2 * Copyright(c) 2008 - 2009 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 ATL1C_DRV_VERSION "1.0.1.0-NAPI"
25 char atl1c_driver_name
[] = "atl1c";
26 char atl1c_driver_version
[] = ATL1C_DRV_VERSION
;
27 #define PCI_DEVICE_ID_ATTANSIC_L2C 0x1062
28 #define PCI_DEVICE_ID_ATTANSIC_L1C 0x1063
29 #define PCI_DEVICE_ID_ATHEROS_L2C_B 0x2060 /* AR8152 v1.1 Fast 10/100 */
30 #define PCI_DEVICE_ID_ATHEROS_L2C_B2 0x2062 /* AR8152 v2.0 Fast 10/100 */
31 #define PCI_DEVICE_ID_ATHEROS_L1D 0x1073 /* AR8151 v1.0 Gigabit 1000 */
32 #define PCI_DEVICE_ID_ATHEROS_L1D_2_0 0x1083 /* AR8151 v2.0 Gigabit 1000 */
37 * atl1c_pci_tbl - PCI Device ID Table
39 * Wildcard entries (PCI_ANY_ID) should come last
40 * Last entry must be all 0s
42 * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
43 * Class, Class Mask, private data (not used) }
45 static DEFINE_PCI_DEVICE_TABLE(atl1c_pci_tbl
) = {
46 {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC
, PCI_DEVICE_ID_ATTANSIC_L1C
)},
47 {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC
, PCI_DEVICE_ID_ATTANSIC_L2C
)},
48 {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC
, PCI_DEVICE_ID_ATHEROS_L2C_B
)},
49 {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC
, PCI_DEVICE_ID_ATHEROS_L2C_B2
)},
50 {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC
, PCI_DEVICE_ID_ATHEROS_L1D
)},
51 {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC
, PCI_DEVICE_ID_ATHEROS_L1D_2_0
)},
52 /* required last entry */
55 MODULE_DEVICE_TABLE(pci
, atl1c_pci_tbl
);
57 MODULE_AUTHOR("Jie Yang <jie.yang@atheros.com>");
58 MODULE_DESCRIPTION("Atheros 1000M Ethernet Network Driver");
59 MODULE_LICENSE("GPL");
60 MODULE_VERSION(ATL1C_DRV_VERSION
);
62 static int atl1c_stop_mac(struct atl1c_hw
*hw
);
63 static void atl1c_enable_rx_ctrl(struct atl1c_hw
*hw
);
64 static void atl1c_enable_tx_ctrl(struct atl1c_hw
*hw
);
65 static void atl1c_disable_l0s_l1(struct atl1c_hw
*hw
);
66 static void atl1c_set_aspm(struct atl1c_hw
*hw
, bool linkup
);
67 static void atl1c_setup_mac_ctrl(struct atl1c_adapter
*adapter
);
68 static void atl1c_clean_rx_irq(struct atl1c_adapter
*adapter
, u8 que
,
69 int *work_done
, int work_to_do
);
70 static int atl1c_up(struct atl1c_adapter
*adapter
);
71 static void atl1c_down(struct atl1c_adapter
*adapter
);
73 static const u16 atl1c_pay_load_size
[] = {
74 128, 256, 512, 1024, 2048, 4096,
77 static const u16 atl1c_rfd_prod_idx_regs
[AT_MAX_RECEIVE_QUEUE
] =
85 static const u16 atl1c_rfd_addr_lo_regs
[AT_MAX_RECEIVE_QUEUE
] =
87 REG_RFD0_HEAD_ADDR_LO
,
88 REG_RFD1_HEAD_ADDR_LO
,
89 REG_RFD2_HEAD_ADDR_LO
,
93 static const u16 atl1c_rrd_addr_lo_regs
[AT_MAX_RECEIVE_QUEUE
] =
95 REG_RRD0_HEAD_ADDR_LO
,
96 REG_RRD1_HEAD_ADDR_LO
,
97 REG_RRD2_HEAD_ADDR_LO
,
101 static const u32 atl1c_default_msg
= NETIF_MSG_DRV
| NETIF_MSG_PROBE
|
102 NETIF_MSG_LINK
| NETIF_MSG_TIMER
| NETIF_MSG_IFDOWN
| NETIF_MSG_IFUP
;
103 static void atl1c_pcie_patch(struct atl1c_hw
*hw
)
107 AT_READ_REG(hw
, REG_PCIE_PHYMISC
, &data
);
108 data
|= PCIE_PHYMISC_FORCE_RCV_DET
;
109 AT_WRITE_REG(hw
, REG_PCIE_PHYMISC
, data
);
111 if (hw
->nic_type
== athr_l2c_b
&& hw
->revision_id
== L2CB_V10
) {
112 AT_READ_REG(hw
, REG_PCIE_PHYMISC2
, &data
);
114 data
&= ~(PCIE_PHYMISC2_SERDES_CDR_MASK
<<
115 PCIE_PHYMISC2_SERDES_CDR_SHIFT
);
116 data
|= 3 << PCIE_PHYMISC2_SERDES_CDR_SHIFT
;
117 data
&= ~(PCIE_PHYMISC2_SERDES_TH_MASK
<<
118 PCIE_PHYMISC2_SERDES_TH_SHIFT
);
119 data
|= 3 << PCIE_PHYMISC2_SERDES_TH_SHIFT
;
120 AT_WRITE_REG(hw
, REG_PCIE_PHYMISC2
, data
);
124 /* FIXME: no need any more ? */
126 * atl1c_init_pcie - init PCIE module
128 static void atl1c_reset_pcie(struct atl1c_hw
*hw
, u32 flag
)
132 struct pci_dev
*pdev
= hw
->adapter
->pdev
;
134 AT_READ_REG(hw
, PCI_COMMAND
, &pci_cmd
);
135 pci_cmd
&= ~PCI_COMMAND_INTX_DISABLE
;
136 pci_cmd
|= (PCI_COMMAND_MEMORY
| PCI_COMMAND_MASTER
|
138 AT_WRITE_REG(hw
, PCI_COMMAND
, pci_cmd
);
141 * Clear any PowerSaveing Settings
143 pci_enable_wake(pdev
, PCI_D3hot
, 0);
144 pci_enable_wake(pdev
, PCI_D3cold
, 0);
147 * Mask some pcie error bits
149 AT_READ_REG(hw
, REG_PCIE_UC_SEVERITY
, &data
);
150 data
&= ~PCIE_UC_SERVRITY_DLP
;
151 data
&= ~PCIE_UC_SERVRITY_FCP
;
152 AT_WRITE_REG(hw
, REG_PCIE_UC_SEVERITY
, data
);
154 AT_READ_REG(hw
, REG_LTSSM_ID_CTRL
, &data
);
155 data
&= ~LTSSM_ID_EN_WRO
;
156 AT_WRITE_REG(hw
, REG_LTSSM_ID_CTRL
, data
);
158 atl1c_pcie_patch(hw
);
159 if (flag
& ATL1C_PCIE_L0S_L1_DISABLE
)
160 atl1c_disable_l0s_l1(hw
);
161 if (flag
& ATL1C_PCIE_PHY_RESET
)
162 AT_WRITE_REG(hw
, REG_GPHY_CTRL
, GPHY_CTRL_DEFAULT
);
164 AT_WRITE_REG(hw
, REG_GPHY_CTRL
,
165 GPHY_CTRL_DEFAULT
| GPHY_CTRL_EXT_RESET
);
171 * atl1c_irq_enable - Enable default interrupt generation settings
172 * @adapter: board private structure
174 static inline void atl1c_irq_enable(struct atl1c_adapter
*adapter
)
176 if (likely(atomic_dec_and_test(&adapter
->irq_sem
))) {
177 AT_WRITE_REG(&adapter
->hw
, REG_ISR
, 0x7FFFFFFF);
178 AT_WRITE_REG(&adapter
->hw
, REG_IMR
, adapter
->hw
.intr_mask
);
179 AT_WRITE_FLUSH(&adapter
->hw
);
184 * atl1c_irq_disable - Mask off interrupt generation on the NIC
185 * @adapter: board private structure
187 static inline void atl1c_irq_disable(struct atl1c_adapter
*adapter
)
189 atomic_inc(&adapter
->irq_sem
);
190 AT_WRITE_REG(&adapter
->hw
, REG_IMR
, 0);
191 AT_WRITE_REG(&adapter
->hw
, REG_ISR
, ISR_DIS_INT
);
192 AT_WRITE_FLUSH(&adapter
->hw
);
193 synchronize_irq(adapter
->pdev
->irq
);
197 * atl1c_irq_reset - reset interrupt confiure on the NIC
198 * @adapter: board private structure
200 static inline void atl1c_irq_reset(struct atl1c_adapter
*adapter
)
202 atomic_set(&adapter
->irq_sem
, 1);
203 atl1c_irq_enable(adapter
);
207 * atl1c_wait_until_idle - wait up to AT_HW_MAX_IDLE_DELAY reads
208 * of the idle status register until the device is actually idle
210 static u32
atl1c_wait_until_idle(struct atl1c_hw
*hw
)
215 for (timeout
= 0; timeout
< AT_HW_MAX_IDLE_DELAY
; timeout
++) {
216 AT_READ_REG(hw
, REG_IDLE_STATUS
, &data
);
217 if ((data
& IDLE_STATUS_MASK
) == 0)
225 * atl1c_phy_config - Timer Call-back
226 * @data: pointer to netdev cast into an unsigned long
228 static void atl1c_phy_config(unsigned long data
)
230 struct atl1c_adapter
*adapter
= (struct atl1c_adapter
*) data
;
231 struct atl1c_hw
*hw
= &adapter
->hw
;
234 spin_lock_irqsave(&adapter
->mdio_lock
, flags
);
235 atl1c_restart_autoneg(hw
);
236 spin_unlock_irqrestore(&adapter
->mdio_lock
, flags
);
239 void atl1c_reinit_locked(struct atl1c_adapter
*adapter
)
241 WARN_ON(in_interrupt());
244 clear_bit(__AT_RESETTING
, &adapter
->flags
);
247 static void atl1c_check_link_status(struct atl1c_adapter
*adapter
)
249 struct atl1c_hw
*hw
= &adapter
->hw
;
250 struct net_device
*netdev
= adapter
->netdev
;
251 struct pci_dev
*pdev
= adapter
->pdev
;
254 u16 speed
, duplex
, phy_data
;
256 spin_lock_irqsave(&adapter
->mdio_lock
, flags
);
257 /* MII_BMSR must read twise */
258 atl1c_read_phy_reg(hw
, MII_BMSR
, &phy_data
);
259 atl1c_read_phy_reg(hw
, MII_BMSR
, &phy_data
);
260 spin_unlock_irqrestore(&adapter
->mdio_lock
, flags
);
262 if ((phy_data
& BMSR_LSTATUS
) == 0) {
264 hw
->hibernate
= true;
265 if (atl1c_stop_mac(hw
) != 0)
266 if (netif_msg_hw(adapter
))
267 dev_warn(&pdev
->dev
, "stop mac failed\n");
268 atl1c_set_aspm(hw
, false);
269 netif_carrier_off(netdev
);
270 netif_stop_queue(netdev
);
272 atl1c_phy_init(&adapter
->hw
);
275 hw
->hibernate
= false;
276 spin_lock_irqsave(&adapter
->mdio_lock
, flags
);
277 err
= atl1c_get_speed_and_duplex(hw
, &speed
, &duplex
);
278 spin_unlock_irqrestore(&adapter
->mdio_lock
, flags
);
281 /* link result is our setting */
282 if (adapter
->link_speed
!= speed
||
283 adapter
->link_duplex
!= duplex
) {
284 adapter
->link_speed
= speed
;
285 adapter
->link_duplex
= duplex
;
286 atl1c_set_aspm(hw
, true);
287 atl1c_enable_tx_ctrl(hw
);
288 atl1c_enable_rx_ctrl(hw
);
289 atl1c_setup_mac_ctrl(adapter
);
290 if (netif_msg_link(adapter
))
292 "%s: %s NIC Link is Up<%d Mbps %s>\n",
293 atl1c_driver_name
, netdev
->name
,
295 adapter
->link_duplex
== FULL_DUPLEX
?
296 "Full Duplex" : "Half Duplex");
298 if (!netif_carrier_ok(netdev
))
299 netif_carrier_on(netdev
);
303 static void atl1c_link_chg_event(struct atl1c_adapter
*adapter
)
305 struct net_device
*netdev
= adapter
->netdev
;
306 struct pci_dev
*pdev
= adapter
->pdev
;
310 spin_lock(&adapter
->mdio_lock
);
311 atl1c_read_phy_reg(&adapter
->hw
, MII_BMSR
, &phy_data
);
312 atl1c_read_phy_reg(&adapter
->hw
, MII_BMSR
, &phy_data
);
313 spin_unlock(&adapter
->mdio_lock
);
314 link_up
= phy_data
& BMSR_LSTATUS
;
315 /* notify upper layer link down ASAP */
317 if (netif_carrier_ok(netdev
)) {
318 /* old link state: Up */
319 netif_carrier_off(netdev
);
320 if (netif_msg_link(adapter
))
322 "%s: %s NIC Link is Down\n",
323 atl1c_driver_name
, netdev
->name
);
324 adapter
->link_speed
= SPEED_0
;
328 set_bit(ATL1C_WORK_EVENT_LINK_CHANGE
, &adapter
->work_event
);
329 schedule_work(&adapter
->common_task
);
332 static void atl1c_common_task(struct work_struct
*work
)
334 struct atl1c_adapter
*adapter
;
335 struct net_device
*netdev
;
337 adapter
= container_of(work
, struct atl1c_adapter
, common_task
);
338 netdev
= adapter
->netdev
;
340 if (test_and_clear_bit(ATL1C_WORK_EVENT_RESET
, &adapter
->work_event
)) {
341 netif_device_detach(netdev
);
344 netif_device_attach(netdev
);
347 if (test_and_clear_bit(ATL1C_WORK_EVENT_LINK_CHANGE
,
348 &adapter
->work_event
))
349 atl1c_check_link_status(adapter
);
353 static void atl1c_del_timer(struct atl1c_adapter
*adapter
)
355 del_timer_sync(&adapter
->phy_config_timer
);
360 * atl1c_tx_timeout - Respond to a Tx Hang
361 * @netdev: network interface device structure
363 static void atl1c_tx_timeout(struct net_device
*netdev
)
365 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
367 /* Do the reset outside of interrupt context */
368 set_bit(ATL1C_WORK_EVENT_RESET
, &adapter
->work_event
);
369 schedule_work(&adapter
->common_task
);
373 * atl1c_set_multi - Multicast and Promiscuous mode set
374 * @netdev: network interface device structure
376 * The set_multi entry point is called whenever the multicast address
377 * list or the network interface flags are updated. This routine is
378 * responsible for configuring the hardware for proper multicast,
379 * promiscuous mode, and all-multi behavior.
381 static void atl1c_set_multi(struct net_device
*netdev
)
383 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
384 struct atl1c_hw
*hw
= &adapter
->hw
;
385 struct netdev_hw_addr
*ha
;
389 /* Check for Promiscuous and All Multicast modes */
390 AT_READ_REG(hw
, REG_MAC_CTRL
, &mac_ctrl_data
);
392 if (netdev
->flags
& IFF_PROMISC
) {
393 mac_ctrl_data
|= MAC_CTRL_PROMIS_EN
;
394 } else if (netdev
->flags
& IFF_ALLMULTI
) {
395 mac_ctrl_data
|= MAC_CTRL_MC_ALL_EN
;
396 mac_ctrl_data
&= ~MAC_CTRL_PROMIS_EN
;
398 mac_ctrl_data
&= ~(MAC_CTRL_PROMIS_EN
| MAC_CTRL_MC_ALL_EN
);
401 AT_WRITE_REG(hw
, REG_MAC_CTRL
, mac_ctrl_data
);
403 /* clear the old settings from the multicast hash table */
404 AT_WRITE_REG(hw
, REG_RX_HASH_TABLE
, 0);
405 AT_WRITE_REG_ARRAY(hw
, REG_RX_HASH_TABLE
, 1, 0);
407 /* comoute mc addresses' hash value ,and put it into hash table */
408 netdev_for_each_mc_addr(ha
, netdev
) {
409 hash_value
= atl1c_hash_mc_addr(hw
, ha
->addr
);
410 atl1c_hash_set(hw
, hash_value
);
414 static void __atl1c_vlan_mode(u32 features
, u32
*mac_ctrl_data
)
416 if (features
& NETIF_F_HW_VLAN_RX
) {
417 /* enable VLAN tag insert/strip */
418 *mac_ctrl_data
|= MAC_CTRL_RMV_VLAN
;
420 /* disable VLAN tag insert/strip */
421 *mac_ctrl_data
&= ~MAC_CTRL_RMV_VLAN
;
425 static void atl1c_vlan_mode(struct net_device
*netdev
, u32 features
)
427 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
428 struct pci_dev
*pdev
= adapter
->pdev
;
429 u32 mac_ctrl_data
= 0;
431 if (netif_msg_pktdata(adapter
))
432 dev_dbg(&pdev
->dev
, "atl1c_vlan_mode\n");
434 atl1c_irq_disable(adapter
);
435 AT_READ_REG(&adapter
->hw
, REG_MAC_CTRL
, &mac_ctrl_data
);
436 __atl1c_vlan_mode(features
, &mac_ctrl_data
);
437 AT_WRITE_REG(&adapter
->hw
, REG_MAC_CTRL
, mac_ctrl_data
);
438 atl1c_irq_enable(adapter
);
441 static void atl1c_restore_vlan(struct atl1c_adapter
*adapter
)
443 struct pci_dev
*pdev
= adapter
->pdev
;
445 if (netif_msg_pktdata(adapter
))
446 dev_dbg(&pdev
->dev
, "atl1c_restore_vlan\n");
447 atl1c_vlan_mode(adapter
->netdev
, adapter
->netdev
->features
);
451 * atl1c_set_mac - Change the Ethernet Address of the NIC
452 * @netdev: network interface device structure
453 * @p: pointer to an address structure
455 * Returns 0 on success, negative on failure
457 static int atl1c_set_mac_addr(struct net_device
*netdev
, void *p
)
459 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
460 struct sockaddr
*addr
= p
;
462 if (!is_valid_ether_addr(addr
->sa_data
))
463 return -EADDRNOTAVAIL
;
465 if (netif_running(netdev
))
468 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
469 memcpy(adapter
->hw
.mac_addr
, addr
->sa_data
, netdev
->addr_len
);
471 atl1c_hw_set_mac_addr(&adapter
->hw
);
476 static void atl1c_set_rxbufsize(struct atl1c_adapter
*adapter
,
477 struct net_device
*dev
)
481 adapter
->rx_buffer_len
= mtu
> AT_RX_BUF_SIZE
?
482 roundup(mtu
+ ETH_HLEN
+ ETH_FCS_LEN
+ VLAN_HLEN
, 8) : AT_RX_BUF_SIZE
;
485 static u32
atl1c_fix_features(struct net_device
*netdev
, u32 features
)
488 * Since there is no support for separate rx/tx vlan accel
489 * enable/disable make sure tx flag is always in same state as rx.
491 if (features
& NETIF_F_HW_VLAN_RX
)
492 features
|= NETIF_F_HW_VLAN_TX
;
494 features
&= ~NETIF_F_HW_VLAN_TX
;
496 if (netdev
->mtu
> MAX_TSO_FRAME_SIZE
)
497 features
&= ~(NETIF_F_TSO
| NETIF_F_TSO6
);
502 static int atl1c_set_features(struct net_device
*netdev
, u32 features
)
504 u32 changed
= netdev
->features
^ features
;
506 if (changed
& NETIF_F_HW_VLAN_RX
)
507 atl1c_vlan_mode(netdev
, features
);
513 * atl1c_change_mtu - Change the Maximum Transfer Unit
514 * @netdev: network interface device structure
515 * @new_mtu: new value for maximum frame size
517 * Returns 0 on success, negative on failure
519 static int atl1c_change_mtu(struct net_device
*netdev
, int new_mtu
)
521 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
522 int old_mtu
= netdev
->mtu
;
523 int max_frame
= new_mtu
+ ETH_HLEN
+ ETH_FCS_LEN
+ VLAN_HLEN
;
525 if ((max_frame
< ETH_ZLEN
+ ETH_FCS_LEN
) ||
526 (max_frame
> MAX_JUMBO_FRAME_SIZE
)) {
527 if (netif_msg_link(adapter
))
528 dev_warn(&adapter
->pdev
->dev
, "invalid MTU setting\n");
532 if (old_mtu
!= new_mtu
&& netif_running(netdev
)) {
533 while (test_and_set_bit(__AT_RESETTING
, &adapter
->flags
))
535 netdev
->mtu
= new_mtu
;
536 adapter
->hw
.max_frame_size
= new_mtu
;
537 atl1c_set_rxbufsize(adapter
, netdev
);
539 netdev_update_features(netdev
);
541 clear_bit(__AT_RESETTING
, &adapter
->flags
);
542 if (adapter
->hw
.ctrl_flags
& ATL1C_FPGA_VERSION
) {
545 AT_READ_REG(&adapter
->hw
, 0x1414, &phy_data
);
546 phy_data
|= 0x10000000;
547 AT_WRITE_REG(&adapter
->hw
, 0x1414, phy_data
);
555 * caller should hold mdio_lock
557 static int atl1c_mdio_read(struct net_device
*netdev
, int phy_id
, int reg_num
)
559 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
562 atl1c_read_phy_reg(&adapter
->hw
, reg_num
& MDIO_REG_ADDR_MASK
, &result
);
566 static void atl1c_mdio_write(struct net_device
*netdev
, int phy_id
,
567 int reg_num
, int val
)
569 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
571 atl1c_write_phy_reg(&adapter
->hw
, reg_num
& MDIO_REG_ADDR_MASK
, val
);
580 static int atl1c_mii_ioctl(struct net_device
*netdev
,
581 struct ifreq
*ifr
, int cmd
)
583 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
584 struct pci_dev
*pdev
= adapter
->pdev
;
585 struct mii_ioctl_data
*data
= if_mii(ifr
);
589 if (!netif_running(netdev
))
592 spin_lock_irqsave(&adapter
->mdio_lock
, flags
);
599 if (atl1c_read_phy_reg(&adapter
->hw
, data
->reg_num
& 0x1F,
607 if (data
->reg_num
& ~(0x1F)) {
612 dev_dbg(&pdev
->dev
, "<atl1c_mii_ioctl> write %x %x",
613 data
->reg_num
, data
->val_in
);
614 if (atl1c_write_phy_reg(&adapter
->hw
,
615 data
->reg_num
, data
->val_in
)) {
622 retval
= -EOPNOTSUPP
;
626 spin_unlock_irqrestore(&adapter
->mdio_lock
, flags
);
636 static int atl1c_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
642 return atl1c_mii_ioctl(netdev
, ifr
, cmd
);
649 * atl1c_alloc_queues - Allocate memory for all rings
650 * @adapter: board private structure to initialize
653 static int __devinit
atl1c_alloc_queues(struct atl1c_adapter
*adapter
)
658 static void atl1c_set_mac_type(struct atl1c_hw
*hw
)
660 switch (hw
->device_id
) {
661 case PCI_DEVICE_ID_ATTANSIC_L2C
:
662 hw
->nic_type
= athr_l2c
;
664 case PCI_DEVICE_ID_ATTANSIC_L1C
:
665 hw
->nic_type
= athr_l1c
;
667 case PCI_DEVICE_ID_ATHEROS_L2C_B
:
668 hw
->nic_type
= athr_l2c_b
;
670 case PCI_DEVICE_ID_ATHEROS_L2C_B2
:
671 hw
->nic_type
= athr_l2c_b2
;
673 case PCI_DEVICE_ID_ATHEROS_L1D
:
674 hw
->nic_type
= athr_l1d
;
676 case PCI_DEVICE_ID_ATHEROS_L1D_2_0
:
677 hw
->nic_type
= athr_l1d_2
;
684 static int atl1c_setup_mac_funcs(struct atl1c_hw
*hw
)
689 atl1c_set_mac_type(hw
);
690 AT_READ_REG(hw
, REG_PHY_STATUS
, &phy_status_data
);
691 AT_READ_REG(hw
, REG_LINK_CTRL
, &link_ctrl_data
);
693 hw
->ctrl_flags
= ATL1C_INTR_MODRT_ENABLE
|
694 ATL1C_TXQ_MODE_ENHANCE
;
695 if (link_ctrl_data
& LINK_CTRL_L0S_EN
)
696 hw
->ctrl_flags
|= ATL1C_ASPM_L0S_SUPPORT
;
697 if (link_ctrl_data
& LINK_CTRL_L1_EN
)
698 hw
->ctrl_flags
|= ATL1C_ASPM_L1_SUPPORT
;
699 if (link_ctrl_data
& LINK_CTRL_EXT_SYNC
)
700 hw
->ctrl_flags
|= ATL1C_LINK_EXT_SYNC
;
701 hw
->ctrl_flags
|= ATL1C_ASPM_CTRL_MON
;
703 if (hw
->nic_type
== athr_l1c
||
704 hw
->nic_type
== athr_l1d
||
705 hw
->nic_type
== athr_l1d_2
)
706 hw
->link_cap_flags
|= ATL1C_LINK_CAP_1000M
;
710 * atl1c_sw_init - Initialize general software structures (struct atl1c_adapter)
711 * @adapter: board private structure to initialize
713 * atl1c_sw_init initializes the Adapter private data structure.
714 * Fields are initialized based on PCI device information and
715 * OS network device settings (MTU size).
717 static int __devinit
atl1c_sw_init(struct atl1c_adapter
*adapter
)
719 struct atl1c_hw
*hw
= &adapter
->hw
;
720 struct pci_dev
*pdev
= adapter
->pdev
;
725 device_set_wakeup_enable(&pdev
->dev
, false);
726 adapter
->link_speed
= SPEED_0
;
727 adapter
->link_duplex
= FULL_DUPLEX
;
728 adapter
->num_rx_queues
= AT_DEF_RECEIVE_QUEUE
;
729 adapter
->tpd_ring
[0].count
= 1024;
730 adapter
->rfd_ring
[0].count
= 512;
732 hw
->vendor_id
= pdev
->vendor
;
733 hw
->device_id
= pdev
->device
;
734 hw
->subsystem_vendor_id
= pdev
->subsystem_vendor
;
735 hw
->subsystem_id
= pdev
->subsystem_device
;
736 AT_READ_REG(hw
, PCI_CLASS_REVISION
, &revision
);
737 hw
->revision_id
= revision
& 0xFF;
738 /* before link up, we assume hibernate is true */
739 hw
->hibernate
= true;
740 hw
->media_type
= MEDIA_TYPE_AUTO_SENSOR
;
741 if (atl1c_setup_mac_funcs(hw
) != 0) {
742 dev_err(&pdev
->dev
, "set mac function pointers failed\n");
745 hw
->intr_mask
= IMR_NORMAL_MASK
;
746 hw
->phy_configured
= false;
747 hw
->preamble_len
= 7;
748 hw
->max_frame_size
= adapter
->netdev
->mtu
;
749 if (adapter
->num_rx_queues
< 2) {
750 hw
->rss_type
= atl1c_rss_disable
;
751 hw
->rss_mode
= atl1c_rss_mode_disable
;
753 hw
->rss_type
= atl1c_rss_ipv4
;
754 hw
->rss_mode
= atl1c_rss_mul_que_mul_int
;
755 hw
->rss_hash_bits
= 16;
757 hw
->autoneg_advertised
= ADVERTISED_Autoneg
;
758 hw
->indirect_tab
= 0xE4E4E4E4;
761 hw
->ict
= 50000; /* 100ms */
762 hw
->smb_timer
= 200000; /* 400ms */
764 hw
->cmb_tx_timer
= 1; /* 2 us */
770 hw
->dma_order
= atl1c_dma_ord_out
;
771 hw
->dmar_block
= atl1c_dma_req_1024
;
772 hw
->dmaw_block
= atl1c_dma_req_1024
;
773 hw
->dmar_dly_cnt
= 15;
774 hw
->dmaw_dly_cnt
= 4;
776 if (atl1c_alloc_queues(adapter
)) {
777 dev_err(&pdev
->dev
, "Unable to allocate memory for queues\n");
781 atl1c_set_rxbufsize(adapter
, adapter
->netdev
);
782 atomic_set(&adapter
->irq_sem
, 1);
783 spin_lock_init(&adapter
->mdio_lock
);
784 spin_lock_init(&adapter
->tx_lock
);
785 set_bit(__AT_DOWN
, &adapter
->flags
);
790 static inline void atl1c_clean_buffer(struct pci_dev
*pdev
,
791 struct atl1c_buffer
*buffer_info
, int in_irq
)
794 if (buffer_info
->flags
& ATL1C_BUFFER_FREE
)
796 if (buffer_info
->dma
) {
797 if (buffer_info
->flags
& ATL1C_PCIMAP_FROMDEVICE
)
798 pci_driection
= PCI_DMA_FROMDEVICE
;
800 pci_driection
= PCI_DMA_TODEVICE
;
802 if (buffer_info
->flags
& ATL1C_PCIMAP_SINGLE
)
803 pci_unmap_single(pdev
, buffer_info
->dma
,
804 buffer_info
->length
, pci_driection
);
805 else if (buffer_info
->flags
& ATL1C_PCIMAP_PAGE
)
806 pci_unmap_page(pdev
, buffer_info
->dma
,
807 buffer_info
->length
, pci_driection
);
809 if (buffer_info
->skb
) {
811 dev_kfree_skb_irq(buffer_info
->skb
);
813 dev_kfree_skb(buffer_info
->skb
);
815 buffer_info
->dma
= 0;
816 buffer_info
->skb
= NULL
;
817 ATL1C_SET_BUFFER_STATE(buffer_info
, ATL1C_BUFFER_FREE
);
820 * atl1c_clean_tx_ring - Free Tx-skb
821 * @adapter: board private structure
823 static void atl1c_clean_tx_ring(struct atl1c_adapter
*adapter
,
824 enum atl1c_trans_queue type
)
826 struct atl1c_tpd_ring
*tpd_ring
= &adapter
->tpd_ring
[type
];
827 struct atl1c_buffer
*buffer_info
;
828 struct pci_dev
*pdev
= adapter
->pdev
;
829 u16 index
, ring_count
;
831 ring_count
= tpd_ring
->count
;
832 for (index
= 0; index
< ring_count
; index
++) {
833 buffer_info
= &tpd_ring
->buffer_info
[index
];
834 atl1c_clean_buffer(pdev
, buffer_info
, 0);
837 /* Zero out Tx-buffers */
838 memset(tpd_ring
->desc
, 0, sizeof(struct atl1c_tpd_desc
) *
840 atomic_set(&tpd_ring
->next_to_clean
, 0);
841 tpd_ring
->next_to_use
= 0;
845 * atl1c_clean_rx_ring - Free rx-reservation skbs
846 * @adapter: board private structure
848 static void atl1c_clean_rx_ring(struct atl1c_adapter
*adapter
)
850 struct atl1c_rfd_ring
*rfd_ring
= adapter
->rfd_ring
;
851 struct atl1c_rrd_ring
*rrd_ring
= adapter
->rrd_ring
;
852 struct atl1c_buffer
*buffer_info
;
853 struct pci_dev
*pdev
= adapter
->pdev
;
856 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
857 for (j
= 0; j
< rfd_ring
[i
].count
; j
++) {
858 buffer_info
= &rfd_ring
[i
].buffer_info
[j
];
859 atl1c_clean_buffer(pdev
, buffer_info
, 0);
861 /* zero out the descriptor ring */
862 memset(rfd_ring
[i
].desc
, 0, rfd_ring
[i
].size
);
863 rfd_ring
[i
].next_to_clean
= 0;
864 rfd_ring
[i
].next_to_use
= 0;
865 rrd_ring
[i
].next_to_use
= 0;
866 rrd_ring
[i
].next_to_clean
= 0;
871 * Read / Write Ptr Initialize:
873 static void atl1c_init_ring_ptrs(struct atl1c_adapter
*adapter
)
875 struct atl1c_tpd_ring
*tpd_ring
= adapter
->tpd_ring
;
876 struct atl1c_rfd_ring
*rfd_ring
= adapter
->rfd_ring
;
877 struct atl1c_rrd_ring
*rrd_ring
= adapter
->rrd_ring
;
878 struct atl1c_buffer
*buffer_info
;
881 for (i
= 0; i
< AT_MAX_TRANSMIT_QUEUE
; i
++) {
882 tpd_ring
[i
].next_to_use
= 0;
883 atomic_set(&tpd_ring
[i
].next_to_clean
, 0);
884 buffer_info
= tpd_ring
[i
].buffer_info
;
885 for (j
= 0; j
< tpd_ring
->count
; j
++)
886 ATL1C_SET_BUFFER_STATE(&buffer_info
[i
],
889 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
890 rfd_ring
[i
].next_to_use
= 0;
891 rfd_ring
[i
].next_to_clean
= 0;
892 rrd_ring
[i
].next_to_use
= 0;
893 rrd_ring
[i
].next_to_clean
= 0;
894 for (j
= 0; j
< rfd_ring
[i
].count
; j
++) {
895 buffer_info
= &rfd_ring
[i
].buffer_info
[j
];
896 ATL1C_SET_BUFFER_STATE(buffer_info
, ATL1C_BUFFER_FREE
);
902 * atl1c_free_ring_resources - Free Tx / RX descriptor Resources
903 * @adapter: board private structure
905 * Free all transmit software resources
907 static void atl1c_free_ring_resources(struct atl1c_adapter
*adapter
)
909 struct pci_dev
*pdev
= adapter
->pdev
;
911 pci_free_consistent(pdev
, adapter
->ring_header
.size
,
912 adapter
->ring_header
.desc
,
913 adapter
->ring_header
.dma
);
914 adapter
->ring_header
.desc
= NULL
;
916 /* Note: just free tdp_ring.buffer_info,
917 * it contain rfd_ring.buffer_info, do not double free */
918 if (adapter
->tpd_ring
[0].buffer_info
) {
919 kfree(adapter
->tpd_ring
[0].buffer_info
);
920 adapter
->tpd_ring
[0].buffer_info
= NULL
;
925 * atl1c_setup_mem_resources - allocate Tx / RX descriptor resources
926 * @adapter: board private structure
928 * Return 0 on success, negative on failure
930 static int atl1c_setup_ring_resources(struct atl1c_adapter
*adapter
)
932 struct pci_dev
*pdev
= adapter
->pdev
;
933 struct atl1c_tpd_ring
*tpd_ring
= adapter
->tpd_ring
;
934 struct atl1c_rfd_ring
*rfd_ring
= adapter
->rfd_ring
;
935 struct atl1c_rrd_ring
*rrd_ring
= adapter
->rrd_ring
;
936 struct atl1c_ring_header
*ring_header
= &adapter
->ring_header
;
937 int num_rx_queues
= adapter
->num_rx_queues
;
941 int rx_desc_count
= 0;
944 rrd_ring
[0].count
= rfd_ring
[0].count
;
945 for (i
= 1; i
< AT_MAX_TRANSMIT_QUEUE
; i
++)
946 tpd_ring
[i
].count
= tpd_ring
[0].count
;
948 for (i
= 1; i
< adapter
->num_rx_queues
; i
++)
949 rfd_ring
[i
].count
= rrd_ring
[i
].count
= rfd_ring
[0].count
;
951 /* 2 tpd queue, one high priority queue,
952 * another normal priority queue */
953 size
= sizeof(struct atl1c_buffer
) * (tpd_ring
->count
* 2 +
954 rfd_ring
->count
* num_rx_queues
);
955 tpd_ring
->buffer_info
= kzalloc(size
, GFP_KERNEL
);
956 if (unlikely(!tpd_ring
->buffer_info
)) {
957 dev_err(&pdev
->dev
, "kzalloc failed, size = %d\n",
961 for (i
= 0; i
< AT_MAX_TRANSMIT_QUEUE
; i
++) {
962 tpd_ring
[i
].buffer_info
=
963 (struct atl1c_buffer
*) (tpd_ring
->buffer_info
+ count
);
964 count
+= tpd_ring
[i
].count
;
967 for (i
= 0; i
< num_rx_queues
; i
++) {
968 rfd_ring
[i
].buffer_info
=
969 (struct atl1c_buffer
*) (tpd_ring
->buffer_info
+ count
);
970 count
+= rfd_ring
[i
].count
;
971 rx_desc_count
+= rfd_ring
[i
].count
;
974 * real ring DMA buffer
975 * each ring/block may need up to 8 bytes for alignment, hence the
976 * additional bytes tacked onto the end.
978 ring_header
->size
= size
=
979 sizeof(struct atl1c_tpd_desc
) * tpd_ring
->count
* 2 +
980 sizeof(struct atl1c_rx_free_desc
) * rx_desc_count
+
981 sizeof(struct atl1c_recv_ret_status
) * rx_desc_count
+
982 sizeof(struct atl1c_hw_stats
) +
983 8 * 4 + 8 * 2 * num_rx_queues
;
985 ring_header
->desc
= pci_alloc_consistent(pdev
, ring_header
->size
,
987 if (unlikely(!ring_header
->desc
)) {
988 dev_err(&pdev
->dev
, "pci_alloc_consistend failed\n");
991 memset(ring_header
->desc
, 0, ring_header
->size
);
994 tpd_ring
[0].dma
= roundup(ring_header
->dma
, 8);
995 offset
= tpd_ring
[0].dma
- ring_header
->dma
;
996 for (i
= 0; i
< AT_MAX_TRANSMIT_QUEUE
; i
++) {
997 tpd_ring
[i
].dma
= ring_header
->dma
+ offset
;
998 tpd_ring
[i
].desc
= (u8
*) ring_header
->desc
+ offset
;
1000 sizeof(struct atl1c_tpd_desc
) * tpd_ring
[i
].count
;
1001 offset
+= roundup(tpd_ring
[i
].size
, 8);
1004 for (i
= 0; i
< num_rx_queues
; i
++) {
1005 rfd_ring
[i
].dma
= ring_header
->dma
+ offset
;
1006 rfd_ring
[i
].desc
= (u8
*) ring_header
->desc
+ offset
;
1007 rfd_ring
[i
].size
= sizeof(struct atl1c_rx_free_desc
) *
1009 offset
+= roundup(rfd_ring
[i
].size
, 8);
1013 for (i
= 0; i
< num_rx_queues
; i
++) {
1014 rrd_ring
[i
].dma
= ring_header
->dma
+ offset
;
1015 rrd_ring
[i
].desc
= (u8
*) ring_header
->desc
+ offset
;
1016 rrd_ring
[i
].size
= sizeof(struct atl1c_recv_ret_status
) *
1018 offset
+= roundup(rrd_ring
[i
].size
, 8);
1021 adapter
->smb
.dma
= ring_header
->dma
+ offset
;
1022 adapter
->smb
.smb
= (u8
*)ring_header
->desc
+ offset
;
1026 kfree(tpd_ring
->buffer_info
);
1030 static void atl1c_configure_des_ring(struct atl1c_adapter
*adapter
)
1032 struct atl1c_hw
*hw
= &adapter
->hw
;
1033 struct atl1c_rfd_ring
*rfd_ring
= (struct atl1c_rfd_ring
*)
1035 struct atl1c_rrd_ring
*rrd_ring
= (struct atl1c_rrd_ring
*)
1037 struct atl1c_tpd_ring
*tpd_ring
= (struct atl1c_tpd_ring
*)
1039 struct atl1c_cmb
*cmb
= (struct atl1c_cmb
*) &adapter
->cmb
;
1040 struct atl1c_smb
*smb
= (struct atl1c_smb
*) &adapter
->smb
;
1045 AT_WRITE_REG(hw
, REG_TX_BASE_ADDR_HI
,
1046 (u32
)((tpd_ring
[atl1c_trans_normal
].dma
&
1047 AT_DMA_HI_ADDR_MASK
) >> 32));
1048 /* just enable normal priority TX queue */
1049 AT_WRITE_REG(hw
, REG_NTPD_HEAD_ADDR_LO
,
1050 (u32
)(tpd_ring
[atl1c_trans_normal
].dma
&
1051 AT_DMA_LO_ADDR_MASK
));
1052 AT_WRITE_REG(hw
, REG_HTPD_HEAD_ADDR_LO
,
1053 (u32
)(tpd_ring
[atl1c_trans_high
].dma
&
1054 AT_DMA_LO_ADDR_MASK
));
1055 AT_WRITE_REG(hw
, REG_TPD_RING_SIZE
,
1056 (u32
)(tpd_ring
[0].count
& TPD_RING_SIZE_MASK
));
1060 AT_WRITE_REG(hw
, REG_RX_BASE_ADDR_HI
,
1061 (u32
)((rfd_ring
[0].dma
& AT_DMA_HI_ADDR_MASK
) >> 32));
1062 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
1063 AT_WRITE_REG(hw
, atl1c_rfd_addr_lo_regs
[i
],
1064 (u32
)(rfd_ring
[i
].dma
& AT_DMA_LO_ADDR_MASK
));
1066 AT_WRITE_REG(hw
, REG_RFD_RING_SIZE
,
1067 rfd_ring
[0].count
& RFD_RING_SIZE_MASK
);
1068 AT_WRITE_REG(hw
, REG_RX_BUF_SIZE
,
1069 adapter
->rx_buffer_len
& RX_BUF_SIZE_MASK
);
1072 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
1073 AT_WRITE_REG(hw
, atl1c_rrd_addr_lo_regs
[i
],
1074 (u32
)(rrd_ring
[i
].dma
& AT_DMA_LO_ADDR_MASK
));
1075 AT_WRITE_REG(hw
, REG_RRD_RING_SIZE
,
1076 (rrd_ring
[0].count
& RRD_RING_SIZE_MASK
));
1079 AT_WRITE_REG(hw
, REG_CMB_BASE_ADDR_LO
, cmb
->dma
& AT_DMA_LO_ADDR_MASK
);
1082 AT_WRITE_REG(hw
, REG_SMB_BASE_ADDR_HI
,
1083 (u32
)((smb
->dma
& AT_DMA_HI_ADDR_MASK
) >> 32));
1084 AT_WRITE_REG(hw
, REG_SMB_BASE_ADDR_LO
,
1085 (u32
)(smb
->dma
& AT_DMA_LO_ADDR_MASK
));
1086 if (hw
->nic_type
== athr_l2c_b
) {
1087 AT_WRITE_REG(hw
, REG_SRAM_RXF_LEN
, 0x02a0L
);
1088 AT_WRITE_REG(hw
, REG_SRAM_TXF_LEN
, 0x0100L
);
1089 AT_WRITE_REG(hw
, REG_SRAM_RXF_ADDR
, 0x029f0000L
);
1090 AT_WRITE_REG(hw
, REG_SRAM_RFD0_INFO
, 0x02bf02a0L
);
1091 AT_WRITE_REG(hw
, REG_SRAM_TXF_ADDR
, 0x03bf02c0L
);
1092 AT_WRITE_REG(hw
, REG_SRAM_TRD_ADDR
, 0x03df03c0L
);
1093 AT_WRITE_REG(hw
, REG_TXF_WATER_MARK
, 0); /* TX watermark, to enter l1 state.*/
1094 AT_WRITE_REG(hw
, REG_RXD_DMA_CTRL
, 0); /* RXD threshold.*/
1096 if (hw
->nic_type
== athr_l2c_b
|| hw
->nic_type
== athr_l1d_2
) {
1097 /* Power Saving for L2c_B */
1098 AT_READ_REG(hw
, REG_SERDES_LOCK
, &data
);
1099 data
|= SERDES_MAC_CLK_SLOWDOWN
;
1100 data
|= SERDES_PYH_CLK_SLOWDOWN
;
1101 AT_WRITE_REG(hw
, REG_SERDES_LOCK
, data
);
1103 /* Load all of base address above */
1104 AT_WRITE_REG(hw
, REG_LOAD_PTR
, 1);
1107 static void atl1c_configure_tx(struct atl1c_adapter
*adapter
)
1109 struct atl1c_hw
*hw
= &adapter
->hw
;
1112 u16 tx_offload_thresh
;
1114 u32 max_pay_load_data
;
1116 tx_offload_thresh
= MAX_TX_OFFLOAD_THRESH
;
1117 AT_WRITE_REG(hw
, REG_TX_TSO_OFFLOAD_THRESH
,
1118 (tx_offload_thresh
>> 3) & TX_TSO_OFFLOAD_THRESH_MASK
);
1119 AT_READ_REG(hw
, REG_DEVICE_CTRL
, &dev_ctrl_data
);
1120 max_pay_load
= (dev_ctrl_data
>> DEVICE_CTRL_MAX_PAYLOAD_SHIFT
) &
1121 DEVICE_CTRL_MAX_PAYLOAD_MASK
;
1122 hw
->dmaw_block
= min_t(u32
, max_pay_load
, hw
->dmaw_block
);
1123 max_pay_load
= (dev_ctrl_data
>> DEVICE_CTRL_MAX_RREQ_SZ_SHIFT
) &
1124 DEVICE_CTRL_MAX_RREQ_SZ_MASK
;
1125 hw
->dmar_block
= min_t(u32
, max_pay_load
, hw
->dmar_block
);
1127 txq_ctrl_data
= (hw
->tpd_burst
& TXQ_NUM_TPD_BURST_MASK
) <<
1128 TXQ_NUM_TPD_BURST_SHIFT
;
1129 if (hw
->ctrl_flags
& ATL1C_TXQ_MODE_ENHANCE
)
1130 txq_ctrl_data
|= TXQ_CTRL_ENH_MODE
;
1131 max_pay_load_data
= (atl1c_pay_load_size
[hw
->dmar_block
] &
1132 TXQ_TXF_BURST_NUM_MASK
) << TXQ_TXF_BURST_NUM_SHIFT
;
1133 if (hw
->nic_type
== athr_l2c_b
|| hw
->nic_type
== athr_l2c_b2
)
1134 max_pay_load_data
>>= 1;
1135 txq_ctrl_data
|= max_pay_load_data
;
1137 AT_WRITE_REG(hw
, REG_TXQ_CTRL
, txq_ctrl_data
);
1140 static void atl1c_configure_rx(struct atl1c_adapter
*adapter
)
1142 struct atl1c_hw
*hw
= &adapter
->hw
;
1145 rxq_ctrl_data
= (hw
->rfd_burst
& RXQ_RFD_BURST_NUM_MASK
) <<
1146 RXQ_RFD_BURST_NUM_SHIFT
;
1148 if (hw
->ctrl_flags
& ATL1C_RX_IPV6_CHKSUM
)
1149 rxq_ctrl_data
|= IPV6_CHKSUM_CTRL_EN
;
1150 if (hw
->rss_type
== atl1c_rss_ipv4
)
1151 rxq_ctrl_data
|= RSS_HASH_IPV4
;
1152 if (hw
->rss_type
== atl1c_rss_ipv4_tcp
)
1153 rxq_ctrl_data
|= RSS_HASH_IPV4_TCP
;
1154 if (hw
->rss_type
== atl1c_rss_ipv6
)
1155 rxq_ctrl_data
|= RSS_HASH_IPV6
;
1156 if (hw
->rss_type
== atl1c_rss_ipv6_tcp
)
1157 rxq_ctrl_data
|= RSS_HASH_IPV6_TCP
;
1158 if (hw
->rss_type
!= atl1c_rss_disable
)
1159 rxq_ctrl_data
|= RRS_HASH_CTRL_EN
;
1161 rxq_ctrl_data
|= (hw
->rss_mode
& RSS_MODE_MASK
) <<
1163 rxq_ctrl_data
|= (hw
->rss_hash_bits
& RSS_HASH_BITS_MASK
) <<
1164 RSS_HASH_BITS_SHIFT
;
1165 if (hw
->ctrl_flags
& ATL1C_ASPM_CTRL_MON
)
1166 rxq_ctrl_data
|= (ASPM_THRUPUT_LIMIT_1M
&
1167 ASPM_THRUPUT_LIMIT_MASK
) << ASPM_THRUPUT_LIMIT_SHIFT
;
1169 AT_WRITE_REG(hw
, REG_RXQ_CTRL
, rxq_ctrl_data
);
1172 static void atl1c_configure_rss(struct atl1c_adapter
*adapter
)
1174 struct atl1c_hw
*hw
= &adapter
->hw
;
1176 AT_WRITE_REG(hw
, REG_IDT_TABLE
, hw
->indirect_tab
);
1177 AT_WRITE_REG(hw
, REG_BASE_CPU_NUMBER
, hw
->base_cpu
);
1180 static void atl1c_configure_dma(struct atl1c_adapter
*adapter
)
1182 struct atl1c_hw
*hw
= &adapter
->hw
;
1185 dma_ctrl_data
= DMA_CTRL_DMAR_REQ_PRI
;
1186 if (hw
->ctrl_flags
& ATL1C_CMB_ENABLE
)
1187 dma_ctrl_data
|= DMA_CTRL_CMB_EN
;
1188 if (hw
->ctrl_flags
& ATL1C_SMB_ENABLE
)
1189 dma_ctrl_data
|= DMA_CTRL_SMB_EN
;
1191 dma_ctrl_data
|= MAC_CTRL_SMB_DIS
;
1193 switch (hw
->dma_order
) {
1194 case atl1c_dma_ord_in
:
1195 dma_ctrl_data
|= DMA_CTRL_DMAR_IN_ORDER
;
1197 case atl1c_dma_ord_enh
:
1198 dma_ctrl_data
|= DMA_CTRL_DMAR_ENH_ORDER
;
1200 case atl1c_dma_ord_out
:
1201 dma_ctrl_data
|= DMA_CTRL_DMAR_OUT_ORDER
;
1207 dma_ctrl_data
|= (((u32
)hw
->dmar_block
) & DMA_CTRL_DMAR_BURST_LEN_MASK
)
1208 << DMA_CTRL_DMAR_BURST_LEN_SHIFT
;
1209 dma_ctrl_data
|= (((u32
)hw
->dmaw_block
) & DMA_CTRL_DMAW_BURST_LEN_MASK
)
1210 << DMA_CTRL_DMAW_BURST_LEN_SHIFT
;
1211 dma_ctrl_data
|= (((u32
)hw
->dmar_dly_cnt
) & DMA_CTRL_DMAR_DLY_CNT_MASK
)
1212 << DMA_CTRL_DMAR_DLY_CNT_SHIFT
;
1213 dma_ctrl_data
|= (((u32
)hw
->dmaw_dly_cnt
) & DMA_CTRL_DMAW_DLY_CNT_MASK
)
1214 << DMA_CTRL_DMAW_DLY_CNT_SHIFT
;
1216 AT_WRITE_REG(hw
, REG_DMA_CTRL
, dma_ctrl_data
);
1220 * Stop the mac, transmit and receive units
1221 * hw - Struct containing variables accessed by shared code
1222 * return : 0 or idle status (if error)
1224 static int atl1c_stop_mac(struct atl1c_hw
*hw
)
1228 AT_READ_REG(hw
, REG_RXQ_CTRL
, &data
);
1229 data
&= ~(RXQ1_CTRL_EN
| RXQ2_CTRL_EN
|
1230 RXQ3_CTRL_EN
| RXQ_CTRL_EN
);
1231 AT_WRITE_REG(hw
, REG_RXQ_CTRL
, data
);
1233 AT_READ_REG(hw
, REG_TXQ_CTRL
, &data
);
1234 data
&= ~TXQ_CTRL_EN
;
1235 AT_WRITE_REG(hw
, REG_TWSI_CTRL
, data
);
1237 atl1c_wait_until_idle(hw
);
1239 AT_READ_REG(hw
, REG_MAC_CTRL
, &data
);
1240 data
&= ~(MAC_CTRL_TX_EN
| MAC_CTRL_RX_EN
);
1241 AT_WRITE_REG(hw
, REG_MAC_CTRL
, data
);
1243 return (int)atl1c_wait_until_idle(hw
);
1246 static void atl1c_enable_rx_ctrl(struct atl1c_hw
*hw
)
1250 AT_READ_REG(hw
, REG_RXQ_CTRL
, &data
);
1251 switch (hw
->adapter
->num_rx_queues
) {
1253 data
|= (RXQ3_CTRL_EN
| RXQ2_CTRL_EN
| RXQ1_CTRL_EN
);
1256 data
|= (RXQ2_CTRL_EN
| RXQ1_CTRL_EN
);
1259 data
|= RXQ1_CTRL_EN
;
1264 data
|= RXQ_CTRL_EN
;
1265 AT_WRITE_REG(hw
, REG_RXQ_CTRL
, data
);
1268 static void atl1c_enable_tx_ctrl(struct atl1c_hw
*hw
)
1272 AT_READ_REG(hw
, REG_TXQ_CTRL
, &data
);
1273 data
|= TXQ_CTRL_EN
;
1274 AT_WRITE_REG(hw
, REG_TXQ_CTRL
, data
);
1278 * Reset the transmit and receive units; mask and clear all interrupts.
1279 * hw - Struct containing variables accessed by shared code
1280 * return : 0 or idle status (if error)
1282 static int atl1c_reset_mac(struct atl1c_hw
*hw
)
1284 struct atl1c_adapter
*adapter
= (struct atl1c_adapter
*)hw
->adapter
;
1285 struct pci_dev
*pdev
= adapter
->pdev
;
1286 u32 master_ctrl_data
= 0;
1288 AT_WRITE_REG(hw
, REG_IMR
, 0);
1289 AT_WRITE_REG(hw
, REG_ISR
, ISR_DIS_INT
);
1293 * Issue Soft Reset to the MAC. This will reset the chip's
1294 * transmit, receive, DMA. It will not effect
1295 * the current PCI configuration. The global reset bit is self-
1296 * clearing, and should clear within a microsecond.
1298 AT_READ_REG(hw
, REG_MASTER_CTRL
, &master_ctrl_data
);
1299 master_ctrl_data
|= MASTER_CTRL_OOB_DIS_OFF
;
1300 AT_WRITE_REGW(hw
, REG_MASTER_CTRL
, ((master_ctrl_data
| MASTER_CTRL_SOFT_RST
)
1305 /* Wait at least 10ms for All module to be Idle */
1307 if (atl1c_wait_until_idle(hw
)) {
1309 "MAC state machine can't be idle since"
1310 " disabled for 10ms second\n");
1316 static void atl1c_disable_l0s_l1(struct atl1c_hw
*hw
)
1320 AT_READ_REG(hw
, REG_PM_CTRL
, &pm_ctrl_data
);
1321 pm_ctrl_data
&= ~(PM_CTRL_L1_ENTRY_TIMER_MASK
<<
1322 PM_CTRL_L1_ENTRY_TIMER_SHIFT
);
1323 pm_ctrl_data
&= ~PM_CTRL_CLK_SWH_L1
;
1324 pm_ctrl_data
&= ~PM_CTRL_ASPM_L0S_EN
;
1325 pm_ctrl_data
&= ~PM_CTRL_ASPM_L1_EN
;
1326 pm_ctrl_data
&= ~PM_CTRL_MAC_ASPM_CHK
;
1327 pm_ctrl_data
&= ~PM_CTRL_SERDES_PD_EX_L1
;
1329 pm_ctrl_data
|= PM_CTRL_SERDES_BUDS_RX_L1_EN
;
1330 pm_ctrl_data
|= PM_CTRL_SERDES_PLL_L1_EN
;
1331 pm_ctrl_data
|= PM_CTRL_SERDES_L1_EN
;
1332 AT_WRITE_REG(hw
, REG_PM_CTRL
, pm_ctrl_data
);
1337 * Enable/disable L0s/L1 depend on link state.
1339 static void atl1c_set_aspm(struct atl1c_hw
*hw
, bool linkup
)
1343 u32 link_l1_timer
= 0xF;
1345 AT_READ_REG(hw
, REG_PM_CTRL
, &pm_ctrl_data
);
1346 AT_READ_REG(hw
, REG_LINK_CTRL
, &link_ctrl_data
);
1348 pm_ctrl_data
&= ~PM_CTRL_SERDES_PD_EX_L1
;
1349 pm_ctrl_data
&= ~(PM_CTRL_L1_ENTRY_TIMER_MASK
<<
1350 PM_CTRL_L1_ENTRY_TIMER_SHIFT
);
1351 pm_ctrl_data
&= ~(PM_CTRL_LCKDET_TIMER_MASK
<<
1352 PM_CTRL_LCKDET_TIMER_SHIFT
);
1353 pm_ctrl_data
|= AT_LCKDET_TIMER
<< PM_CTRL_LCKDET_TIMER_SHIFT
;
1355 if (hw
->nic_type
== athr_l2c_b
|| hw
->nic_type
== athr_l1d
||
1356 hw
->nic_type
== athr_l2c_b2
|| hw
->nic_type
== athr_l1d_2
) {
1357 link_ctrl_data
&= ~LINK_CTRL_EXT_SYNC
;
1358 if (!(hw
->ctrl_flags
& ATL1C_APS_MODE_ENABLE
)) {
1359 if (hw
->nic_type
== athr_l2c_b
&& hw
->revision_id
== L2CB_V10
)
1360 link_ctrl_data
|= LINK_CTRL_EXT_SYNC
;
1363 AT_WRITE_REG(hw
, REG_LINK_CTRL
, link_ctrl_data
);
1365 pm_ctrl_data
|= PM_CTRL_RCVR_WT_TIMER
;
1366 pm_ctrl_data
&= ~(PM_CTRL_PM_REQ_TIMER_MASK
<<
1367 PM_CTRL_PM_REQ_TIMER_SHIFT
);
1368 pm_ctrl_data
|= AT_ASPM_L1_TIMER
<<
1369 PM_CTRL_PM_REQ_TIMER_SHIFT
;
1370 pm_ctrl_data
&= ~PM_CTRL_SA_DLY_EN
;
1371 pm_ctrl_data
&= ~PM_CTRL_HOTRST
;
1372 pm_ctrl_data
|= 1 << PM_CTRL_L1_ENTRY_TIMER_SHIFT
;
1373 pm_ctrl_data
|= PM_CTRL_SERDES_PD_EX_L1
;
1375 pm_ctrl_data
|= PM_CTRL_MAC_ASPM_CHK
;
1377 pm_ctrl_data
&= ~PM_CTRL_ASPM_L1_EN
;
1378 pm_ctrl_data
&= ~PM_CTRL_ASPM_L0S_EN
;
1379 if (hw
->ctrl_flags
& ATL1C_ASPM_L1_SUPPORT
)
1380 pm_ctrl_data
|= PM_CTRL_ASPM_L1_EN
;
1381 if (hw
->ctrl_flags
& ATL1C_ASPM_L0S_SUPPORT
)
1382 pm_ctrl_data
|= PM_CTRL_ASPM_L0S_EN
;
1384 if (hw
->nic_type
== athr_l2c_b
|| hw
->nic_type
== athr_l1d
||
1385 hw
->nic_type
== athr_l2c_b2
|| hw
->nic_type
== athr_l1d_2
) {
1386 if (hw
->nic_type
== athr_l2c_b
)
1387 if (!(hw
->ctrl_flags
& ATL1C_APS_MODE_ENABLE
))
1388 pm_ctrl_data
&= ~PM_CTRL_ASPM_L0S_EN
;
1389 pm_ctrl_data
&= ~PM_CTRL_SERDES_L1_EN
;
1390 pm_ctrl_data
&= ~PM_CTRL_SERDES_PLL_L1_EN
;
1391 pm_ctrl_data
&= ~PM_CTRL_SERDES_BUDS_RX_L1_EN
;
1392 pm_ctrl_data
|= PM_CTRL_CLK_SWH_L1
;
1393 if (hw
->adapter
->link_speed
== SPEED_100
||
1394 hw
->adapter
->link_speed
== SPEED_1000
) {
1395 pm_ctrl_data
&= ~(PM_CTRL_L1_ENTRY_TIMER_MASK
<<
1396 PM_CTRL_L1_ENTRY_TIMER_SHIFT
);
1397 if (hw
->nic_type
== athr_l2c_b
)
1399 else if (hw
->nic_type
== athr_l2c_b2
||
1400 hw
->nic_type
== athr_l1d_2
)
1402 pm_ctrl_data
|= link_l1_timer
<<
1403 PM_CTRL_L1_ENTRY_TIMER_SHIFT
;
1406 pm_ctrl_data
|= PM_CTRL_SERDES_L1_EN
;
1407 pm_ctrl_data
|= PM_CTRL_SERDES_PLL_L1_EN
;
1408 pm_ctrl_data
|= PM_CTRL_SERDES_BUDS_RX_L1_EN
;
1409 pm_ctrl_data
&= ~PM_CTRL_CLK_SWH_L1
;
1410 pm_ctrl_data
&= ~PM_CTRL_ASPM_L0S_EN
;
1411 pm_ctrl_data
&= ~PM_CTRL_ASPM_L1_EN
;
1415 pm_ctrl_data
&= ~PM_CTRL_SERDES_L1_EN
;
1416 pm_ctrl_data
&= ~PM_CTRL_ASPM_L0S_EN
;
1417 pm_ctrl_data
&= ~PM_CTRL_SERDES_PLL_L1_EN
;
1418 pm_ctrl_data
|= PM_CTRL_CLK_SWH_L1
;
1420 if (hw
->ctrl_flags
& ATL1C_ASPM_L1_SUPPORT
)
1421 pm_ctrl_data
|= PM_CTRL_ASPM_L1_EN
;
1423 pm_ctrl_data
&= ~PM_CTRL_ASPM_L1_EN
;
1425 AT_WRITE_REG(hw
, REG_PM_CTRL
, pm_ctrl_data
);
1430 static void atl1c_setup_mac_ctrl(struct atl1c_adapter
*adapter
)
1432 struct atl1c_hw
*hw
= &adapter
->hw
;
1433 struct net_device
*netdev
= adapter
->netdev
;
1436 mac_ctrl_data
= MAC_CTRL_TX_EN
| MAC_CTRL_RX_EN
;
1437 mac_ctrl_data
|= (MAC_CTRL_TX_FLOW
| MAC_CTRL_RX_FLOW
);
1439 if (adapter
->link_duplex
== FULL_DUPLEX
) {
1440 hw
->mac_duplex
= true;
1441 mac_ctrl_data
|= MAC_CTRL_DUPLX
;
1444 if (adapter
->link_speed
== SPEED_1000
)
1445 hw
->mac_speed
= atl1c_mac_speed_1000
;
1447 hw
->mac_speed
= atl1c_mac_speed_10_100
;
1449 mac_ctrl_data
|= (hw
->mac_speed
& MAC_CTRL_SPEED_MASK
) <<
1450 MAC_CTRL_SPEED_SHIFT
;
1452 mac_ctrl_data
|= (MAC_CTRL_ADD_CRC
| MAC_CTRL_PAD
);
1453 mac_ctrl_data
|= ((hw
->preamble_len
& MAC_CTRL_PRMLEN_MASK
) <<
1454 MAC_CTRL_PRMLEN_SHIFT
);
1456 __atl1c_vlan_mode(netdev
->features
, &mac_ctrl_data
);
1458 mac_ctrl_data
|= MAC_CTRL_BC_EN
;
1459 if (netdev
->flags
& IFF_PROMISC
)
1460 mac_ctrl_data
|= MAC_CTRL_PROMIS_EN
;
1461 if (netdev
->flags
& IFF_ALLMULTI
)
1462 mac_ctrl_data
|= MAC_CTRL_MC_ALL_EN
;
1464 mac_ctrl_data
|= MAC_CTRL_SINGLE_PAUSE_EN
;
1465 if (hw
->nic_type
== athr_l1d
|| hw
->nic_type
== athr_l2c_b2
||
1466 hw
->nic_type
== athr_l1d_2
) {
1467 mac_ctrl_data
|= MAC_CTRL_SPEED_MODE_SW
;
1468 mac_ctrl_data
|= MAC_CTRL_HASH_ALG_CRC32
;
1470 AT_WRITE_REG(hw
, REG_MAC_CTRL
, mac_ctrl_data
);
1474 * atl1c_configure - Configure Transmit&Receive Unit after Reset
1475 * @adapter: board private structure
1477 * Configure the Tx /Rx unit of the MAC after a reset.
1479 static int atl1c_configure(struct atl1c_adapter
*adapter
)
1481 struct atl1c_hw
*hw
= &adapter
->hw
;
1482 u32 master_ctrl_data
= 0;
1483 u32 intr_modrt_data
;
1486 /* clear interrupt status */
1487 AT_WRITE_REG(hw
, REG_ISR
, 0xFFFFFFFF);
1488 /* Clear any WOL status */
1489 AT_WRITE_REG(hw
, REG_WOL_CTRL
, 0);
1490 /* set Interrupt Clear Timer
1491 * HW will enable self to assert interrupt event to system after
1492 * waiting x-time for software to notify it accept interrupt.
1495 data
= CLK_GATING_EN_ALL
;
1496 if (hw
->ctrl_flags
& ATL1C_CLK_GATING_EN
) {
1497 if (hw
->nic_type
== athr_l2c_b
)
1498 data
&= ~CLK_GATING_RXMAC_EN
;
1501 AT_WRITE_REG(hw
, REG_CLK_GATING_CTRL
, data
);
1503 AT_WRITE_REG(hw
, REG_INT_RETRIG_TIMER
,
1504 hw
->ict
& INT_RETRIG_TIMER_MASK
);
1506 atl1c_configure_des_ring(adapter
);
1508 if (hw
->ctrl_flags
& ATL1C_INTR_MODRT_ENABLE
) {
1509 intr_modrt_data
= (hw
->tx_imt
& IRQ_MODRT_TIMER_MASK
) <<
1510 IRQ_MODRT_TX_TIMER_SHIFT
;
1511 intr_modrt_data
|= (hw
->rx_imt
& IRQ_MODRT_TIMER_MASK
) <<
1512 IRQ_MODRT_RX_TIMER_SHIFT
;
1513 AT_WRITE_REG(hw
, REG_IRQ_MODRT_TIMER_INIT
, intr_modrt_data
);
1515 MASTER_CTRL_TX_ITIMER_EN
| MASTER_CTRL_RX_ITIMER_EN
;
1518 if (hw
->ctrl_flags
& ATL1C_INTR_CLEAR_ON_READ
)
1519 master_ctrl_data
|= MASTER_CTRL_INT_RDCLR
;
1521 master_ctrl_data
|= MASTER_CTRL_SA_TIMER_EN
;
1522 AT_WRITE_REG(hw
, REG_MASTER_CTRL
, master_ctrl_data
);
1524 if (hw
->ctrl_flags
& ATL1C_CMB_ENABLE
) {
1525 AT_WRITE_REG(hw
, REG_CMB_TPD_THRESH
,
1526 hw
->cmb_tpd
& CMB_TPD_THRESH_MASK
);
1527 AT_WRITE_REG(hw
, REG_CMB_TX_TIMER
,
1528 hw
->cmb_tx_timer
& CMB_TX_TIMER_MASK
);
1531 if (hw
->ctrl_flags
& ATL1C_SMB_ENABLE
)
1532 AT_WRITE_REG(hw
, REG_SMB_STAT_TIMER
,
1533 hw
->smb_timer
& SMB_STAT_TIMER_MASK
);
1535 AT_WRITE_REG(hw
, REG_MTU
, hw
->max_frame_size
+ ETH_HLEN
+
1536 VLAN_HLEN
+ ETH_FCS_LEN
);
1538 AT_WRITE_REG(hw
, REG_HDS_CTRL
, 0);
1540 atl1c_configure_tx(adapter
);
1541 atl1c_configure_rx(adapter
);
1542 atl1c_configure_rss(adapter
);
1543 atl1c_configure_dma(adapter
);
1548 static void atl1c_update_hw_stats(struct atl1c_adapter
*adapter
)
1550 u16 hw_reg_addr
= 0;
1551 unsigned long *stats_item
= NULL
;
1554 /* update rx status */
1555 hw_reg_addr
= REG_MAC_RX_STATUS_BIN
;
1556 stats_item
= &adapter
->hw_stats
.rx_ok
;
1557 while (hw_reg_addr
<= REG_MAC_RX_STATUS_END
) {
1558 AT_READ_REG(&adapter
->hw
, hw_reg_addr
, &data
);
1559 *stats_item
+= data
;
1563 /* update tx status */
1564 hw_reg_addr
= REG_MAC_TX_STATUS_BIN
;
1565 stats_item
= &adapter
->hw_stats
.tx_ok
;
1566 while (hw_reg_addr
<= REG_MAC_TX_STATUS_END
) {
1567 AT_READ_REG(&adapter
->hw
, hw_reg_addr
, &data
);
1568 *stats_item
+= data
;
1575 * atl1c_get_stats - Get System Network Statistics
1576 * @netdev: network interface device structure
1578 * Returns the address of the device statistics structure.
1579 * The statistics are actually updated from the timer callback.
1581 static struct net_device_stats
*atl1c_get_stats(struct net_device
*netdev
)
1583 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
1584 struct atl1c_hw_stats
*hw_stats
= &adapter
->hw_stats
;
1585 struct net_device_stats
*net_stats
= &netdev
->stats
;
1587 atl1c_update_hw_stats(adapter
);
1588 net_stats
->rx_packets
= hw_stats
->rx_ok
;
1589 net_stats
->tx_packets
= hw_stats
->tx_ok
;
1590 net_stats
->rx_bytes
= hw_stats
->rx_byte_cnt
;
1591 net_stats
->tx_bytes
= hw_stats
->tx_byte_cnt
;
1592 net_stats
->multicast
= hw_stats
->rx_mcast
;
1593 net_stats
->collisions
= hw_stats
->tx_1_col
+
1594 hw_stats
->tx_2_col
* 2 +
1595 hw_stats
->tx_late_col
+ hw_stats
->tx_abort_col
;
1596 net_stats
->rx_errors
= hw_stats
->rx_frag
+ hw_stats
->rx_fcs_err
+
1597 hw_stats
->rx_len_err
+ hw_stats
->rx_sz_ov
+
1598 hw_stats
->rx_rrd_ov
+ hw_stats
->rx_align_err
;
1599 net_stats
->rx_fifo_errors
= hw_stats
->rx_rxf_ov
;
1600 net_stats
->rx_length_errors
= hw_stats
->rx_len_err
;
1601 net_stats
->rx_crc_errors
= hw_stats
->rx_fcs_err
;
1602 net_stats
->rx_frame_errors
= hw_stats
->rx_align_err
;
1603 net_stats
->rx_over_errors
= hw_stats
->rx_rrd_ov
+ hw_stats
->rx_rxf_ov
;
1605 net_stats
->rx_missed_errors
= hw_stats
->rx_rrd_ov
+ hw_stats
->rx_rxf_ov
;
1607 net_stats
->tx_errors
= hw_stats
->tx_late_col
+ hw_stats
->tx_abort_col
+
1608 hw_stats
->tx_underrun
+ hw_stats
->tx_trunc
;
1609 net_stats
->tx_fifo_errors
= hw_stats
->tx_underrun
;
1610 net_stats
->tx_aborted_errors
= hw_stats
->tx_abort_col
;
1611 net_stats
->tx_window_errors
= hw_stats
->tx_late_col
;
1616 static inline void atl1c_clear_phy_int(struct atl1c_adapter
*adapter
)
1620 spin_lock(&adapter
->mdio_lock
);
1621 atl1c_read_phy_reg(&adapter
->hw
, MII_ISR
, &phy_data
);
1622 spin_unlock(&adapter
->mdio_lock
);
1625 static bool atl1c_clean_tx_irq(struct atl1c_adapter
*adapter
,
1626 enum atl1c_trans_queue type
)
1628 struct atl1c_tpd_ring
*tpd_ring
= (struct atl1c_tpd_ring
*)
1629 &adapter
->tpd_ring
[type
];
1630 struct atl1c_buffer
*buffer_info
;
1631 struct pci_dev
*pdev
= adapter
->pdev
;
1632 u16 next_to_clean
= atomic_read(&tpd_ring
->next_to_clean
);
1633 u16 hw_next_to_clean
;
1637 if (type
== atl1c_trans_high
)
1638 shift
= MB_HTPD_CONS_IDX_SHIFT
;
1640 shift
= MB_NTPD_CONS_IDX_SHIFT
;
1642 AT_READ_REG(&adapter
->hw
, REG_MB_PRIO_CONS_IDX
, &data
);
1643 hw_next_to_clean
= (data
>> shift
) & MB_PRIO_PROD_IDX_MASK
;
1645 while (next_to_clean
!= hw_next_to_clean
) {
1646 buffer_info
= &tpd_ring
->buffer_info
[next_to_clean
];
1647 atl1c_clean_buffer(pdev
, buffer_info
, 1);
1648 if (++next_to_clean
== tpd_ring
->count
)
1650 atomic_set(&tpd_ring
->next_to_clean
, next_to_clean
);
1653 if (netif_queue_stopped(adapter
->netdev
) &&
1654 netif_carrier_ok(adapter
->netdev
)) {
1655 netif_wake_queue(adapter
->netdev
);
1662 * atl1c_intr - Interrupt Handler
1663 * @irq: interrupt number
1664 * @data: pointer to a network interface device structure
1665 * @pt_regs: CPU registers structure
1667 static irqreturn_t
atl1c_intr(int irq
, void *data
)
1669 struct net_device
*netdev
= data
;
1670 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
1671 struct pci_dev
*pdev
= adapter
->pdev
;
1672 struct atl1c_hw
*hw
= &adapter
->hw
;
1673 int max_ints
= AT_MAX_INT_WORK
;
1674 int handled
= IRQ_NONE
;
1679 AT_READ_REG(hw
, REG_ISR
, ®_data
);
1680 status
= reg_data
& hw
->intr_mask
;
1682 if (status
== 0 || (status
& ISR_DIS_INT
) != 0) {
1683 if (max_ints
!= AT_MAX_INT_WORK
)
1684 handled
= IRQ_HANDLED
;
1688 if (status
& ISR_GPHY
)
1689 atl1c_clear_phy_int(adapter
);
1691 AT_WRITE_REG(hw
, REG_ISR
, status
| ISR_DIS_INT
);
1692 if (status
& ISR_RX_PKT
) {
1693 if (likely(napi_schedule_prep(&adapter
->napi
))) {
1694 hw
->intr_mask
&= ~ISR_RX_PKT
;
1695 AT_WRITE_REG(hw
, REG_IMR
, hw
->intr_mask
);
1696 __napi_schedule(&adapter
->napi
);
1699 if (status
& ISR_TX_PKT
)
1700 atl1c_clean_tx_irq(adapter
, atl1c_trans_normal
);
1702 handled
= IRQ_HANDLED
;
1703 /* check if PCIE PHY Link down */
1704 if (status
& ISR_ERROR
) {
1705 if (netif_msg_hw(adapter
))
1707 "atl1c hardware error (status = 0x%x)\n",
1708 status
& ISR_ERROR
);
1710 adapter
->work_event
|= ATL1C_WORK_EVENT_RESET
;
1711 schedule_work(&adapter
->common_task
);
1715 if (status
& ISR_OVER
)
1716 if (netif_msg_intr(adapter
))
1717 dev_warn(&pdev
->dev
,
1718 "TX/RX overflow (status = 0x%x)\n",
1722 if (status
& (ISR_GPHY
| ISR_MANUAL
)) {
1723 netdev
->stats
.tx_carrier_errors
++;
1724 atl1c_link_chg_event(adapter
);
1728 } while (--max_ints
> 0);
1729 /* re-enable Interrupt*/
1730 AT_WRITE_REG(&adapter
->hw
, REG_ISR
, 0);
1734 static inline void atl1c_rx_checksum(struct atl1c_adapter
*adapter
,
1735 struct sk_buff
*skb
, struct atl1c_recv_ret_status
*prrs
)
1738 * The pid field in RRS in not correct sometimes, so we
1739 * cannot figure out if the packet is fragmented or not,
1740 * so we tell the KERNEL CHECKSUM_NONE
1742 skb_checksum_none_assert(skb
);
1745 static int atl1c_alloc_rx_buffer(struct atl1c_adapter
*adapter
, const int ringid
)
1747 struct atl1c_rfd_ring
*rfd_ring
= &adapter
->rfd_ring
[ringid
];
1748 struct pci_dev
*pdev
= adapter
->pdev
;
1749 struct atl1c_buffer
*buffer_info
, *next_info
;
1750 struct sk_buff
*skb
;
1751 void *vir_addr
= NULL
;
1753 u16 rfd_next_to_use
, next_next
;
1754 struct atl1c_rx_free_desc
*rfd_desc
;
1756 next_next
= rfd_next_to_use
= rfd_ring
->next_to_use
;
1757 if (++next_next
== rfd_ring
->count
)
1759 buffer_info
= &rfd_ring
->buffer_info
[rfd_next_to_use
];
1760 next_info
= &rfd_ring
->buffer_info
[next_next
];
1762 while (next_info
->flags
& ATL1C_BUFFER_FREE
) {
1763 rfd_desc
= ATL1C_RFD_DESC(rfd_ring
, rfd_next_to_use
);
1765 skb
= dev_alloc_skb(adapter
->rx_buffer_len
);
1766 if (unlikely(!skb
)) {
1767 if (netif_msg_rx_err(adapter
))
1768 dev_warn(&pdev
->dev
, "alloc rx buffer failed\n");
1773 * Make buffer alignment 2 beyond a 16 byte boundary
1774 * this will result in a 16 byte aligned IP header after
1775 * the 14 byte MAC header is removed
1777 vir_addr
= skb
->data
;
1778 ATL1C_SET_BUFFER_STATE(buffer_info
, ATL1C_BUFFER_BUSY
);
1779 buffer_info
->skb
= skb
;
1780 buffer_info
->length
= adapter
->rx_buffer_len
;
1781 buffer_info
->dma
= pci_map_single(pdev
, vir_addr
,
1782 buffer_info
->length
,
1783 PCI_DMA_FROMDEVICE
);
1784 ATL1C_SET_PCIMAP_TYPE(buffer_info
, ATL1C_PCIMAP_SINGLE
,
1785 ATL1C_PCIMAP_FROMDEVICE
);
1786 rfd_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
1787 rfd_next_to_use
= next_next
;
1788 if (++next_next
== rfd_ring
->count
)
1790 buffer_info
= &rfd_ring
->buffer_info
[rfd_next_to_use
];
1791 next_info
= &rfd_ring
->buffer_info
[next_next
];
1796 /* TODO: update mailbox here */
1798 rfd_ring
->next_to_use
= rfd_next_to_use
;
1799 AT_WRITE_REG(&adapter
->hw
, atl1c_rfd_prod_idx_regs
[ringid
],
1800 rfd_ring
->next_to_use
& MB_RFDX_PROD_IDX_MASK
);
1806 static void atl1c_clean_rrd(struct atl1c_rrd_ring
*rrd_ring
,
1807 struct atl1c_recv_ret_status
*rrs
, u16 num
)
1810 /* the relationship between rrd and rfd is one map one */
1811 for (i
= 0; i
< num
; i
++, rrs
= ATL1C_RRD_DESC(rrd_ring
,
1812 rrd_ring
->next_to_clean
)) {
1813 rrs
->word3
&= ~RRS_RXD_UPDATED
;
1814 if (++rrd_ring
->next_to_clean
== rrd_ring
->count
)
1815 rrd_ring
->next_to_clean
= 0;
1819 static void atl1c_clean_rfd(struct atl1c_rfd_ring
*rfd_ring
,
1820 struct atl1c_recv_ret_status
*rrs
, u16 num
)
1824 struct atl1c_buffer
*buffer_info
= rfd_ring
->buffer_info
;
1826 rfd_index
= (rrs
->word0
>> RRS_RX_RFD_INDEX_SHIFT
) &
1827 RRS_RX_RFD_INDEX_MASK
;
1828 for (i
= 0; i
< num
; i
++) {
1829 buffer_info
[rfd_index
].skb
= NULL
;
1830 ATL1C_SET_BUFFER_STATE(&buffer_info
[rfd_index
],
1832 if (++rfd_index
== rfd_ring
->count
)
1835 rfd_ring
->next_to_clean
= rfd_index
;
1838 static void atl1c_clean_rx_irq(struct atl1c_adapter
*adapter
, u8 que
,
1839 int *work_done
, int work_to_do
)
1841 u16 rfd_num
, rfd_index
;
1844 struct pci_dev
*pdev
= adapter
->pdev
;
1845 struct net_device
*netdev
= adapter
->netdev
;
1846 struct atl1c_rfd_ring
*rfd_ring
= &adapter
->rfd_ring
[que
];
1847 struct atl1c_rrd_ring
*rrd_ring
= &adapter
->rrd_ring
[que
];
1848 struct sk_buff
*skb
;
1849 struct atl1c_recv_ret_status
*rrs
;
1850 struct atl1c_buffer
*buffer_info
;
1853 if (*work_done
>= work_to_do
)
1855 rrs
= ATL1C_RRD_DESC(rrd_ring
, rrd_ring
->next_to_clean
);
1856 if (likely(RRS_RXD_IS_VALID(rrs
->word3
))) {
1857 rfd_num
= (rrs
->word0
>> RRS_RX_RFD_CNT_SHIFT
) &
1858 RRS_RX_RFD_CNT_MASK
;
1859 if (unlikely(rfd_num
!= 1))
1860 /* TODO support mul rfd*/
1861 if (netif_msg_rx_err(adapter
))
1862 dev_warn(&pdev
->dev
,
1863 "Multi rfd not support yet!\n");
1869 atl1c_clean_rrd(rrd_ring
, rrs
, rfd_num
);
1870 if (rrs
->word3
& (RRS_RX_ERR_SUM
| RRS_802_3_LEN_ERR
)) {
1871 atl1c_clean_rfd(rfd_ring
, rrs
, rfd_num
);
1872 if (netif_msg_rx_err(adapter
))
1873 dev_warn(&pdev
->dev
,
1874 "wrong packet! rrs word3 is %x\n",
1879 length
= le16_to_cpu((rrs
->word3
>> RRS_PKT_SIZE_SHIFT
) &
1882 if (likely(rfd_num
== 1)) {
1883 rfd_index
= (rrs
->word0
>> RRS_RX_RFD_INDEX_SHIFT
) &
1884 RRS_RX_RFD_INDEX_MASK
;
1885 buffer_info
= &rfd_ring
->buffer_info
[rfd_index
];
1886 pci_unmap_single(pdev
, buffer_info
->dma
,
1887 buffer_info
->length
, PCI_DMA_FROMDEVICE
);
1888 skb
= buffer_info
->skb
;
1891 if (netif_msg_rx_err(adapter
))
1892 dev_warn(&pdev
->dev
,
1893 "Multi rfd not support yet!\n");
1896 atl1c_clean_rfd(rfd_ring
, rrs
, rfd_num
);
1897 skb_put(skb
, length
- ETH_FCS_LEN
);
1898 skb
->protocol
= eth_type_trans(skb
, netdev
);
1899 atl1c_rx_checksum(adapter
, skb
, rrs
);
1900 if (rrs
->word3
& RRS_VLAN_INS
) {
1903 AT_TAG_TO_VLAN(rrs
->vlan_tag
, vlan
);
1904 vlan
= le16_to_cpu(vlan
);
1905 __vlan_hwaccel_put_tag(skb
, vlan
);
1907 netif_receive_skb(skb
);
1913 atl1c_alloc_rx_buffer(adapter
, que
);
1917 * atl1c_clean - NAPI Rx polling callback
1918 * @adapter: board private structure
1920 static int atl1c_clean(struct napi_struct
*napi
, int budget
)
1922 struct atl1c_adapter
*adapter
=
1923 container_of(napi
, struct atl1c_adapter
, napi
);
1926 /* Keep link state information with original netdev */
1927 if (!netif_carrier_ok(adapter
->netdev
))
1929 /* just enable one RXQ */
1930 atl1c_clean_rx_irq(adapter
, 0, &work_done
, budget
);
1932 if (work_done
< budget
) {
1934 napi_complete(napi
);
1935 adapter
->hw
.intr_mask
|= ISR_RX_PKT
;
1936 AT_WRITE_REG(&adapter
->hw
, REG_IMR
, adapter
->hw
.intr_mask
);
1941 #ifdef CONFIG_NET_POLL_CONTROLLER
1944 * Polling 'interrupt' - used by things like netconsole to send skbs
1945 * without having to re-enable interrupts. It's not called while
1946 * the interrupt routine is executing.
1948 static void atl1c_netpoll(struct net_device
*netdev
)
1950 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
1952 disable_irq(adapter
->pdev
->irq
);
1953 atl1c_intr(adapter
->pdev
->irq
, netdev
);
1954 enable_irq(adapter
->pdev
->irq
);
1958 static inline u16
atl1c_tpd_avail(struct atl1c_adapter
*adapter
, enum atl1c_trans_queue type
)
1960 struct atl1c_tpd_ring
*tpd_ring
= &adapter
->tpd_ring
[type
];
1961 u16 next_to_use
= 0;
1962 u16 next_to_clean
= 0;
1964 next_to_clean
= atomic_read(&tpd_ring
->next_to_clean
);
1965 next_to_use
= tpd_ring
->next_to_use
;
1967 return (u16
)(next_to_clean
> next_to_use
) ?
1968 (next_to_clean
- next_to_use
- 1) :
1969 (tpd_ring
->count
+ next_to_clean
- next_to_use
- 1);
1973 * get next usable tpd
1974 * Note: should call atl1c_tdp_avail to make sure
1975 * there is enough tpd to use
1977 static struct atl1c_tpd_desc
*atl1c_get_tpd(struct atl1c_adapter
*adapter
,
1978 enum atl1c_trans_queue type
)
1980 struct atl1c_tpd_ring
*tpd_ring
= &adapter
->tpd_ring
[type
];
1981 struct atl1c_tpd_desc
*tpd_desc
;
1982 u16 next_to_use
= 0;
1984 next_to_use
= tpd_ring
->next_to_use
;
1985 if (++tpd_ring
->next_to_use
== tpd_ring
->count
)
1986 tpd_ring
->next_to_use
= 0;
1987 tpd_desc
= ATL1C_TPD_DESC(tpd_ring
, next_to_use
);
1988 memset(tpd_desc
, 0, sizeof(struct atl1c_tpd_desc
));
1992 static struct atl1c_buffer
*
1993 atl1c_get_tx_buffer(struct atl1c_adapter
*adapter
, struct atl1c_tpd_desc
*tpd
)
1995 struct atl1c_tpd_ring
*tpd_ring
= adapter
->tpd_ring
;
1997 return &tpd_ring
->buffer_info
[tpd
-
1998 (struct atl1c_tpd_desc
*)tpd_ring
->desc
];
2001 /* Calculate the transmit packet descript needed*/
2002 static u16
atl1c_cal_tpd_req(const struct sk_buff
*skb
)
2005 u16 proto_hdr_len
= 0;
2007 tpd_req
= skb_shinfo(skb
)->nr_frags
+ 1;
2009 if (skb_is_gso(skb
)) {
2010 proto_hdr_len
= skb_transport_offset(skb
) + tcp_hdrlen(skb
);
2011 if (proto_hdr_len
< skb_headlen(skb
))
2013 if (skb_shinfo(skb
)->gso_type
& SKB_GSO_TCPV6
)
2019 static int atl1c_tso_csum(struct atl1c_adapter
*adapter
,
2020 struct sk_buff
*skb
,
2021 struct atl1c_tpd_desc
**tpd
,
2022 enum atl1c_trans_queue type
)
2024 struct pci_dev
*pdev
= adapter
->pdev
;
2027 unsigned short offload_type
;
2030 if (skb_is_gso(skb
)) {
2031 if (skb_header_cloned(skb
)) {
2032 err
= pskb_expand_head(skb
, 0, 0, GFP_ATOMIC
);
2036 offload_type
= skb_shinfo(skb
)->gso_type
;
2038 if (offload_type
& SKB_GSO_TCPV4
) {
2039 real_len
= (((unsigned char *)ip_hdr(skb
) - skb
->data
)
2040 + ntohs(ip_hdr(skb
)->tot_len
));
2042 if (real_len
< skb
->len
)
2043 pskb_trim(skb
, real_len
);
2045 hdr_len
= (skb_transport_offset(skb
) + tcp_hdrlen(skb
));
2046 if (unlikely(skb
->len
== hdr_len
)) {
2047 /* only xsum need */
2048 if (netif_msg_tx_queued(adapter
))
2049 dev_warn(&pdev
->dev
,
2050 "IPV4 tso with zero data??\n");
2053 ip_hdr(skb
)->check
= 0;
2054 tcp_hdr(skb
)->check
= ~csum_tcpudp_magic(
2058 (*tpd
)->word1
|= 1 << TPD_IPV4_PACKET_SHIFT
;
2062 if (offload_type
& SKB_GSO_TCPV6
) {
2063 struct atl1c_tpd_ext_desc
*etpd
=
2064 *(struct atl1c_tpd_ext_desc
**)(tpd
);
2066 memset(etpd
, 0, sizeof(struct atl1c_tpd_ext_desc
));
2067 *tpd
= atl1c_get_tpd(adapter
, type
);
2068 ipv6_hdr(skb
)->payload_len
= 0;
2069 /* check payload == 0 byte ? */
2070 hdr_len
= (skb_transport_offset(skb
) + tcp_hdrlen(skb
));
2071 if (unlikely(skb
->len
== hdr_len
)) {
2072 /* only xsum need */
2073 if (netif_msg_tx_queued(adapter
))
2074 dev_warn(&pdev
->dev
,
2075 "IPV6 tso with zero data??\n");
2078 tcp_hdr(skb
)->check
= ~csum_ipv6_magic(
2079 &ipv6_hdr(skb
)->saddr
,
2080 &ipv6_hdr(skb
)->daddr
,
2082 etpd
->word1
|= 1 << TPD_LSO_EN_SHIFT
;
2083 etpd
->word1
|= 1 << TPD_LSO_VER_SHIFT
;
2084 etpd
->pkt_len
= cpu_to_le32(skb
->len
);
2085 (*tpd
)->word1
|= 1 << TPD_LSO_VER_SHIFT
;
2088 (*tpd
)->word1
|= 1 << TPD_LSO_EN_SHIFT
;
2089 (*tpd
)->word1
|= (skb_transport_offset(skb
) & TPD_TCPHDR_OFFSET_MASK
) <<
2090 TPD_TCPHDR_OFFSET_SHIFT
;
2091 (*tpd
)->word1
|= (skb_shinfo(skb
)->gso_size
& TPD_MSS_MASK
) <<
2097 if (likely(skb
->ip_summed
== CHECKSUM_PARTIAL
)) {
2099 cso
= skb_checksum_start_offset(skb
);
2101 if (unlikely(cso
& 0x1)) {
2102 if (netif_msg_tx_err(adapter
))
2103 dev_err(&adapter
->pdev
->dev
,
2104 "payload offset should not an event number\n");
2107 css
= cso
+ skb
->csum_offset
;
2109 (*tpd
)->word1
|= ((cso
>> 1) & TPD_PLOADOFFSET_MASK
) <<
2110 TPD_PLOADOFFSET_SHIFT
;
2111 (*tpd
)->word1
|= ((css
>> 1) & TPD_CCSUM_OFFSET_MASK
) <<
2112 TPD_CCSUM_OFFSET_SHIFT
;
2113 (*tpd
)->word1
|= 1 << TPD_CCSUM_EN_SHIFT
;
2119 static void atl1c_tx_map(struct atl1c_adapter
*adapter
,
2120 struct sk_buff
*skb
, struct atl1c_tpd_desc
*tpd
,
2121 enum atl1c_trans_queue type
)
2123 struct atl1c_tpd_desc
*use_tpd
= NULL
;
2124 struct atl1c_buffer
*buffer_info
= NULL
;
2125 u16 buf_len
= skb_headlen(skb
);
2133 nr_frags
= skb_shinfo(skb
)->nr_frags
;
2134 tso
= (tpd
->word1
>> TPD_LSO_EN_SHIFT
) & TPD_LSO_EN_MASK
;
2137 map_len
= hdr_len
= skb_transport_offset(skb
) + tcp_hdrlen(skb
);
2140 buffer_info
= atl1c_get_tx_buffer(adapter
, use_tpd
);
2141 buffer_info
->length
= map_len
;
2142 buffer_info
->dma
= pci_map_single(adapter
->pdev
,
2143 skb
->data
, hdr_len
, PCI_DMA_TODEVICE
);
2144 ATL1C_SET_BUFFER_STATE(buffer_info
, ATL1C_BUFFER_BUSY
);
2145 ATL1C_SET_PCIMAP_TYPE(buffer_info
, ATL1C_PCIMAP_SINGLE
,
2146 ATL1C_PCIMAP_TODEVICE
);
2147 mapped_len
+= map_len
;
2148 use_tpd
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
2149 use_tpd
->buffer_len
= cpu_to_le16(buffer_info
->length
);
2152 if (mapped_len
< buf_len
) {
2153 /* mapped_len == 0, means we should use the first tpd,
2154 which is given by caller */
2155 if (mapped_len
== 0)
2158 use_tpd
= atl1c_get_tpd(adapter
, type
);
2159 memcpy(use_tpd
, tpd
, sizeof(struct atl1c_tpd_desc
));
2161 buffer_info
= atl1c_get_tx_buffer(adapter
, use_tpd
);
2162 buffer_info
->length
= buf_len
- mapped_len
;
2164 pci_map_single(adapter
->pdev
, skb
->data
+ mapped_len
,
2165 buffer_info
->length
, PCI_DMA_TODEVICE
);
2166 ATL1C_SET_BUFFER_STATE(buffer_info
, ATL1C_BUFFER_BUSY
);
2167 ATL1C_SET_PCIMAP_TYPE(buffer_info
, ATL1C_PCIMAP_SINGLE
,
2168 ATL1C_PCIMAP_TODEVICE
);
2169 use_tpd
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
2170 use_tpd
->buffer_len
= cpu_to_le16(buffer_info
->length
);
2173 for (f
= 0; f
< nr_frags
; f
++) {
2174 struct skb_frag_struct
*frag
;
2176 frag
= &skb_shinfo(skb
)->frags
[f
];
2178 use_tpd
= atl1c_get_tpd(adapter
, type
);
2179 memcpy(use_tpd
, tpd
, sizeof(struct atl1c_tpd_desc
));
2181 buffer_info
= atl1c_get_tx_buffer(adapter
, use_tpd
);
2182 buffer_info
->length
= frag
->size
;
2183 buffer_info
->dma
= skb_frag_dma_map(&adapter
->pdev
->dev
,
2185 buffer_info
->length
,
2187 ATL1C_SET_BUFFER_STATE(buffer_info
, ATL1C_BUFFER_BUSY
);
2188 ATL1C_SET_PCIMAP_TYPE(buffer_info
, ATL1C_PCIMAP_PAGE
,
2189 ATL1C_PCIMAP_TODEVICE
);
2190 use_tpd
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
2191 use_tpd
->buffer_len
= cpu_to_le16(buffer_info
->length
);
2195 use_tpd
->word1
|= 1 << TPD_EOP_SHIFT
;
2196 /* The last buffer info contain the skb address,
2197 so it will be free after unmap */
2198 buffer_info
->skb
= skb
;
2201 static void atl1c_tx_queue(struct atl1c_adapter
*adapter
, struct sk_buff
*skb
,
2202 struct atl1c_tpd_desc
*tpd
, enum atl1c_trans_queue type
)
2204 struct atl1c_tpd_ring
*tpd_ring
= &adapter
->tpd_ring
[type
];
2207 AT_READ_REG(&adapter
->hw
, REG_MB_PRIO_PROD_IDX
, &prod_data
);
2209 case atl1c_trans_high
:
2210 prod_data
&= 0xFFFF0000;
2211 prod_data
|= tpd_ring
->next_to_use
& 0xFFFF;
2213 case atl1c_trans_normal
:
2214 prod_data
&= 0x0000FFFF;
2215 prod_data
|= (tpd_ring
->next_to_use
& 0xFFFF) << 16;
2221 AT_WRITE_REG(&adapter
->hw
, REG_MB_PRIO_PROD_IDX
, prod_data
);
2224 static netdev_tx_t
atl1c_xmit_frame(struct sk_buff
*skb
,
2225 struct net_device
*netdev
)
2227 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
2228 unsigned long flags
;
2230 struct atl1c_tpd_desc
*tpd
;
2231 enum atl1c_trans_queue type
= atl1c_trans_normal
;
2233 if (test_bit(__AT_DOWN
, &adapter
->flags
)) {
2234 dev_kfree_skb_any(skb
);
2235 return NETDEV_TX_OK
;
2238 tpd_req
= atl1c_cal_tpd_req(skb
);
2239 if (!spin_trylock_irqsave(&adapter
->tx_lock
, flags
)) {
2240 if (netif_msg_pktdata(adapter
))
2241 dev_info(&adapter
->pdev
->dev
, "tx locked\n");
2242 return NETDEV_TX_LOCKED
;
2244 if (skb
->mark
== 0x01)
2245 type
= atl1c_trans_high
;
2247 type
= atl1c_trans_normal
;
2249 if (atl1c_tpd_avail(adapter
, type
) < tpd_req
) {
2250 /* no enough descriptor, just stop queue */
2251 netif_stop_queue(netdev
);
2252 spin_unlock_irqrestore(&adapter
->tx_lock
, flags
);
2253 return NETDEV_TX_BUSY
;
2256 tpd
= atl1c_get_tpd(adapter
, type
);
2258 /* do TSO and check sum */
2259 if (atl1c_tso_csum(adapter
, skb
, &tpd
, type
) != 0) {
2260 spin_unlock_irqrestore(&adapter
->tx_lock
, flags
);
2261 dev_kfree_skb_any(skb
);
2262 return NETDEV_TX_OK
;
2265 if (unlikely(vlan_tx_tag_present(skb
))) {
2266 u16 vlan
= vlan_tx_tag_get(skb
);
2269 vlan
= cpu_to_le16(vlan
);
2270 AT_VLAN_TO_TAG(vlan
, tag
);
2271 tpd
->word1
|= 1 << TPD_INS_VTAG_SHIFT
;
2272 tpd
->vlan_tag
= tag
;
2275 if (skb_network_offset(skb
) != ETH_HLEN
)
2276 tpd
->word1
|= 1 << TPD_ETH_TYPE_SHIFT
; /* Ethernet frame */
2278 atl1c_tx_map(adapter
, skb
, tpd
, type
);
2279 atl1c_tx_queue(adapter
, skb
, tpd
, type
);
2281 spin_unlock_irqrestore(&adapter
->tx_lock
, flags
);
2282 return NETDEV_TX_OK
;
2285 static void atl1c_free_irq(struct atl1c_adapter
*adapter
)
2287 struct net_device
*netdev
= adapter
->netdev
;
2289 free_irq(adapter
->pdev
->irq
, netdev
);
2291 if (adapter
->have_msi
)
2292 pci_disable_msi(adapter
->pdev
);
2295 static int atl1c_request_irq(struct atl1c_adapter
*adapter
)
2297 struct pci_dev
*pdev
= adapter
->pdev
;
2298 struct net_device
*netdev
= adapter
->netdev
;
2302 adapter
->have_msi
= true;
2303 err
= pci_enable_msi(adapter
->pdev
);
2305 if (netif_msg_ifup(adapter
))
2307 "Unable to allocate MSI interrupt Error: %d\n",
2309 adapter
->have_msi
= false;
2311 netdev
->irq
= pdev
->irq
;
2313 if (!adapter
->have_msi
)
2314 flags
|= IRQF_SHARED
;
2315 err
= request_irq(adapter
->pdev
->irq
, atl1c_intr
, flags
,
2316 netdev
->name
, netdev
);
2318 if (netif_msg_ifup(adapter
))
2320 "Unable to allocate interrupt Error: %d\n",
2322 if (adapter
->have_msi
)
2323 pci_disable_msi(adapter
->pdev
);
2326 if (netif_msg_ifup(adapter
))
2327 dev_dbg(&pdev
->dev
, "atl1c_request_irq OK\n");
2331 static int atl1c_up(struct atl1c_adapter
*adapter
)
2333 struct net_device
*netdev
= adapter
->netdev
;
2338 netif_carrier_off(netdev
);
2339 atl1c_init_ring_ptrs(adapter
);
2340 atl1c_set_multi(netdev
);
2341 atl1c_restore_vlan(adapter
);
2343 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
2344 num
= atl1c_alloc_rx_buffer(adapter
, i
);
2345 if (unlikely(num
== 0)) {
2351 if (atl1c_configure(adapter
)) {
2356 err
= atl1c_request_irq(adapter
);
2360 clear_bit(__AT_DOWN
, &adapter
->flags
);
2361 napi_enable(&adapter
->napi
);
2362 atl1c_irq_enable(adapter
);
2363 atl1c_check_link_status(adapter
);
2364 netif_start_queue(netdev
);
2369 atl1c_clean_rx_ring(adapter
);
2373 static void atl1c_down(struct atl1c_adapter
*adapter
)
2375 struct net_device
*netdev
= adapter
->netdev
;
2377 atl1c_del_timer(adapter
);
2378 adapter
->work_event
= 0; /* clear all event */
2379 /* signal that we're down so the interrupt handler does not
2380 * reschedule our watchdog timer */
2381 set_bit(__AT_DOWN
, &adapter
->flags
);
2382 netif_carrier_off(netdev
);
2383 napi_disable(&adapter
->napi
);
2384 atl1c_irq_disable(adapter
);
2385 atl1c_free_irq(adapter
);
2386 /* reset MAC to disable all RX/TX */
2387 atl1c_reset_mac(&adapter
->hw
);
2390 adapter
->link_speed
= SPEED_0
;
2391 adapter
->link_duplex
= -1;
2392 atl1c_clean_tx_ring(adapter
, atl1c_trans_normal
);
2393 atl1c_clean_tx_ring(adapter
, atl1c_trans_high
);
2394 atl1c_clean_rx_ring(adapter
);
2398 * atl1c_open - Called when a network interface is made active
2399 * @netdev: network interface device structure
2401 * Returns 0 on success, negative value on failure
2403 * The open entry point is called when a network interface is made
2404 * active by the system (IFF_UP). At this point all resources needed
2405 * for transmit and receive operations are allocated, the interrupt
2406 * handler is registered with the OS, the watchdog timer is started,
2407 * and the stack is notified that the interface is ready.
2409 static int atl1c_open(struct net_device
*netdev
)
2411 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
2414 /* disallow open during test */
2415 if (test_bit(__AT_TESTING
, &adapter
->flags
))
2418 /* allocate rx/tx dma buffer & descriptors */
2419 err
= atl1c_setup_ring_resources(adapter
);
2423 err
= atl1c_up(adapter
);
2427 if (adapter
->hw
.ctrl_flags
& ATL1C_FPGA_VERSION
) {
2430 AT_READ_REG(&adapter
->hw
, REG_MDIO_CTRL
, &phy_data
);
2431 phy_data
|= MDIO_AP_EN
;
2432 AT_WRITE_REG(&adapter
->hw
, REG_MDIO_CTRL
, phy_data
);
2437 atl1c_free_irq(adapter
);
2438 atl1c_free_ring_resources(adapter
);
2439 atl1c_reset_mac(&adapter
->hw
);
2444 * atl1c_close - Disables a network interface
2445 * @netdev: network interface device structure
2447 * Returns 0, this is not allowed to fail
2449 * The close entry point is called when an interface is de-activated
2450 * by the OS. The hardware is still under the drivers control, but
2451 * needs to be disabled. A global MAC reset is issued to stop the
2452 * hardware, and all transmit and receive resources are freed.
2454 static int atl1c_close(struct net_device
*netdev
)
2456 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
2458 WARN_ON(test_bit(__AT_RESETTING
, &adapter
->flags
));
2459 atl1c_down(adapter
);
2460 atl1c_free_ring_resources(adapter
);
2464 static int atl1c_suspend(struct device
*dev
)
2466 struct pci_dev
*pdev
= to_pci_dev(dev
);
2467 struct net_device
*netdev
= pci_get_drvdata(pdev
);
2468 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
2469 struct atl1c_hw
*hw
= &adapter
->hw
;
2470 u32 mac_ctrl_data
= 0;
2471 u32 master_ctrl_data
= 0;
2472 u32 wol_ctrl_data
= 0;
2473 u16 mii_intr_status_data
= 0;
2474 u32 wufc
= adapter
->wol
;
2476 atl1c_disable_l0s_l1(hw
);
2477 if (netif_running(netdev
)) {
2478 WARN_ON(test_bit(__AT_RESETTING
, &adapter
->flags
));
2479 atl1c_down(adapter
);
2481 netif_device_detach(netdev
);
2484 if (atl1c_phy_power_saving(hw
) != 0)
2485 dev_dbg(&pdev
->dev
, "phy power saving failed");
2487 AT_READ_REG(hw
, REG_MASTER_CTRL
, &master_ctrl_data
);
2488 AT_READ_REG(hw
, REG_MAC_CTRL
, &mac_ctrl_data
);
2490 master_ctrl_data
&= ~MASTER_CTRL_CLK_SEL_DIS
;
2491 mac_ctrl_data
&= ~(MAC_CTRL_PRMLEN_MASK
<< MAC_CTRL_PRMLEN_SHIFT
);
2492 mac_ctrl_data
|= (((u32
)adapter
->hw
.preamble_len
&
2493 MAC_CTRL_PRMLEN_MASK
) <<
2494 MAC_CTRL_PRMLEN_SHIFT
);
2495 mac_ctrl_data
&= ~(MAC_CTRL_SPEED_MASK
<< MAC_CTRL_SPEED_SHIFT
);
2496 mac_ctrl_data
&= ~MAC_CTRL_DUPLX
;
2499 mac_ctrl_data
|= MAC_CTRL_RX_EN
;
2500 if (adapter
->link_speed
== SPEED_1000
||
2501 adapter
->link_speed
== SPEED_0
) {
2502 mac_ctrl_data
|= atl1c_mac_speed_1000
<<
2503 MAC_CTRL_SPEED_SHIFT
;
2504 mac_ctrl_data
|= MAC_CTRL_DUPLX
;
2506 mac_ctrl_data
|= atl1c_mac_speed_10_100
<<
2507 MAC_CTRL_SPEED_SHIFT
;
2509 if (adapter
->link_duplex
== DUPLEX_FULL
)
2510 mac_ctrl_data
|= MAC_CTRL_DUPLX
;
2512 /* turn on magic packet wol */
2513 if (wufc
& AT_WUFC_MAG
)
2514 wol_ctrl_data
|= WOL_MAGIC_EN
| WOL_MAGIC_PME_EN
;
2516 if (wufc
& AT_WUFC_LNKC
) {
2517 wol_ctrl_data
|= WOL_LINK_CHG_EN
| WOL_LINK_CHG_PME_EN
;
2518 /* only link up can wake up */
2519 if (atl1c_write_phy_reg(hw
, MII_IER
, IER_LINK_UP
) != 0) {
2520 dev_dbg(&pdev
->dev
, "%s: read write phy "
2521 "register failed.\n",
2525 /* clear phy interrupt */
2526 atl1c_read_phy_reg(hw
, MII_ISR
, &mii_intr_status_data
);
2527 /* Config MAC Ctrl register */
2528 __atl1c_vlan_mode(netdev
->features
, &mac_ctrl_data
);
2530 /* magic packet maybe Broadcast&multicast&Unicast frame */
2531 if (wufc
& AT_WUFC_MAG
)
2532 mac_ctrl_data
|= MAC_CTRL_BC_EN
;
2535 "%s: suspend MAC=0x%x\n",
2536 atl1c_driver_name
, mac_ctrl_data
);
2537 AT_WRITE_REG(hw
, REG_MASTER_CTRL
, master_ctrl_data
);
2538 AT_WRITE_REG(hw
, REG_WOL_CTRL
, wol_ctrl_data
);
2539 AT_WRITE_REG(hw
, REG_MAC_CTRL
, mac_ctrl_data
);
2541 AT_WRITE_REG(hw
, REG_GPHY_CTRL
, GPHY_CTRL_DEFAULT
|
2542 GPHY_CTRL_EXT_RESET
);
2544 AT_WRITE_REG(hw
, REG_GPHY_CTRL
, GPHY_CTRL_POWER_SAVING
);
2545 master_ctrl_data
|= MASTER_CTRL_CLK_SEL_DIS
;
2546 mac_ctrl_data
|= atl1c_mac_speed_10_100
<< MAC_CTRL_SPEED_SHIFT
;
2547 mac_ctrl_data
|= MAC_CTRL_DUPLX
;
2548 AT_WRITE_REG(hw
, REG_MASTER_CTRL
, master_ctrl_data
);
2549 AT_WRITE_REG(hw
, REG_MAC_CTRL
, mac_ctrl_data
);
2550 AT_WRITE_REG(hw
, REG_WOL_CTRL
, 0);
2551 hw
->phy_configured
= false; /* re-init PHY when resume */
2557 #ifdef CONFIG_PM_SLEEP
2558 static int atl1c_resume(struct device
*dev
)
2560 struct pci_dev
*pdev
= to_pci_dev(dev
);
2561 struct net_device
*netdev
= pci_get_drvdata(pdev
);
2562 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
2564 AT_WRITE_REG(&adapter
->hw
, REG_WOL_CTRL
, 0);
2565 atl1c_reset_pcie(&adapter
->hw
, ATL1C_PCIE_L0S_L1_DISABLE
|
2566 ATL1C_PCIE_PHY_RESET
);
2568 atl1c_phy_reset(&adapter
->hw
);
2569 atl1c_reset_mac(&adapter
->hw
);
2570 atl1c_phy_init(&adapter
->hw
);
2573 AT_READ_REG(&adapter
->hw
, REG_PM_CTRLSTAT
, &pm_data
);
2574 pm_data
&= ~PM_CTRLSTAT_PME_EN
;
2575 AT_WRITE_REG(&adapter
->hw
, REG_PM_CTRLSTAT
, pm_data
);
2578 netif_device_attach(netdev
);
2579 if (netif_running(netdev
))
2586 static void atl1c_shutdown(struct pci_dev
*pdev
)
2588 struct net_device
*netdev
= pci_get_drvdata(pdev
);
2589 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
2591 atl1c_suspend(&pdev
->dev
);
2592 pci_wake_from_d3(pdev
, adapter
->wol
);
2593 pci_set_power_state(pdev
, PCI_D3hot
);
2596 static const struct net_device_ops atl1c_netdev_ops
= {
2597 .ndo_open
= atl1c_open
,
2598 .ndo_stop
= atl1c_close
,
2599 .ndo_validate_addr
= eth_validate_addr
,
2600 .ndo_start_xmit
= atl1c_xmit_frame
,
2601 .ndo_set_mac_address
= atl1c_set_mac_addr
,
2602 .ndo_set_rx_mode
= atl1c_set_multi
,
2603 .ndo_change_mtu
= atl1c_change_mtu
,
2604 .ndo_fix_features
= atl1c_fix_features
,
2605 .ndo_set_features
= atl1c_set_features
,
2606 .ndo_do_ioctl
= atl1c_ioctl
,
2607 .ndo_tx_timeout
= atl1c_tx_timeout
,
2608 .ndo_get_stats
= atl1c_get_stats
,
2609 #ifdef CONFIG_NET_POLL_CONTROLLER
2610 .ndo_poll_controller
= atl1c_netpoll
,
2614 static int atl1c_init_netdev(struct net_device
*netdev
, struct pci_dev
*pdev
)
2616 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
2617 pci_set_drvdata(pdev
, netdev
);
2619 netdev
->irq
= pdev
->irq
;
2620 netdev
->netdev_ops
= &atl1c_netdev_ops
;
2621 netdev
->watchdog_timeo
= AT_TX_WATCHDOG
;
2622 atl1c_set_ethtool_ops(netdev
);
2624 /* TODO: add when ready */
2625 netdev
->hw_features
= NETIF_F_SG
|
2627 NETIF_F_HW_VLAN_RX
|
2630 netdev
->features
= netdev
->hw_features
|
2636 * atl1c_probe - Device Initialization Routine
2637 * @pdev: PCI device information struct
2638 * @ent: entry in atl1c_pci_tbl
2640 * Returns 0 on success, negative on failure
2642 * atl1c_probe initializes an adapter identified by a pci_dev structure.
2643 * The OS initialization, configuring of the adapter private structure,
2644 * and a hardware reset occur.
2646 static int __devinit
atl1c_probe(struct pci_dev
*pdev
,
2647 const struct pci_device_id
*ent
)
2649 struct net_device
*netdev
;
2650 struct atl1c_adapter
*adapter
;
2651 static int cards_found
;
2655 /* enable device (incl. PCI PM wakeup and hotplug setup) */
2656 err
= pci_enable_device_mem(pdev
);
2658 dev_err(&pdev
->dev
, "cannot enable PCI device\n");
2663 * The atl1c chip can DMA to 64-bit addresses, but it uses a single
2664 * shared register for the high 32 bits, so only a single, aligned,
2665 * 4 GB physical address range can be used at a time.
2667 * Supporting 64-bit DMA on this hardware is more trouble than it's
2668 * worth. It is far easier to limit to 32-bit DMA than update
2669 * various kernel subsystems to support the mechanics required by a
2670 * fixed-high-32-bit system.
2672 if ((pci_set_dma_mask(pdev
, DMA_BIT_MASK(32)) != 0) ||
2673 (pci_set_consistent_dma_mask(pdev
, DMA_BIT_MASK(32)) != 0)) {
2674 dev_err(&pdev
->dev
, "No usable DMA configuration,aborting\n");
2678 err
= pci_request_regions(pdev
, atl1c_driver_name
);
2680 dev_err(&pdev
->dev
, "cannot obtain PCI resources\n");
2684 pci_set_master(pdev
);
2686 netdev
= alloc_etherdev(sizeof(struct atl1c_adapter
));
2687 if (netdev
== NULL
) {
2689 dev_err(&pdev
->dev
, "etherdev alloc failed\n");
2690 goto err_alloc_etherdev
;
2693 err
= atl1c_init_netdev(netdev
, pdev
);
2695 dev_err(&pdev
->dev
, "init netdevice failed\n");
2696 goto err_init_netdev
;
2698 adapter
= netdev_priv(netdev
);
2699 adapter
->bd_number
= cards_found
;
2700 adapter
->netdev
= netdev
;
2701 adapter
->pdev
= pdev
;
2702 adapter
->hw
.adapter
= adapter
;
2703 adapter
->msg_enable
= netif_msg_init(-1, atl1c_default_msg
);
2704 adapter
->hw
.hw_addr
= ioremap(pci_resource_start(pdev
, 0), pci_resource_len(pdev
, 0));
2705 if (!adapter
->hw
.hw_addr
) {
2707 dev_err(&pdev
->dev
, "cannot map device registers\n");
2710 netdev
->base_addr
= (unsigned long)adapter
->hw
.hw_addr
;
2713 adapter
->mii
.dev
= netdev
;
2714 adapter
->mii
.mdio_read
= atl1c_mdio_read
;
2715 adapter
->mii
.mdio_write
= atl1c_mdio_write
;
2716 adapter
->mii
.phy_id_mask
= 0x1f;
2717 adapter
->mii
.reg_num_mask
= MDIO_REG_ADDR_MASK
;
2718 netif_napi_add(netdev
, &adapter
->napi
, atl1c_clean
, 64);
2719 setup_timer(&adapter
->phy_config_timer
, atl1c_phy_config
,
2720 (unsigned long)adapter
);
2721 /* setup the private structure */
2722 err
= atl1c_sw_init(adapter
);
2724 dev_err(&pdev
->dev
, "net device private data init failed\n");
2727 atl1c_reset_pcie(&adapter
->hw
, ATL1C_PCIE_L0S_L1_DISABLE
|
2728 ATL1C_PCIE_PHY_RESET
);
2730 /* Init GPHY as early as possible due to power saving issue */
2731 atl1c_phy_reset(&adapter
->hw
);
2733 err
= atl1c_reset_mac(&adapter
->hw
);
2739 /* reset the controller to
2740 * put the device in a known good starting state */
2741 err
= atl1c_phy_init(&adapter
->hw
);
2746 if (atl1c_read_mac_addr(&adapter
->hw
) != 0) {
2748 dev_err(&pdev
->dev
, "get mac address failed\n");
2751 memcpy(netdev
->dev_addr
, adapter
->hw
.mac_addr
, netdev
->addr_len
);
2752 memcpy(netdev
->perm_addr
, adapter
->hw
.mac_addr
, netdev
->addr_len
);
2753 if (netif_msg_probe(adapter
))
2754 dev_dbg(&pdev
->dev
, "mac address : %pM\n",
2755 adapter
->hw
.mac_addr
);
2757 atl1c_hw_set_mac_addr(&adapter
->hw
);
2758 INIT_WORK(&adapter
->common_task
, atl1c_common_task
);
2759 adapter
->work_event
= 0;
2760 err
= register_netdev(netdev
);
2762 dev_err(&pdev
->dev
, "register netdevice failed\n");
2766 if (netif_msg_probe(adapter
))
2767 dev_info(&pdev
->dev
, "version %s\n", ATL1C_DRV_VERSION
);
2775 iounmap(adapter
->hw
.hw_addr
);
2778 free_netdev(netdev
);
2780 pci_release_regions(pdev
);
2783 pci_disable_device(pdev
);
2788 * atl1c_remove - Device Removal Routine
2789 * @pdev: PCI device information struct
2791 * atl1c_remove is called by the PCI subsystem to alert the driver
2792 * that it should release a PCI device. The could be caused by a
2793 * Hot-Plug event, or because the driver is going to be removed from
2796 static void __devexit
atl1c_remove(struct pci_dev
*pdev
)
2798 struct net_device
*netdev
= pci_get_drvdata(pdev
);
2799 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
2801 unregister_netdev(netdev
);
2802 atl1c_phy_disable(&adapter
->hw
);
2804 iounmap(adapter
->hw
.hw_addr
);
2806 pci_release_regions(pdev
);
2807 pci_disable_device(pdev
);
2808 free_netdev(netdev
);
2812 * atl1c_io_error_detected - called when PCI error is detected
2813 * @pdev: Pointer to PCI device
2814 * @state: The current pci connection state
2816 * This function is called after a PCI bus error affecting
2817 * this device has been detected.
2819 static pci_ers_result_t
atl1c_io_error_detected(struct pci_dev
*pdev
,
2820 pci_channel_state_t state
)
2822 struct net_device
*netdev
= pci_get_drvdata(pdev
);
2823 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
2825 netif_device_detach(netdev
);
2827 if (state
== pci_channel_io_perm_failure
)
2828 return PCI_ERS_RESULT_DISCONNECT
;
2830 if (netif_running(netdev
))
2831 atl1c_down(adapter
);
2833 pci_disable_device(pdev
);
2835 /* Request a slot slot reset. */
2836 return PCI_ERS_RESULT_NEED_RESET
;
2840 * atl1c_io_slot_reset - called after the pci bus has been reset.
2841 * @pdev: Pointer to PCI device
2843 * Restart the card from scratch, as if from a cold-boot. Implementation
2844 * resembles the first-half of the e1000_resume routine.
2846 static pci_ers_result_t
atl1c_io_slot_reset(struct pci_dev
*pdev
)
2848 struct net_device
*netdev
= pci_get_drvdata(pdev
);
2849 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
2851 if (pci_enable_device(pdev
)) {
2852 if (netif_msg_hw(adapter
))
2854 "Cannot re-enable PCI device after reset\n");
2855 return PCI_ERS_RESULT_DISCONNECT
;
2857 pci_set_master(pdev
);
2859 pci_enable_wake(pdev
, PCI_D3hot
, 0);
2860 pci_enable_wake(pdev
, PCI_D3cold
, 0);
2862 atl1c_reset_mac(&adapter
->hw
);
2864 return PCI_ERS_RESULT_RECOVERED
;
2868 * atl1c_io_resume - called when traffic can start flowing again.
2869 * @pdev: Pointer to PCI device
2871 * This callback is called when the error recovery driver tells us that
2872 * its OK to resume normal operation. Implementation resembles the
2873 * second-half of the atl1c_resume routine.
2875 static void atl1c_io_resume(struct pci_dev
*pdev
)
2877 struct net_device
*netdev
= pci_get_drvdata(pdev
);
2878 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
2880 if (netif_running(netdev
)) {
2881 if (atl1c_up(adapter
)) {
2882 if (netif_msg_hw(adapter
))
2884 "Cannot bring device back up after reset\n");
2889 netif_device_attach(netdev
);
2892 static struct pci_error_handlers atl1c_err_handler
= {
2893 .error_detected
= atl1c_io_error_detected
,
2894 .slot_reset
= atl1c_io_slot_reset
,
2895 .resume
= atl1c_io_resume
,
2898 static SIMPLE_DEV_PM_OPS(atl1c_pm_ops
, atl1c_suspend
, atl1c_resume
);
2900 static struct pci_driver atl1c_driver
= {
2901 .name
= atl1c_driver_name
,
2902 .id_table
= atl1c_pci_tbl
,
2903 .probe
= atl1c_probe
,
2904 .remove
= __devexit_p(atl1c_remove
),
2905 .shutdown
= atl1c_shutdown
,
2906 .err_handler
= &atl1c_err_handler
,
2907 .driver
.pm
= &atl1c_pm_ops
,
2911 * atl1c_init_module - Driver Registration Routine
2913 * atl1c_init_module is the first routine called when the driver is
2914 * loaded. All it does is register with the PCI subsystem.
2916 static int __init
atl1c_init_module(void)
2918 return pci_register_driver(&atl1c_driver
);
2922 * atl1c_exit_module - Driver Exit Cleanup Routine
2924 * atl1c_exit_module is called just before the driver is removed
2927 static void __exit
atl1c_exit_module(void)
2929 pci_unregister_driver(&atl1c_driver
);
2932 module_init(atl1c_init_module
);
2933 module_exit(atl1c_exit_module
);