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 if (vptr->flags & VELOCITY_FLAGS_IP_ALIGN) {
1531 memmove(skb->data + 2, skb->data, pkt_size);
1532 skb_reserve(skb, 2);
1537 * velocity_receive_frame - received packet processor
1538 * @vptr: velocity we are handling
1541 * A packet has arrived. We process the packet and if appropriate
1542 * pass the frame up the network stack
1545 static int velocity_receive_frame(struct velocity_info *vptr, int idx)
1547 void (*pci_action)(struct pci_dev *, dma_addr_t, size_t, int);
1548 struct net_device_stats *stats = &vptr->stats;
1549 struct velocity_rd_info *rd_info = &(vptr->rd_info[idx]);
1550 struct rx_desc *rd = &(vptr->rd_ring[idx]);
1551 int pkt_len = le16_to_cpu(rd->rdesc0.len) & 0x3fff;
1552 struct sk_buff *skb;
1554 if (rd->rdesc0.RSR & (RSR_STP | RSR_EDP)) {
1555 VELOCITY_PRT(MSG_LEVEL_VERBOSE, KERN_ERR " %s : the received frame span multple RDs.\n", vptr->dev->name);
1556 stats->rx_length_errors++;
1560 if (rd->rdesc0.RSR & RSR_MAR)
1561 vptr->stats.multicast++;
1565 pci_dma_sync_single_for_cpu(vptr->pdev, rd_info->skb_dma,
1566 vptr->rx_buf_sz, PCI_DMA_FROMDEVICE);
1569 * Drop frame not meeting IEEE 802.3
1572 if (vptr->flags & VELOCITY_FLAGS_VAL_PKT_LEN) {
1573 if (rd->rdesc0.RSR & RSR_RL) {
1574 stats->rx_length_errors++;
1579 pci_action = pci_dma_sync_single_for_device;
1581 velocity_rx_csum(rd, skb);
1583 if (velocity_rx_copy(&skb, pkt_len, vptr) < 0) {
1584 velocity_iph_realign(vptr, skb, pkt_len);
1585 pci_action = pci_unmap_single;
1586 rd_info->skb = NULL;
1589 pci_action(vptr->pdev, rd_info->skb_dma, vptr->rx_buf_sz,
1590 PCI_DMA_FROMDEVICE);
1592 skb_put(skb, pkt_len - 4);
1593 skb->protocol = eth_type_trans(skb, vptr->dev);
1595 if (vptr->vlgrp && (rd->rdesc0.RSR & RSR_DETAG)) {
1596 vlan_hwaccel_rx(skb, vptr->vlgrp,
1597 swab16(le16_to_cpu(rd->rdesc1.PQTAG)));
1601 stats->rx_bytes += pkt_len;
1607 * velocity_alloc_rx_buf - allocate aligned receive buffer
1611 * Allocate a new full sized buffer for the reception of a frame and
1612 * map it into PCI space for the hardware to use. The hardware
1613 * requires *64* byte alignment of the buffer which makes life
1614 * less fun than would be ideal.
1617 static int velocity_alloc_rx_buf(struct velocity_info *vptr, int idx)
1619 struct rx_desc *rd = &(vptr->rd_ring[idx]);
1620 struct velocity_rd_info *rd_info = &(vptr->rd_info[idx]);
1622 rd_info->skb = netdev_alloc_skb(vptr->dev, vptr->rx_buf_sz + 64);
1623 if (rd_info->skb == NULL)
1627 * Do the gymnastics to get the buffer head for data at
1630 skb_reserve(rd_info->skb, (unsigned long) rd_info->skb->data & 63);
1631 rd_info->skb_dma = pci_map_single(vptr->pdev, rd_info->skb->data, vptr->rx_buf_sz, PCI_DMA_FROMDEVICE);
1634 * Fill in the descriptor to match
1637 *((u32 *) & (rd->rdesc0)) = 0;
1638 rd->size = cpu_to_le16(vptr->rx_buf_sz) | RX_INTEN;
1639 rd->pa_low = cpu_to_le32(rd_info->skb_dma);
1645 * tx_srv - transmit interrupt service
1649 * Scan the queues looking for transmitted packets that
1650 * we can complete and clean up. Update any statistics as
1654 static int velocity_tx_srv(struct velocity_info *vptr, u32 status)
1661 struct velocity_td_info *tdinfo;
1662 struct net_device_stats *stats = &vptr->stats;
1664 for (qnum = 0; qnum < vptr->num_txq; qnum++) {
1665 for (idx = vptr->td_tail[qnum]; vptr->td_used[qnum] > 0;
1666 idx = (idx + 1) % vptr->options.numtx) {
1671 td = &(vptr->td_rings[qnum][idx]);
1672 tdinfo = &(vptr->td_infos[qnum][idx]);
1674 if (td->tdesc0.len & OWNED_BY_NIC)
1680 if (td->tdesc0.TSR & TSR0_TERR) {
1682 stats->tx_dropped++;
1683 if (td->tdesc0.TSR & TSR0_CDH)
1684 stats->tx_heartbeat_errors++;
1685 if (td->tdesc0.TSR & TSR0_CRS)
1686 stats->tx_carrier_errors++;
1687 if (td->tdesc0.TSR & TSR0_ABT)
1688 stats->tx_aborted_errors++;
1689 if (td->tdesc0.TSR & TSR0_OWC)
1690 stats->tx_window_errors++;
1692 stats->tx_packets++;
1693 stats->tx_bytes += tdinfo->skb->len;
1695 velocity_free_tx_buf(vptr, tdinfo);
1696 vptr->td_used[qnum]--;
1698 vptr->td_tail[qnum] = idx;
1700 if (AVAIL_TD(vptr, qnum) < 1) {
1705 * Look to see if we should kick the transmit network
1706 * layer for more work.
1708 if (netif_queue_stopped(vptr->dev) && (full == 0)
1709 && (!(vptr->mii_status & VELOCITY_LINK_FAIL))) {
1710 netif_wake_queue(vptr->dev);
1716 * velocity_print_link_status - link status reporting
1717 * @vptr: velocity to report on
1719 * Turn the link status of the velocity card into a kernel log
1720 * description of the new link state, detailing speed and duplex
1724 static void velocity_print_link_status(struct velocity_info *vptr)
1727 if (vptr->mii_status & VELOCITY_LINK_FAIL) {
1728 VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: failed to detect cable link\n", vptr->dev->name);
1729 } else if (vptr->options.spd_dpx == SPD_DPX_AUTO) {
1730 VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: Link auto-negotiation", vptr->dev->name);
1732 if (vptr->mii_status & VELOCITY_SPEED_1000)
1733 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 1000M bps");
1734 else if (vptr->mii_status & VELOCITY_SPEED_100)
1735 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 100M bps");
1737 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 10M bps");
1739 if (vptr->mii_status & VELOCITY_DUPLEX_FULL)
1740 VELOCITY_PRT(MSG_LEVEL_INFO, " full duplex\n");
1742 VELOCITY_PRT(MSG_LEVEL_INFO, " half duplex\n");
1744 VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: Link forced", vptr->dev->name);
1745 switch (vptr->options.spd_dpx) {
1746 case SPD_DPX_100_HALF:
1747 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 100M bps half duplex\n");
1749 case SPD_DPX_100_FULL:
1750 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 100M bps full duplex\n");
1752 case SPD_DPX_10_HALF:
1753 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 10M bps half duplex\n");
1755 case SPD_DPX_10_FULL:
1756 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 10M bps full duplex\n");
1765 * velocity_error - handle error from controller
1767 * @status: card status
1769 * Process an error report from the hardware and attempt to recover
1770 * the card itself. At the moment we cannot recover from some
1771 * theoretically impossible errors but this could be fixed using
1772 * the pci_device_failed logic to bounce the hardware
1776 static void velocity_error(struct velocity_info *vptr, int status)
1779 if (status & ISR_TXSTLI) {
1780 struct mac_regs __iomem * regs = vptr->mac_regs;
1782 printk(KERN_ERR "TD structure error TDindex=%hx\n", readw(®s->TDIdx[0]));
1783 BYTE_REG_BITS_ON(TXESR_TDSTR, ®s->TXESR);
1784 writew(TRDCSR_RUN, ®s->TDCSRClr);
1785 netif_stop_queue(vptr->dev);
1787 /* FIXME: port over the pci_device_failed code and use it
1791 if (status & ISR_SRCI) {
1792 struct mac_regs __iomem * regs = vptr->mac_regs;
1795 if (vptr->options.spd_dpx == SPD_DPX_AUTO) {
1796 vptr->mii_status = check_connection_type(regs);
1799 * If it is a 3119, disable frame bursting in
1800 * halfduplex mode and enable it in fullduplex
1803 if (vptr->rev_id < REV_ID_VT3216_A0) {
1804 if (vptr->mii_status | VELOCITY_DUPLEX_FULL)
1805 BYTE_REG_BITS_ON(TCR_TB2BDIS, ®s->TCR);
1807 BYTE_REG_BITS_OFF(TCR_TB2BDIS, ®s->TCR);
1810 * Only enable CD heart beat counter in 10HD mode
1812 if (!(vptr->mii_status & VELOCITY_DUPLEX_FULL) && (vptr->mii_status & VELOCITY_SPEED_10)) {
1813 BYTE_REG_BITS_OFF(TESTCFG_HBDIS, ®s->TESTCFG);
1815 BYTE_REG_BITS_ON(TESTCFG_HBDIS, ®s->TESTCFG);
1819 * Get link status from PHYSR0
1821 linked = readb(®s->PHYSR0) & PHYSR0_LINKGD;
1824 vptr->mii_status &= ~VELOCITY_LINK_FAIL;
1825 netif_carrier_on(vptr->dev);
1827 vptr->mii_status |= VELOCITY_LINK_FAIL;
1828 netif_carrier_off(vptr->dev);
1831 velocity_print_link_status(vptr);
1832 enable_flow_control_ability(vptr);
1835 * Re-enable auto-polling because SRCI will disable
1839 enable_mii_autopoll(regs);
1841 if (vptr->mii_status & VELOCITY_LINK_FAIL)
1842 netif_stop_queue(vptr->dev);
1844 netif_wake_queue(vptr->dev);
1847 if (status & ISR_MIBFI)
1848 velocity_update_hw_mibs(vptr);
1849 if (status & ISR_LSTEI)
1850 mac_rx_queue_wake(vptr->mac_regs);
1854 * velocity_free_tx_buf - free transmit buffer
1858 * Release an transmit buffer. If the buffer was preallocated then
1859 * recycle it, if not then unmap the buffer.
1862 static void velocity_free_tx_buf(struct velocity_info *vptr, struct velocity_td_info *tdinfo)
1864 struct sk_buff *skb = tdinfo->skb;
1868 * Don't unmap the pre-allocated tx_bufs
1870 if (tdinfo->skb_dma && (tdinfo->skb_dma[0] != tdinfo->buf_dma)) {
1872 for (i = 0; i < tdinfo->nskb_dma; i++) {
1873 #ifdef VELOCITY_ZERO_COPY_SUPPORT
1874 pci_unmap_single(vptr->pdev, tdinfo->skb_dma[i], le16_to_cpu(td->tdesc1.len), PCI_DMA_TODEVICE);
1876 pci_unmap_single(vptr->pdev, tdinfo->skb_dma[i], skb->len, PCI_DMA_TODEVICE);
1878 tdinfo->skb_dma[i] = 0;
1881 dev_kfree_skb_irq(skb);
1886 * velocity_open - interface activation callback
1887 * @dev: network layer device to open
1889 * Called when the network layer brings the interface up. Returns
1890 * a negative posix error code on failure, or zero on success.
1892 * All the ring allocation and set up is done on open for this
1893 * adapter to minimise memory usage when inactive
1896 static int velocity_open(struct net_device *dev)
1898 struct velocity_info *vptr = netdev_priv(dev);
1901 ret = velocity_init_rings(vptr);
1905 ret = velocity_init_rd_ring(vptr);
1907 goto err_free_desc_rings;
1909 ret = velocity_init_td_ring(vptr);
1911 goto err_free_rd_ring;
1913 /* Ensure chip is running */
1914 pci_set_power_state(vptr->pdev, PCI_D0);
1916 velocity_init_registers(vptr, VELOCITY_INIT_COLD);
1918 ret = request_irq(vptr->pdev->irq, &velocity_intr, IRQF_SHARED,
1921 /* Power down the chip */
1922 pci_set_power_state(vptr->pdev, PCI_D3hot);
1923 goto err_free_td_ring;
1926 mac_enable_int(vptr->mac_regs);
1927 netif_start_queue(dev);
1928 vptr->flags |= VELOCITY_FLAGS_OPENED;
1933 velocity_free_td_ring(vptr);
1935 velocity_free_rd_ring(vptr);
1936 err_free_desc_rings:
1937 velocity_free_rings(vptr);
1942 * velocity_change_mtu - MTU change callback
1943 * @dev: network device
1944 * @new_mtu: desired MTU
1946 * Handle requests from the networking layer for MTU change on
1947 * this interface. It gets called on a change by the network layer.
1948 * Return zero for success or negative posix error code.
1951 static int velocity_change_mtu(struct net_device *dev, int new_mtu)
1953 struct velocity_info *vptr = netdev_priv(dev);
1954 unsigned long flags;
1955 int oldmtu = dev->mtu;
1958 if ((new_mtu < VELOCITY_MIN_MTU) || new_mtu > (VELOCITY_MAX_MTU)) {
1959 VELOCITY_PRT(MSG_LEVEL_ERR, KERN_NOTICE "%s: Invalid MTU.\n",
1964 if (!netif_running(dev)) {
1969 if (new_mtu != oldmtu) {
1970 spin_lock_irqsave(&vptr->lock, flags);
1972 netif_stop_queue(dev);
1973 velocity_shutdown(vptr);
1975 velocity_free_td_ring(vptr);
1976 velocity_free_rd_ring(vptr);
1980 ret = velocity_init_rd_ring(vptr);
1984 ret = velocity_init_td_ring(vptr);
1988 velocity_init_registers(vptr, VELOCITY_INIT_COLD);
1990 mac_enable_int(vptr->mac_regs);
1991 netif_start_queue(dev);
1993 spin_unlock_irqrestore(&vptr->lock, flags);
2000 * velocity_shutdown - shut down the chip
2001 * @vptr: velocity to deactivate
2003 * Shuts down the internal operations of the velocity and
2004 * disables interrupts, autopolling, transmit and receive
2007 static void velocity_shutdown(struct velocity_info *vptr)
2009 struct mac_regs __iomem * regs = vptr->mac_regs;
2010 mac_disable_int(regs);
2011 writel(CR0_STOP, ®s->CR0Set);
2012 writew(0xFFFF, ®s->TDCSRClr);
2013 writeb(0xFF, ®s->RDCSRClr);
2014 safe_disable_mii_autopoll(regs);
2015 mac_clear_isr(regs);
2019 * velocity_close - close adapter callback
2020 * @dev: network device
2022 * Callback from the network layer when the velocity is being
2023 * deactivated by the network layer
2026 static int velocity_close(struct net_device *dev)
2028 struct velocity_info *vptr = netdev_priv(dev);
2030 netif_stop_queue(dev);
2031 velocity_shutdown(vptr);
2033 if (vptr->flags & VELOCITY_FLAGS_WOL_ENABLED)
2034 velocity_get_ip(vptr);
2036 free_irq(dev->irq, dev);
2038 /* Power down the chip */
2039 pci_set_power_state(vptr->pdev, PCI_D3hot);
2041 /* Free the resources */
2042 velocity_free_td_ring(vptr);
2043 velocity_free_rd_ring(vptr);
2044 velocity_free_rings(vptr);
2046 vptr->flags &= (~VELOCITY_FLAGS_OPENED);
2051 * velocity_xmit - transmit packet callback
2052 * @skb: buffer to transmit
2053 * @dev: network device
2055 * Called by the networ layer to request a packet is queued to
2056 * the velocity. Returns zero on success.
2059 static int velocity_xmit(struct sk_buff *skb, struct net_device *dev)
2061 struct velocity_info *vptr = netdev_priv(dev);
2063 struct tx_desc *td_ptr;
2064 struct velocity_td_info *tdinfo;
2065 unsigned long flags;
2067 int pktlen = skb->len;
2068 __le16 len = cpu_to_le16(pktlen);
2070 #ifdef VELOCITY_ZERO_COPY_SUPPORT
2071 if (skb_shinfo(skb)->nr_frags > 6 && __skb_linearize(skb)) {
2077 spin_lock_irqsave(&vptr->lock, flags);
2079 index = vptr->td_curr[qnum];
2080 td_ptr = &(vptr->td_rings[qnum][index]);
2081 tdinfo = &(vptr->td_infos[qnum][index]);
2083 td_ptr->tdesc1.TCR = TCR0_TIC;
2084 td_ptr->td_buf[0].size &= ~TD_QUEUE;
2089 if (pktlen < ETH_ZLEN) {
2090 /* Cannot occur until ZC support */
2092 len = cpu_to_le16(ETH_ZLEN);
2093 skb_copy_from_linear_data(skb, tdinfo->buf, skb->len);
2094 memset(tdinfo->buf + skb->len, 0, ETH_ZLEN - skb->len);
2096 tdinfo->skb_dma[0] = tdinfo->buf_dma;
2097 td_ptr->tdesc0.len = len;
2098 td_ptr->td_buf[0].pa_low = cpu_to_le32(tdinfo->skb_dma[0]);
2099 td_ptr->td_buf[0].pa_high = 0;
2100 td_ptr->td_buf[0].size = len; /* queue is 0 anyway */
2101 tdinfo->nskb_dma = 1;
2103 #ifdef VELOCITY_ZERO_COPY_SUPPORT
2104 if (skb_shinfo(skb)->nr_frags > 0) {
2105 int nfrags = skb_shinfo(skb)->nr_frags;
2108 skb_copy_from_linear_data(skb, tdinfo->buf, skb->len);
2109 tdinfo->skb_dma[0] = tdinfo->buf_dma;
2110 td_ptr->tdesc0.len = len;
2111 td_ptr->td_buf[0].pa_low = cpu_to_le32(tdinfo->skb_dma[0]);
2112 td_ptr->td_buf[0].pa_high = 0;
2113 td_ptr->td_buf[0].size = len; /* queue is 0 anyway */
2114 tdinfo->nskb_dma = 1;
2117 tdinfo->nskb_dma = 0;
2118 tdinfo->skb_dma[i] = pci_map_single(vptr->pdev, skb->data,
2119 skb_headlen(skb), PCI_DMA_TODEVICE);
2121 td_ptr->tdesc0.len = len;
2123 /* FIXME: support 48bit DMA later */
2124 td_ptr->td_buf[i].pa_low = cpu_to_le32(tdinfo->skb_dma);
2125 td_ptr->td_buf[i].pa_high = 0;
2126 td_ptr->td_buf[i].size = cpu_to_le16(skb_headlen(skb));
2128 for (i = 0; i < nfrags; i++) {
2129 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
2130 void *addr = (void *)page_address(frag->page) + frag->page_offset;
2132 tdinfo->skb_dma[i + 1] = pci_map_single(vptr->pdev, addr, frag->size, PCI_DMA_TODEVICE);
2134 td_ptr->td_buf[i + 1].pa_low = cpu_to_le32(tdinfo->skb_dma[i + 1]);
2135 td_ptr->td_buf[i + 1].pa_high = 0;
2136 td_ptr->td_buf[i + 1].size = cpu_to_le16(frag->size);
2138 tdinfo->nskb_dma = i - 1;
2145 * Map the linear network buffer into PCI space and
2146 * add it to the transmit ring.
2149 tdinfo->skb_dma[0] = pci_map_single(vptr->pdev, skb->data, pktlen, PCI_DMA_TODEVICE);
2150 td_ptr->tdesc0.len = len;
2151 td_ptr->td_buf[0].pa_low = cpu_to_le32(tdinfo->skb_dma[0]);
2152 td_ptr->td_buf[0].pa_high = 0;
2153 td_ptr->td_buf[0].size = len;
2154 tdinfo->nskb_dma = 1;
2156 td_ptr->tdesc1.cmd = TCPLS_NORMAL + (tdinfo->nskb_dma + 1) * 16;
2158 if (vptr->vlgrp && vlan_tx_tag_present(skb)) {
2159 td_ptr->tdesc1.vlan = cpu_to_le16(vlan_tx_tag_get(skb));
2160 td_ptr->tdesc1.TCR |= TCR0_VETAG;
2164 * Handle hardware checksum
2166 if ((vptr->flags & VELOCITY_FLAGS_TX_CSUM)
2167 && (skb->ip_summed == CHECKSUM_PARTIAL)) {
2168 const struct iphdr *ip = ip_hdr(skb);
2169 if (ip->protocol == IPPROTO_TCP)
2170 td_ptr->tdesc1.TCR |= TCR0_TCPCK;
2171 else if (ip->protocol == IPPROTO_UDP)
2172 td_ptr->tdesc1.TCR |= (TCR0_UDPCK);
2173 td_ptr->tdesc1.TCR |= TCR0_IPCK;
2177 int prev = index - 1;
2180 prev = vptr->options.numtx - 1;
2181 td_ptr->tdesc0.len |= OWNED_BY_NIC;
2182 vptr->td_used[qnum]++;
2183 vptr->td_curr[qnum] = (index + 1) % vptr->options.numtx;
2185 if (AVAIL_TD(vptr, qnum) < 1)
2186 netif_stop_queue(dev);
2188 td_ptr = &(vptr->td_rings[qnum][prev]);
2189 td_ptr->td_buf[0].size |= TD_QUEUE;
2190 mac_tx_queue_wake(vptr->mac_regs, qnum);
2192 dev->trans_start = jiffies;
2193 spin_unlock_irqrestore(&vptr->lock, flags);
2198 * velocity_intr - interrupt callback
2199 * @irq: interrupt number
2200 * @dev_instance: interrupting device
2202 * Called whenever an interrupt is generated by the velocity
2203 * adapter IRQ line. We may not be the source of the interrupt
2204 * and need to identify initially if we are, and if not exit as
2205 * efficiently as possible.
2208 static int velocity_intr(int irq, void *dev_instance)
2210 struct net_device *dev = dev_instance;
2211 struct velocity_info *vptr = netdev_priv(dev);
2216 spin_lock(&vptr->lock);
2217 isr_status = mac_read_isr(vptr->mac_regs);
2220 if (isr_status == 0) {
2221 spin_unlock(&vptr->lock);
2225 mac_disable_int(vptr->mac_regs);
2228 * Keep processing the ISR until we have completed
2229 * processing and the isr_status becomes zero
2232 while (isr_status != 0) {
2233 mac_write_isr(vptr->mac_regs, isr_status);
2234 if (isr_status & (~(ISR_PRXI | ISR_PPRXI | ISR_PTXI | ISR_PPTXI)))
2235 velocity_error(vptr, isr_status);
2236 if (isr_status & (ISR_PRXI | ISR_PPRXI))
2237 max_count += velocity_rx_srv(vptr, isr_status);
2238 if (isr_status & (ISR_PTXI | ISR_PPTXI))
2239 max_count += velocity_tx_srv(vptr, isr_status);
2240 isr_status = mac_read_isr(vptr->mac_regs);
2241 if (max_count > vptr->options.int_works)
2243 printk(KERN_WARNING "%s: excessive work at interrupt.\n",
2248 spin_unlock(&vptr->lock);
2249 mac_enable_int(vptr->mac_regs);
2256 * velocity_set_multi - filter list change callback
2257 * @dev: network device
2259 * Called by the network layer when the filter lists need to change
2260 * for a velocity adapter. Reload the CAMs with the new address
2264 static void velocity_set_multi(struct net_device *dev)
2266 struct velocity_info *vptr = netdev_priv(dev);
2267 struct mac_regs __iomem * regs = vptr->mac_regs;
2270 struct dev_mc_list *mclist;
2272 if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */
2273 writel(0xffffffff, ®s->MARCAM[0]);
2274 writel(0xffffffff, ®s->MARCAM[4]);
2275 rx_mode = (RCR_AM | RCR_AB | RCR_PROM);
2276 } else if ((dev->mc_count > vptr->multicast_limit)
2277 || (dev->flags & IFF_ALLMULTI)) {
2278 writel(0xffffffff, ®s->MARCAM[0]);
2279 writel(0xffffffff, ®s->MARCAM[4]);
2280 rx_mode = (RCR_AM | RCR_AB);
2282 int offset = MCAM_SIZE - vptr->multicast_limit;
2283 mac_get_cam_mask(regs, vptr->mCAMmask);
2285 for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count; i++, mclist = mclist->next) {
2286 mac_set_cam(regs, i + offset, mclist->dmi_addr);
2287 vptr->mCAMmask[(offset + i) / 8] |= 1 << ((offset + i) & 7);
2290 mac_set_cam_mask(regs, vptr->mCAMmask);
2291 rx_mode = (RCR_AM | RCR_AB);
2293 if (dev->mtu > 1500)
2296 BYTE_REG_BITS_ON(rx_mode, ®s->RCR);
2301 * velocity_get_status - statistics callback
2302 * @dev: network device
2304 * Callback from the network layer to allow driver statistics
2305 * to be resynchronized with hardware collected state. In the
2306 * case of the velocity we need to pull the MIB counters from
2307 * the hardware into the counters before letting the network
2308 * layer display them.
2311 static struct net_device_stats *velocity_get_stats(struct net_device *dev)
2313 struct velocity_info *vptr = netdev_priv(dev);
2315 /* If the hardware is down, don't touch MII */
2316 if(!netif_running(dev))
2317 return &vptr->stats;
2319 spin_lock_irq(&vptr->lock);
2320 velocity_update_hw_mibs(vptr);
2321 spin_unlock_irq(&vptr->lock);
2323 vptr->stats.rx_packets = vptr->mib_counter[HW_MIB_ifRxAllPkts];
2324 vptr->stats.rx_errors = vptr->mib_counter[HW_MIB_ifRxErrorPkts];
2325 vptr->stats.rx_length_errors = vptr->mib_counter[HW_MIB_ifInRangeLengthErrors];
2327 // unsigned long rx_dropped; /* no space in linux buffers */
2328 vptr->stats.collisions = vptr->mib_counter[HW_MIB_ifTxEtherCollisions];
2329 /* detailed rx_errors: */
2330 // unsigned long rx_length_errors;
2331 // unsigned long rx_over_errors; /* receiver ring buff overflow */
2332 vptr->stats.rx_crc_errors = vptr->mib_counter[HW_MIB_ifRxPktCRCE];
2333 // unsigned long rx_frame_errors; /* recv'd frame alignment error */
2334 // unsigned long rx_fifo_errors; /* recv'r fifo overrun */
2335 // unsigned long rx_missed_errors; /* receiver missed packet */
2337 /* detailed tx_errors */
2338 // unsigned long tx_fifo_errors;
2340 return &vptr->stats;
2345 * velocity_ioctl - ioctl entry point
2346 * @dev: network device
2347 * @rq: interface request ioctl
2348 * @cmd: command code
2350 * Called when the user issues an ioctl request to the network
2351 * device in question. The velocity interface supports MII.
2354 static int velocity_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2356 struct velocity_info *vptr = netdev_priv(dev);
2359 /* If we are asked for information and the device is power
2360 saving then we need to bring the device back up to talk to it */
2362 if (!netif_running(dev))
2363 pci_set_power_state(vptr->pdev, PCI_D0);
2366 case SIOCGMIIPHY: /* Get address of MII PHY in use. */
2367 case SIOCGMIIREG: /* Read MII PHY register. */
2368 case SIOCSMIIREG: /* Write to MII PHY register. */
2369 ret = velocity_mii_ioctl(dev, rq, cmd);
2375 if (!netif_running(dev))
2376 pci_set_power_state(vptr->pdev, PCI_D3hot);
2383 * Definition for our device driver. The PCI layer interface
2384 * uses this to handle all our card discover and plugging
2387 static struct pci_driver velocity_driver = {
2388 .name = VELOCITY_NAME,
2389 .id_table = velocity_id_table,
2390 .probe = velocity_found1,
2391 .remove = __devexit_p(velocity_remove1),
2393 .suspend = velocity_suspend,
2394 .resume = velocity_resume,
2399 * velocity_init_module - load time function
2401 * Called when the velocity module is loaded. The PCI driver
2402 * is registered with the PCI layer, and in turn will call
2403 * the probe functions for each velocity adapter installed
2407 static int __init velocity_init_module(void)
2411 velocity_register_notifier();
2412 ret = pci_register_driver(&velocity_driver);
2414 velocity_unregister_notifier();
2419 * velocity_cleanup - module unload
2421 * When the velocity hardware is unloaded this function is called.
2422 * It will clean up the notifiers and the unregister the PCI
2423 * driver interface for this hardware. This in turn cleans up
2424 * all discovered interfaces before returning from the function
2427 static void __exit velocity_cleanup_module(void)
2429 velocity_unregister_notifier();
2430 pci_unregister_driver(&velocity_driver);
2433 module_init(velocity_init_module);
2434 module_exit(velocity_cleanup_module);
2438 * MII access , media link mode setting functions
2443 * mii_init - set up MII
2444 * @vptr: velocity adapter
2445 * @mii_status: links tatus
2447 * Set up the PHY for the current link state.
2450 static void mii_init(struct velocity_info *vptr, u32 mii_status)
2454 switch (PHYID_GET_PHY_ID(vptr->phy_id)) {
2455 case PHYID_CICADA_CS8201:
2457 * Reset to hardware default
2459 MII_REG_BITS_OFF((ANAR_ASMDIR | ANAR_PAUSE), MII_REG_ANAR, vptr->mac_regs);
2461 * Turn on ECHODIS bit in NWay-forced full mode and turn it
2462 * off it in NWay-forced half mode for NWay-forced v.s.
2463 * legacy-forced issue.
2465 if (vptr->mii_status & VELOCITY_DUPLEX_FULL)
2466 MII_REG_BITS_ON(TCSR_ECHODIS, MII_REG_TCSR, vptr->mac_regs);
2468 MII_REG_BITS_OFF(TCSR_ECHODIS, MII_REG_TCSR, vptr->mac_regs);
2470 * Turn on Link/Activity LED enable bit for CIS8201
2472 MII_REG_BITS_ON(PLED_LALBE, MII_REG_PLED, vptr->mac_regs);
2474 case PHYID_VT3216_32BIT:
2475 case PHYID_VT3216_64BIT:
2477 * Reset to hardware default
2479 MII_REG_BITS_ON((ANAR_ASMDIR | ANAR_PAUSE), MII_REG_ANAR, vptr->mac_regs);
2481 * Turn on ECHODIS bit in NWay-forced full mode and turn it
2482 * off it in NWay-forced half mode for NWay-forced v.s.
2483 * legacy-forced issue
2485 if (vptr->mii_status & VELOCITY_DUPLEX_FULL)
2486 MII_REG_BITS_ON(TCSR_ECHODIS, MII_REG_TCSR, vptr->mac_regs);
2488 MII_REG_BITS_OFF(TCSR_ECHODIS, MII_REG_TCSR, vptr->mac_regs);
2491 case PHYID_MARVELL_1000:
2492 case PHYID_MARVELL_1000S:
2494 * Assert CRS on Transmit
2496 MII_REG_BITS_ON(PSCR_ACRSTX, MII_REG_PSCR, vptr->mac_regs);
2498 * Reset to hardware default
2500 MII_REG_BITS_ON((ANAR_ASMDIR | ANAR_PAUSE), MII_REG_ANAR, vptr->mac_regs);
2505 velocity_mii_read(vptr->mac_regs, MII_REG_BMCR, &BMCR);
2506 if (BMCR & BMCR_ISO) {
2508 velocity_mii_write(vptr->mac_regs, MII_REG_BMCR, BMCR);
2513 * safe_disable_mii_autopoll - autopoll off
2514 * @regs: velocity registers
2516 * Turn off the autopoll and wait for it to disable on the chip
2519 static void safe_disable_mii_autopoll(struct mac_regs __iomem * regs)
2523 /* turn off MAUTO */
2524 writeb(0, ®s->MIICR);
2525 for (ww = 0; ww < W_MAX_TIMEOUT; ww++) {
2527 if (BYTE_REG_BITS_IS_ON(MIISR_MIDLE, ®s->MIISR))
2533 * enable_mii_autopoll - turn on autopolling
2534 * @regs: velocity registers
2536 * Enable the MII link status autopoll feature on the Velocity
2537 * hardware. Wait for it to enable.
2540 static void enable_mii_autopoll(struct mac_regs __iomem * regs)
2544 writeb(0, &(regs->MIICR));
2545 writeb(MIIADR_SWMPL, ®s->MIIADR);
2547 for (ii = 0; ii < W_MAX_TIMEOUT; ii++) {
2549 if (BYTE_REG_BITS_IS_ON(MIISR_MIDLE, ®s->MIISR))
2553 writeb(MIICR_MAUTO, ®s->MIICR);
2555 for (ii = 0; ii < W_MAX_TIMEOUT; ii++) {
2557 if (!BYTE_REG_BITS_IS_ON(MIISR_MIDLE, ®s->MIISR))
2564 * velocity_mii_read - read MII data
2565 * @regs: velocity registers
2566 * @index: MII register index
2567 * @data: buffer for received data
2569 * Perform a single read of an MII 16bit register. Returns zero
2570 * on success or -ETIMEDOUT if the PHY did not respond.
2573 static int velocity_mii_read(struct mac_regs __iomem *regs, u8 index, u16 *data)
2578 * Disable MIICR_MAUTO, so that mii addr can be set normally
2580 safe_disable_mii_autopoll(regs);
2582 writeb(index, ®s->MIIADR);
2584 BYTE_REG_BITS_ON(MIICR_RCMD, ®s->MIICR);
2586 for (ww = 0; ww < W_MAX_TIMEOUT; ww++) {
2587 if (!(readb(®s->MIICR) & MIICR_RCMD))
2591 *data = readw(®s->MIIDATA);
2593 enable_mii_autopoll(regs);
2594 if (ww == W_MAX_TIMEOUT)
2600 * velocity_mii_write - write MII data
2601 * @regs: velocity registers
2602 * @index: MII register index
2603 * @data: 16bit data for the MII register
2605 * Perform a single write to an MII 16bit register. Returns zero
2606 * on success or -ETIMEDOUT if the PHY did not respond.
2609 static int velocity_mii_write(struct mac_regs __iomem *regs, u8 mii_addr, u16 data)
2614 * Disable MIICR_MAUTO, so that mii addr can be set normally
2616 safe_disable_mii_autopoll(regs);
2618 /* MII reg offset */
2619 writeb(mii_addr, ®s->MIIADR);
2621 writew(data, ®s->MIIDATA);
2623 /* turn on MIICR_WCMD */
2624 BYTE_REG_BITS_ON(MIICR_WCMD, ®s->MIICR);
2626 /* W_MAX_TIMEOUT is the timeout period */
2627 for (ww = 0; ww < W_MAX_TIMEOUT; ww++) {
2629 if (!(readb(®s->MIICR) & MIICR_WCMD))
2632 enable_mii_autopoll(regs);
2634 if (ww == W_MAX_TIMEOUT)
2640 * velocity_get_opt_media_mode - get media selection
2641 * @vptr: velocity adapter
2643 * Get the media mode stored in EEPROM or module options and load
2644 * mii_status accordingly. The requested link state information
2648 static u32 velocity_get_opt_media_mode(struct velocity_info *vptr)
2652 switch (vptr->options.spd_dpx) {
2654 status = VELOCITY_AUTONEG_ENABLE;
2656 case SPD_DPX_100_FULL:
2657 status = VELOCITY_SPEED_100 | VELOCITY_DUPLEX_FULL;
2659 case SPD_DPX_10_FULL:
2660 status = VELOCITY_SPEED_10 | VELOCITY_DUPLEX_FULL;
2662 case SPD_DPX_100_HALF:
2663 status = VELOCITY_SPEED_100;
2665 case SPD_DPX_10_HALF:
2666 status = VELOCITY_SPEED_10;
2669 vptr->mii_status = status;
2674 * mii_set_auto_on - autonegotiate on
2677 * Enable autonegotation on this interface
2680 static void mii_set_auto_on(struct velocity_info *vptr)
2682 if (MII_REG_BITS_IS_ON(BMCR_AUTO, MII_REG_BMCR, vptr->mac_regs))
2683 MII_REG_BITS_ON(BMCR_REAUTO, MII_REG_BMCR, vptr->mac_regs);
2685 MII_REG_BITS_ON(BMCR_AUTO, MII_REG_BMCR, vptr->mac_regs);
2690 static void mii_set_auto_off(struct velocity_info * vptr)
2692 MII_REG_BITS_OFF(BMCR_AUTO, MII_REG_BMCR, vptr->mac_regs);
2697 * set_mii_flow_control - flow control setup
2698 * @vptr: velocity interface
2700 * Set up the flow control on this interface according to
2701 * the supplied user/eeprom options.
2704 static void set_mii_flow_control(struct velocity_info *vptr)
2706 /*Enable or Disable PAUSE in ANAR */
2707 switch (vptr->options.flow_cntl) {
2709 MII_REG_BITS_OFF(ANAR_PAUSE, MII_REG_ANAR, vptr->mac_regs);
2710 MII_REG_BITS_ON(ANAR_ASMDIR, MII_REG_ANAR, vptr->mac_regs);
2714 MII_REG_BITS_ON(ANAR_PAUSE, MII_REG_ANAR, vptr->mac_regs);
2715 MII_REG_BITS_ON(ANAR_ASMDIR, MII_REG_ANAR, vptr->mac_regs);
2718 case FLOW_CNTL_TX_RX:
2719 MII_REG_BITS_ON(ANAR_PAUSE, MII_REG_ANAR, vptr->mac_regs);
2720 MII_REG_BITS_ON(ANAR_ASMDIR, MII_REG_ANAR, vptr->mac_regs);
2723 case FLOW_CNTL_DISABLE:
2724 MII_REG_BITS_OFF(ANAR_PAUSE, MII_REG_ANAR, vptr->mac_regs);
2725 MII_REG_BITS_OFF(ANAR_ASMDIR, MII_REG_ANAR, vptr->mac_regs);
2733 * velocity_set_media_mode - set media mode
2734 * @mii_status: old MII link state
2736 * Check the media link state and configure the flow control
2737 * PHY and also velocity hardware setup accordingly. In particular
2738 * we need to set up CD polling and frame bursting.
2741 static int velocity_set_media_mode(struct velocity_info *vptr, u32 mii_status)
2744 struct mac_regs __iomem * regs = vptr->mac_regs;
2746 vptr->mii_status = mii_check_media_mode(vptr->mac_regs);
2747 curr_status = vptr->mii_status & (~VELOCITY_LINK_FAIL);
2749 /* Set mii link status */
2750 set_mii_flow_control(vptr);
2753 Check if new status is consisent with current status
2754 if (((mii_status & curr_status) & VELOCITY_AUTONEG_ENABLE)
2755 || (mii_status==curr_status)) {
2756 vptr->mii_status=mii_check_media_mode(vptr->mac_regs);
2757 vptr->mii_status=check_connection_type(vptr->mac_regs);
2758 VELOCITY_PRT(MSG_LEVEL_INFO, "Velocity link no change\n");
2763 if (PHYID_GET_PHY_ID(vptr->phy_id) == PHYID_CICADA_CS8201) {
2764 MII_REG_BITS_ON(AUXCR_MDPPS, MII_REG_AUXCR, vptr->mac_regs);
2768 * If connection type is AUTO
2770 if (mii_status & VELOCITY_AUTONEG_ENABLE) {
2771 VELOCITY_PRT(MSG_LEVEL_INFO, "Velocity is AUTO mode\n");
2772 /* clear force MAC mode bit */
2773 BYTE_REG_BITS_OFF(CHIPGCR_FCMODE, ®s->CHIPGCR);
2774 /* set duplex mode of MAC according to duplex mode of MII */
2775 MII_REG_BITS_ON(ANAR_TXFD | ANAR_TX | ANAR_10FD | ANAR_10, MII_REG_ANAR, vptr->mac_regs);
2776 MII_REG_BITS_ON(G1000CR_1000FD | G1000CR_1000, MII_REG_G1000CR, vptr->mac_regs);
2777 MII_REG_BITS_ON(BMCR_SPEED1G, MII_REG_BMCR, vptr->mac_regs);
2779 /* enable AUTO-NEGO mode */
2780 mii_set_auto_on(vptr);
2786 * 1. if it's 3119, disable frame bursting in halfduplex mode
2787 * and enable it in fullduplex mode
2788 * 2. set correct MII/GMII and half/full duplex mode in CHIPGCR
2789 * 3. only enable CD heart beat counter in 10HD mode
2792 /* set force MAC mode bit */
2793 BYTE_REG_BITS_ON(CHIPGCR_FCMODE, ®s->CHIPGCR);
2795 CHIPGCR = readb(®s->CHIPGCR);
2796 CHIPGCR &= ~CHIPGCR_FCGMII;
2798 if (mii_status & VELOCITY_DUPLEX_FULL) {
2799 CHIPGCR |= CHIPGCR_FCFDX;
2800 writeb(CHIPGCR, ®s->CHIPGCR);
2801 VELOCITY_PRT(MSG_LEVEL_INFO, "set Velocity to forced full mode\n");
2802 if (vptr->rev_id < REV_ID_VT3216_A0)
2803 BYTE_REG_BITS_OFF(TCR_TB2BDIS, ®s->TCR);
2805 CHIPGCR &= ~CHIPGCR_FCFDX;
2806 VELOCITY_PRT(MSG_LEVEL_INFO, "set Velocity to forced half mode\n");
2807 writeb(CHIPGCR, ®s->CHIPGCR);
2808 if (vptr->rev_id < REV_ID_VT3216_A0)
2809 BYTE_REG_BITS_ON(TCR_TB2BDIS, ®s->TCR);
2812 MII_REG_BITS_OFF(G1000CR_1000FD | G1000CR_1000, MII_REG_G1000CR, vptr->mac_regs);
2814 if (!(mii_status & VELOCITY_DUPLEX_FULL) && (mii_status & VELOCITY_SPEED_10)) {
2815 BYTE_REG_BITS_OFF(TESTCFG_HBDIS, ®s->TESTCFG);
2817 BYTE_REG_BITS_ON(TESTCFG_HBDIS, ®s->TESTCFG);
2819 /* MII_REG_BITS_OFF(BMCR_SPEED1G, MII_REG_BMCR, vptr->mac_regs); */
2820 velocity_mii_read(vptr->mac_regs, MII_REG_ANAR, &ANAR);
2821 ANAR &= (~(ANAR_TXFD | ANAR_TX | ANAR_10FD | ANAR_10));
2822 if (mii_status & VELOCITY_SPEED_100) {
2823 if (mii_status & VELOCITY_DUPLEX_FULL)
2828 if (mii_status & VELOCITY_DUPLEX_FULL)
2833 velocity_mii_write(vptr->mac_regs, MII_REG_ANAR, ANAR);
2834 /* enable AUTO-NEGO mode */
2835 mii_set_auto_on(vptr);
2836 /* MII_REG_BITS_ON(BMCR_AUTO, MII_REG_BMCR, vptr->mac_regs); */
2838 /* vptr->mii_status=mii_check_media_mode(vptr->mac_regs); */
2839 /* vptr->mii_status=check_connection_type(vptr->mac_regs); */
2840 return VELOCITY_LINK_CHANGE;
2844 * mii_check_media_mode - check media state
2845 * @regs: velocity registers
2847 * Check the current MII status and determine the link status
2851 static u32 mii_check_media_mode(struct mac_regs __iomem * regs)
2856 if (!MII_REG_BITS_IS_ON(BMSR_LNK, MII_REG_BMSR, regs))
2857 status |= VELOCITY_LINK_FAIL;
2859 if (MII_REG_BITS_IS_ON(G1000CR_1000FD, MII_REG_G1000CR, regs))
2860 status |= VELOCITY_SPEED_1000 | VELOCITY_DUPLEX_FULL;
2861 else if (MII_REG_BITS_IS_ON(G1000CR_1000, MII_REG_G1000CR, regs))
2862 status |= (VELOCITY_SPEED_1000);
2864 velocity_mii_read(regs, MII_REG_ANAR, &ANAR);
2865 if (ANAR & ANAR_TXFD)
2866 status |= (VELOCITY_SPEED_100 | VELOCITY_DUPLEX_FULL);
2867 else if (ANAR & ANAR_TX)
2868 status |= VELOCITY_SPEED_100;
2869 else if (ANAR & ANAR_10FD)
2870 status |= (VELOCITY_SPEED_10 | VELOCITY_DUPLEX_FULL);
2872 status |= (VELOCITY_SPEED_10);
2875 if (MII_REG_BITS_IS_ON(BMCR_AUTO, MII_REG_BMCR, regs)) {
2876 velocity_mii_read(regs, MII_REG_ANAR, &ANAR);
2877 if ((ANAR & (ANAR_TXFD | ANAR_TX | ANAR_10FD | ANAR_10))
2878 == (ANAR_TXFD | ANAR_TX | ANAR_10FD | ANAR_10)) {
2879 if (MII_REG_BITS_IS_ON(G1000CR_1000 | G1000CR_1000FD, MII_REG_G1000CR, regs))
2880 status |= VELOCITY_AUTONEG_ENABLE;
2887 static u32 check_connection_type(struct mac_regs __iomem * regs)
2892 PHYSR0 = readb(®s->PHYSR0);
2895 if (!(PHYSR0 & PHYSR0_LINKGD))
2896 status|=VELOCITY_LINK_FAIL;
2899 if (PHYSR0 & PHYSR0_FDPX)
2900 status |= VELOCITY_DUPLEX_FULL;
2902 if (PHYSR0 & PHYSR0_SPDG)
2903 status |= VELOCITY_SPEED_1000;
2904 else if (PHYSR0 & PHYSR0_SPD10)
2905 status |= VELOCITY_SPEED_10;
2907 status |= VELOCITY_SPEED_100;
2909 if (MII_REG_BITS_IS_ON(BMCR_AUTO, MII_REG_BMCR, regs)) {
2910 velocity_mii_read(regs, MII_REG_ANAR, &ANAR);
2911 if ((ANAR & (ANAR_TXFD | ANAR_TX | ANAR_10FD | ANAR_10))
2912 == (ANAR_TXFD | ANAR_TX | ANAR_10FD | ANAR_10)) {
2913 if (MII_REG_BITS_IS_ON(G1000CR_1000 | G1000CR_1000FD, MII_REG_G1000CR, regs))
2914 status |= VELOCITY_AUTONEG_ENABLE;
2922 * enable_flow_control_ability - flow control
2923 * @vptr: veloity to configure
2925 * Set up flow control according to the flow control options
2926 * determined by the eeprom/configuration.
2929 static void enable_flow_control_ability(struct velocity_info *vptr)
2932 struct mac_regs __iomem * regs = vptr->mac_regs;
2934 switch (vptr->options.flow_cntl) {
2936 case FLOW_CNTL_DEFAULT:
2937 if (BYTE_REG_BITS_IS_ON(PHYSR0_RXFLC, ®s->PHYSR0))
2938 writel(CR0_FDXRFCEN, ®s->CR0Set);
2940 writel(CR0_FDXRFCEN, ®s->CR0Clr);
2942 if (BYTE_REG_BITS_IS_ON(PHYSR0_TXFLC, ®s->PHYSR0))
2943 writel(CR0_FDXTFCEN, ®s->CR0Set);
2945 writel(CR0_FDXTFCEN, ®s->CR0Clr);
2949 writel(CR0_FDXTFCEN, ®s->CR0Set);
2950 writel(CR0_FDXRFCEN, ®s->CR0Clr);
2954 writel(CR0_FDXRFCEN, ®s->CR0Set);
2955 writel(CR0_FDXTFCEN, ®s->CR0Clr);
2958 case FLOW_CNTL_TX_RX:
2959 writel(CR0_FDXTFCEN, ®s->CR0Set);
2960 writel(CR0_FDXRFCEN, ®s->CR0Set);
2963 case FLOW_CNTL_DISABLE:
2964 writel(CR0_FDXRFCEN, ®s->CR0Clr);
2965 writel(CR0_FDXTFCEN, ®s->CR0Clr);
2976 * velocity_ethtool_up - pre hook for ethtool
2977 * @dev: network device
2979 * Called before an ethtool operation. We need to make sure the
2980 * chip is out of D3 state before we poke at it.
2983 static int velocity_ethtool_up(struct net_device *dev)
2985 struct velocity_info *vptr = netdev_priv(dev);
2986 if (!netif_running(dev))
2987 pci_set_power_state(vptr->pdev, PCI_D0);
2992 * velocity_ethtool_down - post hook for ethtool
2993 * @dev: network device
2995 * Called after an ethtool operation. Restore the chip back to D3
2996 * state if it isn't running.
2999 static void velocity_ethtool_down(struct net_device *dev)
3001 struct velocity_info *vptr = netdev_priv(dev);
3002 if (!netif_running(dev))
3003 pci_set_power_state(vptr->pdev, PCI_D3hot);
3006 static int velocity_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
3008 struct velocity_info *vptr = netdev_priv(dev);
3009 struct mac_regs __iomem * regs = vptr->mac_regs;
3011 status = check_connection_type(vptr->mac_regs);
3013 cmd->supported = SUPPORTED_TP |
3015 SUPPORTED_10baseT_Half |
3016 SUPPORTED_10baseT_Full |
3017 SUPPORTED_100baseT_Half |
3018 SUPPORTED_100baseT_Full |
3019 SUPPORTED_1000baseT_Half |
3020 SUPPORTED_1000baseT_Full;
3021 if (status & VELOCITY_SPEED_1000)
3022 cmd->speed = SPEED_1000;
3023 else if (status & VELOCITY_SPEED_100)
3024 cmd->speed = SPEED_100;
3026 cmd->speed = SPEED_10;
3027 cmd->autoneg = (status & VELOCITY_AUTONEG_ENABLE) ? AUTONEG_ENABLE : AUTONEG_DISABLE;
3028 cmd->port = PORT_TP;
3029 cmd->transceiver = XCVR_INTERNAL;
3030 cmd->phy_address = readb(®s->MIIADR) & 0x1F;
3032 if (status & VELOCITY_DUPLEX_FULL)
3033 cmd->duplex = DUPLEX_FULL;
3035 cmd->duplex = DUPLEX_HALF;
3040 static int velocity_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
3042 struct velocity_info *vptr = netdev_priv(dev);
3047 curr_status = check_connection_type(vptr->mac_regs);
3048 curr_status &= (~VELOCITY_LINK_FAIL);
3050 new_status |= ((cmd->autoneg) ? VELOCITY_AUTONEG_ENABLE : 0);
3051 new_status |= ((cmd->speed == SPEED_100) ? VELOCITY_SPEED_100 : 0);
3052 new_status |= ((cmd->speed == SPEED_10) ? VELOCITY_SPEED_10 : 0);
3053 new_status |= ((cmd->duplex == DUPLEX_FULL) ? VELOCITY_DUPLEX_FULL : 0);
3055 if ((new_status & VELOCITY_AUTONEG_ENABLE) && (new_status != (curr_status | VELOCITY_AUTONEG_ENABLE)))
3058 velocity_set_media_mode(vptr, new_status);
3063 static u32 velocity_get_link(struct net_device *dev)
3065 struct velocity_info *vptr = netdev_priv(dev);
3066 struct mac_regs __iomem * regs = vptr->mac_regs;
3067 return BYTE_REG_BITS_IS_ON(PHYSR0_LINKGD, ®s->PHYSR0) ? 1 : 0;
3070 static void velocity_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
3072 struct velocity_info *vptr = netdev_priv(dev);
3073 strcpy(info->driver, VELOCITY_NAME);
3074 strcpy(info->version, VELOCITY_VERSION);
3075 strcpy(info->bus_info, pci_name(vptr->pdev));
3078 static void velocity_ethtool_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
3080 struct velocity_info *vptr = netdev_priv(dev);
3081 wol->supported = WAKE_PHY | WAKE_MAGIC | WAKE_UCAST | WAKE_ARP;
3082 wol->wolopts |= WAKE_MAGIC;
3084 if (vptr->wol_opts & VELOCITY_WOL_PHY)
3085 wol.wolopts|=WAKE_PHY;
3087 if (vptr->wol_opts & VELOCITY_WOL_UCAST)
3088 wol->wolopts |= WAKE_UCAST;
3089 if (vptr->wol_opts & VELOCITY_WOL_ARP)
3090 wol->wolopts |= WAKE_ARP;
3091 memcpy(&wol->sopass, vptr->wol_passwd, 6);
3094 static int velocity_ethtool_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
3096 struct velocity_info *vptr = netdev_priv(dev);
3098 if (!(wol->wolopts & (WAKE_PHY | WAKE_MAGIC | WAKE_UCAST | WAKE_ARP)))
3100 vptr->wol_opts = VELOCITY_WOL_MAGIC;
3103 if (wol.wolopts & WAKE_PHY) {
3104 vptr->wol_opts|=VELOCITY_WOL_PHY;
3105 vptr->flags |=VELOCITY_FLAGS_WOL_ENABLED;
3109 if (wol->wolopts & WAKE_MAGIC) {
3110 vptr->wol_opts |= VELOCITY_WOL_MAGIC;
3111 vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
3113 if (wol->wolopts & WAKE_UCAST) {
3114 vptr->wol_opts |= VELOCITY_WOL_UCAST;
3115 vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
3117 if (wol->wolopts & WAKE_ARP) {
3118 vptr->wol_opts |= VELOCITY_WOL_ARP;
3119 vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
3121 memcpy(vptr->wol_passwd, wol->sopass, 6);
3125 static u32 velocity_get_msglevel(struct net_device *dev)
3130 static void velocity_set_msglevel(struct net_device *dev, u32 value)
3135 static const struct ethtool_ops velocity_ethtool_ops = {
3136 .get_settings = velocity_get_settings,
3137 .set_settings = velocity_set_settings,
3138 .get_drvinfo = velocity_get_drvinfo,
3139 .get_wol = velocity_ethtool_get_wol,
3140 .set_wol = velocity_ethtool_set_wol,
3141 .get_msglevel = velocity_get_msglevel,
3142 .set_msglevel = velocity_set_msglevel,
3143 .get_link = velocity_get_link,
3144 .begin = velocity_ethtool_up,
3145 .complete = velocity_ethtool_down
3149 * velocity_mii_ioctl - MII ioctl handler
3150 * @dev: network device
3151 * @ifr: the ifreq block for the ioctl
3154 * Process MII requests made via ioctl from the network layer. These
3155 * are used by tools like kudzu to interrogate the link state of the
3159 static int velocity_mii_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
3161 struct velocity_info *vptr = netdev_priv(dev);
3162 struct mac_regs __iomem * regs = vptr->mac_regs;
3163 unsigned long flags;
3164 struct mii_ioctl_data *miidata = if_mii(ifr);
3169 miidata->phy_id = readb(®s->MIIADR) & 0x1f;
3172 if (!capable(CAP_NET_ADMIN))
3174 if(velocity_mii_read(vptr->mac_regs, miidata->reg_num & 0x1f, &(miidata->val_out)) < 0)
3178 if (!capable(CAP_NET_ADMIN))
3180 spin_lock_irqsave(&vptr->lock, flags);
3181 err = velocity_mii_write(vptr->mac_regs, miidata->reg_num & 0x1f, miidata->val_in);
3182 spin_unlock_irqrestore(&vptr->lock, flags);
3183 check_connection_type(vptr->mac_regs);
3196 * velocity_save_context - save registers
3198 * @context: buffer for stored context
3200 * Retrieve the current configuration from the velocity hardware
3201 * and stash it in the context structure, for use by the context
3202 * restore functions. This allows us to save things we need across
3206 static void velocity_save_context(struct velocity_info *vptr, struct velocity_context * context)
3208 struct mac_regs __iomem * regs = vptr->mac_regs;
3210 u8 __iomem *ptr = (u8 __iomem *)regs;
3212 for (i = MAC_REG_PAR; i < MAC_REG_CR0_CLR; i += 4)
3213 *((u32 *) (context->mac_reg + i)) = readl(ptr + i);
3215 for (i = MAC_REG_MAR; i < MAC_REG_TDCSR_CLR; i += 4)
3216 *((u32 *) (context->mac_reg + i)) = readl(ptr + i);
3218 for (i = MAC_REG_RDBASE_LO; i < MAC_REG_FIFO_TEST0; i += 4)
3219 *((u32 *) (context->mac_reg + i)) = readl(ptr + i);
3224 * velocity_restore_context - restore registers
3226 * @context: buffer for stored context
3228 * Reload the register configuration from the velocity context
3229 * created by velocity_save_context.
3232 static void velocity_restore_context(struct velocity_info *vptr, struct velocity_context *context)
3234 struct mac_regs __iomem * regs = vptr->mac_regs;
3236 u8 __iomem *ptr = (u8 __iomem *)regs;
3238 for (i = MAC_REG_PAR; i < MAC_REG_CR0_SET; i += 4) {
3239 writel(*((u32 *) (context->mac_reg + i)), ptr + i);
3243 for (i = MAC_REG_CR1_SET; i < MAC_REG_CR0_CLR; i++) {
3245 writeb(~(*((u8 *) (context->mac_reg + i))), ptr + i + 4);
3247 writeb(*((u8 *) (context->mac_reg + i)), ptr + i);
3250 for (i = MAC_REG_MAR; i < MAC_REG_IMR; i += 4) {
3251 writel(*((u32 *) (context->mac_reg + i)), ptr + i);
3254 for (i = MAC_REG_RDBASE_LO; i < MAC_REG_FIFO_TEST0; i += 4) {
3255 writel(*((u32 *) (context->mac_reg + i)), ptr + i);
3258 for (i = MAC_REG_TDCSR_SET; i <= MAC_REG_RDCSR_SET; i++) {
3259 writeb(*((u8 *) (context->mac_reg + i)), ptr + i);
3265 * wol_calc_crc - WOL CRC
3266 * @pattern: data pattern
3267 * @mask_pattern: mask
3269 * Compute the wake on lan crc hashes for the packet header
3270 * we are interested in.
3273 static u16 wol_calc_crc(int size, u8 * pattern, u8 *mask_pattern)
3279 for (i = 0; i < size; i++) {
3280 mask = mask_pattern[i];
3282 /* Skip this loop if the mask equals to zero */
3286 for (j = 0; j < 8; j++) {
3287 if ((mask & 0x01) == 0) {
3292 crc = crc_ccitt(crc, &(pattern[i * 8 + j]), 1);
3295 /* Finally, invert the result once to get the correct data */
3297 return bitrev32(crc) >> 16;
3301 * velocity_set_wol - set up for wake on lan
3302 * @vptr: velocity to set WOL status on
3304 * Set a card up for wake on lan either by unicast or by
3307 * FIXME: check static buffer is safe here
3310 static int velocity_set_wol(struct velocity_info *vptr)
3312 struct mac_regs __iomem * regs = vptr->mac_regs;
3316 static u32 mask_pattern[2][4] = {
3317 {0x00203000, 0x000003C0, 0x00000000, 0x0000000}, /* ARP */
3318 {0xfffff000, 0xffffffff, 0xffffffff, 0x000ffff} /* Magic Packet */
3321 writew(0xFFFF, ®s->WOLCRClr);
3322 writeb(WOLCFG_SAB | WOLCFG_SAM, ®s->WOLCFGSet);
3323 writew(WOLCR_MAGIC_EN, ®s->WOLCRSet);
3326 if (vptr->wol_opts & VELOCITY_WOL_PHY)
3327 writew((WOLCR_LINKON_EN|WOLCR_LINKOFF_EN), ®s->WOLCRSet);
3330 if (vptr->wol_opts & VELOCITY_WOL_UCAST) {
3331 writew(WOLCR_UNICAST_EN, ®s->WOLCRSet);
3334 if (vptr->wol_opts & VELOCITY_WOL_ARP) {
3335 struct arp_packet *arp = (struct arp_packet *) buf;
3337 memset(buf, 0, sizeof(struct arp_packet) + 7);
3339 for (i = 0; i < 4; i++)
3340 writel(mask_pattern[0][i], ®s->ByteMask[0][i]);
3342 arp->type = htons(ETH_P_ARP);
3343 arp->ar_op = htons(1);
3345 memcpy(arp->ar_tip, vptr->ip_addr, 4);
3347 crc = wol_calc_crc((sizeof(struct arp_packet) + 7) / 8, buf,
3348 (u8 *) & mask_pattern[0][0]);
3350 writew(crc, ®s->PatternCRC[0]);
3351 writew(WOLCR_ARP_EN, ®s->WOLCRSet);
3354 BYTE_REG_BITS_ON(PWCFG_WOLTYPE, ®s->PWCFGSet);
3355 BYTE_REG_BITS_ON(PWCFG_LEGACY_WOLEN, ®s->PWCFGSet);
3357 writew(0x0FFF, ®s->WOLSRClr);
3359 if (vptr->mii_status & VELOCITY_AUTONEG_ENABLE) {
3360 if (PHYID_GET_PHY_ID(vptr->phy_id) == PHYID_CICADA_CS8201)
3361 MII_REG_BITS_ON(AUXCR_MDPPS, MII_REG_AUXCR, vptr->mac_regs);
3363 MII_REG_BITS_OFF(G1000CR_1000FD | G1000CR_1000, MII_REG_G1000CR, vptr->mac_regs);
3366 if (vptr->mii_status & VELOCITY_SPEED_1000)
3367 MII_REG_BITS_ON(BMCR_REAUTO, MII_REG_BMCR, vptr->mac_regs);
3369 BYTE_REG_BITS_ON(CHIPGCR_FCMODE, ®s->CHIPGCR);
3373 GCR = readb(®s->CHIPGCR);
3374 GCR = (GCR & ~CHIPGCR_FCGMII) | CHIPGCR_FCFDX;
3375 writeb(GCR, ®s->CHIPGCR);
3378 BYTE_REG_BITS_OFF(ISR_PWEI, ®s->ISR);
3379 /* Turn on SWPTAG just before entering power mode */
3380 BYTE_REG_BITS_ON(STICKHW_SWPTAG, ®s->STICKHW);
3381 /* Go to bed ..... */
3382 BYTE_REG_BITS_ON((STICKHW_DS1 | STICKHW_DS0), ®s->STICKHW);
3387 static int velocity_suspend(struct pci_dev *pdev, pm_message_t state)
3389 struct net_device *dev = pci_get_drvdata(pdev);
3390 struct velocity_info *vptr = netdev_priv(dev);
3391 unsigned long flags;
3393 if(!netif_running(vptr->dev))
3396 netif_device_detach(vptr->dev);
3398 spin_lock_irqsave(&vptr->lock, flags);
3399 pci_save_state(pdev);
3401 if (vptr->flags & VELOCITY_FLAGS_WOL_ENABLED) {
3402 velocity_get_ip(vptr);
3403 velocity_save_context(vptr, &vptr->context);
3404 velocity_shutdown(vptr);
3405 velocity_set_wol(vptr);
3406 pci_enable_wake(pdev, PCI_D3hot, 1);
3407 pci_set_power_state(pdev, PCI_D3hot);
3409 velocity_save_context(vptr, &vptr->context);
3410 velocity_shutdown(vptr);
3411 pci_disable_device(pdev);
3412 pci_set_power_state(pdev, pci_choose_state(pdev, state));
3415 pci_set_power_state(pdev, pci_choose_state(pdev, state));
3417 spin_unlock_irqrestore(&vptr->lock, flags);
3421 static int velocity_resume(struct pci_dev *pdev)
3423 struct net_device *dev = pci_get_drvdata(pdev);
3424 struct velocity_info *vptr = netdev_priv(dev);
3425 unsigned long flags;
3428 if(!netif_running(vptr->dev))
3431 pci_set_power_state(pdev, PCI_D0);
3432 pci_enable_wake(pdev, 0, 0);
3433 pci_restore_state(pdev);
3435 mac_wol_reset(vptr->mac_regs);
3437 spin_lock_irqsave(&vptr->lock, flags);
3438 velocity_restore_context(vptr, &vptr->context);
3439 velocity_init_registers(vptr, VELOCITY_INIT_WOL);
3440 mac_disable_int(vptr->mac_regs);
3442 velocity_tx_srv(vptr, 0);
3444 for (i = 0; i < vptr->num_txq; i++) {
3445 if (vptr->td_used[i]) {
3446 mac_tx_queue_wake(vptr->mac_regs, i);
3450 mac_enable_int(vptr->mac_regs);
3451 spin_unlock_irqrestore(&vptr->lock, flags);
3452 netif_device_attach(vptr->dev);
3459 static int velocity_netdev_event(struct notifier_block *nb, unsigned long notification, void *ptr)
3461 struct in_ifaddr *ifa = (struct in_ifaddr *) ptr;
3462 struct net_device *dev = ifa->ifa_dev->dev;
3463 struct velocity_info *vptr;
3464 unsigned long flags;
3466 if (dev_net(dev) != &init_net)
3469 spin_lock_irqsave(&velocity_dev_list_lock, flags);
3470 list_for_each_entry(vptr, &velocity_dev_list, list) {
3471 if (vptr->dev == dev) {
3472 velocity_get_ip(vptr);
3476 spin_unlock_irqrestore(&velocity_dev_list_lock, flags);