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 "1.0.0.1-NAPI"
25 char atl1c_driver_name
[] = "atl1c";
26 char atl1c_driver_version
[] = ATL1C_DRV_VERSION
;
27 #define PCI_DEVICE_ID_ATTANSIC_L2C 0x1062
28 #define PCI_DEVICE_ID_ATTANSIC_L1C 0x1063
30 * atl1c_pci_tbl - PCI Device ID Table
32 * Wildcard entries (PCI_ANY_ID) should come last
33 * Last entry must be all 0s
35 * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
36 * Class, Class Mask, private data (not used) }
38 static struct pci_device_id atl1c_pci_tbl
[] = {
39 {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC
, PCI_DEVICE_ID_ATTANSIC_L1C
)},
40 {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC
, PCI_DEVICE_ID_ATTANSIC_L2C
)},
41 /* required last entry */
44 MODULE_DEVICE_TABLE(pci
, atl1c_pci_tbl
);
46 MODULE_AUTHOR("Jie Yang <jie.yang@atheros.com>");
47 MODULE_DESCRIPTION("Atheros 1000M Ethernet Network Driver");
48 MODULE_LICENSE("GPL");
49 MODULE_VERSION(ATL1C_DRV_VERSION
);
51 static int atl1c_stop_mac(struct atl1c_hw
*hw
);
52 static void atl1c_enable_rx_ctrl(struct atl1c_hw
*hw
);
53 static void atl1c_enable_tx_ctrl(struct atl1c_hw
*hw
);
54 static void atl1c_disable_l0s_l1(struct atl1c_hw
*hw
);
55 static void atl1c_set_aspm(struct atl1c_hw
*hw
, bool linkup
);
56 static void atl1c_setup_mac_ctrl(struct atl1c_adapter
*adapter
);
57 static void atl1c_clean_rx_irq(struct atl1c_adapter
*adapter
, u8 que
,
58 int *work_done
, int work_to_do
);
60 static const u16 atl1c_pay_load_size
[] = {
61 128, 256, 512, 1024, 2048, 4096,
64 static const u16 atl1c_rfd_prod_idx_regs
[AT_MAX_RECEIVE_QUEUE
] =
72 static const u16 atl1c_rfd_addr_lo_regs
[AT_MAX_RECEIVE_QUEUE
] =
74 REG_RFD0_HEAD_ADDR_LO
,
75 REG_RFD1_HEAD_ADDR_LO
,
76 REG_RFD2_HEAD_ADDR_LO
,
80 static const u16 atl1c_rrd_addr_lo_regs
[AT_MAX_RECEIVE_QUEUE
] =
82 REG_RRD0_HEAD_ADDR_LO
,
83 REG_RRD1_HEAD_ADDR_LO
,
84 REG_RRD2_HEAD_ADDR_LO
,
88 static const u32 atl1c_default_msg
= NETIF_MSG_DRV
| NETIF_MSG_PROBE
|
89 NETIF_MSG_LINK
| NETIF_MSG_TIMER
| NETIF_MSG_IFDOWN
| NETIF_MSG_IFUP
;
92 * atl1c_init_pcie - init PCIE module
94 static void atl1c_reset_pcie(struct atl1c_hw
*hw
, u32 flag
)
98 struct pci_dev
*pdev
= hw
->adapter
->pdev
;
100 AT_READ_REG(hw
, PCI_COMMAND
, &pci_cmd
);
101 pci_cmd
&= ~PCI_COMMAND_INTX_DISABLE
;
102 pci_cmd
|= (PCI_COMMAND_MEMORY
| PCI_COMMAND_MASTER
|
104 AT_WRITE_REG(hw
, PCI_COMMAND
, pci_cmd
);
107 * Clear any PowerSaveing Settings
109 pci_enable_wake(pdev
, PCI_D3hot
, 0);
110 pci_enable_wake(pdev
, PCI_D3cold
, 0);
113 * Mask some pcie error bits
115 AT_READ_REG(hw
, REG_PCIE_UC_SEVERITY
, &data
);
116 data
&= ~PCIE_UC_SERVRITY_DLP
;
117 data
&= ~PCIE_UC_SERVRITY_FCP
;
118 AT_WRITE_REG(hw
, REG_PCIE_UC_SEVERITY
, data
);
120 if (flag
& ATL1C_PCIE_L0S_L1_DISABLE
)
121 atl1c_disable_l0s_l1(hw
);
122 if (flag
& ATL1C_PCIE_PHY_RESET
)
123 AT_WRITE_REG(hw
, REG_GPHY_CTRL
, GPHY_CTRL_DEFAULT
);
125 AT_WRITE_REG(hw
, REG_GPHY_CTRL
,
126 GPHY_CTRL_DEFAULT
| GPHY_CTRL_EXT_RESET
);
132 * atl1c_irq_enable - Enable default interrupt generation settings
133 * @adapter: board private structure
135 static inline void atl1c_irq_enable(struct atl1c_adapter
*adapter
)
137 if (likely(atomic_dec_and_test(&adapter
->irq_sem
))) {
138 AT_WRITE_REG(&adapter
->hw
, REG_ISR
, 0x7FFFFFFF);
139 AT_WRITE_REG(&adapter
->hw
, REG_IMR
, adapter
->hw
.intr_mask
);
140 AT_WRITE_FLUSH(&adapter
->hw
);
145 * atl1c_irq_disable - Mask off interrupt generation on the NIC
146 * @adapter: board private structure
148 static inline void atl1c_irq_disable(struct atl1c_adapter
*adapter
)
150 atomic_inc(&adapter
->irq_sem
);
151 AT_WRITE_REG(&adapter
->hw
, REG_IMR
, 0);
152 AT_WRITE_FLUSH(&adapter
->hw
);
153 synchronize_irq(adapter
->pdev
->irq
);
157 * atl1c_irq_reset - reset interrupt confiure on the NIC
158 * @adapter: board private structure
160 static inline void atl1c_irq_reset(struct atl1c_adapter
*adapter
)
162 atomic_set(&adapter
->irq_sem
, 1);
163 atl1c_irq_enable(adapter
);
167 * atl1c_phy_config - Timer Call-back
168 * @data: pointer to netdev cast into an unsigned long
170 static void atl1c_phy_config(unsigned long data
)
172 struct atl1c_adapter
*adapter
= (struct atl1c_adapter
*) data
;
173 struct atl1c_hw
*hw
= &adapter
->hw
;
176 spin_lock_irqsave(&adapter
->mdio_lock
, flags
);
177 atl1c_restart_autoneg(hw
);
178 spin_unlock_irqrestore(&adapter
->mdio_lock
, flags
);
181 void atl1c_reinit_locked(struct atl1c_adapter
*adapter
)
184 WARN_ON(in_interrupt());
187 clear_bit(__AT_RESETTING
, &adapter
->flags
);
190 static void atl1c_reset_task(struct work_struct
*work
)
192 struct atl1c_adapter
*adapter
;
193 struct net_device
*netdev
;
195 adapter
= container_of(work
, struct atl1c_adapter
, reset_task
);
196 netdev
= adapter
->netdev
;
198 netif_device_detach(netdev
);
201 netif_device_attach(netdev
);
204 static void atl1c_check_link_status(struct atl1c_adapter
*adapter
)
206 struct atl1c_hw
*hw
= &adapter
->hw
;
207 struct net_device
*netdev
= adapter
->netdev
;
208 struct pci_dev
*pdev
= adapter
->pdev
;
211 u16 speed
, duplex
, phy_data
;
213 spin_lock_irqsave(&adapter
->mdio_lock
, flags
);
214 /* MII_BMSR must read twise */
215 atl1c_read_phy_reg(hw
, MII_BMSR
, &phy_data
);
216 atl1c_read_phy_reg(hw
, MII_BMSR
, &phy_data
);
217 spin_unlock_irqrestore(&adapter
->mdio_lock
, flags
);
219 if ((phy_data
& BMSR_LSTATUS
) == 0) {
221 if (netif_carrier_ok(netdev
)) {
222 hw
->hibernate
= true;
223 atl1c_set_aspm(hw
, false);
224 if (atl1c_stop_mac(hw
) != 0)
225 if (netif_msg_hw(adapter
))
227 "stop mac failed\n");
229 netif_carrier_off(netdev
);
232 hw
->hibernate
= false;
233 spin_lock_irqsave(&adapter
->mdio_lock
, flags
);
234 err
= atl1c_get_speed_and_duplex(hw
, &speed
, &duplex
);
235 spin_unlock_irqrestore(&adapter
->mdio_lock
, flags
);
238 /* link result is our setting */
239 if (adapter
->link_speed
!= speed
||
240 adapter
->link_duplex
!= duplex
) {
241 adapter
->link_speed
= speed
;
242 adapter
->link_duplex
= duplex
;
243 atl1c_enable_tx_ctrl(hw
);
244 atl1c_enable_rx_ctrl(hw
);
245 atl1c_setup_mac_ctrl(adapter
);
246 atl1c_set_aspm(hw
, true);
247 if (netif_msg_link(adapter
))
249 "%s: %s NIC Link is Up<%d Mbps %s>\n",
250 atl1c_driver_name
, netdev
->name
,
252 adapter
->link_duplex
== FULL_DUPLEX
?
253 "Full Duplex" : "Half Duplex");
255 if (!netif_carrier_ok(netdev
))
256 netif_carrier_on(netdev
);
261 * atl1c_link_chg_task - deal with link change event Out of interrupt context
262 * @netdev: network interface device structure
264 static void atl1c_link_chg_task(struct work_struct
*work
)
266 struct atl1c_adapter
*adapter
;
268 adapter
= container_of(work
, struct atl1c_adapter
, link_chg_task
);
269 atl1c_check_link_status(adapter
);
272 static void atl1c_link_chg_event(struct atl1c_adapter
*adapter
)
274 struct net_device
*netdev
= adapter
->netdev
;
275 struct pci_dev
*pdev
= adapter
->pdev
;
279 spin_lock(&adapter
->mdio_lock
);
280 atl1c_read_phy_reg(&adapter
->hw
, MII_BMSR
, &phy_data
);
281 atl1c_read_phy_reg(&adapter
->hw
, MII_BMSR
, &phy_data
);
282 spin_unlock(&adapter
->mdio_lock
);
283 link_up
= phy_data
& BMSR_LSTATUS
;
284 /* notify upper layer link down ASAP */
286 if (netif_carrier_ok(netdev
)) {
287 /* old link state: Up */
288 netif_carrier_off(netdev
);
289 if (netif_msg_link(adapter
))
291 "%s: %s NIC Link is Down\n",
292 atl1c_driver_name
, netdev
->name
);
293 adapter
->link_speed
= SPEED_0
;
296 schedule_work(&adapter
->link_chg_task
);
299 static void atl1c_del_timer(struct atl1c_adapter
*adapter
)
301 del_timer_sync(&adapter
->phy_config_timer
);
304 static void atl1c_cancel_work(struct atl1c_adapter
*adapter
)
306 cancel_work_sync(&adapter
->reset_task
);
307 cancel_work_sync(&adapter
->link_chg_task
);
311 * atl1c_tx_timeout - Respond to a Tx Hang
312 * @netdev: network interface device structure
314 static void atl1c_tx_timeout(struct net_device
*netdev
)
316 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
318 /* Do the reset outside of interrupt context */
319 schedule_work(&adapter
->reset_task
);
323 * atl1c_set_multi - Multicast and Promiscuous mode set
324 * @netdev: network interface device structure
326 * The set_multi entry point is called whenever the multicast address
327 * list or the network interface flags are updated. This routine is
328 * responsible for configuring the hardware for proper multicast,
329 * promiscuous mode, and all-multi behavior.
331 static void atl1c_set_multi(struct net_device
*netdev
)
333 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
334 struct atl1c_hw
*hw
= &adapter
->hw
;
335 struct dev_mc_list
*mc_ptr
;
339 /* Check for Promiscuous and All Multicast modes */
340 AT_READ_REG(hw
, REG_MAC_CTRL
, &mac_ctrl_data
);
342 if (netdev
->flags
& IFF_PROMISC
) {
343 mac_ctrl_data
|= MAC_CTRL_PROMIS_EN
;
344 } else if (netdev
->flags
& IFF_ALLMULTI
) {
345 mac_ctrl_data
|= MAC_CTRL_MC_ALL_EN
;
346 mac_ctrl_data
&= ~MAC_CTRL_PROMIS_EN
;
348 mac_ctrl_data
&= ~(MAC_CTRL_PROMIS_EN
| MAC_CTRL_MC_ALL_EN
);
351 AT_WRITE_REG(hw
, REG_MAC_CTRL
, mac_ctrl_data
);
353 /* clear the old settings from the multicast hash table */
354 AT_WRITE_REG(hw
, REG_RX_HASH_TABLE
, 0);
355 AT_WRITE_REG_ARRAY(hw
, REG_RX_HASH_TABLE
, 1, 0);
357 /* comoute mc addresses' hash value ,and put it into hash table */
358 for (mc_ptr
= netdev
->mc_list
; mc_ptr
; mc_ptr
= mc_ptr
->next
) {
359 hash_value
= atl1c_hash_mc_addr(hw
, mc_ptr
->dmi_addr
);
360 atl1c_hash_set(hw
, hash_value
);
364 static void atl1c_vlan_rx_register(struct net_device
*netdev
,
365 struct vlan_group
*grp
)
367 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
368 struct pci_dev
*pdev
= adapter
->pdev
;
369 u32 mac_ctrl_data
= 0;
371 if (netif_msg_pktdata(adapter
))
372 dev_dbg(&pdev
->dev
, "atl1c_vlan_rx_register\n");
374 atl1c_irq_disable(adapter
);
376 adapter
->vlgrp
= grp
;
377 AT_READ_REG(&adapter
->hw
, REG_MAC_CTRL
, &mac_ctrl_data
);
380 /* enable VLAN tag insert/strip */
381 mac_ctrl_data
|= MAC_CTRL_RMV_VLAN
;
383 /* disable VLAN tag insert/strip */
384 mac_ctrl_data
&= ~MAC_CTRL_RMV_VLAN
;
387 AT_WRITE_REG(&adapter
->hw
, REG_MAC_CTRL
, mac_ctrl_data
);
388 atl1c_irq_enable(adapter
);
391 static void atl1c_restore_vlan(struct atl1c_adapter
*adapter
)
393 struct pci_dev
*pdev
= adapter
->pdev
;
395 if (netif_msg_pktdata(adapter
))
396 dev_dbg(&pdev
->dev
, "atl1c_restore_vlan !");
397 atl1c_vlan_rx_register(adapter
->netdev
, adapter
->vlgrp
);
400 * atl1c_set_mac - Change the Ethernet Address of the NIC
401 * @netdev: network interface device structure
402 * @p: pointer to an address structure
404 * Returns 0 on success, negative on failure
406 static int atl1c_set_mac_addr(struct net_device
*netdev
, void *p
)
408 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
409 struct sockaddr
*addr
= p
;
411 if (!is_valid_ether_addr(addr
->sa_data
))
412 return -EADDRNOTAVAIL
;
414 if (netif_running(netdev
))
417 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
418 memcpy(adapter
->hw
.mac_addr
, addr
->sa_data
, netdev
->addr_len
);
420 atl1c_hw_set_mac_addr(&adapter
->hw
);
425 static void atl1c_set_rxbufsize(struct atl1c_adapter
*adapter
,
426 struct net_device
*dev
)
430 adapter
->rx_buffer_len
= mtu
> AT_RX_BUF_SIZE
?
431 roundup(mtu
+ ETH_HLEN
+ ETH_FCS_LEN
+ VLAN_HLEN
, 8) : AT_RX_BUF_SIZE
;
434 * atl1c_change_mtu - Change the Maximum Transfer Unit
435 * @netdev: network interface device structure
436 * @new_mtu: new value for maximum frame size
438 * Returns 0 on success, negative on failure
440 static int atl1c_change_mtu(struct net_device
*netdev
, int new_mtu
)
442 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
443 int old_mtu
= netdev
->mtu
;
444 int max_frame
= new_mtu
+ ETH_HLEN
+ ETH_FCS_LEN
+ VLAN_HLEN
;
446 if ((max_frame
< ETH_ZLEN
+ ETH_FCS_LEN
) ||
447 (max_frame
> MAX_JUMBO_FRAME_SIZE
)) {
448 if (netif_msg_link(adapter
))
449 dev_warn(&adapter
->pdev
->dev
, "invalid MTU setting\n");
453 if (old_mtu
!= new_mtu
&& netif_running(netdev
)) {
454 while (test_and_set_bit(__AT_RESETTING
, &adapter
->flags
))
456 netdev
->mtu
= new_mtu
;
457 adapter
->hw
.max_frame_size
= new_mtu
;
458 atl1c_set_rxbufsize(adapter
, netdev
);
461 clear_bit(__AT_RESETTING
, &adapter
->flags
);
462 if (adapter
->hw
.ctrl_flags
& ATL1C_FPGA_VERSION
) {
465 AT_READ_REG(&adapter
->hw
, 0x1414, &phy_data
);
466 phy_data
|= 0x10000000;
467 AT_WRITE_REG(&adapter
->hw
, 0x1414, phy_data
);
475 * caller should hold mdio_lock
477 static int atl1c_mdio_read(struct net_device
*netdev
, int phy_id
, int reg_num
)
479 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
482 atl1c_read_phy_reg(&adapter
->hw
, reg_num
& MDIO_REG_ADDR_MASK
, &result
);
486 static void atl1c_mdio_write(struct net_device
*netdev
, int phy_id
,
487 int reg_num
, int val
)
489 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
491 atl1c_write_phy_reg(&adapter
->hw
, reg_num
& MDIO_REG_ADDR_MASK
, val
);
500 static int atl1c_mii_ioctl(struct net_device
*netdev
,
501 struct ifreq
*ifr
, int cmd
)
503 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
504 struct pci_dev
*pdev
= adapter
->pdev
;
505 struct mii_ioctl_data
*data
= if_mii(ifr
);
509 if (!netif_running(netdev
))
512 spin_lock_irqsave(&adapter
->mdio_lock
, flags
);
519 if (!capable(CAP_NET_ADMIN
)) {
523 if (atl1c_read_phy_reg(&adapter
->hw
, data
->reg_num
& 0x1F,
531 if (!capable(CAP_NET_ADMIN
)) {
535 if (data
->reg_num
& ~(0x1F)) {
540 dev_dbg(&pdev
->dev
, "<atl1c_mii_ioctl> write %x %x",
541 data
->reg_num
, data
->val_in
);
542 if (atl1c_write_phy_reg(&adapter
->hw
,
543 data
->reg_num
, data
->val_in
)) {
550 retval
= -EOPNOTSUPP
;
554 spin_unlock_irqrestore(&adapter
->mdio_lock
, flags
);
564 static int atl1c_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
570 return atl1c_mii_ioctl(netdev
, ifr
, cmd
);
577 * atl1c_alloc_queues - Allocate memory for all rings
578 * @adapter: board private structure to initialize
581 static int __devinit
atl1c_alloc_queues(struct atl1c_adapter
*adapter
)
586 static void atl1c_set_mac_type(struct atl1c_hw
*hw
)
588 switch (hw
->device_id
) {
589 case PCI_DEVICE_ID_ATTANSIC_L2C
:
590 hw
->nic_type
= athr_l2c
;
593 case PCI_DEVICE_ID_ATTANSIC_L1C
:
594 hw
->nic_type
= athr_l1c
;
602 static int atl1c_setup_mac_funcs(struct atl1c_hw
*hw
)
607 atl1c_set_mac_type(hw
);
608 AT_READ_REG(hw
, REG_PHY_STATUS
, &phy_status_data
);
609 AT_READ_REG(hw
, REG_LINK_CTRL
, &link_ctrl_data
);
611 hw
->ctrl_flags
= ATL1C_INTR_CLEAR_ON_READ
|
612 ATL1C_INTR_MODRT_ENABLE
|
613 ATL1C_RX_IPV6_CHKSUM
|
614 ATL1C_TXQ_MODE_ENHANCE
;
615 if (link_ctrl_data
& LINK_CTRL_L0S_EN
)
616 hw
->ctrl_flags
|= ATL1C_ASPM_L0S_SUPPORT
;
617 if (link_ctrl_data
& LINK_CTRL_L1_EN
)
618 hw
->ctrl_flags
|= ATL1C_ASPM_L1_SUPPORT
;
620 if (hw
->nic_type
== athr_l1c
) {
621 hw
->ctrl_flags
|= ATL1C_ASPM_CTRL_MON
;
622 hw
->ctrl_flags
|= ATL1C_LINK_CAP_1000M
;
627 * atl1c_sw_init - Initialize general software structures (struct atl1c_adapter)
628 * @adapter: board private structure to initialize
630 * atl1c_sw_init initializes the Adapter private data structure.
631 * Fields are initialized based on PCI device information and
632 * OS network device settings (MTU size).
634 static int __devinit
atl1c_sw_init(struct atl1c_adapter
*adapter
)
636 struct atl1c_hw
*hw
= &adapter
->hw
;
637 struct pci_dev
*pdev
= adapter
->pdev
;
640 adapter
->link_speed
= SPEED_0
;
641 adapter
->link_duplex
= FULL_DUPLEX
;
642 adapter
->num_rx_queues
= AT_DEF_RECEIVE_QUEUE
;
643 adapter
->tpd_ring
[0].count
= 1024;
644 adapter
->rfd_ring
[0].count
= 512;
646 hw
->vendor_id
= pdev
->vendor
;
647 hw
->device_id
= pdev
->device
;
648 hw
->subsystem_vendor_id
= pdev
->subsystem_vendor
;
649 hw
->subsystem_id
= pdev
->subsystem_device
;
651 /* before link up, we assume hibernate is true */
652 hw
->hibernate
= true;
653 hw
->media_type
= MEDIA_TYPE_AUTO_SENSOR
;
654 if (atl1c_setup_mac_funcs(hw
) != 0) {
655 dev_err(&pdev
->dev
, "set mac function pointers failed\n");
658 hw
->intr_mask
= IMR_NORMAL_MASK
;
659 hw
->phy_configured
= false;
660 hw
->preamble_len
= 7;
661 hw
->max_frame_size
= adapter
->netdev
->mtu
;
662 if (adapter
->num_rx_queues
< 2) {
663 hw
->rss_type
= atl1c_rss_disable
;
664 hw
->rss_mode
= atl1c_rss_mode_disable
;
666 hw
->rss_type
= atl1c_rss_ipv4
;
667 hw
->rss_mode
= atl1c_rss_mul_que_mul_int
;
668 hw
->rss_hash_bits
= 16;
670 hw
->autoneg_advertised
= ADVERTISED_Autoneg
;
671 hw
->indirect_tab
= 0xE4E4E4E4;
674 hw
->ict
= 50000; /* 100ms */
675 hw
->smb_timer
= 200000; /* 400ms */
677 hw
->cmb_tx_timer
= 1; /* 2 us */
683 hw
->dma_order
= atl1c_dma_ord_out
;
684 hw
->dmar_block
= atl1c_dma_req_1024
;
685 hw
->dmaw_block
= atl1c_dma_req_1024
;
686 hw
->dmar_dly_cnt
= 15;
687 hw
->dmaw_dly_cnt
= 4;
689 if (atl1c_alloc_queues(adapter
)) {
690 dev_err(&pdev
->dev
, "Unable to allocate memory for queues\n");
694 atl1c_set_rxbufsize(adapter
, adapter
->netdev
);
695 atomic_set(&adapter
->irq_sem
, 1);
696 spin_lock_init(&adapter
->mdio_lock
);
697 spin_lock_init(&adapter
->tx_lock
);
698 set_bit(__AT_DOWN
, &adapter
->flags
);
704 * atl1c_clean_tx_ring - Free Tx-skb
705 * @adapter: board private structure
707 static void atl1c_clean_tx_ring(struct atl1c_adapter
*adapter
,
708 enum atl1c_trans_queue type
)
710 struct atl1c_tpd_ring
*tpd_ring
= &adapter
->tpd_ring
[type
];
711 struct atl1c_buffer
*buffer_info
;
712 struct pci_dev
*pdev
= adapter
->pdev
;
713 u16 index
, ring_count
;
715 ring_count
= tpd_ring
->count
;
716 for (index
= 0; index
< ring_count
; index
++) {
717 buffer_info
= &tpd_ring
->buffer_info
[index
];
718 if (buffer_info
->state
== ATL1_BUFFER_FREE
)
720 if (buffer_info
->dma
)
721 pci_unmap_single(pdev
, buffer_info
->dma
,
724 if (buffer_info
->skb
)
725 dev_kfree_skb(buffer_info
->skb
);
726 buffer_info
->dma
= 0;
727 buffer_info
->skb
= NULL
;
728 buffer_info
->state
= ATL1_BUFFER_FREE
;
731 /* Zero out Tx-buffers */
732 memset(tpd_ring
->desc
, 0, sizeof(struct atl1c_tpd_desc
) *
734 atomic_set(&tpd_ring
->next_to_clean
, 0);
735 tpd_ring
->next_to_use
= 0;
739 * atl1c_clean_rx_ring - Free rx-reservation skbs
740 * @adapter: board private structure
742 static void atl1c_clean_rx_ring(struct atl1c_adapter
*adapter
)
744 struct atl1c_rfd_ring
*rfd_ring
= adapter
->rfd_ring
;
745 struct atl1c_rrd_ring
*rrd_ring
= adapter
->rrd_ring
;
746 struct atl1c_buffer
*buffer_info
;
747 struct pci_dev
*pdev
= adapter
->pdev
;
750 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
751 for (j
= 0; j
< rfd_ring
[i
].count
; j
++) {
752 buffer_info
= &rfd_ring
[i
].buffer_info
[j
];
753 if (buffer_info
->state
== ATL1_BUFFER_FREE
)
755 if (buffer_info
->dma
)
756 pci_unmap_single(pdev
, buffer_info
->dma
,
759 if (buffer_info
->skb
)
760 dev_kfree_skb(buffer_info
->skb
);
761 buffer_info
->state
= ATL1_BUFFER_FREE
;
762 buffer_info
->skb
= NULL
;
764 /* zero out the descriptor ring */
765 memset(rfd_ring
[i
].desc
, 0, rfd_ring
[i
].size
);
766 rfd_ring
[i
].next_to_clean
= 0;
767 rfd_ring
[i
].next_to_use
= 0;
768 rrd_ring
[i
].next_to_use
= 0;
769 rrd_ring
[i
].next_to_clean
= 0;
774 * Read / Write Ptr Initialize:
776 static void atl1c_init_ring_ptrs(struct atl1c_adapter
*adapter
)
778 struct atl1c_tpd_ring
*tpd_ring
= adapter
->tpd_ring
;
779 struct atl1c_rfd_ring
*rfd_ring
= adapter
->rfd_ring
;
780 struct atl1c_rrd_ring
*rrd_ring
= adapter
->rrd_ring
;
781 struct atl1c_buffer
*buffer_info
;
784 for (i
= 0; i
< AT_MAX_TRANSMIT_QUEUE
; i
++) {
785 tpd_ring
[i
].next_to_use
= 0;
786 atomic_set(&tpd_ring
[i
].next_to_clean
, 0);
787 buffer_info
= tpd_ring
[i
].buffer_info
;
788 for (j
= 0; j
< tpd_ring
->count
; j
++)
789 buffer_info
[i
].state
= ATL1_BUFFER_FREE
;
791 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
792 rfd_ring
[i
].next_to_use
= 0;
793 rfd_ring
[i
].next_to_clean
= 0;
794 rrd_ring
[i
].next_to_use
= 0;
795 rrd_ring
[i
].next_to_clean
= 0;
796 for (j
= 0; j
< rfd_ring
[i
].count
; j
++) {
797 buffer_info
= &rfd_ring
[i
].buffer_info
[j
];
798 buffer_info
->state
= ATL1_BUFFER_FREE
;
804 * atl1c_free_ring_resources - Free Tx / RX descriptor Resources
805 * @adapter: board private structure
807 * Free all transmit software resources
809 static void atl1c_free_ring_resources(struct atl1c_adapter
*adapter
)
811 struct pci_dev
*pdev
= adapter
->pdev
;
813 pci_free_consistent(pdev
, adapter
->ring_header
.size
,
814 adapter
->ring_header
.desc
,
815 adapter
->ring_header
.dma
);
816 adapter
->ring_header
.desc
= NULL
;
818 /* Note: just free tdp_ring.buffer_info,
819 * it contain rfd_ring.buffer_info, do not double free */
820 if (adapter
->tpd_ring
[0].buffer_info
) {
821 kfree(adapter
->tpd_ring
[0].buffer_info
);
822 adapter
->tpd_ring
[0].buffer_info
= NULL
;
827 * atl1c_setup_mem_resources - allocate Tx / RX descriptor resources
828 * @adapter: board private structure
830 * Return 0 on success, negative on failure
832 static int atl1c_setup_ring_resources(struct atl1c_adapter
*adapter
)
834 struct pci_dev
*pdev
= adapter
->pdev
;
835 struct atl1c_tpd_ring
*tpd_ring
= adapter
->tpd_ring
;
836 struct atl1c_rfd_ring
*rfd_ring
= adapter
->rfd_ring
;
837 struct atl1c_rrd_ring
*rrd_ring
= adapter
->rrd_ring
;
838 struct atl1c_ring_header
*ring_header
= &adapter
->ring_header
;
839 int num_rx_queues
= adapter
->num_rx_queues
;
843 int rx_desc_count
= 0;
846 rrd_ring
[0].count
= rfd_ring
[0].count
;
847 for (i
= 1; i
< AT_MAX_TRANSMIT_QUEUE
; i
++)
848 tpd_ring
[i
].count
= tpd_ring
[0].count
;
850 for (i
= 1; i
< adapter
->num_rx_queues
; i
++)
851 rfd_ring
[i
].count
= rrd_ring
[i
].count
= rfd_ring
[0].count
;
853 /* 2 tpd queue, one high priority queue,
854 * another normal priority queue */
855 size
= sizeof(struct atl1c_buffer
) * (tpd_ring
->count
* 2 +
856 rfd_ring
->count
* num_rx_queues
);
857 tpd_ring
->buffer_info
= kzalloc(size
, GFP_KERNEL
);
858 if (unlikely(!tpd_ring
->buffer_info
)) {
859 dev_err(&pdev
->dev
, "kzalloc failed, size = %d\n",
863 for (i
= 0; i
< AT_MAX_TRANSMIT_QUEUE
; i
++) {
864 tpd_ring
[i
].buffer_info
=
865 (struct atl1c_buffer
*) (tpd_ring
->buffer_info
+ count
);
866 count
+= tpd_ring
[i
].count
;
869 for (i
= 0; i
< num_rx_queues
; i
++) {
870 rfd_ring
[i
].buffer_info
=
871 (struct atl1c_buffer
*) (tpd_ring
->buffer_info
+ count
);
872 count
+= rfd_ring
[i
].count
;
873 rx_desc_count
+= rfd_ring
[i
].count
;
876 * real ring DMA buffer
877 * each ring/block may need up to 8 bytes for alignment, hence the
878 * additional bytes tacked onto the end.
880 ring_header
->size
= size
=
881 sizeof(struct atl1c_tpd_desc
) * tpd_ring
->count
* 2 +
882 sizeof(struct atl1c_rx_free_desc
) * rx_desc_count
+
883 sizeof(struct atl1c_recv_ret_status
) * rx_desc_count
+
884 sizeof(struct atl1c_hw_stats
) +
885 8 * 4 + 8 * 2 * num_rx_queues
;
887 ring_header
->desc
= pci_alloc_consistent(pdev
, ring_header
->size
,
889 if (unlikely(!ring_header
->desc
)) {
890 dev_err(&pdev
->dev
, "pci_alloc_consistend failed\n");
893 memset(ring_header
->desc
, 0, ring_header
->size
);
896 tpd_ring
[0].dma
= roundup(ring_header
->dma
, 8);
897 offset
= tpd_ring
[0].dma
- ring_header
->dma
;
898 for (i
= 0; i
< AT_MAX_TRANSMIT_QUEUE
; i
++) {
899 tpd_ring
[i
].dma
= ring_header
->dma
+ offset
;
900 tpd_ring
[i
].desc
= (u8
*) ring_header
->desc
+ offset
;
902 sizeof(struct atl1c_tpd_desc
) * tpd_ring
[i
].count
;
903 offset
+= roundup(tpd_ring
[i
].size
, 8);
906 for (i
= 0; i
< num_rx_queues
; i
++) {
907 rfd_ring
[i
].dma
= ring_header
->dma
+ offset
;
908 rfd_ring
[i
].desc
= (u8
*) ring_header
->desc
+ offset
;
909 rfd_ring
[i
].size
= sizeof(struct atl1c_rx_free_desc
) *
911 offset
+= roundup(rfd_ring
[i
].size
, 8);
915 for (i
= 0; i
< num_rx_queues
; i
++) {
916 rrd_ring
[i
].dma
= ring_header
->dma
+ offset
;
917 rrd_ring
[i
].desc
= (u8
*) ring_header
->desc
+ offset
;
918 rrd_ring
[i
].size
= sizeof(struct atl1c_recv_ret_status
) *
920 offset
+= roundup(rrd_ring
[i
].size
, 8);
923 adapter
->smb
.dma
= ring_header
->dma
+ offset
;
924 adapter
->smb
.smb
= (u8
*)ring_header
->desc
+ offset
;
928 kfree(tpd_ring
->buffer_info
);
932 static void atl1c_configure_des_ring(struct atl1c_adapter
*adapter
)
934 struct atl1c_hw
*hw
= &adapter
->hw
;
935 struct atl1c_rfd_ring
*rfd_ring
= (struct atl1c_rfd_ring
*)
937 struct atl1c_rrd_ring
*rrd_ring
= (struct atl1c_rrd_ring
*)
939 struct atl1c_tpd_ring
*tpd_ring
= (struct atl1c_tpd_ring
*)
941 struct atl1c_cmb
*cmb
= (struct atl1c_cmb
*) &adapter
->cmb
;
942 struct atl1c_smb
*smb
= (struct atl1c_smb
*) &adapter
->smb
;
946 AT_WRITE_REG(hw
, REG_TX_BASE_ADDR_HI
,
947 (u32
)((tpd_ring
[atl1c_trans_normal
].dma
&
948 AT_DMA_HI_ADDR_MASK
) >> 32));
949 /* just enable normal priority TX queue */
950 AT_WRITE_REG(hw
, REG_NTPD_HEAD_ADDR_LO
,
951 (u32
)(tpd_ring
[atl1c_trans_normal
].dma
&
952 AT_DMA_LO_ADDR_MASK
));
953 AT_WRITE_REG(hw
, REG_HTPD_HEAD_ADDR_LO
,
954 (u32
)(tpd_ring
[atl1c_trans_high
].dma
&
955 AT_DMA_LO_ADDR_MASK
));
956 AT_WRITE_REG(hw
, REG_TPD_RING_SIZE
,
957 (u32
)(tpd_ring
[0].count
& TPD_RING_SIZE_MASK
));
961 AT_WRITE_REG(hw
, REG_RX_BASE_ADDR_HI
,
962 (u32
)((rfd_ring
[0].dma
& AT_DMA_HI_ADDR_MASK
) >> 32));
963 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
964 AT_WRITE_REG(hw
, atl1c_rfd_addr_lo_regs
[i
],
965 (u32
)(rfd_ring
[i
].dma
& AT_DMA_LO_ADDR_MASK
));
967 AT_WRITE_REG(hw
, REG_RFD_RING_SIZE
,
968 rfd_ring
[0].count
& RFD_RING_SIZE_MASK
);
969 AT_WRITE_REG(hw
, REG_RX_BUF_SIZE
,
970 adapter
->rx_buffer_len
& RX_BUF_SIZE_MASK
);
973 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
974 AT_WRITE_REG(hw
, atl1c_rrd_addr_lo_regs
[i
],
975 (u32
)(rrd_ring
[i
].dma
& AT_DMA_LO_ADDR_MASK
));
976 AT_WRITE_REG(hw
, REG_RRD_RING_SIZE
,
977 (rrd_ring
[0].count
& RRD_RING_SIZE_MASK
));
980 AT_WRITE_REG(hw
, REG_CMB_BASE_ADDR_LO
, cmb
->dma
& AT_DMA_LO_ADDR_MASK
);
983 AT_WRITE_REG(hw
, REG_SMB_BASE_ADDR_HI
,
984 (u32
)((smb
->dma
& AT_DMA_HI_ADDR_MASK
) >> 32));
985 AT_WRITE_REG(hw
, REG_SMB_BASE_ADDR_LO
,
986 (u32
)(smb
->dma
& AT_DMA_LO_ADDR_MASK
));
987 /* Load all of base address above */
988 AT_WRITE_REG(hw
, REG_LOAD_PTR
, 1);
991 static void atl1c_configure_tx(struct atl1c_adapter
*adapter
)
993 struct atl1c_hw
*hw
= &adapter
->hw
;
996 u16 tx_offload_thresh
;
998 u32 extra_size
= 0; /* Jumbo frame threshold in QWORD unit */
1000 extra_size
= ETH_HLEN
+ VLAN_HLEN
+ ETH_FCS_LEN
;
1001 tx_offload_thresh
= MAX_TX_OFFLOAD_THRESH
;
1002 AT_WRITE_REG(hw
, REG_TX_TSO_OFFLOAD_THRESH
,
1003 (tx_offload_thresh
>> 3) & TX_TSO_OFFLOAD_THRESH_MASK
);
1004 AT_READ_REG(hw
, REG_DEVICE_CTRL
, &dev_ctrl_data
);
1005 max_pay_load
= (dev_ctrl_data
>> DEVICE_CTRL_MAX_PAYLOAD_SHIFT
) &
1006 DEVICE_CTRL_MAX_PAYLOAD_MASK
;
1007 hw
->dmaw_block
= min(max_pay_load
, hw
->dmaw_block
);
1008 max_pay_load
= (dev_ctrl_data
>> DEVICE_CTRL_MAX_RREQ_SZ_SHIFT
) &
1009 DEVICE_CTRL_MAX_RREQ_SZ_MASK
;
1010 hw
->dmar_block
= min(max_pay_load
, hw
->dmar_block
);
1012 txq_ctrl_data
= (hw
->tpd_burst
& TXQ_NUM_TPD_BURST_MASK
) <<
1013 TXQ_NUM_TPD_BURST_SHIFT
;
1014 if (hw
->ctrl_flags
& ATL1C_TXQ_MODE_ENHANCE
)
1015 txq_ctrl_data
|= TXQ_CTRL_ENH_MODE
;
1016 txq_ctrl_data
|= (atl1c_pay_load_size
[hw
->dmar_block
] &
1017 TXQ_TXF_BURST_NUM_MASK
) << TXQ_TXF_BURST_NUM_SHIFT
;
1019 AT_WRITE_REG(hw
, REG_TXQ_CTRL
, txq_ctrl_data
);
1022 static void atl1c_configure_rx(struct atl1c_adapter
*adapter
)
1024 struct atl1c_hw
*hw
= &adapter
->hw
;
1027 rxq_ctrl_data
= (hw
->rfd_burst
& RXQ_RFD_BURST_NUM_MASK
) <<
1028 RXQ_RFD_BURST_NUM_SHIFT
;
1030 if (hw
->ctrl_flags
& ATL1C_RX_IPV6_CHKSUM
)
1031 rxq_ctrl_data
|= IPV6_CHKSUM_CTRL_EN
;
1032 if (hw
->rss_type
== atl1c_rss_ipv4
)
1033 rxq_ctrl_data
|= RSS_HASH_IPV4
;
1034 if (hw
->rss_type
== atl1c_rss_ipv4_tcp
)
1035 rxq_ctrl_data
|= RSS_HASH_IPV4_TCP
;
1036 if (hw
->rss_type
== atl1c_rss_ipv6
)
1037 rxq_ctrl_data
|= RSS_HASH_IPV6
;
1038 if (hw
->rss_type
== atl1c_rss_ipv6_tcp
)
1039 rxq_ctrl_data
|= RSS_HASH_IPV6_TCP
;
1040 if (hw
->rss_type
!= atl1c_rss_disable
)
1041 rxq_ctrl_data
|= RRS_HASH_CTRL_EN
;
1043 rxq_ctrl_data
|= (hw
->rss_mode
& RSS_MODE_MASK
) <<
1045 rxq_ctrl_data
|= (hw
->rss_hash_bits
& RSS_HASH_BITS_MASK
) <<
1046 RSS_HASH_BITS_SHIFT
;
1047 if (hw
->ctrl_flags
& ATL1C_ASPM_CTRL_MON
)
1048 rxq_ctrl_data
|= (ASPM_THRUPUT_LIMIT_100M
&
1049 ASPM_THRUPUT_LIMIT_MASK
) << ASPM_THRUPUT_LIMIT_SHIFT
;
1051 AT_WRITE_REG(hw
, REG_RXQ_CTRL
, rxq_ctrl_data
);
1054 static void atl1c_configure_rss(struct atl1c_adapter
*adapter
)
1056 struct atl1c_hw
*hw
= &adapter
->hw
;
1058 AT_WRITE_REG(hw
, REG_IDT_TABLE
, hw
->indirect_tab
);
1059 AT_WRITE_REG(hw
, REG_BASE_CPU_NUMBER
, hw
->base_cpu
);
1062 static void atl1c_configure_dma(struct atl1c_adapter
*adapter
)
1064 struct atl1c_hw
*hw
= &adapter
->hw
;
1067 dma_ctrl_data
= DMA_CTRL_DMAR_REQ_PRI
;
1068 if (hw
->ctrl_flags
& ATL1C_CMB_ENABLE
)
1069 dma_ctrl_data
|= DMA_CTRL_CMB_EN
;
1070 if (hw
->ctrl_flags
& ATL1C_SMB_ENABLE
)
1071 dma_ctrl_data
|= DMA_CTRL_SMB_EN
;
1073 dma_ctrl_data
|= MAC_CTRL_SMB_DIS
;
1075 switch (hw
->dma_order
) {
1076 case atl1c_dma_ord_in
:
1077 dma_ctrl_data
|= DMA_CTRL_DMAR_IN_ORDER
;
1079 case atl1c_dma_ord_enh
:
1080 dma_ctrl_data
|= DMA_CTRL_DMAR_ENH_ORDER
;
1082 case atl1c_dma_ord_out
:
1083 dma_ctrl_data
|= DMA_CTRL_DMAR_OUT_ORDER
;
1089 dma_ctrl_data
|= (((u32
)hw
->dmar_block
) & DMA_CTRL_DMAR_BURST_LEN_MASK
)
1090 << DMA_CTRL_DMAR_BURST_LEN_SHIFT
;
1091 dma_ctrl_data
|= (((u32
)hw
->dmaw_block
) & DMA_CTRL_DMAW_BURST_LEN_MASK
)
1092 << DMA_CTRL_DMAW_BURST_LEN_SHIFT
;
1093 dma_ctrl_data
|= (((u32
)hw
->dmar_dly_cnt
) & DMA_CTRL_DMAR_DLY_CNT_MASK
)
1094 << DMA_CTRL_DMAR_DLY_CNT_SHIFT
;
1095 dma_ctrl_data
|= (((u32
)hw
->dmaw_dly_cnt
) & DMA_CTRL_DMAW_DLY_CNT_MASK
)
1096 << DMA_CTRL_DMAW_DLY_CNT_SHIFT
;
1098 AT_WRITE_REG(hw
, REG_DMA_CTRL
, dma_ctrl_data
);
1102 * Stop the mac, transmit and receive units
1103 * hw - Struct containing variables accessed by shared code
1104 * return : 0 or idle status (if error)
1106 static int atl1c_stop_mac(struct atl1c_hw
*hw
)
1111 AT_READ_REG(hw
, REG_RXQ_CTRL
, &data
);
1112 data
&= ~(RXQ1_CTRL_EN
| RXQ2_CTRL_EN
|
1113 RXQ3_CTRL_EN
| RXQ_CTRL_EN
);
1114 AT_WRITE_REG(hw
, REG_RXQ_CTRL
, data
);
1116 AT_READ_REG(hw
, REG_TXQ_CTRL
, &data
);
1117 data
&= ~TXQ_CTRL_EN
;
1118 AT_WRITE_REG(hw
, REG_TWSI_CTRL
, data
);
1120 for (timeout
= 0; timeout
< AT_HW_MAX_IDLE_DELAY
; timeout
++) {
1121 AT_READ_REG(hw
, REG_IDLE_STATUS
, &data
);
1122 if ((data
& (IDLE_STATUS_RXQ_NO_IDLE
|
1123 IDLE_STATUS_TXQ_NO_IDLE
)) == 0)
1128 AT_READ_REG(hw
, REG_MAC_CTRL
, &data
);
1129 data
&= ~(MAC_CTRL_TX_EN
| MAC_CTRL_RX_EN
);
1130 AT_WRITE_REG(hw
, REG_MAC_CTRL
, data
);
1132 for (timeout
= 0; timeout
< AT_HW_MAX_IDLE_DELAY
; timeout
++) {
1133 AT_READ_REG(hw
, REG_IDLE_STATUS
, &data
);
1134 if ((data
& IDLE_STATUS_MASK
) == 0)
1141 static void atl1c_enable_rx_ctrl(struct atl1c_hw
*hw
)
1145 AT_READ_REG(hw
, REG_RXQ_CTRL
, &data
);
1146 switch (hw
->adapter
->num_rx_queues
) {
1148 data
|= (RXQ3_CTRL_EN
| RXQ2_CTRL_EN
| RXQ1_CTRL_EN
);
1151 data
|= (RXQ2_CTRL_EN
| RXQ1_CTRL_EN
);
1154 data
|= RXQ1_CTRL_EN
;
1159 data
|= RXQ_CTRL_EN
;
1160 AT_WRITE_REG(hw
, REG_RXQ_CTRL
, data
);
1163 static void atl1c_enable_tx_ctrl(struct atl1c_hw
*hw
)
1167 AT_READ_REG(hw
, REG_TXQ_CTRL
, &data
);
1168 data
|= TXQ_CTRL_EN
;
1169 AT_WRITE_REG(hw
, REG_TXQ_CTRL
, data
);
1173 * Reset the transmit and receive units; mask and clear all interrupts.
1174 * hw - Struct containing variables accessed by shared code
1175 * return : 0 or idle status (if error)
1177 static int atl1c_reset_mac(struct atl1c_hw
*hw
)
1179 struct atl1c_adapter
*adapter
= (struct atl1c_adapter
*)hw
->adapter
;
1180 struct pci_dev
*pdev
= adapter
->pdev
;
1181 u32 idle_status_data
= 0;
1185 AT_WRITE_REG(hw
, REG_IMR
, 0);
1186 AT_WRITE_REG(hw
, REG_ISR
, ISR_DIS_INT
);
1188 ret
= atl1c_stop_mac(hw
);
1192 * Issue Soft Reset to the MAC. This will reset the chip's
1193 * transmit, receive, DMA. It will not effect
1194 * the current PCI configuration. The global reset bit is self-
1195 * clearing, and should clear within a microsecond.
1197 AT_WRITE_REGW(hw
, REG_MASTER_CTRL
, MASTER_CTRL_SOFT_RST
);
1200 /* Wait at least 10ms for All module to be Idle */
1201 for (timeout
= 0; timeout
< AT_HW_MAX_IDLE_DELAY
; timeout
++) {
1202 AT_READ_REG(hw
, REG_IDLE_STATUS
, &idle_status_data
);
1203 if ((idle_status_data
& IDLE_STATUS_MASK
) == 0)
1207 if (timeout
>= AT_HW_MAX_IDLE_DELAY
) {
1209 "MAC state machine cann't be idle since"
1210 " disabled for 10ms second\n");
1216 static void atl1c_disable_l0s_l1(struct atl1c_hw
*hw
)
1220 AT_READ_REG(hw
, REG_PM_CTRL
, &pm_ctrl_data
);
1221 pm_ctrl_data
&= ~(PM_CTRL_L1_ENTRY_TIMER_MASK
<<
1222 PM_CTRL_L1_ENTRY_TIMER_SHIFT
);
1223 pm_ctrl_data
&= ~PM_CTRL_CLK_SWH_L1
;
1224 pm_ctrl_data
&= ~PM_CTRL_ASPM_L0S_EN
;
1225 pm_ctrl_data
&= ~PM_CTRL_ASPM_L1_EN
;
1226 pm_ctrl_data
&= ~PM_CTRL_MAC_ASPM_CHK
;
1227 pm_ctrl_data
&= ~PM_CTRL_SERDES_PD_EX_L1
;
1229 pm_ctrl_data
|= PM_CTRL_SERDES_BUDS_RX_L1_EN
;
1230 pm_ctrl_data
|= PM_CTRL_SERDES_PLL_L1_EN
;
1231 pm_ctrl_data
|= PM_CTRL_SERDES_L1_EN
;
1232 AT_WRITE_REG(hw
, REG_PM_CTRL
, pm_ctrl_data
);
1237 * Enable/disable L0s/L1 depend on link state.
1239 static void atl1c_set_aspm(struct atl1c_hw
*hw
, bool linkup
)
1243 AT_READ_REG(hw
, REG_PM_CTRL
, &pm_ctrl_data
);
1245 pm_ctrl_data
&= PM_CTRL_SERDES_PD_EX_L1
;
1246 pm_ctrl_data
|= ~PM_CTRL_SERDES_BUDS_RX_L1_EN
;
1247 pm_ctrl_data
|= ~PM_CTRL_SERDES_L1_EN
;
1248 pm_ctrl_data
&= ~(PM_CTRL_L1_ENTRY_TIMER_MASK
<<
1249 PM_CTRL_L1_ENTRY_TIMER_SHIFT
);
1251 pm_ctrl_data
|= PM_CTRL_MAC_ASPM_CHK
;
1254 pm_ctrl_data
|= PM_CTRL_SERDES_PLL_L1_EN
;
1255 pm_ctrl_data
&= ~PM_CTRL_CLK_SWH_L1
;
1257 if (hw
->ctrl_flags
& ATL1C_ASPM_L1_SUPPORT
) {
1258 pm_ctrl_data
|= AT_ASPM_L1_TIMER
<<
1259 PM_CTRL_L1_ENTRY_TIMER_SHIFT
;
1260 pm_ctrl_data
|= PM_CTRL_ASPM_L1_EN
;
1262 pm_ctrl_data
&= ~PM_CTRL_ASPM_L1_EN
;
1264 if (hw
->ctrl_flags
& ATL1C_ASPM_L0S_SUPPORT
)
1265 pm_ctrl_data
|= PM_CTRL_ASPM_L0S_EN
;
1267 pm_ctrl_data
&= ~PM_CTRL_ASPM_L0S_EN
;
1270 pm_ctrl_data
&= ~PM_CTRL_ASPM_L0S_EN
;
1271 pm_ctrl_data
&= ~PM_CTRL_SERDES_PLL_L1_EN
;
1273 pm_ctrl_data
|= PM_CTRL_CLK_SWH_L1
;
1275 if (hw
->ctrl_flags
& ATL1C_ASPM_L1_SUPPORT
)
1276 pm_ctrl_data
|= PM_CTRL_ASPM_L1_EN
;
1278 pm_ctrl_data
&= ~PM_CTRL_ASPM_L1_EN
;
1281 AT_WRITE_REG(hw
, REG_PM_CTRL
, pm_ctrl_data
);
1284 static void atl1c_setup_mac_ctrl(struct atl1c_adapter
*adapter
)
1286 struct atl1c_hw
*hw
= &adapter
->hw
;
1287 struct net_device
*netdev
= adapter
->netdev
;
1290 mac_ctrl_data
= MAC_CTRL_TX_EN
| MAC_CTRL_RX_EN
;
1291 mac_ctrl_data
|= (MAC_CTRL_TX_FLOW
| MAC_CTRL_RX_FLOW
);
1293 if (adapter
->link_duplex
== FULL_DUPLEX
) {
1294 hw
->mac_duplex
= true;
1295 mac_ctrl_data
|= MAC_CTRL_DUPLX
;
1298 if (adapter
->link_speed
== SPEED_1000
)
1299 hw
->mac_speed
= atl1c_mac_speed_1000
;
1301 hw
->mac_speed
= atl1c_mac_speed_10_100
;
1303 mac_ctrl_data
|= (hw
->mac_speed
& MAC_CTRL_SPEED_MASK
) <<
1304 MAC_CTRL_SPEED_SHIFT
;
1306 mac_ctrl_data
|= (MAC_CTRL_ADD_CRC
| MAC_CTRL_PAD
);
1307 mac_ctrl_data
|= ((hw
->preamble_len
& MAC_CTRL_PRMLEN_MASK
) <<
1308 MAC_CTRL_PRMLEN_SHIFT
);
1311 mac_ctrl_data
|= MAC_CTRL_RMV_VLAN
;
1313 mac_ctrl_data
|= MAC_CTRL_BC_EN
;
1314 if (netdev
->flags
& IFF_PROMISC
)
1315 mac_ctrl_data
|= MAC_CTRL_PROMIS_EN
;
1316 if (netdev
->flags
& IFF_ALLMULTI
)
1317 mac_ctrl_data
|= MAC_CTRL_MC_ALL_EN
;
1319 mac_ctrl_data
|= MAC_CTRL_SINGLE_PAUSE_EN
;
1320 AT_WRITE_REG(hw
, REG_MAC_CTRL
, mac_ctrl_data
);
1324 * atl1c_configure - Configure Transmit&Receive Unit after Reset
1325 * @adapter: board private structure
1327 * Configure the Tx /Rx unit of the MAC after a reset.
1329 static int atl1c_configure(struct atl1c_adapter
*adapter
)
1331 struct atl1c_hw
*hw
= &adapter
->hw
;
1332 u32 master_ctrl_data
= 0;
1333 u32 intr_modrt_data
;
1335 /* clear interrupt status */
1336 AT_WRITE_REG(hw
, REG_ISR
, 0xFFFFFFFF);
1337 /* Clear any WOL status */
1338 AT_WRITE_REG(hw
, REG_WOL_CTRL
, 0);
1339 /* set Interrupt Clear Timer
1340 * HW will enable self to assert interrupt event to system after
1341 * waiting x-time for software to notify it accept interrupt.
1343 AT_WRITE_REG(hw
, REG_INT_RETRIG_TIMER
,
1344 hw
->ict
& INT_RETRIG_TIMER_MASK
);
1346 atl1c_configure_des_ring(adapter
);
1348 if (hw
->ctrl_flags
& ATL1C_INTR_MODRT_ENABLE
) {
1349 intr_modrt_data
= (hw
->tx_imt
& IRQ_MODRT_TIMER_MASK
) <<
1350 IRQ_MODRT_TX_TIMER_SHIFT
;
1351 intr_modrt_data
|= (hw
->rx_imt
& IRQ_MODRT_TIMER_MASK
) <<
1352 IRQ_MODRT_RX_TIMER_SHIFT
;
1353 AT_WRITE_REG(hw
, REG_IRQ_MODRT_TIMER_INIT
, intr_modrt_data
);
1355 MASTER_CTRL_TX_ITIMER_EN
| MASTER_CTRL_RX_ITIMER_EN
;
1358 if (hw
->ctrl_flags
& ATL1C_INTR_CLEAR_ON_READ
)
1359 master_ctrl_data
|= MASTER_CTRL_INT_RDCLR
;
1361 AT_WRITE_REG(hw
, REG_MASTER_CTRL
, master_ctrl_data
);
1363 if (hw
->ctrl_flags
& ATL1C_CMB_ENABLE
) {
1364 AT_WRITE_REG(hw
, REG_CMB_TPD_THRESH
,
1365 hw
->cmb_tpd
& CMB_TPD_THRESH_MASK
);
1366 AT_WRITE_REG(hw
, REG_CMB_TX_TIMER
,
1367 hw
->cmb_tx_timer
& CMB_TX_TIMER_MASK
);
1370 if (hw
->ctrl_flags
& ATL1C_SMB_ENABLE
)
1371 AT_WRITE_REG(hw
, REG_SMB_STAT_TIMER
,
1372 hw
->smb_timer
& SMB_STAT_TIMER_MASK
);
1374 AT_WRITE_REG(hw
, REG_MTU
, hw
->max_frame_size
+ ETH_HLEN
+
1375 VLAN_HLEN
+ ETH_FCS_LEN
);
1377 AT_WRITE_REG(hw
, REG_HDS_CTRL
, 0);
1379 atl1c_configure_tx(adapter
);
1380 atl1c_configure_rx(adapter
);
1381 atl1c_configure_rss(adapter
);
1382 atl1c_configure_dma(adapter
);
1387 static void atl1c_update_hw_stats(struct atl1c_adapter
*adapter
)
1389 u16 hw_reg_addr
= 0;
1390 unsigned long *stats_item
= NULL
;
1393 /* update rx status */
1394 hw_reg_addr
= REG_MAC_RX_STATUS_BIN
;
1395 stats_item
= &adapter
->hw_stats
.rx_ok
;
1396 while (hw_reg_addr
<= REG_MAC_RX_STATUS_END
) {
1397 AT_READ_REG(&adapter
->hw
, hw_reg_addr
, &data
);
1398 *stats_item
+= data
;
1402 /* update tx status */
1403 hw_reg_addr
= REG_MAC_TX_STATUS_BIN
;
1404 stats_item
= &adapter
->hw_stats
.tx_ok
;
1405 while (hw_reg_addr
<= REG_MAC_TX_STATUS_END
) {
1406 AT_READ_REG(&adapter
->hw
, hw_reg_addr
, &data
);
1407 *stats_item
+= data
;
1414 * atl1c_get_stats - Get System Network Statistics
1415 * @netdev: network interface device structure
1417 * Returns the address of the device statistics structure.
1418 * The statistics are actually updated from the timer callback.
1420 static struct net_device_stats
*atl1c_get_stats(struct net_device
*netdev
)
1422 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
1423 struct atl1c_hw_stats
*hw_stats
= &adapter
->hw_stats
;
1424 struct net_device_stats
*net_stats
= &adapter
->net_stats
;
1426 atl1c_update_hw_stats(adapter
);
1427 net_stats
->rx_packets
= hw_stats
->rx_ok
;
1428 net_stats
->tx_packets
= hw_stats
->tx_ok
;
1429 net_stats
->rx_bytes
= hw_stats
->rx_byte_cnt
;
1430 net_stats
->tx_bytes
= hw_stats
->tx_byte_cnt
;
1431 net_stats
->multicast
= hw_stats
->rx_mcast
;
1432 net_stats
->collisions
= hw_stats
->tx_1_col
+
1433 hw_stats
->tx_2_col
* 2 +
1434 hw_stats
->tx_late_col
+ hw_stats
->tx_abort_col
;
1435 net_stats
->rx_errors
= hw_stats
->rx_frag
+ hw_stats
->rx_fcs_err
+
1436 hw_stats
->rx_len_err
+ hw_stats
->rx_sz_ov
+
1437 hw_stats
->rx_rrd_ov
+ hw_stats
->rx_align_err
;
1438 net_stats
->rx_fifo_errors
= hw_stats
->rx_rxf_ov
;
1439 net_stats
->rx_length_errors
= hw_stats
->rx_len_err
;
1440 net_stats
->rx_crc_errors
= hw_stats
->rx_fcs_err
;
1441 net_stats
->rx_frame_errors
= hw_stats
->rx_align_err
;
1442 net_stats
->rx_over_errors
= hw_stats
->rx_rrd_ov
+ hw_stats
->rx_rxf_ov
;
1444 net_stats
->rx_missed_errors
= hw_stats
->rx_rrd_ov
+ hw_stats
->rx_rxf_ov
;
1446 net_stats
->tx_errors
= hw_stats
->tx_late_col
+ hw_stats
->tx_abort_col
+
1447 hw_stats
->tx_underrun
+ hw_stats
->tx_trunc
;
1448 net_stats
->tx_fifo_errors
= hw_stats
->tx_underrun
;
1449 net_stats
->tx_aborted_errors
= hw_stats
->tx_abort_col
;
1450 net_stats
->tx_window_errors
= hw_stats
->tx_late_col
;
1452 return &adapter
->net_stats
;
1455 static inline void atl1c_clear_phy_int(struct atl1c_adapter
*adapter
)
1459 spin_lock(&adapter
->mdio_lock
);
1460 atl1c_read_phy_reg(&adapter
->hw
, MII_ISR
, &phy_data
);
1461 spin_unlock(&adapter
->mdio_lock
);
1464 static bool atl1c_clean_tx_irq(struct atl1c_adapter
*adapter
,
1465 enum atl1c_trans_queue type
)
1467 struct atl1c_tpd_ring
*tpd_ring
= (struct atl1c_tpd_ring
*)
1468 &adapter
->tpd_ring
[type
];
1469 struct atl1c_buffer
*buffer_info
;
1470 u16 next_to_clean
= atomic_read(&tpd_ring
->next_to_clean
);
1471 u16 hw_next_to_clean
;
1475 if (type
== atl1c_trans_high
)
1476 shift
= MB_HTPD_CONS_IDX_SHIFT
;
1478 shift
= MB_NTPD_CONS_IDX_SHIFT
;
1480 AT_READ_REG(&adapter
->hw
, REG_MB_PRIO_CONS_IDX
, &data
);
1481 hw_next_to_clean
= (data
>> shift
) & MB_PRIO_PROD_IDX_MASK
;
1483 while (next_to_clean
!= hw_next_to_clean
) {
1484 buffer_info
= &tpd_ring
->buffer_info
[next_to_clean
];
1485 if (buffer_info
->state
== ATL1_BUFFER_BUSY
) {
1486 pci_unmap_page(adapter
->pdev
, buffer_info
->dma
,
1487 buffer_info
->length
, PCI_DMA_TODEVICE
);
1488 buffer_info
->dma
= 0;
1489 if (buffer_info
->skb
) {
1490 dev_kfree_skb_irq(buffer_info
->skb
);
1491 buffer_info
->skb
= NULL
;
1493 buffer_info
->state
= ATL1_BUFFER_FREE
;
1495 if (++next_to_clean
== tpd_ring
->count
)
1497 atomic_set(&tpd_ring
->next_to_clean
, next_to_clean
);
1500 if (netif_queue_stopped(adapter
->netdev
) &&
1501 netif_carrier_ok(adapter
->netdev
)) {
1502 netif_wake_queue(adapter
->netdev
);
1509 * atl1c_intr - Interrupt Handler
1510 * @irq: interrupt number
1511 * @data: pointer to a network interface device structure
1512 * @pt_regs: CPU registers structure
1514 static irqreturn_t
atl1c_intr(int irq
, void *data
)
1516 struct net_device
*netdev
= data
;
1517 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
1518 struct pci_dev
*pdev
= adapter
->pdev
;
1519 struct atl1c_hw
*hw
= &adapter
->hw
;
1520 int max_ints
= AT_MAX_INT_WORK
;
1521 int handled
= IRQ_NONE
;
1526 AT_READ_REG(hw
, REG_ISR
, ®_data
);
1527 status
= reg_data
& hw
->intr_mask
;
1529 if (status
== 0 || (status
& ISR_DIS_INT
) != 0) {
1530 if (max_ints
!= AT_MAX_INT_WORK
)
1531 handled
= IRQ_HANDLED
;
1535 if (status
& ISR_GPHY
)
1536 atl1c_clear_phy_int(adapter
);
1538 AT_WRITE_REG(hw
, REG_ISR
, status
| ISR_DIS_INT
);
1539 if (status
& ISR_RX_PKT
) {
1540 if (likely(napi_schedule_prep(&adapter
->napi
))) {
1541 hw
->intr_mask
&= ~ISR_RX_PKT
;
1542 AT_WRITE_REG(hw
, REG_IMR
, hw
->intr_mask
);
1543 __napi_schedule(&adapter
->napi
);
1546 if (status
& ISR_TX_PKT
)
1547 atl1c_clean_tx_irq(adapter
, atl1c_trans_normal
);
1549 handled
= IRQ_HANDLED
;
1550 /* check if PCIE PHY Link down */
1551 if (status
& ISR_ERROR
) {
1552 if (netif_msg_hw(adapter
))
1554 "atl1c hardware error (status = 0x%x)\n",
1555 status
& ISR_ERROR
);
1557 hw
->intr_mask
&= ~ISR_ERROR
;
1558 AT_WRITE_REG(hw
, REG_IMR
, hw
->intr_mask
);
1559 schedule_work(&adapter
->reset_task
);
1563 if (status
& ISR_OVER
)
1564 if (netif_msg_intr(adapter
))
1565 dev_warn(&pdev
->dev
,
1566 "TX/RX over flow (status = 0x%x)\n",
1570 if (status
& (ISR_GPHY
| ISR_MANUAL
)) {
1571 adapter
->net_stats
.tx_carrier_errors
++;
1572 atl1c_link_chg_event(adapter
);
1576 } while (--max_ints
> 0);
1577 /* re-enable Interrupt*/
1578 AT_WRITE_REG(&adapter
->hw
, REG_ISR
, 0);
1582 static inline void atl1c_rx_checksum(struct atl1c_adapter
*adapter
,
1583 struct sk_buff
*skb
, struct atl1c_recv_ret_status
*prrs
)
1586 * The pid field in RRS in not correct sometimes, so we
1587 * cannot figure out if the packet is fragmented or not,
1588 * so we tell the KERNEL CHECKSUM_NONE
1590 skb
->ip_summed
= CHECKSUM_NONE
;
1593 static int atl1c_alloc_rx_buffer(struct atl1c_adapter
*adapter
, const int ringid
)
1595 struct atl1c_rfd_ring
*rfd_ring
= &adapter
->rfd_ring
[ringid
];
1596 struct pci_dev
*pdev
= adapter
->pdev
;
1597 struct atl1c_buffer
*buffer_info
, *next_info
;
1598 struct sk_buff
*skb
;
1599 void *vir_addr
= NULL
;
1601 u16 rfd_next_to_use
, next_next
;
1602 struct atl1c_rx_free_desc
*rfd_desc
;
1604 next_next
= rfd_next_to_use
= rfd_ring
->next_to_use
;
1605 if (++next_next
== rfd_ring
->count
)
1607 buffer_info
= &rfd_ring
->buffer_info
[rfd_next_to_use
];
1608 next_info
= &rfd_ring
->buffer_info
[next_next
];
1610 while (next_info
->state
== ATL1_BUFFER_FREE
) {
1611 rfd_desc
= ATL1C_RFD_DESC(rfd_ring
, rfd_next_to_use
);
1613 skb
= dev_alloc_skb(adapter
->rx_buffer_len
);
1614 if (unlikely(!skb
)) {
1615 if (netif_msg_rx_err(adapter
))
1616 dev_warn(&pdev
->dev
, "alloc rx buffer failed\n");
1621 * Make buffer alignment 2 beyond a 16 byte boundary
1622 * this will result in a 16 byte aligned IP header after
1623 * the 14 byte MAC header is removed
1625 vir_addr
= skb
->data
;
1626 buffer_info
->state
= ATL1_BUFFER_BUSY
;
1627 buffer_info
->skb
= skb
;
1628 buffer_info
->length
= adapter
->rx_buffer_len
;
1629 buffer_info
->dma
= pci_map_single(pdev
, vir_addr
,
1630 buffer_info
->length
,
1631 PCI_DMA_FROMDEVICE
);
1632 rfd_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
1633 rfd_next_to_use
= next_next
;
1634 if (++next_next
== rfd_ring
->count
)
1636 buffer_info
= &rfd_ring
->buffer_info
[rfd_next_to_use
];
1637 next_info
= &rfd_ring
->buffer_info
[next_next
];
1642 /* TODO: update mailbox here */
1644 rfd_ring
->next_to_use
= rfd_next_to_use
;
1645 AT_WRITE_REG(&adapter
->hw
, atl1c_rfd_prod_idx_regs
[ringid
],
1646 rfd_ring
->next_to_use
& MB_RFDX_PROD_IDX_MASK
);
1652 static void atl1c_clean_rrd(struct atl1c_rrd_ring
*rrd_ring
,
1653 struct atl1c_recv_ret_status
*rrs
, u16 num
)
1656 /* the relationship between rrd and rfd is one map one */
1657 for (i
= 0; i
< num
; i
++, rrs
= ATL1C_RRD_DESC(rrd_ring
,
1658 rrd_ring
->next_to_clean
)) {
1659 rrs
->word3
&= ~RRS_RXD_UPDATED
;
1660 if (++rrd_ring
->next_to_clean
== rrd_ring
->count
)
1661 rrd_ring
->next_to_clean
= 0;
1665 static void atl1c_clean_rfd(struct atl1c_rfd_ring
*rfd_ring
,
1666 struct atl1c_recv_ret_status
*rrs
, u16 num
)
1670 struct atl1c_buffer
*buffer_info
= rfd_ring
->buffer_info
;
1672 rfd_index
= (rrs
->word0
>> RRS_RX_RFD_INDEX_SHIFT
) &
1673 RRS_RX_RFD_INDEX_MASK
;
1674 for (i
= 0; i
< num
; i
++) {
1675 buffer_info
[rfd_index
].skb
= NULL
;
1676 buffer_info
[rfd_index
].state
= ATL1_BUFFER_FREE
;
1677 if (++rfd_index
== rfd_ring
->count
)
1680 rfd_ring
->next_to_clean
= rfd_index
;
1683 static void atl1c_clean_rx_irq(struct atl1c_adapter
*adapter
, u8 que
,
1684 int *work_done
, int work_to_do
)
1686 u16 rfd_num
, rfd_index
;
1689 struct pci_dev
*pdev
= adapter
->pdev
;
1690 struct net_device
*netdev
= adapter
->netdev
;
1691 struct atl1c_rfd_ring
*rfd_ring
= &adapter
->rfd_ring
[que
];
1692 struct atl1c_rrd_ring
*rrd_ring
= &adapter
->rrd_ring
[que
];
1693 struct sk_buff
*skb
;
1694 struct atl1c_recv_ret_status
*rrs
;
1695 struct atl1c_buffer
*buffer_info
;
1698 if (*work_done
>= work_to_do
)
1700 rrs
= ATL1C_RRD_DESC(rrd_ring
, rrd_ring
->next_to_clean
);
1701 if (likely(RRS_RXD_IS_VALID(rrs
->word3
))) {
1702 rfd_num
= (rrs
->word0
>> RRS_RX_RFD_CNT_SHIFT
) &
1703 RRS_RX_RFD_CNT_MASK
;
1704 if (unlikely(rfd_num
) != 1)
1705 /* TODO support mul rfd*/
1706 if (netif_msg_rx_err(adapter
))
1707 dev_warn(&pdev
->dev
,
1708 "Multi rfd not support yet!\n");
1714 atl1c_clean_rrd(rrd_ring
, rrs
, rfd_num
);
1715 if (rrs
->word3
& (RRS_RX_ERR_SUM
| RRS_802_3_LEN_ERR
)) {
1716 atl1c_clean_rfd(rfd_ring
, rrs
, rfd_num
);
1717 if (netif_msg_rx_err(adapter
))
1718 dev_warn(&pdev
->dev
,
1719 "wrong packet! rrs word3 is %x\n",
1724 length
= le16_to_cpu((rrs
->word3
>> RRS_PKT_SIZE_SHIFT
) &
1727 if (likely(rfd_num
== 1)) {
1728 rfd_index
= (rrs
->word0
>> RRS_RX_RFD_INDEX_SHIFT
) &
1729 RRS_RX_RFD_INDEX_MASK
;
1730 buffer_info
= &rfd_ring
->buffer_info
[rfd_index
];
1731 pci_unmap_single(pdev
, buffer_info
->dma
,
1732 buffer_info
->length
, PCI_DMA_FROMDEVICE
);
1733 skb
= buffer_info
->skb
;
1736 if (netif_msg_rx_err(adapter
))
1737 dev_warn(&pdev
->dev
,
1738 "Multi rfd not support yet!\n");
1741 atl1c_clean_rfd(rfd_ring
, rrs
, rfd_num
);
1742 skb_put(skb
, length
- ETH_FCS_LEN
);
1743 skb
->protocol
= eth_type_trans(skb
, netdev
);
1745 atl1c_rx_checksum(adapter
, skb
, rrs
);
1746 if (unlikely(adapter
->vlgrp
) && rrs
->word3
& RRS_VLAN_INS
) {
1749 AT_TAG_TO_VLAN(rrs
->vlan_tag
, vlan
);
1750 vlan
= le16_to_cpu(vlan
);
1751 vlan_hwaccel_receive_skb(skb
, adapter
->vlgrp
, vlan
);
1753 netif_receive_skb(skb
);
1755 netdev
->last_rx
= jiffies
;
1760 atl1c_alloc_rx_buffer(adapter
, que
);
1764 * atl1c_clean - NAPI Rx polling callback
1765 * @adapter: board private structure
1767 static int atl1c_clean(struct napi_struct
*napi
, int budget
)
1769 struct atl1c_adapter
*adapter
=
1770 container_of(napi
, struct atl1c_adapter
, napi
);
1773 /* Keep link state information with original netdev */
1774 if (!netif_carrier_ok(adapter
->netdev
))
1776 /* just enable one RXQ */
1777 atl1c_clean_rx_irq(adapter
, 0, &work_done
, budget
);
1779 if (work_done
< budget
) {
1781 napi_complete(napi
);
1782 adapter
->hw
.intr_mask
|= ISR_RX_PKT
;
1783 AT_WRITE_REG(&adapter
->hw
, REG_IMR
, adapter
->hw
.intr_mask
);
1788 #ifdef CONFIG_NET_POLL_CONTROLLER
1791 * Polling 'interrupt' - used by things like netconsole to send skbs
1792 * without having to re-enable interrupts. It's not called while
1793 * the interrupt routine is executing.
1795 static void atl1c_netpoll(struct net_device
*netdev
)
1797 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
1799 disable_irq(adapter
->pdev
->irq
);
1800 atl1c_intr(adapter
->pdev
->irq
, netdev
);
1801 enable_irq(adapter
->pdev
->irq
);
1805 static inline u16
atl1c_tpd_avail(struct atl1c_adapter
*adapter
, enum atl1c_trans_queue type
)
1807 struct atl1c_tpd_ring
*tpd_ring
= &adapter
->tpd_ring
[type
];
1808 u16 next_to_use
= 0;
1809 u16 next_to_clean
= 0;
1811 next_to_clean
= atomic_read(&tpd_ring
->next_to_clean
);
1812 next_to_use
= tpd_ring
->next_to_use
;
1814 return (u16
)(next_to_clean
> next_to_use
) ?
1815 (next_to_clean
- next_to_use
- 1) :
1816 (tpd_ring
->count
+ next_to_clean
- next_to_use
- 1);
1820 * get next usable tpd
1821 * Note: should call atl1c_tdp_avail to make sure
1822 * there is enough tpd to use
1824 static struct atl1c_tpd_desc
*atl1c_get_tpd(struct atl1c_adapter
*adapter
,
1825 enum atl1c_trans_queue type
)
1827 struct atl1c_tpd_ring
*tpd_ring
= &adapter
->tpd_ring
[type
];
1828 struct atl1c_tpd_desc
*tpd_desc
;
1829 u16 next_to_use
= 0;
1831 next_to_use
= tpd_ring
->next_to_use
;
1832 if (++tpd_ring
->next_to_use
== tpd_ring
->count
)
1833 tpd_ring
->next_to_use
= 0;
1834 tpd_desc
= ATL1C_TPD_DESC(tpd_ring
, next_to_use
);
1835 memset(tpd_desc
, 0, sizeof(struct atl1c_tpd_desc
));
1839 static struct atl1c_buffer
*
1840 atl1c_get_tx_buffer(struct atl1c_adapter
*adapter
, struct atl1c_tpd_desc
*tpd
)
1842 struct atl1c_tpd_ring
*tpd_ring
= adapter
->tpd_ring
;
1844 return &tpd_ring
->buffer_info
[tpd
-
1845 (struct atl1c_tpd_desc
*)tpd_ring
->desc
];
1848 /* Calculate the transmit packet descript needed*/
1849 static u16
atl1c_cal_tpd_req(const struct sk_buff
*skb
)
1852 u16 proto_hdr_len
= 0;
1854 tpd_req
= skb_shinfo(skb
)->nr_frags
+ 1;
1856 if (skb_is_gso(skb
)) {
1857 proto_hdr_len
= skb_transport_offset(skb
) + tcp_hdrlen(skb
);
1858 if (proto_hdr_len
< skb_headlen(skb
))
1860 if (skb_shinfo(skb
)->gso_type
& SKB_GSO_TCPV6
)
1866 static int atl1c_tso_csum(struct atl1c_adapter
*adapter
,
1867 struct sk_buff
*skb
,
1868 struct atl1c_tpd_desc
**tpd
,
1869 enum atl1c_trans_queue type
)
1871 struct pci_dev
*pdev
= adapter
->pdev
;
1874 unsigned short offload_type
;
1877 if (skb_is_gso(skb
)) {
1878 if (skb_header_cloned(skb
)) {
1879 err
= pskb_expand_head(skb
, 0, 0, GFP_ATOMIC
);
1883 offload_type
= skb_shinfo(skb
)->gso_type
;
1885 if (offload_type
& SKB_GSO_TCPV4
) {
1886 real_len
= (((unsigned char *)ip_hdr(skb
) - skb
->data
)
1887 + ntohs(ip_hdr(skb
)->tot_len
));
1889 if (real_len
< skb
->len
)
1890 pskb_trim(skb
, real_len
);
1892 hdr_len
= (skb_transport_offset(skb
) + tcp_hdrlen(skb
));
1893 if (unlikely(skb
->len
== hdr_len
)) {
1894 /* only xsum need */
1895 if (netif_msg_tx_queued(adapter
))
1896 dev_warn(&pdev
->dev
,
1897 "IPV4 tso with zero data??\n");
1900 ip_hdr(skb
)->check
= 0;
1901 tcp_hdr(skb
)->check
= ~csum_tcpudp_magic(
1905 (*tpd
)->word1
|= 1 << TPD_IPV4_PACKET_SHIFT
;
1909 if (offload_type
& SKB_GSO_TCPV6
) {
1910 struct atl1c_tpd_ext_desc
*etpd
=
1911 *(struct atl1c_tpd_ext_desc
**)(tpd
);
1913 memset(etpd
, 0, sizeof(struct atl1c_tpd_ext_desc
));
1914 *tpd
= atl1c_get_tpd(adapter
, type
);
1915 ipv6_hdr(skb
)->payload_len
= 0;
1916 /* check payload == 0 byte ? */
1917 hdr_len
= (skb_transport_offset(skb
) + tcp_hdrlen(skb
));
1918 if (unlikely(skb
->len
== hdr_len
)) {
1919 /* only xsum need */
1920 if (netif_msg_tx_queued(adapter
))
1921 dev_warn(&pdev
->dev
,
1922 "IPV6 tso with zero data??\n");
1925 tcp_hdr(skb
)->check
= ~csum_ipv6_magic(
1926 &ipv6_hdr(skb
)->saddr
,
1927 &ipv6_hdr(skb
)->daddr
,
1929 etpd
->word1
|= 1 << TPD_LSO_EN_SHIFT
;
1930 etpd
->word1
|= 1 << TPD_LSO_VER_SHIFT
;
1931 etpd
->pkt_len
= cpu_to_le32(skb
->len
);
1932 (*tpd
)->word1
|= 1 << TPD_LSO_VER_SHIFT
;
1935 (*tpd
)->word1
|= 1 << TPD_LSO_EN_SHIFT
;
1936 (*tpd
)->word1
|= (skb_transport_offset(skb
) & TPD_TCPHDR_OFFSET_MASK
) <<
1937 TPD_TCPHDR_OFFSET_SHIFT
;
1938 (*tpd
)->word1
|= (skb_shinfo(skb
)->gso_size
& TPD_MSS_MASK
) <<
1944 if (likely(skb
->ip_summed
== CHECKSUM_PARTIAL
)) {
1946 cso
= skb_transport_offset(skb
);
1948 if (unlikely(cso
& 0x1)) {
1949 if (netif_msg_tx_err(adapter
))
1950 dev_err(&adapter
->pdev
->dev
,
1951 "payload offset should not an event number\n");
1954 css
= cso
+ skb
->csum_offset
;
1956 (*tpd
)->word1
|= ((cso
>> 1) & TPD_PLOADOFFSET_MASK
) <<
1957 TPD_PLOADOFFSET_SHIFT
;
1958 (*tpd
)->word1
|= ((css
>> 1) & TPD_CCSUM_OFFSET_MASK
) <<
1959 TPD_CCSUM_OFFSET_SHIFT
;
1960 (*tpd
)->word1
|= 1 << TPD_CCSUM_EN_SHIFT
;
1966 static void atl1c_tx_map(struct atl1c_adapter
*adapter
,
1967 struct sk_buff
*skb
, struct atl1c_tpd_desc
*tpd
,
1968 enum atl1c_trans_queue type
)
1970 struct atl1c_tpd_desc
*use_tpd
= NULL
;
1971 struct atl1c_buffer
*buffer_info
= NULL
;
1972 u16 buf_len
= skb_headlen(skb
);
1980 nr_frags
= skb_shinfo(skb
)->nr_frags
;
1981 tso
= (tpd
->word1
>> TPD_LSO_EN_SHIFT
) & TPD_LSO_EN_MASK
;
1984 map_len
= hdr_len
= skb_transport_offset(skb
) + tcp_hdrlen(skb
);
1987 buffer_info
= atl1c_get_tx_buffer(adapter
, use_tpd
);
1988 buffer_info
->length
= map_len
;
1989 buffer_info
->dma
= pci_map_single(adapter
->pdev
,
1990 skb
->data
, hdr_len
, PCI_DMA_TODEVICE
);
1991 buffer_info
->state
= ATL1_BUFFER_BUSY
;
1992 mapped_len
+= map_len
;
1993 use_tpd
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
1994 use_tpd
->buffer_len
= cpu_to_le16(buffer_info
->length
);
1997 if (mapped_len
< buf_len
) {
1998 /* mapped_len == 0, means we should use the first tpd,
1999 which is given by caller */
2000 if (mapped_len
== 0)
2003 use_tpd
= atl1c_get_tpd(adapter
, type
);
2004 memcpy(use_tpd
, tpd
, sizeof(struct atl1c_tpd_desc
));
2005 use_tpd
= atl1c_get_tpd(adapter
, type
);
2006 memcpy(use_tpd
, tpd
, sizeof(struct atl1c_tpd_desc
));
2008 buffer_info
= atl1c_get_tx_buffer(adapter
, use_tpd
);
2009 buffer_info
->length
= buf_len
- mapped_len
;
2011 pci_map_single(adapter
->pdev
, skb
->data
+ mapped_len
,
2012 buffer_info
->length
, PCI_DMA_TODEVICE
);
2013 buffer_info
->state
= ATL1_BUFFER_BUSY
;
2015 use_tpd
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
2016 use_tpd
->buffer_len
= cpu_to_le16(buffer_info
->length
);
2019 for (f
= 0; f
< nr_frags
; f
++) {
2020 struct skb_frag_struct
*frag
;
2022 frag
= &skb_shinfo(skb
)->frags
[f
];
2024 use_tpd
= atl1c_get_tpd(adapter
, type
);
2025 memcpy(use_tpd
, tpd
, sizeof(struct atl1c_tpd_desc
));
2027 buffer_info
= atl1c_get_tx_buffer(adapter
, use_tpd
);
2028 buffer_info
->length
= frag
->size
;
2030 pci_map_page(adapter
->pdev
, frag
->page
,
2032 buffer_info
->length
,
2034 buffer_info
->state
= ATL1_BUFFER_BUSY
;
2036 use_tpd
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
2037 use_tpd
->buffer_len
= cpu_to_le16(buffer_info
->length
);
2041 use_tpd
->word1
|= 1 << TPD_EOP_SHIFT
;
2042 /* The last buffer info contain the skb address,
2043 so it will be free after unmap */
2044 buffer_info
->skb
= skb
;
2047 static void atl1c_tx_queue(struct atl1c_adapter
*adapter
, struct sk_buff
*skb
,
2048 struct atl1c_tpd_desc
*tpd
, enum atl1c_trans_queue type
)
2050 struct atl1c_tpd_ring
*tpd_ring
= &adapter
->tpd_ring
[type
];
2053 AT_READ_REG(&adapter
->hw
, REG_MB_PRIO_PROD_IDX
, &prod_data
);
2055 case atl1c_trans_high
:
2056 prod_data
&= 0xFFFF0000;
2057 prod_data
|= tpd_ring
->next_to_use
& 0xFFFF;
2059 case atl1c_trans_normal
:
2060 prod_data
&= 0x0000FFFF;
2061 prod_data
|= (tpd_ring
->next_to_use
& 0xFFFF) << 16;
2067 AT_WRITE_REG(&adapter
->hw
, REG_MB_PRIO_PROD_IDX
, prod_data
);
2070 static int atl1c_xmit_frame(struct sk_buff
*skb
, struct net_device
*netdev
)
2072 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
2073 unsigned long flags
;
2075 struct atl1c_tpd_desc
*tpd
;
2076 enum atl1c_trans_queue type
= atl1c_trans_normal
;
2078 if (test_bit(__AT_DOWN
, &adapter
->flags
)) {
2079 dev_kfree_skb_any(skb
);
2080 return NETDEV_TX_OK
;
2083 tpd_req
= atl1c_cal_tpd_req(skb
);
2084 if (!spin_trylock_irqsave(&adapter
->tx_lock
, flags
)) {
2085 if (netif_msg_pktdata(adapter
))
2086 dev_info(&adapter
->pdev
->dev
, "tx locked\n");
2087 return NETDEV_TX_LOCKED
;
2089 if (skb
->mark
== 0x01)
2090 type
= atl1c_trans_high
;
2092 type
= atl1c_trans_normal
;
2094 if (atl1c_tpd_avail(adapter
, type
) < tpd_req
) {
2095 /* no enough descriptor, just stop queue */
2096 netif_stop_queue(netdev
);
2097 spin_unlock_irqrestore(&adapter
->tx_lock
, flags
);
2098 return NETDEV_TX_BUSY
;
2101 tpd
= atl1c_get_tpd(adapter
, type
);
2103 /* do TSO and check sum */
2104 if (atl1c_tso_csum(adapter
, skb
, &tpd
, type
) != 0) {
2105 spin_unlock_irqrestore(&adapter
->tx_lock
, flags
);
2106 dev_kfree_skb_any(skb
);
2107 return NETDEV_TX_OK
;
2110 if (unlikely(adapter
->vlgrp
&& vlan_tx_tag_present(skb
))) {
2111 u16 vlan
= vlan_tx_tag_get(skb
);
2114 vlan
= cpu_to_le16(vlan
);
2115 AT_VLAN_TO_TAG(vlan
, tag
);
2116 tpd
->word1
|= 1 << TPD_INS_VTAG_SHIFT
;
2117 tpd
->vlan_tag
= tag
;
2120 if (skb_network_offset(skb
) != ETH_HLEN
)
2121 tpd
->word1
|= 1 << TPD_ETH_TYPE_SHIFT
; /* Ethernet frame */
2123 atl1c_tx_map(adapter
, skb
, tpd
, type
);
2124 atl1c_tx_queue(adapter
, skb
, tpd
, type
);
2126 netdev
->trans_start
= jiffies
;
2127 spin_unlock_irqrestore(&adapter
->tx_lock
, flags
);
2128 return NETDEV_TX_OK
;
2131 static void atl1c_free_irq(struct atl1c_adapter
*adapter
)
2133 struct net_device
*netdev
= adapter
->netdev
;
2135 free_irq(adapter
->pdev
->irq
, netdev
);
2137 if (adapter
->have_msi
)
2138 pci_disable_msi(adapter
->pdev
);
2141 static int atl1c_request_irq(struct atl1c_adapter
*adapter
)
2143 struct pci_dev
*pdev
= adapter
->pdev
;
2144 struct net_device
*netdev
= adapter
->netdev
;
2148 adapter
->have_msi
= true;
2149 err
= pci_enable_msi(adapter
->pdev
);
2151 if (netif_msg_ifup(adapter
))
2153 "Unable to allocate MSI interrupt Error: %d\n",
2155 adapter
->have_msi
= false;
2157 netdev
->irq
= pdev
->irq
;
2159 if (!adapter
->have_msi
)
2160 flags
|= IRQF_SHARED
;
2161 err
= request_irq(adapter
->pdev
->irq
, &atl1c_intr
, flags
,
2162 netdev
->name
, netdev
);
2164 if (netif_msg_ifup(adapter
))
2166 "Unable to allocate interrupt Error: %d\n",
2168 if (adapter
->have_msi
)
2169 pci_disable_msi(adapter
->pdev
);
2172 if (netif_msg_ifup(adapter
))
2173 dev_dbg(&pdev
->dev
, "atl1c_request_irq OK\n");
2177 int atl1c_up(struct atl1c_adapter
*adapter
)
2179 struct net_device
*netdev
= adapter
->netdev
;
2184 netif_carrier_off(netdev
);
2185 atl1c_init_ring_ptrs(adapter
);
2186 atl1c_set_multi(netdev
);
2187 atl1c_restore_vlan(adapter
);
2189 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
2190 num
= atl1c_alloc_rx_buffer(adapter
, i
);
2191 if (unlikely(num
== 0)) {
2197 if (atl1c_configure(adapter
)) {
2202 err
= atl1c_request_irq(adapter
);
2206 clear_bit(__AT_DOWN
, &adapter
->flags
);
2207 napi_enable(&adapter
->napi
);
2208 atl1c_irq_enable(adapter
);
2209 atl1c_check_link_status(adapter
);
2210 netif_start_queue(netdev
);
2215 atl1c_clean_rx_ring(adapter
);
2219 void atl1c_down(struct atl1c_adapter
*adapter
)
2221 struct net_device
*netdev
= adapter
->netdev
;
2223 atl1c_del_timer(adapter
);
2224 atl1c_cancel_work(adapter
);
2226 /* signal that we're down so the interrupt handler does not
2227 * reschedule our watchdog timer */
2228 set_bit(__AT_DOWN
, &adapter
->flags
);
2229 netif_carrier_off(netdev
);
2230 napi_disable(&adapter
->napi
);
2231 atl1c_irq_disable(adapter
);
2232 atl1c_free_irq(adapter
);
2233 AT_WRITE_REG(&adapter
->hw
, REG_ISR
, ISR_DIS_INT
);
2234 /* reset MAC to disable all RX/TX */
2235 atl1c_reset_mac(&adapter
->hw
);
2238 adapter
->link_speed
= SPEED_0
;
2239 adapter
->link_duplex
= -1;
2240 atl1c_clean_tx_ring(adapter
, atl1c_trans_normal
);
2241 atl1c_clean_tx_ring(adapter
, atl1c_trans_high
);
2242 atl1c_clean_rx_ring(adapter
);
2246 * atl1c_open - Called when a network interface is made active
2247 * @netdev: network interface device structure
2249 * Returns 0 on success, negative value on failure
2251 * The open entry point is called when a network interface is made
2252 * active by the system (IFF_UP). At this point all resources needed
2253 * for transmit and receive operations are allocated, the interrupt
2254 * handler is registered with the OS, the watchdog timer is started,
2255 * and the stack is notified that the interface is ready.
2257 static int atl1c_open(struct net_device
*netdev
)
2259 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
2262 /* disallow open during test */
2263 if (test_bit(__AT_TESTING
, &adapter
->flags
))
2266 /* allocate rx/tx dma buffer & descriptors */
2267 err
= atl1c_setup_ring_resources(adapter
);
2271 err
= atl1c_up(adapter
);
2275 if (adapter
->hw
.ctrl_flags
& ATL1C_FPGA_VERSION
) {
2278 AT_READ_REG(&adapter
->hw
, REG_MDIO_CTRL
, &phy_data
);
2279 phy_data
|= MDIO_AP_EN
;
2280 AT_WRITE_REG(&adapter
->hw
, REG_MDIO_CTRL
, phy_data
);
2285 atl1c_free_irq(adapter
);
2286 atl1c_free_ring_resources(adapter
);
2287 atl1c_reset_mac(&adapter
->hw
);
2292 * atl1c_close - Disables a network interface
2293 * @netdev: network interface device structure
2295 * Returns 0, this is not allowed to fail
2297 * The close entry point is called when an interface is de-activated
2298 * by the OS. The hardware is still under the drivers control, but
2299 * needs to be disabled. A global MAC reset is issued to stop the
2300 * hardware, and all transmit and receive resources are freed.
2302 static int atl1c_close(struct net_device
*netdev
)
2304 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
2306 WARN_ON(test_bit(__AT_RESETTING
, &adapter
->flags
));
2307 atl1c_down(adapter
);
2308 atl1c_free_ring_resources(adapter
);
2312 static int atl1c_suspend(struct pci_dev
*pdev
, pm_message_t state
)
2314 struct net_device
*netdev
= pci_get_drvdata(pdev
);
2315 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
2316 struct atl1c_hw
*hw
= &adapter
->hw
;
2319 u32 master_ctrl_data
;
2322 u16 save_autoneg_advertised
;
2323 u16 mii_intr_status_data
;
2324 u32 wufc
= adapter
->wol
;
2328 if (netif_running(netdev
)) {
2329 WARN_ON(test_bit(__AT_RESETTING
, &adapter
->flags
));
2330 atl1c_down(adapter
);
2332 netif_device_detach(netdev
);
2333 atl1c_disable_l0s_l1(hw
);
2334 retval
= pci_save_state(pdev
);
2338 AT_READ_REG(hw
, REG_MASTER_CTRL
, &master_ctrl_data
);
2339 master_ctrl_data
&= ~MASTER_CTRL_CLK_SEL_DIS
;
2341 /* get link status */
2342 atl1c_read_phy_reg(hw
, MII_BMSR
, (u16
*)&mii_bmsr_data
);
2343 atl1c_read_phy_reg(hw
, MII_BMSR
, (u16
*)&mii_bmsr_data
);
2344 save_autoneg_advertised
= hw
->autoneg_advertised
;
2345 hw
->autoneg_advertised
= ADVERTISED_10baseT_Half
;
2346 if (atl1c_restart_autoneg(hw
) != 0)
2347 if (netif_msg_link(adapter
))
2348 dev_warn(&pdev
->dev
, "phy autoneg failed\n");
2349 hw
->phy_configured
= false; /* re-init PHY when resume */
2350 hw
->autoneg_advertised
= save_autoneg_advertised
;
2351 /* turn on magic packet wol */
2352 if (wufc
& AT_WUFC_MAG
)
2353 wol_ctrl_data
= WOL_MAGIC_EN
| WOL_MAGIC_PME_EN
;
2355 if (wufc
& AT_WUFC_LNKC
) {
2356 for (i
= 0; i
< AT_SUSPEND_LINK_TIMEOUT
; i
++) {
2358 atl1c_read_phy_reg(hw
, MII_BMSR
,
2359 (u16
*)&mii_bmsr_data
);
2360 if (mii_bmsr_data
& BMSR_LSTATUS
)
2363 if ((mii_bmsr_data
& BMSR_LSTATUS
) == 0)
2364 if (netif_msg_link(adapter
))
2365 dev_warn(&pdev
->dev
,
2366 "%s: Link may change"
2369 wol_ctrl_data
|= WOL_LINK_CHG_EN
| WOL_LINK_CHG_PME_EN
;
2370 /* only link up can wake up */
2371 if (atl1c_write_phy_reg(hw
, MII_IER
, IER_LINK_UP
) != 0) {
2372 if (netif_msg_link(adapter
))
2374 "%s: read write phy "
2375 "register failed.\n",
2380 /* clear phy interrupt */
2381 atl1c_read_phy_reg(hw
, MII_ISR
, &mii_intr_status_data
);
2382 /* Config MAC Ctrl register */
2383 mac_ctrl_data
= MAC_CTRL_RX_EN
;
2384 /* set to 10/100M halt duplex */
2385 mac_ctrl_data
|= atl1c_mac_speed_10_100
<< MAC_CTRL_SPEED_SHIFT
;
2386 mac_ctrl_data
|= (((u32
)adapter
->hw
.preamble_len
&
2387 MAC_CTRL_PRMLEN_MASK
) <<
2388 MAC_CTRL_PRMLEN_SHIFT
);
2391 mac_ctrl_data
|= MAC_CTRL_RMV_VLAN
;
2393 /* magic packet maybe Broadcast&multicast&Unicast frame */
2394 if (wufc
& AT_WUFC_MAG
)
2395 mac_ctrl_data
|= MAC_CTRL_BC_EN
;
2397 if (netif_msg_hw(adapter
))
2399 "%s: suspend MAC=0x%x\n",
2400 atl1c_driver_name
, mac_ctrl_data
);
2401 AT_WRITE_REG(hw
, REG_MASTER_CTRL
, master_ctrl_data
);
2402 AT_WRITE_REG(hw
, REG_WOL_CTRL
, wol_ctrl_data
);
2403 AT_WRITE_REG(hw
, REG_MAC_CTRL
, mac_ctrl_data
);
2406 AT_READ_REG(hw
, REG_PCIE_PHYMISC
, &ctrl
);
2407 ctrl
|= PCIE_PHYMISC_FORCE_RCV_DET
;
2408 AT_WRITE_REG(hw
, REG_PCIE_PHYMISC
, ctrl
);
2410 pci_enable_wake(pdev
, pci_choose_state(pdev
, state
), 1);
2416 AT_WRITE_REG(hw
, REG_WOL_CTRL
, 0);
2419 AT_READ_REG(hw
, REG_PCIE_PHYMISC
, &ctrl
);
2420 ctrl
|= PCIE_PHYMISC_FORCE_RCV_DET
;
2421 AT_WRITE_REG(hw
, REG_PCIE_PHYMISC
, ctrl
);
2423 atl1c_phy_disable(hw
);
2424 hw
->phy_configured
= false; /* re-init PHY when resume */
2426 pci_enable_wake(pdev
, pci_choose_state(pdev
, state
), 0);
2429 pci_disable_device(pdev
);
2430 pci_set_power_state(pdev
, pci_choose_state(pdev
, state
));
2435 static int atl1c_resume(struct pci_dev
*pdev
)
2437 struct net_device
*netdev
= pci_get_drvdata(pdev
);
2438 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
2440 pci_set_power_state(pdev
, PCI_D0
);
2441 pci_restore_state(pdev
);
2442 pci_enable_wake(pdev
, PCI_D3hot
, 0);
2443 pci_enable_wake(pdev
, PCI_D3cold
, 0);
2445 AT_WRITE_REG(&adapter
->hw
, REG_WOL_CTRL
, 0);
2447 atl1c_phy_reset(&adapter
->hw
);
2448 atl1c_reset_mac(&adapter
->hw
);
2449 netif_device_attach(netdev
);
2450 if (netif_running(netdev
))
2456 static void atl1c_shutdown(struct pci_dev
*pdev
)
2458 atl1c_suspend(pdev
, PMSG_SUSPEND
);
2461 static const struct net_device_ops atl1c_netdev_ops
= {
2462 .ndo_open
= atl1c_open
,
2463 .ndo_stop
= atl1c_close
,
2464 .ndo_validate_addr
= eth_validate_addr
,
2465 .ndo_start_xmit
= atl1c_xmit_frame
,
2466 .ndo_set_mac_address
= atl1c_set_mac_addr
,
2467 .ndo_set_multicast_list
= atl1c_set_multi
,
2468 .ndo_change_mtu
= atl1c_change_mtu
,
2469 .ndo_do_ioctl
= atl1c_ioctl
,
2470 .ndo_tx_timeout
= atl1c_tx_timeout
,
2471 .ndo_get_stats
= atl1c_get_stats
,
2472 .ndo_vlan_rx_register
= atl1c_vlan_rx_register
,
2473 #ifdef CONFIG_NET_POLL_CONTROLLER
2474 .ndo_poll_controller
= atl1c_netpoll
,
2478 static int atl1c_init_netdev(struct net_device
*netdev
, struct pci_dev
*pdev
)
2480 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
2481 pci_set_drvdata(pdev
, netdev
);
2483 netdev
->irq
= pdev
->irq
;
2484 netdev
->netdev_ops
= &atl1c_netdev_ops
;
2485 netdev
->watchdog_timeo
= AT_TX_WATCHDOG
;
2486 atl1c_set_ethtool_ops(netdev
);
2488 /* TODO: add when ready */
2489 netdev
->features
= NETIF_F_SG
|
2491 NETIF_F_HW_VLAN_TX
|
2492 NETIF_F_HW_VLAN_RX
|
2499 * atl1c_probe - Device Initialization Routine
2500 * @pdev: PCI device information struct
2501 * @ent: entry in atl1c_pci_tbl
2503 * Returns 0 on success, negative on failure
2505 * atl1c_probe initializes an adapter identified by a pci_dev structure.
2506 * The OS initialization, configuring of the adapter private structure,
2507 * and a hardware reset occur.
2509 static int __devinit
atl1c_probe(struct pci_dev
*pdev
,
2510 const struct pci_device_id
*ent
)
2512 struct net_device
*netdev
;
2513 struct atl1c_adapter
*adapter
;
2514 static int cards_found
;
2518 /* enable device (incl. PCI PM wakeup and hotplug setup) */
2519 err
= pci_enable_device_mem(pdev
);
2521 dev_err(&pdev
->dev
, "cannot enable PCI device\n");
2526 * The atl1c chip can DMA to 64-bit addresses, but it uses a single
2527 * shared register for the high 32 bits, so only a single, aligned,
2528 * 4 GB physical address range can be used at a time.
2530 * Supporting 64-bit DMA on this hardware is more trouble than it's
2531 * worth. It is far easier to limit to 32-bit DMA than update
2532 * various kernel subsystems to support the mechanics required by a
2533 * fixed-high-32-bit system.
2535 if ((pci_set_dma_mask(pdev
, DMA_BIT_MASK(32)) != 0) ||
2536 (pci_set_consistent_dma_mask(pdev
, DMA_BIT_MASK(32)) != 0)) {
2537 dev_err(&pdev
->dev
, "No usable DMA configuration,aborting\n");
2541 err
= pci_request_regions(pdev
, atl1c_driver_name
);
2543 dev_err(&pdev
->dev
, "cannot obtain PCI resources\n");
2547 pci_set_master(pdev
);
2549 netdev
= alloc_etherdev(sizeof(struct atl1c_adapter
));
2550 if (netdev
== NULL
) {
2552 dev_err(&pdev
->dev
, "etherdev alloc failed\n");
2553 goto err_alloc_etherdev
;
2556 err
= atl1c_init_netdev(netdev
, pdev
);
2558 dev_err(&pdev
->dev
, "init netdevice failed\n");
2559 goto err_init_netdev
;
2561 adapter
= netdev_priv(netdev
);
2562 adapter
->bd_number
= cards_found
;
2563 adapter
->netdev
= netdev
;
2564 adapter
->pdev
= pdev
;
2565 adapter
->hw
.adapter
= adapter
;
2566 adapter
->msg_enable
= netif_msg_init(-1, atl1c_default_msg
);
2567 adapter
->hw
.hw_addr
= ioremap(pci_resource_start(pdev
, 0), pci_resource_len(pdev
, 0));
2568 if (!adapter
->hw
.hw_addr
) {
2570 dev_err(&pdev
->dev
, "cannot map device registers\n");
2573 netdev
->base_addr
= (unsigned long)adapter
->hw
.hw_addr
;
2576 adapter
->mii
.dev
= netdev
;
2577 adapter
->mii
.mdio_read
= atl1c_mdio_read
;
2578 adapter
->mii
.mdio_write
= atl1c_mdio_write
;
2579 adapter
->mii
.phy_id_mask
= 0x1f;
2580 adapter
->mii
.reg_num_mask
= MDIO_REG_ADDR_MASK
;
2581 netif_napi_add(netdev
, &adapter
->napi
, atl1c_clean
, 64);
2582 setup_timer(&adapter
->phy_config_timer
, atl1c_phy_config
,
2583 (unsigned long)adapter
);
2584 /* setup the private structure */
2585 err
= atl1c_sw_init(adapter
);
2587 dev_err(&pdev
->dev
, "net device private data init failed\n");
2590 atl1c_reset_pcie(&adapter
->hw
, ATL1C_PCIE_L0S_L1_DISABLE
|
2591 ATL1C_PCIE_PHY_RESET
);
2593 /* Init GPHY as early as possible due to power saving issue */
2594 atl1c_phy_reset(&adapter
->hw
);
2596 err
= atl1c_reset_mac(&adapter
->hw
);
2602 device_init_wakeup(&pdev
->dev
, 1);
2603 /* reset the controller to
2604 * put the device in a known good starting state */
2605 err
= atl1c_phy_init(&adapter
->hw
);
2610 if (atl1c_read_mac_addr(&adapter
->hw
) != 0) {
2612 dev_err(&pdev
->dev
, "get mac address failed\n");
2615 memcpy(netdev
->dev_addr
, adapter
->hw
.mac_addr
, netdev
->addr_len
);
2616 memcpy(netdev
->perm_addr
, adapter
->hw
.mac_addr
, netdev
->addr_len
);
2617 if (netif_msg_probe(adapter
))
2619 "mac address : %02x-%02x-%02x-%02x-%02x-%02x\n",
2620 adapter
->hw
.mac_addr
[0], adapter
->hw
.mac_addr
[1],
2621 adapter
->hw
.mac_addr
[2], adapter
->hw
.mac_addr
[3],
2622 adapter
->hw
.mac_addr
[4], adapter
->hw
.mac_addr
[5]);
2624 atl1c_hw_set_mac_addr(&adapter
->hw
);
2625 INIT_WORK(&adapter
->reset_task
, atl1c_reset_task
);
2626 INIT_WORK(&adapter
->link_chg_task
, atl1c_link_chg_task
);
2627 err
= register_netdev(netdev
);
2629 dev_err(&pdev
->dev
, "register netdevice failed\n");
2633 if (netif_msg_probe(adapter
))
2634 dev_info(&pdev
->dev
, "version %s\n", ATL1C_DRV_VERSION
);
2642 iounmap(adapter
->hw
.hw_addr
);
2645 free_netdev(netdev
);
2647 pci_release_regions(pdev
);
2650 pci_disable_device(pdev
);
2655 * atl1c_remove - Device Removal Routine
2656 * @pdev: PCI device information struct
2658 * atl1c_remove is called by the PCI subsystem to alert the driver
2659 * that it should release a PCI device. The could be caused by a
2660 * Hot-Plug event, or because the driver is going to be removed from
2663 static void __devexit
atl1c_remove(struct pci_dev
*pdev
)
2665 struct net_device
*netdev
= pci_get_drvdata(pdev
);
2666 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
2668 unregister_netdev(netdev
);
2669 atl1c_phy_disable(&adapter
->hw
);
2671 iounmap(adapter
->hw
.hw_addr
);
2673 pci_release_regions(pdev
);
2674 pci_disable_device(pdev
);
2675 free_netdev(netdev
);
2679 * atl1c_io_error_detected - called when PCI error is detected
2680 * @pdev: Pointer to PCI device
2681 * @state: The current pci connection state
2683 * This function is called after a PCI bus error affecting
2684 * this device has been detected.
2686 static pci_ers_result_t
atl1c_io_error_detected(struct pci_dev
*pdev
,
2687 pci_channel_state_t state
)
2689 struct net_device
*netdev
= pci_get_drvdata(pdev
);
2690 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
2692 netif_device_detach(netdev
);
2694 if (netif_running(netdev
))
2695 atl1c_down(adapter
);
2697 pci_disable_device(pdev
);
2699 /* Request a slot slot reset. */
2700 return PCI_ERS_RESULT_NEED_RESET
;
2704 * atl1c_io_slot_reset - called after the pci bus has been reset.
2705 * @pdev: Pointer to PCI device
2707 * Restart the card from scratch, as if from a cold-boot. Implementation
2708 * resembles the first-half of the e1000_resume routine.
2710 static pci_ers_result_t
atl1c_io_slot_reset(struct pci_dev
*pdev
)
2712 struct net_device
*netdev
= pci_get_drvdata(pdev
);
2713 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
2715 if (pci_enable_device(pdev
)) {
2716 if (netif_msg_hw(adapter
))
2718 "Cannot re-enable PCI device after reset\n");
2719 return PCI_ERS_RESULT_DISCONNECT
;
2721 pci_set_master(pdev
);
2723 pci_enable_wake(pdev
, PCI_D3hot
, 0);
2724 pci_enable_wake(pdev
, PCI_D3cold
, 0);
2726 atl1c_reset_mac(&adapter
->hw
);
2728 return PCI_ERS_RESULT_RECOVERED
;
2732 * atl1c_io_resume - called when traffic can start flowing again.
2733 * @pdev: Pointer to PCI device
2735 * This callback is called when the error recovery driver tells us that
2736 * its OK to resume normal operation. Implementation resembles the
2737 * second-half of the atl1c_resume routine.
2739 static void atl1c_io_resume(struct pci_dev
*pdev
)
2741 struct net_device
*netdev
= pci_get_drvdata(pdev
);
2742 struct atl1c_adapter
*adapter
= netdev_priv(netdev
);
2744 if (netif_running(netdev
)) {
2745 if (atl1c_up(adapter
)) {
2746 if (netif_msg_hw(adapter
))
2748 "Cannot bring device back up after reset\n");
2753 netif_device_attach(netdev
);
2756 static struct pci_error_handlers atl1c_err_handler
= {
2757 .error_detected
= atl1c_io_error_detected
,
2758 .slot_reset
= atl1c_io_slot_reset
,
2759 .resume
= atl1c_io_resume
,
2762 static struct pci_driver atl1c_driver
= {
2763 .name
= atl1c_driver_name
,
2764 .id_table
= atl1c_pci_tbl
,
2765 .probe
= atl1c_probe
,
2766 .remove
= __devexit_p(atl1c_remove
),
2767 /* Power Managment Hooks */
2768 .suspend
= atl1c_suspend
,
2769 .resume
= atl1c_resume
,
2770 .shutdown
= atl1c_shutdown
,
2771 .err_handler
= &atl1c_err_handler
2775 * atl1c_init_module - Driver Registration Routine
2777 * atl1c_init_module is the first routine called when the driver is
2778 * loaded. All it does is register with the PCI subsystem.
2780 static int __init
atl1c_init_module(void)
2782 return pci_register_driver(&atl1c_driver
);
2786 * atl1c_exit_module - Driver Exit Cleanup Routine
2788 * atl1c_exit_module is called just before the driver is removed
2791 static void __exit
atl1c_exit_module(void)
2793 pci_unregister_driver(&atl1c_driver
);
2796 module_init(atl1c_init_module
);
2797 module_exit(atl1c_exit_module
);