blob: 42dffd3e5795b6737943170e0e6e4ccfe4043f62 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * This code is derived from the VIA reference driver (copyright message
3 * below) provided to Red Hat by VIA Networking Technologies, Inc. for
4 * addition to the Linux kernel.
5 *
6 * The code has been merged into one source file, cleaned up to follow
7 * Linux coding style, ported to the Linux 2.6 kernel tree and cleaned
8 * for 64bit hardware platforms.
9 *
10 * TODO
Linus Torvalds1da177e2005-04-16 15:20:36 -070011 * rx_copybreak/alignment
Linus Torvalds1da177e2005-04-16 15:20:36 -070012 * More testing
13 *
Alan Cox113aa832008-10-13 19:01:08 -070014 * The changes are (c) Copyright 2004, Red Hat Inc. <alan@lxorguk.ukuu.org.uk>
Linus Torvalds1da177e2005-04-16 15:20:36 -070015 * Additional fixes and clean up: Francois Romieu
16 *
17 * This source has not been verified for use in safety critical systems.
18 *
19 * Please direct queries about the revamped driver to the linux-kernel
20 * list not VIA.
21 *
22 * Original code:
23 *
24 * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
25 * All rights reserved.
26 *
27 * This software may be redistributed and/or modified under
28 * the terms of the GNU General Public License as published by the Free
29 * Software Foundation; either version 2 of the License, or
30 * any later version.
31 *
32 * This program is distributed in the hope that it will be useful, but
33 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
34 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
35 * for more details.
36 *
37 * Author: Chuang Liang-Shing, AJ Jiang
38 *
39 * Date: Jan 24, 2003
40 *
41 * MODULE_LICENSE("GPL");
42 *
43 */
44
45
46#include <linux/module.h>
47#include <linux/types.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070048#include <linux/init.h>
49#include <linux/mm.h>
50#include <linux/errno.h>
51#include <linux/ioport.h>
52#include <linux/pci.h>
53#include <linux/kernel.h>
54#include <linux/netdevice.h>
55#include <linux/etherdevice.h>
56#include <linux/skbuff.h>
57#include <linux/delay.h>
58#include <linux/timer.h>
59#include <linux/slab.h>
60#include <linux/interrupt.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070061#include <linux/string.h>
62#include <linux/wait.h>
Dave Jonesc4067402009-07-20 17:35:21 +000063#include <linux/io.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070064#include <linux/if.h>
Dave Jonesc4067402009-07-20 17:35:21 +000065#include <linux/uaccess.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070066#include <linux/proc_fs.h>
67#include <linux/inetdevice.h>
68#include <linux/reboot.h>
69#include <linux/ethtool.h>
70#include <linux/mii.h>
71#include <linux/in.h>
72#include <linux/if_arp.h>
Stephen Hemminger501e4d22007-08-24 13:56:49 -070073#include <linux/if_vlan.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070074#include <linux/ip.h>
75#include <linux/tcp.h>
76#include <linux/udp.h>
77#include <linux/crc-ccitt.h>
78#include <linux/crc32.h>
79
80#include "via-velocity.h"
81
82
Dave Jonesc4067402009-07-20 17:35:21 +000083static int velocity_nics;
Linus Torvalds1da177e2005-04-16 15:20:36 -070084static int msglevel = MSG_LEVEL_INFO;
85
Stephen Hemminger01faccb2007-08-24 14:40:45 -070086/**
87 * mac_get_cam_mask - Read a CAM mask
88 * @regs: register block for this velocity
89 * @mask: buffer to store mask
90 *
91 * Fetch the mask bits of the selected CAM and store them into the
92 * provided mask buffer.
93 */
Dave Jonesc4067402009-07-20 17:35:21 +000094static void mac_get_cam_mask(struct mac_regs __iomem *regs, u8 *mask)
Stephen Hemminger01faccb2007-08-24 14:40:45 -070095{
96 int i;
97
98 /* Select CAM mask */
99 BYTE_REG_BITS_SET(CAMCR_PS_CAM_MASK, CAMCR_PS1 | CAMCR_PS0, &regs->CAMCR);
100
101 writeb(0, &regs->CAMADDR);
102
103 /* read mask */
104 for (i = 0; i < 8; i++)
105 *mask++ = readb(&(regs->MARCAM[i]));
106
107 /* disable CAMEN */
108 writeb(0, &regs->CAMADDR);
109
110 /* Select mar */
111 BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, &regs->CAMCR);
Stephen Hemminger01faccb2007-08-24 14:40:45 -0700112}
113
114
115/**
116 * mac_set_cam_mask - Set a CAM mask
117 * @regs: register block for this velocity
118 * @mask: CAM mask to load
119 *
120 * Store a new mask into a CAM
121 */
Dave Jonesc4067402009-07-20 17:35:21 +0000122static void mac_set_cam_mask(struct mac_regs __iomem *regs, u8 *mask)
Stephen Hemminger01faccb2007-08-24 14:40:45 -0700123{
124 int i;
125 /* Select CAM mask */
126 BYTE_REG_BITS_SET(CAMCR_PS_CAM_MASK, CAMCR_PS1 | CAMCR_PS0, &regs->CAMCR);
127
128 writeb(CAMADDR_CAMEN, &regs->CAMADDR);
129
Dave Jonesc4067402009-07-20 17:35:21 +0000130 for (i = 0; i < 8; i++)
Stephen Hemminger01faccb2007-08-24 14:40:45 -0700131 writeb(*mask++, &(regs->MARCAM[i]));
Dave Jonesc4067402009-07-20 17:35:21 +0000132
Stephen Hemminger01faccb2007-08-24 14:40:45 -0700133 /* disable CAMEN */
134 writeb(0, &regs->CAMADDR);
135
136 /* Select mar */
137 BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, &regs->CAMCR);
138}
139
Dave Jonesc4067402009-07-20 17:35:21 +0000140static void mac_set_vlan_cam_mask(struct mac_regs __iomem *regs, u8 *mask)
Stephen Hemminger01faccb2007-08-24 14:40:45 -0700141{
142 int i;
143 /* Select CAM mask */
144 BYTE_REG_BITS_SET(CAMCR_PS_CAM_MASK, CAMCR_PS1 | CAMCR_PS0, &regs->CAMCR);
145
146 writeb(CAMADDR_CAMEN | CAMADDR_VCAMSL, &regs->CAMADDR);
147
Dave Jonesc4067402009-07-20 17:35:21 +0000148 for (i = 0; i < 8; i++)
Stephen Hemminger01faccb2007-08-24 14:40:45 -0700149 writeb(*mask++, &(regs->MARCAM[i]));
Dave Jonesc4067402009-07-20 17:35:21 +0000150
Stephen Hemminger01faccb2007-08-24 14:40:45 -0700151 /* disable CAMEN */
152 writeb(0, &regs->CAMADDR);
153
154 /* Select mar */
155 BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, &regs->CAMCR);
156}
157
158/**
159 * mac_set_cam - set CAM data
160 * @regs: register block of this velocity
161 * @idx: Cam index
162 * @addr: 2 or 6 bytes of CAM data
163 *
164 * Load an address or vlan tag into a CAM
165 */
Dave Jonesc4067402009-07-20 17:35:21 +0000166static void mac_set_cam(struct mac_regs __iomem *regs, int idx, const u8 *addr)
Stephen Hemminger01faccb2007-08-24 14:40:45 -0700167{
168 int i;
169
170 /* Select CAM mask */
171 BYTE_REG_BITS_SET(CAMCR_PS_CAM_DATA, CAMCR_PS1 | CAMCR_PS0, &regs->CAMCR);
172
173 idx &= (64 - 1);
174
175 writeb(CAMADDR_CAMEN | idx, &regs->CAMADDR);
176
Dave Jonesc4067402009-07-20 17:35:21 +0000177 for (i = 0; i < 6; i++)
Stephen Hemminger01faccb2007-08-24 14:40:45 -0700178 writeb(*addr++, &(regs->MARCAM[i]));
Dave Jonesc4067402009-07-20 17:35:21 +0000179
Stephen Hemminger01faccb2007-08-24 14:40:45 -0700180 BYTE_REG_BITS_ON(CAMCR_CAMWR, &regs->CAMCR);
181
182 udelay(10);
183
184 writeb(0, &regs->CAMADDR);
185
186 /* Select mar */
187 BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, &regs->CAMCR);
188}
189
Dave Jonesc4067402009-07-20 17:35:21 +0000190static void mac_set_vlan_cam(struct mac_regs __iomem *regs, int idx,
Stephen Hemminger01faccb2007-08-24 14:40:45 -0700191 const u8 *addr)
192{
193
194 /* Select CAM mask */
195 BYTE_REG_BITS_SET(CAMCR_PS_CAM_DATA, CAMCR_PS1 | CAMCR_PS0, &regs->CAMCR);
196
197 idx &= (64 - 1);
198
199 writeb(CAMADDR_CAMEN | CAMADDR_VCAMSL | idx, &regs->CAMADDR);
200 writew(*((u16 *) addr), &regs->MARCAM[0]);
201
202 BYTE_REG_BITS_ON(CAMCR_CAMWR, &regs->CAMCR);
203
204 udelay(10);
205
206 writeb(0, &regs->CAMADDR);
207
208 /* Select mar */
209 BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, &regs->CAMCR);
210}
211
212
213/**
214 * mac_wol_reset - reset WOL after exiting low power
215 * @regs: register block of this velocity
216 *
217 * Called after we drop out of wake on lan mode in order to
218 * reset the Wake on lan features. This function doesn't restore
219 * the rest of the logic from the result of sleep/wakeup
220 */
Dave Jonesc4067402009-07-20 17:35:21 +0000221static void mac_wol_reset(struct mac_regs __iomem *regs)
Stephen Hemminger01faccb2007-08-24 14:40:45 -0700222{
223
224 /* Turn off SWPTAG right after leaving power mode */
225 BYTE_REG_BITS_OFF(STICKHW_SWPTAG, &regs->STICKHW);
226 /* clear sticky bits */
227 BYTE_REG_BITS_OFF((STICKHW_DS1 | STICKHW_DS0), &regs->STICKHW);
228
229 BYTE_REG_BITS_OFF(CHIPGCR_FCGMII, &regs->CHIPGCR);
230 BYTE_REG_BITS_OFF(CHIPGCR_FCMODE, &regs->CHIPGCR);
231 /* disable force PME-enable */
232 writeb(WOLCFG_PMEOVR, &regs->WOLCFGClr);
233 /* disable power-event config bit */
234 writew(0xFFFF, &regs->WOLCRClr);
235 /* clear power status */
236 writew(0xFFFF, &regs->WOLSRClr);
237}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700238
Jeff Garzik7282d492006-09-13 14:30:00 -0400239static const struct ethtool_ops velocity_ethtool_ops;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700240
241/*
242 Define module options
243*/
244
245MODULE_AUTHOR("VIA Networking Technologies, Inc.");
246MODULE_LICENSE("GPL");
247MODULE_DESCRIPTION("VIA Networking Velocity Family Gigabit Ethernet Adapter Driver");
248
Dave Jonesc4067402009-07-20 17:35:21 +0000249#define VELOCITY_PARAM(N, D) \
250 static int N[MAX_UNITS] = OPTION_DEFAULT;\
Linus Torvalds1da177e2005-04-16 15:20:36 -0700251 module_param_array(N, int, NULL, 0); \
Dave Jonesc4067402009-07-20 17:35:21 +0000252 MODULE_PARM_DESC(N, D);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700253
254#define RX_DESC_MIN 64
255#define RX_DESC_MAX 255
256#define RX_DESC_DEF 64
257VELOCITY_PARAM(RxDescriptors, "Number of receive descriptors");
258
259#define TX_DESC_MIN 16
260#define TX_DESC_MAX 256
261#define TX_DESC_DEF 64
262VELOCITY_PARAM(TxDescriptors, "Number of transmit descriptors");
263
Linus Torvalds1da177e2005-04-16 15:20:36 -0700264#define RX_THRESH_MIN 0
265#define RX_THRESH_MAX 3
266#define RX_THRESH_DEF 0
267/* rx_thresh[] is used for controlling the receive fifo threshold.
268 0: indicate the rxfifo threshold is 128 bytes.
269 1: indicate the rxfifo threshold is 512 bytes.
270 2: indicate the rxfifo threshold is 1024 bytes.
271 3: indicate the rxfifo threshold is store & forward.
272*/
273VELOCITY_PARAM(rx_thresh, "Receive fifo threshold");
274
275#define DMA_LENGTH_MIN 0
276#define DMA_LENGTH_MAX 7
Simon Kagstrom2a5774f2009-11-25 22:10:34 +0000277#define DMA_LENGTH_DEF 6
Linus Torvalds1da177e2005-04-16 15:20:36 -0700278
279/* DMA_length[] is used for controlling the DMA length
280 0: 8 DWORDs
281 1: 16 DWORDs
282 2: 32 DWORDs
283 3: 64 DWORDs
284 4: 128 DWORDs
285 5: 256 DWORDs
286 6: SF(flush till emply)
287 7: SF(flush till emply)
288*/
289VELOCITY_PARAM(DMA_length, "DMA length");
290
Linus Torvalds1da177e2005-04-16 15:20:36 -0700291#define IP_ALIG_DEF 0
292/* IP_byte_align[] is used for IP header DWORD byte aligned
293 0: indicate the IP header won't be DWORD byte aligned.(Default) .
294 1: indicate the IP header will be DWORD byte aligned.
295 In some enviroment, the IP header should be DWORD byte aligned,
296 or the packet will be droped when we receive it. (eg: IPVS)
297*/
298VELOCITY_PARAM(IP_byte_align, "Enable IP header dword aligned");
299
Linus Torvalds1da177e2005-04-16 15:20:36 -0700300#define FLOW_CNTL_DEF 1
301#define FLOW_CNTL_MIN 1
302#define FLOW_CNTL_MAX 5
303
304/* flow_control[] is used for setting the flow control ability of NIC.
305 1: hardware deafult - AUTO (default). Use Hardware default value in ANAR.
306 2: enable TX flow control.
307 3: enable RX flow control.
308 4: enable RX/TX flow control.
309 5: disable
310*/
311VELOCITY_PARAM(flow_control, "Enable flow control ability");
312
313#define MED_LNK_DEF 0
314#define MED_LNK_MIN 0
315#define MED_LNK_MAX 4
316/* speed_duplex[] is used for setting the speed and duplex mode of NIC.
317 0: indicate autonegotiation for both speed and duplex mode
318 1: indicate 100Mbps half duplex mode
319 2: indicate 100Mbps full duplex mode
320 3: indicate 10Mbps half duplex mode
321 4: indicate 10Mbps full duplex mode
322
323 Note:
Dave Jonesc4067402009-07-20 17:35:21 +0000324 if EEPROM have been set to the force mode, this option is ignored
325 by driver.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700326*/
327VELOCITY_PARAM(speed_duplex, "Setting the speed and duplex mode");
328
329#define VAL_PKT_LEN_DEF 0
330/* ValPktLen[] is used for setting the checksum offload ability of NIC.
331 0: Receive frame with invalid layer 2 length (Default)
332 1: Drop frame with invalid layer 2 length
333*/
334VELOCITY_PARAM(ValPktLen, "Receiving or Drop invalid 802.3 frame");
335
336#define WOL_OPT_DEF 0
337#define WOL_OPT_MIN 0
338#define WOL_OPT_MAX 7
339/* wol_opts[] is used for controlling wake on lan behavior.
340 0: Wake up if recevied a magic packet. (Default)
341 1: Wake up if link status is on/off.
342 2: Wake up if recevied an arp packet.
343 4: Wake up if recevied any unicast packet.
344 Those value can be sumed up to support more than one option.
345*/
346VELOCITY_PARAM(wol_opts, "Wake On Lan options");
347
Linus Torvalds1da177e2005-04-16 15:20:36 -0700348static int rx_copybreak = 200;
349module_param(rx_copybreak, int, 0644);
350MODULE_PARM_DESC(rx_copybreak, "Copy breakpoint for copy-only-tiny-frames");
351
Linus Torvalds1da177e2005-04-16 15:20:36 -0700352/*
353 * Internal board variants. At the moment we have only one
354 */
Andrew Morton4f14b922008-02-09 23:41:40 -0800355static struct velocity_info_tbl chip_info_table[] = {
Jeff Garzikcabb7662006-06-27 09:25:28 -0400356 {CHIP_TYPE_VT6110, "VIA Networking Velocity Family Gigabit Ethernet Adapter", 1, 0x00FFFFFFUL},
357 { }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700358};
359
360/*
361 * Describe the PCI device identifiers that we support in this
362 * device driver. Used for hotplug autoloading.
363 */
Alexey Dobriyana3aa1882010-01-07 11:58:11 +0000364static DEFINE_PCI_DEVICE_TABLE(velocity_id_table) = {
Jeff Garzike54f4892006-06-27 09:20:08 -0400365 { PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_612X) },
366 { }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700367};
368
369MODULE_DEVICE_TABLE(pci, velocity_id_table);
370
371/**
372 * get_chip_name - identifier to name
373 * @id: chip identifier
374 *
375 * Given a chip identifier return a suitable description. Returns
376 * a pointer a static string valid while the driver is loaded.
377 */
Stephen Hemminger01faccb2007-08-24 14:40:45 -0700378static const char __devinit *get_chip_name(enum chip_type chip_id)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700379{
380 int i;
381 for (i = 0; chip_info_table[i].name != NULL; i++)
382 if (chip_info_table[i].chip_id == chip_id)
383 break;
384 return chip_info_table[i].name;
385}
386
387/**
388 * velocity_remove1 - device unplug
389 * @pdev: PCI device being removed
390 *
391 * Device unload callback. Called on an unplug or on module
392 * unload for each active device that is present. Disconnects
393 * the device from the network layer and frees all the resources
394 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700395static void __devexit velocity_remove1(struct pci_dev *pdev)
396{
397 struct net_device *dev = pci_get_drvdata(pdev);
Jeff Garzik8ab6f3f2006-06-27 08:56:23 -0400398 struct velocity_info *vptr = netdev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700399
Linus Torvalds1da177e2005-04-16 15:20:36 -0700400 unregister_netdev(dev);
401 iounmap(vptr->mac_regs);
402 pci_release_regions(pdev);
403 pci_disable_device(pdev);
404 pci_set_drvdata(pdev, NULL);
405 free_netdev(dev);
406
407 velocity_nics--;
408}
409
410/**
411 * velocity_set_int_opt - parser for integer options
412 * @opt: pointer to option value
413 * @val: value the user requested (or -1 for default)
414 * @min: lowest value allowed
415 * @max: highest value allowed
416 * @def: default value
417 * @name: property name
418 * @dev: device name
419 *
420 * Set an integer property in the module options. This function does
421 * all the verification and checking as well as reporting so that
422 * we don't duplicate code for each option.
423 */
Sven Hartge07b5f6a2008-10-23 13:03:44 +0000424static void __devinit velocity_set_int_opt(int *opt, int val, int min, int max, int def, char *name, const char *devname)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700425{
426 if (val == -1)
427 *opt = def;
428 else if (val < min || val > max) {
429 VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: the value of parameter %s is invalid, the valid range is (%d-%d)\n",
430 devname, name, min, max);
431 *opt = def;
432 } else {
433 VELOCITY_PRT(MSG_LEVEL_INFO, KERN_INFO "%s: set value of parameter %s to %d\n",
434 devname, name, val);
435 *opt = val;
436 }
437}
438
439/**
440 * velocity_set_bool_opt - parser for boolean options
441 * @opt: pointer to option value
442 * @val: value the user requested (or -1 for default)
443 * @def: default value (yes/no)
444 * @flag: numeric value to set for true.
445 * @name: property name
446 * @dev: device name
447 *
448 * Set a boolean property in the module options. This function does
449 * all the verification and checking as well as reporting so that
450 * we don't duplicate code for each option.
451 */
Dave Jonesc4067402009-07-20 17:35:21 +0000452static void __devinit velocity_set_bool_opt(u32 *opt, int val, int def, u32 flag, char *name, const char *devname)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700453{
454 (*opt) &= (~flag);
455 if (val == -1)
456 *opt |= (def ? flag : 0);
457 else if (val < 0 || val > 1) {
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400458 printk(KERN_NOTICE "%s: the value of parameter %s is invalid, the valid range is (0-1)\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700459 devname, name);
460 *opt |= (def ? flag : 0);
461 } else {
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400462 printk(KERN_INFO "%s: set parameter %s to %s\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700463 devname, name, val ? "TRUE" : "FALSE");
464 *opt |= (val ? flag : 0);
465 }
466}
467
468/**
469 * velocity_get_options - set options on device
470 * @opts: option structure for the device
471 * @index: index of option to use in module options array
472 * @devname: device name
473 *
474 * Turn the module and command options into a single structure
475 * for the current device
476 */
Sven Hartge07b5f6a2008-10-23 13:03:44 +0000477static void __devinit velocity_get_options(struct velocity_opt *opts, int index, const char *devname)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700478{
479
480 velocity_set_int_opt(&opts->rx_thresh, rx_thresh[index], RX_THRESH_MIN, RX_THRESH_MAX, RX_THRESH_DEF, "rx_thresh", devname);
481 velocity_set_int_opt(&opts->DMA_length, DMA_length[index], DMA_LENGTH_MIN, DMA_LENGTH_MAX, DMA_LENGTH_DEF, "DMA_length", devname);
482 velocity_set_int_opt(&opts->numrx, RxDescriptors[index], RX_DESC_MIN, RX_DESC_MAX, RX_DESC_DEF, "RxDescriptors", devname);
483 velocity_set_int_opt(&opts->numtx, TxDescriptors[index], TX_DESC_MIN, TX_DESC_MAX, TX_DESC_DEF, "TxDescriptors", devname);
Stephen Hemminger501e4d22007-08-24 13:56:49 -0700484
Linus Torvalds1da177e2005-04-16 15:20:36 -0700485 velocity_set_int_opt(&opts->flow_cntl, flow_control[index], FLOW_CNTL_MIN, FLOW_CNTL_MAX, FLOW_CNTL_DEF, "flow_control", devname);
486 velocity_set_bool_opt(&opts->flags, IP_byte_align[index], IP_ALIG_DEF, VELOCITY_FLAGS_IP_ALIGN, "IP_byte_align", devname);
487 velocity_set_bool_opt(&opts->flags, ValPktLen[index], VAL_PKT_LEN_DEF, VELOCITY_FLAGS_VAL_PKT_LEN, "ValPktLen", devname);
488 velocity_set_int_opt((int *) &opts->spd_dpx, speed_duplex[index], MED_LNK_MIN, MED_LNK_MAX, MED_LNK_DEF, "Media link mode", devname);
489 velocity_set_int_opt((int *) &opts->wol_opts, wol_opts[index], WOL_OPT_MIN, WOL_OPT_MAX, WOL_OPT_DEF, "Wake On Lan options", devname);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700490 opts->numrx = (opts->numrx & ~3);
491}
492
493/**
494 * velocity_init_cam_filter - initialise CAM
495 * @vptr: velocity to program
496 *
497 * Initialize the content addressable memory used for filters. Load
498 * appropriately according to the presence of VLAN
499 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700500static void velocity_init_cam_filter(struct velocity_info *vptr)
501{
Dave Jonesc4067402009-07-20 17:35:21 +0000502 struct mac_regs __iomem *regs = vptr->mac_regs;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700503
504 /* Turn on MCFG_PQEN, turn off MCFG_RTGOPT */
505 WORD_REG_BITS_SET(MCFG_PQEN, MCFG_RTGOPT, &regs->MCFG);
506 WORD_REG_BITS_ON(MCFG_VIDFR, &regs->MCFG);
507
508 /* Disable all CAMs */
509 memset(vptr->vCAMmask, 0, sizeof(u8) * 8);
510 memset(vptr->mCAMmask, 0, sizeof(u8) * 8);
Stephen Hemminger01faccb2007-08-24 14:40:45 -0700511 mac_set_vlan_cam_mask(regs, vptr->vCAMmask);
512 mac_set_cam_mask(regs, vptr->mCAMmask);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700513
Francois Romieud4f73c82008-04-24 23:32:33 +0200514 /* Enable VCAMs */
Stephen Hemminger501e4d22007-08-24 13:56:49 -0700515 if (vptr->vlgrp) {
Francois Romieud4f73c82008-04-24 23:32:33 +0200516 unsigned int vid, i = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700517
Francois Romieud4f73c82008-04-24 23:32:33 +0200518 if (!vlan_group_get_device(vptr->vlgrp, 0))
519 WORD_REG_BITS_ON(MCFG_RTGOPT, &regs->MCFG);
520
521 for (vid = 1; (vid < VLAN_VID_MASK); vid++) {
522 if (vlan_group_get_device(vptr->vlgrp, vid)) {
523 mac_set_vlan_cam(regs, i, (u8 *) &vid);
524 vptr->vCAMmask[i / 8] |= 0x1 << (i % 8);
525 if (++i >= VCAM_SIZE)
526 break;
Stephen Hemminger501e4d22007-08-24 13:56:49 -0700527 }
528 }
Stephen Hemminger01faccb2007-08-24 14:40:45 -0700529 mac_set_vlan_cam_mask(regs, vptr->vCAMmask);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700530 }
531}
532
Francois Romieud4f73c82008-04-24 23:32:33 +0200533static void velocity_vlan_rx_register(struct net_device *dev,
534 struct vlan_group *grp)
535{
536 struct velocity_info *vptr = netdev_priv(dev);
537
538 vptr->vlgrp = grp;
539}
540
Stephen Hemminger501e4d22007-08-24 13:56:49 -0700541static void velocity_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
542{
543 struct velocity_info *vptr = netdev_priv(dev);
544
Dave Jonesc4067402009-07-20 17:35:21 +0000545 spin_lock_irq(&vptr->lock);
Stephen Hemminger501e4d22007-08-24 13:56:49 -0700546 velocity_init_cam_filter(vptr);
Dave Jonesc4067402009-07-20 17:35:21 +0000547 spin_unlock_irq(&vptr->lock);
Stephen Hemminger501e4d22007-08-24 13:56:49 -0700548}
549
550static void velocity_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
551{
552 struct velocity_info *vptr = netdev_priv(dev);
553
Dave Jonesc4067402009-07-20 17:35:21 +0000554 spin_lock_irq(&vptr->lock);
Stephen Hemminger501e4d22007-08-24 13:56:49 -0700555 vlan_group_set_device(vptr->vlgrp, vid, NULL);
556 velocity_init_cam_filter(vptr);
Dave Jonesc4067402009-07-20 17:35:21 +0000557 spin_unlock_irq(&vptr->lock);
Stephen Hemminger501e4d22007-08-24 13:56:49 -0700558}
559
Francois Romieu3c4dc712008-07-31 22:51:18 +0200560static void velocity_init_rx_ring_indexes(struct velocity_info *vptr)
561{
562 vptr->rx.dirty = vptr->rx.filled = vptr->rx.curr = 0;
563}
Stephen Hemminger501e4d22007-08-24 13:56:49 -0700564
Linus Torvalds1da177e2005-04-16 15:20:36 -0700565/**
566 * velocity_rx_reset - handle a receive reset
567 * @vptr: velocity we are resetting
568 *
569 * Reset the ownership and status for the receive ring side.
570 * Hand all the receive queue to the NIC.
571 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700572static void velocity_rx_reset(struct velocity_info *vptr)
573{
574
Dave Jonesc4067402009-07-20 17:35:21 +0000575 struct mac_regs __iomem *regs = vptr->mac_regs;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700576 int i;
577
Francois Romieu3c4dc712008-07-31 22:51:18 +0200578 velocity_init_rx_ring_indexes(vptr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700579
580 /*
581 * Init state, all RD entries belong to the NIC
582 */
583 for (i = 0; i < vptr->options.numrx; ++i)
Francois Romieu0fe9f152008-07-31 22:10:10 +0200584 vptr->rx.ring[i].rdesc0.len |= OWNED_BY_NIC;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700585
586 writew(vptr->options.numrx, &regs->RBRDU);
Francois Romieu0fe9f152008-07-31 22:10:10 +0200587 writel(vptr->rx.pool_dma, &regs->RDBaseLo);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700588 writew(0, &regs->RDIdx);
589 writew(vptr->options.numrx - 1, &regs->RDCSize);
590}
591
592/**
Dave Jones2cf71d22009-07-23 18:11:12 -0700593 * velocity_get_opt_media_mode - get media selection
594 * @vptr: velocity adapter
595 *
596 * Get the media mode stored in EEPROM or module options and load
597 * mii_status accordingly. The requested link state information
598 * is also returned.
599 */
600static u32 velocity_get_opt_media_mode(struct velocity_info *vptr)
601{
602 u32 status = 0;
603
604 switch (vptr->options.spd_dpx) {
605 case SPD_DPX_AUTO:
606 status = VELOCITY_AUTONEG_ENABLE;
607 break;
608 case SPD_DPX_100_FULL:
609 status = VELOCITY_SPEED_100 | VELOCITY_DUPLEX_FULL;
610 break;
611 case SPD_DPX_10_FULL:
612 status = VELOCITY_SPEED_10 | VELOCITY_DUPLEX_FULL;
613 break;
614 case SPD_DPX_100_HALF:
615 status = VELOCITY_SPEED_100;
616 break;
617 case SPD_DPX_10_HALF:
618 status = VELOCITY_SPEED_10;
619 break;
620 }
621 vptr->mii_status = status;
622 return status;
623}
624
625/**
626 * safe_disable_mii_autopoll - autopoll off
627 * @regs: velocity registers
628 *
629 * Turn off the autopoll and wait for it to disable on the chip
630 */
631static void safe_disable_mii_autopoll(struct mac_regs __iomem *regs)
632{
633 u16 ww;
634
635 /* turn off MAUTO */
636 writeb(0, &regs->MIICR);
637 for (ww = 0; ww < W_MAX_TIMEOUT; ww++) {
638 udelay(1);
639 if (BYTE_REG_BITS_IS_ON(MIISR_MIDLE, &regs->MIISR))
640 break;
641 }
642}
643
644/**
645 * enable_mii_autopoll - turn on autopolling
646 * @regs: velocity registers
647 *
648 * Enable the MII link status autopoll feature on the Velocity
649 * hardware. Wait for it to enable.
650 */
651static void enable_mii_autopoll(struct mac_regs __iomem *regs)
652{
653 int ii;
654
655 writeb(0, &(regs->MIICR));
656 writeb(MIIADR_SWMPL, &regs->MIIADR);
657
658 for (ii = 0; ii < W_MAX_TIMEOUT; ii++) {
659 udelay(1);
660 if (BYTE_REG_BITS_IS_ON(MIISR_MIDLE, &regs->MIISR))
661 break;
662 }
663
664 writeb(MIICR_MAUTO, &regs->MIICR);
665
666 for (ii = 0; ii < W_MAX_TIMEOUT; ii++) {
667 udelay(1);
668 if (!BYTE_REG_BITS_IS_ON(MIISR_MIDLE, &regs->MIISR))
669 break;
670 }
671
672}
673
674/**
675 * velocity_mii_read - read MII data
676 * @regs: velocity registers
677 * @index: MII register index
678 * @data: buffer for received data
679 *
680 * Perform a single read of an MII 16bit register. Returns zero
681 * on success or -ETIMEDOUT if the PHY did not respond.
682 */
683static int velocity_mii_read(struct mac_regs __iomem *regs, u8 index, u16 *data)
684{
685 u16 ww;
686
687 /*
688 * Disable MIICR_MAUTO, so that mii addr can be set normally
689 */
690 safe_disable_mii_autopoll(regs);
691
692 writeb(index, &regs->MIIADR);
693
694 BYTE_REG_BITS_ON(MIICR_RCMD, &regs->MIICR);
695
696 for (ww = 0; ww < W_MAX_TIMEOUT; ww++) {
697 if (!(readb(&regs->MIICR) & MIICR_RCMD))
698 break;
699 }
700
701 *data = readw(&regs->MIIDATA);
702
703 enable_mii_autopoll(regs);
704 if (ww == W_MAX_TIMEOUT)
705 return -ETIMEDOUT;
706 return 0;
707}
708
709
710/**
711 * mii_check_media_mode - check media state
712 * @regs: velocity registers
713 *
714 * Check the current MII status and determine the link status
715 * accordingly
716 */
717static u32 mii_check_media_mode(struct mac_regs __iomem *regs)
718{
719 u32 status = 0;
720 u16 ANAR;
721
Francois Romieu3a7f8682010-04-06 14:24:53 -0700722 if (!MII_REG_BITS_IS_ON(BMSR_LSTATUS, MII_BMSR, regs))
Dave Jones2cf71d22009-07-23 18:11:12 -0700723 status |= VELOCITY_LINK_FAIL;
724
Francois Romieu3a7f8682010-04-06 14:24:53 -0700725 if (MII_REG_BITS_IS_ON(ADVERTISE_1000FULL, MII_CTRL1000, regs))
Dave Jones2cf71d22009-07-23 18:11:12 -0700726 status |= VELOCITY_SPEED_1000 | VELOCITY_DUPLEX_FULL;
Francois Romieu3a7f8682010-04-06 14:24:53 -0700727 else if (MII_REG_BITS_IS_ON(ADVERTISE_1000HALF, MII_CTRL1000, regs))
Dave Jones2cf71d22009-07-23 18:11:12 -0700728 status |= (VELOCITY_SPEED_1000);
729 else {
Francois Romieu3a7f8682010-04-06 14:24:53 -0700730 velocity_mii_read(regs, MII_ADVERTISE, &ANAR);
731 if (ANAR & ADVERTISE_100FULL)
Dave Jones2cf71d22009-07-23 18:11:12 -0700732 status |= (VELOCITY_SPEED_100 | VELOCITY_DUPLEX_FULL);
Francois Romieu3a7f8682010-04-06 14:24:53 -0700733 else if (ANAR & ADVERTISE_100HALF)
Dave Jones2cf71d22009-07-23 18:11:12 -0700734 status |= VELOCITY_SPEED_100;
Francois Romieu3a7f8682010-04-06 14:24:53 -0700735 else if (ANAR & ADVERTISE_10FULL)
Dave Jones2cf71d22009-07-23 18:11:12 -0700736 status |= (VELOCITY_SPEED_10 | VELOCITY_DUPLEX_FULL);
737 else
738 status |= (VELOCITY_SPEED_10);
739 }
740
Francois Romieu3a7f8682010-04-06 14:24:53 -0700741 if (MII_REG_BITS_IS_ON(BMCR_ANENABLE, MII_BMCR, regs)) {
742 velocity_mii_read(regs, MII_ADVERTISE, &ANAR);
743 if ((ANAR & (ADVERTISE_100FULL | ADVERTISE_100HALF | ADVERTISE_10FULL | ADVERTISE_10HALF))
744 == (ADVERTISE_100FULL | ADVERTISE_100HALF | ADVERTISE_10FULL | ADVERTISE_10HALF)) {
745 if (MII_REG_BITS_IS_ON(ADVERTISE_1000HALF | ADVERTISE_1000FULL, MII_CTRL1000, regs))
Dave Jones2cf71d22009-07-23 18:11:12 -0700746 status |= VELOCITY_AUTONEG_ENABLE;
747 }
748 }
749
750 return status;
751}
752
753/**
754 * velocity_mii_write - write MII data
755 * @regs: velocity registers
756 * @index: MII register index
757 * @data: 16bit data for the MII register
758 *
759 * Perform a single write to an MII 16bit register. Returns zero
760 * on success or -ETIMEDOUT if the PHY did not respond.
761 */
762static int velocity_mii_write(struct mac_regs __iomem *regs, u8 mii_addr, u16 data)
763{
764 u16 ww;
765
766 /*
767 * Disable MIICR_MAUTO, so that mii addr can be set normally
768 */
769 safe_disable_mii_autopoll(regs);
770
771 /* MII reg offset */
772 writeb(mii_addr, &regs->MIIADR);
773 /* set MII data */
774 writew(data, &regs->MIIDATA);
775
776 /* turn on MIICR_WCMD */
777 BYTE_REG_BITS_ON(MIICR_WCMD, &regs->MIICR);
778
779 /* W_MAX_TIMEOUT is the timeout period */
780 for (ww = 0; ww < W_MAX_TIMEOUT; ww++) {
781 udelay(5);
782 if (!(readb(&regs->MIICR) & MIICR_WCMD))
783 break;
784 }
785 enable_mii_autopoll(regs);
786
787 if (ww == W_MAX_TIMEOUT)
788 return -ETIMEDOUT;
789 return 0;
790}
791
792/**
793 * set_mii_flow_control - flow control setup
794 * @vptr: velocity interface
795 *
796 * Set up the flow control on this interface according to
797 * the supplied user/eeprom options.
798 */
799static void set_mii_flow_control(struct velocity_info *vptr)
800{
801 /*Enable or Disable PAUSE in ANAR */
802 switch (vptr->options.flow_cntl) {
803 case FLOW_CNTL_TX:
Francois Romieu3a7f8682010-04-06 14:24:53 -0700804 MII_REG_BITS_OFF(ADVERTISE_PAUSE_CAP, MII_ADVERTISE, vptr->mac_regs);
805 MII_REG_BITS_ON(ADVERTISE_PAUSE_ASYM, MII_ADVERTISE, vptr->mac_regs);
Dave Jones2cf71d22009-07-23 18:11:12 -0700806 break;
807
808 case FLOW_CNTL_RX:
Francois Romieu3a7f8682010-04-06 14:24:53 -0700809 MII_REG_BITS_ON(ADVERTISE_PAUSE_CAP, MII_ADVERTISE, vptr->mac_regs);
810 MII_REG_BITS_ON(ADVERTISE_PAUSE_ASYM, MII_ADVERTISE, vptr->mac_regs);
Dave Jones2cf71d22009-07-23 18:11:12 -0700811 break;
812
813 case FLOW_CNTL_TX_RX:
Francois Romieu3a7f8682010-04-06 14:24:53 -0700814 MII_REG_BITS_ON(ADVERTISE_PAUSE_CAP, MII_ADVERTISE, vptr->mac_regs);
David S. Miller4a35ecf2010-04-06 23:53:30 -0700815 MII_REG_BITS_OFF(ADVERTISE_PAUSE_ASYM, MII_ADVERTISE, vptr->mac_regs);
Dave Jones2cf71d22009-07-23 18:11:12 -0700816 break;
817
818 case FLOW_CNTL_DISABLE:
Francois Romieu3a7f8682010-04-06 14:24:53 -0700819 MII_REG_BITS_OFF(ADVERTISE_PAUSE_CAP, MII_ADVERTISE, vptr->mac_regs);
820 MII_REG_BITS_OFF(ADVERTISE_PAUSE_ASYM, MII_ADVERTISE, vptr->mac_regs);
Dave Jones2cf71d22009-07-23 18:11:12 -0700821 break;
822 default:
823 break;
824 }
825}
826
827/**
828 * mii_set_auto_on - autonegotiate on
829 * @vptr: velocity
830 *
831 * Enable autonegotation on this interface
832 */
833static void mii_set_auto_on(struct velocity_info *vptr)
834{
Francois Romieu3a7f8682010-04-06 14:24:53 -0700835 if (MII_REG_BITS_IS_ON(BMCR_ANENABLE, MII_BMCR, vptr->mac_regs))
836 MII_REG_BITS_ON(BMCR_ANRESTART, MII_BMCR, vptr->mac_regs);
Dave Jones2cf71d22009-07-23 18:11:12 -0700837 else
Francois Romieu3a7f8682010-04-06 14:24:53 -0700838 MII_REG_BITS_ON(BMCR_ANENABLE, MII_BMCR, vptr->mac_regs);
Dave Jones2cf71d22009-07-23 18:11:12 -0700839}
840
841static u32 check_connection_type(struct mac_regs __iomem *regs)
842{
843 u32 status = 0;
844 u8 PHYSR0;
845 u16 ANAR;
846 PHYSR0 = readb(&regs->PHYSR0);
847
848 /*
849 if (!(PHYSR0 & PHYSR0_LINKGD))
850 status|=VELOCITY_LINK_FAIL;
851 */
852
853 if (PHYSR0 & PHYSR0_FDPX)
854 status |= VELOCITY_DUPLEX_FULL;
855
856 if (PHYSR0 & PHYSR0_SPDG)
857 status |= VELOCITY_SPEED_1000;
858 else if (PHYSR0 & PHYSR0_SPD10)
859 status |= VELOCITY_SPEED_10;
860 else
861 status |= VELOCITY_SPEED_100;
862
Francois Romieu3a7f8682010-04-06 14:24:53 -0700863 if (MII_REG_BITS_IS_ON(BMCR_ANENABLE, MII_BMCR, regs)) {
864 velocity_mii_read(regs, MII_ADVERTISE, &ANAR);
865 if ((ANAR & (ADVERTISE_100FULL | ADVERTISE_100HALF | ADVERTISE_10FULL | ADVERTISE_10HALF))
866 == (ADVERTISE_100FULL | ADVERTISE_100HALF | ADVERTISE_10FULL | ADVERTISE_10HALF)) {
867 if (MII_REG_BITS_IS_ON(ADVERTISE_1000HALF | ADVERTISE_1000FULL, MII_CTRL1000, regs))
Dave Jones2cf71d22009-07-23 18:11:12 -0700868 status |= VELOCITY_AUTONEG_ENABLE;
869 }
870 }
871
872 return status;
873}
874
875
876
877/**
878 * velocity_set_media_mode - set media mode
879 * @mii_status: old MII link state
880 *
881 * Check the media link state and configure the flow control
882 * PHY and also velocity hardware setup accordingly. In particular
883 * we need to set up CD polling and frame bursting.
884 */
885static int velocity_set_media_mode(struct velocity_info *vptr, u32 mii_status)
886{
887 u32 curr_status;
888 struct mac_regs __iomem *regs = vptr->mac_regs;
889
890 vptr->mii_status = mii_check_media_mode(vptr->mac_regs);
891 curr_status = vptr->mii_status & (~VELOCITY_LINK_FAIL);
892
893 /* Set mii link status */
894 set_mii_flow_control(vptr);
895
896 /*
897 Check if new status is consisent with current status
Joe Perches8e95a202009-12-03 07:58:21 +0000898 if (((mii_status & curr_status) & VELOCITY_AUTONEG_ENABLE) ||
899 (mii_status==curr_status)) {
Dave Jones2cf71d22009-07-23 18:11:12 -0700900 vptr->mii_status=mii_check_media_mode(vptr->mac_regs);
901 vptr->mii_status=check_connection_type(vptr->mac_regs);
902 VELOCITY_PRT(MSG_LEVEL_INFO, "Velocity link no change\n");
903 return 0;
904 }
905 */
906
907 if (PHYID_GET_PHY_ID(vptr->phy_id) == PHYID_CICADA_CS8201)
Francois Romieu3a7f8682010-04-06 14:24:53 -0700908 MII_REG_BITS_ON(AUXCR_MDPPS, MII_NCONFIG, vptr->mac_regs);
Dave Jones2cf71d22009-07-23 18:11:12 -0700909
910 /*
911 * If connection type is AUTO
912 */
913 if (mii_status & VELOCITY_AUTONEG_ENABLE) {
914 VELOCITY_PRT(MSG_LEVEL_INFO, "Velocity is AUTO mode\n");
915 /* clear force MAC mode bit */
916 BYTE_REG_BITS_OFF(CHIPGCR_FCMODE, &regs->CHIPGCR);
917 /* set duplex mode of MAC according to duplex mode of MII */
Francois Romieu3a7f8682010-04-06 14:24:53 -0700918 MII_REG_BITS_ON(ADVERTISE_100FULL | ADVERTISE_100HALF | ADVERTISE_10FULL | ADVERTISE_10HALF, MII_ADVERTISE, vptr->mac_regs);
919 MII_REG_BITS_ON(ADVERTISE_1000FULL | ADVERTISE_1000HALF, MII_CTRL1000, vptr->mac_regs);
920 MII_REG_BITS_ON(BMCR_SPEED1000, MII_BMCR, vptr->mac_regs);
Dave Jones2cf71d22009-07-23 18:11:12 -0700921
922 /* enable AUTO-NEGO mode */
923 mii_set_auto_on(vptr);
924 } else {
925 u16 ANAR;
926 u8 CHIPGCR;
927
928 /*
929 * 1. if it's 3119, disable frame bursting in halfduplex mode
930 * and enable it in fullduplex mode
931 * 2. set correct MII/GMII and half/full duplex mode in CHIPGCR
932 * 3. only enable CD heart beat counter in 10HD mode
933 */
934
935 /* set force MAC mode bit */
936 BYTE_REG_BITS_ON(CHIPGCR_FCMODE, &regs->CHIPGCR);
937
938 CHIPGCR = readb(&regs->CHIPGCR);
939 CHIPGCR &= ~CHIPGCR_FCGMII;
940
941 if (mii_status & VELOCITY_DUPLEX_FULL) {
942 CHIPGCR |= CHIPGCR_FCFDX;
943 writeb(CHIPGCR, &regs->CHIPGCR);
944 VELOCITY_PRT(MSG_LEVEL_INFO, "set Velocity to forced full mode\n");
945 if (vptr->rev_id < REV_ID_VT3216_A0)
946 BYTE_REG_BITS_OFF(TCR_TB2BDIS, &regs->TCR);
947 } else {
948 CHIPGCR &= ~CHIPGCR_FCFDX;
949 VELOCITY_PRT(MSG_LEVEL_INFO, "set Velocity to forced half mode\n");
950 writeb(CHIPGCR, &regs->CHIPGCR);
951 if (vptr->rev_id < REV_ID_VT3216_A0)
952 BYTE_REG_BITS_ON(TCR_TB2BDIS, &regs->TCR);
953 }
954
Francois Romieu3a7f8682010-04-06 14:24:53 -0700955 MII_REG_BITS_OFF(ADVERTISE_1000FULL | ADVERTISE_1000HALF, MII_CTRL1000, vptr->mac_regs);
Dave Jones2cf71d22009-07-23 18:11:12 -0700956
957 if (!(mii_status & VELOCITY_DUPLEX_FULL) && (mii_status & VELOCITY_SPEED_10))
958 BYTE_REG_BITS_OFF(TESTCFG_HBDIS, &regs->TESTCFG);
959 else
960 BYTE_REG_BITS_ON(TESTCFG_HBDIS, &regs->TESTCFG);
961
Francois Romieu3a7f8682010-04-06 14:24:53 -0700962 /* MII_REG_BITS_OFF(BMCR_SPEED1000, MII_BMCR, vptr->mac_regs); */
963 velocity_mii_read(vptr->mac_regs, MII_ADVERTISE, &ANAR);
964 ANAR &= (~(ADVERTISE_100FULL | ADVERTISE_100HALF | ADVERTISE_10FULL | ADVERTISE_10HALF));
Dave Jones2cf71d22009-07-23 18:11:12 -0700965 if (mii_status & VELOCITY_SPEED_100) {
966 if (mii_status & VELOCITY_DUPLEX_FULL)
Francois Romieu3a7f8682010-04-06 14:24:53 -0700967 ANAR |= ADVERTISE_100FULL;
Dave Jones2cf71d22009-07-23 18:11:12 -0700968 else
Francois Romieu3a7f8682010-04-06 14:24:53 -0700969 ANAR |= ADVERTISE_100HALF;
Dave Jones2cf71d22009-07-23 18:11:12 -0700970 } else {
971 if (mii_status & VELOCITY_DUPLEX_FULL)
Francois Romieu3a7f8682010-04-06 14:24:53 -0700972 ANAR |= ADVERTISE_10FULL;
Dave Jones2cf71d22009-07-23 18:11:12 -0700973 else
Francois Romieu3a7f8682010-04-06 14:24:53 -0700974 ANAR |= ADVERTISE_10HALF;
Dave Jones2cf71d22009-07-23 18:11:12 -0700975 }
Francois Romieu3a7f8682010-04-06 14:24:53 -0700976 velocity_mii_write(vptr->mac_regs, MII_ADVERTISE, ANAR);
Dave Jones2cf71d22009-07-23 18:11:12 -0700977 /* enable AUTO-NEGO mode */
978 mii_set_auto_on(vptr);
Francois Romieu3a7f8682010-04-06 14:24:53 -0700979 /* MII_REG_BITS_ON(BMCR_ANENABLE, MII_BMCR, vptr->mac_regs); */
Dave Jones2cf71d22009-07-23 18:11:12 -0700980 }
981 /* vptr->mii_status=mii_check_media_mode(vptr->mac_regs); */
982 /* vptr->mii_status=check_connection_type(vptr->mac_regs); */
983 return VELOCITY_LINK_CHANGE;
984}
985
986/**
987 * velocity_print_link_status - link status reporting
988 * @vptr: velocity to report on
989 *
990 * Turn the link status of the velocity card into a kernel log
991 * description of the new link state, detailing speed and duplex
992 * status
993 */
994static void velocity_print_link_status(struct velocity_info *vptr)
995{
996
997 if (vptr->mii_status & VELOCITY_LINK_FAIL) {
998 VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: failed to detect cable link\n", vptr->dev->name);
999 } else if (vptr->options.spd_dpx == SPD_DPX_AUTO) {
1000 VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: Link auto-negotiation", vptr->dev->name);
1001
1002 if (vptr->mii_status & VELOCITY_SPEED_1000)
1003 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 1000M bps");
1004 else if (vptr->mii_status & VELOCITY_SPEED_100)
1005 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 100M bps");
1006 else
1007 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 10M bps");
1008
1009 if (vptr->mii_status & VELOCITY_DUPLEX_FULL)
1010 VELOCITY_PRT(MSG_LEVEL_INFO, " full duplex\n");
1011 else
1012 VELOCITY_PRT(MSG_LEVEL_INFO, " half duplex\n");
1013 } else {
1014 VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: Link forced", vptr->dev->name);
1015 switch (vptr->options.spd_dpx) {
1016 case SPD_DPX_100_HALF:
1017 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 100M bps half duplex\n");
1018 break;
1019 case SPD_DPX_100_FULL:
1020 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 100M bps full duplex\n");
1021 break;
1022 case SPD_DPX_10_HALF:
1023 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 10M bps half duplex\n");
1024 break;
1025 case SPD_DPX_10_FULL:
1026 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 10M bps full duplex\n");
1027 break;
1028 default:
1029 break;
1030 }
1031 }
1032}
1033
1034/**
1035 * enable_flow_control_ability - flow control
1036 * @vptr: veloity to configure
1037 *
1038 * Set up flow control according to the flow control options
1039 * determined by the eeprom/configuration.
1040 */
1041static void enable_flow_control_ability(struct velocity_info *vptr)
1042{
1043
1044 struct mac_regs __iomem *regs = vptr->mac_regs;
1045
1046 switch (vptr->options.flow_cntl) {
1047
1048 case FLOW_CNTL_DEFAULT:
1049 if (BYTE_REG_BITS_IS_ON(PHYSR0_RXFLC, &regs->PHYSR0))
1050 writel(CR0_FDXRFCEN, &regs->CR0Set);
1051 else
1052 writel(CR0_FDXRFCEN, &regs->CR0Clr);
1053
1054 if (BYTE_REG_BITS_IS_ON(PHYSR0_TXFLC, &regs->PHYSR0))
1055 writel(CR0_FDXTFCEN, &regs->CR0Set);
1056 else
1057 writel(CR0_FDXTFCEN, &regs->CR0Clr);
1058 break;
1059
1060 case FLOW_CNTL_TX:
1061 writel(CR0_FDXTFCEN, &regs->CR0Set);
1062 writel(CR0_FDXRFCEN, &regs->CR0Clr);
1063 break;
1064
1065 case FLOW_CNTL_RX:
1066 writel(CR0_FDXRFCEN, &regs->CR0Set);
1067 writel(CR0_FDXTFCEN, &regs->CR0Clr);
1068 break;
1069
1070 case FLOW_CNTL_TX_RX:
1071 writel(CR0_FDXTFCEN, &regs->CR0Set);
1072 writel(CR0_FDXRFCEN, &regs->CR0Set);
1073 break;
1074
1075 case FLOW_CNTL_DISABLE:
1076 writel(CR0_FDXRFCEN, &regs->CR0Clr);
1077 writel(CR0_FDXTFCEN, &regs->CR0Clr);
1078 break;
1079
1080 default:
1081 break;
1082 }
1083
1084}
1085
1086/**
1087 * velocity_soft_reset - soft reset
1088 * @vptr: velocity to reset
1089 *
1090 * Kick off a soft reset of the velocity adapter and then poll
1091 * until the reset sequence has completed before returning.
1092 */
1093static int velocity_soft_reset(struct velocity_info *vptr)
1094{
1095 struct mac_regs __iomem *regs = vptr->mac_regs;
1096 int i = 0;
1097
1098 writel(CR0_SFRST, &regs->CR0Set);
1099
1100 for (i = 0; i < W_MAX_TIMEOUT; i++) {
1101 udelay(5);
1102 if (!DWORD_REG_BITS_IS_ON(CR0_SFRST, &regs->CR0Set))
1103 break;
1104 }
1105
1106 if (i == W_MAX_TIMEOUT) {
1107 writel(CR0_FORSRST, &regs->CR0Set);
1108 /* FIXME: PCI POSTING */
1109 /* delay 2ms */
1110 mdelay(2);
1111 }
1112 return 0;
1113}
1114
1115/**
1116 * velocity_set_multi - filter list change callback
1117 * @dev: network device
1118 *
1119 * Called by the network layer when the filter lists need to change
1120 * for a velocity adapter. Reload the CAMs with the new address
1121 * filter ruleset.
1122 */
1123static void velocity_set_multi(struct net_device *dev)
1124{
1125 struct velocity_info *vptr = netdev_priv(dev);
1126 struct mac_regs __iomem *regs = vptr->mac_regs;
1127 u8 rx_mode;
1128 int i;
Jiri Pirko22bedad32010-04-01 21:22:57 +00001129 struct netdev_hw_addr *ha;
Dave Jones2cf71d22009-07-23 18:11:12 -07001130
1131 if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */
1132 writel(0xffffffff, &regs->MARCAM[0]);
1133 writel(0xffffffff, &regs->MARCAM[4]);
1134 rx_mode = (RCR_AM | RCR_AB | RCR_PROM);
Jiri Pirko4cd24ea2010-02-08 04:30:35 +00001135 } else if ((netdev_mc_count(dev) > vptr->multicast_limit) ||
Joe Perches8e95a202009-12-03 07:58:21 +00001136 (dev->flags & IFF_ALLMULTI)) {
Dave Jones2cf71d22009-07-23 18:11:12 -07001137 writel(0xffffffff, &regs->MARCAM[0]);
1138 writel(0xffffffff, &regs->MARCAM[4]);
1139 rx_mode = (RCR_AM | RCR_AB);
1140 } else {
1141 int offset = MCAM_SIZE - vptr->multicast_limit;
1142 mac_get_cam_mask(regs, vptr->mCAMmask);
1143
Jiri Pirko567ec872010-02-23 23:17:07 +00001144 i = 0;
Jiri Pirko22bedad32010-04-01 21:22:57 +00001145 netdev_for_each_mc_addr(ha, dev) {
1146 mac_set_cam(regs, i + offset, ha->addr);
Dave Jones2cf71d22009-07-23 18:11:12 -07001147 vptr->mCAMmask[(offset + i) / 8] |= 1 << ((offset + i) & 7);
Jiri Pirko567ec872010-02-23 23:17:07 +00001148 i++;
Dave Jones2cf71d22009-07-23 18:11:12 -07001149 }
1150
1151 mac_set_cam_mask(regs, vptr->mCAMmask);
1152 rx_mode = RCR_AM | RCR_AB | RCR_AP;
1153 }
1154 if (dev->mtu > 1500)
1155 rx_mode |= RCR_AL;
1156
1157 BYTE_REG_BITS_ON(rx_mode, &regs->RCR);
1158
1159}
1160
1161/*
1162 * MII access , media link mode setting functions
1163 */
1164
1165/**
1166 * mii_init - set up MII
1167 * @vptr: velocity adapter
1168 * @mii_status: links tatus
1169 *
1170 * Set up the PHY for the current link state.
1171 */
1172static void mii_init(struct velocity_info *vptr, u32 mii_status)
1173{
1174 u16 BMCR;
1175
1176 switch (PHYID_GET_PHY_ID(vptr->phy_id)) {
1177 case PHYID_CICADA_CS8201:
1178 /*
1179 * Reset to hardware default
1180 */
Francois Romieu3a7f8682010-04-06 14:24:53 -07001181 MII_REG_BITS_OFF((ADVERTISE_PAUSE_ASYM | ADVERTISE_PAUSE_CAP), MII_ADVERTISE, vptr->mac_regs);
Dave Jones2cf71d22009-07-23 18:11:12 -07001182 /*
1183 * Turn on ECHODIS bit in NWay-forced full mode and turn it
1184 * off it in NWay-forced half mode for NWay-forced v.s.
1185 * legacy-forced issue.
1186 */
1187 if (vptr->mii_status & VELOCITY_DUPLEX_FULL)
Francois Romieu3a7f8682010-04-06 14:24:53 -07001188 MII_REG_BITS_ON(TCSR_ECHODIS, MII_SREVISION, vptr->mac_regs);
Dave Jones2cf71d22009-07-23 18:11:12 -07001189 else
Francois Romieu3a7f8682010-04-06 14:24:53 -07001190 MII_REG_BITS_OFF(TCSR_ECHODIS, MII_SREVISION, vptr->mac_regs);
Dave Jones2cf71d22009-07-23 18:11:12 -07001191 /*
1192 * Turn on Link/Activity LED enable bit for CIS8201
1193 */
Francois Romieu3a7f8682010-04-06 14:24:53 -07001194 MII_REG_BITS_ON(PLED_LALBE, MII_TPISTATUS, vptr->mac_regs);
Dave Jones2cf71d22009-07-23 18:11:12 -07001195 break;
1196 case PHYID_VT3216_32BIT:
1197 case PHYID_VT3216_64BIT:
1198 /*
1199 * Reset to hardware default
1200 */
Francois Romieu3a7f8682010-04-06 14:24:53 -07001201 MII_REG_BITS_ON((ADVERTISE_PAUSE_ASYM | ADVERTISE_PAUSE_CAP), MII_ADVERTISE, vptr->mac_regs);
Dave Jones2cf71d22009-07-23 18:11:12 -07001202 /*
1203 * Turn on ECHODIS bit in NWay-forced full mode and turn it
1204 * off it in NWay-forced half mode for NWay-forced v.s.
1205 * legacy-forced issue
1206 */
1207 if (vptr->mii_status & VELOCITY_DUPLEX_FULL)
Francois Romieu3a7f8682010-04-06 14:24:53 -07001208 MII_REG_BITS_ON(TCSR_ECHODIS, MII_SREVISION, vptr->mac_regs);
Dave Jones2cf71d22009-07-23 18:11:12 -07001209 else
Francois Romieu3a7f8682010-04-06 14:24:53 -07001210 MII_REG_BITS_OFF(TCSR_ECHODIS, MII_SREVISION, vptr->mac_regs);
Dave Jones2cf71d22009-07-23 18:11:12 -07001211 break;
1212
1213 case PHYID_MARVELL_1000:
1214 case PHYID_MARVELL_1000S:
1215 /*
1216 * Assert CRS on Transmit
1217 */
1218 MII_REG_BITS_ON(PSCR_ACRSTX, MII_REG_PSCR, vptr->mac_regs);
1219 /*
1220 * Reset to hardware default
1221 */
Francois Romieu3a7f8682010-04-06 14:24:53 -07001222 MII_REG_BITS_ON((ADVERTISE_PAUSE_ASYM | ADVERTISE_PAUSE_CAP), MII_ADVERTISE, vptr->mac_regs);
Dave Jones2cf71d22009-07-23 18:11:12 -07001223 break;
1224 default:
1225 ;
1226 }
Francois Romieu3a7f8682010-04-06 14:24:53 -07001227 velocity_mii_read(vptr->mac_regs, MII_BMCR, &BMCR);
1228 if (BMCR & BMCR_ISOLATE) {
1229 BMCR &= ~BMCR_ISOLATE;
1230 velocity_mii_write(vptr->mac_regs, MII_BMCR, BMCR);
Dave Jones2cf71d22009-07-23 18:11:12 -07001231 }
1232}
1233
Simon Kagstrom6dfc4b92009-11-25 22:10:12 +00001234/**
1235 * setup_queue_timers - Setup interrupt timers
1236 *
1237 * Setup interrupt frequency during suppression (timeout if the frame
1238 * count isn't filled).
1239 */
1240static void setup_queue_timers(struct velocity_info *vptr)
1241{
1242 /* Only for newer revisions */
1243 if (vptr->rev_id >= REV_ID_VT3216_A0) {
1244 u8 txqueue_timer = 0;
1245 u8 rxqueue_timer = 0;
1246
1247 if (vptr->mii_status & (VELOCITY_SPEED_1000 |
1248 VELOCITY_SPEED_100)) {
1249 txqueue_timer = vptr->options.txqueue_timer;
1250 rxqueue_timer = vptr->options.rxqueue_timer;
1251 }
1252
1253 writeb(txqueue_timer, &vptr->mac_regs->TQETMR);
1254 writeb(rxqueue_timer, &vptr->mac_regs->RQETMR);
1255 }
1256}
1257/**
1258 * setup_adaptive_interrupts - Setup interrupt suppression
1259 *
1260 * @vptr velocity adapter
1261 *
1262 * The velocity is able to suppress interrupt during high interrupt load.
1263 * This function turns on that feature.
1264 */
1265static void setup_adaptive_interrupts(struct velocity_info *vptr)
1266{
1267 struct mac_regs __iomem *regs = vptr->mac_regs;
1268 u16 tx_intsup = vptr->options.tx_intsup;
1269 u16 rx_intsup = vptr->options.rx_intsup;
1270
1271 /* Setup default interrupt mask (will be changed below) */
1272 vptr->int_mask = INT_MASK_DEF;
1273
1274 /* Set Tx Interrupt Suppression Threshold */
1275 writeb(CAMCR_PS0, &regs->CAMCR);
1276 if (tx_intsup != 0) {
1277 vptr->int_mask &= ~(ISR_PTXI | ISR_PTX0I | ISR_PTX1I |
1278 ISR_PTX2I | ISR_PTX3I);
1279 writew(tx_intsup, &regs->ISRCTL);
1280 } else
1281 writew(ISRCTL_TSUPDIS, &regs->ISRCTL);
1282
1283 /* Set Rx Interrupt Suppression Threshold */
1284 writeb(CAMCR_PS1, &regs->CAMCR);
1285 if (rx_intsup != 0) {
1286 vptr->int_mask &= ~ISR_PRXI;
1287 writew(rx_intsup, &regs->ISRCTL);
1288 } else
1289 writew(ISRCTL_RSUPDIS, &regs->ISRCTL);
1290
1291 /* Select page to interrupt hold timer */
1292 writeb(0, &regs->CAMCR);
1293}
Dave Jones2cf71d22009-07-23 18:11:12 -07001294
1295/**
Linus Torvalds1da177e2005-04-16 15:20:36 -07001296 * velocity_init_registers - initialise MAC registers
1297 * @vptr: velocity to init
1298 * @type: type of initialisation (hot or cold)
1299 *
1300 * Initialise the MAC on a reset or on first set up on the
1301 * hardware.
1302 */
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001303static void velocity_init_registers(struct velocity_info *vptr,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001304 enum velocity_init_type type)
1305{
Dave Jonesc4067402009-07-20 17:35:21 +00001306 struct mac_regs __iomem *regs = vptr->mac_regs;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001307 int i, mii_status;
1308
1309 mac_wol_reset(regs);
1310
1311 switch (type) {
1312 case VELOCITY_INIT_RESET:
1313 case VELOCITY_INIT_WOL:
1314
1315 netif_stop_queue(vptr->dev);
1316
1317 /*
1318 * Reset RX to prevent RX pointer not on the 4X location
1319 */
1320 velocity_rx_reset(vptr);
1321 mac_rx_queue_run(regs);
1322 mac_rx_queue_wake(regs);
1323
1324 mii_status = velocity_get_opt_media_mode(vptr);
1325 if (velocity_set_media_mode(vptr, mii_status) != VELOCITY_LINK_CHANGE) {
1326 velocity_print_link_status(vptr);
1327 if (!(vptr->mii_status & VELOCITY_LINK_FAIL))
1328 netif_wake_queue(vptr->dev);
1329 }
1330
1331 enable_flow_control_ability(vptr);
1332
1333 mac_clear_isr(regs);
1334 writel(CR0_STOP, &regs->CR0Clr);
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001335 writel((CR0_DPOLL | CR0_TXON | CR0_RXON | CR0_STRT),
Linus Torvalds1da177e2005-04-16 15:20:36 -07001336 &regs->CR0Set);
1337
1338 break;
1339
1340 case VELOCITY_INIT_COLD:
1341 default:
1342 /*
1343 * Do reset
1344 */
1345 velocity_soft_reset(vptr);
1346 mdelay(5);
1347
1348 mac_eeprom_reload(regs);
Dave Jonesc4067402009-07-20 17:35:21 +00001349 for (i = 0; i < 6; i++)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001350 writeb(vptr->dev->dev_addr[i], &(regs->PAR[i]));
Dave Jonesc4067402009-07-20 17:35:21 +00001351
Linus Torvalds1da177e2005-04-16 15:20:36 -07001352 /*
1353 * clear Pre_ACPI bit.
1354 */
1355 BYTE_REG_BITS_OFF(CFGA_PACPI, &(regs->CFGA));
1356 mac_set_rx_thresh(regs, vptr->options.rx_thresh);
1357 mac_set_dma_length(regs, vptr->options.DMA_length);
1358
1359 writeb(WOLCFG_SAM | WOLCFG_SAB, &regs->WOLCFGSet);
1360 /*
1361 * Back off algorithm use original IEEE standard
1362 */
1363 BYTE_REG_BITS_SET(CFGB_OFSET, (CFGB_CRANDOM | CFGB_CAP | CFGB_MBA | CFGB_BAKOPT), &regs->CFGB);
1364
1365 /*
1366 * Init CAM filter
1367 */
1368 velocity_init_cam_filter(vptr);
1369
1370 /*
1371 * Set packet filter: Receive directed and broadcast address
1372 */
1373 velocity_set_multi(vptr->dev);
1374
1375 /*
1376 * Enable MII auto-polling
1377 */
1378 enable_mii_autopoll(regs);
1379
Simon Kagstrom6dfc4b92009-11-25 22:10:12 +00001380 setup_adaptive_interrupts(vptr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001381
Francois Romieu0fe9f152008-07-31 22:10:10 +02001382 writel(vptr->rx.pool_dma, &regs->RDBaseLo);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001383 writew(vptr->options.numrx - 1, &regs->RDCSize);
1384 mac_rx_queue_run(regs);
1385 mac_rx_queue_wake(regs);
1386
1387 writew(vptr->options.numtx - 1, &regs->TDCSize);
1388
Francois Romieu0fe9f152008-07-31 22:10:10 +02001389 for (i = 0; i < vptr->tx.numq; i++) {
1390 writel(vptr->tx.pool_dma[i], &regs->TDBaseLo[i]);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001391 mac_tx_queue_run(regs, i);
1392 }
1393
1394 init_flow_control_register(vptr);
1395
1396 writel(CR0_STOP, &regs->CR0Clr);
1397 writel((CR0_DPOLL | CR0_TXON | CR0_RXON | CR0_STRT), &regs->CR0Set);
1398
1399 mii_status = velocity_get_opt_media_mode(vptr);
1400 netif_stop_queue(vptr->dev);
1401
1402 mii_init(vptr, mii_status);
1403
1404 if (velocity_set_media_mode(vptr, mii_status) != VELOCITY_LINK_CHANGE) {
1405 velocity_print_link_status(vptr);
1406 if (!(vptr->mii_status & VELOCITY_LINK_FAIL))
1407 netif_wake_queue(vptr->dev);
1408 }
1409
1410 enable_flow_control_ability(vptr);
1411 mac_hw_mibs_init(regs);
1412 mac_write_int_mask(vptr->int_mask, regs);
1413 mac_clear_isr(regs);
1414
1415 }
1416}
1417
Dave Jones2cf71d22009-07-23 18:11:12 -07001418static void velocity_give_many_rx_descs(struct velocity_info *vptr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001419{
Dave Jonesc4067402009-07-20 17:35:21 +00001420 struct mac_regs __iomem *regs = vptr->mac_regs;
Dave Jones2cf71d22009-07-23 18:11:12 -07001421 int avail, dirty, unusable;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001422
Dave Jones2cf71d22009-07-23 18:11:12 -07001423 /*
1424 * RD number must be equal to 4X per hardware spec
1425 * (programming guide rev 1.20, p.13)
1426 */
1427 if (vptr->rx.filled < 4)
1428 return;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001429
Dave Jones2cf71d22009-07-23 18:11:12 -07001430 wmb();
1431
1432 unusable = vptr->rx.filled & 0x0003;
1433 dirty = vptr->rx.dirty - unusable;
1434 for (avail = vptr->rx.filled & 0xfffc; avail; avail--) {
1435 dirty = (dirty > 0) ? dirty - 1 : vptr->options.numrx - 1;
1436 vptr->rx.ring[dirty].rdesc0.len |= OWNED_BY_NIC;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001437 }
1438
Dave Jones2cf71d22009-07-23 18:11:12 -07001439 writew(vptr->rx.filled & 0xfffc, &regs->RBRDU);
1440 vptr->rx.filled = unusable;
1441}
1442
1443/**
1444 * velocity_init_dma_rings - set up DMA rings
1445 * @vptr: Velocity to set up
1446 *
1447 * Allocate PCI mapped DMA rings for the receive and transmit layer
1448 * to use.
1449 */
1450static int velocity_init_dma_rings(struct velocity_info *vptr)
1451{
1452 struct velocity_opt *opt = &vptr->options;
1453 const unsigned int rx_ring_size = opt->numrx * sizeof(struct rx_desc);
1454 const unsigned int tx_ring_size = opt->numtx * sizeof(struct tx_desc);
1455 struct pci_dev *pdev = vptr->pdev;
1456 dma_addr_t pool_dma;
1457 void *pool;
1458 unsigned int i;
1459
1460 /*
1461 * Allocate all RD/TD rings a single pool.
1462 *
1463 * pci_alloc_consistent() fulfills the requirement for 64 bytes
1464 * alignment
1465 */
1466 pool = pci_alloc_consistent(pdev, tx_ring_size * vptr->tx.numq +
1467 rx_ring_size, &pool_dma);
1468 if (!pool) {
1469 dev_err(&pdev->dev, "%s : DMA memory allocation failed.\n",
1470 vptr->dev->name);
1471 return -ENOMEM;
1472 }
1473
1474 vptr->rx.ring = pool;
1475 vptr->rx.pool_dma = pool_dma;
1476
1477 pool += rx_ring_size;
1478 pool_dma += rx_ring_size;
1479
1480 for (i = 0; i < vptr->tx.numq; i++) {
1481 vptr->tx.rings[i] = pool;
1482 vptr->tx.pool_dma[i] = pool_dma;
1483 pool += tx_ring_size;
1484 pool_dma += tx_ring_size;
1485 }
1486
1487 return 0;
1488}
1489
1490static void velocity_set_rxbufsize(struct velocity_info *vptr, int mtu)
1491{
1492 vptr->rx.buf_sz = (mtu <= ETH_DATA_LEN) ? PKT_BUF_SZ : mtu + 32;
1493}
1494
1495/**
1496 * velocity_alloc_rx_buf - allocate aligned receive buffer
1497 * @vptr: velocity
1498 * @idx: ring index
1499 *
1500 * Allocate a new full sized buffer for the reception of a frame and
1501 * map it into PCI space for the hardware to use. The hardware
1502 * requires *64* byte alignment of the buffer which makes life
1503 * less fun than would be ideal.
1504 */
1505static int velocity_alloc_rx_buf(struct velocity_info *vptr, int idx)
1506{
1507 struct rx_desc *rd = &(vptr->rx.ring[idx]);
1508 struct velocity_rd_info *rd_info = &(vptr->rx.info[idx]);
1509
1510 rd_info->skb = dev_alloc_skb(vptr->rx.buf_sz + 64);
1511 if (rd_info->skb == NULL)
1512 return -ENOMEM;
1513
1514 /*
1515 * Do the gymnastics to get the buffer head for data at
1516 * 64byte alignment.
1517 */
Simon Kagstromda95b2d2009-11-25 22:09:53 +00001518 skb_reserve(rd_info->skb,
1519 64 - ((unsigned long) rd_info->skb->data & 63));
Dave Jones2cf71d22009-07-23 18:11:12 -07001520 rd_info->skb_dma = pci_map_single(vptr->pdev, rd_info->skb->data,
1521 vptr->rx.buf_sz, PCI_DMA_FROMDEVICE);
1522
1523 /*
1524 * Fill in the descriptor to match
1525 */
1526
1527 *((u32 *) & (rd->rdesc0)) = 0;
1528 rd->size = cpu_to_le16(vptr->rx.buf_sz) | RX_INTEN;
1529 rd->pa_low = cpu_to_le32(rd_info->skb_dma);
1530 rd->pa_high = 0;
1531 return 0;
1532}
1533
1534
1535static int velocity_rx_refill(struct velocity_info *vptr)
1536{
1537 int dirty = vptr->rx.dirty, done = 0;
1538
1539 do {
1540 struct rx_desc *rd = vptr->rx.ring + dirty;
1541
1542 /* Fine for an all zero Rx desc at init time as well */
1543 if (rd->rdesc0.len & OWNED_BY_NIC)
1544 break;
1545
1546 if (!vptr->rx.info[dirty].skb) {
1547 if (velocity_alloc_rx_buf(vptr, dirty) < 0)
1548 break;
1549 }
1550 done++;
1551 dirty = (dirty < vptr->options.numrx - 1) ? dirty + 1 : 0;
1552 } while (dirty != vptr->rx.curr);
1553
1554 if (done) {
1555 vptr->rx.dirty = dirty;
1556 vptr->rx.filled += done;
1557 }
1558
1559 return done;
1560}
1561
1562/**
1563 * velocity_free_rd_ring - free receive ring
1564 * @vptr: velocity to clean up
1565 *
1566 * Free the receive buffers for each ring slot and any
1567 * attached socket buffers that need to go away.
1568 */
1569static void velocity_free_rd_ring(struct velocity_info *vptr)
1570{
1571 int i;
1572
1573 if (vptr->rx.info == NULL)
1574 return;
1575
1576 for (i = 0; i < vptr->options.numrx; i++) {
1577 struct velocity_rd_info *rd_info = &(vptr->rx.info[i]);
1578 struct rx_desc *rd = vptr->rx.ring + i;
1579
1580 memset(rd, 0, sizeof(*rd));
1581
1582 if (!rd_info->skb)
1583 continue;
1584 pci_unmap_single(vptr->pdev, rd_info->skb_dma, vptr->rx.buf_sz,
1585 PCI_DMA_FROMDEVICE);
1586 rd_info->skb_dma = 0;
1587
1588 dev_kfree_skb(rd_info->skb);
1589 rd_info->skb = NULL;
1590 }
1591
1592 kfree(vptr->rx.info);
1593 vptr->rx.info = NULL;
1594}
1595
1596
1597
1598/**
1599 * velocity_init_rd_ring - set up receive ring
1600 * @vptr: velocity to configure
1601 *
1602 * Allocate and set up the receive buffers for each ring slot and
1603 * assign them to the network adapter.
1604 */
1605static int velocity_init_rd_ring(struct velocity_info *vptr)
1606{
1607 int ret = -ENOMEM;
1608
1609 vptr->rx.info = kcalloc(vptr->options.numrx,
1610 sizeof(struct velocity_rd_info), GFP_KERNEL);
1611 if (!vptr->rx.info)
1612 goto out;
1613
1614 velocity_init_rx_ring_indexes(vptr);
1615
1616 if (velocity_rx_refill(vptr) != vptr->options.numrx) {
1617 VELOCITY_PRT(MSG_LEVEL_ERR, KERN_ERR
1618 "%s: failed to allocate RX buffer.\n", vptr->dev->name);
1619 velocity_free_rd_ring(vptr);
1620 goto out;
1621 }
1622
1623 ret = 0;
1624out:
1625 return ret;
1626}
1627
1628/**
1629 * velocity_init_td_ring - set up transmit ring
1630 * @vptr: velocity
1631 *
1632 * Set up the transmit ring and chain the ring pointers together.
1633 * Returns zero on success or a negative posix errno code for
1634 * failure.
1635 */
1636static int velocity_init_td_ring(struct velocity_info *vptr)
1637{
Dave Jones2cf71d22009-07-23 18:11:12 -07001638 int j;
1639
1640 /* Init the TD ring entries */
1641 for (j = 0; j < vptr->tx.numq; j++) {
Dave Jones2cf71d22009-07-23 18:11:12 -07001642
1643 vptr->tx.infos[j] = kcalloc(vptr->options.numtx,
1644 sizeof(struct velocity_td_info),
1645 GFP_KERNEL);
1646 if (!vptr->tx.infos[j]) {
1647 while (--j >= 0)
1648 kfree(vptr->tx.infos[j]);
1649 return -ENOMEM;
1650 }
1651
1652 vptr->tx.tail[j] = vptr->tx.curr[j] = vptr->tx.used[j] = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001653 }
1654 return 0;
1655}
1656
Dave Jones2cf71d22009-07-23 18:11:12 -07001657/**
1658 * velocity_free_dma_rings - free PCI ring pointers
1659 * @vptr: Velocity to free from
1660 *
1661 * Clean up the PCI ring buffers allocated to this velocity.
1662 */
1663static void velocity_free_dma_rings(struct velocity_info *vptr)
1664{
1665 const int size = vptr->options.numrx * sizeof(struct rx_desc) +
1666 vptr->options.numtx * sizeof(struct tx_desc) * vptr->tx.numq;
1667
1668 pci_free_consistent(vptr->pdev, size, vptr->rx.ring, vptr->rx.pool_dma);
1669}
1670
1671
1672static int velocity_init_rings(struct velocity_info *vptr, int mtu)
1673{
1674 int ret;
1675
1676 velocity_set_rxbufsize(vptr, mtu);
1677
1678 ret = velocity_init_dma_rings(vptr);
1679 if (ret < 0)
1680 goto out;
1681
1682 ret = velocity_init_rd_ring(vptr);
1683 if (ret < 0)
1684 goto err_free_dma_rings_0;
1685
1686 ret = velocity_init_td_ring(vptr);
1687 if (ret < 0)
1688 goto err_free_rd_ring_1;
1689out:
1690 return ret;
1691
1692err_free_rd_ring_1:
1693 velocity_free_rd_ring(vptr);
1694err_free_dma_rings_0:
1695 velocity_free_dma_rings(vptr);
1696 goto out;
1697}
1698
1699/**
1700 * velocity_free_tx_buf - free transmit buffer
1701 * @vptr: velocity
1702 * @tdinfo: buffer
1703 *
1704 * Release an transmit buffer. If the buffer was preallocated then
1705 * recycle it, if not then unmap the buffer.
1706 */
Simon Kagstromc79992f2009-11-25 22:10:43 +00001707static void velocity_free_tx_buf(struct velocity_info *vptr,
1708 struct velocity_td_info *tdinfo, struct tx_desc *td)
Dave Jones2cf71d22009-07-23 18:11:12 -07001709{
1710 struct sk_buff *skb = tdinfo->skb;
Dave Jones2cf71d22009-07-23 18:11:12 -07001711
1712 /*
1713 * Don't unmap the pre-allocated tx_bufs
1714 */
1715 if (tdinfo->skb_dma) {
Simon Kagstromc79992f2009-11-25 22:10:43 +00001716 int i;
Dave Jones2cf71d22009-07-23 18:11:12 -07001717
Dave Jones2cf71d22009-07-23 18:11:12 -07001718 for (i = 0; i < tdinfo->nskb_dma; i++) {
Simon Kagstromc79992f2009-11-25 22:10:43 +00001719 size_t pktlen = max_t(size_t, skb->len, ETH_ZLEN);
1720
1721 /* For scatter-gather */
1722 if (skb_shinfo(skb)->nr_frags > 0)
1723 pktlen = max_t(size_t, pktlen,
1724 td->td_buf[i].size & ~TD_QUEUE);
1725
1726 pci_unmap_single(vptr->pdev, tdinfo->skb_dma[i],
1727 le16_to_cpu(pktlen), PCI_DMA_TODEVICE);
Dave Jones2cf71d22009-07-23 18:11:12 -07001728 }
1729 }
1730 dev_kfree_skb_irq(skb);
1731 tdinfo->skb = NULL;
1732}
1733
1734
1735/*
1736 * FIXME: could we merge this with velocity_free_tx_buf ?
1737 */
1738static void velocity_free_td_ring_entry(struct velocity_info *vptr,
1739 int q, int n)
1740{
1741 struct velocity_td_info *td_info = &(vptr->tx.infos[q][n]);
1742 int i;
1743
1744 if (td_info == NULL)
1745 return;
1746
1747 if (td_info->skb) {
1748 for (i = 0; i < td_info->nskb_dma; i++) {
1749 if (td_info->skb_dma[i]) {
1750 pci_unmap_single(vptr->pdev, td_info->skb_dma[i],
1751 td_info->skb->len, PCI_DMA_TODEVICE);
1752 td_info->skb_dma[i] = 0;
1753 }
1754 }
1755 dev_kfree_skb(td_info->skb);
1756 td_info->skb = NULL;
1757 }
1758}
1759
1760/**
1761 * velocity_free_td_ring - free td ring
1762 * @vptr: velocity
1763 *
1764 * Free up the transmit ring for this particular velocity adapter.
1765 * We free the ring contents but not the ring itself.
1766 */
1767static void velocity_free_td_ring(struct velocity_info *vptr)
1768{
1769 int i, j;
1770
1771 for (j = 0; j < vptr->tx.numq; j++) {
1772 if (vptr->tx.infos[j] == NULL)
1773 continue;
1774 for (i = 0; i < vptr->options.numtx; i++)
1775 velocity_free_td_ring_entry(vptr, j, i);
1776
1777 kfree(vptr->tx.infos[j]);
1778 vptr->tx.infos[j] = NULL;
1779 }
1780}
1781
1782
1783static void velocity_free_rings(struct velocity_info *vptr)
1784{
1785 velocity_free_td_ring(vptr);
1786 velocity_free_rd_ring(vptr);
1787 velocity_free_dma_rings(vptr);
1788}
1789
1790/**
1791 * velocity_error - handle error from controller
1792 * @vptr: velocity
1793 * @status: card status
1794 *
1795 * Process an error report from the hardware and attempt to recover
1796 * the card itself. At the moment we cannot recover from some
1797 * theoretically impossible errors but this could be fixed using
1798 * the pci_device_failed logic to bounce the hardware
1799 *
1800 */
1801static void velocity_error(struct velocity_info *vptr, int status)
1802{
1803
1804 if (status & ISR_TXSTLI) {
1805 struct mac_regs __iomem *regs = vptr->mac_regs;
1806
1807 printk(KERN_ERR "TD structure error TDindex=%hx\n", readw(&regs->TDIdx[0]));
1808 BYTE_REG_BITS_ON(TXESR_TDSTR, &regs->TXESR);
1809 writew(TRDCSR_RUN, &regs->TDCSRClr);
1810 netif_stop_queue(vptr->dev);
1811
1812 /* FIXME: port over the pci_device_failed code and use it
1813 here */
1814 }
1815
1816 if (status & ISR_SRCI) {
1817 struct mac_regs __iomem *regs = vptr->mac_regs;
1818 int linked;
1819
1820 if (vptr->options.spd_dpx == SPD_DPX_AUTO) {
1821 vptr->mii_status = check_connection_type(regs);
1822
1823 /*
1824 * If it is a 3119, disable frame bursting in
1825 * halfduplex mode and enable it in fullduplex
1826 * mode
1827 */
1828 if (vptr->rev_id < REV_ID_VT3216_A0) {
David S. Miller6cdee2f2009-09-02 00:32:56 -07001829 if (vptr->mii_status & VELOCITY_DUPLEX_FULL)
Dave Jones2cf71d22009-07-23 18:11:12 -07001830 BYTE_REG_BITS_ON(TCR_TB2BDIS, &regs->TCR);
1831 else
1832 BYTE_REG_BITS_OFF(TCR_TB2BDIS, &regs->TCR);
1833 }
1834 /*
1835 * Only enable CD heart beat counter in 10HD mode
1836 */
1837 if (!(vptr->mii_status & VELOCITY_DUPLEX_FULL) && (vptr->mii_status & VELOCITY_SPEED_10))
1838 BYTE_REG_BITS_OFF(TESTCFG_HBDIS, &regs->TESTCFG);
1839 else
1840 BYTE_REG_BITS_ON(TESTCFG_HBDIS, &regs->TESTCFG);
Simon Kagstrom6dfc4b92009-11-25 22:10:12 +00001841
1842 setup_queue_timers(vptr);
Dave Jones2cf71d22009-07-23 18:11:12 -07001843 }
1844 /*
1845 * Get link status from PHYSR0
1846 */
1847 linked = readb(&regs->PHYSR0) & PHYSR0_LINKGD;
1848
1849 if (linked) {
1850 vptr->mii_status &= ~VELOCITY_LINK_FAIL;
1851 netif_carrier_on(vptr->dev);
1852 } else {
1853 vptr->mii_status |= VELOCITY_LINK_FAIL;
1854 netif_carrier_off(vptr->dev);
1855 }
1856
1857 velocity_print_link_status(vptr);
1858 enable_flow_control_ability(vptr);
1859
1860 /*
1861 * Re-enable auto-polling because SRCI will disable
1862 * auto-polling
1863 */
1864
1865 enable_mii_autopoll(regs);
1866
1867 if (vptr->mii_status & VELOCITY_LINK_FAIL)
1868 netif_stop_queue(vptr->dev);
1869 else
1870 netif_wake_queue(vptr->dev);
1871
1872 };
1873 if (status & ISR_MIBFI)
1874 velocity_update_hw_mibs(vptr);
1875 if (status & ISR_LSTEI)
1876 mac_rx_queue_wake(vptr->mac_regs);
1877}
1878
1879/**
1880 * tx_srv - transmit interrupt service
1881 * @vptr; Velocity
Dave Jones2cf71d22009-07-23 18:11:12 -07001882 *
1883 * Scan the queues looking for transmitted packets that
1884 * we can complete and clean up. Update any statistics as
1885 * necessary/
1886 */
Simon Kagstromd6cade02010-02-09 23:37:54 +00001887static int velocity_tx_srv(struct velocity_info *vptr)
Dave Jones2cf71d22009-07-23 18:11:12 -07001888{
1889 struct tx_desc *td;
1890 int qnum;
1891 int full = 0;
1892 int idx;
1893 int works = 0;
1894 struct velocity_td_info *tdinfo;
1895 struct net_device_stats *stats = &vptr->dev->stats;
1896
1897 for (qnum = 0; qnum < vptr->tx.numq; qnum++) {
1898 for (idx = vptr->tx.tail[qnum]; vptr->tx.used[qnum] > 0;
1899 idx = (idx + 1) % vptr->options.numtx) {
1900
1901 /*
1902 * Get Tx Descriptor
1903 */
1904 td = &(vptr->tx.rings[qnum][idx]);
1905 tdinfo = &(vptr->tx.infos[qnum][idx]);
1906
1907 if (td->tdesc0.len & OWNED_BY_NIC)
1908 break;
1909
1910 if ((works++ > 15))
1911 break;
1912
1913 if (td->tdesc0.TSR & TSR0_TERR) {
1914 stats->tx_errors++;
1915 stats->tx_dropped++;
1916 if (td->tdesc0.TSR & TSR0_CDH)
1917 stats->tx_heartbeat_errors++;
1918 if (td->tdesc0.TSR & TSR0_CRS)
1919 stats->tx_carrier_errors++;
1920 if (td->tdesc0.TSR & TSR0_ABT)
1921 stats->tx_aborted_errors++;
1922 if (td->tdesc0.TSR & TSR0_OWC)
1923 stats->tx_window_errors++;
1924 } else {
1925 stats->tx_packets++;
1926 stats->tx_bytes += tdinfo->skb->len;
1927 }
Simon Kagstromc79992f2009-11-25 22:10:43 +00001928 velocity_free_tx_buf(vptr, tdinfo, td);
Dave Jones2cf71d22009-07-23 18:11:12 -07001929 vptr->tx.used[qnum]--;
1930 }
1931 vptr->tx.tail[qnum] = idx;
1932
1933 if (AVAIL_TD(vptr, qnum) < 1)
1934 full = 1;
1935 }
1936 /*
1937 * Look to see if we should kick the transmit network
1938 * layer for more work.
1939 */
Joe Perches8e95a202009-12-03 07:58:21 +00001940 if (netif_queue_stopped(vptr->dev) && (full == 0) &&
1941 (!(vptr->mii_status & VELOCITY_LINK_FAIL))) {
Dave Jones2cf71d22009-07-23 18:11:12 -07001942 netif_wake_queue(vptr->dev);
1943 }
1944 return works;
1945}
1946
1947/**
1948 * velocity_rx_csum - checksum process
1949 * @rd: receive packet descriptor
1950 * @skb: network layer packet buffer
1951 *
1952 * Process the status bits for the received packet and determine
1953 * if the checksum was computed and verified by the hardware
1954 */
1955static inline void velocity_rx_csum(struct rx_desc *rd, struct sk_buff *skb)
1956{
1957 skb->ip_summed = CHECKSUM_NONE;
1958
1959 if (rd->rdesc1.CSM & CSM_IPKT) {
1960 if (rd->rdesc1.CSM & CSM_IPOK) {
1961 if ((rd->rdesc1.CSM & CSM_TCPKT) ||
1962 (rd->rdesc1.CSM & CSM_UDPKT)) {
1963 if (!(rd->rdesc1.CSM & CSM_TUPOK))
1964 return;
1965 }
1966 skb->ip_summed = CHECKSUM_UNNECESSARY;
1967 }
1968 }
1969}
1970
1971/**
1972 * velocity_rx_copy - in place Rx copy for small packets
1973 * @rx_skb: network layer packet buffer candidate
1974 * @pkt_size: received data size
1975 * @rd: receive packet descriptor
1976 * @dev: network device
1977 *
1978 * Replace the current skb that is scheduled for Rx processing by a
1979 * shorter, immediatly allocated skb, if the received packet is small
1980 * enough. This function returns a negative value if the received
1981 * packet is too big or if memory is exhausted.
1982 */
1983static int velocity_rx_copy(struct sk_buff **rx_skb, int pkt_size,
1984 struct velocity_info *vptr)
1985{
1986 int ret = -1;
1987 if (pkt_size < rx_copybreak) {
1988 struct sk_buff *new_skb;
1989
Eric Dumazet89d71a62009-10-13 05:34:20 +00001990 new_skb = netdev_alloc_skb_ip_align(vptr->dev, pkt_size);
Dave Jones2cf71d22009-07-23 18:11:12 -07001991 if (new_skb) {
1992 new_skb->ip_summed = rx_skb[0]->ip_summed;
Dave Jones2cf71d22009-07-23 18:11:12 -07001993 skb_copy_from_linear_data(*rx_skb, new_skb->data, pkt_size);
1994 *rx_skb = new_skb;
1995 ret = 0;
1996 }
1997
1998 }
1999 return ret;
2000}
2001
2002/**
2003 * velocity_iph_realign - IP header alignment
2004 * @vptr: velocity we are handling
2005 * @skb: network layer packet buffer
2006 * @pkt_size: received data size
2007 *
2008 * Align IP header on a 2 bytes boundary. This behavior can be
2009 * configured by the user.
2010 */
2011static inline void velocity_iph_realign(struct velocity_info *vptr,
2012 struct sk_buff *skb, int pkt_size)
2013{
2014 if (vptr->flags & VELOCITY_FLAGS_IP_ALIGN) {
2015 memmove(skb->data + 2, skb->data, pkt_size);
2016 skb_reserve(skb, 2);
2017 }
2018}
2019
2020
2021/**
2022 * velocity_receive_frame - received packet processor
2023 * @vptr: velocity we are handling
2024 * @idx: ring index
2025 *
2026 * A packet has arrived. We process the packet and if appropriate
2027 * pass the frame up the network stack
2028 */
2029static int velocity_receive_frame(struct velocity_info *vptr, int idx)
2030{
2031 void (*pci_action)(struct pci_dev *, dma_addr_t, size_t, int);
2032 struct net_device_stats *stats = &vptr->dev->stats;
2033 struct velocity_rd_info *rd_info = &(vptr->rx.info[idx]);
2034 struct rx_desc *rd = &(vptr->rx.ring[idx]);
2035 int pkt_len = le16_to_cpu(rd->rdesc0.len) & 0x3fff;
2036 struct sk_buff *skb;
2037
2038 if (rd->rdesc0.RSR & (RSR_STP | RSR_EDP)) {
2039 VELOCITY_PRT(MSG_LEVEL_VERBOSE, KERN_ERR " %s : the received frame span multple RDs.\n", vptr->dev->name);
2040 stats->rx_length_errors++;
2041 return -EINVAL;
2042 }
2043
2044 if (rd->rdesc0.RSR & RSR_MAR)
2045 stats->multicast++;
2046
2047 skb = rd_info->skb;
2048
2049 pci_dma_sync_single_for_cpu(vptr->pdev, rd_info->skb_dma,
2050 vptr->rx.buf_sz, PCI_DMA_FROMDEVICE);
2051
2052 /*
2053 * Drop frame not meeting IEEE 802.3
2054 */
2055
2056 if (vptr->flags & VELOCITY_FLAGS_VAL_PKT_LEN) {
2057 if (rd->rdesc0.RSR & RSR_RL) {
2058 stats->rx_length_errors++;
2059 return -EINVAL;
2060 }
2061 }
2062
2063 pci_action = pci_dma_sync_single_for_device;
2064
2065 velocity_rx_csum(rd, skb);
2066
2067 if (velocity_rx_copy(&skb, pkt_len, vptr) < 0) {
2068 velocity_iph_realign(vptr, skb, pkt_len);
2069 pci_action = pci_unmap_single;
2070 rd_info->skb = NULL;
2071 }
2072
2073 pci_action(vptr->pdev, rd_info->skb_dma, vptr->rx.buf_sz,
2074 PCI_DMA_FROMDEVICE);
2075
2076 skb_put(skb, pkt_len - 4);
2077 skb->protocol = eth_type_trans(skb, vptr->dev);
2078
2079 if (vptr->vlgrp && (rd->rdesc0.RSR & RSR_DETAG)) {
2080 vlan_hwaccel_rx(skb, vptr->vlgrp,
2081 swab16(le16_to_cpu(rd->rdesc1.PQTAG)));
2082 } else
2083 netif_rx(skb);
2084
2085 stats->rx_bytes += pkt_len;
2086
2087 return 0;
2088}
2089
2090
2091/**
2092 * velocity_rx_srv - service RX interrupt
2093 * @vptr: velocity
Dave Jones2cf71d22009-07-23 18:11:12 -07002094 *
2095 * Walk the receive ring of the velocity adapter and remove
2096 * any received packets from the receive queue. Hand the ring
2097 * slots back to the adapter for reuse.
2098 */
Simon Kagstromd6cade02010-02-09 23:37:54 +00002099static int velocity_rx_srv(struct velocity_info *vptr, int budget_left)
Dave Jones2cf71d22009-07-23 18:11:12 -07002100{
2101 struct net_device_stats *stats = &vptr->dev->stats;
2102 int rd_curr = vptr->rx.curr;
2103 int works = 0;
2104
Simon Kagstromdfff7142009-11-25 22:10:26 +00002105 while (works < budget_left) {
Dave Jones2cf71d22009-07-23 18:11:12 -07002106 struct rx_desc *rd = vptr->rx.ring + rd_curr;
2107
2108 if (!vptr->rx.info[rd_curr].skb)
2109 break;
2110
2111 if (rd->rdesc0.len & OWNED_BY_NIC)
2112 break;
2113
2114 rmb();
2115
2116 /*
2117 * Don't drop CE or RL error frame although RXOK is off
2118 */
2119 if (rd->rdesc0.RSR & (RSR_RXOK | RSR_CE | RSR_RL)) {
2120 if (velocity_receive_frame(vptr, rd_curr) < 0)
2121 stats->rx_dropped++;
2122 } else {
2123 if (rd->rdesc0.RSR & RSR_CRC)
2124 stats->rx_crc_errors++;
2125 if (rd->rdesc0.RSR & RSR_FAE)
2126 stats->rx_frame_errors++;
2127
2128 stats->rx_dropped++;
2129 }
2130
2131 rd->size |= RX_INTEN;
2132
2133 rd_curr++;
2134 if (rd_curr >= vptr->options.numrx)
2135 rd_curr = 0;
Simon Kagstromdfff7142009-11-25 22:10:26 +00002136 works++;
2137 }
Dave Jones2cf71d22009-07-23 18:11:12 -07002138
2139 vptr->rx.curr = rd_curr;
2140
2141 if ((works > 0) && (velocity_rx_refill(vptr) > 0))
2142 velocity_give_many_rx_descs(vptr);
2143
2144 VAR_USED(stats);
2145 return works;
2146}
2147
Simon Kagstromdfff7142009-11-25 22:10:26 +00002148static int velocity_poll(struct napi_struct *napi, int budget)
2149{
2150 struct velocity_info *vptr = container_of(napi,
2151 struct velocity_info, napi);
2152 unsigned int rx_done;
Simon Kagstrom3f2e8d92010-02-09 23:38:25 +00002153 unsigned long flags;
Simon Kagstromdfff7142009-11-25 22:10:26 +00002154
Simon Kagstrom3f2e8d92010-02-09 23:38:25 +00002155 spin_lock_irqsave(&vptr->lock, flags);
Simon Kagstromdfff7142009-11-25 22:10:26 +00002156 /*
2157 * Do rx and tx twice for performance (taken from the VIA
2158 * out-of-tree driver).
2159 */
Simon Kagstromd6cade02010-02-09 23:37:54 +00002160 rx_done = velocity_rx_srv(vptr, budget / 2);
2161 velocity_tx_srv(vptr);
2162 rx_done += velocity_rx_srv(vptr, budget - rx_done);
2163 velocity_tx_srv(vptr);
Simon Kagstromdfff7142009-11-25 22:10:26 +00002164
2165 /* If budget not fully consumed, exit the polling mode */
2166 if (rx_done < budget) {
2167 napi_complete(napi);
2168 mac_enable_int(vptr->mac_regs);
2169 }
Simon Kagstrom3f2e8d92010-02-09 23:38:25 +00002170 spin_unlock_irqrestore(&vptr->lock, flags);
Simon Kagstromdfff7142009-11-25 22:10:26 +00002171
2172 return rx_done;
2173}
Dave Jones2cf71d22009-07-23 18:11:12 -07002174
2175/**
2176 * velocity_intr - interrupt callback
2177 * @irq: interrupt number
2178 * @dev_instance: interrupting device
2179 *
2180 * Called whenever an interrupt is generated by the velocity
2181 * adapter IRQ line. We may not be the source of the interrupt
2182 * and need to identify initially if we are, and if not exit as
2183 * efficiently as possible.
2184 */
2185static irqreturn_t velocity_intr(int irq, void *dev_instance)
2186{
2187 struct net_device *dev = dev_instance;
2188 struct velocity_info *vptr = netdev_priv(dev);
2189 u32 isr_status;
Dave Jones2cf71d22009-07-23 18:11:12 -07002190
2191 spin_lock(&vptr->lock);
2192 isr_status = mac_read_isr(vptr->mac_regs);
2193
2194 /* Not us ? */
2195 if (isr_status == 0) {
2196 spin_unlock(&vptr->lock);
2197 return IRQ_NONE;
2198 }
2199
Simon Kagstrom3f2e8d92010-02-09 23:38:25 +00002200 /* Ack the interrupt */
2201 mac_write_isr(vptr->mac_regs, isr_status);
2202
Simon Kagstromdfff7142009-11-25 22:10:26 +00002203 if (likely(napi_schedule_prep(&vptr->napi))) {
2204 mac_disable_int(vptr->mac_regs);
2205 __napi_schedule(&vptr->napi);
Dave Jones2cf71d22009-07-23 18:11:12 -07002206 }
Simon Kagstrom3f2e8d92010-02-09 23:38:25 +00002207
2208 if (isr_status & (~(ISR_PRXI | ISR_PPRXI | ISR_PTXI | ISR_PPTXI)))
2209 velocity_error(vptr, isr_status);
2210
Dave Jones2cf71d22009-07-23 18:11:12 -07002211 spin_unlock(&vptr->lock);
Dave Jones2cf71d22009-07-23 18:11:12 -07002212
Simon Kagstromdfff7142009-11-25 22:10:26 +00002213 return IRQ_HANDLED;
Dave Jones2cf71d22009-07-23 18:11:12 -07002214}
2215
2216/**
2217 * velocity_open - interface activation callback
2218 * @dev: network layer device to open
2219 *
2220 * Called when the network layer brings the interface up. Returns
2221 * a negative posix error code on failure, or zero on success.
2222 *
2223 * All the ring allocation and set up is done on open for this
2224 * adapter to minimise memory usage when inactive
2225 */
2226static int velocity_open(struct net_device *dev)
2227{
2228 struct velocity_info *vptr = netdev_priv(dev);
2229 int ret;
2230
2231 ret = velocity_init_rings(vptr, dev->mtu);
2232 if (ret < 0)
2233 goto out;
2234
2235 /* Ensure chip is running */
2236 pci_set_power_state(vptr->pdev, PCI_D0);
2237
Dave Jones2cf71d22009-07-23 18:11:12 -07002238 velocity_init_registers(vptr, VELOCITY_INIT_COLD);
2239
Julia Lawall1ede9b52009-11-18 08:24:13 +00002240 ret = request_irq(vptr->pdev->irq, velocity_intr, IRQF_SHARED,
Dave Jones2cf71d22009-07-23 18:11:12 -07002241 dev->name, dev);
2242 if (ret < 0) {
2243 /* Power down the chip */
2244 pci_set_power_state(vptr->pdev, PCI_D3hot);
2245 velocity_free_rings(vptr);
2246 goto out;
2247 }
2248
Ben Hutchings35bb5ca2009-12-14 16:05:09 +00002249 velocity_give_many_rx_descs(vptr);
2250
Dave Jones2cf71d22009-07-23 18:11:12 -07002251 mac_enable_int(vptr->mac_regs);
2252 netif_start_queue(dev);
Simon Kagstromdfff7142009-11-25 22:10:26 +00002253 napi_enable(&vptr->napi);
Dave Jones2cf71d22009-07-23 18:11:12 -07002254 vptr->flags |= VELOCITY_FLAGS_OPENED;
2255out:
2256 return ret;
2257}
2258
2259/**
2260 * velocity_shutdown - shut down the chip
2261 * @vptr: velocity to deactivate
2262 *
2263 * Shuts down the internal operations of the velocity and
2264 * disables interrupts, autopolling, transmit and receive
2265 */
2266static void velocity_shutdown(struct velocity_info *vptr)
2267{
2268 struct mac_regs __iomem *regs = vptr->mac_regs;
2269 mac_disable_int(regs);
2270 writel(CR0_STOP, &regs->CR0Set);
2271 writew(0xFFFF, &regs->TDCSRClr);
2272 writeb(0xFF, &regs->RDCSRClr);
2273 safe_disable_mii_autopoll(regs);
2274 mac_clear_isr(regs);
2275}
2276
2277/**
2278 * velocity_change_mtu - MTU change callback
2279 * @dev: network device
2280 * @new_mtu: desired MTU
2281 *
2282 * Handle requests from the networking layer for MTU change on
2283 * this interface. It gets called on a change by the network layer.
2284 * Return zero for success or negative posix error code.
2285 */
2286static int velocity_change_mtu(struct net_device *dev, int new_mtu)
2287{
2288 struct velocity_info *vptr = netdev_priv(dev);
2289 int ret = 0;
2290
2291 if ((new_mtu < VELOCITY_MIN_MTU) || new_mtu > (VELOCITY_MAX_MTU)) {
2292 VELOCITY_PRT(MSG_LEVEL_ERR, KERN_NOTICE "%s: Invalid MTU.\n",
2293 vptr->dev->name);
2294 ret = -EINVAL;
2295 goto out_0;
2296 }
2297
2298 if (!netif_running(dev)) {
2299 dev->mtu = new_mtu;
2300 goto out_0;
2301 }
2302
2303 if (dev->mtu != new_mtu) {
2304 struct velocity_info *tmp_vptr;
2305 unsigned long flags;
2306 struct rx_info rx;
2307 struct tx_info tx;
2308
2309 tmp_vptr = kzalloc(sizeof(*tmp_vptr), GFP_KERNEL);
2310 if (!tmp_vptr) {
2311 ret = -ENOMEM;
2312 goto out_0;
2313 }
2314
2315 tmp_vptr->dev = dev;
2316 tmp_vptr->pdev = vptr->pdev;
2317 tmp_vptr->options = vptr->options;
2318 tmp_vptr->tx.numq = vptr->tx.numq;
2319
2320 ret = velocity_init_rings(tmp_vptr, new_mtu);
2321 if (ret < 0)
2322 goto out_free_tmp_vptr_1;
2323
2324 spin_lock_irqsave(&vptr->lock, flags);
2325
2326 netif_stop_queue(dev);
2327 velocity_shutdown(vptr);
2328
2329 rx = vptr->rx;
2330 tx = vptr->tx;
2331
2332 vptr->rx = tmp_vptr->rx;
2333 vptr->tx = tmp_vptr->tx;
2334
2335 tmp_vptr->rx = rx;
2336 tmp_vptr->tx = tx;
2337
2338 dev->mtu = new_mtu;
2339
Dave Jones2cf71d22009-07-23 18:11:12 -07002340 velocity_init_registers(vptr, VELOCITY_INIT_COLD);
2341
Ben Hutchings35bb5ca2009-12-14 16:05:09 +00002342 velocity_give_many_rx_descs(vptr);
2343
Dave Jones2cf71d22009-07-23 18:11:12 -07002344 mac_enable_int(vptr->mac_regs);
2345 netif_start_queue(dev);
2346
2347 spin_unlock_irqrestore(&vptr->lock, flags);
2348
2349 velocity_free_rings(tmp_vptr);
2350
2351out_free_tmp_vptr_1:
2352 kfree(tmp_vptr);
2353 }
2354out_0:
2355 return ret;
2356}
2357
2358/**
2359 * velocity_mii_ioctl - MII ioctl handler
2360 * @dev: network device
2361 * @ifr: the ifreq block for the ioctl
2362 * @cmd: the command
2363 *
2364 * Process MII requests made via ioctl from the network layer. These
2365 * are used by tools like kudzu to interrogate the link state of the
2366 * hardware
2367 */
2368static int velocity_mii_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
2369{
2370 struct velocity_info *vptr = netdev_priv(dev);
2371 struct mac_regs __iomem *regs = vptr->mac_regs;
2372 unsigned long flags;
2373 struct mii_ioctl_data *miidata = if_mii(ifr);
2374 int err;
2375
2376 switch (cmd) {
2377 case SIOCGMIIPHY:
2378 miidata->phy_id = readb(&regs->MIIADR) & 0x1f;
2379 break;
2380 case SIOCGMIIREG:
Dave Jones2cf71d22009-07-23 18:11:12 -07002381 if (velocity_mii_read(vptr->mac_regs, miidata->reg_num & 0x1f, &(miidata->val_out)) < 0)
2382 return -ETIMEDOUT;
2383 break;
2384 case SIOCSMIIREG:
Dave Jones2cf71d22009-07-23 18:11:12 -07002385 spin_lock_irqsave(&vptr->lock, flags);
2386 err = velocity_mii_write(vptr->mac_regs, miidata->reg_num & 0x1f, miidata->val_in);
2387 spin_unlock_irqrestore(&vptr->lock, flags);
2388 check_connection_type(vptr->mac_regs);
2389 if (err)
2390 return err;
2391 break;
2392 default:
2393 return -EOPNOTSUPP;
2394 }
2395 return 0;
2396}
2397
2398
2399/**
2400 * velocity_ioctl - ioctl entry point
2401 * @dev: network device
2402 * @rq: interface request ioctl
2403 * @cmd: command code
2404 *
2405 * Called when the user issues an ioctl request to the network
2406 * device in question. The velocity interface supports MII.
2407 */
2408static int velocity_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2409{
2410 struct velocity_info *vptr = netdev_priv(dev);
2411 int ret;
2412
2413 /* If we are asked for information and the device is power
2414 saving then we need to bring the device back up to talk to it */
2415
2416 if (!netif_running(dev))
2417 pci_set_power_state(vptr->pdev, PCI_D0);
2418
2419 switch (cmd) {
2420 case SIOCGMIIPHY: /* Get address of MII PHY in use. */
2421 case SIOCGMIIREG: /* Read MII PHY register. */
2422 case SIOCSMIIREG: /* Write to MII PHY register. */
2423 ret = velocity_mii_ioctl(dev, rq, cmd);
2424 break;
2425
2426 default:
2427 ret = -EOPNOTSUPP;
2428 }
2429 if (!netif_running(dev))
2430 pci_set_power_state(vptr->pdev, PCI_D3hot);
2431
2432
2433 return ret;
2434}
2435
2436/**
2437 * velocity_get_status - statistics callback
2438 * @dev: network device
2439 *
2440 * Callback from the network layer to allow driver statistics
2441 * to be resynchronized with hardware collected state. In the
2442 * case of the velocity we need to pull the MIB counters from
2443 * the hardware into the counters before letting the network
2444 * layer display them.
2445 */
2446static struct net_device_stats *velocity_get_stats(struct net_device *dev)
2447{
2448 struct velocity_info *vptr = netdev_priv(dev);
2449
2450 /* If the hardware is down, don't touch MII */
2451 if (!netif_running(dev))
2452 return &dev->stats;
2453
2454 spin_lock_irq(&vptr->lock);
2455 velocity_update_hw_mibs(vptr);
2456 spin_unlock_irq(&vptr->lock);
2457
2458 dev->stats.rx_packets = vptr->mib_counter[HW_MIB_ifRxAllPkts];
2459 dev->stats.rx_errors = vptr->mib_counter[HW_MIB_ifRxErrorPkts];
2460 dev->stats.rx_length_errors = vptr->mib_counter[HW_MIB_ifInRangeLengthErrors];
2461
2462// unsigned long rx_dropped; /* no space in linux buffers */
2463 dev->stats.collisions = vptr->mib_counter[HW_MIB_ifTxEtherCollisions];
2464 /* detailed rx_errors: */
2465// unsigned long rx_length_errors;
2466// unsigned long rx_over_errors; /* receiver ring buff overflow */
2467 dev->stats.rx_crc_errors = vptr->mib_counter[HW_MIB_ifRxPktCRCE];
2468// unsigned long rx_frame_errors; /* recv'd frame alignment error */
2469// unsigned long rx_fifo_errors; /* recv'r fifo overrun */
2470// unsigned long rx_missed_errors; /* receiver missed packet */
2471
2472 /* detailed tx_errors */
2473// unsigned long tx_fifo_errors;
2474
2475 return &dev->stats;
2476}
2477
2478/**
2479 * velocity_close - close adapter callback
2480 * @dev: network device
2481 *
2482 * Callback from the network layer when the velocity is being
2483 * deactivated by the network layer
2484 */
2485static int velocity_close(struct net_device *dev)
2486{
2487 struct velocity_info *vptr = netdev_priv(dev);
2488
Simon Kagstromdfff7142009-11-25 22:10:26 +00002489 napi_disable(&vptr->napi);
Dave Jones2cf71d22009-07-23 18:11:12 -07002490 netif_stop_queue(dev);
2491 velocity_shutdown(vptr);
2492
2493 if (vptr->flags & VELOCITY_FLAGS_WOL_ENABLED)
2494 velocity_get_ip(vptr);
2495 if (dev->irq != 0)
2496 free_irq(dev->irq, dev);
2497
2498 /* Power down the chip */
2499 pci_set_power_state(vptr->pdev, PCI_D3hot);
2500
2501 velocity_free_rings(vptr);
2502
2503 vptr->flags &= (~VELOCITY_FLAGS_OPENED);
2504 return 0;
2505}
2506
2507/**
2508 * velocity_xmit - transmit packet callback
2509 * @skb: buffer to transmit
2510 * @dev: network device
2511 *
2512 * Called by the networ layer to request a packet is queued to
2513 * the velocity. Returns zero on success.
2514 */
Stephen Hemminger613573252009-08-31 19:50:58 +00002515static netdev_tx_t velocity_xmit(struct sk_buff *skb,
2516 struct net_device *dev)
Dave Jones2cf71d22009-07-23 18:11:12 -07002517{
2518 struct velocity_info *vptr = netdev_priv(dev);
2519 int qnum = 0;
2520 struct tx_desc *td_ptr;
2521 struct velocity_td_info *tdinfo;
2522 unsigned long flags;
2523 int pktlen;
Simon Kagstromc79992f2009-11-25 22:10:43 +00002524 int index, prev;
2525 int i = 0;
Dave Jones2cf71d22009-07-23 18:11:12 -07002526
2527 if (skb_padto(skb, ETH_ZLEN))
2528 goto out;
Dave Jones2cf71d22009-07-23 18:11:12 -07002529
Simon Kagstromc79992f2009-11-25 22:10:43 +00002530 /* The hardware can handle at most 7 memory segments, so merge
2531 * the skb if there are more */
2532 if (skb_shinfo(skb)->nr_frags > 6 && __skb_linearize(skb)) {
2533 kfree_skb(skb);
2534 return NETDEV_TX_OK;
2535 }
2536
2537 pktlen = skb_shinfo(skb)->nr_frags == 0 ?
2538 max_t(unsigned int, skb->len, ETH_ZLEN) :
2539 skb_headlen(skb);
Dave Jones2cf71d22009-07-23 18:11:12 -07002540
2541 spin_lock_irqsave(&vptr->lock, flags);
2542
2543 index = vptr->tx.curr[qnum];
2544 td_ptr = &(vptr->tx.rings[qnum][index]);
2545 tdinfo = &(vptr->tx.infos[qnum][index]);
2546
2547 td_ptr->tdesc1.TCR = TCR0_TIC;
2548 td_ptr->td_buf[0].size &= ~TD_QUEUE;
2549
2550 /*
2551 * Map the linear network buffer into PCI space and
2552 * add it to the transmit ring.
2553 */
2554 tdinfo->skb = skb;
2555 tdinfo->skb_dma[0] = pci_map_single(vptr->pdev, skb->data, pktlen, PCI_DMA_TODEVICE);
Simon Kagstromc79992f2009-11-25 22:10:43 +00002556 td_ptr->tdesc0.len = cpu_to_le16(pktlen);
Dave Jones2cf71d22009-07-23 18:11:12 -07002557 td_ptr->td_buf[0].pa_low = cpu_to_le32(tdinfo->skb_dma[0]);
2558 td_ptr->td_buf[0].pa_high = 0;
Simon Kagstromc79992f2009-11-25 22:10:43 +00002559 td_ptr->td_buf[0].size = cpu_to_le16(pktlen);
2560
2561 /* Handle fragments */
2562 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
2563 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
2564
2565 tdinfo->skb_dma[i + 1] = pci_map_page(vptr->pdev, frag->page,
2566 frag->page_offset, frag->size,
2567 PCI_DMA_TODEVICE);
2568
2569 td_ptr->td_buf[i + 1].pa_low = cpu_to_le32(tdinfo->skb_dma[i + 1]);
2570 td_ptr->td_buf[i + 1].pa_high = 0;
2571 td_ptr->td_buf[i + 1].size = cpu_to_le16(frag->size);
2572 }
2573 tdinfo->nskb_dma = i + 1;
Dave Jones2cf71d22009-07-23 18:11:12 -07002574
2575 td_ptr->tdesc1.cmd = TCPLS_NORMAL + (tdinfo->nskb_dma + 1) * 16;
2576
2577 if (vptr->vlgrp && vlan_tx_tag_present(skb)) {
2578 td_ptr->tdesc1.vlan = cpu_to_le16(vlan_tx_tag_get(skb));
2579 td_ptr->tdesc1.TCR |= TCR0_VETAG;
2580 }
2581
2582 /*
2583 * Handle hardware checksum
2584 */
Joe Perches8e95a202009-12-03 07:58:21 +00002585 if ((dev->features & NETIF_F_IP_CSUM) &&
2586 (skb->ip_summed == CHECKSUM_PARTIAL)) {
Dave Jones2cf71d22009-07-23 18:11:12 -07002587 const struct iphdr *ip = ip_hdr(skb);
2588 if (ip->protocol == IPPROTO_TCP)
2589 td_ptr->tdesc1.TCR |= TCR0_TCPCK;
2590 else if (ip->protocol == IPPROTO_UDP)
2591 td_ptr->tdesc1.TCR |= (TCR0_UDPCK);
2592 td_ptr->tdesc1.TCR |= TCR0_IPCK;
2593 }
Dave Jones2cf71d22009-07-23 18:11:12 -07002594
Simon Kagstromc79992f2009-11-25 22:10:43 +00002595 prev = index - 1;
2596 if (prev < 0)
2597 prev = vptr->options.numtx - 1;
2598 td_ptr->tdesc0.len |= OWNED_BY_NIC;
2599 vptr->tx.used[qnum]++;
2600 vptr->tx.curr[qnum] = (index + 1) % vptr->options.numtx;
Dave Jones2cf71d22009-07-23 18:11:12 -07002601
Simon Kagstromc79992f2009-11-25 22:10:43 +00002602 if (AVAIL_TD(vptr, qnum) < 1)
2603 netif_stop_queue(dev);
Dave Jones2cf71d22009-07-23 18:11:12 -07002604
Simon Kagstromc79992f2009-11-25 22:10:43 +00002605 td_ptr = &(vptr->tx.rings[qnum][prev]);
2606 td_ptr->td_buf[0].size |= TD_QUEUE;
2607 mac_tx_queue_wake(vptr->mac_regs, qnum);
Dave Jones2cf71d22009-07-23 18:11:12 -07002608
Dave Jones2cf71d22009-07-23 18:11:12 -07002609 spin_unlock_irqrestore(&vptr->lock, flags);
2610out:
2611 return NETDEV_TX_OK;
2612}
2613
2614
Stephen Hemminger39a11bd2008-11-19 22:19:33 -08002615static const struct net_device_ops velocity_netdev_ops = {
2616 .ndo_open = velocity_open,
2617 .ndo_stop = velocity_close,
Stephen Hemminger00829822008-11-20 20:14:53 -08002618 .ndo_start_xmit = velocity_xmit,
Stephen Hemminger39a11bd2008-11-19 22:19:33 -08002619 .ndo_get_stats = velocity_get_stats,
2620 .ndo_validate_addr = eth_validate_addr,
Stephen Hemmingerfe96aaa2009-01-09 11:13:14 +00002621 .ndo_set_mac_address = eth_mac_addr,
Stephen Hemminger39a11bd2008-11-19 22:19:33 -08002622 .ndo_set_multicast_list = velocity_set_multi,
2623 .ndo_change_mtu = velocity_change_mtu,
2624 .ndo_do_ioctl = velocity_ioctl,
2625 .ndo_vlan_rx_add_vid = velocity_vlan_rx_add_vid,
2626 .ndo_vlan_rx_kill_vid = velocity_vlan_rx_kill_vid,
2627 .ndo_vlan_rx_register = velocity_vlan_rx_register,
2628};
2629
Linus Torvalds1da177e2005-04-16 15:20:36 -07002630/**
Dave Jones2cf71d22009-07-23 18:11:12 -07002631 * velocity_init_info - init private data
2632 * @pdev: PCI device
2633 * @vptr: Velocity info
2634 * @info: Board type
2635 *
2636 * Set up the initial velocity_info struct for the device that has been
2637 * discovered.
2638 */
2639static void __devinit velocity_init_info(struct pci_dev *pdev,
2640 struct velocity_info *vptr,
2641 const struct velocity_info_tbl *info)
2642{
2643 memset(vptr, 0, sizeof(struct velocity_info));
2644
2645 vptr->pdev = pdev;
2646 vptr->chip_id = info->chip_id;
2647 vptr->tx.numq = info->txqueue;
2648 vptr->multicast_limit = MCAM_SIZE;
2649 spin_lock_init(&vptr->lock);
Dave Jones2cf71d22009-07-23 18:11:12 -07002650}
2651
2652/**
2653 * velocity_get_pci_info - retrieve PCI info for device
2654 * @vptr: velocity device
2655 * @pdev: PCI device it matches
2656 *
2657 * Retrieve the PCI configuration space data that interests us from
2658 * the kernel PCI layer
2659 */
2660static int __devinit velocity_get_pci_info(struct velocity_info *vptr, struct pci_dev *pdev)
2661{
2662 vptr->rev_id = pdev->revision;
2663
2664 pci_set_master(pdev);
2665
2666 vptr->ioaddr = pci_resource_start(pdev, 0);
2667 vptr->memaddr = pci_resource_start(pdev, 1);
2668
2669 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_IO)) {
2670 dev_err(&pdev->dev,
2671 "region #0 is not an I/O resource, aborting.\n");
2672 return -EINVAL;
2673 }
2674
2675 if ((pci_resource_flags(pdev, 1) & IORESOURCE_IO)) {
2676 dev_err(&pdev->dev,
2677 "region #1 is an I/O resource, aborting.\n");
2678 return -EINVAL;
2679 }
2680
2681 if (pci_resource_len(pdev, 1) < VELOCITY_IO_SIZE) {
2682 dev_err(&pdev->dev, "region #1 is too small.\n");
2683 return -EINVAL;
2684 }
2685 vptr->pdev = pdev;
2686
2687 return 0;
2688}
2689
2690/**
2691 * velocity_print_info - per driver data
2692 * @vptr: velocity
2693 *
2694 * Print per driver data as the kernel driver finds Velocity
2695 * hardware
2696 */
2697static void __devinit velocity_print_info(struct velocity_info *vptr)
2698{
2699 struct net_device *dev = vptr->dev;
2700
2701 printk(KERN_INFO "%s: %s\n", dev->name, get_chip_name(vptr->chip_id));
H Hartley Sweetenaa7c68a2009-12-29 20:04:14 -08002702 printk(KERN_INFO "%s: Ethernet Address: %pM\n",
2703 dev->name, dev->dev_addr);
Dave Jones2cf71d22009-07-23 18:11:12 -07002704}
2705
2706static u32 velocity_get_link(struct net_device *dev)
2707{
2708 struct velocity_info *vptr = netdev_priv(dev);
2709 struct mac_regs __iomem *regs = vptr->mac_regs;
2710 return BYTE_REG_BITS_IS_ON(PHYSR0_LINKGD, &regs->PHYSR0) ? 1 : 0;
2711}
2712
2713
2714/**
Linus Torvalds1da177e2005-04-16 15:20:36 -07002715 * velocity_found1 - set up discovered velocity card
2716 * @pdev: PCI device
2717 * @ent: PCI device table entry that matched
2718 *
2719 * Configure a discovered adapter from scratch. Return a negative
2720 * errno error code on failure paths.
2721 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002722static int __devinit velocity_found1(struct pci_dev *pdev, const struct pci_device_id *ent)
2723{
2724 static int first = 1;
2725 struct net_device *dev;
2726 int i;
Sven Hartge07b5f6a2008-10-23 13:03:44 +00002727 const char *drv_string;
Jeff Garzikcabb7662006-06-27 09:25:28 -04002728 const struct velocity_info_tbl *info = &chip_info_table[ent->driver_data];
Linus Torvalds1da177e2005-04-16 15:20:36 -07002729 struct velocity_info *vptr;
Dave Jonesc4067402009-07-20 17:35:21 +00002730 struct mac_regs __iomem *regs;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002731 int ret = -ENOMEM;
2732
Jeff Garzike54f4892006-06-27 09:20:08 -04002733 /* FIXME: this driver, like almost all other ethernet drivers,
2734 * can support more than MAX_UNITS.
2735 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002736 if (velocity_nics >= MAX_UNITS) {
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002737 dev_notice(&pdev->dev, "already found %d NICs.\n",
Jeff Garzike54f4892006-06-27 09:20:08 -04002738 velocity_nics);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002739 return -ENODEV;
2740 }
2741
2742 dev = alloc_etherdev(sizeof(struct velocity_info));
Jeff Garzike54f4892006-06-27 09:20:08 -04002743 if (!dev) {
Jeff Garzik9b91cf92006-06-27 11:39:50 -04002744 dev_err(&pdev->dev, "allocate net device failed.\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07002745 goto out;
2746 }
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002747
Linus Torvalds1da177e2005-04-16 15:20:36 -07002748 /* Chain it all together */
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002749
Linus Torvalds1da177e2005-04-16 15:20:36 -07002750 SET_NETDEV_DEV(dev, &pdev->dev);
Jeff Garzik8ab6f3f2006-06-27 08:56:23 -04002751 vptr = netdev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002752
2753
2754 if (first) {
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002755 printk(KERN_INFO "%s Ver. %s\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -07002756 VELOCITY_FULL_DRV_NAM, VELOCITY_VERSION);
2757 printk(KERN_INFO "Copyright (c) 2002, 2003 VIA Networking Technologies, Inc.\n");
2758 printk(KERN_INFO "Copyright (c) 2004 Red Hat Inc.\n");
2759 first = 0;
2760 }
2761
2762 velocity_init_info(pdev, vptr, info);
2763
2764 vptr->dev = dev;
2765
2766 dev->irq = pdev->irq;
2767
2768 ret = pci_enable_device(pdev);
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002769 if (ret < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002770 goto err_free_dev;
2771
2772 ret = velocity_get_pci_info(vptr, pdev);
2773 if (ret < 0) {
Jeff Garzike54f4892006-06-27 09:20:08 -04002774 /* error message already printed */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002775 goto err_disable;
2776 }
2777
2778 ret = pci_request_regions(pdev, VELOCITY_NAME);
2779 if (ret < 0) {
Jeff Garzik9b91cf92006-06-27 11:39:50 -04002780 dev_err(&pdev->dev, "No PCI resources.\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07002781 goto err_disable;
2782 }
2783
Jeff Garzikcabb7662006-06-27 09:25:28 -04002784 regs = ioremap(vptr->memaddr, VELOCITY_IO_SIZE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002785 if (regs == NULL) {
2786 ret = -EIO;
2787 goto err_release_res;
2788 }
2789
2790 vptr->mac_regs = regs;
2791
2792 mac_wol_reset(regs);
2793
2794 dev->base_addr = vptr->ioaddr;
2795
2796 for (i = 0; i < 6; i++)
2797 dev->dev_addr[i] = readb(&regs->PAR[i]);
2798
2799
Sven Hartge07b5f6a2008-10-23 13:03:44 +00002800 drv_string = dev_driver_string(&pdev->dev);
2801
2802 velocity_get_options(&vptr->options, velocity_nics, drv_string);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002803
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002804 /*
Linus Torvalds1da177e2005-04-16 15:20:36 -07002805 * Mask out the options cannot be set to the chip
2806 */
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002807
Linus Torvalds1da177e2005-04-16 15:20:36 -07002808 vptr->options.flags &= info->flags;
2809
2810 /*
2811 * Enable the chip specified capbilities
2812 */
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002813
Linus Torvalds1da177e2005-04-16 15:20:36 -07002814 vptr->flags = vptr->options.flags | (info->flags & 0xFF000000UL);
2815
2816 vptr->wol_opts = vptr->options.wol_opts;
2817 vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
2818
2819 vptr->phy_id = MII_GET_PHY_ID(vptr->mac_regs);
2820
2821 dev->irq = pdev->irq;
Stephen Hemminger39a11bd2008-11-19 22:19:33 -08002822 dev->netdev_ops = &velocity_netdev_ops;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002823 dev->ethtool_ops = &velocity_ethtool_ops;
Simon Kagstromdfff7142009-11-25 22:10:26 +00002824 netif_napi_add(dev, &vptr->napi, velocity_poll, VELOCITY_NAPI_WEIGHT);
Stephen Hemminger501e4d22007-08-24 13:56:49 -07002825
Francois Romieud4f73c82008-04-24 23:32:33 +02002826 dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER |
Simon Kagstromb6ca4302010-02-11 05:39:55 +00002827 NETIF_F_HW_VLAN_RX | NETIF_F_IP_CSUM | NETIF_F_SG;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002828
2829 ret = register_netdev(dev);
2830 if (ret < 0)
2831 goto err_iounmap;
2832
Séguier Régisd3b238a2009-06-16 11:25:49 +00002833 if (!velocity_get_link(dev)) {
Francois Romieu8a22ddd2006-06-23 00:47:06 +02002834 netif_carrier_off(dev);
Séguier Régisd3b238a2009-06-16 11:25:49 +00002835 vptr->mii_status |= VELOCITY_LINK_FAIL;
2836 }
Francois Romieu8a22ddd2006-06-23 00:47:06 +02002837
Linus Torvalds1da177e2005-04-16 15:20:36 -07002838 velocity_print_info(vptr);
2839 pci_set_drvdata(pdev, dev);
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002840
Linus Torvalds1da177e2005-04-16 15:20:36 -07002841 /* and leave the chip powered down */
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002842
Linus Torvalds1da177e2005-04-16 15:20:36 -07002843 pci_set_power_state(pdev, PCI_D3hot);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002844 velocity_nics++;
2845out:
2846 return ret;
2847
2848err_iounmap:
2849 iounmap(regs);
2850err_release_res:
2851 pci_release_regions(pdev);
2852err_disable:
2853 pci_disable_device(pdev);
2854err_free_dev:
2855 free_netdev(dev);
2856 goto out;
2857}
2858
Dave Jones2cf71d22009-07-23 18:11:12 -07002859
2860#ifdef CONFIG_PM
Linus Torvalds1da177e2005-04-16 15:20:36 -07002861/**
Dave Jones2cf71d22009-07-23 18:11:12 -07002862 * wol_calc_crc - WOL CRC
2863 * @pattern: data pattern
2864 * @mask_pattern: mask
Linus Torvalds1da177e2005-04-16 15:20:36 -07002865 *
Dave Jones2cf71d22009-07-23 18:11:12 -07002866 * Compute the wake on lan crc hashes for the packet header
2867 * we are interested in.
Linus Torvalds1da177e2005-04-16 15:20:36 -07002868 */
Dave Jones2cf71d22009-07-23 18:11:12 -07002869static u16 wol_calc_crc(int size, u8 *pattern, u8 *mask_pattern)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002870{
Dave Jones2cf71d22009-07-23 18:11:12 -07002871 u16 crc = 0xFFFF;
2872 u8 mask;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002873 int i, j;
2874
Dave Jones2cf71d22009-07-23 18:11:12 -07002875 for (i = 0; i < size; i++) {
2876 mask = mask_pattern[i];
2877
2878 /* Skip this loop if the mask equals to zero */
2879 if (mask == 0x00)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002880 continue;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002881
Dave Jones2cf71d22009-07-23 18:11:12 -07002882 for (j = 0; j < 8; j++) {
2883 if ((mask & 0x01) == 0) {
2884 mask >>= 1;
2885 continue;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002886 }
Dave Jones2cf71d22009-07-23 18:11:12 -07002887 mask >>= 1;
2888 crc = crc_ccitt(crc, &(pattern[i * 8 + j]), 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002889 }
2890 }
Dave Jones2cf71d22009-07-23 18:11:12 -07002891 /* Finally, invert the result once to get the correct data */
2892 crc = ~crc;
2893 return bitrev32(crc) >> 16;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002894}
2895
2896/**
Dave Jones2cf71d22009-07-23 18:11:12 -07002897 * velocity_set_wol - set up for wake on lan
2898 * @vptr: velocity to set WOL status on
Linus Torvalds1da177e2005-04-16 15:20:36 -07002899 *
Dave Jones2cf71d22009-07-23 18:11:12 -07002900 * Set a card up for wake on lan either by unicast or by
2901 * ARP packet.
2902 *
2903 * FIXME: check static buffer is safe here
Linus Torvalds1da177e2005-04-16 15:20:36 -07002904 */
Dave Jones2cf71d22009-07-23 18:11:12 -07002905static int velocity_set_wol(struct velocity_info *vptr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002906{
Dave Jonesc4067402009-07-20 17:35:21 +00002907 struct mac_regs __iomem *regs = vptr->mac_regs;
Dave Jones2cf71d22009-07-23 18:11:12 -07002908 static u8 buf[256];
2909 int i;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002910
Dave Jones2cf71d22009-07-23 18:11:12 -07002911 static u32 mask_pattern[2][4] = {
2912 {0x00203000, 0x000003C0, 0x00000000, 0x0000000}, /* ARP */
2913 {0xfffff000, 0xffffffff, 0xffffffff, 0x000ffff} /* Magic Packet */
2914 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002915
Dave Jones2cf71d22009-07-23 18:11:12 -07002916 writew(0xFFFF, &regs->WOLCRClr);
2917 writeb(WOLCFG_SAB | WOLCFG_SAM, &regs->WOLCFGSet);
2918 writew(WOLCR_MAGIC_EN, &regs->WOLCRSet);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002919
Dave Jones2cf71d22009-07-23 18:11:12 -07002920 /*
2921 if (vptr->wol_opts & VELOCITY_WOL_PHY)
2922 writew((WOLCR_LINKON_EN|WOLCR_LINKOFF_EN), &regs->WOLCRSet);
2923 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002924
Dave Jones2cf71d22009-07-23 18:11:12 -07002925 if (vptr->wol_opts & VELOCITY_WOL_UCAST)
2926 writew(WOLCR_UNICAST_EN, &regs->WOLCRSet);
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002927
Dave Jones2cf71d22009-07-23 18:11:12 -07002928 if (vptr->wol_opts & VELOCITY_WOL_ARP) {
2929 struct arp_packet *arp = (struct arp_packet *) buf;
2930 u16 crc;
2931 memset(buf, 0, sizeof(struct arp_packet) + 7);
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002932
Dave Jones2cf71d22009-07-23 18:11:12 -07002933 for (i = 0; i < 4; i++)
2934 writel(mask_pattern[0][i], &regs->ByteMask[0][i]);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002935
Dave Jones2cf71d22009-07-23 18:11:12 -07002936 arp->type = htons(ETH_P_ARP);
2937 arp->ar_op = htons(1);
2938
2939 memcpy(arp->ar_tip, vptr->ip_addr, 4);
2940
2941 crc = wol_calc_crc((sizeof(struct arp_packet) + 7) / 8, buf,
2942 (u8 *) & mask_pattern[0][0]);
2943
2944 writew(crc, &regs->PatternCRC[0]);
2945 writew(WOLCR_ARP_EN, &regs->WOLCRSet);
2946 }
2947
2948 BYTE_REG_BITS_ON(PWCFG_WOLTYPE, &regs->PWCFGSet);
2949 BYTE_REG_BITS_ON(PWCFG_LEGACY_WOLEN, &regs->PWCFGSet);
2950
2951 writew(0x0FFF, &regs->WOLSRClr);
2952
2953 if (vptr->mii_status & VELOCITY_AUTONEG_ENABLE) {
2954 if (PHYID_GET_PHY_ID(vptr->phy_id) == PHYID_CICADA_CS8201)
Francois Romieu3a7f8682010-04-06 14:24:53 -07002955 MII_REG_BITS_ON(AUXCR_MDPPS, MII_NCONFIG, vptr->mac_regs);
Dave Jones2cf71d22009-07-23 18:11:12 -07002956
Francois Romieu3a7f8682010-04-06 14:24:53 -07002957 MII_REG_BITS_OFF(ADVERTISE_1000FULL | ADVERTISE_1000HALF, MII_CTRL1000, vptr->mac_regs);
Dave Jones2cf71d22009-07-23 18:11:12 -07002958 }
2959
2960 if (vptr->mii_status & VELOCITY_SPEED_1000)
Francois Romieu3a7f8682010-04-06 14:24:53 -07002961 MII_REG_BITS_ON(BMCR_ANRESTART, MII_BMCR, vptr->mac_regs);
Dave Jones2cf71d22009-07-23 18:11:12 -07002962
2963 BYTE_REG_BITS_ON(CHIPGCR_FCMODE, &regs->CHIPGCR);
2964
2965 {
2966 u8 GCR;
2967 GCR = readb(&regs->CHIPGCR);
2968 GCR = (GCR & ~CHIPGCR_FCGMII) | CHIPGCR_FCFDX;
2969 writeb(GCR, &regs->CHIPGCR);
2970 }
2971
2972 BYTE_REG_BITS_OFF(ISR_PWEI, &regs->ISR);
2973 /* Turn on SWPTAG just before entering power mode */
2974 BYTE_REG_BITS_ON(STICKHW_SWPTAG, &regs->STICKHW);
2975 /* Go to bed ..... */
2976 BYTE_REG_BITS_ON((STICKHW_DS1 | STICKHW_DS0), &regs->STICKHW);
2977
Linus Torvalds1da177e2005-04-16 15:20:36 -07002978 return 0;
2979}
2980
2981/**
Dave Jones2cf71d22009-07-23 18:11:12 -07002982 * velocity_save_context - save registers
2983 * @vptr: velocity
2984 * @context: buffer for stored context
Linus Torvalds1da177e2005-04-16 15:20:36 -07002985 *
Dave Jones2cf71d22009-07-23 18:11:12 -07002986 * Retrieve the current configuration from the velocity hardware
2987 * and stash it in the context structure, for use by the context
2988 * restore functions. This allows us to save things we need across
2989 * power down states
Linus Torvalds1da177e2005-04-16 15:20:36 -07002990 */
Dave Jones2cf71d22009-07-23 18:11:12 -07002991static void velocity_save_context(struct velocity_info *vptr, struct velocity_context *context)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002992{
Dave Jones2cf71d22009-07-23 18:11:12 -07002993 struct mac_regs __iomem *regs = vptr->mac_regs;
2994 u16 i;
2995 u8 __iomem *ptr = (u8 __iomem *)regs;
2996
2997 for (i = MAC_REG_PAR; i < MAC_REG_CR0_CLR; i += 4)
2998 *((u32 *) (context->mac_reg + i)) = readl(ptr + i);
2999
3000 for (i = MAC_REG_MAR; i < MAC_REG_TDCSR_CLR; i += 4)
3001 *((u32 *) (context->mac_reg + i)) = readl(ptr + i);
3002
3003 for (i = MAC_REG_RDBASE_LO; i < MAC_REG_FIFO_TEST0; i += 4)
3004 *((u32 *) (context->mac_reg + i)) = readl(ptr + i);
3005
3006}
3007
3008static int velocity_suspend(struct pci_dev *pdev, pm_message_t state)
3009{
3010 struct net_device *dev = pci_get_drvdata(pdev);
Jeff Garzik8ab6f3f2006-06-27 08:56:23 -04003011 struct velocity_info *vptr = netdev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003012 unsigned long flags;
Francois Romieu580a6902008-07-11 00:03:44 +02003013
Dave Jones2cf71d22009-07-23 18:11:12 -07003014 if (!netif_running(vptr->dev))
3015 return 0;
Francois Romieu580a6902008-07-11 00:03:44 +02003016
Dave Jones2cf71d22009-07-23 18:11:12 -07003017 netif_device_detach(vptr->dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003018
3019 spin_lock_irqsave(&vptr->lock, flags);
Dave Jones2cf71d22009-07-23 18:11:12 -07003020 pci_save_state(pdev);
3021#ifdef ETHTOOL_GWOL
3022 if (vptr->flags & VELOCITY_FLAGS_WOL_ENABLED) {
3023 velocity_get_ip(vptr);
3024 velocity_save_context(vptr, &vptr->context);
3025 velocity_shutdown(vptr);
3026 velocity_set_wol(vptr);
3027 pci_enable_wake(pdev, PCI_D3hot, 1);
3028 pci_set_power_state(pdev, PCI_D3hot);
3029 } else {
3030 velocity_save_context(vptr, &vptr->context);
3031 velocity_shutdown(vptr);
3032 pci_disable_device(pdev);
3033 pci_set_power_state(pdev, pci_choose_state(pdev, state));
Linus Torvalds1da177e2005-04-16 15:20:36 -07003034 }
Dave Jones2cf71d22009-07-23 18:11:12 -07003035#else
3036 pci_set_power_state(pdev, pci_choose_state(pdev, state));
3037#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07003038 spin_unlock_irqrestore(&vptr->lock, flags);
Dave Jones2cf71d22009-07-23 18:11:12 -07003039 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003040}
3041
3042/**
Dave Jones2cf71d22009-07-23 18:11:12 -07003043 * velocity_restore_context - restore registers
3044 * @vptr: velocity
3045 * @context: buffer for stored context
Linus Torvalds1da177e2005-04-16 15:20:36 -07003046 *
Dave Jones2cf71d22009-07-23 18:11:12 -07003047 * Reload the register configuration from the velocity context
3048 * created by velocity_save_context.
Linus Torvalds1da177e2005-04-16 15:20:36 -07003049 */
Dave Jones2cf71d22009-07-23 18:11:12 -07003050static void velocity_restore_context(struct velocity_info *vptr, struct velocity_context *context)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003051{
Dave Jones2cf71d22009-07-23 18:11:12 -07003052 struct mac_regs __iomem *regs = vptr->mac_regs;
3053 int i;
3054 u8 __iomem *ptr = (u8 __iomem *)regs;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003055
Dave Jones2cf71d22009-07-23 18:11:12 -07003056 for (i = MAC_REG_PAR; i < MAC_REG_CR0_SET; i += 4)
3057 writel(*((u32 *) (context->mac_reg + i)), ptr + i);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003058
Dave Jones2cf71d22009-07-23 18:11:12 -07003059 /* Just skip cr0 */
3060 for (i = MAC_REG_CR1_SET; i < MAC_REG_CR0_CLR; i++) {
3061 /* Clear */
3062 writeb(~(*((u8 *) (context->mac_reg + i))), ptr + i + 4);
3063 /* Set */
3064 writeb(*((u8 *) (context->mac_reg + i)), ptr + i);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003065 }
3066
Dave Jones2cf71d22009-07-23 18:11:12 -07003067 for (i = MAC_REG_MAR; i < MAC_REG_IMR; i += 4)
3068 writel(*((u32 *) (context->mac_reg + i)), ptr + i);
3069
3070 for (i = MAC_REG_RDBASE_LO; i < MAC_REG_FIFO_TEST0; i += 4)
3071 writel(*((u32 *) (context->mac_reg + i)), ptr + i);
3072
3073 for (i = MAC_REG_TDCSR_SET; i <= MAC_REG_RDCSR_SET; i++)
3074 writeb(*((u8 *) (context->mac_reg + i)), ptr + i);
3075}
3076
3077static int velocity_resume(struct pci_dev *pdev)
3078{
3079 struct net_device *dev = pci_get_drvdata(pdev);
3080 struct velocity_info *vptr = netdev_priv(dev);
3081 unsigned long flags;
3082 int i;
3083
3084 if (!netif_running(vptr->dev))
3085 return 0;
3086
3087 pci_set_power_state(pdev, PCI_D0);
3088 pci_enable_wake(pdev, 0, 0);
3089 pci_restore_state(pdev);
3090
3091 mac_wol_reset(vptr->mac_regs);
3092
3093 spin_lock_irqsave(&vptr->lock, flags);
3094 velocity_restore_context(vptr, &vptr->context);
3095 velocity_init_registers(vptr, VELOCITY_INIT_WOL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003096 mac_disable_int(vptr->mac_regs);
3097
Simon Kagstromd6cade02010-02-09 23:37:54 +00003098 velocity_tx_srv(vptr);
Jeff Garzik6aa20a22006-09-13 13:24:59 -04003099
Dave Jones2cf71d22009-07-23 18:11:12 -07003100 for (i = 0; i < vptr->tx.numq; i++) {
3101 if (vptr->tx.used[i])
3102 mac_tx_queue_wake(vptr->mac_regs, i);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003103 }
Dave Jones2cf71d22009-07-23 18:11:12 -07003104
Linus Torvalds1da177e2005-04-16 15:20:36 -07003105 mac_enable_int(vptr->mac_regs);
Dave Jones2cf71d22009-07-23 18:11:12 -07003106 spin_unlock_irqrestore(&vptr->lock, flags);
3107 netif_device_attach(vptr->dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003108
Dave Jones2cf71d22009-07-23 18:11:12 -07003109 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003110}
Dave Jones2cf71d22009-07-23 18:11:12 -07003111#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07003112
3113/*
3114 * Definition for our device driver. The PCI layer interface
3115 * uses this to handle all our card discover and plugging
3116 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07003117static struct pci_driver velocity_driver = {
3118 .name = VELOCITY_NAME,
3119 .id_table = velocity_id_table,
3120 .probe = velocity_found1,
3121 .remove = __devexit_p(velocity_remove1),
3122#ifdef CONFIG_PM
3123 .suspend = velocity_suspend,
3124 .resume = velocity_resume,
3125#endif
3126};
3127
Linus Torvalds1da177e2005-04-16 15:20:36 -07003128
3129/**
3130 * velocity_ethtool_up - pre hook for ethtool
3131 * @dev: network device
3132 *
3133 * Called before an ethtool operation. We need to make sure the
3134 * chip is out of D3 state before we poke at it.
3135 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07003136static int velocity_ethtool_up(struct net_device *dev)
3137{
Jeff Garzik8ab6f3f2006-06-27 08:56:23 -04003138 struct velocity_info *vptr = netdev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003139 if (!netif_running(dev))
3140 pci_set_power_state(vptr->pdev, PCI_D0);
3141 return 0;
Jeff Garzik6aa20a22006-09-13 13:24:59 -04003142}
Linus Torvalds1da177e2005-04-16 15:20:36 -07003143
3144/**
3145 * velocity_ethtool_down - post hook for ethtool
3146 * @dev: network device
3147 *
3148 * Called after an ethtool operation. Restore the chip back to D3
3149 * state if it isn't running.
3150 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07003151static void velocity_ethtool_down(struct net_device *dev)
3152{
Jeff Garzik8ab6f3f2006-06-27 08:56:23 -04003153 struct velocity_info *vptr = netdev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003154 if (!netif_running(dev))
3155 pci_set_power_state(vptr->pdev, PCI_D3hot);
3156}
3157
3158static int velocity_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
3159{
Jeff Garzik8ab6f3f2006-06-27 08:56:23 -04003160 struct velocity_info *vptr = netdev_priv(dev);
Dave Jonesc4067402009-07-20 17:35:21 +00003161 struct mac_regs __iomem *regs = vptr->mac_regs;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003162 u32 status;
3163 status = check_connection_type(vptr->mac_regs);
3164
Jay Cliburn59b693f2006-07-20 23:23:57 +02003165 cmd->supported = SUPPORTED_TP |
3166 SUPPORTED_Autoneg |
3167 SUPPORTED_10baseT_Half |
3168 SUPPORTED_10baseT_Full |
3169 SUPPORTED_100baseT_Half |
3170 SUPPORTED_100baseT_Full |
3171 SUPPORTED_1000baseT_Half |
3172 SUPPORTED_1000baseT_Full;
3173 if (status & VELOCITY_SPEED_1000)
3174 cmd->speed = SPEED_1000;
3175 else if (status & VELOCITY_SPEED_100)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003176 cmd->speed = SPEED_100;
3177 else
3178 cmd->speed = SPEED_10;
3179 cmd->autoneg = (status & VELOCITY_AUTONEG_ENABLE) ? AUTONEG_ENABLE : AUTONEG_DISABLE;
3180 cmd->port = PORT_TP;
3181 cmd->transceiver = XCVR_INTERNAL;
3182 cmd->phy_address = readb(&regs->MIIADR) & 0x1F;
3183
3184 if (status & VELOCITY_DUPLEX_FULL)
3185 cmd->duplex = DUPLEX_FULL;
3186 else
3187 cmd->duplex = DUPLEX_HALF;
Jeff Garzik6aa20a22006-09-13 13:24:59 -04003188
Linus Torvalds1da177e2005-04-16 15:20:36 -07003189 return 0;
3190}
3191
3192static int velocity_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
3193{
Jeff Garzik8ab6f3f2006-06-27 08:56:23 -04003194 struct velocity_info *vptr = netdev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003195 u32 curr_status;
3196 u32 new_status = 0;
3197 int ret = 0;
Jeff Garzik6aa20a22006-09-13 13:24:59 -04003198
Linus Torvalds1da177e2005-04-16 15:20:36 -07003199 curr_status = check_connection_type(vptr->mac_regs);
3200 curr_status &= (~VELOCITY_LINK_FAIL);
3201
3202 new_status |= ((cmd->autoneg) ? VELOCITY_AUTONEG_ENABLE : 0);
3203 new_status |= ((cmd->speed == SPEED_100) ? VELOCITY_SPEED_100 : 0);
3204 new_status |= ((cmd->speed == SPEED_10) ? VELOCITY_SPEED_10 : 0);
3205 new_status |= ((cmd->duplex == DUPLEX_FULL) ? VELOCITY_DUPLEX_FULL : 0);
3206
3207 if ((new_status & VELOCITY_AUTONEG_ENABLE) && (new_status != (curr_status | VELOCITY_AUTONEG_ENABLE)))
3208 ret = -EINVAL;
3209 else
3210 velocity_set_media_mode(vptr, new_status);
3211
3212 return ret;
3213}
3214
Linus Torvalds1da177e2005-04-16 15:20:36 -07003215static void velocity_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
3216{
Jeff Garzik8ab6f3f2006-06-27 08:56:23 -04003217 struct velocity_info *vptr = netdev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003218 strcpy(info->driver, VELOCITY_NAME);
3219 strcpy(info->version, VELOCITY_VERSION);
3220 strcpy(info->bus_info, pci_name(vptr->pdev));
3221}
3222
3223static void velocity_ethtool_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
3224{
Jeff Garzik8ab6f3f2006-06-27 08:56:23 -04003225 struct velocity_info *vptr = netdev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003226 wol->supported = WAKE_PHY | WAKE_MAGIC | WAKE_UCAST | WAKE_ARP;
3227 wol->wolopts |= WAKE_MAGIC;
3228 /*
3229 if (vptr->wol_opts & VELOCITY_WOL_PHY)
3230 wol.wolopts|=WAKE_PHY;
3231 */
3232 if (vptr->wol_opts & VELOCITY_WOL_UCAST)
3233 wol->wolopts |= WAKE_UCAST;
3234 if (vptr->wol_opts & VELOCITY_WOL_ARP)
3235 wol->wolopts |= WAKE_ARP;
3236 memcpy(&wol->sopass, vptr->wol_passwd, 6);
3237}
3238
3239static int velocity_ethtool_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
3240{
Jeff Garzik8ab6f3f2006-06-27 08:56:23 -04003241 struct velocity_info *vptr = netdev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003242
3243 if (!(wol->wolopts & (WAKE_PHY | WAKE_MAGIC | WAKE_UCAST | WAKE_ARP)))
3244 return -EFAULT;
3245 vptr->wol_opts = VELOCITY_WOL_MAGIC;
3246
3247 /*
3248 if (wol.wolopts & WAKE_PHY) {
3249 vptr->wol_opts|=VELOCITY_WOL_PHY;
3250 vptr->flags |=VELOCITY_FLAGS_WOL_ENABLED;
3251 }
3252 */
3253
3254 if (wol->wolopts & WAKE_MAGIC) {
3255 vptr->wol_opts |= VELOCITY_WOL_MAGIC;
3256 vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
3257 }
3258 if (wol->wolopts & WAKE_UCAST) {
3259 vptr->wol_opts |= VELOCITY_WOL_UCAST;
3260 vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
3261 }
3262 if (wol->wolopts & WAKE_ARP) {
3263 vptr->wol_opts |= VELOCITY_WOL_ARP;
3264 vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
3265 }
3266 memcpy(vptr->wol_passwd, wol->sopass, 6);
3267 return 0;
3268}
3269
3270static u32 velocity_get_msglevel(struct net_device *dev)
3271{
3272 return msglevel;
3273}
3274
3275static void velocity_set_msglevel(struct net_device *dev, u32 value)
3276{
3277 msglevel = value;
3278}
3279
Simon Kagstrom6dfc4b92009-11-25 22:10:12 +00003280static int get_pending_timer_val(int val)
3281{
3282 int mult_bits = val >> 6;
3283 int mult = 1;
3284
3285 switch (mult_bits)
3286 {
3287 case 1:
3288 mult = 4; break;
3289 case 2:
3290 mult = 16; break;
3291 case 3:
3292 mult = 64; break;
3293 case 0:
3294 default:
3295 break;
3296 }
3297
3298 return (val & 0x3f) * mult;
3299}
3300
3301static void set_pending_timer_val(int *val, u32 us)
3302{
3303 u8 mult = 0;
3304 u8 shift = 0;
3305
3306 if (us >= 0x3f) {
3307 mult = 1; /* mult with 4 */
3308 shift = 2;
3309 }
3310 if (us >= 0x3f * 4) {
3311 mult = 2; /* mult with 16 */
3312 shift = 4;
3313 }
3314 if (us >= 0x3f * 16) {
3315 mult = 3; /* mult with 64 */
3316 shift = 6;
3317 }
3318
3319 *val = (mult << 6) | ((us >> shift) & 0x3f);
3320}
3321
3322
3323static int velocity_get_coalesce(struct net_device *dev,
3324 struct ethtool_coalesce *ecmd)
3325{
3326 struct velocity_info *vptr = netdev_priv(dev);
3327
3328 ecmd->tx_max_coalesced_frames = vptr->options.tx_intsup;
3329 ecmd->rx_max_coalesced_frames = vptr->options.rx_intsup;
3330
3331 ecmd->rx_coalesce_usecs = get_pending_timer_val(vptr->options.rxqueue_timer);
3332 ecmd->tx_coalesce_usecs = get_pending_timer_val(vptr->options.txqueue_timer);
3333
3334 return 0;
3335}
3336
3337static int velocity_set_coalesce(struct net_device *dev,
3338 struct ethtool_coalesce *ecmd)
3339{
3340 struct velocity_info *vptr = netdev_priv(dev);
3341 int max_us = 0x3f * 64;
Simon Kagstrom39c2ff42010-02-09 23:38:07 +00003342 unsigned long flags;
Simon Kagstrom6dfc4b92009-11-25 22:10:12 +00003343
3344 /* 6 bits of */
3345 if (ecmd->tx_coalesce_usecs > max_us)
3346 return -EINVAL;
3347 if (ecmd->rx_coalesce_usecs > max_us)
3348 return -EINVAL;
3349
3350 if (ecmd->tx_max_coalesced_frames > 0xff)
3351 return -EINVAL;
3352 if (ecmd->rx_max_coalesced_frames > 0xff)
3353 return -EINVAL;
3354
3355 vptr->options.rx_intsup = ecmd->rx_max_coalesced_frames;
3356 vptr->options.tx_intsup = ecmd->tx_max_coalesced_frames;
3357
3358 set_pending_timer_val(&vptr->options.rxqueue_timer,
3359 ecmd->rx_coalesce_usecs);
3360 set_pending_timer_val(&vptr->options.txqueue_timer,
3361 ecmd->tx_coalesce_usecs);
3362
3363 /* Setup the interrupt suppression and queue timers */
Simon Kagstrom39c2ff42010-02-09 23:38:07 +00003364 spin_lock_irqsave(&vptr->lock, flags);
Simon Kagstrom6dfc4b92009-11-25 22:10:12 +00003365 mac_disable_int(vptr->mac_regs);
3366 setup_adaptive_interrupts(vptr);
3367 setup_queue_timers(vptr);
3368
3369 mac_write_int_mask(vptr->int_mask, vptr->mac_regs);
3370 mac_clear_isr(vptr->mac_regs);
3371 mac_enable_int(vptr->mac_regs);
Simon Kagstrom39c2ff42010-02-09 23:38:07 +00003372 spin_unlock_irqrestore(&vptr->lock, flags);
Simon Kagstrom6dfc4b92009-11-25 22:10:12 +00003373
3374 return 0;
3375}
3376
Jeff Garzik7282d492006-09-13 14:30:00 -04003377static const struct ethtool_ops velocity_ethtool_ops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -07003378 .get_settings = velocity_get_settings,
3379 .set_settings = velocity_set_settings,
3380 .get_drvinfo = velocity_get_drvinfo,
Simon Kagstromb06f78f2009-11-25 22:10:52 +00003381 .set_tx_csum = ethtool_op_set_tx_csum,
3382 .get_tx_csum = ethtool_op_get_tx_csum,
Linus Torvalds1da177e2005-04-16 15:20:36 -07003383 .get_wol = velocity_ethtool_get_wol,
3384 .set_wol = velocity_ethtool_set_wol,
3385 .get_msglevel = velocity_get_msglevel,
3386 .set_msglevel = velocity_set_msglevel,
Simon Kagstromc79992f2009-11-25 22:10:43 +00003387 .set_sg = ethtool_op_set_sg,
Linus Torvalds1da177e2005-04-16 15:20:36 -07003388 .get_link = velocity_get_link,
Simon Kagstrom6dfc4b92009-11-25 22:10:12 +00003389 .get_coalesce = velocity_get_coalesce,
3390 .set_coalesce = velocity_set_coalesce,
Linus Torvalds1da177e2005-04-16 15:20:36 -07003391 .begin = velocity_ethtool_up,
3392 .complete = velocity_ethtool_down
3393};
3394
Linus Torvalds1da177e2005-04-16 15:20:36 -07003395#ifdef CONFIG_PM
Randy Dunlapce9f7fe2006-12-18 21:21:10 -08003396#ifdef CONFIG_INET
Linus Torvalds1da177e2005-04-16 15:20:36 -07003397static int velocity_netdev_event(struct notifier_block *nb, unsigned long notification, void *ptr)
3398{
3399 struct in_ifaddr *ifa = (struct in_ifaddr *) ptr;
Denis V. Luneva3374992008-02-28 20:44:27 -08003400 struct net_device *dev = ifa->ifa_dev->dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003401
Ben Hutchings516b4df2009-10-28 04:01:46 -07003402 if (dev_net(dev) == &init_net &&
3403 dev->netdev_ops == &velocity_netdev_ops)
3404 velocity_get_ip(netdev_priv(dev));
Denis V. Luneva3374992008-02-28 20:44:27 -08003405
Linus Torvalds1da177e2005-04-16 15:20:36 -07003406 return NOTIFY_DONE;
3407}
Dave Jones2cf71d22009-07-23 18:11:12 -07003408#endif /* CONFIG_INET */
3409#endif /* CONFIG_PM */
Randy Dunlapce9f7fe2006-12-18 21:21:10 -08003410
Dave Jones2cf71d22009-07-23 18:11:12 -07003411#if defined(CONFIG_PM) && defined(CONFIG_INET)
3412static struct notifier_block velocity_inetaddr_notifier = {
3413 .notifier_call = velocity_netdev_event,
3414};
3415
3416static void velocity_register_notifier(void)
3417{
3418 register_inetaddr_notifier(&velocity_inetaddr_notifier);
3419}
3420
3421static void velocity_unregister_notifier(void)
3422{
3423 unregister_inetaddr_notifier(&velocity_inetaddr_notifier);
3424}
3425
3426#else
3427
3428#define velocity_register_notifier() do {} while (0)
3429#define velocity_unregister_notifier() do {} while (0)
3430
3431#endif /* defined(CONFIG_PM) && defined(CONFIG_INET) */
3432
3433/**
3434 * velocity_init_module - load time function
3435 *
3436 * Called when the velocity module is loaded. The PCI driver
3437 * is registered with the PCI layer, and in turn will call
3438 * the probe functions for each velocity adapter installed
3439 * in the system.
3440 */
3441static int __init velocity_init_module(void)
3442{
3443 int ret;
3444
3445 velocity_register_notifier();
3446 ret = pci_register_driver(&velocity_driver);
3447 if (ret < 0)
3448 velocity_unregister_notifier();
3449 return ret;
3450}
3451
3452/**
3453 * velocity_cleanup - module unload
3454 *
3455 * When the velocity hardware is unloaded this function is called.
3456 * It will clean up the notifiers and the unregister the PCI
3457 * driver interface for this hardware. This in turn cleans up
3458 * all discovered interfaces before returning from the function
3459 */
3460static void __exit velocity_cleanup_module(void)
3461{
3462 velocity_unregister_notifier();
3463 pci_unregister_driver(&velocity_driver);
3464}
3465
3466module_init(velocity_init_module);
3467module_exit(velocity_cleanup_module);