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 | ||
11 | #define DRV_VERSION "1.0.0.7-NAPI" | |
12 | ||
13 | char atl1e_driver_name[] = "ATL1E"; | |
14 | char atl1e_driver_version[] = DRV_VERSION; | |
15 | #define PCI_DEVICE_ID_ATTANSIC_L1E 0x1026 | |
16 | /* | |
17 | * atl1e_pci_tbl - PCI Device ID Table | |
18 | * | |
19 | * Wildcard entries (PCI_ANY_ID) should come last | |
20 | * Last entry must be all 0s | |
21 | * | |
22 | * { Vendor ID, Device ID, SubVendor ID, SubDevice ID, | |
23 | * Class, Class Mask, private data (not used) } | |
24 | */ | |
9baa3c34 | 25 | static const struct pci_device_id atl1e_pci_tbl[] = { |
a6a53252 | 26 | {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC, PCI_DEVICE_ID_ATTANSIC_L1E)}, |
bdb0e010 | 27 | {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC, 0x1066)}, |
a6a53252 JY |
28 | /* required last entry */ |
29 | { 0 } | |
30 | }; | |
31 | MODULE_DEVICE_TABLE(pci, atl1e_pci_tbl); | |
32 | ||
33 | MODULE_AUTHOR("Atheros Corporation, <xiong.huang@atheros.com>, Jie Yang <jie.yang@atheros.com>"); | |
34 | MODULE_DESCRIPTION("Atheros 1000M Ethernet Network Driver"); | |
35 | MODULE_LICENSE("GPL"); | |
36 | MODULE_VERSION(DRV_VERSION); | |
37 | ||
e6ca2328 | 38 | static void atl1e_setup_mac_ctrl(struct atl1e_adapter *adapter); |
a6a53252 JY |
39 | |
40 | static const u16 | |
41 | atl1e_rx_page_vld_regs[AT_MAX_RECEIVE_QUEUE][AT_PAGE_NUM_PER_QUEUE] = | |
42 | { | |
43 | {REG_HOST_RXF0_PAGE0_VLD, REG_HOST_RXF0_PAGE1_VLD}, | |
44 | {REG_HOST_RXF1_PAGE0_VLD, REG_HOST_RXF1_PAGE1_VLD}, | |
45 | {REG_HOST_RXF2_PAGE0_VLD, REG_HOST_RXF2_PAGE1_VLD}, | |
46 | {REG_HOST_RXF3_PAGE0_VLD, REG_HOST_RXF3_PAGE1_VLD} | |
47 | }; | |
48 | ||
49 | static const u16 atl1e_rx_page_hi_addr_regs[AT_MAX_RECEIVE_QUEUE] = | |
50 | { | |
51 | REG_RXF0_BASE_ADDR_HI, | |
52 | REG_RXF1_BASE_ADDR_HI, | |
53 | REG_RXF2_BASE_ADDR_HI, | |
54 | REG_RXF3_BASE_ADDR_HI | |
55 | }; | |
56 | ||
57 | static const u16 | |
58 | atl1e_rx_page_lo_addr_regs[AT_MAX_RECEIVE_QUEUE][AT_PAGE_NUM_PER_QUEUE] = | |
59 | { | |
60 | {REG_HOST_RXF0_PAGE0_LO, REG_HOST_RXF0_PAGE1_LO}, | |
61 | {REG_HOST_RXF1_PAGE0_LO, REG_HOST_RXF1_PAGE1_LO}, | |
62 | {REG_HOST_RXF2_PAGE0_LO, REG_HOST_RXF2_PAGE1_LO}, | |
63 | {REG_HOST_RXF3_PAGE0_LO, REG_HOST_RXF3_PAGE1_LO} | |
64 | }; | |
65 | ||
66 | static const u16 | |
67 | atl1e_rx_page_write_offset_regs[AT_MAX_RECEIVE_QUEUE][AT_PAGE_NUM_PER_QUEUE] = | |
68 | { | |
69 | {REG_HOST_RXF0_MB0_LO, REG_HOST_RXF0_MB1_LO}, | |
70 | {REG_HOST_RXF1_MB0_LO, REG_HOST_RXF1_MB1_LO}, | |
71 | {REG_HOST_RXF2_MB0_LO, REG_HOST_RXF2_MB1_LO}, | |
72 | {REG_HOST_RXF3_MB0_LO, REG_HOST_RXF3_MB1_LO} | |
73 | }; | |
74 | ||
75 | static const u16 atl1e_pay_load_size[] = { | |
76 | 128, 256, 512, 1024, 2048, 4096, | |
77 | }; | |
78 | ||
49ce9c2c | 79 | /** |
a6a53252 JY |
80 | * atl1e_irq_enable - Enable default interrupt generation settings |
81 | * @adapter: board private structure | |
82 | */ | |
83 | static inline void atl1e_irq_enable(struct atl1e_adapter *adapter) | |
84 | { | |
85 | if (likely(atomic_dec_and_test(&adapter->irq_sem))) { | |
86 | AT_WRITE_REG(&adapter->hw, REG_ISR, 0); | |
87 | AT_WRITE_REG(&adapter->hw, REG_IMR, IMR_NORMAL_MASK); | |
88 | AT_WRITE_FLUSH(&adapter->hw); | |
89 | } | |
90 | } | |
91 | ||
49ce9c2c | 92 | /** |
a6a53252 JY |
93 | * atl1e_irq_disable - Mask off interrupt generation on the NIC |
94 | * @adapter: board private structure | |
95 | */ | |
96 | static inline void atl1e_irq_disable(struct atl1e_adapter *adapter) | |
97 | { | |
98 | atomic_inc(&adapter->irq_sem); | |
99 | AT_WRITE_REG(&adapter->hw, REG_IMR, 0); | |
100 | AT_WRITE_FLUSH(&adapter->hw); | |
101 | synchronize_irq(adapter->pdev->irq); | |
102 | } | |
103 | ||
49ce9c2c | 104 | /** |
a6a53252 JY |
105 | * atl1e_irq_reset - reset interrupt confiure on the NIC |
106 | * @adapter: board private structure | |
107 | */ | |
108 | static inline void atl1e_irq_reset(struct atl1e_adapter *adapter) | |
109 | { | |
110 | atomic_set(&adapter->irq_sem, 0); | |
111 | AT_WRITE_REG(&adapter->hw, REG_ISR, 0); | |
112 | AT_WRITE_REG(&adapter->hw, REG_IMR, 0); | |
113 | AT_WRITE_FLUSH(&adapter->hw); | |
114 | } | |
115 | ||
49ce9c2c | 116 | /** |
a6a53252 JY |
117 | * atl1e_phy_config - Timer Call-back |
118 | * @data: pointer to netdev cast into an unsigned long | |
119 | */ | |
e99e88a9 | 120 | static void atl1e_phy_config(struct timer_list *t) |
a6a53252 | 121 | { |
e99e88a9 KC |
122 | struct atl1e_adapter *adapter = from_timer(adapter, t, |
123 | phy_config_timer); | |
a6a53252 JY |
124 | struct atl1e_hw *hw = &adapter->hw; |
125 | unsigned long flags; | |
126 | ||
127 | spin_lock_irqsave(&adapter->mdio_lock, flags); | |
128 | atl1e_restart_autoneg(hw); | |
129 | spin_unlock_irqrestore(&adapter->mdio_lock, flags); | |
130 | } | |
131 | ||
132 | void atl1e_reinit_locked(struct atl1e_adapter *adapter) | |
133 | { | |
134 | ||
135 | WARN_ON(in_interrupt()); | |
136 | while (test_and_set_bit(__AT_RESETTING, &adapter->flags)) | |
137 | msleep(1); | |
138 | atl1e_down(adapter); | |
139 | atl1e_up(adapter); | |
140 | clear_bit(__AT_RESETTING, &adapter->flags); | |
141 | } | |
142 | ||
143 | static void atl1e_reset_task(struct work_struct *work) | |
144 | { | |
145 | struct atl1e_adapter *adapter; | |
146 | adapter = container_of(work, struct atl1e_adapter, reset_task); | |
147 | ||
148 | atl1e_reinit_locked(adapter); | |
149 | } | |
150 | ||
151 | static int atl1e_check_link(struct atl1e_adapter *adapter) | |
152 | { | |
153 | struct atl1e_hw *hw = &adapter->hw; | |
154 | struct net_device *netdev = adapter->netdev; | |
a6a53252 JY |
155 | int err = 0; |
156 | u16 speed, duplex, phy_data; | |
157 | ||
ba211e3e | 158 | /* MII_BMSR must read twice */ |
a6a53252 JY |
159 | atl1e_read_phy_reg(hw, MII_BMSR, &phy_data); |
160 | atl1e_read_phy_reg(hw, MII_BMSR, &phy_data); | |
161 | if ((phy_data & BMSR_LSTATUS) == 0) { | |
162 | /* link down */ | |
163 | if (netif_carrier_ok(netdev)) { /* old link state: Up */ | |
164 | u32 value; | |
165 | /* disable rx */ | |
166 | value = AT_READ_REG(hw, REG_MAC_CTRL); | |
167 | value &= ~MAC_CTRL_RX_EN; | |
168 | AT_WRITE_REG(hw, REG_MAC_CTRL, value); | |
169 | adapter->link_speed = SPEED_0; | |
170 | netif_carrier_off(netdev); | |
171 | netif_stop_queue(netdev); | |
172 | } | |
173 | } else { | |
174 | /* Link Up */ | |
175 | err = atl1e_get_speed_and_duplex(hw, &speed, &duplex); | |
176 | if (unlikely(err)) | |
177 | return err; | |
178 | ||
179 | /* link result is our setting */ | |
180 | if (adapter->link_speed != speed || | |
181 | adapter->link_duplex != duplex) { | |
182 | adapter->link_speed = speed; | |
183 | adapter->link_duplex = duplex; | |
184 | atl1e_setup_mac_ctrl(adapter); | |
ba211e3e JP |
185 | netdev_info(netdev, |
186 | "NIC Link is Up <%d Mbps %s Duplex>\n", | |
187 | adapter->link_speed, | |
188 | adapter->link_duplex == FULL_DUPLEX ? | |
189 | "Full" : "Half"); | |
a6a53252 JY |
190 | } |
191 | ||
192 | if (!netif_carrier_ok(netdev)) { | |
193 | /* Link down -> Up */ | |
194 | netif_carrier_on(netdev); | |
195 | netif_wake_queue(netdev); | |
196 | } | |
197 | } | |
198 | return 0; | |
199 | } | |
200 | ||
49ce9c2c | 201 | /** |
a6a53252 JY |
202 | * atl1e_link_chg_task - deal with link change event Out of interrupt context |
203 | * @netdev: network interface device structure | |
204 | */ | |
205 | static void atl1e_link_chg_task(struct work_struct *work) | |
206 | { | |
207 | struct atl1e_adapter *adapter; | |
208 | unsigned long flags; | |
209 | ||
210 | adapter = container_of(work, struct atl1e_adapter, link_chg_task); | |
211 | spin_lock_irqsave(&adapter->mdio_lock, flags); | |
212 | atl1e_check_link(adapter); | |
213 | spin_unlock_irqrestore(&adapter->mdio_lock, flags); | |
214 | } | |
215 | ||
216 | static void atl1e_link_chg_event(struct atl1e_adapter *adapter) | |
217 | { | |
218 | struct net_device *netdev = adapter->netdev; | |
a6a53252 JY |
219 | u16 phy_data = 0; |
220 | u16 link_up = 0; | |
221 | ||
222 | spin_lock(&adapter->mdio_lock); | |
223 | atl1e_read_phy_reg(&adapter->hw, MII_BMSR, &phy_data); | |
224 | atl1e_read_phy_reg(&adapter->hw, MII_BMSR, &phy_data); | |
225 | spin_unlock(&adapter->mdio_lock); | |
226 | link_up = phy_data & BMSR_LSTATUS; | |
227 | /* notify upper layer link down ASAP */ | |
228 | if (!link_up) { | |
229 | if (netif_carrier_ok(netdev)) { | |
230 | /* old link state: Up */ | |
ba211e3e | 231 | netdev_info(netdev, "NIC Link is Down\n"); |
a6a53252 JY |
232 | adapter->link_speed = SPEED_0; |
233 | netif_stop_queue(netdev); | |
234 | } | |
235 | } | |
236 | schedule_work(&adapter->link_chg_task); | |
237 | } | |
238 | ||
239 | static void atl1e_del_timer(struct atl1e_adapter *adapter) | |
240 | { | |
241 | del_timer_sync(&adapter->phy_config_timer); | |
242 | } | |
243 | ||
244 | static void atl1e_cancel_work(struct atl1e_adapter *adapter) | |
245 | { | |
246 | cancel_work_sync(&adapter->reset_task); | |
247 | cancel_work_sync(&adapter->link_chg_task); | |
248 | } | |
249 | ||
49ce9c2c | 250 | /** |
a6a53252 JY |
251 | * atl1e_tx_timeout - Respond to a Tx Hang |
252 | * @netdev: network interface device structure | |
253 | */ | |
0290bd29 | 254 | static void atl1e_tx_timeout(struct net_device *netdev, unsigned int txqueue) |
a6a53252 JY |
255 | { |
256 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
257 | ||
258 | /* Do the reset outside of interrupt context */ | |
259 | schedule_work(&adapter->reset_task); | |
260 | } | |
261 | ||
49ce9c2c | 262 | /** |
a6a53252 JY |
263 | * atl1e_set_multi - Multicast and Promiscuous mode set |
264 | * @netdev: network interface device structure | |
265 | * | |
266 | * The set_multi entry point is called whenever the multicast address | |
267 | * list or the network interface flags are updated. This routine is | |
268 | * responsible for configuring the hardware for proper multicast, | |
269 | * promiscuous mode, and all-multi behavior. | |
270 | */ | |
271 | static void atl1e_set_multi(struct net_device *netdev) | |
272 | { | |
273 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
274 | struct atl1e_hw *hw = &adapter->hw; | |
22bedad3 | 275 | struct netdev_hw_addr *ha; |
a6a53252 JY |
276 | u32 mac_ctrl_data = 0; |
277 | u32 hash_value; | |
278 | ||
279 | /* Check for Promiscuous and All Multicast modes */ | |
280 | mac_ctrl_data = AT_READ_REG(hw, REG_MAC_CTRL); | |
281 | ||
282 | if (netdev->flags & IFF_PROMISC) { | |
283 | mac_ctrl_data |= MAC_CTRL_PROMIS_EN; | |
284 | } else if (netdev->flags & IFF_ALLMULTI) { | |
285 | mac_ctrl_data |= MAC_CTRL_MC_ALL_EN; | |
286 | mac_ctrl_data &= ~MAC_CTRL_PROMIS_EN; | |
287 | } else { | |
288 | mac_ctrl_data &= ~(MAC_CTRL_PROMIS_EN | MAC_CTRL_MC_ALL_EN); | |
289 | } | |
290 | ||
291 | AT_WRITE_REG(hw, REG_MAC_CTRL, mac_ctrl_data); | |
292 | ||
293 | /* clear the old settings from the multicast hash table */ | |
294 | AT_WRITE_REG(hw, REG_RX_HASH_TABLE, 0); | |
295 | AT_WRITE_REG_ARRAY(hw, REG_RX_HASH_TABLE, 1, 0); | |
296 | ||
297 | /* comoute mc addresses' hash value ,and put it into hash table */ | |
22bedad3 JP |
298 | netdev_for_each_mc_addr(ha, netdev) { |
299 | hash_value = atl1e_hash_mc_addr(hw, ha->addr); | |
a6a53252 JY |
300 | atl1e_hash_set(hw, hash_value); |
301 | } | |
302 | } | |
303 | ||
40dc9ab2 AM |
304 | static void __atl1e_rx_mode(netdev_features_t features, u32 *mac_ctrl_data) |
305 | { | |
306 | ||
307 | if (features & NETIF_F_RXALL) { | |
308 | /* enable RX of ALL frames */ | |
309 | *mac_ctrl_data |= MAC_CTRL_DBG; | |
310 | } else { | |
311 | /* disable RX of ALL frames */ | |
312 | *mac_ctrl_data &= ~MAC_CTRL_DBG; | |
313 | } | |
314 | } | |
315 | ||
316 | static void atl1e_rx_mode(struct net_device *netdev, | |
317 | netdev_features_t features) | |
318 | { | |
319 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
320 | u32 mac_ctrl_data = 0; | |
321 | ||
322 | netdev_dbg(adapter->netdev, "%s\n", __func__); | |
323 | ||
324 | atl1e_irq_disable(adapter); | |
325 | mac_ctrl_data = AT_READ_REG(&adapter->hw, REG_MAC_CTRL); | |
326 | __atl1e_rx_mode(features, &mac_ctrl_data); | |
327 | AT_WRITE_REG(&adapter->hw, REG_MAC_CTRL, mac_ctrl_data); | |
328 | atl1e_irq_enable(adapter); | |
329 | } | |
330 | ||
331 | ||
c8f44aff | 332 | static void __atl1e_vlan_mode(netdev_features_t features, u32 *mac_ctrl_data) |
2707fffc | 333 | { |
f646968f | 334 | if (features & NETIF_F_HW_VLAN_CTAG_RX) { |
2707fffc JP |
335 | /* enable VLAN tag insert/strip */ |
336 | *mac_ctrl_data |= MAC_CTRL_RMV_VLAN; | |
337 | } else { | |
338 | /* disable VLAN tag insert/strip */ | |
339 | *mac_ctrl_data &= ~MAC_CTRL_RMV_VLAN; | |
340 | } | |
341 | } | |
342 | ||
c8f44aff MM |
343 | static void atl1e_vlan_mode(struct net_device *netdev, |
344 | netdev_features_t features) | |
a6a53252 JY |
345 | { |
346 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
a6a53252 JY |
347 | u32 mac_ctrl_data = 0; |
348 | ||
ba211e3e | 349 | netdev_dbg(adapter->netdev, "%s\n", __func__); |
a6a53252 JY |
350 | |
351 | atl1e_irq_disable(adapter); | |
a6a53252 | 352 | mac_ctrl_data = AT_READ_REG(&adapter->hw, REG_MAC_CTRL); |
2707fffc | 353 | __atl1e_vlan_mode(features, &mac_ctrl_data); |
a6a53252 JY |
354 | AT_WRITE_REG(&adapter->hw, REG_MAC_CTRL, mac_ctrl_data); |
355 | atl1e_irq_enable(adapter); | |
356 | } | |
357 | ||
358 | static void atl1e_restore_vlan(struct atl1e_adapter *adapter) | |
359 | { | |
ba211e3e | 360 | netdev_dbg(adapter->netdev, "%s\n", __func__); |
2707fffc | 361 | atl1e_vlan_mode(adapter->netdev, adapter->netdev->features); |
a6a53252 | 362 | } |
2707fffc | 363 | |
49ce9c2c | 364 | /** |
a6a53252 JY |
365 | * atl1e_set_mac - Change the Ethernet Address of the NIC |
366 | * @netdev: network interface device structure | |
367 | * @p: pointer to an address structure | |
368 | * | |
369 | * Returns 0 on success, negative on failure | |
370 | */ | |
371 | static int atl1e_set_mac_addr(struct net_device *netdev, void *p) | |
372 | { | |
373 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
374 | struct sockaddr *addr = p; | |
375 | ||
376 | if (!is_valid_ether_addr(addr->sa_data)) | |
377 | return -EADDRNOTAVAIL; | |
378 | ||
379 | if (netif_running(netdev)) | |
380 | return -EBUSY; | |
381 | ||
382 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
383 | memcpy(adapter->hw.mac_addr, addr->sa_data, netdev->addr_len); | |
384 | ||
385 | atl1e_hw_set_mac_addr(&adapter->hw); | |
386 | ||
387 | return 0; | |
388 | } | |
389 | ||
c8f44aff MM |
390 | static netdev_features_t atl1e_fix_features(struct net_device *netdev, |
391 | netdev_features_t features) | |
2707fffc JP |
392 | { |
393 | /* | |
394 | * Since there is no support for separate rx/tx vlan accel | |
395 | * enable/disable make sure tx flag is always in same state as rx. | |
396 | */ | |
f646968f PM |
397 | if (features & NETIF_F_HW_VLAN_CTAG_RX) |
398 | features |= NETIF_F_HW_VLAN_CTAG_TX; | |
2707fffc | 399 | else |
f646968f | 400 | features &= ~NETIF_F_HW_VLAN_CTAG_TX; |
2707fffc JP |
401 | |
402 | return features; | |
403 | } | |
404 | ||
c8f44aff MM |
405 | static int atl1e_set_features(struct net_device *netdev, |
406 | netdev_features_t features) | |
2707fffc | 407 | { |
c8f44aff | 408 | netdev_features_t changed = netdev->features ^ features; |
2707fffc | 409 | |
f646968f | 410 | if (changed & NETIF_F_HW_VLAN_CTAG_RX) |
2707fffc JP |
411 | atl1e_vlan_mode(netdev, features); |
412 | ||
40dc9ab2 AM |
413 | if (changed & NETIF_F_RXALL) |
414 | atl1e_rx_mode(netdev, features); | |
415 | ||
416 | ||
2707fffc JP |
417 | return 0; |
418 | } | |
419 | ||
49ce9c2c | 420 | /** |
a6a53252 JY |
421 | * atl1e_change_mtu - Change the Maximum Transfer Unit |
422 | * @netdev: network interface device structure | |
423 | * @new_mtu: new value for maximum frame size | |
424 | * | |
425 | * Returns 0 on success, negative on failure | |
426 | */ | |
427 | static int atl1e_change_mtu(struct net_device *netdev, int new_mtu) | |
428 | { | |
429 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
a6a53252 JY |
430 | int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN; |
431 | ||
a6a53252 | 432 | /* set MTU */ |
67bef942 | 433 | if (netif_running(netdev)) { |
a6a53252 JY |
434 | while (test_and_set_bit(__AT_RESETTING, &adapter->flags)) |
435 | msleep(1); | |
436 | netdev->mtu = new_mtu; | |
437 | adapter->hw.max_frame_size = new_mtu; | |
438 | adapter->hw.rx_jumbo_th = (max_frame + 7) >> 3; | |
439 | atl1e_down(adapter); | |
440 | atl1e_up(adapter); | |
441 | clear_bit(__AT_RESETTING, &adapter->flags); | |
442 | } | |
443 | return 0; | |
444 | } | |
445 | ||
446 | /* | |
447 | * caller should hold mdio_lock | |
448 | */ | |
449 | static int atl1e_mdio_read(struct net_device *netdev, int phy_id, int reg_num) | |
450 | { | |
451 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
452 | u16 result; | |
453 | ||
454 | atl1e_read_phy_reg(&adapter->hw, reg_num & MDIO_REG_ADDR_MASK, &result); | |
455 | return result; | |
456 | } | |
457 | ||
458 | static void atl1e_mdio_write(struct net_device *netdev, int phy_id, | |
459 | int reg_num, int val) | |
460 | { | |
461 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
462 | ||
ff07d48d KL |
463 | if (atl1e_write_phy_reg(&adapter->hw, |
464 | reg_num & MDIO_REG_ADDR_MASK, val)) | |
465 | netdev_err(netdev, "write phy register failed\n"); | |
a6a53252 JY |
466 | } |
467 | ||
a6a53252 JY |
468 | static int atl1e_mii_ioctl(struct net_device *netdev, |
469 | struct ifreq *ifr, int cmd) | |
470 | { | |
471 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
a6a53252 JY |
472 | struct mii_ioctl_data *data = if_mii(ifr); |
473 | unsigned long flags; | |
474 | int retval = 0; | |
475 | ||
476 | if (!netif_running(netdev)) | |
477 | return -EINVAL; | |
478 | ||
479 | spin_lock_irqsave(&adapter->mdio_lock, flags); | |
480 | switch (cmd) { | |
481 | case SIOCGMIIPHY: | |
482 | data->phy_id = 0; | |
483 | break; | |
484 | ||
485 | case SIOCGMIIREG: | |
a6a53252 JY |
486 | if (atl1e_read_phy_reg(&adapter->hw, data->reg_num & 0x1F, |
487 | &data->val_out)) { | |
488 | retval = -EIO; | |
489 | goto out; | |
490 | } | |
491 | break; | |
492 | ||
493 | case SIOCSMIIREG: | |
a6a53252 JY |
494 | if (data->reg_num & ~(0x1F)) { |
495 | retval = -EFAULT; | |
496 | goto out; | |
497 | } | |
498 | ||
ba211e3e JP |
499 | netdev_dbg(adapter->netdev, "<atl1e_mii_ioctl> write %x %x\n", |
500 | data->reg_num, data->val_in); | |
a6a53252 JY |
501 | if (atl1e_write_phy_reg(&adapter->hw, |
502 | data->reg_num, data->val_in)) { | |
503 | retval = -EIO; | |
504 | goto out; | |
505 | } | |
506 | break; | |
507 | ||
508 | default: | |
509 | retval = -EOPNOTSUPP; | |
510 | break; | |
511 | } | |
512 | out: | |
513 | spin_unlock_irqrestore(&adapter->mdio_lock, flags); | |
514 | return retval; | |
515 | ||
516 | } | |
517 | ||
a6a53252 JY |
518 | static int atl1e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) |
519 | { | |
520 | switch (cmd) { | |
521 | case SIOCGMIIPHY: | |
522 | case SIOCGMIIREG: | |
523 | case SIOCSMIIREG: | |
524 | return atl1e_mii_ioctl(netdev, ifr, cmd); | |
525 | default: | |
526 | return -EOPNOTSUPP; | |
527 | } | |
528 | } | |
529 | ||
530 | static void atl1e_setup_pcicmd(struct pci_dev *pdev) | |
531 | { | |
532 | u16 cmd; | |
533 | ||
534 | pci_read_config_word(pdev, PCI_COMMAND, &cmd); | |
535 | cmd &= ~(PCI_COMMAND_INTX_DISABLE | PCI_COMMAND_IO); | |
536 | cmd |= (PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER); | |
537 | pci_write_config_word(pdev, PCI_COMMAND, cmd); | |
538 | ||
539 | /* | |
540 | * some motherboards BIOS(PXE/EFI) driver may set PME | |
541 | * while they transfer control to OS (Windows/Linux) | |
542 | * so we should clear this bit before NIC work normally | |
543 | */ | |
544 | pci_write_config_dword(pdev, REG_PM_CTRLSTAT, 0); | |
545 | msleep(1); | |
546 | } | |
547 | ||
49ce9c2c | 548 | /** |
a6a53252 JY |
549 | * atl1e_alloc_queues - Allocate memory for all rings |
550 | * @adapter: board private structure to initialize | |
551 | * | |
552 | */ | |
093d369d | 553 | static int atl1e_alloc_queues(struct atl1e_adapter *adapter) |
a6a53252 JY |
554 | { |
555 | return 0; | |
556 | } | |
557 | ||
49ce9c2c | 558 | /** |
a6a53252 JY |
559 | * atl1e_sw_init - Initialize general software structures (struct atl1e_adapter) |
560 | * @adapter: board private structure to initialize | |
561 | * | |
562 | * atl1e_sw_init initializes the Adapter private data structure. | |
563 | * Fields are initialized based on PCI device information and | |
564 | * OS network device settings (MTU size). | |
565 | */ | |
093d369d | 566 | static int atl1e_sw_init(struct atl1e_adapter *adapter) |
a6a53252 JY |
567 | { |
568 | struct atl1e_hw *hw = &adapter->hw; | |
569 | struct pci_dev *pdev = adapter->pdev; | |
570 | u32 phy_status_data = 0; | |
571 | ||
572 | adapter->wol = 0; | |
573 | adapter->link_speed = SPEED_0; /* hardware init */ | |
574 | adapter->link_duplex = FULL_DUPLEX; | |
575 | adapter->num_rx_queues = 1; | |
576 | ||
577 | /* PCI config space info */ | |
578 | hw->vendor_id = pdev->vendor; | |
579 | hw->device_id = pdev->device; | |
580 | hw->subsystem_vendor_id = pdev->subsystem_vendor; | |
581 | hw->subsystem_id = pdev->subsystem_device; | |
ff938e43 | 582 | hw->revision_id = pdev->revision; |
a6a53252 | 583 | |
a6a53252 JY |
584 | pci_read_config_word(pdev, PCI_COMMAND, &hw->pci_cmd_word); |
585 | ||
586 | phy_status_data = AT_READ_REG(hw, REG_PHY_STATUS); | |
587 | /* nic type */ | |
588 | if (hw->revision_id >= 0xF0) { | |
589 | hw->nic_type = athr_l2e_revB; | |
590 | } else { | |
591 | if (phy_status_data & PHY_STATUS_100M) | |
592 | hw->nic_type = athr_l1e; | |
593 | else | |
594 | hw->nic_type = athr_l2e_revA; | |
595 | } | |
596 | ||
597 | phy_status_data = AT_READ_REG(hw, REG_PHY_STATUS); | |
598 | ||
599 | if (phy_status_data & PHY_STATUS_EMI_CA) | |
600 | hw->emi_ca = true; | |
601 | else | |
602 | hw->emi_ca = false; | |
603 | ||
604 | hw->phy_configured = false; | |
605 | hw->preamble_len = 7; | |
606 | hw->max_frame_size = adapter->netdev->mtu; | |
607 | hw->rx_jumbo_th = (hw->max_frame_size + ETH_HLEN + | |
608 | VLAN_HLEN + ETH_FCS_LEN + 7) >> 3; | |
609 | ||
610 | hw->rrs_type = atl1e_rrs_disable; | |
611 | hw->indirect_tab = 0; | |
612 | hw->base_cpu = 0; | |
613 | ||
614 | /* need confirm */ | |
615 | ||
616 | hw->ict = 50000; /* 100ms */ | |
617 | hw->smb_timer = 200000; /* 200ms */ | |
618 | hw->tpd_burst = 5; | |
619 | hw->rrd_thresh = 1; | |
620 | hw->tpd_thresh = adapter->tx_ring.count / 2; | |
621 | hw->rx_count_down = 4; /* 2us resolution */ | |
622 | hw->tx_count_down = hw->imt * 4 / 3; | |
623 | hw->dmar_block = atl1e_dma_req_1024; | |
624 | hw->dmaw_block = atl1e_dma_req_1024; | |
625 | hw->dmar_dly_cnt = 15; | |
626 | hw->dmaw_dly_cnt = 4; | |
627 | ||
628 | if (atl1e_alloc_queues(adapter)) { | |
ba211e3e | 629 | netdev_err(adapter->netdev, "Unable to allocate memory for queues\n"); |
a6a53252 JY |
630 | return -ENOMEM; |
631 | } | |
632 | ||
633 | atomic_set(&adapter->irq_sem, 1); | |
634 | spin_lock_init(&adapter->mdio_lock); | |
a6a53252 JY |
635 | |
636 | set_bit(__AT_DOWN, &adapter->flags); | |
637 | ||
638 | return 0; | |
639 | } | |
640 | ||
49ce9c2c | 641 | /** |
a6a53252 JY |
642 | * atl1e_clean_tx_ring - Free Tx-skb |
643 | * @adapter: board private structure | |
644 | */ | |
645 | static void atl1e_clean_tx_ring(struct atl1e_adapter *adapter) | |
646 | { | |
64699336 | 647 | struct atl1e_tx_ring *tx_ring = &adapter->tx_ring; |
a6a53252 JY |
648 | struct atl1e_tx_buffer *tx_buffer = NULL; |
649 | struct pci_dev *pdev = adapter->pdev; | |
650 | u16 index, ring_count; | |
651 | ||
652 | if (tx_ring->desc == NULL || tx_ring->tx_buffer == NULL) | |
653 | return; | |
654 | ||
655 | ring_count = tx_ring->count; | |
656 | /* first unmmap dma */ | |
657 | for (index = 0; index < ring_count; index++) { | |
658 | tx_buffer = &tx_ring->tx_buffer[index]; | |
659 | if (tx_buffer->dma) { | |
03f18991 JY |
660 | if (tx_buffer->flags & ATL1E_TX_PCIMAP_SINGLE) |
661 | pci_unmap_single(pdev, tx_buffer->dma, | |
662 | tx_buffer->length, PCI_DMA_TODEVICE); | |
663 | else if (tx_buffer->flags & ATL1E_TX_PCIMAP_PAGE) | |
664 | pci_unmap_page(pdev, tx_buffer->dma, | |
a6a53252 JY |
665 | tx_buffer->length, PCI_DMA_TODEVICE); |
666 | tx_buffer->dma = 0; | |
667 | } | |
668 | } | |
669 | /* second free skb */ | |
670 | for (index = 0; index < ring_count; index++) { | |
671 | tx_buffer = &tx_ring->tx_buffer[index]; | |
672 | if (tx_buffer->skb) { | |
673 | dev_kfree_skb_any(tx_buffer->skb); | |
674 | tx_buffer->skb = NULL; | |
675 | } | |
676 | } | |
677 | /* Zero out Tx-buffers */ | |
678 | memset(tx_ring->desc, 0, sizeof(struct atl1e_tpd_desc) * | |
679 | ring_count); | |
680 | memset(tx_ring->tx_buffer, 0, sizeof(struct atl1e_tx_buffer) * | |
681 | ring_count); | |
682 | } | |
683 | ||
49ce9c2c | 684 | /** |
a6a53252 JY |
685 | * atl1e_clean_rx_ring - Free rx-reservation skbs |
686 | * @adapter: board private structure | |
687 | */ | |
688 | static void atl1e_clean_rx_ring(struct atl1e_adapter *adapter) | |
689 | { | |
690 | struct atl1e_rx_ring *rx_ring = | |
64699336 | 691 | &adapter->rx_ring; |
a6a53252 JY |
692 | struct atl1e_rx_page_desc *rx_page_desc = rx_ring->rx_page_desc; |
693 | u16 i, j; | |
694 | ||
695 | ||
696 | if (adapter->ring_vir_addr == NULL) | |
697 | return; | |
698 | /* Zero out the descriptor ring */ | |
699 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
700 | for (j = 0; j < AT_PAGE_NUM_PER_QUEUE; j++) { | |
701 | if (rx_page_desc[i].rx_page[j].addr != NULL) { | |
702 | memset(rx_page_desc[i].rx_page[j].addr, 0, | |
703 | rx_ring->real_page_size); | |
704 | } | |
705 | } | |
706 | } | |
707 | } | |
708 | ||
709 | static void atl1e_cal_ring_size(struct atl1e_adapter *adapter, u32 *ring_size) | |
710 | { | |
711 | *ring_size = ((u32)(adapter->tx_ring.count * | |
712 | sizeof(struct atl1e_tpd_desc) + 7 | |
713 | /* tx ring, qword align */ | |
714 | + adapter->rx_ring.real_page_size * AT_PAGE_NUM_PER_QUEUE * | |
715 | adapter->num_rx_queues + 31 | |
716 | /* rx ring, 32 bytes align */ | |
717 | + (1 + AT_PAGE_NUM_PER_QUEUE * adapter->num_rx_queues) * | |
718 | sizeof(u32) + 3)); | |
719 | /* tx, rx cmd, dword align */ | |
720 | } | |
721 | ||
722 | static void atl1e_init_ring_resources(struct atl1e_adapter *adapter) | |
723 | { | |
a6a53252 JY |
724 | struct atl1e_rx_ring *rx_ring = NULL; |
725 | ||
a6a53252 JY |
726 | rx_ring = &adapter->rx_ring; |
727 | ||
728 | rx_ring->real_page_size = adapter->rx_ring.page_size | |
729 | + adapter->hw.max_frame_size | |
730 | + ETH_HLEN + VLAN_HLEN | |
731 | + ETH_FCS_LEN; | |
732 | rx_ring->real_page_size = roundup(rx_ring->real_page_size, 32); | |
733 | atl1e_cal_ring_size(adapter, &adapter->ring_size); | |
734 | ||
735 | adapter->ring_vir_addr = NULL; | |
736 | adapter->rx_ring.desc = NULL; | |
737 | rwlock_init(&adapter->tx_ring.tx_lock); | |
a6a53252 JY |
738 | } |
739 | ||
740 | /* | |
741 | * Read / Write Ptr Initialize: | |
742 | */ | |
743 | static void atl1e_init_ring_ptrs(struct atl1e_adapter *adapter) | |
744 | { | |
745 | struct atl1e_tx_ring *tx_ring = NULL; | |
746 | struct atl1e_rx_ring *rx_ring = NULL; | |
747 | struct atl1e_rx_page_desc *rx_page_desc = NULL; | |
748 | int i, j; | |
749 | ||
750 | tx_ring = &adapter->tx_ring; | |
751 | rx_ring = &adapter->rx_ring; | |
752 | rx_page_desc = rx_ring->rx_page_desc; | |
753 | ||
754 | tx_ring->next_to_use = 0; | |
755 | atomic_set(&tx_ring->next_to_clean, 0); | |
756 | ||
757 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
758 | rx_page_desc[i].rx_using = 0; | |
759 | rx_page_desc[i].rx_nxseq = 0; | |
760 | for (j = 0; j < AT_PAGE_NUM_PER_QUEUE; j++) { | |
761 | *rx_page_desc[i].rx_page[j].write_offset_addr = 0; | |
762 | rx_page_desc[i].rx_page[j].read_offset = 0; | |
763 | } | |
764 | } | |
765 | } | |
766 | ||
49ce9c2c | 767 | /** |
a6a53252 JY |
768 | * atl1e_free_ring_resources - Free Tx / RX descriptor Resources |
769 | * @adapter: board private structure | |
770 | * | |
771 | * Free all transmit software resources | |
772 | */ | |
773 | static void atl1e_free_ring_resources(struct atl1e_adapter *adapter) | |
774 | { | |
775 | struct pci_dev *pdev = adapter->pdev; | |
776 | ||
777 | atl1e_clean_tx_ring(adapter); | |
778 | atl1e_clean_rx_ring(adapter); | |
779 | ||
780 | if (adapter->ring_vir_addr) { | |
781 | pci_free_consistent(pdev, adapter->ring_size, | |
782 | adapter->ring_vir_addr, adapter->ring_dma); | |
783 | adapter->ring_vir_addr = NULL; | |
784 | } | |
785 | ||
786 | if (adapter->tx_ring.tx_buffer) { | |
787 | kfree(adapter->tx_ring.tx_buffer); | |
788 | adapter->tx_ring.tx_buffer = NULL; | |
789 | } | |
790 | } | |
791 | ||
49ce9c2c | 792 | /** |
a6a53252 JY |
793 | * atl1e_setup_mem_resources - allocate Tx / RX descriptor resources |
794 | * @adapter: board private structure | |
795 | * | |
796 | * Return 0 on success, negative on failure | |
797 | */ | |
798 | static int atl1e_setup_ring_resources(struct atl1e_adapter *adapter) | |
799 | { | |
800 | struct pci_dev *pdev = adapter->pdev; | |
801 | struct atl1e_tx_ring *tx_ring; | |
802 | struct atl1e_rx_ring *rx_ring; | |
803 | struct atl1e_rx_page_desc *rx_page_desc; | |
804 | int size, i, j; | |
805 | u32 offset = 0; | |
806 | int err = 0; | |
807 | ||
808 | if (adapter->ring_vir_addr != NULL) | |
809 | return 0; /* alloced already */ | |
810 | ||
811 | tx_ring = &adapter->tx_ring; | |
812 | rx_ring = &adapter->rx_ring; | |
813 | ||
814 | /* real ring DMA buffer */ | |
815 | ||
816 | size = adapter->ring_size; | |
19118268 JP |
817 | adapter->ring_vir_addr = pci_zalloc_consistent(pdev, adapter->ring_size, |
818 | &adapter->ring_dma); | |
a6a53252 | 819 | if (adapter->ring_vir_addr == NULL) { |
ba211e3e JP |
820 | netdev_err(adapter->netdev, |
821 | "pci_alloc_consistent failed, size = D%d\n", size); | |
a6a53252 JY |
822 | return -ENOMEM; |
823 | } | |
824 | ||
a6a53252 JY |
825 | rx_page_desc = rx_ring->rx_page_desc; |
826 | ||
827 | /* Init TPD Ring */ | |
828 | tx_ring->dma = roundup(adapter->ring_dma, 8); | |
829 | offset = tx_ring->dma - adapter->ring_dma; | |
43d620c8 | 830 | tx_ring->desc = adapter->ring_vir_addr + offset; |
a6a53252 JY |
831 | size = sizeof(struct atl1e_tx_buffer) * (tx_ring->count); |
832 | tx_ring->tx_buffer = kzalloc(size, GFP_KERNEL); | |
833 | if (tx_ring->tx_buffer == NULL) { | |
a6a53252 JY |
834 | err = -ENOMEM; |
835 | goto failed; | |
836 | } | |
837 | ||
838 | /* Init RXF-Pages */ | |
839 | offset += (sizeof(struct atl1e_tpd_desc) * tx_ring->count); | |
840 | offset = roundup(offset, 32); | |
841 | ||
842 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
843 | for (j = 0; j < AT_PAGE_NUM_PER_QUEUE; j++) { | |
844 | rx_page_desc[i].rx_page[j].dma = | |
845 | adapter->ring_dma + offset; | |
846 | rx_page_desc[i].rx_page[j].addr = | |
847 | adapter->ring_vir_addr + offset; | |
848 | offset += rx_ring->real_page_size; | |
849 | } | |
850 | } | |
851 | ||
852 | /* Init CMB dma address */ | |
853 | tx_ring->cmb_dma = adapter->ring_dma + offset; | |
43d620c8 | 854 | tx_ring->cmb = adapter->ring_vir_addr + offset; |
a6a53252 JY |
855 | offset += sizeof(u32); |
856 | ||
857 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
858 | for (j = 0; j < AT_PAGE_NUM_PER_QUEUE; j++) { | |
859 | rx_page_desc[i].rx_page[j].write_offset_dma = | |
860 | adapter->ring_dma + offset; | |
861 | rx_page_desc[i].rx_page[j].write_offset_addr = | |
862 | adapter->ring_vir_addr + offset; | |
863 | offset += sizeof(u32); | |
864 | } | |
865 | } | |
866 | ||
867 | if (unlikely(offset > adapter->ring_size)) { | |
ba211e3e JP |
868 | netdev_err(adapter->netdev, "offset(%d) > ring size(%d) !!\n", |
869 | offset, adapter->ring_size); | |
a6a53252 JY |
870 | err = -1; |
871 | goto failed; | |
872 | } | |
873 | ||
874 | return 0; | |
875 | failed: | |
876 | if (adapter->ring_vir_addr != NULL) { | |
877 | pci_free_consistent(pdev, adapter->ring_size, | |
878 | adapter->ring_vir_addr, adapter->ring_dma); | |
879 | adapter->ring_vir_addr = NULL; | |
880 | } | |
881 | return err; | |
882 | } | |
883 | ||
64699336 | 884 | static inline void atl1e_configure_des_ring(struct atl1e_adapter *adapter) |
a6a53252 JY |
885 | { |
886 | ||
64699336 JP |
887 | struct atl1e_hw *hw = &adapter->hw; |
888 | struct atl1e_rx_ring *rx_ring = &adapter->rx_ring; | |
889 | struct atl1e_tx_ring *tx_ring = &adapter->tx_ring; | |
a6a53252 JY |
890 | struct atl1e_rx_page_desc *rx_page_desc = NULL; |
891 | int i, j; | |
892 | ||
893 | AT_WRITE_REG(hw, REG_DESC_BASE_ADDR_HI, | |
894 | (u32)((adapter->ring_dma & AT_DMA_HI_ADDR_MASK) >> 32)); | |
895 | AT_WRITE_REG(hw, REG_TPD_BASE_ADDR_LO, | |
896 | (u32)((tx_ring->dma) & AT_DMA_LO_ADDR_MASK)); | |
897 | AT_WRITE_REG(hw, REG_TPD_RING_SIZE, (u16)(tx_ring->count)); | |
898 | AT_WRITE_REG(hw, REG_HOST_TX_CMB_LO, | |
899 | (u32)((tx_ring->cmb_dma) & AT_DMA_LO_ADDR_MASK)); | |
900 | ||
901 | rx_page_desc = rx_ring->rx_page_desc; | |
902 | /* RXF Page Physical address / Page Length */ | |
903 | for (i = 0; i < AT_MAX_RECEIVE_QUEUE; i++) { | |
904 | AT_WRITE_REG(hw, atl1e_rx_page_hi_addr_regs[i], | |
905 | (u32)((adapter->ring_dma & | |
906 | AT_DMA_HI_ADDR_MASK) >> 32)); | |
907 | for (j = 0; j < AT_PAGE_NUM_PER_QUEUE; j++) { | |
908 | u32 page_phy_addr; | |
909 | u32 offset_phy_addr; | |
910 | ||
911 | page_phy_addr = rx_page_desc[i].rx_page[j].dma; | |
912 | offset_phy_addr = | |
913 | rx_page_desc[i].rx_page[j].write_offset_dma; | |
914 | ||
915 | AT_WRITE_REG(hw, atl1e_rx_page_lo_addr_regs[i][j], | |
916 | page_phy_addr & AT_DMA_LO_ADDR_MASK); | |
917 | AT_WRITE_REG(hw, atl1e_rx_page_write_offset_regs[i][j], | |
918 | offset_phy_addr & AT_DMA_LO_ADDR_MASK); | |
919 | AT_WRITE_REGB(hw, atl1e_rx_page_vld_regs[i][j], 1); | |
920 | } | |
921 | } | |
922 | /* Page Length */ | |
923 | AT_WRITE_REG(hw, REG_HOST_RXFPAGE_SIZE, rx_ring->page_size); | |
924 | /* Load all of base address above */ | |
925 | AT_WRITE_REG(hw, REG_LOAD_PTR, 1); | |
a6a53252 JY |
926 | } |
927 | ||
928 | static inline void atl1e_configure_tx(struct atl1e_adapter *adapter) | |
929 | { | |
64699336 | 930 | struct atl1e_hw *hw = &adapter->hw; |
a6a53252 JY |
931 | u32 dev_ctrl_data = 0; |
932 | u32 max_pay_load = 0; | |
933 | u32 jumbo_thresh = 0; | |
934 | u32 extra_size = 0; /* Jumbo frame threshold in QWORD unit */ | |
935 | ||
936 | /* configure TXQ param */ | |
937 | if (hw->nic_type != athr_l2e_revB) { | |
938 | extra_size = ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN; | |
939 | if (hw->max_frame_size <= 1500) { | |
940 | jumbo_thresh = hw->max_frame_size + extra_size; | |
941 | } else if (hw->max_frame_size < 6*1024) { | |
942 | jumbo_thresh = | |
943 | (hw->max_frame_size + extra_size) * 2 / 3; | |
944 | } else { | |
945 | jumbo_thresh = (hw->max_frame_size + extra_size) / 2; | |
946 | } | |
947 | AT_WRITE_REG(hw, REG_TX_EARLY_TH, (jumbo_thresh + 7) >> 3); | |
948 | } | |
949 | ||
950 | dev_ctrl_data = AT_READ_REG(hw, REG_DEVICE_CTRL); | |
951 | ||
952 | max_pay_load = ((dev_ctrl_data >> DEVICE_CTRL_MAX_PAYLOAD_SHIFT)) & | |
953 | DEVICE_CTRL_MAX_PAYLOAD_MASK; | |
954 | ||
81b504b8 | 955 | hw->dmaw_block = min_t(u32, max_pay_load, hw->dmaw_block); |
a6a53252 JY |
956 | |
957 | max_pay_load = ((dev_ctrl_data >> DEVICE_CTRL_MAX_RREQ_SZ_SHIFT)) & | |
958 | DEVICE_CTRL_MAX_RREQ_SZ_MASK; | |
81b504b8 | 959 | hw->dmar_block = min_t(u32, max_pay_load, hw->dmar_block); |
a6a53252 JY |
960 | |
961 | if (hw->nic_type != athr_l2e_revB) | |
962 | AT_WRITE_REGW(hw, REG_TXQ_CTRL + 2, | |
963 | atl1e_pay_load_size[hw->dmar_block]); | |
964 | /* enable TXQ */ | |
965 | AT_WRITE_REGW(hw, REG_TXQ_CTRL, | |
966 | (((u16)hw->tpd_burst & TXQ_CTRL_NUM_TPD_BURST_MASK) | |
967 | << TXQ_CTRL_NUM_TPD_BURST_SHIFT) | |
968 | | TXQ_CTRL_ENH_MODE | TXQ_CTRL_EN); | |
a6a53252 JY |
969 | } |
970 | ||
971 | static inline void atl1e_configure_rx(struct atl1e_adapter *adapter) | |
972 | { | |
64699336 | 973 | struct atl1e_hw *hw = &adapter->hw; |
a6a53252 JY |
974 | u32 rxf_len = 0; |
975 | u32 rxf_low = 0; | |
976 | u32 rxf_high = 0; | |
977 | u32 rxf_thresh_data = 0; | |
978 | u32 rxq_ctrl_data = 0; | |
979 | ||
980 | if (hw->nic_type != athr_l2e_revB) { | |
981 | AT_WRITE_REGW(hw, REG_RXQ_JMBOSZ_RRDTIM, | |
982 | (u16)((hw->rx_jumbo_th & RXQ_JMBOSZ_TH_MASK) << | |
983 | RXQ_JMBOSZ_TH_SHIFT | | |
984 | (1 & RXQ_JMBO_LKAH_MASK) << | |
985 | RXQ_JMBO_LKAH_SHIFT)); | |
986 | ||
987 | rxf_len = AT_READ_REG(hw, REG_SRAM_RXF_LEN); | |
988 | rxf_high = rxf_len * 4 / 5; | |
989 | rxf_low = rxf_len / 5; | |
990 | rxf_thresh_data = ((rxf_high & RXQ_RXF_PAUSE_TH_HI_MASK) | |
991 | << RXQ_RXF_PAUSE_TH_HI_SHIFT) | | |
992 | ((rxf_low & RXQ_RXF_PAUSE_TH_LO_MASK) | |
993 | << RXQ_RXF_PAUSE_TH_LO_SHIFT); | |
994 | ||
995 | AT_WRITE_REG(hw, REG_RXQ_RXF_PAUSE_THRESH, rxf_thresh_data); | |
996 | } | |
997 | ||
998 | /* RRS */ | |
999 | AT_WRITE_REG(hw, REG_IDT_TABLE, hw->indirect_tab); | |
1000 | AT_WRITE_REG(hw, REG_BASE_CPU_NUMBER, hw->base_cpu); | |
1001 | ||
1002 | if (hw->rrs_type & atl1e_rrs_ipv4) | |
1003 | rxq_ctrl_data |= RXQ_CTRL_HASH_TYPE_IPV4; | |
1004 | ||
1005 | if (hw->rrs_type & atl1e_rrs_ipv4_tcp) | |
1006 | rxq_ctrl_data |= RXQ_CTRL_HASH_TYPE_IPV4_TCP; | |
1007 | ||
1008 | if (hw->rrs_type & atl1e_rrs_ipv6) | |
1009 | rxq_ctrl_data |= RXQ_CTRL_HASH_TYPE_IPV6; | |
1010 | ||
1011 | if (hw->rrs_type & atl1e_rrs_ipv6_tcp) | |
1012 | rxq_ctrl_data |= RXQ_CTRL_HASH_TYPE_IPV6_TCP; | |
1013 | ||
1014 | if (hw->rrs_type != atl1e_rrs_disable) | |
1015 | rxq_ctrl_data |= | |
1016 | (RXQ_CTRL_HASH_ENABLE | RXQ_CTRL_RSS_MODE_MQUESINT); | |
1017 | ||
1018 | rxq_ctrl_data |= RXQ_CTRL_IPV6_XSUM_VERIFY_EN | RXQ_CTRL_PBA_ALIGN_32 | | |
1019 | RXQ_CTRL_CUT_THRU_EN | RXQ_CTRL_EN; | |
1020 | ||
1021 | AT_WRITE_REG(hw, REG_RXQ_CTRL, rxq_ctrl_data); | |
a6a53252 JY |
1022 | } |
1023 | ||
1024 | static inline void atl1e_configure_dma(struct atl1e_adapter *adapter) | |
1025 | { | |
1026 | struct atl1e_hw *hw = &adapter->hw; | |
1027 | u32 dma_ctrl_data = 0; | |
1028 | ||
1029 | dma_ctrl_data = DMA_CTRL_RXCMB_EN; | |
1030 | dma_ctrl_data |= (((u32)hw->dmar_block) & DMA_CTRL_DMAR_BURST_LEN_MASK) | |
1031 | << DMA_CTRL_DMAR_BURST_LEN_SHIFT; | |
1032 | dma_ctrl_data |= (((u32)hw->dmaw_block) & DMA_CTRL_DMAW_BURST_LEN_MASK) | |
1033 | << DMA_CTRL_DMAW_BURST_LEN_SHIFT; | |
1034 | dma_ctrl_data |= DMA_CTRL_DMAR_REQ_PRI | DMA_CTRL_DMAR_OUT_ORDER; | |
1035 | dma_ctrl_data |= (((u32)hw->dmar_dly_cnt) & DMA_CTRL_DMAR_DLY_CNT_MASK) | |
1036 | << DMA_CTRL_DMAR_DLY_CNT_SHIFT; | |
1037 | dma_ctrl_data |= (((u32)hw->dmaw_dly_cnt) & DMA_CTRL_DMAW_DLY_CNT_MASK) | |
1038 | << DMA_CTRL_DMAW_DLY_CNT_SHIFT; | |
1039 | ||
1040 | AT_WRITE_REG(hw, REG_DMA_CTRL, dma_ctrl_data); | |
a6a53252 JY |
1041 | } |
1042 | ||
e6ca2328 | 1043 | static void atl1e_setup_mac_ctrl(struct atl1e_adapter *adapter) |
a6a53252 JY |
1044 | { |
1045 | u32 value; | |
1046 | struct atl1e_hw *hw = &adapter->hw; | |
1047 | struct net_device *netdev = adapter->netdev; | |
1048 | ||
1049 | /* Config MAC CTRL Register */ | |
1050 | value = MAC_CTRL_TX_EN | | |
1051 | MAC_CTRL_RX_EN ; | |
1052 | ||
1053 | if (FULL_DUPLEX == adapter->link_duplex) | |
1054 | value |= MAC_CTRL_DUPLX; | |
1055 | ||
1056 | value |= ((u32)((SPEED_1000 == adapter->link_speed) ? | |
1057 | MAC_CTRL_SPEED_1000 : MAC_CTRL_SPEED_10_100) << | |
1058 | MAC_CTRL_SPEED_SHIFT); | |
1059 | value |= (MAC_CTRL_TX_FLOW | MAC_CTRL_RX_FLOW); | |
1060 | ||
1061 | value |= (MAC_CTRL_ADD_CRC | MAC_CTRL_PAD); | |
1062 | value |= (((u32)adapter->hw.preamble_len & | |
1063 | MAC_CTRL_PRMLEN_MASK) << MAC_CTRL_PRMLEN_SHIFT); | |
1064 | ||
2707fffc | 1065 | __atl1e_vlan_mode(netdev->features, &value); |
a6a53252 JY |
1066 | |
1067 | value |= MAC_CTRL_BC_EN; | |
1068 | if (netdev->flags & IFF_PROMISC) | |
1069 | value |= MAC_CTRL_PROMIS_EN; | |
1070 | if (netdev->flags & IFF_ALLMULTI) | |
1071 | value |= MAC_CTRL_MC_ALL_EN; | |
40dc9ab2 AM |
1072 | if (netdev->features & NETIF_F_RXALL) |
1073 | value |= MAC_CTRL_DBG; | |
a6a53252 JY |
1074 | AT_WRITE_REG(hw, REG_MAC_CTRL, value); |
1075 | } | |
1076 | ||
49ce9c2c | 1077 | /** |
a6a53252 JY |
1078 | * atl1e_configure - Configure Transmit&Receive Unit after Reset |
1079 | * @adapter: board private structure | |
1080 | * | |
1081 | * Configure the Tx /Rx unit of the MAC after a reset. | |
1082 | */ | |
1083 | static int atl1e_configure(struct atl1e_adapter *adapter) | |
1084 | { | |
1085 | struct atl1e_hw *hw = &adapter->hw; | |
a6a53252 JY |
1086 | |
1087 | u32 intr_status_data = 0; | |
1088 | ||
1089 | /* clear interrupt status */ | |
1090 | AT_WRITE_REG(hw, REG_ISR, ~0); | |
1091 | ||
1092 | /* 1. set MAC Address */ | |
1093 | atl1e_hw_set_mac_addr(hw); | |
1094 | ||
1095 | /* 2. Init the Multicast HASH table done by set_muti */ | |
1096 | ||
1097 | /* 3. Clear any WOL status */ | |
1098 | AT_WRITE_REG(hw, REG_WOL_CTRL, 0); | |
1099 | ||
1100 | /* 4. Descripter Ring BaseMem/Length/Read ptr/Write ptr | |
1101 | * TPD Ring/SMB/RXF0 Page CMBs, they use the same | |
1102 | * High 32bits memory */ | |
1103 | atl1e_configure_des_ring(adapter); | |
1104 | ||
1105 | /* 5. set Interrupt Moderator Timer */ | |
1106 | AT_WRITE_REGW(hw, REG_IRQ_MODU_TIMER_INIT, hw->imt); | |
1107 | AT_WRITE_REGW(hw, REG_IRQ_MODU_TIMER2_INIT, hw->imt); | |
1108 | AT_WRITE_REG(hw, REG_MASTER_CTRL, MASTER_CTRL_LED_MODE | | |
1109 | MASTER_CTRL_ITIMER_EN | MASTER_CTRL_ITIMER2_EN); | |
1110 | ||
1111 | /* 6. rx/tx threshold to trig interrupt */ | |
1112 | AT_WRITE_REGW(hw, REG_TRIG_RRD_THRESH, hw->rrd_thresh); | |
1113 | AT_WRITE_REGW(hw, REG_TRIG_TPD_THRESH, hw->tpd_thresh); | |
1114 | AT_WRITE_REGW(hw, REG_TRIG_RXTIMER, hw->rx_count_down); | |
1115 | AT_WRITE_REGW(hw, REG_TRIG_TXTIMER, hw->tx_count_down); | |
1116 | ||
1117 | /* 7. set Interrupt Clear Timer */ | |
1118 | AT_WRITE_REGW(hw, REG_CMBDISDMA_TIMER, hw->ict); | |
1119 | ||
1120 | /* 8. set MTU */ | |
1121 | AT_WRITE_REG(hw, REG_MTU, hw->max_frame_size + ETH_HLEN + | |
1122 | VLAN_HLEN + ETH_FCS_LEN); | |
1123 | ||
1124 | /* 9. config TXQ early tx threshold */ | |
1125 | atl1e_configure_tx(adapter); | |
1126 | ||
1127 | /* 10. config RXQ */ | |
1128 | atl1e_configure_rx(adapter); | |
1129 | ||
1130 | /* 11. config DMA Engine */ | |
1131 | atl1e_configure_dma(adapter); | |
1132 | ||
1133 | /* 12. smb timer to trig interrupt */ | |
1134 | AT_WRITE_REG(hw, REG_SMB_STAT_TIMER, hw->smb_timer); | |
1135 | ||
1136 | intr_status_data = AT_READ_REG(hw, REG_ISR); | |
1137 | if (unlikely((intr_status_data & ISR_PHY_LINKDOWN) != 0)) { | |
ba211e3e JP |
1138 | netdev_err(adapter->netdev, |
1139 | "atl1e_configure failed, PCIE phy link down\n"); | |
a6a53252 JY |
1140 | return -1; |
1141 | } | |
1142 | ||
1143 | AT_WRITE_REG(hw, REG_ISR, 0x7fffffff); | |
1144 | return 0; | |
1145 | } | |
1146 | ||
49ce9c2c | 1147 | /** |
a6a53252 JY |
1148 | * atl1e_get_stats - Get System Network Statistics |
1149 | * @netdev: network interface device structure | |
1150 | * | |
1151 | * Returns the address of the device statistics structure. | |
1152 | * The statistics are actually updated from the timer callback. | |
1153 | */ | |
1154 | static struct net_device_stats *atl1e_get_stats(struct net_device *netdev) | |
1155 | { | |
1156 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
1157 | struct atl1e_hw_stats *hw_stats = &adapter->hw_stats; | |
d3f65f7c | 1158 | struct net_device_stats *net_stats = &netdev->stats; |
a6a53252 | 1159 | |
a6a53252 JY |
1160 | net_stats->rx_bytes = hw_stats->rx_byte_cnt; |
1161 | net_stats->tx_bytes = hw_stats->tx_byte_cnt; | |
1162 | net_stats->multicast = hw_stats->rx_mcast; | |
1163 | net_stats->collisions = hw_stats->tx_1_col + | |
fb3a42fc SD |
1164 | hw_stats->tx_2_col + |
1165 | hw_stats->tx_late_col + | |
1166 | hw_stats->tx_abort_col; | |
1167 | ||
1168 | net_stats->rx_errors = hw_stats->rx_frag + | |
1169 | hw_stats->rx_fcs_err + | |
1170 | hw_stats->rx_len_err + | |
1171 | hw_stats->rx_sz_ov + | |
1172 | hw_stats->rx_rrd_ov + | |
1173 | hw_stats->rx_align_err + | |
1174 | hw_stats->rx_rxf_ov; | |
a6a53252 | 1175 | |
a6a53252 JY |
1176 | net_stats->rx_fifo_errors = hw_stats->rx_rxf_ov; |
1177 | net_stats->rx_length_errors = hw_stats->rx_len_err; | |
1178 | net_stats->rx_crc_errors = hw_stats->rx_fcs_err; | |
1179 | net_stats->rx_frame_errors = hw_stats->rx_align_err; | |
fb3a42fc | 1180 | net_stats->rx_dropped = hw_stats->rx_rrd_ov; |
a6a53252 | 1181 | |
fb3a42fc SD |
1182 | net_stats->tx_errors = hw_stats->tx_late_col + |
1183 | hw_stats->tx_abort_col + | |
1184 | hw_stats->tx_underrun + | |
1185 | hw_stats->tx_trunc; | |
a6a53252 | 1186 | |
a6a53252 JY |
1187 | net_stats->tx_fifo_errors = hw_stats->tx_underrun; |
1188 | net_stats->tx_aborted_errors = hw_stats->tx_abort_col; | |
1189 | net_stats->tx_window_errors = hw_stats->tx_late_col; | |
1190 | ||
fb3a42fc SD |
1191 | net_stats->rx_packets = hw_stats->rx_ok + net_stats->rx_errors; |
1192 | net_stats->tx_packets = hw_stats->tx_ok + net_stats->tx_errors; | |
1193 | ||
d3f65f7c | 1194 | return net_stats; |
a6a53252 JY |
1195 | } |
1196 | ||
1197 | static void atl1e_update_hw_stats(struct atl1e_adapter *adapter) | |
1198 | { | |
1199 | u16 hw_reg_addr = 0; | |
1200 | unsigned long *stats_item = NULL; | |
1201 | ||
1202 | /* update rx status */ | |
1203 | hw_reg_addr = REG_MAC_RX_STATUS_BIN; | |
1204 | stats_item = &adapter->hw_stats.rx_ok; | |
1205 | while (hw_reg_addr <= REG_MAC_RX_STATUS_END) { | |
1206 | *stats_item += AT_READ_REG(&adapter->hw, hw_reg_addr); | |
1207 | stats_item++; | |
1208 | hw_reg_addr += 4; | |
1209 | } | |
1210 | /* update tx status */ | |
1211 | hw_reg_addr = REG_MAC_TX_STATUS_BIN; | |
1212 | stats_item = &adapter->hw_stats.tx_ok; | |
1213 | while (hw_reg_addr <= REG_MAC_TX_STATUS_END) { | |
1214 | *stats_item += AT_READ_REG(&adapter->hw, hw_reg_addr); | |
1215 | stats_item++; | |
1216 | hw_reg_addr += 4; | |
1217 | } | |
1218 | } | |
1219 | ||
1220 | static inline void atl1e_clear_phy_int(struct atl1e_adapter *adapter) | |
1221 | { | |
1222 | u16 phy_data; | |
1223 | ||
1224 | spin_lock(&adapter->mdio_lock); | |
1225 | atl1e_read_phy_reg(&adapter->hw, MII_INT_STATUS, &phy_data); | |
1226 | spin_unlock(&adapter->mdio_lock); | |
1227 | } | |
1228 | ||
1229 | static bool atl1e_clean_tx_irq(struct atl1e_adapter *adapter) | |
1230 | { | |
64699336 | 1231 | struct atl1e_tx_ring *tx_ring = &adapter->tx_ring; |
a6a53252 JY |
1232 | struct atl1e_tx_buffer *tx_buffer = NULL; |
1233 | u16 hw_next_to_clean = AT_READ_REGW(&adapter->hw, REG_TPD_CONS_IDX); | |
1234 | u16 next_to_clean = atomic_read(&tx_ring->next_to_clean); | |
1235 | ||
1236 | while (next_to_clean != hw_next_to_clean) { | |
1237 | tx_buffer = &tx_ring->tx_buffer[next_to_clean]; | |
1238 | if (tx_buffer->dma) { | |
03f18991 JY |
1239 | if (tx_buffer->flags & ATL1E_TX_PCIMAP_SINGLE) |
1240 | pci_unmap_single(adapter->pdev, tx_buffer->dma, | |
1241 | tx_buffer->length, PCI_DMA_TODEVICE); | |
1242 | else if (tx_buffer->flags & ATL1E_TX_PCIMAP_PAGE) | |
1243 | pci_unmap_page(adapter->pdev, tx_buffer->dma, | |
a6a53252 JY |
1244 | tx_buffer->length, PCI_DMA_TODEVICE); |
1245 | tx_buffer->dma = 0; | |
1246 | } | |
1247 | ||
1248 | if (tx_buffer->skb) { | |
d270f67d | 1249 | dev_consume_skb_irq(tx_buffer->skb); |
a6a53252 JY |
1250 | tx_buffer->skb = NULL; |
1251 | } | |
1252 | ||
1253 | if (++next_to_clean == tx_ring->count) | |
1254 | next_to_clean = 0; | |
1255 | } | |
1256 | ||
1257 | atomic_set(&tx_ring->next_to_clean, next_to_clean); | |
1258 | ||
1259 | if (netif_queue_stopped(adapter->netdev) && | |
1260 | netif_carrier_ok(adapter->netdev)) { | |
1261 | netif_wake_queue(adapter->netdev); | |
1262 | } | |
1263 | ||
1264 | return true; | |
1265 | } | |
1266 | ||
49ce9c2c | 1267 | /** |
a6a53252 JY |
1268 | * atl1e_intr - Interrupt Handler |
1269 | * @irq: interrupt number | |
1270 | * @data: pointer to a network interface device structure | |
a6a53252 JY |
1271 | */ |
1272 | static irqreturn_t atl1e_intr(int irq, void *data) | |
1273 | { | |
1274 | struct net_device *netdev = data; | |
1275 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
a6a53252 JY |
1276 | struct atl1e_hw *hw = &adapter->hw; |
1277 | int max_ints = AT_MAX_INT_WORK; | |
1278 | int handled = IRQ_NONE; | |
1279 | u32 status; | |
1280 | ||
1281 | do { | |
1282 | status = AT_READ_REG(hw, REG_ISR); | |
1283 | if ((status & IMR_NORMAL_MASK) == 0 || | |
1284 | (status & ISR_DIS_INT) != 0) { | |
1285 | if (max_ints != AT_MAX_INT_WORK) | |
1286 | handled = IRQ_HANDLED; | |
1287 | break; | |
1288 | } | |
1289 | /* link event */ | |
1290 | if (status & ISR_GPHY) | |
1291 | atl1e_clear_phy_int(adapter); | |
1292 | /* Ack ISR */ | |
1293 | AT_WRITE_REG(hw, REG_ISR, status | ISR_DIS_INT); | |
1294 | ||
1295 | handled = IRQ_HANDLED; | |
1296 | /* check if PCIE PHY Link down */ | |
1297 | if (status & ISR_PHY_LINKDOWN) { | |
ba211e3e JP |
1298 | netdev_err(adapter->netdev, |
1299 | "pcie phy linkdown %x\n", status); | |
a6a53252 JY |
1300 | if (netif_running(adapter->netdev)) { |
1301 | /* reset MAC */ | |
1302 | atl1e_irq_reset(adapter); | |
1303 | schedule_work(&adapter->reset_task); | |
1304 | break; | |
1305 | } | |
1306 | } | |
1307 | ||
1308 | /* check if DMA read/write error */ | |
1309 | if (status & (ISR_DMAR_TO_RST | ISR_DMAW_TO_RST)) { | |
ba211e3e JP |
1310 | netdev_err(adapter->netdev, |
1311 | "PCIE DMA RW error (status = 0x%x)\n", | |
1312 | status); | |
a6a53252 JY |
1313 | atl1e_irq_reset(adapter); |
1314 | schedule_work(&adapter->reset_task); | |
1315 | break; | |
1316 | } | |
1317 | ||
1318 | if (status & ISR_SMB) | |
1319 | atl1e_update_hw_stats(adapter); | |
1320 | ||
1321 | /* link event */ | |
1322 | if (status & (ISR_GPHY | ISR_MANUAL)) { | |
d3f65f7c | 1323 | netdev->stats.tx_carrier_errors++; |
a6a53252 JY |
1324 | atl1e_link_chg_event(adapter); |
1325 | break; | |
1326 | } | |
1327 | ||
1328 | /* transmit event */ | |
1329 | if (status & ISR_TX_EVENT) | |
1330 | atl1e_clean_tx_irq(adapter); | |
1331 | ||
1332 | if (status & ISR_RX_EVENT) { | |
1333 | /* | |
1334 | * disable rx interrupts, without | |
1335 | * the synchronize_irq bit | |
1336 | */ | |
1337 | AT_WRITE_REG(hw, REG_IMR, | |
1338 | IMR_NORMAL_MASK & ~ISR_RX_EVENT); | |
1339 | AT_WRITE_FLUSH(hw); | |
288379f0 | 1340 | if (likely(napi_schedule_prep( |
a6a53252 | 1341 | &adapter->napi))) |
288379f0 | 1342 | __napi_schedule(&adapter->napi); |
a6a53252 JY |
1343 | } |
1344 | } while (--max_ints > 0); | |
1345 | /* re-enable Interrupt*/ | |
1346 | AT_WRITE_REG(&adapter->hw, REG_ISR, 0); | |
1347 | ||
1348 | return handled; | |
1349 | } | |
1350 | ||
1351 | static inline void atl1e_rx_checksum(struct atl1e_adapter *adapter, | |
1352 | struct sk_buff *skb, struct atl1e_recv_ret_status *prrs) | |
1353 | { | |
1354 | u8 *packet = (u8 *)(prrs + 1); | |
1355 | struct iphdr *iph; | |
1356 | u16 head_len = ETH_HLEN; | |
1357 | u16 pkt_flags; | |
1358 | u16 err_flags; | |
1359 | ||
bc8acf2c | 1360 | skb_checksum_none_assert(skb); |
a6a53252 JY |
1361 | pkt_flags = prrs->pkt_flag; |
1362 | err_flags = prrs->err_flag; | |
1363 | if (((pkt_flags & RRS_IS_IPV4) || (pkt_flags & RRS_IS_IPV6)) && | |
1364 | ((pkt_flags & RRS_IS_TCP) || (pkt_flags & RRS_IS_UDP))) { | |
1365 | if (pkt_flags & RRS_IS_IPV4) { | |
1366 | if (pkt_flags & RRS_IS_802_3) | |
1367 | head_len += 8; | |
1368 | iph = (struct iphdr *) (packet + head_len); | |
1369 | if (iph->frag_off != 0 && !(pkt_flags & RRS_IS_IP_DF)) | |
1370 | goto hw_xsum; | |
1371 | } | |
1372 | if (!(err_flags & (RRS_ERR_IP_CSUM | RRS_ERR_L4_CSUM))) { | |
1373 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
1374 | return; | |
1375 | } | |
1376 | } | |
1377 | ||
1378 | hw_xsum : | |
1379 | return; | |
1380 | } | |
1381 | ||
1382 | static struct atl1e_rx_page *atl1e_get_rx_page(struct atl1e_adapter *adapter, | |
1383 | u8 que) | |
1384 | { | |
1385 | struct atl1e_rx_page_desc *rx_page_desc = | |
1386 | (struct atl1e_rx_page_desc *) adapter->rx_ring.rx_page_desc; | |
1387 | u8 rx_using = rx_page_desc[que].rx_using; | |
1388 | ||
64699336 | 1389 | return &(rx_page_desc[que].rx_page[rx_using]); |
a6a53252 JY |
1390 | } |
1391 | ||
1392 | static void atl1e_clean_rx_irq(struct atl1e_adapter *adapter, u8 que, | |
1393 | int *work_done, int work_to_do) | |
1394 | { | |
a6a53252 | 1395 | struct net_device *netdev = adapter->netdev; |
64699336 | 1396 | struct atl1e_rx_ring *rx_ring = &adapter->rx_ring; |
a6a53252 JY |
1397 | struct atl1e_rx_page_desc *rx_page_desc = |
1398 | (struct atl1e_rx_page_desc *) rx_ring->rx_page_desc; | |
1399 | struct sk_buff *skb = NULL; | |
1400 | struct atl1e_rx_page *rx_page = atl1e_get_rx_page(adapter, que); | |
1401 | u32 packet_size, write_offset; | |
1402 | struct atl1e_recv_ret_status *prrs; | |
1403 | ||
1404 | write_offset = *(rx_page->write_offset_addr); | |
1405 | if (likely(rx_page->read_offset < write_offset)) { | |
1406 | do { | |
1407 | if (*work_done >= work_to_do) | |
1408 | break; | |
1409 | (*work_done)++; | |
1410 | /* get new packet's rrs */ | |
1411 | prrs = (struct atl1e_recv_ret_status *) (rx_page->addr + | |
1412 | rx_page->read_offset); | |
1413 | /* check sequence number */ | |
1414 | if (prrs->seq_num != rx_page_desc[que].rx_nxseq) { | |
ba211e3e JP |
1415 | netdev_err(netdev, |
1416 | "rx sequence number error (rx=%d) (expect=%d)\n", | |
1417 | prrs->seq_num, | |
1418 | rx_page_desc[que].rx_nxseq); | |
a6a53252 JY |
1419 | rx_page_desc[que].rx_nxseq++; |
1420 | /* just for debug use */ | |
1421 | AT_WRITE_REG(&adapter->hw, REG_DEBUG_DATA0, | |
1422 | (((u32)prrs->seq_num) << 16) | | |
1423 | rx_page_desc[que].rx_nxseq); | |
1424 | goto fatal_err; | |
1425 | } | |
1426 | rx_page_desc[que].rx_nxseq++; | |
1427 | ||
1428 | /* error packet */ | |
40dc9ab2 AM |
1429 | if ((prrs->pkt_flag & RRS_IS_ERR_FRAME) && |
1430 | !(netdev->features & NETIF_F_RXALL)) { | |
a6a53252 JY |
1431 | if (prrs->err_flag & (RRS_ERR_BAD_CRC | |
1432 | RRS_ERR_DRIBBLE | RRS_ERR_CODE | | |
1433 | RRS_ERR_TRUNC)) { | |
1434 | /* hardware error, discard this packet*/ | |
ba211e3e JP |
1435 | netdev_err(netdev, |
1436 | "rx packet desc error %x\n", | |
1437 | *((u32 *)prrs + 1)); | |
a6a53252 JY |
1438 | goto skip_pkt; |
1439 | } | |
1440 | } | |
1441 | ||
1442 | packet_size = ((prrs->word1 >> RRS_PKT_SIZE_SHIFT) & | |
40dc9ab2 AM |
1443 | RRS_PKT_SIZE_MASK); |
1444 | if (likely(!(netdev->features & NETIF_F_RXFCS))) | |
1445 | packet_size -= 4; /* CRC */ | |
1446 | ||
89d71a66 | 1447 | skb = netdev_alloc_skb_ip_align(netdev, packet_size); |
720a43ef | 1448 | if (skb == NULL) |
a6a53252 | 1449 | goto skip_pkt; |
720a43ef | 1450 | |
a6a53252 JY |
1451 | memcpy(skb->data, (u8 *)(prrs + 1), packet_size); |
1452 | skb_put(skb, packet_size); | |
1453 | skb->protocol = eth_type_trans(skb, netdev); | |
1454 | atl1e_rx_checksum(adapter, skb, prrs); | |
1455 | ||
2707fffc | 1456 | if (prrs->pkt_flag & RRS_IS_VLAN_TAG) { |
a6a53252 JY |
1457 | u16 vlan_tag = (prrs->vtag >> 4) | |
1458 | ((prrs->vtag & 7) << 13) | | |
1459 | ((prrs->vtag & 8) << 9); | |
ba211e3e JP |
1460 | netdev_dbg(netdev, |
1461 | "RXD VLAN TAG<RRD>=0x%04x\n", | |
1462 | prrs->vtag); | |
86a9bad3 | 1463 | __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlan_tag); |
a6a53252 | 1464 | } |
c45f8e10 | 1465 | napi_gro_receive(&adapter->napi, skb); |
a6a53252 | 1466 | |
a6a53252 JY |
1467 | skip_pkt: |
1468 | /* skip current packet whether it's ok or not. */ | |
1469 | rx_page->read_offset += | |
1470 | (((u32)((prrs->word1 >> RRS_PKT_SIZE_SHIFT) & | |
1471 | RRS_PKT_SIZE_MASK) + | |
1472 | sizeof(struct atl1e_recv_ret_status) + 31) & | |
1473 | 0xFFFFFFE0); | |
1474 | ||
1475 | if (rx_page->read_offset >= rx_ring->page_size) { | |
1476 | /* mark this page clean */ | |
1477 | u16 reg_addr; | |
1478 | u8 rx_using; | |
1479 | ||
1480 | rx_page->read_offset = | |
1481 | *(rx_page->write_offset_addr) = 0; | |
1482 | rx_using = rx_page_desc[que].rx_using; | |
1483 | reg_addr = | |
1484 | atl1e_rx_page_vld_regs[que][rx_using]; | |
1485 | AT_WRITE_REGB(&adapter->hw, reg_addr, 1); | |
1486 | rx_page_desc[que].rx_using ^= 1; | |
1487 | rx_page = atl1e_get_rx_page(adapter, que); | |
1488 | } | |
1489 | write_offset = *(rx_page->write_offset_addr); | |
1490 | } while (rx_page->read_offset < write_offset); | |
1491 | } | |
1492 | ||
1493 | return; | |
1494 | ||
1495 | fatal_err: | |
1496 | if (!test_bit(__AT_DOWN, &adapter->flags)) | |
1497 | schedule_work(&adapter->reset_task); | |
1498 | } | |
1499 | ||
49ce9c2c | 1500 | /** |
a6a53252 | 1501 | * atl1e_clean - NAPI Rx polling callback |
a6a53252 JY |
1502 | */ |
1503 | static int atl1e_clean(struct napi_struct *napi, int budget) | |
1504 | { | |
1505 | struct atl1e_adapter *adapter = | |
1506 | container_of(napi, struct atl1e_adapter, napi); | |
a6a53252 JY |
1507 | u32 imr_data; |
1508 | int work_done = 0; | |
1509 | ||
1510 | /* Keep link state information with original netdev */ | |
1511 | if (!netif_carrier_ok(adapter->netdev)) | |
1512 | goto quit_polling; | |
1513 | ||
1514 | atl1e_clean_rx_irq(adapter, 0, &work_done, budget); | |
1515 | ||
1516 | /* If no Tx and not enough Rx work done, exit the polling mode */ | |
1517 | if (work_done < budget) { | |
1518 | quit_polling: | |
6ad20165 | 1519 | napi_complete_done(napi, work_done); |
a6a53252 JY |
1520 | imr_data = AT_READ_REG(&adapter->hw, REG_IMR); |
1521 | AT_WRITE_REG(&adapter->hw, REG_IMR, imr_data | ISR_RX_EVENT); | |
1522 | /* test debug */ | |
1523 | if (test_bit(__AT_DOWN, &adapter->flags)) { | |
1524 | atomic_dec(&adapter->irq_sem); | |
ba211e3e JP |
1525 | netdev_err(adapter->netdev, |
1526 | "atl1e_clean is called when AT_DOWN\n"); | |
a6a53252 JY |
1527 | } |
1528 | /* reenable RX intr */ | |
1529 | /*atl1e_irq_enable(adapter); */ | |
1530 | ||
1531 | } | |
1532 | return work_done; | |
1533 | } | |
1534 | ||
1535 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
1536 | ||
1537 | /* | |
1538 | * Polling 'interrupt' - used by things like netconsole to send skbs | |
1539 | * without having to re-enable interrupts. It's not called while | |
1540 | * the interrupt routine is executing. | |
1541 | */ | |
1542 | static void atl1e_netpoll(struct net_device *netdev) | |
1543 | { | |
1544 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
1545 | ||
1546 | disable_irq(adapter->pdev->irq); | |
1547 | atl1e_intr(adapter->pdev->irq, netdev); | |
1548 | enable_irq(adapter->pdev->irq); | |
1549 | } | |
1550 | #endif | |
1551 | ||
1552 | static inline u16 atl1e_tpd_avail(struct atl1e_adapter *adapter) | |
1553 | { | |
1554 | struct atl1e_tx_ring *tx_ring = &adapter->tx_ring; | |
1555 | u16 next_to_use = 0; | |
1556 | u16 next_to_clean = 0; | |
1557 | ||
1558 | next_to_clean = atomic_read(&tx_ring->next_to_clean); | |
1559 | next_to_use = tx_ring->next_to_use; | |
1560 | ||
1561 | return (u16)(next_to_clean > next_to_use) ? | |
1562 | (next_to_clean - next_to_use - 1) : | |
1563 | (tx_ring->count + next_to_clean - next_to_use - 1); | |
1564 | } | |
1565 | ||
1566 | /* | |
1567 | * get next usable tpd | |
1568 | * Note: should call atl1e_tdp_avail to make sure | |
1569 | * there is enough tpd to use | |
1570 | */ | |
1571 | static struct atl1e_tpd_desc *atl1e_get_tpd(struct atl1e_adapter *adapter) | |
1572 | { | |
1573 | struct atl1e_tx_ring *tx_ring = &adapter->tx_ring; | |
1574 | u16 next_to_use = 0; | |
1575 | ||
1576 | next_to_use = tx_ring->next_to_use; | |
1577 | if (++tx_ring->next_to_use == tx_ring->count) | |
1578 | tx_ring->next_to_use = 0; | |
1579 | ||
1580 | memset(&tx_ring->desc[next_to_use], 0, sizeof(struct atl1e_tpd_desc)); | |
64699336 | 1581 | return &tx_ring->desc[next_to_use]; |
a6a53252 JY |
1582 | } |
1583 | ||
1584 | static struct atl1e_tx_buffer * | |
1585 | atl1e_get_tx_buffer(struct atl1e_adapter *adapter, struct atl1e_tpd_desc *tpd) | |
1586 | { | |
1587 | struct atl1e_tx_ring *tx_ring = &adapter->tx_ring; | |
1588 | ||
1589 | return &tx_ring->tx_buffer[tpd - tx_ring->desc]; | |
1590 | } | |
1591 | ||
1592 | /* Calculate the transmit packet descript needed*/ | |
1593 | static u16 atl1e_cal_tdp_req(const struct sk_buff *skb) | |
1594 | { | |
1595 | int i = 0; | |
1596 | u16 tpd_req = 1; | |
1597 | u16 fg_size = 0; | |
1598 | u16 proto_hdr_len = 0; | |
1599 | ||
1600 | for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { | |
9e903e08 | 1601 | fg_size = skb_frag_size(&skb_shinfo(skb)->frags[i]); |
a6a53252 JY |
1602 | tpd_req += ((fg_size + MAX_TX_BUF_LEN - 1) >> MAX_TX_BUF_SHIFT); |
1603 | } | |
1604 | ||
1605 | if (skb_is_gso(skb)) { | |
17d0cdfa | 1606 | if (skb->protocol == htons(ETH_P_IP) || |
a6a53252 JY |
1607 | (skb_shinfo(skb)->gso_type == SKB_GSO_TCPV6)) { |
1608 | proto_hdr_len = skb_transport_offset(skb) + | |
1609 | tcp_hdrlen(skb); | |
1610 | if (proto_hdr_len < skb_headlen(skb)) { | |
1611 | tpd_req += ((skb_headlen(skb) - proto_hdr_len + | |
1612 | MAX_TX_BUF_LEN - 1) >> | |
1613 | MAX_TX_BUF_SHIFT); | |
1614 | } | |
1615 | } | |
1616 | ||
1617 | } | |
1618 | return tpd_req; | |
1619 | } | |
1620 | ||
1621 | static int atl1e_tso_csum(struct atl1e_adapter *adapter, | |
1622 | struct sk_buff *skb, struct atl1e_tpd_desc *tpd) | |
1623 | { | |
d8e4435e | 1624 | unsigned short offload_type; |
a6a53252 JY |
1625 | u8 hdr_len; |
1626 | u32 real_len; | |
a6a53252 JY |
1627 | |
1628 | if (skb_is_gso(skb)) { | |
d8e4435e | 1629 | int err; |
1630 | ||
1631 | err = skb_cow_head(skb, 0); | |
1632 | if (err < 0) | |
1633 | return err; | |
1634 | ||
a6a53252 JY |
1635 | offload_type = skb_shinfo(skb)->gso_type; |
1636 | ||
1637 | if (offload_type & SKB_GSO_TCPV4) { | |
1638 | real_len = (((unsigned char *)ip_hdr(skb) - skb->data) | |
1639 | + ntohs(ip_hdr(skb)->tot_len)); | |
1640 | ||
1641 | if (real_len < skb->len) | |
1642 | pskb_trim(skb, real_len); | |
1643 | ||
1644 | hdr_len = (skb_transport_offset(skb) + tcp_hdrlen(skb)); | |
1645 | if (unlikely(skb->len == hdr_len)) { | |
1646 | /* only xsum need */ | |
ba211e3e JP |
1647 | netdev_warn(adapter->netdev, |
1648 | "IPV4 tso with zero data??\n"); | |
a6a53252 JY |
1649 | goto check_sum; |
1650 | } else { | |
1651 | ip_hdr(skb)->check = 0; | |
1652 | ip_hdr(skb)->tot_len = 0; | |
1653 | tcp_hdr(skb)->check = ~csum_tcpudp_magic( | |
1654 | ip_hdr(skb)->saddr, | |
1655 | ip_hdr(skb)->daddr, | |
1656 | 0, IPPROTO_TCP, 0); | |
1657 | tpd->word3 |= (ip_hdr(skb)->ihl & | |
1658 | TDP_V4_IPHL_MASK) << | |
1659 | TPD_V4_IPHL_SHIFT; | |
1660 | tpd->word3 |= ((tcp_hdrlen(skb) >> 2) & | |
1661 | TPD_TCPHDRLEN_MASK) << | |
1662 | TPD_TCPHDRLEN_SHIFT; | |
1663 | tpd->word3 |= ((skb_shinfo(skb)->gso_size) & | |
1664 | TPD_MSS_MASK) << TPD_MSS_SHIFT; | |
1665 | tpd->word3 |= 1 << TPD_SEGMENT_EN_SHIFT; | |
1666 | } | |
1667 | return 0; | |
1668 | } | |
a6a53252 JY |
1669 | } |
1670 | ||
1671 | check_sum: | |
1672 | if (likely(skb->ip_summed == CHECKSUM_PARTIAL)) { | |
1673 | u8 css, cso; | |
1674 | ||
0d0b1672 | 1675 | cso = skb_checksum_start_offset(skb); |
a6a53252 | 1676 | if (unlikely(cso & 0x1)) { |
ba211e3e JP |
1677 | netdev_err(adapter->netdev, |
1678 | "payload offset should not ant event number\n"); | |
a6a53252 JY |
1679 | return -1; |
1680 | } else { | |
1681 | css = cso + skb->csum_offset; | |
1682 | tpd->word3 |= (cso & TPD_PLOADOFFSET_MASK) << | |
1683 | TPD_PLOADOFFSET_SHIFT; | |
1684 | tpd->word3 |= (css & TPD_CCSUMOFFSET_MASK) << | |
1685 | TPD_CCSUMOFFSET_SHIFT; | |
1686 | tpd->word3 |= 1 << TPD_CC_SEGMENT_EN_SHIFT; | |
1687 | } | |
1688 | } | |
1689 | ||
1690 | return 0; | |
1691 | } | |
1692 | ||
352900b5 NH |
1693 | static int atl1e_tx_map(struct atl1e_adapter *adapter, |
1694 | struct sk_buff *skb, struct atl1e_tpd_desc *tpd) | |
a6a53252 JY |
1695 | { |
1696 | struct atl1e_tpd_desc *use_tpd = NULL; | |
1697 | struct atl1e_tx_buffer *tx_buffer = NULL; | |
e743d313 | 1698 | u16 buf_len = skb_headlen(skb); |
a6a53252 JY |
1699 | u16 map_len = 0; |
1700 | u16 mapped_len = 0; | |
1701 | u16 hdr_len = 0; | |
1702 | u16 nr_frags; | |
1703 | u16 f; | |
1704 | int segment; | |
352900b5 | 1705 | int ring_start = adapter->tx_ring.next_to_use; |
584ec435 | 1706 | int ring_end; |
a6a53252 JY |
1707 | |
1708 | nr_frags = skb_shinfo(skb)->nr_frags; | |
1709 | segment = (tpd->word3 >> TPD_SEGMENT_EN_SHIFT) & TPD_SEGMENT_EN_MASK; | |
1710 | if (segment) { | |
1711 | /* TSO */ | |
1712 | map_len = hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); | |
1713 | use_tpd = tpd; | |
1714 | ||
1715 | tx_buffer = atl1e_get_tx_buffer(adapter, use_tpd); | |
1716 | tx_buffer->length = map_len; | |
1717 | tx_buffer->dma = pci_map_single(adapter->pdev, | |
1718 | skb->data, hdr_len, PCI_DMA_TODEVICE); | |
352900b5 NH |
1719 | if (dma_mapping_error(&adapter->pdev->dev, tx_buffer->dma)) |
1720 | return -ENOSPC; | |
1721 | ||
03f18991 | 1722 | ATL1E_SET_PCIMAP_TYPE(tx_buffer, ATL1E_TX_PCIMAP_SINGLE); |
a6a53252 JY |
1723 | mapped_len += map_len; |
1724 | use_tpd->buffer_addr = cpu_to_le64(tx_buffer->dma); | |
1725 | use_tpd->word2 = (use_tpd->word2 & (~TPD_BUFLEN_MASK)) | | |
1726 | ((cpu_to_le32(tx_buffer->length) & | |
1727 | TPD_BUFLEN_MASK) << TPD_BUFLEN_SHIFT); | |
1728 | } | |
1729 | ||
1730 | while (mapped_len < buf_len) { | |
1731 | /* mapped_len == 0, means we should use the first tpd, | |
1732 | which is given by caller */ | |
1733 | if (mapped_len == 0) { | |
1734 | use_tpd = tpd; | |
1735 | } else { | |
1736 | use_tpd = atl1e_get_tpd(adapter); | |
1737 | memcpy(use_tpd, tpd, sizeof(struct atl1e_tpd_desc)); | |
1738 | } | |
1739 | tx_buffer = atl1e_get_tx_buffer(adapter, use_tpd); | |
1740 | tx_buffer->skb = NULL; | |
1741 | ||
1742 | tx_buffer->length = map_len = | |
1743 | ((buf_len - mapped_len) >= MAX_TX_BUF_LEN) ? | |
1744 | MAX_TX_BUF_LEN : (buf_len - mapped_len); | |
1745 | tx_buffer->dma = | |
1746 | pci_map_single(adapter->pdev, skb->data + mapped_len, | |
1747 | map_len, PCI_DMA_TODEVICE); | |
352900b5 NH |
1748 | |
1749 | if (dma_mapping_error(&adapter->pdev->dev, tx_buffer->dma)) { | |
584ec435 NH |
1750 | /* We need to unwind the mappings we've done */ |
1751 | ring_end = adapter->tx_ring.next_to_use; | |
1752 | adapter->tx_ring.next_to_use = ring_start; | |
1753 | while (adapter->tx_ring.next_to_use != ring_end) { | |
1754 | tpd = atl1e_get_tpd(adapter); | |
1755 | tx_buffer = atl1e_get_tx_buffer(adapter, tpd); | |
1756 | pci_unmap_single(adapter->pdev, tx_buffer->dma, | |
1757 | tx_buffer->length, PCI_DMA_TODEVICE); | |
1758 | } | |
352900b5 NH |
1759 | /* Reset the tx rings next pointer */ |
1760 | adapter->tx_ring.next_to_use = ring_start; | |
1761 | return -ENOSPC; | |
1762 | } | |
1763 | ||
03f18991 | 1764 | ATL1E_SET_PCIMAP_TYPE(tx_buffer, ATL1E_TX_PCIMAP_SINGLE); |
a6a53252 JY |
1765 | mapped_len += map_len; |
1766 | use_tpd->buffer_addr = cpu_to_le64(tx_buffer->dma); | |
1767 | use_tpd->word2 = (use_tpd->word2 & (~TPD_BUFLEN_MASK)) | | |
1768 | ((cpu_to_le32(tx_buffer->length) & | |
1769 | TPD_BUFLEN_MASK) << TPD_BUFLEN_SHIFT); | |
1770 | } | |
1771 | ||
1772 | for (f = 0; f < nr_frags; f++) { | |
d7840976 | 1773 | const skb_frag_t *frag = &skb_shinfo(skb)->frags[f]; |
a6a53252 JY |
1774 | u16 i; |
1775 | u16 seg_num; | |
1776 | ||
9e903e08 | 1777 | buf_len = skb_frag_size(frag); |
a6a53252 JY |
1778 | |
1779 | seg_num = (buf_len + MAX_TX_BUF_LEN - 1) / MAX_TX_BUF_LEN; | |
1780 | for (i = 0; i < seg_num; i++) { | |
1781 | use_tpd = atl1e_get_tpd(adapter); | |
1782 | memcpy(use_tpd, tpd, sizeof(struct atl1e_tpd_desc)); | |
1783 | ||
1784 | tx_buffer = atl1e_get_tx_buffer(adapter, use_tpd); | |
0ee904c3 | 1785 | BUG_ON(tx_buffer->skb); |
a6a53252 JY |
1786 | |
1787 | tx_buffer->skb = NULL; | |
1788 | tx_buffer->length = | |
1789 | (buf_len > MAX_TX_BUF_LEN) ? | |
1790 | MAX_TX_BUF_LEN : buf_len; | |
1791 | buf_len -= tx_buffer->length; | |
1792 | ||
6adaaac7 IC |
1793 | tx_buffer->dma = skb_frag_dma_map(&adapter->pdev->dev, |
1794 | frag, | |
1795 | (i * MAX_TX_BUF_LEN), | |
1796 | tx_buffer->length, | |
5d6bcdfe | 1797 | DMA_TO_DEVICE); |
352900b5 NH |
1798 | |
1799 | if (dma_mapping_error(&adapter->pdev->dev, tx_buffer->dma)) { | |
584ec435 NH |
1800 | /* We need to unwind the mappings we've done */ |
1801 | ring_end = adapter->tx_ring.next_to_use; | |
1802 | adapter->tx_ring.next_to_use = ring_start; | |
1803 | while (adapter->tx_ring.next_to_use != ring_end) { | |
1804 | tpd = atl1e_get_tpd(adapter); | |
1805 | tx_buffer = atl1e_get_tx_buffer(adapter, tpd); | |
1806 | dma_unmap_page(&adapter->pdev->dev, tx_buffer->dma, | |
1807 | tx_buffer->length, DMA_TO_DEVICE); | |
1808 | } | |
1809 | ||
352900b5 NH |
1810 | /* Reset the ring next to use pointer */ |
1811 | adapter->tx_ring.next_to_use = ring_start; | |
1812 | return -ENOSPC; | |
1813 | } | |
1814 | ||
03f18991 | 1815 | ATL1E_SET_PCIMAP_TYPE(tx_buffer, ATL1E_TX_PCIMAP_PAGE); |
a6a53252 JY |
1816 | use_tpd->buffer_addr = cpu_to_le64(tx_buffer->dma); |
1817 | use_tpd->word2 = (use_tpd->word2 & (~TPD_BUFLEN_MASK)) | | |
1818 | ((cpu_to_le32(tx_buffer->length) & | |
1819 | TPD_BUFLEN_MASK) << TPD_BUFLEN_SHIFT); | |
1820 | } | |
1821 | } | |
1822 | ||
1823 | if ((tpd->word3 >> TPD_SEGMENT_EN_SHIFT) & TPD_SEGMENT_EN_MASK) | |
1824 | /* note this one is a tcp header */ | |
1825 | tpd->word3 |= 1 << TPD_HDRFLAG_SHIFT; | |
1826 | /* The last tpd */ | |
1827 | ||
1828 | use_tpd->word3 |= 1 << TPD_EOP_SHIFT; | |
1829 | /* The last buffer info contain the skb address, | |
1830 | so it will be free after unmap */ | |
1831 | tx_buffer->skb = skb; | |
352900b5 | 1832 | return 0; |
a6a53252 JY |
1833 | } |
1834 | ||
1835 | static void atl1e_tx_queue(struct atl1e_adapter *adapter, u16 count, | |
1836 | struct atl1e_tpd_desc *tpd) | |
1837 | { | |
1838 | struct atl1e_tx_ring *tx_ring = &adapter->tx_ring; | |
1839 | /* Force memory writes to complete before letting h/w | |
1840 | * know there are new descriptors to fetch. (Only | |
1841 | * applicable for weak-ordered memory model archs, | |
1842 | * such as IA-64). */ | |
1843 | wmb(); | |
1844 | AT_WRITE_REG(&adapter->hw, REG_MB_TPD_PROD_IDX, tx_ring->next_to_use); | |
1845 | } | |
1846 | ||
61357325 SH |
1847 | static netdev_tx_t atl1e_xmit_frame(struct sk_buff *skb, |
1848 | struct net_device *netdev) | |
a6a53252 JY |
1849 | { |
1850 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
a6a53252 JY |
1851 | u16 tpd_req = 1; |
1852 | struct atl1e_tpd_desc *tpd; | |
1853 | ||
1854 | if (test_bit(__AT_DOWN, &adapter->flags)) { | |
1855 | dev_kfree_skb_any(skb); | |
1856 | return NETDEV_TX_OK; | |
1857 | } | |
1858 | ||
1859 | if (unlikely(skb->len <= 0)) { | |
1860 | dev_kfree_skb_any(skb); | |
1861 | return NETDEV_TX_OK; | |
1862 | } | |
1863 | tpd_req = atl1e_cal_tdp_req(skb); | |
a6a53252 JY |
1864 | |
1865 | if (atl1e_tpd_avail(adapter) < tpd_req) { | |
1866 | /* no enough descriptor, just stop queue */ | |
1867 | netif_stop_queue(netdev); | |
a6a53252 JY |
1868 | return NETDEV_TX_BUSY; |
1869 | } | |
1870 | ||
1871 | tpd = atl1e_get_tpd(adapter); | |
1872 | ||
df8a39de JP |
1873 | if (skb_vlan_tag_present(skb)) { |
1874 | u16 vlan_tag = skb_vlan_tag_get(skb); | |
a6a53252 JY |
1875 | u16 atl1e_vlan_tag; |
1876 | ||
1877 | tpd->word3 |= 1 << TPD_INS_VL_TAG_SHIFT; | |
1878 | AT_VLAN_TAG_TO_TPD_TAG(vlan_tag, atl1e_vlan_tag); | |
1879 | tpd->word2 |= (atl1e_vlan_tag & TPD_VLANTAG_MASK) << | |
1880 | TPD_VLAN_SHIFT; | |
1881 | } | |
1882 | ||
17d0cdfa | 1883 | if (skb->protocol == htons(ETH_P_8021Q)) |
a6a53252 JY |
1884 | tpd->word3 |= 1 << TPD_VL_TAGGED_SHIFT; |
1885 | ||
1886 | if (skb_network_offset(skb) != ETH_HLEN) | |
1887 | tpd->word3 |= 1 << TPD_ETHTYPE_SHIFT; /* 802.3 frame */ | |
1888 | ||
1889 | /* do TSO and check sum */ | |
1890 | if (atl1e_tso_csum(adapter, skb, tpd) != 0) { | |
a6a53252 JY |
1891 | dev_kfree_skb_any(skb); |
1892 | return NETDEV_TX_OK; | |
1893 | } | |
1894 | ||
584ec435 NH |
1895 | if (atl1e_tx_map(adapter, skb, tpd)) { |
1896 | dev_kfree_skb_any(skb); | |
352900b5 | 1897 | goto out; |
584ec435 | 1898 | } |
352900b5 | 1899 | |
a6a53252 | 1900 | atl1e_tx_queue(adapter, tpd_req, tpd); |
352900b5 | 1901 | out: |
a6a53252 JY |
1902 | return NETDEV_TX_OK; |
1903 | } | |
1904 | ||
1905 | static void atl1e_free_irq(struct atl1e_adapter *adapter) | |
1906 | { | |
1907 | struct net_device *netdev = adapter->netdev; | |
1908 | ||
1909 | free_irq(adapter->pdev->irq, netdev); | |
a6a53252 JY |
1910 | } |
1911 | ||
1912 | static int atl1e_request_irq(struct atl1e_adapter *adapter) | |
1913 | { | |
1914 | struct pci_dev *pdev = adapter->pdev; | |
1915 | struct net_device *netdev = adapter->netdev; | |
a6a53252 JY |
1916 | int err = 0; |
1917 | ||
188ab1b1 HFS |
1918 | err = request_irq(pdev->irq, atl1e_intr, IRQF_SHARED, netdev->name, |
1919 | netdev); | |
a6a53252 | 1920 | if (err) { |
ba211e3e JP |
1921 | netdev_dbg(adapter->netdev, |
1922 | "Unable to allocate interrupt Error: %d\n", err); | |
a6a53252 JY |
1923 | return err; |
1924 | } | |
b5efab99 | 1925 | netdev_dbg(netdev, "atl1e_request_irq OK\n"); |
a6a53252 JY |
1926 | return err; |
1927 | } | |
1928 | ||
1929 | int atl1e_up(struct atl1e_adapter *adapter) | |
1930 | { | |
1931 | struct net_device *netdev = adapter->netdev; | |
1932 | int err = 0; | |
1933 | u32 val; | |
1934 | ||
1935 | /* hardware has been reset, we need to reload some things */ | |
1936 | err = atl1e_init_hw(&adapter->hw); | |
1937 | if (err) { | |
1938 | err = -EIO; | |
1939 | return err; | |
1940 | } | |
1941 | atl1e_init_ring_ptrs(adapter); | |
1942 | atl1e_set_multi(netdev); | |
1943 | atl1e_restore_vlan(adapter); | |
1944 | ||
1945 | if (atl1e_configure(adapter)) { | |
1946 | err = -EIO; | |
1947 | goto err_up; | |
1948 | } | |
1949 | ||
1950 | clear_bit(__AT_DOWN, &adapter->flags); | |
1951 | napi_enable(&adapter->napi); | |
1952 | atl1e_irq_enable(adapter); | |
1953 | val = AT_READ_REG(&adapter->hw, REG_MASTER_CTRL); | |
1954 | AT_WRITE_REG(&adapter->hw, REG_MASTER_CTRL, | |
1955 | val | MASTER_CTRL_MANUAL_INT); | |
1956 | ||
1957 | err_up: | |
1958 | return err; | |
1959 | } | |
1960 | ||
1961 | void atl1e_down(struct atl1e_adapter *adapter) | |
1962 | { | |
1963 | struct net_device *netdev = adapter->netdev; | |
1964 | ||
1965 | /* signal that we're down so the interrupt handler does not | |
1966 | * reschedule our watchdog timer */ | |
1967 | set_bit(__AT_DOWN, &adapter->flags); | |
1968 | ||
a6a53252 | 1969 | netif_stop_queue(netdev); |
a6a53252 JY |
1970 | |
1971 | /* reset MAC to disable all RX/TX */ | |
1972 | atl1e_reset_hw(&adapter->hw); | |
1973 | msleep(1); | |
1974 | ||
1975 | napi_disable(&adapter->napi); | |
1976 | atl1e_del_timer(adapter); | |
1977 | atl1e_irq_disable(adapter); | |
1978 | ||
1979 | netif_carrier_off(netdev); | |
1980 | adapter->link_speed = SPEED_0; | |
1981 | adapter->link_duplex = -1; | |
1982 | atl1e_clean_tx_ring(adapter); | |
1983 | atl1e_clean_rx_ring(adapter); | |
1984 | } | |
1985 | ||
49ce9c2c | 1986 | /** |
a6a53252 JY |
1987 | * atl1e_open - Called when a network interface is made active |
1988 | * @netdev: network interface device structure | |
1989 | * | |
1990 | * Returns 0 on success, negative value on failure | |
1991 | * | |
1992 | * The open entry point is called when a network interface is made | |
1993 | * active by the system (IFF_UP). At this point all resources needed | |
1994 | * for transmit and receive operations are allocated, the interrupt | |
1995 | * handler is registered with the OS, the watchdog timer is started, | |
1996 | * and the stack is notified that the interface is ready. | |
1997 | */ | |
1998 | static int atl1e_open(struct net_device *netdev) | |
1999 | { | |
2000 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
2001 | int err; | |
2002 | ||
2003 | /* disallow open during test */ | |
2004 | if (test_bit(__AT_TESTING, &adapter->flags)) | |
2005 | return -EBUSY; | |
2006 | ||
2007 | /* allocate rx/tx dma buffer & descriptors */ | |
2008 | atl1e_init_ring_resources(adapter); | |
2009 | err = atl1e_setup_ring_resources(adapter); | |
2010 | if (unlikely(err)) | |
2011 | return err; | |
2012 | ||
2013 | err = atl1e_request_irq(adapter); | |
2014 | if (unlikely(err)) | |
2015 | goto err_req_irq; | |
2016 | ||
2017 | err = atl1e_up(adapter); | |
2018 | if (unlikely(err)) | |
2019 | goto err_up; | |
2020 | ||
2021 | return 0; | |
2022 | ||
2023 | err_up: | |
2024 | atl1e_free_irq(adapter); | |
2025 | err_req_irq: | |
2026 | atl1e_free_ring_resources(adapter); | |
2027 | atl1e_reset_hw(&adapter->hw); | |
2028 | ||
2029 | return err; | |
2030 | } | |
2031 | ||
49ce9c2c | 2032 | /** |
a6a53252 JY |
2033 | * atl1e_close - Disables a network interface |
2034 | * @netdev: network interface device structure | |
2035 | * | |
2036 | * Returns 0, this is not allowed to fail | |
2037 | * | |
2038 | * The close entry point is called when an interface is de-activated | |
2039 | * by the OS. The hardware is still under the drivers control, but | |
2040 | * needs to be disabled. A global MAC reset is issued to stop the | |
2041 | * hardware, and all transmit and receive resources are freed. | |
2042 | */ | |
2043 | static int atl1e_close(struct net_device *netdev) | |
2044 | { | |
2045 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
2046 | ||
2047 | WARN_ON(test_bit(__AT_RESETTING, &adapter->flags)); | |
2048 | atl1e_down(adapter); | |
2049 | atl1e_free_irq(adapter); | |
2050 | atl1e_free_ring_resources(adapter); | |
2051 | ||
2052 | return 0; | |
2053 | } | |
2054 | ||
a6a53252 JY |
2055 | static int atl1e_suspend(struct pci_dev *pdev, pm_message_t state) |
2056 | { | |
2057 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2058 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
2059 | struct atl1e_hw *hw = &adapter->hw; | |
2060 | u32 ctrl = 0; | |
2061 | u32 mac_ctrl_data = 0; | |
2062 | u32 wol_ctrl_data = 0; | |
2063 | u16 mii_advertise_data = 0; | |
2064 | u16 mii_bmsr_data = 0; | |
2065 | u16 mii_intr_status_data = 0; | |
2066 | u32 wufc = adapter->wol; | |
2067 | u32 i; | |
2068 | #ifdef CONFIG_PM | |
2069 | int retval = 0; | |
2070 | #endif | |
2071 | ||
2072 | if (netif_running(netdev)) { | |
2073 | WARN_ON(test_bit(__AT_RESETTING, &adapter->flags)); | |
2074 | atl1e_down(adapter); | |
2075 | } | |
2076 | netif_device_detach(netdev); | |
2077 | ||
2078 | #ifdef CONFIG_PM | |
2079 | retval = pci_save_state(pdev); | |
2080 | if (retval) | |
2081 | return retval; | |
2082 | #endif | |
2083 | ||
2084 | if (wufc) { | |
2085 | /* get link status */ | |
64699336 JP |
2086 | atl1e_read_phy_reg(hw, MII_BMSR, &mii_bmsr_data); |
2087 | atl1e_read_phy_reg(hw, MII_BMSR, &mii_bmsr_data); | |
a6a53252 | 2088 | |
ccd5c8ef | 2089 | mii_advertise_data = ADVERTISE_10HALF; |
a6a53252 | 2090 | |
ccd5c8ef | 2091 | if ((atl1e_write_phy_reg(hw, MII_CTRL1000, 0) != 0) || |
a6a53252 JY |
2092 | (atl1e_write_phy_reg(hw, |
2093 | MII_ADVERTISE, mii_advertise_data) != 0) || | |
2094 | (atl1e_phy_commit(hw)) != 0) { | |
ba211e3e | 2095 | netdev_dbg(adapter->netdev, "set phy register failed\n"); |
a6a53252 JY |
2096 | goto wol_dis; |
2097 | } | |
2098 | ||
2099 | hw->phy_configured = false; /* re-init PHY when resume */ | |
2100 | ||
2101 | /* turn on magic packet wol */ | |
2102 | if (wufc & AT_WUFC_MAG) | |
2103 | wol_ctrl_data |= WOL_MAGIC_EN | WOL_MAGIC_PME_EN; | |
2104 | ||
2105 | if (wufc & AT_WUFC_LNKC) { | |
2106 | /* if orignal link status is link, just wait for retrive link */ | |
2107 | if (mii_bmsr_data & BMSR_LSTATUS) { | |
2108 | for (i = 0; i < AT_SUSPEND_LINK_TIMEOUT; i++) { | |
2109 | msleep(100); | |
2110 | atl1e_read_phy_reg(hw, MII_BMSR, | |
64699336 | 2111 | &mii_bmsr_data); |
a6a53252 JY |
2112 | if (mii_bmsr_data & BMSR_LSTATUS) |
2113 | break; | |
2114 | } | |
2115 | ||
2116 | if ((mii_bmsr_data & BMSR_LSTATUS) == 0) | |
ba211e3e JP |
2117 | netdev_dbg(adapter->netdev, |
2118 | "Link may change when suspend\n"); | |
a6a53252 JY |
2119 | } |
2120 | wol_ctrl_data |= WOL_LINK_CHG_EN | WOL_LINK_CHG_PME_EN; | |
2121 | /* only link up can wake up */ | |
2122 | if (atl1e_write_phy_reg(hw, MII_INT_CTRL, 0x400) != 0) { | |
ba211e3e JP |
2123 | netdev_dbg(adapter->netdev, |
2124 | "read write phy register failed\n"); | |
a6a53252 JY |
2125 | goto wol_dis; |
2126 | } | |
2127 | } | |
2128 | /* clear phy interrupt */ | |
2129 | atl1e_read_phy_reg(hw, MII_INT_STATUS, &mii_intr_status_data); | |
2130 | /* Config MAC Ctrl register */ | |
2131 | mac_ctrl_data = MAC_CTRL_RX_EN; | |
2132 | /* set to 10/100M halt duplex */ | |
2133 | mac_ctrl_data |= MAC_CTRL_SPEED_10_100 << MAC_CTRL_SPEED_SHIFT; | |
2134 | mac_ctrl_data |= (((u32)adapter->hw.preamble_len & | |
2135 | MAC_CTRL_PRMLEN_MASK) << | |
2136 | MAC_CTRL_PRMLEN_SHIFT); | |
2137 | ||
2707fffc | 2138 | __atl1e_vlan_mode(netdev->features, &mac_ctrl_data); |
a6a53252 JY |
2139 | |
2140 | /* magic packet maybe Broadcast&multicast&Unicast frame */ | |
2141 | if (wufc & AT_WUFC_MAG) | |
2142 | mac_ctrl_data |= MAC_CTRL_BC_EN; | |
2143 | ||
ba211e3e JP |
2144 | netdev_dbg(adapter->netdev, "suspend MAC=0x%x\n", |
2145 | mac_ctrl_data); | |
a6a53252 JY |
2146 | |
2147 | AT_WRITE_REG(hw, REG_WOL_CTRL, wol_ctrl_data); | |
2148 | AT_WRITE_REG(hw, REG_MAC_CTRL, mac_ctrl_data); | |
2149 | /* pcie patch */ | |
2150 | ctrl = AT_READ_REG(hw, REG_PCIE_PHYMISC); | |
2151 | ctrl |= PCIE_PHYMISC_FORCE_RCV_DET; | |
2152 | AT_WRITE_REG(hw, REG_PCIE_PHYMISC, ctrl); | |
2153 | pci_enable_wake(pdev, pci_choose_state(pdev, state), 1); | |
2154 | goto suspend_exit; | |
2155 | } | |
2156 | wol_dis: | |
2157 | ||
2158 | /* WOL disabled */ | |
2159 | AT_WRITE_REG(hw, REG_WOL_CTRL, 0); | |
2160 | ||
2161 | /* pcie patch */ | |
2162 | ctrl = AT_READ_REG(hw, REG_PCIE_PHYMISC); | |
2163 | ctrl |= PCIE_PHYMISC_FORCE_RCV_DET; | |
2164 | AT_WRITE_REG(hw, REG_PCIE_PHYMISC, ctrl); | |
2165 | ||
2166 | atl1e_force_ps(hw); | |
2167 | hw->phy_configured = false; /* re-init PHY when resume */ | |
2168 | ||
2169 | pci_enable_wake(pdev, pci_choose_state(pdev, state), 0); | |
2170 | ||
2171 | suspend_exit: | |
2172 | ||
2173 | if (netif_running(netdev)) | |
2174 | atl1e_free_irq(adapter); | |
2175 | ||
2176 | pci_disable_device(pdev); | |
2177 | ||
2178 | pci_set_power_state(pdev, pci_choose_state(pdev, state)); | |
2179 | ||
2180 | return 0; | |
2181 | } | |
2182 | ||
d6f8aa85 | 2183 | #ifdef CONFIG_PM |
a6a53252 JY |
2184 | static int atl1e_resume(struct pci_dev *pdev) |
2185 | { | |
2186 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2187 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
2188 | u32 err; | |
2189 | ||
2190 | pci_set_power_state(pdev, PCI_D0); | |
2191 | pci_restore_state(pdev); | |
2192 | ||
2193 | err = pci_enable_device(pdev); | |
2194 | if (err) { | |
ba211e3e JP |
2195 | netdev_err(adapter->netdev, |
2196 | "Cannot enable PCI device from suspend\n"); | |
a6a53252 JY |
2197 | return err; |
2198 | } | |
2199 | ||
2200 | pci_set_master(pdev); | |
2201 | ||
2202 | AT_READ_REG(&adapter->hw, REG_WOL_CTRL); /* clear WOL status */ | |
2203 | ||
2204 | pci_enable_wake(pdev, PCI_D3hot, 0); | |
2205 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
2206 | ||
2207 | AT_WRITE_REG(&adapter->hw, REG_WOL_CTRL, 0); | |
2208 | ||
50f684b9 | 2209 | if (netif_running(netdev)) { |
a6a53252 JY |
2210 | err = atl1e_request_irq(adapter); |
2211 | if (err) | |
2212 | return err; | |
50f684b9 | 2213 | } |
a6a53252 JY |
2214 | |
2215 | atl1e_reset_hw(&adapter->hw); | |
2216 | ||
2217 | if (netif_running(netdev)) | |
2218 | atl1e_up(adapter); | |
2219 | ||
2220 | netif_device_attach(netdev); | |
2221 | ||
2222 | return 0; | |
2223 | } | |
2224 | #endif | |
2225 | ||
2226 | static void atl1e_shutdown(struct pci_dev *pdev) | |
2227 | { | |
2228 | atl1e_suspend(pdev, PMSG_SUSPEND); | |
2229 | } | |
2230 | ||
1e058ab5 SH |
2231 | static const struct net_device_ops atl1e_netdev_ops = { |
2232 | .ndo_open = atl1e_open, | |
2233 | .ndo_stop = atl1e_close, | |
00829823 | 2234 | .ndo_start_xmit = atl1e_xmit_frame, |
1e058ab5 | 2235 | .ndo_get_stats = atl1e_get_stats, |
afc4b13d | 2236 | .ndo_set_rx_mode = atl1e_set_multi, |
1e058ab5 SH |
2237 | .ndo_validate_addr = eth_validate_addr, |
2238 | .ndo_set_mac_address = atl1e_set_mac_addr, | |
2707fffc JP |
2239 | .ndo_fix_features = atl1e_fix_features, |
2240 | .ndo_set_features = atl1e_set_features, | |
1e058ab5 SH |
2241 | .ndo_change_mtu = atl1e_change_mtu, |
2242 | .ndo_do_ioctl = atl1e_ioctl, | |
2243 | .ndo_tx_timeout = atl1e_tx_timeout, | |
1e058ab5 SH |
2244 | #ifdef CONFIG_NET_POLL_CONTROLLER |
2245 | .ndo_poll_controller = atl1e_netpoll, | |
2246 | #endif | |
2247 | ||
2248 | }; | |
2249 | ||
a6a53252 JY |
2250 | static int atl1e_init_netdev(struct net_device *netdev, struct pci_dev *pdev) |
2251 | { | |
2252 | SET_NETDEV_DEV(netdev, &pdev->dev); | |
2253 | pci_set_drvdata(pdev, netdev); | |
2254 | ||
1e058ab5 | 2255 | netdev->netdev_ops = &atl1e_netdev_ops; |
00829823 | 2256 | |
a6a53252 | 2257 | netdev->watchdog_timeo = AT_TX_WATCHDOG; |
67bef942 JW |
2258 | /* MTU range: 42 - 8170 */ |
2259 | netdev->min_mtu = ETH_ZLEN - (ETH_HLEN + VLAN_HLEN); | |
2260 | netdev->max_mtu = MAX_JUMBO_FRAME_SIZE - | |
2261 | (ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN); | |
a6a53252 JY |
2262 | atl1e_set_ethtool_ops(netdev); |
2263 | ||
782d640a | 2264 | netdev->hw_features = NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_TSO | |
f646968f | 2265 | NETIF_F_HW_VLAN_CTAG_RX; |
4acff371 | 2266 | netdev->features = netdev->hw_features | NETIF_F_HW_VLAN_CTAG_TX; |
40dc9ab2 AM |
2267 | /* not enabled by default */ |
2268 | netdev->hw_features |= NETIF_F_RXALL | NETIF_F_RXFCS; | |
a6a53252 JY |
2269 | return 0; |
2270 | } | |
2271 | ||
49ce9c2c | 2272 | /** |
a6a53252 JY |
2273 | * atl1e_probe - Device Initialization Routine |
2274 | * @pdev: PCI device information struct | |
2275 | * @ent: entry in atl1e_pci_tbl | |
2276 | * | |
2277 | * Returns 0 on success, negative on failure | |
2278 | * | |
2279 | * atl1e_probe initializes an adapter identified by a pci_dev structure. | |
2280 | * The OS initialization, configuring of the adapter private structure, | |
2281 | * and a hardware reset occur. | |
2282 | */ | |
1dd06ae8 | 2283 | static int atl1e_probe(struct pci_dev *pdev, const struct pci_device_id *ent) |
a6a53252 JY |
2284 | { |
2285 | struct net_device *netdev; | |
2286 | struct atl1e_adapter *adapter = NULL; | |
2287 | static int cards_found; | |
2288 | ||
2289 | int err = 0; | |
2290 | ||
2291 | err = pci_enable_device(pdev); | |
2292 | if (err) { | |
2293 | dev_err(&pdev->dev, "cannot enable PCI device\n"); | |
2294 | return err; | |
2295 | } | |
2296 | ||
2297 | /* | |
2298 | * The atl1e chip can DMA to 64-bit addresses, but it uses a single | |
2299 | * shared register for the high 32 bits, so only a single, aligned, | |
2300 | * 4 GB physical address range can be used at a time. | |
2301 | * | |
2302 | * Supporting 64-bit DMA on this hardware is more trouble than it's | |
2303 | * worth. It is far easier to limit to 32-bit DMA than update | |
2304 | * various kernel subsystems to support the mechanics required by a | |
2305 | * fixed-high-32-bit system. | |
2306 | */ | |
284901a9 YH |
2307 | if ((pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) || |
2308 | (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)) { | |
a6a53252 JY |
2309 | dev_err(&pdev->dev, "No usable DMA configuration,aborting\n"); |
2310 | goto err_dma; | |
2311 | } | |
2312 | ||
2313 | err = pci_request_regions(pdev, atl1e_driver_name); | |
2314 | if (err) { | |
2315 | dev_err(&pdev->dev, "cannot obtain PCI resources\n"); | |
2316 | goto err_pci_reg; | |
2317 | } | |
2318 | ||
2319 | pci_set_master(pdev); | |
2320 | ||
2321 | netdev = alloc_etherdev(sizeof(struct atl1e_adapter)); | |
2322 | if (netdev == NULL) { | |
2323 | err = -ENOMEM; | |
a6a53252 JY |
2324 | goto err_alloc_etherdev; |
2325 | } | |
2326 | ||
2327 | err = atl1e_init_netdev(netdev, pdev); | |
2328 | if (err) { | |
ba211e3e | 2329 | netdev_err(netdev, "init netdevice failed\n"); |
a6a53252 JY |
2330 | goto err_init_netdev; |
2331 | } | |
2332 | adapter = netdev_priv(netdev); | |
2333 | adapter->bd_number = cards_found; | |
2334 | adapter->netdev = netdev; | |
2335 | adapter->pdev = pdev; | |
2336 | adapter->hw.adapter = adapter; | |
2337 | adapter->hw.hw_addr = pci_iomap(pdev, BAR_0, 0); | |
2338 | if (!adapter->hw.hw_addr) { | |
2339 | err = -EIO; | |
ba211e3e | 2340 | netdev_err(netdev, "cannot map device registers\n"); |
a6a53252 JY |
2341 | goto err_ioremap; |
2342 | } | |
a6a53252 JY |
2343 | |
2344 | /* init mii data */ | |
2345 | adapter->mii.dev = netdev; | |
2346 | adapter->mii.mdio_read = atl1e_mdio_read; | |
2347 | adapter->mii.mdio_write = atl1e_mdio_write; | |
2348 | adapter->mii.phy_id_mask = 0x1f; | |
2349 | adapter->mii.reg_num_mask = MDIO_REG_ADDR_MASK; | |
2350 | ||
2351 | netif_napi_add(netdev, &adapter->napi, atl1e_clean, 64); | |
2352 | ||
e99e88a9 | 2353 | timer_setup(&adapter->phy_config_timer, atl1e_phy_config, 0); |
a6a53252 JY |
2354 | |
2355 | /* get user settings */ | |
2356 | atl1e_check_options(adapter); | |
2357 | /* | |
2358 | * Mark all PCI regions associated with PCI device | |
2359 | * pdev as being reserved by owner atl1e_driver_name | |
2360 | * Enables bus-mastering on the device and calls | |
2361 | * pcibios_set_master to do the needed arch specific settings | |
2362 | */ | |
2363 | atl1e_setup_pcicmd(pdev); | |
2364 | /* setup the private structure */ | |
2365 | err = atl1e_sw_init(adapter); | |
2366 | if (err) { | |
ba211e3e | 2367 | netdev_err(netdev, "net device private data init failed\n"); |
a6a53252 JY |
2368 | goto err_sw_init; |
2369 | } | |
2370 | ||
2371 | /* Init GPHY as early as possible due to power saving issue */ | |
a6a53252 | 2372 | atl1e_phy_init(&adapter->hw); |
a6a53252 JY |
2373 | /* reset the controller to |
2374 | * put the device in a known good starting state */ | |
2375 | err = atl1e_reset_hw(&adapter->hw); | |
2376 | if (err) { | |
2377 | err = -EIO; | |
2378 | goto err_reset; | |
2379 | } | |
2380 | ||
2381 | if (atl1e_read_mac_addr(&adapter->hw) != 0) { | |
2382 | err = -EIO; | |
ba211e3e | 2383 | netdev_err(netdev, "get mac address failed\n"); |
a6a53252 JY |
2384 | goto err_eeprom; |
2385 | } | |
2386 | ||
2387 | memcpy(netdev->dev_addr, adapter->hw.mac_addr, netdev->addr_len); | |
ba211e3e | 2388 | netdev_dbg(netdev, "mac address : %pM\n", adapter->hw.mac_addr); |
a6a53252 JY |
2389 | |
2390 | INIT_WORK(&adapter->reset_task, atl1e_reset_task); | |
2391 | INIT_WORK(&adapter->link_chg_task, atl1e_link_chg_task); | |
31d1670e | 2392 | netif_set_gso_max_size(netdev, MAX_TSO_SEG_SIZE); |
a6a53252 JY |
2393 | err = register_netdev(netdev); |
2394 | if (err) { | |
ba211e3e | 2395 | netdev_err(netdev, "register netdevice failed\n"); |
a6a53252 JY |
2396 | goto err_register; |
2397 | } | |
2398 | ||
2399 | /* assume we have no link for now */ | |
2400 | netif_stop_queue(netdev); | |
2401 | netif_carrier_off(netdev); | |
2402 | ||
2403 | cards_found++; | |
2404 | ||
2405 | return 0; | |
2406 | ||
2407 | err_reset: | |
2408 | err_register: | |
2409 | err_sw_init: | |
2410 | err_eeprom: | |
3e3d3540 | 2411 | pci_iounmap(pdev, adapter->hw.hw_addr); |
a6a53252 JY |
2412 | err_init_netdev: |
2413 | err_ioremap: | |
2414 | free_netdev(netdev); | |
2415 | err_alloc_etherdev: | |
2416 | pci_release_regions(pdev); | |
2417 | err_pci_reg: | |
2418 | err_dma: | |
2419 | pci_disable_device(pdev); | |
2420 | return err; | |
2421 | } | |
2422 | ||
49ce9c2c | 2423 | /** |
a6a53252 JY |
2424 | * atl1e_remove - Device Removal Routine |
2425 | * @pdev: PCI device information struct | |
2426 | * | |
2427 | * atl1e_remove is called by the PCI subsystem to alert the driver | |
2428 | * that it should release a PCI device. The could be caused by a | |
2429 | * Hot-Plug event, or because the driver is going to be removed from | |
2430 | * memory. | |
2431 | */ | |
093d369d | 2432 | static void atl1e_remove(struct pci_dev *pdev) |
a6a53252 JY |
2433 | { |
2434 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2435 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
2436 | ||
2437 | /* | |
2438 | * flush_scheduled work may reschedule our watchdog task, so | |
2439 | * explicitly disable watchdog tasks from being rescheduled | |
2440 | */ | |
2441 | set_bit(__AT_DOWN, &adapter->flags); | |
2442 | ||
2443 | atl1e_del_timer(adapter); | |
2444 | atl1e_cancel_work(adapter); | |
2445 | ||
2446 | unregister_netdev(netdev); | |
2447 | atl1e_free_ring_resources(adapter); | |
2448 | atl1e_force_ps(&adapter->hw); | |
3e3d3540 | 2449 | pci_iounmap(pdev, adapter->hw.hw_addr); |
a6a53252 JY |
2450 | pci_release_regions(pdev); |
2451 | free_netdev(netdev); | |
2452 | pci_disable_device(pdev); | |
2453 | } | |
2454 | ||
49ce9c2c | 2455 | /** |
a6a53252 JY |
2456 | * atl1e_io_error_detected - called when PCI error is detected |
2457 | * @pdev: Pointer to PCI device | |
2458 | * @state: The current pci connection state | |
2459 | * | |
2460 | * This function is called after a PCI bus error affecting | |
2461 | * this device has been detected. | |
2462 | */ | |
2463 | static pci_ers_result_t | |
2464 | atl1e_io_error_detected(struct pci_dev *pdev, pci_channel_state_t state) | |
2465 | { | |
2466 | struct net_device *netdev = pci_get_drvdata(pdev); | |
454d7c9b | 2467 | struct atl1e_adapter *adapter = netdev_priv(netdev); |
a6a53252 JY |
2468 | |
2469 | netif_device_detach(netdev); | |
2470 | ||
0d6ab58d DN |
2471 | if (state == pci_channel_io_perm_failure) |
2472 | return PCI_ERS_RESULT_DISCONNECT; | |
2473 | ||
a6a53252 JY |
2474 | if (netif_running(netdev)) |
2475 | atl1e_down(adapter); | |
2476 | ||
2477 | pci_disable_device(pdev); | |
2478 | ||
2479 | /* Request a slot slot reset. */ | |
2480 | return PCI_ERS_RESULT_NEED_RESET; | |
2481 | } | |
2482 | ||
49ce9c2c | 2483 | /** |
a6a53252 JY |
2484 | * atl1e_io_slot_reset - called after the pci bus has been reset. |
2485 | * @pdev: Pointer to PCI device | |
2486 | * | |
2487 | * Restart the card from scratch, as if from a cold-boot. Implementation | |
2488 | * resembles the first-half of the e1000_resume routine. | |
2489 | */ | |
2490 | static pci_ers_result_t atl1e_io_slot_reset(struct pci_dev *pdev) | |
2491 | { | |
2492 | struct net_device *netdev = pci_get_drvdata(pdev); | |
454d7c9b | 2493 | struct atl1e_adapter *adapter = netdev_priv(netdev); |
a6a53252 JY |
2494 | |
2495 | if (pci_enable_device(pdev)) { | |
ba211e3e JP |
2496 | netdev_err(adapter->netdev, |
2497 | "Cannot re-enable PCI device after reset\n"); | |
a6a53252 JY |
2498 | return PCI_ERS_RESULT_DISCONNECT; |
2499 | } | |
2500 | pci_set_master(pdev); | |
2501 | ||
2502 | pci_enable_wake(pdev, PCI_D3hot, 0); | |
2503 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
2504 | ||
2505 | atl1e_reset_hw(&adapter->hw); | |
2506 | ||
2507 | return PCI_ERS_RESULT_RECOVERED; | |
2508 | } | |
2509 | ||
49ce9c2c | 2510 | /** |
a6a53252 JY |
2511 | * atl1e_io_resume - called when traffic can start flowing again. |
2512 | * @pdev: Pointer to PCI device | |
2513 | * | |
2514 | * This callback is called when the error recovery driver tells us that | |
2515 | * its OK to resume normal operation. Implementation resembles the | |
2516 | * second-half of the atl1e_resume routine. | |
2517 | */ | |
2518 | static void atl1e_io_resume(struct pci_dev *pdev) | |
2519 | { | |
2520 | struct net_device *netdev = pci_get_drvdata(pdev); | |
454d7c9b | 2521 | struct atl1e_adapter *adapter = netdev_priv(netdev); |
a6a53252 JY |
2522 | |
2523 | if (netif_running(netdev)) { | |
2524 | if (atl1e_up(adapter)) { | |
ba211e3e JP |
2525 | netdev_err(adapter->netdev, |
2526 | "can't bring device back up after reset\n"); | |
a6a53252 JY |
2527 | return; |
2528 | } | |
2529 | } | |
2530 | ||
2531 | netif_device_attach(netdev); | |
2532 | } | |
2533 | ||
3646f0e5 | 2534 | static const struct pci_error_handlers atl1e_err_handler = { |
a6a53252 JY |
2535 | .error_detected = atl1e_io_error_detected, |
2536 | .slot_reset = atl1e_io_slot_reset, | |
2537 | .resume = atl1e_io_resume, | |
2538 | }; | |
2539 | ||
2540 | static struct pci_driver atl1e_driver = { | |
2541 | .name = atl1e_driver_name, | |
2542 | .id_table = atl1e_pci_tbl, | |
2543 | .probe = atl1e_probe, | |
093d369d | 2544 | .remove = atl1e_remove, |
25985edc | 2545 | /* Power Management Hooks */ |
a6a53252 JY |
2546 | #ifdef CONFIG_PM |
2547 | .suspend = atl1e_suspend, | |
2548 | .resume = atl1e_resume, | |
2549 | #endif | |
2550 | .shutdown = atl1e_shutdown, | |
2551 | .err_handler = &atl1e_err_handler | |
2552 | }; | |
2553 | ||
687df5d4 | 2554 | module_pci_driver(atl1e_driver); |