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a6a53252 JY |
1 | /* |
2 | * Copyright(c) 2007 Atheros Corporation. All rights reserved. | |
3 | * | |
4 | * Derived from Intel e1000 driver | |
5 | * Copyright(c) 1999 - 2005 Intel Corporation. All rights reserved. | |
6 | * | |
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) | |
10 | * any later version. | |
11 | * | |
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 | |
15 | * more details. | |
16 | * | |
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. | |
20 | */ | |
21 | ||
22 | #include "atl1e.h" | |
23 | ||
24 | #define DRV_VERSION "1.0.0.7-NAPI" | |
25 | ||
26 | char atl1e_driver_name[] = "ATL1E"; | |
27 | char atl1e_driver_version[] = DRV_VERSION; | |
28 | #define PCI_DEVICE_ID_ATTANSIC_L1E 0x1026 | |
29 | /* | |
30 | * atl1e_pci_tbl - PCI Device ID Table | |
31 | * | |
32 | * Wildcard entries (PCI_ANY_ID) should come last | |
33 | * Last entry must be all 0s | |
34 | * | |
35 | * { Vendor ID, Device ID, SubVendor ID, SubDevice ID, | |
36 | * Class, Class Mask, private data (not used) } | |
37 | */ | |
a3aa1884 | 38 | static DEFINE_PCI_DEVICE_TABLE(atl1e_pci_tbl) = { |
a6a53252 | 39 | {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC, PCI_DEVICE_ID_ATTANSIC_L1E)}, |
bdb0e010 | 40 | {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC, 0x1066)}, |
a6a53252 JY |
41 | /* required last entry */ |
42 | { 0 } | |
43 | }; | |
44 | MODULE_DEVICE_TABLE(pci, atl1e_pci_tbl); | |
45 | ||
46 | MODULE_AUTHOR("Atheros Corporation, <xiong.huang@atheros.com>, Jie Yang <jie.yang@atheros.com>"); | |
47 | MODULE_DESCRIPTION("Atheros 1000M Ethernet Network Driver"); | |
48 | MODULE_LICENSE("GPL"); | |
49 | MODULE_VERSION(DRV_VERSION); | |
50 | ||
e6ca2328 | 51 | static void atl1e_setup_mac_ctrl(struct atl1e_adapter *adapter); |
a6a53252 JY |
52 | |
53 | static const u16 | |
54 | atl1e_rx_page_vld_regs[AT_MAX_RECEIVE_QUEUE][AT_PAGE_NUM_PER_QUEUE] = | |
55 | { | |
56 | {REG_HOST_RXF0_PAGE0_VLD, REG_HOST_RXF0_PAGE1_VLD}, | |
57 | {REG_HOST_RXF1_PAGE0_VLD, REG_HOST_RXF1_PAGE1_VLD}, | |
58 | {REG_HOST_RXF2_PAGE0_VLD, REG_HOST_RXF2_PAGE1_VLD}, | |
59 | {REG_HOST_RXF3_PAGE0_VLD, REG_HOST_RXF3_PAGE1_VLD} | |
60 | }; | |
61 | ||
62 | static const u16 atl1e_rx_page_hi_addr_regs[AT_MAX_RECEIVE_QUEUE] = | |
63 | { | |
64 | REG_RXF0_BASE_ADDR_HI, | |
65 | REG_RXF1_BASE_ADDR_HI, | |
66 | REG_RXF2_BASE_ADDR_HI, | |
67 | REG_RXF3_BASE_ADDR_HI | |
68 | }; | |
69 | ||
70 | static const u16 | |
71 | atl1e_rx_page_lo_addr_regs[AT_MAX_RECEIVE_QUEUE][AT_PAGE_NUM_PER_QUEUE] = | |
72 | { | |
73 | {REG_HOST_RXF0_PAGE0_LO, REG_HOST_RXF0_PAGE1_LO}, | |
74 | {REG_HOST_RXF1_PAGE0_LO, REG_HOST_RXF1_PAGE1_LO}, | |
75 | {REG_HOST_RXF2_PAGE0_LO, REG_HOST_RXF2_PAGE1_LO}, | |
76 | {REG_HOST_RXF3_PAGE0_LO, REG_HOST_RXF3_PAGE1_LO} | |
77 | }; | |
78 | ||
79 | static const u16 | |
80 | atl1e_rx_page_write_offset_regs[AT_MAX_RECEIVE_QUEUE][AT_PAGE_NUM_PER_QUEUE] = | |
81 | { | |
82 | {REG_HOST_RXF0_MB0_LO, REG_HOST_RXF0_MB1_LO}, | |
83 | {REG_HOST_RXF1_MB0_LO, REG_HOST_RXF1_MB1_LO}, | |
84 | {REG_HOST_RXF2_MB0_LO, REG_HOST_RXF2_MB1_LO}, | |
85 | {REG_HOST_RXF3_MB0_LO, REG_HOST_RXF3_MB1_LO} | |
86 | }; | |
87 | ||
88 | static const u16 atl1e_pay_load_size[] = { | |
89 | 128, 256, 512, 1024, 2048, 4096, | |
90 | }; | |
91 | ||
92 | /* | |
93 | * atl1e_irq_enable - Enable default interrupt generation settings | |
94 | * @adapter: board private structure | |
95 | */ | |
96 | static inline void atl1e_irq_enable(struct atl1e_adapter *adapter) | |
97 | { | |
98 | if (likely(atomic_dec_and_test(&adapter->irq_sem))) { | |
99 | AT_WRITE_REG(&adapter->hw, REG_ISR, 0); | |
100 | AT_WRITE_REG(&adapter->hw, REG_IMR, IMR_NORMAL_MASK); | |
101 | AT_WRITE_FLUSH(&adapter->hw); | |
102 | } | |
103 | } | |
104 | ||
105 | /* | |
106 | * atl1e_irq_disable - Mask off interrupt generation on the NIC | |
107 | * @adapter: board private structure | |
108 | */ | |
109 | static inline void atl1e_irq_disable(struct atl1e_adapter *adapter) | |
110 | { | |
111 | atomic_inc(&adapter->irq_sem); | |
112 | AT_WRITE_REG(&adapter->hw, REG_IMR, 0); | |
113 | AT_WRITE_FLUSH(&adapter->hw); | |
114 | synchronize_irq(adapter->pdev->irq); | |
115 | } | |
116 | ||
117 | /* | |
118 | * atl1e_irq_reset - reset interrupt confiure on the NIC | |
119 | * @adapter: board private structure | |
120 | */ | |
121 | static inline void atl1e_irq_reset(struct atl1e_adapter *adapter) | |
122 | { | |
123 | atomic_set(&adapter->irq_sem, 0); | |
124 | AT_WRITE_REG(&adapter->hw, REG_ISR, 0); | |
125 | AT_WRITE_REG(&adapter->hw, REG_IMR, 0); | |
126 | AT_WRITE_FLUSH(&adapter->hw); | |
127 | } | |
128 | ||
129 | /* | |
130 | * atl1e_phy_config - Timer Call-back | |
131 | * @data: pointer to netdev cast into an unsigned long | |
132 | */ | |
133 | static void atl1e_phy_config(unsigned long data) | |
134 | { | |
135 | struct atl1e_adapter *adapter = (struct atl1e_adapter *) data; | |
136 | struct atl1e_hw *hw = &adapter->hw; | |
137 | unsigned long flags; | |
138 | ||
139 | spin_lock_irqsave(&adapter->mdio_lock, flags); | |
140 | atl1e_restart_autoneg(hw); | |
141 | spin_unlock_irqrestore(&adapter->mdio_lock, flags); | |
142 | } | |
143 | ||
144 | void atl1e_reinit_locked(struct atl1e_adapter *adapter) | |
145 | { | |
146 | ||
147 | WARN_ON(in_interrupt()); | |
148 | while (test_and_set_bit(__AT_RESETTING, &adapter->flags)) | |
149 | msleep(1); | |
150 | atl1e_down(adapter); | |
151 | atl1e_up(adapter); | |
152 | clear_bit(__AT_RESETTING, &adapter->flags); | |
153 | } | |
154 | ||
155 | static void atl1e_reset_task(struct work_struct *work) | |
156 | { | |
157 | struct atl1e_adapter *adapter; | |
158 | adapter = container_of(work, struct atl1e_adapter, reset_task); | |
159 | ||
160 | atl1e_reinit_locked(adapter); | |
161 | } | |
162 | ||
163 | static int atl1e_check_link(struct atl1e_adapter *adapter) | |
164 | { | |
165 | struct atl1e_hw *hw = &adapter->hw; | |
166 | struct net_device *netdev = adapter->netdev; | |
167 | struct pci_dev *pdev = adapter->pdev; | |
168 | int err = 0; | |
169 | u16 speed, duplex, phy_data; | |
170 | ||
171 | /* MII_BMSR must read twise */ | |
172 | atl1e_read_phy_reg(hw, MII_BMSR, &phy_data); | |
173 | atl1e_read_phy_reg(hw, MII_BMSR, &phy_data); | |
174 | if ((phy_data & BMSR_LSTATUS) == 0) { | |
175 | /* link down */ | |
176 | if (netif_carrier_ok(netdev)) { /* old link state: Up */ | |
177 | u32 value; | |
178 | /* disable rx */ | |
179 | value = AT_READ_REG(hw, REG_MAC_CTRL); | |
180 | value &= ~MAC_CTRL_RX_EN; | |
181 | AT_WRITE_REG(hw, REG_MAC_CTRL, value); | |
182 | adapter->link_speed = SPEED_0; | |
183 | netif_carrier_off(netdev); | |
184 | netif_stop_queue(netdev); | |
185 | } | |
186 | } else { | |
187 | /* Link Up */ | |
188 | err = atl1e_get_speed_and_duplex(hw, &speed, &duplex); | |
189 | if (unlikely(err)) | |
190 | return err; | |
191 | ||
192 | /* link result is our setting */ | |
193 | if (adapter->link_speed != speed || | |
194 | adapter->link_duplex != duplex) { | |
195 | adapter->link_speed = speed; | |
196 | adapter->link_duplex = duplex; | |
197 | atl1e_setup_mac_ctrl(adapter); | |
198 | dev_info(&pdev->dev, | |
199 | "%s: %s NIC Link is Up<%d Mbps %s>\n", | |
200 | atl1e_driver_name, netdev->name, | |
201 | adapter->link_speed, | |
202 | adapter->link_duplex == FULL_DUPLEX ? | |
203 | "Full Duplex" : "Half Duplex"); | |
204 | } | |
205 | ||
206 | if (!netif_carrier_ok(netdev)) { | |
207 | /* Link down -> Up */ | |
208 | netif_carrier_on(netdev); | |
209 | netif_wake_queue(netdev); | |
210 | } | |
211 | } | |
212 | return 0; | |
213 | } | |
214 | ||
215 | /* | |
216 | * atl1e_link_chg_task - deal with link change event Out of interrupt context | |
217 | * @netdev: network interface device structure | |
218 | */ | |
219 | static void atl1e_link_chg_task(struct work_struct *work) | |
220 | { | |
221 | struct atl1e_adapter *adapter; | |
222 | unsigned long flags; | |
223 | ||
224 | adapter = container_of(work, struct atl1e_adapter, link_chg_task); | |
225 | spin_lock_irqsave(&adapter->mdio_lock, flags); | |
226 | atl1e_check_link(adapter); | |
227 | spin_unlock_irqrestore(&adapter->mdio_lock, flags); | |
228 | } | |
229 | ||
230 | static void atl1e_link_chg_event(struct atl1e_adapter *adapter) | |
231 | { | |
232 | struct net_device *netdev = adapter->netdev; | |
233 | struct pci_dev *pdev = adapter->pdev; | |
234 | u16 phy_data = 0; | |
235 | u16 link_up = 0; | |
236 | ||
237 | spin_lock(&adapter->mdio_lock); | |
238 | atl1e_read_phy_reg(&adapter->hw, MII_BMSR, &phy_data); | |
239 | atl1e_read_phy_reg(&adapter->hw, MII_BMSR, &phy_data); | |
240 | spin_unlock(&adapter->mdio_lock); | |
241 | link_up = phy_data & BMSR_LSTATUS; | |
242 | /* notify upper layer link down ASAP */ | |
243 | if (!link_up) { | |
244 | if (netif_carrier_ok(netdev)) { | |
245 | /* old link state: Up */ | |
246 | dev_info(&pdev->dev, "%s: %s NIC Link is Down\n", | |
247 | atl1e_driver_name, netdev->name); | |
248 | adapter->link_speed = SPEED_0; | |
249 | netif_stop_queue(netdev); | |
250 | } | |
251 | } | |
252 | schedule_work(&adapter->link_chg_task); | |
253 | } | |
254 | ||
255 | static void atl1e_del_timer(struct atl1e_adapter *adapter) | |
256 | { | |
257 | del_timer_sync(&adapter->phy_config_timer); | |
258 | } | |
259 | ||
260 | static void atl1e_cancel_work(struct atl1e_adapter *adapter) | |
261 | { | |
262 | cancel_work_sync(&adapter->reset_task); | |
263 | cancel_work_sync(&adapter->link_chg_task); | |
264 | } | |
265 | ||
266 | /* | |
267 | * atl1e_tx_timeout - Respond to a Tx Hang | |
268 | * @netdev: network interface device structure | |
269 | */ | |
270 | static void atl1e_tx_timeout(struct net_device *netdev) | |
271 | { | |
272 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
273 | ||
274 | /* Do the reset outside of interrupt context */ | |
275 | schedule_work(&adapter->reset_task); | |
276 | } | |
277 | ||
278 | /* | |
279 | * atl1e_set_multi - Multicast and Promiscuous mode set | |
280 | * @netdev: network interface device structure | |
281 | * | |
282 | * The set_multi entry point is called whenever the multicast address | |
283 | * list or the network interface flags are updated. This routine is | |
284 | * responsible for configuring the hardware for proper multicast, | |
285 | * promiscuous mode, and all-multi behavior. | |
286 | */ | |
287 | static void atl1e_set_multi(struct net_device *netdev) | |
288 | { | |
289 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
290 | struct atl1e_hw *hw = &adapter->hw; | |
291 | struct dev_mc_list *mc_ptr; | |
292 | u32 mac_ctrl_data = 0; | |
293 | u32 hash_value; | |
294 | ||
295 | /* Check for Promiscuous and All Multicast modes */ | |
296 | mac_ctrl_data = AT_READ_REG(hw, REG_MAC_CTRL); | |
297 | ||
298 | if (netdev->flags & IFF_PROMISC) { | |
299 | mac_ctrl_data |= MAC_CTRL_PROMIS_EN; | |
300 | } else if (netdev->flags & IFF_ALLMULTI) { | |
301 | mac_ctrl_data |= MAC_CTRL_MC_ALL_EN; | |
302 | mac_ctrl_data &= ~MAC_CTRL_PROMIS_EN; | |
303 | } else { | |
304 | mac_ctrl_data &= ~(MAC_CTRL_PROMIS_EN | MAC_CTRL_MC_ALL_EN); | |
305 | } | |
306 | ||
307 | AT_WRITE_REG(hw, REG_MAC_CTRL, mac_ctrl_data); | |
308 | ||
309 | /* clear the old settings from the multicast hash table */ | |
310 | AT_WRITE_REG(hw, REG_RX_HASH_TABLE, 0); | |
311 | AT_WRITE_REG_ARRAY(hw, REG_RX_HASH_TABLE, 1, 0); | |
312 | ||
313 | /* comoute mc addresses' hash value ,and put it into hash table */ | |
314 | for (mc_ptr = netdev->mc_list; mc_ptr; mc_ptr = mc_ptr->next) { | |
315 | hash_value = atl1e_hash_mc_addr(hw, mc_ptr->dmi_addr); | |
316 | atl1e_hash_set(hw, hash_value); | |
317 | } | |
318 | } | |
319 | ||
320 | static void atl1e_vlan_rx_register(struct net_device *netdev, | |
321 | struct vlan_group *grp) | |
322 | { | |
323 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
324 | struct pci_dev *pdev = adapter->pdev; | |
325 | u32 mac_ctrl_data = 0; | |
326 | ||
327 | dev_dbg(&pdev->dev, "atl1e_vlan_rx_register\n"); | |
328 | ||
329 | atl1e_irq_disable(adapter); | |
330 | ||
331 | adapter->vlgrp = grp; | |
332 | mac_ctrl_data = AT_READ_REG(&adapter->hw, REG_MAC_CTRL); | |
333 | ||
334 | if (grp) { | |
335 | /* enable VLAN tag insert/strip */ | |
336 | mac_ctrl_data |= MAC_CTRL_RMV_VLAN; | |
337 | } else { | |
338 | /* disable VLAN tag insert/strip */ | |
339 | mac_ctrl_data &= ~MAC_CTRL_RMV_VLAN; | |
340 | } | |
341 | ||
342 | AT_WRITE_REG(&adapter->hw, REG_MAC_CTRL, mac_ctrl_data); | |
343 | atl1e_irq_enable(adapter); | |
344 | } | |
345 | ||
346 | static void atl1e_restore_vlan(struct atl1e_adapter *adapter) | |
347 | { | |
348 | struct pci_dev *pdev = adapter->pdev; | |
349 | ||
350 | dev_dbg(&pdev->dev, "atl1e_restore_vlan !"); | |
351 | atl1e_vlan_rx_register(adapter->netdev, adapter->vlgrp); | |
352 | } | |
353 | /* | |
354 | * atl1e_set_mac - Change the Ethernet Address of the NIC | |
355 | * @netdev: network interface device structure | |
356 | * @p: pointer to an address structure | |
357 | * | |
358 | * Returns 0 on success, negative on failure | |
359 | */ | |
360 | static int atl1e_set_mac_addr(struct net_device *netdev, void *p) | |
361 | { | |
362 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
363 | struct sockaddr *addr = p; | |
364 | ||
365 | if (!is_valid_ether_addr(addr->sa_data)) | |
366 | return -EADDRNOTAVAIL; | |
367 | ||
368 | if (netif_running(netdev)) | |
369 | return -EBUSY; | |
370 | ||
371 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
372 | memcpy(adapter->hw.mac_addr, addr->sa_data, netdev->addr_len); | |
373 | ||
374 | atl1e_hw_set_mac_addr(&adapter->hw); | |
375 | ||
376 | return 0; | |
377 | } | |
378 | ||
379 | /* | |
380 | * atl1e_change_mtu - Change the Maximum Transfer Unit | |
381 | * @netdev: network interface device structure | |
382 | * @new_mtu: new value for maximum frame size | |
383 | * | |
384 | * Returns 0 on success, negative on failure | |
385 | */ | |
386 | static int atl1e_change_mtu(struct net_device *netdev, int new_mtu) | |
387 | { | |
388 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
389 | int old_mtu = netdev->mtu; | |
390 | int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN; | |
391 | ||
392 | if ((max_frame < ETH_ZLEN + ETH_FCS_LEN) || | |
393 | (max_frame > MAX_JUMBO_FRAME_SIZE)) { | |
394 | dev_warn(&adapter->pdev->dev, "invalid MTU setting\n"); | |
395 | return -EINVAL; | |
396 | } | |
397 | /* set MTU */ | |
398 | if (old_mtu != new_mtu && netif_running(netdev)) { | |
399 | while (test_and_set_bit(__AT_RESETTING, &adapter->flags)) | |
400 | msleep(1); | |
401 | netdev->mtu = new_mtu; | |
402 | adapter->hw.max_frame_size = new_mtu; | |
403 | adapter->hw.rx_jumbo_th = (max_frame + 7) >> 3; | |
404 | atl1e_down(adapter); | |
405 | atl1e_up(adapter); | |
406 | clear_bit(__AT_RESETTING, &adapter->flags); | |
407 | } | |
408 | return 0; | |
409 | } | |
410 | ||
411 | /* | |
412 | * caller should hold mdio_lock | |
413 | */ | |
414 | static int atl1e_mdio_read(struct net_device *netdev, int phy_id, int reg_num) | |
415 | { | |
416 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
417 | u16 result; | |
418 | ||
419 | atl1e_read_phy_reg(&adapter->hw, reg_num & MDIO_REG_ADDR_MASK, &result); | |
420 | return result; | |
421 | } | |
422 | ||
423 | static void atl1e_mdio_write(struct net_device *netdev, int phy_id, | |
424 | int reg_num, int val) | |
425 | { | |
426 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
427 | ||
428 | atl1e_write_phy_reg(&adapter->hw, reg_num & MDIO_REG_ADDR_MASK, val); | |
429 | } | |
430 | ||
431 | /* | |
432 | * atl1e_mii_ioctl - | |
433 | * @netdev: | |
434 | * @ifreq: | |
435 | * @cmd: | |
436 | */ | |
437 | static int atl1e_mii_ioctl(struct net_device *netdev, | |
438 | struct ifreq *ifr, int cmd) | |
439 | { | |
440 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
441 | struct pci_dev *pdev = adapter->pdev; | |
442 | struct mii_ioctl_data *data = if_mii(ifr); | |
443 | unsigned long flags; | |
444 | int retval = 0; | |
445 | ||
446 | if (!netif_running(netdev)) | |
447 | return -EINVAL; | |
448 | ||
449 | spin_lock_irqsave(&adapter->mdio_lock, flags); | |
450 | switch (cmd) { | |
451 | case SIOCGMIIPHY: | |
452 | data->phy_id = 0; | |
453 | break; | |
454 | ||
455 | case SIOCGMIIREG: | |
a6a53252 JY |
456 | if (atl1e_read_phy_reg(&adapter->hw, data->reg_num & 0x1F, |
457 | &data->val_out)) { | |
458 | retval = -EIO; | |
459 | goto out; | |
460 | } | |
461 | break; | |
462 | ||
463 | case SIOCSMIIREG: | |
a6a53252 JY |
464 | if (data->reg_num & ~(0x1F)) { |
465 | retval = -EFAULT; | |
466 | goto out; | |
467 | } | |
468 | ||
469 | dev_dbg(&pdev->dev, "<atl1e_mii_ioctl> write %x %x", | |
470 | data->reg_num, data->val_in); | |
471 | if (atl1e_write_phy_reg(&adapter->hw, | |
472 | data->reg_num, data->val_in)) { | |
473 | retval = -EIO; | |
474 | goto out; | |
475 | } | |
476 | break; | |
477 | ||
478 | default: | |
479 | retval = -EOPNOTSUPP; | |
480 | break; | |
481 | } | |
482 | out: | |
483 | spin_unlock_irqrestore(&adapter->mdio_lock, flags); | |
484 | return retval; | |
485 | ||
486 | } | |
487 | ||
488 | /* | |
489 | * atl1e_ioctl - | |
490 | * @netdev: | |
491 | * @ifreq: | |
492 | * @cmd: | |
493 | */ | |
494 | static int atl1e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) | |
495 | { | |
496 | switch (cmd) { | |
497 | case SIOCGMIIPHY: | |
498 | case SIOCGMIIREG: | |
499 | case SIOCSMIIREG: | |
500 | return atl1e_mii_ioctl(netdev, ifr, cmd); | |
501 | default: | |
502 | return -EOPNOTSUPP; | |
503 | } | |
504 | } | |
505 | ||
506 | static void atl1e_setup_pcicmd(struct pci_dev *pdev) | |
507 | { | |
508 | u16 cmd; | |
509 | ||
510 | pci_read_config_word(pdev, PCI_COMMAND, &cmd); | |
511 | cmd &= ~(PCI_COMMAND_INTX_DISABLE | PCI_COMMAND_IO); | |
512 | cmd |= (PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER); | |
513 | pci_write_config_word(pdev, PCI_COMMAND, cmd); | |
514 | ||
515 | /* | |
516 | * some motherboards BIOS(PXE/EFI) driver may set PME | |
517 | * while they transfer control to OS (Windows/Linux) | |
518 | * so we should clear this bit before NIC work normally | |
519 | */ | |
520 | pci_write_config_dword(pdev, REG_PM_CTRLSTAT, 0); | |
521 | msleep(1); | |
522 | } | |
523 | ||
524 | /* | |
525 | * atl1e_alloc_queues - Allocate memory for all rings | |
526 | * @adapter: board private structure to initialize | |
527 | * | |
528 | */ | |
529 | static int __devinit atl1e_alloc_queues(struct atl1e_adapter *adapter) | |
530 | { | |
531 | return 0; | |
532 | } | |
533 | ||
534 | /* | |
535 | * atl1e_sw_init - Initialize general software structures (struct atl1e_adapter) | |
536 | * @adapter: board private structure to initialize | |
537 | * | |
538 | * atl1e_sw_init initializes the Adapter private data structure. | |
539 | * Fields are initialized based on PCI device information and | |
540 | * OS network device settings (MTU size). | |
541 | */ | |
542 | static int __devinit atl1e_sw_init(struct atl1e_adapter *adapter) | |
543 | { | |
544 | struct atl1e_hw *hw = &adapter->hw; | |
545 | struct pci_dev *pdev = adapter->pdev; | |
546 | u32 phy_status_data = 0; | |
547 | ||
548 | adapter->wol = 0; | |
549 | adapter->link_speed = SPEED_0; /* hardware init */ | |
550 | adapter->link_duplex = FULL_DUPLEX; | |
551 | adapter->num_rx_queues = 1; | |
552 | ||
553 | /* PCI config space info */ | |
554 | hw->vendor_id = pdev->vendor; | |
555 | hw->device_id = pdev->device; | |
556 | hw->subsystem_vendor_id = pdev->subsystem_vendor; | |
557 | hw->subsystem_id = pdev->subsystem_device; | |
558 | ||
559 | pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id); | |
560 | pci_read_config_word(pdev, PCI_COMMAND, &hw->pci_cmd_word); | |
561 | ||
562 | phy_status_data = AT_READ_REG(hw, REG_PHY_STATUS); | |
563 | /* nic type */ | |
564 | if (hw->revision_id >= 0xF0) { | |
565 | hw->nic_type = athr_l2e_revB; | |
566 | } else { | |
567 | if (phy_status_data & PHY_STATUS_100M) | |
568 | hw->nic_type = athr_l1e; | |
569 | else | |
570 | hw->nic_type = athr_l2e_revA; | |
571 | } | |
572 | ||
573 | phy_status_data = AT_READ_REG(hw, REG_PHY_STATUS); | |
574 | ||
575 | if (phy_status_data & PHY_STATUS_EMI_CA) | |
576 | hw->emi_ca = true; | |
577 | else | |
578 | hw->emi_ca = false; | |
579 | ||
580 | hw->phy_configured = false; | |
581 | hw->preamble_len = 7; | |
582 | hw->max_frame_size = adapter->netdev->mtu; | |
583 | hw->rx_jumbo_th = (hw->max_frame_size + ETH_HLEN + | |
584 | VLAN_HLEN + ETH_FCS_LEN + 7) >> 3; | |
585 | ||
586 | hw->rrs_type = atl1e_rrs_disable; | |
587 | hw->indirect_tab = 0; | |
588 | hw->base_cpu = 0; | |
589 | ||
590 | /* need confirm */ | |
591 | ||
592 | hw->ict = 50000; /* 100ms */ | |
593 | hw->smb_timer = 200000; /* 200ms */ | |
594 | hw->tpd_burst = 5; | |
595 | hw->rrd_thresh = 1; | |
596 | hw->tpd_thresh = adapter->tx_ring.count / 2; | |
597 | hw->rx_count_down = 4; /* 2us resolution */ | |
598 | hw->tx_count_down = hw->imt * 4 / 3; | |
599 | hw->dmar_block = atl1e_dma_req_1024; | |
600 | hw->dmaw_block = atl1e_dma_req_1024; | |
601 | hw->dmar_dly_cnt = 15; | |
602 | hw->dmaw_dly_cnt = 4; | |
603 | ||
604 | if (atl1e_alloc_queues(adapter)) { | |
605 | dev_err(&pdev->dev, "Unable to allocate memory for queues\n"); | |
606 | return -ENOMEM; | |
607 | } | |
608 | ||
609 | atomic_set(&adapter->irq_sem, 1); | |
610 | spin_lock_init(&adapter->mdio_lock); | |
611 | spin_lock_init(&adapter->tx_lock); | |
612 | ||
613 | set_bit(__AT_DOWN, &adapter->flags); | |
614 | ||
615 | return 0; | |
616 | } | |
617 | ||
618 | /* | |
619 | * atl1e_clean_tx_ring - Free Tx-skb | |
620 | * @adapter: board private structure | |
621 | */ | |
622 | static void atl1e_clean_tx_ring(struct atl1e_adapter *adapter) | |
623 | { | |
624 | struct atl1e_tx_ring *tx_ring = (struct atl1e_tx_ring *) | |
625 | &adapter->tx_ring; | |
626 | struct atl1e_tx_buffer *tx_buffer = NULL; | |
627 | struct pci_dev *pdev = adapter->pdev; | |
628 | u16 index, ring_count; | |
629 | ||
630 | if (tx_ring->desc == NULL || tx_ring->tx_buffer == NULL) | |
631 | return; | |
632 | ||
633 | ring_count = tx_ring->count; | |
634 | /* first unmmap dma */ | |
635 | for (index = 0; index < ring_count; index++) { | |
636 | tx_buffer = &tx_ring->tx_buffer[index]; | |
637 | if (tx_buffer->dma) { | |
03f18991 JY |
638 | if (tx_buffer->flags & ATL1E_TX_PCIMAP_SINGLE) |
639 | pci_unmap_single(pdev, tx_buffer->dma, | |
640 | tx_buffer->length, PCI_DMA_TODEVICE); | |
641 | else if (tx_buffer->flags & ATL1E_TX_PCIMAP_PAGE) | |
642 | pci_unmap_page(pdev, tx_buffer->dma, | |
a6a53252 JY |
643 | tx_buffer->length, PCI_DMA_TODEVICE); |
644 | tx_buffer->dma = 0; | |
645 | } | |
646 | } | |
647 | /* second free skb */ | |
648 | for (index = 0; index < ring_count; index++) { | |
649 | tx_buffer = &tx_ring->tx_buffer[index]; | |
650 | if (tx_buffer->skb) { | |
651 | dev_kfree_skb_any(tx_buffer->skb); | |
652 | tx_buffer->skb = NULL; | |
653 | } | |
654 | } | |
655 | /* Zero out Tx-buffers */ | |
656 | memset(tx_ring->desc, 0, sizeof(struct atl1e_tpd_desc) * | |
657 | ring_count); | |
658 | memset(tx_ring->tx_buffer, 0, sizeof(struct atl1e_tx_buffer) * | |
659 | ring_count); | |
660 | } | |
661 | ||
662 | /* | |
663 | * atl1e_clean_rx_ring - Free rx-reservation skbs | |
664 | * @adapter: board private structure | |
665 | */ | |
666 | static void atl1e_clean_rx_ring(struct atl1e_adapter *adapter) | |
667 | { | |
668 | struct atl1e_rx_ring *rx_ring = | |
669 | (struct atl1e_rx_ring *)&adapter->rx_ring; | |
670 | struct atl1e_rx_page_desc *rx_page_desc = rx_ring->rx_page_desc; | |
671 | u16 i, j; | |
672 | ||
673 | ||
674 | if (adapter->ring_vir_addr == NULL) | |
675 | return; | |
676 | /* Zero out the descriptor ring */ | |
677 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
678 | for (j = 0; j < AT_PAGE_NUM_PER_QUEUE; j++) { | |
679 | if (rx_page_desc[i].rx_page[j].addr != NULL) { | |
680 | memset(rx_page_desc[i].rx_page[j].addr, 0, | |
681 | rx_ring->real_page_size); | |
682 | } | |
683 | } | |
684 | } | |
685 | } | |
686 | ||
687 | static void atl1e_cal_ring_size(struct atl1e_adapter *adapter, u32 *ring_size) | |
688 | { | |
689 | *ring_size = ((u32)(adapter->tx_ring.count * | |
690 | sizeof(struct atl1e_tpd_desc) + 7 | |
691 | /* tx ring, qword align */ | |
692 | + adapter->rx_ring.real_page_size * AT_PAGE_NUM_PER_QUEUE * | |
693 | adapter->num_rx_queues + 31 | |
694 | /* rx ring, 32 bytes align */ | |
695 | + (1 + AT_PAGE_NUM_PER_QUEUE * adapter->num_rx_queues) * | |
696 | sizeof(u32) + 3)); | |
697 | /* tx, rx cmd, dword align */ | |
698 | } | |
699 | ||
700 | static void atl1e_init_ring_resources(struct atl1e_adapter *adapter) | |
701 | { | |
702 | struct atl1e_tx_ring *tx_ring = NULL; | |
703 | struct atl1e_rx_ring *rx_ring = NULL; | |
704 | ||
705 | tx_ring = &adapter->tx_ring; | |
706 | rx_ring = &adapter->rx_ring; | |
707 | ||
708 | rx_ring->real_page_size = adapter->rx_ring.page_size | |
709 | + adapter->hw.max_frame_size | |
710 | + ETH_HLEN + VLAN_HLEN | |
711 | + ETH_FCS_LEN; | |
712 | rx_ring->real_page_size = roundup(rx_ring->real_page_size, 32); | |
713 | atl1e_cal_ring_size(adapter, &adapter->ring_size); | |
714 | ||
715 | adapter->ring_vir_addr = NULL; | |
716 | adapter->rx_ring.desc = NULL; | |
717 | rwlock_init(&adapter->tx_ring.tx_lock); | |
718 | ||
719 | return; | |
720 | } | |
721 | ||
722 | /* | |
723 | * Read / Write Ptr Initialize: | |
724 | */ | |
725 | static void atl1e_init_ring_ptrs(struct atl1e_adapter *adapter) | |
726 | { | |
727 | struct atl1e_tx_ring *tx_ring = NULL; | |
728 | struct atl1e_rx_ring *rx_ring = NULL; | |
729 | struct atl1e_rx_page_desc *rx_page_desc = NULL; | |
730 | int i, j; | |
731 | ||
732 | tx_ring = &adapter->tx_ring; | |
733 | rx_ring = &adapter->rx_ring; | |
734 | rx_page_desc = rx_ring->rx_page_desc; | |
735 | ||
736 | tx_ring->next_to_use = 0; | |
737 | atomic_set(&tx_ring->next_to_clean, 0); | |
738 | ||
739 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
740 | rx_page_desc[i].rx_using = 0; | |
741 | rx_page_desc[i].rx_nxseq = 0; | |
742 | for (j = 0; j < AT_PAGE_NUM_PER_QUEUE; j++) { | |
743 | *rx_page_desc[i].rx_page[j].write_offset_addr = 0; | |
744 | rx_page_desc[i].rx_page[j].read_offset = 0; | |
745 | } | |
746 | } | |
747 | } | |
748 | ||
749 | /* | |
750 | * atl1e_free_ring_resources - Free Tx / RX descriptor Resources | |
751 | * @adapter: board private structure | |
752 | * | |
753 | * Free all transmit software resources | |
754 | */ | |
755 | static void atl1e_free_ring_resources(struct atl1e_adapter *adapter) | |
756 | { | |
757 | struct pci_dev *pdev = adapter->pdev; | |
758 | ||
759 | atl1e_clean_tx_ring(adapter); | |
760 | atl1e_clean_rx_ring(adapter); | |
761 | ||
762 | if (adapter->ring_vir_addr) { | |
763 | pci_free_consistent(pdev, adapter->ring_size, | |
764 | adapter->ring_vir_addr, adapter->ring_dma); | |
765 | adapter->ring_vir_addr = NULL; | |
766 | } | |
767 | ||
768 | if (adapter->tx_ring.tx_buffer) { | |
769 | kfree(adapter->tx_ring.tx_buffer); | |
770 | adapter->tx_ring.tx_buffer = NULL; | |
771 | } | |
772 | } | |
773 | ||
774 | /* | |
775 | * atl1e_setup_mem_resources - allocate Tx / RX descriptor resources | |
776 | * @adapter: board private structure | |
777 | * | |
778 | * Return 0 on success, negative on failure | |
779 | */ | |
780 | static int atl1e_setup_ring_resources(struct atl1e_adapter *adapter) | |
781 | { | |
782 | struct pci_dev *pdev = adapter->pdev; | |
783 | struct atl1e_tx_ring *tx_ring; | |
784 | struct atl1e_rx_ring *rx_ring; | |
785 | struct atl1e_rx_page_desc *rx_page_desc; | |
786 | int size, i, j; | |
787 | u32 offset = 0; | |
788 | int err = 0; | |
789 | ||
790 | if (adapter->ring_vir_addr != NULL) | |
791 | return 0; /* alloced already */ | |
792 | ||
793 | tx_ring = &adapter->tx_ring; | |
794 | rx_ring = &adapter->rx_ring; | |
795 | ||
796 | /* real ring DMA buffer */ | |
797 | ||
798 | size = adapter->ring_size; | |
799 | adapter->ring_vir_addr = pci_alloc_consistent(pdev, | |
800 | adapter->ring_size, &adapter->ring_dma); | |
801 | ||
802 | if (adapter->ring_vir_addr == NULL) { | |
803 | dev_err(&pdev->dev, "pci_alloc_consistent failed, " | |
804 | "size = D%d", size); | |
805 | return -ENOMEM; | |
806 | } | |
807 | ||
808 | memset(adapter->ring_vir_addr, 0, adapter->ring_size); | |
809 | ||
810 | rx_page_desc = rx_ring->rx_page_desc; | |
811 | ||
812 | /* Init TPD Ring */ | |
813 | tx_ring->dma = roundup(adapter->ring_dma, 8); | |
814 | offset = tx_ring->dma - adapter->ring_dma; | |
815 | tx_ring->desc = (struct atl1e_tpd_desc *) | |
816 | (adapter->ring_vir_addr + offset); | |
817 | size = sizeof(struct atl1e_tx_buffer) * (tx_ring->count); | |
818 | tx_ring->tx_buffer = kzalloc(size, GFP_KERNEL); | |
819 | if (tx_ring->tx_buffer == NULL) { | |
820 | dev_err(&pdev->dev, "kzalloc failed , size = D%d", size); | |
821 | err = -ENOMEM; | |
822 | goto failed; | |
823 | } | |
824 | ||
825 | /* Init RXF-Pages */ | |
826 | offset += (sizeof(struct atl1e_tpd_desc) * tx_ring->count); | |
827 | offset = roundup(offset, 32); | |
828 | ||
829 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
830 | for (j = 0; j < AT_PAGE_NUM_PER_QUEUE; j++) { | |
831 | rx_page_desc[i].rx_page[j].dma = | |
832 | adapter->ring_dma + offset; | |
833 | rx_page_desc[i].rx_page[j].addr = | |
834 | adapter->ring_vir_addr + offset; | |
835 | offset += rx_ring->real_page_size; | |
836 | } | |
837 | } | |
838 | ||
839 | /* Init CMB dma address */ | |
840 | tx_ring->cmb_dma = adapter->ring_dma + offset; | |
841 | tx_ring->cmb = (u32 *)(adapter->ring_vir_addr + offset); | |
842 | offset += sizeof(u32); | |
843 | ||
844 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
845 | for (j = 0; j < AT_PAGE_NUM_PER_QUEUE; j++) { | |
846 | rx_page_desc[i].rx_page[j].write_offset_dma = | |
847 | adapter->ring_dma + offset; | |
848 | rx_page_desc[i].rx_page[j].write_offset_addr = | |
849 | adapter->ring_vir_addr + offset; | |
850 | offset += sizeof(u32); | |
851 | } | |
852 | } | |
853 | ||
854 | if (unlikely(offset > adapter->ring_size)) { | |
855 | dev_err(&pdev->dev, "offset(%d) > ring size(%d) !!\n", | |
856 | offset, adapter->ring_size); | |
857 | err = -1; | |
858 | goto failed; | |
859 | } | |
860 | ||
861 | return 0; | |
862 | failed: | |
863 | if (adapter->ring_vir_addr != NULL) { | |
864 | pci_free_consistent(pdev, adapter->ring_size, | |
865 | adapter->ring_vir_addr, adapter->ring_dma); | |
866 | adapter->ring_vir_addr = NULL; | |
867 | } | |
868 | return err; | |
869 | } | |
870 | ||
871 | static inline void atl1e_configure_des_ring(const struct atl1e_adapter *adapter) | |
872 | { | |
873 | ||
874 | struct atl1e_hw *hw = (struct atl1e_hw *)&adapter->hw; | |
875 | struct atl1e_rx_ring *rx_ring = | |
876 | (struct atl1e_rx_ring *)&adapter->rx_ring; | |
877 | struct atl1e_tx_ring *tx_ring = | |
878 | (struct atl1e_tx_ring *)&adapter->tx_ring; | |
879 | struct atl1e_rx_page_desc *rx_page_desc = NULL; | |
880 | int i, j; | |
881 | ||
882 | AT_WRITE_REG(hw, REG_DESC_BASE_ADDR_HI, | |
883 | (u32)((adapter->ring_dma & AT_DMA_HI_ADDR_MASK) >> 32)); | |
884 | AT_WRITE_REG(hw, REG_TPD_BASE_ADDR_LO, | |
885 | (u32)((tx_ring->dma) & AT_DMA_LO_ADDR_MASK)); | |
886 | AT_WRITE_REG(hw, REG_TPD_RING_SIZE, (u16)(tx_ring->count)); | |
887 | AT_WRITE_REG(hw, REG_HOST_TX_CMB_LO, | |
888 | (u32)((tx_ring->cmb_dma) & AT_DMA_LO_ADDR_MASK)); | |
889 | ||
890 | rx_page_desc = rx_ring->rx_page_desc; | |
891 | /* RXF Page Physical address / Page Length */ | |
892 | for (i = 0; i < AT_MAX_RECEIVE_QUEUE; i++) { | |
893 | AT_WRITE_REG(hw, atl1e_rx_page_hi_addr_regs[i], | |
894 | (u32)((adapter->ring_dma & | |
895 | AT_DMA_HI_ADDR_MASK) >> 32)); | |
896 | for (j = 0; j < AT_PAGE_NUM_PER_QUEUE; j++) { | |
897 | u32 page_phy_addr; | |
898 | u32 offset_phy_addr; | |
899 | ||
900 | page_phy_addr = rx_page_desc[i].rx_page[j].dma; | |
901 | offset_phy_addr = | |
902 | rx_page_desc[i].rx_page[j].write_offset_dma; | |
903 | ||
904 | AT_WRITE_REG(hw, atl1e_rx_page_lo_addr_regs[i][j], | |
905 | page_phy_addr & AT_DMA_LO_ADDR_MASK); | |
906 | AT_WRITE_REG(hw, atl1e_rx_page_write_offset_regs[i][j], | |
907 | offset_phy_addr & AT_DMA_LO_ADDR_MASK); | |
908 | AT_WRITE_REGB(hw, atl1e_rx_page_vld_regs[i][j], 1); | |
909 | } | |
910 | } | |
911 | /* Page Length */ | |
912 | AT_WRITE_REG(hw, REG_HOST_RXFPAGE_SIZE, rx_ring->page_size); | |
913 | /* Load all of base address above */ | |
914 | AT_WRITE_REG(hw, REG_LOAD_PTR, 1); | |
915 | ||
916 | return; | |
917 | } | |
918 | ||
919 | static inline void atl1e_configure_tx(struct atl1e_adapter *adapter) | |
920 | { | |
921 | struct atl1e_hw *hw = (struct atl1e_hw *)&adapter->hw; | |
922 | u32 dev_ctrl_data = 0; | |
923 | u32 max_pay_load = 0; | |
924 | u32 jumbo_thresh = 0; | |
925 | u32 extra_size = 0; /* Jumbo frame threshold in QWORD unit */ | |
926 | ||
927 | /* configure TXQ param */ | |
928 | if (hw->nic_type != athr_l2e_revB) { | |
929 | extra_size = ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN; | |
930 | if (hw->max_frame_size <= 1500) { | |
931 | jumbo_thresh = hw->max_frame_size + extra_size; | |
932 | } else if (hw->max_frame_size < 6*1024) { | |
933 | jumbo_thresh = | |
934 | (hw->max_frame_size + extra_size) * 2 / 3; | |
935 | } else { | |
936 | jumbo_thresh = (hw->max_frame_size + extra_size) / 2; | |
937 | } | |
938 | AT_WRITE_REG(hw, REG_TX_EARLY_TH, (jumbo_thresh + 7) >> 3); | |
939 | } | |
940 | ||
941 | dev_ctrl_data = AT_READ_REG(hw, REG_DEVICE_CTRL); | |
942 | ||
943 | max_pay_load = ((dev_ctrl_data >> DEVICE_CTRL_MAX_PAYLOAD_SHIFT)) & | |
944 | DEVICE_CTRL_MAX_PAYLOAD_MASK; | |
945 | ||
946 | hw->dmaw_block = min(max_pay_load, hw->dmaw_block); | |
947 | ||
948 | max_pay_load = ((dev_ctrl_data >> DEVICE_CTRL_MAX_RREQ_SZ_SHIFT)) & | |
949 | DEVICE_CTRL_MAX_RREQ_SZ_MASK; | |
950 | hw->dmar_block = min(max_pay_load, hw->dmar_block); | |
951 | ||
952 | if (hw->nic_type != athr_l2e_revB) | |
953 | AT_WRITE_REGW(hw, REG_TXQ_CTRL + 2, | |
954 | atl1e_pay_load_size[hw->dmar_block]); | |
955 | /* enable TXQ */ | |
956 | AT_WRITE_REGW(hw, REG_TXQ_CTRL, | |
957 | (((u16)hw->tpd_burst & TXQ_CTRL_NUM_TPD_BURST_MASK) | |
958 | << TXQ_CTRL_NUM_TPD_BURST_SHIFT) | |
959 | | TXQ_CTRL_ENH_MODE | TXQ_CTRL_EN); | |
960 | return; | |
961 | } | |
962 | ||
963 | static inline void atl1e_configure_rx(struct atl1e_adapter *adapter) | |
964 | { | |
965 | struct atl1e_hw *hw = (struct atl1e_hw *)&adapter->hw; | |
966 | u32 rxf_len = 0; | |
967 | u32 rxf_low = 0; | |
968 | u32 rxf_high = 0; | |
969 | u32 rxf_thresh_data = 0; | |
970 | u32 rxq_ctrl_data = 0; | |
971 | ||
972 | if (hw->nic_type != athr_l2e_revB) { | |
973 | AT_WRITE_REGW(hw, REG_RXQ_JMBOSZ_RRDTIM, | |
974 | (u16)((hw->rx_jumbo_th & RXQ_JMBOSZ_TH_MASK) << | |
975 | RXQ_JMBOSZ_TH_SHIFT | | |
976 | (1 & RXQ_JMBO_LKAH_MASK) << | |
977 | RXQ_JMBO_LKAH_SHIFT)); | |
978 | ||
979 | rxf_len = AT_READ_REG(hw, REG_SRAM_RXF_LEN); | |
980 | rxf_high = rxf_len * 4 / 5; | |
981 | rxf_low = rxf_len / 5; | |
982 | rxf_thresh_data = ((rxf_high & RXQ_RXF_PAUSE_TH_HI_MASK) | |
983 | << RXQ_RXF_PAUSE_TH_HI_SHIFT) | | |
984 | ((rxf_low & RXQ_RXF_PAUSE_TH_LO_MASK) | |
985 | << RXQ_RXF_PAUSE_TH_LO_SHIFT); | |
986 | ||
987 | AT_WRITE_REG(hw, REG_RXQ_RXF_PAUSE_THRESH, rxf_thresh_data); | |
988 | } | |
989 | ||
990 | /* RRS */ | |
991 | AT_WRITE_REG(hw, REG_IDT_TABLE, hw->indirect_tab); | |
992 | AT_WRITE_REG(hw, REG_BASE_CPU_NUMBER, hw->base_cpu); | |
993 | ||
994 | if (hw->rrs_type & atl1e_rrs_ipv4) | |
995 | rxq_ctrl_data |= RXQ_CTRL_HASH_TYPE_IPV4; | |
996 | ||
997 | if (hw->rrs_type & atl1e_rrs_ipv4_tcp) | |
998 | rxq_ctrl_data |= RXQ_CTRL_HASH_TYPE_IPV4_TCP; | |
999 | ||
1000 | if (hw->rrs_type & atl1e_rrs_ipv6) | |
1001 | rxq_ctrl_data |= RXQ_CTRL_HASH_TYPE_IPV6; | |
1002 | ||
1003 | if (hw->rrs_type & atl1e_rrs_ipv6_tcp) | |
1004 | rxq_ctrl_data |= RXQ_CTRL_HASH_TYPE_IPV6_TCP; | |
1005 | ||
1006 | if (hw->rrs_type != atl1e_rrs_disable) | |
1007 | rxq_ctrl_data |= | |
1008 | (RXQ_CTRL_HASH_ENABLE | RXQ_CTRL_RSS_MODE_MQUESINT); | |
1009 | ||
1010 | rxq_ctrl_data |= RXQ_CTRL_IPV6_XSUM_VERIFY_EN | RXQ_CTRL_PBA_ALIGN_32 | | |
1011 | RXQ_CTRL_CUT_THRU_EN | RXQ_CTRL_EN; | |
1012 | ||
1013 | AT_WRITE_REG(hw, REG_RXQ_CTRL, rxq_ctrl_data); | |
1014 | return; | |
1015 | } | |
1016 | ||
1017 | static inline void atl1e_configure_dma(struct atl1e_adapter *adapter) | |
1018 | { | |
1019 | struct atl1e_hw *hw = &adapter->hw; | |
1020 | u32 dma_ctrl_data = 0; | |
1021 | ||
1022 | dma_ctrl_data = DMA_CTRL_RXCMB_EN; | |
1023 | dma_ctrl_data |= (((u32)hw->dmar_block) & DMA_CTRL_DMAR_BURST_LEN_MASK) | |
1024 | << DMA_CTRL_DMAR_BURST_LEN_SHIFT; | |
1025 | dma_ctrl_data |= (((u32)hw->dmaw_block) & DMA_CTRL_DMAW_BURST_LEN_MASK) | |
1026 | << DMA_CTRL_DMAW_BURST_LEN_SHIFT; | |
1027 | dma_ctrl_data |= DMA_CTRL_DMAR_REQ_PRI | DMA_CTRL_DMAR_OUT_ORDER; | |
1028 | dma_ctrl_data |= (((u32)hw->dmar_dly_cnt) & DMA_CTRL_DMAR_DLY_CNT_MASK) | |
1029 | << DMA_CTRL_DMAR_DLY_CNT_SHIFT; | |
1030 | dma_ctrl_data |= (((u32)hw->dmaw_dly_cnt) & DMA_CTRL_DMAW_DLY_CNT_MASK) | |
1031 | << DMA_CTRL_DMAW_DLY_CNT_SHIFT; | |
1032 | ||
1033 | AT_WRITE_REG(hw, REG_DMA_CTRL, dma_ctrl_data); | |
1034 | return; | |
1035 | } | |
1036 | ||
e6ca2328 | 1037 | static void atl1e_setup_mac_ctrl(struct atl1e_adapter *adapter) |
a6a53252 JY |
1038 | { |
1039 | u32 value; | |
1040 | struct atl1e_hw *hw = &adapter->hw; | |
1041 | struct net_device *netdev = adapter->netdev; | |
1042 | ||
1043 | /* Config MAC CTRL Register */ | |
1044 | value = MAC_CTRL_TX_EN | | |
1045 | MAC_CTRL_RX_EN ; | |
1046 | ||
1047 | if (FULL_DUPLEX == adapter->link_duplex) | |
1048 | value |= MAC_CTRL_DUPLX; | |
1049 | ||
1050 | value |= ((u32)((SPEED_1000 == adapter->link_speed) ? | |
1051 | MAC_CTRL_SPEED_1000 : MAC_CTRL_SPEED_10_100) << | |
1052 | MAC_CTRL_SPEED_SHIFT); | |
1053 | value |= (MAC_CTRL_TX_FLOW | MAC_CTRL_RX_FLOW); | |
1054 | ||
1055 | value |= (MAC_CTRL_ADD_CRC | MAC_CTRL_PAD); | |
1056 | value |= (((u32)adapter->hw.preamble_len & | |
1057 | MAC_CTRL_PRMLEN_MASK) << MAC_CTRL_PRMLEN_SHIFT); | |
1058 | ||
1059 | if (adapter->vlgrp) | |
1060 | value |= MAC_CTRL_RMV_VLAN; | |
1061 | ||
1062 | value |= MAC_CTRL_BC_EN; | |
1063 | if (netdev->flags & IFF_PROMISC) | |
1064 | value |= MAC_CTRL_PROMIS_EN; | |
1065 | if (netdev->flags & IFF_ALLMULTI) | |
1066 | value |= MAC_CTRL_MC_ALL_EN; | |
1067 | ||
1068 | AT_WRITE_REG(hw, REG_MAC_CTRL, value); | |
1069 | } | |
1070 | ||
1071 | /* | |
1072 | * atl1e_configure - Configure Transmit&Receive Unit after Reset | |
1073 | * @adapter: board private structure | |
1074 | * | |
1075 | * Configure the Tx /Rx unit of the MAC after a reset. | |
1076 | */ | |
1077 | static int atl1e_configure(struct atl1e_adapter *adapter) | |
1078 | { | |
1079 | struct atl1e_hw *hw = &adapter->hw; | |
1080 | struct pci_dev *pdev = adapter->pdev; | |
1081 | ||
1082 | u32 intr_status_data = 0; | |
1083 | ||
1084 | /* clear interrupt status */ | |
1085 | AT_WRITE_REG(hw, REG_ISR, ~0); | |
1086 | ||
1087 | /* 1. set MAC Address */ | |
1088 | atl1e_hw_set_mac_addr(hw); | |
1089 | ||
1090 | /* 2. Init the Multicast HASH table done by set_muti */ | |
1091 | ||
1092 | /* 3. Clear any WOL status */ | |
1093 | AT_WRITE_REG(hw, REG_WOL_CTRL, 0); | |
1094 | ||
1095 | /* 4. Descripter Ring BaseMem/Length/Read ptr/Write ptr | |
1096 | * TPD Ring/SMB/RXF0 Page CMBs, they use the same | |
1097 | * High 32bits memory */ | |
1098 | atl1e_configure_des_ring(adapter); | |
1099 | ||
1100 | /* 5. set Interrupt Moderator Timer */ | |
1101 | AT_WRITE_REGW(hw, REG_IRQ_MODU_TIMER_INIT, hw->imt); | |
1102 | AT_WRITE_REGW(hw, REG_IRQ_MODU_TIMER2_INIT, hw->imt); | |
1103 | AT_WRITE_REG(hw, REG_MASTER_CTRL, MASTER_CTRL_LED_MODE | | |
1104 | MASTER_CTRL_ITIMER_EN | MASTER_CTRL_ITIMER2_EN); | |
1105 | ||
1106 | /* 6. rx/tx threshold to trig interrupt */ | |
1107 | AT_WRITE_REGW(hw, REG_TRIG_RRD_THRESH, hw->rrd_thresh); | |
1108 | AT_WRITE_REGW(hw, REG_TRIG_TPD_THRESH, hw->tpd_thresh); | |
1109 | AT_WRITE_REGW(hw, REG_TRIG_RXTIMER, hw->rx_count_down); | |
1110 | AT_WRITE_REGW(hw, REG_TRIG_TXTIMER, hw->tx_count_down); | |
1111 | ||
1112 | /* 7. set Interrupt Clear Timer */ | |
1113 | AT_WRITE_REGW(hw, REG_CMBDISDMA_TIMER, hw->ict); | |
1114 | ||
1115 | /* 8. set MTU */ | |
1116 | AT_WRITE_REG(hw, REG_MTU, hw->max_frame_size + ETH_HLEN + | |
1117 | VLAN_HLEN + ETH_FCS_LEN); | |
1118 | ||
1119 | /* 9. config TXQ early tx threshold */ | |
1120 | atl1e_configure_tx(adapter); | |
1121 | ||
1122 | /* 10. config RXQ */ | |
1123 | atl1e_configure_rx(adapter); | |
1124 | ||
1125 | /* 11. config DMA Engine */ | |
1126 | atl1e_configure_dma(adapter); | |
1127 | ||
1128 | /* 12. smb timer to trig interrupt */ | |
1129 | AT_WRITE_REG(hw, REG_SMB_STAT_TIMER, hw->smb_timer); | |
1130 | ||
1131 | intr_status_data = AT_READ_REG(hw, REG_ISR); | |
1132 | if (unlikely((intr_status_data & ISR_PHY_LINKDOWN) != 0)) { | |
1133 | dev_err(&pdev->dev, "atl1e_configure failed," | |
1134 | "PCIE phy link down\n"); | |
1135 | return -1; | |
1136 | } | |
1137 | ||
1138 | AT_WRITE_REG(hw, REG_ISR, 0x7fffffff); | |
1139 | return 0; | |
1140 | } | |
1141 | ||
1142 | /* | |
1143 | * atl1e_get_stats - Get System Network Statistics | |
1144 | * @netdev: network interface device structure | |
1145 | * | |
1146 | * Returns the address of the device statistics structure. | |
1147 | * The statistics are actually updated from the timer callback. | |
1148 | */ | |
1149 | static struct net_device_stats *atl1e_get_stats(struct net_device *netdev) | |
1150 | { | |
1151 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
1152 | struct atl1e_hw_stats *hw_stats = &adapter->hw_stats; | |
d3f65f7c | 1153 | struct net_device_stats *net_stats = &netdev->stats; |
a6a53252 JY |
1154 | |
1155 | net_stats->rx_packets = hw_stats->rx_ok; | |
1156 | net_stats->tx_packets = hw_stats->tx_ok; | |
1157 | net_stats->rx_bytes = hw_stats->rx_byte_cnt; | |
1158 | net_stats->tx_bytes = hw_stats->tx_byte_cnt; | |
1159 | net_stats->multicast = hw_stats->rx_mcast; | |
1160 | net_stats->collisions = hw_stats->tx_1_col + | |
1161 | hw_stats->tx_2_col * 2 + | |
1162 | hw_stats->tx_late_col + hw_stats->tx_abort_col; | |
1163 | ||
1164 | net_stats->rx_errors = hw_stats->rx_frag + hw_stats->rx_fcs_err + | |
1165 | hw_stats->rx_len_err + hw_stats->rx_sz_ov + | |
1166 | hw_stats->rx_rrd_ov + hw_stats->rx_align_err; | |
1167 | net_stats->rx_fifo_errors = hw_stats->rx_rxf_ov; | |
1168 | net_stats->rx_length_errors = hw_stats->rx_len_err; | |
1169 | net_stats->rx_crc_errors = hw_stats->rx_fcs_err; | |
1170 | net_stats->rx_frame_errors = hw_stats->rx_align_err; | |
1171 | net_stats->rx_over_errors = hw_stats->rx_rrd_ov + hw_stats->rx_rxf_ov; | |
1172 | ||
1173 | net_stats->rx_missed_errors = hw_stats->rx_rrd_ov + hw_stats->rx_rxf_ov; | |
1174 | ||
1175 | net_stats->tx_errors = hw_stats->tx_late_col + hw_stats->tx_abort_col + | |
1176 | hw_stats->tx_underrun + hw_stats->tx_trunc; | |
1177 | net_stats->tx_fifo_errors = hw_stats->tx_underrun; | |
1178 | net_stats->tx_aborted_errors = hw_stats->tx_abort_col; | |
1179 | net_stats->tx_window_errors = hw_stats->tx_late_col; | |
1180 | ||
d3f65f7c | 1181 | return net_stats; |
a6a53252 JY |
1182 | } |
1183 | ||
1184 | static void atl1e_update_hw_stats(struct atl1e_adapter *adapter) | |
1185 | { | |
1186 | u16 hw_reg_addr = 0; | |
1187 | unsigned long *stats_item = NULL; | |
1188 | ||
1189 | /* update rx status */ | |
1190 | hw_reg_addr = REG_MAC_RX_STATUS_BIN; | |
1191 | stats_item = &adapter->hw_stats.rx_ok; | |
1192 | while (hw_reg_addr <= REG_MAC_RX_STATUS_END) { | |
1193 | *stats_item += AT_READ_REG(&adapter->hw, hw_reg_addr); | |
1194 | stats_item++; | |
1195 | hw_reg_addr += 4; | |
1196 | } | |
1197 | /* update tx status */ | |
1198 | hw_reg_addr = REG_MAC_TX_STATUS_BIN; | |
1199 | stats_item = &adapter->hw_stats.tx_ok; | |
1200 | while (hw_reg_addr <= REG_MAC_TX_STATUS_END) { | |
1201 | *stats_item += AT_READ_REG(&adapter->hw, hw_reg_addr); | |
1202 | stats_item++; | |
1203 | hw_reg_addr += 4; | |
1204 | } | |
1205 | } | |
1206 | ||
1207 | static inline void atl1e_clear_phy_int(struct atl1e_adapter *adapter) | |
1208 | { | |
1209 | u16 phy_data; | |
1210 | ||
1211 | spin_lock(&adapter->mdio_lock); | |
1212 | atl1e_read_phy_reg(&adapter->hw, MII_INT_STATUS, &phy_data); | |
1213 | spin_unlock(&adapter->mdio_lock); | |
1214 | } | |
1215 | ||
1216 | static bool atl1e_clean_tx_irq(struct atl1e_adapter *adapter) | |
1217 | { | |
1218 | struct atl1e_tx_ring *tx_ring = (struct atl1e_tx_ring *) | |
1219 | &adapter->tx_ring; | |
1220 | struct atl1e_tx_buffer *tx_buffer = NULL; | |
1221 | u16 hw_next_to_clean = AT_READ_REGW(&adapter->hw, REG_TPD_CONS_IDX); | |
1222 | u16 next_to_clean = atomic_read(&tx_ring->next_to_clean); | |
1223 | ||
1224 | while (next_to_clean != hw_next_to_clean) { | |
1225 | tx_buffer = &tx_ring->tx_buffer[next_to_clean]; | |
1226 | if (tx_buffer->dma) { | |
03f18991 JY |
1227 | if (tx_buffer->flags & ATL1E_TX_PCIMAP_SINGLE) |
1228 | pci_unmap_single(adapter->pdev, tx_buffer->dma, | |
1229 | tx_buffer->length, PCI_DMA_TODEVICE); | |
1230 | else if (tx_buffer->flags & ATL1E_TX_PCIMAP_PAGE) | |
1231 | pci_unmap_page(adapter->pdev, tx_buffer->dma, | |
a6a53252 JY |
1232 | tx_buffer->length, PCI_DMA_TODEVICE); |
1233 | tx_buffer->dma = 0; | |
1234 | } | |
1235 | ||
1236 | if (tx_buffer->skb) { | |
1237 | dev_kfree_skb_irq(tx_buffer->skb); | |
1238 | tx_buffer->skb = NULL; | |
1239 | } | |
1240 | ||
1241 | if (++next_to_clean == tx_ring->count) | |
1242 | next_to_clean = 0; | |
1243 | } | |
1244 | ||
1245 | atomic_set(&tx_ring->next_to_clean, next_to_clean); | |
1246 | ||
1247 | if (netif_queue_stopped(adapter->netdev) && | |
1248 | netif_carrier_ok(adapter->netdev)) { | |
1249 | netif_wake_queue(adapter->netdev); | |
1250 | } | |
1251 | ||
1252 | return true; | |
1253 | } | |
1254 | ||
1255 | /* | |
1256 | * atl1e_intr - Interrupt Handler | |
1257 | * @irq: interrupt number | |
1258 | * @data: pointer to a network interface device structure | |
1259 | * @pt_regs: CPU registers structure | |
1260 | */ | |
1261 | static irqreturn_t atl1e_intr(int irq, void *data) | |
1262 | { | |
1263 | struct net_device *netdev = data; | |
1264 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
1265 | struct pci_dev *pdev = adapter->pdev; | |
1266 | struct atl1e_hw *hw = &adapter->hw; | |
1267 | int max_ints = AT_MAX_INT_WORK; | |
1268 | int handled = IRQ_NONE; | |
1269 | u32 status; | |
1270 | ||
1271 | do { | |
1272 | status = AT_READ_REG(hw, REG_ISR); | |
1273 | if ((status & IMR_NORMAL_MASK) == 0 || | |
1274 | (status & ISR_DIS_INT) != 0) { | |
1275 | if (max_ints != AT_MAX_INT_WORK) | |
1276 | handled = IRQ_HANDLED; | |
1277 | break; | |
1278 | } | |
1279 | /* link event */ | |
1280 | if (status & ISR_GPHY) | |
1281 | atl1e_clear_phy_int(adapter); | |
1282 | /* Ack ISR */ | |
1283 | AT_WRITE_REG(hw, REG_ISR, status | ISR_DIS_INT); | |
1284 | ||
1285 | handled = IRQ_HANDLED; | |
1286 | /* check if PCIE PHY Link down */ | |
1287 | if (status & ISR_PHY_LINKDOWN) { | |
1288 | dev_err(&pdev->dev, | |
1289 | "pcie phy linkdown %x\n", status); | |
1290 | if (netif_running(adapter->netdev)) { | |
1291 | /* reset MAC */ | |
1292 | atl1e_irq_reset(adapter); | |
1293 | schedule_work(&adapter->reset_task); | |
1294 | break; | |
1295 | } | |
1296 | } | |
1297 | ||
1298 | /* check if DMA read/write error */ | |
1299 | if (status & (ISR_DMAR_TO_RST | ISR_DMAW_TO_RST)) { | |
1300 | dev_err(&pdev->dev, | |
1301 | "PCIE DMA RW error (status = 0x%x)\n", | |
1302 | status); | |
1303 | atl1e_irq_reset(adapter); | |
1304 | schedule_work(&adapter->reset_task); | |
1305 | break; | |
1306 | } | |
1307 | ||
1308 | if (status & ISR_SMB) | |
1309 | atl1e_update_hw_stats(adapter); | |
1310 | ||
1311 | /* link event */ | |
1312 | if (status & (ISR_GPHY | ISR_MANUAL)) { | |
d3f65f7c | 1313 | netdev->stats.tx_carrier_errors++; |
a6a53252 JY |
1314 | atl1e_link_chg_event(adapter); |
1315 | break; | |
1316 | } | |
1317 | ||
1318 | /* transmit event */ | |
1319 | if (status & ISR_TX_EVENT) | |
1320 | atl1e_clean_tx_irq(adapter); | |
1321 | ||
1322 | if (status & ISR_RX_EVENT) { | |
1323 | /* | |
1324 | * disable rx interrupts, without | |
1325 | * the synchronize_irq bit | |
1326 | */ | |
1327 | AT_WRITE_REG(hw, REG_IMR, | |
1328 | IMR_NORMAL_MASK & ~ISR_RX_EVENT); | |
1329 | AT_WRITE_FLUSH(hw); | |
288379f0 | 1330 | if (likely(napi_schedule_prep( |
a6a53252 | 1331 | &adapter->napi))) |
288379f0 | 1332 | __napi_schedule(&adapter->napi); |
a6a53252 JY |
1333 | } |
1334 | } while (--max_ints > 0); | |
1335 | /* re-enable Interrupt*/ | |
1336 | AT_WRITE_REG(&adapter->hw, REG_ISR, 0); | |
1337 | ||
1338 | return handled; | |
1339 | } | |
1340 | ||
1341 | static inline void atl1e_rx_checksum(struct atl1e_adapter *adapter, | |
1342 | struct sk_buff *skb, struct atl1e_recv_ret_status *prrs) | |
1343 | { | |
1344 | u8 *packet = (u8 *)(prrs + 1); | |
1345 | struct iphdr *iph; | |
1346 | u16 head_len = ETH_HLEN; | |
1347 | u16 pkt_flags; | |
1348 | u16 err_flags; | |
1349 | ||
1350 | skb->ip_summed = CHECKSUM_NONE; | |
1351 | pkt_flags = prrs->pkt_flag; | |
1352 | err_flags = prrs->err_flag; | |
1353 | if (((pkt_flags & RRS_IS_IPV4) || (pkt_flags & RRS_IS_IPV6)) && | |
1354 | ((pkt_flags & RRS_IS_TCP) || (pkt_flags & RRS_IS_UDP))) { | |
1355 | if (pkt_flags & RRS_IS_IPV4) { | |
1356 | if (pkt_flags & RRS_IS_802_3) | |
1357 | head_len += 8; | |
1358 | iph = (struct iphdr *) (packet + head_len); | |
1359 | if (iph->frag_off != 0 && !(pkt_flags & RRS_IS_IP_DF)) | |
1360 | goto hw_xsum; | |
1361 | } | |
1362 | if (!(err_flags & (RRS_ERR_IP_CSUM | RRS_ERR_L4_CSUM))) { | |
1363 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
1364 | return; | |
1365 | } | |
1366 | } | |
1367 | ||
1368 | hw_xsum : | |
1369 | return; | |
1370 | } | |
1371 | ||
1372 | static struct atl1e_rx_page *atl1e_get_rx_page(struct atl1e_adapter *adapter, | |
1373 | u8 que) | |
1374 | { | |
1375 | struct atl1e_rx_page_desc *rx_page_desc = | |
1376 | (struct atl1e_rx_page_desc *) adapter->rx_ring.rx_page_desc; | |
1377 | u8 rx_using = rx_page_desc[que].rx_using; | |
1378 | ||
1379 | return (struct atl1e_rx_page *)&(rx_page_desc[que].rx_page[rx_using]); | |
1380 | } | |
1381 | ||
1382 | static void atl1e_clean_rx_irq(struct atl1e_adapter *adapter, u8 que, | |
1383 | int *work_done, int work_to_do) | |
1384 | { | |
1385 | struct pci_dev *pdev = adapter->pdev; | |
1386 | struct net_device *netdev = adapter->netdev; | |
1387 | struct atl1e_rx_ring *rx_ring = (struct atl1e_rx_ring *) | |
1388 | &adapter->rx_ring; | |
1389 | struct atl1e_rx_page_desc *rx_page_desc = | |
1390 | (struct atl1e_rx_page_desc *) rx_ring->rx_page_desc; | |
1391 | struct sk_buff *skb = NULL; | |
1392 | struct atl1e_rx_page *rx_page = atl1e_get_rx_page(adapter, que); | |
1393 | u32 packet_size, write_offset; | |
1394 | struct atl1e_recv_ret_status *prrs; | |
1395 | ||
1396 | write_offset = *(rx_page->write_offset_addr); | |
1397 | if (likely(rx_page->read_offset < write_offset)) { | |
1398 | do { | |
1399 | if (*work_done >= work_to_do) | |
1400 | break; | |
1401 | (*work_done)++; | |
1402 | /* get new packet's rrs */ | |
1403 | prrs = (struct atl1e_recv_ret_status *) (rx_page->addr + | |
1404 | rx_page->read_offset); | |
1405 | /* check sequence number */ | |
1406 | if (prrs->seq_num != rx_page_desc[que].rx_nxseq) { | |
1407 | dev_err(&pdev->dev, | |
1408 | "rx sequence number" | |
1409 | " error (rx=%d) (expect=%d)\n", | |
1410 | prrs->seq_num, | |
1411 | rx_page_desc[que].rx_nxseq); | |
1412 | rx_page_desc[que].rx_nxseq++; | |
1413 | /* just for debug use */ | |
1414 | AT_WRITE_REG(&adapter->hw, REG_DEBUG_DATA0, | |
1415 | (((u32)prrs->seq_num) << 16) | | |
1416 | rx_page_desc[que].rx_nxseq); | |
1417 | goto fatal_err; | |
1418 | } | |
1419 | rx_page_desc[que].rx_nxseq++; | |
1420 | ||
1421 | /* error packet */ | |
1422 | if (prrs->pkt_flag & RRS_IS_ERR_FRAME) { | |
1423 | if (prrs->err_flag & (RRS_ERR_BAD_CRC | | |
1424 | RRS_ERR_DRIBBLE | RRS_ERR_CODE | | |
1425 | RRS_ERR_TRUNC)) { | |
1426 | /* hardware error, discard this packet*/ | |
1427 | dev_err(&pdev->dev, | |
1428 | "rx packet desc error %x\n", | |
1429 | *((u32 *)prrs + 1)); | |
1430 | goto skip_pkt; | |
1431 | } | |
1432 | } | |
1433 | ||
1434 | packet_size = ((prrs->word1 >> RRS_PKT_SIZE_SHIFT) & | |
1435 | RRS_PKT_SIZE_MASK) - 4; /* CRC */ | |
89d71a66 | 1436 | skb = netdev_alloc_skb_ip_align(netdev, packet_size); |
a6a53252 JY |
1437 | if (skb == NULL) { |
1438 | dev_warn(&pdev->dev, "%s: Memory squeeze," | |
1439 | "deferring packet.\n", netdev->name); | |
1440 | goto skip_pkt; | |
1441 | } | |
a6a53252 JY |
1442 | skb->dev = netdev; |
1443 | memcpy(skb->data, (u8 *)(prrs + 1), packet_size); | |
1444 | skb_put(skb, packet_size); | |
1445 | skb->protocol = eth_type_trans(skb, netdev); | |
1446 | atl1e_rx_checksum(adapter, skb, prrs); | |
1447 | ||
1448 | if (unlikely(adapter->vlgrp && | |
1449 | (prrs->pkt_flag & RRS_IS_VLAN_TAG))) { | |
1450 | u16 vlan_tag = (prrs->vtag >> 4) | | |
1451 | ((prrs->vtag & 7) << 13) | | |
1452 | ((prrs->vtag & 8) << 9); | |
1453 | dev_dbg(&pdev->dev, | |
1454 | "RXD VLAN TAG<RRD>=0x%04x\n", | |
1455 | prrs->vtag); | |
1456 | vlan_hwaccel_receive_skb(skb, adapter->vlgrp, | |
1457 | vlan_tag); | |
1458 | } else { | |
1459 | netif_receive_skb(skb); | |
1460 | } | |
1461 | ||
a6a53252 JY |
1462 | skip_pkt: |
1463 | /* skip current packet whether it's ok or not. */ | |
1464 | rx_page->read_offset += | |
1465 | (((u32)((prrs->word1 >> RRS_PKT_SIZE_SHIFT) & | |
1466 | RRS_PKT_SIZE_MASK) + | |
1467 | sizeof(struct atl1e_recv_ret_status) + 31) & | |
1468 | 0xFFFFFFE0); | |
1469 | ||
1470 | if (rx_page->read_offset >= rx_ring->page_size) { | |
1471 | /* mark this page clean */ | |
1472 | u16 reg_addr; | |
1473 | u8 rx_using; | |
1474 | ||
1475 | rx_page->read_offset = | |
1476 | *(rx_page->write_offset_addr) = 0; | |
1477 | rx_using = rx_page_desc[que].rx_using; | |
1478 | reg_addr = | |
1479 | atl1e_rx_page_vld_regs[que][rx_using]; | |
1480 | AT_WRITE_REGB(&adapter->hw, reg_addr, 1); | |
1481 | rx_page_desc[que].rx_using ^= 1; | |
1482 | rx_page = atl1e_get_rx_page(adapter, que); | |
1483 | } | |
1484 | write_offset = *(rx_page->write_offset_addr); | |
1485 | } while (rx_page->read_offset < write_offset); | |
1486 | } | |
1487 | ||
1488 | return; | |
1489 | ||
1490 | fatal_err: | |
1491 | if (!test_bit(__AT_DOWN, &adapter->flags)) | |
1492 | schedule_work(&adapter->reset_task); | |
1493 | } | |
1494 | ||
1495 | /* | |
1496 | * atl1e_clean - NAPI Rx polling callback | |
1497 | * @adapter: board private structure | |
1498 | */ | |
1499 | static int atl1e_clean(struct napi_struct *napi, int budget) | |
1500 | { | |
1501 | struct atl1e_adapter *adapter = | |
1502 | container_of(napi, struct atl1e_adapter, napi); | |
a6a53252 JY |
1503 | struct pci_dev *pdev = adapter->pdev; |
1504 | u32 imr_data; | |
1505 | int work_done = 0; | |
1506 | ||
1507 | /* Keep link state information with original netdev */ | |
1508 | if (!netif_carrier_ok(adapter->netdev)) | |
1509 | goto quit_polling; | |
1510 | ||
1511 | atl1e_clean_rx_irq(adapter, 0, &work_done, budget); | |
1512 | ||
1513 | /* If no Tx and not enough Rx work done, exit the polling mode */ | |
1514 | if (work_done < budget) { | |
1515 | quit_polling: | |
288379f0 | 1516 | napi_complete(napi); |
a6a53252 JY |
1517 | imr_data = AT_READ_REG(&adapter->hw, REG_IMR); |
1518 | AT_WRITE_REG(&adapter->hw, REG_IMR, imr_data | ISR_RX_EVENT); | |
1519 | /* test debug */ | |
1520 | if (test_bit(__AT_DOWN, &adapter->flags)) { | |
1521 | atomic_dec(&adapter->irq_sem); | |
1522 | dev_err(&pdev->dev, | |
1523 | "atl1e_clean is called when AT_DOWN\n"); | |
1524 | } | |
1525 | /* reenable RX intr */ | |
1526 | /*atl1e_irq_enable(adapter); */ | |
1527 | ||
1528 | } | |
1529 | return work_done; | |
1530 | } | |
1531 | ||
1532 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
1533 | ||
1534 | /* | |
1535 | * Polling 'interrupt' - used by things like netconsole to send skbs | |
1536 | * without having to re-enable interrupts. It's not called while | |
1537 | * the interrupt routine is executing. | |
1538 | */ | |
1539 | static void atl1e_netpoll(struct net_device *netdev) | |
1540 | { | |
1541 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
1542 | ||
1543 | disable_irq(adapter->pdev->irq); | |
1544 | atl1e_intr(adapter->pdev->irq, netdev); | |
1545 | enable_irq(adapter->pdev->irq); | |
1546 | } | |
1547 | #endif | |
1548 | ||
1549 | static inline u16 atl1e_tpd_avail(struct atl1e_adapter *adapter) | |
1550 | { | |
1551 | struct atl1e_tx_ring *tx_ring = &adapter->tx_ring; | |
1552 | u16 next_to_use = 0; | |
1553 | u16 next_to_clean = 0; | |
1554 | ||
1555 | next_to_clean = atomic_read(&tx_ring->next_to_clean); | |
1556 | next_to_use = tx_ring->next_to_use; | |
1557 | ||
1558 | return (u16)(next_to_clean > next_to_use) ? | |
1559 | (next_to_clean - next_to_use - 1) : | |
1560 | (tx_ring->count + next_to_clean - next_to_use - 1); | |
1561 | } | |
1562 | ||
1563 | /* | |
1564 | * get next usable tpd | |
1565 | * Note: should call atl1e_tdp_avail to make sure | |
1566 | * there is enough tpd to use | |
1567 | */ | |
1568 | static struct atl1e_tpd_desc *atl1e_get_tpd(struct atl1e_adapter *adapter) | |
1569 | { | |
1570 | struct atl1e_tx_ring *tx_ring = &adapter->tx_ring; | |
1571 | u16 next_to_use = 0; | |
1572 | ||
1573 | next_to_use = tx_ring->next_to_use; | |
1574 | if (++tx_ring->next_to_use == tx_ring->count) | |
1575 | tx_ring->next_to_use = 0; | |
1576 | ||
1577 | memset(&tx_ring->desc[next_to_use], 0, sizeof(struct atl1e_tpd_desc)); | |
1578 | return (struct atl1e_tpd_desc *)&tx_ring->desc[next_to_use]; | |
1579 | } | |
1580 | ||
1581 | static struct atl1e_tx_buffer * | |
1582 | atl1e_get_tx_buffer(struct atl1e_adapter *adapter, struct atl1e_tpd_desc *tpd) | |
1583 | { | |
1584 | struct atl1e_tx_ring *tx_ring = &adapter->tx_ring; | |
1585 | ||
1586 | return &tx_ring->tx_buffer[tpd - tx_ring->desc]; | |
1587 | } | |
1588 | ||
1589 | /* Calculate the transmit packet descript needed*/ | |
1590 | static u16 atl1e_cal_tdp_req(const struct sk_buff *skb) | |
1591 | { | |
1592 | int i = 0; | |
1593 | u16 tpd_req = 1; | |
1594 | u16 fg_size = 0; | |
1595 | u16 proto_hdr_len = 0; | |
1596 | ||
1597 | for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { | |
1598 | fg_size = skb_shinfo(skb)->frags[i].size; | |
1599 | tpd_req += ((fg_size + MAX_TX_BUF_LEN - 1) >> MAX_TX_BUF_SHIFT); | |
1600 | } | |
1601 | ||
1602 | if (skb_is_gso(skb)) { | |
17d0cdfa | 1603 | if (skb->protocol == htons(ETH_P_IP) || |
a6a53252 JY |
1604 | (skb_shinfo(skb)->gso_type == SKB_GSO_TCPV6)) { |
1605 | proto_hdr_len = skb_transport_offset(skb) + | |
1606 | tcp_hdrlen(skb); | |
1607 | if (proto_hdr_len < skb_headlen(skb)) { | |
1608 | tpd_req += ((skb_headlen(skb) - proto_hdr_len + | |
1609 | MAX_TX_BUF_LEN - 1) >> | |
1610 | MAX_TX_BUF_SHIFT); | |
1611 | } | |
1612 | } | |
1613 | ||
1614 | } | |
1615 | return tpd_req; | |
1616 | } | |
1617 | ||
1618 | static int atl1e_tso_csum(struct atl1e_adapter *adapter, | |
1619 | struct sk_buff *skb, struct atl1e_tpd_desc *tpd) | |
1620 | { | |
1621 | struct pci_dev *pdev = adapter->pdev; | |
1622 | u8 hdr_len; | |
1623 | u32 real_len; | |
1624 | unsigned short offload_type; | |
1625 | int err; | |
1626 | ||
1627 | if (skb_is_gso(skb)) { | |
1628 | if (skb_header_cloned(skb)) { | |
1629 | err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); | |
1630 | if (unlikely(err)) | |
1631 | return -1; | |
1632 | } | |
1633 | offload_type = skb_shinfo(skb)->gso_type; | |
1634 | ||
1635 | if (offload_type & SKB_GSO_TCPV4) { | |
1636 | real_len = (((unsigned char *)ip_hdr(skb) - skb->data) | |
1637 | + ntohs(ip_hdr(skb)->tot_len)); | |
1638 | ||
1639 | if (real_len < skb->len) | |
1640 | pskb_trim(skb, real_len); | |
1641 | ||
1642 | hdr_len = (skb_transport_offset(skb) + tcp_hdrlen(skb)); | |
1643 | if (unlikely(skb->len == hdr_len)) { | |
1644 | /* only xsum need */ | |
1645 | dev_warn(&pdev->dev, | |
1646 | "IPV4 tso with zero data??\n"); | |
1647 | goto check_sum; | |
1648 | } else { | |
1649 | ip_hdr(skb)->check = 0; | |
1650 | ip_hdr(skb)->tot_len = 0; | |
1651 | tcp_hdr(skb)->check = ~csum_tcpudp_magic( | |
1652 | ip_hdr(skb)->saddr, | |
1653 | ip_hdr(skb)->daddr, | |
1654 | 0, IPPROTO_TCP, 0); | |
1655 | tpd->word3 |= (ip_hdr(skb)->ihl & | |
1656 | TDP_V4_IPHL_MASK) << | |
1657 | TPD_V4_IPHL_SHIFT; | |
1658 | tpd->word3 |= ((tcp_hdrlen(skb) >> 2) & | |
1659 | TPD_TCPHDRLEN_MASK) << | |
1660 | TPD_TCPHDRLEN_SHIFT; | |
1661 | tpd->word3 |= ((skb_shinfo(skb)->gso_size) & | |
1662 | TPD_MSS_MASK) << TPD_MSS_SHIFT; | |
1663 | tpd->word3 |= 1 << TPD_SEGMENT_EN_SHIFT; | |
1664 | } | |
1665 | return 0; | |
1666 | } | |
a6a53252 JY |
1667 | } |
1668 | ||
1669 | check_sum: | |
1670 | if (likely(skb->ip_summed == CHECKSUM_PARTIAL)) { | |
1671 | u8 css, cso; | |
1672 | ||
1673 | cso = skb_transport_offset(skb); | |
1674 | if (unlikely(cso & 0x1)) { | |
1675 | dev_err(&adapter->pdev->dev, | |
1676 | "pay load offset should not ant event number\n"); | |
1677 | return -1; | |
1678 | } else { | |
1679 | css = cso + skb->csum_offset; | |
1680 | tpd->word3 |= (cso & TPD_PLOADOFFSET_MASK) << | |
1681 | TPD_PLOADOFFSET_SHIFT; | |
1682 | tpd->word3 |= (css & TPD_CCSUMOFFSET_MASK) << | |
1683 | TPD_CCSUMOFFSET_SHIFT; | |
1684 | tpd->word3 |= 1 << TPD_CC_SEGMENT_EN_SHIFT; | |
1685 | } | |
1686 | } | |
1687 | ||
1688 | return 0; | |
1689 | } | |
1690 | ||
1691 | static void atl1e_tx_map(struct atl1e_adapter *adapter, | |
1692 | struct sk_buff *skb, struct atl1e_tpd_desc *tpd) | |
1693 | { | |
1694 | struct atl1e_tpd_desc *use_tpd = NULL; | |
1695 | struct atl1e_tx_buffer *tx_buffer = NULL; | |
1696 | u16 buf_len = skb->len - skb->data_len; | |
1697 | u16 map_len = 0; | |
1698 | u16 mapped_len = 0; | |
1699 | u16 hdr_len = 0; | |
1700 | u16 nr_frags; | |
1701 | u16 f; | |
1702 | int segment; | |
1703 | ||
1704 | nr_frags = skb_shinfo(skb)->nr_frags; | |
1705 | segment = (tpd->word3 >> TPD_SEGMENT_EN_SHIFT) & TPD_SEGMENT_EN_MASK; | |
1706 | if (segment) { | |
1707 | /* TSO */ | |
1708 | map_len = hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); | |
1709 | use_tpd = tpd; | |
1710 | ||
1711 | tx_buffer = atl1e_get_tx_buffer(adapter, use_tpd); | |
1712 | tx_buffer->length = map_len; | |
1713 | tx_buffer->dma = pci_map_single(adapter->pdev, | |
1714 | skb->data, hdr_len, PCI_DMA_TODEVICE); | |
03f18991 | 1715 | ATL1E_SET_PCIMAP_TYPE(tx_buffer, ATL1E_TX_PCIMAP_SINGLE); |
a6a53252 JY |
1716 | mapped_len += map_len; |
1717 | use_tpd->buffer_addr = cpu_to_le64(tx_buffer->dma); | |
1718 | use_tpd->word2 = (use_tpd->word2 & (~TPD_BUFLEN_MASK)) | | |
1719 | ((cpu_to_le32(tx_buffer->length) & | |
1720 | TPD_BUFLEN_MASK) << TPD_BUFLEN_SHIFT); | |
1721 | } | |
1722 | ||
1723 | while (mapped_len < buf_len) { | |
1724 | /* mapped_len == 0, means we should use the first tpd, | |
1725 | which is given by caller */ | |
1726 | if (mapped_len == 0) { | |
1727 | use_tpd = tpd; | |
1728 | } else { | |
1729 | use_tpd = atl1e_get_tpd(adapter); | |
1730 | memcpy(use_tpd, tpd, sizeof(struct atl1e_tpd_desc)); | |
1731 | } | |
1732 | tx_buffer = atl1e_get_tx_buffer(adapter, use_tpd); | |
1733 | tx_buffer->skb = NULL; | |
1734 | ||
1735 | tx_buffer->length = map_len = | |
1736 | ((buf_len - mapped_len) >= MAX_TX_BUF_LEN) ? | |
1737 | MAX_TX_BUF_LEN : (buf_len - mapped_len); | |
1738 | tx_buffer->dma = | |
1739 | pci_map_single(adapter->pdev, skb->data + mapped_len, | |
1740 | map_len, PCI_DMA_TODEVICE); | |
03f18991 | 1741 | ATL1E_SET_PCIMAP_TYPE(tx_buffer, ATL1E_TX_PCIMAP_SINGLE); |
a6a53252 JY |
1742 | mapped_len += map_len; |
1743 | use_tpd->buffer_addr = cpu_to_le64(tx_buffer->dma); | |
1744 | use_tpd->word2 = (use_tpd->word2 & (~TPD_BUFLEN_MASK)) | | |
1745 | ((cpu_to_le32(tx_buffer->length) & | |
1746 | TPD_BUFLEN_MASK) << TPD_BUFLEN_SHIFT); | |
1747 | } | |
1748 | ||
1749 | for (f = 0; f < nr_frags; f++) { | |
1750 | struct skb_frag_struct *frag; | |
1751 | u16 i; | |
1752 | u16 seg_num; | |
1753 | ||
1754 | frag = &skb_shinfo(skb)->frags[f]; | |
1755 | buf_len = frag->size; | |
1756 | ||
1757 | seg_num = (buf_len + MAX_TX_BUF_LEN - 1) / MAX_TX_BUF_LEN; | |
1758 | for (i = 0; i < seg_num; i++) { | |
1759 | use_tpd = atl1e_get_tpd(adapter); | |
1760 | memcpy(use_tpd, tpd, sizeof(struct atl1e_tpd_desc)); | |
1761 | ||
1762 | tx_buffer = atl1e_get_tx_buffer(adapter, use_tpd); | |
0ee904c3 | 1763 | BUG_ON(tx_buffer->skb); |
a6a53252 JY |
1764 | |
1765 | tx_buffer->skb = NULL; | |
1766 | tx_buffer->length = | |
1767 | (buf_len > MAX_TX_BUF_LEN) ? | |
1768 | MAX_TX_BUF_LEN : buf_len; | |
1769 | buf_len -= tx_buffer->length; | |
1770 | ||
1771 | tx_buffer->dma = | |
1772 | pci_map_page(adapter->pdev, frag->page, | |
1773 | frag->page_offset + | |
1774 | (i * MAX_TX_BUF_LEN), | |
1775 | tx_buffer->length, | |
1776 | PCI_DMA_TODEVICE); | |
03f18991 | 1777 | ATL1E_SET_PCIMAP_TYPE(tx_buffer, ATL1E_TX_PCIMAP_PAGE); |
a6a53252 JY |
1778 | use_tpd->buffer_addr = cpu_to_le64(tx_buffer->dma); |
1779 | use_tpd->word2 = (use_tpd->word2 & (~TPD_BUFLEN_MASK)) | | |
1780 | ((cpu_to_le32(tx_buffer->length) & | |
1781 | TPD_BUFLEN_MASK) << TPD_BUFLEN_SHIFT); | |
1782 | } | |
1783 | } | |
1784 | ||
1785 | if ((tpd->word3 >> TPD_SEGMENT_EN_SHIFT) & TPD_SEGMENT_EN_MASK) | |
1786 | /* note this one is a tcp header */ | |
1787 | tpd->word3 |= 1 << TPD_HDRFLAG_SHIFT; | |
1788 | /* The last tpd */ | |
1789 | ||
1790 | use_tpd->word3 |= 1 << TPD_EOP_SHIFT; | |
1791 | /* The last buffer info contain the skb address, | |
1792 | so it will be free after unmap */ | |
1793 | tx_buffer->skb = skb; | |
1794 | } | |
1795 | ||
1796 | static void atl1e_tx_queue(struct atl1e_adapter *adapter, u16 count, | |
1797 | struct atl1e_tpd_desc *tpd) | |
1798 | { | |
1799 | struct atl1e_tx_ring *tx_ring = &adapter->tx_ring; | |
1800 | /* Force memory writes to complete before letting h/w | |
1801 | * know there are new descriptors to fetch. (Only | |
1802 | * applicable for weak-ordered memory model archs, | |
1803 | * such as IA-64). */ | |
1804 | wmb(); | |
1805 | AT_WRITE_REG(&adapter->hw, REG_MB_TPD_PROD_IDX, tx_ring->next_to_use); | |
1806 | } | |
1807 | ||
61357325 SH |
1808 | static netdev_tx_t atl1e_xmit_frame(struct sk_buff *skb, |
1809 | struct net_device *netdev) | |
a6a53252 JY |
1810 | { |
1811 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
1812 | unsigned long flags; | |
1813 | u16 tpd_req = 1; | |
1814 | struct atl1e_tpd_desc *tpd; | |
1815 | ||
1816 | if (test_bit(__AT_DOWN, &adapter->flags)) { | |
1817 | dev_kfree_skb_any(skb); | |
1818 | return NETDEV_TX_OK; | |
1819 | } | |
1820 | ||
1821 | if (unlikely(skb->len <= 0)) { | |
1822 | dev_kfree_skb_any(skb); | |
1823 | return NETDEV_TX_OK; | |
1824 | } | |
1825 | tpd_req = atl1e_cal_tdp_req(skb); | |
1826 | if (!spin_trylock_irqsave(&adapter->tx_lock, flags)) | |
1827 | return NETDEV_TX_LOCKED; | |
1828 | ||
1829 | if (atl1e_tpd_avail(adapter) < tpd_req) { | |
1830 | /* no enough descriptor, just stop queue */ | |
1831 | netif_stop_queue(netdev); | |
1832 | spin_unlock_irqrestore(&adapter->tx_lock, flags); | |
1833 | return NETDEV_TX_BUSY; | |
1834 | } | |
1835 | ||
1836 | tpd = atl1e_get_tpd(adapter); | |
1837 | ||
1838 | if (unlikely(adapter->vlgrp && vlan_tx_tag_present(skb))) { | |
1839 | u16 vlan_tag = vlan_tx_tag_get(skb); | |
1840 | u16 atl1e_vlan_tag; | |
1841 | ||
1842 | tpd->word3 |= 1 << TPD_INS_VL_TAG_SHIFT; | |
1843 | AT_VLAN_TAG_TO_TPD_TAG(vlan_tag, atl1e_vlan_tag); | |
1844 | tpd->word2 |= (atl1e_vlan_tag & TPD_VLANTAG_MASK) << | |
1845 | TPD_VLAN_SHIFT; | |
1846 | } | |
1847 | ||
17d0cdfa | 1848 | if (skb->protocol == htons(ETH_P_8021Q)) |
a6a53252 JY |
1849 | tpd->word3 |= 1 << TPD_VL_TAGGED_SHIFT; |
1850 | ||
1851 | if (skb_network_offset(skb) != ETH_HLEN) | |
1852 | tpd->word3 |= 1 << TPD_ETHTYPE_SHIFT; /* 802.3 frame */ | |
1853 | ||
1854 | /* do TSO and check sum */ | |
1855 | if (atl1e_tso_csum(adapter, skb, tpd) != 0) { | |
1856 | spin_unlock_irqrestore(&adapter->tx_lock, flags); | |
1857 | dev_kfree_skb_any(skb); | |
1858 | return NETDEV_TX_OK; | |
1859 | } | |
1860 | ||
1861 | atl1e_tx_map(adapter, skb, tpd); | |
1862 | atl1e_tx_queue(adapter, tpd_req, tpd); | |
1863 | ||
cdd0db05 | 1864 | netdev->trans_start = jiffies; /* NETIF_F_LLTX driver :( */ |
a6a53252 JY |
1865 | spin_unlock_irqrestore(&adapter->tx_lock, flags); |
1866 | return NETDEV_TX_OK; | |
1867 | } | |
1868 | ||
1869 | static void atl1e_free_irq(struct atl1e_adapter *adapter) | |
1870 | { | |
1871 | struct net_device *netdev = adapter->netdev; | |
1872 | ||
1873 | free_irq(adapter->pdev->irq, netdev); | |
1874 | ||
1875 | if (adapter->have_msi) | |
1876 | pci_disable_msi(adapter->pdev); | |
1877 | } | |
1878 | ||
1879 | static int atl1e_request_irq(struct atl1e_adapter *adapter) | |
1880 | { | |
1881 | struct pci_dev *pdev = adapter->pdev; | |
1882 | struct net_device *netdev = adapter->netdev; | |
1883 | int flags = 0; | |
1884 | int err = 0; | |
1885 | ||
1886 | adapter->have_msi = true; | |
1887 | err = pci_enable_msi(adapter->pdev); | |
1888 | if (err) { | |
1889 | dev_dbg(&pdev->dev, | |
1890 | "Unable to allocate MSI interrupt Error: %d\n", err); | |
1891 | adapter->have_msi = false; | |
1892 | } else | |
1893 | netdev->irq = pdev->irq; | |
1894 | ||
1895 | ||
1896 | if (!adapter->have_msi) | |
1897 | flags |= IRQF_SHARED; | |
a0607fd3 | 1898 | err = request_irq(adapter->pdev->irq, atl1e_intr, flags, |
a6a53252 JY |
1899 | netdev->name, netdev); |
1900 | if (err) { | |
1901 | dev_dbg(&pdev->dev, | |
1902 | "Unable to allocate interrupt Error: %d\n", err); | |
1903 | if (adapter->have_msi) | |
1904 | pci_disable_msi(adapter->pdev); | |
1905 | return err; | |
1906 | } | |
1907 | dev_dbg(&pdev->dev, "atl1e_request_irq OK\n"); | |
1908 | return err; | |
1909 | } | |
1910 | ||
1911 | int atl1e_up(struct atl1e_adapter *adapter) | |
1912 | { | |
1913 | struct net_device *netdev = adapter->netdev; | |
1914 | int err = 0; | |
1915 | u32 val; | |
1916 | ||
1917 | /* hardware has been reset, we need to reload some things */ | |
1918 | err = atl1e_init_hw(&adapter->hw); | |
1919 | if (err) { | |
1920 | err = -EIO; | |
1921 | return err; | |
1922 | } | |
1923 | atl1e_init_ring_ptrs(adapter); | |
1924 | atl1e_set_multi(netdev); | |
1925 | atl1e_restore_vlan(adapter); | |
1926 | ||
1927 | if (atl1e_configure(adapter)) { | |
1928 | err = -EIO; | |
1929 | goto err_up; | |
1930 | } | |
1931 | ||
1932 | clear_bit(__AT_DOWN, &adapter->flags); | |
1933 | napi_enable(&adapter->napi); | |
1934 | atl1e_irq_enable(adapter); | |
1935 | val = AT_READ_REG(&adapter->hw, REG_MASTER_CTRL); | |
1936 | AT_WRITE_REG(&adapter->hw, REG_MASTER_CTRL, | |
1937 | val | MASTER_CTRL_MANUAL_INT); | |
1938 | ||
1939 | err_up: | |
1940 | return err; | |
1941 | } | |
1942 | ||
1943 | void atl1e_down(struct atl1e_adapter *adapter) | |
1944 | { | |
1945 | struct net_device *netdev = adapter->netdev; | |
1946 | ||
1947 | /* signal that we're down so the interrupt handler does not | |
1948 | * reschedule our watchdog timer */ | |
1949 | set_bit(__AT_DOWN, &adapter->flags); | |
1950 | ||
1951 | #ifdef NETIF_F_LLTX | |
1952 | netif_stop_queue(netdev); | |
1953 | #else | |
1954 | netif_tx_disable(netdev); | |
1955 | #endif | |
1956 | ||
1957 | /* reset MAC to disable all RX/TX */ | |
1958 | atl1e_reset_hw(&adapter->hw); | |
1959 | msleep(1); | |
1960 | ||
1961 | napi_disable(&adapter->napi); | |
1962 | atl1e_del_timer(adapter); | |
1963 | atl1e_irq_disable(adapter); | |
1964 | ||
1965 | netif_carrier_off(netdev); | |
1966 | adapter->link_speed = SPEED_0; | |
1967 | adapter->link_duplex = -1; | |
1968 | atl1e_clean_tx_ring(adapter); | |
1969 | atl1e_clean_rx_ring(adapter); | |
1970 | } | |
1971 | ||
1972 | /* | |
1973 | * atl1e_open - Called when a network interface is made active | |
1974 | * @netdev: network interface device structure | |
1975 | * | |
1976 | * Returns 0 on success, negative value on failure | |
1977 | * | |
1978 | * The open entry point is called when a network interface is made | |
1979 | * active by the system (IFF_UP). At this point all resources needed | |
1980 | * for transmit and receive operations are allocated, the interrupt | |
1981 | * handler is registered with the OS, the watchdog timer is started, | |
1982 | * and the stack is notified that the interface is ready. | |
1983 | */ | |
1984 | static int atl1e_open(struct net_device *netdev) | |
1985 | { | |
1986 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
1987 | int err; | |
1988 | ||
1989 | /* disallow open during test */ | |
1990 | if (test_bit(__AT_TESTING, &adapter->flags)) | |
1991 | return -EBUSY; | |
1992 | ||
1993 | /* allocate rx/tx dma buffer & descriptors */ | |
1994 | atl1e_init_ring_resources(adapter); | |
1995 | err = atl1e_setup_ring_resources(adapter); | |
1996 | if (unlikely(err)) | |
1997 | return err; | |
1998 | ||
1999 | err = atl1e_request_irq(adapter); | |
2000 | if (unlikely(err)) | |
2001 | goto err_req_irq; | |
2002 | ||
2003 | err = atl1e_up(adapter); | |
2004 | if (unlikely(err)) | |
2005 | goto err_up; | |
2006 | ||
2007 | return 0; | |
2008 | ||
2009 | err_up: | |
2010 | atl1e_free_irq(adapter); | |
2011 | err_req_irq: | |
2012 | atl1e_free_ring_resources(adapter); | |
2013 | atl1e_reset_hw(&adapter->hw); | |
2014 | ||
2015 | return err; | |
2016 | } | |
2017 | ||
2018 | /* | |
2019 | * atl1e_close - Disables a network interface | |
2020 | * @netdev: network interface device structure | |
2021 | * | |
2022 | * Returns 0, this is not allowed to fail | |
2023 | * | |
2024 | * The close entry point is called when an interface is de-activated | |
2025 | * by the OS. The hardware is still under the drivers control, but | |
2026 | * needs to be disabled. A global MAC reset is issued to stop the | |
2027 | * hardware, and all transmit and receive resources are freed. | |
2028 | */ | |
2029 | static int atl1e_close(struct net_device *netdev) | |
2030 | { | |
2031 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
2032 | ||
2033 | WARN_ON(test_bit(__AT_RESETTING, &adapter->flags)); | |
2034 | atl1e_down(adapter); | |
2035 | atl1e_free_irq(adapter); | |
2036 | atl1e_free_ring_resources(adapter); | |
2037 | ||
2038 | return 0; | |
2039 | } | |
2040 | ||
a6a53252 JY |
2041 | static int atl1e_suspend(struct pci_dev *pdev, pm_message_t state) |
2042 | { | |
2043 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2044 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
2045 | struct atl1e_hw *hw = &adapter->hw; | |
2046 | u32 ctrl = 0; | |
2047 | u32 mac_ctrl_data = 0; | |
2048 | u32 wol_ctrl_data = 0; | |
2049 | u16 mii_advertise_data = 0; | |
2050 | u16 mii_bmsr_data = 0; | |
2051 | u16 mii_intr_status_data = 0; | |
2052 | u32 wufc = adapter->wol; | |
2053 | u32 i; | |
2054 | #ifdef CONFIG_PM | |
2055 | int retval = 0; | |
2056 | #endif | |
2057 | ||
2058 | if (netif_running(netdev)) { | |
2059 | WARN_ON(test_bit(__AT_RESETTING, &adapter->flags)); | |
2060 | atl1e_down(adapter); | |
2061 | } | |
2062 | netif_device_detach(netdev); | |
2063 | ||
2064 | #ifdef CONFIG_PM | |
2065 | retval = pci_save_state(pdev); | |
2066 | if (retval) | |
2067 | return retval; | |
2068 | #endif | |
2069 | ||
2070 | if (wufc) { | |
2071 | /* get link status */ | |
2072 | atl1e_read_phy_reg(hw, MII_BMSR, (u16 *)&mii_bmsr_data); | |
2073 | atl1e_read_phy_reg(hw, MII_BMSR, (u16 *)&mii_bmsr_data); | |
2074 | ||
2075 | mii_advertise_data = MII_AR_10T_HD_CAPS; | |
2076 | ||
2077 | if ((atl1e_write_phy_reg(hw, MII_AT001_CR, 0) != 0) || | |
2078 | (atl1e_write_phy_reg(hw, | |
2079 | MII_ADVERTISE, mii_advertise_data) != 0) || | |
2080 | (atl1e_phy_commit(hw)) != 0) { | |
2081 | dev_dbg(&pdev->dev, "set phy register failed\n"); | |
2082 | goto wol_dis; | |
2083 | } | |
2084 | ||
2085 | hw->phy_configured = false; /* re-init PHY when resume */ | |
2086 | ||
2087 | /* turn on magic packet wol */ | |
2088 | if (wufc & AT_WUFC_MAG) | |
2089 | wol_ctrl_data |= WOL_MAGIC_EN | WOL_MAGIC_PME_EN; | |
2090 | ||
2091 | if (wufc & AT_WUFC_LNKC) { | |
2092 | /* if orignal link status is link, just wait for retrive link */ | |
2093 | if (mii_bmsr_data & BMSR_LSTATUS) { | |
2094 | for (i = 0; i < AT_SUSPEND_LINK_TIMEOUT; i++) { | |
2095 | msleep(100); | |
2096 | atl1e_read_phy_reg(hw, MII_BMSR, | |
2097 | (u16 *)&mii_bmsr_data); | |
2098 | if (mii_bmsr_data & BMSR_LSTATUS) | |
2099 | break; | |
2100 | } | |
2101 | ||
2102 | if ((mii_bmsr_data & BMSR_LSTATUS) == 0) | |
2103 | dev_dbg(&pdev->dev, | |
2104 | "%s: Link may change" | |
2105 | "when suspend\n", | |
2106 | atl1e_driver_name); | |
2107 | } | |
2108 | wol_ctrl_data |= WOL_LINK_CHG_EN | WOL_LINK_CHG_PME_EN; | |
2109 | /* only link up can wake up */ | |
2110 | if (atl1e_write_phy_reg(hw, MII_INT_CTRL, 0x400) != 0) { | |
2111 | dev_dbg(&pdev->dev, "%s: read write phy " | |
2112 | "register failed.\n", | |
2113 | atl1e_driver_name); | |
2114 | goto wol_dis; | |
2115 | } | |
2116 | } | |
2117 | /* clear phy interrupt */ | |
2118 | atl1e_read_phy_reg(hw, MII_INT_STATUS, &mii_intr_status_data); | |
2119 | /* Config MAC Ctrl register */ | |
2120 | mac_ctrl_data = MAC_CTRL_RX_EN; | |
2121 | /* set to 10/100M halt duplex */ | |
2122 | mac_ctrl_data |= MAC_CTRL_SPEED_10_100 << MAC_CTRL_SPEED_SHIFT; | |
2123 | mac_ctrl_data |= (((u32)adapter->hw.preamble_len & | |
2124 | MAC_CTRL_PRMLEN_MASK) << | |
2125 | MAC_CTRL_PRMLEN_SHIFT); | |
2126 | ||
2127 | if (adapter->vlgrp) | |
2128 | mac_ctrl_data |= MAC_CTRL_RMV_VLAN; | |
2129 | ||
2130 | /* magic packet maybe Broadcast&multicast&Unicast frame */ | |
2131 | if (wufc & AT_WUFC_MAG) | |
2132 | mac_ctrl_data |= MAC_CTRL_BC_EN; | |
2133 | ||
2134 | dev_dbg(&pdev->dev, | |
2135 | "%s: suspend MAC=0x%x\n", | |
2136 | atl1e_driver_name, mac_ctrl_data); | |
2137 | ||
2138 | AT_WRITE_REG(hw, REG_WOL_CTRL, wol_ctrl_data); | |
2139 | AT_WRITE_REG(hw, REG_MAC_CTRL, mac_ctrl_data); | |
2140 | /* pcie patch */ | |
2141 | ctrl = AT_READ_REG(hw, REG_PCIE_PHYMISC); | |
2142 | ctrl |= PCIE_PHYMISC_FORCE_RCV_DET; | |
2143 | AT_WRITE_REG(hw, REG_PCIE_PHYMISC, ctrl); | |
2144 | pci_enable_wake(pdev, pci_choose_state(pdev, state), 1); | |
2145 | goto suspend_exit; | |
2146 | } | |
2147 | wol_dis: | |
2148 | ||
2149 | /* WOL disabled */ | |
2150 | AT_WRITE_REG(hw, REG_WOL_CTRL, 0); | |
2151 | ||
2152 | /* pcie patch */ | |
2153 | ctrl = AT_READ_REG(hw, REG_PCIE_PHYMISC); | |
2154 | ctrl |= PCIE_PHYMISC_FORCE_RCV_DET; | |
2155 | AT_WRITE_REG(hw, REG_PCIE_PHYMISC, ctrl); | |
2156 | ||
2157 | atl1e_force_ps(hw); | |
2158 | hw->phy_configured = false; /* re-init PHY when resume */ | |
2159 | ||
2160 | pci_enable_wake(pdev, pci_choose_state(pdev, state), 0); | |
2161 | ||
2162 | suspend_exit: | |
2163 | ||
2164 | if (netif_running(netdev)) | |
2165 | atl1e_free_irq(adapter); | |
2166 | ||
2167 | pci_disable_device(pdev); | |
2168 | ||
2169 | pci_set_power_state(pdev, pci_choose_state(pdev, state)); | |
2170 | ||
2171 | return 0; | |
2172 | } | |
2173 | ||
d6f8aa85 | 2174 | #ifdef CONFIG_PM |
a6a53252 JY |
2175 | static int atl1e_resume(struct pci_dev *pdev) |
2176 | { | |
2177 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2178 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
2179 | u32 err; | |
2180 | ||
2181 | pci_set_power_state(pdev, PCI_D0); | |
2182 | pci_restore_state(pdev); | |
2183 | ||
2184 | err = pci_enable_device(pdev); | |
2185 | if (err) { | |
2186 | dev_err(&pdev->dev, "ATL1e: Cannot enable PCI" | |
2187 | " device from suspend\n"); | |
2188 | return err; | |
2189 | } | |
2190 | ||
2191 | pci_set_master(pdev); | |
2192 | ||
2193 | AT_READ_REG(&adapter->hw, REG_WOL_CTRL); /* clear WOL status */ | |
2194 | ||
2195 | pci_enable_wake(pdev, PCI_D3hot, 0); | |
2196 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
2197 | ||
2198 | AT_WRITE_REG(&adapter->hw, REG_WOL_CTRL, 0); | |
2199 | ||
50f684b9 | 2200 | if (netif_running(netdev)) { |
a6a53252 JY |
2201 | err = atl1e_request_irq(adapter); |
2202 | if (err) | |
2203 | return err; | |
50f684b9 | 2204 | } |
a6a53252 JY |
2205 | |
2206 | atl1e_reset_hw(&adapter->hw); | |
2207 | ||
2208 | if (netif_running(netdev)) | |
2209 | atl1e_up(adapter); | |
2210 | ||
2211 | netif_device_attach(netdev); | |
2212 | ||
2213 | return 0; | |
2214 | } | |
2215 | #endif | |
2216 | ||
2217 | static void atl1e_shutdown(struct pci_dev *pdev) | |
2218 | { | |
2219 | atl1e_suspend(pdev, PMSG_SUSPEND); | |
2220 | } | |
2221 | ||
1e058ab5 SH |
2222 | static const struct net_device_ops atl1e_netdev_ops = { |
2223 | .ndo_open = atl1e_open, | |
2224 | .ndo_stop = atl1e_close, | |
00829823 | 2225 | .ndo_start_xmit = atl1e_xmit_frame, |
1e058ab5 SH |
2226 | .ndo_get_stats = atl1e_get_stats, |
2227 | .ndo_set_multicast_list = atl1e_set_multi, | |
2228 | .ndo_validate_addr = eth_validate_addr, | |
2229 | .ndo_set_mac_address = atl1e_set_mac_addr, | |
2230 | .ndo_change_mtu = atl1e_change_mtu, | |
2231 | .ndo_do_ioctl = atl1e_ioctl, | |
2232 | .ndo_tx_timeout = atl1e_tx_timeout, | |
2233 | .ndo_vlan_rx_register = atl1e_vlan_rx_register, | |
2234 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
2235 | .ndo_poll_controller = atl1e_netpoll, | |
2236 | #endif | |
2237 | ||
2238 | }; | |
2239 | ||
a6a53252 JY |
2240 | static int atl1e_init_netdev(struct net_device *netdev, struct pci_dev *pdev) |
2241 | { | |
2242 | SET_NETDEV_DEV(netdev, &pdev->dev); | |
2243 | pci_set_drvdata(pdev, netdev); | |
2244 | ||
2245 | netdev->irq = pdev->irq; | |
1e058ab5 | 2246 | netdev->netdev_ops = &atl1e_netdev_ops; |
00829823 | 2247 | |
a6a53252 | 2248 | netdev->watchdog_timeo = AT_TX_WATCHDOG; |
a6a53252 JY |
2249 | atl1e_set_ethtool_ops(netdev); |
2250 | ||
2251 | netdev->features = NETIF_F_SG | NETIF_F_HW_CSUM | | |
2252 | NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX; | |
2253 | netdev->features |= NETIF_F_LLTX; | |
2254 | netdev->features |= NETIF_F_TSO; | |
a6a53252 JY |
2255 | |
2256 | return 0; | |
2257 | } | |
2258 | ||
2259 | /* | |
2260 | * atl1e_probe - Device Initialization Routine | |
2261 | * @pdev: PCI device information struct | |
2262 | * @ent: entry in atl1e_pci_tbl | |
2263 | * | |
2264 | * Returns 0 on success, negative on failure | |
2265 | * | |
2266 | * atl1e_probe initializes an adapter identified by a pci_dev structure. | |
2267 | * The OS initialization, configuring of the adapter private structure, | |
2268 | * and a hardware reset occur. | |
2269 | */ | |
2270 | static int __devinit atl1e_probe(struct pci_dev *pdev, | |
2271 | const struct pci_device_id *ent) | |
2272 | { | |
2273 | struct net_device *netdev; | |
2274 | struct atl1e_adapter *adapter = NULL; | |
2275 | static int cards_found; | |
2276 | ||
2277 | int err = 0; | |
2278 | ||
2279 | err = pci_enable_device(pdev); | |
2280 | if (err) { | |
2281 | dev_err(&pdev->dev, "cannot enable PCI device\n"); | |
2282 | return err; | |
2283 | } | |
2284 | ||
2285 | /* | |
2286 | * The atl1e chip can DMA to 64-bit addresses, but it uses a single | |
2287 | * shared register for the high 32 bits, so only a single, aligned, | |
2288 | * 4 GB physical address range can be used at a time. | |
2289 | * | |
2290 | * Supporting 64-bit DMA on this hardware is more trouble than it's | |
2291 | * worth. It is far easier to limit to 32-bit DMA than update | |
2292 | * various kernel subsystems to support the mechanics required by a | |
2293 | * fixed-high-32-bit system. | |
2294 | */ | |
284901a9 YH |
2295 | if ((pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) || |
2296 | (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)) { | |
a6a53252 JY |
2297 | dev_err(&pdev->dev, "No usable DMA configuration,aborting\n"); |
2298 | goto err_dma; | |
2299 | } | |
2300 | ||
2301 | err = pci_request_regions(pdev, atl1e_driver_name); | |
2302 | if (err) { | |
2303 | dev_err(&pdev->dev, "cannot obtain PCI resources\n"); | |
2304 | goto err_pci_reg; | |
2305 | } | |
2306 | ||
2307 | pci_set_master(pdev); | |
2308 | ||
2309 | netdev = alloc_etherdev(sizeof(struct atl1e_adapter)); | |
2310 | if (netdev == NULL) { | |
2311 | err = -ENOMEM; | |
2312 | dev_err(&pdev->dev, "etherdev alloc failed\n"); | |
2313 | goto err_alloc_etherdev; | |
2314 | } | |
2315 | ||
2316 | err = atl1e_init_netdev(netdev, pdev); | |
2317 | if (err) { | |
2318 | dev_err(&pdev->dev, "init netdevice failed\n"); | |
2319 | goto err_init_netdev; | |
2320 | } | |
2321 | adapter = netdev_priv(netdev); | |
2322 | adapter->bd_number = cards_found; | |
2323 | adapter->netdev = netdev; | |
2324 | adapter->pdev = pdev; | |
2325 | adapter->hw.adapter = adapter; | |
2326 | adapter->hw.hw_addr = pci_iomap(pdev, BAR_0, 0); | |
2327 | if (!adapter->hw.hw_addr) { | |
2328 | err = -EIO; | |
2329 | dev_err(&pdev->dev, "cannot map device registers\n"); | |
2330 | goto err_ioremap; | |
2331 | } | |
2332 | netdev->base_addr = (unsigned long)adapter->hw.hw_addr; | |
2333 | ||
2334 | /* init mii data */ | |
2335 | adapter->mii.dev = netdev; | |
2336 | adapter->mii.mdio_read = atl1e_mdio_read; | |
2337 | adapter->mii.mdio_write = atl1e_mdio_write; | |
2338 | adapter->mii.phy_id_mask = 0x1f; | |
2339 | adapter->mii.reg_num_mask = MDIO_REG_ADDR_MASK; | |
2340 | ||
2341 | netif_napi_add(netdev, &adapter->napi, atl1e_clean, 64); | |
2342 | ||
2343 | init_timer(&adapter->phy_config_timer); | |
2344 | adapter->phy_config_timer.function = &atl1e_phy_config; | |
2345 | adapter->phy_config_timer.data = (unsigned long) adapter; | |
2346 | ||
2347 | /* get user settings */ | |
2348 | atl1e_check_options(adapter); | |
2349 | /* | |
2350 | * Mark all PCI regions associated with PCI device | |
2351 | * pdev as being reserved by owner atl1e_driver_name | |
2352 | * Enables bus-mastering on the device and calls | |
2353 | * pcibios_set_master to do the needed arch specific settings | |
2354 | */ | |
2355 | atl1e_setup_pcicmd(pdev); | |
2356 | /* setup the private structure */ | |
2357 | err = atl1e_sw_init(adapter); | |
2358 | if (err) { | |
2359 | dev_err(&pdev->dev, "net device private data init failed\n"); | |
2360 | goto err_sw_init; | |
2361 | } | |
2362 | ||
2363 | /* Init GPHY as early as possible due to power saving issue */ | |
a6a53252 | 2364 | atl1e_phy_init(&adapter->hw); |
a6a53252 JY |
2365 | /* reset the controller to |
2366 | * put the device in a known good starting state */ | |
2367 | err = atl1e_reset_hw(&adapter->hw); | |
2368 | if (err) { | |
2369 | err = -EIO; | |
2370 | goto err_reset; | |
2371 | } | |
2372 | ||
2373 | if (atl1e_read_mac_addr(&adapter->hw) != 0) { | |
2374 | err = -EIO; | |
2375 | dev_err(&pdev->dev, "get mac address failed\n"); | |
2376 | goto err_eeprom; | |
2377 | } | |
2378 | ||
2379 | memcpy(netdev->dev_addr, adapter->hw.mac_addr, netdev->addr_len); | |
2380 | memcpy(netdev->perm_addr, adapter->hw.mac_addr, netdev->addr_len); | |
1b8e664d | 2381 | dev_dbg(&pdev->dev, "mac address : %pM\n", adapter->hw.mac_addr); |
a6a53252 JY |
2382 | |
2383 | INIT_WORK(&adapter->reset_task, atl1e_reset_task); | |
2384 | INIT_WORK(&adapter->link_chg_task, atl1e_link_chg_task); | |
2385 | err = register_netdev(netdev); | |
2386 | if (err) { | |
2387 | dev_err(&pdev->dev, "register netdevice failed\n"); | |
2388 | goto err_register; | |
2389 | } | |
2390 | ||
2391 | /* assume we have no link for now */ | |
2392 | netif_stop_queue(netdev); | |
2393 | netif_carrier_off(netdev); | |
2394 | ||
2395 | cards_found++; | |
2396 | ||
2397 | return 0; | |
2398 | ||
2399 | err_reset: | |
2400 | err_register: | |
2401 | err_sw_init: | |
2402 | err_eeprom: | |
2403 | iounmap(adapter->hw.hw_addr); | |
2404 | err_init_netdev: | |
2405 | err_ioremap: | |
2406 | free_netdev(netdev); | |
2407 | err_alloc_etherdev: | |
2408 | pci_release_regions(pdev); | |
2409 | err_pci_reg: | |
2410 | err_dma: | |
2411 | pci_disable_device(pdev); | |
2412 | return err; | |
2413 | } | |
2414 | ||
2415 | /* | |
2416 | * atl1e_remove - Device Removal Routine | |
2417 | * @pdev: PCI device information struct | |
2418 | * | |
2419 | * atl1e_remove is called by the PCI subsystem to alert the driver | |
2420 | * that it should release a PCI device. The could be caused by a | |
2421 | * Hot-Plug event, or because the driver is going to be removed from | |
2422 | * memory. | |
2423 | */ | |
2424 | static void __devexit atl1e_remove(struct pci_dev *pdev) | |
2425 | { | |
2426 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2427 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
2428 | ||
2429 | /* | |
2430 | * flush_scheduled work may reschedule our watchdog task, so | |
2431 | * explicitly disable watchdog tasks from being rescheduled | |
2432 | */ | |
2433 | set_bit(__AT_DOWN, &adapter->flags); | |
2434 | ||
2435 | atl1e_del_timer(adapter); | |
2436 | atl1e_cancel_work(adapter); | |
2437 | ||
2438 | unregister_netdev(netdev); | |
2439 | atl1e_free_ring_resources(adapter); | |
2440 | atl1e_force_ps(&adapter->hw); | |
2441 | iounmap(adapter->hw.hw_addr); | |
2442 | pci_release_regions(pdev); | |
2443 | free_netdev(netdev); | |
2444 | pci_disable_device(pdev); | |
2445 | } | |
2446 | ||
2447 | /* | |
2448 | * atl1e_io_error_detected - called when PCI error is detected | |
2449 | * @pdev: Pointer to PCI device | |
2450 | * @state: The current pci connection state | |
2451 | * | |
2452 | * This function is called after a PCI bus error affecting | |
2453 | * this device has been detected. | |
2454 | */ | |
2455 | static pci_ers_result_t | |
2456 | atl1e_io_error_detected(struct pci_dev *pdev, pci_channel_state_t state) | |
2457 | { | |
2458 | struct net_device *netdev = pci_get_drvdata(pdev); | |
454d7c9b | 2459 | struct atl1e_adapter *adapter = netdev_priv(netdev); |
a6a53252 JY |
2460 | |
2461 | netif_device_detach(netdev); | |
2462 | ||
0d6ab58d DN |
2463 | if (state == pci_channel_io_perm_failure) |
2464 | return PCI_ERS_RESULT_DISCONNECT; | |
2465 | ||
a6a53252 JY |
2466 | if (netif_running(netdev)) |
2467 | atl1e_down(adapter); | |
2468 | ||
2469 | pci_disable_device(pdev); | |
2470 | ||
2471 | /* Request a slot slot reset. */ | |
2472 | return PCI_ERS_RESULT_NEED_RESET; | |
2473 | } | |
2474 | ||
2475 | /* | |
2476 | * atl1e_io_slot_reset - called after the pci bus has been reset. | |
2477 | * @pdev: Pointer to PCI device | |
2478 | * | |
2479 | * Restart the card from scratch, as if from a cold-boot. Implementation | |
2480 | * resembles the first-half of the e1000_resume routine. | |
2481 | */ | |
2482 | static pci_ers_result_t atl1e_io_slot_reset(struct pci_dev *pdev) | |
2483 | { | |
2484 | struct net_device *netdev = pci_get_drvdata(pdev); | |
454d7c9b | 2485 | struct atl1e_adapter *adapter = netdev_priv(netdev); |
a6a53252 JY |
2486 | |
2487 | if (pci_enable_device(pdev)) { | |
2488 | dev_err(&pdev->dev, | |
2489 | "ATL1e: Cannot re-enable PCI device after reset.\n"); | |
2490 | return PCI_ERS_RESULT_DISCONNECT; | |
2491 | } | |
2492 | pci_set_master(pdev); | |
2493 | ||
2494 | pci_enable_wake(pdev, PCI_D3hot, 0); | |
2495 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
2496 | ||
2497 | atl1e_reset_hw(&adapter->hw); | |
2498 | ||
2499 | return PCI_ERS_RESULT_RECOVERED; | |
2500 | } | |
2501 | ||
2502 | /* | |
2503 | * atl1e_io_resume - called when traffic can start flowing again. | |
2504 | * @pdev: Pointer to PCI device | |
2505 | * | |
2506 | * This callback is called when the error recovery driver tells us that | |
2507 | * its OK to resume normal operation. Implementation resembles the | |
2508 | * second-half of the atl1e_resume routine. | |
2509 | */ | |
2510 | static void atl1e_io_resume(struct pci_dev *pdev) | |
2511 | { | |
2512 | struct net_device *netdev = pci_get_drvdata(pdev); | |
454d7c9b | 2513 | struct atl1e_adapter *adapter = netdev_priv(netdev); |
a6a53252 JY |
2514 | |
2515 | if (netif_running(netdev)) { | |
2516 | if (atl1e_up(adapter)) { | |
2517 | dev_err(&pdev->dev, | |
2518 | "ATL1e: can't bring device back up after reset\n"); | |
2519 | return; | |
2520 | } | |
2521 | } | |
2522 | ||
2523 | netif_device_attach(netdev); | |
2524 | } | |
2525 | ||
2526 | static struct pci_error_handlers atl1e_err_handler = { | |
2527 | .error_detected = atl1e_io_error_detected, | |
2528 | .slot_reset = atl1e_io_slot_reset, | |
2529 | .resume = atl1e_io_resume, | |
2530 | }; | |
2531 | ||
2532 | static struct pci_driver atl1e_driver = { | |
2533 | .name = atl1e_driver_name, | |
2534 | .id_table = atl1e_pci_tbl, | |
2535 | .probe = atl1e_probe, | |
2536 | .remove = __devexit_p(atl1e_remove), | |
2537 | /* Power Managment Hooks */ | |
2538 | #ifdef CONFIG_PM | |
2539 | .suspend = atl1e_suspend, | |
2540 | .resume = atl1e_resume, | |
2541 | #endif | |
2542 | .shutdown = atl1e_shutdown, | |
2543 | .err_handler = &atl1e_err_handler | |
2544 | }; | |
2545 | ||
2546 | /* | |
2547 | * atl1e_init_module - Driver Registration Routine | |
2548 | * | |
2549 | * atl1e_init_module is the first routine called when the driver is | |
2550 | * loaded. All it does is register with the PCI subsystem. | |
2551 | */ | |
2552 | static int __init atl1e_init_module(void) | |
2553 | { | |
2554 | return pci_register_driver(&atl1e_driver); | |
2555 | } | |
2556 | ||
2557 | /* | |
2558 | * atl1e_exit_module - Driver Exit Cleanup Routine | |
2559 | * | |
2560 | * atl1e_exit_module is called just before the driver is removed | |
2561 | * from memory. | |
2562 | */ | |
2563 | static void __exit atl1e_exit_module(void) | |
2564 | { | |
2565 | pci_unregister_driver(&atl1e_driver); | |
2566 | } | |
2567 | ||
2568 | module_init(atl1e_init_module); | |
2569 | module_exit(atl1e_exit_module); |