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1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * This code is derived from the VIA reference driver (copyright message
4 * below) provided to Red Hat by VIA Networking Technologies, Inc. for
5 * addition to the Linux kernel.
6 *
7 * The code has been merged into one source file, cleaned up to follow
8 * Linux coding style, ported to the Linux 2.6 kernel tree and cleaned
9 * for 64bit hardware platforms.
10 *
11 * TODO
12 * rx_copybreak/alignment
13 * More testing
14 *
15 * The changes are (c) Copyright 2004, Red Hat Inc. <alan@lxorguk.ukuu.org.uk>
16 * Additional fixes and clean up: Francois Romieu
17 *
18 * This source has not been verified for use in safety critical systems.
19 *
20 * Please direct queries about the revamped driver to the linux-kernel
21 * list not VIA.
22 *
23 * Original code:
24 *
25 * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
26 * All rights reserved.
27 *
28 * Author: Chuang Liang-Shing, AJ Jiang
29 *
30 * Date: Jan 24, 2003
31 *
32 * MODULE_LICENSE("GPL");
33 */
34
35#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
36
37#include <linux/module.h>
38#include <linux/types.h>
39#include <linux/bitops.h>
40#include <linux/init.h>
41#include <linux/dma-mapping.h>
42#include <linux/mm.h>
43#include <linux/errno.h>
44#include <linux/ioport.h>
45#include <linux/pci.h>
46#include <linux/kernel.h>
47#include <linux/netdevice.h>
48#include <linux/etherdevice.h>
49#include <linux/skbuff.h>
50#include <linux/delay.h>
51#include <linux/timer.h>
52#include <linux/slab.h>
53#include <linux/interrupt.h>
54#include <linux/string.h>
55#include <linux/wait.h>
56#include <linux/io.h>
57#include <linux/if.h>
58#include <linux/uaccess.h>
59#include <linux/proc_fs.h>
60#include <linux/of_address.h>
61#include <linux/of_device.h>
62#include <linux/of_irq.h>
63#include <linux/inetdevice.h>
64#include <linux/platform_device.h>
65#include <linux/reboot.h>
66#include <linux/ethtool.h>
67#include <linux/mii.h>
68#include <linux/in.h>
69#include <linux/if_arp.h>
70#include <linux/if_vlan.h>
71#include <linux/ip.h>
72#include <linux/tcp.h>
73#include <linux/udp.h>
74#include <linux/crc-ccitt.h>
75#include <linux/crc32.h>
76
77#include "via-velocity.h"
78
79enum velocity_bus_type {
80 BUS_PCI,
81 BUS_PLATFORM,
82};
83
84static int velocity_nics;
85
86static void velocity_set_power_state(struct velocity_info *vptr, char state)
87{
88 void *addr = vptr->mac_regs;
89
90 if (vptr->pdev)
91 pci_set_power_state(vptr->pdev, state);
92 else
93 writeb(state, addr + 0x154);
94}
95
96/**
97 * mac_get_cam_mask - Read a CAM mask
98 * @regs: register block for this velocity
99 * @mask: buffer to store mask
100 *
101 * Fetch the mask bits of the selected CAM and store them into the
102 * provided mask buffer.
103 */
104static void mac_get_cam_mask(struct mac_regs __iomem *regs, u8 *mask)
105{
106 int i;
107
108 /* Select CAM mask */
109 BYTE_REG_BITS_SET(CAMCR_PS_CAM_MASK, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
110
111 writeb(0, ®s->CAMADDR);
112
113 /* read mask */
114 for (i = 0; i < 8; i++)
115 *mask++ = readb(&(regs->MARCAM[i]));
116
117 /* disable CAMEN */
118 writeb(0, ®s->CAMADDR);
119
120 /* Select mar */
121 BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
122}
123
124/**
125 * mac_set_cam_mask - Set a CAM mask
126 * @regs: register block for this velocity
127 * @mask: CAM mask to load
128 *
129 * Store a new mask into a CAM
130 */
131static void mac_set_cam_mask(struct mac_regs __iomem *regs, u8 *mask)
132{
133 int i;
134 /* Select CAM mask */
135 BYTE_REG_BITS_SET(CAMCR_PS_CAM_MASK, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
136
137 writeb(CAMADDR_CAMEN, ®s->CAMADDR);
138
139 for (i = 0; i < 8; i++)
140 writeb(*mask++, &(regs->MARCAM[i]));
141
142 /* disable CAMEN */
143 writeb(0, ®s->CAMADDR);
144
145 /* Select mar */
146 BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
147}
148
149static void mac_set_vlan_cam_mask(struct mac_regs __iomem *regs, u8 *mask)
150{
151 int i;
152 /* Select CAM mask */
153 BYTE_REG_BITS_SET(CAMCR_PS_CAM_MASK, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
154
155 writeb(CAMADDR_CAMEN | CAMADDR_VCAMSL, ®s->CAMADDR);
156
157 for (i = 0; i < 8; i++)
158 writeb(*mask++, &(regs->MARCAM[i]));
159
160 /* disable CAMEN */
161 writeb(0, ®s->CAMADDR);
162
163 /* Select mar */
164 BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
165}
166
167/**
168 * mac_set_cam - set CAM data
169 * @regs: register block of this velocity
170 * @idx: Cam index
171 * @addr: 2 or 6 bytes of CAM data
172 *
173 * Load an address or vlan tag into a CAM
174 */
175static void mac_set_cam(struct mac_regs __iomem *regs, int idx, const u8 *addr)
176{
177 int i;
178
179 /* Select CAM mask */
180 BYTE_REG_BITS_SET(CAMCR_PS_CAM_DATA, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
181
182 idx &= (64 - 1);
183
184 writeb(CAMADDR_CAMEN | idx, ®s->CAMADDR);
185
186 for (i = 0; i < 6; i++)
187 writeb(*addr++, &(regs->MARCAM[i]));
188
189 BYTE_REG_BITS_ON(CAMCR_CAMWR, ®s->CAMCR);
190
191 udelay(10);
192
193 writeb(0, ®s->CAMADDR);
194
195 /* Select mar */
196 BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
197}
198
199static void mac_set_vlan_cam(struct mac_regs __iomem *regs, int idx,
200 const u8 *addr)
201{
202
203 /* Select CAM mask */
204 BYTE_REG_BITS_SET(CAMCR_PS_CAM_DATA, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
205
206 idx &= (64 - 1);
207
208 writeb(CAMADDR_CAMEN | CAMADDR_VCAMSL | idx, ®s->CAMADDR);
209 writew(*((u16 *) addr), ®s->MARCAM[0]);
210
211 BYTE_REG_BITS_ON(CAMCR_CAMWR, ®s->CAMCR);
212
213 udelay(10);
214
215 writeb(0, ®s->CAMADDR);
216
217 /* Select mar */
218 BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
219}
220
221
222/**
223 * mac_wol_reset - reset WOL after exiting low power
224 * @regs: register block of this velocity
225 *
226 * Called after we drop out of wake on lan mode in order to
227 * reset the Wake on lan features. This function doesn't restore
228 * the rest of the logic from the result of sleep/wakeup
229 */
230static void mac_wol_reset(struct mac_regs __iomem *regs)
231{
232
233 /* Turn off SWPTAG right after leaving power mode */
234 BYTE_REG_BITS_OFF(STICKHW_SWPTAG, ®s->STICKHW);
235 /* clear sticky bits */
236 BYTE_REG_BITS_OFF((STICKHW_DS1 | STICKHW_DS0), ®s->STICKHW);
237
238 BYTE_REG_BITS_OFF(CHIPGCR_FCGMII, ®s->CHIPGCR);
239 BYTE_REG_BITS_OFF(CHIPGCR_FCMODE, ®s->CHIPGCR);
240 /* disable force PME-enable */
241 writeb(WOLCFG_PMEOVR, ®s->WOLCFGClr);
242 /* disable power-event config bit */
243 writew(0xFFFF, ®s->WOLCRClr);
244 /* clear power status */
245 writew(0xFFFF, ®s->WOLSRClr);
246}
247
248static const struct ethtool_ops velocity_ethtool_ops;
249
250/*
251 Define module options
252*/
253
254MODULE_AUTHOR("VIA Networking Technologies, Inc.");
255MODULE_LICENSE("GPL");
256MODULE_DESCRIPTION("VIA Networking Velocity Family Gigabit Ethernet Adapter Driver");
257
258#define VELOCITY_PARAM(N, D) \
259 static int N[MAX_UNITS] = OPTION_DEFAULT;\
260 module_param_array(N, int, NULL, 0); \
261 MODULE_PARM_DESC(N, D);
262
263#define RX_DESC_MIN 64
264#define RX_DESC_MAX 255
265#define RX_DESC_DEF 64
266VELOCITY_PARAM(RxDescriptors, "Number of receive descriptors");
267
268#define TX_DESC_MIN 16
269#define TX_DESC_MAX 256
270#define TX_DESC_DEF 64
271VELOCITY_PARAM(TxDescriptors, "Number of transmit descriptors");
272
273#define RX_THRESH_MIN 0
274#define RX_THRESH_MAX 3
275#define RX_THRESH_DEF 0
276/* rx_thresh[] is used for controlling the receive fifo threshold.
277 0: indicate the rxfifo threshold is 128 bytes.
278 1: indicate the rxfifo threshold is 512 bytes.
279 2: indicate the rxfifo threshold is 1024 bytes.
280 3: indicate the rxfifo threshold is store & forward.
281*/
282VELOCITY_PARAM(rx_thresh, "Receive fifo threshold");
283
284#define DMA_LENGTH_MIN 0
285#define DMA_LENGTH_MAX 7
286#define DMA_LENGTH_DEF 6
287
288/* DMA_length[] is used for controlling the DMA length
289 0: 8 DWORDs
290 1: 16 DWORDs
291 2: 32 DWORDs
292 3: 64 DWORDs
293 4: 128 DWORDs
294 5: 256 DWORDs
295 6: SF(flush till emply)
296 7: SF(flush till emply)
297*/
298VELOCITY_PARAM(DMA_length, "DMA length");
299
300#define IP_ALIG_DEF 0
301/* IP_byte_align[] is used for IP header DWORD byte aligned
302 0: indicate the IP header won't be DWORD byte aligned.(Default) .
303 1: indicate the IP header will be DWORD byte aligned.
304 In some environment, the IP header should be DWORD byte aligned,
305 or the packet will be droped when we receive it. (eg: IPVS)
306*/
307VELOCITY_PARAM(IP_byte_align, "Enable IP header dword aligned");
308
309#define FLOW_CNTL_DEF 1
310#define FLOW_CNTL_MIN 1
311#define FLOW_CNTL_MAX 5
312
313/* flow_control[] is used for setting the flow control ability of NIC.
314 1: hardware deafult - AUTO (default). Use Hardware default value in ANAR.
315 2: enable TX flow control.
316 3: enable RX flow control.
317 4: enable RX/TX flow control.
318 5: disable
319*/
320VELOCITY_PARAM(flow_control, "Enable flow control ability");
321
322#define MED_LNK_DEF 0
323#define MED_LNK_MIN 0
324#define MED_LNK_MAX 5
325/* speed_duplex[] is used for setting the speed and duplex mode of NIC.
326 0: indicate autonegotiation for both speed and duplex mode
327 1: indicate 100Mbps half duplex mode
328 2: indicate 100Mbps full duplex mode
329 3: indicate 10Mbps half duplex mode
330 4: indicate 10Mbps full duplex mode
331 5: indicate 1000Mbps full duplex mode
332
333 Note:
334 if EEPROM have been set to the force mode, this option is ignored
335 by driver.
336*/
337VELOCITY_PARAM(speed_duplex, "Setting the speed and duplex mode");
338
339#define WOL_OPT_DEF 0
340#define WOL_OPT_MIN 0
341#define WOL_OPT_MAX 7
342/* wol_opts[] is used for controlling wake on lan behavior.
343 0: Wake up if recevied a magic packet. (Default)
344 1: Wake up if link status is on/off.
345 2: Wake up if recevied an arp packet.
346 4: Wake up if recevied any unicast packet.
347 Those value can be sumed up to support more than one option.
348*/
349VELOCITY_PARAM(wol_opts, "Wake On Lan options");
350
351static int rx_copybreak = 200;
352module_param(rx_copybreak, int, 0644);
353MODULE_PARM_DESC(rx_copybreak, "Copy breakpoint for copy-only-tiny-frames");
354
355/*
356 * Internal board variants. At the moment we have only one
357 */
358static struct velocity_info_tbl chip_info_table[] = {
359 {CHIP_TYPE_VT6110, "VIA Networking Velocity Family Gigabit Ethernet Adapter", 1, 0x00FFFFFFUL},
360 { }
361};
362
363/*
364 * Describe the PCI device identifiers that we support in this
365 * device driver. Used for hotplug autoloading.
366 */
367
368static const struct pci_device_id velocity_pci_id_table[] = {
369 { PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_612X) },
370 { }
371};
372
373MODULE_DEVICE_TABLE(pci, velocity_pci_id_table);
374
375/**
376 * Describe the OF device identifiers that we support in this
377 * device driver. Used for devicetree nodes.
378 */
379static const struct of_device_id velocity_of_ids[] = {
380 { .compatible = "via,velocity-vt6110", .data = &chip_info_table[0] },
381 { /* Sentinel */ },
382};
383MODULE_DEVICE_TABLE(of, velocity_of_ids);
384
385/**
386 * get_chip_name - identifier to name
387 * @id: chip identifier
388 *
389 * Given a chip identifier return a suitable description. Returns
390 * a pointer a static string valid while the driver is loaded.
391 */
392static const char *get_chip_name(enum chip_type chip_id)
393{
394 int i;
395 for (i = 0; chip_info_table[i].name != NULL; i++)
396 if (chip_info_table[i].chip_id == chip_id)
397 break;
398 return chip_info_table[i].name;
399}
400
401/**
402 * velocity_set_int_opt - parser for integer options
403 * @opt: pointer to option value
404 * @val: value the user requested (or -1 for default)
405 * @min: lowest value allowed
406 * @max: highest value allowed
407 * @def: default value
408 * @name: property name
409 *
410 * Set an integer property in the module options. This function does
411 * all the verification and checking as well as reporting so that
412 * we don't duplicate code for each option.
413 */
414static void velocity_set_int_opt(int *opt, int val, int min, int max, int def,
415 char *name)
416{
417 if (val == -1)
418 *opt = def;
419 else if (val < min || val > max) {
420 pr_notice("the value of parameter %s is invalid, the valid range is (%d-%d)\n",
421 name, min, max);
422 *opt = def;
423 } else {
424 pr_info("set value of parameter %s to %d\n", name, val);
425 *opt = val;
426 }
427}
428
429/**
430 * velocity_set_bool_opt - parser for boolean options
431 * @opt: pointer to option value
432 * @val: value the user requested (or -1 for default)
433 * @def: default value (yes/no)
434 * @flag: numeric value to set for true.
435 * @name: property name
436 *
437 * Set a boolean property in the module options. This function does
438 * all the verification and checking as well as reporting so that
439 * we don't duplicate code for each option.
440 */
441static void velocity_set_bool_opt(u32 *opt, int val, int def, u32 flag,
442 char *name)
443{
444 (*opt) &= (~flag);
445 if (val == -1)
446 *opt |= (def ? flag : 0);
447 else if (val < 0 || val > 1) {
448 pr_notice("the value of parameter %s is invalid, the valid range is (%d-%d)\n",
449 name, 0, 1);
450 *opt |= (def ? flag : 0);
451 } else {
452 pr_info("set parameter %s to %s\n",
453 name, val ? "TRUE" : "FALSE");
454 *opt |= (val ? flag : 0);
455 }
456}
457
458/**
459 * velocity_get_options - set options on device
460 * @opts: option structure for the device
461 * @index: index of option to use in module options array
462 *
463 * Turn the module and command options into a single structure
464 * for the current device
465 */
466static void velocity_get_options(struct velocity_opt *opts, int index)
467{
468
469 velocity_set_int_opt(&opts->rx_thresh, rx_thresh[index],
470 RX_THRESH_MIN, RX_THRESH_MAX, RX_THRESH_DEF,
471 "rx_thresh");
472 velocity_set_int_opt(&opts->DMA_length, DMA_length[index],
473 DMA_LENGTH_MIN, DMA_LENGTH_MAX, DMA_LENGTH_DEF,
474 "DMA_length");
475 velocity_set_int_opt(&opts->numrx, RxDescriptors[index],
476 RX_DESC_MIN, RX_DESC_MAX, RX_DESC_DEF,
477 "RxDescriptors");
478 velocity_set_int_opt(&opts->numtx, TxDescriptors[index],
479 TX_DESC_MIN, TX_DESC_MAX, TX_DESC_DEF,
480 "TxDescriptors");
481
482 velocity_set_int_opt(&opts->flow_cntl, flow_control[index],
483 FLOW_CNTL_MIN, FLOW_CNTL_MAX, FLOW_CNTL_DEF,
484 "flow_control");
485 velocity_set_bool_opt(&opts->flags, IP_byte_align[index],
486 IP_ALIG_DEF, VELOCITY_FLAGS_IP_ALIGN,
487 "IP_byte_align");
488 velocity_set_int_opt((int *) &opts->spd_dpx, speed_duplex[index],
489 MED_LNK_MIN, MED_LNK_MAX, MED_LNK_DEF,
490 "Media link mode");
491 velocity_set_int_opt(&opts->wol_opts, wol_opts[index],
492 WOL_OPT_MIN, WOL_OPT_MAX, WOL_OPT_DEF,
493 "Wake On Lan options");
494 opts->numrx = (opts->numrx & ~3);
495}
496
497/**
498 * velocity_init_cam_filter - initialise CAM
499 * @vptr: velocity to program
500 *
501 * Initialize the content addressable memory used for filters. Load
502 * appropriately according to the presence of VLAN
503 */
504static void velocity_init_cam_filter(struct velocity_info *vptr)
505{
506 struct mac_regs __iomem *regs = vptr->mac_regs;
507 unsigned int vid, i = 0;
508
509 /* Turn on MCFG_PQEN, turn off MCFG_RTGOPT */
510 WORD_REG_BITS_SET(MCFG_PQEN, MCFG_RTGOPT, ®s->MCFG);
511 WORD_REG_BITS_ON(MCFG_VIDFR, ®s->MCFG);
512
513 /* Disable all CAMs */
514 memset(vptr->vCAMmask, 0, sizeof(u8) * 8);
515 memset(vptr->mCAMmask, 0, sizeof(u8) * 8);
516 mac_set_vlan_cam_mask(regs, vptr->vCAMmask);
517 mac_set_cam_mask(regs, vptr->mCAMmask);
518
519 /* Enable VCAMs */
520 for_each_set_bit(vid, vptr->active_vlans, VLAN_N_VID) {
521 mac_set_vlan_cam(regs, i, (u8 *) &vid);
522 vptr->vCAMmask[i / 8] |= 0x1 << (i % 8);
523 if (++i >= VCAM_SIZE)
524 break;
525 }
526 mac_set_vlan_cam_mask(regs, vptr->vCAMmask);
527}
528
529static int velocity_vlan_rx_add_vid(struct net_device *dev,
530 __be16 proto, u16 vid)
531{
532 struct velocity_info *vptr = netdev_priv(dev);
533
534 spin_lock_irq(&vptr->lock);
535 set_bit(vid, vptr->active_vlans);
536 velocity_init_cam_filter(vptr);
537 spin_unlock_irq(&vptr->lock);
538 return 0;
539}
540
541static int velocity_vlan_rx_kill_vid(struct net_device *dev,
542 __be16 proto, u16 vid)
543{
544 struct velocity_info *vptr = netdev_priv(dev);
545
546 spin_lock_irq(&vptr->lock);
547 clear_bit(vid, vptr->active_vlans);
548 velocity_init_cam_filter(vptr);
549 spin_unlock_irq(&vptr->lock);
550 return 0;
551}
552
553static void velocity_init_rx_ring_indexes(struct velocity_info *vptr)
554{
555 vptr->rx.dirty = vptr->rx.filled = vptr->rx.curr = 0;
556}
557
558/**
559 * velocity_rx_reset - handle a receive reset
560 * @vptr: velocity we are resetting
561 *
562 * Reset the ownership and status for the receive ring side.
563 * Hand all the receive queue to the NIC.
564 */
565static void velocity_rx_reset(struct velocity_info *vptr)
566{
567
568 struct mac_regs __iomem *regs = vptr->mac_regs;
569 int i;
570
571 velocity_init_rx_ring_indexes(vptr);
572
573 /*
574 * Init state, all RD entries belong to the NIC
575 */
576 for (i = 0; i < vptr->options.numrx; ++i)
577 vptr->rx.ring[i].rdesc0.len |= OWNED_BY_NIC;
578
579 writew(vptr->options.numrx, ®s->RBRDU);
580 writel(vptr->rx.pool_dma, ®s->RDBaseLo);
581 writew(0, ®s->RDIdx);
582 writew(vptr->options.numrx - 1, ®s->RDCSize);
583}
584
585/**
586 * velocity_get_opt_media_mode - get media selection
587 * @vptr: velocity adapter
588 *
589 * Get the media mode stored in EEPROM or module options and load
590 * mii_status accordingly. The requested link state information
591 * is also returned.
592 */
593static u32 velocity_get_opt_media_mode(struct velocity_info *vptr)
594{
595 u32 status = 0;
596
597 switch (vptr->options.spd_dpx) {
598 case SPD_DPX_AUTO:
599 status = VELOCITY_AUTONEG_ENABLE;
600 break;
601 case SPD_DPX_100_FULL:
602 status = VELOCITY_SPEED_100 | VELOCITY_DUPLEX_FULL;
603 break;
604 case SPD_DPX_10_FULL:
605 status = VELOCITY_SPEED_10 | VELOCITY_DUPLEX_FULL;
606 break;
607 case SPD_DPX_100_HALF:
608 status = VELOCITY_SPEED_100;
609 break;
610 case SPD_DPX_10_HALF:
611 status = VELOCITY_SPEED_10;
612 break;
613 case SPD_DPX_1000_FULL:
614 status = VELOCITY_SPEED_1000 | VELOCITY_DUPLEX_FULL;
615 break;
616 }
617 vptr->mii_status = status;
618 return status;
619}
620
621/**
622 * safe_disable_mii_autopoll - autopoll off
623 * @regs: velocity registers
624 *
625 * Turn off the autopoll and wait for it to disable on the chip
626 */
627static void safe_disable_mii_autopoll(struct mac_regs __iomem *regs)
628{
629 u16 ww;
630
631 /* turn off MAUTO */
632 writeb(0, ®s->MIICR);
633 for (ww = 0; ww < W_MAX_TIMEOUT; ww++) {
634 udelay(1);
635 if (BYTE_REG_BITS_IS_ON(MIISR_MIDLE, ®s->MIISR))
636 break;
637 }
638}
639
640/**
641 * enable_mii_autopoll - turn on autopolling
642 * @regs: velocity registers
643 *
644 * Enable the MII link status autopoll feature on the Velocity
645 * hardware. Wait for it to enable.
646 */
647static void enable_mii_autopoll(struct mac_regs __iomem *regs)
648{
649 int ii;
650
651 writeb(0, &(regs->MIICR));
652 writeb(MIIADR_SWMPL, ®s->MIIADR);
653
654 for (ii = 0; ii < W_MAX_TIMEOUT; ii++) {
655 udelay(1);
656 if (BYTE_REG_BITS_IS_ON(MIISR_MIDLE, ®s->MIISR))
657 break;
658 }
659
660 writeb(MIICR_MAUTO, ®s->MIICR);
661
662 for (ii = 0; ii < W_MAX_TIMEOUT; ii++) {
663 udelay(1);
664 if (!BYTE_REG_BITS_IS_ON(MIISR_MIDLE, ®s->MIISR))
665 break;
666 }
667
668}
669
670/**
671 * velocity_mii_read - read MII data
672 * @regs: velocity registers
673 * @index: MII register index
674 * @data: buffer for received data
675 *
676 * Perform a single read of an MII 16bit register. Returns zero
677 * on success or -ETIMEDOUT if the PHY did not respond.
678 */
679static int velocity_mii_read(struct mac_regs __iomem *regs, u8 index, u16 *data)
680{
681 u16 ww;
682
683 /*
684 * Disable MIICR_MAUTO, so that mii addr can be set normally
685 */
686 safe_disable_mii_autopoll(regs);
687
688 writeb(index, ®s->MIIADR);
689
690 BYTE_REG_BITS_ON(MIICR_RCMD, ®s->MIICR);
691
692 for (ww = 0; ww < W_MAX_TIMEOUT; ww++) {
693 if (!(readb(®s->MIICR) & MIICR_RCMD))
694 break;
695 }
696
697 *data = readw(®s->MIIDATA);
698
699 enable_mii_autopoll(regs);
700 if (ww == W_MAX_TIMEOUT)
701 return -ETIMEDOUT;
702 return 0;
703}
704
705/**
706 * mii_check_media_mode - check media state
707 * @regs: velocity registers
708 *
709 * Check the current MII status and determine the link status
710 * accordingly
711 */
712static u32 mii_check_media_mode(struct mac_regs __iomem *regs)
713{
714 u32 status = 0;
715 u16 ANAR;
716
717 if (!MII_REG_BITS_IS_ON(BMSR_LSTATUS, MII_BMSR, regs))
718 status |= VELOCITY_LINK_FAIL;
719
720 if (MII_REG_BITS_IS_ON(ADVERTISE_1000FULL, MII_CTRL1000, regs))
721 status |= VELOCITY_SPEED_1000 | VELOCITY_DUPLEX_FULL;
722 else if (MII_REG_BITS_IS_ON(ADVERTISE_1000HALF, MII_CTRL1000, regs))
723 status |= (VELOCITY_SPEED_1000);
724 else {
725 velocity_mii_read(regs, MII_ADVERTISE, &ANAR);
726 if (ANAR & ADVERTISE_100FULL)
727 status |= (VELOCITY_SPEED_100 | VELOCITY_DUPLEX_FULL);
728 else if (ANAR & ADVERTISE_100HALF)
729 status |= VELOCITY_SPEED_100;
730 else if (ANAR & ADVERTISE_10FULL)
731 status |= (VELOCITY_SPEED_10 | VELOCITY_DUPLEX_FULL);
732 else
733 status |= (VELOCITY_SPEED_10);
734 }
735
736 if (MII_REG_BITS_IS_ON(BMCR_ANENABLE, MII_BMCR, regs)) {
737 velocity_mii_read(regs, MII_ADVERTISE, &ANAR);
738 if ((ANAR & (ADVERTISE_100FULL | ADVERTISE_100HALF | ADVERTISE_10FULL | ADVERTISE_10HALF))
739 == (ADVERTISE_100FULL | ADVERTISE_100HALF | ADVERTISE_10FULL | ADVERTISE_10HALF)) {
740 if (MII_REG_BITS_IS_ON(ADVERTISE_1000HALF | ADVERTISE_1000FULL, MII_CTRL1000, regs))
741 status |= VELOCITY_AUTONEG_ENABLE;
742 }
743 }
744
745 return status;
746}
747
748/**
749 * velocity_mii_write - write MII data
750 * @regs: velocity registers
751 * @index: MII register index
752 * @data: 16bit data for the MII register
753 *
754 * Perform a single write to an MII 16bit register. Returns zero
755 * on success or -ETIMEDOUT if the PHY did not respond.
756 */
757static int velocity_mii_write(struct mac_regs __iomem *regs, u8 mii_addr, u16 data)
758{
759 u16 ww;
760
761 /*
762 * Disable MIICR_MAUTO, so that mii addr can be set normally
763 */
764 safe_disable_mii_autopoll(regs);
765
766 /* MII reg offset */
767 writeb(mii_addr, ®s->MIIADR);
768 /* set MII data */
769 writew(data, ®s->MIIDATA);
770
771 /* turn on MIICR_WCMD */
772 BYTE_REG_BITS_ON(MIICR_WCMD, ®s->MIICR);
773
774 /* W_MAX_TIMEOUT is the timeout period */
775 for (ww = 0; ww < W_MAX_TIMEOUT; ww++) {
776 udelay(5);
777 if (!(readb(®s->MIICR) & MIICR_WCMD))
778 break;
779 }
780 enable_mii_autopoll(regs);
781
782 if (ww == W_MAX_TIMEOUT)
783 return -ETIMEDOUT;
784 return 0;
785}
786
787/**
788 * set_mii_flow_control - flow control setup
789 * @vptr: velocity interface
790 *
791 * Set up the flow control on this interface according to
792 * the supplied user/eeprom options.
793 */
794static void set_mii_flow_control(struct velocity_info *vptr)
795{
796 /*Enable or Disable PAUSE in ANAR */
797 switch (vptr->options.flow_cntl) {
798 case FLOW_CNTL_TX:
799 MII_REG_BITS_OFF(ADVERTISE_PAUSE_CAP, MII_ADVERTISE, vptr->mac_regs);
800 MII_REG_BITS_ON(ADVERTISE_PAUSE_ASYM, MII_ADVERTISE, vptr->mac_regs);
801 break;
802
803 case FLOW_CNTL_RX:
804 MII_REG_BITS_ON(ADVERTISE_PAUSE_CAP, MII_ADVERTISE, vptr->mac_regs);
805 MII_REG_BITS_ON(ADVERTISE_PAUSE_ASYM, MII_ADVERTISE, vptr->mac_regs);
806 break;
807
808 case FLOW_CNTL_TX_RX:
809 MII_REG_BITS_ON(ADVERTISE_PAUSE_CAP, MII_ADVERTISE, vptr->mac_regs);
810 MII_REG_BITS_OFF(ADVERTISE_PAUSE_ASYM, MII_ADVERTISE, vptr->mac_regs);
811 break;
812
813 case FLOW_CNTL_DISABLE:
814 MII_REG_BITS_OFF(ADVERTISE_PAUSE_CAP, MII_ADVERTISE, vptr->mac_regs);
815 MII_REG_BITS_OFF(ADVERTISE_PAUSE_ASYM, MII_ADVERTISE, vptr->mac_regs);
816 break;
817 default:
818 break;
819 }
820}
821
822/**
823 * mii_set_auto_on - autonegotiate on
824 * @vptr: velocity
825 *
826 * Enable autonegotation on this interface
827 */
828static void mii_set_auto_on(struct velocity_info *vptr)
829{
830 if (MII_REG_BITS_IS_ON(BMCR_ANENABLE, MII_BMCR, vptr->mac_regs))
831 MII_REG_BITS_ON(BMCR_ANRESTART, MII_BMCR, vptr->mac_regs);
832 else
833 MII_REG_BITS_ON(BMCR_ANENABLE, MII_BMCR, vptr->mac_regs);
834}
835
836static u32 check_connection_type(struct mac_regs __iomem *regs)
837{
838 u32 status = 0;
839 u8 PHYSR0;
840 u16 ANAR;
841 PHYSR0 = readb(®s->PHYSR0);
842
843 /*
844 if (!(PHYSR0 & PHYSR0_LINKGD))
845 status|=VELOCITY_LINK_FAIL;
846 */
847
848 if (PHYSR0 & PHYSR0_FDPX)
849 status |= VELOCITY_DUPLEX_FULL;
850
851 if (PHYSR0 & PHYSR0_SPDG)
852 status |= VELOCITY_SPEED_1000;
853 else if (PHYSR0 & PHYSR0_SPD10)
854 status |= VELOCITY_SPEED_10;
855 else
856 status |= VELOCITY_SPEED_100;
857
858 if (MII_REG_BITS_IS_ON(BMCR_ANENABLE, MII_BMCR, regs)) {
859 velocity_mii_read(regs, MII_ADVERTISE, &ANAR);
860 if ((ANAR & (ADVERTISE_100FULL | ADVERTISE_100HALF | ADVERTISE_10FULL | ADVERTISE_10HALF))
861 == (ADVERTISE_100FULL | ADVERTISE_100HALF | ADVERTISE_10FULL | ADVERTISE_10HALF)) {
862 if (MII_REG_BITS_IS_ON(ADVERTISE_1000HALF | ADVERTISE_1000FULL, MII_CTRL1000, regs))
863 status |= VELOCITY_AUTONEG_ENABLE;
864 }
865 }
866
867 return status;
868}
869
870/**
871 * velocity_set_media_mode - set media mode
872 * @mii_status: old MII link state
873 *
874 * Check the media link state and configure the flow control
875 * PHY and also velocity hardware setup accordingly. In particular
876 * we need to set up CD polling and frame bursting.
877 */
878static int velocity_set_media_mode(struct velocity_info *vptr, u32 mii_status)
879{
880 u32 curr_status;
881 struct mac_regs __iomem *regs = vptr->mac_regs;
882
883 vptr->mii_status = mii_check_media_mode(vptr->mac_regs);
884 curr_status = vptr->mii_status & (~VELOCITY_LINK_FAIL);
885
886 /* Set mii link status */
887 set_mii_flow_control(vptr);
888
889 /*
890 Check if new status is consistent with current status
891 if (((mii_status & curr_status) & VELOCITY_AUTONEG_ENABLE) ||
892 (mii_status==curr_status)) {
893 vptr->mii_status=mii_check_media_mode(vptr->mac_regs);
894 vptr->mii_status=check_connection_type(vptr->mac_regs);
895 netdev_info(vptr->netdev, "Velocity link no change\n");
896 return 0;
897 }
898 */
899
900 if (PHYID_GET_PHY_ID(vptr->phy_id) == PHYID_CICADA_CS8201)
901 MII_REG_BITS_ON(AUXCR_MDPPS, MII_NCONFIG, vptr->mac_regs);
902
903 /*
904 * If connection type is AUTO
905 */
906 if (mii_status & VELOCITY_AUTONEG_ENABLE) {
907 netdev_info(vptr->netdev, "Velocity is in AUTO mode\n");
908 /* clear force MAC mode bit */
909 BYTE_REG_BITS_OFF(CHIPGCR_FCMODE, ®s->CHIPGCR);
910 /* set duplex mode of MAC according to duplex mode of MII */
911 MII_REG_BITS_ON(ADVERTISE_100FULL | ADVERTISE_100HALF | ADVERTISE_10FULL | ADVERTISE_10HALF, MII_ADVERTISE, vptr->mac_regs);
912 MII_REG_BITS_ON(ADVERTISE_1000FULL | ADVERTISE_1000HALF, MII_CTRL1000, vptr->mac_regs);
913 MII_REG_BITS_ON(BMCR_SPEED1000, MII_BMCR, vptr->mac_regs);
914
915 /* enable AUTO-NEGO mode */
916 mii_set_auto_on(vptr);
917 } else {
918 u16 CTRL1000;
919 u16 ANAR;
920 u8 CHIPGCR;
921
922 /*
923 * 1. if it's 3119, disable frame bursting in halfduplex mode
924 * and enable it in fullduplex mode
925 * 2. set correct MII/GMII and half/full duplex mode in CHIPGCR
926 * 3. only enable CD heart beat counter in 10HD mode
927 */
928
929 /* set force MAC mode bit */
930 BYTE_REG_BITS_ON(CHIPGCR_FCMODE, ®s->CHIPGCR);
931
932 CHIPGCR = readb(®s->CHIPGCR);
933
934 if (mii_status & VELOCITY_SPEED_1000)
935 CHIPGCR |= CHIPGCR_FCGMII;
936 else
937 CHIPGCR &= ~CHIPGCR_FCGMII;
938
939 if (mii_status & VELOCITY_DUPLEX_FULL) {
940 CHIPGCR |= CHIPGCR_FCFDX;
941 writeb(CHIPGCR, ®s->CHIPGCR);
942 netdev_info(vptr->netdev,
943 "set Velocity to forced full mode\n");
944 if (vptr->rev_id < REV_ID_VT3216_A0)
945 BYTE_REG_BITS_OFF(TCR_TB2BDIS, ®s->TCR);
946 } else {
947 CHIPGCR &= ~CHIPGCR_FCFDX;
948 netdev_info(vptr->netdev,
949 "set Velocity to forced half mode\n");
950 writeb(CHIPGCR, ®s->CHIPGCR);
951 if (vptr->rev_id < REV_ID_VT3216_A0)
952 BYTE_REG_BITS_ON(TCR_TB2BDIS, ®s->TCR);
953 }
954
955 velocity_mii_read(vptr->mac_regs, MII_CTRL1000, &CTRL1000);
956 CTRL1000 &= ~(ADVERTISE_1000FULL | ADVERTISE_1000HALF);
957 if ((mii_status & VELOCITY_SPEED_1000) &&
958 (mii_status & VELOCITY_DUPLEX_FULL)) {
959 CTRL1000 |= ADVERTISE_1000FULL;
960 }
961 velocity_mii_write(vptr->mac_regs, MII_CTRL1000, CTRL1000);
962
963 if (!(mii_status & VELOCITY_DUPLEX_FULL) && (mii_status & VELOCITY_SPEED_10))
964 BYTE_REG_BITS_OFF(TESTCFG_HBDIS, ®s->TESTCFG);
965 else
966 BYTE_REG_BITS_ON(TESTCFG_HBDIS, ®s->TESTCFG);
967
968 /* MII_REG_BITS_OFF(BMCR_SPEED1000, MII_BMCR, vptr->mac_regs); */
969 velocity_mii_read(vptr->mac_regs, MII_ADVERTISE, &ANAR);
970 ANAR &= (~(ADVERTISE_100FULL | ADVERTISE_100HALF | ADVERTISE_10FULL | ADVERTISE_10HALF));
971 if (mii_status & VELOCITY_SPEED_100) {
972 if (mii_status & VELOCITY_DUPLEX_FULL)
973 ANAR |= ADVERTISE_100FULL;
974 else
975 ANAR |= ADVERTISE_100HALF;
976 } else if (mii_status & VELOCITY_SPEED_10) {
977 if (mii_status & VELOCITY_DUPLEX_FULL)
978 ANAR |= ADVERTISE_10FULL;
979 else
980 ANAR |= ADVERTISE_10HALF;
981 }
982 velocity_mii_write(vptr->mac_regs, MII_ADVERTISE, ANAR);
983 /* enable AUTO-NEGO mode */
984 mii_set_auto_on(vptr);
985 /* MII_REG_BITS_ON(BMCR_ANENABLE, MII_BMCR, vptr->mac_regs); */
986 }
987 /* vptr->mii_status=mii_check_media_mode(vptr->mac_regs); */
988 /* vptr->mii_status=check_connection_type(vptr->mac_regs); */
989 return VELOCITY_LINK_CHANGE;
990}
991
992/**
993 * velocity_print_link_status - link status reporting
994 * @vptr: velocity to report on
995 *
996 * Turn the link status of the velocity card into a kernel log
997 * description of the new link state, detailing speed and duplex
998 * status
999 */
1000static void velocity_print_link_status(struct velocity_info *vptr)
1001{
1002 const char *link;
1003 const char *speed;
1004 const char *duplex;
1005
1006 if (vptr->mii_status & VELOCITY_LINK_FAIL) {
1007 netdev_notice(vptr->netdev, "failed to detect cable link\n");
1008 return;
1009 }
1010
1011 if (vptr->options.spd_dpx == SPD_DPX_AUTO) {
1012 link = "auto-negotiation";
1013
1014 if (vptr->mii_status & VELOCITY_SPEED_1000)
1015 speed = "1000";
1016 else if (vptr->mii_status & VELOCITY_SPEED_100)
1017 speed = "100";
1018 else
1019 speed = "10";
1020
1021 if (vptr->mii_status & VELOCITY_DUPLEX_FULL)
1022 duplex = "full";
1023 else
1024 duplex = "half";
1025 } else {
1026 link = "forced";
1027
1028 switch (vptr->options.spd_dpx) {
1029 case SPD_DPX_1000_FULL:
1030 speed = "1000";
1031 duplex = "full";
1032 break;
1033 case SPD_DPX_100_HALF:
1034 speed = "100";
1035 duplex = "half";
1036 break;
1037 case SPD_DPX_100_FULL:
1038 speed = "100";
1039 duplex = "full";
1040 break;
1041 case SPD_DPX_10_HALF:
1042 speed = "10";
1043 duplex = "half";
1044 break;
1045 case SPD_DPX_10_FULL:
1046 speed = "10";
1047 duplex = "full";
1048 break;
1049 default:
1050 speed = "unknown";
1051 duplex = "unknown";
1052 break;
1053 }
1054 }
1055 netdev_notice(vptr->netdev, "Link %s speed %sM bps %s duplex\n",
1056 link, speed, duplex);
1057}
1058
1059/**
1060 * enable_flow_control_ability - flow control
1061 * @vptr: veloity to configure
1062 *
1063 * Set up flow control according to the flow control options
1064 * determined by the eeprom/configuration.
1065 */
1066static void enable_flow_control_ability(struct velocity_info *vptr)
1067{
1068
1069 struct mac_regs __iomem *regs = vptr->mac_regs;
1070
1071 switch (vptr->options.flow_cntl) {
1072
1073 case FLOW_CNTL_DEFAULT:
1074 if (BYTE_REG_BITS_IS_ON(PHYSR0_RXFLC, ®s->PHYSR0))
1075 writel(CR0_FDXRFCEN, ®s->CR0Set);
1076 else
1077 writel(CR0_FDXRFCEN, ®s->CR0Clr);
1078
1079 if (BYTE_REG_BITS_IS_ON(PHYSR0_TXFLC, ®s->PHYSR0))
1080 writel(CR0_FDXTFCEN, ®s->CR0Set);
1081 else
1082 writel(CR0_FDXTFCEN, ®s->CR0Clr);
1083 break;
1084
1085 case FLOW_CNTL_TX:
1086 writel(CR0_FDXTFCEN, ®s->CR0Set);
1087 writel(CR0_FDXRFCEN, ®s->CR0Clr);
1088 break;
1089
1090 case FLOW_CNTL_RX:
1091 writel(CR0_FDXRFCEN, ®s->CR0Set);
1092 writel(CR0_FDXTFCEN, ®s->CR0Clr);
1093 break;
1094
1095 case FLOW_CNTL_TX_RX:
1096 writel(CR0_FDXTFCEN, ®s->CR0Set);
1097 writel(CR0_FDXRFCEN, ®s->CR0Set);
1098 break;
1099
1100 case FLOW_CNTL_DISABLE:
1101 writel(CR0_FDXRFCEN, ®s->CR0Clr);
1102 writel(CR0_FDXTFCEN, ®s->CR0Clr);
1103 break;
1104
1105 default:
1106 break;
1107 }
1108
1109}
1110
1111/**
1112 * velocity_soft_reset - soft reset
1113 * @vptr: velocity to reset
1114 *
1115 * Kick off a soft reset of the velocity adapter and then poll
1116 * until the reset sequence has completed before returning.
1117 */
1118static int velocity_soft_reset(struct velocity_info *vptr)
1119{
1120 struct mac_regs __iomem *regs = vptr->mac_regs;
1121 int i = 0;
1122
1123 writel(CR0_SFRST, ®s->CR0Set);
1124
1125 for (i = 0; i < W_MAX_TIMEOUT; i++) {
1126 udelay(5);
1127 if (!DWORD_REG_BITS_IS_ON(CR0_SFRST, ®s->CR0Set))
1128 break;
1129 }
1130
1131 if (i == W_MAX_TIMEOUT) {
1132 writel(CR0_FORSRST, ®s->CR0Set);
1133 /* FIXME: PCI POSTING */
1134 /* delay 2ms */
1135 mdelay(2);
1136 }
1137 return 0;
1138}
1139
1140/**
1141 * velocity_set_multi - filter list change callback
1142 * @dev: network device
1143 *
1144 * Called by the network layer when the filter lists need to change
1145 * for a velocity adapter. Reload the CAMs with the new address
1146 * filter ruleset.
1147 */
1148static void velocity_set_multi(struct net_device *dev)
1149{
1150 struct velocity_info *vptr = netdev_priv(dev);
1151 struct mac_regs __iomem *regs = vptr->mac_regs;
1152 u8 rx_mode;
1153 int i;
1154 struct netdev_hw_addr *ha;
1155
1156 if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */
1157 writel(0xffffffff, ®s->MARCAM[0]);
1158 writel(0xffffffff, ®s->MARCAM[4]);
1159 rx_mode = (RCR_AM | RCR_AB | RCR_PROM);
1160 } else if ((netdev_mc_count(dev) > vptr->multicast_limit) ||
1161 (dev->flags & IFF_ALLMULTI)) {
1162 writel(0xffffffff, ®s->MARCAM[0]);
1163 writel(0xffffffff, ®s->MARCAM[4]);
1164 rx_mode = (RCR_AM | RCR_AB);
1165 } else {
1166 int offset = MCAM_SIZE - vptr->multicast_limit;
1167 mac_get_cam_mask(regs, vptr->mCAMmask);
1168
1169 i = 0;
1170 netdev_for_each_mc_addr(ha, dev) {
1171 mac_set_cam(regs, i + offset, ha->addr);
1172 vptr->mCAMmask[(offset + i) / 8] |= 1 << ((offset + i) & 7);
1173 i++;
1174 }
1175
1176 mac_set_cam_mask(regs, vptr->mCAMmask);
1177 rx_mode = RCR_AM | RCR_AB | RCR_AP;
1178 }
1179 if (dev->mtu > 1500)
1180 rx_mode |= RCR_AL;
1181
1182 BYTE_REG_BITS_ON(rx_mode, ®s->RCR);
1183
1184}
1185
1186/*
1187 * MII access , media link mode setting functions
1188 */
1189
1190/**
1191 * mii_init - set up MII
1192 * @vptr: velocity adapter
1193 * @mii_status: links tatus
1194 *
1195 * Set up the PHY for the current link state.
1196 */
1197static void mii_init(struct velocity_info *vptr, u32 mii_status)
1198{
1199 u16 BMCR;
1200
1201 switch (PHYID_GET_PHY_ID(vptr->phy_id)) {
1202 case PHYID_ICPLUS_IP101A:
1203 MII_REG_BITS_ON((ADVERTISE_PAUSE_ASYM | ADVERTISE_PAUSE_CAP),
1204 MII_ADVERTISE, vptr->mac_regs);
1205 if (vptr->mii_status & VELOCITY_DUPLEX_FULL)
1206 MII_REG_BITS_ON(TCSR_ECHODIS, MII_SREVISION,
1207 vptr->mac_regs);
1208 else
1209 MII_REG_BITS_OFF(TCSR_ECHODIS, MII_SREVISION,
1210 vptr->mac_regs);
1211 MII_REG_BITS_ON(PLED_LALBE, MII_TPISTATUS, vptr->mac_regs);
1212 break;
1213 case PHYID_CICADA_CS8201:
1214 /*
1215 * Reset to hardware default
1216 */
1217 MII_REG_BITS_OFF((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 /*
1228 * Turn on Link/Activity LED enable bit for CIS8201
1229 */
1230 MII_REG_BITS_ON(PLED_LALBE, MII_TPISTATUS, vptr->mac_regs);
1231 break;
1232 case PHYID_VT3216_32BIT:
1233 case PHYID_VT3216_64BIT:
1234 /*
1235 * Reset to hardware default
1236 */
1237 MII_REG_BITS_ON((ADVERTISE_PAUSE_ASYM | ADVERTISE_PAUSE_CAP), MII_ADVERTISE, vptr->mac_regs);
1238 /*
1239 * Turn on ECHODIS bit in NWay-forced full mode and turn it
1240 * off it in NWay-forced half mode for NWay-forced v.s.
1241 * legacy-forced issue
1242 */
1243 if (vptr->mii_status & VELOCITY_DUPLEX_FULL)
1244 MII_REG_BITS_ON(TCSR_ECHODIS, MII_SREVISION, vptr->mac_regs);
1245 else
1246 MII_REG_BITS_OFF(TCSR_ECHODIS, MII_SREVISION, vptr->mac_regs);
1247 break;
1248
1249 case PHYID_MARVELL_1000:
1250 case PHYID_MARVELL_1000S:
1251 /*
1252 * Assert CRS on Transmit
1253 */
1254 MII_REG_BITS_ON(PSCR_ACRSTX, MII_REG_PSCR, vptr->mac_regs);
1255 /*
1256 * Reset to hardware default
1257 */
1258 MII_REG_BITS_ON((ADVERTISE_PAUSE_ASYM | ADVERTISE_PAUSE_CAP), MII_ADVERTISE, vptr->mac_regs);
1259 break;
1260 default:
1261 ;
1262 }
1263 velocity_mii_read(vptr->mac_regs, MII_BMCR, &BMCR);
1264 if (BMCR & BMCR_ISOLATE) {
1265 BMCR &= ~BMCR_ISOLATE;
1266 velocity_mii_write(vptr->mac_regs, MII_BMCR, BMCR);
1267 }
1268}
1269
1270/**
1271 * setup_queue_timers - Setup interrupt timers
1272 *
1273 * Setup interrupt frequency during suppression (timeout if the frame
1274 * count isn't filled).
1275 */
1276static void setup_queue_timers(struct velocity_info *vptr)
1277{
1278 /* Only for newer revisions */
1279 if (vptr->rev_id >= REV_ID_VT3216_A0) {
1280 u8 txqueue_timer = 0;
1281 u8 rxqueue_timer = 0;
1282
1283 if (vptr->mii_status & (VELOCITY_SPEED_1000 |
1284 VELOCITY_SPEED_100)) {
1285 txqueue_timer = vptr->options.txqueue_timer;
1286 rxqueue_timer = vptr->options.rxqueue_timer;
1287 }
1288
1289 writeb(txqueue_timer, &vptr->mac_regs->TQETMR);
1290 writeb(rxqueue_timer, &vptr->mac_regs->RQETMR);
1291 }
1292}
1293
1294/**
1295 * setup_adaptive_interrupts - Setup interrupt suppression
1296 *
1297 * @vptr velocity adapter
1298 *
1299 * The velocity is able to suppress interrupt during high interrupt load.
1300 * This function turns on that feature.
1301 */
1302static void setup_adaptive_interrupts(struct velocity_info *vptr)
1303{
1304 struct mac_regs __iomem *regs = vptr->mac_regs;
1305 u16 tx_intsup = vptr->options.tx_intsup;
1306 u16 rx_intsup = vptr->options.rx_intsup;
1307
1308 /* Setup default interrupt mask (will be changed below) */
1309 vptr->int_mask = INT_MASK_DEF;
1310
1311 /* Set Tx Interrupt Suppression Threshold */
1312 writeb(CAMCR_PS0, ®s->CAMCR);
1313 if (tx_intsup != 0) {
1314 vptr->int_mask &= ~(ISR_PTXI | ISR_PTX0I | ISR_PTX1I |
1315 ISR_PTX2I | ISR_PTX3I);
1316 writew(tx_intsup, ®s->ISRCTL);
1317 } else
1318 writew(ISRCTL_TSUPDIS, ®s->ISRCTL);
1319
1320 /* Set Rx Interrupt Suppression Threshold */
1321 writeb(CAMCR_PS1, ®s->CAMCR);
1322 if (rx_intsup != 0) {
1323 vptr->int_mask &= ~ISR_PRXI;
1324 writew(rx_intsup, ®s->ISRCTL);
1325 } else
1326 writew(ISRCTL_RSUPDIS, ®s->ISRCTL);
1327
1328 /* Select page to interrupt hold timer */
1329 writeb(0, ®s->CAMCR);
1330}
1331
1332/**
1333 * velocity_init_registers - initialise MAC registers
1334 * @vptr: velocity to init
1335 * @type: type of initialisation (hot or cold)
1336 *
1337 * Initialise the MAC on a reset or on first set up on the
1338 * hardware.
1339 */
1340static void velocity_init_registers(struct velocity_info *vptr,
1341 enum velocity_init_type type)
1342{
1343 struct mac_regs __iomem *regs = vptr->mac_regs;
1344 struct net_device *netdev = vptr->netdev;
1345 int i, mii_status;
1346
1347 mac_wol_reset(regs);
1348
1349 switch (type) {
1350 case VELOCITY_INIT_RESET:
1351 case VELOCITY_INIT_WOL:
1352
1353 netif_stop_queue(netdev);
1354
1355 /*
1356 * Reset RX to prevent RX pointer not on the 4X location
1357 */
1358 velocity_rx_reset(vptr);
1359 mac_rx_queue_run(regs);
1360 mac_rx_queue_wake(regs);
1361
1362 mii_status = velocity_get_opt_media_mode(vptr);
1363 if (velocity_set_media_mode(vptr, mii_status) != VELOCITY_LINK_CHANGE) {
1364 velocity_print_link_status(vptr);
1365 if (!(vptr->mii_status & VELOCITY_LINK_FAIL))
1366 netif_wake_queue(netdev);
1367 }
1368
1369 enable_flow_control_ability(vptr);
1370
1371 mac_clear_isr(regs);
1372 writel(CR0_STOP, ®s->CR0Clr);
1373 writel((CR0_DPOLL | CR0_TXON | CR0_RXON | CR0_STRT),
1374 ®s->CR0Set);
1375
1376 break;
1377
1378 case VELOCITY_INIT_COLD:
1379 default:
1380 /*
1381 * Do reset
1382 */
1383 velocity_soft_reset(vptr);
1384 mdelay(5);
1385
1386 if (!vptr->no_eeprom) {
1387 mac_eeprom_reload(regs);
1388 for (i = 0; i < 6; i++)
1389 writeb(netdev->dev_addr[i], regs->PAR + i);
1390 }
1391
1392 /*
1393 * clear Pre_ACPI bit.
1394 */
1395 BYTE_REG_BITS_OFF(CFGA_PACPI, &(regs->CFGA));
1396 mac_set_rx_thresh(regs, vptr->options.rx_thresh);
1397 mac_set_dma_length(regs, vptr->options.DMA_length);
1398
1399 writeb(WOLCFG_SAM | WOLCFG_SAB, ®s->WOLCFGSet);
1400 /*
1401 * Back off algorithm use original IEEE standard
1402 */
1403 BYTE_REG_BITS_SET(CFGB_OFSET, (CFGB_CRANDOM | CFGB_CAP | CFGB_MBA | CFGB_BAKOPT), ®s->CFGB);
1404
1405 /*
1406 * Init CAM filter
1407 */
1408 velocity_init_cam_filter(vptr);
1409
1410 /*
1411 * Set packet filter: Receive directed and broadcast address
1412 */
1413 velocity_set_multi(netdev);
1414
1415 /*
1416 * Enable MII auto-polling
1417 */
1418 enable_mii_autopoll(regs);
1419
1420 setup_adaptive_interrupts(vptr);
1421
1422 writel(vptr->rx.pool_dma, ®s->RDBaseLo);
1423 writew(vptr->options.numrx - 1, ®s->RDCSize);
1424 mac_rx_queue_run(regs);
1425 mac_rx_queue_wake(regs);
1426
1427 writew(vptr->options.numtx - 1, ®s->TDCSize);
1428
1429 for (i = 0; i < vptr->tx.numq; i++) {
1430 writel(vptr->tx.pool_dma[i], ®s->TDBaseLo[i]);
1431 mac_tx_queue_run(regs, i);
1432 }
1433
1434 init_flow_control_register(vptr);
1435
1436 writel(CR0_STOP, ®s->CR0Clr);
1437 writel((CR0_DPOLL | CR0_TXON | CR0_RXON | CR0_STRT), ®s->CR0Set);
1438
1439 mii_status = velocity_get_opt_media_mode(vptr);
1440 netif_stop_queue(netdev);
1441
1442 mii_init(vptr, mii_status);
1443
1444 if (velocity_set_media_mode(vptr, mii_status) != VELOCITY_LINK_CHANGE) {
1445 velocity_print_link_status(vptr);
1446 if (!(vptr->mii_status & VELOCITY_LINK_FAIL))
1447 netif_wake_queue(netdev);
1448 }
1449
1450 enable_flow_control_ability(vptr);
1451 mac_hw_mibs_init(regs);
1452 mac_write_int_mask(vptr->int_mask, regs);
1453 mac_clear_isr(regs);
1454
1455 }
1456}
1457
1458static void velocity_give_many_rx_descs(struct velocity_info *vptr)
1459{
1460 struct mac_regs __iomem *regs = vptr->mac_regs;
1461 int avail, dirty, unusable;
1462
1463 /*
1464 * RD number must be equal to 4X per hardware spec
1465 * (programming guide rev 1.20, p.13)
1466 */
1467 if (vptr->rx.filled < 4)
1468 return;
1469
1470 wmb();
1471
1472 unusable = vptr->rx.filled & 0x0003;
1473 dirty = vptr->rx.dirty - unusable;
1474 for (avail = vptr->rx.filled & 0xfffc; avail; avail--) {
1475 dirty = (dirty > 0) ? dirty - 1 : vptr->options.numrx - 1;
1476 vptr->rx.ring[dirty].rdesc0.len |= OWNED_BY_NIC;
1477 }
1478
1479 writew(vptr->rx.filled & 0xfffc, ®s->RBRDU);
1480 vptr->rx.filled = unusable;
1481}
1482
1483/**
1484 * velocity_init_dma_rings - set up DMA rings
1485 * @vptr: Velocity to set up
1486 *
1487 * Allocate PCI mapped DMA rings for the receive and transmit layer
1488 * to use.
1489 */
1490static int velocity_init_dma_rings(struct velocity_info *vptr)
1491{
1492 struct velocity_opt *opt = &vptr->options;
1493 const unsigned int rx_ring_size = opt->numrx * sizeof(struct rx_desc);
1494 const unsigned int tx_ring_size = opt->numtx * sizeof(struct tx_desc);
1495 dma_addr_t pool_dma;
1496 void *pool;
1497 unsigned int i;
1498
1499 /*
1500 * Allocate all RD/TD rings a single pool.
1501 *
1502 * dma_alloc_coherent() fulfills the requirement for 64 bytes
1503 * alignment
1504 */
1505 pool = dma_alloc_coherent(vptr->dev, tx_ring_size * vptr->tx.numq +
1506 rx_ring_size, &pool_dma, GFP_ATOMIC);
1507 if (!pool) {
1508 dev_err(vptr->dev, "%s : DMA memory allocation failed.\n",
1509 vptr->netdev->name);
1510 return -ENOMEM;
1511 }
1512
1513 vptr->rx.ring = pool;
1514 vptr->rx.pool_dma = pool_dma;
1515
1516 pool += rx_ring_size;
1517 pool_dma += rx_ring_size;
1518
1519 for (i = 0; i < vptr->tx.numq; i++) {
1520 vptr->tx.rings[i] = pool;
1521 vptr->tx.pool_dma[i] = pool_dma;
1522 pool += tx_ring_size;
1523 pool_dma += tx_ring_size;
1524 }
1525
1526 return 0;
1527}
1528
1529static void velocity_set_rxbufsize(struct velocity_info *vptr, int mtu)
1530{
1531 vptr->rx.buf_sz = (mtu <= ETH_DATA_LEN) ? PKT_BUF_SZ : mtu + 32;
1532}
1533
1534/**
1535 * velocity_alloc_rx_buf - allocate aligned receive buffer
1536 * @vptr: velocity
1537 * @idx: ring index
1538 *
1539 * Allocate a new full sized buffer for the reception of a frame and
1540 * map it into PCI space for the hardware to use. The hardware
1541 * requires *64* byte alignment of the buffer which makes life
1542 * less fun than would be ideal.
1543 */
1544static int velocity_alloc_rx_buf(struct velocity_info *vptr, int idx)
1545{
1546 struct rx_desc *rd = &(vptr->rx.ring[idx]);
1547 struct velocity_rd_info *rd_info = &(vptr->rx.info[idx]);
1548
1549 rd_info->skb = netdev_alloc_skb(vptr->netdev, vptr->rx.buf_sz + 64);
1550 if (rd_info->skb == NULL)
1551 return -ENOMEM;
1552
1553 /*
1554 * Do the gymnastics to get the buffer head for data at
1555 * 64byte alignment.
1556 */
1557 skb_reserve(rd_info->skb,
1558 64 - ((unsigned long) rd_info->skb->data & 63));
1559 rd_info->skb_dma = dma_map_single(vptr->dev, rd_info->skb->data,
1560 vptr->rx.buf_sz, DMA_FROM_DEVICE);
1561
1562 /*
1563 * Fill in the descriptor to match
1564 */
1565
1566 *((u32 *) & (rd->rdesc0)) = 0;
1567 rd->size = cpu_to_le16(vptr->rx.buf_sz) | RX_INTEN;
1568 rd->pa_low = cpu_to_le32(rd_info->skb_dma);
1569 rd->pa_high = 0;
1570 return 0;
1571}
1572
1573
1574static int velocity_rx_refill(struct velocity_info *vptr)
1575{
1576 int dirty = vptr->rx.dirty, done = 0;
1577
1578 do {
1579 struct rx_desc *rd = vptr->rx.ring + dirty;
1580
1581 /* Fine for an all zero Rx desc at init time as well */
1582 if (rd->rdesc0.len & OWNED_BY_NIC)
1583 break;
1584
1585 if (!vptr->rx.info[dirty].skb) {
1586 if (velocity_alloc_rx_buf(vptr, dirty) < 0)
1587 break;
1588 }
1589 done++;
1590 dirty = (dirty < vptr->options.numrx - 1) ? dirty + 1 : 0;
1591 } while (dirty != vptr->rx.curr);
1592
1593 if (done) {
1594 vptr->rx.dirty = dirty;
1595 vptr->rx.filled += done;
1596 }
1597
1598 return done;
1599}
1600
1601/**
1602 * velocity_free_rd_ring - free receive ring
1603 * @vptr: velocity to clean up
1604 *
1605 * Free the receive buffers for each ring slot and any
1606 * attached socket buffers that need to go away.
1607 */
1608static void velocity_free_rd_ring(struct velocity_info *vptr)
1609{
1610 int i;
1611
1612 if (vptr->rx.info == NULL)
1613 return;
1614
1615 for (i = 0; i < vptr->options.numrx; i++) {
1616 struct velocity_rd_info *rd_info = &(vptr->rx.info[i]);
1617 struct rx_desc *rd = vptr->rx.ring + i;
1618
1619 memset(rd, 0, sizeof(*rd));
1620
1621 if (!rd_info->skb)
1622 continue;
1623 dma_unmap_single(vptr->dev, rd_info->skb_dma, vptr->rx.buf_sz,
1624 DMA_FROM_DEVICE);
1625 rd_info->skb_dma = 0;
1626
1627 dev_kfree_skb(rd_info->skb);
1628 rd_info->skb = NULL;
1629 }
1630
1631 kfree(vptr->rx.info);
1632 vptr->rx.info = NULL;
1633}
1634
1635/**
1636 * velocity_init_rd_ring - set up receive ring
1637 * @vptr: velocity to configure
1638 *
1639 * Allocate and set up the receive buffers for each ring slot and
1640 * assign them to the network adapter.
1641 */
1642static int velocity_init_rd_ring(struct velocity_info *vptr)
1643{
1644 int ret = -ENOMEM;
1645
1646 vptr->rx.info = kcalloc(vptr->options.numrx,
1647 sizeof(struct velocity_rd_info), GFP_KERNEL);
1648 if (!vptr->rx.info)
1649 goto out;
1650
1651 velocity_init_rx_ring_indexes(vptr);
1652
1653 if (velocity_rx_refill(vptr) != vptr->options.numrx) {
1654 netdev_err(vptr->netdev, "failed to allocate RX buffer\n");
1655 velocity_free_rd_ring(vptr);
1656 goto out;
1657 }
1658
1659 ret = 0;
1660out:
1661 return ret;
1662}
1663
1664/**
1665 * velocity_init_td_ring - set up transmit ring
1666 * @vptr: velocity
1667 *
1668 * Set up the transmit ring and chain the ring pointers together.
1669 * Returns zero on success or a negative posix errno code for
1670 * failure.
1671 */
1672static int velocity_init_td_ring(struct velocity_info *vptr)
1673{
1674 int j;
1675
1676 /* Init the TD ring entries */
1677 for (j = 0; j < vptr->tx.numq; j++) {
1678
1679 vptr->tx.infos[j] = kcalloc(vptr->options.numtx,
1680 sizeof(struct velocity_td_info),
1681 GFP_KERNEL);
1682 if (!vptr->tx.infos[j]) {
1683 while (--j >= 0)
1684 kfree(vptr->tx.infos[j]);
1685 return -ENOMEM;
1686 }
1687
1688 vptr->tx.tail[j] = vptr->tx.curr[j] = vptr->tx.used[j] = 0;
1689 }
1690 return 0;
1691}
1692
1693/**
1694 * velocity_free_dma_rings - free PCI ring pointers
1695 * @vptr: Velocity to free from
1696 *
1697 * Clean up the PCI ring buffers allocated to this velocity.
1698 */
1699static void velocity_free_dma_rings(struct velocity_info *vptr)
1700{
1701 const int size = vptr->options.numrx * sizeof(struct rx_desc) +
1702 vptr->options.numtx * sizeof(struct tx_desc) * vptr->tx.numq;
1703
1704 dma_free_coherent(vptr->dev, size, vptr->rx.ring, vptr->rx.pool_dma);
1705}
1706
1707static int velocity_init_rings(struct velocity_info *vptr, int mtu)
1708{
1709 int ret;
1710
1711 velocity_set_rxbufsize(vptr, mtu);
1712
1713 ret = velocity_init_dma_rings(vptr);
1714 if (ret < 0)
1715 goto out;
1716
1717 ret = velocity_init_rd_ring(vptr);
1718 if (ret < 0)
1719 goto err_free_dma_rings_0;
1720
1721 ret = velocity_init_td_ring(vptr);
1722 if (ret < 0)
1723 goto err_free_rd_ring_1;
1724out:
1725 return ret;
1726
1727err_free_rd_ring_1:
1728 velocity_free_rd_ring(vptr);
1729err_free_dma_rings_0:
1730 velocity_free_dma_rings(vptr);
1731 goto out;
1732}
1733
1734/**
1735 * velocity_free_tx_buf - free transmit buffer
1736 * @vptr: velocity
1737 * @tdinfo: buffer
1738 *
1739 * Release an transmit buffer. If the buffer was preallocated then
1740 * recycle it, if not then unmap the buffer.
1741 */
1742static void velocity_free_tx_buf(struct velocity_info *vptr,
1743 struct velocity_td_info *tdinfo, struct tx_desc *td)
1744{
1745 struct sk_buff *skb = tdinfo->skb;
1746 int i;
1747
1748 /*
1749 * Don't unmap the pre-allocated tx_bufs
1750 */
1751 for (i = 0; i < tdinfo->nskb_dma; i++) {
1752 size_t pktlen = max_t(size_t, skb->len, ETH_ZLEN);
1753
1754 /* For scatter-gather */
1755 if (skb_shinfo(skb)->nr_frags > 0)
1756 pktlen = max_t(size_t, pktlen,
1757 td->td_buf[i].size & ~TD_QUEUE);
1758
1759 dma_unmap_single(vptr->dev, tdinfo->skb_dma[i],
1760 le16_to_cpu(pktlen), DMA_TO_DEVICE);
1761 }
1762 dev_consume_skb_irq(skb);
1763 tdinfo->skb = NULL;
1764}
1765
1766/*
1767 * FIXME: could we merge this with velocity_free_tx_buf ?
1768 */
1769static void velocity_free_td_ring_entry(struct velocity_info *vptr,
1770 int q, int n)
1771{
1772 struct velocity_td_info *td_info = &(vptr->tx.infos[q][n]);
1773 int i;
1774
1775 if (td_info == NULL)
1776 return;
1777
1778 if (td_info->skb) {
1779 for (i = 0; i < td_info->nskb_dma; i++) {
1780 if (td_info->skb_dma[i]) {
1781 dma_unmap_single(vptr->dev, td_info->skb_dma[i],
1782 td_info->skb->len, DMA_TO_DEVICE);
1783 td_info->skb_dma[i] = 0;
1784 }
1785 }
1786 dev_kfree_skb(td_info->skb);
1787 td_info->skb = NULL;
1788 }
1789}
1790
1791/**
1792 * velocity_free_td_ring - free td ring
1793 * @vptr: velocity
1794 *
1795 * Free up the transmit ring for this particular velocity adapter.
1796 * We free the ring contents but not the ring itself.
1797 */
1798static void velocity_free_td_ring(struct velocity_info *vptr)
1799{
1800 int i, j;
1801
1802 for (j = 0; j < vptr->tx.numq; j++) {
1803 if (vptr->tx.infos[j] == NULL)
1804 continue;
1805 for (i = 0; i < vptr->options.numtx; i++)
1806 velocity_free_td_ring_entry(vptr, j, i);
1807
1808 kfree(vptr->tx.infos[j]);
1809 vptr->tx.infos[j] = NULL;
1810 }
1811}
1812
1813static void velocity_free_rings(struct velocity_info *vptr)
1814{
1815 velocity_free_td_ring(vptr);
1816 velocity_free_rd_ring(vptr);
1817 velocity_free_dma_rings(vptr);
1818}
1819
1820/**
1821 * velocity_error - handle error from controller
1822 * @vptr: velocity
1823 * @status: card status
1824 *
1825 * Process an error report from the hardware and attempt to recover
1826 * the card itself. At the moment we cannot recover from some
1827 * theoretically impossible errors but this could be fixed using
1828 * the pci_device_failed logic to bounce the hardware
1829 *
1830 */
1831static void velocity_error(struct velocity_info *vptr, int status)
1832{
1833
1834 if (status & ISR_TXSTLI) {
1835 struct mac_regs __iomem *regs = vptr->mac_regs;
1836
1837 netdev_err(vptr->netdev, "TD structure error TDindex=%hx\n",
1838 readw(®s->TDIdx[0]));
1839 BYTE_REG_BITS_ON(TXESR_TDSTR, ®s->TXESR);
1840 writew(TRDCSR_RUN, ®s->TDCSRClr);
1841 netif_stop_queue(vptr->netdev);
1842
1843 /* FIXME: port over the pci_device_failed code and use it
1844 here */
1845 }
1846
1847 if (status & ISR_SRCI) {
1848 struct mac_regs __iomem *regs = vptr->mac_regs;
1849 int linked;
1850
1851 if (vptr->options.spd_dpx == SPD_DPX_AUTO) {
1852 vptr->mii_status = check_connection_type(regs);
1853
1854 /*
1855 * If it is a 3119, disable frame bursting in
1856 * halfduplex mode and enable it in fullduplex
1857 * mode
1858 */
1859 if (vptr->rev_id < REV_ID_VT3216_A0) {
1860 if (vptr->mii_status & VELOCITY_DUPLEX_FULL)
1861 BYTE_REG_BITS_ON(TCR_TB2BDIS, ®s->TCR);
1862 else
1863 BYTE_REG_BITS_OFF(TCR_TB2BDIS, ®s->TCR);
1864 }
1865 /*
1866 * Only enable CD heart beat counter in 10HD mode
1867 */
1868 if (!(vptr->mii_status & VELOCITY_DUPLEX_FULL) && (vptr->mii_status & VELOCITY_SPEED_10))
1869 BYTE_REG_BITS_OFF(TESTCFG_HBDIS, ®s->TESTCFG);
1870 else
1871 BYTE_REG_BITS_ON(TESTCFG_HBDIS, ®s->TESTCFG);
1872
1873 setup_queue_timers(vptr);
1874 }
1875 /*
1876 * Get link status from PHYSR0
1877 */
1878 linked = readb(®s->PHYSR0) & PHYSR0_LINKGD;
1879
1880 if (linked) {
1881 vptr->mii_status &= ~VELOCITY_LINK_FAIL;
1882 netif_carrier_on(vptr->netdev);
1883 } else {
1884 vptr->mii_status |= VELOCITY_LINK_FAIL;
1885 netif_carrier_off(vptr->netdev);
1886 }
1887
1888 velocity_print_link_status(vptr);
1889 enable_flow_control_ability(vptr);
1890
1891 /*
1892 * Re-enable auto-polling because SRCI will disable
1893 * auto-polling
1894 */
1895
1896 enable_mii_autopoll(regs);
1897
1898 if (vptr->mii_status & VELOCITY_LINK_FAIL)
1899 netif_stop_queue(vptr->netdev);
1900 else
1901 netif_wake_queue(vptr->netdev);
1902
1903 }
1904 if (status & ISR_MIBFI)
1905 velocity_update_hw_mibs(vptr);
1906 if (status & ISR_LSTEI)
1907 mac_rx_queue_wake(vptr->mac_regs);
1908}
1909
1910/**
1911 * tx_srv - transmit interrupt service
1912 * @vptr; Velocity
1913 *
1914 * Scan the queues looking for transmitted packets that
1915 * we can complete and clean up. Update any statistics as
1916 * necessary/
1917 */
1918static int velocity_tx_srv(struct velocity_info *vptr)
1919{
1920 struct tx_desc *td;
1921 int qnum;
1922 int full = 0;
1923 int idx;
1924 int works = 0;
1925 struct velocity_td_info *tdinfo;
1926 struct net_device_stats *stats = &vptr->netdev->stats;
1927
1928 for (qnum = 0; qnum < vptr->tx.numq; qnum++) {
1929 for (idx = vptr->tx.tail[qnum]; vptr->tx.used[qnum] > 0;
1930 idx = (idx + 1) % vptr->options.numtx) {
1931
1932 /*
1933 * Get Tx Descriptor
1934 */
1935 td = &(vptr->tx.rings[qnum][idx]);
1936 tdinfo = &(vptr->tx.infos[qnum][idx]);
1937
1938 if (td->tdesc0.len & OWNED_BY_NIC)
1939 break;
1940
1941 if ((works++ > 15))
1942 break;
1943
1944 if (td->tdesc0.TSR & TSR0_TERR) {
1945 stats->tx_errors++;
1946 stats->tx_dropped++;
1947 if (td->tdesc0.TSR & TSR0_CDH)
1948 stats->tx_heartbeat_errors++;
1949 if (td->tdesc0.TSR & TSR0_CRS)
1950 stats->tx_carrier_errors++;
1951 if (td->tdesc0.TSR & TSR0_ABT)
1952 stats->tx_aborted_errors++;
1953 if (td->tdesc0.TSR & TSR0_OWC)
1954 stats->tx_window_errors++;
1955 } else {
1956 stats->tx_packets++;
1957 stats->tx_bytes += tdinfo->skb->len;
1958 }
1959 velocity_free_tx_buf(vptr, tdinfo, td);
1960 vptr->tx.used[qnum]--;
1961 }
1962 vptr->tx.tail[qnum] = idx;
1963
1964 if (AVAIL_TD(vptr, qnum) < 1)
1965 full = 1;
1966 }
1967 /*
1968 * Look to see if we should kick the transmit network
1969 * layer for more work.
1970 */
1971 if (netif_queue_stopped(vptr->netdev) && (full == 0) &&
1972 (!(vptr->mii_status & VELOCITY_LINK_FAIL))) {
1973 netif_wake_queue(vptr->netdev);
1974 }
1975 return works;
1976}
1977
1978/**
1979 * velocity_rx_csum - checksum process
1980 * @rd: receive packet descriptor
1981 * @skb: network layer packet buffer
1982 *
1983 * Process the status bits for the received packet and determine
1984 * if the checksum was computed and verified by the hardware
1985 */
1986static inline void velocity_rx_csum(struct rx_desc *rd, struct sk_buff *skb)
1987{
1988 skb_checksum_none_assert(skb);
1989
1990 if (rd->rdesc1.CSM & CSM_IPKT) {
1991 if (rd->rdesc1.CSM & CSM_IPOK) {
1992 if ((rd->rdesc1.CSM & CSM_TCPKT) ||
1993 (rd->rdesc1.CSM & CSM_UDPKT)) {
1994 if (!(rd->rdesc1.CSM & CSM_TUPOK))
1995 return;
1996 }
1997 skb->ip_summed = CHECKSUM_UNNECESSARY;
1998 }
1999 }
2000}
2001
2002/**
2003 * velocity_rx_copy - in place Rx copy for small packets
2004 * @rx_skb: network layer packet buffer candidate
2005 * @pkt_size: received data size
2006 * @rd: receive packet descriptor
2007 * @dev: network device
2008 *
2009 * Replace the current skb that is scheduled for Rx processing by a
2010 * shorter, immediately allocated skb, if the received packet is small
2011 * enough. This function returns a negative value if the received
2012 * packet is too big or if memory is exhausted.
2013 */
2014static int velocity_rx_copy(struct sk_buff **rx_skb, int pkt_size,
2015 struct velocity_info *vptr)
2016{
2017 int ret = -1;
2018 if (pkt_size < rx_copybreak) {
2019 struct sk_buff *new_skb;
2020
2021 new_skb = netdev_alloc_skb_ip_align(vptr->netdev, pkt_size);
2022 if (new_skb) {
2023 new_skb->ip_summed = rx_skb[0]->ip_summed;
2024 skb_copy_from_linear_data(*rx_skb, new_skb->data, pkt_size);
2025 *rx_skb = new_skb;
2026 ret = 0;
2027 }
2028
2029 }
2030 return ret;
2031}
2032
2033/**
2034 * velocity_iph_realign - IP header alignment
2035 * @vptr: velocity we are handling
2036 * @skb: network layer packet buffer
2037 * @pkt_size: received data size
2038 *
2039 * Align IP header on a 2 bytes boundary. This behavior can be
2040 * configured by the user.
2041 */
2042static inline void velocity_iph_realign(struct velocity_info *vptr,
2043 struct sk_buff *skb, int pkt_size)
2044{
2045 if (vptr->flags & VELOCITY_FLAGS_IP_ALIGN) {
2046 memmove(skb->data + 2, skb->data, pkt_size);
2047 skb_reserve(skb, 2);
2048 }
2049}
2050
2051/**
2052 * velocity_receive_frame - received packet processor
2053 * @vptr: velocity we are handling
2054 * @idx: ring index
2055 *
2056 * A packet has arrived. We process the packet and if appropriate
2057 * pass the frame up the network stack
2058 */
2059static int velocity_receive_frame(struct velocity_info *vptr, int idx)
2060{
2061 struct net_device_stats *stats = &vptr->netdev->stats;
2062 struct velocity_rd_info *rd_info = &(vptr->rx.info[idx]);
2063 struct rx_desc *rd = &(vptr->rx.ring[idx]);
2064 int pkt_len = le16_to_cpu(rd->rdesc0.len) & 0x3fff;
2065 struct sk_buff *skb;
2066
2067 if (unlikely(rd->rdesc0.RSR & (RSR_STP | RSR_EDP | RSR_RL))) {
2068 if (rd->rdesc0.RSR & (RSR_STP | RSR_EDP))
2069 netdev_err(vptr->netdev, "received frame spans multiple RDs\n");
2070 stats->rx_length_errors++;
2071 return -EINVAL;
2072 }
2073
2074 if (rd->rdesc0.RSR & RSR_MAR)
2075 stats->multicast++;
2076
2077 skb = rd_info->skb;
2078
2079 dma_sync_single_for_cpu(vptr->dev, rd_info->skb_dma,
2080 vptr->rx.buf_sz, DMA_FROM_DEVICE);
2081
2082 velocity_rx_csum(rd, skb);
2083
2084 if (velocity_rx_copy(&skb, pkt_len, vptr) < 0) {
2085 velocity_iph_realign(vptr, skb, pkt_len);
2086 rd_info->skb = NULL;
2087 dma_unmap_single(vptr->dev, rd_info->skb_dma, vptr->rx.buf_sz,
2088 DMA_FROM_DEVICE);
2089 } else {
2090 dma_sync_single_for_device(vptr->dev, rd_info->skb_dma,
2091 vptr->rx.buf_sz, DMA_FROM_DEVICE);
2092 }
2093
2094 skb_put(skb, pkt_len - 4);
2095 skb->protocol = eth_type_trans(skb, vptr->netdev);
2096
2097 if (rd->rdesc0.RSR & RSR_DETAG) {
2098 u16 vid = swab16(le16_to_cpu(rd->rdesc1.PQTAG));
2099
2100 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid);
2101 }
2102 netif_receive_skb(skb);
2103
2104 stats->rx_bytes += pkt_len;
2105 stats->rx_packets++;
2106
2107 return 0;
2108}
2109
2110/**
2111 * velocity_rx_srv - service RX interrupt
2112 * @vptr: velocity
2113 *
2114 * Walk the receive ring of the velocity adapter and remove
2115 * any received packets from the receive queue. Hand the ring
2116 * slots back to the adapter for reuse.
2117 */
2118static int velocity_rx_srv(struct velocity_info *vptr, int budget_left)
2119{
2120 struct net_device_stats *stats = &vptr->netdev->stats;
2121 int rd_curr = vptr->rx.curr;
2122 int works = 0;
2123
2124 while (works < budget_left) {
2125 struct rx_desc *rd = vptr->rx.ring + rd_curr;
2126
2127 if (!vptr->rx.info[rd_curr].skb)
2128 break;
2129
2130 if (rd->rdesc0.len & OWNED_BY_NIC)
2131 break;
2132
2133 rmb();
2134
2135 /*
2136 * Don't drop CE or RL error frame although RXOK is off
2137 */
2138 if (rd->rdesc0.RSR & (RSR_RXOK | RSR_CE | RSR_RL)) {
2139 if (velocity_receive_frame(vptr, rd_curr) < 0)
2140 stats->rx_dropped++;
2141 } else {
2142 if (rd->rdesc0.RSR & RSR_CRC)
2143 stats->rx_crc_errors++;
2144 if (rd->rdesc0.RSR & RSR_FAE)
2145 stats->rx_frame_errors++;
2146
2147 stats->rx_dropped++;
2148 }
2149
2150 rd->size |= RX_INTEN;
2151
2152 rd_curr++;
2153 if (rd_curr >= vptr->options.numrx)
2154 rd_curr = 0;
2155 works++;
2156 }
2157
2158 vptr->rx.curr = rd_curr;
2159
2160 if ((works > 0) && (velocity_rx_refill(vptr) > 0))
2161 velocity_give_many_rx_descs(vptr);
2162
2163 VAR_USED(stats);
2164 return works;
2165}
2166
2167static int velocity_poll(struct napi_struct *napi, int budget)
2168{
2169 struct velocity_info *vptr = container_of(napi,
2170 struct velocity_info, napi);
2171 unsigned int rx_done;
2172 unsigned long flags;
2173
2174 /*
2175 * Do rx and tx twice for performance (taken from the VIA
2176 * out-of-tree driver).
2177 */
2178 rx_done = velocity_rx_srv(vptr, budget);
2179 spin_lock_irqsave(&vptr->lock, flags);
2180 velocity_tx_srv(vptr);
2181 /* If budget not fully consumed, exit the polling mode */
2182 if (rx_done < budget) {
2183 napi_complete_done(napi, rx_done);
2184 mac_enable_int(vptr->mac_regs);
2185 }
2186 spin_unlock_irqrestore(&vptr->lock, flags);
2187
2188 return rx_done;
2189}
2190
2191/**
2192 * velocity_intr - interrupt callback
2193 * @irq: interrupt number
2194 * @dev_instance: interrupting device
2195 *
2196 * Called whenever an interrupt is generated by the velocity
2197 * adapter IRQ line. We may not be the source of the interrupt
2198 * and need to identify initially if we are, and if not exit as
2199 * efficiently as possible.
2200 */
2201static irqreturn_t velocity_intr(int irq, void *dev_instance)
2202{
2203 struct net_device *dev = dev_instance;
2204 struct velocity_info *vptr = netdev_priv(dev);
2205 u32 isr_status;
2206
2207 spin_lock(&vptr->lock);
2208 isr_status = mac_read_isr(vptr->mac_regs);
2209
2210 /* Not us ? */
2211 if (isr_status == 0) {
2212 spin_unlock(&vptr->lock);
2213 return IRQ_NONE;
2214 }
2215
2216 /* Ack the interrupt */
2217 mac_write_isr(vptr->mac_regs, isr_status);
2218
2219 if (likely(napi_schedule_prep(&vptr->napi))) {
2220 mac_disable_int(vptr->mac_regs);
2221 __napi_schedule(&vptr->napi);
2222 }
2223
2224 if (isr_status & (~(ISR_PRXI | ISR_PPRXI | ISR_PTXI | ISR_PPTXI)))
2225 velocity_error(vptr, isr_status);
2226
2227 spin_unlock(&vptr->lock);
2228
2229 return IRQ_HANDLED;
2230}
2231
2232/**
2233 * velocity_open - interface activation callback
2234 * @dev: network layer device to open
2235 *
2236 * Called when the network layer brings the interface up. Returns
2237 * a negative posix error code on failure, or zero on success.
2238 *
2239 * All the ring allocation and set up is done on open for this
2240 * adapter to minimise memory usage when inactive
2241 */
2242static int velocity_open(struct net_device *dev)
2243{
2244 struct velocity_info *vptr = netdev_priv(dev);
2245 int ret;
2246
2247 ret = velocity_init_rings(vptr, dev->mtu);
2248 if (ret < 0)
2249 goto out;
2250
2251 /* Ensure chip is running */
2252 velocity_set_power_state(vptr, PCI_D0);
2253
2254 velocity_init_registers(vptr, VELOCITY_INIT_COLD);
2255
2256 ret = request_irq(dev->irq, velocity_intr, IRQF_SHARED,
2257 dev->name, dev);
2258 if (ret < 0) {
2259 /* Power down the chip */
2260 velocity_set_power_state(vptr, PCI_D3hot);
2261 velocity_free_rings(vptr);
2262 goto out;
2263 }
2264
2265 velocity_give_many_rx_descs(vptr);
2266
2267 mac_enable_int(vptr->mac_regs);
2268 netif_start_queue(dev);
2269 napi_enable(&vptr->napi);
2270 vptr->flags |= VELOCITY_FLAGS_OPENED;
2271out:
2272 return ret;
2273}
2274
2275/**
2276 * velocity_shutdown - shut down the chip
2277 * @vptr: velocity to deactivate
2278 *
2279 * Shuts down the internal operations of the velocity and
2280 * disables interrupts, autopolling, transmit and receive
2281 */
2282static void velocity_shutdown(struct velocity_info *vptr)
2283{
2284 struct mac_regs __iomem *regs = vptr->mac_regs;
2285 mac_disable_int(regs);
2286 writel(CR0_STOP, ®s->CR0Set);
2287 writew(0xFFFF, ®s->TDCSRClr);
2288 writeb(0xFF, ®s->RDCSRClr);
2289 safe_disable_mii_autopoll(regs);
2290 mac_clear_isr(regs);
2291}
2292
2293/**
2294 * velocity_change_mtu - MTU change callback
2295 * @dev: network device
2296 * @new_mtu: desired MTU
2297 *
2298 * Handle requests from the networking layer for MTU change on
2299 * this interface. It gets called on a change by the network layer.
2300 * Return zero for success or negative posix error code.
2301 */
2302static int velocity_change_mtu(struct net_device *dev, int new_mtu)
2303{
2304 struct velocity_info *vptr = netdev_priv(dev);
2305 int ret = 0;
2306
2307 if (!netif_running(dev)) {
2308 dev->mtu = new_mtu;
2309 goto out_0;
2310 }
2311
2312 if (dev->mtu != new_mtu) {
2313 struct velocity_info *tmp_vptr;
2314 unsigned long flags;
2315 struct rx_info rx;
2316 struct tx_info tx;
2317
2318 tmp_vptr = kzalloc(sizeof(*tmp_vptr), GFP_KERNEL);
2319 if (!tmp_vptr) {
2320 ret = -ENOMEM;
2321 goto out_0;
2322 }
2323
2324 tmp_vptr->netdev = dev;
2325 tmp_vptr->pdev = vptr->pdev;
2326 tmp_vptr->dev = vptr->dev;
2327 tmp_vptr->options = vptr->options;
2328 tmp_vptr->tx.numq = vptr->tx.numq;
2329
2330 ret = velocity_init_rings(tmp_vptr, new_mtu);
2331 if (ret < 0)
2332 goto out_free_tmp_vptr_1;
2333
2334 napi_disable(&vptr->napi);
2335
2336 spin_lock_irqsave(&vptr->lock, flags);
2337
2338 netif_stop_queue(dev);
2339 velocity_shutdown(vptr);
2340
2341 rx = vptr->rx;
2342 tx = vptr->tx;
2343
2344 vptr->rx = tmp_vptr->rx;
2345 vptr->tx = tmp_vptr->tx;
2346
2347 tmp_vptr->rx = rx;
2348 tmp_vptr->tx = tx;
2349
2350 dev->mtu = new_mtu;
2351
2352 velocity_init_registers(vptr, VELOCITY_INIT_COLD);
2353
2354 velocity_give_many_rx_descs(vptr);
2355
2356 napi_enable(&vptr->napi);
2357
2358 mac_enable_int(vptr->mac_regs);
2359 netif_start_queue(dev);
2360
2361 spin_unlock_irqrestore(&vptr->lock, flags);
2362
2363 velocity_free_rings(tmp_vptr);
2364
2365out_free_tmp_vptr_1:
2366 kfree(tmp_vptr);
2367 }
2368out_0:
2369 return ret;
2370}
2371
2372#ifdef CONFIG_NET_POLL_CONTROLLER
2373/**
2374 * velocity_poll_controller - Velocity Poll controller function
2375 * @dev: network device
2376 *
2377 *
2378 * Used by NETCONSOLE and other diagnostic tools to allow network I/P
2379 * with interrupts disabled.
2380 */
2381static void velocity_poll_controller(struct net_device *dev)
2382{
2383 disable_irq(dev->irq);
2384 velocity_intr(dev->irq, dev);
2385 enable_irq(dev->irq);
2386}
2387#endif
2388
2389/**
2390 * velocity_mii_ioctl - MII ioctl handler
2391 * @dev: network device
2392 * @ifr: the ifreq block for the ioctl
2393 * @cmd: the command
2394 *
2395 * Process MII requests made via ioctl from the network layer. These
2396 * are used by tools like kudzu to interrogate the link state of the
2397 * hardware
2398 */
2399static int velocity_mii_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
2400{
2401 struct velocity_info *vptr = netdev_priv(dev);
2402 struct mac_regs __iomem *regs = vptr->mac_regs;
2403 unsigned long flags;
2404 struct mii_ioctl_data *miidata = if_mii(ifr);
2405 int err;
2406
2407 switch (cmd) {
2408 case SIOCGMIIPHY:
2409 miidata->phy_id = readb(®s->MIIADR) & 0x1f;
2410 break;
2411 case SIOCGMIIREG:
2412 if (velocity_mii_read(vptr->mac_regs, miidata->reg_num & 0x1f, &(miidata->val_out)) < 0)
2413 return -ETIMEDOUT;
2414 break;
2415 case SIOCSMIIREG:
2416 spin_lock_irqsave(&vptr->lock, flags);
2417 err = velocity_mii_write(vptr->mac_regs, miidata->reg_num & 0x1f, miidata->val_in);
2418 spin_unlock_irqrestore(&vptr->lock, flags);
2419 check_connection_type(vptr->mac_regs);
2420 if (err)
2421 return err;
2422 break;
2423 default:
2424 return -EOPNOTSUPP;
2425 }
2426 return 0;
2427}
2428
2429/**
2430 * velocity_ioctl - ioctl entry point
2431 * @dev: network device
2432 * @rq: interface request ioctl
2433 * @cmd: command code
2434 *
2435 * Called when the user issues an ioctl request to the network
2436 * device in question. The velocity interface supports MII.
2437 */
2438static int velocity_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2439{
2440 struct velocity_info *vptr = netdev_priv(dev);
2441 int ret;
2442
2443 /* If we are asked for information and the device is power
2444 saving then we need to bring the device back up to talk to it */
2445
2446 if (!netif_running(dev))
2447 velocity_set_power_state(vptr, PCI_D0);
2448
2449 switch (cmd) {
2450 case SIOCGMIIPHY: /* Get address of MII PHY in use. */
2451 case SIOCGMIIREG: /* Read MII PHY register. */
2452 case SIOCSMIIREG: /* Write to MII PHY register. */
2453 ret = velocity_mii_ioctl(dev, rq, cmd);
2454 break;
2455
2456 default:
2457 ret = -EOPNOTSUPP;
2458 }
2459 if (!netif_running(dev))
2460 velocity_set_power_state(vptr, PCI_D3hot);
2461
2462
2463 return ret;
2464}
2465
2466/**
2467 * velocity_get_status - statistics callback
2468 * @dev: network device
2469 *
2470 * Callback from the network layer to allow driver statistics
2471 * to be resynchronized with hardware collected state. In the
2472 * case of the velocity we need to pull the MIB counters from
2473 * the hardware into the counters before letting the network
2474 * layer display them.
2475 */
2476static struct net_device_stats *velocity_get_stats(struct net_device *dev)
2477{
2478 struct velocity_info *vptr = netdev_priv(dev);
2479
2480 /* If the hardware is down, don't touch MII */
2481 if (!netif_running(dev))
2482 return &dev->stats;
2483
2484 spin_lock_irq(&vptr->lock);
2485 velocity_update_hw_mibs(vptr);
2486 spin_unlock_irq(&vptr->lock);
2487
2488 dev->stats.rx_packets = vptr->mib_counter[HW_MIB_ifRxAllPkts];
2489 dev->stats.rx_errors = vptr->mib_counter[HW_MIB_ifRxErrorPkts];
2490 dev->stats.rx_length_errors = vptr->mib_counter[HW_MIB_ifInRangeLengthErrors];
2491
2492// unsigned long rx_dropped; /* no space in linux buffers */
2493 dev->stats.collisions = vptr->mib_counter[HW_MIB_ifTxEtherCollisions];
2494 /* detailed rx_errors: */
2495// unsigned long rx_length_errors;
2496// unsigned long rx_over_errors; /* receiver ring buff overflow */
2497 dev->stats.rx_crc_errors = vptr->mib_counter[HW_MIB_ifRxPktCRCE];
2498// unsigned long rx_frame_errors; /* recv'd frame alignment error */
2499// unsigned long rx_fifo_errors; /* recv'r fifo overrun */
2500// unsigned long rx_missed_errors; /* receiver missed packet */
2501
2502 /* detailed tx_errors */
2503// unsigned long tx_fifo_errors;
2504
2505 return &dev->stats;
2506}
2507
2508/**
2509 * velocity_close - close adapter callback
2510 * @dev: network device
2511 *
2512 * Callback from the network layer when the velocity is being
2513 * deactivated by the network layer
2514 */
2515static int velocity_close(struct net_device *dev)
2516{
2517 struct velocity_info *vptr = netdev_priv(dev);
2518
2519 napi_disable(&vptr->napi);
2520 netif_stop_queue(dev);
2521 velocity_shutdown(vptr);
2522
2523 if (vptr->flags & VELOCITY_FLAGS_WOL_ENABLED)
2524 velocity_get_ip(vptr);
2525
2526 free_irq(dev->irq, dev);
2527
2528 velocity_free_rings(vptr);
2529
2530 vptr->flags &= (~VELOCITY_FLAGS_OPENED);
2531 return 0;
2532}
2533
2534/**
2535 * velocity_xmit - transmit packet callback
2536 * @skb: buffer to transmit
2537 * @dev: network device
2538 *
2539 * Called by the networ layer to request a packet is queued to
2540 * the velocity. Returns zero on success.
2541 */
2542static netdev_tx_t velocity_xmit(struct sk_buff *skb,
2543 struct net_device *dev)
2544{
2545 struct velocity_info *vptr = netdev_priv(dev);
2546 int qnum = 0;
2547 struct tx_desc *td_ptr;
2548 struct velocity_td_info *tdinfo;
2549 unsigned long flags;
2550 int pktlen;
2551 int index, prev;
2552 int i = 0;
2553
2554 if (skb_padto(skb, ETH_ZLEN))
2555 goto out;
2556
2557 /* The hardware can handle at most 7 memory segments, so merge
2558 * the skb if there are more */
2559 if (skb_shinfo(skb)->nr_frags > 6 && __skb_linearize(skb)) {
2560 dev_kfree_skb_any(skb);
2561 return NETDEV_TX_OK;
2562 }
2563
2564 pktlen = skb_shinfo(skb)->nr_frags == 0 ?
2565 max_t(unsigned int, skb->len, ETH_ZLEN) :
2566 skb_headlen(skb);
2567
2568 spin_lock_irqsave(&vptr->lock, flags);
2569
2570 index = vptr->tx.curr[qnum];
2571 td_ptr = &(vptr->tx.rings[qnum][index]);
2572 tdinfo = &(vptr->tx.infos[qnum][index]);
2573
2574 td_ptr->tdesc1.TCR = TCR0_TIC;
2575 td_ptr->td_buf[0].size &= ~TD_QUEUE;
2576
2577 /*
2578 * Map the linear network buffer into PCI space and
2579 * add it to the transmit ring.
2580 */
2581 tdinfo->skb = skb;
2582 tdinfo->skb_dma[0] = dma_map_single(vptr->dev, skb->data, pktlen,
2583 DMA_TO_DEVICE);
2584 td_ptr->tdesc0.len = cpu_to_le16(pktlen);
2585 td_ptr->td_buf[0].pa_low = cpu_to_le32(tdinfo->skb_dma[0]);
2586 td_ptr->td_buf[0].pa_high = 0;
2587 td_ptr->td_buf[0].size = cpu_to_le16(pktlen);
2588
2589 /* Handle fragments */
2590 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
2591 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
2592
2593 tdinfo->skb_dma[i + 1] = skb_frag_dma_map(vptr->dev,
2594 frag, 0,
2595 skb_frag_size(frag),
2596 DMA_TO_DEVICE);
2597
2598 td_ptr->td_buf[i + 1].pa_low = cpu_to_le32(tdinfo->skb_dma[i + 1]);
2599 td_ptr->td_buf[i + 1].pa_high = 0;
2600 td_ptr->td_buf[i + 1].size = cpu_to_le16(skb_frag_size(frag));
2601 }
2602 tdinfo->nskb_dma = i + 1;
2603
2604 td_ptr->tdesc1.cmd = TCPLS_NORMAL + (tdinfo->nskb_dma + 1) * 16;
2605
2606 if (skb_vlan_tag_present(skb)) {
2607 td_ptr->tdesc1.vlan = cpu_to_le16(skb_vlan_tag_get(skb));
2608 td_ptr->tdesc1.TCR |= TCR0_VETAG;
2609 }
2610
2611 /*
2612 * Handle hardware checksum
2613 */
2614 if (skb->ip_summed == CHECKSUM_PARTIAL) {
2615 const struct iphdr *ip = ip_hdr(skb);
2616 if (ip->protocol == IPPROTO_TCP)
2617 td_ptr->tdesc1.TCR |= TCR0_TCPCK;
2618 else if (ip->protocol == IPPROTO_UDP)
2619 td_ptr->tdesc1.TCR |= (TCR0_UDPCK);
2620 td_ptr->tdesc1.TCR |= TCR0_IPCK;
2621 }
2622
2623 prev = index - 1;
2624 if (prev < 0)
2625 prev = vptr->options.numtx - 1;
2626 td_ptr->tdesc0.len |= OWNED_BY_NIC;
2627 vptr->tx.used[qnum]++;
2628 vptr->tx.curr[qnum] = (index + 1) % vptr->options.numtx;
2629
2630 if (AVAIL_TD(vptr, qnum) < 1)
2631 netif_stop_queue(dev);
2632
2633 td_ptr = &(vptr->tx.rings[qnum][prev]);
2634 td_ptr->td_buf[0].size |= TD_QUEUE;
2635 mac_tx_queue_wake(vptr->mac_regs, qnum);
2636
2637 spin_unlock_irqrestore(&vptr->lock, flags);
2638out:
2639 return NETDEV_TX_OK;
2640}
2641
2642static const struct net_device_ops velocity_netdev_ops = {
2643 .ndo_open = velocity_open,
2644 .ndo_stop = velocity_close,
2645 .ndo_start_xmit = velocity_xmit,
2646 .ndo_get_stats = velocity_get_stats,
2647 .ndo_validate_addr = eth_validate_addr,
2648 .ndo_set_mac_address = eth_mac_addr,
2649 .ndo_set_rx_mode = velocity_set_multi,
2650 .ndo_change_mtu = velocity_change_mtu,
2651 .ndo_do_ioctl = velocity_ioctl,
2652 .ndo_vlan_rx_add_vid = velocity_vlan_rx_add_vid,
2653 .ndo_vlan_rx_kill_vid = velocity_vlan_rx_kill_vid,
2654#ifdef CONFIG_NET_POLL_CONTROLLER
2655 .ndo_poll_controller = velocity_poll_controller,
2656#endif
2657};
2658
2659/**
2660 * velocity_init_info - init private data
2661 * @pdev: PCI device
2662 * @vptr: Velocity info
2663 * @info: Board type
2664 *
2665 * Set up the initial velocity_info struct for the device that has been
2666 * discovered.
2667 */
2668static void velocity_init_info(struct velocity_info *vptr,
2669 const struct velocity_info_tbl *info)
2670{
2671 vptr->chip_id = info->chip_id;
2672 vptr->tx.numq = info->txqueue;
2673 vptr->multicast_limit = MCAM_SIZE;
2674 spin_lock_init(&vptr->lock);
2675}
2676
2677/**
2678 * velocity_get_pci_info - retrieve PCI info for device
2679 * @vptr: velocity device
2680 * @pdev: PCI device it matches
2681 *
2682 * Retrieve the PCI configuration space data that interests us from
2683 * the kernel PCI layer
2684 */
2685static int velocity_get_pci_info(struct velocity_info *vptr)
2686{
2687 struct pci_dev *pdev = vptr->pdev;
2688
2689 pci_set_master(pdev);
2690
2691 vptr->ioaddr = pci_resource_start(pdev, 0);
2692 vptr->memaddr = pci_resource_start(pdev, 1);
2693
2694 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_IO)) {
2695 dev_err(&pdev->dev,
2696 "region #0 is not an I/O resource, aborting.\n");
2697 return -EINVAL;
2698 }
2699
2700 if ((pci_resource_flags(pdev, 1) & IORESOURCE_IO)) {
2701 dev_err(&pdev->dev,
2702 "region #1 is an I/O resource, aborting.\n");
2703 return -EINVAL;
2704 }
2705
2706 if (pci_resource_len(pdev, 1) < VELOCITY_IO_SIZE) {
2707 dev_err(&pdev->dev, "region #1 is too small.\n");
2708 return -EINVAL;
2709 }
2710
2711 return 0;
2712}
2713
2714/**
2715 * velocity_get_platform_info - retrieve platform info for device
2716 * @vptr: velocity device
2717 * @pdev: platform device it matches
2718 *
2719 * Retrieve the Platform configuration data that interests us
2720 */
2721static int velocity_get_platform_info(struct velocity_info *vptr)
2722{
2723 struct resource res;
2724 int ret;
2725
2726 if (of_get_property(vptr->dev->of_node, "no-eeprom", NULL))
2727 vptr->no_eeprom = 1;
2728
2729 ret = of_address_to_resource(vptr->dev->of_node, 0, &res);
2730 if (ret) {
2731 dev_err(vptr->dev, "unable to find memory address\n");
2732 return ret;
2733 }
2734
2735 vptr->memaddr = res.start;
2736
2737 if (resource_size(&res) < VELOCITY_IO_SIZE) {
2738 dev_err(vptr->dev, "memory region is too small.\n");
2739 return -EINVAL;
2740 }
2741
2742 return 0;
2743}
2744
2745/**
2746 * velocity_print_info - per driver data
2747 * @vptr: velocity
2748 *
2749 * Print per driver data as the kernel driver finds Velocity
2750 * hardware
2751 */
2752static void velocity_print_info(struct velocity_info *vptr)
2753{
2754 netdev_info(vptr->netdev, "%s - Ethernet Address: %pM\n",
2755 get_chip_name(vptr->chip_id), vptr->netdev->dev_addr);
2756}
2757
2758static u32 velocity_get_link(struct net_device *dev)
2759{
2760 struct velocity_info *vptr = netdev_priv(dev);
2761 struct mac_regs __iomem *regs = vptr->mac_regs;
2762 return BYTE_REG_BITS_IS_ON(PHYSR0_LINKGD, ®s->PHYSR0) ? 1 : 0;
2763}
2764
2765/**
2766 * velocity_probe - set up discovered velocity device
2767 * @pdev: PCI device
2768 * @ent: PCI device table entry that matched
2769 * @bustype: bus that device is connected to
2770 *
2771 * Configure a discovered adapter from scratch. Return a negative
2772 * errno error code on failure paths.
2773 */
2774static int velocity_probe(struct device *dev, int irq,
2775 const struct velocity_info_tbl *info,
2776 enum velocity_bus_type bustype)
2777{
2778 struct net_device *netdev;
2779 int i;
2780 struct velocity_info *vptr;
2781 struct mac_regs __iomem *regs;
2782 int ret = -ENOMEM;
2783
2784 /* FIXME: this driver, like almost all other ethernet drivers,
2785 * can support more than MAX_UNITS.
2786 */
2787 if (velocity_nics >= MAX_UNITS) {
2788 dev_notice(dev, "already found %d NICs.\n", velocity_nics);
2789 return -ENODEV;
2790 }
2791
2792 netdev = alloc_etherdev(sizeof(struct velocity_info));
2793 if (!netdev)
2794 goto out;
2795
2796 /* Chain it all together */
2797
2798 SET_NETDEV_DEV(netdev, dev);
2799 vptr = netdev_priv(netdev);
2800
2801 pr_info_once("%s Ver. %s\n", VELOCITY_FULL_DRV_NAM, VELOCITY_VERSION);
2802 pr_info_once("Copyright (c) 2002, 2003 VIA Networking Technologies, Inc.\n");
2803 pr_info_once("Copyright (c) 2004 Red Hat Inc.\n");
2804
2805 netdev->irq = irq;
2806 vptr->netdev = netdev;
2807 vptr->dev = dev;
2808
2809 velocity_init_info(vptr, info);
2810
2811 if (bustype == BUS_PCI) {
2812 vptr->pdev = to_pci_dev(dev);
2813
2814 ret = velocity_get_pci_info(vptr);
2815 if (ret < 0)
2816 goto err_free_dev;
2817 } else {
2818 vptr->pdev = NULL;
2819 ret = velocity_get_platform_info(vptr);
2820 if (ret < 0)
2821 goto err_free_dev;
2822 }
2823
2824 regs = ioremap(vptr->memaddr, VELOCITY_IO_SIZE);
2825 if (regs == NULL) {
2826 ret = -EIO;
2827 goto err_free_dev;
2828 }
2829
2830 vptr->mac_regs = regs;
2831 vptr->rev_id = readb(®s->rev_id);
2832
2833 mac_wol_reset(regs);
2834
2835 for (i = 0; i < 6; i++)
2836 netdev->dev_addr[i] = readb(®s->PAR[i]);
2837
2838
2839 velocity_get_options(&vptr->options, velocity_nics);
2840
2841 /*
2842 * Mask out the options cannot be set to the chip
2843 */
2844
2845 vptr->options.flags &= info->flags;
2846
2847 /*
2848 * Enable the chip specified capbilities
2849 */
2850
2851 vptr->flags = vptr->options.flags | (info->flags & 0xFF000000UL);
2852
2853 vptr->wol_opts = vptr->options.wol_opts;
2854 vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
2855
2856 vptr->phy_id = MII_GET_PHY_ID(vptr->mac_regs);
2857
2858 netdev->netdev_ops = &velocity_netdev_ops;
2859 netdev->ethtool_ops = &velocity_ethtool_ops;
2860 netif_napi_add(netdev, &vptr->napi, velocity_poll,
2861 VELOCITY_NAPI_WEIGHT);
2862
2863 netdev->hw_features = NETIF_F_IP_CSUM | NETIF_F_SG |
2864 NETIF_F_HW_VLAN_CTAG_TX;
2865 netdev->features |= NETIF_F_HW_VLAN_CTAG_TX |
2866 NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_VLAN_CTAG_RX |
2867 NETIF_F_IP_CSUM;
2868
2869 /* MTU range: 64 - 9000 */
2870 netdev->min_mtu = VELOCITY_MIN_MTU;
2871 netdev->max_mtu = VELOCITY_MAX_MTU;
2872
2873 ret = register_netdev(netdev);
2874 if (ret < 0)
2875 goto err_iounmap;
2876
2877 if (!velocity_get_link(netdev)) {
2878 netif_carrier_off(netdev);
2879 vptr->mii_status |= VELOCITY_LINK_FAIL;
2880 }
2881
2882 velocity_print_info(vptr);
2883 dev_set_drvdata(vptr->dev, netdev);
2884
2885 /* and leave the chip powered down */
2886
2887 velocity_set_power_state(vptr, PCI_D3hot);
2888 velocity_nics++;
2889out:
2890 return ret;
2891
2892err_iounmap:
2893 netif_napi_del(&vptr->napi);
2894 iounmap(regs);
2895err_free_dev:
2896 free_netdev(netdev);
2897 goto out;
2898}
2899
2900/**
2901 * velocity_remove - device unplug
2902 * @dev: device being removed
2903 *
2904 * Device unload callback. Called on an unplug or on module
2905 * unload for each active device that is present. Disconnects
2906 * the device from the network layer and frees all the resources
2907 */
2908static int velocity_remove(struct device *dev)
2909{
2910 struct net_device *netdev = dev_get_drvdata(dev);
2911 struct velocity_info *vptr = netdev_priv(netdev);
2912
2913 unregister_netdev(netdev);
2914 netif_napi_del(&vptr->napi);
2915 iounmap(vptr->mac_regs);
2916 free_netdev(netdev);
2917 velocity_nics--;
2918
2919 return 0;
2920}
2921
2922static int velocity_pci_probe(struct pci_dev *pdev,
2923 const struct pci_device_id *ent)
2924{
2925 const struct velocity_info_tbl *info =
2926 &chip_info_table[ent->driver_data];
2927 int ret;
2928
2929 ret = pci_enable_device(pdev);
2930 if (ret < 0)
2931 return ret;
2932
2933 ret = pci_request_regions(pdev, VELOCITY_NAME);
2934 if (ret < 0) {
2935 dev_err(&pdev->dev, "No PCI resources.\n");
2936 goto fail1;
2937 }
2938
2939 ret = velocity_probe(&pdev->dev, pdev->irq, info, BUS_PCI);
2940 if (ret == 0)
2941 return 0;
2942
2943 pci_release_regions(pdev);
2944fail1:
2945 pci_disable_device(pdev);
2946 return ret;
2947}
2948
2949static void velocity_pci_remove(struct pci_dev *pdev)
2950{
2951 velocity_remove(&pdev->dev);
2952
2953 pci_release_regions(pdev);
2954 pci_disable_device(pdev);
2955}
2956
2957static int velocity_platform_probe(struct platform_device *pdev)
2958{
2959 const struct of_device_id *of_id;
2960 const struct velocity_info_tbl *info;
2961 int irq;
2962
2963 of_id = of_match_device(velocity_of_ids, &pdev->dev);
2964 if (!of_id)
2965 return -EINVAL;
2966 info = of_id->data;
2967
2968 irq = irq_of_parse_and_map(pdev->dev.of_node, 0);
2969 if (!irq)
2970 return -EINVAL;
2971
2972 return velocity_probe(&pdev->dev, irq, info, BUS_PLATFORM);
2973}
2974
2975static int velocity_platform_remove(struct platform_device *pdev)
2976{
2977 velocity_remove(&pdev->dev);
2978
2979 return 0;
2980}
2981
2982#ifdef CONFIG_PM_SLEEP
2983/**
2984 * wol_calc_crc - WOL CRC
2985 * @pattern: data pattern
2986 * @mask_pattern: mask
2987 *
2988 * Compute the wake on lan crc hashes for the packet header
2989 * we are interested in.
2990 */
2991static u16 wol_calc_crc(int size, u8 *pattern, u8 *mask_pattern)
2992{
2993 u16 crc = 0xFFFF;
2994 u8 mask;
2995 int i, j;
2996
2997 for (i = 0; i < size; i++) {
2998 mask = mask_pattern[i];
2999
3000 /* Skip this loop if the mask equals to zero */
3001 if (mask == 0x00)
3002 continue;
3003
3004 for (j = 0; j < 8; j++) {
3005 if ((mask & 0x01) == 0) {
3006 mask >>= 1;
3007 continue;
3008 }
3009 mask >>= 1;
3010 crc = crc_ccitt(crc, &(pattern[i * 8 + j]), 1);
3011 }
3012 }
3013 /* Finally, invert the result once to get the correct data */
3014 crc = ~crc;
3015 return bitrev32(crc) >> 16;
3016}
3017
3018/**
3019 * velocity_set_wol - set up for wake on lan
3020 * @vptr: velocity to set WOL status on
3021 *
3022 * Set a card up for wake on lan either by unicast or by
3023 * ARP packet.
3024 *
3025 * FIXME: check static buffer is safe here
3026 */
3027static int velocity_set_wol(struct velocity_info *vptr)
3028{
3029 struct mac_regs __iomem *regs = vptr->mac_regs;
3030 enum speed_opt spd_dpx = vptr->options.spd_dpx;
3031 static u8 buf[256];
3032 int i;
3033
3034 static u32 mask_pattern[2][4] = {
3035 {0x00203000, 0x000003C0, 0x00000000, 0x0000000}, /* ARP */
3036 {0xfffff000, 0xffffffff, 0xffffffff, 0x000ffff} /* Magic Packet */
3037 };
3038
3039 writew(0xFFFF, ®s->WOLCRClr);
3040 writeb(WOLCFG_SAB | WOLCFG_SAM, ®s->WOLCFGSet);
3041 writew(WOLCR_MAGIC_EN, ®s->WOLCRSet);
3042
3043 /*
3044 if (vptr->wol_opts & VELOCITY_WOL_PHY)
3045 writew((WOLCR_LINKON_EN|WOLCR_LINKOFF_EN), ®s->WOLCRSet);
3046 */
3047
3048 if (vptr->wol_opts & VELOCITY_WOL_UCAST)
3049 writew(WOLCR_UNICAST_EN, ®s->WOLCRSet);
3050
3051 if (vptr->wol_opts & VELOCITY_WOL_ARP) {
3052 struct arp_packet *arp = (struct arp_packet *) buf;
3053 u16 crc;
3054 memset(buf, 0, sizeof(struct arp_packet) + 7);
3055
3056 for (i = 0; i < 4; i++)
3057 writel(mask_pattern[0][i], ®s->ByteMask[0][i]);
3058
3059 arp->type = htons(ETH_P_ARP);
3060 arp->ar_op = htons(1);
3061
3062 memcpy(arp->ar_tip, vptr->ip_addr, 4);
3063
3064 crc = wol_calc_crc((sizeof(struct arp_packet) + 7) / 8, buf,
3065 (u8 *) & mask_pattern[0][0]);
3066
3067 writew(crc, ®s->PatternCRC[0]);
3068 writew(WOLCR_ARP_EN, ®s->WOLCRSet);
3069 }
3070
3071 BYTE_REG_BITS_ON(PWCFG_WOLTYPE, ®s->PWCFGSet);
3072 BYTE_REG_BITS_ON(PWCFG_LEGACY_WOLEN, ®s->PWCFGSet);
3073
3074 writew(0x0FFF, ®s->WOLSRClr);
3075
3076 if (spd_dpx == SPD_DPX_1000_FULL)
3077 goto mac_done;
3078
3079 if (spd_dpx != SPD_DPX_AUTO)
3080 goto advertise_done;
3081
3082 if (vptr->mii_status & VELOCITY_AUTONEG_ENABLE) {
3083 if (PHYID_GET_PHY_ID(vptr->phy_id) == PHYID_CICADA_CS8201)
3084 MII_REG_BITS_ON(AUXCR_MDPPS, MII_NCONFIG, vptr->mac_regs);
3085
3086 MII_REG_BITS_OFF(ADVERTISE_1000FULL | ADVERTISE_1000HALF, MII_CTRL1000, vptr->mac_regs);
3087 }
3088
3089 if (vptr->mii_status & VELOCITY_SPEED_1000)
3090 MII_REG_BITS_ON(BMCR_ANRESTART, MII_BMCR, vptr->mac_regs);
3091
3092advertise_done:
3093 BYTE_REG_BITS_ON(CHIPGCR_FCMODE, ®s->CHIPGCR);
3094
3095 {
3096 u8 GCR;
3097 GCR = readb(®s->CHIPGCR);
3098 GCR = (GCR & ~CHIPGCR_FCGMII) | CHIPGCR_FCFDX;
3099 writeb(GCR, ®s->CHIPGCR);
3100 }
3101
3102mac_done:
3103 BYTE_REG_BITS_OFF(ISR_PWEI, ®s->ISR);
3104 /* Turn on SWPTAG just before entering power mode */
3105 BYTE_REG_BITS_ON(STICKHW_SWPTAG, ®s->STICKHW);
3106 /* Go to bed ..... */
3107 BYTE_REG_BITS_ON((STICKHW_DS1 | STICKHW_DS0), ®s->STICKHW);
3108
3109 return 0;
3110}
3111
3112/**
3113 * velocity_save_context - save registers
3114 * @vptr: velocity
3115 * @context: buffer for stored context
3116 *
3117 * Retrieve the current configuration from the velocity hardware
3118 * and stash it in the context structure, for use by the context
3119 * restore functions. This allows us to save things we need across
3120 * power down states
3121 */
3122static void velocity_save_context(struct velocity_info *vptr, struct velocity_context *context)
3123{
3124 struct mac_regs __iomem *regs = vptr->mac_regs;
3125 u16 i;
3126 u8 __iomem *ptr = (u8 __iomem *)regs;
3127
3128 for (i = MAC_REG_PAR; i < MAC_REG_CR0_CLR; i += 4)
3129 *((u32 *) (context->mac_reg + i)) = readl(ptr + i);
3130
3131 for (i = MAC_REG_MAR; i < MAC_REG_TDCSR_CLR; i += 4)
3132 *((u32 *) (context->mac_reg + i)) = readl(ptr + i);
3133
3134 for (i = MAC_REG_RDBASE_LO; i < MAC_REG_FIFO_TEST0; i += 4)
3135 *((u32 *) (context->mac_reg + i)) = readl(ptr + i);
3136
3137}
3138
3139static int velocity_suspend(struct device *dev)
3140{
3141 struct net_device *netdev = dev_get_drvdata(dev);
3142 struct velocity_info *vptr = netdev_priv(netdev);
3143 unsigned long flags;
3144
3145 if (!netif_running(vptr->netdev))
3146 return 0;
3147
3148 netif_device_detach(vptr->netdev);
3149
3150 spin_lock_irqsave(&vptr->lock, flags);
3151 if (vptr->pdev)
3152 pci_save_state(vptr->pdev);
3153
3154 if (vptr->flags & VELOCITY_FLAGS_WOL_ENABLED) {
3155 velocity_get_ip(vptr);
3156 velocity_save_context(vptr, &vptr->context);
3157 velocity_shutdown(vptr);
3158 velocity_set_wol(vptr);
3159 if (vptr->pdev)
3160 pci_enable_wake(vptr->pdev, PCI_D3hot, 1);
3161 velocity_set_power_state(vptr, PCI_D3hot);
3162 } else {
3163 velocity_save_context(vptr, &vptr->context);
3164 velocity_shutdown(vptr);
3165 if (vptr->pdev)
3166 pci_disable_device(vptr->pdev);
3167 velocity_set_power_state(vptr, PCI_D3hot);
3168 }
3169
3170 spin_unlock_irqrestore(&vptr->lock, flags);
3171 return 0;
3172}
3173
3174/**
3175 * velocity_restore_context - restore registers
3176 * @vptr: velocity
3177 * @context: buffer for stored context
3178 *
3179 * Reload the register configuration from the velocity context
3180 * created by velocity_save_context.
3181 */
3182static void velocity_restore_context(struct velocity_info *vptr, struct velocity_context *context)
3183{
3184 struct mac_regs __iomem *regs = vptr->mac_regs;
3185 int i;
3186 u8 __iomem *ptr = (u8 __iomem *)regs;
3187
3188 for (i = MAC_REG_PAR; i < MAC_REG_CR0_SET; i += 4)
3189 writel(*((u32 *) (context->mac_reg + i)), ptr + i);
3190
3191 /* Just skip cr0 */
3192 for (i = MAC_REG_CR1_SET; i < MAC_REG_CR0_CLR; i++) {
3193 /* Clear */
3194 writeb(~(*((u8 *) (context->mac_reg + i))), ptr + i + 4);
3195 /* Set */
3196 writeb(*((u8 *) (context->mac_reg + i)), ptr + i);
3197 }
3198
3199 for (i = MAC_REG_MAR; i < MAC_REG_IMR; i += 4)
3200 writel(*((u32 *) (context->mac_reg + i)), ptr + i);
3201
3202 for (i = MAC_REG_RDBASE_LO; i < MAC_REG_FIFO_TEST0; i += 4)
3203 writel(*((u32 *) (context->mac_reg + i)), ptr + i);
3204
3205 for (i = MAC_REG_TDCSR_SET; i <= MAC_REG_RDCSR_SET; i++)
3206 writeb(*((u8 *) (context->mac_reg + i)), ptr + i);
3207}
3208
3209static int velocity_resume(struct device *dev)
3210{
3211 struct net_device *netdev = dev_get_drvdata(dev);
3212 struct velocity_info *vptr = netdev_priv(netdev);
3213 unsigned long flags;
3214 int i;
3215
3216 if (!netif_running(vptr->netdev))
3217 return 0;
3218
3219 velocity_set_power_state(vptr, PCI_D0);
3220
3221 if (vptr->pdev) {
3222 pci_enable_wake(vptr->pdev, PCI_D0, 0);
3223 pci_restore_state(vptr->pdev);
3224 }
3225
3226 mac_wol_reset(vptr->mac_regs);
3227
3228 spin_lock_irqsave(&vptr->lock, flags);
3229 velocity_restore_context(vptr, &vptr->context);
3230 velocity_init_registers(vptr, VELOCITY_INIT_WOL);
3231 mac_disable_int(vptr->mac_regs);
3232
3233 velocity_tx_srv(vptr);
3234
3235 for (i = 0; i < vptr->tx.numq; i++) {
3236 if (vptr->tx.used[i])
3237 mac_tx_queue_wake(vptr->mac_regs, i);
3238 }
3239
3240 mac_enable_int(vptr->mac_regs);
3241 spin_unlock_irqrestore(&vptr->lock, flags);
3242 netif_device_attach(vptr->netdev);
3243
3244 return 0;
3245}
3246#endif /* CONFIG_PM_SLEEP */
3247
3248static SIMPLE_DEV_PM_OPS(velocity_pm_ops, velocity_suspend, velocity_resume);
3249
3250/*
3251 * Definition for our device driver. The PCI layer interface
3252 * uses this to handle all our card discover and plugging
3253 */
3254static struct pci_driver velocity_pci_driver = {
3255 .name = VELOCITY_NAME,
3256 .id_table = velocity_pci_id_table,
3257 .probe = velocity_pci_probe,
3258 .remove = velocity_pci_remove,
3259 .driver = {
3260 .pm = &velocity_pm_ops,
3261 },
3262};
3263
3264static struct platform_driver velocity_platform_driver = {
3265 .probe = velocity_platform_probe,
3266 .remove = velocity_platform_remove,
3267 .driver = {
3268 .name = "via-velocity",
3269 .of_match_table = velocity_of_ids,
3270 .pm = &velocity_pm_ops,
3271 },
3272};
3273
3274/**
3275 * velocity_ethtool_up - pre hook for ethtool
3276 * @dev: network device
3277 *
3278 * Called before an ethtool operation. We need to make sure the
3279 * chip is out of D3 state before we poke at it. In case of ethtool
3280 * ops nesting, only wake the device up in the outermost block.
3281 */
3282static int velocity_ethtool_up(struct net_device *dev)
3283{
3284 struct velocity_info *vptr = netdev_priv(dev);
3285
3286 if (vptr->ethtool_ops_nesting == U32_MAX)
3287 return -EBUSY;
3288 if (!vptr->ethtool_ops_nesting++ && !netif_running(dev))
3289 velocity_set_power_state(vptr, PCI_D0);
3290 return 0;
3291}
3292
3293/**
3294 * velocity_ethtool_down - post hook for ethtool
3295 * @dev: network device
3296 *
3297 * Called after an ethtool operation. Restore the chip back to D3
3298 * state if it isn't running. In case of ethtool ops nesting, only
3299 * put the device to sleep in the outermost block.
3300 */
3301static void velocity_ethtool_down(struct net_device *dev)
3302{
3303 struct velocity_info *vptr = netdev_priv(dev);
3304
3305 if (!--vptr->ethtool_ops_nesting && !netif_running(dev))
3306 velocity_set_power_state(vptr, PCI_D3hot);
3307}
3308
3309static int velocity_get_link_ksettings(struct net_device *dev,
3310 struct ethtool_link_ksettings *cmd)
3311{
3312 struct velocity_info *vptr = netdev_priv(dev);
3313 struct mac_regs __iomem *regs = vptr->mac_regs;
3314 u32 status;
3315 u32 supported, advertising;
3316
3317 status = check_connection_type(vptr->mac_regs);
3318
3319 supported = SUPPORTED_TP |
3320 SUPPORTED_Autoneg |
3321 SUPPORTED_10baseT_Half |
3322 SUPPORTED_10baseT_Full |
3323 SUPPORTED_100baseT_Half |
3324 SUPPORTED_100baseT_Full |
3325 SUPPORTED_1000baseT_Half |
3326 SUPPORTED_1000baseT_Full;
3327
3328 advertising = ADVERTISED_TP | ADVERTISED_Autoneg;
3329 if (vptr->options.spd_dpx == SPD_DPX_AUTO) {
3330 advertising |=
3331 ADVERTISED_10baseT_Half |
3332 ADVERTISED_10baseT_Full |
3333 ADVERTISED_100baseT_Half |
3334 ADVERTISED_100baseT_Full |
3335 ADVERTISED_1000baseT_Half |
3336 ADVERTISED_1000baseT_Full;
3337 } else {
3338 switch (vptr->options.spd_dpx) {
3339 case SPD_DPX_1000_FULL:
3340 advertising |= ADVERTISED_1000baseT_Full;
3341 break;
3342 case SPD_DPX_100_HALF:
3343 advertising |= ADVERTISED_100baseT_Half;
3344 break;
3345 case SPD_DPX_100_FULL:
3346 advertising |= ADVERTISED_100baseT_Full;
3347 break;
3348 case SPD_DPX_10_HALF:
3349 advertising |= ADVERTISED_10baseT_Half;
3350 break;
3351 case SPD_DPX_10_FULL:
3352 advertising |= ADVERTISED_10baseT_Full;
3353 break;
3354 default:
3355 break;
3356 }
3357 }
3358
3359 if (status & VELOCITY_SPEED_1000)
3360 cmd->base.speed = SPEED_1000;
3361 else if (status & VELOCITY_SPEED_100)
3362 cmd->base.speed = SPEED_100;
3363 else
3364 cmd->base.speed = SPEED_10;
3365
3366 cmd->base.autoneg = (status & VELOCITY_AUTONEG_ENABLE) ?
3367 AUTONEG_ENABLE : AUTONEG_DISABLE;
3368 cmd->base.port = PORT_TP;
3369 cmd->base.phy_address = readb(®s->MIIADR) & 0x1F;
3370
3371 if (status & VELOCITY_DUPLEX_FULL)
3372 cmd->base.duplex = DUPLEX_FULL;
3373 else
3374 cmd->base.duplex = DUPLEX_HALF;
3375
3376 ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported,
3377 supported);
3378 ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.advertising,
3379 advertising);
3380
3381 return 0;
3382}
3383
3384static int velocity_set_link_ksettings(struct net_device *dev,
3385 const struct ethtool_link_ksettings *cmd)
3386{
3387 struct velocity_info *vptr = netdev_priv(dev);
3388 u32 speed = cmd->base.speed;
3389 u32 curr_status;
3390 u32 new_status = 0;
3391 int ret = 0;
3392
3393 curr_status = check_connection_type(vptr->mac_regs);
3394 curr_status &= (~VELOCITY_LINK_FAIL);
3395
3396 new_status |= ((cmd->base.autoneg) ? VELOCITY_AUTONEG_ENABLE : 0);
3397 new_status |= ((speed == SPEED_1000) ? VELOCITY_SPEED_1000 : 0);
3398 new_status |= ((speed == SPEED_100) ? VELOCITY_SPEED_100 : 0);
3399 new_status |= ((speed == SPEED_10) ? VELOCITY_SPEED_10 : 0);
3400 new_status |= ((cmd->base.duplex == DUPLEX_FULL) ?
3401 VELOCITY_DUPLEX_FULL : 0);
3402
3403 if ((new_status & VELOCITY_AUTONEG_ENABLE) &&
3404 (new_status != (curr_status | VELOCITY_AUTONEG_ENABLE))) {
3405 ret = -EINVAL;
3406 } else {
3407 enum speed_opt spd_dpx;
3408
3409 if (new_status & VELOCITY_AUTONEG_ENABLE)
3410 spd_dpx = SPD_DPX_AUTO;
3411 else if ((new_status & VELOCITY_SPEED_1000) &&
3412 (new_status & VELOCITY_DUPLEX_FULL)) {
3413 spd_dpx = SPD_DPX_1000_FULL;
3414 } else if (new_status & VELOCITY_SPEED_100)
3415 spd_dpx = (new_status & VELOCITY_DUPLEX_FULL) ?
3416 SPD_DPX_100_FULL : SPD_DPX_100_HALF;
3417 else if (new_status & VELOCITY_SPEED_10)
3418 spd_dpx = (new_status & VELOCITY_DUPLEX_FULL) ?
3419 SPD_DPX_10_FULL : SPD_DPX_10_HALF;
3420 else
3421 return -EOPNOTSUPP;
3422
3423 vptr->options.spd_dpx = spd_dpx;
3424
3425 velocity_set_media_mode(vptr, new_status);
3426 }
3427
3428 return ret;
3429}
3430
3431static void velocity_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
3432{
3433 struct velocity_info *vptr = netdev_priv(dev);
3434
3435 strlcpy(info->driver, VELOCITY_NAME, sizeof(info->driver));
3436 strlcpy(info->version, VELOCITY_VERSION, sizeof(info->version));
3437 if (vptr->pdev)
3438 strlcpy(info->bus_info, pci_name(vptr->pdev),
3439 sizeof(info->bus_info));
3440 else
3441 strlcpy(info->bus_info, "platform", sizeof(info->bus_info));
3442}
3443
3444static void velocity_ethtool_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
3445{
3446 struct velocity_info *vptr = netdev_priv(dev);
3447 wol->supported = WAKE_PHY | WAKE_MAGIC | WAKE_UCAST | WAKE_ARP;
3448 wol->wolopts |= WAKE_MAGIC;
3449 /*
3450 if (vptr->wol_opts & VELOCITY_WOL_PHY)
3451 wol.wolopts|=WAKE_PHY;
3452 */
3453 if (vptr->wol_opts & VELOCITY_WOL_UCAST)
3454 wol->wolopts |= WAKE_UCAST;
3455 if (vptr->wol_opts & VELOCITY_WOL_ARP)
3456 wol->wolopts |= WAKE_ARP;
3457 memcpy(&wol->sopass, vptr->wol_passwd, 6);
3458}
3459
3460static int velocity_ethtool_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
3461{
3462 struct velocity_info *vptr = netdev_priv(dev);
3463
3464 if (!(wol->wolopts & (WAKE_PHY | WAKE_MAGIC | WAKE_UCAST | WAKE_ARP)))
3465 return -EFAULT;
3466 vptr->wol_opts = VELOCITY_WOL_MAGIC;
3467
3468 /*
3469 if (wol.wolopts & WAKE_PHY) {
3470 vptr->wol_opts|=VELOCITY_WOL_PHY;
3471 vptr->flags |=VELOCITY_FLAGS_WOL_ENABLED;
3472 }
3473 */
3474
3475 if (wol->wolopts & WAKE_MAGIC) {
3476 vptr->wol_opts |= VELOCITY_WOL_MAGIC;
3477 vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
3478 }
3479 if (wol->wolopts & WAKE_UCAST) {
3480 vptr->wol_opts |= VELOCITY_WOL_UCAST;
3481 vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
3482 }
3483 if (wol->wolopts & WAKE_ARP) {
3484 vptr->wol_opts |= VELOCITY_WOL_ARP;
3485 vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
3486 }
3487 memcpy(vptr->wol_passwd, wol->sopass, 6);
3488 return 0;
3489}
3490
3491static int get_pending_timer_val(int val)
3492{
3493 int mult_bits = val >> 6;
3494 int mult = 1;
3495
3496 switch (mult_bits)
3497 {
3498 case 1:
3499 mult = 4; break;
3500 case 2:
3501 mult = 16; break;
3502 case 3:
3503 mult = 64; break;
3504 case 0:
3505 default:
3506 break;
3507 }
3508
3509 return (val & 0x3f) * mult;
3510}
3511
3512static void set_pending_timer_val(int *val, u32 us)
3513{
3514 u8 mult = 0;
3515 u8 shift = 0;
3516
3517 if (us >= 0x3f) {
3518 mult = 1; /* mult with 4 */
3519 shift = 2;
3520 }
3521 if (us >= 0x3f * 4) {
3522 mult = 2; /* mult with 16 */
3523 shift = 4;
3524 }
3525 if (us >= 0x3f * 16) {
3526 mult = 3; /* mult with 64 */
3527 shift = 6;
3528 }
3529
3530 *val = (mult << 6) | ((us >> shift) & 0x3f);
3531}
3532
3533
3534static int velocity_get_coalesce(struct net_device *dev,
3535 struct ethtool_coalesce *ecmd)
3536{
3537 struct velocity_info *vptr = netdev_priv(dev);
3538
3539 ecmd->tx_max_coalesced_frames = vptr->options.tx_intsup;
3540 ecmd->rx_max_coalesced_frames = vptr->options.rx_intsup;
3541
3542 ecmd->rx_coalesce_usecs = get_pending_timer_val(vptr->options.rxqueue_timer);
3543 ecmd->tx_coalesce_usecs = get_pending_timer_val(vptr->options.txqueue_timer);
3544
3545 return 0;
3546}
3547
3548static int velocity_set_coalesce(struct net_device *dev,
3549 struct ethtool_coalesce *ecmd)
3550{
3551 struct velocity_info *vptr = netdev_priv(dev);
3552 int max_us = 0x3f * 64;
3553 unsigned long flags;
3554
3555 /* 6 bits of */
3556 if (ecmd->tx_coalesce_usecs > max_us)
3557 return -EINVAL;
3558 if (ecmd->rx_coalesce_usecs > max_us)
3559 return -EINVAL;
3560
3561 if (ecmd->tx_max_coalesced_frames > 0xff)
3562 return -EINVAL;
3563 if (ecmd->rx_max_coalesced_frames > 0xff)
3564 return -EINVAL;
3565
3566 vptr->options.rx_intsup = ecmd->rx_max_coalesced_frames;
3567 vptr->options.tx_intsup = ecmd->tx_max_coalesced_frames;
3568
3569 set_pending_timer_val(&vptr->options.rxqueue_timer,
3570 ecmd->rx_coalesce_usecs);
3571 set_pending_timer_val(&vptr->options.txqueue_timer,
3572 ecmd->tx_coalesce_usecs);
3573
3574 /* Setup the interrupt suppression and queue timers */
3575 spin_lock_irqsave(&vptr->lock, flags);
3576 mac_disable_int(vptr->mac_regs);
3577 setup_adaptive_interrupts(vptr);
3578 setup_queue_timers(vptr);
3579
3580 mac_write_int_mask(vptr->int_mask, vptr->mac_regs);
3581 mac_clear_isr(vptr->mac_regs);
3582 mac_enable_int(vptr->mac_regs);
3583 spin_unlock_irqrestore(&vptr->lock, flags);
3584
3585 return 0;
3586}
3587
3588static const char velocity_gstrings[][ETH_GSTRING_LEN] = {
3589 "rx_all",
3590 "rx_ok",
3591 "tx_ok",
3592 "rx_error",
3593 "rx_runt_ok",
3594 "rx_runt_err",
3595 "rx_64",
3596 "tx_64",
3597 "rx_65_to_127",
3598 "tx_65_to_127",
3599 "rx_128_to_255",
3600 "tx_128_to_255",
3601 "rx_256_to_511",
3602 "tx_256_to_511",
3603 "rx_512_to_1023",
3604 "tx_512_to_1023",
3605 "rx_1024_to_1518",
3606 "tx_1024_to_1518",
3607 "tx_ether_collisions",
3608 "rx_crc_errors",
3609 "rx_jumbo",
3610 "tx_jumbo",
3611 "rx_mac_control_frames",
3612 "tx_mac_control_frames",
3613 "rx_frame_alignment_errors",
3614 "rx_long_ok",
3615 "rx_long_err",
3616 "tx_sqe_errors",
3617 "rx_no_buf",
3618 "rx_symbol_errors",
3619 "in_range_length_errors",
3620 "late_collisions"
3621};
3622
3623static void velocity_get_strings(struct net_device *dev, u32 sset, u8 *data)
3624{
3625 switch (sset) {
3626 case ETH_SS_STATS:
3627 memcpy(data, *velocity_gstrings, sizeof(velocity_gstrings));
3628 break;
3629 }
3630}
3631
3632static int velocity_get_sset_count(struct net_device *dev, int sset)
3633{
3634 switch (sset) {
3635 case ETH_SS_STATS:
3636 return ARRAY_SIZE(velocity_gstrings);
3637 default:
3638 return -EOPNOTSUPP;
3639 }
3640}
3641
3642static void velocity_get_ethtool_stats(struct net_device *dev,
3643 struct ethtool_stats *stats, u64 *data)
3644{
3645 if (netif_running(dev)) {
3646 struct velocity_info *vptr = netdev_priv(dev);
3647 u32 *p = vptr->mib_counter;
3648 int i;
3649
3650 spin_lock_irq(&vptr->lock);
3651 velocity_update_hw_mibs(vptr);
3652 spin_unlock_irq(&vptr->lock);
3653
3654 for (i = 0; i < ARRAY_SIZE(velocity_gstrings); i++)
3655 *data++ = *p++;
3656 }
3657}
3658
3659static const struct ethtool_ops velocity_ethtool_ops = {
3660 .supported_coalesce_params = ETHTOOL_COALESCE_USECS |
3661 ETHTOOL_COALESCE_MAX_FRAMES,
3662 .get_drvinfo = velocity_get_drvinfo,
3663 .get_wol = velocity_ethtool_get_wol,
3664 .set_wol = velocity_ethtool_set_wol,
3665 .get_link = velocity_get_link,
3666 .get_strings = velocity_get_strings,
3667 .get_sset_count = velocity_get_sset_count,
3668 .get_ethtool_stats = velocity_get_ethtool_stats,
3669 .get_coalesce = velocity_get_coalesce,
3670 .set_coalesce = velocity_set_coalesce,
3671 .begin = velocity_ethtool_up,
3672 .complete = velocity_ethtool_down,
3673 .get_link_ksettings = velocity_get_link_ksettings,
3674 .set_link_ksettings = velocity_set_link_ksettings,
3675};
3676
3677#if defined(CONFIG_PM) && defined(CONFIG_INET)
3678static int velocity_netdev_event(struct notifier_block *nb, unsigned long notification, void *ptr)
3679{
3680 struct in_ifaddr *ifa = ptr;
3681 struct net_device *dev = ifa->ifa_dev->dev;
3682
3683 if (dev_net(dev) == &init_net &&
3684 dev->netdev_ops == &velocity_netdev_ops)
3685 velocity_get_ip(netdev_priv(dev));
3686
3687 return NOTIFY_DONE;
3688}
3689
3690static struct notifier_block velocity_inetaddr_notifier = {
3691 .notifier_call = velocity_netdev_event,
3692};
3693
3694static void velocity_register_notifier(void)
3695{
3696 register_inetaddr_notifier(&velocity_inetaddr_notifier);
3697}
3698
3699static void velocity_unregister_notifier(void)
3700{
3701 unregister_inetaddr_notifier(&velocity_inetaddr_notifier);
3702}
3703
3704#else
3705
3706#define velocity_register_notifier() do {} while (0)
3707#define velocity_unregister_notifier() do {} while (0)
3708
3709#endif /* defined(CONFIG_PM) && defined(CONFIG_INET) */
3710
3711/**
3712 * velocity_init_module - load time function
3713 *
3714 * Called when the velocity module is loaded. The PCI driver
3715 * is registered with the PCI layer, and in turn will call
3716 * the probe functions for each velocity adapter installed
3717 * in the system.
3718 */
3719static int __init velocity_init_module(void)
3720{
3721 int ret_pci, ret_platform;
3722
3723 velocity_register_notifier();
3724
3725 ret_pci = pci_register_driver(&velocity_pci_driver);
3726 ret_platform = platform_driver_register(&velocity_platform_driver);
3727
3728 /* if both_registers failed, remove the notifier */
3729 if ((ret_pci < 0) && (ret_platform < 0)) {
3730 velocity_unregister_notifier();
3731 return ret_pci;
3732 }
3733
3734 return 0;
3735}
3736
3737/**
3738 * velocity_cleanup - module unload
3739 *
3740 * When the velocity hardware is unloaded this function is called.
3741 * It will clean up the notifiers and the unregister the PCI
3742 * driver interface for this hardware. This in turn cleans up
3743 * all discovered interfaces before returning from the function
3744 */
3745static void __exit velocity_cleanup_module(void)
3746{
3747 velocity_unregister_notifier();
3748
3749 pci_unregister_driver(&velocity_pci_driver);
3750 platform_driver_unregister(&velocity_platform_driver);
3751}
3752
3753module_init(velocity_init_module);
3754module_exit(velocity_cleanup_module);