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 TX_CSUM_DEF 1
301 /* txcsum_offload[] is used for setting the checksum offload ability of NIC.
302 (We only support RX checksum offload now)
303 0: disable csum_offload[checksum offload
304 1: enable checksum offload. (Default)
306 VELOCITY_PARAM(txcsum_offload, "Enable transmit packet checksum offload");
308 #define FLOW_CNTL_DEF 1
309 #define FLOW_CNTL_MIN 1
310 #define FLOW_CNTL_MAX 5
312 /* flow_control[] is used for setting the flow control ability of NIC.
313 1: hardware deafult - AUTO (default). Use Hardware default value in ANAR.
314 2: enable TX flow control.
315 3: enable RX flow control.
316 4: enable RX/TX flow control.
319 VELOCITY_PARAM(flow_control, "Enable flow control ability");
321 #define MED_LNK_DEF 0
322 #define MED_LNK_MIN 0
323 #define MED_LNK_MAX 4
324 /* speed_duplex[] is used for setting the speed and duplex mode of NIC.
325 0: indicate autonegotiation for both speed and duplex mode
326 1: indicate 100Mbps half duplex mode
327 2: indicate 100Mbps full duplex mode
328 3: indicate 10Mbps half duplex mode
329 4: indicate 10Mbps full duplex mode
332 if EEPROM have been set to the force mode, this option is ignored
335 VELOCITY_PARAM(speed_duplex, "Setting the speed and duplex mode");
337 #define VAL_PKT_LEN_DEF 0
338 /* ValPktLen[] is used for setting the checksum offload ability of NIC.
339 0: Receive frame with invalid layer 2 length (Default)
340 1: Drop frame with invalid layer 2 length
342 VELOCITY_PARAM(ValPktLen, "Receiving or Drop invalid 802.3 frame");
344 #define WOL_OPT_DEF 0
345 #define WOL_OPT_MIN 0
346 #define WOL_OPT_MAX 7
347 /* wol_opts[] is used for controlling wake on lan behavior.
348 0: Wake up if recevied a magic packet. (Default)
349 1: Wake up if link status is on/off.
350 2: Wake up if recevied an arp packet.
351 4: Wake up if recevied any unicast packet.
352 Those value can be sumed up to support more than one option.
354 VELOCITY_PARAM(wol_opts, "Wake On Lan options");
356 static int rx_copybreak = 200;
357 module_param(rx_copybreak, int, 0644);
358 MODULE_PARM_DESC(rx_copybreak, "Copy breakpoint for copy-only-tiny-frames");
361 * Internal board variants. At the moment we have only one
363 static struct velocity_info_tbl chip_info_table[] = {
364 {CHIP_TYPE_VT6110, "VIA Networking Velocity Family Gigabit Ethernet Adapter", 1, 0x00FFFFFFUL},
369 * Describe the PCI device identifiers that we support in this
370 * device driver. Used for hotplug autoloading.
372 static const struct pci_device_id velocity_id_table[] __devinitdata = {
373 { PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_612X) },
377 MODULE_DEVICE_TABLE(pci, velocity_id_table);
380 * get_chip_name - identifier to name
381 * @id: chip identifier
383 * Given a chip identifier return a suitable description. Returns
384 * a pointer a static string valid while the driver is loaded.
386 static const char __devinit *get_chip_name(enum chip_type chip_id)
389 for (i = 0; chip_info_table[i].name != NULL; i++)
390 if (chip_info_table[i].chip_id == chip_id)
392 return chip_info_table[i].name;
396 * velocity_remove1 - device unplug
397 * @pdev: PCI device being removed
399 * Device unload callback. Called on an unplug or on module
400 * unload for each active device that is present. Disconnects
401 * the device from the network layer and frees all the resources
403 static void __devexit velocity_remove1(struct pci_dev *pdev)
405 struct net_device *dev = pci_get_drvdata(pdev);
406 struct velocity_info *vptr = netdev_priv(dev);
408 unregister_netdev(dev);
409 iounmap(vptr->mac_regs);
410 pci_release_regions(pdev);
411 pci_disable_device(pdev);
412 pci_set_drvdata(pdev, NULL);
419 * velocity_set_int_opt - parser for integer options
420 * @opt: pointer to option value
421 * @val: value the user requested (or -1 for default)
422 * @min: lowest value allowed
423 * @max: highest value allowed
424 * @def: default value
425 * @name: property name
428 * Set an integer property in the module options. This function does
429 * all the verification and checking as well as reporting so that
430 * we don't duplicate code for each option.
432 static void __devinit velocity_set_int_opt(int *opt, int val, int min, int max, int def, char *name, const char *devname)
436 else if (val < min || val > max) {
437 VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: the value of parameter %s is invalid, the valid range is (%d-%d)\n",
438 devname, name, min, max);
441 VELOCITY_PRT(MSG_LEVEL_INFO, KERN_INFO "%s: set value of parameter %s to %d\n",
448 * velocity_set_bool_opt - parser for boolean options
449 * @opt: pointer to option value
450 * @val: value the user requested (or -1 for default)
451 * @def: default value (yes/no)
452 * @flag: numeric value to set for true.
453 * @name: property name
456 * Set a boolean property in the module options. This function does
457 * all the verification and checking as well as reporting so that
458 * we don't duplicate code for each option.
460 static void __devinit velocity_set_bool_opt(u32 *opt, int val, int def, u32 flag, char *name, const char *devname)
464 *opt |= (def ? flag : 0);
465 else if (val < 0 || val > 1) {
466 printk(KERN_NOTICE "%s: the value of parameter %s is invalid, the valid range is (0-1)\n",
468 *opt |= (def ? flag : 0);
470 printk(KERN_INFO "%s: set parameter %s to %s\n",
471 devname, name, val ? "TRUE" : "FALSE");
472 *opt |= (val ? flag : 0);
477 * velocity_get_options - set options on device
478 * @opts: option structure for the device
479 * @index: index of option to use in module options array
480 * @devname: device name
482 * Turn the module and command options into a single structure
483 * for the current device
485 static void __devinit velocity_get_options(struct velocity_opt *opts, int index, const char *devname)
488 velocity_set_int_opt(&opts->rx_thresh, rx_thresh[index], RX_THRESH_MIN, RX_THRESH_MAX, RX_THRESH_DEF, "rx_thresh", devname);
489 velocity_set_int_opt(&opts->DMA_length, DMA_length[index], DMA_LENGTH_MIN, DMA_LENGTH_MAX, DMA_LENGTH_DEF, "DMA_length", devname);
490 velocity_set_int_opt(&opts->numrx, RxDescriptors[index], RX_DESC_MIN, RX_DESC_MAX, RX_DESC_DEF, "RxDescriptors", devname);
491 velocity_set_int_opt(&opts->numtx, TxDescriptors[index], TX_DESC_MIN, TX_DESC_MAX, TX_DESC_DEF, "TxDescriptors", devname);
493 velocity_set_bool_opt(&opts->flags, txcsum_offload[index], TX_CSUM_DEF, VELOCITY_FLAGS_TX_CSUM, "txcsum_offload", devname);
494 velocity_set_int_opt(&opts->flow_cntl, flow_control[index], FLOW_CNTL_MIN, FLOW_CNTL_MAX, FLOW_CNTL_DEF, "flow_control", devname);
495 velocity_set_bool_opt(&opts->flags, IP_byte_align[index], IP_ALIG_DEF, VELOCITY_FLAGS_IP_ALIGN, "IP_byte_align", devname);
496 velocity_set_bool_opt(&opts->flags, ValPktLen[index], VAL_PKT_LEN_DEF, VELOCITY_FLAGS_VAL_PKT_LEN, "ValPktLen", devname);
497 velocity_set_int_opt((int *) &opts->spd_dpx, speed_duplex[index], MED_LNK_MIN, MED_LNK_MAX, MED_LNK_DEF, "Media link mode", devname);
498 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);
499 opts->numrx = (opts->numrx & ~3);
503 * velocity_init_cam_filter - initialise CAM
504 * @vptr: velocity to program
506 * Initialize the content addressable memory used for filters. Load
507 * appropriately according to the presence of VLAN
509 static void velocity_init_cam_filter(struct velocity_info *vptr)
511 struct mac_regs __iomem *regs = vptr->mac_regs;
513 /* Turn on MCFG_PQEN, turn off MCFG_RTGOPT */
514 WORD_REG_BITS_SET(MCFG_PQEN, MCFG_RTGOPT, ®s->MCFG);
515 WORD_REG_BITS_ON(MCFG_VIDFR, ®s->MCFG);
517 /* Disable all CAMs */
518 memset(vptr->vCAMmask, 0, sizeof(u8) * 8);
519 memset(vptr->mCAMmask, 0, sizeof(u8) * 8);
520 mac_set_vlan_cam_mask(regs, vptr->vCAMmask);
521 mac_set_cam_mask(regs, vptr->mCAMmask);
525 unsigned int vid, i = 0;
527 if (!vlan_group_get_device(vptr->vlgrp, 0))
528 WORD_REG_BITS_ON(MCFG_RTGOPT, ®s->MCFG);
530 for (vid = 1; (vid < VLAN_VID_MASK); vid++) {
531 if (vlan_group_get_device(vptr->vlgrp, vid)) {
532 mac_set_vlan_cam(regs, i, (u8 *) &vid);
533 vptr->vCAMmask[i / 8] |= 0x1 << (i % 8);
534 if (++i >= VCAM_SIZE)
538 mac_set_vlan_cam_mask(regs, vptr->vCAMmask);
542 static void velocity_vlan_rx_register(struct net_device *dev,
543 struct vlan_group *grp)
545 struct velocity_info *vptr = netdev_priv(dev);
550 static void velocity_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
552 struct velocity_info *vptr = netdev_priv(dev);
554 spin_lock_irq(&vptr->lock);
555 velocity_init_cam_filter(vptr);
556 spin_unlock_irq(&vptr->lock);
559 static void velocity_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
561 struct velocity_info *vptr = netdev_priv(dev);
563 spin_lock_irq(&vptr->lock);
564 vlan_group_set_device(vptr->vlgrp, vid, NULL);
565 velocity_init_cam_filter(vptr);
566 spin_unlock_irq(&vptr->lock);
569 static void velocity_init_rx_ring_indexes(struct velocity_info *vptr)
571 vptr->rx.dirty = vptr->rx.filled = vptr->rx.curr = 0;
575 * velocity_rx_reset - handle a receive reset
576 * @vptr: velocity we are resetting
578 * Reset the ownership and status for the receive ring side.
579 * Hand all the receive queue to the NIC.
581 static void velocity_rx_reset(struct velocity_info *vptr)
584 struct mac_regs __iomem *regs = vptr->mac_regs;
587 velocity_init_rx_ring_indexes(vptr);
590 * Init state, all RD entries belong to the NIC
592 for (i = 0; i < vptr->options.numrx; ++i)
593 vptr->rx.ring[i].rdesc0.len |= OWNED_BY_NIC;
595 writew(vptr->options.numrx, ®s->RBRDU);
596 writel(vptr->rx.pool_dma, ®s->RDBaseLo);
597 writew(0, ®s->RDIdx);
598 writew(vptr->options.numrx - 1, ®s->RDCSize);
602 * velocity_get_opt_media_mode - get media selection
603 * @vptr: velocity adapter
605 * Get the media mode stored in EEPROM or module options and load
606 * mii_status accordingly. The requested link state information
609 static u32 velocity_get_opt_media_mode(struct velocity_info *vptr)
613 switch (vptr->options.spd_dpx) {
615 status = VELOCITY_AUTONEG_ENABLE;
617 case SPD_DPX_100_FULL:
618 status = VELOCITY_SPEED_100 | VELOCITY_DUPLEX_FULL;
620 case SPD_DPX_10_FULL:
621 status = VELOCITY_SPEED_10 | VELOCITY_DUPLEX_FULL;
623 case SPD_DPX_100_HALF:
624 status = VELOCITY_SPEED_100;
626 case SPD_DPX_10_HALF:
627 status = VELOCITY_SPEED_10;
630 vptr->mii_status = status;
635 * safe_disable_mii_autopoll - autopoll off
636 * @regs: velocity registers
638 * Turn off the autopoll and wait for it to disable on the chip
640 static void safe_disable_mii_autopoll(struct mac_regs __iomem *regs)
645 writeb(0, ®s->MIICR);
646 for (ww = 0; ww < W_MAX_TIMEOUT; ww++) {
648 if (BYTE_REG_BITS_IS_ON(MIISR_MIDLE, ®s->MIISR))
654 * enable_mii_autopoll - turn on autopolling
655 * @regs: velocity registers
657 * Enable the MII link status autopoll feature on the Velocity
658 * hardware. Wait for it to enable.
660 static void enable_mii_autopoll(struct mac_regs __iomem *regs)
664 writeb(0, &(regs->MIICR));
665 writeb(MIIADR_SWMPL, ®s->MIIADR);
667 for (ii = 0; ii < W_MAX_TIMEOUT; ii++) {
669 if (BYTE_REG_BITS_IS_ON(MIISR_MIDLE, ®s->MIISR))
673 writeb(MIICR_MAUTO, ®s->MIICR);
675 for (ii = 0; ii < W_MAX_TIMEOUT; ii++) {
677 if (!BYTE_REG_BITS_IS_ON(MIISR_MIDLE, ®s->MIISR))
684 * velocity_mii_read - read MII data
685 * @regs: velocity registers
686 * @index: MII register index
687 * @data: buffer for received data
689 * Perform a single read of an MII 16bit register. Returns zero
690 * on success or -ETIMEDOUT if the PHY did not respond.
692 static int velocity_mii_read(struct mac_regs __iomem *regs, u8 index, u16 *data)
697 * Disable MIICR_MAUTO, so that mii addr can be set normally
699 safe_disable_mii_autopoll(regs);
701 writeb(index, ®s->MIIADR);
703 BYTE_REG_BITS_ON(MIICR_RCMD, ®s->MIICR);
705 for (ww = 0; ww < W_MAX_TIMEOUT; ww++) {
706 if (!(readb(®s->MIICR) & MIICR_RCMD))
710 *data = readw(®s->MIIDATA);
712 enable_mii_autopoll(regs);
713 if (ww == W_MAX_TIMEOUT)
720 * mii_check_media_mode - check media state
721 * @regs: velocity registers
723 * Check the current MII status and determine the link status
726 static u32 mii_check_media_mode(struct mac_regs __iomem *regs)
731 if (!MII_REG_BITS_IS_ON(BMSR_LNK, MII_REG_BMSR, regs))
732 status |= VELOCITY_LINK_FAIL;
734 if (MII_REG_BITS_IS_ON(G1000CR_1000FD, MII_REG_G1000CR, regs))
735 status |= VELOCITY_SPEED_1000 | VELOCITY_DUPLEX_FULL;
736 else if (MII_REG_BITS_IS_ON(G1000CR_1000, MII_REG_G1000CR, regs))
737 status |= (VELOCITY_SPEED_1000);
739 velocity_mii_read(regs, MII_REG_ANAR, &ANAR);
740 if (ANAR & ANAR_TXFD)
741 status |= (VELOCITY_SPEED_100 | VELOCITY_DUPLEX_FULL);
742 else if (ANAR & ANAR_TX)
743 status |= VELOCITY_SPEED_100;
744 else if (ANAR & ANAR_10FD)
745 status |= (VELOCITY_SPEED_10 | VELOCITY_DUPLEX_FULL);
747 status |= (VELOCITY_SPEED_10);
750 if (MII_REG_BITS_IS_ON(BMCR_AUTO, MII_REG_BMCR, regs)) {
751 velocity_mii_read(regs, MII_REG_ANAR, &ANAR);
752 if ((ANAR & (ANAR_TXFD | ANAR_TX | ANAR_10FD | ANAR_10))
753 == (ANAR_TXFD | ANAR_TX | ANAR_10FD | ANAR_10)) {
754 if (MII_REG_BITS_IS_ON(G1000CR_1000 | G1000CR_1000FD, MII_REG_G1000CR, regs))
755 status |= VELOCITY_AUTONEG_ENABLE;
763 * velocity_mii_write - write MII data
764 * @regs: velocity registers
765 * @index: MII register index
766 * @data: 16bit data for the MII register
768 * Perform a single write to an MII 16bit register. Returns zero
769 * on success or -ETIMEDOUT if the PHY did not respond.
771 static int velocity_mii_write(struct mac_regs __iomem *regs, u8 mii_addr, u16 data)
776 * Disable MIICR_MAUTO, so that mii addr can be set normally
778 safe_disable_mii_autopoll(regs);
781 writeb(mii_addr, ®s->MIIADR);
783 writew(data, ®s->MIIDATA);
785 /* turn on MIICR_WCMD */
786 BYTE_REG_BITS_ON(MIICR_WCMD, ®s->MIICR);
788 /* W_MAX_TIMEOUT is the timeout period */
789 for (ww = 0; ww < W_MAX_TIMEOUT; ww++) {
791 if (!(readb(®s->MIICR) & MIICR_WCMD))
794 enable_mii_autopoll(regs);
796 if (ww == W_MAX_TIMEOUT)
802 * set_mii_flow_control - flow control setup
803 * @vptr: velocity interface
805 * Set up the flow control on this interface according to
806 * the supplied user/eeprom options.
808 static void set_mii_flow_control(struct velocity_info *vptr)
810 /*Enable or Disable PAUSE in ANAR */
811 switch (vptr->options.flow_cntl) {
813 MII_REG_BITS_OFF(ANAR_PAUSE, MII_REG_ANAR, vptr->mac_regs);
814 MII_REG_BITS_ON(ANAR_ASMDIR, MII_REG_ANAR, vptr->mac_regs);
818 MII_REG_BITS_ON(ANAR_PAUSE, MII_REG_ANAR, vptr->mac_regs);
819 MII_REG_BITS_ON(ANAR_ASMDIR, MII_REG_ANAR, vptr->mac_regs);
822 case FLOW_CNTL_TX_RX:
823 MII_REG_BITS_ON(ANAR_PAUSE, MII_REG_ANAR, vptr->mac_regs);
824 MII_REG_BITS_ON(ANAR_ASMDIR, MII_REG_ANAR, vptr->mac_regs);
827 case FLOW_CNTL_DISABLE:
828 MII_REG_BITS_OFF(ANAR_PAUSE, MII_REG_ANAR, vptr->mac_regs);
829 MII_REG_BITS_OFF(ANAR_ASMDIR, MII_REG_ANAR, vptr->mac_regs);
837 * mii_set_auto_on - autonegotiate on
840 * Enable autonegotation on this interface
842 static void mii_set_auto_on(struct velocity_info *vptr)
844 if (MII_REG_BITS_IS_ON(BMCR_AUTO, MII_REG_BMCR, vptr->mac_regs))
845 MII_REG_BITS_ON(BMCR_REAUTO, MII_REG_BMCR, vptr->mac_regs);
847 MII_REG_BITS_ON(BMCR_AUTO, MII_REG_BMCR, vptr->mac_regs);
850 static u32 check_connection_type(struct mac_regs __iomem *regs)
855 PHYSR0 = readb(®s->PHYSR0);
858 if (!(PHYSR0 & PHYSR0_LINKGD))
859 status|=VELOCITY_LINK_FAIL;
862 if (PHYSR0 & PHYSR0_FDPX)
863 status |= VELOCITY_DUPLEX_FULL;
865 if (PHYSR0 & PHYSR0_SPDG)
866 status |= VELOCITY_SPEED_1000;
867 else if (PHYSR0 & PHYSR0_SPD10)
868 status |= VELOCITY_SPEED_10;
870 status |= VELOCITY_SPEED_100;
872 if (MII_REG_BITS_IS_ON(BMCR_AUTO, MII_REG_BMCR, regs)) {
873 velocity_mii_read(regs, MII_REG_ANAR, &ANAR);
874 if ((ANAR & (ANAR_TXFD | ANAR_TX | ANAR_10FD | ANAR_10))
875 == (ANAR_TXFD | ANAR_TX | ANAR_10FD | ANAR_10)) {
876 if (MII_REG_BITS_IS_ON(G1000CR_1000 | G1000CR_1000FD, MII_REG_G1000CR, regs))
877 status |= VELOCITY_AUTONEG_ENABLE;
887 * velocity_set_media_mode - set media mode
888 * @mii_status: old MII link state
890 * Check the media link state and configure the flow control
891 * PHY and also velocity hardware setup accordingly. In particular
892 * we need to set up CD polling and frame bursting.
894 static int velocity_set_media_mode(struct velocity_info *vptr, u32 mii_status)
897 struct mac_regs __iomem *regs = vptr->mac_regs;
899 vptr->mii_status = mii_check_media_mode(vptr->mac_regs);
900 curr_status = vptr->mii_status & (~VELOCITY_LINK_FAIL);
902 /* Set mii link status */
903 set_mii_flow_control(vptr);
906 Check if new status is consisent with current status
907 if (((mii_status & curr_status) & VELOCITY_AUTONEG_ENABLE)
908 || (mii_status==curr_status)) {
909 vptr->mii_status=mii_check_media_mode(vptr->mac_regs);
910 vptr->mii_status=check_connection_type(vptr->mac_regs);
911 VELOCITY_PRT(MSG_LEVEL_INFO, "Velocity link no change\n");
916 if (PHYID_GET_PHY_ID(vptr->phy_id) == PHYID_CICADA_CS8201)
917 MII_REG_BITS_ON(AUXCR_MDPPS, MII_REG_AUXCR, vptr->mac_regs);
920 * If connection type is AUTO
922 if (mii_status & VELOCITY_AUTONEG_ENABLE) {
923 VELOCITY_PRT(MSG_LEVEL_INFO, "Velocity is AUTO mode\n");
924 /* clear force MAC mode bit */
925 BYTE_REG_BITS_OFF(CHIPGCR_FCMODE, ®s->CHIPGCR);
926 /* set duplex mode of MAC according to duplex mode of MII */
927 MII_REG_BITS_ON(ANAR_TXFD | ANAR_TX | ANAR_10FD | ANAR_10, MII_REG_ANAR, vptr->mac_regs);
928 MII_REG_BITS_ON(G1000CR_1000FD | G1000CR_1000, MII_REG_G1000CR, vptr->mac_regs);
929 MII_REG_BITS_ON(BMCR_SPEED1G, MII_REG_BMCR, vptr->mac_regs);
931 /* enable AUTO-NEGO mode */
932 mii_set_auto_on(vptr);
938 * 1. if it's 3119, disable frame bursting in halfduplex mode
939 * and enable it in fullduplex mode
940 * 2. set correct MII/GMII and half/full duplex mode in CHIPGCR
941 * 3. only enable CD heart beat counter in 10HD mode
944 /* set force MAC mode bit */
945 BYTE_REG_BITS_ON(CHIPGCR_FCMODE, ®s->CHIPGCR);
947 CHIPGCR = readb(®s->CHIPGCR);
948 CHIPGCR &= ~CHIPGCR_FCGMII;
950 if (mii_status & VELOCITY_DUPLEX_FULL) {
951 CHIPGCR |= CHIPGCR_FCFDX;
952 writeb(CHIPGCR, ®s->CHIPGCR);
953 VELOCITY_PRT(MSG_LEVEL_INFO, "set Velocity to forced full mode\n");
954 if (vptr->rev_id < REV_ID_VT3216_A0)
955 BYTE_REG_BITS_OFF(TCR_TB2BDIS, ®s->TCR);
957 CHIPGCR &= ~CHIPGCR_FCFDX;
958 VELOCITY_PRT(MSG_LEVEL_INFO, "set Velocity to forced half mode\n");
959 writeb(CHIPGCR, ®s->CHIPGCR);
960 if (vptr->rev_id < REV_ID_VT3216_A0)
961 BYTE_REG_BITS_ON(TCR_TB2BDIS, ®s->TCR);
964 MII_REG_BITS_OFF(G1000CR_1000FD | G1000CR_1000, MII_REG_G1000CR, vptr->mac_regs);
966 if (!(mii_status & VELOCITY_DUPLEX_FULL) && (mii_status & VELOCITY_SPEED_10))
967 BYTE_REG_BITS_OFF(TESTCFG_HBDIS, ®s->TESTCFG);
969 BYTE_REG_BITS_ON(TESTCFG_HBDIS, ®s->TESTCFG);
971 /* MII_REG_BITS_OFF(BMCR_SPEED1G, MII_REG_BMCR, vptr->mac_regs); */
972 velocity_mii_read(vptr->mac_regs, MII_REG_ANAR, &ANAR);
973 ANAR &= (~(ANAR_TXFD | ANAR_TX | ANAR_10FD | ANAR_10));
974 if (mii_status & VELOCITY_SPEED_100) {
975 if (mii_status & VELOCITY_DUPLEX_FULL)
980 if (mii_status & VELOCITY_DUPLEX_FULL)
985 velocity_mii_write(vptr->mac_regs, MII_REG_ANAR, ANAR);
986 /* enable AUTO-NEGO mode */
987 mii_set_auto_on(vptr);
988 /* MII_REG_BITS_ON(BMCR_AUTO, MII_REG_BMCR, vptr->mac_regs); */
990 /* vptr->mii_status=mii_check_media_mode(vptr->mac_regs); */
991 /* vptr->mii_status=check_connection_type(vptr->mac_regs); */
992 return VELOCITY_LINK_CHANGE;
996 * velocity_print_link_status - link status reporting
997 * @vptr: velocity to report on
999 * Turn the link status of the velocity card into a kernel log
1000 * description of the new link state, detailing speed and duplex
1003 static void velocity_print_link_status(struct velocity_info *vptr)
1006 if (vptr->mii_status & VELOCITY_LINK_FAIL) {
1007 VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: failed to detect cable link\n", vptr->dev->name);
1008 } else if (vptr->options.spd_dpx == SPD_DPX_AUTO) {
1009 VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: Link auto-negotiation", vptr->dev->name);
1011 if (vptr->mii_status & VELOCITY_SPEED_1000)
1012 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 1000M bps");
1013 else if (vptr->mii_status & VELOCITY_SPEED_100)
1014 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 100M bps");
1016 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 10M bps");
1018 if (vptr->mii_status & VELOCITY_DUPLEX_FULL)
1019 VELOCITY_PRT(MSG_LEVEL_INFO, " full duplex\n");
1021 VELOCITY_PRT(MSG_LEVEL_INFO, " half duplex\n");
1023 VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: Link forced", vptr->dev->name);
1024 switch (vptr->options.spd_dpx) {
1025 case SPD_DPX_100_HALF:
1026 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 100M bps half duplex\n");
1028 case SPD_DPX_100_FULL:
1029 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 100M bps full duplex\n");
1031 case SPD_DPX_10_HALF:
1032 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 10M bps half duplex\n");
1034 case SPD_DPX_10_FULL:
1035 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 10M bps full duplex\n");
1044 * enable_flow_control_ability - flow control
1045 * @vptr: veloity to configure
1047 * Set up flow control according to the flow control options
1048 * determined by the eeprom/configuration.
1050 static void enable_flow_control_ability(struct velocity_info *vptr)
1053 struct mac_regs __iomem *regs = vptr->mac_regs;
1055 switch (vptr->options.flow_cntl) {
1057 case FLOW_CNTL_DEFAULT:
1058 if (BYTE_REG_BITS_IS_ON(PHYSR0_RXFLC, ®s->PHYSR0))
1059 writel(CR0_FDXRFCEN, ®s->CR0Set);
1061 writel(CR0_FDXRFCEN, ®s->CR0Clr);
1063 if (BYTE_REG_BITS_IS_ON(PHYSR0_TXFLC, ®s->PHYSR0))
1064 writel(CR0_FDXTFCEN, ®s->CR0Set);
1066 writel(CR0_FDXTFCEN, ®s->CR0Clr);
1070 writel(CR0_FDXTFCEN, ®s->CR0Set);
1071 writel(CR0_FDXRFCEN, ®s->CR0Clr);
1075 writel(CR0_FDXRFCEN, ®s->CR0Set);
1076 writel(CR0_FDXTFCEN, ®s->CR0Clr);
1079 case FLOW_CNTL_TX_RX:
1080 writel(CR0_FDXTFCEN, ®s->CR0Set);
1081 writel(CR0_FDXRFCEN, ®s->CR0Set);
1084 case FLOW_CNTL_DISABLE:
1085 writel(CR0_FDXRFCEN, ®s->CR0Clr);
1086 writel(CR0_FDXTFCEN, ®s->CR0Clr);
1096 * velocity_soft_reset - soft reset
1097 * @vptr: velocity to reset
1099 * Kick off a soft reset of the velocity adapter and then poll
1100 * until the reset sequence has completed before returning.
1102 static int velocity_soft_reset(struct velocity_info *vptr)
1104 struct mac_regs __iomem *regs = vptr->mac_regs;
1107 writel(CR0_SFRST, ®s->CR0Set);
1109 for (i = 0; i < W_MAX_TIMEOUT; i++) {
1111 if (!DWORD_REG_BITS_IS_ON(CR0_SFRST, ®s->CR0Set))
1115 if (i == W_MAX_TIMEOUT) {
1116 writel(CR0_FORSRST, ®s->CR0Set);
1117 /* FIXME: PCI POSTING */
1125 * velocity_set_multi - filter list change callback
1126 * @dev: network device
1128 * Called by the network layer when the filter lists need to change
1129 * for a velocity adapter. Reload the CAMs with the new address
1132 static void velocity_set_multi(struct net_device *dev)
1134 struct velocity_info *vptr = netdev_priv(dev);
1135 struct mac_regs __iomem *regs = vptr->mac_regs;
1138 struct dev_mc_list *mclist;
1140 if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */
1141 writel(0xffffffff, ®s->MARCAM[0]);
1142 writel(0xffffffff, ®s->MARCAM[4]);
1143 rx_mode = (RCR_AM | RCR_AB | RCR_PROM);
1144 } else if ((dev->mc_count > vptr->multicast_limit)
1145 || (dev->flags & IFF_ALLMULTI)) {
1146 writel(0xffffffff, ®s->MARCAM[0]);
1147 writel(0xffffffff, ®s->MARCAM[4]);
1148 rx_mode = (RCR_AM | RCR_AB);
1150 int offset = MCAM_SIZE - vptr->multicast_limit;
1151 mac_get_cam_mask(regs, vptr->mCAMmask);
1153 for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count; i++, mclist = mclist->next) {
1154 mac_set_cam(regs, i + offset, mclist->dmi_addr);
1155 vptr->mCAMmask[(offset + i) / 8] |= 1 << ((offset + i) & 7);
1158 mac_set_cam_mask(regs, vptr->mCAMmask);
1159 rx_mode = RCR_AM | RCR_AB | RCR_AP;
1161 if (dev->mtu > 1500)
1164 BYTE_REG_BITS_ON(rx_mode, ®s->RCR);
1169 * MII access , media link mode setting functions
1173 * mii_init - set up MII
1174 * @vptr: velocity adapter
1175 * @mii_status: links tatus
1177 * Set up the PHY for the current link state.
1179 static void mii_init(struct velocity_info *vptr, u32 mii_status)
1183 switch (PHYID_GET_PHY_ID(vptr->phy_id)) {
1184 case PHYID_CICADA_CS8201:
1186 * Reset to hardware default
1188 MII_REG_BITS_OFF((ANAR_ASMDIR | ANAR_PAUSE), MII_REG_ANAR, vptr->mac_regs);
1190 * Turn on ECHODIS bit in NWay-forced full mode and turn it
1191 * off it in NWay-forced half mode for NWay-forced v.s.
1192 * legacy-forced issue.
1194 if (vptr->mii_status & VELOCITY_DUPLEX_FULL)
1195 MII_REG_BITS_ON(TCSR_ECHODIS, MII_REG_TCSR, vptr->mac_regs);
1197 MII_REG_BITS_OFF(TCSR_ECHODIS, MII_REG_TCSR, vptr->mac_regs);
1199 * Turn on Link/Activity LED enable bit for CIS8201
1201 MII_REG_BITS_ON(PLED_LALBE, MII_REG_PLED, vptr->mac_regs);
1203 case PHYID_VT3216_32BIT:
1204 case PHYID_VT3216_64BIT:
1206 * Reset to hardware default
1208 MII_REG_BITS_ON((ANAR_ASMDIR | ANAR_PAUSE), MII_REG_ANAR, vptr->mac_regs);
1210 * Turn on ECHODIS bit in NWay-forced full mode and turn it
1211 * off it in NWay-forced half mode for NWay-forced v.s.
1212 * legacy-forced issue
1214 if (vptr->mii_status & VELOCITY_DUPLEX_FULL)
1215 MII_REG_BITS_ON(TCSR_ECHODIS, MII_REG_TCSR, vptr->mac_regs);
1217 MII_REG_BITS_OFF(TCSR_ECHODIS, MII_REG_TCSR, vptr->mac_regs);
1220 case PHYID_MARVELL_1000:
1221 case PHYID_MARVELL_1000S:
1223 * Assert CRS on Transmit
1225 MII_REG_BITS_ON(PSCR_ACRSTX, MII_REG_PSCR, vptr->mac_regs);
1227 * Reset to hardware default
1229 MII_REG_BITS_ON((ANAR_ASMDIR | ANAR_PAUSE), MII_REG_ANAR, vptr->mac_regs);
1234 velocity_mii_read(vptr->mac_regs, MII_REG_BMCR, &BMCR);
1235 if (BMCR & BMCR_ISO) {
1237 velocity_mii_write(vptr->mac_regs, MII_REG_BMCR, BMCR);
1242 * setup_queue_timers - Setup interrupt timers
1244 * Setup interrupt frequency during suppression (timeout if the frame
1245 * count isn't filled).
1247 static void setup_queue_timers(struct velocity_info *vptr)
1249 /* Only for newer revisions */
1250 if (vptr->rev_id >= REV_ID_VT3216_A0) {
1251 u8 txqueue_timer = 0;
1252 u8 rxqueue_timer = 0;
1254 if (vptr->mii_status & (VELOCITY_SPEED_1000 |
1255 VELOCITY_SPEED_100)) {
1256 txqueue_timer = vptr->options.txqueue_timer;
1257 rxqueue_timer = vptr->options.rxqueue_timer;
1260 writeb(txqueue_timer, &vptr->mac_regs->TQETMR);
1261 writeb(rxqueue_timer, &vptr->mac_regs->RQETMR);
1265 * setup_adaptive_interrupts - Setup interrupt suppression
1267 * @vptr velocity adapter
1269 * The velocity is able to suppress interrupt during high interrupt load.
1270 * This function turns on that feature.
1272 static void setup_adaptive_interrupts(struct velocity_info *vptr)
1274 struct mac_regs __iomem *regs = vptr->mac_regs;
1275 u16 tx_intsup = vptr->options.tx_intsup;
1276 u16 rx_intsup = vptr->options.rx_intsup;
1278 /* Setup default interrupt mask (will be changed below) */
1279 vptr->int_mask = INT_MASK_DEF;
1281 /* Set Tx Interrupt Suppression Threshold */
1282 writeb(CAMCR_PS0, ®s->CAMCR);
1283 if (tx_intsup != 0) {
1284 vptr->int_mask &= ~(ISR_PTXI | ISR_PTX0I | ISR_PTX1I |
1285 ISR_PTX2I | ISR_PTX3I);
1286 writew(tx_intsup, ®s->ISRCTL);
1288 writew(ISRCTL_TSUPDIS, ®s->ISRCTL);
1290 /* Set Rx Interrupt Suppression Threshold */
1291 writeb(CAMCR_PS1, ®s->CAMCR);
1292 if (rx_intsup != 0) {
1293 vptr->int_mask &= ~ISR_PRXI;
1294 writew(rx_intsup, ®s->ISRCTL);
1296 writew(ISRCTL_RSUPDIS, ®s->ISRCTL);
1298 /* Select page to interrupt hold timer */
1299 writeb(0, ®s->CAMCR);
1303 * velocity_init_registers - initialise MAC registers
1304 * @vptr: velocity to init
1305 * @type: type of initialisation (hot or cold)
1307 * Initialise the MAC on a reset or on first set up on the
1310 static void velocity_init_registers(struct velocity_info *vptr,
1311 enum velocity_init_type type)
1313 struct mac_regs __iomem *regs = vptr->mac_regs;
1316 mac_wol_reset(regs);
1319 case VELOCITY_INIT_RESET:
1320 case VELOCITY_INIT_WOL:
1322 netif_stop_queue(vptr->dev);
1325 * Reset RX to prevent RX pointer not on the 4X location
1327 velocity_rx_reset(vptr);
1328 mac_rx_queue_run(regs);
1329 mac_rx_queue_wake(regs);
1331 mii_status = velocity_get_opt_media_mode(vptr);
1332 if (velocity_set_media_mode(vptr, mii_status) != VELOCITY_LINK_CHANGE) {
1333 velocity_print_link_status(vptr);
1334 if (!(vptr->mii_status & VELOCITY_LINK_FAIL))
1335 netif_wake_queue(vptr->dev);
1338 enable_flow_control_ability(vptr);
1340 mac_clear_isr(regs);
1341 writel(CR0_STOP, ®s->CR0Clr);
1342 writel((CR0_DPOLL | CR0_TXON | CR0_RXON | CR0_STRT),
1347 case VELOCITY_INIT_COLD:
1352 velocity_soft_reset(vptr);
1355 mac_eeprom_reload(regs);
1356 for (i = 0; i < 6; i++)
1357 writeb(vptr->dev->dev_addr[i], &(regs->PAR[i]));
1360 * clear Pre_ACPI bit.
1362 BYTE_REG_BITS_OFF(CFGA_PACPI, &(regs->CFGA));
1363 mac_set_rx_thresh(regs, vptr->options.rx_thresh);
1364 mac_set_dma_length(regs, vptr->options.DMA_length);
1366 writeb(WOLCFG_SAM | WOLCFG_SAB, ®s->WOLCFGSet);
1368 * Back off algorithm use original IEEE standard
1370 BYTE_REG_BITS_SET(CFGB_OFSET, (CFGB_CRANDOM | CFGB_CAP | CFGB_MBA | CFGB_BAKOPT), ®s->CFGB);
1375 velocity_init_cam_filter(vptr);
1378 * Set packet filter: Receive directed and broadcast address
1380 velocity_set_multi(vptr->dev);
1383 * Enable MII auto-polling
1385 enable_mii_autopoll(regs);
1387 setup_adaptive_interrupts(vptr);
1389 writel(vptr->rx.pool_dma, ®s->RDBaseLo);
1390 writew(vptr->options.numrx - 1, ®s->RDCSize);
1391 mac_rx_queue_run(regs);
1392 mac_rx_queue_wake(regs);
1394 writew(vptr->options.numtx - 1, ®s->TDCSize);
1396 for (i = 0; i < vptr->tx.numq; i++) {
1397 writel(vptr->tx.pool_dma[i], ®s->TDBaseLo[i]);
1398 mac_tx_queue_run(regs, i);
1401 init_flow_control_register(vptr);
1403 writel(CR0_STOP, ®s->CR0Clr);
1404 writel((CR0_DPOLL | CR0_TXON | CR0_RXON | CR0_STRT), ®s->CR0Set);
1406 mii_status = velocity_get_opt_media_mode(vptr);
1407 netif_stop_queue(vptr->dev);
1409 mii_init(vptr, mii_status);
1411 if (velocity_set_media_mode(vptr, mii_status) != VELOCITY_LINK_CHANGE) {
1412 velocity_print_link_status(vptr);
1413 if (!(vptr->mii_status & VELOCITY_LINK_FAIL))
1414 netif_wake_queue(vptr->dev);
1417 enable_flow_control_ability(vptr);
1418 mac_hw_mibs_init(regs);
1419 mac_write_int_mask(vptr->int_mask, regs);
1420 mac_clear_isr(regs);
1425 static void velocity_give_many_rx_descs(struct velocity_info *vptr)
1427 struct mac_regs __iomem *regs = vptr->mac_regs;
1428 int avail, dirty, unusable;
1431 * RD number must be equal to 4X per hardware spec
1432 * (programming guide rev 1.20, p.13)
1434 if (vptr->rx.filled < 4)
1439 unusable = vptr->rx.filled & 0x0003;
1440 dirty = vptr->rx.dirty - unusable;
1441 for (avail = vptr->rx.filled & 0xfffc; avail; avail--) {
1442 dirty = (dirty > 0) ? dirty - 1 : vptr->options.numrx - 1;
1443 vptr->rx.ring[dirty].rdesc0.len |= OWNED_BY_NIC;
1446 writew(vptr->rx.filled & 0xfffc, ®s->RBRDU);
1447 vptr->rx.filled = unusable;
1451 * velocity_init_dma_rings - set up DMA rings
1452 * @vptr: Velocity to set up
1454 * Allocate PCI mapped DMA rings for the receive and transmit layer
1457 static int velocity_init_dma_rings(struct velocity_info *vptr)
1459 struct velocity_opt *opt = &vptr->options;
1460 const unsigned int rx_ring_size = opt->numrx * sizeof(struct rx_desc);
1461 const unsigned int tx_ring_size = opt->numtx * sizeof(struct tx_desc);
1462 struct pci_dev *pdev = vptr->pdev;
1463 dma_addr_t pool_dma;
1468 * Allocate all RD/TD rings a single pool.
1470 * pci_alloc_consistent() fulfills the requirement for 64 bytes
1473 pool = pci_alloc_consistent(pdev, tx_ring_size * vptr->tx.numq +
1474 rx_ring_size, &pool_dma);
1476 dev_err(&pdev->dev, "%s : DMA memory allocation failed.\n",
1481 vptr->rx.ring = pool;
1482 vptr->rx.pool_dma = pool_dma;
1484 pool += rx_ring_size;
1485 pool_dma += rx_ring_size;
1487 for (i = 0; i < vptr->tx.numq; i++) {
1488 vptr->tx.rings[i] = pool;
1489 vptr->tx.pool_dma[i] = pool_dma;
1490 pool += tx_ring_size;
1491 pool_dma += tx_ring_size;
1497 static void velocity_set_rxbufsize(struct velocity_info *vptr, int mtu)
1499 vptr->rx.buf_sz = (mtu <= ETH_DATA_LEN) ? PKT_BUF_SZ : mtu + 32;
1503 * velocity_alloc_rx_buf - allocate aligned receive buffer
1507 * Allocate a new full sized buffer for the reception of a frame and
1508 * map it into PCI space for the hardware to use. The hardware
1509 * requires *64* byte alignment of the buffer which makes life
1510 * less fun than would be ideal.
1512 static int velocity_alloc_rx_buf(struct velocity_info *vptr, int idx)
1514 struct rx_desc *rd = &(vptr->rx.ring[idx]);
1515 struct velocity_rd_info *rd_info = &(vptr->rx.info[idx]);
1517 rd_info->skb = dev_alloc_skb(vptr->rx.buf_sz + 64);
1518 if (rd_info->skb == NULL)
1522 * Do the gymnastics to get the buffer head for data at
1525 skb_reserve(rd_info->skb,
1526 64 - ((unsigned long) rd_info->skb->data & 63));
1527 rd_info->skb_dma = pci_map_single(vptr->pdev, rd_info->skb->data,
1528 vptr->rx.buf_sz, PCI_DMA_FROMDEVICE);
1531 * Fill in the descriptor to match
1534 *((u32 *) & (rd->rdesc0)) = 0;
1535 rd->size = cpu_to_le16(vptr->rx.buf_sz) | RX_INTEN;
1536 rd->pa_low = cpu_to_le32(rd_info->skb_dma);
1542 static int velocity_rx_refill(struct velocity_info *vptr)
1544 int dirty = vptr->rx.dirty, done = 0;
1547 struct rx_desc *rd = vptr->rx.ring + dirty;
1549 /* Fine for an all zero Rx desc at init time as well */
1550 if (rd->rdesc0.len & OWNED_BY_NIC)
1553 if (!vptr->rx.info[dirty].skb) {
1554 if (velocity_alloc_rx_buf(vptr, dirty) < 0)
1558 dirty = (dirty < vptr->options.numrx - 1) ? dirty + 1 : 0;
1559 } while (dirty != vptr->rx.curr);
1562 vptr->rx.dirty = dirty;
1563 vptr->rx.filled += done;
1570 * velocity_free_rd_ring - free receive ring
1571 * @vptr: velocity to clean up
1573 * Free the receive buffers for each ring slot and any
1574 * attached socket buffers that need to go away.
1576 static void velocity_free_rd_ring(struct velocity_info *vptr)
1580 if (vptr->rx.info == NULL)
1583 for (i = 0; i < vptr->options.numrx; i++) {
1584 struct velocity_rd_info *rd_info = &(vptr->rx.info[i]);
1585 struct rx_desc *rd = vptr->rx.ring + i;
1587 memset(rd, 0, sizeof(*rd));
1591 pci_unmap_single(vptr->pdev, rd_info->skb_dma, vptr->rx.buf_sz,
1592 PCI_DMA_FROMDEVICE);
1593 rd_info->skb_dma = 0;
1595 dev_kfree_skb(rd_info->skb);
1596 rd_info->skb = NULL;
1599 kfree(vptr->rx.info);
1600 vptr->rx.info = NULL;
1606 * velocity_init_rd_ring - set up receive ring
1607 * @vptr: velocity to configure
1609 * Allocate and set up the receive buffers for each ring slot and
1610 * assign them to the network adapter.
1612 static int velocity_init_rd_ring(struct velocity_info *vptr)
1616 vptr->rx.info = kcalloc(vptr->options.numrx,
1617 sizeof(struct velocity_rd_info), GFP_KERNEL);
1621 velocity_init_rx_ring_indexes(vptr);
1623 if (velocity_rx_refill(vptr) != vptr->options.numrx) {
1624 VELOCITY_PRT(MSG_LEVEL_ERR, KERN_ERR
1625 "%s: failed to allocate RX buffer.\n", vptr->dev->name);
1626 velocity_free_rd_ring(vptr);
1636 * velocity_init_td_ring - set up transmit ring
1639 * Set up the transmit ring and chain the ring pointers together.
1640 * Returns zero on success or a negative posix errno code for
1643 static int velocity_init_td_ring(struct velocity_info *vptr)
1647 /* Init the TD ring entries */
1648 for (j = 0; j < vptr->tx.numq; j++) {
1650 vptr->tx.infos[j] = kcalloc(vptr->options.numtx,
1651 sizeof(struct velocity_td_info),
1653 if (!vptr->tx.infos[j]) {
1655 kfree(vptr->tx.infos[j]);
1659 vptr->tx.tail[j] = vptr->tx.curr[j] = vptr->tx.used[j] = 0;
1665 * velocity_free_dma_rings - free PCI ring pointers
1666 * @vptr: Velocity to free from
1668 * Clean up the PCI ring buffers allocated to this velocity.
1670 static void velocity_free_dma_rings(struct velocity_info *vptr)
1672 const int size = vptr->options.numrx * sizeof(struct rx_desc) +
1673 vptr->options.numtx * sizeof(struct tx_desc) * vptr->tx.numq;
1675 pci_free_consistent(vptr->pdev, size, vptr->rx.ring, vptr->rx.pool_dma);
1679 static int velocity_init_rings(struct velocity_info *vptr, int mtu)
1683 velocity_set_rxbufsize(vptr, mtu);
1685 ret = velocity_init_dma_rings(vptr);
1689 ret = velocity_init_rd_ring(vptr);
1691 goto err_free_dma_rings_0;
1693 ret = velocity_init_td_ring(vptr);
1695 goto err_free_rd_ring_1;
1700 velocity_free_rd_ring(vptr);
1701 err_free_dma_rings_0:
1702 velocity_free_dma_rings(vptr);
1707 * velocity_free_tx_buf - free transmit buffer
1711 * Release an transmit buffer. If the buffer was preallocated then
1712 * recycle it, if not then unmap the buffer.
1714 static void velocity_free_tx_buf(struct velocity_info *vptr,
1715 struct velocity_td_info *tdinfo, struct tx_desc *td)
1717 struct sk_buff *skb = tdinfo->skb;
1720 * Don't unmap the pre-allocated tx_bufs
1722 if (tdinfo->skb_dma) {
1725 for (i = 0; i < tdinfo->nskb_dma; i++) {
1726 size_t pktlen = max_t(size_t, skb->len, ETH_ZLEN);
1728 /* For scatter-gather */
1729 if (skb_shinfo(skb)->nr_frags > 0)
1730 pktlen = max_t(size_t, pktlen,
1731 td->td_buf[i].size & ~TD_QUEUE);
1733 pci_unmap_single(vptr->pdev, tdinfo->skb_dma[i],
1734 le16_to_cpu(pktlen), PCI_DMA_TODEVICE);
1737 dev_kfree_skb_irq(skb);
1743 * FIXME: could we merge this with velocity_free_tx_buf ?
1745 static void velocity_free_td_ring_entry(struct velocity_info *vptr,
1748 struct velocity_td_info *td_info = &(vptr->tx.infos[q][n]);
1751 if (td_info == NULL)
1755 for (i = 0; i < td_info->nskb_dma; i++) {
1756 if (td_info->skb_dma[i]) {
1757 pci_unmap_single(vptr->pdev, td_info->skb_dma[i],
1758 td_info->skb->len, PCI_DMA_TODEVICE);
1759 td_info->skb_dma[i] = 0;
1762 dev_kfree_skb(td_info->skb);
1763 td_info->skb = NULL;
1768 * velocity_free_td_ring - free td ring
1771 * Free up the transmit ring for this particular velocity adapter.
1772 * We free the ring contents but not the ring itself.
1774 static void velocity_free_td_ring(struct velocity_info *vptr)
1778 for (j = 0; j < vptr->tx.numq; j++) {
1779 if (vptr->tx.infos[j] == NULL)
1781 for (i = 0; i < vptr->options.numtx; i++)
1782 velocity_free_td_ring_entry(vptr, j, i);
1784 kfree(vptr->tx.infos[j]);
1785 vptr->tx.infos[j] = NULL;
1790 static void velocity_free_rings(struct velocity_info *vptr)
1792 velocity_free_td_ring(vptr);
1793 velocity_free_rd_ring(vptr);
1794 velocity_free_dma_rings(vptr);
1798 * velocity_error - handle error from controller
1800 * @status: card status
1802 * Process an error report from the hardware and attempt to recover
1803 * the card itself. At the moment we cannot recover from some
1804 * theoretically impossible errors but this could be fixed using
1805 * the pci_device_failed logic to bounce the hardware
1808 static void velocity_error(struct velocity_info *vptr, int status)
1811 if (status & ISR_TXSTLI) {
1812 struct mac_regs __iomem *regs = vptr->mac_regs;
1814 printk(KERN_ERR "TD structure error TDindex=%hx\n", readw(®s->TDIdx[0]));
1815 BYTE_REG_BITS_ON(TXESR_TDSTR, ®s->TXESR);
1816 writew(TRDCSR_RUN, ®s->TDCSRClr);
1817 netif_stop_queue(vptr->dev);
1819 /* FIXME: port over the pci_device_failed code and use it
1823 if (status & ISR_SRCI) {
1824 struct mac_regs __iomem *regs = vptr->mac_regs;
1827 if (vptr->options.spd_dpx == SPD_DPX_AUTO) {
1828 vptr->mii_status = check_connection_type(regs);
1831 * If it is a 3119, disable frame bursting in
1832 * halfduplex mode and enable it in fullduplex
1835 if (vptr->rev_id < REV_ID_VT3216_A0) {
1836 if (vptr->mii_status & VELOCITY_DUPLEX_FULL)
1837 BYTE_REG_BITS_ON(TCR_TB2BDIS, ®s->TCR);
1839 BYTE_REG_BITS_OFF(TCR_TB2BDIS, ®s->TCR);
1842 * Only enable CD heart beat counter in 10HD mode
1844 if (!(vptr->mii_status & VELOCITY_DUPLEX_FULL) && (vptr->mii_status & VELOCITY_SPEED_10))
1845 BYTE_REG_BITS_OFF(TESTCFG_HBDIS, ®s->TESTCFG);
1847 BYTE_REG_BITS_ON(TESTCFG_HBDIS, ®s->TESTCFG);
1849 setup_queue_timers(vptr);
1852 * Get link status from PHYSR0
1854 linked = readb(®s->PHYSR0) & PHYSR0_LINKGD;
1857 vptr->mii_status &= ~VELOCITY_LINK_FAIL;
1858 netif_carrier_on(vptr->dev);
1860 vptr->mii_status |= VELOCITY_LINK_FAIL;
1861 netif_carrier_off(vptr->dev);
1864 velocity_print_link_status(vptr);
1865 enable_flow_control_ability(vptr);
1868 * Re-enable auto-polling because SRCI will disable
1872 enable_mii_autopoll(regs);
1874 if (vptr->mii_status & VELOCITY_LINK_FAIL)
1875 netif_stop_queue(vptr->dev);
1877 netif_wake_queue(vptr->dev);
1880 if (status & ISR_MIBFI)
1881 velocity_update_hw_mibs(vptr);
1882 if (status & ISR_LSTEI)
1883 mac_rx_queue_wake(vptr->mac_regs);
1887 * tx_srv - transmit interrupt service
1891 * Scan the queues looking for transmitted packets that
1892 * we can complete and clean up. Update any statistics as
1895 static int velocity_tx_srv(struct velocity_info *vptr, u32 status)
1902 struct velocity_td_info *tdinfo;
1903 struct net_device_stats *stats = &vptr->dev->stats;
1905 for (qnum = 0; qnum < vptr->tx.numq; qnum++) {
1906 for (idx = vptr->tx.tail[qnum]; vptr->tx.used[qnum] > 0;
1907 idx = (idx + 1) % vptr->options.numtx) {
1912 td = &(vptr->tx.rings[qnum][idx]);
1913 tdinfo = &(vptr->tx.infos[qnum][idx]);
1915 if (td->tdesc0.len & OWNED_BY_NIC)
1921 if (td->tdesc0.TSR & TSR0_TERR) {
1923 stats->tx_dropped++;
1924 if (td->tdesc0.TSR & TSR0_CDH)
1925 stats->tx_heartbeat_errors++;
1926 if (td->tdesc0.TSR & TSR0_CRS)
1927 stats->tx_carrier_errors++;
1928 if (td->tdesc0.TSR & TSR0_ABT)
1929 stats->tx_aborted_errors++;
1930 if (td->tdesc0.TSR & TSR0_OWC)
1931 stats->tx_window_errors++;
1933 stats->tx_packets++;
1934 stats->tx_bytes += tdinfo->skb->len;
1936 velocity_free_tx_buf(vptr, tdinfo, td);
1937 vptr->tx.used[qnum]--;
1939 vptr->tx.tail[qnum] = idx;
1941 if (AVAIL_TD(vptr, qnum) < 1)
1945 * Look to see if we should kick the transmit network
1946 * layer for more work.
1948 if (netif_queue_stopped(vptr->dev) && (full == 0)
1949 && (!(vptr->mii_status & VELOCITY_LINK_FAIL))) {
1950 netif_wake_queue(vptr->dev);
1956 * velocity_rx_csum - checksum process
1957 * @rd: receive packet descriptor
1958 * @skb: network layer packet buffer
1960 * Process the status bits for the received packet and determine
1961 * if the checksum was computed and verified by the hardware
1963 static inline void velocity_rx_csum(struct rx_desc *rd, struct sk_buff *skb)
1965 skb->ip_summed = CHECKSUM_NONE;
1967 if (rd->rdesc1.CSM & CSM_IPKT) {
1968 if (rd->rdesc1.CSM & CSM_IPOK) {
1969 if ((rd->rdesc1.CSM & CSM_TCPKT) ||
1970 (rd->rdesc1.CSM & CSM_UDPKT)) {
1971 if (!(rd->rdesc1.CSM & CSM_TUPOK))
1974 skb->ip_summed = CHECKSUM_UNNECESSARY;
1980 * velocity_rx_copy - in place Rx copy for small packets
1981 * @rx_skb: network layer packet buffer candidate
1982 * @pkt_size: received data size
1983 * @rd: receive packet descriptor
1984 * @dev: network device
1986 * Replace the current skb that is scheduled for Rx processing by a
1987 * shorter, immediatly allocated skb, if the received packet is small
1988 * enough. This function returns a negative value if the received
1989 * packet is too big or if memory is exhausted.
1991 static int velocity_rx_copy(struct sk_buff **rx_skb, int pkt_size,
1992 struct velocity_info *vptr)
1995 if (pkt_size < rx_copybreak) {
1996 struct sk_buff *new_skb;
1998 new_skb = netdev_alloc_skb_ip_align(vptr->dev, pkt_size);
2000 new_skb->ip_summed = rx_skb[0]->ip_summed;
2001 skb_copy_from_linear_data(*rx_skb, new_skb->data, pkt_size);
2011 * velocity_iph_realign - IP header alignment
2012 * @vptr: velocity we are handling
2013 * @skb: network layer packet buffer
2014 * @pkt_size: received data size
2016 * Align IP header on a 2 bytes boundary. This behavior can be
2017 * configured by the user.
2019 static inline void velocity_iph_realign(struct velocity_info *vptr,
2020 struct sk_buff *skb, int pkt_size)
2022 if (vptr->flags & VELOCITY_FLAGS_IP_ALIGN) {
2023 memmove(skb->data + 2, skb->data, pkt_size);
2024 skb_reserve(skb, 2);
2030 * velocity_receive_frame - received packet processor
2031 * @vptr: velocity we are handling
2034 * A packet has arrived. We process the packet and if appropriate
2035 * pass the frame up the network stack
2037 static int velocity_receive_frame(struct velocity_info *vptr, int idx)
2039 void (*pci_action)(struct pci_dev *, dma_addr_t, size_t, int);
2040 struct net_device_stats *stats = &vptr->dev->stats;
2041 struct velocity_rd_info *rd_info = &(vptr->rx.info[idx]);
2042 struct rx_desc *rd = &(vptr->rx.ring[idx]);
2043 int pkt_len = le16_to_cpu(rd->rdesc0.len) & 0x3fff;
2044 struct sk_buff *skb;
2046 if (rd->rdesc0.RSR & (RSR_STP | RSR_EDP)) {
2047 VELOCITY_PRT(MSG_LEVEL_VERBOSE, KERN_ERR " %s : the received frame span multple RDs.\n", vptr->dev->name);
2048 stats->rx_length_errors++;
2052 if (rd->rdesc0.RSR & RSR_MAR)
2057 pci_dma_sync_single_for_cpu(vptr->pdev, rd_info->skb_dma,
2058 vptr->rx.buf_sz, PCI_DMA_FROMDEVICE);
2061 * Drop frame not meeting IEEE 802.3
2064 if (vptr->flags & VELOCITY_FLAGS_VAL_PKT_LEN) {
2065 if (rd->rdesc0.RSR & RSR_RL) {
2066 stats->rx_length_errors++;
2071 pci_action = pci_dma_sync_single_for_device;
2073 velocity_rx_csum(rd, skb);
2075 if (velocity_rx_copy(&skb, pkt_len, vptr) < 0) {
2076 velocity_iph_realign(vptr, skb, pkt_len);
2077 pci_action = pci_unmap_single;
2078 rd_info->skb = NULL;
2081 pci_action(vptr->pdev, rd_info->skb_dma, vptr->rx.buf_sz,
2082 PCI_DMA_FROMDEVICE);
2084 skb_put(skb, pkt_len - 4);
2085 skb->protocol = eth_type_trans(skb, vptr->dev);
2087 if (vptr->vlgrp && (rd->rdesc0.RSR & RSR_DETAG)) {
2088 vlan_hwaccel_rx(skb, vptr->vlgrp,
2089 swab16(le16_to_cpu(rd->rdesc1.PQTAG)));
2093 stats->rx_bytes += pkt_len;
2100 * velocity_rx_srv - service RX interrupt
2102 * @status: adapter status (unused)
2104 * Walk the receive ring of the velocity adapter and remove
2105 * any received packets from the receive queue. Hand the ring
2106 * slots back to the adapter for reuse.
2108 static int velocity_rx_srv(struct velocity_info *vptr, int status,
2111 struct net_device_stats *stats = &vptr->dev->stats;
2112 int rd_curr = vptr->rx.curr;
2115 while (works < budget_left) {
2116 struct rx_desc *rd = vptr->rx.ring + rd_curr;
2118 if (!vptr->rx.info[rd_curr].skb)
2121 if (rd->rdesc0.len & OWNED_BY_NIC)
2127 * Don't drop CE or RL error frame although RXOK is off
2129 if (rd->rdesc0.RSR & (RSR_RXOK | RSR_CE | RSR_RL)) {
2130 if (velocity_receive_frame(vptr, rd_curr) < 0)
2131 stats->rx_dropped++;
2133 if (rd->rdesc0.RSR & RSR_CRC)
2134 stats->rx_crc_errors++;
2135 if (rd->rdesc0.RSR & RSR_FAE)
2136 stats->rx_frame_errors++;
2138 stats->rx_dropped++;
2141 rd->size |= RX_INTEN;
2144 if (rd_curr >= vptr->options.numrx)
2149 vptr->rx.curr = rd_curr;
2151 if ((works > 0) && (velocity_rx_refill(vptr) > 0))
2152 velocity_give_many_rx_descs(vptr);
2158 static int velocity_poll(struct napi_struct *napi, int budget)
2160 struct velocity_info *vptr = container_of(napi,
2161 struct velocity_info, napi);
2162 unsigned int rx_done;
2165 spin_lock(&vptr->lock);
2166 isr_status = mac_read_isr(vptr->mac_regs);
2168 /* Ack the interrupt */
2169 mac_write_isr(vptr->mac_regs, isr_status);
2170 if (isr_status & (~(ISR_PRXI | ISR_PPRXI | ISR_PTXI | ISR_PPTXI)))
2171 velocity_error(vptr, isr_status);
2174 * Do rx and tx twice for performance (taken from the VIA
2175 * out-of-tree driver).
2177 rx_done = velocity_rx_srv(vptr, isr_status, budget / 2);
2178 velocity_tx_srv(vptr, isr_status);
2179 rx_done += velocity_rx_srv(vptr, isr_status, budget - rx_done);
2180 velocity_tx_srv(vptr, isr_status);
2182 spin_unlock(&vptr->lock);
2184 /* If budget not fully consumed, exit the polling mode */
2185 if (rx_done < budget) {
2186 napi_complete(napi);
2187 mac_enable_int(vptr->mac_regs);
2194 * velocity_intr - interrupt callback
2195 * @irq: interrupt number
2196 * @dev_instance: interrupting device
2198 * Called whenever an interrupt is generated by the velocity
2199 * adapter IRQ line. We may not be the source of the interrupt
2200 * and need to identify initially if we are, and if not exit as
2201 * efficiently as possible.
2203 static irqreturn_t velocity_intr(int irq, void *dev_instance)
2205 struct net_device *dev = dev_instance;
2206 struct velocity_info *vptr = netdev_priv(dev);
2209 spin_lock(&vptr->lock);
2210 isr_status = mac_read_isr(vptr->mac_regs);
2213 if (isr_status == 0) {
2214 spin_unlock(&vptr->lock);
2218 if (likely(napi_schedule_prep(&vptr->napi))) {
2219 mac_disable_int(vptr->mac_regs);
2220 __napi_schedule(&vptr->napi);
2222 spin_unlock(&vptr->lock);
2228 * velocity_open - interface activation callback
2229 * @dev: network layer device to open
2231 * Called when the network layer brings the interface up. Returns
2232 * a negative posix error code on failure, or zero on success.
2234 * All the ring allocation and set up is done on open for this
2235 * adapter to minimise memory usage when inactive
2237 static int velocity_open(struct net_device *dev)
2239 struct velocity_info *vptr = netdev_priv(dev);
2242 ret = velocity_init_rings(vptr, dev->mtu);
2246 /* Ensure chip is running */
2247 pci_set_power_state(vptr->pdev, PCI_D0);
2249 velocity_give_many_rx_descs(vptr);
2251 velocity_init_registers(vptr, VELOCITY_INIT_COLD);
2253 ret = request_irq(vptr->pdev->irq, velocity_intr, IRQF_SHARED,
2256 /* Power down the chip */
2257 pci_set_power_state(vptr->pdev, PCI_D3hot);
2258 velocity_free_rings(vptr);
2262 mac_enable_int(vptr->mac_regs);
2263 netif_start_queue(dev);
2264 napi_enable(&vptr->napi);
2265 vptr->flags |= VELOCITY_FLAGS_OPENED;
2271 * velocity_shutdown - shut down the chip
2272 * @vptr: velocity to deactivate
2274 * Shuts down the internal operations of the velocity and
2275 * disables interrupts, autopolling, transmit and receive
2277 static void velocity_shutdown(struct velocity_info *vptr)
2279 struct mac_regs __iomem *regs = vptr->mac_regs;
2280 mac_disable_int(regs);
2281 writel(CR0_STOP, ®s->CR0Set);
2282 writew(0xFFFF, ®s->TDCSRClr);
2283 writeb(0xFF, ®s->RDCSRClr);
2284 safe_disable_mii_autopoll(regs);
2285 mac_clear_isr(regs);
2289 * velocity_change_mtu - MTU change callback
2290 * @dev: network device
2291 * @new_mtu: desired MTU
2293 * Handle requests from the networking layer for MTU change on
2294 * this interface. It gets called on a change by the network layer.
2295 * Return zero for success or negative posix error code.
2297 static int velocity_change_mtu(struct net_device *dev, int new_mtu)
2299 struct velocity_info *vptr = netdev_priv(dev);
2302 if ((new_mtu < VELOCITY_MIN_MTU) || new_mtu > (VELOCITY_MAX_MTU)) {
2303 VELOCITY_PRT(MSG_LEVEL_ERR, KERN_NOTICE "%s: Invalid MTU.\n",
2309 if (!netif_running(dev)) {
2314 if (dev->mtu != new_mtu) {
2315 struct velocity_info *tmp_vptr;
2316 unsigned long flags;
2320 tmp_vptr = kzalloc(sizeof(*tmp_vptr), GFP_KERNEL);
2326 tmp_vptr->dev = dev;
2327 tmp_vptr->pdev = vptr->pdev;
2328 tmp_vptr->options = vptr->options;
2329 tmp_vptr->tx.numq = vptr->tx.numq;
2331 ret = velocity_init_rings(tmp_vptr, new_mtu);
2333 goto out_free_tmp_vptr_1;
2335 spin_lock_irqsave(&vptr->lock, flags);
2337 netif_stop_queue(dev);
2338 velocity_shutdown(vptr);
2343 vptr->rx = tmp_vptr->rx;
2344 vptr->tx = tmp_vptr->tx;
2351 velocity_give_many_rx_descs(vptr);
2353 velocity_init_registers(vptr, VELOCITY_INIT_COLD);
2355 mac_enable_int(vptr->mac_regs);
2356 netif_start_queue(dev);
2358 spin_unlock_irqrestore(&vptr->lock, flags);
2360 velocity_free_rings(tmp_vptr);
2362 out_free_tmp_vptr_1:
2370 * velocity_mii_ioctl - MII ioctl handler
2371 * @dev: network device
2372 * @ifr: the ifreq block for the ioctl
2375 * Process MII requests made via ioctl from the network layer. These
2376 * are used by tools like kudzu to interrogate the link state of the
2379 static int velocity_mii_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
2381 struct velocity_info *vptr = netdev_priv(dev);
2382 struct mac_regs __iomem *regs = vptr->mac_regs;
2383 unsigned long flags;
2384 struct mii_ioctl_data *miidata = if_mii(ifr);
2389 miidata->phy_id = readb(®s->MIIADR) & 0x1f;
2392 if (velocity_mii_read(vptr->mac_regs, miidata->reg_num & 0x1f, &(miidata->val_out)) < 0)
2396 spin_lock_irqsave(&vptr->lock, flags);
2397 err = velocity_mii_write(vptr->mac_regs, miidata->reg_num & 0x1f, miidata->val_in);
2398 spin_unlock_irqrestore(&vptr->lock, flags);
2399 check_connection_type(vptr->mac_regs);
2411 * velocity_ioctl - ioctl entry point
2412 * @dev: network device
2413 * @rq: interface request ioctl
2414 * @cmd: command code
2416 * Called when the user issues an ioctl request to the network
2417 * device in question. The velocity interface supports MII.
2419 static int velocity_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2421 struct velocity_info *vptr = netdev_priv(dev);
2424 /* If we are asked for information and the device is power
2425 saving then we need to bring the device back up to talk to it */
2427 if (!netif_running(dev))
2428 pci_set_power_state(vptr->pdev, PCI_D0);
2431 case SIOCGMIIPHY: /* Get address of MII PHY in use. */
2432 case SIOCGMIIREG: /* Read MII PHY register. */
2433 case SIOCSMIIREG: /* Write to MII PHY register. */
2434 ret = velocity_mii_ioctl(dev, rq, cmd);
2440 if (!netif_running(dev))
2441 pci_set_power_state(vptr->pdev, PCI_D3hot);
2448 * velocity_get_status - statistics callback
2449 * @dev: network device
2451 * Callback from the network layer to allow driver statistics
2452 * to be resynchronized with hardware collected state. In the
2453 * case of the velocity we need to pull the MIB counters from
2454 * the hardware into the counters before letting the network
2455 * layer display them.
2457 static struct net_device_stats *velocity_get_stats(struct net_device *dev)
2459 struct velocity_info *vptr = netdev_priv(dev);
2461 /* If the hardware is down, don't touch MII */
2462 if (!netif_running(dev))
2465 spin_lock_irq(&vptr->lock);
2466 velocity_update_hw_mibs(vptr);
2467 spin_unlock_irq(&vptr->lock);
2469 dev->stats.rx_packets = vptr->mib_counter[HW_MIB_ifRxAllPkts];
2470 dev->stats.rx_errors = vptr->mib_counter[HW_MIB_ifRxErrorPkts];
2471 dev->stats.rx_length_errors = vptr->mib_counter[HW_MIB_ifInRangeLengthErrors];
2473 // unsigned long rx_dropped; /* no space in linux buffers */
2474 dev->stats.collisions = vptr->mib_counter[HW_MIB_ifTxEtherCollisions];
2475 /* detailed rx_errors: */
2476 // unsigned long rx_length_errors;
2477 // unsigned long rx_over_errors; /* receiver ring buff overflow */
2478 dev->stats.rx_crc_errors = vptr->mib_counter[HW_MIB_ifRxPktCRCE];
2479 // unsigned long rx_frame_errors; /* recv'd frame alignment error */
2480 // unsigned long rx_fifo_errors; /* recv'r fifo overrun */
2481 // unsigned long rx_missed_errors; /* receiver missed packet */
2483 /* detailed tx_errors */
2484 // unsigned long tx_fifo_errors;
2490 * velocity_close - close adapter callback
2491 * @dev: network device
2493 * Callback from the network layer when the velocity is being
2494 * deactivated by the network layer
2496 static int velocity_close(struct net_device *dev)
2498 struct velocity_info *vptr = netdev_priv(dev);
2500 napi_disable(&vptr->napi);
2501 netif_stop_queue(dev);
2502 velocity_shutdown(vptr);
2504 if (vptr->flags & VELOCITY_FLAGS_WOL_ENABLED)
2505 velocity_get_ip(vptr);
2507 free_irq(dev->irq, dev);
2509 /* Power down the chip */
2510 pci_set_power_state(vptr->pdev, PCI_D3hot);
2512 velocity_free_rings(vptr);
2514 vptr->flags &= (~VELOCITY_FLAGS_OPENED);
2519 * velocity_xmit - transmit packet callback
2520 * @skb: buffer to transmit
2521 * @dev: network device
2523 * Called by the networ layer to request a packet is queued to
2524 * the velocity. Returns zero on success.
2526 static netdev_tx_t velocity_xmit(struct sk_buff *skb,
2527 struct net_device *dev)
2529 struct velocity_info *vptr = netdev_priv(dev);
2531 struct tx_desc *td_ptr;
2532 struct velocity_td_info *tdinfo;
2533 unsigned long flags;
2538 if (skb_padto(skb, ETH_ZLEN))
2541 /* The hardware can handle at most 7 memory segments, so merge
2542 * the skb if there are more */
2543 if (skb_shinfo(skb)->nr_frags > 6 && __skb_linearize(skb)) {
2545 return NETDEV_TX_OK;
2548 pktlen = skb_shinfo(skb)->nr_frags == 0 ?
2549 max_t(unsigned int, skb->len, ETH_ZLEN) :
2552 spin_lock_irqsave(&vptr->lock, flags);
2554 index = vptr->tx.curr[qnum];
2555 td_ptr = &(vptr->tx.rings[qnum][index]);
2556 tdinfo = &(vptr->tx.infos[qnum][index]);
2558 td_ptr->tdesc1.TCR = TCR0_TIC;
2559 td_ptr->td_buf[0].size &= ~TD_QUEUE;
2562 * Map the linear network buffer into PCI space and
2563 * add it to the transmit ring.
2566 tdinfo->skb_dma[0] = pci_map_single(vptr->pdev, skb->data, pktlen, PCI_DMA_TODEVICE);
2567 td_ptr->tdesc0.len = cpu_to_le16(pktlen);
2568 td_ptr->td_buf[0].pa_low = cpu_to_le32(tdinfo->skb_dma[0]);
2569 td_ptr->td_buf[0].pa_high = 0;
2570 td_ptr->td_buf[0].size = cpu_to_le16(pktlen);
2572 /* Handle fragments */
2573 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
2574 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
2576 tdinfo->skb_dma[i + 1] = pci_map_page(vptr->pdev, frag->page,
2577 frag->page_offset, frag->size,
2580 td_ptr->td_buf[i + 1].pa_low = cpu_to_le32(tdinfo->skb_dma[i + 1]);
2581 td_ptr->td_buf[i + 1].pa_high = 0;
2582 td_ptr->td_buf[i + 1].size = cpu_to_le16(frag->size);
2584 tdinfo->nskb_dma = i + 1;
2586 td_ptr->tdesc1.cmd = TCPLS_NORMAL + (tdinfo->nskb_dma + 1) * 16;
2588 if (vptr->vlgrp && vlan_tx_tag_present(skb)) {
2589 td_ptr->tdesc1.vlan = cpu_to_le16(vlan_tx_tag_get(skb));
2590 td_ptr->tdesc1.TCR |= TCR0_VETAG;
2594 * Handle hardware checksum
2596 if ((vptr->flags & VELOCITY_FLAGS_TX_CSUM)
2597 && (skb->ip_summed == CHECKSUM_PARTIAL)) {
2598 const struct iphdr *ip = ip_hdr(skb);
2599 if (ip->protocol == IPPROTO_TCP)
2600 td_ptr->tdesc1.TCR |= TCR0_TCPCK;
2601 else if (ip->protocol == IPPROTO_UDP)
2602 td_ptr->tdesc1.TCR |= (TCR0_UDPCK);
2603 td_ptr->tdesc1.TCR |= TCR0_IPCK;
2608 prev = vptr->options.numtx - 1;
2609 td_ptr->tdesc0.len |= OWNED_BY_NIC;
2610 vptr->tx.used[qnum]++;
2611 vptr->tx.curr[qnum] = (index + 1) % vptr->options.numtx;
2613 if (AVAIL_TD(vptr, qnum) < 1)
2614 netif_stop_queue(dev);
2616 td_ptr = &(vptr->tx.rings[qnum][prev]);
2617 td_ptr->td_buf[0].size |= TD_QUEUE;
2618 mac_tx_queue_wake(vptr->mac_regs, qnum);
2620 dev->trans_start = jiffies;
2621 spin_unlock_irqrestore(&vptr->lock, flags);
2623 return NETDEV_TX_OK;
2627 static const struct net_device_ops velocity_netdev_ops = {
2628 .ndo_open = velocity_open,
2629 .ndo_stop = velocity_close,
2630 .ndo_start_xmit = velocity_xmit,
2631 .ndo_get_stats = velocity_get_stats,
2632 .ndo_validate_addr = eth_validate_addr,
2633 .ndo_set_mac_address = eth_mac_addr,
2634 .ndo_set_multicast_list = velocity_set_multi,
2635 .ndo_change_mtu = velocity_change_mtu,
2636 .ndo_do_ioctl = velocity_ioctl,
2637 .ndo_vlan_rx_add_vid = velocity_vlan_rx_add_vid,
2638 .ndo_vlan_rx_kill_vid = velocity_vlan_rx_kill_vid,
2639 .ndo_vlan_rx_register = velocity_vlan_rx_register,
2643 * velocity_init_info - init private data
2645 * @vptr: Velocity info
2648 * Set up the initial velocity_info struct for the device that has been
2651 static void __devinit velocity_init_info(struct pci_dev *pdev,
2652 struct velocity_info *vptr,
2653 const struct velocity_info_tbl *info)
2655 memset(vptr, 0, sizeof(struct velocity_info));
2658 vptr->chip_id = info->chip_id;
2659 vptr->tx.numq = info->txqueue;
2660 vptr->multicast_limit = MCAM_SIZE;
2661 spin_lock_init(&vptr->lock);
2665 * velocity_get_pci_info - retrieve PCI info for device
2666 * @vptr: velocity device
2667 * @pdev: PCI device it matches
2669 * Retrieve the PCI configuration space data that interests us from
2670 * the kernel PCI layer
2672 static int __devinit velocity_get_pci_info(struct velocity_info *vptr, struct pci_dev *pdev)
2674 vptr->rev_id = pdev->revision;
2676 pci_set_master(pdev);
2678 vptr->ioaddr = pci_resource_start(pdev, 0);
2679 vptr->memaddr = pci_resource_start(pdev, 1);
2681 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_IO)) {
2683 "region #0 is not an I/O resource, aborting.\n");
2687 if ((pci_resource_flags(pdev, 1) & IORESOURCE_IO)) {
2689 "region #1 is an I/O resource, aborting.\n");
2693 if (pci_resource_len(pdev, 1) < VELOCITY_IO_SIZE) {
2694 dev_err(&pdev->dev, "region #1 is too small.\n");
2703 * velocity_print_info - per driver data
2706 * Print per driver data as the kernel driver finds Velocity
2709 static void __devinit velocity_print_info(struct velocity_info *vptr)
2711 struct net_device *dev = vptr->dev;
2713 printk(KERN_INFO "%s: %s\n", dev->name, get_chip_name(vptr->chip_id));
2714 printk(KERN_INFO "%s: Ethernet Address: %2.2X:%2.2X:%2.2X:%2.2X:%2.2X:%2.2X\n",
2716 dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2],
2717 dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5]);
2720 static u32 velocity_get_link(struct net_device *dev)
2722 struct velocity_info *vptr = netdev_priv(dev);
2723 struct mac_regs __iomem *regs = vptr->mac_regs;
2724 return BYTE_REG_BITS_IS_ON(PHYSR0_LINKGD, ®s->PHYSR0) ? 1 : 0;
2729 * velocity_found1 - set up discovered velocity card
2731 * @ent: PCI device table entry that matched
2733 * Configure a discovered adapter from scratch. Return a negative
2734 * errno error code on failure paths.
2736 static int __devinit velocity_found1(struct pci_dev *pdev, const struct pci_device_id *ent)
2738 static int first = 1;
2739 struct net_device *dev;
2741 const char *drv_string;
2742 const struct velocity_info_tbl *info = &chip_info_table[ent->driver_data];
2743 struct velocity_info *vptr;
2744 struct mac_regs __iomem *regs;
2747 /* FIXME: this driver, like almost all other ethernet drivers,
2748 * can support more than MAX_UNITS.
2750 if (velocity_nics >= MAX_UNITS) {
2751 dev_notice(&pdev->dev, "already found %d NICs.\n",
2756 dev = alloc_etherdev(sizeof(struct velocity_info));
2758 dev_err(&pdev->dev, "allocate net device failed.\n");
2762 /* Chain it all together */
2764 SET_NETDEV_DEV(dev, &pdev->dev);
2765 vptr = netdev_priv(dev);
2769 printk(KERN_INFO "%s Ver. %s\n",
2770 VELOCITY_FULL_DRV_NAM, VELOCITY_VERSION);
2771 printk(KERN_INFO "Copyright (c) 2002, 2003 VIA Networking Technologies, Inc.\n");
2772 printk(KERN_INFO "Copyright (c) 2004 Red Hat Inc.\n");
2776 velocity_init_info(pdev, vptr, info);
2780 dev->irq = pdev->irq;
2782 ret = pci_enable_device(pdev);
2786 ret = velocity_get_pci_info(vptr, pdev);
2788 /* error message already printed */
2792 ret = pci_request_regions(pdev, VELOCITY_NAME);
2794 dev_err(&pdev->dev, "No PCI resources.\n");
2798 regs = ioremap(vptr->memaddr, VELOCITY_IO_SIZE);
2801 goto err_release_res;
2804 vptr->mac_regs = regs;
2806 mac_wol_reset(regs);
2808 dev->base_addr = vptr->ioaddr;
2810 for (i = 0; i < 6; i++)
2811 dev->dev_addr[i] = readb(®s->PAR[i]);
2814 drv_string = dev_driver_string(&pdev->dev);
2816 velocity_get_options(&vptr->options, velocity_nics, drv_string);
2819 * Mask out the options cannot be set to the chip
2822 vptr->options.flags &= info->flags;
2825 * Enable the chip specified capbilities
2828 vptr->flags = vptr->options.flags | (info->flags & 0xFF000000UL);
2830 vptr->wol_opts = vptr->options.wol_opts;
2831 vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
2833 vptr->phy_id = MII_GET_PHY_ID(vptr->mac_regs);
2835 dev->irq = pdev->irq;
2836 dev->netdev_ops = &velocity_netdev_ops;
2837 dev->ethtool_ops = &velocity_ethtool_ops;
2838 netif_napi_add(dev, &vptr->napi, velocity_poll, VELOCITY_NAPI_WEIGHT);
2840 dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER |
2843 if (vptr->flags & VELOCITY_FLAGS_TX_CSUM)
2844 dev->features |= NETIF_F_IP_CSUM;
2846 ret = register_netdev(dev);
2850 if (!velocity_get_link(dev)) {
2851 netif_carrier_off(dev);
2852 vptr->mii_status |= VELOCITY_LINK_FAIL;
2855 velocity_print_info(vptr);
2856 pci_set_drvdata(pdev, dev);
2858 /* and leave the chip powered down */
2860 pci_set_power_state(pdev, PCI_D3hot);
2868 pci_release_regions(pdev);
2870 pci_disable_device(pdev);
2879 * wol_calc_crc - WOL CRC
2880 * @pattern: data pattern
2881 * @mask_pattern: mask
2883 * Compute the wake on lan crc hashes for the packet header
2884 * we are interested in.
2886 static u16 wol_calc_crc(int size, u8 *pattern, u8 *mask_pattern)
2892 for (i = 0; i < size; i++) {
2893 mask = mask_pattern[i];
2895 /* Skip this loop if the mask equals to zero */
2899 for (j = 0; j < 8; j++) {
2900 if ((mask & 0x01) == 0) {
2905 crc = crc_ccitt(crc, &(pattern[i * 8 + j]), 1);
2908 /* Finally, invert the result once to get the correct data */
2910 return bitrev32(crc) >> 16;
2914 * velocity_set_wol - set up for wake on lan
2915 * @vptr: velocity to set WOL status on
2917 * Set a card up for wake on lan either by unicast or by
2920 * FIXME: check static buffer is safe here
2922 static int velocity_set_wol(struct velocity_info *vptr)
2924 struct mac_regs __iomem *regs = vptr->mac_regs;
2928 static u32 mask_pattern[2][4] = {
2929 {0x00203000, 0x000003C0, 0x00000000, 0x0000000}, /* ARP */
2930 {0xfffff000, 0xffffffff, 0xffffffff, 0x000ffff} /* Magic Packet */
2933 writew(0xFFFF, ®s->WOLCRClr);
2934 writeb(WOLCFG_SAB | WOLCFG_SAM, ®s->WOLCFGSet);
2935 writew(WOLCR_MAGIC_EN, ®s->WOLCRSet);
2938 if (vptr->wol_opts & VELOCITY_WOL_PHY)
2939 writew((WOLCR_LINKON_EN|WOLCR_LINKOFF_EN), ®s->WOLCRSet);
2942 if (vptr->wol_opts & VELOCITY_WOL_UCAST)
2943 writew(WOLCR_UNICAST_EN, ®s->WOLCRSet);
2945 if (vptr->wol_opts & VELOCITY_WOL_ARP) {
2946 struct arp_packet *arp = (struct arp_packet *) buf;
2948 memset(buf, 0, sizeof(struct arp_packet) + 7);
2950 for (i = 0; i < 4; i++)
2951 writel(mask_pattern[0][i], ®s->ByteMask[0][i]);
2953 arp->type = htons(ETH_P_ARP);
2954 arp->ar_op = htons(1);
2956 memcpy(arp->ar_tip, vptr->ip_addr, 4);
2958 crc = wol_calc_crc((sizeof(struct arp_packet) + 7) / 8, buf,
2959 (u8 *) & mask_pattern[0][0]);
2961 writew(crc, ®s->PatternCRC[0]);
2962 writew(WOLCR_ARP_EN, ®s->WOLCRSet);
2965 BYTE_REG_BITS_ON(PWCFG_WOLTYPE, ®s->PWCFGSet);
2966 BYTE_REG_BITS_ON(PWCFG_LEGACY_WOLEN, ®s->PWCFGSet);
2968 writew(0x0FFF, ®s->WOLSRClr);
2970 if (vptr->mii_status & VELOCITY_AUTONEG_ENABLE) {
2971 if (PHYID_GET_PHY_ID(vptr->phy_id) == PHYID_CICADA_CS8201)
2972 MII_REG_BITS_ON(AUXCR_MDPPS, MII_REG_AUXCR, vptr->mac_regs);
2974 MII_REG_BITS_OFF(G1000CR_1000FD | G1000CR_1000, MII_REG_G1000CR, vptr->mac_regs);
2977 if (vptr->mii_status & VELOCITY_SPEED_1000)
2978 MII_REG_BITS_ON(BMCR_REAUTO, MII_REG_BMCR, vptr->mac_regs);
2980 BYTE_REG_BITS_ON(CHIPGCR_FCMODE, ®s->CHIPGCR);
2984 GCR = readb(®s->CHIPGCR);
2985 GCR = (GCR & ~CHIPGCR_FCGMII) | CHIPGCR_FCFDX;
2986 writeb(GCR, ®s->CHIPGCR);
2989 BYTE_REG_BITS_OFF(ISR_PWEI, ®s->ISR);
2990 /* Turn on SWPTAG just before entering power mode */
2991 BYTE_REG_BITS_ON(STICKHW_SWPTAG, ®s->STICKHW);
2992 /* Go to bed ..... */
2993 BYTE_REG_BITS_ON((STICKHW_DS1 | STICKHW_DS0), ®s->STICKHW);
2999 * velocity_save_context - save registers
3001 * @context: buffer for stored context
3003 * Retrieve the current configuration from the velocity hardware
3004 * and stash it in the context structure, for use by the context
3005 * restore functions. This allows us to save things we need across
3008 static void velocity_save_context(struct velocity_info *vptr, struct velocity_context *context)
3010 struct mac_regs __iomem *regs = vptr->mac_regs;
3012 u8 __iomem *ptr = (u8 __iomem *)regs;
3014 for (i = MAC_REG_PAR; i < MAC_REG_CR0_CLR; i += 4)
3015 *((u32 *) (context->mac_reg + i)) = readl(ptr + i);
3017 for (i = MAC_REG_MAR; i < MAC_REG_TDCSR_CLR; i += 4)
3018 *((u32 *) (context->mac_reg + i)) = readl(ptr + i);
3020 for (i = MAC_REG_RDBASE_LO; i < MAC_REG_FIFO_TEST0; i += 4)
3021 *((u32 *) (context->mac_reg + i)) = readl(ptr + i);
3025 static int velocity_suspend(struct pci_dev *pdev, pm_message_t state)
3027 struct net_device *dev = pci_get_drvdata(pdev);
3028 struct velocity_info *vptr = netdev_priv(dev);
3029 unsigned long flags;
3031 if (!netif_running(vptr->dev))
3034 netif_device_detach(vptr->dev);
3036 spin_lock_irqsave(&vptr->lock, flags);
3037 pci_save_state(pdev);
3039 if (vptr->flags & VELOCITY_FLAGS_WOL_ENABLED) {
3040 velocity_get_ip(vptr);
3041 velocity_save_context(vptr, &vptr->context);
3042 velocity_shutdown(vptr);
3043 velocity_set_wol(vptr);
3044 pci_enable_wake(pdev, PCI_D3hot, 1);
3045 pci_set_power_state(pdev, PCI_D3hot);
3047 velocity_save_context(vptr, &vptr->context);
3048 velocity_shutdown(vptr);
3049 pci_disable_device(pdev);
3050 pci_set_power_state(pdev, pci_choose_state(pdev, state));
3053 pci_set_power_state(pdev, pci_choose_state(pdev, state));
3055 spin_unlock_irqrestore(&vptr->lock, flags);
3060 * velocity_restore_context - restore registers
3062 * @context: buffer for stored context
3064 * Reload the register configuration from the velocity context
3065 * created by velocity_save_context.
3067 static void velocity_restore_context(struct velocity_info *vptr, struct velocity_context *context)
3069 struct mac_regs __iomem *regs = vptr->mac_regs;
3071 u8 __iomem *ptr = (u8 __iomem *)regs;
3073 for (i = MAC_REG_PAR; i < MAC_REG_CR0_SET; i += 4)
3074 writel(*((u32 *) (context->mac_reg + i)), ptr + i);
3077 for (i = MAC_REG_CR1_SET; i < MAC_REG_CR0_CLR; i++) {
3079 writeb(~(*((u8 *) (context->mac_reg + i))), ptr + i + 4);
3081 writeb(*((u8 *) (context->mac_reg + i)), ptr + i);
3084 for (i = MAC_REG_MAR; i < MAC_REG_IMR; i += 4)
3085 writel(*((u32 *) (context->mac_reg + i)), ptr + i);
3087 for (i = MAC_REG_RDBASE_LO; i < MAC_REG_FIFO_TEST0; i += 4)
3088 writel(*((u32 *) (context->mac_reg + i)), ptr + i);
3090 for (i = MAC_REG_TDCSR_SET; i <= MAC_REG_RDCSR_SET; i++)
3091 writeb(*((u8 *) (context->mac_reg + i)), ptr + i);
3094 static int velocity_resume(struct pci_dev *pdev)
3096 struct net_device *dev = pci_get_drvdata(pdev);
3097 struct velocity_info *vptr = netdev_priv(dev);
3098 unsigned long flags;
3101 if (!netif_running(vptr->dev))
3104 pci_set_power_state(pdev, PCI_D0);
3105 pci_enable_wake(pdev, 0, 0);
3106 pci_restore_state(pdev);
3108 mac_wol_reset(vptr->mac_regs);
3110 spin_lock_irqsave(&vptr->lock, flags);
3111 velocity_restore_context(vptr, &vptr->context);
3112 velocity_init_registers(vptr, VELOCITY_INIT_WOL);
3113 mac_disable_int(vptr->mac_regs);
3115 velocity_tx_srv(vptr, 0);
3117 for (i = 0; i < vptr->tx.numq; i++) {
3118 if (vptr->tx.used[i])
3119 mac_tx_queue_wake(vptr->mac_regs, i);
3122 mac_enable_int(vptr->mac_regs);
3123 spin_unlock_irqrestore(&vptr->lock, flags);
3124 netif_device_attach(vptr->dev);
3131 * Definition for our device driver. The PCI layer interface
3132 * uses this to handle all our card discover and plugging
3134 static struct pci_driver velocity_driver = {
3135 .name = VELOCITY_NAME,
3136 .id_table = velocity_id_table,
3137 .probe = velocity_found1,
3138 .remove = __devexit_p(velocity_remove1),
3140 .suspend = velocity_suspend,
3141 .resume = velocity_resume,
3147 * velocity_ethtool_up - pre hook for ethtool
3148 * @dev: network device
3150 * Called before an ethtool operation. We need to make sure the
3151 * chip is out of D3 state before we poke at it.
3153 static int velocity_ethtool_up(struct net_device *dev)
3155 struct velocity_info *vptr = netdev_priv(dev);
3156 if (!netif_running(dev))
3157 pci_set_power_state(vptr->pdev, PCI_D0);
3162 * velocity_ethtool_down - post hook for ethtool
3163 * @dev: network device
3165 * Called after an ethtool operation. Restore the chip back to D3
3166 * state if it isn't running.
3168 static void velocity_ethtool_down(struct net_device *dev)
3170 struct velocity_info *vptr = netdev_priv(dev);
3171 if (!netif_running(dev))
3172 pci_set_power_state(vptr->pdev, PCI_D3hot);
3175 static int velocity_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
3177 struct velocity_info *vptr = netdev_priv(dev);
3178 struct mac_regs __iomem *regs = vptr->mac_regs;
3180 status = check_connection_type(vptr->mac_regs);
3182 cmd->supported = SUPPORTED_TP |
3184 SUPPORTED_10baseT_Half |
3185 SUPPORTED_10baseT_Full |
3186 SUPPORTED_100baseT_Half |
3187 SUPPORTED_100baseT_Full |
3188 SUPPORTED_1000baseT_Half |
3189 SUPPORTED_1000baseT_Full;
3190 if (status & VELOCITY_SPEED_1000)
3191 cmd->speed = SPEED_1000;
3192 else if (status & VELOCITY_SPEED_100)
3193 cmd->speed = SPEED_100;
3195 cmd->speed = SPEED_10;
3196 cmd->autoneg = (status & VELOCITY_AUTONEG_ENABLE) ? AUTONEG_ENABLE : AUTONEG_DISABLE;
3197 cmd->port = PORT_TP;
3198 cmd->transceiver = XCVR_INTERNAL;
3199 cmd->phy_address = readb(®s->MIIADR) & 0x1F;
3201 if (status & VELOCITY_DUPLEX_FULL)
3202 cmd->duplex = DUPLEX_FULL;
3204 cmd->duplex = DUPLEX_HALF;
3209 static int velocity_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
3211 struct velocity_info *vptr = netdev_priv(dev);
3216 curr_status = check_connection_type(vptr->mac_regs);
3217 curr_status &= (~VELOCITY_LINK_FAIL);
3219 new_status |= ((cmd->autoneg) ? VELOCITY_AUTONEG_ENABLE : 0);
3220 new_status |= ((cmd->speed == SPEED_100) ? VELOCITY_SPEED_100 : 0);
3221 new_status |= ((cmd->speed == SPEED_10) ? VELOCITY_SPEED_10 : 0);
3222 new_status |= ((cmd->duplex == DUPLEX_FULL) ? VELOCITY_DUPLEX_FULL : 0);
3224 if ((new_status & VELOCITY_AUTONEG_ENABLE) && (new_status != (curr_status | VELOCITY_AUTONEG_ENABLE)))
3227 velocity_set_media_mode(vptr, new_status);
3232 static void velocity_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
3234 struct velocity_info *vptr = netdev_priv(dev);
3235 strcpy(info->driver, VELOCITY_NAME);
3236 strcpy(info->version, VELOCITY_VERSION);
3237 strcpy(info->bus_info, pci_name(vptr->pdev));
3240 static void velocity_ethtool_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
3242 struct velocity_info *vptr = netdev_priv(dev);
3243 wol->supported = WAKE_PHY | WAKE_MAGIC | WAKE_UCAST | WAKE_ARP;
3244 wol->wolopts |= WAKE_MAGIC;
3246 if (vptr->wol_opts & VELOCITY_WOL_PHY)
3247 wol.wolopts|=WAKE_PHY;
3249 if (vptr->wol_opts & VELOCITY_WOL_UCAST)
3250 wol->wolopts |= WAKE_UCAST;
3251 if (vptr->wol_opts & VELOCITY_WOL_ARP)
3252 wol->wolopts |= WAKE_ARP;
3253 memcpy(&wol->sopass, vptr->wol_passwd, 6);
3256 static int velocity_ethtool_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
3258 struct velocity_info *vptr = netdev_priv(dev);
3260 if (!(wol->wolopts & (WAKE_PHY | WAKE_MAGIC | WAKE_UCAST | WAKE_ARP)))
3262 vptr->wol_opts = VELOCITY_WOL_MAGIC;
3265 if (wol.wolopts & WAKE_PHY) {
3266 vptr->wol_opts|=VELOCITY_WOL_PHY;
3267 vptr->flags |=VELOCITY_FLAGS_WOL_ENABLED;
3271 if (wol->wolopts & WAKE_MAGIC) {
3272 vptr->wol_opts |= VELOCITY_WOL_MAGIC;
3273 vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
3275 if (wol->wolopts & WAKE_UCAST) {
3276 vptr->wol_opts |= VELOCITY_WOL_UCAST;
3277 vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
3279 if (wol->wolopts & WAKE_ARP) {
3280 vptr->wol_opts |= VELOCITY_WOL_ARP;
3281 vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
3283 memcpy(vptr->wol_passwd, wol->sopass, 6);
3287 static u32 velocity_get_msglevel(struct net_device *dev)
3292 static void velocity_set_msglevel(struct net_device *dev, u32 value)
3297 static int get_pending_timer_val(int val)
3299 int mult_bits = val >> 6;
3315 return (val & 0x3f) * mult;
3318 static void set_pending_timer_val(int *val, u32 us)
3324 mult = 1; /* mult with 4 */
3327 if (us >= 0x3f * 4) {
3328 mult = 2; /* mult with 16 */
3331 if (us >= 0x3f * 16) {
3332 mult = 3; /* mult with 64 */
3336 *val = (mult << 6) | ((us >> shift) & 0x3f);
3340 static int velocity_get_coalesce(struct net_device *dev,
3341 struct ethtool_coalesce *ecmd)
3343 struct velocity_info *vptr = netdev_priv(dev);
3345 ecmd->tx_max_coalesced_frames = vptr->options.tx_intsup;
3346 ecmd->rx_max_coalesced_frames = vptr->options.rx_intsup;
3348 ecmd->rx_coalesce_usecs = get_pending_timer_val(vptr->options.rxqueue_timer);
3349 ecmd->tx_coalesce_usecs = get_pending_timer_val(vptr->options.txqueue_timer);
3354 static int velocity_set_coalesce(struct net_device *dev,
3355 struct ethtool_coalesce *ecmd)
3357 struct velocity_info *vptr = netdev_priv(dev);
3358 int max_us = 0x3f * 64;
3361 if (ecmd->tx_coalesce_usecs > max_us)
3363 if (ecmd->rx_coalesce_usecs > max_us)
3366 if (ecmd->tx_max_coalesced_frames > 0xff)
3368 if (ecmd->rx_max_coalesced_frames > 0xff)
3371 vptr->options.rx_intsup = ecmd->rx_max_coalesced_frames;
3372 vptr->options.tx_intsup = ecmd->tx_max_coalesced_frames;
3374 set_pending_timer_val(&vptr->options.rxqueue_timer,
3375 ecmd->rx_coalesce_usecs);
3376 set_pending_timer_val(&vptr->options.txqueue_timer,
3377 ecmd->tx_coalesce_usecs);
3379 /* Setup the interrupt suppression and queue timers */
3380 mac_disable_int(vptr->mac_regs);
3381 setup_adaptive_interrupts(vptr);
3382 setup_queue_timers(vptr);
3384 mac_write_int_mask(vptr->int_mask, vptr->mac_regs);
3385 mac_clear_isr(vptr->mac_regs);
3386 mac_enable_int(vptr->mac_regs);
3391 static const struct ethtool_ops velocity_ethtool_ops = {
3392 .get_settings = velocity_get_settings,
3393 .set_settings = velocity_set_settings,
3394 .get_drvinfo = velocity_get_drvinfo,
3395 .get_wol = velocity_ethtool_get_wol,
3396 .set_wol = velocity_ethtool_set_wol,
3397 .get_msglevel = velocity_get_msglevel,
3398 .set_msglevel = velocity_set_msglevel,
3399 .set_sg = ethtool_op_set_sg,
3400 .get_link = velocity_get_link,
3401 .get_coalesce = velocity_get_coalesce,
3402 .set_coalesce = velocity_set_coalesce,
3403 .begin = velocity_ethtool_up,
3404 .complete = velocity_ethtool_down
3409 static int velocity_netdev_event(struct notifier_block *nb, unsigned long notification, void *ptr)
3411 struct in_ifaddr *ifa = (struct in_ifaddr *) ptr;
3412 struct net_device *dev = ifa->ifa_dev->dev;
3414 if (dev_net(dev) == &init_net &&
3415 dev->netdev_ops == &velocity_netdev_ops)
3416 velocity_get_ip(netdev_priv(dev));
3420 #endif /* CONFIG_INET */
3421 #endif /* CONFIG_PM */
3423 #if defined(CONFIG_PM) && defined(CONFIG_INET)
3424 static struct notifier_block velocity_inetaddr_notifier = {
3425 .notifier_call = velocity_netdev_event,
3428 static void velocity_register_notifier(void)
3430 register_inetaddr_notifier(&velocity_inetaddr_notifier);
3433 static void velocity_unregister_notifier(void)
3435 unregister_inetaddr_notifier(&velocity_inetaddr_notifier);
3440 #define velocity_register_notifier() do {} while (0)
3441 #define velocity_unregister_notifier() do {} while (0)
3443 #endif /* defined(CONFIG_PM) && defined(CONFIG_INET) */
3446 * velocity_init_module - load time function
3448 * Called when the velocity module is loaded. The PCI driver
3449 * is registered with the PCI layer, and in turn will call
3450 * the probe functions for each velocity adapter installed
3453 static int __init velocity_init_module(void)
3457 velocity_register_notifier();
3458 ret = pci_register_driver(&velocity_driver);
3460 velocity_unregister_notifier();
3465 * velocity_cleanup - module unload
3467 * When the velocity hardware is unloaded this function is called.
3468 * It will clean up the notifiers and the unregister the PCI
3469 * driver interface for this hardware. This in turn cleans up
3470 * all discovered interfaces before returning from the function
3472 static void __exit velocity_cleanup_module(void)
3474 velocity_unregister_notifier();
3475 pci_unregister_driver(&velocity_driver);
3478 module_init(velocity_init_module);
3479 module_exit(velocity_cleanup_module);