2 * Copyright(c) 2005 - 2006 Attansic Corporation. All rights reserved.
3 * Copyright(c) 2006 Chris Snook <csnook@redhat.com>
4 * Copyright(c) 2006 Jay Cliburn <jcliburn@gmail.com>
6 * Derived from Intel e1000 driver
7 * Copyright(c) 1999 - 2005 Intel Corporation. All rights reserved.
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License as published by the Free
11 * Software Foundation; either version 2 of the License, or (at your option)
14 * This program is distributed in the hope that it will be useful, but WITHOUT
15 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
16 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
19 * You should have received a copy of the GNU General Public License along with
20 * this program; if not, write to the Free Software Foundation, Inc., 59
21 * Temple Place - Suite 330, Boston, MA 02111-1307, USA.
23 * The full GNU General Public License is included in this distribution in the
24 * file called COPYING.
26 * Contact Information:
27 * Xiong Huang <xiong_huang@attansic.com>
28 * Attansic Technology Corp. 3F 147, Xianzheng 9th Road, Zhubei,
29 * Xinzhu 302, TAIWAN, REPUBLIC OF CHINA
31 * Chris Snook <csnook@redhat.com>
32 * Jay Cliburn <jcliburn@gmail.com>
34 * This version is adapted from the Attansic reference driver for
35 * inclusion in the Linux kernel. It is currently under heavy development.
36 * A very incomplete list of things that need to be dealt with:
39 * Fix TSO; tx performance is horrible with TSO enabled.
41 * Add more ethtool functions.
42 * Fix abstruse irq enable/disable condition described here:
43 * http://marc.theaimsgroup.com/?l=linux-netdev&m=116398508500553&w=2
49 * interrupt coalescing
53 #include <linux/types.h>
54 #include <linux/netdevice.h>
55 #include <linux/pci.h>
56 #include <linux/spinlock.h>
57 #include <linux/slab.h>
58 #include <linux/string.h>
59 #include <linux/skbuff.h>
60 #include <linux/etherdevice.h>
61 #include <linux/if_vlan.h>
62 #include <linux/irqreturn.h>
63 #include <linux/workqueue.h>
64 #include <linux/timer.h>
65 #include <linux/jiffies.h>
66 #include <linux/hardirq.h>
67 #include <linux/interrupt.h>
68 #include <linux/irqflags.h>
69 #include <linux/dma-mapping.h>
70 #include <linux/net.h>
74 #include <linux/tcp.h>
75 #include <linux/compiler.h>
76 #include <linux/delay.h>
77 #include <linux/mii.h>
78 #include <net/checksum.h>
80 #include <asm/atomic.h>
81 #include <asm/byteorder.h>
85 #define DRIVER_VERSION "2.0.7"
87 char atl1_driver_name[] = "atl1";
88 static const char atl1_driver_string[] = "Attansic L1 Ethernet Network Driver";
89 static const char atl1_copyright[] = "Copyright(c) 2005-2006 Attansic Corporation.";
90 char atl1_driver_version[] = DRIVER_VERSION;
93 ("Attansic Corporation <xiong_huang@attansic.com>, Chris Snook <csnook@redhat.com>, Jay Cliburn <jcliburn@gmail.com>");
94 MODULE_DESCRIPTION("Attansic 1000M Ethernet Network Driver");
95 MODULE_LICENSE("GPL");
96 MODULE_VERSION(DRIVER_VERSION);
99 * atl1_pci_tbl - PCI Device ID Table
101 static const struct pci_device_id atl1_pci_tbl[] = {
102 {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC, PCI_DEVICE_ID_ATTANSIC_L1)},
103 /* required last entry */
107 MODULE_DEVICE_TABLE(pci, atl1_pci_tbl);
110 * atl1_sw_init - Initialize general software structures (struct atl1_adapter)
111 * @adapter: board private structure to initialize
113 * atl1_sw_init initializes the Adapter private data structure.
114 * Fields are initialized based on PCI device information and
115 * OS network device settings (MTU size).
117 static int __devinit atl1_sw_init(struct atl1_adapter *adapter)
119 struct atl1_hw *hw = &adapter->hw;
120 struct net_device *netdev = adapter->netdev;
122 hw->max_frame_size = netdev->mtu + ENET_HEADER_SIZE + ETHERNET_FCS_SIZE;
123 hw->min_frame_size = MINIMUM_ETHERNET_FRAME_SIZE;
126 adapter->rx_buffer_len = (hw->max_frame_size + 7) & ~7;
127 adapter->ict = 50000; /* 100ms */
128 adapter->link_speed = SPEED_0; /* hardware init */
129 adapter->link_duplex = FULL_DUPLEX;
131 hw->phy_configured = false;
132 hw->preamble_len = 7;
142 hw->rfd_fetch_gap = 1;
143 hw->rx_jumbo_th = adapter->rx_buffer_len / 8;
144 hw->rx_jumbo_lkah = 1;
145 hw->rrd_ret_timer = 16;
147 hw->tpd_fetch_th = 16;
148 hw->txf_burst = 0x100;
149 hw->tx_jumbo_task_th = (hw->max_frame_size + 7) >> 3;
150 hw->tpd_fetch_gap = 1;
151 hw->rcb_value = atl1_rcb_64;
152 hw->dma_ord = atl1_dma_ord_enh;
153 hw->dmar_block = atl1_dma_req_256;
154 hw->dmaw_block = atl1_dma_req_256;
157 hw->cmb_rx_timer = 1; /* about 2us */
158 hw->cmb_tx_timer = 1; /* about 2us */
159 hw->smb_timer = 100000; /* about 200ms */
161 spin_lock_init(&adapter->lock);
162 spin_lock_init(&adapter->mb_lock);
167 static int mdio_read(struct net_device *netdev, int phy_id, int reg_num)
169 struct atl1_adapter *adapter = netdev_priv(netdev);
172 atl1_read_phy_reg(&adapter->hw, reg_num & 0x1f, &result);
177 static void mdio_write(struct net_device *netdev, int phy_id, int reg_num,
180 struct atl1_adapter *adapter = netdev_priv(netdev);
182 atl1_write_phy_reg(&adapter->hw, reg_num, val);
191 static int atl1_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
193 struct atl1_adapter *adapter = netdev_priv(netdev);
197 if (!netif_running(netdev))
200 spin_lock_irqsave(&adapter->lock, flags);
201 retval = generic_mii_ioctl(&adapter->mii, if_mii(ifr), cmd, NULL);
202 spin_unlock_irqrestore(&adapter->lock, flags);
213 static int atl1_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
219 return atl1_mii_ioctl(netdev, ifr, cmd);
226 * atl1_setup_mem_resources - allocate Tx / RX descriptor resources
227 * @adapter: board private structure
229 * Return 0 on success, negative on failure
231 s32 atl1_setup_ring_resources(struct atl1_adapter *adapter)
233 struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring;
234 struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring;
235 struct atl1_rrd_ring *rrd_ring = &adapter->rrd_ring;
236 struct atl1_ring_header *ring_header = &adapter->ring_header;
237 struct pci_dev *pdev = adapter->pdev;
241 size = sizeof(struct atl1_buffer) * (tpd_ring->count + rfd_ring->count);
242 tpd_ring->buffer_info = kzalloc(size, GFP_KERNEL);
243 if (unlikely(!tpd_ring->buffer_info)) {
244 dev_err(&pdev->dev, "kzalloc failed , size = D%d\n", size);
247 rfd_ring->buffer_info =
248 (struct atl1_buffer *)(tpd_ring->buffer_info + tpd_ring->count);
250 /* real ring DMA buffer
251 * each ring/block may need up to 8 bytes for alignment, hence the
252 * additional 40 bytes tacked onto the end.
254 ring_header->size = size =
255 sizeof(struct tx_packet_desc) * tpd_ring->count
256 + sizeof(struct rx_free_desc) * rfd_ring->count
257 + sizeof(struct rx_return_desc) * rrd_ring->count
258 + sizeof(struct coals_msg_block)
259 + sizeof(struct stats_msg_block)
262 ring_header->desc = pci_alloc_consistent(pdev, ring_header->size,
264 if (unlikely(!ring_header->desc)) {
265 dev_err(&pdev->dev, "pci_alloc_consistent failed\n");
269 memset(ring_header->desc, 0, ring_header->size);
272 tpd_ring->dma = ring_header->dma;
273 offset = (tpd_ring->dma & 0x7) ? (8 - (ring_header->dma & 0x7)) : 0;
274 tpd_ring->dma += offset;
275 tpd_ring->desc = (u8 *) ring_header->desc + offset;
276 tpd_ring->size = sizeof(struct tx_packet_desc) * tpd_ring->count;
279 rfd_ring->dma = tpd_ring->dma + tpd_ring->size;
280 offset = (rfd_ring->dma & 0x7) ? (8 - (rfd_ring->dma & 0x7)) : 0;
281 rfd_ring->dma += offset;
282 rfd_ring->desc = (u8 *) tpd_ring->desc + (tpd_ring->size + offset);
283 rfd_ring->size = sizeof(struct rx_free_desc) * rfd_ring->count;
287 rrd_ring->dma = rfd_ring->dma + rfd_ring->size;
288 offset = (rrd_ring->dma & 0x7) ? (8 - (rrd_ring->dma & 0x7)) : 0;
289 rrd_ring->dma += offset;
290 rrd_ring->desc = (u8 *) rfd_ring->desc + (rfd_ring->size + offset);
291 rrd_ring->size = sizeof(struct rx_return_desc) * rrd_ring->count;
295 adapter->cmb.dma = rrd_ring->dma + rrd_ring->size;
296 offset = (adapter->cmb.dma & 0x7) ? (8 - (adapter->cmb.dma & 0x7)) : 0;
297 adapter->cmb.dma += offset;
298 adapter->cmb.cmb = (struct coals_msg_block *)
299 ((u8 *) rrd_ring->desc + (rrd_ring->size + offset));
302 adapter->smb.dma = adapter->cmb.dma + sizeof(struct coals_msg_block);
303 offset = (adapter->smb.dma & 0x7) ? (8 - (adapter->smb.dma & 0x7)) : 0;
304 adapter->smb.dma += offset;
305 adapter->smb.smb = (struct stats_msg_block *)
306 ((u8 *) adapter->cmb.cmb +
307 (sizeof(struct coals_msg_block) + offset));
312 kfree(tpd_ring->buffer_info);
316 void atl1_init_ring_ptrs(struct atl1_adapter *adapter)
318 struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring;
319 struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring;
320 struct atl1_rrd_ring *rrd_ring = &adapter->rrd_ring;
322 atomic_set(&tpd_ring->next_to_use, 0);
323 atomic_set(&tpd_ring->next_to_clean, 0);
325 rfd_ring->next_to_clean = 0;
326 atomic_set(&rfd_ring->next_to_use, 0);
328 rrd_ring->next_to_use = 0;
329 atomic_set(&rrd_ring->next_to_clean, 0);
333 * atl1_clean_rx_ring - Free RFD Buffers
334 * @adapter: board private structure
336 static void atl1_clean_rx_ring(struct atl1_adapter *adapter)
338 struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring;
339 struct atl1_rrd_ring *rrd_ring = &adapter->rrd_ring;
340 struct atl1_buffer *buffer_info;
341 struct pci_dev *pdev = adapter->pdev;
345 /* Free all the Rx ring sk_buffs */
346 for (i = 0; i < rfd_ring->count; i++) {
347 buffer_info = &rfd_ring->buffer_info[i];
348 if (buffer_info->dma) {
349 pci_unmap_page(pdev, buffer_info->dma,
350 buffer_info->length, PCI_DMA_FROMDEVICE);
351 buffer_info->dma = 0;
353 if (buffer_info->skb) {
354 dev_kfree_skb(buffer_info->skb);
355 buffer_info->skb = NULL;
359 size = sizeof(struct atl1_buffer) * rfd_ring->count;
360 memset(rfd_ring->buffer_info, 0, size);
362 /* Zero out the descriptor ring */
363 memset(rfd_ring->desc, 0, rfd_ring->size);
365 rfd_ring->next_to_clean = 0;
366 atomic_set(&rfd_ring->next_to_use, 0);
368 rrd_ring->next_to_use = 0;
369 atomic_set(&rrd_ring->next_to_clean, 0);
373 * atl1_clean_tx_ring - Free Tx Buffers
374 * @adapter: board private structure
376 static void atl1_clean_tx_ring(struct atl1_adapter *adapter)
378 struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring;
379 struct atl1_buffer *buffer_info;
380 struct pci_dev *pdev = adapter->pdev;
384 /* Free all the Tx ring sk_buffs */
385 for (i = 0; i < tpd_ring->count; i++) {
386 buffer_info = &tpd_ring->buffer_info[i];
387 if (buffer_info->dma) {
388 pci_unmap_page(pdev, buffer_info->dma,
389 buffer_info->length, PCI_DMA_TODEVICE);
390 buffer_info->dma = 0;
394 for (i = 0; i < tpd_ring->count; i++) {
395 buffer_info = &tpd_ring->buffer_info[i];
396 if (buffer_info->skb) {
397 dev_kfree_skb_any(buffer_info->skb);
398 buffer_info->skb = NULL;
402 size = sizeof(struct atl1_buffer) * tpd_ring->count;
403 memset(tpd_ring->buffer_info, 0, size);
405 /* Zero out the descriptor ring */
406 memset(tpd_ring->desc, 0, tpd_ring->size);
408 atomic_set(&tpd_ring->next_to_use, 0);
409 atomic_set(&tpd_ring->next_to_clean, 0);
413 * atl1_free_ring_resources - Free Tx / RX descriptor Resources
414 * @adapter: board private structure
416 * Free all transmit software resources
418 void atl1_free_ring_resources(struct atl1_adapter *adapter)
420 struct pci_dev *pdev = adapter->pdev;
421 struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring;
422 struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring;
423 struct atl1_rrd_ring *rrd_ring = &adapter->rrd_ring;
424 struct atl1_ring_header *ring_header = &adapter->ring_header;
426 atl1_clean_tx_ring(adapter);
427 atl1_clean_rx_ring(adapter);
429 kfree(tpd_ring->buffer_info);
430 pci_free_consistent(pdev, ring_header->size, ring_header->desc,
433 tpd_ring->buffer_info = NULL;
434 tpd_ring->desc = NULL;
437 rfd_ring->buffer_info = NULL;
438 rfd_ring->desc = NULL;
441 rrd_ring->desc = NULL;
445 static void atl1_setup_mac_ctrl(struct atl1_adapter *adapter)
448 struct atl1_hw *hw = &adapter->hw;
449 struct net_device *netdev = adapter->netdev;
450 /* Config MAC CTRL Register */
451 value = MAC_CTRL_TX_EN | MAC_CTRL_RX_EN;
453 if (FULL_DUPLEX == adapter->link_duplex)
454 value |= MAC_CTRL_DUPLX;
456 value |= ((u32) ((SPEED_1000 == adapter->link_speed) ?
457 MAC_CTRL_SPEED_1000 : MAC_CTRL_SPEED_10_100) <<
458 MAC_CTRL_SPEED_SHIFT);
460 value |= (MAC_CTRL_TX_FLOW | MAC_CTRL_RX_FLOW);
462 value |= (MAC_CTRL_ADD_CRC | MAC_CTRL_PAD);
463 /* preamble length */
464 value |= (((u32) adapter->hw.preamble_len
465 & MAC_CTRL_PRMLEN_MASK) << MAC_CTRL_PRMLEN_SHIFT);
468 value |= MAC_CTRL_RMV_VLAN;
470 if (adapter->rx_csum)
471 value |= MAC_CTRL_RX_CHKSUM_EN;
474 value |= MAC_CTRL_BC_EN;
475 if (netdev->flags & IFF_PROMISC)
476 value |= MAC_CTRL_PROMIS_EN;
477 else if (netdev->flags & IFF_ALLMULTI)
478 value |= MAC_CTRL_MC_ALL_EN;
479 /* value |= MAC_CTRL_LOOPBACK; */
480 iowrite32(value, hw->hw_addr + REG_MAC_CTRL);
484 * atl1_set_mac - Change the Ethernet Address of the NIC
485 * @netdev: network interface device structure
486 * @p: pointer to an address structure
488 * Returns 0 on success, negative on failure
490 static int atl1_set_mac(struct net_device *netdev, void *p)
492 struct atl1_adapter *adapter = netdev_priv(netdev);
493 struct sockaddr *addr = p;
495 if (netif_running(netdev))
498 if (!is_valid_ether_addr(addr->sa_data))
499 return -EADDRNOTAVAIL;
501 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
502 memcpy(adapter->hw.mac_addr, addr->sa_data, netdev->addr_len);
504 atl1_set_mac_addr(&adapter->hw);
508 static u32 atl1_check_link(struct atl1_adapter *adapter)
510 struct atl1_hw *hw = &adapter->hw;
511 struct net_device *netdev = adapter->netdev;
513 u16 speed, duplex, phy_data;
516 /* MII_BMSR must read twice */
517 atl1_read_phy_reg(hw, MII_BMSR, &phy_data);
518 atl1_read_phy_reg(hw, MII_BMSR, &phy_data);
519 if (!(phy_data & BMSR_LSTATUS)) { /* link down */
520 if (netif_carrier_ok(netdev)) { /* old link state: Up */
521 dev_info(&adapter->pdev->dev, "link is down\n");
522 adapter->link_speed = SPEED_0;
523 netif_carrier_off(netdev);
524 netif_stop_queue(netdev);
530 ret_val = atl1_get_speed_and_duplex(hw, &speed, &duplex);
534 switch (hw->media_type) {
535 case MEDIA_TYPE_1000M_FULL:
536 if (speed != SPEED_1000 || duplex != FULL_DUPLEX)
539 case MEDIA_TYPE_100M_FULL:
540 if (speed != SPEED_100 || duplex != FULL_DUPLEX)
543 case MEDIA_TYPE_100M_HALF:
544 if (speed != SPEED_100 || duplex != HALF_DUPLEX)
547 case MEDIA_TYPE_10M_FULL:
548 if (speed != SPEED_10 || duplex != FULL_DUPLEX)
551 case MEDIA_TYPE_10M_HALF:
552 if (speed != SPEED_10 || duplex != HALF_DUPLEX)
557 /* link result is our setting */
559 if (adapter->link_speed != speed
560 || adapter->link_duplex != duplex) {
561 adapter->link_speed = speed;
562 adapter->link_duplex = duplex;
563 atl1_setup_mac_ctrl(adapter);
564 dev_info(&adapter->pdev->dev,
565 "%s link is up %d Mbps %s\n",
566 netdev->name, adapter->link_speed,
567 adapter->link_duplex == FULL_DUPLEX ?
568 "full duplex" : "half duplex");
570 if (!netif_carrier_ok(netdev)) { /* Link down -> Up */
571 netif_carrier_on(netdev);
572 netif_wake_queue(netdev);
577 /* change orignal link status */
578 if (netif_carrier_ok(netdev)) {
579 adapter->link_speed = SPEED_0;
580 netif_carrier_off(netdev);
581 netif_stop_queue(netdev);
584 if (hw->media_type != MEDIA_TYPE_AUTO_SENSOR &&
585 hw->media_type != MEDIA_TYPE_1000M_FULL) {
586 switch (hw->media_type) {
587 case MEDIA_TYPE_100M_FULL:
588 phy_data = MII_CR_FULL_DUPLEX | MII_CR_SPEED_100 |
591 case MEDIA_TYPE_100M_HALF:
592 phy_data = MII_CR_SPEED_100 | MII_CR_RESET;
594 case MEDIA_TYPE_10M_FULL:
596 MII_CR_FULL_DUPLEX | MII_CR_SPEED_10 | MII_CR_RESET;
598 default: /* MEDIA_TYPE_10M_HALF: */
599 phy_data = MII_CR_SPEED_10 | MII_CR_RESET;
602 atl1_write_phy_reg(hw, MII_BMCR, phy_data);
606 /* auto-neg, insert timer to re-config phy */
607 if (!adapter->phy_timer_pending) {
608 adapter->phy_timer_pending = true;
609 mod_timer(&adapter->phy_config_timer, jiffies + 3 * HZ);
615 static void atl1_check_for_link(struct atl1_adapter *adapter)
617 struct net_device *netdev = adapter->netdev;
620 spin_lock(&adapter->lock);
621 adapter->phy_timer_pending = false;
622 atl1_read_phy_reg(&adapter->hw, MII_BMSR, &phy_data);
623 atl1_read_phy_reg(&adapter->hw, MII_BMSR, &phy_data);
624 spin_unlock(&adapter->lock);
626 /* notify upper layer link down ASAP */
627 if (!(phy_data & BMSR_LSTATUS)) { /* Link Down */
628 if (netif_carrier_ok(netdev)) { /* old link state: Up */
629 dev_info(&adapter->pdev->dev, "%s link is down\n",
631 adapter->link_speed = SPEED_0;
632 netif_carrier_off(netdev);
633 netif_stop_queue(netdev);
636 schedule_work(&adapter->link_chg_task);
640 * atl1_set_multi - Multicast and Promiscuous mode set
641 * @netdev: network interface device structure
643 * The set_multi entry point is called whenever the multicast address
644 * list or the network interface flags are updated. This routine is
645 * responsible for configuring the hardware for proper multicast,
646 * promiscuous mode, and all-multi behavior.
648 static void atl1_set_multi(struct net_device *netdev)
650 struct atl1_adapter *adapter = netdev_priv(netdev);
651 struct atl1_hw *hw = &adapter->hw;
652 struct dev_mc_list *mc_ptr;
656 /* Check for Promiscuous and All Multicast modes */
657 rctl = ioread32(hw->hw_addr + REG_MAC_CTRL);
658 if (netdev->flags & IFF_PROMISC)
659 rctl |= MAC_CTRL_PROMIS_EN;
660 else if (netdev->flags & IFF_ALLMULTI) {
661 rctl |= MAC_CTRL_MC_ALL_EN;
662 rctl &= ~MAC_CTRL_PROMIS_EN;
664 rctl &= ~(MAC_CTRL_PROMIS_EN | MAC_CTRL_MC_ALL_EN);
666 iowrite32(rctl, hw->hw_addr + REG_MAC_CTRL);
668 /* clear the old settings from the multicast hash table */
669 iowrite32(0, hw->hw_addr + REG_RX_HASH_TABLE);
670 iowrite32(0, (hw->hw_addr + REG_RX_HASH_TABLE) + (1 << 2));
672 /* compute mc addresses' hash value ,and put it into hash table */
673 for (mc_ptr = netdev->mc_list; mc_ptr; mc_ptr = mc_ptr->next) {
674 hash_value = atl1_hash_mc_addr(hw, mc_ptr->dmi_addr);
675 atl1_hash_set(hw, hash_value);
680 * atl1_change_mtu - Change the Maximum Transfer Unit
681 * @netdev: network interface device structure
682 * @new_mtu: new value for maximum frame size
684 * Returns 0 on success, negative on failure
686 static int atl1_change_mtu(struct net_device *netdev, int new_mtu)
688 struct atl1_adapter *adapter = netdev_priv(netdev);
689 int old_mtu = netdev->mtu;
690 int max_frame = new_mtu + ENET_HEADER_SIZE + ETHERNET_FCS_SIZE;
692 if ((max_frame < MINIMUM_ETHERNET_FRAME_SIZE) ||
693 (max_frame > MAX_JUMBO_FRAME_SIZE)) {
694 dev_warn(&adapter->pdev->dev, "invalid MTU setting\n");
698 adapter->hw.max_frame_size = max_frame;
699 adapter->hw.tx_jumbo_task_th = (max_frame + 7) >> 3;
700 adapter->rx_buffer_len = (max_frame + 7) & ~7;
701 adapter->hw.rx_jumbo_th = adapter->rx_buffer_len / 8;
703 netdev->mtu = new_mtu;
704 if ((old_mtu != new_mtu) && netif_running(netdev)) {
712 static void set_flow_ctrl_old(struct atl1_adapter *adapter)
716 /* RFD Flow Control */
717 value = adapter->rfd_ring.count;
723 value = ((hi & RXQ_RXF_PAUSE_TH_HI_MASK) << RXQ_RXF_PAUSE_TH_HI_SHIFT) |
724 ((lo & RXQ_RXF_PAUSE_TH_LO_MASK) << RXQ_RXF_PAUSE_TH_LO_SHIFT);
725 iowrite32(value, adapter->hw.hw_addr + REG_RXQ_RXF_PAUSE_THRESH);
727 /* RRD Flow Control */
728 value = adapter->rrd_ring.count;
733 value = ((hi & RXQ_RRD_PAUSE_TH_HI_MASK) << RXQ_RRD_PAUSE_TH_HI_SHIFT) |
734 ((lo & RXQ_RRD_PAUSE_TH_LO_MASK) << RXQ_RRD_PAUSE_TH_LO_SHIFT);
735 iowrite32(value, adapter->hw.hw_addr + REG_RXQ_RRD_PAUSE_THRESH);
738 static void set_flow_ctrl_new(struct atl1_hw *hw)
742 /* RXF Flow Control */
743 value = ioread32(hw->hw_addr + REG_SRAM_RXF_LEN);
750 value = ((hi & RXQ_RXF_PAUSE_TH_HI_MASK) << RXQ_RXF_PAUSE_TH_HI_SHIFT) |
751 ((lo & RXQ_RXF_PAUSE_TH_LO_MASK) << RXQ_RXF_PAUSE_TH_LO_SHIFT);
752 iowrite32(value, hw->hw_addr + REG_RXQ_RXF_PAUSE_THRESH);
754 /* RRD Flow Control */
755 value = ioread32(hw->hw_addr + REG_SRAM_RRD_LEN);
762 value = ((hi & RXQ_RRD_PAUSE_TH_HI_MASK) << RXQ_RRD_PAUSE_TH_HI_SHIFT) |
763 ((lo & RXQ_RRD_PAUSE_TH_LO_MASK) << RXQ_RRD_PAUSE_TH_LO_SHIFT);
764 iowrite32(value, hw->hw_addr + REG_RXQ_RRD_PAUSE_THRESH);
768 * atl1_configure - Configure Transmit&Receive Unit after Reset
769 * @adapter: board private structure
771 * Configure the Tx /Rx unit of the MAC after a reset.
773 static u32 atl1_configure(struct atl1_adapter *adapter)
775 struct atl1_hw *hw = &adapter->hw;
778 /* clear interrupt status */
779 iowrite32(0xffffffff, adapter->hw.hw_addr + REG_ISR);
781 /* set MAC Address */
782 value = (((u32) hw->mac_addr[2]) << 24) |
783 (((u32) hw->mac_addr[3]) << 16) |
784 (((u32) hw->mac_addr[4]) << 8) |
785 (((u32) hw->mac_addr[5]));
786 iowrite32(value, hw->hw_addr + REG_MAC_STA_ADDR);
787 value = (((u32) hw->mac_addr[0]) << 8) | (((u32) hw->mac_addr[1]));
788 iowrite32(value, hw->hw_addr + (REG_MAC_STA_ADDR + 4));
792 /* HI base address */
793 iowrite32((u32) ((adapter->tpd_ring.dma & 0xffffffff00000000ULL) >> 32),
794 hw->hw_addr + REG_DESC_BASE_ADDR_HI);
795 /* LO base address */
796 iowrite32((u32) (adapter->rfd_ring.dma & 0x00000000ffffffffULL),
797 hw->hw_addr + REG_DESC_RFD_ADDR_LO);
798 iowrite32((u32) (adapter->rrd_ring.dma & 0x00000000ffffffffULL),
799 hw->hw_addr + REG_DESC_RRD_ADDR_LO);
800 iowrite32((u32) (adapter->tpd_ring.dma & 0x00000000ffffffffULL),
801 hw->hw_addr + REG_DESC_TPD_ADDR_LO);
802 iowrite32((u32) (adapter->cmb.dma & 0x00000000ffffffffULL),
803 hw->hw_addr + REG_DESC_CMB_ADDR_LO);
804 iowrite32((u32) (adapter->smb.dma & 0x00000000ffffffffULL),
805 hw->hw_addr + REG_DESC_SMB_ADDR_LO);
808 value = adapter->rrd_ring.count;
810 value += adapter->rfd_ring.count;
811 iowrite32(value, hw->hw_addr + REG_DESC_RFD_RRD_RING_SIZE);
812 iowrite32(adapter->tpd_ring.count, hw->hw_addr +
813 REG_DESC_TPD_RING_SIZE);
816 iowrite32(1, hw->hw_addr + REG_LOAD_PTR);
819 value = ((atomic_read(&adapter->tpd_ring.next_to_use)
820 & MB_TPD_PROD_INDX_MASK) << MB_TPD_PROD_INDX_SHIFT) |
821 ((atomic_read(&adapter->rrd_ring.next_to_clean)
822 & MB_RRD_CONS_INDX_MASK) << MB_RRD_CONS_INDX_SHIFT) |
823 ((atomic_read(&adapter->rfd_ring.next_to_use)
824 & MB_RFD_PROD_INDX_MASK) << MB_RFD_PROD_INDX_SHIFT);
825 iowrite32(value, hw->hw_addr + REG_MAILBOX);
828 value = (((u32) hw->ipgt & MAC_IPG_IFG_IPGT_MASK)
829 << MAC_IPG_IFG_IPGT_SHIFT) |
830 (((u32) hw->min_ifg & MAC_IPG_IFG_MIFG_MASK)
831 << MAC_IPG_IFG_MIFG_SHIFT) |
832 (((u32) hw->ipgr1 & MAC_IPG_IFG_IPGR1_MASK)
833 << MAC_IPG_IFG_IPGR1_SHIFT) |
834 (((u32) hw->ipgr2 & MAC_IPG_IFG_IPGR2_MASK)
835 << MAC_IPG_IFG_IPGR2_SHIFT);
836 iowrite32(value, hw->hw_addr + REG_MAC_IPG_IFG);
838 /* config Half-Duplex Control */
839 value = ((u32) hw->lcol & MAC_HALF_DUPLX_CTRL_LCOL_MASK) |
840 (((u32) hw->max_retry & MAC_HALF_DUPLX_CTRL_RETRY_MASK)
841 << MAC_HALF_DUPLX_CTRL_RETRY_SHIFT) |
842 MAC_HALF_DUPLX_CTRL_EXC_DEF_EN |
843 (0xa << MAC_HALF_DUPLX_CTRL_ABEBT_SHIFT) |
844 (((u32) hw->jam_ipg & MAC_HALF_DUPLX_CTRL_JAMIPG_MASK)
845 << MAC_HALF_DUPLX_CTRL_JAMIPG_SHIFT);
846 iowrite32(value, hw->hw_addr + REG_MAC_HALF_DUPLX_CTRL);
848 /* set Interrupt Moderator Timer */
849 iowrite16(adapter->imt, hw->hw_addr + REG_IRQ_MODU_TIMER_INIT);
850 iowrite32(MASTER_CTRL_ITIMER_EN, hw->hw_addr + REG_MASTER_CTRL);
852 /* set Interrupt Clear Timer */
853 iowrite16(adapter->ict, hw->hw_addr + REG_CMBDISDMA_TIMER);
855 /* set MTU, 4 : VLAN */
856 iowrite32(hw->max_frame_size + 4, hw->hw_addr + REG_MTU);
858 /* jumbo size & rrd retirement timer */
859 value = (((u32) hw->rx_jumbo_th & RXQ_JMBOSZ_TH_MASK)
860 << RXQ_JMBOSZ_TH_SHIFT) |
861 (((u32) hw->rx_jumbo_lkah & RXQ_JMBO_LKAH_MASK)
862 << RXQ_JMBO_LKAH_SHIFT) |
863 (((u32) hw->rrd_ret_timer & RXQ_RRD_TIMER_MASK)
864 << RXQ_RRD_TIMER_SHIFT);
865 iowrite32(value, hw->hw_addr + REG_RXQ_JMBOSZ_RRDTIM);
868 switch (hw->dev_rev) {
873 set_flow_ctrl_old(adapter);
876 set_flow_ctrl_new(hw);
881 value = (((u32) hw->tpd_burst & TXQ_CTRL_TPD_BURST_NUM_MASK)
882 << TXQ_CTRL_TPD_BURST_NUM_SHIFT) |
883 (((u32) hw->txf_burst & TXQ_CTRL_TXF_BURST_NUM_MASK)
884 << TXQ_CTRL_TXF_BURST_NUM_SHIFT) |
885 (((u32) hw->tpd_fetch_th & TXQ_CTRL_TPD_FETCH_TH_MASK)
886 << TXQ_CTRL_TPD_FETCH_TH_SHIFT) | TXQ_CTRL_ENH_MODE |
888 iowrite32(value, hw->hw_addr + REG_TXQ_CTRL);
890 /* min tpd fetch gap & tx jumbo packet size threshold for taskoffload */
891 value = (((u32) hw->tx_jumbo_task_th & TX_JUMBO_TASK_TH_MASK)
892 << TX_JUMBO_TASK_TH_SHIFT) |
893 (((u32) hw->tpd_fetch_gap & TX_TPD_MIN_IPG_MASK)
894 << TX_TPD_MIN_IPG_SHIFT);
895 iowrite32(value, hw->hw_addr + REG_TX_JUMBO_TASK_TH_TPD_IPG);
898 value = (((u32) hw->rfd_burst & RXQ_CTRL_RFD_BURST_NUM_MASK)
899 << RXQ_CTRL_RFD_BURST_NUM_SHIFT) |
900 (((u32) hw->rrd_burst & RXQ_CTRL_RRD_BURST_THRESH_MASK)
901 << RXQ_CTRL_RRD_BURST_THRESH_SHIFT) |
902 (((u32) hw->rfd_fetch_gap & RXQ_CTRL_RFD_PREF_MIN_IPG_MASK)
903 << RXQ_CTRL_RFD_PREF_MIN_IPG_SHIFT) | RXQ_CTRL_CUT_THRU_EN |
905 iowrite32(value, hw->hw_addr + REG_RXQ_CTRL);
907 /* config DMA Engine */
908 value = ((((u32) hw->dmar_block) & DMA_CTRL_DMAR_BURST_LEN_MASK)
909 << DMA_CTRL_DMAR_BURST_LEN_SHIFT) |
910 ((((u32) hw->dmaw_block) & DMA_CTRL_DMAR_BURST_LEN_MASK)
911 << DMA_CTRL_DMAR_BURST_LEN_SHIFT) | DMA_CTRL_DMAR_EN |
913 value |= (u32) hw->dma_ord;
914 if (atl1_rcb_128 == hw->rcb_value)
915 value |= DMA_CTRL_RCB_VALUE;
916 iowrite32(value, hw->hw_addr + REG_DMA_CTRL);
918 /* config CMB / SMB */
919 value = hw->cmb_rrd | ((u32) hw->cmb_tpd << 16);
920 iowrite32(value, hw->hw_addr + REG_CMB_WRITE_TH);
921 value = hw->cmb_rx_timer | ((u32) hw->cmb_tx_timer << 16);
922 iowrite32(value, hw->hw_addr + REG_CMB_WRITE_TIMER);
923 iowrite32(hw->smb_timer, hw->hw_addr + REG_SMB_TIMER);
925 /* --- enable CMB / SMB */
926 value = CSMB_CTRL_CMB_EN | CSMB_CTRL_SMB_EN;
927 iowrite32(value, hw->hw_addr + REG_CSMB_CTRL);
929 value = ioread32(adapter->hw.hw_addr + REG_ISR);
930 if (unlikely((value & ISR_PHY_LINKDOWN) != 0))
931 value = 1; /* config failed */
935 /* clear all interrupt status */
936 iowrite32(0x3fffffff, adapter->hw.hw_addr + REG_ISR);
937 iowrite32(0, adapter->hw.hw_addr + REG_ISR);
942 * atl1_pcie_patch - Patch for PCIE module
944 static void atl1_pcie_patch(struct atl1_adapter *adapter)
948 /* much vendor magic here */
950 iowrite32(value, adapter->hw.hw_addr + 0x12FC);
951 /* pcie flow control mode change */
952 value = ioread32(adapter->hw.hw_addr + 0x1008);
954 iowrite32(value, adapter->hw.hw_addr + 0x1008);
958 * When ACPI resume on some VIA MotherBoard, the Interrupt Disable bit/0x400
959 * on PCI Command register is disable.
960 * The function enable this bit.
961 * Brackett, 2006/03/15
963 static void atl1_via_workaround(struct atl1_adapter *adapter)
967 value = ioread16(adapter->hw.hw_addr + PCI_COMMAND);
968 if (value & PCI_COMMAND_INTX_DISABLE)
969 value &= ~PCI_COMMAND_INTX_DISABLE;
970 iowrite32(value, adapter->hw.hw_addr + PCI_COMMAND);
974 * atl1_irq_enable - Enable default interrupt generation settings
975 * @adapter: board private structure
977 static void atl1_irq_enable(struct atl1_adapter *adapter)
979 iowrite32(IMR_NORMAL_MASK, adapter->hw.hw_addr + REG_IMR);
980 ioread32(adapter->hw.hw_addr + REG_IMR);
984 * atl1_irq_disable - Mask off interrupt generation on the NIC
985 * @adapter: board private structure
987 static void atl1_irq_disable(struct atl1_adapter *adapter)
989 iowrite32(0, adapter->hw.hw_addr + REG_IMR);
990 ioread32(adapter->hw.hw_addr + REG_IMR);
991 synchronize_irq(adapter->pdev->irq);
994 static void atl1_clear_phy_int(struct atl1_adapter *adapter)
999 spin_lock_irqsave(&adapter->lock, flags);
1000 atl1_read_phy_reg(&adapter->hw, 19, &phy_data);
1001 spin_unlock_irqrestore(&adapter->lock, flags);
1004 static void atl1_inc_smb(struct atl1_adapter *adapter)
1006 struct stats_msg_block *smb = adapter->smb.smb;
1008 /* Fill out the OS statistics structure */
1009 adapter->soft_stats.rx_packets += smb->rx_ok;
1010 adapter->soft_stats.tx_packets += smb->tx_ok;
1011 adapter->soft_stats.rx_bytes += smb->rx_byte_cnt;
1012 adapter->soft_stats.tx_bytes += smb->tx_byte_cnt;
1013 adapter->soft_stats.multicast += smb->rx_mcast;
1014 adapter->soft_stats.collisions += (smb->tx_1_col + smb->tx_2_col * 2 +
1015 smb->tx_late_col + smb->tx_abort_col * adapter->hw.max_retry);
1018 adapter->soft_stats.rx_errors += (smb->rx_frag + smb->rx_fcs_err +
1019 smb->rx_len_err + smb->rx_sz_ov + smb->rx_rxf_ov +
1020 smb->rx_rrd_ov + smb->rx_align_err);
1021 adapter->soft_stats.rx_fifo_errors += smb->rx_rxf_ov;
1022 adapter->soft_stats.rx_length_errors += smb->rx_len_err;
1023 adapter->soft_stats.rx_crc_errors += smb->rx_fcs_err;
1024 adapter->soft_stats.rx_frame_errors += smb->rx_align_err;
1025 adapter->soft_stats.rx_missed_errors += (smb->rx_rrd_ov +
1028 adapter->soft_stats.rx_pause += smb->rx_pause;
1029 adapter->soft_stats.rx_rrd_ov += smb->rx_rrd_ov;
1030 adapter->soft_stats.rx_trunc += smb->rx_sz_ov;
1033 adapter->soft_stats.tx_errors += (smb->tx_late_col +
1034 smb->tx_abort_col + smb->tx_underrun + smb->tx_trunc);
1035 adapter->soft_stats.tx_fifo_errors += smb->tx_underrun;
1036 adapter->soft_stats.tx_aborted_errors += smb->tx_abort_col;
1037 adapter->soft_stats.tx_window_errors += smb->tx_late_col;
1039 adapter->soft_stats.excecol += smb->tx_abort_col;
1040 adapter->soft_stats.deffer += smb->tx_defer;
1041 adapter->soft_stats.scc += smb->tx_1_col;
1042 adapter->soft_stats.mcc += smb->tx_2_col;
1043 adapter->soft_stats.latecol += smb->tx_late_col;
1044 adapter->soft_stats.tx_underun += smb->tx_underrun;
1045 adapter->soft_stats.tx_trunc += smb->tx_trunc;
1046 adapter->soft_stats.tx_pause += smb->tx_pause;
1048 adapter->net_stats.rx_packets = adapter->soft_stats.rx_packets;
1049 adapter->net_stats.tx_packets = adapter->soft_stats.tx_packets;
1050 adapter->net_stats.rx_bytes = adapter->soft_stats.rx_bytes;
1051 adapter->net_stats.tx_bytes = adapter->soft_stats.tx_bytes;
1052 adapter->net_stats.multicast = adapter->soft_stats.multicast;
1053 adapter->net_stats.collisions = adapter->soft_stats.collisions;
1054 adapter->net_stats.rx_errors = adapter->soft_stats.rx_errors;
1055 adapter->net_stats.rx_over_errors =
1056 adapter->soft_stats.rx_missed_errors;
1057 adapter->net_stats.rx_length_errors =
1058 adapter->soft_stats.rx_length_errors;
1059 adapter->net_stats.rx_crc_errors = adapter->soft_stats.rx_crc_errors;
1060 adapter->net_stats.rx_frame_errors =
1061 adapter->soft_stats.rx_frame_errors;
1062 adapter->net_stats.rx_fifo_errors = adapter->soft_stats.rx_fifo_errors;
1063 adapter->net_stats.rx_missed_errors =
1064 adapter->soft_stats.rx_missed_errors;
1065 adapter->net_stats.tx_errors = adapter->soft_stats.tx_errors;
1066 adapter->net_stats.tx_fifo_errors = adapter->soft_stats.tx_fifo_errors;
1067 adapter->net_stats.tx_aborted_errors =
1068 adapter->soft_stats.tx_aborted_errors;
1069 adapter->net_stats.tx_window_errors =
1070 adapter->soft_stats.tx_window_errors;
1071 adapter->net_stats.tx_carrier_errors =
1072 adapter->soft_stats.tx_carrier_errors;
1076 * atl1_get_stats - Get System Network Statistics
1077 * @netdev: network interface device structure
1079 * Returns the address of the device statistics structure.
1080 * The statistics are actually updated from the timer callback.
1082 static struct net_device_stats *atl1_get_stats(struct net_device *netdev)
1084 struct atl1_adapter *adapter = netdev_priv(netdev);
1085 return &adapter->net_stats;
1088 static void atl1_update_mailbox(struct atl1_adapter *adapter)
1090 unsigned long flags;
1091 u32 tpd_next_to_use;
1092 u32 rfd_next_to_use;
1093 u32 rrd_next_to_clean;
1096 spin_lock_irqsave(&adapter->mb_lock, flags);
1098 tpd_next_to_use = atomic_read(&adapter->tpd_ring.next_to_use);
1099 rfd_next_to_use = atomic_read(&adapter->rfd_ring.next_to_use);
1100 rrd_next_to_clean = atomic_read(&adapter->rrd_ring.next_to_clean);
1102 value = ((rfd_next_to_use & MB_RFD_PROD_INDX_MASK) <<
1103 MB_RFD_PROD_INDX_SHIFT) |
1104 ((rrd_next_to_clean & MB_RRD_CONS_INDX_MASK) <<
1105 MB_RRD_CONS_INDX_SHIFT) |
1106 ((tpd_next_to_use & MB_TPD_PROD_INDX_MASK) <<
1107 MB_TPD_PROD_INDX_SHIFT);
1108 iowrite32(value, adapter->hw.hw_addr + REG_MAILBOX);
1110 spin_unlock_irqrestore(&adapter->mb_lock, flags);
1113 static void atl1_clean_alloc_flag(struct atl1_adapter *adapter,
1114 struct rx_return_desc *rrd, u16 offset)
1116 struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring;
1118 while (rfd_ring->next_to_clean != (rrd->buf_indx + offset)) {
1119 rfd_ring->buffer_info[rfd_ring->next_to_clean].alloced = 0;
1120 if (++rfd_ring->next_to_clean == rfd_ring->count) {
1121 rfd_ring->next_to_clean = 0;
1126 static void atl1_update_rfd_index(struct atl1_adapter *adapter,
1127 struct rx_return_desc *rrd)
1131 num_buf = (rrd->xsz.xsum_sz.pkt_size + adapter->rx_buffer_len - 1) /
1132 adapter->rx_buffer_len;
1133 if (rrd->num_buf == num_buf)
1134 /* clean alloc flag for bad rrd */
1135 atl1_clean_alloc_flag(adapter, rrd, num_buf);
1138 static void atl1_rx_checksum(struct atl1_adapter *adapter,
1139 struct rx_return_desc *rrd, struct sk_buff *skb)
1141 struct pci_dev *pdev = adapter->pdev;
1143 skb->ip_summed = CHECKSUM_NONE;
1145 if (unlikely(rrd->pkt_flg & PACKET_FLAG_ERR)) {
1146 if (rrd->err_flg & (ERR_FLAG_CRC | ERR_FLAG_TRUNC |
1147 ERR_FLAG_CODE | ERR_FLAG_OV)) {
1148 adapter->hw_csum_err++;
1149 dev_printk(KERN_DEBUG, &pdev->dev,
1150 "rx checksum error\n");
1156 if (!(rrd->pkt_flg & PACKET_FLAG_IPV4))
1157 /* checksum is invalid, but it's not an IPv4 pkt, so ok */
1161 if (likely(!(rrd->err_flg &
1162 (ERR_FLAG_IP_CHKSUM | ERR_FLAG_L4_CHKSUM)))) {
1163 skb->ip_summed = CHECKSUM_UNNECESSARY;
1164 adapter->hw_csum_good++;
1168 /* IPv4, but hardware thinks its checksum is wrong */
1169 dev_printk(KERN_DEBUG, &pdev->dev,
1170 "hw csum wrong, pkt_flag:%x, err_flag:%x\n",
1171 rrd->pkt_flg, rrd->err_flg);
1172 skb->ip_summed = CHECKSUM_COMPLETE;
1173 skb->csum = htons(rrd->xsz.xsum_sz.rx_chksum);
1174 adapter->hw_csum_err++;
1179 * atl1_alloc_rx_buffers - Replace used receive buffers
1180 * @adapter: address of board private structure
1182 static u16 atl1_alloc_rx_buffers(struct atl1_adapter *adapter)
1184 struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring;
1185 struct pci_dev *pdev = adapter->pdev;
1187 unsigned long offset;
1188 struct atl1_buffer *buffer_info, *next_info;
1189 struct sk_buff *skb;
1191 u16 rfd_next_to_use, next_next;
1192 struct rx_free_desc *rfd_desc;
1194 next_next = rfd_next_to_use = atomic_read(&rfd_ring->next_to_use);
1195 if (++next_next == rfd_ring->count)
1197 buffer_info = &rfd_ring->buffer_info[rfd_next_to_use];
1198 next_info = &rfd_ring->buffer_info[next_next];
1200 while (!buffer_info->alloced && !next_info->alloced) {
1201 if (buffer_info->skb) {
1202 buffer_info->alloced = 1;
1206 rfd_desc = ATL1_RFD_DESC(rfd_ring, rfd_next_to_use);
1208 skb = dev_alloc_skb(adapter->rx_buffer_len + NET_IP_ALIGN);
1209 if (unlikely(!skb)) { /* Better luck next round */
1210 adapter->net_stats.rx_dropped++;
1215 * Make buffer alignment 2 beyond a 16 byte boundary
1216 * this will result in a 16 byte aligned IP header after
1217 * the 14 byte MAC header is removed
1219 skb_reserve(skb, NET_IP_ALIGN);
1221 buffer_info->alloced = 1;
1222 buffer_info->skb = skb;
1223 buffer_info->length = (u16) adapter->rx_buffer_len;
1224 page = virt_to_page(skb->data);
1225 offset = (unsigned long)skb->data & ~PAGE_MASK;
1226 buffer_info->dma = pci_map_page(pdev, page, offset,
1227 adapter->rx_buffer_len,
1228 PCI_DMA_FROMDEVICE);
1229 rfd_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
1230 rfd_desc->buf_len = cpu_to_le16(adapter->rx_buffer_len);
1231 rfd_desc->coalese = 0;
1234 rfd_next_to_use = next_next;
1235 if (unlikely(++next_next == rfd_ring->count))
1238 buffer_info = &rfd_ring->buffer_info[rfd_next_to_use];
1239 next_info = &rfd_ring->buffer_info[next_next];
1245 * Force memory writes to complete before letting h/w
1246 * know there are new descriptors to fetch. (Only
1247 * applicable for weak-ordered memory model archs,
1251 atomic_set(&rfd_ring->next_to_use, (int)rfd_next_to_use);
1256 static void atl1_intr_rx(struct atl1_adapter *adapter)
1260 u16 rrd_next_to_clean;
1262 struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring;
1263 struct atl1_rrd_ring *rrd_ring = &adapter->rrd_ring;
1264 struct atl1_buffer *buffer_info;
1265 struct rx_return_desc *rrd;
1266 struct sk_buff *skb;
1270 rrd_next_to_clean = atomic_read(&rrd_ring->next_to_clean);
1273 rrd = ATL1_RRD_DESC(rrd_ring, rrd_next_to_clean);
1275 if (likely(rrd->xsz.valid)) { /* packet valid */
1277 /* check rrd status */
1278 if (likely(rrd->num_buf == 1))
1281 /* rrd seems to be bad */
1282 if (unlikely(i-- > 0)) {
1283 /* rrd may not be DMAed completely */
1284 dev_printk(KERN_DEBUG, &adapter->pdev->dev,
1285 "incomplete RRD DMA transfer\n");
1290 dev_printk(KERN_DEBUG, &adapter->pdev->dev,
1292 /* see if update RFD index */
1293 if (rrd->num_buf > 1)
1294 atl1_update_rfd_index(adapter, rrd);
1298 if (++rrd_next_to_clean == rrd_ring->count)
1299 rrd_next_to_clean = 0;
1302 } else { /* current rrd still not be updated */
1307 /* clean alloc flag for bad rrd */
1308 atl1_clean_alloc_flag(adapter, rrd, 0);
1310 buffer_info = &rfd_ring->buffer_info[rrd->buf_indx];
1311 if (++rfd_ring->next_to_clean == rfd_ring->count)
1312 rfd_ring->next_to_clean = 0;
1314 /* update rrd next to clean */
1315 if (++rrd_next_to_clean == rrd_ring->count)
1316 rrd_next_to_clean = 0;
1319 if (unlikely(rrd->pkt_flg & PACKET_FLAG_ERR)) {
1320 if (!(rrd->err_flg &
1321 (ERR_FLAG_IP_CHKSUM | ERR_FLAG_L4_CHKSUM
1323 /* packet error, don't need upstream */
1324 buffer_info->alloced = 0;
1331 pci_unmap_page(adapter->pdev, buffer_info->dma,
1332 buffer_info->length, PCI_DMA_FROMDEVICE);
1333 skb = buffer_info->skb;
1334 length = le16_to_cpu(rrd->xsz.xsum_sz.pkt_size);
1336 skb_put(skb, length - ETHERNET_FCS_SIZE);
1338 /* Receive Checksum Offload */
1339 atl1_rx_checksum(adapter, rrd, skb);
1340 skb->protocol = eth_type_trans(skb, adapter->netdev);
1342 if (adapter->vlgrp && (rrd->pkt_flg & PACKET_FLAG_VLAN_INS)) {
1343 u16 vlan_tag = (rrd->vlan_tag >> 4) |
1344 ((rrd->vlan_tag & 7) << 13) |
1345 ((rrd->vlan_tag & 8) << 9);
1346 vlan_hwaccel_rx(skb, adapter->vlgrp, vlan_tag);
1350 /* let protocol layer free skb */
1351 buffer_info->skb = NULL;
1352 buffer_info->alloced = 0;
1355 adapter->netdev->last_rx = jiffies;
1358 atomic_set(&rrd_ring->next_to_clean, rrd_next_to_clean);
1360 atl1_alloc_rx_buffers(adapter);
1362 /* update mailbox ? */
1364 u32 tpd_next_to_use;
1365 u32 rfd_next_to_use;
1366 u32 rrd_next_to_clean;
1368 spin_lock(&adapter->mb_lock);
1370 tpd_next_to_use = atomic_read(&adapter->tpd_ring.next_to_use);
1372 atomic_read(&adapter->rfd_ring.next_to_use);
1374 atomic_read(&adapter->rrd_ring.next_to_clean);
1375 value = ((rfd_next_to_use & MB_RFD_PROD_INDX_MASK) <<
1376 MB_RFD_PROD_INDX_SHIFT) |
1377 ((rrd_next_to_clean & MB_RRD_CONS_INDX_MASK) <<
1378 MB_RRD_CONS_INDX_SHIFT) |
1379 ((tpd_next_to_use & MB_TPD_PROD_INDX_MASK) <<
1380 MB_TPD_PROD_INDX_SHIFT);
1381 iowrite32(value, adapter->hw.hw_addr + REG_MAILBOX);
1382 spin_unlock(&adapter->mb_lock);
1386 static void atl1_intr_tx(struct atl1_adapter *adapter)
1388 struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring;
1389 struct atl1_buffer *buffer_info;
1390 u16 sw_tpd_next_to_clean;
1391 u16 cmb_tpd_next_to_clean;
1393 sw_tpd_next_to_clean = atomic_read(&tpd_ring->next_to_clean);
1394 cmb_tpd_next_to_clean = le16_to_cpu(adapter->cmb.cmb->tpd_cons_idx);
1396 while (cmb_tpd_next_to_clean != sw_tpd_next_to_clean) {
1397 struct tx_packet_desc *tpd;
1399 tpd = ATL1_TPD_DESC(tpd_ring, sw_tpd_next_to_clean);
1400 buffer_info = &tpd_ring->buffer_info[sw_tpd_next_to_clean];
1401 if (buffer_info->dma) {
1402 pci_unmap_page(adapter->pdev, buffer_info->dma,
1403 buffer_info->length, PCI_DMA_TODEVICE);
1404 buffer_info->dma = 0;
1407 if (buffer_info->skb) {
1408 dev_kfree_skb_irq(buffer_info->skb);
1409 buffer_info->skb = NULL;
1411 tpd->buffer_addr = 0;
1414 if (++sw_tpd_next_to_clean == tpd_ring->count)
1415 sw_tpd_next_to_clean = 0;
1417 atomic_set(&tpd_ring->next_to_clean, sw_tpd_next_to_clean);
1419 if (netif_queue_stopped(adapter->netdev)
1420 && netif_carrier_ok(adapter->netdev))
1421 netif_wake_queue(adapter->netdev);
1424 static u16 tpd_avail(struct atl1_tpd_ring *tpd_ring)
1426 u16 next_to_clean = atomic_read(&tpd_ring->next_to_clean);
1427 u16 next_to_use = atomic_read(&tpd_ring->next_to_use);
1428 return ((next_to_clean > next_to_use) ?
1429 next_to_clean - next_to_use - 1 :
1430 tpd_ring->count + next_to_clean - next_to_use - 1);
1433 static int atl1_tso(struct atl1_adapter *adapter, struct sk_buff *skb,
1434 struct tso_param *tso)
1436 /* We enter this function holding a spinlock. */
1440 if (skb_shinfo(skb)->gso_size) {
1441 if (skb_header_cloned(skb)) {
1442 err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
1447 if (skb->protocol == ntohs(ETH_P_IP)) {
1448 struct iphdr *iph = ip_hdr(skb);
1452 tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
1453 iph->daddr, 0, IPPROTO_TCP, 0);
1454 ipofst = skb_network_offset(skb);
1455 if (ipofst != ENET_HEADER_SIZE) /* 802.3 frame */
1456 tso->tsopl |= 1 << TSO_PARAM_ETHTYPE_SHIFT;
1458 tso->tsopl |= (iph->ihl &
1459 CSUM_PARAM_IPHL_MASK) << CSUM_PARAM_IPHL_SHIFT;
1460 tso->tsopl |= (tcp_hdrlen(skb) &
1461 TSO_PARAM_TCPHDRLEN_MASK) <<
1462 TSO_PARAM_TCPHDRLEN_SHIFT;
1463 tso->tsopl |= (skb_shinfo(skb)->gso_size &
1464 TSO_PARAM_MSS_MASK) << TSO_PARAM_MSS_SHIFT;
1465 tso->tsopl |= 1 << TSO_PARAM_IPCKSUM_SHIFT;
1466 tso->tsopl |= 1 << TSO_PARAM_TCPCKSUM_SHIFT;
1467 tso->tsopl |= 1 << TSO_PARAM_SEGMENT_SHIFT;
1474 static int atl1_tx_csum(struct atl1_adapter *adapter, struct sk_buff *skb,
1475 struct csum_param *csum)
1479 if (likely(skb->ip_summed == CHECKSUM_PARTIAL)) {
1480 cso = skb_transport_offset(skb);
1481 css = cso + skb->csum_offset;
1482 if (unlikely(cso & 0x1)) {
1483 dev_printk(KERN_DEBUG, &adapter->pdev->dev,
1484 "payload offset not an even number\n");
1487 csum->csumpl |= (cso & CSUM_PARAM_PLOADOFFSET_MASK) <<
1488 CSUM_PARAM_PLOADOFFSET_SHIFT;
1489 csum->csumpl |= (css & CSUM_PARAM_XSUMOFFSET_MASK) <<
1490 CSUM_PARAM_XSUMOFFSET_SHIFT;
1491 csum->csumpl |= 1 << CSUM_PARAM_CUSTOMCKSUM_SHIFT;
1498 static void atl1_tx_map(struct atl1_adapter *adapter, struct sk_buff *skb,
1501 /* We enter this function holding a spinlock. */
1502 struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring;
1503 struct atl1_buffer *buffer_info;
1505 int first_buf_len = skb->len;
1506 unsigned long offset;
1507 unsigned int nr_frags;
1509 u16 tpd_next_to_use;
1513 first_buf_len -= skb->data_len;
1514 nr_frags = skb_shinfo(skb)->nr_frags;
1515 tpd_next_to_use = atomic_read(&tpd_ring->next_to_use);
1516 buffer_info = &tpd_ring->buffer_info[tpd_next_to_use];
1517 if (unlikely(buffer_info->skb))
1519 buffer_info->skb = NULL; /* put skb in last TPD */
1523 proto_hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
1524 buffer_info->length = proto_hdr_len;
1525 page = virt_to_page(skb->data);
1526 offset = (unsigned long)skb->data & ~PAGE_MASK;
1527 buffer_info->dma = pci_map_page(adapter->pdev, page,
1528 offset, proto_hdr_len,
1531 if (++tpd_next_to_use == tpd_ring->count)
1532 tpd_next_to_use = 0;
1534 if (first_buf_len > proto_hdr_len) {
1535 len12 = first_buf_len - proto_hdr_len;
1536 m = (len12 + ATL1_MAX_TX_BUF_LEN - 1) /
1537 ATL1_MAX_TX_BUF_LEN;
1538 for (i = 0; i < m; i++) {
1540 &tpd_ring->buffer_info[tpd_next_to_use];
1541 buffer_info->skb = NULL;
1542 buffer_info->length =
1543 (ATL1_MAX_TX_BUF_LEN >=
1544 len12) ? ATL1_MAX_TX_BUF_LEN : len12;
1545 len12 -= buffer_info->length;
1546 page = virt_to_page(skb->data +
1548 i * ATL1_MAX_TX_BUF_LEN));
1549 offset = (unsigned long)(skb->data +
1551 i * ATL1_MAX_TX_BUF_LEN)) & ~PAGE_MASK;
1552 buffer_info->dma = pci_map_page(adapter->pdev,
1553 page, offset, buffer_info->length,
1555 if (++tpd_next_to_use == tpd_ring->count)
1556 tpd_next_to_use = 0;
1561 buffer_info->length = first_buf_len;
1562 page = virt_to_page(skb->data);
1563 offset = (unsigned long)skb->data & ~PAGE_MASK;
1564 buffer_info->dma = pci_map_page(adapter->pdev, page,
1565 offset, first_buf_len, PCI_DMA_TODEVICE);
1566 if (++tpd_next_to_use == tpd_ring->count)
1567 tpd_next_to_use = 0;
1570 for (f = 0; f < nr_frags; f++) {
1571 struct skb_frag_struct *frag;
1574 frag = &skb_shinfo(skb)->frags[f];
1577 m = (lenf + ATL1_MAX_TX_BUF_LEN - 1) / ATL1_MAX_TX_BUF_LEN;
1578 for (i = 0; i < m; i++) {
1579 buffer_info = &tpd_ring->buffer_info[tpd_next_to_use];
1580 if (unlikely(buffer_info->skb))
1582 buffer_info->skb = NULL;
1583 buffer_info->length = (lenf > ATL1_MAX_TX_BUF_LEN) ?
1584 ATL1_MAX_TX_BUF_LEN : lenf;
1585 lenf -= buffer_info->length;
1586 buffer_info->dma = pci_map_page(adapter->pdev,
1588 frag->page_offset + (i * ATL1_MAX_TX_BUF_LEN),
1589 buffer_info->length, PCI_DMA_TODEVICE);
1591 if (++tpd_next_to_use == tpd_ring->count)
1592 tpd_next_to_use = 0;
1596 /* last tpd's buffer-info */
1597 buffer_info->skb = skb;
1600 static void atl1_tx_queue(struct atl1_adapter *adapter, int count,
1601 union tpd_descr *descr)
1603 /* We enter this function holding a spinlock. */
1604 struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring;
1607 struct atl1_buffer *buffer_info;
1608 struct tx_packet_desc *tpd;
1609 u16 tpd_next_to_use = atomic_read(&tpd_ring->next_to_use);
1611 for (j = 0; j < count; j++) {
1612 buffer_info = &tpd_ring->buffer_info[tpd_next_to_use];
1613 tpd = ATL1_TPD_DESC(&adapter->tpd_ring, tpd_next_to_use);
1614 tpd->desc.csum.csumpu = descr->csum.csumpu;
1615 tpd->desc.csum.csumpl = descr->csum.csumpl;
1616 tpd->desc.tso.tsopu = descr->tso.tsopu;
1617 tpd->desc.tso.tsopl = descr->tso.tsopl;
1618 tpd->buffer_addr = cpu_to_le64(buffer_info->dma);
1619 tpd->desc.data = descr->data;
1620 tpd->desc.csum.csumpu |= (cpu_to_le16(buffer_info->length) &
1621 CSUM_PARAM_BUFLEN_MASK) << CSUM_PARAM_BUFLEN_SHIFT;
1623 val = (descr->tso.tsopl >> TSO_PARAM_SEGMENT_SHIFT) &
1624 TSO_PARAM_SEGMENT_MASK;
1626 tpd->desc.tso.tsopl |= 1 << TSO_PARAM_HDRFLAG_SHIFT;
1628 if (j == (count - 1))
1629 tpd->desc.csum.csumpl |= 1 << CSUM_PARAM_EOP_SHIFT;
1631 if (++tpd_next_to_use == tpd_ring->count)
1632 tpd_next_to_use = 0;
1635 * Force memory writes to complete before letting h/w
1636 * know there are new descriptors to fetch. (Only
1637 * applicable for weak-ordered memory model archs,
1642 atomic_set(&tpd_ring->next_to_use, (int)tpd_next_to_use);
1645 static int atl1_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
1647 struct atl1_adapter *adapter = netdev_priv(netdev);
1653 union tpd_descr param;
1656 unsigned long flags;
1657 unsigned int nr_frags = 0;
1658 unsigned int mss = 0;
1660 unsigned int proto_hdr_len;
1662 len -= skb->data_len;
1664 if (unlikely(skb->len == 0)) {
1665 dev_kfree_skb_any(skb);
1666 return NETDEV_TX_OK;
1670 param.tso.tsopu = 0;
1671 param.tso.tsopl = 0;
1672 param.csum.csumpu = 0;
1673 param.csum.csumpl = 0;
1675 /* nr_frags will be nonzero if we're doing scatter/gather (SG) */
1676 nr_frags = skb_shinfo(skb)->nr_frags;
1677 for (f = 0; f < nr_frags; f++) {
1678 frag_size = skb_shinfo(skb)->frags[f].size;
1680 count += (frag_size + ATL1_MAX_TX_BUF_LEN - 1) /
1681 ATL1_MAX_TX_BUF_LEN;
1684 /* mss will be nonzero if we're doing segment offload (TSO/GSO) */
1685 mss = skb_shinfo(skb)->gso_size;
1687 if (skb->protocol == htons(ETH_P_IP)) {
1688 proto_hdr_len = (skb_transport_offset(skb) +
1690 if (unlikely(proto_hdr_len > len)) {
1691 dev_kfree_skb_any(skb);
1692 return NETDEV_TX_OK;
1694 /* need additional TPD ? */
1695 if (proto_hdr_len != len)
1696 count += (len - proto_hdr_len +
1697 ATL1_MAX_TX_BUF_LEN - 1) /
1698 ATL1_MAX_TX_BUF_LEN;
1702 local_irq_save(flags);
1703 if (!spin_trylock(&adapter->lock)) {
1704 /* Can't get lock - tell upper layer to requeue */
1705 local_irq_restore(flags);
1706 dev_printk(KERN_DEBUG, &adapter->pdev->dev, "tx locked\n");
1707 return NETDEV_TX_LOCKED;
1710 if (tpd_avail(&adapter->tpd_ring) < count) {
1711 /* not enough descriptors */
1712 netif_stop_queue(netdev);
1713 spin_unlock_irqrestore(&adapter->lock, flags);
1714 dev_printk(KERN_DEBUG, &adapter->pdev->dev, "tx busy\n");
1715 return NETDEV_TX_BUSY;
1720 if (adapter->vlgrp && vlan_tx_tag_present(skb)) {
1721 vlan_tag = vlan_tx_tag_get(skb);
1722 vlan_tag = (vlan_tag << 4) | (vlan_tag >> 13) |
1723 ((vlan_tag >> 9) & 0x8);
1724 param.csum.csumpl |= 1 << CSUM_PARAM_INSVLAG_SHIFT;
1725 param.csum.csumpu |= (vlan_tag & CSUM_PARAM_VALANTAG_MASK) <<
1726 CSUM_PARAM_VALAN_SHIFT;
1729 tso = atl1_tso(adapter, skb, ¶m.tso);
1731 spin_unlock_irqrestore(&adapter->lock, flags);
1732 dev_kfree_skb_any(skb);
1733 return NETDEV_TX_OK;
1737 ret_val = atl1_tx_csum(adapter, skb, ¶m.csum);
1739 spin_unlock_irqrestore(&adapter->lock, flags);
1740 dev_kfree_skb_any(skb);
1741 return NETDEV_TX_OK;
1745 val = (param.csum.csumpl >> CSUM_PARAM_SEGMENT_SHIFT) &
1746 CSUM_PARAM_SEGMENT_MASK;
1747 atl1_tx_map(adapter, skb, 1 == val);
1748 atl1_tx_queue(adapter, count, ¶m);
1749 netdev->trans_start = jiffies;
1750 spin_unlock_irqrestore(&adapter->lock, flags);
1751 atl1_update_mailbox(adapter);
1752 return NETDEV_TX_OK;
1756 * atl1_intr - Interrupt Handler
1757 * @irq: interrupt number
1758 * @data: pointer to a network interface device structure
1759 * @pt_regs: CPU registers structure
1761 static irqreturn_t atl1_intr(int irq, void *data)
1763 struct atl1_adapter *adapter = netdev_priv(data);
1768 status = adapter->cmb.cmb->int_stats;
1775 /* clear CMB interrupt status at once */
1776 adapter->cmb.cmb->int_stats = 0;
1778 if (status & ISR_GPHY) /* clear phy status */
1779 atl1_clear_phy_int(adapter);
1781 /* clear ISR status, and Enable CMB DMA/Disable Interrupt */
1782 iowrite32(status | ISR_DIS_INT, adapter->hw.hw_addr + REG_ISR);
1784 /* check if SMB intr */
1785 if (status & ISR_SMB)
1786 atl1_inc_smb(adapter);
1788 /* check if PCIE PHY Link down */
1789 if (status & ISR_PHY_LINKDOWN) {
1790 dev_printk(KERN_DEBUG, &adapter->pdev->dev,
1791 "pcie phy link down %x\n", status);
1792 if (netif_running(adapter->netdev)) { /* reset MAC */
1793 iowrite32(0, adapter->hw.hw_addr + REG_IMR);
1794 schedule_work(&adapter->pcie_dma_to_rst_task);
1799 /* check if DMA read/write error ? */
1800 if (status & (ISR_DMAR_TO_RST | ISR_DMAW_TO_RST)) {
1801 dev_printk(KERN_DEBUG, &adapter->pdev->dev,
1802 "pcie DMA r/w error (status = 0x%x)\n",
1804 iowrite32(0, adapter->hw.hw_addr + REG_IMR);
1805 schedule_work(&adapter->pcie_dma_to_rst_task);
1810 if (status & ISR_GPHY) {
1811 adapter->soft_stats.tx_carrier_errors++;
1812 atl1_check_for_link(adapter);
1815 /* transmit event */
1816 if (status & ISR_CMB_TX)
1817 atl1_intr_tx(adapter);
1820 if (unlikely(status & (ISR_RXF_OV | ISR_RFD_UNRUN |
1821 ISR_RRD_OV | ISR_HOST_RFD_UNRUN |
1822 ISR_HOST_RRD_OV | ISR_CMB_RX))) {
1823 if (status & (ISR_RXF_OV | ISR_RFD_UNRUN |
1824 ISR_RRD_OV | ISR_HOST_RFD_UNRUN |
1826 dev_printk(KERN_DEBUG, &adapter->pdev->dev,
1827 "rx exception, ISR = 0x%x\n", status);
1828 atl1_intr_rx(adapter);
1834 } while ((status = adapter->cmb.cmb->int_stats));
1836 /* re-enable Interrupt */
1837 iowrite32(ISR_DIS_SMB | ISR_DIS_DMA, adapter->hw.hw_addr + REG_ISR);
1842 * atl1_watchdog - Timer Call-back
1843 * @data: pointer to netdev cast into an unsigned long
1845 static void atl1_watchdog(unsigned long data)
1847 struct atl1_adapter *adapter = (struct atl1_adapter *)data;
1849 /* Reset the timer */
1850 mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ);
1854 * atl1_phy_config - Timer Call-back
1855 * @data: pointer to netdev cast into an unsigned long
1857 static void atl1_phy_config(unsigned long data)
1859 struct atl1_adapter *adapter = (struct atl1_adapter *)data;
1860 struct atl1_hw *hw = &adapter->hw;
1861 unsigned long flags;
1863 spin_lock_irqsave(&adapter->lock, flags);
1864 adapter->phy_timer_pending = false;
1865 atl1_write_phy_reg(hw, MII_ADVERTISE, hw->mii_autoneg_adv_reg);
1866 atl1_write_phy_reg(hw, MII_AT001_CR, hw->mii_1000t_ctrl_reg);
1867 atl1_write_phy_reg(hw, MII_BMCR, MII_CR_RESET | MII_CR_AUTO_NEG_EN);
1868 spin_unlock_irqrestore(&adapter->lock, flags);
1872 * atl1_tx_timeout - Respond to a Tx Hang
1873 * @netdev: network interface device structure
1875 static void atl1_tx_timeout(struct net_device *netdev)
1877 struct atl1_adapter *adapter = netdev_priv(netdev);
1878 /* Do the reset outside of interrupt context */
1879 schedule_work(&adapter->tx_timeout_task);
1883 * Orphaned vendor comment left intact here:
1885 * If TPD Buffer size equal to 0, PCIE DMAR_TO_INT
1886 * will assert. We do soft reset <0x1400=1> according
1887 * with the SPEC. BUT, it seemes that PCIE or DMA
1888 * state-machine will not be reset. DMAR_TO_INT will
1889 * assert again and again.
1892 static void atl1_tx_timeout_task(struct work_struct *work)
1894 struct atl1_adapter *adapter =
1895 container_of(work, struct atl1_adapter, tx_timeout_task);
1896 struct net_device *netdev = adapter->netdev;
1898 netif_device_detach(netdev);
1901 netif_device_attach(netdev);
1905 * atl1_link_chg_task - deal with link change event Out of interrupt context
1907 static void atl1_link_chg_task(struct work_struct *work)
1909 struct atl1_adapter *adapter =
1910 container_of(work, struct atl1_adapter, link_chg_task);
1911 unsigned long flags;
1913 spin_lock_irqsave(&adapter->lock, flags);
1914 atl1_check_link(adapter);
1915 spin_unlock_irqrestore(&adapter->lock, flags);
1918 static void atl1_vlan_rx_register(struct net_device *netdev,
1919 struct vlan_group *grp)
1921 struct atl1_adapter *adapter = netdev_priv(netdev);
1922 unsigned long flags;
1925 spin_lock_irqsave(&adapter->lock, flags);
1926 /* atl1_irq_disable(adapter); */
1927 adapter->vlgrp = grp;
1930 /* enable VLAN tag insert/strip */
1931 ctrl = ioread32(adapter->hw.hw_addr + REG_MAC_CTRL);
1932 ctrl |= MAC_CTRL_RMV_VLAN;
1933 iowrite32(ctrl, adapter->hw.hw_addr + REG_MAC_CTRL);
1935 /* disable VLAN tag insert/strip */
1936 ctrl = ioread32(adapter->hw.hw_addr + REG_MAC_CTRL);
1937 ctrl &= ~MAC_CTRL_RMV_VLAN;
1938 iowrite32(ctrl, adapter->hw.hw_addr + REG_MAC_CTRL);
1941 /* atl1_irq_enable(adapter); */
1942 spin_unlock_irqrestore(&adapter->lock, flags);
1945 static void atl1_restore_vlan(struct atl1_adapter *adapter)
1947 atl1_vlan_rx_register(adapter->netdev, adapter->vlgrp);
1950 int atl1_reset(struct atl1_adapter *adapter)
1954 ret = atl1_reset_hw(&adapter->hw);
1955 if (ret != ATL1_SUCCESS)
1957 return atl1_init_hw(&adapter->hw);
1960 s32 atl1_up(struct atl1_adapter *adapter)
1962 struct net_device *netdev = adapter->netdev;
1964 int irq_flags = IRQF_SAMPLE_RANDOM;
1966 /* hardware has been reset, we need to reload some things */
1967 atl1_set_multi(netdev);
1968 atl1_init_ring_ptrs(adapter);
1969 atl1_restore_vlan(adapter);
1970 err = atl1_alloc_rx_buffers(adapter);
1971 if (unlikely(!err)) /* no RX BUFFER allocated */
1974 if (unlikely(atl1_configure(adapter))) {
1979 err = pci_enable_msi(adapter->pdev);
1981 dev_info(&adapter->pdev->dev,
1982 "Unable to enable MSI: %d\n", err);
1983 irq_flags |= IRQF_SHARED;
1986 err = request_irq(adapter->pdev->irq, &atl1_intr, irq_flags,
1987 netdev->name, netdev);
1991 mod_timer(&adapter->watchdog_timer, jiffies);
1992 atl1_irq_enable(adapter);
1993 atl1_check_link(adapter);
1997 pci_disable_msi(adapter->pdev);
1998 /* free rx_buffers */
1999 atl1_clean_rx_ring(adapter);
2003 void atl1_down(struct atl1_adapter *adapter)
2005 struct net_device *netdev = adapter->netdev;
2007 del_timer_sync(&adapter->watchdog_timer);
2008 del_timer_sync(&adapter->phy_config_timer);
2009 adapter->phy_timer_pending = false;
2011 atl1_irq_disable(adapter);
2012 free_irq(adapter->pdev->irq, netdev);
2013 pci_disable_msi(adapter->pdev);
2014 atl1_reset_hw(&adapter->hw);
2015 adapter->cmb.cmb->int_stats = 0;
2017 adapter->link_speed = SPEED_0;
2018 adapter->link_duplex = -1;
2019 netif_carrier_off(netdev);
2020 netif_stop_queue(netdev);
2022 atl1_clean_tx_ring(adapter);
2023 atl1_clean_rx_ring(adapter);
2027 * atl1_open - Called when a network interface is made active
2028 * @netdev: network interface device structure
2030 * Returns 0 on success, negative value on failure
2032 * The open entry point is called when a network interface is made
2033 * active by the system (IFF_UP). At this point all resources needed
2034 * for transmit and receive operations are allocated, the interrupt
2035 * handler is registered with the OS, the watchdog timer is started,
2036 * and the stack is notified that the interface is ready.
2038 static int atl1_open(struct net_device *netdev)
2040 struct atl1_adapter *adapter = netdev_priv(netdev);
2043 /* allocate transmit descriptors */
2044 err = atl1_setup_ring_resources(adapter);
2048 err = atl1_up(adapter);
2055 atl1_reset(adapter);
2060 * atl1_close - Disables a network interface
2061 * @netdev: network interface device structure
2063 * Returns 0, this is not allowed to fail
2065 * The close entry point is called when an interface is de-activated
2066 * by the OS. The hardware is still under the drivers control, but
2067 * needs to be disabled. A global MAC reset is issued to stop the
2068 * hardware, and all transmit and receive resources are freed.
2070 static int atl1_close(struct net_device *netdev)
2072 struct atl1_adapter *adapter = netdev_priv(netdev);
2074 atl1_free_ring_resources(adapter);
2079 static int atl1_suspend(struct pci_dev *pdev, pm_message_t state)
2081 struct net_device *netdev = pci_get_drvdata(pdev);
2082 struct atl1_adapter *adapter = netdev_priv(netdev);
2083 struct atl1_hw *hw = &adapter->hw;
2085 u32 wufc = adapter->wol;
2087 netif_device_detach(netdev);
2088 if (netif_running(netdev))
2091 atl1_read_phy_reg(hw, MII_BMSR, (u16 *) & ctrl);
2092 atl1_read_phy_reg(hw, MII_BMSR, (u16 *) & ctrl);
2093 if (ctrl & BMSR_LSTATUS)
2094 wufc &= ~ATL1_WUFC_LNKC;
2096 /* reduce speed to 10/100M */
2098 atl1_phy_enter_power_saving(hw);
2099 /* if resume, let driver to re- setup link */
2100 hw->phy_configured = false;
2101 atl1_set_mac_addr(hw);
2102 atl1_set_multi(netdev);
2105 /* turn on magic packet wol */
2106 if (wufc & ATL1_WUFC_MAG)
2107 ctrl = WOL_MAGIC_EN | WOL_MAGIC_PME_EN;
2109 /* turn on Link change WOL */
2110 if (wufc & ATL1_WUFC_LNKC)
2111 ctrl |= (WOL_LINK_CHG_EN | WOL_LINK_CHG_PME_EN);
2112 iowrite32(ctrl, hw->hw_addr + REG_WOL_CTRL);
2114 /* turn on all-multi mode if wake on multicast is enabled */
2115 ctrl = ioread32(hw->hw_addr + REG_MAC_CTRL);
2116 ctrl &= ~MAC_CTRL_DBG;
2117 ctrl &= ~MAC_CTRL_PROMIS_EN;
2118 if (wufc & ATL1_WUFC_MC)
2119 ctrl |= MAC_CTRL_MC_ALL_EN;
2121 ctrl &= ~MAC_CTRL_MC_ALL_EN;
2123 /* turn on broadcast mode if wake on-BC is enabled */
2124 if (wufc & ATL1_WUFC_BC)
2125 ctrl |= MAC_CTRL_BC_EN;
2127 ctrl &= ~MAC_CTRL_BC_EN;
2130 ctrl |= MAC_CTRL_RX_EN;
2131 iowrite32(ctrl, hw->hw_addr + REG_MAC_CTRL);
2132 pci_enable_wake(pdev, PCI_D3hot, 1);
2133 pci_enable_wake(pdev, PCI_D3cold, 1);
2135 iowrite32(0, hw->hw_addr + REG_WOL_CTRL);
2136 pci_enable_wake(pdev, PCI_D3hot, 0);
2137 pci_enable_wake(pdev, PCI_D3cold, 0);
2140 pci_save_state(pdev);
2141 pci_disable_device(pdev);
2143 pci_set_power_state(pdev, PCI_D3hot);
2148 static int atl1_resume(struct pci_dev *pdev)
2150 struct net_device *netdev = pci_get_drvdata(pdev);
2151 struct atl1_adapter *adapter = netdev_priv(netdev);
2154 pci_set_power_state(pdev, 0);
2155 pci_restore_state(pdev);
2157 ret_val = pci_enable_device(pdev);
2158 pci_enable_wake(pdev, PCI_D3hot, 0);
2159 pci_enable_wake(pdev, PCI_D3cold, 0);
2161 iowrite32(0, adapter->hw.hw_addr + REG_WOL_CTRL);
2162 atl1_reset(adapter);
2164 if (netif_running(netdev))
2166 netif_device_attach(netdev);
2168 atl1_via_workaround(adapter);
2173 #define atl1_suspend NULL
2174 #define atl1_resume NULL
2177 #ifdef CONFIG_NET_POLL_CONTROLLER
2178 static void atl1_poll_controller(struct net_device *netdev)
2180 disable_irq(netdev->irq);
2181 atl1_intr(netdev->irq, netdev);
2182 enable_irq(netdev->irq);
2187 * atl1_probe - Device Initialization Routine
2188 * @pdev: PCI device information struct
2189 * @ent: entry in atl1_pci_tbl
2191 * Returns 0 on success, negative on failure
2193 * atl1_probe initializes an adapter identified by a pci_dev structure.
2194 * The OS initialization, configuring of the adapter private structure,
2195 * and a hardware reset occur.
2197 static int __devinit atl1_probe(struct pci_dev *pdev,
2198 const struct pci_device_id *ent)
2200 struct net_device *netdev;
2201 struct atl1_adapter *adapter;
2202 static int cards_found = 0;
2203 bool pci_using_64 = true;
2206 err = pci_enable_device(pdev);
2210 err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
2212 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
2214 dev_err(&pdev->dev, "no usable DMA configuration\n");
2217 pci_using_64 = false;
2219 /* Mark all PCI regions associated with PCI device
2220 * pdev as being reserved by owner atl1_driver_name
2222 err = pci_request_regions(pdev, atl1_driver_name);
2224 goto err_request_regions;
2226 /* Enables bus-mastering on the device and calls
2227 * pcibios_set_master to do the needed arch specific settings
2229 pci_set_master(pdev);
2231 netdev = alloc_etherdev(sizeof(struct atl1_adapter));
2234 goto err_alloc_etherdev;
2236 SET_MODULE_OWNER(netdev);
2237 SET_NETDEV_DEV(netdev, &pdev->dev);
2239 pci_set_drvdata(pdev, netdev);
2240 adapter = netdev_priv(netdev);
2241 adapter->netdev = netdev;
2242 adapter->pdev = pdev;
2243 adapter->hw.back = adapter;
2245 adapter->hw.hw_addr = pci_iomap(pdev, 0, 0);
2246 if (!adapter->hw.hw_addr) {
2250 /* get device revision number */
2251 adapter->hw.dev_rev = ioread16(adapter->hw.hw_addr +
2252 (REG_MASTER_CTRL + 2));
2253 dev_info(&pdev->dev, "version %s\n", DRIVER_VERSION);
2255 /* set default ring resource counts */
2256 adapter->rfd_ring.count = adapter->rrd_ring.count = ATL1_DEFAULT_RFD;
2257 adapter->tpd_ring.count = ATL1_DEFAULT_TPD;
2259 adapter->mii.dev = netdev;
2260 adapter->mii.mdio_read = mdio_read;
2261 adapter->mii.mdio_write = mdio_write;
2262 adapter->mii.phy_id_mask = 0x1f;
2263 adapter->mii.reg_num_mask = 0x1f;
2265 netdev->open = &atl1_open;
2266 netdev->stop = &atl1_close;
2267 netdev->hard_start_xmit = &atl1_xmit_frame;
2268 netdev->get_stats = &atl1_get_stats;
2269 netdev->set_multicast_list = &atl1_set_multi;
2270 netdev->set_mac_address = &atl1_set_mac;
2271 netdev->change_mtu = &atl1_change_mtu;
2272 netdev->do_ioctl = &atl1_ioctl;
2273 netdev->tx_timeout = &atl1_tx_timeout;
2274 netdev->watchdog_timeo = 5 * HZ;
2275 #ifdef CONFIG_NET_POLL_CONTROLLER
2276 netdev->poll_controller = atl1_poll_controller;
2278 netdev->vlan_rx_register = atl1_vlan_rx_register;
2280 netdev->ethtool_ops = &atl1_ethtool_ops;
2281 adapter->bd_number = cards_found;
2282 adapter->pci_using_64 = pci_using_64;
2284 /* setup the private structure */
2285 err = atl1_sw_init(adapter);
2289 netdev->features = NETIF_F_HW_CSUM;
2290 netdev->features |= NETIF_F_SG;
2291 netdev->features |= (NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX);
2294 * FIXME - Until tso performance gets fixed, disable the feature.
2295 * Enable it with ethtool -K if desired.
2297 /* netdev->features |= NETIF_F_TSO; */
2300 netdev->features |= NETIF_F_HIGHDMA;
2302 netdev->features |= NETIF_F_LLTX;
2305 * patch for some L1 of old version,
2306 * the final version of L1 may not need these
2309 /* atl1_pcie_patch(adapter); */
2311 /* really reset GPHY core */
2312 iowrite16(0, adapter->hw.hw_addr + REG_GPHY_ENABLE);
2315 * reset the controller to
2316 * put the device in a known good starting state
2318 if (atl1_reset_hw(&adapter->hw)) {
2323 /* copy the MAC address out of the EEPROM */
2324 atl1_read_mac_addr(&adapter->hw);
2325 memcpy(netdev->dev_addr, adapter->hw.mac_addr, netdev->addr_len);
2327 if (!is_valid_ether_addr(netdev->dev_addr)) {
2332 atl1_check_options(adapter);
2334 /* pre-init the MAC, and setup link */
2335 err = atl1_init_hw(&adapter->hw);
2341 atl1_pcie_patch(adapter);
2342 /* assume we have no link for now */
2343 netif_carrier_off(netdev);
2344 netif_stop_queue(netdev);
2346 init_timer(&adapter->watchdog_timer);
2347 adapter->watchdog_timer.function = &atl1_watchdog;
2348 adapter->watchdog_timer.data = (unsigned long)adapter;
2350 init_timer(&adapter->phy_config_timer);
2351 adapter->phy_config_timer.function = &atl1_phy_config;
2352 adapter->phy_config_timer.data = (unsigned long)adapter;
2353 adapter->phy_timer_pending = false;
2355 INIT_WORK(&adapter->tx_timeout_task, atl1_tx_timeout_task);
2357 INIT_WORK(&adapter->link_chg_task, atl1_link_chg_task);
2359 INIT_WORK(&adapter->pcie_dma_to_rst_task, atl1_tx_timeout_task);
2361 err = register_netdev(netdev);
2366 atl1_via_workaround(adapter);
2370 pci_iounmap(pdev, adapter->hw.hw_addr);
2372 free_netdev(netdev);
2374 pci_release_regions(pdev);
2376 err_request_regions:
2377 pci_disable_device(pdev);
2382 * atl1_remove - Device Removal Routine
2383 * @pdev: PCI device information struct
2385 * atl1_remove is called by the PCI subsystem to alert the driver
2386 * that it should release a PCI device. The could be caused by a
2387 * Hot-Plug event, or because the driver is going to be removed from
2390 static void __devexit atl1_remove(struct pci_dev *pdev)
2392 struct net_device *netdev = pci_get_drvdata(pdev);
2393 struct atl1_adapter *adapter;
2394 /* Device not available. Return. */
2398 adapter = netdev_priv(netdev);
2400 /* Some atl1 boards lack persistent storage for their MAC, and get it
2401 * from the BIOS during POST. If we've been messing with the MAC
2402 * address, we need to save the permanent one.
2404 if (memcmp(adapter->hw.mac_addr, adapter->hw.perm_mac_addr, ETH_ALEN)) {
2405 memcpy(adapter->hw.mac_addr, adapter->hw.perm_mac_addr,
2407 atl1_set_mac_addr(&adapter->hw);
2410 iowrite16(0, adapter->hw.hw_addr + REG_GPHY_ENABLE);
2411 unregister_netdev(netdev);
2412 pci_iounmap(pdev, adapter->hw.hw_addr);
2413 pci_release_regions(pdev);
2414 free_netdev(netdev);
2415 pci_disable_device(pdev);
2418 static struct pci_driver atl1_driver = {
2419 .name = atl1_driver_name,
2420 .id_table = atl1_pci_tbl,
2421 .probe = atl1_probe,
2422 .remove = __devexit_p(atl1_remove),
2423 .suspend = atl1_suspend,
2424 .resume = atl1_resume
2428 * atl1_exit_module - Driver Exit Cleanup Routine
2430 * atl1_exit_module is called just before the driver is removed
2433 static void __exit atl1_exit_module(void)
2435 pci_unregister_driver(&atl1_driver);
2439 * atl1_init_module - Driver Registration Routine
2441 * atl1_init_module is the first routine called when the driver is
2442 * loaded. All it does is register with the PCI subsystem.
2444 static int __init atl1_init_module(void)
2446 return pci_register_driver(&atl1_driver);
2449 module_init(atl1_init_module);
2450 module_exit(atl1_exit_module);