2 * This code is derived from the VIA reference driver (copyright message
3 * below) provided to Red Hat by VIA Networking Technologies, Inc. for
4 * addition to the Linux kernel.
6 * The code has been merged into one source file, cleaned up to follow
7 * Linux coding style, ported to the Linux 2.6 kernel tree and cleaned
8 * for 64bit hardware platforms.
11 * rx_copybreak/alignment
14 * The changes are (c) Copyright 2004, Red Hat Inc. <alan@lxorguk.ukuu.org.uk>
15 * Additional fixes and clean up: Francois Romieu
17 * This source has not been verified for use in safety critical systems.
19 * Please direct queries about the revamped driver to the linux-kernel
24 * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
25 * All rights reserved.
27 * This software may be redistributed and/or modified under
28 * the terms of the GNU General Public License as published by the Free
29 * Software Foundation; either version 2 of the License, or
32 * This program is distributed in the hope that it will be useful, but
33 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
34 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
37 * Author: Chuang Liang-Shing, AJ Jiang
41 * MODULE_LICENSE("GPL");
45 #include <linux/module.h>
46 #include <linux/types.h>
47 #include <linux/bitops.h>
48 #include <linux/init.h>
50 #include <linux/errno.h>
51 #include <linux/ioport.h>
52 #include <linux/pci.h>
53 #include <linux/kernel.h>
54 #include <linux/netdevice.h>
55 #include <linux/etherdevice.h>
56 #include <linux/skbuff.h>
57 #include <linux/delay.h>
58 #include <linux/timer.h>
59 #include <linux/slab.h>
60 #include <linux/interrupt.h>
61 #include <linux/string.h>
62 #include <linux/wait.h>
65 #include <linux/uaccess.h>
66 #include <linux/proc_fs.h>
67 #include <linux/inetdevice.h>
68 #include <linux/reboot.h>
69 #include <linux/ethtool.h>
70 #include <linux/mii.h>
72 #include <linux/if_arp.h>
73 #include <linux/if_vlan.h>
75 #include <linux/tcp.h>
76 #include <linux/udp.h>
77 #include <linux/crc-ccitt.h>
78 #include <linux/crc32.h>
80 #include "via-velocity.h"
83 static int velocity_nics;
84 static int msglevel = MSG_LEVEL_INFO;
87 * mac_get_cam_mask - Read a CAM mask
88 * @regs: register block for this velocity
89 * @mask: buffer to store mask
91 * Fetch the mask bits of the selected CAM and store them into the
92 * provided mask buffer.
94 static void mac_get_cam_mask(struct mac_regs __iomem *regs, u8 *mask)
99 BYTE_REG_BITS_SET(CAMCR_PS_CAM_MASK, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
101 writeb(0, ®s->CAMADDR);
104 for (i = 0; i < 8; i++)
105 *mask++ = readb(&(regs->MARCAM[i]));
108 writeb(0, ®s->CAMADDR);
111 BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
115 * mac_set_cam_mask - Set a CAM mask
116 * @regs: register block for this velocity
117 * @mask: CAM mask to load
119 * Store a new mask into a CAM
121 static void mac_set_cam_mask(struct mac_regs __iomem *regs, u8 *mask)
124 /* Select CAM mask */
125 BYTE_REG_BITS_SET(CAMCR_PS_CAM_MASK, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
127 writeb(CAMADDR_CAMEN, ®s->CAMADDR);
129 for (i = 0; i < 8; i++)
130 writeb(*mask++, &(regs->MARCAM[i]));
133 writeb(0, ®s->CAMADDR);
136 BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
139 static void mac_set_vlan_cam_mask(struct mac_regs __iomem *regs, u8 *mask)
142 /* Select CAM mask */
143 BYTE_REG_BITS_SET(CAMCR_PS_CAM_MASK, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
145 writeb(CAMADDR_CAMEN | CAMADDR_VCAMSL, ®s->CAMADDR);
147 for (i = 0; i < 8; i++)
148 writeb(*mask++, &(regs->MARCAM[i]));
151 writeb(0, ®s->CAMADDR);
154 BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
158 * mac_set_cam - set CAM data
159 * @regs: register block of this velocity
161 * @addr: 2 or 6 bytes of CAM data
163 * Load an address or vlan tag into a CAM
165 static void mac_set_cam(struct mac_regs __iomem *regs, int idx, const u8 *addr)
169 /* Select CAM mask */
170 BYTE_REG_BITS_SET(CAMCR_PS_CAM_DATA, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
174 writeb(CAMADDR_CAMEN | idx, ®s->CAMADDR);
176 for (i = 0; i < 6; i++)
177 writeb(*addr++, &(regs->MARCAM[i]));
179 BYTE_REG_BITS_ON(CAMCR_CAMWR, ®s->CAMCR);
183 writeb(0, ®s->CAMADDR);
186 BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
189 static void mac_set_vlan_cam(struct mac_regs __iomem *regs, int idx,
193 /* Select CAM mask */
194 BYTE_REG_BITS_SET(CAMCR_PS_CAM_DATA, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
198 writeb(CAMADDR_CAMEN | CAMADDR_VCAMSL | idx, ®s->CAMADDR);
199 writew(*((u16 *) addr), ®s->MARCAM[0]);
201 BYTE_REG_BITS_ON(CAMCR_CAMWR, ®s->CAMCR);
205 writeb(0, ®s->CAMADDR);
208 BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
213 * mac_wol_reset - reset WOL after exiting low power
214 * @regs: register block of this velocity
216 * Called after we drop out of wake on lan mode in order to
217 * reset the Wake on lan features. This function doesn't restore
218 * the rest of the logic from the result of sleep/wakeup
220 static void mac_wol_reset(struct mac_regs __iomem *regs)
223 /* Turn off SWPTAG right after leaving power mode */
224 BYTE_REG_BITS_OFF(STICKHW_SWPTAG, ®s->STICKHW);
225 /* clear sticky bits */
226 BYTE_REG_BITS_OFF((STICKHW_DS1 | STICKHW_DS0), ®s->STICKHW);
228 BYTE_REG_BITS_OFF(CHIPGCR_FCGMII, ®s->CHIPGCR);
229 BYTE_REG_BITS_OFF(CHIPGCR_FCMODE, ®s->CHIPGCR);
230 /* disable force PME-enable */
231 writeb(WOLCFG_PMEOVR, ®s->WOLCFGClr);
232 /* disable power-event config bit */
233 writew(0xFFFF, ®s->WOLCRClr);
234 /* clear power status */
235 writew(0xFFFF, ®s->WOLSRClr);
238 static const struct ethtool_ops velocity_ethtool_ops;
241 Define module options
244 MODULE_AUTHOR("VIA Networking Technologies, Inc.");
245 MODULE_LICENSE("GPL");
246 MODULE_DESCRIPTION("VIA Networking Velocity Family Gigabit Ethernet Adapter Driver");
248 #define VELOCITY_PARAM(N, D) \
249 static int N[MAX_UNITS] = OPTION_DEFAULT;\
250 module_param_array(N, int, NULL, 0); \
251 MODULE_PARM_DESC(N, D);
253 #define RX_DESC_MIN 64
254 #define RX_DESC_MAX 255
255 #define RX_DESC_DEF 64
256 VELOCITY_PARAM(RxDescriptors, "Number of receive descriptors");
258 #define TX_DESC_MIN 16
259 #define TX_DESC_MAX 256
260 #define TX_DESC_DEF 64
261 VELOCITY_PARAM(TxDescriptors, "Number of transmit descriptors");
263 #define RX_THRESH_MIN 0
264 #define RX_THRESH_MAX 3
265 #define RX_THRESH_DEF 0
266 /* rx_thresh[] is used for controlling the receive fifo threshold.
267 0: indicate the rxfifo threshold is 128 bytes.
268 1: indicate the rxfifo threshold is 512 bytes.
269 2: indicate the rxfifo threshold is 1024 bytes.
270 3: indicate the rxfifo threshold is store & forward.
272 VELOCITY_PARAM(rx_thresh, "Receive fifo threshold");
274 #define DMA_LENGTH_MIN 0
275 #define DMA_LENGTH_MAX 7
276 #define DMA_LENGTH_DEF 6
278 /* DMA_length[] is used for controlling the DMA length
285 6: SF(flush till emply)
286 7: SF(flush till emply)
288 VELOCITY_PARAM(DMA_length, "DMA length");
290 #define IP_ALIG_DEF 0
291 /* IP_byte_align[] is used for IP header DWORD byte aligned
292 0: indicate the IP header won't be DWORD byte aligned.(Default) .
293 1: indicate the IP header will be DWORD byte aligned.
294 In some environment, the IP header should be DWORD byte aligned,
295 or the packet will be droped when we receive it. (eg: IPVS)
297 VELOCITY_PARAM(IP_byte_align, "Enable IP header dword aligned");
299 #define FLOW_CNTL_DEF 1
300 #define FLOW_CNTL_MIN 1
301 #define FLOW_CNTL_MAX 5
303 /* flow_control[] is used for setting the flow control ability of NIC.
304 1: hardware deafult - AUTO (default). Use Hardware default value in ANAR.
305 2: enable TX flow control.
306 3: enable RX flow control.
307 4: enable RX/TX flow control.
310 VELOCITY_PARAM(flow_control, "Enable flow control ability");
312 #define MED_LNK_DEF 0
313 #define MED_LNK_MIN 0
314 #define MED_LNK_MAX 5
315 /* speed_duplex[] is used for setting the speed and duplex mode of NIC.
316 0: indicate autonegotiation for both speed and duplex mode
317 1: indicate 100Mbps half duplex mode
318 2: indicate 100Mbps full duplex mode
319 3: indicate 10Mbps half duplex mode
320 4: indicate 10Mbps full duplex mode
321 5: indicate 1000Mbps full duplex mode
324 if EEPROM have been set to the force mode, this option is ignored
327 VELOCITY_PARAM(speed_duplex, "Setting the speed and duplex mode");
329 #define VAL_PKT_LEN_DEF 0
330 /* ValPktLen[] is used for setting the checksum offload ability of NIC.
331 0: Receive frame with invalid layer 2 length (Default)
332 1: Drop frame with invalid layer 2 length
334 VELOCITY_PARAM(ValPktLen, "Receiving or Drop invalid 802.3 frame");
336 #define WOL_OPT_DEF 0
337 #define WOL_OPT_MIN 0
338 #define WOL_OPT_MAX 7
339 /* wol_opts[] is used for controlling wake on lan behavior.
340 0: Wake up if recevied a magic packet. (Default)
341 1: Wake up if link status is on/off.
342 2: Wake up if recevied an arp packet.
343 4: Wake up if recevied any unicast packet.
344 Those value can be sumed up to support more than one option.
346 VELOCITY_PARAM(wol_opts, "Wake On Lan options");
348 static int rx_copybreak = 200;
349 module_param(rx_copybreak, int, 0644);
350 MODULE_PARM_DESC(rx_copybreak, "Copy breakpoint for copy-only-tiny-frames");
353 * Internal board variants. At the moment we have only one
355 static struct velocity_info_tbl chip_info_table[] = {
356 {CHIP_TYPE_VT6110, "VIA Networking Velocity Family Gigabit Ethernet Adapter", 1, 0x00FFFFFFUL},
361 * Describe the PCI device identifiers that we support in this
362 * device driver. Used for hotplug autoloading.
364 static DEFINE_PCI_DEVICE_TABLE(velocity_id_table) = {
365 { PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_612X) },
369 MODULE_DEVICE_TABLE(pci, velocity_id_table);
372 * get_chip_name - identifier to name
373 * @id: chip identifier
375 * Given a chip identifier return a suitable description. Returns
376 * a pointer a static string valid while the driver is loaded.
378 static const char *get_chip_name(enum chip_type chip_id)
381 for (i = 0; chip_info_table[i].name != NULL; i++)
382 if (chip_info_table[i].chip_id == chip_id)
384 return chip_info_table[i].name;
388 * velocity_remove1 - device unplug
389 * @pdev: PCI device being removed
391 * Device unload callback. Called on an unplug or on module
392 * unload for each active device that is present. Disconnects
393 * the device from the network layer and frees all the resources
395 static void velocity_remove1(struct pci_dev *pdev)
397 struct net_device *dev = pci_get_drvdata(pdev);
398 struct velocity_info *vptr = netdev_priv(dev);
400 unregister_netdev(dev);
401 iounmap(vptr->mac_regs);
402 pci_release_regions(pdev);
403 pci_disable_device(pdev);
404 pci_set_drvdata(pdev, NULL);
411 * velocity_set_int_opt - parser for integer options
412 * @opt: pointer to option value
413 * @val: value the user requested (or -1 for default)
414 * @min: lowest value allowed
415 * @max: highest value allowed
416 * @def: default value
417 * @name: property name
420 * Set an integer property in the module options. This function does
421 * all the verification and checking as well as reporting so that
422 * we don't duplicate code for each option.
424 static void velocity_set_int_opt(int *opt, int val, int min, int max, int def,
425 char *name, const char *devname)
429 else if (val < min || val > max) {
430 VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: the value of parameter %s is invalid, the valid range is (%d-%d)\n",
431 devname, name, min, max);
434 VELOCITY_PRT(MSG_LEVEL_INFO, KERN_INFO "%s: set value of parameter %s to %d\n",
441 * velocity_set_bool_opt - parser for boolean options
442 * @opt: pointer to option value
443 * @val: value the user requested (or -1 for default)
444 * @def: default value (yes/no)
445 * @flag: numeric value to set for true.
446 * @name: property name
449 * Set a boolean property in the module options. This function does
450 * all the verification and checking as well as reporting so that
451 * we don't duplicate code for each option.
453 static void velocity_set_bool_opt(u32 *opt, int val, int def, u32 flag,
454 char *name, const char *devname)
458 *opt |= (def ? flag : 0);
459 else if (val < 0 || val > 1) {
460 printk(KERN_NOTICE "%s: the value of parameter %s is invalid, the valid range is (0-1)\n",
462 *opt |= (def ? flag : 0);
464 printk(KERN_INFO "%s: set parameter %s to %s\n",
465 devname, name, val ? "TRUE" : "FALSE");
466 *opt |= (val ? flag : 0);
471 * velocity_get_options - set options on device
472 * @opts: option structure for the device
473 * @index: index of option to use in module options array
474 * @devname: device name
476 * Turn the module and command options into a single structure
477 * for the current device
479 static void velocity_get_options(struct velocity_opt *opts, int index,
483 velocity_set_int_opt(&opts->rx_thresh, rx_thresh[index], RX_THRESH_MIN, RX_THRESH_MAX, RX_THRESH_DEF, "rx_thresh", devname);
484 velocity_set_int_opt(&opts->DMA_length, DMA_length[index], DMA_LENGTH_MIN, DMA_LENGTH_MAX, DMA_LENGTH_DEF, "DMA_length", devname);
485 velocity_set_int_opt(&opts->numrx, RxDescriptors[index], RX_DESC_MIN, RX_DESC_MAX, RX_DESC_DEF, "RxDescriptors", devname);
486 velocity_set_int_opt(&opts->numtx, TxDescriptors[index], TX_DESC_MIN, TX_DESC_MAX, TX_DESC_DEF, "TxDescriptors", devname);
488 velocity_set_int_opt(&opts->flow_cntl, flow_control[index], FLOW_CNTL_MIN, FLOW_CNTL_MAX, FLOW_CNTL_DEF, "flow_control", devname);
489 velocity_set_bool_opt(&opts->flags, IP_byte_align[index], IP_ALIG_DEF, VELOCITY_FLAGS_IP_ALIGN, "IP_byte_align", devname);
490 velocity_set_bool_opt(&opts->flags, ValPktLen[index], VAL_PKT_LEN_DEF, VELOCITY_FLAGS_VAL_PKT_LEN, "ValPktLen", devname);
491 velocity_set_int_opt((int *) &opts->spd_dpx, speed_duplex[index], MED_LNK_MIN, MED_LNK_MAX, MED_LNK_DEF, "Media link mode", devname);
492 velocity_set_int_opt(&opts->wol_opts, wol_opts[index], WOL_OPT_MIN, WOL_OPT_MAX, WOL_OPT_DEF, "Wake On Lan options", devname);
493 opts->numrx = (opts->numrx & ~3);
497 * velocity_init_cam_filter - initialise CAM
498 * @vptr: velocity to program
500 * Initialize the content addressable memory used for filters. Load
501 * appropriately according to the presence of VLAN
503 static void velocity_init_cam_filter(struct velocity_info *vptr)
505 struct mac_regs __iomem *regs = vptr->mac_regs;
506 unsigned int vid, i = 0;
508 /* Turn on MCFG_PQEN, turn off MCFG_RTGOPT */
509 WORD_REG_BITS_SET(MCFG_PQEN, MCFG_RTGOPT, ®s->MCFG);
510 WORD_REG_BITS_ON(MCFG_VIDFR, ®s->MCFG);
512 /* Disable all CAMs */
513 memset(vptr->vCAMmask, 0, sizeof(u8) * 8);
514 memset(vptr->mCAMmask, 0, sizeof(u8) * 8);
515 mac_set_vlan_cam_mask(regs, vptr->vCAMmask);
516 mac_set_cam_mask(regs, vptr->mCAMmask);
519 for_each_set_bit(vid, vptr->active_vlans, VLAN_N_VID) {
520 mac_set_vlan_cam(regs, i, (u8 *) &vid);
521 vptr->vCAMmask[i / 8] |= 0x1 << (i % 8);
522 if (++i >= VCAM_SIZE)
525 mac_set_vlan_cam_mask(regs, vptr->vCAMmask);
528 static int velocity_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
530 struct velocity_info *vptr = netdev_priv(dev);
532 spin_lock_irq(&vptr->lock);
533 set_bit(vid, vptr->active_vlans);
534 velocity_init_cam_filter(vptr);
535 spin_unlock_irq(&vptr->lock);
539 static int velocity_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
541 struct velocity_info *vptr = netdev_priv(dev);
543 spin_lock_irq(&vptr->lock);
544 clear_bit(vid, vptr->active_vlans);
545 velocity_init_cam_filter(vptr);
546 spin_unlock_irq(&vptr->lock);
550 static void velocity_init_rx_ring_indexes(struct velocity_info *vptr)
552 vptr->rx.dirty = vptr->rx.filled = vptr->rx.curr = 0;
556 * velocity_rx_reset - handle a receive reset
557 * @vptr: velocity we are resetting
559 * Reset the ownership and status for the receive ring side.
560 * Hand all the receive queue to the NIC.
562 static void velocity_rx_reset(struct velocity_info *vptr)
565 struct mac_regs __iomem *regs = vptr->mac_regs;
568 velocity_init_rx_ring_indexes(vptr);
571 * Init state, all RD entries belong to the NIC
573 for (i = 0; i < vptr->options.numrx; ++i)
574 vptr->rx.ring[i].rdesc0.len |= OWNED_BY_NIC;
576 writew(vptr->options.numrx, ®s->RBRDU);
577 writel(vptr->rx.pool_dma, ®s->RDBaseLo);
578 writew(0, ®s->RDIdx);
579 writew(vptr->options.numrx - 1, ®s->RDCSize);
583 * velocity_get_opt_media_mode - get media selection
584 * @vptr: velocity adapter
586 * Get the media mode stored in EEPROM or module options and load
587 * mii_status accordingly. The requested link state information
590 static u32 velocity_get_opt_media_mode(struct velocity_info *vptr)
594 switch (vptr->options.spd_dpx) {
596 status = VELOCITY_AUTONEG_ENABLE;
598 case SPD_DPX_100_FULL:
599 status = VELOCITY_SPEED_100 | VELOCITY_DUPLEX_FULL;
601 case SPD_DPX_10_FULL:
602 status = VELOCITY_SPEED_10 | VELOCITY_DUPLEX_FULL;
604 case SPD_DPX_100_HALF:
605 status = VELOCITY_SPEED_100;
607 case SPD_DPX_10_HALF:
608 status = VELOCITY_SPEED_10;
610 case SPD_DPX_1000_FULL:
611 status = VELOCITY_SPEED_1000 | VELOCITY_DUPLEX_FULL;
614 vptr->mii_status = status;
619 * safe_disable_mii_autopoll - autopoll off
620 * @regs: velocity registers
622 * Turn off the autopoll and wait for it to disable on the chip
624 static void safe_disable_mii_autopoll(struct mac_regs __iomem *regs)
629 writeb(0, ®s->MIICR);
630 for (ww = 0; ww < W_MAX_TIMEOUT; ww++) {
632 if (BYTE_REG_BITS_IS_ON(MIISR_MIDLE, ®s->MIISR))
638 * enable_mii_autopoll - turn on autopolling
639 * @regs: velocity registers
641 * Enable the MII link status autopoll feature on the Velocity
642 * hardware. Wait for it to enable.
644 static void enable_mii_autopoll(struct mac_regs __iomem *regs)
648 writeb(0, &(regs->MIICR));
649 writeb(MIIADR_SWMPL, ®s->MIIADR);
651 for (ii = 0; ii < W_MAX_TIMEOUT; ii++) {
653 if (BYTE_REG_BITS_IS_ON(MIISR_MIDLE, ®s->MIISR))
657 writeb(MIICR_MAUTO, ®s->MIICR);
659 for (ii = 0; ii < W_MAX_TIMEOUT; ii++) {
661 if (!BYTE_REG_BITS_IS_ON(MIISR_MIDLE, ®s->MIISR))
668 * velocity_mii_read - read MII data
669 * @regs: velocity registers
670 * @index: MII register index
671 * @data: buffer for received data
673 * Perform a single read of an MII 16bit register. Returns zero
674 * on success or -ETIMEDOUT if the PHY did not respond.
676 static int velocity_mii_read(struct mac_regs __iomem *regs, u8 index, u16 *data)
681 * Disable MIICR_MAUTO, so that mii addr can be set normally
683 safe_disable_mii_autopoll(regs);
685 writeb(index, ®s->MIIADR);
687 BYTE_REG_BITS_ON(MIICR_RCMD, ®s->MIICR);
689 for (ww = 0; ww < W_MAX_TIMEOUT; ww++) {
690 if (!(readb(®s->MIICR) & MIICR_RCMD))
694 *data = readw(®s->MIIDATA);
696 enable_mii_autopoll(regs);
697 if (ww == W_MAX_TIMEOUT)
703 * mii_check_media_mode - check media state
704 * @regs: velocity registers
706 * Check the current MII status and determine the link status
709 static u32 mii_check_media_mode(struct mac_regs __iomem *regs)
714 if (!MII_REG_BITS_IS_ON(BMSR_LSTATUS, MII_BMSR, regs))
715 status |= VELOCITY_LINK_FAIL;
717 if (MII_REG_BITS_IS_ON(ADVERTISE_1000FULL, MII_CTRL1000, regs))
718 status |= VELOCITY_SPEED_1000 | VELOCITY_DUPLEX_FULL;
719 else if (MII_REG_BITS_IS_ON(ADVERTISE_1000HALF, MII_CTRL1000, regs))
720 status |= (VELOCITY_SPEED_1000);
722 velocity_mii_read(regs, MII_ADVERTISE, &ANAR);
723 if (ANAR & ADVERTISE_100FULL)
724 status |= (VELOCITY_SPEED_100 | VELOCITY_DUPLEX_FULL);
725 else if (ANAR & ADVERTISE_100HALF)
726 status |= VELOCITY_SPEED_100;
727 else if (ANAR & ADVERTISE_10FULL)
728 status |= (VELOCITY_SPEED_10 | VELOCITY_DUPLEX_FULL);
730 status |= (VELOCITY_SPEED_10);
733 if (MII_REG_BITS_IS_ON(BMCR_ANENABLE, MII_BMCR, regs)) {
734 velocity_mii_read(regs, MII_ADVERTISE, &ANAR);
735 if ((ANAR & (ADVERTISE_100FULL | ADVERTISE_100HALF | ADVERTISE_10FULL | ADVERTISE_10HALF))
736 == (ADVERTISE_100FULL | ADVERTISE_100HALF | ADVERTISE_10FULL | ADVERTISE_10HALF)) {
737 if (MII_REG_BITS_IS_ON(ADVERTISE_1000HALF | ADVERTISE_1000FULL, MII_CTRL1000, regs))
738 status |= VELOCITY_AUTONEG_ENABLE;
746 * velocity_mii_write - write MII data
747 * @regs: velocity registers
748 * @index: MII register index
749 * @data: 16bit data for the MII register
751 * Perform a single write to an MII 16bit register. Returns zero
752 * on success or -ETIMEDOUT if the PHY did not respond.
754 static int velocity_mii_write(struct mac_regs __iomem *regs, u8 mii_addr, u16 data)
759 * Disable MIICR_MAUTO, so that mii addr can be set normally
761 safe_disable_mii_autopoll(regs);
764 writeb(mii_addr, ®s->MIIADR);
766 writew(data, ®s->MIIDATA);
768 /* turn on MIICR_WCMD */
769 BYTE_REG_BITS_ON(MIICR_WCMD, ®s->MIICR);
771 /* W_MAX_TIMEOUT is the timeout period */
772 for (ww = 0; ww < W_MAX_TIMEOUT; ww++) {
774 if (!(readb(®s->MIICR) & MIICR_WCMD))
777 enable_mii_autopoll(regs);
779 if (ww == W_MAX_TIMEOUT)
785 * set_mii_flow_control - flow control setup
786 * @vptr: velocity interface
788 * Set up the flow control on this interface according to
789 * the supplied user/eeprom options.
791 static void set_mii_flow_control(struct velocity_info *vptr)
793 /*Enable or Disable PAUSE in ANAR */
794 switch (vptr->options.flow_cntl) {
796 MII_REG_BITS_OFF(ADVERTISE_PAUSE_CAP, MII_ADVERTISE, vptr->mac_regs);
797 MII_REG_BITS_ON(ADVERTISE_PAUSE_ASYM, MII_ADVERTISE, vptr->mac_regs);
801 MII_REG_BITS_ON(ADVERTISE_PAUSE_CAP, MII_ADVERTISE, vptr->mac_regs);
802 MII_REG_BITS_ON(ADVERTISE_PAUSE_ASYM, MII_ADVERTISE, vptr->mac_regs);
805 case FLOW_CNTL_TX_RX:
806 MII_REG_BITS_ON(ADVERTISE_PAUSE_CAP, MII_ADVERTISE, vptr->mac_regs);
807 MII_REG_BITS_OFF(ADVERTISE_PAUSE_ASYM, MII_ADVERTISE, vptr->mac_regs);
810 case FLOW_CNTL_DISABLE:
811 MII_REG_BITS_OFF(ADVERTISE_PAUSE_CAP, MII_ADVERTISE, vptr->mac_regs);
812 MII_REG_BITS_OFF(ADVERTISE_PAUSE_ASYM, MII_ADVERTISE, vptr->mac_regs);
820 * mii_set_auto_on - autonegotiate on
823 * Enable autonegotation on this interface
825 static void mii_set_auto_on(struct velocity_info *vptr)
827 if (MII_REG_BITS_IS_ON(BMCR_ANENABLE, MII_BMCR, vptr->mac_regs))
828 MII_REG_BITS_ON(BMCR_ANRESTART, MII_BMCR, vptr->mac_regs);
830 MII_REG_BITS_ON(BMCR_ANENABLE, MII_BMCR, vptr->mac_regs);
833 static u32 check_connection_type(struct mac_regs __iomem *regs)
838 PHYSR0 = readb(®s->PHYSR0);
841 if (!(PHYSR0 & PHYSR0_LINKGD))
842 status|=VELOCITY_LINK_FAIL;
845 if (PHYSR0 & PHYSR0_FDPX)
846 status |= VELOCITY_DUPLEX_FULL;
848 if (PHYSR0 & PHYSR0_SPDG)
849 status |= VELOCITY_SPEED_1000;
850 else if (PHYSR0 & PHYSR0_SPD10)
851 status |= VELOCITY_SPEED_10;
853 status |= VELOCITY_SPEED_100;
855 if (MII_REG_BITS_IS_ON(BMCR_ANENABLE, MII_BMCR, regs)) {
856 velocity_mii_read(regs, MII_ADVERTISE, &ANAR);
857 if ((ANAR & (ADVERTISE_100FULL | ADVERTISE_100HALF | ADVERTISE_10FULL | ADVERTISE_10HALF))
858 == (ADVERTISE_100FULL | ADVERTISE_100HALF | ADVERTISE_10FULL | ADVERTISE_10HALF)) {
859 if (MII_REG_BITS_IS_ON(ADVERTISE_1000HALF | ADVERTISE_1000FULL, MII_CTRL1000, regs))
860 status |= VELOCITY_AUTONEG_ENABLE;
868 * velocity_set_media_mode - set media mode
869 * @mii_status: old MII link state
871 * Check the media link state and configure the flow control
872 * PHY and also velocity hardware setup accordingly. In particular
873 * we need to set up CD polling and frame bursting.
875 static int velocity_set_media_mode(struct velocity_info *vptr, u32 mii_status)
878 struct mac_regs __iomem *regs = vptr->mac_regs;
880 vptr->mii_status = mii_check_media_mode(vptr->mac_regs);
881 curr_status = vptr->mii_status & (~VELOCITY_LINK_FAIL);
883 /* Set mii link status */
884 set_mii_flow_control(vptr);
887 Check if new status is consistent with current status
888 if (((mii_status & curr_status) & VELOCITY_AUTONEG_ENABLE) ||
889 (mii_status==curr_status)) {
890 vptr->mii_status=mii_check_media_mode(vptr->mac_regs);
891 vptr->mii_status=check_connection_type(vptr->mac_regs);
892 VELOCITY_PRT(MSG_LEVEL_INFO, "Velocity link no change\n");
897 if (PHYID_GET_PHY_ID(vptr->phy_id) == PHYID_CICADA_CS8201)
898 MII_REG_BITS_ON(AUXCR_MDPPS, MII_NCONFIG, vptr->mac_regs);
901 * If connection type is AUTO
903 if (mii_status & VELOCITY_AUTONEG_ENABLE) {
904 VELOCITY_PRT(MSG_LEVEL_INFO, "Velocity is AUTO mode\n");
905 /* clear force MAC mode bit */
906 BYTE_REG_BITS_OFF(CHIPGCR_FCMODE, ®s->CHIPGCR);
907 /* set duplex mode of MAC according to duplex mode of MII */
908 MII_REG_BITS_ON(ADVERTISE_100FULL | ADVERTISE_100HALF | ADVERTISE_10FULL | ADVERTISE_10HALF, MII_ADVERTISE, vptr->mac_regs);
909 MII_REG_BITS_ON(ADVERTISE_1000FULL | ADVERTISE_1000HALF, MII_CTRL1000, vptr->mac_regs);
910 MII_REG_BITS_ON(BMCR_SPEED1000, MII_BMCR, vptr->mac_regs);
912 /* enable AUTO-NEGO mode */
913 mii_set_auto_on(vptr);
920 * 1. if it's 3119, disable frame bursting in halfduplex mode
921 * and enable it in fullduplex mode
922 * 2. set correct MII/GMII and half/full duplex mode in CHIPGCR
923 * 3. only enable CD heart beat counter in 10HD mode
926 /* set force MAC mode bit */
927 BYTE_REG_BITS_ON(CHIPGCR_FCMODE, ®s->CHIPGCR);
929 CHIPGCR = readb(®s->CHIPGCR);
931 if (mii_status & VELOCITY_SPEED_1000)
932 CHIPGCR |= CHIPGCR_FCGMII;
934 CHIPGCR &= ~CHIPGCR_FCGMII;
936 if (mii_status & VELOCITY_DUPLEX_FULL) {
937 CHIPGCR |= CHIPGCR_FCFDX;
938 writeb(CHIPGCR, ®s->CHIPGCR);
939 VELOCITY_PRT(MSG_LEVEL_INFO, "set Velocity to forced full mode\n");
940 if (vptr->rev_id < REV_ID_VT3216_A0)
941 BYTE_REG_BITS_OFF(TCR_TB2BDIS, ®s->TCR);
943 CHIPGCR &= ~CHIPGCR_FCFDX;
944 VELOCITY_PRT(MSG_LEVEL_INFO, "set Velocity to forced half mode\n");
945 writeb(CHIPGCR, ®s->CHIPGCR);
946 if (vptr->rev_id < REV_ID_VT3216_A0)
947 BYTE_REG_BITS_ON(TCR_TB2BDIS, ®s->TCR);
950 velocity_mii_read(vptr->mac_regs, MII_CTRL1000, &CTRL1000);
951 CTRL1000 &= ~(ADVERTISE_1000FULL | ADVERTISE_1000HALF);
952 if ((mii_status & VELOCITY_SPEED_1000) &&
953 (mii_status & VELOCITY_DUPLEX_FULL)) {
954 CTRL1000 |= ADVERTISE_1000FULL;
956 velocity_mii_write(vptr->mac_regs, MII_CTRL1000, CTRL1000);
958 if (!(mii_status & VELOCITY_DUPLEX_FULL) && (mii_status & VELOCITY_SPEED_10))
959 BYTE_REG_BITS_OFF(TESTCFG_HBDIS, ®s->TESTCFG);
961 BYTE_REG_BITS_ON(TESTCFG_HBDIS, ®s->TESTCFG);
963 /* MII_REG_BITS_OFF(BMCR_SPEED1000, MII_BMCR, vptr->mac_regs); */
964 velocity_mii_read(vptr->mac_regs, MII_ADVERTISE, &ANAR);
965 ANAR &= (~(ADVERTISE_100FULL | ADVERTISE_100HALF | ADVERTISE_10FULL | ADVERTISE_10HALF));
966 if (mii_status & VELOCITY_SPEED_100) {
967 if (mii_status & VELOCITY_DUPLEX_FULL)
968 ANAR |= ADVERTISE_100FULL;
970 ANAR |= ADVERTISE_100HALF;
971 } else if (mii_status & VELOCITY_SPEED_10) {
972 if (mii_status & VELOCITY_DUPLEX_FULL)
973 ANAR |= ADVERTISE_10FULL;
975 ANAR |= ADVERTISE_10HALF;
977 velocity_mii_write(vptr->mac_regs, MII_ADVERTISE, ANAR);
978 /* enable AUTO-NEGO mode */
979 mii_set_auto_on(vptr);
980 /* MII_REG_BITS_ON(BMCR_ANENABLE, MII_BMCR, vptr->mac_regs); */
982 /* vptr->mii_status=mii_check_media_mode(vptr->mac_regs); */
983 /* vptr->mii_status=check_connection_type(vptr->mac_regs); */
984 return VELOCITY_LINK_CHANGE;
988 * velocity_print_link_status - link status reporting
989 * @vptr: velocity to report on
991 * Turn the link status of the velocity card into a kernel log
992 * description of the new link state, detailing speed and duplex
995 static void velocity_print_link_status(struct velocity_info *vptr)
998 if (vptr->mii_status & VELOCITY_LINK_FAIL) {
999 VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: failed to detect cable link\n", vptr->dev->name);
1000 } else if (vptr->options.spd_dpx == SPD_DPX_AUTO) {
1001 VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: Link auto-negotiation", vptr->dev->name);
1003 if (vptr->mii_status & VELOCITY_SPEED_1000)
1004 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 1000M bps");
1005 else if (vptr->mii_status & VELOCITY_SPEED_100)
1006 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 100M bps");
1008 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 10M bps");
1010 if (vptr->mii_status & VELOCITY_DUPLEX_FULL)
1011 VELOCITY_PRT(MSG_LEVEL_INFO, " full duplex\n");
1013 VELOCITY_PRT(MSG_LEVEL_INFO, " half duplex\n");
1015 VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: Link forced", vptr->dev->name);
1016 switch (vptr->options.spd_dpx) {
1017 case SPD_DPX_1000_FULL:
1018 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 1000M bps full duplex\n");
1020 case SPD_DPX_100_HALF:
1021 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 100M bps half duplex\n");
1023 case SPD_DPX_100_FULL:
1024 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 100M bps full duplex\n");
1026 case SPD_DPX_10_HALF:
1027 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 10M bps half duplex\n");
1029 case SPD_DPX_10_FULL:
1030 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 10M bps full duplex\n");
1039 * enable_flow_control_ability - flow control
1040 * @vptr: veloity to configure
1042 * Set up flow control according to the flow control options
1043 * determined by the eeprom/configuration.
1045 static void enable_flow_control_ability(struct velocity_info *vptr)
1048 struct mac_regs __iomem *regs = vptr->mac_regs;
1050 switch (vptr->options.flow_cntl) {
1052 case FLOW_CNTL_DEFAULT:
1053 if (BYTE_REG_BITS_IS_ON(PHYSR0_RXFLC, ®s->PHYSR0))
1054 writel(CR0_FDXRFCEN, ®s->CR0Set);
1056 writel(CR0_FDXRFCEN, ®s->CR0Clr);
1058 if (BYTE_REG_BITS_IS_ON(PHYSR0_TXFLC, ®s->PHYSR0))
1059 writel(CR0_FDXTFCEN, ®s->CR0Set);
1061 writel(CR0_FDXTFCEN, ®s->CR0Clr);
1065 writel(CR0_FDXTFCEN, ®s->CR0Set);
1066 writel(CR0_FDXRFCEN, ®s->CR0Clr);
1070 writel(CR0_FDXRFCEN, ®s->CR0Set);
1071 writel(CR0_FDXTFCEN, ®s->CR0Clr);
1074 case FLOW_CNTL_TX_RX:
1075 writel(CR0_FDXTFCEN, ®s->CR0Set);
1076 writel(CR0_FDXRFCEN, ®s->CR0Set);
1079 case FLOW_CNTL_DISABLE:
1080 writel(CR0_FDXRFCEN, ®s->CR0Clr);
1081 writel(CR0_FDXTFCEN, ®s->CR0Clr);
1091 * velocity_soft_reset - soft reset
1092 * @vptr: velocity to reset
1094 * Kick off a soft reset of the velocity adapter and then poll
1095 * until the reset sequence has completed before returning.
1097 static int velocity_soft_reset(struct velocity_info *vptr)
1099 struct mac_regs __iomem *regs = vptr->mac_regs;
1102 writel(CR0_SFRST, ®s->CR0Set);
1104 for (i = 0; i < W_MAX_TIMEOUT; i++) {
1106 if (!DWORD_REG_BITS_IS_ON(CR0_SFRST, ®s->CR0Set))
1110 if (i == W_MAX_TIMEOUT) {
1111 writel(CR0_FORSRST, ®s->CR0Set);
1112 /* FIXME: PCI POSTING */
1120 * velocity_set_multi - filter list change callback
1121 * @dev: network device
1123 * Called by the network layer when the filter lists need to change
1124 * for a velocity adapter. Reload the CAMs with the new address
1127 static void velocity_set_multi(struct net_device *dev)
1129 struct velocity_info *vptr = netdev_priv(dev);
1130 struct mac_regs __iomem *regs = vptr->mac_regs;
1133 struct netdev_hw_addr *ha;
1135 if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */
1136 writel(0xffffffff, ®s->MARCAM[0]);
1137 writel(0xffffffff, ®s->MARCAM[4]);
1138 rx_mode = (RCR_AM | RCR_AB | RCR_PROM);
1139 } else if ((netdev_mc_count(dev) > vptr->multicast_limit) ||
1140 (dev->flags & IFF_ALLMULTI)) {
1141 writel(0xffffffff, ®s->MARCAM[0]);
1142 writel(0xffffffff, ®s->MARCAM[4]);
1143 rx_mode = (RCR_AM | RCR_AB);
1145 int offset = MCAM_SIZE - vptr->multicast_limit;
1146 mac_get_cam_mask(regs, vptr->mCAMmask);
1149 netdev_for_each_mc_addr(ha, dev) {
1150 mac_set_cam(regs, i + offset, ha->addr);
1151 vptr->mCAMmask[(offset + i) / 8] |= 1 << ((offset + i) & 7);
1155 mac_set_cam_mask(regs, vptr->mCAMmask);
1156 rx_mode = RCR_AM | RCR_AB | RCR_AP;
1158 if (dev->mtu > 1500)
1161 BYTE_REG_BITS_ON(rx_mode, ®s->RCR);
1166 * MII access , media link mode setting functions
1170 * mii_init - set up MII
1171 * @vptr: velocity adapter
1172 * @mii_status: links tatus
1174 * Set up the PHY for the current link state.
1176 static void mii_init(struct velocity_info *vptr, u32 mii_status)
1180 switch (PHYID_GET_PHY_ID(vptr->phy_id)) {
1181 case PHYID_CICADA_CS8201:
1183 * Reset to hardware default
1185 MII_REG_BITS_OFF((ADVERTISE_PAUSE_ASYM | ADVERTISE_PAUSE_CAP), MII_ADVERTISE, vptr->mac_regs);
1187 * Turn on ECHODIS bit in NWay-forced full mode and turn it
1188 * off it in NWay-forced half mode for NWay-forced v.s.
1189 * legacy-forced issue.
1191 if (vptr->mii_status & VELOCITY_DUPLEX_FULL)
1192 MII_REG_BITS_ON(TCSR_ECHODIS, MII_SREVISION, vptr->mac_regs);
1194 MII_REG_BITS_OFF(TCSR_ECHODIS, MII_SREVISION, vptr->mac_regs);
1196 * Turn on Link/Activity LED enable bit for CIS8201
1198 MII_REG_BITS_ON(PLED_LALBE, MII_TPISTATUS, vptr->mac_regs);
1200 case PHYID_VT3216_32BIT:
1201 case PHYID_VT3216_64BIT:
1203 * Reset to hardware default
1205 MII_REG_BITS_ON((ADVERTISE_PAUSE_ASYM | ADVERTISE_PAUSE_CAP), MII_ADVERTISE, vptr->mac_regs);
1207 * Turn on ECHODIS bit in NWay-forced full mode and turn it
1208 * off it in NWay-forced half mode for NWay-forced v.s.
1209 * legacy-forced issue
1211 if (vptr->mii_status & VELOCITY_DUPLEX_FULL)
1212 MII_REG_BITS_ON(TCSR_ECHODIS, MII_SREVISION, vptr->mac_regs);
1214 MII_REG_BITS_OFF(TCSR_ECHODIS, MII_SREVISION, vptr->mac_regs);
1217 case PHYID_MARVELL_1000:
1218 case PHYID_MARVELL_1000S:
1220 * Assert CRS on Transmit
1222 MII_REG_BITS_ON(PSCR_ACRSTX, MII_REG_PSCR, vptr->mac_regs);
1224 * Reset to hardware default
1226 MII_REG_BITS_ON((ADVERTISE_PAUSE_ASYM | ADVERTISE_PAUSE_CAP), MII_ADVERTISE, vptr->mac_regs);
1231 velocity_mii_read(vptr->mac_regs, MII_BMCR, &BMCR);
1232 if (BMCR & BMCR_ISOLATE) {
1233 BMCR &= ~BMCR_ISOLATE;
1234 velocity_mii_write(vptr->mac_regs, MII_BMCR, BMCR);
1239 * setup_queue_timers - Setup interrupt timers
1241 * Setup interrupt frequency during suppression (timeout if the frame
1242 * count isn't filled).
1244 static void setup_queue_timers(struct velocity_info *vptr)
1246 /* Only for newer revisions */
1247 if (vptr->rev_id >= REV_ID_VT3216_A0) {
1248 u8 txqueue_timer = 0;
1249 u8 rxqueue_timer = 0;
1251 if (vptr->mii_status & (VELOCITY_SPEED_1000 |
1252 VELOCITY_SPEED_100)) {
1253 txqueue_timer = vptr->options.txqueue_timer;
1254 rxqueue_timer = vptr->options.rxqueue_timer;
1257 writeb(txqueue_timer, &vptr->mac_regs->TQETMR);
1258 writeb(rxqueue_timer, &vptr->mac_regs->RQETMR);
1263 * setup_adaptive_interrupts - Setup interrupt suppression
1265 * @vptr velocity adapter
1267 * The velocity is able to suppress interrupt during high interrupt load.
1268 * This function turns on that feature.
1270 static void setup_adaptive_interrupts(struct velocity_info *vptr)
1272 struct mac_regs __iomem *regs = vptr->mac_regs;
1273 u16 tx_intsup = vptr->options.tx_intsup;
1274 u16 rx_intsup = vptr->options.rx_intsup;
1276 /* Setup default interrupt mask (will be changed below) */
1277 vptr->int_mask = INT_MASK_DEF;
1279 /* Set Tx Interrupt Suppression Threshold */
1280 writeb(CAMCR_PS0, ®s->CAMCR);
1281 if (tx_intsup != 0) {
1282 vptr->int_mask &= ~(ISR_PTXI | ISR_PTX0I | ISR_PTX1I |
1283 ISR_PTX2I | ISR_PTX3I);
1284 writew(tx_intsup, ®s->ISRCTL);
1286 writew(ISRCTL_TSUPDIS, ®s->ISRCTL);
1288 /* Set Rx Interrupt Suppression Threshold */
1289 writeb(CAMCR_PS1, ®s->CAMCR);
1290 if (rx_intsup != 0) {
1291 vptr->int_mask &= ~ISR_PRXI;
1292 writew(rx_intsup, ®s->ISRCTL);
1294 writew(ISRCTL_RSUPDIS, ®s->ISRCTL);
1296 /* Select page to interrupt hold timer */
1297 writeb(0, ®s->CAMCR);
1301 * velocity_init_registers - initialise MAC registers
1302 * @vptr: velocity to init
1303 * @type: type of initialisation (hot or cold)
1305 * Initialise the MAC on a reset or on first set up on the
1308 static void velocity_init_registers(struct velocity_info *vptr,
1309 enum velocity_init_type type)
1311 struct mac_regs __iomem *regs = vptr->mac_regs;
1314 mac_wol_reset(regs);
1317 case VELOCITY_INIT_RESET:
1318 case VELOCITY_INIT_WOL:
1320 netif_stop_queue(vptr->dev);
1323 * Reset RX to prevent RX pointer not on the 4X location
1325 velocity_rx_reset(vptr);
1326 mac_rx_queue_run(regs);
1327 mac_rx_queue_wake(regs);
1329 mii_status = velocity_get_opt_media_mode(vptr);
1330 if (velocity_set_media_mode(vptr, mii_status) != VELOCITY_LINK_CHANGE) {
1331 velocity_print_link_status(vptr);
1332 if (!(vptr->mii_status & VELOCITY_LINK_FAIL))
1333 netif_wake_queue(vptr->dev);
1336 enable_flow_control_ability(vptr);
1338 mac_clear_isr(regs);
1339 writel(CR0_STOP, ®s->CR0Clr);
1340 writel((CR0_DPOLL | CR0_TXON | CR0_RXON | CR0_STRT),
1345 case VELOCITY_INIT_COLD:
1350 velocity_soft_reset(vptr);
1353 mac_eeprom_reload(regs);
1354 for (i = 0; i < 6; i++)
1355 writeb(vptr->dev->dev_addr[i], &(regs->PAR[i]));
1358 * clear Pre_ACPI bit.
1360 BYTE_REG_BITS_OFF(CFGA_PACPI, &(regs->CFGA));
1361 mac_set_rx_thresh(regs, vptr->options.rx_thresh);
1362 mac_set_dma_length(regs, vptr->options.DMA_length);
1364 writeb(WOLCFG_SAM | WOLCFG_SAB, ®s->WOLCFGSet);
1366 * Back off algorithm use original IEEE standard
1368 BYTE_REG_BITS_SET(CFGB_OFSET, (CFGB_CRANDOM | CFGB_CAP | CFGB_MBA | CFGB_BAKOPT), ®s->CFGB);
1373 velocity_init_cam_filter(vptr);
1376 * Set packet filter: Receive directed and broadcast address
1378 velocity_set_multi(vptr->dev);
1381 * Enable MII auto-polling
1383 enable_mii_autopoll(regs);
1385 setup_adaptive_interrupts(vptr);
1387 writel(vptr->rx.pool_dma, ®s->RDBaseLo);
1388 writew(vptr->options.numrx - 1, ®s->RDCSize);
1389 mac_rx_queue_run(regs);
1390 mac_rx_queue_wake(regs);
1392 writew(vptr->options.numtx - 1, ®s->TDCSize);
1394 for (i = 0; i < vptr->tx.numq; i++) {
1395 writel(vptr->tx.pool_dma[i], ®s->TDBaseLo[i]);
1396 mac_tx_queue_run(regs, i);
1399 init_flow_control_register(vptr);
1401 writel(CR0_STOP, ®s->CR0Clr);
1402 writel((CR0_DPOLL | CR0_TXON | CR0_RXON | CR0_STRT), ®s->CR0Set);
1404 mii_status = velocity_get_opt_media_mode(vptr);
1405 netif_stop_queue(vptr->dev);
1407 mii_init(vptr, mii_status);
1409 if (velocity_set_media_mode(vptr, mii_status) != VELOCITY_LINK_CHANGE) {
1410 velocity_print_link_status(vptr);
1411 if (!(vptr->mii_status & VELOCITY_LINK_FAIL))
1412 netif_wake_queue(vptr->dev);
1415 enable_flow_control_ability(vptr);
1416 mac_hw_mibs_init(regs);
1417 mac_write_int_mask(vptr->int_mask, regs);
1418 mac_clear_isr(regs);
1423 static void velocity_give_many_rx_descs(struct velocity_info *vptr)
1425 struct mac_regs __iomem *regs = vptr->mac_regs;
1426 int avail, dirty, unusable;
1429 * RD number must be equal to 4X per hardware spec
1430 * (programming guide rev 1.20, p.13)
1432 if (vptr->rx.filled < 4)
1437 unusable = vptr->rx.filled & 0x0003;
1438 dirty = vptr->rx.dirty - unusable;
1439 for (avail = vptr->rx.filled & 0xfffc; avail; avail--) {
1440 dirty = (dirty > 0) ? dirty - 1 : vptr->options.numrx - 1;
1441 vptr->rx.ring[dirty].rdesc0.len |= OWNED_BY_NIC;
1444 writew(vptr->rx.filled & 0xfffc, ®s->RBRDU);
1445 vptr->rx.filled = unusable;
1449 * velocity_init_dma_rings - set up DMA rings
1450 * @vptr: Velocity to set up
1452 * Allocate PCI mapped DMA rings for the receive and transmit layer
1455 static int velocity_init_dma_rings(struct velocity_info *vptr)
1457 struct velocity_opt *opt = &vptr->options;
1458 const unsigned int rx_ring_size = opt->numrx * sizeof(struct rx_desc);
1459 const unsigned int tx_ring_size = opt->numtx * sizeof(struct tx_desc);
1460 struct pci_dev *pdev = vptr->pdev;
1461 dma_addr_t pool_dma;
1466 * Allocate all RD/TD rings a single pool.
1468 * pci_alloc_consistent() fulfills the requirement for 64 bytes
1471 pool = pci_alloc_consistent(pdev, tx_ring_size * vptr->tx.numq +
1472 rx_ring_size, &pool_dma);
1474 dev_err(&pdev->dev, "%s : DMA memory allocation failed.\n",
1479 vptr->rx.ring = pool;
1480 vptr->rx.pool_dma = pool_dma;
1482 pool += rx_ring_size;
1483 pool_dma += rx_ring_size;
1485 for (i = 0; i < vptr->tx.numq; i++) {
1486 vptr->tx.rings[i] = pool;
1487 vptr->tx.pool_dma[i] = pool_dma;
1488 pool += tx_ring_size;
1489 pool_dma += tx_ring_size;
1495 static void velocity_set_rxbufsize(struct velocity_info *vptr, int mtu)
1497 vptr->rx.buf_sz = (mtu <= ETH_DATA_LEN) ? PKT_BUF_SZ : mtu + 32;
1501 * velocity_alloc_rx_buf - allocate aligned receive buffer
1505 * Allocate a new full sized buffer for the reception of a frame and
1506 * map it into PCI space for the hardware to use. The hardware
1507 * requires *64* byte alignment of the buffer which makes life
1508 * less fun than would be ideal.
1510 static int velocity_alloc_rx_buf(struct velocity_info *vptr, int idx)
1512 struct rx_desc *rd = &(vptr->rx.ring[idx]);
1513 struct velocity_rd_info *rd_info = &(vptr->rx.info[idx]);
1515 rd_info->skb = netdev_alloc_skb(vptr->dev, vptr->rx.buf_sz + 64);
1516 if (rd_info->skb == NULL)
1520 * Do the gymnastics to get the buffer head for data at
1523 skb_reserve(rd_info->skb,
1524 64 - ((unsigned long) rd_info->skb->data & 63));
1525 rd_info->skb_dma = pci_map_single(vptr->pdev, rd_info->skb->data,
1526 vptr->rx.buf_sz, PCI_DMA_FROMDEVICE);
1529 * Fill in the descriptor to match
1532 *((u32 *) & (rd->rdesc0)) = 0;
1533 rd->size = cpu_to_le16(vptr->rx.buf_sz) | RX_INTEN;
1534 rd->pa_low = cpu_to_le32(rd_info->skb_dma);
1540 static int velocity_rx_refill(struct velocity_info *vptr)
1542 int dirty = vptr->rx.dirty, done = 0;
1545 struct rx_desc *rd = vptr->rx.ring + dirty;
1547 /* Fine for an all zero Rx desc at init time as well */
1548 if (rd->rdesc0.len & OWNED_BY_NIC)
1551 if (!vptr->rx.info[dirty].skb) {
1552 if (velocity_alloc_rx_buf(vptr, dirty) < 0)
1556 dirty = (dirty < vptr->options.numrx - 1) ? dirty + 1 : 0;
1557 } while (dirty != vptr->rx.curr);
1560 vptr->rx.dirty = dirty;
1561 vptr->rx.filled += done;
1568 * velocity_free_rd_ring - free receive ring
1569 * @vptr: velocity to clean up
1571 * Free the receive buffers for each ring slot and any
1572 * attached socket buffers that need to go away.
1574 static void velocity_free_rd_ring(struct velocity_info *vptr)
1578 if (vptr->rx.info == NULL)
1581 for (i = 0; i < vptr->options.numrx; i++) {
1582 struct velocity_rd_info *rd_info = &(vptr->rx.info[i]);
1583 struct rx_desc *rd = vptr->rx.ring + i;
1585 memset(rd, 0, sizeof(*rd));
1589 pci_unmap_single(vptr->pdev, rd_info->skb_dma, vptr->rx.buf_sz,
1590 PCI_DMA_FROMDEVICE);
1591 rd_info->skb_dma = 0;
1593 dev_kfree_skb(rd_info->skb);
1594 rd_info->skb = NULL;
1597 kfree(vptr->rx.info);
1598 vptr->rx.info = NULL;
1602 * velocity_init_rd_ring - set up receive ring
1603 * @vptr: velocity to configure
1605 * Allocate and set up the receive buffers for each ring slot and
1606 * assign them to the network adapter.
1608 static int velocity_init_rd_ring(struct velocity_info *vptr)
1612 vptr->rx.info = kcalloc(vptr->options.numrx,
1613 sizeof(struct velocity_rd_info), GFP_KERNEL);
1617 velocity_init_rx_ring_indexes(vptr);
1619 if (velocity_rx_refill(vptr) != vptr->options.numrx) {
1620 VELOCITY_PRT(MSG_LEVEL_ERR, KERN_ERR
1621 "%s: failed to allocate RX buffer.\n", vptr->dev->name);
1622 velocity_free_rd_ring(vptr);
1632 * velocity_init_td_ring - set up transmit ring
1635 * Set up the transmit ring and chain the ring pointers together.
1636 * Returns zero on success or a negative posix errno code for
1639 static int velocity_init_td_ring(struct velocity_info *vptr)
1643 /* Init the TD ring entries */
1644 for (j = 0; j < vptr->tx.numq; j++) {
1646 vptr->tx.infos[j] = kcalloc(vptr->options.numtx,
1647 sizeof(struct velocity_td_info),
1649 if (!vptr->tx.infos[j]) {
1651 kfree(vptr->tx.infos[j]);
1655 vptr->tx.tail[j] = vptr->tx.curr[j] = vptr->tx.used[j] = 0;
1661 * velocity_free_dma_rings - free PCI ring pointers
1662 * @vptr: Velocity to free from
1664 * Clean up the PCI ring buffers allocated to this velocity.
1666 static void velocity_free_dma_rings(struct velocity_info *vptr)
1668 const int size = vptr->options.numrx * sizeof(struct rx_desc) +
1669 vptr->options.numtx * sizeof(struct tx_desc) * vptr->tx.numq;
1671 pci_free_consistent(vptr->pdev, size, vptr->rx.ring, vptr->rx.pool_dma);
1674 static int velocity_init_rings(struct velocity_info *vptr, int mtu)
1678 velocity_set_rxbufsize(vptr, mtu);
1680 ret = velocity_init_dma_rings(vptr);
1684 ret = velocity_init_rd_ring(vptr);
1686 goto err_free_dma_rings_0;
1688 ret = velocity_init_td_ring(vptr);
1690 goto err_free_rd_ring_1;
1695 velocity_free_rd_ring(vptr);
1696 err_free_dma_rings_0:
1697 velocity_free_dma_rings(vptr);
1702 * velocity_free_tx_buf - free transmit buffer
1706 * Release an transmit buffer. If the buffer was preallocated then
1707 * recycle it, if not then unmap the buffer.
1709 static void velocity_free_tx_buf(struct velocity_info *vptr,
1710 struct velocity_td_info *tdinfo, struct tx_desc *td)
1712 struct sk_buff *skb = tdinfo->skb;
1715 * Don't unmap the pre-allocated tx_bufs
1717 if (tdinfo->skb_dma) {
1720 for (i = 0; i < tdinfo->nskb_dma; i++) {
1721 size_t pktlen = max_t(size_t, skb->len, ETH_ZLEN);
1723 /* For scatter-gather */
1724 if (skb_shinfo(skb)->nr_frags > 0)
1725 pktlen = max_t(size_t, pktlen,
1726 td->td_buf[i].size & ~TD_QUEUE);
1728 pci_unmap_single(vptr->pdev, tdinfo->skb_dma[i],
1729 le16_to_cpu(pktlen), PCI_DMA_TODEVICE);
1732 dev_kfree_skb_irq(skb);
1737 * FIXME: could we merge this with velocity_free_tx_buf ?
1739 static void velocity_free_td_ring_entry(struct velocity_info *vptr,
1742 struct velocity_td_info *td_info = &(vptr->tx.infos[q][n]);
1745 if (td_info == NULL)
1749 for (i = 0; i < td_info->nskb_dma; i++) {
1750 if (td_info->skb_dma[i]) {
1751 pci_unmap_single(vptr->pdev, td_info->skb_dma[i],
1752 td_info->skb->len, PCI_DMA_TODEVICE);
1753 td_info->skb_dma[i] = 0;
1756 dev_kfree_skb(td_info->skb);
1757 td_info->skb = NULL;
1762 * velocity_free_td_ring - free td ring
1765 * Free up the transmit ring for this particular velocity adapter.
1766 * We free the ring contents but not the ring itself.
1768 static void velocity_free_td_ring(struct velocity_info *vptr)
1772 for (j = 0; j < vptr->tx.numq; j++) {
1773 if (vptr->tx.infos[j] == NULL)
1775 for (i = 0; i < vptr->options.numtx; i++)
1776 velocity_free_td_ring_entry(vptr, j, i);
1778 kfree(vptr->tx.infos[j]);
1779 vptr->tx.infos[j] = NULL;
1783 static void velocity_free_rings(struct velocity_info *vptr)
1785 velocity_free_td_ring(vptr);
1786 velocity_free_rd_ring(vptr);
1787 velocity_free_dma_rings(vptr);
1791 * velocity_error - handle error from controller
1793 * @status: card status
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
1801 static void velocity_error(struct velocity_info *vptr, int status)
1804 if (status & ISR_TXSTLI) {
1805 struct mac_regs __iomem *regs = vptr->mac_regs;
1807 printk(KERN_ERR "TD structure error TDindex=%hx\n", readw(®s->TDIdx[0]));
1808 BYTE_REG_BITS_ON(TXESR_TDSTR, ®s->TXESR);
1809 writew(TRDCSR_RUN, ®s->TDCSRClr);
1810 netif_stop_queue(vptr->dev);
1812 /* FIXME: port over the pci_device_failed code and use it
1816 if (status & ISR_SRCI) {
1817 struct mac_regs __iomem *regs = vptr->mac_regs;
1820 if (vptr->options.spd_dpx == SPD_DPX_AUTO) {
1821 vptr->mii_status = check_connection_type(regs);
1824 * If it is a 3119, disable frame bursting in
1825 * halfduplex mode and enable it in fullduplex
1828 if (vptr->rev_id < REV_ID_VT3216_A0) {
1829 if (vptr->mii_status & VELOCITY_DUPLEX_FULL)
1830 BYTE_REG_BITS_ON(TCR_TB2BDIS, ®s->TCR);
1832 BYTE_REG_BITS_OFF(TCR_TB2BDIS, ®s->TCR);
1835 * Only enable CD heart beat counter in 10HD mode
1837 if (!(vptr->mii_status & VELOCITY_DUPLEX_FULL) && (vptr->mii_status & VELOCITY_SPEED_10))
1838 BYTE_REG_BITS_OFF(TESTCFG_HBDIS, ®s->TESTCFG);
1840 BYTE_REG_BITS_ON(TESTCFG_HBDIS, ®s->TESTCFG);
1842 setup_queue_timers(vptr);
1845 * Get link status from PHYSR0
1847 linked = readb(®s->PHYSR0) & PHYSR0_LINKGD;
1850 vptr->mii_status &= ~VELOCITY_LINK_FAIL;
1851 netif_carrier_on(vptr->dev);
1853 vptr->mii_status |= VELOCITY_LINK_FAIL;
1854 netif_carrier_off(vptr->dev);
1857 velocity_print_link_status(vptr);
1858 enable_flow_control_ability(vptr);
1861 * Re-enable auto-polling because SRCI will disable
1865 enable_mii_autopoll(regs);
1867 if (vptr->mii_status & VELOCITY_LINK_FAIL)
1868 netif_stop_queue(vptr->dev);
1870 netif_wake_queue(vptr->dev);
1873 if (status & ISR_MIBFI)
1874 velocity_update_hw_mibs(vptr);
1875 if (status & ISR_LSTEI)
1876 mac_rx_queue_wake(vptr->mac_regs);
1880 * tx_srv - transmit interrupt service
1883 * Scan the queues looking for transmitted packets that
1884 * we can complete and clean up. Update any statistics as
1887 static int velocity_tx_srv(struct velocity_info *vptr)
1894 struct velocity_td_info *tdinfo;
1895 struct net_device_stats *stats = &vptr->dev->stats;
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) {
1904 td = &(vptr->tx.rings[qnum][idx]);
1905 tdinfo = &(vptr->tx.infos[qnum][idx]);
1907 if (td->tdesc0.len & OWNED_BY_NIC)
1913 if (td->tdesc0.TSR & TSR0_TERR) {
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++;
1925 stats->tx_packets++;
1926 stats->tx_bytes += tdinfo->skb->len;
1928 velocity_free_tx_buf(vptr, tdinfo, td);
1929 vptr->tx.used[qnum]--;
1931 vptr->tx.tail[qnum] = idx;
1933 if (AVAIL_TD(vptr, qnum) < 1)
1937 * Look to see if we should kick the transmit network
1938 * layer for more work.
1940 if (netif_queue_stopped(vptr->dev) && (full == 0) &&
1941 (!(vptr->mii_status & VELOCITY_LINK_FAIL))) {
1942 netif_wake_queue(vptr->dev);
1948 * velocity_rx_csum - checksum process
1949 * @rd: receive packet descriptor
1950 * @skb: network layer packet buffer
1952 * Process the status bits for the received packet and determine
1953 * if the checksum was computed and verified by the hardware
1955 static inline void velocity_rx_csum(struct rx_desc *rd, struct sk_buff *skb)
1957 skb_checksum_none_assert(skb);
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))
1966 skb->ip_summed = CHECKSUM_UNNECESSARY;
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
1978 * Replace the current skb that is scheduled for Rx processing by a
1979 * shorter, immediately 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.
1983 static int velocity_rx_copy(struct sk_buff **rx_skb, int pkt_size,
1984 struct velocity_info *vptr)
1987 if (pkt_size < rx_copybreak) {
1988 struct sk_buff *new_skb;
1990 new_skb = netdev_alloc_skb_ip_align(vptr->dev, pkt_size);
1992 new_skb->ip_summed = rx_skb[0]->ip_summed;
1993 skb_copy_from_linear_data(*rx_skb, new_skb->data, pkt_size);
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
2008 * Align IP header on a 2 bytes boundary. This behavior can be
2009 * configured by the user.
2011 static inline void velocity_iph_realign(struct velocity_info *vptr,
2012 struct sk_buff *skb, int pkt_size)
2014 if (vptr->flags & VELOCITY_FLAGS_IP_ALIGN) {
2015 memmove(skb->data + 2, skb->data, pkt_size);
2016 skb_reserve(skb, 2);
2021 * velocity_receive_frame - received packet processor
2022 * @vptr: velocity we are handling
2025 * A packet has arrived. We process the packet and if appropriate
2026 * pass the frame up the network stack
2028 static int velocity_receive_frame(struct velocity_info *vptr, int idx)
2030 void (*pci_action)(struct pci_dev *, dma_addr_t, size_t, int);
2031 struct net_device_stats *stats = &vptr->dev->stats;
2032 struct velocity_rd_info *rd_info = &(vptr->rx.info[idx]);
2033 struct rx_desc *rd = &(vptr->rx.ring[idx]);
2034 int pkt_len = le16_to_cpu(rd->rdesc0.len) & 0x3fff;
2035 struct sk_buff *skb;
2037 if (rd->rdesc0.RSR & (RSR_STP | RSR_EDP)) {
2038 VELOCITY_PRT(MSG_LEVEL_VERBOSE, KERN_ERR " %s : the received frame span multple RDs.\n", vptr->dev->name);
2039 stats->rx_length_errors++;
2043 if (rd->rdesc0.RSR & RSR_MAR)
2048 pci_dma_sync_single_for_cpu(vptr->pdev, rd_info->skb_dma,
2049 vptr->rx.buf_sz, PCI_DMA_FROMDEVICE);
2052 * Drop frame not meeting IEEE 802.3
2055 if (vptr->flags & VELOCITY_FLAGS_VAL_PKT_LEN) {
2056 if (rd->rdesc0.RSR & RSR_RL) {
2057 stats->rx_length_errors++;
2062 pci_action = pci_dma_sync_single_for_device;
2064 velocity_rx_csum(rd, skb);
2066 if (velocity_rx_copy(&skb, pkt_len, vptr) < 0) {
2067 velocity_iph_realign(vptr, skb, pkt_len);
2068 pci_action = pci_unmap_single;
2069 rd_info->skb = NULL;
2072 pci_action(vptr->pdev, rd_info->skb_dma, vptr->rx.buf_sz,
2073 PCI_DMA_FROMDEVICE);
2075 skb_put(skb, pkt_len - 4);
2076 skb->protocol = eth_type_trans(skb, vptr->dev);
2078 if (rd->rdesc0.RSR & RSR_DETAG) {
2079 u16 vid = swab16(le16_to_cpu(rd->rdesc1.PQTAG));
2081 __vlan_hwaccel_put_tag(skb, vid);
2085 stats->rx_bytes += pkt_len;
2086 stats->rx_packets++;
2092 * velocity_rx_srv - service RX interrupt
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.
2099 static int velocity_rx_srv(struct velocity_info *vptr, int budget_left)
2101 struct net_device_stats *stats = &vptr->dev->stats;
2102 int rd_curr = vptr->rx.curr;
2105 while (works < budget_left) {
2106 struct rx_desc *rd = vptr->rx.ring + rd_curr;
2108 if (!vptr->rx.info[rd_curr].skb)
2111 if (rd->rdesc0.len & OWNED_BY_NIC)
2117 * Don't drop CE or RL error frame although RXOK is off
2119 if (rd->rdesc0.RSR & (RSR_RXOK | RSR_CE | RSR_RL)) {
2120 if (velocity_receive_frame(vptr, rd_curr) < 0)
2121 stats->rx_dropped++;
2123 if (rd->rdesc0.RSR & RSR_CRC)
2124 stats->rx_crc_errors++;
2125 if (rd->rdesc0.RSR & RSR_FAE)
2126 stats->rx_frame_errors++;
2128 stats->rx_dropped++;
2131 rd->size |= RX_INTEN;
2134 if (rd_curr >= vptr->options.numrx)
2139 vptr->rx.curr = rd_curr;
2141 if ((works > 0) && (velocity_rx_refill(vptr) > 0))
2142 velocity_give_many_rx_descs(vptr);
2148 static int velocity_poll(struct napi_struct *napi, int budget)
2150 struct velocity_info *vptr = container_of(napi,
2151 struct velocity_info, napi);
2152 unsigned int rx_done;
2153 unsigned long flags;
2155 spin_lock_irqsave(&vptr->lock, flags);
2157 * Do rx and tx twice for performance (taken from the VIA
2158 * out-of-tree driver).
2160 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);
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);
2170 spin_unlock_irqrestore(&vptr->lock, flags);
2176 * velocity_intr - interrupt callback
2177 * @irq: interrupt number
2178 * @dev_instance: interrupting device
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.
2185 static irqreturn_t velocity_intr(int irq, void *dev_instance)
2187 struct net_device *dev = dev_instance;
2188 struct velocity_info *vptr = netdev_priv(dev);
2191 spin_lock(&vptr->lock);
2192 isr_status = mac_read_isr(vptr->mac_regs);
2195 if (isr_status == 0) {
2196 spin_unlock(&vptr->lock);
2200 /* Ack the interrupt */
2201 mac_write_isr(vptr->mac_regs, isr_status);
2203 if (likely(napi_schedule_prep(&vptr->napi))) {
2204 mac_disable_int(vptr->mac_regs);
2205 __napi_schedule(&vptr->napi);
2208 if (isr_status & (~(ISR_PRXI | ISR_PPRXI | ISR_PTXI | ISR_PPTXI)))
2209 velocity_error(vptr, isr_status);
2211 spin_unlock(&vptr->lock);
2217 * velocity_open - interface activation callback
2218 * @dev: network layer device to open
2220 * Called when the network layer brings the interface up. Returns
2221 * a negative posix error code on failure, or zero on success.
2223 * All the ring allocation and set up is done on open for this
2224 * adapter to minimise memory usage when inactive
2226 static int velocity_open(struct net_device *dev)
2228 struct velocity_info *vptr = netdev_priv(dev);
2231 ret = velocity_init_rings(vptr, dev->mtu);
2235 /* Ensure chip is running */
2236 pci_set_power_state(vptr->pdev, PCI_D0);
2238 velocity_init_registers(vptr, VELOCITY_INIT_COLD);
2240 ret = request_irq(vptr->pdev->irq, velocity_intr, IRQF_SHARED,
2243 /* Power down the chip */
2244 pci_set_power_state(vptr->pdev, PCI_D3hot);
2245 velocity_free_rings(vptr);
2249 velocity_give_many_rx_descs(vptr);
2251 mac_enable_int(vptr->mac_regs);
2252 netif_start_queue(dev);
2253 napi_enable(&vptr->napi);
2254 vptr->flags |= VELOCITY_FLAGS_OPENED;
2260 * velocity_shutdown - shut down the chip
2261 * @vptr: velocity to deactivate
2263 * Shuts down the internal operations of the velocity and
2264 * disables interrupts, autopolling, transmit and receive
2266 static void velocity_shutdown(struct velocity_info *vptr)
2268 struct mac_regs __iomem *regs = vptr->mac_regs;
2269 mac_disable_int(regs);
2270 writel(CR0_STOP, ®s->CR0Set);
2271 writew(0xFFFF, ®s->TDCSRClr);
2272 writeb(0xFF, ®s->RDCSRClr);
2273 safe_disable_mii_autopoll(regs);
2274 mac_clear_isr(regs);
2278 * velocity_change_mtu - MTU change callback
2279 * @dev: network device
2280 * @new_mtu: desired MTU
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.
2286 static int velocity_change_mtu(struct net_device *dev, int new_mtu)
2288 struct velocity_info *vptr = netdev_priv(dev);
2291 if ((new_mtu < VELOCITY_MIN_MTU) || new_mtu > (VELOCITY_MAX_MTU)) {
2292 VELOCITY_PRT(MSG_LEVEL_ERR, KERN_NOTICE "%s: Invalid MTU.\n",
2298 if (!netif_running(dev)) {
2303 if (dev->mtu != new_mtu) {
2304 struct velocity_info *tmp_vptr;
2305 unsigned long flags;
2309 tmp_vptr = kzalloc(sizeof(*tmp_vptr), GFP_KERNEL);
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;
2320 ret = velocity_init_rings(tmp_vptr, new_mtu);
2322 goto out_free_tmp_vptr_1;
2324 spin_lock_irqsave(&vptr->lock, flags);
2326 netif_stop_queue(dev);
2327 velocity_shutdown(vptr);
2332 vptr->rx = tmp_vptr->rx;
2333 vptr->tx = tmp_vptr->tx;
2340 velocity_init_registers(vptr, VELOCITY_INIT_COLD);
2342 velocity_give_many_rx_descs(vptr);
2344 mac_enable_int(vptr->mac_regs);
2345 netif_start_queue(dev);
2347 spin_unlock_irqrestore(&vptr->lock, flags);
2349 velocity_free_rings(tmp_vptr);
2351 out_free_tmp_vptr_1:
2359 * velocity_mii_ioctl - MII ioctl handler
2360 * @dev: network device
2361 * @ifr: the ifreq block for the ioctl
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
2368 static int velocity_mii_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
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);
2378 miidata->phy_id = readb(®s->MIIADR) & 0x1f;
2381 if (velocity_mii_read(vptr->mac_regs, miidata->reg_num & 0x1f, &(miidata->val_out)) < 0)
2385 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);
2399 * velocity_ioctl - ioctl entry point
2400 * @dev: network device
2401 * @rq: interface request ioctl
2402 * @cmd: command code
2404 * Called when the user issues an ioctl request to the network
2405 * device in question. The velocity interface supports MII.
2407 static int velocity_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2409 struct velocity_info *vptr = netdev_priv(dev);
2412 /* If we are asked for information and the device is power
2413 saving then we need to bring the device back up to talk to it */
2415 if (!netif_running(dev))
2416 pci_set_power_state(vptr->pdev, PCI_D0);
2419 case SIOCGMIIPHY: /* Get address of MII PHY in use. */
2420 case SIOCGMIIREG: /* Read MII PHY register. */
2421 case SIOCSMIIREG: /* Write to MII PHY register. */
2422 ret = velocity_mii_ioctl(dev, rq, cmd);
2428 if (!netif_running(dev))
2429 pci_set_power_state(vptr->pdev, PCI_D3hot);
2436 * velocity_get_status - statistics callback
2437 * @dev: network device
2439 * Callback from the network layer to allow driver statistics
2440 * to be resynchronized with hardware collected state. In the
2441 * case of the velocity we need to pull the MIB counters from
2442 * the hardware into the counters before letting the network
2443 * layer display them.
2445 static struct net_device_stats *velocity_get_stats(struct net_device *dev)
2447 struct velocity_info *vptr = netdev_priv(dev);
2449 /* If the hardware is down, don't touch MII */
2450 if (!netif_running(dev))
2453 spin_lock_irq(&vptr->lock);
2454 velocity_update_hw_mibs(vptr);
2455 spin_unlock_irq(&vptr->lock);
2457 dev->stats.rx_packets = vptr->mib_counter[HW_MIB_ifRxAllPkts];
2458 dev->stats.rx_errors = vptr->mib_counter[HW_MIB_ifRxErrorPkts];
2459 dev->stats.rx_length_errors = vptr->mib_counter[HW_MIB_ifInRangeLengthErrors];
2461 // unsigned long rx_dropped; /* no space in linux buffers */
2462 dev->stats.collisions = vptr->mib_counter[HW_MIB_ifTxEtherCollisions];
2463 /* detailed rx_errors: */
2464 // unsigned long rx_length_errors;
2465 // unsigned long rx_over_errors; /* receiver ring buff overflow */
2466 dev->stats.rx_crc_errors = vptr->mib_counter[HW_MIB_ifRxPktCRCE];
2467 // unsigned long rx_frame_errors; /* recv'd frame alignment error */
2468 // unsigned long rx_fifo_errors; /* recv'r fifo overrun */
2469 // unsigned long rx_missed_errors; /* receiver missed packet */
2471 /* detailed tx_errors */
2472 // unsigned long tx_fifo_errors;
2478 * velocity_close - close adapter callback
2479 * @dev: network device
2481 * Callback from the network layer when the velocity is being
2482 * deactivated by the network layer
2484 static int velocity_close(struct net_device *dev)
2486 struct velocity_info *vptr = netdev_priv(dev);
2488 napi_disable(&vptr->napi);
2489 netif_stop_queue(dev);
2490 velocity_shutdown(vptr);
2492 if (vptr->flags & VELOCITY_FLAGS_WOL_ENABLED)
2493 velocity_get_ip(vptr);
2495 free_irq(vptr->pdev->irq, dev);
2497 velocity_free_rings(vptr);
2499 vptr->flags &= (~VELOCITY_FLAGS_OPENED);
2504 * velocity_xmit - transmit packet callback
2505 * @skb: buffer to transmit
2506 * @dev: network device
2508 * Called by the networ layer to request a packet is queued to
2509 * the velocity. Returns zero on success.
2511 static netdev_tx_t velocity_xmit(struct sk_buff *skb,
2512 struct net_device *dev)
2514 struct velocity_info *vptr = netdev_priv(dev);
2516 struct tx_desc *td_ptr;
2517 struct velocity_td_info *tdinfo;
2518 unsigned long flags;
2523 if (skb_padto(skb, ETH_ZLEN))
2526 /* The hardware can handle at most 7 memory segments, so merge
2527 * the skb if there are more */
2528 if (skb_shinfo(skb)->nr_frags > 6 && __skb_linearize(skb)) {
2530 return NETDEV_TX_OK;
2533 pktlen = skb_shinfo(skb)->nr_frags == 0 ?
2534 max_t(unsigned int, skb->len, ETH_ZLEN) :
2537 spin_lock_irqsave(&vptr->lock, flags);
2539 index = vptr->tx.curr[qnum];
2540 td_ptr = &(vptr->tx.rings[qnum][index]);
2541 tdinfo = &(vptr->tx.infos[qnum][index]);
2543 td_ptr->tdesc1.TCR = TCR0_TIC;
2544 td_ptr->td_buf[0].size &= ~TD_QUEUE;
2547 * Map the linear network buffer into PCI space and
2548 * add it to the transmit ring.
2551 tdinfo->skb_dma[0] = pci_map_single(vptr->pdev, skb->data, pktlen, PCI_DMA_TODEVICE);
2552 td_ptr->tdesc0.len = cpu_to_le16(pktlen);
2553 td_ptr->td_buf[0].pa_low = cpu_to_le32(tdinfo->skb_dma[0]);
2554 td_ptr->td_buf[0].pa_high = 0;
2555 td_ptr->td_buf[0].size = cpu_to_le16(pktlen);
2557 /* Handle fragments */
2558 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
2559 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
2561 tdinfo->skb_dma[i + 1] = skb_frag_dma_map(&vptr->pdev->dev,
2563 skb_frag_size(frag),
2566 td_ptr->td_buf[i + 1].pa_low = cpu_to_le32(tdinfo->skb_dma[i + 1]);
2567 td_ptr->td_buf[i + 1].pa_high = 0;
2568 td_ptr->td_buf[i + 1].size = cpu_to_le16(skb_frag_size(frag));
2570 tdinfo->nskb_dma = i + 1;
2572 td_ptr->tdesc1.cmd = TCPLS_NORMAL + (tdinfo->nskb_dma + 1) * 16;
2574 if (vlan_tx_tag_present(skb)) {
2575 td_ptr->tdesc1.vlan = cpu_to_le16(vlan_tx_tag_get(skb));
2576 td_ptr->tdesc1.TCR |= TCR0_VETAG;
2580 * Handle hardware checksum
2582 if (skb->ip_summed == CHECKSUM_PARTIAL) {
2583 const struct iphdr *ip = ip_hdr(skb);
2584 if (ip->protocol == IPPROTO_TCP)
2585 td_ptr->tdesc1.TCR |= TCR0_TCPCK;
2586 else if (ip->protocol == IPPROTO_UDP)
2587 td_ptr->tdesc1.TCR |= (TCR0_UDPCK);
2588 td_ptr->tdesc1.TCR |= TCR0_IPCK;
2593 prev = vptr->options.numtx - 1;
2594 td_ptr->tdesc0.len |= OWNED_BY_NIC;
2595 vptr->tx.used[qnum]++;
2596 vptr->tx.curr[qnum] = (index + 1) % vptr->options.numtx;
2598 if (AVAIL_TD(vptr, qnum) < 1)
2599 netif_stop_queue(dev);
2601 td_ptr = &(vptr->tx.rings[qnum][prev]);
2602 td_ptr->td_buf[0].size |= TD_QUEUE;
2603 mac_tx_queue_wake(vptr->mac_regs, qnum);
2605 spin_unlock_irqrestore(&vptr->lock, flags);
2607 return NETDEV_TX_OK;
2610 static const struct net_device_ops velocity_netdev_ops = {
2611 .ndo_open = velocity_open,
2612 .ndo_stop = velocity_close,
2613 .ndo_start_xmit = velocity_xmit,
2614 .ndo_get_stats = velocity_get_stats,
2615 .ndo_validate_addr = eth_validate_addr,
2616 .ndo_set_mac_address = eth_mac_addr,
2617 .ndo_set_rx_mode = velocity_set_multi,
2618 .ndo_change_mtu = velocity_change_mtu,
2619 .ndo_do_ioctl = velocity_ioctl,
2620 .ndo_vlan_rx_add_vid = velocity_vlan_rx_add_vid,
2621 .ndo_vlan_rx_kill_vid = velocity_vlan_rx_kill_vid,
2625 * velocity_init_info - init private data
2627 * @vptr: Velocity info
2630 * Set up the initial velocity_info struct for the device that has been
2633 static void velocity_init_info(struct pci_dev *pdev,
2634 struct velocity_info *vptr,
2635 const struct velocity_info_tbl *info)
2637 memset(vptr, 0, sizeof(struct velocity_info));
2640 vptr->chip_id = info->chip_id;
2641 vptr->tx.numq = info->txqueue;
2642 vptr->multicast_limit = MCAM_SIZE;
2643 spin_lock_init(&vptr->lock);
2647 * velocity_get_pci_info - retrieve PCI info for device
2648 * @vptr: velocity device
2649 * @pdev: PCI device it matches
2651 * Retrieve the PCI configuration space data that interests us from
2652 * the kernel PCI layer
2654 static int velocity_get_pci_info(struct velocity_info *vptr,
2655 struct pci_dev *pdev)
2657 vptr->rev_id = pdev->revision;
2659 pci_set_master(pdev);
2661 vptr->ioaddr = pci_resource_start(pdev, 0);
2662 vptr->memaddr = pci_resource_start(pdev, 1);
2664 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_IO)) {
2666 "region #0 is not an I/O resource, aborting.\n");
2670 if ((pci_resource_flags(pdev, 1) & IORESOURCE_IO)) {
2672 "region #1 is an I/O resource, aborting.\n");
2676 if (pci_resource_len(pdev, 1) < VELOCITY_IO_SIZE) {
2677 dev_err(&pdev->dev, "region #1 is too small.\n");
2686 * velocity_print_info - per driver data
2689 * Print per driver data as the kernel driver finds Velocity
2692 static void velocity_print_info(struct velocity_info *vptr)
2694 struct net_device *dev = vptr->dev;
2696 printk(KERN_INFO "%s: %s\n", dev->name, get_chip_name(vptr->chip_id));
2697 printk(KERN_INFO "%s: Ethernet Address: %pM\n",
2698 dev->name, dev->dev_addr);
2701 static u32 velocity_get_link(struct net_device *dev)
2703 struct velocity_info *vptr = netdev_priv(dev);
2704 struct mac_regs __iomem *regs = vptr->mac_regs;
2705 return BYTE_REG_BITS_IS_ON(PHYSR0_LINKGD, ®s->PHYSR0) ? 1 : 0;
2709 * velocity_found1 - set up discovered velocity card
2711 * @ent: PCI device table entry that matched
2713 * Configure a discovered adapter from scratch. Return a negative
2714 * errno error code on failure paths.
2716 static int velocity_found1(struct pci_dev *pdev,
2717 const struct pci_device_id *ent)
2719 static int first = 1;
2720 struct net_device *dev;
2722 const char *drv_string;
2723 const struct velocity_info_tbl *info = &chip_info_table[ent->driver_data];
2724 struct velocity_info *vptr;
2725 struct mac_regs __iomem *regs;
2728 /* FIXME: this driver, like almost all other ethernet drivers,
2729 * can support more than MAX_UNITS.
2731 if (velocity_nics >= MAX_UNITS) {
2732 dev_notice(&pdev->dev, "already found %d NICs.\n",
2737 dev = alloc_etherdev(sizeof(struct velocity_info));
2741 /* Chain it all together */
2743 SET_NETDEV_DEV(dev, &pdev->dev);
2744 vptr = netdev_priv(dev);
2748 printk(KERN_INFO "%s Ver. %s\n",
2749 VELOCITY_FULL_DRV_NAM, VELOCITY_VERSION);
2750 printk(KERN_INFO "Copyright (c) 2002, 2003 VIA Networking Technologies, Inc.\n");
2751 printk(KERN_INFO "Copyright (c) 2004 Red Hat Inc.\n");
2755 velocity_init_info(pdev, vptr, info);
2759 ret = pci_enable_device(pdev);
2763 ret = velocity_get_pci_info(vptr, pdev);
2765 /* error message already printed */
2769 ret = pci_request_regions(pdev, VELOCITY_NAME);
2771 dev_err(&pdev->dev, "No PCI resources.\n");
2775 regs = ioremap(vptr->memaddr, VELOCITY_IO_SIZE);
2778 goto err_release_res;
2781 vptr->mac_regs = regs;
2783 mac_wol_reset(regs);
2785 for (i = 0; i < 6; i++)
2786 dev->dev_addr[i] = readb(®s->PAR[i]);
2789 drv_string = dev_driver_string(&pdev->dev);
2791 velocity_get_options(&vptr->options, velocity_nics, drv_string);
2794 * Mask out the options cannot be set to the chip
2797 vptr->options.flags &= info->flags;
2800 * Enable the chip specified capbilities
2803 vptr->flags = vptr->options.flags | (info->flags & 0xFF000000UL);
2805 vptr->wol_opts = vptr->options.wol_opts;
2806 vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
2808 vptr->phy_id = MII_GET_PHY_ID(vptr->mac_regs);
2810 dev->netdev_ops = &velocity_netdev_ops;
2811 dev->ethtool_ops = &velocity_ethtool_ops;
2812 netif_napi_add(dev, &vptr->napi, velocity_poll, VELOCITY_NAPI_WEIGHT);
2814 dev->hw_features = NETIF_F_IP_CSUM | NETIF_F_SG | NETIF_F_HW_VLAN_TX;
2815 dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER |
2816 NETIF_F_HW_VLAN_RX | NETIF_F_IP_CSUM;
2818 ret = register_netdev(dev);
2822 if (!velocity_get_link(dev)) {
2823 netif_carrier_off(dev);
2824 vptr->mii_status |= VELOCITY_LINK_FAIL;
2827 velocity_print_info(vptr);
2828 pci_set_drvdata(pdev, dev);
2830 /* and leave the chip powered down */
2832 pci_set_power_state(pdev, PCI_D3hot);
2840 pci_release_regions(pdev);
2842 pci_disable_device(pdev);
2850 * wol_calc_crc - WOL CRC
2851 * @pattern: data pattern
2852 * @mask_pattern: mask
2854 * Compute the wake on lan crc hashes for the packet header
2855 * we are interested in.
2857 static u16 wol_calc_crc(int size, u8 *pattern, u8 *mask_pattern)
2863 for (i = 0; i < size; i++) {
2864 mask = mask_pattern[i];
2866 /* Skip this loop if the mask equals to zero */
2870 for (j = 0; j < 8; j++) {
2871 if ((mask & 0x01) == 0) {
2876 crc = crc_ccitt(crc, &(pattern[i * 8 + j]), 1);
2879 /* Finally, invert the result once to get the correct data */
2881 return bitrev32(crc) >> 16;
2885 * velocity_set_wol - set up for wake on lan
2886 * @vptr: velocity to set WOL status on
2888 * Set a card up for wake on lan either by unicast or by
2891 * FIXME: check static buffer is safe here
2893 static int velocity_set_wol(struct velocity_info *vptr)
2895 struct mac_regs __iomem *regs = vptr->mac_regs;
2896 enum speed_opt spd_dpx = vptr->options.spd_dpx;
2900 static u32 mask_pattern[2][4] = {
2901 {0x00203000, 0x000003C0, 0x00000000, 0x0000000}, /* ARP */
2902 {0xfffff000, 0xffffffff, 0xffffffff, 0x000ffff} /* Magic Packet */
2905 writew(0xFFFF, ®s->WOLCRClr);
2906 writeb(WOLCFG_SAB | WOLCFG_SAM, ®s->WOLCFGSet);
2907 writew(WOLCR_MAGIC_EN, ®s->WOLCRSet);
2910 if (vptr->wol_opts & VELOCITY_WOL_PHY)
2911 writew((WOLCR_LINKON_EN|WOLCR_LINKOFF_EN), ®s->WOLCRSet);
2914 if (vptr->wol_opts & VELOCITY_WOL_UCAST)
2915 writew(WOLCR_UNICAST_EN, ®s->WOLCRSet);
2917 if (vptr->wol_opts & VELOCITY_WOL_ARP) {
2918 struct arp_packet *arp = (struct arp_packet *) buf;
2920 memset(buf, 0, sizeof(struct arp_packet) + 7);
2922 for (i = 0; i < 4; i++)
2923 writel(mask_pattern[0][i], ®s->ByteMask[0][i]);
2925 arp->type = htons(ETH_P_ARP);
2926 arp->ar_op = htons(1);
2928 memcpy(arp->ar_tip, vptr->ip_addr, 4);
2930 crc = wol_calc_crc((sizeof(struct arp_packet) + 7) / 8, buf,
2931 (u8 *) & mask_pattern[0][0]);
2933 writew(crc, ®s->PatternCRC[0]);
2934 writew(WOLCR_ARP_EN, ®s->WOLCRSet);
2937 BYTE_REG_BITS_ON(PWCFG_WOLTYPE, ®s->PWCFGSet);
2938 BYTE_REG_BITS_ON(PWCFG_LEGACY_WOLEN, ®s->PWCFGSet);
2940 writew(0x0FFF, ®s->WOLSRClr);
2942 if (spd_dpx == SPD_DPX_1000_FULL)
2945 if (spd_dpx != SPD_DPX_AUTO)
2946 goto advertise_done;
2948 if (vptr->mii_status & VELOCITY_AUTONEG_ENABLE) {
2949 if (PHYID_GET_PHY_ID(vptr->phy_id) == PHYID_CICADA_CS8201)
2950 MII_REG_BITS_ON(AUXCR_MDPPS, MII_NCONFIG, vptr->mac_regs);
2952 MII_REG_BITS_OFF(ADVERTISE_1000FULL | ADVERTISE_1000HALF, MII_CTRL1000, vptr->mac_regs);
2955 if (vptr->mii_status & VELOCITY_SPEED_1000)
2956 MII_REG_BITS_ON(BMCR_ANRESTART, MII_BMCR, vptr->mac_regs);
2959 BYTE_REG_BITS_ON(CHIPGCR_FCMODE, ®s->CHIPGCR);
2963 GCR = readb(®s->CHIPGCR);
2964 GCR = (GCR & ~CHIPGCR_FCGMII) | CHIPGCR_FCFDX;
2965 writeb(GCR, ®s->CHIPGCR);
2969 BYTE_REG_BITS_OFF(ISR_PWEI, ®s->ISR);
2970 /* Turn on SWPTAG just before entering power mode */
2971 BYTE_REG_BITS_ON(STICKHW_SWPTAG, ®s->STICKHW);
2972 /* Go to bed ..... */
2973 BYTE_REG_BITS_ON((STICKHW_DS1 | STICKHW_DS0), ®s->STICKHW);
2979 * velocity_save_context - save registers
2981 * @context: buffer for stored context
2983 * Retrieve the current configuration from the velocity hardware
2984 * and stash it in the context structure, for use by the context
2985 * restore functions. This allows us to save things we need across
2988 static void velocity_save_context(struct velocity_info *vptr, struct velocity_context *context)
2990 struct mac_regs __iomem *regs = vptr->mac_regs;
2992 u8 __iomem *ptr = (u8 __iomem *)regs;
2994 for (i = MAC_REG_PAR; i < MAC_REG_CR0_CLR; i += 4)
2995 *((u32 *) (context->mac_reg + i)) = readl(ptr + i);
2997 for (i = MAC_REG_MAR; i < MAC_REG_TDCSR_CLR; i += 4)
2998 *((u32 *) (context->mac_reg + i)) = readl(ptr + i);
3000 for (i = MAC_REG_RDBASE_LO; i < MAC_REG_FIFO_TEST0; i += 4)
3001 *((u32 *) (context->mac_reg + i)) = readl(ptr + i);
3005 static int velocity_suspend(struct pci_dev *pdev, pm_message_t state)
3007 struct net_device *dev = pci_get_drvdata(pdev);
3008 struct velocity_info *vptr = netdev_priv(dev);
3009 unsigned long flags;
3011 if (!netif_running(vptr->dev))
3014 netif_device_detach(vptr->dev);
3016 spin_lock_irqsave(&vptr->lock, flags);
3017 pci_save_state(pdev);
3019 if (vptr->flags & VELOCITY_FLAGS_WOL_ENABLED) {
3020 velocity_get_ip(vptr);
3021 velocity_save_context(vptr, &vptr->context);
3022 velocity_shutdown(vptr);
3023 velocity_set_wol(vptr);
3024 pci_enable_wake(pdev, PCI_D3hot, 1);
3025 pci_set_power_state(pdev, PCI_D3hot);
3027 velocity_save_context(vptr, &vptr->context);
3028 velocity_shutdown(vptr);
3029 pci_disable_device(pdev);
3030 pci_set_power_state(pdev, pci_choose_state(pdev, state));
3033 spin_unlock_irqrestore(&vptr->lock, flags);
3038 * velocity_restore_context - restore registers
3040 * @context: buffer for stored context
3042 * Reload the register configuration from the velocity context
3043 * created by velocity_save_context.
3045 static void velocity_restore_context(struct velocity_info *vptr, struct velocity_context *context)
3047 struct mac_regs __iomem *regs = vptr->mac_regs;
3049 u8 __iomem *ptr = (u8 __iomem *)regs;
3051 for (i = MAC_REG_PAR; i < MAC_REG_CR0_SET; i += 4)
3052 writel(*((u32 *) (context->mac_reg + i)), ptr + i);
3055 for (i = MAC_REG_CR1_SET; i < MAC_REG_CR0_CLR; i++) {
3057 writeb(~(*((u8 *) (context->mac_reg + i))), ptr + i + 4);
3059 writeb(*((u8 *) (context->mac_reg + i)), ptr + i);
3062 for (i = MAC_REG_MAR; i < MAC_REG_IMR; i += 4)
3063 writel(*((u32 *) (context->mac_reg + i)), ptr + i);
3065 for (i = MAC_REG_RDBASE_LO; i < MAC_REG_FIFO_TEST0; i += 4)
3066 writel(*((u32 *) (context->mac_reg + i)), ptr + i);
3068 for (i = MAC_REG_TDCSR_SET; i <= MAC_REG_RDCSR_SET; i++)
3069 writeb(*((u8 *) (context->mac_reg + i)), ptr + i);
3072 static int velocity_resume(struct pci_dev *pdev)
3074 struct net_device *dev = pci_get_drvdata(pdev);
3075 struct velocity_info *vptr = netdev_priv(dev);
3076 unsigned long flags;
3079 if (!netif_running(vptr->dev))
3082 pci_set_power_state(pdev, PCI_D0);
3083 pci_enable_wake(pdev, 0, 0);
3084 pci_restore_state(pdev);
3086 mac_wol_reset(vptr->mac_regs);
3088 spin_lock_irqsave(&vptr->lock, flags);
3089 velocity_restore_context(vptr, &vptr->context);
3090 velocity_init_registers(vptr, VELOCITY_INIT_WOL);
3091 mac_disable_int(vptr->mac_regs);
3093 velocity_tx_srv(vptr);
3095 for (i = 0; i < vptr->tx.numq; i++) {
3096 if (vptr->tx.used[i])
3097 mac_tx_queue_wake(vptr->mac_regs, i);
3100 mac_enable_int(vptr->mac_regs);
3101 spin_unlock_irqrestore(&vptr->lock, flags);
3102 netif_device_attach(vptr->dev);
3109 * Definition for our device driver. The PCI layer interface
3110 * uses this to handle all our card discover and plugging
3112 static struct pci_driver velocity_driver = {
3113 .name = VELOCITY_NAME,
3114 .id_table = velocity_id_table,
3115 .probe = velocity_found1,
3116 .remove = velocity_remove1,
3118 .suspend = velocity_suspend,
3119 .resume = velocity_resume,
3125 * velocity_ethtool_up - pre hook for ethtool
3126 * @dev: network device
3128 * Called before an ethtool operation. We need to make sure the
3129 * chip is out of D3 state before we poke at it.
3131 static int velocity_ethtool_up(struct net_device *dev)
3133 struct velocity_info *vptr = netdev_priv(dev);
3134 if (!netif_running(dev))
3135 pci_set_power_state(vptr->pdev, PCI_D0);
3140 * velocity_ethtool_down - post hook for ethtool
3141 * @dev: network device
3143 * Called after an ethtool operation. Restore the chip back to D3
3144 * state if it isn't running.
3146 static void velocity_ethtool_down(struct net_device *dev)
3148 struct velocity_info *vptr = netdev_priv(dev);
3149 if (!netif_running(dev))
3150 pci_set_power_state(vptr->pdev, PCI_D3hot);
3153 static int velocity_get_settings(struct net_device *dev,
3154 struct ethtool_cmd *cmd)
3156 struct velocity_info *vptr = netdev_priv(dev);
3157 struct mac_regs __iomem *regs = vptr->mac_regs;
3159 status = check_connection_type(vptr->mac_regs);
3161 cmd->supported = SUPPORTED_TP |
3163 SUPPORTED_10baseT_Half |
3164 SUPPORTED_10baseT_Full |
3165 SUPPORTED_100baseT_Half |
3166 SUPPORTED_100baseT_Full |
3167 SUPPORTED_1000baseT_Half |
3168 SUPPORTED_1000baseT_Full;
3170 cmd->advertising = ADVERTISED_TP | ADVERTISED_Autoneg;
3171 if (vptr->options.spd_dpx == SPD_DPX_AUTO) {
3173 ADVERTISED_10baseT_Half |
3174 ADVERTISED_10baseT_Full |
3175 ADVERTISED_100baseT_Half |
3176 ADVERTISED_100baseT_Full |
3177 ADVERTISED_1000baseT_Half |
3178 ADVERTISED_1000baseT_Full;
3180 switch (vptr->options.spd_dpx) {
3181 case SPD_DPX_1000_FULL:
3182 cmd->advertising |= ADVERTISED_1000baseT_Full;
3184 case SPD_DPX_100_HALF:
3185 cmd->advertising |= ADVERTISED_100baseT_Half;
3187 case SPD_DPX_100_FULL:
3188 cmd->advertising |= ADVERTISED_100baseT_Full;
3190 case SPD_DPX_10_HALF:
3191 cmd->advertising |= ADVERTISED_10baseT_Half;
3193 case SPD_DPX_10_FULL:
3194 cmd->advertising |= ADVERTISED_10baseT_Full;
3201 if (status & VELOCITY_SPEED_1000)
3202 ethtool_cmd_speed_set(cmd, SPEED_1000);
3203 else if (status & VELOCITY_SPEED_100)
3204 ethtool_cmd_speed_set(cmd, SPEED_100);
3206 ethtool_cmd_speed_set(cmd, SPEED_10);
3208 cmd->autoneg = (status & VELOCITY_AUTONEG_ENABLE) ? AUTONEG_ENABLE : AUTONEG_DISABLE;
3209 cmd->port = PORT_TP;
3210 cmd->transceiver = XCVR_INTERNAL;
3211 cmd->phy_address = readb(®s->MIIADR) & 0x1F;
3213 if (status & VELOCITY_DUPLEX_FULL)
3214 cmd->duplex = DUPLEX_FULL;
3216 cmd->duplex = DUPLEX_HALF;
3221 static int velocity_set_settings(struct net_device *dev,
3222 struct ethtool_cmd *cmd)
3224 struct velocity_info *vptr = netdev_priv(dev);
3225 u32 speed = ethtool_cmd_speed(cmd);
3230 curr_status = check_connection_type(vptr->mac_regs);
3231 curr_status &= (~VELOCITY_LINK_FAIL);
3233 new_status |= ((cmd->autoneg) ? VELOCITY_AUTONEG_ENABLE : 0);
3234 new_status |= ((speed == SPEED_1000) ? VELOCITY_SPEED_1000 : 0);
3235 new_status |= ((speed == SPEED_100) ? VELOCITY_SPEED_100 : 0);
3236 new_status |= ((speed == SPEED_10) ? VELOCITY_SPEED_10 : 0);
3237 new_status |= ((cmd->duplex == DUPLEX_FULL) ? VELOCITY_DUPLEX_FULL : 0);
3239 if ((new_status & VELOCITY_AUTONEG_ENABLE) &&
3240 (new_status != (curr_status | VELOCITY_AUTONEG_ENABLE))) {
3243 enum speed_opt spd_dpx;
3245 if (new_status & VELOCITY_AUTONEG_ENABLE)
3246 spd_dpx = SPD_DPX_AUTO;
3247 else if ((new_status & VELOCITY_SPEED_1000) &&
3248 (new_status & VELOCITY_DUPLEX_FULL)) {
3249 spd_dpx = SPD_DPX_1000_FULL;
3250 } else if (new_status & VELOCITY_SPEED_100)
3251 spd_dpx = (new_status & VELOCITY_DUPLEX_FULL) ?
3252 SPD_DPX_100_FULL : SPD_DPX_100_HALF;
3253 else if (new_status & VELOCITY_SPEED_10)
3254 spd_dpx = (new_status & VELOCITY_DUPLEX_FULL) ?
3255 SPD_DPX_10_FULL : SPD_DPX_10_HALF;
3259 vptr->options.spd_dpx = spd_dpx;
3261 velocity_set_media_mode(vptr, new_status);
3267 static void velocity_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
3269 struct velocity_info *vptr = netdev_priv(dev);
3270 strlcpy(info->driver, VELOCITY_NAME, sizeof(info->driver));
3271 strlcpy(info->version, VELOCITY_VERSION, sizeof(info->version));
3272 strlcpy(info->bus_info, pci_name(vptr->pdev), sizeof(info->bus_info));
3275 static void velocity_ethtool_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
3277 struct velocity_info *vptr = netdev_priv(dev);
3278 wol->supported = WAKE_PHY | WAKE_MAGIC | WAKE_UCAST | WAKE_ARP;
3279 wol->wolopts |= WAKE_MAGIC;
3281 if (vptr->wol_opts & VELOCITY_WOL_PHY)
3282 wol.wolopts|=WAKE_PHY;
3284 if (vptr->wol_opts & VELOCITY_WOL_UCAST)
3285 wol->wolopts |= WAKE_UCAST;
3286 if (vptr->wol_opts & VELOCITY_WOL_ARP)
3287 wol->wolopts |= WAKE_ARP;
3288 memcpy(&wol->sopass, vptr->wol_passwd, 6);
3291 static int velocity_ethtool_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
3293 struct velocity_info *vptr = netdev_priv(dev);
3295 if (!(wol->wolopts & (WAKE_PHY | WAKE_MAGIC | WAKE_UCAST | WAKE_ARP)))
3297 vptr->wol_opts = VELOCITY_WOL_MAGIC;
3300 if (wol.wolopts & WAKE_PHY) {
3301 vptr->wol_opts|=VELOCITY_WOL_PHY;
3302 vptr->flags |=VELOCITY_FLAGS_WOL_ENABLED;
3306 if (wol->wolopts & WAKE_MAGIC) {
3307 vptr->wol_opts |= VELOCITY_WOL_MAGIC;
3308 vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
3310 if (wol->wolopts & WAKE_UCAST) {
3311 vptr->wol_opts |= VELOCITY_WOL_UCAST;
3312 vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
3314 if (wol->wolopts & WAKE_ARP) {
3315 vptr->wol_opts |= VELOCITY_WOL_ARP;
3316 vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
3318 memcpy(vptr->wol_passwd, wol->sopass, 6);
3322 static u32 velocity_get_msglevel(struct net_device *dev)
3327 static void velocity_set_msglevel(struct net_device *dev, u32 value)
3332 static int get_pending_timer_val(int val)
3334 int mult_bits = val >> 6;
3350 return (val & 0x3f) * mult;
3353 static void set_pending_timer_val(int *val, u32 us)
3359 mult = 1; /* mult with 4 */
3362 if (us >= 0x3f * 4) {
3363 mult = 2; /* mult with 16 */
3366 if (us >= 0x3f * 16) {
3367 mult = 3; /* mult with 64 */
3371 *val = (mult << 6) | ((us >> shift) & 0x3f);
3375 static int velocity_get_coalesce(struct net_device *dev,
3376 struct ethtool_coalesce *ecmd)
3378 struct velocity_info *vptr = netdev_priv(dev);
3380 ecmd->tx_max_coalesced_frames = vptr->options.tx_intsup;
3381 ecmd->rx_max_coalesced_frames = vptr->options.rx_intsup;
3383 ecmd->rx_coalesce_usecs = get_pending_timer_val(vptr->options.rxqueue_timer);
3384 ecmd->tx_coalesce_usecs = get_pending_timer_val(vptr->options.txqueue_timer);
3389 static int velocity_set_coalesce(struct net_device *dev,
3390 struct ethtool_coalesce *ecmd)
3392 struct velocity_info *vptr = netdev_priv(dev);
3393 int max_us = 0x3f * 64;
3394 unsigned long flags;
3397 if (ecmd->tx_coalesce_usecs > max_us)
3399 if (ecmd->rx_coalesce_usecs > max_us)
3402 if (ecmd->tx_max_coalesced_frames > 0xff)
3404 if (ecmd->rx_max_coalesced_frames > 0xff)
3407 vptr->options.rx_intsup = ecmd->rx_max_coalesced_frames;
3408 vptr->options.tx_intsup = ecmd->tx_max_coalesced_frames;
3410 set_pending_timer_val(&vptr->options.rxqueue_timer,
3411 ecmd->rx_coalesce_usecs);
3412 set_pending_timer_val(&vptr->options.txqueue_timer,
3413 ecmd->tx_coalesce_usecs);
3415 /* Setup the interrupt suppression and queue timers */
3416 spin_lock_irqsave(&vptr->lock, flags);
3417 mac_disable_int(vptr->mac_regs);
3418 setup_adaptive_interrupts(vptr);
3419 setup_queue_timers(vptr);
3421 mac_write_int_mask(vptr->int_mask, vptr->mac_regs);
3422 mac_clear_isr(vptr->mac_regs);
3423 mac_enable_int(vptr->mac_regs);
3424 spin_unlock_irqrestore(&vptr->lock, flags);
3429 static const char velocity_gstrings[][ETH_GSTRING_LEN] = {
3448 "tx_ether_collisions",
3452 "rx_mac_control_frames",
3453 "tx_mac_control_frames",
3454 "rx_frame_alignement_errors",
3460 "in_range_length_errors",
3464 static void velocity_get_strings(struct net_device *dev, u32 sset, u8 *data)
3468 memcpy(data, *velocity_gstrings, sizeof(velocity_gstrings));
3473 static int velocity_get_sset_count(struct net_device *dev, int sset)
3477 return ARRAY_SIZE(velocity_gstrings);
3483 static void velocity_get_ethtool_stats(struct net_device *dev,
3484 struct ethtool_stats *stats, u64 *data)
3486 if (netif_running(dev)) {
3487 struct velocity_info *vptr = netdev_priv(dev);
3488 u32 *p = vptr->mib_counter;
3491 spin_lock_irq(&vptr->lock);
3492 velocity_update_hw_mibs(vptr);
3493 spin_unlock_irq(&vptr->lock);
3495 for (i = 0; i < ARRAY_SIZE(velocity_gstrings); i++)
3500 static const struct ethtool_ops velocity_ethtool_ops = {
3501 .get_settings = velocity_get_settings,
3502 .set_settings = velocity_set_settings,
3503 .get_drvinfo = velocity_get_drvinfo,
3504 .get_wol = velocity_ethtool_get_wol,
3505 .set_wol = velocity_ethtool_set_wol,
3506 .get_msglevel = velocity_get_msglevel,
3507 .set_msglevel = velocity_set_msglevel,
3508 .get_link = velocity_get_link,
3509 .get_strings = velocity_get_strings,
3510 .get_sset_count = velocity_get_sset_count,
3511 .get_ethtool_stats = velocity_get_ethtool_stats,
3512 .get_coalesce = velocity_get_coalesce,
3513 .set_coalesce = velocity_set_coalesce,
3514 .begin = velocity_ethtool_up,
3515 .complete = velocity_ethtool_down
3518 #if defined(CONFIG_PM) && defined(CONFIG_INET)
3519 static int velocity_netdev_event(struct notifier_block *nb, unsigned long notification, void *ptr)
3521 struct in_ifaddr *ifa = ptr;
3522 struct net_device *dev = ifa->ifa_dev->dev;
3524 if (dev_net(dev) == &init_net &&
3525 dev->netdev_ops == &velocity_netdev_ops)
3526 velocity_get_ip(netdev_priv(dev));
3531 static struct notifier_block velocity_inetaddr_notifier = {
3532 .notifier_call = velocity_netdev_event,
3535 static void velocity_register_notifier(void)
3537 register_inetaddr_notifier(&velocity_inetaddr_notifier);
3540 static void velocity_unregister_notifier(void)
3542 unregister_inetaddr_notifier(&velocity_inetaddr_notifier);
3547 #define velocity_register_notifier() do {} while (0)
3548 #define velocity_unregister_notifier() do {} while (0)
3550 #endif /* defined(CONFIG_PM) && defined(CONFIG_INET) */
3553 * velocity_init_module - load time function
3555 * Called when the velocity module is loaded. The PCI driver
3556 * is registered with the PCI layer, and in turn will call
3557 * the probe functions for each velocity adapter installed
3560 static int __init velocity_init_module(void)
3564 velocity_register_notifier();
3565 ret = pci_register_driver(&velocity_driver);
3567 velocity_unregister_notifier();
3572 * velocity_cleanup - module unload
3574 * When the velocity hardware is unloaded this function is called.
3575 * It will clean up the notifiers and the unregister the PCI
3576 * driver interface for this hardware. This in turn cleans up
3577 * all discovered interfaces before returning from the function
3579 static void __exit velocity_cleanup_module(void)
3581 velocity_unregister_notifier();
3582 pci_unregister_driver(&velocity_driver);
3585 module_init(velocity_init_module);
3586 module_exit(velocity_cleanup_module);