2 * This code is derived from the VIA reference driver (copyright message
3 * below) provided to Red Hat by VIA Networking Technologies, Inc. for
4 * addition to the Linux kernel.
6 * The code has been merged into one source file, cleaned up to follow
7 * Linux coding style, ported to the Linux 2.6 kernel tree and cleaned
8 * for 64bit hardware platforms.
11 * rx_copybreak/alignment
15 * The changes are (c) Copyright 2004, Red Hat Inc. <alan@redhat.com>
16 * Additional fixes and clean up: Francois Romieu
18 * This source has not been verified for use in safety critical systems.
20 * Please direct queries about the revamped driver to the linux-kernel
25 * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
26 * All rights reserved.
28 * This software may be redistributed and/or modified under
29 * the terms of the GNU General Public License as published by the Free
30 * Software Foundation; either version 2 of the License, or
33 * This program is distributed in the hope that it will be useful, but
34 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
35 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
38 * Author: Chuang Liang-Shing, AJ Jiang
42 * MODULE_LICENSE("GPL");
47 #include <linux/module.h>
48 #include <linux/types.h>
49 #include <linux/init.h>
51 #include <linux/errno.h>
52 #include <linux/ioport.h>
53 #include <linux/pci.h>
54 #include <linux/kernel.h>
55 #include <linux/netdevice.h>
56 #include <linux/etherdevice.h>
57 #include <linux/skbuff.h>
58 #include <linux/delay.h>
59 #include <linux/timer.h>
60 #include <linux/slab.h>
61 #include <linux/interrupt.h>
62 #include <linux/string.h>
63 #include <linux/wait.h>
66 #include <asm/uaccess.h>
67 #include <linux/proc_fs.h>
68 #include <linux/inetdevice.h>
69 #include <linux/reboot.h>
70 #include <linux/ethtool.h>
71 #include <linux/mii.h>
73 #include <linux/if_arp.h>
74 #include <linux/if_vlan.h>
76 #include <linux/tcp.h>
77 #include <linux/udp.h>
78 #include <linux/crc-ccitt.h>
79 #include <linux/crc32.h>
81 #include "via-velocity.h"
84 static int velocity_nics = 0;
85 static int msglevel = MSG_LEVEL_INFO;
88 * mac_get_cam_mask - Read a CAM mask
89 * @regs: register block for this velocity
90 * @mask: buffer to store mask
92 * Fetch the mask bits of the selected CAM and store them into the
93 * provided mask buffer.
96 static void mac_get_cam_mask(struct mac_regs __iomem * regs, u8 * mask)
100 /* Select CAM mask */
101 BYTE_REG_BITS_SET(CAMCR_PS_CAM_MASK, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
103 writeb(0, ®s->CAMADDR);
106 for (i = 0; i < 8; i++)
107 *mask++ = readb(&(regs->MARCAM[i]));
110 writeb(0, ®s->CAMADDR);
113 BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
119 * mac_set_cam_mask - Set a CAM mask
120 * @regs: register block for this velocity
121 * @mask: CAM mask to load
123 * Store a new mask into a CAM
126 static void mac_set_cam_mask(struct mac_regs __iomem * regs, u8 * mask)
129 /* Select CAM mask */
130 BYTE_REG_BITS_SET(CAMCR_PS_CAM_MASK, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
132 writeb(CAMADDR_CAMEN, ®s->CAMADDR);
134 for (i = 0; i < 8; i++) {
135 writeb(*mask++, &(regs->MARCAM[i]));
138 writeb(0, ®s->CAMADDR);
141 BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
144 static void mac_set_vlan_cam_mask(struct mac_regs __iomem * regs, u8 * mask)
147 /* Select CAM mask */
148 BYTE_REG_BITS_SET(CAMCR_PS_CAM_MASK, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
150 writeb(CAMADDR_CAMEN | CAMADDR_VCAMSL, ®s->CAMADDR);
152 for (i = 0; i < 8; i++) {
153 writeb(*mask++, &(regs->MARCAM[i]));
156 writeb(0, ®s->CAMADDR);
159 BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
163 * mac_set_cam - set CAM data
164 * @regs: register block of this velocity
166 * @addr: 2 or 6 bytes of CAM data
168 * Load an address or vlan tag into a CAM
171 static void mac_set_cam(struct mac_regs __iomem * regs, int idx, const u8 *addr)
175 /* Select CAM mask */
176 BYTE_REG_BITS_SET(CAMCR_PS_CAM_DATA, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
180 writeb(CAMADDR_CAMEN | idx, ®s->CAMADDR);
182 for (i = 0; i < 6; i++) {
183 writeb(*addr++, &(regs->MARCAM[i]));
185 BYTE_REG_BITS_ON(CAMCR_CAMWR, ®s->CAMCR);
189 writeb(0, ®s->CAMADDR);
192 BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
195 static void mac_set_vlan_cam(struct mac_regs __iomem * regs, int idx,
199 /* Select CAM mask */
200 BYTE_REG_BITS_SET(CAMCR_PS_CAM_DATA, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
204 writeb(CAMADDR_CAMEN | CAMADDR_VCAMSL | idx, ®s->CAMADDR);
205 writew(*((u16 *) addr), ®s->MARCAM[0]);
207 BYTE_REG_BITS_ON(CAMCR_CAMWR, ®s->CAMCR);
211 writeb(0, ®s->CAMADDR);
214 BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
219 * mac_wol_reset - reset WOL after exiting low power
220 * @regs: register block of this velocity
222 * Called after we drop out of wake on lan mode in order to
223 * reset the Wake on lan features. This function doesn't restore
224 * the rest of the logic from the result of sleep/wakeup
227 static void mac_wol_reset(struct mac_regs __iomem * regs)
230 /* Turn off SWPTAG right after leaving power mode */
231 BYTE_REG_BITS_OFF(STICKHW_SWPTAG, ®s->STICKHW);
232 /* clear sticky bits */
233 BYTE_REG_BITS_OFF((STICKHW_DS1 | STICKHW_DS0), ®s->STICKHW);
235 BYTE_REG_BITS_OFF(CHIPGCR_FCGMII, ®s->CHIPGCR);
236 BYTE_REG_BITS_OFF(CHIPGCR_FCMODE, ®s->CHIPGCR);
237 /* disable force PME-enable */
238 writeb(WOLCFG_PMEOVR, ®s->WOLCFGClr);
239 /* disable power-event config bit */
240 writew(0xFFFF, ®s->WOLCRClr);
241 /* clear power status */
242 writew(0xFFFF, ®s->WOLSRClr);
245 static int velocity_mii_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd);
246 static const struct ethtool_ops velocity_ethtool_ops;
249 Define module options
252 MODULE_AUTHOR("VIA Networking Technologies, Inc.");
253 MODULE_LICENSE("GPL");
254 MODULE_DESCRIPTION("VIA Networking Velocity Family Gigabit Ethernet Adapter Driver");
256 #define VELOCITY_PARAM(N,D) \
257 static int N[MAX_UNITS]=OPTION_DEFAULT;\
258 module_param_array(N, int, NULL, 0); \
259 MODULE_PARM_DESC(N, D);
261 #define RX_DESC_MIN 64
262 #define RX_DESC_MAX 255
263 #define RX_DESC_DEF 64
264 VELOCITY_PARAM(RxDescriptors, "Number of receive descriptors");
266 #define TX_DESC_MIN 16
267 #define TX_DESC_MAX 256
268 #define TX_DESC_DEF 64
269 VELOCITY_PARAM(TxDescriptors, "Number of transmit descriptors");
271 #define RX_THRESH_MIN 0
272 #define RX_THRESH_MAX 3
273 #define RX_THRESH_DEF 0
274 /* rx_thresh[] is used for controlling the receive fifo threshold.
275 0: indicate the rxfifo threshold is 128 bytes.
276 1: indicate the rxfifo threshold is 512 bytes.
277 2: indicate the rxfifo threshold is 1024 bytes.
278 3: indicate the rxfifo threshold is store & forward.
280 VELOCITY_PARAM(rx_thresh, "Receive fifo threshold");
282 #define DMA_LENGTH_MIN 0
283 #define DMA_LENGTH_MAX 7
284 #define DMA_LENGTH_DEF 0
286 /* DMA_length[] is used for controlling the DMA length
293 6: SF(flush till emply)
294 7: SF(flush till emply)
296 VELOCITY_PARAM(DMA_length, "DMA length");
298 #define IP_ALIG_DEF 0
299 /* IP_byte_align[] is used for IP header DWORD byte aligned
300 0: indicate the IP header won't be DWORD byte aligned.(Default) .
301 1: indicate the IP header will be DWORD byte aligned.
302 In some enviroment, the IP header should be DWORD byte aligned,
303 or the packet will be droped when we receive it. (eg: IPVS)
305 VELOCITY_PARAM(IP_byte_align, "Enable IP header dword aligned");
307 #define TX_CSUM_DEF 1
308 /* txcsum_offload[] is used for setting the checksum offload ability of NIC.
309 (We only support RX checksum offload now)
310 0: disable csum_offload[checksum offload
311 1: enable checksum offload. (Default)
313 VELOCITY_PARAM(txcsum_offload, "Enable transmit packet checksum offload");
315 #define FLOW_CNTL_DEF 1
316 #define FLOW_CNTL_MIN 1
317 #define FLOW_CNTL_MAX 5
319 /* flow_control[] is used for setting the flow control ability of NIC.
320 1: hardware deafult - AUTO (default). Use Hardware default value in ANAR.
321 2: enable TX flow control.
322 3: enable RX flow control.
323 4: enable RX/TX flow control.
326 VELOCITY_PARAM(flow_control, "Enable flow control ability");
328 #define MED_LNK_DEF 0
329 #define MED_LNK_MIN 0
330 #define MED_LNK_MAX 4
331 /* speed_duplex[] is used for setting the speed and duplex mode of NIC.
332 0: indicate autonegotiation for both speed and duplex mode
333 1: indicate 100Mbps half duplex mode
334 2: indicate 100Mbps full duplex mode
335 3: indicate 10Mbps half duplex mode
336 4: indicate 10Mbps full duplex mode
339 if EEPROM have been set to the force mode, this option is ignored
342 VELOCITY_PARAM(speed_duplex, "Setting the speed and duplex mode");
344 #define VAL_PKT_LEN_DEF 0
345 /* ValPktLen[] is used for setting the checksum offload ability of NIC.
346 0: Receive frame with invalid layer 2 length (Default)
347 1: Drop frame with invalid layer 2 length
349 VELOCITY_PARAM(ValPktLen, "Receiving or Drop invalid 802.3 frame");
351 #define WOL_OPT_DEF 0
352 #define WOL_OPT_MIN 0
353 #define WOL_OPT_MAX 7
354 /* wol_opts[] is used for controlling wake on lan behavior.
355 0: Wake up if recevied a magic packet. (Default)
356 1: Wake up if link status is on/off.
357 2: Wake up if recevied an arp packet.
358 4: Wake up if recevied any unicast packet.
359 Those value can be sumed up to support more than one option.
361 VELOCITY_PARAM(wol_opts, "Wake On Lan options");
363 #define INT_WORKS_DEF 20
364 #define INT_WORKS_MIN 10
365 #define INT_WORKS_MAX 64
367 VELOCITY_PARAM(int_works, "Number of packets per interrupt services");
369 static int rx_copybreak = 200;
370 module_param(rx_copybreak, int, 0644);
371 MODULE_PARM_DESC(rx_copybreak, "Copy breakpoint for copy-only-tiny-frames");
373 static void velocity_init_info(struct pci_dev *pdev, struct velocity_info *vptr,
374 const struct velocity_info_tbl *info);
375 static int velocity_get_pci_info(struct velocity_info *, struct pci_dev *pdev);
376 static void velocity_print_info(struct velocity_info *vptr);
377 static int velocity_open(struct net_device *dev);
378 static int velocity_change_mtu(struct net_device *dev, int mtu);
379 static int velocity_xmit(struct sk_buff *skb, struct net_device *dev);
380 static int velocity_intr(int irq, void *dev_instance);
381 static void velocity_set_multi(struct net_device *dev);
382 static struct net_device_stats *velocity_get_stats(struct net_device *dev);
383 static int velocity_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
384 static int velocity_close(struct net_device *dev);
385 static int velocity_receive_frame(struct velocity_info *, int idx);
386 static int velocity_alloc_rx_buf(struct velocity_info *, int idx);
387 static void velocity_free_rd_ring(struct velocity_info *vptr);
388 static void velocity_free_tx_buf(struct velocity_info *vptr, struct velocity_td_info *);
389 static int velocity_soft_reset(struct velocity_info *vptr);
390 static void mii_init(struct velocity_info *vptr, u32 mii_status);
391 static u32 velocity_get_link(struct net_device *dev);
392 static u32 velocity_get_opt_media_mode(struct velocity_info *vptr);
393 static void velocity_print_link_status(struct velocity_info *vptr);
394 static void safe_disable_mii_autopoll(struct mac_regs __iomem * regs);
395 static void velocity_shutdown(struct velocity_info *vptr);
396 static void enable_flow_control_ability(struct velocity_info *vptr);
397 static void enable_mii_autopoll(struct mac_regs __iomem * regs);
398 static int velocity_mii_read(struct mac_regs __iomem *, u8 byIdx, u16 * pdata);
399 static int velocity_mii_write(struct mac_regs __iomem *, u8 byMiiAddr, u16 data);
400 static u32 mii_check_media_mode(struct mac_regs __iomem * regs);
401 static u32 check_connection_type(struct mac_regs __iomem * regs);
402 static int velocity_set_media_mode(struct velocity_info *vptr, u32 mii_status);
406 static int velocity_suspend(struct pci_dev *pdev, pm_message_t state);
407 static int velocity_resume(struct pci_dev *pdev);
409 static DEFINE_SPINLOCK(velocity_dev_list_lock);
410 static LIST_HEAD(velocity_dev_list);
414 #if defined(CONFIG_PM) && defined(CONFIG_INET)
416 static int velocity_netdev_event(struct notifier_block *nb, unsigned long notification, void *ptr);
418 static struct notifier_block velocity_inetaddr_notifier = {
419 .notifier_call = velocity_netdev_event,
422 static void velocity_register_notifier(void)
424 register_inetaddr_notifier(&velocity_inetaddr_notifier);
427 static void velocity_unregister_notifier(void)
429 unregister_inetaddr_notifier(&velocity_inetaddr_notifier);
434 #define velocity_register_notifier() do {} while (0)
435 #define velocity_unregister_notifier() do {} while (0)
440 * Internal board variants. At the moment we have only one
443 static struct velocity_info_tbl chip_info_table[] = {
444 {CHIP_TYPE_VT6110, "VIA Networking Velocity Family Gigabit Ethernet Adapter", 1, 0x00FFFFFFUL},
449 * Describe the PCI device identifiers that we support in this
450 * device driver. Used for hotplug autoloading.
453 static const struct pci_device_id velocity_id_table[] __devinitdata = {
454 { PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_612X) },
458 MODULE_DEVICE_TABLE(pci, velocity_id_table);
461 * get_chip_name - identifier to name
462 * @id: chip identifier
464 * Given a chip identifier return a suitable description. Returns
465 * a pointer a static string valid while the driver is loaded.
468 static const char __devinit *get_chip_name(enum chip_type chip_id)
471 for (i = 0; chip_info_table[i].name != NULL; i++)
472 if (chip_info_table[i].chip_id == chip_id)
474 return chip_info_table[i].name;
478 * velocity_remove1 - device unplug
479 * @pdev: PCI device being removed
481 * Device unload callback. Called on an unplug or on module
482 * unload for each active device that is present. Disconnects
483 * the device from the network layer and frees all the resources
486 static void __devexit velocity_remove1(struct pci_dev *pdev)
488 struct net_device *dev = pci_get_drvdata(pdev);
489 struct velocity_info *vptr = netdev_priv(dev);
494 spin_lock_irqsave(&velocity_dev_list_lock, flags);
495 if (!list_empty(&velocity_dev_list))
496 list_del(&vptr->list);
497 spin_unlock_irqrestore(&velocity_dev_list_lock, flags);
499 unregister_netdev(dev);
500 iounmap(vptr->mac_regs);
501 pci_release_regions(pdev);
502 pci_disable_device(pdev);
503 pci_set_drvdata(pdev, NULL);
510 * velocity_set_int_opt - parser for integer options
511 * @opt: pointer to option value
512 * @val: value the user requested (or -1 for default)
513 * @min: lowest value allowed
514 * @max: highest value allowed
515 * @def: default value
516 * @name: property name
519 * Set an integer property in the module options. This function does
520 * all the verification and checking as well as reporting so that
521 * we don't duplicate code for each option.
524 static void __devinit velocity_set_int_opt(int *opt, int val, int min, int max, int def, char *name, char *devname)
528 else if (val < min || val > max) {
529 VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: the value of parameter %s is invalid, the valid range is (%d-%d)\n",
530 devname, name, min, max);
533 VELOCITY_PRT(MSG_LEVEL_INFO, KERN_INFO "%s: set value of parameter %s to %d\n",
540 * velocity_set_bool_opt - parser for boolean options
541 * @opt: pointer to option value
542 * @val: value the user requested (or -1 for default)
543 * @def: default value (yes/no)
544 * @flag: numeric value to set for true.
545 * @name: property name
548 * Set a boolean property in the module options. This function does
549 * all the verification and checking as well as reporting so that
550 * we don't duplicate code for each option.
553 static void __devinit velocity_set_bool_opt(u32 * opt, int val, int def, u32 flag, char *name, char *devname)
557 *opt |= (def ? flag : 0);
558 else if (val < 0 || val > 1) {
559 printk(KERN_NOTICE "%s: the value of parameter %s is invalid, the valid range is (0-1)\n",
561 *opt |= (def ? flag : 0);
563 printk(KERN_INFO "%s: set parameter %s to %s\n",
564 devname, name, val ? "TRUE" : "FALSE");
565 *opt |= (val ? flag : 0);
570 * velocity_get_options - set options on device
571 * @opts: option structure for the device
572 * @index: index of option to use in module options array
573 * @devname: device name
575 * Turn the module and command options into a single structure
576 * for the current device
579 static void __devinit velocity_get_options(struct velocity_opt *opts, int index, char *devname)
582 velocity_set_int_opt(&opts->rx_thresh, rx_thresh[index], RX_THRESH_MIN, RX_THRESH_MAX, RX_THRESH_DEF, "rx_thresh", devname);
583 velocity_set_int_opt(&opts->DMA_length, DMA_length[index], DMA_LENGTH_MIN, DMA_LENGTH_MAX, DMA_LENGTH_DEF, "DMA_length", devname);
584 velocity_set_int_opt(&opts->numrx, RxDescriptors[index], RX_DESC_MIN, RX_DESC_MAX, RX_DESC_DEF, "RxDescriptors", devname);
585 velocity_set_int_opt(&opts->numtx, TxDescriptors[index], TX_DESC_MIN, TX_DESC_MAX, TX_DESC_DEF, "TxDescriptors", devname);
587 velocity_set_bool_opt(&opts->flags, txcsum_offload[index], TX_CSUM_DEF, VELOCITY_FLAGS_TX_CSUM, "txcsum_offload", devname);
588 velocity_set_int_opt(&opts->flow_cntl, flow_control[index], FLOW_CNTL_MIN, FLOW_CNTL_MAX, FLOW_CNTL_DEF, "flow_control", devname);
589 velocity_set_bool_opt(&opts->flags, IP_byte_align[index], IP_ALIG_DEF, VELOCITY_FLAGS_IP_ALIGN, "IP_byte_align", devname);
590 velocity_set_bool_opt(&opts->flags, ValPktLen[index], VAL_PKT_LEN_DEF, VELOCITY_FLAGS_VAL_PKT_LEN, "ValPktLen", devname);
591 velocity_set_int_opt((int *) &opts->spd_dpx, speed_duplex[index], MED_LNK_MIN, MED_LNK_MAX, MED_LNK_DEF, "Media link mode", devname);
592 velocity_set_int_opt((int *) &opts->wol_opts, wol_opts[index], WOL_OPT_MIN, WOL_OPT_MAX, WOL_OPT_DEF, "Wake On Lan options", devname);
593 velocity_set_int_opt((int *) &opts->int_works, int_works[index], INT_WORKS_MIN, INT_WORKS_MAX, INT_WORKS_DEF, "Interrupt service works", devname);
594 opts->numrx = (opts->numrx & ~3);
598 * velocity_init_cam_filter - initialise CAM
599 * @vptr: velocity to program
601 * Initialize the content addressable memory used for filters. Load
602 * appropriately according to the presence of VLAN
605 static void velocity_init_cam_filter(struct velocity_info *vptr)
607 struct mac_regs __iomem * regs = vptr->mac_regs;
609 /* Turn on MCFG_PQEN, turn off MCFG_RTGOPT */
610 WORD_REG_BITS_SET(MCFG_PQEN, MCFG_RTGOPT, ®s->MCFG);
611 WORD_REG_BITS_ON(MCFG_VIDFR, ®s->MCFG);
613 /* Disable all CAMs */
614 memset(vptr->vCAMmask, 0, sizeof(u8) * 8);
615 memset(vptr->mCAMmask, 0, sizeof(u8) * 8);
616 mac_set_vlan_cam_mask(regs, vptr->vCAMmask);
617 mac_set_cam_mask(regs, vptr->mCAMmask);
621 unsigned int vid, i = 0;
623 if (!vlan_group_get_device(vptr->vlgrp, 0))
624 WORD_REG_BITS_ON(MCFG_RTGOPT, ®s->MCFG);
626 for (vid = 1; (vid < VLAN_VID_MASK); vid++) {
627 if (vlan_group_get_device(vptr->vlgrp, vid)) {
628 mac_set_vlan_cam(regs, i, (u8 *) &vid);
629 vptr->vCAMmask[i / 8] |= 0x1 << (i % 8);
630 if (++i >= VCAM_SIZE)
634 mac_set_vlan_cam_mask(regs, vptr->vCAMmask);
638 static void velocity_vlan_rx_register(struct net_device *dev,
639 struct vlan_group *grp)
641 struct velocity_info *vptr = netdev_priv(dev);
646 static void velocity_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
648 struct velocity_info *vptr = netdev_priv(dev);
650 spin_lock_irq(&vptr->lock);
651 velocity_init_cam_filter(vptr);
652 spin_unlock_irq(&vptr->lock);
655 static void velocity_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
657 struct velocity_info *vptr = netdev_priv(dev);
659 spin_lock_irq(&vptr->lock);
660 vlan_group_set_device(vptr->vlgrp, vid, NULL);
661 velocity_init_cam_filter(vptr);
662 spin_unlock_irq(&vptr->lock);
667 * velocity_rx_reset - handle a receive reset
668 * @vptr: velocity we are resetting
670 * Reset the ownership and status for the receive ring side.
671 * Hand all the receive queue to the NIC.
674 static void velocity_rx_reset(struct velocity_info *vptr)
677 struct mac_regs __iomem * regs = vptr->mac_regs;
680 vptr->rd_dirty = vptr->rd_filled = vptr->rd_curr = 0;
683 * Init state, all RD entries belong to the NIC
685 for (i = 0; i < vptr->options.numrx; ++i)
686 vptr->rd_ring[i].rdesc0.len |= OWNED_BY_NIC;
688 writew(vptr->options.numrx, ®s->RBRDU);
689 writel(vptr->rd_pool_dma, ®s->RDBaseLo);
690 writew(0, ®s->RDIdx);
691 writew(vptr->options.numrx - 1, ®s->RDCSize);
695 * velocity_init_registers - initialise MAC registers
696 * @vptr: velocity to init
697 * @type: type of initialisation (hot or cold)
699 * Initialise the MAC on a reset or on first set up on the
703 static void velocity_init_registers(struct velocity_info *vptr,
704 enum velocity_init_type type)
706 struct mac_regs __iomem * regs = vptr->mac_regs;
712 case VELOCITY_INIT_RESET:
713 case VELOCITY_INIT_WOL:
715 netif_stop_queue(vptr->dev);
718 * Reset RX to prevent RX pointer not on the 4X location
720 velocity_rx_reset(vptr);
721 mac_rx_queue_run(regs);
722 mac_rx_queue_wake(regs);
724 mii_status = velocity_get_opt_media_mode(vptr);
725 if (velocity_set_media_mode(vptr, mii_status) != VELOCITY_LINK_CHANGE) {
726 velocity_print_link_status(vptr);
727 if (!(vptr->mii_status & VELOCITY_LINK_FAIL))
728 netif_wake_queue(vptr->dev);
731 enable_flow_control_ability(vptr);
734 writel(CR0_STOP, ®s->CR0Clr);
735 writel((CR0_DPOLL | CR0_TXON | CR0_RXON | CR0_STRT),
740 case VELOCITY_INIT_COLD:
745 velocity_soft_reset(vptr);
748 mac_eeprom_reload(regs);
749 for (i = 0; i < 6; i++) {
750 writeb(vptr->dev->dev_addr[i], &(regs->PAR[i]));
753 * clear Pre_ACPI bit.
755 BYTE_REG_BITS_OFF(CFGA_PACPI, &(regs->CFGA));
756 mac_set_rx_thresh(regs, vptr->options.rx_thresh);
757 mac_set_dma_length(regs, vptr->options.DMA_length);
759 writeb(WOLCFG_SAM | WOLCFG_SAB, ®s->WOLCFGSet);
761 * Back off algorithm use original IEEE standard
763 BYTE_REG_BITS_SET(CFGB_OFSET, (CFGB_CRANDOM | CFGB_CAP | CFGB_MBA | CFGB_BAKOPT), ®s->CFGB);
768 velocity_init_cam_filter(vptr);
771 * Set packet filter: Receive directed and broadcast address
773 velocity_set_multi(vptr->dev);
776 * Enable MII auto-polling
778 enable_mii_autopoll(regs);
780 vptr->int_mask = INT_MASK_DEF;
782 writel(vptr->rd_pool_dma, ®s->RDBaseLo);
783 writew(vptr->options.numrx - 1, ®s->RDCSize);
784 mac_rx_queue_run(regs);
785 mac_rx_queue_wake(regs);
787 writew(vptr->options.numtx - 1, ®s->TDCSize);
789 for (i = 0; i < vptr->num_txq; i++) {
790 writel(vptr->td_pool_dma[i], ®s->TDBaseLo[i]);
791 mac_tx_queue_run(regs, i);
794 init_flow_control_register(vptr);
796 writel(CR0_STOP, ®s->CR0Clr);
797 writel((CR0_DPOLL | CR0_TXON | CR0_RXON | CR0_STRT), ®s->CR0Set);
799 mii_status = velocity_get_opt_media_mode(vptr);
800 netif_stop_queue(vptr->dev);
802 mii_init(vptr, mii_status);
804 if (velocity_set_media_mode(vptr, mii_status) != VELOCITY_LINK_CHANGE) {
805 velocity_print_link_status(vptr);
806 if (!(vptr->mii_status & VELOCITY_LINK_FAIL))
807 netif_wake_queue(vptr->dev);
810 enable_flow_control_ability(vptr);
811 mac_hw_mibs_init(regs);
812 mac_write_int_mask(vptr->int_mask, regs);
819 * velocity_soft_reset - soft reset
820 * @vptr: velocity to reset
822 * Kick off a soft reset of the velocity adapter and then poll
823 * until the reset sequence has completed before returning.
826 static int velocity_soft_reset(struct velocity_info *vptr)
828 struct mac_regs __iomem * regs = vptr->mac_regs;
831 writel(CR0_SFRST, ®s->CR0Set);
833 for (i = 0; i < W_MAX_TIMEOUT; i++) {
835 if (!DWORD_REG_BITS_IS_ON(CR0_SFRST, ®s->CR0Set))
839 if (i == W_MAX_TIMEOUT) {
840 writel(CR0_FORSRST, ®s->CR0Set);
841 /* FIXME: PCI POSTING */
849 * velocity_found1 - set up discovered velocity card
851 * @ent: PCI device table entry that matched
853 * Configure a discovered adapter from scratch. Return a negative
854 * errno error code on failure paths.
857 static int __devinit velocity_found1(struct pci_dev *pdev, const struct pci_device_id *ent)
859 static int first = 1;
860 struct net_device *dev;
862 const struct velocity_info_tbl *info = &chip_info_table[ent->driver_data];
863 struct velocity_info *vptr;
864 struct mac_regs __iomem * regs;
867 /* FIXME: this driver, like almost all other ethernet drivers,
868 * can support more than MAX_UNITS.
870 if (velocity_nics >= MAX_UNITS) {
871 dev_notice(&pdev->dev, "already found %d NICs.\n",
876 dev = alloc_etherdev(sizeof(struct velocity_info));
878 dev_err(&pdev->dev, "allocate net device failed.\n");
882 /* Chain it all together */
884 SET_NETDEV_DEV(dev, &pdev->dev);
885 vptr = netdev_priv(dev);
889 printk(KERN_INFO "%s Ver. %s\n",
890 VELOCITY_FULL_DRV_NAM, VELOCITY_VERSION);
891 printk(KERN_INFO "Copyright (c) 2002, 2003 VIA Networking Technologies, Inc.\n");
892 printk(KERN_INFO "Copyright (c) 2004 Red Hat Inc.\n");
896 velocity_init_info(pdev, vptr, info);
900 dev->irq = pdev->irq;
902 ret = pci_enable_device(pdev);
906 ret = velocity_get_pci_info(vptr, pdev);
908 /* error message already printed */
912 ret = pci_request_regions(pdev, VELOCITY_NAME);
914 dev_err(&pdev->dev, "No PCI resources.\n");
918 regs = ioremap(vptr->memaddr, VELOCITY_IO_SIZE);
921 goto err_release_res;
924 vptr->mac_regs = regs;
928 dev->base_addr = vptr->ioaddr;
930 for (i = 0; i < 6; i++)
931 dev->dev_addr[i] = readb(®s->PAR[i]);
934 velocity_get_options(&vptr->options, velocity_nics, dev->name);
937 * Mask out the options cannot be set to the chip
940 vptr->options.flags &= info->flags;
943 * Enable the chip specified capbilities
946 vptr->flags = vptr->options.flags | (info->flags & 0xFF000000UL);
948 vptr->wol_opts = vptr->options.wol_opts;
949 vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
951 vptr->phy_id = MII_GET_PHY_ID(vptr->mac_regs);
953 dev->irq = pdev->irq;
954 dev->open = velocity_open;
955 dev->hard_start_xmit = velocity_xmit;
956 dev->stop = velocity_close;
957 dev->get_stats = velocity_get_stats;
958 dev->set_multicast_list = velocity_set_multi;
959 dev->do_ioctl = velocity_ioctl;
960 dev->ethtool_ops = &velocity_ethtool_ops;
961 dev->change_mtu = velocity_change_mtu;
963 dev->vlan_rx_add_vid = velocity_vlan_rx_add_vid;
964 dev->vlan_rx_kill_vid = velocity_vlan_rx_kill_vid;
965 dev->vlan_rx_register = velocity_vlan_rx_register;
967 #ifdef VELOCITY_ZERO_COPY_SUPPORT
968 dev->features |= NETIF_F_SG;
970 dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER |
973 if (vptr->flags & VELOCITY_FLAGS_TX_CSUM)
974 dev->features |= NETIF_F_IP_CSUM;
976 ret = register_netdev(dev);
980 if (velocity_get_link(dev))
981 netif_carrier_off(dev);
983 velocity_print_info(vptr);
984 pci_set_drvdata(pdev, dev);
986 /* and leave the chip powered down */
988 pci_set_power_state(pdev, PCI_D3hot);
993 spin_lock_irqsave(&velocity_dev_list_lock, flags);
994 list_add(&vptr->list, &velocity_dev_list);
995 spin_unlock_irqrestore(&velocity_dev_list_lock, flags);
1005 pci_release_regions(pdev);
1007 pci_disable_device(pdev);
1014 * velocity_print_info - per driver data
1017 * Print per driver data as the kernel driver finds Velocity
1021 static void __devinit velocity_print_info(struct velocity_info *vptr)
1023 struct net_device *dev = vptr->dev;
1025 printk(KERN_INFO "%s: %s\n", dev->name, get_chip_name(vptr->chip_id));
1026 printk(KERN_INFO "%s: Ethernet Address: %2.2X:%2.2X:%2.2X:%2.2X:%2.2X:%2.2X\n",
1028 dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2],
1029 dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5]);
1033 * velocity_init_info - init private data
1035 * @vptr: Velocity info
1038 * Set up the initial velocity_info struct for the device that has been
1042 static void __devinit velocity_init_info(struct pci_dev *pdev,
1043 struct velocity_info *vptr,
1044 const struct velocity_info_tbl *info)
1046 memset(vptr, 0, sizeof(struct velocity_info));
1049 vptr->chip_id = info->chip_id;
1050 vptr->num_txq = info->txqueue;
1051 vptr->multicast_limit = MCAM_SIZE;
1052 spin_lock_init(&vptr->lock);
1053 INIT_LIST_HEAD(&vptr->list);
1057 * velocity_get_pci_info - retrieve PCI info for device
1058 * @vptr: velocity device
1059 * @pdev: PCI device it matches
1061 * Retrieve the PCI configuration space data that interests us from
1062 * the kernel PCI layer
1065 static int __devinit velocity_get_pci_info(struct velocity_info *vptr, struct pci_dev *pdev)
1067 vptr->rev_id = pdev->revision;
1069 pci_set_master(pdev);
1071 vptr->ioaddr = pci_resource_start(pdev, 0);
1072 vptr->memaddr = pci_resource_start(pdev, 1);
1074 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_IO)) {
1076 "region #0 is not an I/O resource, aborting.\n");
1080 if ((pci_resource_flags(pdev, 1) & IORESOURCE_IO)) {
1082 "region #1 is an I/O resource, aborting.\n");
1086 if (pci_resource_len(pdev, 1) < VELOCITY_IO_SIZE) {
1087 dev_err(&pdev->dev, "region #1 is too small.\n");
1096 * velocity_init_rings - set up DMA rings
1097 * @vptr: Velocity to set up
1099 * Allocate PCI mapped DMA rings for the receive and transmit layer
1103 static int velocity_init_rings(struct velocity_info *vptr)
1108 dma_addr_t pool_dma;
1112 * Allocate all RD/TD rings a single pool
1115 psize = vptr->options.numrx * sizeof(struct rx_desc) +
1116 vptr->options.numtx * sizeof(struct tx_desc) * vptr->num_txq;
1119 * pci_alloc_consistent() fulfills the requirement for 64 bytes
1122 pool = pci_alloc_consistent(vptr->pdev, psize, &pool_dma);
1125 printk(KERN_ERR "%s : DMA memory allocation failed.\n",
1130 memset(pool, 0, psize);
1132 vptr->rd_ring = (struct rx_desc *) pool;
1134 vptr->rd_pool_dma = pool_dma;
1136 tsize = vptr->options.numtx * PKT_BUF_SZ * vptr->num_txq;
1137 vptr->tx_bufs = pci_alloc_consistent(vptr->pdev, tsize,
1138 &vptr->tx_bufs_dma);
1140 if (vptr->tx_bufs == NULL) {
1141 printk(KERN_ERR "%s: DMA memory allocation failed.\n",
1143 pci_free_consistent(vptr->pdev, psize, pool, pool_dma);
1147 memset(vptr->tx_bufs, 0, vptr->options.numtx * PKT_BUF_SZ * vptr->num_txq);
1149 i = vptr->options.numrx * sizeof(struct rx_desc);
1152 for (i = 0; i < vptr->num_txq; i++) {
1153 int offset = vptr->options.numtx * sizeof(struct tx_desc);
1155 vptr->td_pool_dma[i] = pool_dma;
1156 vptr->td_rings[i] = (struct tx_desc *) pool;
1164 * velocity_free_rings - free PCI ring pointers
1165 * @vptr: Velocity to free from
1167 * Clean up the PCI ring buffers allocated to this velocity.
1170 static void velocity_free_rings(struct velocity_info *vptr)
1174 size = vptr->options.numrx * sizeof(struct rx_desc) +
1175 vptr->options.numtx * sizeof(struct tx_desc) * vptr->num_txq;
1177 pci_free_consistent(vptr->pdev, size, vptr->rd_ring, vptr->rd_pool_dma);
1179 size = vptr->options.numtx * PKT_BUF_SZ * vptr->num_txq;
1181 pci_free_consistent(vptr->pdev, size, vptr->tx_bufs, vptr->tx_bufs_dma);
1184 static inline void velocity_give_many_rx_descs(struct velocity_info *vptr)
1186 struct mac_regs __iomem *regs = vptr->mac_regs;
1187 int avail, dirty, unusable;
1190 * RD number must be equal to 4X per hardware spec
1191 * (programming guide rev 1.20, p.13)
1193 if (vptr->rd_filled < 4)
1198 unusable = vptr->rd_filled & 0x0003;
1199 dirty = vptr->rd_dirty - unusable;
1200 for (avail = vptr->rd_filled & 0xfffc; avail; avail--) {
1201 dirty = (dirty > 0) ? dirty - 1 : vptr->options.numrx - 1;
1202 vptr->rd_ring[dirty].rdesc0.len |= OWNED_BY_NIC;
1205 writew(vptr->rd_filled & 0xfffc, ®s->RBRDU);
1206 vptr->rd_filled = unusable;
1209 static int velocity_rx_refill(struct velocity_info *vptr)
1211 int dirty = vptr->rd_dirty, done = 0, ret = 0;
1214 struct rx_desc *rd = vptr->rd_ring + dirty;
1216 /* Fine for an all zero Rx desc at init time as well */
1217 if (rd->rdesc0.len & OWNED_BY_NIC)
1220 if (!vptr->rd_info[dirty].skb) {
1221 ret = velocity_alloc_rx_buf(vptr, dirty);
1226 dirty = (dirty < vptr->options.numrx - 1) ? dirty + 1 : 0;
1227 } while (dirty != vptr->rd_curr);
1230 vptr->rd_dirty = dirty;
1231 vptr->rd_filled += done;
1232 velocity_give_many_rx_descs(vptr);
1239 * velocity_init_rd_ring - set up receive ring
1240 * @vptr: velocity to configure
1242 * Allocate and set up the receive buffers for each ring slot and
1243 * assign them to the network adapter.
1246 static int velocity_init_rd_ring(struct velocity_info *vptr)
1249 int mtu = vptr->dev->mtu;
1251 vptr->rx_buf_sz = (mtu <= ETH_DATA_LEN) ? PKT_BUF_SZ : mtu + 32;
1253 vptr->rd_info = kcalloc(vptr->options.numrx,
1254 sizeof(struct velocity_rd_info), GFP_KERNEL);
1258 vptr->rd_filled = vptr->rd_dirty = vptr->rd_curr = 0;
1260 ret = velocity_rx_refill(vptr);
1262 VELOCITY_PRT(MSG_LEVEL_ERR, KERN_ERR
1263 "%s: failed to allocate RX buffer.\n", vptr->dev->name);
1264 velocity_free_rd_ring(vptr);
1271 * velocity_free_rd_ring - free receive ring
1272 * @vptr: velocity to clean up
1274 * Free the receive buffers for each ring slot and any
1275 * attached socket buffers that need to go away.
1278 static void velocity_free_rd_ring(struct velocity_info *vptr)
1282 if (vptr->rd_info == NULL)
1285 for (i = 0; i < vptr->options.numrx; i++) {
1286 struct velocity_rd_info *rd_info = &(vptr->rd_info[i]);
1287 struct rx_desc *rd = vptr->rd_ring + i;
1289 memset(rd, 0, sizeof(*rd));
1293 pci_unmap_single(vptr->pdev, rd_info->skb_dma, vptr->rx_buf_sz,
1294 PCI_DMA_FROMDEVICE);
1295 rd_info->skb_dma = (dma_addr_t) NULL;
1297 dev_kfree_skb(rd_info->skb);
1298 rd_info->skb = NULL;
1301 kfree(vptr->rd_info);
1302 vptr->rd_info = NULL;
1306 * velocity_init_td_ring - set up transmit ring
1309 * Set up the transmit ring and chain the ring pointers together.
1310 * Returns zero on success or a negative posix errno code for
1314 static int velocity_init_td_ring(struct velocity_info *vptr)
1319 struct velocity_td_info *td_info;
1321 /* Init the TD ring entries */
1322 for (j = 0; j < vptr->num_txq; j++) {
1323 curr = vptr->td_pool_dma[j];
1325 vptr->td_infos[j] = kcalloc(vptr->options.numtx,
1326 sizeof(struct velocity_td_info),
1328 if (!vptr->td_infos[j]) {
1330 kfree(vptr->td_infos[j]);
1334 for (i = 0; i < vptr->options.numtx; i++, curr += sizeof(struct tx_desc)) {
1335 td = &(vptr->td_rings[j][i]);
1336 td_info = &(vptr->td_infos[j][i]);
1337 td_info->buf = vptr->tx_bufs +
1338 (j * vptr->options.numtx + i) * PKT_BUF_SZ;
1339 td_info->buf_dma = vptr->tx_bufs_dma +
1340 (j * vptr->options.numtx + i) * PKT_BUF_SZ;
1342 vptr->td_tail[j] = vptr->td_curr[j] = vptr->td_used[j] = 0;
1348 * FIXME: could we merge this with velocity_free_tx_buf ?
1351 static void velocity_free_td_ring_entry(struct velocity_info *vptr,
1354 struct velocity_td_info * td_info = &(vptr->td_infos[q][n]);
1357 if (td_info == NULL)
1361 for (i = 0; i < td_info->nskb_dma; i++)
1363 if (td_info->skb_dma[i]) {
1364 pci_unmap_single(vptr->pdev, td_info->skb_dma[i],
1365 td_info->skb->len, PCI_DMA_TODEVICE);
1366 td_info->skb_dma[i] = (dma_addr_t) NULL;
1369 dev_kfree_skb(td_info->skb);
1370 td_info->skb = NULL;
1375 * velocity_free_td_ring - free td ring
1378 * Free up the transmit ring for this particular velocity adapter.
1379 * We free the ring contents but not the ring itself.
1382 static void velocity_free_td_ring(struct velocity_info *vptr)
1386 for (j = 0; j < vptr->num_txq; j++) {
1387 if (vptr->td_infos[j] == NULL)
1389 for (i = 0; i < vptr->options.numtx; i++) {
1390 velocity_free_td_ring_entry(vptr, j, i);
1393 kfree(vptr->td_infos[j]);
1394 vptr->td_infos[j] = NULL;
1399 * velocity_rx_srv - service RX interrupt
1401 * @status: adapter status (unused)
1403 * Walk the receive ring of the velocity adapter and remove
1404 * any received packets from the receive queue. Hand the ring
1405 * slots back to the adapter for reuse.
1408 static int velocity_rx_srv(struct velocity_info *vptr, int status)
1410 struct net_device_stats *stats = &vptr->stats;
1411 int rd_curr = vptr->rd_curr;
1415 struct rx_desc *rd = vptr->rd_ring + rd_curr;
1417 if (!vptr->rd_info[rd_curr].skb)
1420 if (rd->rdesc0.len & OWNED_BY_NIC)
1426 * Don't drop CE or RL error frame although RXOK is off
1428 if (rd->rdesc0.RSR & (RSR_RXOK | RSR_CE | RSR_RL)) {
1429 if (velocity_receive_frame(vptr, rd_curr) < 0)
1430 stats->rx_dropped++;
1432 if (rd->rdesc0.RSR & RSR_CRC)
1433 stats->rx_crc_errors++;
1434 if (rd->rdesc0.RSR & RSR_FAE)
1435 stats->rx_frame_errors++;
1437 stats->rx_dropped++;
1440 rd->size |= RX_INTEN;
1442 vptr->dev->last_rx = jiffies;
1445 if (rd_curr >= vptr->options.numrx)
1447 } while (++works <= 15);
1449 vptr->rd_curr = rd_curr;
1451 if (works > 0 && velocity_rx_refill(vptr) < 0) {
1452 VELOCITY_PRT(MSG_LEVEL_ERR, KERN_ERR
1453 "%s: rx buf allocation failure\n", vptr->dev->name);
1461 * velocity_rx_csum - checksum process
1462 * @rd: receive packet descriptor
1463 * @skb: network layer packet buffer
1465 * Process the status bits for the received packet and determine
1466 * if the checksum was computed and verified by the hardware
1469 static inline void velocity_rx_csum(struct rx_desc *rd, struct sk_buff *skb)
1471 skb->ip_summed = CHECKSUM_NONE;
1473 if (rd->rdesc1.CSM & CSM_IPKT) {
1474 if (rd->rdesc1.CSM & CSM_IPOK) {
1475 if ((rd->rdesc1.CSM & CSM_TCPKT) ||
1476 (rd->rdesc1.CSM & CSM_UDPKT)) {
1477 if (!(rd->rdesc1.CSM & CSM_TUPOK)) {
1481 skb->ip_summed = CHECKSUM_UNNECESSARY;
1487 * velocity_rx_copy - in place Rx copy for small packets
1488 * @rx_skb: network layer packet buffer candidate
1489 * @pkt_size: received data size
1490 * @rd: receive packet descriptor
1491 * @dev: network device
1493 * Replace the current skb that is scheduled for Rx processing by a
1494 * shorter, immediatly allocated skb, if the received packet is small
1495 * enough. This function returns a negative value if the received
1496 * packet is too big or if memory is exhausted.
1498 static int velocity_rx_copy(struct sk_buff **rx_skb, int pkt_size,
1499 struct velocity_info *vptr)
1502 if (pkt_size < rx_copybreak) {
1503 struct sk_buff *new_skb;
1505 new_skb = netdev_alloc_skb(vptr->dev, pkt_size + 2);
1507 new_skb->ip_summed = rx_skb[0]->ip_summed;
1508 skb_reserve(new_skb, 2);
1509 skb_copy_from_linear_data(*rx_skb, new_skb->data, pkt_size);
1519 * velocity_iph_realign - IP header alignment
1520 * @vptr: velocity we are handling
1521 * @skb: network layer packet buffer
1522 * @pkt_size: received data size
1524 * Align IP header on a 2 bytes boundary. This behavior can be
1525 * configured by the user.
1527 static inline void velocity_iph_realign(struct velocity_info *vptr,
1528 struct sk_buff *skb, int pkt_size)
1530 /* FIXME - memmove ? */
1531 if (vptr->flags & VELOCITY_FLAGS_IP_ALIGN) {
1534 for (i = pkt_size; i >= 0; i--)
1535 *(skb->data + i + 2) = *(skb->data + i);
1536 skb_reserve(skb, 2);
1541 * velocity_receive_frame - received packet processor
1542 * @vptr: velocity we are handling
1545 * A packet has arrived. We process the packet and if appropriate
1546 * pass the frame up the network stack
1549 static int velocity_receive_frame(struct velocity_info *vptr, int idx)
1551 void (*pci_action)(struct pci_dev *, dma_addr_t, size_t, int);
1552 struct net_device_stats *stats = &vptr->stats;
1553 struct velocity_rd_info *rd_info = &(vptr->rd_info[idx]);
1554 struct rx_desc *rd = &(vptr->rd_ring[idx]);
1555 int pkt_len = le16_to_cpu(rd->rdesc0.len) & 0x3fff;
1556 struct sk_buff *skb;
1558 if (rd->rdesc0.RSR & (RSR_STP | RSR_EDP)) {
1559 VELOCITY_PRT(MSG_LEVEL_VERBOSE, KERN_ERR " %s : the received frame span multple RDs.\n", vptr->dev->name);
1560 stats->rx_length_errors++;
1564 if (rd->rdesc0.RSR & RSR_MAR)
1565 vptr->stats.multicast++;
1569 pci_dma_sync_single_for_cpu(vptr->pdev, rd_info->skb_dma,
1570 vptr->rx_buf_sz, PCI_DMA_FROMDEVICE);
1573 * Drop frame not meeting IEEE 802.3
1576 if (vptr->flags & VELOCITY_FLAGS_VAL_PKT_LEN) {
1577 if (rd->rdesc0.RSR & RSR_RL) {
1578 stats->rx_length_errors++;
1583 pci_action = pci_dma_sync_single_for_device;
1585 velocity_rx_csum(rd, skb);
1587 if (velocity_rx_copy(&skb, pkt_len, vptr) < 0) {
1588 velocity_iph_realign(vptr, skb, pkt_len);
1589 pci_action = pci_unmap_single;
1590 rd_info->skb = NULL;
1593 pci_action(vptr->pdev, rd_info->skb_dma, vptr->rx_buf_sz,
1594 PCI_DMA_FROMDEVICE);
1596 skb_put(skb, pkt_len - 4);
1597 skb->protocol = eth_type_trans(skb, vptr->dev);
1599 if (vptr->vlgrp && (rd->rdesc0.RSR & RSR_DETAG)) {
1600 vlan_hwaccel_rx(skb, vptr->vlgrp,
1601 swab16(le16_to_cpu(rd->rdesc1.PQTAG)));
1605 stats->rx_bytes += pkt_len;
1611 * velocity_alloc_rx_buf - allocate aligned receive buffer
1615 * Allocate a new full sized buffer for the reception of a frame and
1616 * map it into PCI space for the hardware to use. The hardware
1617 * requires *64* byte alignment of the buffer which makes life
1618 * less fun than would be ideal.
1621 static int velocity_alloc_rx_buf(struct velocity_info *vptr, int idx)
1623 struct rx_desc *rd = &(vptr->rd_ring[idx]);
1624 struct velocity_rd_info *rd_info = &(vptr->rd_info[idx]);
1626 rd_info->skb = netdev_alloc_skb(vptr->dev, vptr->rx_buf_sz + 64);
1627 if (rd_info->skb == NULL)
1631 * Do the gymnastics to get the buffer head for data at
1634 skb_reserve(rd_info->skb, (unsigned long) rd_info->skb->data & 63);
1635 rd_info->skb_dma = pci_map_single(vptr->pdev, rd_info->skb->data, vptr->rx_buf_sz, PCI_DMA_FROMDEVICE);
1638 * Fill in the descriptor to match
1641 *((u32 *) & (rd->rdesc0)) = 0;
1642 rd->size = cpu_to_le16(vptr->rx_buf_sz) | RX_INTEN;
1643 rd->pa_low = cpu_to_le32(rd_info->skb_dma);
1649 * tx_srv - transmit interrupt service
1653 * Scan the queues looking for transmitted packets that
1654 * we can complete and clean up. Update any statistics as
1658 static int velocity_tx_srv(struct velocity_info *vptr, u32 status)
1665 struct velocity_td_info *tdinfo;
1666 struct net_device_stats *stats = &vptr->stats;
1668 for (qnum = 0; qnum < vptr->num_txq; qnum++) {
1669 for (idx = vptr->td_tail[qnum]; vptr->td_used[qnum] > 0;
1670 idx = (idx + 1) % vptr->options.numtx) {
1675 td = &(vptr->td_rings[qnum][idx]);
1676 tdinfo = &(vptr->td_infos[qnum][idx]);
1678 if (td->tdesc0.len & OWNED_BY_NIC)
1684 if (td->tdesc0.TSR & TSR0_TERR) {
1686 stats->tx_dropped++;
1687 if (td->tdesc0.TSR & TSR0_CDH)
1688 stats->tx_heartbeat_errors++;
1689 if (td->tdesc0.TSR & TSR0_CRS)
1690 stats->tx_carrier_errors++;
1691 if (td->tdesc0.TSR & TSR0_ABT)
1692 stats->tx_aborted_errors++;
1693 if (td->tdesc0.TSR & TSR0_OWC)
1694 stats->tx_window_errors++;
1696 stats->tx_packets++;
1697 stats->tx_bytes += tdinfo->skb->len;
1699 velocity_free_tx_buf(vptr, tdinfo);
1700 vptr->td_used[qnum]--;
1702 vptr->td_tail[qnum] = idx;
1704 if (AVAIL_TD(vptr, qnum) < 1) {
1709 * Look to see if we should kick the transmit network
1710 * layer for more work.
1712 if (netif_queue_stopped(vptr->dev) && (full == 0)
1713 && (!(vptr->mii_status & VELOCITY_LINK_FAIL))) {
1714 netif_wake_queue(vptr->dev);
1720 * velocity_print_link_status - link status reporting
1721 * @vptr: velocity to report on
1723 * Turn the link status of the velocity card into a kernel log
1724 * description of the new link state, detailing speed and duplex
1728 static void velocity_print_link_status(struct velocity_info *vptr)
1731 if (vptr->mii_status & VELOCITY_LINK_FAIL) {
1732 VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: failed to detect cable link\n", vptr->dev->name);
1733 } else if (vptr->options.spd_dpx == SPD_DPX_AUTO) {
1734 VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: Link auto-negotiation", vptr->dev->name);
1736 if (vptr->mii_status & VELOCITY_SPEED_1000)
1737 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 1000M bps");
1738 else if (vptr->mii_status & VELOCITY_SPEED_100)
1739 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 100M bps");
1741 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 10M bps");
1743 if (vptr->mii_status & VELOCITY_DUPLEX_FULL)
1744 VELOCITY_PRT(MSG_LEVEL_INFO, " full duplex\n");
1746 VELOCITY_PRT(MSG_LEVEL_INFO, " half duplex\n");
1748 VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: Link forced", vptr->dev->name);
1749 switch (vptr->options.spd_dpx) {
1750 case SPD_DPX_100_HALF:
1751 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 100M bps half duplex\n");
1753 case SPD_DPX_100_FULL:
1754 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 100M bps full duplex\n");
1756 case SPD_DPX_10_HALF:
1757 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 10M bps half duplex\n");
1759 case SPD_DPX_10_FULL:
1760 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 10M bps full duplex\n");
1769 * velocity_error - handle error from controller
1771 * @status: card status
1773 * Process an error report from the hardware and attempt to recover
1774 * the card itself. At the moment we cannot recover from some
1775 * theoretically impossible errors but this could be fixed using
1776 * the pci_device_failed logic to bounce the hardware
1780 static void velocity_error(struct velocity_info *vptr, int status)
1783 if (status & ISR_TXSTLI) {
1784 struct mac_regs __iomem * regs = vptr->mac_regs;
1786 printk(KERN_ERR "TD structure error TDindex=%hx\n", readw(®s->TDIdx[0]));
1787 BYTE_REG_BITS_ON(TXESR_TDSTR, ®s->TXESR);
1788 writew(TRDCSR_RUN, ®s->TDCSRClr);
1789 netif_stop_queue(vptr->dev);
1791 /* FIXME: port over the pci_device_failed code and use it
1795 if (status & ISR_SRCI) {
1796 struct mac_regs __iomem * regs = vptr->mac_regs;
1799 if (vptr->options.spd_dpx == SPD_DPX_AUTO) {
1800 vptr->mii_status = check_connection_type(regs);
1803 * If it is a 3119, disable frame bursting in
1804 * halfduplex mode and enable it in fullduplex
1807 if (vptr->rev_id < REV_ID_VT3216_A0) {
1808 if (vptr->mii_status | VELOCITY_DUPLEX_FULL)
1809 BYTE_REG_BITS_ON(TCR_TB2BDIS, ®s->TCR);
1811 BYTE_REG_BITS_OFF(TCR_TB2BDIS, ®s->TCR);
1814 * Only enable CD heart beat counter in 10HD mode
1816 if (!(vptr->mii_status & VELOCITY_DUPLEX_FULL) && (vptr->mii_status & VELOCITY_SPEED_10)) {
1817 BYTE_REG_BITS_OFF(TESTCFG_HBDIS, ®s->TESTCFG);
1819 BYTE_REG_BITS_ON(TESTCFG_HBDIS, ®s->TESTCFG);
1823 * Get link status from PHYSR0
1825 linked = readb(®s->PHYSR0) & PHYSR0_LINKGD;
1828 vptr->mii_status &= ~VELOCITY_LINK_FAIL;
1829 netif_carrier_on(vptr->dev);
1831 vptr->mii_status |= VELOCITY_LINK_FAIL;
1832 netif_carrier_off(vptr->dev);
1835 velocity_print_link_status(vptr);
1836 enable_flow_control_ability(vptr);
1839 * Re-enable auto-polling because SRCI will disable
1843 enable_mii_autopoll(regs);
1845 if (vptr->mii_status & VELOCITY_LINK_FAIL)
1846 netif_stop_queue(vptr->dev);
1848 netif_wake_queue(vptr->dev);
1851 if (status & ISR_MIBFI)
1852 velocity_update_hw_mibs(vptr);
1853 if (status & ISR_LSTEI)
1854 mac_rx_queue_wake(vptr->mac_regs);
1858 * velocity_free_tx_buf - free transmit buffer
1862 * Release an transmit buffer. If the buffer was preallocated then
1863 * recycle it, if not then unmap the buffer.
1866 static void velocity_free_tx_buf(struct velocity_info *vptr, struct velocity_td_info *tdinfo)
1868 struct sk_buff *skb = tdinfo->skb;
1872 * Don't unmap the pre-allocated tx_bufs
1874 if (tdinfo->skb_dma && (tdinfo->skb_dma[0] != tdinfo->buf_dma)) {
1876 for (i = 0; i < tdinfo->nskb_dma; i++) {
1877 #ifdef VELOCITY_ZERO_COPY_SUPPORT
1878 pci_unmap_single(vptr->pdev, tdinfo->skb_dma[i], le16_to_cpu(td->tdesc1.len), PCI_DMA_TODEVICE);
1880 pci_unmap_single(vptr->pdev, tdinfo->skb_dma[i], skb->len, PCI_DMA_TODEVICE);
1882 tdinfo->skb_dma[i] = 0;
1885 dev_kfree_skb_irq(skb);
1890 * velocity_open - interface activation callback
1891 * @dev: network layer device to open
1893 * Called when the network layer brings the interface up. Returns
1894 * a negative posix error code on failure, or zero on success.
1896 * All the ring allocation and set up is done on open for this
1897 * adapter to minimise memory usage when inactive
1900 static int velocity_open(struct net_device *dev)
1902 struct velocity_info *vptr = netdev_priv(dev);
1905 ret = velocity_init_rings(vptr);
1909 ret = velocity_init_rd_ring(vptr);
1911 goto err_free_desc_rings;
1913 ret = velocity_init_td_ring(vptr);
1915 goto err_free_rd_ring;
1917 /* Ensure chip is running */
1918 pci_set_power_state(vptr->pdev, PCI_D0);
1920 velocity_init_registers(vptr, VELOCITY_INIT_COLD);
1922 ret = request_irq(vptr->pdev->irq, &velocity_intr, IRQF_SHARED,
1925 /* Power down the chip */
1926 pci_set_power_state(vptr->pdev, PCI_D3hot);
1927 goto err_free_td_ring;
1930 mac_enable_int(vptr->mac_regs);
1931 netif_start_queue(dev);
1932 vptr->flags |= VELOCITY_FLAGS_OPENED;
1937 velocity_free_td_ring(vptr);
1939 velocity_free_rd_ring(vptr);
1940 err_free_desc_rings:
1941 velocity_free_rings(vptr);
1946 * velocity_change_mtu - MTU change callback
1947 * @dev: network device
1948 * @new_mtu: desired MTU
1950 * Handle requests from the networking layer for MTU change on
1951 * this interface. It gets called on a change by the network layer.
1952 * Return zero for success or negative posix error code.
1955 static int velocity_change_mtu(struct net_device *dev, int new_mtu)
1957 struct velocity_info *vptr = netdev_priv(dev);
1958 unsigned long flags;
1959 int oldmtu = dev->mtu;
1962 if ((new_mtu < VELOCITY_MIN_MTU) || new_mtu > (VELOCITY_MAX_MTU)) {
1963 VELOCITY_PRT(MSG_LEVEL_ERR, KERN_NOTICE "%s: Invalid MTU.\n",
1968 if (!netif_running(dev)) {
1973 if (new_mtu != oldmtu) {
1974 spin_lock_irqsave(&vptr->lock, flags);
1976 netif_stop_queue(dev);
1977 velocity_shutdown(vptr);
1979 velocity_free_td_ring(vptr);
1980 velocity_free_rd_ring(vptr);
1984 ret = velocity_init_rd_ring(vptr);
1988 ret = velocity_init_td_ring(vptr);
1992 velocity_init_registers(vptr, VELOCITY_INIT_COLD);
1994 mac_enable_int(vptr->mac_regs);
1995 netif_start_queue(dev);
1997 spin_unlock_irqrestore(&vptr->lock, flags);
2004 * velocity_shutdown - shut down the chip
2005 * @vptr: velocity to deactivate
2007 * Shuts down the internal operations of the velocity and
2008 * disables interrupts, autopolling, transmit and receive
2011 static void velocity_shutdown(struct velocity_info *vptr)
2013 struct mac_regs __iomem * regs = vptr->mac_regs;
2014 mac_disable_int(regs);
2015 writel(CR0_STOP, ®s->CR0Set);
2016 writew(0xFFFF, ®s->TDCSRClr);
2017 writeb(0xFF, ®s->RDCSRClr);
2018 safe_disable_mii_autopoll(regs);
2019 mac_clear_isr(regs);
2023 * velocity_close - close adapter callback
2024 * @dev: network device
2026 * Callback from the network layer when the velocity is being
2027 * deactivated by the network layer
2030 static int velocity_close(struct net_device *dev)
2032 struct velocity_info *vptr = netdev_priv(dev);
2034 netif_stop_queue(dev);
2035 velocity_shutdown(vptr);
2037 if (vptr->flags & VELOCITY_FLAGS_WOL_ENABLED)
2038 velocity_get_ip(vptr);
2040 free_irq(dev->irq, dev);
2042 /* Power down the chip */
2043 pci_set_power_state(vptr->pdev, PCI_D3hot);
2045 /* Free the resources */
2046 velocity_free_td_ring(vptr);
2047 velocity_free_rd_ring(vptr);
2048 velocity_free_rings(vptr);
2050 vptr->flags &= (~VELOCITY_FLAGS_OPENED);
2055 * velocity_xmit - transmit packet callback
2056 * @skb: buffer to transmit
2057 * @dev: network device
2059 * Called by the networ layer to request a packet is queued to
2060 * the velocity. Returns zero on success.
2063 static int velocity_xmit(struct sk_buff *skb, struct net_device *dev)
2065 struct velocity_info *vptr = netdev_priv(dev);
2067 struct tx_desc *td_ptr;
2068 struct velocity_td_info *tdinfo;
2069 unsigned long flags;
2071 int pktlen = skb->len;
2072 __le16 len = cpu_to_le16(pktlen);
2074 #ifdef VELOCITY_ZERO_COPY_SUPPORT
2075 if (skb_shinfo(skb)->nr_frags > 6 && __skb_linearize(skb)) {
2081 spin_lock_irqsave(&vptr->lock, flags);
2083 index = vptr->td_curr[qnum];
2084 td_ptr = &(vptr->td_rings[qnum][index]);
2085 tdinfo = &(vptr->td_infos[qnum][index]);
2087 td_ptr->tdesc1.TCR = TCR0_TIC;
2088 td_ptr->td_buf[0].size &= ~TD_QUEUE;
2093 if (pktlen < ETH_ZLEN) {
2094 /* Cannot occur until ZC support */
2096 len = cpu_to_le16(ETH_ZLEN);
2097 skb_copy_from_linear_data(skb, tdinfo->buf, skb->len);
2098 memset(tdinfo->buf + skb->len, 0, ETH_ZLEN - skb->len);
2100 tdinfo->skb_dma[0] = tdinfo->buf_dma;
2101 td_ptr->tdesc0.len = len;
2102 td_ptr->td_buf[0].pa_low = cpu_to_le32(tdinfo->skb_dma[0]);
2103 td_ptr->td_buf[0].pa_high = 0;
2104 td_ptr->td_buf[0].size = len; /* queue is 0 anyway */
2105 tdinfo->nskb_dma = 1;
2107 #ifdef VELOCITY_ZERO_COPY_SUPPORT
2108 if (skb_shinfo(skb)->nr_frags > 0) {
2109 int nfrags = skb_shinfo(skb)->nr_frags;
2112 skb_copy_from_linear_data(skb, tdinfo->buf, skb->len);
2113 tdinfo->skb_dma[0] = tdinfo->buf_dma;
2114 td_ptr->tdesc0.len = len;
2115 td_ptr->td_buf[0].pa_low = cpu_to_le32(tdinfo->skb_dma[0]);
2116 td_ptr->td_buf[0].pa_high = 0;
2117 td_ptr->td_buf[0].size = len; /* queue is 0 anyway */
2118 tdinfo->nskb_dma = 1;
2121 tdinfo->nskb_dma = 0;
2122 tdinfo->skb_dma[i] = pci_map_single(vptr->pdev, skb->data,
2123 skb_headlen(skb), PCI_DMA_TODEVICE);
2125 td_ptr->tdesc0.len = len;
2127 /* FIXME: support 48bit DMA later */
2128 td_ptr->td_buf[i].pa_low = cpu_to_le32(tdinfo->skb_dma);
2129 td_ptr->td_buf[i].pa_high = 0;
2130 td_ptr->td_buf[i].size = cpu_to_le16(skb_headlen(skb));
2132 for (i = 0; i < nfrags; i++) {
2133 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
2134 void *addr = (void *)page_address(frag->page) + frag->page_offset;
2136 tdinfo->skb_dma[i + 1] = pci_map_single(vptr->pdev, addr, frag->size, PCI_DMA_TODEVICE);
2138 td_ptr->td_buf[i + 1].pa_low = cpu_to_le32(tdinfo->skb_dma[i + 1]);
2139 td_ptr->td_buf[i + 1].pa_high = 0;
2140 td_ptr->td_buf[i + 1].size = cpu_to_le16(frag->size);
2142 tdinfo->nskb_dma = i - 1;
2149 * Map the linear network buffer into PCI space and
2150 * add it to the transmit ring.
2153 tdinfo->skb_dma[0] = pci_map_single(vptr->pdev, skb->data, pktlen, PCI_DMA_TODEVICE);
2154 td_ptr->tdesc0.len = len;
2155 td_ptr->td_buf[0].pa_low = cpu_to_le32(tdinfo->skb_dma[0]);
2156 td_ptr->td_buf[0].pa_high = 0;
2157 td_ptr->td_buf[0].size = len;
2158 tdinfo->nskb_dma = 1;
2160 td_ptr->tdesc1.cmd = TCPLS_NORMAL + (tdinfo->nskb_dma + 1) * 16;
2162 if (vptr->vlgrp && vlan_tx_tag_present(skb)) {
2163 td_ptr->tdesc1.vlan = cpu_to_le16(vlan_tx_tag_get(skb));
2164 td_ptr->tdesc1.TCR |= TCR0_VETAG;
2168 * Handle hardware checksum
2170 if ((vptr->flags & VELOCITY_FLAGS_TX_CSUM)
2171 && (skb->ip_summed == CHECKSUM_PARTIAL)) {
2172 const struct iphdr *ip = ip_hdr(skb);
2173 if (ip->protocol == IPPROTO_TCP)
2174 td_ptr->tdesc1.TCR |= TCR0_TCPCK;
2175 else if (ip->protocol == IPPROTO_UDP)
2176 td_ptr->tdesc1.TCR |= (TCR0_UDPCK);
2177 td_ptr->tdesc1.TCR |= TCR0_IPCK;
2181 int prev = index - 1;
2184 prev = vptr->options.numtx - 1;
2185 td_ptr->tdesc0.len |= OWNED_BY_NIC;
2186 vptr->td_used[qnum]++;
2187 vptr->td_curr[qnum] = (index + 1) % vptr->options.numtx;
2189 if (AVAIL_TD(vptr, qnum) < 1)
2190 netif_stop_queue(dev);
2192 td_ptr = &(vptr->td_rings[qnum][prev]);
2193 td_ptr->td_buf[0].size |= TD_QUEUE;
2194 mac_tx_queue_wake(vptr->mac_regs, qnum);
2196 dev->trans_start = jiffies;
2197 spin_unlock_irqrestore(&vptr->lock, flags);
2202 * velocity_intr - interrupt callback
2203 * @irq: interrupt number
2204 * @dev_instance: interrupting device
2206 * Called whenever an interrupt is generated by the velocity
2207 * adapter IRQ line. We may not be the source of the interrupt
2208 * and need to identify initially if we are, and if not exit as
2209 * efficiently as possible.
2212 static int velocity_intr(int irq, void *dev_instance)
2214 struct net_device *dev = dev_instance;
2215 struct velocity_info *vptr = netdev_priv(dev);
2220 spin_lock(&vptr->lock);
2221 isr_status = mac_read_isr(vptr->mac_regs);
2224 if (isr_status == 0) {
2225 spin_unlock(&vptr->lock);
2229 mac_disable_int(vptr->mac_regs);
2232 * Keep processing the ISR until we have completed
2233 * processing and the isr_status becomes zero
2236 while (isr_status != 0) {
2237 mac_write_isr(vptr->mac_regs, isr_status);
2238 if (isr_status & (~(ISR_PRXI | ISR_PPRXI | ISR_PTXI | ISR_PPTXI)))
2239 velocity_error(vptr, isr_status);
2240 if (isr_status & (ISR_PRXI | ISR_PPRXI))
2241 max_count += velocity_rx_srv(vptr, isr_status);
2242 if (isr_status & (ISR_PTXI | ISR_PPTXI))
2243 max_count += velocity_tx_srv(vptr, isr_status);
2244 isr_status = mac_read_isr(vptr->mac_regs);
2245 if (max_count > vptr->options.int_works)
2247 printk(KERN_WARNING "%s: excessive work at interrupt.\n",
2252 spin_unlock(&vptr->lock);
2253 mac_enable_int(vptr->mac_regs);
2260 * velocity_set_multi - filter list change callback
2261 * @dev: network device
2263 * Called by the network layer when the filter lists need to change
2264 * for a velocity adapter. Reload the CAMs with the new address
2268 static void velocity_set_multi(struct net_device *dev)
2270 struct velocity_info *vptr = netdev_priv(dev);
2271 struct mac_regs __iomem * regs = vptr->mac_regs;
2274 struct dev_mc_list *mclist;
2276 if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */
2277 writel(0xffffffff, ®s->MARCAM[0]);
2278 writel(0xffffffff, ®s->MARCAM[4]);
2279 rx_mode = (RCR_AM | RCR_AB | RCR_PROM);
2280 } else if ((dev->mc_count > vptr->multicast_limit)
2281 || (dev->flags & IFF_ALLMULTI)) {
2282 writel(0xffffffff, ®s->MARCAM[0]);
2283 writel(0xffffffff, ®s->MARCAM[4]);
2284 rx_mode = (RCR_AM | RCR_AB);
2286 int offset = MCAM_SIZE - vptr->multicast_limit;
2287 mac_get_cam_mask(regs, vptr->mCAMmask);
2289 for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count; i++, mclist = mclist->next) {
2290 mac_set_cam(regs, i + offset, mclist->dmi_addr);
2291 vptr->mCAMmask[(offset + i) / 8] |= 1 << ((offset + i) & 7);
2294 mac_set_cam_mask(regs, vptr->mCAMmask);
2295 rx_mode = (RCR_AM | RCR_AB);
2297 if (dev->mtu > 1500)
2300 BYTE_REG_BITS_ON(rx_mode, ®s->RCR);
2305 * velocity_get_status - statistics callback
2306 * @dev: network device
2308 * Callback from the network layer to allow driver statistics
2309 * to be resynchronized with hardware collected state. In the
2310 * case of the velocity we need to pull the MIB counters from
2311 * the hardware into the counters before letting the network
2312 * layer display them.
2315 static struct net_device_stats *velocity_get_stats(struct net_device *dev)
2317 struct velocity_info *vptr = netdev_priv(dev);
2319 /* If the hardware is down, don't touch MII */
2320 if(!netif_running(dev))
2321 return &vptr->stats;
2323 spin_lock_irq(&vptr->lock);
2324 velocity_update_hw_mibs(vptr);
2325 spin_unlock_irq(&vptr->lock);
2327 vptr->stats.rx_packets = vptr->mib_counter[HW_MIB_ifRxAllPkts];
2328 vptr->stats.rx_errors = vptr->mib_counter[HW_MIB_ifRxErrorPkts];
2329 vptr->stats.rx_length_errors = vptr->mib_counter[HW_MIB_ifInRangeLengthErrors];
2331 // unsigned long rx_dropped; /* no space in linux buffers */
2332 vptr->stats.collisions = vptr->mib_counter[HW_MIB_ifTxEtherCollisions];
2333 /* detailed rx_errors: */
2334 // unsigned long rx_length_errors;
2335 // unsigned long rx_over_errors; /* receiver ring buff overflow */
2336 vptr->stats.rx_crc_errors = vptr->mib_counter[HW_MIB_ifRxPktCRCE];
2337 // unsigned long rx_frame_errors; /* recv'd frame alignment error */
2338 // unsigned long rx_fifo_errors; /* recv'r fifo overrun */
2339 // unsigned long rx_missed_errors; /* receiver missed packet */
2341 /* detailed tx_errors */
2342 // unsigned long tx_fifo_errors;
2344 return &vptr->stats;
2349 * velocity_ioctl - ioctl entry point
2350 * @dev: network device
2351 * @rq: interface request ioctl
2352 * @cmd: command code
2354 * Called when the user issues an ioctl request to the network
2355 * device in question. The velocity interface supports MII.
2358 static int velocity_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2360 struct velocity_info *vptr = netdev_priv(dev);
2363 /* If we are asked for information and the device is power
2364 saving then we need to bring the device back up to talk to it */
2366 if (!netif_running(dev))
2367 pci_set_power_state(vptr->pdev, PCI_D0);
2370 case SIOCGMIIPHY: /* Get address of MII PHY in use. */
2371 case SIOCGMIIREG: /* Read MII PHY register. */
2372 case SIOCSMIIREG: /* Write to MII PHY register. */
2373 ret = velocity_mii_ioctl(dev, rq, cmd);
2379 if (!netif_running(dev))
2380 pci_set_power_state(vptr->pdev, PCI_D3hot);
2387 * Definition for our device driver. The PCI layer interface
2388 * uses this to handle all our card discover and plugging
2391 static struct pci_driver velocity_driver = {
2392 .name = VELOCITY_NAME,
2393 .id_table = velocity_id_table,
2394 .probe = velocity_found1,
2395 .remove = __devexit_p(velocity_remove1),
2397 .suspend = velocity_suspend,
2398 .resume = velocity_resume,
2403 * velocity_init_module - load time function
2405 * Called when the velocity module is loaded. The PCI driver
2406 * is registered with the PCI layer, and in turn will call
2407 * the probe functions for each velocity adapter installed
2411 static int __init velocity_init_module(void)
2415 velocity_register_notifier();
2416 ret = pci_register_driver(&velocity_driver);
2418 velocity_unregister_notifier();
2423 * velocity_cleanup - module unload
2425 * When the velocity hardware is unloaded this function is called.
2426 * It will clean up the notifiers and the unregister the PCI
2427 * driver interface for this hardware. This in turn cleans up
2428 * all discovered interfaces before returning from the function
2431 static void __exit velocity_cleanup_module(void)
2433 velocity_unregister_notifier();
2434 pci_unregister_driver(&velocity_driver);
2437 module_init(velocity_init_module);
2438 module_exit(velocity_cleanup_module);
2442 * MII access , media link mode setting functions
2447 * mii_init - set up MII
2448 * @vptr: velocity adapter
2449 * @mii_status: links tatus
2451 * Set up the PHY for the current link state.
2454 static void mii_init(struct velocity_info *vptr, u32 mii_status)
2458 switch (PHYID_GET_PHY_ID(vptr->phy_id)) {
2459 case PHYID_CICADA_CS8201:
2461 * Reset to hardware default
2463 MII_REG_BITS_OFF((ANAR_ASMDIR | ANAR_PAUSE), MII_REG_ANAR, vptr->mac_regs);
2465 * Turn on ECHODIS bit in NWay-forced full mode and turn it
2466 * off it in NWay-forced half mode for NWay-forced v.s.
2467 * legacy-forced issue.
2469 if (vptr->mii_status & VELOCITY_DUPLEX_FULL)
2470 MII_REG_BITS_ON(TCSR_ECHODIS, MII_REG_TCSR, vptr->mac_regs);
2472 MII_REG_BITS_OFF(TCSR_ECHODIS, MII_REG_TCSR, vptr->mac_regs);
2474 * Turn on Link/Activity LED enable bit for CIS8201
2476 MII_REG_BITS_ON(PLED_LALBE, MII_REG_PLED, vptr->mac_regs);
2478 case PHYID_VT3216_32BIT:
2479 case PHYID_VT3216_64BIT:
2481 * Reset to hardware default
2483 MII_REG_BITS_ON((ANAR_ASMDIR | ANAR_PAUSE), MII_REG_ANAR, vptr->mac_regs);
2485 * Turn on ECHODIS bit in NWay-forced full mode and turn it
2486 * off it in NWay-forced half mode for NWay-forced v.s.
2487 * legacy-forced issue
2489 if (vptr->mii_status & VELOCITY_DUPLEX_FULL)
2490 MII_REG_BITS_ON(TCSR_ECHODIS, MII_REG_TCSR, vptr->mac_regs);
2492 MII_REG_BITS_OFF(TCSR_ECHODIS, MII_REG_TCSR, vptr->mac_regs);
2495 case PHYID_MARVELL_1000:
2496 case PHYID_MARVELL_1000S:
2498 * Assert CRS on Transmit
2500 MII_REG_BITS_ON(PSCR_ACRSTX, MII_REG_PSCR, vptr->mac_regs);
2502 * Reset to hardware default
2504 MII_REG_BITS_ON((ANAR_ASMDIR | ANAR_PAUSE), MII_REG_ANAR, vptr->mac_regs);
2509 velocity_mii_read(vptr->mac_regs, MII_REG_BMCR, &BMCR);
2510 if (BMCR & BMCR_ISO) {
2512 velocity_mii_write(vptr->mac_regs, MII_REG_BMCR, BMCR);
2517 * safe_disable_mii_autopoll - autopoll off
2518 * @regs: velocity registers
2520 * Turn off the autopoll and wait for it to disable on the chip
2523 static void safe_disable_mii_autopoll(struct mac_regs __iomem * regs)
2527 /* turn off MAUTO */
2528 writeb(0, ®s->MIICR);
2529 for (ww = 0; ww < W_MAX_TIMEOUT; ww++) {
2531 if (BYTE_REG_BITS_IS_ON(MIISR_MIDLE, ®s->MIISR))
2537 * enable_mii_autopoll - turn on autopolling
2538 * @regs: velocity registers
2540 * Enable the MII link status autopoll feature on the Velocity
2541 * hardware. Wait for it to enable.
2544 static void enable_mii_autopoll(struct mac_regs __iomem * regs)
2548 writeb(0, &(regs->MIICR));
2549 writeb(MIIADR_SWMPL, ®s->MIIADR);
2551 for (ii = 0; ii < W_MAX_TIMEOUT; ii++) {
2553 if (BYTE_REG_BITS_IS_ON(MIISR_MIDLE, ®s->MIISR))
2557 writeb(MIICR_MAUTO, ®s->MIICR);
2559 for (ii = 0; ii < W_MAX_TIMEOUT; ii++) {
2561 if (!BYTE_REG_BITS_IS_ON(MIISR_MIDLE, ®s->MIISR))
2568 * velocity_mii_read - read MII data
2569 * @regs: velocity registers
2570 * @index: MII register index
2571 * @data: buffer for received data
2573 * Perform a single read of an MII 16bit register. Returns zero
2574 * on success or -ETIMEDOUT if the PHY did not respond.
2577 static int velocity_mii_read(struct mac_regs __iomem *regs, u8 index, u16 *data)
2582 * Disable MIICR_MAUTO, so that mii addr can be set normally
2584 safe_disable_mii_autopoll(regs);
2586 writeb(index, ®s->MIIADR);
2588 BYTE_REG_BITS_ON(MIICR_RCMD, ®s->MIICR);
2590 for (ww = 0; ww < W_MAX_TIMEOUT; ww++) {
2591 if (!(readb(®s->MIICR) & MIICR_RCMD))
2595 *data = readw(®s->MIIDATA);
2597 enable_mii_autopoll(regs);
2598 if (ww == W_MAX_TIMEOUT)
2604 * velocity_mii_write - write MII data
2605 * @regs: velocity registers
2606 * @index: MII register index
2607 * @data: 16bit data for the MII register
2609 * Perform a single write to an MII 16bit register. Returns zero
2610 * on success or -ETIMEDOUT if the PHY did not respond.
2613 static int velocity_mii_write(struct mac_regs __iomem *regs, u8 mii_addr, u16 data)
2618 * Disable MIICR_MAUTO, so that mii addr can be set normally
2620 safe_disable_mii_autopoll(regs);
2622 /* MII reg offset */
2623 writeb(mii_addr, ®s->MIIADR);
2625 writew(data, ®s->MIIDATA);
2627 /* turn on MIICR_WCMD */
2628 BYTE_REG_BITS_ON(MIICR_WCMD, ®s->MIICR);
2630 /* W_MAX_TIMEOUT is the timeout period */
2631 for (ww = 0; ww < W_MAX_TIMEOUT; ww++) {
2633 if (!(readb(®s->MIICR) & MIICR_WCMD))
2636 enable_mii_autopoll(regs);
2638 if (ww == W_MAX_TIMEOUT)
2644 * velocity_get_opt_media_mode - get media selection
2645 * @vptr: velocity adapter
2647 * Get the media mode stored in EEPROM or module options and load
2648 * mii_status accordingly. The requested link state information
2652 static u32 velocity_get_opt_media_mode(struct velocity_info *vptr)
2656 switch (vptr->options.spd_dpx) {
2658 status = VELOCITY_AUTONEG_ENABLE;
2660 case SPD_DPX_100_FULL:
2661 status = VELOCITY_SPEED_100 | VELOCITY_DUPLEX_FULL;
2663 case SPD_DPX_10_FULL:
2664 status = VELOCITY_SPEED_10 | VELOCITY_DUPLEX_FULL;
2666 case SPD_DPX_100_HALF:
2667 status = VELOCITY_SPEED_100;
2669 case SPD_DPX_10_HALF:
2670 status = VELOCITY_SPEED_10;
2673 vptr->mii_status = status;
2678 * mii_set_auto_on - autonegotiate on
2681 * Enable autonegotation on this interface
2684 static void mii_set_auto_on(struct velocity_info *vptr)
2686 if (MII_REG_BITS_IS_ON(BMCR_AUTO, MII_REG_BMCR, vptr->mac_regs))
2687 MII_REG_BITS_ON(BMCR_REAUTO, MII_REG_BMCR, vptr->mac_regs);
2689 MII_REG_BITS_ON(BMCR_AUTO, MII_REG_BMCR, vptr->mac_regs);
2694 static void mii_set_auto_off(struct velocity_info * vptr)
2696 MII_REG_BITS_OFF(BMCR_AUTO, MII_REG_BMCR, vptr->mac_regs);
2701 * set_mii_flow_control - flow control setup
2702 * @vptr: velocity interface
2704 * Set up the flow control on this interface according to
2705 * the supplied user/eeprom options.
2708 static void set_mii_flow_control(struct velocity_info *vptr)
2710 /*Enable or Disable PAUSE in ANAR */
2711 switch (vptr->options.flow_cntl) {
2713 MII_REG_BITS_OFF(ANAR_PAUSE, MII_REG_ANAR, vptr->mac_regs);
2714 MII_REG_BITS_ON(ANAR_ASMDIR, MII_REG_ANAR, vptr->mac_regs);
2718 MII_REG_BITS_ON(ANAR_PAUSE, MII_REG_ANAR, vptr->mac_regs);
2719 MII_REG_BITS_ON(ANAR_ASMDIR, MII_REG_ANAR, vptr->mac_regs);
2722 case FLOW_CNTL_TX_RX:
2723 MII_REG_BITS_ON(ANAR_PAUSE, MII_REG_ANAR, vptr->mac_regs);
2724 MII_REG_BITS_ON(ANAR_ASMDIR, MII_REG_ANAR, vptr->mac_regs);
2727 case FLOW_CNTL_DISABLE:
2728 MII_REG_BITS_OFF(ANAR_PAUSE, MII_REG_ANAR, vptr->mac_regs);
2729 MII_REG_BITS_OFF(ANAR_ASMDIR, MII_REG_ANAR, vptr->mac_regs);
2737 * velocity_set_media_mode - set media mode
2738 * @mii_status: old MII link state
2740 * Check the media link state and configure the flow control
2741 * PHY and also velocity hardware setup accordingly. In particular
2742 * we need to set up CD polling and frame bursting.
2745 static int velocity_set_media_mode(struct velocity_info *vptr, u32 mii_status)
2748 struct mac_regs __iomem * regs = vptr->mac_regs;
2750 vptr->mii_status = mii_check_media_mode(vptr->mac_regs);
2751 curr_status = vptr->mii_status & (~VELOCITY_LINK_FAIL);
2753 /* Set mii link status */
2754 set_mii_flow_control(vptr);
2757 Check if new status is consisent with current status
2758 if (((mii_status & curr_status) & VELOCITY_AUTONEG_ENABLE)
2759 || (mii_status==curr_status)) {
2760 vptr->mii_status=mii_check_media_mode(vptr->mac_regs);
2761 vptr->mii_status=check_connection_type(vptr->mac_regs);
2762 VELOCITY_PRT(MSG_LEVEL_INFO, "Velocity link no change\n");
2767 if (PHYID_GET_PHY_ID(vptr->phy_id) == PHYID_CICADA_CS8201) {
2768 MII_REG_BITS_ON(AUXCR_MDPPS, MII_REG_AUXCR, vptr->mac_regs);
2772 * If connection type is AUTO
2774 if (mii_status & VELOCITY_AUTONEG_ENABLE) {
2775 VELOCITY_PRT(MSG_LEVEL_INFO, "Velocity is AUTO mode\n");
2776 /* clear force MAC mode bit */
2777 BYTE_REG_BITS_OFF(CHIPGCR_FCMODE, ®s->CHIPGCR);
2778 /* set duplex mode of MAC according to duplex mode of MII */
2779 MII_REG_BITS_ON(ANAR_TXFD | ANAR_TX | ANAR_10FD | ANAR_10, MII_REG_ANAR, vptr->mac_regs);
2780 MII_REG_BITS_ON(G1000CR_1000FD | G1000CR_1000, MII_REG_G1000CR, vptr->mac_regs);
2781 MII_REG_BITS_ON(BMCR_SPEED1G, MII_REG_BMCR, vptr->mac_regs);
2783 /* enable AUTO-NEGO mode */
2784 mii_set_auto_on(vptr);
2790 * 1. if it's 3119, disable frame bursting in halfduplex mode
2791 * and enable it in fullduplex mode
2792 * 2. set correct MII/GMII and half/full duplex mode in CHIPGCR
2793 * 3. only enable CD heart beat counter in 10HD mode
2796 /* set force MAC mode bit */
2797 BYTE_REG_BITS_ON(CHIPGCR_FCMODE, ®s->CHIPGCR);
2799 CHIPGCR = readb(®s->CHIPGCR);
2800 CHIPGCR &= ~CHIPGCR_FCGMII;
2802 if (mii_status & VELOCITY_DUPLEX_FULL) {
2803 CHIPGCR |= CHIPGCR_FCFDX;
2804 writeb(CHIPGCR, ®s->CHIPGCR);
2805 VELOCITY_PRT(MSG_LEVEL_INFO, "set Velocity to forced full mode\n");
2806 if (vptr->rev_id < REV_ID_VT3216_A0)
2807 BYTE_REG_BITS_OFF(TCR_TB2BDIS, ®s->TCR);
2809 CHIPGCR &= ~CHIPGCR_FCFDX;
2810 VELOCITY_PRT(MSG_LEVEL_INFO, "set Velocity to forced half mode\n");
2811 writeb(CHIPGCR, ®s->CHIPGCR);
2812 if (vptr->rev_id < REV_ID_VT3216_A0)
2813 BYTE_REG_BITS_ON(TCR_TB2BDIS, ®s->TCR);
2816 MII_REG_BITS_OFF(G1000CR_1000FD | G1000CR_1000, MII_REG_G1000CR, vptr->mac_regs);
2818 if (!(mii_status & VELOCITY_DUPLEX_FULL) && (mii_status & VELOCITY_SPEED_10)) {
2819 BYTE_REG_BITS_OFF(TESTCFG_HBDIS, ®s->TESTCFG);
2821 BYTE_REG_BITS_ON(TESTCFG_HBDIS, ®s->TESTCFG);
2823 /* MII_REG_BITS_OFF(BMCR_SPEED1G, MII_REG_BMCR, vptr->mac_regs); */
2824 velocity_mii_read(vptr->mac_regs, MII_REG_ANAR, &ANAR);
2825 ANAR &= (~(ANAR_TXFD | ANAR_TX | ANAR_10FD | ANAR_10));
2826 if (mii_status & VELOCITY_SPEED_100) {
2827 if (mii_status & VELOCITY_DUPLEX_FULL)
2832 if (mii_status & VELOCITY_DUPLEX_FULL)
2837 velocity_mii_write(vptr->mac_regs, MII_REG_ANAR, ANAR);
2838 /* enable AUTO-NEGO mode */
2839 mii_set_auto_on(vptr);
2840 /* MII_REG_BITS_ON(BMCR_AUTO, MII_REG_BMCR, vptr->mac_regs); */
2842 /* vptr->mii_status=mii_check_media_mode(vptr->mac_regs); */
2843 /* vptr->mii_status=check_connection_type(vptr->mac_regs); */
2844 return VELOCITY_LINK_CHANGE;
2848 * mii_check_media_mode - check media state
2849 * @regs: velocity registers
2851 * Check the current MII status and determine the link status
2855 static u32 mii_check_media_mode(struct mac_regs __iomem * regs)
2860 if (!MII_REG_BITS_IS_ON(BMSR_LNK, MII_REG_BMSR, regs))
2861 status |= VELOCITY_LINK_FAIL;
2863 if (MII_REG_BITS_IS_ON(G1000CR_1000FD, MII_REG_G1000CR, regs))
2864 status |= VELOCITY_SPEED_1000 | VELOCITY_DUPLEX_FULL;
2865 else if (MII_REG_BITS_IS_ON(G1000CR_1000, MII_REG_G1000CR, regs))
2866 status |= (VELOCITY_SPEED_1000);
2868 velocity_mii_read(regs, MII_REG_ANAR, &ANAR);
2869 if (ANAR & ANAR_TXFD)
2870 status |= (VELOCITY_SPEED_100 | VELOCITY_DUPLEX_FULL);
2871 else if (ANAR & ANAR_TX)
2872 status |= VELOCITY_SPEED_100;
2873 else if (ANAR & ANAR_10FD)
2874 status |= (VELOCITY_SPEED_10 | VELOCITY_DUPLEX_FULL);
2876 status |= (VELOCITY_SPEED_10);
2879 if (MII_REG_BITS_IS_ON(BMCR_AUTO, MII_REG_BMCR, regs)) {
2880 velocity_mii_read(regs, MII_REG_ANAR, &ANAR);
2881 if ((ANAR & (ANAR_TXFD | ANAR_TX | ANAR_10FD | ANAR_10))
2882 == (ANAR_TXFD | ANAR_TX | ANAR_10FD | ANAR_10)) {
2883 if (MII_REG_BITS_IS_ON(G1000CR_1000 | G1000CR_1000FD, MII_REG_G1000CR, regs))
2884 status |= VELOCITY_AUTONEG_ENABLE;
2891 static u32 check_connection_type(struct mac_regs __iomem * regs)
2896 PHYSR0 = readb(®s->PHYSR0);
2899 if (!(PHYSR0 & PHYSR0_LINKGD))
2900 status|=VELOCITY_LINK_FAIL;
2903 if (PHYSR0 & PHYSR0_FDPX)
2904 status |= VELOCITY_DUPLEX_FULL;
2906 if (PHYSR0 & PHYSR0_SPDG)
2907 status |= VELOCITY_SPEED_1000;
2908 else if (PHYSR0 & PHYSR0_SPD10)
2909 status |= VELOCITY_SPEED_10;
2911 status |= VELOCITY_SPEED_100;
2913 if (MII_REG_BITS_IS_ON(BMCR_AUTO, MII_REG_BMCR, regs)) {
2914 velocity_mii_read(regs, MII_REG_ANAR, &ANAR);
2915 if ((ANAR & (ANAR_TXFD | ANAR_TX | ANAR_10FD | ANAR_10))
2916 == (ANAR_TXFD | ANAR_TX | ANAR_10FD | ANAR_10)) {
2917 if (MII_REG_BITS_IS_ON(G1000CR_1000 | G1000CR_1000FD, MII_REG_G1000CR, regs))
2918 status |= VELOCITY_AUTONEG_ENABLE;
2926 * enable_flow_control_ability - flow control
2927 * @vptr: veloity to configure
2929 * Set up flow control according to the flow control options
2930 * determined by the eeprom/configuration.
2933 static void enable_flow_control_ability(struct velocity_info *vptr)
2936 struct mac_regs __iomem * regs = vptr->mac_regs;
2938 switch (vptr->options.flow_cntl) {
2940 case FLOW_CNTL_DEFAULT:
2941 if (BYTE_REG_BITS_IS_ON(PHYSR0_RXFLC, ®s->PHYSR0))
2942 writel(CR0_FDXRFCEN, ®s->CR0Set);
2944 writel(CR0_FDXRFCEN, ®s->CR0Clr);
2946 if (BYTE_REG_BITS_IS_ON(PHYSR0_TXFLC, ®s->PHYSR0))
2947 writel(CR0_FDXTFCEN, ®s->CR0Set);
2949 writel(CR0_FDXTFCEN, ®s->CR0Clr);
2953 writel(CR0_FDXTFCEN, ®s->CR0Set);
2954 writel(CR0_FDXRFCEN, ®s->CR0Clr);
2958 writel(CR0_FDXRFCEN, ®s->CR0Set);
2959 writel(CR0_FDXTFCEN, ®s->CR0Clr);
2962 case FLOW_CNTL_TX_RX:
2963 writel(CR0_FDXTFCEN, ®s->CR0Set);
2964 writel(CR0_FDXRFCEN, ®s->CR0Set);
2967 case FLOW_CNTL_DISABLE:
2968 writel(CR0_FDXRFCEN, ®s->CR0Clr);
2969 writel(CR0_FDXTFCEN, ®s->CR0Clr);
2980 * velocity_ethtool_up - pre hook for ethtool
2981 * @dev: network device
2983 * Called before an ethtool operation. We need to make sure the
2984 * chip is out of D3 state before we poke at it.
2987 static int velocity_ethtool_up(struct net_device *dev)
2989 struct velocity_info *vptr = netdev_priv(dev);
2990 if (!netif_running(dev))
2991 pci_set_power_state(vptr->pdev, PCI_D0);
2996 * velocity_ethtool_down - post hook for ethtool
2997 * @dev: network device
2999 * Called after an ethtool operation. Restore the chip back to D3
3000 * state if it isn't running.
3003 static void velocity_ethtool_down(struct net_device *dev)
3005 struct velocity_info *vptr = netdev_priv(dev);
3006 if (!netif_running(dev))
3007 pci_set_power_state(vptr->pdev, PCI_D3hot);
3010 static int velocity_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
3012 struct velocity_info *vptr = netdev_priv(dev);
3013 struct mac_regs __iomem * regs = vptr->mac_regs;
3015 status = check_connection_type(vptr->mac_regs);
3017 cmd->supported = SUPPORTED_TP |
3019 SUPPORTED_10baseT_Half |
3020 SUPPORTED_10baseT_Full |
3021 SUPPORTED_100baseT_Half |
3022 SUPPORTED_100baseT_Full |
3023 SUPPORTED_1000baseT_Half |
3024 SUPPORTED_1000baseT_Full;
3025 if (status & VELOCITY_SPEED_1000)
3026 cmd->speed = SPEED_1000;
3027 else if (status & VELOCITY_SPEED_100)
3028 cmd->speed = SPEED_100;
3030 cmd->speed = SPEED_10;
3031 cmd->autoneg = (status & VELOCITY_AUTONEG_ENABLE) ? AUTONEG_ENABLE : AUTONEG_DISABLE;
3032 cmd->port = PORT_TP;
3033 cmd->transceiver = XCVR_INTERNAL;
3034 cmd->phy_address = readb(®s->MIIADR) & 0x1F;
3036 if (status & VELOCITY_DUPLEX_FULL)
3037 cmd->duplex = DUPLEX_FULL;
3039 cmd->duplex = DUPLEX_HALF;
3044 static int velocity_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
3046 struct velocity_info *vptr = netdev_priv(dev);
3051 curr_status = check_connection_type(vptr->mac_regs);
3052 curr_status &= (~VELOCITY_LINK_FAIL);
3054 new_status |= ((cmd->autoneg) ? VELOCITY_AUTONEG_ENABLE : 0);
3055 new_status |= ((cmd->speed == SPEED_100) ? VELOCITY_SPEED_100 : 0);
3056 new_status |= ((cmd->speed == SPEED_10) ? VELOCITY_SPEED_10 : 0);
3057 new_status |= ((cmd->duplex == DUPLEX_FULL) ? VELOCITY_DUPLEX_FULL : 0);
3059 if ((new_status & VELOCITY_AUTONEG_ENABLE) && (new_status != (curr_status | VELOCITY_AUTONEG_ENABLE)))
3062 velocity_set_media_mode(vptr, new_status);
3067 static u32 velocity_get_link(struct net_device *dev)
3069 struct velocity_info *vptr = netdev_priv(dev);
3070 struct mac_regs __iomem * regs = vptr->mac_regs;
3071 return BYTE_REG_BITS_IS_ON(PHYSR0_LINKGD, ®s->PHYSR0) ? 1 : 0;
3074 static void velocity_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
3076 struct velocity_info *vptr = netdev_priv(dev);
3077 strcpy(info->driver, VELOCITY_NAME);
3078 strcpy(info->version, VELOCITY_VERSION);
3079 strcpy(info->bus_info, pci_name(vptr->pdev));
3082 static void velocity_ethtool_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
3084 struct velocity_info *vptr = netdev_priv(dev);
3085 wol->supported = WAKE_PHY | WAKE_MAGIC | WAKE_UCAST | WAKE_ARP;
3086 wol->wolopts |= WAKE_MAGIC;
3088 if (vptr->wol_opts & VELOCITY_WOL_PHY)
3089 wol.wolopts|=WAKE_PHY;
3091 if (vptr->wol_opts & VELOCITY_WOL_UCAST)
3092 wol->wolopts |= WAKE_UCAST;
3093 if (vptr->wol_opts & VELOCITY_WOL_ARP)
3094 wol->wolopts |= WAKE_ARP;
3095 memcpy(&wol->sopass, vptr->wol_passwd, 6);
3098 static int velocity_ethtool_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
3100 struct velocity_info *vptr = netdev_priv(dev);
3102 if (!(wol->wolopts & (WAKE_PHY | WAKE_MAGIC | WAKE_UCAST | WAKE_ARP)))
3104 vptr->wol_opts = VELOCITY_WOL_MAGIC;
3107 if (wol.wolopts & WAKE_PHY) {
3108 vptr->wol_opts|=VELOCITY_WOL_PHY;
3109 vptr->flags |=VELOCITY_FLAGS_WOL_ENABLED;
3113 if (wol->wolopts & WAKE_MAGIC) {
3114 vptr->wol_opts |= VELOCITY_WOL_MAGIC;
3115 vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
3117 if (wol->wolopts & WAKE_UCAST) {
3118 vptr->wol_opts |= VELOCITY_WOL_UCAST;
3119 vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
3121 if (wol->wolopts & WAKE_ARP) {
3122 vptr->wol_opts |= VELOCITY_WOL_ARP;
3123 vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
3125 memcpy(vptr->wol_passwd, wol->sopass, 6);
3129 static u32 velocity_get_msglevel(struct net_device *dev)
3134 static void velocity_set_msglevel(struct net_device *dev, u32 value)
3139 static const struct ethtool_ops velocity_ethtool_ops = {
3140 .get_settings = velocity_get_settings,
3141 .set_settings = velocity_set_settings,
3142 .get_drvinfo = velocity_get_drvinfo,
3143 .get_wol = velocity_ethtool_get_wol,
3144 .set_wol = velocity_ethtool_set_wol,
3145 .get_msglevel = velocity_get_msglevel,
3146 .set_msglevel = velocity_set_msglevel,
3147 .get_link = velocity_get_link,
3148 .begin = velocity_ethtool_up,
3149 .complete = velocity_ethtool_down
3153 * velocity_mii_ioctl - MII ioctl handler
3154 * @dev: network device
3155 * @ifr: the ifreq block for the ioctl
3158 * Process MII requests made via ioctl from the network layer. These
3159 * are used by tools like kudzu to interrogate the link state of the
3163 static int velocity_mii_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
3165 struct velocity_info *vptr = netdev_priv(dev);
3166 struct mac_regs __iomem * regs = vptr->mac_regs;
3167 unsigned long flags;
3168 struct mii_ioctl_data *miidata = if_mii(ifr);
3173 miidata->phy_id = readb(®s->MIIADR) & 0x1f;
3176 if (!capable(CAP_NET_ADMIN))
3178 if(velocity_mii_read(vptr->mac_regs, miidata->reg_num & 0x1f, &(miidata->val_out)) < 0)
3182 if (!capable(CAP_NET_ADMIN))
3184 spin_lock_irqsave(&vptr->lock, flags);
3185 err = velocity_mii_write(vptr->mac_regs, miidata->reg_num & 0x1f, miidata->val_in);
3186 spin_unlock_irqrestore(&vptr->lock, flags);
3187 check_connection_type(vptr->mac_regs);
3200 * velocity_save_context - save registers
3202 * @context: buffer for stored context
3204 * Retrieve the current configuration from the velocity hardware
3205 * and stash it in the context structure, for use by the context
3206 * restore functions. This allows us to save things we need across
3210 static void velocity_save_context(struct velocity_info *vptr, struct velocity_context * context)
3212 struct mac_regs __iomem * regs = vptr->mac_regs;
3214 u8 __iomem *ptr = (u8 __iomem *)regs;
3216 for (i = MAC_REG_PAR; i < MAC_REG_CR0_CLR; i += 4)
3217 *((u32 *) (context->mac_reg + i)) = readl(ptr + i);
3219 for (i = MAC_REG_MAR; i < MAC_REG_TDCSR_CLR; i += 4)
3220 *((u32 *) (context->mac_reg + i)) = readl(ptr + i);
3222 for (i = MAC_REG_RDBASE_LO; i < MAC_REG_FIFO_TEST0; i += 4)
3223 *((u32 *) (context->mac_reg + i)) = readl(ptr + i);
3228 * velocity_restore_context - restore registers
3230 * @context: buffer for stored context
3232 * Reload the register configuration from the velocity context
3233 * created by velocity_save_context.
3236 static void velocity_restore_context(struct velocity_info *vptr, struct velocity_context *context)
3238 struct mac_regs __iomem * regs = vptr->mac_regs;
3240 u8 __iomem *ptr = (u8 __iomem *)regs;
3242 for (i = MAC_REG_PAR; i < MAC_REG_CR0_SET; i += 4) {
3243 writel(*((u32 *) (context->mac_reg + i)), ptr + i);
3247 for (i = MAC_REG_CR1_SET; i < MAC_REG_CR0_CLR; i++) {
3249 writeb(~(*((u8 *) (context->mac_reg + i))), ptr + i + 4);
3251 writeb(*((u8 *) (context->mac_reg + i)), ptr + i);
3254 for (i = MAC_REG_MAR; i < MAC_REG_IMR; i += 4) {
3255 writel(*((u32 *) (context->mac_reg + i)), ptr + i);
3258 for (i = MAC_REG_RDBASE_LO; i < MAC_REG_FIFO_TEST0; i += 4) {
3259 writel(*((u32 *) (context->mac_reg + i)), ptr + i);
3262 for (i = MAC_REG_TDCSR_SET; i <= MAC_REG_RDCSR_SET; i++) {
3263 writeb(*((u8 *) (context->mac_reg + i)), ptr + i);
3269 * wol_calc_crc - WOL CRC
3270 * @pattern: data pattern
3271 * @mask_pattern: mask
3273 * Compute the wake on lan crc hashes for the packet header
3274 * we are interested in.
3277 static u16 wol_calc_crc(int size, u8 * pattern, u8 *mask_pattern)
3283 for (i = 0; i < size; i++) {
3284 mask = mask_pattern[i];
3286 /* Skip this loop if the mask equals to zero */
3290 for (j = 0; j < 8; j++) {
3291 if ((mask & 0x01) == 0) {
3296 crc = crc_ccitt(crc, &(pattern[i * 8 + j]), 1);
3299 /* Finally, invert the result once to get the correct data */
3301 return bitrev32(crc) >> 16;
3305 * velocity_set_wol - set up for wake on lan
3306 * @vptr: velocity to set WOL status on
3308 * Set a card up for wake on lan either by unicast or by
3311 * FIXME: check static buffer is safe here
3314 static int velocity_set_wol(struct velocity_info *vptr)
3316 struct mac_regs __iomem * regs = vptr->mac_regs;
3320 static u32 mask_pattern[2][4] = {
3321 {0x00203000, 0x000003C0, 0x00000000, 0x0000000}, /* ARP */
3322 {0xfffff000, 0xffffffff, 0xffffffff, 0x000ffff} /* Magic Packet */
3325 writew(0xFFFF, ®s->WOLCRClr);
3326 writeb(WOLCFG_SAB | WOLCFG_SAM, ®s->WOLCFGSet);
3327 writew(WOLCR_MAGIC_EN, ®s->WOLCRSet);
3330 if (vptr->wol_opts & VELOCITY_WOL_PHY)
3331 writew((WOLCR_LINKON_EN|WOLCR_LINKOFF_EN), ®s->WOLCRSet);
3334 if (vptr->wol_opts & VELOCITY_WOL_UCAST) {
3335 writew(WOLCR_UNICAST_EN, ®s->WOLCRSet);
3338 if (vptr->wol_opts & VELOCITY_WOL_ARP) {
3339 struct arp_packet *arp = (struct arp_packet *) buf;
3341 memset(buf, 0, sizeof(struct arp_packet) + 7);
3343 for (i = 0; i < 4; i++)
3344 writel(mask_pattern[0][i], ®s->ByteMask[0][i]);
3346 arp->type = htons(ETH_P_ARP);
3347 arp->ar_op = htons(1);
3349 memcpy(arp->ar_tip, vptr->ip_addr, 4);
3351 crc = wol_calc_crc((sizeof(struct arp_packet) + 7) / 8, buf,
3352 (u8 *) & mask_pattern[0][0]);
3354 writew(crc, ®s->PatternCRC[0]);
3355 writew(WOLCR_ARP_EN, ®s->WOLCRSet);
3358 BYTE_REG_BITS_ON(PWCFG_WOLTYPE, ®s->PWCFGSet);
3359 BYTE_REG_BITS_ON(PWCFG_LEGACY_WOLEN, ®s->PWCFGSet);
3361 writew(0x0FFF, ®s->WOLSRClr);
3363 if (vptr->mii_status & VELOCITY_AUTONEG_ENABLE) {
3364 if (PHYID_GET_PHY_ID(vptr->phy_id) == PHYID_CICADA_CS8201)
3365 MII_REG_BITS_ON(AUXCR_MDPPS, MII_REG_AUXCR, vptr->mac_regs);
3367 MII_REG_BITS_OFF(G1000CR_1000FD | G1000CR_1000, MII_REG_G1000CR, vptr->mac_regs);
3370 if (vptr->mii_status & VELOCITY_SPEED_1000)
3371 MII_REG_BITS_ON(BMCR_REAUTO, MII_REG_BMCR, vptr->mac_regs);
3373 BYTE_REG_BITS_ON(CHIPGCR_FCMODE, ®s->CHIPGCR);
3377 GCR = readb(®s->CHIPGCR);
3378 GCR = (GCR & ~CHIPGCR_FCGMII) | CHIPGCR_FCFDX;
3379 writeb(GCR, ®s->CHIPGCR);
3382 BYTE_REG_BITS_OFF(ISR_PWEI, ®s->ISR);
3383 /* Turn on SWPTAG just before entering power mode */
3384 BYTE_REG_BITS_ON(STICKHW_SWPTAG, ®s->STICKHW);
3385 /* Go to bed ..... */
3386 BYTE_REG_BITS_ON((STICKHW_DS1 | STICKHW_DS0), ®s->STICKHW);
3391 static int velocity_suspend(struct pci_dev *pdev, pm_message_t state)
3393 struct net_device *dev = pci_get_drvdata(pdev);
3394 struct velocity_info *vptr = netdev_priv(dev);
3395 unsigned long flags;
3397 if(!netif_running(vptr->dev))
3400 netif_device_detach(vptr->dev);
3402 spin_lock_irqsave(&vptr->lock, flags);
3403 pci_save_state(pdev);
3405 if (vptr->flags & VELOCITY_FLAGS_WOL_ENABLED) {
3406 velocity_get_ip(vptr);
3407 velocity_save_context(vptr, &vptr->context);
3408 velocity_shutdown(vptr);
3409 velocity_set_wol(vptr);
3410 pci_enable_wake(pdev, PCI_D3hot, 1);
3411 pci_set_power_state(pdev, PCI_D3hot);
3413 velocity_save_context(vptr, &vptr->context);
3414 velocity_shutdown(vptr);
3415 pci_disable_device(pdev);
3416 pci_set_power_state(pdev, pci_choose_state(pdev, state));
3419 pci_set_power_state(pdev, pci_choose_state(pdev, state));
3421 spin_unlock_irqrestore(&vptr->lock, flags);
3425 static int velocity_resume(struct pci_dev *pdev)
3427 struct net_device *dev = pci_get_drvdata(pdev);
3428 struct velocity_info *vptr = netdev_priv(dev);
3429 unsigned long flags;
3432 if(!netif_running(vptr->dev))
3435 pci_set_power_state(pdev, PCI_D0);
3436 pci_enable_wake(pdev, 0, 0);
3437 pci_restore_state(pdev);
3439 mac_wol_reset(vptr->mac_regs);
3441 spin_lock_irqsave(&vptr->lock, flags);
3442 velocity_restore_context(vptr, &vptr->context);
3443 velocity_init_registers(vptr, VELOCITY_INIT_WOL);
3444 mac_disable_int(vptr->mac_regs);
3446 velocity_tx_srv(vptr, 0);
3448 for (i = 0; i < vptr->num_txq; i++) {
3449 if (vptr->td_used[i]) {
3450 mac_tx_queue_wake(vptr->mac_regs, i);
3454 mac_enable_int(vptr->mac_regs);
3455 spin_unlock_irqrestore(&vptr->lock, flags);
3456 netif_device_attach(vptr->dev);
3463 static int velocity_netdev_event(struct notifier_block *nb, unsigned long notification, void *ptr)
3465 struct in_ifaddr *ifa = (struct in_ifaddr *) ptr;
3466 struct net_device *dev = ifa->ifa_dev->dev;
3467 struct velocity_info *vptr;
3468 unsigned long flags;
3470 if (dev_net(dev) != &init_net)
3473 spin_lock_irqsave(&velocity_dev_list_lock, flags);
3474 list_for_each_entry(vptr, &velocity_dev_list, list) {
3475 if (vptr->dev == dev) {
3476 velocity_get_ip(vptr);
3480 spin_unlock_irqrestore(&velocity_dev_list_lock, flags);