p@2550: /** p@2550: Network Driver for Beckhoff CCAT communication controller p@2550: Copyright (C) 2014 Beckhoff Automation GmbH p@2550: Author: Patrick Bruenn p@2550: p@2550: This program is free software; you can redistribute it and/or modify p@2550: it under the terms of the GNU General Public License as published by p@2550: the Free Software Foundation; either version 2 of the License, or p@2550: (at your option) any later version. p@2550: p@2550: This program is distributed in the hope that it will be useful, p@2550: but WITHOUT ANY WARRANTY; without even the implied warranty of p@2550: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the p@2550: GNU General Public License for more details. p@2550: p@2550: You should have received a copy of the GNU General Public License along p@2550: with this program; if not, write to the Free Software Foundation, Inc., p@2550: 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. p@2550: */ p@2550: p@2550: #ifndef _CCAT_H_ p@2550: #define _CCAT_H_ p@2550: p@2550: #include p@2636: #include p@2567: #include p@2550: #include p@2550: #include p@2550: #include "../ecdev.h" p@2550: p@2550: #define DRV_EXTRAVERSION "-ec" p@2654: #define DRV_VERSION "0.15" DRV_EXTRAVERSION p@2550: #define DRV_DESCRIPTION "Beckhoff CCAT Ethernet/EtherCAT Network Driver" p@2550: p@2551: #undef pr_fmt p@2551: #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt p@2551: p@2638: extern const struct ccat_driver eth_eim_driver; p@2638: extern const struct ccat_driver eth_dma_driver; fp@2684: #ifdef CONFIG_GPIO p@2638: extern const struct ccat_driver gpio_driver; fp@2684: #endif p@2638: extern const struct ccat_driver sram_driver; p@2638: extern const struct ccat_driver update_driver; p@2636: fp@2684: p@2550: /** p@2569: * CCAT function type identifiers (u16) p@2569: */ p@2569: enum ccat_info_t { p@2569: CCATINFO_NOTUSED = 0, p@2636: CCATINFO_ETHERCAT_NODMA = 0x3, p@2636: CCATINFO_GPIO = 0xd, p@2569: CCATINFO_EPCS_PROM = 0xf, p@2569: CCATINFO_ETHERCAT_MASTER_DMA = 0x14, p@2636: CCATINFO_SRAM = 0x16, p@2636: }; p@2636: p@2636: struct ccat_cdev { p@2636: atomic_t in_use; p@2636: void __iomem *ioaddr; p@2636: size_t iosize; p@2636: dev_t dev; p@2636: struct cdev cdev; p@2636: struct ccat_class *class; p@2569: }; p@2569: p@2569: /** p@2636: * struct cdev_buffer p@2636: * @ccdev: referenced character device p@2636: * @data: buffer used for write operations p@2636: * @size: number of bytes written to the data buffer p@2550: */ p@2636: struct cdev_buffer { p@2636: struct ccat_cdev *ccdev; p@2636: size_t size; p@2636: char data[]; p@2550: }; p@2550: p@2636: extern int ccat_cdev_open(struct inode *const i, struct file *const f); p@2636: extern int ccat_cdev_release(struct inode *const i, struct file *const f); p@2550: p@2550: /** p@2550: * struct ccat_device - CCAT device representation p@2550: * @pdev: pointer to the pci object allocated by the kernel p@2636: * @bar_0: holding information about PCI BAR 0 p@2636: * @bar_2: holding information about PCI BAR 2 (optional) p@2636: * @functions: list of available (driver loaded) FPGA functions p@2550: * p@2550: * One instance of a ccat_device should represent a physical CCAT. Since p@2636: * a CCAT is implemented as FPGA the available functions can vary. p@2550: */ p@2550: struct ccat_device { p@2636: void *pdev; p@2636: void __iomem *bar_0; p@2636: void __iomem *bar_2; p@2636: struct list_head functions; p@2550: }; p@2550: p@2573: struct ccat_info_block { p@2569: u16 type; p@2569: u16 rev; p@2569: union { p@2569: u32 config; p@2636: u8 num_gpios; p@2636: struct { p@2636: u16 tx_size; p@2636: u16 rx_size; p@2636: }; p@2569: struct { p@2569: u8 tx_dma_chan; p@2569: u8 rx_dma_chan; p@2569: }; p@2636: struct { p@2636: u8 sram_width; p@2636: u8 sram_size; p@2636: u16 reserved; p@2636: }; p@2569: }; p@2569: u32 addr; p@2569: u32 size; p@2569: }; p@2569: p@2636: struct ccat_function { p@2636: const struct ccat_driver *drv; p@2636: struct ccat_device *ccat; p@2569: struct ccat_info_block info; p@2636: struct list_head list; p@2636: void *private_data; p@2550: }; p@2550: p@2636: struct ccat_class { p@2636: dev_t dev; p@2636: struct class *class; p@2636: atomic_t instances; p@2636: const unsigned count; p@2636: struct ccat_cdev *devices; p@2636: const char *name; p@2636: struct file_operations fops; p@2573: }; p@2573: p@2636: extern void ccat_cdev_remove(struct ccat_function *func); p@2636: extern int ccat_cdev_probe(struct ccat_function *func, p@2636: struct ccat_class *cdev_class, size_t iosize); p@2636: p@2636: /** p@2636: * struct ccat_driver - CCAT FPGA function p@2636: * @probe: add device instance p@2636: * @remove: remove device instance p@2636: * @type: type of the FPGA function supported by this driver p@2636: * @cdev_class: if not NULL that driver supports ccat_class_init()/_exit() p@2636: */ p@2636: struct ccat_driver { p@2636: int (*probe) (struct ccat_function * func); p@2636: void (*remove) (struct ccat_function * drv); p@2636: enum ccat_info_t type; p@2636: struct ccat_class *cdev_class; p@2569: }; p@2569: p@2550: #endif /* #ifndef _CCAT_H_ */