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.
12 * rx_copybreak/alignment
16 * The changes are (c) Copyright 2004, Red Hat Inc. <alan@redhat.com>
17 * Additional fixes and clean up: Francois Romieu
19 * This source has not been verified for use in safety critical systems.
21 * Please direct queries about the revamped driver to the linux-kernel
26 * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
27 * All rights reserved.
29 * This software may be redistributed and/or modified under
30 * the terms of the GNU General Public License as published by the Free
31 * Software Foundation; either version 2 of the License, or
34 * This program is distributed in the hope that it will be useful, but
35 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
36 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
39 * Author: Chuang Liang-Shing, AJ Jiang
43 * MODULE_LICENSE("GPL");
48 #include <linux/module.h>
49 #include <linux/types.h>
50 #include <linux/init.h>
52 #include <linux/errno.h>
53 #include <linux/ioport.h>
54 #include <linux/pci.h>
55 #include <linux/kernel.h>
56 #include <linux/netdevice.h>
57 #include <linux/etherdevice.h>
58 #include <linux/skbuff.h>
59 #include <linux/delay.h>
60 #include <linux/timer.h>
61 #include <linux/slab.h>
62 #include <linux/interrupt.h>
63 #include <linux/string.h>
64 #include <linux/wait.h>
67 #include <asm/uaccess.h>
68 #include <linux/proc_fs.h>
69 #include <linux/inetdevice.h>
70 #include <linux/reboot.h>
71 #include <linux/ethtool.h>
72 #include <linux/mii.h>
74 #include <linux/if_arp.h>
76 #include <linux/tcp.h>
77 #include <linux/udp.h>
78 #include <linux/crc-ccitt.h>
79 #include <linux/crc32.h>
81 #include "via-velocity.h"
84 static int velocity_nics = 0;
85 static int msglevel = MSG_LEVEL_INFO;
88 static int velocity_mii_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd);
89 static const struct ethtool_ops velocity_ethtool_ops;
95 MODULE_AUTHOR("VIA Networking Technologies, Inc.");
96 MODULE_LICENSE("GPL");
97 MODULE_DESCRIPTION("VIA Networking Velocity Family Gigabit Ethernet Adapter Driver");
99 #define VELOCITY_PARAM(N,D) \
100 static int N[MAX_UNITS]=OPTION_DEFAULT;\
101 module_param_array(N, int, NULL, 0); \
102 MODULE_PARM_DESC(N, D);
104 #define RX_DESC_MIN 64
105 #define RX_DESC_MAX 255
106 #define RX_DESC_DEF 64
107 VELOCITY_PARAM(RxDescriptors, "Number of receive descriptors");
109 #define TX_DESC_MIN 16
110 #define TX_DESC_MAX 256
111 #define TX_DESC_DEF 64
112 VELOCITY_PARAM(TxDescriptors, "Number of transmit descriptors");
114 #define VLAN_ID_MIN 0
115 #define VLAN_ID_MAX 4095
116 #define VLAN_ID_DEF 0
117 /* VID_setting[] is used for setting the VID of NIC.
121 VELOCITY_PARAM(VID_setting, "802.1Q VLAN ID");
123 #define RX_THRESH_MIN 0
124 #define RX_THRESH_MAX 3
125 #define RX_THRESH_DEF 0
126 /* rx_thresh[] is used for controlling the receive fifo threshold.
127 0: indicate the rxfifo threshold is 128 bytes.
128 1: indicate the rxfifo threshold is 512 bytes.
129 2: indicate the rxfifo threshold is 1024 bytes.
130 3: indicate the rxfifo threshold is store & forward.
132 VELOCITY_PARAM(rx_thresh, "Receive fifo threshold");
134 #define DMA_LENGTH_MIN 0
135 #define DMA_LENGTH_MAX 7
136 #define DMA_LENGTH_DEF 0
138 /* DMA_length[] is used for controlling the DMA length
145 6: SF(flush till emply)
146 7: SF(flush till emply)
148 VELOCITY_PARAM(DMA_length, "DMA length");
150 #define TAGGING_DEF 0
151 /* enable_tagging[] is used for enabling 802.1Q VID tagging.
152 0: disable VID seeting(default).
153 1: enable VID setting.
155 VELOCITY_PARAM(enable_tagging, "Enable 802.1Q tagging");
157 #define IP_ALIG_DEF 0
158 /* IP_byte_align[] is used for IP header DWORD byte aligned
159 0: indicate the IP header won't be DWORD byte aligned.(Default) .
160 1: indicate the IP header will be DWORD byte aligned.
161 In some enviroment, the IP header should be DWORD byte aligned,
162 or the packet will be droped when we receive it. (eg: IPVS)
164 VELOCITY_PARAM(IP_byte_align, "Enable IP header dword aligned");
166 #define TX_CSUM_DEF 1
167 /* txcsum_offload[] is used for setting the checksum offload ability of NIC.
168 (We only support RX checksum offload now)
169 0: disable csum_offload[checksum offload
170 1: enable checksum offload. (Default)
172 VELOCITY_PARAM(txcsum_offload, "Enable transmit packet checksum offload");
174 #define FLOW_CNTL_DEF 1
175 #define FLOW_CNTL_MIN 1
176 #define FLOW_CNTL_MAX 5
178 /* flow_control[] is used for setting the flow control ability of NIC.
179 1: hardware deafult - AUTO (default). Use Hardware default value in ANAR.
180 2: enable TX flow control.
181 3: enable RX flow control.
182 4: enable RX/TX flow control.
185 VELOCITY_PARAM(flow_control, "Enable flow control ability");
187 #define MED_LNK_DEF 0
188 #define MED_LNK_MIN 0
189 #define MED_LNK_MAX 4
190 /* speed_duplex[] is used for setting the speed and duplex mode of NIC.
191 0: indicate autonegotiation for both speed and duplex mode
192 1: indicate 100Mbps half duplex mode
193 2: indicate 100Mbps full duplex mode
194 3: indicate 10Mbps half duplex mode
195 4: indicate 10Mbps full duplex mode
198 if EEPROM have been set to the force mode, this option is ignored
201 VELOCITY_PARAM(speed_duplex, "Setting the speed and duplex mode");
203 #define VAL_PKT_LEN_DEF 0
204 /* ValPktLen[] is used for setting the checksum offload ability of NIC.
205 0: Receive frame with invalid layer 2 length (Default)
206 1: Drop frame with invalid layer 2 length
208 VELOCITY_PARAM(ValPktLen, "Receiving or Drop invalid 802.3 frame");
210 #define WOL_OPT_DEF 0
211 #define WOL_OPT_MIN 0
212 #define WOL_OPT_MAX 7
213 /* wol_opts[] is used for controlling wake on lan behavior.
214 0: Wake up if recevied a magic packet. (Default)
215 1: Wake up if link status is on/off.
216 2: Wake up if recevied an arp packet.
217 4: Wake up if recevied any unicast packet.
218 Those value can be sumed up to support more than one option.
220 VELOCITY_PARAM(wol_opts, "Wake On Lan options");
222 #define INT_WORKS_DEF 20
223 #define INT_WORKS_MIN 10
224 #define INT_WORKS_MAX 64
226 VELOCITY_PARAM(int_works, "Number of packets per interrupt services");
228 static int rx_copybreak = 200;
229 module_param(rx_copybreak, int, 0644);
230 MODULE_PARM_DESC(rx_copybreak, "Copy breakpoint for copy-only-tiny-frames");
232 static void velocity_init_info(struct pci_dev *pdev, struct velocity_info *vptr,
233 const struct velocity_info_tbl *info);
234 static int velocity_get_pci_info(struct velocity_info *, struct pci_dev *pdev);
235 static void velocity_print_info(struct velocity_info *vptr);
236 static int velocity_open(struct net_device *dev);
237 static int velocity_change_mtu(struct net_device *dev, int mtu);
238 static int velocity_xmit(struct sk_buff *skb, struct net_device *dev);
239 static int velocity_intr(int irq, void *dev_instance);
240 static void velocity_set_multi(struct net_device *dev);
241 static struct net_device_stats *velocity_get_stats(struct net_device *dev);
242 static int velocity_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
243 static int velocity_close(struct net_device *dev);
244 static int velocity_receive_frame(struct velocity_info *, int idx);
245 static int velocity_alloc_rx_buf(struct velocity_info *, int idx);
246 static void velocity_free_rd_ring(struct velocity_info *vptr);
247 static void velocity_free_tx_buf(struct velocity_info *vptr, struct velocity_td_info *);
248 static int velocity_soft_reset(struct velocity_info *vptr);
249 static void mii_init(struct velocity_info *vptr, u32 mii_status);
250 static u32 velocity_get_link(struct net_device *dev);
251 static u32 velocity_get_opt_media_mode(struct velocity_info *vptr);
252 static void velocity_print_link_status(struct velocity_info *vptr);
253 static void safe_disable_mii_autopoll(struct mac_regs __iomem * regs);
254 static void velocity_shutdown(struct velocity_info *vptr);
255 static void enable_flow_control_ability(struct velocity_info *vptr);
256 static void enable_mii_autopoll(struct mac_regs __iomem * regs);
257 static int velocity_mii_read(struct mac_regs __iomem *, u8 byIdx, u16 * pdata);
258 static int velocity_mii_write(struct mac_regs __iomem *, u8 byMiiAddr, u16 data);
259 static u32 mii_check_media_mode(struct mac_regs __iomem * regs);
260 static u32 check_connection_type(struct mac_regs __iomem * regs);
261 static int velocity_set_media_mode(struct velocity_info *vptr, u32 mii_status);
265 static int velocity_suspend(struct pci_dev *pdev, pm_message_t state);
266 static int velocity_resume(struct pci_dev *pdev);
268 static DEFINE_SPINLOCK(velocity_dev_list_lock);
269 static LIST_HEAD(velocity_dev_list);
273 #if defined(CONFIG_PM) && defined(CONFIG_INET)
275 static int velocity_netdev_event(struct notifier_block *nb, unsigned long notification, void *ptr);
277 static struct notifier_block velocity_inetaddr_notifier = {
278 .notifier_call = velocity_netdev_event,
281 static void velocity_register_notifier(void)
283 register_inetaddr_notifier(&velocity_inetaddr_notifier);
286 static void velocity_unregister_notifier(void)
288 unregister_inetaddr_notifier(&velocity_inetaddr_notifier);
293 #define velocity_register_notifier() do {} while (0)
294 #define velocity_unregister_notifier() do {} while (0)
299 * Internal board variants. At the moment we have only one
302 static const struct velocity_info_tbl chip_info_table[] __devinitdata = {
303 {CHIP_TYPE_VT6110, "VIA Networking Velocity Family Gigabit Ethernet Adapter", 1, 0x00FFFFFFUL},
308 * Describe the PCI device identifiers that we support in this
309 * device driver. Used for hotplug autoloading.
312 static const struct pci_device_id velocity_id_table[] __devinitdata = {
313 { PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_612X) },
317 MODULE_DEVICE_TABLE(pci, velocity_id_table);
320 * get_chip_name - identifier to name
321 * @id: chip identifier
323 * Given a chip identifier return a suitable description. Returns
324 * a pointer a static string valid while the driver is loaded.
327 static char __devinit *get_chip_name(enum chip_type chip_id)
330 for (i = 0; chip_info_table[i].name != NULL; i++)
331 if (chip_info_table[i].chip_id == chip_id)
333 return chip_info_table[i].name;
337 * velocity_remove1 - device unplug
338 * @pdev: PCI device being removed
340 * Device unload callback. Called on an unplug or on module
341 * unload for each active device that is present. Disconnects
342 * the device from the network layer and frees all the resources
345 static void __devexit velocity_remove1(struct pci_dev *pdev)
347 struct net_device *dev = pci_get_drvdata(pdev);
348 struct velocity_info *vptr = netdev_priv(dev);
353 spin_lock_irqsave(&velocity_dev_list_lock, flags);
354 if (!list_empty(&velocity_dev_list))
355 list_del(&vptr->list);
356 spin_unlock_irqrestore(&velocity_dev_list_lock, flags);
358 unregister_netdev(dev);
359 iounmap(vptr->mac_regs);
360 pci_release_regions(pdev);
361 pci_disable_device(pdev);
362 pci_set_drvdata(pdev, NULL);
369 * velocity_set_int_opt - parser for integer options
370 * @opt: pointer to option value
371 * @val: value the user requested (or -1 for default)
372 * @min: lowest value allowed
373 * @max: highest value allowed
374 * @def: default value
375 * @name: property name
378 * Set an integer property in the module options. This function does
379 * all the verification and checking as well as reporting so that
380 * we don't duplicate code for each option.
383 static void __devinit velocity_set_int_opt(int *opt, int val, int min, int max, int def, char *name, char *devname)
387 else if (val < min || val > max) {
388 VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: the value of parameter %s is invalid, the valid range is (%d-%d)\n",
389 devname, name, min, max);
392 VELOCITY_PRT(MSG_LEVEL_INFO, KERN_INFO "%s: set value of parameter %s to %d\n",
399 * velocity_set_bool_opt - parser for boolean options
400 * @opt: pointer to option value
401 * @val: value the user requested (or -1 for default)
402 * @def: default value (yes/no)
403 * @flag: numeric value to set for true.
404 * @name: property name
407 * Set a boolean property in the module options. This function does
408 * all the verification and checking as well as reporting so that
409 * we don't duplicate code for each option.
412 static void __devinit velocity_set_bool_opt(u32 * opt, int val, int def, u32 flag, char *name, char *devname)
416 *opt |= (def ? flag : 0);
417 else if (val < 0 || val > 1) {
418 printk(KERN_NOTICE "%s: the value of parameter %s is invalid, the valid range is (0-1)\n",
420 *opt |= (def ? flag : 0);
422 printk(KERN_INFO "%s: set parameter %s to %s\n",
423 devname, name, val ? "TRUE" : "FALSE");
424 *opt |= (val ? flag : 0);
429 * velocity_get_options - set options on device
430 * @opts: option structure for the device
431 * @index: index of option to use in module options array
432 * @devname: device name
434 * Turn the module and command options into a single structure
435 * for the current device
438 static void __devinit velocity_get_options(struct velocity_opt *opts, int index, char *devname)
441 velocity_set_int_opt(&opts->rx_thresh, rx_thresh[index], RX_THRESH_MIN, RX_THRESH_MAX, RX_THRESH_DEF, "rx_thresh", devname);
442 velocity_set_int_opt(&opts->DMA_length, DMA_length[index], DMA_LENGTH_MIN, DMA_LENGTH_MAX, DMA_LENGTH_DEF, "DMA_length", devname);
443 velocity_set_int_opt(&opts->numrx, RxDescriptors[index], RX_DESC_MIN, RX_DESC_MAX, RX_DESC_DEF, "RxDescriptors", devname);
444 velocity_set_int_opt(&opts->numtx, TxDescriptors[index], TX_DESC_MIN, TX_DESC_MAX, TX_DESC_DEF, "TxDescriptors", devname);
445 velocity_set_int_opt(&opts->vid, VID_setting[index], VLAN_ID_MIN, VLAN_ID_MAX, VLAN_ID_DEF, "VID_setting", devname);
446 velocity_set_bool_opt(&opts->flags, enable_tagging[index], TAGGING_DEF, VELOCITY_FLAGS_TAGGING, "enable_tagging", devname);
447 velocity_set_bool_opt(&opts->flags, txcsum_offload[index], TX_CSUM_DEF, VELOCITY_FLAGS_TX_CSUM, "txcsum_offload", devname);
448 velocity_set_int_opt(&opts->flow_cntl, flow_control[index], FLOW_CNTL_MIN, FLOW_CNTL_MAX, FLOW_CNTL_DEF, "flow_control", devname);
449 velocity_set_bool_opt(&opts->flags, IP_byte_align[index], IP_ALIG_DEF, VELOCITY_FLAGS_IP_ALIGN, "IP_byte_align", devname);
450 velocity_set_bool_opt(&opts->flags, ValPktLen[index], VAL_PKT_LEN_DEF, VELOCITY_FLAGS_VAL_PKT_LEN, "ValPktLen", devname);
451 velocity_set_int_opt((int *) &opts->spd_dpx, speed_duplex[index], MED_LNK_MIN, MED_LNK_MAX, MED_LNK_DEF, "Media link mode", devname);
452 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);
453 velocity_set_int_opt((int *) &opts->int_works, int_works[index], INT_WORKS_MIN, INT_WORKS_MAX, INT_WORKS_DEF, "Interrupt service works", devname);
454 opts->numrx = (opts->numrx & ~3);
458 * velocity_init_cam_filter - initialise CAM
459 * @vptr: velocity to program
461 * Initialize the content addressable memory used for filters. Load
462 * appropriately according to the presence of VLAN
465 static void velocity_init_cam_filter(struct velocity_info *vptr)
467 struct mac_regs __iomem * regs = vptr->mac_regs;
469 /* Turn on MCFG_PQEN, turn off MCFG_RTGOPT */
470 WORD_REG_BITS_SET(MCFG_PQEN, MCFG_RTGOPT, ®s->MCFG);
471 WORD_REG_BITS_ON(MCFG_VIDFR, ®s->MCFG);
473 /* Disable all CAMs */
474 memset(vptr->vCAMmask, 0, sizeof(u8) * 8);
475 memset(vptr->mCAMmask, 0, sizeof(u8) * 8);
476 mac_set_cam_mask(regs, vptr->vCAMmask, VELOCITY_VLAN_ID_CAM);
477 mac_set_cam_mask(regs, vptr->mCAMmask, VELOCITY_MULTICAST_CAM);
479 /* Enable first VCAM */
480 if (vptr->flags & VELOCITY_FLAGS_TAGGING) {
481 /* If Tagging option is enabled and VLAN ID is not zero, then
482 turn on MCFG_RTGOPT also */
483 if (vptr->options.vid != 0)
484 WORD_REG_BITS_ON(MCFG_RTGOPT, ®s->MCFG);
486 mac_set_cam(regs, 0, (u8 *) & (vptr->options.vid), VELOCITY_VLAN_ID_CAM);
487 vptr->vCAMmask[0] |= 1;
488 mac_set_cam_mask(regs, vptr->vCAMmask, VELOCITY_VLAN_ID_CAM);
491 mac_set_cam(regs, 0, (u8 *) &temp, VELOCITY_VLAN_ID_CAM);
493 mac_set_cam_mask(regs, (u8 *) &temp, VELOCITY_VLAN_ID_CAM);
498 * velocity_rx_reset - handle a receive reset
499 * @vptr: velocity we are resetting
501 * Reset the ownership and status for the receive ring side.
502 * Hand all the receive queue to the NIC.
505 static void velocity_rx_reset(struct velocity_info *vptr)
508 struct mac_regs __iomem * regs = vptr->mac_regs;
511 vptr->rd_dirty = vptr->rd_filled = vptr->rd_curr = 0;
514 * Init state, all RD entries belong to the NIC
516 for (i = 0; i < vptr->options.numrx; ++i)
517 vptr->rd_ring[i].rdesc0.owner = OWNED_BY_NIC;
519 writew(vptr->options.numrx, ®s->RBRDU);
520 writel(vptr->rd_pool_dma, ®s->RDBaseLo);
521 writew(0, ®s->RDIdx);
522 writew(vptr->options.numrx - 1, ®s->RDCSize);
526 * velocity_init_registers - initialise MAC registers
527 * @vptr: velocity to init
528 * @type: type of initialisation (hot or cold)
530 * Initialise the MAC on a reset or on first set up on the
534 static void velocity_init_registers(struct velocity_info *vptr,
535 enum velocity_init_type type)
537 struct mac_regs __iomem * regs = vptr->mac_regs;
543 case VELOCITY_INIT_RESET:
544 case VELOCITY_INIT_WOL:
546 netif_stop_queue(vptr->dev);
549 * Reset RX to prevent RX pointer not on the 4X location
551 velocity_rx_reset(vptr);
552 mac_rx_queue_run(regs);
553 mac_rx_queue_wake(regs);
555 mii_status = velocity_get_opt_media_mode(vptr);
556 if (velocity_set_media_mode(vptr, mii_status) != VELOCITY_LINK_CHANGE) {
557 velocity_print_link_status(vptr);
558 if (!(vptr->mii_status & VELOCITY_LINK_FAIL))
559 netif_wake_queue(vptr->dev);
562 enable_flow_control_ability(vptr);
565 writel(CR0_STOP, ®s->CR0Clr);
566 writel((CR0_DPOLL | CR0_TXON | CR0_RXON | CR0_STRT),
571 case VELOCITY_INIT_COLD:
576 velocity_soft_reset(vptr);
579 mac_eeprom_reload(regs);
580 for (i = 0; i < 6; i++) {
581 writeb(vptr->dev->dev_addr[i], &(regs->PAR[i]));
584 * clear Pre_ACPI bit.
586 BYTE_REG_BITS_OFF(CFGA_PACPI, &(regs->CFGA));
587 mac_set_rx_thresh(regs, vptr->options.rx_thresh);
588 mac_set_dma_length(regs, vptr->options.DMA_length);
590 writeb(WOLCFG_SAM | WOLCFG_SAB, ®s->WOLCFGSet);
592 * Back off algorithm use original IEEE standard
594 BYTE_REG_BITS_SET(CFGB_OFSET, (CFGB_CRANDOM | CFGB_CAP | CFGB_MBA | CFGB_BAKOPT), ®s->CFGB);
599 velocity_init_cam_filter(vptr);
602 * Set packet filter: Receive directed and broadcast address
604 velocity_set_multi(vptr->dev);
607 * Enable MII auto-polling
609 enable_mii_autopoll(regs);
611 vptr->int_mask = INT_MASK_DEF;
613 writel(cpu_to_le32(vptr->rd_pool_dma), ®s->RDBaseLo);
614 writew(vptr->options.numrx - 1, ®s->RDCSize);
615 mac_rx_queue_run(regs);
616 mac_rx_queue_wake(regs);
618 writew(vptr->options.numtx - 1, ®s->TDCSize);
620 for (i = 0; i < vptr->num_txq; i++) {
621 writel(cpu_to_le32(vptr->td_pool_dma[i]), &(regs->TDBaseLo[i]));
622 mac_tx_queue_run(regs, i);
625 init_flow_control_register(vptr);
627 writel(CR0_STOP, ®s->CR0Clr);
628 writel((CR0_DPOLL | CR0_TXON | CR0_RXON | CR0_STRT), ®s->CR0Set);
630 mii_status = velocity_get_opt_media_mode(vptr);
631 netif_stop_queue(vptr->dev);
633 mii_init(vptr, mii_status);
635 if (velocity_set_media_mode(vptr, mii_status) != VELOCITY_LINK_CHANGE) {
636 velocity_print_link_status(vptr);
637 if (!(vptr->mii_status & VELOCITY_LINK_FAIL))
638 netif_wake_queue(vptr->dev);
641 enable_flow_control_ability(vptr);
642 mac_hw_mibs_init(regs);
643 mac_write_int_mask(vptr->int_mask, regs);
650 * velocity_soft_reset - soft reset
651 * @vptr: velocity to reset
653 * Kick off a soft reset of the velocity adapter and then poll
654 * until the reset sequence has completed before returning.
657 static int velocity_soft_reset(struct velocity_info *vptr)
659 struct mac_regs __iomem * regs = vptr->mac_regs;
662 writel(CR0_SFRST, ®s->CR0Set);
664 for (i = 0; i < W_MAX_TIMEOUT; i++) {
666 if (!DWORD_REG_BITS_IS_ON(CR0_SFRST, ®s->CR0Set))
670 if (i == W_MAX_TIMEOUT) {
671 writel(CR0_FORSRST, ®s->CR0Set);
672 /* FIXME: PCI POSTING */
680 * velocity_found1 - set up discovered velocity card
682 * @ent: PCI device table entry that matched
684 * Configure a discovered adapter from scratch. Return a negative
685 * errno error code on failure paths.
688 static int __devinit velocity_found1(struct pci_dev *pdev, const struct pci_device_id *ent)
690 static int first = 1;
691 struct net_device *dev;
693 const struct velocity_info_tbl *info = &chip_info_table[ent->driver_data];
694 struct velocity_info *vptr;
695 struct mac_regs __iomem * regs;
698 /* FIXME: this driver, like almost all other ethernet drivers,
699 * can support more than MAX_UNITS.
701 if (velocity_nics >= MAX_UNITS) {
702 dev_notice(&pdev->dev, "already found %d NICs.\n",
707 dev = alloc_etherdev(sizeof(struct velocity_info));
709 dev_err(&pdev->dev, "allocate net device failed.\n");
713 /* Chain it all together */
715 SET_NETDEV_DEV(dev, &pdev->dev);
716 vptr = netdev_priv(dev);
720 printk(KERN_INFO "%s Ver. %s\n",
721 VELOCITY_FULL_DRV_NAM, VELOCITY_VERSION);
722 printk(KERN_INFO "Copyright (c) 2002, 2003 VIA Networking Technologies, Inc.\n");
723 printk(KERN_INFO "Copyright (c) 2004 Red Hat Inc.\n");
727 velocity_init_info(pdev, vptr, info);
731 dev->irq = pdev->irq;
733 ret = pci_enable_device(pdev);
737 ret = velocity_get_pci_info(vptr, pdev);
739 /* error message already printed */
743 ret = pci_request_regions(pdev, VELOCITY_NAME);
745 dev_err(&pdev->dev, "No PCI resources.\n");
749 regs = ioremap(vptr->memaddr, VELOCITY_IO_SIZE);
752 goto err_release_res;
755 vptr->mac_regs = regs;
759 dev->base_addr = vptr->ioaddr;
761 for (i = 0; i < 6; i++)
762 dev->dev_addr[i] = readb(®s->PAR[i]);
765 velocity_get_options(&vptr->options, velocity_nics, dev->name);
768 * Mask out the options cannot be set to the chip
771 vptr->options.flags &= info->flags;
774 * Enable the chip specified capbilities
777 vptr->flags = vptr->options.flags | (info->flags & 0xFF000000UL);
779 vptr->wol_opts = vptr->options.wol_opts;
780 vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
782 vptr->phy_id = MII_GET_PHY_ID(vptr->mac_regs);
784 dev->irq = pdev->irq;
785 dev->open = velocity_open;
786 dev->hard_start_xmit = velocity_xmit;
787 dev->stop = velocity_close;
788 dev->get_stats = velocity_get_stats;
789 dev->set_multicast_list = velocity_set_multi;
790 dev->do_ioctl = velocity_ioctl;
791 dev->ethtool_ops = &velocity_ethtool_ops;
792 dev->change_mtu = velocity_change_mtu;
793 #ifdef VELOCITY_ZERO_COPY_SUPPORT
794 dev->features |= NETIF_F_SG;
797 if (vptr->flags & VELOCITY_FLAGS_TX_CSUM) {
798 dev->features |= NETIF_F_IP_CSUM;
801 ret = register_netdev(dev);
805 if (velocity_get_link(dev))
806 netif_carrier_off(dev);
808 velocity_print_info(vptr);
809 pci_set_drvdata(pdev, dev);
811 /* and leave the chip powered down */
813 pci_set_power_state(pdev, PCI_D3hot);
818 spin_lock_irqsave(&velocity_dev_list_lock, flags);
819 list_add(&vptr->list, &velocity_dev_list);
820 spin_unlock_irqrestore(&velocity_dev_list_lock, flags);
830 pci_release_regions(pdev);
832 pci_disable_device(pdev);
839 * velocity_print_info - per driver data
842 * Print per driver data as the kernel driver finds Velocity
846 static void __devinit velocity_print_info(struct velocity_info *vptr)
848 struct net_device *dev = vptr->dev;
850 printk(KERN_INFO "%s: %s\n", dev->name, get_chip_name(vptr->chip_id));
851 printk(KERN_INFO "%s: Ethernet Address: %2.2X:%2.2X:%2.2X:%2.2X:%2.2X:%2.2X\n",
853 dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2],
854 dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5]);
858 * velocity_init_info - init private data
860 * @vptr: Velocity info
863 * Set up the initial velocity_info struct for the device that has been
867 static void __devinit velocity_init_info(struct pci_dev *pdev,
868 struct velocity_info *vptr,
869 const struct velocity_info_tbl *info)
871 memset(vptr, 0, sizeof(struct velocity_info));
874 vptr->chip_id = info->chip_id;
875 vptr->num_txq = info->txqueue;
876 vptr->multicast_limit = MCAM_SIZE;
877 spin_lock_init(&vptr->lock);
878 INIT_LIST_HEAD(&vptr->list);
882 * velocity_get_pci_info - retrieve PCI info for device
883 * @vptr: velocity device
884 * @pdev: PCI device it matches
886 * Retrieve the PCI configuration space data that interests us from
887 * the kernel PCI layer
890 static int __devinit velocity_get_pci_info(struct velocity_info *vptr, struct pci_dev *pdev)
892 vptr->rev_id = pdev->revision;
894 pci_set_master(pdev);
896 vptr->ioaddr = pci_resource_start(pdev, 0);
897 vptr->memaddr = pci_resource_start(pdev, 1);
899 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_IO)) {
901 "region #0 is not an I/O resource, aborting.\n");
905 if ((pci_resource_flags(pdev, 1) & IORESOURCE_IO)) {
907 "region #1 is an I/O resource, aborting.\n");
911 if (pci_resource_len(pdev, 1) < VELOCITY_IO_SIZE) {
912 dev_err(&pdev->dev, "region #1 is too small.\n");
921 * velocity_init_rings - set up DMA rings
922 * @vptr: Velocity to set up
924 * Allocate PCI mapped DMA rings for the receive and transmit layer
928 static int velocity_init_rings(struct velocity_info *vptr)
937 * Allocate all RD/TD rings a single pool
940 psize = vptr->options.numrx * sizeof(struct rx_desc) +
941 vptr->options.numtx * sizeof(struct tx_desc) * vptr->num_txq;
944 * pci_alloc_consistent() fulfills the requirement for 64 bytes
947 pool = pci_alloc_consistent(vptr->pdev, psize, &pool_dma);
950 printk(KERN_ERR "%s : DMA memory allocation failed.\n",
955 memset(pool, 0, psize);
957 vptr->rd_ring = (struct rx_desc *) pool;
959 vptr->rd_pool_dma = pool_dma;
961 tsize = vptr->options.numtx * PKT_BUF_SZ * vptr->num_txq;
962 vptr->tx_bufs = pci_alloc_consistent(vptr->pdev, tsize,
965 if (vptr->tx_bufs == NULL) {
966 printk(KERN_ERR "%s: DMA memory allocation failed.\n",
968 pci_free_consistent(vptr->pdev, psize, pool, pool_dma);
972 memset(vptr->tx_bufs, 0, vptr->options.numtx * PKT_BUF_SZ * vptr->num_txq);
974 i = vptr->options.numrx * sizeof(struct rx_desc);
977 for (i = 0; i < vptr->num_txq; i++) {
978 int offset = vptr->options.numtx * sizeof(struct tx_desc);
980 vptr->td_pool_dma[i] = pool_dma;
981 vptr->td_rings[i] = (struct tx_desc *) pool;
989 * velocity_free_rings - free PCI ring pointers
990 * @vptr: Velocity to free from
992 * Clean up the PCI ring buffers allocated to this velocity.
995 static void velocity_free_rings(struct velocity_info *vptr)
999 size = vptr->options.numrx * sizeof(struct rx_desc) +
1000 vptr->options.numtx * sizeof(struct tx_desc) * vptr->num_txq;
1002 pci_free_consistent(vptr->pdev, size, vptr->rd_ring, vptr->rd_pool_dma);
1004 size = vptr->options.numtx * PKT_BUF_SZ * vptr->num_txq;
1006 pci_free_consistent(vptr->pdev, size, vptr->tx_bufs, vptr->tx_bufs_dma);
1009 static inline void velocity_give_many_rx_descs(struct velocity_info *vptr)
1011 struct mac_regs __iomem *regs = vptr->mac_regs;
1012 int avail, dirty, unusable;
1015 * RD number must be equal to 4X per hardware spec
1016 * (programming guide rev 1.20, p.13)
1018 if (vptr->rd_filled < 4)
1023 unusable = vptr->rd_filled & 0x0003;
1024 dirty = vptr->rd_dirty - unusable;
1025 for (avail = vptr->rd_filled & 0xfffc; avail; avail--) {
1026 dirty = (dirty > 0) ? dirty - 1 : vptr->options.numrx - 1;
1027 vptr->rd_ring[dirty].rdesc0.owner = OWNED_BY_NIC;
1030 writew(vptr->rd_filled & 0xfffc, ®s->RBRDU);
1031 vptr->rd_filled = unusable;
1034 static int velocity_rx_refill(struct velocity_info *vptr)
1036 int dirty = vptr->rd_dirty, done = 0, ret = 0;
1039 struct rx_desc *rd = vptr->rd_ring + dirty;
1041 /* Fine for an all zero Rx desc at init time as well */
1042 if (rd->rdesc0.owner == OWNED_BY_NIC)
1045 if (!vptr->rd_info[dirty].skb) {
1046 ret = velocity_alloc_rx_buf(vptr, dirty);
1051 dirty = (dirty < vptr->options.numrx - 1) ? dirty + 1 : 0;
1052 } while (dirty != vptr->rd_curr);
1055 vptr->rd_dirty = dirty;
1056 vptr->rd_filled += done;
1057 velocity_give_many_rx_descs(vptr);
1064 * velocity_init_rd_ring - set up receive ring
1065 * @vptr: velocity to configure
1067 * Allocate and set up the receive buffers for each ring slot and
1068 * assign them to the network adapter.
1071 static int velocity_init_rd_ring(struct velocity_info *vptr)
1075 vptr->rd_info = kcalloc(vptr->options.numrx,
1076 sizeof(struct velocity_rd_info), GFP_KERNEL);
1080 vptr->rd_filled = vptr->rd_dirty = vptr->rd_curr = 0;
1082 ret = velocity_rx_refill(vptr);
1084 VELOCITY_PRT(MSG_LEVEL_ERR, KERN_ERR
1085 "%s: failed to allocate RX buffer.\n", vptr->dev->name);
1086 velocity_free_rd_ring(vptr);
1093 * velocity_free_rd_ring - free receive ring
1094 * @vptr: velocity to clean up
1096 * Free the receive buffers for each ring slot and any
1097 * attached socket buffers that need to go away.
1100 static void velocity_free_rd_ring(struct velocity_info *vptr)
1104 if (vptr->rd_info == NULL)
1107 for (i = 0; i < vptr->options.numrx; i++) {
1108 struct velocity_rd_info *rd_info = &(vptr->rd_info[i]);
1109 struct rx_desc *rd = vptr->rd_ring + i;
1111 memset(rd, 0, sizeof(*rd));
1115 pci_unmap_single(vptr->pdev, rd_info->skb_dma, vptr->rx_buf_sz,
1116 PCI_DMA_FROMDEVICE);
1117 rd_info->skb_dma = (dma_addr_t) NULL;
1119 dev_kfree_skb(rd_info->skb);
1120 rd_info->skb = NULL;
1123 kfree(vptr->rd_info);
1124 vptr->rd_info = NULL;
1128 * velocity_init_td_ring - set up transmit ring
1131 * Set up the transmit ring and chain the ring pointers together.
1132 * Returns zero on success or a negative posix errno code for
1136 static int velocity_init_td_ring(struct velocity_info *vptr)
1141 struct velocity_td_info *td_info;
1143 /* Init the TD ring entries */
1144 for (j = 0; j < vptr->num_txq; j++) {
1145 curr = vptr->td_pool_dma[j];
1147 vptr->td_infos[j] = kcalloc(vptr->options.numtx,
1148 sizeof(struct velocity_td_info),
1150 if (!vptr->td_infos[j]) {
1152 kfree(vptr->td_infos[j]);
1156 for (i = 0; i < vptr->options.numtx; i++, curr += sizeof(struct tx_desc)) {
1157 td = &(vptr->td_rings[j][i]);
1158 td_info = &(vptr->td_infos[j][i]);
1159 td_info->buf = vptr->tx_bufs +
1160 (j * vptr->options.numtx + i) * PKT_BUF_SZ;
1161 td_info->buf_dma = vptr->tx_bufs_dma +
1162 (j * vptr->options.numtx + i) * PKT_BUF_SZ;
1164 vptr->td_tail[j] = vptr->td_curr[j] = vptr->td_used[j] = 0;
1170 * FIXME: could we merge this with velocity_free_tx_buf ?
1173 static void velocity_free_td_ring_entry(struct velocity_info *vptr,
1176 struct velocity_td_info * td_info = &(vptr->td_infos[q][n]);
1179 if (td_info == NULL)
1183 for (i = 0; i < td_info->nskb_dma; i++)
1185 if (td_info->skb_dma[i]) {
1186 pci_unmap_single(vptr->pdev, td_info->skb_dma[i],
1187 td_info->skb->len, PCI_DMA_TODEVICE);
1188 td_info->skb_dma[i] = (dma_addr_t) NULL;
1191 dev_kfree_skb(td_info->skb);
1192 td_info->skb = NULL;
1197 * velocity_free_td_ring - free td ring
1200 * Free up the transmit ring for this particular velocity adapter.
1201 * We free the ring contents but not the ring itself.
1204 static void velocity_free_td_ring(struct velocity_info *vptr)
1208 for (j = 0; j < vptr->num_txq; j++) {
1209 if (vptr->td_infos[j] == NULL)
1211 for (i = 0; i < vptr->options.numtx; i++) {
1212 velocity_free_td_ring_entry(vptr, j, i);
1215 kfree(vptr->td_infos[j]);
1216 vptr->td_infos[j] = NULL;
1221 * velocity_rx_srv - service RX interrupt
1223 * @status: adapter status (unused)
1225 * Walk the receive ring of the velocity adapter and remove
1226 * any received packets from the receive queue. Hand the ring
1227 * slots back to the adapter for reuse.
1230 static int velocity_rx_srv(struct velocity_info *vptr, int status)
1232 struct net_device_stats *stats = &vptr->stats;
1233 int rd_curr = vptr->rd_curr;
1237 struct rx_desc *rd = vptr->rd_ring + rd_curr;
1239 if (!vptr->rd_info[rd_curr].skb)
1242 if (rd->rdesc0.owner == OWNED_BY_NIC)
1248 * Don't drop CE or RL error frame although RXOK is off
1250 if ((rd->rdesc0.RSR & RSR_RXOK) || (!(rd->rdesc0.RSR & RSR_RXOK) && (rd->rdesc0.RSR & (RSR_CE | RSR_RL)))) {
1251 if (velocity_receive_frame(vptr, rd_curr) < 0)
1252 stats->rx_dropped++;
1254 if (rd->rdesc0.RSR & RSR_CRC)
1255 stats->rx_crc_errors++;
1256 if (rd->rdesc0.RSR & RSR_FAE)
1257 stats->rx_frame_errors++;
1259 stats->rx_dropped++;
1264 vptr->dev->last_rx = jiffies;
1267 if (rd_curr >= vptr->options.numrx)
1269 } while (++works <= 15);
1271 vptr->rd_curr = rd_curr;
1273 if (works > 0 && velocity_rx_refill(vptr) < 0) {
1274 VELOCITY_PRT(MSG_LEVEL_ERR, KERN_ERR
1275 "%s: rx buf allocation failure\n", vptr->dev->name);
1283 * velocity_rx_csum - checksum process
1284 * @rd: receive packet descriptor
1285 * @skb: network layer packet buffer
1287 * Process the status bits for the received packet and determine
1288 * if the checksum was computed and verified by the hardware
1291 static inline void velocity_rx_csum(struct rx_desc *rd, struct sk_buff *skb)
1293 skb->ip_summed = CHECKSUM_NONE;
1295 if (rd->rdesc1.CSM & CSM_IPKT) {
1296 if (rd->rdesc1.CSM & CSM_IPOK) {
1297 if ((rd->rdesc1.CSM & CSM_TCPKT) ||
1298 (rd->rdesc1.CSM & CSM_UDPKT)) {
1299 if (!(rd->rdesc1.CSM & CSM_TUPOK)) {
1303 skb->ip_summed = CHECKSUM_UNNECESSARY;
1309 * velocity_rx_copy - in place Rx copy for small packets
1310 * @rx_skb: network layer packet buffer candidate
1311 * @pkt_size: received data size
1312 * @rd: receive packet descriptor
1313 * @dev: network device
1315 * Replace the current skb that is scheduled for Rx processing by a
1316 * shorter, immediatly allocated skb, if the received packet is small
1317 * enough. This function returns a negative value if the received
1318 * packet is too big or if memory is exhausted.
1320 static inline int velocity_rx_copy(struct sk_buff **rx_skb, int pkt_size,
1321 struct velocity_info *vptr)
1325 if (pkt_size < rx_copybreak) {
1326 struct sk_buff *new_skb;
1328 new_skb = dev_alloc_skb(pkt_size + 2);
1330 new_skb->dev = vptr->dev;
1331 new_skb->ip_summed = rx_skb[0]->ip_summed;
1333 if (vptr->flags & VELOCITY_FLAGS_IP_ALIGN)
1334 skb_reserve(new_skb, 2);
1336 skb_copy_from_linear_data(rx_skb[0], new_skb->data,
1347 * velocity_iph_realign - IP header alignment
1348 * @vptr: velocity we are handling
1349 * @skb: network layer packet buffer
1350 * @pkt_size: received data size
1352 * Align IP header on a 2 bytes boundary. This behavior can be
1353 * configured by the user.
1355 static inline void velocity_iph_realign(struct velocity_info *vptr,
1356 struct sk_buff *skb, int pkt_size)
1358 /* FIXME - memmove ? */
1359 if (vptr->flags & VELOCITY_FLAGS_IP_ALIGN) {
1362 for (i = pkt_size; i >= 0; i--)
1363 *(skb->data + i + 2) = *(skb->data + i);
1364 skb_reserve(skb, 2);
1369 * velocity_receive_frame - received packet processor
1370 * @vptr: velocity we are handling
1373 * A packet has arrived. We process the packet and if appropriate
1374 * pass the frame up the network stack
1377 static int velocity_receive_frame(struct velocity_info *vptr, int idx)
1379 void (*pci_action)(struct pci_dev *, dma_addr_t, size_t, int);
1380 struct net_device_stats *stats = &vptr->stats;
1381 struct velocity_rd_info *rd_info = &(vptr->rd_info[idx]);
1382 struct rx_desc *rd = &(vptr->rd_ring[idx]);
1383 int pkt_len = rd->rdesc0.len;
1384 struct sk_buff *skb;
1386 if (rd->rdesc0.RSR & (RSR_STP | RSR_EDP)) {
1387 VELOCITY_PRT(MSG_LEVEL_VERBOSE, KERN_ERR " %s : the received frame span multple RDs.\n", vptr->dev->name);
1388 stats->rx_length_errors++;
1392 if (rd->rdesc0.RSR & RSR_MAR)
1393 vptr->stats.multicast++;
1397 pci_dma_sync_single_for_cpu(vptr->pdev, rd_info->skb_dma,
1398 vptr->rx_buf_sz, PCI_DMA_FROMDEVICE);
1401 * Drop frame not meeting IEEE 802.3
1404 if (vptr->flags & VELOCITY_FLAGS_VAL_PKT_LEN) {
1405 if (rd->rdesc0.RSR & RSR_RL) {
1406 stats->rx_length_errors++;
1411 pci_action = pci_dma_sync_single_for_device;
1413 velocity_rx_csum(rd, skb);
1415 if (velocity_rx_copy(&skb, pkt_len, vptr) < 0) {
1416 velocity_iph_realign(vptr, skb, pkt_len);
1417 pci_action = pci_unmap_single;
1418 rd_info->skb = NULL;
1421 pci_action(vptr->pdev, rd_info->skb_dma, vptr->rx_buf_sz,
1422 PCI_DMA_FROMDEVICE);
1424 skb_put(skb, pkt_len - 4);
1425 skb->protocol = eth_type_trans(skb, vptr->dev);
1427 stats->rx_bytes += pkt_len;
1434 * velocity_alloc_rx_buf - allocate aligned receive buffer
1438 * Allocate a new full sized buffer for the reception of a frame and
1439 * map it into PCI space for the hardware to use. The hardware
1440 * requires *64* byte alignment of the buffer which makes life
1441 * less fun than would be ideal.
1444 static int velocity_alloc_rx_buf(struct velocity_info *vptr, int idx)
1446 struct rx_desc *rd = &(vptr->rd_ring[idx]);
1447 struct velocity_rd_info *rd_info = &(vptr->rd_info[idx]);
1449 rd_info->skb = dev_alloc_skb(vptr->rx_buf_sz + 64);
1450 if (rd_info->skb == NULL)
1454 * Do the gymnastics to get the buffer head for data at
1457 skb_reserve(rd_info->skb, (unsigned long) rd_info->skb->data & 63);
1458 rd_info->skb->dev = vptr->dev;
1459 rd_info->skb_dma = pci_map_single(vptr->pdev, rd_info->skb->data, vptr->rx_buf_sz, PCI_DMA_FROMDEVICE);
1462 * Fill in the descriptor to match
1465 *((u32 *) & (rd->rdesc0)) = 0;
1466 rd->len = cpu_to_le32(vptr->rx_buf_sz);
1468 rd->pa_low = cpu_to_le32(rd_info->skb_dma);
1474 * tx_srv - transmit interrupt service
1478 * Scan the queues looking for transmitted packets that
1479 * we can complete and clean up. Update any statistics as
1483 static int velocity_tx_srv(struct velocity_info *vptr, u32 status)
1490 struct velocity_td_info *tdinfo;
1491 struct net_device_stats *stats = &vptr->stats;
1493 for (qnum = 0; qnum < vptr->num_txq; qnum++) {
1494 for (idx = vptr->td_tail[qnum]; vptr->td_used[qnum] > 0;
1495 idx = (idx + 1) % vptr->options.numtx) {
1500 td = &(vptr->td_rings[qnum][idx]);
1501 tdinfo = &(vptr->td_infos[qnum][idx]);
1503 if (td->tdesc0.owner == OWNED_BY_NIC)
1509 if (td->tdesc0.TSR & TSR0_TERR) {
1511 stats->tx_dropped++;
1512 if (td->tdesc0.TSR & TSR0_CDH)
1513 stats->tx_heartbeat_errors++;
1514 if (td->tdesc0.TSR & TSR0_CRS)
1515 stats->tx_carrier_errors++;
1516 if (td->tdesc0.TSR & TSR0_ABT)
1517 stats->tx_aborted_errors++;
1518 if (td->tdesc0.TSR & TSR0_OWC)
1519 stats->tx_window_errors++;
1521 stats->tx_packets++;
1522 stats->tx_bytes += tdinfo->skb->len;
1524 velocity_free_tx_buf(vptr, tdinfo);
1525 vptr->td_used[qnum]--;
1527 vptr->td_tail[qnum] = idx;
1529 if (AVAIL_TD(vptr, qnum) < 1) {
1534 * Look to see if we should kick the transmit network
1535 * layer for more work.
1537 if (netif_queue_stopped(vptr->dev) && (full == 0)
1538 && (!(vptr->mii_status & VELOCITY_LINK_FAIL))) {
1539 netif_wake_queue(vptr->dev);
1545 * velocity_print_link_status - link status reporting
1546 * @vptr: velocity to report on
1548 * Turn the link status of the velocity card into a kernel log
1549 * description of the new link state, detailing speed and duplex
1553 static void velocity_print_link_status(struct velocity_info *vptr)
1556 if (vptr->mii_status & VELOCITY_LINK_FAIL) {
1557 VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: failed to detect cable link\n", vptr->dev->name);
1558 } else if (vptr->options.spd_dpx == SPD_DPX_AUTO) {
1559 VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: Link auto-negotiation", vptr->dev->name);
1561 if (vptr->mii_status & VELOCITY_SPEED_1000)
1562 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 1000M bps");
1563 else if (vptr->mii_status & VELOCITY_SPEED_100)
1564 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 100M bps");
1566 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 10M bps");
1568 if (vptr->mii_status & VELOCITY_DUPLEX_FULL)
1569 VELOCITY_PRT(MSG_LEVEL_INFO, " full duplex\n");
1571 VELOCITY_PRT(MSG_LEVEL_INFO, " half duplex\n");
1573 VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: Link forced", vptr->dev->name);
1574 switch (vptr->options.spd_dpx) {
1575 case SPD_DPX_100_HALF:
1576 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 100M bps half duplex\n");
1578 case SPD_DPX_100_FULL:
1579 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 100M bps full duplex\n");
1581 case SPD_DPX_10_HALF:
1582 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 10M bps half duplex\n");
1584 case SPD_DPX_10_FULL:
1585 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 10M bps full duplex\n");
1594 * velocity_error - handle error from controller
1596 * @status: card status
1598 * Process an error report from the hardware and attempt to recover
1599 * the card itself. At the moment we cannot recover from some
1600 * theoretically impossible errors but this could be fixed using
1601 * the pci_device_failed logic to bounce the hardware
1605 static void velocity_error(struct velocity_info *vptr, int status)
1608 if (status & ISR_TXSTLI) {
1609 struct mac_regs __iomem * regs = vptr->mac_regs;
1611 printk(KERN_ERR "TD structure error TDindex=%hx\n", readw(®s->TDIdx[0]));
1612 BYTE_REG_BITS_ON(TXESR_TDSTR, ®s->TXESR);
1613 writew(TRDCSR_RUN, ®s->TDCSRClr);
1614 netif_stop_queue(vptr->dev);
1616 /* FIXME: port over the pci_device_failed code and use it
1620 if (status & ISR_SRCI) {
1621 struct mac_regs __iomem * regs = vptr->mac_regs;
1624 if (vptr->options.spd_dpx == SPD_DPX_AUTO) {
1625 vptr->mii_status = check_connection_type(regs);
1628 * If it is a 3119, disable frame bursting in
1629 * halfduplex mode and enable it in fullduplex
1632 if (vptr->rev_id < REV_ID_VT3216_A0) {
1633 if (vptr->mii_status | VELOCITY_DUPLEX_FULL)
1634 BYTE_REG_BITS_ON(TCR_TB2BDIS, ®s->TCR);
1636 BYTE_REG_BITS_OFF(TCR_TB2BDIS, ®s->TCR);
1639 * Only enable CD heart beat counter in 10HD mode
1641 if (!(vptr->mii_status & VELOCITY_DUPLEX_FULL) && (vptr->mii_status & VELOCITY_SPEED_10)) {
1642 BYTE_REG_BITS_OFF(TESTCFG_HBDIS, ®s->TESTCFG);
1644 BYTE_REG_BITS_ON(TESTCFG_HBDIS, ®s->TESTCFG);
1648 * Get link status from PHYSR0
1650 linked = readb(®s->PHYSR0) & PHYSR0_LINKGD;
1653 vptr->mii_status &= ~VELOCITY_LINK_FAIL;
1654 netif_carrier_on(vptr->dev);
1656 vptr->mii_status |= VELOCITY_LINK_FAIL;
1657 netif_carrier_off(vptr->dev);
1660 velocity_print_link_status(vptr);
1661 enable_flow_control_ability(vptr);
1664 * Re-enable auto-polling because SRCI will disable
1668 enable_mii_autopoll(regs);
1670 if (vptr->mii_status & VELOCITY_LINK_FAIL)
1671 netif_stop_queue(vptr->dev);
1673 netif_wake_queue(vptr->dev);
1676 if (status & ISR_MIBFI)
1677 velocity_update_hw_mibs(vptr);
1678 if (status & ISR_LSTEI)
1679 mac_rx_queue_wake(vptr->mac_regs);
1683 * velocity_free_tx_buf - free transmit buffer
1687 * Release an transmit buffer. If the buffer was preallocated then
1688 * recycle it, if not then unmap the buffer.
1691 static void velocity_free_tx_buf(struct velocity_info *vptr, struct velocity_td_info *tdinfo)
1693 struct sk_buff *skb = tdinfo->skb;
1697 * Don't unmap the pre-allocated tx_bufs
1699 if (tdinfo->skb_dma && (tdinfo->skb_dma[0] != tdinfo->buf_dma)) {
1701 for (i = 0; i < tdinfo->nskb_dma; i++) {
1702 #ifdef VELOCITY_ZERO_COPY_SUPPORT
1703 pci_unmap_single(vptr->pdev, tdinfo->skb_dma[i], td->tdesc1.len, PCI_DMA_TODEVICE);
1705 pci_unmap_single(vptr->pdev, tdinfo->skb_dma[i], skb->len, PCI_DMA_TODEVICE);
1707 tdinfo->skb_dma[i] = 0;
1710 dev_kfree_skb_irq(skb);
1715 * velocity_open - interface activation callback
1716 * @dev: network layer device to open
1718 * Called when the network layer brings the interface up. Returns
1719 * a negative posix error code on failure, or zero on success.
1721 * All the ring allocation and set up is done on open for this
1722 * adapter to minimise memory usage when inactive
1725 static int velocity_open(struct net_device *dev)
1727 struct velocity_info *vptr = netdev_priv(dev);
1730 vptr->rx_buf_sz = (dev->mtu <= 1504 ? PKT_BUF_SZ : dev->mtu + 32);
1732 ret = velocity_init_rings(vptr);
1736 ret = velocity_init_rd_ring(vptr);
1738 goto err_free_desc_rings;
1740 ret = velocity_init_td_ring(vptr);
1742 goto err_free_rd_ring;
1744 /* Ensure chip is running */
1745 pci_set_power_state(vptr->pdev, PCI_D0);
1747 velocity_init_registers(vptr, VELOCITY_INIT_COLD);
1749 ret = request_irq(vptr->pdev->irq, &velocity_intr, IRQF_SHARED,
1752 /* Power down the chip */
1753 pci_set_power_state(vptr->pdev, PCI_D3hot);
1754 goto err_free_td_ring;
1757 mac_enable_int(vptr->mac_regs);
1758 netif_start_queue(dev);
1759 vptr->flags |= VELOCITY_FLAGS_OPENED;
1764 velocity_free_td_ring(vptr);
1766 velocity_free_rd_ring(vptr);
1767 err_free_desc_rings:
1768 velocity_free_rings(vptr);
1773 * velocity_change_mtu - MTU change callback
1774 * @dev: network device
1775 * @new_mtu: desired MTU
1777 * Handle requests from the networking layer for MTU change on
1778 * this interface. It gets called on a change by the network layer.
1779 * Return zero for success or negative posix error code.
1782 static int velocity_change_mtu(struct net_device *dev, int new_mtu)
1784 struct velocity_info *vptr = netdev_priv(dev);
1785 unsigned long flags;
1786 int oldmtu = dev->mtu;
1789 if ((new_mtu < VELOCITY_MIN_MTU) || new_mtu > (VELOCITY_MAX_MTU)) {
1790 VELOCITY_PRT(MSG_LEVEL_ERR, KERN_NOTICE "%s: Invalid MTU.\n",
1795 if (new_mtu != oldmtu) {
1796 spin_lock_irqsave(&vptr->lock, flags);
1798 netif_stop_queue(dev);
1799 velocity_shutdown(vptr);
1801 velocity_free_td_ring(vptr);
1802 velocity_free_rd_ring(vptr);
1806 vptr->rx_buf_sz = 9 * 1024;
1807 else if (new_mtu > 4096)
1808 vptr->rx_buf_sz = 8192;
1810 vptr->rx_buf_sz = 4 * 1024;
1812 ret = velocity_init_rd_ring(vptr);
1816 ret = velocity_init_td_ring(vptr);
1820 velocity_init_registers(vptr, VELOCITY_INIT_COLD);
1822 mac_enable_int(vptr->mac_regs);
1823 netif_start_queue(dev);
1825 spin_unlock_irqrestore(&vptr->lock, flags);
1832 * velocity_shutdown - shut down the chip
1833 * @vptr: velocity to deactivate
1835 * Shuts down the internal operations of the velocity and
1836 * disables interrupts, autopolling, transmit and receive
1839 static void velocity_shutdown(struct velocity_info *vptr)
1841 struct mac_regs __iomem * regs = vptr->mac_regs;
1842 mac_disable_int(regs);
1843 writel(CR0_STOP, ®s->CR0Set);
1844 writew(0xFFFF, ®s->TDCSRClr);
1845 writeb(0xFF, ®s->RDCSRClr);
1846 safe_disable_mii_autopoll(regs);
1847 mac_clear_isr(regs);
1851 * velocity_close - close adapter callback
1852 * @dev: network device
1854 * Callback from the network layer when the velocity is being
1855 * deactivated by the network layer
1858 static int velocity_close(struct net_device *dev)
1860 struct velocity_info *vptr = netdev_priv(dev);
1862 netif_stop_queue(dev);
1863 velocity_shutdown(vptr);
1865 if (vptr->flags & VELOCITY_FLAGS_WOL_ENABLED)
1866 velocity_get_ip(vptr);
1868 free_irq(dev->irq, dev);
1870 /* Power down the chip */
1871 pci_set_power_state(vptr->pdev, PCI_D3hot);
1873 /* Free the resources */
1874 velocity_free_td_ring(vptr);
1875 velocity_free_rd_ring(vptr);
1876 velocity_free_rings(vptr);
1878 vptr->flags &= (~VELOCITY_FLAGS_OPENED);
1883 * velocity_xmit - transmit packet callback
1884 * @skb: buffer to transmit
1885 * @dev: network device
1887 * Called by the networ layer to request a packet is queued to
1888 * the velocity. Returns zero on success.
1891 static int velocity_xmit(struct sk_buff *skb, struct net_device *dev)
1893 struct velocity_info *vptr = netdev_priv(dev);
1895 struct tx_desc *td_ptr;
1896 struct velocity_td_info *tdinfo;
1897 unsigned long flags;
1900 int pktlen = skb->len;
1902 #ifdef VELOCITY_ZERO_COPY_SUPPORT
1903 if (skb_shinfo(skb)->nr_frags > 6 && __skb_linearize(skb)) {
1909 spin_lock_irqsave(&vptr->lock, flags);
1911 index = vptr->td_curr[qnum];
1912 td_ptr = &(vptr->td_rings[qnum][index]);
1913 tdinfo = &(vptr->td_infos[qnum][index]);
1915 td_ptr->tdesc1.TCPLS = TCPLS_NORMAL;
1916 td_ptr->tdesc1.TCR = TCR0_TIC;
1917 td_ptr->td_buf[0].queue = 0;
1922 if (pktlen < ETH_ZLEN) {
1923 /* Cannot occur until ZC support */
1925 skb_copy_from_linear_data(skb, tdinfo->buf, skb->len);
1926 memset(tdinfo->buf + skb->len, 0, ETH_ZLEN - skb->len);
1928 tdinfo->skb_dma[0] = tdinfo->buf_dma;
1929 td_ptr->tdesc0.pktsize = pktlen;
1930 td_ptr->td_buf[0].pa_low = cpu_to_le32(tdinfo->skb_dma[0]);
1931 td_ptr->td_buf[0].pa_high = 0;
1932 td_ptr->td_buf[0].bufsize = td_ptr->tdesc0.pktsize;
1933 tdinfo->nskb_dma = 1;
1934 td_ptr->tdesc1.CMDZ = 2;
1936 #ifdef VELOCITY_ZERO_COPY_SUPPORT
1937 if (skb_shinfo(skb)->nr_frags > 0) {
1938 int nfrags = skb_shinfo(skb)->nr_frags;
1941 skb_copy_from_linear_data(skb, tdinfo->buf, skb->len);
1942 tdinfo->skb_dma[0] = tdinfo->buf_dma;
1943 td_ptr->tdesc0.pktsize =
1944 td_ptr->td_buf[0].pa_low = cpu_to_le32(tdinfo->skb_dma[0]);
1945 td_ptr->td_buf[0].pa_high = 0;
1946 td_ptr->td_buf[0].bufsize = td_ptr->tdesc0.pktsize;
1947 tdinfo->nskb_dma = 1;
1948 td_ptr->tdesc1.CMDZ = 2;
1951 tdinfo->nskb_dma = 0;
1952 tdinfo->skb_dma[i] = pci_map_single(vptr->pdev, skb->data, skb->len - skb->data_len, PCI_DMA_TODEVICE);
1954 td_ptr->tdesc0.pktsize = pktlen;
1956 /* FIXME: support 48bit DMA later */
1957 td_ptr->td_buf[i].pa_low = cpu_to_le32(tdinfo->skb_dma);
1958 td_ptr->td_buf[i].pa_high = 0;
1959 td_ptr->td_buf[i].bufsize = skb->len->skb->data_len;
1961 for (i = 0; i < nfrags; i++) {
1962 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
1963 void *addr = ((void *) page_address(frag->page + frag->page_offset));
1965 tdinfo->skb_dma[i + 1] = pci_map_single(vptr->pdev, addr, frag->size, PCI_DMA_TODEVICE);
1967 td_ptr->td_buf[i + 1].pa_low = cpu_to_le32(tdinfo->skb_dma[i + 1]);
1968 td_ptr->td_buf[i + 1].pa_high = 0;
1969 td_ptr->td_buf[i + 1].bufsize = frag->size;
1971 tdinfo->nskb_dma = i - 1;
1972 td_ptr->tdesc1.CMDZ = i;
1979 * Map the linear network buffer into PCI space and
1980 * add it to the transmit ring.
1983 tdinfo->skb_dma[0] = pci_map_single(vptr->pdev, skb->data, pktlen, PCI_DMA_TODEVICE);
1984 td_ptr->tdesc0.pktsize = pktlen;
1985 td_ptr->td_buf[0].pa_low = cpu_to_le32(tdinfo->skb_dma[0]);
1986 td_ptr->td_buf[0].pa_high = 0;
1987 td_ptr->td_buf[0].bufsize = td_ptr->tdesc0.pktsize;
1988 tdinfo->nskb_dma = 1;
1989 td_ptr->tdesc1.CMDZ = 2;
1992 if (vptr->flags & VELOCITY_FLAGS_TAGGING) {
1993 td_ptr->tdesc1.pqinf.VID = (vptr->options.vid & 0xfff);
1994 td_ptr->tdesc1.pqinf.priority = 0;
1995 td_ptr->tdesc1.pqinf.CFI = 0;
1996 td_ptr->tdesc1.TCR |= TCR0_VETAG;
2000 * Handle hardware checksum
2002 if ((vptr->flags & VELOCITY_FLAGS_TX_CSUM)
2003 && (skb->ip_summed == CHECKSUM_PARTIAL)) {
2004 const struct iphdr *ip = ip_hdr(skb);
2005 if (ip->protocol == IPPROTO_TCP)
2006 td_ptr->tdesc1.TCR |= TCR0_TCPCK;
2007 else if (ip->protocol == IPPROTO_UDP)
2008 td_ptr->tdesc1.TCR |= (TCR0_UDPCK);
2009 td_ptr->tdesc1.TCR |= TCR0_IPCK;
2013 int prev = index - 1;
2016 prev = vptr->options.numtx - 1;
2017 td_ptr->tdesc0.owner = OWNED_BY_NIC;
2018 vptr->td_used[qnum]++;
2019 vptr->td_curr[qnum] = (index + 1) % vptr->options.numtx;
2021 if (AVAIL_TD(vptr, qnum) < 1)
2022 netif_stop_queue(dev);
2024 td_ptr = &(vptr->td_rings[qnum][prev]);
2025 td_ptr->td_buf[0].queue = 1;
2026 mac_tx_queue_wake(vptr->mac_regs, qnum);
2028 dev->trans_start = jiffies;
2029 spin_unlock_irqrestore(&vptr->lock, flags);
2034 * velocity_intr - interrupt callback
2035 * @irq: interrupt number
2036 * @dev_instance: interrupting device
2038 * Called whenever an interrupt is generated by the velocity
2039 * adapter IRQ line. We may not be the source of the interrupt
2040 * and need to identify initially if we are, and if not exit as
2041 * efficiently as possible.
2044 static int velocity_intr(int irq, void *dev_instance)
2046 struct net_device *dev = dev_instance;
2047 struct velocity_info *vptr = netdev_priv(dev);
2052 spin_lock(&vptr->lock);
2053 isr_status = mac_read_isr(vptr->mac_regs);
2056 if (isr_status == 0) {
2057 spin_unlock(&vptr->lock);
2061 mac_disable_int(vptr->mac_regs);
2064 * Keep processing the ISR until we have completed
2065 * processing and the isr_status becomes zero
2068 while (isr_status != 0) {
2069 mac_write_isr(vptr->mac_regs, isr_status);
2070 if (isr_status & (~(ISR_PRXI | ISR_PPRXI | ISR_PTXI | ISR_PPTXI)))
2071 velocity_error(vptr, isr_status);
2072 if (isr_status & (ISR_PRXI | ISR_PPRXI))
2073 max_count += velocity_rx_srv(vptr, isr_status);
2074 if (isr_status & (ISR_PTXI | ISR_PPTXI))
2075 max_count += velocity_tx_srv(vptr, isr_status);
2076 isr_status = mac_read_isr(vptr->mac_regs);
2077 if (max_count > vptr->options.int_works)
2079 printk(KERN_WARNING "%s: excessive work at interrupt.\n",
2084 spin_unlock(&vptr->lock);
2085 mac_enable_int(vptr->mac_regs);
2092 * velocity_set_multi - filter list change callback
2093 * @dev: network device
2095 * Called by the network layer when the filter lists need to change
2096 * for a velocity adapter. Reload the CAMs with the new address
2100 static void velocity_set_multi(struct net_device *dev)
2102 struct velocity_info *vptr = netdev_priv(dev);
2103 struct mac_regs __iomem * regs = vptr->mac_regs;
2106 struct dev_mc_list *mclist;
2108 if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */
2109 writel(0xffffffff, ®s->MARCAM[0]);
2110 writel(0xffffffff, ®s->MARCAM[4]);
2111 rx_mode = (RCR_AM | RCR_AB | RCR_PROM);
2112 } else if ((dev->mc_count > vptr->multicast_limit)
2113 || (dev->flags & IFF_ALLMULTI)) {
2114 writel(0xffffffff, ®s->MARCAM[0]);
2115 writel(0xffffffff, ®s->MARCAM[4]);
2116 rx_mode = (RCR_AM | RCR_AB);
2118 int offset = MCAM_SIZE - vptr->multicast_limit;
2119 mac_get_cam_mask(regs, vptr->mCAMmask, VELOCITY_MULTICAST_CAM);
2121 for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count; i++, mclist = mclist->next) {
2122 mac_set_cam(regs, i + offset, mclist->dmi_addr, VELOCITY_MULTICAST_CAM);
2123 vptr->mCAMmask[(offset + i) / 8] |= 1 << ((offset + i) & 7);
2126 mac_set_cam_mask(regs, vptr->mCAMmask, VELOCITY_MULTICAST_CAM);
2127 rx_mode = (RCR_AM | RCR_AB);
2129 if (dev->mtu > 1500)
2132 BYTE_REG_BITS_ON(rx_mode, ®s->RCR);
2137 * velocity_get_status - statistics callback
2138 * @dev: network device
2140 * Callback from the network layer to allow driver statistics
2141 * to be resynchronized with hardware collected state. In the
2142 * case of the velocity we need to pull the MIB counters from
2143 * the hardware into the counters before letting the network
2144 * layer display them.
2147 static struct net_device_stats *velocity_get_stats(struct net_device *dev)
2149 struct velocity_info *vptr = netdev_priv(dev);
2151 /* If the hardware is down, don't touch MII */
2152 if(!netif_running(dev))
2153 return &vptr->stats;
2155 spin_lock_irq(&vptr->lock);
2156 velocity_update_hw_mibs(vptr);
2157 spin_unlock_irq(&vptr->lock);
2159 vptr->stats.rx_packets = vptr->mib_counter[HW_MIB_ifRxAllPkts];
2160 vptr->stats.rx_errors = vptr->mib_counter[HW_MIB_ifRxErrorPkts];
2161 vptr->stats.rx_length_errors = vptr->mib_counter[HW_MIB_ifInRangeLengthErrors];
2163 // unsigned long rx_dropped; /* no space in linux buffers */
2164 vptr->stats.collisions = vptr->mib_counter[HW_MIB_ifTxEtherCollisions];
2165 /* detailed rx_errors: */
2166 // unsigned long rx_length_errors;
2167 // unsigned long rx_over_errors; /* receiver ring buff overflow */
2168 vptr->stats.rx_crc_errors = vptr->mib_counter[HW_MIB_ifRxPktCRCE];
2169 // unsigned long rx_frame_errors; /* recv'd frame alignment error */
2170 // unsigned long rx_fifo_errors; /* recv'r fifo overrun */
2171 // unsigned long rx_missed_errors; /* receiver missed packet */
2173 /* detailed tx_errors */
2174 // unsigned long tx_fifo_errors;
2176 return &vptr->stats;
2181 * velocity_ioctl - ioctl entry point
2182 * @dev: network device
2183 * @rq: interface request ioctl
2184 * @cmd: command code
2186 * Called when the user issues an ioctl request to the network
2187 * device in question. The velocity interface supports MII.
2190 static int velocity_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2192 struct velocity_info *vptr = netdev_priv(dev);
2195 /* If we are asked for information and the device is power
2196 saving then we need to bring the device back up to talk to it */
2198 if (!netif_running(dev))
2199 pci_set_power_state(vptr->pdev, PCI_D0);
2202 case SIOCGMIIPHY: /* Get address of MII PHY in use. */
2203 case SIOCGMIIREG: /* Read MII PHY register. */
2204 case SIOCSMIIREG: /* Write to MII PHY register. */
2205 ret = velocity_mii_ioctl(dev, rq, cmd);
2211 if (!netif_running(dev))
2212 pci_set_power_state(vptr->pdev, PCI_D3hot);
2219 * Definition for our device driver. The PCI layer interface
2220 * uses this to handle all our card discover and plugging
2223 static struct pci_driver velocity_driver = {
2224 .name = VELOCITY_NAME,
2225 .id_table = velocity_id_table,
2226 .probe = velocity_found1,
2227 .remove = __devexit_p(velocity_remove1),
2229 .suspend = velocity_suspend,
2230 .resume = velocity_resume,
2235 * velocity_init_module - load time function
2237 * Called when the velocity module is loaded. The PCI driver
2238 * is registered with the PCI layer, and in turn will call
2239 * the probe functions for each velocity adapter installed
2243 static int __init velocity_init_module(void)
2247 velocity_register_notifier();
2248 ret = pci_register_driver(&velocity_driver);
2250 velocity_unregister_notifier();
2255 * velocity_cleanup - module unload
2257 * When the velocity hardware is unloaded this function is called.
2258 * It will clean up the notifiers and the unregister the PCI
2259 * driver interface for this hardware. This in turn cleans up
2260 * all discovered interfaces before returning from the function
2263 static void __exit velocity_cleanup_module(void)
2265 velocity_unregister_notifier();
2266 pci_unregister_driver(&velocity_driver);
2269 module_init(velocity_init_module);
2270 module_exit(velocity_cleanup_module);
2274 * MII access , media link mode setting functions
2279 * mii_init - set up MII
2280 * @vptr: velocity adapter
2281 * @mii_status: links tatus
2283 * Set up the PHY for the current link state.
2286 static void mii_init(struct velocity_info *vptr, u32 mii_status)
2290 switch (PHYID_GET_PHY_ID(vptr->phy_id)) {
2291 case PHYID_CICADA_CS8201:
2293 * Reset to hardware default
2295 MII_REG_BITS_OFF((ANAR_ASMDIR | ANAR_PAUSE), MII_REG_ANAR, vptr->mac_regs);
2297 * Turn on ECHODIS bit in NWay-forced full mode and turn it
2298 * off it in NWay-forced half mode for NWay-forced v.s.
2299 * legacy-forced issue.
2301 if (vptr->mii_status & VELOCITY_DUPLEX_FULL)
2302 MII_REG_BITS_ON(TCSR_ECHODIS, MII_REG_TCSR, vptr->mac_regs);
2304 MII_REG_BITS_OFF(TCSR_ECHODIS, MII_REG_TCSR, vptr->mac_regs);
2306 * Turn on Link/Activity LED enable bit for CIS8201
2308 MII_REG_BITS_ON(PLED_LALBE, MII_REG_PLED, vptr->mac_regs);
2310 case PHYID_VT3216_32BIT:
2311 case PHYID_VT3216_64BIT:
2313 * Reset to hardware default
2315 MII_REG_BITS_ON((ANAR_ASMDIR | ANAR_PAUSE), MII_REG_ANAR, vptr->mac_regs);
2317 * Turn on ECHODIS bit in NWay-forced full mode and turn it
2318 * off it in NWay-forced half mode for NWay-forced v.s.
2319 * legacy-forced issue
2321 if (vptr->mii_status & VELOCITY_DUPLEX_FULL)
2322 MII_REG_BITS_ON(TCSR_ECHODIS, MII_REG_TCSR, vptr->mac_regs);
2324 MII_REG_BITS_OFF(TCSR_ECHODIS, MII_REG_TCSR, vptr->mac_regs);
2327 case PHYID_MARVELL_1000:
2328 case PHYID_MARVELL_1000S:
2330 * Assert CRS on Transmit
2332 MII_REG_BITS_ON(PSCR_ACRSTX, MII_REG_PSCR, vptr->mac_regs);
2334 * Reset to hardware default
2336 MII_REG_BITS_ON((ANAR_ASMDIR | ANAR_PAUSE), MII_REG_ANAR, vptr->mac_regs);
2341 velocity_mii_read(vptr->mac_regs, MII_REG_BMCR, &BMCR);
2342 if (BMCR & BMCR_ISO) {
2344 velocity_mii_write(vptr->mac_regs, MII_REG_BMCR, BMCR);
2349 * safe_disable_mii_autopoll - autopoll off
2350 * @regs: velocity registers
2352 * Turn off the autopoll and wait for it to disable on the chip
2355 static void safe_disable_mii_autopoll(struct mac_regs __iomem * regs)
2359 /* turn off MAUTO */
2360 writeb(0, ®s->MIICR);
2361 for (ww = 0; ww < W_MAX_TIMEOUT; ww++) {
2363 if (BYTE_REG_BITS_IS_ON(MIISR_MIDLE, ®s->MIISR))
2369 * enable_mii_autopoll - turn on autopolling
2370 * @regs: velocity registers
2372 * Enable the MII link status autopoll feature on the Velocity
2373 * hardware. Wait for it to enable.
2376 static void enable_mii_autopoll(struct mac_regs __iomem * regs)
2380 writeb(0, &(regs->MIICR));
2381 writeb(MIIADR_SWMPL, ®s->MIIADR);
2383 for (ii = 0; ii < W_MAX_TIMEOUT; ii++) {
2385 if (BYTE_REG_BITS_IS_ON(MIISR_MIDLE, ®s->MIISR))
2389 writeb(MIICR_MAUTO, ®s->MIICR);
2391 for (ii = 0; ii < W_MAX_TIMEOUT; ii++) {
2393 if (!BYTE_REG_BITS_IS_ON(MIISR_MIDLE, ®s->MIISR))
2400 * velocity_mii_read - read MII data
2401 * @regs: velocity registers
2402 * @index: MII register index
2403 * @data: buffer for received data
2405 * Perform a single read of an MII 16bit register. Returns zero
2406 * on success or -ETIMEDOUT if the PHY did not respond.
2409 static int velocity_mii_read(struct mac_regs __iomem *regs, u8 index, u16 *data)
2414 * Disable MIICR_MAUTO, so that mii addr can be set normally
2416 safe_disable_mii_autopoll(regs);
2418 writeb(index, ®s->MIIADR);
2420 BYTE_REG_BITS_ON(MIICR_RCMD, ®s->MIICR);
2422 for (ww = 0; ww < W_MAX_TIMEOUT; ww++) {
2423 if (!(readb(®s->MIICR) & MIICR_RCMD))
2427 *data = readw(®s->MIIDATA);
2429 enable_mii_autopoll(regs);
2430 if (ww == W_MAX_TIMEOUT)
2436 * velocity_mii_write - write MII data
2437 * @regs: velocity registers
2438 * @index: MII register index
2439 * @data: 16bit data for the MII register
2441 * Perform a single write to an MII 16bit register. Returns zero
2442 * on success or -ETIMEDOUT if the PHY did not respond.
2445 static int velocity_mii_write(struct mac_regs __iomem *regs, u8 mii_addr, u16 data)
2450 * Disable MIICR_MAUTO, so that mii addr can be set normally
2452 safe_disable_mii_autopoll(regs);
2454 /* MII reg offset */
2455 writeb(mii_addr, ®s->MIIADR);
2457 writew(data, ®s->MIIDATA);
2459 /* turn on MIICR_WCMD */
2460 BYTE_REG_BITS_ON(MIICR_WCMD, ®s->MIICR);
2462 /* W_MAX_TIMEOUT is the timeout period */
2463 for (ww = 0; ww < W_MAX_TIMEOUT; ww++) {
2465 if (!(readb(®s->MIICR) & MIICR_WCMD))
2468 enable_mii_autopoll(regs);
2470 if (ww == W_MAX_TIMEOUT)
2476 * velocity_get_opt_media_mode - get media selection
2477 * @vptr: velocity adapter
2479 * Get the media mode stored in EEPROM or module options and load
2480 * mii_status accordingly. The requested link state information
2484 static u32 velocity_get_opt_media_mode(struct velocity_info *vptr)
2488 switch (vptr->options.spd_dpx) {
2490 status = VELOCITY_AUTONEG_ENABLE;
2492 case SPD_DPX_100_FULL:
2493 status = VELOCITY_SPEED_100 | VELOCITY_DUPLEX_FULL;
2495 case SPD_DPX_10_FULL:
2496 status = VELOCITY_SPEED_10 | VELOCITY_DUPLEX_FULL;
2498 case SPD_DPX_100_HALF:
2499 status = VELOCITY_SPEED_100;
2501 case SPD_DPX_10_HALF:
2502 status = VELOCITY_SPEED_10;
2505 vptr->mii_status = status;
2510 * mii_set_auto_on - autonegotiate on
2513 * Enable autonegotation on this interface
2516 static void mii_set_auto_on(struct velocity_info *vptr)
2518 if (MII_REG_BITS_IS_ON(BMCR_AUTO, MII_REG_BMCR, vptr->mac_regs))
2519 MII_REG_BITS_ON(BMCR_REAUTO, MII_REG_BMCR, vptr->mac_regs);
2521 MII_REG_BITS_ON(BMCR_AUTO, MII_REG_BMCR, vptr->mac_regs);
2526 static void mii_set_auto_off(struct velocity_info * vptr)
2528 MII_REG_BITS_OFF(BMCR_AUTO, MII_REG_BMCR, vptr->mac_regs);
2533 * set_mii_flow_control - flow control setup
2534 * @vptr: velocity interface
2536 * Set up the flow control on this interface according to
2537 * the supplied user/eeprom options.
2540 static void set_mii_flow_control(struct velocity_info *vptr)
2542 /*Enable or Disable PAUSE in ANAR */
2543 switch (vptr->options.flow_cntl) {
2545 MII_REG_BITS_OFF(ANAR_PAUSE, MII_REG_ANAR, vptr->mac_regs);
2546 MII_REG_BITS_ON(ANAR_ASMDIR, MII_REG_ANAR, vptr->mac_regs);
2550 MII_REG_BITS_ON(ANAR_PAUSE, MII_REG_ANAR, vptr->mac_regs);
2551 MII_REG_BITS_ON(ANAR_ASMDIR, MII_REG_ANAR, vptr->mac_regs);
2554 case FLOW_CNTL_TX_RX:
2555 MII_REG_BITS_ON(ANAR_PAUSE, MII_REG_ANAR, vptr->mac_regs);
2556 MII_REG_BITS_ON(ANAR_ASMDIR, MII_REG_ANAR, vptr->mac_regs);
2559 case FLOW_CNTL_DISABLE:
2560 MII_REG_BITS_OFF(ANAR_PAUSE, MII_REG_ANAR, vptr->mac_regs);
2561 MII_REG_BITS_OFF(ANAR_ASMDIR, MII_REG_ANAR, vptr->mac_regs);
2569 * velocity_set_media_mode - set media mode
2570 * @mii_status: old MII link state
2572 * Check the media link state and configure the flow control
2573 * PHY and also velocity hardware setup accordingly. In particular
2574 * we need to set up CD polling and frame bursting.
2577 static int velocity_set_media_mode(struct velocity_info *vptr, u32 mii_status)
2580 struct mac_regs __iomem * regs = vptr->mac_regs;
2582 vptr->mii_status = mii_check_media_mode(vptr->mac_regs);
2583 curr_status = vptr->mii_status & (~VELOCITY_LINK_FAIL);
2585 /* Set mii link status */
2586 set_mii_flow_control(vptr);
2589 Check if new status is consisent with current status
2590 if (((mii_status & curr_status) & VELOCITY_AUTONEG_ENABLE)
2591 || (mii_status==curr_status)) {
2592 vptr->mii_status=mii_check_media_mode(vptr->mac_regs);
2593 vptr->mii_status=check_connection_type(vptr->mac_regs);
2594 VELOCITY_PRT(MSG_LEVEL_INFO, "Velocity link no change\n");
2599 if (PHYID_GET_PHY_ID(vptr->phy_id) == PHYID_CICADA_CS8201) {
2600 MII_REG_BITS_ON(AUXCR_MDPPS, MII_REG_AUXCR, vptr->mac_regs);
2604 * If connection type is AUTO
2606 if (mii_status & VELOCITY_AUTONEG_ENABLE) {
2607 VELOCITY_PRT(MSG_LEVEL_INFO, "Velocity is AUTO mode\n");
2608 /* clear force MAC mode bit */
2609 BYTE_REG_BITS_OFF(CHIPGCR_FCMODE, ®s->CHIPGCR);
2610 /* set duplex mode of MAC according to duplex mode of MII */
2611 MII_REG_BITS_ON(ANAR_TXFD | ANAR_TX | ANAR_10FD | ANAR_10, MII_REG_ANAR, vptr->mac_regs);
2612 MII_REG_BITS_ON(G1000CR_1000FD | G1000CR_1000, MII_REG_G1000CR, vptr->mac_regs);
2613 MII_REG_BITS_ON(BMCR_SPEED1G, MII_REG_BMCR, vptr->mac_regs);
2615 /* enable AUTO-NEGO mode */
2616 mii_set_auto_on(vptr);
2622 * 1. if it's 3119, disable frame bursting in halfduplex mode
2623 * and enable it in fullduplex mode
2624 * 2. set correct MII/GMII and half/full duplex mode in CHIPGCR
2625 * 3. only enable CD heart beat counter in 10HD mode
2628 /* set force MAC mode bit */
2629 BYTE_REG_BITS_ON(CHIPGCR_FCMODE, ®s->CHIPGCR);
2631 CHIPGCR = readb(®s->CHIPGCR);
2632 CHIPGCR &= ~CHIPGCR_FCGMII;
2634 if (mii_status & VELOCITY_DUPLEX_FULL) {
2635 CHIPGCR |= CHIPGCR_FCFDX;
2636 writeb(CHIPGCR, ®s->CHIPGCR);
2637 VELOCITY_PRT(MSG_LEVEL_INFO, "set Velocity to forced full mode\n");
2638 if (vptr->rev_id < REV_ID_VT3216_A0)
2639 BYTE_REG_BITS_OFF(TCR_TB2BDIS, ®s->TCR);
2641 CHIPGCR &= ~CHIPGCR_FCFDX;
2642 VELOCITY_PRT(MSG_LEVEL_INFO, "set Velocity to forced half mode\n");
2643 writeb(CHIPGCR, ®s->CHIPGCR);
2644 if (vptr->rev_id < REV_ID_VT3216_A0)
2645 BYTE_REG_BITS_ON(TCR_TB2BDIS, ®s->TCR);
2648 MII_REG_BITS_OFF(G1000CR_1000FD | G1000CR_1000, MII_REG_G1000CR, vptr->mac_regs);
2650 if (!(mii_status & VELOCITY_DUPLEX_FULL) && (mii_status & VELOCITY_SPEED_10)) {
2651 BYTE_REG_BITS_OFF(TESTCFG_HBDIS, ®s->TESTCFG);
2653 BYTE_REG_BITS_ON(TESTCFG_HBDIS, ®s->TESTCFG);
2655 /* MII_REG_BITS_OFF(BMCR_SPEED1G, MII_REG_BMCR, vptr->mac_regs); */
2656 velocity_mii_read(vptr->mac_regs, MII_REG_ANAR, &ANAR);
2657 ANAR &= (~(ANAR_TXFD | ANAR_TX | ANAR_10FD | ANAR_10));
2658 if (mii_status & VELOCITY_SPEED_100) {
2659 if (mii_status & VELOCITY_DUPLEX_FULL)
2664 if (mii_status & VELOCITY_DUPLEX_FULL)
2669 velocity_mii_write(vptr->mac_regs, MII_REG_ANAR, ANAR);
2670 /* enable AUTO-NEGO mode */
2671 mii_set_auto_on(vptr);
2672 /* MII_REG_BITS_ON(BMCR_AUTO, MII_REG_BMCR, vptr->mac_regs); */
2674 /* vptr->mii_status=mii_check_media_mode(vptr->mac_regs); */
2675 /* vptr->mii_status=check_connection_type(vptr->mac_regs); */
2676 return VELOCITY_LINK_CHANGE;
2680 * mii_check_media_mode - check media state
2681 * @regs: velocity registers
2683 * Check the current MII status and determine the link status
2687 static u32 mii_check_media_mode(struct mac_regs __iomem * regs)
2692 if (!MII_REG_BITS_IS_ON(BMSR_LNK, MII_REG_BMSR, regs))
2693 status |= VELOCITY_LINK_FAIL;
2695 if (MII_REG_BITS_IS_ON(G1000CR_1000FD, MII_REG_G1000CR, regs))
2696 status |= VELOCITY_SPEED_1000 | VELOCITY_DUPLEX_FULL;
2697 else if (MII_REG_BITS_IS_ON(G1000CR_1000, MII_REG_G1000CR, regs))
2698 status |= (VELOCITY_SPEED_1000);
2700 velocity_mii_read(regs, MII_REG_ANAR, &ANAR);
2701 if (ANAR & ANAR_TXFD)
2702 status |= (VELOCITY_SPEED_100 | VELOCITY_DUPLEX_FULL);
2703 else if (ANAR & ANAR_TX)
2704 status |= VELOCITY_SPEED_100;
2705 else if (ANAR & ANAR_10FD)
2706 status |= (VELOCITY_SPEED_10 | VELOCITY_DUPLEX_FULL);
2708 status |= (VELOCITY_SPEED_10);
2711 if (MII_REG_BITS_IS_ON(BMCR_AUTO, MII_REG_BMCR, regs)) {
2712 velocity_mii_read(regs, MII_REG_ANAR, &ANAR);
2713 if ((ANAR & (ANAR_TXFD | ANAR_TX | ANAR_10FD | ANAR_10))
2714 == (ANAR_TXFD | ANAR_TX | ANAR_10FD | ANAR_10)) {
2715 if (MII_REG_BITS_IS_ON(G1000CR_1000 | G1000CR_1000FD, MII_REG_G1000CR, regs))
2716 status |= VELOCITY_AUTONEG_ENABLE;
2723 static u32 check_connection_type(struct mac_regs __iomem * regs)
2728 PHYSR0 = readb(®s->PHYSR0);
2731 if (!(PHYSR0 & PHYSR0_LINKGD))
2732 status|=VELOCITY_LINK_FAIL;
2735 if (PHYSR0 & PHYSR0_FDPX)
2736 status |= VELOCITY_DUPLEX_FULL;
2738 if (PHYSR0 & PHYSR0_SPDG)
2739 status |= VELOCITY_SPEED_1000;
2740 else if (PHYSR0 & PHYSR0_SPD10)
2741 status |= VELOCITY_SPEED_10;
2743 status |= VELOCITY_SPEED_100;
2745 if (MII_REG_BITS_IS_ON(BMCR_AUTO, MII_REG_BMCR, regs)) {
2746 velocity_mii_read(regs, MII_REG_ANAR, &ANAR);
2747 if ((ANAR & (ANAR_TXFD | ANAR_TX | ANAR_10FD | ANAR_10))
2748 == (ANAR_TXFD | ANAR_TX | ANAR_10FD | ANAR_10)) {
2749 if (MII_REG_BITS_IS_ON(G1000CR_1000 | G1000CR_1000FD, MII_REG_G1000CR, regs))
2750 status |= VELOCITY_AUTONEG_ENABLE;
2758 * enable_flow_control_ability - flow control
2759 * @vptr: veloity to configure
2761 * Set up flow control according to the flow control options
2762 * determined by the eeprom/configuration.
2765 static void enable_flow_control_ability(struct velocity_info *vptr)
2768 struct mac_regs __iomem * regs = vptr->mac_regs;
2770 switch (vptr->options.flow_cntl) {
2772 case FLOW_CNTL_DEFAULT:
2773 if (BYTE_REG_BITS_IS_ON(PHYSR0_RXFLC, ®s->PHYSR0))
2774 writel(CR0_FDXRFCEN, ®s->CR0Set);
2776 writel(CR0_FDXRFCEN, ®s->CR0Clr);
2778 if (BYTE_REG_BITS_IS_ON(PHYSR0_TXFLC, ®s->PHYSR0))
2779 writel(CR0_FDXTFCEN, ®s->CR0Set);
2781 writel(CR0_FDXTFCEN, ®s->CR0Clr);
2785 writel(CR0_FDXTFCEN, ®s->CR0Set);
2786 writel(CR0_FDXRFCEN, ®s->CR0Clr);
2790 writel(CR0_FDXRFCEN, ®s->CR0Set);
2791 writel(CR0_FDXTFCEN, ®s->CR0Clr);
2794 case FLOW_CNTL_TX_RX:
2795 writel(CR0_FDXTFCEN, ®s->CR0Set);
2796 writel(CR0_FDXRFCEN, ®s->CR0Set);
2799 case FLOW_CNTL_DISABLE:
2800 writel(CR0_FDXRFCEN, ®s->CR0Clr);
2801 writel(CR0_FDXTFCEN, ®s->CR0Clr);
2812 * velocity_ethtool_up - pre hook for ethtool
2813 * @dev: network device
2815 * Called before an ethtool operation. We need to make sure the
2816 * chip is out of D3 state before we poke at it.
2819 static int velocity_ethtool_up(struct net_device *dev)
2821 struct velocity_info *vptr = netdev_priv(dev);
2822 if (!netif_running(dev))
2823 pci_set_power_state(vptr->pdev, PCI_D0);
2828 * velocity_ethtool_down - post hook for ethtool
2829 * @dev: network device
2831 * Called after an ethtool operation. Restore the chip back to D3
2832 * state if it isn't running.
2835 static void velocity_ethtool_down(struct net_device *dev)
2837 struct velocity_info *vptr = netdev_priv(dev);
2838 if (!netif_running(dev))
2839 pci_set_power_state(vptr->pdev, PCI_D3hot);
2842 static int velocity_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
2844 struct velocity_info *vptr = netdev_priv(dev);
2845 struct mac_regs __iomem * regs = vptr->mac_regs;
2847 status = check_connection_type(vptr->mac_regs);
2849 cmd->supported = SUPPORTED_TP |
2851 SUPPORTED_10baseT_Half |
2852 SUPPORTED_10baseT_Full |
2853 SUPPORTED_100baseT_Half |
2854 SUPPORTED_100baseT_Full |
2855 SUPPORTED_1000baseT_Half |
2856 SUPPORTED_1000baseT_Full;
2857 if (status & VELOCITY_SPEED_1000)
2858 cmd->speed = SPEED_1000;
2859 else if (status & VELOCITY_SPEED_100)
2860 cmd->speed = SPEED_100;
2862 cmd->speed = SPEED_10;
2863 cmd->autoneg = (status & VELOCITY_AUTONEG_ENABLE) ? AUTONEG_ENABLE : AUTONEG_DISABLE;
2864 cmd->port = PORT_TP;
2865 cmd->transceiver = XCVR_INTERNAL;
2866 cmd->phy_address = readb(®s->MIIADR) & 0x1F;
2868 if (status & VELOCITY_DUPLEX_FULL)
2869 cmd->duplex = DUPLEX_FULL;
2871 cmd->duplex = DUPLEX_HALF;
2876 static int velocity_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
2878 struct velocity_info *vptr = netdev_priv(dev);
2883 curr_status = check_connection_type(vptr->mac_regs);
2884 curr_status &= (~VELOCITY_LINK_FAIL);
2886 new_status |= ((cmd->autoneg) ? VELOCITY_AUTONEG_ENABLE : 0);
2887 new_status |= ((cmd->speed == SPEED_100) ? VELOCITY_SPEED_100 : 0);
2888 new_status |= ((cmd->speed == SPEED_10) ? VELOCITY_SPEED_10 : 0);
2889 new_status |= ((cmd->duplex == DUPLEX_FULL) ? VELOCITY_DUPLEX_FULL : 0);
2891 if ((new_status & VELOCITY_AUTONEG_ENABLE) && (new_status != (curr_status | VELOCITY_AUTONEG_ENABLE)))
2894 velocity_set_media_mode(vptr, new_status);
2899 static u32 velocity_get_link(struct net_device *dev)
2901 struct velocity_info *vptr = netdev_priv(dev);
2902 struct mac_regs __iomem * regs = vptr->mac_regs;
2903 return BYTE_REG_BITS_IS_ON(PHYSR0_LINKGD, ®s->PHYSR0) ? 1 : 0;
2906 static void velocity_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
2908 struct velocity_info *vptr = netdev_priv(dev);
2909 strcpy(info->driver, VELOCITY_NAME);
2910 strcpy(info->version, VELOCITY_VERSION);
2911 strcpy(info->bus_info, pci_name(vptr->pdev));
2914 static void velocity_ethtool_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
2916 struct velocity_info *vptr = netdev_priv(dev);
2917 wol->supported = WAKE_PHY | WAKE_MAGIC | WAKE_UCAST | WAKE_ARP;
2918 wol->wolopts |= WAKE_MAGIC;
2920 if (vptr->wol_opts & VELOCITY_WOL_PHY)
2921 wol.wolopts|=WAKE_PHY;
2923 if (vptr->wol_opts & VELOCITY_WOL_UCAST)
2924 wol->wolopts |= WAKE_UCAST;
2925 if (vptr->wol_opts & VELOCITY_WOL_ARP)
2926 wol->wolopts |= WAKE_ARP;
2927 memcpy(&wol->sopass, vptr->wol_passwd, 6);
2930 static int velocity_ethtool_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
2932 struct velocity_info *vptr = netdev_priv(dev);
2934 if (!(wol->wolopts & (WAKE_PHY | WAKE_MAGIC | WAKE_UCAST | WAKE_ARP)))
2936 vptr->wol_opts = VELOCITY_WOL_MAGIC;
2939 if (wol.wolopts & WAKE_PHY) {
2940 vptr->wol_opts|=VELOCITY_WOL_PHY;
2941 vptr->flags |=VELOCITY_FLAGS_WOL_ENABLED;
2945 if (wol->wolopts & WAKE_MAGIC) {
2946 vptr->wol_opts |= VELOCITY_WOL_MAGIC;
2947 vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
2949 if (wol->wolopts & WAKE_UCAST) {
2950 vptr->wol_opts |= VELOCITY_WOL_UCAST;
2951 vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
2953 if (wol->wolopts & WAKE_ARP) {
2954 vptr->wol_opts |= VELOCITY_WOL_ARP;
2955 vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
2957 memcpy(vptr->wol_passwd, wol->sopass, 6);
2961 static u32 velocity_get_msglevel(struct net_device *dev)
2966 static void velocity_set_msglevel(struct net_device *dev, u32 value)
2971 static const struct ethtool_ops velocity_ethtool_ops = {
2972 .get_settings = velocity_get_settings,
2973 .set_settings = velocity_set_settings,
2974 .get_drvinfo = velocity_get_drvinfo,
2975 .get_wol = velocity_ethtool_get_wol,
2976 .set_wol = velocity_ethtool_set_wol,
2977 .get_msglevel = velocity_get_msglevel,
2978 .set_msglevel = velocity_set_msglevel,
2979 .get_link = velocity_get_link,
2980 .begin = velocity_ethtool_up,
2981 .complete = velocity_ethtool_down
2985 * velocity_mii_ioctl - MII ioctl handler
2986 * @dev: network device
2987 * @ifr: the ifreq block for the ioctl
2990 * Process MII requests made via ioctl from the network layer. These
2991 * are used by tools like kudzu to interrogate the link state of the
2995 static int velocity_mii_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
2997 struct velocity_info *vptr = netdev_priv(dev);
2998 struct mac_regs __iomem * regs = vptr->mac_regs;
2999 unsigned long flags;
3000 struct mii_ioctl_data *miidata = if_mii(ifr);
3005 miidata->phy_id = readb(®s->MIIADR) & 0x1f;
3008 if (!capable(CAP_NET_ADMIN))
3010 if(velocity_mii_read(vptr->mac_regs, miidata->reg_num & 0x1f, &(miidata->val_out)) < 0)
3014 if (!capable(CAP_NET_ADMIN))
3016 spin_lock_irqsave(&vptr->lock, flags);
3017 err = velocity_mii_write(vptr->mac_regs, miidata->reg_num & 0x1f, miidata->val_in);
3018 spin_unlock_irqrestore(&vptr->lock, flags);
3019 check_connection_type(vptr->mac_regs);
3032 * velocity_save_context - save registers
3034 * @context: buffer for stored context
3036 * Retrieve the current configuration from the velocity hardware
3037 * and stash it in the context structure, for use by the context
3038 * restore functions. This allows us to save things we need across
3042 static void velocity_save_context(struct velocity_info *vptr, struct velocity_context * context)
3044 struct mac_regs __iomem * regs = vptr->mac_regs;
3046 u8 __iomem *ptr = (u8 __iomem *)regs;
3048 for (i = MAC_REG_PAR; i < MAC_REG_CR0_CLR; i += 4)
3049 *((u32 *) (context->mac_reg + i)) = readl(ptr + i);
3051 for (i = MAC_REG_MAR; i < MAC_REG_TDCSR_CLR; i += 4)
3052 *((u32 *) (context->mac_reg + i)) = readl(ptr + i);
3054 for (i = MAC_REG_RDBASE_LO; i < MAC_REG_FIFO_TEST0; i += 4)
3055 *((u32 *) (context->mac_reg + i)) = readl(ptr + i);
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.
3068 static void velocity_restore_context(struct velocity_info *vptr, struct velocity_context *context)
3070 struct mac_regs __iomem * regs = vptr->mac_regs;
3072 u8 __iomem *ptr = (u8 __iomem *)regs;
3074 for (i = MAC_REG_PAR; i < MAC_REG_CR0_SET; i += 4) {
3075 writel(*((u32 *) (context->mac_reg + i)), ptr + i);
3079 for (i = MAC_REG_CR1_SET; i < MAC_REG_CR0_CLR; i++) {
3081 writeb(~(*((u8 *) (context->mac_reg + i))), ptr + i + 4);
3083 writeb(*((u8 *) (context->mac_reg + i)), ptr + i);
3086 for (i = MAC_REG_MAR; i < MAC_REG_IMR; i += 4) {
3087 writel(*((u32 *) (context->mac_reg + i)), ptr + i);
3090 for (i = MAC_REG_RDBASE_LO; i < MAC_REG_FIFO_TEST0; i += 4) {
3091 writel(*((u32 *) (context->mac_reg + i)), ptr + i);
3094 for (i = MAC_REG_TDCSR_SET; i <= MAC_REG_RDCSR_SET; i++) {
3095 writeb(*((u8 *) (context->mac_reg + i)), ptr + i);
3101 * wol_calc_crc - WOL CRC
3102 * @pattern: data pattern
3103 * @mask_pattern: mask
3105 * Compute the wake on lan crc hashes for the packet header
3106 * we are interested in.
3109 static u16 wol_calc_crc(int size, u8 * pattern, u8 *mask_pattern)
3115 for (i = 0; i < size; i++) {
3116 mask = mask_pattern[i];
3118 /* Skip this loop if the mask equals to zero */
3122 for (j = 0; j < 8; j++) {
3123 if ((mask & 0x01) == 0) {
3128 crc = crc_ccitt(crc, &(pattern[i * 8 + j]), 1);
3131 /* Finally, invert the result once to get the correct data */
3133 return bitrev32(crc) >> 16;
3137 * velocity_set_wol - set up for wake on lan
3138 * @vptr: velocity to set WOL status on
3140 * Set a card up for wake on lan either by unicast or by
3143 * FIXME: check static buffer is safe here
3146 static int velocity_set_wol(struct velocity_info *vptr)
3148 struct mac_regs __iomem * regs = vptr->mac_regs;
3152 static u32 mask_pattern[2][4] = {
3153 {0x00203000, 0x000003C0, 0x00000000, 0x0000000}, /* ARP */
3154 {0xfffff000, 0xffffffff, 0xffffffff, 0x000ffff} /* Magic Packet */
3157 writew(0xFFFF, ®s->WOLCRClr);
3158 writeb(WOLCFG_SAB | WOLCFG_SAM, ®s->WOLCFGSet);
3159 writew(WOLCR_MAGIC_EN, ®s->WOLCRSet);
3162 if (vptr->wol_opts & VELOCITY_WOL_PHY)
3163 writew((WOLCR_LINKON_EN|WOLCR_LINKOFF_EN), ®s->WOLCRSet);
3166 if (vptr->wol_opts & VELOCITY_WOL_UCAST) {
3167 writew(WOLCR_UNICAST_EN, ®s->WOLCRSet);
3170 if (vptr->wol_opts & VELOCITY_WOL_ARP) {
3171 struct arp_packet *arp = (struct arp_packet *) buf;
3173 memset(buf, 0, sizeof(struct arp_packet) + 7);
3175 for (i = 0; i < 4; i++)
3176 writel(mask_pattern[0][i], ®s->ByteMask[0][i]);
3178 arp->type = htons(ETH_P_ARP);
3179 arp->ar_op = htons(1);
3181 memcpy(arp->ar_tip, vptr->ip_addr, 4);
3183 crc = wol_calc_crc((sizeof(struct arp_packet) + 7) / 8, buf,
3184 (u8 *) & mask_pattern[0][0]);
3186 writew(crc, ®s->PatternCRC[0]);
3187 writew(WOLCR_ARP_EN, ®s->WOLCRSet);
3190 BYTE_REG_BITS_ON(PWCFG_WOLTYPE, ®s->PWCFGSet);
3191 BYTE_REG_BITS_ON(PWCFG_LEGACY_WOLEN, ®s->PWCFGSet);
3193 writew(0x0FFF, ®s->WOLSRClr);
3195 if (vptr->mii_status & VELOCITY_AUTONEG_ENABLE) {
3196 if (PHYID_GET_PHY_ID(vptr->phy_id) == PHYID_CICADA_CS8201)
3197 MII_REG_BITS_ON(AUXCR_MDPPS, MII_REG_AUXCR, vptr->mac_regs);
3199 MII_REG_BITS_OFF(G1000CR_1000FD | G1000CR_1000, MII_REG_G1000CR, vptr->mac_regs);
3202 if (vptr->mii_status & VELOCITY_SPEED_1000)
3203 MII_REG_BITS_ON(BMCR_REAUTO, MII_REG_BMCR, vptr->mac_regs);
3205 BYTE_REG_BITS_ON(CHIPGCR_FCMODE, ®s->CHIPGCR);
3209 GCR = readb(®s->CHIPGCR);
3210 GCR = (GCR & ~CHIPGCR_FCGMII) | CHIPGCR_FCFDX;
3211 writeb(GCR, ®s->CHIPGCR);
3214 BYTE_REG_BITS_OFF(ISR_PWEI, ®s->ISR);
3215 /* Turn on SWPTAG just before entering power mode */
3216 BYTE_REG_BITS_ON(STICKHW_SWPTAG, ®s->STICKHW);
3217 /* Go to bed ..... */
3218 BYTE_REG_BITS_ON((STICKHW_DS1 | STICKHW_DS0), ®s->STICKHW);
3223 static int velocity_suspend(struct pci_dev *pdev, pm_message_t state)
3225 struct net_device *dev = pci_get_drvdata(pdev);
3226 struct velocity_info *vptr = netdev_priv(dev);
3227 unsigned long flags;
3229 if(!netif_running(vptr->dev))
3232 netif_device_detach(vptr->dev);
3234 spin_lock_irqsave(&vptr->lock, flags);
3235 pci_save_state(pdev);
3237 if (vptr->flags & VELOCITY_FLAGS_WOL_ENABLED) {
3238 velocity_get_ip(vptr);
3239 velocity_save_context(vptr, &vptr->context);
3240 velocity_shutdown(vptr);
3241 velocity_set_wol(vptr);
3242 pci_enable_wake(pdev, 3, 1);
3243 pci_set_power_state(pdev, PCI_D3hot);
3245 velocity_save_context(vptr, &vptr->context);
3246 velocity_shutdown(vptr);
3247 pci_disable_device(pdev);
3248 pci_set_power_state(pdev, pci_choose_state(pdev, state));
3251 pci_set_power_state(pdev, pci_choose_state(pdev, state));
3253 spin_unlock_irqrestore(&vptr->lock, flags);
3257 static int velocity_resume(struct pci_dev *pdev)
3259 struct net_device *dev = pci_get_drvdata(pdev);
3260 struct velocity_info *vptr = netdev_priv(dev);
3261 unsigned long flags;
3264 if(!netif_running(vptr->dev))
3267 pci_set_power_state(pdev, PCI_D0);
3268 pci_enable_wake(pdev, 0, 0);
3269 pci_restore_state(pdev);
3271 mac_wol_reset(vptr->mac_regs);
3273 spin_lock_irqsave(&vptr->lock, flags);
3274 velocity_restore_context(vptr, &vptr->context);
3275 velocity_init_registers(vptr, VELOCITY_INIT_WOL);
3276 mac_disable_int(vptr->mac_regs);
3278 velocity_tx_srv(vptr, 0);
3280 for (i = 0; i < vptr->num_txq; i++) {
3281 if (vptr->td_used[i]) {
3282 mac_tx_queue_wake(vptr->mac_regs, i);
3286 mac_enable_int(vptr->mac_regs);
3287 spin_unlock_irqrestore(&vptr->lock, flags);
3288 netif_device_attach(vptr->dev);
3295 static int velocity_netdev_event(struct notifier_block *nb, unsigned long notification, void *ptr)
3297 struct in_ifaddr *ifa = (struct in_ifaddr *) ptr;
3300 struct net_device *dev = ifa->ifa_dev->dev;
3301 struct velocity_info *vptr;
3302 unsigned long flags;
3304 spin_lock_irqsave(&velocity_dev_list_lock, flags);
3305 list_for_each_entry(vptr, &velocity_dev_list, list) {
3306 if (vptr->dev == dev) {
3307 velocity_get_ip(vptr);
3311 spin_unlock_irqrestore(&velocity_dev_list_lock, flags);