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
);
68 static const u16 atl1c_pay_load_size
[] = {
69 128, 256, 512, 1024, 2048, 4096,
73 static const u32 atl1c_default_msg
= NETIF_MSG_DRV
| NETIF_MSG_PROBE
|
74 NETIF_MSG_LINK
| NETIF_MSG_TIMER
| NETIF_MSG_IFDOWN
| NETIF_MSG_IFUP
;
75 static void atl1c_pcie_patch(struct atl1c_hw
*hw
)
79 /* pclk sel could switch to 25M */
80 AT_READ_REG(hw
, REG_MASTER_CTRL
, &mst_data
);
81 mst_data
&= ~MASTER_CTRL_CLK_SEL_DIS
;
82 AT_WRITE_REG(hw
, REG_MASTER_CTRL
, mst_data
);
84 /* WoL/PCIE related settings */
85 if (hw
->nic_type
== athr_l1c
|| hw
->nic_type
== athr_l2c
) {
86 AT_READ_REG(hw
, REG_PCIE_PHYMISC
, &data
);
87 data
|= PCIE_PHYMISC_FORCE_RCV_DET
;
88 AT_WRITE_REG(hw
, REG_PCIE_PHYMISC
, data
);
89 } else { /* new dev set bit5 of MASTER */
90 if (!(mst_data
& MASTER_CTRL_WAKEN_25M
))
91 AT_WRITE_REG(hw
, REG_MASTER_CTRL
,
92 mst_data
| MASTER_CTRL_WAKEN_25M
);
94 /* aspm/PCIE setting only for l2cb 1.0 */
95 if (hw
->nic_type
== athr_l2c_b
&& hw
->revision_id
== L2CB_V10
) {
96 AT_READ_REG(hw
, REG_PCIE_PHYMISC2
, &data
);
97 data
= FIELD_SETX(data
, PCIE_PHYMISC2_CDR_BW
,
98 L2CB1_PCIE_PHYMISC2_CDR_BW
);
99 data
= FIELD_SETX(data
, PCIE_PHYMISC2_L0S_TH
,
100 L2CB1_PCIE_PHYMISC2_L0S_TH
);
101 AT_WRITE_REG(hw
, REG_PCIE_PHYMISC2
, data
);
102 /* extend L1 sync timer */
103 AT_READ_REG(hw
, REG_LINK_CTRL
, &data
);
104 data
|= LINK_CTRL_EXT_SYNC
;
105 AT_WRITE_REG(hw
, REG_LINK_CTRL
, data
);
107 /* l2cb 1.x & l1d 1.x */
108 if (hw
->nic_type
== athr_l2c_b
|| hw
->nic_type
== athr_l1d
) {
109 AT_READ_REG(hw
, REG_PM_CTRL
, &data
);
110 data
|= PM_CTRL_L0S_BUFSRX_EN
;
111 AT_WRITE_REG(hw
, REG_PM_CTRL
, data
);
112 /* clear vendor msg */
113 AT_READ_REG(hw
, REG_DMA_DBG
, &data
);
114 AT_WRITE_REG(hw
, REG_DMA_DBG
, data
& ~DMA_DBG_VENDOR_MSG
);
118 /* FIXME: no need any more ? */
120 * atl1c_init_pcie - init PCIE module
122 static void atl1c_reset_pcie(struct atl1c_hw
*hw
, u32 flag
)
126 struct pci_dev
*pdev
= hw
->adapter
->pdev
;
129 AT_READ_REG(hw
, PCI_COMMAND
, &pci_cmd
);
130 pci_cmd
&= ~PCI_COMMAND_INTX_DISABLE
;
131 pci_cmd
|= (PCI_COMMAND_MEMORY
| PCI_COMMAND_MASTER
|
133 AT_WRITE_REG(hw
, PCI_COMMAND
, pci_cmd
);
136 * Clear any PowerSaveing Settings
138 pci_enable_wake(pdev
, PCI_D3hot
, 0);
139 pci_enable_wake(pdev
, PCI_D3cold
, 0);
140 /* wol sts read-clear */
141 AT_READ_REG(hw
, REG_WOL_CTRL
, &data
);
142 AT_WRITE_REG(hw
, REG_WOL_CTRL
, 0);
145 * Mask some pcie error bits
147 pos
= pci_find_ext_capability(pdev
, PCI_EXT_CAP_ID_ERR
);
149 pci_read_config_dword(pdev
, pos
+ PCI_ERR_UNCOR_SEVER
, &data
);
150 data
&= ~(PCI_ERR_UNC_DLP
| PCI_ERR_UNC_FCP
);
151 pci_write_config_dword(pdev
, pos
+ PCI_ERR_UNCOR_SEVER
, data
);
153 /* clear error status */
154 pcie_capability_write_word(pdev
, PCI_EXP_DEVSTA
,
155 PCI_EXP_DEVSTA_NFED
|
160 AT_READ_REG(hw
, REG_LTSSM_ID_CTRL
, &data
);
161 data
&= ~LTSSM_ID_EN_WRO
;
162 AT_WRITE_REG(hw
, REG_LTSSM_ID_CTRL
, data
);
164 atl1c_pcie_patch(hw
);
165 if (flag
& ATL1C_PCIE_L0S_L1_DISABLE
)
166 atl1c_disable_l0s_l1(hw
);
172 * atl1c_irq_enable - Enable default interrupt generation settings
173 * @adapter: board private structure
175 static inline void atl1c_irq_enable(struct atl1c_adapter
*adapter
)
177 if (likely(atomic_dec_and_test(&adapter
->irq_sem
))) {
178 AT_WRITE_REG(&adapter
->hw
, REG_ISR
, 0x7FFFFFFF);
179 AT_WRITE_REG(&adapter
->hw
, REG_IMR
, adapter
->hw
.intr_mask
);
180 AT_WRITE_FLUSH(&adapter
->hw
);
185 * atl1c_irq_disable - Mask off interrupt generation on the NIC
186 * @adapter: board private structure
188 static inline void atl1c_irq_disable(struct atl1c_adapter
*adapter
)
190 atomic_inc(&adapter
->irq_sem
);
191 AT_WRITE_REG(&adapter
->hw
, REG_IMR
, 0);
192 AT_WRITE_REG(&adapter
->hw
, REG_ISR
, ISR_DIS_INT
);
193 AT_WRITE_FLUSH(&adapter
->hw
);
194 synchronize_irq(adapter
->pdev
->irq
);
198 * atl1c_irq_reset - reset interrupt confiure on the NIC
199 * @adapter: board private structure
201 static inline void atl1c_irq_reset(struct atl1c_adapter
*adapter
)
203 atomic_set(&adapter
->irq_sem
, 1);
204 atl1c_irq_enable(adapter
);
208 * atl1c_wait_until_idle - wait up to AT_HW_MAX_IDLE_DELAY reads
209 * of the idle status register until the device is actually idle
211 static u32
atl1c_wait_until_idle(struct atl1c_hw
*hw
, u32 modu_ctrl
)
216 for (timeout
= 0; timeout
< AT_HW_MAX_IDLE_DELAY
; timeout
++) {
217 AT_READ_REG(hw
, REG_IDLE_STATUS
, &data
);
218 if ((data
& modu_ctrl
) == 0)
226 * atl1c_phy_config - Timer Call-back
227 * @data: pointer to netdev cast into an unsigned long
229 static void atl1c_phy_config(unsigned long data
)
231 struct atl1c_adapter
*adapter
= (struct atl1c_adapter
*) data
;
232 struct atl1c_hw
*hw
= &adapter
->hw
;
235 spin_lock_irqsave(&adapter
->mdio_lock
, flags
);
236 atl1c_restart_autoneg(hw
);
237 spin_unlock_irqrestore(&adapter
->mdio_lock
, flags
);
240 void atl1c_reinit_locked(struct atl1c_adapter
*adapter
)
242 WARN_ON(in_interrupt());
245 clear_bit(__AT_RESETTING
, &adapter
->flags
);
248 static void atl1c_check_link_status(struct atl1c_adapter
*adapter
)
250 struct atl1c_hw
*hw
= &adapter
->hw
;
251 struct net_device
*netdev
= adapter
->netdev
;
252 struct pci_dev
*pdev
= adapter
->pdev
;
255 u16 speed
, duplex
, phy_data
;
257 spin_lock_irqsave(&adapter
->mdio_lock
, flags
);
258 /* MII_BMSR must read twise */
259 atl1c_read_phy_reg(hw
, MII_BMSR
, &phy_data
);
260 atl1c_read_phy_reg(hw
, MII_BMSR
, &phy_data
);
261 spin_unlock_irqrestore(&adapter
->mdio_lock
, flags
);
263 if ((phy_data
& BMSR_LSTATUS
) == 0) {
265 netif_carrier_off(netdev
);
266 hw
->hibernate
= true;
267 if (atl1c_reset_mac(hw
) != 0)
268 if (netif_msg_hw(adapter
))
269 dev_warn(&pdev
->dev
, "reset mac failed\n");
270 atl1c_set_aspm(hw
, SPEED_0
);
271 atl1c_post_phy_linkchg(hw
, SPEED_0
);
272 atl1c_reset_dma_ring(adapter
);
273 atl1c_configure(adapter
);
276 hw
->hibernate
= false;
277 spin_lock_irqsave(&adapter
->mdio_lock
, flags
);
278 err
= atl1c_get_speed_and_duplex(hw
, &speed
, &duplex
);
279 spin_unlock_irqrestore(&adapter
->mdio_lock
, flags
);
282 /* link result is our setting */
283 if (adapter
->link_speed
!= speed
||
284 adapter
->link_duplex
!= duplex
) {
285 adapter
->link_speed
= speed
;
286 adapter
->link_duplex
= duplex
;
287 atl1c_set_aspm(hw
, speed
);
288 atl1c_post_phy_linkchg(hw
, speed
);
289 atl1c_start_mac(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_bit(__AT_DOWN
, &adapter
->flags
))
343 if (test_and_clear_bit(ATL1C_WORK_EVENT_RESET
, &adapter
->work_event
)) {
344 netif_device_detach(netdev
);
347 netif_device_attach(netdev
);
350 if (test_and_clear_bit(ATL1C_WORK_EVENT_LINK_CHANGE
,
351 &adapter
->work_event
)) {
352 atl1c_irq_disable(adapter
);
353 atl1c_check_link_status(adapter
);
354 atl1c_irq_enable(adapter
);
359 static void atl1c_del_timer(struct atl1c_adapter
*adapter
)
361 del_timer_sync(&adapter
->phy_config_timer
);
366 * atl1c_tx_timeout - Respond to a Tx Hang
367 * @netdev: network interface device structure
369 static void atl1c_tx_timeout(struct net_device
*netdev
)
371 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
373 /* Do the reset outside of interrupt context */
374 set_bit(ATL1C_WORK_EVENT_RESET
, &adapter
->work_event
);
375 schedule_work(&adapter
->common_task
);
379 * atl1c_set_multi - Multicast and Promiscuous mode set
380 * @netdev: network interface device structure
382 * The set_multi entry point is called whenever the multicast address
383 * list or the network interface flags are updated. This routine is
384 * responsible for configuring the hardware for proper multicast,
385 * promiscuous mode, and all-multi behavior.
387 static void atl1c_set_multi(struct net_device
*netdev
)
389 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
390 struct atl1c_hw
*hw
= &adapter
->hw
;
391 struct netdev_hw_addr
*ha
;
395 /* Check for Promiscuous and All Multicast modes */
396 AT_READ_REG(hw
, REG_MAC_CTRL
, &mac_ctrl_data
);
398 if (netdev
->flags
& IFF_PROMISC
) {
399 mac_ctrl_data
|= MAC_CTRL_PROMIS_EN
;
400 } else if (netdev
->flags
& IFF_ALLMULTI
) {
401 mac_ctrl_data
|= MAC_CTRL_MC_ALL_EN
;
402 mac_ctrl_data
&= ~MAC_CTRL_PROMIS_EN
;
404 mac_ctrl_data
&= ~(MAC_CTRL_PROMIS_EN
| MAC_CTRL_MC_ALL_EN
);
407 AT_WRITE_REG(hw
, REG_MAC_CTRL
, mac_ctrl_data
);
409 /* clear the old settings from the multicast hash table */
410 AT_WRITE_REG(hw
, REG_RX_HASH_TABLE
, 0);
411 AT_WRITE_REG_ARRAY(hw
, REG_RX_HASH_TABLE
, 1, 0);
413 /* comoute mc addresses' hash value ,and put it into hash table */
414 netdev_for_each_mc_addr(ha
, netdev
) {
415 hash_value
= atl1c_hash_mc_addr(hw
, ha
->addr
);
416 atl1c_hash_set(hw
, hash_value
);
420 static void __atl1c_vlan_mode(netdev_features_t features
, u32
*mac_ctrl_data
)
422 if (features
& NETIF_F_HW_VLAN_CTAG_RX
) {
423 /* enable VLAN tag insert/strip */
424 *mac_ctrl_data
|= MAC_CTRL_RMV_VLAN
;
426 /* disable VLAN tag insert/strip */
427 *mac_ctrl_data
&= ~MAC_CTRL_RMV_VLAN
;
431 static void atl1c_vlan_mode(struct net_device
*netdev
,
432 netdev_features_t features
)
434 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
435 struct pci_dev
*pdev
= adapter
->pdev
;
436 u32 mac_ctrl_data
= 0;
438 if (netif_msg_pktdata(adapter
))
439 dev_dbg(&pdev
->dev
, "atl1c_vlan_mode\n");
441 atl1c_irq_disable(adapter
);
442 AT_READ_REG(&adapter
->hw
, REG_MAC_CTRL
, &mac_ctrl_data
);
443 __atl1c_vlan_mode(features
, &mac_ctrl_data
);
444 AT_WRITE_REG(&adapter
->hw
, REG_MAC_CTRL
, mac_ctrl_data
);
445 atl1c_irq_enable(adapter
);
448 static void atl1c_restore_vlan(struct atl1c_adapter
*adapter
)
450 struct pci_dev
*pdev
= adapter
->pdev
;
452 if (netif_msg_pktdata(adapter
))
453 dev_dbg(&pdev
->dev
, "atl1c_restore_vlan\n");
454 atl1c_vlan_mode(adapter
->netdev
, adapter
->netdev
->features
);
458 * atl1c_set_mac - Change the Ethernet Address of the NIC
459 * @netdev: network interface device structure
460 * @p: pointer to an address structure
462 * Returns 0 on success, negative on failure
464 static int atl1c_set_mac_addr(struct net_device
*netdev
, void *p
)
466 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
467 struct sockaddr
*addr
= p
;
469 if (!is_valid_ether_addr(addr
->sa_data
))
470 return -EADDRNOTAVAIL
;
472 if (netif_running(netdev
))
475 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
476 memcpy(adapter
->hw
.mac_addr
, addr
->sa_data
, netdev
->addr_len
);
478 atl1c_hw_set_mac_addr(&adapter
->hw
, adapter
->hw
.mac_addr
);
483 static void atl1c_set_rxbufsize(struct atl1c_adapter
*adapter
,
484 struct net_device
*dev
)
486 unsigned int head_size
;
489 adapter
->rx_buffer_len
= mtu
> AT_RX_BUF_SIZE
?
490 roundup(mtu
+ ETH_HLEN
+ ETH_FCS_LEN
+ VLAN_HLEN
, 8) : AT_RX_BUF_SIZE
;
492 head_size
= SKB_DATA_ALIGN(adapter
->rx_buffer_len
+ NET_SKB_PAD
) +
493 SKB_DATA_ALIGN(sizeof(struct skb_shared_info
));
494 adapter
->rx_frag_size
= roundup_pow_of_two(head_size
);
497 static netdev_features_t
atl1c_fix_features(struct net_device
*netdev
,
498 netdev_features_t features
)
501 * Since there is no support for separate rx/tx vlan accel
502 * enable/disable make sure tx flag is always in same state as rx.
504 if (features
& NETIF_F_HW_VLAN_CTAG_RX
)
505 features
|= NETIF_F_HW_VLAN_CTAG_TX
;
507 features
&= ~NETIF_F_HW_VLAN_CTAG_TX
;
509 if (netdev
->mtu
> MAX_TSO_FRAME_SIZE
)
510 features
&= ~(NETIF_F_TSO
| NETIF_F_TSO6
);
515 static int atl1c_set_features(struct net_device
*netdev
,
516 netdev_features_t features
)
518 netdev_features_t changed
= netdev
->features
^ features
;
520 if (changed
& NETIF_F_HW_VLAN_CTAG_RX
)
521 atl1c_vlan_mode(netdev
, features
);
527 * atl1c_change_mtu - Change the Maximum Transfer Unit
528 * @netdev: network interface device structure
529 * @new_mtu: new value for maximum frame size
531 * Returns 0 on success, negative on failure
533 static int atl1c_change_mtu(struct net_device
*netdev
, int new_mtu
)
535 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
536 struct atl1c_hw
*hw
= &adapter
->hw
;
537 int old_mtu
= netdev
->mtu
;
538 int max_frame
= new_mtu
+ ETH_HLEN
+ ETH_FCS_LEN
+ VLAN_HLEN
;
540 /* Fast Ethernet controller doesn't support jumbo packet */
541 if (((hw
->nic_type
== athr_l2c
||
542 hw
->nic_type
== athr_l2c_b
||
543 hw
->nic_type
== athr_l2c_b2
) && new_mtu
> ETH_DATA_LEN
) ||
544 max_frame
< ETH_ZLEN
+ ETH_FCS_LEN
||
545 max_frame
> MAX_JUMBO_FRAME_SIZE
) {
546 if (netif_msg_link(adapter
))
547 dev_warn(&adapter
->pdev
->dev
, "invalid MTU setting\n");
551 if (old_mtu
!= new_mtu
&& netif_running(netdev
)) {
552 while (test_and_set_bit(__AT_RESETTING
, &adapter
->flags
))
554 netdev
->mtu
= new_mtu
;
555 adapter
->hw
.max_frame_size
= new_mtu
;
556 atl1c_set_rxbufsize(adapter
, netdev
);
558 netdev_update_features(netdev
);
560 clear_bit(__AT_RESETTING
, &adapter
->flags
);
566 * caller should hold mdio_lock
568 static int atl1c_mdio_read(struct net_device
*netdev
, int phy_id
, int reg_num
)
570 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
573 atl1c_read_phy_reg(&adapter
->hw
, reg_num
, &result
);
577 static void atl1c_mdio_write(struct net_device
*netdev
, int phy_id
,
578 int reg_num
, int val
)
580 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
582 atl1c_write_phy_reg(&adapter
->hw
, reg_num
, val
);
585 static int atl1c_mii_ioctl(struct net_device
*netdev
,
586 struct ifreq
*ifr
, int cmd
)
588 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
589 struct pci_dev
*pdev
= adapter
->pdev
;
590 struct mii_ioctl_data
*data
= if_mii(ifr
);
594 if (!netif_running(netdev
))
597 spin_lock_irqsave(&adapter
->mdio_lock
, flags
);
604 if (atl1c_read_phy_reg(&adapter
->hw
, data
->reg_num
& 0x1F,
612 if (data
->reg_num
& ~(0x1F)) {
617 dev_dbg(&pdev
->dev
, "<atl1c_mii_ioctl> write %x %x",
618 data
->reg_num
, data
->val_in
);
619 if (atl1c_write_phy_reg(&adapter
->hw
,
620 data
->reg_num
, data
->val_in
)) {
627 retval
= -EOPNOTSUPP
;
631 spin_unlock_irqrestore(&adapter
->mdio_lock
, flags
);
635 static int atl1c_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
641 return atl1c_mii_ioctl(netdev
, ifr
, cmd
);
648 * atl1c_alloc_queues - Allocate memory for all rings
649 * @adapter: board private structure to initialize
652 static int atl1c_alloc_queues(struct atl1c_adapter
*adapter
)
657 static void atl1c_set_mac_type(struct atl1c_hw
*hw
)
659 switch (hw
->device_id
) {
660 case PCI_DEVICE_ID_ATTANSIC_L2C
:
661 hw
->nic_type
= athr_l2c
;
663 case PCI_DEVICE_ID_ATTANSIC_L1C
:
664 hw
->nic_type
= athr_l1c
;
666 case PCI_DEVICE_ID_ATHEROS_L2C_B
:
667 hw
->nic_type
= athr_l2c_b
;
669 case PCI_DEVICE_ID_ATHEROS_L2C_B2
:
670 hw
->nic_type
= athr_l2c_b2
;
672 case PCI_DEVICE_ID_ATHEROS_L1D
:
673 hw
->nic_type
= athr_l1d
;
675 case PCI_DEVICE_ID_ATHEROS_L1D_2_0
:
676 hw
->nic_type
= athr_l1d_2
;
683 static int atl1c_setup_mac_funcs(struct atl1c_hw
*hw
)
687 atl1c_set_mac_type(hw
);
688 AT_READ_REG(hw
, REG_LINK_CTRL
, &link_ctrl_data
);
690 hw
->ctrl_flags
= ATL1C_INTR_MODRT_ENABLE
|
691 ATL1C_TXQ_MODE_ENHANCE
;
692 hw
->ctrl_flags
|= ATL1C_ASPM_L0S_SUPPORT
|
693 ATL1C_ASPM_L1_SUPPORT
;
694 hw
->ctrl_flags
|= ATL1C_ASPM_CTRL_MON
;
696 if (hw
->nic_type
== athr_l1c
||
697 hw
->nic_type
== athr_l1d
||
698 hw
->nic_type
== athr_l1d_2
)
699 hw
->link_cap_flags
|= ATL1C_LINK_CAP_1000M
;
703 struct atl1c_platform_patch
{
709 #define ATL1C_LINK_PATCH 0x1
711 static const struct atl1c_platform_patch plats
[] = {
712 {0x2060, 0xC1, 0x1019, 0x8152, 0x1},
713 {0x2060, 0xC1, 0x1019, 0x2060, 0x1},
714 {0x2060, 0xC1, 0x1019, 0xE000, 0x1},
715 {0x2062, 0xC0, 0x1019, 0x8152, 0x1},
716 {0x2062, 0xC0, 0x1019, 0x2062, 0x1},
717 {0x2062, 0xC0, 0x1458, 0xE000, 0x1},
718 {0x2062, 0xC1, 0x1019, 0x8152, 0x1},
719 {0x2062, 0xC1, 0x1019, 0x2062, 0x1},
720 {0x2062, 0xC1, 0x1458, 0xE000, 0x1},
721 {0x2062, 0xC1, 0x1565, 0x2802, 0x1},
722 {0x2062, 0xC1, 0x1565, 0x2801, 0x1},
723 {0x1073, 0xC0, 0x1019, 0x8151, 0x1},
724 {0x1073, 0xC0, 0x1019, 0x1073, 0x1},
725 {0x1073, 0xC0, 0x1458, 0xE000, 0x1},
726 {0x1083, 0xC0, 0x1458, 0xE000, 0x1},
727 {0x1083, 0xC0, 0x1019, 0x8151, 0x1},
728 {0x1083, 0xC0, 0x1019, 0x1083, 0x1},
729 {0x1083, 0xC0, 0x1462, 0x7680, 0x1},
730 {0x1083, 0xC0, 0x1565, 0x2803, 0x1},
734 static void atl1c_patch_assign(struct atl1c_hw
*hw
)
736 struct pci_dev
*pdev
= hw
->adapter
->pdev
;
740 hw
->msi_lnkpatch
= false;
742 while (plats
[i
].pci_did
!= 0) {
743 if (plats
[i
].pci_did
== hw
->device_id
&&
744 plats
[i
].pci_revid
== hw
->revision_id
&&
745 plats
[i
].subsystem_vid
== hw
->subsystem_vendor_id
&&
746 plats
[i
].subsystem_did
== hw
->subsystem_id
) {
747 if (plats
[i
].patch_flag
& ATL1C_LINK_PATCH
)
748 hw
->msi_lnkpatch
= true;
753 if (hw
->device_id
== PCI_DEVICE_ID_ATHEROS_L2C_B2
&&
754 hw
->revision_id
== L2CB_V21
) {
755 /* config acess mode */
756 pci_write_config_dword(pdev
, REG_PCIE_IND_ACC_ADDR
,
757 REG_PCIE_DEV_MISC_CTRL
);
758 pci_read_config_dword(pdev
, REG_PCIE_IND_ACC_DATA
, &misc_ctrl
);
760 pci_write_config_dword(pdev
, REG_PCIE_IND_ACC_ADDR
,
761 REG_PCIE_DEV_MISC_CTRL
);
762 pci_write_config_dword(pdev
, REG_PCIE_IND_ACC_DATA
, misc_ctrl
);
766 * atl1c_sw_init - Initialize general software structures (struct atl1c_adapter)
767 * @adapter: board private structure to initialize
769 * atl1c_sw_init initializes the Adapter private data structure.
770 * Fields are initialized based on PCI device information and
771 * OS network device settings (MTU size).
773 static int atl1c_sw_init(struct atl1c_adapter
*adapter
)
775 struct atl1c_hw
*hw
= &adapter
->hw
;
776 struct pci_dev
*pdev
= adapter
->pdev
;
781 device_set_wakeup_enable(&pdev
->dev
, false);
782 adapter
->link_speed
= SPEED_0
;
783 adapter
->link_duplex
= FULL_DUPLEX
;
784 adapter
->tpd_ring
[0].count
= 1024;
785 adapter
->rfd_ring
.count
= 512;
787 hw
->vendor_id
= pdev
->vendor
;
788 hw
->device_id
= pdev
->device
;
789 hw
->subsystem_vendor_id
= pdev
->subsystem_vendor
;
790 hw
->subsystem_id
= pdev
->subsystem_device
;
791 pci_read_config_dword(pdev
, PCI_CLASS_REVISION
, &revision
);
792 hw
->revision_id
= revision
& 0xFF;
793 /* before link up, we assume hibernate is true */
794 hw
->hibernate
= true;
795 hw
->media_type
= MEDIA_TYPE_AUTO_SENSOR
;
796 if (atl1c_setup_mac_funcs(hw
) != 0) {
797 dev_err(&pdev
->dev
, "set mac function pointers failed\n");
800 atl1c_patch_assign(hw
);
802 hw
->intr_mask
= IMR_NORMAL_MASK
;
803 hw
->phy_configured
= false;
804 hw
->preamble_len
= 7;
805 hw
->max_frame_size
= adapter
->netdev
->mtu
;
806 hw
->autoneg_advertised
= ADVERTISED_Autoneg
;
807 hw
->indirect_tab
= 0xE4E4E4E4;
810 hw
->ict
= 50000; /* 100ms */
811 hw
->smb_timer
= 200000; /* 400ms */
817 hw
->dma_order
= atl1c_dma_ord_out
;
818 hw
->dmar_block
= atl1c_dma_req_1024
;
820 if (atl1c_alloc_queues(adapter
)) {
821 dev_err(&pdev
->dev
, "Unable to allocate memory for queues\n");
825 atl1c_set_rxbufsize(adapter
, adapter
->netdev
);
826 atomic_set(&adapter
->irq_sem
, 1);
827 spin_lock_init(&adapter
->mdio_lock
);
828 spin_lock_init(&adapter
->tx_lock
);
829 set_bit(__AT_DOWN
, &adapter
->flags
);
834 static inline void atl1c_clean_buffer(struct pci_dev
*pdev
,
835 struct atl1c_buffer
*buffer_info
)
838 if (buffer_info
->flags
& ATL1C_BUFFER_FREE
)
840 if (buffer_info
->dma
) {
841 if (buffer_info
->flags
& ATL1C_PCIMAP_FROMDEVICE
)
842 pci_driection
= PCI_DMA_FROMDEVICE
;
844 pci_driection
= PCI_DMA_TODEVICE
;
846 if (buffer_info
->flags
& ATL1C_PCIMAP_SINGLE
)
847 pci_unmap_single(pdev
, buffer_info
->dma
,
848 buffer_info
->length
, pci_driection
);
849 else if (buffer_info
->flags
& ATL1C_PCIMAP_PAGE
)
850 pci_unmap_page(pdev
, buffer_info
->dma
,
851 buffer_info
->length
, pci_driection
);
853 if (buffer_info
->skb
)
854 dev_consume_skb_any(buffer_info
->skb
);
855 buffer_info
->dma
= 0;
856 buffer_info
->skb
= NULL
;
857 ATL1C_SET_BUFFER_STATE(buffer_info
, ATL1C_BUFFER_FREE
);
860 * atl1c_clean_tx_ring - Free Tx-skb
861 * @adapter: board private structure
863 static void atl1c_clean_tx_ring(struct atl1c_adapter
*adapter
,
864 enum atl1c_trans_queue type
)
866 struct atl1c_tpd_ring
*tpd_ring
= &adapter
->tpd_ring
[type
];
867 struct atl1c_buffer
*buffer_info
;
868 struct pci_dev
*pdev
= adapter
->pdev
;
869 u16 index
, ring_count
;
871 ring_count
= tpd_ring
->count
;
872 for (index
= 0; index
< ring_count
; index
++) {
873 buffer_info
= &tpd_ring
->buffer_info
[index
];
874 atl1c_clean_buffer(pdev
, buffer_info
);
877 /* Zero out Tx-buffers */
878 memset(tpd_ring
->desc
, 0, sizeof(struct atl1c_tpd_desc
) *
880 atomic_set(&tpd_ring
->next_to_clean
, 0);
881 tpd_ring
->next_to_use
= 0;
885 * atl1c_clean_rx_ring - Free rx-reservation skbs
886 * @adapter: board private structure
888 static void atl1c_clean_rx_ring(struct atl1c_adapter
*adapter
)
890 struct atl1c_rfd_ring
*rfd_ring
= &adapter
->rfd_ring
;
891 struct atl1c_rrd_ring
*rrd_ring
= &adapter
->rrd_ring
;
892 struct atl1c_buffer
*buffer_info
;
893 struct pci_dev
*pdev
= adapter
->pdev
;
896 for (j
= 0; j
< rfd_ring
->count
; j
++) {
897 buffer_info
= &rfd_ring
->buffer_info
[j
];
898 atl1c_clean_buffer(pdev
, buffer_info
);
900 /* zero out the descriptor ring */
901 memset(rfd_ring
->desc
, 0, rfd_ring
->size
);
902 rfd_ring
->next_to_clean
= 0;
903 rfd_ring
->next_to_use
= 0;
904 rrd_ring
->next_to_use
= 0;
905 rrd_ring
->next_to_clean
= 0;
909 * Read / Write Ptr Initialize:
911 static void atl1c_init_ring_ptrs(struct atl1c_adapter
*adapter
)
913 struct atl1c_tpd_ring
*tpd_ring
= adapter
->tpd_ring
;
914 struct atl1c_rfd_ring
*rfd_ring
= &adapter
->rfd_ring
;
915 struct atl1c_rrd_ring
*rrd_ring
= &adapter
->rrd_ring
;
916 struct atl1c_buffer
*buffer_info
;
919 for (i
= 0; i
< AT_MAX_TRANSMIT_QUEUE
; i
++) {
920 tpd_ring
[i
].next_to_use
= 0;
921 atomic_set(&tpd_ring
[i
].next_to_clean
, 0);
922 buffer_info
= tpd_ring
[i
].buffer_info
;
923 for (j
= 0; j
< tpd_ring
->count
; j
++)
924 ATL1C_SET_BUFFER_STATE(&buffer_info
[i
],
927 rfd_ring
->next_to_use
= 0;
928 rfd_ring
->next_to_clean
= 0;
929 rrd_ring
->next_to_use
= 0;
930 rrd_ring
->next_to_clean
= 0;
931 for (j
= 0; j
< rfd_ring
->count
; j
++) {
932 buffer_info
= &rfd_ring
->buffer_info
[j
];
933 ATL1C_SET_BUFFER_STATE(buffer_info
, ATL1C_BUFFER_FREE
);
938 * atl1c_free_ring_resources - Free Tx / RX descriptor Resources
939 * @adapter: board private structure
941 * Free all transmit software resources
943 static void atl1c_free_ring_resources(struct atl1c_adapter
*adapter
)
945 struct pci_dev
*pdev
= adapter
->pdev
;
947 pci_free_consistent(pdev
, adapter
->ring_header
.size
,
948 adapter
->ring_header
.desc
,
949 adapter
->ring_header
.dma
);
950 adapter
->ring_header
.desc
= NULL
;
952 /* Note: just free tdp_ring.buffer_info,
953 * it contain rfd_ring.buffer_info, do not double free */
954 if (adapter
->tpd_ring
[0].buffer_info
) {
955 kfree(adapter
->tpd_ring
[0].buffer_info
);
956 adapter
->tpd_ring
[0].buffer_info
= NULL
;
958 if (adapter
->rx_page
) {
959 put_page(adapter
->rx_page
);
960 adapter
->rx_page
= NULL
;
965 * atl1c_setup_mem_resources - allocate Tx / RX descriptor resources
966 * @adapter: board private structure
968 * Return 0 on success, negative on failure
970 static int atl1c_setup_ring_resources(struct atl1c_adapter
*adapter
)
972 struct pci_dev
*pdev
= adapter
->pdev
;
973 struct atl1c_tpd_ring
*tpd_ring
= adapter
->tpd_ring
;
974 struct atl1c_rfd_ring
*rfd_ring
= &adapter
->rfd_ring
;
975 struct atl1c_rrd_ring
*rrd_ring
= &adapter
->rrd_ring
;
976 struct atl1c_ring_header
*ring_header
= &adapter
->ring_header
;
980 int rx_desc_count
= 0;
983 rrd_ring
->count
= rfd_ring
->count
;
984 for (i
= 1; i
< AT_MAX_TRANSMIT_QUEUE
; i
++)
985 tpd_ring
[i
].count
= tpd_ring
[0].count
;
987 /* 2 tpd queue, one high priority queue,
988 * another normal priority queue */
989 size
= sizeof(struct atl1c_buffer
) * (tpd_ring
->count
* 2 +
991 tpd_ring
->buffer_info
= kzalloc(size
, GFP_KERNEL
);
992 if (unlikely(!tpd_ring
->buffer_info
))
995 for (i
= 0; i
< AT_MAX_TRANSMIT_QUEUE
; i
++) {
996 tpd_ring
[i
].buffer_info
=
997 (tpd_ring
->buffer_info
+ count
);
998 count
+= tpd_ring
[i
].count
;
1001 rfd_ring
->buffer_info
=
1002 (tpd_ring
->buffer_info
+ count
);
1003 count
+= rfd_ring
->count
;
1004 rx_desc_count
+= rfd_ring
->count
;
1007 * real ring DMA buffer
1008 * each ring/block may need up to 8 bytes for alignment, hence the
1009 * additional bytes tacked onto the end.
1011 ring_header
->size
= size
=
1012 sizeof(struct atl1c_tpd_desc
) * tpd_ring
->count
* 2 +
1013 sizeof(struct atl1c_rx_free_desc
) * rx_desc_count
+
1014 sizeof(struct atl1c_recv_ret_status
) * rx_desc_count
+
1017 ring_header
->desc
= pci_alloc_consistent(pdev
, ring_header
->size
,
1019 if (unlikely(!ring_header
->desc
)) {
1020 dev_err(&pdev
->dev
, "pci_alloc_consistend failed\n");
1023 memset(ring_header
->desc
, 0, ring_header
->size
);
1026 tpd_ring
[0].dma
= roundup(ring_header
->dma
, 8);
1027 offset
= tpd_ring
[0].dma
- ring_header
->dma
;
1028 for (i
= 0; i
< AT_MAX_TRANSMIT_QUEUE
; i
++) {
1029 tpd_ring
[i
].dma
= ring_header
->dma
+ offset
;
1030 tpd_ring
[i
].desc
= (u8
*) ring_header
->desc
+ offset
;
1032 sizeof(struct atl1c_tpd_desc
) * tpd_ring
[i
].count
;
1033 offset
+= roundup(tpd_ring
[i
].size
, 8);
1036 rfd_ring
->dma
= ring_header
->dma
+ offset
;
1037 rfd_ring
->desc
= (u8
*) ring_header
->desc
+ offset
;
1038 rfd_ring
->size
= sizeof(struct atl1c_rx_free_desc
) * rfd_ring
->count
;
1039 offset
+= roundup(rfd_ring
->size
, 8);
1042 rrd_ring
->dma
= ring_header
->dma
+ offset
;
1043 rrd_ring
->desc
= (u8
*) ring_header
->desc
+ offset
;
1044 rrd_ring
->size
= sizeof(struct atl1c_recv_ret_status
) *
1046 offset
+= roundup(rrd_ring
->size
, 8);
1051 kfree(tpd_ring
->buffer_info
);
1055 static void atl1c_configure_des_ring(struct atl1c_adapter
*adapter
)
1057 struct atl1c_hw
*hw
= &adapter
->hw
;
1058 struct atl1c_rfd_ring
*rfd_ring
= &adapter
->rfd_ring
;
1059 struct atl1c_rrd_ring
*rrd_ring
= &adapter
->rrd_ring
;
1060 struct atl1c_tpd_ring
*tpd_ring
= (struct atl1c_tpd_ring
*)
1064 AT_WRITE_REG(hw
, REG_TX_BASE_ADDR_HI
,
1065 (u32
)((tpd_ring
[atl1c_trans_normal
].dma
&
1066 AT_DMA_HI_ADDR_MASK
) >> 32));
1067 /* just enable normal priority TX queue */
1068 AT_WRITE_REG(hw
, REG_TPD_PRI0_ADDR_LO
,
1069 (u32
)(tpd_ring
[atl1c_trans_normal
].dma
&
1070 AT_DMA_LO_ADDR_MASK
));
1071 AT_WRITE_REG(hw
, REG_TPD_PRI1_ADDR_LO
,
1072 (u32
)(tpd_ring
[atl1c_trans_high
].dma
&
1073 AT_DMA_LO_ADDR_MASK
));
1074 AT_WRITE_REG(hw
, REG_TPD_RING_SIZE
,
1075 (u32
)(tpd_ring
[0].count
& TPD_RING_SIZE_MASK
));
1079 AT_WRITE_REG(hw
, REG_RX_BASE_ADDR_HI
,
1080 (u32
)((rfd_ring
->dma
& AT_DMA_HI_ADDR_MASK
) >> 32));
1081 AT_WRITE_REG(hw
, REG_RFD0_HEAD_ADDR_LO
,
1082 (u32
)(rfd_ring
->dma
& AT_DMA_LO_ADDR_MASK
));
1084 AT_WRITE_REG(hw
, REG_RFD_RING_SIZE
,
1085 rfd_ring
->count
& RFD_RING_SIZE_MASK
);
1086 AT_WRITE_REG(hw
, REG_RX_BUF_SIZE
,
1087 adapter
->rx_buffer_len
& RX_BUF_SIZE_MASK
);
1090 AT_WRITE_REG(hw
, REG_RRD0_HEAD_ADDR_LO
,
1091 (u32
)(rrd_ring
->dma
& AT_DMA_LO_ADDR_MASK
));
1092 AT_WRITE_REG(hw
, REG_RRD_RING_SIZE
,
1093 (rrd_ring
->count
& RRD_RING_SIZE_MASK
));
1095 if (hw
->nic_type
== athr_l2c_b
) {
1096 AT_WRITE_REG(hw
, REG_SRAM_RXF_LEN
, 0x02a0L
);
1097 AT_WRITE_REG(hw
, REG_SRAM_TXF_LEN
, 0x0100L
);
1098 AT_WRITE_REG(hw
, REG_SRAM_RXF_ADDR
, 0x029f0000L
);
1099 AT_WRITE_REG(hw
, REG_SRAM_RFD0_INFO
, 0x02bf02a0L
);
1100 AT_WRITE_REG(hw
, REG_SRAM_TXF_ADDR
, 0x03bf02c0L
);
1101 AT_WRITE_REG(hw
, REG_SRAM_TRD_ADDR
, 0x03df03c0L
);
1102 AT_WRITE_REG(hw
, REG_TXF_WATER_MARK
, 0); /* TX watermark, to enter l1 state.*/
1103 AT_WRITE_REG(hw
, REG_RXD_DMA_CTRL
, 0); /* RXD threshold.*/
1105 /* Load all of base address above */
1106 AT_WRITE_REG(hw
, REG_LOAD_PTR
, 1);
1109 static void atl1c_configure_tx(struct atl1c_adapter
*adapter
)
1111 struct atl1c_hw
*hw
= &adapter
->hw
;
1113 u16 tx_offload_thresh
;
1116 tx_offload_thresh
= MAX_TSO_FRAME_SIZE
;
1117 AT_WRITE_REG(hw
, REG_TX_TSO_OFFLOAD_THRESH
,
1118 (tx_offload_thresh
>> 3) & TX_TSO_OFFLOAD_THRESH_MASK
);
1119 max_pay_load
= pcie_get_readrq(adapter
->pdev
) >> 8;
1120 hw
->dmar_block
= min_t(u32
, max_pay_load
, hw
->dmar_block
);
1122 * if BIOS had changed the dam-read-max-length to an invalid value,
1123 * restore it to default value
1125 if (hw
->dmar_block
< DEVICE_CTRL_MAXRRS_MIN
) {
1126 pcie_set_readrq(adapter
->pdev
, 128 << DEVICE_CTRL_MAXRRS_MIN
);
1127 hw
->dmar_block
= DEVICE_CTRL_MAXRRS_MIN
;
1130 hw
->nic_type
== athr_l2c_b
|| hw
->nic_type
== athr_l2c_b2
?
1131 L2CB_TXQ_CFGV
: L1C_TXQ_CFGV
;
1133 AT_WRITE_REG(hw
, REG_TXQ_CTRL
, txq_ctrl_data
);
1136 static void atl1c_configure_rx(struct atl1c_adapter
*adapter
)
1138 struct atl1c_hw
*hw
= &adapter
->hw
;
1141 rxq_ctrl_data
= (hw
->rfd_burst
& RXQ_RFD_BURST_NUM_MASK
) <<
1142 RXQ_RFD_BURST_NUM_SHIFT
;
1144 if (hw
->ctrl_flags
& ATL1C_RX_IPV6_CHKSUM
)
1145 rxq_ctrl_data
|= IPV6_CHKSUM_CTRL_EN
;
1147 /* aspm for gigabit */
1148 if (hw
->nic_type
!= athr_l1d_2
&& (hw
->device_id
& 1) != 0)
1149 rxq_ctrl_data
= FIELD_SETX(rxq_ctrl_data
, ASPM_THRUPUT_LIMIT
,
1150 ASPM_THRUPUT_LIMIT_100M
);
1152 AT_WRITE_REG(hw
, REG_RXQ_CTRL
, rxq_ctrl_data
);
1155 static void atl1c_configure_dma(struct atl1c_adapter
*adapter
)
1157 struct atl1c_hw
*hw
= &adapter
->hw
;
1160 dma_ctrl_data
= FIELDX(DMA_CTRL_RORDER_MODE
, DMA_CTRL_RORDER_MODE_OUT
) |
1161 DMA_CTRL_RREQ_PRI_DATA
|
1162 FIELDX(DMA_CTRL_RREQ_BLEN
, hw
->dmar_block
) |
1163 FIELDX(DMA_CTRL_WDLY_CNT
, DMA_CTRL_WDLY_CNT_DEF
) |
1164 FIELDX(DMA_CTRL_RDLY_CNT
, DMA_CTRL_RDLY_CNT_DEF
);
1166 AT_WRITE_REG(hw
, REG_DMA_CTRL
, dma_ctrl_data
);
1170 * Stop the mac, transmit and receive units
1171 * hw - Struct containing variables accessed by shared code
1172 * return : 0 or idle status (if error)
1174 static int atl1c_stop_mac(struct atl1c_hw
*hw
)
1178 AT_READ_REG(hw
, REG_RXQ_CTRL
, &data
);
1179 data
&= ~RXQ_CTRL_EN
;
1180 AT_WRITE_REG(hw
, REG_RXQ_CTRL
, data
);
1182 AT_READ_REG(hw
, REG_TXQ_CTRL
, &data
);
1183 data
&= ~TXQ_CTRL_EN
;
1184 AT_WRITE_REG(hw
, REG_TXQ_CTRL
, data
);
1186 atl1c_wait_until_idle(hw
, IDLE_STATUS_RXQ_BUSY
| IDLE_STATUS_TXQ_BUSY
);
1188 AT_READ_REG(hw
, REG_MAC_CTRL
, &data
);
1189 data
&= ~(MAC_CTRL_TX_EN
| MAC_CTRL_RX_EN
);
1190 AT_WRITE_REG(hw
, REG_MAC_CTRL
, data
);
1192 return (int)atl1c_wait_until_idle(hw
,
1193 IDLE_STATUS_TXMAC_BUSY
| IDLE_STATUS_RXMAC_BUSY
);
1196 static void atl1c_start_mac(struct atl1c_adapter
*adapter
)
1198 struct atl1c_hw
*hw
= &adapter
->hw
;
1201 hw
->mac_duplex
= adapter
->link_duplex
== FULL_DUPLEX
? true : false;
1202 hw
->mac_speed
= adapter
->link_speed
== SPEED_1000
?
1203 atl1c_mac_speed_1000
: atl1c_mac_speed_10_100
;
1205 AT_READ_REG(hw
, REG_TXQ_CTRL
, &txq
);
1206 AT_READ_REG(hw
, REG_RXQ_CTRL
, &rxq
);
1207 AT_READ_REG(hw
, REG_MAC_CTRL
, &mac
);
1211 mac
|= MAC_CTRL_TX_EN
| MAC_CTRL_TX_FLOW
|
1212 MAC_CTRL_RX_EN
| MAC_CTRL_RX_FLOW
|
1213 MAC_CTRL_ADD_CRC
| MAC_CTRL_PAD
|
1214 MAC_CTRL_BC_EN
| MAC_CTRL_SINGLE_PAUSE_EN
|
1215 MAC_CTRL_HASH_ALG_CRC32
;
1217 mac
|= MAC_CTRL_DUPLX
;
1219 mac
&= ~MAC_CTRL_DUPLX
;
1220 mac
= FIELD_SETX(mac
, MAC_CTRL_SPEED
, hw
->mac_speed
);
1221 mac
= FIELD_SETX(mac
, MAC_CTRL_PRMLEN
, hw
->preamble_len
);
1223 AT_WRITE_REG(hw
, REG_TXQ_CTRL
, txq
);
1224 AT_WRITE_REG(hw
, REG_RXQ_CTRL
, rxq
);
1225 AT_WRITE_REG(hw
, REG_MAC_CTRL
, mac
);
1229 * Reset the transmit and receive units; mask and clear all interrupts.
1230 * hw - Struct containing variables accessed by shared code
1231 * return : 0 or idle status (if error)
1233 static int atl1c_reset_mac(struct atl1c_hw
*hw
)
1235 struct atl1c_adapter
*adapter
= hw
->adapter
;
1236 struct pci_dev
*pdev
= adapter
->pdev
;
1241 * Issue Soft Reset to the MAC. This will reset the chip's
1242 * transmit, receive, DMA. It will not effect
1243 * the current PCI configuration. The global reset bit is self-
1244 * clearing, and should clear within a microsecond.
1246 AT_READ_REG(hw
, REG_MASTER_CTRL
, &ctrl_data
);
1247 ctrl_data
|= MASTER_CTRL_OOB_DIS
;
1248 AT_WRITE_REG(hw
, REG_MASTER_CTRL
, ctrl_data
| MASTER_CTRL_SOFT_RST
);
1252 /* Wait at least 10ms for All module to be Idle */
1254 if (atl1c_wait_until_idle(hw
, IDLE_STATUS_MASK
)) {
1256 "MAC state machine can't be idle since"
1257 " disabled for 10ms second\n");
1260 AT_WRITE_REG(hw
, REG_MASTER_CTRL
, ctrl_data
);
1262 /* driver control speed/duplex */
1263 AT_READ_REG(hw
, REG_MAC_CTRL
, &ctrl_data
);
1264 AT_WRITE_REG(hw
, REG_MAC_CTRL
, ctrl_data
| MAC_CTRL_SPEED_MODE_SW
);
1266 /* clk switch setting */
1267 AT_READ_REG(hw
, REG_SERDES
, &ctrl_data
);
1268 switch (hw
->nic_type
) {
1270 ctrl_data
&= ~(SERDES_PHY_CLK_SLOWDOWN
|
1271 SERDES_MAC_CLK_SLOWDOWN
);
1272 AT_WRITE_REG(hw
, REG_SERDES
, ctrl_data
);
1276 ctrl_data
|= SERDES_PHY_CLK_SLOWDOWN
| SERDES_MAC_CLK_SLOWDOWN
;
1277 AT_WRITE_REG(hw
, REG_SERDES
, ctrl_data
);
1286 static void atl1c_disable_l0s_l1(struct atl1c_hw
*hw
)
1288 u16 ctrl_flags
= hw
->ctrl_flags
;
1290 hw
->ctrl_flags
&= ~(ATL1C_ASPM_L0S_SUPPORT
| ATL1C_ASPM_L1_SUPPORT
);
1291 atl1c_set_aspm(hw
, SPEED_0
);
1292 hw
->ctrl_flags
= ctrl_flags
;
1297 * Enable/disable L0s/L1 depend on link state.
1299 static void atl1c_set_aspm(struct atl1c_hw
*hw
, u16 link_speed
)
1304 AT_READ_REG(hw
, REG_PM_CTRL
, &pm_ctrl_data
);
1305 pm_ctrl_data
&= ~(PM_CTRL_ASPM_L1_EN
|
1306 PM_CTRL_ASPM_L0S_EN
|
1307 PM_CTRL_MAC_ASPM_CHK
);
1309 if (hw
->nic_type
== athr_l2c_b2
|| hw
->nic_type
== athr_l1d_2
) {
1310 pm_ctrl_data
&= ~PMCTRL_TXL1_AFTER_L0S
;
1312 link_speed
== SPEED_1000
|| link_speed
== SPEED_100
?
1313 L1D_PMCTRL_L1_ENTRY_TM_16US
: 1;
1314 pm_ctrl_data
= FIELD_SETX(pm_ctrl_data
,
1315 L1D_PMCTRL_L1_ENTRY_TM
, link_l1_timer
);
1317 link_l1_timer
= hw
->nic_type
== athr_l2c_b
?
1318 L2CB1_PM_CTRL_L1_ENTRY_TM
: L1C_PM_CTRL_L1_ENTRY_TM
;
1319 if (link_speed
!= SPEED_1000
&& link_speed
!= SPEED_100
)
1321 pm_ctrl_data
= FIELD_SETX(pm_ctrl_data
,
1322 PM_CTRL_L1_ENTRY_TIMER
, link_l1_timer
);
1326 if ((hw
->ctrl_flags
& ATL1C_ASPM_L0S_SUPPORT
) && link_speed
!= SPEED_0
)
1327 pm_ctrl_data
|= PM_CTRL_ASPM_L0S_EN
| PM_CTRL_MAC_ASPM_CHK
;
1328 if (hw
->ctrl_flags
& ATL1C_ASPM_L1_SUPPORT
)
1329 pm_ctrl_data
|= PM_CTRL_ASPM_L1_EN
| PM_CTRL_MAC_ASPM_CHK
;
1331 /* l2cb & l1d & l2cb2 & l1d2 */
1332 if (hw
->nic_type
== athr_l2c_b
|| hw
->nic_type
== athr_l1d
||
1333 hw
->nic_type
== athr_l2c_b2
|| hw
->nic_type
== athr_l1d_2
) {
1334 pm_ctrl_data
= FIELD_SETX(pm_ctrl_data
,
1335 PM_CTRL_PM_REQ_TIMER
, PM_CTRL_PM_REQ_TO_DEF
);
1336 pm_ctrl_data
|= PM_CTRL_RCVR_WT_TIMER
|
1337 PM_CTRL_SERDES_PD_EX_L1
|
1339 pm_ctrl_data
&= ~(PM_CTRL_SERDES_L1_EN
|
1340 PM_CTRL_SERDES_PLL_L1_EN
|
1341 PM_CTRL_SERDES_BUFS_RX_L1_EN
|
1344 /* disable l0s if link down or l2cb */
1345 if (link_speed
== SPEED_0
|| hw
->nic_type
== athr_l2c_b
)
1346 pm_ctrl_data
&= ~PM_CTRL_ASPM_L0S_EN
;
1349 FIELD_SETX(pm_ctrl_data
, PM_CTRL_L1_ENTRY_TIMER
, 0);
1350 if (link_speed
!= SPEED_0
) {
1351 pm_ctrl_data
|= PM_CTRL_SERDES_L1_EN
|
1352 PM_CTRL_SERDES_PLL_L1_EN
|
1353 PM_CTRL_SERDES_BUFS_RX_L1_EN
;
1354 pm_ctrl_data
&= ~(PM_CTRL_SERDES_PD_EX_L1
|
1355 PM_CTRL_CLK_SWH_L1
|
1356 PM_CTRL_ASPM_L0S_EN
|
1357 PM_CTRL_ASPM_L1_EN
);
1358 } else { /* link down */
1359 pm_ctrl_data
|= PM_CTRL_CLK_SWH_L1
;
1360 pm_ctrl_data
&= ~(PM_CTRL_SERDES_L1_EN
|
1361 PM_CTRL_SERDES_PLL_L1_EN
|
1362 PM_CTRL_SERDES_BUFS_RX_L1_EN
|
1363 PM_CTRL_ASPM_L0S_EN
);
1366 AT_WRITE_REG(hw
, REG_PM_CTRL
, pm_ctrl_data
);
1372 * atl1c_configure - Configure Transmit&Receive Unit after Reset
1373 * @adapter: board private structure
1375 * Configure the Tx /Rx unit of the MAC after a reset.
1377 static int atl1c_configure_mac(struct atl1c_adapter
*adapter
)
1379 struct atl1c_hw
*hw
= &adapter
->hw
;
1380 u32 master_ctrl_data
= 0;
1381 u32 intr_modrt_data
;
1384 AT_READ_REG(hw
, REG_MASTER_CTRL
, &master_ctrl_data
);
1385 master_ctrl_data
&= ~(MASTER_CTRL_TX_ITIMER_EN
|
1386 MASTER_CTRL_RX_ITIMER_EN
|
1387 MASTER_CTRL_INT_RDCLR
);
1388 /* clear interrupt status */
1389 AT_WRITE_REG(hw
, REG_ISR
, 0xFFFFFFFF);
1390 /* Clear any WOL status */
1391 AT_WRITE_REG(hw
, REG_WOL_CTRL
, 0);
1392 /* set Interrupt Clear Timer
1393 * HW will enable self to assert interrupt event to system after
1394 * waiting x-time for software to notify it accept interrupt.
1397 data
= CLK_GATING_EN_ALL
;
1398 if (hw
->ctrl_flags
& ATL1C_CLK_GATING_EN
) {
1399 if (hw
->nic_type
== athr_l2c_b
)
1400 data
&= ~CLK_GATING_RXMAC_EN
;
1403 AT_WRITE_REG(hw
, REG_CLK_GATING_CTRL
, data
);
1405 AT_WRITE_REG(hw
, REG_INT_RETRIG_TIMER
,
1406 hw
->ict
& INT_RETRIG_TIMER_MASK
);
1408 atl1c_configure_des_ring(adapter
);
1410 if (hw
->ctrl_flags
& ATL1C_INTR_MODRT_ENABLE
) {
1411 intr_modrt_data
= (hw
->tx_imt
& IRQ_MODRT_TIMER_MASK
) <<
1412 IRQ_MODRT_TX_TIMER_SHIFT
;
1413 intr_modrt_data
|= (hw
->rx_imt
& IRQ_MODRT_TIMER_MASK
) <<
1414 IRQ_MODRT_RX_TIMER_SHIFT
;
1415 AT_WRITE_REG(hw
, REG_IRQ_MODRT_TIMER_INIT
, intr_modrt_data
);
1417 MASTER_CTRL_TX_ITIMER_EN
| MASTER_CTRL_RX_ITIMER_EN
;
1420 if (hw
->ctrl_flags
& ATL1C_INTR_CLEAR_ON_READ
)
1421 master_ctrl_data
|= MASTER_CTRL_INT_RDCLR
;
1423 master_ctrl_data
|= MASTER_CTRL_SA_TIMER_EN
;
1424 AT_WRITE_REG(hw
, REG_MASTER_CTRL
, master_ctrl_data
);
1426 AT_WRITE_REG(hw
, REG_SMB_STAT_TIMER
,
1427 hw
->smb_timer
& SMB_STAT_TIMER_MASK
);
1430 AT_WRITE_REG(hw
, REG_MTU
, hw
->max_frame_size
+ ETH_HLEN
+
1431 VLAN_HLEN
+ ETH_FCS_LEN
);
1433 atl1c_configure_tx(adapter
);
1434 atl1c_configure_rx(adapter
);
1435 atl1c_configure_dma(adapter
);
1440 static int atl1c_configure(struct atl1c_adapter
*adapter
)
1442 struct net_device
*netdev
= adapter
->netdev
;
1445 atl1c_init_ring_ptrs(adapter
);
1446 atl1c_set_multi(netdev
);
1447 atl1c_restore_vlan(adapter
);
1449 num
= atl1c_alloc_rx_buffer(adapter
);
1450 if (unlikely(num
== 0))
1453 if (atl1c_configure_mac(adapter
))
1459 static void atl1c_update_hw_stats(struct atl1c_adapter
*adapter
)
1461 u16 hw_reg_addr
= 0;
1462 unsigned long *stats_item
= NULL
;
1465 /* update rx status */
1466 hw_reg_addr
= REG_MAC_RX_STATUS_BIN
;
1467 stats_item
= &adapter
->hw_stats
.rx_ok
;
1468 while (hw_reg_addr
<= REG_MAC_RX_STATUS_END
) {
1469 AT_READ_REG(&adapter
->hw
, hw_reg_addr
, &data
);
1470 *stats_item
+= data
;
1474 /* update tx status */
1475 hw_reg_addr
= REG_MAC_TX_STATUS_BIN
;
1476 stats_item
= &adapter
->hw_stats
.tx_ok
;
1477 while (hw_reg_addr
<= REG_MAC_TX_STATUS_END
) {
1478 AT_READ_REG(&adapter
->hw
, hw_reg_addr
, &data
);
1479 *stats_item
+= data
;
1486 * atl1c_get_stats - Get System Network Statistics
1487 * @netdev: network interface device structure
1489 * Returns the address of the device statistics structure.
1490 * The statistics are actually updated from the timer callback.
1492 static struct net_device_stats
*atl1c_get_stats(struct net_device
*netdev
)
1494 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
1495 struct atl1c_hw_stats
*hw_stats
= &adapter
->hw_stats
;
1496 struct net_device_stats
*net_stats
= &netdev
->stats
;
1498 atl1c_update_hw_stats(adapter
);
1499 net_stats
->rx_bytes
= hw_stats
->rx_byte_cnt
;
1500 net_stats
->tx_bytes
= hw_stats
->tx_byte_cnt
;
1501 net_stats
->multicast
= hw_stats
->rx_mcast
;
1502 net_stats
->collisions
= hw_stats
->tx_1_col
+
1503 hw_stats
->tx_2_col
+
1504 hw_stats
->tx_late_col
+
1505 hw_stats
->tx_abort_col
;
1507 net_stats
->rx_errors
= hw_stats
->rx_frag
+
1508 hw_stats
->rx_fcs_err
+
1509 hw_stats
->rx_len_err
+
1510 hw_stats
->rx_sz_ov
+
1511 hw_stats
->rx_rrd_ov
+
1512 hw_stats
->rx_align_err
+
1513 hw_stats
->rx_rxf_ov
;
1515 net_stats
->rx_fifo_errors
= hw_stats
->rx_rxf_ov
;
1516 net_stats
->rx_length_errors
= hw_stats
->rx_len_err
;
1517 net_stats
->rx_crc_errors
= hw_stats
->rx_fcs_err
;
1518 net_stats
->rx_frame_errors
= hw_stats
->rx_align_err
;
1519 net_stats
->rx_dropped
= hw_stats
->rx_rrd_ov
;
1521 net_stats
->tx_errors
= hw_stats
->tx_late_col
+
1522 hw_stats
->tx_abort_col
+
1523 hw_stats
->tx_underrun
+
1526 net_stats
->tx_fifo_errors
= hw_stats
->tx_underrun
;
1527 net_stats
->tx_aborted_errors
= hw_stats
->tx_abort_col
;
1528 net_stats
->tx_window_errors
= hw_stats
->tx_late_col
;
1530 net_stats
->rx_packets
= hw_stats
->rx_ok
+ net_stats
->rx_errors
;
1531 net_stats
->tx_packets
= hw_stats
->tx_ok
+ net_stats
->tx_errors
;
1536 static inline void atl1c_clear_phy_int(struct atl1c_adapter
*adapter
)
1540 spin_lock(&adapter
->mdio_lock
);
1541 atl1c_read_phy_reg(&adapter
->hw
, MII_ISR
, &phy_data
);
1542 spin_unlock(&adapter
->mdio_lock
);
1545 static bool atl1c_clean_tx_irq(struct atl1c_adapter
*adapter
,
1546 enum atl1c_trans_queue type
)
1548 struct atl1c_tpd_ring
*tpd_ring
= &adapter
->tpd_ring
[type
];
1549 struct atl1c_buffer
*buffer_info
;
1550 struct pci_dev
*pdev
= adapter
->pdev
;
1551 u16 next_to_clean
= atomic_read(&tpd_ring
->next_to_clean
);
1552 u16 hw_next_to_clean
;
1555 reg
= type
== atl1c_trans_high
? REG_TPD_PRI1_CIDX
: REG_TPD_PRI0_CIDX
;
1557 AT_READ_REGW(&adapter
->hw
, reg
, &hw_next_to_clean
);
1559 while (next_to_clean
!= hw_next_to_clean
) {
1560 buffer_info
= &tpd_ring
->buffer_info
[next_to_clean
];
1561 atl1c_clean_buffer(pdev
, buffer_info
);
1562 if (++next_to_clean
== tpd_ring
->count
)
1564 atomic_set(&tpd_ring
->next_to_clean
, next_to_clean
);
1567 if (netif_queue_stopped(adapter
->netdev
) &&
1568 netif_carrier_ok(adapter
->netdev
)) {
1569 netif_wake_queue(adapter
->netdev
);
1576 * atl1c_intr - Interrupt Handler
1577 * @irq: interrupt number
1578 * @data: pointer to a network interface device structure
1580 static irqreturn_t
atl1c_intr(int irq
, void *data
)
1582 struct net_device
*netdev
= data
;
1583 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
1584 struct pci_dev
*pdev
= adapter
->pdev
;
1585 struct atl1c_hw
*hw
= &adapter
->hw
;
1586 int max_ints
= AT_MAX_INT_WORK
;
1587 int handled
= IRQ_NONE
;
1592 AT_READ_REG(hw
, REG_ISR
, ®_data
);
1593 status
= reg_data
& hw
->intr_mask
;
1595 if (status
== 0 || (status
& ISR_DIS_INT
) != 0) {
1596 if (max_ints
!= AT_MAX_INT_WORK
)
1597 handled
= IRQ_HANDLED
;
1601 if (status
& ISR_GPHY
)
1602 atl1c_clear_phy_int(adapter
);
1604 AT_WRITE_REG(hw
, REG_ISR
, status
| ISR_DIS_INT
);
1605 if (status
& ISR_RX_PKT
) {
1606 if (likely(napi_schedule_prep(&adapter
->napi
))) {
1607 hw
->intr_mask
&= ~ISR_RX_PKT
;
1608 AT_WRITE_REG(hw
, REG_IMR
, hw
->intr_mask
);
1609 __napi_schedule(&adapter
->napi
);
1612 if (status
& ISR_TX_PKT
)
1613 atl1c_clean_tx_irq(adapter
, atl1c_trans_normal
);
1615 handled
= IRQ_HANDLED
;
1616 /* check if PCIE PHY Link down */
1617 if (status
& ISR_ERROR
) {
1618 if (netif_msg_hw(adapter
))
1620 "atl1c hardware error (status = 0x%x)\n",
1621 status
& ISR_ERROR
);
1623 set_bit(ATL1C_WORK_EVENT_RESET
, &adapter
->work_event
);
1624 schedule_work(&adapter
->common_task
);
1628 if (status
& ISR_OVER
)
1629 if (netif_msg_intr(adapter
))
1630 dev_warn(&pdev
->dev
,
1631 "TX/RX overflow (status = 0x%x)\n",
1635 if (status
& (ISR_GPHY
| ISR_MANUAL
)) {
1636 netdev
->stats
.tx_carrier_errors
++;
1637 atl1c_link_chg_event(adapter
);
1641 } while (--max_ints
> 0);
1642 /* re-enable Interrupt*/
1643 AT_WRITE_REG(&adapter
->hw
, REG_ISR
, 0);
1647 static inline void atl1c_rx_checksum(struct atl1c_adapter
*adapter
,
1648 struct sk_buff
*skb
, struct atl1c_recv_ret_status
*prrs
)
1651 * The pid field in RRS in not correct sometimes, so we
1652 * cannot figure out if the packet is fragmented or not,
1653 * so we tell the KERNEL CHECKSUM_NONE
1655 skb_checksum_none_assert(skb
);
1658 static struct sk_buff
*atl1c_alloc_skb(struct atl1c_adapter
*adapter
)
1660 struct sk_buff
*skb
;
1663 if (adapter
->rx_frag_size
> PAGE_SIZE
)
1664 return netdev_alloc_skb(adapter
->netdev
,
1665 adapter
->rx_buffer_len
);
1667 page
= adapter
->rx_page
;
1669 adapter
->rx_page
= page
= alloc_page(GFP_ATOMIC
);
1670 if (unlikely(!page
))
1672 adapter
->rx_page_offset
= 0;
1675 skb
= build_skb(page_address(page
) + adapter
->rx_page_offset
,
1676 adapter
->rx_frag_size
);
1678 adapter
->rx_page_offset
+= adapter
->rx_frag_size
;
1679 if (adapter
->rx_page_offset
>= PAGE_SIZE
)
1680 adapter
->rx_page
= NULL
;
1687 static int atl1c_alloc_rx_buffer(struct atl1c_adapter
*adapter
)
1689 struct atl1c_rfd_ring
*rfd_ring
= &adapter
->rfd_ring
;
1690 struct pci_dev
*pdev
= adapter
->pdev
;
1691 struct atl1c_buffer
*buffer_info
, *next_info
;
1692 struct sk_buff
*skb
;
1693 void *vir_addr
= NULL
;
1695 u16 rfd_next_to_use
, next_next
;
1696 struct atl1c_rx_free_desc
*rfd_desc
;
1699 next_next
= rfd_next_to_use
= rfd_ring
->next_to_use
;
1700 if (++next_next
== rfd_ring
->count
)
1702 buffer_info
= &rfd_ring
->buffer_info
[rfd_next_to_use
];
1703 next_info
= &rfd_ring
->buffer_info
[next_next
];
1705 while (next_info
->flags
& ATL1C_BUFFER_FREE
) {
1706 rfd_desc
= ATL1C_RFD_DESC(rfd_ring
, rfd_next_to_use
);
1708 skb
= atl1c_alloc_skb(adapter
);
1709 if (unlikely(!skb
)) {
1710 if (netif_msg_rx_err(adapter
))
1711 dev_warn(&pdev
->dev
, "alloc rx buffer failed\n");
1716 * Make buffer alignment 2 beyond a 16 byte boundary
1717 * this will result in a 16 byte aligned IP header after
1718 * the 14 byte MAC header is removed
1720 vir_addr
= skb
->data
;
1721 ATL1C_SET_BUFFER_STATE(buffer_info
, ATL1C_BUFFER_BUSY
);
1722 buffer_info
->skb
= skb
;
1723 buffer_info
->length
= adapter
->rx_buffer_len
;
1724 mapping
= pci_map_single(pdev
, vir_addr
,
1725 buffer_info
->length
,
1726 PCI_DMA_FROMDEVICE
);
1727 if (unlikely(pci_dma_mapping_error(pdev
, mapping
))) {
1729 buffer_info
->skb
= NULL
;
1730 buffer_info
->length
= 0;
1731 ATL1C_SET_BUFFER_STATE(buffer_info
, ATL1C_BUFFER_FREE
);
1732 netif_warn(adapter
, rx_err
, adapter
->netdev
, "RX pci_map_single failed");
1735 buffer_info
->dma
= mapping
;
1736 ATL1C_SET_PCIMAP_TYPE(buffer_info
, ATL1C_PCIMAP_SINGLE
,
1737 ATL1C_PCIMAP_FROMDEVICE
);
1738 rfd_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
1739 rfd_next_to_use
= next_next
;
1740 if (++next_next
== rfd_ring
->count
)
1742 buffer_info
= &rfd_ring
->buffer_info
[rfd_next_to_use
];
1743 next_info
= &rfd_ring
->buffer_info
[next_next
];
1748 /* TODO: update mailbox here */
1750 rfd_ring
->next_to_use
= rfd_next_to_use
;
1751 AT_WRITE_REG(&adapter
->hw
, REG_MB_RFD0_PROD_IDX
,
1752 rfd_ring
->next_to_use
& MB_RFDX_PROD_IDX_MASK
);
1758 static void atl1c_clean_rrd(struct atl1c_rrd_ring
*rrd_ring
,
1759 struct atl1c_recv_ret_status
*rrs
, u16 num
)
1762 /* the relationship between rrd and rfd is one map one */
1763 for (i
= 0; i
< num
; i
++, rrs
= ATL1C_RRD_DESC(rrd_ring
,
1764 rrd_ring
->next_to_clean
)) {
1765 rrs
->word3
&= ~RRS_RXD_UPDATED
;
1766 if (++rrd_ring
->next_to_clean
== rrd_ring
->count
)
1767 rrd_ring
->next_to_clean
= 0;
1771 static void atl1c_clean_rfd(struct atl1c_rfd_ring
*rfd_ring
,
1772 struct atl1c_recv_ret_status
*rrs
, u16 num
)
1776 struct atl1c_buffer
*buffer_info
= rfd_ring
->buffer_info
;
1778 rfd_index
= (rrs
->word0
>> RRS_RX_RFD_INDEX_SHIFT
) &
1779 RRS_RX_RFD_INDEX_MASK
;
1780 for (i
= 0; i
< num
; i
++) {
1781 buffer_info
[rfd_index
].skb
= NULL
;
1782 ATL1C_SET_BUFFER_STATE(&buffer_info
[rfd_index
],
1784 if (++rfd_index
== rfd_ring
->count
)
1787 rfd_ring
->next_to_clean
= rfd_index
;
1790 static void atl1c_clean_rx_irq(struct atl1c_adapter
*adapter
,
1791 int *work_done
, int work_to_do
)
1793 u16 rfd_num
, rfd_index
;
1796 struct pci_dev
*pdev
= adapter
->pdev
;
1797 struct net_device
*netdev
= adapter
->netdev
;
1798 struct atl1c_rfd_ring
*rfd_ring
= &adapter
->rfd_ring
;
1799 struct atl1c_rrd_ring
*rrd_ring
= &adapter
->rrd_ring
;
1800 struct sk_buff
*skb
;
1801 struct atl1c_recv_ret_status
*rrs
;
1802 struct atl1c_buffer
*buffer_info
;
1805 if (*work_done
>= work_to_do
)
1807 rrs
= ATL1C_RRD_DESC(rrd_ring
, rrd_ring
->next_to_clean
);
1808 if (likely(RRS_RXD_IS_VALID(rrs
->word3
))) {
1809 rfd_num
= (rrs
->word0
>> RRS_RX_RFD_CNT_SHIFT
) &
1810 RRS_RX_RFD_CNT_MASK
;
1811 if (unlikely(rfd_num
!= 1))
1812 /* TODO support mul rfd*/
1813 if (netif_msg_rx_err(adapter
))
1814 dev_warn(&pdev
->dev
,
1815 "Multi rfd not support yet!\n");
1821 atl1c_clean_rrd(rrd_ring
, rrs
, rfd_num
);
1822 if (rrs
->word3
& (RRS_RX_ERR_SUM
| RRS_802_3_LEN_ERR
)) {
1823 atl1c_clean_rfd(rfd_ring
, rrs
, rfd_num
);
1824 if (netif_msg_rx_err(adapter
))
1825 dev_warn(&pdev
->dev
,
1826 "wrong packet! rrs word3 is %x\n",
1831 length
= le16_to_cpu((rrs
->word3
>> RRS_PKT_SIZE_SHIFT
) &
1834 if (likely(rfd_num
== 1)) {
1835 rfd_index
= (rrs
->word0
>> RRS_RX_RFD_INDEX_SHIFT
) &
1836 RRS_RX_RFD_INDEX_MASK
;
1837 buffer_info
= &rfd_ring
->buffer_info
[rfd_index
];
1838 pci_unmap_single(pdev
, buffer_info
->dma
,
1839 buffer_info
->length
, PCI_DMA_FROMDEVICE
);
1840 skb
= buffer_info
->skb
;
1843 if (netif_msg_rx_err(adapter
))
1844 dev_warn(&pdev
->dev
,
1845 "Multi rfd not support yet!\n");
1848 atl1c_clean_rfd(rfd_ring
, rrs
, rfd_num
);
1849 skb_put(skb
, length
- ETH_FCS_LEN
);
1850 skb
->protocol
= eth_type_trans(skb
, netdev
);
1851 atl1c_rx_checksum(adapter
, skb
, rrs
);
1852 if (rrs
->word3
& RRS_VLAN_INS
) {
1855 AT_TAG_TO_VLAN(rrs
->vlan_tag
, vlan
);
1856 vlan
= le16_to_cpu(vlan
);
1857 __vlan_hwaccel_put_tag(skb
, htons(ETH_P_8021Q
), vlan
);
1859 netif_receive_skb(skb
);
1865 atl1c_alloc_rx_buffer(adapter
);
1869 * atl1c_clean - NAPI Rx polling callback
1871 static int atl1c_clean(struct napi_struct
*napi
, int budget
)
1873 struct atl1c_adapter
*adapter
=
1874 container_of(napi
, struct atl1c_adapter
, napi
);
1877 /* Keep link state information with original netdev */
1878 if (!netif_carrier_ok(adapter
->netdev
))
1880 /* just enable one RXQ */
1881 atl1c_clean_rx_irq(adapter
, &work_done
, budget
);
1883 if (work_done
< budget
) {
1885 napi_complete(napi
);
1886 adapter
->hw
.intr_mask
|= ISR_RX_PKT
;
1887 AT_WRITE_REG(&adapter
->hw
, REG_IMR
, adapter
->hw
.intr_mask
);
1892 #ifdef CONFIG_NET_POLL_CONTROLLER
1895 * Polling 'interrupt' - used by things like netconsole to send skbs
1896 * without having to re-enable interrupts. It's not called while
1897 * the interrupt routine is executing.
1899 static void atl1c_netpoll(struct net_device
*netdev
)
1901 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
1903 disable_irq(adapter
->pdev
->irq
);
1904 atl1c_intr(adapter
->pdev
->irq
, netdev
);
1905 enable_irq(adapter
->pdev
->irq
);
1909 static inline u16
atl1c_tpd_avail(struct atl1c_adapter
*adapter
, enum atl1c_trans_queue type
)
1911 struct atl1c_tpd_ring
*tpd_ring
= &adapter
->tpd_ring
[type
];
1912 u16 next_to_use
= 0;
1913 u16 next_to_clean
= 0;
1915 next_to_clean
= atomic_read(&tpd_ring
->next_to_clean
);
1916 next_to_use
= tpd_ring
->next_to_use
;
1918 return (u16
)(next_to_clean
> next_to_use
) ?
1919 (next_to_clean
- next_to_use
- 1) :
1920 (tpd_ring
->count
+ next_to_clean
- next_to_use
- 1);
1924 * get next usable tpd
1925 * Note: should call atl1c_tdp_avail to make sure
1926 * there is enough tpd to use
1928 static struct atl1c_tpd_desc
*atl1c_get_tpd(struct atl1c_adapter
*adapter
,
1929 enum atl1c_trans_queue type
)
1931 struct atl1c_tpd_ring
*tpd_ring
= &adapter
->tpd_ring
[type
];
1932 struct atl1c_tpd_desc
*tpd_desc
;
1933 u16 next_to_use
= 0;
1935 next_to_use
= tpd_ring
->next_to_use
;
1936 if (++tpd_ring
->next_to_use
== tpd_ring
->count
)
1937 tpd_ring
->next_to_use
= 0;
1938 tpd_desc
= ATL1C_TPD_DESC(tpd_ring
, next_to_use
);
1939 memset(tpd_desc
, 0, sizeof(struct atl1c_tpd_desc
));
1943 static struct atl1c_buffer
*
1944 atl1c_get_tx_buffer(struct atl1c_adapter
*adapter
, struct atl1c_tpd_desc
*tpd
)
1946 struct atl1c_tpd_ring
*tpd_ring
= adapter
->tpd_ring
;
1948 return &tpd_ring
->buffer_info
[tpd
-
1949 (struct atl1c_tpd_desc
*)tpd_ring
->desc
];
1952 /* Calculate the transmit packet descript needed*/
1953 static u16
atl1c_cal_tpd_req(const struct sk_buff
*skb
)
1956 u16 proto_hdr_len
= 0;
1958 tpd_req
= skb_shinfo(skb
)->nr_frags
+ 1;
1960 if (skb_is_gso(skb
)) {
1961 proto_hdr_len
= skb_transport_offset(skb
) + tcp_hdrlen(skb
);
1962 if (proto_hdr_len
< skb_headlen(skb
))
1964 if (skb_shinfo(skb
)->gso_type
& SKB_GSO_TCPV6
)
1970 static int atl1c_tso_csum(struct atl1c_adapter
*adapter
,
1971 struct sk_buff
*skb
,
1972 struct atl1c_tpd_desc
**tpd
,
1973 enum atl1c_trans_queue type
)
1975 struct pci_dev
*pdev
= adapter
->pdev
;
1976 unsigned short offload_type
;
1980 if (skb_is_gso(skb
)) {
1983 err
= skb_cow_head(skb
, 0);
1987 offload_type
= skb_shinfo(skb
)->gso_type
;
1989 if (offload_type
& SKB_GSO_TCPV4
) {
1990 real_len
= (((unsigned char *)ip_hdr(skb
) - skb
->data
)
1991 + ntohs(ip_hdr(skb
)->tot_len
));
1993 if (real_len
< skb
->len
)
1994 pskb_trim(skb
, real_len
);
1996 hdr_len
= (skb_transport_offset(skb
) + tcp_hdrlen(skb
));
1997 if (unlikely(skb
->len
== hdr_len
)) {
1998 /* only xsum need */
1999 if (netif_msg_tx_queued(adapter
))
2000 dev_warn(&pdev
->dev
,
2001 "IPV4 tso with zero data??\n");
2004 ip_hdr(skb
)->check
= 0;
2005 tcp_hdr(skb
)->check
= ~csum_tcpudp_magic(
2009 (*tpd
)->word1
|= 1 << TPD_IPV4_PACKET_SHIFT
;
2013 if (offload_type
& SKB_GSO_TCPV6
) {
2014 struct atl1c_tpd_ext_desc
*etpd
=
2015 *(struct atl1c_tpd_ext_desc
**)(tpd
);
2017 memset(etpd
, 0, sizeof(struct atl1c_tpd_ext_desc
));
2018 *tpd
= atl1c_get_tpd(adapter
, type
);
2019 ipv6_hdr(skb
)->payload_len
= 0;
2020 /* check payload == 0 byte ? */
2021 hdr_len
= (skb_transport_offset(skb
) + tcp_hdrlen(skb
));
2022 if (unlikely(skb
->len
== hdr_len
)) {
2023 /* only xsum need */
2024 if (netif_msg_tx_queued(adapter
))
2025 dev_warn(&pdev
->dev
,
2026 "IPV6 tso with zero data??\n");
2029 tcp_hdr(skb
)->check
= ~csum_ipv6_magic(
2030 &ipv6_hdr(skb
)->saddr
,
2031 &ipv6_hdr(skb
)->daddr
,
2033 etpd
->word1
|= 1 << TPD_LSO_EN_SHIFT
;
2034 etpd
->word1
|= 1 << TPD_LSO_VER_SHIFT
;
2035 etpd
->pkt_len
= cpu_to_le32(skb
->len
);
2036 (*tpd
)->word1
|= 1 << TPD_LSO_VER_SHIFT
;
2039 (*tpd
)->word1
|= 1 << TPD_LSO_EN_SHIFT
;
2040 (*tpd
)->word1
|= (skb_transport_offset(skb
) & TPD_TCPHDR_OFFSET_MASK
) <<
2041 TPD_TCPHDR_OFFSET_SHIFT
;
2042 (*tpd
)->word1
|= (skb_shinfo(skb
)->gso_size
& TPD_MSS_MASK
) <<
2048 if (likely(skb
->ip_summed
== CHECKSUM_PARTIAL
)) {
2050 cso
= skb_checksum_start_offset(skb
);
2052 if (unlikely(cso
& 0x1)) {
2053 if (netif_msg_tx_err(adapter
))
2054 dev_err(&adapter
->pdev
->dev
,
2055 "payload offset should not an event number\n");
2058 css
= cso
+ skb
->csum_offset
;
2060 (*tpd
)->word1
|= ((cso
>> 1) & TPD_PLOADOFFSET_MASK
) <<
2061 TPD_PLOADOFFSET_SHIFT
;
2062 (*tpd
)->word1
|= ((css
>> 1) & TPD_CCSUM_OFFSET_MASK
) <<
2063 TPD_CCSUM_OFFSET_SHIFT
;
2064 (*tpd
)->word1
|= 1 << TPD_CCSUM_EN_SHIFT
;
2070 static void atl1c_tx_rollback(struct atl1c_adapter
*adpt
,
2071 struct atl1c_tpd_desc
*first_tpd
,
2072 enum atl1c_trans_queue type
)
2074 struct atl1c_tpd_ring
*tpd_ring
= &adpt
->tpd_ring
[type
];
2075 struct atl1c_buffer
*buffer_info
;
2076 struct atl1c_tpd_desc
*tpd
;
2077 u16 first_index
, index
;
2079 first_index
= first_tpd
- (struct atl1c_tpd_desc
*)tpd_ring
->desc
;
2080 index
= first_index
;
2081 while (index
!= tpd_ring
->next_to_use
) {
2082 tpd
= ATL1C_TPD_DESC(tpd_ring
, index
);
2083 buffer_info
= &tpd_ring
->buffer_info
[index
];
2084 atl1c_clean_buffer(adpt
->pdev
, buffer_info
);
2085 memset(tpd
, 0, sizeof(struct atl1c_tpd_desc
));
2086 if (++index
== tpd_ring
->count
)
2089 tpd_ring
->next_to_use
= first_index
;
2092 static int atl1c_tx_map(struct atl1c_adapter
*adapter
,
2093 struct sk_buff
*skb
, struct atl1c_tpd_desc
*tpd
,
2094 enum atl1c_trans_queue type
)
2096 struct atl1c_tpd_desc
*use_tpd
= NULL
;
2097 struct atl1c_buffer
*buffer_info
= NULL
;
2098 u16 buf_len
= skb_headlen(skb
);
2106 nr_frags
= skb_shinfo(skb
)->nr_frags
;
2107 tso
= (tpd
->word1
>> TPD_LSO_EN_SHIFT
) & TPD_LSO_EN_MASK
;
2110 map_len
= hdr_len
= skb_transport_offset(skb
) + tcp_hdrlen(skb
);
2113 buffer_info
= atl1c_get_tx_buffer(adapter
, use_tpd
);
2114 buffer_info
->length
= map_len
;
2115 buffer_info
->dma
= pci_map_single(adapter
->pdev
,
2116 skb
->data
, hdr_len
, PCI_DMA_TODEVICE
);
2117 if (unlikely(pci_dma_mapping_error(adapter
->pdev
,
2120 ATL1C_SET_BUFFER_STATE(buffer_info
, ATL1C_BUFFER_BUSY
);
2121 ATL1C_SET_PCIMAP_TYPE(buffer_info
, ATL1C_PCIMAP_SINGLE
,
2122 ATL1C_PCIMAP_TODEVICE
);
2123 mapped_len
+= map_len
;
2124 use_tpd
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
2125 use_tpd
->buffer_len
= cpu_to_le16(buffer_info
->length
);
2128 if (mapped_len
< buf_len
) {
2129 /* mapped_len == 0, means we should use the first tpd,
2130 which is given by caller */
2131 if (mapped_len
== 0)
2134 use_tpd
= atl1c_get_tpd(adapter
, type
);
2135 memcpy(use_tpd
, tpd
, sizeof(struct atl1c_tpd_desc
));
2137 buffer_info
= atl1c_get_tx_buffer(adapter
, use_tpd
);
2138 buffer_info
->length
= buf_len
- mapped_len
;
2140 pci_map_single(adapter
->pdev
, skb
->data
+ mapped_len
,
2141 buffer_info
->length
, PCI_DMA_TODEVICE
);
2142 if (unlikely(pci_dma_mapping_error(adapter
->pdev
,
2146 ATL1C_SET_BUFFER_STATE(buffer_info
, ATL1C_BUFFER_BUSY
);
2147 ATL1C_SET_PCIMAP_TYPE(buffer_info
, ATL1C_PCIMAP_SINGLE
,
2148 ATL1C_PCIMAP_TODEVICE
);
2149 use_tpd
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
2150 use_tpd
->buffer_len
= cpu_to_le16(buffer_info
->length
);
2153 for (f
= 0; f
< nr_frags
; f
++) {
2154 struct skb_frag_struct
*frag
;
2156 frag
= &skb_shinfo(skb
)->frags
[f
];
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
= skb_frag_size(frag
);
2163 buffer_info
->dma
= skb_frag_dma_map(&adapter
->pdev
->dev
,
2165 buffer_info
->length
,
2167 if (dma_mapping_error(&adapter
->pdev
->dev
, buffer_info
->dma
))
2170 ATL1C_SET_BUFFER_STATE(buffer_info
, ATL1C_BUFFER_BUSY
);
2171 ATL1C_SET_PCIMAP_TYPE(buffer_info
, ATL1C_PCIMAP_PAGE
,
2172 ATL1C_PCIMAP_TODEVICE
);
2173 use_tpd
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
2174 use_tpd
->buffer_len
= cpu_to_le16(buffer_info
->length
);
2178 use_tpd
->word1
|= 1 << TPD_EOP_SHIFT
;
2179 /* The last buffer info contain the skb address,
2180 so it will be free after unmap */
2181 buffer_info
->skb
= skb
;
2186 buffer_info
->dma
= 0;
2187 buffer_info
->length
= 0;
2191 static void atl1c_tx_queue(struct atl1c_adapter
*adapter
, struct sk_buff
*skb
,
2192 struct atl1c_tpd_desc
*tpd
, enum atl1c_trans_queue type
)
2194 struct atl1c_tpd_ring
*tpd_ring
= &adapter
->tpd_ring
[type
];
2197 reg
= type
== atl1c_trans_high
? REG_TPD_PRI1_PIDX
: REG_TPD_PRI0_PIDX
;
2198 AT_WRITE_REGW(&adapter
->hw
, reg
, tpd_ring
->next_to_use
);
2201 static netdev_tx_t
atl1c_xmit_frame(struct sk_buff
*skb
,
2202 struct net_device
*netdev
)
2204 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
2205 unsigned long flags
;
2207 struct atl1c_tpd_desc
*tpd
;
2208 enum atl1c_trans_queue type
= atl1c_trans_normal
;
2210 if (test_bit(__AT_DOWN
, &adapter
->flags
)) {
2211 dev_kfree_skb_any(skb
);
2212 return NETDEV_TX_OK
;
2215 tpd_req
= atl1c_cal_tpd_req(skb
);
2216 if (!spin_trylock_irqsave(&adapter
->tx_lock
, flags
)) {
2217 if (netif_msg_pktdata(adapter
))
2218 dev_info(&adapter
->pdev
->dev
, "tx locked\n");
2219 return NETDEV_TX_LOCKED
;
2222 if (atl1c_tpd_avail(adapter
, type
) < tpd_req
) {
2223 /* no enough descriptor, just stop queue */
2224 netif_stop_queue(netdev
);
2225 spin_unlock_irqrestore(&adapter
->tx_lock
, flags
);
2226 return NETDEV_TX_BUSY
;
2229 tpd
= atl1c_get_tpd(adapter
, type
);
2231 /* do TSO and check sum */
2232 if (atl1c_tso_csum(adapter
, skb
, &tpd
, type
) != 0) {
2233 spin_unlock_irqrestore(&adapter
->tx_lock
, flags
);
2234 dev_kfree_skb_any(skb
);
2235 return NETDEV_TX_OK
;
2238 if (unlikely(skb_vlan_tag_present(skb
))) {
2239 u16 vlan
= skb_vlan_tag_get(skb
);
2242 vlan
= cpu_to_le16(vlan
);
2243 AT_VLAN_TO_TAG(vlan
, tag
);
2244 tpd
->word1
|= 1 << TPD_INS_VTAG_SHIFT
;
2245 tpd
->vlan_tag
= tag
;
2248 if (skb_network_offset(skb
) != ETH_HLEN
)
2249 tpd
->word1
|= 1 << TPD_ETH_TYPE_SHIFT
; /* Ethernet frame */
2251 if (atl1c_tx_map(adapter
, skb
, tpd
, type
) < 0) {
2252 netif_info(adapter
, tx_done
, adapter
->netdev
,
2253 "tx-skb droppted due to dma error\n");
2254 /* roll back tpd/buffer */
2255 atl1c_tx_rollback(adapter
, tpd
, type
);
2256 spin_unlock_irqrestore(&adapter
->tx_lock
, flags
);
2257 dev_kfree_skb_any(skb
);
2259 atl1c_tx_queue(adapter
, skb
, tpd
, type
);
2260 spin_unlock_irqrestore(&adapter
->tx_lock
, flags
);
2263 return NETDEV_TX_OK
;
2266 static void atl1c_free_irq(struct atl1c_adapter
*adapter
)
2268 struct net_device
*netdev
= adapter
->netdev
;
2270 free_irq(adapter
->pdev
->irq
, netdev
);
2272 if (adapter
->have_msi
)
2273 pci_disable_msi(adapter
->pdev
);
2276 static int atl1c_request_irq(struct atl1c_adapter
*adapter
)
2278 struct pci_dev
*pdev
= adapter
->pdev
;
2279 struct net_device
*netdev
= adapter
->netdev
;
2283 adapter
->have_msi
= true;
2284 err
= pci_enable_msi(adapter
->pdev
);
2286 if (netif_msg_ifup(adapter
))
2288 "Unable to allocate MSI interrupt Error: %d\n",
2290 adapter
->have_msi
= false;
2293 if (!adapter
->have_msi
)
2294 flags
|= IRQF_SHARED
;
2295 err
= request_irq(adapter
->pdev
->irq
, atl1c_intr
, flags
,
2296 netdev
->name
, netdev
);
2298 if (netif_msg_ifup(adapter
))
2300 "Unable to allocate interrupt Error: %d\n",
2302 if (adapter
->have_msi
)
2303 pci_disable_msi(adapter
->pdev
);
2306 if (netif_msg_ifup(adapter
))
2307 dev_dbg(&pdev
->dev
, "atl1c_request_irq OK\n");
2312 static void atl1c_reset_dma_ring(struct atl1c_adapter
*adapter
)
2314 /* release tx-pending skbs and reset tx/rx ring index */
2315 atl1c_clean_tx_ring(adapter
, atl1c_trans_normal
);
2316 atl1c_clean_tx_ring(adapter
, atl1c_trans_high
);
2317 atl1c_clean_rx_ring(adapter
);
2320 static int atl1c_up(struct atl1c_adapter
*adapter
)
2322 struct net_device
*netdev
= adapter
->netdev
;
2325 netif_carrier_off(netdev
);
2327 err
= atl1c_configure(adapter
);
2331 err
= atl1c_request_irq(adapter
);
2335 atl1c_check_link_status(adapter
);
2336 clear_bit(__AT_DOWN
, &adapter
->flags
);
2337 napi_enable(&adapter
->napi
);
2338 atl1c_irq_enable(adapter
);
2339 netif_start_queue(netdev
);
2343 atl1c_clean_rx_ring(adapter
);
2347 static void atl1c_down(struct atl1c_adapter
*adapter
)
2349 struct net_device
*netdev
= adapter
->netdev
;
2351 atl1c_del_timer(adapter
);
2352 adapter
->work_event
= 0; /* clear all event */
2353 /* signal that we're down so the interrupt handler does not
2354 * reschedule our watchdog timer */
2355 set_bit(__AT_DOWN
, &adapter
->flags
);
2356 netif_carrier_off(netdev
);
2357 napi_disable(&adapter
->napi
);
2358 atl1c_irq_disable(adapter
);
2359 atl1c_free_irq(adapter
);
2360 /* disable ASPM if device inactive */
2361 atl1c_disable_l0s_l1(&adapter
->hw
);
2362 /* reset MAC to disable all RX/TX */
2363 atl1c_reset_mac(&adapter
->hw
);
2366 adapter
->link_speed
= SPEED_0
;
2367 adapter
->link_duplex
= -1;
2368 atl1c_reset_dma_ring(adapter
);
2372 * atl1c_open - Called when a network interface is made active
2373 * @netdev: network interface device structure
2375 * Returns 0 on success, negative value on failure
2377 * The open entry point is called when a network interface is made
2378 * active by the system (IFF_UP). At this point all resources needed
2379 * for transmit and receive operations are allocated, the interrupt
2380 * handler is registered with the OS, the watchdog timer is started,
2381 * and the stack is notified that the interface is ready.
2383 static int atl1c_open(struct net_device
*netdev
)
2385 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
2388 /* disallow open during test */
2389 if (test_bit(__AT_TESTING
, &adapter
->flags
))
2392 /* allocate rx/tx dma buffer & descriptors */
2393 err
= atl1c_setup_ring_resources(adapter
);
2397 err
= atl1c_up(adapter
);
2404 atl1c_free_irq(adapter
);
2405 atl1c_free_ring_resources(adapter
);
2406 atl1c_reset_mac(&adapter
->hw
);
2411 * atl1c_close - Disables a network interface
2412 * @netdev: network interface device structure
2414 * Returns 0, this is not allowed to fail
2416 * The close entry point is called when an interface is de-activated
2417 * by the OS. The hardware is still under the drivers control, but
2418 * needs to be disabled. A global MAC reset is issued to stop the
2419 * hardware, and all transmit and receive resources are freed.
2421 static int atl1c_close(struct net_device
*netdev
)
2423 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
2425 WARN_ON(test_bit(__AT_RESETTING
, &adapter
->flags
));
2426 set_bit(__AT_DOWN
, &adapter
->flags
);
2427 cancel_work_sync(&adapter
->common_task
);
2428 atl1c_down(adapter
);
2429 atl1c_free_ring_resources(adapter
);
2433 static int atl1c_suspend(struct device
*dev
)
2435 struct pci_dev
*pdev
= to_pci_dev(dev
);
2436 struct net_device
*netdev
= pci_get_drvdata(pdev
);
2437 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
2438 struct atl1c_hw
*hw
= &adapter
->hw
;
2439 u32 wufc
= adapter
->wol
;
2441 atl1c_disable_l0s_l1(hw
);
2442 if (netif_running(netdev
)) {
2443 WARN_ON(test_bit(__AT_RESETTING
, &adapter
->flags
));
2444 atl1c_down(adapter
);
2446 netif_device_detach(netdev
);
2449 if (atl1c_phy_to_ps_link(hw
) != 0)
2450 dev_dbg(&pdev
->dev
, "phy power saving failed");
2452 atl1c_power_saving(hw
, wufc
);
2457 #ifdef CONFIG_PM_SLEEP
2458 static int atl1c_resume(struct device
*dev
)
2460 struct pci_dev
*pdev
= to_pci_dev(dev
);
2461 struct net_device
*netdev
= pci_get_drvdata(pdev
);
2462 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
2464 AT_WRITE_REG(&adapter
->hw
, REG_WOL_CTRL
, 0);
2465 atl1c_reset_pcie(&adapter
->hw
, ATL1C_PCIE_L0S_L1_DISABLE
);
2467 atl1c_phy_reset(&adapter
->hw
);
2468 atl1c_reset_mac(&adapter
->hw
);
2469 atl1c_phy_init(&adapter
->hw
);
2472 AT_READ_REG(&adapter
->hw
, REG_PM_CTRLSTAT
, &pm_data
);
2473 pm_data
&= ~PM_CTRLSTAT_PME_EN
;
2474 AT_WRITE_REG(&adapter
->hw
, REG_PM_CTRLSTAT
, pm_data
);
2477 netif_device_attach(netdev
);
2478 if (netif_running(netdev
))
2485 static void atl1c_shutdown(struct pci_dev
*pdev
)
2487 struct net_device
*netdev
= pci_get_drvdata(pdev
);
2488 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
2490 atl1c_suspend(&pdev
->dev
);
2491 pci_wake_from_d3(pdev
, adapter
->wol
);
2492 pci_set_power_state(pdev
, PCI_D3hot
);
2495 static const struct net_device_ops atl1c_netdev_ops
= {
2496 .ndo_open
= atl1c_open
,
2497 .ndo_stop
= atl1c_close
,
2498 .ndo_validate_addr
= eth_validate_addr
,
2499 .ndo_start_xmit
= atl1c_xmit_frame
,
2500 .ndo_set_mac_address
= atl1c_set_mac_addr
,
2501 .ndo_set_rx_mode
= atl1c_set_multi
,
2502 .ndo_change_mtu
= atl1c_change_mtu
,
2503 .ndo_fix_features
= atl1c_fix_features
,
2504 .ndo_set_features
= atl1c_set_features
,
2505 .ndo_do_ioctl
= atl1c_ioctl
,
2506 .ndo_tx_timeout
= atl1c_tx_timeout
,
2507 .ndo_get_stats
= atl1c_get_stats
,
2508 #ifdef CONFIG_NET_POLL_CONTROLLER
2509 .ndo_poll_controller
= atl1c_netpoll
,
2513 static int atl1c_init_netdev(struct net_device
*netdev
, struct pci_dev
*pdev
)
2515 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
2516 pci_set_drvdata(pdev
, netdev
);
2518 netdev
->netdev_ops
= &atl1c_netdev_ops
;
2519 netdev
->watchdog_timeo
= AT_TX_WATCHDOG
;
2520 atl1c_set_ethtool_ops(netdev
);
2522 /* TODO: add when ready */
2523 netdev
->hw_features
= NETIF_F_SG
|
2525 NETIF_F_HW_VLAN_CTAG_RX
|
2528 netdev
->features
= netdev
->hw_features
|
2529 NETIF_F_HW_VLAN_CTAG_TX
;
2534 * atl1c_probe - Device Initialization Routine
2535 * @pdev: PCI device information struct
2536 * @ent: entry in atl1c_pci_tbl
2538 * Returns 0 on success, negative on failure
2540 * atl1c_probe initializes an adapter identified by a pci_dev structure.
2541 * The OS initialization, configuring of the adapter private structure,
2542 * and a hardware reset occur.
2544 static int atl1c_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
2546 struct net_device
*netdev
;
2547 struct atl1c_adapter
*adapter
;
2548 static int cards_found
;
2552 /* enable device (incl. PCI PM wakeup and hotplug setup) */
2553 err
= pci_enable_device_mem(pdev
);
2555 dev_err(&pdev
->dev
, "cannot enable PCI device\n");
2560 * The atl1c chip can DMA to 64-bit addresses, but it uses a single
2561 * shared register for the high 32 bits, so only a single, aligned,
2562 * 4 GB physical address range can be used at a time.
2564 * Supporting 64-bit DMA on this hardware is more trouble than it's
2565 * worth. It is far easier to limit to 32-bit DMA than update
2566 * various kernel subsystems to support the mechanics required by a
2567 * fixed-high-32-bit system.
2569 if ((pci_set_dma_mask(pdev
, DMA_BIT_MASK(32)) != 0) ||
2570 (pci_set_consistent_dma_mask(pdev
, DMA_BIT_MASK(32)) != 0)) {
2571 dev_err(&pdev
->dev
, "No usable DMA configuration,aborting\n");
2575 err
= pci_request_regions(pdev
, atl1c_driver_name
);
2577 dev_err(&pdev
->dev
, "cannot obtain PCI resources\n");
2581 pci_set_master(pdev
);
2583 netdev
= alloc_etherdev(sizeof(struct atl1c_adapter
));
2584 if (netdev
== NULL
) {
2586 goto err_alloc_etherdev
;
2589 err
= atl1c_init_netdev(netdev
, pdev
);
2591 dev_err(&pdev
->dev
, "init netdevice failed\n");
2592 goto err_init_netdev
;
2594 adapter
= netdev_priv(netdev
);
2595 adapter
->bd_number
= cards_found
;
2596 adapter
->netdev
= netdev
;
2597 adapter
->pdev
= pdev
;
2598 adapter
->hw
.adapter
= adapter
;
2599 adapter
->msg_enable
= netif_msg_init(-1, atl1c_default_msg
);
2600 adapter
->hw
.hw_addr
= ioremap(pci_resource_start(pdev
, 0), pci_resource_len(pdev
, 0));
2601 if (!adapter
->hw
.hw_addr
) {
2603 dev_err(&pdev
->dev
, "cannot map device registers\n");
2608 adapter
->mii
.dev
= netdev
;
2609 adapter
->mii
.mdio_read
= atl1c_mdio_read
;
2610 adapter
->mii
.mdio_write
= atl1c_mdio_write
;
2611 adapter
->mii
.phy_id_mask
= 0x1f;
2612 adapter
->mii
.reg_num_mask
= MDIO_CTRL_REG_MASK
;
2613 netif_napi_add(netdev
, &adapter
->napi
, atl1c_clean
, 64);
2614 setup_timer(&adapter
->phy_config_timer
, atl1c_phy_config
,
2615 (unsigned long)adapter
);
2616 /* setup the private structure */
2617 err
= atl1c_sw_init(adapter
);
2619 dev_err(&pdev
->dev
, "net device private data init failed\n");
2622 atl1c_reset_pcie(&adapter
->hw
, ATL1C_PCIE_L0S_L1_DISABLE
);
2624 /* Init GPHY as early as possible due to power saving issue */
2625 atl1c_phy_reset(&adapter
->hw
);
2627 err
= atl1c_reset_mac(&adapter
->hw
);
2633 /* reset the controller to
2634 * put the device in a known good starting state */
2635 err
= atl1c_phy_init(&adapter
->hw
);
2640 if (atl1c_read_mac_addr(&adapter
->hw
)) {
2641 /* got a random MAC address, set NET_ADDR_RANDOM to netdev */
2642 netdev
->addr_assign_type
= NET_ADDR_RANDOM
;
2644 memcpy(netdev
->dev_addr
, adapter
->hw
.mac_addr
, netdev
->addr_len
);
2645 if (netif_msg_probe(adapter
))
2646 dev_dbg(&pdev
->dev
, "mac address : %pM\n",
2647 adapter
->hw
.mac_addr
);
2649 atl1c_hw_set_mac_addr(&adapter
->hw
, adapter
->hw
.mac_addr
);
2650 INIT_WORK(&adapter
->common_task
, atl1c_common_task
);
2651 adapter
->work_event
= 0;
2652 err
= register_netdev(netdev
);
2654 dev_err(&pdev
->dev
, "register netdevice failed\n");
2658 if (netif_msg_probe(adapter
))
2659 dev_info(&pdev
->dev
, "version %s\n", ATL1C_DRV_VERSION
);
2666 iounmap(adapter
->hw
.hw_addr
);
2669 free_netdev(netdev
);
2671 pci_release_regions(pdev
);
2674 pci_disable_device(pdev
);
2679 * atl1c_remove - Device Removal Routine
2680 * @pdev: PCI device information struct
2682 * atl1c_remove is called by the PCI subsystem to alert the driver
2683 * that it should release a PCI device. The could be caused by a
2684 * Hot-Plug event, or because the driver is going to be removed from
2687 static void atl1c_remove(struct pci_dev
*pdev
)
2689 struct net_device
*netdev
= pci_get_drvdata(pdev
);
2690 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
2692 unregister_netdev(netdev
);
2693 /* restore permanent address */
2694 atl1c_hw_set_mac_addr(&adapter
->hw
, adapter
->hw
.perm_mac_addr
);
2695 atl1c_phy_disable(&adapter
->hw
);
2697 iounmap(adapter
->hw
.hw_addr
);
2699 pci_release_regions(pdev
);
2700 pci_disable_device(pdev
);
2701 free_netdev(netdev
);
2705 * atl1c_io_error_detected - called when PCI error is detected
2706 * @pdev: Pointer to PCI device
2707 * @state: The current pci connection state
2709 * This function is called after a PCI bus error affecting
2710 * this device has been detected.
2712 static pci_ers_result_t
atl1c_io_error_detected(struct pci_dev
*pdev
,
2713 pci_channel_state_t state
)
2715 struct net_device
*netdev
= pci_get_drvdata(pdev
);
2716 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
2718 netif_device_detach(netdev
);
2720 if (state
== pci_channel_io_perm_failure
)
2721 return PCI_ERS_RESULT_DISCONNECT
;
2723 if (netif_running(netdev
))
2724 atl1c_down(adapter
);
2726 pci_disable_device(pdev
);
2728 /* Request a slot slot reset. */
2729 return PCI_ERS_RESULT_NEED_RESET
;
2733 * atl1c_io_slot_reset - called after the pci bus has been reset.
2734 * @pdev: Pointer to PCI device
2736 * Restart the card from scratch, as if from a cold-boot. Implementation
2737 * resembles the first-half of the e1000_resume routine.
2739 static pci_ers_result_t
atl1c_io_slot_reset(struct pci_dev
*pdev
)
2741 struct net_device
*netdev
= pci_get_drvdata(pdev
);
2742 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
2744 if (pci_enable_device(pdev
)) {
2745 if (netif_msg_hw(adapter
))
2747 "Cannot re-enable PCI device after reset\n");
2748 return PCI_ERS_RESULT_DISCONNECT
;
2750 pci_set_master(pdev
);
2752 pci_enable_wake(pdev
, PCI_D3hot
, 0);
2753 pci_enable_wake(pdev
, PCI_D3cold
, 0);
2755 atl1c_reset_mac(&adapter
->hw
);
2757 return PCI_ERS_RESULT_RECOVERED
;
2761 * atl1c_io_resume - called when traffic can start flowing again.
2762 * @pdev: Pointer to PCI device
2764 * This callback is called when the error recovery driver tells us that
2765 * its OK to resume normal operation. Implementation resembles the
2766 * second-half of the atl1c_resume routine.
2768 static void atl1c_io_resume(struct pci_dev
*pdev
)
2770 struct net_device
*netdev
= pci_get_drvdata(pdev
);
2771 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
2773 if (netif_running(netdev
)) {
2774 if (atl1c_up(adapter
)) {
2775 if (netif_msg_hw(adapter
))
2777 "Cannot bring device back up after reset\n");
2782 netif_device_attach(netdev
);
2785 static const struct pci_error_handlers atl1c_err_handler
= {
2786 .error_detected
= atl1c_io_error_detected
,
2787 .slot_reset
= atl1c_io_slot_reset
,
2788 .resume
= atl1c_io_resume
,
2791 static SIMPLE_DEV_PM_OPS(atl1c_pm_ops
, atl1c_suspend
, atl1c_resume
);
2793 static struct pci_driver atl1c_driver
= {
2794 .name
= atl1c_driver_name
,
2795 .id_table
= atl1c_pci_tbl
,
2796 .probe
= atl1c_probe
,
2797 .remove
= atl1c_remove
,
2798 .shutdown
= atl1c_shutdown
,
2799 .err_handler
= &atl1c_err_handler
,
2800 .driver
.pm
= &atl1c_pm_ops
,
2803 module_pci_driver(atl1c_driver
);