// SPDX-License-Identifier: GPL-2.0 /* * configfs to configure the PCI endpoint * * Copyright (C) 2017 Texas Instruments * Author: Kishon Vijay Abraham I <[email protected]> */ #include <linux/module.h> #include <linux/idr.h> #include <linux/slab.h> #include <linux/pci-epc.h> #include <linux/pci-epf.h> #include <linux/pci-ep-cfs.h> static DEFINE_IDR(functions_idr); static DEFINE_MUTEX(functions_mutex); static struct config_group *functions_group; static struct config_group *controllers_group; struct pci_epf_group { … }; struct pci_epc_group { … }; static inline struct pci_epf_group *to_pci_epf_group(struct config_item *item) { … } static inline struct pci_epc_group *to_pci_epc_group(struct config_item *item) { … } static int pci_secondary_epc_epf_link(struct config_item *epf_item, struct config_item *epc_item) { … } static void pci_secondary_epc_epf_unlink(struct config_item *epc_item, struct config_item *epf_item) { … } static struct configfs_item_operations pci_secondary_epc_item_ops = …; static const struct config_item_type pci_secondary_epc_type = …; static struct config_group *pci_ep_cfs_add_secondary_group(struct pci_epf_group *epf_group) { … } static int pci_primary_epc_epf_link(struct config_item *epf_item, struct config_item *epc_item) { … } static void pci_primary_epc_epf_unlink(struct config_item *epc_item, struct config_item *epf_item) { … } static struct configfs_item_operations pci_primary_epc_item_ops = …; static const struct config_item_type pci_primary_epc_type = …; static struct config_group *pci_ep_cfs_add_primary_group(struct pci_epf_group *epf_group) { … } static ssize_t pci_epc_start_store(struct config_item *item, const char *page, size_t len) { … } static ssize_t pci_epc_start_show(struct config_item *item, char *page) { … } CONFIGFS_ATTR(…); static struct configfs_attribute *pci_epc_attrs[] = …; static int pci_epc_epf_link(struct config_item *epc_item, struct config_item *epf_item) { … } static void pci_epc_epf_unlink(struct config_item *epc_item, struct config_item *epf_item) { … } static struct configfs_item_operations pci_epc_item_ops = …; static const struct config_item_type pci_epc_type = …; struct config_group *pci_ep_cfs_add_epc_group(const char *name) { … } EXPORT_SYMBOL(…); void pci_ep_cfs_remove_epc_group(struct config_group *group) { … } EXPORT_SYMBOL(…); #define PCI_EPF_HEADER_R(_name) … #define PCI_EPF_HEADER_W_u32(_name) … #define PCI_EPF_HEADER_W_u16(_name) … #define PCI_EPF_HEADER_W_u8(_name) … static ssize_t pci_epf_msi_interrupts_store(struct config_item *item, const char *page, size_t len) { … } static ssize_t pci_epf_msi_interrupts_show(struct config_item *item, char *page) { … } static ssize_t pci_epf_msix_interrupts_store(struct config_item *item, const char *page, size_t len) { … } static ssize_t pci_epf_msix_interrupts_show(struct config_item *item, char *page) { … } PCI_EPF_HEADER_R(…) … PCI_EPF_HEADER_W_u16(…) … PCI_EPF_HEADER_R(…) … PCI_EPF_HEADER_W_u16(…) … PCI_EPF_HEADER_R(…) … PCI_EPF_HEADER_W_u8(…) … PCI_EPF_HEADER_R(…) … PCI_EPF_HEADER_W_u8(…) … PCI_EPF_HEADER_R(…) … PCI_EPF_HEADER_W_u8(…) … PCI_EPF_HEADER_R(…) … PCI_EPF_HEADER_W_u8(…) … PCI_EPF_HEADER_R(…) … PCI_EPF_HEADER_W_u8(…) … PCI_EPF_HEADER_R(…) … PCI_EPF_HEADER_W_u16(…) … PCI_EPF_HEADER_R(…) … PCI_EPF_HEADER_W_u16(…) … PCI_EPF_HEADER_R(…) … PCI_EPF_HEADER_W_u8(…) … CONFIGFS_ATTR(…); CONFIGFS_ATTR(…); CONFIGFS_ATTR(…); CONFIGFS_ATTR(…); CONFIGFS_ATTR(…); CONFIGFS_ATTR(…); CONFIGFS_ATTR(…); CONFIGFS_ATTR(…); CONFIGFS_ATTR(…); CONFIGFS_ATTR(…); CONFIGFS_ATTR(…); CONFIGFS_ATTR(…); static struct configfs_attribute *pci_epf_attrs[] = …; static int pci_epf_vepf_link(struct config_item *epf_pf_item, struct config_item *epf_vf_item) { … } static void pci_epf_vepf_unlink(struct config_item *epf_pf_item, struct config_item *epf_vf_item) { … } static void pci_epf_release(struct config_item *item) { … } static struct configfs_item_operations pci_epf_ops = …; static const struct config_item_type pci_epf_type = …; /** * pci_epf_type_add_cfs() - Help function drivers to expose function specific * attributes in configfs * @epf: the EPF device that has to be configured using configfs * @group: the parent configfs group (corresponding to entries in * pci_epf_device_id) * * Invoke to expose function specific attributes in configfs. * * Return: A pointer to a config_group structure or NULL if the function driver * does not have anything to expose (attributes configured by user) or if * the function driver does not implement the add_cfs() method. * * Returns an error pointer if this function is called for an unbound EPF device * or if the EPF driver add_cfs() method fails. */ static struct config_group *pci_epf_type_add_cfs(struct pci_epf *epf, struct config_group *group) { … } static void pci_ep_cfs_add_type_group(struct pci_epf_group *epf_group) { … } static void pci_epf_cfs_work(struct work_struct *work) { … } static struct config_group *pci_epf_make(struct config_group *group, const char *name) { … } static void pci_epf_drop(struct config_group *group, struct config_item *item) { … } static struct configfs_group_operations pci_epf_group_ops = …; static const struct config_item_type pci_epf_group_type = …; struct config_group *pci_ep_cfs_add_epf_group(const char *name) { … } EXPORT_SYMBOL(…); void pci_ep_cfs_remove_epf_group(struct config_group *group) { … } EXPORT_SYMBOL(…); static const struct config_item_type pci_functions_type = …; static const struct config_item_type pci_controllers_type = …; static const struct config_item_type pci_ep_type = …; static struct configfs_subsystem pci_ep_cfs_subsys = …; static int __init pci_ep_cfs_init(void) { … } module_init(…) …; static void __exit pci_ep_cfs_exit(void) { … } module_exit(pci_ep_cfs_exit); MODULE_DESCRIPTION(…) …; MODULE_AUTHOR(…) …;
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