Version:  2.0.40 2.2.26 2.4.37 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17 3.18 3.19 4.0 4.1 4.2 4.3 4.4

Linux/drivers/net/ethernet/via/via-velocity.c

  1 /*
  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.
  5  *
  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.
  9  *
 10  * TODO
 11  *      rx_copybreak/alignment
 12  *      More testing
 13  *
 14  * The changes are (c) Copyright 2004, Red Hat Inc. <alan@lxorguk.ukuu.org.uk>
 15  * Additional fixes and clean up: Francois Romieu
 16  *
 17  * This source has not been verified for use in safety critical systems.
 18  *
 19  * Please direct queries about the revamped driver to the linux-kernel
 20  * list not VIA.
 21  *
 22  * Original code:
 23  *
 24  * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
 25  * All rights reserved.
 26  *
 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
 30  * any later version.
 31  *
 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
 35  * for more details.
 36  *
 37  * Author: Chuang Liang-Shing, AJ Jiang
 38  *
 39  * Date: Jan 24, 2003
 40  *
 41  * MODULE_LICENSE("GPL");
 42  *
 43  */
 44 
 45 #include <linux/module.h>
 46 #include <linux/types.h>
 47 #include <linux/bitops.h>
 48 #include <linux/init.h>
 49 #include <linux/dma-mapping.h>
 50 #include <linux/mm.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>
 64 #include <linux/io.h>
 65 #include <linux/if.h>
 66 #include <linux/uaccess.h>
 67 #include <linux/proc_fs.h>
 68 #include <linux/of_address.h>
 69 #include <linux/of_device.h>
 70 #include <linux/of_irq.h>
 71 #include <linux/inetdevice.h>
 72 #include <linux/platform_device.h>
 73 #include <linux/reboot.h>
 74 #include <linux/ethtool.h>
 75 #include <linux/mii.h>
 76 #include <linux/in.h>
 77 #include <linux/if_arp.h>
 78 #include <linux/if_vlan.h>
 79 #include <linux/ip.h>
 80 #include <linux/tcp.h>
 81 #include <linux/udp.h>
 82 #include <linux/crc-ccitt.h>
 83 #include <linux/crc32.h>
 84 
 85 #include "via-velocity.h"
 86 
 87 enum velocity_bus_type {
 88         BUS_PCI,
 89         BUS_PLATFORM,
 90 };
 91 
 92 static int velocity_nics;
 93 static int msglevel = MSG_LEVEL_INFO;
 94 
 95 static void velocity_set_power_state(struct velocity_info *vptr, char state)
 96 {
 97         void *addr = vptr->mac_regs;
 98 
 99         if (vptr->pdev)
100                 pci_set_power_state(vptr->pdev, state);
101         else
102                 writeb(state, addr + 0x154);
103 }
104 
105 /**
106  *      mac_get_cam_mask        -       Read a CAM mask
107  *      @regs: register block for this velocity
108  *      @mask: buffer to store mask
109  *
110  *      Fetch the mask bits of the selected CAM and store them into the
111  *      provided mask buffer.
112  */
113 static void mac_get_cam_mask(struct mac_regs __iomem *regs, u8 *mask)
114 {
115         int i;
116 
117         /* Select CAM mask */
118         BYTE_REG_BITS_SET(CAMCR_PS_CAM_MASK, CAMCR_PS1 | CAMCR_PS0, &regs->CAMCR);
119 
120         writeb(0, &regs->CAMADDR);
121 
122         /* read mask */
123         for (i = 0; i < 8; i++)
124                 *mask++ = readb(&(regs->MARCAM[i]));
125 
126         /* disable CAMEN */
127         writeb(0, &regs->CAMADDR);
128 
129         /* Select mar */
130         BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, &regs->CAMCR);
131 }
132 
133 /**
134  *      mac_set_cam_mask        -       Set a CAM mask
135  *      @regs: register block for this velocity
136  *      @mask: CAM mask to load
137  *
138  *      Store a new mask into a CAM
139  */
140 static void mac_set_cam_mask(struct mac_regs __iomem *regs, u8 *mask)
141 {
142         int i;
143         /* Select CAM mask */
144         BYTE_REG_BITS_SET(CAMCR_PS_CAM_MASK, CAMCR_PS1 | CAMCR_PS0, &regs->CAMCR);
145 
146         writeb(CAMADDR_CAMEN, &regs->CAMADDR);
147 
148         for (i = 0; i < 8; i++)
149                 writeb(*mask++, &(regs->MARCAM[i]));
150 
151         /* disable CAMEN */
152         writeb(0, &regs->CAMADDR);
153 
154         /* Select mar */
155         BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, &regs->CAMCR);
156 }
157 
158 static void mac_set_vlan_cam_mask(struct mac_regs __iomem *regs, u8 *mask)
159 {
160         int i;
161         /* Select CAM mask */
162         BYTE_REG_BITS_SET(CAMCR_PS_CAM_MASK, CAMCR_PS1 | CAMCR_PS0, &regs->CAMCR);
163 
164         writeb(CAMADDR_CAMEN | CAMADDR_VCAMSL, &regs->CAMADDR);
165 
166         for (i = 0; i < 8; i++)
167                 writeb(*mask++, &(regs->MARCAM[i]));
168 
169         /* disable CAMEN */
170         writeb(0, &regs->CAMADDR);
171 
172         /* Select mar */
173         BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, &regs->CAMCR);
174 }
175 
176 /**
177  *      mac_set_cam     -       set CAM data
178  *      @regs: register block of this velocity
179  *      @idx: Cam index
180  *      @addr: 2 or 6 bytes of CAM data
181  *
182  *      Load an address or vlan tag into a CAM
183  */
184 static void mac_set_cam(struct mac_regs __iomem *regs, int idx, const u8 *addr)
185 {
186         int i;
187 
188         /* Select CAM mask */
189         BYTE_REG_BITS_SET(CAMCR_PS_CAM_DATA, CAMCR_PS1 | CAMCR_PS0, &regs->CAMCR);
190 
191         idx &= (64 - 1);
192 
193         writeb(CAMADDR_CAMEN | idx, &regs->CAMADDR);
194 
195         for (i = 0; i < 6; i++)
196                 writeb(*addr++, &(regs->MARCAM[i]));
197 
198         BYTE_REG_BITS_ON(CAMCR_CAMWR, &regs->CAMCR);
199 
200         udelay(10);
201 
202         writeb(0, &regs->CAMADDR);
203 
204         /* Select mar */
205         BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, &regs->CAMCR);
206 }
207 
208 static void mac_set_vlan_cam(struct mac_regs __iomem *regs, int idx,
209                              const u8 *addr)
210 {
211 
212         /* Select CAM mask */
213         BYTE_REG_BITS_SET(CAMCR_PS_CAM_DATA, CAMCR_PS1 | CAMCR_PS0, &regs->CAMCR);
214 
215         idx &= (64 - 1);
216 
217         writeb(CAMADDR_CAMEN | CAMADDR_VCAMSL | idx, &regs->CAMADDR);
218         writew(*((u16 *) addr), &regs->MARCAM[0]);
219 
220         BYTE_REG_BITS_ON(CAMCR_CAMWR, &regs->CAMCR);
221 
222         udelay(10);
223 
224         writeb(0, &regs->CAMADDR);
225 
226         /* Select mar */
227         BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, &regs->CAMCR);
228 }
229 
230 
231 /**
232  *      mac_wol_reset   -       reset WOL after exiting low power
233  *      @regs: register block of this velocity
234  *
235  *      Called after we drop out of wake on lan mode in order to
236  *      reset the Wake on lan features. This function doesn't restore
237  *      the rest of the logic from the result of sleep/wakeup
238  */
239 static void mac_wol_reset(struct mac_regs __iomem *regs)
240 {
241 
242         /* Turn off SWPTAG right after leaving power mode */
243         BYTE_REG_BITS_OFF(STICKHW_SWPTAG, &regs->STICKHW);
244         /* clear sticky bits */
245         BYTE_REG_BITS_OFF((STICKHW_DS1 | STICKHW_DS0), &regs->STICKHW);
246 
247         BYTE_REG_BITS_OFF(CHIPGCR_FCGMII, &regs->CHIPGCR);
248         BYTE_REG_BITS_OFF(CHIPGCR_FCMODE, &regs->CHIPGCR);
249         /* disable force PME-enable */
250         writeb(WOLCFG_PMEOVR, &regs->WOLCFGClr);
251         /* disable power-event config bit */
252         writew(0xFFFF, &regs->WOLCRClr);
253         /* clear power status */
254         writew(0xFFFF, &regs->WOLSRClr);
255 }
256 
257 static const struct ethtool_ops velocity_ethtool_ops;
258 
259 /*
260     Define module options
261 */
262 
263 MODULE_AUTHOR("VIA Networking Technologies, Inc.");
264 MODULE_LICENSE("GPL");
265 MODULE_DESCRIPTION("VIA Networking Velocity Family Gigabit Ethernet Adapter Driver");
266 
267 #define VELOCITY_PARAM(N, D) \
268         static int N[MAX_UNITS] = OPTION_DEFAULT;\
269         module_param_array(N, int, NULL, 0); \
270         MODULE_PARM_DESC(N, D);
271 
272 #define RX_DESC_MIN     64
273 #define RX_DESC_MAX     255
274 #define RX_DESC_DEF     64
275 VELOCITY_PARAM(RxDescriptors, "Number of receive descriptors");
276 
277 #define TX_DESC_MIN     16
278 #define TX_DESC_MAX     256
279 #define TX_DESC_DEF     64
280 VELOCITY_PARAM(TxDescriptors, "Number of transmit descriptors");
281 
282 #define RX_THRESH_MIN   0
283 #define RX_THRESH_MAX   3
284 #define RX_THRESH_DEF   0
285 /* rx_thresh[] is used for controlling the receive fifo threshold.
286    0: indicate the rxfifo threshold is 128 bytes.
287    1: indicate the rxfifo threshold is 512 bytes.
288    2: indicate the rxfifo threshold is 1024 bytes.
289    3: indicate the rxfifo threshold is store & forward.
290 */
291 VELOCITY_PARAM(rx_thresh, "Receive fifo threshold");
292 
293 #define DMA_LENGTH_MIN  0
294 #define DMA_LENGTH_MAX  7
295 #define DMA_LENGTH_DEF  6
296 
297 /* DMA_length[] is used for controlling the DMA length
298    0: 8 DWORDs
299    1: 16 DWORDs
300    2: 32 DWORDs
301    3: 64 DWORDs
302    4: 128 DWORDs
303    5: 256 DWORDs
304    6: SF(flush till emply)
305    7: SF(flush till emply)
306 */
307 VELOCITY_PARAM(DMA_length, "DMA length");
308 
309 #define IP_ALIG_DEF     0
310 /* IP_byte_align[] is used for IP header DWORD byte aligned
311    0: indicate the IP header won't be DWORD byte aligned.(Default) .
312    1: indicate the IP header will be DWORD byte aligned.
313       In some environment, the IP header should be DWORD byte aligned,
314       or the packet will be droped when we receive it. (eg: IPVS)
315 */
316 VELOCITY_PARAM(IP_byte_align, "Enable IP header dword aligned");
317 
318 #define FLOW_CNTL_DEF   1
319 #define FLOW_CNTL_MIN   1
320 #define FLOW_CNTL_MAX   5
321 
322 /* flow_control[] is used for setting the flow control ability of NIC.
323    1: hardware deafult - AUTO (default). Use Hardware default value in ANAR.
324    2: enable TX flow control.
325    3: enable RX flow control.
326    4: enable RX/TX flow control.
327    5: disable
328 */
329 VELOCITY_PARAM(flow_control, "Enable flow control ability");
330 
331 #define MED_LNK_DEF 0
332 #define MED_LNK_MIN 0
333 #define MED_LNK_MAX 5
334 /* speed_duplex[] is used for setting the speed and duplex mode of NIC.
335    0: indicate autonegotiation for both speed and duplex mode
336    1: indicate 100Mbps half duplex mode
337    2: indicate 100Mbps full duplex mode
338    3: indicate 10Mbps half duplex mode
339    4: indicate 10Mbps full duplex mode
340    5: indicate 1000Mbps full duplex mode
341 
342    Note:
343    if EEPROM have been set to the force mode, this option is ignored
344    by driver.
345 */
346 VELOCITY_PARAM(speed_duplex, "Setting the speed and duplex mode");
347 
348 #define WOL_OPT_DEF     0
349 #define WOL_OPT_MIN     0
350 #define WOL_OPT_MAX     7
351 /* wol_opts[] is used for controlling wake on lan behavior.
352    0: Wake up if recevied a magic packet. (Default)
353    1: Wake up if link status is on/off.
354    2: Wake up if recevied an arp packet.
355    4: Wake up if recevied any unicast packet.
356    Those value can be sumed up to support more than one option.
357 */
358 VELOCITY_PARAM(wol_opts, "Wake On Lan options");
359 
360 static int rx_copybreak = 200;
361 module_param(rx_copybreak, int, 0644);
362 MODULE_PARM_DESC(rx_copybreak, "Copy breakpoint for copy-only-tiny-frames");
363 
364 /*
365  *      Internal board variants. At the moment we have only one
366  */
367 static struct velocity_info_tbl chip_info_table[] = {
368         {CHIP_TYPE_VT6110, "VIA Networking Velocity Family Gigabit Ethernet Adapter", 1, 0x00FFFFFFUL},
369         { }
370 };
371 
372 /*
373  *      Describe the PCI device identifiers that we support in this
374  *      device driver. Used for hotplug autoloading.
375  */
376 
377 static const struct pci_device_id velocity_pci_id_table[] = {
378         { PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_612X) },
379         { }
380 };
381 
382 MODULE_DEVICE_TABLE(pci, velocity_pci_id_table);
383 
384 /**
385  *      Describe the OF device identifiers that we support in this
386  *      device driver. Used for devicetree nodes.
387  */
388 static const struct of_device_id velocity_of_ids[] = {
389         { .compatible = "via,velocity-vt6110", .data = &chip_info_table[0] },
390         { /* Sentinel */ },
391 };
392 MODULE_DEVICE_TABLE(of, velocity_of_ids);
393 
394 /**
395  *      get_chip_name   -       identifier to name
396  *      @id: chip identifier
397  *
398  *      Given a chip identifier return a suitable description. Returns
399  *      a pointer a static string valid while the driver is loaded.
400  */
401 static const char *get_chip_name(enum chip_type chip_id)
402 {
403         int i;
404         for (i = 0; chip_info_table[i].name != NULL; i++)
405                 if (chip_info_table[i].chip_id == chip_id)
406                         break;
407         return chip_info_table[i].name;
408 }
409 
410 /**
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
418  *      @dev: device name
419  *
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.
423  */
424 static void velocity_set_int_opt(int *opt, int val, int min, int max, int def,
425                                  char *name, const char *devname)
426 {
427         if (val == -1)
428                 *opt = def;
429         else if (val < min || val > max) {
430                 VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: the value of parameter %s is invalid, the valid range is (%d-%d)\n",
431                                         devname, name, min, max);
432                 *opt = def;
433         } else {
434                 VELOCITY_PRT(MSG_LEVEL_INFO, KERN_INFO "%s: set value of parameter %s to %d\n",
435                                         devname, name, val);
436                 *opt = val;
437         }
438 }
439 
440 /**
441  *      velocity_set_bool_opt   -       parser for boolean options
442  *      @opt: pointer to option value
443  *      @val: value the user requested (or -1 for default)
444  *      @def: default value (yes/no)
445  *      @flag: numeric value to set for true.
446  *      @name: property name
447  *      @dev: device name
448  *
449  *      Set a boolean property in the module options. This function does
450  *      all the verification and checking as well as reporting so that
451  *      we don't duplicate code for each option.
452  */
453 static void velocity_set_bool_opt(u32 *opt, int val, int def, u32 flag,
454                                   char *name, const char *devname)
455 {
456         (*opt) &= (~flag);
457         if (val == -1)
458                 *opt |= (def ? flag : 0);
459         else if (val < 0 || val > 1) {
460                 printk(KERN_NOTICE "%s: the value of parameter %s is invalid, the valid range is (0-1)\n",
461                         devname, name);
462                 *opt |= (def ? flag : 0);
463         } else {
464                 printk(KERN_INFO "%s: set parameter %s to %s\n",
465                         devname, name, val ? "TRUE" : "FALSE");
466                 *opt |= (val ? flag : 0);
467         }
468 }
469 
470 /**
471  *      velocity_get_options    -       set options on device
472  *      @opts: option structure for the device
473  *      @index: index of option to use in module options array
474  *      @devname: device name
475  *
476  *      Turn the module and command options into a single structure
477  *      for the current device
478  */
479 static void velocity_get_options(struct velocity_opt *opts, int index,
480                                  const char *devname)
481 {
482 
483         velocity_set_int_opt(&opts->rx_thresh, rx_thresh[index], RX_THRESH_MIN, RX_THRESH_MAX, RX_THRESH_DEF, "rx_thresh", devname);
484         velocity_set_int_opt(&opts->DMA_length, DMA_length[index], DMA_LENGTH_MIN, DMA_LENGTH_MAX, DMA_LENGTH_DEF, "DMA_length", devname);
485         velocity_set_int_opt(&opts->numrx, RxDescriptors[index], RX_DESC_MIN, RX_DESC_MAX, RX_DESC_DEF, "RxDescriptors", devname);
486         velocity_set_int_opt(&opts->numtx, TxDescriptors[index], TX_DESC_MIN, TX_DESC_MAX, TX_DESC_DEF, "TxDescriptors", devname);
487 
488         velocity_set_int_opt(&opts->flow_cntl, flow_control[index], FLOW_CNTL_MIN, FLOW_CNTL_MAX, FLOW_CNTL_DEF, "flow_control", devname);
489         velocity_set_bool_opt(&opts->flags, IP_byte_align[index], IP_ALIG_DEF, VELOCITY_FLAGS_IP_ALIGN, "IP_byte_align", devname);
490         velocity_set_int_opt((int *) &opts->spd_dpx, speed_duplex[index], MED_LNK_MIN, MED_LNK_MAX, MED_LNK_DEF, "Media link mode", devname);
491         velocity_set_int_opt(&opts->wol_opts, wol_opts[index], WOL_OPT_MIN, WOL_OPT_MAX, WOL_OPT_DEF, "Wake On Lan options", devname);
492         opts->numrx = (opts->numrx & ~3);
493 }
494 
495 /**
496  *      velocity_init_cam_filter        -       initialise CAM
497  *      @vptr: velocity to program
498  *
499  *      Initialize the content addressable memory used for filters. Load
500  *      appropriately according to the presence of VLAN
501  */
502 static void velocity_init_cam_filter(struct velocity_info *vptr)
503 {
504         struct mac_regs __iomem *regs = vptr->mac_regs;
505         unsigned int vid, i = 0;
506 
507         /* Turn on MCFG_PQEN, turn off MCFG_RTGOPT */
508         WORD_REG_BITS_SET(MCFG_PQEN, MCFG_RTGOPT, &regs->MCFG);
509         WORD_REG_BITS_ON(MCFG_VIDFR, &regs->MCFG);
510 
511         /* Disable all CAMs */
512         memset(vptr->vCAMmask, 0, sizeof(u8) * 8);
513         memset(vptr->mCAMmask, 0, sizeof(u8) * 8);
514         mac_set_vlan_cam_mask(regs, vptr->vCAMmask);
515         mac_set_cam_mask(regs, vptr->mCAMmask);
516 
517         /* Enable VCAMs */
518         for_each_set_bit(vid, vptr->active_vlans, VLAN_N_VID) {
519                 mac_set_vlan_cam(regs, i, (u8 *) &vid);
520                 vptr->vCAMmask[i / 8] |= 0x1 << (i % 8);
521                 if (++i >= VCAM_SIZE)
522                         break;
523         }
524         mac_set_vlan_cam_mask(regs, vptr->vCAMmask);
525 }
526 
527 static int velocity_vlan_rx_add_vid(struct net_device *dev,
528                                     __be16 proto, u16 vid)
529 {
530         struct velocity_info *vptr = netdev_priv(dev);
531 
532         spin_lock_irq(&vptr->lock);
533         set_bit(vid, vptr->active_vlans);
534         velocity_init_cam_filter(vptr);
535         spin_unlock_irq(&vptr->lock);
536         return 0;
537 }
538 
539 static int velocity_vlan_rx_kill_vid(struct net_device *dev,
540                                      __be16 proto, u16 vid)
541 {
542         struct velocity_info *vptr = netdev_priv(dev);
543 
544         spin_lock_irq(&vptr->lock);
545         clear_bit(vid, vptr->active_vlans);
546         velocity_init_cam_filter(vptr);
547         spin_unlock_irq(&vptr->lock);
548         return 0;
549 }
550 
551 static void velocity_init_rx_ring_indexes(struct velocity_info *vptr)
552 {
553         vptr->rx.dirty = vptr->rx.filled = vptr->rx.curr = 0;
554 }
555 
556 /**
557  *      velocity_rx_reset       -       handle a receive reset
558  *      @vptr: velocity we are resetting
559  *
560  *      Reset the ownership and status for the receive ring side.
561  *      Hand all the receive queue to the NIC.
562  */
563 static void velocity_rx_reset(struct velocity_info *vptr)
564 {
565 
566         struct mac_regs __iomem *regs = vptr->mac_regs;
567         int i;
568 
569         velocity_init_rx_ring_indexes(vptr);
570 
571         /*
572          *      Init state, all RD entries belong to the NIC
573          */
574         for (i = 0; i < vptr->options.numrx; ++i)
575                 vptr->rx.ring[i].rdesc0.len |= OWNED_BY_NIC;
576 
577         writew(vptr->options.numrx, &regs->RBRDU);
578         writel(vptr->rx.pool_dma, &regs->RDBaseLo);
579         writew(0, &regs->RDIdx);
580         writew(vptr->options.numrx - 1, &regs->RDCSize);
581 }
582 
583 /**
584  *      velocity_get_opt_media_mode     -       get media selection
585  *      @vptr: velocity adapter
586  *
587  *      Get the media mode stored in EEPROM or module options and load
588  *      mii_status accordingly. The requested link state information
589  *      is also returned.
590  */
591 static u32 velocity_get_opt_media_mode(struct velocity_info *vptr)
592 {
593         u32 status = 0;
594 
595         switch (vptr->options.spd_dpx) {
596         case SPD_DPX_AUTO:
597                 status = VELOCITY_AUTONEG_ENABLE;
598                 break;
599         case SPD_DPX_100_FULL:
600                 status = VELOCITY_SPEED_100 | VELOCITY_DUPLEX_FULL;
601                 break;
602         case SPD_DPX_10_FULL:
603                 status = VELOCITY_SPEED_10 | VELOCITY_DUPLEX_FULL;
604                 break;
605         case SPD_DPX_100_HALF:
606                 status = VELOCITY_SPEED_100;
607                 break;
608         case SPD_DPX_10_HALF:
609                 status = VELOCITY_SPEED_10;
610                 break;
611         case SPD_DPX_1000_FULL:
612                 status = VELOCITY_SPEED_1000 | VELOCITY_DUPLEX_FULL;
613                 break;
614         }
615         vptr->mii_status = status;
616         return status;
617 }
618 
619 /**
620  *      safe_disable_mii_autopoll       -       autopoll off
621  *      @regs: velocity registers
622  *
623  *      Turn off the autopoll and wait for it to disable on the chip
624  */
625 static void safe_disable_mii_autopoll(struct mac_regs __iomem *regs)
626 {
627         u16 ww;
628 
629         /*  turn off MAUTO */
630         writeb(0, &regs->MIICR);
631         for (ww = 0; ww < W_MAX_TIMEOUT; ww++) {
632                 udelay(1);
633                 if (BYTE_REG_BITS_IS_ON(MIISR_MIDLE, &regs->MIISR))
634                         break;
635         }
636 }
637 
638 /**
639  *      enable_mii_autopoll     -       turn on autopolling
640  *      @regs: velocity registers
641  *
642  *      Enable the MII link status autopoll feature on the Velocity
643  *      hardware. Wait for it to enable.
644  */
645 static void enable_mii_autopoll(struct mac_regs __iomem *regs)
646 {
647         int ii;
648 
649         writeb(0, &(regs->MIICR));
650         writeb(MIIADR_SWMPL, &regs->MIIADR);
651 
652         for (ii = 0; ii < W_MAX_TIMEOUT; ii++) {
653                 udelay(1);
654                 if (BYTE_REG_BITS_IS_ON(MIISR_MIDLE, &regs->MIISR))
655                         break;
656         }
657 
658         writeb(MIICR_MAUTO, &regs->MIICR);
659 
660         for (ii = 0; ii < W_MAX_TIMEOUT; ii++) {
661                 udelay(1);
662                 if (!BYTE_REG_BITS_IS_ON(MIISR_MIDLE, &regs->MIISR))
663                         break;
664         }
665 
666 }
667 
668 /**
669  *      velocity_mii_read       -       read MII data
670  *      @regs: velocity registers
671  *      @index: MII register index
672  *      @data: buffer for received data
673  *
674  *      Perform a single read of an MII 16bit register. Returns zero
675  *      on success or -ETIMEDOUT if the PHY did not respond.
676  */
677 static int velocity_mii_read(struct mac_regs __iomem *regs, u8 index, u16 *data)
678 {
679         u16 ww;
680 
681         /*
682          *      Disable MIICR_MAUTO, so that mii addr can be set normally
683          */
684         safe_disable_mii_autopoll(regs);
685 
686         writeb(index, &regs->MIIADR);
687 
688         BYTE_REG_BITS_ON(MIICR_RCMD, &regs->MIICR);
689 
690         for (ww = 0; ww < W_MAX_TIMEOUT; ww++) {
691                 if (!(readb(&regs->MIICR) & MIICR_RCMD))
692                         break;
693         }
694 
695         *data = readw(&regs->MIIDATA);
696 
697         enable_mii_autopoll(regs);
698         if (ww == W_MAX_TIMEOUT)
699                 return -ETIMEDOUT;
700         return 0;
701 }
702 
703 /**
704  *      mii_check_media_mode    -       check media state
705  *      @regs: velocity registers
706  *
707  *      Check the current MII status and determine the link status
708  *      accordingly
709  */
710 static u32 mii_check_media_mode(struct mac_regs __iomem *regs)
711 {
712         u32 status = 0;
713         u16 ANAR;
714 
715         if (!MII_REG_BITS_IS_ON(BMSR_LSTATUS, MII_BMSR, regs))
716                 status |= VELOCITY_LINK_FAIL;
717 
718         if (MII_REG_BITS_IS_ON(ADVERTISE_1000FULL, MII_CTRL1000, regs))
719                 status |= VELOCITY_SPEED_1000 | VELOCITY_DUPLEX_FULL;
720         else if (MII_REG_BITS_IS_ON(ADVERTISE_1000HALF, MII_CTRL1000, regs))
721                 status |= (VELOCITY_SPEED_1000);
722         else {
723                 velocity_mii_read(regs, MII_ADVERTISE, &ANAR);
724                 if (ANAR & ADVERTISE_100FULL)
725                         status |= (VELOCITY_SPEED_100 | VELOCITY_DUPLEX_FULL);
726                 else if (ANAR & ADVERTISE_100HALF)
727                         status |= VELOCITY_SPEED_100;
728                 else if (ANAR & ADVERTISE_10FULL)
729                         status |= (VELOCITY_SPEED_10 | VELOCITY_DUPLEX_FULL);
730                 else
731                         status |= (VELOCITY_SPEED_10);
732         }
733 
734         if (MII_REG_BITS_IS_ON(BMCR_ANENABLE, MII_BMCR, regs)) {
735                 velocity_mii_read(regs, MII_ADVERTISE, &ANAR);
736                 if ((ANAR & (ADVERTISE_100FULL | ADVERTISE_100HALF | ADVERTISE_10FULL | ADVERTISE_10HALF))
737                     == (ADVERTISE_100FULL | ADVERTISE_100HALF | ADVERTISE_10FULL | ADVERTISE_10HALF)) {
738                         if (MII_REG_BITS_IS_ON(ADVERTISE_1000HALF | ADVERTISE_1000FULL, MII_CTRL1000, regs))
739                                 status |= VELOCITY_AUTONEG_ENABLE;
740                 }
741         }
742 
743         return status;
744 }
745 
746 /**
747  *      velocity_mii_write      -       write MII data
748  *      @regs: velocity registers
749  *      @index: MII register index
750  *      @data: 16bit data for the MII register
751  *
752  *      Perform a single write to an MII 16bit register. Returns zero
753  *      on success or -ETIMEDOUT if the PHY did not respond.
754  */
755 static int velocity_mii_write(struct mac_regs __iomem *regs, u8 mii_addr, u16 data)
756 {
757         u16 ww;
758 
759         /*
760          *      Disable MIICR_MAUTO, so that mii addr can be set normally
761          */
762         safe_disable_mii_autopoll(regs);
763 
764         /* MII reg offset */
765         writeb(mii_addr, &regs->MIIADR);
766         /* set MII data */
767         writew(data, &regs->MIIDATA);
768 
769         /* turn on MIICR_WCMD */
770         BYTE_REG_BITS_ON(MIICR_WCMD, &regs->MIICR);
771 
772         /* W_MAX_TIMEOUT is the timeout period */
773         for (ww = 0; ww < W_MAX_TIMEOUT; ww++) {
774                 udelay(5);
775                 if (!(readb(&regs->MIICR) & MIICR_WCMD))
776                         break;
777         }
778         enable_mii_autopoll(regs);
779 
780         if (ww == W_MAX_TIMEOUT)
781                 return -ETIMEDOUT;
782         return 0;
783 }
784 
785 /**
786  *      set_mii_flow_control    -       flow control setup
787  *      @vptr: velocity interface
788  *
789  *      Set up the flow control on this interface according to
790  *      the supplied user/eeprom options.
791  */
792 static void set_mii_flow_control(struct velocity_info *vptr)
793 {
794         /*Enable or Disable PAUSE in ANAR */
795         switch (vptr->options.flow_cntl) {
796         case FLOW_CNTL_TX:
797                 MII_REG_BITS_OFF(ADVERTISE_PAUSE_CAP, MII_ADVERTISE, vptr->mac_regs);
798                 MII_REG_BITS_ON(ADVERTISE_PAUSE_ASYM, MII_ADVERTISE, vptr->mac_regs);
799                 break;
800 
801         case FLOW_CNTL_RX:
802                 MII_REG_BITS_ON(ADVERTISE_PAUSE_CAP, MII_ADVERTISE, vptr->mac_regs);
803                 MII_REG_BITS_ON(ADVERTISE_PAUSE_ASYM, MII_ADVERTISE, vptr->mac_regs);
804                 break;
805 
806         case FLOW_CNTL_TX_RX:
807                 MII_REG_BITS_ON(ADVERTISE_PAUSE_CAP, MII_ADVERTISE, vptr->mac_regs);
808                 MII_REG_BITS_OFF(ADVERTISE_PAUSE_ASYM, MII_ADVERTISE, vptr->mac_regs);
809                 break;
810 
811         case FLOW_CNTL_DISABLE:
812                 MII_REG_BITS_OFF(ADVERTISE_PAUSE_CAP, MII_ADVERTISE, vptr->mac_regs);
813                 MII_REG_BITS_OFF(ADVERTISE_PAUSE_ASYM, MII_ADVERTISE, vptr->mac_regs);
814                 break;
815         default:
816                 break;
817         }
818 }
819 
820 /**
821  *      mii_set_auto_on         -       autonegotiate on
822  *      @vptr: velocity
823  *
824  *      Enable autonegotation on this interface
825  */
826 static void mii_set_auto_on(struct velocity_info *vptr)
827 {
828         if (MII_REG_BITS_IS_ON(BMCR_ANENABLE, MII_BMCR, vptr->mac_regs))
829                 MII_REG_BITS_ON(BMCR_ANRESTART, MII_BMCR, vptr->mac_regs);
830         else
831                 MII_REG_BITS_ON(BMCR_ANENABLE, MII_BMCR, vptr->mac_regs);
832 }
833 
834 static u32 check_connection_type(struct mac_regs __iomem *regs)
835 {
836         u32 status = 0;
837         u8 PHYSR0;
838         u16 ANAR;
839         PHYSR0 = readb(&regs->PHYSR0);
840 
841         /*
842            if (!(PHYSR0 & PHYSR0_LINKGD))
843            status|=VELOCITY_LINK_FAIL;
844          */
845 
846         if (PHYSR0 & PHYSR0_FDPX)
847                 status |= VELOCITY_DUPLEX_FULL;
848 
849         if (PHYSR0 & PHYSR0_SPDG)
850                 status |= VELOCITY_SPEED_1000;
851         else if (PHYSR0 & PHYSR0_SPD10)
852                 status |= VELOCITY_SPEED_10;
853         else
854                 status |= VELOCITY_SPEED_100;
855 
856         if (MII_REG_BITS_IS_ON(BMCR_ANENABLE, MII_BMCR, regs)) {
857                 velocity_mii_read(regs, MII_ADVERTISE, &ANAR);
858                 if ((ANAR & (ADVERTISE_100FULL | ADVERTISE_100HALF | ADVERTISE_10FULL | ADVERTISE_10HALF))
859                     == (ADVERTISE_100FULL | ADVERTISE_100HALF | ADVERTISE_10FULL | ADVERTISE_10HALF)) {
860                         if (MII_REG_BITS_IS_ON(ADVERTISE_1000HALF | ADVERTISE_1000FULL, MII_CTRL1000, regs))
861                                 status |= VELOCITY_AUTONEG_ENABLE;
862                 }
863         }
864 
865         return status;
866 }
867 
868 /**
869  *      velocity_set_media_mode         -       set media mode
870  *      @mii_status: old MII link state
871  *
872  *      Check the media link state and configure the flow control
873  *      PHY and also velocity hardware setup accordingly. In particular
874  *      we need to set up CD polling and frame bursting.
875  */
876 static int velocity_set_media_mode(struct velocity_info *vptr, u32 mii_status)
877 {
878         u32 curr_status;
879         struct mac_regs __iomem *regs = vptr->mac_regs;
880 
881         vptr->mii_status = mii_check_media_mode(vptr->mac_regs);
882         curr_status = vptr->mii_status & (~VELOCITY_LINK_FAIL);
883 
884         /* Set mii link status */
885         set_mii_flow_control(vptr);
886 
887         /*
888            Check if new status is consistent with current status
889            if (((mii_status & curr_status) & VELOCITY_AUTONEG_ENABLE) ||
890                (mii_status==curr_status)) {
891            vptr->mii_status=mii_check_media_mode(vptr->mac_regs);
892            vptr->mii_status=check_connection_type(vptr->mac_regs);
893            VELOCITY_PRT(MSG_LEVEL_INFO, "Velocity link no change\n");
894            return 0;
895            }
896          */
897 
898         if (PHYID_GET_PHY_ID(vptr->phy_id) == PHYID_CICADA_CS8201)
899                 MII_REG_BITS_ON(AUXCR_MDPPS, MII_NCONFIG, vptr->mac_regs);
900 
901         /*
902          *      If connection type is AUTO
903          */
904         if (mii_status & VELOCITY_AUTONEG_ENABLE) {
905                 VELOCITY_PRT(MSG_LEVEL_INFO, "Velocity is AUTO mode\n");
906                 /* clear force MAC mode bit */
907                 BYTE_REG_BITS_OFF(CHIPGCR_FCMODE, &regs->CHIPGCR);
908                 /* set duplex mode of MAC according to duplex mode of MII */
909                 MII_REG_BITS_ON(ADVERTISE_100FULL | ADVERTISE_100HALF | ADVERTISE_10FULL | ADVERTISE_10HALF, MII_ADVERTISE, vptr->mac_regs);
910                 MII_REG_BITS_ON(ADVERTISE_1000FULL | ADVERTISE_1000HALF, MII_CTRL1000, vptr->mac_regs);
911                 MII_REG_BITS_ON(BMCR_SPEED1000, MII_BMCR, vptr->mac_regs);
912 
913                 /* enable AUTO-NEGO mode */
914                 mii_set_auto_on(vptr);
915         } else {
916                 u16 CTRL1000;
917                 u16 ANAR;
918                 u8 CHIPGCR;
919 
920                 /*
921                  * 1. if it's 3119, disable frame bursting in halfduplex mode
922                  *    and enable it in fullduplex mode
923                  * 2. set correct MII/GMII and half/full duplex mode in CHIPGCR
924                  * 3. only enable CD heart beat counter in 10HD mode
925                  */
926 
927                 /* set force MAC mode bit */
928                 BYTE_REG_BITS_ON(CHIPGCR_FCMODE, &regs->CHIPGCR);
929 
930                 CHIPGCR = readb(&regs->CHIPGCR);
931 
932                 if (mii_status & VELOCITY_SPEED_1000)
933                         CHIPGCR |= CHIPGCR_FCGMII;
934                 else
935                         CHIPGCR &= ~CHIPGCR_FCGMII;
936 
937                 if (mii_status & VELOCITY_DUPLEX_FULL) {
938                         CHIPGCR |= CHIPGCR_FCFDX;
939                         writeb(CHIPGCR, &regs->CHIPGCR);
940                         VELOCITY_PRT(MSG_LEVEL_INFO, "set Velocity to forced full mode\n");
941                         if (vptr->rev_id < REV_ID_VT3216_A0)
942                                 BYTE_REG_BITS_OFF(TCR_TB2BDIS, &regs->TCR);
943                 } else {
944                         CHIPGCR &= ~CHIPGCR_FCFDX;
945                         VELOCITY_PRT(MSG_LEVEL_INFO, "set Velocity to forced half mode\n");
946                         writeb(CHIPGCR, &regs->CHIPGCR);
947                         if (vptr->rev_id < REV_ID_VT3216_A0)
948                                 BYTE_REG_BITS_ON(TCR_TB2BDIS, &regs->TCR);
949                 }
950 
951                 velocity_mii_read(vptr->mac_regs, MII_CTRL1000, &CTRL1000);
952                 CTRL1000 &= ~(ADVERTISE_1000FULL | ADVERTISE_1000HALF);
953                 if ((mii_status & VELOCITY_SPEED_1000) &&
954                     (mii_status & VELOCITY_DUPLEX_FULL)) {
955                         CTRL1000 |= ADVERTISE_1000FULL;
956                 }
957                 velocity_mii_write(vptr->mac_regs, MII_CTRL1000, CTRL1000);
958 
959                 if (!(mii_status & VELOCITY_DUPLEX_FULL) && (mii_status & VELOCITY_SPEED_10))
960                         BYTE_REG_BITS_OFF(TESTCFG_HBDIS, &regs->TESTCFG);
961                 else
962                         BYTE_REG_BITS_ON(TESTCFG_HBDIS, &regs->TESTCFG);
963 
964                 /* MII_REG_BITS_OFF(BMCR_SPEED1000, MII_BMCR, vptr->mac_regs); */
965                 velocity_mii_read(vptr->mac_regs, MII_ADVERTISE, &ANAR);
966                 ANAR &= (~(ADVERTISE_100FULL | ADVERTISE_100HALF | ADVERTISE_10FULL | ADVERTISE_10HALF));
967                 if (mii_status & VELOCITY_SPEED_100) {
968                         if (mii_status & VELOCITY_DUPLEX_FULL)
969                                 ANAR |= ADVERTISE_100FULL;
970                         else
971                                 ANAR |= ADVERTISE_100HALF;
972                 } else if (mii_status & VELOCITY_SPEED_10) {
973                         if (mii_status & VELOCITY_DUPLEX_FULL)
974                                 ANAR |= ADVERTISE_10FULL;
975                         else
976                                 ANAR |= ADVERTISE_10HALF;
977                 }
978                 velocity_mii_write(vptr->mac_regs, MII_ADVERTISE, ANAR);
979                 /* enable AUTO-NEGO mode */
980                 mii_set_auto_on(vptr);
981                 /* MII_REG_BITS_ON(BMCR_ANENABLE, MII_BMCR, vptr->mac_regs); */
982         }
983         /* vptr->mii_status=mii_check_media_mode(vptr->mac_regs); */
984         /* vptr->mii_status=check_connection_type(vptr->mac_regs); */
985         return VELOCITY_LINK_CHANGE;
986 }
987 
988 /**
989  *      velocity_print_link_status      -       link status reporting
990  *      @vptr: velocity to report on
991  *
992  *      Turn the link status of the velocity card into a kernel log
993  *      description of the new link state, detailing speed and duplex
994  *      status
995  */
996 static void velocity_print_link_status(struct velocity_info *vptr)
997 {
998 
999         if (vptr->mii_status & VELOCITY_LINK_FAIL) {
1000                 VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: failed to detect cable link\n", vptr->netdev->name);
1001         } else if (vptr->options.spd_dpx == SPD_DPX_AUTO) {
1002                 VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: Link auto-negotiation", vptr->netdev->name);
1003 
1004                 if (vptr->mii_status & VELOCITY_SPEED_1000)
1005                         VELOCITY_PRT(MSG_LEVEL_INFO, " speed 1000M bps");
1006                 else if (vptr->mii_status & VELOCITY_SPEED_100)
1007                         VELOCITY_PRT(MSG_LEVEL_INFO, " speed 100M bps");
1008                 else
1009                         VELOCITY_PRT(MSG_LEVEL_INFO, " speed 10M bps");
1010 
1011                 if (vptr->mii_status & VELOCITY_DUPLEX_FULL)
1012                         VELOCITY_PRT(MSG_LEVEL_INFO, " full duplex\n");
1013                 else
1014                         VELOCITY_PRT(MSG_LEVEL_INFO, " half duplex\n");
1015         } else {
1016                 VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: Link forced", vptr->netdev->name);
1017                 switch (vptr->options.spd_dpx) {
1018                 case SPD_DPX_1000_FULL:
1019                         VELOCITY_PRT(MSG_LEVEL_INFO, " speed 1000M bps full duplex\n");
1020                         break;
1021                 case SPD_DPX_100_HALF:
1022                         VELOCITY_PRT(MSG_LEVEL_INFO, " speed 100M bps half duplex\n");
1023                         break;
1024                 case SPD_DPX_100_FULL:
1025                         VELOCITY_PRT(MSG_LEVEL_INFO, " speed 100M bps full duplex\n");
1026                         break;
1027                 case SPD_DPX_10_HALF:
1028                         VELOCITY_PRT(MSG_LEVEL_INFO, " speed 10M bps half duplex\n");
1029                         break;
1030                 case SPD_DPX_10_FULL:
1031                         VELOCITY_PRT(MSG_LEVEL_INFO, " speed 10M bps full duplex\n");
1032                         break;
1033                 default:
1034                         break;
1035                 }
1036         }
1037 }
1038 
1039 /**
1040  *      enable_flow_control_ability     -       flow control
1041  *      @vptr: veloity to configure
1042  *
1043  *      Set up flow control according to the flow control options
1044  *      determined by the eeprom/configuration.
1045  */
1046 static void enable_flow_control_ability(struct velocity_info *vptr)
1047 {
1048 
1049         struct mac_regs __iomem *regs = vptr->mac_regs;
1050 
1051         switch (vptr->options.flow_cntl) {
1052 
1053         case FLOW_CNTL_DEFAULT:
1054                 if (BYTE_REG_BITS_IS_ON(PHYSR0_RXFLC, &regs->PHYSR0))
1055                         writel(CR0_FDXRFCEN, &regs->CR0Set);
1056                 else
1057                         writel(CR0_FDXRFCEN, &regs->CR0Clr);
1058 
1059                 if (BYTE_REG_BITS_IS_ON(PHYSR0_TXFLC, &regs->PHYSR0))
1060                         writel(CR0_FDXTFCEN, &regs->CR0Set);
1061                 else
1062                         writel(CR0_FDXTFCEN, &regs->CR0Clr);
1063                 break;
1064 
1065         case FLOW_CNTL_TX:
1066                 writel(CR0_FDXTFCEN, &regs->CR0Set);
1067                 writel(CR0_FDXRFCEN, &regs->CR0Clr);
1068                 break;
1069 
1070         case FLOW_CNTL_RX:
1071                 writel(CR0_FDXRFCEN, &regs->CR0Set);
1072                 writel(CR0_FDXTFCEN, &regs->CR0Clr);
1073                 break;
1074 
1075         case FLOW_CNTL_TX_RX:
1076                 writel(CR0_FDXTFCEN, &regs->CR0Set);
1077                 writel(CR0_FDXRFCEN, &regs->CR0Set);
1078                 break;
1079 
1080         case FLOW_CNTL_DISABLE:
1081                 writel(CR0_FDXRFCEN, &regs->CR0Clr);
1082                 writel(CR0_FDXTFCEN, &regs->CR0Clr);
1083                 break;
1084 
1085         default:
1086                 break;
1087         }
1088 
1089 }
1090 
1091 /**
1092  *      velocity_soft_reset     -       soft reset
1093  *      @vptr: velocity to reset
1094  *
1095  *      Kick off a soft reset of the velocity adapter and then poll
1096  *      until the reset sequence has completed before returning.
1097  */
1098 static int velocity_soft_reset(struct velocity_info *vptr)
1099 {
1100         struct mac_regs __iomem *regs = vptr->mac_regs;
1101         int i = 0;
1102 
1103         writel(CR0_SFRST, &regs->CR0Set);
1104 
1105         for (i = 0; i < W_MAX_TIMEOUT; i++) {
1106                 udelay(5);
1107                 if (!DWORD_REG_BITS_IS_ON(CR0_SFRST, &regs->CR0Set))
1108                         break;
1109         }
1110 
1111         if (i == W_MAX_TIMEOUT) {
1112                 writel(CR0_FORSRST, &regs->CR0Set);
1113                 /* FIXME: PCI POSTING */
1114                 /* delay 2ms */
1115                 mdelay(2);
1116         }
1117         return 0;
1118 }
1119 
1120 /**
1121  *      velocity_set_multi      -       filter list change callback
1122  *      @dev: network device
1123  *
1124  *      Called by the network layer when the filter lists need to change
1125  *      for a velocity adapter. Reload the CAMs with the new address
1126  *      filter ruleset.
1127  */
1128 static void velocity_set_multi(struct net_device *dev)
1129 {
1130         struct velocity_info *vptr = netdev_priv(dev);
1131         struct mac_regs __iomem *regs = vptr->mac_regs;
1132         u8 rx_mode;
1133         int i;
1134         struct netdev_hw_addr *ha;
1135 
1136         if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */
1137                 writel(0xffffffff, &regs->MARCAM[0]);
1138                 writel(0xffffffff, &regs->MARCAM[4]);
1139                 rx_mode = (RCR_AM | RCR_AB | RCR_PROM);
1140         } else if ((netdev_mc_count(dev) > vptr->multicast_limit) ||
1141                    (dev->flags & IFF_ALLMULTI)) {
1142                 writel(0xffffffff, &regs->MARCAM[0]);
1143                 writel(0xffffffff, &regs->MARCAM[4]);
1144                 rx_mode = (RCR_AM | RCR_AB);
1145         } else {
1146                 int offset = MCAM_SIZE - vptr->multicast_limit;
1147                 mac_get_cam_mask(regs, vptr->mCAMmask);
1148 
1149                 i = 0;
1150                 netdev_for_each_mc_addr(ha, dev) {
1151                         mac_set_cam(regs, i + offset, ha->addr);
1152                         vptr->mCAMmask[(offset + i) / 8] |= 1 << ((offset + i) & 7);
1153                         i++;
1154                 }
1155 
1156                 mac_set_cam_mask(regs, vptr->mCAMmask);
1157                 rx_mode = RCR_AM | RCR_AB | RCR_AP;
1158         }
1159         if (dev->mtu > 1500)
1160                 rx_mode |= RCR_AL;
1161 
1162         BYTE_REG_BITS_ON(rx_mode, &regs->RCR);
1163 
1164 }
1165 
1166 /*
1167  * MII access , media link mode setting functions
1168  */
1169 
1170 /**
1171  *      mii_init        -       set up MII
1172  *      @vptr: velocity adapter
1173  *      @mii_status:  links tatus
1174  *
1175  *      Set up the PHY for the current link state.
1176  */
1177 static void mii_init(struct velocity_info *vptr, u32 mii_status)
1178 {
1179         u16 BMCR;
1180 
1181         switch (PHYID_GET_PHY_ID(vptr->phy_id)) {
1182         case PHYID_ICPLUS_IP101A:
1183                 MII_REG_BITS_ON((ADVERTISE_PAUSE_ASYM | ADVERTISE_PAUSE_CAP),
1184                                                 MII_ADVERTISE, vptr->mac_regs);
1185                 if (vptr->mii_status & VELOCITY_DUPLEX_FULL)
1186                         MII_REG_BITS_ON(TCSR_ECHODIS, MII_SREVISION,
1187                                                                 vptr->mac_regs);
1188                 else
1189                         MII_REG_BITS_OFF(TCSR_ECHODIS, MII_SREVISION,
1190                                                                 vptr->mac_regs);
1191                 MII_REG_BITS_ON(PLED_LALBE, MII_TPISTATUS, vptr->mac_regs);
1192                 break;
1193         case PHYID_CICADA_CS8201:
1194                 /*
1195                  *      Reset to hardware default
1196                  */
1197                 MII_REG_BITS_OFF((ADVERTISE_PAUSE_ASYM | ADVERTISE_PAUSE_CAP), MII_ADVERTISE, vptr->mac_regs);
1198                 /*
1199                  *      Turn on ECHODIS bit in NWay-forced full mode and turn it
1200                  *      off it in NWay-forced half mode for NWay-forced v.s.
1201                  *      legacy-forced issue.
1202                  */
1203                 if (vptr->mii_status & VELOCITY_DUPLEX_FULL)
1204                         MII_REG_BITS_ON(TCSR_ECHODIS, MII_SREVISION, vptr->mac_regs);
1205                 else
1206                         MII_REG_BITS_OFF(TCSR_ECHODIS, MII_SREVISION, vptr->mac_regs);
1207                 /*
1208                  *      Turn on Link/Activity LED enable bit for CIS8201
1209                  */
1210                 MII_REG_BITS_ON(PLED_LALBE, MII_TPISTATUS, vptr->mac_regs);
1211                 break;
1212         case PHYID_VT3216_32BIT:
1213         case PHYID_VT3216_64BIT:
1214                 /*
1215                  *      Reset to hardware default
1216                  */
1217                 MII_REG_BITS_ON((ADVERTISE_PAUSE_ASYM | ADVERTISE_PAUSE_CAP), MII_ADVERTISE, vptr->mac_regs);
1218                 /*
1219                  *      Turn on ECHODIS bit in NWay-forced full mode and turn it
1220                  *      off it in NWay-forced half mode for NWay-forced v.s.
1221                  *      legacy-forced issue
1222                  */
1223                 if (vptr->mii_status & VELOCITY_DUPLEX_FULL)
1224                         MII_REG_BITS_ON(TCSR_ECHODIS, MII_SREVISION, vptr->mac_regs);
1225                 else
1226                         MII_REG_BITS_OFF(TCSR_ECHODIS, MII_SREVISION, vptr->mac_regs);
1227                 break;
1228 
1229         case PHYID_MARVELL_1000:
1230         case PHYID_MARVELL_1000S:
1231                 /*
1232                  *      Assert CRS on Transmit
1233                  */
1234                 MII_REG_BITS_ON(PSCR_ACRSTX, MII_REG_PSCR, vptr->mac_regs);
1235                 /*
1236                  *      Reset to hardware default
1237                  */
1238                 MII_REG_BITS_ON((ADVERTISE_PAUSE_ASYM | ADVERTISE_PAUSE_CAP), MII_ADVERTISE, vptr->mac_regs);
1239                 break;
1240         default:
1241                 ;
1242         }
1243         velocity_mii_read(vptr->mac_regs, MII_BMCR, &BMCR);
1244         if (BMCR & BMCR_ISOLATE) {
1245                 BMCR &= ~BMCR_ISOLATE;
1246                 velocity_mii_write(vptr->mac_regs, MII_BMCR, BMCR);
1247         }
1248 }
1249 
1250 /**
1251  * setup_queue_timers   -       Setup interrupt timers
1252  *
1253  * Setup interrupt frequency during suppression (timeout if the frame
1254  * count isn't filled).
1255  */
1256 static void setup_queue_timers(struct velocity_info *vptr)
1257 {
1258         /* Only for newer revisions */
1259         if (vptr->rev_id >= REV_ID_VT3216_A0) {
1260                 u8 txqueue_timer = 0;
1261                 u8 rxqueue_timer = 0;
1262 
1263                 if (vptr->mii_status & (VELOCITY_SPEED_1000 |
1264                                 VELOCITY_SPEED_100)) {
1265                         txqueue_timer = vptr->options.txqueue_timer;
1266                         rxqueue_timer = vptr->options.rxqueue_timer;
1267                 }
1268 
1269                 writeb(txqueue_timer, &vptr->mac_regs->TQETMR);
1270                 writeb(rxqueue_timer, &vptr->mac_regs->RQETMR);
1271         }
1272 }
1273 
1274 /**
1275  * setup_adaptive_interrupts  -  Setup interrupt suppression
1276  *
1277  * @vptr velocity adapter
1278  *
1279  * The velocity is able to suppress interrupt during high interrupt load.
1280  * This function turns on that feature.
1281  */
1282 static void setup_adaptive_interrupts(struct velocity_info *vptr)
1283 {
1284         struct mac_regs __iomem *regs = vptr->mac_regs;
1285         u16 tx_intsup = vptr->options.tx_intsup;
1286         u16 rx_intsup = vptr->options.rx_intsup;
1287 
1288         /* Setup default interrupt mask (will be changed below) */
1289         vptr->int_mask = INT_MASK_DEF;
1290 
1291         /* Set Tx Interrupt Suppression Threshold */
1292         writeb(CAMCR_PS0, &regs->CAMCR);
1293         if (tx_intsup != 0) {
1294                 vptr->int_mask &= ~(ISR_PTXI | ISR_PTX0I | ISR_PTX1I |
1295                                 ISR_PTX2I | ISR_PTX3I);
1296                 writew(tx_intsup, &regs->ISRCTL);
1297         } else
1298                 writew(ISRCTL_TSUPDIS, &regs->ISRCTL);
1299 
1300         /* Set Rx Interrupt Suppression Threshold */
1301         writeb(CAMCR_PS1, &regs->CAMCR);
1302         if (rx_intsup != 0) {
1303                 vptr->int_mask &= ~ISR_PRXI;
1304                 writew(rx_intsup, &regs->ISRCTL);
1305         } else
1306                 writew(ISRCTL_RSUPDIS, &regs->ISRCTL);
1307 
1308         /* Select page to interrupt hold timer */
1309         writeb(0, &regs->CAMCR);
1310 }
1311 
1312 /**
1313  *      velocity_init_registers -       initialise MAC registers
1314  *      @vptr: velocity to init
1315  *      @type: type of initialisation (hot or cold)
1316  *
1317  *      Initialise the MAC on a reset or on first set up on the
1318  *      hardware.
1319  */
1320 static void velocity_init_registers(struct velocity_info *vptr,
1321                                     enum velocity_init_type type)
1322 {
1323         struct mac_regs __iomem *regs = vptr->mac_regs;
1324         struct net_device *netdev = vptr->netdev;
1325         int i, mii_status;
1326 
1327         mac_wol_reset(regs);
1328 
1329         switch (type) {
1330         case VELOCITY_INIT_RESET:
1331         case VELOCITY_INIT_WOL:
1332 
1333                 netif_stop_queue(netdev);
1334 
1335                 /*
1336                  *      Reset RX to prevent RX pointer not on the 4X location
1337                  */
1338                 velocity_rx_reset(vptr);
1339                 mac_rx_queue_run(regs);
1340                 mac_rx_queue_wake(regs);
1341 
1342                 mii_status = velocity_get_opt_media_mode(vptr);
1343                 if (velocity_set_media_mode(vptr, mii_status) != VELOCITY_LINK_CHANGE) {
1344                         velocity_print_link_status(vptr);
1345                         if (!(vptr->mii_status & VELOCITY_LINK_FAIL))
1346                                 netif_wake_queue(netdev);
1347                 }
1348 
1349                 enable_flow_control_ability(vptr);
1350 
1351                 mac_clear_isr(regs);
1352                 writel(CR0_STOP, &regs->CR0Clr);
1353                 writel((CR0_DPOLL | CR0_TXON | CR0_RXON | CR0_STRT),
1354                                                         &regs->CR0Set);
1355 
1356                 break;
1357 
1358         case VELOCITY_INIT_COLD:
1359         default:
1360                 /*
1361                  *      Do reset
1362                  */
1363                 velocity_soft_reset(vptr);
1364                 mdelay(5);
1365 
1366                 if (!vptr->no_eeprom) {
1367                         mac_eeprom_reload(regs);
1368                         for (i = 0; i < 6; i++)
1369                                 writeb(netdev->dev_addr[i], regs->PAR + i);
1370                 }
1371 
1372                 /*
1373                  *      clear Pre_ACPI bit.
1374                  */
1375                 BYTE_REG_BITS_OFF(CFGA_PACPI, &(regs->CFGA));
1376                 mac_set_rx_thresh(regs, vptr->options.rx_thresh);
1377                 mac_set_dma_length(regs, vptr->options.DMA_length);
1378 
1379                 writeb(WOLCFG_SAM | WOLCFG_SAB, &regs->WOLCFGSet);
1380                 /*
1381                  *      Back off algorithm use original IEEE standard
1382                  */
1383                 BYTE_REG_BITS_SET(CFGB_OFSET, (CFGB_CRANDOM | CFGB_CAP | CFGB_MBA | CFGB_BAKOPT), &regs->CFGB);
1384 
1385                 /*
1386                  *      Init CAM filter
1387                  */
1388                 velocity_init_cam_filter(vptr);
1389 
1390                 /*
1391                  *      Set packet filter: Receive directed and broadcast address
1392                  */
1393                 velocity_set_multi(netdev);
1394 
1395                 /*
1396                  *      Enable MII auto-polling
1397                  */
1398                 enable_mii_autopoll(regs);
1399 
1400                 setup_adaptive_interrupts(vptr);
1401 
1402                 writel(vptr->rx.pool_dma, &regs->RDBaseLo);
1403                 writew(vptr->options.numrx - 1, &regs->RDCSize);
1404                 mac_rx_queue_run(regs);
1405                 mac_rx_queue_wake(regs);
1406 
1407                 writew(vptr->options.numtx - 1, &regs->TDCSize);
1408 
1409                 for (i = 0; i < vptr->tx.numq; i++) {
1410                         writel(vptr->tx.pool_dma[i], &regs->TDBaseLo[i]);
1411                         mac_tx_queue_run(regs, i);
1412                 }
1413 
1414                 init_flow_control_register(vptr);
1415 
1416                 writel(CR0_STOP, &regs->CR0Clr);
1417                 writel((CR0_DPOLL | CR0_TXON | CR0_RXON | CR0_STRT), &regs->CR0Set);
1418 
1419                 mii_status = velocity_get_opt_media_mode(vptr);
1420                 netif_stop_queue(netdev);
1421 
1422                 mii_init(vptr, mii_status);
1423 
1424                 if (velocity_set_media_mode(vptr, mii_status) != VELOCITY_LINK_CHANGE) {
1425                         velocity_print_link_status(vptr);
1426                         if (!(vptr->mii_status & VELOCITY_LINK_FAIL))
1427                                 netif_wake_queue(netdev);
1428                 }
1429 
1430                 enable_flow_control_ability(vptr);
1431                 mac_hw_mibs_init(regs);
1432                 mac_write_int_mask(vptr->int_mask, regs);
1433                 mac_clear_isr(regs);
1434 
1435         }
1436 }
1437 
1438 static void velocity_give_many_rx_descs(struct velocity_info *vptr)
1439 {
1440         struct mac_regs __iomem *regs = vptr->mac_regs;
1441         int avail, dirty, unusable;
1442 
1443         /*
1444          * RD number must be equal to 4X per hardware spec
1445          * (programming guide rev 1.20, p.13)
1446          */
1447         if (vptr->rx.filled < 4)
1448                 return;
1449 
1450         wmb();
1451 
1452         unusable = vptr->rx.filled & 0x0003;
1453         dirty = vptr->rx.dirty - unusable;
1454         for (avail = vptr->rx.filled & 0xfffc; avail; avail--) {
1455                 dirty = (dirty > 0) ? dirty - 1 : vptr->options.numrx - 1;
1456                 vptr->rx.ring[dirty].rdesc0.len |= OWNED_BY_NIC;
1457         }
1458 
1459         writew(vptr->rx.filled & 0xfffc, &regs->RBRDU);
1460         vptr->rx.filled = unusable;
1461 }
1462 
1463 /**
1464  *      velocity_init_dma_rings -       set up DMA rings
1465  *      @vptr: Velocity to set up
1466  *
1467  *      Allocate PCI mapped DMA rings for the receive and transmit layer
1468  *      to use.
1469  */
1470 static int velocity_init_dma_rings(struct velocity_info *vptr)
1471 {
1472         struct velocity_opt *opt = &vptr->options;
1473         const unsigned int rx_ring_size = opt->numrx * sizeof(struct rx_desc);
1474         const unsigned int tx_ring_size = opt->numtx * sizeof(struct tx_desc);
1475         dma_addr_t pool_dma;
1476         void *pool;
1477         unsigned int i;
1478 
1479         /*
1480          * Allocate all RD/TD rings a single pool.
1481          *
1482          * dma_alloc_coherent() fulfills the requirement for 64 bytes
1483          * alignment
1484          */
1485         pool = dma_alloc_coherent(vptr->dev, tx_ring_size * vptr->tx.numq +
1486                                     rx_ring_size, &pool_dma, GFP_ATOMIC);
1487         if (!pool) {
1488                 dev_err(vptr->dev, "%s : DMA memory allocation failed.\n",
1489                         vptr->netdev->name);
1490                 return -ENOMEM;
1491         }
1492 
1493         vptr->rx.ring = pool;
1494         vptr->rx.pool_dma = pool_dma;
1495 
1496         pool += rx_ring_size;
1497         pool_dma += rx_ring_size;
1498 
1499         for (i = 0; i < vptr->tx.numq; i++) {
1500                 vptr->tx.rings[i] = pool;
1501                 vptr->tx.pool_dma[i] = pool_dma;
1502                 pool += tx_ring_size;
1503                 pool_dma += tx_ring_size;
1504         }
1505 
1506         return 0;
1507 }
1508 
1509 static void velocity_set_rxbufsize(struct velocity_info *vptr, int mtu)
1510 {
1511         vptr->rx.buf_sz = (mtu <= ETH_DATA_LEN) ? PKT_BUF_SZ : mtu + 32;
1512 }
1513 
1514 /**
1515  *      velocity_alloc_rx_buf   -       allocate aligned receive buffer
1516  *      @vptr: velocity
1517  *      @idx: ring index
1518  *
1519  *      Allocate a new full sized buffer for the reception of a frame and
1520  *      map it into PCI space for the hardware to use. The hardware
1521  *      requires *64* byte alignment of the buffer which makes life
1522  *      less fun than would be ideal.
1523  */
1524 static int velocity_alloc_rx_buf(struct velocity_info *vptr, int idx)
1525 {
1526         struct rx_desc *rd = &(vptr->rx.ring[idx]);
1527         struct velocity_rd_info *rd_info = &(vptr->rx.info[idx]);
1528 
1529         rd_info->skb = netdev_alloc_skb(vptr->netdev, vptr->rx.buf_sz + 64);
1530         if (rd_info->skb == NULL)
1531                 return -ENOMEM;
1532 
1533         /*
1534          *      Do the gymnastics to get the buffer head for data at
1535          *      64byte alignment.
1536          */
1537         skb_reserve(rd_info->skb,
1538                         64 - ((unsigned long) rd_info->skb->data & 63));
1539         rd_info->skb_dma = dma_map_single(vptr->dev, rd_info->skb->data,
1540                                         vptr->rx.buf_sz, DMA_FROM_DEVICE);
1541 
1542         /*
1543          *      Fill in the descriptor to match
1544          */
1545 
1546         *((u32 *) & (rd->rdesc0)) = 0;
1547         rd->size = cpu_to_le16(vptr->rx.buf_sz) | RX_INTEN;
1548         rd->pa_low = cpu_to_le32(rd_info->skb_dma);
1549         rd->pa_high = 0;
1550         return 0;
1551 }
1552 
1553 
1554 static int velocity_rx_refill(struct velocity_info *vptr)
1555 {
1556         int dirty = vptr->rx.dirty, done = 0;
1557 
1558         do {
1559                 struct rx_desc *rd = vptr->rx.ring + dirty;
1560 
1561                 /* Fine for an all zero Rx desc at init time as well */
1562                 if (rd->rdesc0.len & OWNED_BY_NIC)
1563                         break;
1564 
1565                 if (!vptr->rx.info[dirty].skb) {
1566                         if (velocity_alloc_rx_buf(vptr, dirty) < 0)
1567                                 break;
1568                 }
1569                 done++;
1570                 dirty = (dirty < vptr->options.numrx - 1) ? dirty + 1 : 0;
1571         } while (dirty != vptr->rx.curr);
1572 
1573         if (done) {
1574                 vptr->rx.dirty = dirty;
1575                 vptr->rx.filled += done;
1576         }
1577 
1578         return done;
1579 }
1580 
1581 /**
1582  *      velocity_free_rd_ring   -       free receive ring
1583  *      @vptr: velocity to clean up
1584  *
1585  *      Free the receive buffers for each ring slot and any
1586  *      attached socket buffers that need to go away.
1587  */
1588 static void velocity_free_rd_ring(struct velocity_info *vptr)
1589 {
1590         int i;
1591 
1592         if (vptr->rx.info == NULL)
1593                 return;
1594 
1595         for (i = 0; i < vptr->options.numrx; i++) {
1596                 struct velocity_rd_info *rd_info = &(vptr->rx.info[i]);
1597                 struct rx_desc *rd = vptr->rx.ring + i;
1598 
1599                 memset(rd, 0, sizeof(*rd));
1600 
1601                 if (!rd_info->skb)
1602                         continue;
1603                 dma_unmap_single(vptr->dev, rd_info->skb_dma, vptr->rx.buf_sz,
1604                                  DMA_FROM_DEVICE);
1605                 rd_info->skb_dma = 0;
1606 
1607                 dev_kfree_skb(rd_info->skb);
1608                 rd_info->skb = NULL;
1609         }
1610 
1611         kfree(vptr->rx.info);
1612         vptr->rx.info = NULL;
1613 }
1614 
1615 /**
1616  *      velocity_init_rd_ring   -       set up receive ring
1617  *      @vptr: velocity to configure
1618  *
1619  *      Allocate and set up the receive buffers for each ring slot and
1620  *      assign them to the network adapter.
1621  */
1622 static int velocity_init_rd_ring(struct velocity_info *vptr)
1623 {
1624         int ret = -ENOMEM;
1625 
1626         vptr->rx.info = kcalloc(vptr->options.numrx,
1627                                 sizeof(struct velocity_rd_info), GFP_KERNEL);
1628         if (!vptr->rx.info)
1629                 goto out;
1630 
1631         velocity_init_rx_ring_indexes(vptr);
1632 
1633         if (velocity_rx_refill(vptr) != vptr->options.numrx) {
1634                 VELOCITY_PRT(MSG_LEVEL_ERR, KERN_ERR
1635                         "%s: failed to allocate RX buffer.\n", vptr->netdev->name);
1636                 velocity_free_rd_ring(vptr);
1637                 goto out;
1638         }
1639 
1640         ret = 0;
1641 out:
1642         return ret;
1643 }
1644 
1645 /**
1646  *      velocity_init_td_ring   -       set up transmit ring
1647  *      @vptr:  velocity
1648  *
1649  *      Set up the transmit ring and chain the ring pointers together.
1650  *      Returns zero on success or a negative posix errno code for
1651  *      failure.
1652  */
1653 static int velocity_init_td_ring(struct velocity_info *vptr)
1654 {
1655         int j;
1656 
1657         /* Init the TD ring entries */
1658         for (j = 0; j < vptr->tx.numq; j++) {
1659 
1660                 vptr->tx.infos[j] = kcalloc(vptr->options.numtx,
1661                                             sizeof(struct velocity_td_info),
1662                                             GFP_KERNEL);
1663                 if (!vptr->tx.infos[j]) {
1664                         while (--j >= 0)
1665                                 kfree(vptr->tx.infos[j]);
1666                         return -ENOMEM;
1667                 }
1668 
1669                 vptr->tx.tail[j] = vptr->tx.curr[j] = vptr->tx.used[j] = 0;
1670         }
1671         return 0;
1672 }
1673 
1674 /**
1675  *      velocity_free_dma_rings -       free PCI ring pointers
1676  *      @vptr: Velocity to free from
1677  *
1678  *      Clean up the PCI ring buffers allocated to this velocity.
1679  */
1680 static void velocity_free_dma_rings(struct velocity_info *vptr)
1681 {
1682         const int size = vptr->options.numrx * sizeof(struct rx_desc) +
1683                 vptr->options.numtx * sizeof(struct tx_desc) * vptr->tx.numq;
1684 
1685         dma_free_coherent(vptr->dev, size, vptr->rx.ring, vptr->rx.pool_dma);
1686 }
1687 
1688 static int velocity_init_rings(struct velocity_info *vptr, int mtu)
1689 {
1690         int ret;
1691 
1692         velocity_set_rxbufsize(vptr, mtu);
1693 
1694         ret = velocity_init_dma_rings(vptr);
1695         if (ret < 0)
1696                 goto out;
1697 
1698         ret = velocity_init_rd_ring(vptr);
1699         if (ret < 0)
1700                 goto err_free_dma_rings_0;
1701 
1702         ret = velocity_init_td_ring(vptr);
1703         if (ret < 0)
1704                 goto err_free_rd_ring_1;
1705 out:
1706         return ret;
1707 
1708 err_free_rd_ring_1:
1709         velocity_free_rd_ring(vptr);
1710 err_free_dma_rings_0:
1711         velocity_free_dma_rings(vptr);
1712         goto out;
1713 }
1714 
1715 /**
1716  *      velocity_free_tx_buf    -       free transmit buffer
1717  *      @vptr: velocity
1718  *      @tdinfo: buffer
1719  *
1720  *      Release an transmit buffer. If the buffer was preallocated then
1721  *      recycle it, if not then unmap the buffer.
1722  */
1723 static void velocity_free_tx_buf(struct velocity_info *vptr,
1724                 struct velocity_td_info *tdinfo, struct tx_desc *td)
1725 {
1726         struct sk_buff *skb = tdinfo->skb;
1727 
1728         /*
1729          *      Don't unmap the pre-allocated tx_bufs
1730          */
1731         if (tdinfo->skb_dma) {
1732                 int i;
1733 
1734                 for (i = 0; i < tdinfo->nskb_dma; i++) {
1735                         size_t pktlen = max_t(size_t, skb->len, ETH_ZLEN);
1736 
1737                         /* For scatter-gather */
1738                         if (skb_shinfo(skb)->nr_frags > 0)
1739                                 pktlen = max_t(size_t, pktlen,
1740                                                 td->td_buf[i].size & ~TD_QUEUE);
1741 
1742                         dma_unmap_single(vptr->dev, tdinfo->skb_dma[i],
1743                                         le16_to_cpu(pktlen), DMA_TO_DEVICE);
1744                 }
1745         }
1746         dev_kfree_skb_irq(skb);
1747         tdinfo->skb = NULL;
1748 }
1749 
1750 /*
1751  *      FIXME: could we merge this with velocity_free_tx_buf ?
1752  */
1753 static void velocity_free_td_ring_entry(struct velocity_info *vptr,
1754                                                          int q, int n)
1755 {
1756         struct velocity_td_info *td_info = &(vptr->tx.infos[q][n]);
1757         int i;
1758 
1759         if (td_info == NULL)
1760                 return;
1761 
1762         if (td_info->skb) {
1763                 for (i = 0; i < td_info->nskb_dma; i++) {
1764                         if (td_info->skb_dma[i]) {
1765                                 dma_unmap_single(vptr->dev, td_info->skb_dma[i],
1766                                         td_info->skb->len, DMA_TO_DEVICE);
1767                                 td_info->skb_dma[i] = 0;
1768                         }
1769                 }
1770                 dev_kfree_skb(td_info->skb);
1771                 td_info->skb = NULL;
1772         }
1773 }
1774 
1775 /**
1776  *      velocity_free_td_ring   -       free td ring
1777  *      @vptr: velocity
1778  *
1779  *      Free up the transmit ring for this particular velocity adapter.
1780  *      We free the ring contents but not the ring itself.
1781  */
1782 static void velocity_free_td_ring(struct velocity_info *vptr)
1783 {
1784         int i, j;
1785 
1786         for (j = 0; j < vptr->tx.numq; j++) {
1787                 if (vptr->tx.infos[j] == NULL)
1788                         continue;
1789                 for (i = 0; i < vptr->options.numtx; i++)
1790                         velocity_free_td_ring_entry(vptr, j, i);
1791 
1792                 kfree(vptr->tx.infos[j]);
1793                 vptr->tx.infos[j] = NULL;
1794         }
1795 }
1796 
1797 static void velocity_free_rings(struct velocity_info *vptr)
1798 {
1799         velocity_free_td_ring(vptr);
1800         velocity_free_rd_ring(vptr);
1801         velocity_free_dma_rings(vptr);
1802 }
1803 
1804 /**
1805  *      velocity_error  -       handle error from controller
1806  *      @vptr: velocity
1807  *      @status: card status
1808  *
1809  *      Process an error report from the hardware and attempt to recover
1810  *      the card itself. At the moment we cannot recover from some
1811  *      theoretically impossible errors but this could be fixed using
1812  *      the pci_device_failed logic to bounce the hardware
1813  *
1814  */
1815 static void velocity_error(struct velocity_info *vptr, int status)
1816 {
1817 
1818         if (status & ISR_TXSTLI) {
1819                 struct mac_regs __iomem *regs = vptr->mac_regs;
1820 
1821                 printk(KERN_ERR "TD structure error TDindex=%hx\n", readw(&regs->TDIdx[0]));
1822                 BYTE_REG_BITS_ON(TXESR_TDSTR, &regs->TXESR);
1823                 writew(TRDCSR_RUN, &regs->TDCSRClr);
1824                 netif_stop_queue(vptr->netdev);
1825 
1826                 /* FIXME: port over the pci_device_failed code and use it
1827                    here */
1828         }
1829 
1830         if (status & ISR_SRCI) {
1831                 struct mac_regs __iomem *regs = vptr->mac_regs;
1832                 int linked;
1833 
1834                 if (vptr->options.spd_dpx == SPD_DPX_AUTO) {
1835                         vptr->mii_status = check_connection_type(regs);
1836 
1837                         /*
1838                          *      If it is a 3119, disable frame bursting in
1839                          *      halfduplex mode and enable it in fullduplex
1840                          *       mode
1841                          */
1842                         if (vptr->rev_id < REV_ID_VT3216_A0) {
1843                                 if (vptr->mii_status & VELOCITY_DUPLEX_FULL)
1844                                         BYTE_REG_BITS_ON(TCR_TB2BDIS, &regs->TCR);
1845                                 else
1846                                         BYTE_REG_BITS_OFF(TCR_TB2BDIS, &regs->TCR);
1847                         }
1848                         /*
1849                          *      Only enable CD heart beat counter in 10HD mode
1850                          */
1851                         if (!(vptr->mii_status & VELOCITY_DUPLEX_FULL) && (vptr->mii_status & VELOCITY_SPEED_10))
1852                                 BYTE_REG_BITS_OFF(TESTCFG_HBDIS, &regs->TESTCFG);
1853                         else
1854                                 BYTE_REG_BITS_ON(TESTCFG_HBDIS, &regs->TESTCFG);
1855 
1856                         setup_queue_timers(vptr);
1857                 }
1858                 /*
1859                  *      Get link status from PHYSR0
1860                  */
1861                 linked = readb(&regs->PHYSR0) & PHYSR0_LINKGD;
1862 
1863                 if (linked) {
1864                         vptr->mii_status &= ~VELOCITY_LINK_FAIL;
1865                         netif_carrier_on(vptr->netdev);
1866                 } else {
1867                         vptr->mii_status |= VELOCITY_LINK_FAIL;
1868                         netif_carrier_off(vptr->netdev);
1869                 }
1870 
1871                 velocity_print_link_status(vptr);
1872                 enable_flow_control_ability(vptr);
1873 
1874                 /*
1875                  *      Re-enable auto-polling because SRCI will disable
1876                  *      auto-polling
1877                  */
1878 
1879                 enable_mii_autopoll(regs);
1880 
1881                 if (vptr->mii_status & VELOCITY_LINK_FAIL)
1882                         netif_stop_queue(vptr->netdev);
1883                 else
1884                         netif_wake_queue(vptr->netdev);
1885 
1886         }
1887         if (status & ISR_MIBFI)
1888                 velocity_update_hw_mibs(vptr);
1889         if (status & ISR_LSTEI)
1890                 mac_rx_queue_wake(vptr->mac_regs);
1891 }
1892 
1893 /**
1894  *      tx_srv          -       transmit interrupt service
1895  *      @vptr; Velocity
1896  *
1897  *      Scan the queues looking for transmitted packets that
1898  *      we can complete and clean up. Update any statistics as
1899  *      necessary/
1900  */
1901 static int velocity_tx_srv(struct velocity_info *vptr)
1902 {
1903         struct tx_desc *td;
1904         int qnum;
1905         int full = 0;
1906         int idx;
1907         int works = 0;
1908         struct velocity_td_info *tdinfo;
1909         struct net_device_stats *stats = &vptr->netdev->stats;
1910 
1911         for (qnum = 0; qnum < vptr->tx.numq; qnum++) {
1912                 for (idx = vptr->tx.tail[qnum]; vptr->tx.used[qnum] > 0;
1913                         idx = (idx + 1) % vptr->options.numtx) {
1914 
1915                         /*
1916                          *      Get Tx Descriptor
1917                          */
1918                         td = &(vptr->tx.rings[qnum][idx]);
1919                         tdinfo = &(vptr->tx.infos[qnum][idx]);
1920 
1921                         if (td->tdesc0.len & OWNED_BY_NIC)
1922                                 break;
1923 
1924                         if ((works++ > 15))
1925                                 break;
1926 
1927                         if (td->tdesc0.TSR & TSR0_TERR) {
1928                                 stats->tx_errors++;
1929                                 stats->tx_dropped++;
1930                                 if (td->tdesc0.TSR & TSR0_CDH)
1931                                         stats->tx_heartbeat_errors++;
1932                                 if (td->tdesc0.TSR & TSR0_CRS)
1933                                         stats->tx_carrier_errors++;
1934                                 if (td->tdesc0.TSR & TSR0_ABT)
1935                                         stats->tx_aborted_errors++;
1936                                 if (td->tdesc0.TSR & TSR0_OWC)
1937                                         stats->tx_window_errors++;
1938                         } else {
1939                                 stats->tx_packets++;
1940                                 stats->tx_bytes += tdinfo->skb->len;
1941                         }
1942                         velocity_free_tx_buf(vptr, tdinfo, td);
1943                         vptr->tx.used[qnum]--;
1944                 }
1945                 vptr->tx.tail[qnum] = idx;
1946 
1947                 if (AVAIL_TD(vptr, qnum) < 1)
1948                         full = 1;
1949         }
1950         /*
1951          *      Look to see if we should kick the transmit network
1952          *      layer for more work.
1953          */
1954         if (netif_queue_stopped(vptr->netdev) && (full == 0) &&
1955             (!(vptr->mii_status & VELOCITY_LINK_FAIL))) {
1956                 netif_wake_queue(vptr->netdev);
1957         }
1958         return works;
1959 }
1960 
1961 /**
1962  *      velocity_rx_csum        -       checksum process
1963  *      @rd: receive packet descriptor
1964  *      @skb: network layer packet buffer
1965  *
1966  *      Process the status bits for the received packet and determine
1967  *      if the checksum was computed and verified by the hardware
1968  */
1969 static inline void velocity_rx_csum(struct rx_desc *rd, struct sk_buff *skb)
1970 {
1971         skb_checksum_none_assert(skb);
1972 
1973         if (rd->rdesc1.CSM & CSM_IPKT) {
1974                 if (rd->rdesc1.CSM & CSM_IPOK) {
1975                         if ((rd->rdesc1.CSM & CSM_TCPKT) ||
1976                                         (rd->rdesc1.CSM & CSM_UDPKT)) {
1977                                 if (!(rd->rdesc1.CSM & CSM_TUPOK))
1978                                         return;
1979                         }
1980                         skb->ip_summed = CHECKSUM_UNNECESSARY;
1981                 }
1982         }
1983 }
1984 
1985 /**
1986  *      velocity_rx_copy        -       in place Rx copy for small packets
1987  *      @rx_skb: network layer packet buffer candidate
1988  *      @pkt_size: received data size
1989  *      @rd: receive packet descriptor
1990  *      @dev: network device
1991  *
1992  *      Replace the current skb that is scheduled for Rx processing by a
1993  *      shorter, immediately allocated skb, if the received packet is small
1994  *      enough. This function returns a negative value if the received
1995  *      packet is too big or if memory is exhausted.
1996  */
1997 static int velocity_rx_copy(struct sk_buff **rx_skb, int pkt_size,
1998                             struct velocity_info *vptr)
1999 {
2000         int ret = -1;
2001         if (pkt_size < rx_copybreak) {
2002                 struct sk_buff *new_skb;
2003 
2004                 new_skb = netdev_alloc_skb_ip_align(vptr->netdev, pkt_size);
2005                 if (new_skb) {
2006                         new_skb->ip_summed = rx_skb[0]->ip_summed;
2007                         skb_copy_from_linear_data(*rx_skb, new_skb->data, pkt_size);
2008                         *rx_skb = new_skb;
2009                         ret = 0;
2010                 }
2011 
2012         }
2013         return ret;
2014 }
2015 
2016 /**
2017  *      velocity_iph_realign    -       IP header alignment
2018  *      @vptr: velocity we are handling
2019  *      @skb: network layer packet buffer
2020  *      @pkt_size: received data size
2021  *
2022  *      Align IP header on a 2 bytes boundary. This behavior can be
2023  *      configured by the user.
2024  */
2025 static inline void velocity_iph_realign(struct velocity_info *vptr,
2026                                         struct sk_buff *skb, int pkt_size)
2027 {
2028         if (vptr->flags & VELOCITY_FLAGS_IP_ALIGN) {
2029                 memmove(skb->data + 2, skb->data, pkt_size);
2030                 skb_reserve(skb, 2);
2031         }
2032 }
2033 
2034 /**
2035  *      velocity_receive_frame  -       received packet processor
2036  *      @vptr: velocity we are handling
2037  *      @idx: ring index
2038  *
2039  *      A packet has arrived. We process the packet and if appropriate
2040  *      pass the frame up the network stack
2041  */
2042 static int velocity_receive_frame(struct velocity_info *vptr, int idx)
2043 {
2044         struct net_device_stats *stats = &vptr->netdev->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;
2049 
2050         if (unlikely(rd->rdesc0.RSR & (RSR_STP | RSR_EDP | RSR_RL))) {
2051                 if (rd->rdesc0.RSR & (RSR_STP | RSR_EDP))
2052                         VELOCITY_PRT(MSG_LEVEL_VERBOSE, KERN_ERR " %s : the received frame spans multiple RDs.\n", vptr->netdev->name);
2053                 stats->rx_length_errors++;
2054                 return -EINVAL;
2055         }
2056 
2057         if (rd->rdesc0.RSR & RSR_MAR)
2058                 stats->multicast++;
2059 
2060         skb = rd_info->skb;
2061 
2062         dma_sync_single_for_cpu(vptr->dev, rd_info->skb_dma,
2063                                     vptr->rx.buf_sz, DMA_FROM_DEVICE);
2064 
2065         velocity_rx_csum(rd, skb);
2066 
2067         if (velocity_rx_copy(&skb, pkt_len, vptr) < 0) {
2068                 velocity_iph_realign(vptr, skb, pkt_len);
2069                 rd_info->skb = NULL;
2070                 dma_unmap_single(vptr->dev, rd_info->skb_dma, vptr->rx.buf_sz,
2071                                  DMA_FROM_DEVICE);
2072         } else {
2073                 dma_sync_single_for_device(vptr->dev, rd_info->skb_dma,
2074                                            vptr->rx.buf_sz, DMA_FROM_DEVICE);
2075         }
2076 
2077         skb_put(skb, pkt_len - 4);
2078         skb->protocol = eth_type_trans(skb, vptr->netdev);
2079 
2080         if (rd->rdesc0.RSR & RSR_DETAG) {
2081                 u16 vid = swab16(le16_to_cpu(rd->rdesc1.PQTAG));
2082 
2083                 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid);
2084         }
2085         netif_receive_skb(skb);
2086 
2087         stats->rx_bytes += pkt_len;
2088         stats->rx_packets++;
2089 
2090         return 0;
2091 }
2092 
2093 /**
2094  *      velocity_rx_srv         -       service RX interrupt
2095  *      @vptr: velocity
2096  *
2097  *      Walk the receive ring of the velocity adapter and remove
2098  *      any received packets from the receive queue. Hand the ring
2099  *      slots back to the adapter for reuse.
2100  */
2101 static int velocity_rx_srv(struct velocity_info *vptr, int budget_left)
2102 {
2103         struct net_device_stats *stats = &vptr->netdev->stats;
2104         int rd_curr = vptr->rx.curr;
2105         int works = 0;
2106 
2107         while (works < budget_left) {
2108                 struct rx_desc *rd = vptr->rx.ring + rd_curr;
2109 
2110                 if (!vptr->rx.info[rd_curr].skb)
2111                         break;
2112 
2113                 if (rd->rdesc0.len & OWNED_BY_NIC)
2114                         break;
2115 
2116                 rmb();
2117 
2118                 /*
2119                  *      Don't drop CE or RL error frame although RXOK is off
2120                  */
2121                 if (rd->rdesc0.RSR & (RSR_RXOK | RSR_CE | RSR_RL)) {
2122                         if (velocity_receive_frame(vptr, rd_curr) < 0)
2123                                 stats->rx_dropped++;
2124                 } else {
2125                         if (rd->rdesc0.RSR & RSR_CRC)
2126                                 stats->rx_crc_errors++;
2127                         if (rd->rdesc0.RSR & RSR_FAE)
2128                                 stats->rx_frame_errors++;
2129 
2130                         stats->rx_dropped++;
2131                 }
2132 
2133                 rd->size |= RX_INTEN;
2134 
2135                 rd_curr++;
2136                 if (rd_curr >= vptr->options.numrx)
2137                         rd_curr = 0;
2138                 works++;
2139         }
2140 
2141         vptr->rx.curr = rd_curr;
2142 
2143         if ((works > 0) && (velocity_rx_refill(vptr) > 0))
2144                 velocity_give_many_rx_descs(vptr);
2145 
2146         VAR_USED(stats);
2147         return works;
2148 }
2149 
2150 static int velocity_poll(struct napi_struct *napi, int budget)
2151 {
2152         struct velocity_info *vptr = container_of(napi,
2153                         struct velocity_info, napi);
2154         unsigned int rx_done;
2155         unsigned long flags;
2156 
2157         /*
2158          * Do rx and tx twice for performance (taken from the VIA
2159          * out-of-tree driver).
2160          */
2161         rx_done = velocity_rx_srv(vptr, budget);
2162         spin_lock_irqsave(&vptr->lock, flags);
2163         velocity_tx_srv(vptr);
2164         /* If budget not fully consumed, exit the polling mode */
2165         if (rx_done < budget) {
2166                 napi_complete(napi);
2167                 mac_enable_int(vptr->mac_regs);
2168         }
2169         spin_unlock_irqrestore(&vptr->lock, flags);
2170 
2171         return rx_done;
2172 }
2173 
2174 /**
2175  *      velocity_intr           -       interrupt callback
2176  *      @irq: interrupt number
2177  *      @dev_instance: interrupting device
2178  *
2179  *      Called whenever an interrupt is generated by the velocity
2180  *      adapter IRQ line. We may not be the source of the interrupt
2181  *      and need to identify initially if we are, and if not exit as
2182  *      efficiently as possible.
2183  */
2184 static irqreturn_t velocity_intr(int irq, void *dev_instance)
2185 {
2186         struct net_device *dev = dev_instance;
2187         struct velocity_info *vptr = netdev_priv(dev);
2188         u32 isr_status;
2189 
2190         spin_lock(&vptr->lock);
2191         isr_status = mac_read_isr(vptr->mac_regs);
2192 
2193         /* Not us ? */
2194         if (isr_status == 0) {
2195                 spin_unlock(&vptr->lock);
2196                 return IRQ_NONE;
2197         }
2198 
2199         /* Ack the interrupt */
2200         mac_write_isr(vptr->mac_regs, isr_status);
2201 
2202         if (likely(napi_schedule_prep(&vptr->napi))) {
2203                 mac_disable_int(vptr->mac_regs);
2204                 __napi_schedule(&vptr->napi);
2205         }
2206 
2207         if (isr_status & (~(ISR_PRXI | ISR_PPRXI | ISR_PTXI | ISR_PPTXI)))
2208                 velocity_error(vptr, isr_status);
2209 
2210         spin_unlock(&vptr->lock);
2211 
2212         return IRQ_HANDLED;
2213 }
2214 
2215 /**
2216  *      velocity_open           -       interface activation callback
2217  *      @dev: network layer device to open
2218  *
2219  *      Called when the network layer brings the interface up. Returns
2220  *      a negative posix error code on failure, or zero on success.
2221  *
2222  *      All the ring allocation and set up is done on open for this
2223  *      adapter to minimise memory usage when inactive
2224  */
2225 static int velocity_open(struct net_device *dev)
2226 {
2227         struct velocity_info *vptr = netdev_priv(dev);
2228         int ret;
2229 
2230         ret = velocity_init_rings(vptr, dev->mtu);
2231         if (ret < 0)
2232                 goto out;
2233 
2234         /* Ensure chip is running */
2235         velocity_set_power_state(vptr, PCI_D0);
2236 
2237         velocity_init_registers(vptr, VELOCITY_INIT_COLD);
2238 
2239         ret = request_irq(dev->irq, velocity_intr, IRQF_SHARED,
2240                           dev->name, dev);
2241         if (ret < 0) {
2242                 /* Power down the chip */
2243                 velocity_set_power_state(vptr, PCI_D3hot);
2244                 velocity_free_rings(vptr);
2245                 goto out;
2246         }
2247 
2248         velocity_give_many_rx_descs(vptr);
2249 
2250         mac_enable_int(vptr->mac_regs);
2251         netif_start_queue(dev);
2252         napi_enable(&vptr->napi);
2253         vptr->flags |= VELOCITY_FLAGS_OPENED;
2254 out:
2255         return ret;
2256 }
2257 
2258 /**
2259  *      velocity_shutdown       -       shut down the chip
2260  *      @vptr: velocity to deactivate
2261  *
2262  *      Shuts down the internal operations of the velocity and
2263  *      disables interrupts, autopolling, transmit and receive
2264  */
2265 static void velocity_shutdown(struct velocity_info *vptr)
2266 {
2267         struct mac_regs __iomem *regs = vptr->mac_regs;
2268         mac_disable_int(regs);
2269         writel(CR0_STOP, &regs->CR0Set);
2270         writew(0xFFFF, &regs->TDCSRClr);
2271         writeb(0xFF, &regs->RDCSRClr);
2272         safe_disable_mii_autopoll(regs);
2273         mac_clear_isr(regs);
2274 }
2275 
2276 /**
2277  *      velocity_change_mtu     -       MTU change callback
2278  *      @dev: network device
2279  *      @new_mtu: desired MTU
2280  *
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.
2284  */
2285 static int velocity_change_mtu(struct net_device *dev, int new_mtu)
2286 {
2287         struct velocity_info *vptr = netdev_priv(dev);
2288         int ret = 0;
2289 
2290         if ((new_mtu < VELOCITY_MIN_MTU) || new_mtu > (VELOCITY_MAX_MTU)) {
2291                 VELOCITY_PRT(MSG_LEVEL_ERR, KERN_NOTICE "%s: Invalid MTU.\n",
2292                                 vptr->netdev->name);
2293                 ret = -EINVAL;
2294                 goto out_0;
2295         }
2296 
2297         if (!netif_running(dev)) {
2298                 dev->mtu = new_mtu;
2299                 goto out_0;
2300         }
2301 
2302         if (dev->mtu != new_mtu) {
2303                 struct velocity_info *tmp_vptr;
2304                 unsigned long flags;
2305                 struct rx_info rx;
2306                 struct tx_info tx;
2307 
2308                 tmp_vptr = kzalloc(sizeof(*tmp_vptr), GFP_KERNEL);
2309                 if (!tmp_vptr) {
2310                         ret = -ENOMEM;
2311                         goto out_0;
2312                 }
2313 
2314                 tmp_vptr->netdev = dev;
2315                 tmp_vptr->pdev = vptr->pdev;
2316                 tmp_vptr->dev = vptr->dev;
2317                 tmp_vptr->options = vptr->options;
2318                 tmp_vptr->tx.numq = vptr->tx.numq;
2319 
2320                 ret = velocity_init_rings(tmp_vptr, new_mtu);
2321                 if (ret < 0)
2322                         goto out_free_tmp_vptr_1;
2323 
2324                 napi_disable(&vptr->napi);
2325 
2326                 spin_lock_irqsave(&vptr->lock, flags);
2327 
2328                 netif_stop_queue(dev);
2329                 velocity_shutdown(vptr);
2330 
2331                 rx = vptr->rx;
2332                 tx = vptr->tx;
2333 
2334                 vptr->rx = tmp_vptr->rx;
2335                 vptr->tx = tmp_vptr->tx;
2336 
2337                 tmp_vptr->rx = rx;
2338                 tmp_vptr->tx = tx;
2339 
2340                 dev->mtu = new_mtu;
2341 
2342                 velocity_init_registers(vptr, VELOCITY_INIT_COLD);
2343 
2344                 velocity_give_many_rx_descs(vptr);
2345 
2346                 napi_enable(&vptr->napi);
2347 
2348                 mac_enable_int(vptr->mac_regs);
2349                 netif_start_queue(dev);
2350 
2351                 spin_unlock_irqrestore(&vptr->lock, flags);
2352 
2353                 velocity_free_rings(tmp_vptr);
2354 
2355 out_free_tmp_vptr_1:
2356                 kfree(tmp_vptr);
2357         }
2358 out_0:
2359         return ret;
2360 }
2361 
2362 #ifdef CONFIG_NET_POLL_CONTROLLER
2363 /**
2364  *  velocity_poll_controller            -       Velocity Poll controller function
2365  *  @dev: network device
2366  *
2367  *
2368  *  Used by NETCONSOLE and other diagnostic tools to allow network I/P
2369  *  with interrupts disabled.
2370  */
2371 static void velocity_poll_controller(struct net_device *dev)
2372 {
2373         disable_irq(dev->irq);
2374         velocity_intr(dev->irq, dev);
2375         enable_irq(dev->irq);
2376 }
2377 #endif
2378 
2379 /**
2380  *      velocity_mii_ioctl              -       MII ioctl handler
2381  *      @dev: network device
2382  *      @ifr: the ifreq block for the ioctl
2383  *      @cmd: the command
2384  *
2385  *      Process MII requests made via ioctl from the network layer. These
2386  *      are used by tools like kudzu to interrogate the link state of the
2387  *      hardware
2388  */
2389 static int velocity_mii_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
2390 {
2391         struct velocity_info *vptr = netdev_priv(dev);
2392         struct mac_regs __iomem *regs = vptr->mac_regs;
2393         unsigned long flags;
2394         struct mii_ioctl_data *miidata = if_mii(ifr);
2395         int err;
2396 
2397         switch (cmd) {
2398         case SIOCGMIIPHY:
2399                 miidata->phy_id = readb(&regs->MIIADR) & 0x1f;
2400                 break;
2401         case SIOCGMIIREG:
2402                 if (velocity_mii_read(vptr->mac_regs, miidata->reg_num & 0x1f, &(miidata->val_out)) < 0)
2403                         return -ETIMEDOUT;
2404                 break;
2405         case SIOCSMIIREG:
2406                 spin_lock_irqsave(&vptr->lock, flags);
2407                 err = velocity_mii_write(vptr->mac_regs, miidata->reg_num & 0x1f, miidata->val_in);
2408                 spin_unlock_irqrestore(&vptr->lock, flags);
2409                 check_connection_type(vptr->mac_regs);
2410                 if (err)
2411                         return err;
2412                 break;
2413         default:
2414                 return -EOPNOTSUPP;
2415         }
2416         return 0;
2417 }
2418 
2419 /**
2420  *      velocity_ioctl          -       ioctl entry point
2421  *      @dev: network device
2422  *      @rq: interface request ioctl
2423  *      @cmd: command code
2424  *
2425  *      Called when the user issues an ioctl request to the network
2426  *      device in question. The velocity interface supports MII.
2427  */
2428 static int velocity_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2429 {
2430         struct velocity_info *vptr = netdev_priv(dev);
2431         int ret;
2432 
2433         /* If we are asked for information and the device is power
2434            saving then we need to bring the device back up to talk to it */
2435 
2436         if (!netif_running(dev))
2437                 velocity_set_power_state(vptr, PCI_D0);
2438 
2439         switch (cmd) {
2440         case SIOCGMIIPHY:       /* Get address of MII PHY in use. */
2441         case SIOCGMIIREG:       /* Read MII PHY register. */
2442         case SIOCSMIIREG:       /* Write to MII PHY register. */
2443                 ret = velocity_mii_ioctl(dev, rq, cmd);
2444                 break;
2445 
2446         default:
2447                 ret = -EOPNOTSUPP;
2448         }
2449         if (!netif_running(dev))
2450                 velocity_set_power_state(vptr, PCI_D3hot);
2451 
2452 
2453         return ret;
2454 }
2455 
2456 /**
2457  *      velocity_get_status     -       statistics callback
2458  *      @dev: network device
2459  *
2460  *      Callback from the network layer to allow driver statistics
2461  *      to be resynchronized with hardware collected state. In the
2462  *      case of the velocity we need to pull the MIB counters from
2463  *      the hardware into the counters before letting the network
2464  *      layer display them.
2465  */
2466 static struct net_device_stats *velocity_get_stats(struct net_device *dev)
2467 {
2468         struct velocity_info *vptr = netdev_priv(dev);
2469 
2470         /* If the hardware is down, don't touch MII */
2471         if (!netif_running(dev))
2472                 return &dev->stats;
2473 
2474         spin_lock_irq(&vptr->lock);
2475         velocity_update_hw_mibs(vptr);
2476         spin_unlock_irq(&vptr->lock);
2477 
2478         dev->stats.rx_packets = vptr->mib_counter[HW_MIB_ifRxAllPkts];
2479         dev->stats.rx_errors = vptr->mib_counter[HW_MIB_ifRxErrorPkts];
2480         dev->stats.rx_length_errors = vptr->mib_counter[HW_MIB_ifInRangeLengthErrors];
2481 
2482 //  unsigned long   rx_dropped;     /* no space in linux buffers    */
2483         dev->stats.collisions = vptr->mib_counter[HW_MIB_ifTxEtherCollisions];
2484         /* detailed rx_errors: */
2485 //  unsigned long   rx_length_errors;
2486 //  unsigned long   rx_over_errors;     /* receiver ring buff overflow  */
2487         dev->stats.rx_crc_errors = vptr->mib_counter[HW_MIB_ifRxPktCRCE];
2488 //  unsigned long   rx_frame_errors;    /* recv'd frame alignment error */
2489 //  unsigned long   rx_fifo_errors;     /* recv'r fifo overrun      */
2490 //  unsigned long   rx_missed_errors;   /* receiver missed packet   */
2491 
2492         /* detailed tx_errors */
2493 //  unsigned long   tx_fifo_errors;
2494 
2495         return &dev->stats;
2496 }
2497 
2498 /**
2499  *      velocity_close          -       close adapter callback
2500  *      @dev: network device
2501  *
2502  *      Callback from the network layer when the velocity is being
2503  *      deactivated by the network layer
2504  */
2505 static int velocity_close(struct net_device *dev)
2506 {
2507         struct velocity_info *vptr = netdev_priv(dev);
2508 
2509         napi_disable(&vptr->napi);
2510         netif_stop_queue(dev);
2511         velocity_shutdown(vptr);
2512 
2513         if (vptr->flags & VELOCITY_FLAGS_WOL_ENABLED)
2514                 velocity_get_ip(vptr);
2515 
2516         free_irq(dev->irq, dev);
2517 
2518         velocity_free_rings(vptr);
2519 
2520         vptr->flags &= (~VELOCITY_FLAGS_OPENED);
2521         return 0;
2522 }
2523 
2524 /**
2525  *      velocity_xmit           -       transmit packet callback
2526  *      @skb: buffer to transmit
2527  *      @dev: network device
2528  *
2529  *      Called by the networ layer to request a packet is queued to
2530  *      the velocity. Returns zero on success.
2531  */
2532 static netdev_tx_t velocity_xmit(struct sk_buff *skb,
2533                                  struct net_device *dev)
2534 {
2535         struct velocity_info *vptr = netdev_priv(dev);
2536         int qnum = 0;
2537         struct tx_desc *td_ptr;
2538         struct velocity_td_info *tdinfo;
2539         unsigned long flags;
2540         int pktlen;
2541         int index, prev;
2542         int i = 0;
2543 
2544         if (skb_padto(skb, ETH_ZLEN))
2545                 goto out;
2546 
2547         /* The hardware can handle at most 7 memory segments, so merge
2548          * the skb if there are more */
2549         if (skb_shinfo(skb)->nr_frags > 6 && __skb_linearize(skb)) {
2550                 dev_kfree_skb_any(skb);
2551                 return NETDEV_TX_OK;
2552         }
2553 
2554         pktlen = skb_shinfo(skb)->nr_frags == 0 ?
2555                         max_t(unsigned int, skb->len, ETH_ZLEN) :
2556                                 skb_headlen(skb);
2557 
2558         spin_lock_irqsave(&vptr->lock, flags);
2559 
2560         index = vptr->tx.curr[qnum];
2561         td_ptr = &(vptr->tx.rings[qnum][index]);
2562         tdinfo = &(vptr->tx.infos[qnum][index]);
2563 
2564         td_ptr->tdesc1.TCR = TCR0_TIC;
2565         td_ptr->td_buf[0].size &= ~TD_QUEUE;
2566 
2567         /*
2568          *      Map the linear network buffer into PCI space and
2569          *      add it to the transmit ring.
2570          */
2571         tdinfo->skb = skb;
2572         tdinfo->skb_dma[0] = dma_map_single(vptr->dev, skb->data, pktlen,
2573                                                                 DMA_TO_DEVICE);
2574         td_ptr->tdesc0.len = cpu_to_le16(pktlen);
2575         td_ptr->td_buf[0].pa_low = cpu_to_le32(tdinfo->skb_dma[0]);
2576         td_ptr->td_buf[0].pa_high = 0;
2577         td_ptr->td_buf[0].size = cpu_to_le16(pktlen);
2578 
2579         /* Handle fragments */
2580         for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
2581                 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
2582 
2583                 tdinfo->skb_dma[i + 1] = skb_frag_dma_map(vptr->dev,
2584                                                           frag, 0,
2585                                                           skb_frag_size(frag),
2586                                                           DMA_TO_DEVICE);
2587 
2588                 td_ptr->td_buf[i + 1].pa_low = cpu_to_le32(tdinfo->skb_dma[i + 1]);
2589                 td_ptr->td_buf[i + 1].pa_high = 0;
2590                 td_ptr->td_buf[i + 1].size = cpu_to_le16(skb_frag_size(frag));
2591         }
2592         tdinfo->nskb_dma = i + 1;
2593 
2594         td_ptr->tdesc1.cmd = TCPLS_NORMAL + (tdinfo->nskb_dma + 1) * 16;
2595 
2596         if (skb_vlan_tag_present(skb)) {
2597                 td_ptr->tdesc1.vlan = cpu_to_le16(skb_vlan_tag_get(skb));
2598                 td_ptr->tdesc1.TCR |= TCR0_VETAG;
2599         }
2600 
2601         /*
2602          *      Handle hardware checksum
2603          */
2604         if (skb->ip_summed == CHECKSUM_PARTIAL) {
2605                 const struct iphdr *ip = ip_hdr(skb);
2606                 if (ip->protocol == IPPROTO_TCP)
2607                         td_ptr->tdesc1.TCR |= TCR0_TCPCK;
2608                 else if (ip->protocol == IPPROTO_UDP)
2609                         td_ptr->tdesc1.TCR |= (TCR0_UDPCK);
2610                 td_ptr->tdesc1.TCR |= TCR0_IPCK;
2611         }
2612 
2613         prev = index - 1;
2614         if (prev < 0)
2615                 prev = vptr->options.numtx - 1;
2616         td_ptr->tdesc0.len |= OWNED_BY_NIC;
2617         vptr->tx.used[qnum]++;
2618         vptr->tx.curr[qnum] = (index + 1) % vptr->options.numtx;
2619 
2620         if (AVAIL_TD(vptr, qnum) < 1)
2621                 netif_stop_queue(dev);
2622 
2623         td_ptr = &(vptr->tx.rings[qnum][prev]);
2624         td_ptr->td_buf[0].size |= TD_QUEUE;
2625         mac_tx_queue_wake(vptr->mac_regs, qnum);
2626 
2627         spin_unlock_irqrestore(&vptr->lock, flags);
2628 out:
2629         return NETDEV_TX_OK;
2630 }
2631 
2632 static const struct net_device_ops velocity_netdev_ops = {
2633         .ndo_open               = velocity_open,
2634         .ndo_stop               = velocity_close,
2635         .ndo_start_xmit         = velocity_xmit,
2636         .ndo_get_stats          = velocity_get_stats,
2637         .ndo_validate_addr      = eth_validate_addr,
2638         .ndo_set_mac_address    = eth_mac_addr,
2639         .ndo_set_rx_mode        = velocity_set_multi,
2640         .ndo_change_mtu         = velocity_change_mtu,
2641         .ndo_do_ioctl           = velocity_ioctl,
2642         .ndo_vlan_rx_add_vid    = velocity_vlan_rx_add_vid,
2643         .ndo_vlan_rx_kill_vid   = velocity_vlan_rx_kill_vid,
2644 #ifdef CONFIG_NET_POLL_CONTROLLER
2645         .ndo_poll_controller = velocity_poll_controller,
2646 #endif
2647 };
2648 
2649 /**
2650  *      velocity_init_info      -       init private data
2651  *      @pdev: PCI device
2652  *      @vptr: Velocity info
2653  *      @info: Board type
2654  *
2655  *      Set up the initial velocity_info struct for the device that has been
2656  *      discovered.
2657  */
2658 static void velocity_init_info(struct velocity_info *vptr,
2659                                 const struct velocity_info_tbl *info)
2660 {
2661         vptr->chip_id = info->chip_id;
2662         vptr->tx.numq = info->txqueue;
2663         vptr->multicast_limit = MCAM_SIZE;
2664         spin_lock_init(&vptr->lock);
2665 }
2666 
2667 /**
2668  *      velocity_get_pci_info   -       retrieve PCI info for device
2669  *      @vptr: velocity device
2670  *      @pdev: PCI device it matches
2671  *
2672  *      Retrieve the PCI configuration space data that interests us from
2673  *      the kernel PCI layer
2674  */
2675 static int velocity_get_pci_info(struct velocity_info *vptr)
2676 {
2677         struct pci_dev *pdev = vptr->pdev;
2678 
2679         pci_set_master(pdev);
2680 
2681         vptr->ioaddr = pci_resource_start(pdev, 0);
2682         vptr->memaddr = pci_resource_start(pdev, 1);
2683 
2684         if (!(pci_resource_flags(pdev, 0) & IORESOURCE_IO)) {
2685                 dev_err(&pdev->dev,
2686                            "region #0 is not an I/O resource, aborting.\n");
2687                 return -EINVAL;
2688         }
2689 
2690         if ((pci_resource_flags(pdev, 1) & IORESOURCE_IO)) {
2691                 dev_err(&pdev->dev,
2692                            "region #1 is an I/O resource, aborting.\n");
2693                 return -EINVAL;
2694         }
2695 
2696         if (pci_resource_len(pdev, 1) < VELOCITY_IO_SIZE) {
2697                 dev_err(&pdev->dev, "region #1 is too small.\n");
2698                 return -EINVAL;
2699         }
2700 
2701         return 0;
2702 }
2703 
2704 /**
2705  *      velocity_get_platform_info - retrieve platform info for device
2706  *      @vptr: velocity device
2707  *      @pdev: platform device it matches
2708  *
2709  *      Retrieve the Platform configuration data that interests us
2710  */
2711 static int velocity_get_platform_info(struct velocity_info *vptr)
2712 {
2713         struct resource res;
2714         int ret;
2715 
2716         if (of_get_property(vptr->dev->of_node, "no-eeprom", NULL))
2717                 vptr->no_eeprom = 1;
2718 
2719         ret = of_address_to_resource(vptr->dev->of_node, 0, &res);
2720         if (ret) {
2721                 dev_err(vptr->dev, "unable to find memory address\n");
2722                 return ret;
2723         }
2724 
2725         vptr->memaddr = res.start;
2726 
2727         if (resource_size(&res) < VELOCITY_IO_SIZE) {
2728                 dev_err(vptr->dev, "memory region is too small.\n");
2729                 return -EINVAL;
2730         }
2731 
2732         return 0;
2733 }
2734 
2735 /**
2736  *      velocity_print_info     -       per driver data
2737  *      @vptr: velocity
2738  *
2739  *      Print per driver data as the kernel driver finds Velocity
2740  *      hardware
2741  */
2742 static void velocity_print_info(struct velocity_info *vptr)
2743 {
2744         struct net_device *dev = vptr->netdev;
2745 
2746         printk(KERN_INFO "%s: %s\n", dev->name, get_chip_name(vptr->chip_id));
2747         printk(KERN_INFO "%s: Ethernet Address: %pM\n",
2748                 dev->name, dev->dev_addr);
2749 }
2750 
2751 static u32 velocity_get_link(struct net_device *dev)
2752 {
2753         struct velocity_info *vptr = netdev_priv(dev);
2754         struct mac_regs __iomem *regs = vptr->mac_regs;
2755         return BYTE_REG_BITS_IS_ON(PHYSR0_LINKGD, &regs->PHYSR0) ? 1 : 0;
2756 }
2757 
2758 /**
2759  *      velocity_probe - set up discovered velocity device
2760  *      @pdev: PCI device
2761  *      @ent: PCI device table entry that matched
2762  *      @bustype: bus that device is connected to
2763  *
2764  *      Configure a discovered adapter from scratch. Return a negative
2765  *      errno error code on failure paths.
2766  */
2767 static int velocity_probe(struct device *dev, int irq,
2768                            const struct velocity_info_tbl *info,
2769                            enum velocity_bus_type bustype)
2770 {
2771         static int first = 1;
2772         struct net_device *netdev;
2773         int i;
2774         const char *drv_string;
2775         struct velocity_info *vptr;
2776         struct mac_regs __iomem *regs;
2777         int ret = -ENOMEM;
2778 
2779         /* FIXME: this driver, like almost all other ethernet drivers,
2780          * can support more than MAX_UNITS.
2781          */
2782         if (velocity_nics >= MAX_UNITS) {
2783                 dev_notice(dev, "already found %d NICs.\n", velocity_nics);
2784                 return -ENODEV;
2785         }
2786 
2787         netdev = alloc_etherdev(sizeof(struct velocity_info));
2788         if (!netdev)
2789                 goto out;
2790 
2791         /* Chain it all together */
2792 
2793         SET_NETDEV_DEV(netdev, dev);
2794         vptr = netdev_priv(netdev);
2795 
2796         if (first) {
2797                 printk(KERN_INFO "%s Ver. %s\n",
2798                         VELOCITY_FULL_DRV_NAM, VELOCITY_VERSION);
2799                 printk(KERN_INFO "Copyright (c) 2002, 2003 VIA Networking Technologies, Inc.\n");
2800                 printk(KERN_INFO "Copyright (c) 2004 Red Hat Inc.\n");
2801                 first = 0;
2802         }
2803 
2804         netdev->irq = irq;
2805         vptr->netdev = netdev;
2806         vptr->dev = dev;
2807 
2808         velocity_init_info(vptr, info);
2809 
2810         if (bustype == BUS_PCI) {
2811                 vptr->pdev = to_pci_dev(dev);
2812 
2813                 ret = velocity_get_pci_info(vptr);
2814                 if (ret < 0)
2815                         goto err_free_dev;
2816         } else {
2817                 vptr->pdev = NULL;
2818                 ret = velocity_get_platform_info(vptr);
2819                 if (ret < 0)
2820                         goto err_free_dev;
2821         }
2822 
2823         regs = ioremap(vptr->memaddr, VELOCITY_IO_SIZE);
2824         if (regs == NULL) {
2825                 ret = -EIO;
2826                 goto err_free_dev;
2827         }
2828 
2829         vptr->mac_regs = regs;
2830         vptr->rev_id = readb(&regs->rev_id);
2831 
2832         mac_wol_reset(regs);
2833 
2834         for (i = 0; i < 6; i++)
2835                 netdev->dev_addr[i] = readb(&regs->PAR[i]);
2836 
2837 
2838         drv_string = dev_driver_string(dev);
2839 
2840         velocity_get_options(&vptr->options, velocity_nics, drv_string);
2841 
2842         /*
2843          *      Mask out the options cannot be set to the chip
2844          */
2845 
2846         vptr->options.flags &= info->flags;
2847 
2848         /*
2849          *      Enable the chip specified capbilities
2850          */
2851 
2852         vptr->flags = vptr->options.flags | (info->flags & 0xFF000000UL);
2853 
2854         vptr->wol_opts = vptr->options.wol_opts;
2855         vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
2856 
2857         vptr->phy_id = MII_GET_PHY_ID(vptr->mac_regs);
2858 
2859         netdev->netdev_ops = &velocity_netdev_ops;
2860         netdev->ethtool_ops = &velocity_ethtool_ops;
2861         netif_napi_add(netdev, &vptr->napi, velocity_poll,
2862                                                         VELOCITY_NAPI_WEIGHT);
2863 
2864         netdev->hw_features = NETIF_F_IP_CSUM | NETIF_F_SG |
2865                            NETIF_F_HW_VLAN_CTAG_TX;
2866         netdev->features |= NETIF_F_HW_VLAN_CTAG_TX |
2867                         NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_VLAN_CTAG_RX |
2868                         NETIF_F_IP_CSUM;
2869 
2870         ret = register_netdev(netdev);
2871         if (ret < 0)
2872                 goto err_iounmap;
2873 
2874         if (!velocity_get_link(netdev)) {
2875                 netif_carrier_off(netdev);
2876                 vptr->mii_status |= VELOCITY_LINK_FAIL;
2877         }
2878 
2879         velocity_print_info(vptr);
2880         dev_set_drvdata(vptr->dev, netdev);
2881 
2882         /* and leave the chip powered down */
2883 
2884         velocity_set_power_state(vptr, PCI_D3hot);
2885         velocity_nics++;
2886 out:
2887         return ret;
2888 
2889 err_iounmap:
2890         netif_napi_del(&vptr->napi);
2891         iounmap(regs);
2892 err_free_dev:
2893         free_netdev(netdev);
2894         goto out;
2895 }
2896 
2897 /**
2898  *      velocity_remove - device unplug
2899  *      @dev: device being removed
2900  *
2901  *      Device unload callback. Called on an unplug or on module
2902  *      unload for each active device that is present. Disconnects
2903  *      the device from the network layer and frees all the resources
2904  */
2905 static int velocity_remove(struct device *dev)
2906 {
2907         struct net_device *netdev = dev_get_drvdata(dev);
2908         struct velocity_info *vptr = netdev_priv(netdev);
2909 
2910         unregister_netdev(netdev);
2911         netif_napi_del(&vptr->napi);
2912         iounmap(vptr->mac_regs);
2913         free_netdev(netdev);
2914         velocity_nics--;
2915 
2916         return 0;
2917 }
2918 
2919 static int velocity_pci_probe(struct pci_dev *pdev,
2920                                const struct pci_device_id *ent)
2921 {
2922         const struct velocity_info_tbl *info =
2923                                         &chip_info_table[ent->driver_data];
2924         int ret;
2925 
2926         ret = pci_enable_device(pdev);
2927         if (ret < 0)
2928                 return ret;
2929 
2930         ret = pci_request_regions(pdev, VELOCITY_NAME);
2931         if (ret < 0) {
2932                 dev_err(&pdev->dev, "No PCI resources.\n");
2933                 goto fail1;
2934         }
2935 
2936         ret = velocity_probe(&pdev->dev, pdev->irq, info, BUS_PCI);
2937         if (ret == 0)
2938                 return 0;
2939 
2940         pci_release_regions(pdev);
2941 fail1:
2942         pci_disable_device(pdev);
2943         return ret;
2944 }
2945 
2946 static void velocity_pci_remove(struct pci_dev *pdev)
2947 {
2948         velocity_remove(&pdev->dev);
2949 
2950         pci_release_regions(pdev);
2951         pci_disable_device(pdev);
2952 }
2953 
2954 static int velocity_platform_probe(struct platform_device *pdev)
2955 {
2956         const struct of_device_id *of_id;
2957         const struct velocity_info_tbl *info;
2958         int irq;
2959 
2960         of_id = of_match_device(velocity_of_ids, &pdev->dev);
2961         if (!of_id)
2962                 return -EINVAL;
2963         info = of_id->data;
2964 
2965         irq = irq_of_parse_and_map(pdev->dev.of_node, 0);
2966         if (!irq)
2967                 return -EINVAL;
2968 
2969         return velocity_probe(&pdev->dev, irq, info, BUS_PLATFORM);
2970 }
2971 
2972 static int velocity_platform_remove(struct platform_device *pdev)
2973 {
2974         velocity_remove(&pdev->dev);
2975 
2976         return 0;
2977 }
2978 
2979 #ifdef CONFIG_PM_SLEEP
2980 /**
2981  *      wol_calc_crc            -       WOL CRC
2982  *      @pattern: data pattern
2983  *      @mask_pattern: mask
2984  *
2985  *      Compute the wake on lan crc hashes for the packet header
2986  *      we are interested in.
2987  */
2988 static u16 wol_calc_crc(int size, u8 *pattern, u8 *mask_pattern)
2989 {
2990         u16 crc = 0xFFFF;
2991         u8 mask;
2992         int i, j;
2993 
2994         for (i = 0; i < size; i++) {
2995                 mask = mask_pattern[i];
2996 
2997                 /* Skip this loop if the mask equals to zero */
2998                 if (mask == 0x00)
2999                         continue;
3000 
3001                 for (j = 0; j < 8; j++) {
3002                         if ((mask & 0x01) == 0) {
3003                                 mask >>= 1;
3004                                 continue;
3005                         }
3006                         mask >>= 1;
3007                         crc = crc_ccitt(crc, &(pattern[i * 8 + j]), 1);
3008                 }
3009         }
3010         /*      Finally, invert the result once to get the correct data */
3011         crc = ~crc;
3012         return bitrev32(crc) >> 16;
3013 }
3014 
3015 /**
3016  *      velocity_set_wol        -       set up for wake on lan
3017  *      @vptr: velocity to set WOL status on
3018  *
3019  *      Set a card up for wake on lan either by unicast or by
3020  *      ARP packet.
3021  *
3022  *      FIXME: check static buffer is safe here
3023  */
3024 static int velocity_set_wol(struct velocity_info *vptr)
3025 {
3026         struct mac_regs __iomem *regs = vptr->mac_regs;
3027         enum speed_opt spd_dpx = vptr->options.spd_dpx;
3028         static u8 buf[256];
3029         int i;
3030 
3031         static u32 mask_pattern[2][4] = {
3032                 {0x00203000, 0x000003C0, 0x00000000, 0x0000000}, /* ARP */
3033                 {0xfffff000, 0xffffffff, 0xffffffff, 0x000ffff}  /* Magic Packet */
3034         };
3035 
3036         writew(0xFFFF, &regs->WOLCRClr);
3037         writeb(WOLCFG_SAB | WOLCFG_SAM, &regs->WOLCFGSet);
3038         writew(WOLCR_MAGIC_EN, &regs->WOLCRSet);
3039 
3040         /*
3041            if (vptr->wol_opts & VELOCITY_WOL_PHY)
3042            writew((WOLCR_LINKON_EN|WOLCR_LINKOFF_EN), &regs->WOLCRSet);
3043          */
3044 
3045         if (vptr->wol_opts & VELOCITY_WOL_UCAST)
3046                 writew(WOLCR_UNICAST_EN, &regs->WOLCRSet);
3047 
3048         if (vptr->wol_opts & VELOCITY_WOL_ARP) {
3049                 struct arp_packet *arp = (struct arp_packet *) buf;
3050                 u16 crc;
3051                 memset(buf, 0, sizeof(struct arp_packet) + 7);
3052 
3053                 for (i = 0; i < 4; i++)
3054                         writel(mask_pattern[0][i], &regs->ByteMask[0][i]);
3055 
3056                 arp->type = htons(ETH_P_ARP);
3057                 arp->ar_op = htons(1);
3058 
3059                 memcpy(arp->ar_tip, vptr->ip_addr, 4);
3060 
3061                 crc = wol_calc_crc((sizeof(struct arp_packet) + 7) / 8, buf,
3062                                 (u8 *) & mask_pattern[0][0]);
3063 
3064                 writew(crc, &regs->PatternCRC[0]);
3065                 writew(WOLCR_ARP_EN, &regs->WOLCRSet);
3066         }
3067 
3068         BYTE_REG_BITS_ON(PWCFG_WOLTYPE, &regs->PWCFGSet);
3069         BYTE_REG_BITS_ON(PWCFG_LEGACY_WOLEN, &regs->PWCFGSet);
3070 
3071         writew(0x0FFF, &regs->WOLSRClr);
3072 
3073         if (spd_dpx == SPD_DPX_1000_FULL)
3074                 goto mac_done;
3075 
3076         if (spd_dpx != SPD_DPX_AUTO)
3077                 goto advertise_done;
3078 
3079         if (vptr->mii_status & VELOCITY_AUTONEG_ENABLE) {
3080                 if (PHYID_GET_PHY_ID(vptr->phy_id) == PHYID_CICADA_CS8201)
3081                         MII_REG_BITS_ON(AUXCR_MDPPS, MII_NCONFIG, vptr->mac_regs);
3082 
3083                 MII_REG_BITS_OFF(ADVERTISE_1000FULL | ADVERTISE_1000HALF, MII_CTRL1000, vptr->mac_regs);
3084         }
3085 
3086         if (vptr->mii_status & VELOCITY_SPEED_1000)
3087                 MII_REG_BITS_ON(BMCR_ANRESTART, MII_BMCR, vptr->mac_regs);
3088 
3089 advertise_done:
3090         BYTE_REG_BITS_ON(CHIPGCR_FCMODE, &regs->CHIPGCR);
3091 
3092         {
3093                 u8 GCR;
3094                 GCR = readb(&regs->CHIPGCR);
3095                 GCR = (GCR & ~CHIPGCR_FCGMII) | CHIPGCR_FCFDX;
3096                 writeb(GCR, &regs->CHIPGCR);
3097         }
3098 
3099 mac_done:
3100         BYTE_REG_BITS_OFF(ISR_PWEI, &regs->ISR);
3101         /* Turn on SWPTAG just before entering power mode */
3102         BYTE_REG_BITS_ON(STICKHW_SWPTAG, &regs->STICKHW);
3103         /* Go to bed ..... */
3104         BYTE_REG_BITS_ON((STICKHW_DS1 | STICKHW_DS0), &regs->STICKHW);
3105 
3106         return 0;
3107 }
3108 
3109 /**
3110  *      velocity_save_context   -       save registers
3111  *      @vptr: velocity
3112  *      @context: buffer for stored context
3113  *
3114  *      Retrieve the current configuration from the velocity hardware
3115  *      and stash it in the context structure, for use by the context
3116  *      restore functions. This allows us to save things we need across
3117  *      power down states
3118  */
3119 static void velocity_save_context(struct velocity_info *vptr, struct velocity_context *context)
3120 {
3121         struct mac_regs __iomem *regs = vptr->mac_regs;
3122         u16 i;
3123         u8 __iomem *ptr = (u8 __iomem *)regs;
3124 
3125         for (i = MAC_REG_PAR; i < MAC_REG_CR0_CLR; i += 4)
3126                 *((u32 *) (context->mac_reg + i)) = readl(ptr + i);
3127 
3128         for (i = MAC_REG_MAR; i < MAC_REG_TDCSR_CLR; i += 4)
3129                 *((u32 *) (context->mac_reg + i)) = readl(ptr + i);
3130 
3131         for (i = MAC_REG_RDBASE_LO; i < MAC_REG_FIFO_TEST0; i += 4)
3132                 *((u32 *) (context->mac_reg + i)) = readl(ptr + i);
3133 
3134 }
3135 
3136 static int velocity_suspend(struct device *dev)
3137 {
3138         struct net_device *netdev = dev_get_drvdata(dev);
3139         struct velocity_info *vptr = netdev_priv(netdev);
3140         unsigned long flags;
3141 
3142         if (!netif_running(vptr->netdev))
3143                 return 0;
3144 
3145         netif_device_detach(vptr->netdev);
3146 
3147         spin_lock_irqsave(&vptr->lock, flags);
3148         if (vptr->pdev)
3149                 pci_save_state(vptr->pdev);
3150 
3151         if (vptr->flags & VELOCITY_FLAGS_WOL_ENABLED) {
3152                 velocity_get_ip(vptr);
3153                 velocity_save_context(vptr, &vptr->context);
3154                 velocity_shutdown(vptr);
3155                 velocity_set_wol(vptr);
3156                 if (vptr->pdev)
3157                         pci_enable_wake(vptr->pdev, PCI_D3hot, 1);
3158                 velocity_set_power_state(vptr, PCI_D3hot);
3159         } else {
3160                 velocity_save_context(vptr, &vptr->context);
3161                 velocity_shutdown(vptr);
3162                 if (vptr->pdev)
3163                         pci_disable_device(vptr->pdev);
3164                 velocity_set_power_state(vptr, PCI_D3hot);
3165         }
3166 
3167         spin_unlock_irqrestore(&vptr->lock, flags);
3168         return 0;
3169 }
3170 
3171 /**
3172  *      velocity_restore_context        -       restore registers
3173  *      @vptr: velocity
3174  *      @context: buffer for stored context
3175  *
3176  *      Reload the register configuration from the velocity context
3177  *      created by velocity_save_context.
3178  */
3179 static void velocity_restore_context(struct velocity_info *vptr, struct velocity_context *context)
3180 {
3181         struct mac_regs __iomem *regs = vptr->mac_regs;
3182         int i;
3183         u8 __iomem *ptr = (u8 __iomem *)regs;
3184 
3185         for (i = MAC_REG_PAR; i < MAC_REG_CR0_SET; i += 4)
3186                 writel(*((u32 *) (context->mac_reg + i)), ptr + i);
3187 
3188         /* Just skip cr0 */
3189         for (i = MAC_REG_CR1_SET; i < MAC_REG_CR0_CLR; i++) {
3190                 /* Clear */
3191                 writeb(~(*((u8 *) (context->mac_reg + i))), ptr + i + 4);
3192                 /* Set */
3193                 writeb(*((u8 *) (context->mac_reg + i)), ptr + i);
3194         }
3195 
3196         for (i = MAC_REG_MAR; i < MAC_REG_IMR; i += 4)
3197                 writel(*((u32 *) (context->mac_reg + i)), ptr + i);
3198 
3199         for (i = MAC_REG_RDBASE_LO; i < MAC_REG_FIFO_TEST0; i += 4)
3200                 writel(*((u32 *) (context->mac_reg + i)), ptr + i);
3201 
3202         for (i = MAC_REG_TDCSR_SET; i <= MAC_REG_RDCSR_SET; i++)
3203                 writeb(*((u8 *) (context->mac_reg + i)), ptr + i);
3204 }
3205 
3206 static int velocity_resume(struct device *dev)
3207 {
3208         struct net_device *netdev = dev_get_drvdata(dev);
3209         struct velocity_info *vptr = netdev_priv(netdev);
3210         unsigned long flags;
3211         int i;
3212 
3213         if (!netif_running(vptr->netdev))
3214                 return 0;
3215 
3216         velocity_set_power_state(vptr, PCI_D0);
3217 
3218         if (vptr->pdev) {
3219                 pci_enable_wake(vptr->pdev, PCI_D0, 0);
3220                 pci_restore_state(vptr->pdev);
3221         }
3222 
3223         mac_wol_reset(vptr->mac_regs);
3224 
3225         spin_lock_irqsave(&vptr->lock, flags);
3226         velocity_restore_context(vptr, &vptr->context);
3227         velocity_init_registers(vptr, VELOCITY_INIT_WOL);
3228         mac_disable_int(vptr->mac_regs);
3229 
3230         velocity_tx_srv(vptr);
3231 
3232         for (i = 0; i < vptr->tx.numq; i++) {
3233                 if (vptr->tx.used[i])
3234                         mac_tx_queue_wake(vptr->mac_regs, i);
3235         }
3236 
3237         mac_enable_int(vptr->mac_regs);
3238         spin_unlock_irqrestore(&vptr->lock, flags);
3239         netif_device_attach(vptr->netdev);
3240 
3241         return 0;
3242 }
3243 #endif  /* CONFIG_PM_SLEEP */
3244 
3245 static SIMPLE_DEV_PM_OPS(velocity_pm_ops, velocity_suspend, velocity_resume);
3246 
3247 /*
3248  *      Definition for our device driver. The PCI layer interface
3249  *      uses this to handle all our card discover and plugging
3250  */
3251 static struct pci_driver velocity_pci_driver = {
3252         .name           = VELOCITY_NAME,
3253         .id_table       = velocity_pci_id_table,
3254         .probe          = velocity_pci_probe,
3255         .remove         = velocity_pci_remove,
3256         .driver = {
3257                 .pm = &velocity_pm_ops,
3258         },
3259 };
3260 
3261 static struct platform_driver velocity_platform_driver = {
3262         .probe          = velocity_platform_probe,
3263         .remove         = velocity_platform_remove,
3264         .driver = {
3265                 .name = "via-velocity",
3266                 .of_match_table = velocity_of_ids,
3267                 .pm = &velocity_pm_ops,
3268         },
3269 };
3270 
3271 /**
3272  *      velocity_ethtool_up     -       pre hook for ethtool
3273  *      @dev: network device
3274  *
3275  *      Called before an ethtool operation. We need to make sure the
3276  *      chip is out of D3 state before we poke at it.
3277  */
3278 static int velocity_ethtool_up(struct net_device *dev)
3279 {
3280         struct velocity_info *vptr = netdev_priv(dev);
3281         if (!netif_running(dev))
3282                 velocity_set_power_state(vptr, PCI_D0);
3283         return 0;
3284 }
3285 
3286 /**
3287  *      velocity_ethtool_down   -       post hook for ethtool
3288  *      @dev: network device
3289  *
3290  *      Called after an ethtool operation. Restore the chip back to D3
3291  *      state if it isn't running.
3292  */
3293 static void velocity_ethtool_down(struct net_device *dev)
3294 {
3295         struct velocity_info *vptr = netdev_priv(dev);
3296         if (!netif_running(dev))
3297                 velocity_set_power_state(vptr, PCI_D3hot);
3298 }
3299 
3300 static int velocity_get_settings(struct net_device *dev,
3301                                  struct ethtool_cmd *cmd)
3302 {
3303         struct velocity_info *vptr = netdev_priv(dev);
3304         struct mac_regs __iomem *regs = vptr->mac_regs;
3305         u32 status;
3306         status = check_connection_type(vptr->mac_regs);
3307 
3308         cmd->supported = SUPPORTED_TP |
3309                         SUPPORTED_Autoneg |
3310                         SUPPORTED_10baseT_Half |
3311                         SUPPORTED_10baseT_Full |
3312                         SUPPORTED_100baseT_Half |
3313                         SUPPORTED_100baseT_Full |
3314                         SUPPORTED_1000baseT_Half |
3315                         SUPPORTED_1000baseT_Full;
3316 
3317         cmd->advertising = ADVERTISED_TP | ADVERTISED_Autoneg;
3318         if (vptr->options.spd_dpx == SPD_DPX_AUTO) {
3319                 cmd->advertising |=
3320                         ADVERTISED_10baseT_Half |
3321                         ADVERTISED_10baseT_Full |
3322                         ADVERTISED_100baseT_Half |
3323                         ADVERTISED_100baseT_Full |
3324                         ADVERTISED_1000baseT_Half |
3325                         ADVERTISED_1000baseT_Full;
3326         } else {
3327                 switch (vptr->options.spd_dpx) {
3328                 case SPD_DPX_1000_FULL:
3329                         cmd->advertising |= ADVERTISED_1000baseT_Full;
3330                         break;
3331                 case SPD_DPX_100_HALF:
3332                         cmd->advertising |= ADVERTISED_100baseT_Half;
3333                         break;
3334                 case SPD_DPX_100_FULL:
3335                         cmd->advertising |= ADVERTISED_100baseT_Full;
3336                         break;
3337                 case SPD_DPX_10_HALF:
3338                         cmd->advertising |= ADVERTISED_10baseT_Half;
3339                         break;
3340                 case SPD_DPX_10_FULL:
3341                         cmd->advertising |= ADVERTISED_10baseT_Full;
3342                         break;
3343                 default:
3344                         break;
3345                 }
3346         }
3347 
3348         if (status & VELOCITY_SPEED_1000)
3349                 ethtool_cmd_speed_set(cmd, SPEED_1000);
3350         else if (status & VELOCITY_SPEED_100)
3351                 ethtool_cmd_speed_set(cmd, SPEED_100);
3352         else
3353                 ethtool_cmd_speed_set(cmd, SPEED_10);
3354 
3355         cmd->autoneg = (status & VELOCITY_AUTONEG_ENABLE) ? AUTONEG_ENABLE : AUTONEG_DISABLE;
3356         cmd->port = PORT_TP;
3357         cmd->transceiver = XCVR_INTERNAL;
3358         cmd->phy_address = readb(&regs->MIIADR) & 0x1F;
3359 
3360         if (status & VELOCITY_DUPLEX_FULL)
3361                 cmd->duplex = DUPLEX_FULL;
3362         else
3363                 cmd->duplex = DUPLEX_HALF;
3364 
3365         return 0;
3366 }
3367 
3368 static int velocity_set_settings(struct net_device *dev,
3369                                  struct ethtool_cmd *cmd)
3370 {
3371         struct velocity_info *vptr = netdev_priv(dev);
3372         u32 speed = ethtool_cmd_speed(cmd);
3373         u32 curr_status;
3374         u32 new_status = 0;
3375         int ret = 0;
3376 
3377         curr_status = check_connection_type(vptr->mac_regs);
3378         curr_status &= (~VELOCITY_LINK_FAIL);
3379 
3380         new_status |= ((cmd->autoneg) ? VELOCITY_AUTONEG_ENABLE : 0);
3381         new_status |= ((speed == SPEED_1000) ? VELOCITY_SPEED_1000 : 0);
3382         new_status |= ((speed == SPEED_100) ? VELOCITY_SPEED_100 : 0);
3383         new_status |= ((speed == SPEED_10) ? VELOCITY_SPEED_10 : 0);
3384         new_status |= ((cmd->duplex == DUPLEX_FULL) ? VELOCITY_DUPLEX_FULL : 0);
3385 
3386         if ((new_status & VELOCITY_AUTONEG_ENABLE) &&
3387             (new_status != (curr_status | VELOCITY_AUTONEG_ENABLE))) {
3388                 ret = -EINVAL;
3389         } else {
3390                 enum speed_opt spd_dpx;
3391 
3392                 if (new_status & VELOCITY_AUTONEG_ENABLE)
3393                         spd_dpx = SPD_DPX_AUTO;
3394                 else if ((new_status & VELOCITY_SPEED_1000) &&
3395                          (new_status & VELOCITY_DUPLEX_FULL)) {
3396                         spd_dpx = SPD_DPX_1000_FULL;
3397                 } else if (new_status & VELOCITY_SPEED_100)
3398                         spd_dpx = (new_status & VELOCITY_DUPLEX_FULL) ?
3399                                 SPD_DPX_100_FULL : SPD_DPX_100_HALF;
3400                 else if (new_status & VELOCITY_SPEED_10)
3401                         spd_dpx = (new_status & VELOCITY_DUPLEX_FULL) ?
3402                                 SPD_DPX_10_FULL : SPD_DPX_10_HALF;
3403                 else
3404                         return -EOPNOTSUPP;
3405 
3406                 vptr->options.spd_dpx = spd_dpx;
3407 
3408                 velocity_set_media_mode(vptr, new_status);
3409         }
3410 
3411         return ret;
3412 }
3413 
3414 static void velocity_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
3415 {
3416         struct velocity_info *vptr = netdev_priv(dev);
3417 
3418         strlcpy(info->driver, VELOCITY_NAME, sizeof(info->driver));
3419         strlcpy(info->version, VELOCITY_VERSION, sizeof(info->version));
3420         if (vptr->pdev)
3421                 strlcpy(info->bus_info, pci_name(vptr->pdev),
3422                                                 sizeof(info->bus_info));
3423         else
3424                 strlcpy(info->bus_info, "platform", sizeof(info->bus_info));
3425 }
3426 
3427 static void velocity_ethtool_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
3428 {
3429         struct velocity_info *vptr = netdev_priv(dev);
3430         wol->supported = WAKE_PHY | WAKE_MAGIC | WAKE_UCAST | WAKE_ARP;
3431         wol->wolopts |= WAKE_MAGIC;
3432         /*
3433            if (vptr->wol_opts & VELOCITY_WOL_PHY)
3434                    wol.wolopts|=WAKE_PHY;
3435                          */
3436         if (vptr->wol_opts & VELOCITY_WOL_UCAST)
3437                 wol->wolopts |= WAKE_UCAST;
3438         if (vptr->wol_opts & VELOCITY_WOL_ARP)
3439                 wol->wolopts |= WAKE_ARP;
3440         memcpy(&wol->sopass, vptr->wol_passwd, 6);
3441 }
3442 
3443 static int velocity_ethtool_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
3444 {
3445         struct velocity_info *vptr = netdev_priv(dev);
3446 
3447         if (!(wol->wolopts & (WAKE_PHY | WAKE_MAGIC | WAKE_UCAST | WAKE_ARP)))
3448                 return -EFAULT;
3449         vptr->wol_opts = VELOCITY_WOL_MAGIC;
3450 
3451         /*
3452            if (wol.wolopts & WAKE_PHY) {
3453            vptr->wol_opts|=VELOCITY_WOL_PHY;
3454            vptr->flags |=VELOCITY_FLAGS_WOL_ENABLED;
3455            }
3456          */
3457 
3458         if (wol->wolopts & WAKE_MAGIC) {
3459                 vptr->wol_opts |= VELOCITY_WOL_MAGIC;
3460                 vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
3461         }
3462         if (wol->wolopts & WAKE_UCAST) {
3463                 vptr->wol_opts |= VELOCITY_WOL_UCAST;
3464                 vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
3465         }
3466         if (wol->wolopts & WAKE_ARP) {
3467                 vptr->wol_opts |= VELOCITY_WOL_ARP;
3468                 vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
3469         }
3470         memcpy(vptr->wol_passwd, wol->sopass, 6);
3471         return 0;
3472 }
3473 
3474 static u32 velocity_get_msglevel(struct net_device *dev)
3475 {
3476         return msglevel;
3477 }
3478 
3479 static void velocity_set_msglevel(struct net_device *dev, u32 value)
3480 {
3481          msglevel = value;
3482 }
3483 
3484 static int get_pending_timer_val(int val)
3485 {
3486         int mult_bits = val >> 6;
3487         int mult = 1;
3488 
3489         switch (mult_bits)
3490         {
3491         case 1:
3492                 mult = 4; break;
3493         case 2:
3494                 mult = 16; break;
3495         case 3:
3496                 mult = 64; break;
3497         case 0:
3498         default:
3499                 break;
3500         }
3501 
3502         return (val & 0x3f) * mult;
3503 }
3504 
3505 static void set_pending_timer_val(int *val, u32 us)
3506 {
3507         u8 mult = 0;
3508         u8 shift = 0;
3509 
3510         if (us >= 0x3f) {
3511                 mult = 1; /* mult with 4 */
3512                 shift = 2;
3513         }
3514         if (us >= 0x3f * 4) {
3515                 mult = 2; /* mult with 16 */
3516                 shift = 4;
3517         }
3518         if (us >= 0x3f * 16) {
3519                 mult = 3; /* mult with 64 */
3520                 shift = 6;
3521         }
3522 
3523         *val = (mult << 6) | ((us >> shift) & 0x3f);
3524 }
3525 
3526 
3527 static int velocity_get_coalesce(struct net_device *dev,
3528                 struct ethtool_coalesce *ecmd)
3529 {
3530         struct velocity_info *vptr = netdev_priv(dev);
3531 
3532         ecmd->tx_max_coalesced_frames = vptr->options.tx_intsup;
3533         ecmd->rx_max_coalesced_frames = vptr->options.rx_intsup;
3534 
3535         ecmd->rx_coalesce_usecs = get_pending_timer_val(vptr->options.rxqueue_timer);
3536         ecmd->tx_coalesce_usecs = get_pending_timer_val(vptr->options.txqueue_timer);
3537 
3538         return 0;
3539 }
3540 
3541 static int velocity_set_coalesce(struct net_device *dev,
3542                 struct ethtool_coalesce *ecmd)
3543 {
3544         struct velocity_info *vptr = netdev_priv(dev);
3545         int max_us = 0x3f * 64;
3546         unsigned long flags;
3547 
3548         /* 6 bits of  */
3549         if (ecmd->tx_coalesce_usecs > max_us)
3550                 return -EINVAL;
3551         if (ecmd->rx_coalesce_usecs > max_us)
3552                 return -EINVAL;
3553 
3554         if (ecmd->tx_max_coalesced_frames > 0xff)
3555                 return -EINVAL;
3556         if (ecmd->rx_max_coalesced_frames > 0xff)
3557                 return -EINVAL;
3558 
3559         vptr->options.rx_intsup = ecmd->rx_max_coalesced_frames;
3560         vptr->options.tx_intsup = ecmd->tx_max_coalesced_frames;
3561 
3562         set_pending_timer_val(&vptr->options.rxqueue_timer,
3563                         ecmd->rx_coalesce_usecs);
3564         set_pending_timer_val(&vptr->options.txqueue_timer,
3565                         ecmd->tx_coalesce_usecs);
3566 
3567         /* Setup the interrupt suppression and queue timers */
3568         spin_lock_irqsave(&vptr->lock, flags);
3569         mac_disable_int(vptr->mac_regs);
3570         setup_adaptive_interrupts(vptr);
3571         setup_queue_timers(vptr);
3572 
3573         mac_write_int_mask(vptr->int_mask, vptr->mac_regs);
3574         mac_clear_isr(vptr->mac_regs);
3575         mac_enable_int(vptr->mac_regs);
3576         spin_unlock_irqrestore(&vptr->lock, flags);
3577 
3578         return 0;
3579 }
3580 
3581 static const char velocity_gstrings[][ETH_GSTRING_LEN] = {
3582         "rx_all",
3583         "rx_ok",
3584         "tx_ok",
3585         "rx_error",
3586         "rx_runt_ok",
3587         "rx_runt_err",
3588         "rx_64",
3589         "tx_64",
3590         "rx_65_to_127",
3591         "tx_65_to_127",
3592         "rx_128_to_255",
3593         "tx_128_to_255",
3594         "rx_256_to_511",
3595         "tx_256_to_511",
3596         "rx_512_to_1023",
3597         "tx_512_to_1023",
3598         "rx_1024_to_1518",
3599         "tx_1024_to_1518",
3600         "tx_ether_collisions",
3601         "rx_crc_errors",
3602         "rx_jumbo",
3603         "tx_jumbo",
3604         "rx_mac_control_frames",
3605         "tx_mac_control_frames",
3606         "rx_frame_alignement_errors",
3607         "rx_long_ok",
3608         "rx_long_err",
3609         "tx_sqe_errors",
3610         "rx_no_buf",
3611         "rx_symbol_errors",
3612         "in_range_length_errors",
3613         "late_collisions"
3614 };
3615 
3616 static void velocity_get_strings(struct net_device *dev, u32 sset, u8 *data)
3617 {
3618         switch (sset) {
3619         case ETH_SS_STATS:
3620                 memcpy(data, *velocity_gstrings, sizeof(velocity_gstrings));
3621                 break;
3622         }
3623 }
3624 
3625 static int velocity_get_sset_count(struct net_device *dev, int sset)
3626 {
3627         switch (sset) {
3628         case ETH_SS_STATS:
3629                 return ARRAY_SIZE(velocity_gstrings);
3630         default:
3631                 return -EOPNOTSUPP;
3632         }
3633 }
3634 
3635 static void velocity_get_ethtool_stats(struct net_device *dev,
3636                                        struct ethtool_stats *stats, u64 *data)
3637 {
3638         if (netif_running(dev)) {
3639                 struct velocity_info *vptr = netdev_priv(dev);
3640                 u32 *p = vptr->mib_counter;
3641                 int i;
3642 
3643                 spin_lock_irq(&vptr->lock);
3644                 velocity_update_hw_mibs(vptr);
3645                 spin_unlock_irq(&vptr->lock);
3646 
3647                 for (i = 0; i < ARRAY_SIZE(velocity_gstrings); i++)
3648                         *data++ = *p++;
3649         }
3650 }
3651 
3652 static const struct ethtool_ops velocity_ethtool_ops = {
3653         .get_settings           = velocity_get_settings,
3654         .set_settings           = velocity_set_settings,
3655         .get_drvinfo            = velocity_get_drvinfo,
3656         .get_wol                = velocity_ethtool_get_wol,
3657         .set_wol                = velocity_ethtool_set_wol,
3658         .get_msglevel           = velocity_get_msglevel,
3659         .set_msglevel           = velocity_set_msglevel,
3660         .get_link               = velocity_get_link,
3661         .get_strings            = velocity_get_strings,
3662         .get_sset_count         = velocity_get_sset_count,
3663         .get_ethtool_stats      = velocity_get_ethtool_stats,
3664         .get_coalesce           = velocity_get_coalesce,
3665         .set_coalesce           = velocity_set_coalesce,
3666         .begin                  = velocity_ethtool_up,
3667         .complete               = velocity_ethtool_down
3668 };
3669 
3670 #if defined(CONFIG_PM) && defined(CONFIG_INET)
3671 static int velocity_netdev_event(struct notifier_block *nb, unsigned long notification, void *ptr)
3672 {
3673         struct in_ifaddr *ifa = ptr;
3674         struct net_device *dev = ifa->ifa_dev->dev;
3675 
3676         if (dev_net(dev) == &init_net &&
3677             dev->netdev_ops == &velocity_netdev_ops)
3678                 velocity_get_ip(netdev_priv(dev));
3679 
3680         return NOTIFY_DONE;
3681 }
3682 
3683 static struct notifier_block velocity_inetaddr_notifier = {
3684         .notifier_call  = velocity_netdev_event,
3685 };
3686 
3687 static void velocity_register_notifier(void)
3688 {
3689         register_inetaddr_notifier(&velocity_inetaddr_notifier);
3690 }
3691 
3692 static void velocity_unregister_notifier(void)
3693 {
3694         unregister_inetaddr_notifier(&velocity_inetaddr_notifier);
3695 }
3696 
3697 #else
3698 
3699 #define velocity_register_notifier()    do {} while (0)
3700 #define velocity_unregister_notifier()  do {} while (0)
3701 
3702 #endif  /* defined(CONFIG_PM) && defined(CONFIG_INET) */
3703 
3704 /**
3705  *      velocity_init_module    -       load time function
3706  *
3707  *      Called when the velocity module is loaded. The PCI driver
3708  *      is registered with the PCI layer, and in turn will call
3709  *      the probe functions for each velocity adapter installed
3710  *      in the system.
3711  */
3712 static int __init velocity_init_module(void)
3713 {
3714         int ret_pci, ret_platform;
3715 
3716         velocity_register_notifier();
3717 
3718         ret_pci = pci_register_driver(&velocity_pci_driver);
3719         ret_platform = platform_driver_register(&velocity_platform_driver);
3720 
3721         /* if both_registers failed, remove the notifier */
3722         if ((ret_pci < 0) && (ret_platform < 0)) {
3723                 velocity_unregister_notifier();
3724                 return ret_pci;
3725         }
3726 
3727         return 0;
3728 }
3729 
3730 /**
3731  *      velocity_cleanup        -       module unload
3732  *
3733  *      When the velocity hardware is unloaded this function is called.
3734  *      It will clean up the notifiers and the unregister the PCI
3735  *      driver interface for this hardware. This in turn cleans up
3736  *      all discovered interfaces before returning from the function
3737  */
3738 static void __exit velocity_cleanup_module(void)
3739 {
3740         velocity_unregister_notifier();
3741 
3742         pci_unregister_driver(&velocity_pci_driver);
3743         platform_driver_unregister(&velocity_platform_driver);
3744 }
3745 
3746 module_init(velocity_init_module);
3747 module_exit(velocity_cleanup_module);
3748 

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