iomem *global_ev_reg(struct switchtec_dev *stdev, size_t offset, int index) { … } static u32 __iomem *part_ev_reg(struct switchtec_dev *stdev, size_t offset, int index) { … } static u32 __iomem *pff_ev_reg(struct switchtec_dev *stdev, size_t offset, int index) { … } #define EV_GLB(i, r) … #define EV_PAR(i, r) … #define EV_PFF(i, r) … static const struct event_reg { … } event_regs[] = …; static u32 __iomem *event_hdr_addr(struct switchtec_dev *stdev, int event_id, int index) { … } static int event_ctl(struct switchtec_dev *stdev, struct switchtec_ioctl_event_ctl *ctl) { … } static int ioctl_event_ctl(struct switchtec_dev *stdev, struct switchtec_ioctl_event_ctl __user *uctl) { … } static int ioctl_pff_to_port(struct switchtec_dev *stdev, struct switchtec_ioctl_pff_port __user *up) { … } static int ioctl_port_to_pff(struct switchtec_dev *stdev, struct switchtec_ioctl_pff_port __user *up) { … } static long switchtec_dev_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) { … } static const struct file_operations switchtec_fops = …; static void link_event_work(struct work_struct *work) { … } static void check_link_state_events(struct switchtec_dev *stdev) { … } static void enable_link_state_events(struct switchtec_dev *stdev) { … } static void enable_dma_mrpc(struct switchtec_dev *stdev) { … } static void stdev_release(struct device *dev) { … } static void stdev_kill(struct switchtec_dev *stdev) { … } static struct switchtec_dev *stdev_create(struct pci_dev *pdev) { … } static int mask_event(struct switchtec_dev *stdev, int eid, int idx) { … } static int mask_all_events(struct switchtec_dev *stdev, int eid) { … } static irqreturn_t switchtec_event_isr(int irq, void *dev) { … } static irqreturn_t switchtec_dma_mrpc_isr(int irq, void *dev) { … } static int switchtec_init_isr(struct switchtec_dev *stdev) { … } static void init_pff(struct switchtec_dev *stdev) { … } static int switchtec_init_pci(struct switchtec_dev *stdev, struct pci_dev *pdev) { … } static void switchtec_exit_pci(struct switchtec_dev *stdev) { … } static int switchtec_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) { … } static void switchtec_pci_remove(struct pci_dev *pdev) { … } #define SWITCHTEC_PCI_DEVICE(device_id, gen) … static const struct pci_device_id switchtec_pci_tbl[] = …; MODULE_DEVICE_TABLE(pci, switchtec_pci_tbl); static struct pci_driver switchtec_pci_driver = …; static int __init switchtec_init(void) { … } module_init(…) …; static void __exit switchtec_exit(void) { … } module_exit(switchtec_exit);
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