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
14
* The changes are (c) Copyright 2004, Red Hat Inc. <alan@lxorguk.ukuu.org.uk>
15
* Additional fixes and clean up: Francois Romieu
17
* This source has not been verified for use in safety critical systems.
19
* Please direct queries about the revamped driver to the linux-kernel
24
* Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
25
* All rights reserved.
27
* This software may be redistributed and/or modified under
28
* the terms of the GNU General Public License as published by the Free
29
* Software Foundation; either version 2 of the License, or
32
* This program is distributed in the hope that it will be useful, but
33
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
34
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
37
* Author: Chuang Liang-Shing, AJ Jiang
41
* MODULE_LICENSE("GPL");
45
#include <linux/module.h>
46
#include <linux/types.h>
47
#include <linux/bitops.h>
48
#include <linux/init.h>
50
#include <linux/errno.h>
51
#include <linux/ioport.h>
52
#include <linux/pci.h>
53
#include <linux/kernel.h>
54
#include <linux/netdevice.h>
55
#include <linux/etherdevice.h>
56
#include <linux/skbuff.h>
57
#include <linux/delay.h>
58
#include <linux/timer.h>
59
#include <linux/slab.h>
60
#include <linux/interrupt.h>
61
#include <linux/string.h>
62
#include <linux/wait.h>
65
#include <linux/uaccess.h>
66
#include <linux/proc_fs.h>
67
#include <linux/inetdevice.h>
68
#include <linux/reboot.h>
69
#include <linux/ethtool.h>
70
#include <linux/mii.h>
72
#include <linux/if_arp.h>
73
#include <linux/if_vlan.h>
75
#include <linux/tcp.h>
76
#include <linux/udp.h>
77
#include <linux/crc-ccitt.h>
78
#include <linux/crc32.h>
80
#include "via-velocity.h"
83
static int velocity_nics;
84
static int msglevel = MSG_LEVEL_INFO;
87
* mac_get_cam_mask - Read a CAM mask
88
* @regs: register block for this velocity
89
* @mask: buffer to store mask
91
* Fetch the mask bits of the selected CAM and store them into the
92
* provided mask buffer.
94
static void mac_get_cam_mask(struct mac_regs __iomem *regs, u8 *mask)
99
BYTE_REG_BITS_SET(CAMCR_PS_CAM_MASK, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
101
writeb(0, ®s->CAMADDR);
104
for (i = 0; i < 8; i++)
105
*mask++ = readb(&(regs->MARCAM[i]));
108
writeb(0, ®s->CAMADDR);
111
BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
115
* mac_set_cam_mask - Set a CAM mask
116
* @regs: register block for this velocity
117
* @mask: CAM mask to load
119
* Store a new mask into a CAM
121
static void mac_set_cam_mask(struct mac_regs __iomem *regs, u8 *mask)
124
/* Select CAM mask */
125
BYTE_REG_BITS_SET(CAMCR_PS_CAM_MASK, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
127
writeb(CAMADDR_CAMEN, ®s->CAMADDR);
129
for (i = 0; i < 8; i++)
130
writeb(*mask++, &(regs->MARCAM[i]));
133
writeb(0, ®s->CAMADDR);
136
BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
139
static void mac_set_vlan_cam_mask(struct mac_regs __iomem *regs, u8 *mask)
142
/* Select CAM mask */
143
BYTE_REG_BITS_SET(CAMCR_PS_CAM_MASK, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
145
writeb(CAMADDR_CAMEN | CAMADDR_VCAMSL, ®s->CAMADDR);
147
for (i = 0; i < 8; i++)
148
writeb(*mask++, &(regs->MARCAM[i]));
151
writeb(0, ®s->CAMADDR);
154
BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
158
* mac_set_cam - set CAM data
159
* @regs: register block of this velocity
161
* @addr: 2 or 6 bytes of CAM data
163
* Load an address or vlan tag into a CAM
165
static void mac_set_cam(struct mac_regs __iomem *regs, int idx, const u8 *addr)
169
/* Select CAM mask */
170
BYTE_REG_BITS_SET(CAMCR_PS_CAM_DATA, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
174
writeb(CAMADDR_CAMEN | idx, ®s->CAMADDR);
176
for (i = 0; i < 6; i++)
177
writeb(*addr++, &(regs->MARCAM[i]));
179
BYTE_REG_BITS_ON(CAMCR_CAMWR, ®s->CAMCR);
183
writeb(0, ®s->CAMADDR);
186
BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
189
static void mac_set_vlan_cam(struct mac_regs __iomem *regs, int idx,
193
/* Select CAM mask */
194
BYTE_REG_BITS_SET(CAMCR_PS_CAM_DATA, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
198
writeb(CAMADDR_CAMEN | CAMADDR_VCAMSL | idx, ®s->CAMADDR);
199
writew(*((u16 *) addr), ®s->MARCAM[0]);
201
BYTE_REG_BITS_ON(CAMCR_CAMWR, ®s->CAMCR);
205
writeb(0, ®s->CAMADDR);
208
BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
213
* mac_wol_reset - reset WOL after exiting low power
214
* @regs: register block of this velocity
216
* Called after we drop out of wake on lan mode in order to
217
* reset the Wake on lan features. This function doesn't restore
218
* the rest of the logic from the result of sleep/wakeup
220
static void mac_wol_reset(struct mac_regs __iomem *regs)
223
/* Turn off SWPTAG right after leaving power mode */
224
BYTE_REG_BITS_OFF(STICKHW_SWPTAG, ®s->STICKHW);
225
/* clear sticky bits */
226
BYTE_REG_BITS_OFF((STICKHW_DS1 | STICKHW_DS0), ®s->STICKHW);
228
BYTE_REG_BITS_OFF(CHIPGCR_FCGMII, ®s->CHIPGCR);
229
BYTE_REG_BITS_OFF(CHIPGCR_FCMODE, ®s->CHIPGCR);
230
/* disable force PME-enable */
231
writeb(WOLCFG_PMEOVR, ®s->WOLCFGClr);
232
/* disable power-event config bit */
233
writew(0xFFFF, ®s->WOLCRClr);
234
/* clear power status */
235
writew(0xFFFF, ®s->WOLSRClr);
238
static const struct ethtool_ops velocity_ethtool_ops;
241
Define module options
244
MODULE_AUTHOR("VIA Networking Technologies, Inc.");
245
MODULE_LICENSE("GPL");
246
MODULE_DESCRIPTION("VIA Networking Velocity Family Gigabit Ethernet Adapter Driver");
248
#define VELOCITY_PARAM(N, D) \
249
static int N[MAX_UNITS] = OPTION_DEFAULT;\
250
module_param_array(N, int, NULL, 0); \
251
MODULE_PARM_DESC(N, D);
253
#define RX_DESC_MIN 64
254
#define RX_DESC_MAX 255
255
#define RX_DESC_DEF 64
256
VELOCITY_PARAM(RxDescriptors, "Number of receive descriptors");
258
#define TX_DESC_MIN 16
259
#define TX_DESC_MAX 256
260
#define TX_DESC_DEF 64
261
VELOCITY_PARAM(TxDescriptors, "Number of transmit descriptors");
263
#define RX_THRESH_MIN 0
264
#define RX_THRESH_MAX 3
265
#define RX_THRESH_DEF 0
266
/* rx_thresh[] is used for controlling the receive fifo threshold.
267
0: indicate the rxfifo threshold is 128 bytes.
268
1: indicate the rxfifo threshold is 512 bytes.
269
2: indicate the rxfifo threshold is 1024 bytes.
270
3: indicate the rxfifo threshold is store & forward.
272
VELOCITY_PARAM(rx_thresh, "Receive fifo threshold");
274
#define DMA_LENGTH_MIN 0
275
#define DMA_LENGTH_MAX 7
276
#define DMA_LENGTH_DEF 6
278
/* DMA_length[] is used for controlling the DMA length
285
6: SF(flush till emply)
286
7: SF(flush till emply)
288
VELOCITY_PARAM(DMA_length, "DMA length");
290
#define IP_ALIG_DEF 0
291
/* IP_byte_align[] is used for IP header DWORD byte aligned
292
0: indicate the IP header won't be DWORD byte aligned.(Default) .
293
1: indicate the IP header will be DWORD byte aligned.
294
In some environment, the IP header should be DWORD byte aligned,
295
or the packet will be droped when we receive it. (eg: IPVS)
297
VELOCITY_PARAM(IP_byte_align, "Enable IP header dword aligned");
299
#define FLOW_CNTL_DEF 1
300
#define FLOW_CNTL_MIN 1
301
#define FLOW_CNTL_MAX 5
303
/* flow_control[] is used for setting the flow control ability of NIC.
304
1: hardware deafult - AUTO (default). Use Hardware default value in ANAR.
305
2: enable TX flow control.
306
3: enable RX flow control.
307
4: enable RX/TX flow control.
310
VELOCITY_PARAM(flow_control, "Enable flow control ability");
312
#define MED_LNK_DEF 0
313
#define MED_LNK_MIN 0
314
#define MED_LNK_MAX 5
315
/* speed_duplex[] is used for setting the speed and duplex mode of NIC.
316
0: indicate autonegotiation for both speed and duplex mode
317
1: indicate 100Mbps half duplex mode
318
2: indicate 100Mbps full duplex mode
319
3: indicate 10Mbps half duplex mode
320
4: indicate 10Mbps full duplex mode
321
5: indicate 1000Mbps full duplex mode
324
if EEPROM have been set to the force mode, this option is ignored
327
VELOCITY_PARAM(speed_duplex, "Setting the speed and duplex mode");
329
#define VAL_PKT_LEN_DEF 0
330
/* ValPktLen[] is used for setting the checksum offload ability of NIC.
331
0: Receive frame with invalid layer 2 length (Default)
332
1: Drop frame with invalid layer 2 length
334
VELOCITY_PARAM(ValPktLen, "Receiving or Drop invalid 802.3 frame");
336
#define WOL_OPT_DEF 0
337
#define WOL_OPT_MIN 0
338
#define WOL_OPT_MAX 7
339
/* wol_opts[] is used for controlling wake on lan behavior.
340
0: Wake up if recevied a magic packet. (Default)
341
1: Wake up if link status is on/off.
342
2: Wake up if recevied an arp packet.
343
4: Wake up if recevied any unicast packet.
344
Those value can be sumed up to support more than one option.
346
VELOCITY_PARAM(wol_opts, "Wake On Lan options");
348
static int rx_copybreak = 200;
349
module_param(rx_copybreak, int, 0644);
350
MODULE_PARM_DESC(rx_copybreak, "Copy breakpoint for copy-only-tiny-frames");
353
* Internal board variants. At the moment we have only one
355
static struct velocity_info_tbl chip_info_table[] = {
356
{CHIP_TYPE_VT6110, "VIA Networking Velocity Family Gigabit Ethernet Adapter", 1, 0x00FFFFFFUL},
361
* Describe the PCI device identifiers that we support in this
362
* device driver. Used for hotplug autoloading.
364
static DEFINE_PCI_DEVICE_TABLE(velocity_id_table) = {
365
{ PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_612X) },
369
MODULE_DEVICE_TABLE(pci, velocity_id_table);
372
* get_chip_name - identifier to name
373
* @id: chip identifier
375
* Given a chip identifier return a suitable description. Returns
376
* a pointer a static string valid while the driver is loaded.
378
static const char __devinit *get_chip_name(enum chip_type chip_id)
381
for (i = 0; chip_info_table[i].name != NULL; i++)
382
if (chip_info_table[i].chip_id == chip_id)
384
return chip_info_table[i].name;
388
* velocity_remove1 - device unplug
389
* @pdev: PCI device being removed
391
* Device unload callback. Called on an unplug or on module
392
* unload for each active device that is present. Disconnects
393
* the device from the network layer and frees all the resources
395
static void __devexit velocity_remove1(struct pci_dev *pdev)
397
struct net_device *dev = pci_get_drvdata(pdev);
398
struct velocity_info *vptr = netdev_priv(dev);
400
unregister_netdev(dev);
401
iounmap(vptr->mac_regs);
402
pci_release_regions(pdev);
403
pci_disable_device(pdev);
404
pci_set_drvdata(pdev, NULL);
411
* velocity_set_int_opt - parser for integer options
412
* @opt: pointer to option value
413
* @val: value the user requested (or -1 for default)
414
* @min: lowest value allowed
415
* @max: highest value allowed
416
* @def: default value
417
* @name: property name
420
* Set an integer property in the module options. This function does
421
* all the verification and checking as well as reporting so that
422
* we don't duplicate code for each option.
424
static void __devinit velocity_set_int_opt(int *opt, int val, int min, int max, int def, char *name, const char *devname)
428
else if (val < min || val > max) {
429
VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: the value of parameter %s is invalid, the valid range is (%d-%d)\n",
430
devname, name, min, max);
433
VELOCITY_PRT(MSG_LEVEL_INFO, KERN_INFO "%s: set value of parameter %s to %d\n",
440
* velocity_set_bool_opt - parser for boolean options
441
* @opt: pointer to option value
442
* @val: value the user requested (or -1 for default)
443
* @def: default value (yes/no)
444
* @flag: numeric value to set for true.
445
* @name: property name
448
* Set a boolean property in the module options. This function does
449
* all the verification and checking as well as reporting so that
450
* we don't duplicate code for each option.
452
static void __devinit velocity_set_bool_opt(u32 *opt, int val, int def, u32 flag, char *name, const char *devname)
456
*opt |= (def ? flag : 0);
457
else if (val < 0 || val > 1) {
458
printk(KERN_NOTICE "%s: the value of parameter %s is invalid, the valid range is (0-1)\n",
460
*opt |= (def ? flag : 0);
462
printk(KERN_INFO "%s: set parameter %s to %s\n",
463
devname, name, val ? "TRUE" : "FALSE");
464
*opt |= (val ? flag : 0);
469
* velocity_get_options - set options on device
470
* @opts: option structure for the device
471
* @index: index of option to use in module options array
472
* @devname: device name
474
* Turn the module and command options into a single structure
475
* for the current device
477
static void __devinit velocity_get_options(struct velocity_opt *opts, int index, const char *devname)
480
velocity_set_int_opt(&opts->rx_thresh, rx_thresh[index], RX_THRESH_MIN, RX_THRESH_MAX, RX_THRESH_DEF, "rx_thresh", devname);
481
velocity_set_int_opt(&opts->DMA_length, DMA_length[index], DMA_LENGTH_MIN, DMA_LENGTH_MAX, DMA_LENGTH_DEF, "DMA_length", devname);
482
velocity_set_int_opt(&opts->numrx, RxDescriptors[index], RX_DESC_MIN, RX_DESC_MAX, RX_DESC_DEF, "RxDescriptors", devname);
483
velocity_set_int_opt(&opts->numtx, TxDescriptors[index], TX_DESC_MIN, TX_DESC_MAX, TX_DESC_DEF, "TxDescriptors", devname);
485
velocity_set_int_opt(&opts->flow_cntl, flow_control[index], FLOW_CNTL_MIN, FLOW_CNTL_MAX, FLOW_CNTL_DEF, "flow_control", devname);
486
velocity_set_bool_opt(&opts->flags, IP_byte_align[index], IP_ALIG_DEF, VELOCITY_FLAGS_IP_ALIGN, "IP_byte_align", devname);
487
velocity_set_bool_opt(&opts->flags, ValPktLen[index], VAL_PKT_LEN_DEF, VELOCITY_FLAGS_VAL_PKT_LEN, "ValPktLen", devname);
488
velocity_set_int_opt((int *) &opts->spd_dpx, speed_duplex[index], MED_LNK_MIN, MED_LNK_MAX, MED_LNK_DEF, "Media link mode", devname);
489
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);
490
opts->numrx = (opts->numrx & ~3);
494
* velocity_init_cam_filter - initialise CAM
495
* @vptr: velocity to program
497
* Initialize the content addressable memory used for filters. Load
498
* appropriately according to the presence of VLAN
500
static void velocity_init_cam_filter(struct velocity_info *vptr)
502
struct mac_regs __iomem *regs = vptr->mac_regs;
503
unsigned int vid, i = 0;
505
/* Turn on MCFG_PQEN, turn off MCFG_RTGOPT */
506
WORD_REG_BITS_SET(MCFG_PQEN, MCFG_RTGOPT, ®s->MCFG);
507
WORD_REG_BITS_ON(MCFG_VIDFR, ®s->MCFG);
509
/* Disable all CAMs */
510
memset(vptr->vCAMmask, 0, sizeof(u8) * 8);
511
memset(vptr->mCAMmask, 0, sizeof(u8) * 8);
512
mac_set_vlan_cam_mask(regs, vptr->vCAMmask);
513
mac_set_cam_mask(regs, vptr->mCAMmask);
516
for_each_set_bit(vid, vptr->active_vlans, VLAN_N_VID) {
517
mac_set_vlan_cam(regs, i, (u8 *) &vid);
518
vptr->vCAMmask[i / 8] |= 0x1 << (i % 8);
519
if (++i >= VCAM_SIZE)
522
mac_set_vlan_cam_mask(regs, vptr->vCAMmask);
525
static void velocity_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
527
struct velocity_info *vptr = netdev_priv(dev);
529
spin_lock_irq(&vptr->lock);
530
set_bit(vid, vptr->active_vlans);
531
velocity_init_cam_filter(vptr);
532
spin_unlock_irq(&vptr->lock);
535
static void velocity_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
537
struct velocity_info *vptr = netdev_priv(dev);
539
spin_lock_irq(&vptr->lock);
540
clear_bit(vid, vptr->active_vlans);
541
velocity_init_cam_filter(vptr);
542
spin_unlock_irq(&vptr->lock);
545
static void velocity_init_rx_ring_indexes(struct velocity_info *vptr)
547
vptr->rx.dirty = vptr->rx.filled = vptr->rx.curr = 0;
551
* velocity_rx_reset - handle a receive reset
552
* @vptr: velocity we are resetting
554
* Reset the ownership and status for the receive ring side.
555
* Hand all the receive queue to the NIC.
557
static void velocity_rx_reset(struct velocity_info *vptr)
560
struct mac_regs __iomem *regs = vptr->mac_regs;
563
velocity_init_rx_ring_indexes(vptr);
566
* Init state, all RD entries belong to the NIC
568
for (i = 0; i < vptr->options.numrx; ++i)
569
vptr->rx.ring[i].rdesc0.len |= OWNED_BY_NIC;
571
writew(vptr->options.numrx, ®s->RBRDU);
572
writel(vptr->rx.pool_dma, ®s->RDBaseLo);
573
writew(0, ®s->RDIdx);
574
writew(vptr->options.numrx - 1, ®s->RDCSize);
578
* velocity_get_opt_media_mode - get media selection
579
* @vptr: velocity adapter
581
* Get the media mode stored in EEPROM or module options and load
582
* mii_status accordingly. The requested link state information
585
static u32 velocity_get_opt_media_mode(struct velocity_info *vptr)
589
switch (vptr->options.spd_dpx) {
591
status = VELOCITY_AUTONEG_ENABLE;
593
case SPD_DPX_100_FULL:
594
status = VELOCITY_SPEED_100 | VELOCITY_DUPLEX_FULL;
596
case SPD_DPX_10_FULL:
597
status = VELOCITY_SPEED_10 | VELOCITY_DUPLEX_FULL;
599
case SPD_DPX_100_HALF:
600
status = VELOCITY_SPEED_100;
602
case SPD_DPX_10_HALF:
603
status = VELOCITY_SPEED_10;
605
case SPD_DPX_1000_FULL:
606
status = VELOCITY_SPEED_1000 | VELOCITY_DUPLEX_FULL;
609
vptr->mii_status = status;
614
* safe_disable_mii_autopoll - autopoll off
615
* @regs: velocity registers
617
* Turn off the autopoll and wait for it to disable on the chip
619
static void safe_disable_mii_autopoll(struct mac_regs __iomem *regs)
624
writeb(0, ®s->MIICR);
625
for (ww = 0; ww < W_MAX_TIMEOUT; ww++) {
627
if (BYTE_REG_BITS_IS_ON(MIISR_MIDLE, ®s->MIISR))
633
* enable_mii_autopoll - turn on autopolling
634
* @regs: velocity registers
636
* Enable the MII link status autopoll feature on the Velocity
637
* hardware. Wait for it to enable.
639
static void enable_mii_autopoll(struct mac_regs __iomem *regs)
643
writeb(0, &(regs->MIICR));
644
writeb(MIIADR_SWMPL, ®s->MIIADR);
646
for (ii = 0; ii < W_MAX_TIMEOUT; ii++) {
648
if (BYTE_REG_BITS_IS_ON(MIISR_MIDLE, ®s->MIISR))
652
writeb(MIICR_MAUTO, ®s->MIICR);
654
for (ii = 0; ii < W_MAX_TIMEOUT; ii++) {
656
if (!BYTE_REG_BITS_IS_ON(MIISR_MIDLE, ®s->MIISR))
663
* velocity_mii_read - read MII data
664
* @regs: velocity registers
665
* @index: MII register index
666
* @data: buffer for received data
668
* Perform a single read of an MII 16bit register. Returns zero
669
* on success or -ETIMEDOUT if the PHY did not respond.
671
static int velocity_mii_read(struct mac_regs __iomem *regs, u8 index, u16 *data)
676
* Disable MIICR_MAUTO, so that mii addr can be set normally
678
safe_disable_mii_autopoll(regs);
680
writeb(index, ®s->MIIADR);
682
BYTE_REG_BITS_ON(MIICR_RCMD, ®s->MIICR);
684
for (ww = 0; ww < W_MAX_TIMEOUT; ww++) {
685
if (!(readb(®s->MIICR) & MIICR_RCMD))
689
*data = readw(®s->MIIDATA);
691
enable_mii_autopoll(regs);
692
if (ww == W_MAX_TIMEOUT)
698
* mii_check_media_mode - check media state
699
* @regs: velocity registers
701
* Check the current MII status and determine the link status
704
static u32 mii_check_media_mode(struct mac_regs __iomem *regs)
709
if (!MII_REG_BITS_IS_ON(BMSR_LSTATUS, MII_BMSR, regs))
710
status |= VELOCITY_LINK_FAIL;
712
if (MII_REG_BITS_IS_ON(ADVERTISE_1000FULL, MII_CTRL1000, regs))
713
status |= VELOCITY_SPEED_1000 | VELOCITY_DUPLEX_FULL;
714
else if (MII_REG_BITS_IS_ON(ADVERTISE_1000HALF, MII_CTRL1000, regs))
715
status |= (VELOCITY_SPEED_1000);
717
velocity_mii_read(regs, MII_ADVERTISE, &ANAR);
718
if (ANAR & ADVERTISE_100FULL)
719
status |= (VELOCITY_SPEED_100 | VELOCITY_DUPLEX_FULL);
720
else if (ANAR & ADVERTISE_100HALF)
721
status |= VELOCITY_SPEED_100;
722
else if (ANAR & ADVERTISE_10FULL)
723
status |= (VELOCITY_SPEED_10 | VELOCITY_DUPLEX_FULL);
725
status |= (VELOCITY_SPEED_10);
728
if (MII_REG_BITS_IS_ON(BMCR_ANENABLE, MII_BMCR, regs)) {
729
velocity_mii_read(regs, MII_ADVERTISE, &ANAR);
730
if ((ANAR & (ADVERTISE_100FULL | ADVERTISE_100HALF | ADVERTISE_10FULL | ADVERTISE_10HALF))
731
== (ADVERTISE_100FULL | ADVERTISE_100HALF | ADVERTISE_10FULL | ADVERTISE_10HALF)) {
732
if (MII_REG_BITS_IS_ON(ADVERTISE_1000HALF | ADVERTISE_1000FULL, MII_CTRL1000, regs))
733
status |= VELOCITY_AUTONEG_ENABLE;
741
* velocity_mii_write - write MII data
742
* @regs: velocity registers
743
* @index: MII register index
744
* @data: 16bit data for the MII register
746
* Perform a single write to an MII 16bit register. Returns zero
747
* on success or -ETIMEDOUT if the PHY did not respond.
749
static int velocity_mii_write(struct mac_regs __iomem *regs, u8 mii_addr, u16 data)
754
* Disable MIICR_MAUTO, so that mii addr can be set normally
756
safe_disable_mii_autopoll(regs);
759
writeb(mii_addr, ®s->MIIADR);
761
writew(data, ®s->MIIDATA);
763
/* turn on MIICR_WCMD */
764
BYTE_REG_BITS_ON(MIICR_WCMD, ®s->MIICR);
766
/* W_MAX_TIMEOUT is the timeout period */
767
for (ww = 0; ww < W_MAX_TIMEOUT; ww++) {
769
if (!(readb(®s->MIICR) & MIICR_WCMD))
772
enable_mii_autopoll(regs);
774
if (ww == W_MAX_TIMEOUT)
780
* set_mii_flow_control - flow control setup
781
* @vptr: velocity interface
783
* Set up the flow control on this interface according to
784
* the supplied user/eeprom options.
786
static void set_mii_flow_control(struct velocity_info *vptr)
788
/*Enable or Disable PAUSE in ANAR */
789
switch (vptr->options.flow_cntl) {
791
MII_REG_BITS_OFF(ADVERTISE_PAUSE_CAP, MII_ADVERTISE, vptr->mac_regs);
792
MII_REG_BITS_ON(ADVERTISE_PAUSE_ASYM, MII_ADVERTISE, vptr->mac_regs);
796
MII_REG_BITS_ON(ADVERTISE_PAUSE_CAP, MII_ADVERTISE, vptr->mac_regs);
797
MII_REG_BITS_ON(ADVERTISE_PAUSE_ASYM, MII_ADVERTISE, vptr->mac_regs);
800
case FLOW_CNTL_TX_RX:
801
MII_REG_BITS_ON(ADVERTISE_PAUSE_CAP, MII_ADVERTISE, vptr->mac_regs);
802
MII_REG_BITS_OFF(ADVERTISE_PAUSE_ASYM, MII_ADVERTISE, vptr->mac_regs);
805
case FLOW_CNTL_DISABLE:
806
MII_REG_BITS_OFF(ADVERTISE_PAUSE_CAP, MII_ADVERTISE, vptr->mac_regs);
807
MII_REG_BITS_OFF(ADVERTISE_PAUSE_ASYM, MII_ADVERTISE, vptr->mac_regs);
815
* mii_set_auto_on - autonegotiate on
818
* Enable autonegotation on this interface
820
static void mii_set_auto_on(struct velocity_info *vptr)
822
if (MII_REG_BITS_IS_ON(BMCR_ANENABLE, MII_BMCR, vptr->mac_regs))
823
MII_REG_BITS_ON(BMCR_ANRESTART, MII_BMCR, vptr->mac_regs);
825
MII_REG_BITS_ON(BMCR_ANENABLE, MII_BMCR, vptr->mac_regs);
828
static u32 check_connection_type(struct mac_regs __iomem *regs)
833
PHYSR0 = readb(®s->PHYSR0);
836
if (!(PHYSR0 & PHYSR0_LINKGD))
837
status|=VELOCITY_LINK_FAIL;
840
if (PHYSR0 & PHYSR0_FDPX)
841
status |= VELOCITY_DUPLEX_FULL;
843
if (PHYSR0 & PHYSR0_SPDG)
844
status |= VELOCITY_SPEED_1000;
845
else if (PHYSR0 & PHYSR0_SPD10)
846
status |= VELOCITY_SPEED_10;
848
status |= VELOCITY_SPEED_100;
850
if (MII_REG_BITS_IS_ON(BMCR_ANENABLE, MII_BMCR, regs)) {
851
velocity_mii_read(regs, MII_ADVERTISE, &ANAR);
852
if ((ANAR & (ADVERTISE_100FULL | ADVERTISE_100HALF | ADVERTISE_10FULL | ADVERTISE_10HALF))
853
== (ADVERTISE_100FULL | ADVERTISE_100HALF | ADVERTISE_10FULL | ADVERTISE_10HALF)) {
854
if (MII_REG_BITS_IS_ON(ADVERTISE_1000HALF | ADVERTISE_1000FULL, MII_CTRL1000, regs))
855
status |= VELOCITY_AUTONEG_ENABLE;
863
* velocity_set_media_mode - set media mode
864
* @mii_status: old MII link state
866
* Check the media link state and configure the flow control
867
* PHY and also velocity hardware setup accordingly. In particular
868
* we need to set up CD polling and frame bursting.
870
static int velocity_set_media_mode(struct velocity_info *vptr, u32 mii_status)
873
struct mac_regs __iomem *regs = vptr->mac_regs;
875
vptr->mii_status = mii_check_media_mode(vptr->mac_regs);
876
curr_status = vptr->mii_status & (~VELOCITY_LINK_FAIL);
878
/* Set mii link status */
879
set_mii_flow_control(vptr);
882
Check if new status is consistent with current status
883
if (((mii_status & curr_status) & VELOCITY_AUTONEG_ENABLE) ||
884
(mii_status==curr_status)) {
885
vptr->mii_status=mii_check_media_mode(vptr->mac_regs);
886
vptr->mii_status=check_connection_type(vptr->mac_regs);
887
VELOCITY_PRT(MSG_LEVEL_INFO, "Velocity link no change\n");
892
if (PHYID_GET_PHY_ID(vptr->phy_id) == PHYID_CICADA_CS8201)
893
MII_REG_BITS_ON(AUXCR_MDPPS, MII_NCONFIG, vptr->mac_regs);
896
* If connection type is AUTO
898
if (mii_status & VELOCITY_AUTONEG_ENABLE) {
899
VELOCITY_PRT(MSG_LEVEL_INFO, "Velocity is AUTO mode\n");
900
/* clear force MAC mode bit */
901
BYTE_REG_BITS_OFF(CHIPGCR_FCMODE, ®s->CHIPGCR);
902
/* set duplex mode of MAC according to duplex mode of MII */
903
MII_REG_BITS_ON(ADVERTISE_100FULL | ADVERTISE_100HALF | ADVERTISE_10FULL | ADVERTISE_10HALF, MII_ADVERTISE, vptr->mac_regs);
904
MII_REG_BITS_ON(ADVERTISE_1000FULL | ADVERTISE_1000HALF, MII_CTRL1000, vptr->mac_regs);
905
MII_REG_BITS_ON(BMCR_SPEED1000, MII_BMCR, vptr->mac_regs);
907
/* enable AUTO-NEGO mode */
908
mii_set_auto_on(vptr);
915
* 1. if it's 3119, disable frame bursting in halfduplex mode
916
* and enable it in fullduplex mode
917
* 2. set correct MII/GMII and half/full duplex mode in CHIPGCR
918
* 3. only enable CD heart beat counter in 10HD mode
921
/* set force MAC mode bit */
922
BYTE_REG_BITS_ON(CHIPGCR_FCMODE, ®s->CHIPGCR);
924
CHIPGCR = readb(®s->CHIPGCR);
926
if (mii_status & VELOCITY_SPEED_1000)
927
CHIPGCR |= CHIPGCR_FCGMII;
929
CHIPGCR &= ~CHIPGCR_FCGMII;
931
if (mii_status & VELOCITY_DUPLEX_FULL) {
932
CHIPGCR |= CHIPGCR_FCFDX;
933
writeb(CHIPGCR, ®s->CHIPGCR);
934
VELOCITY_PRT(MSG_LEVEL_INFO, "set Velocity to forced full mode\n");
935
if (vptr->rev_id < REV_ID_VT3216_A0)
936
BYTE_REG_BITS_OFF(TCR_TB2BDIS, ®s->TCR);
938
CHIPGCR &= ~CHIPGCR_FCFDX;
939
VELOCITY_PRT(MSG_LEVEL_INFO, "set Velocity to forced half mode\n");
940
writeb(CHIPGCR, ®s->CHIPGCR);
941
if (vptr->rev_id < REV_ID_VT3216_A0)
942
BYTE_REG_BITS_ON(TCR_TB2BDIS, ®s->TCR);
945
velocity_mii_read(vptr->mac_regs, MII_CTRL1000, &CTRL1000);
946
CTRL1000 &= ~(ADVERTISE_1000FULL | ADVERTISE_1000HALF);
947
if ((mii_status & VELOCITY_SPEED_1000) &&
948
(mii_status & VELOCITY_DUPLEX_FULL)) {
949
CTRL1000 |= ADVERTISE_1000FULL;
951
velocity_mii_write(vptr->mac_regs, MII_CTRL1000, CTRL1000);
953
if (!(mii_status & VELOCITY_DUPLEX_FULL) && (mii_status & VELOCITY_SPEED_10))
954
BYTE_REG_BITS_OFF(TESTCFG_HBDIS, ®s->TESTCFG);
956
BYTE_REG_BITS_ON(TESTCFG_HBDIS, ®s->TESTCFG);
958
/* MII_REG_BITS_OFF(BMCR_SPEED1000, MII_BMCR, vptr->mac_regs); */
959
velocity_mii_read(vptr->mac_regs, MII_ADVERTISE, &ANAR);
960
ANAR &= (~(ADVERTISE_100FULL | ADVERTISE_100HALF | ADVERTISE_10FULL | ADVERTISE_10HALF));
961
if (mii_status & VELOCITY_SPEED_100) {
962
if (mii_status & VELOCITY_DUPLEX_FULL)
963
ANAR |= ADVERTISE_100FULL;
965
ANAR |= ADVERTISE_100HALF;
966
} else if (mii_status & VELOCITY_SPEED_10) {
967
if (mii_status & VELOCITY_DUPLEX_FULL)
968
ANAR |= ADVERTISE_10FULL;
970
ANAR |= ADVERTISE_10HALF;
972
velocity_mii_write(vptr->mac_regs, MII_ADVERTISE, ANAR);
973
/* enable AUTO-NEGO mode */
974
mii_set_auto_on(vptr);
975
/* MII_REG_BITS_ON(BMCR_ANENABLE, MII_BMCR, vptr->mac_regs); */
977
/* vptr->mii_status=mii_check_media_mode(vptr->mac_regs); */
978
/* vptr->mii_status=check_connection_type(vptr->mac_regs); */
979
return VELOCITY_LINK_CHANGE;
983
* velocity_print_link_status - link status reporting
984
* @vptr: velocity to report on
986
* Turn the link status of the velocity card into a kernel log
987
* description of the new link state, detailing speed and duplex
990
static void velocity_print_link_status(struct velocity_info *vptr)
993
if (vptr->mii_status & VELOCITY_LINK_FAIL) {
994
VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: failed to detect cable link\n", vptr->dev->name);
995
} else if (vptr->options.spd_dpx == SPD_DPX_AUTO) {
996
VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: Link auto-negotiation", vptr->dev->name);
998
if (vptr->mii_status & VELOCITY_SPEED_1000)
999
VELOCITY_PRT(MSG_LEVEL_INFO, " speed 1000M bps");
1000
else if (vptr->mii_status & VELOCITY_SPEED_100)
1001
VELOCITY_PRT(MSG_LEVEL_INFO, " speed 100M bps");
1003
VELOCITY_PRT(MSG_LEVEL_INFO, " speed 10M bps");
1005
if (vptr->mii_status & VELOCITY_DUPLEX_FULL)
1006
VELOCITY_PRT(MSG_LEVEL_INFO, " full duplex\n");
1008
VELOCITY_PRT(MSG_LEVEL_INFO, " half duplex\n");
1010
VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: Link forced", vptr->dev->name);
1011
switch (vptr->options.spd_dpx) {
1012
case SPD_DPX_1000_FULL:
1013
VELOCITY_PRT(MSG_LEVEL_INFO, " speed 1000M bps full duplex\n");
1015
case SPD_DPX_100_HALF:
1016
VELOCITY_PRT(MSG_LEVEL_INFO, " speed 100M bps half duplex\n");
1018
case SPD_DPX_100_FULL:
1019
VELOCITY_PRT(MSG_LEVEL_INFO, " speed 100M bps full duplex\n");
1021
case SPD_DPX_10_HALF:
1022
VELOCITY_PRT(MSG_LEVEL_INFO, " speed 10M bps half duplex\n");
1024
case SPD_DPX_10_FULL:
1025
VELOCITY_PRT(MSG_LEVEL_INFO, " speed 10M bps full duplex\n");
1034
* enable_flow_control_ability - flow control
1035
* @vptr: veloity to configure
1037
* Set up flow control according to the flow control options
1038
* determined by the eeprom/configuration.
1040
static void enable_flow_control_ability(struct velocity_info *vptr)
1043
struct mac_regs __iomem *regs = vptr->mac_regs;
1045
switch (vptr->options.flow_cntl) {
1047
case FLOW_CNTL_DEFAULT:
1048
if (BYTE_REG_BITS_IS_ON(PHYSR0_RXFLC, ®s->PHYSR0))
1049
writel(CR0_FDXRFCEN, ®s->CR0Set);
1051
writel(CR0_FDXRFCEN, ®s->CR0Clr);
1053
if (BYTE_REG_BITS_IS_ON(PHYSR0_TXFLC, ®s->PHYSR0))
1054
writel(CR0_FDXTFCEN, ®s->CR0Set);
1056
writel(CR0_FDXTFCEN, ®s->CR0Clr);
1060
writel(CR0_FDXTFCEN, ®s->CR0Set);
1061
writel(CR0_FDXRFCEN, ®s->CR0Clr);
1065
writel(CR0_FDXRFCEN, ®s->CR0Set);
1066
writel(CR0_FDXTFCEN, ®s->CR0Clr);
1069
case FLOW_CNTL_TX_RX:
1070
writel(CR0_FDXTFCEN, ®s->CR0Set);
1071
writel(CR0_FDXRFCEN, ®s->CR0Set);
1074
case FLOW_CNTL_DISABLE:
1075
writel(CR0_FDXRFCEN, ®s->CR0Clr);
1076
writel(CR0_FDXTFCEN, ®s->CR0Clr);
1086
* velocity_soft_reset - soft reset
1087
* @vptr: velocity to reset
1089
* Kick off a soft reset of the velocity adapter and then poll
1090
* until the reset sequence has completed before returning.
1092
static int velocity_soft_reset(struct velocity_info *vptr)
1094
struct mac_regs __iomem *regs = vptr->mac_regs;
1097
writel(CR0_SFRST, ®s->CR0Set);
1099
for (i = 0; i < W_MAX_TIMEOUT; i++) {
1101
if (!DWORD_REG_BITS_IS_ON(CR0_SFRST, ®s->CR0Set))
1105
if (i == W_MAX_TIMEOUT) {
1106
writel(CR0_FORSRST, ®s->CR0Set);
1107
/* FIXME: PCI POSTING */
1115
* velocity_set_multi - filter list change callback
1116
* @dev: network device
1118
* Called by the network layer when the filter lists need to change
1119
* for a velocity adapter. Reload the CAMs with the new address
1122
static void velocity_set_multi(struct net_device *dev)
1124
struct velocity_info *vptr = netdev_priv(dev);
1125
struct mac_regs __iomem *regs = vptr->mac_regs;
1128
struct netdev_hw_addr *ha;
1130
if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */
1131
writel(0xffffffff, ®s->MARCAM[0]);
1132
writel(0xffffffff, ®s->MARCAM[4]);
1133
rx_mode = (RCR_AM | RCR_AB | RCR_PROM);
1134
} else if ((netdev_mc_count(dev) > vptr->multicast_limit) ||
1135
(dev->flags & IFF_ALLMULTI)) {
1136
writel(0xffffffff, ®s->MARCAM[0]);
1137
writel(0xffffffff, ®s->MARCAM[4]);
1138
rx_mode = (RCR_AM | RCR_AB);
1140
int offset = MCAM_SIZE - vptr->multicast_limit;
1141
mac_get_cam_mask(regs, vptr->mCAMmask);
1144
netdev_for_each_mc_addr(ha, dev) {
1145
mac_set_cam(regs, i + offset, ha->addr);
1146
vptr->mCAMmask[(offset + i) / 8] |= 1 << ((offset + i) & 7);
1150
mac_set_cam_mask(regs, vptr->mCAMmask);
1151
rx_mode = RCR_AM | RCR_AB | RCR_AP;
1153
if (dev->mtu > 1500)
1156
BYTE_REG_BITS_ON(rx_mode, ®s->RCR);
1161
* MII access , media link mode setting functions
1165
* mii_init - set up MII
1166
* @vptr: velocity adapter
1167
* @mii_status: links tatus
1169
* Set up the PHY for the current link state.
1171
static void mii_init(struct velocity_info *vptr, u32 mii_status)
1175
switch (PHYID_GET_PHY_ID(vptr->phy_id)) {
1176
case PHYID_CICADA_CS8201:
1178
* Reset to hardware default
1180
MII_REG_BITS_OFF((ADVERTISE_PAUSE_ASYM | ADVERTISE_PAUSE_CAP), MII_ADVERTISE, vptr->mac_regs);
1182
* Turn on ECHODIS bit in NWay-forced full mode and turn it
1183
* off it in NWay-forced half mode for NWay-forced v.s.
1184
* legacy-forced issue.
1186
if (vptr->mii_status & VELOCITY_DUPLEX_FULL)
1187
MII_REG_BITS_ON(TCSR_ECHODIS, MII_SREVISION, vptr->mac_regs);
1189
MII_REG_BITS_OFF(TCSR_ECHODIS, MII_SREVISION, vptr->mac_regs);
1191
* Turn on Link/Activity LED enable bit for CIS8201
1193
MII_REG_BITS_ON(PLED_LALBE, MII_TPISTATUS, vptr->mac_regs);
1195
case PHYID_VT3216_32BIT:
1196
case PHYID_VT3216_64BIT:
1198
* Reset to hardware default
1200
MII_REG_BITS_ON((ADVERTISE_PAUSE_ASYM | ADVERTISE_PAUSE_CAP), MII_ADVERTISE, vptr->mac_regs);
1202
* Turn on ECHODIS bit in NWay-forced full mode and turn it
1203
* off it in NWay-forced half mode for NWay-forced v.s.
1204
* legacy-forced issue
1206
if (vptr->mii_status & VELOCITY_DUPLEX_FULL)
1207
MII_REG_BITS_ON(TCSR_ECHODIS, MII_SREVISION, vptr->mac_regs);
1209
MII_REG_BITS_OFF(TCSR_ECHODIS, MII_SREVISION, vptr->mac_regs);
1212
case PHYID_MARVELL_1000:
1213
case PHYID_MARVELL_1000S:
1215
* Assert CRS on Transmit
1217
MII_REG_BITS_ON(PSCR_ACRSTX, MII_REG_PSCR, vptr->mac_regs);
1219
* Reset to hardware default
1221
MII_REG_BITS_ON((ADVERTISE_PAUSE_ASYM | ADVERTISE_PAUSE_CAP), MII_ADVERTISE, vptr->mac_regs);
1226
velocity_mii_read(vptr->mac_regs, MII_BMCR, &BMCR);
1227
if (BMCR & BMCR_ISOLATE) {
1228
BMCR &= ~BMCR_ISOLATE;
1229
velocity_mii_write(vptr->mac_regs, MII_BMCR, BMCR);
1234
* setup_queue_timers - Setup interrupt timers
1236
* Setup interrupt frequency during suppression (timeout if the frame
1237
* count isn't filled).
1239
static void setup_queue_timers(struct velocity_info *vptr)
1241
/* Only for newer revisions */
1242
if (vptr->rev_id >= REV_ID_VT3216_A0) {
1243
u8 txqueue_timer = 0;
1244
u8 rxqueue_timer = 0;
1246
if (vptr->mii_status & (VELOCITY_SPEED_1000 |
1247
VELOCITY_SPEED_100)) {
1248
txqueue_timer = vptr->options.txqueue_timer;
1249
rxqueue_timer = vptr->options.rxqueue_timer;
1252
writeb(txqueue_timer, &vptr->mac_regs->TQETMR);
1253
writeb(rxqueue_timer, &vptr->mac_regs->RQETMR);
1258
* setup_adaptive_interrupts - Setup interrupt suppression
1260
* @vptr velocity adapter
1262
* The velocity is able to suppress interrupt during high interrupt load.
1263
* This function turns on that feature.
1265
static void setup_adaptive_interrupts(struct velocity_info *vptr)
1267
struct mac_regs __iomem *regs = vptr->mac_regs;
1268
u16 tx_intsup = vptr->options.tx_intsup;
1269
u16 rx_intsup = vptr->options.rx_intsup;
1271
/* Setup default interrupt mask (will be changed below) */
1272
vptr->int_mask = INT_MASK_DEF;
1274
/* Set Tx Interrupt Suppression Threshold */
1275
writeb(CAMCR_PS0, ®s->CAMCR);
1276
if (tx_intsup != 0) {
1277
vptr->int_mask &= ~(ISR_PTXI | ISR_PTX0I | ISR_PTX1I |
1278
ISR_PTX2I | ISR_PTX3I);
1279
writew(tx_intsup, ®s->ISRCTL);
1281
writew(ISRCTL_TSUPDIS, ®s->ISRCTL);
1283
/* Set Rx Interrupt Suppression Threshold */
1284
writeb(CAMCR_PS1, ®s->CAMCR);
1285
if (rx_intsup != 0) {
1286
vptr->int_mask &= ~ISR_PRXI;
1287
writew(rx_intsup, ®s->ISRCTL);
1289
writew(ISRCTL_RSUPDIS, ®s->ISRCTL);
1291
/* Select page to interrupt hold timer */
1292
writeb(0, ®s->CAMCR);
1296
* velocity_init_registers - initialise MAC registers
1297
* @vptr: velocity to init
1298
* @type: type of initialisation (hot or cold)
1300
* Initialise the MAC on a reset or on first set up on the
1303
static void velocity_init_registers(struct velocity_info *vptr,
1304
enum velocity_init_type type)
1306
struct mac_regs __iomem *regs = vptr->mac_regs;
1309
mac_wol_reset(regs);
1312
case VELOCITY_INIT_RESET:
1313
case VELOCITY_INIT_WOL:
1315
netif_stop_queue(vptr->dev);
1318
* Reset RX to prevent RX pointer not on the 4X location
1320
velocity_rx_reset(vptr);
1321
mac_rx_queue_run(regs);
1322
mac_rx_queue_wake(regs);
1324
mii_status = velocity_get_opt_media_mode(vptr);
1325
if (velocity_set_media_mode(vptr, mii_status) != VELOCITY_LINK_CHANGE) {
1326
velocity_print_link_status(vptr);
1327
if (!(vptr->mii_status & VELOCITY_LINK_FAIL))
1328
netif_wake_queue(vptr->dev);
1331
enable_flow_control_ability(vptr);
1333
mac_clear_isr(regs);
1334
writel(CR0_STOP, ®s->CR0Clr);
1335
writel((CR0_DPOLL | CR0_TXON | CR0_RXON | CR0_STRT),
1340
case VELOCITY_INIT_COLD:
1345
velocity_soft_reset(vptr);
1348
mac_eeprom_reload(regs);
1349
for (i = 0; i < 6; i++)
1350
writeb(vptr->dev->dev_addr[i], &(regs->PAR[i]));
1353
* clear Pre_ACPI bit.
1355
BYTE_REG_BITS_OFF(CFGA_PACPI, &(regs->CFGA));
1356
mac_set_rx_thresh(regs, vptr->options.rx_thresh);
1357
mac_set_dma_length(regs, vptr->options.DMA_length);
1359
writeb(WOLCFG_SAM | WOLCFG_SAB, ®s->WOLCFGSet);
1361
* Back off algorithm use original IEEE standard
1363
BYTE_REG_BITS_SET(CFGB_OFSET, (CFGB_CRANDOM | CFGB_CAP | CFGB_MBA | CFGB_BAKOPT), ®s->CFGB);
1368
velocity_init_cam_filter(vptr);
1371
* Set packet filter: Receive directed and broadcast address
1373
velocity_set_multi(vptr->dev);
1376
* Enable MII auto-polling
1378
enable_mii_autopoll(regs);
1380
setup_adaptive_interrupts(vptr);
1382
writel(vptr->rx.pool_dma, ®s->RDBaseLo);
1383
writew(vptr->options.numrx - 1, ®s->RDCSize);
1384
mac_rx_queue_run(regs);
1385
mac_rx_queue_wake(regs);
1387
writew(vptr->options.numtx - 1, ®s->TDCSize);
1389
for (i = 0; i < vptr->tx.numq; i++) {
1390
writel(vptr->tx.pool_dma[i], ®s->TDBaseLo[i]);
1391
mac_tx_queue_run(regs, i);
1394
init_flow_control_register(vptr);
1396
writel(CR0_STOP, ®s->CR0Clr);
1397
writel((CR0_DPOLL | CR0_TXON | CR0_RXON | CR0_STRT), ®s->CR0Set);
1399
mii_status = velocity_get_opt_media_mode(vptr);
1400
netif_stop_queue(vptr->dev);
1402
mii_init(vptr, mii_status);
1404
if (velocity_set_media_mode(vptr, mii_status) != VELOCITY_LINK_CHANGE) {
1405
velocity_print_link_status(vptr);
1406
if (!(vptr->mii_status & VELOCITY_LINK_FAIL))
1407
netif_wake_queue(vptr->dev);
1410
enable_flow_control_ability(vptr);
1411
mac_hw_mibs_init(regs);
1412
mac_write_int_mask(vptr->int_mask, regs);
1413
mac_clear_isr(regs);
1418
static void velocity_give_many_rx_descs(struct velocity_info *vptr)
1420
struct mac_regs __iomem *regs = vptr->mac_regs;
1421
int avail, dirty, unusable;
1424
* RD number must be equal to 4X per hardware spec
1425
* (programming guide rev 1.20, p.13)
1427
if (vptr->rx.filled < 4)
1432
unusable = vptr->rx.filled & 0x0003;
1433
dirty = vptr->rx.dirty - unusable;
1434
for (avail = vptr->rx.filled & 0xfffc; avail; avail--) {
1435
dirty = (dirty > 0) ? dirty - 1 : vptr->options.numrx - 1;
1436
vptr->rx.ring[dirty].rdesc0.len |= OWNED_BY_NIC;
1439
writew(vptr->rx.filled & 0xfffc, ®s->RBRDU);
1440
vptr->rx.filled = unusable;
1444
* velocity_init_dma_rings - set up DMA rings
1445
* @vptr: Velocity to set up
1447
* Allocate PCI mapped DMA rings for the receive and transmit layer
1450
static int velocity_init_dma_rings(struct velocity_info *vptr)
1452
struct velocity_opt *opt = &vptr->options;
1453
const unsigned int rx_ring_size = opt->numrx * sizeof(struct rx_desc);
1454
const unsigned int tx_ring_size = opt->numtx * sizeof(struct tx_desc);
1455
struct pci_dev *pdev = vptr->pdev;
1456
dma_addr_t pool_dma;
1461
* Allocate all RD/TD rings a single pool.
1463
* pci_alloc_consistent() fulfills the requirement for 64 bytes
1466
pool = pci_alloc_consistent(pdev, tx_ring_size * vptr->tx.numq +
1467
rx_ring_size, &pool_dma);
1469
dev_err(&pdev->dev, "%s : DMA memory allocation failed.\n",
1474
vptr->rx.ring = pool;
1475
vptr->rx.pool_dma = pool_dma;
1477
pool += rx_ring_size;
1478
pool_dma += rx_ring_size;
1480
for (i = 0; i < vptr->tx.numq; i++) {
1481
vptr->tx.rings[i] = pool;
1482
vptr->tx.pool_dma[i] = pool_dma;
1483
pool += tx_ring_size;
1484
pool_dma += tx_ring_size;
1490
static void velocity_set_rxbufsize(struct velocity_info *vptr, int mtu)
1492
vptr->rx.buf_sz = (mtu <= ETH_DATA_LEN) ? PKT_BUF_SZ : mtu + 32;
1496
* velocity_alloc_rx_buf - allocate aligned receive buffer
1500
* Allocate a new full sized buffer for the reception of a frame and
1501
* map it into PCI space for the hardware to use. The hardware
1502
* requires *64* byte alignment of the buffer which makes life
1503
* less fun than would be ideal.
1505
static int velocity_alloc_rx_buf(struct velocity_info *vptr, int idx)
1507
struct rx_desc *rd = &(vptr->rx.ring[idx]);
1508
struct velocity_rd_info *rd_info = &(vptr->rx.info[idx]);
1510
rd_info->skb = dev_alloc_skb(vptr->rx.buf_sz + 64);
1511
if (rd_info->skb == NULL)
1515
* Do the gymnastics to get the buffer head for data at
1518
skb_reserve(rd_info->skb,
1519
64 - ((unsigned long) rd_info->skb->data & 63));
1520
rd_info->skb_dma = pci_map_single(vptr->pdev, rd_info->skb->data,
1521
vptr->rx.buf_sz, PCI_DMA_FROMDEVICE);
1524
* Fill in the descriptor to match
1527
*((u32 *) & (rd->rdesc0)) = 0;
1528
rd->size = cpu_to_le16(vptr->rx.buf_sz) | RX_INTEN;
1529
rd->pa_low = cpu_to_le32(rd_info->skb_dma);
1535
static int velocity_rx_refill(struct velocity_info *vptr)
1537
int dirty = vptr->rx.dirty, done = 0;
1540
struct rx_desc *rd = vptr->rx.ring + dirty;
1542
/* Fine for an all zero Rx desc at init time as well */
1543
if (rd->rdesc0.len & OWNED_BY_NIC)
1546
if (!vptr->rx.info[dirty].skb) {
1547
if (velocity_alloc_rx_buf(vptr, dirty) < 0)
1551
dirty = (dirty < vptr->options.numrx - 1) ? dirty + 1 : 0;
1552
} while (dirty != vptr->rx.curr);
1555
vptr->rx.dirty = dirty;
1556
vptr->rx.filled += done;
1563
* velocity_free_rd_ring - free receive ring
1564
* @vptr: velocity to clean up
1566
* Free the receive buffers for each ring slot and any
1567
* attached socket buffers that need to go away.
1569
static void velocity_free_rd_ring(struct velocity_info *vptr)
1573
if (vptr->rx.info == NULL)
1576
for (i = 0; i < vptr->options.numrx; i++) {
1577
struct velocity_rd_info *rd_info = &(vptr->rx.info[i]);
1578
struct rx_desc *rd = vptr->rx.ring + i;
1580
memset(rd, 0, sizeof(*rd));
1584
pci_unmap_single(vptr->pdev, rd_info->skb_dma, vptr->rx.buf_sz,
1585
PCI_DMA_FROMDEVICE);
1586
rd_info->skb_dma = 0;
1588
dev_kfree_skb(rd_info->skb);
1589
rd_info->skb = NULL;
1592
kfree(vptr->rx.info);
1593
vptr->rx.info = NULL;
1597
* velocity_init_rd_ring - set up receive ring
1598
* @vptr: velocity to configure
1600
* Allocate and set up the receive buffers for each ring slot and
1601
* assign them to the network adapter.
1603
static int velocity_init_rd_ring(struct velocity_info *vptr)
1607
vptr->rx.info = kcalloc(vptr->options.numrx,
1608
sizeof(struct velocity_rd_info), GFP_KERNEL);
1612
velocity_init_rx_ring_indexes(vptr);
1614
if (velocity_rx_refill(vptr) != vptr->options.numrx) {
1615
VELOCITY_PRT(MSG_LEVEL_ERR, KERN_ERR
1616
"%s: failed to allocate RX buffer.\n", vptr->dev->name);
1617
velocity_free_rd_ring(vptr);
1627
* velocity_init_td_ring - set up transmit ring
1630
* Set up the transmit ring and chain the ring pointers together.
1631
* Returns zero on success or a negative posix errno code for
1634
static int velocity_init_td_ring(struct velocity_info *vptr)
1638
/* Init the TD ring entries */
1639
for (j = 0; j < vptr->tx.numq; j++) {
1641
vptr->tx.infos[j] = kcalloc(vptr->options.numtx,
1642
sizeof(struct velocity_td_info),
1644
if (!vptr->tx.infos[j]) {
1646
kfree(vptr->tx.infos[j]);
1650
vptr->tx.tail[j] = vptr->tx.curr[j] = vptr->tx.used[j] = 0;
1656
* velocity_free_dma_rings - free PCI ring pointers
1657
* @vptr: Velocity to free from
1659
* Clean up the PCI ring buffers allocated to this velocity.
1661
static void velocity_free_dma_rings(struct velocity_info *vptr)
1663
const int size = vptr->options.numrx * sizeof(struct rx_desc) +
1664
vptr->options.numtx * sizeof(struct tx_desc) * vptr->tx.numq;
1666
pci_free_consistent(vptr->pdev, size, vptr->rx.ring, vptr->rx.pool_dma);
1669
static int velocity_init_rings(struct velocity_info *vptr, int mtu)
1673
velocity_set_rxbufsize(vptr, mtu);
1675
ret = velocity_init_dma_rings(vptr);
1679
ret = velocity_init_rd_ring(vptr);
1681
goto err_free_dma_rings_0;
1683
ret = velocity_init_td_ring(vptr);
1685
goto err_free_rd_ring_1;
1690
velocity_free_rd_ring(vptr);
1691
err_free_dma_rings_0:
1692
velocity_free_dma_rings(vptr);
1697
* velocity_free_tx_buf - free transmit buffer
1701
* Release an transmit buffer. If the buffer was preallocated then
1702
* recycle it, if not then unmap the buffer.
1704
static void velocity_free_tx_buf(struct velocity_info *vptr,
1705
struct velocity_td_info *tdinfo, struct tx_desc *td)
1707
struct sk_buff *skb = tdinfo->skb;
1710
* Don't unmap the pre-allocated tx_bufs
1712
if (tdinfo->skb_dma) {
1715
for (i = 0; i < tdinfo->nskb_dma; i++) {
1716
size_t pktlen = max_t(size_t, skb->len, ETH_ZLEN);
1718
/* For scatter-gather */
1719
if (skb_shinfo(skb)->nr_frags > 0)
1720
pktlen = max_t(size_t, pktlen,
1721
td->td_buf[i].size & ~TD_QUEUE);
1723
pci_unmap_single(vptr->pdev, tdinfo->skb_dma[i],
1724
le16_to_cpu(pktlen), PCI_DMA_TODEVICE);
1727
dev_kfree_skb_irq(skb);
1732
* FIXME: could we merge this with velocity_free_tx_buf ?
1734
static void velocity_free_td_ring_entry(struct velocity_info *vptr,
1737
struct velocity_td_info *td_info = &(vptr->tx.infos[q][n]);
1740
if (td_info == NULL)
1744
for (i = 0; i < td_info->nskb_dma; i++) {
1745
if (td_info->skb_dma[i]) {
1746
pci_unmap_single(vptr->pdev, td_info->skb_dma[i],
1747
td_info->skb->len, PCI_DMA_TODEVICE);
1748
td_info->skb_dma[i] = 0;
1751
dev_kfree_skb(td_info->skb);
1752
td_info->skb = NULL;
1757
* velocity_free_td_ring - free td ring
1760
* Free up the transmit ring for this particular velocity adapter.
1761
* We free the ring contents but not the ring itself.
1763
static void velocity_free_td_ring(struct velocity_info *vptr)
1767
for (j = 0; j < vptr->tx.numq; j++) {
1768
if (vptr->tx.infos[j] == NULL)
1770
for (i = 0; i < vptr->options.numtx; i++)
1771
velocity_free_td_ring_entry(vptr, j, i);
1773
kfree(vptr->tx.infos[j]);
1774
vptr->tx.infos[j] = NULL;
1778
static void velocity_free_rings(struct velocity_info *vptr)
1780
velocity_free_td_ring(vptr);
1781
velocity_free_rd_ring(vptr);
1782
velocity_free_dma_rings(vptr);
1786
* velocity_error - handle error from controller
1788
* @status: card status
1790
* Process an error report from the hardware and attempt to recover
1791
* the card itself. At the moment we cannot recover from some
1792
* theoretically impossible errors but this could be fixed using
1793
* the pci_device_failed logic to bounce the hardware
1796
static void velocity_error(struct velocity_info *vptr, int status)
1799
if (status & ISR_TXSTLI) {
1800
struct mac_regs __iomem *regs = vptr->mac_regs;
1802
printk(KERN_ERR "TD structure error TDindex=%hx\n", readw(®s->TDIdx[0]));
1803
BYTE_REG_BITS_ON(TXESR_TDSTR, ®s->TXESR);
1804
writew(TRDCSR_RUN, ®s->TDCSRClr);
1805
netif_stop_queue(vptr->dev);
1807
/* FIXME: port over the pci_device_failed code and use it
1811
if (status & ISR_SRCI) {
1812
struct mac_regs __iomem *regs = vptr->mac_regs;
1815
if (vptr->options.spd_dpx == SPD_DPX_AUTO) {
1816
vptr->mii_status = check_connection_type(regs);
1819
* If it is a 3119, disable frame bursting in
1820
* halfduplex mode and enable it in fullduplex
1823
if (vptr->rev_id < REV_ID_VT3216_A0) {
1824
if (vptr->mii_status & VELOCITY_DUPLEX_FULL)
1825
BYTE_REG_BITS_ON(TCR_TB2BDIS, ®s->TCR);
1827
BYTE_REG_BITS_OFF(TCR_TB2BDIS, ®s->TCR);
1830
* Only enable CD heart beat counter in 10HD mode
1832
if (!(vptr->mii_status & VELOCITY_DUPLEX_FULL) && (vptr->mii_status & VELOCITY_SPEED_10))
1833
BYTE_REG_BITS_OFF(TESTCFG_HBDIS, ®s->TESTCFG);
1835
BYTE_REG_BITS_ON(TESTCFG_HBDIS, ®s->TESTCFG);
1837
setup_queue_timers(vptr);
1840
* Get link status from PHYSR0
1842
linked = readb(®s->PHYSR0) & PHYSR0_LINKGD;
1845
vptr->mii_status &= ~VELOCITY_LINK_FAIL;
1846
netif_carrier_on(vptr->dev);
1848
vptr->mii_status |= VELOCITY_LINK_FAIL;
1849
netif_carrier_off(vptr->dev);
1852
velocity_print_link_status(vptr);
1853
enable_flow_control_ability(vptr);
1856
* Re-enable auto-polling because SRCI will disable
1860
enable_mii_autopoll(regs);
1862
if (vptr->mii_status & VELOCITY_LINK_FAIL)
1863
netif_stop_queue(vptr->dev);
1865
netif_wake_queue(vptr->dev);
1868
if (status & ISR_MIBFI)
1869
velocity_update_hw_mibs(vptr);
1870
if (status & ISR_LSTEI)
1871
mac_rx_queue_wake(vptr->mac_regs);
1875
* tx_srv - transmit interrupt service
1878
* Scan the queues looking for transmitted packets that
1879
* we can complete and clean up. Update any statistics as
1882
static int velocity_tx_srv(struct velocity_info *vptr)
1889
struct velocity_td_info *tdinfo;
1890
struct net_device_stats *stats = &vptr->dev->stats;
1892
for (qnum = 0; qnum < vptr->tx.numq; qnum++) {
1893
for (idx = vptr->tx.tail[qnum]; vptr->tx.used[qnum] > 0;
1894
idx = (idx + 1) % vptr->options.numtx) {
1899
td = &(vptr->tx.rings[qnum][idx]);
1900
tdinfo = &(vptr->tx.infos[qnum][idx]);
1902
if (td->tdesc0.len & OWNED_BY_NIC)
1908
if (td->tdesc0.TSR & TSR0_TERR) {
1910
stats->tx_dropped++;
1911
if (td->tdesc0.TSR & TSR0_CDH)
1912
stats->tx_heartbeat_errors++;
1913
if (td->tdesc0.TSR & TSR0_CRS)
1914
stats->tx_carrier_errors++;
1915
if (td->tdesc0.TSR & TSR0_ABT)
1916
stats->tx_aborted_errors++;
1917
if (td->tdesc0.TSR & TSR0_OWC)
1918
stats->tx_window_errors++;
1920
stats->tx_packets++;
1921
stats->tx_bytes += tdinfo->skb->len;
1923
velocity_free_tx_buf(vptr, tdinfo, td);
1924
vptr->tx.used[qnum]--;
1926
vptr->tx.tail[qnum] = idx;
1928
if (AVAIL_TD(vptr, qnum) < 1)
1932
* Look to see if we should kick the transmit network
1933
* layer for more work.
1935
if (netif_queue_stopped(vptr->dev) && (full == 0) &&
1936
(!(vptr->mii_status & VELOCITY_LINK_FAIL))) {
1937
netif_wake_queue(vptr->dev);
1943
* velocity_rx_csum - checksum process
1944
* @rd: receive packet descriptor
1945
* @skb: network layer packet buffer
1947
* Process the status bits for the received packet and determine
1948
* if the checksum was computed and verified by the hardware
1950
static inline void velocity_rx_csum(struct rx_desc *rd, struct sk_buff *skb)
1952
skb_checksum_none_assert(skb);
1954
if (rd->rdesc1.CSM & CSM_IPKT) {
1955
if (rd->rdesc1.CSM & CSM_IPOK) {
1956
if ((rd->rdesc1.CSM & CSM_TCPKT) ||
1957
(rd->rdesc1.CSM & CSM_UDPKT)) {
1958
if (!(rd->rdesc1.CSM & CSM_TUPOK))
1961
skb->ip_summed = CHECKSUM_UNNECESSARY;
1967
* velocity_rx_copy - in place Rx copy for small packets
1968
* @rx_skb: network layer packet buffer candidate
1969
* @pkt_size: received data size
1970
* @rd: receive packet descriptor
1971
* @dev: network device
1973
* Replace the current skb that is scheduled for Rx processing by a
1974
* shorter, immediately allocated skb, if the received packet is small
1975
* enough. This function returns a negative value if the received
1976
* packet is too big or if memory is exhausted.
1978
static int velocity_rx_copy(struct sk_buff **rx_skb, int pkt_size,
1979
struct velocity_info *vptr)
1982
if (pkt_size < rx_copybreak) {
1983
struct sk_buff *new_skb;
1985
new_skb = netdev_alloc_skb_ip_align(vptr->dev, pkt_size);
1987
new_skb->ip_summed = rx_skb[0]->ip_summed;
1988
skb_copy_from_linear_data(*rx_skb, new_skb->data, pkt_size);
1998
* velocity_iph_realign - IP header alignment
1999
* @vptr: velocity we are handling
2000
* @skb: network layer packet buffer
2001
* @pkt_size: received data size
2003
* Align IP header on a 2 bytes boundary. This behavior can be
2004
* configured by the user.
2006
static inline void velocity_iph_realign(struct velocity_info *vptr,
2007
struct sk_buff *skb, int pkt_size)
2009
if (vptr->flags & VELOCITY_FLAGS_IP_ALIGN) {
2010
memmove(skb->data + 2, skb->data, pkt_size);
2011
skb_reserve(skb, 2);
2016
* velocity_receive_frame - received packet processor
2017
* @vptr: velocity we are handling
2020
* A packet has arrived. We process the packet and if appropriate
2021
* pass the frame up the network stack
2023
static int velocity_receive_frame(struct velocity_info *vptr, int idx)
2025
void (*pci_action)(struct pci_dev *, dma_addr_t, size_t, int);
2026
struct net_device_stats *stats = &vptr->dev->stats;
2027
struct velocity_rd_info *rd_info = &(vptr->rx.info[idx]);
2028
struct rx_desc *rd = &(vptr->rx.ring[idx]);
2029
int pkt_len = le16_to_cpu(rd->rdesc0.len) & 0x3fff;
2030
struct sk_buff *skb;
2032
if (rd->rdesc0.RSR & (RSR_STP | RSR_EDP)) {
2033
VELOCITY_PRT(MSG_LEVEL_VERBOSE, KERN_ERR " %s : the received frame span multple RDs.\n", vptr->dev->name);
2034
stats->rx_length_errors++;
2038
if (rd->rdesc0.RSR & RSR_MAR)
2043
pci_dma_sync_single_for_cpu(vptr->pdev, rd_info->skb_dma,
2044
vptr->rx.buf_sz, PCI_DMA_FROMDEVICE);
2047
* Drop frame not meeting IEEE 802.3
2050
if (vptr->flags & VELOCITY_FLAGS_VAL_PKT_LEN) {
2051
if (rd->rdesc0.RSR & RSR_RL) {
2052
stats->rx_length_errors++;
2057
pci_action = pci_dma_sync_single_for_device;
2059
velocity_rx_csum(rd, skb);
2061
if (velocity_rx_copy(&skb, pkt_len, vptr) < 0) {
2062
velocity_iph_realign(vptr, skb, pkt_len);
2063
pci_action = pci_unmap_single;
2064
rd_info->skb = NULL;
2067
pci_action(vptr->pdev, rd_info->skb_dma, vptr->rx.buf_sz,
2068
PCI_DMA_FROMDEVICE);
2070
skb_put(skb, pkt_len - 4);
2071
skb->protocol = eth_type_trans(skb, vptr->dev);
2073
if (rd->rdesc0.RSR & RSR_DETAG) {
2074
u16 vid = swab16(le16_to_cpu(rd->rdesc1.PQTAG));
2076
__vlan_hwaccel_put_tag(skb, vid);
2080
stats->rx_bytes += pkt_len;
2081
stats->rx_packets++;
2087
* velocity_rx_srv - service RX interrupt
2090
* Walk the receive ring of the velocity adapter and remove
2091
* any received packets from the receive queue. Hand the ring
2092
* slots back to the adapter for reuse.
2094
static int velocity_rx_srv(struct velocity_info *vptr, int budget_left)
2096
struct net_device_stats *stats = &vptr->dev->stats;
2097
int rd_curr = vptr->rx.curr;
2100
while (works < budget_left) {
2101
struct rx_desc *rd = vptr->rx.ring + rd_curr;
2103
if (!vptr->rx.info[rd_curr].skb)
2106
if (rd->rdesc0.len & OWNED_BY_NIC)
2112
* Don't drop CE or RL error frame although RXOK is off
2114
if (rd->rdesc0.RSR & (RSR_RXOK | RSR_CE | RSR_RL)) {
2115
if (velocity_receive_frame(vptr, rd_curr) < 0)
2116
stats->rx_dropped++;
2118
if (rd->rdesc0.RSR & RSR_CRC)
2119
stats->rx_crc_errors++;
2120
if (rd->rdesc0.RSR & RSR_FAE)
2121
stats->rx_frame_errors++;
2123
stats->rx_dropped++;
2126
rd->size |= RX_INTEN;
2129
if (rd_curr >= vptr->options.numrx)
2134
vptr->rx.curr = rd_curr;
2136
if ((works > 0) && (velocity_rx_refill(vptr) > 0))
2137
velocity_give_many_rx_descs(vptr);
2143
static int velocity_poll(struct napi_struct *napi, int budget)
2145
struct velocity_info *vptr = container_of(napi,
2146
struct velocity_info, napi);
2147
unsigned int rx_done;
2148
unsigned long flags;
2150
spin_lock_irqsave(&vptr->lock, flags);
2152
* Do rx and tx twice for performance (taken from the VIA
2153
* out-of-tree driver).
2155
rx_done = velocity_rx_srv(vptr, budget / 2);
2156
velocity_tx_srv(vptr);
2157
rx_done += velocity_rx_srv(vptr, budget - rx_done);
2158
velocity_tx_srv(vptr);
2160
/* If budget not fully consumed, exit the polling mode */
2161
if (rx_done < budget) {
2162
napi_complete(napi);
2163
mac_enable_int(vptr->mac_regs);
2165
spin_unlock_irqrestore(&vptr->lock, flags);
2171
* velocity_intr - interrupt callback
2172
* @irq: interrupt number
2173
* @dev_instance: interrupting device
2175
* Called whenever an interrupt is generated by the velocity
2176
* adapter IRQ line. We may not be the source of the interrupt
2177
* and need to identify initially if we are, and if not exit as
2178
* efficiently as possible.
2180
static irqreturn_t velocity_intr(int irq, void *dev_instance)
2182
struct net_device *dev = dev_instance;
2183
struct velocity_info *vptr = netdev_priv(dev);
2186
spin_lock(&vptr->lock);
2187
isr_status = mac_read_isr(vptr->mac_regs);
2190
if (isr_status == 0) {
2191
spin_unlock(&vptr->lock);
2195
/* Ack the interrupt */
2196
mac_write_isr(vptr->mac_regs, isr_status);
2198
if (likely(napi_schedule_prep(&vptr->napi))) {
2199
mac_disable_int(vptr->mac_regs);
2200
__napi_schedule(&vptr->napi);
2203
if (isr_status & (~(ISR_PRXI | ISR_PPRXI | ISR_PTXI | ISR_PPTXI)))
2204
velocity_error(vptr, isr_status);
2206
spin_unlock(&vptr->lock);
2212
* velocity_open - interface activation callback
2213
* @dev: network layer device to open
2215
* Called when the network layer brings the interface up. Returns
2216
* a negative posix error code on failure, or zero on success.
2218
* All the ring allocation and set up is done on open for this
2219
* adapter to minimise memory usage when inactive
2221
static int velocity_open(struct net_device *dev)
2223
struct velocity_info *vptr = netdev_priv(dev);
2226
ret = velocity_init_rings(vptr, dev->mtu);
2230
/* Ensure chip is running */
2231
pci_set_power_state(vptr->pdev, PCI_D0);
2233
velocity_init_registers(vptr, VELOCITY_INIT_COLD);
2235
ret = request_irq(vptr->pdev->irq, velocity_intr, IRQF_SHARED,
2238
/* Power down the chip */
2239
pci_set_power_state(vptr->pdev, PCI_D3hot);
2240
velocity_free_rings(vptr);
2244
velocity_give_many_rx_descs(vptr);
2246
mac_enable_int(vptr->mac_regs);
2247
netif_start_queue(dev);
2248
napi_enable(&vptr->napi);
2249
vptr->flags |= VELOCITY_FLAGS_OPENED;
2255
* velocity_shutdown - shut down the chip
2256
* @vptr: velocity to deactivate
2258
* Shuts down the internal operations of the velocity and
2259
* disables interrupts, autopolling, transmit and receive
2261
static void velocity_shutdown(struct velocity_info *vptr)
2263
struct mac_regs __iomem *regs = vptr->mac_regs;
2264
mac_disable_int(regs);
2265
writel(CR0_STOP, ®s->CR0Set);
2266
writew(0xFFFF, ®s->TDCSRClr);
2267
writeb(0xFF, ®s->RDCSRClr);
2268
safe_disable_mii_autopoll(regs);
2269
mac_clear_isr(regs);
2273
* velocity_change_mtu - MTU change callback
2274
* @dev: network device
2275
* @new_mtu: desired MTU
2277
* Handle requests from the networking layer for MTU change on
2278
* this interface. It gets called on a change by the network layer.
2279
* Return zero for success or negative posix error code.
2281
static int velocity_change_mtu(struct net_device *dev, int new_mtu)
2283
struct velocity_info *vptr = netdev_priv(dev);
2286
if ((new_mtu < VELOCITY_MIN_MTU) || new_mtu > (VELOCITY_MAX_MTU)) {
2287
VELOCITY_PRT(MSG_LEVEL_ERR, KERN_NOTICE "%s: Invalid MTU.\n",
2293
if (!netif_running(dev)) {
2298
if (dev->mtu != new_mtu) {
2299
struct velocity_info *tmp_vptr;
2300
unsigned long flags;
2304
tmp_vptr = kzalloc(sizeof(*tmp_vptr), GFP_KERNEL);
2310
tmp_vptr->dev = dev;
2311
tmp_vptr->pdev = vptr->pdev;
2312
tmp_vptr->options = vptr->options;
2313
tmp_vptr->tx.numq = vptr->tx.numq;
2315
ret = velocity_init_rings(tmp_vptr, new_mtu);
2317
goto out_free_tmp_vptr_1;
2319
spin_lock_irqsave(&vptr->lock, flags);
2321
netif_stop_queue(dev);
2322
velocity_shutdown(vptr);
2327
vptr->rx = tmp_vptr->rx;
2328
vptr->tx = tmp_vptr->tx;
2335
velocity_init_registers(vptr, VELOCITY_INIT_COLD);
2337
velocity_give_many_rx_descs(vptr);
2339
mac_enable_int(vptr->mac_regs);
2340
netif_start_queue(dev);
2342
spin_unlock_irqrestore(&vptr->lock, flags);
2344
velocity_free_rings(tmp_vptr);
2346
out_free_tmp_vptr_1:
2354
* velocity_mii_ioctl - MII ioctl handler
2355
* @dev: network device
2356
* @ifr: the ifreq block for the ioctl
2359
* Process MII requests made via ioctl from the network layer. These
2360
* are used by tools like kudzu to interrogate the link state of the
2363
static int velocity_mii_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
2365
struct velocity_info *vptr = netdev_priv(dev);
2366
struct mac_regs __iomem *regs = vptr->mac_regs;
2367
unsigned long flags;
2368
struct mii_ioctl_data *miidata = if_mii(ifr);
2373
miidata->phy_id = readb(®s->MIIADR) & 0x1f;
2376
if (velocity_mii_read(vptr->mac_regs, miidata->reg_num & 0x1f, &(miidata->val_out)) < 0)
2380
spin_lock_irqsave(&vptr->lock, flags);
2381
err = velocity_mii_write(vptr->mac_regs, miidata->reg_num & 0x1f, miidata->val_in);
2382
spin_unlock_irqrestore(&vptr->lock, flags);
2383
check_connection_type(vptr->mac_regs);
2394
* velocity_ioctl - ioctl entry point
2395
* @dev: network device
2396
* @rq: interface request ioctl
2397
* @cmd: command code
2399
* Called when the user issues an ioctl request to the network
2400
* device in question. The velocity interface supports MII.
2402
static int velocity_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2404
struct velocity_info *vptr = netdev_priv(dev);
2407
/* If we are asked for information and the device is power
2408
saving then we need to bring the device back up to talk to it */
2410
if (!netif_running(dev))
2411
pci_set_power_state(vptr->pdev, PCI_D0);
2414
case SIOCGMIIPHY: /* Get address of MII PHY in use. */
2415
case SIOCGMIIREG: /* Read MII PHY register. */
2416
case SIOCSMIIREG: /* Write to MII PHY register. */
2417
ret = velocity_mii_ioctl(dev, rq, cmd);
2423
if (!netif_running(dev))
2424
pci_set_power_state(vptr->pdev, PCI_D3hot);
2431
* velocity_get_status - statistics callback
2432
* @dev: network device
2434
* Callback from the network layer to allow driver statistics
2435
* to be resynchronized with hardware collected state. In the
2436
* case of the velocity we need to pull the MIB counters from
2437
* the hardware into the counters before letting the network
2438
* layer display them.
2440
static struct net_device_stats *velocity_get_stats(struct net_device *dev)
2442
struct velocity_info *vptr = netdev_priv(dev);
2444
/* If the hardware is down, don't touch MII */
2445
if (!netif_running(dev))
2448
spin_lock_irq(&vptr->lock);
2449
velocity_update_hw_mibs(vptr);
2450
spin_unlock_irq(&vptr->lock);
2452
dev->stats.rx_packets = vptr->mib_counter[HW_MIB_ifRxAllPkts];
2453
dev->stats.rx_errors = vptr->mib_counter[HW_MIB_ifRxErrorPkts];
2454
dev->stats.rx_length_errors = vptr->mib_counter[HW_MIB_ifInRangeLengthErrors];
2456
// unsigned long rx_dropped; /* no space in linux buffers */
2457
dev->stats.collisions = vptr->mib_counter[HW_MIB_ifTxEtherCollisions];
2458
/* detailed rx_errors: */
2459
// unsigned long rx_length_errors;
2460
// unsigned long rx_over_errors; /* receiver ring buff overflow */
2461
dev->stats.rx_crc_errors = vptr->mib_counter[HW_MIB_ifRxPktCRCE];
2462
// unsigned long rx_frame_errors; /* recv'd frame alignment error */
2463
// unsigned long rx_fifo_errors; /* recv'r fifo overrun */
2464
// unsigned long rx_missed_errors; /* receiver missed packet */
2466
/* detailed tx_errors */
2467
// unsigned long tx_fifo_errors;
2473
* velocity_close - close adapter callback
2474
* @dev: network device
2476
* Callback from the network layer when the velocity is being
2477
* deactivated by the network layer
2479
static int velocity_close(struct net_device *dev)
2481
struct velocity_info *vptr = netdev_priv(dev);
2483
napi_disable(&vptr->napi);
2484
netif_stop_queue(dev);
2485
velocity_shutdown(vptr);
2487
if (vptr->flags & VELOCITY_FLAGS_WOL_ENABLED)
2488
velocity_get_ip(vptr);
2490
free_irq(dev->irq, dev);
2492
velocity_free_rings(vptr);
2494
vptr->flags &= (~VELOCITY_FLAGS_OPENED);
2499
* velocity_xmit - transmit packet callback
2500
* @skb: buffer to transmit
2501
* @dev: network device
2503
* Called by the networ layer to request a packet is queued to
2504
* the velocity. Returns zero on success.
2506
static netdev_tx_t velocity_xmit(struct sk_buff *skb,
2507
struct net_device *dev)
2509
struct velocity_info *vptr = netdev_priv(dev);
2511
struct tx_desc *td_ptr;
2512
struct velocity_td_info *tdinfo;
2513
unsigned long flags;
2518
if (skb_padto(skb, ETH_ZLEN))
2521
/* The hardware can handle at most 7 memory segments, so merge
2522
* the skb if there are more */
2523
if (skb_shinfo(skb)->nr_frags > 6 && __skb_linearize(skb)) {
2525
return NETDEV_TX_OK;
2528
pktlen = skb_shinfo(skb)->nr_frags == 0 ?
2529
max_t(unsigned int, skb->len, ETH_ZLEN) :
2532
spin_lock_irqsave(&vptr->lock, flags);
2534
index = vptr->tx.curr[qnum];
2535
td_ptr = &(vptr->tx.rings[qnum][index]);
2536
tdinfo = &(vptr->tx.infos[qnum][index]);
2538
td_ptr->tdesc1.TCR = TCR0_TIC;
2539
td_ptr->td_buf[0].size &= ~TD_QUEUE;
2542
* Map the linear network buffer into PCI space and
2543
* add it to the transmit ring.
2546
tdinfo->skb_dma[0] = pci_map_single(vptr->pdev, skb->data, pktlen, PCI_DMA_TODEVICE);
2547
td_ptr->tdesc0.len = cpu_to_le16(pktlen);
2548
td_ptr->td_buf[0].pa_low = cpu_to_le32(tdinfo->skb_dma[0]);
2549
td_ptr->td_buf[0].pa_high = 0;
2550
td_ptr->td_buf[0].size = cpu_to_le16(pktlen);
2552
/* Handle fragments */
2553
for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
2554
const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
2556
tdinfo->skb_dma[i + 1] = skb_frag_dma_map(&vptr->pdev->dev,
2558
skb_frag_size(frag),
2561
td_ptr->td_buf[i + 1].pa_low = cpu_to_le32(tdinfo->skb_dma[i + 1]);
2562
td_ptr->td_buf[i + 1].pa_high = 0;
2563
td_ptr->td_buf[i + 1].size = cpu_to_le16(skb_frag_size(frag));
2565
tdinfo->nskb_dma = i + 1;
2567
td_ptr->tdesc1.cmd = TCPLS_NORMAL + (tdinfo->nskb_dma + 1) * 16;
2569
if (vlan_tx_tag_present(skb)) {
2570
td_ptr->tdesc1.vlan = cpu_to_le16(vlan_tx_tag_get(skb));
2571
td_ptr->tdesc1.TCR |= TCR0_VETAG;
2575
* Handle hardware checksum
2577
if (skb->ip_summed == CHECKSUM_PARTIAL) {
2578
const struct iphdr *ip = ip_hdr(skb);
2579
if (ip->protocol == IPPROTO_TCP)
2580
td_ptr->tdesc1.TCR |= TCR0_TCPCK;
2581
else if (ip->protocol == IPPROTO_UDP)
2582
td_ptr->tdesc1.TCR |= (TCR0_UDPCK);
2583
td_ptr->tdesc1.TCR |= TCR0_IPCK;
2588
prev = vptr->options.numtx - 1;
2589
td_ptr->tdesc0.len |= OWNED_BY_NIC;
2590
vptr->tx.used[qnum]++;
2591
vptr->tx.curr[qnum] = (index + 1) % vptr->options.numtx;
2593
if (AVAIL_TD(vptr, qnum) < 1)
2594
netif_stop_queue(dev);
2596
td_ptr = &(vptr->tx.rings[qnum][prev]);
2597
td_ptr->td_buf[0].size |= TD_QUEUE;
2598
mac_tx_queue_wake(vptr->mac_regs, qnum);
2600
spin_unlock_irqrestore(&vptr->lock, flags);
2602
return NETDEV_TX_OK;
2605
static const struct net_device_ops velocity_netdev_ops = {
2606
.ndo_open = velocity_open,
2607
.ndo_stop = velocity_close,
2608
.ndo_start_xmit = velocity_xmit,
2609
.ndo_get_stats = velocity_get_stats,
2610
.ndo_validate_addr = eth_validate_addr,
2611
.ndo_set_mac_address = eth_mac_addr,
2612
.ndo_set_rx_mode = velocity_set_multi,
2613
.ndo_change_mtu = velocity_change_mtu,
2614
.ndo_do_ioctl = velocity_ioctl,
2615
.ndo_vlan_rx_add_vid = velocity_vlan_rx_add_vid,
2616
.ndo_vlan_rx_kill_vid = velocity_vlan_rx_kill_vid,
2620
* velocity_init_info - init private data
2622
* @vptr: Velocity info
2625
* Set up the initial velocity_info struct for the device that has been
2628
static void __devinit velocity_init_info(struct pci_dev *pdev,
2629
struct velocity_info *vptr,
2630
const struct velocity_info_tbl *info)
2632
memset(vptr, 0, sizeof(struct velocity_info));
2635
vptr->chip_id = info->chip_id;
2636
vptr->tx.numq = info->txqueue;
2637
vptr->multicast_limit = MCAM_SIZE;
2638
spin_lock_init(&vptr->lock);
2642
* velocity_get_pci_info - retrieve PCI info for device
2643
* @vptr: velocity device
2644
* @pdev: PCI device it matches
2646
* Retrieve the PCI configuration space data that interests us from
2647
* the kernel PCI layer
2649
static int __devinit velocity_get_pci_info(struct velocity_info *vptr, struct pci_dev *pdev)
2651
vptr->rev_id = pdev->revision;
2653
pci_set_master(pdev);
2655
vptr->ioaddr = pci_resource_start(pdev, 0);
2656
vptr->memaddr = pci_resource_start(pdev, 1);
2658
if (!(pci_resource_flags(pdev, 0) & IORESOURCE_IO)) {
2660
"region #0 is not an I/O resource, aborting.\n");
2664
if ((pci_resource_flags(pdev, 1) & IORESOURCE_IO)) {
2666
"region #1 is an I/O resource, aborting.\n");
2670
if (pci_resource_len(pdev, 1) < VELOCITY_IO_SIZE) {
2671
dev_err(&pdev->dev, "region #1 is too small.\n");
2680
* velocity_print_info - per driver data
2683
* Print per driver data as the kernel driver finds Velocity
2686
static void __devinit velocity_print_info(struct velocity_info *vptr)
2688
struct net_device *dev = vptr->dev;
2690
printk(KERN_INFO "%s: %s\n", dev->name, get_chip_name(vptr->chip_id));
2691
printk(KERN_INFO "%s: Ethernet Address: %pM\n",
2692
dev->name, dev->dev_addr);
2695
static u32 velocity_get_link(struct net_device *dev)
2697
struct velocity_info *vptr = netdev_priv(dev);
2698
struct mac_regs __iomem *regs = vptr->mac_regs;
2699
return BYTE_REG_BITS_IS_ON(PHYSR0_LINKGD, ®s->PHYSR0) ? 1 : 0;
2703
* velocity_found1 - set up discovered velocity card
2705
* @ent: PCI device table entry that matched
2707
* Configure a discovered adapter from scratch. Return a negative
2708
* errno error code on failure paths.
2710
static int __devinit velocity_found1(struct pci_dev *pdev, const struct pci_device_id *ent)
2712
static int first = 1;
2713
struct net_device *dev;
2715
const char *drv_string;
2716
const struct velocity_info_tbl *info = &chip_info_table[ent->driver_data];
2717
struct velocity_info *vptr;
2718
struct mac_regs __iomem *regs;
2721
/* FIXME: this driver, like almost all other ethernet drivers,
2722
* can support more than MAX_UNITS.
2724
if (velocity_nics >= MAX_UNITS) {
2725
dev_notice(&pdev->dev, "already found %d NICs.\n",
2730
dev = alloc_etherdev(sizeof(struct velocity_info));
2732
dev_err(&pdev->dev, "allocate net device failed.\n");
2736
/* Chain it all together */
2738
SET_NETDEV_DEV(dev, &pdev->dev);
2739
vptr = netdev_priv(dev);
2743
printk(KERN_INFO "%s Ver. %s\n",
2744
VELOCITY_FULL_DRV_NAM, VELOCITY_VERSION);
2745
printk(KERN_INFO "Copyright (c) 2002, 2003 VIA Networking Technologies, Inc.\n");
2746
printk(KERN_INFO "Copyright (c) 2004 Red Hat Inc.\n");
2750
velocity_init_info(pdev, vptr, info);
2754
ret = pci_enable_device(pdev);
2758
dev->irq = pdev->irq;
2760
ret = velocity_get_pci_info(vptr, pdev);
2762
/* error message already printed */
2766
ret = pci_request_regions(pdev, VELOCITY_NAME);
2768
dev_err(&pdev->dev, "No PCI resources.\n");
2772
regs = ioremap(vptr->memaddr, VELOCITY_IO_SIZE);
2775
goto err_release_res;
2778
vptr->mac_regs = regs;
2780
mac_wol_reset(regs);
2782
dev->base_addr = vptr->ioaddr;
2784
for (i = 0; i < 6; i++)
2785
dev->dev_addr[i] = readb(®s->PAR[i]);
2788
drv_string = dev_driver_string(&pdev->dev);
2790
velocity_get_options(&vptr->options, velocity_nics, drv_string);
2793
* Mask out the options cannot be set to the chip
2796
vptr->options.flags &= info->flags;
2799
* Enable the chip specified capbilities
2802
vptr->flags = vptr->options.flags | (info->flags & 0xFF000000UL);
2804
vptr->wol_opts = vptr->options.wol_opts;
2805
vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
2807
vptr->phy_id = MII_GET_PHY_ID(vptr->mac_regs);
2809
dev->irq = pdev->irq;
2810
dev->netdev_ops = &velocity_netdev_ops;
2811
dev->ethtool_ops = &velocity_ethtool_ops;
2812
netif_napi_add(dev, &vptr->napi, velocity_poll, VELOCITY_NAPI_WEIGHT);
2814
dev->hw_features = NETIF_F_IP_CSUM | NETIF_F_SG | NETIF_F_HW_VLAN_TX;
2815
dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER |
2816
NETIF_F_HW_VLAN_RX | NETIF_F_IP_CSUM;
2818
ret = register_netdev(dev);
2822
if (!velocity_get_link(dev)) {
2823
netif_carrier_off(dev);
2824
vptr->mii_status |= VELOCITY_LINK_FAIL;
2827
velocity_print_info(vptr);
2828
pci_set_drvdata(pdev, dev);
2830
/* and leave the chip powered down */
2832
pci_set_power_state(pdev, PCI_D3hot);
2840
pci_release_regions(pdev);
2842
pci_disable_device(pdev);
2850
* wol_calc_crc - WOL CRC
2851
* @pattern: data pattern
2852
* @mask_pattern: mask
2854
* Compute the wake on lan crc hashes for the packet header
2855
* we are interested in.
2857
static u16 wol_calc_crc(int size, u8 *pattern, u8 *mask_pattern)
2863
for (i = 0; i < size; i++) {
2864
mask = mask_pattern[i];
2866
/* Skip this loop if the mask equals to zero */
2870
for (j = 0; j < 8; j++) {
2871
if ((mask & 0x01) == 0) {
2876
crc = crc_ccitt(crc, &(pattern[i * 8 + j]), 1);
2879
/* Finally, invert the result once to get the correct data */
2881
return bitrev32(crc) >> 16;
2885
* velocity_set_wol - set up for wake on lan
2886
* @vptr: velocity to set WOL status on
2888
* Set a card up for wake on lan either by unicast or by
2891
* FIXME: check static buffer is safe here
2893
static int velocity_set_wol(struct velocity_info *vptr)
2895
struct mac_regs __iomem *regs = vptr->mac_regs;
2896
enum speed_opt spd_dpx = vptr->options.spd_dpx;
2900
static u32 mask_pattern[2][4] = {
2901
{0x00203000, 0x000003C0, 0x00000000, 0x0000000}, /* ARP */
2902
{0xfffff000, 0xffffffff, 0xffffffff, 0x000ffff} /* Magic Packet */
2905
writew(0xFFFF, ®s->WOLCRClr);
2906
writeb(WOLCFG_SAB | WOLCFG_SAM, ®s->WOLCFGSet);
2907
writew(WOLCR_MAGIC_EN, ®s->WOLCRSet);
2910
if (vptr->wol_opts & VELOCITY_WOL_PHY)
2911
writew((WOLCR_LINKON_EN|WOLCR_LINKOFF_EN), ®s->WOLCRSet);
2914
if (vptr->wol_opts & VELOCITY_WOL_UCAST)
2915
writew(WOLCR_UNICAST_EN, ®s->WOLCRSet);
2917
if (vptr->wol_opts & VELOCITY_WOL_ARP) {
2918
struct arp_packet *arp = (struct arp_packet *) buf;
2920
memset(buf, 0, sizeof(struct arp_packet) + 7);
2922
for (i = 0; i < 4; i++)
2923
writel(mask_pattern[0][i], ®s->ByteMask[0][i]);
2925
arp->type = htons(ETH_P_ARP);
2926
arp->ar_op = htons(1);
2928
memcpy(arp->ar_tip, vptr->ip_addr, 4);
2930
crc = wol_calc_crc((sizeof(struct arp_packet) + 7) / 8, buf,
2931
(u8 *) & mask_pattern[0][0]);
2933
writew(crc, ®s->PatternCRC[0]);
2934
writew(WOLCR_ARP_EN, ®s->WOLCRSet);
2937
BYTE_REG_BITS_ON(PWCFG_WOLTYPE, ®s->PWCFGSet);
2938
BYTE_REG_BITS_ON(PWCFG_LEGACY_WOLEN, ®s->PWCFGSet);
2940
writew(0x0FFF, ®s->WOLSRClr);
2942
if (spd_dpx == SPD_DPX_1000_FULL)
2945
if (spd_dpx != SPD_DPX_AUTO)
2946
goto advertise_done;
2948
if (vptr->mii_status & VELOCITY_AUTONEG_ENABLE) {
2949
if (PHYID_GET_PHY_ID(vptr->phy_id) == PHYID_CICADA_CS8201)
2950
MII_REG_BITS_ON(AUXCR_MDPPS, MII_NCONFIG, vptr->mac_regs);
2952
MII_REG_BITS_OFF(ADVERTISE_1000FULL | ADVERTISE_1000HALF, MII_CTRL1000, vptr->mac_regs);
2955
if (vptr->mii_status & VELOCITY_SPEED_1000)
2956
MII_REG_BITS_ON(BMCR_ANRESTART, MII_BMCR, vptr->mac_regs);
2959
BYTE_REG_BITS_ON(CHIPGCR_FCMODE, ®s->CHIPGCR);
2963
GCR = readb(®s->CHIPGCR);
2964
GCR = (GCR & ~CHIPGCR_FCGMII) | CHIPGCR_FCFDX;
2965
writeb(GCR, ®s->CHIPGCR);
2969
BYTE_REG_BITS_OFF(ISR_PWEI, ®s->ISR);
2970
/* Turn on SWPTAG just before entering power mode */
2971
BYTE_REG_BITS_ON(STICKHW_SWPTAG, ®s->STICKHW);
2972
/* Go to bed ..... */
2973
BYTE_REG_BITS_ON((STICKHW_DS1 | STICKHW_DS0), ®s->STICKHW);
2979
* velocity_save_context - save registers
2981
* @context: buffer for stored context
2983
* Retrieve the current configuration from the velocity hardware
2984
* and stash it in the context structure, for use by the context
2985
* restore functions. This allows us to save things we need across
2988
static void velocity_save_context(struct velocity_info *vptr, struct velocity_context *context)
2990
struct mac_regs __iomem *regs = vptr->mac_regs;
2992
u8 __iomem *ptr = (u8 __iomem *)regs;
2994
for (i = MAC_REG_PAR; i < MAC_REG_CR0_CLR; i += 4)
2995
*((u32 *) (context->mac_reg + i)) = readl(ptr + i);
2997
for (i = MAC_REG_MAR; i < MAC_REG_TDCSR_CLR; i += 4)
2998
*((u32 *) (context->mac_reg + i)) = readl(ptr + i);
3000
for (i = MAC_REG_RDBASE_LO; i < MAC_REG_FIFO_TEST0; i += 4)
3001
*((u32 *) (context->mac_reg + i)) = readl(ptr + i);
3005
static int velocity_suspend(struct pci_dev *pdev, pm_message_t state)
3007
struct net_device *dev = pci_get_drvdata(pdev);
3008
struct velocity_info *vptr = netdev_priv(dev);
3009
unsigned long flags;
3011
if (!netif_running(vptr->dev))
3014
netif_device_detach(vptr->dev);
3016
spin_lock_irqsave(&vptr->lock, flags);
3017
pci_save_state(pdev);
3019
if (vptr->flags & VELOCITY_FLAGS_WOL_ENABLED) {
3020
velocity_get_ip(vptr);
3021
velocity_save_context(vptr, &vptr->context);
3022
velocity_shutdown(vptr);
3023
velocity_set_wol(vptr);
3024
pci_enable_wake(pdev, PCI_D3hot, 1);
3025
pci_set_power_state(pdev, PCI_D3hot);
3027
velocity_save_context(vptr, &vptr->context);
3028
velocity_shutdown(vptr);
3029
pci_disable_device(pdev);
3030
pci_set_power_state(pdev, pci_choose_state(pdev, state));
3033
spin_unlock_irqrestore(&vptr->lock, flags);
3038
* velocity_restore_context - restore registers
3040
* @context: buffer for stored context
3042
* Reload the register configuration from the velocity context
3043
* created by velocity_save_context.
3045
static void velocity_restore_context(struct velocity_info *vptr, struct velocity_context *context)
3047
struct mac_regs __iomem *regs = vptr->mac_regs;
3049
u8 __iomem *ptr = (u8 __iomem *)regs;
3051
for (i = MAC_REG_PAR; i < MAC_REG_CR0_SET; i += 4)
3052
writel(*((u32 *) (context->mac_reg + i)), ptr + i);
3055
for (i = MAC_REG_CR1_SET; i < MAC_REG_CR0_CLR; i++) {
3057
writeb(~(*((u8 *) (context->mac_reg + i))), ptr + i + 4);
3059
writeb(*((u8 *) (context->mac_reg + i)), ptr + i);
3062
for (i = MAC_REG_MAR; i < MAC_REG_IMR; i += 4)
3063
writel(*((u32 *) (context->mac_reg + i)), ptr + i);
3065
for (i = MAC_REG_RDBASE_LO; i < MAC_REG_FIFO_TEST0; i += 4)
3066
writel(*((u32 *) (context->mac_reg + i)), ptr + i);
3068
for (i = MAC_REG_TDCSR_SET; i <= MAC_REG_RDCSR_SET; i++)
3069
writeb(*((u8 *) (context->mac_reg + i)), ptr + i);
3072
static int velocity_resume(struct pci_dev *pdev)
3074
struct net_device *dev = pci_get_drvdata(pdev);
3075
struct velocity_info *vptr = netdev_priv(dev);
3076
unsigned long flags;
3079
if (!netif_running(vptr->dev))
3082
pci_set_power_state(pdev, PCI_D0);
3083
pci_enable_wake(pdev, 0, 0);
3084
pci_restore_state(pdev);
3086
mac_wol_reset(vptr->mac_regs);
3088
spin_lock_irqsave(&vptr->lock, flags);
3089
velocity_restore_context(vptr, &vptr->context);
3090
velocity_init_registers(vptr, VELOCITY_INIT_WOL);
3091
mac_disable_int(vptr->mac_regs);
3093
velocity_tx_srv(vptr);
3095
for (i = 0; i < vptr->tx.numq; i++) {
3096
if (vptr->tx.used[i])
3097
mac_tx_queue_wake(vptr->mac_regs, i);
3100
mac_enable_int(vptr->mac_regs);
3101
spin_unlock_irqrestore(&vptr->lock, flags);
3102
netif_device_attach(vptr->dev);
3109
* Definition for our device driver. The PCI layer interface
3110
* uses this to handle all our card discover and plugging
3112
static struct pci_driver velocity_driver = {
3113
.name = VELOCITY_NAME,
3114
.id_table = velocity_id_table,
3115
.probe = velocity_found1,
3116
.remove = __devexit_p(velocity_remove1),
3118
.suspend = velocity_suspend,
3119
.resume = velocity_resume,
3125
* velocity_ethtool_up - pre hook for ethtool
3126
* @dev: network device
3128
* Called before an ethtool operation. We need to make sure the
3129
* chip is out of D3 state before we poke at it.
3131
static int velocity_ethtool_up(struct net_device *dev)
3133
struct velocity_info *vptr = netdev_priv(dev);
3134
if (!netif_running(dev))
3135
pci_set_power_state(vptr->pdev, PCI_D0);
3140
* velocity_ethtool_down - post hook for ethtool
3141
* @dev: network device
3143
* Called after an ethtool operation. Restore the chip back to D3
3144
* state if it isn't running.
3146
static void velocity_ethtool_down(struct net_device *dev)
3148
struct velocity_info *vptr = netdev_priv(dev);
3149
if (!netif_running(dev))
3150
pci_set_power_state(vptr->pdev, PCI_D3hot);
3153
static int velocity_get_settings(struct net_device *dev,
3154
struct ethtool_cmd *cmd)
3156
struct velocity_info *vptr = netdev_priv(dev);
3157
struct mac_regs __iomem *regs = vptr->mac_regs;
3159
status = check_connection_type(vptr->mac_regs);
3161
cmd->supported = SUPPORTED_TP |
3163
SUPPORTED_10baseT_Half |
3164
SUPPORTED_10baseT_Full |
3165
SUPPORTED_100baseT_Half |
3166
SUPPORTED_100baseT_Full |
3167
SUPPORTED_1000baseT_Half |
3168
SUPPORTED_1000baseT_Full;
3170
cmd->advertising = ADVERTISED_TP | ADVERTISED_Autoneg;
3171
if (vptr->options.spd_dpx == SPD_DPX_AUTO) {
3173
ADVERTISED_10baseT_Half |
3174
ADVERTISED_10baseT_Full |
3175
ADVERTISED_100baseT_Half |
3176
ADVERTISED_100baseT_Full |
3177
ADVERTISED_1000baseT_Half |
3178
ADVERTISED_1000baseT_Full;
3180
switch (vptr->options.spd_dpx) {
3181
case SPD_DPX_1000_FULL:
3182
cmd->advertising |= ADVERTISED_1000baseT_Full;
3184
case SPD_DPX_100_HALF:
3185
cmd->advertising |= ADVERTISED_100baseT_Half;
3187
case SPD_DPX_100_FULL:
3188
cmd->advertising |= ADVERTISED_100baseT_Full;
3190
case SPD_DPX_10_HALF:
3191
cmd->advertising |= ADVERTISED_10baseT_Half;
3193
case SPD_DPX_10_FULL:
3194
cmd->advertising |= ADVERTISED_10baseT_Full;
3201
if (status & VELOCITY_SPEED_1000)
3202
ethtool_cmd_speed_set(cmd, SPEED_1000);
3203
else if (status & VELOCITY_SPEED_100)
3204
ethtool_cmd_speed_set(cmd, SPEED_100);
3206
ethtool_cmd_speed_set(cmd, SPEED_10);
3208
cmd->autoneg = (status & VELOCITY_AUTONEG_ENABLE) ? AUTONEG_ENABLE : AUTONEG_DISABLE;
3209
cmd->port = PORT_TP;
3210
cmd->transceiver = XCVR_INTERNAL;
3211
cmd->phy_address = readb(®s->MIIADR) & 0x1F;
3213
if (status & VELOCITY_DUPLEX_FULL)
3214
cmd->duplex = DUPLEX_FULL;
3216
cmd->duplex = DUPLEX_HALF;
3221
static int velocity_set_settings(struct net_device *dev,
3222
struct ethtool_cmd *cmd)
3224
struct velocity_info *vptr = netdev_priv(dev);
3225
u32 speed = ethtool_cmd_speed(cmd);
3230
curr_status = check_connection_type(vptr->mac_regs);
3231
curr_status &= (~VELOCITY_LINK_FAIL);
3233
new_status |= ((cmd->autoneg) ? VELOCITY_AUTONEG_ENABLE : 0);
3234
new_status |= ((speed == SPEED_1000) ? VELOCITY_SPEED_1000 : 0);
3235
new_status |= ((speed == SPEED_100) ? VELOCITY_SPEED_100 : 0);
3236
new_status |= ((speed == SPEED_10) ? VELOCITY_SPEED_10 : 0);
3237
new_status |= ((cmd->duplex == DUPLEX_FULL) ? VELOCITY_DUPLEX_FULL : 0);
3239
if ((new_status & VELOCITY_AUTONEG_ENABLE) &&
3240
(new_status != (curr_status | VELOCITY_AUTONEG_ENABLE))) {
3243
enum speed_opt spd_dpx;
3245
if (new_status & VELOCITY_AUTONEG_ENABLE)
3246
spd_dpx = SPD_DPX_AUTO;
3247
else if ((new_status & VELOCITY_SPEED_1000) &&
3248
(new_status & VELOCITY_DUPLEX_FULL)) {
3249
spd_dpx = SPD_DPX_1000_FULL;
3250
} else if (new_status & VELOCITY_SPEED_100)
3251
spd_dpx = (new_status & VELOCITY_DUPLEX_FULL) ?
3252
SPD_DPX_100_FULL : SPD_DPX_100_HALF;
3253
else if (new_status & VELOCITY_SPEED_10)
3254
spd_dpx = (new_status & VELOCITY_DUPLEX_FULL) ?
3255
SPD_DPX_10_FULL : SPD_DPX_10_HALF;
3259
vptr->options.spd_dpx = spd_dpx;
3261
velocity_set_media_mode(vptr, new_status);
3267
static void velocity_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
3269
struct velocity_info *vptr = netdev_priv(dev);
3270
strcpy(info->driver, VELOCITY_NAME);
3271
strcpy(info->version, VELOCITY_VERSION);
3272
strcpy(info->bus_info, pci_name(vptr->pdev));
3275
static void velocity_ethtool_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
3277
struct velocity_info *vptr = netdev_priv(dev);
3278
wol->supported = WAKE_PHY | WAKE_MAGIC | WAKE_UCAST | WAKE_ARP;
3279
wol->wolopts |= WAKE_MAGIC;
3281
if (vptr->wol_opts & VELOCITY_WOL_PHY)
3282
wol.wolopts|=WAKE_PHY;
3284
if (vptr->wol_opts & VELOCITY_WOL_UCAST)
3285
wol->wolopts |= WAKE_UCAST;
3286
if (vptr->wol_opts & VELOCITY_WOL_ARP)
3287
wol->wolopts |= WAKE_ARP;
3288
memcpy(&wol->sopass, vptr->wol_passwd, 6);
3291
static int velocity_ethtool_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
3293
struct velocity_info *vptr = netdev_priv(dev);
3295
if (!(wol->wolopts & (WAKE_PHY | WAKE_MAGIC | WAKE_UCAST | WAKE_ARP)))
3297
vptr->wol_opts = VELOCITY_WOL_MAGIC;
3300
if (wol.wolopts & WAKE_PHY) {
3301
vptr->wol_opts|=VELOCITY_WOL_PHY;
3302
vptr->flags |=VELOCITY_FLAGS_WOL_ENABLED;
3306
if (wol->wolopts & WAKE_MAGIC) {
3307
vptr->wol_opts |= VELOCITY_WOL_MAGIC;
3308
vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
3310
if (wol->wolopts & WAKE_UCAST) {
3311
vptr->wol_opts |= VELOCITY_WOL_UCAST;
3312
vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
3314
if (wol->wolopts & WAKE_ARP) {
3315
vptr->wol_opts |= VELOCITY_WOL_ARP;
3316
vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
3318
memcpy(vptr->wol_passwd, wol->sopass, 6);
3322
static u32 velocity_get_msglevel(struct net_device *dev)
3327
static void velocity_set_msglevel(struct net_device *dev, u32 value)
3332
static int get_pending_timer_val(int val)
3334
int mult_bits = val >> 6;
3350
return (val & 0x3f) * mult;
3353
static void set_pending_timer_val(int *val, u32 us)
3359
mult = 1; /* mult with 4 */
3362
if (us >= 0x3f * 4) {
3363
mult = 2; /* mult with 16 */
3366
if (us >= 0x3f * 16) {
3367
mult = 3; /* mult with 64 */
3371
*val = (mult << 6) | ((us >> shift) & 0x3f);
3375
static int velocity_get_coalesce(struct net_device *dev,
3376
struct ethtool_coalesce *ecmd)
3378
struct velocity_info *vptr = netdev_priv(dev);
3380
ecmd->tx_max_coalesced_frames = vptr->options.tx_intsup;
3381
ecmd->rx_max_coalesced_frames = vptr->options.rx_intsup;
3383
ecmd->rx_coalesce_usecs = get_pending_timer_val(vptr->options.rxqueue_timer);
3384
ecmd->tx_coalesce_usecs = get_pending_timer_val(vptr->options.txqueue_timer);
3389
static int velocity_set_coalesce(struct net_device *dev,
3390
struct ethtool_coalesce *ecmd)
3392
struct velocity_info *vptr = netdev_priv(dev);
3393
int max_us = 0x3f * 64;
3394
unsigned long flags;
3397
if (ecmd->tx_coalesce_usecs > max_us)
3399
if (ecmd->rx_coalesce_usecs > max_us)
3402
if (ecmd->tx_max_coalesced_frames > 0xff)
3404
if (ecmd->rx_max_coalesced_frames > 0xff)
3407
vptr->options.rx_intsup = ecmd->rx_max_coalesced_frames;
3408
vptr->options.tx_intsup = ecmd->tx_max_coalesced_frames;
3410
set_pending_timer_val(&vptr->options.rxqueue_timer,
3411
ecmd->rx_coalesce_usecs);
3412
set_pending_timer_val(&vptr->options.txqueue_timer,
3413
ecmd->tx_coalesce_usecs);
3415
/* Setup the interrupt suppression and queue timers */
3416
spin_lock_irqsave(&vptr->lock, flags);
3417
mac_disable_int(vptr->mac_regs);
3418
setup_adaptive_interrupts(vptr);
3419
setup_queue_timers(vptr);
3421
mac_write_int_mask(vptr->int_mask, vptr->mac_regs);
3422
mac_clear_isr(vptr->mac_regs);
3423
mac_enable_int(vptr->mac_regs);
3424
spin_unlock_irqrestore(&vptr->lock, flags);
3429
static const char velocity_gstrings[][ETH_GSTRING_LEN] = {
3448
"tx_ether_collisions",
3452
"rx_mac_control_frames",
3453
"tx_mac_control_frames",
3454
"rx_frame_alignement_errors",
3460
"in_range_length_errors",
3464
static void velocity_get_strings(struct net_device *dev, u32 sset, u8 *data)
3468
memcpy(data, *velocity_gstrings, sizeof(velocity_gstrings));
3473
static int velocity_get_sset_count(struct net_device *dev, int sset)
3477
return ARRAY_SIZE(velocity_gstrings);
3483
static void velocity_get_ethtool_stats(struct net_device *dev,
3484
struct ethtool_stats *stats, u64 *data)
3486
if (netif_running(dev)) {
3487
struct velocity_info *vptr = netdev_priv(dev);
3488
u32 *p = vptr->mib_counter;
3491
spin_lock_irq(&vptr->lock);
3492
velocity_update_hw_mibs(vptr);
3493
spin_unlock_irq(&vptr->lock);
3495
for (i = 0; i < ARRAY_SIZE(velocity_gstrings); i++)
3500
static const struct ethtool_ops velocity_ethtool_ops = {
3501
.get_settings = velocity_get_settings,
3502
.set_settings = velocity_set_settings,
3503
.get_drvinfo = velocity_get_drvinfo,
3504
.get_wol = velocity_ethtool_get_wol,
3505
.set_wol = velocity_ethtool_set_wol,
3506
.get_msglevel = velocity_get_msglevel,
3507
.set_msglevel = velocity_set_msglevel,
3508
.get_link = velocity_get_link,
3509
.get_strings = velocity_get_strings,
3510
.get_sset_count = velocity_get_sset_count,
3511
.get_ethtool_stats = velocity_get_ethtool_stats,
3512
.get_coalesce = velocity_get_coalesce,
3513
.set_coalesce = velocity_set_coalesce,
3514
.begin = velocity_ethtool_up,
3515
.complete = velocity_ethtool_down
3518
#if defined(CONFIG_PM) && defined(CONFIG_INET)
3519
static int velocity_netdev_event(struct notifier_block *nb, unsigned long notification, void *ptr)
3521
struct in_ifaddr *ifa = ptr;
3522
struct net_device *dev = ifa->ifa_dev->dev;
3524
if (dev_net(dev) == &init_net &&
3525
dev->netdev_ops == &velocity_netdev_ops)
3526
velocity_get_ip(netdev_priv(dev));
3531
static struct notifier_block velocity_inetaddr_notifier = {
3532
.notifier_call = velocity_netdev_event,
3535
static void velocity_register_notifier(void)
3537
register_inetaddr_notifier(&velocity_inetaddr_notifier);
3540
static void velocity_unregister_notifier(void)
3542
unregister_inetaddr_notifier(&velocity_inetaddr_notifier);
3547
#define velocity_register_notifier() do {} while (0)
3548
#define velocity_unregister_notifier() do {} while (0)
3550
#endif /* defined(CONFIG_PM) && defined(CONFIG_INET) */
3553
* velocity_init_module - load time function
3555
* Called when the velocity module is loaded. The PCI driver
3556
* is registered with the PCI layer, and in turn will call
3557
* the probe functions for each velocity adapter installed
3560
static int __init velocity_init_module(void)
3564
velocity_register_notifier();
3565
ret = pci_register_driver(&velocity_driver);
3567
velocity_unregister_notifier();
3572
* velocity_cleanup - module unload
3574
* When the velocity hardware is unloaded this function is called.
3575
* It will clean up the notifiers and the unregister the PCI
3576
* driver interface for this hardware. This in turn cleans up
3577
* all discovered interfaces before returning from the function
3579
static void __exit velocity_cleanup_module(void)
3581
velocity_unregister_notifier();
3582
pci_unregister_driver(&velocity_driver);
3585
module_init(velocity_init_module);
3586
module_exit(velocity_cleanup_module);
added
removed
drivers/net/ethernet/via/via-velocity.c
