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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         int i;
1728 
1729         /*
1730          *      Don't unmap the pre-allocated tx_bufs
1731          */
1732         for (i = 0; i < tdinfo->nskb_dma; i++) {
1733                 size_t pktlen = max_t(size_t, skb->len, ETH_ZLEN);
1734 
1735                 /* For scatter-gather */
1736                 if (skb_shinfo(skb)->nr_frags > 0)
1737                         pktlen = max_t(size_t, pktlen,
1738                                        td->td_buf[i].size & ~TD_QUEUE);
1739 
1740                 dma_unmap_single(vptr->dev, tdinfo->skb_dma[i],
1741                                  le16_to_cpu(pktlen), DMA_TO_DEVICE);
1742         }
1743         dev_kfree_skb_irq(skb);
1744         tdinfo->skb = NULL;
1745 }
1746 
1747 /*
1748  *      FIXME: could we merge this with velocity_free_tx_buf ?
1749  */
1750 static void velocity_free_td_ring_entry(struct velocity_info *vptr,
1751                                                          int q, int n)
1752 {
1753         struct velocity_td_info *td_info = &(vptr->tx.infos[q][n]);
1754         int i;
1755 
1756         if (td_info == NULL)
1757                 return;
1758 
1759         if (td_info->skb) {
1760                 for (i = 0; i < td_info->nskb_dma; i++) {
1761                         if (td_info->skb_dma[i]) {
1762                                 dma_unmap_single(vptr->dev, td_info->skb_dma[i],
1763                                         td_info->skb->len, DMA_TO_DEVICE);
1764                                 td_info->skb_dma[i] = 0;
1765                         }
1766                 }
1767                 dev_kfree_skb(td_info->skb);
1768                 td_info->skb = NULL;
1769         }
1770 }
1771 
1772 /**
1773  *      velocity_free_td_ring   -       free td ring
1774  *      @vptr: velocity
1775  *
1776  *      Free up the transmit ring for this particular velocity adapter.
1777  *      We free the ring contents but not the ring itself.
1778  */
1779 static void velocity_free_td_ring(struct velocity_info *vptr)
1780 {
1781         int i, j;
1782 
1783         for (j = 0; j < vptr->tx.numq; j++) {
1784                 if (vptr->tx.infos[j] == NULL)
1785                         continue;
1786                 for (i = 0; i < vptr->options.numtx; i++)
1787                         velocity_free_td_ring_entry(vptr, j, i);
1788 
1789                 kfree(vptr->tx.infos[j]);
1790                 vptr->tx.infos[j] = NULL;
1791         }
1792 }
1793 
1794 static void velocity_free_rings(struct velocity_info *vptr)
1795 {
1796         velocity_free_td_ring(vptr);
1797         velocity_free_rd_ring(vptr);
1798         velocity_free_dma_rings(vptr);
1799 }
1800 
1801 /**
1802  *      velocity_error  -       handle error from controller
1803  *      @vptr: velocity
1804  *      @status: card status
1805  *
1806  *      Process an error report from the hardware and attempt to recover
1807  *      the card itself. At the moment we cannot recover from some
1808  *      theoretically impossible errors but this could be fixed using
1809  *      the pci_device_failed logic to bounce the hardware
1810  *
1811  */
1812 static void velocity_error(struct velocity_info *vptr, int status)
1813 {
1814 
1815         if (status & ISR_TXSTLI) {
1816                 struct mac_regs __iomem *regs = vptr->mac_regs;
1817 
1818                 printk(KERN_ERR "TD structure error TDindex=%hx\n", readw(&regs->TDIdx[0]));
1819                 BYTE_REG_BITS_ON(TXESR_TDSTR, &regs->TXESR);
1820                 writew(TRDCSR_RUN, &regs->TDCSRClr);
1821                 netif_stop_queue(vptr->netdev);
1822 
1823                 /* FIXME: port over the pci_device_failed code and use it
1824                    here */
1825         }
1826 
1827         if (status & ISR_SRCI) {
1828                 struct mac_regs __iomem *regs = vptr->mac_regs;
1829                 int linked;
1830 
1831                 if (vptr->options.spd_dpx == SPD_DPX_AUTO) {
1832                         vptr->mii_status = check_connection_type(regs);
1833 
1834                         /*
1835                          *      If it is a 3119, disable frame bursting in
1836                          *      halfduplex mode and enable it in fullduplex
1837                          *       mode
1838                          */
1839                         if (vptr->rev_id < REV_ID_VT3216_A0) {
1840                                 if (vptr->mii_status & VELOCITY_DUPLEX_FULL)
1841                                         BYTE_REG_BITS_ON(TCR_TB2BDIS, &regs->TCR);
1842                                 else
1843                                         BYTE_REG_BITS_OFF(TCR_TB2BDIS, &regs->TCR);
1844                         }
1845                         /*
1846                          *      Only enable CD heart beat counter in 10HD mode
1847                          */
1848                         if (!(vptr->mii_status & VELOCITY_DUPLEX_FULL) && (vptr->mii_status & VELOCITY_SPEED_10))
1849                                 BYTE_REG_BITS_OFF(TESTCFG_HBDIS, &regs->TESTCFG);
1850                         else
1851                                 BYTE_REG_BITS_ON(TESTCFG_HBDIS, &regs->TESTCFG);
1852 
1853                         setup_queue_timers(vptr);
1854                 }
1855                 /*
1856                  *      Get link status from PHYSR0
1857                  */
1858                 linked = readb(&regs->PHYSR0) & PHYSR0_LINKGD;
1859 
1860                 if (linked) {
1861                         vptr->mii_status &= ~VELOCITY_LINK_FAIL;
1862                         netif_carrier_on(vptr->netdev);
1863                 } else {
1864                         vptr->mii_status |= VELOCITY_LINK_FAIL;
1865                         netif_carrier_off(vptr->netdev);
1866                 }
1867 
1868                 velocity_print_link_status(vptr);
1869                 enable_flow_control_ability(vptr);
1870 
1871                 /*
1872                  *      Re-enable auto-polling because SRCI will disable
1873                  *      auto-polling
1874                  */
1875 
1876                 enable_mii_autopoll(regs);
1877 
1878                 if (vptr->mii_status & VELOCITY_LINK_FAIL)
1879                         netif_stop_queue(vptr->netdev);
1880                 else
1881                         netif_wake_queue(vptr->netdev);
1882 
1883         }
1884         if (status & ISR_MIBFI)
1885                 velocity_update_hw_mibs(vptr);
1886         if (status & ISR_LSTEI)
1887                 mac_rx_queue_wake(vptr->mac_regs);
1888 }
1889 
1890 /**
1891  *      tx_srv          -       transmit interrupt service
1892  *      @vptr; Velocity
1893  *
1894  *      Scan the queues looking for transmitted packets that
1895  *      we can complete and clean up. Update any statistics as
1896  *      necessary/
1897  */
1898 static int velocity_tx_srv(struct velocity_info *vptr)
1899 {
1900         struct tx_desc *td;
1901         int qnum;
1902         int full = 0;
1903         int idx;
1904         int works = 0;
1905         struct velocity_td_info *tdinfo;
1906         struct net_device_stats *stats = &vptr->netdev->stats;
1907 
1908         for (qnum = 0; qnum < vptr->tx.numq; qnum++) {
1909                 for (idx = vptr->tx.tail[qnum]; vptr->tx.used[qnum] > 0;
1910                         idx = (idx + 1) % vptr->options.numtx) {
1911 
1912                         /*
1913                          *      Get Tx Descriptor
1914                          */
1915                         td = &(vptr->tx.rings[qnum][idx]);
1916                         tdinfo = &(vptr->tx.infos[qnum][idx]);
1917 
1918                         if (td->tdesc0.len & OWNED_BY_NIC)
1919                                 break;
1920 
1921                         if ((works++ > 15))
1922                                 break;
1923 
1924                         if (td->tdesc0.TSR & TSR0_TERR) {
1925                                 stats->tx_errors++;
1926                                 stats->tx_dropped++;
1927                                 if (td->tdesc0.TSR & TSR0_CDH)
1928                                         stats->tx_heartbeat_errors++;
1929                                 if (td->tdesc0.TSR & TSR0_CRS)
1930                                         stats->tx_carrier_errors++;
1931                                 if (td->tdesc0.TSR & TSR0_ABT)
1932                                         stats->tx_aborted_errors++;
1933                                 if (td->tdesc0.TSR & TSR0_OWC)
1934                                         stats->tx_window_errors++;
1935                         } else {
1936                                 stats->tx_packets++;
1937                                 stats->tx_bytes += tdinfo->skb->len;
1938                         }
1939                         velocity_free_tx_buf(vptr, tdinfo, td);
1940                         vptr->tx.used[qnum]--;
1941                 }
1942                 vptr->tx.tail[qnum] = idx;
1943 
1944                 if (AVAIL_TD(vptr, qnum) < 1)
1945                         full = 1;
1946         }
1947         /*
1948          *      Look to see if we should kick the transmit network
1949          *      layer for more work.
1950          */
1951         if (netif_queue_stopped(vptr->netdev) && (full == 0) &&
1952             (!(vptr->mii_status & VELOCITY_LINK_FAIL))) {
1953                 netif_wake_queue(vptr->netdev);
1954         }
1955         return works;
1956 }
1957 
1958 /**
1959  *      velocity_rx_csum        -       checksum process
1960  *      @rd: receive packet descriptor
1961  *      @skb: network layer packet buffer
1962  *
1963  *      Process the status bits for the received packet and determine
1964  *      if the checksum was computed and verified by the hardware
1965  */
1966 static inline void velocity_rx_csum(struct rx_desc *rd, struct sk_buff *skb)
1967 {
1968         skb_checksum_none_assert(skb);
1969 
1970         if (rd->rdesc1.CSM & CSM_IPKT) {
1971                 if (rd->rdesc1.CSM & CSM_IPOK) {
1972                         if ((rd->rdesc1.CSM & CSM_TCPKT) ||
1973                                         (rd->rdesc1.CSM & CSM_UDPKT)) {
1974                                 if (!(rd->rdesc1.CSM & CSM_TUPOK))
1975                                         return;
1976                         }
1977                         skb->ip_summed = CHECKSUM_UNNECESSARY;
1978                 }
1979         }
1980 }
1981 
1982 /**
1983  *      velocity_rx_copy        -       in place Rx copy for small packets
1984  *      @rx_skb: network layer packet buffer candidate
1985  *      @pkt_size: received data size
1986  *      @rd: receive packet descriptor
1987  *      @dev: network device
1988  *
1989  *      Replace the current skb that is scheduled for Rx processing by a
1990  *      shorter, immediately allocated skb, if the received packet is small
1991  *      enough. This function returns a negative value if the received
1992  *      packet is too big or if memory is exhausted.
1993  */
1994 static int velocity_rx_copy(struct sk_buff **rx_skb, int pkt_size,
1995                             struct velocity_info *vptr)
1996 {
1997         int ret = -1;
1998         if (pkt_size < rx_copybreak) {
1999                 struct sk_buff *new_skb;
2000 
2001                 new_skb = netdev_alloc_skb_ip_align(vptr->netdev, pkt_size);
2002                 if (new_skb) {
2003                         new_skb->ip_summed = rx_skb[0]->ip_summed;
2004                         skb_copy_from_linear_data(*rx_skb, new_skb->data, pkt_size);
2005                         *rx_skb = new_skb;
2006                         ret = 0;
2007                 }
2008 
2009         }
2010         return ret;
2011 }
2012 
2013 /**
2014  *      velocity_iph_realign    -       IP header alignment
2015  *      @vptr: velocity we are handling
2016  *      @skb: network layer packet buffer
2017  *      @pkt_size: received data size
2018  *
2019  *      Align IP header on a 2 bytes boundary. This behavior can be
2020  *      configured by the user.
2021  */
2022 static inline void velocity_iph_realign(struct velocity_info *vptr,
2023                                         struct sk_buff *skb, int pkt_size)
2024 {
2025         if (vptr->flags & VELOCITY_FLAGS_IP_ALIGN) {
2026                 memmove(skb->data + 2, skb->data, pkt_size);
2027                 skb_reserve(skb, 2);
2028         }
2029 }
2030 
2031 /**
2032  *      velocity_receive_frame  -       received packet processor
2033  *      @vptr: velocity we are handling
2034  *      @idx: ring index
2035  *
2036  *      A packet has arrived. We process the packet and if appropriate
2037  *      pass the frame up the network stack
2038  */
2039 static int velocity_receive_frame(struct velocity_info *vptr, int idx)
2040 {
2041         struct net_device_stats *stats = &vptr->netdev->stats;
2042         struct velocity_rd_info *rd_info = &(vptr->rx.info[idx]);
2043         struct rx_desc *rd = &(vptr->rx.ring[idx]);
2044         int pkt_len = le16_to_cpu(rd->rdesc0.len) & 0x3fff;
2045         struct sk_buff *skb;
2046 
2047         if (unlikely(rd->rdesc0.RSR & (RSR_STP | RSR_EDP | RSR_RL))) {
2048                 if (rd->rdesc0.RSR & (RSR_STP | RSR_EDP))
2049                         VELOCITY_PRT(MSG_LEVEL_VERBOSE, KERN_ERR " %s : the received frame spans multiple RDs.\n", vptr->netdev->name);
2050                 stats->rx_length_errors++;
2051                 return -EINVAL;
2052         }
2053 
2054         if (rd->rdesc0.RSR & RSR_MAR)
2055                 stats->multicast++;
2056 
2057         skb = rd_info->skb;
2058 
2059         dma_sync_single_for_cpu(vptr->dev, rd_info->skb_dma,
2060                                     vptr->rx.buf_sz, DMA_FROM_DEVICE);
2061 
2062         velocity_rx_csum(rd, skb);
2063 
2064         if (velocity_rx_copy(&skb, pkt_len, vptr) < 0) {
2065                 velocity_iph_realign(vptr, skb, pkt_len);
2066                 rd_info->skb = NULL;
2067                 dma_unmap_single(vptr->dev, rd_info->skb_dma, vptr->rx.buf_sz,
2068                                  DMA_FROM_DEVICE);
2069         } else {
2070                 dma_sync_single_for_device(vptr->dev, rd_info->skb_dma,
2071                                            vptr->rx.buf_sz, DMA_FROM_DEVICE);
2072         }
2073 
2074         skb_put(skb, pkt_len - 4);
2075         skb->protocol = eth_type_trans(skb, vptr->netdev);
2076 
2077         if (rd->rdesc0.RSR & RSR_DETAG) {
2078                 u16 vid = swab16(le16_to_cpu(rd->rdesc1.PQTAG));
2079 
2080                 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid);
2081         }
2082         netif_receive_skb(skb);
2083 
2084         stats->rx_bytes += pkt_len;
2085         stats->rx_packets++;
2086 
2087         return 0;
2088 }
2089 
2090 /**
2091  *      velocity_rx_srv         -       service RX interrupt
2092  *      @vptr: velocity
2093  *
2094  *      Walk the receive ring of the velocity adapter and remove
2095  *      any received packets from the receive queue. Hand the ring
2096  *      slots back to the adapter for reuse.
2097  */
2098 static int velocity_rx_srv(struct velocity_info *vptr, int budget_left)
2099 {
2100         struct net_device_stats *stats = &vptr->netdev->stats;
2101         int rd_curr = vptr->rx.curr;
2102         int works = 0;
2103 
2104         while (works < budget_left) {
2105                 struct rx_desc *rd = vptr->rx.ring + rd_curr;
2106 
2107                 if (!vptr->rx.info[rd_curr].skb)
2108                         break;
2109 
2110                 if (rd->rdesc0.len & OWNED_BY_NIC)
2111                         break;
2112 
2113                 rmb();
2114 
2115                 /*
2116                  *      Don't drop CE or RL error frame although RXOK is off
2117                  */
2118                 if (rd->rdesc0.RSR & (RSR_RXOK | RSR_CE | RSR_RL)) {
2119                         if (velocity_receive_frame(vptr, rd_curr) < 0)
2120                                 stats->rx_dropped++;
2121                 } else {
2122                         if (rd->rdesc0.RSR & RSR_CRC)
2123                                 stats->rx_crc_errors++;
2124                         if (rd->rdesc0.RSR & RSR_FAE)
2125                                 stats->rx_frame_errors++;
2126 
2127                         stats->rx_dropped++;
2128                 }
2129 
2130                 rd->size |= RX_INTEN;
2131 
2132                 rd_curr++;
2133                 if (rd_curr >= vptr->options.numrx)
2134                         rd_curr = 0;
2135                 works++;
2136         }
2137 
2138         vptr->rx.curr = rd_curr;
2139 
2140         if ((works > 0) && (velocity_rx_refill(vptr) > 0))
2141                 velocity_give_many_rx_descs(vptr);
2142 
2143         VAR_USED(stats);
2144         return works;
2145 }
2146 
2147 static int velocity_poll(struct napi_struct *napi, int budget)
2148 {
2149         struct velocity_info *vptr = container_of(napi,
2150                         struct velocity_info, napi);
2151         unsigned int rx_done;
2152         unsigned long flags;
2153 
2154         /*
2155          * Do rx and tx twice for performance (taken from the VIA
2156          * out-of-tree driver).
2157          */
2158         rx_done = velocity_rx_srv(vptr, budget);
2159         spin_lock_irqsave(&vptr->lock, flags);
2160         velocity_tx_srv(vptr);
2161         /* If budget not fully consumed, exit the polling mode */
2162         if (rx_done < budget) {
2163                 napi_complete(napi);
2164                 mac_enable_int(vptr->mac_regs);
2165         }
2166         spin_unlock_irqrestore(&vptr->lock, flags);
2167 
2168         return rx_done;
2169 }
2170 
2171 /**
2172  *      velocity_intr           -       interrupt callback
2173  *      @irq: interrupt number
2174  *      @dev_instance: interrupting device
2175  *
2176  *      Called whenever an interrupt is generated by the velocity
2177  *      adapter IRQ line. We may not be the source of the interrupt
2178  *      and need to identify initially if we are, and if not exit as
2179  *      efficiently as possible.
2180  */
2181 static irqreturn_t velocity_intr(int irq, void *dev_instance)
2182 {
2183         struct net_device *dev = dev_instance;
2184         struct velocity_info *vptr = netdev_priv(dev);
2185         u32 isr_status;
2186 
2187         spin_lock(&vptr->lock);
2188         isr_status = mac_read_isr(vptr->mac_regs);
2189 
2190         /* Not us ? */
2191         if (isr_status == 0) {
2192                 spin_unlock(&vptr->lock);
2193                 return IRQ_NONE;
2194         }
2195 
2196         /* Ack the interrupt */
2197         mac_write_isr(vptr->mac_regs, isr_status);
2198 
2199         if (likely(napi_schedule_prep(&vptr->napi))) {
2200                 mac_disable_int(vptr->mac_regs);
2201                 __napi_schedule(&vptr->napi);
2202         }
2203 
2204         if (isr_status & (~(ISR_PRXI | ISR_PPRXI | ISR_PTXI | ISR_PPTXI)))
2205                 velocity_error(vptr, isr_status);
2206 
2207         spin_unlock(&vptr->lock);
2208 
2209         return IRQ_HANDLED;
2210 }
2211 
2212 /**
2213  *      velocity_open           -       interface activation callback
2214  *      @dev: network layer device to open
2215  *
2216  *      Called when the network layer brings the interface up. Returns
2217  *      a negative posix error code on failure, or zero on success.
2218  *
2219  *      All the ring allocation and set up is done on open for this
2220  *      adapter to minimise memory usage when inactive
2221  */
2222 static int velocity_open(struct net_device *dev)
2223 {
2224         struct velocity_info *vptr = netdev_priv(dev);
2225         int ret;
2226 
2227         ret = velocity_init_rings(vptr, dev->mtu);
2228         if (ret < 0)
2229                 goto out;
2230 
2231         /* Ensure chip is running */
2232         velocity_set_power_state(vptr, PCI_D0);
2233 
2234         velocity_init_registers(vptr, VELOCITY_INIT_COLD);
2235 
2236         ret = request_irq(dev->irq, velocity_intr, IRQF_SHARED,
2237                           dev->name, dev);
2238         if (ret < 0) {
2239                 /* Power down the chip */
2240                 velocity_set_power_state(vptr, PCI_D3hot);
2241                 velocity_free_rings(vptr);
2242                 goto out;
2243         }
2244 
2245         velocity_give_many_rx_descs(vptr);
2246 
2247         mac_enable_int(vptr->mac_regs);
2248         netif_start_queue(dev);
2249         napi_enable(&vptr->napi);
2250         vptr->flags |= VELOCITY_FLAGS_OPENED;
2251 out:
2252         return ret;
2253 }
2254 
2255 /**
2256  *      velocity_shutdown       -       shut down the chip
2257  *      @vptr: velocity to deactivate
2258  *
2259  *      Shuts down the internal operations of the velocity and
2260  *      disables interrupts, autopolling, transmit and receive
2261  */
2262 static void velocity_shutdown(struct velocity_info *vptr)
2263 {
2264         struct mac_regs __iomem *regs = vptr->mac_regs;
2265         mac_disable_int(regs);
2266         writel(CR0_STOP, &regs->CR0Set);
2267         writew(0xFFFF, &regs->TDCSRClr);
2268         writeb(0xFF, &regs->RDCSRClr);
2269         safe_disable_mii_autopoll(regs);
2270         mac_clear_isr(regs);
2271 }
2272 
2273 /**
2274  *      velocity_change_mtu     -       MTU change callback
2275  *      @dev: network device
2276  *      @new_mtu: desired MTU
2277  *
2278  *      Handle requests from the networking layer for MTU change on
2279  *      this interface. It gets called on a change by the network layer.
2280  *      Return zero for success or negative posix error code.
2281  */
2282 static int velocity_change_mtu(struct net_device *dev, int new_mtu)
2283 {
2284         struct velocity_info *vptr = netdev_priv(dev);
2285         int ret = 0;
2286 
2287         if (!netif_running(dev)) {
2288                 dev->mtu = new_mtu;
2289                 goto out_0;
2290         }
2291 
2292         if (dev->mtu != new_mtu) {
2293                 struct velocity_info *tmp_vptr;
2294                 unsigned long flags;
2295                 struct rx_info rx;
2296                 struct tx_info tx;
2297 
2298                 tmp_vptr = kzalloc(sizeof(*tmp_vptr), GFP_KERNEL);
2299                 if (!tmp_vptr) {
2300                         ret = -ENOMEM;
2301                         goto out_0;
2302                 }
2303 
2304                 tmp_vptr->netdev = dev;
2305                 tmp_vptr->pdev = vptr->pdev;
2306                 tmp_vptr->dev = vptr->dev;
2307                 tmp_vptr->options = vptr->options;
2308                 tmp_vptr->tx.numq = vptr->tx.numq;
2309 
2310                 ret = velocity_init_rings(tmp_vptr, new_mtu);
2311                 if (ret < 0)
2312                         goto out_free_tmp_vptr_1;
2313 
2314                 napi_disable(&vptr->napi);
2315 
2316                 spin_lock_irqsave(&vptr->lock, flags);
2317 
2318                 netif_stop_queue(dev);
2319                 velocity_shutdown(vptr);
2320 
2321                 rx = vptr->rx;
2322                 tx = vptr->tx;
2323 
2324                 vptr->rx = tmp_vptr->rx;
2325                 vptr->tx = tmp_vptr->tx;
2326 
2327                 tmp_vptr->rx = rx;
2328                 tmp_vptr->tx = tx;
2329 
2330                 dev->mtu = new_mtu;
2331 
2332                 velocity_init_registers(vptr, VELOCITY_INIT_COLD);
2333 
2334                 velocity_give_many_rx_descs(vptr);
2335 
2336                 napi_enable(&vptr->napi);
2337 
2338                 mac_enable_int(vptr->mac_regs);
2339                 netif_start_queue(dev);
2340 
2341                 spin_unlock_irqrestore(&vptr->lock, flags);
2342 
2343                 velocity_free_rings(tmp_vptr);
2344 
2345 out_free_tmp_vptr_1:
2346                 kfree(tmp_vptr);
2347         }
2348 out_0:
2349         return ret;
2350 }
2351 
2352 #ifdef CONFIG_NET_POLL_CONTROLLER
2353 /**
2354  *  velocity_poll_controller            -       Velocity Poll controller function
2355  *  @dev: network device
2356  *
2357  *
2358  *  Used by NETCONSOLE and other diagnostic tools to allow network I/P
2359  *  with interrupts disabled.
2360  */
2361 static void velocity_poll_controller(struct net_device *dev)
2362 {
2363         disable_irq(dev->irq);
2364         velocity_intr(dev->irq, dev);
2365         enable_irq(dev->irq);
2366 }
2367 #endif
2368 
2369 /**
2370  *      velocity_mii_ioctl              -       MII ioctl handler
2371  *      @dev: network device
2372  *      @ifr: the ifreq block for the ioctl
2373  *      @cmd: the command
2374  *
2375  *      Process MII requests made via ioctl from the network layer. These
2376  *      are used by tools like kudzu to interrogate the link state of the
2377  *      hardware
2378  */
2379 static int velocity_mii_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
2380 {
2381         struct velocity_info *vptr = netdev_priv(dev);
2382         struct mac_regs __iomem *regs = vptr->mac_regs;
2383         unsigned long flags;
2384         struct mii_ioctl_data *miidata = if_mii(ifr);
2385         int err;
2386 
2387         switch (cmd) {
2388         case SIOCGMIIPHY:
2389                 miidata->phy_id = readb(&regs->MIIADR) & 0x1f;
2390                 break;
2391         case SIOCGMIIREG:
2392                 if (velocity_mii_read(vptr->mac_regs, miidata->reg_num & 0x1f, &(miidata->val_out)) < 0)
2393                         return -ETIMEDOUT;
2394                 break;
2395         case SIOCSMIIREG:
2396                 spin_lock_irqsave(&vptr->lock, flags);
2397                 err = velocity_mii_write(vptr->mac_regs, miidata->reg_num & 0x1f, miidata->val_in);
2398                 spin_unlock_irqrestore(&vptr->lock, flags);
2399                 check_connection_type(vptr->mac_regs);
2400                 if (err)
2401                         return err;
2402                 break;
2403         default:
2404                 return -EOPNOTSUPP;
2405         }
2406         return 0;
2407 }
2408 
2409 /**
2410  *      velocity_ioctl          -       ioctl entry point
2411  *      @dev: network device
2412  *      @rq: interface request ioctl
2413  *      @cmd: command code
2414  *
2415  *      Called when the user issues an ioctl request to the network
2416  *      device in question. The velocity interface supports MII.
2417  */
2418 static int velocity_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2419 {
2420         struct velocity_info *vptr = netdev_priv(dev);
2421         int ret;
2422 
2423         /* If we are asked for information and the device is power
2424            saving then we need to bring the device back up to talk to it */
2425 
2426         if (!netif_running(dev))
2427                 velocity_set_power_state(vptr, PCI_D0);
2428 
2429         switch (cmd) {
2430         case SIOCGMIIPHY:       /* Get address of MII PHY in use. */
2431         case SIOCGMIIREG:       /* Read MII PHY register. */
2432         case SIOCSMIIREG:       /* Write to MII PHY register. */
2433                 ret = velocity_mii_ioctl(dev, rq, cmd);
2434                 break;
2435 
2436         default:
2437                 ret = -EOPNOTSUPP;
2438         }
2439         if (!netif_running(dev))
2440                 velocity_set_power_state(vptr, PCI_D3hot);
2441 
2442 
2443         return ret;
2444 }
2445 
2446 /**
2447  *      velocity_get_status     -       statistics callback
2448  *      @dev: network device
2449  *
2450  *      Callback from the network layer to allow driver statistics
2451  *      to be resynchronized with hardware collected state. In the
2452  *      case of the velocity we need to pull the MIB counters from
2453  *      the hardware into the counters before letting the network
2454  *      layer display them.
2455  */
2456 static struct net_device_stats *velocity_get_stats(struct net_device *dev)
2457 {
2458         struct velocity_info *vptr = netdev_priv(dev);
2459 
2460         /* If the hardware is down, don't touch MII */
2461         if (!netif_running(dev))
2462                 return &dev->stats;
2463 
2464         spin_lock_irq(&vptr->lock);
2465         velocity_update_hw_mibs(vptr);
2466         spin_unlock_irq(&vptr->lock);
2467 
2468         dev->stats.rx_packets = vptr->mib_counter[HW_MIB_ifRxAllPkts];
2469         dev->stats.rx_errors = vptr->mib_counter[HW_MIB_ifRxErrorPkts];
2470         dev->stats.rx_length_errors = vptr->mib_counter[HW_MIB_ifInRangeLengthErrors];
2471 
2472 //  unsigned long   rx_dropped;     /* no space in linux buffers    */
2473         dev->stats.collisions = vptr->mib_counter[HW_MIB_ifTxEtherCollisions];
2474         /* detailed rx_errors: */
2475 //  unsigned long   rx_length_errors;
2476 //  unsigned long   rx_over_errors;     /* receiver ring buff overflow  */
2477         dev->stats.rx_crc_errors = vptr->mib_counter[HW_MIB_ifRxPktCRCE];
2478 //  unsigned long   rx_frame_errors;    /* recv'd frame alignment error */
2479 //  unsigned long   rx_fifo_errors;     /* recv'r fifo overrun      */
2480 //  unsigned long   rx_missed_errors;   /* receiver missed packet   */
2481 
2482         /* detailed tx_errors */
2483 //  unsigned long   tx_fifo_errors;
2484 
2485         return &dev->stats;
2486 }
2487 
2488 /**
2489  *      velocity_close          -       close adapter callback
2490  *      @dev: network device
2491  *
2492  *      Callback from the network layer when the velocity is being
2493  *      deactivated by the network layer
2494  */
2495 static int velocity_close(struct net_device *dev)
2496 {
2497         struct velocity_info *vptr = netdev_priv(dev);
2498 
2499         napi_disable(&vptr->napi);
2500         netif_stop_queue(dev);
2501         velocity_shutdown(vptr);
2502 
2503         if (vptr->flags & VELOCITY_FLAGS_WOL_ENABLED)
2504                 velocity_get_ip(vptr);
2505 
2506         free_irq(dev->irq, dev);
2507 
2508         velocity_free_rings(vptr);
2509 
2510         vptr->flags &= (~VELOCITY_FLAGS_OPENED);
2511         return 0;
2512 }
2513 
2514 /**
2515  *      velocity_xmit           -       transmit packet callback
2516  *      @skb: buffer to transmit
2517  *      @dev: network device
2518  *
2519  *      Called by the networ layer to request a packet is queued to
2520  *      the velocity. Returns zero on success.
2521  */
2522 static netdev_tx_t velocity_xmit(struct sk_buff *skb,
2523                                  struct net_device *dev)
2524 {
2525         struct velocity_info *vptr = netdev_priv(dev);
2526         int qnum = 0;
2527         struct tx_desc *td_ptr;
2528         struct velocity_td_info *tdinfo;
2529         unsigned long flags;
2530         int pktlen;
2531         int index, prev;
2532         int i = 0;
2533 
2534         if (skb_padto(skb, ETH_ZLEN))
2535                 goto out;
2536 
2537         /* The hardware can handle at most 7 memory segments, so merge
2538          * the skb if there are more */
2539         if (skb_shinfo(skb)->nr_frags > 6 && __skb_linearize(skb)) {
2540                 dev_kfree_skb_any(skb);
2541                 return NETDEV_TX_OK;
2542         }
2543 
2544         pktlen = skb_shinfo(skb)->nr_frags == 0 ?
2545                         max_t(unsigned int, skb->len, ETH_ZLEN) :
2546                                 skb_headlen(skb);
2547 
2548         spin_lock_irqsave(&vptr->lock, flags);
2549 
2550         index = vptr->tx.curr[qnum];
2551         td_ptr = &(vptr->tx.rings[qnum][index]);
2552         tdinfo = &(vptr->tx.infos[qnum][index]);
2553 
2554         td_ptr->tdesc1.TCR = TCR0_TIC;
2555         td_ptr->td_buf[0].size &= ~TD_QUEUE;
2556 
2557         /*
2558          *      Map the linear network buffer into PCI space and
2559          *      add it to the transmit ring.
2560          */
2561         tdinfo->skb = skb;
2562         tdinfo->skb_dma[0] = dma_map_single(vptr->dev, skb->data, pktlen,
2563                                                                 DMA_TO_DEVICE);
2564         td_ptr->tdesc0.len = cpu_to_le16(pktlen);
2565         td_ptr->td_buf[0].pa_low = cpu_to_le32(tdinfo->skb_dma[0]);
2566         td_ptr->td_buf[0].pa_high = 0;
2567         td_ptr->td_buf[0].size = cpu_to_le16(pktlen);
2568 
2569         /* Handle fragments */
2570         for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
2571                 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
2572 
2573                 tdinfo->skb_dma[i + 1] = skb_frag_dma_map(vptr->dev,
2574                                                           frag, 0,
2575                                                           skb_frag_size(frag),
2576                                                           DMA_TO_DEVICE);
2577 
2578                 td_ptr->td_buf[i + 1].pa_low = cpu_to_le32(tdinfo->skb_dma[i + 1]);
2579                 td_ptr->td_buf[i + 1].pa_high = 0;
2580                 td_ptr->td_buf[i + 1].size = cpu_to_le16(skb_frag_size(frag));
2581         }
2582         tdinfo->nskb_dma = i + 1;
2583 
2584         td_ptr->tdesc1.cmd = TCPLS_NORMAL + (tdinfo->nskb_dma + 1) * 16;
2585 
2586         if (skb_vlan_tag_present(skb)) {
2587                 td_ptr->tdesc1.vlan = cpu_to_le16(skb_vlan_tag_get(skb));
2588                 td_ptr->tdesc1.TCR |= TCR0_VETAG;
2589         }
2590 
2591         /*
2592          *      Handle hardware checksum
2593          */
2594         if (skb->ip_summed == CHECKSUM_PARTIAL) {
2595                 const struct iphdr *ip = ip_hdr(skb);
2596                 if (ip->protocol == IPPROTO_TCP)
2597                         td_ptr->tdesc1.TCR |= TCR0_TCPCK;
2598                 else if (ip->protocol == IPPROTO_UDP)
2599                         td_ptr->tdesc1.TCR |= (TCR0_UDPCK);
2600                 td_ptr->tdesc1.TCR |= TCR0_IPCK;
2601         }
2602 
2603         prev = index - 1;
2604         if (prev < 0)
2605                 prev = vptr->options.numtx - 1;
2606         td_ptr->tdesc0.len |= OWNED_BY_NIC;
2607         vptr->tx.used[qnum]++;
2608         vptr->tx.curr[qnum] = (index + 1) % vptr->options.numtx;
2609 
2610         if (AVAIL_TD(vptr, qnum) < 1)
2611                 netif_stop_queue(dev);
2612 
2613         td_ptr = &(vptr->tx.rings[qnum][prev]);
2614         td_ptr->td_buf[0].size |= TD_QUEUE;
2615         mac_tx_queue_wake(vptr->mac_regs, qnum);
2616 
2617         spin_unlock_irqrestore(&vptr->lock, flags);
2618 out:
2619         return NETDEV_TX_OK;
2620 }
2621 
2622 static const struct net_device_ops velocity_netdev_ops = {
2623         .ndo_open               = velocity_open,
2624         .ndo_stop               = velocity_close,
2625         .ndo_start_xmit         = velocity_xmit,
2626         .ndo_get_stats          = velocity_get_stats,
2627         .ndo_validate_addr      = eth_validate_addr,
2628         .ndo_set_mac_address    = eth_mac_addr,
2629         .ndo_set_rx_mode        = velocity_set_multi,
2630         .ndo_change_mtu         = velocity_change_mtu,
2631         .ndo_do_ioctl           = velocity_ioctl,
2632         .ndo_vlan_rx_add_vid    = velocity_vlan_rx_add_vid,
2633         .ndo_vlan_rx_kill_vid   = velocity_vlan_rx_kill_vid,
2634 #ifdef CONFIG_NET_POLL_CONTROLLER
2635         .ndo_poll_controller = velocity_poll_controller,
2636 #endif
2637 };
2638 
2639 /**
2640  *      velocity_init_info      -       init private data
2641  *      @pdev: PCI device
2642  *      @vptr: Velocity info
2643  *      @info: Board type
2644  *
2645  *      Set up the initial velocity_info struct for the device that has been
2646  *      discovered.
2647  */
2648 static void velocity_init_info(struct velocity_info *vptr,
2649                                 const struct velocity_info_tbl *info)
2650 {
2651         vptr->chip_id = info->chip_id;
2652         vptr->tx.numq = info->txqueue;
2653         vptr->multicast_limit = MCAM_SIZE;
2654         spin_lock_init(&vptr->lock);
2655 }
2656 
2657 /**
2658  *      velocity_get_pci_info   -       retrieve PCI info for device
2659  *      @vptr: velocity device
2660  *      @pdev: PCI device it matches
2661  *
2662  *      Retrieve the PCI configuration space data that interests us from
2663  *      the kernel PCI layer
2664  */
2665 static int velocity_get_pci_info(struct velocity_info *vptr)
2666 {
2667         struct pci_dev *pdev = vptr->pdev;
2668 
2669         pci_set_master(pdev);
2670 
2671         vptr->ioaddr = pci_resource_start(pdev, 0);
2672         vptr->memaddr = pci_resource_start(pdev, 1);
2673 
2674         if (!(pci_resource_flags(pdev, 0) & IORESOURCE_IO)) {
2675                 dev_err(&pdev->dev,
2676                            "region #0 is not an I/O resource, aborting.\n");
2677                 return -EINVAL;
2678         }
2679 
2680         if ((pci_resource_flags(pdev, 1) & IORESOURCE_IO)) {
2681                 dev_err(&pdev->dev,
2682                            "region #1 is an I/O resource, aborting.\n");
2683                 return -EINVAL;
2684         }
2685 
2686         if (pci_resource_len(pdev, 1) < VELOCITY_IO_SIZE) {
2687                 dev_err(&pdev->dev, "region #1 is too small.\n");
2688                 return -EINVAL;
2689         }
2690 
2691         return 0;
2692 }
2693 
2694 /**
2695  *      velocity_get_platform_info - retrieve platform info for device
2696  *      @vptr: velocity device
2697  *      @pdev: platform device it matches
2698  *
2699  *      Retrieve the Platform configuration data that interests us
2700  */
2701 static int velocity_get_platform_info(struct velocity_info *vptr)
2702 {
2703         struct resource res;
2704         int ret;
2705 
2706         if (of_get_property(vptr->dev->of_node, "no-eeprom", NULL))
2707                 vptr->no_eeprom = 1;
2708 
2709         ret = of_address_to_resource(vptr->dev->of_node, 0, &res);
2710         if (ret) {
2711                 dev_err(vptr->dev, "unable to find memory address\n");
2712                 return ret;
2713         }
2714 
2715         vptr->memaddr = res.start;
2716 
2717         if (resource_size(&res) < VELOCITY_IO_SIZE) {
2718                 dev_err(vptr->dev, "memory region is too small.\n");
2719                 return -EINVAL;
2720         }
2721 
2722         return 0;
2723 }
2724 
2725 /**
2726  *      velocity_print_info     -       per driver data
2727  *      @vptr: velocity
2728  *
2729  *      Print per driver data as the kernel driver finds Velocity
2730  *      hardware
2731  */
2732 static void velocity_print_info(struct velocity_info *vptr)
2733 {
2734         struct net_device *dev = vptr->netdev;
2735 
2736         printk(KERN_INFO "%s: %s\n", dev->name, get_chip_name(vptr->chip_id));
2737         printk(KERN_INFO "%s: Ethernet Address: %pM\n",
2738                 dev->name, dev->dev_addr);
2739 }
2740 
2741 static u32 velocity_get_link(struct net_device *dev)
2742 {
2743         struct velocity_info *vptr = netdev_priv(dev);
2744         struct mac_regs __iomem *regs = vptr->mac_regs;
2745         return BYTE_REG_BITS_IS_ON(PHYSR0_LINKGD, &regs->PHYSR0) ? 1 : 0;
2746 }
2747 
2748 /**
2749  *      velocity_probe - set up discovered velocity device
2750  *      @pdev: PCI device
2751  *      @ent: PCI device table entry that matched
2752  *      @bustype: bus that device is connected to
2753  *
2754  *      Configure a discovered adapter from scratch. Return a negative
2755  *      errno error code on failure paths.
2756  */
2757 static int velocity_probe(struct device *dev, int irq,
2758                            const struct velocity_info_tbl *info,
2759                            enum velocity_bus_type bustype)
2760 {
2761         static int first = 1;
2762         struct net_device *netdev;
2763         int i;
2764         const char *drv_string;
2765         struct velocity_info *vptr;
2766         struct mac_regs __iomem *regs;
2767         int ret = -ENOMEM;
2768 
2769         /* FIXME: this driver, like almost all other ethernet drivers,
2770          * can support more than MAX_UNITS.
2771          */
2772         if (velocity_nics >= MAX_UNITS) {
2773                 dev_notice(dev, "already found %d NICs.\n", velocity_nics);
2774                 return -ENODEV;
2775         }
2776 
2777         netdev = alloc_etherdev(sizeof(struct velocity_info));
2778         if (!netdev)
2779                 goto out;
2780 
2781         /* Chain it all together */
2782 
2783         SET_NETDEV_DEV(netdev, dev);
2784         vptr = netdev_priv(netdev);
2785 
2786         if (first) {
2787                 printk(KERN_INFO "%s Ver. %s\n",
2788                         VELOCITY_FULL_DRV_NAM, VELOCITY_VERSION);
2789                 printk(KERN_INFO "Copyright (c) 2002, 2003 VIA Networking Technologies, Inc.\n");
2790                 printk(KERN_INFO "Copyright (c) 2004 Red Hat Inc.\n");
2791                 first = 0;
2792         }
2793 
2794         netdev->irq = irq;
2795         vptr->netdev = netdev;
2796         vptr->dev = dev;
2797 
2798         velocity_init_info(vptr, info);
2799 
2800         if (bustype == BUS_PCI) {
2801                 vptr->pdev = to_pci_dev(dev);
2802 
2803                 ret = velocity_get_pci_info(vptr);
2804                 if (ret < 0)
2805                         goto err_free_dev;
2806         } else {
2807                 vptr->pdev = NULL;
2808                 ret = velocity_get_platform_info(vptr);
2809                 if (ret < 0)
2810                         goto err_free_dev;
2811         }
2812 
2813         regs = ioremap(vptr->memaddr, VELOCITY_IO_SIZE);
2814         if (regs == NULL) {
2815                 ret = -EIO;
2816                 goto err_free_dev;
2817         }
2818 
2819         vptr->mac_regs = regs;
2820         vptr->rev_id = readb(&regs->rev_id);
2821 
2822         mac_wol_reset(regs);
2823 
2824         for (i = 0; i < 6; i++)
2825                 netdev->dev_addr[i] = readb(&regs->PAR[i]);
2826 
2827 
2828         drv_string = dev_driver_string(dev);
2829 
2830         velocity_get_options(&vptr->options, velocity_nics, drv_string);
2831 
2832         /*
2833          *      Mask out the options cannot be set to the chip
2834          */
2835 
2836         vptr->options.flags &= info->flags;
2837 
2838         /*
2839          *      Enable the chip specified capbilities
2840          */
2841 
2842         vptr->flags = vptr->options.flags | (info->flags & 0xFF000000UL);
2843 
2844         vptr->wol_opts = vptr->options.wol_opts;
2845         vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
2846 
2847         vptr->phy_id = MII_GET_PHY_ID(vptr->mac_regs);
2848 
2849         netdev->netdev_ops = &velocity_netdev_ops;
2850         netdev->ethtool_ops = &velocity_ethtool_ops;
2851         netif_napi_add(netdev, &vptr->napi, velocity_poll,
2852                                                         VELOCITY_NAPI_WEIGHT);
2853 
2854         netdev->hw_features = NETIF_F_IP_CSUM | NETIF_F_SG |
2855                            NETIF_F_HW_VLAN_CTAG_TX;
2856         netdev->features |= NETIF_F_HW_VLAN_CTAG_TX |
2857                         NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_VLAN_CTAG_RX |
2858                         NETIF_F_IP_CSUM;
2859 
2860         /* MTU range: 64 - 9000 */
2861         netdev->min_mtu = VELOCITY_MIN_MTU;
2862         netdev->max_mtu = VELOCITY_MAX_MTU;
2863 
2864         ret = register_netdev(netdev);
2865         if (ret < 0)
2866                 goto err_iounmap;
2867 
2868         if (!velocity_get_link(netdev)) {
2869                 netif_carrier_off(netdev);
2870                 vptr->mii_status |= VELOCITY_LINK_FAIL;
2871         }
2872 
2873         velocity_print_info(vptr);
2874         dev_set_drvdata(vptr->dev, netdev);
2875 
2876         /* and leave the chip powered down */
2877 
2878         velocity_set_power_state(vptr, PCI_D3hot);
2879         velocity_nics++;
2880 out:
2881         return ret;
2882 
2883 err_iounmap:
2884         netif_napi_del(&vptr->napi);
2885         iounmap(regs);
2886 err_free_dev:
2887         free_netdev(netdev);
2888         goto out;
2889 }
2890 
2891 /**
2892  *      velocity_remove - device unplug
2893  *      @dev: device being removed
2894  *
2895  *      Device unload callback. Called on an unplug or on module
2896  *      unload for each active device that is present. Disconnects
2897  *      the device from the network layer and frees all the resources
2898  */
2899 static int velocity_remove(struct device *dev)
2900 {
2901         struct net_device *netdev = dev_get_drvdata(dev);
2902         struct velocity_info *vptr = netdev_priv(netdev);
2903 
2904         unregister_netdev(netdev);
2905         netif_napi_del(&vptr->napi);
2906         iounmap(vptr->mac_regs);
2907         free_netdev(netdev);
2908         velocity_nics--;
2909 
2910         return 0;
2911 }
2912 
2913 static int velocity_pci_probe(struct pci_dev *pdev,
2914                                const struct pci_device_id *ent)
2915 {
2916         const struct velocity_info_tbl *info =
2917                                         &chip_info_table[ent->driver_data];
2918         int ret;
2919 
2920         ret = pci_enable_device(pdev);
2921         if (ret < 0)
2922                 return ret;
2923 
2924         ret = pci_request_regions(pdev, VELOCITY_NAME);
2925         if (ret < 0) {
2926                 dev_err(&pdev->dev, "No PCI resources.\n");
2927                 goto fail1;
2928         }
2929 
2930         ret = velocity_probe(&pdev->dev, pdev->irq, info, BUS_PCI);
2931         if (ret == 0)
2932                 return 0;
2933 
2934         pci_release_regions(pdev);
2935 fail1:
2936         pci_disable_device(pdev);
2937         return ret;
2938 }
2939 
2940 static void velocity_pci_remove(struct pci_dev *pdev)
2941 {
2942         velocity_remove(&pdev->dev);
2943 
2944         pci_release_regions(pdev);
2945         pci_disable_device(pdev);
2946 }
2947 
2948 static int velocity_platform_probe(struct platform_device *pdev)
2949 {
2950         const struct of_device_id *of_id;
2951         const struct velocity_info_tbl *info;
2952         int irq;
2953 
2954         of_id = of_match_device(velocity_of_ids, &pdev->dev);
2955         if (!of_id)
2956                 return -EINVAL;
2957         info = of_id->data;
2958 
2959         irq = irq_of_parse_and_map(pdev->dev.of_node, 0);
2960         if (!irq)
2961                 return -EINVAL;
2962 
2963         return velocity_probe(&pdev->dev, irq, info, BUS_PLATFORM);
2964 }
2965 
2966 static int velocity_platform_remove(struct platform_device *pdev)
2967 {
2968         velocity_remove(&pdev->dev);
2969 
2970         return 0;
2971 }
2972 
2973 #ifdef CONFIG_PM_SLEEP
2974 /**
2975  *      wol_calc_crc            -       WOL CRC
2976  *      @pattern: data pattern
2977  *      @mask_pattern: mask
2978  *
2979  *      Compute the wake on lan crc hashes for the packet header
2980  *      we are interested in.
2981  */
2982 static u16 wol_calc_crc(int size, u8 *pattern, u8 *mask_pattern)
2983 {
2984         u16 crc = 0xFFFF;
2985         u8 mask;
2986         int i, j;
2987 
2988         for (i = 0; i < size; i++) {
2989                 mask = mask_pattern[i];
2990 
2991                 /* Skip this loop if the mask equals to zero */
2992                 if (mask == 0x00)
2993                         continue;
2994 
2995                 for (j = 0; j < 8; j++) {
2996                         if ((mask & 0x01) == 0) {
2997                                 mask >>= 1;
2998                                 continue;
2999                         }
3000                         mask >>= 1;
3001                         crc = crc_ccitt(crc, &(pattern[i * 8 + j]), 1);
3002                 }
3003         }
3004         /*      Finally, invert the result once to get the correct data */
3005         crc = ~crc;
3006         return bitrev32(crc) >> 16;
3007 }
3008 
3009 /**
3010  *      velocity_set_wol        -       set up for wake on lan
3011  *      @vptr: velocity to set WOL status on
3012  *
3013  *      Set a card up for wake on lan either by unicast or by
3014  *      ARP packet.
3015  *
3016  *      FIXME: check static buffer is safe here
3017  */
3018 static int velocity_set_wol(struct velocity_info *vptr)
3019 {
3020         struct mac_regs __iomem *regs = vptr->mac_regs;
3021         enum speed_opt spd_dpx = vptr->options.spd_dpx;
3022         static u8 buf[256];
3023         int i;
3024 
3025         static u32 mask_pattern[2][4] = {
3026                 {0x00203000, 0x000003C0, 0x00000000, 0x0000000}, /* ARP */
3027                 {0xfffff000, 0xffffffff, 0xffffffff, 0x000ffff}  /* Magic Packet */
3028         };
3029 
3030         writew(0xFFFF, &regs->WOLCRClr);
3031         writeb(WOLCFG_SAB | WOLCFG_SAM, &regs->WOLCFGSet);
3032         writew(WOLCR_MAGIC_EN, &regs->WOLCRSet);
3033 
3034         /*
3035            if (vptr->wol_opts & VELOCITY_WOL_PHY)
3036            writew((WOLCR_LINKON_EN|WOLCR_LINKOFF_EN), &regs->WOLCRSet);
3037          */
3038 
3039         if (vptr->wol_opts & VELOCITY_WOL_UCAST)
3040                 writew(WOLCR_UNICAST_EN, &regs->WOLCRSet);
3041 
3042         if (vptr->wol_opts & VELOCITY_WOL_ARP) {
3043                 struct arp_packet *arp = (struct arp_packet *) buf;
3044                 u16 crc;
3045                 memset(buf, 0, sizeof(struct arp_packet) + 7);
3046 
3047                 for (i = 0; i < 4; i++)
3048                         writel(mask_pattern[0][i], &regs->ByteMask[0][i]);
3049 
3050                 arp->type = htons(ETH_P_ARP);
3051                 arp->ar_op = htons(1);
3052 
3053                 memcpy(arp->ar_tip, vptr->ip_addr, 4);
3054 
3055                 crc = wol_calc_crc((sizeof(struct arp_packet) + 7) / 8, buf,
3056                                 (u8 *) & mask_pattern[0][0]);
3057 
3058                 writew(crc, &regs->PatternCRC[0]);
3059                 writew(WOLCR_ARP_EN, &regs->WOLCRSet);
3060         }
3061 
3062         BYTE_REG_BITS_ON(PWCFG_WOLTYPE, &regs->PWCFGSet);
3063         BYTE_REG_BITS_ON(PWCFG_LEGACY_WOLEN, &regs->PWCFGSet);
3064 
3065         writew(0x0FFF, &regs->WOLSRClr);
3066 
3067         if (spd_dpx == SPD_DPX_1000_FULL)
3068                 goto mac_done;
3069 
3070         if (spd_dpx != SPD_DPX_AUTO)
3071                 goto advertise_done;
3072 
3073         if (vptr->mii_status & VELOCITY_AUTONEG_ENABLE) {
3074                 if (PHYID_GET_PHY_ID(vptr->phy_id) == PHYID_CICADA_CS8201)
3075                         MII_REG_BITS_ON(AUXCR_MDPPS, MII_NCONFIG, vptr->mac_regs);
3076 
3077                 MII_REG_BITS_OFF(ADVERTISE_1000FULL | ADVERTISE_1000HALF, MII_CTRL1000, vptr->mac_regs);
3078         }
3079 
3080         if (vptr->mii_status & VELOCITY_SPEED_1000)
3081                 MII_REG_BITS_ON(BMCR_ANRESTART, MII_BMCR, vptr->mac_regs);
3082 
3083 advertise_done:
3084         BYTE_REG_BITS_ON(CHIPGCR_FCMODE, &regs->CHIPGCR);
3085 
3086         {
3087                 u8 GCR;
3088                 GCR = readb(&regs->CHIPGCR);
3089                 GCR = (GCR & ~CHIPGCR_FCGMII) | CHIPGCR_FCFDX;
3090                 writeb(GCR, &regs->CHIPGCR);
3091         }
3092 
3093 mac_done:
3094         BYTE_REG_BITS_OFF(ISR_PWEI, &regs->ISR);
3095         /* Turn on SWPTAG just before entering power mode */
3096         BYTE_REG_BITS_ON(STICKHW_SWPTAG, &regs->STICKHW);
3097         /* Go to bed ..... */
3098         BYTE_REG_BITS_ON((STICKHW_DS1 | STICKHW_DS0), &regs->STICKHW);
3099 
3100         return 0;
3101 }
3102 
3103 /**
3104  *      velocity_save_context   -       save registers
3105  *      @vptr: velocity
3106  *      @context: buffer for stored context
3107  *
3108  *      Retrieve the current configuration from the velocity hardware
3109  *      and stash it in the context structure, for use by the context
3110  *      restore functions. This allows us to save things we need across
3111  *      power down states
3112  */
3113 static void velocity_save_context(struct velocity_info *vptr, struct velocity_context *context)
3114 {
3115         struct mac_regs __iomem *regs = vptr->mac_regs;
3116         u16 i;
3117         u8 __iomem *ptr = (u8 __iomem *)regs;
3118 
3119         for (i = MAC_REG_PAR; i < MAC_REG_CR0_CLR; i += 4)
3120                 *((u32 *) (context->mac_reg + i)) = readl(ptr + i);
3121 
3122         for (i = MAC_REG_MAR; i < MAC_REG_TDCSR_CLR; i += 4)
3123                 *((u32 *) (context->mac_reg + i)) = readl(ptr + i);
3124 
3125         for (i = MAC_REG_RDBASE_LO; i < MAC_REG_FIFO_TEST0; i += 4)
3126                 *((u32 *) (context->mac_reg + i)) = readl(ptr + i);
3127 
3128 }
3129 
3130 static int velocity_suspend(struct device *dev)
3131 {
3132         struct net_device *netdev = dev_get_drvdata(dev);
3133         struct velocity_info *vptr = netdev_priv(netdev);
3134         unsigned long flags;
3135 
3136         if (!netif_running(vptr->netdev))
3137                 return 0;
3138 
3139         netif_device_detach(vptr->netdev);
3140 
3141         spin_lock_irqsave(&vptr->lock, flags);
3142         if (vptr->pdev)
3143                 pci_save_state(vptr->pdev);
3144 
3145         if (vptr->flags & VELOCITY_FLAGS_WOL_ENABLED) {
3146                 velocity_get_ip(vptr);
3147                 velocity_save_context(vptr, &vptr->context);
3148                 velocity_shutdown(vptr);
3149                 velocity_set_wol(vptr);
3150                 if (vptr->pdev)
3151                         pci_enable_wake(vptr->pdev, PCI_D3hot, 1);
3152                 velocity_set_power_state(vptr, PCI_D3hot);
3153         } else {
3154                 velocity_save_context(vptr, &vptr->context);
3155                 velocity_shutdown(vptr);
3156                 if (vptr->pdev)
3157                         pci_disable_device(vptr->pdev);
3158                 velocity_set_power_state(vptr, PCI_D3hot);
3159         }
3160 
3161         spin_unlock_irqrestore(&vptr->lock, flags);
3162         return 0;
3163 }
3164 
3165 /**
3166  *      velocity_restore_context        -       restore registers
3167  *      @vptr: velocity
3168  *      @context: buffer for stored context
3169  *
3170  *      Reload the register configuration from the velocity context
3171  *      created by velocity_save_context.
3172  */
3173 static void velocity_restore_context(struct velocity_info *vptr, struct velocity_context *context)
3174 {
3175         struct mac_regs __iomem *regs = vptr->mac_regs;
3176         int i;
3177         u8 __iomem *ptr = (u8 __iomem *)regs;
3178 
3179         for (i = MAC_REG_PAR; i < MAC_REG_CR0_SET; i += 4)
3180                 writel(*((u32 *) (context->mac_reg + i)), ptr + i);
3181 
3182         /* Just skip cr0 */
3183         for (i = MAC_REG_CR1_SET; i < MAC_REG_CR0_CLR; i++) {
3184                 /* Clear */
3185                 writeb(~(*((u8 *) (context->mac_reg + i))), ptr + i + 4);
3186                 /* Set */
3187                 writeb(*((u8 *) (context->mac_reg + i)), ptr + i);
3188         }
3189 
3190         for (i = MAC_REG_MAR; i < MAC_REG_IMR; i += 4)
3191                 writel(*((u32 *) (context->mac_reg + i)), ptr + i);
3192 
3193         for (i = MAC_REG_RDBASE_LO; i < MAC_REG_FIFO_TEST0; i += 4)
3194                 writel(*((u32 *) (context->mac_reg + i)), ptr + i);
3195 
3196         for (i = MAC_REG_TDCSR_SET; i <= MAC_REG_RDCSR_SET; i++)
3197                 writeb(*((u8 *) (context->mac_reg + i)), ptr + i);
3198 }
3199 
3200 static int velocity_resume(struct device *dev)
3201 {
3202         struct net_device *netdev = dev_get_drvdata(dev);
3203         struct velocity_info *vptr = netdev_priv(netdev);
3204         unsigned long flags;
3205         int i;
3206 
3207         if (!netif_running(vptr->netdev))
3208                 return 0;
3209 
3210         velocity_set_power_state(vptr, PCI_D0);
3211 
3212         if (vptr->pdev) {
3213                 pci_enable_wake(vptr->pdev, PCI_D0, 0);
3214                 pci_restore_state(vptr->pdev);
3215         }
3216 
3217         mac_wol_reset(vptr->mac_regs);
3218 
3219         spin_lock_irqsave(&vptr->lock, flags);
3220         velocity_restore_context(vptr, &vptr->context);
3221         velocity_init_registers(vptr, VELOCITY_INIT_WOL);
3222         mac_disable_int(vptr->mac_regs);
3223 
3224         velocity_tx_srv(vptr);
3225 
3226         for (i = 0; i < vptr->tx.numq; i++) {
3227                 if (vptr->tx.used[i])
3228                         mac_tx_queue_wake(vptr->mac_regs, i);
3229         }
3230 
3231         mac_enable_int(vptr->mac_regs);
3232         spin_unlock_irqrestore(&vptr->lock, flags);
3233         netif_device_attach(vptr->netdev);
3234 
3235         return 0;
3236 }
3237 #endif  /* CONFIG_PM_SLEEP */
3238 
3239 static SIMPLE_DEV_PM_OPS(velocity_pm_ops, velocity_suspend, velocity_resume);
3240 
3241 /*
3242  *      Definition for our device driver. The PCI layer interface
3243  *      uses this to handle all our card discover and plugging
3244  */
3245 static struct pci_driver velocity_pci_driver = {
3246         .name           = VELOCITY_NAME,
3247         .id_table       = velocity_pci_id_table,
3248         .probe          = velocity_pci_probe,
3249         .remove         = velocity_pci_remove,
3250         .driver = {
3251                 .pm = &velocity_pm_ops,
3252         },
3253 };
3254 
3255 static struct platform_driver velocity_platform_driver = {
3256         .probe          = velocity_platform_probe,
3257         .remove         = velocity_platform_remove,
3258         .driver = {
3259                 .name = "via-velocity",
3260                 .of_match_table = velocity_of_ids,
3261                 .pm = &velocity_pm_ops,
3262         },
3263 };
3264 
3265 /**
3266  *      velocity_ethtool_up     -       pre hook for ethtool
3267  *      @dev: network device
3268  *
3269  *      Called before an ethtool operation. We need to make sure the
3270  *      chip is out of D3 state before we poke at it.
3271  */
3272 static int velocity_ethtool_up(struct net_device *dev)
3273 {
3274         struct velocity_info *vptr = netdev_priv(dev);
3275         if (!netif_running(dev))
3276                 velocity_set_power_state(vptr, PCI_D0);
3277         return 0;
3278 }
3279 
3280 /**
3281  *      velocity_ethtool_down   -       post hook for ethtool
3282  *      @dev: network device
3283  *
3284  *      Called after an ethtool operation. Restore the chip back to D3
3285  *      state if it isn't running.
3286  */
3287 static void velocity_ethtool_down(struct net_device *dev)
3288 {
3289         struct velocity_info *vptr = netdev_priv(dev);
3290         if (!netif_running(dev))
3291                 velocity_set_power_state(vptr, PCI_D3hot);
3292 }
3293 
3294 static int velocity_get_settings(struct net_device *dev,
3295                                  struct ethtool_cmd *cmd)
3296 {
3297         struct velocity_info *vptr = netdev_priv(dev);
3298         struct mac_regs __iomem *regs = vptr->mac_regs;
3299         u32 status;
3300         status = check_connection_type(vptr->mac_regs);
3301 
3302         cmd->supported = SUPPORTED_TP |
3303                         SUPPORTED_Autoneg |
3304                         SUPPORTED_10baseT_Half |
3305                         SUPPORTED_10baseT_Full |
3306                         SUPPORTED_100baseT_Half |
3307                         SUPPORTED_100baseT_Full |
3308                         SUPPORTED_1000baseT_Half |
3309                         SUPPORTED_1000baseT_Full;
3310 
3311         cmd->advertising = ADVERTISED_TP | ADVERTISED_Autoneg;
3312         if (vptr->options.spd_dpx == SPD_DPX_AUTO) {
3313                 cmd->advertising |=
3314                         ADVERTISED_10baseT_Half |
3315                         ADVERTISED_10baseT_Full |
3316                         ADVERTISED_100baseT_Half |
3317                         ADVERTISED_100baseT_Full |
3318                         ADVERTISED_1000baseT_Half |
3319                         ADVERTISED_1000baseT_Full;
3320         } else {
3321                 switch (vptr->options.spd_dpx) {
3322                 case SPD_DPX_1000_FULL:
3323                         cmd->advertising |= ADVERTISED_1000baseT_Full;
3324                         break;
3325                 case SPD_DPX_100_HALF:
3326                         cmd->advertising |= ADVERTISED_100baseT_Half;
3327                         break;
3328                 case SPD_DPX_100_FULL:
3329                         cmd->advertising |= ADVERTISED_100baseT_Full;
3330                         break;
3331                 case SPD_DPX_10_HALF:
3332                         cmd->advertising |= ADVERTISED_10baseT_Half;
3333                         break;
3334                 case SPD_DPX_10_FULL:
3335                         cmd->advertising |= ADVERTISED_10baseT_Full;
3336                         break;
3337                 default:
3338                         break;
3339                 }
3340         }
3341 
3342         if (status & VELOCITY_SPEED_1000)
3343                 ethtool_cmd_speed_set(cmd, SPEED_1000);
3344         else if (status & VELOCITY_SPEED_100)
3345                 ethtool_cmd_speed_set(cmd, SPEED_100);
3346         else
3347                 ethtool_cmd_speed_set(cmd, SPEED_10);
3348 
3349         cmd->autoneg = (status & VELOCITY_AUTONEG_ENABLE) ? AUTONEG_ENABLE : AUTONEG_DISABLE;
3350         cmd->port = PORT_TP;
3351         cmd->transceiver = XCVR_INTERNAL;
3352         cmd->phy_address = readb(&regs->MIIADR) & 0x1F;
3353 
3354         if (status & VELOCITY_DUPLEX_FULL)
3355                 cmd->duplex = DUPLEX_FULL;
3356         else
3357                 cmd->duplex = DUPLEX_HALF;
3358 
3359         return 0;
3360 }
3361 
3362 static int velocity_set_settings(struct net_device *dev,
3363                                  struct ethtool_cmd *cmd)
3364 {
3365         struct velocity_info *vptr = netdev_priv(dev);
3366         u32 speed = ethtool_cmd_speed(cmd);
3367         u32 curr_status;
3368         u32 new_status = 0;
3369         int ret = 0;
3370 
3371         curr_status = check_connection_type(vptr->mac_regs);
3372         curr_status &= (~VELOCITY_LINK_FAIL);
3373 
3374         new_status |= ((cmd->autoneg) ? VELOCITY_AUTONEG_ENABLE : 0);
3375         new_status |= ((speed == SPEED_1000) ? VELOCITY_SPEED_1000 : 0);
3376         new_status |= ((speed == SPEED_100) ? VELOCITY_SPEED_100 : 0);
3377         new_status |= ((speed == SPEED_10) ? VELOCITY_SPEED_10 : 0);
3378         new_status |= ((cmd->duplex == DUPLEX_FULL) ? VELOCITY_DUPLEX_FULL : 0);
3379 
3380         if ((new_status & VELOCITY_AUTONEG_ENABLE) &&
3381             (new_status != (curr_status | VELOCITY_AUTONEG_ENABLE))) {
3382                 ret = -EINVAL;
3383         } else {
3384                 enum speed_opt spd_dpx;
3385 
3386                 if (new_status & VELOCITY_AUTONEG_ENABLE)
3387                         spd_dpx = SPD_DPX_AUTO;
3388                 else if ((new_status & VELOCITY_SPEED_1000) &&
3389                          (new_status & VELOCITY_DUPLEX_FULL)) {
3390                         spd_dpx = SPD_DPX_1000_FULL;
3391                 } else if (new_status & VELOCITY_SPEED_100)
3392                         spd_dpx = (new_status & VELOCITY_DUPLEX_FULL) ?
3393                                 SPD_DPX_100_FULL : SPD_DPX_100_HALF;
3394                 else if (new_status & VELOCITY_SPEED_10)
3395                         spd_dpx = (new_status & VELOCITY_DUPLEX_FULL) ?
3396                                 SPD_DPX_10_FULL : SPD_DPX_10_HALF;
3397                 else
3398                         return -EOPNOTSUPP;
3399 
3400                 vptr->options.spd_dpx = spd_dpx;
3401 
3402                 velocity_set_media_mode(vptr, new_status);
3403         }
3404 
3405         return ret;
3406 }
3407 
3408 static void velocity_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
3409 {
3410         struct velocity_info *vptr = netdev_priv(dev);
3411 
3412         strlcpy(info->driver, VELOCITY_NAME, sizeof(info->driver));
3413         strlcpy(info->version, VELOCITY_VERSION, sizeof(info->version));
3414         if (vptr->pdev)
3415                 strlcpy(info->bus_info, pci_name(vptr->pdev),
3416                                                 sizeof(info->bus_info));
3417         else
3418                 strlcpy(info->bus_info, "platform", sizeof(info->bus_info));
3419 }
3420 
3421 static void velocity_ethtool_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
3422 {
3423         struct velocity_info *vptr = netdev_priv(dev);
3424         wol->supported = WAKE_PHY | WAKE_MAGIC | WAKE_UCAST | WAKE_ARP;
3425         wol->wolopts |= WAKE_MAGIC;
3426         /*
3427            if (vptr->wol_opts & VELOCITY_WOL_PHY)
3428                    wol.wolopts|=WAKE_PHY;
3429                          */
3430         if (vptr->wol_opts & VELOCITY_WOL_UCAST)
3431                 wol->wolopts |= WAKE_UCAST;
3432         if (vptr->wol_opts & VELOCITY_WOL_ARP)
3433                 wol->wolopts |= WAKE_ARP;
3434         memcpy(&wol->sopass, vptr->wol_passwd, 6);
3435 }
3436 
3437 static int velocity_ethtool_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
3438 {
3439         struct velocity_info *vptr = netdev_priv(dev);
3440 
3441         if (!(wol->wolopts & (WAKE_PHY | WAKE_MAGIC | WAKE_UCAST | WAKE_ARP)))
3442                 return -EFAULT;
3443         vptr->wol_opts = VELOCITY_WOL_MAGIC;
3444 
3445         /*
3446            if (wol.wolopts & WAKE_PHY) {
3447            vptr->wol_opts|=VELOCITY_WOL_PHY;
3448            vptr->flags |=VELOCITY_FLAGS_WOL_ENABLED;
3449            }
3450          */
3451 
3452         if (wol->wolopts & WAKE_MAGIC) {
3453                 vptr->wol_opts |= VELOCITY_WOL_MAGIC;
3454                 vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
3455         }
3456         if (wol->wolopts & WAKE_UCAST) {
3457                 vptr->wol_opts |= VELOCITY_WOL_UCAST;
3458                 vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
3459         }
3460         if (wol->wolopts & WAKE_ARP) {
3461                 vptr->wol_opts |= VELOCITY_WOL_ARP;
3462                 vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
3463         }
3464         memcpy(vptr->wol_passwd, wol->sopass, 6);
3465         return 0;
3466 }
3467 
3468 static u32 velocity_get_msglevel(struct net_device *dev)
3469 {
3470         return msglevel;
3471 }
3472 
3473 static void velocity_set_msglevel(struct net_device *dev, u32 value)
3474 {
3475          msglevel = value;
3476 }
3477 
3478 static int get_pending_timer_val(int val)
3479 {
3480         int mult_bits = val >> 6;
3481         int mult = 1;
3482 
3483         switch (mult_bits)
3484         {
3485         case 1:
3486                 mult = 4; break;
3487         case 2:
3488                 mult = 16; break;
3489         case 3:
3490                 mult = 64; break;
3491         case 0:
3492         default:
3493                 break;
3494         }
3495 
3496         return (val & 0x3f) * mult;
3497 }
3498 
3499 static void set_pending_timer_val(int *val, u32 us)
3500 {
3501         u8 mult = 0;
3502         u8 shift = 0;
3503 
3504         if (us >= 0x3f) {
3505                 mult = 1; /* mult with 4 */
3506                 shift = 2;
3507         }
3508         if (us >= 0x3f * 4) {
3509                 mult = 2; /* mult with 16 */
3510                 shift = 4;
3511         }
3512         if (us >= 0x3f * 16) {
3513                 mult = 3; /* mult with 64 */
3514                 shift = 6;
3515         }
3516 
3517         *val = (mult << 6) | ((us >> shift) & 0x3f);
3518 }
3519 
3520 
3521 static int velocity_get_coalesce(struct net_device *dev,
3522                 struct ethtool_coalesce *ecmd)
3523 {
3524         struct velocity_info *vptr = netdev_priv(dev);
3525 
3526         ecmd->tx_max_coalesced_frames = vptr->options.tx_intsup;
3527         ecmd->rx_max_coalesced_frames = vptr->options.rx_intsup;
3528 
3529         ecmd->rx_coalesce_usecs = get_pending_timer_val(vptr->options.rxqueue_timer);
3530         ecmd->tx_coalesce_usecs = get_pending_timer_val(vptr->options.txqueue_timer);
3531 
3532         return 0;
3533 }
3534 
3535 static int velocity_set_coalesce(struct net_device *dev,
3536                 struct ethtool_coalesce *ecmd)
3537 {
3538         struct velocity_info *vptr = netdev_priv(dev);
3539         int max_us = 0x3f * 64;
3540         unsigned long flags;
3541 
3542         /* 6 bits of  */
3543         if (ecmd->tx_coalesce_usecs > max_us)
3544                 return -EINVAL;
3545         if (ecmd->rx_coalesce_usecs > max_us)
3546                 return -EINVAL;
3547 
3548         if (ecmd->tx_max_coalesced_frames > 0xff)
3549                 return -EINVAL;
3550         if (ecmd->rx_max_coalesced_frames > 0xff)
3551                 return -EINVAL;
3552 
3553         vptr->options.rx_intsup = ecmd->rx_max_coalesced_frames;
3554         vptr->options.tx_intsup = ecmd->tx_max_coalesced_frames;
3555 
3556         set_pending_timer_val(&vptr->options.rxqueue_timer,
3557                         ecmd->rx_coalesce_usecs);
3558         set_pending_timer_val(&vptr->options.txqueue_timer,
3559                         ecmd->tx_coalesce_usecs);
3560 
3561         /* Setup the interrupt suppression and queue timers */
3562         spin_lock_irqsave(&vptr->lock, flags);
3563         mac_disable_int(vptr->mac_regs);
3564         setup_adaptive_interrupts(vptr);
3565         setup_queue_timers(vptr);
3566 
3567         mac_write_int_mask(vptr->int_mask, vptr->mac_regs);
3568         mac_clear_isr(vptr->mac_regs);
3569         mac_enable_int(vptr->mac_regs);
3570         spin_unlock_irqrestore(&vptr->lock, flags);
3571 
3572         return 0;
3573 }
3574 
3575 static const char velocity_gstrings[][ETH_GSTRING_LEN] = {
3576         "rx_all",
3577         "rx_ok",
3578         "tx_ok",
3579         "rx_error",
3580         "rx_runt_ok",
3581         "rx_runt_err",
3582         "rx_64",
3583         "tx_64",
3584         "rx_65_to_127",
3585         "tx_65_to_127",
3586         "rx_128_to_255",
3587         "tx_128_to_255",
3588         "rx_256_to_511",
3589         "tx_256_to_511",
3590         "rx_512_to_1023",
3591         "tx_512_to_1023",
3592         "rx_1024_to_1518",
3593         "tx_1024_to_1518",
3594         "tx_ether_collisions",
3595         "rx_crc_errors",
3596         "rx_jumbo",
3597         "tx_jumbo",
3598         "rx_mac_control_frames",
3599         "tx_mac_control_frames",
3600         "rx_frame_alignement_errors",
3601         "rx_long_ok",
3602         "rx_long_err",
3603         "tx_sqe_errors",
3604         "rx_no_buf",
3605         "rx_symbol_errors",
3606         "in_range_length_errors",
3607         "late_collisions"
3608 };
3609 
3610 static void velocity_get_strings(struct net_device *dev, u32 sset, u8 *data)
3611 {
3612         switch (sset) {
3613         case ETH_SS_STATS:
3614                 memcpy(data, *velocity_gstrings, sizeof(velocity_gstrings));
3615                 break;
3616         }
3617 }
3618 
3619 static int velocity_get_sset_count(struct net_device *dev, int sset)
3620 {
3621         switch (sset) {
3622         case ETH_SS_STATS:
3623                 return ARRAY_SIZE(velocity_gstrings);
3624         default:
3625                 return -EOPNOTSUPP;
3626         }
3627 }
3628 
3629 static void velocity_get_ethtool_stats(struct net_device *dev,
3630                                        struct ethtool_stats *stats, u64 *data)
3631 {
3632         if (netif_running(dev)) {
3633                 struct velocity_info *vptr = netdev_priv(dev);
3634                 u32 *p = vptr->mib_counter;
3635                 int i;
3636 
3637                 spin_lock_irq(&vptr->lock);
3638                 velocity_update_hw_mibs(vptr);
3639                 spin_unlock_irq(&vptr->lock);
3640 
3641                 for (i = 0; i < ARRAY_SIZE(velocity_gstrings); i++)
3642                         *data++ = *p++;
3643         }
3644 }
3645 
3646 static const struct ethtool_ops velocity_ethtool_ops = {
3647         .get_settings           = velocity_get_settings,
3648         .set_settings           = velocity_set_settings,
3649         .get_drvinfo            = velocity_get_drvinfo,
3650         .get_wol                = velocity_ethtool_get_wol,
3651         .set_wol                = velocity_ethtool_set_wol,
3652         .get_msglevel           = velocity_get_msglevel,
3653         .set_msglevel           = velocity_set_msglevel,
3654         .get_link               = velocity_get_link,
3655         .get_strings            = velocity_get_strings,
3656         .get_sset_count         = velocity_get_sset_count,
3657         .get_ethtool_stats      = velocity_get_ethtool_stats,
3658         .get_coalesce           = velocity_get_coalesce,
3659         .set_coalesce           = velocity_set_coalesce,
3660         .begin                  = velocity_ethtool_up,
3661         .complete               = velocity_ethtool_down
3662 };
3663 
3664 #if defined(CONFIG_PM) && defined(CONFIG_INET)
3665 static int velocity_netdev_event(struct notifier_block *nb, unsigned long notification, void *ptr)
3666 {
3667         struct in_ifaddr *ifa = ptr;
3668         struct net_device *dev = ifa->ifa_dev->dev;
3669 
3670         if (dev_net(dev) == &init_net &&
3671             dev->netdev_ops == &velocity_netdev_ops)
3672                 velocity_get_ip(netdev_priv(dev));
3673 
3674         return NOTIFY_DONE;
3675 }
3676 
3677 static struct notifier_block velocity_inetaddr_notifier = {
3678         .notifier_call  = velocity_netdev_event,
3679 };
3680 
3681 static void velocity_register_notifier(void)
3682 {
3683         register_inetaddr_notifier(&velocity_inetaddr_notifier);
3684 }
3685 
3686 static void velocity_unregister_notifier(void)
3687 {
3688         unregister_inetaddr_notifier(&velocity_inetaddr_notifier);
3689 }
3690 
3691 #else
3692 
3693 #define velocity_register_notifier()    do {} while (0)
3694 #define velocity_unregister_notifier()  do {} while (0)
3695 
3696 #endif  /* defined(CONFIG_PM) && defined(CONFIG_INET) */
3697 
3698 /**
3699  *      velocity_init_module    -       load time function
3700  *
3701  *      Called when the velocity module is loaded. The PCI driver
3702  *      is registered with the PCI layer, and in turn will call
3703  *      the probe functions for each velocity adapter installed
3704  *      in the system.
3705  */
3706 static int __init velocity_init_module(void)
3707 {
3708         int ret_pci, ret_platform;
3709 
3710         velocity_register_notifier();
3711 
3712         ret_pci = pci_register_driver(&velocity_pci_driver);
3713         ret_platform = platform_driver_register(&velocity_platform_driver);
3714 
3715         /* if both_registers failed, remove the notifier */
3716         if ((ret_pci < 0) && (ret_platform < 0)) {
3717                 velocity_unregister_notifier();
3718                 return ret_pci;
3719         }
3720 
3721         return 0;
3722 }
3723 
3724 /**
3725  *      velocity_cleanup        -       module unload
3726  *
3727  *      When the velocity hardware is unloaded this function is called.
3728  *      It will clean up the notifiers and the unregister the PCI
3729  *      driver interface for this hardware. This in turn cleans up
3730  *      all discovered interfaces before returning from the function
3731  */
3732 static void __exit velocity_cleanup_module(void)
3733 {
3734         velocity_unregister_notifier();
3735 
3736         pci_unregister_driver(&velocity_pci_driver);
3737         platform_driver_unregister(&velocity_platform_driver);
3738 }
3739 
3740 module_init(velocity_init_module);
3741 module_exit(velocity_cleanup_module);
3742 

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