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 "1.0.1.1-NAPI"
25 char atl1c_driver_name
[] = "atl1c";
26 char atl1c_driver_version
[] = ATL1C_DRV_VERSION
;
29 * atl1c_pci_tbl - PCI Device ID Table
31 * Wildcard entries (PCI_ANY_ID) should come last
32 * Last entry must be all 0s
34 * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
35 * Class, Class Mask, private data (not used) }
37 static const struct pci_device_id atl1c_pci_tbl
[] = {
38 {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC
, PCI_DEVICE_ID_ATTANSIC_L1C
)},
39 {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC
, PCI_DEVICE_ID_ATTANSIC_L2C
)},
40 {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC
, PCI_DEVICE_ID_ATHEROS_L2C_B
)},
41 {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC
, PCI_DEVICE_ID_ATHEROS_L2C_B2
)},
42 {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC
, PCI_DEVICE_ID_ATHEROS_L1D
)},
43 {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC
, PCI_DEVICE_ID_ATHEROS_L1D_2_0
)},
44 /* required last entry */
47 MODULE_DEVICE_TABLE(pci
, atl1c_pci_tbl
);
49 MODULE_AUTHOR("Jie Yang");
50 MODULE_AUTHOR("Qualcomm Atheros Inc., <nic-devel@qualcomm.com>");
51 MODULE_DESCRIPTION("Qualcomm Atheros 100/1000M Ethernet Network Driver");
52 MODULE_LICENSE("GPL");
53 MODULE_VERSION(ATL1C_DRV_VERSION
);
55 static int atl1c_stop_mac(struct atl1c_hw
*hw
);
56 static void atl1c_disable_l0s_l1(struct atl1c_hw
*hw
);
57 static void atl1c_set_aspm(struct atl1c_hw
*hw
, u16 link_speed
);
58 static void atl1c_start_mac(struct atl1c_adapter
*adapter
);
59 static void atl1c_clean_rx_irq(struct atl1c_adapter
*adapter
,
60 int *work_done
, int work_to_do
);
61 static int atl1c_up(struct atl1c_adapter
*adapter
);
62 static void atl1c_down(struct atl1c_adapter
*adapter
);
63 static int atl1c_reset_mac(struct atl1c_hw
*hw
);
64 static void atl1c_reset_dma_ring(struct atl1c_adapter
*adapter
);
65 static int atl1c_configure(struct atl1c_adapter
*adapter
);
66 static int atl1c_alloc_rx_buffer(struct atl1c_adapter
*adapter
);
69 static const u32 atl1c_default_msg
= NETIF_MSG_DRV
| NETIF_MSG_PROBE
|
70 NETIF_MSG_LINK
| NETIF_MSG_TIMER
| NETIF_MSG_IFDOWN
| NETIF_MSG_IFUP
;
71 static void atl1c_pcie_patch(struct atl1c_hw
*hw
)
75 /* pclk sel could switch to 25M */
76 AT_READ_REG(hw
, REG_MASTER_CTRL
, &mst_data
);
77 mst_data
&= ~MASTER_CTRL_CLK_SEL_DIS
;
78 AT_WRITE_REG(hw
, REG_MASTER_CTRL
, mst_data
);
80 /* WoL/PCIE related settings */
81 if (hw
->nic_type
== athr_l1c
|| hw
->nic_type
== athr_l2c
) {
82 AT_READ_REG(hw
, REG_PCIE_PHYMISC
, &data
);
83 data
|= PCIE_PHYMISC_FORCE_RCV_DET
;
84 AT_WRITE_REG(hw
, REG_PCIE_PHYMISC
, data
);
85 } else { /* new dev set bit5 of MASTER */
86 if (!(mst_data
& MASTER_CTRL_WAKEN_25M
))
87 AT_WRITE_REG(hw
, REG_MASTER_CTRL
,
88 mst_data
| MASTER_CTRL_WAKEN_25M
);
90 /* aspm/PCIE setting only for l2cb 1.0 */
91 if (hw
->nic_type
== athr_l2c_b
&& hw
->revision_id
== L2CB_V10
) {
92 AT_READ_REG(hw
, REG_PCIE_PHYMISC2
, &data
);
93 data
= FIELD_SETX(data
, PCIE_PHYMISC2_CDR_BW
,
94 L2CB1_PCIE_PHYMISC2_CDR_BW
);
95 data
= FIELD_SETX(data
, PCIE_PHYMISC2_L0S_TH
,
96 L2CB1_PCIE_PHYMISC2_L0S_TH
);
97 AT_WRITE_REG(hw
, REG_PCIE_PHYMISC2
, data
);
98 /* extend L1 sync timer */
99 AT_READ_REG(hw
, REG_LINK_CTRL
, &data
);
100 data
|= LINK_CTRL_EXT_SYNC
;
101 AT_WRITE_REG(hw
, REG_LINK_CTRL
, data
);
103 /* l2cb 1.x & l1d 1.x */
104 if (hw
->nic_type
== athr_l2c_b
|| hw
->nic_type
== athr_l1d
) {
105 AT_READ_REG(hw
, REG_PM_CTRL
, &data
);
106 data
|= PM_CTRL_L0S_BUFSRX_EN
;
107 AT_WRITE_REG(hw
, REG_PM_CTRL
, data
);
108 /* clear vendor msg */
109 AT_READ_REG(hw
, REG_DMA_DBG
, &data
);
110 AT_WRITE_REG(hw
, REG_DMA_DBG
, data
& ~DMA_DBG_VENDOR_MSG
);
114 /* FIXME: no need any more ? */
116 * atl1c_init_pcie - init PCIE module
118 static void atl1c_reset_pcie(struct atl1c_hw
*hw
, u32 flag
)
122 struct pci_dev
*pdev
= hw
->adapter
->pdev
;
125 AT_READ_REG(hw
, PCI_COMMAND
, &pci_cmd
);
126 pci_cmd
&= ~PCI_COMMAND_INTX_DISABLE
;
127 pci_cmd
|= (PCI_COMMAND_MEMORY
| PCI_COMMAND_MASTER
|
129 AT_WRITE_REG(hw
, PCI_COMMAND
, pci_cmd
);
132 * Clear any PowerSaveing Settings
134 pci_enable_wake(pdev
, PCI_D3hot
, 0);
135 pci_enable_wake(pdev
, PCI_D3cold
, 0);
136 /* wol sts read-clear */
137 AT_READ_REG(hw
, REG_WOL_CTRL
, &data
);
138 AT_WRITE_REG(hw
, REG_WOL_CTRL
, 0);
141 * Mask some pcie error bits
143 pos
= pci_find_ext_capability(pdev
, PCI_EXT_CAP_ID_ERR
);
145 pci_read_config_dword(pdev
, pos
+ PCI_ERR_UNCOR_SEVER
, &data
);
146 data
&= ~(PCI_ERR_UNC_DLP
| PCI_ERR_UNC_FCP
);
147 pci_write_config_dword(pdev
, pos
+ PCI_ERR_UNCOR_SEVER
, data
);
149 /* clear error status */
150 pcie_capability_write_word(pdev
, PCI_EXP_DEVSTA
,
151 PCI_EXP_DEVSTA_NFED
|
156 AT_READ_REG(hw
, REG_LTSSM_ID_CTRL
, &data
);
157 data
&= ~LTSSM_ID_EN_WRO
;
158 AT_WRITE_REG(hw
, REG_LTSSM_ID_CTRL
, data
);
160 atl1c_pcie_patch(hw
);
161 if (flag
& ATL1C_PCIE_L0S_L1_DISABLE
)
162 atl1c_disable_l0s_l1(hw
);
168 * atl1c_irq_enable - Enable default interrupt generation settings
169 * @adapter: board private structure
171 static inline void atl1c_irq_enable(struct atl1c_adapter
*adapter
)
173 if (likely(atomic_dec_and_test(&adapter
->irq_sem
))) {
174 AT_WRITE_REG(&adapter
->hw
, REG_ISR
, 0x7FFFFFFF);
175 AT_WRITE_REG(&adapter
->hw
, REG_IMR
, adapter
->hw
.intr_mask
);
176 AT_WRITE_FLUSH(&adapter
->hw
);
181 * atl1c_irq_disable - Mask off interrupt generation on the NIC
182 * @adapter: board private structure
184 static inline void atl1c_irq_disable(struct atl1c_adapter
*adapter
)
186 atomic_inc(&adapter
->irq_sem
);
187 AT_WRITE_REG(&adapter
->hw
, REG_IMR
, 0);
188 AT_WRITE_REG(&adapter
->hw
, REG_ISR
, ISR_DIS_INT
);
189 AT_WRITE_FLUSH(&adapter
->hw
);
190 synchronize_irq(adapter
->pdev
->irq
);
194 * atl1c_irq_reset - reset interrupt confiure on the NIC
195 * @adapter: board private structure
197 static inline void atl1c_irq_reset(struct atl1c_adapter
*adapter
)
199 atomic_set(&adapter
->irq_sem
, 1);
200 atl1c_irq_enable(adapter
);
204 * atl1c_wait_until_idle - wait up to AT_HW_MAX_IDLE_DELAY reads
205 * of the idle status register until the device is actually idle
207 static u32
atl1c_wait_until_idle(struct atl1c_hw
*hw
, u32 modu_ctrl
)
212 for (timeout
= 0; timeout
< AT_HW_MAX_IDLE_DELAY
; timeout
++) {
213 AT_READ_REG(hw
, REG_IDLE_STATUS
, &data
);
214 if ((data
& modu_ctrl
) == 0)
222 * atl1c_phy_config - Timer Call-back
223 * @data: pointer to netdev cast into an unsigned long
225 static void atl1c_phy_config(struct timer_list
*t
)
227 struct atl1c_adapter
*adapter
= from_timer(adapter
, t
,
229 struct atl1c_hw
*hw
= &adapter
->hw
;
232 spin_lock_irqsave(&adapter
->mdio_lock
, flags
);
233 atl1c_restart_autoneg(hw
);
234 spin_unlock_irqrestore(&adapter
->mdio_lock
, flags
);
237 void atl1c_reinit_locked(struct atl1c_adapter
*adapter
)
239 WARN_ON(in_interrupt());
242 clear_bit(__AT_RESETTING
, &adapter
->flags
);
245 static void atl1c_check_link_status(struct atl1c_adapter
*adapter
)
247 struct atl1c_hw
*hw
= &adapter
->hw
;
248 struct net_device
*netdev
= adapter
->netdev
;
249 struct pci_dev
*pdev
= adapter
->pdev
;
252 u16 speed
, duplex
, phy_data
;
254 spin_lock_irqsave(&adapter
->mdio_lock
, flags
);
255 /* MII_BMSR must read twise */
256 atl1c_read_phy_reg(hw
, MII_BMSR
, &phy_data
);
257 atl1c_read_phy_reg(hw
, MII_BMSR
, &phy_data
);
258 spin_unlock_irqrestore(&adapter
->mdio_lock
, flags
);
260 if ((phy_data
& BMSR_LSTATUS
) == 0) {
262 netif_carrier_off(netdev
);
263 hw
->hibernate
= true;
264 if (atl1c_reset_mac(hw
) != 0)
265 if (netif_msg_hw(adapter
))
266 dev_warn(&pdev
->dev
, "reset mac failed\n");
267 atl1c_set_aspm(hw
, SPEED_0
);
268 atl1c_post_phy_linkchg(hw
, SPEED_0
);
269 atl1c_reset_dma_ring(adapter
);
270 atl1c_configure(adapter
);
273 hw
->hibernate
= false;
274 spin_lock_irqsave(&adapter
->mdio_lock
, flags
);
275 err
= atl1c_get_speed_and_duplex(hw
, &speed
, &duplex
);
276 spin_unlock_irqrestore(&adapter
->mdio_lock
, flags
);
279 /* link result is our setting */
280 if (adapter
->link_speed
!= speed
||
281 adapter
->link_duplex
!= duplex
) {
282 adapter
->link_speed
= speed
;
283 adapter
->link_duplex
= duplex
;
284 atl1c_set_aspm(hw
, speed
);
285 atl1c_post_phy_linkchg(hw
, speed
);
286 atl1c_start_mac(adapter
);
287 if (netif_msg_link(adapter
))
289 "%s: %s NIC Link is Up<%d Mbps %s>\n",
290 atl1c_driver_name
, netdev
->name
,
292 adapter
->link_duplex
== FULL_DUPLEX
?
293 "Full Duplex" : "Half Duplex");
295 if (!netif_carrier_ok(netdev
))
296 netif_carrier_on(netdev
);
300 static void atl1c_link_chg_event(struct atl1c_adapter
*adapter
)
302 struct net_device
*netdev
= adapter
->netdev
;
303 struct pci_dev
*pdev
= adapter
->pdev
;
307 spin_lock(&adapter
->mdio_lock
);
308 atl1c_read_phy_reg(&adapter
->hw
, MII_BMSR
, &phy_data
);
309 atl1c_read_phy_reg(&adapter
->hw
, MII_BMSR
, &phy_data
);
310 spin_unlock(&adapter
->mdio_lock
);
311 link_up
= phy_data
& BMSR_LSTATUS
;
312 /* notify upper layer link down ASAP */
314 if (netif_carrier_ok(netdev
)) {
315 /* old link state: Up */
316 netif_carrier_off(netdev
);
317 if (netif_msg_link(adapter
))
319 "%s: %s NIC Link is Down\n",
320 atl1c_driver_name
, netdev
->name
);
321 adapter
->link_speed
= SPEED_0
;
325 set_bit(ATL1C_WORK_EVENT_LINK_CHANGE
, &adapter
->work_event
);
326 schedule_work(&adapter
->common_task
);
329 static void atl1c_common_task(struct work_struct
*work
)
331 struct atl1c_adapter
*adapter
;
332 struct net_device
*netdev
;
334 adapter
= container_of(work
, struct atl1c_adapter
, common_task
);
335 netdev
= adapter
->netdev
;
337 if (test_bit(__AT_DOWN
, &adapter
->flags
))
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_irq_disable(adapter
);
350 atl1c_check_link_status(adapter
);
351 atl1c_irq_enable(adapter
);
356 static void atl1c_del_timer(struct atl1c_adapter
*adapter
)
358 del_timer_sync(&adapter
->phy_config_timer
);
363 * atl1c_tx_timeout - Respond to a Tx Hang
364 * @netdev: network interface device structure
366 static void atl1c_tx_timeout(struct net_device
*netdev
)
368 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
370 /* Do the reset outside of interrupt context */
371 set_bit(ATL1C_WORK_EVENT_RESET
, &adapter
->work_event
);
372 schedule_work(&adapter
->common_task
);
376 * atl1c_set_multi - Multicast and Promiscuous mode set
377 * @netdev: network interface device structure
379 * The set_multi entry point is called whenever the multicast address
380 * list or the network interface flags are updated. This routine is
381 * responsible for configuring the hardware for proper multicast,
382 * promiscuous mode, and all-multi behavior.
384 static void atl1c_set_multi(struct net_device
*netdev
)
386 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
387 struct atl1c_hw
*hw
= &adapter
->hw
;
388 struct netdev_hw_addr
*ha
;
392 /* Check for Promiscuous and All Multicast modes */
393 AT_READ_REG(hw
, REG_MAC_CTRL
, &mac_ctrl_data
);
395 if (netdev
->flags
& IFF_PROMISC
) {
396 mac_ctrl_data
|= MAC_CTRL_PROMIS_EN
;
397 } else if (netdev
->flags
& IFF_ALLMULTI
) {
398 mac_ctrl_data
|= MAC_CTRL_MC_ALL_EN
;
399 mac_ctrl_data
&= ~MAC_CTRL_PROMIS_EN
;
401 mac_ctrl_data
&= ~(MAC_CTRL_PROMIS_EN
| MAC_CTRL_MC_ALL_EN
);
404 AT_WRITE_REG(hw
, REG_MAC_CTRL
, mac_ctrl_data
);
406 /* clear the old settings from the multicast hash table */
407 AT_WRITE_REG(hw
, REG_RX_HASH_TABLE
, 0);
408 AT_WRITE_REG_ARRAY(hw
, REG_RX_HASH_TABLE
, 1, 0);
410 /* comoute mc addresses' hash value ,and put it into hash table */
411 netdev_for_each_mc_addr(ha
, netdev
) {
412 hash_value
= atl1c_hash_mc_addr(hw
, ha
->addr
);
413 atl1c_hash_set(hw
, hash_value
);
417 static void __atl1c_vlan_mode(netdev_features_t features
, u32
*mac_ctrl_data
)
419 if (features
& NETIF_F_HW_VLAN_CTAG_RX
) {
420 /* enable VLAN tag insert/strip */
421 *mac_ctrl_data
|= MAC_CTRL_RMV_VLAN
;
423 /* disable VLAN tag insert/strip */
424 *mac_ctrl_data
&= ~MAC_CTRL_RMV_VLAN
;
428 static void atl1c_vlan_mode(struct net_device
*netdev
,
429 netdev_features_t features
)
431 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
432 struct pci_dev
*pdev
= adapter
->pdev
;
433 u32 mac_ctrl_data
= 0;
435 if (netif_msg_pktdata(adapter
))
436 dev_dbg(&pdev
->dev
, "atl1c_vlan_mode\n");
438 atl1c_irq_disable(adapter
);
439 AT_READ_REG(&adapter
->hw
, REG_MAC_CTRL
, &mac_ctrl_data
);
440 __atl1c_vlan_mode(features
, &mac_ctrl_data
);
441 AT_WRITE_REG(&adapter
->hw
, REG_MAC_CTRL
, mac_ctrl_data
);
442 atl1c_irq_enable(adapter
);
445 static void atl1c_restore_vlan(struct atl1c_adapter
*adapter
)
447 struct pci_dev
*pdev
= adapter
->pdev
;
449 if (netif_msg_pktdata(adapter
))
450 dev_dbg(&pdev
->dev
, "atl1c_restore_vlan\n");
451 atl1c_vlan_mode(adapter
->netdev
, adapter
->netdev
->features
);
455 * atl1c_set_mac - Change the Ethernet Address of the NIC
456 * @netdev: network interface device structure
457 * @p: pointer to an address structure
459 * Returns 0 on success, negative on failure
461 static int atl1c_set_mac_addr(struct net_device
*netdev
, void *p
)
463 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
464 struct sockaddr
*addr
= p
;
466 if (!is_valid_ether_addr(addr
->sa_data
))
467 return -EADDRNOTAVAIL
;
469 if (netif_running(netdev
))
472 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
473 memcpy(adapter
->hw
.mac_addr
, addr
->sa_data
, netdev
->addr_len
);
475 atl1c_hw_set_mac_addr(&adapter
->hw
, adapter
->hw
.mac_addr
);
480 static void atl1c_set_rxbufsize(struct atl1c_adapter
*adapter
,
481 struct net_device
*dev
)
483 unsigned int head_size
;
486 adapter
->rx_buffer_len
= mtu
> AT_RX_BUF_SIZE
?
487 roundup(mtu
+ ETH_HLEN
+ ETH_FCS_LEN
+ VLAN_HLEN
, 8) : AT_RX_BUF_SIZE
;
489 head_size
= SKB_DATA_ALIGN(adapter
->rx_buffer_len
+ NET_SKB_PAD
) +
490 SKB_DATA_ALIGN(sizeof(struct skb_shared_info
));
491 adapter
->rx_frag_size
= roundup_pow_of_two(head_size
);
494 static netdev_features_t
atl1c_fix_features(struct net_device
*netdev
,
495 netdev_features_t features
)
498 * Since there is no support for separate rx/tx vlan accel
499 * enable/disable make sure tx flag is always in same state as rx.
501 if (features
& NETIF_F_HW_VLAN_CTAG_RX
)
502 features
|= NETIF_F_HW_VLAN_CTAG_TX
;
504 features
&= ~NETIF_F_HW_VLAN_CTAG_TX
;
506 if (netdev
->mtu
> MAX_TSO_FRAME_SIZE
)
507 features
&= ~(NETIF_F_TSO
| NETIF_F_TSO6
);
512 static int atl1c_set_features(struct net_device
*netdev
,
513 netdev_features_t features
)
515 netdev_features_t changed
= netdev
->features
^ features
;
517 if (changed
& NETIF_F_HW_VLAN_CTAG_RX
)
518 atl1c_vlan_mode(netdev
, features
);
523 static void atl1c_set_max_mtu(struct net_device
*netdev
)
525 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
526 struct atl1c_hw
*hw
= &adapter
->hw
;
528 switch (hw
->nic_type
) {
529 /* These (GbE) devices support jumbo packets, max_mtu 6122 */
533 netdev
->max_mtu
= MAX_JUMBO_FRAME_SIZE
-
534 (ETH_HLEN
+ ETH_FCS_LEN
+ VLAN_HLEN
);
536 /* The 10/100 devices don't support jumbo packets, max_mtu 1500 */
538 netdev
->max_mtu
= ETH_DATA_LEN
;
544 * atl1c_change_mtu - Change the Maximum Transfer Unit
545 * @netdev: network interface device structure
546 * @new_mtu: new value for maximum frame size
548 * Returns 0 on success, negative on failure
550 static int atl1c_change_mtu(struct net_device
*netdev
, int new_mtu
)
552 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
555 if (netif_running(netdev
)) {
556 while (test_and_set_bit(__AT_RESETTING
, &adapter
->flags
))
558 netdev
->mtu
= new_mtu
;
559 adapter
->hw
.max_frame_size
= new_mtu
;
560 atl1c_set_rxbufsize(adapter
, netdev
);
562 netdev_update_features(netdev
);
564 clear_bit(__AT_RESETTING
, &adapter
->flags
);
570 * caller should hold mdio_lock
572 static int atl1c_mdio_read(struct net_device
*netdev
, int phy_id
, int reg_num
)
574 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
577 atl1c_read_phy_reg(&adapter
->hw
, reg_num
, &result
);
581 static void atl1c_mdio_write(struct net_device
*netdev
, int phy_id
,
582 int reg_num
, int val
)
584 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
586 atl1c_write_phy_reg(&adapter
->hw
, reg_num
, val
);
589 static int atl1c_mii_ioctl(struct net_device
*netdev
,
590 struct ifreq
*ifr
, int cmd
)
592 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
593 struct pci_dev
*pdev
= adapter
->pdev
;
594 struct mii_ioctl_data
*data
= if_mii(ifr
);
598 if (!netif_running(netdev
))
601 spin_lock_irqsave(&adapter
->mdio_lock
, flags
);
608 if (atl1c_read_phy_reg(&adapter
->hw
, data
->reg_num
& 0x1F,
616 if (data
->reg_num
& ~(0x1F)) {
621 dev_dbg(&pdev
->dev
, "<atl1c_mii_ioctl> write %x %x",
622 data
->reg_num
, data
->val_in
);
623 if (atl1c_write_phy_reg(&adapter
->hw
,
624 data
->reg_num
, data
->val_in
)) {
631 retval
= -EOPNOTSUPP
;
635 spin_unlock_irqrestore(&adapter
->mdio_lock
, flags
);
639 static int atl1c_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
645 return atl1c_mii_ioctl(netdev
, ifr
, cmd
);
652 * atl1c_alloc_queues - Allocate memory for all rings
653 * @adapter: board private structure to initialize
656 static int atl1c_alloc_queues(struct atl1c_adapter
*adapter
)
661 static void atl1c_set_mac_type(struct atl1c_hw
*hw
)
663 switch (hw
->device_id
) {
664 case PCI_DEVICE_ID_ATTANSIC_L2C
:
665 hw
->nic_type
= athr_l2c
;
667 case PCI_DEVICE_ID_ATTANSIC_L1C
:
668 hw
->nic_type
= athr_l1c
;
670 case PCI_DEVICE_ID_ATHEROS_L2C_B
:
671 hw
->nic_type
= athr_l2c_b
;
673 case PCI_DEVICE_ID_ATHEROS_L2C_B2
:
674 hw
->nic_type
= athr_l2c_b2
;
676 case PCI_DEVICE_ID_ATHEROS_L1D
:
677 hw
->nic_type
= athr_l1d
;
679 case PCI_DEVICE_ID_ATHEROS_L1D_2_0
:
680 hw
->nic_type
= athr_l1d_2
;
687 static int atl1c_setup_mac_funcs(struct atl1c_hw
*hw
)
691 atl1c_set_mac_type(hw
);
692 AT_READ_REG(hw
, REG_LINK_CTRL
, &link_ctrl_data
);
694 hw
->ctrl_flags
= ATL1C_INTR_MODRT_ENABLE
|
695 ATL1C_TXQ_MODE_ENHANCE
;
696 hw
->ctrl_flags
|= ATL1C_ASPM_L0S_SUPPORT
|
697 ATL1C_ASPM_L1_SUPPORT
;
698 hw
->ctrl_flags
|= ATL1C_ASPM_CTRL_MON
;
700 if (hw
->nic_type
== athr_l1c
||
701 hw
->nic_type
== athr_l1d
||
702 hw
->nic_type
== athr_l1d_2
)
703 hw
->link_cap_flags
|= ATL1C_LINK_CAP_1000M
;
707 struct atl1c_platform_patch
{
713 #define ATL1C_LINK_PATCH 0x1
715 static const struct atl1c_platform_patch plats
[] = {
716 {0x2060, 0xC1, 0x1019, 0x8152, 0x1},
717 {0x2060, 0xC1, 0x1019, 0x2060, 0x1},
718 {0x2060, 0xC1, 0x1019, 0xE000, 0x1},
719 {0x2062, 0xC0, 0x1019, 0x8152, 0x1},
720 {0x2062, 0xC0, 0x1019, 0x2062, 0x1},
721 {0x2062, 0xC0, 0x1458, 0xE000, 0x1},
722 {0x2062, 0xC1, 0x1019, 0x8152, 0x1},
723 {0x2062, 0xC1, 0x1019, 0x2062, 0x1},
724 {0x2062, 0xC1, 0x1458, 0xE000, 0x1},
725 {0x2062, 0xC1, 0x1565, 0x2802, 0x1},
726 {0x2062, 0xC1, 0x1565, 0x2801, 0x1},
727 {0x1073, 0xC0, 0x1019, 0x8151, 0x1},
728 {0x1073, 0xC0, 0x1019, 0x1073, 0x1},
729 {0x1073, 0xC0, 0x1458, 0xE000, 0x1},
730 {0x1083, 0xC0, 0x1458, 0xE000, 0x1},
731 {0x1083, 0xC0, 0x1019, 0x8151, 0x1},
732 {0x1083, 0xC0, 0x1019, 0x1083, 0x1},
733 {0x1083, 0xC0, 0x1462, 0x7680, 0x1},
734 {0x1083, 0xC0, 0x1565, 0x2803, 0x1},
738 static void atl1c_patch_assign(struct atl1c_hw
*hw
)
740 struct pci_dev
*pdev
= hw
->adapter
->pdev
;
744 hw
->msi_lnkpatch
= false;
746 while (plats
[i
].pci_did
!= 0) {
747 if (plats
[i
].pci_did
== hw
->device_id
&&
748 plats
[i
].pci_revid
== hw
->revision_id
&&
749 plats
[i
].subsystem_vid
== hw
->subsystem_vendor_id
&&
750 plats
[i
].subsystem_did
== hw
->subsystem_id
) {
751 if (plats
[i
].patch_flag
& ATL1C_LINK_PATCH
)
752 hw
->msi_lnkpatch
= true;
757 if (hw
->device_id
== PCI_DEVICE_ID_ATHEROS_L2C_B2
&&
758 hw
->revision_id
== L2CB_V21
) {
759 /* config access mode */
760 pci_write_config_dword(pdev
, REG_PCIE_IND_ACC_ADDR
,
761 REG_PCIE_DEV_MISC_CTRL
);
762 pci_read_config_dword(pdev
, REG_PCIE_IND_ACC_DATA
, &misc_ctrl
);
764 pci_write_config_dword(pdev
, REG_PCIE_IND_ACC_ADDR
,
765 REG_PCIE_DEV_MISC_CTRL
);
766 pci_write_config_dword(pdev
, REG_PCIE_IND_ACC_DATA
, misc_ctrl
);
770 * atl1c_sw_init - Initialize general software structures (struct atl1c_adapter)
771 * @adapter: board private structure to initialize
773 * atl1c_sw_init initializes the Adapter private data structure.
774 * Fields are initialized based on PCI device information and
775 * OS network device settings (MTU size).
777 static int atl1c_sw_init(struct atl1c_adapter
*adapter
)
779 struct atl1c_hw
*hw
= &adapter
->hw
;
780 struct pci_dev
*pdev
= adapter
->pdev
;
785 device_set_wakeup_enable(&pdev
->dev
, false);
786 adapter
->link_speed
= SPEED_0
;
787 adapter
->link_duplex
= FULL_DUPLEX
;
788 adapter
->tpd_ring
[0].count
= 1024;
789 adapter
->rfd_ring
.count
= 512;
791 hw
->vendor_id
= pdev
->vendor
;
792 hw
->device_id
= pdev
->device
;
793 hw
->subsystem_vendor_id
= pdev
->subsystem_vendor
;
794 hw
->subsystem_id
= pdev
->subsystem_device
;
795 pci_read_config_dword(pdev
, PCI_CLASS_REVISION
, &revision
);
796 hw
->revision_id
= revision
& 0xFF;
797 /* before link up, we assume hibernate is true */
798 hw
->hibernate
= true;
799 hw
->media_type
= MEDIA_TYPE_AUTO_SENSOR
;
800 if (atl1c_setup_mac_funcs(hw
) != 0) {
801 dev_err(&pdev
->dev
, "set mac function pointers failed\n");
804 atl1c_patch_assign(hw
);
806 hw
->intr_mask
= IMR_NORMAL_MASK
;
807 hw
->phy_configured
= false;
808 hw
->preamble_len
= 7;
809 hw
->max_frame_size
= adapter
->netdev
->mtu
;
810 hw
->autoneg_advertised
= ADVERTISED_Autoneg
;
811 hw
->indirect_tab
= 0xE4E4E4E4;
814 hw
->ict
= 50000; /* 100ms */
815 hw
->smb_timer
= 200000; /* 400ms */
821 hw
->dma_order
= atl1c_dma_ord_out
;
822 hw
->dmar_block
= atl1c_dma_req_1024
;
824 if (atl1c_alloc_queues(adapter
)) {
825 dev_err(&pdev
->dev
, "Unable to allocate memory for queues\n");
829 atl1c_set_rxbufsize(adapter
, adapter
->netdev
);
830 atomic_set(&adapter
->irq_sem
, 1);
831 spin_lock_init(&adapter
->mdio_lock
);
832 set_bit(__AT_DOWN
, &adapter
->flags
);
837 static inline void atl1c_clean_buffer(struct pci_dev
*pdev
,
838 struct atl1c_buffer
*buffer_info
)
841 if (buffer_info
->flags
& ATL1C_BUFFER_FREE
)
843 if (buffer_info
->dma
) {
844 if (buffer_info
->flags
& ATL1C_PCIMAP_FROMDEVICE
)
845 pci_driection
= PCI_DMA_FROMDEVICE
;
847 pci_driection
= PCI_DMA_TODEVICE
;
849 if (buffer_info
->flags
& ATL1C_PCIMAP_SINGLE
)
850 pci_unmap_single(pdev
, buffer_info
->dma
,
851 buffer_info
->length
, pci_driection
);
852 else if (buffer_info
->flags
& ATL1C_PCIMAP_PAGE
)
853 pci_unmap_page(pdev
, buffer_info
->dma
,
854 buffer_info
->length
, pci_driection
);
856 if (buffer_info
->skb
)
857 dev_consume_skb_any(buffer_info
->skb
);
858 buffer_info
->dma
= 0;
859 buffer_info
->skb
= NULL
;
860 ATL1C_SET_BUFFER_STATE(buffer_info
, ATL1C_BUFFER_FREE
);
863 * atl1c_clean_tx_ring - Free Tx-skb
864 * @adapter: board private structure
866 static void atl1c_clean_tx_ring(struct atl1c_adapter
*adapter
,
867 enum atl1c_trans_queue type
)
869 struct atl1c_tpd_ring
*tpd_ring
= &adapter
->tpd_ring
[type
];
870 struct atl1c_buffer
*buffer_info
;
871 struct pci_dev
*pdev
= adapter
->pdev
;
872 u16 index
, ring_count
;
874 ring_count
= tpd_ring
->count
;
875 for (index
= 0; index
< ring_count
; index
++) {
876 buffer_info
= &tpd_ring
->buffer_info
[index
];
877 atl1c_clean_buffer(pdev
, buffer_info
);
880 netdev_reset_queue(adapter
->netdev
);
882 /* Zero out Tx-buffers */
883 memset(tpd_ring
->desc
, 0, sizeof(struct atl1c_tpd_desc
) *
885 atomic_set(&tpd_ring
->next_to_clean
, 0);
886 tpd_ring
->next_to_use
= 0;
890 * atl1c_clean_rx_ring - Free rx-reservation skbs
891 * @adapter: board private structure
893 static void atl1c_clean_rx_ring(struct atl1c_adapter
*adapter
)
895 struct atl1c_rfd_ring
*rfd_ring
= &adapter
->rfd_ring
;
896 struct atl1c_rrd_ring
*rrd_ring
= &adapter
->rrd_ring
;
897 struct atl1c_buffer
*buffer_info
;
898 struct pci_dev
*pdev
= adapter
->pdev
;
901 for (j
= 0; j
< rfd_ring
->count
; j
++) {
902 buffer_info
= &rfd_ring
->buffer_info
[j
];
903 atl1c_clean_buffer(pdev
, buffer_info
);
905 /* zero out the descriptor ring */
906 memset(rfd_ring
->desc
, 0, rfd_ring
->size
);
907 rfd_ring
->next_to_clean
= 0;
908 rfd_ring
->next_to_use
= 0;
909 rrd_ring
->next_to_use
= 0;
910 rrd_ring
->next_to_clean
= 0;
914 * Read / Write Ptr Initialize:
916 static void atl1c_init_ring_ptrs(struct atl1c_adapter
*adapter
)
918 struct atl1c_tpd_ring
*tpd_ring
= adapter
->tpd_ring
;
919 struct atl1c_rfd_ring
*rfd_ring
= &adapter
->rfd_ring
;
920 struct atl1c_rrd_ring
*rrd_ring
= &adapter
->rrd_ring
;
921 struct atl1c_buffer
*buffer_info
;
924 for (i
= 0; i
< AT_MAX_TRANSMIT_QUEUE
; i
++) {
925 tpd_ring
[i
].next_to_use
= 0;
926 atomic_set(&tpd_ring
[i
].next_to_clean
, 0);
927 buffer_info
= tpd_ring
[i
].buffer_info
;
928 for (j
= 0; j
< tpd_ring
->count
; j
++)
929 ATL1C_SET_BUFFER_STATE(&buffer_info
[i
],
932 rfd_ring
->next_to_use
= 0;
933 rfd_ring
->next_to_clean
= 0;
934 rrd_ring
->next_to_use
= 0;
935 rrd_ring
->next_to_clean
= 0;
936 for (j
= 0; j
< rfd_ring
->count
; j
++) {
937 buffer_info
= &rfd_ring
->buffer_info
[j
];
938 ATL1C_SET_BUFFER_STATE(buffer_info
, ATL1C_BUFFER_FREE
);
943 * atl1c_free_ring_resources - Free Tx / RX descriptor Resources
944 * @adapter: board private structure
946 * Free all transmit software resources
948 static void atl1c_free_ring_resources(struct atl1c_adapter
*adapter
)
950 struct pci_dev
*pdev
= adapter
->pdev
;
952 pci_free_consistent(pdev
, adapter
->ring_header
.size
,
953 adapter
->ring_header
.desc
,
954 adapter
->ring_header
.dma
);
955 adapter
->ring_header
.desc
= NULL
;
957 /* Note: just free tdp_ring.buffer_info,
958 * it contain rfd_ring.buffer_info, do not double free */
959 if (adapter
->tpd_ring
[0].buffer_info
) {
960 kfree(adapter
->tpd_ring
[0].buffer_info
);
961 adapter
->tpd_ring
[0].buffer_info
= NULL
;
963 if (adapter
->rx_page
) {
964 put_page(adapter
->rx_page
);
965 adapter
->rx_page
= NULL
;
970 * atl1c_setup_mem_resources - allocate Tx / RX descriptor resources
971 * @adapter: board private structure
973 * Return 0 on success, negative on failure
975 static int atl1c_setup_ring_resources(struct atl1c_adapter
*adapter
)
977 struct pci_dev
*pdev
= adapter
->pdev
;
978 struct atl1c_tpd_ring
*tpd_ring
= adapter
->tpd_ring
;
979 struct atl1c_rfd_ring
*rfd_ring
= &adapter
->rfd_ring
;
980 struct atl1c_rrd_ring
*rrd_ring
= &adapter
->rrd_ring
;
981 struct atl1c_ring_header
*ring_header
= &adapter
->ring_header
;
985 int rx_desc_count
= 0;
988 rrd_ring
->count
= rfd_ring
->count
;
989 for (i
= 1; i
< AT_MAX_TRANSMIT_QUEUE
; i
++)
990 tpd_ring
[i
].count
= tpd_ring
[0].count
;
992 /* 2 tpd queue, one high priority queue,
993 * another normal priority queue */
994 size
= sizeof(struct atl1c_buffer
) * (tpd_ring
->count
* 2 +
996 tpd_ring
->buffer_info
= kzalloc(size
, GFP_KERNEL
);
997 if (unlikely(!tpd_ring
->buffer_info
))
1000 for (i
= 0; i
< AT_MAX_TRANSMIT_QUEUE
; i
++) {
1001 tpd_ring
[i
].buffer_info
=
1002 (tpd_ring
->buffer_info
+ count
);
1003 count
+= tpd_ring
[i
].count
;
1006 rfd_ring
->buffer_info
=
1007 (tpd_ring
->buffer_info
+ count
);
1008 count
+= rfd_ring
->count
;
1009 rx_desc_count
+= rfd_ring
->count
;
1012 * real ring DMA buffer
1013 * each ring/block may need up to 8 bytes for alignment, hence the
1014 * additional bytes tacked onto the end.
1016 ring_header
->size
= size
=
1017 sizeof(struct atl1c_tpd_desc
) * tpd_ring
->count
* 2 +
1018 sizeof(struct atl1c_rx_free_desc
) * rx_desc_count
+
1019 sizeof(struct atl1c_recv_ret_status
) * rx_desc_count
+
1022 ring_header
->desc
= dma_zalloc_coherent(&pdev
->dev
, ring_header
->size
,
1023 &ring_header
->dma
, GFP_KERNEL
);
1024 if (unlikely(!ring_header
->desc
)) {
1025 dev_err(&pdev
->dev
, "could not get memory for DMA buffer\n");
1030 tpd_ring
[0].dma
= roundup(ring_header
->dma
, 8);
1031 offset
= tpd_ring
[0].dma
- ring_header
->dma
;
1032 for (i
= 0; i
< AT_MAX_TRANSMIT_QUEUE
; i
++) {
1033 tpd_ring
[i
].dma
= ring_header
->dma
+ offset
;
1034 tpd_ring
[i
].desc
= (u8
*) ring_header
->desc
+ offset
;
1036 sizeof(struct atl1c_tpd_desc
) * tpd_ring
[i
].count
;
1037 offset
+= roundup(tpd_ring
[i
].size
, 8);
1040 rfd_ring
->dma
= ring_header
->dma
+ offset
;
1041 rfd_ring
->desc
= (u8
*) ring_header
->desc
+ offset
;
1042 rfd_ring
->size
= sizeof(struct atl1c_rx_free_desc
) * rfd_ring
->count
;
1043 offset
+= roundup(rfd_ring
->size
, 8);
1046 rrd_ring
->dma
= ring_header
->dma
+ offset
;
1047 rrd_ring
->desc
= (u8
*) ring_header
->desc
+ offset
;
1048 rrd_ring
->size
= sizeof(struct atl1c_recv_ret_status
) *
1050 offset
+= roundup(rrd_ring
->size
, 8);
1055 kfree(tpd_ring
->buffer_info
);
1059 static void atl1c_configure_des_ring(struct atl1c_adapter
*adapter
)
1061 struct atl1c_hw
*hw
= &adapter
->hw
;
1062 struct atl1c_rfd_ring
*rfd_ring
= &adapter
->rfd_ring
;
1063 struct atl1c_rrd_ring
*rrd_ring
= &adapter
->rrd_ring
;
1064 struct atl1c_tpd_ring
*tpd_ring
= (struct atl1c_tpd_ring
*)
1068 AT_WRITE_REG(hw
, REG_TX_BASE_ADDR_HI
,
1069 (u32
)((tpd_ring
[atl1c_trans_normal
].dma
&
1070 AT_DMA_HI_ADDR_MASK
) >> 32));
1071 /* just enable normal priority TX queue */
1072 AT_WRITE_REG(hw
, REG_TPD_PRI0_ADDR_LO
,
1073 (u32
)(tpd_ring
[atl1c_trans_normal
].dma
&
1074 AT_DMA_LO_ADDR_MASK
));
1075 AT_WRITE_REG(hw
, REG_TPD_PRI1_ADDR_LO
,
1076 (u32
)(tpd_ring
[atl1c_trans_high
].dma
&
1077 AT_DMA_LO_ADDR_MASK
));
1078 AT_WRITE_REG(hw
, REG_TPD_RING_SIZE
,
1079 (u32
)(tpd_ring
[0].count
& TPD_RING_SIZE_MASK
));
1083 AT_WRITE_REG(hw
, REG_RX_BASE_ADDR_HI
,
1084 (u32
)((rfd_ring
->dma
& AT_DMA_HI_ADDR_MASK
) >> 32));
1085 AT_WRITE_REG(hw
, REG_RFD0_HEAD_ADDR_LO
,
1086 (u32
)(rfd_ring
->dma
& AT_DMA_LO_ADDR_MASK
));
1088 AT_WRITE_REG(hw
, REG_RFD_RING_SIZE
,
1089 rfd_ring
->count
& RFD_RING_SIZE_MASK
);
1090 AT_WRITE_REG(hw
, REG_RX_BUF_SIZE
,
1091 adapter
->rx_buffer_len
& RX_BUF_SIZE_MASK
);
1094 AT_WRITE_REG(hw
, REG_RRD0_HEAD_ADDR_LO
,
1095 (u32
)(rrd_ring
->dma
& AT_DMA_LO_ADDR_MASK
));
1096 AT_WRITE_REG(hw
, REG_RRD_RING_SIZE
,
1097 (rrd_ring
->count
& RRD_RING_SIZE_MASK
));
1099 if (hw
->nic_type
== athr_l2c_b
) {
1100 AT_WRITE_REG(hw
, REG_SRAM_RXF_LEN
, 0x02a0L
);
1101 AT_WRITE_REG(hw
, REG_SRAM_TXF_LEN
, 0x0100L
);
1102 AT_WRITE_REG(hw
, REG_SRAM_RXF_ADDR
, 0x029f0000L
);
1103 AT_WRITE_REG(hw
, REG_SRAM_RFD0_INFO
, 0x02bf02a0L
);
1104 AT_WRITE_REG(hw
, REG_SRAM_TXF_ADDR
, 0x03bf02c0L
);
1105 AT_WRITE_REG(hw
, REG_SRAM_TRD_ADDR
, 0x03df03c0L
);
1106 AT_WRITE_REG(hw
, REG_TXF_WATER_MARK
, 0); /* TX watermark, to enter l1 state.*/
1107 AT_WRITE_REG(hw
, REG_RXD_DMA_CTRL
, 0); /* RXD threshold.*/
1109 /* Load all of base address above */
1110 AT_WRITE_REG(hw
, REG_LOAD_PTR
, 1);
1113 static void atl1c_configure_tx(struct atl1c_adapter
*adapter
)
1115 struct atl1c_hw
*hw
= &adapter
->hw
;
1117 u16 tx_offload_thresh
;
1120 tx_offload_thresh
= MAX_TSO_FRAME_SIZE
;
1121 AT_WRITE_REG(hw
, REG_TX_TSO_OFFLOAD_THRESH
,
1122 (tx_offload_thresh
>> 3) & TX_TSO_OFFLOAD_THRESH_MASK
);
1123 max_pay_load
= pcie_get_readrq(adapter
->pdev
) >> 8;
1124 hw
->dmar_block
= min_t(u32
, max_pay_load
, hw
->dmar_block
);
1126 * if BIOS had changed the dam-read-max-length to an invalid value,
1127 * restore it to default value
1129 if (hw
->dmar_block
< DEVICE_CTRL_MAXRRS_MIN
) {
1130 pcie_set_readrq(adapter
->pdev
, 128 << DEVICE_CTRL_MAXRRS_MIN
);
1131 hw
->dmar_block
= DEVICE_CTRL_MAXRRS_MIN
;
1134 hw
->nic_type
== athr_l2c_b
|| hw
->nic_type
== athr_l2c_b2
?
1135 L2CB_TXQ_CFGV
: L1C_TXQ_CFGV
;
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
;
1151 /* aspm for gigabit */
1152 if (hw
->nic_type
!= athr_l1d_2
&& (hw
->device_id
& 1) != 0)
1153 rxq_ctrl_data
= FIELD_SETX(rxq_ctrl_data
, ASPM_THRUPUT_LIMIT
,
1154 ASPM_THRUPUT_LIMIT_100M
);
1156 AT_WRITE_REG(hw
, REG_RXQ_CTRL
, rxq_ctrl_data
);
1159 static void atl1c_configure_dma(struct atl1c_adapter
*adapter
)
1161 struct atl1c_hw
*hw
= &adapter
->hw
;
1164 dma_ctrl_data
= FIELDX(DMA_CTRL_RORDER_MODE
, DMA_CTRL_RORDER_MODE_OUT
) |
1165 DMA_CTRL_RREQ_PRI_DATA
|
1166 FIELDX(DMA_CTRL_RREQ_BLEN
, hw
->dmar_block
) |
1167 FIELDX(DMA_CTRL_WDLY_CNT
, DMA_CTRL_WDLY_CNT_DEF
) |
1168 FIELDX(DMA_CTRL_RDLY_CNT
, DMA_CTRL_RDLY_CNT_DEF
);
1170 AT_WRITE_REG(hw
, REG_DMA_CTRL
, dma_ctrl_data
);
1174 * Stop the mac, transmit and receive units
1175 * hw - Struct containing variables accessed by shared code
1176 * return : 0 or idle status (if error)
1178 static int atl1c_stop_mac(struct atl1c_hw
*hw
)
1182 AT_READ_REG(hw
, REG_RXQ_CTRL
, &data
);
1183 data
&= ~RXQ_CTRL_EN
;
1184 AT_WRITE_REG(hw
, REG_RXQ_CTRL
, data
);
1186 AT_READ_REG(hw
, REG_TXQ_CTRL
, &data
);
1187 data
&= ~TXQ_CTRL_EN
;
1188 AT_WRITE_REG(hw
, REG_TXQ_CTRL
, data
);
1190 atl1c_wait_until_idle(hw
, IDLE_STATUS_RXQ_BUSY
| IDLE_STATUS_TXQ_BUSY
);
1192 AT_READ_REG(hw
, REG_MAC_CTRL
, &data
);
1193 data
&= ~(MAC_CTRL_TX_EN
| MAC_CTRL_RX_EN
);
1194 AT_WRITE_REG(hw
, REG_MAC_CTRL
, data
);
1196 return (int)atl1c_wait_until_idle(hw
,
1197 IDLE_STATUS_TXMAC_BUSY
| IDLE_STATUS_RXMAC_BUSY
);
1200 static void atl1c_start_mac(struct atl1c_adapter
*adapter
)
1202 struct atl1c_hw
*hw
= &adapter
->hw
;
1205 hw
->mac_duplex
= adapter
->link_duplex
== FULL_DUPLEX
? true : false;
1206 hw
->mac_speed
= adapter
->link_speed
== SPEED_1000
?
1207 atl1c_mac_speed_1000
: atl1c_mac_speed_10_100
;
1209 AT_READ_REG(hw
, REG_TXQ_CTRL
, &txq
);
1210 AT_READ_REG(hw
, REG_RXQ_CTRL
, &rxq
);
1211 AT_READ_REG(hw
, REG_MAC_CTRL
, &mac
);
1215 mac
|= MAC_CTRL_TX_EN
| MAC_CTRL_TX_FLOW
|
1216 MAC_CTRL_RX_EN
| MAC_CTRL_RX_FLOW
|
1217 MAC_CTRL_ADD_CRC
| MAC_CTRL_PAD
|
1218 MAC_CTRL_BC_EN
| MAC_CTRL_SINGLE_PAUSE_EN
|
1219 MAC_CTRL_HASH_ALG_CRC32
;
1221 mac
|= MAC_CTRL_DUPLX
;
1223 mac
&= ~MAC_CTRL_DUPLX
;
1224 mac
= FIELD_SETX(mac
, MAC_CTRL_SPEED
, hw
->mac_speed
);
1225 mac
= FIELD_SETX(mac
, MAC_CTRL_PRMLEN
, hw
->preamble_len
);
1227 AT_WRITE_REG(hw
, REG_TXQ_CTRL
, txq
);
1228 AT_WRITE_REG(hw
, REG_RXQ_CTRL
, rxq
);
1229 AT_WRITE_REG(hw
, REG_MAC_CTRL
, mac
);
1233 * Reset the transmit and receive units; mask and clear all interrupts.
1234 * hw - Struct containing variables accessed by shared code
1235 * return : 0 or idle status (if error)
1237 static int atl1c_reset_mac(struct atl1c_hw
*hw
)
1239 struct atl1c_adapter
*adapter
= hw
->adapter
;
1240 struct pci_dev
*pdev
= adapter
->pdev
;
1245 * Issue Soft Reset to the MAC. This will reset the chip's
1246 * transmit, receive, DMA. It will not effect
1247 * the current PCI configuration. The global reset bit is self-
1248 * clearing, and should clear within a microsecond.
1250 AT_READ_REG(hw
, REG_MASTER_CTRL
, &ctrl_data
);
1251 ctrl_data
|= MASTER_CTRL_OOB_DIS
;
1252 AT_WRITE_REG(hw
, REG_MASTER_CTRL
, ctrl_data
| MASTER_CTRL_SOFT_RST
);
1256 /* Wait at least 10ms for All module to be Idle */
1258 if (atl1c_wait_until_idle(hw
, IDLE_STATUS_MASK
)) {
1260 "MAC state machine can't be idle since"
1261 " disabled for 10ms second\n");
1264 AT_WRITE_REG(hw
, REG_MASTER_CTRL
, ctrl_data
);
1266 /* driver control speed/duplex */
1267 AT_READ_REG(hw
, REG_MAC_CTRL
, &ctrl_data
);
1268 AT_WRITE_REG(hw
, REG_MAC_CTRL
, ctrl_data
| MAC_CTRL_SPEED_MODE_SW
);
1270 /* clk switch setting */
1271 AT_READ_REG(hw
, REG_SERDES
, &ctrl_data
);
1272 switch (hw
->nic_type
) {
1274 ctrl_data
&= ~(SERDES_PHY_CLK_SLOWDOWN
|
1275 SERDES_MAC_CLK_SLOWDOWN
);
1276 AT_WRITE_REG(hw
, REG_SERDES
, ctrl_data
);
1280 ctrl_data
|= SERDES_PHY_CLK_SLOWDOWN
| SERDES_MAC_CLK_SLOWDOWN
;
1281 AT_WRITE_REG(hw
, REG_SERDES
, ctrl_data
);
1290 static void atl1c_disable_l0s_l1(struct atl1c_hw
*hw
)
1292 u16 ctrl_flags
= hw
->ctrl_flags
;
1294 hw
->ctrl_flags
&= ~(ATL1C_ASPM_L0S_SUPPORT
| ATL1C_ASPM_L1_SUPPORT
);
1295 atl1c_set_aspm(hw
, SPEED_0
);
1296 hw
->ctrl_flags
= ctrl_flags
;
1301 * Enable/disable L0s/L1 depend on link state.
1303 static void atl1c_set_aspm(struct atl1c_hw
*hw
, u16 link_speed
)
1308 AT_READ_REG(hw
, REG_PM_CTRL
, &pm_ctrl_data
);
1309 pm_ctrl_data
&= ~(PM_CTRL_ASPM_L1_EN
|
1310 PM_CTRL_ASPM_L0S_EN
|
1311 PM_CTRL_MAC_ASPM_CHK
);
1313 if (hw
->nic_type
== athr_l2c_b2
|| hw
->nic_type
== athr_l1d_2
) {
1314 pm_ctrl_data
&= ~PMCTRL_TXL1_AFTER_L0S
;
1316 link_speed
== SPEED_1000
|| link_speed
== SPEED_100
?
1317 L1D_PMCTRL_L1_ENTRY_TM_16US
: 1;
1318 pm_ctrl_data
= FIELD_SETX(pm_ctrl_data
,
1319 L1D_PMCTRL_L1_ENTRY_TM
, link_l1_timer
);
1321 link_l1_timer
= hw
->nic_type
== athr_l2c_b
?
1322 L2CB1_PM_CTRL_L1_ENTRY_TM
: L1C_PM_CTRL_L1_ENTRY_TM
;
1323 if (link_speed
!= SPEED_1000
&& link_speed
!= SPEED_100
)
1325 pm_ctrl_data
= FIELD_SETX(pm_ctrl_data
,
1326 PM_CTRL_L1_ENTRY_TIMER
, link_l1_timer
);
1330 if ((hw
->ctrl_flags
& ATL1C_ASPM_L0S_SUPPORT
) && link_speed
!= SPEED_0
)
1331 pm_ctrl_data
|= PM_CTRL_ASPM_L0S_EN
| PM_CTRL_MAC_ASPM_CHK
;
1332 if (hw
->ctrl_flags
& ATL1C_ASPM_L1_SUPPORT
)
1333 pm_ctrl_data
|= PM_CTRL_ASPM_L1_EN
| PM_CTRL_MAC_ASPM_CHK
;
1335 /* l2cb & l1d & l2cb2 & l1d2 */
1336 if (hw
->nic_type
== athr_l2c_b
|| hw
->nic_type
== athr_l1d
||
1337 hw
->nic_type
== athr_l2c_b2
|| hw
->nic_type
== athr_l1d_2
) {
1338 pm_ctrl_data
= FIELD_SETX(pm_ctrl_data
,
1339 PM_CTRL_PM_REQ_TIMER
, PM_CTRL_PM_REQ_TO_DEF
);
1340 pm_ctrl_data
|= PM_CTRL_RCVR_WT_TIMER
|
1341 PM_CTRL_SERDES_PD_EX_L1
|
1343 pm_ctrl_data
&= ~(PM_CTRL_SERDES_L1_EN
|
1344 PM_CTRL_SERDES_PLL_L1_EN
|
1345 PM_CTRL_SERDES_BUFS_RX_L1_EN
|
1348 /* disable l0s if link down or l2cb */
1349 if (link_speed
== SPEED_0
|| hw
->nic_type
== athr_l2c_b
)
1350 pm_ctrl_data
&= ~PM_CTRL_ASPM_L0S_EN
;
1353 FIELD_SETX(pm_ctrl_data
, PM_CTRL_L1_ENTRY_TIMER
, 0);
1354 if (link_speed
!= SPEED_0
) {
1355 pm_ctrl_data
|= PM_CTRL_SERDES_L1_EN
|
1356 PM_CTRL_SERDES_PLL_L1_EN
|
1357 PM_CTRL_SERDES_BUFS_RX_L1_EN
;
1358 pm_ctrl_data
&= ~(PM_CTRL_SERDES_PD_EX_L1
|
1359 PM_CTRL_CLK_SWH_L1
|
1360 PM_CTRL_ASPM_L0S_EN
|
1361 PM_CTRL_ASPM_L1_EN
);
1362 } else { /* link down */
1363 pm_ctrl_data
|= PM_CTRL_CLK_SWH_L1
;
1364 pm_ctrl_data
&= ~(PM_CTRL_SERDES_L1_EN
|
1365 PM_CTRL_SERDES_PLL_L1_EN
|
1366 PM_CTRL_SERDES_BUFS_RX_L1_EN
|
1367 PM_CTRL_ASPM_L0S_EN
);
1370 AT_WRITE_REG(hw
, REG_PM_CTRL
, pm_ctrl_data
);
1376 * atl1c_configure - Configure Transmit&Receive Unit after Reset
1377 * @adapter: board private structure
1379 * Configure the Tx /Rx unit of the MAC after a reset.
1381 static int atl1c_configure_mac(struct atl1c_adapter
*adapter
)
1383 struct atl1c_hw
*hw
= &adapter
->hw
;
1384 u32 master_ctrl_data
= 0;
1385 u32 intr_modrt_data
;
1388 AT_READ_REG(hw
, REG_MASTER_CTRL
, &master_ctrl_data
);
1389 master_ctrl_data
&= ~(MASTER_CTRL_TX_ITIMER_EN
|
1390 MASTER_CTRL_RX_ITIMER_EN
|
1391 MASTER_CTRL_INT_RDCLR
);
1392 /* clear interrupt status */
1393 AT_WRITE_REG(hw
, REG_ISR
, 0xFFFFFFFF);
1394 /* Clear any WOL status */
1395 AT_WRITE_REG(hw
, REG_WOL_CTRL
, 0);
1396 /* set Interrupt Clear Timer
1397 * HW will enable self to assert interrupt event to system after
1398 * waiting x-time for software to notify it accept interrupt.
1401 data
= CLK_GATING_EN_ALL
;
1402 if (hw
->ctrl_flags
& ATL1C_CLK_GATING_EN
) {
1403 if (hw
->nic_type
== athr_l2c_b
)
1404 data
&= ~CLK_GATING_RXMAC_EN
;
1407 AT_WRITE_REG(hw
, REG_CLK_GATING_CTRL
, data
);
1409 AT_WRITE_REG(hw
, REG_INT_RETRIG_TIMER
,
1410 hw
->ict
& INT_RETRIG_TIMER_MASK
);
1412 atl1c_configure_des_ring(adapter
);
1414 if (hw
->ctrl_flags
& ATL1C_INTR_MODRT_ENABLE
) {
1415 intr_modrt_data
= (hw
->tx_imt
& IRQ_MODRT_TIMER_MASK
) <<
1416 IRQ_MODRT_TX_TIMER_SHIFT
;
1417 intr_modrt_data
|= (hw
->rx_imt
& IRQ_MODRT_TIMER_MASK
) <<
1418 IRQ_MODRT_RX_TIMER_SHIFT
;
1419 AT_WRITE_REG(hw
, REG_IRQ_MODRT_TIMER_INIT
, intr_modrt_data
);
1421 MASTER_CTRL_TX_ITIMER_EN
| MASTER_CTRL_RX_ITIMER_EN
;
1424 if (hw
->ctrl_flags
& ATL1C_INTR_CLEAR_ON_READ
)
1425 master_ctrl_data
|= MASTER_CTRL_INT_RDCLR
;
1427 master_ctrl_data
|= MASTER_CTRL_SA_TIMER_EN
;
1428 AT_WRITE_REG(hw
, REG_MASTER_CTRL
, master_ctrl_data
);
1430 AT_WRITE_REG(hw
, REG_SMB_STAT_TIMER
,
1431 hw
->smb_timer
& SMB_STAT_TIMER_MASK
);
1434 AT_WRITE_REG(hw
, REG_MTU
, hw
->max_frame_size
+ ETH_HLEN
+
1435 VLAN_HLEN
+ ETH_FCS_LEN
);
1437 atl1c_configure_tx(adapter
);
1438 atl1c_configure_rx(adapter
);
1439 atl1c_configure_dma(adapter
);
1444 static int atl1c_configure(struct atl1c_adapter
*adapter
)
1446 struct net_device
*netdev
= adapter
->netdev
;
1449 atl1c_init_ring_ptrs(adapter
);
1450 atl1c_set_multi(netdev
);
1451 atl1c_restore_vlan(adapter
);
1453 num
= atl1c_alloc_rx_buffer(adapter
);
1454 if (unlikely(num
== 0))
1457 if (atl1c_configure_mac(adapter
))
1463 static void atl1c_update_hw_stats(struct atl1c_adapter
*adapter
)
1465 u16 hw_reg_addr
= 0;
1466 unsigned long *stats_item
= NULL
;
1469 /* update rx status */
1470 hw_reg_addr
= REG_MAC_RX_STATUS_BIN
;
1471 stats_item
= &adapter
->hw_stats
.rx_ok
;
1472 while (hw_reg_addr
<= REG_MAC_RX_STATUS_END
) {
1473 AT_READ_REG(&adapter
->hw
, hw_reg_addr
, &data
);
1474 *stats_item
+= data
;
1478 /* update tx status */
1479 hw_reg_addr
= REG_MAC_TX_STATUS_BIN
;
1480 stats_item
= &adapter
->hw_stats
.tx_ok
;
1481 while (hw_reg_addr
<= REG_MAC_TX_STATUS_END
) {
1482 AT_READ_REG(&adapter
->hw
, hw_reg_addr
, &data
);
1483 *stats_item
+= data
;
1490 * atl1c_get_stats - Get System Network Statistics
1491 * @netdev: network interface device structure
1493 * Returns the address of the device statistics structure.
1494 * The statistics are actually updated from the timer callback.
1496 static struct net_device_stats
*atl1c_get_stats(struct net_device
*netdev
)
1498 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
1499 struct atl1c_hw_stats
*hw_stats
= &adapter
->hw_stats
;
1500 struct net_device_stats
*net_stats
= &netdev
->stats
;
1502 atl1c_update_hw_stats(adapter
);
1503 net_stats
->rx_bytes
= hw_stats
->rx_byte_cnt
;
1504 net_stats
->tx_bytes
= hw_stats
->tx_byte_cnt
;
1505 net_stats
->multicast
= hw_stats
->rx_mcast
;
1506 net_stats
->collisions
= hw_stats
->tx_1_col
+
1507 hw_stats
->tx_2_col
+
1508 hw_stats
->tx_late_col
+
1509 hw_stats
->tx_abort_col
;
1511 net_stats
->rx_errors
= hw_stats
->rx_frag
+
1512 hw_stats
->rx_fcs_err
+
1513 hw_stats
->rx_len_err
+
1514 hw_stats
->rx_sz_ov
+
1515 hw_stats
->rx_rrd_ov
+
1516 hw_stats
->rx_align_err
+
1517 hw_stats
->rx_rxf_ov
;
1519 net_stats
->rx_fifo_errors
= hw_stats
->rx_rxf_ov
;
1520 net_stats
->rx_length_errors
= hw_stats
->rx_len_err
;
1521 net_stats
->rx_crc_errors
= hw_stats
->rx_fcs_err
;
1522 net_stats
->rx_frame_errors
= hw_stats
->rx_align_err
;
1523 net_stats
->rx_dropped
= hw_stats
->rx_rrd_ov
;
1525 net_stats
->tx_errors
= hw_stats
->tx_late_col
+
1526 hw_stats
->tx_abort_col
+
1527 hw_stats
->tx_underrun
+
1530 net_stats
->tx_fifo_errors
= hw_stats
->tx_underrun
;
1531 net_stats
->tx_aborted_errors
= hw_stats
->tx_abort_col
;
1532 net_stats
->tx_window_errors
= hw_stats
->tx_late_col
;
1534 net_stats
->rx_packets
= hw_stats
->rx_ok
+ net_stats
->rx_errors
;
1535 net_stats
->tx_packets
= hw_stats
->tx_ok
+ net_stats
->tx_errors
;
1540 static inline void atl1c_clear_phy_int(struct atl1c_adapter
*adapter
)
1544 spin_lock(&adapter
->mdio_lock
);
1545 atl1c_read_phy_reg(&adapter
->hw
, MII_ISR
, &phy_data
);
1546 spin_unlock(&adapter
->mdio_lock
);
1549 static bool atl1c_clean_tx_irq(struct atl1c_adapter
*adapter
,
1550 enum atl1c_trans_queue type
)
1552 struct atl1c_tpd_ring
*tpd_ring
= &adapter
->tpd_ring
[type
];
1553 struct atl1c_buffer
*buffer_info
;
1554 struct pci_dev
*pdev
= adapter
->pdev
;
1555 u16 next_to_clean
= atomic_read(&tpd_ring
->next_to_clean
);
1556 u16 hw_next_to_clean
;
1558 unsigned int total_bytes
= 0, total_packets
= 0;
1560 reg
= type
== atl1c_trans_high
? REG_TPD_PRI1_CIDX
: REG_TPD_PRI0_CIDX
;
1562 AT_READ_REGW(&adapter
->hw
, reg
, &hw_next_to_clean
);
1564 while (next_to_clean
!= hw_next_to_clean
) {
1565 buffer_info
= &tpd_ring
->buffer_info
[next_to_clean
];
1566 if (buffer_info
->skb
) {
1567 total_bytes
+= buffer_info
->skb
->len
;
1570 atl1c_clean_buffer(pdev
, buffer_info
);
1571 if (++next_to_clean
== tpd_ring
->count
)
1573 atomic_set(&tpd_ring
->next_to_clean
, next_to_clean
);
1576 netdev_completed_queue(adapter
->netdev
, total_packets
, total_bytes
);
1578 if (netif_queue_stopped(adapter
->netdev
) &&
1579 netif_carrier_ok(adapter
->netdev
)) {
1580 netif_wake_queue(adapter
->netdev
);
1587 * atl1c_intr - Interrupt Handler
1588 * @irq: interrupt number
1589 * @data: pointer to a network interface device structure
1591 static irqreturn_t
atl1c_intr(int irq
, void *data
)
1593 struct net_device
*netdev
= data
;
1594 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
1595 struct pci_dev
*pdev
= adapter
->pdev
;
1596 struct atl1c_hw
*hw
= &adapter
->hw
;
1597 int max_ints
= AT_MAX_INT_WORK
;
1598 int handled
= IRQ_NONE
;
1603 AT_READ_REG(hw
, REG_ISR
, ®_data
);
1604 status
= reg_data
& hw
->intr_mask
;
1606 if (status
== 0 || (status
& ISR_DIS_INT
) != 0) {
1607 if (max_ints
!= AT_MAX_INT_WORK
)
1608 handled
= IRQ_HANDLED
;
1612 if (status
& ISR_GPHY
)
1613 atl1c_clear_phy_int(adapter
);
1615 AT_WRITE_REG(hw
, REG_ISR
, status
| ISR_DIS_INT
);
1616 if (status
& ISR_RX_PKT
) {
1617 if (likely(napi_schedule_prep(&adapter
->napi
))) {
1618 hw
->intr_mask
&= ~ISR_RX_PKT
;
1619 AT_WRITE_REG(hw
, REG_IMR
, hw
->intr_mask
);
1620 __napi_schedule(&adapter
->napi
);
1623 if (status
& ISR_TX_PKT
)
1624 atl1c_clean_tx_irq(adapter
, atl1c_trans_normal
);
1626 handled
= IRQ_HANDLED
;
1627 /* check if PCIE PHY Link down */
1628 if (status
& ISR_ERROR
) {
1629 if (netif_msg_hw(adapter
))
1631 "atl1c hardware error (status = 0x%x)\n",
1632 status
& ISR_ERROR
);
1634 set_bit(ATL1C_WORK_EVENT_RESET
, &adapter
->work_event
);
1635 schedule_work(&adapter
->common_task
);
1639 if (status
& ISR_OVER
)
1640 if (netif_msg_intr(adapter
))
1641 dev_warn(&pdev
->dev
,
1642 "TX/RX overflow (status = 0x%x)\n",
1646 if (status
& (ISR_GPHY
| ISR_MANUAL
)) {
1647 netdev
->stats
.tx_carrier_errors
++;
1648 atl1c_link_chg_event(adapter
);
1652 } while (--max_ints
> 0);
1653 /* re-enable Interrupt*/
1654 AT_WRITE_REG(&adapter
->hw
, REG_ISR
, 0);
1658 static inline void atl1c_rx_checksum(struct atl1c_adapter
*adapter
,
1659 struct sk_buff
*skb
, struct atl1c_recv_ret_status
*prrs
)
1662 * The pid field in RRS in not correct sometimes, so we
1663 * cannot figure out if the packet is fragmented or not,
1664 * so we tell the KERNEL CHECKSUM_NONE
1666 skb_checksum_none_assert(skb
);
1669 static struct sk_buff
*atl1c_alloc_skb(struct atl1c_adapter
*adapter
)
1671 struct sk_buff
*skb
;
1674 if (adapter
->rx_frag_size
> PAGE_SIZE
)
1675 return netdev_alloc_skb(adapter
->netdev
,
1676 adapter
->rx_buffer_len
);
1678 page
= adapter
->rx_page
;
1680 adapter
->rx_page
= page
= alloc_page(GFP_ATOMIC
);
1681 if (unlikely(!page
))
1683 adapter
->rx_page_offset
= 0;
1686 skb
= build_skb(page_address(page
) + adapter
->rx_page_offset
,
1687 adapter
->rx_frag_size
);
1689 skb_reserve(skb
, NET_SKB_PAD
);
1690 adapter
->rx_page_offset
+= adapter
->rx_frag_size
;
1691 if (adapter
->rx_page_offset
>= PAGE_SIZE
)
1692 adapter
->rx_page
= NULL
;
1699 static int atl1c_alloc_rx_buffer(struct atl1c_adapter
*adapter
)
1701 struct atl1c_rfd_ring
*rfd_ring
= &adapter
->rfd_ring
;
1702 struct pci_dev
*pdev
= adapter
->pdev
;
1703 struct atl1c_buffer
*buffer_info
, *next_info
;
1704 struct sk_buff
*skb
;
1705 void *vir_addr
= NULL
;
1707 u16 rfd_next_to_use
, next_next
;
1708 struct atl1c_rx_free_desc
*rfd_desc
;
1711 next_next
= rfd_next_to_use
= rfd_ring
->next_to_use
;
1712 if (++next_next
== rfd_ring
->count
)
1714 buffer_info
= &rfd_ring
->buffer_info
[rfd_next_to_use
];
1715 next_info
= &rfd_ring
->buffer_info
[next_next
];
1717 while (next_info
->flags
& ATL1C_BUFFER_FREE
) {
1718 rfd_desc
= ATL1C_RFD_DESC(rfd_ring
, rfd_next_to_use
);
1720 skb
= atl1c_alloc_skb(adapter
);
1721 if (unlikely(!skb
)) {
1722 if (netif_msg_rx_err(adapter
))
1723 dev_warn(&pdev
->dev
, "alloc rx buffer failed\n");
1728 * Make buffer alignment 2 beyond a 16 byte boundary
1729 * this will result in a 16 byte aligned IP header after
1730 * the 14 byte MAC header is removed
1732 vir_addr
= skb
->data
;
1733 ATL1C_SET_BUFFER_STATE(buffer_info
, ATL1C_BUFFER_BUSY
);
1734 buffer_info
->skb
= skb
;
1735 buffer_info
->length
= adapter
->rx_buffer_len
;
1736 mapping
= pci_map_single(pdev
, vir_addr
,
1737 buffer_info
->length
,
1738 PCI_DMA_FROMDEVICE
);
1739 if (unlikely(pci_dma_mapping_error(pdev
, mapping
))) {
1741 buffer_info
->skb
= NULL
;
1742 buffer_info
->length
= 0;
1743 ATL1C_SET_BUFFER_STATE(buffer_info
, ATL1C_BUFFER_FREE
);
1744 netif_warn(adapter
, rx_err
, adapter
->netdev
, "RX pci_map_single failed");
1747 buffer_info
->dma
= mapping
;
1748 ATL1C_SET_PCIMAP_TYPE(buffer_info
, ATL1C_PCIMAP_SINGLE
,
1749 ATL1C_PCIMAP_FROMDEVICE
);
1750 rfd_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
1751 rfd_next_to_use
= next_next
;
1752 if (++next_next
== rfd_ring
->count
)
1754 buffer_info
= &rfd_ring
->buffer_info
[rfd_next_to_use
];
1755 next_info
= &rfd_ring
->buffer_info
[next_next
];
1760 /* TODO: update mailbox here */
1762 rfd_ring
->next_to_use
= rfd_next_to_use
;
1763 AT_WRITE_REG(&adapter
->hw
, REG_MB_RFD0_PROD_IDX
,
1764 rfd_ring
->next_to_use
& MB_RFDX_PROD_IDX_MASK
);
1770 static void atl1c_clean_rrd(struct atl1c_rrd_ring
*rrd_ring
,
1771 struct atl1c_recv_ret_status
*rrs
, u16 num
)
1774 /* the relationship between rrd and rfd is one map one */
1775 for (i
= 0; i
< num
; i
++, rrs
= ATL1C_RRD_DESC(rrd_ring
,
1776 rrd_ring
->next_to_clean
)) {
1777 rrs
->word3
&= ~RRS_RXD_UPDATED
;
1778 if (++rrd_ring
->next_to_clean
== rrd_ring
->count
)
1779 rrd_ring
->next_to_clean
= 0;
1783 static void atl1c_clean_rfd(struct atl1c_rfd_ring
*rfd_ring
,
1784 struct atl1c_recv_ret_status
*rrs
, u16 num
)
1788 struct atl1c_buffer
*buffer_info
= rfd_ring
->buffer_info
;
1790 rfd_index
= (rrs
->word0
>> RRS_RX_RFD_INDEX_SHIFT
) &
1791 RRS_RX_RFD_INDEX_MASK
;
1792 for (i
= 0; i
< num
; i
++) {
1793 buffer_info
[rfd_index
].skb
= NULL
;
1794 ATL1C_SET_BUFFER_STATE(&buffer_info
[rfd_index
],
1796 if (++rfd_index
== rfd_ring
->count
)
1799 rfd_ring
->next_to_clean
= rfd_index
;
1802 static void atl1c_clean_rx_irq(struct atl1c_adapter
*adapter
,
1803 int *work_done
, int work_to_do
)
1805 u16 rfd_num
, rfd_index
;
1808 struct pci_dev
*pdev
= adapter
->pdev
;
1809 struct net_device
*netdev
= adapter
->netdev
;
1810 struct atl1c_rfd_ring
*rfd_ring
= &adapter
->rfd_ring
;
1811 struct atl1c_rrd_ring
*rrd_ring
= &adapter
->rrd_ring
;
1812 struct sk_buff
*skb
;
1813 struct atl1c_recv_ret_status
*rrs
;
1814 struct atl1c_buffer
*buffer_info
;
1817 if (*work_done
>= work_to_do
)
1819 rrs
= ATL1C_RRD_DESC(rrd_ring
, rrd_ring
->next_to_clean
);
1820 if (likely(RRS_RXD_IS_VALID(rrs
->word3
))) {
1821 rfd_num
= (rrs
->word0
>> RRS_RX_RFD_CNT_SHIFT
) &
1822 RRS_RX_RFD_CNT_MASK
;
1823 if (unlikely(rfd_num
!= 1))
1824 /* TODO support mul rfd*/
1825 if (netif_msg_rx_err(adapter
))
1826 dev_warn(&pdev
->dev
,
1827 "Multi rfd not support yet!\n");
1833 atl1c_clean_rrd(rrd_ring
, rrs
, rfd_num
);
1834 if (rrs
->word3
& (RRS_RX_ERR_SUM
| RRS_802_3_LEN_ERR
)) {
1835 atl1c_clean_rfd(rfd_ring
, rrs
, rfd_num
);
1836 if (netif_msg_rx_err(adapter
))
1837 dev_warn(&pdev
->dev
,
1838 "wrong packet! rrs word3 is %x\n",
1843 length
= le16_to_cpu((rrs
->word3
>> RRS_PKT_SIZE_SHIFT
) &
1846 if (likely(rfd_num
== 1)) {
1847 rfd_index
= (rrs
->word0
>> RRS_RX_RFD_INDEX_SHIFT
) &
1848 RRS_RX_RFD_INDEX_MASK
;
1849 buffer_info
= &rfd_ring
->buffer_info
[rfd_index
];
1850 pci_unmap_single(pdev
, buffer_info
->dma
,
1851 buffer_info
->length
, PCI_DMA_FROMDEVICE
);
1852 skb
= buffer_info
->skb
;
1855 if (netif_msg_rx_err(adapter
))
1856 dev_warn(&pdev
->dev
,
1857 "Multi rfd not support yet!\n");
1860 atl1c_clean_rfd(rfd_ring
, rrs
, rfd_num
);
1861 skb_put(skb
, length
- ETH_FCS_LEN
);
1862 skb
->protocol
= eth_type_trans(skb
, netdev
);
1863 atl1c_rx_checksum(adapter
, skb
, rrs
);
1864 if (rrs
->word3
& RRS_VLAN_INS
) {
1867 AT_TAG_TO_VLAN(rrs
->vlan_tag
, vlan
);
1868 vlan
= le16_to_cpu(vlan
);
1869 __vlan_hwaccel_put_tag(skb
, htons(ETH_P_8021Q
), vlan
);
1871 netif_receive_skb(skb
);
1877 atl1c_alloc_rx_buffer(adapter
);
1881 * atl1c_clean - NAPI Rx polling callback
1883 static int atl1c_clean(struct napi_struct
*napi
, int budget
)
1885 struct atl1c_adapter
*adapter
=
1886 container_of(napi
, struct atl1c_adapter
, napi
);
1889 /* Keep link state information with original netdev */
1890 if (!netif_carrier_ok(adapter
->netdev
))
1892 /* just enable one RXQ */
1893 atl1c_clean_rx_irq(adapter
, &work_done
, budget
);
1895 if (work_done
< budget
) {
1897 napi_complete_done(napi
, work_done
);
1898 adapter
->hw
.intr_mask
|= ISR_RX_PKT
;
1899 AT_WRITE_REG(&adapter
->hw
, REG_IMR
, adapter
->hw
.intr_mask
);
1904 #ifdef CONFIG_NET_POLL_CONTROLLER
1907 * Polling 'interrupt' - used by things like netconsole to send skbs
1908 * without having to re-enable interrupts. It's not called while
1909 * the interrupt routine is executing.
1911 static void atl1c_netpoll(struct net_device
*netdev
)
1913 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
1915 disable_irq(adapter
->pdev
->irq
);
1916 atl1c_intr(adapter
->pdev
->irq
, netdev
);
1917 enable_irq(adapter
->pdev
->irq
);
1921 static inline u16
atl1c_tpd_avail(struct atl1c_adapter
*adapter
, enum atl1c_trans_queue type
)
1923 struct atl1c_tpd_ring
*tpd_ring
= &adapter
->tpd_ring
[type
];
1924 u16 next_to_use
= 0;
1925 u16 next_to_clean
= 0;
1927 next_to_clean
= atomic_read(&tpd_ring
->next_to_clean
);
1928 next_to_use
= tpd_ring
->next_to_use
;
1930 return (u16
)(next_to_clean
> next_to_use
) ?
1931 (next_to_clean
- next_to_use
- 1) :
1932 (tpd_ring
->count
+ next_to_clean
- next_to_use
- 1);
1936 * get next usable tpd
1937 * Note: should call atl1c_tdp_avail to make sure
1938 * there is enough tpd to use
1940 static struct atl1c_tpd_desc
*atl1c_get_tpd(struct atl1c_adapter
*adapter
,
1941 enum atl1c_trans_queue type
)
1943 struct atl1c_tpd_ring
*tpd_ring
= &adapter
->tpd_ring
[type
];
1944 struct atl1c_tpd_desc
*tpd_desc
;
1945 u16 next_to_use
= 0;
1947 next_to_use
= tpd_ring
->next_to_use
;
1948 if (++tpd_ring
->next_to_use
== tpd_ring
->count
)
1949 tpd_ring
->next_to_use
= 0;
1950 tpd_desc
= ATL1C_TPD_DESC(tpd_ring
, next_to_use
);
1951 memset(tpd_desc
, 0, sizeof(struct atl1c_tpd_desc
));
1955 static struct atl1c_buffer
*
1956 atl1c_get_tx_buffer(struct atl1c_adapter
*adapter
, struct atl1c_tpd_desc
*tpd
)
1958 struct atl1c_tpd_ring
*tpd_ring
= adapter
->tpd_ring
;
1960 return &tpd_ring
->buffer_info
[tpd
-
1961 (struct atl1c_tpd_desc
*)tpd_ring
->desc
];
1964 /* Calculate the transmit packet descript needed*/
1965 static u16
atl1c_cal_tpd_req(const struct sk_buff
*skb
)
1968 u16 proto_hdr_len
= 0;
1970 tpd_req
= skb_shinfo(skb
)->nr_frags
+ 1;
1972 if (skb_is_gso(skb
)) {
1973 proto_hdr_len
= skb_transport_offset(skb
) + tcp_hdrlen(skb
);
1974 if (proto_hdr_len
< skb_headlen(skb
))
1976 if (skb_shinfo(skb
)->gso_type
& SKB_GSO_TCPV6
)
1982 static int atl1c_tso_csum(struct atl1c_adapter
*adapter
,
1983 struct sk_buff
*skb
,
1984 struct atl1c_tpd_desc
**tpd
,
1985 enum atl1c_trans_queue type
)
1987 struct pci_dev
*pdev
= adapter
->pdev
;
1988 unsigned short offload_type
;
1992 if (skb_is_gso(skb
)) {
1995 err
= skb_cow_head(skb
, 0);
1999 offload_type
= skb_shinfo(skb
)->gso_type
;
2001 if (offload_type
& SKB_GSO_TCPV4
) {
2002 real_len
= (((unsigned char *)ip_hdr(skb
) - skb
->data
)
2003 + ntohs(ip_hdr(skb
)->tot_len
));
2005 if (real_len
< skb
->len
)
2006 pskb_trim(skb
, real_len
);
2008 hdr_len
= (skb_transport_offset(skb
) + tcp_hdrlen(skb
));
2009 if (unlikely(skb
->len
== hdr_len
)) {
2010 /* only xsum need */
2011 if (netif_msg_tx_queued(adapter
))
2012 dev_warn(&pdev
->dev
,
2013 "IPV4 tso with zero data??\n");
2016 ip_hdr(skb
)->check
= 0;
2017 tcp_hdr(skb
)->check
= ~csum_tcpudp_magic(
2021 (*tpd
)->word1
|= 1 << TPD_IPV4_PACKET_SHIFT
;
2025 if (offload_type
& SKB_GSO_TCPV6
) {
2026 struct atl1c_tpd_ext_desc
*etpd
=
2027 *(struct atl1c_tpd_ext_desc
**)(tpd
);
2029 memset(etpd
, 0, sizeof(struct atl1c_tpd_ext_desc
));
2030 *tpd
= atl1c_get_tpd(adapter
, type
);
2031 ipv6_hdr(skb
)->payload_len
= 0;
2032 /* check payload == 0 byte ? */
2033 hdr_len
= (skb_transport_offset(skb
) + tcp_hdrlen(skb
));
2034 if (unlikely(skb
->len
== hdr_len
)) {
2035 /* only xsum need */
2036 if (netif_msg_tx_queued(adapter
))
2037 dev_warn(&pdev
->dev
,
2038 "IPV6 tso with zero data??\n");
2041 tcp_hdr(skb
)->check
= ~csum_ipv6_magic(
2042 &ipv6_hdr(skb
)->saddr
,
2043 &ipv6_hdr(skb
)->daddr
,
2045 etpd
->word1
|= 1 << TPD_LSO_EN_SHIFT
;
2046 etpd
->word1
|= 1 << TPD_LSO_VER_SHIFT
;
2047 etpd
->pkt_len
= cpu_to_le32(skb
->len
);
2048 (*tpd
)->word1
|= 1 << TPD_LSO_VER_SHIFT
;
2051 (*tpd
)->word1
|= 1 << TPD_LSO_EN_SHIFT
;
2052 (*tpd
)->word1
|= (skb_transport_offset(skb
) & TPD_TCPHDR_OFFSET_MASK
) <<
2053 TPD_TCPHDR_OFFSET_SHIFT
;
2054 (*tpd
)->word1
|= (skb_shinfo(skb
)->gso_size
& TPD_MSS_MASK
) <<
2060 if (likely(skb
->ip_summed
== CHECKSUM_PARTIAL
)) {
2062 cso
= skb_checksum_start_offset(skb
);
2064 if (unlikely(cso
& 0x1)) {
2065 if (netif_msg_tx_err(adapter
))
2066 dev_err(&adapter
->pdev
->dev
,
2067 "payload offset should not an event number\n");
2070 css
= cso
+ skb
->csum_offset
;
2072 (*tpd
)->word1
|= ((cso
>> 1) & TPD_PLOADOFFSET_MASK
) <<
2073 TPD_PLOADOFFSET_SHIFT
;
2074 (*tpd
)->word1
|= ((css
>> 1) & TPD_CCSUM_OFFSET_MASK
) <<
2075 TPD_CCSUM_OFFSET_SHIFT
;
2076 (*tpd
)->word1
|= 1 << TPD_CCSUM_EN_SHIFT
;
2082 static void atl1c_tx_rollback(struct atl1c_adapter
*adpt
,
2083 struct atl1c_tpd_desc
*first_tpd
,
2084 enum atl1c_trans_queue type
)
2086 struct atl1c_tpd_ring
*tpd_ring
= &adpt
->tpd_ring
[type
];
2087 struct atl1c_buffer
*buffer_info
;
2088 struct atl1c_tpd_desc
*tpd
;
2089 u16 first_index
, index
;
2091 first_index
= first_tpd
- (struct atl1c_tpd_desc
*)tpd_ring
->desc
;
2092 index
= first_index
;
2093 while (index
!= tpd_ring
->next_to_use
) {
2094 tpd
= ATL1C_TPD_DESC(tpd_ring
, index
);
2095 buffer_info
= &tpd_ring
->buffer_info
[index
];
2096 atl1c_clean_buffer(adpt
->pdev
, buffer_info
);
2097 memset(tpd
, 0, sizeof(struct atl1c_tpd_desc
));
2098 if (++index
== tpd_ring
->count
)
2101 tpd_ring
->next_to_use
= first_index
;
2104 static int atl1c_tx_map(struct atl1c_adapter
*adapter
,
2105 struct sk_buff
*skb
, struct atl1c_tpd_desc
*tpd
,
2106 enum atl1c_trans_queue type
)
2108 struct atl1c_tpd_desc
*use_tpd
= NULL
;
2109 struct atl1c_buffer
*buffer_info
= NULL
;
2110 u16 buf_len
= skb_headlen(skb
);
2118 nr_frags
= skb_shinfo(skb
)->nr_frags
;
2119 tso
= (tpd
->word1
>> TPD_LSO_EN_SHIFT
) & TPD_LSO_EN_MASK
;
2122 map_len
= hdr_len
= skb_transport_offset(skb
) + tcp_hdrlen(skb
);
2125 buffer_info
= atl1c_get_tx_buffer(adapter
, use_tpd
);
2126 buffer_info
->length
= map_len
;
2127 buffer_info
->dma
= pci_map_single(adapter
->pdev
,
2128 skb
->data
, hdr_len
, PCI_DMA_TODEVICE
);
2129 if (unlikely(pci_dma_mapping_error(adapter
->pdev
,
2132 ATL1C_SET_BUFFER_STATE(buffer_info
, ATL1C_BUFFER_BUSY
);
2133 ATL1C_SET_PCIMAP_TYPE(buffer_info
, ATL1C_PCIMAP_SINGLE
,
2134 ATL1C_PCIMAP_TODEVICE
);
2135 mapped_len
+= map_len
;
2136 use_tpd
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
2137 use_tpd
->buffer_len
= cpu_to_le16(buffer_info
->length
);
2140 if (mapped_len
< buf_len
) {
2141 /* mapped_len == 0, means we should use the first tpd,
2142 which is given by caller */
2143 if (mapped_len
== 0)
2146 use_tpd
= atl1c_get_tpd(adapter
, type
);
2147 memcpy(use_tpd
, tpd
, sizeof(struct atl1c_tpd_desc
));
2149 buffer_info
= atl1c_get_tx_buffer(adapter
, use_tpd
);
2150 buffer_info
->length
= buf_len
- mapped_len
;
2152 pci_map_single(adapter
->pdev
, skb
->data
+ mapped_len
,
2153 buffer_info
->length
, PCI_DMA_TODEVICE
);
2154 if (unlikely(pci_dma_mapping_error(adapter
->pdev
,
2158 ATL1C_SET_BUFFER_STATE(buffer_info
, ATL1C_BUFFER_BUSY
);
2159 ATL1C_SET_PCIMAP_TYPE(buffer_info
, ATL1C_PCIMAP_SINGLE
,
2160 ATL1C_PCIMAP_TODEVICE
);
2161 use_tpd
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
2162 use_tpd
->buffer_len
= cpu_to_le16(buffer_info
->length
);
2165 for (f
= 0; f
< nr_frags
; f
++) {
2166 struct skb_frag_struct
*frag
;
2168 frag
= &skb_shinfo(skb
)->frags
[f
];
2170 use_tpd
= atl1c_get_tpd(adapter
, type
);
2171 memcpy(use_tpd
, tpd
, sizeof(struct atl1c_tpd_desc
));
2173 buffer_info
= atl1c_get_tx_buffer(adapter
, use_tpd
);
2174 buffer_info
->length
= skb_frag_size(frag
);
2175 buffer_info
->dma
= skb_frag_dma_map(&adapter
->pdev
->dev
,
2177 buffer_info
->length
,
2179 if (dma_mapping_error(&adapter
->pdev
->dev
, buffer_info
->dma
))
2182 ATL1C_SET_BUFFER_STATE(buffer_info
, ATL1C_BUFFER_BUSY
);
2183 ATL1C_SET_PCIMAP_TYPE(buffer_info
, ATL1C_PCIMAP_PAGE
,
2184 ATL1C_PCIMAP_TODEVICE
);
2185 use_tpd
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
2186 use_tpd
->buffer_len
= cpu_to_le16(buffer_info
->length
);
2190 use_tpd
->word1
|= 1 << TPD_EOP_SHIFT
;
2191 /* The last buffer info contain the skb address,
2192 so it will be free after unmap */
2193 buffer_info
->skb
= skb
;
2198 buffer_info
->dma
= 0;
2199 buffer_info
->length
= 0;
2203 static void atl1c_tx_queue(struct atl1c_adapter
*adapter
, struct sk_buff
*skb
,
2204 struct atl1c_tpd_desc
*tpd
, enum atl1c_trans_queue type
)
2206 struct atl1c_tpd_ring
*tpd_ring
= &adapter
->tpd_ring
[type
];
2209 reg
= type
== atl1c_trans_high
? REG_TPD_PRI1_PIDX
: REG_TPD_PRI0_PIDX
;
2210 AT_WRITE_REGW(&adapter
->hw
, reg
, tpd_ring
->next_to_use
);
2213 static netdev_tx_t
atl1c_xmit_frame(struct sk_buff
*skb
,
2214 struct net_device
*netdev
)
2216 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
2218 struct atl1c_tpd_desc
*tpd
;
2219 enum atl1c_trans_queue type
= atl1c_trans_normal
;
2221 if (test_bit(__AT_DOWN
, &adapter
->flags
)) {
2222 dev_kfree_skb_any(skb
);
2223 return NETDEV_TX_OK
;
2226 tpd_req
= atl1c_cal_tpd_req(skb
);
2228 if (atl1c_tpd_avail(adapter
, type
) < tpd_req
) {
2229 /* no enough descriptor, just stop queue */
2230 netif_stop_queue(netdev
);
2231 return NETDEV_TX_BUSY
;
2234 tpd
= atl1c_get_tpd(adapter
, type
);
2236 /* do TSO and check sum */
2237 if (atl1c_tso_csum(adapter
, skb
, &tpd
, type
) != 0) {
2238 dev_kfree_skb_any(skb
);
2239 return NETDEV_TX_OK
;
2242 if (unlikely(skb_vlan_tag_present(skb
))) {
2243 u16 vlan
= skb_vlan_tag_get(skb
);
2246 vlan
= cpu_to_le16(vlan
);
2247 AT_VLAN_TO_TAG(vlan
, tag
);
2248 tpd
->word1
|= 1 << TPD_INS_VTAG_SHIFT
;
2249 tpd
->vlan_tag
= tag
;
2252 if (skb_network_offset(skb
) != ETH_HLEN
)
2253 tpd
->word1
|= 1 << TPD_ETH_TYPE_SHIFT
; /* Ethernet frame */
2255 if (atl1c_tx_map(adapter
, skb
, tpd
, type
) < 0) {
2256 netif_info(adapter
, tx_done
, adapter
->netdev
,
2257 "tx-skb dropped due to dma error\n");
2258 /* roll back tpd/buffer */
2259 atl1c_tx_rollback(adapter
, tpd
, type
);
2260 dev_kfree_skb_any(skb
);
2262 netdev_sent_queue(adapter
->netdev
, skb
->len
);
2263 atl1c_tx_queue(adapter
, skb
, tpd
, type
);
2266 return NETDEV_TX_OK
;
2269 static void atl1c_free_irq(struct atl1c_adapter
*adapter
)
2271 struct net_device
*netdev
= adapter
->netdev
;
2273 free_irq(adapter
->pdev
->irq
, netdev
);
2275 if (adapter
->have_msi
)
2276 pci_disable_msi(adapter
->pdev
);
2279 static int atl1c_request_irq(struct atl1c_adapter
*adapter
)
2281 struct pci_dev
*pdev
= adapter
->pdev
;
2282 struct net_device
*netdev
= adapter
->netdev
;
2286 adapter
->have_msi
= true;
2287 err
= pci_enable_msi(adapter
->pdev
);
2289 if (netif_msg_ifup(adapter
))
2291 "Unable to allocate MSI interrupt Error: %d\n",
2293 adapter
->have_msi
= false;
2296 if (!adapter
->have_msi
)
2297 flags
|= IRQF_SHARED
;
2298 err
= request_irq(adapter
->pdev
->irq
, atl1c_intr
, flags
,
2299 netdev
->name
, netdev
);
2301 if (netif_msg_ifup(adapter
))
2303 "Unable to allocate interrupt Error: %d\n",
2305 if (adapter
->have_msi
)
2306 pci_disable_msi(adapter
->pdev
);
2309 if (netif_msg_ifup(adapter
))
2310 dev_dbg(&pdev
->dev
, "atl1c_request_irq OK\n");
2315 static void atl1c_reset_dma_ring(struct atl1c_adapter
*adapter
)
2317 /* release tx-pending skbs and reset tx/rx ring index */
2318 atl1c_clean_tx_ring(adapter
, atl1c_trans_normal
);
2319 atl1c_clean_tx_ring(adapter
, atl1c_trans_high
);
2320 atl1c_clean_rx_ring(adapter
);
2323 static int atl1c_up(struct atl1c_adapter
*adapter
)
2325 struct net_device
*netdev
= adapter
->netdev
;
2328 netif_carrier_off(netdev
);
2330 err
= atl1c_configure(adapter
);
2334 err
= atl1c_request_irq(adapter
);
2338 atl1c_check_link_status(adapter
);
2339 clear_bit(__AT_DOWN
, &adapter
->flags
);
2340 napi_enable(&adapter
->napi
);
2341 atl1c_irq_enable(adapter
);
2342 netif_start_queue(netdev
);
2346 atl1c_clean_rx_ring(adapter
);
2350 static void atl1c_down(struct atl1c_adapter
*adapter
)
2352 struct net_device
*netdev
= adapter
->netdev
;
2354 atl1c_del_timer(adapter
);
2355 adapter
->work_event
= 0; /* clear all event */
2356 /* signal that we're down so the interrupt handler does not
2357 * reschedule our watchdog timer */
2358 set_bit(__AT_DOWN
, &adapter
->flags
);
2359 netif_carrier_off(netdev
);
2360 napi_disable(&adapter
->napi
);
2361 atl1c_irq_disable(adapter
);
2362 atl1c_free_irq(adapter
);
2363 /* disable ASPM if device inactive */
2364 atl1c_disable_l0s_l1(&adapter
->hw
);
2365 /* reset MAC to disable all RX/TX */
2366 atl1c_reset_mac(&adapter
->hw
);
2369 adapter
->link_speed
= SPEED_0
;
2370 adapter
->link_duplex
= -1;
2371 atl1c_reset_dma_ring(adapter
);
2375 * atl1c_open - Called when a network interface is made active
2376 * @netdev: network interface device structure
2378 * Returns 0 on success, negative value on failure
2380 * The open entry point is called when a network interface is made
2381 * active by the system (IFF_UP). At this point all resources needed
2382 * for transmit and receive operations are allocated, the interrupt
2383 * handler is registered with the OS, the watchdog timer is started,
2384 * and the stack is notified that the interface is ready.
2386 static int atl1c_open(struct net_device
*netdev
)
2388 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
2391 /* disallow open during test */
2392 if (test_bit(__AT_TESTING
, &adapter
->flags
))
2395 /* allocate rx/tx dma buffer & descriptors */
2396 err
= atl1c_setup_ring_resources(adapter
);
2400 err
= atl1c_up(adapter
);
2407 atl1c_free_irq(adapter
);
2408 atl1c_free_ring_resources(adapter
);
2409 atl1c_reset_mac(&adapter
->hw
);
2414 * atl1c_close - Disables a network interface
2415 * @netdev: network interface device structure
2417 * Returns 0, this is not allowed to fail
2419 * The close entry point is called when an interface is de-activated
2420 * by the OS. The hardware is still under the drivers control, but
2421 * needs to be disabled. A global MAC reset is issued to stop the
2422 * hardware, and all transmit and receive resources are freed.
2424 static int atl1c_close(struct net_device
*netdev
)
2426 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
2428 WARN_ON(test_bit(__AT_RESETTING
, &adapter
->flags
));
2429 set_bit(__AT_DOWN
, &adapter
->flags
);
2430 cancel_work_sync(&adapter
->common_task
);
2431 atl1c_down(adapter
);
2432 atl1c_free_ring_resources(adapter
);
2436 static int atl1c_suspend(struct device
*dev
)
2438 struct pci_dev
*pdev
= to_pci_dev(dev
);
2439 struct net_device
*netdev
= pci_get_drvdata(pdev
);
2440 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
2441 struct atl1c_hw
*hw
= &adapter
->hw
;
2442 u32 wufc
= adapter
->wol
;
2444 atl1c_disable_l0s_l1(hw
);
2445 if (netif_running(netdev
)) {
2446 WARN_ON(test_bit(__AT_RESETTING
, &adapter
->flags
));
2447 atl1c_down(adapter
);
2449 netif_device_detach(netdev
);
2452 if (atl1c_phy_to_ps_link(hw
) != 0)
2453 dev_dbg(&pdev
->dev
, "phy power saving failed");
2455 atl1c_power_saving(hw
, wufc
);
2460 #ifdef CONFIG_PM_SLEEP
2461 static int atl1c_resume(struct device
*dev
)
2463 struct pci_dev
*pdev
= to_pci_dev(dev
);
2464 struct net_device
*netdev
= pci_get_drvdata(pdev
);
2465 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
2467 AT_WRITE_REG(&adapter
->hw
, REG_WOL_CTRL
, 0);
2468 atl1c_reset_pcie(&adapter
->hw
, ATL1C_PCIE_L0S_L1_DISABLE
);
2470 atl1c_phy_reset(&adapter
->hw
);
2471 atl1c_reset_mac(&adapter
->hw
);
2472 atl1c_phy_init(&adapter
->hw
);
2475 AT_READ_REG(&adapter
->hw
, REG_PM_CTRLSTAT
, &pm_data
);
2476 pm_data
&= ~PM_CTRLSTAT_PME_EN
;
2477 AT_WRITE_REG(&adapter
->hw
, REG_PM_CTRLSTAT
, pm_data
);
2480 netif_device_attach(netdev
);
2481 if (netif_running(netdev
))
2488 static void atl1c_shutdown(struct pci_dev
*pdev
)
2490 struct net_device
*netdev
= pci_get_drvdata(pdev
);
2491 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
2493 atl1c_suspend(&pdev
->dev
);
2494 pci_wake_from_d3(pdev
, adapter
->wol
);
2495 pci_set_power_state(pdev
, PCI_D3hot
);
2498 static const struct net_device_ops atl1c_netdev_ops
= {
2499 .ndo_open
= atl1c_open
,
2500 .ndo_stop
= atl1c_close
,
2501 .ndo_validate_addr
= eth_validate_addr
,
2502 .ndo_start_xmit
= atl1c_xmit_frame
,
2503 .ndo_set_mac_address
= atl1c_set_mac_addr
,
2504 .ndo_set_rx_mode
= atl1c_set_multi
,
2505 .ndo_change_mtu
= atl1c_change_mtu
,
2506 .ndo_fix_features
= atl1c_fix_features
,
2507 .ndo_set_features
= atl1c_set_features
,
2508 .ndo_do_ioctl
= atl1c_ioctl
,
2509 .ndo_tx_timeout
= atl1c_tx_timeout
,
2510 .ndo_get_stats
= atl1c_get_stats
,
2511 #ifdef CONFIG_NET_POLL_CONTROLLER
2512 .ndo_poll_controller
= atl1c_netpoll
,
2516 static int atl1c_init_netdev(struct net_device
*netdev
, struct pci_dev
*pdev
)
2518 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
2519 pci_set_drvdata(pdev
, netdev
);
2521 netdev
->netdev_ops
= &atl1c_netdev_ops
;
2522 netdev
->watchdog_timeo
= AT_TX_WATCHDOG
;
2523 netdev
->min_mtu
= ETH_ZLEN
- (ETH_HLEN
+ VLAN_HLEN
);
2524 atl1c_set_ethtool_ops(netdev
);
2526 /* TODO: add when ready */
2527 netdev
->hw_features
= NETIF_F_SG
|
2529 NETIF_F_HW_VLAN_CTAG_RX
|
2532 netdev
->features
= netdev
->hw_features
|
2533 NETIF_F_HW_VLAN_CTAG_TX
;
2538 * atl1c_probe - Device Initialization Routine
2539 * @pdev: PCI device information struct
2540 * @ent: entry in atl1c_pci_tbl
2542 * Returns 0 on success, negative on failure
2544 * atl1c_probe initializes an adapter identified by a pci_dev structure.
2545 * The OS initialization, configuring of the adapter private structure,
2546 * and a hardware reset occur.
2548 static int atl1c_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
2550 struct net_device
*netdev
;
2551 struct atl1c_adapter
*adapter
;
2552 static int cards_found
;
2556 /* enable device (incl. PCI PM wakeup and hotplug setup) */
2557 err
= pci_enable_device_mem(pdev
);
2559 dev_err(&pdev
->dev
, "cannot enable PCI device\n");
2564 * The atl1c chip can DMA to 64-bit addresses, but it uses a single
2565 * shared register for the high 32 bits, so only a single, aligned,
2566 * 4 GB physical address range can be used at a time.
2568 * Supporting 64-bit DMA on this hardware is more trouble than it's
2569 * worth. It is far easier to limit to 32-bit DMA than update
2570 * various kernel subsystems to support the mechanics required by a
2571 * fixed-high-32-bit system.
2573 if ((pci_set_dma_mask(pdev
, DMA_BIT_MASK(32)) != 0) ||
2574 (pci_set_consistent_dma_mask(pdev
, DMA_BIT_MASK(32)) != 0)) {
2575 dev_err(&pdev
->dev
, "No usable DMA configuration,aborting\n");
2579 err
= pci_request_regions(pdev
, atl1c_driver_name
);
2581 dev_err(&pdev
->dev
, "cannot obtain PCI resources\n");
2585 pci_set_master(pdev
);
2587 netdev
= alloc_etherdev(sizeof(struct atl1c_adapter
));
2588 if (netdev
== NULL
) {
2590 goto err_alloc_etherdev
;
2593 err
= atl1c_init_netdev(netdev
, pdev
);
2595 dev_err(&pdev
->dev
, "init netdevice failed\n");
2596 goto err_init_netdev
;
2598 adapter
= netdev_priv(netdev
);
2599 adapter
->bd_number
= cards_found
;
2600 adapter
->netdev
= netdev
;
2601 adapter
->pdev
= pdev
;
2602 adapter
->hw
.adapter
= adapter
;
2603 adapter
->msg_enable
= netif_msg_init(-1, atl1c_default_msg
);
2604 adapter
->hw
.hw_addr
= ioremap(pci_resource_start(pdev
, 0), pci_resource_len(pdev
, 0));
2605 if (!adapter
->hw
.hw_addr
) {
2607 dev_err(&pdev
->dev
, "cannot map device registers\n");
2612 adapter
->mii
.dev
= netdev
;
2613 adapter
->mii
.mdio_read
= atl1c_mdio_read
;
2614 adapter
->mii
.mdio_write
= atl1c_mdio_write
;
2615 adapter
->mii
.phy_id_mask
= 0x1f;
2616 adapter
->mii
.reg_num_mask
= MDIO_CTRL_REG_MASK
;
2617 netif_napi_add(netdev
, &adapter
->napi
, atl1c_clean
, 64);
2618 timer_setup(&adapter
->phy_config_timer
, atl1c_phy_config
, 0);
2619 /* setup the private structure */
2620 err
= atl1c_sw_init(adapter
);
2622 dev_err(&pdev
->dev
, "net device private data init failed\n");
2626 atl1c_set_max_mtu(netdev
);
2628 atl1c_reset_pcie(&adapter
->hw
, ATL1C_PCIE_L0S_L1_DISABLE
);
2630 /* Init GPHY as early as possible due to power saving issue */
2631 atl1c_phy_reset(&adapter
->hw
);
2633 err
= atl1c_reset_mac(&adapter
->hw
);
2639 /* reset the controller to
2640 * put the device in a known good starting state */
2641 err
= atl1c_phy_init(&adapter
->hw
);
2646 if (atl1c_read_mac_addr(&adapter
->hw
)) {
2647 /* got a random MAC address, set NET_ADDR_RANDOM to netdev */
2648 netdev
->addr_assign_type
= NET_ADDR_RANDOM
;
2650 memcpy(netdev
->dev_addr
, adapter
->hw
.mac_addr
, netdev
->addr_len
);
2651 if (netif_msg_probe(adapter
))
2652 dev_dbg(&pdev
->dev
, "mac address : %pM\n",
2653 adapter
->hw
.mac_addr
);
2655 atl1c_hw_set_mac_addr(&adapter
->hw
, adapter
->hw
.mac_addr
);
2656 INIT_WORK(&adapter
->common_task
, atl1c_common_task
);
2657 adapter
->work_event
= 0;
2658 err
= register_netdev(netdev
);
2660 dev_err(&pdev
->dev
, "register netdevice failed\n");
2664 if (netif_msg_probe(adapter
))
2665 dev_info(&pdev
->dev
, "version %s\n", ATL1C_DRV_VERSION
);
2672 iounmap(adapter
->hw
.hw_addr
);
2675 free_netdev(netdev
);
2677 pci_release_regions(pdev
);
2680 pci_disable_device(pdev
);
2685 * atl1c_remove - Device Removal Routine
2686 * @pdev: PCI device information struct
2688 * atl1c_remove is called by the PCI subsystem to alert the driver
2689 * that it should release a PCI device. The could be caused by a
2690 * Hot-Plug event, or because the driver is going to be removed from
2693 static void atl1c_remove(struct pci_dev
*pdev
)
2695 struct net_device
*netdev
= pci_get_drvdata(pdev
);
2696 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
2698 unregister_netdev(netdev
);
2699 /* restore permanent address */
2700 atl1c_hw_set_mac_addr(&adapter
->hw
, adapter
->hw
.perm_mac_addr
);
2701 atl1c_phy_disable(&adapter
->hw
);
2703 iounmap(adapter
->hw
.hw_addr
);
2705 pci_release_regions(pdev
);
2706 pci_disable_device(pdev
);
2707 free_netdev(netdev
);
2711 * atl1c_io_error_detected - called when PCI error is detected
2712 * @pdev: Pointer to PCI device
2713 * @state: The current pci connection state
2715 * This function is called after a PCI bus error affecting
2716 * this device has been detected.
2718 static pci_ers_result_t
atl1c_io_error_detected(struct pci_dev
*pdev
,
2719 pci_channel_state_t state
)
2721 struct net_device
*netdev
= pci_get_drvdata(pdev
);
2722 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
2724 netif_device_detach(netdev
);
2726 if (state
== pci_channel_io_perm_failure
)
2727 return PCI_ERS_RESULT_DISCONNECT
;
2729 if (netif_running(netdev
))
2730 atl1c_down(adapter
);
2732 pci_disable_device(pdev
);
2734 /* Request a slot slot reset. */
2735 return PCI_ERS_RESULT_NEED_RESET
;
2739 * atl1c_io_slot_reset - called after the pci bus has been reset.
2740 * @pdev: Pointer to PCI device
2742 * Restart the card from scratch, as if from a cold-boot. Implementation
2743 * resembles the first-half of the e1000_resume routine.
2745 static pci_ers_result_t
atl1c_io_slot_reset(struct pci_dev
*pdev
)
2747 struct net_device
*netdev
= pci_get_drvdata(pdev
);
2748 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
2750 if (pci_enable_device(pdev
)) {
2751 if (netif_msg_hw(adapter
))
2753 "Cannot re-enable PCI device after reset\n");
2754 return PCI_ERS_RESULT_DISCONNECT
;
2756 pci_set_master(pdev
);
2758 pci_enable_wake(pdev
, PCI_D3hot
, 0);
2759 pci_enable_wake(pdev
, PCI_D3cold
, 0);
2761 atl1c_reset_mac(&adapter
->hw
);
2763 return PCI_ERS_RESULT_RECOVERED
;
2767 * atl1c_io_resume - called when traffic can start flowing again.
2768 * @pdev: Pointer to PCI device
2770 * This callback is called when the error recovery driver tells us that
2771 * its OK to resume normal operation. Implementation resembles the
2772 * second-half of the atl1c_resume routine.
2774 static void atl1c_io_resume(struct pci_dev
*pdev
)
2776 struct net_device
*netdev
= pci_get_drvdata(pdev
);
2777 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
2779 if (netif_running(netdev
)) {
2780 if (atl1c_up(adapter
)) {
2781 if (netif_msg_hw(adapter
))
2783 "Cannot bring device back up after reset\n");
2788 netif_device_attach(netdev
);
2791 static const struct pci_error_handlers atl1c_err_handler
= {
2792 .error_detected
= atl1c_io_error_detected
,
2793 .slot_reset
= atl1c_io_slot_reset
,
2794 .resume
= atl1c_io_resume
,
2797 static SIMPLE_DEV_PM_OPS(atl1c_pm_ops
, atl1c_suspend
, atl1c_resume
);
2799 static struct pci_driver atl1c_driver
= {
2800 .name
= atl1c_driver_name
,
2801 .id_table
= atl1c_pci_tbl
,
2802 .probe
= atl1c_probe
,
2803 .remove
= atl1c_remove
,
2804 .shutdown
= atl1c_shutdown
,
2805 .err_handler
= &atl1c_err_handler
,
2806 .driver
.pm
= &atl1c_pm_ops
,
2809 module_pci_driver(atl1c_driver
);