1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * MEN Chameleon Bus. 4 * 5 * Copyright (C) 2014 MEN Mikroelektronik GmbH (www.men.de) 6 * Author: Johannes Thumshirn <johannes.thumshirn@men.de> 7 */ 8 #ifndef _LINUX_MCB_H 9 #define _LINUX_MCB_H 10 11 #include <linux/mod_devicetable.h> 12 #include <linux/device.h> 13 #include <linux/irqreturn.h> 14 15 #define CHAMELEON_FILENAME_LEN 12 16 17 struct mcb_driver; 18 struct mcb_device; 19 20 /** 21 * struct mcb_bus - MEN Chameleon Bus 22 * 23 * @dev: bus device 24 * @carrier: pointer to carrier device 25 * @bus_nr: mcb bus number 26 * @get_irq: callback to get IRQ number 27 * @revision: the FPGA's revision number 28 * @model: the FPGA's model number 29 * @filename: the FPGA's name 30 */ 31 struct mcb_bus { 32 struct device dev; 33 struct device *carrier; 34 int bus_nr; 35 u8 revision; 36 char model; 37 u8 minor; 38 char name[CHAMELEON_FILENAME_LEN + 1]; 39 int (*get_irq)(struct mcb_device *dev); 40 }; 41 42 static inline struct mcb_bus *to_mcb_bus(struct device *dev) 43 { 44 return container_of(dev, struct mcb_bus, dev); 45 } 46 47 /** 48 * struct mcb_device - MEN Chameleon Bus device 49 * 50 * @dev: device in kernel representation 51 * @bus: mcb bus the device is plugged to 52 * @is_added: flag to check if device is added to bus 53 * @driver: associated mcb_driver 54 * @id: mcb device id 55 * @inst: instance in Chameleon table 56 * @group: group in Chameleon table 57 * @var: variant in Chameleon table 58 * @bar: BAR in Chameleon table 59 * @rev: revision in Chameleon table 60 * @irq: IRQ resource 61 * @memory: memory resource 62 */ 63 struct mcb_device { 64 struct device dev; 65 struct mcb_bus *bus; 66 struct mcb_driver *driver; 67 u16 id; 68 int inst; 69 int group; 70 int var; 71 int bar; 72 int rev; 73 struct resource irq; 74 struct resource mem; 75 struct device *dma_dev; 76 }; 77 78 #define to_mcb_device(__dev) container_of_const(__dev, struct mcb_device, dev) 79 80 /** 81 * struct mcb_driver - MEN Chameleon Bus device driver 82 * 83 * @driver: device_driver 84 * @id_table: mcb id table 85 * @probe: probe callback 86 * @remove: remove callback 87 * @shutdown: shutdown callback 88 */ 89 struct mcb_driver { 90 struct device_driver driver; 91 const struct mcb_device_id *id_table; 92 int (*probe)(struct mcb_device *mdev, const struct mcb_device_id *id); 93 void (*remove)(struct mcb_device *mdev); 94 void (*shutdown)(struct mcb_device *mdev); 95 }; 96 97 #define to_mcb_driver(__drv) container_of_const(__drv, struct mcb_driver, driver) 98 99 static inline void *mcb_get_drvdata(struct mcb_device *dev) 100 { 101 return dev_get_drvdata(&dev->dev); 102 } 103 104 static inline void mcb_set_drvdata(struct mcb_device *dev, void *data) 105 { 106 dev_set_drvdata(&dev->dev, data); 107 } 108 109 extern int __must_check __mcb_register_driver(struct mcb_driver *drv, 110 struct module *owner, 111 const char *mod_name); 112 #define mcb_register_driver(driver) \ 113 __mcb_register_driver(driver, THIS_MODULE, KBUILD_MODNAME) 114 extern void mcb_unregister_driver(struct mcb_driver *driver); 115 #define module_mcb_driver(__mcb_driver) \ 116 module_driver(__mcb_driver, mcb_register_driver, mcb_unregister_driver) 117 extern void mcb_bus_add_devices(const struct mcb_bus *bus); 118 extern int mcb_device_register(struct mcb_bus *bus, struct mcb_device *dev); 119 extern struct mcb_bus *mcb_alloc_bus(struct device *carrier); 120 extern struct mcb_bus *mcb_bus_get(struct mcb_bus *bus); 121 extern void mcb_bus_put(struct mcb_bus *bus); 122 extern struct mcb_device *mcb_alloc_dev(struct mcb_bus *bus); 123 extern void mcb_free_dev(struct mcb_device *dev); 124 extern void mcb_release_bus(struct mcb_bus *bus); 125 extern struct resource *mcb_request_mem(struct mcb_device *dev, 126 const char *name); 127 extern void mcb_release_mem(struct resource *mem); 128 extern int mcb_get_irq(struct mcb_device *dev); 129 extern struct resource *mcb_get_resource(struct mcb_device *dev, 130 unsigned int type); 131 132 #endif /* _LINUX_MCB_H */ 133
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