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@lxorguk.ukuu.org.uk>
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 <linux/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;
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.
95 static void mac_get_cam_mask(struct mac_regs __iomem *regs, u8 *mask)
100 BYTE_REG_BITS_SET(CAMCR_PS_CAM_MASK, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
102 writeb(0, ®s->CAMADDR);
105 for (i = 0; i < 8; i++)
106 *mask++ = readb(&(regs->MARCAM[i]));
109 writeb(0, ®s->CAMADDR);
112 BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
117 * mac_set_cam_mask - Set a CAM mask
118 * @regs: register block for this velocity
119 * @mask: CAM mask to load
121 * Store a new mask into a CAM
123 static void mac_set_cam_mask(struct mac_regs __iomem *regs, u8 *mask)
126 /* Select CAM mask */
127 BYTE_REG_BITS_SET(CAMCR_PS_CAM_MASK, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
129 writeb(CAMADDR_CAMEN, ®s->CAMADDR);
131 for (i = 0; i < 8; i++)
132 writeb(*mask++, &(regs->MARCAM[i]));
135 writeb(0, ®s->CAMADDR);
138 BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
141 static void mac_set_vlan_cam_mask(struct mac_regs __iomem *regs, u8 *mask)
144 /* Select CAM mask */
145 BYTE_REG_BITS_SET(CAMCR_PS_CAM_MASK, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
147 writeb(CAMADDR_CAMEN | CAMADDR_VCAMSL, ®s->CAMADDR);
149 for (i = 0; i < 8; i++)
150 writeb(*mask++, &(regs->MARCAM[i]));
153 writeb(0, ®s->CAMADDR);
156 BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
160 * mac_set_cam - set CAM data
161 * @regs: register block of this velocity
163 * @addr: 2 or 6 bytes of CAM data
165 * Load an address or vlan tag into a CAM
167 static void mac_set_cam(struct mac_regs __iomem *regs, int idx, const u8 *addr)
171 /* Select CAM mask */
172 BYTE_REG_BITS_SET(CAMCR_PS_CAM_DATA, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
176 writeb(CAMADDR_CAMEN | idx, ®s->CAMADDR);
178 for (i = 0; i < 6; i++)
179 writeb(*addr++, &(regs->MARCAM[i]));
181 BYTE_REG_BITS_ON(CAMCR_CAMWR, ®s->CAMCR);
185 writeb(0, ®s->CAMADDR);
188 BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
191 static void mac_set_vlan_cam(struct mac_regs __iomem *regs, int idx,
195 /* Select CAM mask */
196 BYTE_REG_BITS_SET(CAMCR_PS_CAM_DATA, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
200 writeb(CAMADDR_CAMEN | CAMADDR_VCAMSL | idx, ®s->CAMADDR);
201 writew(*((u16 *) addr), ®s->MARCAM[0]);
203 BYTE_REG_BITS_ON(CAMCR_CAMWR, ®s->CAMCR);
207 writeb(0, ®s->CAMADDR);
210 BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
215 * mac_wol_reset - reset WOL after exiting low power
216 * @regs: register block of this velocity
218 * Called after we drop out of wake on lan mode in order to
219 * reset the Wake on lan features. This function doesn't restore
220 * the rest of the logic from the result of sleep/wakeup
222 static void mac_wol_reset(struct mac_regs __iomem *regs)
225 /* Turn off SWPTAG right after leaving power mode */
226 BYTE_REG_BITS_OFF(STICKHW_SWPTAG, ®s->STICKHW);
227 /* clear sticky bits */
228 BYTE_REG_BITS_OFF((STICKHW_DS1 | STICKHW_DS0), ®s->STICKHW);
230 BYTE_REG_BITS_OFF(CHIPGCR_FCGMII, ®s->CHIPGCR);
231 BYTE_REG_BITS_OFF(CHIPGCR_FCMODE, ®s->CHIPGCR);
232 /* disable force PME-enable */
233 writeb(WOLCFG_PMEOVR, ®s->WOLCFGClr);
234 /* disable power-event config bit */
235 writew(0xFFFF, ®s->WOLCRClr);
236 /* clear power status */
237 writew(0xFFFF, ®s->WOLSRClr);
240 static const struct ethtool_ops velocity_ethtool_ops;
243 Define module options
246 MODULE_AUTHOR("VIA Networking Technologies, Inc.");
247 MODULE_LICENSE("GPL");
248 MODULE_DESCRIPTION("VIA Networking Velocity Family Gigabit Ethernet Adapter Driver");
250 #define VELOCITY_PARAM(N, D) \
251 static int N[MAX_UNITS] = OPTION_DEFAULT;\
252 module_param_array(N, int, NULL, 0); \
253 MODULE_PARM_DESC(N, D);
255 #define RX_DESC_MIN 64
256 #define RX_DESC_MAX 255
257 #define RX_DESC_DEF 64
258 VELOCITY_PARAM(RxDescriptors, "Number of receive descriptors");
260 #define TX_DESC_MIN 16
261 #define TX_DESC_MAX 256
262 #define TX_DESC_DEF 64
263 VELOCITY_PARAM(TxDescriptors, "Number of transmit descriptors");
265 #define RX_THRESH_MIN 0
266 #define RX_THRESH_MAX 3
267 #define RX_THRESH_DEF 0
268 /* rx_thresh[] is used for controlling the receive fifo threshold.
269 0: indicate the rxfifo threshold is 128 bytes.
270 1: indicate the rxfifo threshold is 512 bytes.
271 2: indicate the rxfifo threshold is 1024 bytes.
272 3: indicate the rxfifo threshold is store & forward.
274 VELOCITY_PARAM(rx_thresh, "Receive fifo threshold");
276 #define DMA_LENGTH_MIN 0
277 #define DMA_LENGTH_MAX 7
278 #define DMA_LENGTH_DEF 0
280 /* DMA_length[] is used for controlling the DMA length
287 6: SF(flush till emply)
288 7: SF(flush till emply)
290 VELOCITY_PARAM(DMA_length, "DMA length");
292 #define IP_ALIG_DEF 0
293 /* IP_byte_align[] is used for IP header DWORD byte aligned
294 0: indicate the IP header won't be DWORD byte aligned.(Default) .
295 1: indicate the IP header will be DWORD byte aligned.
296 In some enviroment, the IP header should be DWORD byte aligned,
297 or the packet will be droped when we receive it. (eg: IPVS)
299 VELOCITY_PARAM(IP_byte_align, "Enable IP header dword aligned");
301 #define TX_CSUM_DEF 1
302 /* txcsum_offload[] is used for setting the checksum offload ability of NIC.
303 (We only support RX checksum offload now)
304 0: disable csum_offload[checksum offload
305 1: enable checksum offload. (Default)
307 VELOCITY_PARAM(txcsum_offload, "Enable transmit packet checksum offload");
309 #define FLOW_CNTL_DEF 1
310 #define FLOW_CNTL_MIN 1
311 #define FLOW_CNTL_MAX 5
313 /* flow_control[] is used for setting the flow control ability of NIC.
314 1: hardware deafult - AUTO (default). Use Hardware default value in ANAR.
315 2: enable TX flow control.
316 3: enable RX flow control.
317 4: enable RX/TX flow control.
320 VELOCITY_PARAM(flow_control, "Enable flow control ability");
322 #define MED_LNK_DEF 0
323 #define MED_LNK_MIN 0
324 #define MED_LNK_MAX 4
325 /* speed_duplex[] is used for setting the speed and duplex mode of NIC.
326 0: indicate autonegotiation for both speed and duplex mode
327 1: indicate 100Mbps half duplex mode
328 2: indicate 100Mbps full duplex mode
329 3: indicate 10Mbps half duplex mode
330 4: indicate 10Mbps full duplex mode
333 if EEPROM have been set to the force mode, this option is ignored
336 VELOCITY_PARAM(speed_duplex, "Setting the speed and duplex mode");
338 #define VAL_PKT_LEN_DEF 0
339 /* ValPktLen[] is used for setting the checksum offload ability of NIC.
340 0: Receive frame with invalid layer 2 length (Default)
341 1: Drop frame with invalid layer 2 length
343 VELOCITY_PARAM(ValPktLen, "Receiving or Drop invalid 802.3 frame");
345 #define WOL_OPT_DEF 0
346 #define WOL_OPT_MIN 0
347 #define WOL_OPT_MAX 7
348 /* wol_opts[] is used for controlling wake on lan behavior.
349 0: Wake up if recevied a magic packet. (Default)
350 1: Wake up if link status is on/off.
351 2: Wake up if recevied an arp packet.
352 4: Wake up if recevied any unicast packet.
353 Those value can be sumed up to support more than one option.
355 VELOCITY_PARAM(wol_opts, "Wake On Lan options");
357 #define INT_WORKS_DEF 20
358 #define INT_WORKS_MIN 10
359 #define INT_WORKS_MAX 64
361 VELOCITY_PARAM(int_works, "Number of packets per interrupt services");
363 static int rx_copybreak = 200;
364 module_param(rx_copybreak, int, 0644);
365 MODULE_PARM_DESC(rx_copybreak, "Copy breakpoint for copy-only-tiny-frames");
368 * Internal board variants. At the moment we have only one
370 static struct velocity_info_tbl chip_info_table[] = {
371 {CHIP_TYPE_VT6110, "VIA Networking Velocity Family Gigabit Ethernet Adapter", 1, 0x00FFFFFFUL},
376 * Describe the PCI device identifiers that we support in this
377 * device driver. Used for hotplug autoloading.
379 static const struct pci_device_id velocity_id_table[] __devinitdata = {
380 { PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_612X) },
384 MODULE_DEVICE_TABLE(pci, velocity_id_table);
387 * get_chip_name - identifier to name
388 * @id: chip identifier
390 * Given a chip identifier return a suitable description. Returns
391 * a pointer a static string valid while the driver is loaded.
393 static const char __devinit *get_chip_name(enum chip_type chip_id)
396 for (i = 0; chip_info_table[i].name != NULL; i++)
397 if (chip_info_table[i].chip_id == chip_id)
399 return chip_info_table[i].name;
403 * velocity_remove1 - device unplug
404 * @pdev: PCI device being removed
406 * Device unload callback. Called on an unplug or on module
407 * unload for each active device that is present. Disconnects
408 * the device from the network layer and frees all the resources
410 static void __devexit velocity_remove1(struct pci_dev *pdev)
412 struct net_device *dev = pci_get_drvdata(pdev);
413 struct velocity_info *vptr = netdev_priv(dev);
415 unregister_netdev(dev);
416 iounmap(vptr->mac_regs);
417 pci_release_regions(pdev);
418 pci_disable_device(pdev);
419 pci_set_drvdata(pdev, NULL);
426 * velocity_set_int_opt - parser for integer options
427 * @opt: pointer to option value
428 * @val: value the user requested (or -1 for default)
429 * @min: lowest value allowed
430 * @max: highest value allowed
431 * @def: default value
432 * @name: property name
435 * Set an integer property in the module options. This function does
436 * all the verification and checking as well as reporting so that
437 * we don't duplicate code for each option.
439 static void __devinit velocity_set_int_opt(int *opt, int val, int min, int max, int def, char *name, const char *devname)
443 else if (val < min || val > max) {
444 VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: the value of parameter %s is invalid, the valid range is (%d-%d)\n",
445 devname, name, min, max);
448 VELOCITY_PRT(MSG_LEVEL_INFO, KERN_INFO "%s: set value of parameter %s to %d\n",
455 * velocity_set_bool_opt - parser for boolean options
456 * @opt: pointer to option value
457 * @val: value the user requested (or -1 for default)
458 * @def: default value (yes/no)
459 * @flag: numeric value to set for true.
460 * @name: property name
463 * Set a boolean property in the module options. This function does
464 * all the verification and checking as well as reporting so that
465 * we don't duplicate code for each option.
467 static void __devinit velocity_set_bool_opt(u32 *opt, int val, int def, u32 flag, char *name, const char *devname)
471 *opt |= (def ? flag : 0);
472 else if (val < 0 || val > 1) {
473 printk(KERN_NOTICE "%s: the value of parameter %s is invalid, the valid range is (0-1)\n",
475 *opt |= (def ? flag : 0);
477 printk(KERN_INFO "%s: set parameter %s to %s\n",
478 devname, name, val ? "TRUE" : "FALSE");
479 *opt |= (val ? flag : 0);
484 * velocity_get_options - set options on device
485 * @opts: option structure for the device
486 * @index: index of option to use in module options array
487 * @devname: device name
489 * Turn the module and command options into a single structure
490 * for the current device
492 static void __devinit velocity_get_options(struct velocity_opt *opts, int index, const char *devname)
495 velocity_set_int_opt(&opts->rx_thresh, rx_thresh[index], RX_THRESH_MIN, RX_THRESH_MAX, RX_THRESH_DEF, "rx_thresh", devname);
496 velocity_set_int_opt(&opts->DMA_length, DMA_length[index], DMA_LENGTH_MIN, DMA_LENGTH_MAX, DMA_LENGTH_DEF, "DMA_length", devname);
497 velocity_set_int_opt(&opts->numrx, RxDescriptors[index], RX_DESC_MIN, RX_DESC_MAX, RX_DESC_DEF, "RxDescriptors", devname);
498 velocity_set_int_opt(&opts->numtx, TxDescriptors[index], TX_DESC_MIN, TX_DESC_MAX, TX_DESC_DEF, "TxDescriptors", devname);
500 velocity_set_bool_opt(&opts->flags, txcsum_offload[index], TX_CSUM_DEF, VELOCITY_FLAGS_TX_CSUM, "txcsum_offload", devname);
501 velocity_set_int_opt(&opts->flow_cntl, flow_control[index], FLOW_CNTL_MIN, FLOW_CNTL_MAX, FLOW_CNTL_DEF, "flow_control", devname);
502 velocity_set_bool_opt(&opts->flags, IP_byte_align[index], IP_ALIG_DEF, VELOCITY_FLAGS_IP_ALIGN, "IP_byte_align", devname);
503 velocity_set_bool_opt(&opts->flags, ValPktLen[index], VAL_PKT_LEN_DEF, VELOCITY_FLAGS_VAL_PKT_LEN, "ValPktLen", devname);
504 velocity_set_int_opt((int *) &opts->spd_dpx, speed_duplex[index], MED_LNK_MIN, MED_LNK_MAX, MED_LNK_DEF, "Media link mode", devname);
505 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);
506 velocity_set_int_opt((int *) &opts->int_works, int_works[index], INT_WORKS_MIN, INT_WORKS_MAX, INT_WORKS_DEF, "Interrupt service works", devname);
507 opts->numrx = (opts->numrx & ~3);
511 * velocity_init_cam_filter - initialise CAM
512 * @vptr: velocity to program
514 * Initialize the content addressable memory used for filters. Load
515 * appropriately according to the presence of VLAN
517 static void velocity_init_cam_filter(struct velocity_info *vptr)
519 struct mac_regs __iomem *regs = vptr->mac_regs;
521 /* Turn on MCFG_PQEN, turn off MCFG_RTGOPT */
522 WORD_REG_BITS_SET(MCFG_PQEN, MCFG_RTGOPT, ®s->MCFG);
523 WORD_REG_BITS_ON(MCFG_VIDFR, ®s->MCFG);
525 /* Disable all CAMs */
526 memset(vptr->vCAMmask, 0, sizeof(u8) * 8);
527 memset(vptr->mCAMmask, 0, sizeof(u8) * 8);
528 mac_set_vlan_cam_mask(regs, vptr->vCAMmask);
529 mac_set_cam_mask(regs, vptr->mCAMmask);
533 unsigned int vid, i = 0;
535 if (!vlan_group_get_device(vptr->vlgrp, 0))
536 WORD_REG_BITS_ON(MCFG_RTGOPT, ®s->MCFG);
538 for (vid = 1; (vid < VLAN_VID_MASK); vid++) {
539 if (vlan_group_get_device(vptr->vlgrp, vid)) {
540 mac_set_vlan_cam(regs, i, (u8 *) &vid);
541 vptr->vCAMmask[i / 8] |= 0x1 << (i % 8);
542 if (++i >= VCAM_SIZE)
546 mac_set_vlan_cam_mask(regs, vptr->vCAMmask);
550 static void velocity_vlan_rx_register(struct net_device *dev,
551 struct vlan_group *grp)
553 struct velocity_info *vptr = netdev_priv(dev);
558 static void velocity_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
560 struct velocity_info *vptr = netdev_priv(dev);
562 spin_lock_irq(&vptr->lock);
563 velocity_init_cam_filter(vptr);
564 spin_unlock_irq(&vptr->lock);
567 static void velocity_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
569 struct velocity_info *vptr = netdev_priv(dev);
571 spin_lock_irq(&vptr->lock);
572 vlan_group_set_device(vptr->vlgrp, vid, NULL);
573 velocity_init_cam_filter(vptr);
574 spin_unlock_irq(&vptr->lock);
577 static void velocity_init_rx_ring_indexes(struct velocity_info *vptr)
579 vptr->rx.dirty = vptr->rx.filled = vptr->rx.curr = 0;
583 * velocity_rx_reset - handle a receive reset
584 * @vptr: velocity we are resetting
586 * Reset the ownership and status for the receive ring side.
587 * Hand all the receive queue to the NIC.
589 static void velocity_rx_reset(struct velocity_info *vptr)
592 struct mac_regs __iomem *regs = vptr->mac_regs;
595 velocity_init_rx_ring_indexes(vptr);
598 * Init state, all RD entries belong to the NIC
600 for (i = 0; i < vptr->options.numrx; ++i)
601 vptr->rx.ring[i].rdesc0.len |= OWNED_BY_NIC;
603 writew(vptr->options.numrx, ®s->RBRDU);
604 writel(vptr->rx.pool_dma, ®s->RDBaseLo);
605 writew(0, ®s->RDIdx);
606 writew(vptr->options.numrx - 1, ®s->RDCSize);
610 * velocity_get_opt_media_mode - get media selection
611 * @vptr: velocity adapter
613 * Get the media mode stored in EEPROM or module options and load
614 * mii_status accordingly. The requested link state information
617 static u32 velocity_get_opt_media_mode(struct velocity_info *vptr)
621 switch (vptr->options.spd_dpx) {
623 status = VELOCITY_AUTONEG_ENABLE;
625 case SPD_DPX_100_FULL:
626 status = VELOCITY_SPEED_100 | VELOCITY_DUPLEX_FULL;
628 case SPD_DPX_10_FULL:
629 status = VELOCITY_SPEED_10 | VELOCITY_DUPLEX_FULL;
631 case SPD_DPX_100_HALF:
632 status = VELOCITY_SPEED_100;
634 case SPD_DPX_10_HALF:
635 status = VELOCITY_SPEED_10;
638 vptr->mii_status = status;
643 * safe_disable_mii_autopoll - autopoll off
644 * @regs: velocity registers
646 * Turn off the autopoll and wait for it to disable on the chip
648 static void safe_disable_mii_autopoll(struct mac_regs __iomem *regs)
653 writeb(0, ®s->MIICR);
654 for (ww = 0; ww < W_MAX_TIMEOUT; ww++) {
656 if (BYTE_REG_BITS_IS_ON(MIISR_MIDLE, ®s->MIISR))
662 * enable_mii_autopoll - turn on autopolling
663 * @regs: velocity registers
665 * Enable the MII link status autopoll feature on the Velocity
666 * hardware. Wait for it to enable.
668 static void enable_mii_autopoll(struct mac_regs __iomem *regs)
672 writeb(0, &(regs->MIICR));
673 writeb(MIIADR_SWMPL, ®s->MIIADR);
675 for (ii = 0; ii < W_MAX_TIMEOUT; ii++) {
677 if (BYTE_REG_BITS_IS_ON(MIISR_MIDLE, ®s->MIISR))
681 writeb(MIICR_MAUTO, ®s->MIICR);
683 for (ii = 0; ii < W_MAX_TIMEOUT; ii++) {
685 if (!BYTE_REG_BITS_IS_ON(MIISR_MIDLE, ®s->MIISR))
692 * velocity_mii_read - read MII data
693 * @regs: velocity registers
694 * @index: MII register index
695 * @data: buffer for received data
697 * Perform a single read of an MII 16bit register. Returns zero
698 * on success or -ETIMEDOUT if the PHY did not respond.
700 static int velocity_mii_read(struct mac_regs __iomem *regs, u8 index, u16 *data)
705 * Disable MIICR_MAUTO, so that mii addr can be set normally
707 safe_disable_mii_autopoll(regs);
709 writeb(index, ®s->MIIADR);
711 BYTE_REG_BITS_ON(MIICR_RCMD, ®s->MIICR);
713 for (ww = 0; ww < W_MAX_TIMEOUT; ww++) {
714 if (!(readb(®s->MIICR) & MIICR_RCMD))
718 *data = readw(®s->MIIDATA);
720 enable_mii_autopoll(regs);
721 if (ww == W_MAX_TIMEOUT)
728 * mii_check_media_mode - check media state
729 * @regs: velocity registers
731 * Check the current MII status and determine the link status
734 static u32 mii_check_media_mode(struct mac_regs __iomem *regs)
739 if (!MII_REG_BITS_IS_ON(BMSR_LNK, MII_REG_BMSR, regs))
740 status |= VELOCITY_LINK_FAIL;
742 if (MII_REG_BITS_IS_ON(G1000CR_1000FD, MII_REG_G1000CR, regs))
743 status |= VELOCITY_SPEED_1000 | VELOCITY_DUPLEX_FULL;
744 else if (MII_REG_BITS_IS_ON(G1000CR_1000, MII_REG_G1000CR, regs))
745 status |= (VELOCITY_SPEED_1000);
747 velocity_mii_read(regs, MII_REG_ANAR, &ANAR);
748 if (ANAR & ANAR_TXFD)
749 status |= (VELOCITY_SPEED_100 | VELOCITY_DUPLEX_FULL);
750 else if (ANAR & ANAR_TX)
751 status |= VELOCITY_SPEED_100;
752 else if (ANAR & ANAR_10FD)
753 status |= (VELOCITY_SPEED_10 | VELOCITY_DUPLEX_FULL);
755 status |= (VELOCITY_SPEED_10);
758 if (MII_REG_BITS_IS_ON(BMCR_AUTO, MII_REG_BMCR, regs)) {
759 velocity_mii_read(regs, MII_REG_ANAR, &ANAR);
760 if ((ANAR & (ANAR_TXFD | ANAR_TX | ANAR_10FD | ANAR_10))
761 == (ANAR_TXFD | ANAR_TX | ANAR_10FD | ANAR_10)) {
762 if (MII_REG_BITS_IS_ON(G1000CR_1000 | G1000CR_1000FD, MII_REG_G1000CR, regs))
763 status |= VELOCITY_AUTONEG_ENABLE;
771 * velocity_mii_write - write MII data
772 * @regs: velocity registers
773 * @index: MII register index
774 * @data: 16bit data for the MII register
776 * Perform a single write to an MII 16bit register. Returns zero
777 * on success or -ETIMEDOUT if the PHY did not respond.
779 static int velocity_mii_write(struct mac_regs __iomem *regs, u8 mii_addr, u16 data)
784 * Disable MIICR_MAUTO, so that mii addr can be set normally
786 safe_disable_mii_autopoll(regs);
789 writeb(mii_addr, ®s->MIIADR);
791 writew(data, ®s->MIIDATA);
793 /* turn on MIICR_WCMD */
794 BYTE_REG_BITS_ON(MIICR_WCMD, ®s->MIICR);
796 /* W_MAX_TIMEOUT is the timeout period */
797 for (ww = 0; ww < W_MAX_TIMEOUT; ww++) {
799 if (!(readb(®s->MIICR) & MIICR_WCMD))
802 enable_mii_autopoll(regs);
804 if (ww == W_MAX_TIMEOUT)
810 * set_mii_flow_control - flow control setup
811 * @vptr: velocity interface
813 * Set up the flow control on this interface according to
814 * the supplied user/eeprom options.
816 static void set_mii_flow_control(struct velocity_info *vptr)
818 /*Enable or Disable PAUSE in ANAR */
819 switch (vptr->options.flow_cntl) {
821 MII_REG_BITS_OFF(ANAR_PAUSE, MII_REG_ANAR, vptr->mac_regs);
822 MII_REG_BITS_ON(ANAR_ASMDIR, MII_REG_ANAR, vptr->mac_regs);
826 MII_REG_BITS_ON(ANAR_PAUSE, MII_REG_ANAR, vptr->mac_regs);
827 MII_REG_BITS_ON(ANAR_ASMDIR, MII_REG_ANAR, vptr->mac_regs);
830 case FLOW_CNTL_TX_RX:
831 MII_REG_BITS_ON(ANAR_PAUSE, MII_REG_ANAR, vptr->mac_regs);
832 MII_REG_BITS_ON(ANAR_ASMDIR, MII_REG_ANAR, vptr->mac_regs);
835 case FLOW_CNTL_DISABLE:
836 MII_REG_BITS_OFF(ANAR_PAUSE, MII_REG_ANAR, vptr->mac_regs);
837 MII_REG_BITS_OFF(ANAR_ASMDIR, MII_REG_ANAR, vptr->mac_regs);
845 * mii_set_auto_on - autonegotiate on
848 * Enable autonegotation on this interface
850 static void mii_set_auto_on(struct velocity_info *vptr)
852 if (MII_REG_BITS_IS_ON(BMCR_AUTO, MII_REG_BMCR, vptr->mac_regs))
853 MII_REG_BITS_ON(BMCR_REAUTO, MII_REG_BMCR, vptr->mac_regs);
855 MII_REG_BITS_ON(BMCR_AUTO, MII_REG_BMCR, vptr->mac_regs);
858 static u32 check_connection_type(struct mac_regs __iomem *regs)
863 PHYSR0 = readb(®s->PHYSR0);
866 if (!(PHYSR0 & PHYSR0_LINKGD))
867 status|=VELOCITY_LINK_FAIL;
870 if (PHYSR0 & PHYSR0_FDPX)
871 status |= VELOCITY_DUPLEX_FULL;
873 if (PHYSR0 & PHYSR0_SPDG)
874 status |= VELOCITY_SPEED_1000;
875 else if (PHYSR0 & PHYSR0_SPD10)
876 status |= VELOCITY_SPEED_10;
878 status |= VELOCITY_SPEED_100;
880 if (MII_REG_BITS_IS_ON(BMCR_AUTO, MII_REG_BMCR, regs)) {
881 velocity_mii_read(regs, MII_REG_ANAR, &ANAR);
882 if ((ANAR & (ANAR_TXFD | ANAR_TX | ANAR_10FD | ANAR_10))
883 == (ANAR_TXFD | ANAR_TX | ANAR_10FD | ANAR_10)) {
884 if (MII_REG_BITS_IS_ON(G1000CR_1000 | G1000CR_1000FD, MII_REG_G1000CR, regs))
885 status |= VELOCITY_AUTONEG_ENABLE;
895 * velocity_set_media_mode - set media mode
896 * @mii_status: old MII link state
898 * Check the media link state and configure the flow control
899 * PHY and also velocity hardware setup accordingly. In particular
900 * we need to set up CD polling and frame bursting.
902 static int velocity_set_media_mode(struct velocity_info *vptr, u32 mii_status)
905 struct mac_regs __iomem *regs = vptr->mac_regs;
907 vptr->mii_status = mii_check_media_mode(vptr->mac_regs);
908 curr_status = vptr->mii_status & (~VELOCITY_LINK_FAIL);
910 /* Set mii link status */
911 set_mii_flow_control(vptr);
914 Check if new status is consisent with current status
915 if (((mii_status & curr_status) & VELOCITY_AUTONEG_ENABLE)
916 || (mii_status==curr_status)) {
917 vptr->mii_status=mii_check_media_mode(vptr->mac_regs);
918 vptr->mii_status=check_connection_type(vptr->mac_regs);
919 VELOCITY_PRT(MSG_LEVEL_INFO, "Velocity link no change\n");
924 if (PHYID_GET_PHY_ID(vptr->phy_id) == PHYID_CICADA_CS8201)
925 MII_REG_BITS_ON(AUXCR_MDPPS, MII_REG_AUXCR, vptr->mac_regs);
928 * If connection type is AUTO
930 if (mii_status & VELOCITY_AUTONEG_ENABLE) {
931 VELOCITY_PRT(MSG_LEVEL_INFO, "Velocity is AUTO mode\n");
932 /* clear force MAC mode bit */
933 BYTE_REG_BITS_OFF(CHIPGCR_FCMODE, ®s->CHIPGCR);
934 /* set duplex mode of MAC according to duplex mode of MII */
935 MII_REG_BITS_ON(ANAR_TXFD | ANAR_TX | ANAR_10FD | ANAR_10, MII_REG_ANAR, vptr->mac_regs);
936 MII_REG_BITS_ON(G1000CR_1000FD | G1000CR_1000, MII_REG_G1000CR, vptr->mac_regs);
937 MII_REG_BITS_ON(BMCR_SPEED1G, MII_REG_BMCR, vptr->mac_regs);
939 /* enable AUTO-NEGO mode */
940 mii_set_auto_on(vptr);
946 * 1. if it's 3119, disable frame bursting in halfduplex mode
947 * and enable it in fullduplex mode
948 * 2. set correct MII/GMII and half/full duplex mode in CHIPGCR
949 * 3. only enable CD heart beat counter in 10HD mode
952 /* set force MAC mode bit */
953 BYTE_REG_BITS_ON(CHIPGCR_FCMODE, ®s->CHIPGCR);
955 CHIPGCR = readb(®s->CHIPGCR);
956 CHIPGCR &= ~CHIPGCR_FCGMII;
958 if (mii_status & VELOCITY_DUPLEX_FULL) {
959 CHIPGCR |= CHIPGCR_FCFDX;
960 writeb(CHIPGCR, ®s->CHIPGCR);
961 VELOCITY_PRT(MSG_LEVEL_INFO, "set Velocity to forced full mode\n");
962 if (vptr->rev_id < REV_ID_VT3216_A0)
963 BYTE_REG_BITS_OFF(TCR_TB2BDIS, ®s->TCR);
965 CHIPGCR &= ~CHIPGCR_FCFDX;
966 VELOCITY_PRT(MSG_LEVEL_INFO, "set Velocity to forced half mode\n");
967 writeb(CHIPGCR, ®s->CHIPGCR);
968 if (vptr->rev_id < REV_ID_VT3216_A0)
969 BYTE_REG_BITS_ON(TCR_TB2BDIS, ®s->TCR);
972 MII_REG_BITS_OFF(G1000CR_1000FD | G1000CR_1000, MII_REG_G1000CR, vptr->mac_regs);
974 if (!(mii_status & VELOCITY_DUPLEX_FULL) && (mii_status & VELOCITY_SPEED_10))
975 BYTE_REG_BITS_OFF(TESTCFG_HBDIS, ®s->TESTCFG);
977 BYTE_REG_BITS_ON(TESTCFG_HBDIS, ®s->TESTCFG);
979 /* MII_REG_BITS_OFF(BMCR_SPEED1G, MII_REG_BMCR, vptr->mac_regs); */
980 velocity_mii_read(vptr->mac_regs, MII_REG_ANAR, &ANAR);
981 ANAR &= (~(ANAR_TXFD | ANAR_TX | ANAR_10FD | ANAR_10));
982 if (mii_status & VELOCITY_SPEED_100) {
983 if (mii_status & VELOCITY_DUPLEX_FULL)
988 if (mii_status & VELOCITY_DUPLEX_FULL)
993 velocity_mii_write(vptr->mac_regs, MII_REG_ANAR, ANAR);
994 /* enable AUTO-NEGO mode */
995 mii_set_auto_on(vptr);
996 /* MII_REG_BITS_ON(BMCR_AUTO, MII_REG_BMCR, vptr->mac_regs); */
998 /* vptr->mii_status=mii_check_media_mode(vptr->mac_regs); */
999 /* vptr->mii_status=check_connection_type(vptr->mac_regs); */
1000 return VELOCITY_LINK_CHANGE;
1004 * velocity_print_link_status - link status reporting
1005 * @vptr: velocity to report on
1007 * Turn the link status of the velocity card into a kernel log
1008 * description of the new link state, detailing speed and duplex
1011 static void velocity_print_link_status(struct velocity_info *vptr)
1014 if (vptr->mii_status & VELOCITY_LINK_FAIL) {
1015 VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: failed to detect cable link\n", vptr->dev->name);
1016 } else if (vptr->options.spd_dpx == SPD_DPX_AUTO) {
1017 VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: Link auto-negotiation", vptr->dev->name);
1019 if (vptr->mii_status & VELOCITY_SPEED_1000)
1020 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 1000M bps");
1021 else if (vptr->mii_status & VELOCITY_SPEED_100)
1022 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 100M bps");
1024 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 10M bps");
1026 if (vptr->mii_status & VELOCITY_DUPLEX_FULL)
1027 VELOCITY_PRT(MSG_LEVEL_INFO, " full duplex\n");
1029 VELOCITY_PRT(MSG_LEVEL_INFO, " half duplex\n");
1031 VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: Link forced", vptr->dev->name);
1032 switch (vptr->options.spd_dpx) {
1033 case SPD_DPX_100_HALF:
1034 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 100M bps half duplex\n");
1036 case SPD_DPX_100_FULL:
1037 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 100M bps full duplex\n");
1039 case SPD_DPX_10_HALF:
1040 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 10M bps half duplex\n");
1042 case SPD_DPX_10_FULL:
1043 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 10M bps full duplex\n");
1052 * enable_flow_control_ability - flow control
1053 * @vptr: veloity to configure
1055 * Set up flow control according to the flow control options
1056 * determined by the eeprom/configuration.
1058 static void enable_flow_control_ability(struct velocity_info *vptr)
1061 struct mac_regs __iomem *regs = vptr->mac_regs;
1063 switch (vptr->options.flow_cntl) {
1065 case FLOW_CNTL_DEFAULT:
1066 if (BYTE_REG_BITS_IS_ON(PHYSR0_RXFLC, ®s->PHYSR0))
1067 writel(CR0_FDXRFCEN, ®s->CR0Set);
1069 writel(CR0_FDXRFCEN, ®s->CR0Clr);
1071 if (BYTE_REG_BITS_IS_ON(PHYSR0_TXFLC, ®s->PHYSR0))
1072 writel(CR0_FDXTFCEN, ®s->CR0Set);
1074 writel(CR0_FDXTFCEN, ®s->CR0Clr);
1078 writel(CR0_FDXTFCEN, ®s->CR0Set);
1079 writel(CR0_FDXRFCEN, ®s->CR0Clr);
1083 writel(CR0_FDXRFCEN, ®s->CR0Set);
1084 writel(CR0_FDXTFCEN, ®s->CR0Clr);
1087 case FLOW_CNTL_TX_RX:
1088 writel(CR0_FDXTFCEN, ®s->CR0Set);
1089 writel(CR0_FDXRFCEN, ®s->CR0Set);
1092 case FLOW_CNTL_DISABLE:
1093 writel(CR0_FDXRFCEN, ®s->CR0Clr);
1094 writel(CR0_FDXTFCEN, ®s->CR0Clr);
1104 * velocity_soft_reset - soft reset
1105 * @vptr: velocity to reset
1107 * Kick off a soft reset of the velocity adapter and then poll
1108 * until the reset sequence has completed before returning.
1110 static int velocity_soft_reset(struct velocity_info *vptr)
1112 struct mac_regs __iomem *regs = vptr->mac_regs;
1115 writel(CR0_SFRST, ®s->CR0Set);
1117 for (i = 0; i < W_MAX_TIMEOUT; i++) {
1119 if (!DWORD_REG_BITS_IS_ON(CR0_SFRST, ®s->CR0Set))
1123 if (i == W_MAX_TIMEOUT) {
1124 writel(CR0_FORSRST, ®s->CR0Set);
1125 /* FIXME: PCI POSTING */
1133 * velocity_set_multi - filter list change callback
1134 * @dev: network device
1136 * Called by the network layer when the filter lists need to change
1137 * for a velocity adapter. Reload the CAMs with the new address
1140 static void velocity_set_multi(struct net_device *dev)
1142 struct velocity_info *vptr = netdev_priv(dev);
1143 struct mac_regs __iomem *regs = vptr->mac_regs;
1146 struct dev_mc_list *mclist;
1148 if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */
1149 writel(0xffffffff, ®s->MARCAM[0]);
1150 writel(0xffffffff, ®s->MARCAM[4]);
1151 rx_mode = (RCR_AM | RCR_AB | RCR_PROM);
1152 } else if ((dev->mc_count > vptr->multicast_limit)
1153 || (dev->flags & IFF_ALLMULTI)) {
1154 writel(0xffffffff, ®s->MARCAM[0]);
1155 writel(0xffffffff, ®s->MARCAM[4]);
1156 rx_mode = (RCR_AM | RCR_AB);
1158 int offset = MCAM_SIZE - vptr->multicast_limit;
1159 mac_get_cam_mask(regs, vptr->mCAMmask);
1161 for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count; i++, mclist = mclist->next) {
1162 mac_set_cam(regs, i + offset, mclist->dmi_addr);
1163 vptr->mCAMmask[(offset + i) / 8] |= 1 << ((offset + i) & 7);
1166 mac_set_cam_mask(regs, vptr->mCAMmask);
1167 rx_mode = RCR_AM | RCR_AB | RCR_AP;
1169 if (dev->mtu > 1500)
1172 BYTE_REG_BITS_ON(rx_mode, ®s->RCR);
1177 * MII access , media link mode setting functions
1181 * mii_init - set up MII
1182 * @vptr: velocity adapter
1183 * @mii_status: links tatus
1185 * Set up the PHY for the current link state.
1187 static void mii_init(struct velocity_info *vptr, u32 mii_status)
1191 switch (PHYID_GET_PHY_ID(vptr->phy_id)) {
1192 case PHYID_CICADA_CS8201:
1194 * Reset to hardware default
1196 MII_REG_BITS_OFF((ANAR_ASMDIR | ANAR_PAUSE), MII_REG_ANAR, vptr->mac_regs);
1198 * Turn on ECHODIS bit in NWay-forced full mode and turn it
1199 * off it in NWay-forced half mode for NWay-forced v.s.
1200 * legacy-forced issue.
1202 if (vptr->mii_status & VELOCITY_DUPLEX_FULL)
1203 MII_REG_BITS_ON(TCSR_ECHODIS, MII_REG_TCSR, vptr->mac_regs);
1205 MII_REG_BITS_OFF(TCSR_ECHODIS, MII_REG_TCSR, vptr->mac_regs);
1207 * Turn on Link/Activity LED enable bit for CIS8201
1209 MII_REG_BITS_ON(PLED_LALBE, MII_REG_PLED, vptr->mac_regs);
1211 case PHYID_VT3216_32BIT:
1212 case PHYID_VT3216_64BIT:
1214 * Reset to hardware default
1216 MII_REG_BITS_ON((ANAR_ASMDIR | ANAR_PAUSE), MII_REG_ANAR, vptr->mac_regs);
1218 * Turn on ECHODIS bit in NWay-forced full mode and turn it
1219 * off it in NWay-forced half mode for NWay-forced v.s.
1220 * legacy-forced issue
1222 if (vptr->mii_status & VELOCITY_DUPLEX_FULL)
1223 MII_REG_BITS_ON(TCSR_ECHODIS, MII_REG_TCSR, vptr->mac_regs);
1225 MII_REG_BITS_OFF(TCSR_ECHODIS, MII_REG_TCSR, vptr->mac_regs);
1228 case PHYID_MARVELL_1000:
1229 case PHYID_MARVELL_1000S:
1231 * Assert CRS on Transmit
1233 MII_REG_BITS_ON(PSCR_ACRSTX, MII_REG_PSCR, vptr->mac_regs);
1235 * Reset to hardware default
1237 MII_REG_BITS_ON((ANAR_ASMDIR | ANAR_PAUSE), MII_REG_ANAR, vptr->mac_regs);
1242 velocity_mii_read(vptr->mac_regs, MII_REG_BMCR, &BMCR);
1243 if (BMCR & BMCR_ISO) {
1245 velocity_mii_write(vptr->mac_regs, MII_REG_BMCR, BMCR);
1250 * setup_queue_timers - Setup interrupt timers
1252 * Setup interrupt frequency during suppression (timeout if the frame
1253 * count isn't filled).
1255 static void setup_queue_timers(struct velocity_info *vptr)
1257 /* Only for newer revisions */
1258 if (vptr->rev_id >= REV_ID_VT3216_A0) {
1259 u8 txqueue_timer = 0;
1260 u8 rxqueue_timer = 0;
1262 if (vptr->mii_status & (VELOCITY_SPEED_1000 |
1263 VELOCITY_SPEED_100)) {
1264 txqueue_timer = vptr->options.txqueue_timer;
1265 rxqueue_timer = vptr->options.rxqueue_timer;
1268 writeb(txqueue_timer, &vptr->mac_regs->TQETMR);
1269 writeb(rxqueue_timer, &vptr->mac_regs->RQETMR);
1273 * setup_adaptive_interrupts - Setup interrupt suppression
1275 * @vptr velocity adapter
1277 * The velocity is able to suppress interrupt during high interrupt load.
1278 * This function turns on that feature.
1280 static void setup_adaptive_interrupts(struct velocity_info *vptr)
1282 struct mac_regs __iomem *regs = vptr->mac_regs;
1283 u16 tx_intsup = vptr->options.tx_intsup;
1284 u16 rx_intsup = vptr->options.rx_intsup;
1286 /* Setup default interrupt mask (will be changed below) */
1287 vptr->int_mask = INT_MASK_DEF;
1289 /* Set Tx Interrupt Suppression Threshold */
1290 writeb(CAMCR_PS0, ®s->CAMCR);
1291 if (tx_intsup != 0) {
1292 vptr->int_mask &= ~(ISR_PTXI | ISR_PTX0I | ISR_PTX1I |
1293 ISR_PTX2I | ISR_PTX3I);
1294 writew(tx_intsup, ®s->ISRCTL);
1296 writew(ISRCTL_TSUPDIS, ®s->ISRCTL);
1298 /* Set Rx Interrupt Suppression Threshold */
1299 writeb(CAMCR_PS1, ®s->CAMCR);
1300 if (rx_intsup != 0) {
1301 vptr->int_mask &= ~ISR_PRXI;
1302 writew(rx_intsup, ®s->ISRCTL);
1304 writew(ISRCTL_RSUPDIS, ®s->ISRCTL);
1306 /* Select page to interrupt hold timer */
1307 writeb(0, ®s->CAMCR);
1311 * velocity_init_registers - initialise MAC registers
1312 * @vptr: velocity to init
1313 * @type: type of initialisation (hot or cold)
1315 * Initialise the MAC on a reset or on first set up on the
1318 static void velocity_init_registers(struct velocity_info *vptr,
1319 enum velocity_init_type type)
1321 struct mac_regs __iomem *regs = vptr->mac_regs;
1324 mac_wol_reset(regs);
1327 case VELOCITY_INIT_RESET:
1328 case VELOCITY_INIT_WOL:
1330 netif_stop_queue(vptr->dev);
1333 * Reset RX to prevent RX pointer not on the 4X location
1335 velocity_rx_reset(vptr);
1336 mac_rx_queue_run(regs);
1337 mac_rx_queue_wake(regs);
1339 mii_status = velocity_get_opt_media_mode(vptr);
1340 if (velocity_set_media_mode(vptr, mii_status) != VELOCITY_LINK_CHANGE) {
1341 velocity_print_link_status(vptr);
1342 if (!(vptr->mii_status & VELOCITY_LINK_FAIL))
1343 netif_wake_queue(vptr->dev);
1346 enable_flow_control_ability(vptr);
1348 mac_clear_isr(regs);
1349 writel(CR0_STOP, ®s->CR0Clr);
1350 writel((CR0_DPOLL | CR0_TXON | CR0_RXON | CR0_STRT),
1355 case VELOCITY_INIT_COLD:
1360 velocity_soft_reset(vptr);
1363 mac_eeprom_reload(regs);
1364 for (i = 0; i < 6; i++)
1365 writeb(vptr->dev->dev_addr[i], &(regs->PAR[i]));
1368 * clear Pre_ACPI bit.
1370 BYTE_REG_BITS_OFF(CFGA_PACPI, &(regs->CFGA));
1371 mac_set_rx_thresh(regs, vptr->options.rx_thresh);
1372 mac_set_dma_length(regs, vptr->options.DMA_length);
1374 writeb(WOLCFG_SAM | WOLCFG_SAB, ®s->WOLCFGSet);
1376 * Back off algorithm use original IEEE standard
1378 BYTE_REG_BITS_SET(CFGB_OFSET, (CFGB_CRANDOM | CFGB_CAP | CFGB_MBA | CFGB_BAKOPT), ®s->CFGB);
1383 velocity_init_cam_filter(vptr);
1386 * Set packet filter: Receive directed and broadcast address
1388 velocity_set_multi(vptr->dev);
1391 * Enable MII auto-polling
1393 enable_mii_autopoll(regs);
1395 setup_adaptive_interrupts(vptr);
1397 writel(vptr->rx.pool_dma, ®s->RDBaseLo);
1398 writew(vptr->options.numrx - 1, ®s->RDCSize);
1399 mac_rx_queue_run(regs);
1400 mac_rx_queue_wake(regs);
1402 writew(vptr->options.numtx - 1, ®s->TDCSize);
1404 for (i = 0; i < vptr->tx.numq; i++) {
1405 writel(vptr->tx.pool_dma[i], ®s->TDBaseLo[i]);
1406 mac_tx_queue_run(regs, i);
1409 init_flow_control_register(vptr);
1411 writel(CR0_STOP, ®s->CR0Clr);
1412 writel((CR0_DPOLL | CR0_TXON | CR0_RXON | CR0_STRT), ®s->CR0Set);
1414 mii_status = velocity_get_opt_media_mode(vptr);
1415 netif_stop_queue(vptr->dev);
1417 mii_init(vptr, mii_status);
1419 if (velocity_set_media_mode(vptr, mii_status) != VELOCITY_LINK_CHANGE) {
1420 velocity_print_link_status(vptr);
1421 if (!(vptr->mii_status & VELOCITY_LINK_FAIL))
1422 netif_wake_queue(vptr->dev);
1425 enable_flow_control_ability(vptr);
1426 mac_hw_mibs_init(regs);
1427 mac_write_int_mask(vptr->int_mask, regs);
1428 mac_clear_isr(regs);
1433 static void velocity_give_many_rx_descs(struct velocity_info *vptr)
1435 struct mac_regs __iomem *regs = vptr->mac_regs;
1436 int avail, dirty, unusable;
1439 * RD number must be equal to 4X per hardware spec
1440 * (programming guide rev 1.20, p.13)
1442 if (vptr->rx.filled < 4)
1447 unusable = vptr->rx.filled & 0x0003;
1448 dirty = vptr->rx.dirty - unusable;
1449 for (avail = vptr->rx.filled & 0xfffc; avail; avail--) {
1450 dirty = (dirty > 0) ? dirty - 1 : vptr->options.numrx - 1;
1451 vptr->rx.ring[dirty].rdesc0.len |= OWNED_BY_NIC;
1454 writew(vptr->rx.filled & 0xfffc, ®s->RBRDU);
1455 vptr->rx.filled = unusable;
1459 * velocity_init_dma_rings - set up DMA rings
1460 * @vptr: Velocity to set up
1462 * Allocate PCI mapped DMA rings for the receive and transmit layer
1465 static int velocity_init_dma_rings(struct velocity_info *vptr)
1467 struct velocity_opt *opt = &vptr->options;
1468 const unsigned int rx_ring_size = opt->numrx * sizeof(struct rx_desc);
1469 const unsigned int tx_ring_size = opt->numtx * sizeof(struct tx_desc);
1470 struct pci_dev *pdev = vptr->pdev;
1471 dma_addr_t pool_dma;
1476 * Allocate all RD/TD rings a single pool.
1478 * pci_alloc_consistent() fulfills the requirement for 64 bytes
1481 pool = pci_alloc_consistent(pdev, tx_ring_size * vptr->tx.numq +
1482 rx_ring_size, &pool_dma);
1484 dev_err(&pdev->dev, "%s : DMA memory allocation failed.\n",
1489 vptr->rx.ring = pool;
1490 vptr->rx.pool_dma = pool_dma;
1492 pool += rx_ring_size;
1493 pool_dma += rx_ring_size;
1495 for (i = 0; i < vptr->tx.numq; i++) {
1496 vptr->tx.rings[i] = pool;
1497 vptr->tx.pool_dma[i] = pool_dma;
1498 pool += tx_ring_size;
1499 pool_dma += tx_ring_size;
1505 static void velocity_set_rxbufsize(struct velocity_info *vptr, int mtu)
1507 vptr->rx.buf_sz = (mtu <= ETH_DATA_LEN) ? PKT_BUF_SZ : mtu + 32;
1511 * velocity_alloc_rx_buf - allocate aligned receive buffer
1515 * Allocate a new full sized buffer for the reception of a frame and
1516 * map it into PCI space for the hardware to use. The hardware
1517 * requires *64* byte alignment of the buffer which makes life
1518 * less fun than would be ideal.
1520 static int velocity_alloc_rx_buf(struct velocity_info *vptr, int idx)
1522 struct rx_desc *rd = &(vptr->rx.ring[idx]);
1523 struct velocity_rd_info *rd_info = &(vptr->rx.info[idx]);
1525 rd_info->skb = dev_alloc_skb(vptr->rx.buf_sz + 64);
1526 if (rd_info->skb == NULL)
1530 * Do the gymnastics to get the buffer head for data at
1533 skb_reserve(rd_info->skb,
1534 64 - ((unsigned long) rd_info->skb->data & 63));
1535 rd_info->skb_dma = pci_map_single(vptr->pdev, rd_info->skb->data,
1536 vptr->rx.buf_sz, PCI_DMA_FROMDEVICE);
1539 * Fill in the descriptor to match
1542 *((u32 *) & (rd->rdesc0)) = 0;
1543 rd->size = cpu_to_le16(vptr->rx.buf_sz) | RX_INTEN;
1544 rd->pa_low = cpu_to_le32(rd_info->skb_dma);
1550 static int velocity_rx_refill(struct velocity_info *vptr)
1552 int dirty = vptr->rx.dirty, done = 0;
1555 struct rx_desc *rd = vptr->rx.ring + dirty;
1557 /* Fine for an all zero Rx desc at init time as well */
1558 if (rd->rdesc0.len & OWNED_BY_NIC)
1561 if (!vptr->rx.info[dirty].skb) {
1562 if (velocity_alloc_rx_buf(vptr, dirty) < 0)
1566 dirty = (dirty < vptr->options.numrx - 1) ? dirty + 1 : 0;
1567 } while (dirty != vptr->rx.curr);
1570 vptr->rx.dirty = dirty;
1571 vptr->rx.filled += done;
1578 * velocity_free_rd_ring - free receive ring
1579 * @vptr: velocity to clean up
1581 * Free the receive buffers for each ring slot and any
1582 * attached socket buffers that need to go away.
1584 static void velocity_free_rd_ring(struct velocity_info *vptr)
1588 if (vptr->rx.info == NULL)
1591 for (i = 0; i < vptr->options.numrx; i++) {
1592 struct velocity_rd_info *rd_info = &(vptr->rx.info[i]);
1593 struct rx_desc *rd = vptr->rx.ring + i;
1595 memset(rd, 0, sizeof(*rd));
1599 pci_unmap_single(vptr->pdev, rd_info->skb_dma, vptr->rx.buf_sz,
1600 PCI_DMA_FROMDEVICE);
1601 rd_info->skb_dma = 0;
1603 dev_kfree_skb(rd_info->skb);
1604 rd_info->skb = NULL;
1607 kfree(vptr->rx.info);
1608 vptr->rx.info = NULL;
1614 * velocity_init_rd_ring - set up receive ring
1615 * @vptr: velocity to configure
1617 * Allocate and set up the receive buffers for each ring slot and
1618 * assign them to the network adapter.
1620 static int velocity_init_rd_ring(struct velocity_info *vptr)
1624 vptr->rx.info = kcalloc(vptr->options.numrx,
1625 sizeof(struct velocity_rd_info), GFP_KERNEL);
1629 velocity_init_rx_ring_indexes(vptr);
1631 if (velocity_rx_refill(vptr) != vptr->options.numrx) {
1632 VELOCITY_PRT(MSG_LEVEL_ERR, KERN_ERR
1633 "%s: failed to allocate RX buffer.\n", vptr->dev->name);
1634 velocity_free_rd_ring(vptr);
1644 * velocity_init_td_ring - set up transmit ring
1647 * Set up the transmit ring and chain the ring pointers together.
1648 * Returns zero on success or a negative posix errno code for
1651 static int velocity_init_td_ring(struct velocity_info *vptr)
1656 /* Init the TD ring entries */
1657 for (j = 0; j < vptr->tx.numq; j++) {
1658 curr = vptr->tx.pool_dma[j];
1660 vptr->tx.infos[j] = kcalloc(vptr->options.numtx,
1661 sizeof(struct velocity_td_info),
1663 if (!vptr->tx.infos[j]) {
1665 kfree(vptr->tx.infos[j]);
1669 vptr->tx.tail[j] = vptr->tx.curr[j] = vptr->tx.used[j] = 0;
1675 * velocity_free_dma_rings - free PCI ring pointers
1676 * @vptr: Velocity to free from
1678 * Clean up the PCI ring buffers allocated to this velocity.
1680 static void velocity_free_dma_rings(struct velocity_info *vptr)
1682 const int size = vptr->options.numrx * sizeof(struct rx_desc) +
1683 vptr->options.numtx * sizeof(struct tx_desc) * vptr->tx.numq;
1685 pci_free_consistent(vptr->pdev, size, vptr->rx.ring, vptr->rx.pool_dma);
1689 static int velocity_init_rings(struct velocity_info *vptr, int mtu)
1693 velocity_set_rxbufsize(vptr, mtu);
1695 ret = velocity_init_dma_rings(vptr);
1699 ret = velocity_init_rd_ring(vptr);
1701 goto err_free_dma_rings_0;
1703 ret = velocity_init_td_ring(vptr);
1705 goto err_free_rd_ring_1;
1710 velocity_free_rd_ring(vptr);
1711 err_free_dma_rings_0:
1712 velocity_free_dma_rings(vptr);
1717 * velocity_free_tx_buf - free transmit buffer
1721 * Release an transmit buffer. If the buffer was preallocated then
1722 * recycle it, if not then unmap the buffer.
1724 static void velocity_free_tx_buf(struct velocity_info *vptr, struct velocity_td_info *tdinfo)
1726 struct sk_buff *skb = tdinfo->skb;
1731 * Don't unmap the pre-allocated tx_bufs
1733 if (tdinfo->skb_dma) {
1735 pktlen = max_t(unsigned int, skb->len, ETH_ZLEN);
1736 for (i = 0; i < tdinfo->nskb_dma; i++) {
1737 pci_unmap_single(vptr->pdev, tdinfo->skb_dma[i], pktlen, PCI_DMA_TODEVICE);
1738 tdinfo->skb_dma[i] = 0;
1741 dev_kfree_skb_irq(skb);
1747 * FIXME: could we merge this with velocity_free_tx_buf ?
1749 static void velocity_free_td_ring_entry(struct velocity_info *vptr,
1752 struct velocity_td_info *td_info = &(vptr->tx.infos[q][n]);
1755 if (td_info == NULL)
1759 for (i = 0; i < td_info->nskb_dma; i++) {
1760 if (td_info->skb_dma[i]) {
1761 pci_unmap_single(vptr->pdev, td_info->skb_dma[i],
1762 td_info->skb->len, PCI_DMA_TODEVICE);
1763 td_info->skb_dma[i] = 0;
1766 dev_kfree_skb(td_info->skb);
1767 td_info->skb = NULL;
1772 * velocity_free_td_ring - free td ring
1775 * Free up the transmit ring for this particular velocity adapter.
1776 * We free the ring contents but not the ring itself.
1778 static void velocity_free_td_ring(struct velocity_info *vptr)
1782 for (j = 0; j < vptr->tx.numq; j++) {
1783 if (vptr->tx.infos[j] == NULL)
1785 for (i = 0; i < vptr->options.numtx; i++)
1786 velocity_free_td_ring_entry(vptr, j, i);
1788 kfree(vptr->tx.infos[j]);
1789 vptr->tx.infos[j] = NULL;
1794 static void velocity_free_rings(struct velocity_info *vptr)
1796 velocity_free_td_ring(vptr);
1797 velocity_free_rd_ring(vptr);
1798 velocity_free_dma_rings(vptr);
1802 * velocity_error - handle error from controller
1804 * @status: card status
1806 * Process an error report from the hardware and attempt to recover
1807 * the card itself. At the moment we cannot recover from some
1808 * theoretically impossible errors but this could be fixed using
1809 * the pci_device_failed logic to bounce the hardware
1812 static void velocity_error(struct velocity_info *vptr, int status)
1815 if (status & ISR_TXSTLI) {
1816 struct mac_regs __iomem *regs = vptr->mac_regs;
1818 printk(KERN_ERR "TD structure error TDindex=%hx\n", readw(®s->TDIdx[0]));
1819 BYTE_REG_BITS_ON(TXESR_TDSTR, ®s->TXESR);
1820 writew(TRDCSR_RUN, ®s->TDCSRClr);
1821 netif_stop_queue(vptr->dev);
1823 /* FIXME: port over the pci_device_failed code and use it
1827 if (status & ISR_SRCI) {
1828 struct mac_regs __iomem *regs = vptr->mac_regs;
1831 if (vptr->options.spd_dpx == SPD_DPX_AUTO) {
1832 vptr->mii_status = check_connection_type(regs);
1835 * If it is a 3119, disable frame bursting in
1836 * halfduplex mode and enable it in fullduplex
1839 if (vptr->rev_id < REV_ID_VT3216_A0) {
1840 if (vptr->mii_status & VELOCITY_DUPLEX_FULL)
1841 BYTE_REG_BITS_ON(TCR_TB2BDIS, ®s->TCR);
1843 BYTE_REG_BITS_OFF(TCR_TB2BDIS, ®s->TCR);
1846 * Only enable CD heart beat counter in 10HD mode
1848 if (!(vptr->mii_status & VELOCITY_DUPLEX_FULL) && (vptr->mii_status & VELOCITY_SPEED_10))
1849 BYTE_REG_BITS_OFF(TESTCFG_HBDIS, ®s->TESTCFG);
1851 BYTE_REG_BITS_ON(TESTCFG_HBDIS, ®s->TESTCFG);
1853 setup_queue_timers(vptr);
1856 * Get link status from PHYSR0
1858 linked = readb(®s->PHYSR0) & PHYSR0_LINKGD;
1861 vptr->mii_status &= ~VELOCITY_LINK_FAIL;
1862 netif_carrier_on(vptr->dev);
1864 vptr->mii_status |= VELOCITY_LINK_FAIL;
1865 netif_carrier_off(vptr->dev);
1868 velocity_print_link_status(vptr);
1869 enable_flow_control_ability(vptr);
1872 * Re-enable auto-polling because SRCI will disable
1876 enable_mii_autopoll(regs);
1878 if (vptr->mii_status & VELOCITY_LINK_FAIL)
1879 netif_stop_queue(vptr->dev);
1881 netif_wake_queue(vptr->dev);
1884 if (status & ISR_MIBFI)
1885 velocity_update_hw_mibs(vptr);
1886 if (status & ISR_LSTEI)
1887 mac_rx_queue_wake(vptr->mac_regs);
1891 * tx_srv - transmit interrupt service
1895 * Scan the queues looking for transmitted packets that
1896 * we can complete and clean up. Update any statistics as
1899 static int velocity_tx_srv(struct velocity_info *vptr, u32 status)
1906 struct velocity_td_info *tdinfo;
1907 struct net_device_stats *stats = &vptr->dev->stats;
1909 for (qnum = 0; qnum < vptr->tx.numq; qnum++) {
1910 for (idx = vptr->tx.tail[qnum]; vptr->tx.used[qnum] > 0;
1911 idx = (idx + 1) % vptr->options.numtx) {
1916 td = &(vptr->tx.rings[qnum][idx]);
1917 tdinfo = &(vptr->tx.infos[qnum][idx]);
1919 if (td->tdesc0.len & OWNED_BY_NIC)
1925 if (td->tdesc0.TSR & TSR0_TERR) {
1927 stats->tx_dropped++;
1928 if (td->tdesc0.TSR & TSR0_CDH)
1929 stats->tx_heartbeat_errors++;
1930 if (td->tdesc0.TSR & TSR0_CRS)
1931 stats->tx_carrier_errors++;
1932 if (td->tdesc0.TSR & TSR0_ABT)
1933 stats->tx_aborted_errors++;
1934 if (td->tdesc0.TSR & TSR0_OWC)
1935 stats->tx_window_errors++;
1937 stats->tx_packets++;
1938 stats->tx_bytes += tdinfo->skb->len;
1940 velocity_free_tx_buf(vptr, tdinfo);
1941 vptr->tx.used[qnum]--;
1943 vptr->tx.tail[qnum] = idx;
1945 if (AVAIL_TD(vptr, qnum) < 1)
1949 * Look to see if we should kick the transmit network
1950 * layer for more work.
1952 if (netif_queue_stopped(vptr->dev) && (full == 0)
1953 && (!(vptr->mii_status & VELOCITY_LINK_FAIL))) {
1954 netif_wake_queue(vptr->dev);
1960 * velocity_rx_csum - checksum process
1961 * @rd: receive packet descriptor
1962 * @skb: network layer packet buffer
1964 * Process the status bits for the received packet and determine
1965 * if the checksum was computed and verified by the hardware
1967 static inline void velocity_rx_csum(struct rx_desc *rd, struct sk_buff *skb)
1969 skb->ip_summed = CHECKSUM_NONE;
1971 if (rd->rdesc1.CSM & CSM_IPKT) {
1972 if (rd->rdesc1.CSM & CSM_IPOK) {
1973 if ((rd->rdesc1.CSM & CSM_TCPKT) ||
1974 (rd->rdesc1.CSM & CSM_UDPKT)) {
1975 if (!(rd->rdesc1.CSM & CSM_TUPOK))
1978 skb->ip_summed = CHECKSUM_UNNECESSARY;
1984 * velocity_rx_copy - in place Rx copy for small packets
1985 * @rx_skb: network layer packet buffer candidate
1986 * @pkt_size: received data size
1987 * @rd: receive packet descriptor
1988 * @dev: network device
1990 * Replace the current skb that is scheduled for Rx processing by a
1991 * shorter, immediatly allocated skb, if the received packet is small
1992 * enough. This function returns a negative value if the received
1993 * packet is too big or if memory is exhausted.
1995 static int velocity_rx_copy(struct sk_buff **rx_skb, int pkt_size,
1996 struct velocity_info *vptr)
1999 if (pkt_size < rx_copybreak) {
2000 struct sk_buff *new_skb;
2002 new_skb = netdev_alloc_skb_ip_align(vptr->dev, pkt_size);
2004 new_skb->ip_summed = rx_skb[0]->ip_summed;
2005 skb_copy_from_linear_data(*rx_skb, new_skb->data, pkt_size);
2015 * velocity_iph_realign - IP header alignment
2016 * @vptr: velocity we are handling
2017 * @skb: network layer packet buffer
2018 * @pkt_size: received data size
2020 * Align IP header on a 2 bytes boundary. This behavior can be
2021 * configured by the user.
2023 static inline void velocity_iph_realign(struct velocity_info *vptr,
2024 struct sk_buff *skb, int pkt_size)
2026 if (vptr->flags & VELOCITY_FLAGS_IP_ALIGN) {
2027 memmove(skb->data + 2, skb->data, pkt_size);
2028 skb_reserve(skb, 2);
2034 * velocity_receive_frame - received packet processor
2035 * @vptr: velocity we are handling
2038 * A packet has arrived. We process the packet and if appropriate
2039 * pass the frame up the network stack
2041 static int velocity_receive_frame(struct velocity_info *vptr, int idx)
2043 void (*pci_action)(struct pci_dev *, dma_addr_t, size_t, int);
2044 struct net_device_stats *stats = &vptr->dev->stats;
2045 struct velocity_rd_info *rd_info = &(vptr->rx.info[idx]);
2046 struct rx_desc *rd = &(vptr->rx.ring[idx]);
2047 int pkt_len = le16_to_cpu(rd->rdesc0.len) & 0x3fff;
2048 struct sk_buff *skb;
2050 if (rd->rdesc0.RSR & (RSR_STP | RSR_EDP)) {
2051 VELOCITY_PRT(MSG_LEVEL_VERBOSE, KERN_ERR " %s : the received frame span multple RDs.\n", vptr->dev->name);
2052 stats->rx_length_errors++;
2056 if (rd->rdesc0.RSR & RSR_MAR)
2061 pci_dma_sync_single_for_cpu(vptr->pdev, rd_info->skb_dma,
2062 vptr->rx.buf_sz, PCI_DMA_FROMDEVICE);
2065 * Drop frame not meeting IEEE 802.3
2068 if (vptr->flags & VELOCITY_FLAGS_VAL_PKT_LEN) {
2069 if (rd->rdesc0.RSR & RSR_RL) {
2070 stats->rx_length_errors++;
2075 pci_action = pci_dma_sync_single_for_device;
2077 velocity_rx_csum(rd, skb);
2079 if (velocity_rx_copy(&skb, pkt_len, vptr) < 0) {
2080 velocity_iph_realign(vptr, skb, pkt_len);
2081 pci_action = pci_unmap_single;
2082 rd_info->skb = NULL;
2085 pci_action(vptr->pdev, rd_info->skb_dma, vptr->rx.buf_sz,
2086 PCI_DMA_FROMDEVICE);
2088 skb_put(skb, pkt_len - 4);
2089 skb->protocol = eth_type_trans(skb, vptr->dev);
2091 if (vptr->vlgrp && (rd->rdesc0.RSR & RSR_DETAG)) {
2092 vlan_hwaccel_rx(skb, vptr->vlgrp,
2093 swab16(le16_to_cpu(rd->rdesc1.PQTAG)));
2097 stats->rx_bytes += pkt_len;
2104 * velocity_rx_srv - service RX interrupt
2106 * @status: adapter status (unused)
2108 * Walk the receive ring of the velocity adapter and remove
2109 * any received packets from the receive queue. Hand the ring
2110 * slots back to the adapter for reuse.
2112 static int velocity_rx_srv(struct velocity_info *vptr, int status)
2114 struct net_device_stats *stats = &vptr->dev->stats;
2115 int rd_curr = vptr->rx.curr;
2119 struct rx_desc *rd = vptr->rx.ring + rd_curr;
2121 if (!vptr->rx.info[rd_curr].skb)
2124 if (rd->rdesc0.len & OWNED_BY_NIC)
2130 * Don't drop CE or RL error frame although RXOK is off
2132 if (rd->rdesc0.RSR & (RSR_RXOK | RSR_CE | RSR_RL)) {
2133 if (velocity_receive_frame(vptr, rd_curr) < 0)
2134 stats->rx_dropped++;
2136 if (rd->rdesc0.RSR & RSR_CRC)
2137 stats->rx_crc_errors++;
2138 if (rd->rdesc0.RSR & RSR_FAE)
2139 stats->rx_frame_errors++;
2141 stats->rx_dropped++;
2144 rd->size |= RX_INTEN;
2147 if (rd_curr >= vptr->options.numrx)
2149 } while (++works <= 15);
2151 vptr->rx.curr = rd_curr;
2153 if ((works > 0) && (velocity_rx_refill(vptr) > 0))
2154 velocity_give_many_rx_descs(vptr);
2162 * velocity_intr - interrupt callback
2163 * @irq: interrupt number
2164 * @dev_instance: interrupting device
2166 * Called whenever an interrupt is generated by the velocity
2167 * adapter IRQ line. We may not be the source of the interrupt
2168 * and need to identify initially if we are, and if not exit as
2169 * efficiently as possible.
2171 static irqreturn_t velocity_intr(int irq, void *dev_instance)
2173 struct net_device *dev = dev_instance;
2174 struct velocity_info *vptr = netdev_priv(dev);
2179 spin_lock(&vptr->lock);
2180 isr_status = mac_read_isr(vptr->mac_regs);
2183 if (isr_status == 0) {
2184 spin_unlock(&vptr->lock);
2188 mac_disable_int(vptr->mac_regs);
2191 * Keep processing the ISR until we have completed
2192 * processing and the isr_status becomes zero
2195 while (isr_status != 0) {
2196 mac_write_isr(vptr->mac_regs, isr_status);
2197 if (isr_status & (~(ISR_PRXI | ISR_PPRXI | ISR_PTXI | ISR_PPTXI)))
2198 velocity_error(vptr, isr_status);
2199 if (isr_status & (ISR_PRXI | ISR_PPRXI))
2200 max_count += velocity_rx_srv(vptr, isr_status);
2201 if (isr_status & (ISR_PTXI | ISR_PPTXI))
2202 max_count += velocity_tx_srv(vptr, isr_status);
2203 isr_status = mac_read_isr(vptr->mac_regs);
2204 if (max_count > vptr->options.int_works) {
2205 printk(KERN_WARNING "%s: excessive work at interrupt.\n",
2210 spin_unlock(&vptr->lock);
2211 mac_enable_int(vptr->mac_regs);
2217 * velocity_open - interface activation callback
2218 * @dev: network layer device to open
2220 * Called when the network layer brings the interface up. Returns
2221 * a negative posix error code on failure, or zero on success.
2223 * All the ring allocation and set up is done on open for this
2224 * adapter to minimise memory usage when inactive
2226 static int velocity_open(struct net_device *dev)
2228 struct velocity_info *vptr = netdev_priv(dev);
2231 ret = velocity_init_rings(vptr, dev->mtu);
2235 /* Ensure chip is running */
2236 pci_set_power_state(vptr->pdev, PCI_D0);
2238 velocity_give_many_rx_descs(vptr);
2240 velocity_init_registers(vptr, VELOCITY_INIT_COLD);
2242 ret = request_irq(vptr->pdev->irq, velocity_intr, IRQF_SHARED,
2245 /* Power down the chip */
2246 pci_set_power_state(vptr->pdev, PCI_D3hot);
2247 velocity_free_rings(vptr);
2251 mac_enable_int(vptr->mac_regs);
2252 netif_start_queue(dev);
2253 vptr->flags |= VELOCITY_FLAGS_OPENED;
2259 * velocity_shutdown - shut down the chip
2260 * @vptr: velocity to deactivate
2262 * Shuts down the internal operations of the velocity and
2263 * disables interrupts, autopolling, transmit and receive
2265 static void velocity_shutdown(struct velocity_info *vptr)
2267 struct mac_regs __iomem *regs = vptr->mac_regs;
2268 mac_disable_int(regs);
2269 writel(CR0_STOP, ®s->CR0Set);
2270 writew(0xFFFF, ®s->TDCSRClr);
2271 writeb(0xFF, ®s->RDCSRClr);
2272 safe_disable_mii_autopoll(regs);
2273 mac_clear_isr(regs);
2277 * velocity_change_mtu - MTU change callback
2278 * @dev: network device
2279 * @new_mtu: desired MTU
2281 * Handle requests from the networking layer for MTU change on
2282 * this interface. It gets called on a change by the network layer.
2283 * Return zero for success or negative posix error code.
2285 static int velocity_change_mtu(struct net_device *dev, int new_mtu)
2287 struct velocity_info *vptr = netdev_priv(dev);
2290 if ((new_mtu < VELOCITY_MIN_MTU) || new_mtu > (VELOCITY_MAX_MTU)) {
2291 VELOCITY_PRT(MSG_LEVEL_ERR, KERN_NOTICE "%s: Invalid MTU.\n",
2297 if (!netif_running(dev)) {
2302 if (dev->mtu != new_mtu) {
2303 struct velocity_info *tmp_vptr;
2304 unsigned long flags;
2308 tmp_vptr = kzalloc(sizeof(*tmp_vptr), GFP_KERNEL);
2314 tmp_vptr->dev = dev;
2315 tmp_vptr->pdev = vptr->pdev;
2316 tmp_vptr->options = vptr->options;
2317 tmp_vptr->tx.numq = vptr->tx.numq;
2319 ret = velocity_init_rings(tmp_vptr, new_mtu);
2321 goto out_free_tmp_vptr_1;
2323 spin_lock_irqsave(&vptr->lock, flags);
2325 netif_stop_queue(dev);
2326 velocity_shutdown(vptr);
2331 vptr->rx = tmp_vptr->rx;
2332 vptr->tx = tmp_vptr->tx;
2339 velocity_give_many_rx_descs(vptr);
2341 velocity_init_registers(vptr, VELOCITY_INIT_COLD);
2343 mac_enable_int(vptr->mac_regs);
2344 netif_start_queue(dev);
2346 spin_unlock_irqrestore(&vptr->lock, flags);
2348 velocity_free_rings(tmp_vptr);
2350 out_free_tmp_vptr_1:
2358 * velocity_mii_ioctl - MII ioctl handler
2359 * @dev: network device
2360 * @ifr: the ifreq block for the ioctl
2363 * Process MII requests made via ioctl from the network layer. These
2364 * are used by tools like kudzu to interrogate the link state of the
2367 static int velocity_mii_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
2369 struct velocity_info *vptr = netdev_priv(dev);
2370 struct mac_regs __iomem *regs = vptr->mac_regs;
2371 unsigned long flags;
2372 struct mii_ioctl_data *miidata = if_mii(ifr);
2377 miidata->phy_id = readb(®s->MIIADR) & 0x1f;
2380 if (velocity_mii_read(vptr->mac_regs, miidata->reg_num & 0x1f, &(miidata->val_out)) < 0)
2384 spin_lock_irqsave(&vptr->lock, flags);
2385 err = velocity_mii_write(vptr->mac_regs, miidata->reg_num & 0x1f, miidata->val_in);
2386 spin_unlock_irqrestore(&vptr->lock, flags);
2387 check_connection_type(vptr->mac_regs);
2399 * velocity_ioctl - ioctl entry point
2400 * @dev: network device
2401 * @rq: interface request ioctl
2402 * @cmd: command code
2404 * Called when the user issues an ioctl request to the network
2405 * device in question. The velocity interface supports MII.
2407 static int velocity_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2409 struct velocity_info *vptr = netdev_priv(dev);
2412 /* If we are asked for information and the device is power
2413 saving then we need to bring the device back up to talk to it */
2415 if (!netif_running(dev))
2416 pci_set_power_state(vptr->pdev, PCI_D0);
2419 case SIOCGMIIPHY: /* Get address of MII PHY in use. */
2420 case SIOCGMIIREG: /* Read MII PHY register. */
2421 case SIOCSMIIREG: /* Write to MII PHY register. */
2422 ret = velocity_mii_ioctl(dev, rq, cmd);
2428 if (!netif_running(dev))
2429 pci_set_power_state(vptr->pdev, PCI_D3hot);
2436 * velocity_get_status - statistics callback
2437 * @dev: network device
2439 * Callback from the network layer to allow driver statistics
2440 * to be resynchronized with hardware collected state. In the
2441 * case of the velocity we need to pull the MIB counters from
2442 * the hardware into the counters before letting the network
2443 * layer display them.
2445 static struct net_device_stats *velocity_get_stats(struct net_device *dev)
2447 struct velocity_info *vptr = netdev_priv(dev);
2449 /* If the hardware is down, don't touch MII */
2450 if (!netif_running(dev))
2453 spin_lock_irq(&vptr->lock);
2454 velocity_update_hw_mibs(vptr);
2455 spin_unlock_irq(&vptr->lock);
2457 dev->stats.rx_packets = vptr->mib_counter[HW_MIB_ifRxAllPkts];
2458 dev->stats.rx_errors = vptr->mib_counter[HW_MIB_ifRxErrorPkts];
2459 dev->stats.rx_length_errors = vptr->mib_counter[HW_MIB_ifInRangeLengthErrors];
2461 // unsigned long rx_dropped; /* no space in linux buffers */
2462 dev->stats.collisions = vptr->mib_counter[HW_MIB_ifTxEtherCollisions];
2463 /* detailed rx_errors: */
2464 // unsigned long rx_length_errors;
2465 // unsigned long rx_over_errors; /* receiver ring buff overflow */
2466 dev->stats.rx_crc_errors = vptr->mib_counter[HW_MIB_ifRxPktCRCE];
2467 // unsigned long rx_frame_errors; /* recv'd frame alignment error */
2468 // unsigned long rx_fifo_errors; /* recv'r fifo overrun */
2469 // unsigned long rx_missed_errors; /* receiver missed packet */
2471 /* detailed tx_errors */
2472 // unsigned long tx_fifo_errors;
2478 * velocity_close - close adapter callback
2479 * @dev: network device
2481 * Callback from the network layer when the velocity is being
2482 * deactivated by the network layer
2484 static int velocity_close(struct net_device *dev)
2486 struct velocity_info *vptr = netdev_priv(dev);
2488 netif_stop_queue(dev);
2489 velocity_shutdown(vptr);
2491 if (vptr->flags & VELOCITY_FLAGS_WOL_ENABLED)
2492 velocity_get_ip(vptr);
2494 free_irq(dev->irq, dev);
2496 /* Power down the chip */
2497 pci_set_power_state(vptr->pdev, PCI_D3hot);
2499 velocity_free_rings(vptr);
2501 vptr->flags &= (~VELOCITY_FLAGS_OPENED);
2506 * velocity_xmit - transmit packet callback
2507 * @skb: buffer to transmit
2508 * @dev: network device
2510 * Called by the networ layer to request a packet is queued to
2511 * the velocity. Returns zero on success.
2513 static netdev_tx_t velocity_xmit(struct sk_buff *skb,
2514 struct net_device *dev)
2516 struct velocity_info *vptr = netdev_priv(dev);
2518 struct tx_desc *td_ptr;
2519 struct velocity_td_info *tdinfo;
2520 unsigned long flags;
2525 if (skb_padto(skb, ETH_ZLEN))
2527 pktlen = max_t(unsigned int, skb->len, ETH_ZLEN);
2529 len = cpu_to_le16(pktlen);
2531 spin_lock_irqsave(&vptr->lock, flags);
2533 index = vptr->tx.curr[qnum];
2534 td_ptr = &(vptr->tx.rings[qnum][index]);
2535 tdinfo = &(vptr->tx.infos[qnum][index]);
2537 td_ptr->tdesc1.TCR = TCR0_TIC;
2538 td_ptr->td_buf[0].size &= ~TD_QUEUE;
2541 * Map the linear network buffer into PCI space and
2542 * add it to the transmit ring.
2545 tdinfo->skb_dma[0] = pci_map_single(vptr->pdev, skb->data, pktlen, PCI_DMA_TODEVICE);
2546 td_ptr->tdesc0.len = len;
2547 td_ptr->td_buf[0].pa_low = cpu_to_le32(tdinfo->skb_dma[0]);
2548 td_ptr->td_buf[0].pa_high = 0;
2549 td_ptr->td_buf[0].size = len;
2550 tdinfo->nskb_dma = 1;
2552 td_ptr->tdesc1.cmd = TCPLS_NORMAL + (tdinfo->nskb_dma + 1) * 16;
2554 if (vptr->vlgrp && vlan_tx_tag_present(skb)) {
2555 td_ptr->tdesc1.vlan = cpu_to_le16(vlan_tx_tag_get(skb));
2556 td_ptr->tdesc1.TCR |= TCR0_VETAG;
2560 * Handle hardware checksum
2562 if ((vptr->flags & VELOCITY_FLAGS_TX_CSUM)
2563 && (skb->ip_summed == CHECKSUM_PARTIAL)) {
2564 const struct iphdr *ip = ip_hdr(skb);
2565 if (ip->protocol == IPPROTO_TCP)
2566 td_ptr->tdesc1.TCR |= TCR0_TCPCK;
2567 else if (ip->protocol == IPPROTO_UDP)
2568 td_ptr->tdesc1.TCR |= (TCR0_UDPCK);
2569 td_ptr->tdesc1.TCR |= TCR0_IPCK;
2573 int prev = index - 1;
2576 prev = vptr->options.numtx - 1;
2577 td_ptr->tdesc0.len |= OWNED_BY_NIC;
2578 vptr->tx.used[qnum]++;
2579 vptr->tx.curr[qnum] = (index + 1) % vptr->options.numtx;
2581 if (AVAIL_TD(vptr, qnum) < 1)
2582 netif_stop_queue(dev);
2584 td_ptr = &(vptr->tx.rings[qnum][prev]);
2585 td_ptr->td_buf[0].size |= TD_QUEUE;
2586 mac_tx_queue_wake(vptr->mac_regs, qnum);
2588 dev->trans_start = jiffies;
2589 spin_unlock_irqrestore(&vptr->lock, flags);
2591 return NETDEV_TX_OK;
2595 static const struct net_device_ops velocity_netdev_ops = {
2596 .ndo_open = velocity_open,
2597 .ndo_stop = velocity_close,
2598 .ndo_start_xmit = velocity_xmit,
2599 .ndo_get_stats = velocity_get_stats,
2600 .ndo_validate_addr = eth_validate_addr,
2601 .ndo_set_mac_address = eth_mac_addr,
2602 .ndo_set_multicast_list = velocity_set_multi,
2603 .ndo_change_mtu = velocity_change_mtu,
2604 .ndo_do_ioctl = velocity_ioctl,
2605 .ndo_vlan_rx_add_vid = velocity_vlan_rx_add_vid,
2606 .ndo_vlan_rx_kill_vid = velocity_vlan_rx_kill_vid,
2607 .ndo_vlan_rx_register = velocity_vlan_rx_register,
2611 * velocity_init_info - init private data
2613 * @vptr: Velocity info
2616 * Set up the initial velocity_info struct for the device that has been
2619 static void __devinit velocity_init_info(struct pci_dev *pdev,
2620 struct velocity_info *vptr,
2621 const struct velocity_info_tbl *info)
2623 memset(vptr, 0, sizeof(struct velocity_info));
2626 vptr->chip_id = info->chip_id;
2627 vptr->tx.numq = info->txqueue;
2628 vptr->multicast_limit = MCAM_SIZE;
2629 spin_lock_init(&vptr->lock);
2633 * velocity_get_pci_info - retrieve PCI info for device
2634 * @vptr: velocity device
2635 * @pdev: PCI device it matches
2637 * Retrieve the PCI configuration space data that interests us from
2638 * the kernel PCI layer
2640 static int __devinit velocity_get_pci_info(struct velocity_info *vptr, struct pci_dev *pdev)
2642 vptr->rev_id = pdev->revision;
2644 pci_set_master(pdev);
2646 vptr->ioaddr = pci_resource_start(pdev, 0);
2647 vptr->memaddr = pci_resource_start(pdev, 1);
2649 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_IO)) {
2651 "region #0 is not an I/O resource, aborting.\n");
2655 if ((pci_resource_flags(pdev, 1) & IORESOURCE_IO)) {
2657 "region #1 is an I/O resource, aborting.\n");
2661 if (pci_resource_len(pdev, 1) < VELOCITY_IO_SIZE) {
2662 dev_err(&pdev->dev, "region #1 is too small.\n");
2671 * velocity_print_info - per driver data
2674 * Print per driver data as the kernel driver finds Velocity
2677 static void __devinit velocity_print_info(struct velocity_info *vptr)
2679 struct net_device *dev = vptr->dev;
2681 printk(KERN_INFO "%s: %s\n", dev->name, get_chip_name(vptr->chip_id));
2682 printk(KERN_INFO "%s: Ethernet Address: %2.2X:%2.2X:%2.2X:%2.2X:%2.2X:%2.2X\n",
2684 dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2],
2685 dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5]);
2688 static u32 velocity_get_link(struct net_device *dev)
2690 struct velocity_info *vptr = netdev_priv(dev);
2691 struct mac_regs __iomem *regs = vptr->mac_regs;
2692 return BYTE_REG_BITS_IS_ON(PHYSR0_LINKGD, ®s->PHYSR0) ? 1 : 0;
2697 * velocity_found1 - set up discovered velocity card
2699 * @ent: PCI device table entry that matched
2701 * Configure a discovered adapter from scratch. Return a negative
2702 * errno error code on failure paths.
2704 static int __devinit velocity_found1(struct pci_dev *pdev, const struct pci_device_id *ent)
2706 static int first = 1;
2707 struct net_device *dev;
2709 const char *drv_string;
2710 const struct velocity_info_tbl *info = &chip_info_table[ent->driver_data];
2711 struct velocity_info *vptr;
2712 struct mac_regs __iomem *regs;
2715 /* FIXME: this driver, like almost all other ethernet drivers,
2716 * can support more than MAX_UNITS.
2718 if (velocity_nics >= MAX_UNITS) {
2719 dev_notice(&pdev->dev, "already found %d NICs.\n",
2724 dev = alloc_etherdev(sizeof(struct velocity_info));
2726 dev_err(&pdev->dev, "allocate net device failed.\n");
2730 /* Chain it all together */
2732 SET_NETDEV_DEV(dev, &pdev->dev);
2733 vptr = netdev_priv(dev);
2737 printk(KERN_INFO "%s Ver. %s\n",
2738 VELOCITY_FULL_DRV_NAM, VELOCITY_VERSION);
2739 printk(KERN_INFO "Copyright (c) 2002, 2003 VIA Networking Technologies, Inc.\n");
2740 printk(KERN_INFO "Copyright (c) 2004 Red Hat Inc.\n");
2744 velocity_init_info(pdev, vptr, info);
2748 dev->irq = pdev->irq;
2750 ret = pci_enable_device(pdev);
2754 ret = velocity_get_pci_info(vptr, pdev);
2756 /* error message already printed */
2760 ret = pci_request_regions(pdev, VELOCITY_NAME);
2762 dev_err(&pdev->dev, "No PCI resources.\n");
2766 regs = ioremap(vptr->memaddr, VELOCITY_IO_SIZE);
2769 goto err_release_res;
2772 vptr->mac_regs = regs;
2774 mac_wol_reset(regs);
2776 dev->base_addr = vptr->ioaddr;
2778 for (i = 0; i < 6; i++)
2779 dev->dev_addr[i] = readb(®s->PAR[i]);
2782 drv_string = dev_driver_string(&pdev->dev);
2784 velocity_get_options(&vptr->options, velocity_nics, drv_string);
2787 * Mask out the options cannot be set to the chip
2790 vptr->options.flags &= info->flags;
2793 * Enable the chip specified capbilities
2796 vptr->flags = vptr->options.flags | (info->flags & 0xFF000000UL);
2798 vptr->wol_opts = vptr->options.wol_opts;
2799 vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
2801 vptr->phy_id = MII_GET_PHY_ID(vptr->mac_regs);
2803 dev->irq = pdev->irq;
2804 dev->netdev_ops = &velocity_netdev_ops;
2805 dev->ethtool_ops = &velocity_ethtool_ops;
2807 dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER |
2810 if (vptr->flags & VELOCITY_FLAGS_TX_CSUM)
2811 dev->features |= NETIF_F_IP_CSUM;
2813 ret = register_netdev(dev);
2817 if (!velocity_get_link(dev)) {
2818 netif_carrier_off(dev);
2819 vptr->mii_status |= VELOCITY_LINK_FAIL;
2822 velocity_print_info(vptr);
2823 pci_set_drvdata(pdev, dev);
2825 /* and leave the chip powered down */
2827 pci_set_power_state(pdev, PCI_D3hot);
2835 pci_release_regions(pdev);
2837 pci_disable_device(pdev);
2846 * wol_calc_crc - WOL CRC
2847 * @pattern: data pattern
2848 * @mask_pattern: mask
2850 * Compute the wake on lan crc hashes for the packet header
2851 * we are interested in.
2853 static u16 wol_calc_crc(int size, u8 *pattern, u8 *mask_pattern)
2859 for (i = 0; i < size; i++) {
2860 mask = mask_pattern[i];
2862 /* Skip this loop if the mask equals to zero */
2866 for (j = 0; j < 8; j++) {
2867 if ((mask & 0x01) == 0) {
2872 crc = crc_ccitt(crc, &(pattern[i * 8 + j]), 1);
2875 /* Finally, invert the result once to get the correct data */
2877 return bitrev32(crc) >> 16;
2881 * velocity_set_wol - set up for wake on lan
2882 * @vptr: velocity to set WOL status on
2884 * Set a card up for wake on lan either by unicast or by
2887 * FIXME: check static buffer is safe here
2889 static int velocity_set_wol(struct velocity_info *vptr)
2891 struct mac_regs __iomem *regs = vptr->mac_regs;
2895 static u32 mask_pattern[2][4] = {
2896 {0x00203000, 0x000003C0, 0x00000000, 0x0000000}, /* ARP */
2897 {0xfffff000, 0xffffffff, 0xffffffff, 0x000ffff} /* Magic Packet */
2900 writew(0xFFFF, ®s->WOLCRClr);
2901 writeb(WOLCFG_SAB | WOLCFG_SAM, ®s->WOLCFGSet);
2902 writew(WOLCR_MAGIC_EN, ®s->WOLCRSet);
2905 if (vptr->wol_opts & VELOCITY_WOL_PHY)
2906 writew((WOLCR_LINKON_EN|WOLCR_LINKOFF_EN), ®s->WOLCRSet);
2909 if (vptr->wol_opts & VELOCITY_WOL_UCAST)
2910 writew(WOLCR_UNICAST_EN, ®s->WOLCRSet);
2912 if (vptr->wol_opts & VELOCITY_WOL_ARP) {
2913 struct arp_packet *arp = (struct arp_packet *) buf;
2915 memset(buf, 0, sizeof(struct arp_packet) + 7);
2917 for (i = 0; i < 4; i++)
2918 writel(mask_pattern[0][i], ®s->ByteMask[0][i]);
2920 arp->type = htons(ETH_P_ARP);
2921 arp->ar_op = htons(1);
2923 memcpy(arp->ar_tip, vptr->ip_addr, 4);
2925 crc = wol_calc_crc((sizeof(struct arp_packet) + 7) / 8, buf,
2926 (u8 *) & mask_pattern[0][0]);
2928 writew(crc, ®s->PatternCRC[0]);
2929 writew(WOLCR_ARP_EN, ®s->WOLCRSet);
2932 BYTE_REG_BITS_ON(PWCFG_WOLTYPE, ®s->PWCFGSet);
2933 BYTE_REG_BITS_ON(PWCFG_LEGACY_WOLEN, ®s->PWCFGSet);
2935 writew(0x0FFF, ®s->WOLSRClr);
2937 if (vptr->mii_status & VELOCITY_AUTONEG_ENABLE) {
2938 if (PHYID_GET_PHY_ID(vptr->phy_id) == PHYID_CICADA_CS8201)
2939 MII_REG_BITS_ON(AUXCR_MDPPS, MII_REG_AUXCR, vptr->mac_regs);
2941 MII_REG_BITS_OFF(G1000CR_1000FD | G1000CR_1000, MII_REG_G1000CR, vptr->mac_regs);
2944 if (vptr->mii_status & VELOCITY_SPEED_1000)
2945 MII_REG_BITS_ON(BMCR_REAUTO, MII_REG_BMCR, vptr->mac_regs);
2947 BYTE_REG_BITS_ON(CHIPGCR_FCMODE, ®s->CHIPGCR);
2951 GCR = readb(®s->CHIPGCR);
2952 GCR = (GCR & ~CHIPGCR_FCGMII) | CHIPGCR_FCFDX;
2953 writeb(GCR, ®s->CHIPGCR);
2956 BYTE_REG_BITS_OFF(ISR_PWEI, ®s->ISR);
2957 /* Turn on SWPTAG just before entering power mode */
2958 BYTE_REG_BITS_ON(STICKHW_SWPTAG, ®s->STICKHW);
2959 /* Go to bed ..... */
2960 BYTE_REG_BITS_ON((STICKHW_DS1 | STICKHW_DS0), ®s->STICKHW);
2966 * velocity_save_context - save registers
2968 * @context: buffer for stored context
2970 * Retrieve the current configuration from the velocity hardware
2971 * and stash it in the context structure, for use by the context
2972 * restore functions. This allows us to save things we need across
2975 static void velocity_save_context(struct velocity_info *vptr, struct velocity_context *context)
2977 struct mac_regs __iomem *regs = vptr->mac_regs;
2979 u8 __iomem *ptr = (u8 __iomem *)regs;
2981 for (i = MAC_REG_PAR; i < MAC_REG_CR0_CLR; i += 4)
2982 *((u32 *) (context->mac_reg + i)) = readl(ptr + i);
2984 for (i = MAC_REG_MAR; i < MAC_REG_TDCSR_CLR; i += 4)
2985 *((u32 *) (context->mac_reg + i)) = readl(ptr + i);
2987 for (i = MAC_REG_RDBASE_LO; i < MAC_REG_FIFO_TEST0; i += 4)
2988 *((u32 *) (context->mac_reg + i)) = readl(ptr + i);
2992 static int velocity_suspend(struct pci_dev *pdev, pm_message_t state)
2994 struct net_device *dev = pci_get_drvdata(pdev);
2995 struct velocity_info *vptr = netdev_priv(dev);
2996 unsigned long flags;
2998 if (!netif_running(vptr->dev))
3001 netif_device_detach(vptr->dev);
3003 spin_lock_irqsave(&vptr->lock, flags);
3004 pci_save_state(pdev);
3006 if (vptr->flags & VELOCITY_FLAGS_WOL_ENABLED) {
3007 velocity_get_ip(vptr);
3008 velocity_save_context(vptr, &vptr->context);
3009 velocity_shutdown(vptr);
3010 velocity_set_wol(vptr);
3011 pci_enable_wake(pdev, PCI_D3hot, 1);
3012 pci_set_power_state(pdev, PCI_D3hot);
3014 velocity_save_context(vptr, &vptr->context);
3015 velocity_shutdown(vptr);
3016 pci_disable_device(pdev);
3017 pci_set_power_state(pdev, pci_choose_state(pdev, state));
3020 pci_set_power_state(pdev, pci_choose_state(pdev, state));
3022 spin_unlock_irqrestore(&vptr->lock, flags);
3027 * velocity_restore_context - restore registers
3029 * @context: buffer for stored context
3031 * Reload the register configuration from the velocity context
3032 * created by velocity_save_context.
3034 static void velocity_restore_context(struct velocity_info *vptr, struct velocity_context *context)
3036 struct mac_regs __iomem *regs = vptr->mac_regs;
3038 u8 __iomem *ptr = (u8 __iomem *)regs;
3040 for (i = MAC_REG_PAR; i < MAC_REG_CR0_SET; i += 4)
3041 writel(*((u32 *) (context->mac_reg + i)), ptr + i);
3044 for (i = MAC_REG_CR1_SET; i < MAC_REG_CR0_CLR; i++) {
3046 writeb(~(*((u8 *) (context->mac_reg + i))), ptr + i + 4);
3048 writeb(*((u8 *) (context->mac_reg + i)), ptr + i);
3051 for (i = MAC_REG_MAR; i < MAC_REG_IMR; i += 4)
3052 writel(*((u32 *) (context->mac_reg + i)), ptr + i);
3054 for (i = MAC_REG_RDBASE_LO; i < MAC_REG_FIFO_TEST0; i += 4)
3055 writel(*((u32 *) (context->mac_reg + i)), ptr + i);
3057 for (i = MAC_REG_TDCSR_SET; i <= MAC_REG_RDCSR_SET; i++)
3058 writeb(*((u8 *) (context->mac_reg + i)), ptr + i);
3061 static int velocity_resume(struct pci_dev *pdev)
3063 struct net_device *dev = pci_get_drvdata(pdev);
3064 struct velocity_info *vptr = netdev_priv(dev);
3065 unsigned long flags;
3068 if (!netif_running(vptr->dev))
3071 pci_set_power_state(pdev, PCI_D0);
3072 pci_enable_wake(pdev, 0, 0);
3073 pci_restore_state(pdev);
3075 mac_wol_reset(vptr->mac_regs);
3077 spin_lock_irqsave(&vptr->lock, flags);
3078 velocity_restore_context(vptr, &vptr->context);
3079 velocity_init_registers(vptr, VELOCITY_INIT_WOL);
3080 mac_disable_int(vptr->mac_regs);
3082 velocity_tx_srv(vptr, 0);
3084 for (i = 0; i < vptr->tx.numq; i++) {
3085 if (vptr->tx.used[i])
3086 mac_tx_queue_wake(vptr->mac_regs, i);
3089 mac_enable_int(vptr->mac_regs);
3090 spin_unlock_irqrestore(&vptr->lock, flags);
3091 netif_device_attach(vptr->dev);
3098 * Definition for our device driver. The PCI layer interface
3099 * uses this to handle all our card discover and plugging
3101 static struct pci_driver velocity_driver = {
3102 .name = VELOCITY_NAME,
3103 .id_table = velocity_id_table,
3104 .probe = velocity_found1,
3105 .remove = __devexit_p(velocity_remove1),
3107 .suspend = velocity_suspend,
3108 .resume = velocity_resume,
3114 * velocity_ethtool_up - pre hook for ethtool
3115 * @dev: network device
3117 * Called before an ethtool operation. We need to make sure the
3118 * chip is out of D3 state before we poke at it.
3120 static int velocity_ethtool_up(struct net_device *dev)
3122 struct velocity_info *vptr = netdev_priv(dev);
3123 if (!netif_running(dev))
3124 pci_set_power_state(vptr->pdev, PCI_D0);
3129 * velocity_ethtool_down - post hook for ethtool
3130 * @dev: network device
3132 * Called after an ethtool operation. Restore the chip back to D3
3133 * state if it isn't running.
3135 static void velocity_ethtool_down(struct net_device *dev)
3137 struct velocity_info *vptr = netdev_priv(dev);
3138 if (!netif_running(dev))
3139 pci_set_power_state(vptr->pdev, PCI_D3hot);
3142 static int velocity_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
3144 struct velocity_info *vptr = netdev_priv(dev);
3145 struct mac_regs __iomem *regs = vptr->mac_regs;
3147 status = check_connection_type(vptr->mac_regs);
3149 cmd->supported = SUPPORTED_TP |
3151 SUPPORTED_10baseT_Half |
3152 SUPPORTED_10baseT_Full |
3153 SUPPORTED_100baseT_Half |
3154 SUPPORTED_100baseT_Full |
3155 SUPPORTED_1000baseT_Half |
3156 SUPPORTED_1000baseT_Full;
3157 if (status & VELOCITY_SPEED_1000)
3158 cmd->speed = SPEED_1000;
3159 else if (status & VELOCITY_SPEED_100)
3160 cmd->speed = SPEED_100;
3162 cmd->speed = SPEED_10;
3163 cmd->autoneg = (status & VELOCITY_AUTONEG_ENABLE) ? AUTONEG_ENABLE : AUTONEG_DISABLE;
3164 cmd->port = PORT_TP;
3165 cmd->transceiver = XCVR_INTERNAL;
3166 cmd->phy_address = readb(®s->MIIADR) & 0x1F;
3168 if (status & VELOCITY_DUPLEX_FULL)
3169 cmd->duplex = DUPLEX_FULL;
3171 cmd->duplex = DUPLEX_HALF;
3176 static int velocity_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
3178 struct velocity_info *vptr = netdev_priv(dev);
3183 curr_status = check_connection_type(vptr->mac_regs);
3184 curr_status &= (~VELOCITY_LINK_FAIL);
3186 new_status |= ((cmd->autoneg) ? VELOCITY_AUTONEG_ENABLE : 0);
3187 new_status |= ((cmd->speed == SPEED_100) ? VELOCITY_SPEED_100 : 0);
3188 new_status |= ((cmd->speed == SPEED_10) ? VELOCITY_SPEED_10 : 0);
3189 new_status |= ((cmd->duplex == DUPLEX_FULL) ? VELOCITY_DUPLEX_FULL : 0);
3191 if ((new_status & VELOCITY_AUTONEG_ENABLE) && (new_status != (curr_status | VELOCITY_AUTONEG_ENABLE)))
3194 velocity_set_media_mode(vptr, new_status);
3199 static void velocity_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
3201 struct velocity_info *vptr = netdev_priv(dev);
3202 strcpy(info->driver, VELOCITY_NAME);
3203 strcpy(info->version, VELOCITY_VERSION);
3204 strcpy(info->bus_info, pci_name(vptr->pdev));
3207 static void velocity_ethtool_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
3209 struct velocity_info *vptr = netdev_priv(dev);
3210 wol->supported = WAKE_PHY | WAKE_MAGIC | WAKE_UCAST | WAKE_ARP;
3211 wol->wolopts |= WAKE_MAGIC;
3213 if (vptr->wol_opts & VELOCITY_WOL_PHY)
3214 wol.wolopts|=WAKE_PHY;
3216 if (vptr->wol_opts & VELOCITY_WOL_UCAST)
3217 wol->wolopts |= WAKE_UCAST;
3218 if (vptr->wol_opts & VELOCITY_WOL_ARP)
3219 wol->wolopts |= WAKE_ARP;
3220 memcpy(&wol->sopass, vptr->wol_passwd, 6);
3223 static int velocity_ethtool_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
3225 struct velocity_info *vptr = netdev_priv(dev);
3227 if (!(wol->wolopts & (WAKE_PHY | WAKE_MAGIC | WAKE_UCAST | WAKE_ARP)))
3229 vptr->wol_opts = VELOCITY_WOL_MAGIC;
3232 if (wol.wolopts & WAKE_PHY) {
3233 vptr->wol_opts|=VELOCITY_WOL_PHY;
3234 vptr->flags |=VELOCITY_FLAGS_WOL_ENABLED;
3238 if (wol->wolopts & WAKE_MAGIC) {
3239 vptr->wol_opts |= VELOCITY_WOL_MAGIC;
3240 vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
3242 if (wol->wolopts & WAKE_UCAST) {
3243 vptr->wol_opts |= VELOCITY_WOL_UCAST;
3244 vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
3246 if (wol->wolopts & WAKE_ARP) {
3247 vptr->wol_opts |= VELOCITY_WOL_ARP;
3248 vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
3250 memcpy(vptr->wol_passwd, wol->sopass, 6);
3254 static u32 velocity_get_msglevel(struct net_device *dev)
3259 static void velocity_set_msglevel(struct net_device *dev, u32 value)
3264 static int get_pending_timer_val(int val)
3266 int mult_bits = val >> 6;
3282 return (val & 0x3f) * mult;
3285 static void set_pending_timer_val(int *val, u32 us)
3291 mult = 1; /* mult with 4 */
3294 if (us >= 0x3f * 4) {
3295 mult = 2; /* mult with 16 */
3298 if (us >= 0x3f * 16) {
3299 mult = 3; /* mult with 64 */
3303 *val = (mult << 6) | ((us >> shift) & 0x3f);
3307 static int velocity_get_coalesce(struct net_device *dev,
3308 struct ethtool_coalesce *ecmd)
3310 struct velocity_info *vptr = netdev_priv(dev);
3312 ecmd->tx_max_coalesced_frames = vptr->options.tx_intsup;
3313 ecmd->rx_max_coalesced_frames = vptr->options.rx_intsup;
3315 ecmd->rx_coalesce_usecs = get_pending_timer_val(vptr->options.rxqueue_timer);
3316 ecmd->tx_coalesce_usecs = get_pending_timer_val(vptr->options.txqueue_timer);
3321 static int velocity_set_coalesce(struct net_device *dev,
3322 struct ethtool_coalesce *ecmd)
3324 struct velocity_info *vptr = netdev_priv(dev);
3325 int max_us = 0x3f * 64;
3328 if (ecmd->tx_coalesce_usecs > max_us)
3330 if (ecmd->rx_coalesce_usecs > max_us)
3333 if (ecmd->tx_max_coalesced_frames > 0xff)
3335 if (ecmd->rx_max_coalesced_frames > 0xff)
3338 vptr->options.rx_intsup = ecmd->rx_max_coalesced_frames;
3339 vptr->options.tx_intsup = ecmd->tx_max_coalesced_frames;
3341 set_pending_timer_val(&vptr->options.rxqueue_timer,
3342 ecmd->rx_coalesce_usecs);
3343 set_pending_timer_val(&vptr->options.txqueue_timer,
3344 ecmd->tx_coalesce_usecs);
3346 /* Setup the interrupt suppression and queue timers */
3347 mac_disable_int(vptr->mac_regs);
3348 setup_adaptive_interrupts(vptr);
3349 setup_queue_timers(vptr);
3351 mac_write_int_mask(vptr->int_mask, vptr->mac_regs);
3352 mac_clear_isr(vptr->mac_regs);
3353 mac_enable_int(vptr->mac_regs);
3358 static const struct ethtool_ops velocity_ethtool_ops = {
3359 .get_settings = velocity_get_settings,
3360 .set_settings = velocity_set_settings,
3361 .get_drvinfo = velocity_get_drvinfo,
3362 .get_wol = velocity_ethtool_get_wol,
3363 .set_wol = velocity_ethtool_set_wol,
3364 .get_msglevel = velocity_get_msglevel,
3365 .set_msglevel = velocity_set_msglevel,
3366 .get_link = velocity_get_link,
3367 .get_coalesce = velocity_get_coalesce,
3368 .set_coalesce = velocity_set_coalesce,
3369 .begin = velocity_ethtool_up,
3370 .complete = velocity_ethtool_down
3375 static int velocity_netdev_event(struct notifier_block *nb, unsigned long notification, void *ptr)
3377 struct in_ifaddr *ifa = (struct in_ifaddr *) ptr;
3378 struct net_device *dev = ifa->ifa_dev->dev;
3380 if (dev_net(dev) == &init_net &&
3381 dev->netdev_ops == &velocity_netdev_ops)
3382 velocity_get_ip(netdev_priv(dev));
3386 #endif /* CONFIG_INET */
3387 #endif /* CONFIG_PM */
3389 #if defined(CONFIG_PM) && defined(CONFIG_INET)
3390 static struct notifier_block velocity_inetaddr_notifier = {
3391 .notifier_call = velocity_netdev_event,
3394 static void velocity_register_notifier(void)
3396 register_inetaddr_notifier(&velocity_inetaddr_notifier);
3399 static void velocity_unregister_notifier(void)
3401 unregister_inetaddr_notifier(&velocity_inetaddr_notifier);
3406 #define velocity_register_notifier() do {} while (0)
3407 #define velocity_unregister_notifier() do {} while (0)
3409 #endif /* defined(CONFIG_PM) && defined(CONFIG_INET) */
3412 * velocity_init_module - load time function
3414 * Called when the velocity module is loaded. The PCI driver
3415 * is registered with the PCI layer, and in turn will call
3416 * the probe functions for each velocity adapter installed
3419 static int __init velocity_init_module(void)
3423 velocity_register_notifier();
3424 ret = pci_register_driver(&velocity_driver);
3426 velocity_unregister_notifier();
3431 * velocity_cleanup - module unload
3433 * When the velocity hardware is unloaded this function is called.
3434 * It will clean up the notifiers and the unregister the PCI
3435 * driver interface for this hardware. This in turn cleans up
3436 * all discovered interfaces before returning from the function
3438 static void __exit velocity_cleanup_module(void)
3440 velocity_unregister_notifier();
3441 pci_unregister_driver(&velocity_driver);
3444 module_init(velocity_init_module);
3445 module_exit(velocity_cleanup_module);