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");
46 #include <linux/module.h>
47 #include <linux/types.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);
116 * mac_set_cam_mask - Set a CAM mask
117 * @regs: register block for this velocity
118 * @mask: CAM mask to load
120 * Store a new mask into a CAM
122 static void mac_set_cam_mask(struct mac_regs __iomem *regs, u8 *mask)
125 /* Select CAM mask */
126 BYTE_REG_BITS_SET(CAMCR_PS_CAM_MASK, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
128 writeb(CAMADDR_CAMEN, ®s->CAMADDR);
130 for (i = 0; i < 8; i++)
131 writeb(*mask++, &(regs->MARCAM[i]));
134 writeb(0, ®s->CAMADDR);
137 BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
140 static void mac_set_vlan_cam_mask(struct mac_regs __iomem *regs, u8 *mask)
143 /* Select CAM mask */
144 BYTE_REG_BITS_SET(CAMCR_PS_CAM_MASK, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
146 writeb(CAMADDR_CAMEN | CAMADDR_VCAMSL, ®s->CAMADDR);
148 for (i = 0; i < 8; i++)
149 writeb(*mask++, &(regs->MARCAM[i]));
152 writeb(0, ®s->CAMADDR);
155 BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
159 * mac_set_cam - set CAM data
160 * @regs: register block of this velocity
162 * @addr: 2 or 6 bytes of CAM data
164 * Load an address or vlan tag into a CAM
166 static void mac_set_cam(struct mac_regs __iomem *regs, int idx, const u8 *addr)
170 /* Select CAM mask */
171 BYTE_REG_BITS_SET(CAMCR_PS_CAM_DATA, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
175 writeb(CAMADDR_CAMEN | idx, ®s->CAMADDR);
177 for (i = 0; i < 6; i++)
178 writeb(*addr++, &(regs->MARCAM[i]));
180 BYTE_REG_BITS_ON(CAMCR_CAMWR, ®s->CAMCR);
184 writeb(0, ®s->CAMADDR);
187 BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
190 static void mac_set_vlan_cam(struct mac_regs __iomem *regs, int idx,
194 /* Select CAM mask */
195 BYTE_REG_BITS_SET(CAMCR_PS_CAM_DATA, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
199 writeb(CAMADDR_CAMEN | CAMADDR_VCAMSL | idx, ®s->CAMADDR);
200 writew(*((u16 *) addr), ®s->MARCAM[0]);
202 BYTE_REG_BITS_ON(CAMCR_CAMWR, ®s->CAMCR);
206 writeb(0, ®s->CAMADDR);
209 BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
214 * mac_wol_reset - reset WOL after exiting low power
215 * @regs: register block of this velocity
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
221 static void mac_wol_reset(struct mac_regs __iomem *regs)
224 /* Turn off SWPTAG right after leaving power mode */
225 BYTE_REG_BITS_OFF(STICKHW_SWPTAG, ®s->STICKHW);
226 /* clear sticky bits */
227 BYTE_REG_BITS_OFF((STICKHW_DS1 | STICKHW_DS0), ®s->STICKHW);
229 BYTE_REG_BITS_OFF(CHIPGCR_FCGMII, ®s->CHIPGCR);
230 BYTE_REG_BITS_OFF(CHIPGCR_FCMODE, ®s->CHIPGCR);
231 /* disable force PME-enable */
232 writeb(WOLCFG_PMEOVR, ®s->WOLCFGClr);
233 /* disable power-event config bit */
234 writew(0xFFFF, ®s->WOLCRClr);
235 /* clear power status */
236 writew(0xFFFF, ®s->WOLSRClr);
239 static const struct ethtool_ops velocity_ethtool_ops;
242 Define module options
245 MODULE_AUTHOR("VIA Networking Technologies, Inc.");
246 MODULE_LICENSE("GPL");
247 MODULE_DESCRIPTION("VIA Networking Velocity Family Gigabit Ethernet Adapter Driver");
249 #define VELOCITY_PARAM(N, D) \
250 static int N[MAX_UNITS] = OPTION_DEFAULT;\
251 module_param_array(N, int, NULL, 0); \
252 MODULE_PARM_DESC(N, D);
254 #define RX_DESC_MIN 64
255 #define RX_DESC_MAX 255
256 #define RX_DESC_DEF 64
257 VELOCITY_PARAM(RxDescriptors, "Number of receive descriptors");
259 #define TX_DESC_MIN 16
260 #define TX_DESC_MAX 256
261 #define TX_DESC_DEF 64
262 VELOCITY_PARAM(TxDescriptors, "Number of transmit descriptors");
264 #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.
273 VELOCITY_PARAM(rx_thresh, "Receive fifo threshold");
275 #define DMA_LENGTH_MIN 0
276 #define DMA_LENGTH_MAX 7
277 #define DMA_LENGTH_DEF 6
279 /* DMA_length[] is used for controlling the DMA length
286 6: SF(flush till emply)
287 7: SF(flush till emply)
289 VELOCITY_PARAM(DMA_length, "DMA length");
291 #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)
298 VELOCITY_PARAM(IP_byte_align, "Enable IP header dword aligned");
300 #define FLOW_CNTL_DEF 1
301 #define FLOW_CNTL_MIN 1
302 #define FLOW_CNTL_MAX 5
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.
311 VELOCITY_PARAM(flow_control, "Enable flow control ability");
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
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 __devinit *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 __devexit 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 __devinit velocity_set_int_opt(int *opt, int val, int min, int max, int def, char *name, const char *devname)
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);
433 VELOCITY_PRT(MSG_LEVEL_INFO, KERN_INFO "%s: set value of parameter %s to %d\n",
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
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.
452 static void __devinit velocity_set_bool_opt(u32 *opt, int val, int def, u32 flag, char *name, const char *devname)
456 *opt |= (def ? flag : 0);
457 else if (val < 0 || val > 1) {
458 printk(KERN_NOTICE "%s: the value of parameter %s is invalid, the valid range is (0-1)\n",
460 *opt |= (def ? flag : 0);
462 printk(KERN_INFO "%s: set parameter %s to %s\n",
463 devname, name, val ? "TRUE" : "FALSE");
464 *opt |= (val ? flag : 0);
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
474 * Turn the module and command options into a single structure
475 * for the current device
477 static void __devinit velocity_get_options(struct velocity_opt *opts, int index, const char *devname)
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);
485 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);
490 opts->numrx = (opts->numrx & ~3);
494 * velocity_init_cam_filter - initialise CAM
495 * @vptr: velocity to program
497 * Initialize the content addressable memory used for filters. Load
498 * appropriately according to the presence of VLAN
500 static void velocity_init_cam_filter(struct velocity_info *vptr)
502 struct mac_regs __iomem *regs = vptr->mac_regs;
504 /* Turn on MCFG_PQEN, turn off MCFG_RTGOPT */
505 WORD_REG_BITS_SET(MCFG_PQEN, MCFG_RTGOPT, ®s->MCFG);
506 WORD_REG_BITS_ON(MCFG_VIDFR, ®s->MCFG);
508 /* Disable all CAMs */
509 memset(vptr->vCAMmask, 0, sizeof(u8) * 8);
510 memset(vptr->mCAMmask, 0, sizeof(u8) * 8);
511 mac_set_vlan_cam_mask(regs, vptr->vCAMmask);
512 mac_set_cam_mask(regs, vptr->mCAMmask);
516 unsigned int vid, i = 0;
518 if (!vlan_group_get_device(vptr->vlgrp, 0))
519 WORD_REG_BITS_ON(MCFG_RTGOPT, ®s->MCFG);
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)
529 mac_set_vlan_cam_mask(regs, vptr->vCAMmask);
533 static void velocity_vlan_rx_register(struct net_device *dev,
534 struct vlan_group *grp)
536 struct velocity_info *vptr = netdev_priv(dev);
541 static void velocity_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
543 struct velocity_info *vptr = netdev_priv(dev);
545 spin_lock_irq(&vptr->lock);
546 velocity_init_cam_filter(vptr);
547 spin_unlock_irq(&vptr->lock);
550 static void velocity_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
552 struct velocity_info *vptr = netdev_priv(dev);
554 spin_lock_irq(&vptr->lock);
555 vlan_group_set_device(vptr->vlgrp, vid, NULL);
556 velocity_init_cam_filter(vptr);
557 spin_unlock_irq(&vptr->lock);
560 static void velocity_init_rx_ring_indexes(struct velocity_info *vptr)
562 vptr->rx.dirty = vptr->rx.filled = vptr->rx.curr = 0;
566 * velocity_rx_reset - handle a receive reset
567 * @vptr: velocity we are resetting
569 * Reset the ownership and status for the receive ring side.
570 * Hand all the receive queue to the NIC.
572 static void velocity_rx_reset(struct velocity_info *vptr)
575 struct mac_regs __iomem *regs = vptr->mac_regs;
578 velocity_init_rx_ring_indexes(vptr);
581 * Init state, all RD entries belong to the NIC
583 for (i = 0; i < vptr->options.numrx; ++i)
584 vptr->rx.ring[i].rdesc0.len |= OWNED_BY_NIC;
586 writew(vptr->options.numrx, ®s->RBRDU);
587 writel(vptr->rx.pool_dma, ®s->RDBaseLo);
588 writew(0, ®s->RDIdx);
589 writew(vptr->options.numrx - 1, ®s->RDCSize);
593 * velocity_get_opt_media_mode - get media selection
594 * @vptr: velocity adapter
596 * Get the media mode stored in EEPROM or module options and load
597 * mii_status accordingly. The requested link state information
600 static u32 velocity_get_opt_media_mode(struct velocity_info *vptr)
604 switch (vptr->options.spd_dpx) {
606 status = VELOCITY_AUTONEG_ENABLE;
608 case SPD_DPX_100_FULL:
609 status = VELOCITY_SPEED_100 | VELOCITY_DUPLEX_FULL;
611 case SPD_DPX_10_FULL:
612 status = VELOCITY_SPEED_10 | VELOCITY_DUPLEX_FULL;
614 case SPD_DPX_100_HALF:
615 status = VELOCITY_SPEED_100;
617 case SPD_DPX_10_HALF:
618 status = VELOCITY_SPEED_10;
621 vptr->mii_status = status;
626 * safe_disable_mii_autopoll - autopoll off
627 * @regs: velocity registers
629 * Turn off the autopoll and wait for it to disable on the chip
631 static void safe_disable_mii_autopoll(struct mac_regs __iomem *regs)
636 writeb(0, ®s->MIICR);
637 for (ww = 0; ww < W_MAX_TIMEOUT; ww++) {
639 if (BYTE_REG_BITS_IS_ON(MIISR_MIDLE, ®s->MIISR))
645 * enable_mii_autopoll - turn on autopolling
646 * @regs: velocity registers
648 * Enable the MII link status autopoll feature on the Velocity
649 * hardware. Wait for it to enable.
651 static void enable_mii_autopoll(struct mac_regs __iomem *regs)
655 writeb(0, &(regs->MIICR));
656 writeb(MIIADR_SWMPL, ®s->MIIADR);
658 for (ii = 0; ii < W_MAX_TIMEOUT; ii++) {
660 if (BYTE_REG_BITS_IS_ON(MIISR_MIDLE, ®s->MIISR))
664 writeb(MIICR_MAUTO, ®s->MIICR);
666 for (ii = 0; ii < W_MAX_TIMEOUT; ii++) {
668 if (!BYTE_REG_BITS_IS_ON(MIISR_MIDLE, ®s->MIISR))
675 * velocity_mii_read - read MII data
676 * @regs: velocity registers
677 * @index: MII register index
678 * @data: buffer for received data
680 * Perform a single read of an MII 16bit register. Returns zero
681 * on success or -ETIMEDOUT if the PHY did not respond.
683 static int velocity_mii_read(struct mac_regs __iomem *regs, u8 index, u16 *data)
688 * Disable MIICR_MAUTO, so that mii addr can be set normally
690 safe_disable_mii_autopoll(regs);
692 writeb(index, ®s->MIIADR);
694 BYTE_REG_BITS_ON(MIICR_RCMD, ®s->MIICR);
696 for (ww = 0; ww < W_MAX_TIMEOUT; ww++) {
697 if (!(readb(®s->MIICR) & MIICR_RCMD))
701 *data = readw(®s->MIIDATA);
703 enable_mii_autopoll(regs);
704 if (ww == W_MAX_TIMEOUT)
711 * mii_check_media_mode - check media state
712 * @regs: velocity registers
714 * Check the current MII status and determine the link status
717 static u32 mii_check_media_mode(struct mac_regs __iomem *regs)
722 if (!MII_REG_BITS_IS_ON(BMSR_LNK, MII_REG_BMSR, regs))
723 status |= VELOCITY_LINK_FAIL;
725 if (MII_REG_BITS_IS_ON(G1000CR_1000FD, MII_REG_G1000CR, regs))
726 status |= VELOCITY_SPEED_1000 | VELOCITY_DUPLEX_FULL;
727 else if (MII_REG_BITS_IS_ON(G1000CR_1000, MII_REG_G1000CR, regs))
728 status |= (VELOCITY_SPEED_1000);
730 velocity_mii_read(regs, MII_REG_ANAR, &ANAR);
731 if (ANAR & ANAR_TXFD)
732 status |= (VELOCITY_SPEED_100 | VELOCITY_DUPLEX_FULL);
733 else if (ANAR & ANAR_TX)
734 status |= VELOCITY_SPEED_100;
735 else if (ANAR & ANAR_10FD)
736 status |= (VELOCITY_SPEED_10 | VELOCITY_DUPLEX_FULL);
738 status |= (VELOCITY_SPEED_10);
741 if (MII_REG_BITS_IS_ON(BMCR_AUTO, MII_REG_BMCR, regs)) {
742 velocity_mii_read(regs, MII_REG_ANAR, &ANAR);
743 if ((ANAR & (ANAR_TXFD | ANAR_TX | ANAR_10FD | ANAR_10))
744 == (ANAR_TXFD | ANAR_TX | ANAR_10FD | ANAR_10)) {
745 if (MII_REG_BITS_IS_ON(G1000CR_1000 | G1000CR_1000FD, MII_REG_G1000CR, regs))
746 status |= VELOCITY_AUTONEG_ENABLE;
754 * velocity_mii_write - write MII data
755 * @regs: velocity registers
756 * @index: MII register index
757 * @data: 16bit data for the MII register
759 * Perform a single write to an MII 16bit register. Returns zero
760 * on success or -ETIMEDOUT if the PHY did not respond.
762 static int velocity_mii_write(struct mac_regs __iomem *regs, u8 mii_addr, u16 data)
767 * Disable MIICR_MAUTO, so that mii addr can be set normally
769 safe_disable_mii_autopoll(regs);
772 writeb(mii_addr, ®s->MIIADR);
774 writew(data, ®s->MIIDATA);
776 /* turn on MIICR_WCMD */
777 BYTE_REG_BITS_ON(MIICR_WCMD, ®s->MIICR);
779 /* W_MAX_TIMEOUT is the timeout period */
780 for (ww = 0; ww < W_MAX_TIMEOUT; ww++) {
782 if (!(readb(®s->MIICR) & MIICR_WCMD))
785 enable_mii_autopoll(regs);
787 if (ww == W_MAX_TIMEOUT)
793 * set_mii_flow_control - flow control setup
794 * @vptr: velocity interface
796 * Set up the flow control on this interface according to
797 * the supplied user/eeprom options.
799 static void set_mii_flow_control(struct velocity_info *vptr)
801 /*Enable or Disable PAUSE in ANAR */
802 switch (vptr->options.flow_cntl) {
804 MII_REG_BITS_OFF(ANAR_PAUSE, MII_REG_ANAR, vptr->mac_regs);
805 MII_REG_BITS_ON(ANAR_ASMDIR, MII_REG_ANAR, vptr->mac_regs);
809 MII_REG_BITS_ON(ANAR_PAUSE, MII_REG_ANAR, vptr->mac_regs);
810 MII_REG_BITS_ON(ANAR_ASMDIR, MII_REG_ANAR, vptr->mac_regs);
813 case FLOW_CNTL_TX_RX:
814 MII_REG_BITS_ON(ANAR_PAUSE, MII_REG_ANAR, vptr->mac_regs);
815 MII_REG_BITS_ON(ANAR_ASMDIR, MII_REG_ANAR, vptr->mac_regs);
818 case FLOW_CNTL_DISABLE:
819 MII_REG_BITS_OFF(ANAR_PAUSE, MII_REG_ANAR, vptr->mac_regs);
820 MII_REG_BITS_OFF(ANAR_ASMDIR, MII_REG_ANAR, vptr->mac_regs);
828 * mii_set_auto_on - autonegotiate on
831 * Enable autonegotation on this interface
833 static void mii_set_auto_on(struct velocity_info *vptr)
835 if (MII_REG_BITS_IS_ON(BMCR_AUTO, MII_REG_BMCR, vptr->mac_regs))
836 MII_REG_BITS_ON(BMCR_REAUTO, MII_REG_BMCR, vptr->mac_regs);
838 MII_REG_BITS_ON(BMCR_AUTO, MII_REG_BMCR, vptr->mac_regs);
841 static u32 check_connection_type(struct mac_regs __iomem *regs)
846 PHYSR0 = readb(®s->PHYSR0);
849 if (!(PHYSR0 & PHYSR0_LINKGD))
850 status|=VELOCITY_LINK_FAIL;
853 if (PHYSR0 & PHYSR0_FDPX)
854 status |= VELOCITY_DUPLEX_FULL;
856 if (PHYSR0 & PHYSR0_SPDG)
857 status |= VELOCITY_SPEED_1000;
858 else if (PHYSR0 & PHYSR0_SPD10)
859 status |= VELOCITY_SPEED_10;
861 status |= VELOCITY_SPEED_100;
863 if (MII_REG_BITS_IS_ON(BMCR_AUTO, MII_REG_BMCR, regs)) {
864 velocity_mii_read(regs, MII_REG_ANAR, &ANAR);
865 if ((ANAR & (ANAR_TXFD | ANAR_TX | ANAR_10FD | ANAR_10))
866 == (ANAR_TXFD | ANAR_TX | ANAR_10FD | ANAR_10)) {
867 if (MII_REG_BITS_IS_ON(G1000CR_1000 | G1000CR_1000FD, MII_REG_G1000CR, regs))
868 status |= VELOCITY_AUTONEG_ENABLE;
878 * velocity_set_media_mode - set media mode
879 * @mii_status: old MII link state
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.
885 static int velocity_set_media_mode(struct velocity_info *vptr, u32 mii_status)
888 struct mac_regs __iomem *regs = vptr->mac_regs;
890 vptr->mii_status = mii_check_media_mode(vptr->mac_regs);
891 curr_status = vptr->mii_status & (~VELOCITY_LINK_FAIL);
893 /* Set mii link status */
894 set_mii_flow_control(vptr);
897 Check if new status is consisent with current status
898 if (((mii_status & curr_status) & VELOCITY_AUTONEG_ENABLE) ||
899 (mii_status==curr_status)) {
900 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");
907 if (PHYID_GET_PHY_ID(vptr->phy_id) == PHYID_CICADA_CS8201)
908 MII_REG_BITS_ON(AUXCR_MDPPS, MII_REG_AUXCR, vptr->mac_regs);
911 * If connection type is AUTO
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, ®s->CHIPGCR);
917 /* set duplex mode of MAC according to duplex mode of MII */
918 MII_REG_BITS_ON(ANAR_TXFD | ANAR_TX | ANAR_10FD | ANAR_10, MII_REG_ANAR, vptr->mac_regs);
919 MII_REG_BITS_ON(G1000CR_1000FD | G1000CR_1000, MII_REG_G1000CR, vptr->mac_regs);
920 MII_REG_BITS_ON(BMCR_SPEED1G, MII_REG_BMCR, vptr->mac_regs);
922 /* enable AUTO-NEGO mode */
923 mii_set_auto_on(vptr);
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
935 /* set force MAC mode bit */
936 BYTE_REG_BITS_ON(CHIPGCR_FCMODE, ®s->CHIPGCR);
938 CHIPGCR = readb(®s->CHIPGCR);
939 CHIPGCR &= ~CHIPGCR_FCGMII;
941 if (mii_status & VELOCITY_DUPLEX_FULL) {
942 CHIPGCR |= CHIPGCR_FCFDX;
943 writeb(CHIPGCR, ®s->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, ®s->TCR);
948 CHIPGCR &= ~CHIPGCR_FCFDX;
949 VELOCITY_PRT(MSG_LEVEL_INFO, "set Velocity to forced half mode\n");
950 writeb(CHIPGCR, ®s->CHIPGCR);
951 if (vptr->rev_id < REV_ID_VT3216_A0)
952 BYTE_REG_BITS_ON(TCR_TB2BDIS, ®s->TCR);
955 MII_REG_BITS_OFF(G1000CR_1000FD | G1000CR_1000, MII_REG_G1000CR, vptr->mac_regs);
957 if (!(mii_status & VELOCITY_DUPLEX_FULL) && (mii_status & VELOCITY_SPEED_10))
958 BYTE_REG_BITS_OFF(TESTCFG_HBDIS, ®s->TESTCFG);
960 BYTE_REG_BITS_ON(TESTCFG_HBDIS, ®s->TESTCFG);
962 /* MII_REG_BITS_OFF(BMCR_SPEED1G, MII_REG_BMCR, vptr->mac_regs); */
963 velocity_mii_read(vptr->mac_regs, MII_REG_ANAR, &ANAR);
964 ANAR &= (~(ANAR_TXFD | ANAR_TX | ANAR_10FD | ANAR_10));
965 if (mii_status & VELOCITY_SPEED_100) {
966 if (mii_status & VELOCITY_DUPLEX_FULL)
971 if (mii_status & VELOCITY_DUPLEX_FULL)
976 velocity_mii_write(vptr->mac_regs, MII_REG_ANAR, ANAR);
977 /* enable AUTO-NEGO mode */
978 mii_set_auto_on(vptr);
979 /* MII_REG_BITS_ON(BMCR_AUTO, MII_REG_BMCR, vptr->mac_regs); */
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;
987 * velocity_print_link_status - link status reporting
988 * @vptr: velocity to report on
990 * Turn the link status of the velocity card into a kernel log
991 * description of the new link state, detailing speed and duplex
994 static void velocity_print_link_status(struct velocity_info *vptr)
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);
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");
1007 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 10M bps");
1009 if (vptr->mii_status & VELOCITY_DUPLEX_FULL)
1010 VELOCITY_PRT(MSG_LEVEL_INFO, " full duplex\n");
1012 VELOCITY_PRT(MSG_LEVEL_INFO, " half duplex\n");
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");
1019 case SPD_DPX_100_FULL:
1020 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 100M bps full duplex\n");
1022 case SPD_DPX_10_HALF:
1023 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 10M bps half duplex\n");
1025 case SPD_DPX_10_FULL:
1026 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 10M bps full duplex\n");
1035 * enable_flow_control_ability - flow control
1036 * @vptr: veloity to configure
1038 * Set up flow control according to the flow control options
1039 * determined by the eeprom/configuration.
1041 static void enable_flow_control_ability(struct velocity_info *vptr)
1044 struct mac_regs __iomem *regs = vptr->mac_regs;
1046 switch (vptr->options.flow_cntl) {
1048 case FLOW_CNTL_DEFAULT:
1049 if (BYTE_REG_BITS_IS_ON(PHYSR0_RXFLC, ®s->PHYSR0))
1050 writel(CR0_FDXRFCEN, ®s->CR0Set);
1052 writel(CR0_FDXRFCEN, ®s->CR0Clr);
1054 if (BYTE_REG_BITS_IS_ON(PHYSR0_TXFLC, ®s->PHYSR0))
1055 writel(CR0_FDXTFCEN, ®s->CR0Set);
1057 writel(CR0_FDXTFCEN, ®s->CR0Clr);
1061 writel(CR0_FDXTFCEN, ®s->CR0Set);
1062 writel(CR0_FDXRFCEN, ®s->CR0Clr);
1066 writel(CR0_FDXRFCEN, ®s->CR0Set);
1067 writel(CR0_FDXTFCEN, ®s->CR0Clr);
1070 case FLOW_CNTL_TX_RX:
1071 writel(CR0_FDXTFCEN, ®s->CR0Set);
1072 writel(CR0_FDXRFCEN, ®s->CR0Set);
1075 case FLOW_CNTL_DISABLE:
1076 writel(CR0_FDXRFCEN, ®s->CR0Clr);
1077 writel(CR0_FDXTFCEN, ®s->CR0Clr);
1087 * velocity_soft_reset - soft reset
1088 * @vptr: velocity to reset
1090 * Kick off a soft reset of the velocity adapter and then poll
1091 * until the reset sequence has completed before returning.
1093 static int velocity_soft_reset(struct velocity_info *vptr)
1095 struct mac_regs __iomem *regs = vptr->mac_regs;
1098 writel(CR0_SFRST, ®s->CR0Set);
1100 for (i = 0; i < W_MAX_TIMEOUT; i++) {
1102 if (!DWORD_REG_BITS_IS_ON(CR0_SFRST, ®s->CR0Set))
1106 if (i == W_MAX_TIMEOUT) {
1107 writel(CR0_FORSRST, ®s->CR0Set);
1108 /* FIXME: PCI POSTING */
1116 * velocity_set_multi - filter list change callback
1117 * @dev: network device
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
1123 static void velocity_set_multi(struct net_device *dev)
1125 struct velocity_info *vptr = netdev_priv(dev);
1126 struct mac_regs __iomem *regs = vptr->mac_regs;
1129 struct dev_mc_list *mclist;
1131 if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */
1132 writel(0xffffffff, ®s->MARCAM[0]);
1133 writel(0xffffffff, ®s->MARCAM[4]);
1134 rx_mode = (RCR_AM | RCR_AB | RCR_PROM);
1135 } else if ((netdev_mc_count(dev) > vptr->multicast_limit) ||
1136 (dev->flags & IFF_ALLMULTI)) {
1137 writel(0xffffffff, ®s->MARCAM[0]);
1138 writel(0xffffffff, ®s->MARCAM[4]);
1139 rx_mode = (RCR_AM | RCR_AB);
1141 int offset = MCAM_SIZE - vptr->multicast_limit;
1142 mac_get_cam_mask(regs, vptr->mCAMmask);
1144 for (i = 0, mclist = dev->mc_list;
1145 mclist && i < netdev_mc_count(dev);
1146 i++, mclist = mclist->next) {
1147 mac_set_cam(regs, i + offset, mclist->dmi_addr);
1148 vptr->mCAMmask[(offset + i) / 8] |= 1 << ((offset + i) & 7);
1151 mac_set_cam_mask(regs, vptr->mCAMmask);
1152 rx_mode = RCR_AM | RCR_AB | RCR_AP;
1154 if (dev->mtu > 1500)
1157 BYTE_REG_BITS_ON(rx_mode, ®s->RCR);
1162 * MII access , media link mode setting functions
1166 * mii_init - set up MII
1167 * @vptr: velocity adapter
1168 * @mii_status: links tatus
1170 * Set up the PHY for the current link state.
1172 static void mii_init(struct velocity_info *vptr, u32 mii_status)
1176 switch (PHYID_GET_PHY_ID(vptr->phy_id)) {
1177 case PHYID_CICADA_CS8201:
1179 * Reset to hardware default
1181 MII_REG_BITS_OFF((ANAR_ASMDIR | ANAR_PAUSE), MII_REG_ANAR, vptr->mac_regs);
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.
1187 if (vptr->mii_status & VELOCITY_DUPLEX_FULL)
1188 MII_REG_BITS_ON(TCSR_ECHODIS, MII_REG_TCSR, vptr->mac_regs);
1190 MII_REG_BITS_OFF(TCSR_ECHODIS, MII_REG_TCSR, vptr->mac_regs);
1192 * Turn on Link/Activity LED enable bit for CIS8201
1194 MII_REG_BITS_ON(PLED_LALBE, MII_REG_PLED, vptr->mac_regs);
1196 case PHYID_VT3216_32BIT:
1197 case PHYID_VT3216_64BIT:
1199 * Reset to hardware default
1201 MII_REG_BITS_ON((ANAR_ASMDIR | ANAR_PAUSE), MII_REG_ANAR, vptr->mac_regs);
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
1207 if (vptr->mii_status & VELOCITY_DUPLEX_FULL)
1208 MII_REG_BITS_ON(TCSR_ECHODIS, MII_REG_TCSR, vptr->mac_regs);
1210 MII_REG_BITS_OFF(TCSR_ECHODIS, MII_REG_TCSR, vptr->mac_regs);
1213 case PHYID_MARVELL_1000:
1214 case PHYID_MARVELL_1000S:
1216 * Assert CRS on Transmit
1218 MII_REG_BITS_ON(PSCR_ACRSTX, MII_REG_PSCR, vptr->mac_regs);
1220 * Reset to hardware default
1222 MII_REG_BITS_ON((ANAR_ASMDIR | ANAR_PAUSE), MII_REG_ANAR, vptr->mac_regs);
1227 velocity_mii_read(vptr->mac_regs, MII_REG_BMCR, &BMCR);
1228 if (BMCR & BMCR_ISO) {
1230 velocity_mii_write(vptr->mac_regs, MII_REG_BMCR, BMCR);
1235 * setup_queue_timers - Setup interrupt timers
1237 * Setup interrupt frequency during suppression (timeout if the frame
1238 * count isn't filled).
1240 static void setup_queue_timers(struct velocity_info *vptr)
1242 /* Only for newer revisions */
1243 if (vptr->rev_id >= REV_ID_VT3216_A0) {
1244 u8 txqueue_timer = 0;
1245 u8 rxqueue_timer = 0;
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;
1253 writeb(txqueue_timer, &vptr->mac_regs->TQETMR);
1254 writeb(rxqueue_timer, &vptr->mac_regs->RQETMR);
1258 * setup_adaptive_interrupts - Setup interrupt suppression
1260 * @vptr velocity adapter
1262 * The velocity is able to suppress interrupt during high interrupt load.
1263 * This function turns on that feature.
1265 static void setup_adaptive_interrupts(struct velocity_info *vptr)
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;
1271 /* Setup default interrupt mask (will be changed below) */
1272 vptr->int_mask = INT_MASK_DEF;
1274 /* Set Tx Interrupt Suppression Threshold */
1275 writeb(CAMCR_PS0, ®s->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, ®s->ISRCTL);
1281 writew(ISRCTL_TSUPDIS, ®s->ISRCTL);
1283 /* Set Rx Interrupt Suppression Threshold */
1284 writeb(CAMCR_PS1, ®s->CAMCR);
1285 if (rx_intsup != 0) {
1286 vptr->int_mask &= ~ISR_PRXI;
1287 writew(rx_intsup, ®s->ISRCTL);
1289 writew(ISRCTL_RSUPDIS, ®s->ISRCTL);
1291 /* Select page to interrupt hold timer */
1292 writeb(0, ®s->CAMCR);
1296 * velocity_init_registers - initialise MAC registers
1297 * @vptr: velocity to init
1298 * @type: type of initialisation (hot or cold)
1300 * Initialise the MAC on a reset or on first set up on the
1303 static void velocity_init_registers(struct velocity_info *vptr,
1304 enum velocity_init_type type)
1306 struct mac_regs __iomem *regs = vptr->mac_regs;
1309 mac_wol_reset(regs);
1312 case VELOCITY_INIT_RESET:
1313 case VELOCITY_INIT_WOL:
1315 netif_stop_queue(vptr->dev);
1318 * Reset RX to prevent RX pointer not on the 4X location
1320 velocity_rx_reset(vptr);
1321 mac_rx_queue_run(regs);
1322 mac_rx_queue_wake(regs);
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);
1331 enable_flow_control_ability(vptr);
1333 mac_clear_isr(regs);
1334 writel(CR0_STOP, ®s->CR0Clr);
1335 writel((CR0_DPOLL | CR0_TXON | CR0_RXON | CR0_STRT),
1340 case VELOCITY_INIT_COLD:
1345 velocity_soft_reset(vptr);
1348 mac_eeprom_reload(regs);
1349 for (i = 0; i < 6; i++)
1350 writeb(vptr->dev->dev_addr[i], &(regs->PAR[i]));
1353 * clear Pre_ACPI bit.
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);
1359 writeb(WOLCFG_SAM | WOLCFG_SAB, ®s->WOLCFGSet);
1361 * Back off algorithm use original IEEE standard
1363 BYTE_REG_BITS_SET(CFGB_OFSET, (CFGB_CRANDOM | CFGB_CAP | CFGB_MBA | CFGB_BAKOPT), ®s->CFGB);
1368 velocity_init_cam_filter(vptr);
1371 * Set packet filter: Receive directed and broadcast address
1373 velocity_set_multi(vptr->dev);
1376 * Enable MII auto-polling
1378 enable_mii_autopoll(regs);
1380 setup_adaptive_interrupts(vptr);
1382 writel(vptr->rx.pool_dma, ®s->RDBaseLo);
1383 writew(vptr->options.numrx - 1, ®s->RDCSize);
1384 mac_rx_queue_run(regs);
1385 mac_rx_queue_wake(regs);
1387 writew(vptr->options.numtx - 1, ®s->TDCSize);
1389 for (i = 0; i < vptr->tx.numq; i++) {
1390 writel(vptr->tx.pool_dma[i], ®s->TDBaseLo[i]);
1391 mac_tx_queue_run(regs, i);
1394 init_flow_control_register(vptr);
1396 writel(CR0_STOP, ®s->CR0Clr);
1397 writel((CR0_DPOLL | CR0_TXON | CR0_RXON | CR0_STRT), ®s->CR0Set);
1399 mii_status = velocity_get_opt_media_mode(vptr);
1400 netif_stop_queue(vptr->dev);
1402 mii_init(vptr, mii_status);
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);
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);
1418 static void velocity_give_many_rx_descs(struct velocity_info *vptr)
1420 struct mac_regs __iomem *regs = vptr->mac_regs;
1421 int avail, dirty, unusable;
1424 * RD number must be equal to 4X per hardware spec
1425 * (programming guide rev 1.20, p.13)
1427 if (vptr->rx.filled < 4)
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;
1439 writew(vptr->rx.filled & 0xfffc, ®s->RBRDU);
1440 vptr->rx.filled = unusable;
1444 * velocity_init_dma_rings - set up DMA rings
1445 * @vptr: Velocity to set up
1447 * Allocate PCI mapped DMA rings for the receive and transmit layer
1450 static int velocity_init_dma_rings(struct velocity_info *vptr)
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;
1461 * Allocate all RD/TD rings a single pool.
1463 * pci_alloc_consistent() fulfills the requirement for 64 bytes
1466 pool = pci_alloc_consistent(pdev, tx_ring_size * vptr->tx.numq +
1467 rx_ring_size, &pool_dma);
1469 dev_err(&pdev->dev, "%s : DMA memory allocation failed.\n",
1474 vptr->rx.ring = pool;
1475 vptr->rx.pool_dma = pool_dma;
1477 pool += rx_ring_size;
1478 pool_dma += rx_ring_size;
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;
1490 static void velocity_set_rxbufsize(struct velocity_info *vptr, int mtu)
1492 vptr->rx.buf_sz = (mtu <= ETH_DATA_LEN) ? PKT_BUF_SZ : mtu + 32;
1496 * velocity_alloc_rx_buf - allocate aligned receive buffer
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.
1505 static int velocity_alloc_rx_buf(struct velocity_info *vptr, int idx)
1507 struct rx_desc *rd = &(vptr->rx.ring[idx]);
1508 struct velocity_rd_info *rd_info = &(vptr->rx.info[idx]);
1510 rd_info->skb = dev_alloc_skb(vptr->rx.buf_sz + 64);
1511 if (rd_info->skb == NULL)
1515 * Do the gymnastics to get the buffer head for data at
1518 skb_reserve(rd_info->skb,
1519 64 - ((unsigned long) rd_info->skb->data & 63));
1520 rd_info->skb_dma = pci_map_single(vptr->pdev, rd_info->skb->data,
1521 vptr->rx.buf_sz, PCI_DMA_FROMDEVICE);
1524 * Fill in the descriptor to match
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);
1535 static int velocity_rx_refill(struct velocity_info *vptr)
1537 int dirty = vptr->rx.dirty, done = 0;
1540 struct rx_desc *rd = vptr->rx.ring + dirty;
1542 /* Fine for an all zero Rx desc at init time as well */
1543 if (rd->rdesc0.len & OWNED_BY_NIC)
1546 if (!vptr->rx.info[dirty].skb) {
1547 if (velocity_alloc_rx_buf(vptr, dirty) < 0)
1551 dirty = (dirty < vptr->options.numrx - 1) ? dirty + 1 : 0;
1552 } while (dirty != vptr->rx.curr);
1555 vptr->rx.dirty = dirty;
1556 vptr->rx.filled += done;
1563 * velocity_free_rd_ring - free receive ring
1564 * @vptr: velocity to clean up
1566 * Free the receive buffers for each ring slot and any
1567 * attached socket buffers that need to go away.
1569 static void velocity_free_rd_ring(struct velocity_info *vptr)
1573 if (vptr->rx.info == NULL)
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;
1580 memset(rd, 0, sizeof(*rd));
1584 pci_unmap_single(vptr->pdev, rd_info->skb_dma, vptr->rx.buf_sz,
1585 PCI_DMA_FROMDEVICE);
1586 rd_info->skb_dma = 0;
1588 dev_kfree_skb(rd_info->skb);
1589 rd_info->skb = NULL;
1592 kfree(vptr->rx.info);
1593 vptr->rx.info = NULL;
1599 * velocity_init_rd_ring - set up receive ring
1600 * @vptr: velocity to configure
1602 * Allocate and set up the receive buffers for each ring slot and
1603 * assign them to the network adapter.
1605 static int velocity_init_rd_ring(struct velocity_info *vptr)
1609 vptr->rx.info = kcalloc(vptr->options.numrx,
1610 sizeof(struct velocity_rd_info), GFP_KERNEL);
1614 velocity_init_rx_ring_indexes(vptr);
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);
1629 * velocity_init_td_ring - set up transmit ring
1632 * Set up the transmit ring and chain the ring pointers together.
1633 * Returns zero on success or a negative posix errno code for
1636 static int velocity_init_td_ring(struct velocity_info *vptr)
1640 /* Init the TD ring entries */
1641 for (j = 0; j < vptr->tx.numq; j++) {
1643 vptr->tx.infos[j] = kcalloc(vptr->options.numtx,
1644 sizeof(struct velocity_td_info),
1646 if (!vptr->tx.infos[j]) {
1648 kfree(vptr->tx.infos[j]);
1652 vptr->tx.tail[j] = vptr->tx.curr[j] = vptr->tx.used[j] = 0;
1658 * velocity_free_dma_rings - free PCI ring pointers
1659 * @vptr: Velocity to free from
1661 * Clean up the PCI ring buffers allocated to this velocity.
1663 static void velocity_free_dma_rings(struct velocity_info *vptr)
1665 const int size = vptr->options.numrx * sizeof(struct rx_desc) +
1666 vptr->options.numtx * sizeof(struct tx_desc) * vptr->tx.numq;
1668 pci_free_consistent(vptr->pdev, size, vptr->rx.ring, vptr->rx.pool_dma);
1672 static int velocity_init_rings(struct velocity_info *vptr, int mtu)
1676 velocity_set_rxbufsize(vptr, mtu);
1678 ret = velocity_init_dma_rings(vptr);
1682 ret = velocity_init_rd_ring(vptr);
1684 goto err_free_dma_rings_0;
1686 ret = velocity_init_td_ring(vptr);
1688 goto err_free_rd_ring_1;
1693 velocity_free_rd_ring(vptr);
1694 err_free_dma_rings_0:
1695 velocity_free_dma_rings(vptr);
1700 * velocity_free_tx_buf - free transmit buffer
1704 * Release an transmit buffer. If the buffer was preallocated then
1705 * recycle it, if not then unmap the buffer.
1707 static void velocity_free_tx_buf(struct velocity_info *vptr,
1708 struct velocity_td_info *tdinfo, struct tx_desc *td)
1710 struct sk_buff *skb = tdinfo->skb;
1713 * Don't unmap the pre-allocated tx_bufs
1715 if (tdinfo->skb_dma) {
1718 for (i = 0; i < tdinfo->nskb_dma; i++) {
1719 size_t pktlen = max_t(size_t, skb->len, ETH_ZLEN);
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);
1726 pci_unmap_single(vptr->pdev, tdinfo->skb_dma[i],
1727 le16_to_cpu(pktlen), PCI_DMA_TODEVICE);
1730 dev_kfree_skb_irq(skb);
1736 * FIXME: could we merge this with velocity_free_tx_buf ?
1738 static void velocity_free_td_ring_entry(struct velocity_info *vptr,
1741 struct velocity_td_info *td_info = &(vptr->tx.infos[q][n]);
1744 if (td_info == NULL)
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;
1755 dev_kfree_skb(td_info->skb);
1756 td_info->skb = NULL;
1761 * velocity_free_td_ring - free td ring
1764 * Free up the transmit ring for this particular velocity adapter.
1765 * We free the ring contents but not the ring itself.
1767 static void velocity_free_td_ring(struct velocity_info *vptr)
1771 for (j = 0; j < vptr->tx.numq; j++) {
1772 if (vptr->tx.infos[j] == NULL)
1774 for (i = 0; i < vptr->options.numtx; i++)
1775 velocity_free_td_ring_entry(vptr, j, i);
1777 kfree(vptr->tx.infos[j]);
1778 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
1884 * Scan the queues looking for transmitted packets that
1885 * we can complete and clean up. Update any statistics as
1888 static int velocity_tx_srv(struct velocity_info *vptr, u32 status)
1895 struct velocity_td_info *tdinfo;
1896 struct net_device_stats *stats = &vptr->dev->stats;
1898 for (qnum = 0; qnum < vptr->tx.numq; qnum++) {
1899 for (idx = vptr->tx.tail[qnum]; vptr->tx.used[qnum] > 0;
1900 idx = (idx + 1) % vptr->options.numtx) {
1905 td = &(vptr->tx.rings[qnum][idx]);
1906 tdinfo = &(vptr->tx.infos[qnum][idx]);
1908 if (td->tdesc0.len & OWNED_BY_NIC)
1914 if (td->tdesc0.TSR & TSR0_TERR) {
1916 stats->tx_dropped++;
1917 if (td->tdesc0.TSR & TSR0_CDH)
1918 stats->tx_heartbeat_errors++;
1919 if (td->tdesc0.TSR & TSR0_CRS)
1920 stats->tx_carrier_errors++;
1921 if (td->tdesc0.TSR & TSR0_ABT)
1922 stats->tx_aborted_errors++;
1923 if (td->tdesc0.TSR & TSR0_OWC)
1924 stats->tx_window_errors++;
1926 stats->tx_packets++;
1927 stats->tx_bytes += tdinfo->skb->len;
1929 velocity_free_tx_buf(vptr, tdinfo, td);
1930 vptr->tx.used[qnum]--;
1932 vptr->tx.tail[qnum] = idx;
1934 if (AVAIL_TD(vptr, qnum) < 1)
1938 * Look to see if we should kick the transmit network
1939 * layer for more work.
1941 if (netif_queue_stopped(vptr->dev) && (full == 0) &&
1942 (!(vptr->mii_status & VELOCITY_LINK_FAIL))) {
1943 netif_wake_queue(vptr->dev);
1949 * velocity_rx_csum - checksum process
1950 * @rd: receive packet descriptor
1951 * @skb: network layer packet buffer
1953 * Process the status bits for the received packet and determine
1954 * if the checksum was computed and verified by the hardware
1956 static inline void velocity_rx_csum(struct rx_desc *rd, struct sk_buff *skb)
1958 skb->ip_summed = CHECKSUM_NONE;
1960 if (rd->rdesc1.CSM & CSM_IPKT) {
1961 if (rd->rdesc1.CSM & CSM_IPOK) {
1962 if ((rd->rdesc1.CSM & CSM_TCPKT) ||
1963 (rd->rdesc1.CSM & CSM_UDPKT)) {
1964 if (!(rd->rdesc1.CSM & CSM_TUPOK))
1967 skb->ip_summed = CHECKSUM_UNNECESSARY;
1973 * velocity_rx_copy - in place Rx copy for small packets
1974 * @rx_skb: network layer packet buffer candidate
1975 * @pkt_size: received data size
1976 * @rd: receive packet descriptor
1977 * @dev: network device
1979 * Replace the current skb that is scheduled for Rx processing by a
1980 * shorter, immediatly allocated skb, if the received packet is small
1981 * enough. This function returns a negative value if the received
1982 * packet is too big or if memory is exhausted.
1984 static int velocity_rx_copy(struct sk_buff **rx_skb, int pkt_size,
1985 struct velocity_info *vptr)
1988 if (pkt_size < rx_copybreak) {
1989 struct sk_buff *new_skb;
1991 new_skb = netdev_alloc_skb_ip_align(vptr->dev, pkt_size);
1993 new_skb->ip_summed = rx_skb[0]->ip_summed;
1994 skb_copy_from_linear_data(*rx_skb, new_skb->data, pkt_size);
2004 * velocity_iph_realign - IP header alignment
2005 * @vptr: velocity we are handling
2006 * @skb: network layer packet buffer
2007 * @pkt_size: received data size
2009 * Align IP header on a 2 bytes boundary. This behavior can be
2010 * configured by the user.
2012 static inline void velocity_iph_realign(struct velocity_info *vptr,
2013 struct sk_buff *skb, int pkt_size)
2015 if (vptr->flags & VELOCITY_FLAGS_IP_ALIGN) {
2016 memmove(skb->data + 2, skb->data, pkt_size);
2017 skb_reserve(skb, 2);
2023 * velocity_receive_frame - received packet processor
2024 * @vptr: velocity we are handling
2027 * A packet has arrived. We process the packet and if appropriate
2028 * pass the frame up the network stack
2030 static int velocity_receive_frame(struct velocity_info *vptr, int idx)
2032 void (*pci_action)(struct pci_dev *, dma_addr_t, size_t, int);
2033 struct net_device_stats *stats = &vptr->dev->stats;
2034 struct velocity_rd_info *rd_info = &(vptr->rx.info[idx]);
2035 struct rx_desc *rd = &(vptr->rx.ring[idx]);
2036 int pkt_len = le16_to_cpu(rd->rdesc0.len) & 0x3fff;
2037 struct sk_buff *skb;
2039 if (rd->rdesc0.RSR & (RSR_STP | RSR_EDP)) {
2040 VELOCITY_PRT(MSG_LEVEL_VERBOSE, KERN_ERR " %s : the received frame span multple RDs.\n", vptr->dev->name);
2041 stats->rx_length_errors++;
2045 if (rd->rdesc0.RSR & RSR_MAR)
2050 pci_dma_sync_single_for_cpu(vptr->pdev, rd_info->skb_dma,
2051 vptr->rx.buf_sz, PCI_DMA_FROMDEVICE);
2054 * Drop frame not meeting IEEE 802.3
2057 if (vptr->flags & VELOCITY_FLAGS_VAL_PKT_LEN) {
2058 if (rd->rdesc0.RSR & RSR_RL) {
2059 stats->rx_length_errors++;
2064 pci_action = pci_dma_sync_single_for_device;
2066 velocity_rx_csum(rd, skb);
2068 if (velocity_rx_copy(&skb, pkt_len, vptr) < 0) {
2069 velocity_iph_realign(vptr, skb, pkt_len);
2070 pci_action = pci_unmap_single;
2071 rd_info->skb = NULL;
2074 pci_action(vptr->pdev, rd_info->skb_dma, vptr->rx.buf_sz,
2075 PCI_DMA_FROMDEVICE);
2077 skb_put(skb, pkt_len - 4);
2078 skb->protocol = eth_type_trans(skb, vptr->dev);
2080 if (vptr->vlgrp && (rd->rdesc0.RSR & RSR_DETAG)) {
2081 vlan_hwaccel_rx(skb, vptr->vlgrp,
2082 swab16(le16_to_cpu(rd->rdesc1.PQTAG)));
2086 stats->rx_bytes += pkt_len;
2093 * velocity_rx_srv - service RX interrupt
2095 * @status: adapter status (unused)
2097 * Walk the receive ring of the velocity adapter and remove
2098 * any received packets from the receive queue. Hand the ring
2099 * slots back to the adapter for reuse.
2101 static int velocity_rx_srv(struct velocity_info *vptr, int status,
2104 struct net_device_stats *stats = &vptr->dev->stats;
2105 int rd_curr = vptr->rx.curr;
2108 while (works < budget_left) {
2109 struct rx_desc *rd = vptr->rx.ring + rd_curr;
2111 if (!vptr->rx.info[rd_curr].skb)
2114 if (rd->rdesc0.len & OWNED_BY_NIC)
2120 * Don't drop CE or RL error frame although RXOK is off
2122 if (rd->rdesc0.RSR & (RSR_RXOK | RSR_CE | RSR_RL)) {
2123 if (velocity_receive_frame(vptr, rd_curr) < 0)
2124 stats->rx_dropped++;
2126 if (rd->rdesc0.RSR & RSR_CRC)
2127 stats->rx_crc_errors++;
2128 if (rd->rdesc0.RSR & RSR_FAE)
2129 stats->rx_frame_errors++;
2131 stats->rx_dropped++;
2134 rd->size |= RX_INTEN;
2137 if (rd_curr >= vptr->options.numrx)
2142 vptr->rx.curr = rd_curr;
2144 if ((works > 0) && (velocity_rx_refill(vptr) > 0))
2145 velocity_give_many_rx_descs(vptr);
2151 static int velocity_poll(struct napi_struct *napi, int budget)
2153 struct velocity_info *vptr = container_of(napi,
2154 struct velocity_info, napi);
2155 unsigned int rx_done;
2158 spin_lock(&vptr->lock);
2159 isr_status = mac_read_isr(vptr->mac_regs);
2161 /* Ack the interrupt */
2162 mac_write_isr(vptr->mac_regs, isr_status);
2163 if (isr_status & (~(ISR_PRXI | ISR_PPRXI | ISR_PTXI | ISR_PPTXI)))
2164 velocity_error(vptr, isr_status);
2167 * Do rx and tx twice for performance (taken from the VIA
2168 * out-of-tree driver).
2170 rx_done = velocity_rx_srv(vptr, isr_status, budget / 2);
2171 velocity_tx_srv(vptr, isr_status);
2172 rx_done += velocity_rx_srv(vptr, isr_status, budget - rx_done);
2173 velocity_tx_srv(vptr, isr_status);
2175 spin_unlock(&vptr->lock);
2177 /* If budget not fully consumed, exit the polling mode */
2178 if (rx_done < budget) {
2179 napi_complete(napi);
2180 mac_enable_int(vptr->mac_regs);
2187 * velocity_intr - interrupt callback
2188 * @irq: interrupt number
2189 * @dev_instance: interrupting device
2191 * Called whenever an interrupt is generated by the velocity
2192 * adapter IRQ line. We may not be the source of the interrupt
2193 * and need to identify initially if we are, and if not exit as
2194 * efficiently as possible.
2196 static irqreturn_t velocity_intr(int irq, void *dev_instance)
2198 struct net_device *dev = dev_instance;
2199 struct velocity_info *vptr = netdev_priv(dev);
2202 spin_lock(&vptr->lock);
2203 isr_status = mac_read_isr(vptr->mac_regs);
2206 if (isr_status == 0) {
2207 spin_unlock(&vptr->lock);
2211 if (likely(napi_schedule_prep(&vptr->napi))) {
2212 mac_disable_int(vptr->mac_regs);
2213 __napi_schedule(&vptr->napi);
2215 spin_unlock(&vptr->lock);
2221 * velocity_open - interface activation callback
2222 * @dev: network layer device to open
2224 * Called when the network layer brings the interface up. Returns
2225 * a negative posix error code on failure, or zero on success.
2227 * All the ring allocation and set up is done on open for this
2228 * adapter to minimise memory usage when inactive
2230 static int velocity_open(struct net_device *dev)
2232 struct velocity_info *vptr = netdev_priv(dev);
2235 ret = velocity_init_rings(vptr, dev->mtu);
2239 /* Ensure chip is running */
2240 pci_set_power_state(vptr->pdev, PCI_D0);
2242 velocity_init_registers(vptr, VELOCITY_INIT_COLD);
2244 ret = request_irq(vptr->pdev->irq, velocity_intr, IRQF_SHARED,
2247 /* Power down the chip */
2248 pci_set_power_state(vptr->pdev, PCI_D3hot);
2249 velocity_free_rings(vptr);
2253 velocity_give_many_rx_descs(vptr);
2255 mac_enable_int(vptr->mac_regs);
2256 netif_start_queue(dev);
2257 napi_enable(&vptr->napi);
2258 vptr->flags |= VELOCITY_FLAGS_OPENED;
2264 * velocity_shutdown - shut down the chip
2265 * @vptr: velocity to deactivate
2267 * Shuts down the internal operations of the velocity and
2268 * disables interrupts, autopolling, transmit and receive
2270 static void velocity_shutdown(struct velocity_info *vptr)
2272 struct mac_regs __iomem *regs = vptr->mac_regs;
2273 mac_disable_int(regs);
2274 writel(CR0_STOP, ®s->CR0Set);
2275 writew(0xFFFF, ®s->TDCSRClr);
2276 writeb(0xFF, ®s->RDCSRClr);
2277 safe_disable_mii_autopoll(regs);
2278 mac_clear_isr(regs);
2282 * velocity_change_mtu - MTU change callback
2283 * @dev: network device
2284 * @new_mtu: desired MTU
2286 * Handle requests from the networking layer for MTU change on
2287 * this interface. It gets called on a change by the network layer.
2288 * Return zero for success or negative posix error code.
2290 static int velocity_change_mtu(struct net_device *dev, int new_mtu)
2292 struct velocity_info *vptr = netdev_priv(dev);
2295 if ((new_mtu < VELOCITY_MIN_MTU) || new_mtu > (VELOCITY_MAX_MTU)) {
2296 VELOCITY_PRT(MSG_LEVEL_ERR, KERN_NOTICE "%s: Invalid MTU.\n",
2302 if (!netif_running(dev)) {
2307 if (dev->mtu != new_mtu) {
2308 struct velocity_info *tmp_vptr;
2309 unsigned long flags;
2313 tmp_vptr = kzalloc(sizeof(*tmp_vptr), GFP_KERNEL);
2319 tmp_vptr->dev = dev;
2320 tmp_vptr->pdev = vptr->pdev;
2321 tmp_vptr->options = vptr->options;
2322 tmp_vptr->tx.numq = vptr->tx.numq;
2324 ret = velocity_init_rings(tmp_vptr, new_mtu);
2326 goto out_free_tmp_vptr_1;
2328 spin_lock_irqsave(&vptr->lock, flags);
2330 netif_stop_queue(dev);
2331 velocity_shutdown(vptr);
2336 vptr->rx = tmp_vptr->rx;
2337 vptr->tx = tmp_vptr->tx;
2344 velocity_init_registers(vptr, VELOCITY_INIT_COLD);
2346 velocity_give_many_rx_descs(vptr);
2348 mac_enable_int(vptr->mac_regs);
2349 netif_start_queue(dev);
2351 spin_unlock_irqrestore(&vptr->lock, flags);
2353 velocity_free_rings(tmp_vptr);
2355 out_free_tmp_vptr_1:
2363 * velocity_mii_ioctl - MII ioctl handler
2364 * @dev: network device
2365 * @ifr: the ifreq block for the ioctl
2368 * Process MII requests made via ioctl from the network layer. These
2369 * are used by tools like kudzu to interrogate the link state of the
2372 static int velocity_mii_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
2374 struct velocity_info *vptr = netdev_priv(dev);
2375 struct mac_regs __iomem *regs = vptr->mac_regs;
2376 unsigned long flags;
2377 struct mii_ioctl_data *miidata = if_mii(ifr);
2382 miidata->phy_id = readb(®s->MIIADR) & 0x1f;
2385 if (velocity_mii_read(vptr->mac_regs, miidata->reg_num & 0x1f, &(miidata->val_out)) < 0)
2389 spin_lock_irqsave(&vptr->lock, flags);
2390 err = velocity_mii_write(vptr->mac_regs, miidata->reg_num & 0x1f, miidata->val_in);
2391 spin_unlock_irqrestore(&vptr->lock, flags);
2392 check_connection_type(vptr->mac_regs);
2404 * velocity_ioctl - ioctl entry point
2405 * @dev: network device
2406 * @rq: interface request ioctl
2407 * @cmd: command code
2409 * Called when the user issues an ioctl request to the network
2410 * device in question. The velocity interface supports MII.
2412 static int velocity_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2414 struct velocity_info *vptr = netdev_priv(dev);
2417 /* If we are asked for information and the device is power
2418 saving then we need to bring the device back up to talk to it */
2420 if (!netif_running(dev))
2421 pci_set_power_state(vptr->pdev, PCI_D0);
2424 case SIOCGMIIPHY: /* Get address of MII PHY in use. */
2425 case SIOCGMIIREG: /* Read MII PHY register. */
2426 case SIOCSMIIREG: /* Write to MII PHY register. */
2427 ret = velocity_mii_ioctl(dev, rq, cmd);
2433 if (!netif_running(dev))
2434 pci_set_power_state(vptr->pdev, PCI_D3hot);
2441 * velocity_get_status - statistics callback
2442 * @dev: network device
2444 * Callback from the network layer to allow driver statistics
2445 * to be resynchronized with hardware collected state. In the
2446 * case of the velocity we need to pull the MIB counters from
2447 * the hardware into the counters before letting the network
2448 * layer display them.
2450 static struct net_device_stats *velocity_get_stats(struct net_device *dev)
2452 struct velocity_info *vptr = netdev_priv(dev);
2454 /* If the hardware is down, don't touch MII */
2455 if (!netif_running(dev))
2458 spin_lock_irq(&vptr->lock);
2459 velocity_update_hw_mibs(vptr);
2460 spin_unlock_irq(&vptr->lock);
2462 dev->stats.rx_packets = vptr->mib_counter[HW_MIB_ifRxAllPkts];
2463 dev->stats.rx_errors = vptr->mib_counter[HW_MIB_ifRxErrorPkts];
2464 dev->stats.rx_length_errors = vptr->mib_counter[HW_MIB_ifInRangeLengthErrors];
2466 // unsigned long rx_dropped; /* no space in linux buffers */
2467 dev->stats.collisions = vptr->mib_counter[HW_MIB_ifTxEtherCollisions];
2468 /* detailed rx_errors: */
2469 // unsigned long rx_length_errors;
2470 // unsigned long rx_over_errors; /* receiver ring buff overflow */
2471 dev->stats.rx_crc_errors = vptr->mib_counter[HW_MIB_ifRxPktCRCE];
2472 // unsigned long rx_frame_errors; /* recv'd frame alignment error */
2473 // unsigned long rx_fifo_errors; /* recv'r fifo overrun */
2474 // unsigned long rx_missed_errors; /* receiver missed packet */
2476 /* detailed tx_errors */
2477 // unsigned long tx_fifo_errors;
2483 * velocity_close - close adapter callback
2484 * @dev: network device
2486 * Callback from the network layer when the velocity is being
2487 * deactivated by the network layer
2489 static int velocity_close(struct net_device *dev)
2491 struct velocity_info *vptr = netdev_priv(dev);
2493 napi_disable(&vptr->napi);
2494 netif_stop_queue(dev);
2495 velocity_shutdown(vptr);
2497 if (vptr->flags & VELOCITY_FLAGS_WOL_ENABLED)
2498 velocity_get_ip(vptr);
2500 free_irq(dev->irq, dev);
2502 /* Power down the chip */
2503 pci_set_power_state(vptr->pdev, PCI_D3hot);
2505 velocity_free_rings(vptr);
2507 vptr->flags &= (~VELOCITY_FLAGS_OPENED);
2512 * velocity_xmit - transmit packet callback
2513 * @skb: buffer to transmit
2514 * @dev: network device
2516 * Called by the networ layer to request a packet is queued to
2517 * the velocity. Returns zero on success.
2519 static netdev_tx_t velocity_xmit(struct sk_buff *skb,
2520 struct net_device *dev)
2522 struct velocity_info *vptr = netdev_priv(dev);
2524 struct tx_desc *td_ptr;
2525 struct velocity_td_info *tdinfo;
2526 unsigned long flags;
2531 if (skb_padto(skb, ETH_ZLEN))
2534 /* The hardware can handle at most 7 memory segments, so merge
2535 * the skb if there are more */
2536 if (skb_shinfo(skb)->nr_frags > 6 && __skb_linearize(skb)) {
2538 return NETDEV_TX_OK;
2541 pktlen = skb_shinfo(skb)->nr_frags == 0 ?
2542 max_t(unsigned int, skb->len, ETH_ZLEN) :
2545 spin_lock_irqsave(&vptr->lock, flags);
2547 index = vptr->tx.curr[qnum];
2548 td_ptr = &(vptr->tx.rings[qnum][index]);
2549 tdinfo = &(vptr->tx.infos[qnum][index]);
2551 td_ptr->tdesc1.TCR = TCR0_TIC;
2552 td_ptr->td_buf[0].size &= ~TD_QUEUE;
2555 * Map the linear network buffer into PCI space and
2556 * add it to the transmit ring.
2559 tdinfo->skb_dma[0] = pci_map_single(vptr->pdev, skb->data, pktlen, PCI_DMA_TODEVICE);
2560 td_ptr->tdesc0.len = cpu_to_le16(pktlen);
2561 td_ptr->td_buf[0].pa_low = cpu_to_le32(tdinfo->skb_dma[0]);
2562 td_ptr->td_buf[0].pa_high = 0;
2563 td_ptr->td_buf[0].size = cpu_to_le16(pktlen);
2565 /* Handle fragments */
2566 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
2567 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
2569 tdinfo->skb_dma[i + 1] = pci_map_page(vptr->pdev, frag->page,
2570 frag->page_offset, frag->size,
2573 td_ptr->td_buf[i + 1].pa_low = cpu_to_le32(tdinfo->skb_dma[i + 1]);
2574 td_ptr->td_buf[i + 1].pa_high = 0;
2575 td_ptr->td_buf[i + 1].size = cpu_to_le16(frag->size);
2577 tdinfo->nskb_dma = i + 1;
2579 td_ptr->tdesc1.cmd = TCPLS_NORMAL + (tdinfo->nskb_dma + 1) * 16;
2581 if (vptr->vlgrp && vlan_tx_tag_present(skb)) {
2582 td_ptr->tdesc1.vlan = cpu_to_le16(vlan_tx_tag_get(skb));
2583 td_ptr->tdesc1.TCR |= TCR0_VETAG;
2587 * Handle hardware checksum
2589 if ((dev->features & NETIF_F_IP_CSUM) &&
2590 (skb->ip_summed == CHECKSUM_PARTIAL)) {
2591 const struct iphdr *ip = ip_hdr(skb);
2592 if (ip->protocol == IPPROTO_TCP)
2593 td_ptr->tdesc1.TCR |= TCR0_TCPCK;
2594 else if (ip->protocol == IPPROTO_UDP)
2595 td_ptr->tdesc1.TCR |= (TCR0_UDPCK);
2596 td_ptr->tdesc1.TCR |= TCR0_IPCK;
2601 prev = vptr->options.numtx - 1;
2602 td_ptr->tdesc0.len |= OWNED_BY_NIC;
2603 vptr->tx.used[qnum]++;
2604 vptr->tx.curr[qnum] = (index + 1) % vptr->options.numtx;
2606 if (AVAIL_TD(vptr, qnum) < 1)
2607 netif_stop_queue(dev);
2609 td_ptr = &(vptr->tx.rings[qnum][prev]);
2610 td_ptr->td_buf[0].size |= TD_QUEUE;
2611 mac_tx_queue_wake(vptr->mac_regs, qnum);
2613 dev->trans_start = jiffies;
2614 spin_unlock_irqrestore(&vptr->lock, flags);
2616 return NETDEV_TX_OK;
2620 static const struct net_device_ops velocity_netdev_ops = {
2621 .ndo_open = velocity_open,
2622 .ndo_stop = velocity_close,
2623 .ndo_start_xmit = velocity_xmit,
2624 .ndo_get_stats = velocity_get_stats,
2625 .ndo_validate_addr = eth_validate_addr,
2626 .ndo_set_mac_address = eth_mac_addr,
2627 .ndo_set_multicast_list = velocity_set_multi,
2628 .ndo_change_mtu = velocity_change_mtu,
2629 .ndo_do_ioctl = velocity_ioctl,
2630 .ndo_vlan_rx_add_vid = velocity_vlan_rx_add_vid,
2631 .ndo_vlan_rx_kill_vid = velocity_vlan_rx_kill_vid,
2632 .ndo_vlan_rx_register = velocity_vlan_rx_register,
2636 * velocity_init_info - init private data
2638 * @vptr: Velocity info
2641 * Set up the initial velocity_info struct for the device that has been
2644 static void __devinit velocity_init_info(struct pci_dev *pdev,
2645 struct velocity_info *vptr,
2646 const struct velocity_info_tbl *info)
2648 memset(vptr, 0, sizeof(struct velocity_info));
2651 vptr->chip_id = info->chip_id;
2652 vptr->tx.numq = info->txqueue;
2653 vptr->multicast_limit = MCAM_SIZE;
2654 spin_lock_init(&vptr->lock);
2658 * velocity_get_pci_info - retrieve PCI info for device
2659 * @vptr: velocity device
2660 * @pdev: PCI device it matches
2662 * Retrieve the PCI configuration space data that interests us from
2663 * the kernel PCI layer
2665 static int __devinit velocity_get_pci_info(struct velocity_info *vptr, struct pci_dev *pdev)
2667 vptr->rev_id = pdev->revision;
2669 pci_set_master(pdev);
2671 vptr->ioaddr = pci_resource_start(pdev, 0);
2672 vptr->memaddr = pci_resource_start(pdev, 1);
2674 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_IO)) {
2676 "region #0 is not an I/O resource, aborting.\n");
2680 if ((pci_resource_flags(pdev, 1) & IORESOURCE_IO)) {
2682 "region #1 is an I/O resource, aborting.\n");
2686 if (pci_resource_len(pdev, 1) < VELOCITY_IO_SIZE) {
2687 dev_err(&pdev->dev, "region #1 is too small.\n");
2696 * velocity_print_info - per driver data
2699 * Print per driver data as the kernel driver finds Velocity
2702 static void __devinit velocity_print_info(struct velocity_info *vptr)
2704 struct net_device *dev = vptr->dev;
2706 printk(KERN_INFO "%s: %s\n", dev->name, get_chip_name(vptr->chip_id));
2707 printk(KERN_INFO "%s: Ethernet Address: %pM\n",
2708 dev->name, dev->dev_addr);
2711 static u32 velocity_get_link(struct net_device *dev)
2713 struct velocity_info *vptr = netdev_priv(dev);
2714 struct mac_regs __iomem *regs = vptr->mac_regs;
2715 return BYTE_REG_BITS_IS_ON(PHYSR0_LINKGD, ®s->PHYSR0) ? 1 : 0;
2720 * velocity_found1 - set up discovered velocity card
2722 * @ent: PCI device table entry that matched
2724 * Configure a discovered adapter from scratch. Return a negative
2725 * errno error code on failure paths.
2727 static int __devinit velocity_found1(struct pci_dev *pdev, const struct pci_device_id *ent)
2729 static int first = 1;
2730 struct net_device *dev;
2732 const char *drv_string;
2733 const struct velocity_info_tbl *info = &chip_info_table[ent->driver_data];
2734 struct velocity_info *vptr;
2735 struct mac_regs __iomem *regs;
2738 /* FIXME: this driver, like almost all other ethernet drivers,
2739 * can support more than MAX_UNITS.
2741 if (velocity_nics >= MAX_UNITS) {
2742 dev_notice(&pdev->dev, "already found %d NICs.\n",
2747 dev = alloc_etherdev(sizeof(struct velocity_info));
2749 dev_err(&pdev->dev, "allocate net device failed.\n");
2753 /* Chain it all together */
2755 SET_NETDEV_DEV(dev, &pdev->dev);
2756 vptr = netdev_priv(dev);
2760 printk(KERN_INFO "%s Ver. %s\n",
2761 VELOCITY_FULL_DRV_NAM, VELOCITY_VERSION);
2762 printk(KERN_INFO "Copyright (c) 2002, 2003 VIA Networking Technologies, Inc.\n");
2763 printk(KERN_INFO "Copyright (c) 2004 Red Hat Inc.\n");
2767 velocity_init_info(pdev, vptr, info);
2771 dev->irq = pdev->irq;
2773 ret = pci_enable_device(pdev);
2777 ret = velocity_get_pci_info(vptr, pdev);
2779 /* error message already printed */
2783 ret = pci_request_regions(pdev, VELOCITY_NAME);
2785 dev_err(&pdev->dev, "No PCI resources.\n");
2789 regs = ioremap(vptr->memaddr, VELOCITY_IO_SIZE);
2792 goto err_release_res;
2795 vptr->mac_regs = regs;
2797 mac_wol_reset(regs);
2799 dev->base_addr = vptr->ioaddr;
2801 for (i = 0; i < 6; i++)
2802 dev->dev_addr[i] = readb(®s->PAR[i]);
2805 drv_string = dev_driver_string(&pdev->dev);
2807 velocity_get_options(&vptr->options, velocity_nics, drv_string);
2810 * Mask out the options cannot be set to the chip
2813 vptr->options.flags &= info->flags;
2816 * Enable the chip specified capbilities
2819 vptr->flags = vptr->options.flags | (info->flags & 0xFF000000UL);
2821 vptr->wol_opts = vptr->options.wol_opts;
2822 vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
2824 vptr->phy_id = MII_GET_PHY_ID(vptr->mac_regs);
2826 dev->irq = pdev->irq;
2827 dev->netdev_ops = &velocity_netdev_ops;
2828 dev->ethtool_ops = &velocity_ethtool_ops;
2829 netif_napi_add(dev, &vptr->napi, velocity_poll, VELOCITY_NAPI_WEIGHT);
2831 dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER |
2832 NETIF_F_HW_VLAN_RX | NETIF_F_IP_CSUM;
2834 ret = register_netdev(dev);
2838 if (!velocity_get_link(dev)) {
2839 netif_carrier_off(dev);
2840 vptr->mii_status |= VELOCITY_LINK_FAIL;
2843 velocity_print_info(vptr);
2844 pci_set_drvdata(pdev, dev);
2846 /* and leave the chip powered down */
2848 pci_set_power_state(pdev, PCI_D3hot);
2856 pci_release_regions(pdev);
2858 pci_disable_device(pdev);
2867 * wol_calc_crc - WOL CRC
2868 * @pattern: data pattern
2869 * @mask_pattern: mask
2871 * Compute the wake on lan crc hashes for the packet header
2872 * we are interested in.
2874 static u16 wol_calc_crc(int size, u8 *pattern, u8 *mask_pattern)
2880 for (i = 0; i < size; i++) {
2881 mask = mask_pattern[i];
2883 /* Skip this loop if the mask equals to zero */
2887 for (j = 0; j < 8; j++) {
2888 if ((mask & 0x01) == 0) {
2893 crc = crc_ccitt(crc, &(pattern[i * 8 + j]), 1);
2896 /* Finally, invert the result once to get the correct data */
2898 return bitrev32(crc) >> 16;
2902 * velocity_set_wol - set up for wake on lan
2903 * @vptr: velocity to set WOL status on
2905 * Set a card up for wake on lan either by unicast or by
2908 * FIXME: check static buffer is safe here
2910 static int velocity_set_wol(struct velocity_info *vptr)
2912 struct mac_regs __iomem *regs = vptr->mac_regs;
2916 static u32 mask_pattern[2][4] = {
2917 {0x00203000, 0x000003C0, 0x00000000, 0x0000000}, /* ARP */
2918 {0xfffff000, 0xffffffff, 0xffffffff, 0x000ffff} /* Magic Packet */
2921 writew(0xFFFF, ®s->WOLCRClr);
2922 writeb(WOLCFG_SAB | WOLCFG_SAM, ®s->WOLCFGSet);
2923 writew(WOLCR_MAGIC_EN, ®s->WOLCRSet);
2926 if (vptr->wol_opts & VELOCITY_WOL_PHY)
2927 writew((WOLCR_LINKON_EN|WOLCR_LINKOFF_EN), ®s->WOLCRSet);
2930 if (vptr->wol_opts & VELOCITY_WOL_UCAST)
2931 writew(WOLCR_UNICAST_EN, ®s->WOLCRSet);
2933 if (vptr->wol_opts & VELOCITY_WOL_ARP) {
2934 struct arp_packet *arp = (struct arp_packet *) buf;
2936 memset(buf, 0, sizeof(struct arp_packet) + 7);
2938 for (i = 0; i < 4; i++)
2939 writel(mask_pattern[0][i], ®s->ByteMask[0][i]);
2941 arp->type = htons(ETH_P_ARP);
2942 arp->ar_op = htons(1);
2944 memcpy(arp->ar_tip, vptr->ip_addr, 4);
2946 crc = wol_calc_crc((sizeof(struct arp_packet) + 7) / 8, buf,
2947 (u8 *) & mask_pattern[0][0]);
2949 writew(crc, ®s->PatternCRC[0]);
2950 writew(WOLCR_ARP_EN, ®s->WOLCRSet);
2953 BYTE_REG_BITS_ON(PWCFG_WOLTYPE, ®s->PWCFGSet);
2954 BYTE_REG_BITS_ON(PWCFG_LEGACY_WOLEN, ®s->PWCFGSet);
2956 writew(0x0FFF, ®s->WOLSRClr);
2958 if (vptr->mii_status & VELOCITY_AUTONEG_ENABLE) {
2959 if (PHYID_GET_PHY_ID(vptr->phy_id) == PHYID_CICADA_CS8201)
2960 MII_REG_BITS_ON(AUXCR_MDPPS, MII_REG_AUXCR, vptr->mac_regs);
2962 MII_REG_BITS_OFF(G1000CR_1000FD | G1000CR_1000, MII_REG_G1000CR, vptr->mac_regs);
2965 if (vptr->mii_status & VELOCITY_SPEED_1000)
2966 MII_REG_BITS_ON(BMCR_REAUTO, MII_REG_BMCR, vptr->mac_regs);
2968 BYTE_REG_BITS_ON(CHIPGCR_FCMODE, ®s->CHIPGCR);
2972 GCR = readb(®s->CHIPGCR);
2973 GCR = (GCR & ~CHIPGCR_FCGMII) | CHIPGCR_FCFDX;
2974 writeb(GCR, ®s->CHIPGCR);
2977 BYTE_REG_BITS_OFF(ISR_PWEI, ®s->ISR);
2978 /* Turn on SWPTAG just before entering power mode */
2979 BYTE_REG_BITS_ON(STICKHW_SWPTAG, ®s->STICKHW);
2980 /* Go to bed ..... */
2981 BYTE_REG_BITS_ON((STICKHW_DS1 | STICKHW_DS0), ®s->STICKHW);
2987 * velocity_save_context - save registers
2989 * @context: buffer for stored context
2991 * Retrieve the current configuration from the velocity hardware
2992 * and stash it in the context structure, for use by the context
2993 * restore functions. This allows us to save things we need across
2996 static void velocity_save_context(struct velocity_info *vptr, struct velocity_context *context)
2998 struct mac_regs __iomem *regs = vptr->mac_regs;
3000 u8 __iomem *ptr = (u8 __iomem *)regs;
3002 for (i = MAC_REG_PAR; i < MAC_REG_CR0_CLR; i += 4)
3003 *((u32 *) (context->mac_reg + i)) = readl(ptr + i);
3005 for (i = MAC_REG_MAR; i < MAC_REG_TDCSR_CLR; i += 4)
3006 *((u32 *) (context->mac_reg + i)) = readl(ptr + i);
3008 for (i = MAC_REG_RDBASE_LO; i < MAC_REG_FIFO_TEST0; i += 4)
3009 *((u32 *) (context->mac_reg + i)) = readl(ptr + i);
3013 static int velocity_suspend(struct pci_dev *pdev, pm_message_t state)
3015 struct net_device *dev = pci_get_drvdata(pdev);
3016 struct velocity_info *vptr = netdev_priv(dev);
3017 unsigned long flags;
3019 if (!netif_running(vptr->dev))
3022 netif_device_detach(vptr->dev);
3024 spin_lock_irqsave(&vptr->lock, flags);
3025 pci_save_state(pdev);
3027 if (vptr->flags & VELOCITY_FLAGS_WOL_ENABLED) {
3028 velocity_get_ip(vptr);
3029 velocity_save_context(vptr, &vptr->context);
3030 velocity_shutdown(vptr);
3031 velocity_set_wol(vptr);
3032 pci_enable_wake(pdev, PCI_D3hot, 1);
3033 pci_set_power_state(pdev, PCI_D3hot);
3035 velocity_save_context(vptr, &vptr->context);
3036 velocity_shutdown(vptr);
3037 pci_disable_device(pdev);
3038 pci_set_power_state(pdev, pci_choose_state(pdev, state));
3041 pci_set_power_state(pdev, pci_choose_state(pdev, state));
3043 spin_unlock_irqrestore(&vptr->lock, flags);
3048 * velocity_restore_context - restore registers
3050 * @context: buffer for stored context
3052 * Reload the register configuration from the velocity context
3053 * created by velocity_save_context.
3055 static void velocity_restore_context(struct velocity_info *vptr, struct velocity_context *context)
3057 struct mac_regs __iomem *regs = vptr->mac_regs;
3059 u8 __iomem *ptr = (u8 __iomem *)regs;
3061 for (i = MAC_REG_PAR; i < MAC_REG_CR0_SET; i += 4)
3062 writel(*((u32 *) (context->mac_reg + i)), ptr + i);
3065 for (i = MAC_REG_CR1_SET; i < MAC_REG_CR0_CLR; i++) {
3067 writeb(~(*((u8 *) (context->mac_reg + i))), ptr + i + 4);
3069 writeb(*((u8 *) (context->mac_reg + i)), ptr + i);
3072 for (i = MAC_REG_MAR; i < MAC_REG_IMR; i += 4)
3073 writel(*((u32 *) (context->mac_reg + i)), ptr + i);
3075 for (i = MAC_REG_RDBASE_LO; i < MAC_REG_FIFO_TEST0; i += 4)
3076 writel(*((u32 *) (context->mac_reg + i)), ptr + i);
3078 for (i = MAC_REG_TDCSR_SET; i <= MAC_REG_RDCSR_SET; i++)
3079 writeb(*((u8 *) (context->mac_reg + i)), ptr + i);
3082 static int velocity_resume(struct pci_dev *pdev)
3084 struct net_device *dev = pci_get_drvdata(pdev);
3085 struct velocity_info *vptr = netdev_priv(dev);
3086 unsigned long flags;
3089 if (!netif_running(vptr->dev))
3092 pci_set_power_state(pdev, PCI_D0);
3093 pci_enable_wake(pdev, 0, 0);
3094 pci_restore_state(pdev);
3096 mac_wol_reset(vptr->mac_regs);
3098 spin_lock_irqsave(&vptr->lock, flags);
3099 velocity_restore_context(vptr, &vptr->context);
3100 velocity_init_registers(vptr, VELOCITY_INIT_WOL);
3101 mac_disable_int(vptr->mac_regs);
3103 velocity_tx_srv(vptr, 0);
3105 for (i = 0; i < vptr->tx.numq; i++) {
3106 if (vptr->tx.used[i])
3107 mac_tx_queue_wake(vptr->mac_regs, i);
3110 mac_enable_int(vptr->mac_regs);
3111 spin_unlock_irqrestore(&vptr->lock, flags);
3112 netif_device_attach(vptr->dev);
3119 * Definition for our device driver. The PCI layer interface
3120 * uses this to handle all our card discover and plugging
3122 static struct pci_driver velocity_driver = {
3123 .name = VELOCITY_NAME,
3124 .id_table = velocity_id_table,
3125 .probe = velocity_found1,
3126 .remove = __devexit_p(velocity_remove1),
3128 .suspend = velocity_suspend,
3129 .resume = velocity_resume,
3135 * velocity_ethtool_up - pre hook for ethtool
3136 * @dev: network device
3138 * Called before an ethtool operation. We need to make sure the
3139 * chip is out of D3 state before we poke at it.
3141 static int velocity_ethtool_up(struct net_device *dev)
3143 struct velocity_info *vptr = netdev_priv(dev);
3144 if (!netif_running(dev))
3145 pci_set_power_state(vptr->pdev, PCI_D0);
3150 * velocity_ethtool_down - post hook for ethtool
3151 * @dev: network device
3153 * Called after an ethtool operation. Restore the chip back to D3
3154 * state if it isn't running.
3156 static void velocity_ethtool_down(struct net_device *dev)
3158 struct velocity_info *vptr = netdev_priv(dev);
3159 if (!netif_running(dev))
3160 pci_set_power_state(vptr->pdev, PCI_D3hot);
3163 static int velocity_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
3165 struct velocity_info *vptr = netdev_priv(dev);
3166 struct mac_regs __iomem *regs = vptr->mac_regs;
3168 status = check_connection_type(vptr->mac_regs);
3170 cmd->supported = SUPPORTED_TP |
3172 SUPPORTED_10baseT_Half |
3173 SUPPORTED_10baseT_Full |
3174 SUPPORTED_100baseT_Half |
3175 SUPPORTED_100baseT_Full |
3176 SUPPORTED_1000baseT_Half |
3177 SUPPORTED_1000baseT_Full;
3178 if (status & VELOCITY_SPEED_1000)
3179 cmd->speed = SPEED_1000;
3180 else if (status & VELOCITY_SPEED_100)
3181 cmd->speed = SPEED_100;
3183 cmd->speed = SPEED_10;
3184 cmd->autoneg = (status & VELOCITY_AUTONEG_ENABLE) ? AUTONEG_ENABLE : AUTONEG_DISABLE;
3185 cmd->port = PORT_TP;
3186 cmd->transceiver = XCVR_INTERNAL;
3187 cmd->phy_address = readb(®s->MIIADR) & 0x1F;
3189 if (status & VELOCITY_DUPLEX_FULL)
3190 cmd->duplex = DUPLEX_FULL;
3192 cmd->duplex = DUPLEX_HALF;
3197 static int velocity_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
3199 struct velocity_info *vptr = netdev_priv(dev);
3204 curr_status = check_connection_type(vptr->mac_regs);
3205 curr_status &= (~VELOCITY_LINK_FAIL);
3207 new_status |= ((cmd->autoneg) ? VELOCITY_AUTONEG_ENABLE : 0);
3208 new_status |= ((cmd->speed == SPEED_100) ? VELOCITY_SPEED_100 : 0);
3209 new_status |= ((cmd->speed == SPEED_10) ? VELOCITY_SPEED_10 : 0);
3210 new_status |= ((cmd->duplex == DUPLEX_FULL) ? VELOCITY_DUPLEX_FULL : 0);
3212 if ((new_status & VELOCITY_AUTONEG_ENABLE) && (new_status != (curr_status | VELOCITY_AUTONEG_ENABLE)))
3215 velocity_set_media_mode(vptr, new_status);
3220 static void velocity_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
3222 struct velocity_info *vptr = netdev_priv(dev);
3223 strcpy(info->driver, VELOCITY_NAME);
3224 strcpy(info->version, VELOCITY_VERSION);
3225 strcpy(info->bus_info, pci_name(vptr->pdev));
3228 static void velocity_ethtool_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
3230 struct velocity_info *vptr = netdev_priv(dev);
3231 wol->supported = WAKE_PHY | WAKE_MAGIC | WAKE_UCAST | WAKE_ARP;
3232 wol->wolopts |= WAKE_MAGIC;
3234 if (vptr->wol_opts & VELOCITY_WOL_PHY)
3235 wol.wolopts|=WAKE_PHY;
3237 if (vptr->wol_opts & VELOCITY_WOL_UCAST)
3238 wol->wolopts |= WAKE_UCAST;
3239 if (vptr->wol_opts & VELOCITY_WOL_ARP)
3240 wol->wolopts |= WAKE_ARP;
3241 memcpy(&wol->sopass, vptr->wol_passwd, 6);
3244 static int velocity_ethtool_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
3246 struct velocity_info *vptr = netdev_priv(dev);
3248 if (!(wol->wolopts & (WAKE_PHY | WAKE_MAGIC | WAKE_UCAST | WAKE_ARP)))
3250 vptr->wol_opts = VELOCITY_WOL_MAGIC;
3253 if (wol.wolopts & WAKE_PHY) {
3254 vptr->wol_opts|=VELOCITY_WOL_PHY;
3255 vptr->flags |=VELOCITY_FLAGS_WOL_ENABLED;
3259 if (wol->wolopts & WAKE_MAGIC) {
3260 vptr->wol_opts |= VELOCITY_WOL_MAGIC;
3261 vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
3263 if (wol->wolopts & WAKE_UCAST) {
3264 vptr->wol_opts |= VELOCITY_WOL_UCAST;
3265 vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
3267 if (wol->wolopts & WAKE_ARP) {
3268 vptr->wol_opts |= VELOCITY_WOL_ARP;
3269 vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
3271 memcpy(vptr->wol_passwd, wol->sopass, 6);
3275 static u32 velocity_get_msglevel(struct net_device *dev)
3280 static void velocity_set_msglevel(struct net_device *dev, u32 value)
3285 static int get_pending_timer_val(int val)
3287 int mult_bits = val >> 6;
3303 return (val & 0x3f) * mult;
3306 static void set_pending_timer_val(int *val, u32 us)
3312 mult = 1; /* mult with 4 */
3315 if (us >= 0x3f * 4) {
3316 mult = 2; /* mult with 16 */
3319 if (us >= 0x3f * 16) {
3320 mult = 3; /* mult with 64 */
3324 *val = (mult << 6) | ((us >> shift) & 0x3f);
3328 static int velocity_get_coalesce(struct net_device *dev,
3329 struct ethtool_coalesce *ecmd)
3331 struct velocity_info *vptr = netdev_priv(dev);
3333 ecmd->tx_max_coalesced_frames = vptr->options.tx_intsup;
3334 ecmd->rx_max_coalesced_frames = vptr->options.rx_intsup;
3336 ecmd->rx_coalesce_usecs = get_pending_timer_val(vptr->options.rxqueue_timer);
3337 ecmd->tx_coalesce_usecs = get_pending_timer_val(vptr->options.txqueue_timer);
3342 static int velocity_set_coalesce(struct net_device *dev,
3343 struct ethtool_coalesce *ecmd)
3345 struct velocity_info *vptr = netdev_priv(dev);
3346 int max_us = 0x3f * 64;
3349 if (ecmd->tx_coalesce_usecs > max_us)
3351 if (ecmd->rx_coalesce_usecs > max_us)
3354 if (ecmd->tx_max_coalesced_frames > 0xff)
3356 if (ecmd->rx_max_coalesced_frames > 0xff)
3359 vptr->options.rx_intsup = ecmd->rx_max_coalesced_frames;
3360 vptr->options.tx_intsup = ecmd->tx_max_coalesced_frames;
3362 set_pending_timer_val(&vptr->options.rxqueue_timer,
3363 ecmd->rx_coalesce_usecs);
3364 set_pending_timer_val(&vptr->options.txqueue_timer,
3365 ecmd->tx_coalesce_usecs);
3367 /* Setup the interrupt suppression and queue timers */
3368 mac_disable_int(vptr->mac_regs);
3369 setup_adaptive_interrupts(vptr);
3370 setup_queue_timers(vptr);
3372 mac_write_int_mask(vptr->int_mask, vptr->mac_regs);
3373 mac_clear_isr(vptr->mac_regs);
3374 mac_enable_int(vptr->mac_regs);
3379 static const struct ethtool_ops velocity_ethtool_ops = {
3380 .get_settings = velocity_get_settings,
3381 .set_settings = velocity_set_settings,
3382 .get_drvinfo = velocity_get_drvinfo,
3383 .set_tx_csum = ethtool_op_set_tx_csum,
3384 .get_tx_csum = ethtool_op_get_tx_csum,
3385 .get_wol = velocity_ethtool_get_wol,
3386 .set_wol = velocity_ethtool_set_wol,
3387 .get_msglevel = velocity_get_msglevel,
3388 .set_msglevel = velocity_set_msglevel,
3389 .set_sg = ethtool_op_set_sg,
3390 .get_link = velocity_get_link,
3391 .get_coalesce = velocity_get_coalesce,
3392 .set_coalesce = velocity_set_coalesce,
3393 .begin = velocity_ethtool_up,
3394 .complete = velocity_ethtool_down
3399 static int velocity_netdev_event(struct notifier_block *nb, unsigned long notification, void *ptr)
3401 struct in_ifaddr *ifa = (struct in_ifaddr *) ptr;
3402 struct net_device *dev = ifa->ifa_dev->dev;
3404 if (dev_net(dev) == &init_net &&
3405 dev->netdev_ops == &velocity_netdev_ops)
3406 velocity_get_ip(netdev_priv(dev));
3410 #endif /* CONFIG_INET */
3411 #endif /* CONFIG_PM */
3413 #if defined(CONFIG_PM) && defined(CONFIG_INET)
3414 static struct notifier_block velocity_inetaddr_notifier = {
3415 .notifier_call = velocity_netdev_event,
3418 static void velocity_register_notifier(void)
3420 register_inetaddr_notifier(&velocity_inetaddr_notifier);
3423 static void velocity_unregister_notifier(void)
3425 unregister_inetaddr_notifier(&velocity_inetaddr_notifier);
3430 #define velocity_register_notifier() do {} while (0)
3431 #define velocity_unregister_notifier() do {} while (0)
3433 #endif /* defined(CONFIG_PM) && defined(CONFIG_INET) */
3436 * velocity_init_module - load time function
3438 * Called when the velocity module is loaded. The PCI driver
3439 * is registered with the PCI layer, and in turn will call
3440 * the probe functions for each velocity adapter installed
3443 static int __init velocity_init_module(void)
3447 velocity_register_notifier();
3448 ret = pci_register_driver(&velocity_driver);
3450 velocity_unregister_notifier();
3455 * velocity_cleanup - module unload
3457 * When the velocity hardware is unloaded this function is called.
3458 * It will clean up the notifiers and the unregister the PCI
3459 * driver interface for this hardware. This in turn cleans up
3460 * all discovered interfaces before returning from the function
3462 static void __exit velocity_cleanup_module(void)
3464 velocity_unregister_notifier();
3465 pci_unregister_driver(&velocity_driver);
3468 module_init(velocity_init_module);
3469 module_exit(velocity_cleanup_module);