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.
12 * rx_copybreak/alignment
16 * The changes are (c) Copyright 2004, Red Hat Inc. <alan@redhat.com>
17 * Additional fixes and clean up: Francois Romieu
19 * This source has not been verified for use in safety critical systems.
21 * Please direct queries about the revamped driver to the linux-kernel
26 * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
27 * All rights reserved.
29 * This software may be redistributed and/or modified under
30 * the terms of the GNU General Public License as published by the Free
31 * Software Foundation; either version 2 of the License, or
34 * This program is distributed in the hope that it will be useful, but
35 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
36 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
39 * Author: Chuang Liang-Shing, AJ Jiang
43 * MODULE_LICENSE("GPL");
48 #include <linux/module.h>
49 #include <linux/types.h>
50 #include <linux/init.h>
52 #include <linux/errno.h>
53 #include <linux/ioport.h>
54 #include <linux/pci.h>
55 #include <linux/kernel.h>
56 #include <linux/netdevice.h>
57 #include <linux/etherdevice.h>
58 #include <linux/skbuff.h>
59 #include <linux/delay.h>
60 #include <linux/timer.h>
61 #include <linux/slab.h>
62 #include <linux/interrupt.h>
63 #include <linux/string.h>
64 #include <linux/wait.h>
67 #include <asm/uaccess.h>
68 #include <linux/proc_fs.h>
69 #include <linux/inetdevice.h>
70 #include <linux/reboot.h>
71 #include <linux/ethtool.h>
72 #include <linux/mii.h>
74 #include <linux/if_arp.h>
75 #include <linux/if_vlan.h>
77 #include <linux/tcp.h>
78 #include <linux/udp.h>
79 #include <linux/crc-ccitt.h>
80 #include <linux/crc32.h>
82 #include "via-velocity.h"
85 static int velocity_nics = 0;
86 static int msglevel = MSG_LEVEL_INFO;
89 * mac_get_cam_mask - Read a CAM mask
90 * @regs: register block for this velocity
91 * @mask: buffer to store mask
93 * Fetch the mask bits of the selected CAM and store them into the
94 * provided mask buffer.
97 static void mac_get_cam_mask(struct mac_regs __iomem * regs, u8 * mask)
101 /* Select CAM mask */
102 BYTE_REG_BITS_SET(CAMCR_PS_CAM_MASK, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
104 writeb(0, ®s->CAMADDR);
107 for (i = 0; i < 8; i++)
108 *mask++ = readb(&(regs->MARCAM[i]));
111 writeb(0, ®s->CAMADDR);
114 BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
120 * mac_set_cam_mask - Set a CAM mask
121 * @regs: register block for this velocity
122 * @mask: CAM mask to load
124 * Store a new mask into a CAM
127 static void mac_set_cam_mask(struct mac_regs __iomem * regs, u8 * mask)
130 /* Select CAM mask */
131 BYTE_REG_BITS_SET(CAMCR_PS_CAM_MASK, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
133 writeb(CAMADDR_CAMEN, ®s->CAMADDR);
135 for (i = 0; i < 8; i++) {
136 writeb(*mask++, &(regs->MARCAM[i]));
139 writeb(0, ®s->CAMADDR);
142 BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
145 static void mac_set_vlan_cam_mask(struct mac_regs __iomem * regs, u8 * mask)
148 /* Select CAM mask */
149 BYTE_REG_BITS_SET(CAMCR_PS_CAM_MASK, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
151 writeb(CAMADDR_CAMEN | CAMADDR_VCAMSL, ®s->CAMADDR);
153 for (i = 0; i < 8; i++) {
154 writeb(*mask++, &(regs->MARCAM[i]));
157 writeb(0, ®s->CAMADDR);
160 BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
164 * mac_set_cam - set CAM data
165 * @regs: register block of this velocity
167 * @addr: 2 or 6 bytes of CAM data
169 * Load an address or vlan tag into a CAM
172 static void mac_set_cam(struct mac_regs __iomem * regs, int idx, const u8 *addr)
176 /* Select CAM mask */
177 BYTE_REG_BITS_SET(CAMCR_PS_CAM_DATA, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
181 writeb(CAMADDR_CAMEN | idx, ®s->CAMADDR);
183 for (i = 0; i < 6; i++) {
184 writeb(*addr++, &(regs->MARCAM[i]));
186 BYTE_REG_BITS_ON(CAMCR_CAMWR, ®s->CAMCR);
190 writeb(0, ®s->CAMADDR);
193 BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
196 static void mac_set_vlan_cam(struct mac_regs __iomem * regs, int idx,
200 /* Select CAM mask */
201 BYTE_REG_BITS_SET(CAMCR_PS_CAM_DATA, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
205 writeb(CAMADDR_CAMEN | CAMADDR_VCAMSL | idx, ®s->CAMADDR);
206 writew(*((u16 *) addr), ®s->MARCAM[0]);
208 BYTE_REG_BITS_ON(CAMCR_CAMWR, ®s->CAMCR);
212 writeb(0, ®s->CAMADDR);
215 BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
220 * mac_wol_reset - reset WOL after exiting low power
221 * @regs: register block of this velocity
223 * Called after we drop out of wake on lan mode in order to
224 * reset the Wake on lan features. This function doesn't restore
225 * the rest of the logic from the result of sleep/wakeup
228 static void mac_wol_reset(struct mac_regs __iomem * regs)
231 /* Turn off SWPTAG right after leaving power mode */
232 BYTE_REG_BITS_OFF(STICKHW_SWPTAG, ®s->STICKHW);
233 /* clear sticky bits */
234 BYTE_REG_BITS_OFF((STICKHW_DS1 | STICKHW_DS0), ®s->STICKHW);
236 BYTE_REG_BITS_OFF(CHIPGCR_FCGMII, ®s->CHIPGCR);
237 BYTE_REG_BITS_OFF(CHIPGCR_FCMODE, ®s->CHIPGCR);
238 /* disable force PME-enable */
239 writeb(WOLCFG_PMEOVR, ®s->WOLCFGClr);
240 /* disable power-event config bit */
241 writew(0xFFFF, ®s->WOLCRClr);
242 /* clear power status */
243 writew(0xFFFF, ®s->WOLSRClr);
246 static int velocity_mii_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd);
247 static const struct ethtool_ops velocity_ethtool_ops;
250 Define module options
253 MODULE_AUTHOR("VIA Networking Technologies, Inc.");
254 MODULE_LICENSE("GPL");
255 MODULE_DESCRIPTION("VIA Networking Velocity Family Gigabit Ethernet Adapter Driver");
257 #define VELOCITY_PARAM(N,D) \
258 static int N[MAX_UNITS]=OPTION_DEFAULT;\
259 module_param_array(N, int, NULL, 0); \
260 MODULE_PARM_DESC(N, D);
262 #define RX_DESC_MIN 64
263 #define RX_DESC_MAX 255
264 #define RX_DESC_DEF 64
265 VELOCITY_PARAM(RxDescriptors, "Number of receive descriptors");
267 #define TX_DESC_MIN 16
268 #define TX_DESC_MAX 256
269 #define TX_DESC_DEF 64
270 VELOCITY_PARAM(TxDescriptors, "Number of transmit descriptors");
272 #define RX_THRESH_MIN 0
273 #define RX_THRESH_MAX 3
274 #define RX_THRESH_DEF 0
275 /* rx_thresh[] is used for controlling the receive fifo threshold.
276 0: indicate the rxfifo threshold is 128 bytes.
277 1: indicate the rxfifo threshold is 512 bytes.
278 2: indicate the rxfifo threshold is 1024 bytes.
279 3: indicate the rxfifo threshold is store & forward.
281 VELOCITY_PARAM(rx_thresh, "Receive fifo threshold");
283 #define DMA_LENGTH_MIN 0
284 #define DMA_LENGTH_MAX 7
285 #define DMA_LENGTH_DEF 0
287 /* DMA_length[] is used for controlling the DMA length
294 6: SF(flush till emply)
295 7: SF(flush till emply)
297 VELOCITY_PARAM(DMA_length, "DMA length");
299 #define IP_ALIG_DEF 0
300 /* IP_byte_align[] is used for IP header DWORD byte aligned
301 0: indicate the IP header won't be DWORD byte aligned.(Default) .
302 1: indicate the IP header will be DWORD byte aligned.
303 In some enviroment, the IP header should be DWORD byte aligned,
304 or the packet will be droped when we receive it. (eg: IPVS)
306 VELOCITY_PARAM(IP_byte_align, "Enable IP header dword aligned");
308 #define TX_CSUM_DEF 1
309 /* txcsum_offload[] is used for setting the checksum offload ability of NIC.
310 (We only support RX checksum offload now)
311 0: disable csum_offload[checksum offload
312 1: enable checksum offload. (Default)
314 VELOCITY_PARAM(txcsum_offload, "Enable transmit packet checksum offload");
316 #define FLOW_CNTL_DEF 1
317 #define FLOW_CNTL_MIN 1
318 #define FLOW_CNTL_MAX 5
320 /* flow_control[] is used for setting the flow control ability of NIC.
321 1: hardware deafult - AUTO (default). Use Hardware default value in ANAR.
322 2: enable TX flow control.
323 3: enable RX flow control.
324 4: enable RX/TX flow control.
327 VELOCITY_PARAM(flow_control, "Enable flow control ability");
329 #define MED_LNK_DEF 0
330 #define MED_LNK_MIN 0
331 #define MED_LNK_MAX 4
332 /* speed_duplex[] is used for setting the speed and duplex mode of NIC.
333 0: indicate autonegotiation for both speed and duplex mode
334 1: indicate 100Mbps half duplex mode
335 2: indicate 100Mbps full duplex mode
336 3: indicate 10Mbps half duplex mode
337 4: indicate 10Mbps full duplex mode
340 if EEPROM have been set to the force mode, this option is ignored
343 VELOCITY_PARAM(speed_duplex, "Setting the speed and duplex mode");
345 #define VAL_PKT_LEN_DEF 0
346 /* ValPktLen[] is used for setting the checksum offload ability of NIC.
347 0: Receive frame with invalid layer 2 length (Default)
348 1: Drop frame with invalid layer 2 length
350 VELOCITY_PARAM(ValPktLen, "Receiving or Drop invalid 802.3 frame");
352 #define WOL_OPT_DEF 0
353 #define WOL_OPT_MIN 0
354 #define WOL_OPT_MAX 7
355 /* wol_opts[] is used for controlling wake on lan behavior.
356 0: Wake up if recevied a magic packet. (Default)
357 1: Wake up if link status is on/off.
358 2: Wake up if recevied an arp packet.
359 4: Wake up if recevied any unicast packet.
360 Those value can be sumed up to support more than one option.
362 VELOCITY_PARAM(wol_opts, "Wake On Lan options");
364 #define INT_WORKS_DEF 20
365 #define INT_WORKS_MIN 10
366 #define INT_WORKS_MAX 64
368 VELOCITY_PARAM(int_works, "Number of packets per interrupt services");
370 static int rx_copybreak = 200;
371 module_param(rx_copybreak, int, 0644);
372 MODULE_PARM_DESC(rx_copybreak, "Copy breakpoint for copy-only-tiny-frames");
374 static void velocity_init_info(struct pci_dev *pdev, struct velocity_info *vptr,
375 const struct velocity_info_tbl *info);
376 static int velocity_get_pci_info(struct velocity_info *, struct pci_dev *pdev);
377 static void velocity_print_info(struct velocity_info *vptr);
378 static int velocity_open(struct net_device *dev);
379 static int velocity_change_mtu(struct net_device *dev, int mtu);
380 static int velocity_xmit(struct sk_buff *skb, struct net_device *dev);
381 static int velocity_intr(int irq, void *dev_instance);
382 static void velocity_set_multi(struct net_device *dev);
383 static struct net_device_stats *velocity_get_stats(struct net_device *dev);
384 static int velocity_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
385 static int velocity_close(struct net_device *dev);
386 static int velocity_receive_frame(struct velocity_info *, int idx);
387 static int velocity_alloc_rx_buf(struct velocity_info *, int idx);
388 static void velocity_free_rd_ring(struct velocity_info *vptr);
389 static void velocity_free_tx_buf(struct velocity_info *vptr, struct velocity_td_info *);
390 static int velocity_soft_reset(struct velocity_info *vptr);
391 static void mii_init(struct velocity_info *vptr, u32 mii_status);
392 static u32 velocity_get_link(struct net_device *dev);
393 static u32 velocity_get_opt_media_mode(struct velocity_info *vptr);
394 static void velocity_print_link_status(struct velocity_info *vptr);
395 static void safe_disable_mii_autopoll(struct mac_regs __iomem * regs);
396 static void velocity_shutdown(struct velocity_info *vptr);
397 static void enable_flow_control_ability(struct velocity_info *vptr);
398 static void enable_mii_autopoll(struct mac_regs __iomem * regs);
399 static int velocity_mii_read(struct mac_regs __iomem *, u8 byIdx, u16 * pdata);
400 static int velocity_mii_write(struct mac_regs __iomem *, u8 byMiiAddr, u16 data);
401 static u32 mii_check_media_mode(struct mac_regs __iomem * regs);
402 static u32 check_connection_type(struct mac_regs __iomem * regs);
403 static int velocity_set_media_mode(struct velocity_info *vptr, u32 mii_status);
407 static int velocity_suspend(struct pci_dev *pdev, pm_message_t state);
408 static int velocity_resume(struct pci_dev *pdev);
410 static DEFINE_SPINLOCK(velocity_dev_list_lock);
411 static LIST_HEAD(velocity_dev_list);
415 #if defined(CONFIG_PM) && defined(CONFIG_INET)
417 static int velocity_netdev_event(struct notifier_block *nb, unsigned long notification, void *ptr);
419 static struct notifier_block velocity_inetaddr_notifier = {
420 .notifier_call = velocity_netdev_event,
423 static void velocity_register_notifier(void)
425 register_inetaddr_notifier(&velocity_inetaddr_notifier);
428 static void velocity_unregister_notifier(void)
430 unregister_inetaddr_notifier(&velocity_inetaddr_notifier);
435 #define velocity_register_notifier() do {} while (0)
436 #define velocity_unregister_notifier() do {} while (0)
441 * Internal board variants. At the moment we have only one
444 static const struct velocity_info_tbl chip_info_table[] __devinitdata = {
445 {CHIP_TYPE_VT6110, "VIA Networking Velocity Family Gigabit Ethernet Adapter", 1, 0x00FFFFFFUL},
450 * Describe the PCI device identifiers that we support in this
451 * device driver. Used for hotplug autoloading.
454 static const struct pci_device_id velocity_id_table[] __devinitdata = {
455 { PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_612X) },
459 MODULE_DEVICE_TABLE(pci, velocity_id_table);
462 * get_chip_name - identifier to name
463 * @id: chip identifier
465 * Given a chip identifier return a suitable description. Returns
466 * a pointer a static string valid while the driver is loaded.
469 static const char __devinit *get_chip_name(enum chip_type chip_id)
472 for (i = 0; chip_info_table[i].name != NULL; i++)
473 if (chip_info_table[i].chip_id == chip_id)
475 return chip_info_table[i].name;
479 * velocity_remove1 - device unplug
480 * @pdev: PCI device being removed
482 * Device unload callback. Called on an unplug or on module
483 * unload for each active device that is present. Disconnects
484 * the device from the network layer and frees all the resources
487 static void __devexit velocity_remove1(struct pci_dev *pdev)
489 struct net_device *dev = pci_get_drvdata(pdev);
490 struct velocity_info *vptr = netdev_priv(dev);
495 spin_lock_irqsave(&velocity_dev_list_lock, flags);
496 if (!list_empty(&velocity_dev_list))
497 list_del(&vptr->list);
498 spin_unlock_irqrestore(&velocity_dev_list_lock, flags);
500 unregister_netdev(dev);
501 iounmap(vptr->mac_regs);
502 pci_release_regions(pdev);
503 pci_disable_device(pdev);
504 pci_set_drvdata(pdev, NULL);
511 * velocity_set_int_opt - parser for integer options
512 * @opt: pointer to option value
513 * @val: value the user requested (or -1 for default)
514 * @min: lowest value allowed
515 * @max: highest value allowed
516 * @def: default value
517 * @name: property name
520 * Set an integer property in the module options. This function does
521 * all the verification and checking as well as reporting so that
522 * we don't duplicate code for each option.
525 static void __devinit velocity_set_int_opt(int *opt, int val, int min, int max, int def, char *name, char *devname)
529 else if (val < min || val > max) {
530 VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: the value of parameter %s is invalid, the valid range is (%d-%d)\n",
531 devname, name, min, max);
534 VELOCITY_PRT(MSG_LEVEL_INFO, KERN_INFO "%s: set value of parameter %s to %d\n",
541 * velocity_set_bool_opt - parser for boolean options
542 * @opt: pointer to option value
543 * @val: value the user requested (or -1 for default)
544 * @def: default value (yes/no)
545 * @flag: numeric value to set for true.
546 * @name: property name
549 * Set a boolean property in the module options. This function does
550 * all the verification and checking as well as reporting so that
551 * we don't duplicate code for each option.
554 static void __devinit velocity_set_bool_opt(u32 * opt, int val, int def, u32 flag, char *name, char *devname)
558 *opt |= (def ? flag : 0);
559 else if (val < 0 || val > 1) {
560 printk(KERN_NOTICE "%s: the value of parameter %s is invalid, the valid range is (0-1)\n",
562 *opt |= (def ? flag : 0);
564 printk(KERN_INFO "%s: set parameter %s to %s\n",
565 devname, name, val ? "TRUE" : "FALSE");
566 *opt |= (val ? flag : 0);
571 * velocity_get_options - set options on device
572 * @opts: option structure for the device
573 * @index: index of option to use in module options array
574 * @devname: device name
576 * Turn the module and command options into a single structure
577 * for the current device
580 static void __devinit velocity_get_options(struct velocity_opt *opts, int index, char *devname)
583 velocity_set_int_opt(&opts->rx_thresh, rx_thresh[index], RX_THRESH_MIN, RX_THRESH_MAX, RX_THRESH_DEF, "rx_thresh", devname);
584 velocity_set_int_opt(&opts->DMA_length, DMA_length[index], DMA_LENGTH_MIN, DMA_LENGTH_MAX, DMA_LENGTH_DEF, "DMA_length", devname);
585 velocity_set_int_opt(&opts->numrx, RxDescriptors[index], RX_DESC_MIN, RX_DESC_MAX, RX_DESC_DEF, "RxDescriptors", devname);
586 velocity_set_int_opt(&opts->numtx, TxDescriptors[index], TX_DESC_MIN, TX_DESC_MAX, TX_DESC_DEF, "TxDescriptors", devname);
588 velocity_set_bool_opt(&opts->flags, txcsum_offload[index], TX_CSUM_DEF, VELOCITY_FLAGS_TX_CSUM, "txcsum_offload", devname);
589 velocity_set_int_opt(&opts->flow_cntl, flow_control[index], FLOW_CNTL_MIN, FLOW_CNTL_MAX, FLOW_CNTL_DEF, "flow_control", devname);
590 velocity_set_bool_opt(&opts->flags, IP_byte_align[index], IP_ALIG_DEF, VELOCITY_FLAGS_IP_ALIGN, "IP_byte_align", devname);
591 velocity_set_bool_opt(&opts->flags, ValPktLen[index], VAL_PKT_LEN_DEF, VELOCITY_FLAGS_VAL_PKT_LEN, "ValPktLen", devname);
592 velocity_set_int_opt((int *) &opts->spd_dpx, speed_duplex[index], MED_LNK_MIN, MED_LNK_MAX, MED_LNK_DEF, "Media link mode", devname);
593 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);
594 velocity_set_int_opt((int *) &opts->int_works, int_works[index], INT_WORKS_MIN, INT_WORKS_MAX, INT_WORKS_DEF, "Interrupt service works", devname);
595 opts->numrx = (opts->numrx & ~3);
599 * velocity_init_cam_filter - initialise CAM
600 * @vptr: velocity to program
602 * Initialize the content addressable memory used for filters. Load
603 * appropriately according to the presence of VLAN
606 static void velocity_init_cam_filter(struct velocity_info *vptr)
608 struct mac_regs __iomem * regs = vptr->mac_regs;
611 /* Turn on MCFG_PQEN, turn off MCFG_RTGOPT */
612 WORD_REG_BITS_SET(MCFG_PQEN, MCFG_RTGOPT, ®s->MCFG);
613 WORD_REG_BITS_ON(MCFG_VIDFR, ®s->MCFG);
615 /* Disable all CAMs */
616 memset(vptr->vCAMmask, 0, sizeof(u8) * 8);
617 memset(vptr->mCAMmask, 0, sizeof(u8) * 8);
618 mac_set_vlan_cam_mask(regs, vptr->vCAMmask);
619 mac_set_cam_mask(regs, vptr->mCAMmask);
621 /* Enable first VCAM */
623 for (vid = 0; vid < VLAN_VID_MASK; vid++) {
624 if (vlan_group_get_device(vptr->vlgrp, vid)) {
625 /* If Tagging option is enabled and
626 VLAN ID is not zero, then
627 turn on MCFG_RTGOPT also */
629 WORD_REG_BITS_ON(MCFG_RTGOPT, ®s->MCFG);
631 mac_set_vlan_cam(regs, 0, (u8 *) &vid);
634 vptr->vCAMmask[0] |= 1;
635 mac_set_vlan_cam_mask(regs, vptr->vCAMmask);
638 mac_set_vlan_cam(regs, 0, (u8 *) &temp);
640 mac_set_vlan_cam_mask(regs, (u8 *) &temp);
644 static void velocity_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
646 struct velocity_info *vptr = netdev_priv(dev);
648 spin_lock_irq(&vptr->lock);
649 velocity_init_cam_filter(vptr);
650 spin_unlock_irq(&vptr->lock);
653 static void velocity_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
655 struct velocity_info *vptr = netdev_priv(dev);
657 spin_lock_irq(&vptr->lock);
658 vlan_group_set_device(vptr->vlgrp, vid, NULL);
659 velocity_init_cam_filter(vptr);
660 spin_unlock_irq(&vptr->lock);
665 * velocity_rx_reset - handle a receive reset
666 * @vptr: velocity we are resetting
668 * Reset the ownership and status for the receive ring side.
669 * Hand all the receive queue to the NIC.
672 static void velocity_rx_reset(struct velocity_info *vptr)
675 struct mac_regs __iomem * regs = vptr->mac_regs;
678 vptr->rd_dirty = vptr->rd_filled = vptr->rd_curr = 0;
681 * Init state, all RD entries belong to the NIC
683 for (i = 0; i < vptr->options.numrx; ++i)
684 vptr->rd_ring[i].rdesc0.owner = OWNED_BY_NIC;
686 writew(vptr->options.numrx, ®s->RBRDU);
687 writel(vptr->rd_pool_dma, ®s->RDBaseLo);
688 writew(0, ®s->RDIdx);
689 writew(vptr->options.numrx - 1, ®s->RDCSize);
693 * velocity_init_registers - initialise MAC registers
694 * @vptr: velocity to init
695 * @type: type of initialisation (hot or cold)
697 * Initialise the MAC on a reset or on first set up on the
701 static void velocity_init_registers(struct velocity_info *vptr,
702 enum velocity_init_type type)
704 struct mac_regs __iomem * regs = vptr->mac_regs;
710 case VELOCITY_INIT_RESET:
711 case VELOCITY_INIT_WOL:
713 netif_stop_queue(vptr->dev);
716 * Reset RX to prevent RX pointer not on the 4X location
718 velocity_rx_reset(vptr);
719 mac_rx_queue_run(regs);
720 mac_rx_queue_wake(regs);
722 mii_status = velocity_get_opt_media_mode(vptr);
723 if (velocity_set_media_mode(vptr, mii_status) != VELOCITY_LINK_CHANGE) {
724 velocity_print_link_status(vptr);
725 if (!(vptr->mii_status & VELOCITY_LINK_FAIL))
726 netif_wake_queue(vptr->dev);
729 enable_flow_control_ability(vptr);
732 writel(CR0_STOP, ®s->CR0Clr);
733 writel((CR0_DPOLL | CR0_TXON | CR0_RXON | CR0_STRT),
738 case VELOCITY_INIT_COLD:
743 velocity_soft_reset(vptr);
746 mac_eeprom_reload(regs);
747 for (i = 0; i < 6; i++) {
748 writeb(vptr->dev->dev_addr[i], &(regs->PAR[i]));
751 * clear Pre_ACPI bit.
753 BYTE_REG_BITS_OFF(CFGA_PACPI, &(regs->CFGA));
754 mac_set_rx_thresh(regs, vptr->options.rx_thresh);
755 mac_set_dma_length(regs, vptr->options.DMA_length);
757 writeb(WOLCFG_SAM | WOLCFG_SAB, ®s->WOLCFGSet);
759 * Back off algorithm use original IEEE standard
761 BYTE_REG_BITS_SET(CFGB_OFSET, (CFGB_CRANDOM | CFGB_CAP | CFGB_MBA | CFGB_BAKOPT), ®s->CFGB);
766 velocity_init_cam_filter(vptr);
769 * Set packet filter: Receive directed and broadcast address
771 velocity_set_multi(vptr->dev);
774 * Enable MII auto-polling
776 enable_mii_autopoll(regs);
778 vptr->int_mask = INT_MASK_DEF;
780 writel(cpu_to_le32(vptr->rd_pool_dma), ®s->RDBaseLo);
781 writew(vptr->options.numrx - 1, ®s->RDCSize);
782 mac_rx_queue_run(regs);
783 mac_rx_queue_wake(regs);
785 writew(vptr->options.numtx - 1, ®s->TDCSize);
787 for (i = 0; i < vptr->num_txq; i++) {
788 writel(cpu_to_le32(vptr->td_pool_dma[i]), &(regs->TDBaseLo[i]));
789 mac_tx_queue_run(regs, i);
792 init_flow_control_register(vptr);
794 writel(CR0_STOP, ®s->CR0Clr);
795 writel((CR0_DPOLL | CR0_TXON | CR0_RXON | CR0_STRT), ®s->CR0Set);
797 mii_status = velocity_get_opt_media_mode(vptr);
798 netif_stop_queue(vptr->dev);
800 mii_init(vptr, mii_status);
802 if (velocity_set_media_mode(vptr, mii_status) != VELOCITY_LINK_CHANGE) {
803 velocity_print_link_status(vptr);
804 if (!(vptr->mii_status & VELOCITY_LINK_FAIL))
805 netif_wake_queue(vptr->dev);
808 enable_flow_control_ability(vptr);
809 mac_hw_mibs_init(regs);
810 mac_write_int_mask(vptr->int_mask, regs);
817 * velocity_soft_reset - soft reset
818 * @vptr: velocity to reset
820 * Kick off a soft reset of the velocity adapter and then poll
821 * until the reset sequence has completed before returning.
824 static int velocity_soft_reset(struct velocity_info *vptr)
826 struct mac_regs __iomem * regs = vptr->mac_regs;
829 writel(CR0_SFRST, ®s->CR0Set);
831 for (i = 0; i < W_MAX_TIMEOUT; i++) {
833 if (!DWORD_REG_BITS_IS_ON(CR0_SFRST, ®s->CR0Set))
837 if (i == W_MAX_TIMEOUT) {
838 writel(CR0_FORSRST, ®s->CR0Set);
839 /* FIXME: PCI POSTING */
847 * velocity_found1 - set up discovered velocity card
849 * @ent: PCI device table entry that matched
851 * Configure a discovered adapter from scratch. Return a negative
852 * errno error code on failure paths.
855 static int __devinit velocity_found1(struct pci_dev *pdev, const struct pci_device_id *ent)
857 static int first = 1;
858 struct net_device *dev;
860 const struct velocity_info_tbl *info = &chip_info_table[ent->driver_data];
861 struct velocity_info *vptr;
862 struct mac_regs __iomem * regs;
865 /* FIXME: this driver, like almost all other ethernet drivers,
866 * can support more than MAX_UNITS.
868 if (velocity_nics >= MAX_UNITS) {
869 dev_notice(&pdev->dev, "already found %d NICs.\n",
874 dev = alloc_etherdev(sizeof(struct velocity_info));
876 dev_err(&pdev->dev, "allocate net device failed.\n");
880 /* Chain it all together */
882 SET_NETDEV_DEV(dev, &pdev->dev);
883 vptr = netdev_priv(dev);
887 printk(KERN_INFO "%s Ver. %s\n",
888 VELOCITY_FULL_DRV_NAM, VELOCITY_VERSION);
889 printk(KERN_INFO "Copyright (c) 2002, 2003 VIA Networking Technologies, Inc.\n");
890 printk(KERN_INFO "Copyright (c) 2004 Red Hat Inc.\n");
894 velocity_init_info(pdev, vptr, info);
898 dev->irq = pdev->irq;
900 ret = pci_enable_device(pdev);
904 ret = velocity_get_pci_info(vptr, pdev);
906 /* error message already printed */
910 ret = pci_request_regions(pdev, VELOCITY_NAME);
912 dev_err(&pdev->dev, "No PCI resources.\n");
916 regs = ioremap(vptr->memaddr, VELOCITY_IO_SIZE);
919 goto err_release_res;
922 vptr->mac_regs = regs;
926 dev->base_addr = vptr->ioaddr;
928 for (i = 0; i < 6; i++)
929 dev->dev_addr[i] = readb(®s->PAR[i]);
932 velocity_get_options(&vptr->options, velocity_nics, dev->name);
935 * Mask out the options cannot be set to the chip
938 vptr->options.flags &= info->flags;
941 * Enable the chip specified capbilities
944 vptr->flags = vptr->options.flags | (info->flags & 0xFF000000UL);
946 vptr->wol_opts = vptr->options.wol_opts;
947 vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
949 vptr->phy_id = MII_GET_PHY_ID(vptr->mac_regs);
951 dev->irq = pdev->irq;
952 dev->open = velocity_open;
953 dev->hard_start_xmit = velocity_xmit;
954 dev->stop = velocity_close;
955 dev->get_stats = velocity_get_stats;
956 dev->set_multicast_list = velocity_set_multi;
957 dev->do_ioctl = velocity_ioctl;
958 dev->ethtool_ops = &velocity_ethtool_ops;
959 dev->change_mtu = velocity_change_mtu;
961 dev->vlan_rx_add_vid = velocity_vlan_rx_add_vid;
962 dev->vlan_rx_kill_vid = velocity_vlan_rx_kill_vid;
964 #ifdef VELOCITY_ZERO_COPY_SUPPORT
965 dev->features |= NETIF_F_SG;
967 dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER;
969 if (vptr->flags & VELOCITY_FLAGS_TX_CSUM)
970 dev->features |= NETIF_F_IP_CSUM;
972 ret = register_netdev(dev);
976 if (velocity_get_link(dev))
977 netif_carrier_off(dev);
979 velocity_print_info(vptr);
980 pci_set_drvdata(pdev, dev);
982 /* and leave the chip powered down */
984 pci_set_power_state(pdev, PCI_D3hot);
989 spin_lock_irqsave(&velocity_dev_list_lock, flags);
990 list_add(&vptr->list, &velocity_dev_list);
991 spin_unlock_irqrestore(&velocity_dev_list_lock, flags);
1001 pci_release_regions(pdev);
1003 pci_disable_device(pdev);
1010 * velocity_print_info - per driver data
1013 * Print per driver data as the kernel driver finds Velocity
1017 static void __devinit velocity_print_info(struct velocity_info *vptr)
1019 struct net_device *dev = vptr->dev;
1021 printk(KERN_INFO "%s: %s\n", dev->name, get_chip_name(vptr->chip_id));
1022 printk(KERN_INFO "%s: Ethernet Address: %2.2X:%2.2X:%2.2X:%2.2X:%2.2X:%2.2X\n",
1024 dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2],
1025 dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5]);
1029 * velocity_init_info - init private data
1031 * @vptr: Velocity info
1034 * Set up the initial velocity_info struct for the device that has been
1038 static void __devinit velocity_init_info(struct pci_dev *pdev,
1039 struct velocity_info *vptr,
1040 const struct velocity_info_tbl *info)
1042 memset(vptr, 0, sizeof(struct velocity_info));
1045 vptr->chip_id = info->chip_id;
1046 vptr->num_txq = info->txqueue;
1047 vptr->multicast_limit = MCAM_SIZE;
1048 spin_lock_init(&vptr->lock);
1049 INIT_LIST_HEAD(&vptr->list);
1053 * velocity_get_pci_info - retrieve PCI info for device
1054 * @vptr: velocity device
1055 * @pdev: PCI device it matches
1057 * Retrieve the PCI configuration space data that interests us from
1058 * the kernel PCI layer
1061 static int __devinit velocity_get_pci_info(struct velocity_info *vptr, struct pci_dev *pdev)
1063 vptr->rev_id = pdev->revision;
1065 pci_set_master(pdev);
1067 vptr->ioaddr = pci_resource_start(pdev, 0);
1068 vptr->memaddr = pci_resource_start(pdev, 1);
1070 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_IO)) {
1072 "region #0 is not an I/O resource, aborting.\n");
1076 if ((pci_resource_flags(pdev, 1) & IORESOURCE_IO)) {
1078 "region #1 is an I/O resource, aborting.\n");
1082 if (pci_resource_len(pdev, 1) < VELOCITY_IO_SIZE) {
1083 dev_err(&pdev->dev, "region #1 is too small.\n");
1092 * velocity_init_rings - set up DMA rings
1093 * @vptr: Velocity to set up
1095 * Allocate PCI mapped DMA rings for the receive and transmit layer
1099 static int velocity_init_rings(struct velocity_info *vptr)
1104 dma_addr_t pool_dma;
1108 * Allocate all RD/TD rings a single pool
1111 psize = vptr->options.numrx * sizeof(struct rx_desc) +
1112 vptr->options.numtx * sizeof(struct tx_desc) * vptr->num_txq;
1115 * pci_alloc_consistent() fulfills the requirement for 64 bytes
1118 pool = pci_alloc_consistent(vptr->pdev, psize, &pool_dma);
1121 printk(KERN_ERR "%s : DMA memory allocation failed.\n",
1126 memset(pool, 0, psize);
1128 vptr->rd_ring = (struct rx_desc *) pool;
1130 vptr->rd_pool_dma = pool_dma;
1132 tsize = vptr->options.numtx * PKT_BUF_SZ * vptr->num_txq;
1133 vptr->tx_bufs = pci_alloc_consistent(vptr->pdev, tsize,
1134 &vptr->tx_bufs_dma);
1136 if (vptr->tx_bufs == NULL) {
1137 printk(KERN_ERR "%s: DMA memory allocation failed.\n",
1139 pci_free_consistent(vptr->pdev, psize, pool, pool_dma);
1143 memset(vptr->tx_bufs, 0, vptr->options.numtx * PKT_BUF_SZ * vptr->num_txq);
1145 i = vptr->options.numrx * sizeof(struct rx_desc);
1148 for (i = 0; i < vptr->num_txq; i++) {
1149 int offset = vptr->options.numtx * sizeof(struct tx_desc);
1151 vptr->td_pool_dma[i] = pool_dma;
1152 vptr->td_rings[i] = (struct tx_desc *) pool;
1160 * velocity_free_rings - free PCI ring pointers
1161 * @vptr: Velocity to free from
1163 * Clean up the PCI ring buffers allocated to this velocity.
1166 static void velocity_free_rings(struct velocity_info *vptr)
1170 size = vptr->options.numrx * sizeof(struct rx_desc) +
1171 vptr->options.numtx * sizeof(struct tx_desc) * vptr->num_txq;
1173 pci_free_consistent(vptr->pdev, size, vptr->rd_ring, vptr->rd_pool_dma);
1175 size = vptr->options.numtx * PKT_BUF_SZ * vptr->num_txq;
1177 pci_free_consistent(vptr->pdev, size, vptr->tx_bufs, vptr->tx_bufs_dma);
1180 static inline void velocity_give_many_rx_descs(struct velocity_info *vptr)
1182 struct mac_regs __iomem *regs = vptr->mac_regs;
1183 int avail, dirty, unusable;
1186 * RD number must be equal to 4X per hardware spec
1187 * (programming guide rev 1.20, p.13)
1189 if (vptr->rd_filled < 4)
1194 unusable = vptr->rd_filled & 0x0003;
1195 dirty = vptr->rd_dirty - unusable;
1196 for (avail = vptr->rd_filled & 0xfffc; avail; avail--) {
1197 dirty = (dirty > 0) ? dirty - 1 : vptr->options.numrx - 1;
1198 vptr->rd_ring[dirty].rdesc0.owner = OWNED_BY_NIC;
1201 writew(vptr->rd_filled & 0xfffc, ®s->RBRDU);
1202 vptr->rd_filled = unusable;
1205 static int velocity_rx_refill(struct velocity_info *vptr)
1207 int dirty = vptr->rd_dirty, done = 0, ret = 0;
1210 struct rx_desc *rd = vptr->rd_ring + dirty;
1212 /* Fine for an all zero Rx desc at init time as well */
1213 if (rd->rdesc0.owner == OWNED_BY_NIC)
1216 if (!vptr->rd_info[dirty].skb) {
1217 ret = velocity_alloc_rx_buf(vptr, dirty);
1222 dirty = (dirty < vptr->options.numrx - 1) ? dirty + 1 : 0;
1223 } while (dirty != vptr->rd_curr);
1226 vptr->rd_dirty = dirty;
1227 vptr->rd_filled += done;
1228 velocity_give_many_rx_descs(vptr);
1235 * velocity_init_rd_ring - set up receive ring
1236 * @vptr: velocity to configure
1238 * Allocate and set up the receive buffers for each ring slot and
1239 * assign them to the network adapter.
1242 static int velocity_init_rd_ring(struct velocity_info *vptr)
1246 vptr->rd_info = kcalloc(vptr->options.numrx,
1247 sizeof(struct velocity_rd_info), GFP_KERNEL);
1251 vptr->rd_filled = vptr->rd_dirty = vptr->rd_curr = 0;
1253 ret = velocity_rx_refill(vptr);
1255 VELOCITY_PRT(MSG_LEVEL_ERR, KERN_ERR
1256 "%s: failed to allocate RX buffer.\n", vptr->dev->name);
1257 velocity_free_rd_ring(vptr);
1264 * velocity_free_rd_ring - free receive ring
1265 * @vptr: velocity to clean up
1267 * Free the receive buffers for each ring slot and any
1268 * attached socket buffers that need to go away.
1271 static void velocity_free_rd_ring(struct velocity_info *vptr)
1275 if (vptr->rd_info == NULL)
1278 for (i = 0; i < vptr->options.numrx; i++) {
1279 struct velocity_rd_info *rd_info = &(vptr->rd_info[i]);
1280 struct rx_desc *rd = vptr->rd_ring + i;
1282 memset(rd, 0, sizeof(*rd));
1286 pci_unmap_single(vptr->pdev, rd_info->skb_dma, vptr->rx_buf_sz,
1287 PCI_DMA_FROMDEVICE);
1288 rd_info->skb_dma = (dma_addr_t) NULL;
1290 dev_kfree_skb(rd_info->skb);
1291 rd_info->skb = NULL;
1294 kfree(vptr->rd_info);
1295 vptr->rd_info = NULL;
1299 * velocity_init_td_ring - set up transmit ring
1302 * Set up the transmit ring and chain the ring pointers together.
1303 * Returns zero on success or a negative posix errno code for
1307 static int velocity_init_td_ring(struct velocity_info *vptr)
1312 struct velocity_td_info *td_info;
1314 /* Init the TD ring entries */
1315 for (j = 0; j < vptr->num_txq; j++) {
1316 curr = vptr->td_pool_dma[j];
1318 vptr->td_infos[j] = kcalloc(vptr->options.numtx,
1319 sizeof(struct velocity_td_info),
1321 if (!vptr->td_infos[j]) {
1323 kfree(vptr->td_infos[j]);
1327 for (i = 0; i < vptr->options.numtx; i++, curr += sizeof(struct tx_desc)) {
1328 td = &(vptr->td_rings[j][i]);
1329 td_info = &(vptr->td_infos[j][i]);
1330 td_info->buf = vptr->tx_bufs +
1331 (j * vptr->options.numtx + i) * PKT_BUF_SZ;
1332 td_info->buf_dma = vptr->tx_bufs_dma +
1333 (j * vptr->options.numtx + i) * PKT_BUF_SZ;
1335 vptr->td_tail[j] = vptr->td_curr[j] = vptr->td_used[j] = 0;
1341 * FIXME: could we merge this with velocity_free_tx_buf ?
1344 static void velocity_free_td_ring_entry(struct velocity_info *vptr,
1347 struct velocity_td_info * td_info = &(vptr->td_infos[q][n]);
1350 if (td_info == NULL)
1354 for (i = 0; i < td_info->nskb_dma; i++)
1356 if (td_info->skb_dma[i]) {
1357 pci_unmap_single(vptr->pdev, td_info->skb_dma[i],
1358 td_info->skb->len, PCI_DMA_TODEVICE);
1359 td_info->skb_dma[i] = (dma_addr_t) NULL;
1362 dev_kfree_skb(td_info->skb);
1363 td_info->skb = NULL;
1368 * velocity_free_td_ring - free td ring
1371 * Free up the transmit ring for this particular velocity adapter.
1372 * We free the ring contents but not the ring itself.
1375 static void velocity_free_td_ring(struct velocity_info *vptr)
1379 for (j = 0; j < vptr->num_txq; j++) {
1380 if (vptr->td_infos[j] == NULL)
1382 for (i = 0; i < vptr->options.numtx; i++) {
1383 velocity_free_td_ring_entry(vptr, j, i);
1386 kfree(vptr->td_infos[j]);
1387 vptr->td_infos[j] = NULL;
1392 * velocity_rx_srv - service RX interrupt
1394 * @status: adapter status (unused)
1396 * Walk the receive ring of the velocity adapter and remove
1397 * any received packets from the receive queue. Hand the ring
1398 * slots back to the adapter for reuse.
1401 static int velocity_rx_srv(struct velocity_info *vptr, int status)
1403 struct net_device_stats *stats = &vptr->stats;
1404 int rd_curr = vptr->rd_curr;
1408 struct rx_desc *rd = vptr->rd_ring + rd_curr;
1410 if (!vptr->rd_info[rd_curr].skb)
1413 if (rd->rdesc0.owner == OWNED_BY_NIC)
1419 * Don't drop CE or RL error frame although RXOK is off
1421 if ((rd->rdesc0.RSR & RSR_RXOK) || (!(rd->rdesc0.RSR & RSR_RXOK) && (rd->rdesc0.RSR & (RSR_CE | RSR_RL)))) {
1422 if (velocity_receive_frame(vptr, rd_curr) < 0)
1423 stats->rx_dropped++;
1425 if (rd->rdesc0.RSR & RSR_CRC)
1426 stats->rx_crc_errors++;
1427 if (rd->rdesc0.RSR & RSR_FAE)
1428 stats->rx_frame_errors++;
1430 stats->rx_dropped++;
1435 vptr->dev->last_rx = jiffies;
1438 if (rd_curr >= vptr->options.numrx)
1440 } while (++works <= 15);
1442 vptr->rd_curr = rd_curr;
1444 if (works > 0 && velocity_rx_refill(vptr) < 0) {
1445 VELOCITY_PRT(MSG_LEVEL_ERR, KERN_ERR
1446 "%s: rx buf allocation failure\n", vptr->dev->name);
1454 * velocity_rx_csum - checksum process
1455 * @rd: receive packet descriptor
1456 * @skb: network layer packet buffer
1458 * Process the status bits for the received packet and determine
1459 * if the checksum was computed and verified by the hardware
1462 static inline void velocity_rx_csum(struct rx_desc *rd, struct sk_buff *skb)
1464 skb->ip_summed = CHECKSUM_NONE;
1466 if (rd->rdesc1.CSM & CSM_IPKT) {
1467 if (rd->rdesc1.CSM & CSM_IPOK) {
1468 if ((rd->rdesc1.CSM & CSM_TCPKT) ||
1469 (rd->rdesc1.CSM & CSM_UDPKT)) {
1470 if (!(rd->rdesc1.CSM & CSM_TUPOK)) {
1474 skb->ip_summed = CHECKSUM_UNNECESSARY;
1480 * velocity_rx_copy - in place Rx copy for small packets
1481 * @rx_skb: network layer packet buffer candidate
1482 * @pkt_size: received data size
1483 * @rd: receive packet descriptor
1484 * @dev: network device
1486 * Replace the current skb that is scheduled for Rx processing by a
1487 * shorter, immediatly allocated skb, if the received packet is small
1488 * enough. This function returns a negative value if the received
1489 * packet is too big or if memory is exhausted.
1491 static inline int velocity_rx_copy(struct sk_buff **rx_skb, int pkt_size,
1492 struct velocity_info *vptr)
1496 if (pkt_size < rx_copybreak) {
1497 struct sk_buff *new_skb;
1499 new_skb = dev_alloc_skb(pkt_size + 2);
1501 new_skb->dev = vptr->dev;
1502 new_skb->ip_summed = rx_skb[0]->ip_summed;
1504 if (vptr->flags & VELOCITY_FLAGS_IP_ALIGN)
1505 skb_reserve(new_skb, 2);
1507 skb_copy_from_linear_data(rx_skb[0], new_skb->data,
1518 * velocity_iph_realign - IP header alignment
1519 * @vptr: velocity we are handling
1520 * @skb: network layer packet buffer
1521 * @pkt_size: received data size
1523 * Align IP header on a 2 bytes boundary. This behavior can be
1524 * configured by the user.
1526 static inline void velocity_iph_realign(struct velocity_info *vptr,
1527 struct sk_buff *skb, int pkt_size)
1529 /* FIXME - memmove ? */
1530 if (vptr->flags & VELOCITY_FLAGS_IP_ALIGN) {
1533 for (i = pkt_size; i >= 0; i--)
1534 *(skb->data + i + 2) = *(skb->data + i);
1535 skb_reserve(skb, 2);
1540 * velocity_receive_frame - received packet processor
1541 * @vptr: velocity we are handling
1544 * A packet has arrived. We process the packet and if appropriate
1545 * pass the frame up the network stack
1548 static int velocity_receive_frame(struct velocity_info *vptr, int idx)
1550 void (*pci_action)(struct pci_dev *, dma_addr_t, size_t, int);
1551 struct net_device_stats *stats = &vptr->stats;
1552 struct velocity_rd_info *rd_info = &(vptr->rd_info[idx]);
1553 struct rx_desc *rd = &(vptr->rd_ring[idx]);
1554 int pkt_len = rd->rdesc0.len;
1555 struct sk_buff *skb;
1557 if (rd->rdesc0.RSR & (RSR_STP | RSR_EDP)) {
1558 VELOCITY_PRT(MSG_LEVEL_VERBOSE, KERN_ERR " %s : the received frame span multple RDs.\n", vptr->dev->name);
1559 stats->rx_length_errors++;
1563 if (rd->rdesc0.RSR & RSR_MAR)
1564 vptr->stats.multicast++;
1568 pci_dma_sync_single_for_cpu(vptr->pdev, rd_info->skb_dma,
1569 vptr->rx_buf_sz, PCI_DMA_FROMDEVICE);
1572 * Drop frame not meeting IEEE 802.3
1575 if (vptr->flags & VELOCITY_FLAGS_VAL_PKT_LEN) {
1576 if (rd->rdesc0.RSR & RSR_RL) {
1577 stats->rx_length_errors++;
1582 pci_action = pci_dma_sync_single_for_device;
1584 velocity_rx_csum(rd, skb);
1586 if (velocity_rx_copy(&skb, pkt_len, vptr) < 0) {
1587 velocity_iph_realign(vptr, skb, pkt_len);
1588 pci_action = pci_unmap_single;
1589 rd_info->skb = NULL;
1592 pci_action(vptr->pdev, rd_info->skb_dma, vptr->rx_buf_sz,
1593 PCI_DMA_FROMDEVICE);
1595 skb_put(skb, pkt_len - 4);
1596 skb->protocol = eth_type_trans(skb, vptr->dev);
1598 stats->rx_bytes += pkt_len;
1605 * velocity_alloc_rx_buf - allocate aligned receive buffer
1609 * Allocate a new full sized buffer for the reception of a frame and
1610 * map it into PCI space for the hardware to use. The hardware
1611 * requires *64* byte alignment of the buffer which makes life
1612 * less fun than would be ideal.
1615 static int velocity_alloc_rx_buf(struct velocity_info *vptr, int idx)
1617 struct rx_desc *rd = &(vptr->rd_ring[idx]);
1618 struct velocity_rd_info *rd_info = &(vptr->rd_info[idx]);
1620 rd_info->skb = dev_alloc_skb(vptr->rx_buf_sz + 64);
1621 if (rd_info->skb == NULL)
1625 * Do the gymnastics to get the buffer head for data at
1628 skb_reserve(rd_info->skb, (unsigned long) rd_info->skb->data & 63);
1629 rd_info->skb->dev = vptr->dev;
1630 rd_info->skb_dma = pci_map_single(vptr->pdev, rd_info->skb->data, vptr->rx_buf_sz, PCI_DMA_FROMDEVICE);
1633 * Fill in the descriptor to match
1636 *((u32 *) & (rd->rdesc0)) = 0;
1637 rd->len = cpu_to_le32(vptr->rx_buf_sz);
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.owner == 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], 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 vptr->rx_buf_sz = (dev->mtu <= 1504 ? PKT_BUF_SZ : dev->mtu + 32);
1903 ret = velocity_init_rings(vptr);
1907 ret = velocity_init_rd_ring(vptr);
1909 goto err_free_desc_rings;
1911 ret = velocity_init_td_ring(vptr);
1913 goto err_free_rd_ring;
1915 /* Ensure chip is running */
1916 pci_set_power_state(vptr->pdev, PCI_D0);
1918 velocity_init_registers(vptr, VELOCITY_INIT_COLD);
1920 ret = request_irq(vptr->pdev->irq, &velocity_intr, IRQF_SHARED,
1923 /* Power down the chip */
1924 pci_set_power_state(vptr->pdev, PCI_D3hot);
1925 goto err_free_td_ring;
1928 mac_enable_int(vptr->mac_regs);
1929 netif_start_queue(dev);
1930 vptr->flags |= VELOCITY_FLAGS_OPENED;
1935 velocity_free_td_ring(vptr);
1937 velocity_free_rd_ring(vptr);
1938 err_free_desc_rings:
1939 velocity_free_rings(vptr);
1944 * velocity_change_mtu - MTU change callback
1945 * @dev: network device
1946 * @new_mtu: desired MTU
1948 * Handle requests from the networking layer for MTU change on
1949 * this interface. It gets called on a change by the network layer.
1950 * Return zero for success or negative posix error code.
1953 static int velocity_change_mtu(struct net_device *dev, int new_mtu)
1955 struct velocity_info *vptr = netdev_priv(dev);
1956 unsigned long flags;
1957 int oldmtu = dev->mtu;
1960 if ((new_mtu < VELOCITY_MIN_MTU) || new_mtu > (VELOCITY_MAX_MTU)) {
1961 VELOCITY_PRT(MSG_LEVEL_ERR, KERN_NOTICE "%s: Invalid MTU.\n",
1966 if (!netif_running(dev)) {
1971 if (new_mtu != oldmtu) {
1972 spin_lock_irqsave(&vptr->lock, flags);
1974 netif_stop_queue(dev);
1975 velocity_shutdown(vptr);
1977 velocity_free_td_ring(vptr);
1978 velocity_free_rd_ring(vptr);
1982 vptr->rx_buf_sz = 9 * 1024;
1983 else if (new_mtu > 4096)
1984 vptr->rx_buf_sz = 8192;
1986 vptr->rx_buf_sz = 4 * 1024;
1988 ret = velocity_init_rd_ring(vptr);
1992 ret = velocity_init_td_ring(vptr);
1996 velocity_init_registers(vptr, VELOCITY_INIT_COLD);
1998 mac_enable_int(vptr->mac_regs);
1999 netif_start_queue(dev);
2001 spin_unlock_irqrestore(&vptr->lock, flags);
2008 * velocity_shutdown - shut down the chip
2009 * @vptr: velocity to deactivate
2011 * Shuts down the internal operations of the velocity and
2012 * disables interrupts, autopolling, transmit and receive
2015 static void velocity_shutdown(struct velocity_info *vptr)
2017 struct mac_regs __iomem * regs = vptr->mac_regs;
2018 mac_disable_int(regs);
2019 writel(CR0_STOP, ®s->CR0Set);
2020 writew(0xFFFF, ®s->TDCSRClr);
2021 writeb(0xFF, ®s->RDCSRClr);
2022 safe_disable_mii_autopoll(regs);
2023 mac_clear_isr(regs);
2027 * velocity_close - close adapter callback
2028 * @dev: network device
2030 * Callback from the network layer when the velocity is being
2031 * deactivated by the network layer
2034 static int velocity_close(struct net_device *dev)
2036 struct velocity_info *vptr = netdev_priv(dev);
2038 netif_stop_queue(dev);
2039 velocity_shutdown(vptr);
2041 if (vptr->flags & VELOCITY_FLAGS_WOL_ENABLED)
2042 velocity_get_ip(vptr);
2044 free_irq(dev->irq, dev);
2046 /* Power down the chip */
2047 pci_set_power_state(vptr->pdev, PCI_D3hot);
2049 /* Free the resources */
2050 velocity_free_td_ring(vptr);
2051 velocity_free_rd_ring(vptr);
2052 velocity_free_rings(vptr);
2054 vptr->flags &= (~VELOCITY_FLAGS_OPENED);
2059 * velocity_xmit - transmit packet callback
2060 * @skb: buffer to transmit
2061 * @dev: network device
2063 * Called by the networ layer to request a packet is queued to
2064 * the velocity. Returns zero on success.
2067 static int velocity_xmit(struct sk_buff *skb, struct net_device *dev)
2069 struct velocity_info *vptr = netdev_priv(dev);
2071 struct tx_desc *td_ptr;
2072 struct velocity_td_info *tdinfo;
2073 unsigned long flags;
2076 int pktlen = skb->len;
2078 #ifdef VELOCITY_ZERO_COPY_SUPPORT
2079 if (skb_shinfo(skb)->nr_frags > 6 && __skb_linearize(skb)) {
2085 spin_lock_irqsave(&vptr->lock, flags);
2087 index = vptr->td_curr[qnum];
2088 td_ptr = &(vptr->td_rings[qnum][index]);
2089 tdinfo = &(vptr->td_infos[qnum][index]);
2091 td_ptr->tdesc1.TCPLS = TCPLS_NORMAL;
2092 td_ptr->tdesc1.TCR = TCR0_TIC;
2093 td_ptr->td_buf[0].queue = 0;
2098 if (pktlen < ETH_ZLEN) {
2099 /* Cannot occur until ZC support */
2101 skb_copy_from_linear_data(skb, tdinfo->buf, skb->len);
2102 memset(tdinfo->buf + skb->len, 0, ETH_ZLEN - skb->len);
2104 tdinfo->skb_dma[0] = tdinfo->buf_dma;
2105 td_ptr->tdesc0.pktsize = pktlen;
2106 td_ptr->td_buf[0].pa_low = cpu_to_le32(tdinfo->skb_dma[0]);
2107 td_ptr->td_buf[0].pa_high = 0;
2108 td_ptr->td_buf[0].bufsize = td_ptr->tdesc0.pktsize;
2109 tdinfo->nskb_dma = 1;
2110 td_ptr->tdesc1.CMDZ = 2;
2112 #ifdef VELOCITY_ZERO_COPY_SUPPORT
2113 if (skb_shinfo(skb)->nr_frags > 0) {
2114 int nfrags = skb_shinfo(skb)->nr_frags;
2117 skb_copy_from_linear_data(skb, tdinfo->buf, skb->len);
2118 tdinfo->skb_dma[0] = tdinfo->buf_dma;
2119 td_ptr->tdesc0.pktsize =
2120 td_ptr->td_buf[0].pa_low = cpu_to_le32(tdinfo->skb_dma[0]);
2121 td_ptr->td_buf[0].pa_high = 0;
2122 td_ptr->td_buf[0].bufsize = td_ptr->tdesc0.pktsize;
2123 tdinfo->nskb_dma = 1;
2124 td_ptr->tdesc1.CMDZ = 2;
2127 tdinfo->nskb_dma = 0;
2128 tdinfo->skb_dma[i] = pci_map_single(vptr->pdev, skb->data, skb->len - skb->data_len, PCI_DMA_TODEVICE);
2130 td_ptr->tdesc0.pktsize = pktlen;
2132 /* FIXME: support 48bit DMA later */
2133 td_ptr->td_buf[i].pa_low = cpu_to_le32(tdinfo->skb_dma);
2134 td_ptr->td_buf[i].pa_high = 0;
2135 td_ptr->td_buf[i].bufsize = skb->len->skb->data_len;
2137 for (i = 0; i < nfrags; i++) {
2138 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
2139 void *addr = ((void *) page_address(frag->page + frag->page_offset));
2141 tdinfo->skb_dma[i + 1] = pci_map_single(vptr->pdev, addr, frag->size, PCI_DMA_TODEVICE);
2143 td_ptr->td_buf[i + 1].pa_low = cpu_to_le32(tdinfo->skb_dma[i + 1]);
2144 td_ptr->td_buf[i + 1].pa_high = 0;
2145 td_ptr->td_buf[i + 1].bufsize = frag->size;
2147 tdinfo->nskb_dma = i - 1;
2148 td_ptr->tdesc1.CMDZ = i;
2155 * Map the linear network buffer into PCI space and
2156 * add it to the transmit ring.
2159 tdinfo->skb_dma[0] = pci_map_single(vptr->pdev, skb->data, pktlen, PCI_DMA_TODEVICE);
2160 td_ptr->tdesc0.pktsize = pktlen;
2161 td_ptr->td_buf[0].pa_low = cpu_to_le32(tdinfo->skb_dma[0]);
2162 td_ptr->td_buf[0].pa_high = 0;
2163 td_ptr->td_buf[0].bufsize = td_ptr->tdesc0.pktsize;
2164 tdinfo->nskb_dma = 1;
2165 td_ptr->tdesc1.CMDZ = 2;
2168 if (vptr->vlgrp && vlan_tx_tag_present(skb)) {
2169 td_ptr->tdesc1.pqinf.VID = vlan_tx_tag_get(skb);
2170 td_ptr->tdesc1.pqinf.priority = 0;
2171 td_ptr->tdesc1.pqinf.CFI = 0;
2172 td_ptr->tdesc1.TCR |= TCR0_VETAG;
2176 * Handle hardware checksum
2178 if ((vptr->flags & VELOCITY_FLAGS_TX_CSUM)
2179 && (skb->ip_summed == CHECKSUM_PARTIAL)) {
2180 const struct iphdr *ip = ip_hdr(skb);
2181 if (ip->protocol == IPPROTO_TCP)
2182 td_ptr->tdesc1.TCR |= TCR0_TCPCK;
2183 else if (ip->protocol == IPPROTO_UDP)
2184 td_ptr->tdesc1.TCR |= (TCR0_UDPCK);
2185 td_ptr->tdesc1.TCR |= TCR0_IPCK;
2189 int prev = index - 1;
2192 prev = vptr->options.numtx - 1;
2193 td_ptr->tdesc0.owner = OWNED_BY_NIC;
2194 vptr->td_used[qnum]++;
2195 vptr->td_curr[qnum] = (index + 1) % vptr->options.numtx;
2197 if (AVAIL_TD(vptr, qnum) < 1)
2198 netif_stop_queue(dev);
2200 td_ptr = &(vptr->td_rings[qnum][prev]);
2201 td_ptr->td_buf[0].queue = 1;
2202 mac_tx_queue_wake(vptr->mac_regs, qnum);
2204 dev->trans_start = jiffies;
2205 spin_unlock_irqrestore(&vptr->lock, flags);
2210 * velocity_intr - interrupt callback
2211 * @irq: interrupt number
2212 * @dev_instance: interrupting device
2214 * Called whenever an interrupt is generated by the velocity
2215 * adapter IRQ line. We may not be the source of the interrupt
2216 * and need to identify initially if we are, and if not exit as
2217 * efficiently as possible.
2220 static int velocity_intr(int irq, void *dev_instance)
2222 struct net_device *dev = dev_instance;
2223 struct velocity_info *vptr = netdev_priv(dev);
2228 spin_lock(&vptr->lock);
2229 isr_status = mac_read_isr(vptr->mac_regs);
2232 if (isr_status == 0) {
2233 spin_unlock(&vptr->lock);
2237 mac_disable_int(vptr->mac_regs);
2240 * Keep processing the ISR until we have completed
2241 * processing and the isr_status becomes zero
2244 while (isr_status != 0) {
2245 mac_write_isr(vptr->mac_regs, isr_status);
2246 if (isr_status & (~(ISR_PRXI | ISR_PPRXI | ISR_PTXI | ISR_PPTXI)))
2247 velocity_error(vptr, isr_status);
2248 if (isr_status & (ISR_PRXI | ISR_PPRXI))
2249 max_count += velocity_rx_srv(vptr, isr_status);
2250 if (isr_status & (ISR_PTXI | ISR_PPTXI))
2251 max_count += velocity_tx_srv(vptr, isr_status);
2252 isr_status = mac_read_isr(vptr->mac_regs);
2253 if (max_count > vptr->options.int_works)
2255 printk(KERN_WARNING "%s: excessive work at interrupt.\n",
2260 spin_unlock(&vptr->lock);
2261 mac_enable_int(vptr->mac_regs);
2268 * velocity_set_multi - filter list change callback
2269 * @dev: network device
2271 * Called by the network layer when the filter lists need to change
2272 * for a velocity adapter. Reload the CAMs with the new address
2276 static void velocity_set_multi(struct net_device *dev)
2278 struct velocity_info *vptr = netdev_priv(dev);
2279 struct mac_regs __iomem * regs = vptr->mac_regs;
2282 struct dev_mc_list *mclist;
2284 if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */
2285 writel(0xffffffff, ®s->MARCAM[0]);
2286 writel(0xffffffff, ®s->MARCAM[4]);
2287 rx_mode = (RCR_AM | RCR_AB | RCR_PROM);
2288 } else if ((dev->mc_count > vptr->multicast_limit)
2289 || (dev->flags & IFF_ALLMULTI)) {
2290 writel(0xffffffff, ®s->MARCAM[0]);
2291 writel(0xffffffff, ®s->MARCAM[4]);
2292 rx_mode = (RCR_AM | RCR_AB);
2294 int offset = MCAM_SIZE - vptr->multicast_limit;
2295 mac_get_cam_mask(regs, vptr->mCAMmask);
2297 for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count; i++, mclist = mclist->next) {
2298 mac_set_cam(regs, i + offset, mclist->dmi_addr);
2299 vptr->mCAMmask[(offset + i) / 8] |= 1 << ((offset + i) & 7);
2302 mac_set_cam_mask(regs, vptr->mCAMmask);
2303 rx_mode = (RCR_AM | RCR_AB);
2305 if (dev->mtu > 1500)
2308 BYTE_REG_BITS_ON(rx_mode, ®s->RCR);
2313 * velocity_get_status - statistics callback
2314 * @dev: network device
2316 * Callback from the network layer to allow driver statistics
2317 * to be resynchronized with hardware collected state. In the
2318 * case of the velocity we need to pull the MIB counters from
2319 * the hardware into the counters before letting the network
2320 * layer display them.
2323 static struct net_device_stats *velocity_get_stats(struct net_device *dev)
2325 struct velocity_info *vptr = netdev_priv(dev);
2327 /* If the hardware is down, don't touch MII */
2328 if(!netif_running(dev))
2329 return &vptr->stats;
2331 spin_lock_irq(&vptr->lock);
2332 velocity_update_hw_mibs(vptr);
2333 spin_unlock_irq(&vptr->lock);
2335 vptr->stats.rx_packets = vptr->mib_counter[HW_MIB_ifRxAllPkts];
2336 vptr->stats.rx_errors = vptr->mib_counter[HW_MIB_ifRxErrorPkts];
2337 vptr->stats.rx_length_errors = vptr->mib_counter[HW_MIB_ifInRangeLengthErrors];
2339 // unsigned long rx_dropped; /* no space in linux buffers */
2340 vptr->stats.collisions = vptr->mib_counter[HW_MIB_ifTxEtherCollisions];
2341 /* detailed rx_errors: */
2342 // unsigned long rx_length_errors;
2343 // unsigned long rx_over_errors; /* receiver ring buff overflow */
2344 vptr->stats.rx_crc_errors = vptr->mib_counter[HW_MIB_ifRxPktCRCE];
2345 // unsigned long rx_frame_errors; /* recv'd frame alignment error */
2346 // unsigned long rx_fifo_errors; /* recv'r fifo overrun */
2347 // unsigned long rx_missed_errors; /* receiver missed packet */
2349 /* detailed tx_errors */
2350 // unsigned long tx_fifo_errors;
2352 return &vptr->stats;
2357 * velocity_ioctl - ioctl entry point
2358 * @dev: network device
2359 * @rq: interface request ioctl
2360 * @cmd: command code
2362 * Called when the user issues an ioctl request to the network
2363 * device in question. The velocity interface supports MII.
2366 static int velocity_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2368 struct velocity_info *vptr = netdev_priv(dev);
2371 /* If we are asked for information and the device is power
2372 saving then we need to bring the device back up to talk to it */
2374 if (!netif_running(dev))
2375 pci_set_power_state(vptr->pdev, PCI_D0);
2378 case SIOCGMIIPHY: /* Get address of MII PHY in use. */
2379 case SIOCGMIIREG: /* Read MII PHY register. */
2380 case SIOCSMIIREG: /* Write to MII PHY register. */
2381 ret = velocity_mii_ioctl(dev, rq, cmd);
2387 if (!netif_running(dev))
2388 pci_set_power_state(vptr->pdev, PCI_D3hot);
2395 * Definition for our device driver. The PCI layer interface
2396 * uses this to handle all our card discover and plugging
2399 static struct pci_driver velocity_driver = {
2400 .name = VELOCITY_NAME,
2401 .id_table = velocity_id_table,
2402 .probe = velocity_found1,
2403 .remove = __devexit_p(velocity_remove1),
2405 .suspend = velocity_suspend,
2406 .resume = velocity_resume,
2411 * velocity_init_module - load time function
2413 * Called when the velocity module is loaded. The PCI driver
2414 * is registered with the PCI layer, and in turn will call
2415 * the probe functions for each velocity adapter installed
2419 static int __init velocity_init_module(void)
2423 velocity_register_notifier();
2424 ret = pci_register_driver(&velocity_driver);
2426 velocity_unregister_notifier();
2431 * velocity_cleanup - module unload
2433 * When the velocity hardware is unloaded this function is called.
2434 * It will clean up the notifiers and the unregister the PCI
2435 * driver interface for this hardware. This in turn cleans up
2436 * all discovered interfaces before returning from the function
2439 static void __exit velocity_cleanup_module(void)
2441 velocity_unregister_notifier();
2442 pci_unregister_driver(&velocity_driver);
2445 module_init(velocity_init_module);
2446 module_exit(velocity_cleanup_module);
2450 * MII access , media link mode setting functions
2455 * mii_init - set up MII
2456 * @vptr: velocity adapter
2457 * @mii_status: links tatus
2459 * Set up the PHY for the current link state.
2462 static void mii_init(struct velocity_info *vptr, u32 mii_status)
2466 switch (PHYID_GET_PHY_ID(vptr->phy_id)) {
2467 case PHYID_CICADA_CS8201:
2469 * Reset to hardware default
2471 MII_REG_BITS_OFF((ANAR_ASMDIR | ANAR_PAUSE), MII_REG_ANAR, vptr->mac_regs);
2473 * Turn on ECHODIS bit in NWay-forced full mode and turn it
2474 * off it in NWay-forced half mode for NWay-forced v.s.
2475 * legacy-forced issue.
2477 if (vptr->mii_status & VELOCITY_DUPLEX_FULL)
2478 MII_REG_BITS_ON(TCSR_ECHODIS, MII_REG_TCSR, vptr->mac_regs);
2480 MII_REG_BITS_OFF(TCSR_ECHODIS, MII_REG_TCSR, vptr->mac_regs);
2482 * Turn on Link/Activity LED enable bit for CIS8201
2484 MII_REG_BITS_ON(PLED_LALBE, MII_REG_PLED, vptr->mac_regs);
2486 case PHYID_VT3216_32BIT:
2487 case PHYID_VT3216_64BIT:
2489 * Reset to hardware default
2491 MII_REG_BITS_ON((ANAR_ASMDIR | ANAR_PAUSE), MII_REG_ANAR, vptr->mac_regs);
2493 * Turn on ECHODIS bit in NWay-forced full mode and turn it
2494 * off it in NWay-forced half mode for NWay-forced v.s.
2495 * legacy-forced issue
2497 if (vptr->mii_status & VELOCITY_DUPLEX_FULL)
2498 MII_REG_BITS_ON(TCSR_ECHODIS, MII_REG_TCSR, vptr->mac_regs);
2500 MII_REG_BITS_OFF(TCSR_ECHODIS, MII_REG_TCSR, vptr->mac_regs);
2503 case PHYID_MARVELL_1000:
2504 case PHYID_MARVELL_1000S:
2506 * Assert CRS on Transmit
2508 MII_REG_BITS_ON(PSCR_ACRSTX, MII_REG_PSCR, vptr->mac_regs);
2510 * Reset to hardware default
2512 MII_REG_BITS_ON((ANAR_ASMDIR | ANAR_PAUSE), MII_REG_ANAR, vptr->mac_regs);
2517 velocity_mii_read(vptr->mac_regs, MII_REG_BMCR, &BMCR);
2518 if (BMCR & BMCR_ISO) {
2520 velocity_mii_write(vptr->mac_regs, MII_REG_BMCR, BMCR);
2525 * safe_disable_mii_autopoll - autopoll off
2526 * @regs: velocity registers
2528 * Turn off the autopoll and wait for it to disable on the chip
2531 static void safe_disable_mii_autopoll(struct mac_regs __iomem * regs)
2535 /* turn off MAUTO */
2536 writeb(0, ®s->MIICR);
2537 for (ww = 0; ww < W_MAX_TIMEOUT; ww++) {
2539 if (BYTE_REG_BITS_IS_ON(MIISR_MIDLE, ®s->MIISR))
2545 * enable_mii_autopoll - turn on autopolling
2546 * @regs: velocity registers
2548 * Enable the MII link status autopoll feature on the Velocity
2549 * hardware. Wait for it to enable.
2552 static void enable_mii_autopoll(struct mac_regs __iomem * regs)
2556 writeb(0, &(regs->MIICR));
2557 writeb(MIIADR_SWMPL, ®s->MIIADR);
2559 for (ii = 0; ii < W_MAX_TIMEOUT; ii++) {
2561 if (BYTE_REG_BITS_IS_ON(MIISR_MIDLE, ®s->MIISR))
2565 writeb(MIICR_MAUTO, ®s->MIICR);
2567 for (ii = 0; ii < W_MAX_TIMEOUT; ii++) {
2569 if (!BYTE_REG_BITS_IS_ON(MIISR_MIDLE, ®s->MIISR))
2576 * velocity_mii_read - read MII data
2577 * @regs: velocity registers
2578 * @index: MII register index
2579 * @data: buffer for received data
2581 * Perform a single read of an MII 16bit register. Returns zero
2582 * on success or -ETIMEDOUT if the PHY did not respond.
2585 static int velocity_mii_read(struct mac_regs __iomem *regs, u8 index, u16 *data)
2590 * Disable MIICR_MAUTO, so that mii addr can be set normally
2592 safe_disable_mii_autopoll(regs);
2594 writeb(index, ®s->MIIADR);
2596 BYTE_REG_BITS_ON(MIICR_RCMD, ®s->MIICR);
2598 for (ww = 0; ww < W_MAX_TIMEOUT; ww++) {
2599 if (!(readb(®s->MIICR) & MIICR_RCMD))
2603 *data = readw(®s->MIIDATA);
2605 enable_mii_autopoll(regs);
2606 if (ww == W_MAX_TIMEOUT)
2612 * velocity_mii_write - write MII data
2613 * @regs: velocity registers
2614 * @index: MII register index
2615 * @data: 16bit data for the MII register
2617 * Perform a single write to an MII 16bit register. Returns zero
2618 * on success or -ETIMEDOUT if the PHY did not respond.
2621 static int velocity_mii_write(struct mac_regs __iomem *regs, u8 mii_addr, u16 data)
2626 * Disable MIICR_MAUTO, so that mii addr can be set normally
2628 safe_disable_mii_autopoll(regs);
2630 /* MII reg offset */
2631 writeb(mii_addr, ®s->MIIADR);
2633 writew(data, ®s->MIIDATA);
2635 /* turn on MIICR_WCMD */
2636 BYTE_REG_BITS_ON(MIICR_WCMD, ®s->MIICR);
2638 /* W_MAX_TIMEOUT is the timeout period */
2639 for (ww = 0; ww < W_MAX_TIMEOUT; ww++) {
2641 if (!(readb(®s->MIICR) & MIICR_WCMD))
2644 enable_mii_autopoll(regs);
2646 if (ww == W_MAX_TIMEOUT)
2652 * velocity_get_opt_media_mode - get media selection
2653 * @vptr: velocity adapter
2655 * Get the media mode stored in EEPROM or module options and load
2656 * mii_status accordingly. The requested link state information
2660 static u32 velocity_get_opt_media_mode(struct velocity_info *vptr)
2664 switch (vptr->options.spd_dpx) {
2666 status = VELOCITY_AUTONEG_ENABLE;
2668 case SPD_DPX_100_FULL:
2669 status = VELOCITY_SPEED_100 | VELOCITY_DUPLEX_FULL;
2671 case SPD_DPX_10_FULL:
2672 status = VELOCITY_SPEED_10 | VELOCITY_DUPLEX_FULL;
2674 case SPD_DPX_100_HALF:
2675 status = VELOCITY_SPEED_100;
2677 case SPD_DPX_10_HALF:
2678 status = VELOCITY_SPEED_10;
2681 vptr->mii_status = status;
2686 * mii_set_auto_on - autonegotiate on
2689 * Enable autonegotation on this interface
2692 static void mii_set_auto_on(struct velocity_info *vptr)
2694 if (MII_REG_BITS_IS_ON(BMCR_AUTO, MII_REG_BMCR, vptr->mac_regs))
2695 MII_REG_BITS_ON(BMCR_REAUTO, MII_REG_BMCR, vptr->mac_regs);
2697 MII_REG_BITS_ON(BMCR_AUTO, MII_REG_BMCR, vptr->mac_regs);
2702 static void mii_set_auto_off(struct velocity_info * vptr)
2704 MII_REG_BITS_OFF(BMCR_AUTO, MII_REG_BMCR, vptr->mac_regs);
2709 * set_mii_flow_control - flow control setup
2710 * @vptr: velocity interface
2712 * Set up the flow control on this interface according to
2713 * the supplied user/eeprom options.
2716 static void set_mii_flow_control(struct velocity_info *vptr)
2718 /*Enable or Disable PAUSE in ANAR */
2719 switch (vptr->options.flow_cntl) {
2721 MII_REG_BITS_OFF(ANAR_PAUSE, MII_REG_ANAR, vptr->mac_regs);
2722 MII_REG_BITS_ON(ANAR_ASMDIR, MII_REG_ANAR, vptr->mac_regs);
2726 MII_REG_BITS_ON(ANAR_PAUSE, MII_REG_ANAR, vptr->mac_regs);
2727 MII_REG_BITS_ON(ANAR_ASMDIR, MII_REG_ANAR, vptr->mac_regs);
2730 case FLOW_CNTL_TX_RX:
2731 MII_REG_BITS_ON(ANAR_PAUSE, MII_REG_ANAR, vptr->mac_regs);
2732 MII_REG_BITS_ON(ANAR_ASMDIR, MII_REG_ANAR, vptr->mac_regs);
2735 case FLOW_CNTL_DISABLE:
2736 MII_REG_BITS_OFF(ANAR_PAUSE, MII_REG_ANAR, vptr->mac_regs);
2737 MII_REG_BITS_OFF(ANAR_ASMDIR, MII_REG_ANAR, vptr->mac_regs);
2745 * velocity_set_media_mode - set media mode
2746 * @mii_status: old MII link state
2748 * Check the media link state and configure the flow control
2749 * PHY and also velocity hardware setup accordingly. In particular
2750 * we need to set up CD polling and frame bursting.
2753 static int velocity_set_media_mode(struct velocity_info *vptr, u32 mii_status)
2756 struct mac_regs __iomem * regs = vptr->mac_regs;
2758 vptr->mii_status = mii_check_media_mode(vptr->mac_regs);
2759 curr_status = vptr->mii_status & (~VELOCITY_LINK_FAIL);
2761 /* Set mii link status */
2762 set_mii_flow_control(vptr);
2765 Check if new status is consisent with current status
2766 if (((mii_status & curr_status) & VELOCITY_AUTONEG_ENABLE)
2767 || (mii_status==curr_status)) {
2768 vptr->mii_status=mii_check_media_mode(vptr->mac_regs);
2769 vptr->mii_status=check_connection_type(vptr->mac_regs);
2770 VELOCITY_PRT(MSG_LEVEL_INFO, "Velocity link no change\n");
2775 if (PHYID_GET_PHY_ID(vptr->phy_id) == PHYID_CICADA_CS8201) {
2776 MII_REG_BITS_ON(AUXCR_MDPPS, MII_REG_AUXCR, vptr->mac_regs);
2780 * If connection type is AUTO
2782 if (mii_status & VELOCITY_AUTONEG_ENABLE) {
2783 VELOCITY_PRT(MSG_LEVEL_INFO, "Velocity is AUTO mode\n");
2784 /* clear force MAC mode bit */
2785 BYTE_REG_BITS_OFF(CHIPGCR_FCMODE, ®s->CHIPGCR);
2786 /* set duplex mode of MAC according to duplex mode of MII */
2787 MII_REG_BITS_ON(ANAR_TXFD | ANAR_TX | ANAR_10FD | ANAR_10, MII_REG_ANAR, vptr->mac_regs);
2788 MII_REG_BITS_ON(G1000CR_1000FD | G1000CR_1000, MII_REG_G1000CR, vptr->mac_regs);
2789 MII_REG_BITS_ON(BMCR_SPEED1G, MII_REG_BMCR, vptr->mac_regs);
2791 /* enable AUTO-NEGO mode */
2792 mii_set_auto_on(vptr);
2798 * 1. if it's 3119, disable frame bursting in halfduplex mode
2799 * and enable it in fullduplex mode
2800 * 2. set correct MII/GMII and half/full duplex mode in CHIPGCR
2801 * 3. only enable CD heart beat counter in 10HD mode
2804 /* set force MAC mode bit */
2805 BYTE_REG_BITS_ON(CHIPGCR_FCMODE, ®s->CHIPGCR);
2807 CHIPGCR = readb(®s->CHIPGCR);
2808 CHIPGCR &= ~CHIPGCR_FCGMII;
2810 if (mii_status & VELOCITY_DUPLEX_FULL) {
2811 CHIPGCR |= CHIPGCR_FCFDX;
2812 writeb(CHIPGCR, ®s->CHIPGCR);
2813 VELOCITY_PRT(MSG_LEVEL_INFO, "set Velocity to forced full mode\n");
2814 if (vptr->rev_id < REV_ID_VT3216_A0)
2815 BYTE_REG_BITS_OFF(TCR_TB2BDIS, ®s->TCR);
2817 CHIPGCR &= ~CHIPGCR_FCFDX;
2818 VELOCITY_PRT(MSG_LEVEL_INFO, "set Velocity to forced half mode\n");
2819 writeb(CHIPGCR, ®s->CHIPGCR);
2820 if (vptr->rev_id < REV_ID_VT3216_A0)
2821 BYTE_REG_BITS_ON(TCR_TB2BDIS, ®s->TCR);
2824 MII_REG_BITS_OFF(G1000CR_1000FD | G1000CR_1000, MII_REG_G1000CR, vptr->mac_regs);
2826 if (!(mii_status & VELOCITY_DUPLEX_FULL) && (mii_status & VELOCITY_SPEED_10)) {
2827 BYTE_REG_BITS_OFF(TESTCFG_HBDIS, ®s->TESTCFG);
2829 BYTE_REG_BITS_ON(TESTCFG_HBDIS, ®s->TESTCFG);
2831 /* MII_REG_BITS_OFF(BMCR_SPEED1G, MII_REG_BMCR, vptr->mac_regs); */
2832 velocity_mii_read(vptr->mac_regs, MII_REG_ANAR, &ANAR);
2833 ANAR &= (~(ANAR_TXFD | ANAR_TX | ANAR_10FD | ANAR_10));
2834 if (mii_status & VELOCITY_SPEED_100) {
2835 if (mii_status & VELOCITY_DUPLEX_FULL)
2840 if (mii_status & VELOCITY_DUPLEX_FULL)
2845 velocity_mii_write(vptr->mac_regs, MII_REG_ANAR, ANAR);
2846 /* enable AUTO-NEGO mode */
2847 mii_set_auto_on(vptr);
2848 /* MII_REG_BITS_ON(BMCR_AUTO, MII_REG_BMCR, vptr->mac_regs); */
2850 /* vptr->mii_status=mii_check_media_mode(vptr->mac_regs); */
2851 /* vptr->mii_status=check_connection_type(vptr->mac_regs); */
2852 return VELOCITY_LINK_CHANGE;
2856 * mii_check_media_mode - check media state
2857 * @regs: velocity registers
2859 * Check the current MII status and determine the link status
2863 static u32 mii_check_media_mode(struct mac_regs __iomem * regs)
2868 if (!MII_REG_BITS_IS_ON(BMSR_LNK, MII_REG_BMSR, regs))
2869 status |= VELOCITY_LINK_FAIL;
2871 if (MII_REG_BITS_IS_ON(G1000CR_1000FD, MII_REG_G1000CR, regs))
2872 status |= VELOCITY_SPEED_1000 | VELOCITY_DUPLEX_FULL;
2873 else if (MII_REG_BITS_IS_ON(G1000CR_1000, MII_REG_G1000CR, regs))
2874 status |= (VELOCITY_SPEED_1000);
2876 velocity_mii_read(regs, MII_REG_ANAR, &ANAR);
2877 if (ANAR & ANAR_TXFD)
2878 status |= (VELOCITY_SPEED_100 | VELOCITY_DUPLEX_FULL);
2879 else if (ANAR & ANAR_TX)
2880 status |= VELOCITY_SPEED_100;
2881 else if (ANAR & ANAR_10FD)
2882 status |= (VELOCITY_SPEED_10 | VELOCITY_DUPLEX_FULL);
2884 status |= (VELOCITY_SPEED_10);
2887 if (MII_REG_BITS_IS_ON(BMCR_AUTO, MII_REG_BMCR, regs)) {
2888 velocity_mii_read(regs, MII_REG_ANAR, &ANAR);
2889 if ((ANAR & (ANAR_TXFD | ANAR_TX | ANAR_10FD | ANAR_10))
2890 == (ANAR_TXFD | ANAR_TX | ANAR_10FD | ANAR_10)) {
2891 if (MII_REG_BITS_IS_ON(G1000CR_1000 | G1000CR_1000FD, MII_REG_G1000CR, regs))
2892 status |= VELOCITY_AUTONEG_ENABLE;
2899 static u32 check_connection_type(struct mac_regs __iomem * regs)
2904 PHYSR0 = readb(®s->PHYSR0);
2907 if (!(PHYSR0 & PHYSR0_LINKGD))
2908 status|=VELOCITY_LINK_FAIL;
2911 if (PHYSR0 & PHYSR0_FDPX)
2912 status |= VELOCITY_DUPLEX_FULL;
2914 if (PHYSR0 & PHYSR0_SPDG)
2915 status |= VELOCITY_SPEED_1000;
2916 else if (PHYSR0 & PHYSR0_SPD10)
2917 status |= VELOCITY_SPEED_10;
2919 status |= VELOCITY_SPEED_100;
2921 if (MII_REG_BITS_IS_ON(BMCR_AUTO, MII_REG_BMCR, regs)) {
2922 velocity_mii_read(regs, MII_REG_ANAR, &ANAR);
2923 if ((ANAR & (ANAR_TXFD | ANAR_TX | ANAR_10FD | ANAR_10))
2924 == (ANAR_TXFD | ANAR_TX | ANAR_10FD | ANAR_10)) {
2925 if (MII_REG_BITS_IS_ON(G1000CR_1000 | G1000CR_1000FD, MII_REG_G1000CR, regs))
2926 status |= VELOCITY_AUTONEG_ENABLE;
2934 * enable_flow_control_ability - flow control
2935 * @vptr: veloity to configure
2937 * Set up flow control according to the flow control options
2938 * determined by the eeprom/configuration.
2941 static void enable_flow_control_ability(struct velocity_info *vptr)
2944 struct mac_regs __iomem * regs = vptr->mac_regs;
2946 switch (vptr->options.flow_cntl) {
2948 case FLOW_CNTL_DEFAULT:
2949 if (BYTE_REG_BITS_IS_ON(PHYSR0_RXFLC, ®s->PHYSR0))
2950 writel(CR0_FDXRFCEN, ®s->CR0Set);
2952 writel(CR0_FDXRFCEN, ®s->CR0Clr);
2954 if (BYTE_REG_BITS_IS_ON(PHYSR0_TXFLC, ®s->PHYSR0))
2955 writel(CR0_FDXTFCEN, ®s->CR0Set);
2957 writel(CR0_FDXTFCEN, ®s->CR0Clr);
2961 writel(CR0_FDXTFCEN, ®s->CR0Set);
2962 writel(CR0_FDXRFCEN, ®s->CR0Clr);
2966 writel(CR0_FDXRFCEN, ®s->CR0Set);
2967 writel(CR0_FDXTFCEN, ®s->CR0Clr);
2970 case FLOW_CNTL_TX_RX:
2971 writel(CR0_FDXTFCEN, ®s->CR0Set);
2972 writel(CR0_FDXRFCEN, ®s->CR0Set);
2975 case FLOW_CNTL_DISABLE:
2976 writel(CR0_FDXRFCEN, ®s->CR0Clr);
2977 writel(CR0_FDXTFCEN, ®s->CR0Clr);
2988 * velocity_ethtool_up - pre hook for ethtool
2989 * @dev: network device
2991 * Called before an ethtool operation. We need to make sure the
2992 * chip is out of D3 state before we poke at it.
2995 static int velocity_ethtool_up(struct net_device *dev)
2997 struct velocity_info *vptr = netdev_priv(dev);
2998 if (!netif_running(dev))
2999 pci_set_power_state(vptr->pdev, PCI_D0);
3004 * velocity_ethtool_down - post hook for ethtool
3005 * @dev: network device
3007 * Called after an ethtool operation. Restore the chip back to D3
3008 * state if it isn't running.
3011 static void velocity_ethtool_down(struct net_device *dev)
3013 struct velocity_info *vptr = netdev_priv(dev);
3014 if (!netif_running(dev))
3015 pci_set_power_state(vptr->pdev, PCI_D3hot);
3018 static int velocity_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
3020 struct velocity_info *vptr = netdev_priv(dev);
3021 struct mac_regs __iomem * regs = vptr->mac_regs;
3023 status = check_connection_type(vptr->mac_regs);
3025 cmd->supported = SUPPORTED_TP |
3027 SUPPORTED_10baseT_Half |
3028 SUPPORTED_10baseT_Full |
3029 SUPPORTED_100baseT_Half |
3030 SUPPORTED_100baseT_Full |
3031 SUPPORTED_1000baseT_Half |
3032 SUPPORTED_1000baseT_Full;
3033 if (status & VELOCITY_SPEED_1000)
3034 cmd->speed = SPEED_1000;
3035 else if (status & VELOCITY_SPEED_100)
3036 cmd->speed = SPEED_100;
3038 cmd->speed = SPEED_10;
3039 cmd->autoneg = (status & VELOCITY_AUTONEG_ENABLE) ? AUTONEG_ENABLE : AUTONEG_DISABLE;
3040 cmd->port = PORT_TP;
3041 cmd->transceiver = XCVR_INTERNAL;
3042 cmd->phy_address = readb(®s->MIIADR) & 0x1F;
3044 if (status & VELOCITY_DUPLEX_FULL)
3045 cmd->duplex = DUPLEX_FULL;
3047 cmd->duplex = DUPLEX_HALF;
3052 static int velocity_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
3054 struct velocity_info *vptr = netdev_priv(dev);
3059 curr_status = check_connection_type(vptr->mac_regs);
3060 curr_status &= (~VELOCITY_LINK_FAIL);
3062 new_status |= ((cmd->autoneg) ? VELOCITY_AUTONEG_ENABLE : 0);
3063 new_status |= ((cmd->speed == SPEED_100) ? VELOCITY_SPEED_100 : 0);
3064 new_status |= ((cmd->speed == SPEED_10) ? VELOCITY_SPEED_10 : 0);
3065 new_status |= ((cmd->duplex == DUPLEX_FULL) ? VELOCITY_DUPLEX_FULL : 0);
3067 if ((new_status & VELOCITY_AUTONEG_ENABLE) && (new_status != (curr_status | VELOCITY_AUTONEG_ENABLE)))
3070 velocity_set_media_mode(vptr, new_status);
3075 static u32 velocity_get_link(struct net_device *dev)
3077 struct velocity_info *vptr = netdev_priv(dev);
3078 struct mac_regs __iomem * regs = vptr->mac_regs;
3079 return BYTE_REG_BITS_IS_ON(PHYSR0_LINKGD, ®s->PHYSR0) ? 1 : 0;
3082 static void velocity_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
3084 struct velocity_info *vptr = netdev_priv(dev);
3085 strcpy(info->driver, VELOCITY_NAME);
3086 strcpy(info->version, VELOCITY_VERSION);
3087 strcpy(info->bus_info, pci_name(vptr->pdev));
3090 static void velocity_ethtool_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
3092 struct velocity_info *vptr = netdev_priv(dev);
3093 wol->supported = WAKE_PHY | WAKE_MAGIC | WAKE_UCAST | WAKE_ARP;
3094 wol->wolopts |= WAKE_MAGIC;
3096 if (vptr->wol_opts & VELOCITY_WOL_PHY)
3097 wol.wolopts|=WAKE_PHY;
3099 if (vptr->wol_opts & VELOCITY_WOL_UCAST)
3100 wol->wolopts |= WAKE_UCAST;
3101 if (vptr->wol_opts & VELOCITY_WOL_ARP)
3102 wol->wolopts |= WAKE_ARP;
3103 memcpy(&wol->sopass, vptr->wol_passwd, 6);
3106 static int velocity_ethtool_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
3108 struct velocity_info *vptr = netdev_priv(dev);
3110 if (!(wol->wolopts & (WAKE_PHY | WAKE_MAGIC | WAKE_UCAST | WAKE_ARP)))
3112 vptr->wol_opts = VELOCITY_WOL_MAGIC;
3115 if (wol.wolopts & WAKE_PHY) {
3116 vptr->wol_opts|=VELOCITY_WOL_PHY;
3117 vptr->flags |=VELOCITY_FLAGS_WOL_ENABLED;
3121 if (wol->wolopts & WAKE_MAGIC) {
3122 vptr->wol_opts |= VELOCITY_WOL_MAGIC;
3123 vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
3125 if (wol->wolopts & WAKE_UCAST) {
3126 vptr->wol_opts |= VELOCITY_WOL_UCAST;
3127 vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
3129 if (wol->wolopts & WAKE_ARP) {
3130 vptr->wol_opts |= VELOCITY_WOL_ARP;
3131 vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
3133 memcpy(vptr->wol_passwd, wol->sopass, 6);
3137 static u32 velocity_get_msglevel(struct net_device *dev)
3142 static void velocity_set_msglevel(struct net_device *dev, u32 value)
3147 static const struct ethtool_ops velocity_ethtool_ops = {
3148 .get_settings = velocity_get_settings,
3149 .set_settings = velocity_set_settings,
3150 .get_drvinfo = velocity_get_drvinfo,
3151 .get_wol = velocity_ethtool_get_wol,
3152 .set_wol = velocity_ethtool_set_wol,
3153 .get_msglevel = velocity_get_msglevel,
3154 .set_msglevel = velocity_set_msglevel,
3155 .get_link = velocity_get_link,
3156 .begin = velocity_ethtool_up,
3157 .complete = velocity_ethtool_down
3161 * velocity_mii_ioctl - MII ioctl handler
3162 * @dev: network device
3163 * @ifr: the ifreq block for the ioctl
3166 * Process MII requests made via ioctl from the network layer. These
3167 * are used by tools like kudzu to interrogate the link state of the
3171 static int velocity_mii_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
3173 struct velocity_info *vptr = netdev_priv(dev);
3174 struct mac_regs __iomem * regs = vptr->mac_regs;
3175 unsigned long flags;
3176 struct mii_ioctl_data *miidata = if_mii(ifr);
3181 miidata->phy_id = readb(®s->MIIADR) & 0x1f;
3184 if (!capable(CAP_NET_ADMIN))
3186 if(velocity_mii_read(vptr->mac_regs, miidata->reg_num & 0x1f, &(miidata->val_out)) < 0)
3190 if (!capable(CAP_NET_ADMIN))
3192 spin_lock_irqsave(&vptr->lock, flags);
3193 err = velocity_mii_write(vptr->mac_regs, miidata->reg_num & 0x1f, miidata->val_in);
3194 spin_unlock_irqrestore(&vptr->lock, flags);
3195 check_connection_type(vptr->mac_regs);
3208 * velocity_save_context - save registers
3210 * @context: buffer for stored context
3212 * Retrieve the current configuration from the velocity hardware
3213 * and stash it in the context structure, for use by the context
3214 * restore functions. This allows us to save things we need across
3218 static void velocity_save_context(struct velocity_info *vptr, struct velocity_context * context)
3220 struct mac_regs __iomem * regs = vptr->mac_regs;
3222 u8 __iomem *ptr = (u8 __iomem *)regs;
3224 for (i = MAC_REG_PAR; i < MAC_REG_CR0_CLR; i += 4)
3225 *((u32 *) (context->mac_reg + i)) = readl(ptr + i);
3227 for (i = MAC_REG_MAR; i < MAC_REG_TDCSR_CLR; i += 4)
3228 *((u32 *) (context->mac_reg + i)) = readl(ptr + i);
3230 for (i = MAC_REG_RDBASE_LO; i < MAC_REG_FIFO_TEST0; i += 4)
3231 *((u32 *) (context->mac_reg + i)) = readl(ptr + i);
3236 * velocity_restore_context - restore registers
3238 * @context: buffer for stored context
3240 * Reload the register configuration from the velocity context
3241 * created by velocity_save_context.
3244 static void velocity_restore_context(struct velocity_info *vptr, struct velocity_context *context)
3246 struct mac_regs __iomem * regs = vptr->mac_regs;
3248 u8 __iomem *ptr = (u8 __iomem *)regs;
3250 for (i = MAC_REG_PAR; i < MAC_REG_CR0_SET; i += 4) {
3251 writel(*((u32 *) (context->mac_reg + i)), ptr + i);
3255 for (i = MAC_REG_CR1_SET; i < MAC_REG_CR0_CLR; i++) {
3257 writeb(~(*((u8 *) (context->mac_reg + i))), ptr + i + 4);
3259 writeb(*((u8 *) (context->mac_reg + i)), ptr + i);
3262 for (i = MAC_REG_MAR; i < MAC_REG_IMR; i += 4) {
3263 writel(*((u32 *) (context->mac_reg + i)), ptr + i);
3266 for (i = MAC_REG_RDBASE_LO; i < MAC_REG_FIFO_TEST0; i += 4) {
3267 writel(*((u32 *) (context->mac_reg + i)), ptr + i);
3270 for (i = MAC_REG_TDCSR_SET; i <= MAC_REG_RDCSR_SET; i++) {
3271 writeb(*((u8 *) (context->mac_reg + i)), ptr + i);
3277 * wol_calc_crc - WOL CRC
3278 * @pattern: data pattern
3279 * @mask_pattern: mask
3281 * Compute the wake on lan crc hashes for the packet header
3282 * we are interested in.
3285 static u16 wol_calc_crc(int size, u8 * pattern, u8 *mask_pattern)
3291 for (i = 0; i < size; i++) {
3292 mask = mask_pattern[i];
3294 /* Skip this loop if the mask equals to zero */
3298 for (j = 0; j < 8; j++) {
3299 if ((mask & 0x01) == 0) {
3304 crc = crc_ccitt(crc, &(pattern[i * 8 + j]), 1);
3307 /* Finally, invert the result once to get the correct data */
3309 return bitrev32(crc) >> 16;
3313 * velocity_set_wol - set up for wake on lan
3314 * @vptr: velocity to set WOL status on
3316 * Set a card up for wake on lan either by unicast or by
3319 * FIXME: check static buffer is safe here
3322 static int velocity_set_wol(struct velocity_info *vptr)
3324 struct mac_regs __iomem * regs = vptr->mac_regs;
3328 static u32 mask_pattern[2][4] = {
3329 {0x00203000, 0x000003C0, 0x00000000, 0x0000000}, /* ARP */
3330 {0xfffff000, 0xffffffff, 0xffffffff, 0x000ffff} /* Magic Packet */
3333 writew(0xFFFF, ®s->WOLCRClr);
3334 writeb(WOLCFG_SAB | WOLCFG_SAM, ®s->WOLCFGSet);
3335 writew(WOLCR_MAGIC_EN, ®s->WOLCRSet);
3338 if (vptr->wol_opts & VELOCITY_WOL_PHY)
3339 writew((WOLCR_LINKON_EN|WOLCR_LINKOFF_EN), ®s->WOLCRSet);
3342 if (vptr->wol_opts & VELOCITY_WOL_UCAST) {
3343 writew(WOLCR_UNICAST_EN, ®s->WOLCRSet);
3346 if (vptr->wol_opts & VELOCITY_WOL_ARP) {
3347 struct arp_packet *arp = (struct arp_packet *) buf;
3349 memset(buf, 0, sizeof(struct arp_packet) + 7);
3351 for (i = 0; i < 4; i++)
3352 writel(mask_pattern[0][i], ®s->ByteMask[0][i]);
3354 arp->type = htons(ETH_P_ARP);
3355 arp->ar_op = htons(1);
3357 memcpy(arp->ar_tip, vptr->ip_addr, 4);
3359 crc = wol_calc_crc((sizeof(struct arp_packet) + 7) / 8, buf,
3360 (u8 *) & mask_pattern[0][0]);
3362 writew(crc, ®s->PatternCRC[0]);
3363 writew(WOLCR_ARP_EN, ®s->WOLCRSet);
3366 BYTE_REG_BITS_ON(PWCFG_WOLTYPE, ®s->PWCFGSet);
3367 BYTE_REG_BITS_ON(PWCFG_LEGACY_WOLEN, ®s->PWCFGSet);
3369 writew(0x0FFF, ®s->WOLSRClr);
3371 if (vptr->mii_status & VELOCITY_AUTONEG_ENABLE) {
3372 if (PHYID_GET_PHY_ID(vptr->phy_id) == PHYID_CICADA_CS8201)
3373 MII_REG_BITS_ON(AUXCR_MDPPS, MII_REG_AUXCR, vptr->mac_regs);
3375 MII_REG_BITS_OFF(G1000CR_1000FD | G1000CR_1000, MII_REG_G1000CR, vptr->mac_regs);
3378 if (vptr->mii_status & VELOCITY_SPEED_1000)
3379 MII_REG_BITS_ON(BMCR_REAUTO, MII_REG_BMCR, vptr->mac_regs);
3381 BYTE_REG_BITS_ON(CHIPGCR_FCMODE, ®s->CHIPGCR);
3385 GCR = readb(®s->CHIPGCR);
3386 GCR = (GCR & ~CHIPGCR_FCGMII) | CHIPGCR_FCFDX;
3387 writeb(GCR, ®s->CHIPGCR);
3390 BYTE_REG_BITS_OFF(ISR_PWEI, ®s->ISR);
3391 /* Turn on SWPTAG just before entering power mode */
3392 BYTE_REG_BITS_ON(STICKHW_SWPTAG, ®s->STICKHW);
3393 /* Go to bed ..... */
3394 BYTE_REG_BITS_ON((STICKHW_DS1 | STICKHW_DS0), ®s->STICKHW);
3399 static int velocity_suspend(struct pci_dev *pdev, pm_message_t state)
3401 struct net_device *dev = pci_get_drvdata(pdev);
3402 struct velocity_info *vptr = netdev_priv(dev);
3403 unsigned long flags;
3405 if(!netif_running(vptr->dev))
3408 netif_device_detach(vptr->dev);
3410 spin_lock_irqsave(&vptr->lock, flags);
3411 pci_save_state(pdev);
3413 if (vptr->flags & VELOCITY_FLAGS_WOL_ENABLED) {
3414 velocity_get_ip(vptr);
3415 velocity_save_context(vptr, &vptr->context);
3416 velocity_shutdown(vptr);
3417 velocity_set_wol(vptr);
3418 pci_enable_wake(pdev, 3, 1);
3419 pci_set_power_state(pdev, PCI_D3hot);
3421 velocity_save_context(vptr, &vptr->context);
3422 velocity_shutdown(vptr);
3423 pci_disable_device(pdev);
3424 pci_set_power_state(pdev, pci_choose_state(pdev, state));
3427 pci_set_power_state(pdev, pci_choose_state(pdev, state));
3429 spin_unlock_irqrestore(&vptr->lock, flags);
3433 static int velocity_resume(struct pci_dev *pdev)
3435 struct net_device *dev = pci_get_drvdata(pdev);
3436 struct velocity_info *vptr = netdev_priv(dev);
3437 unsigned long flags;
3440 if(!netif_running(vptr->dev))
3443 pci_set_power_state(pdev, PCI_D0);
3444 pci_enable_wake(pdev, 0, 0);
3445 pci_restore_state(pdev);
3447 mac_wol_reset(vptr->mac_regs);
3449 spin_lock_irqsave(&vptr->lock, flags);
3450 velocity_restore_context(vptr, &vptr->context);
3451 velocity_init_registers(vptr, VELOCITY_INIT_WOL);
3452 mac_disable_int(vptr->mac_regs);
3454 velocity_tx_srv(vptr, 0);
3456 for (i = 0; i < vptr->num_txq; i++) {
3457 if (vptr->td_used[i]) {
3458 mac_tx_queue_wake(vptr->mac_regs, i);
3462 mac_enable_int(vptr->mac_regs);
3463 spin_unlock_irqrestore(&vptr->lock, flags);
3464 netif_device_attach(vptr->dev);
3471 static int velocity_netdev_event(struct notifier_block *nb, unsigned long notification, void *ptr)
3473 struct in_ifaddr *ifa = (struct in_ifaddr *) ptr;
3476 struct net_device *dev = ifa->ifa_dev->dev;
3477 struct velocity_info *vptr;
3478 unsigned long flags;
3480 spin_lock_irqsave(&velocity_dev_list_lock, flags);
3481 list_for_each_entry(vptr, &velocity_dev_list, list) {
3482 if (vptr->dev == dev) {
3483 velocity_get_ip(vptr);
3487 spin_unlock_irqrestore(&velocity_dev_list_lock, flags);