// SPDX-License-Identifier: GPL-2.0-or-later /* * This code is derived from the VIA reference driver (copyright message * below) provided to Red Hat by VIA Networking Technologies, Inc. for * addition to the Linux kernel. * * The code has been merged into one source file, cleaned up to follow * Linux coding style, ported to the Linux 2.6 kernel tree and cleaned * for 64bit hardware platforms. * * TODO * rx_copybreak/alignment * More testing * * The changes are (c) Copyright 2004, Red Hat Inc. <[email protected]> * Additional fixes and clean up: Francois Romieu * * This source has not been verified for use in safety critical systems. * * Please direct queries about the revamped driver to the linux-kernel * list not VIA. * * Original code: * * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc. * All rights reserved. * * Author: Chuang Liang-Shing, AJ Jiang * * Date: Jan 24, 2003 * * MODULE_LICENSE("GPL"); */ #define pr_fmt(fmt) … #include <linux/module.h> #include <linux/types.h> #include <linux/bitops.h> #include <linux/init.h> #include <linux/dma-mapping.h> #include <linux/mm.h> #include <linux/errno.h> #include <linux/ioport.h> #include <linux/pci.h> #include <linux/kernel.h> #include <linux/netdevice.h> #include <linux/etherdevice.h> #include <linux/skbuff.h> #include <linux/delay.h> #include <linux/timer.h> #include <linux/slab.h> #include <linux/interrupt.h> #include <linux/string.h> #include <linux/wait.h> #include <linux/io.h> #include <linux/if.h> #include <linux/uaccess.h> #include <linux/proc_fs.h> #include <linux/of.h> #include <linux/of_address.h> #include <linux/of_irq.h> #include <linux/inetdevice.h> #include <linux/platform_device.h> #include <linux/reboot.h> #include <linux/ethtool.h> #include <linux/mii.h> #include <linux/in.h> #include <linux/if_arp.h> #include <linux/if_vlan.h> #include <linux/ip.h> #include <linux/tcp.h> #include <linux/udp.h> #include <linux/crc-ccitt.h> #include <linux/crc32.h> #include "via-velocity.h" enum velocity_bus_type { … }; static int velocity_nics; static void velocity_set_power_state(struct velocity_info *vptr, char state) { … } /** * mac_get_cam_mask - Read a CAM mask * @regs: register block for this velocity * @mask: buffer to store mask * * Fetch the mask bits of the selected CAM and store them into the * provided mask buffer. */ static void mac_get_cam_mask(struct mac_regs __iomem *regs, u8 *mask) { … } /** * mac_set_cam_mask - Set a CAM mask * @regs: register block for this velocity * @mask: CAM mask to load * * Store a new mask into a CAM */ static void mac_set_cam_mask(struct mac_regs __iomem *regs, u8 *mask) { … } static void mac_set_vlan_cam_mask(struct mac_regs __iomem *regs, u8 *mask) { … } /** * mac_set_cam - set CAM data * @regs: register block of this velocity * @idx: Cam index * @addr: 2 or 6 bytes of CAM data * * Load an address or vlan tag into a CAM */ static void mac_set_cam(struct mac_regs __iomem *regs, int idx, const u8 *addr) { … } static void mac_set_vlan_cam(struct mac_regs __iomem *regs, int idx, const u8 *addr) { … } /** * mac_wol_reset - reset WOL after exiting low power * @regs: register block of this velocity * * Called after we drop out of wake on lan mode in order to * reset the Wake on lan features. This function doesn't restore * the rest of the logic from the result of sleep/wakeup */ static void mac_wol_reset(struct mac_regs __iomem *regs) { … } static const struct ethtool_ops velocity_ethtool_ops; /* Define module options */ MODULE_AUTHOR(…) …; MODULE_LICENSE(…) …; MODULE_DESCRIPTION(…) …; #define VELOCITY_PARAM(N, D) … #define RX_DESC_MIN … #define RX_DESC_MAX … #define RX_DESC_DEF … VELOCITY_PARAM(RxDescriptors, "Number of receive descriptors"); #define TX_DESC_MIN … #define TX_DESC_MAX … #define TX_DESC_DEF … VELOCITY_PARAM(TxDescriptors, "Number of transmit descriptors"); #define RX_THRESH_MIN … #define RX_THRESH_MAX … #define RX_THRESH_DEF … /* rx_thresh[] is used for controlling the receive fifo threshold. 0: indicate the rxfifo threshold is 128 bytes. 1: indicate the rxfifo threshold is 512 bytes. 2: indicate the rxfifo threshold is 1024 bytes. 3: indicate the rxfifo threshold is store & forward. */ VELOCITY_PARAM(rx_thresh, "Receive fifo threshold"); #define DMA_LENGTH_MIN … #define DMA_LENGTH_MAX … #define DMA_LENGTH_DEF … /* DMA_length[] is used for controlling the DMA length 0: 8 DWORDs 1: 16 DWORDs 2: 32 DWORDs 3: 64 DWORDs 4: 128 DWORDs 5: 256 DWORDs 6: SF(flush till emply) 7: SF(flush till emply) */ VELOCITY_PARAM(DMA_length, "DMA length"); #define IP_ALIG_DEF … /* IP_byte_align[] is used for IP header DWORD byte aligned 0: indicate the IP header won't be DWORD byte aligned.(Default) . 1: indicate the IP header will be DWORD byte aligned. In some environment, the IP header should be DWORD byte aligned, or the packet will be droped when we receive it. (eg: IPVS) */ VELOCITY_PARAM(IP_byte_align, "Enable IP header dword aligned"); #define FLOW_CNTL_DEF … #define FLOW_CNTL_MIN … #define FLOW_CNTL_MAX … /* flow_control[] is used for setting the flow control ability of NIC. 1: hardware deafult - AUTO (default). Use Hardware default value in ANAR. 2: enable TX flow control. 3: enable RX flow control. 4: enable RX/TX flow control. 5: disable */ VELOCITY_PARAM(flow_control, "Enable flow control ability"); #define MED_LNK_DEF … #define MED_LNK_MIN … #define MED_LNK_MAX … /* speed_duplex[] is used for setting the speed and duplex mode of NIC. 0: indicate autonegotiation for both speed and duplex mode 1: indicate 100Mbps half duplex mode 2: indicate 100Mbps full duplex mode 3: indicate 10Mbps half duplex mode 4: indicate 10Mbps full duplex mode 5: indicate 1000Mbps full duplex mode Note: if EEPROM have been set to the force mode, this option is ignored by driver. */ VELOCITY_PARAM(speed_duplex, "Setting the speed and duplex mode"); #define WOL_OPT_DEF … #define WOL_OPT_MIN … #define WOL_OPT_MAX … /* wol_opts[] is used for controlling wake on lan behavior. 0: Wake up if recevied a magic packet. (Default) 1: Wake up if link status is on/off. 2: Wake up if recevied an arp packet. 4: Wake up if recevied any unicast packet. Those value can be sumed up to support more than one option. */ VELOCITY_PARAM(wol_opts, "Wake On Lan options"); static int rx_copybreak = …; module_param(rx_copybreak, int, 0644); MODULE_PARM_DESC(…) …; /* * Internal board variants. At the moment we have only one */ static struct velocity_info_tbl chip_info_table[] = …; /* * Describe the PCI device identifiers that we support in this * device driver. Used for hotplug autoloading. */ static const struct pci_device_id velocity_pci_id_table[] = …; MODULE_DEVICE_TABLE(pci, velocity_pci_id_table); /* * Describe the OF device identifiers that we support in this * device driver. Used for devicetree nodes. */ static const struct of_device_id velocity_of_ids[] = …; MODULE_DEVICE_TABLE(of, velocity_of_ids); /** * get_chip_name - identifier to name * @chip_id: chip identifier * * Given a chip identifier return a suitable description. Returns * a pointer a static string valid while the driver is loaded. */ static const char *get_chip_name(enum chip_type chip_id) { … } /** * velocity_set_int_opt - parser for integer options * @opt: pointer to option value * @val: value the user requested (or -1 for default) * @min: lowest value allowed * @max: highest value allowed * @def: default value * @name: property name * * Set an integer property in the module options. This function does * all the verification and checking as well as reporting so that * we don't duplicate code for each option. */ static void velocity_set_int_opt(int *opt, int val, int min, int max, int def, char *name) { … } /** * velocity_set_bool_opt - parser for boolean options * @opt: pointer to option value * @val: value the user requested (or -1 for default) * @def: default value (yes/no) * @flag: numeric value to set for true. * @name: property name * * Set a boolean property in the module options. This function does * all the verification and checking as well as reporting so that * we don't duplicate code for each option. */ static void velocity_set_bool_opt(u32 *opt, int val, int def, u32 flag, char *name) { … } /** * velocity_get_options - set options on device * @opts: option structure for the device * @index: index of option to use in module options array * * Turn the module and command options into a single structure * for the current device */ static void velocity_get_options(struct velocity_opt *opts, int index) { … } /** * velocity_init_cam_filter - initialise CAM * @vptr: velocity to program * * Initialize the content addressable memory used for filters. Load * appropriately according to the presence of VLAN */ static void velocity_init_cam_filter(struct velocity_info *vptr) { … } static int velocity_vlan_rx_add_vid(struct net_device *dev, __be16 proto, u16 vid) { … } static int velocity_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, u16 vid) { … } static void velocity_init_rx_ring_indexes(struct velocity_info *vptr) { … } /** * velocity_rx_reset - handle a receive reset * @vptr: velocity we are resetting * * Reset the ownership and status for the receive ring side. * Hand all the receive queue to the NIC. */ static void velocity_rx_reset(struct velocity_info *vptr) { … } /** * velocity_get_opt_media_mode - get media selection * @vptr: velocity adapter * * Get the media mode stored in EEPROM or module options and load * mii_status accordingly. The requested link state information * is also returned. */ static u32 velocity_get_opt_media_mode(struct velocity_info *vptr) { … } /** * safe_disable_mii_autopoll - autopoll off * @regs: velocity registers * * Turn off the autopoll and wait for it to disable on the chip */ static void safe_disable_mii_autopoll(struct mac_regs __iomem *regs) { … } /** * enable_mii_autopoll - turn on autopolling * @regs: velocity registers * * Enable the MII link status autopoll feature on the Velocity * hardware. Wait for it to enable. */ static void enable_mii_autopoll(struct mac_regs __iomem *regs) { … } /** * velocity_mii_read - read MII data * @regs: velocity registers * @index: MII register index * @data: buffer for received data * * Perform a single read of an MII 16bit register. Returns zero * on success or -ETIMEDOUT if the PHY did not respond. */ static int velocity_mii_read(struct mac_regs __iomem *regs, u8 index, u16 *data) { … } /** * mii_check_media_mode - check media state * @regs: velocity registers * * Check the current MII status and determine the link status * accordingly */ static u32 mii_check_media_mode(struct mac_regs __iomem *regs) { … } /** * velocity_mii_write - write MII data * @regs: velocity registers * @mii_addr: MII register index * @data: 16bit data for the MII register * * Perform a single write to an MII 16bit register. Returns zero * on success or -ETIMEDOUT if the PHY did not respond. */ static int velocity_mii_write(struct mac_regs __iomem *regs, u8 mii_addr, u16 data) { … } /** * set_mii_flow_control - flow control setup * @vptr: velocity interface * * Set up the flow control on this interface according to * the supplied user/eeprom options. */ static void set_mii_flow_control(struct velocity_info *vptr) { … } /** * mii_set_auto_on - autonegotiate on * @vptr: velocity * * Enable autonegotation on this interface */ static void mii_set_auto_on(struct velocity_info *vptr) { … } static u32 check_connection_type(struct mac_regs __iomem *regs) { … } /** * velocity_set_media_mode - set media mode * @vptr: velocity adapter * @mii_status: old MII link state * * Check the media link state and configure the flow control * PHY and also velocity hardware setup accordingly. In particular * we need to set up CD polling and frame bursting. */ static int velocity_set_media_mode(struct velocity_info *vptr, u32 mii_status) { … } /** * velocity_print_link_status - link status reporting * @vptr: velocity to report on * * Turn the link status of the velocity card into a kernel log * description of the new link state, detailing speed and duplex * status */ static void velocity_print_link_status(struct velocity_info *vptr) { … } /** * enable_flow_control_ability - flow control * @vptr: veloity to configure * * Set up flow control according to the flow control options * determined by the eeprom/configuration. */ static void enable_flow_control_ability(struct velocity_info *vptr) { … } /** * velocity_soft_reset - soft reset * @vptr: velocity to reset * * Kick off a soft reset of the velocity adapter and then poll * until the reset sequence has completed before returning. */ static int velocity_soft_reset(struct velocity_info *vptr) { … } /** * velocity_set_multi - filter list change callback * @dev: network device * * Called by the network layer when the filter lists need to change * for a velocity adapter. Reload the CAMs with the new address * filter ruleset. */ static void velocity_set_multi(struct net_device *dev) { … } /* * MII access , media link mode setting functions */ /** * mii_init - set up MII * @vptr: velocity adapter * @mii_status: links tatus * * Set up the PHY for the current link state. */ static void mii_init(struct velocity_info *vptr, u32 mii_status) { … } /** * setup_queue_timers - Setup interrupt timers * @vptr: velocity adapter * * Setup interrupt frequency during suppression (timeout if the frame * count isn't filled). */ static void setup_queue_timers(struct velocity_info *vptr) { … } /** * setup_adaptive_interrupts - Setup interrupt suppression * @vptr: velocity adapter * * The velocity is able to suppress interrupt during high interrupt load. * This function turns on that feature. */ static void setup_adaptive_interrupts(struct velocity_info *vptr) { … } /** * velocity_init_registers - initialise MAC registers * @vptr: velocity to init * @type: type of initialisation (hot or cold) * * Initialise the MAC on a reset or on first set up on the * hardware. */ static void velocity_init_registers(struct velocity_info *vptr, enum velocity_init_type type) { … } static void velocity_give_many_rx_descs(struct velocity_info *vptr) { … } /** * velocity_init_dma_rings - set up DMA rings * @vptr: Velocity to set up * * Allocate PCI mapped DMA rings for the receive and transmit layer * to use. */ static int velocity_init_dma_rings(struct velocity_info *vptr) { … } static void velocity_set_rxbufsize(struct velocity_info *vptr, int mtu) { … } /** * velocity_alloc_rx_buf - allocate aligned receive buffer * @vptr: velocity * @idx: ring index * * Allocate a new full sized buffer for the reception of a frame and * map it into PCI space for the hardware to use. The hardware * requires *64* byte alignment of the buffer which makes life * less fun than would be ideal. */ static int velocity_alloc_rx_buf(struct velocity_info *vptr, int idx) { … } static int velocity_rx_refill(struct velocity_info *vptr) { … } /** * velocity_free_rd_ring - free receive ring * @vptr: velocity to clean up * * Free the receive buffers for each ring slot and any * attached socket buffers that need to go away. */ static void velocity_free_rd_ring(struct velocity_info *vptr) { … } /** * velocity_init_rd_ring - set up receive ring * @vptr: velocity to configure * * Allocate and set up the receive buffers for each ring slot and * assign them to the network adapter. */ static int velocity_init_rd_ring(struct velocity_info *vptr) { … } /** * velocity_init_td_ring - set up transmit ring * @vptr: velocity * * Set up the transmit ring and chain the ring pointers together. * Returns zero on success or a negative posix errno code for * failure. */ static int velocity_init_td_ring(struct velocity_info *vptr) { … } /** * velocity_free_dma_rings - free PCI ring pointers * @vptr: Velocity to free from * * Clean up the PCI ring buffers allocated to this velocity. */ static void velocity_free_dma_rings(struct velocity_info *vptr) { … } static int velocity_init_rings(struct velocity_info *vptr, int mtu) { … } /** * velocity_free_tx_buf - free transmit buffer * @vptr: velocity * @tdinfo: buffer * @td: transmit descriptor to free * * Release an transmit buffer. If the buffer was preallocated then * recycle it, if not then unmap the buffer. */ static void velocity_free_tx_buf(struct velocity_info *vptr, struct velocity_td_info *tdinfo, struct tx_desc *td) { … } /* * FIXME: could we merge this with velocity_free_tx_buf ? */ static void velocity_free_td_ring_entry(struct velocity_info *vptr, int q, int n) { … } /** * velocity_free_td_ring - free td ring * @vptr: velocity * * Free up the transmit ring for this particular velocity adapter. * We free the ring contents but not the ring itself. */ static void velocity_free_td_ring(struct velocity_info *vptr) { … } static void velocity_free_rings(struct velocity_info *vptr) { … } /** * velocity_error - handle error from controller * @vptr: velocity * @status: card status * * Process an error report from the hardware and attempt to recover * the card itself. At the moment we cannot recover from some * theoretically impossible errors but this could be fixed using * the pci_device_failed logic to bounce the hardware * */ static void velocity_error(struct velocity_info *vptr, int status) { … } /** * velocity_tx_srv - transmit interrupt service * @vptr: Velocity * * Scan the queues looking for transmitted packets that * we can complete and clean up. Update any statistics as * necessary/ */ static int velocity_tx_srv(struct velocity_info *vptr) { … } /** * velocity_rx_csum - checksum process * @rd: receive packet descriptor * @skb: network layer packet buffer * * Process the status bits for the received packet and determine * if the checksum was computed and verified by the hardware */ static inline void velocity_rx_csum(struct rx_desc *rd, struct sk_buff *skb) { … } /** * velocity_rx_copy - in place Rx copy for small packets * @rx_skb: network layer packet buffer candidate * @pkt_size: received data size * @vptr: velocity adapter * * Replace the current skb that is scheduled for Rx processing by a * shorter, immediately allocated skb, if the received packet is small * enough. This function returns a negative value if the received * packet is too big or if memory is exhausted. */ static int velocity_rx_copy(struct sk_buff **rx_skb, int pkt_size, struct velocity_info *vptr) { … } /** * velocity_iph_realign - IP header alignment * @vptr: velocity we are handling * @skb: network layer packet buffer * @pkt_size: received data size * * Align IP header on a 2 bytes boundary. This behavior can be * configured by the user. */ static inline void velocity_iph_realign(struct velocity_info *vptr, struct sk_buff *skb, int pkt_size) { … } /** * velocity_receive_frame - received packet processor * @vptr: velocity we are handling * @idx: ring index * * A packet has arrived. We process the packet and if appropriate * pass the frame up the network stack */ static int velocity_receive_frame(struct velocity_info *vptr, int idx) { … } /** * velocity_rx_srv - service RX interrupt * @vptr: velocity * @budget_left: remaining budget * * Walk the receive ring of the velocity adapter and remove * any received packets from the receive queue. Hand the ring * slots back to the adapter for reuse. */ static int velocity_rx_srv(struct velocity_info *vptr, int budget_left) { … } static int velocity_poll(struct napi_struct *napi, int budget) { … } /** * velocity_intr - interrupt callback * @irq: interrupt number * @dev_instance: interrupting device * * Called whenever an interrupt is generated by the velocity * adapter IRQ line. We may not be the source of the interrupt * and need to identify initially if we are, and if not exit as * efficiently as possible. */ static irqreturn_t velocity_intr(int irq, void *dev_instance) { … } /** * velocity_open - interface activation callback * @dev: network layer device to open * * Called when the network layer brings the interface up. Returns * a negative posix error code on failure, or zero on success. * * All the ring allocation and set up is done on open for this * adapter to minimise memory usage when inactive */ static int velocity_open(struct net_device *dev) { … } /** * velocity_shutdown - shut down the chip * @vptr: velocity to deactivate * * Shuts down the internal operations of the velocity and * disables interrupts, autopolling, transmit and receive */ static void velocity_shutdown(struct velocity_info *vptr) { … } /** * velocity_change_mtu - MTU change callback * @dev: network device * @new_mtu: desired MTU * * Handle requests from the networking layer for MTU change on * this interface. It gets called on a change by the network layer. * Return zero for success or negative posix error code. */ static int velocity_change_mtu(struct net_device *dev, int new_mtu) { … } #ifdef CONFIG_NET_POLL_CONTROLLER /** * velocity_poll_controller - Velocity Poll controller function * @dev: network device * * * Used by NETCONSOLE and other diagnostic tools to allow network I/P * with interrupts disabled. */ static void velocity_poll_controller(struct net_device *dev) { … } #endif /** * velocity_mii_ioctl - MII ioctl handler * @dev: network device * @ifr: the ifreq block for the ioctl * @cmd: the command * * Process MII requests made via ioctl from the network layer. These * are used by tools like kudzu to interrogate the link state of the * hardware */ static int velocity_mii_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) { … } /** * velocity_ioctl - ioctl entry point * @dev: network device * @rq: interface request ioctl * @cmd: command code * * Called when the user issues an ioctl request to the network * device in question. The velocity interface supports MII. */ static int velocity_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) { … } /** * velocity_get_stats - statistics callback * @dev: network device * * Callback from the network layer to allow driver statistics * to be resynchronized with hardware collected state. In the * case of the velocity we need to pull the MIB counters from * the hardware into the counters before letting the network * layer display them. */ static struct net_device_stats *velocity_get_stats(struct net_device *dev) { … } /** * velocity_close - close adapter callback * @dev: network device * * Callback from the network layer when the velocity is being * deactivated by the network layer */ static int velocity_close(struct net_device *dev) { … } /** * velocity_xmit - transmit packet callback * @skb: buffer to transmit * @dev: network device * * Called by the network layer to request a packet is queued to * the velocity. Returns zero on success. */ static netdev_tx_t velocity_xmit(struct sk_buff *skb, struct net_device *dev) { … } static const struct net_device_ops velocity_netdev_ops = …; /** * velocity_init_info - init private data * @vptr: Velocity info * @info: Board type * * Set up the initial velocity_info struct for the device that has been * discovered. */ static void velocity_init_info(struct velocity_info *vptr, const struct velocity_info_tbl *info) { … } /** * velocity_get_pci_info - retrieve PCI info for device * @vptr: velocity device * * Retrieve the PCI configuration space data that interests us from * the kernel PCI layer */ static int velocity_get_pci_info(struct velocity_info *vptr) { … } /** * velocity_get_platform_info - retrieve platform info for device * @vptr: velocity device * * Retrieve the Platform configuration data that interests us */ static int velocity_get_platform_info(struct velocity_info *vptr) { … } /** * velocity_print_info - per driver data * @vptr: velocity * * Print per driver data as the kernel driver finds Velocity * hardware */ static void velocity_print_info(struct velocity_info *vptr) { … } static u32 velocity_get_link(struct net_device *dev) { … } /** * velocity_probe - set up discovered velocity device * @dev: PCI device * @info: table of match * @irq: interrupt info * @bustype: bus that device is connected to * * Configure a discovered adapter from scratch. Return a negative * errno error code on failure paths. */ static int velocity_probe(struct device *dev, int irq, const struct velocity_info_tbl *info, enum velocity_bus_type bustype) { … } /** * velocity_remove - device unplug * @dev: device being removed * * Device unload callback. Called on an unplug or on module * unload for each active device that is present. Disconnects * the device from the network layer and frees all the resources */ static int velocity_remove(struct device *dev) { … } static int velocity_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) { … } static void velocity_pci_remove(struct pci_dev *pdev) { … } static int velocity_platform_probe(struct platform_device *pdev) { … } static void velocity_platform_remove(struct platform_device *pdev) { … } #ifdef CONFIG_PM_SLEEP /** * wol_calc_crc - WOL CRC * @size: size of the wake mask * @pattern: data pattern * @mask_pattern: mask * * Compute the wake on lan crc hashes for the packet header * we are interested in. */ static u16 wol_calc_crc(int size, u8 *pattern, u8 *mask_pattern) { … } /** * velocity_set_wol - set up for wake on lan * @vptr: velocity to set WOL status on * * Set a card up for wake on lan either by unicast or by * ARP packet. * * FIXME: check static buffer is safe here */ static int velocity_set_wol(struct velocity_info *vptr) { … } /** * velocity_save_context - save registers * @vptr: velocity * @context: buffer for stored context * * Retrieve the current configuration from the velocity hardware * and stash it in the context structure, for use by the context * restore functions. This allows us to save things we need across * power down states */ static void velocity_save_context(struct velocity_info *vptr, struct velocity_context *context) { … } static int velocity_suspend(struct device *dev) { … } /** * velocity_restore_context - restore registers * @vptr: velocity * @context: buffer for stored context * * Reload the register configuration from the velocity context * created by velocity_save_context. */ static void velocity_restore_context(struct velocity_info *vptr, struct velocity_context *context) { … } static int velocity_resume(struct device *dev) { … } #endif /* CONFIG_PM_SLEEP */ static SIMPLE_DEV_PM_OPS(velocity_pm_ops, velocity_suspend, velocity_resume); /* * Definition for our device driver. The PCI layer interface * uses this to handle all our card discover and plugging */ static struct pci_driver velocity_pci_driver = …; static struct platform_driver velocity_platform_driver = …; /** * velocity_ethtool_up - pre hook for ethtool * @dev: network device * * Called before an ethtool operation. We need to make sure the * chip is out of D3 state before we poke at it. In case of ethtool * ops nesting, only wake the device up in the outermost block. */ static int velocity_ethtool_up(struct net_device *dev) { … } /** * velocity_ethtool_down - post hook for ethtool * @dev: network device * * Called after an ethtool operation. Restore the chip back to D3 * state if it isn't running. In case of ethtool ops nesting, only * put the device to sleep in the outermost block. */ static void velocity_ethtool_down(struct net_device *dev) { … } static int velocity_get_link_ksettings(struct net_device *dev, struct ethtool_link_ksettings *cmd) { … } static int velocity_set_link_ksettings(struct net_device *dev, const struct ethtool_link_ksettings *cmd) { … } static void velocity_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info) { … } static void velocity_ethtool_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol) { … } static int velocity_ethtool_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol) { … } static int get_pending_timer_val(int val) { … } static void set_pending_timer_val(int *val, u32 us) { … } static int velocity_get_coalesce(struct net_device *dev, struct ethtool_coalesce *ecmd, struct kernel_ethtool_coalesce *kernel_coal, struct netlink_ext_ack *extack) { … } static int velocity_set_coalesce(struct net_device *dev, struct ethtool_coalesce *ecmd, struct kernel_ethtool_coalesce *kernel_coal, struct netlink_ext_ack *extack) { … } static const char velocity_gstrings[][ETH_GSTRING_LEN] = …; static void velocity_get_strings(struct net_device *dev, u32 sset, u8 *data) { … } static int velocity_get_sset_count(struct net_device *dev, int sset) { … } static void velocity_get_ethtool_stats(struct net_device *dev, struct ethtool_stats *stats, u64 *data) { … } static const struct ethtool_ops velocity_ethtool_ops = …; #if defined(CONFIG_PM) && defined(CONFIG_INET) static int velocity_netdev_event(struct notifier_block *nb, unsigned long notification, void *ptr) { … } static struct notifier_block velocity_inetaddr_notifier = …; static void velocity_register_notifier(void) { … } static void velocity_unregister_notifier(void) { … } #else #define velocity_register_notifier … #define velocity_unregister_notifier … #endif /* defined(CONFIG_PM) && defined(CONFIG_INET) */ /** * velocity_init_module - load time function * * Called when the velocity module is loaded. The PCI driver * is registered with the PCI layer, and in turn will call * the probe functions for each velocity adapter installed * in the system. */ static int __init velocity_init_module(void) { … } /** * velocity_cleanup_module - module unload * * When the velocity hardware is unloaded this function is called. * It will clean up the notifiers and the unregister the PCI * driver interface for this hardware. This in turn cleans up * all discovered interfaces before returning from the function */ static void __exit velocity_cleanup_module(void) { … } module_init(…) …; module_exit(velocity_cleanup_module);
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