2 * Copyright(c) 2007 Atheros Corporation. All rights reserved.
4 * Derived from Intel e1000 driver
5 * Copyright(c) 1999 - 2005 Intel Corporation. All rights reserved.
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the Free
9 * Software Foundation; either version 2 of the License, or (at your option)
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
17 * You should have received a copy of the GNU General Public License along with
18 * this program; if not, write to the Free Software Foundation, Inc., 59
19 * Temple Place - Suite 330, Boston, MA 02111-1307, USA.
24 #define DRV_VERSION "1.0.0.7-NAPI"
26 char atl1e_driver_name
[] = "ATL1E";
27 char atl1e_driver_version
[] = DRV_VERSION
;
28 #define PCI_DEVICE_ID_ATTANSIC_L1E 0x1026
30 * atl1e_pci_tbl - PCI Device ID Table
32 * Wildcard entries (PCI_ANY_ID) should come last
33 * Last entry must be all 0s
35 * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
36 * Class, Class Mask, private data (not used) }
38 static DEFINE_PCI_DEVICE_TABLE(atl1e_pci_tbl
) = {
39 {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC
, PCI_DEVICE_ID_ATTANSIC_L1E
)},
40 {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC
, 0x1066)},
41 /* required last entry */
44 MODULE_DEVICE_TABLE(pci
, atl1e_pci_tbl
);
46 MODULE_AUTHOR("Atheros Corporation, <xiong.huang@atheros.com>, Jie Yang <jie.yang@atheros.com>");
47 MODULE_DESCRIPTION("Atheros 1000M Ethernet Network Driver");
48 MODULE_LICENSE("GPL");
49 MODULE_VERSION(DRV_VERSION
);
51 static void atl1e_setup_mac_ctrl(struct atl1e_adapter
*adapter
);
54 atl1e_rx_page_vld_regs
[AT_MAX_RECEIVE_QUEUE
][AT_PAGE_NUM_PER_QUEUE
] =
56 {REG_HOST_RXF0_PAGE0_VLD
, REG_HOST_RXF0_PAGE1_VLD
},
57 {REG_HOST_RXF1_PAGE0_VLD
, REG_HOST_RXF1_PAGE1_VLD
},
58 {REG_HOST_RXF2_PAGE0_VLD
, REG_HOST_RXF2_PAGE1_VLD
},
59 {REG_HOST_RXF3_PAGE0_VLD
, REG_HOST_RXF3_PAGE1_VLD
}
62 static const u16 atl1e_rx_page_hi_addr_regs
[AT_MAX_RECEIVE_QUEUE
] =
64 REG_RXF0_BASE_ADDR_HI
,
65 REG_RXF1_BASE_ADDR_HI
,
66 REG_RXF2_BASE_ADDR_HI
,
71 atl1e_rx_page_lo_addr_regs
[AT_MAX_RECEIVE_QUEUE
][AT_PAGE_NUM_PER_QUEUE
] =
73 {REG_HOST_RXF0_PAGE0_LO
, REG_HOST_RXF0_PAGE1_LO
},
74 {REG_HOST_RXF1_PAGE0_LO
, REG_HOST_RXF1_PAGE1_LO
},
75 {REG_HOST_RXF2_PAGE0_LO
, REG_HOST_RXF2_PAGE1_LO
},
76 {REG_HOST_RXF3_PAGE0_LO
, REG_HOST_RXF3_PAGE1_LO
}
80 atl1e_rx_page_write_offset_regs
[AT_MAX_RECEIVE_QUEUE
][AT_PAGE_NUM_PER_QUEUE
] =
82 {REG_HOST_RXF0_MB0_LO
, REG_HOST_RXF0_MB1_LO
},
83 {REG_HOST_RXF1_MB0_LO
, REG_HOST_RXF1_MB1_LO
},
84 {REG_HOST_RXF2_MB0_LO
, REG_HOST_RXF2_MB1_LO
},
85 {REG_HOST_RXF3_MB0_LO
, REG_HOST_RXF3_MB1_LO
}
88 static const u16 atl1e_pay_load_size
[] = {
89 128, 256, 512, 1024, 2048, 4096,
93 * atl1e_irq_enable - Enable default interrupt generation settings
94 * @adapter: board private structure
96 static inline void atl1e_irq_enable(struct atl1e_adapter
*adapter
)
98 if (likely(atomic_dec_and_test(&adapter
->irq_sem
))) {
99 AT_WRITE_REG(&adapter
->hw
, REG_ISR
, 0);
100 AT_WRITE_REG(&adapter
->hw
, REG_IMR
, IMR_NORMAL_MASK
);
101 AT_WRITE_FLUSH(&adapter
->hw
);
106 * atl1e_irq_disable - Mask off interrupt generation on the NIC
107 * @adapter: board private structure
109 static inline void atl1e_irq_disable(struct atl1e_adapter
*adapter
)
111 atomic_inc(&adapter
->irq_sem
);
112 AT_WRITE_REG(&adapter
->hw
, REG_IMR
, 0);
113 AT_WRITE_FLUSH(&adapter
->hw
);
114 synchronize_irq(adapter
->pdev
->irq
);
118 * atl1e_irq_reset - reset interrupt confiure on the NIC
119 * @adapter: board private structure
121 static inline void atl1e_irq_reset(struct atl1e_adapter
*adapter
)
123 atomic_set(&adapter
->irq_sem
, 0);
124 AT_WRITE_REG(&adapter
->hw
, REG_ISR
, 0);
125 AT_WRITE_REG(&adapter
->hw
, REG_IMR
, 0);
126 AT_WRITE_FLUSH(&adapter
->hw
);
130 * atl1e_phy_config - Timer Call-back
131 * @data: pointer to netdev cast into an unsigned long
133 static void atl1e_phy_config(unsigned long data
)
135 struct atl1e_adapter
*adapter
= (struct atl1e_adapter
*) data
;
136 struct atl1e_hw
*hw
= &adapter
->hw
;
139 spin_lock_irqsave(&adapter
->mdio_lock
, flags
);
140 atl1e_restart_autoneg(hw
);
141 spin_unlock_irqrestore(&adapter
->mdio_lock
, flags
);
144 void atl1e_reinit_locked(struct atl1e_adapter
*adapter
)
147 WARN_ON(in_interrupt());
148 while (test_and_set_bit(__AT_RESETTING
, &adapter
->flags
))
152 clear_bit(__AT_RESETTING
, &adapter
->flags
);
155 static void atl1e_reset_task(struct work_struct
*work
)
157 struct atl1e_adapter
*adapter
;
158 adapter
= container_of(work
, struct atl1e_adapter
, reset_task
);
160 atl1e_reinit_locked(adapter
);
163 static int atl1e_check_link(struct atl1e_adapter
*adapter
)
165 struct atl1e_hw
*hw
= &adapter
->hw
;
166 struct net_device
*netdev
= adapter
->netdev
;
168 u16 speed
, duplex
, phy_data
;
170 /* MII_BMSR must read twice */
171 atl1e_read_phy_reg(hw
, MII_BMSR
, &phy_data
);
172 atl1e_read_phy_reg(hw
, MII_BMSR
, &phy_data
);
173 if ((phy_data
& BMSR_LSTATUS
) == 0) {
175 if (netif_carrier_ok(netdev
)) { /* old link state: Up */
178 value
= AT_READ_REG(hw
, REG_MAC_CTRL
);
179 value
&= ~MAC_CTRL_RX_EN
;
180 AT_WRITE_REG(hw
, REG_MAC_CTRL
, value
);
181 adapter
->link_speed
= SPEED_0
;
182 netif_carrier_off(netdev
);
183 netif_stop_queue(netdev
);
187 err
= atl1e_get_speed_and_duplex(hw
, &speed
, &duplex
);
191 /* link result is our setting */
192 if (adapter
->link_speed
!= speed
||
193 adapter
->link_duplex
!= duplex
) {
194 adapter
->link_speed
= speed
;
195 adapter
->link_duplex
= duplex
;
196 atl1e_setup_mac_ctrl(adapter
);
198 "NIC Link is Up <%d Mbps %s Duplex>\n",
200 adapter
->link_duplex
== FULL_DUPLEX
?
204 if (!netif_carrier_ok(netdev
)) {
205 /* Link down -> Up */
206 netif_carrier_on(netdev
);
207 netif_wake_queue(netdev
);
214 * atl1e_link_chg_task - deal with link change event Out of interrupt context
215 * @netdev: network interface device structure
217 static void atl1e_link_chg_task(struct work_struct
*work
)
219 struct atl1e_adapter
*adapter
;
222 adapter
= container_of(work
, struct atl1e_adapter
, link_chg_task
);
223 spin_lock_irqsave(&adapter
->mdio_lock
, flags
);
224 atl1e_check_link(adapter
);
225 spin_unlock_irqrestore(&adapter
->mdio_lock
, flags
);
228 static void atl1e_link_chg_event(struct atl1e_adapter
*adapter
)
230 struct net_device
*netdev
= adapter
->netdev
;
234 spin_lock(&adapter
->mdio_lock
);
235 atl1e_read_phy_reg(&adapter
->hw
, MII_BMSR
, &phy_data
);
236 atl1e_read_phy_reg(&adapter
->hw
, MII_BMSR
, &phy_data
);
237 spin_unlock(&adapter
->mdio_lock
);
238 link_up
= phy_data
& BMSR_LSTATUS
;
239 /* notify upper layer link down ASAP */
241 if (netif_carrier_ok(netdev
)) {
242 /* old link state: Up */
243 netdev_info(netdev
, "NIC Link is Down\n");
244 adapter
->link_speed
= SPEED_0
;
245 netif_stop_queue(netdev
);
248 schedule_work(&adapter
->link_chg_task
);
251 static void atl1e_del_timer(struct atl1e_adapter
*adapter
)
253 del_timer_sync(&adapter
->phy_config_timer
);
256 static void atl1e_cancel_work(struct atl1e_adapter
*adapter
)
258 cancel_work_sync(&adapter
->reset_task
);
259 cancel_work_sync(&adapter
->link_chg_task
);
263 * atl1e_tx_timeout - Respond to a Tx Hang
264 * @netdev: network interface device structure
266 static void atl1e_tx_timeout(struct net_device
*netdev
)
268 struct atl1e_adapter
*adapter
= netdev_priv(netdev
);
270 /* Do the reset outside of interrupt context */
271 schedule_work(&adapter
->reset_task
);
275 * atl1e_set_multi - Multicast and Promiscuous mode set
276 * @netdev: network interface device structure
278 * The set_multi entry point is called whenever the multicast address
279 * list or the network interface flags are updated. This routine is
280 * responsible for configuring the hardware for proper multicast,
281 * promiscuous mode, and all-multi behavior.
283 static void atl1e_set_multi(struct net_device
*netdev
)
285 struct atl1e_adapter
*adapter
= netdev_priv(netdev
);
286 struct atl1e_hw
*hw
= &adapter
->hw
;
287 struct netdev_hw_addr
*ha
;
288 u32 mac_ctrl_data
= 0;
291 /* Check for Promiscuous and All Multicast modes */
292 mac_ctrl_data
= AT_READ_REG(hw
, REG_MAC_CTRL
);
294 if (netdev
->flags
& IFF_PROMISC
) {
295 mac_ctrl_data
|= MAC_CTRL_PROMIS_EN
;
296 } else if (netdev
->flags
& IFF_ALLMULTI
) {
297 mac_ctrl_data
|= MAC_CTRL_MC_ALL_EN
;
298 mac_ctrl_data
&= ~MAC_CTRL_PROMIS_EN
;
300 mac_ctrl_data
&= ~(MAC_CTRL_PROMIS_EN
| MAC_CTRL_MC_ALL_EN
);
303 AT_WRITE_REG(hw
, REG_MAC_CTRL
, mac_ctrl_data
);
305 /* clear the old settings from the multicast hash table */
306 AT_WRITE_REG(hw
, REG_RX_HASH_TABLE
, 0);
307 AT_WRITE_REG_ARRAY(hw
, REG_RX_HASH_TABLE
, 1, 0);
309 /* comoute mc addresses' hash value ,and put it into hash table */
310 netdev_for_each_mc_addr(ha
, netdev
) {
311 hash_value
= atl1e_hash_mc_addr(hw
, ha
->addr
);
312 atl1e_hash_set(hw
, hash_value
);
316 static void atl1e_vlan_rx_register(struct net_device
*netdev
,
317 struct vlan_group
*grp
)
319 struct atl1e_adapter
*adapter
= netdev_priv(netdev
);
320 u32 mac_ctrl_data
= 0;
322 netdev_dbg(adapter
->netdev
, "%s\n", __func__
);
324 atl1e_irq_disable(adapter
);
326 adapter
->vlgrp
= grp
;
327 mac_ctrl_data
= AT_READ_REG(&adapter
->hw
, REG_MAC_CTRL
);
330 /* enable VLAN tag insert/strip */
331 mac_ctrl_data
|= MAC_CTRL_RMV_VLAN
;
333 /* disable VLAN tag insert/strip */
334 mac_ctrl_data
&= ~MAC_CTRL_RMV_VLAN
;
337 AT_WRITE_REG(&adapter
->hw
, REG_MAC_CTRL
, mac_ctrl_data
);
338 atl1e_irq_enable(adapter
);
341 static void atl1e_restore_vlan(struct atl1e_adapter
*adapter
)
343 netdev_dbg(adapter
->netdev
, "%s\n", __func__
);
344 atl1e_vlan_rx_register(adapter
->netdev
, adapter
->vlgrp
);
347 * atl1e_set_mac - Change the Ethernet Address of the NIC
348 * @netdev: network interface device structure
349 * @p: pointer to an address structure
351 * Returns 0 on success, negative on failure
353 static int atl1e_set_mac_addr(struct net_device
*netdev
, void *p
)
355 struct atl1e_adapter
*adapter
= netdev_priv(netdev
);
356 struct sockaddr
*addr
= p
;
358 if (!is_valid_ether_addr(addr
->sa_data
))
359 return -EADDRNOTAVAIL
;
361 if (netif_running(netdev
))
364 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
365 memcpy(adapter
->hw
.mac_addr
, addr
->sa_data
, netdev
->addr_len
);
367 atl1e_hw_set_mac_addr(&adapter
->hw
);
373 * atl1e_change_mtu - Change the Maximum Transfer Unit
374 * @netdev: network interface device structure
375 * @new_mtu: new value for maximum frame size
377 * Returns 0 on success, negative on failure
379 static int atl1e_change_mtu(struct net_device
*netdev
, int new_mtu
)
381 struct atl1e_adapter
*adapter
= netdev_priv(netdev
);
382 int old_mtu
= netdev
->mtu
;
383 int max_frame
= new_mtu
+ ETH_HLEN
+ ETH_FCS_LEN
+ VLAN_HLEN
;
385 if ((max_frame
< ETH_ZLEN
+ ETH_FCS_LEN
) ||
386 (max_frame
> MAX_JUMBO_FRAME_SIZE
)) {
387 netdev_warn(adapter
->netdev
, "invalid MTU setting\n");
391 if (old_mtu
!= new_mtu
&& netif_running(netdev
)) {
392 while (test_and_set_bit(__AT_RESETTING
, &adapter
->flags
))
394 netdev
->mtu
= new_mtu
;
395 adapter
->hw
.max_frame_size
= new_mtu
;
396 adapter
->hw
.rx_jumbo_th
= (max_frame
+ 7) >> 3;
399 clear_bit(__AT_RESETTING
, &adapter
->flags
);
405 * caller should hold mdio_lock
407 static int atl1e_mdio_read(struct net_device
*netdev
, int phy_id
, int reg_num
)
409 struct atl1e_adapter
*adapter
= netdev_priv(netdev
);
412 atl1e_read_phy_reg(&adapter
->hw
, reg_num
& MDIO_REG_ADDR_MASK
, &result
);
416 static void atl1e_mdio_write(struct net_device
*netdev
, int phy_id
,
417 int reg_num
, int val
)
419 struct atl1e_adapter
*adapter
= netdev_priv(netdev
);
421 atl1e_write_phy_reg(&adapter
->hw
, reg_num
& MDIO_REG_ADDR_MASK
, val
);
430 static int atl1e_mii_ioctl(struct net_device
*netdev
,
431 struct ifreq
*ifr
, int cmd
)
433 struct atl1e_adapter
*adapter
= netdev_priv(netdev
);
434 struct mii_ioctl_data
*data
= if_mii(ifr
);
438 if (!netif_running(netdev
))
441 spin_lock_irqsave(&adapter
->mdio_lock
, flags
);
448 if (atl1e_read_phy_reg(&adapter
->hw
, data
->reg_num
& 0x1F,
456 if (data
->reg_num
& ~(0x1F)) {
461 netdev_dbg(adapter
->netdev
, "<atl1e_mii_ioctl> write %x %x\n",
462 data
->reg_num
, data
->val_in
);
463 if (atl1e_write_phy_reg(&adapter
->hw
,
464 data
->reg_num
, data
->val_in
)) {
471 retval
= -EOPNOTSUPP
;
475 spin_unlock_irqrestore(&adapter
->mdio_lock
, flags
);
486 static int atl1e_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
492 return atl1e_mii_ioctl(netdev
, ifr
, cmd
);
498 static void atl1e_setup_pcicmd(struct pci_dev
*pdev
)
502 pci_read_config_word(pdev
, PCI_COMMAND
, &cmd
);
503 cmd
&= ~(PCI_COMMAND_INTX_DISABLE
| PCI_COMMAND_IO
);
504 cmd
|= (PCI_COMMAND_MEMORY
| PCI_COMMAND_MASTER
);
505 pci_write_config_word(pdev
, PCI_COMMAND
, cmd
);
508 * some motherboards BIOS(PXE/EFI) driver may set PME
509 * while they transfer control to OS (Windows/Linux)
510 * so we should clear this bit before NIC work normally
512 pci_write_config_dword(pdev
, REG_PM_CTRLSTAT
, 0);
517 * atl1e_alloc_queues - Allocate memory for all rings
518 * @adapter: board private structure to initialize
521 static int __devinit
atl1e_alloc_queues(struct atl1e_adapter
*adapter
)
527 * atl1e_sw_init - Initialize general software structures (struct atl1e_adapter)
528 * @adapter: board private structure to initialize
530 * atl1e_sw_init initializes the Adapter private data structure.
531 * Fields are initialized based on PCI device information and
532 * OS network device settings (MTU size).
534 static int __devinit
atl1e_sw_init(struct atl1e_adapter
*adapter
)
536 struct atl1e_hw
*hw
= &adapter
->hw
;
537 struct pci_dev
*pdev
= adapter
->pdev
;
538 u32 phy_status_data
= 0;
541 adapter
->link_speed
= SPEED_0
; /* hardware init */
542 adapter
->link_duplex
= FULL_DUPLEX
;
543 adapter
->num_rx_queues
= 1;
545 /* PCI config space info */
546 hw
->vendor_id
= pdev
->vendor
;
547 hw
->device_id
= pdev
->device
;
548 hw
->subsystem_vendor_id
= pdev
->subsystem_vendor
;
549 hw
->subsystem_id
= pdev
->subsystem_device
;
551 pci_read_config_byte(pdev
, PCI_REVISION_ID
, &hw
->revision_id
);
552 pci_read_config_word(pdev
, PCI_COMMAND
, &hw
->pci_cmd_word
);
554 phy_status_data
= AT_READ_REG(hw
, REG_PHY_STATUS
);
556 if (hw
->revision_id
>= 0xF0) {
557 hw
->nic_type
= athr_l2e_revB
;
559 if (phy_status_data
& PHY_STATUS_100M
)
560 hw
->nic_type
= athr_l1e
;
562 hw
->nic_type
= athr_l2e_revA
;
565 phy_status_data
= AT_READ_REG(hw
, REG_PHY_STATUS
);
567 if (phy_status_data
& PHY_STATUS_EMI_CA
)
572 hw
->phy_configured
= false;
573 hw
->preamble_len
= 7;
574 hw
->max_frame_size
= adapter
->netdev
->mtu
;
575 hw
->rx_jumbo_th
= (hw
->max_frame_size
+ ETH_HLEN
+
576 VLAN_HLEN
+ ETH_FCS_LEN
+ 7) >> 3;
578 hw
->rrs_type
= atl1e_rrs_disable
;
579 hw
->indirect_tab
= 0;
584 hw
->ict
= 50000; /* 100ms */
585 hw
->smb_timer
= 200000; /* 200ms */
588 hw
->tpd_thresh
= adapter
->tx_ring
.count
/ 2;
589 hw
->rx_count_down
= 4; /* 2us resolution */
590 hw
->tx_count_down
= hw
->imt
* 4 / 3;
591 hw
->dmar_block
= atl1e_dma_req_1024
;
592 hw
->dmaw_block
= atl1e_dma_req_1024
;
593 hw
->dmar_dly_cnt
= 15;
594 hw
->dmaw_dly_cnt
= 4;
596 if (atl1e_alloc_queues(adapter
)) {
597 netdev_err(adapter
->netdev
, "Unable to allocate memory for queues\n");
601 atomic_set(&adapter
->irq_sem
, 1);
602 spin_lock_init(&adapter
->mdio_lock
);
603 spin_lock_init(&adapter
->tx_lock
);
605 set_bit(__AT_DOWN
, &adapter
->flags
);
611 * atl1e_clean_tx_ring - Free Tx-skb
612 * @adapter: board private structure
614 static void atl1e_clean_tx_ring(struct atl1e_adapter
*adapter
)
616 struct atl1e_tx_ring
*tx_ring
= (struct atl1e_tx_ring
*)
618 struct atl1e_tx_buffer
*tx_buffer
= NULL
;
619 struct pci_dev
*pdev
= adapter
->pdev
;
620 u16 index
, ring_count
;
622 if (tx_ring
->desc
== NULL
|| tx_ring
->tx_buffer
== NULL
)
625 ring_count
= tx_ring
->count
;
626 /* first unmmap dma */
627 for (index
= 0; index
< ring_count
; index
++) {
628 tx_buffer
= &tx_ring
->tx_buffer
[index
];
629 if (tx_buffer
->dma
) {
630 if (tx_buffer
->flags
& ATL1E_TX_PCIMAP_SINGLE
)
631 pci_unmap_single(pdev
, tx_buffer
->dma
,
632 tx_buffer
->length
, PCI_DMA_TODEVICE
);
633 else if (tx_buffer
->flags
& ATL1E_TX_PCIMAP_PAGE
)
634 pci_unmap_page(pdev
, tx_buffer
->dma
,
635 tx_buffer
->length
, PCI_DMA_TODEVICE
);
639 /* second free skb */
640 for (index
= 0; index
< ring_count
; index
++) {
641 tx_buffer
= &tx_ring
->tx_buffer
[index
];
642 if (tx_buffer
->skb
) {
643 dev_kfree_skb_any(tx_buffer
->skb
);
644 tx_buffer
->skb
= NULL
;
647 /* Zero out Tx-buffers */
648 memset(tx_ring
->desc
, 0, sizeof(struct atl1e_tpd_desc
) *
650 memset(tx_ring
->tx_buffer
, 0, sizeof(struct atl1e_tx_buffer
) *
655 * atl1e_clean_rx_ring - Free rx-reservation skbs
656 * @adapter: board private structure
658 static void atl1e_clean_rx_ring(struct atl1e_adapter
*adapter
)
660 struct atl1e_rx_ring
*rx_ring
=
661 (struct atl1e_rx_ring
*)&adapter
->rx_ring
;
662 struct atl1e_rx_page_desc
*rx_page_desc
= rx_ring
->rx_page_desc
;
666 if (adapter
->ring_vir_addr
== NULL
)
668 /* Zero out the descriptor ring */
669 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
670 for (j
= 0; j
< AT_PAGE_NUM_PER_QUEUE
; j
++) {
671 if (rx_page_desc
[i
].rx_page
[j
].addr
!= NULL
) {
672 memset(rx_page_desc
[i
].rx_page
[j
].addr
, 0,
673 rx_ring
->real_page_size
);
679 static void atl1e_cal_ring_size(struct atl1e_adapter
*adapter
, u32
*ring_size
)
681 *ring_size
= ((u32
)(adapter
->tx_ring
.count
*
682 sizeof(struct atl1e_tpd_desc
) + 7
683 /* tx ring, qword align */
684 + adapter
->rx_ring
.real_page_size
* AT_PAGE_NUM_PER_QUEUE
*
685 adapter
->num_rx_queues
+ 31
686 /* rx ring, 32 bytes align */
687 + (1 + AT_PAGE_NUM_PER_QUEUE
* adapter
->num_rx_queues
) *
689 /* tx, rx cmd, dword align */
692 static void atl1e_init_ring_resources(struct atl1e_adapter
*adapter
)
694 struct atl1e_tx_ring
*tx_ring
= NULL
;
695 struct atl1e_rx_ring
*rx_ring
= NULL
;
697 tx_ring
= &adapter
->tx_ring
;
698 rx_ring
= &adapter
->rx_ring
;
700 rx_ring
->real_page_size
= adapter
->rx_ring
.page_size
701 + adapter
->hw
.max_frame_size
702 + ETH_HLEN
+ VLAN_HLEN
704 rx_ring
->real_page_size
= roundup(rx_ring
->real_page_size
, 32);
705 atl1e_cal_ring_size(adapter
, &adapter
->ring_size
);
707 adapter
->ring_vir_addr
= NULL
;
708 adapter
->rx_ring
.desc
= NULL
;
709 rwlock_init(&adapter
->tx_ring
.tx_lock
);
713 * Read / Write Ptr Initialize:
715 static void atl1e_init_ring_ptrs(struct atl1e_adapter
*adapter
)
717 struct atl1e_tx_ring
*tx_ring
= NULL
;
718 struct atl1e_rx_ring
*rx_ring
= NULL
;
719 struct atl1e_rx_page_desc
*rx_page_desc
= NULL
;
722 tx_ring
= &adapter
->tx_ring
;
723 rx_ring
= &adapter
->rx_ring
;
724 rx_page_desc
= rx_ring
->rx_page_desc
;
726 tx_ring
->next_to_use
= 0;
727 atomic_set(&tx_ring
->next_to_clean
, 0);
729 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
730 rx_page_desc
[i
].rx_using
= 0;
731 rx_page_desc
[i
].rx_nxseq
= 0;
732 for (j
= 0; j
< AT_PAGE_NUM_PER_QUEUE
; j
++) {
733 *rx_page_desc
[i
].rx_page
[j
].write_offset_addr
= 0;
734 rx_page_desc
[i
].rx_page
[j
].read_offset
= 0;
740 * atl1e_free_ring_resources - Free Tx / RX descriptor Resources
741 * @adapter: board private structure
743 * Free all transmit software resources
745 static void atl1e_free_ring_resources(struct atl1e_adapter
*adapter
)
747 struct pci_dev
*pdev
= adapter
->pdev
;
749 atl1e_clean_tx_ring(adapter
);
750 atl1e_clean_rx_ring(adapter
);
752 if (adapter
->ring_vir_addr
) {
753 pci_free_consistent(pdev
, adapter
->ring_size
,
754 adapter
->ring_vir_addr
, adapter
->ring_dma
);
755 adapter
->ring_vir_addr
= NULL
;
758 if (adapter
->tx_ring
.tx_buffer
) {
759 kfree(adapter
->tx_ring
.tx_buffer
);
760 adapter
->tx_ring
.tx_buffer
= NULL
;
765 * atl1e_setup_mem_resources - allocate Tx / RX descriptor resources
766 * @adapter: board private structure
768 * Return 0 on success, negative on failure
770 static int atl1e_setup_ring_resources(struct atl1e_adapter
*adapter
)
772 struct pci_dev
*pdev
= adapter
->pdev
;
773 struct atl1e_tx_ring
*tx_ring
;
774 struct atl1e_rx_ring
*rx_ring
;
775 struct atl1e_rx_page_desc
*rx_page_desc
;
780 if (adapter
->ring_vir_addr
!= NULL
)
781 return 0; /* alloced already */
783 tx_ring
= &adapter
->tx_ring
;
784 rx_ring
= &adapter
->rx_ring
;
786 /* real ring DMA buffer */
788 size
= adapter
->ring_size
;
789 adapter
->ring_vir_addr
= pci_alloc_consistent(pdev
,
790 adapter
->ring_size
, &adapter
->ring_dma
);
792 if (adapter
->ring_vir_addr
== NULL
) {
793 netdev_err(adapter
->netdev
,
794 "pci_alloc_consistent failed, size = D%d\n", size
);
798 memset(adapter
->ring_vir_addr
, 0, adapter
->ring_size
);
800 rx_page_desc
= rx_ring
->rx_page_desc
;
803 tx_ring
->dma
= roundup(adapter
->ring_dma
, 8);
804 offset
= tx_ring
->dma
- adapter
->ring_dma
;
805 tx_ring
->desc
= (struct atl1e_tpd_desc
*)
806 (adapter
->ring_vir_addr
+ offset
);
807 size
= sizeof(struct atl1e_tx_buffer
) * (tx_ring
->count
);
808 tx_ring
->tx_buffer
= kzalloc(size
, GFP_KERNEL
);
809 if (tx_ring
->tx_buffer
== NULL
) {
810 netdev_err(adapter
->netdev
, "kzalloc failed, size = D%d\n",
817 offset
+= (sizeof(struct atl1e_tpd_desc
) * tx_ring
->count
);
818 offset
= roundup(offset
, 32);
820 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
821 for (j
= 0; j
< AT_PAGE_NUM_PER_QUEUE
; j
++) {
822 rx_page_desc
[i
].rx_page
[j
].dma
=
823 adapter
->ring_dma
+ offset
;
824 rx_page_desc
[i
].rx_page
[j
].addr
=
825 adapter
->ring_vir_addr
+ offset
;
826 offset
+= rx_ring
->real_page_size
;
830 /* Init CMB dma address */
831 tx_ring
->cmb_dma
= adapter
->ring_dma
+ offset
;
832 tx_ring
->cmb
= (u32
*)(adapter
->ring_vir_addr
+ offset
);
833 offset
+= sizeof(u32
);
835 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
836 for (j
= 0; j
< AT_PAGE_NUM_PER_QUEUE
; j
++) {
837 rx_page_desc
[i
].rx_page
[j
].write_offset_dma
=
838 adapter
->ring_dma
+ offset
;
839 rx_page_desc
[i
].rx_page
[j
].write_offset_addr
=
840 adapter
->ring_vir_addr
+ offset
;
841 offset
+= sizeof(u32
);
845 if (unlikely(offset
> adapter
->ring_size
)) {
846 netdev_err(adapter
->netdev
, "offset(%d) > ring size(%d) !!\n",
847 offset
, adapter
->ring_size
);
854 if (adapter
->ring_vir_addr
!= NULL
) {
855 pci_free_consistent(pdev
, adapter
->ring_size
,
856 adapter
->ring_vir_addr
, adapter
->ring_dma
);
857 adapter
->ring_vir_addr
= NULL
;
862 static inline void atl1e_configure_des_ring(const struct atl1e_adapter
*adapter
)
865 struct atl1e_hw
*hw
= (struct atl1e_hw
*)&adapter
->hw
;
866 struct atl1e_rx_ring
*rx_ring
=
867 (struct atl1e_rx_ring
*)&adapter
->rx_ring
;
868 struct atl1e_tx_ring
*tx_ring
=
869 (struct atl1e_tx_ring
*)&adapter
->tx_ring
;
870 struct atl1e_rx_page_desc
*rx_page_desc
= NULL
;
873 AT_WRITE_REG(hw
, REG_DESC_BASE_ADDR_HI
,
874 (u32
)((adapter
->ring_dma
& AT_DMA_HI_ADDR_MASK
) >> 32));
875 AT_WRITE_REG(hw
, REG_TPD_BASE_ADDR_LO
,
876 (u32
)((tx_ring
->dma
) & AT_DMA_LO_ADDR_MASK
));
877 AT_WRITE_REG(hw
, REG_TPD_RING_SIZE
, (u16
)(tx_ring
->count
));
878 AT_WRITE_REG(hw
, REG_HOST_TX_CMB_LO
,
879 (u32
)((tx_ring
->cmb_dma
) & AT_DMA_LO_ADDR_MASK
));
881 rx_page_desc
= rx_ring
->rx_page_desc
;
882 /* RXF Page Physical address / Page Length */
883 for (i
= 0; i
< AT_MAX_RECEIVE_QUEUE
; i
++) {
884 AT_WRITE_REG(hw
, atl1e_rx_page_hi_addr_regs
[i
],
885 (u32
)((adapter
->ring_dma
&
886 AT_DMA_HI_ADDR_MASK
) >> 32));
887 for (j
= 0; j
< AT_PAGE_NUM_PER_QUEUE
; j
++) {
891 page_phy_addr
= rx_page_desc
[i
].rx_page
[j
].dma
;
893 rx_page_desc
[i
].rx_page
[j
].write_offset_dma
;
895 AT_WRITE_REG(hw
, atl1e_rx_page_lo_addr_regs
[i
][j
],
896 page_phy_addr
& AT_DMA_LO_ADDR_MASK
);
897 AT_WRITE_REG(hw
, atl1e_rx_page_write_offset_regs
[i
][j
],
898 offset_phy_addr
& AT_DMA_LO_ADDR_MASK
);
899 AT_WRITE_REGB(hw
, atl1e_rx_page_vld_regs
[i
][j
], 1);
903 AT_WRITE_REG(hw
, REG_HOST_RXFPAGE_SIZE
, rx_ring
->page_size
);
904 /* Load all of base address above */
905 AT_WRITE_REG(hw
, REG_LOAD_PTR
, 1);
908 static inline void atl1e_configure_tx(struct atl1e_adapter
*adapter
)
910 struct atl1e_hw
*hw
= (struct atl1e_hw
*)&adapter
->hw
;
911 u32 dev_ctrl_data
= 0;
912 u32 max_pay_load
= 0;
913 u32 jumbo_thresh
= 0;
914 u32 extra_size
= 0; /* Jumbo frame threshold in QWORD unit */
916 /* configure TXQ param */
917 if (hw
->nic_type
!= athr_l2e_revB
) {
918 extra_size
= ETH_HLEN
+ VLAN_HLEN
+ ETH_FCS_LEN
;
919 if (hw
->max_frame_size
<= 1500) {
920 jumbo_thresh
= hw
->max_frame_size
+ extra_size
;
921 } else if (hw
->max_frame_size
< 6*1024) {
923 (hw
->max_frame_size
+ extra_size
) * 2 / 3;
925 jumbo_thresh
= (hw
->max_frame_size
+ extra_size
) / 2;
927 AT_WRITE_REG(hw
, REG_TX_EARLY_TH
, (jumbo_thresh
+ 7) >> 3);
930 dev_ctrl_data
= AT_READ_REG(hw
, REG_DEVICE_CTRL
);
932 max_pay_load
= ((dev_ctrl_data
>> DEVICE_CTRL_MAX_PAYLOAD_SHIFT
)) &
933 DEVICE_CTRL_MAX_PAYLOAD_MASK
;
935 hw
->dmaw_block
= min(max_pay_load
, hw
->dmaw_block
);
937 max_pay_load
= ((dev_ctrl_data
>> DEVICE_CTRL_MAX_RREQ_SZ_SHIFT
)) &
938 DEVICE_CTRL_MAX_RREQ_SZ_MASK
;
939 hw
->dmar_block
= min(max_pay_load
, hw
->dmar_block
);
941 if (hw
->nic_type
!= athr_l2e_revB
)
942 AT_WRITE_REGW(hw
, REG_TXQ_CTRL
+ 2,
943 atl1e_pay_load_size
[hw
->dmar_block
]);
945 AT_WRITE_REGW(hw
, REG_TXQ_CTRL
,
946 (((u16
)hw
->tpd_burst
& TXQ_CTRL_NUM_TPD_BURST_MASK
)
947 << TXQ_CTRL_NUM_TPD_BURST_SHIFT
)
948 | TXQ_CTRL_ENH_MODE
| TXQ_CTRL_EN
);
951 static inline void atl1e_configure_rx(struct atl1e_adapter
*adapter
)
953 struct atl1e_hw
*hw
= (struct atl1e_hw
*)&adapter
->hw
;
957 u32 rxf_thresh_data
= 0;
958 u32 rxq_ctrl_data
= 0;
960 if (hw
->nic_type
!= athr_l2e_revB
) {
961 AT_WRITE_REGW(hw
, REG_RXQ_JMBOSZ_RRDTIM
,
962 (u16
)((hw
->rx_jumbo_th
& RXQ_JMBOSZ_TH_MASK
) <<
963 RXQ_JMBOSZ_TH_SHIFT
|
964 (1 & RXQ_JMBO_LKAH_MASK
) <<
965 RXQ_JMBO_LKAH_SHIFT
));
967 rxf_len
= AT_READ_REG(hw
, REG_SRAM_RXF_LEN
);
968 rxf_high
= rxf_len
* 4 / 5;
969 rxf_low
= rxf_len
/ 5;
970 rxf_thresh_data
= ((rxf_high
& RXQ_RXF_PAUSE_TH_HI_MASK
)
971 << RXQ_RXF_PAUSE_TH_HI_SHIFT
) |
972 ((rxf_low
& RXQ_RXF_PAUSE_TH_LO_MASK
)
973 << RXQ_RXF_PAUSE_TH_LO_SHIFT
);
975 AT_WRITE_REG(hw
, REG_RXQ_RXF_PAUSE_THRESH
, rxf_thresh_data
);
979 AT_WRITE_REG(hw
, REG_IDT_TABLE
, hw
->indirect_tab
);
980 AT_WRITE_REG(hw
, REG_BASE_CPU_NUMBER
, hw
->base_cpu
);
982 if (hw
->rrs_type
& atl1e_rrs_ipv4
)
983 rxq_ctrl_data
|= RXQ_CTRL_HASH_TYPE_IPV4
;
985 if (hw
->rrs_type
& atl1e_rrs_ipv4_tcp
)
986 rxq_ctrl_data
|= RXQ_CTRL_HASH_TYPE_IPV4_TCP
;
988 if (hw
->rrs_type
& atl1e_rrs_ipv6
)
989 rxq_ctrl_data
|= RXQ_CTRL_HASH_TYPE_IPV6
;
991 if (hw
->rrs_type
& atl1e_rrs_ipv6_tcp
)
992 rxq_ctrl_data
|= RXQ_CTRL_HASH_TYPE_IPV6_TCP
;
994 if (hw
->rrs_type
!= atl1e_rrs_disable
)
996 (RXQ_CTRL_HASH_ENABLE
| RXQ_CTRL_RSS_MODE_MQUESINT
);
998 rxq_ctrl_data
|= RXQ_CTRL_IPV6_XSUM_VERIFY_EN
| RXQ_CTRL_PBA_ALIGN_32
|
999 RXQ_CTRL_CUT_THRU_EN
| RXQ_CTRL_EN
;
1001 AT_WRITE_REG(hw
, REG_RXQ_CTRL
, rxq_ctrl_data
);
1004 static inline void atl1e_configure_dma(struct atl1e_adapter
*adapter
)
1006 struct atl1e_hw
*hw
= &adapter
->hw
;
1007 u32 dma_ctrl_data
= 0;
1009 dma_ctrl_data
= DMA_CTRL_RXCMB_EN
;
1010 dma_ctrl_data
|= (((u32
)hw
->dmar_block
) & DMA_CTRL_DMAR_BURST_LEN_MASK
)
1011 << DMA_CTRL_DMAR_BURST_LEN_SHIFT
;
1012 dma_ctrl_data
|= (((u32
)hw
->dmaw_block
) & DMA_CTRL_DMAW_BURST_LEN_MASK
)
1013 << DMA_CTRL_DMAW_BURST_LEN_SHIFT
;
1014 dma_ctrl_data
|= DMA_CTRL_DMAR_REQ_PRI
| DMA_CTRL_DMAR_OUT_ORDER
;
1015 dma_ctrl_data
|= (((u32
)hw
->dmar_dly_cnt
) & DMA_CTRL_DMAR_DLY_CNT_MASK
)
1016 << DMA_CTRL_DMAR_DLY_CNT_SHIFT
;
1017 dma_ctrl_data
|= (((u32
)hw
->dmaw_dly_cnt
) & DMA_CTRL_DMAW_DLY_CNT_MASK
)
1018 << DMA_CTRL_DMAW_DLY_CNT_SHIFT
;
1020 AT_WRITE_REG(hw
, REG_DMA_CTRL
, dma_ctrl_data
);
1023 static void atl1e_setup_mac_ctrl(struct atl1e_adapter
*adapter
)
1026 struct atl1e_hw
*hw
= &adapter
->hw
;
1027 struct net_device
*netdev
= adapter
->netdev
;
1029 /* Config MAC CTRL Register */
1030 value
= MAC_CTRL_TX_EN
|
1033 if (FULL_DUPLEX
== adapter
->link_duplex
)
1034 value
|= MAC_CTRL_DUPLX
;
1036 value
|= ((u32
)((SPEED_1000
== adapter
->link_speed
) ?
1037 MAC_CTRL_SPEED_1000
: MAC_CTRL_SPEED_10_100
) <<
1038 MAC_CTRL_SPEED_SHIFT
);
1039 value
|= (MAC_CTRL_TX_FLOW
| MAC_CTRL_RX_FLOW
);
1041 value
|= (MAC_CTRL_ADD_CRC
| MAC_CTRL_PAD
);
1042 value
|= (((u32
)adapter
->hw
.preamble_len
&
1043 MAC_CTRL_PRMLEN_MASK
) << MAC_CTRL_PRMLEN_SHIFT
);
1046 value
|= MAC_CTRL_RMV_VLAN
;
1048 value
|= MAC_CTRL_BC_EN
;
1049 if (netdev
->flags
& IFF_PROMISC
)
1050 value
|= MAC_CTRL_PROMIS_EN
;
1051 if (netdev
->flags
& IFF_ALLMULTI
)
1052 value
|= MAC_CTRL_MC_ALL_EN
;
1054 AT_WRITE_REG(hw
, REG_MAC_CTRL
, value
);
1058 * atl1e_configure - Configure Transmit&Receive Unit after Reset
1059 * @adapter: board private structure
1061 * Configure the Tx /Rx unit of the MAC after a reset.
1063 static int atl1e_configure(struct atl1e_adapter
*adapter
)
1065 struct atl1e_hw
*hw
= &adapter
->hw
;
1067 u32 intr_status_data
= 0;
1069 /* clear interrupt status */
1070 AT_WRITE_REG(hw
, REG_ISR
, ~0);
1072 /* 1. set MAC Address */
1073 atl1e_hw_set_mac_addr(hw
);
1075 /* 2. Init the Multicast HASH table done by set_muti */
1077 /* 3. Clear any WOL status */
1078 AT_WRITE_REG(hw
, REG_WOL_CTRL
, 0);
1080 /* 4. Descripter Ring BaseMem/Length/Read ptr/Write ptr
1081 * TPD Ring/SMB/RXF0 Page CMBs, they use the same
1082 * High 32bits memory */
1083 atl1e_configure_des_ring(adapter
);
1085 /* 5. set Interrupt Moderator Timer */
1086 AT_WRITE_REGW(hw
, REG_IRQ_MODU_TIMER_INIT
, hw
->imt
);
1087 AT_WRITE_REGW(hw
, REG_IRQ_MODU_TIMER2_INIT
, hw
->imt
);
1088 AT_WRITE_REG(hw
, REG_MASTER_CTRL
, MASTER_CTRL_LED_MODE
|
1089 MASTER_CTRL_ITIMER_EN
| MASTER_CTRL_ITIMER2_EN
);
1091 /* 6. rx/tx threshold to trig interrupt */
1092 AT_WRITE_REGW(hw
, REG_TRIG_RRD_THRESH
, hw
->rrd_thresh
);
1093 AT_WRITE_REGW(hw
, REG_TRIG_TPD_THRESH
, hw
->tpd_thresh
);
1094 AT_WRITE_REGW(hw
, REG_TRIG_RXTIMER
, hw
->rx_count_down
);
1095 AT_WRITE_REGW(hw
, REG_TRIG_TXTIMER
, hw
->tx_count_down
);
1097 /* 7. set Interrupt Clear Timer */
1098 AT_WRITE_REGW(hw
, REG_CMBDISDMA_TIMER
, hw
->ict
);
1101 AT_WRITE_REG(hw
, REG_MTU
, hw
->max_frame_size
+ ETH_HLEN
+
1102 VLAN_HLEN
+ ETH_FCS_LEN
);
1104 /* 9. config TXQ early tx threshold */
1105 atl1e_configure_tx(adapter
);
1107 /* 10. config RXQ */
1108 atl1e_configure_rx(adapter
);
1110 /* 11. config DMA Engine */
1111 atl1e_configure_dma(adapter
);
1113 /* 12. smb timer to trig interrupt */
1114 AT_WRITE_REG(hw
, REG_SMB_STAT_TIMER
, hw
->smb_timer
);
1116 intr_status_data
= AT_READ_REG(hw
, REG_ISR
);
1117 if (unlikely((intr_status_data
& ISR_PHY_LINKDOWN
) != 0)) {
1118 netdev_err(adapter
->netdev
,
1119 "atl1e_configure failed, PCIE phy link down\n");
1123 AT_WRITE_REG(hw
, REG_ISR
, 0x7fffffff);
1128 * atl1e_get_stats - Get System Network Statistics
1129 * @netdev: network interface device structure
1131 * Returns the address of the device statistics structure.
1132 * The statistics are actually updated from the timer callback.
1134 static struct net_device_stats
*atl1e_get_stats(struct net_device
*netdev
)
1136 struct atl1e_adapter
*adapter
= netdev_priv(netdev
);
1137 struct atl1e_hw_stats
*hw_stats
= &adapter
->hw_stats
;
1138 struct net_device_stats
*net_stats
= &netdev
->stats
;
1140 net_stats
->rx_packets
= hw_stats
->rx_ok
;
1141 net_stats
->tx_packets
= hw_stats
->tx_ok
;
1142 net_stats
->rx_bytes
= hw_stats
->rx_byte_cnt
;
1143 net_stats
->tx_bytes
= hw_stats
->tx_byte_cnt
;
1144 net_stats
->multicast
= hw_stats
->rx_mcast
;
1145 net_stats
->collisions
= hw_stats
->tx_1_col
+
1146 hw_stats
->tx_2_col
* 2 +
1147 hw_stats
->tx_late_col
+ hw_stats
->tx_abort_col
;
1149 net_stats
->rx_errors
= hw_stats
->rx_frag
+ hw_stats
->rx_fcs_err
+
1150 hw_stats
->rx_len_err
+ hw_stats
->rx_sz_ov
+
1151 hw_stats
->rx_rrd_ov
+ hw_stats
->rx_align_err
;
1152 net_stats
->rx_fifo_errors
= hw_stats
->rx_rxf_ov
;
1153 net_stats
->rx_length_errors
= hw_stats
->rx_len_err
;
1154 net_stats
->rx_crc_errors
= hw_stats
->rx_fcs_err
;
1155 net_stats
->rx_frame_errors
= hw_stats
->rx_align_err
;
1156 net_stats
->rx_over_errors
= hw_stats
->rx_rrd_ov
+ hw_stats
->rx_rxf_ov
;
1158 net_stats
->rx_missed_errors
= hw_stats
->rx_rrd_ov
+ hw_stats
->rx_rxf_ov
;
1160 net_stats
->tx_errors
= hw_stats
->tx_late_col
+ hw_stats
->tx_abort_col
+
1161 hw_stats
->tx_underrun
+ hw_stats
->tx_trunc
;
1162 net_stats
->tx_fifo_errors
= hw_stats
->tx_underrun
;
1163 net_stats
->tx_aborted_errors
= hw_stats
->tx_abort_col
;
1164 net_stats
->tx_window_errors
= hw_stats
->tx_late_col
;
1169 static void atl1e_update_hw_stats(struct atl1e_adapter
*adapter
)
1171 u16 hw_reg_addr
= 0;
1172 unsigned long *stats_item
= NULL
;
1174 /* update rx status */
1175 hw_reg_addr
= REG_MAC_RX_STATUS_BIN
;
1176 stats_item
= &adapter
->hw_stats
.rx_ok
;
1177 while (hw_reg_addr
<= REG_MAC_RX_STATUS_END
) {
1178 *stats_item
+= AT_READ_REG(&adapter
->hw
, hw_reg_addr
);
1182 /* update tx status */
1183 hw_reg_addr
= REG_MAC_TX_STATUS_BIN
;
1184 stats_item
= &adapter
->hw_stats
.tx_ok
;
1185 while (hw_reg_addr
<= REG_MAC_TX_STATUS_END
) {
1186 *stats_item
+= AT_READ_REG(&adapter
->hw
, hw_reg_addr
);
1192 static inline void atl1e_clear_phy_int(struct atl1e_adapter
*adapter
)
1196 spin_lock(&adapter
->mdio_lock
);
1197 atl1e_read_phy_reg(&adapter
->hw
, MII_INT_STATUS
, &phy_data
);
1198 spin_unlock(&adapter
->mdio_lock
);
1201 static bool atl1e_clean_tx_irq(struct atl1e_adapter
*adapter
)
1203 struct atl1e_tx_ring
*tx_ring
= (struct atl1e_tx_ring
*)
1205 struct atl1e_tx_buffer
*tx_buffer
= NULL
;
1206 u16 hw_next_to_clean
= AT_READ_REGW(&adapter
->hw
, REG_TPD_CONS_IDX
);
1207 u16 next_to_clean
= atomic_read(&tx_ring
->next_to_clean
);
1209 while (next_to_clean
!= hw_next_to_clean
) {
1210 tx_buffer
= &tx_ring
->tx_buffer
[next_to_clean
];
1211 if (tx_buffer
->dma
) {
1212 if (tx_buffer
->flags
& ATL1E_TX_PCIMAP_SINGLE
)
1213 pci_unmap_single(adapter
->pdev
, tx_buffer
->dma
,
1214 tx_buffer
->length
, PCI_DMA_TODEVICE
);
1215 else if (tx_buffer
->flags
& ATL1E_TX_PCIMAP_PAGE
)
1216 pci_unmap_page(adapter
->pdev
, tx_buffer
->dma
,
1217 tx_buffer
->length
, PCI_DMA_TODEVICE
);
1221 if (tx_buffer
->skb
) {
1222 dev_kfree_skb_irq(tx_buffer
->skb
);
1223 tx_buffer
->skb
= NULL
;
1226 if (++next_to_clean
== tx_ring
->count
)
1230 atomic_set(&tx_ring
->next_to_clean
, next_to_clean
);
1232 if (netif_queue_stopped(adapter
->netdev
) &&
1233 netif_carrier_ok(adapter
->netdev
)) {
1234 netif_wake_queue(adapter
->netdev
);
1241 * atl1e_intr - Interrupt Handler
1242 * @irq: interrupt number
1243 * @data: pointer to a network interface device structure
1244 * @pt_regs: CPU registers structure
1246 static irqreturn_t
atl1e_intr(int irq
, void *data
)
1248 struct net_device
*netdev
= data
;
1249 struct atl1e_adapter
*adapter
= netdev_priv(netdev
);
1250 struct atl1e_hw
*hw
= &adapter
->hw
;
1251 int max_ints
= AT_MAX_INT_WORK
;
1252 int handled
= IRQ_NONE
;
1256 status
= AT_READ_REG(hw
, REG_ISR
);
1257 if ((status
& IMR_NORMAL_MASK
) == 0 ||
1258 (status
& ISR_DIS_INT
) != 0) {
1259 if (max_ints
!= AT_MAX_INT_WORK
)
1260 handled
= IRQ_HANDLED
;
1264 if (status
& ISR_GPHY
)
1265 atl1e_clear_phy_int(adapter
);
1267 AT_WRITE_REG(hw
, REG_ISR
, status
| ISR_DIS_INT
);
1269 handled
= IRQ_HANDLED
;
1270 /* check if PCIE PHY Link down */
1271 if (status
& ISR_PHY_LINKDOWN
) {
1272 netdev_err(adapter
->netdev
,
1273 "pcie phy linkdown %x\n", status
);
1274 if (netif_running(adapter
->netdev
)) {
1276 atl1e_irq_reset(adapter
);
1277 schedule_work(&adapter
->reset_task
);
1282 /* check if DMA read/write error */
1283 if (status
& (ISR_DMAR_TO_RST
| ISR_DMAW_TO_RST
)) {
1284 netdev_err(adapter
->netdev
,
1285 "PCIE DMA RW error (status = 0x%x)\n",
1287 atl1e_irq_reset(adapter
);
1288 schedule_work(&adapter
->reset_task
);
1292 if (status
& ISR_SMB
)
1293 atl1e_update_hw_stats(adapter
);
1296 if (status
& (ISR_GPHY
| ISR_MANUAL
)) {
1297 netdev
->stats
.tx_carrier_errors
++;
1298 atl1e_link_chg_event(adapter
);
1302 /* transmit event */
1303 if (status
& ISR_TX_EVENT
)
1304 atl1e_clean_tx_irq(adapter
);
1306 if (status
& ISR_RX_EVENT
) {
1308 * disable rx interrupts, without
1309 * the synchronize_irq bit
1311 AT_WRITE_REG(hw
, REG_IMR
,
1312 IMR_NORMAL_MASK
& ~ISR_RX_EVENT
);
1314 if (likely(napi_schedule_prep(
1316 __napi_schedule(&adapter
->napi
);
1318 } while (--max_ints
> 0);
1319 /* re-enable Interrupt*/
1320 AT_WRITE_REG(&adapter
->hw
, REG_ISR
, 0);
1325 static inline void atl1e_rx_checksum(struct atl1e_adapter
*adapter
,
1326 struct sk_buff
*skb
, struct atl1e_recv_ret_status
*prrs
)
1328 u8
*packet
= (u8
*)(prrs
+ 1);
1330 u16 head_len
= ETH_HLEN
;
1334 skb_checksum_none_assert(skb
);
1335 pkt_flags
= prrs
->pkt_flag
;
1336 err_flags
= prrs
->err_flag
;
1337 if (((pkt_flags
& RRS_IS_IPV4
) || (pkt_flags
& RRS_IS_IPV6
)) &&
1338 ((pkt_flags
& RRS_IS_TCP
) || (pkt_flags
& RRS_IS_UDP
))) {
1339 if (pkt_flags
& RRS_IS_IPV4
) {
1340 if (pkt_flags
& RRS_IS_802_3
)
1342 iph
= (struct iphdr
*) (packet
+ head_len
);
1343 if (iph
->frag_off
!= 0 && !(pkt_flags
& RRS_IS_IP_DF
))
1346 if (!(err_flags
& (RRS_ERR_IP_CSUM
| RRS_ERR_L4_CSUM
))) {
1347 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
1356 static struct atl1e_rx_page
*atl1e_get_rx_page(struct atl1e_adapter
*adapter
,
1359 struct atl1e_rx_page_desc
*rx_page_desc
=
1360 (struct atl1e_rx_page_desc
*) adapter
->rx_ring
.rx_page_desc
;
1361 u8 rx_using
= rx_page_desc
[que
].rx_using
;
1363 return (struct atl1e_rx_page
*)&(rx_page_desc
[que
].rx_page
[rx_using
]);
1366 static void atl1e_clean_rx_irq(struct atl1e_adapter
*adapter
, u8 que
,
1367 int *work_done
, int work_to_do
)
1369 struct net_device
*netdev
= adapter
->netdev
;
1370 struct atl1e_rx_ring
*rx_ring
= (struct atl1e_rx_ring
*)
1372 struct atl1e_rx_page_desc
*rx_page_desc
=
1373 (struct atl1e_rx_page_desc
*) rx_ring
->rx_page_desc
;
1374 struct sk_buff
*skb
= NULL
;
1375 struct atl1e_rx_page
*rx_page
= atl1e_get_rx_page(adapter
, que
);
1376 u32 packet_size
, write_offset
;
1377 struct atl1e_recv_ret_status
*prrs
;
1379 write_offset
= *(rx_page
->write_offset_addr
);
1380 if (likely(rx_page
->read_offset
< write_offset
)) {
1382 if (*work_done
>= work_to_do
)
1385 /* get new packet's rrs */
1386 prrs
= (struct atl1e_recv_ret_status
*) (rx_page
->addr
+
1387 rx_page
->read_offset
);
1388 /* check sequence number */
1389 if (prrs
->seq_num
!= rx_page_desc
[que
].rx_nxseq
) {
1391 "rx sequence number error (rx=%d) (expect=%d)\n",
1393 rx_page_desc
[que
].rx_nxseq
);
1394 rx_page_desc
[que
].rx_nxseq
++;
1395 /* just for debug use */
1396 AT_WRITE_REG(&adapter
->hw
, REG_DEBUG_DATA0
,
1397 (((u32
)prrs
->seq_num
) << 16) |
1398 rx_page_desc
[que
].rx_nxseq
);
1401 rx_page_desc
[que
].rx_nxseq
++;
1404 if (prrs
->pkt_flag
& RRS_IS_ERR_FRAME
) {
1405 if (prrs
->err_flag
& (RRS_ERR_BAD_CRC
|
1406 RRS_ERR_DRIBBLE
| RRS_ERR_CODE
|
1408 /* hardware error, discard this packet*/
1410 "rx packet desc error %x\n",
1411 *((u32
*)prrs
+ 1));
1416 packet_size
= ((prrs
->word1
>> RRS_PKT_SIZE_SHIFT
) &
1417 RRS_PKT_SIZE_MASK
) - 4; /* CRC */
1418 skb
= netdev_alloc_skb_ip_align(netdev
, packet_size
);
1421 "Memory squeeze, deferring packet\n");
1424 memcpy(skb
->data
, (u8
*)(prrs
+ 1), packet_size
);
1425 skb_put(skb
, packet_size
);
1426 skb
->protocol
= eth_type_trans(skb
, netdev
);
1427 atl1e_rx_checksum(adapter
, skb
, prrs
);
1429 if (unlikely(adapter
->vlgrp
&&
1430 (prrs
->pkt_flag
& RRS_IS_VLAN_TAG
))) {
1431 u16 vlan_tag
= (prrs
->vtag
>> 4) |
1432 ((prrs
->vtag
& 7) << 13) |
1433 ((prrs
->vtag
& 8) << 9);
1435 "RXD VLAN TAG<RRD>=0x%04x\n",
1437 vlan_hwaccel_receive_skb(skb
, adapter
->vlgrp
,
1440 netif_receive_skb(skb
);
1444 /* skip current packet whether it's ok or not. */
1445 rx_page
->read_offset
+=
1446 (((u32
)((prrs
->word1
>> RRS_PKT_SIZE_SHIFT
) &
1447 RRS_PKT_SIZE_MASK
) +
1448 sizeof(struct atl1e_recv_ret_status
) + 31) &
1451 if (rx_page
->read_offset
>= rx_ring
->page_size
) {
1452 /* mark this page clean */
1456 rx_page
->read_offset
=
1457 *(rx_page
->write_offset_addr
) = 0;
1458 rx_using
= rx_page_desc
[que
].rx_using
;
1460 atl1e_rx_page_vld_regs
[que
][rx_using
];
1461 AT_WRITE_REGB(&adapter
->hw
, reg_addr
, 1);
1462 rx_page_desc
[que
].rx_using
^= 1;
1463 rx_page
= atl1e_get_rx_page(adapter
, que
);
1465 write_offset
= *(rx_page
->write_offset_addr
);
1466 } while (rx_page
->read_offset
< write_offset
);
1472 if (!test_bit(__AT_DOWN
, &adapter
->flags
))
1473 schedule_work(&adapter
->reset_task
);
1477 * atl1e_clean - NAPI Rx polling callback
1478 * @adapter: board private structure
1480 static int atl1e_clean(struct napi_struct
*napi
, int budget
)
1482 struct atl1e_adapter
*adapter
=
1483 container_of(napi
, struct atl1e_adapter
, napi
);
1487 /* Keep link state information with original netdev */
1488 if (!netif_carrier_ok(adapter
->netdev
))
1491 atl1e_clean_rx_irq(adapter
, 0, &work_done
, budget
);
1493 /* If no Tx and not enough Rx work done, exit the polling mode */
1494 if (work_done
< budget
) {
1496 napi_complete(napi
);
1497 imr_data
= AT_READ_REG(&adapter
->hw
, REG_IMR
);
1498 AT_WRITE_REG(&adapter
->hw
, REG_IMR
, imr_data
| ISR_RX_EVENT
);
1500 if (test_bit(__AT_DOWN
, &adapter
->flags
)) {
1501 atomic_dec(&adapter
->irq_sem
);
1502 netdev_err(adapter
->netdev
,
1503 "atl1e_clean is called when AT_DOWN\n");
1505 /* reenable RX intr */
1506 /*atl1e_irq_enable(adapter); */
1512 #ifdef CONFIG_NET_POLL_CONTROLLER
1515 * Polling 'interrupt' - used by things like netconsole to send skbs
1516 * without having to re-enable interrupts. It's not called while
1517 * the interrupt routine is executing.
1519 static void atl1e_netpoll(struct net_device
*netdev
)
1521 struct atl1e_adapter
*adapter
= netdev_priv(netdev
);
1523 disable_irq(adapter
->pdev
->irq
);
1524 atl1e_intr(adapter
->pdev
->irq
, netdev
);
1525 enable_irq(adapter
->pdev
->irq
);
1529 static inline u16
atl1e_tpd_avail(struct atl1e_adapter
*adapter
)
1531 struct atl1e_tx_ring
*tx_ring
= &adapter
->tx_ring
;
1532 u16 next_to_use
= 0;
1533 u16 next_to_clean
= 0;
1535 next_to_clean
= atomic_read(&tx_ring
->next_to_clean
);
1536 next_to_use
= tx_ring
->next_to_use
;
1538 return (u16
)(next_to_clean
> next_to_use
) ?
1539 (next_to_clean
- next_to_use
- 1) :
1540 (tx_ring
->count
+ next_to_clean
- next_to_use
- 1);
1544 * get next usable tpd
1545 * Note: should call atl1e_tdp_avail to make sure
1546 * there is enough tpd to use
1548 static struct atl1e_tpd_desc
*atl1e_get_tpd(struct atl1e_adapter
*adapter
)
1550 struct atl1e_tx_ring
*tx_ring
= &adapter
->tx_ring
;
1551 u16 next_to_use
= 0;
1553 next_to_use
= tx_ring
->next_to_use
;
1554 if (++tx_ring
->next_to_use
== tx_ring
->count
)
1555 tx_ring
->next_to_use
= 0;
1557 memset(&tx_ring
->desc
[next_to_use
], 0, sizeof(struct atl1e_tpd_desc
));
1558 return (struct atl1e_tpd_desc
*)&tx_ring
->desc
[next_to_use
];
1561 static struct atl1e_tx_buffer
*
1562 atl1e_get_tx_buffer(struct atl1e_adapter
*adapter
, struct atl1e_tpd_desc
*tpd
)
1564 struct atl1e_tx_ring
*tx_ring
= &adapter
->tx_ring
;
1566 return &tx_ring
->tx_buffer
[tpd
- tx_ring
->desc
];
1569 /* Calculate the transmit packet descript needed*/
1570 static u16
atl1e_cal_tdp_req(const struct sk_buff
*skb
)
1575 u16 proto_hdr_len
= 0;
1577 for (i
= 0; i
< skb_shinfo(skb
)->nr_frags
; i
++) {
1578 fg_size
= skb_shinfo(skb
)->frags
[i
].size
;
1579 tpd_req
+= ((fg_size
+ MAX_TX_BUF_LEN
- 1) >> MAX_TX_BUF_SHIFT
);
1582 if (skb_is_gso(skb
)) {
1583 if (skb
->protocol
== htons(ETH_P_IP
) ||
1584 (skb_shinfo(skb
)->gso_type
== SKB_GSO_TCPV6
)) {
1585 proto_hdr_len
= skb_transport_offset(skb
) +
1587 if (proto_hdr_len
< skb_headlen(skb
)) {
1588 tpd_req
+= ((skb_headlen(skb
) - proto_hdr_len
+
1589 MAX_TX_BUF_LEN
- 1) >>
1598 static int atl1e_tso_csum(struct atl1e_adapter
*adapter
,
1599 struct sk_buff
*skb
, struct atl1e_tpd_desc
*tpd
)
1603 unsigned short offload_type
;
1606 if (skb_is_gso(skb
)) {
1607 if (skb_header_cloned(skb
)) {
1608 err
= pskb_expand_head(skb
, 0, 0, GFP_ATOMIC
);
1612 offload_type
= skb_shinfo(skb
)->gso_type
;
1614 if (offload_type
& SKB_GSO_TCPV4
) {
1615 real_len
= (((unsigned char *)ip_hdr(skb
) - skb
->data
)
1616 + ntohs(ip_hdr(skb
)->tot_len
));
1618 if (real_len
< skb
->len
)
1619 pskb_trim(skb
, real_len
);
1621 hdr_len
= (skb_transport_offset(skb
) + tcp_hdrlen(skb
));
1622 if (unlikely(skb
->len
== hdr_len
)) {
1623 /* only xsum need */
1624 netdev_warn(adapter
->netdev
,
1625 "IPV4 tso with zero data??\n");
1628 ip_hdr(skb
)->check
= 0;
1629 ip_hdr(skb
)->tot_len
= 0;
1630 tcp_hdr(skb
)->check
= ~csum_tcpudp_magic(
1634 tpd
->word3
|= (ip_hdr(skb
)->ihl
&
1635 TDP_V4_IPHL_MASK
) <<
1637 tpd
->word3
|= ((tcp_hdrlen(skb
) >> 2) &
1638 TPD_TCPHDRLEN_MASK
) <<
1639 TPD_TCPHDRLEN_SHIFT
;
1640 tpd
->word3
|= ((skb_shinfo(skb
)->gso_size
) &
1641 TPD_MSS_MASK
) << TPD_MSS_SHIFT
;
1642 tpd
->word3
|= 1 << TPD_SEGMENT_EN_SHIFT
;
1649 if (likely(skb
->ip_summed
== CHECKSUM_PARTIAL
)) {
1652 cso
= skb_checksum_start_offset(skb
);
1653 if (unlikely(cso
& 0x1)) {
1654 netdev_err(adapter
->netdev
,
1655 "payload offset should not ant event number\n");
1658 css
= cso
+ skb
->csum_offset
;
1659 tpd
->word3
|= (cso
& TPD_PLOADOFFSET_MASK
) <<
1660 TPD_PLOADOFFSET_SHIFT
;
1661 tpd
->word3
|= (css
& TPD_CCSUMOFFSET_MASK
) <<
1662 TPD_CCSUMOFFSET_SHIFT
;
1663 tpd
->word3
|= 1 << TPD_CC_SEGMENT_EN_SHIFT
;
1670 static void atl1e_tx_map(struct atl1e_adapter
*adapter
,
1671 struct sk_buff
*skb
, struct atl1e_tpd_desc
*tpd
)
1673 struct atl1e_tpd_desc
*use_tpd
= NULL
;
1674 struct atl1e_tx_buffer
*tx_buffer
= NULL
;
1675 u16 buf_len
= skb_headlen(skb
);
1683 nr_frags
= skb_shinfo(skb
)->nr_frags
;
1684 segment
= (tpd
->word3
>> TPD_SEGMENT_EN_SHIFT
) & TPD_SEGMENT_EN_MASK
;
1687 map_len
= hdr_len
= skb_transport_offset(skb
) + tcp_hdrlen(skb
);
1690 tx_buffer
= atl1e_get_tx_buffer(adapter
, use_tpd
);
1691 tx_buffer
->length
= map_len
;
1692 tx_buffer
->dma
= pci_map_single(adapter
->pdev
,
1693 skb
->data
, hdr_len
, PCI_DMA_TODEVICE
);
1694 ATL1E_SET_PCIMAP_TYPE(tx_buffer
, ATL1E_TX_PCIMAP_SINGLE
);
1695 mapped_len
+= map_len
;
1696 use_tpd
->buffer_addr
= cpu_to_le64(tx_buffer
->dma
);
1697 use_tpd
->word2
= (use_tpd
->word2
& (~TPD_BUFLEN_MASK
)) |
1698 ((cpu_to_le32(tx_buffer
->length
) &
1699 TPD_BUFLEN_MASK
) << TPD_BUFLEN_SHIFT
);
1702 while (mapped_len
< buf_len
) {
1703 /* mapped_len == 0, means we should use the first tpd,
1704 which is given by caller */
1705 if (mapped_len
== 0) {
1708 use_tpd
= atl1e_get_tpd(adapter
);
1709 memcpy(use_tpd
, tpd
, sizeof(struct atl1e_tpd_desc
));
1711 tx_buffer
= atl1e_get_tx_buffer(adapter
, use_tpd
);
1712 tx_buffer
->skb
= NULL
;
1714 tx_buffer
->length
= map_len
=
1715 ((buf_len
- mapped_len
) >= MAX_TX_BUF_LEN
) ?
1716 MAX_TX_BUF_LEN
: (buf_len
- mapped_len
);
1718 pci_map_single(adapter
->pdev
, skb
->data
+ mapped_len
,
1719 map_len
, PCI_DMA_TODEVICE
);
1720 ATL1E_SET_PCIMAP_TYPE(tx_buffer
, ATL1E_TX_PCIMAP_SINGLE
);
1721 mapped_len
+= map_len
;
1722 use_tpd
->buffer_addr
= cpu_to_le64(tx_buffer
->dma
);
1723 use_tpd
->word2
= (use_tpd
->word2
& (~TPD_BUFLEN_MASK
)) |
1724 ((cpu_to_le32(tx_buffer
->length
) &
1725 TPD_BUFLEN_MASK
) << TPD_BUFLEN_SHIFT
);
1728 for (f
= 0; f
< nr_frags
; f
++) {
1729 struct skb_frag_struct
*frag
;
1733 frag
= &skb_shinfo(skb
)->frags
[f
];
1734 buf_len
= frag
->size
;
1736 seg_num
= (buf_len
+ MAX_TX_BUF_LEN
- 1) / MAX_TX_BUF_LEN
;
1737 for (i
= 0; i
< seg_num
; i
++) {
1738 use_tpd
= atl1e_get_tpd(adapter
);
1739 memcpy(use_tpd
, tpd
, sizeof(struct atl1e_tpd_desc
));
1741 tx_buffer
= atl1e_get_tx_buffer(adapter
, use_tpd
);
1742 BUG_ON(tx_buffer
->skb
);
1744 tx_buffer
->skb
= NULL
;
1746 (buf_len
> MAX_TX_BUF_LEN
) ?
1747 MAX_TX_BUF_LEN
: buf_len
;
1748 buf_len
-= tx_buffer
->length
;
1751 pci_map_page(adapter
->pdev
, frag
->page
,
1753 (i
* MAX_TX_BUF_LEN
),
1756 ATL1E_SET_PCIMAP_TYPE(tx_buffer
, ATL1E_TX_PCIMAP_PAGE
);
1757 use_tpd
->buffer_addr
= cpu_to_le64(tx_buffer
->dma
);
1758 use_tpd
->word2
= (use_tpd
->word2
& (~TPD_BUFLEN_MASK
)) |
1759 ((cpu_to_le32(tx_buffer
->length
) &
1760 TPD_BUFLEN_MASK
) << TPD_BUFLEN_SHIFT
);
1764 if ((tpd
->word3
>> TPD_SEGMENT_EN_SHIFT
) & TPD_SEGMENT_EN_MASK
)
1765 /* note this one is a tcp header */
1766 tpd
->word3
|= 1 << TPD_HDRFLAG_SHIFT
;
1769 use_tpd
->word3
|= 1 << TPD_EOP_SHIFT
;
1770 /* The last buffer info contain the skb address,
1771 so it will be free after unmap */
1772 tx_buffer
->skb
= skb
;
1775 static void atl1e_tx_queue(struct atl1e_adapter
*adapter
, u16 count
,
1776 struct atl1e_tpd_desc
*tpd
)
1778 struct atl1e_tx_ring
*tx_ring
= &adapter
->tx_ring
;
1779 /* Force memory writes to complete before letting h/w
1780 * know there are new descriptors to fetch. (Only
1781 * applicable for weak-ordered memory model archs,
1782 * such as IA-64). */
1784 AT_WRITE_REG(&adapter
->hw
, REG_MB_TPD_PROD_IDX
, tx_ring
->next_to_use
);
1787 static netdev_tx_t
atl1e_xmit_frame(struct sk_buff
*skb
,
1788 struct net_device
*netdev
)
1790 struct atl1e_adapter
*adapter
= netdev_priv(netdev
);
1791 unsigned long flags
;
1793 struct atl1e_tpd_desc
*tpd
;
1795 if (test_bit(__AT_DOWN
, &adapter
->flags
)) {
1796 dev_kfree_skb_any(skb
);
1797 return NETDEV_TX_OK
;
1800 if (unlikely(skb
->len
<= 0)) {
1801 dev_kfree_skb_any(skb
);
1802 return NETDEV_TX_OK
;
1804 tpd_req
= atl1e_cal_tdp_req(skb
);
1805 if (!spin_trylock_irqsave(&adapter
->tx_lock
, flags
))
1806 return NETDEV_TX_LOCKED
;
1808 if (atl1e_tpd_avail(adapter
) < tpd_req
) {
1809 /* no enough descriptor, just stop queue */
1810 netif_stop_queue(netdev
);
1811 spin_unlock_irqrestore(&adapter
->tx_lock
, flags
);
1812 return NETDEV_TX_BUSY
;
1815 tpd
= atl1e_get_tpd(adapter
);
1817 if (unlikely(vlan_tx_tag_present(skb
))) {
1818 u16 vlan_tag
= vlan_tx_tag_get(skb
);
1821 tpd
->word3
|= 1 << TPD_INS_VL_TAG_SHIFT
;
1822 AT_VLAN_TAG_TO_TPD_TAG(vlan_tag
, atl1e_vlan_tag
);
1823 tpd
->word2
|= (atl1e_vlan_tag
& TPD_VLANTAG_MASK
) <<
1827 if (skb
->protocol
== htons(ETH_P_8021Q
))
1828 tpd
->word3
|= 1 << TPD_VL_TAGGED_SHIFT
;
1830 if (skb_network_offset(skb
) != ETH_HLEN
)
1831 tpd
->word3
|= 1 << TPD_ETHTYPE_SHIFT
; /* 802.3 frame */
1833 /* do TSO and check sum */
1834 if (atl1e_tso_csum(adapter
, skb
, tpd
) != 0) {
1835 spin_unlock_irqrestore(&adapter
->tx_lock
, flags
);
1836 dev_kfree_skb_any(skb
);
1837 return NETDEV_TX_OK
;
1840 atl1e_tx_map(adapter
, skb
, tpd
);
1841 atl1e_tx_queue(adapter
, tpd_req
, tpd
);
1843 netdev
->trans_start
= jiffies
; /* NETIF_F_LLTX driver :( */
1844 spin_unlock_irqrestore(&adapter
->tx_lock
, flags
);
1845 return NETDEV_TX_OK
;
1848 static void atl1e_free_irq(struct atl1e_adapter
*adapter
)
1850 struct net_device
*netdev
= adapter
->netdev
;
1852 free_irq(adapter
->pdev
->irq
, netdev
);
1854 if (adapter
->have_msi
)
1855 pci_disable_msi(adapter
->pdev
);
1858 static int atl1e_request_irq(struct atl1e_adapter
*adapter
)
1860 struct pci_dev
*pdev
= adapter
->pdev
;
1861 struct net_device
*netdev
= adapter
->netdev
;
1865 adapter
->have_msi
= true;
1866 err
= pci_enable_msi(adapter
->pdev
);
1868 netdev_dbg(adapter
->netdev
,
1869 "Unable to allocate MSI interrupt Error: %d\n", err
);
1870 adapter
->have_msi
= false;
1872 netdev
->irq
= pdev
->irq
;
1875 if (!adapter
->have_msi
)
1876 flags
|= IRQF_SHARED
;
1877 err
= request_irq(adapter
->pdev
->irq
, atl1e_intr
, flags
,
1878 netdev
->name
, netdev
);
1880 netdev_dbg(adapter
->netdev
,
1881 "Unable to allocate interrupt Error: %d\n", err
);
1882 if (adapter
->have_msi
)
1883 pci_disable_msi(adapter
->pdev
);
1886 netdev_dbg(adapter
->netdev
, "atl1e_request_irq OK\n");
1890 int atl1e_up(struct atl1e_adapter
*adapter
)
1892 struct net_device
*netdev
= adapter
->netdev
;
1896 /* hardware has been reset, we need to reload some things */
1897 err
= atl1e_init_hw(&adapter
->hw
);
1902 atl1e_init_ring_ptrs(adapter
);
1903 atl1e_set_multi(netdev
);
1904 atl1e_restore_vlan(adapter
);
1906 if (atl1e_configure(adapter
)) {
1911 clear_bit(__AT_DOWN
, &adapter
->flags
);
1912 napi_enable(&adapter
->napi
);
1913 atl1e_irq_enable(adapter
);
1914 val
= AT_READ_REG(&adapter
->hw
, REG_MASTER_CTRL
);
1915 AT_WRITE_REG(&adapter
->hw
, REG_MASTER_CTRL
,
1916 val
| MASTER_CTRL_MANUAL_INT
);
1922 void atl1e_down(struct atl1e_adapter
*adapter
)
1924 struct net_device
*netdev
= adapter
->netdev
;
1926 /* signal that we're down so the interrupt handler does not
1927 * reschedule our watchdog timer */
1928 set_bit(__AT_DOWN
, &adapter
->flags
);
1931 netif_stop_queue(netdev
);
1933 netif_tx_disable(netdev
);
1936 /* reset MAC to disable all RX/TX */
1937 atl1e_reset_hw(&adapter
->hw
);
1940 napi_disable(&adapter
->napi
);
1941 atl1e_del_timer(adapter
);
1942 atl1e_irq_disable(adapter
);
1944 netif_carrier_off(netdev
);
1945 adapter
->link_speed
= SPEED_0
;
1946 adapter
->link_duplex
= -1;
1947 atl1e_clean_tx_ring(adapter
);
1948 atl1e_clean_rx_ring(adapter
);
1952 * atl1e_open - Called when a network interface is made active
1953 * @netdev: network interface device structure
1955 * Returns 0 on success, negative value on failure
1957 * The open entry point is called when a network interface is made
1958 * active by the system (IFF_UP). At this point all resources needed
1959 * for transmit and receive operations are allocated, the interrupt
1960 * handler is registered with the OS, the watchdog timer is started,
1961 * and the stack is notified that the interface is ready.
1963 static int atl1e_open(struct net_device
*netdev
)
1965 struct atl1e_adapter
*adapter
= netdev_priv(netdev
);
1968 /* disallow open during test */
1969 if (test_bit(__AT_TESTING
, &adapter
->flags
))
1972 /* allocate rx/tx dma buffer & descriptors */
1973 atl1e_init_ring_resources(adapter
);
1974 err
= atl1e_setup_ring_resources(adapter
);
1978 err
= atl1e_request_irq(adapter
);
1982 err
= atl1e_up(adapter
);
1989 atl1e_free_irq(adapter
);
1991 atl1e_free_ring_resources(adapter
);
1992 atl1e_reset_hw(&adapter
->hw
);
1998 * atl1e_close - Disables a network interface
1999 * @netdev: network interface device structure
2001 * Returns 0, this is not allowed to fail
2003 * The close entry point is called when an interface is de-activated
2004 * by the OS. The hardware is still under the drivers control, but
2005 * needs to be disabled. A global MAC reset is issued to stop the
2006 * hardware, and all transmit and receive resources are freed.
2008 static int atl1e_close(struct net_device
*netdev
)
2010 struct atl1e_adapter
*adapter
= netdev_priv(netdev
);
2012 WARN_ON(test_bit(__AT_RESETTING
, &adapter
->flags
));
2013 atl1e_down(adapter
);
2014 atl1e_free_irq(adapter
);
2015 atl1e_free_ring_resources(adapter
);
2020 static int atl1e_suspend(struct pci_dev
*pdev
, pm_message_t state
)
2022 struct net_device
*netdev
= pci_get_drvdata(pdev
);
2023 struct atl1e_adapter
*adapter
= netdev_priv(netdev
);
2024 struct atl1e_hw
*hw
= &adapter
->hw
;
2026 u32 mac_ctrl_data
= 0;
2027 u32 wol_ctrl_data
= 0;
2028 u16 mii_advertise_data
= 0;
2029 u16 mii_bmsr_data
= 0;
2030 u16 mii_intr_status_data
= 0;
2031 u32 wufc
= adapter
->wol
;
2037 if (netif_running(netdev
)) {
2038 WARN_ON(test_bit(__AT_RESETTING
, &adapter
->flags
));
2039 atl1e_down(adapter
);
2041 netif_device_detach(netdev
);
2044 retval
= pci_save_state(pdev
);
2050 /* get link status */
2051 atl1e_read_phy_reg(hw
, MII_BMSR
, (u16
*)&mii_bmsr_data
);
2052 atl1e_read_phy_reg(hw
, MII_BMSR
, (u16
*)&mii_bmsr_data
);
2054 mii_advertise_data
= MII_AR_10T_HD_CAPS
;
2056 if ((atl1e_write_phy_reg(hw
, MII_AT001_CR
, 0) != 0) ||
2057 (atl1e_write_phy_reg(hw
,
2058 MII_ADVERTISE
, mii_advertise_data
) != 0) ||
2059 (atl1e_phy_commit(hw
)) != 0) {
2060 netdev_dbg(adapter
->netdev
, "set phy register failed\n");
2064 hw
->phy_configured
= false; /* re-init PHY when resume */
2066 /* turn on magic packet wol */
2067 if (wufc
& AT_WUFC_MAG
)
2068 wol_ctrl_data
|= WOL_MAGIC_EN
| WOL_MAGIC_PME_EN
;
2070 if (wufc
& AT_WUFC_LNKC
) {
2071 /* if orignal link status is link, just wait for retrive link */
2072 if (mii_bmsr_data
& BMSR_LSTATUS
) {
2073 for (i
= 0; i
< AT_SUSPEND_LINK_TIMEOUT
; i
++) {
2075 atl1e_read_phy_reg(hw
, MII_BMSR
,
2076 (u16
*)&mii_bmsr_data
);
2077 if (mii_bmsr_data
& BMSR_LSTATUS
)
2081 if ((mii_bmsr_data
& BMSR_LSTATUS
) == 0)
2082 netdev_dbg(adapter
->netdev
,
2083 "Link may change when suspend\n");
2085 wol_ctrl_data
|= WOL_LINK_CHG_EN
| WOL_LINK_CHG_PME_EN
;
2086 /* only link up can wake up */
2087 if (atl1e_write_phy_reg(hw
, MII_INT_CTRL
, 0x400) != 0) {
2088 netdev_dbg(adapter
->netdev
,
2089 "read write phy register failed\n");
2093 /* clear phy interrupt */
2094 atl1e_read_phy_reg(hw
, MII_INT_STATUS
, &mii_intr_status_data
);
2095 /* Config MAC Ctrl register */
2096 mac_ctrl_data
= MAC_CTRL_RX_EN
;
2097 /* set to 10/100M halt duplex */
2098 mac_ctrl_data
|= MAC_CTRL_SPEED_10_100
<< MAC_CTRL_SPEED_SHIFT
;
2099 mac_ctrl_data
|= (((u32
)adapter
->hw
.preamble_len
&
2100 MAC_CTRL_PRMLEN_MASK
) <<
2101 MAC_CTRL_PRMLEN_SHIFT
);
2104 mac_ctrl_data
|= MAC_CTRL_RMV_VLAN
;
2106 /* magic packet maybe Broadcast&multicast&Unicast frame */
2107 if (wufc
& AT_WUFC_MAG
)
2108 mac_ctrl_data
|= MAC_CTRL_BC_EN
;
2110 netdev_dbg(adapter
->netdev
, "suspend MAC=0x%x\n",
2113 AT_WRITE_REG(hw
, REG_WOL_CTRL
, wol_ctrl_data
);
2114 AT_WRITE_REG(hw
, REG_MAC_CTRL
, mac_ctrl_data
);
2116 ctrl
= AT_READ_REG(hw
, REG_PCIE_PHYMISC
);
2117 ctrl
|= PCIE_PHYMISC_FORCE_RCV_DET
;
2118 AT_WRITE_REG(hw
, REG_PCIE_PHYMISC
, ctrl
);
2119 pci_enable_wake(pdev
, pci_choose_state(pdev
, state
), 1);
2125 AT_WRITE_REG(hw
, REG_WOL_CTRL
, 0);
2128 ctrl
= AT_READ_REG(hw
, REG_PCIE_PHYMISC
);
2129 ctrl
|= PCIE_PHYMISC_FORCE_RCV_DET
;
2130 AT_WRITE_REG(hw
, REG_PCIE_PHYMISC
, ctrl
);
2133 hw
->phy_configured
= false; /* re-init PHY when resume */
2135 pci_enable_wake(pdev
, pci_choose_state(pdev
, state
), 0);
2139 if (netif_running(netdev
))
2140 atl1e_free_irq(adapter
);
2142 pci_disable_device(pdev
);
2144 pci_set_power_state(pdev
, pci_choose_state(pdev
, state
));
2150 static int atl1e_resume(struct pci_dev
*pdev
)
2152 struct net_device
*netdev
= pci_get_drvdata(pdev
);
2153 struct atl1e_adapter
*adapter
= netdev_priv(netdev
);
2156 pci_set_power_state(pdev
, PCI_D0
);
2157 pci_restore_state(pdev
);
2159 err
= pci_enable_device(pdev
);
2161 netdev_err(adapter
->netdev
,
2162 "Cannot enable PCI device from suspend\n");
2166 pci_set_master(pdev
);
2168 AT_READ_REG(&adapter
->hw
, REG_WOL_CTRL
); /* clear WOL status */
2170 pci_enable_wake(pdev
, PCI_D3hot
, 0);
2171 pci_enable_wake(pdev
, PCI_D3cold
, 0);
2173 AT_WRITE_REG(&adapter
->hw
, REG_WOL_CTRL
, 0);
2175 if (netif_running(netdev
)) {
2176 err
= atl1e_request_irq(adapter
);
2181 atl1e_reset_hw(&adapter
->hw
);
2183 if (netif_running(netdev
))
2186 netif_device_attach(netdev
);
2192 static void atl1e_shutdown(struct pci_dev
*pdev
)
2194 atl1e_suspend(pdev
, PMSG_SUSPEND
);
2197 static const struct net_device_ops atl1e_netdev_ops
= {
2198 .ndo_open
= atl1e_open
,
2199 .ndo_stop
= atl1e_close
,
2200 .ndo_start_xmit
= atl1e_xmit_frame
,
2201 .ndo_get_stats
= atl1e_get_stats
,
2202 .ndo_set_multicast_list
= atl1e_set_multi
,
2203 .ndo_validate_addr
= eth_validate_addr
,
2204 .ndo_set_mac_address
= atl1e_set_mac_addr
,
2205 .ndo_change_mtu
= atl1e_change_mtu
,
2206 .ndo_do_ioctl
= atl1e_ioctl
,
2207 .ndo_tx_timeout
= atl1e_tx_timeout
,
2208 .ndo_vlan_rx_register
= atl1e_vlan_rx_register
,
2209 #ifdef CONFIG_NET_POLL_CONTROLLER
2210 .ndo_poll_controller
= atl1e_netpoll
,
2215 static int atl1e_init_netdev(struct net_device
*netdev
, struct pci_dev
*pdev
)
2217 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
2218 pci_set_drvdata(pdev
, netdev
);
2220 netdev
->irq
= pdev
->irq
;
2221 netdev
->netdev_ops
= &atl1e_netdev_ops
;
2223 netdev
->watchdog_timeo
= AT_TX_WATCHDOG
;
2224 atl1e_set_ethtool_ops(netdev
);
2226 netdev
->features
= NETIF_F_SG
| NETIF_F_HW_CSUM
|
2227 NETIF_F_HW_VLAN_TX
| NETIF_F_HW_VLAN_RX
;
2228 netdev
->features
|= NETIF_F_LLTX
;
2229 netdev
->features
|= NETIF_F_TSO
;
2235 * atl1e_probe - Device Initialization Routine
2236 * @pdev: PCI device information struct
2237 * @ent: entry in atl1e_pci_tbl
2239 * Returns 0 on success, negative on failure
2241 * atl1e_probe initializes an adapter identified by a pci_dev structure.
2242 * The OS initialization, configuring of the adapter private structure,
2243 * and a hardware reset occur.
2245 static int __devinit
atl1e_probe(struct pci_dev
*pdev
,
2246 const struct pci_device_id
*ent
)
2248 struct net_device
*netdev
;
2249 struct atl1e_adapter
*adapter
= NULL
;
2250 static int cards_found
;
2254 err
= pci_enable_device(pdev
);
2256 dev_err(&pdev
->dev
, "cannot enable PCI device\n");
2261 * The atl1e chip can DMA to 64-bit addresses, but it uses a single
2262 * shared register for the high 32 bits, so only a single, aligned,
2263 * 4 GB physical address range can be used at a time.
2265 * Supporting 64-bit DMA on this hardware is more trouble than it's
2266 * worth. It is far easier to limit to 32-bit DMA than update
2267 * various kernel subsystems to support the mechanics required by a
2268 * fixed-high-32-bit system.
2270 if ((pci_set_dma_mask(pdev
, DMA_BIT_MASK(32)) != 0) ||
2271 (pci_set_consistent_dma_mask(pdev
, DMA_BIT_MASK(32)) != 0)) {
2272 dev_err(&pdev
->dev
, "No usable DMA configuration,aborting\n");
2276 err
= pci_request_regions(pdev
, atl1e_driver_name
);
2278 dev_err(&pdev
->dev
, "cannot obtain PCI resources\n");
2282 pci_set_master(pdev
);
2284 netdev
= alloc_etherdev(sizeof(struct atl1e_adapter
));
2285 if (netdev
== NULL
) {
2287 dev_err(&pdev
->dev
, "etherdev alloc failed\n");
2288 goto err_alloc_etherdev
;
2291 err
= atl1e_init_netdev(netdev
, pdev
);
2293 netdev_err(netdev
, "init netdevice failed\n");
2294 goto err_init_netdev
;
2296 adapter
= netdev_priv(netdev
);
2297 adapter
->bd_number
= cards_found
;
2298 adapter
->netdev
= netdev
;
2299 adapter
->pdev
= pdev
;
2300 adapter
->hw
.adapter
= adapter
;
2301 adapter
->hw
.hw_addr
= pci_iomap(pdev
, BAR_0
, 0);
2302 if (!adapter
->hw
.hw_addr
) {
2304 netdev_err(netdev
, "cannot map device registers\n");
2307 netdev
->base_addr
= (unsigned long)adapter
->hw
.hw_addr
;
2310 adapter
->mii
.dev
= netdev
;
2311 adapter
->mii
.mdio_read
= atl1e_mdio_read
;
2312 adapter
->mii
.mdio_write
= atl1e_mdio_write
;
2313 adapter
->mii
.phy_id_mask
= 0x1f;
2314 adapter
->mii
.reg_num_mask
= MDIO_REG_ADDR_MASK
;
2316 netif_napi_add(netdev
, &adapter
->napi
, atl1e_clean
, 64);
2318 init_timer(&adapter
->phy_config_timer
);
2319 adapter
->phy_config_timer
.function
= atl1e_phy_config
;
2320 adapter
->phy_config_timer
.data
= (unsigned long) adapter
;
2322 /* get user settings */
2323 atl1e_check_options(adapter
);
2325 * Mark all PCI regions associated with PCI device
2326 * pdev as being reserved by owner atl1e_driver_name
2327 * Enables bus-mastering on the device and calls
2328 * pcibios_set_master to do the needed arch specific settings
2330 atl1e_setup_pcicmd(pdev
);
2331 /* setup the private structure */
2332 err
= atl1e_sw_init(adapter
);
2334 netdev_err(netdev
, "net device private data init failed\n");
2338 /* Init GPHY as early as possible due to power saving issue */
2339 atl1e_phy_init(&adapter
->hw
);
2340 /* reset the controller to
2341 * put the device in a known good starting state */
2342 err
= atl1e_reset_hw(&adapter
->hw
);
2348 if (atl1e_read_mac_addr(&adapter
->hw
) != 0) {
2350 netdev_err(netdev
, "get mac address failed\n");
2354 memcpy(netdev
->dev_addr
, adapter
->hw
.mac_addr
, netdev
->addr_len
);
2355 memcpy(netdev
->perm_addr
, adapter
->hw
.mac_addr
, netdev
->addr_len
);
2356 netdev_dbg(netdev
, "mac address : %pM\n", adapter
->hw
.mac_addr
);
2358 INIT_WORK(&adapter
->reset_task
, atl1e_reset_task
);
2359 INIT_WORK(&adapter
->link_chg_task
, atl1e_link_chg_task
);
2360 err
= register_netdev(netdev
);
2362 netdev_err(netdev
, "register netdevice failed\n");
2366 /* assume we have no link for now */
2367 netif_stop_queue(netdev
);
2368 netif_carrier_off(netdev
);
2378 iounmap(adapter
->hw
.hw_addr
);
2381 free_netdev(netdev
);
2383 pci_release_regions(pdev
);
2386 pci_disable_device(pdev
);
2391 * atl1e_remove - Device Removal Routine
2392 * @pdev: PCI device information struct
2394 * atl1e_remove is called by the PCI subsystem to alert the driver
2395 * that it should release a PCI device. The could be caused by a
2396 * Hot-Plug event, or because the driver is going to be removed from
2399 static void __devexit
atl1e_remove(struct pci_dev
*pdev
)
2401 struct net_device
*netdev
= pci_get_drvdata(pdev
);
2402 struct atl1e_adapter
*adapter
= netdev_priv(netdev
);
2405 * flush_scheduled work may reschedule our watchdog task, so
2406 * explicitly disable watchdog tasks from being rescheduled
2408 set_bit(__AT_DOWN
, &adapter
->flags
);
2410 atl1e_del_timer(adapter
);
2411 atl1e_cancel_work(adapter
);
2413 unregister_netdev(netdev
);
2414 atl1e_free_ring_resources(adapter
);
2415 atl1e_force_ps(&adapter
->hw
);
2416 iounmap(adapter
->hw
.hw_addr
);
2417 pci_release_regions(pdev
);
2418 free_netdev(netdev
);
2419 pci_disable_device(pdev
);
2423 * atl1e_io_error_detected - called when PCI error is detected
2424 * @pdev: Pointer to PCI device
2425 * @state: The current pci connection state
2427 * This function is called after a PCI bus error affecting
2428 * this device has been detected.
2430 static pci_ers_result_t
2431 atl1e_io_error_detected(struct pci_dev
*pdev
, pci_channel_state_t state
)
2433 struct net_device
*netdev
= pci_get_drvdata(pdev
);
2434 struct atl1e_adapter
*adapter
= netdev_priv(netdev
);
2436 netif_device_detach(netdev
);
2438 if (state
== pci_channel_io_perm_failure
)
2439 return PCI_ERS_RESULT_DISCONNECT
;
2441 if (netif_running(netdev
))
2442 atl1e_down(adapter
);
2444 pci_disable_device(pdev
);
2446 /* Request a slot slot reset. */
2447 return PCI_ERS_RESULT_NEED_RESET
;
2451 * atl1e_io_slot_reset - called after the pci bus has been reset.
2452 * @pdev: Pointer to PCI device
2454 * Restart the card from scratch, as if from a cold-boot. Implementation
2455 * resembles the first-half of the e1000_resume routine.
2457 static pci_ers_result_t
atl1e_io_slot_reset(struct pci_dev
*pdev
)
2459 struct net_device
*netdev
= pci_get_drvdata(pdev
);
2460 struct atl1e_adapter
*adapter
= netdev_priv(netdev
);
2462 if (pci_enable_device(pdev
)) {
2463 netdev_err(adapter
->netdev
,
2464 "Cannot re-enable PCI device after reset\n");
2465 return PCI_ERS_RESULT_DISCONNECT
;
2467 pci_set_master(pdev
);
2469 pci_enable_wake(pdev
, PCI_D3hot
, 0);
2470 pci_enable_wake(pdev
, PCI_D3cold
, 0);
2472 atl1e_reset_hw(&adapter
->hw
);
2474 return PCI_ERS_RESULT_RECOVERED
;
2478 * atl1e_io_resume - called when traffic can start flowing again.
2479 * @pdev: Pointer to PCI device
2481 * This callback is called when the error recovery driver tells us that
2482 * its OK to resume normal operation. Implementation resembles the
2483 * second-half of the atl1e_resume routine.
2485 static void atl1e_io_resume(struct pci_dev
*pdev
)
2487 struct net_device
*netdev
= pci_get_drvdata(pdev
);
2488 struct atl1e_adapter
*adapter
= netdev_priv(netdev
);
2490 if (netif_running(netdev
)) {
2491 if (atl1e_up(adapter
)) {
2492 netdev_err(adapter
->netdev
,
2493 "can't bring device back up after reset\n");
2498 netif_device_attach(netdev
);
2501 static struct pci_error_handlers atl1e_err_handler
= {
2502 .error_detected
= atl1e_io_error_detected
,
2503 .slot_reset
= atl1e_io_slot_reset
,
2504 .resume
= atl1e_io_resume
,
2507 static struct pci_driver atl1e_driver
= {
2508 .name
= atl1e_driver_name
,
2509 .id_table
= atl1e_pci_tbl
,
2510 .probe
= atl1e_probe
,
2511 .remove
= __devexit_p(atl1e_remove
),
2512 /* Power Managment Hooks */
2514 .suspend
= atl1e_suspend
,
2515 .resume
= atl1e_resume
,
2517 .shutdown
= atl1e_shutdown
,
2518 .err_handler
= &atl1e_err_handler
2522 * atl1e_init_module - Driver Registration Routine
2524 * atl1e_init_module is the first routine called when the driver is
2525 * loaded. All it does is register with the PCI subsystem.
2527 static int __init
atl1e_init_module(void)
2529 return pci_register_driver(&atl1e_driver
);
2533 * atl1e_exit_module - Driver Exit Cleanup Routine
2535 * atl1e_exit_module is called just before the driver is removed
2538 static void __exit
atl1e_exit_module(void)
2540 pci_unregister_driver(&atl1e_driver
);
2543 module_init(atl1e_init_module
);
2544 module_exit(atl1e_exit_module
);