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
15 * The changes are (c) Copyright 2004, Red Hat Inc. <alan@lxorguk.ukuu.org.uk>
16 * Additional fixes and clean up: Francois Romieu
18 * This source has not been verified for use in safety critical systems.
20 * Please direct queries about the revamped driver to the linux-kernel
25 * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
26 * All rights reserved.
28 * This software may be redistributed and/or modified under
29 * the terms of the GNU General Public License as published by the Free
30 * Software Foundation; either version 2 of the License, or
33 * This program is distributed in the hope that it will be useful, but
34 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
35 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
38 * Author: Chuang Liang-Shing, AJ Jiang
42 * MODULE_LICENSE("GPL");
47 #include <linux/module.h>
48 #include <linux/types.h>
49 #include <linux/init.h>
51 #include <linux/errno.h>
52 #include <linux/ioport.h>
53 #include <linux/pci.h>
54 #include <linux/kernel.h>
55 #include <linux/netdevice.h>
56 #include <linux/etherdevice.h>
57 #include <linux/skbuff.h>
58 #include <linux/delay.h>
59 #include <linux/timer.h>
60 #include <linux/slab.h>
61 #include <linux/interrupt.h>
62 #include <linux/string.h>
63 #include <linux/wait.h>
66 #include <asm/uaccess.h>
67 #include <linux/proc_fs.h>
68 #include <linux/inetdevice.h>
69 #include <linux/reboot.h>
70 #include <linux/ethtool.h>
71 #include <linux/mii.h>
73 #include <linux/if_arp.h>
74 #include <linux/if_vlan.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 * mac_get_cam_mask - Read a CAM mask
89 * @regs: register block for this velocity
90 * @mask: buffer to store mask
92 * Fetch the mask bits of the selected CAM and store them into the
93 * provided mask buffer.
96 static void mac_get_cam_mask(struct mac_regs __iomem
* regs
, u8
* mask
)
100 /* Select CAM mask */
101 BYTE_REG_BITS_SET(CAMCR_PS_CAM_MASK
, CAMCR_PS1
| CAMCR_PS0
, ®s
->CAMCR
);
103 writeb(0, ®s
->CAMADDR
);
106 for (i
= 0; i
< 8; i
++)
107 *mask
++ = readb(&(regs
->MARCAM
[i
]));
110 writeb(0, ®s
->CAMADDR
);
113 BYTE_REG_BITS_SET(CAMCR_PS_MAR
, CAMCR_PS1
| CAMCR_PS0
, ®s
->CAMCR
);
119 * mac_set_cam_mask - Set a CAM mask
120 * @regs: register block for this velocity
121 * @mask: CAM mask to load
123 * Store a new mask into a CAM
126 static void mac_set_cam_mask(struct mac_regs __iomem
* regs
, u8
* mask
)
129 /* Select CAM mask */
130 BYTE_REG_BITS_SET(CAMCR_PS_CAM_MASK
, CAMCR_PS1
| CAMCR_PS0
, ®s
->CAMCR
);
132 writeb(CAMADDR_CAMEN
, ®s
->CAMADDR
);
134 for (i
= 0; i
< 8; i
++) {
135 writeb(*mask
++, &(regs
->MARCAM
[i
]));
138 writeb(0, ®s
->CAMADDR
);
141 BYTE_REG_BITS_SET(CAMCR_PS_MAR
, CAMCR_PS1
| CAMCR_PS0
, ®s
->CAMCR
);
144 static void mac_set_vlan_cam_mask(struct mac_regs __iomem
* regs
, u8
* mask
)
147 /* Select CAM mask */
148 BYTE_REG_BITS_SET(CAMCR_PS_CAM_MASK
, CAMCR_PS1
| CAMCR_PS0
, ®s
->CAMCR
);
150 writeb(CAMADDR_CAMEN
| CAMADDR_VCAMSL
, ®s
->CAMADDR
);
152 for (i
= 0; i
< 8; i
++) {
153 writeb(*mask
++, &(regs
->MARCAM
[i
]));
156 writeb(0, ®s
->CAMADDR
);
159 BYTE_REG_BITS_SET(CAMCR_PS_MAR
, CAMCR_PS1
| CAMCR_PS0
, ®s
->CAMCR
);
163 * mac_set_cam - set CAM data
164 * @regs: register block of this velocity
166 * @addr: 2 or 6 bytes of CAM data
168 * Load an address or vlan tag into a CAM
171 static void mac_set_cam(struct mac_regs __iomem
* regs
, int idx
, const u8
*addr
)
175 /* Select CAM mask */
176 BYTE_REG_BITS_SET(CAMCR_PS_CAM_DATA
, CAMCR_PS1
| CAMCR_PS0
, ®s
->CAMCR
);
180 writeb(CAMADDR_CAMEN
| idx
, ®s
->CAMADDR
);
182 for (i
= 0; i
< 6; i
++) {
183 writeb(*addr
++, &(regs
->MARCAM
[i
]));
185 BYTE_REG_BITS_ON(CAMCR_CAMWR
, ®s
->CAMCR
);
189 writeb(0, ®s
->CAMADDR
);
192 BYTE_REG_BITS_SET(CAMCR_PS_MAR
, CAMCR_PS1
| CAMCR_PS0
, ®s
->CAMCR
);
195 static void mac_set_vlan_cam(struct mac_regs __iomem
* regs
, int idx
,
199 /* Select CAM mask */
200 BYTE_REG_BITS_SET(CAMCR_PS_CAM_DATA
, CAMCR_PS1
| CAMCR_PS0
, ®s
->CAMCR
);
204 writeb(CAMADDR_CAMEN
| CAMADDR_VCAMSL
| idx
, ®s
->CAMADDR
);
205 writew(*((u16
*) addr
), ®s
->MARCAM
[0]);
207 BYTE_REG_BITS_ON(CAMCR_CAMWR
, ®s
->CAMCR
);
211 writeb(0, ®s
->CAMADDR
);
214 BYTE_REG_BITS_SET(CAMCR_PS_MAR
, CAMCR_PS1
| CAMCR_PS0
, ®s
->CAMCR
);
219 * mac_wol_reset - reset WOL after exiting low power
220 * @regs: register block of this velocity
222 * Called after we drop out of wake on lan mode in order to
223 * reset the Wake on lan features. This function doesn't restore
224 * the rest of the logic from the result of sleep/wakeup
227 static void mac_wol_reset(struct mac_regs __iomem
* regs
)
230 /* Turn off SWPTAG right after leaving power mode */
231 BYTE_REG_BITS_OFF(STICKHW_SWPTAG
, ®s
->STICKHW
);
232 /* clear sticky bits */
233 BYTE_REG_BITS_OFF((STICKHW_DS1
| STICKHW_DS0
), ®s
->STICKHW
);
235 BYTE_REG_BITS_OFF(CHIPGCR_FCGMII
, ®s
->CHIPGCR
);
236 BYTE_REG_BITS_OFF(CHIPGCR_FCMODE
, ®s
->CHIPGCR
);
237 /* disable force PME-enable */
238 writeb(WOLCFG_PMEOVR
, ®s
->WOLCFGClr
);
239 /* disable power-event config bit */
240 writew(0xFFFF, ®s
->WOLCRClr
);
241 /* clear power status */
242 writew(0xFFFF, ®s
->WOLSRClr
);
245 static int velocity_mii_ioctl(struct net_device
*dev
, struct ifreq
*ifr
, int cmd
);
246 static const struct ethtool_ops velocity_ethtool_ops
;
249 Define module options
252 MODULE_AUTHOR("VIA Networking Technologies, Inc.");
253 MODULE_LICENSE("GPL");
254 MODULE_DESCRIPTION("VIA Networking Velocity Family Gigabit Ethernet Adapter Driver");
256 #define VELOCITY_PARAM(N,D) \
257 static int N[MAX_UNITS]=OPTION_DEFAULT;\
258 module_param_array(N, int, NULL, 0); \
259 MODULE_PARM_DESC(N, D);
261 #define RX_DESC_MIN 64
262 #define RX_DESC_MAX 255
263 #define RX_DESC_DEF 64
264 VELOCITY_PARAM(RxDescriptors
, "Number of receive descriptors");
266 #define TX_DESC_MIN 16
267 #define TX_DESC_MAX 256
268 #define TX_DESC_DEF 64
269 VELOCITY_PARAM(TxDescriptors
, "Number of transmit descriptors");
271 #define RX_THRESH_MIN 0
272 #define RX_THRESH_MAX 3
273 #define RX_THRESH_DEF 0
274 /* rx_thresh[] is used for controlling the receive fifo threshold.
275 0: indicate the rxfifo threshold is 128 bytes.
276 1: indicate the rxfifo threshold is 512 bytes.
277 2: indicate the rxfifo threshold is 1024 bytes.
278 3: indicate the rxfifo threshold is store & forward.
280 VELOCITY_PARAM(rx_thresh
, "Receive fifo threshold");
282 #define DMA_LENGTH_MIN 0
283 #define DMA_LENGTH_MAX 7
284 #define DMA_LENGTH_DEF 0
286 /* DMA_length[] is used for controlling the DMA length
293 6: SF(flush till emply)
294 7: SF(flush till emply)
296 VELOCITY_PARAM(DMA_length
, "DMA length");
298 #define IP_ALIG_DEF 0
299 /* IP_byte_align[] is used for IP header DWORD byte aligned
300 0: indicate the IP header won't be DWORD byte aligned.(Default) .
301 1: indicate the IP header will be DWORD byte aligned.
302 In some enviroment, the IP header should be DWORD byte aligned,
303 or the packet will be droped when we receive it. (eg: IPVS)
305 VELOCITY_PARAM(IP_byte_align
, "Enable IP header dword aligned");
307 #define TX_CSUM_DEF 1
308 /* txcsum_offload[] is used for setting the checksum offload ability of NIC.
309 (We only support RX checksum offload now)
310 0: disable csum_offload[checksum offload
311 1: enable checksum offload. (Default)
313 VELOCITY_PARAM(txcsum_offload
, "Enable transmit packet checksum offload");
315 #define FLOW_CNTL_DEF 1
316 #define FLOW_CNTL_MIN 1
317 #define FLOW_CNTL_MAX 5
319 /* flow_control[] is used for setting the flow control ability of NIC.
320 1: hardware deafult - AUTO (default). Use Hardware default value in ANAR.
321 2: enable TX flow control.
322 3: enable RX flow control.
323 4: enable RX/TX flow control.
326 VELOCITY_PARAM(flow_control
, "Enable flow control ability");
328 #define MED_LNK_DEF 0
329 #define MED_LNK_MIN 0
330 #define MED_LNK_MAX 4
331 /* speed_duplex[] is used for setting the speed and duplex mode of NIC.
332 0: indicate autonegotiation for both speed and duplex mode
333 1: indicate 100Mbps half duplex mode
334 2: indicate 100Mbps full duplex mode
335 3: indicate 10Mbps half duplex mode
336 4: indicate 10Mbps full duplex mode
339 if EEPROM have been set to the force mode, this option is ignored
342 VELOCITY_PARAM(speed_duplex
, "Setting the speed and duplex mode");
344 #define VAL_PKT_LEN_DEF 0
345 /* ValPktLen[] is used for setting the checksum offload ability of NIC.
346 0: Receive frame with invalid layer 2 length (Default)
347 1: Drop frame with invalid layer 2 length
349 VELOCITY_PARAM(ValPktLen
, "Receiving or Drop invalid 802.3 frame");
351 #define WOL_OPT_DEF 0
352 #define WOL_OPT_MIN 0
353 #define WOL_OPT_MAX 7
354 /* wol_opts[] is used for controlling wake on lan behavior.
355 0: Wake up if recevied a magic packet. (Default)
356 1: Wake up if link status is on/off.
357 2: Wake up if recevied an arp packet.
358 4: Wake up if recevied any unicast packet.
359 Those value can be sumed up to support more than one option.
361 VELOCITY_PARAM(wol_opts
, "Wake On Lan options");
363 #define INT_WORKS_DEF 20
364 #define INT_WORKS_MIN 10
365 #define INT_WORKS_MAX 64
367 VELOCITY_PARAM(int_works
, "Number of packets per interrupt services");
369 static int rx_copybreak
= 200;
370 module_param(rx_copybreak
, int, 0644);
371 MODULE_PARM_DESC(rx_copybreak
, "Copy breakpoint for copy-only-tiny-frames");
373 static void velocity_init_info(struct pci_dev
*pdev
, struct velocity_info
*vptr
,
374 const struct velocity_info_tbl
*info
);
375 static int velocity_get_pci_info(struct velocity_info
*, struct pci_dev
*pdev
);
376 static void velocity_print_info(struct velocity_info
*vptr
);
377 static int velocity_open(struct net_device
*dev
);
378 static int velocity_change_mtu(struct net_device
*dev
, int mtu
);
379 static int velocity_xmit(struct sk_buff
*skb
, struct net_device
*dev
);
380 static irqreturn_t
velocity_intr(int irq
, void *dev_instance
);
381 static void velocity_set_multi(struct net_device
*dev
);
382 static struct net_device_stats
*velocity_get_stats(struct net_device
*dev
);
383 static int velocity_ioctl(struct net_device
*dev
, struct ifreq
*rq
, int cmd
);
384 static int velocity_close(struct net_device
*dev
);
385 static int velocity_receive_frame(struct velocity_info
*, int idx
);
386 static int velocity_alloc_rx_buf(struct velocity_info
*, int idx
);
387 static void velocity_free_rd_ring(struct velocity_info
*vptr
);
388 static void velocity_free_tx_buf(struct velocity_info
*vptr
, struct velocity_td_info
*);
389 static int velocity_soft_reset(struct velocity_info
*vptr
);
390 static void mii_init(struct velocity_info
*vptr
, u32 mii_status
);
391 static u32
velocity_get_link(struct net_device
*dev
);
392 static u32
velocity_get_opt_media_mode(struct velocity_info
*vptr
);
393 static void velocity_print_link_status(struct velocity_info
*vptr
);
394 static void safe_disable_mii_autopoll(struct mac_regs __iomem
* regs
);
395 static void velocity_shutdown(struct velocity_info
*vptr
);
396 static void enable_flow_control_ability(struct velocity_info
*vptr
);
397 static void enable_mii_autopoll(struct mac_regs __iomem
* regs
);
398 static int velocity_mii_read(struct mac_regs __iomem
*, u8 byIdx
, u16
* pdata
);
399 static int velocity_mii_write(struct mac_regs __iomem
*, u8 byMiiAddr
, u16 data
);
400 static u32
mii_check_media_mode(struct mac_regs __iomem
* regs
);
401 static u32
check_connection_type(struct mac_regs __iomem
* regs
);
402 static int velocity_set_media_mode(struct velocity_info
*vptr
, u32 mii_status
);
406 static int velocity_suspend(struct pci_dev
*pdev
, pm_message_t state
);
407 static int velocity_resume(struct pci_dev
*pdev
);
409 static DEFINE_SPINLOCK(velocity_dev_list_lock
);
410 static LIST_HEAD(velocity_dev_list
);
414 #if defined(CONFIG_PM) && defined(CONFIG_INET)
416 static int velocity_netdev_event(struct notifier_block
*nb
, unsigned long notification
, void *ptr
);
418 static struct notifier_block velocity_inetaddr_notifier
= {
419 .notifier_call
= velocity_netdev_event
,
422 static void velocity_register_notifier(void)
424 register_inetaddr_notifier(&velocity_inetaddr_notifier
);
427 static void velocity_unregister_notifier(void)
429 unregister_inetaddr_notifier(&velocity_inetaddr_notifier
);
434 #define velocity_register_notifier() do {} while (0)
435 #define velocity_unregister_notifier() do {} while (0)
440 * Internal board variants. At the moment we have only one
443 static struct velocity_info_tbl chip_info_table
[] = {
444 {CHIP_TYPE_VT6110
, "VIA Networking Velocity Family Gigabit Ethernet Adapter", 1, 0x00FFFFFFUL
},
449 * Describe the PCI device identifiers that we support in this
450 * device driver. Used for hotplug autoloading.
453 static const struct pci_device_id velocity_id_table
[] __devinitdata
= {
454 { PCI_DEVICE(PCI_VENDOR_ID_VIA
, PCI_DEVICE_ID_VIA_612X
) },
458 MODULE_DEVICE_TABLE(pci
, velocity_id_table
);
461 * get_chip_name - identifier to name
462 * @id: chip identifier
464 * Given a chip identifier return a suitable description. Returns
465 * a pointer a static string valid while the driver is loaded.
468 static const char __devinit
*get_chip_name(enum chip_type chip_id
)
471 for (i
= 0; chip_info_table
[i
].name
!= NULL
; i
++)
472 if (chip_info_table
[i
].chip_id
== chip_id
)
474 return chip_info_table
[i
].name
;
478 * velocity_remove1 - device unplug
479 * @pdev: PCI device being removed
481 * Device unload callback. Called on an unplug or on module
482 * unload for each active device that is present. Disconnects
483 * the device from the network layer and frees all the resources
486 static void __devexit
velocity_remove1(struct pci_dev
*pdev
)
488 struct net_device
*dev
= pci_get_drvdata(pdev
);
489 struct velocity_info
*vptr
= netdev_priv(dev
);
494 spin_lock_irqsave(&velocity_dev_list_lock
, flags
);
495 if (!list_empty(&velocity_dev_list
))
496 list_del(&vptr
->list
);
497 spin_unlock_irqrestore(&velocity_dev_list_lock
, flags
);
499 unregister_netdev(dev
);
500 iounmap(vptr
->mac_regs
);
501 pci_release_regions(pdev
);
502 pci_disable_device(pdev
);
503 pci_set_drvdata(pdev
, NULL
);
510 * velocity_set_int_opt - parser for integer options
511 * @opt: pointer to option value
512 * @val: value the user requested (or -1 for default)
513 * @min: lowest value allowed
514 * @max: highest value allowed
515 * @def: default value
516 * @name: property name
519 * Set an integer property in the module options. This function does
520 * all the verification and checking as well as reporting so that
521 * we don't duplicate code for each option.
524 static void __devinit
velocity_set_int_opt(int *opt
, int val
, int min
, int max
, int def
, char *name
, const char *devname
)
528 else if (val
< min
|| val
> max
) {
529 VELOCITY_PRT(MSG_LEVEL_INFO
, KERN_NOTICE
"%s: the value of parameter %s is invalid, the valid range is (%d-%d)\n",
530 devname
, name
, min
, max
);
533 VELOCITY_PRT(MSG_LEVEL_INFO
, KERN_INFO
"%s: set value of parameter %s to %d\n",
540 * velocity_set_bool_opt - parser for boolean options
541 * @opt: pointer to option value
542 * @val: value the user requested (or -1 for default)
543 * @def: default value (yes/no)
544 * @flag: numeric value to set for true.
545 * @name: property name
548 * Set a boolean property in the module options. This function does
549 * all the verification and checking as well as reporting so that
550 * we don't duplicate code for each option.
553 static void __devinit
velocity_set_bool_opt(u32
* opt
, int val
, int def
, u32 flag
, char *name
, const char *devname
)
557 *opt
|= (def
? flag
: 0);
558 else if (val
< 0 || val
> 1) {
559 printk(KERN_NOTICE
"%s: the value of parameter %s is invalid, the valid range is (0-1)\n",
561 *opt
|= (def
? flag
: 0);
563 printk(KERN_INFO
"%s: set parameter %s to %s\n",
564 devname
, name
, val
? "TRUE" : "FALSE");
565 *opt
|= (val
? flag
: 0);
570 * velocity_get_options - set options on device
571 * @opts: option structure for the device
572 * @index: index of option to use in module options array
573 * @devname: device name
575 * Turn the module and command options into a single structure
576 * for the current device
579 static void __devinit
velocity_get_options(struct velocity_opt
*opts
, int index
, const char *devname
)
582 velocity_set_int_opt(&opts
->rx_thresh
, rx_thresh
[index
], RX_THRESH_MIN
, RX_THRESH_MAX
, RX_THRESH_DEF
, "rx_thresh", devname
);
583 velocity_set_int_opt(&opts
->DMA_length
, DMA_length
[index
], DMA_LENGTH_MIN
, DMA_LENGTH_MAX
, DMA_LENGTH_DEF
, "DMA_length", devname
);
584 velocity_set_int_opt(&opts
->numrx
, RxDescriptors
[index
], RX_DESC_MIN
, RX_DESC_MAX
, RX_DESC_DEF
, "RxDescriptors", devname
);
585 velocity_set_int_opt(&opts
->numtx
, TxDescriptors
[index
], TX_DESC_MIN
, TX_DESC_MAX
, TX_DESC_DEF
, "TxDescriptors", devname
);
587 velocity_set_bool_opt(&opts
->flags
, txcsum_offload
[index
], TX_CSUM_DEF
, VELOCITY_FLAGS_TX_CSUM
, "txcsum_offload", devname
);
588 velocity_set_int_opt(&opts
->flow_cntl
, flow_control
[index
], FLOW_CNTL_MIN
, FLOW_CNTL_MAX
, FLOW_CNTL_DEF
, "flow_control", devname
);
589 velocity_set_bool_opt(&opts
->flags
, IP_byte_align
[index
], IP_ALIG_DEF
, VELOCITY_FLAGS_IP_ALIGN
, "IP_byte_align", devname
);
590 velocity_set_bool_opt(&opts
->flags
, ValPktLen
[index
], VAL_PKT_LEN_DEF
, VELOCITY_FLAGS_VAL_PKT_LEN
, "ValPktLen", devname
);
591 velocity_set_int_opt((int *) &opts
->spd_dpx
, speed_duplex
[index
], MED_LNK_MIN
, MED_LNK_MAX
, MED_LNK_DEF
, "Media link mode", devname
);
592 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
);
593 velocity_set_int_opt((int *) &opts
->int_works
, int_works
[index
], INT_WORKS_MIN
, INT_WORKS_MAX
, INT_WORKS_DEF
, "Interrupt service works", devname
);
594 opts
->numrx
= (opts
->numrx
& ~3);
598 * velocity_init_cam_filter - initialise CAM
599 * @vptr: velocity to program
601 * Initialize the content addressable memory used for filters. Load
602 * appropriately according to the presence of VLAN
605 static void velocity_init_cam_filter(struct velocity_info
*vptr
)
607 struct mac_regs __iomem
* regs
= vptr
->mac_regs
;
609 /* Turn on MCFG_PQEN, turn off MCFG_RTGOPT */
610 WORD_REG_BITS_SET(MCFG_PQEN
, MCFG_RTGOPT
, ®s
->MCFG
);
611 WORD_REG_BITS_ON(MCFG_VIDFR
, ®s
->MCFG
);
613 /* Disable all CAMs */
614 memset(vptr
->vCAMmask
, 0, sizeof(u8
) * 8);
615 memset(vptr
->mCAMmask
, 0, sizeof(u8
) * 8);
616 mac_set_vlan_cam_mask(regs
, vptr
->vCAMmask
);
617 mac_set_cam_mask(regs
, vptr
->mCAMmask
);
621 unsigned int vid
, i
= 0;
623 if (!vlan_group_get_device(vptr
->vlgrp
, 0))
624 WORD_REG_BITS_ON(MCFG_RTGOPT
, ®s
->MCFG
);
626 for (vid
= 1; (vid
< VLAN_VID_MASK
); vid
++) {
627 if (vlan_group_get_device(vptr
->vlgrp
, vid
)) {
628 mac_set_vlan_cam(regs
, i
, (u8
*) &vid
);
629 vptr
->vCAMmask
[i
/ 8] |= 0x1 << (i
% 8);
630 if (++i
>= VCAM_SIZE
)
634 mac_set_vlan_cam_mask(regs
, vptr
->vCAMmask
);
638 static void velocity_vlan_rx_register(struct net_device
*dev
,
639 struct vlan_group
*grp
)
641 struct velocity_info
*vptr
= netdev_priv(dev
);
646 static void velocity_vlan_rx_add_vid(struct net_device
*dev
, unsigned short vid
)
648 struct velocity_info
*vptr
= netdev_priv(dev
);
650 spin_lock_irq(&vptr
->lock
);
651 velocity_init_cam_filter(vptr
);
652 spin_unlock_irq(&vptr
->lock
);
655 static void velocity_vlan_rx_kill_vid(struct net_device
*dev
, unsigned short vid
)
657 struct velocity_info
*vptr
= netdev_priv(dev
);
659 spin_lock_irq(&vptr
->lock
);
660 vlan_group_set_device(vptr
->vlgrp
, vid
, NULL
);
661 velocity_init_cam_filter(vptr
);
662 spin_unlock_irq(&vptr
->lock
);
665 static void velocity_init_rx_ring_indexes(struct velocity_info
*vptr
)
667 vptr
->rx
.dirty
= vptr
->rx
.filled
= vptr
->rx
.curr
= 0;
671 * velocity_rx_reset - handle a receive reset
672 * @vptr: velocity we are resetting
674 * Reset the ownership and status for the receive ring side.
675 * Hand all the receive queue to the NIC.
678 static void velocity_rx_reset(struct velocity_info
*vptr
)
681 struct mac_regs __iomem
* regs
= vptr
->mac_regs
;
684 velocity_init_rx_ring_indexes(vptr
);
687 * Init state, all RD entries belong to the NIC
689 for (i
= 0; i
< vptr
->options
.numrx
; ++i
)
690 vptr
->rx
.ring
[i
].rdesc0
.len
|= OWNED_BY_NIC
;
692 writew(vptr
->options
.numrx
, ®s
->RBRDU
);
693 writel(vptr
->rx
.pool_dma
, ®s
->RDBaseLo
);
694 writew(0, ®s
->RDIdx
);
695 writew(vptr
->options
.numrx
- 1, ®s
->RDCSize
);
699 * velocity_init_registers - initialise MAC registers
700 * @vptr: velocity to init
701 * @type: type of initialisation (hot or cold)
703 * Initialise the MAC on a reset or on first set up on the
707 static void velocity_init_registers(struct velocity_info
*vptr
,
708 enum velocity_init_type type
)
710 struct mac_regs __iomem
* regs
= vptr
->mac_regs
;
716 case VELOCITY_INIT_RESET
:
717 case VELOCITY_INIT_WOL
:
719 netif_stop_queue(vptr
->dev
);
722 * Reset RX to prevent RX pointer not on the 4X location
724 velocity_rx_reset(vptr
);
725 mac_rx_queue_run(regs
);
726 mac_rx_queue_wake(regs
);
728 mii_status
= velocity_get_opt_media_mode(vptr
);
729 if (velocity_set_media_mode(vptr
, mii_status
) != VELOCITY_LINK_CHANGE
) {
730 velocity_print_link_status(vptr
);
731 if (!(vptr
->mii_status
& VELOCITY_LINK_FAIL
))
732 netif_wake_queue(vptr
->dev
);
735 enable_flow_control_ability(vptr
);
738 writel(CR0_STOP
, ®s
->CR0Clr
);
739 writel((CR0_DPOLL
| CR0_TXON
| CR0_RXON
| CR0_STRT
),
744 case VELOCITY_INIT_COLD
:
749 velocity_soft_reset(vptr
);
752 mac_eeprom_reload(regs
);
753 for (i
= 0; i
< 6; i
++) {
754 writeb(vptr
->dev
->dev_addr
[i
], &(regs
->PAR
[i
]));
757 * clear Pre_ACPI bit.
759 BYTE_REG_BITS_OFF(CFGA_PACPI
, &(regs
->CFGA
));
760 mac_set_rx_thresh(regs
, vptr
->options
.rx_thresh
);
761 mac_set_dma_length(regs
, vptr
->options
.DMA_length
);
763 writeb(WOLCFG_SAM
| WOLCFG_SAB
, ®s
->WOLCFGSet
);
765 * Back off algorithm use original IEEE standard
767 BYTE_REG_BITS_SET(CFGB_OFSET
, (CFGB_CRANDOM
| CFGB_CAP
| CFGB_MBA
| CFGB_BAKOPT
), ®s
->CFGB
);
772 velocity_init_cam_filter(vptr
);
775 * Set packet filter: Receive directed and broadcast address
777 velocity_set_multi(vptr
->dev
);
780 * Enable MII auto-polling
782 enable_mii_autopoll(regs
);
784 vptr
->int_mask
= INT_MASK_DEF
;
786 writel(vptr
->rx
.pool_dma
, ®s
->RDBaseLo
);
787 writew(vptr
->options
.numrx
- 1, ®s
->RDCSize
);
788 mac_rx_queue_run(regs
);
789 mac_rx_queue_wake(regs
);
791 writew(vptr
->options
.numtx
- 1, ®s
->TDCSize
);
793 for (i
= 0; i
< vptr
->tx
.numq
; i
++) {
794 writel(vptr
->tx
.pool_dma
[i
], ®s
->TDBaseLo
[i
]);
795 mac_tx_queue_run(regs
, i
);
798 init_flow_control_register(vptr
);
800 writel(CR0_STOP
, ®s
->CR0Clr
);
801 writel((CR0_DPOLL
| CR0_TXON
| CR0_RXON
| CR0_STRT
), ®s
->CR0Set
);
803 mii_status
= velocity_get_opt_media_mode(vptr
);
804 netif_stop_queue(vptr
->dev
);
806 mii_init(vptr
, mii_status
);
808 if (velocity_set_media_mode(vptr
, mii_status
) != VELOCITY_LINK_CHANGE
) {
809 velocity_print_link_status(vptr
);
810 if (!(vptr
->mii_status
& VELOCITY_LINK_FAIL
))
811 netif_wake_queue(vptr
->dev
);
814 enable_flow_control_ability(vptr
);
815 mac_hw_mibs_init(regs
);
816 mac_write_int_mask(vptr
->int_mask
, regs
);
823 * velocity_soft_reset - soft reset
824 * @vptr: velocity to reset
826 * Kick off a soft reset of the velocity adapter and then poll
827 * until the reset sequence has completed before returning.
830 static int velocity_soft_reset(struct velocity_info
*vptr
)
832 struct mac_regs __iomem
* regs
= vptr
->mac_regs
;
835 writel(CR0_SFRST
, ®s
->CR0Set
);
837 for (i
= 0; i
< W_MAX_TIMEOUT
; i
++) {
839 if (!DWORD_REG_BITS_IS_ON(CR0_SFRST
, ®s
->CR0Set
))
843 if (i
== W_MAX_TIMEOUT
) {
844 writel(CR0_FORSRST
, ®s
->CR0Set
);
845 /* FIXME: PCI POSTING */
852 static const struct net_device_ops velocity_netdev_ops
= {
853 .ndo_open
= velocity_open
,
854 .ndo_stop
= velocity_close
,
855 .ndo_start_xmit
= velocity_xmit
,
856 .ndo_get_stats
= velocity_get_stats
,
857 .ndo_validate_addr
= eth_validate_addr
,
858 .ndo_set_mac_address
= eth_mac_addr
,
859 .ndo_set_multicast_list
= velocity_set_multi
,
860 .ndo_change_mtu
= velocity_change_mtu
,
861 .ndo_do_ioctl
= velocity_ioctl
,
862 .ndo_vlan_rx_add_vid
= velocity_vlan_rx_add_vid
,
863 .ndo_vlan_rx_kill_vid
= velocity_vlan_rx_kill_vid
,
864 .ndo_vlan_rx_register
= velocity_vlan_rx_register
,
868 * velocity_found1 - set up discovered velocity card
870 * @ent: PCI device table entry that matched
872 * Configure a discovered adapter from scratch. Return a negative
873 * errno error code on failure paths.
876 static int __devinit
velocity_found1(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
878 static int first
= 1;
879 struct net_device
*dev
;
881 const char *drv_string
;
882 const struct velocity_info_tbl
*info
= &chip_info_table
[ent
->driver_data
];
883 struct velocity_info
*vptr
;
884 struct mac_regs __iomem
* regs
;
887 /* FIXME: this driver, like almost all other ethernet drivers,
888 * can support more than MAX_UNITS.
890 if (velocity_nics
>= MAX_UNITS
) {
891 dev_notice(&pdev
->dev
, "already found %d NICs.\n",
896 dev
= alloc_etherdev(sizeof(struct velocity_info
));
898 dev_err(&pdev
->dev
, "allocate net device failed.\n");
902 /* Chain it all together */
904 SET_NETDEV_DEV(dev
, &pdev
->dev
);
905 vptr
= netdev_priv(dev
);
909 printk(KERN_INFO
"%s Ver. %s\n",
910 VELOCITY_FULL_DRV_NAM
, VELOCITY_VERSION
);
911 printk(KERN_INFO
"Copyright (c) 2002, 2003 VIA Networking Technologies, Inc.\n");
912 printk(KERN_INFO
"Copyright (c) 2004 Red Hat Inc.\n");
916 velocity_init_info(pdev
, vptr
, info
);
920 dev
->irq
= pdev
->irq
;
922 ret
= pci_enable_device(pdev
);
926 ret
= velocity_get_pci_info(vptr
, pdev
);
928 /* error message already printed */
932 ret
= pci_request_regions(pdev
, VELOCITY_NAME
);
934 dev_err(&pdev
->dev
, "No PCI resources.\n");
938 regs
= ioremap(vptr
->memaddr
, VELOCITY_IO_SIZE
);
941 goto err_release_res
;
944 vptr
->mac_regs
= regs
;
948 dev
->base_addr
= vptr
->ioaddr
;
950 for (i
= 0; i
< 6; i
++)
951 dev
->dev_addr
[i
] = readb(®s
->PAR
[i
]);
954 drv_string
= dev_driver_string(&pdev
->dev
);
956 velocity_get_options(&vptr
->options
, velocity_nics
, drv_string
);
959 * Mask out the options cannot be set to the chip
962 vptr
->options
.flags
&= info
->flags
;
965 * Enable the chip specified capbilities
968 vptr
->flags
= vptr
->options
.flags
| (info
->flags
& 0xFF000000UL
);
970 vptr
->wol_opts
= vptr
->options
.wol_opts
;
971 vptr
->flags
|= VELOCITY_FLAGS_WOL_ENABLED
;
973 vptr
->phy_id
= MII_GET_PHY_ID(vptr
->mac_regs
);
975 dev
->irq
= pdev
->irq
;
976 dev
->netdev_ops
= &velocity_netdev_ops
;
977 dev
->ethtool_ops
= &velocity_ethtool_ops
;
979 #ifdef VELOCITY_ZERO_COPY_SUPPORT
980 dev
->features
|= NETIF_F_SG
;
982 dev
->features
|= NETIF_F_HW_VLAN_TX
| NETIF_F_HW_VLAN_FILTER
|
985 if (vptr
->flags
& VELOCITY_FLAGS_TX_CSUM
)
986 dev
->features
|= NETIF_F_IP_CSUM
;
988 ret
= register_netdev(dev
);
992 if (velocity_get_link(dev
))
993 netif_carrier_off(dev
);
995 velocity_print_info(vptr
);
996 pci_set_drvdata(pdev
, dev
);
998 /* and leave the chip powered down */
1000 pci_set_power_state(pdev
, PCI_D3hot
);
1003 unsigned long flags
;
1005 spin_lock_irqsave(&velocity_dev_list_lock
, flags
);
1006 list_add(&vptr
->list
, &velocity_dev_list
);
1007 spin_unlock_irqrestore(&velocity_dev_list_lock
, flags
);
1017 pci_release_regions(pdev
);
1019 pci_disable_device(pdev
);
1026 * velocity_print_info - per driver data
1029 * Print per driver data as the kernel driver finds Velocity
1033 static void __devinit
velocity_print_info(struct velocity_info
*vptr
)
1035 struct net_device
*dev
= vptr
->dev
;
1037 printk(KERN_INFO
"%s: %s\n", dev
->name
, get_chip_name(vptr
->chip_id
));
1038 printk(KERN_INFO
"%s: Ethernet Address: %2.2X:%2.2X:%2.2X:%2.2X:%2.2X:%2.2X\n",
1040 dev
->dev_addr
[0], dev
->dev_addr
[1], dev
->dev_addr
[2],
1041 dev
->dev_addr
[3], dev
->dev_addr
[4], dev
->dev_addr
[5]);
1045 * velocity_init_info - init private data
1047 * @vptr: Velocity info
1050 * Set up the initial velocity_info struct for the device that has been
1054 static void __devinit
velocity_init_info(struct pci_dev
*pdev
,
1055 struct velocity_info
*vptr
,
1056 const struct velocity_info_tbl
*info
)
1058 memset(vptr
, 0, sizeof(struct velocity_info
));
1061 vptr
->chip_id
= info
->chip_id
;
1062 vptr
->tx
.numq
= info
->txqueue
;
1063 vptr
->multicast_limit
= MCAM_SIZE
;
1064 spin_lock_init(&vptr
->lock
);
1065 INIT_LIST_HEAD(&vptr
->list
);
1069 * velocity_get_pci_info - retrieve PCI info for device
1070 * @vptr: velocity device
1071 * @pdev: PCI device it matches
1073 * Retrieve the PCI configuration space data that interests us from
1074 * the kernel PCI layer
1077 static int __devinit
velocity_get_pci_info(struct velocity_info
*vptr
, struct pci_dev
*pdev
)
1079 vptr
->rev_id
= pdev
->revision
;
1081 pci_set_master(pdev
);
1083 vptr
->ioaddr
= pci_resource_start(pdev
, 0);
1084 vptr
->memaddr
= pci_resource_start(pdev
, 1);
1086 if (!(pci_resource_flags(pdev
, 0) & IORESOURCE_IO
)) {
1088 "region #0 is not an I/O resource, aborting.\n");
1092 if ((pci_resource_flags(pdev
, 1) & IORESOURCE_IO
)) {
1094 "region #1 is an I/O resource, aborting.\n");
1098 if (pci_resource_len(pdev
, 1) < VELOCITY_IO_SIZE
) {
1099 dev_err(&pdev
->dev
, "region #1 is too small.\n");
1108 * velocity_init_dma_rings - set up DMA rings
1109 * @vptr: Velocity to set up
1111 * Allocate PCI mapped DMA rings for the receive and transmit layer
1115 static int velocity_init_dma_rings(struct velocity_info
*vptr
)
1117 struct velocity_opt
*opt
= &vptr
->options
;
1118 const unsigned int rx_ring_size
= opt
->numrx
* sizeof(struct rx_desc
);
1119 const unsigned int tx_ring_size
= opt
->numtx
* sizeof(struct tx_desc
);
1120 struct pci_dev
*pdev
= vptr
->pdev
;
1121 dma_addr_t pool_dma
;
1126 * Allocate all RD/TD rings a single pool.
1128 * pci_alloc_consistent() fulfills the requirement for 64 bytes
1131 pool
= pci_alloc_consistent(pdev
, tx_ring_size
* vptr
->tx
.numq
+
1132 rx_ring_size
, &pool_dma
);
1134 dev_err(&pdev
->dev
, "%s : DMA memory allocation failed.\n",
1139 vptr
->rx
.ring
= pool
;
1140 vptr
->rx
.pool_dma
= pool_dma
;
1142 pool
+= rx_ring_size
;
1143 pool_dma
+= rx_ring_size
;
1145 for (i
= 0; i
< vptr
->tx
.numq
; i
++) {
1146 vptr
->tx
.rings
[i
] = pool
;
1147 vptr
->tx
.pool_dma
[i
] = pool_dma
;
1148 pool
+= tx_ring_size
;
1149 pool_dma
+= tx_ring_size
;
1156 * velocity_free_dma_rings - free PCI ring pointers
1157 * @vptr: Velocity to free from
1159 * Clean up the PCI ring buffers allocated to this velocity.
1162 static void velocity_free_dma_rings(struct velocity_info
*vptr
)
1164 const int size
= vptr
->options
.numrx
* sizeof(struct rx_desc
) +
1165 vptr
->options
.numtx
* sizeof(struct tx_desc
) * vptr
->tx
.numq
;
1167 pci_free_consistent(vptr
->pdev
, size
, vptr
->rx
.ring
, vptr
->rx
.pool_dma
);
1170 static void velocity_give_many_rx_descs(struct velocity_info
*vptr
)
1172 struct mac_regs __iomem
*regs
= vptr
->mac_regs
;
1173 int avail
, dirty
, unusable
;
1176 * RD number must be equal to 4X per hardware spec
1177 * (programming guide rev 1.20, p.13)
1179 if (vptr
->rx
.filled
< 4)
1184 unusable
= vptr
->rx
.filled
& 0x0003;
1185 dirty
= vptr
->rx
.dirty
- unusable
;
1186 for (avail
= vptr
->rx
.filled
& 0xfffc; avail
; avail
--) {
1187 dirty
= (dirty
> 0) ? dirty
- 1 : vptr
->options
.numrx
- 1;
1188 vptr
->rx
.ring
[dirty
].rdesc0
.len
|= OWNED_BY_NIC
;
1191 writew(vptr
->rx
.filled
& 0xfffc, ®s
->RBRDU
);
1192 vptr
->rx
.filled
= unusable
;
1195 static int velocity_rx_refill(struct velocity_info
*vptr
)
1197 int dirty
= vptr
->rx
.dirty
, done
= 0;
1200 struct rx_desc
*rd
= vptr
->rx
.ring
+ dirty
;
1202 /* Fine for an all zero Rx desc at init time as well */
1203 if (rd
->rdesc0
.len
& OWNED_BY_NIC
)
1206 if (!vptr
->rx
.info
[dirty
].skb
) {
1207 if (velocity_alloc_rx_buf(vptr
, dirty
) < 0)
1211 dirty
= (dirty
< vptr
->options
.numrx
- 1) ? dirty
+ 1 : 0;
1212 } while (dirty
!= vptr
->rx
.curr
);
1215 vptr
->rx
.dirty
= dirty
;
1216 vptr
->rx
.filled
+= done
;
1222 static void velocity_set_rxbufsize(struct velocity_info
*vptr
, int mtu
)
1224 vptr
->rx
.buf_sz
= (mtu
<= ETH_DATA_LEN
) ? PKT_BUF_SZ
: mtu
+ 32;
1228 * velocity_init_rd_ring - set up receive ring
1229 * @vptr: velocity to configure
1231 * Allocate and set up the receive buffers for each ring slot and
1232 * assign them to the network adapter.
1235 static int velocity_init_rd_ring(struct velocity_info
*vptr
)
1239 vptr
->rx
.info
= kcalloc(vptr
->options
.numrx
,
1240 sizeof(struct velocity_rd_info
), GFP_KERNEL
);
1244 velocity_init_rx_ring_indexes(vptr
);
1246 if (velocity_rx_refill(vptr
) != vptr
->options
.numrx
) {
1247 VELOCITY_PRT(MSG_LEVEL_ERR
, KERN_ERR
1248 "%s: failed to allocate RX buffer.\n", vptr
->dev
->name
);
1249 velocity_free_rd_ring(vptr
);
1259 * velocity_free_rd_ring - free receive ring
1260 * @vptr: velocity to clean up
1262 * Free the receive buffers for each ring slot and any
1263 * attached socket buffers that need to go away.
1266 static void velocity_free_rd_ring(struct velocity_info
*vptr
)
1270 if (vptr
->rx
.info
== NULL
)
1273 for (i
= 0; i
< vptr
->options
.numrx
; i
++) {
1274 struct velocity_rd_info
*rd_info
= &(vptr
->rx
.info
[i
]);
1275 struct rx_desc
*rd
= vptr
->rx
.ring
+ i
;
1277 memset(rd
, 0, sizeof(*rd
));
1281 pci_unmap_single(vptr
->pdev
, rd_info
->skb_dma
, vptr
->rx
.buf_sz
,
1282 PCI_DMA_FROMDEVICE
);
1283 rd_info
->skb_dma
= 0;
1285 dev_kfree_skb(rd_info
->skb
);
1286 rd_info
->skb
= NULL
;
1289 kfree(vptr
->rx
.info
);
1290 vptr
->rx
.info
= NULL
;
1294 * velocity_init_td_ring - set up transmit ring
1297 * Set up the transmit ring and chain the ring pointers together.
1298 * Returns zero on success or a negative posix errno code for
1302 static int velocity_init_td_ring(struct velocity_info
*vptr
)
1307 /* Init the TD ring entries */
1308 for (j
= 0; j
< vptr
->tx
.numq
; j
++) {
1309 curr
= vptr
->tx
.pool_dma
[j
];
1311 vptr
->tx
.infos
[j
] = kcalloc(vptr
->options
.numtx
,
1312 sizeof(struct velocity_td_info
),
1314 if (!vptr
->tx
.infos
[j
]) {
1316 kfree(vptr
->tx
.infos
[j
]);
1320 vptr
->tx
.tail
[j
] = vptr
->tx
.curr
[j
] = vptr
->tx
.used
[j
] = 0;
1326 * FIXME: could we merge this with velocity_free_tx_buf ?
1329 static void velocity_free_td_ring_entry(struct velocity_info
*vptr
,
1332 struct velocity_td_info
* td_info
= &(vptr
->tx
.infos
[q
][n
]);
1335 if (td_info
== NULL
)
1339 for (i
= 0; i
< td_info
->nskb_dma
; i
++)
1341 if (td_info
->skb_dma
[i
]) {
1342 pci_unmap_single(vptr
->pdev
, td_info
->skb_dma
[i
],
1343 td_info
->skb
->len
, PCI_DMA_TODEVICE
);
1344 td_info
->skb_dma
[i
] = 0;
1347 dev_kfree_skb(td_info
->skb
);
1348 td_info
->skb
= NULL
;
1353 * velocity_free_td_ring - free td ring
1356 * Free up the transmit ring for this particular velocity adapter.
1357 * We free the ring contents but not the ring itself.
1360 static void velocity_free_td_ring(struct velocity_info
*vptr
)
1364 for (j
= 0; j
< vptr
->tx
.numq
; j
++) {
1365 if (vptr
->tx
.infos
[j
] == NULL
)
1367 for (i
= 0; i
< vptr
->options
.numtx
; i
++) {
1368 velocity_free_td_ring_entry(vptr
, j
, i
);
1371 kfree(vptr
->tx
.infos
[j
]);
1372 vptr
->tx
.infos
[j
] = NULL
;
1377 * velocity_rx_srv - service RX interrupt
1379 * @status: adapter status (unused)
1381 * Walk the receive ring of the velocity adapter and remove
1382 * any received packets from the receive queue. Hand the ring
1383 * slots back to the adapter for reuse.
1386 static int velocity_rx_srv(struct velocity_info
*vptr
, int status
)
1388 struct net_device_stats
*stats
= &vptr
->stats
;
1389 int rd_curr
= vptr
->rx
.curr
;
1393 struct rx_desc
*rd
= vptr
->rx
.ring
+ rd_curr
;
1395 if (!vptr
->rx
.info
[rd_curr
].skb
)
1398 if (rd
->rdesc0
.len
& OWNED_BY_NIC
)
1404 * Don't drop CE or RL error frame although RXOK is off
1406 if (rd
->rdesc0
.RSR
& (RSR_RXOK
| RSR_CE
| RSR_RL
)) {
1407 if (velocity_receive_frame(vptr
, rd_curr
) < 0)
1408 stats
->rx_dropped
++;
1410 if (rd
->rdesc0
.RSR
& RSR_CRC
)
1411 stats
->rx_crc_errors
++;
1412 if (rd
->rdesc0
.RSR
& RSR_FAE
)
1413 stats
->rx_frame_errors
++;
1415 stats
->rx_dropped
++;
1418 rd
->size
|= RX_INTEN
;
1421 if (rd_curr
>= vptr
->options
.numrx
)
1423 } while (++works
<= 15);
1425 vptr
->rx
.curr
= rd_curr
;
1427 if ((works
> 0) && (velocity_rx_refill(vptr
) > 0))
1428 velocity_give_many_rx_descs(vptr
);
1435 * velocity_rx_csum - checksum process
1436 * @rd: receive packet descriptor
1437 * @skb: network layer packet buffer
1439 * Process the status bits for the received packet and determine
1440 * if the checksum was computed and verified by the hardware
1443 static inline void velocity_rx_csum(struct rx_desc
*rd
, struct sk_buff
*skb
)
1445 skb
->ip_summed
= CHECKSUM_NONE
;
1447 if (rd
->rdesc1
.CSM
& CSM_IPKT
) {
1448 if (rd
->rdesc1
.CSM
& CSM_IPOK
) {
1449 if ((rd
->rdesc1
.CSM
& CSM_TCPKT
) ||
1450 (rd
->rdesc1
.CSM
& CSM_UDPKT
)) {
1451 if (!(rd
->rdesc1
.CSM
& CSM_TUPOK
)) {
1455 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
1461 * velocity_rx_copy - in place Rx copy for small packets
1462 * @rx_skb: network layer packet buffer candidate
1463 * @pkt_size: received data size
1464 * @rd: receive packet descriptor
1465 * @dev: network device
1467 * Replace the current skb that is scheduled for Rx processing by a
1468 * shorter, immediatly allocated skb, if the received packet is small
1469 * enough. This function returns a negative value if the received
1470 * packet is too big or if memory is exhausted.
1472 static int velocity_rx_copy(struct sk_buff
**rx_skb
, int pkt_size
,
1473 struct velocity_info
*vptr
)
1476 if (pkt_size
< rx_copybreak
) {
1477 struct sk_buff
*new_skb
;
1479 new_skb
= netdev_alloc_skb(vptr
->dev
, pkt_size
+ 2);
1481 new_skb
->ip_summed
= rx_skb
[0]->ip_summed
;
1482 skb_reserve(new_skb
, 2);
1483 skb_copy_from_linear_data(*rx_skb
, new_skb
->data
, pkt_size
);
1493 * velocity_iph_realign - IP header alignment
1494 * @vptr: velocity we are handling
1495 * @skb: network layer packet buffer
1496 * @pkt_size: received data size
1498 * Align IP header on a 2 bytes boundary. This behavior can be
1499 * configured by the user.
1501 static inline void velocity_iph_realign(struct velocity_info
*vptr
,
1502 struct sk_buff
*skb
, int pkt_size
)
1504 if (vptr
->flags
& VELOCITY_FLAGS_IP_ALIGN
) {
1505 memmove(skb
->data
+ 2, skb
->data
, pkt_size
);
1506 skb_reserve(skb
, 2);
1511 * velocity_receive_frame - received packet processor
1512 * @vptr: velocity we are handling
1515 * A packet has arrived. We process the packet and if appropriate
1516 * pass the frame up the network stack
1519 static int velocity_receive_frame(struct velocity_info
*vptr
, int idx
)
1521 void (*pci_action
)(struct pci_dev
*, dma_addr_t
, size_t, int);
1522 struct net_device_stats
*stats
= &vptr
->stats
;
1523 struct velocity_rd_info
*rd_info
= &(vptr
->rx
.info
[idx
]);
1524 struct rx_desc
*rd
= &(vptr
->rx
.ring
[idx
]);
1525 int pkt_len
= le16_to_cpu(rd
->rdesc0
.len
) & 0x3fff;
1526 struct sk_buff
*skb
;
1528 if (rd
->rdesc0
.RSR
& (RSR_STP
| RSR_EDP
)) {
1529 VELOCITY_PRT(MSG_LEVEL_VERBOSE
, KERN_ERR
" %s : the received frame span multple RDs.\n", vptr
->dev
->name
);
1530 stats
->rx_length_errors
++;
1534 if (rd
->rdesc0
.RSR
& RSR_MAR
)
1535 vptr
->stats
.multicast
++;
1539 pci_dma_sync_single_for_cpu(vptr
->pdev
, rd_info
->skb_dma
,
1540 vptr
->rx
.buf_sz
, PCI_DMA_FROMDEVICE
);
1543 * Drop frame not meeting IEEE 802.3
1546 if (vptr
->flags
& VELOCITY_FLAGS_VAL_PKT_LEN
) {
1547 if (rd
->rdesc0
.RSR
& RSR_RL
) {
1548 stats
->rx_length_errors
++;
1553 pci_action
= pci_dma_sync_single_for_device
;
1555 velocity_rx_csum(rd
, skb
);
1557 if (velocity_rx_copy(&skb
, pkt_len
, vptr
) < 0) {
1558 velocity_iph_realign(vptr
, skb
, pkt_len
);
1559 pci_action
= pci_unmap_single
;
1560 rd_info
->skb
= NULL
;
1563 pci_action(vptr
->pdev
, rd_info
->skb_dma
, vptr
->rx
.buf_sz
,
1564 PCI_DMA_FROMDEVICE
);
1566 skb_put(skb
, pkt_len
- 4);
1567 skb
->protocol
= eth_type_trans(skb
, vptr
->dev
);
1569 if (vptr
->vlgrp
&& (rd
->rdesc0
.RSR
& RSR_DETAG
)) {
1570 vlan_hwaccel_rx(skb
, vptr
->vlgrp
,
1571 swab16(le16_to_cpu(rd
->rdesc1
.PQTAG
)));
1575 stats
->rx_bytes
+= pkt_len
;
1581 * velocity_alloc_rx_buf - allocate aligned receive buffer
1585 * Allocate a new full sized buffer for the reception of a frame and
1586 * map it into PCI space for the hardware to use. The hardware
1587 * requires *64* byte alignment of the buffer which makes life
1588 * less fun than would be ideal.
1591 static int velocity_alloc_rx_buf(struct velocity_info
*vptr
, int idx
)
1593 struct rx_desc
*rd
= &(vptr
->rx
.ring
[idx
]);
1594 struct velocity_rd_info
*rd_info
= &(vptr
->rx
.info
[idx
]);
1596 rd_info
->skb
= dev_alloc_skb(vptr
->rx
.buf_sz
+ 64);
1597 if (rd_info
->skb
== NULL
)
1601 * Do the gymnastics to get the buffer head for data at
1604 skb_reserve(rd_info
->skb
, (unsigned long) rd_info
->skb
->data
& 63);
1605 rd_info
->skb_dma
= pci_map_single(vptr
->pdev
, rd_info
->skb
->data
,
1606 vptr
->rx
.buf_sz
, PCI_DMA_FROMDEVICE
);
1609 * Fill in the descriptor to match
1612 *((u32
*) & (rd
->rdesc0
)) = 0;
1613 rd
->size
= cpu_to_le16(vptr
->rx
.buf_sz
) | RX_INTEN
;
1614 rd
->pa_low
= cpu_to_le32(rd_info
->skb_dma
);
1620 * tx_srv - transmit interrupt service
1624 * Scan the queues looking for transmitted packets that
1625 * we can complete and clean up. Update any statistics as
1629 static int velocity_tx_srv(struct velocity_info
*vptr
, u32 status
)
1636 struct velocity_td_info
*tdinfo
;
1637 struct net_device_stats
*stats
= &vptr
->stats
;
1639 for (qnum
= 0; qnum
< vptr
->tx
.numq
; qnum
++) {
1640 for (idx
= vptr
->tx
.tail
[qnum
]; vptr
->tx
.used
[qnum
] > 0;
1641 idx
= (idx
+ 1) % vptr
->options
.numtx
) {
1646 td
= &(vptr
->tx
.rings
[qnum
][idx
]);
1647 tdinfo
= &(vptr
->tx
.infos
[qnum
][idx
]);
1649 if (td
->tdesc0
.len
& OWNED_BY_NIC
)
1655 if (td
->tdesc0
.TSR
& TSR0_TERR
) {
1657 stats
->tx_dropped
++;
1658 if (td
->tdesc0
.TSR
& TSR0_CDH
)
1659 stats
->tx_heartbeat_errors
++;
1660 if (td
->tdesc0
.TSR
& TSR0_CRS
)
1661 stats
->tx_carrier_errors
++;
1662 if (td
->tdesc0
.TSR
& TSR0_ABT
)
1663 stats
->tx_aborted_errors
++;
1664 if (td
->tdesc0
.TSR
& TSR0_OWC
)
1665 stats
->tx_window_errors
++;
1667 stats
->tx_packets
++;
1668 stats
->tx_bytes
+= tdinfo
->skb
->len
;
1670 velocity_free_tx_buf(vptr
, tdinfo
);
1671 vptr
->tx
.used
[qnum
]--;
1673 vptr
->tx
.tail
[qnum
] = idx
;
1675 if (AVAIL_TD(vptr
, qnum
) < 1) {
1680 * Look to see if we should kick the transmit network
1681 * layer for more work.
1683 if (netif_queue_stopped(vptr
->dev
) && (full
== 0)
1684 && (!(vptr
->mii_status
& VELOCITY_LINK_FAIL
))) {
1685 netif_wake_queue(vptr
->dev
);
1691 * velocity_print_link_status - link status reporting
1692 * @vptr: velocity to report on
1694 * Turn the link status of the velocity card into a kernel log
1695 * description of the new link state, detailing speed and duplex
1699 static void velocity_print_link_status(struct velocity_info
*vptr
)
1702 if (vptr
->mii_status
& VELOCITY_LINK_FAIL
) {
1703 VELOCITY_PRT(MSG_LEVEL_INFO
, KERN_NOTICE
"%s: failed to detect cable link\n", vptr
->dev
->name
);
1704 } else if (vptr
->options
.spd_dpx
== SPD_DPX_AUTO
) {
1705 VELOCITY_PRT(MSG_LEVEL_INFO
, KERN_NOTICE
"%s: Link auto-negotiation", vptr
->dev
->name
);
1707 if (vptr
->mii_status
& VELOCITY_SPEED_1000
)
1708 VELOCITY_PRT(MSG_LEVEL_INFO
, " speed 1000M bps");
1709 else if (vptr
->mii_status
& VELOCITY_SPEED_100
)
1710 VELOCITY_PRT(MSG_LEVEL_INFO
, " speed 100M bps");
1712 VELOCITY_PRT(MSG_LEVEL_INFO
, " speed 10M bps");
1714 if (vptr
->mii_status
& VELOCITY_DUPLEX_FULL
)
1715 VELOCITY_PRT(MSG_LEVEL_INFO
, " full duplex\n");
1717 VELOCITY_PRT(MSG_LEVEL_INFO
, " half duplex\n");
1719 VELOCITY_PRT(MSG_LEVEL_INFO
, KERN_NOTICE
"%s: Link forced", vptr
->dev
->name
);
1720 switch (vptr
->options
.spd_dpx
) {
1721 case SPD_DPX_100_HALF
:
1722 VELOCITY_PRT(MSG_LEVEL_INFO
, " speed 100M bps half duplex\n");
1724 case SPD_DPX_100_FULL
:
1725 VELOCITY_PRT(MSG_LEVEL_INFO
, " speed 100M bps full duplex\n");
1727 case SPD_DPX_10_HALF
:
1728 VELOCITY_PRT(MSG_LEVEL_INFO
, " speed 10M bps half duplex\n");
1730 case SPD_DPX_10_FULL
:
1731 VELOCITY_PRT(MSG_LEVEL_INFO
, " speed 10M bps full duplex\n");
1740 * velocity_error - handle error from controller
1742 * @status: card status
1744 * Process an error report from the hardware and attempt to recover
1745 * the card itself. At the moment we cannot recover from some
1746 * theoretically impossible errors but this could be fixed using
1747 * the pci_device_failed logic to bounce the hardware
1751 static void velocity_error(struct velocity_info
*vptr
, int status
)
1754 if (status
& ISR_TXSTLI
) {
1755 struct mac_regs __iomem
* regs
= vptr
->mac_regs
;
1757 printk(KERN_ERR
"TD structure error TDindex=%hx\n", readw(®s
->TDIdx
[0]));
1758 BYTE_REG_BITS_ON(TXESR_TDSTR
, ®s
->TXESR
);
1759 writew(TRDCSR_RUN
, ®s
->TDCSRClr
);
1760 netif_stop_queue(vptr
->dev
);
1762 /* FIXME: port over the pci_device_failed code and use it
1766 if (status
& ISR_SRCI
) {
1767 struct mac_regs __iomem
* regs
= vptr
->mac_regs
;
1770 if (vptr
->options
.spd_dpx
== SPD_DPX_AUTO
) {
1771 vptr
->mii_status
= check_connection_type(regs
);
1774 * If it is a 3119, disable frame bursting in
1775 * halfduplex mode and enable it in fullduplex
1778 if (vptr
->rev_id
< REV_ID_VT3216_A0
) {
1779 if (vptr
->mii_status
| VELOCITY_DUPLEX_FULL
)
1780 BYTE_REG_BITS_ON(TCR_TB2BDIS
, ®s
->TCR
);
1782 BYTE_REG_BITS_OFF(TCR_TB2BDIS
, ®s
->TCR
);
1785 * Only enable CD heart beat counter in 10HD mode
1787 if (!(vptr
->mii_status
& VELOCITY_DUPLEX_FULL
) && (vptr
->mii_status
& VELOCITY_SPEED_10
)) {
1788 BYTE_REG_BITS_OFF(TESTCFG_HBDIS
, ®s
->TESTCFG
);
1790 BYTE_REG_BITS_ON(TESTCFG_HBDIS
, ®s
->TESTCFG
);
1794 * Get link status from PHYSR0
1796 linked
= readb(®s
->PHYSR0
) & PHYSR0_LINKGD
;
1799 vptr
->mii_status
&= ~VELOCITY_LINK_FAIL
;
1800 netif_carrier_on(vptr
->dev
);
1802 vptr
->mii_status
|= VELOCITY_LINK_FAIL
;
1803 netif_carrier_off(vptr
->dev
);
1806 velocity_print_link_status(vptr
);
1807 enable_flow_control_ability(vptr
);
1810 * Re-enable auto-polling because SRCI will disable
1814 enable_mii_autopoll(regs
);
1816 if (vptr
->mii_status
& VELOCITY_LINK_FAIL
)
1817 netif_stop_queue(vptr
->dev
);
1819 netif_wake_queue(vptr
->dev
);
1822 if (status
& ISR_MIBFI
)
1823 velocity_update_hw_mibs(vptr
);
1824 if (status
& ISR_LSTEI
)
1825 mac_rx_queue_wake(vptr
->mac_regs
);
1829 * velocity_free_tx_buf - free transmit buffer
1833 * Release an transmit buffer. If the buffer was preallocated then
1834 * recycle it, if not then unmap the buffer.
1837 static void velocity_free_tx_buf(struct velocity_info
*vptr
, struct velocity_td_info
*tdinfo
)
1839 struct sk_buff
*skb
= tdinfo
->skb
;
1844 * Don't unmap the pre-allocated tx_bufs
1846 if (tdinfo
->skb_dma
) {
1848 pktlen
= max_t(unsigned int, skb
->len
, ETH_ZLEN
);
1849 for (i
= 0; i
< tdinfo
->nskb_dma
; i
++) {
1850 #ifdef VELOCITY_ZERO_COPY_SUPPORT
1851 pci_unmap_single(vptr
->pdev
, tdinfo
->skb_dma
[i
], le16_to_cpu(td
->tdesc1
.len
), PCI_DMA_TODEVICE
);
1853 pci_unmap_single(vptr
->pdev
, tdinfo
->skb_dma
[i
], pktlen
, PCI_DMA_TODEVICE
);
1855 tdinfo
->skb_dma
[i
] = 0;
1858 dev_kfree_skb_irq(skb
);
1862 static int velocity_init_rings(struct velocity_info
*vptr
, int mtu
)
1866 velocity_set_rxbufsize(vptr
, mtu
);
1868 ret
= velocity_init_dma_rings(vptr
);
1872 ret
= velocity_init_rd_ring(vptr
);
1874 goto err_free_dma_rings_0
;
1876 ret
= velocity_init_td_ring(vptr
);
1878 goto err_free_rd_ring_1
;
1883 velocity_free_rd_ring(vptr
);
1884 err_free_dma_rings_0
:
1885 velocity_free_dma_rings(vptr
);
1889 static void velocity_free_rings(struct velocity_info
*vptr
)
1891 velocity_free_td_ring(vptr
);
1892 velocity_free_rd_ring(vptr
);
1893 velocity_free_dma_rings(vptr
);
1897 * velocity_open - interface activation callback
1898 * @dev: network layer device to open
1900 * Called when the network layer brings the interface up. Returns
1901 * a negative posix error code on failure, or zero on success.
1903 * All the ring allocation and set up is done on open for this
1904 * adapter to minimise memory usage when inactive
1907 static int velocity_open(struct net_device
*dev
)
1909 struct velocity_info
*vptr
= netdev_priv(dev
);
1912 ret
= velocity_init_rings(vptr
, dev
->mtu
);
1916 /* Ensure chip is running */
1917 pci_set_power_state(vptr
->pdev
, PCI_D0
);
1919 velocity_give_many_rx_descs(vptr
);
1921 velocity_init_registers(vptr
, VELOCITY_INIT_COLD
);
1923 ret
= request_irq(vptr
->pdev
->irq
, &velocity_intr
, IRQF_SHARED
,
1926 /* Power down the chip */
1927 pci_set_power_state(vptr
->pdev
, PCI_D3hot
);
1928 velocity_free_rings(vptr
);
1932 mac_enable_int(vptr
->mac_regs
);
1933 netif_start_queue(dev
);
1934 vptr
->flags
|= VELOCITY_FLAGS_OPENED
;
1940 * velocity_change_mtu - MTU change callback
1941 * @dev: network device
1942 * @new_mtu: desired MTU
1944 * Handle requests from the networking layer for MTU change on
1945 * this interface. It gets called on a change by the network layer.
1946 * Return zero for success or negative posix error code.
1949 static int velocity_change_mtu(struct net_device
*dev
, int new_mtu
)
1951 struct velocity_info
*vptr
= netdev_priv(dev
);
1954 if ((new_mtu
< VELOCITY_MIN_MTU
) || new_mtu
> (VELOCITY_MAX_MTU
)) {
1955 VELOCITY_PRT(MSG_LEVEL_ERR
, KERN_NOTICE
"%s: Invalid MTU.\n",
1961 if (!netif_running(dev
)) {
1966 if (dev
->mtu
!= new_mtu
) {
1967 struct velocity_info
*tmp_vptr
;
1968 unsigned long flags
;
1972 tmp_vptr
= kzalloc(sizeof(*tmp_vptr
), GFP_KERNEL
);
1978 tmp_vptr
->dev
= dev
;
1979 tmp_vptr
->pdev
= vptr
->pdev
;
1980 tmp_vptr
->options
= vptr
->options
;
1981 tmp_vptr
->tx
.numq
= vptr
->tx
.numq
;
1983 ret
= velocity_init_rings(tmp_vptr
, new_mtu
);
1985 goto out_free_tmp_vptr_1
;
1987 spin_lock_irqsave(&vptr
->lock
, flags
);
1989 netif_stop_queue(dev
);
1990 velocity_shutdown(vptr
);
1995 vptr
->rx
= tmp_vptr
->rx
;
1996 vptr
->tx
= tmp_vptr
->tx
;
2003 velocity_give_many_rx_descs(vptr
);
2005 velocity_init_registers(vptr
, VELOCITY_INIT_COLD
);
2007 mac_enable_int(vptr
->mac_regs
);
2008 netif_start_queue(dev
);
2010 spin_unlock_irqrestore(&vptr
->lock
, flags
);
2012 velocity_free_rings(tmp_vptr
);
2014 out_free_tmp_vptr_1
:
2022 * velocity_shutdown - shut down the chip
2023 * @vptr: velocity to deactivate
2025 * Shuts down the internal operations of the velocity and
2026 * disables interrupts, autopolling, transmit and receive
2029 static void velocity_shutdown(struct velocity_info
*vptr
)
2031 struct mac_regs __iomem
* regs
= vptr
->mac_regs
;
2032 mac_disable_int(regs
);
2033 writel(CR0_STOP
, ®s
->CR0Set
);
2034 writew(0xFFFF, ®s
->TDCSRClr
);
2035 writeb(0xFF, ®s
->RDCSRClr
);
2036 safe_disable_mii_autopoll(regs
);
2037 mac_clear_isr(regs
);
2041 * velocity_close - close adapter callback
2042 * @dev: network device
2044 * Callback from the network layer when the velocity is being
2045 * deactivated by the network layer
2048 static int velocity_close(struct net_device
*dev
)
2050 struct velocity_info
*vptr
= netdev_priv(dev
);
2052 netif_stop_queue(dev
);
2053 velocity_shutdown(vptr
);
2055 if (vptr
->flags
& VELOCITY_FLAGS_WOL_ENABLED
)
2056 velocity_get_ip(vptr
);
2058 free_irq(dev
->irq
, dev
);
2060 /* Power down the chip */
2061 pci_set_power_state(vptr
->pdev
, PCI_D3hot
);
2063 velocity_free_rings(vptr
);
2065 vptr
->flags
&= (~VELOCITY_FLAGS_OPENED
);
2070 * velocity_xmit - transmit packet callback
2071 * @skb: buffer to transmit
2072 * @dev: network device
2074 * Called by the networ layer to request a packet is queued to
2075 * the velocity. Returns zero on success.
2078 static int velocity_xmit(struct sk_buff
*skb
, struct net_device
*dev
)
2080 struct velocity_info
*vptr
= netdev_priv(dev
);
2082 struct tx_desc
*td_ptr
;
2083 struct velocity_td_info
*tdinfo
;
2084 unsigned long flags
;
2090 if (skb_padto(skb
, ETH_ZLEN
))
2092 pktlen
= max_t(unsigned int, skb
->len
, ETH_ZLEN
);
2094 len
= cpu_to_le16(pktlen
);
2096 #ifdef VELOCITY_ZERO_COPY_SUPPORT
2097 if (skb_shinfo(skb
)->nr_frags
> 6 && __skb_linearize(skb
)) {
2103 spin_lock_irqsave(&vptr
->lock
, flags
);
2105 index
= vptr
->tx
.curr
[qnum
];
2106 td_ptr
= &(vptr
->tx
.rings
[qnum
][index
]);
2107 tdinfo
= &(vptr
->tx
.infos
[qnum
][index
]);
2109 td_ptr
->tdesc1
.TCR
= TCR0_TIC
;
2110 td_ptr
->td_buf
[0].size
&= ~TD_QUEUE
;
2112 #ifdef VELOCITY_ZERO_COPY_SUPPORT
2113 if (skb_shinfo(skb
)->nr_frags
> 0) {
2114 int nfrags
= skb_shinfo(skb
)->nr_frags
;
2117 skb_copy_from_linear_data(skb
, tdinfo
->buf
, skb
->len
);
2118 tdinfo
->skb_dma
[0] = tdinfo
->buf_dma
;
2119 td_ptr
->tdesc0
.len
= len
;
2120 td_ptr
->tx
.buf
[0].pa_low
= cpu_to_le32(tdinfo
->skb_dma
[0]);
2121 td_ptr
->tx
.buf
[0].pa_high
= 0;
2122 td_ptr
->tx
.buf
[0].size
= len
; /* queue is 0 anyway */
2123 tdinfo
->nskb_dma
= 1;
2126 tdinfo
->nskb_dma
= 0;
2127 tdinfo
->skb_dma
[i
] = pci_map_single(vptr
->pdev
, skb
->data
,
2128 skb_headlen(skb
), PCI_DMA_TODEVICE
);
2130 td_ptr
->tdesc0
.len
= len
;
2132 /* FIXME: support 48bit DMA later */
2133 td_ptr
->tx
.buf
[i
].pa_low
= cpu_to_le32(tdinfo
->skb_dma
);
2134 td_ptr
->tx
.buf
[i
].pa_high
= 0;
2135 td_ptr
->tx
.buf
[i
].size
= cpu_to_le16(skb_headlen(skb
));
2137 for (i
= 0; i
< nfrags
; i
++) {
2138 skb_frag_t
*frag
= &skb_shinfo(skb
)->frags
[i
];
2139 void *addr
= (void *)page_address(frag
->page
) + frag
->page_offset
;
2141 tdinfo
->skb_dma
[i
+ 1] = pci_map_single(vptr
->pdev
, addr
, frag
->size
, PCI_DMA_TODEVICE
);
2143 td_ptr
->tx
.buf
[i
+ 1].pa_low
= cpu_to_le32(tdinfo
->skb_dma
[i
+ 1]);
2144 td_ptr
->tx
.buf
[i
+ 1].pa_high
= 0;
2145 td_ptr
->tx
.buf
[i
+ 1].size
= cpu_to_le16(frag
->size
);
2147 tdinfo
->nskb_dma
= i
- 1;
2154 * Map the linear network buffer into PCI space and
2155 * add it to the transmit ring.
2158 tdinfo
->skb_dma
[0] = pci_map_single(vptr
->pdev
, skb
->data
, pktlen
, PCI_DMA_TODEVICE
);
2159 td_ptr
->tdesc0
.len
= len
;
2160 td_ptr
->td_buf
[0].pa_low
= cpu_to_le32(tdinfo
->skb_dma
[0]);
2161 td_ptr
->td_buf
[0].pa_high
= 0;
2162 td_ptr
->td_buf
[0].size
= len
;
2163 tdinfo
->nskb_dma
= 1;
2165 td_ptr
->tdesc1
.cmd
= TCPLS_NORMAL
+ (tdinfo
->nskb_dma
+ 1) * 16;
2167 if (vptr
->vlgrp
&& vlan_tx_tag_present(skb
)) {
2168 td_ptr
->tdesc1
.vlan
= cpu_to_le16(vlan_tx_tag_get(skb
));
2169 td_ptr
->tdesc1
.TCR
|= TCR0_VETAG
;
2173 * Handle hardware checksum
2175 if ((vptr
->flags
& VELOCITY_FLAGS_TX_CSUM
)
2176 && (skb
->ip_summed
== CHECKSUM_PARTIAL
)) {
2177 const struct iphdr
*ip
= ip_hdr(skb
);
2178 if (ip
->protocol
== IPPROTO_TCP
)
2179 td_ptr
->tdesc1
.TCR
|= TCR0_TCPCK
;
2180 else if (ip
->protocol
== IPPROTO_UDP
)
2181 td_ptr
->tdesc1
.TCR
|= (TCR0_UDPCK
);
2182 td_ptr
->tdesc1
.TCR
|= TCR0_IPCK
;
2186 int prev
= index
- 1;
2189 prev
= vptr
->options
.numtx
- 1;
2190 td_ptr
->tdesc0
.len
|= OWNED_BY_NIC
;
2191 vptr
->tx
.used
[qnum
]++;
2192 vptr
->tx
.curr
[qnum
] = (index
+ 1) % vptr
->options
.numtx
;
2194 if (AVAIL_TD(vptr
, qnum
) < 1)
2195 netif_stop_queue(dev
);
2197 td_ptr
= &(vptr
->tx
.rings
[qnum
][prev
]);
2198 td_ptr
->td_buf
[0].size
|= TD_QUEUE
;
2199 mac_tx_queue_wake(vptr
->mac_regs
, qnum
);
2201 dev
->trans_start
= jiffies
;
2202 spin_unlock_irqrestore(&vptr
->lock
, flags
);
2204 return NETDEV_TX_OK
;
2208 * velocity_intr - interrupt callback
2209 * @irq: interrupt number
2210 * @dev_instance: interrupting device
2212 * Called whenever an interrupt is generated by the velocity
2213 * adapter IRQ line. We may not be the source of the interrupt
2214 * and need to identify initially if we are, and if not exit as
2215 * efficiently as possible.
2218 static irqreturn_t
velocity_intr(int irq
, void *dev_instance
)
2220 struct net_device
*dev
= dev_instance
;
2221 struct velocity_info
*vptr
= netdev_priv(dev
);
2226 spin_lock(&vptr
->lock
);
2227 isr_status
= mac_read_isr(vptr
->mac_regs
);
2230 if (isr_status
== 0) {
2231 spin_unlock(&vptr
->lock
);
2235 mac_disable_int(vptr
->mac_regs
);
2238 * Keep processing the ISR until we have completed
2239 * processing and the isr_status becomes zero
2242 while (isr_status
!= 0) {
2243 mac_write_isr(vptr
->mac_regs
, isr_status
);
2244 if (isr_status
& (~(ISR_PRXI
| ISR_PPRXI
| ISR_PTXI
| ISR_PPTXI
)))
2245 velocity_error(vptr
, isr_status
);
2246 if (isr_status
& (ISR_PRXI
| ISR_PPRXI
))
2247 max_count
+= velocity_rx_srv(vptr
, isr_status
);
2248 if (isr_status
& (ISR_PTXI
| ISR_PPTXI
))
2249 max_count
+= velocity_tx_srv(vptr
, isr_status
);
2250 isr_status
= mac_read_isr(vptr
->mac_regs
);
2251 if (max_count
> vptr
->options
.int_works
)
2253 printk(KERN_WARNING
"%s: excessive work at interrupt.\n",
2258 spin_unlock(&vptr
->lock
);
2259 mac_enable_int(vptr
->mac_regs
);
2266 * velocity_set_multi - filter list change callback
2267 * @dev: network device
2269 * Called by the network layer when the filter lists need to change
2270 * for a velocity adapter. Reload the CAMs with the new address
2274 static void velocity_set_multi(struct net_device
*dev
)
2276 struct velocity_info
*vptr
= netdev_priv(dev
);
2277 struct mac_regs __iomem
* regs
= vptr
->mac_regs
;
2280 struct dev_mc_list
*mclist
;
2282 if (dev
->flags
& IFF_PROMISC
) { /* Set promiscuous. */
2283 writel(0xffffffff, ®s
->MARCAM
[0]);
2284 writel(0xffffffff, ®s
->MARCAM
[4]);
2285 rx_mode
= (RCR_AM
| RCR_AB
| RCR_PROM
);
2286 } else if ((dev
->mc_count
> vptr
->multicast_limit
)
2287 || (dev
->flags
& IFF_ALLMULTI
)) {
2288 writel(0xffffffff, ®s
->MARCAM
[0]);
2289 writel(0xffffffff, ®s
->MARCAM
[4]);
2290 rx_mode
= (RCR_AM
| RCR_AB
);
2292 int offset
= MCAM_SIZE
- vptr
->multicast_limit
;
2293 mac_get_cam_mask(regs
, vptr
->mCAMmask
);
2295 for (i
= 0, mclist
= dev
->mc_list
; mclist
&& i
< dev
->mc_count
; i
++, mclist
= mclist
->next
) {
2296 mac_set_cam(regs
, i
+ offset
, mclist
->dmi_addr
);
2297 vptr
->mCAMmask
[(offset
+ i
) / 8] |= 1 << ((offset
+ i
) & 7);
2300 mac_set_cam_mask(regs
, vptr
->mCAMmask
);
2301 rx_mode
= RCR_AM
| RCR_AB
| RCR_AP
;
2303 if (dev
->mtu
> 1500)
2306 BYTE_REG_BITS_ON(rx_mode
, ®s
->RCR
);
2311 * velocity_get_status - statistics callback
2312 * @dev: network device
2314 * Callback from the network layer to allow driver statistics
2315 * to be resynchronized with hardware collected state. In the
2316 * case of the velocity we need to pull the MIB counters from
2317 * the hardware into the counters before letting the network
2318 * layer display them.
2321 static struct net_device_stats
*velocity_get_stats(struct net_device
*dev
)
2323 struct velocity_info
*vptr
= netdev_priv(dev
);
2325 /* If the hardware is down, don't touch MII */
2326 if(!netif_running(dev
))
2327 return &vptr
->stats
;
2329 spin_lock_irq(&vptr
->lock
);
2330 velocity_update_hw_mibs(vptr
);
2331 spin_unlock_irq(&vptr
->lock
);
2333 vptr
->stats
.rx_packets
= vptr
->mib_counter
[HW_MIB_ifRxAllPkts
];
2334 vptr
->stats
.rx_errors
= vptr
->mib_counter
[HW_MIB_ifRxErrorPkts
];
2335 vptr
->stats
.rx_length_errors
= vptr
->mib_counter
[HW_MIB_ifInRangeLengthErrors
];
2337 // unsigned long rx_dropped; /* no space in linux buffers */
2338 vptr
->stats
.collisions
= vptr
->mib_counter
[HW_MIB_ifTxEtherCollisions
];
2339 /* detailed rx_errors: */
2340 // unsigned long rx_length_errors;
2341 // unsigned long rx_over_errors; /* receiver ring buff overflow */
2342 vptr
->stats
.rx_crc_errors
= vptr
->mib_counter
[HW_MIB_ifRxPktCRCE
];
2343 // unsigned long rx_frame_errors; /* recv'd frame alignment error */
2344 // unsigned long rx_fifo_errors; /* recv'r fifo overrun */
2345 // unsigned long rx_missed_errors; /* receiver missed packet */
2347 /* detailed tx_errors */
2348 // unsigned long tx_fifo_errors;
2350 return &vptr
->stats
;
2355 * velocity_ioctl - ioctl entry point
2356 * @dev: network device
2357 * @rq: interface request ioctl
2358 * @cmd: command code
2360 * Called when the user issues an ioctl request to the network
2361 * device in question. The velocity interface supports MII.
2364 static int velocity_ioctl(struct net_device
*dev
, struct ifreq
*rq
, int cmd
)
2366 struct velocity_info
*vptr
= netdev_priv(dev
);
2369 /* If we are asked for information and the device is power
2370 saving then we need to bring the device back up to talk to it */
2372 if (!netif_running(dev
))
2373 pci_set_power_state(vptr
->pdev
, PCI_D0
);
2376 case SIOCGMIIPHY
: /* Get address of MII PHY in use. */
2377 case SIOCGMIIREG
: /* Read MII PHY register. */
2378 case SIOCSMIIREG
: /* Write to MII PHY register. */
2379 ret
= velocity_mii_ioctl(dev
, rq
, cmd
);
2385 if (!netif_running(dev
))
2386 pci_set_power_state(vptr
->pdev
, PCI_D3hot
);
2393 * Definition for our device driver. The PCI layer interface
2394 * uses this to handle all our card discover and plugging
2397 static struct pci_driver velocity_driver
= {
2398 .name
= VELOCITY_NAME
,
2399 .id_table
= velocity_id_table
,
2400 .probe
= velocity_found1
,
2401 .remove
= __devexit_p(velocity_remove1
),
2403 .suspend
= velocity_suspend
,
2404 .resume
= velocity_resume
,
2409 * velocity_init_module - load time function
2411 * Called when the velocity module is loaded. The PCI driver
2412 * is registered with the PCI layer, and in turn will call
2413 * the probe functions for each velocity adapter installed
2417 static int __init
velocity_init_module(void)
2421 velocity_register_notifier();
2422 ret
= pci_register_driver(&velocity_driver
);
2424 velocity_unregister_notifier();
2429 * velocity_cleanup - module unload
2431 * When the velocity hardware is unloaded this function is called.
2432 * It will clean up the notifiers and the unregister the PCI
2433 * driver interface for this hardware. This in turn cleans up
2434 * all discovered interfaces before returning from the function
2437 static void __exit
velocity_cleanup_module(void)
2439 velocity_unregister_notifier();
2440 pci_unregister_driver(&velocity_driver
);
2443 module_init(velocity_init_module
);
2444 module_exit(velocity_cleanup_module
);
2448 * MII access , media link mode setting functions
2453 * mii_init - set up MII
2454 * @vptr: velocity adapter
2455 * @mii_status: links tatus
2457 * Set up the PHY for the current link state.
2460 static void mii_init(struct velocity_info
*vptr
, u32 mii_status
)
2464 switch (PHYID_GET_PHY_ID(vptr
->phy_id
)) {
2465 case PHYID_CICADA_CS8201
:
2467 * Reset to hardware default
2469 MII_REG_BITS_OFF((ANAR_ASMDIR
| ANAR_PAUSE
), MII_REG_ANAR
, vptr
->mac_regs
);
2471 * Turn on ECHODIS bit in NWay-forced full mode and turn it
2472 * off it in NWay-forced half mode for NWay-forced v.s.
2473 * legacy-forced issue.
2475 if (vptr
->mii_status
& VELOCITY_DUPLEX_FULL
)
2476 MII_REG_BITS_ON(TCSR_ECHODIS
, MII_REG_TCSR
, vptr
->mac_regs
);
2478 MII_REG_BITS_OFF(TCSR_ECHODIS
, MII_REG_TCSR
, vptr
->mac_regs
);
2480 * Turn on Link/Activity LED enable bit for CIS8201
2482 MII_REG_BITS_ON(PLED_LALBE
, MII_REG_PLED
, vptr
->mac_regs
);
2484 case PHYID_VT3216_32BIT
:
2485 case PHYID_VT3216_64BIT
:
2487 * Reset to hardware default
2489 MII_REG_BITS_ON((ANAR_ASMDIR
| ANAR_PAUSE
), MII_REG_ANAR
, vptr
->mac_regs
);
2491 * Turn on ECHODIS bit in NWay-forced full mode and turn it
2492 * off it in NWay-forced half mode for NWay-forced v.s.
2493 * legacy-forced issue
2495 if (vptr
->mii_status
& VELOCITY_DUPLEX_FULL
)
2496 MII_REG_BITS_ON(TCSR_ECHODIS
, MII_REG_TCSR
, vptr
->mac_regs
);
2498 MII_REG_BITS_OFF(TCSR_ECHODIS
, MII_REG_TCSR
, vptr
->mac_regs
);
2501 case PHYID_MARVELL_1000
:
2502 case PHYID_MARVELL_1000S
:
2504 * Assert CRS on Transmit
2506 MII_REG_BITS_ON(PSCR_ACRSTX
, MII_REG_PSCR
, vptr
->mac_regs
);
2508 * Reset to hardware default
2510 MII_REG_BITS_ON((ANAR_ASMDIR
| ANAR_PAUSE
), MII_REG_ANAR
, vptr
->mac_regs
);
2515 velocity_mii_read(vptr
->mac_regs
, MII_REG_BMCR
, &BMCR
);
2516 if (BMCR
& BMCR_ISO
) {
2518 velocity_mii_write(vptr
->mac_regs
, MII_REG_BMCR
, BMCR
);
2523 * safe_disable_mii_autopoll - autopoll off
2524 * @regs: velocity registers
2526 * Turn off the autopoll and wait for it to disable on the chip
2529 static void safe_disable_mii_autopoll(struct mac_regs __iomem
* regs
)
2533 /* turn off MAUTO */
2534 writeb(0, ®s
->MIICR
);
2535 for (ww
= 0; ww
< W_MAX_TIMEOUT
; ww
++) {
2537 if (BYTE_REG_BITS_IS_ON(MIISR_MIDLE
, ®s
->MIISR
))
2543 * enable_mii_autopoll - turn on autopolling
2544 * @regs: velocity registers
2546 * Enable the MII link status autopoll feature on the Velocity
2547 * hardware. Wait for it to enable.
2550 static void enable_mii_autopoll(struct mac_regs __iomem
* regs
)
2554 writeb(0, &(regs
->MIICR
));
2555 writeb(MIIADR_SWMPL
, ®s
->MIIADR
);
2557 for (ii
= 0; ii
< W_MAX_TIMEOUT
; ii
++) {
2559 if (BYTE_REG_BITS_IS_ON(MIISR_MIDLE
, ®s
->MIISR
))
2563 writeb(MIICR_MAUTO
, ®s
->MIICR
);
2565 for (ii
= 0; ii
< W_MAX_TIMEOUT
; ii
++) {
2567 if (!BYTE_REG_BITS_IS_ON(MIISR_MIDLE
, ®s
->MIISR
))
2574 * velocity_mii_read - read MII data
2575 * @regs: velocity registers
2576 * @index: MII register index
2577 * @data: buffer for received data
2579 * Perform a single read of an MII 16bit register. Returns zero
2580 * on success or -ETIMEDOUT if the PHY did not respond.
2583 static int velocity_mii_read(struct mac_regs __iomem
*regs
, u8 index
, u16
*data
)
2588 * Disable MIICR_MAUTO, so that mii addr can be set normally
2590 safe_disable_mii_autopoll(regs
);
2592 writeb(index
, ®s
->MIIADR
);
2594 BYTE_REG_BITS_ON(MIICR_RCMD
, ®s
->MIICR
);
2596 for (ww
= 0; ww
< W_MAX_TIMEOUT
; ww
++) {
2597 if (!(readb(®s
->MIICR
) & MIICR_RCMD
))
2601 *data
= readw(®s
->MIIDATA
);
2603 enable_mii_autopoll(regs
);
2604 if (ww
== W_MAX_TIMEOUT
)
2610 * velocity_mii_write - write MII data
2611 * @regs: velocity registers
2612 * @index: MII register index
2613 * @data: 16bit data for the MII register
2615 * Perform a single write to an MII 16bit register. Returns zero
2616 * on success or -ETIMEDOUT if the PHY did not respond.
2619 static int velocity_mii_write(struct mac_regs __iomem
*regs
, u8 mii_addr
, u16 data
)
2624 * Disable MIICR_MAUTO, so that mii addr can be set normally
2626 safe_disable_mii_autopoll(regs
);
2628 /* MII reg offset */
2629 writeb(mii_addr
, ®s
->MIIADR
);
2631 writew(data
, ®s
->MIIDATA
);
2633 /* turn on MIICR_WCMD */
2634 BYTE_REG_BITS_ON(MIICR_WCMD
, ®s
->MIICR
);
2636 /* W_MAX_TIMEOUT is the timeout period */
2637 for (ww
= 0; ww
< W_MAX_TIMEOUT
; ww
++) {
2639 if (!(readb(®s
->MIICR
) & MIICR_WCMD
))
2642 enable_mii_autopoll(regs
);
2644 if (ww
== W_MAX_TIMEOUT
)
2650 * velocity_get_opt_media_mode - get media selection
2651 * @vptr: velocity adapter
2653 * Get the media mode stored in EEPROM or module options and load
2654 * mii_status accordingly. The requested link state information
2658 static u32
velocity_get_opt_media_mode(struct velocity_info
*vptr
)
2662 switch (vptr
->options
.spd_dpx
) {
2664 status
= VELOCITY_AUTONEG_ENABLE
;
2666 case SPD_DPX_100_FULL
:
2667 status
= VELOCITY_SPEED_100
| VELOCITY_DUPLEX_FULL
;
2669 case SPD_DPX_10_FULL
:
2670 status
= VELOCITY_SPEED_10
| VELOCITY_DUPLEX_FULL
;
2672 case SPD_DPX_100_HALF
:
2673 status
= VELOCITY_SPEED_100
;
2675 case SPD_DPX_10_HALF
:
2676 status
= VELOCITY_SPEED_10
;
2679 vptr
->mii_status
= status
;
2684 * mii_set_auto_on - autonegotiate on
2687 * Enable autonegotation on this interface
2690 static void mii_set_auto_on(struct velocity_info
*vptr
)
2692 if (MII_REG_BITS_IS_ON(BMCR_AUTO
, MII_REG_BMCR
, vptr
->mac_regs
))
2693 MII_REG_BITS_ON(BMCR_REAUTO
, MII_REG_BMCR
, vptr
->mac_regs
);
2695 MII_REG_BITS_ON(BMCR_AUTO
, MII_REG_BMCR
, vptr
->mac_regs
);
2700 static void mii_set_auto_off(struct velocity_info * vptr)
2702 MII_REG_BITS_OFF(BMCR_AUTO, MII_REG_BMCR, vptr->mac_regs);
2707 * set_mii_flow_control - flow control setup
2708 * @vptr: velocity interface
2710 * Set up the flow control on this interface according to
2711 * the supplied user/eeprom options.
2714 static void set_mii_flow_control(struct velocity_info
*vptr
)
2716 /*Enable or Disable PAUSE in ANAR */
2717 switch (vptr
->options
.flow_cntl
) {
2719 MII_REG_BITS_OFF(ANAR_PAUSE
, MII_REG_ANAR
, vptr
->mac_regs
);
2720 MII_REG_BITS_ON(ANAR_ASMDIR
, MII_REG_ANAR
, vptr
->mac_regs
);
2724 MII_REG_BITS_ON(ANAR_PAUSE
, MII_REG_ANAR
, vptr
->mac_regs
);
2725 MII_REG_BITS_ON(ANAR_ASMDIR
, MII_REG_ANAR
, vptr
->mac_regs
);
2728 case FLOW_CNTL_TX_RX
:
2729 MII_REG_BITS_ON(ANAR_PAUSE
, MII_REG_ANAR
, vptr
->mac_regs
);
2730 MII_REG_BITS_ON(ANAR_ASMDIR
, MII_REG_ANAR
, vptr
->mac_regs
);
2733 case FLOW_CNTL_DISABLE
:
2734 MII_REG_BITS_OFF(ANAR_PAUSE
, MII_REG_ANAR
, vptr
->mac_regs
);
2735 MII_REG_BITS_OFF(ANAR_ASMDIR
, MII_REG_ANAR
, vptr
->mac_regs
);
2743 * velocity_set_media_mode - set media mode
2744 * @mii_status: old MII link state
2746 * Check the media link state and configure the flow control
2747 * PHY and also velocity hardware setup accordingly. In particular
2748 * we need to set up CD polling and frame bursting.
2751 static int velocity_set_media_mode(struct velocity_info
*vptr
, u32 mii_status
)
2754 struct mac_regs __iomem
* regs
= vptr
->mac_regs
;
2756 vptr
->mii_status
= mii_check_media_mode(vptr
->mac_regs
);
2757 curr_status
= vptr
->mii_status
& (~VELOCITY_LINK_FAIL
);
2759 /* Set mii link status */
2760 set_mii_flow_control(vptr
);
2763 Check if new status is consisent with current status
2764 if (((mii_status & curr_status) & VELOCITY_AUTONEG_ENABLE)
2765 || (mii_status==curr_status)) {
2766 vptr->mii_status=mii_check_media_mode(vptr->mac_regs);
2767 vptr->mii_status=check_connection_type(vptr->mac_regs);
2768 VELOCITY_PRT(MSG_LEVEL_INFO, "Velocity link no change\n");
2773 if (PHYID_GET_PHY_ID(vptr
->phy_id
) == PHYID_CICADA_CS8201
) {
2774 MII_REG_BITS_ON(AUXCR_MDPPS
, MII_REG_AUXCR
, vptr
->mac_regs
);
2778 * If connection type is AUTO
2780 if (mii_status
& VELOCITY_AUTONEG_ENABLE
) {
2781 VELOCITY_PRT(MSG_LEVEL_INFO
, "Velocity is AUTO mode\n");
2782 /* clear force MAC mode bit */
2783 BYTE_REG_BITS_OFF(CHIPGCR_FCMODE
, ®s
->CHIPGCR
);
2784 /* set duplex mode of MAC according to duplex mode of MII */
2785 MII_REG_BITS_ON(ANAR_TXFD
| ANAR_TX
| ANAR_10FD
| ANAR_10
, MII_REG_ANAR
, vptr
->mac_regs
);
2786 MII_REG_BITS_ON(G1000CR_1000FD
| G1000CR_1000
, MII_REG_G1000CR
, vptr
->mac_regs
);
2787 MII_REG_BITS_ON(BMCR_SPEED1G
, MII_REG_BMCR
, vptr
->mac_regs
);
2789 /* enable AUTO-NEGO mode */
2790 mii_set_auto_on(vptr
);
2796 * 1. if it's 3119, disable frame bursting in halfduplex mode
2797 * and enable it in fullduplex mode
2798 * 2. set correct MII/GMII and half/full duplex mode in CHIPGCR
2799 * 3. only enable CD heart beat counter in 10HD mode
2802 /* set force MAC mode bit */
2803 BYTE_REG_BITS_ON(CHIPGCR_FCMODE
, ®s
->CHIPGCR
);
2805 CHIPGCR
= readb(®s
->CHIPGCR
);
2806 CHIPGCR
&= ~CHIPGCR_FCGMII
;
2808 if (mii_status
& VELOCITY_DUPLEX_FULL
) {
2809 CHIPGCR
|= CHIPGCR_FCFDX
;
2810 writeb(CHIPGCR
, ®s
->CHIPGCR
);
2811 VELOCITY_PRT(MSG_LEVEL_INFO
, "set Velocity to forced full mode\n");
2812 if (vptr
->rev_id
< REV_ID_VT3216_A0
)
2813 BYTE_REG_BITS_OFF(TCR_TB2BDIS
, ®s
->TCR
);
2815 CHIPGCR
&= ~CHIPGCR_FCFDX
;
2816 VELOCITY_PRT(MSG_LEVEL_INFO
, "set Velocity to forced half mode\n");
2817 writeb(CHIPGCR
, ®s
->CHIPGCR
);
2818 if (vptr
->rev_id
< REV_ID_VT3216_A0
)
2819 BYTE_REG_BITS_ON(TCR_TB2BDIS
, ®s
->TCR
);
2822 MII_REG_BITS_OFF(G1000CR_1000FD
| G1000CR_1000
, MII_REG_G1000CR
, vptr
->mac_regs
);
2824 if (!(mii_status
& VELOCITY_DUPLEX_FULL
) && (mii_status
& VELOCITY_SPEED_10
)) {
2825 BYTE_REG_BITS_OFF(TESTCFG_HBDIS
, ®s
->TESTCFG
);
2827 BYTE_REG_BITS_ON(TESTCFG_HBDIS
, ®s
->TESTCFG
);
2829 /* MII_REG_BITS_OFF(BMCR_SPEED1G, MII_REG_BMCR, vptr->mac_regs); */
2830 velocity_mii_read(vptr
->mac_regs
, MII_REG_ANAR
, &ANAR
);
2831 ANAR
&= (~(ANAR_TXFD
| ANAR_TX
| ANAR_10FD
| ANAR_10
));
2832 if (mii_status
& VELOCITY_SPEED_100
) {
2833 if (mii_status
& VELOCITY_DUPLEX_FULL
)
2838 if (mii_status
& VELOCITY_DUPLEX_FULL
)
2843 velocity_mii_write(vptr
->mac_regs
, MII_REG_ANAR
, ANAR
);
2844 /* enable AUTO-NEGO mode */
2845 mii_set_auto_on(vptr
);
2846 /* MII_REG_BITS_ON(BMCR_AUTO, MII_REG_BMCR, vptr->mac_regs); */
2848 /* vptr->mii_status=mii_check_media_mode(vptr->mac_regs); */
2849 /* vptr->mii_status=check_connection_type(vptr->mac_regs); */
2850 return VELOCITY_LINK_CHANGE
;
2854 * mii_check_media_mode - check media state
2855 * @regs: velocity registers
2857 * Check the current MII status and determine the link status
2861 static u32
mii_check_media_mode(struct mac_regs __iomem
* regs
)
2866 if (!MII_REG_BITS_IS_ON(BMSR_LNK
, MII_REG_BMSR
, regs
))
2867 status
|= VELOCITY_LINK_FAIL
;
2869 if (MII_REG_BITS_IS_ON(G1000CR_1000FD
, MII_REG_G1000CR
, regs
))
2870 status
|= VELOCITY_SPEED_1000
| VELOCITY_DUPLEX_FULL
;
2871 else if (MII_REG_BITS_IS_ON(G1000CR_1000
, MII_REG_G1000CR
, regs
))
2872 status
|= (VELOCITY_SPEED_1000
);
2874 velocity_mii_read(regs
, MII_REG_ANAR
, &ANAR
);
2875 if (ANAR
& ANAR_TXFD
)
2876 status
|= (VELOCITY_SPEED_100
| VELOCITY_DUPLEX_FULL
);
2877 else if (ANAR
& ANAR_TX
)
2878 status
|= VELOCITY_SPEED_100
;
2879 else if (ANAR
& ANAR_10FD
)
2880 status
|= (VELOCITY_SPEED_10
| VELOCITY_DUPLEX_FULL
);
2882 status
|= (VELOCITY_SPEED_10
);
2885 if (MII_REG_BITS_IS_ON(BMCR_AUTO
, MII_REG_BMCR
, regs
)) {
2886 velocity_mii_read(regs
, MII_REG_ANAR
, &ANAR
);
2887 if ((ANAR
& (ANAR_TXFD
| ANAR_TX
| ANAR_10FD
| ANAR_10
))
2888 == (ANAR_TXFD
| ANAR_TX
| ANAR_10FD
| ANAR_10
)) {
2889 if (MII_REG_BITS_IS_ON(G1000CR_1000
| G1000CR_1000FD
, MII_REG_G1000CR
, regs
))
2890 status
|= VELOCITY_AUTONEG_ENABLE
;
2897 static u32
check_connection_type(struct mac_regs __iomem
* regs
)
2902 PHYSR0
= readb(®s
->PHYSR0
);
2905 if (!(PHYSR0 & PHYSR0_LINKGD))
2906 status|=VELOCITY_LINK_FAIL;
2909 if (PHYSR0
& PHYSR0_FDPX
)
2910 status
|= VELOCITY_DUPLEX_FULL
;
2912 if (PHYSR0
& PHYSR0_SPDG
)
2913 status
|= VELOCITY_SPEED_1000
;
2914 else if (PHYSR0
& PHYSR0_SPD10
)
2915 status
|= VELOCITY_SPEED_10
;
2917 status
|= VELOCITY_SPEED_100
;
2919 if (MII_REG_BITS_IS_ON(BMCR_AUTO
, MII_REG_BMCR
, regs
)) {
2920 velocity_mii_read(regs
, MII_REG_ANAR
, &ANAR
);
2921 if ((ANAR
& (ANAR_TXFD
| ANAR_TX
| ANAR_10FD
| ANAR_10
))
2922 == (ANAR_TXFD
| ANAR_TX
| ANAR_10FD
| ANAR_10
)) {
2923 if (MII_REG_BITS_IS_ON(G1000CR_1000
| G1000CR_1000FD
, MII_REG_G1000CR
, regs
))
2924 status
|= VELOCITY_AUTONEG_ENABLE
;
2932 * enable_flow_control_ability - flow control
2933 * @vptr: veloity to configure
2935 * Set up flow control according to the flow control options
2936 * determined by the eeprom/configuration.
2939 static void enable_flow_control_ability(struct velocity_info
*vptr
)
2942 struct mac_regs __iomem
* regs
= vptr
->mac_regs
;
2944 switch (vptr
->options
.flow_cntl
) {
2946 case FLOW_CNTL_DEFAULT
:
2947 if (BYTE_REG_BITS_IS_ON(PHYSR0_RXFLC
, ®s
->PHYSR0
))
2948 writel(CR0_FDXRFCEN
, ®s
->CR0Set
);
2950 writel(CR0_FDXRFCEN
, ®s
->CR0Clr
);
2952 if (BYTE_REG_BITS_IS_ON(PHYSR0_TXFLC
, ®s
->PHYSR0
))
2953 writel(CR0_FDXTFCEN
, ®s
->CR0Set
);
2955 writel(CR0_FDXTFCEN
, ®s
->CR0Clr
);
2959 writel(CR0_FDXTFCEN
, ®s
->CR0Set
);
2960 writel(CR0_FDXRFCEN
, ®s
->CR0Clr
);
2964 writel(CR0_FDXRFCEN
, ®s
->CR0Set
);
2965 writel(CR0_FDXTFCEN
, ®s
->CR0Clr
);
2968 case FLOW_CNTL_TX_RX
:
2969 writel(CR0_FDXTFCEN
, ®s
->CR0Set
);
2970 writel(CR0_FDXRFCEN
, ®s
->CR0Set
);
2973 case FLOW_CNTL_DISABLE
:
2974 writel(CR0_FDXRFCEN
, ®s
->CR0Clr
);
2975 writel(CR0_FDXTFCEN
, ®s
->CR0Clr
);
2986 * velocity_ethtool_up - pre hook for ethtool
2987 * @dev: network device
2989 * Called before an ethtool operation. We need to make sure the
2990 * chip is out of D3 state before we poke at it.
2993 static int velocity_ethtool_up(struct net_device
*dev
)
2995 struct velocity_info
*vptr
= netdev_priv(dev
);
2996 if (!netif_running(dev
))
2997 pci_set_power_state(vptr
->pdev
, PCI_D0
);
3002 * velocity_ethtool_down - post hook for ethtool
3003 * @dev: network device
3005 * Called after an ethtool operation. Restore the chip back to D3
3006 * state if it isn't running.
3009 static void velocity_ethtool_down(struct net_device
*dev
)
3011 struct velocity_info
*vptr
= netdev_priv(dev
);
3012 if (!netif_running(dev
))
3013 pci_set_power_state(vptr
->pdev
, PCI_D3hot
);
3016 static int velocity_get_settings(struct net_device
*dev
, struct ethtool_cmd
*cmd
)
3018 struct velocity_info
*vptr
= netdev_priv(dev
);
3019 struct mac_regs __iomem
* regs
= vptr
->mac_regs
;
3021 status
= check_connection_type(vptr
->mac_regs
);
3023 cmd
->supported
= SUPPORTED_TP
|
3025 SUPPORTED_10baseT_Half
|
3026 SUPPORTED_10baseT_Full
|
3027 SUPPORTED_100baseT_Half
|
3028 SUPPORTED_100baseT_Full
|
3029 SUPPORTED_1000baseT_Half
|
3030 SUPPORTED_1000baseT_Full
;
3031 if (status
& VELOCITY_SPEED_1000
)
3032 cmd
->speed
= SPEED_1000
;
3033 else if (status
& VELOCITY_SPEED_100
)
3034 cmd
->speed
= SPEED_100
;
3036 cmd
->speed
= SPEED_10
;
3037 cmd
->autoneg
= (status
& VELOCITY_AUTONEG_ENABLE
) ? AUTONEG_ENABLE
: AUTONEG_DISABLE
;
3038 cmd
->port
= PORT_TP
;
3039 cmd
->transceiver
= XCVR_INTERNAL
;
3040 cmd
->phy_address
= readb(®s
->MIIADR
) & 0x1F;
3042 if (status
& VELOCITY_DUPLEX_FULL
)
3043 cmd
->duplex
= DUPLEX_FULL
;
3045 cmd
->duplex
= DUPLEX_HALF
;
3050 static int velocity_set_settings(struct net_device
*dev
, struct ethtool_cmd
*cmd
)
3052 struct velocity_info
*vptr
= netdev_priv(dev
);
3057 curr_status
= check_connection_type(vptr
->mac_regs
);
3058 curr_status
&= (~VELOCITY_LINK_FAIL
);
3060 new_status
|= ((cmd
->autoneg
) ? VELOCITY_AUTONEG_ENABLE
: 0);
3061 new_status
|= ((cmd
->speed
== SPEED_100
) ? VELOCITY_SPEED_100
: 0);
3062 new_status
|= ((cmd
->speed
== SPEED_10
) ? VELOCITY_SPEED_10
: 0);
3063 new_status
|= ((cmd
->duplex
== DUPLEX_FULL
) ? VELOCITY_DUPLEX_FULL
: 0);
3065 if ((new_status
& VELOCITY_AUTONEG_ENABLE
) && (new_status
!= (curr_status
| VELOCITY_AUTONEG_ENABLE
)))
3068 velocity_set_media_mode(vptr
, new_status
);
3073 static u32
velocity_get_link(struct net_device
*dev
)
3075 struct velocity_info
*vptr
= netdev_priv(dev
);
3076 struct mac_regs __iomem
* regs
= vptr
->mac_regs
;
3077 return BYTE_REG_BITS_IS_ON(PHYSR0_LINKGD
, ®s
->PHYSR0
) ? 1 : 0;
3080 static void velocity_get_drvinfo(struct net_device
*dev
, struct ethtool_drvinfo
*info
)
3082 struct velocity_info
*vptr
= netdev_priv(dev
);
3083 strcpy(info
->driver
, VELOCITY_NAME
);
3084 strcpy(info
->version
, VELOCITY_VERSION
);
3085 strcpy(info
->bus_info
, pci_name(vptr
->pdev
));
3088 static void velocity_ethtool_get_wol(struct net_device
*dev
, struct ethtool_wolinfo
*wol
)
3090 struct velocity_info
*vptr
= netdev_priv(dev
);
3091 wol
->supported
= WAKE_PHY
| WAKE_MAGIC
| WAKE_UCAST
| WAKE_ARP
;
3092 wol
->wolopts
|= WAKE_MAGIC
;
3094 if (vptr->wol_opts & VELOCITY_WOL_PHY)
3095 wol.wolopts|=WAKE_PHY;
3097 if (vptr
->wol_opts
& VELOCITY_WOL_UCAST
)
3098 wol
->wolopts
|= WAKE_UCAST
;
3099 if (vptr
->wol_opts
& VELOCITY_WOL_ARP
)
3100 wol
->wolopts
|= WAKE_ARP
;
3101 memcpy(&wol
->sopass
, vptr
->wol_passwd
, 6);
3104 static int velocity_ethtool_set_wol(struct net_device
*dev
, struct ethtool_wolinfo
*wol
)
3106 struct velocity_info
*vptr
= netdev_priv(dev
);
3108 if (!(wol
->wolopts
& (WAKE_PHY
| WAKE_MAGIC
| WAKE_UCAST
| WAKE_ARP
)))
3110 vptr
->wol_opts
= VELOCITY_WOL_MAGIC
;
3113 if (wol.wolopts & WAKE_PHY) {
3114 vptr->wol_opts|=VELOCITY_WOL_PHY;
3115 vptr->flags |=VELOCITY_FLAGS_WOL_ENABLED;
3119 if (wol
->wolopts
& WAKE_MAGIC
) {
3120 vptr
->wol_opts
|= VELOCITY_WOL_MAGIC
;
3121 vptr
->flags
|= VELOCITY_FLAGS_WOL_ENABLED
;
3123 if (wol
->wolopts
& WAKE_UCAST
) {
3124 vptr
->wol_opts
|= VELOCITY_WOL_UCAST
;
3125 vptr
->flags
|= VELOCITY_FLAGS_WOL_ENABLED
;
3127 if (wol
->wolopts
& WAKE_ARP
) {
3128 vptr
->wol_opts
|= VELOCITY_WOL_ARP
;
3129 vptr
->flags
|= VELOCITY_FLAGS_WOL_ENABLED
;
3131 memcpy(vptr
->wol_passwd
, wol
->sopass
, 6);
3135 static u32
velocity_get_msglevel(struct net_device
*dev
)
3140 static void velocity_set_msglevel(struct net_device
*dev
, u32 value
)
3145 static const struct ethtool_ops velocity_ethtool_ops
= {
3146 .get_settings
= velocity_get_settings
,
3147 .set_settings
= velocity_set_settings
,
3148 .get_drvinfo
= velocity_get_drvinfo
,
3149 .get_wol
= velocity_ethtool_get_wol
,
3150 .set_wol
= velocity_ethtool_set_wol
,
3151 .get_msglevel
= velocity_get_msglevel
,
3152 .set_msglevel
= velocity_set_msglevel
,
3153 .get_link
= velocity_get_link
,
3154 .begin
= velocity_ethtool_up
,
3155 .complete
= velocity_ethtool_down
3159 * velocity_mii_ioctl - MII ioctl handler
3160 * @dev: network device
3161 * @ifr: the ifreq block for the ioctl
3164 * Process MII requests made via ioctl from the network layer. These
3165 * are used by tools like kudzu to interrogate the link state of the
3169 static int velocity_mii_ioctl(struct net_device
*dev
, struct ifreq
*ifr
, int cmd
)
3171 struct velocity_info
*vptr
= netdev_priv(dev
);
3172 struct mac_regs __iomem
* regs
= vptr
->mac_regs
;
3173 unsigned long flags
;
3174 struct mii_ioctl_data
*miidata
= if_mii(ifr
);
3179 miidata
->phy_id
= readb(®s
->MIIADR
) & 0x1f;
3182 if (!capable(CAP_NET_ADMIN
))
3184 if(velocity_mii_read(vptr
->mac_regs
, miidata
->reg_num
& 0x1f, &(miidata
->val_out
)) < 0)
3188 if (!capable(CAP_NET_ADMIN
))
3190 spin_lock_irqsave(&vptr
->lock
, flags
);
3191 err
= velocity_mii_write(vptr
->mac_regs
, miidata
->reg_num
& 0x1f, miidata
->val_in
);
3192 spin_unlock_irqrestore(&vptr
->lock
, flags
);
3193 check_connection_type(vptr
->mac_regs
);
3206 * velocity_save_context - save registers
3208 * @context: buffer for stored context
3210 * Retrieve the current configuration from the velocity hardware
3211 * and stash it in the context structure, for use by the context
3212 * restore functions. This allows us to save things we need across
3216 static void velocity_save_context(struct velocity_info
*vptr
, struct velocity_context
* context
)
3218 struct mac_regs __iomem
* regs
= vptr
->mac_regs
;
3220 u8 __iomem
*ptr
= (u8 __iomem
*)regs
;
3222 for (i
= MAC_REG_PAR
; i
< MAC_REG_CR0_CLR
; i
+= 4)
3223 *((u32
*) (context
->mac_reg
+ i
)) = readl(ptr
+ i
);
3225 for (i
= MAC_REG_MAR
; i
< MAC_REG_TDCSR_CLR
; i
+= 4)
3226 *((u32
*) (context
->mac_reg
+ i
)) = readl(ptr
+ i
);
3228 for (i
= MAC_REG_RDBASE_LO
; i
< MAC_REG_FIFO_TEST0
; i
+= 4)
3229 *((u32
*) (context
->mac_reg
+ i
)) = readl(ptr
+ i
);
3234 * velocity_restore_context - restore registers
3236 * @context: buffer for stored context
3238 * Reload the register configuration from the velocity context
3239 * created by velocity_save_context.
3242 static void velocity_restore_context(struct velocity_info
*vptr
, struct velocity_context
*context
)
3244 struct mac_regs __iomem
* regs
= vptr
->mac_regs
;
3246 u8 __iomem
*ptr
= (u8 __iomem
*)regs
;
3248 for (i
= MAC_REG_PAR
; i
< MAC_REG_CR0_SET
; i
+= 4) {
3249 writel(*((u32
*) (context
->mac_reg
+ i
)), ptr
+ i
);
3253 for (i
= MAC_REG_CR1_SET
; i
< MAC_REG_CR0_CLR
; i
++) {
3255 writeb(~(*((u8
*) (context
->mac_reg
+ i
))), ptr
+ i
+ 4);
3257 writeb(*((u8
*) (context
->mac_reg
+ i
)), ptr
+ i
);
3260 for (i
= MAC_REG_MAR
; i
< MAC_REG_IMR
; i
+= 4) {
3261 writel(*((u32
*) (context
->mac_reg
+ i
)), ptr
+ i
);
3264 for (i
= MAC_REG_RDBASE_LO
; i
< MAC_REG_FIFO_TEST0
; i
+= 4) {
3265 writel(*((u32
*) (context
->mac_reg
+ i
)), ptr
+ i
);
3268 for (i
= MAC_REG_TDCSR_SET
; i
<= MAC_REG_RDCSR_SET
; i
++) {
3269 writeb(*((u8
*) (context
->mac_reg
+ i
)), ptr
+ i
);
3275 * wol_calc_crc - WOL CRC
3276 * @pattern: data pattern
3277 * @mask_pattern: mask
3279 * Compute the wake on lan crc hashes for the packet header
3280 * we are interested in.
3283 static u16
wol_calc_crc(int size
, u8
* pattern
, u8
*mask_pattern
)
3289 for (i
= 0; i
< size
; i
++) {
3290 mask
= mask_pattern
[i
];
3292 /* Skip this loop if the mask equals to zero */
3296 for (j
= 0; j
< 8; j
++) {
3297 if ((mask
& 0x01) == 0) {
3302 crc
= crc_ccitt(crc
, &(pattern
[i
* 8 + j
]), 1);
3305 /* Finally, invert the result once to get the correct data */
3307 return bitrev32(crc
) >> 16;
3311 * velocity_set_wol - set up for wake on lan
3312 * @vptr: velocity to set WOL status on
3314 * Set a card up for wake on lan either by unicast or by
3317 * FIXME: check static buffer is safe here
3320 static int velocity_set_wol(struct velocity_info
*vptr
)
3322 struct mac_regs __iomem
* regs
= vptr
->mac_regs
;
3326 static u32 mask_pattern
[2][4] = {
3327 {0x00203000, 0x000003C0, 0x00000000, 0x0000000}, /* ARP */
3328 {0xfffff000, 0xffffffff, 0xffffffff, 0x000ffff} /* Magic Packet */
3331 writew(0xFFFF, ®s
->WOLCRClr
);
3332 writeb(WOLCFG_SAB
| WOLCFG_SAM
, ®s
->WOLCFGSet
);
3333 writew(WOLCR_MAGIC_EN
, ®s
->WOLCRSet
);
3336 if (vptr->wol_opts & VELOCITY_WOL_PHY)
3337 writew((WOLCR_LINKON_EN|WOLCR_LINKOFF_EN), ®s->WOLCRSet);
3340 if (vptr
->wol_opts
& VELOCITY_WOL_UCAST
) {
3341 writew(WOLCR_UNICAST_EN
, ®s
->WOLCRSet
);
3344 if (vptr
->wol_opts
& VELOCITY_WOL_ARP
) {
3345 struct arp_packet
*arp
= (struct arp_packet
*) buf
;
3347 memset(buf
, 0, sizeof(struct arp_packet
) + 7);
3349 for (i
= 0; i
< 4; i
++)
3350 writel(mask_pattern
[0][i
], ®s
->ByteMask
[0][i
]);
3352 arp
->type
= htons(ETH_P_ARP
);
3353 arp
->ar_op
= htons(1);
3355 memcpy(arp
->ar_tip
, vptr
->ip_addr
, 4);
3357 crc
= wol_calc_crc((sizeof(struct arp_packet
) + 7) / 8, buf
,
3358 (u8
*) & mask_pattern
[0][0]);
3360 writew(crc
, ®s
->PatternCRC
[0]);
3361 writew(WOLCR_ARP_EN
, ®s
->WOLCRSet
);
3364 BYTE_REG_BITS_ON(PWCFG_WOLTYPE
, ®s
->PWCFGSet
);
3365 BYTE_REG_BITS_ON(PWCFG_LEGACY_WOLEN
, ®s
->PWCFGSet
);
3367 writew(0x0FFF, ®s
->WOLSRClr
);
3369 if (vptr
->mii_status
& VELOCITY_AUTONEG_ENABLE
) {
3370 if (PHYID_GET_PHY_ID(vptr
->phy_id
) == PHYID_CICADA_CS8201
)
3371 MII_REG_BITS_ON(AUXCR_MDPPS
, MII_REG_AUXCR
, vptr
->mac_regs
);
3373 MII_REG_BITS_OFF(G1000CR_1000FD
| G1000CR_1000
, MII_REG_G1000CR
, vptr
->mac_regs
);
3376 if (vptr
->mii_status
& VELOCITY_SPEED_1000
)
3377 MII_REG_BITS_ON(BMCR_REAUTO
, MII_REG_BMCR
, vptr
->mac_regs
);
3379 BYTE_REG_BITS_ON(CHIPGCR_FCMODE
, ®s
->CHIPGCR
);
3383 GCR
= readb(®s
->CHIPGCR
);
3384 GCR
= (GCR
& ~CHIPGCR_FCGMII
) | CHIPGCR_FCFDX
;
3385 writeb(GCR
, ®s
->CHIPGCR
);
3388 BYTE_REG_BITS_OFF(ISR_PWEI
, ®s
->ISR
);
3389 /* Turn on SWPTAG just before entering power mode */
3390 BYTE_REG_BITS_ON(STICKHW_SWPTAG
, ®s
->STICKHW
);
3391 /* Go to bed ..... */
3392 BYTE_REG_BITS_ON((STICKHW_DS1
| STICKHW_DS0
), ®s
->STICKHW
);
3397 static int velocity_suspend(struct pci_dev
*pdev
, pm_message_t state
)
3399 struct net_device
*dev
= pci_get_drvdata(pdev
);
3400 struct velocity_info
*vptr
= netdev_priv(dev
);
3401 unsigned long flags
;
3403 if(!netif_running(vptr
->dev
))
3406 netif_device_detach(vptr
->dev
);
3408 spin_lock_irqsave(&vptr
->lock
, flags
);
3409 pci_save_state(pdev
);
3411 if (vptr
->flags
& VELOCITY_FLAGS_WOL_ENABLED
) {
3412 velocity_get_ip(vptr
);
3413 velocity_save_context(vptr
, &vptr
->context
);
3414 velocity_shutdown(vptr
);
3415 velocity_set_wol(vptr
);
3416 pci_enable_wake(pdev
, PCI_D3hot
, 1);
3417 pci_set_power_state(pdev
, PCI_D3hot
);
3419 velocity_save_context(vptr
, &vptr
->context
);
3420 velocity_shutdown(vptr
);
3421 pci_disable_device(pdev
);
3422 pci_set_power_state(pdev
, pci_choose_state(pdev
, state
));
3425 pci_set_power_state(pdev
, pci_choose_state(pdev
, state
));
3427 spin_unlock_irqrestore(&vptr
->lock
, flags
);
3431 static int velocity_resume(struct pci_dev
*pdev
)
3433 struct net_device
*dev
= pci_get_drvdata(pdev
);
3434 struct velocity_info
*vptr
= netdev_priv(dev
);
3435 unsigned long flags
;
3438 if(!netif_running(vptr
->dev
))
3441 pci_set_power_state(pdev
, PCI_D0
);
3442 pci_enable_wake(pdev
, 0, 0);
3443 pci_restore_state(pdev
);
3445 mac_wol_reset(vptr
->mac_regs
);
3447 spin_lock_irqsave(&vptr
->lock
, flags
);
3448 velocity_restore_context(vptr
, &vptr
->context
);
3449 velocity_init_registers(vptr
, VELOCITY_INIT_WOL
);
3450 mac_disable_int(vptr
->mac_regs
);
3452 velocity_tx_srv(vptr
, 0);
3454 for (i
= 0; i
< vptr
->tx
.numq
; i
++) {
3455 if (vptr
->tx
.used
[i
]) {
3456 mac_tx_queue_wake(vptr
->mac_regs
, i
);
3460 mac_enable_int(vptr
->mac_regs
);
3461 spin_unlock_irqrestore(&vptr
->lock
, flags
);
3462 netif_device_attach(vptr
->dev
);
3469 static int velocity_netdev_event(struct notifier_block
*nb
, unsigned long notification
, void *ptr
)
3471 struct in_ifaddr
*ifa
= (struct in_ifaddr
*) ptr
;
3472 struct net_device
*dev
= ifa
->ifa_dev
->dev
;
3473 struct velocity_info
*vptr
;
3474 unsigned long flags
;
3476 if (dev_net(dev
) != &init_net
)
3479 spin_lock_irqsave(&velocity_dev_list_lock
, flags
);
3480 list_for_each_entry(vptr
, &velocity_dev_list
, list
) {
3481 if (vptr
->dev
== dev
) {
3482 velocity_get_ip(vptr
);
3486 spin_unlock_irqrestore(&velocity_dev_list_lock
, flags
);