devices/ccat/netdev.c
author Florian Pose <fp@igh-essen.com>
Tue, 18 Oct 2016 10:20:47 +0200
branchstable-1.5
changeset 2662 a1079c6242a5
parent 2654 b3f6b3e5ef29
child 2695 ad58465e75ca
permissions -rw-r--r--
Support changed sock_create_kern() interface from Linux 4.2.
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/**
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    Network Driver for Beckhoff CCAT communication controller
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    Copyright (C) 2014 - 2015  Beckhoff Automation GmbH
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    Author: Patrick Bruenn <p.bruenn@beckhoff.com>
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    This program is free software; you can redistribute it and/or modify
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    it under the terms of the GNU General Public License as published by
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    the Free Software Foundation; either version 2 of the License, or
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    (at your option) any later version.
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    This program is distributed in the hope that it will be useful,
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    but WITHOUT ANY WARRANTY; without even the implied warranty of
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    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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    GNU General Public License for more details.
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    You should have received a copy of the GNU General Public License along
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    with this program; if not, write to the Free Software Foundation, Inc.,
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    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include <linux/etherdevice.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/netdevice.h>
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#ifdef CONFIG_PCI
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#include <asm/dma.h>
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#else
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#define free_dma(X)
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#define request_dma(X, Y) ((int)(-EINVAL))
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#endif
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#include "module.h"
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/**
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 * EtherCAT frame to enable forwarding on EtherCAT Terminals
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 */
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static const u8 frameForwardEthernetFrames[] = {
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	0x01, 0x01, 0x05, 0x01, 0x00, 0x00,
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	0x00, 0x1b, 0x21, 0x36, 0x1b, 0xce,
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	0x88, 0xa4, 0x0e, 0x10,
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	0x08,
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	0x00,
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	0x00, 0x00,
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	0x00, 0x01,
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	0x02, 0x00,
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	0x00, 0x00,
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	0x00, 0x00,
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	0x00, 0x00
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};
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#define FIFO_LENGTH 64
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#define POLL_TIME ktime_set(0, 50 * NSEC_PER_USEC)
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#define CCAT_ALIGNMENT ((size_t)(128 * 1024))
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#define CCAT_ALIGN_CHANNEL(x, c) ((typeof(x))(ALIGN((size_t)((x) + ((c) * CCAT_ALIGNMENT)), CCAT_ALIGNMENT)))
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struct ccat_dma_frame_hdr {
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	__le32 reserved1;
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	__le32 rx_flags;
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#define CCAT_FRAME_RECEIVED 0x1
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	__le16 length;
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	__le16 reserved3;
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	__le32 tx_flags;
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#define CCAT_FRAME_SENT 0x1
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	__le64 timestamp;
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};
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struct ccat_eim_frame_hdr {
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	__le16 length;
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	__le16 reserved3;
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	__le32 tx_flags;
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	__le64 timestamp;
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};
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struct ccat_eth_frame {
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	u8 placeholder[0x800];
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};
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struct ccat_dma_frame {
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	struct ccat_dma_frame_hdr hdr;
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	u8 data[sizeof(struct ccat_eth_frame) -
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		sizeof(struct ccat_dma_frame_hdr)];
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};
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struct ccat_eim_frame {
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	struct ccat_eim_frame_hdr hdr;
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	u8 data[sizeof(struct ccat_eth_frame) -
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		sizeof(struct ccat_eim_frame_hdr)];
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};
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#define MAX_PAYLOAD_SIZE \
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	(sizeof(struct ccat_eth_frame) - max(sizeof(struct ccat_dma_frame_hdr), sizeof(struct ccat_eim_frame_hdr)))
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/**
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 * struct ccat_eth_register - CCAT register addresses in the PCI BAR
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 * @mii: address of the CCAT management interface register
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 * @mac: address of the CCAT media access control register
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 * @rx_mem: address of the CCAT register holding the RX DMA address
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 * @tx_mem: address of the CCAT register holding the TX DMA address
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 * @misc: address of a CCAT register holding miscellaneous information
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 */
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struct ccat_eth_register {
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	void __iomem *mii;
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	void __iomem *mac;
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	void __iomem *rx_mem;
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	void __iomem *tx_mem;
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	void __iomem *misc;
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};
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/**
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 * struct ccat_dma_mem - CCAT DMA channel configuration
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 * @size: number of bytes in the associated DMA memory
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 * @phys: device-viewed address(physical) of the associated DMA memory
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 * @channel: CCAT DMA channel number
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 * @dev: valid struct device pointer
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 * @base: CPU-viewed address(virtual) of the associated DMA memory
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 */
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struct ccat_dma_mem {
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	size_t size;
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	dma_addr_t phys;
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	size_t channel;
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	struct device *dev;
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	void *base;
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};
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/**
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 * struct ccat_dma/eim/mem
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 * @next: pointer to the next frame in fifo ring buffer
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 * @start: aligned CPU-viewed address(virtual) of the associated memory
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 */
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struct ccat_dma {
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	struct ccat_dma_frame *next;
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	void *start;
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};
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struct ccat_eim {
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	struct ccat_eim_frame __iomem *next;
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	void __iomem *start;
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};
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struct ccat_mem {
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	struct ccat_eth_frame *next;
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	void *start;
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};
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/**
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 * struct ccat_eth_fifo - CCAT RX or TX fifo
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 * @ops: function pointer table for dma/eim and rx/tx specific fifo functions
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 * @reg: PCI register address of this fifo
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 * @rx_bytes: number of bytes processed -> reported with ndo_get_stats64()
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 * @rx_dropped: number of dropped frames -> reported with ndo_get_stats64()
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 * @mem/dma/eim: information about the associated memory
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 */
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struct ccat_eth_fifo {
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	const struct ccat_eth_fifo_operations *ops;
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	const struct ccat_eth_frame *end;
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	void __iomem *reg;
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	atomic64_t bytes;
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	atomic64_t dropped;
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	union {
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		struct ccat_mem mem;
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		struct ccat_dma dma;
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		struct ccat_eim eim;
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	};
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};
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/**
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 * struct ccat_eth_fifo_operations
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 * @ready: callback used to test the next frames ready bit
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 * @add: callback used to add a frame to this fifo
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 * @copy_to_skb: callback used to copy from rx fifos to skbs
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 * @skb: callback used to queue skbs into tx fifos
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 */
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struct ccat_eth_fifo_operations {
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	size_t(*ready) (struct ccat_eth_fifo *);
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	void (*add) (struct ccat_eth_fifo *);
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	union {
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		void (*copy_to_skb) (struct ccat_eth_fifo *, struct sk_buff *,
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				     size_t);
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		void (*skb) (struct ccat_eth_fifo *, struct sk_buff *);
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	} queue;
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};
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/**
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 * same as: typedef struct _CCatInfoBlockOffs from CCatDefinitions.h
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 */
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struct ccat_mac_infoblock {
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	u32 reserved;
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	u32 mii;
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	u32 tx_fifo;
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	u32 mac;
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	u32 rx_mem;
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	u32 tx_mem;
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	u32 misc;
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};
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/**
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 * struct ccat_eth_priv - CCAT Ethernet/EtherCAT Master function (netdev)
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 * @func: pointer to the parent struct ccat_function
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 * @netdev: the net_device structure used by the kernel networking stack
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 * @reg: register addresses in PCI config space of the Ethernet/EtherCAT Master function
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 * @rx_fifo: fifo used for RX descriptors
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 * @tx_fifo: fifo used for TX descriptors
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 * @poll_timer: interval timer used to poll CCAT for events like link changed, rx done, tx done
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 */
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struct ccat_eth_priv {
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	struct ccat_function *func;
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	struct net_device *netdev;
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	struct ccat_eth_register reg;
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	struct ccat_eth_fifo rx_fifo;
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	struct ccat_eth_fifo tx_fifo;
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	struct hrtimer poll_timer;
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	struct ccat_dma_mem dma_mem;
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	ec_device_t *ecdev;
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	void (*carrier_off) (struct net_device * netdev);
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	 bool(*carrier_ok) (const struct net_device * netdev);
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	void (*carrier_on) (struct net_device * netdev);
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	void (*kfree_skb_any) (struct sk_buff * skb);
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	void (*receive) (struct ccat_eth_priv *, size_t);
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	void (*start_queue) (struct net_device * netdev);
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	void (*stop_queue) (struct net_device * netdev);
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	void (*unregister) (struct net_device * netdev);
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};
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struct ccat_mac_register {
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	/** MAC error register     @+0x0 */
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	u8 frame_len_err;
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	u8 rx_err;
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	u8 crc_err;
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	u8 link_lost_err;
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	u32 reserved1;
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	/** Buffer overflow errors @+0x8 */
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	u8 rx_mem_full;
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	u8 reserved2[7];
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	/** MAC frame counter      @+0x10 */
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	u32 tx_frames;
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	u32 rx_frames;
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	u64 reserved3;
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	/** MAC fifo level         @+0x20 */
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	u8 tx_fifo_level:7;
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	u8 reserved4:1;
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	u8 reserved5[7];
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	/** TX memory full error   @+0x28 */
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	u8 tx_mem_full;
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	u8 reserved6[7];
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	u64 reserved8[9];
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	/** Connection             @+0x78 */
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	u8 mii_connected;
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};
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static void fifo_set_end(struct ccat_eth_fifo *const fifo, size_t size)
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{
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	fifo->end = fifo->mem.start + size - sizeof(struct ccat_eth_frame);
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}
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static void ccat_dma_free(struct ccat_eth_priv *const priv)
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{
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	if (priv->dma_mem.base) {
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		const struct ccat_dma_mem tmp = priv->dma_mem;
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		memset(&priv->dma_mem, 0, sizeof(priv->dma_mem));
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		dma_free_coherent(tmp.dev, tmp.size, tmp.base, tmp.phys);
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		free_dma(priv->func->info.tx_dma_chan);
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		free_dma(priv->func->info.rx_dma_chan);
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	}
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}
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/**
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 * ccat_dma_init() - Initialize CCAT and host memory for DMA transfer
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 * @dma object for management data which will be initialized
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 * @channel number of the DMA channel
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 * @ioaddr of the pci bar2 configspace used to calculate the address of the pci dma configuration
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 * @dev which should be configured for DMA
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 */
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static int ccat_dma_init(struct ccat_dma_mem *const dma, size_t channel,
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			 void __iomem * const bar2,
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			 struct ccat_eth_fifo *const fifo)
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{
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	void __iomem *const ioaddr = bar2 + 0x1000 + (sizeof(u64) * channel);
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	const dma_addr_t phys = CCAT_ALIGN_CHANNEL(dma->phys, channel);
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	const u32 phys_hi = (sizeof(phys) > sizeof(u32)) ? phys >> 32 : 0;
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	fifo->dma.start = CCAT_ALIGN_CHANNEL(dma->base, channel);
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	fifo_set_end(fifo, CCAT_ALIGNMENT);
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	if (request_dma(channel, KBUILD_MODNAME)) {
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		pr_info("request dma channel %llu failed\n", (u64) channel);
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		return -EINVAL;
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	}
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	/** bit 0 enables 64 bit mode on ccat */
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	iowrite32((u32) phys | ((phys_hi) > 0), ioaddr);
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	iowrite32(phys_hi, ioaddr + 4);
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   293
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	pr_info
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	    ("DMA%llu mem initialized\n base:         0x%p\n start:        0x%p\n phys:         0x%09llx\n pci addr:     0x%01x%08x\n size:         %llu |%llx bytes.\n",
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	     (u64) channel, dma->base, fifo->dma.start, (u64) dma->phys,
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	     ioread32(ioaddr + 4), ioread32(ioaddr),
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	     (u64) dma->size, (u64) dma->size);
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	return 0;
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}
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static void ecdev_kfree_skb_any(struct sk_buff *skb)
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{
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	/* never release a skb in EtherCAT mode */
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}
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static bool ecdev_carrier_ok(const struct net_device *const netdev)
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{
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	struct ccat_eth_priv *const priv = netdev_priv(netdev);
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	return ecdev_get_link(priv->ecdev);
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}
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static void ecdev_carrier_on(struct net_device *const netdev)
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{
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	struct ccat_eth_priv *const priv = netdev_priv(netdev);
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	ecdev_set_link(priv->ecdev, 1);
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}
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static void ecdev_carrier_off(struct net_device *const netdev)
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{
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	struct ccat_eth_priv *const priv = netdev_priv(netdev);
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	ecdev_set_link(priv->ecdev, 0);
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}
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   324
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static void ecdev_nop(struct net_device *const netdev)
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{
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	/* dummy called if nothing has to be done in EtherCAT operation mode */
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}
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   329
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static void ecdev_receive_dma(struct ccat_eth_priv *const priv, size_t len)
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{
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	ecdev_receive(priv->ecdev, priv->rx_fifo.dma.next->data, len);
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   333
}
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   334
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static void ecdev_receive_eim(struct ccat_eth_priv *const priv, size_t len)
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{
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	ecdev_receive(priv->ecdev, priv->rx_fifo.eim.next->data, len);
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   338
}
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   339
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static void unregister_ecdev(struct net_device *const netdev)
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{
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	struct ccat_eth_priv *const priv = netdev_priv(netdev);
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	ecdev_close(priv->ecdev);
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	ecdev_withdraw(priv->ecdev);
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}
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   346
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static inline size_t fifo_eim_tx_ready(struct ccat_eth_fifo *const fifo)
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{
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	struct ccat_eth_priv *const priv =
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	    container_of(fifo, struct ccat_eth_priv, tx_fifo);
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	static const size_t TX_FIFO_LEVEL_OFFSET = 0x20;
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	static const u8 TX_FIFO_LEVEL_MASK = 0x3F;
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   353
	void __iomem *addr = priv->reg.mac + TX_FIFO_LEVEL_OFFSET;
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   354
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   355
	return !(ioread8(addr) & TX_FIFO_LEVEL_MASK);
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   356
}
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   357
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   358
static inline size_t fifo_eim_rx_ready(struct ccat_eth_fifo *const fifo)
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   359
{
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   360
	static const size_t OVERHEAD = sizeof(struct ccat_eim_frame_hdr);
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   361
	const size_t len = ioread16(&fifo->eim.next->hdr.length);
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   362
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   363
	return (len < OVERHEAD) ? 0 : len - OVERHEAD;
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   364
}
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   365
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   366
static void ccat_eth_fifo_inc(struct ccat_eth_fifo *fifo)
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   367
{
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   368
	if (++fifo->mem.next > fifo->end)
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   369
		fifo->mem.next = fifo->mem.start;
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   370
}
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   371
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   372
static void fifo_eim_rx_add(struct ccat_eth_fifo *const fifo)
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   373
{
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   374
	struct ccat_eim_frame __iomem *frame = fifo->eim.next;
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   375
	iowrite16(0, frame);
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   376
	wmb();
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   377
}
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   378
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   379
static void fifo_eim_tx_add(struct ccat_eth_fifo *const fifo)
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   380
{
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   381
}
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   382
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   383
#define memcpy_from_ccat(DEST, SRC, LEN) memcpy(DEST,(__force void*)(SRC), LEN)
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   384
#define memcpy_to_ccat(DEST, SRC, LEN) memcpy((__force void*)(DEST),SRC, LEN)
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diff changeset
   385
static void fifo_eim_copy_to_linear_skb(struct ccat_eth_fifo *const fifo,
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   386
					struct sk_buff *skb, const size_t len)
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   387
{
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   388
	memcpy_from_ccat(skb->data, fifo->eim.next->data, len);
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diff changeset
   389
}
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   390
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   391
static void fifo_eim_queue_skb(struct ccat_eth_fifo *const fifo,
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diff changeset
   392
			       struct sk_buff *skb)
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   393
{
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   394
	struct ccat_eim_frame __iomem *frame = fifo->eim.next;
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diff changeset
   395
	const u32 addr_and_length =
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diff changeset
   396
	    (void __iomem *)frame - (void __iomem *)fifo->eim.start;
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   397
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   398
	const __le16 length = cpu_to_le16(skb->len);
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   399
	memcpy_to_ccat(&frame->hdr.length, &length, sizeof(length));
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   400
	memcpy_to_ccat(frame->data, skb->data, skb->len);
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   401
	iowrite32(addr_and_length, fifo->reg);
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   402
}
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   403
2638
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   404
static void ccat_eth_fifo_hw_reset(struct ccat_eth_fifo *const fifo)
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   405
{
2636
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   406
	if (fifo->reg) {
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   407
		iowrite32(0, fifo->reg + 0x8);
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   408
		wmb();
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   409
	}
2638
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   410
}
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   411
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   412
static void ccat_eth_fifo_reset(struct ccat_eth_fifo *const fifo)
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   413
{
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   414
	ccat_eth_fifo_hw_reset(fifo);
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   415
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   416
	if (fifo->ops->add) {
2636
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   417
		fifo->mem.next = fifo->mem.start;
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   418
		do {
2638
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   419
			fifo->ops->add(fifo);
2636
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   420
			ccat_eth_fifo_inc(fifo);
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   421
		} while (fifo->mem.next != fifo->mem.start);
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   422
	}
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   423
}
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   424
2638
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   425
static inline size_t fifo_dma_tx_ready(struct ccat_eth_fifo *const fifo)
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   426
{
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   427
	const struct ccat_dma_frame *frame = fifo->dma.next;
2636
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   428
	return le32_to_cpu(frame->hdr.tx_flags) & CCAT_FRAME_SENT;
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   429
}
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   430
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   431
static inline size_t fifo_dma_rx_ready(struct ccat_eth_fifo *const fifo)
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   432
{
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   433
	static const size_t OVERHEAD =
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   434
	    offsetof(struct ccat_dma_frame_hdr, rx_flags);
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   435
	const struct ccat_dma_frame *const frame = fifo->dma.next;
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   436
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   437
	if (le32_to_cpu(frame->hdr.rx_flags) & CCAT_FRAME_RECEIVED) {
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   438
		const size_t len = le16_to_cpu(frame->hdr.length);
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   439
		return (len < OVERHEAD) ? 0 : len - OVERHEAD;
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   440
	}
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   441
	return 0;
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   442
}
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   443
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   444
static void ccat_eth_rx_fifo_dma_add(struct ccat_eth_fifo *const fifo)
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   445
{
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   446
	struct ccat_dma_frame *const frame = fifo->dma.next;
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   447
	const size_t offset = (void *)frame - fifo->dma.start;
2567
d70aad2f131f - use short kernel types, add empty lines after variable declaration to conform better with linux coding style
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2565
diff changeset
   448
	const u32 addr_and_length = (1 << 31) | offset;
d70aad2f131f - use short kernel types, add empty lines after variable declaration to conform better with linux coding style
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2565
diff changeset
   449
2636
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   450
	frame->hdr.rx_flags = cpu_to_le32(0);
2550
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   451
	iowrite32(addr_and_length, fifo->reg);
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   452
}
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   453
2636
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   454
static void ccat_eth_tx_fifo_dma_add_free(struct ccat_eth_fifo *const fifo)
2550
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   455
{
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   456
	/* mark frame as ready to use for tx */
2636
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   457
	fifo->dma.next->hdr.tx_flags = cpu_to_le32(CCAT_FRAME_SENT);
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   458
}
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   459
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   460
static void fifo_dma_copy_to_linear_skb(struct ccat_eth_fifo *const fifo,
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   461
					struct sk_buff *skb, const size_t len)
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   462
{
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   463
	skb_copy_to_linear_data(skb, fifo->dma.next->data, len);
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   464
}
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   465
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   466
static void fifo_dma_queue_skb(struct ccat_eth_fifo *const fifo,
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   467
			       struct sk_buff *skb)
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   468
{
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   469
	struct ccat_dma_frame *frame = fifo->dma.next;
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   470
	u32 addr_and_length;
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   471
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   472
	frame->hdr.tx_flags = cpu_to_le32(0);
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   473
	frame->hdr.length = cpu_to_le16(skb->len);
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   474
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   475
	memcpy(frame->data, skb->data, skb->len);
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   476
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   477
	/* Queue frame into CCAT TX-FIFO, CCAT ignores the first 8 bytes of the tx descriptor */
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   478
	addr_and_length = offsetof(struct ccat_dma_frame_hdr, length);
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   479
	addr_and_length += ((void *)frame - fifo->dma.start);
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   480
	addr_and_length +=
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   481
	    ((skb->len + sizeof(struct ccat_dma_frame_hdr)) / 8) << 24;
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   482
	iowrite32(addr_and_length, fifo->reg);
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   483
}
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   484
2638
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   485
static const struct ccat_eth_fifo_operations dma_rx_fifo_ops = {
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   486
	.add = ccat_eth_rx_fifo_dma_add,
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   487
	.ready = fifo_dma_rx_ready,
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   488
	.queue.copy_to_skb = fifo_dma_copy_to_linear_skb,
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   489
};
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   490
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   491
static const struct ccat_eth_fifo_operations dma_tx_fifo_ops = {
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   492
	.add = ccat_eth_tx_fifo_dma_add_free,
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   493
	.ready = fifo_dma_tx_ready,
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   494
	.queue.skb = fifo_dma_queue_skb,
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   495
};
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   496
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   497
static const struct ccat_eth_fifo_operations eim_rx_fifo_ops = {
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   498
	.add = fifo_eim_rx_add,
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   499
	.queue.copy_to_skb = fifo_eim_copy_to_linear_skb,
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   500
	.ready = fifo_eim_rx_ready,
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   501
};
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   502
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   503
static const struct ccat_eth_fifo_operations eim_tx_fifo_ops = {
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   504
	.add = fifo_eim_tx_add,
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   505
	.queue.skb = fifo_eim_queue_skb,
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   506
	.ready = fifo_eim_tx_ready,
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   507
};
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   508
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   509
static void ccat_eth_priv_free(struct ccat_eth_priv *priv)
2550
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   510
{
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   511
	/* reset hw fifo's */
2638
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   512
	ccat_eth_fifo_hw_reset(&priv->rx_fifo);
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   513
	ccat_eth_fifo_hw_reset(&priv->tx_fifo);
2550
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   514
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   515
	/* release dma */
2638
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   516
	ccat_dma_free(priv);
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   517
}
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   518
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   519
static int ccat_hw_disable_mac_filter(struct ccat_eth_priv *priv)
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   520
{
2550
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   521
	iowrite8(0, priv->reg.mii + 0x8 + 6);
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   522
	wmb();
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   523
	return 0;
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   524
}
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   525
2638
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   526
/**
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   527
 * Initalizes both (Rx/Tx) DMA fifo's and related management structures
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   528
 */
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   529
static int ccat_eth_priv_init_dma(struct ccat_eth_priv *priv)
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   530
{
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   531
	struct ccat_dma_mem *const dma = &priv->dma_mem;
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   532
	struct pci_dev *const pdev = priv->func->ccat->pdev;
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   533
	void __iomem *const bar_2 = priv->func->ccat->bar_2;
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   534
	const u8 rx_chan = priv->func->info.rx_dma_chan;
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   535
	const u8 tx_chan = priv->func->info.tx_dma_chan;
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   536
	int status = 0;
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   537
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   538
	dma->dev = &pdev->dev;
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   539
	dma->size = CCAT_ALIGNMENT * 3;
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   540
	dma->base =
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   541
	    dma_zalloc_coherent(dma->dev, dma->size, &dma->phys, GFP_KERNEL);
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   542
	if (!dma->base || !dma->phys) {
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   543
		pr_err("init DMA memory failed.\n");
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   544
		return -ENOMEM;
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   545
	}
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   546
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   547
	priv->rx_fifo.ops = &dma_rx_fifo_ops;
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   548
	status = ccat_dma_init(dma, rx_chan, bar_2, &priv->rx_fifo);
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   549
	if (status) {
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   550
		pr_info("init RX DMA memory failed.\n");
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   551
		ccat_dma_free(priv);
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   552
		return status;
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   553
	}
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   554
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   555
	priv->tx_fifo.ops = &dma_tx_fifo_ops;
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   556
	status = ccat_dma_init(dma, tx_chan, bar_2, &priv->tx_fifo);
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   557
	if (status) {
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   558
		pr_info("init TX DMA memory failed.\n");
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   559
		ccat_dma_free(priv);
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   560
		return status;
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   561
	}
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   562
	return ccat_hw_disable_mac_filter(priv);
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   563
}
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   564
2636
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   565
static int ccat_eth_priv_init_eim(struct ccat_eth_priv *priv)
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   566
{
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   567
	priv->rx_fifo.eim.start = priv->reg.rx_mem;
2638
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   568
	priv->rx_fifo.ops = &eim_rx_fifo_ops;
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   569
	fifo_set_end(&priv->rx_fifo, sizeof(struct ccat_eth_frame));
2636
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   570
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   571
	priv->tx_fifo.eim.start = priv->reg.tx_mem;
2638
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   572
	priv->tx_fifo.ops = &eim_tx_fifo_ops;
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   573
	fifo_set_end(&priv->tx_fifo, priv->func->info.tx_size);
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   574
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   575
	return ccat_hw_disable_mac_filter(priv);
2636
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   576
}
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   577
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   578
/**
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   579
 * Initializes a struct ccat_eth_register with data from a corresponding
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   580
 * CCAT function.
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   581
 */
2638
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   582
static void ccat_eth_priv_init_reg(struct ccat_eth_priv *const priv)
2550
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   583
{
2569
720172a7563f make ccat driver more linux compliant
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2568
diff changeset
   584
	struct ccat_mac_infoblock offsets;
2638
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   585
	struct ccat_eth_register *const reg = &priv->reg;
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   586
	const struct ccat_function *const func = priv->func;
2636
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   587
	void __iomem *const func_base = func->ccat->bar_0 + func->info.addr;
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   588
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   589
	/* struct ccat_eth_fifo contains a union of ccat_dma, ccat_eim and ccat_mem
2638
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   590
	 * the members next and start have to overlay the exact same memory,
2636
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   591
	 * to support 'polymorphic' usage of them */
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   592
	BUILD_BUG_ON(offsetof(struct ccat_dma, next) !=
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   593
		     offsetof(struct ccat_mem, next));
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   594
	BUILD_BUG_ON(offsetof(struct ccat_dma, start) !=
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   595
		     offsetof(struct ccat_mem, start));
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   596
	BUILD_BUG_ON(offsetof(struct ccat_dma, next) !=
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   597
		     offsetof(struct ccat_eim, next));
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   598
	BUILD_BUG_ON(offsetof(struct ccat_dma, start) !=
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   599
		     offsetof(struct ccat_eim, start));
2567
d70aad2f131f - use short kernel types, add empty lines after variable declaration to conform better with linux coding style
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2565
diff changeset
   600
2550
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   601
	memcpy_fromio(&offsets, func_base, sizeof(offsets));
2636
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   602
	reg->mii = func_base + offsets.mii;
2638
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   603
	priv->tx_fifo.reg = func_base + offsets.tx_fifo;
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   604
	priv->rx_fifo.reg = func_base + offsets.tx_fifo + 0x10;
2636
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   605
	reg->mac = func_base + offsets.mac;
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   606
	reg->rx_mem = func_base + offsets.rx_mem;
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   607
	reg->tx_mem = func_base + offsets.tx_mem;
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   608
	reg->misc = func_base + offsets.misc;
2550
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   609
}
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   610
2572
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   611
static netdev_tx_t ccat_eth_start_xmit(struct sk_buff *skb,
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   612
				       struct net_device *dev)
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   613
{
2576
f6a5b3bb0594 Refactoring:
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2574
diff changeset
   614
	struct ccat_eth_priv *const priv = netdev_priv(dev);
2636
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   615
	struct ccat_eth_fifo *const fifo = &priv->tx_fifo;
2572
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   616
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   617
	if (skb_is_nonlinear(skb)) {
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   618
		pr_warn("Non linear skb not supported -> drop frame.\n");
2638
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   619
		atomic64_inc(&fifo->dropped);
2572
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   620
		priv->kfree_skb_any(skb);
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   621
		return NETDEV_TX_OK;
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   622
	}
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   623
2636
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   624
	if (skb->len > MAX_PAYLOAD_SIZE) {
2572
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   625
		pr_warn("skb.len %llu exceeds dma buffer %llu -> drop frame.\n",
2636
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   626
			(u64) skb->len, (u64) MAX_PAYLOAD_SIZE);
2638
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   627
		atomic64_inc(&fifo->dropped);
2572
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   628
		priv->kfree_skb_any(skb);
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   629
		return NETDEV_TX_OK;
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   630
	}
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   631
2638
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   632
	if (!fifo->ops->ready(fifo)) {
2572
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   633
		netdev_err(dev, "BUG! Tx Ring full when queue awake!\n");
2576
f6a5b3bb0594 Refactoring:
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2574
diff changeset
   634
		priv->stop_queue(priv->netdev);
2572
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   635
		return NETDEV_TX_BUSY;
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   636
	}
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   637
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   638
	/* prepare frame in DMA memory */
2638
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   639
	fifo->ops->queue.skb(fifo, skb);
2576
f6a5b3bb0594 Refactoring:
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2574
diff changeset
   640
f6a5b3bb0594 Refactoring:
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2574
diff changeset
   641
	/* update stats */
2638
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   642
	atomic64_add(skb->len, &fifo->bytes);
2572
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   643
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   644
	priv->kfree_skb_any(skb);
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   645
2576
f6a5b3bb0594 Refactoring:
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2574
diff changeset
   646
	ccat_eth_fifo_inc(fifo);
2572
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   647
	/* stop queue if tx ring is full */
2638
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   648
	if (!fifo->ops->ready(fifo)) {
2576
f6a5b3bb0594 Refactoring:
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2574
diff changeset
   649
		priv->stop_queue(priv->netdev);
2572
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   650
	}
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   651
	return NETDEV_TX_OK;
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   652
}
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   653
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   654
/**
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   655
 * Function to transmit a raw buffer to the network (f.e. frameForwardEthernetFrames)
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   656
 * @dev a valid net_device
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   657
 * @data pointer to your raw buffer
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   658
 * @len number of bytes in the raw buffer to transmit
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   659
 */
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   660
static void ccat_eth_xmit_raw(struct net_device *dev, const char *const data,
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   661
			      size_t len)
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   662
{
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   663
	struct sk_buff *skb = dev_alloc_skb(len);
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   664
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   665
	skb->dev = dev;
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   666
	skb_copy_to_linear_data(skb, data, len);
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   667
	skb_put(skb, len);
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   668
	ccat_eth_start_xmit(skb, dev);
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   669
}
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   670
2636
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   671
static void ccat_eth_receive(struct ccat_eth_priv *const priv, const size_t len)
2576
f6a5b3bb0594 Refactoring:
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2574
diff changeset
   672
{
f6a5b3bb0594 Refactoring:
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2574
diff changeset
   673
	struct sk_buff *const skb = dev_alloc_skb(len + NET_IP_ALIGN);
2638
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   674
	struct ccat_eth_fifo *const fifo = &priv->rx_fifo;
2636
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   675
	struct net_device *const dev = priv->netdev;
2572
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   676
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   677
	if (!skb) {
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   678
		pr_info("%s() out of memory :-(\n", __FUNCTION__);
2638
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   679
		atomic64_inc(&fifo->dropped);
2572
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   680
		return;
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   681
	}
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   682
	skb->dev = dev;
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   683
	skb_reserve(skb, NET_IP_ALIGN);
2638
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   684
	fifo->ops->queue.copy_to_skb(fifo, skb, len);
2572
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   685
	skb_put(skb, len);
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   686
	skb->protocol = eth_type_trans(skb, dev);
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   687
	skb->ip_summed = CHECKSUM_UNNECESSARY;
2638
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   688
	atomic64_add(len, &fifo->bytes);
2572
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   689
	netif_rx(skb);
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   690
}
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   691
2576
f6a5b3bb0594 Refactoring:
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2574
diff changeset
   692
static void ccat_eth_link_down(struct net_device *const dev)
2572
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   693
{
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   694
	struct ccat_eth_priv *const priv = netdev_priv(dev);
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   695
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   696
	priv->stop_queue(dev);
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   697
	priv->carrier_off(dev);
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   698
	netdev_info(dev, "NIC Link is Down\n");
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   699
}
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   700
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   701
static void ccat_eth_link_up(struct net_device *const dev)
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   702
{
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   703
	struct ccat_eth_priv *const priv = netdev_priv(dev);
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   704
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   705
	netdev_info(dev, "NIC Link is Up\n");
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   706
	/* TODO netdev_info(dev, "NIC Link is Up %u Mbps %s Duplex\n",
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   707
	   speed == SPEED_100 ? 100 : 10,
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   708
	   cmd.duplex == DUPLEX_FULL ? "Full" : "Half"); */
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   709
2636
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   710
	ccat_eth_fifo_reset(&priv->rx_fifo);
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   711
	ccat_eth_fifo_reset(&priv->tx_fifo);
2572
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   712
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   713
	/* TODO reset CCAT MAC register */
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   714
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   715
	ccat_eth_xmit_raw(dev, frameForwardEthernetFrames,
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   716
			  sizeof(frameForwardEthernetFrames));
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   717
	priv->carrier_on(dev);
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   718
	priv->start_queue(dev);
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   719
}
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   720
2550
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   721
/**
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   722
 * Read link state from CCAT hardware
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   723
 * @return 1 if link is up, 0 if not
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   724
 */
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   725
inline static size_t ccat_eth_priv_read_link_state(const struct ccat_eth_priv
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   726
						   *const priv)
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   727
{
2638
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   728
	return ! !(ioread32(priv->reg.mii + 0x8 + 4) & (1 << 24));
2550
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   729
}
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   730
2572
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   731
/**
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   732
 * Poll for link state changes
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   733
 */
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   734
static void poll_link(struct ccat_eth_priv *const priv)
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   735
{
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   736
	const size_t link = ccat_eth_priv_read_link_state(priv);
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   737
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   738
	if (link != priv->carrier_ok(priv->netdev)) {
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   739
		if (link)
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   740
			ccat_eth_link_up(priv->netdev);
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   741
		else
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   742
			ccat_eth_link_down(priv->netdev);
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   743
	}
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   744
}
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   745
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   746
/**
2576
f6a5b3bb0594 Refactoring:
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2574
diff changeset
   747
 * Poll for available rx dma descriptors in ethernet operating mode
f6a5b3bb0594 Refactoring:
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2574
diff changeset
   748
 */
f6a5b3bb0594 Refactoring:
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2574
diff changeset
   749
static void poll_rx(struct ccat_eth_priv *const priv)
f6a5b3bb0594 Refactoring:
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2574
diff changeset
   750
{
2636
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   751
	struct ccat_eth_fifo *const fifo = &priv->rx_fifo;
2654
b3f6b3e5ef29 devices/ccat: revert "limit rx processing to one frame per poll"
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2638
diff changeset
   752
	size_t rx_per_poll = FIFO_LENGTH / 2;
b3f6b3e5ef29 devices/ccat: revert "limit rx processing to one frame per poll"
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2638
diff changeset
   753
	size_t len = fifo->ops->ready(fifo);
b3f6b3e5ef29 devices/ccat: revert "limit rx processing to one frame per poll"
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2638
diff changeset
   754
b3f6b3e5ef29 devices/ccat: revert "limit rx processing to one frame per poll"
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2638
diff changeset
   755
	while (len && --rx_per_poll) {
2636
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   756
		priv->receive(priv, len);
2638
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   757
		fifo->ops->add(fifo);
2576
f6a5b3bb0594 Refactoring:
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2574
diff changeset
   758
		ccat_eth_fifo_inc(fifo);
2654
b3f6b3e5ef29 devices/ccat: revert "limit rx processing to one frame per poll"
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2638
diff changeset
   759
		len = fifo->ops->ready(fifo);
2638
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   760
	}
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   761
}
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   762
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   763
static void ec_poll(struct net_device *dev)
2572
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   764
{
2576
f6a5b3bb0594 Refactoring:
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2574
diff changeset
   765
	struct ccat_eth_priv *const priv = netdev_priv(dev);
2638
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   766
	poll_link(priv);
2576
f6a5b3bb0594 Refactoring:
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2574
diff changeset
   767
	poll_rx(priv);
2572
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   768
}
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   769
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   770
/**
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   771
 * Poll for available tx dma descriptors in ethernet operating mode
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   772
 */
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   773
static void poll_tx(struct ccat_eth_priv *const priv)
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   774
{
2638
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   775
	if (priv->tx_fifo.ops->ready(&priv->tx_fifo)) {
2572
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   776
		netif_wake_queue(priv->netdev);
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   777
	}
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   778
}
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   779
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   780
/**
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   781
 * Since CCAT doesn't support interrupts until now, we have to poll
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   782
 * some status bits to recognize things like link change etc.
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   783
 */
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   784
static enum hrtimer_restart poll_timer_callback(struct hrtimer *timer)
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   785
{
2576
f6a5b3bb0594 Refactoring:
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2574
diff changeset
   786
	struct ccat_eth_priv *const priv =
f6a5b3bb0594 Refactoring:
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2574
diff changeset
   787
	    container_of(timer, struct ccat_eth_priv, poll_timer);
2572
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   788
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   789
	poll_link(priv);
2638
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   790
	poll_rx(priv);
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   791
	poll_tx(priv);
2576
f6a5b3bb0594 Refactoring:
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2574
diff changeset
   792
	hrtimer_forward_now(timer, POLL_TIME);
2572
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   793
	return HRTIMER_RESTART;
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   794
}
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   795
2550
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   796
static struct rtnl_link_stats64 *ccat_eth_get_stats64(struct net_device *dev, struct rtnl_link_stats64
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   797
						      *storage)
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   798
{
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   799
	struct ccat_eth_priv *const priv = netdev_priv(dev);
2569
720172a7563f make ccat driver more linux compliant
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2568
diff changeset
   800
	struct ccat_mac_register mac;
2638
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   801
2550
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   802
	memcpy_fromio(&mac, priv->reg.mac, sizeof(mac));
2569
720172a7563f make ccat driver more linux compliant
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2568
diff changeset
   803
	storage->rx_packets = mac.rx_frames;	/* total packets received       */
720172a7563f make ccat driver more linux compliant
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2568
diff changeset
   804
	storage->tx_packets = mac.tx_frames;	/* total packets transmitted    */
2638
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   805
	storage->rx_bytes = atomic64_read(&priv->rx_fifo.bytes);	/* total bytes received         */
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   806
	storage->tx_bytes = atomic64_read(&priv->tx_fifo.bytes);	/* total bytes transmitted      */
2569
720172a7563f make ccat driver more linux compliant
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2568
diff changeset
   807
	storage->rx_errors = mac.frame_len_err + mac.rx_mem_full + mac.crc_err + mac.rx_err;	/* bad packets received         */
2573
ad9a35065387 remove print.* from release tree
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2572
diff changeset
   808
	storage->tx_errors = mac.tx_mem_full;	/* packet transmit problems     */
2638
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   809
	storage->rx_dropped = atomic64_read(&priv->rx_fifo.dropped);	/* no space in linux buffers    */
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   810
	storage->tx_dropped = atomic64_read(&priv->tx_fifo.dropped);	/* no space available in linux  */
2550
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   811
	//TODO __u64    multicast;              /* multicast packets received   */
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   812
	//TODO __u64    collisions;
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   813
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   814
	/* detailed rx_errors: */
2569
720172a7563f make ccat driver more linux compliant
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2568
diff changeset
   815
	storage->rx_length_errors = mac.frame_len_err;
720172a7563f make ccat driver more linux compliant
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2568
diff changeset
   816
	storage->rx_over_errors = mac.rx_mem_full;	/* receiver ring buff overflow  */
720172a7563f make ccat driver more linux compliant
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2568
diff changeset
   817
	storage->rx_crc_errors = mac.crc_err;	/* recved pkt with crc error    */
720172a7563f make ccat driver more linux compliant
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2568
diff changeset
   818
	storage->rx_frame_errors = mac.rx_err;	/* recv'd frame alignment error */
720172a7563f make ccat driver more linux compliant
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2568
diff changeset
   819
	storage->rx_fifo_errors = mac.rx_mem_full;	/* recv'r fifo overrun          */
2550
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   820
	//TODO __u64    rx_missed_errors;       /* receiver missed packet       */
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   821
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   822
	/* detailed tx_errors */
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   823
	//TODO __u64    tx_aborted_errors;
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   824
	//TODO __u64    tx_carrier_errors;
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   825
	//TODO __u64    tx_fifo_errors;
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   826
	//TODO __u64    tx_heartbeat_errors;
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   827
	//TODO __u64    tx_window_errors;
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   828
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   829
	/* for cslip etc */
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   830
	//TODO __u64    rx_compressed;
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   831
	//TODO __u64    tx_compressed;
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   832
	return storage;
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   833
}
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   834
2572
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   835
static int ccat_eth_open(struct net_device *dev)
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   836
{
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   837
	struct ccat_eth_priv *const priv = netdev_priv(dev);
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   838
2638
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   839
	if (!priv->ecdev) {
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   840
		hrtimer_init(&priv->poll_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   841
		priv->poll_timer.function = poll_timer_callback;
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   842
		hrtimer_start(&priv->poll_timer, POLL_TIME, HRTIMER_MODE_REL);
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   843
	}
2572
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   844
	return 0;
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   845
}
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   846
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   847
static int ccat_eth_stop(struct net_device *dev)
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   848
{
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   849
	struct ccat_eth_priv *const priv = netdev_priv(dev);
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   850
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   851
	priv->stop_queue(dev);
2638
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   852
	if (!priv->ecdev) {
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   853
		hrtimer_cancel(&priv->poll_timer);
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   854
	}
2572
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   855
	return 0;
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   856
}
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   857
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   858
static const struct net_device_ops ccat_eth_netdev_ops = {
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   859
	.ndo_get_stats64 = ccat_eth_get_stats64,
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   860
	.ndo_open = ccat_eth_open,
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   861
	.ndo_start_xmit = ccat_eth_start_xmit,
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   862
	.ndo_stop = ccat_eth_stop,
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   863
};
0bc1ec2711b1 reorder functions in netdev.c to avoid forward declarations
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2570
diff changeset
   864
2636
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   865
static struct ccat_eth_priv *ccat_eth_alloc_netdev(struct ccat_function *func)
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   866
{
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   867
	struct ccat_eth_priv *priv = NULL;
2550
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   868
	struct net_device *const netdev = alloc_etherdev(sizeof(*priv));
2567
d70aad2f131f - use short kernel types, add empty lines after variable declaration to conform better with linux coding style
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2565
diff changeset
   869
2636
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   870
	if (netdev) {
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   871
		priv = netdev_priv(netdev);
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   872
		memset(priv, 0, sizeof(*priv));
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   873
		priv->netdev = netdev;
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   874
		priv->func = func;
2638
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   875
		ccat_eth_priv_init_reg(priv);
2636
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   876
	}
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   877
	return priv;
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   878
}
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   879
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   880
static int ccat_eth_init_netdev(struct ccat_eth_priv *priv)
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   881
{
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   882
	int status;
2550
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   883
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   884
	/* init netdev with MAC and stack callbacks */
2636
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   885
	memcpy_fromio(priv->netdev->dev_addr, priv->reg.mii + 8,
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   886
		      priv->netdev->addr_len);
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   887
	priv->netdev->netdev_ops = &ccat_eth_netdev_ops;
2550
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   888
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   889
	/* use as EtherCAT device? */
2636
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   890
	priv->carrier_off = ecdev_carrier_off;
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   891
	priv->carrier_ok = ecdev_carrier_ok;
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   892
	priv->carrier_on = ecdev_carrier_on;
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   893
	priv->kfree_skb_any = ecdev_kfree_skb_any;
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   894
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   895
	/* It would be more intuitive to check for:
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   896
	 * if (priv->func->drv->type == CCATINFO_ETHERCAT_MASTER_DMA) {
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   897
	 * unfortunately priv->func->drv is not initialized until probe() returns.
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   898
	 * So we check if there is a rx dma fifo registered to determine dma/io mode */
2638
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   899
	if (&dma_rx_fifo_ops == priv->rx_fifo.ops) {
2636
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   900
		priv->receive = ecdev_receive_dma;
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   901
	} else {
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   902
		priv->receive = ecdev_receive_eim;
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   903
	}
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   904
	priv->start_queue = ecdev_nop;
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   905
	priv->stop_queue = ecdev_nop;
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   906
	priv->unregister = unregister_ecdev;
2638
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   907
	priv->ecdev = ecdev_offer(priv->netdev, ec_poll, THIS_MODULE);
2550
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   908
	if (priv->ecdev) {
2636
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   909
		priv->carrier_off(priv->netdev);
2550
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   910
		if (ecdev_open(priv->ecdev)) {
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   911
			pr_info("unable to register network device.\n");
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   912
			ecdev_withdraw(priv->ecdev);
2638
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   913
			ccat_eth_priv_free(priv);
2636
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   914
			free_netdev(priv->netdev);
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   915
			return -1;	// TODO return better error code
2550
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   916
		}
2636
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   917
		priv->func->private_data = priv;
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   918
		return 0;
2550
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   919
	}
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   920
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   921
	/* EtherCAT disabled -> prepare normal ethernet mode */
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   922
	priv->carrier_off = netif_carrier_off;
2567
d70aad2f131f - use short kernel types, add empty lines after variable declaration to conform better with linux coding style
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2565
diff changeset
   923
	priv->carrier_ok = netif_carrier_ok;
2550
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   924
	priv->carrier_on = netif_carrier_on;
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   925
	priv->kfree_skb_any = dev_kfree_skb_any;
2636
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   926
	priv->receive = ccat_eth_receive;
2550
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   927
	priv->start_queue = netif_start_queue;
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   928
	priv->stop_queue = netif_stop_queue;
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   929
	priv->unregister = unregister_netdev;
2636
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   930
	priv->carrier_off(priv->netdev);
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   931
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   932
	status = register_netdev(priv->netdev);
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   933
	if (status) {
2550
7e25950ea941 replace not working symlinks with real copies from the ccat main repository(git)
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2549
diff changeset
   934
		pr_info("unable to register network device.\n");
2638
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   935
		ccat_eth_priv_free(priv);
2636
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   936
		free_netdev(priv->netdev);
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   937
		return status;
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   938
	}
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   939
	pr_info("registered %s as network device.\n", priv->netdev->name);
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   940
	priv->func->private_data = priv;
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   941
	return 0;
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   942
}
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   943
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   944
static int ccat_eth_dma_probe(struct ccat_function *func)
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   945
{
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   946
	struct ccat_eth_priv *priv = ccat_eth_alloc_netdev(func);
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   947
	int status;
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   948
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   949
	if (!priv)
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   950
		return -ENOMEM;
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   951
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   952
	status = ccat_eth_priv_init_dma(priv);
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   953
	if (status) {
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   954
		pr_warn("%s(): DMA initialization failed.\n", __FUNCTION__);
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   955
		free_netdev(priv->netdev);
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   956
		return status;
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   957
	}
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   958
	return ccat_eth_init_netdev(priv);
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   959
}
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   960
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   961
static void ccat_eth_dma_remove(struct ccat_function *func)
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   962
{
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   963
	struct ccat_eth_priv *const eth = func->private_data;
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   964
	eth->unregister(eth->netdev);
2638
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   965
	ccat_eth_priv_free(eth);
2636
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   966
	free_netdev(eth->netdev);
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   967
}
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   968
2638
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   969
const struct ccat_driver eth_dma_driver = {
2636
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   970
	.type = CCATINFO_ETHERCAT_MASTER_DMA,
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   971
	.probe = ccat_eth_dma_probe,
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   972
	.remove = ccat_eth_dma_remove,
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   973
};
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   974
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   975
static int ccat_eth_eim_probe(struct ccat_function *func)
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   976
{
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   977
	struct ccat_eth_priv *priv = ccat_eth_alloc_netdev(func);
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   978
	int status;
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   979
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   980
	if (!priv)
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   981
		return -ENOMEM;
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   982
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   983
	status = ccat_eth_priv_init_eim(priv);
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   984
	if (status) {
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   985
		pr_warn("%s(): memory initialization failed.\n", __FUNCTION__);
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   986
		free_netdev(priv->netdev);
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   987
		return status;
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   988
	}
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   989
	return ccat_eth_init_netdev(priv);
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   990
}
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   991
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   992
static void ccat_eth_eim_remove(struct ccat_function *func)
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   993
{
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   994
	struct ccat_eth_priv *const eth = func->private_data;
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   995
	eth->unregister(eth->netdev);
2638
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
   996
	ccat_eth_priv_free(eth);
2636
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   997
	free_netdev(eth->netdev);
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   998
}
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
   999
2638
5995331a55fe update ccat driver to v0.14
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2636
diff changeset
  1000
const struct ccat_driver eth_eim_driver = {
2636
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
  1001
	.type = CCATINFO_ETHERCAT_NODMA,
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
  1002
	.probe = ccat_eth_eim_probe,
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
  1003
	.remove = ccat_eth_eim_remove,
0613017547fe update ccat driver to v0.13
Patrick Bruenn <p.bruenn@beckhoff.com>
parents: 2578
diff changeset
  1004
};