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 ((dev->mc_count > 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; mclist && i < dev->mc_count; i++, mclist = mclist->next) {
1145 mac_set_cam(regs, i + offset, mclist->dmi_addr);
1146 vptr->mCAMmask[(offset + i) / 8] |= 1 << ((offset + i) & 7);
1149 mac_set_cam_mask(regs, vptr->mCAMmask);
1150 rx_mode = RCR_AM | RCR_AB | RCR_AP;
1152 if (dev->mtu > 1500)
1155 BYTE_REG_BITS_ON(rx_mode, ®s->RCR);
1160 * MII access , media link mode setting functions
1164 * mii_init - set up MII
1165 * @vptr: velocity adapter
1166 * @mii_status: links tatus
1168 * Set up the PHY for the current link state.
1170 static void mii_init(struct velocity_info *vptr, u32 mii_status)
1174 switch (PHYID_GET_PHY_ID(vptr->phy_id)) {
1175 case PHYID_CICADA_CS8201:
1177 * Reset to hardware default
1179 MII_REG_BITS_OFF((ANAR_ASMDIR | ANAR_PAUSE), MII_REG_ANAR, vptr->mac_regs);
1181 * Turn on ECHODIS bit in NWay-forced full mode and turn it
1182 * off it in NWay-forced half mode for NWay-forced v.s.
1183 * legacy-forced issue.
1185 if (vptr->mii_status & VELOCITY_DUPLEX_FULL)
1186 MII_REG_BITS_ON(TCSR_ECHODIS, MII_REG_TCSR, vptr->mac_regs);
1188 MII_REG_BITS_OFF(TCSR_ECHODIS, MII_REG_TCSR, vptr->mac_regs);
1190 * Turn on Link/Activity LED enable bit for CIS8201
1192 MII_REG_BITS_ON(PLED_LALBE, MII_REG_PLED, vptr->mac_regs);
1194 case PHYID_VT3216_32BIT:
1195 case PHYID_VT3216_64BIT:
1197 * Reset to hardware default
1199 MII_REG_BITS_ON((ANAR_ASMDIR | ANAR_PAUSE), MII_REG_ANAR, vptr->mac_regs);
1201 * Turn on ECHODIS bit in NWay-forced full mode and turn it
1202 * off it in NWay-forced half mode for NWay-forced v.s.
1203 * legacy-forced issue
1205 if (vptr->mii_status & VELOCITY_DUPLEX_FULL)
1206 MII_REG_BITS_ON(TCSR_ECHODIS, MII_REG_TCSR, vptr->mac_regs);
1208 MII_REG_BITS_OFF(TCSR_ECHODIS, MII_REG_TCSR, vptr->mac_regs);
1211 case PHYID_MARVELL_1000:
1212 case PHYID_MARVELL_1000S:
1214 * Assert CRS on Transmit
1216 MII_REG_BITS_ON(PSCR_ACRSTX, MII_REG_PSCR, vptr->mac_regs);
1218 * Reset to hardware default
1220 MII_REG_BITS_ON((ANAR_ASMDIR | ANAR_PAUSE), MII_REG_ANAR, vptr->mac_regs);
1225 velocity_mii_read(vptr->mac_regs, MII_REG_BMCR, &BMCR);
1226 if (BMCR & BMCR_ISO) {
1228 velocity_mii_write(vptr->mac_regs, MII_REG_BMCR, BMCR);
1233 * setup_queue_timers - Setup interrupt timers
1235 * Setup interrupt frequency during suppression (timeout if the frame
1236 * count isn't filled).
1238 static void setup_queue_timers(struct velocity_info *vptr)
1240 /* Only for newer revisions */
1241 if (vptr->rev_id >= REV_ID_VT3216_A0) {
1242 u8 txqueue_timer = 0;
1243 u8 rxqueue_timer = 0;
1245 if (vptr->mii_status & (VELOCITY_SPEED_1000 |
1246 VELOCITY_SPEED_100)) {
1247 txqueue_timer = vptr->options.txqueue_timer;
1248 rxqueue_timer = vptr->options.rxqueue_timer;
1251 writeb(txqueue_timer, &vptr->mac_regs->TQETMR);
1252 writeb(rxqueue_timer, &vptr->mac_regs->RQETMR);
1256 * setup_adaptive_interrupts - Setup interrupt suppression
1258 * @vptr velocity adapter
1260 * The velocity is able to suppress interrupt during high interrupt load.
1261 * This function turns on that feature.
1263 static void setup_adaptive_interrupts(struct velocity_info *vptr)
1265 struct mac_regs __iomem *regs = vptr->mac_regs;
1266 u16 tx_intsup = vptr->options.tx_intsup;
1267 u16 rx_intsup = vptr->options.rx_intsup;
1269 /* Setup default interrupt mask (will be changed below) */
1270 vptr->int_mask = INT_MASK_DEF;
1272 /* Set Tx Interrupt Suppression Threshold */
1273 writeb(CAMCR_PS0, ®s->CAMCR);
1274 if (tx_intsup != 0) {
1275 vptr->int_mask &= ~(ISR_PTXI | ISR_PTX0I | ISR_PTX1I |
1276 ISR_PTX2I | ISR_PTX3I);
1277 writew(tx_intsup, ®s->ISRCTL);
1279 writew(ISRCTL_TSUPDIS, ®s->ISRCTL);
1281 /* Set Rx Interrupt Suppression Threshold */
1282 writeb(CAMCR_PS1, ®s->CAMCR);
1283 if (rx_intsup != 0) {
1284 vptr->int_mask &= ~ISR_PRXI;
1285 writew(rx_intsup, ®s->ISRCTL);
1287 writew(ISRCTL_RSUPDIS, ®s->ISRCTL);
1289 /* Select page to interrupt hold timer */
1290 writeb(0, ®s->CAMCR);
1294 * velocity_init_registers - initialise MAC registers
1295 * @vptr: velocity to init
1296 * @type: type of initialisation (hot or cold)
1298 * Initialise the MAC on a reset or on first set up on the
1301 static void velocity_init_registers(struct velocity_info *vptr,
1302 enum velocity_init_type type)
1304 struct mac_regs __iomem *regs = vptr->mac_regs;
1307 mac_wol_reset(regs);
1310 case VELOCITY_INIT_RESET:
1311 case VELOCITY_INIT_WOL:
1313 netif_stop_queue(vptr->dev);
1316 * Reset RX to prevent RX pointer not on the 4X location
1318 velocity_rx_reset(vptr);
1319 mac_rx_queue_run(regs);
1320 mac_rx_queue_wake(regs);
1322 mii_status = velocity_get_opt_media_mode(vptr);
1323 if (velocity_set_media_mode(vptr, mii_status) != VELOCITY_LINK_CHANGE) {
1324 velocity_print_link_status(vptr);
1325 if (!(vptr->mii_status & VELOCITY_LINK_FAIL))
1326 netif_wake_queue(vptr->dev);
1329 enable_flow_control_ability(vptr);
1331 mac_clear_isr(regs);
1332 writel(CR0_STOP, ®s->CR0Clr);
1333 writel((CR0_DPOLL | CR0_TXON | CR0_RXON | CR0_STRT),
1338 case VELOCITY_INIT_COLD:
1343 velocity_soft_reset(vptr);
1346 mac_eeprom_reload(regs);
1347 for (i = 0; i < 6; i++)
1348 writeb(vptr->dev->dev_addr[i], &(regs->PAR[i]));
1351 * clear Pre_ACPI bit.
1353 BYTE_REG_BITS_OFF(CFGA_PACPI, &(regs->CFGA));
1354 mac_set_rx_thresh(regs, vptr->options.rx_thresh);
1355 mac_set_dma_length(regs, vptr->options.DMA_length);
1357 writeb(WOLCFG_SAM | WOLCFG_SAB, ®s->WOLCFGSet);
1359 * Back off algorithm use original IEEE standard
1361 BYTE_REG_BITS_SET(CFGB_OFSET, (CFGB_CRANDOM | CFGB_CAP | CFGB_MBA | CFGB_BAKOPT), ®s->CFGB);
1366 velocity_init_cam_filter(vptr);
1369 * Set packet filter: Receive directed and broadcast address
1371 velocity_set_multi(vptr->dev);
1374 * Enable MII auto-polling
1376 enable_mii_autopoll(regs);
1378 setup_adaptive_interrupts(vptr);
1380 writel(vptr->rx.pool_dma, ®s->RDBaseLo);
1381 writew(vptr->options.numrx - 1, ®s->RDCSize);
1382 mac_rx_queue_run(regs);
1383 mac_rx_queue_wake(regs);
1385 writew(vptr->options.numtx - 1, ®s->TDCSize);
1387 for (i = 0; i < vptr->tx.numq; i++) {
1388 writel(vptr->tx.pool_dma[i], ®s->TDBaseLo[i]);
1389 mac_tx_queue_run(regs, i);
1392 init_flow_control_register(vptr);
1394 writel(CR0_STOP, ®s->CR0Clr);
1395 writel((CR0_DPOLL | CR0_TXON | CR0_RXON | CR0_STRT), ®s->CR0Set);
1397 mii_status = velocity_get_opt_media_mode(vptr);
1398 netif_stop_queue(vptr->dev);
1400 mii_init(vptr, mii_status);
1402 if (velocity_set_media_mode(vptr, mii_status) != VELOCITY_LINK_CHANGE) {
1403 velocity_print_link_status(vptr);
1404 if (!(vptr->mii_status & VELOCITY_LINK_FAIL))
1405 netif_wake_queue(vptr->dev);
1408 enable_flow_control_ability(vptr);
1409 mac_hw_mibs_init(regs);
1410 mac_write_int_mask(vptr->int_mask, regs);
1411 mac_clear_isr(regs);
1416 static void velocity_give_many_rx_descs(struct velocity_info *vptr)
1418 struct mac_regs __iomem *regs = vptr->mac_regs;
1419 int avail, dirty, unusable;
1422 * RD number must be equal to 4X per hardware spec
1423 * (programming guide rev 1.20, p.13)
1425 if (vptr->rx.filled < 4)
1430 unusable = vptr->rx.filled & 0x0003;
1431 dirty = vptr->rx.dirty - unusable;
1432 for (avail = vptr->rx.filled & 0xfffc; avail; avail--) {
1433 dirty = (dirty > 0) ? dirty - 1 : vptr->options.numrx - 1;
1434 vptr->rx.ring[dirty].rdesc0.len |= OWNED_BY_NIC;
1437 writew(vptr->rx.filled & 0xfffc, ®s->RBRDU);
1438 vptr->rx.filled = unusable;
1442 * velocity_init_dma_rings - set up DMA rings
1443 * @vptr: Velocity to set up
1445 * Allocate PCI mapped DMA rings for the receive and transmit layer
1448 static int velocity_init_dma_rings(struct velocity_info *vptr)
1450 struct velocity_opt *opt = &vptr->options;
1451 const unsigned int rx_ring_size = opt->numrx * sizeof(struct rx_desc);
1452 const unsigned int tx_ring_size = opt->numtx * sizeof(struct tx_desc);
1453 struct pci_dev *pdev = vptr->pdev;
1454 dma_addr_t pool_dma;
1459 * Allocate all RD/TD rings a single pool.
1461 * pci_alloc_consistent() fulfills the requirement for 64 bytes
1464 pool = pci_alloc_consistent(pdev, tx_ring_size * vptr->tx.numq +
1465 rx_ring_size, &pool_dma);
1467 dev_err(&pdev->dev, "%s : DMA memory allocation failed.\n",
1472 vptr->rx.ring = pool;
1473 vptr->rx.pool_dma = pool_dma;
1475 pool += rx_ring_size;
1476 pool_dma += rx_ring_size;
1478 for (i = 0; i < vptr->tx.numq; i++) {
1479 vptr->tx.rings[i] = pool;
1480 vptr->tx.pool_dma[i] = pool_dma;
1481 pool += tx_ring_size;
1482 pool_dma += tx_ring_size;
1488 static void velocity_set_rxbufsize(struct velocity_info *vptr, int mtu)
1490 vptr->rx.buf_sz = (mtu <= ETH_DATA_LEN) ? PKT_BUF_SZ : mtu + 32;
1494 * velocity_alloc_rx_buf - allocate aligned receive buffer
1498 * Allocate a new full sized buffer for the reception of a frame and
1499 * map it into PCI space for the hardware to use. The hardware
1500 * requires *64* byte alignment of the buffer which makes life
1501 * less fun than would be ideal.
1503 static int velocity_alloc_rx_buf(struct velocity_info *vptr, int idx)
1505 struct rx_desc *rd = &(vptr->rx.ring[idx]);
1506 struct velocity_rd_info *rd_info = &(vptr->rx.info[idx]);
1508 rd_info->skb = dev_alloc_skb(vptr->rx.buf_sz + 64);
1509 if (rd_info->skb == NULL)
1513 * Do the gymnastics to get the buffer head for data at
1516 skb_reserve(rd_info->skb,
1517 64 - ((unsigned long) rd_info->skb->data & 63));
1518 rd_info->skb_dma = pci_map_single(vptr->pdev, rd_info->skb->data,
1519 vptr->rx.buf_sz, PCI_DMA_FROMDEVICE);
1522 * Fill in the descriptor to match
1525 *((u32 *) & (rd->rdesc0)) = 0;
1526 rd->size = cpu_to_le16(vptr->rx.buf_sz) | RX_INTEN;
1527 rd->pa_low = cpu_to_le32(rd_info->skb_dma);
1533 static int velocity_rx_refill(struct velocity_info *vptr)
1535 int dirty = vptr->rx.dirty, done = 0;
1538 struct rx_desc *rd = vptr->rx.ring + dirty;
1540 /* Fine for an all zero Rx desc at init time as well */
1541 if (rd->rdesc0.len & OWNED_BY_NIC)
1544 if (!vptr->rx.info[dirty].skb) {
1545 if (velocity_alloc_rx_buf(vptr, dirty) < 0)
1549 dirty = (dirty < vptr->options.numrx - 1) ? dirty + 1 : 0;
1550 } while (dirty != vptr->rx.curr);
1553 vptr->rx.dirty = dirty;
1554 vptr->rx.filled += done;
1561 * velocity_free_rd_ring - free receive ring
1562 * @vptr: velocity to clean up
1564 * Free the receive buffers for each ring slot and any
1565 * attached socket buffers that need to go away.
1567 static void velocity_free_rd_ring(struct velocity_info *vptr)
1571 if (vptr->rx.info == NULL)
1574 for (i = 0; i < vptr->options.numrx; i++) {
1575 struct velocity_rd_info *rd_info = &(vptr->rx.info[i]);
1576 struct rx_desc *rd = vptr->rx.ring + i;
1578 memset(rd, 0, sizeof(*rd));
1582 pci_unmap_single(vptr->pdev, rd_info->skb_dma, vptr->rx.buf_sz,
1583 PCI_DMA_FROMDEVICE);
1584 rd_info->skb_dma = 0;
1586 dev_kfree_skb(rd_info->skb);
1587 rd_info->skb = NULL;
1590 kfree(vptr->rx.info);
1591 vptr->rx.info = NULL;
1597 * velocity_init_rd_ring - set up receive ring
1598 * @vptr: velocity to configure
1600 * Allocate and set up the receive buffers for each ring slot and
1601 * assign them to the network adapter.
1603 static int velocity_init_rd_ring(struct velocity_info *vptr)
1607 vptr->rx.info = kcalloc(vptr->options.numrx,
1608 sizeof(struct velocity_rd_info), GFP_KERNEL);
1612 velocity_init_rx_ring_indexes(vptr);
1614 if (velocity_rx_refill(vptr) != vptr->options.numrx) {
1615 VELOCITY_PRT(MSG_LEVEL_ERR, KERN_ERR
1616 "%s: failed to allocate RX buffer.\n", vptr->dev->name);
1617 velocity_free_rd_ring(vptr);
1627 * velocity_init_td_ring - set up transmit ring
1630 * Set up the transmit ring and chain the ring pointers together.
1631 * Returns zero on success or a negative posix errno code for
1634 static int velocity_init_td_ring(struct velocity_info *vptr)
1638 /* Init the TD ring entries */
1639 for (j = 0; j < vptr->tx.numq; j++) {
1641 vptr->tx.infos[j] = kcalloc(vptr->options.numtx,
1642 sizeof(struct velocity_td_info),
1644 if (!vptr->tx.infos[j]) {
1646 kfree(vptr->tx.infos[j]);
1650 vptr->tx.tail[j] = vptr->tx.curr[j] = vptr->tx.used[j] = 0;
1656 * velocity_free_dma_rings - free PCI ring pointers
1657 * @vptr: Velocity to free from
1659 * Clean up the PCI ring buffers allocated to this velocity.
1661 static void velocity_free_dma_rings(struct velocity_info *vptr)
1663 const int size = vptr->options.numrx * sizeof(struct rx_desc) +
1664 vptr->options.numtx * sizeof(struct tx_desc) * vptr->tx.numq;
1666 pci_free_consistent(vptr->pdev, size, vptr->rx.ring, vptr->rx.pool_dma);
1670 static int velocity_init_rings(struct velocity_info *vptr, int mtu)
1674 velocity_set_rxbufsize(vptr, mtu);
1676 ret = velocity_init_dma_rings(vptr);
1680 ret = velocity_init_rd_ring(vptr);
1682 goto err_free_dma_rings_0;
1684 ret = velocity_init_td_ring(vptr);
1686 goto err_free_rd_ring_1;
1691 velocity_free_rd_ring(vptr);
1692 err_free_dma_rings_0:
1693 velocity_free_dma_rings(vptr);
1698 * velocity_free_tx_buf - free transmit buffer
1702 * Release an transmit buffer. If the buffer was preallocated then
1703 * recycle it, if not then unmap the buffer.
1705 static void velocity_free_tx_buf(struct velocity_info *vptr,
1706 struct velocity_td_info *tdinfo, struct tx_desc *td)
1708 struct sk_buff *skb = tdinfo->skb;
1711 * Don't unmap the pre-allocated tx_bufs
1713 if (tdinfo->skb_dma) {
1716 for (i = 0; i < tdinfo->nskb_dma; i++) {
1717 size_t pktlen = max_t(size_t, skb->len, ETH_ZLEN);
1719 /* For scatter-gather */
1720 if (skb_shinfo(skb)->nr_frags > 0)
1721 pktlen = max_t(size_t, pktlen,
1722 td->td_buf[i].size & ~TD_QUEUE);
1724 pci_unmap_single(vptr->pdev, tdinfo->skb_dma[i],
1725 le16_to_cpu(pktlen), PCI_DMA_TODEVICE);
1728 dev_kfree_skb_irq(skb);
1734 * FIXME: could we merge this with velocity_free_tx_buf ?
1736 static void velocity_free_td_ring_entry(struct velocity_info *vptr,
1739 struct velocity_td_info *td_info = &(vptr->tx.infos[q][n]);
1742 if (td_info == NULL)
1746 for (i = 0; i < td_info->nskb_dma; i++) {
1747 if (td_info->skb_dma[i]) {
1748 pci_unmap_single(vptr->pdev, td_info->skb_dma[i],
1749 td_info->skb->len, PCI_DMA_TODEVICE);
1750 td_info->skb_dma[i] = 0;
1753 dev_kfree_skb(td_info->skb);
1754 td_info->skb = NULL;
1759 * velocity_free_td_ring - free td ring
1762 * Free up the transmit ring for this particular velocity adapter.
1763 * We free the ring contents but not the ring itself.
1765 static void velocity_free_td_ring(struct velocity_info *vptr)
1769 for (j = 0; j < vptr->tx.numq; j++) {
1770 if (vptr->tx.infos[j] == NULL)
1772 for (i = 0; i < vptr->options.numtx; i++)
1773 velocity_free_td_ring_entry(vptr, j, i);
1775 kfree(vptr->tx.infos[j]);
1776 vptr->tx.infos[j] = NULL;
1781 static void velocity_free_rings(struct velocity_info *vptr)
1783 velocity_free_td_ring(vptr);
1784 velocity_free_rd_ring(vptr);
1785 velocity_free_dma_rings(vptr);
1789 * velocity_error - handle error from controller
1791 * @status: card status
1793 * Process an error report from the hardware and attempt to recover
1794 * the card itself. At the moment we cannot recover from some
1795 * theoretically impossible errors but this could be fixed using
1796 * the pci_device_failed logic to bounce the hardware
1799 static void velocity_error(struct velocity_info *vptr, int status)
1802 if (status & ISR_TXSTLI) {
1803 struct mac_regs __iomem *regs = vptr->mac_regs;
1805 printk(KERN_ERR "TD structure error TDindex=%hx\n", readw(®s->TDIdx[0]));
1806 BYTE_REG_BITS_ON(TXESR_TDSTR, ®s->TXESR);
1807 writew(TRDCSR_RUN, ®s->TDCSRClr);
1808 netif_stop_queue(vptr->dev);
1810 /* FIXME: port over the pci_device_failed code and use it
1814 if (status & ISR_SRCI) {
1815 struct mac_regs __iomem *regs = vptr->mac_regs;
1818 if (vptr->options.spd_dpx == SPD_DPX_AUTO) {
1819 vptr->mii_status = check_connection_type(regs);
1822 * If it is a 3119, disable frame bursting in
1823 * halfduplex mode and enable it in fullduplex
1826 if (vptr->rev_id < REV_ID_VT3216_A0) {
1827 if (vptr->mii_status & VELOCITY_DUPLEX_FULL)
1828 BYTE_REG_BITS_ON(TCR_TB2BDIS, ®s->TCR);
1830 BYTE_REG_BITS_OFF(TCR_TB2BDIS, ®s->TCR);
1833 * Only enable CD heart beat counter in 10HD mode
1835 if (!(vptr->mii_status & VELOCITY_DUPLEX_FULL) && (vptr->mii_status & VELOCITY_SPEED_10))
1836 BYTE_REG_BITS_OFF(TESTCFG_HBDIS, ®s->TESTCFG);
1838 BYTE_REG_BITS_ON(TESTCFG_HBDIS, ®s->TESTCFG);
1840 setup_queue_timers(vptr);
1843 * Get link status from PHYSR0
1845 linked = readb(®s->PHYSR0) & PHYSR0_LINKGD;
1848 vptr->mii_status &= ~VELOCITY_LINK_FAIL;
1849 netif_carrier_on(vptr->dev);
1851 vptr->mii_status |= VELOCITY_LINK_FAIL;
1852 netif_carrier_off(vptr->dev);
1855 velocity_print_link_status(vptr);
1856 enable_flow_control_ability(vptr);
1859 * Re-enable auto-polling because SRCI will disable
1863 enable_mii_autopoll(regs);
1865 if (vptr->mii_status & VELOCITY_LINK_FAIL)
1866 netif_stop_queue(vptr->dev);
1868 netif_wake_queue(vptr->dev);
1871 if (status & ISR_MIBFI)
1872 velocity_update_hw_mibs(vptr);
1873 if (status & ISR_LSTEI)
1874 mac_rx_queue_wake(vptr->mac_regs);
1878 * tx_srv - transmit interrupt service
1882 * Scan the queues looking for transmitted packets that
1883 * we can complete and clean up. Update any statistics as
1886 static int velocity_tx_srv(struct velocity_info *vptr, u32 status)
1893 struct velocity_td_info *tdinfo;
1894 struct net_device_stats *stats = &vptr->dev->stats;
1896 for (qnum = 0; qnum < vptr->tx.numq; qnum++) {
1897 for (idx = vptr->tx.tail[qnum]; vptr->tx.used[qnum] > 0;
1898 idx = (idx + 1) % vptr->options.numtx) {
1903 td = &(vptr->tx.rings[qnum][idx]);
1904 tdinfo = &(vptr->tx.infos[qnum][idx]);
1906 if (td->tdesc0.len & OWNED_BY_NIC)
1912 if (td->tdesc0.TSR & TSR0_TERR) {
1914 stats->tx_dropped++;
1915 if (td->tdesc0.TSR & TSR0_CDH)
1916 stats->tx_heartbeat_errors++;
1917 if (td->tdesc0.TSR & TSR0_CRS)
1918 stats->tx_carrier_errors++;
1919 if (td->tdesc0.TSR & TSR0_ABT)
1920 stats->tx_aborted_errors++;
1921 if (td->tdesc0.TSR & TSR0_OWC)
1922 stats->tx_window_errors++;
1924 stats->tx_packets++;
1925 stats->tx_bytes += tdinfo->skb->len;
1927 velocity_free_tx_buf(vptr, tdinfo, td);
1928 vptr->tx.used[qnum]--;
1930 vptr->tx.tail[qnum] = idx;
1932 if (AVAIL_TD(vptr, qnum) < 1)
1936 * Look to see if we should kick the transmit network
1937 * layer for more work.
1939 if (netif_queue_stopped(vptr->dev) && (full == 0) &&
1940 (!(vptr->mii_status & VELOCITY_LINK_FAIL))) {
1941 netif_wake_queue(vptr->dev);
1947 * velocity_rx_csum - checksum process
1948 * @rd: receive packet descriptor
1949 * @skb: network layer packet buffer
1951 * Process the status bits for the received packet and determine
1952 * if the checksum was computed and verified by the hardware
1954 static inline void velocity_rx_csum(struct rx_desc *rd, struct sk_buff *skb)
1956 skb->ip_summed = CHECKSUM_NONE;
1958 if (rd->rdesc1.CSM & CSM_IPKT) {
1959 if (rd->rdesc1.CSM & CSM_IPOK) {
1960 if ((rd->rdesc1.CSM & CSM_TCPKT) ||
1961 (rd->rdesc1.CSM & CSM_UDPKT)) {
1962 if (!(rd->rdesc1.CSM & CSM_TUPOK))
1965 skb->ip_summed = CHECKSUM_UNNECESSARY;
1971 * velocity_rx_copy - in place Rx copy for small packets
1972 * @rx_skb: network layer packet buffer candidate
1973 * @pkt_size: received data size
1974 * @rd: receive packet descriptor
1975 * @dev: network device
1977 * Replace the current skb that is scheduled for Rx processing by a
1978 * shorter, immediatly allocated skb, if the received packet is small
1979 * enough. This function returns a negative value if the received
1980 * packet is too big or if memory is exhausted.
1982 static int velocity_rx_copy(struct sk_buff **rx_skb, int pkt_size,
1983 struct velocity_info *vptr)
1986 if (pkt_size < rx_copybreak) {
1987 struct sk_buff *new_skb;
1989 new_skb = netdev_alloc_skb_ip_align(vptr->dev, pkt_size);
1991 new_skb->ip_summed = rx_skb[0]->ip_summed;
1992 skb_copy_from_linear_data(*rx_skb, new_skb->data, pkt_size);
2002 * velocity_iph_realign - IP header alignment
2003 * @vptr: velocity we are handling
2004 * @skb: network layer packet buffer
2005 * @pkt_size: received data size
2007 * Align IP header on a 2 bytes boundary. This behavior can be
2008 * configured by the user.
2010 static inline void velocity_iph_realign(struct velocity_info *vptr,
2011 struct sk_buff *skb, int pkt_size)
2013 if (vptr->flags & VELOCITY_FLAGS_IP_ALIGN) {
2014 memmove(skb->data + 2, skb->data, pkt_size);
2015 skb_reserve(skb, 2);
2021 * velocity_receive_frame - received packet processor
2022 * @vptr: velocity we are handling
2025 * A packet has arrived. We process the packet and if appropriate
2026 * pass the frame up the network stack
2028 static int velocity_receive_frame(struct velocity_info *vptr, int idx)
2030 void (*pci_action)(struct pci_dev *, dma_addr_t, size_t, int);
2031 struct net_device_stats *stats = &vptr->dev->stats;
2032 struct velocity_rd_info *rd_info = &(vptr->rx.info[idx]);
2033 struct rx_desc *rd = &(vptr->rx.ring[idx]);
2034 int pkt_len = le16_to_cpu(rd->rdesc0.len) & 0x3fff;
2035 struct sk_buff *skb;
2037 if (rd->rdesc0.RSR & (RSR_STP | RSR_EDP)) {
2038 VELOCITY_PRT(MSG_LEVEL_VERBOSE, KERN_ERR " %s : the received frame span multple RDs.\n", vptr->dev->name);
2039 stats->rx_length_errors++;
2043 if (rd->rdesc0.RSR & RSR_MAR)
2048 pci_dma_sync_single_for_cpu(vptr->pdev, rd_info->skb_dma,
2049 vptr->rx.buf_sz, PCI_DMA_FROMDEVICE);
2052 * Drop frame not meeting IEEE 802.3
2055 if (vptr->flags & VELOCITY_FLAGS_VAL_PKT_LEN) {
2056 if (rd->rdesc0.RSR & RSR_RL) {
2057 stats->rx_length_errors++;
2062 pci_action = pci_dma_sync_single_for_device;
2064 velocity_rx_csum(rd, skb);
2066 if (velocity_rx_copy(&skb, pkt_len, vptr) < 0) {
2067 velocity_iph_realign(vptr, skb, pkt_len);
2068 pci_action = pci_unmap_single;
2069 rd_info->skb = NULL;
2072 pci_action(vptr->pdev, rd_info->skb_dma, vptr->rx.buf_sz,
2073 PCI_DMA_FROMDEVICE);
2075 skb_put(skb, pkt_len - 4);
2076 skb->protocol = eth_type_trans(skb, vptr->dev);
2078 if (vptr->vlgrp && (rd->rdesc0.RSR & RSR_DETAG)) {
2079 vlan_hwaccel_rx(skb, vptr->vlgrp,
2080 swab16(le16_to_cpu(rd->rdesc1.PQTAG)));
2084 stats->rx_bytes += pkt_len;
2091 * velocity_rx_srv - service RX interrupt
2093 * @status: adapter status (unused)
2095 * Walk the receive ring of the velocity adapter and remove
2096 * any received packets from the receive queue. Hand the ring
2097 * slots back to the adapter for reuse.
2099 static int velocity_rx_srv(struct velocity_info *vptr, int status,
2102 struct net_device_stats *stats = &vptr->dev->stats;
2103 int rd_curr = vptr->rx.curr;
2106 while (works < budget_left) {
2107 struct rx_desc *rd = vptr->rx.ring + rd_curr;
2109 if (!vptr->rx.info[rd_curr].skb)
2112 if (rd->rdesc0.len & OWNED_BY_NIC)
2118 * Don't drop CE or RL error frame although RXOK is off
2120 if (rd->rdesc0.RSR & (RSR_RXOK | RSR_CE | RSR_RL)) {
2121 if (velocity_receive_frame(vptr, rd_curr) < 0)
2122 stats->rx_dropped++;
2124 if (rd->rdesc0.RSR & RSR_CRC)
2125 stats->rx_crc_errors++;
2126 if (rd->rdesc0.RSR & RSR_FAE)
2127 stats->rx_frame_errors++;
2129 stats->rx_dropped++;
2132 rd->size |= RX_INTEN;
2135 if (rd_curr >= vptr->options.numrx)
2140 vptr->rx.curr = rd_curr;
2142 if ((works > 0) && (velocity_rx_refill(vptr) > 0))
2143 velocity_give_many_rx_descs(vptr);
2149 static int velocity_poll(struct napi_struct *napi, int budget)
2151 struct velocity_info *vptr = container_of(napi,
2152 struct velocity_info, napi);
2153 unsigned int rx_done;
2156 spin_lock(&vptr->lock);
2157 isr_status = mac_read_isr(vptr->mac_regs);
2159 /* Ack the interrupt */
2160 mac_write_isr(vptr->mac_regs, isr_status);
2161 if (isr_status & (~(ISR_PRXI | ISR_PPRXI | ISR_PTXI | ISR_PPTXI)))
2162 velocity_error(vptr, isr_status);
2165 * Do rx and tx twice for performance (taken from the VIA
2166 * out-of-tree driver).
2168 rx_done = velocity_rx_srv(vptr, isr_status, budget / 2);
2169 velocity_tx_srv(vptr, isr_status);
2170 rx_done += velocity_rx_srv(vptr, isr_status, budget - rx_done);
2171 velocity_tx_srv(vptr, isr_status);
2173 spin_unlock(&vptr->lock);
2175 /* If budget not fully consumed, exit the polling mode */
2176 if (rx_done < budget) {
2177 napi_complete(napi);
2178 mac_enable_int(vptr->mac_regs);
2185 * velocity_intr - interrupt callback
2186 * @irq: interrupt number
2187 * @dev_instance: interrupting device
2189 * Called whenever an interrupt is generated by the velocity
2190 * adapter IRQ line. We may not be the source of the interrupt
2191 * and need to identify initially if we are, and if not exit as
2192 * efficiently as possible.
2194 static irqreturn_t velocity_intr(int irq, void *dev_instance)
2196 struct net_device *dev = dev_instance;
2197 struct velocity_info *vptr = netdev_priv(dev);
2200 spin_lock(&vptr->lock);
2201 isr_status = mac_read_isr(vptr->mac_regs);
2204 if (isr_status == 0) {
2205 spin_unlock(&vptr->lock);
2209 if (likely(napi_schedule_prep(&vptr->napi))) {
2210 mac_disable_int(vptr->mac_regs);
2211 __napi_schedule(&vptr->napi);
2213 spin_unlock(&vptr->lock);
2219 * velocity_open - interface activation callback
2220 * @dev: network layer device to open
2222 * Called when the network layer brings the interface up. Returns
2223 * a negative posix error code on failure, or zero on success.
2225 * All the ring allocation and set up is done on open for this
2226 * adapter to minimise memory usage when inactive
2228 static int velocity_open(struct net_device *dev)
2230 struct velocity_info *vptr = netdev_priv(dev);
2233 ret = velocity_init_rings(vptr, dev->mtu);
2237 /* Ensure chip is running */
2238 pci_set_power_state(vptr->pdev, PCI_D0);
2240 velocity_give_many_rx_descs(vptr);
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 mac_enable_int(vptr->mac_regs);
2254 netif_start_queue(dev);
2255 napi_enable(&vptr->napi);
2256 vptr->flags |= VELOCITY_FLAGS_OPENED;
2262 * velocity_shutdown - shut down the chip
2263 * @vptr: velocity to deactivate
2265 * Shuts down the internal operations of the velocity and
2266 * disables interrupts, autopolling, transmit and receive
2268 static void velocity_shutdown(struct velocity_info *vptr)
2270 struct mac_regs __iomem *regs = vptr->mac_regs;
2271 mac_disable_int(regs);
2272 writel(CR0_STOP, ®s->CR0Set);
2273 writew(0xFFFF, ®s->TDCSRClr);
2274 writeb(0xFF, ®s->RDCSRClr);
2275 safe_disable_mii_autopoll(regs);
2276 mac_clear_isr(regs);
2280 * velocity_change_mtu - MTU change callback
2281 * @dev: network device
2282 * @new_mtu: desired MTU
2284 * Handle requests from the networking layer for MTU change on
2285 * this interface. It gets called on a change by the network layer.
2286 * Return zero for success or negative posix error code.
2288 static int velocity_change_mtu(struct net_device *dev, int new_mtu)
2290 struct velocity_info *vptr = netdev_priv(dev);
2293 if ((new_mtu < VELOCITY_MIN_MTU) || new_mtu > (VELOCITY_MAX_MTU)) {
2294 VELOCITY_PRT(MSG_LEVEL_ERR, KERN_NOTICE "%s: Invalid MTU.\n",
2300 if (!netif_running(dev)) {
2305 if (dev->mtu != new_mtu) {
2306 struct velocity_info *tmp_vptr;
2307 unsigned long flags;
2311 tmp_vptr = kzalloc(sizeof(*tmp_vptr), GFP_KERNEL);
2317 tmp_vptr->dev = dev;
2318 tmp_vptr->pdev = vptr->pdev;
2319 tmp_vptr->options = vptr->options;
2320 tmp_vptr->tx.numq = vptr->tx.numq;
2322 ret = velocity_init_rings(tmp_vptr, new_mtu);
2324 goto out_free_tmp_vptr_1;
2326 spin_lock_irqsave(&vptr->lock, flags);
2328 netif_stop_queue(dev);
2329 velocity_shutdown(vptr);
2334 vptr->rx = tmp_vptr->rx;
2335 vptr->tx = tmp_vptr->tx;
2342 velocity_give_many_rx_descs(vptr);
2344 velocity_init_registers(vptr, VELOCITY_INIT_COLD);
2346 mac_enable_int(vptr->mac_regs);
2347 netif_start_queue(dev);
2349 spin_unlock_irqrestore(&vptr->lock, flags);
2351 velocity_free_rings(tmp_vptr);
2353 out_free_tmp_vptr_1:
2361 * velocity_mii_ioctl - MII ioctl handler
2362 * @dev: network device
2363 * @ifr: the ifreq block for the ioctl
2366 * Process MII requests made via ioctl from the network layer. These
2367 * are used by tools like kudzu to interrogate the link state of the
2370 static int velocity_mii_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
2372 struct velocity_info *vptr = netdev_priv(dev);
2373 struct mac_regs __iomem *regs = vptr->mac_regs;
2374 unsigned long flags;
2375 struct mii_ioctl_data *miidata = if_mii(ifr);
2380 miidata->phy_id = readb(®s->MIIADR) & 0x1f;
2383 if (velocity_mii_read(vptr->mac_regs, miidata->reg_num & 0x1f, &(miidata->val_out)) < 0)
2387 spin_lock_irqsave(&vptr->lock, flags);
2388 err = velocity_mii_write(vptr->mac_regs, miidata->reg_num & 0x1f, miidata->val_in);
2389 spin_unlock_irqrestore(&vptr->lock, flags);
2390 check_connection_type(vptr->mac_regs);
2402 * velocity_ioctl - ioctl entry point
2403 * @dev: network device
2404 * @rq: interface request ioctl
2405 * @cmd: command code
2407 * Called when the user issues an ioctl request to the network
2408 * device in question. The velocity interface supports MII.
2410 static int velocity_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2412 struct velocity_info *vptr = netdev_priv(dev);
2415 /* If we are asked for information and the device is power
2416 saving then we need to bring the device back up to talk to it */
2418 if (!netif_running(dev))
2419 pci_set_power_state(vptr->pdev, PCI_D0);
2422 case SIOCGMIIPHY: /* Get address of MII PHY in use. */
2423 case SIOCGMIIREG: /* Read MII PHY register. */
2424 case SIOCSMIIREG: /* Write to MII PHY register. */
2425 ret = velocity_mii_ioctl(dev, rq, cmd);
2431 if (!netif_running(dev))
2432 pci_set_power_state(vptr->pdev, PCI_D3hot);
2439 * velocity_get_status - statistics callback
2440 * @dev: network device
2442 * Callback from the network layer to allow driver statistics
2443 * to be resynchronized with hardware collected state. In the
2444 * case of the velocity we need to pull the MIB counters from
2445 * the hardware into the counters before letting the network
2446 * layer display them.
2448 static struct net_device_stats *velocity_get_stats(struct net_device *dev)
2450 struct velocity_info *vptr = netdev_priv(dev);
2452 /* If the hardware is down, don't touch MII */
2453 if (!netif_running(dev))
2456 spin_lock_irq(&vptr->lock);
2457 velocity_update_hw_mibs(vptr);
2458 spin_unlock_irq(&vptr->lock);
2460 dev->stats.rx_packets = vptr->mib_counter[HW_MIB_ifRxAllPkts];
2461 dev->stats.rx_errors = vptr->mib_counter[HW_MIB_ifRxErrorPkts];
2462 dev->stats.rx_length_errors = vptr->mib_counter[HW_MIB_ifInRangeLengthErrors];
2464 // unsigned long rx_dropped; /* no space in linux buffers */
2465 dev->stats.collisions = vptr->mib_counter[HW_MIB_ifTxEtherCollisions];
2466 /* detailed rx_errors: */
2467 // unsigned long rx_length_errors;
2468 // unsigned long rx_over_errors; /* receiver ring buff overflow */
2469 dev->stats.rx_crc_errors = vptr->mib_counter[HW_MIB_ifRxPktCRCE];
2470 // unsigned long rx_frame_errors; /* recv'd frame alignment error */
2471 // unsigned long rx_fifo_errors; /* recv'r fifo overrun */
2472 // unsigned long rx_missed_errors; /* receiver missed packet */
2474 /* detailed tx_errors */
2475 // unsigned long tx_fifo_errors;
2481 * velocity_close - close adapter callback
2482 * @dev: network device
2484 * Callback from the network layer when the velocity is being
2485 * deactivated by the network layer
2487 static int velocity_close(struct net_device *dev)
2489 struct velocity_info *vptr = netdev_priv(dev);
2491 napi_disable(&vptr->napi);
2492 netif_stop_queue(dev);
2493 velocity_shutdown(vptr);
2495 if (vptr->flags & VELOCITY_FLAGS_WOL_ENABLED)
2496 velocity_get_ip(vptr);
2498 free_irq(dev->irq, dev);
2500 /* Power down the chip */
2501 pci_set_power_state(vptr->pdev, PCI_D3hot);
2503 velocity_free_rings(vptr);
2505 vptr->flags &= (~VELOCITY_FLAGS_OPENED);
2510 * velocity_xmit - transmit packet callback
2511 * @skb: buffer to transmit
2512 * @dev: network device
2514 * Called by the networ layer to request a packet is queued to
2515 * the velocity. Returns zero on success.
2517 static netdev_tx_t velocity_xmit(struct sk_buff *skb,
2518 struct net_device *dev)
2520 struct velocity_info *vptr = netdev_priv(dev);
2522 struct tx_desc *td_ptr;
2523 struct velocity_td_info *tdinfo;
2524 unsigned long flags;
2529 if (skb_padto(skb, ETH_ZLEN))
2532 /* The hardware can handle at most 7 memory segments, so merge
2533 * the skb if there are more */
2534 if (skb_shinfo(skb)->nr_frags > 6 && __skb_linearize(skb)) {
2536 return NETDEV_TX_OK;
2539 pktlen = skb_shinfo(skb)->nr_frags == 0 ?
2540 max_t(unsigned int, skb->len, ETH_ZLEN) :
2543 spin_lock_irqsave(&vptr->lock, flags);
2545 index = vptr->tx.curr[qnum];
2546 td_ptr = &(vptr->tx.rings[qnum][index]);
2547 tdinfo = &(vptr->tx.infos[qnum][index]);
2549 td_ptr->tdesc1.TCR = TCR0_TIC;
2550 td_ptr->td_buf[0].size &= ~TD_QUEUE;
2553 * Map the linear network buffer into PCI space and
2554 * add it to the transmit ring.
2557 tdinfo->skb_dma[0] = pci_map_single(vptr->pdev, skb->data, pktlen, PCI_DMA_TODEVICE);
2558 td_ptr->tdesc0.len = cpu_to_le16(pktlen);
2559 td_ptr->td_buf[0].pa_low = cpu_to_le32(tdinfo->skb_dma[0]);
2560 td_ptr->td_buf[0].pa_high = 0;
2561 td_ptr->td_buf[0].size = cpu_to_le16(pktlen);
2563 /* Handle fragments */
2564 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
2565 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
2567 tdinfo->skb_dma[i + 1] = pci_map_page(vptr->pdev, frag->page,
2568 frag->page_offset, frag->size,
2571 td_ptr->td_buf[i + 1].pa_low = cpu_to_le32(tdinfo->skb_dma[i + 1]);
2572 td_ptr->td_buf[i + 1].pa_high = 0;
2573 td_ptr->td_buf[i + 1].size = cpu_to_le16(frag->size);
2575 tdinfo->nskb_dma = i + 1;
2577 td_ptr->tdesc1.cmd = TCPLS_NORMAL + (tdinfo->nskb_dma + 1) * 16;
2579 if (vptr->vlgrp && vlan_tx_tag_present(skb)) {
2580 td_ptr->tdesc1.vlan = cpu_to_le16(vlan_tx_tag_get(skb));
2581 td_ptr->tdesc1.TCR |= TCR0_VETAG;
2585 * Handle hardware checksum
2587 if ((dev->features & NETIF_F_IP_CSUM) &&
2588 (skb->ip_summed == CHECKSUM_PARTIAL)) {
2589 const struct iphdr *ip = ip_hdr(skb);
2590 if (ip->protocol == IPPROTO_TCP)
2591 td_ptr->tdesc1.TCR |= TCR0_TCPCK;
2592 else if (ip->protocol == IPPROTO_UDP)
2593 td_ptr->tdesc1.TCR |= (TCR0_UDPCK);
2594 td_ptr->tdesc1.TCR |= TCR0_IPCK;
2599 prev = vptr->options.numtx - 1;
2600 td_ptr->tdesc0.len |= OWNED_BY_NIC;
2601 vptr->tx.used[qnum]++;
2602 vptr->tx.curr[qnum] = (index + 1) % vptr->options.numtx;
2604 if (AVAIL_TD(vptr, qnum) < 1)
2605 netif_stop_queue(dev);
2607 td_ptr = &(vptr->tx.rings[qnum][prev]);
2608 td_ptr->td_buf[0].size |= TD_QUEUE;
2609 mac_tx_queue_wake(vptr->mac_regs, qnum);
2611 dev->trans_start = jiffies;
2612 spin_unlock_irqrestore(&vptr->lock, flags);
2614 return NETDEV_TX_OK;
2618 static const struct net_device_ops velocity_netdev_ops = {
2619 .ndo_open = velocity_open,
2620 .ndo_stop = velocity_close,
2621 .ndo_start_xmit = velocity_xmit,
2622 .ndo_get_stats = velocity_get_stats,
2623 .ndo_validate_addr = eth_validate_addr,
2624 .ndo_set_mac_address = eth_mac_addr,
2625 .ndo_set_multicast_list = velocity_set_multi,
2626 .ndo_change_mtu = velocity_change_mtu,
2627 .ndo_do_ioctl = velocity_ioctl,
2628 .ndo_vlan_rx_add_vid = velocity_vlan_rx_add_vid,
2629 .ndo_vlan_rx_kill_vid = velocity_vlan_rx_kill_vid,
2630 .ndo_vlan_rx_register = velocity_vlan_rx_register,
2634 * velocity_init_info - init private data
2636 * @vptr: Velocity info
2639 * Set up the initial velocity_info struct for the device that has been
2642 static void __devinit velocity_init_info(struct pci_dev *pdev,
2643 struct velocity_info *vptr,
2644 const struct velocity_info_tbl *info)
2646 memset(vptr, 0, sizeof(struct velocity_info));
2649 vptr->chip_id = info->chip_id;
2650 vptr->tx.numq = info->txqueue;
2651 vptr->multicast_limit = MCAM_SIZE;
2652 spin_lock_init(&vptr->lock);
2656 * velocity_get_pci_info - retrieve PCI info for device
2657 * @vptr: velocity device
2658 * @pdev: PCI device it matches
2660 * Retrieve the PCI configuration space data that interests us from
2661 * the kernel PCI layer
2663 static int __devinit velocity_get_pci_info(struct velocity_info *vptr, struct pci_dev *pdev)
2665 vptr->rev_id = pdev->revision;
2667 pci_set_master(pdev);
2669 vptr->ioaddr = pci_resource_start(pdev, 0);
2670 vptr->memaddr = pci_resource_start(pdev, 1);
2672 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_IO)) {
2674 "region #0 is not an I/O resource, aborting.\n");
2678 if ((pci_resource_flags(pdev, 1) & IORESOURCE_IO)) {
2680 "region #1 is an I/O resource, aborting.\n");
2684 if (pci_resource_len(pdev, 1) < VELOCITY_IO_SIZE) {
2685 dev_err(&pdev->dev, "region #1 is too small.\n");
2694 * velocity_print_info - per driver data
2697 * Print per driver data as the kernel driver finds Velocity
2700 static void __devinit velocity_print_info(struct velocity_info *vptr)
2702 struct net_device *dev = vptr->dev;
2704 printk(KERN_INFO "%s: %s\n", dev->name, get_chip_name(vptr->chip_id));
2705 printk(KERN_INFO "%s: Ethernet Address: %pM\n",
2706 dev->name, dev->dev_addr);
2709 static u32 velocity_get_link(struct net_device *dev)
2711 struct velocity_info *vptr = netdev_priv(dev);
2712 struct mac_regs __iomem *regs = vptr->mac_regs;
2713 return BYTE_REG_BITS_IS_ON(PHYSR0_LINKGD, ®s->PHYSR0) ? 1 : 0;
2718 * velocity_found1 - set up discovered velocity card
2720 * @ent: PCI device table entry that matched
2722 * Configure a discovered adapter from scratch. Return a negative
2723 * errno error code on failure paths.
2725 static int __devinit velocity_found1(struct pci_dev *pdev, const struct pci_device_id *ent)
2727 static int first = 1;
2728 struct net_device *dev;
2730 const char *drv_string;
2731 const struct velocity_info_tbl *info = &chip_info_table[ent->driver_data];
2732 struct velocity_info *vptr;
2733 struct mac_regs __iomem *regs;
2736 /* FIXME: this driver, like almost all other ethernet drivers,
2737 * can support more than MAX_UNITS.
2739 if (velocity_nics >= MAX_UNITS) {
2740 dev_notice(&pdev->dev, "already found %d NICs.\n",
2745 dev = alloc_etherdev(sizeof(struct velocity_info));
2747 dev_err(&pdev->dev, "allocate net device failed.\n");
2751 /* Chain it all together */
2753 SET_NETDEV_DEV(dev, &pdev->dev);
2754 vptr = netdev_priv(dev);
2758 printk(KERN_INFO "%s Ver. %s\n",
2759 VELOCITY_FULL_DRV_NAM, VELOCITY_VERSION);
2760 printk(KERN_INFO "Copyright (c) 2002, 2003 VIA Networking Technologies, Inc.\n");
2761 printk(KERN_INFO "Copyright (c) 2004 Red Hat Inc.\n");
2765 velocity_init_info(pdev, vptr, info);
2769 dev->irq = pdev->irq;
2771 ret = pci_enable_device(pdev);
2775 ret = velocity_get_pci_info(vptr, pdev);
2777 /* error message already printed */
2781 ret = pci_request_regions(pdev, VELOCITY_NAME);
2783 dev_err(&pdev->dev, "No PCI resources.\n");
2787 regs = ioremap(vptr->memaddr, VELOCITY_IO_SIZE);
2790 goto err_release_res;
2793 vptr->mac_regs = regs;
2795 mac_wol_reset(regs);
2797 dev->base_addr = vptr->ioaddr;
2799 for (i = 0; i < 6; i++)
2800 dev->dev_addr[i] = readb(®s->PAR[i]);
2803 drv_string = dev_driver_string(&pdev->dev);
2805 velocity_get_options(&vptr->options, velocity_nics, drv_string);
2808 * Mask out the options cannot be set to the chip
2811 vptr->options.flags &= info->flags;
2814 * Enable the chip specified capbilities
2817 vptr->flags = vptr->options.flags | (info->flags & 0xFF000000UL);
2819 vptr->wol_opts = vptr->options.wol_opts;
2820 vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
2822 vptr->phy_id = MII_GET_PHY_ID(vptr->mac_regs);
2824 dev->irq = pdev->irq;
2825 dev->netdev_ops = &velocity_netdev_ops;
2826 dev->ethtool_ops = &velocity_ethtool_ops;
2827 netif_napi_add(dev, &vptr->napi, velocity_poll, VELOCITY_NAPI_WEIGHT);
2829 dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER |
2830 NETIF_F_HW_VLAN_RX | NETIF_F_IP_CSUM;
2832 ret = register_netdev(dev);
2836 if (!velocity_get_link(dev)) {
2837 netif_carrier_off(dev);
2838 vptr->mii_status |= VELOCITY_LINK_FAIL;
2841 velocity_print_info(vptr);
2842 pci_set_drvdata(pdev, dev);
2844 /* and leave the chip powered down */
2846 pci_set_power_state(pdev, PCI_D3hot);
2854 pci_release_regions(pdev);
2856 pci_disable_device(pdev);
2865 * wol_calc_crc - WOL CRC
2866 * @pattern: data pattern
2867 * @mask_pattern: mask
2869 * Compute the wake on lan crc hashes for the packet header
2870 * we are interested in.
2872 static u16 wol_calc_crc(int size, u8 *pattern, u8 *mask_pattern)
2878 for (i = 0; i < size; i++) {
2879 mask = mask_pattern[i];
2881 /* Skip this loop if the mask equals to zero */
2885 for (j = 0; j < 8; j++) {
2886 if ((mask & 0x01) == 0) {
2891 crc = crc_ccitt(crc, &(pattern[i * 8 + j]), 1);
2894 /* Finally, invert the result once to get the correct data */
2896 return bitrev32(crc) >> 16;
2900 * velocity_set_wol - set up for wake on lan
2901 * @vptr: velocity to set WOL status on
2903 * Set a card up for wake on lan either by unicast or by
2906 * FIXME: check static buffer is safe here
2908 static int velocity_set_wol(struct velocity_info *vptr)
2910 struct mac_regs __iomem *regs = vptr->mac_regs;
2914 static u32 mask_pattern[2][4] = {
2915 {0x00203000, 0x000003C0, 0x00000000, 0x0000000}, /* ARP */
2916 {0xfffff000, 0xffffffff, 0xffffffff, 0x000ffff} /* Magic Packet */
2919 writew(0xFFFF, ®s->WOLCRClr);
2920 writeb(WOLCFG_SAB | WOLCFG_SAM, ®s->WOLCFGSet);
2921 writew(WOLCR_MAGIC_EN, ®s->WOLCRSet);
2924 if (vptr->wol_opts & VELOCITY_WOL_PHY)
2925 writew((WOLCR_LINKON_EN|WOLCR_LINKOFF_EN), ®s->WOLCRSet);
2928 if (vptr->wol_opts & VELOCITY_WOL_UCAST)
2929 writew(WOLCR_UNICAST_EN, ®s->WOLCRSet);
2931 if (vptr->wol_opts & VELOCITY_WOL_ARP) {
2932 struct arp_packet *arp = (struct arp_packet *) buf;
2934 memset(buf, 0, sizeof(struct arp_packet) + 7);
2936 for (i = 0; i < 4; i++)
2937 writel(mask_pattern[0][i], ®s->ByteMask[0][i]);
2939 arp->type = htons(ETH_P_ARP);
2940 arp->ar_op = htons(1);
2942 memcpy(arp->ar_tip, vptr->ip_addr, 4);
2944 crc = wol_calc_crc((sizeof(struct arp_packet) + 7) / 8, buf,
2945 (u8 *) & mask_pattern[0][0]);
2947 writew(crc, ®s->PatternCRC[0]);
2948 writew(WOLCR_ARP_EN, ®s->WOLCRSet);
2951 BYTE_REG_BITS_ON(PWCFG_WOLTYPE, ®s->PWCFGSet);
2952 BYTE_REG_BITS_ON(PWCFG_LEGACY_WOLEN, ®s->PWCFGSet);
2954 writew(0x0FFF, ®s->WOLSRClr);
2956 if (vptr->mii_status & VELOCITY_AUTONEG_ENABLE) {
2957 if (PHYID_GET_PHY_ID(vptr->phy_id) == PHYID_CICADA_CS8201)
2958 MII_REG_BITS_ON(AUXCR_MDPPS, MII_REG_AUXCR, vptr->mac_regs);
2960 MII_REG_BITS_OFF(G1000CR_1000FD | G1000CR_1000, MII_REG_G1000CR, vptr->mac_regs);
2963 if (vptr->mii_status & VELOCITY_SPEED_1000)
2964 MII_REG_BITS_ON(BMCR_REAUTO, MII_REG_BMCR, vptr->mac_regs);
2966 BYTE_REG_BITS_ON(CHIPGCR_FCMODE, ®s->CHIPGCR);
2970 GCR = readb(®s->CHIPGCR);
2971 GCR = (GCR & ~CHIPGCR_FCGMII) | CHIPGCR_FCFDX;
2972 writeb(GCR, ®s->CHIPGCR);
2975 BYTE_REG_BITS_OFF(ISR_PWEI, ®s->ISR);
2976 /* Turn on SWPTAG just before entering power mode */
2977 BYTE_REG_BITS_ON(STICKHW_SWPTAG, ®s->STICKHW);
2978 /* Go to bed ..... */
2979 BYTE_REG_BITS_ON((STICKHW_DS1 | STICKHW_DS0), ®s->STICKHW);
2985 * velocity_save_context - save registers
2987 * @context: buffer for stored context
2989 * Retrieve the current configuration from the velocity hardware
2990 * and stash it in the context structure, for use by the context
2991 * restore functions. This allows us to save things we need across
2994 static void velocity_save_context(struct velocity_info *vptr, struct velocity_context *context)
2996 struct mac_regs __iomem *regs = vptr->mac_regs;
2998 u8 __iomem *ptr = (u8 __iomem *)regs;
3000 for (i = MAC_REG_PAR; i < MAC_REG_CR0_CLR; i += 4)
3001 *((u32 *) (context->mac_reg + i)) = readl(ptr + i);
3003 for (i = MAC_REG_MAR; i < MAC_REG_TDCSR_CLR; i += 4)
3004 *((u32 *) (context->mac_reg + i)) = readl(ptr + i);
3006 for (i = MAC_REG_RDBASE_LO; i < MAC_REG_FIFO_TEST0; i += 4)
3007 *((u32 *) (context->mac_reg + i)) = readl(ptr + i);
3011 static int velocity_suspend(struct pci_dev *pdev, pm_message_t state)
3013 struct net_device *dev = pci_get_drvdata(pdev);
3014 struct velocity_info *vptr = netdev_priv(dev);
3015 unsigned long flags;
3017 if (!netif_running(vptr->dev))
3020 netif_device_detach(vptr->dev);
3022 spin_lock_irqsave(&vptr->lock, flags);
3023 pci_save_state(pdev);
3025 if (vptr->flags & VELOCITY_FLAGS_WOL_ENABLED) {
3026 velocity_get_ip(vptr);
3027 velocity_save_context(vptr, &vptr->context);
3028 velocity_shutdown(vptr);
3029 velocity_set_wol(vptr);
3030 pci_enable_wake(pdev, PCI_D3hot, 1);
3031 pci_set_power_state(pdev, PCI_D3hot);
3033 velocity_save_context(vptr, &vptr->context);
3034 velocity_shutdown(vptr);
3035 pci_disable_device(pdev);
3036 pci_set_power_state(pdev, pci_choose_state(pdev, state));
3039 pci_set_power_state(pdev, pci_choose_state(pdev, state));
3041 spin_unlock_irqrestore(&vptr->lock, flags);
3046 * velocity_restore_context - restore registers
3048 * @context: buffer for stored context
3050 * Reload the register configuration from the velocity context
3051 * created by velocity_save_context.
3053 static void velocity_restore_context(struct velocity_info *vptr, struct velocity_context *context)
3055 struct mac_regs __iomem *regs = vptr->mac_regs;
3057 u8 __iomem *ptr = (u8 __iomem *)regs;
3059 for (i = MAC_REG_PAR; i < MAC_REG_CR0_SET; i += 4)
3060 writel(*((u32 *) (context->mac_reg + i)), ptr + i);
3063 for (i = MAC_REG_CR1_SET; i < MAC_REG_CR0_CLR; i++) {
3065 writeb(~(*((u8 *) (context->mac_reg + i))), ptr + i + 4);
3067 writeb(*((u8 *) (context->mac_reg + i)), ptr + i);
3070 for (i = MAC_REG_MAR; i < MAC_REG_IMR; i += 4)
3071 writel(*((u32 *) (context->mac_reg + i)), ptr + i);
3073 for (i = MAC_REG_RDBASE_LO; i < MAC_REG_FIFO_TEST0; i += 4)
3074 writel(*((u32 *) (context->mac_reg + i)), ptr + i);
3076 for (i = MAC_REG_TDCSR_SET; i <= MAC_REG_RDCSR_SET; i++)
3077 writeb(*((u8 *) (context->mac_reg + i)), ptr + i);
3080 static int velocity_resume(struct pci_dev *pdev)
3082 struct net_device *dev = pci_get_drvdata(pdev);
3083 struct velocity_info *vptr = netdev_priv(dev);
3084 unsigned long flags;
3087 if (!netif_running(vptr->dev))
3090 pci_set_power_state(pdev, PCI_D0);
3091 pci_enable_wake(pdev, 0, 0);
3092 pci_restore_state(pdev);
3094 mac_wol_reset(vptr->mac_regs);
3096 spin_lock_irqsave(&vptr->lock, flags);
3097 velocity_restore_context(vptr, &vptr->context);
3098 velocity_init_registers(vptr, VELOCITY_INIT_WOL);
3099 mac_disable_int(vptr->mac_regs);
3101 velocity_tx_srv(vptr, 0);
3103 for (i = 0; i < vptr->tx.numq; i++) {
3104 if (vptr->tx.used[i])
3105 mac_tx_queue_wake(vptr->mac_regs, i);
3108 mac_enable_int(vptr->mac_regs);
3109 spin_unlock_irqrestore(&vptr->lock, flags);
3110 netif_device_attach(vptr->dev);
3117 * Definition for our device driver. The PCI layer interface
3118 * uses this to handle all our card discover and plugging
3120 static struct pci_driver velocity_driver = {
3121 .name = VELOCITY_NAME,
3122 .id_table = velocity_id_table,
3123 .probe = velocity_found1,
3124 .remove = __devexit_p(velocity_remove1),
3126 .suspend = velocity_suspend,
3127 .resume = velocity_resume,
3133 * velocity_ethtool_up - pre hook for ethtool
3134 * @dev: network device
3136 * Called before an ethtool operation. We need to make sure the
3137 * chip is out of D3 state before we poke at it.
3139 static int velocity_ethtool_up(struct net_device *dev)
3141 struct velocity_info *vptr = netdev_priv(dev);
3142 if (!netif_running(dev))
3143 pci_set_power_state(vptr->pdev, PCI_D0);
3148 * velocity_ethtool_down - post hook for ethtool
3149 * @dev: network device
3151 * Called after an ethtool operation. Restore the chip back to D3
3152 * state if it isn't running.
3154 static void velocity_ethtool_down(struct net_device *dev)
3156 struct velocity_info *vptr = netdev_priv(dev);
3157 if (!netif_running(dev))
3158 pci_set_power_state(vptr->pdev, PCI_D3hot);
3161 static int velocity_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
3163 struct velocity_info *vptr = netdev_priv(dev);
3164 struct mac_regs __iomem *regs = vptr->mac_regs;
3166 status = check_connection_type(vptr->mac_regs);
3168 cmd->supported = SUPPORTED_TP |
3170 SUPPORTED_10baseT_Half |
3171 SUPPORTED_10baseT_Full |
3172 SUPPORTED_100baseT_Half |
3173 SUPPORTED_100baseT_Full |
3174 SUPPORTED_1000baseT_Half |
3175 SUPPORTED_1000baseT_Full;
3176 if (status & VELOCITY_SPEED_1000)
3177 cmd->speed = SPEED_1000;
3178 else if (status & VELOCITY_SPEED_100)
3179 cmd->speed = SPEED_100;
3181 cmd->speed = SPEED_10;
3182 cmd->autoneg = (status & VELOCITY_AUTONEG_ENABLE) ? AUTONEG_ENABLE : AUTONEG_DISABLE;
3183 cmd->port = PORT_TP;
3184 cmd->transceiver = XCVR_INTERNAL;
3185 cmd->phy_address = readb(®s->MIIADR) & 0x1F;
3187 if (status & VELOCITY_DUPLEX_FULL)
3188 cmd->duplex = DUPLEX_FULL;
3190 cmd->duplex = DUPLEX_HALF;
3195 static int velocity_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
3197 struct velocity_info *vptr = netdev_priv(dev);
3202 curr_status = check_connection_type(vptr->mac_regs);
3203 curr_status &= (~VELOCITY_LINK_FAIL);
3205 new_status |= ((cmd->autoneg) ? VELOCITY_AUTONEG_ENABLE : 0);
3206 new_status |= ((cmd->speed == SPEED_100) ? VELOCITY_SPEED_100 : 0);
3207 new_status |= ((cmd->speed == SPEED_10) ? VELOCITY_SPEED_10 : 0);
3208 new_status |= ((cmd->duplex == DUPLEX_FULL) ? VELOCITY_DUPLEX_FULL : 0);
3210 if ((new_status & VELOCITY_AUTONEG_ENABLE) && (new_status != (curr_status | VELOCITY_AUTONEG_ENABLE)))
3213 velocity_set_media_mode(vptr, new_status);
3218 static void velocity_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
3220 struct velocity_info *vptr = netdev_priv(dev);
3221 strcpy(info->driver, VELOCITY_NAME);
3222 strcpy(info->version, VELOCITY_VERSION);
3223 strcpy(info->bus_info, pci_name(vptr->pdev));
3226 static void velocity_ethtool_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
3228 struct velocity_info *vptr = netdev_priv(dev);
3229 wol->supported = WAKE_PHY | WAKE_MAGIC | WAKE_UCAST | WAKE_ARP;
3230 wol->wolopts |= WAKE_MAGIC;
3232 if (vptr->wol_opts & VELOCITY_WOL_PHY)
3233 wol.wolopts|=WAKE_PHY;
3235 if (vptr->wol_opts & VELOCITY_WOL_UCAST)
3236 wol->wolopts |= WAKE_UCAST;
3237 if (vptr->wol_opts & VELOCITY_WOL_ARP)
3238 wol->wolopts |= WAKE_ARP;
3239 memcpy(&wol->sopass, vptr->wol_passwd, 6);
3242 static int velocity_ethtool_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
3244 struct velocity_info *vptr = netdev_priv(dev);
3246 if (!(wol->wolopts & (WAKE_PHY | WAKE_MAGIC | WAKE_UCAST | WAKE_ARP)))
3248 vptr->wol_opts = VELOCITY_WOL_MAGIC;
3251 if (wol.wolopts & WAKE_PHY) {
3252 vptr->wol_opts|=VELOCITY_WOL_PHY;
3253 vptr->flags |=VELOCITY_FLAGS_WOL_ENABLED;
3257 if (wol->wolopts & WAKE_MAGIC) {
3258 vptr->wol_opts |= VELOCITY_WOL_MAGIC;
3259 vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
3261 if (wol->wolopts & WAKE_UCAST) {
3262 vptr->wol_opts |= VELOCITY_WOL_UCAST;
3263 vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
3265 if (wol->wolopts & WAKE_ARP) {
3266 vptr->wol_opts |= VELOCITY_WOL_ARP;
3267 vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
3269 memcpy(vptr->wol_passwd, wol->sopass, 6);
3273 static u32 velocity_get_msglevel(struct net_device *dev)
3278 static void velocity_set_msglevel(struct net_device *dev, u32 value)
3283 static int get_pending_timer_val(int val)
3285 int mult_bits = val >> 6;
3301 return (val & 0x3f) * mult;
3304 static void set_pending_timer_val(int *val, u32 us)
3310 mult = 1; /* mult with 4 */
3313 if (us >= 0x3f * 4) {
3314 mult = 2; /* mult with 16 */
3317 if (us >= 0x3f * 16) {
3318 mult = 3; /* mult with 64 */
3322 *val = (mult << 6) | ((us >> shift) & 0x3f);
3326 static int velocity_get_coalesce(struct net_device *dev,
3327 struct ethtool_coalesce *ecmd)
3329 struct velocity_info *vptr = netdev_priv(dev);
3331 ecmd->tx_max_coalesced_frames = vptr->options.tx_intsup;
3332 ecmd->rx_max_coalesced_frames = vptr->options.rx_intsup;
3334 ecmd->rx_coalesce_usecs = get_pending_timer_val(vptr->options.rxqueue_timer);
3335 ecmd->tx_coalesce_usecs = get_pending_timer_val(vptr->options.txqueue_timer);
3340 static int velocity_set_coalesce(struct net_device *dev,
3341 struct ethtool_coalesce *ecmd)
3343 struct velocity_info *vptr = netdev_priv(dev);
3344 int max_us = 0x3f * 64;
3347 if (ecmd->tx_coalesce_usecs > max_us)
3349 if (ecmd->rx_coalesce_usecs > max_us)
3352 if (ecmd->tx_max_coalesced_frames > 0xff)
3354 if (ecmd->rx_max_coalesced_frames > 0xff)
3357 vptr->options.rx_intsup = ecmd->rx_max_coalesced_frames;
3358 vptr->options.tx_intsup = ecmd->tx_max_coalesced_frames;
3360 set_pending_timer_val(&vptr->options.rxqueue_timer,
3361 ecmd->rx_coalesce_usecs);
3362 set_pending_timer_val(&vptr->options.txqueue_timer,
3363 ecmd->tx_coalesce_usecs);
3365 /* Setup the interrupt suppression and queue timers */
3366 mac_disable_int(vptr->mac_regs);
3367 setup_adaptive_interrupts(vptr);
3368 setup_queue_timers(vptr);
3370 mac_write_int_mask(vptr->int_mask, vptr->mac_regs);
3371 mac_clear_isr(vptr->mac_regs);
3372 mac_enable_int(vptr->mac_regs);
3377 static const struct ethtool_ops velocity_ethtool_ops = {
3378 .get_settings = velocity_get_settings,
3379 .set_settings = velocity_set_settings,
3380 .get_drvinfo = velocity_get_drvinfo,
3381 .set_tx_csum = ethtool_op_set_tx_csum,
3382 .get_tx_csum = ethtool_op_get_tx_csum,
3383 .get_wol = velocity_ethtool_get_wol,
3384 .set_wol = velocity_ethtool_set_wol,
3385 .get_msglevel = velocity_get_msglevel,
3386 .set_msglevel = velocity_set_msglevel,
3387 .set_sg = ethtool_op_set_sg,
3388 .get_link = velocity_get_link,
3389 .get_coalesce = velocity_get_coalesce,
3390 .set_coalesce = velocity_set_coalesce,
3391 .begin = velocity_ethtool_up,
3392 .complete = velocity_ethtool_down
3397 static int velocity_netdev_event(struct notifier_block *nb, unsigned long notification, void *ptr)
3399 struct in_ifaddr *ifa = (struct in_ifaddr *) ptr;
3400 struct net_device *dev = ifa->ifa_dev->dev;
3402 if (dev_net(dev) == &init_net &&
3403 dev->netdev_ops == &velocity_netdev_ops)
3404 velocity_get_ip(netdev_priv(dev));
3408 #endif /* CONFIG_INET */
3409 #endif /* CONFIG_PM */
3411 #if defined(CONFIG_PM) && defined(CONFIG_INET)
3412 static struct notifier_block velocity_inetaddr_notifier = {
3413 .notifier_call = velocity_netdev_event,
3416 static void velocity_register_notifier(void)
3418 register_inetaddr_notifier(&velocity_inetaddr_notifier);
3421 static void velocity_unregister_notifier(void)
3423 unregister_inetaddr_notifier(&velocity_inetaddr_notifier);
3428 #define velocity_register_notifier() do {} while (0)
3429 #define velocity_unregister_notifier() do {} while (0)
3431 #endif /* defined(CONFIG_PM) && defined(CONFIG_INET) */
3434 * velocity_init_module - load time function
3436 * Called when the velocity module is loaded. The PCI driver
3437 * is registered with the PCI layer, and in turn will call
3438 * the probe functions for each velocity adapter installed
3441 static int __init velocity_init_module(void)
3445 velocity_register_notifier();
3446 ret = pci_register_driver(&velocity_driver);
3448 velocity_unregister_notifier();
3453 * velocity_cleanup - module unload
3455 * When the velocity hardware is unloaded this function is called.
3456 * It will clean up the notifiers and the unregister the PCI
3457 * driver interface for this hardware. This in turn cleans up
3458 * all discovered interfaces before returning from the function
3460 static void __exit velocity_cleanup_module(void)
3462 velocity_unregister_notifier();
3463 pci_unregister_driver(&velocity_driver);
3466 module_init(velocity_init_module);
3467 module_exit(velocity_cleanup_module);