Commit | Line | Data |
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1a59d1b8 | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
a6a53252 JY |
2 | /* |
3 | * Copyright(c) 2007 Atheros Corporation. All rights reserved. | |
4 | * | |
5 | * Derived from Intel e1000 driver | |
6 | * Copyright(c) 1999 - 2005 Intel Corporation. All rights reserved. | |
a6a53252 JY |
7 | */ |
8 | ||
9 | #include "atl1e.h" | |
10 | ||
a6a53252 | 11 | char atl1e_driver_name[] = "ATL1E"; |
a6a53252 JY |
12 | #define PCI_DEVICE_ID_ATTANSIC_L1E 0x1026 |
13 | /* | |
14 | * atl1e_pci_tbl - PCI Device ID Table | |
15 | * | |
16 | * Wildcard entries (PCI_ANY_ID) should come last | |
17 | * Last entry must be all 0s | |
18 | * | |
19 | * { Vendor ID, Device ID, SubVendor ID, SubDevice ID, | |
20 | * Class, Class Mask, private data (not used) } | |
21 | */ | |
9baa3c34 | 22 | static const struct pci_device_id atl1e_pci_tbl[] = { |
a6a53252 | 23 | {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC, PCI_DEVICE_ID_ATTANSIC_L1E)}, |
bdb0e010 | 24 | {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC, 0x1066)}, |
a6a53252 JY |
25 | /* required last entry */ |
26 | { 0 } | |
27 | }; | |
28 | MODULE_DEVICE_TABLE(pci, atl1e_pci_tbl); | |
29 | ||
30 | MODULE_AUTHOR("Atheros Corporation, <xiong.huang@atheros.com>, Jie Yang <jie.yang@atheros.com>"); | |
31 | MODULE_DESCRIPTION("Atheros 1000M Ethernet Network Driver"); | |
32 | MODULE_LICENSE("GPL"); | |
a6a53252 | 33 | |
e6ca2328 | 34 | static void atl1e_setup_mac_ctrl(struct atl1e_adapter *adapter); |
a6a53252 JY |
35 | |
36 | static const u16 | |
37 | atl1e_rx_page_vld_regs[AT_MAX_RECEIVE_QUEUE][AT_PAGE_NUM_PER_QUEUE] = | |
38 | { | |
39 | {REG_HOST_RXF0_PAGE0_VLD, REG_HOST_RXF0_PAGE1_VLD}, | |
40 | {REG_HOST_RXF1_PAGE0_VLD, REG_HOST_RXF1_PAGE1_VLD}, | |
41 | {REG_HOST_RXF2_PAGE0_VLD, REG_HOST_RXF2_PAGE1_VLD}, | |
42 | {REG_HOST_RXF3_PAGE0_VLD, REG_HOST_RXF3_PAGE1_VLD} | |
43 | }; | |
44 | ||
45 | static const u16 atl1e_rx_page_hi_addr_regs[AT_MAX_RECEIVE_QUEUE] = | |
46 | { | |
47 | REG_RXF0_BASE_ADDR_HI, | |
48 | REG_RXF1_BASE_ADDR_HI, | |
49 | REG_RXF2_BASE_ADDR_HI, | |
50 | REG_RXF3_BASE_ADDR_HI | |
51 | }; | |
52 | ||
53 | static const u16 | |
54 | atl1e_rx_page_lo_addr_regs[AT_MAX_RECEIVE_QUEUE][AT_PAGE_NUM_PER_QUEUE] = | |
55 | { | |
56 | {REG_HOST_RXF0_PAGE0_LO, REG_HOST_RXF0_PAGE1_LO}, | |
57 | {REG_HOST_RXF1_PAGE0_LO, REG_HOST_RXF1_PAGE1_LO}, | |
58 | {REG_HOST_RXF2_PAGE0_LO, REG_HOST_RXF2_PAGE1_LO}, | |
59 | {REG_HOST_RXF3_PAGE0_LO, REG_HOST_RXF3_PAGE1_LO} | |
60 | }; | |
61 | ||
62 | static const u16 | |
63 | atl1e_rx_page_write_offset_regs[AT_MAX_RECEIVE_QUEUE][AT_PAGE_NUM_PER_QUEUE] = | |
64 | { | |
65 | {REG_HOST_RXF0_MB0_LO, REG_HOST_RXF0_MB1_LO}, | |
66 | {REG_HOST_RXF1_MB0_LO, REG_HOST_RXF1_MB1_LO}, | |
67 | {REG_HOST_RXF2_MB0_LO, REG_HOST_RXF2_MB1_LO}, | |
68 | {REG_HOST_RXF3_MB0_LO, REG_HOST_RXF3_MB1_LO} | |
69 | }; | |
70 | ||
71 | static const u16 atl1e_pay_load_size[] = { | |
72 | 128, 256, 512, 1024, 2048, 4096, | |
73 | }; | |
74 | ||
49ce9c2c | 75 | /** |
a6a53252 JY |
76 | * atl1e_irq_enable - Enable default interrupt generation settings |
77 | * @adapter: board private structure | |
78 | */ | |
79 | static inline void atl1e_irq_enable(struct atl1e_adapter *adapter) | |
80 | { | |
81 | if (likely(atomic_dec_and_test(&adapter->irq_sem))) { | |
82 | AT_WRITE_REG(&adapter->hw, REG_ISR, 0); | |
83 | AT_WRITE_REG(&adapter->hw, REG_IMR, IMR_NORMAL_MASK); | |
84 | AT_WRITE_FLUSH(&adapter->hw); | |
85 | } | |
86 | } | |
87 | ||
49ce9c2c | 88 | /** |
a6a53252 JY |
89 | * atl1e_irq_disable - Mask off interrupt generation on the NIC |
90 | * @adapter: board private structure | |
91 | */ | |
92 | static inline void atl1e_irq_disable(struct atl1e_adapter *adapter) | |
93 | { | |
94 | atomic_inc(&adapter->irq_sem); | |
95 | AT_WRITE_REG(&adapter->hw, REG_IMR, 0); | |
96 | AT_WRITE_FLUSH(&adapter->hw); | |
97 | synchronize_irq(adapter->pdev->irq); | |
98 | } | |
99 | ||
49ce9c2c | 100 | /** |
a6a53252 JY |
101 | * atl1e_irq_reset - reset interrupt confiure on the NIC |
102 | * @adapter: board private structure | |
103 | */ | |
104 | static inline void atl1e_irq_reset(struct atl1e_adapter *adapter) | |
105 | { | |
106 | atomic_set(&adapter->irq_sem, 0); | |
107 | AT_WRITE_REG(&adapter->hw, REG_ISR, 0); | |
108 | AT_WRITE_REG(&adapter->hw, REG_IMR, 0); | |
109 | AT_WRITE_FLUSH(&adapter->hw); | |
110 | } | |
111 | ||
49ce9c2c | 112 | /** |
a6a53252 | 113 | * atl1e_phy_config - Timer Call-back |
d0ea5cbd | 114 | * @t: timer list containing pointer to netdev cast into an unsigned long |
a6a53252 | 115 | */ |
e99e88a9 | 116 | static void atl1e_phy_config(struct timer_list *t) |
a6a53252 | 117 | { |
e99e88a9 KC |
118 | struct atl1e_adapter *adapter = from_timer(adapter, t, |
119 | phy_config_timer); | |
a6a53252 JY |
120 | struct atl1e_hw *hw = &adapter->hw; |
121 | unsigned long flags; | |
122 | ||
123 | spin_lock_irqsave(&adapter->mdio_lock, flags); | |
124 | atl1e_restart_autoneg(hw); | |
125 | spin_unlock_irqrestore(&adapter->mdio_lock, flags); | |
126 | } | |
127 | ||
128 | void atl1e_reinit_locked(struct atl1e_adapter *adapter) | |
129 | { | |
a6a53252 JY |
130 | while (test_and_set_bit(__AT_RESETTING, &adapter->flags)) |
131 | msleep(1); | |
132 | atl1e_down(adapter); | |
133 | atl1e_up(adapter); | |
134 | clear_bit(__AT_RESETTING, &adapter->flags); | |
135 | } | |
136 | ||
137 | static void atl1e_reset_task(struct work_struct *work) | |
138 | { | |
139 | struct atl1e_adapter *adapter; | |
140 | adapter = container_of(work, struct atl1e_adapter, reset_task); | |
141 | ||
142 | atl1e_reinit_locked(adapter); | |
143 | } | |
144 | ||
145 | static int atl1e_check_link(struct atl1e_adapter *adapter) | |
146 | { | |
147 | struct atl1e_hw *hw = &adapter->hw; | |
148 | struct net_device *netdev = adapter->netdev; | |
a6a53252 JY |
149 | int err = 0; |
150 | u16 speed, duplex, phy_data; | |
151 | ||
ba211e3e | 152 | /* MII_BMSR must read twice */ |
a6a53252 JY |
153 | atl1e_read_phy_reg(hw, MII_BMSR, &phy_data); |
154 | atl1e_read_phy_reg(hw, MII_BMSR, &phy_data); | |
155 | if ((phy_data & BMSR_LSTATUS) == 0) { | |
156 | /* link down */ | |
157 | if (netif_carrier_ok(netdev)) { /* old link state: Up */ | |
158 | u32 value; | |
159 | /* disable rx */ | |
160 | value = AT_READ_REG(hw, REG_MAC_CTRL); | |
161 | value &= ~MAC_CTRL_RX_EN; | |
162 | AT_WRITE_REG(hw, REG_MAC_CTRL, value); | |
163 | adapter->link_speed = SPEED_0; | |
164 | netif_carrier_off(netdev); | |
165 | netif_stop_queue(netdev); | |
166 | } | |
167 | } else { | |
168 | /* Link Up */ | |
169 | err = atl1e_get_speed_and_duplex(hw, &speed, &duplex); | |
170 | if (unlikely(err)) | |
171 | return err; | |
172 | ||
173 | /* link result is our setting */ | |
174 | if (adapter->link_speed != speed || | |
175 | adapter->link_duplex != duplex) { | |
176 | adapter->link_speed = speed; | |
177 | adapter->link_duplex = duplex; | |
178 | atl1e_setup_mac_ctrl(adapter); | |
ba211e3e JP |
179 | netdev_info(netdev, |
180 | "NIC Link is Up <%d Mbps %s Duplex>\n", | |
181 | adapter->link_speed, | |
182 | adapter->link_duplex == FULL_DUPLEX ? | |
183 | "Full" : "Half"); | |
a6a53252 JY |
184 | } |
185 | ||
186 | if (!netif_carrier_ok(netdev)) { | |
187 | /* Link down -> Up */ | |
188 | netif_carrier_on(netdev); | |
189 | netif_wake_queue(netdev); | |
190 | } | |
191 | } | |
192 | return 0; | |
193 | } | |
194 | ||
49ce9c2c | 195 | /** |
a6a53252 | 196 | * atl1e_link_chg_task - deal with link change event Out of interrupt context |
d0ea5cbd | 197 | * @work: work struct with driver info |
a6a53252 JY |
198 | */ |
199 | static void atl1e_link_chg_task(struct work_struct *work) | |
200 | { | |
201 | struct atl1e_adapter *adapter; | |
202 | unsigned long flags; | |
203 | ||
204 | adapter = container_of(work, struct atl1e_adapter, link_chg_task); | |
205 | spin_lock_irqsave(&adapter->mdio_lock, flags); | |
206 | atl1e_check_link(adapter); | |
207 | spin_unlock_irqrestore(&adapter->mdio_lock, flags); | |
208 | } | |
209 | ||
210 | static void atl1e_link_chg_event(struct atl1e_adapter *adapter) | |
211 | { | |
212 | struct net_device *netdev = adapter->netdev; | |
a6a53252 JY |
213 | u16 phy_data = 0; |
214 | u16 link_up = 0; | |
215 | ||
216 | spin_lock(&adapter->mdio_lock); | |
217 | atl1e_read_phy_reg(&adapter->hw, MII_BMSR, &phy_data); | |
218 | atl1e_read_phy_reg(&adapter->hw, MII_BMSR, &phy_data); | |
219 | spin_unlock(&adapter->mdio_lock); | |
220 | link_up = phy_data & BMSR_LSTATUS; | |
221 | /* notify upper layer link down ASAP */ | |
222 | if (!link_up) { | |
223 | if (netif_carrier_ok(netdev)) { | |
224 | /* old link state: Up */ | |
ba211e3e | 225 | netdev_info(netdev, "NIC Link is Down\n"); |
a6a53252 JY |
226 | adapter->link_speed = SPEED_0; |
227 | netif_stop_queue(netdev); | |
228 | } | |
229 | } | |
230 | schedule_work(&adapter->link_chg_task); | |
231 | } | |
232 | ||
233 | static void atl1e_del_timer(struct atl1e_adapter *adapter) | |
234 | { | |
235 | del_timer_sync(&adapter->phy_config_timer); | |
236 | } | |
237 | ||
238 | static void atl1e_cancel_work(struct atl1e_adapter *adapter) | |
239 | { | |
240 | cancel_work_sync(&adapter->reset_task); | |
241 | cancel_work_sync(&adapter->link_chg_task); | |
242 | } | |
243 | ||
49ce9c2c | 244 | /** |
a6a53252 JY |
245 | * atl1e_tx_timeout - Respond to a Tx Hang |
246 | * @netdev: network interface device structure | |
d0ea5cbd | 247 | * @txqueue: the index of the hanging queue |
a6a53252 | 248 | */ |
0290bd29 | 249 | static void atl1e_tx_timeout(struct net_device *netdev, unsigned int txqueue) |
a6a53252 JY |
250 | { |
251 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
252 | ||
253 | /* Do the reset outside of interrupt context */ | |
254 | schedule_work(&adapter->reset_task); | |
255 | } | |
256 | ||
49ce9c2c | 257 | /** |
a6a53252 JY |
258 | * atl1e_set_multi - Multicast and Promiscuous mode set |
259 | * @netdev: network interface device structure | |
260 | * | |
261 | * The set_multi entry point is called whenever the multicast address | |
262 | * list or the network interface flags are updated. This routine is | |
263 | * responsible for configuring the hardware for proper multicast, | |
264 | * promiscuous mode, and all-multi behavior. | |
265 | */ | |
266 | static void atl1e_set_multi(struct net_device *netdev) | |
267 | { | |
268 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
269 | struct atl1e_hw *hw = &adapter->hw; | |
22bedad3 | 270 | struct netdev_hw_addr *ha; |
a6a53252 JY |
271 | u32 mac_ctrl_data = 0; |
272 | u32 hash_value; | |
273 | ||
274 | /* Check for Promiscuous and All Multicast modes */ | |
275 | mac_ctrl_data = AT_READ_REG(hw, REG_MAC_CTRL); | |
276 | ||
277 | if (netdev->flags & IFF_PROMISC) { | |
278 | mac_ctrl_data |= MAC_CTRL_PROMIS_EN; | |
279 | } else if (netdev->flags & IFF_ALLMULTI) { | |
280 | mac_ctrl_data |= MAC_CTRL_MC_ALL_EN; | |
281 | mac_ctrl_data &= ~MAC_CTRL_PROMIS_EN; | |
282 | } else { | |
283 | mac_ctrl_data &= ~(MAC_CTRL_PROMIS_EN | MAC_CTRL_MC_ALL_EN); | |
284 | } | |
285 | ||
286 | AT_WRITE_REG(hw, REG_MAC_CTRL, mac_ctrl_data); | |
287 | ||
288 | /* clear the old settings from the multicast hash table */ | |
289 | AT_WRITE_REG(hw, REG_RX_HASH_TABLE, 0); | |
290 | AT_WRITE_REG_ARRAY(hw, REG_RX_HASH_TABLE, 1, 0); | |
291 | ||
292 | /* comoute mc addresses' hash value ,and put it into hash table */ | |
22bedad3 JP |
293 | netdev_for_each_mc_addr(ha, netdev) { |
294 | hash_value = atl1e_hash_mc_addr(hw, ha->addr); | |
a6a53252 JY |
295 | atl1e_hash_set(hw, hash_value); |
296 | } | |
297 | } | |
298 | ||
40dc9ab2 AM |
299 | static void __atl1e_rx_mode(netdev_features_t features, u32 *mac_ctrl_data) |
300 | { | |
301 | ||
302 | if (features & NETIF_F_RXALL) { | |
303 | /* enable RX of ALL frames */ | |
304 | *mac_ctrl_data |= MAC_CTRL_DBG; | |
305 | } else { | |
306 | /* disable RX of ALL frames */ | |
307 | *mac_ctrl_data &= ~MAC_CTRL_DBG; | |
308 | } | |
309 | } | |
310 | ||
311 | static void atl1e_rx_mode(struct net_device *netdev, | |
312 | netdev_features_t features) | |
313 | { | |
314 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
315 | u32 mac_ctrl_data = 0; | |
316 | ||
317 | netdev_dbg(adapter->netdev, "%s\n", __func__); | |
318 | ||
319 | atl1e_irq_disable(adapter); | |
320 | mac_ctrl_data = AT_READ_REG(&adapter->hw, REG_MAC_CTRL); | |
321 | __atl1e_rx_mode(features, &mac_ctrl_data); | |
322 | AT_WRITE_REG(&adapter->hw, REG_MAC_CTRL, mac_ctrl_data); | |
323 | atl1e_irq_enable(adapter); | |
324 | } | |
325 | ||
326 | ||
c8f44aff | 327 | static void __atl1e_vlan_mode(netdev_features_t features, u32 *mac_ctrl_data) |
2707fffc | 328 | { |
f646968f | 329 | if (features & NETIF_F_HW_VLAN_CTAG_RX) { |
2707fffc JP |
330 | /* enable VLAN tag insert/strip */ |
331 | *mac_ctrl_data |= MAC_CTRL_RMV_VLAN; | |
332 | } else { | |
333 | /* disable VLAN tag insert/strip */ | |
334 | *mac_ctrl_data &= ~MAC_CTRL_RMV_VLAN; | |
335 | } | |
336 | } | |
337 | ||
c8f44aff MM |
338 | static void atl1e_vlan_mode(struct net_device *netdev, |
339 | netdev_features_t features) | |
a6a53252 JY |
340 | { |
341 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
a6a53252 JY |
342 | u32 mac_ctrl_data = 0; |
343 | ||
ba211e3e | 344 | netdev_dbg(adapter->netdev, "%s\n", __func__); |
a6a53252 JY |
345 | |
346 | atl1e_irq_disable(adapter); | |
a6a53252 | 347 | mac_ctrl_data = AT_READ_REG(&adapter->hw, REG_MAC_CTRL); |
2707fffc | 348 | __atl1e_vlan_mode(features, &mac_ctrl_data); |
a6a53252 JY |
349 | AT_WRITE_REG(&adapter->hw, REG_MAC_CTRL, mac_ctrl_data); |
350 | atl1e_irq_enable(adapter); | |
351 | } | |
352 | ||
353 | static void atl1e_restore_vlan(struct atl1e_adapter *adapter) | |
354 | { | |
ba211e3e | 355 | netdev_dbg(adapter->netdev, "%s\n", __func__); |
2707fffc | 356 | atl1e_vlan_mode(adapter->netdev, adapter->netdev->features); |
a6a53252 | 357 | } |
2707fffc | 358 | |
49ce9c2c | 359 | /** |
b43e1554 | 360 | * atl1e_set_mac_addr - Change the Ethernet Address of the NIC |
a6a53252 JY |
361 | * @netdev: network interface device structure |
362 | * @p: pointer to an address structure | |
363 | * | |
364 | * Returns 0 on success, negative on failure | |
365 | */ | |
366 | static int atl1e_set_mac_addr(struct net_device *netdev, void *p) | |
367 | { | |
368 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
369 | struct sockaddr *addr = p; | |
370 | ||
371 | if (!is_valid_ether_addr(addr->sa_data)) | |
372 | return -EADDRNOTAVAIL; | |
373 | ||
374 | if (netif_running(netdev)) | |
375 | return -EBUSY; | |
376 | ||
377 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
378 | memcpy(adapter->hw.mac_addr, addr->sa_data, netdev->addr_len); | |
379 | ||
380 | atl1e_hw_set_mac_addr(&adapter->hw); | |
381 | ||
382 | return 0; | |
383 | } | |
384 | ||
c8f44aff MM |
385 | static netdev_features_t atl1e_fix_features(struct net_device *netdev, |
386 | netdev_features_t features) | |
2707fffc JP |
387 | { |
388 | /* | |
389 | * Since there is no support for separate rx/tx vlan accel | |
390 | * enable/disable make sure tx flag is always in same state as rx. | |
391 | */ | |
f646968f PM |
392 | if (features & NETIF_F_HW_VLAN_CTAG_RX) |
393 | features |= NETIF_F_HW_VLAN_CTAG_TX; | |
2707fffc | 394 | else |
f646968f | 395 | features &= ~NETIF_F_HW_VLAN_CTAG_TX; |
2707fffc JP |
396 | |
397 | return features; | |
398 | } | |
399 | ||
c8f44aff MM |
400 | static int atl1e_set_features(struct net_device *netdev, |
401 | netdev_features_t features) | |
2707fffc | 402 | { |
c8f44aff | 403 | netdev_features_t changed = netdev->features ^ features; |
2707fffc | 404 | |
f646968f | 405 | if (changed & NETIF_F_HW_VLAN_CTAG_RX) |
2707fffc JP |
406 | atl1e_vlan_mode(netdev, features); |
407 | ||
40dc9ab2 AM |
408 | if (changed & NETIF_F_RXALL) |
409 | atl1e_rx_mode(netdev, features); | |
410 | ||
411 | ||
2707fffc JP |
412 | return 0; |
413 | } | |
414 | ||
49ce9c2c | 415 | /** |
a6a53252 JY |
416 | * atl1e_change_mtu - Change the Maximum Transfer Unit |
417 | * @netdev: network interface device structure | |
418 | * @new_mtu: new value for maximum frame size | |
419 | * | |
420 | * Returns 0 on success, negative on failure | |
421 | */ | |
422 | static int atl1e_change_mtu(struct net_device *netdev, int new_mtu) | |
423 | { | |
424 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
a6a53252 JY |
425 | int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN; |
426 | ||
a6a53252 | 427 | /* set MTU */ |
67bef942 | 428 | if (netif_running(netdev)) { |
a6a53252 JY |
429 | while (test_and_set_bit(__AT_RESETTING, &adapter->flags)) |
430 | msleep(1); | |
431 | netdev->mtu = new_mtu; | |
432 | adapter->hw.max_frame_size = new_mtu; | |
433 | adapter->hw.rx_jumbo_th = (max_frame + 7) >> 3; | |
434 | atl1e_down(adapter); | |
435 | atl1e_up(adapter); | |
436 | clear_bit(__AT_RESETTING, &adapter->flags); | |
437 | } | |
438 | return 0; | |
439 | } | |
440 | ||
441 | /* | |
442 | * caller should hold mdio_lock | |
443 | */ | |
444 | static int atl1e_mdio_read(struct net_device *netdev, int phy_id, int reg_num) | |
445 | { | |
446 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
447 | u16 result; | |
448 | ||
449 | atl1e_read_phy_reg(&adapter->hw, reg_num & MDIO_REG_ADDR_MASK, &result); | |
450 | return result; | |
451 | } | |
452 | ||
453 | static void atl1e_mdio_write(struct net_device *netdev, int phy_id, | |
454 | int reg_num, int val) | |
455 | { | |
456 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
457 | ||
ff07d48d KL |
458 | if (atl1e_write_phy_reg(&adapter->hw, |
459 | reg_num & MDIO_REG_ADDR_MASK, val)) | |
460 | netdev_err(netdev, "write phy register failed\n"); | |
a6a53252 JY |
461 | } |
462 | ||
a6a53252 JY |
463 | static int atl1e_mii_ioctl(struct net_device *netdev, |
464 | struct ifreq *ifr, int cmd) | |
465 | { | |
466 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
a6a53252 JY |
467 | struct mii_ioctl_data *data = if_mii(ifr); |
468 | unsigned long flags; | |
469 | int retval = 0; | |
470 | ||
471 | if (!netif_running(netdev)) | |
472 | return -EINVAL; | |
473 | ||
474 | spin_lock_irqsave(&adapter->mdio_lock, flags); | |
475 | switch (cmd) { | |
476 | case SIOCGMIIPHY: | |
477 | data->phy_id = 0; | |
478 | break; | |
479 | ||
480 | case SIOCGMIIREG: | |
a6a53252 JY |
481 | if (atl1e_read_phy_reg(&adapter->hw, data->reg_num & 0x1F, |
482 | &data->val_out)) { | |
483 | retval = -EIO; | |
484 | goto out; | |
485 | } | |
486 | break; | |
487 | ||
488 | case SIOCSMIIREG: | |
a6a53252 JY |
489 | if (data->reg_num & ~(0x1F)) { |
490 | retval = -EFAULT; | |
491 | goto out; | |
492 | } | |
493 | ||
ba211e3e JP |
494 | netdev_dbg(adapter->netdev, "<atl1e_mii_ioctl> write %x %x\n", |
495 | data->reg_num, data->val_in); | |
a6a53252 JY |
496 | if (atl1e_write_phy_reg(&adapter->hw, |
497 | data->reg_num, data->val_in)) { | |
498 | retval = -EIO; | |
499 | goto out; | |
500 | } | |
501 | break; | |
502 | ||
503 | default: | |
504 | retval = -EOPNOTSUPP; | |
505 | break; | |
506 | } | |
507 | out: | |
508 | spin_unlock_irqrestore(&adapter->mdio_lock, flags); | |
509 | return retval; | |
510 | ||
511 | } | |
512 | ||
a6a53252 JY |
513 | static int atl1e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) |
514 | { | |
515 | switch (cmd) { | |
516 | case SIOCGMIIPHY: | |
517 | case SIOCGMIIREG: | |
518 | case SIOCSMIIREG: | |
519 | return atl1e_mii_ioctl(netdev, ifr, cmd); | |
520 | default: | |
521 | return -EOPNOTSUPP; | |
522 | } | |
523 | } | |
524 | ||
525 | static void atl1e_setup_pcicmd(struct pci_dev *pdev) | |
526 | { | |
527 | u16 cmd; | |
528 | ||
529 | pci_read_config_word(pdev, PCI_COMMAND, &cmd); | |
530 | cmd &= ~(PCI_COMMAND_INTX_DISABLE | PCI_COMMAND_IO); | |
531 | cmd |= (PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER); | |
532 | pci_write_config_word(pdev, PCI_COMMAND, cmd); | |
533 | ||
534 | /* | |
535 | * some motherboards BIOS(PXE/EFI) driver may set PME | |
536 | * while they transfer control to OS (Windows/Linux) | |
537 | * so we should clear this bit before NIC work normally | |
538 | */ | |
539 | pci_write_config_dword(pdev, REG_PM_CTRLSTAT, 0); | |
540 | msleep(1); | |
541 | } | |
542 | ||
49ce9c2c | 543 | /** |
a6a53252 JY |
544 | * atl1e_alloc_queues - Allocate memory for all rings |
545 | * @adapter: board private structure to initialize | |
546 | * | |
547 | */ | |
093d369d | 548 | static int atl1e_alloc_queues(struct atl1e_adapter *adapter) |
a6a53252 JY |
549 | { |
550 | return 0; | |
551 | } | |
552 | ||
49ce9c2c | 553 | /** |
a6a53252 JY |
554 | * atl1e_sw_init - Initialize general software structures (struct atl1e_adapter) |
555 | * @adapter: board private structure to initialize | |
556 | * | |
557 | * atl1e_sw_init initializes the Adapter private data structure. | |
558 | * Fields are initialized based on PCI device information and | |
559 | * OS network device settings (MTU size). | |
560 | */ | |
093d369d | 561 | static int atl1e_sw_init(struct atl1e_adapter *adapter) |
a6a53252 JY |
562 | { |
563 | struct atl1e_hw *hw = &adapter->hw; | |
564 | struct pci_dev *pdev = adapter->pdev; | |
565 | u32 phy_status_data = 0; | |
566 | ||
567 | adapter->wol = 0; | |
568 | adapter->link_speed = SPEED_0; /* hardware init */ | |
569 | adapter->link_duplex = FULL_DUPLEX; | |
570 | adapter->num_rx_queues = 1; | |
571 | ||
572 | /* PCI config space info */ | |
573 | hw->vendor_id = pdev->vendor; | |
574 | hw->device_id = pdev->device; | |
575 | hw->subsystem_vendor_id = pdev->subsystem_vendor; | |
576 | hw->subsystem_id = pdev->subsystem_device; | |
ff938e43 | 577 | hw->revision_id = pdev->revision; |
a6a53252 | 578 | |
a6a53252 JY |
579 | pci_read_config_word(pdev, PCI_COMMAND, &hw->pci_cmd_word); |
580 | ||
581 | phy_status_data = AT_READ_REG(hw, REG_PHY_STATUS); | |
582 | /* nic type */ | |
583 | if (hw->revision_id >= 0xF0) { | |
584 | hw->nic_type = athr_l2e_revB; | |
585 | } else { | |
586 | if (phy_status_data & PHY_STATUS_100M) | |
587 | hw->nic_type = athr_l1e; | |
588 | else | |
589 | hw->nic_type = athr_l2e_revA; | |
590 | } | |
591 | ||
592 | phy_status_data = AT_READ_REG(hw, REG_PHY_STATUS); | |
593 | ||
594 | if (phy_status_data & PHY_STATUS_EMI_CA) | |
595 | hw->emi_ca = true; | |
596 | else | |
597 | hw->emi_ca = false; | |
598 | ||
599 | hw->phy_configured = false; | |
600 | hw->preamble_len = 7; | |
601 | hw->max_frame_size = adapter->netdev->mtu; | |
602 | hw->rx_jumbo_th = (hw->max_frame_size + ETH_HLEN + | |
603 | VLAN_HLEN + ETH_FCS_LEN + 7) >> 3; | |
604 | ||
605 | hw->rrs_type = atl1e_rrs_disable; | |
606 | hw->indirect_tab = 0; | |
607 | hw->base_cpu = 0; | |
608 | ||
609 | /* need confirm */ | |
610 | ||
611 | hw->ict = 50000; /* 100ms */ | |
612 | hw->smb_timer = 200000; /* 200ms */ | |
613 | hw->tpd_burst = 5; | |
614 | hw->rrd_thresh = 1; | |
615 | hw->tpd_thresh = adapter->tx_ring.count / 2; | |
616 | hw->rx_count_down = 4; /* 2us resolution */ | |
617 | hw->tx_count_down = hw->imt * 4 / 3; | |
618 | hw->dmar_block = atl1e_dma_req_1024; | |
619 | hw->dmaw_block = atl1e_dma_req_1024; | |
620 | hw->dmar_dly_cnt = 15; | |
621 | hw->dmaw_dly_cnt = 4; | |
622 | ||
623 | if (atl1e_alloc_queues(adapter)) { | |
ba211e3e | 624 | netdev_err(adapter->netdev, "Unable to allocate memory for queues\n"); |
a6a53252 JY |
625 | return -ENOMEM; |
626 | } | |
627 | ||
628 | atomic_set(&adapter->irq_sem, 1); | |
629 | spin_lock_init(&adapter->mdio_lock); | |
a6a53252 JY |
630 | |
631 | set_bit(__AT_DOWN, &adapter->flags); | |
632 | ||
633 | return 0; | |
634 | } | |
635 | ||
49ce9c2c | 636 | /** |
a6a53252 JY |
637 | * atl1e_clean_tx_ring - Free Tx-skb |
638 | * @adapter: board private structure | |
639 | */ | |
640 | static void atl1e_clean_tx_ring(struct atl1e_adapter *adapter) | |
641 | { | |
64699336 | 642 | struct atl1e_tx_ring *tx_ring = &adapter->tx_ring; |
a6a53252 JY |
643 | struct atl1e_tx_buffer *tx_buffer = NULL; |
644 | struct pci_dev *pdev = adapter->pdev; | |
645 | u16 index, ring_count; | |
646 | ||
647 | if (tx_ring->desc == NULL || tx_ring->tx_buffer == NULL) | |
648 | return; | |
649 | ||
650 | ring_count = tx_ring->count; | |
651 | /* first unmmap dma */ | |
652 | for (index = 0; index < ring_count; index++) { | |
653 | tx_buffer = &tx_ring->tx_buffer[index]; | |
654 | if (tx_buffer->dma) { | |
03f18991 | 655 | if (tx_buffer->flags & ATL1E_TX_PCIMAP_SINGLE) |
85eb5bc3 CJ |
656 | dma_unmap_single(&pdev->dev, tx_buffer->dma, |
657 | tx_buffer->length, | |
658 | DMA_TO_DEVICE); | |
03f18991 | 659 | else if (tx_buffer->flags & ATL1E_TX_PCIMAP_PAGE) |
85eb5bc3 CJ |
660 | dma_unmap_page(&pdev->dev, tx_buffer->dma, |
661 | tx_buffer->length, | |
662 | DMA_TO_DEVICE); | |
a6a53252 JY |
663 | tx_buffer->dma = 0; |
664 | } | |
665 | } | |
666 | /* second free skb */ | |
667 | for (index = 0; index < ring_count; index++) { | |
668 | tx_buffer = &tx_ring->tx_buffer[index]; | |
669 | if (tx_buffer->skb) { | |
670 | dev_kfree_skb_any(tx_buffer->skb); | |
671 | tx_buffer->skb = NULL; | |
672 | } | |
673 | } | |
674 | /* Zero out Tx-buffers */ | |
675 | memset(tx_ring->desc, 0, sizeof(struct atl1e_tpd_desc) * | |
676 | ring_count); | |
677 | memset(tx_ring->tx_buffer, 0, sizeof(struct atl1e_tx_buffer) * | |
678 | ring_count); | |
679 | } | |
680 | ||
49ce9c2c | 681 | /** |
a6a53252 JY |
682 | * atl1e_clean_rx_ring - Free rx-reservation skbs |
683 | * @adapter: board private structure | |
684 | */ | |
685 | static void atl1e_clean_rx_ring(struct atl1e_adapter *adapter) | |
686 | { | |
687 | struct atl1e_rx_ring *rx_ring = | |
64699336 | 688 | &adapter->rx_ring; |
a6a53252 JY |
689 | struct atl1e_rx_page_desc *rx_page_desc = rx_ring->rx_page_desc; |
690 | u16 i, j; | |
691 | ||
692 | ||
693 | if (adapter->ring_vir_addr == NULL) | |
694 | return; | |
695 | /* Zero out the descriptor ring */ | |
696 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
697 | for (j = 0; j < AT_PAGE_NUM_PER_QUEUE; j++) { | |
698 | if (rx_page_desc[i].rx_page[j].addr != NULL) { | |
699 | memset(rx_page_desc[i].rx_page[j].addr, 0, | |
700 | rx_ring->real_page_size); | |
701 | } | |
702 | } | |
703 | } | |
704 | } | |
705 | ||
706 | static void atl1e_cal_ring_size(struct atl1e_adapter *adapter, u32 *ring_size) | |
707 | { | |
708 | *ring_size = ((u32)(adapter->tx_ring.count * | |
709 | sizeof(struct atl1e_tpd_desc) + 7 | |
710 | /* tx ring, qword align */ | |
711 | + adapter->rx_ring.real_page_size * AT_PAGE_NUM_PER_QUEUE * | |
712 | adapter->num_rx_queues + 31 | |
713 | /* rx ring, 32 bytes align */ | |
714 | + (1 + AT_PAGE_NUM_PER_QUEUE * adapter->num_rx_queues) * | |
715 | sizeof(u32) + 3)); | |
716 | /* tx, rx cmd, dword align */ | |
717 | } | |
718 | ||
719 | static void atl1e_init_ring_resources(struct atl1e_adapter *adapter) | |
720 | { | |
a6a53252 JY |
721 | struct atl1e_rx_ring *rx_ring = NULL; |
722 | ||
a6a53252 JY |
723 | rx_ring = &adapter->rx_ring; |
724 | ||
725 | rx_ring->real_page_size = adapter->rx_ring.page_size | |
726 | + adapter->hw.max_frame_size | |
727 | + ETH_HLEN + VLAN_HLEN | |
728 | + ETH_FCS_LEN; | |
729 | rx_ring->real_page_size = roundup(rx_ring->real_page_size, 32); | |
730 | atl1e_cal_ring_size(adapter, &adapter->ring_size); | |
731 | ||
732 | adapter->ring_vir_addr = NULL; | |
733 | adapter->rx_ring.desc = NULL; | |
734 | rwlock_init(&adapter->tx_ring.tx_lock); | |
a6a53252 JY |
735 | } |
736 | ||
737 | /* | |
738 | * Read / Write Ptr Initialize: | |
739 | */ | |
740 | static void atl1e_init_ring_ptrs(struct atl1e_adapter *adapter) | |
741 | { | |
742 | struct atl1e_tx_ring *tx_ring = NULL; | |
743 | struct atl1e_rx_ring *rx_ring = NULL; | |
744 | struct atl1e_rx_page_desc *rx_page_desc = NULL; | |
745 | int i, j; | |
746 | ||
747 | tx_ring = &adapter->tx_ring; | |
748 | rx_ring = &adapter->rx_ring; | |
749 | rx_page_desc = rx_ring->rx_page_desc; | |
750 | ||
751 | tx_ring->next_to_use = 0; | |
752 | atomic_set(&tx_ring->next_to_clean, 0); | |
753 | ||
754 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
755 | rx_page_desc[i].rx_using = 0; | |
756 | rx_page_desc[i].rx_nxseq = 0; | |
757 | for (j = 0; j < AT_PAGE_NUM_PER_QUEUE; j++) { | |
758 | *rx_page_desc[i].rx_page[j].write_offset_addr = 0; | |
759 | rx_page_desc[i].rx_page[j].read_offset = 0; | |
760 | } | |
761 | } | |
762 | } | |
763 | ||
49ce9c2c | 764 | /** |
a6a53252 JY |
765 | * atl1e_free_ring_resources - Free Tx / RX descriptor Resources |
766 | * @adapter: board private structure | |
767 | * | |
768 | * Free all transmit software resources | |
769 | */ | |
770 | static void atl1e_free_ring_resources(struct atl1e_adapter *adapter) | |
771 | { | |
772 | struct pci_dev *pdev = adapter->pdev; | |
773 | ||
774 | atl1e_clean_tx_ring(adapter); | |
775 | atl1e_clean_rx_ring(adapter); | |
776 | ||
777 | if (adapter->ring_vir_addr) { | |
85eb5bc3 CJ |
778 | dma_free_coherent(&pdev->dev, adapter->ring_size, |
779 | adapter->ring_vir_addr, adapter->ring_dma); | |
a6a53252 JY |
780 | adapter->ring_vir_addr = NULL; |
781 | } | |
782 | ||
783 | if (adapter->tx_ring.tx_buffer) { | |
784 | kfree(adapter->tx_ring.tx_buffer); | |
785 | adapter->tx_ring.tx_buffer = NULL; | |
786 | } | |
787 | } | |
788 | ||
49ce9c2c | 789 | /** |
b43e1554 | 790 | * atl1e_setup_ring_resources - allocate Tx / RX descriptor resources |
a6a53252 JY |
791 | * @adapter: board private structure |
792 | * | |
793 | * Return 0 on success, negative on failure | |
794 | */ | |
795 | static int atl1e_setup_ring_resources(struct atl1e_adapter *adapter) | |
796 | { | |
797 | struct pci_dev *pdev = adapter->pdev; | |
798 | struct atl1e_tx_ring *tx_ring; | |
799 | struct atl1e_rx_ring *rx_ring; | |
800 | struct atl1e_rx_page_desc *rx_page_desc; | |
801 | int size, i, j; | |
802 | u32 offset = 0; | |
803 | int err = 0; | |
804 | ||
805 | if (adapter->ring_vir_addr != NULL) | |
806 | return 0; /* alloced already */ | |
807 | ||
808 | tx_ring = &adapter->tx_ring; | |
809 | rx_ring = &adapter->rx_ring; | |
810 | ||
811 | /* real ring DMA buffer */ | |
812 | ||
813 | size = adapter->ring_size; | |
85eb5bc3 CJ |
814 | adapter->ring_vir_addr = dma_alloc_coherent(&pdev->dev, |
815 | adapter->ring_size, | |
816 | &adapter->ring_dma, GFP_KERNEL); | |
a6a53252 | 817 | if (adapter->ring_vir_addr == NULL) { |
ba211e3e | 818 | netdev_err(adapter->netdev, |
85eb5bc3 | 819 | "dma_alloc_coherent failed, size = D%d\n", size); |
a6a53252 JY |
820 | return -ENOMEM; |
821 | } | |
822 | ||
a6a53252 JY |
823 | rx_page_desc = rx_ring->rx_page_desc; |
824 | ||
825 | /* Init TPD Ring */ | |
826 | tx_ring->dma = roundup(adapter->ring_dma, 8); | |
827 | offset = tx_ring->dma - adapter->ring_dma; | |
43d620c8 | 828 | tx_ring->desc = adapter->ring_vir_addr + offset; |
a6a53252 JY |
829 | size = sizeof(struct atl1e_tx_buffer) * (tx_ring->count); |
830 | tx_ring->tx_buffer = kzalloc(size, GFP_KERNEL); | |
831 | if (tx_ring->tx_buffer == NULL) { | |
a6a53252 JY |
832 | err = -ENOMEM; |
833 | goto failed; | |
834 | } | |
835 | ||
836 | /* Init RXF-Pages */ | |
837 | offset += (sizeof(struct atl1e_tpd_desc) * tx_ring->count); | |
838 | offset = roundup(offset, 32); | |
839 | ||
840 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
841 | for (j = 0; j < AT_PAGE_NUM_PER_QUEUE; j++) { | |
842 | rx_page_desc[i].rx_page[j].dma = | |
843 | adapter->ring_dma + offset; | |
844 | rx_page_desc[i].rx_page[j].addr = | |
845 | adapter->ring_vir_addr + offset; | |
846 | offset += rx_ring->real_page_size; | |
847 | } | |
848 | } | |
849 | ||
850 | /* Init CMB dma address */ | |
851 | tx_ring->cmb_dma = adapter->ring_dma + offset; | |
43d620c8 | 852 | tx_ring->cmb = adapter->ring_vir_addr + offset; |
a6a53252 JY |
853 | offset += sizeof(u32); |
854 | ||
855 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
856 | for (j = 0; j < AT_PAGE_NUM_PER_QUEUE; j++) { | |
857 | rx_page_desc[i].rx_page[j].write_offset_dma = | |
858 | adapter->ring_dma + offset; | |
859 | rx_page_desc[i].rx_page[j].write_offset_addr = | |
860 | adapter->ring_vir_addr + offset; | |
861 | offset += sizeof(u32); | |
862 | } | |
863 | } | |
864 | ||
865 | if (unlikely(offset > adapter->ring_size)) { | |
ba211e3e JP |
866 | netdev_err(adapter->netdev, "offset(%d) > ring size(%d) !!\n", |
867 | offset, adapter->ring_size); | |
a6a53252 JY |
868 | err = -1; |
869 | goto failed; | |
870 | } | |
871 | ||
872 | return 0; | |
873 | failed: | |
874 | if (adapter->ring_vir_addr != NULL) { | |
85eb5bc3 CJ |
875 | dma_free_coherent(&pdev->dev, adapter->ring_size, |
876 | adapter->ring_vir_addr, adapter->ring_dma); | |
a6a53252 JY |
877 | adapter->ring_vir_addr = NULL; |
878 | } | |
879 | return err; | |
880 | } | |
881 | ||
64699336 | 882 | static inline void atl1e_configure_des_ring(struct atl1e_adapter *adapter) |
a6a53252 JY |
883 | { |
884 | ||
64699336 JP |
885 | struct atl1e_hw *hw = &adapter->hw; |
886 | struct atl1e_rx_ring *rx_ring = &adapter->rx_ring; | |
887 | struct atl1e_tx_ring *tx_ring = &adapter->tx_ring; | |
a6a53252 JY |
888 | struct atl1e_rx_page_desc *rx_page_desc = NULL; |
889 | int i, j; | |
890 | ||
891 | AT_WRITE_REG(hw, REG_DESC_BASE_ADDR_HI, | |
892 | (u32)((adapter->ring_dma & AT_DMA_HI_ADDR_MASK) >> 32)); | |
893 | AT_WRITE_REG(hw, REG_TPD_BASE_ADDR_LO, | |
894 | (u32)((tx_ring->dma) & AT_DMA_LO_ADDR_MASK)); | |
895 | AT_WRITE_REG(hw, REG_TPD_RING_SIZE, (u16)(tx_ring->count)); | |
896 | AT_WRITE_REG(hw, REG_HOST_TX_CMB_LO, | |
897 | (u32)((tx_ring->cmb_dma) & AT_DMA_LO_ADDR_MASK)); | |
898 | ||
899 | rx_page_desc = rx_ring->rx_page_desc; | |
900 | /* RXF Page Physical address / Page Length */ | |
901 | for (i = 0; i < AT_MAX_RECEIVE_QUEUE; i++) { | |
902 | AT_WRITE_REG(hw, atl1e_rx_page_hi_addr_regs[i], | |
903 | (u32)((adapter->ring_dma & | |
904 | AT_DMA_HI_ADDR_MASK) >> 32)); | |
905 | for (j = 0; j < AT_PAGE_NUM_PER_QUEUE; j++) { | |
906 | u32 page_phy_addr; | |
907 | u32 offset_phy_addr; | |
908 | ||
909 | page_phy_addr = rx_page_desc[i].rx_page[j].dma; | |
910 | offset_phy_addr = | |
911 | rx_page_desc[i].rx_page[j].write_offset_dma; | |
912 | ||
913 | AT_WRITE_REG(hw, atl1e_rx_page_lo_addr_regs[i][j], | |
914 | page_phy_addr & AT_DMA_LO_ADDR_MASK); | |
915 | AT_WRITE_REG(hw, atl1e_rx_page_write_offset_regs[i][j], | |
916 | offset_phy_addr & AT_DMA_LO_ADDR_MASK); | |
917 | AT_WRITE_REGB(hw, atl1e_rx_page_vld_regs[i][j], 1); | |
918 | } | |
919 | } | |
920 | /* Page Length */ | |
921 | AT_WRITE_REG(hw, REG_HOST_RXFPAGE_SIZE, rx_ring->page_size); | |
922 | /* Load all of base address above */ | |
923 | AT_WRITE_REG(hw, REG_LOAD_PTR, 1); | |
a6a53252 JY |
924 | } |
925 | ||
926 | static inline void atl1e_configure_tx(struct atl1e_adapter *adapter) | |
927 | { | |
64699336 | 928 | struct atl1e_hw *hw = &adapter->hw; |
a6a53252 JY |
929 | u32 dev_ctrl_data = 0; |
930 | u32 max_pay_load = 0; | |
931 | u32 jumbo_thresh = 0; | |
932 | u32 extra_size = 0; /* Jumbo frame threshold in QWORD unit */ | |
933 | ||
934 | /* configure TXQ param */ | |
935 | if (hw->nic_type != athr_l2e_revB) { | |
936 | extra_size = ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN; | |
937 | if (hw->max_frame_size <= 1500) { | |
938 | jumbo_thresh = hw->max_frame_size + extra_size; | |
939 | } else if (hw->max_frame_size < 6*1024) { | |
940 | jumbo_thresh = | |
941 | (hw->max_frame_size + extra_size) * 2 / 3; | |
942 | } else { | |
943 | jumbo_thresh = (hw->max_frame_size + extra_size) / 2; | |
944 | } | |
945 | AT_WRITE_REG(hw, REG_TX_EARLY_TH, (jumbo_thresh + 7) >> 3); | |
946 | } | |
947 | ||
948 | dev_ctrl_data = AT_READ_REG(hw, REG_DEVICE_CTRL); | |
949 | ||
950 | max_pay_load = ((dev_ctrl_data >> DEVICE_CTRL_MAX_PAYLOAD_SHIFT)) & | |
951 | DEVICE_CTRL_MAX_PAYLOAD_MASK; | |
952 | ||
81b504b8 | 953 | hw->dmaw_block = min_t(u32, max_pay_load, hw->dmaw_block); |
a6a53252 JY |
954 | |
955 | max_pay_load = ((dev_ctrl_data >> DEVICE_CTRL_MAX_RREQ_SZ_SHIFT)) & | |
956 | DEVICE_CTRL_MAX_RREQ_SZ_MASK; | |
81b504b8 | 957 | hw->dmar_block = min_t(u32, max_pay_load, hw->dmar_block); |
a6a53252 JY |
958 | |
959 | if (hw->nic_type != athr_l2e_revB) | |
960 | AT_WRITE_REGW(hw, REG_TXQ_CTRL + 2, | |
961 | atl1e_pay_load_size[hw->dmar_block]); | |
962 | /* enable TXQ */ | |
963 | AT_WRITE_REGW(hw, REG_TXQ_CTRL, | |
964 | (((u16)hw->tpd_burst & TXQ_CTRL_NUM_TPD_BURST_MASK) | |
965 | << TXQ_CTRL_NUM_TPD_BURST_SHIFT) | |
966 | | TXQ_CTRL_ENH_MODE | TXQ_CTRL_EN); | |
a6a53252 JY |
967 | } |
968 | ||
969 | static inline void atl1e_configure_rx(struct atl1e_adapter *adapter) | |
970 | { | |
64699336 | 971 | struct atl1e_hw *hw = &adapter->hw; |
a6a53252 JY |
972 | u32 rxf_len = 0; |
973 | u32 rxf_low = 0; | |
974 | u32 rxf_high = 0; | |
975 | u32 rxf_thresh_data = 0; | |
976 | u32 rxq_ctrl_data = 0; | |
977 | ||
978 | if (hw->nic_type != athr_l2e_revB) { | |
979 | AT_WRITE_REGW(hw, REG_RXQ_JMBOSZ_RRDTIM, | |
980 | (u16)((hw->rx_jumbo_th & RXQ_JMBOSZ_TH_MASK) << | |
981 | RXQ_JMBOSZ_TH_SHIFT | | |
982 | (1 & RXQ_JMBO_LKAH_MASK) << | |
983 | RXQ_JMBO_LKAH_SHIFT)); | |
984 | ||
985 | rxf_len = AT_READ_REG(hw, REG_SRAM_RXF_LEN); | |
986 | rxf_high = rxf_len * 4 / 5; | |
987 | rxf_low = rxf_len / 5; | |
988 | rxf_thresh_data = ((rxf_high & RXQ_RXF_PAUSE_TH_HI_MASK) | |
989 | << RXQ_RXF_PAUSE_TH_HI_SHIFT) | | |
990 | ((rxf_low & RXQ_RXF_PAUSE_TH_LO_MASK) | |
991 | << RXQ_RXF_PAUSE_TH_LO_SHIFT); | |
992 | ||
993 | AT_WRITE_REG(hw, REG_RXQ_RXF_PAUSE_THRESH, rxf_thresh_data); | |
994 | } | |
995 | ||
996 | /* RRS */ | |
997 | AT_WRITE_REG(hw, REG_IDT_TABLE, hw->indirect_tab); | |
998 | AT_WRITE_REG(hw, REG_BASE_CPU_NUMBER, hw->base_cpu); | |
999 | ||
1000 | if (hw->rrs_type & atl1e_rrs_ipv4) | |
1001 | rxq_ctrl_data |= RXQ_CTRL_HASH_TYPE_IPV4; | |
1002 | ||
1003 | if (hw->rrs_type & atl1e_rrs_ipv4_tcp) | |
1004 | rxq_ctrl_data |= RXQ_CTRL_HASH_TYPE_IPV4_TCP; | |
1005 | ||
1006 | if (hw->rrs_type & atl1e_rrs_ipv6) | |
1007 | rxq_ctrl_data |= RXQ_CTRL_HASH_TYPE_IPV6; | |
1008 | ||
1009 | if (hw->rrs_type & atl1e_rrs_ipv6_tcp) | |
1010 | rxq_ctrl_data |= RXQ_CTRL_HASH_TYPE_IPV6_TCP; | |
1011 | ||
1012 | if (hw->rrs_type != atl1e_rrs_disable) | |
1013 | rxq_ctrl_data |= | |
1014 | (RXQ_CTRL_HASH_ENABLE | RXQ_CTRL_RSS_MODE_MQUESINT); | |
1015 | ||
1016 | rxq_ctrl_data |= RXQ_CTRL_IPV6_XSUM_VERIFY_EN | RXQ_CTRL_PBA_ALIGN_32 | | |
1017 | RXQ_CTRL_CUT_THRU_EN | RXQ_CTRL_EN; | |
1018 | ||
1019 | AT_WRITE_REG(hw, REG_RXQ_CTRL, rxq_ctrl_data); | |
a6a53252 JY |
1020 | } |
1021 | ||
1022 | static inline void atl1e_configure_dma(struct atl1e_adapter *adapter) | |
1023 | { | |
1024 | struct atl1e_hw *hw = &adapter->hw; | |
1025 | u32 dma_ctrl_data = 0; | |
1026 | ||
1027 | dma_ctrl_data = DMA_CTRL_RXCMB_EN; | |
1028 | dma_ctrl_data |= (((u32)hw->dmar_block) & DMA_CTRL_DMAR_BURST_LEN_MASK) | |
1029 | << DMA_CTRL_DMAR_BURST_LEN_SHIFT; | |
1030 | dma_ctrl_data |= (((u32)hw->dmaw_block) & DMA_CTRL_DMAW_BURST_LEN_MASK) | |
1031 | << DMA_CTRL_DMAW_BURST_LEN_SHIFT; | |
1032 | dma_ctrl_data |= DMA_CTRL_DMAR_REQ_PRI | DMA_CTRL_DMAR_OUT_ORDER; | |
1033 | dma_ctrl_data |= (((u32)hw->dmar_dly_cnt) & DMA_CTRL_DMAR_DLY_CNT_MASK) | |
1034 | << DMA_CTRL_DMAR_DLY_CNT_SHIFT; | |
1035 | dma_ctrl_data |= (((u32)hw->dmaw_dly_cnt) & DMA_CTRL_DMAW_DLY_CNT_MASK) | |
1036 | << DMA_CTRL_DMAW_DLY_CNT_SHIFT; | |
1037 | ||
1038 | AT_WRITE_REG(hw, REG_DMA_CTRL, dma_ctrl_data); | |
a6a53252 JY |
1039 | } |
1040 | ||
e6ca2328 | 1041 | static void atl1e_setup_mac_ctrl(struct atl1e_adapter *adapter) |
a6a53252 JY |
1042 | { |
1043 | u32 value; | |
1044 | struct atl1e_hw *hw = &adapter->hw; | |
1045 | struct net_device *netdev = adapter->netdev; | |
1046 | ||
1047 | /* Config MAC CTRL Register */ | |
1048 | value = MAC_CTRL_TX_EN | | |
1049 | MAC_CTRL_RX_EN ; | |
1050 | ||
1051 | if (FULL_DUPLEX == adapter->link_duplex) | |
1052 | value |= MAC_CTRL_DUPLX; | |
1053 | ||
1054 | value |= ((u32)((SPEED_1000 == adapter->link_speed) ? | |
1055 | MAC_CTRL_SPEED_1000 : MAC_CTRL_SPEED_10_100) << | |
1056 | MAC_CTRL_SPEED_SHIFT); | |
1057 | value |= (MAC_CTRL_TX_FLOW | MAC_CTRL_RX_FLOW); | |
1058 | ||
1059 | value |= (MAC_CTRL_ADD_CRC | MAC_CTRL_PAD); | |
1060 | value |= (((u32)adapter->hw.preamble_len & | |
1061 | MAC_CTRL_PRMLEN_MASK) << MAC_CTRL_PRMLEN_SHIFT); | |
1062 | ||
2707fffc | 1063 | __atl1e_vlan_mode(netdev->features, &value); |
a6a53252 JY |
1064 | |
1065 | value |= MAC_CTRL_BC_EN; | |
1066 | if (netdev->flags & IFF_PROMISC) | |
1067 | value |= MAC_CTRL_PROMIS_EN; | |
1068 | if (netdev->flags & IFF_ALLMULTI) | |
1069 | value |= MAC_CTRL_MC_ALL_EN; | |
40dc9ab2 AM |
1070 | if (netdev->features & NETIF_F_RXALL) |
1071 | value |= MAC_CTRL_DBG; | |
a6a53252 JY |
1072 | AT_WRITE_REG(hw, REG_MAC_CTRL, value); |
1073 | } | |
1074 | ||
49ce9c2c | 1075 | /** |
a6a53252 JY |
1076 | * atl1e_configure - Configure Transmit&Receive Unit after Reset |
1077 | * @adapter: board private structure | |
1078 | * | |
1079 | * Configure the Tx /Rx unit of the MAC after a reset. | |
1080 | */ | |
1081 | static int atl1e_configure(struct atl1e_adapter *adapter) | |
1082 | { | |
1083 | struct atl1e_hw *hw = &adapter->hw; | |
a6a53252 JY |
1084 | |
1085 | u32 intr_status_data = 0; | |
1086 | ||
1087 | /* clear interrupt status */ | |
1088 | AT_WRITE_REG(hw, REG_ISR, ~0); | |
1089 | ||
1090 | /* 1. set MAC Address */ | |
1091 | atl1e_hw_set_mac_addr(hw); | |
1092 | ||
1093 | /* 2. Init the Multicast HASH table done by set_muti */ | |
1094 | ||
1095 | /* 3. Clear any WOL status */ | |
1096 | AT_WRITE_REG(hw, REG_WOL_CTRL, 0); | |
1097 | ||
1098 | /* 4. Descripter Ring BaseMem/Length/Read ptr/Write ptr | |
1099 | * TPD Ring/SMB/RXF0 Page CMBs, they use the same | |
1100 | * High 32bits memory */ | |
1101 | atl1e_configure_des_ring(adapter); | |
1102 | ||
1103 | /* 5. set Interrupt Moderator Timer */ | |
1104 | AT_WRITE_REGW(hw, REG_IRQ_MODU_TIMER_INIT, hw->imt); | |
1105 | AT_WRITE_REGW(hw, REG_IRQ_MODU_TIMER2_INIT, hw->imt); | |
1106 | AT_WRITE_REG(hw, REG_MASTER_CTRL, MASTER_CTRL_LED_MODE | | |
1107 | MASTER_CTRL_ITIMER_EN | MASTER_CTRL_ITIMER2_EN); | |
1108 | ||
1109 | /* 6. rx/tx threshold to trig interrupt */ | |
1110 | AT_WRITE_REGW(hw, REG_TRIG_RRD_THRESH, hw->rrd_thresh); | |
1111 | AT_WRITE_REGW(hw, REG_TRIG_TPD_THRESH, hw->tpd_thresh); | |
1112 | AT_WRITE_REGW(hw, REG_TRIG_RXTIMER, hw->rx_count_down); | |
1113 | AT_WRITE_REGW(hw, REG_TRIG_TXTIMER, hw->tx_count_down); | |
1114 | ||
1115 | /* 7. set Interrupt Clear Timer */ | |
1116 | AT_WRITE_REGW(hw, REG_CMBDISDMA_TIMER, hw->ict); | |
1117 | ||
1118 | /* 8. set MTU */ | |
1119 | AT_WRITE_REG(hw, REG_MTU, hw->max_frame_size + ETH_HLEN + | |
1120 | VLAN_HLEN + ETH_FCS_LEN); | |
1121 | ||
1122 | /* 9. config TXQ early tx threshold */ | |
1123 | atl1e_configure_tx(adapter); | |
1124 | ||
1125 | /* 10. config RXQ */ | |
1126 | atl1e_configure_rx(adapter); | |
1127 | ||
1128 | /* 11. config DMA Engine */ | |
1129 | atl1e_configure_dma(adapter); | |
1130 | ||
1131 | /* 12. smb timer to trig interrupt */ | |
1132 | AT_WRITE_REG(hw, REG_SMB_STAT_TIMER, hw->smb_timer); | |
1133 | ||
1134 | intr_status_data = AT_READ_REG(hw, REG_ISR); | |
1135 | if (unlikely((intr_status_data & ISR_PHY_LINKDOWN) != 0)) { | |
ba211e3e JP |
1136 | netdev_err(adapter->netdev, |
1137 | "atl1e_configure failed, PCIE phy link down\n"); | |
a6a53252 JY |
1138 | return -1; |
1139 | } | |
1140 | ||
1141 | AT_WRITE_REG(hw, REG_ISR, 0x7fffffff); | |
1142 | return 0; | |
1143 | } | |
1144 | ||
49ce9c2c | 1145 | /** |
a6a53252 JY |
1146 | * atl1e_get_stats - Get System Network Statistics |
1147 | * @netdev: network interface device structure | |
1148 | * | |
1149 | * Returns the address of the device statistics structure. | |
1150 | * The statistics are actually updated from the timer callback. | |
1151 | */ | |
1152 | static struct net_device_stats *atl1e_get_stats(struct net_device *netdev) | |
1153 | { | |
1154 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
1155 | struct atl1e_hw_stats *hw_stats = &adapter->hw_stats; | |
d3f65f7c | 1156 | struct net_device_stats *net_stats = &netdev->stats; |
a6a53252 | 1157 | |
a6a53252 JY |
1158 | net_stats->rx_bytes = hw_stats->rx_byte_cnt; |
1159 | net_stats->tx_bytes = hw_stats->tx_byte_cnt; | |
1160 | net_stats->multicast = hw_stats->rx_mcast; | |
1161 | net_stats->collisions = hw_stats->tx_1_col + | |
fb3a42fc SD |
1162 | hw_stats->tx_2_col + |
1163 | hw_stats->tx_late_col + | |
1164 | hw_stats->tx_abort_col; | |
1165 | ||
1166 | net_stats->rx_errors = hw_stats->rx_frag + | |
1167 | hw_stats->rx_fcs_err + | |
1168 | hw_stats->rx_len_err + | |
1169 | hw_stats->rx_sz_ov + | |
1170 | hw_stats->rx_rrd_ov + | |
1171 | hw_stats->rx_align_err + | |
1172 | hw_stats->rx_rxf_ov; | |
a6a53252 | 1173 | |
a6a53252 JY |
1174 | net_stats->rx_fifo_errors = hw_stats->rx_rxf_ov; |
1175 | net_stats->rx_length_errors = hw_stats->rx_len_err; | |
1176 | net_stats->rx_crc_errors = hw_stats->rx_fcs_err; | |
1177 | net_stats->rx_frame_errors = hw_stats->rx_align_err; | |
fb3a42fc | 1178 | net_stats->rx_dropped = hw_stats->rx_rrd_ov; |
a6a53252 | 1179 | |
fb3a42fc SD |
1180 | net_stats->tx_errors = hw_stats->tx_late_col + |
1181 | hw_stats->tx_abort_col + | |
1182 | hw_stats->tx_underrun + | |
1183 | hw_stats->tx_trunc; | |
a6a53252 | 1184 | |
a6a53252 JY |
1185 | net_stats->tx_fifo_errors = hw_stats->tx_underrun; |
1186 | net_stats->tx_aborted_errors = hw_stats->tx_abort_col; | |
1187 | net_stats->tx_window_errors = hw_stats->tx_late_col; | |
1188 | ||
fb3a42fc SD |
1189 | net_stats->rx_packets = hw_stats->rx_ok + net_stats->rx_errors; |
1190 | net_stats->tx_packets = hw_stats->tx_ok + net_stats->tx_errors; | |
1191 | ||
d3f65f7c | 1192 | return net_stats; |
a6a53252 JY |
1193 | } |
1194 | ||
1195 | static void atl1e_update_hw_stats(struct atl1e_adapter *adapter) | |
1196 | { | |
1197 | u16 hw_reg_addr = 0; | |
1198 | unsigned long *stats_item = NULL; | |
1199 | ||
1200 | /* update rx status */ | |
1201 | hw_reg_addr = REG_MAC_RX_STATUS_BIN; | |
1202 | stats_item = &adapter->hw_stats.rx_ok; | |
1203 | while (hw_reg_addr <= REG_MAC_RX_STATUS_END) { | |
1204 | *stats_item += AT_READ_REG(&adapter->hw, hw_reg_addr); | |
1205 | stats_item++; | |
1206 | hw_reg_addr += 4; | |
1207 | } | |
1208 | /* update tx status */ | |
1209 | hw_reg_addr = REG_MAC_TX_STATUS_BIN; | |
1210 | stats_item = &adapter->hw_stats.tx_ok; | |
1211 | while (hw_reg_addr <= REG_MAC_TX_STATUS_END) { | |
1212 | *stats_item += AT_READ_REG(&adapter->hw, hw_reg_addr); | |
1213 | stats_item++; | |
1214 | hw_reg_addr += 4; | |
1215 | } | |
1216 | } | |
1217 | ||
1218 | static inline void atl1e_clear_phy_int(struct atl1e_adapter *adapter) | |
1219 | { | |
1220 | u16 phy_data; | |
1221 | ||
1222 | spin_lock(&adapter->mdio_lock); | |
1223 | atl1e_read_phy_reg(&adapter->hw, MII_INT_STATUS, &phy_data); | |
1224 | spin_unlock(&adapter->mdio_lock); | |
1225 | } | |
1226 | ||
1227 | static bool atl1e_clean_tx_irq(struct atl1e_adapter *adapter) | |
1228 | { | |
64699336 | 1229 | struct atl1e_tx_ring *tx_ring = &adapter->tx_ring; |
a6a53252 JY |
1230 | struct atl1e_tx_buffer *tx_buffer = NULL; |
1231 | u16 hw_next_to_clean = AT_READ_REGW(&adapter->hw, REG_TPD_CONS_IDX); | |
1232 | u16 next_to_clean = atomic_read(&tx_ring->next_to_clean); | |
1233 | ||
1234 | while (next_to_clean != hw_next_to_clean) { | |
1235 | tx_buffer = &tx_ring->tx_buffer[next_to_clean]; | |
1236 | if (tx_buffer->dma) { | |
03f18991 | 1237 | if (tx_buffer->flags & ATL1E_TX_PCIMAP_SINGLE) |
85eb5bc3 CJ |
1238 | dma_unmap_single(&adapter->pdev->dev, |
1239 | tx_buffer->dma, | |
1240 | tx_buffer->length, | |
1241 | DMA_TO_DEVICE); | |
03f18991 | 1242 | else if (tx_buffer->flags & ATL1E_TX_PCIMAP_PAGE) |
85eb5bc3 CJ |
1243 | dma_unmap_page(&adapter->pdev->dev, |
1244 | tx_buffer->dma, | |
1245 | tx_buffer->length, | |
1246 | DMA_TO_DEVICE); | |
a6a53252 JY |
1247 | tx_buffer->dma = 0; |
1248 | } | |
1249 | ||
1250 | if (tx_buffer->skb) { | |
d270f67d | 1251 | dev_consume_skb_irq(tx_buffer->skb); |
a6a53252 JY |
1252 | tx_buffer->skb = NULL; |
1253 | } | |
1254 | ||
1255 | if (++next_to_clean == tx_ring->count) | |
1256 | next_to_clean = 0; | |
1257 | } | |
1258 | ||
1259 | atomic_set(&tx_ring->next_to_clean, next_to_clean); | |
1260 | ||
1261 | if (netif_queue_stopped(adapter->netdev) && | |
1262 | netif_carrier_ok(adapter->netdev)) { | |
1263 | netif_wake_queue(adapter->netdev); | |
1264 | } | |
1265 | ||
1266 | return true; | |
1267 | } | |
1268 | ||
49ce9c2c | 1269 | /** |
a6a53252 JY |
1270 | * atl1e_intr - Interrupt Handler |
1271 | * @irq: interrupt number | |
1272 | * @data: pointer to a network interface device structure | |
a6a53252 JY |
1273 | */ |
1274 | static irqreturn_t atl1e_intr(int irq, void *data) | |
1275 | { | |
1276 | struct net_device *netdev = data; | |
1277 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
a6a53252 JY |
1278 | struct atl1e_hw *hw = &adapter->hw; |
1279 | int max_ints = AT_MAX_INT_WORK; | |
1280 | int handled = IRQ_NONE; | |
1281 | u32 status; | |
1282 | ||
1283 | do { | |
1284 | status = AT_READ_REG(hw, REG_ISR); | |
1285 | if ((status & IMR_NORMAL_MASK) == 0 || | |
1286 | (status & ISR_DIS_INT) != 0) { | |
1287 | if (max_ints != AT_MAX_INT_WORK) | |
1288 | handled = IRQ_HANDLED; | |
1289 | break; | |
1290 | } | |
1291 | /* link event */ | |
1292 | if (status & ISR_GPHY) | |
1293 | atl1e_clear_phy_int(adapter); | |
1294 | /* Ack ISR */ | |
1295 | AT_WRITE_REG(hw, REG_ISR, status | ISR_DIS_INT); | |
1296 | ||
1297 | handled = IRQ_HANDLED; | |
1298 | /* check if PCIE PHY Link down */ | |
1299 | if (status & ISR_PHY_LINKDOWN) { | |
ba211e3e JP |
1300 | netdev_err(adapter->netdev, |
1301 | "pcie phy linkdown %x\n", status); | |
a6a53252 JY |
1302 | if (netif_running(adapter->netdev)) { |
1303 | /* reset MAC */ | |
1304 | atl1e_irq_reset(adapter); | |
1305 | schedule_work(&adapter->reset_task); | |
1306 | break; | |
1307 | } | |
1308 | } | |
1309 | ||
1310 | /* check if DMA read/write error */ | |
1311 | if (status & (ISR_DMAR_TO_RST | ISR_DMAW_TO_RST)) { | |
ba211e3e JP |
1312 | netdev_err(adapter->netdev, |
1313 | "PCIE DMA RW error (status = 0x%x)\n", | |
1314 | status); | |
a6a53252 JY |
1315 | atl1e_irq_reset(adapter); |
1316 | schedule_work(&adapter->reset_task); | |
1317 | break; | |
1318 | } | |
1319 | ||
1320 | if (status & ISR_SMB) | |
1321 | atl1e_update_hw_stats(adapter); | |
1322 | ||
1323 | /* link event */ | |
1324 | if (status & (ISR_GPHY | ISR_MANUAL)) { | |
d3f65f7c | 1325 | netdev->stats.tx_carrier_errors++; |
a6a53252 JY |
1326 | atl1e_link_chg_event(adapter); |
1327 | break; | |
1328 | } | |
1329 | ||
1330 | /* transmit event */ | |
1331 | if (status & ISR_TX_EVENT) | |
1332 | atl1e_clean_tx_irq(adapter); | |
1333 | ||
1334 | if (status & ISR_RX_EVENT) { | |
1335 | /* | |
1336 | * disable rx interrupts, without | |
1337 | * the synchronize_irq bit | |
1338 | */ | |
1339 | AT_WRITE_REG(hw, REG_IMR, | |
1340 | IMR_NORMAL_MASK & ~ISR_RX_EVENT); | |
1341 | AT_WRITE_FLUSH(hw); | |
288379f0 | 1342 | if (likely(napi_schedule_prep( |
a6a53252 | 1343 | &adapter->napi))) |
288379f0 | 1344 | __napi_schedule(&adapter->napi); |
a6a53252 JY |
1345 | } |
1346 | } while (--max_ints > 0); | |
1347 | /* re-enable Interrupt*/ | |
1348 | AT_WRITE_REG(&adapter->hw, REG_ISR, 0); | |
1349 | ||
1350 | return handled; | |
1351 | } | |
1352 | ||
1353 | static inline void atl1e_rx_checksum(struct atl1e_adapter *adapter, | |
1354 | struct sk_buff *skb, struct atl1e_recv_ret_status *prrs) | |
1355 | { | |
1356 | u8 *packet = (u8 *)(prrs + 1); | |
1357 | struct iphdr *iph; | |
1358 | u16 head_len = ETH_HLEN; | |
1359 | u16 pkt_flags; | |
1360 | u16 err_flags; | |
1361 | ||
bc8acf2c | 1362 | skb_checksum_none_assert(skb); |
a6a53252 JY |
1363 | pkt_flags = prrs->pkt_flag; |
1364 | err_flags = prrs->err_flag; | |
1365 | if (((pkt_flags & RRS_IS_IPV4) || (pkt_flags & RRS_IS_IPV6)) && | |
1366 | ((pkt_flags & RRS_IS_TCP) || (pkt_flags & RRS_IS_UDP))) { | |
1367 | if (pkt_flags & RRS_IS_IPV4) { | |
1368 | if (pkt_flags & RRS_IS_802_3) | |
1369 | head_len += 8; | |
1370 | iph = (struct iphdr *) (packet + head_len); | |
1371 | if (iph->frag_off != 0 && !(pkt_flags & RRS_IS_IP_DF)) | |
1372 | goto hw_xsum; | |
1373 | } | |
1374 | if (!(err_flags & (RRS_ERR_IP_CSUM | RRS_ERR_L4_CSUM))) { | |
1375 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
1376 | return; | |
1377 | } | |
1378 | } | |
1379 | ||
1380 | hw_xsum : | |
1381 | return; | |
1382 | } | |
1383 | ||
1384 | static struct atl1e_rx_page *atl1e_get_rx_page(struct atl1e_adapter *adapter, | |
1385 | u8 que) | |
1386 | { | |
1387 | struct atl1e_rx_page_desc *rx_page_desc = | |
1388 | (struct atl1e_rx_page_desc *) adapter->rx_ring.rx_page_desc; | |
1389 | u8 rx_using = rx_page_desc[que].rx_using; | |
1390 | ||
64699336 | 1391 | return &(rx_page_desc[que].rx_page[rx_using]); |
a6a53252 JY |
1392 | } |
1393 | ||
1394 | static void atl1e_clean_rx_irq(struct atl1e_adapter *adapter, u8 que, | |
1395 | int *work_done, int work_to_do) | |
1396 | { | |
a6a53252 | 1397 | struct net_device *netdev = adapter->netdev; |
64699336 | 1398 | struct atl1e_rx_ring *rx_ring = &adapter->rx_ring; |
a6a53252 JY |
1399 | struct atl1e_rx_page_desc *rx_page_desc = |
1400 | (struct atl1e_rx_page_desc *) rx_ring->rx_page_desc; | |
1401 | struct sk_buff *skb = NULL; | |
1402 | struct atl1e_rx_page *rx_page = atl1e_get_rx_page(adapter, que); | |
1403 | u32 packet_size, write_offset; | |
1404 | struct atl1e_recv_ret_status *prrs; | |
1405 | ||
1406 | write_offset = *(rx_page->write_offset_addr); | |
1407 | if (likely(rx_page->read_offset < write_offset)) { | |
1408 | do { | |
1409 | if (*work_done >= work_to_do) | |
1410 | break; | |
1411 | (*work_done)++; | |
1412 | /* get new packet's rrs */ | |
1413 | prrs = (struct atl1e_recv_ret_status *) (rx_page->addr + | |
1414 | rx_page->read_offset); | |
1415 | /* check sequence number */ | |
1416 | if (prrs->seq_num != rx_page_desc[que].rx_nxseq) { | |
ba211e3e JP |
1417 | netdev_err(netdev, |
1418 | "rx sequence number error (rx=%d) (expect=%d)\n", | |
1419 | prrs->seq_num, | |
1420 | rx_page_desc[que].rx_nxseq); | |
a6a53252 JY |
1421 | rx_page_desc[que].rx_nxseq++; |
1422 | /* just for debug use */ | |
1423 | AT_WRITE_REG(&adapter->hw, REG_DEBUG_DATA0, | |
1424 | (((u32)prrs->seq_num) << 16) | | |
1425 | rx_page_desc[que].rx_nxseq); | |
1426 | goto fatal_err; | |
1427 | } | |
1428 | rx_page_desc[que].rx_nxseq++; | |
1429 | ||
1430 | /* error packet */ | |
40dc9ab2 AM |
1431 | if ((prrs->pkt_flag & RRS_IS_ERR_FRAME) && |
1432 | !(netdev->features & NETIF_F_RXALL)) { | |
a6a53252 JY |
1433 | if (prrs->err_flag & (RRS_ERR_BAD_CRC | |
1434 | RRS_ERR_DRIBBLE | RRS_ERR_CODE | | |
1435 | RRS_ERR_TRUNC)) { | |
1436 | /* hardware error, discard this packet*/ | |
ba211e3e JP |
1437 | netdev_err(netdev, |
1438 | "rx packet desc error %x\n", | |
1439 | *((u32 *)prrs + 1)); | |
a6a53252 JY |
1440 | goto skip_pkt; |
1441 | } | |
1442 | } | |
1443 | ||
1444 | packet_size = ((prrs->word1 >> RRS_PKT_SIZE_SHIFT) & | |
40dc9ab2 AM |
1445 | RRS_PKT_SIZE_MASK); |
1446 | if (likely(!(netdev->features & NETIF_F_RXFCS))) | |
1447 | packet_size -= 4; /* CRC */ | |
1448 | ||
89d71a66 | 1449 | skb = netdev_alloc_skb_ip_align(netdev, packet_size); |
720a43ef | 1450 | if (skb == NULL) |
a6a53252 | 1451 | goto skip_pkt; |
720a43ef | 1452 | |
a6a53252 JY |
1453 | memcpy(skb->data, (u8 *)(prrs + 1), packet_size); |
1454 | skb_put(skb, packet_size); | |
1455 | skb->protocol = eth_type_trans(skb, netdev); | |
1456 | atl1e_rx_checksum(adapter, skb, prrs); | |
1457 | ||
2707fffc | 1458 | if (prrs->pkt_flag & RRS_IS_VLAN_TAG) { |
a6a53252 JY |
1459 | u16 vlan_tag = (prrs->vtag >> 4) | |
1460 | ((prrs->vtag & 7) << 13) | | |
1461 | ((prrs->vtag & 8) << 9); | |
ba211e3e JP |
1462 | netdev_dbg(netdev, |
1463 | "RXD VLAN TAG<RRD>=0x%04x\n", | |
1464 | prrs->vtag); | |
86a9bad3 | 1465 | __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlan_tag); |
a6a53252 | 1466 | } |
c45f8e10 | 1467 | napi_gro_receive(&adapter->napi, skb); |
a6a53252 | 1468 | |
a6a53252 JY |
1469 | skip_pkt: |
1470 | /* skip current packet whether it's ok or not. */ | |
1471 | rx_page->read_offset += | |
1472 | (((u32)((prrs->word1 >> RRS_PKT_SIZE_SHIFT) & | |
1473 | RRS_PKT_SIZE_MASK) + | |
1474 | sizeof(struct atl1e_recv_ret_status) + 31) & | |
1475 | 0xFFFFFFE0); | |
1476 | ||
1477 | if (rx_page->read_offset >= rx_ring->page_size) { | |
1478 | /* mark this page clean */ | |
1479 | u16 reg_addr; | |
1480 | u8 rx_using; | |
1481 | ||
1482 | rx_page->read_offset = | |
1483 | *(rx_page->write_offset_addr) = 0; | |
1484 | rx_using = rx_page_desc[que].rx_using; | |
1485 | reg_addr = | |
1486 | atl1e_rx_page_vld_regs[que][rx_using]; | |
1487 | AT_WRITE_REGB(&adapter->hw, reg_addr, 1); | |
1488 | rx_page_desc[que].rx_using ^= 1; | |
1489 | rx_page = atl1e_get_rx_page(adapter, que); | |
1490 | } | |
1491 | write_offset = *(rx_page->write_offset_addr); | |
1492 | } while (rx_page->read_offset < write_offset); | |
1493 | } | |
1494 | ||
1495 | return; | |
1496 | ||
1497 | fatal_err: | |
1498 | if (!test_bit(__AT_DOWN, &adapter->flags)) | |
1499 | schedule_work(&adapter->reset_task); | |
1500 | } | |
1501 | ||
49ce9c2c | 1502 | /** |
a6a53252 | 1503 | * atl1e_clean - NAPI Rx polling callback |
d0ea5cbd JB |
1504 | * @napi: napi info |
1505 | * @budget: number of packets to clean | |
a6a53252 JY |
1506 | */ |
1507 | static int atl1e_clean(struct napi_struct *napi, int budget) | |
1508 | { | |
1509 | struct atl1e_adapter *adapter = | |
1510 | container_of(napi, struct atl1e_adapter, napi); | |
a6a53252 JY |
1511 | u32 imr_data; |
1512 | int work_done = 0; | |
1513 | ||
1514 | /* Keep link state information with original netdev */ | |
1515 | if (!netif_carrier_ok(adapter->netdev)) | |
1516 | goto quit_polling; | |
1517 | ||
1518 | atl1e_clean_rx_irq(adapter, 0, &work_done, budget); | |
1519 | ||
1520 | /* If no Tx and not enough Rx work done, exit the polling mode */ | |
1521 | if (work_done < budget) { | |
1522 | quit_polling: | |
6ad20165 | 1523 | napi_complete_done(napi, work_done); |
a6a53252 JY |
1524 | imr_data = AT_READ_REG(&adapter->hw, REG_IMR); |
1525 | AT_WRITE_REG(&adapter->hw, REG_IMR, imr_data | ISR_RX_EVENT); | |
1526 | /* test debug */ | |
1527 | if (test_bit(__AT_DOWN, &adapter->flags)) { | |
1528 | atomic_dec(&adapter->irq_sem); | |
ba211e3e JP |
1529 | netdev_err(adapter->netdev, |
1530 | "atl1e_clean is called when AT_DOWN\n"); | |
a6a53252 JY |
1531 | } |
1532 | /* reenable RX intr */ | |
1533 | /*atl1e_irq_enable(adapter); */ | |
1534 | ||
1535 | } | |
1536 | return work_done; | |
1537 | } | |
1538 | ||
1539 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
1540 | ||
1541 | /* | |
1542 | * Polling 'interrupt' - used by things like netconsole to send skbs | |
1543 | * without having to re-enable interrupts. It's not called while | |
1544 | * the interrupt routine is executing. | |
1545 | */ | |
1546 | static void atl1e_netpoll(struct net_device *netdev) | |
1547 | { | |
1548 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
1549 | ||
1550 | disable_irq(adapter->pdev->irq); | |
1551 | atl1e_intr(adapter->pdev->irq, netdev); | |
1552 | enable_irq(adapter->pdev->irq); | |
1553 | } | |
1554 | #endif | |
1555 | ||
1556 | static inline u16 atl1e_tpd_avail(struct atl1e_adapter *adapter) | |
1557 | { | |
1558 | struct atl1e_tx_ring *tx_ring = &adapter->tx_ring; | |
1559 | u16 next_to_use = 0; | |
1560 | u16 next_to_clean = 0; | |
1561 | ||
1562 | next_to_clean = atomic_read(&tx_ring->next_to_clean); | |
1563 | next_to_use = tx_ring->next_to_use; | |
1564 | ||
1565 | return (u16)(next_to_clean > next_to_use) ? | |
1566 | (next_to_clean - next_to_use - 1) : | |
1567 | (tx_ring->count + next_to_clean - next_to_use - 1); | |
1568 | } | |
1569 | ||
1570 | /* | |
1571 | * get next usable tpd | |
1572 | * Note: should call atl1e_tdp_avail to make sure | |
1573 | * there is enough tpd to use | |
1574 | */ | |
1575 | static struct atl1e_tpd_desc *atl1e_get_tpd(struct atl1e_adapter *adapter) | |
1576 | { | |
1577 | struct atl1e_tx_ring *tx_ring = &adapter->tx_ring; | |
1578 | u16 next_to_use = 0; | |
1579 | ||
1580 | next_to_use = tx_ring->next_to_use; | |
1581 | if (++tx_ring->next_to_use == tx_ring->count) | |
1582 | tx_ring->next_to_use = 0; | |
1583 | ||
1584 | memset(&tx_ring->desc[next_to_use], 0, sizeof(struct atl1e_tpd_desc)); | |
64699336 | 1585 | return &tx_ring->desc[next_to_use]; |
a6a53252 JY |
1586 | } |
1587 | ||
1588 | static struct atl1e_tx_buffer * | |
1589 | atl1e_get_tx_buffer(struct atl1e_adapter *adapter, struct atl1e_tpd_desc *tpd) | |
1590 | { | |
1591 | struct atl1e_tx_ring *tx_ring = &adapter->tx_ring; | |
1592 | ||
1593 | return &tx_ring->tx_buffer[tpd - tx_ring->desc]; | |
1594 | } | |
1595 | ||
1596 | /* Calculate the transmit packet descript needed*/ | |
1597 | static u16 atl1e_cal_tdp_req(const struct sk_buff *skb) | |
1598 | { | |
1599 | int i = 0; | |
1600 | u16 tpd_req = 1; | |
1601 | u16 fg_size = 0; | |
1602 | u16 proto_hdr_len = 0; | |
1603 | ||
1604 | for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { | |
9e903e08 | 1605 | fg_size = skb_frag_size(&skb_shinfo(skb)->frags[i]); |
a6a53252 JY |
1606 | tpd_req += ((fg_size + MAX_TX_BUF_LEN - 1) >> MAX_TX_BUF_SHIFT); |
1607 | } | |
1608 | ||
1609 | if (skb_is_gso(skb)) { | |
17d0cdfa | 1610 | if (skb->protocol == htons(ETH_P_IP) || |
a6a53252 JY |
1611 | (skb_shinfo(skb)->gso_type == SKB_GSO_TCPV6)) { |
1612 | proto_hdr_len = skb_transport_offset(skb) + | |
1613 | tcp_hdrlen(skb); | |
1614 | if (proto_hdr_len < skb_headlen(skb)) { | |
1615 | tpd_req += ((skb_headlen(skb) - proto_hdr_len + | |
1616 | MAX_TX_BUF_LEN - 1) >> | |
1617 | MAX_TX_BUF_SHIFT); | |
1618 | } | |
1619 | } | |
1620 | ||
1621 | } | |
1622 | return tpd_req; | |
1623 | } | |
1624 | ||
1625 | static int atl1e_tso_csum(struct atl1e_adapter *adapter, | |
1626 | struct sk_buff *skb, struct atl1e_tpd_desc *tpd) | |
1627 | { | |
d8e4435e | 1628 | unsigned short offload_type; |
a6a53252 JY |
1629 | u8 hdr_len; |
1630 | u32 real_len; | |
a6a53252 JY |
1631 | |
1632 | if (skb_is_gso(skb)) { | |
d8e4435e | 1633 | int err; |
1634 | ||
1635 | err = skb_cow_head(skb, 0); | |
1636 | if (err < 0) | |
1637 | return err; | |
1638 | ||
a6a53252 JY |
1639 | offload_type = skb_shinfo(skb)->gso_type; |
1640 | ||
1641 | if (offload_type & SKB_GSO_TCPV4) { | |
1642 | real_len = (((unsigned char *)ip_hdr(skb) - skb->data) | |
1643 | + ntohs(ip_hdr(skb)->tot_len)); | |
1644 | ||
1645 | if (real_len < skb->len) | |
1646 | pskb_trim(skb, real_len); | |
1647 | ||
1648 | hdr_len = (skb_transport_offset(skb) + tcp_hdrlen(skb)); | |
1649 | if (unlikely(skb->len == hdr_len)) { | |
1650 | /* only xsum need */ | |
ba211e3e JP |
1651 | netdev_warn(adapter->netdev, |
1652 | "IPV4 tso with zero data??\n"); | |
a6a53252 JY |
1653 | goto check_sum; |
1654 | } else { | |
1655 | ip_hdr(skb)->check = 0; | |
1656 | ip_hdr(skb)->tot_len = 0; | |
1657 | tcp_hdr(skb)->check = ~csum_tcpudp_magic( | |
1658 | ip_hdr(skb)->saddr, | |
1659 | ip_hdr(skb)->daddr, | |
1660 | 0, IPPROTO_TCP, 0); | |
1661 | tpd->word3 |= (ip_hdr(skb)->ihl & | |
1662 | TDP_V4_IPHL_MASK) << | |
1663 | TPD_V4_IPHL_SHIFT; | |
1664 | tpd->word3 |= ((tcp_hdrlen(skb) >> 2) & | |
1665 | TPD_TCPHDRLEN_MASK) << | |
1666 | TPD_TCPHDRLEN_SHIFT; | |
1667 | tpd->word3 |= ((skb_shinfo(skb)->gso_size) & | |
1668 | TPD_MSS_MASK) << TPD_MSS_SHIFT; | |
1669 | tpd->word3 |= 1 << TPD_SEGMENT_EN_SHIFT; | |
1670 | } | |
1671 | return 0; | |
1672 | } | |
a6a53252 JY |
1673 | } |
1674 | ||
1675 | check_sum: | |
1676 | if (likely(skb->ip_summed == CHECKSUM_PARTIAL)) { | |
1677 | u8 css, cso; | |
1678 | ||
0d0b1672 | 1679 | cso = skb_checksum_start_offset(skb); |
a6a53252 | 1680 | if (unlikely(cso & 0x1)) { |
ba211e3e JP |
1681 | netdev_err(adapter->netdev, |
1682 | "payload offset should not ant event number\n"); | |
a6a53252 JY |
1683 | return -1; |
1684 | } else { | |
1685 | css = cso + skb->csum_offset; | |
1686 | tpd->word3 |= (cso & TPD_PLOADOFFSET_MASK) << | |
1687 | TPD_PLOADOFFSET_SHIFT; | |
1688 | tpd->word3 |= (css & TPD_CCSUMOFFSET_MASK) << | |
1689 | TPD_CCSUMOFFSET_SHIFT; | |
1690 | tpd->word3 |= 1 << TPD_CC_SEGMENT_EN_SHIFT; | |
1691 | } | |
1692 | } | |
1693 | ||
1694 | return 0; | |
1695 | } | |
1696 | ||
352900b5 NH |
1697 | static int atl1e_tx_map(struct atl1e_adapter *adapter, |
1698 | struct sk_buff *skb, struct atl1e_tpd_desc *tpd) | |
a6a53252 JY |
1699 | { |
1700 | struct atl1e_tpd_desc *use_tpd = NULL; | |
1701 | struct atl1e_tx_buffer *tx_buffer = NULL; | |
e743d313 | 1702 | u16 buf_len = skb_headlen(skb); |
a6a53252 JY |
1703 | u16 map_len = 0; |
1704 | u16 mapped_len = 0; | |
1705 | u16 hdr_len = 0; | |
1706 | u16 nr_frags; | |
1707 | u16 f; | |
1708 | int segment; | |
352900b5 | 1709 | int ring_start = adapter->tx_ring.next_to_use; |
584ec435 | 1710 | int ring_end; |
a6a53252 JY |
1711 | |
1712 | nr_frags = skb_shinfo(skb)->nr_frags; | |
1713 | segment = (tpd->word3 >> TPD_SEGMENT_EN_SHIFT) & TPD_SEGMENT_EN_MASK; | |
1714 | if (segment) { | |
1715 | /* TSO */ | |
1716 | map_len = hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); | |
1717 | use_tpd = tpd; | |
1718 | ||
1719 | tx_buffer = atl1e_get_tx_buffer(adapter, use_tpd); | |
1720 | tx_buffer->length = map_len; | |
85eb5bc3 CJ |
1721 | tx_buffer->dma = dma_map_single(&adapter->pdev->dev, |
1722 | skb->data, hdr_len, | |
1723 | DMA_TO_DEVICE); | |
352900b5 NH |
1724 | if (dma_mapping_error(&adapter->pdev->dev, tx_buffer->dma)) |
1725 | return -ENOSPC; | |
1726 | ||
03f18991 | 1727 | ATL1E_SET_PCIMAP_TYPE(tx_buffer, ATL1E_TX_PCIMAP_SINGLE); |
a6a53252 JY |
1728 | mapped_len += map_len; |
1729 | use_tpd->buffer_addr = cpu_to_le64(tx_buffer->dma); | |
1730 | use_tpd->word2 = (use_tpd->word2 & (~TPD_BUFLEN_MASK)) | | |
1731 | ((cpu_to_le32(tx_buffer->length) & | |
1732 | TPD_BUFLEN_MASK) << TPD_BUFLEN_SHIFT); | |
1733 | } | |
1734 | ||
1735 | while (mapped_len < buf_len) { | |
1736 | /* mapped_len == 0, means we should use the first tpd, | |
1737 | which is given by caller */ | |
1738 | if (mapped_len == 0) { | |
1739 | use_tpd = tpd; | |
1740 | } else { | |
1741 | use_tpd = atl1e_get_tpd(adapter); | |
1742 | memcpy(use_tpd, tpd, sizeof(struct atl1e_tpd_desc)); | |
1743 | } | |
1744 | tx_buffer = atl1e_get_tx_buffer(adapter, use_tpd); | |
1745 | tx_buffer->skb = NULL; | |
1746 | ||
1747 | tx_buffer->length = map_len = | |
1748 | ((buf_len - mapped_len) >= MAX_TX_BUF_LEN) ? | |
1749 | MAX_TX_BUF_LEN : (buf_len - mapped_len); | |
1750 | tx_buffer->dma = | |
85eb5bc3 CJ |
1751 | dma_map_single(&adapter->pdev->dev, |
1752 | skb->data + mapped_len, map_len, | |
1753 | DMA_TO_DEVICE); | |
352900b5 NH |
1754 | |
1755 | if (dma_mapping_error(&adapter->pdev->dev, tx_buffer->dma)) { | |
584ec435 NH |
1756 | /* We need to unwind the mappings we've done */ |
1757 | ring_end = adapter->tx_ring.next_to_use; | |
1758 | adapter->tx_ring.next_to_use = ring_start; | |
1759 | while (adapter->tx_ring.next_to_use != ring_end) { | |
1760 | tpd = atl1e_get_tpd(adapter); | |
1761 | tx_buffer = atl1e_get_tx_buffer(adapter, tpd); | |
85eb5bc3 CJ |
1762 | dma_unmap_single(&adapter->pdev->dev, |
1763 | tx_buffer->dma, | |
1764 | tx_buffer->length, | |
1765 | DMA_TO_DEVICE); | |
584ec435 | 1766 | } |
352900b5 NH |
1767 | /* Reset the tx rings next pointer */ |
1768 | adapter->tx_ring.next_to_use = ring_start; | |
1769 | return -ENOSPC; | |
1770 | } | |
1771 | ||
03f18991 | 1772 | ATL1E_SET_PCIMAP_TYPE(tx_buffer, ATL1E_TX_PCIMAP_SINGLE); |
a6a53252 JY |
1773 | mapped_len += map_len; |
1774 | use_tpd->buffer_addr = cpu_to_le64(tx_buffer->dma); | |
1775 | use_tpd->word2 = (use_tpd->word2 & (~TPD_BUFLEN_MASK)) | | |
1776 | ((cpu_to_le32(tx_buffer->length) & | |
1777 | TPD_BUFLEN_MASK) << TPD_BUFLEN_SHIFT); | |
1778 | } | |
1779 | ||
1780 | for (f = 0; f < nr_frags; f++) { | |
d7840976 | 1781 | const skb_frag_t *frag = &skb_shinfo(skb)->frags[f]; |
a6a53252 JY |
1782 | u16 i; |
1783 | u16 seg_num; | |
1784 | ||
9e903e08 | 1785 | buf_len = skb_frag_size(frag); |
a6a53252 JY |
1786 | |
1787 | seg_num = (buf_len + MAX_TX_BUF_LEN - 1) / MAX_TX_BUF_LEN; | |
1788 | for (i = 0; i < seg_num; i++) { | |
1789 | use_tpd = atl1e_get_tpd(adapter); | |
1790 | memcpy(use_tpd, tpd, sizeof(struct atl1e_tpd_desc)); | |
1791 | ||
1792 | tx_buffer = atl1e_get_tx_buffer(adapter, use_tpd); | |
0ee904c3 | 1793 | BUG_ON(tx_buffer->skb); |
a6a53252 JY |
1794 | |
1795 | tx_buffer->skb = NULL; | |
1796 | tx_buffer->length = | |
1797 | (buf_len > MAX_TX_BUF_LEN) ? | |
1798 | MAX_TX_BUF_LEN : buf_len; | |
1799 | buf_len -= tx_buffer->length; | |
1800 | ||
6adaaac7 IC |
1801 | tx_buffer->dma = skb_frag_dma_map(&adapter->pdev->dev, |
1802 | frag, | |
1803 | (i * MAX_TX_BUF_LEN), | |
1804 | tx_buffer->length, | |
5d6bcdfe | 1805 | DMA_TO_DEVICE); |
352900b5 NH |
1806 | |
1807 | if (dma_mapping_error(&adapter->pdev->dev, tx_buffer->dma)) { | |
584ec435 NH |
1808 | /* We need to unwind the mappings we've done */ |
1809 | ring_end = adapter->tx_ring.next_to_use; | |
1810 | adapter->tx_ring.next_to_use = ring_start; | |
1811 | while (adapter->tx_ring.next_to_use != ring_end) { | |
1812 | tpd = atl1e_get_tpd(adapter); | |
1813 | tx_buffer = atl1e_get_tx_buffer(adapter, tpd); | |
1814 | dma_unmap_page(&adapter->pdev->dev, tx_buffer->dma, | |
1815 | tx_buffer->length, DMA_TO_DEVICE); | |
1816 | } | |
1817 | ||
352900b5 NH |
1818 | /* Reset the ring next to use pointer */ |
1819 | adapter->tx_ring.next_to_use = ring_start; | |
1820 | return -ENOSPC; | |
1821 | } | |
1822 | ||
03f18991 | 1823 | ATL1E_SET_PCIMAP_TYPE(tx_buffer, ATL1E_TX_PCIMAP_PAGE); |
a6a53252 JY |
1824 | use_tpd->buffer_addr = cpu_to_le64(tx_buffer->dma); |
1825 | use_tpd->word2 = (use_tpd->word2 & (~TPD_BUFLEN_MASK)) | | |
1826 | ((cpu_to_le32(tx_buffer->length) & | |
1827 | TPD_BUFLEN_MASK) << TPD_BUFLEN_SHIFT); | |
1828 | } | |
1829 | } | |
1830 | ||
1831 | if ((tpd->word3 >> TPD_SEGMENT_EN_SHIFT) & TPD_SEGMENT_EN_MASK) | |
1832 | /* note this one is a tcp header */ | |
1833 | tpd->word3 |= 1 << TPD_HDRFLAG_SHIFT; | |
1834 | /* The last tpd */ | |
1835 | ||
1836 | use_tpd->word3 |= 1 << TPD_EOP_SHIFT; | |
1837 | /* The last buffer info contain the skb address, | |
1838 | so it will be free after unmap */ | |
1839 | tx_buffer->skb = skb; | |
352900b5 | 1840 | return 0; |
a6a53252 JY |
1841 | } |
1842 | ||
1843 | static void atl1e_tx_queue(struct atl1e_adapter *adapter, u16 count, | |
1844 | struct atl1e_tpd_desc *tpd) | |
1845 | { | |
1846 | struct atl1e_tx_ring *tx_ring = &adapter->tx_ring; | |
1847 | /* Force memory writes to complete before letting h/w | |
1848 | * know there are new descriptors to fetch. (Only | |
1849 | * applicable for weak-ordered memory model archs, | |
1850 | * such as IA-64). */ | |
1851 | wmb(); | |
1852 | AT_WRITE_REG(&adapter->hw, REG_MB_TPD_PROD_IDX, tx_ring->next_to_use); | |
1853 | } | |
1854 | ||
61357325 SH |
1855 | static netdev_tx_t atl1e_xmit_frame(struct sk_buff *skb, |
1856 | struct net_device *netdev) | |
a6a53252 JY |
1857 | { |
1858 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
a6a53252 JY |
1859 | u16 tpd_req = 1; |
1860 | struct atl1e_tpd_desc *tpd; | |
1861 | ||
1862 | if (test_bit(__AT_DOWN, &adapter->flags)) { | |
1863 | dev_kfree_skb_any(skb); | |
1864 | return NETDEV_TX_OK; | |
1865 | } | |
1866 | ||
1867 | if (unlikely(skb->len <= 0)) { | |
1868 | dev_kfree_skb_any(skb); | |
1869 | return NETDEV_TX_OK; | |
1870 | } | |
1871 | tpd_req = atl1e_cal_tdp_req(skb); | |
a6a53252 JY |
1872 | |
1873 | if (atl1e_tpd_avail(adapter) < tpd_req) { | |
1874 | /* no enough descriptor, just stop queue */ | |
1875 | netif_stop_queue(netdev); | |
a6a53252 JY |
1876 | return NETDEV_TX_BUSY; |
1877 | } | |
1878 | ||
1879 | tpd = atl1e_get_tpd(adapter); | |
1880 | ||
df8a39de JP |
1881 | if (skb_vlan_tag_present(skb)) { |
1882 | u16 vlan_tag = skb_vlan_tag_get(skb); | |
a6a53252 JY |
1883 | u16 atl1e_vlan_tag; |
1884 | ||
1885 | tpd->word3 |= 1 << TPD_INS_VL_TAG_SHIFT; | |
1886 | AT_VLAN_TAG_TO_TPD_TAG(vlan_tag, atl1e_vlan_tag); | |
1887 | tpd->word2 |= (atl1e_vlan_tag & TPD_VLANTAG_MASK) << | |
1888 | TPD_VLAN_SHIFT; | |
1889 | } | |
1890 | ||
17d0cdfa | 1891 | if (skb->protocol == htons(ETH_P_8021Q)) |
a6a53252 JY |
1892 | tpd->word3 |= 1 << TPD_VL_TAGGED_SHIFT; |
1893 | ||
1894 | if (skb_network_offset(skb) != ETH_HLEN) | |
1895 | tpd->word3 |= 1 << TPD_ETHTYPE_SHIFT; /* 802.3 frame */ | |
1896 | ||
1897 | /* do TSO and check sum */ | |
1898 | if (atl1e_tso_csum(adapter, skb, tpd) != 0) { | |
a6a53252 JY |
1899 | dev_kfree_skb_any(skb); |
1900 | return NETDEV_TX_OK; | |
1901 | } | |
1902 | ||
584ec435 NH |
1903 | if (atl1e_tx_map(adapter, skb, tpd)) { |
1904 | dev_kfree_skb_any(skb); | |
352900b5 | 1905 | goto out; |
584ec435 | 1906 | } |
352900b5 | 1907 | |
a6a53252 | 1908 | atl1e_tx_queue(adapter, tpd_req, tpd); |
352900b5 | 1909 | out: |
a6a53252 JY |
1910 | return NETDEV_TX_OK; |
1911 | } | |
1912 | ||
1913 | static void atl1e_free_irq(struct atl1e_adapter *adapter) | |
1914 | { | |
1915 | struct net_device *netdev = adapter->netdev; | |
1916 | ||
1917 | free_irq(adapter->pdev->irq, netdev); | |
a6a53252 JY |
1918 | } |
1919 | ||
1920 | static int atl1e_request_irq(struct atl1e_adapter *adapter) | |
1921 | { | |
1922 | struct pci_dev *pdev = adapter->pdev; | |
1923 | struct net_device *netdev = adapter->netdev; | |
a6a53252 JY |
1924 | int err = 0; |
1925 | ||
188ab1b1 HFS |
1926 | err = request_irq(pdev->irq, atl1e_intr, IRQF_SHARED, netdev->name, |
1927 | netdev); | |
a6a53252 | 1928 | if (err) { |
ba211e3e JP |
1929 | netdev_dbg(adapter->netdev, |
1930 | "Unable to allocate interrupt Error: %d\n", err); | |
a6a53252 JY |
1931 | return err; |
1932 | } | |
b5efab99 | 1933 | netdev_dbg(netdev, "atl1e_request_irq OK\n"); |
a6a53252 JY |
1934 | return err; |
1935 | } | |
1936 | ||
1937 | int atl1e_up(struct atl1e_adapter *adapter) | |
1938 | { | |
1939 | struct net_device *netdev = adapter->netdev; | |
1940 | int err = 0; | |
1941 | u32 val; | |
1942 | ||
1943 | /* hardware has been reset, we need to reload some things */ | |
1944 | err = atl1e_init_hw(&adapter->hw); | |
1945 | if (err) { | |
1946 | err = -EIO; | |
1947 | return err; | |
1948 | } | |
1949 | atl1e_init_ring_ptrs(adapter); | |
1950 | atl1e_set_multi(netdev); | |
1951 | atl1e_restore_vlan(adapter); | |
1952 | ||
1953 | if (atl1e_configure(adapter)) { | |
1954 | err = -EIO; | |
1955 | goto err_up; | |
1956 | } | |
1957 | ||
1958 | clear_bit(__AT_DOWN, &adapter->flags); | |
1959 | napi_enable(&adapter->napi); | |
1960 | atl1e_irq_enable(adapter); | |
1961 | val = AT_READ_REG(&adapter->hw, REG_MASTER_CTRL); | |
1962 | AT_WRITE_REG(&adapter->hw, REG_MASTER_CTRL, | |
1963 | val | MASTER_CTRL_MANUAL_INT); | |
1964 | ||
1965 | err_up: | |
1966 | return err; | |
1967 | } | |
1968 | ||
1969 | void atl1e_down(struct atl1e_adapter *adapter) | |
1970 | { | |
1971 | struct net_device *netdev = adapter->netdev; | |
1972 | ||
1973 | /* signal that we're down so the interrupt handler does not | |
1974 | * reschedule our watchdog timer */ | |
1975 | set_bit(__AT_DOWN, &adapter->flags); | |
1976 | ||
a6a53252 | 1977 | netif_stop_queue(netdev); |
a6a53252 JY |
1978 | |
1979 | /* reset MAC to disable all RX/TX */ | |
1980 | atl1e_reset_hw(&adapter->hw); | |
1981 | msleep(1); | |
1982 | ||
1983 | napi_disable(&adapter->napi); | |
1984 | atl1e_del_timer(adapter); | |
1985 | atl1e_irq_disable(adapter); | |
1986 | ||
1987 | netif_carrier_off(netdev); | |
1988 | adapter->link_speed = SPEED_0; | |
1989 | adapter->link_duplex = -1; | |
1990 | atl1e_clean_tx_ring(adapter); | |
1991 | atl1e_clean_rx_ring(adapter); | |
1992 | } | |
1993 | ||
49ce9c2c | 1994 | /** |
a6a53252 JY |
1995 | * atl1e_open - Called when a network interface is made active |
1996 | * @netdev: network interface device structure | |
1997 | * | |
1998 | * Returns 0 on success, negative value on failure | |
1999 | * | |
2000 | * The open entry point is called when a network interface is made | |
2001 | * active by the system (IFF_UP). At this point all resources needed | |
2002 | * for transmit and receive operations are allocated, the interrupt | |
2003 | * handler is registered with the OS, the watchdog timer is started, | |
2004 | * and the stack is notified that the interface is ready. | |
2005 | */ | |
2006 | static int atl1e_open(struct net_device *netdev) | |
2007 | { | |
2008 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
2009 | int err; | |
2010 | ||
2011 | /* disallow open during test */ | |
2012 | if (test_bit(__AT_TESTING, &adapter->flags)) | |
2013 | return -EBUSY; | |
2014 | ||
2015 | /* allocate rx/tx dma buffer & descriptors */ | |
2016 | atl1e_init_ring_resources(adapter); | |
2017 | err = atl1e_setup_ring_resources(adapter); | |
2018 | if (unlikely(err)) | |
2019 | return err; | |
2020 | ||
2021 | err = atl1e_request_irq(adapter); | |
2022 | if (unlikely(err)) | |
2023 | goto err_req_irq; | |
2024 | ||
2025 | err = atl1e_up(adapter); | |
2026 | if (unlikely(err)) | |
2027 | goto err_up; | |
2028 | ||
2029 | return 0; | |
2030 | ||
2031 | err_up: | |
2032 | atl1e_free_irq(adapter); | |
2033 | err_req_irq: | |
2034 | atl1e_free_ring_resources(adapter); | |
2035 | atl1e_reset_hw(&adapter->hw); | |
2036 | ||
2037 | return err; | |
2038 | } | |
2039 | ||
49ce9c2c | 2040 | /** |
a6a53252 JY |
2041 | * atl1e_close - Disables a network interface |
2042 | * @netdev: network interface device structure | |
2043 | * | |
2044 | * Returns 0, this is not allowed to fail | |
2045 | * | |
2046 | * The close entry point is called when an interface is de-activated | |
2047 | * by the OS. The hardware is still under the drivers control, but | |
2048 | * needs to be disabled. A global MAC reset is issued to stop the | |
2049 | * hardware, and all transmit and receive resources are freed. | |
2050 | */ | |
2051 | static int atl1e_close(struct net_device *netdev) | |
2052 | { | |
2053 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
2054 | ||
2055 | WARN_ON(test_bit(__AT_RESETTING, &adapter->flags)); | |
2056 | atl1e_down(adapter); | |
2057 | atl1e_free_irq(adapter); | |
2058 | atl1e_free_ring_resources(adapter); | |
2059 | ||
2060 | return 0; | |
2061 | } | |
2062 | ||
a6a53252 JY |
2063 | static int atl1e_suspend(struct pci_dev *pdev, pm_message_t state) |
2064 | { | |
2065 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2066 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
2067 | struct atl1e_hw *hw = &adapter->hw; | |
2068 | u32 ctrl = 0; | |
2069 | u32 mac_ctrl_data = 0; | |
2070 | u32 wol_ctrl_data = 0; | |
2071 | u16 mii_advertise_data = 0; | |
2072 | u16 mii_bmsr_data = 0; | |
2073 | u16 mii_intr_status_data = 0; | |
2074 | u32 wufc = adapter->wol; | |
2075 | u32 i; | |
2076 | #ifdef CONFIG_PM | |
2077 | int retval = 0; | |
2078 | #endif | |
2079 | ||
2080 | if (netif_running(netdev)) { | |
2081 | WARN_ON(test_bit(__AT_RESETTING, &adapter->flags)); | |
2082 | atl1e_down(adapter); | |
2083 | } | |
2084 | netif_device_detach(netdev); | |
2085 | ||
2086 | #ifdef CONFIG_PM | |
2087 | retval = pci_save_state(pdev); | |
2088 | if (retval) | |
2089 | return retval; | |
2090 | #endif | |
2091 | ||
2092 | if (wufc) { | |
2093 | /* get link status */ | |
64699336 JP |
2094 | atl1e_read_phy_reg(hw, MII_BMSR, &mii_bmsr_data); |
2095 | atl1e_read_phy_reg(hw, MII_BMSR, &mii_bmsr_data); | |
a6a53252 | 2096 | |
ccd5c8ef | 2097 | mii_advertise_data = ADVERTISE_10HALF; |
a6a53252 | 2098 | |
ccd5c8ef | 2099 | if ((atl1e_write_phy_reg(hw, MII_CTRL1000, 0) != 0) || |
a6a53252 JY |
2100 | (atl1e_write_phy_reg(hw, |
2101 | MII_ADVERTISE, mii_advertise_data) != 0) || | |
2102 | (atl1e_phy_commit(hw)) != 0) { | |
ba211e3e | 2103 | netdev_dbg(adapter->netdev, "set phy register failed\n"); |
a6a53252 JY |
2104 | goto wol_dis; |
2105 | } | |
2106 | ||
2107 | hw->phy_configured = false; /* re-init PHY when resume */ | |
2108 | ||
2109 | /* turn on magic packet wol */ | |
2110 | if (wufc & AT_WUFC_MAG) | |
2111 | wol_ctrl_data |= WOL_MAGIC_EN | WOL_MAGIC_PME_EN; | |
2112 | ||
2113 | if (wufc & AT_WUFC_LNKC) { | |
2114 | /* if orignal link status is link, just wait for retrive link */ | |
2115 | if (mii_bmsr_data & BMSR_LSTATUS) { | |
2116 | for (i = 0; i < AT_SUSPEND_LINK_TIMEOUT; i++) { | |
2117 | msleep(100); | |
2118 | atl1e_read_phy_reg(hw, MII_BMSR, | |
64699336 | 2119 | &mii_bmsr_data); |
a6a53252 JY |
2120 | if (mii_bmsr_data & BMSR_LSTATUS) |
2121 | break; | |
2122 | } | |
2123 | ||
2124 | if ((mii_bmsr_data & BMSR_LSTATUS) == 0) | |
ba211e3e JP |
2125 | netdev_dbg(adapter->netdev, |
2126 | "Link may change when suspend\n"); | |
a6a53252 JY |
2127 | } |
2128 | wol_ctrl_data |= WOL_LINK_CHG_EN | WOL_LINK_CHG_PME_EN; | |
2129 | /* only link up can wake up */ | |
2130 | if (atl1e_write_phy_reg(hw, MII_INT_CTRL, 0x400) != 0) { | |
ba211e3e JP |
2131 | netdev_dbg(adapter->netdev, |
2132 | "read write phy register failed\n"); | |
a6a53252 JY |
2133 | goto wol_dis; |
2134 | } | |
2135 | } | |
2136 | /* clear phy interrupt */ | |
2137 | atl1e_read_phy_reg(hw, MII_INT_STATUS, &mii_intr_status_data); | |
2138 | /* Config MAC Ctrl register */ | |
2139 | mac_ctrl_data = MAC_CTRL_RX_EN; | |
2140 | /* set to 10/100M halt duplex */ | |
2141 | mac_ctrl_data |= MAC_CTRL_SPEED_10_100 << MAC_CTRL_SPEED_SHIFT; | |
2142 | mac_ctrl_data |= (((u32)adapter->hw.preamble_len & | |
2143 | MAC_CTRL_PRMLEN_MASK) << | |
2144 | MAC_CTRL_PRMLEN_SHIFT); | |
2145 | ||
2707fffc | 2146 | __atl1e_vlan_mode(netdev->features, &mac_ctrl_data); |
a6a53252 JY |
2147 | |
2148 | /* magic packet maybe Broadcast&multicast&Unicast frame */ | |
2149 | if (wufc & AT_WUFC_MAG) | |
2150 | mac_ctrl_data |= MAC_CTRL_BC_EN; | |
2151 | ||
ba211e3e JP |
2152 | netdev_dbg(adapter->netdev, "suspend MAC=0x%x\n", |
2153 | mac_ctrl_data); | |
a6a53252 JY |
2154 | |
2155 | AT_WRITE_REG(hw, REG_WOL_CTRL, wol_ctrl_data); | |
2156 | AT_WRITE_REG(hw, REG_MAC_CTRL, mac_ctrl_data); | |
2157 | /* pcie patch */ | |
2158 | ctrl = AT_READ_REG(hw, REG_PCIE_PHYMISC); | |
2159 | ctrl |= PCIE_PHYMISC_FORCE_RCV_DET; | |
2160 | AT_WRITE_REG(hw, REG_PCIE_PHYMISC, ctrl); | |
2161 | pci_enable_wake(pdev, pci_choose_state(pdev, state), 1); | |
2162 | goto suspend_exit; | |
2163 | } | |
2164 | wol_dis: | |
2165 | ||
2166 | /* WOL disabled */ | |
2167 | AT_WRITE_REG(hw, REG_WOL_CTRL, 0); | |
2168 | ||
2169 | /* pcie patch */ | |
2170 | ctrl = AT_READ_REG(hw, REG_PCIE_PHYMISC); | |
2171 | ctrl |= PCIE_PHYMISC_FORCE_RCV_DET; | |
2172 | AT_WRITE_REG(hw, REG_PCIE_PHYMISC, ctrl); | |
2173 | ||
2174 | atl1e_force_ps(hw); | |
2175 | hw->phy_configured = false; /* re-init PHY when resume */ | |
2176 | ||
2177 | pci_enable_wake(pdev, pci_choose_state(pdev, state), 0); | |
2178 | ||
2179 | suspend_exit: | |
2180 | ||
2181 | if (netif_running(netdev)) | |
2182 | atl1e_free_irq(adapter); | |
2183 | ||
2184 | pci_disable_device(pdev); | |
2185 | ||
2186 | pci_set_power_state(pdev, pci_choose_state(pdev, state)); | |
2187 | ||
2188 | return 0; | |
2189 | } | |
2190 | ||
d6f8aa85 | 2191 | #ifdef CONFIG_PM |
a6a53252 JY |
2192 | static int atl1e_resume(struct pci_dev *pdev) |
2193 | { | |
2194 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2195 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
2196 | u32 err; | |
2197 | ||
2198 | pci_set_power_state(pdev, PCI_D0); | |
2199 | pci_restore_state(pdev); | |
2200 | ||
2201 | err = pci_enable_device(pdev); | |
2202 | if (err) { | |
ba211e3e JP |
2203 | netdev_err(adapter->netdev, |
2204 | "Cannot enable PCI device from suspend\n"); | |
a6a53252 JY |
2205 | return err; |
2206 | } | |
2207 | ||
2208 | pci_set_master(pdev); | |
2209 | ||
2210 | AT_READ_REG(&adapter->hw, REG_WOL_CTRL); /* clear WOL status */ | |
2211 | ||
2212 | pci_enable_wake(pdev, PCI_D3hot, 0); | |
2213 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
2214 | ||
2215 | AT_WRITE_REG(&adapter->hw, REG_WOL_CTRL, 0); | |
2216 | ||
50f684b9 | 2217 | if (netif_running(netdev)) { |
a6a53252 JY |
2218 | err = atl1e_request_irq(adapter); |
2219 | if (err) | |
2220 | return err; | |
50f684b9 | 2221 | } |
a6a53252 JY |
2222 | |
2223 | atl1e_reset_hw(&adapter->hw); | |
2224 | ||
2225 | if (netif_running(netdev)) | |
2226 | atl1e_up(adapter); | |
2227 | ||
2228 | netif_device_attach(netdev); | |
2229 | ||
2230 | return 0; | |
2231 | } | |
2232 | #endif | |
2233 | ||
2234 | static void atl1e_shutdown(struct pci_dev *pdev) | |
2235 | { | |
2236 | atl1e_suspend(pdev, PMSG_SUSPEND); | |
2237 | } | |
2238 | ||
1e058ab5 SH |
2239 | static const struct net_device_ops atl1e_netdev_ops = { |
2240 | .ndo_open = atl1e_open, | |
2241 | .ndo_stop = atl1e_close, | |
00829823 | 2242 | .ndo_start_xmit = atl1e_xmit_frame, |
1e058ab5 | 2243 | .ndo_get_stats = atl1e_get_stats, |
afc4b13d | 2244 | .ndo_set_rx_mode = atl1e_set_multi, |
1e058ab5 SH |
2245 | .ndo_validate_addr = eth_validate_addr, |
2246 | .ndo_set_mac_address = atl1e_set_mac_addr, | |
2707fffc JP |
2247 | .ndo_fix_features = atl1e_fix_features, |
2248 | .ndo_set_features = atl1e_set_features, | |
1e058ab5 SH |
2249 | .ndo_change_mtu = atl1e_change_mtu, |
2250 | .ndo_do_ioctl = atl1e_ioctl, | |
2251 | .ndo_tx_timeout = atl1e_tx_timeout, | |
1e058ab5 SH |
2252 | #ifdef CONFIG_NET_POLL_CONTROLLER |
2253 | .ndo_poll_controller = atl1e_netpoll, | |
2254 | #endif | |
2255 | ||
2256 | }; | |
2257 | ||
a6a53252 JY |
2258 | static int atl1e_init_netdev(struct net_device *netdev, struct pci_dev *pdev) |
2259 | { | |
2260 | SET_NETDEV_DEV(netdev, &pdev->dev); | |
2261 | pci_set_drvdata(pdev, netdev); | |
2262 | ||
1e058ab5 | 2263 | netdev->netdev_ops = &atl1e_netdev_ops; |
00829823 | 2264 | |
a6a53252 | 2265 | netdev->watchdog_timeo = AT_TX_WATCHDOG; |
67bef942 JW |
2266 | /* MTU range: 42 - 8170 */ |
2267 | netdev->min_mtu = ETH_ZLEN - (ETH_HLEN + VLAN_HLEN); | |
2268 | netdev->max_mtu = MAX_JUMBO_FRAME_SIZE - | |
2269 | (ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN); | |
a6a53252 JY |
2270 | atl1e_set_ethtool_ops(netdev); |
2271 | ||
782d640a | 2272 | netdev->hw_features = NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_TSO | |
f646968f | 2273 | NETIF_F_HW_VLAN_CTAG_RX; |
4acff371 | 2274 | netdev->features = netdev->hw_features | NETIF_F_HW_VLAN_CTAG_TX; |
40dc9ab2 AM |
2275 | /* not enabled by default */ |
2276 | netdev->hw_features |= NETIF_F_RXALL | NETIF_F_RXFCS; | |
a6a53252 JY |
2277 | return 0; |
2278 | } | |
2279 | ||
49ce9c2c | 2280 | /** |
a6a53252 JY |
2281 | * atl1e_probe - Device Initialization Routine |
2282 | * @pdev: PCI device information struct | |
2283 | * @ent: entry in atl1e_pci_tbl | |
2284 | * | |
2285 | * Returns 0 on success, negative on failure | |
2286 | * | |
2287 | * atl1e_probe initializes an adapter identified by a pci_dev structure. | |
2288 | * The OS initialization, configuring of the adapter private structure, | |
2289 | * and a hardware reset occur. | |
2290 | */ | |
1dd06ae8 | 2291 | static int atl1e_probe(struct pci_dev *pdev, const struct pci_device_id *ent) |
a6a53252 JY |
2292 | { |
2293 | struct net_device *netdev; | |
2294 | struct atl1e_adapter *adapter = NULL; | |
2295 | static int cards_found; | |
2296 | ||
2297 | int err = 0; | |
2298 | ||
2299 | err = pci_enable_device(pdev); | |
2300 | if (err) { | |
2301 | dev_err(&pdev->dev, "cannot enable PCI device\n"); | |
2302 | return err; | |
2303 | } | |
2304 | ||
2305 | /* | |
2306 | * The atl1e chip can DMA to 64-bit addresses, but it uses a single | |
2307 | * shared register for the high 32 bits, so only a single, aligned, | |
2308 | * 4 GB physical address range can be used at a time. | |
2309 | * | |
2310 | * Supporting 64-bit DMA on this hardware is more trouble than it's | |
2311 | * worth. It is far easier to limit to 32-bit DMA than update | |
2312 | * various kernel subsystems to support the mechanics required by a | |
2313 | * fixed-high-32-bit system. | |
2314 | */ | |
3a36060b ZC |
2315 | err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); |
2316 | if (err) { | |
a6a53252 JY |
2317 | dev_err(&pdev->dev, "No usable DMA configuration,aborting\n"); |
2318 | goto err_dma; | |
2319 | } | |
2320 | ||
2321 | err = pci_request_regions(pdev, atl1e_driver_name); | |
2322 | if (err) { | |
2323 | dev_err(&pdev->dev, "cannot obtain PCI resources\n"); | |
2324 | goto err_pci_reg; | |
2325 | } | |
2326 | ||
2327 | pci_set_master(pdev); | |
2328 | ||
2329 | netdev = alloc_etherdev(sizeof(struct atl1e_adapter)); | |
2330 | if (netdev == NULL) { | |
2331 | err = -ENOMEM; | |
a6a53252 JY |
2332 | goto err_alloc_etherdev; |
2333 | } | |
2334 | ||
2335 | err = atl1e_init_netdev(netdev, pdev); | |
2336 | if (err) { | |
ba211e3e | 2337 | netdev_err(netdev, "init netdevice failed\n"); |
a6a53252 JY |
2338 | goto err_init_netdev; |
2339 | } | |
2340 | adapter = netdev_priv(netdev); | |
2341 | adapter->bd_number = cards_found; | |
2342 | adapter->netdev = netdev; | |
2343 | adapter->pdev = pdev; | |
2344 | adapter->hw.adapter = adapter; | |
2345 | adapter->hw.hw_addr = pci_iomap(pdev, BAR_0, 0); | |
2346 | if (!adapter->hw.hw_addr) { | |
2347 | err = -EIO; | |
ba211e3e | 2348 | netdev_err(netdev, "cannot map device registers\n"); |
a6a53252 JY |
2349 | goto err_ioremap; |
2350 | } | |
a6a53252 JY |
2351 | |
2352 | /* init mii data */ | |
2353 | adapter->mii.dev = netdev; | |
2354 | adapter->mii.mdio_read = atl1e_mdio_read; | |
2355 | adapter->mii.mdio_write = atl1e_mdio_write; | |
2356 | adapter->mii.phy_id_mask = 0x1f; | |
2357 | adapter->mii.reg_num_mask = MDIO_REG_ADDR_MASK; | |
2358 | ||
2359 | netif_napi_add(netdev, &adapter->napi, atl1e_clean, 64); | |
2360 | ||
e99e88a9 | 2361 | timer_setup(&adapter->phy_config_timer, atl1e_phy_config, 0); |
a6a53252 JY |
2362 | |
2363 | /* get user settings */ | |
2364 | atl1e_check_options(adapter); | |
2365 | /* | |
2366 | * Mark all PCI regions associated with PCI device | |
2367 | * pdev as being reserved by owner atl1e_driver_name | |
2368 | * Enables bus-mastering on the device and calls | |
2369 | * pcibios_set_master to do the needed arch specific settings | |
2370 | */ | |
2371 | atl1e_setup_pcicmd(pdev); | |
2372 | /* setup the private structure */ | |
2373 | err = atl1e_sw_init(adapter); | |
2374 | if (err) { | |
ba211e3e | 2375 | netdev_err(netdev, "net device private data init failed\n"); |
a6a53252 JY |
2376 | goto err_sw_init; |
2377 | } | |
2378 | ||
2379 | /* Init GPHY as early as possible due to power saving issue */ | |
a6a53252 | 2380 | atl1e_phy_init(&adapter->hw); |
a6a53252 JY |
2381 | /* reset the controller to |
2382 | * put the device in a known good starting state */ | |
2383 | err = atl1e_reset_hw(&adapter->hw); | |
2384 | if (err) { | |
2385 | err = -EIO; | |
2386 | goto err_reset; | |
2387 | } | |
2388 | ||
2389 | if (atl1e_read_mac_addr(&adapter->hw) != 0) { | |
2390 | err = -EIO; | |
ba211e3e | 2391 | netdev_err(netdev, "get mac address failed\n"); |
a6a53252 JY |
2392 | goto err_eeprom; |
2393 | } | |
2394 | ||
2395 | memcpy(netdev->dev_addr, adapter->hw.mac_addr, netdev->addr_len); | |
ba211e3e | 2396 | netdev_dbg(netdev, "mac address : %pM\n", adapter->hw.mac_addr); |
a6a53252 JY |
2397 | |
2398 | INIT_WORK(&adapter->reset_task, atl1e_reset_task); | |
2399 | INIT_WORK(&adapter->link_chg_task, atl1e_link_chg_task); | |
31d1670e | 2400 | netif_set_gso_max_size(netdev, MAX_TSO_SEG_SIZE); |
a6a53252 JY |
2401 | err = register_netdev(netdev); |
2402 | if (err) { | |
ba211e3e | 2403 | netdev_err(netdev, "register netdevice failed\n"); |
a6a53252 JY |
2404 | goto err_register; |
2405 | } | |
2406 | ||
2407 | /* assume we have no link for now */ | |
2408 | netif_stop_queue(netdev); | |
2409 | netif_carrier_off(netdev); | |
2410 | ||
2411 | cards_found++; | |
2412 | ||
2413 | return 0; | |
2414 | ||
2415 | err_reset: | |
2416 | err_register: | |
2417 | err_sw_init: | |
2418 | err_eeprom: | |
3e3d3540 | 2419 | pci_iounmap(pdev, adapter->hw.hw_addr); |
a6a53252 JY |
2420 | err_init_netdev: |
2421 | err_ioremap: | |
2422 | free_netdev(netdev); | |
2423 | err_alloc_etherdev: | |
2424 | pci_release_regions(pdev); | |
2425 | err_pci_reg: | |
2426 | err_dma: | |
2427 | pci_disable_device(pdev); | |
2428 | return err; | |
2429 | } | |
2430 | ||
49ce9c2c | 2431 | /** |
a6a53252 JY |
2432 | * atl1e_remove - Device Removal Routine |
2433 | * @pdev: PCI device information struct | |
2434 | * | |
2435 | * atl1e_remove is called by the PCI subsystem to alert the driver | |
2436 | * that it should release a PCI device. The could be caused by a | |
2437 | * Hot-Plug event, or because the driver is going to be removed from | |
2438 | * memory. | |
2439 | */ | |
093d369d | 2440 | static void atl1e_remove(struct pci_dev *pdev) |
a6a53252 JY |
2441 | { |
2442 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2443 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
2444 | ||
2445 | /* | |
2446 | * flush_scheduled work may reschedule our watchdog task, so | |
2447 | * explicitly disable watchdog tasks from being rescheduled | |
2448 | */ | |
2449 | set_bit(__AT_DOWN, &adapter->flags); | |
2450 | ||
2451 | atl1e_del_timer(adapter); | |
2452 | atl1e_cancel_work(adapter); | |
2453 | ||
2454 | unregister_netdev(netdev); | |
2455 | atl1e_free_ring_resources(adapter); | |
2456 | atl1e_force_ps(&adapter->hw); | |
3e3d3540 | 2457 | pci_iounmap(pdev, adapter->hw.hw_addr); |
a6a53252 JY |
2458 | pci_release_regions(pdev); |
2459 | free_netdev(netdev); | |
2460 | pci_disable_device(pdev); | |
2461 | } | |
2462 | ||
49ce9c2c | 2463 | /** |
a6a53252 JY |
2464 | * atl1e_io_error_detected - called when PCI error is detected |
2465 | * @pdev: Pointer to PCI device | |
2466 | * @state: The current pci connection state | |
2467 | * | |
2468 | * This function is called after a PCI bus error affecting | |
2469 | * this device has been detected. | |
2470 | */ | |
2471 | static pci_ers_result_t | |
2472 | atl1e_io_error_detected(struct pci_dev *pdev, pci_channel_state_t state) | |
2473 | { | |
2474 | struct net_device *netdev = pci_get_drvdata(pdev); | |
454d7c9b | 2475 | struct atl1e_adapter *adapter = netdev_priv(netdev); |
a6a53252 JY |
2476 | |
2477 | netif_device_detach(netdev); | |
2478 | ||
0d6ab58d DN |
2479 | if (state == pci_channel_io_perm_failure) |
2480 | return PCI_ERS_RESULT_DISCONNECT; | |
2481 | ||
a6a53252 JY |
2482 | if (netif_running(netdev)) |
2483 | atl1e_down(adapter); | |
2484 | ||
2485 | pci_disable_device(pdev); | |
2486 | ||
2487 | /* Request a slot slot reset. */ | |
2488 | return PCI_ERS_RESULT_NEED_RESET; | |
2489 | } | |
2490 | ||
49ce9c2c | 2491 | /** |
a6a53252 JY |
2492 | * atl1e_io_slot_reset - called after the pci bus has been reset. |
2493 | * @pdev: Pointer to PCI device | |
2494 | * | |
2495 | * Restart the card from scratch, as if from a cold-boot. Implementation | |
2496 | * resembles the first-half of the e1000_resume routine. | |
2497 | */ | |
2498 | static pci_ers_result_t atl1e_io_slot_reset(struct pci_dev *pdev) | |
2499 | { | |
2500 | struct net_device *netdev = pci_get_drvdata(pdev); | |
454d7c9b | 2501 | struct atl1e_adapter *adapter = netdev_priv(netdev); |
a6a53252 JY |
2502 | |
2503 | if (pci_enable_device(pdev)) { | |
ba211e3e JP |
2504 | netdev_err(adapter->netdev, |
2505 | "Cannot re-enable PCI device after reset\n"); | |
a6a53252 JY |
2506 | return PCI_ERS_RESULT_DISCONNECT; |
2507 | } | |
2508 | pci_set_master(pdev); | |
2509 | ||
2510 | pci_enable_wake(pdev, PCI_D3hot, 0); | |
2511 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
2512 | ||
2513 | atl1e_reset_hw(&adapter->hw); | |
2514 | ||
2515 | return PCI_ERS_RESULT_RECOVERED; | |
2516 | } | |
2517 | ||
49ce9c2c | 2518 | /** |
a6a53252 JY |
2519 | * atl1e_io_resume - called when traffic can start flowing again. |
2520 | * @pdev: Pointer to PCI device | |
2521 | * | |
2522 | * This callback is called when the error recovery driver tells us that | |
2523 | * its OK to resume normal operation. Implementation resembles the | |
2524 | * second-half of the atl1e_resume routine. | |
2525 | */ | |
2526 | static void atl1e_io_resume(struct pci_dev *pdev) | |
2527 | { | |
2528 | struct net_device *netdev = pci_get_drvdata(pdev); | |
454d7c9b | 2529 | struct atl1e_adapter *adapter = netdev_priv(netdev); |
a6a53252 JY |
2530 | |
2531 | if (netif_running(netdev)) { | |
2532 | if (atl1e_up(adapter)) { | |
ba211e3e JP |
2533 | netdev_err(adapter->netdev, |
2534 | "can't bring device back up after reset\n"); | |
a6a53252 JY |
2535 | return; |
2536 | } | |
2537 | } | |
2538 | ||
2539 | netif_device_attach(netdev); | |
2540 | } | |
2541 | ||
3646f0e5 | 2542 | static const struct pci_error_handlers atl1e_err_handler = { |
a6a53252 JY |
2543 | .error_detected = atl1e_io_error_detected, |
2544 | .slot_reset = atl1e_io_slot_reset, | |
2545 | .resume = atl1e_io_resume, | |
2546 | }; | |
2547 | ||
2548 | static struct pci_driver atl1e_driver = { | |
2549 | .name = atl1e_driver_name, | |
2550 | .id_table = atl1e_pci_tbl, | |
2551 | .probe = atl1e_probe, | |
093d369d | 2552 | .remove = atl1e_remove, |
25985edc | 2553 | /* Power Management Hooks */ |
a6a53252 JY |
2554 | #ifdef CONFIG_PM |
2555 | .suspend = atl1e_suspend, | |
2556 | .resume = atl1e_resume, | |
2557 | #endif | |
2558 | .shutdown = atl1e_shutdown, | |
2559 | .err_handler = &atl1e_err_handler | |
2560 | }; | |
2561 | ||
687df5d4 | 2562 | module_pci_driver(atl1e_driver); |