Commit | Line | Data |
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43250ddd JY |
1 | /* |
2 | * Copyright(c) 2008 - 2009 Atheros Corporation. All rights reserved. | |
3 | * | |
4 | * Derived from Intel e1000 driver | |
5 | * Copyright(c) 1999 - 2005 Intel Corporation. All rights reserved. | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the Free | |
9 | * Software Foundation; either version 2 of the License, or (at your option) | |
10 | * any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
13 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
15 | * more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License along with | |
18 | * this program; if not, write to the Free Software Foundation, Inc., 59 | |
19 | * Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
20 | */ | |
21 | ||
22 | #include "atl1c.h" | |
23 | ||
8f574b35 | 24 | #define ATL1C_DRV_VERSION "1.0.1.0-NAPI" |
43250ddd JY |
25 | char atl1c_driver_name[] = "atl1c"; |
26 | char atl1c_driver_version[] = ATL1C_DRV_VERSION; | |
27 | #define PCI_DEVICE_ID_ATTANSIC_L2C 0x1062 | |
28 | #define PCI_DEVICE_ID_ATTANSIC_L1C 0x1063 | |
496c185c LR |
29 | #define PCI_DEVICE_ID_ATHEROS_L2C_B 0x2060 /* AR8152 v1.1 Fast 10/100 */ |
30 | #define PCI_DEVICE_ID_ATHEROS_L2C_B2 0x2062 /* AR8152 v2.0 Fast 10/100 */ | |
31 | #define PCI_DEVICE_ID_ATHEROS_L1D 0x1073 /* AR8151 v1.0 Gigabit 1000 */ | |
8f574b35 | 32 | #define PCI_DEVICE_ID_ATHEROS_L1D_2_0 0x1083 /* AR8151 v2.0 Gigabit 1000 */ |
496c185c LR |
33 | #define L2CB_V10 0xc0 |
34 | #define L2CB_V11 0xc1 | |
35 | ||
43250ddd JY |
36 | /* |
37 | * atl1c_pci_tbl - PCI Device ID Table | |
38 | * | |
39 | * Wildcard entries (PCI_ANY_ID) should come last | |
40 | * Last entry must be all 0s | |
41 | * | |
42 | * { Vendor ID, Device ID, SubVendor ID, SubDevice ID, | |
43 | * Class, Class Mask, private data (not used) } | |
44 | */ | |
a3aa1884 | 45 | static DEFINE_PCI_DEVICE_TABLE(atl1c_pci_tbl) = { |
43250ddd JY |
46 | {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC, PCI_DEVICE_ID_ATTANSIC_L1C)}, |
47 | {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC, PCI_DEVICE_ID_ATTANSIC_L2C)}, | |
496c185c LR |
48 | {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC, PCI_DEVICE_ID_ATHEROS_L2C_B)}, |
49 | {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC, PCI_DEVICE_ID_ATHEROS_L2C_B2)}, | |
50 | {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC, PCI_DEVICE_ID_ATHEROS_L1D)}, | |
94dde7e4 | 51 | {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC, PCI_DEVICE_ID_ATHEROS_L1D_2_0)}, |
43250ddd JY |
52 | /* required last entry */ |
53 | { 0 } | |
54 | }; | |
55 | MODULE_DEVICE_TABLE(pci, atl1c_pci_tbl); | |
56 | ||
57 | MODULE_AUTHOR("Jie Yang <jie.yang@atheros.com>"); | |
58 | MODULE_DESCRIPTION("Atheros 1000M Ethernet Network Driver"); | |
59 | MODULE_LICENSE("GPL"); | |
60 | MODULE_VERSION(ATL1C_DRV_VERSION); | |
61 | ||
62 | static int atl1c_stop_mac(struct atl1c_hw *hw); | |
63 | static void atl1c_enable_rx_ctrl(struct atl1c_hw *hw); | |
64 | static void atl1c_enable_tx_ctrl(struct atl1c_hw *hw); | |
65 | static void atl1c_disable_l0s_l1(struct atl1c_hw *hw); | |
66 | static void atl1c_set_aspm(struct atl1c_hw *hw, bool linkup); | |
67 | static void atl1c_setup_mac_ctrl(struct atl1c_adapter *adapter); | |
68 | static void atl1c_clean_rx_irq(struct atl1c_adapter *adapter, u8 que, | |
69 | int *work_done, int work_to_do); | |
0fb1e54e | 70 | static int atl1c_up(struct atl1c_adapter *adapter); |
71 | static void atl1c_down(struct atl1c_adapter *adapter); | |
43250ddd JY |
72 | |
73 | static const u16 atl1c_pay_load_size[] = { | |
74 | 128, 256, 512, 1024, 2048, 4096, | |
75 | }; | |
76 | ||
77 | static const u16 atl1c_rfd_prod_idx_regs[AT_MAX_RECEIVE_QUEUE] = | |
78 | { | |
79 | REG_MB_RFD0_PROD_IDX, | |
80 | REG_MB_RFD1_PROD_IDX, | |
81 | REG_MB_RFD2_PROD_IDX, | |
82 | REG_MB_RFD3_PROD_IDX | |
83 | }; | |
84 | ||
85 | static const u16 atl1c_rfd_addr_lo_regs[AT_MAX_RECEIVE_QUEUE] = | |
86 | { | |
87 | REG_RFD0_HEAD_ADDR_LO, | |
88 | REG_RFD1_HEAD_ADDR_LO, | |
89 | REG_RFD2_HEAD_ADDR_LO, | |
90 | REG_RFD3_HEAD_ADDR_LO | |
91 | }; | |
92 | ||
93 | static const u16 atl1c_rrd_addr_lo_regs[AT_MAX_RECEIVE_QUEUE] = | |
94 | { | |
95 | REG_RRD0_HEAD_ADDR_LO, | |
96 | REG_RRD1_HEAD_ADDR_LO, | |
97 | REG_RRD2_HEAD_ADDR_LO, | |
98 | REG_RRD3_HEAD_ADDR_LO | |
99 | }; | |
100 | ||
101 | static const u32 atl1c_default_msg = NETIF_MSG_DRV | NETIF_MSG_PROBE | | |
102 | NETIF_MSG_LINK | NETIF_MSG_TIMER | NETIF_MSG_IFDOWN | NETIF_MSG_IFUP; | |
8f574b35 JY |
103 | static void atl1c_pcie_patch(struct atl1c_hw *hw) |
104 | { | |
105 | u32 data; | |
43250ddd | 106 | |
8f574b35 JY |
107 | AT_READ_REG(hw, REG_PCIE_PHYMISC, &data); |
108 | data |= PCIE_PHYMISC_FORCE_RCV_DET; | |
109 | AT_WRITE_REG(hw, REG_PCIE_PHYMISC, data); | |
110 | ||
111 | if (hw->nic_type == athr_l2c_b && hw->revision_id == L2CB_V10) { | |
112 | AT_READ_REG(hw, REG_PCIE_PHYMISC2, &data); | |
113 | ||
114 | data &= ~(PCIE_PHYMISC2_SERDES_CDR_MASK << | |
115 | PCIE_PHYMISC2_SERDES_CDR_SHIFT); | |
116 | data |= 3 << PCIE_PHYMISC2_SERDES_CDR_SHIFT; | |
117 | data &= ~(PCIE_PHYMISC2_SERDES_TH_MASK << | |
118 | PCIE_PHYMISC2_SERDES_TH_SHIFT); | |
119 | data |= 3 << PCIE_PHYMISC2_SERDES_TH_SHIFT; | |
120 | AT_WRITE_REG(hw, REG_PCIE_PHYMISC2, data); | |
121 | } | |
122 | } | |
123 | ||
124 | /* FIXME: no need any more ? */ | |
43250ddd JY |
125 | /* |
126 | * atl1c_init_pcie - init PCIE module | |
127 | */ | |
128 | static void atl1c_reset_pcie(struct atl1c_hw *hw, u32 flag) | |
129 | { | |
130 | u32 data; | |
131 | u32 pci_cmd; | |
132 | struct pci_dev *pdev = hw->adapter->pdev; | |
133 | ||
134 | AT_READ_REG(hw, PCI_COMMAND, &pci_cmd); | |
135 | pci_cmd &= ~PCI_COMMAND_INTX_DISABLE; | |
136 | pci_cmd |= (PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER | | |
137 | PCI_COMMAND_IO); | |
138 | AT_WRITE_REG(hw, PCI_COMMAND, pci_cmd); | |
139 | ||
140 | /* | |
141 | * Clear any PowerSaveing Settings | |
142 | */ | |
143 | pci_enable_wake(pdev, PCI_D3hot, 0); | |
144 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
145 | ||
146 | /* | |
147 | * Mask some pcie error bits | |
148 | */ | |
149 | AT_READ_REG(hw, REG_PCIE_UC_SEVERITY, &data); | |
150 | data &= ~PCIE_UC_SERVRITY_DLP; | |
151 | data &= ~PCIE_UC_SERVRITY_FCP; | |
152 | AT_WRITE_REG(hw, REG_PCIE_UC_SEVERITY, data); | |
153 | ||
8f574b35 JY |
154 | AT_READ_REG(hw, REG_LTSSM_ID_CTRL, &data); |
155 | data &= ~LTSSM_ID_EN_WRO; | |
156 | AT_WRITE_REG(hw, REG_LTSSM_ID_CTRL, data); | |
157 | ||
158 | atl1c_pcie_patch(hw); | |
43250ddd JY |
159 | if (flag & ATL1C_PCIE_L0S_L1_DISABLE) |
160 | atl1c_disable_l0s_l1(hw); | |
161 | if (flag & ATL1C_PCIE_PHY_RESET) | |
162 | AT_WRITE_REG(hw, REG_GPHY_CTRL, GPHY_CTRL_DEFAULT); | |
163 | else | |
164 | AT_WRITE_REG(hw, REG_GPHY_CTRL, | |
165 | GPHY_CTRL_DEFAULT | GPHY_CTRL_EXT_RESET); | |
166 | ||
8f574b35 | 167 | msleep(5); |
43250ddd JY |
168 | } |
169 | ||
170 | /* | |
171 | * atl1c_irq_enable - Enable default interrupt generation settings | |
172 | * @adapter: board private structure | |
173 | */ | |
174 | static inline void atl1c_irq_enable(struct atl1c_adapter *adapter) | |
175 | { | |
176 | if (likely(atomic_dec_and_test(&adapter->irq_sem))) { | |
177 | AT_WRITE_REG(&adapter->hw, REG_ISR, 0x7FFFFFFF); | |
178 | AT_WRITE_REG(&adapter->hw, REG_IMR, adapter->hw.intr_mask); | |
179 | AT_WRITE_FLUSH(&adapter->hw); | |
180 | } | |
181 | } | |
182 | ||
183 | /* | |
184 | * atl1c_irq_disable - Mask off interrupt generation on the NIC | |
185 | * @adapter: board private structure | |
186 | */ | |
187 | static inline void atl1c_irq_disable(struct atl1c_adapter *adapter) | |
188 | { | |
189 | atomic_inc(&adapter->irq_sem); | |
190 | AT_WRITE_REG(&adapter->hw, REG_IMR, 0); | |
8f574b35 | 191 | AT_WRITE_REG(&adapter->hw, REG_ISR, ISR_DIS_INT); |
43250ddd JY |
192 | AT_WRITE_FLUSH(&adapter->hw); |
193 | synchronize_irq(adapter->pdev->irq); | |
194 | } | |
195 | ||
196 | /* | |
197 | * atl1c_irq_reset - reset interrupt confiure on the NIC | |
198 | * @adapter: board private structure | |
199 | */ | |
200 | static inline void atl1c_irq_reset(struct atl1c_adapter *adapter) | |
201 | { | |
202 | atomic_set(&adapter->irq_sem, 1); | |
203 | atl1c_irq_enable(adapter); | |
204 | } | |
205 | ||
c930a662 JP |
206 | /* |
207 | * atl1c_wait_until_idle - wait up to AT_HW_MAX_IDLE_DELAY reads | |
208 | * of the idle status register until the device is actually idle | |
209 | */ | |
210 | static u32 atl1c_wait_until_idle(struct atl1c_hw *hw) | |
211 | { | |
212 | int timeout; | |
213 | u32 data; | |
214 | ||
215 | for (timeout = 0; timeout < AT_HW_MAX_IDLE_DELAY; timeout++) { | |
216 | AT_READ_REG(hw, REG_IDLE_STATUS, &data); | |
217 | if ((data & IDLE_STATUS_MASK) == 0) | |
218 | return 0; | |
219 | msleep(1); | |
220 | } | |
221 | return data; | |
222 | } | |
223 | ||
43250ddd JY |
224 | /* |
225 | * atl1c_phy_config - Timer Call-back | |
226 | * @data: pointer to netdev cast into an unsigned long | |
227 | */ | |
228 | static void atl1c_phy_config(unsigned long data) | |
229 | { | |
230 | struct atl1c_adapter *adapter = (struct atl1c_adapter *) data; | |
231 | struct atl1c_hw *hw = &adapter->hw; | |
232 | unsigned long flags; | |
233 | ||
234 | spin_lock_irqsave(&adapter->mdio_lock, flags); | |
235 | atl1c_restart_autoneg(hw); | |
236 | spin_unlock_irqrestore(&adapter->mdio_lock, flags); | |
237 | } | |
238 | ||
239 | void atl1c_reinit_locked(struct atl1c_adapter *adapter) | |
240 | { | |
43250ddd JY |
241 | WARN_ON(in_interrupt()); |
242 | atl1c_down(adapter); | |
243 | atl1c_up(adapter); | |
244 | clear_bit(__AT_RESETTING, &adapter->flags); | |
245 | } | |
246 | ||
43250ddd JY |
247 | static void atl1c_check_link_status(struct atl1c_adapter *adapter) |
248 | { | |
249 | struct atl1c_hw *hw = &adapter->hw; | |
250 | struct net_device *netdev = adapter->netdev; | |
251 | struct pci_dev *pdev = adapter->pdev; | |
252 | int err; | |
253 | unsigned long flags; | |
254 | u16 speed, duplex, phy_data; | |
255 | ||
256 | spin_lock_irqsave(&adapter->mdio_lock, flags); | |
257 | /* MII_BMSR must read twise */ | |
258 | atl1c_read_phy_reg(hw, MII_BMSR, &phy_data); | |
259 | atl1c_read_phy_reg(hw, MII_BMSR, &phy_data); | |
260 | spin_unlock_irqrestore(&adapter->mdio_lock, flags); | |
261 | ||
262 | if ((phy_data & BMSR_LSTATUS) == 0) { | |
263 | /* link down */ | |
8f574b35 JY |
264 | hw->hibernate = true; |
265 | if (atl1c_stop_mac(hw) != 0) | |
266 | if (netif_msg_hw(adapter)) | |
267 | dev_warn(&pdev->dev, "stop mac failed\n"); | |
268 | atl1c_set_aspm(hw, false); | |
43250ddd | 269 | netif_carrier_off(netdev); |
8f574b35 JY |
270 | netif_stop_queue(netdev); |
271 | atl1c_phy_reset(hw); | |
272 | atl1c_phy_init(&adapter->hw); | |
43250ddd JY |
273 | } else { |
274 | /* Link Up */ | |
275 | hw->hibernate = false; | |
276 | spin_lock_irqsave(&adapter->mdio_lock, flags); | |
277 | err = atl1c_get_speed_and_duplex(hw, &speed, &duplex); | |
278 | spin_unlock_irqrestore(&adapter->mdio_lock, flags); | |
279 | if (unlikely(err)) | |
280 | return; | |
281 | /* link result is our setting */ | |
282 | if (adapter->link_speed != speed || | |
283 | adapter->link_duplex != duplex) { | |
284 | adapter->link_speed = speed; | |
285 | adapter->link_duplex = duplex; | |
52fbc100 | 286 | atl1c_set_aspm(hw, true); |
43250ddd JY |
287 | atl1c_enable_tx_ctrl(hw); |
288 | atl1c_enable_rx_ctrl(hw); | |
289 | atl1c_setup_mac_ctrl(adapter); | |
43250ddd JY |
290 | if (netif_msg_link(adapter)) |
291 | dev_info(&pdev->dev, | |
292 | "%s: %s NIC Link is Up<%d Mbps %s>\n", | |
293 | atl1c_driver_name, netdev->name, | |
294 | adapter->link_speed, | |
295 | adapter->link_duplex == FULL_DUPLEX ? | |
296 | "Full Duplex" : "Half Duplex"); | |
297 | } | |
298 | if (!netif_carrier_ok(netdev)) | |
299 | netif_carrier_on(netdev); | |
300 | } | |
301 | } | |
302 | ||
43250ddd JY |
303 | static void atl1c_link_chg_event(struct atl1c_adapter *adapter) |
304 | { | |
305 | struct net_device *netdev = adapter->netdev; | |
306 | struct pci_dev *pdev = adapter->pdev; | |
307 | u16 phy_data; | |
308 | u16 link_up; | |
309 | ||
310 | spin_lock(&adapter->mdio_lock); | |
311 | atl1c_read_phy_reg(&adapter->hw, MII_BMSR, &phy_data); | |
312 | atl1c_read_phy_reg(&adapter->hw, MII_BMSR, &phy_data); | |
313 | spin_unlock(&adapter->mdio_lock); | |
314 | link_up = phy_data & BMSR_LSTATUS; | |
315 | /* notify upper layer link down ASAP */ | |
316 | if (!link_up) { | |
317 | if (netif_carrier_ok(netdev)) { | |
318 | /* old link state: Up */ | |
319 | netif_carrier_off(netdev); | |
320 | if (netif_msg_link(adapter)) | |
321 | dev_info(&pdev->dev, | |
322 | "%s: %s NIC Link is Down\n", | |
323 | atl1c_driver_name, netdev->name); | |
324 | adapter->link_speed = SPEED_0; | |
325 | } | |
326 | } | |
cb190546 | 327 | |
cb771838 | 328 | set_bit(ATL1C_WORK_EVENT_LINK_CHANGE, &adapter->work_event); |
cb190546 | 329 | schedule_work(&adapter->common_task); |
43250ddd JY |
330 | } |
331 | ||
cb190546 | 332 | static void atl1c_common_task(struct work_struct *work) |
43250ddd | 333 | { |
cb190546 JY |
334 | struct atl1c_adapter *adapter; |
335 | struct net_device *netdev; | |
336 | ||
337 | adapter = container_of(work, struct atl1c_adapter, common_task); | |
338 | netdev = adapter->netdev; | |
339 | ||
cb771838 | 340 | if (test_and_clear_bit(ATL1C_WORK_EVENT_RESET, &adapter->work_event)) { |
cb190546 JY |
341 | netif_device_detach(netdev); |
342 | atl1c_down(adapter); | |
343 | atl1c_up(adapter); | |
344 | netif_device_attach(netdev); | |
cb190546 JY |
345 | } |
346 | ||
cb771838 TG |
347 | if (test_and_clear_bit(ATL1C_WORK_EVENT_LINK_CHANGE, |
348 | &adapter->work_event)) | |
cb190546 | 349 | atl1c_check_link_status(adapter); |
43250ddd JY |
350 | } |
351 | ||
cb190546 JY |
352 | |
353 | static void atl1c_del_timer(struct atl1c_adapter *adapter) | |
43250ddd | 354 | { |
cb190546 | 355 | del_timer_sync(&adapter->phy_config_timer); |
43250ddd JY |
356 | } |
357 | ||
cb190546 | 358 | |
43250ddd JY |
359 | /* |
360 | * atl1c_tx_timeout - Respond to a Tx Hang | |
361 | * @netdev: network interface device structure | |
362 | */ | |
363 | static void atl1c_tx_timeout(struct net_device *netdev) | |
364 | { | |
365 | struct atl1c_adapter *adapter = netdev_priv(netdev); | |
366 | ||
367 | /* Do the reset outside of interrupt context */ | |
cb771838 | 368 | set_bit(ATL1C_WORK_EVENT_RESET, &adapter->work_event); |
cb190546 | 369 | schedule_work(&adapter->common_task); |
43250ddd JY |
370 | } |
371 | ||
372 | /* | |
373 | * atl1c_set_multi - Multicast and Promiscuous mode set | |
374 | * @netdev: network interface device structure | |
375 | * | |
376 | * The set_multi entry point is called whenever the multicast address | |
377 | * list or the network interface flags are updated. This routine is | |
378 | * responsible for configuring the hardware for proper multicast, | |
379 | * promiscuous mode, and all-multi behavior. | |
380 | */ | |
381 | static void atl1c_set_multi(struct net_device *netdev) | |
382 | { | |
383 | struct atl1c_adapter *adapter = netdev_priv(netdev); | |
384 | struct atl1c_hw *hw = &adapter->hw; | |
22bedad3 | 385 | struct netdev_hw_addr *ha; |
43250ddd JY |
386 | u32 mac_ctrl_data; |
387 | u32 hash_value; | |
388 | ||
389 | /* Check for Promiscuous and All Multicast modes */ | |
390 | AT_READ_REG(hw, REG_MAC_CTRL, &mac_ctrl_data); | |
391 | ||
392 | if (netdev->flags & IFF_PROMISC) { | |
393 | mac_ctrl_data |= MAC_CTRL_PROMIS_EN; | |
394 | } else if (netdev->flags & IFF_ALLMULTI) { | |
395 | mac_ctrl_data |= MAC_CTRL_MC_ALL_EN; | |
396 | mac_ctrl_data &= ~MAC_CTRL_PROMIS_EN; | |
397 | } else { | |
398 | mac_ctrl_data &= ~(MAC_CTRL_PROMIS_EN | MAC_CTRL_MC_ALL_EN); | |
399 | } | |
400 | ||
401 | AT_WRITE_REG(hw, REG_MAC_CTRL, mac_ctrl_data); | |
402 | ||
403 | /* clear the old settings from the multicast hash table */ | |
404 | AT_WRITE_REG(hw, REG_RX_HASH_TABLE, 0); | |
405 | AT_WRITE_REG_ARRAY(hw, REG_RX_HASH_TABLE, 1, 0); | |
406 | ||
407 | /* comoute mc addresses' hash value ,and put it into hash table */ | |
22bedad3 JP |
408 | netdev_for_each_mc_addr(ha, netdev) { |
409 | hash_value = atl1c_hash_mc_addr(hw, ha->addr); | |
43250ddd JY |
410 | atl1c_hash_set(hw, hash_value); |
411 | } | |
412 | } | |
413 | ||
46facce9 JP |
414 | static void __atl1c_vlan_mode(u32 features, u32 *mac_ctrl_data) |
415 | { | |
416 | if (features & NETIF_F_HW_VLAN_RX) { | |
417 | /* enable VLAN tag insert/strip */ | |
418 | *mac_ctrl_data |= MAC_CTRL_RMV_VLAN; | |
419 | } else { | |
420 | /* disable VLAN tag insert/strip */ | |
421 | *mac_ctrl_data &= ~MAC_CTRL_RMV_VLAN; | |
422 | } | |
423 | } | |
424 | ||
425 | static void atl1c_vlan_mode(struct net_device *netdev, u32 features) | |
43250ddd JY |
426 | { |
427 | struct atl1c_adapter *adapter = netdev_priv(netdev); | |
428 | struct pci_dev *pdev = adapter->pdev; | |
429 | u32 mac_ctrl_data = 0; | |
430 | ||
431 | if (netif_msg_pktdata(adapter)) | |
46facce9 | 432 | dev_dbg(&pdev->dev, "atl1c_vlan_mode\n"); |
43250ddd JY |
433 | |
434 | atl1c_irq_disable(adapter); | |
43250ddd | 435 | AT_READ_REG(&adapter->hw, REG_MAC_CTRL, &mac_ctrl_data); |
46facce9 | 436 | __atl1c_vlan_mode(features, &mac_ctrl_data); |
43250ddd JY |
437 | AT_WRITE_REG(&adapter->hw, REG_MAC_CTRL, mac_ctrl_data); |
438 | atl1c_irq_enable(adapter); | |
439 | } | |
440 | ||
441 | static void atl1c_restore_vlan(struct atl1c_adapter *adapter) | |
442 | { | |
443 | struct pci_dev *pdev = adapter->pdev; | |
444 | ||
445 | if (netif_msg_pktdata(adapter)) | |
46facce9 JP |
446 | dev_dbg(&pdev->dev, "atl1c_restore_vlan\n"); |
447 | atl1c_vlan_mode(adapter->netdev, adapter->netdev->features); | |
43250ddd | 448 | } |
46facce9 | 449 | |
43250ddd JY |
450 | /* |
451 | * atl1c_set_mac - Change the Ethernet Address of the NIC | |
452 | * @netdev: network interface device structure | |
453 | * @p: pointer to an address structure | |
454 | * | |
455 | * Returns 0 on success, negative on failure | |
456 | */ | |
457 | static int atl1c_set_mac_addr(struct net_device *netdev, void *p) | |
458 | { | |
459 | struct atl1c_adapter *adapter = netdev_priv(netdev); | |
460 | struct sockaddr *addr = p; | |
461 | ||
462 | if (!is_valid_ether_addr(addr->sa_data)) | |
463 | return -EADDRNOTAVAIL; | |
464 | ||
465 | if (netif_running(netdev)) | |
466 | return -EBUSY; | |
467 | ||
468 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
469 | memcpy(adapter->hw.mac_addr, addr->sa_data, netdev->addr_len); | |
470 | ||
471 | atl1c_hw_set_mac_addr(&adapter->hw); | |
472 | ||
473 | return 0; | |
474 | } | |
475 | ||
476 | static void atl1c_set_rxbufsize(struct atl1c_adapter *adapter, | |
477 | struct net_device *dev) | |
478 | { | |
479 | int mtu = dev->mtu; | |
480 | ||
481 | adapter->rx_buffer_len = mtu > AT_RX_BUF_SIZE ? | |
482 | roundup(mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN, 8) : AT_RX_BUF_SIZE; | |
483 | } | |
782d640a MM |
484 | |
485 | static u32 atl1c_fix_features(struct net_device *netdev, u32 features) | |
486 | { | |
46facce9 JP |
487 | /* |
488 | * Since there is no support for separate rx/tx vlan accel | |
489 | * enable/disable make sure tx flag is always in same state as rx. | |
490 | */ | |
491 | if (features & NETIF_F_HW_VLAN_RX) | |
492 | features |= NETIF_F_HW_VLAN_TX; | |
493 | else | |
494 | features &= ~NETIF_F_HW_VLAN_TX; | |
495 | ||
782d640a MM |
496 | if (netdev->mtu > MAX_TSO_FRAME_SIZE) |
497 | features &= ~(NETIF_F_TSO | NETIF_F_TSO6); | |
498 | ||
499 | return features; | |
500 | } | |
501 | ||
46facce9 JP |
502 | static int atl1c_set_features(struct net_device *netdev, u32 features) |
503 | { | |
504 | u32 changed = netdev->features ^ features; | |
505 | ||
506 | if (changed & NETIF_F_HW_VLAN_RX) | |
507 | atl1c_vlan_mode(netdev, features); | |
508 | ||
509 | return 0; | |
510 | } | |
511 | ||
43250ddd JY |
512 | /* |
513 | * atl1c_change_mtu - Change the Maximum Transfer Unit | |
514 | * @netdev: network interface device structure | |
515 | * @new_mtu: new value for maximum frame size | |
516 | * | |
517 | * Returns 0 on success, negative on failure | |
518 | */ | |
519 | static int atl1c_change_mtu(struct net_device *netdev, int new_mtu) | |
520 | { | |
521 | struct atl1c_adapter *adapter = netdev_priv(netdev); | |
522 | int old_mtu = netdev->mtu; | |
523 | int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN; | |
524 | ||
525 | if ((max_frame < ETH_ZLEN + ETH_FCS_LEN) || | |
526 | (max_frame > MAX_JUMBO_FRAME_SIZE)) { | |
527 | if (netif_msg_link(adapter)) | |
528 | dev_warn(&adapter->pdev->dev, "invalid MTU setting\n"); | |
529 | return -EINVAL; | |
530 | } | |
531 | /* set MTU */ | |
532 | if (old_mtu != new_mtu && netif_running(netdev)) { | |
533 | while (test_and_set_bit(__AT_RESETTING, &adapter->flags)) | |
534 | msleep(1); | |
535 | netdev->mtu = new_mtu; | |
536 | adapter->hw.max_frame_size = new_mtu; | |
537 | atl1c_set_rxbufsize(adapter, netdev); | |
538 | atl1c_down(adapter); | |
782d640a | 539 | netdev_update_features(netdev); |
43250ddd JY |
540 | atl1c_up(adapter); |
541 | clear_bit(__AT_RESETTING, &adapter->flags); | |
542 | if (adapter->hw.ctrl_flags & ATL1C_FPGA_VERSION) { | |
543 | u32 phy_data; | |
544 | ||
545 | AT_READ_REG(&adapter->hw, 0x1414, &phy_data); | |
546 | phy_data |= 0x10000000; | |
547 | AT_WRITE_REG(&adapter->hw, 0x1414, phy_data); | |
548 | } | |
549 | ||
550 | } | |
551 | return 0; | |
552 | } | |
553 | ||
554 | /* | |
555 | * caller should hold mdio_lock | |
556 | */ | |
557 | static int atl1c_mdio_read(struct net_device *netdev, int phy_id, int reg_num) | |
558 | { | |
559 | struct atl1c_adapter *adapter = netdev_priv(netdev); | |
560 | u16 result; | |
561 | ||
562 | atl1c_read_phy_reg(&adapter->hw, reg_num & MDIO_REG_ADDR_MASK, &result); | |
563 | return result; | |
564 | } | |
565 | ||
566 | static void atl1c_mdio_write(struct net_device *netdev, int phy_id, | |
567 | int reg_num, int val) | |
568 | { | |
569 | struct atl1c_adapter *adapter = netdev_priv(netdev); | |
570 | ||
571 | atl1c_write_phy_reg(&adapter->hw, reg_num & MDIO_REG_ADDR_MASK, val); | |
572 | } | |
573 | ||
574 | /* | |
575 | * atl1c_mii_ioctl - | |
576 | * @netdev: | |
577 | * @ifreq: | |
578 | * @cmd: | |
579 | */ | |
580 | static int atl1c_mii_ioctl(struct net_device *netdev, | |
581 | struct ifreq *ifr, int cmd) | |
582 | { | |
583 | struct atl1c_adapter *adapter = netdev_priv(netdev); | |
584 | struct pci_dev *pdev = adapter->pdev; | |
585 | struct mii_ioctl_data *data = if_mii(ifr); | |
586 | unsigned long flags; | |
587 | int retval = 0; | |
588 | ||
589 | if (!netif_running(netdev)) | |
590 | return -EINVAL; | |
591 | ||
592 | spin_lock_irqsave(&adapter->mdio_lock, flags); | |
593 | switch (cmd) { | |
594 | case SIOCGMIIPHY: | |
595 | data->phy_id = 0; | |
596 | break; | |
597 | ||
598 | case SIOCGMIIREG: | |
43250ddd JY |
599 | if (atl1c_read_phy_reg(&adapter->hw, data->reg_num & 0x1F, |
600 | &data->val_out)) { | |
601 | retval = -EIO; | |
602 | goto out; | |
603 | } | |
604 | break; | |
605 | ||
606 | case SIOCSMIIREG: | |
43250ddd JY |
607 | if (data->reg_num & ~(0x1F)) { |
608 | retval = -EFAULT; | |
609 | goto out; | |
610 | } | |
611 | ||
612 | dev_dbg(&pdev->dev, "<atl1c_mii_ioctl> write %x %x", | |
613 | data->reg_num, data->val_in); | |
614 | if (atl1c_write_phy_reg(&adapter->hw, | |
615 | data->reg_num, data->val_in)) { | |
616 | retval = -EIO; | |
617 | goto out; | |
618 | } | |
619 | break; | |
620 | ||
621 | default: | |
622 | retval = -EOPNOTSUPP; | |
623 | break; | |
624 | } | |
625 | out: | |
626 | spin_unlock_irqrestore(&adapter->mdio_lock, flags); | |
627 | return retval; | |
628 | } | |
629 | ||
630 | /* | |
631 | * atl1c_ioctl - | |
632 | * @netdev: | |
633 | * @ifreq: | |
634 | * @cmd: | |
635 | */ | |
636 | static int atl1c_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) | |
637 | { | |
638 | switch (cmd) { | |
639 | case SIOCGMIIPHY: | |
640 | case SIOCGMIIREG: | |
641 | case SIOCSMIIREG: | |
642 | return atl1c_mii_ioctl(netdev, ifr, cmd); | |
643 | default: | |
644 | return -EOPNOTSUPP; | |
645 | } | |
646 | } | |
647 | ||
648 | /* | |
649 | * atl1c_alloc_queues - Allocate memory for all rings | |
650 | * @adapter: board private structure to initialize | |
651 | * | |
652 | */ | |
653 | static int __devinit atl1c_alloc_queues(struct atl1c_adapter *adapter) | |
654 | { | |
655 | return 0; | |
656 | } | |
657 | ||
658 | static void atl1c_set_mac_type(struct atl1c_hw *hw) | |
659 | { | |
660 | switch (hw->device_id) { | |
661 | case PCI_DEVICE_ID_ATTANSIC_L2C: | |
662 | hw->nic_type = athr_l2c; | |
663 | break; | |
43250ddd JY |
664 | case PCI_DEVICE_ID_ATTANSIC_L1C: |
665 | hw->nic_type = athr_l1c; | |
666 | break; | |
496c185c LR |
667 | case PCI_DEVICE_ID_ATHEROS_L2C_B: |
668 | hw->nic_type = athr_l2c_b; | |
669 | break; | |
670 | case PCI_DEVICE_ID_ATHEROS_L2C_B2: | |
671 | hw->nic_type = athr_l2c_b2; | |
672 | break; | |
673 | case PCI_DEVICE_ID_ATHEROS_L1D: | |
674 | hw->nic_type = athr_l1d; | |
675 | break; | |
8f574b35 JY |
676 | case PCI_DEVICE_ID_ATHEROS_L1D_2_0: |
677 | hw->nic_type = athr_l1d_2; | |
678 | break; | |
43250ddd JY |
679 | default: |
680 | break; | |
681 | } | |
682 | } | |
683 | ||
684 | static int atl1c_setup_mac_funcs(struct atl1c_hw *hw) | |
685 | { | |
686 | u32 phy_status_data; | |
687 | u32 link_ctrl_data; | |
688 | ||
689 | atl1c_set_mac_type(hw); | |
690 | AT_READ_REG(hw, REG_PHY_STATUS, &phy_status_data); | |
691 | AT_READ_REG(hw, REG_LINK_CTRL, &link_ctrl_data); | |
692 | ||
8f574b35 | 693 | hw->ctrl_flags = ATL1C_INTR_MODRT_ENABLE | |
43250ddd JY |
694 | ATL1C_TXQ_MODE_ENHANCE; |
695 | if (link_ctrl_data & LINK_CTRL_L0S_EN) | |
696 | hw->ctrl_flags |= ATL1C_ASPM_L0S_SUPPORT; | |
697 | if (link_ctrl_data & LINK_CTRL_L1_EN) | |
698 | hw->ctrl_flags |= ATL1C_ASPM_L1_SUPPORT; | |
496c185c LR |
699 | if (link_ctrl_data & LINK_CTRL_EXT_SYNC) |
700 | hw->ctrl_flags |= ATL1C_LINK_EXT_SYNC; | |
8f574b35 | 701 | hw->ctrl_flags |= ATL1C_ASPM_CTRL_MON; |
43250ddd | 702 | |
496c185c | 703 | if (hw->nic_type == athr_l1c || |
8f574b35 JY |
704 | hw->nic_type == athr_l1d || |
705 | hw->nic_type == athr_l1d_2) | |
496c185c | 706 | hw->link_cap_flags |= ATL1C_LINK_CAP_1000M; |
43250ddd JY |
707 | return 0; |
708 | } | |
709 | /* | |
710 | * atl1c_sw_init - Initialize general software structures (struct atl1c_adapter) | |
711 | * @adapter: board private structure to initialize | |
712 | * | |
713 | * atl1c_sw_init initializes the Adapter private data structure. | |
714 | * Fields are initialized based on PCI device information and | |
715 | * OS network device settings (MTU size). | |
716 | */ | |
717 | static int __devinit atl1c_sw_init(struct atl1c_adapter *adapter) | |
718 | { | |
719 | struct atl1c_hw *hw = &adapter->hw; | |
720 | struct pci_dev *pdev = adapter->pdev; | |
8f574b35 JY |
721 | u32 revision; |
722 | ||
43250ddd JY |
723 | |
724 | adapter->wol = 0; | |
762e3023 | 725 | device_set_wakeup_enable(&pdev->dev, false); |
43250ddd JY |
726 | adapter->link_speed = SPEED_0; |
727 | adapter->link_duplex = FULL_DUPLEX; | |
728 | adapter->num_rx_queues = AT_DEF_RECEIVE_QUEUE; | |
729 | adapter->tpd_ring[0].count = 1024; | |
730 | adapter->rfd_ring[0].count = 512; | |
731 | ||
732 | hw->vendor_id = pdev->vendor; | |
733 | hw->device_id = pdev->device; | |
734 | hw->subsystem_vendor_id = pdev->subsystem_vendor; | |
735 | hw->subsystem_id = pdev->subsystem_device; | |
8f574b35 JY |
736 | AT_READ_REG(hw, PCI_CLASS_REVISION, &revision); |
737 | hw->revision_id = revision & 0xFF; | |
43250ddd JY |
738 | /* before link up, we assume hibernate is true */ |
739 | hw->hibernate = true; | |
740 | hw->media_type = MEDIA_TYPE_AUTO_SENSOR; | |
741 | if (atl1c_setup_mac_funcs(hw) != 0) { | |
742 | dev_err(&pdev->dev, "set mac function pointers failed\n"); | |
743 | return -1; | |
744 | } | |
745 | hw->intr_mask = IMR_NORMAL_MASK; | |
746 | hw->phy_configured = false; | |
747 | hw->preamble_len = 7; | |
748 | hw->max_frame_size = adapter->netdev->mtu; | |
749 | if (adapter->num_rx_queues < 2) { | |
750 | hw->rss_type = atl1c_rss_disable; | |
751 | hw->rss_mode = atl1c_rss_mode_disable; | |
752 | } else { | |
753 | hw->rss_type = atl1c_rss_ipv4; | |
754 | hw->rss_mode = atl1c_rss_mul_que_mul_int; | |
755 | hw->rss_hash_bits = 16; | |
756 | } | |
757 | hw->autoneg_advertised = ADVERTISED_Autoneg; | |
758 | hw->indirect_tab = 0xE4E4E4E4; | |
759 | hw->base_cpu = 0; | |
760 | ||
761 | hw->ict = 50000; /* 100ms */ | |
762 | hw->smb_timer = 200000; /* 400ms */ | |
763 | hw->cmb_tpd = 4; | |
764 | hw->cmb_tx_timer = 1; /* 2 us */ | |
765 | hw->rx_imt = 200; | |
766 | hw->tx_imt = 1000; | |
767 | ||
768 | hw->tpd_burst = 5; | |
769 | hw->rfd_burst = 8; | |
770 | hw->dma_order = atl1c_dma_ord_out; | |
771 | hw->dmar_block = atl1c_dma_req_1024; | |
772 | hw->dmaw_block = atl1c_dma_req_1024; | |
773 | hw->dmar_dly_cnt = 15; | |
774 | hw->dmaw_dly_cnt = 4; | |
775 | ||
776 | if (atl1c_alloc_queues(adapter)) { | |
777 | dev_err(&pdev->dev, "Unable to allocate memory for queues\n"); | |
778 | return -ENOMEM; | |
779 | } | |
780 | /* TODO */ | |
781 | atl1c_set_rxbufsize(adapter, adapter->netdev); | |
782 | atomic_set(&adapter->irq_sem, 1); | |
783 | spin_lock_init(&adapter->mdio_lock); | |
784 | spin_lock_init(&adapter->tx_lock); | |
785 | set_bit(__AT_DOWN, &adapter->flags); | |
786 | ||
787 | return 0; | |
788 | } | |
789 | ||
c6060be4 JY |
790 | static inline void atl1c_clean_buffer(struct pci_dev *pdev, |
791 | struct atl1c_buffer *buffer_info, int in_irq) | |
792 | { | |
4b45e342 | 793 | u16 pci_driection; |
c6060be4 JY |
794 | if (buffer_info->flags & ATL1C_BUFFER_FREE) |
795 | return; | |
796 | if (buffer_info->dma) { | |
4b45e342 JY |
797 | if (buffer_info->flags & ATL1C_PCIMAP_FROMDEVICE) |
798 | pci_driection = PCI_DMA_FROMDEVICE; | |
799 | else | |
800 | pci_driection = PCI_DMA_TODEVICE; | |
801 | ||
c6060be4 JY |
802 | if (buffer_info->flags & ATL1C_PCIMAP_SINGLE) |
803 | pci_unmap_single(pdev, buffer_info->dma, | |
4b45e342 | 804 | buffer_info->length, pci_driection); |
c6060be4 JY |
805 | else if (buffer_info->flags & ATL1C_PCIMAP_PAGE) |
806 | pci_unmap_page(pdev, buffer_info->dma, | |
4b45e342 | 807 | buffer_info->length, pci_driection); |
c6060be4 JY |
808 | } |
809 | if (buffer_info->skb) { | |
810 | if (in_irq) | |
811 | dev_kfree_skb_irq(buffer_info->skb); | |
812 | else | |
813 | dev_kfree_skb(buffer_info->skb); | |
814 | } | |
815 | buffer_info->dma = 0; | |
816 | buffer_info->skb = NULL; | |
817 | ATL1C_SET_BUFFER_STATE(buffer_info, ATL1C_BUFFER_FREE); | |
818 | } | |
43250ddd JY |
819 | /* |
820 | * atl1c_clean_tx_ring - Free Tx-skb | |
821 | * @adapter: board private structure | |
822 | */ | |
823 | static void atl1c_clean_tx_ring(struct atl1c_adapter *adapter, | |
824 | enum atl1c_trans_queue type) | |
825 | { | |
826 | struct atl1c_tpd_ring *tpd_ring = &adapter->tpd_ring[type]; | |
827 | struct atl1c_buffer *buffer_info; | |
828 | struct pci_dev *pdev = adapter->pdev; | |
829 | u16 index, ring_count; | |
830 | ||
831 | ring_count = tpd_ring->count; | |
832 | for (index = 0; index < ring_count; index++) { | |
833 | buffer_info = &tpd_ring->buffer_info[index]; | |
c6060be4 | 834 | atl1c_clean_buffer(pdev, buffer_info, 0); |
43250ddd JY |
835 | } |
836 | ||
837 | /* Zero out Tx-buffers */ | |
838 | memset(tpd_ring->desc, 0, sizeof(struct atl1c_tpd_desc) * | |
c6060be4 | 839 | ring_count); |
43250ddd JY |
840 | atomic_set(&tpd_ring->next_to_clean, 0); |
841 | tpd_ring->next_to_use = 0; | |
842 | } | |
843 | ||
844 | /* | |
845 | * atl1c_clean_rx_ring - Free rx-reservation skbs | |
846 | * @adapter: board private structure | |
847 | */ | |
848 | static void atl1c_clean_rx_ring(struct atl1c_adapter *adapter) | |
849 | { | |
850 | struct atl1c_rfd_ring *rfd_ring = adapter->rfd_ring; | |
851 | struct atl1c_rrd_ring *rrd_ring = adapter->rrd_ring; | |
852 | struct atl1c_buffer *buffer_info; | |
853 | struct pci_dev *pdev = adapter->pdev; | |
854 | int i, j; | |
855 | ||
856 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
857 | for (j = 0; j < rfd_ring[i].count; j++) { | |
858 | buffer_info = &rfd_ring[i].buffer_info[j]; | |
c6060be4 | 859 | atl1c_clean_buffer(pdev, buffer_info, 0); |
43250ddd JY |
860 | } |
861 | /* zero out the descriptor ring */ | |
862 | memset(rfd_ring[i].desc, 0, rfd_ring[i].size); | |
863 | rfd_ring[i].next_to_clean = 0; | |
864 | rfd_ring[i].next_to_use = 0; | |
865 | rrd_ring[i].next_to_use = 0; | |
866 | rrd_ring[i].next_to_clean = 0; | |
867 | } | |
868 | } | |
869 | ||
870 | /* | |
871 | * Read / Write Ptr Initialize: | |
872 | */ | |
873 | static void atl1c_init_ring_ptrs(struct atl1c_adapter *adapter) | |
874 | { | |
875 | struct atl1c_tpd_ring *tpd_ring = adapter->tpd_ring; | |
876 | struct atl1c_rfd_ring *rfd_ring = adapter->rfd_ring; | |
877 | struct atl1c_rrd_ring *rrd_ring = adapter->rrd_ring; | |
878 | struct atl1c_buffer *buffer_info; | |
879 | int i, j; | |
880 | ||
881 | for (i = 0; i < AT_MAX_TRANSMIT_QUEUE; i++) { | |
882 | tpd_ring[i].next_to_use = 0; | |
883 | atomic_set(&tpd_ring[i].next_to_clean, 0); | |
884 | buffer_info = tpd_ring[i].buffer_info; | |
885 | for (j = 0; j < tpd_ring->count; j++) | |
c6060be4 JY |
886 | ATL1C_SET_BUFFER_STATE(&buffer_info[i], |
887 | ATL1C_BUFFER_FREE); | |
43250ddd JY |
888 | } |
889 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
890 | rfd_ring[i].next_to_use = 0; | |
891 | rfd_ring[i].next_to_clean = 0; | |
892 | rrd_ring[i].next_to_use = 0; | |
893 | rrd_ring[i].next_to_clean = 0; | |
894 | for (j = 0; j < rfd_ring[i].count; j++) { | |
895 | buffer_info = &rfd_ring[i].buffer_info[j]; | |
c6060be4 | 896 | ATL1C_SET_BUFFER_STATE(buffer_info, ATL1C_BUFFER_FREE); |
43250ddd JY |
897 | } |
898 | } | |
899 | } | |
900 | ||
901 | /* | |
902 | * atl1c_free_ring_resources - Free Tx / RX descriptor Resources | |
903 | * @adapter: board private structure | |
904 | * | |
905 | * Free all transmit software resources | |
906 | */ | |
907 | static void atl1c_free_ring_resources(struct atl1c_adapter *adapter) | |
908 | { | |
909 | struct pci_dev *pdev = adapter->pdev; | |
910 | ||
911 | pci_free_consistent(pdev, adapter->ring_header.size, | |
912 | adapter->ring_header.desc, | |
913 | adapter->ring_header.dma); | |
914 | adapter->ring_header.desc = NULL; | |
915 | ||
916 | /* Note: just free tdp_ring.buffer_info, | |
917 | * it contain rfd_ring.buffer_info, do not double free */ | |
918 | if (adapter->tpd_ring[0].buffer_info) { | |
919 | kfree(adapter->tpd_ring[0].buffer_info); | |
920 | adapter->tpd_ring[0].buffer_info = NULL; | |
921 | } | |
922 | } | |
923 | ||
924 | /* | |
925 | * atl1c_setup_mem_resources - allocate Tx / RX descriptor resources | |
926 | * @adapter: board private structure | |
927 | * | |
928 | * Return 0 on success, negative on failure | |
929 | */ | |
930 | static int atl1c_setup_ring_resources(struct atl1c_adapter *adapter) | |
931 | { | |
932 | struct pci_dev *pdev = adapter->pdev; | |
933 | struct atl1c_tpd_ring *tpd_ring = adapter->tpd_ring; | |
934 | struct atl1c_rfd_ring *rfd_ring = adapter->rfd_ring; | |
935 | struct atl1c_rrd_ring *rrd_ring = adapter->rrd_ring; | |
936 | struct atl1c_ring_header *ring_header = &adapter->ring_header; | |
937 | int num_rx_queues = adapter->num_rx_queues; | |
938 | int size; | |
939 | int i; | |
940 | int count = 0; | |
941 | int rx_desc_count = 0; | |
942 | u32 offset = 0; | |
943 | ||
944 | rrd_ring[0].count = rfd_ring[0].count; | |
945 | for (i = 1; i < AT_MAX_TRANSMIT_QUEUE; i++) | |
946 | tpd_ring[i].count = tpd_ring[0].count; | |
947 | ||
948 | for (i = 1; i < adapter->num_rx_queues; i++) | |
949 | rfd_ring[i].count = rrd_ring[i].count = rfd_ring[0].count; | |
950 | ||
951 | /* 2 tpd queue, one high priority queue, | |
952 | * another normal priority queue */ | |
953 | size = sizeof(struct atl1c_buffer) * (tpd_ring->count * 2 + | |
954 | rfd_ring->count * num_rx_queues); | |
955 | tpd_ring->buffer_info = kzalloc(size, GFP_KERNEL); | |
956 | if (unlikely(!tpd_ring->buffer_info)) { | |
957 | dev_err(&pdev->dev, "kzalloc failed, size = %d\n", | |
958 | size); | |
959 | goto err_nomem; | |
960 | } | |
961 | for (i = 0; i < AT_MAX_TRANSMIT_QUEUE; i++) { | |
962 | tpd_ring[i].buffer_info = | |
963 | (struct atl1c_buffer *) (tpd_ring->buffer_info + count); | |
964 | count += tpd_ring[i].count; | |
965 | } | |
966 | ||
967 | for (i = 0; i < num_rx_queues; i++) { | |
968 | rfd_ring[i].buffer_info = | |
969 | (struct atl1c_buffer *) (tpd_ring->buffer_info + count); | |
970 | count += rfd_ring[i].count; | |
971 | rx_desc_count += rfd_ring[i].count; | |
972 | } | |
973 | /* | |
974 | * real ring DMA buffer | |
975 | * each ring/block may need up to 8 bytes for alignment, hence the | |
976 | * additional bytes tacked onto the end. | |
977 | */ | |
978 | ring_header->size = size = | |
979 | sizeof(struct atl1c_tpd_desc) * tpd_ring->count * 2 + | |
980 | sizeof(struct atl1c_rx_free_desc) * rx_desc_count + | |
981 | sizeof(struct atl1c_recv_ret_status) * rx_desc_count + | |
982 | sizeof(struct atl1c_hw_stats) + | |
983 | 8 * 4 + 8 * 2 * num_rx_queues; | |
984 | ||
985 | ring_header->desc = pci_alloc_consistent(pdev, ring_header->size, | |
986 | &ring_header->dma); | |
987 | if (unlikely(!ring_header->desc)) { | |
988 | dev_err(&pdev->dev, "pci_alloc_consistend failed\n"); | |
989 | goto err_nomem; | |
990 | } | |
991 | memset(ring_header->desc, 0, ring_header->size); | |
992 | /* init TPD ring */ | |
993 | ||
994 | tpd_ring[0].dma = roundup(ring_header->dma, 8); | |
995 | offset = tpd_ring[0].dma - ring_header->dma; | |
996 | for (i = 0; i < AT_MAX_TRANSMIT_QUEUE; i++) { | |
997 | tpd_ring[i].dma = ring_header->dma + offset; | |
998 | tpd_ring[i].desc = (u8 *) ring_header->desc + offset; | |
999 | tpd_ring[i].size = | |
1000 | sizeof(struct atl1c_tpd_desc) * tpd_ring[i].count; | |
1001 | offset += roundup(tpd_ring[i].size, 8); | |
1002 | } | |
1003 | /* init RFD ring */ | |
1004 | for (i = 0; i < num_rx_queues; i++) { | |
1005 | rfd_ring[i].dma = ring_header->dma + offset; | |
1006 | rfd_ring[i].desc = (u8 *) ring_header->desc + offset; | |
1007 | rfd_ring[i].size = sizeof(struct atl1c_rx_free_desc) * | |
1008 | rfd_ring[i].count; | |
1009 | offset += roundup(rfd_ring[i].size, 8); | |
1010 | } | |
1011 | ||
1012 | /* init RRD ring */ | |
1013 | for (i = 0; i < num_rx_queues; i++) { | |
1014 | rrd_ring[i].dma = ring_header->dma + offset; | |
1015 | rrd_ring[i].desc = (u8 *) ring_header->desc + offset; | |
1016 | rrd_ring[i].size = sizeof(struct atl1c_recv_ret_status) * | |
1017 | rrd_ring[i].count; | |
1018 | offset += roundup(rrd_ring[i].size, 8); | |
1019 | } | |
1020 | ||
1021 | adapter->smb.dma = ring_header->dma + offset; | |
1022 | adapter->smb.smb = (u8 *)ring_header->desc + offset; | |
1023 | return 0; | |
1024 | ||
1025 | err_nomem: | |
1026 | kfree(tpd_ring->buffer_info); | |
1027 | return -ENOMEM; | |
1028 | } | |
1029 | ||
1030 | static void atl1c_configure_des_ring(struct atl1c_adapter *adapter) | |
1031 | { | |
1032 | struct atl1c_hw *hw = &adapter->hw; | |
1033 | struct atl1c_rfd_ring *rfd_ring = (struct atl1c_rfd_ring *) | |
1034 | adapter->rfd_ring; | |
1035 | struct atl1c_rrd_ring *rrd_ring = (struct atl1c_rrd_ring *) | |
1036 | adapter->rrd_ring; | |
1037 | struct atl1c_tpd_ring *tpd_ring = (struct atl1c_tpd_ring *) | |
1038 | adapter->tpd_ring; | |
1039 | struct atl1c_cmb *cmb = (struct atl1c_cmb *) &adapter->cmb; | |
1040 | struct atl1c_smb *smb = (struct atl1c_smb *) &adapter->smb; | |
1041 | int i; | |
8f574b35 | 1042 | u32 data; |
43250ddd JY |
1043 | |
1044 | /* TPD */ | |
1045 | AT_WRITE_REG(hw, REG_TX_BASE_ADDR_HI, | |
1046 | (u32)((tpd_ring[atl1c_trans_normal].dma & | |
1047 | AT_DMA_HI_ADDR_MASK) >> 32)); | |
1048 | /* just enable normal priority TX queue */ | |
1049 | AT_WRITE_REG(hw, REG_NTPD_HEAD_ADDR_LO, | |
1050 | (u32)(tpd_ring[atl1c_trans_normal].dma & | |
1051 | AT_DMA_LO_ADDR_MASK)); | |
1052 | AT_WRITE_REG(hw, REG_HTPD_HEAD_ADDR_LO, | |
1053 | (u32)(tpd_ring[atl1c_trans_high].dma & | |
1054 | AT_DMA_LO_ADDR_MASK)); | |
1055 | AT_WRITE_REG(hw, REG_TPD_RING_SIZE, | |
1056 | (u32)(tpd_ring[0].count & TPD_RING_SIZE_MASK)); | |
1057 | ||
1058 | ||
1059 | /* RFD */ | |
1060 | AT_WRITE_REG(hw, REG_RX_BASE_ADDR_HI, | |
1061 | (u32)((rfd_ring[0].dma & AT_DMA_HI_ADDR_MASK) >> 32)); | |
1062 | for (i = 0; i < adapter->num_rx_queues; i++) | |
1063 | AT_WRITE_REG(hw, atl1c_rfd_addr_lo_regs[i], | |
1064 | (u32)(rfd_ring[i].dma & AT_DMA_LO_ADDR_MASK)); | |
1065 | ||
1066 | AT_WRITE_REG(hw, REG_RFD_RING_SIZE, | |
1067 | rfd_ring[0].count & RFD_RING_SIZE_MASK); | |
1068 | AT_WRITE_REG(hw, REG_RX_BUF_SIZE, | |
1069 | adapter->rx_buffer_len & RX_BUF_SIZE_MASK); | |
1070 | ||
1071 | /* RRD */ | |
1072 | for (i = 0; i < adapter->num_rx_queues; i++) | |
1073 | AT_WRITE_REG(hw, atl1c_rrd_addr_lo_regs[i], | |
1074 | (u32)(rrd_ring[i].dma & AT_DMA_LO_ADDR_MASK)); | |
1075 | AT_WRITE_REG(hw, REG_RRD_RING_SIZE, | |
1076 | (rrd_ring[0].count & RRD_RING_SIZE_MASK)); | |
1077 | ||
1078 | /* CMB */ | |
1079 | AT_WRITE_REG(hw, REG_CMB_BASE_ADDR_LO, cmb->dma & AT_DMA_LO_ADDR_MASK); | |
1080 | ||
1081 | /* SMB */ | |
1082 | AT_WRITE_REG(hw, REG_SMB_BASE_ADDR_HI, | |
1083 | (u32)((smb->dma & AT_DMA_HI_ADDR_MASK) >> 32)); | |
1084 | AT_WRITE_REG(hw, REG_SMB_BASE_ADDR_LO, | |
1085 | (u32)(smb->dma & AT_DMA_LO_ADDR_MASK)); | |
8f574b35 JY |
1086 | if (hw->nic_type == athr_l2c_b) { |
1087 | AT_WRITE_REG(hw, REG_SRAM_RXF_LEN, 0x02a0L); | |
1088 | AT_WRITE_REG(hw, REG_SRAM_TXF_LEN, 0x0100L); | |
1089 | AT_WRITE_REG(hw, REG_SRAM_RXF_ADDR, 0x029f0000L); | |
1090 | AT_WRITE_REG(hw, REG_SRAM_RFD0_INFO, 0x02bf02a0L); | |
1091 | AT_WRITE_REG(hw, REG_SRAM_TXF_ADDR, 0x03bf02c0L); | |
1092 | AT_WRITE_REG(hw, REG_SRAM_TRD_ADDR, 0x03df03c0L); | |
1093 | AT_WRITE_REG(hw, REG_TXF_WATER_MARK, 0); /* TX watermark, to enter l1 state.*/ | |
1094 | AT_WRITE_REG(hw, REG_RXD_DMA_CTRL, 0); /* RXD threshold.*/ | |
1095 | } | |
1096 | if (hw->nic_type == athr_l2c_b || hw->nic_type == athr_l1d_2) { | |
1097 | /* Power Saving for L2c_B */ | |
1098 | AT_READ_REG(hw, REG_SERDES_LOCK, &data); | |
1099 | data |= SERDES_MAC_CLK_SLOWDOWN; | |
1100 | data |= SERDES_PYH_CLK_SLOWDOWN; | |
1101 | AT_WRITE_REG(hw, REG_SERDES_LOCK, data); | |
1102 | } | |
43250ddd JY |
1103 | /* Load all of base address above */ |
1104 | AT_WRITE_REG(hw, REG_LOAD_PTR, 1); | |
1105 | } | |
1106 | ||
1107 | static void atl1c_configure_tx(struct atl1c_adapter *adapter) | |
1108 | { | |
1109 | struct atl1c_hw *hw = &adapter->hw; | |
1110 | u32 dev_ctrl_data; | |
1111 | u32 max_pay_load; | |
1112 | u16 tx_offload_thresh; | |
1113 | u32 txq_ctrl_data; | |
8f574b35 | 1114 | u32 max_pay_load_data; |
43250ddd | 1115 | |
43250ddd JY |
1116 | tx_offload_thresh = MAX_TX_OFFLOAD_THRESH; |
1117 | AT_WRITE_REG(hw, REG_TX_TSO_OFFLOAD_THRESH, | |
1118 | (tx_offload_thresh >> 3) & TX_TSO_OFFLOAD_THRESH_MASK); | |
1119 | AT_READ_REG(hw, REG_DEVICE_CTRL, &dev_ctrl_data); | |
1120 | max_pay_load = (dev_ctrl_data >> DEVICE_CTRL_MAX_PAYLOAD_SHIFT) & | |
1121 | DEVICE_CTRL_MAX_PAYLOAD_MASK; | |
81b504b8 | 1122 | hw->dmaw_block = min_t(u32, max_pay_load, hw->dmaw_block); |
43250ddd JY |
1123 | max_pay_load = (dev_ctrl_data >> DEVICE_CTRL_MAX_RREQ_SZ_SHIFT) & |
1124 | DEVICE_CTRL_MAX_RREQ_SZ_MASK; | |
81b504b8 | 1125 | hw->dmar_block = min_t(u32, max_pay_load, hw->dmar_block); |
43250ddd JY |
1126 | |
1127 | txq_ctrl_data = (hw->tpd_burst & TXQ_NUM_TPD_BURST_MASK) << | |
1128 | TXQ_NUM_TPD_BURST_SHIFT; | |
1129 | if (hw->ctrl_flags & ATL1C_TXQ_MODE_ENHANCE) | |
1130 | txq_ctrl_data |= TXQ_CTRL_ENH_MODE; | |
8f574b35 | 1131 | max_pay_load_data = (atl1c_pay_load_size[hw->dmar_block] & |
43250ddd | 1132 | TXQ_TXF_BURST_NUM_MASK) << TXQ_TXF_BURST_NUM_SHIFT; |
8f574b35 JY |
1133 | if (hw->nic_type == athr_l2c_b || hw->nic_type == athr_l2c_b2) |
1134 | max_pay_load_data >>= 1; | |
1135 | txq_ctrl_data |= max_pay_load_data; | |
43250ddd JY |
1136 | |
1137 | AT_WRITE_REG(hw, REG_TXQ_CTRL, txq_ctrl_data); | |
1138 | } | |
1139 | ||
1140 | static void atl1c_configure_rx(struct atl1c_adapter *adapter) | |
1141 | { | |
1142 | struct atl1c_hw *hw = &adapter->hw; | |
1143 | u32 rxq_ctrl_data; | |
1144 | ||
1145 | rxq_ctrl_data = (hw->rfd_burst & RXQ_RFD_BURST_NUM_MASK) << | |
1146 | RXQ_RFD_BURST_NUM_SHIFT; | |
1147 | ||
1148 | if (hw->ctrl_flags & ATL1C_RX_IPV6_CHKSUM) | |
1149 | rxq_ctrl_data |= IPV6_CHKSUM_CTRL_EN; | |
1150 | if (hw->rss_type == atl1c_rss_ipv4) | |
1151 | rxq_ctrl_data |= RSS_HASH_IPV4; | |
1152 | if (hw->rss_type == atl1c_rss_ipv4_tcp) | |
1153 | rxq_ctrl_data |= RSS_HASH_IPV4_TCP; | |
1154 | if (hw->rss_type == atl1c_rss_ipv6) | |
1155 | rxq_ctrl_data |= RSS_HASH_IPV6; | |
1156 | if (hw->rss_type == atl1c_rss_ipv6_tcp) | |
1157 | rxq_ctrl_data |= RSS_HASH_IPV6_TCP; | |
1158 | if (hw->rss_type != atl1c_rss_disable) | |
1159 | rxq_ctrl_data |= RRS_HASH_CTRL_EN; | |
1160 | ||
1161 | rxq_ctrl_data |= (hw->rss_mode & RSS_MODE_MASK) << | |
1162 | RSS_MODE_SHIFT; | |
1163 | rxq_ctrl_data |= (hw->rss_hash_bits & RSS_HASH_BITS_MASK) << | |
1164 | RSS_HASH_BITS_SHIFT; | |
1165 | if (hw->ctrl_flags & ATL1C_ASPM_CTRL_MON) | |
8f574b35 | 1166 | rxq_ctrl_data |= (ASPM_THRUPUT_LIMIT_1M & |
43250ddd JY |
1167 | ASPM_THRUPUT_LIMIT_MASK) << ASPM_THRUPUT_LIMIT_SHIFT; |
1168 | ||
1169 | AT_WRITE_REG(hw, REG_RXQ_CTRL, rxq_ctrl_data); | |
1170 | } | |
1171 | ||
1172 | static void atl1c_configure_rss(struct atl1c_adapter *adapter) | |
1173 | { | |
1174 | struct atl1c_hw *hw = &adapter->hw; | |
1175 | ||
1176 | AT_WRITE_REG(hw, REG_IDT_TABLE, hw->indirect_tab); | |
1177 | AT_WRITE_REG(hw, REG_BASE_CPU_NUMBER, hw->base_cpu); | |
1178 | } | |
1179 | ||
1180 | static void atl1c_configure_dma(struct atl1c_adapter *adapter) | |
1181 | { | |
1182 | struct atl1c_hw *hw = &adapter->hw; | |
1183 | u32 dma_ctrl_data; | |
1184 | ||
1185 | dma_ctrl_data = DMA_CTRL_DMAR_REQ_PRI; | |
1186 | if (hw->ctrl_flags & ATL1C_CMB_ENABLE) | |
1187 | dma_ctrl_data |= DMA_CTRL_CMB_EN; | |
1188 | if (hw->ctrl_flags & ATL1C_SMB_ENABLE) | |
1189 | dma_ctrl_data |= DMA_CTRL_SMB_EN; | |
1190 | else | |
1191 | dma_ctrl_data |= MAC_CTRL_SMB_DIS; | |
1192 | ||
1193 | switch (hw->dma_order) { | |
1194 | case atl1c_dma_ord_in: | |
1195 | dma_ctrl_data |= DMA_CTRL_DMAR_IN_ORDER; | |
1196 | break; | |
1197 | case atl1c_dma_ord_enh: | |
1198 | dma_ctrl_data |= DMA_CTRL_DMAR_ENH_ORDER; | |
1199 | break; | |
1200 | case atl1c_dma_ord_out: | |
1201 | dma_ctrl_data |= DMA_CTRL_DMAR_OUT_ORDER; | |
1202 | break; | |
1203 | default: | |
1204 | break; | |
1205 | } | |
1206 | ||
1207 | dma_ctrl_data |= (((u32)hw->dmar_block) & DMA_CTRL_DMAR_BURST_LEN_MASK) | |
1208 | << DMA_CTRL_DMAR_BURST_LEN_SHIFT; | |
1209 | dma_ctrl_data |= (((u32)hw->dmaw_block) & DMA_CTRL_DMAW_BURST_LEN_MASK) | |
1210 | << DMA_CTRL_DMAW_BURST_LEN_SHIFT; | |
1211 | dma_ctrl_data |= (((u32)hw->dmar_dly_cnt) & DMA_CTRL_DMAR_DLY_CNT_MASK) | |
1212 | << DMA_CTRL_DMAR_DLY_CNT_SHIFT; | |
1213 | dma_ctrl_data |= (((u32)hw->dmaw_dly_cnt) & DMA_CTRL_DMAW_DLY_CNT_MASK) | |
1214 | << DMA_CTRL_DMAW_DLY_CNT_SHIFT; | |
1215 | ||
1216 | AT_WRITE_REG(hw, REG_DMA_CTRL, dma_ctrl_data); | |
1217 | } | |
1218 | ||
1219 | /* | |
1220 | * Stop the mac, transmit and receive units | |
1221 | * hw - Struct containing variables accessed by shared code | |
1222 | * return : 0 or idle status (if error) | |
1223 | */ | |
1224 | static int atl1c_stop_mac(struct atl1c_hw *hw) | |
1225 | { | |
1226 | u32 data; | |
43250ddd JY |
1227 | |
1228 | AT_READ_REG(hw, REG_RXQ_CTRL, &data); | |
1229 | data &= ~(RXQ1_CTRL_EN | RXQ2_CTRL_EN | | |
1230 | RXQ3_CTRL_EN | RXQ_CTRL_EN); | |
1231 | AT_WRITE_REG(hw, REG_RXQ_CTRL, data); | |
1232 | ||
1233 | AT_READ_REG(hw, REG_TXQ_CTRL, &data); | |
1234 | data &= ~TXQ_CTRL_EN; | |
1235 | AT_WRITE_REG(hw, REG_TWSI_CTRL, data); | |
1236 | ||
c930a662 | 1237 | atl1c_wait_until_idle(hw); |
43250ddd JY |
1238 | |
1239 | AT_READ_REG(hw, REG_MAC_CTRL, &data); | |
1240 | data &= ~(MAC_CTRL_TX_EN | MAC_CTRL_RX_EN); | |
1241 | AT_WRITE_REG(hw, REG_MAC_CTRL, data); | |
1242 | ||
c930a662 | 1243 | return (int)atl1c_wait_until_idle(hw); |
43250ddd JY |
1244 | } |
1245 | ||
1246 | static void atl1c_enable_rx_ctrl(struct atl1c_hw *hw) | |
1247 | { | |
1248 | u32 data; | |
1249 | ||
1250 | AT_READ_REG(hw, REG_RXQ_CTRL, &data); | |
1251 | switch (hw->adapter->num_rx_queues) { | |
1252 | case 4: | |
1253 | data |= (RXQ3_CTRL_EN | RXQ2_CTRL_EN | RXQ1_CTRL_EN); | |
1254 | break; | |
1255 | case 3: | |
1256 | data |= (RXQ2_CTRL_EN | RXQ1_CTRL_EN); | |
1257 | break; | |
1258 | case 2: | |
1259 | data |= RXQ1_CTRL_EN; | |
1260 | break; | |
1261 | default: | |
1262 | break; | |
1263 | } | |
1264 | data |= RXQ_CTRL_EN; | |
1265 | AT_WRITE_REG(hw, REG_RXQ_CTRL, data); | |
1266 | } | |
1267 | ||
1268 | static void atl1c_enable_tx_ctrl(struct atl1c_hw *hw) | |
1269 | { | |
1270 | u32 data; | |
1271 | ||
1272 | AT_READ_REG(hw, REG_TXQ_CTRL, &data); | |
1273 | data |= TXQ_CTRL_EN; | |
1274 | AT_WRITE_REG(hw, REG_TXQ_CTRL, data); | |
1275 | } | |
1276 | ||
1277 | /* | |
1278 | * Reset the transmit and receive units; mask and clear all interrupts. | |
1279 | * hw - Struct containing variables accessed by shared code | |
1280 | * return : 0 or idle status (if error) | |
1281 | */ | |
1282 | static int atl1c_reset_mac(struct atl1c_hw *hw) | |
1283 | { | |
1284 | struct atl1c_adapter *adapter = (struct atl1c_adapter *)hw->adapter; | |
1285 | struct pci_dev *pdev = adapter->pdev; | |
8f574b35 | 1286 | u32 master_ctrl_data = 0; |
43250ddd JY |
1287 | |
1288 | AT_WRITE_REG(hw, REG_IMR, 0); | |
1289 | AT_WRITE_REG(hw, REG_ISR, ISR_DIS_INT); | |
1290 | ||
8f574b35 | 1291 | atl1c_stop_mac(hw); |
43250ddd JY |
1292 | /* |
1293 | * Issue Soft Reset to the MAC. This will reset the chip's | |
1294 | * transmit, receive, DMA. It will not effect | |
1295 | * the current PCI configuration. The global reset bit is self- | |
1296 | * clearing, and should clear within a microsecond. | |
1297 | */ | |
8f574b35 JY |
1298 | AT_READ_REG(hw, REG_MASTER_CTRL, &master_ctrl_data); |
1299 | master_ctrl_data |= MASTER_CTRL_OOB_DIS_OFF; | |
1300 | AT_WRITE_REGW(hw, REG_MASTER_CTRL, ((master_ctrl_data | MASTER_CTRL_SOFT_RST) | |
1301 | & 0xFFFF)); | |
1302 | ||
43250ddd JY |
1303 | AT_WRITE_FLUSH(hw); |
1304 | msleep(10); | |
1305 | /* Wait at least 10ms for All module to be Idle */ | |
c930a662 JP |
1306 | |
1307 | if (atl1c_wait_until_idle(hw)) { | |
43250ddd | 1308 | dev_err(&pdev->dev, |
c930a662 | 1309 | "MAC state machine can't be idle since" |
43250ddd JY |
1310 | " disabled for 10ms second\n"); |
1311 | return -1; | |
1312 | } | |
1313 | return 0; | |
1314 | } | |
1315 | ||
1316 | static void atl1c_disable_l0s_l1(struct atl1c_hw *hw) | |
1317 | { | |
1318 | u32 pm_ctrl_data; | |
1319 | ||
1320 | AT_READ_REG(hw, REG_PM_CTRL, &pm_ctrl_data); | |
1321 | pm_ctrl_data &= ~(PM_CTRL_L1_ENTRY_TIMER_MASK << | |
1322 | PM_CTRL_L1_ENTRY_TIMER_SHIFT); | |
1323 | pm_ctrl_data &= ~PM_CTRL_CLK_SWH_L1; | |
1324 | pm_ctrl_data &= ~PM_CTRL_ASPM_L0S_EN; | |
1325 | pm_ctrl_data &= ~PM_CTRL_ASPM_L1_EN; | |
1326 | pm_ctrl_data &= ~PM_CTRL_MAC_ASPM_CHK; | |
1327 | pm_ctrl_data &= ~PM_CTRL_SERDES_PD_EX_L1; | |
1328 | ||
1329 | pm_ctrl_data |= PM_CTRL_SERDES_BUDS_RX_L1_EN; | |
1330 | pm_ctrl_data |= PM_CTRL_SERDES_PLL_L1_EN; | |
1331 | pm_ctrl_data |= PM_CTRL_SERDES_L1_EN; | |
1332 | AT_WRITE_REG(hw, REG_PM_CTRL, pm_ctrl_data); | |
1333 | } | |
1334 | ||
1335 | /* | |
1336 | * Set ASPM state. | |
1337 | * Enable/disable L0s/L1 depend on link state. | |
1338 | */ | |
1339 | static void atl1c_set_aspm(struct atl1c_hw *hw, bool linkup) | |
1340 | { | |
1341 | u32 pm_ctrl_data; | |
496c185c | 1342 | u32 link_ctrl_data; |
8f574b35 | 1343 | u32 link_l1_timer = 0xF; |
43250ddd JY |
1344 | |
1345 | AT_READ_REG(hw, REG_PM_CTRL, &pm_ctrl_data); | |
496c185c | 1346 | AT_READ_REG(hw, REG_LINK_CTRL, &link_ctrl_data); |
496c185c | 1347 | |
8f574b35 | 1348 | pm_ctrl_data &= ~PM_CTRL_SERDES_PD_EX_L1; |
43250ddd JY |
1349 | pm_ctrl_data &= ~(PM_CTRL_L1_ENTRY_TIMER_MASK << |
1350 | PM_CTRL_L1_ENTRY_TIMER_SHIFT); | |
496c185c | 1351 | pm_ctrl_data &= ~(PM_CTRL_LCKDET_TIMER_MASK << |
8f574b35 JY |
1352 | PM_CTRL_LCKDET_TIMER_SHIFT); |
1353 | pm_ctrl_data |= AT_LCKDET_TIMER << PM_CTRL_LCKDET_TIMER_SHIFT; | |
496c185c | 1354 | |
8f574b35 JY |
1355 | if (hw->nic_type == athr_l2c_b || hw->nic_type == athr_l1d || |
1356 | hw->nic_type == athr_l2c_b2 || hw->nic_type == athr_l1d_2) { | |
496c185c LR |
1357 | link_ctrl_data &= ~LINK_CTRL_EXT_SYNC; |
1358 | if (!(hw->ctrl_flags & ATL1C_APS_MODE_ENABLE)) { | |
8f574b35 | 1359 | if (hw->nic_type == athr_l2c_b && hw->revision_id == L2CB_V10) |
496c185c LR |
1360 | link_ctrl_data |= LINK_CTRL_EXT_SYNC; |
1361 | } | |
1362 | ||
1363 | AT_WRITE_REG(hw, REG_LINK_CTRL, link_ctrl_data); | |
1364 | ||
8f574b35 JY |
1365 | pm_ctrl_data |= PM_CTRL_RCVR_WT_TIMER; |
1366 | pm_ctrl_data &= ~(PM_CTRL_PM_REQ_TIMER_MASK << | |
1367 | PM_CTRL_PM_REQ_TIMER_SHIFT); | |
1368 | pm_ctrl_data |= AT_ASPM_L1_TIMER << | |
1369 | PM_CTRL_PM_REQ_TIMER_SHIFT; | |
496c185c LR |
1370 | pm_ctrl_data &= ~PM_CTRL_SA_DLY_EN; |
1371 | pm_ctrl_data &= ~PM_CTRL_HOTRST; | |
1372 | pm_ctrl_data |= 1 << PM_CTRL_L1_ENTRY_TIMER_SHIFT; | |
1373 | pm_ctrl_data |= PM_CTRL_SERDES_PD_EX_L1; | |
1374 | } | |
8f574b35 | 1375 | pm_ctrl_data |= PM_CTRL_MAC_ASPM_CHK; |
43250ddd | 1376 | if (linkup) { |
496c185c LR |
1377 | pm_ctrl_data &= ~PM_CTRL_ASPM_L1_EN; |
1378 | pm_ctrl_data &= ~PM_CTRL_ASPM_L0S_EN; | |
1379 | if (hw->ctrl_flags & ATL1C_ASPM_L1_SUPPORT) | |
1380 | pm_ctrl_data |= PM_CTRL_ASPM_L1_EN; | |
1381 | if (hw->ctrl_flags & ATL1C_ASPM_L0S_SUPPORT) | |
1382 | pm_ctrl_data |= PM_CTRL_ASPM_L0S_EN; | |
1383 | ||
8f574b35 JY |
1384 | if (hw->nic_type == athr_l2c_b || hw->nic_type == athr_l1d || |
1385 | hw->nic_type == athr_l2c_b2 || hw->nic_type == athr_l1d_2) { | |
496c185c LR |
1386 | if (hw->nic_type == athr_l2c_b) |
1387 | if (!(hw->ctrl_flags & ATL1C_APS_MODE_ENABLE)) | |
8f574b35 | 1388 | pm_ctrl_data &= ~PM_CTRL_ASPM_L0S_EN; |
496c185c LR |
1389 | pm_ctrl_data &= ~PM_CTRL_SERDES_L1_EN; |
1390 | pm_ctrl_data &= ~PM_CTRL_SERDES_PLL_L1_EN; | |
1391 | pm_ctrl_data &= ~PM_CTRL_SERDES_BUDS_RX_L1_EN; | |
1392 | pm_ctrl_data |= PM_CTRL_CLK_SWH_L1; | |
8f574b35 JY |
1393 | if (hw->adapter->link_speed == SPEED_100 || |
1394 | hw->adapter->link_speed == SPEED_1000) { | |
1395 | pm_ctrl_data &= ~(PM_CTRL_L1_ENTRY_TIMER_MASK << | |
1396 | PM_CTRL_L1_ENTRY_TIMER_SHIFT); | |
1397 | if (hw->nic_type == athr_l2c_b) | |
1398 | link_l1_timer = 7; | |
1399 | else if (hw->nic_type == athr_l2c_b2 || | |
1400 | hw->nic_type == athr_l1d_2) | |
1401 | link_l1_timer = 4; | |
1402 | pm_ctrl_data |= link_l1_timer << | |
1403 | PM_CTRL_L1_ENTRY_TIMER_SHIFT; | |
496c185c LR |
1404 | } |
1405 | } else { | |
1406 | pm_ctrl_data |= PM_CTRL_SERDES_L1_EN; | |
1407 | pm_ctrl_data |= PM_CTRL_SERDES_PLL_L1_EN; | |
1408 | pm_ctrl_data |= PM_CTRL_SERDES_BUDS_RX_L1_EN; | |
1409 | pm_ctrl_data &= ~PM_CTRL_CLK_SWH_L1; | |
1410 | pm_ctrl_data &= ~PM_CTRL_ASPM_L0S_EN; | |
1411 | pm_ctrl_data &= ~PM_CTRL_ASPM_L1_EN; | |
43250ddd | 1412 | |
8f574b35 | 1413 | } |
43250ddd | 1414 | } else { |
52fbc100 | 1415 | pm_ctrl_data &= ~PM_CTRL_SERDES_L1_EN; |
43250ddd JY |
1416 | pm_ctrl_data &= ~PM_CTRL_ASPM_L0S_EN; |
1417 | pm_ctrl_data &= ~PM_CTRL_SERDES_PLL_L1_EN; | |
43250ddd JY |
1418 | pm_ctrl_data |= PM_CTRL_CLK_SWH_L1; |
1419 | ||
1420 | if (hw->ctrl_flags & ATL1C_ASPM_L1_SUPPORT) | |
1421 | pm_ctrl_data |= PM_CTRL_ASPM_L1_EN; | |
1422 | else | |
1423 | pm_ctrl_data &= ~PM_CTRL_ASPM_L1_EN; | |
1424 | } | |
43250ddd | 1425 | AT_WRITE_REG(hw, REG_PM_CTRL, pm_ctrl_data); |
8f574b35 JY |
1426 | |
1427 | return; | |
43250ddd JY |
1428 | } |
1429 | ||
1430 | static void atl1c_setup_mac_ctrl(struct atl1c_adapter *adapter) | |
1431 | { | |
1432 | struct atl1c_hw *hw = &adapter->hw; | |
1433 | struct net_device *netdev = adapter->netdev; | |
1434 | u32 mac_ctrl_data; | |
1435 | ||
1436 | mac_ctrl_data = MAC_CTRL_TX_EN | MAC_CTRL_RX_EN; | |
1437 | mac_ctrl_data |= (MAC_CTRL_TX_FLOW | MAC_CTRL_RX_FLOW); | |
1438 | ||
1439 | if (adapter->link_duplex == FULL_DUPLEX) { | |
1440 | hw->mac_duplex = true; | |
1441 | mac_ctrl_data |= MAC_CTRL_DUPLX; | |
1442 | } | |
1443 | ||
1444 | if (adapter->link_speed == SPEED_1000) | |
1445 | hw->mac_speed = atl1c_mac_speed_1000; | |
1446 | else | |
1447 | hw->mac_speed = atl1c_mac_speed_10_100; | |
1448 | ||
1449 | mac_ctrl_data |= (hw->mac_speed & MAC_CTRL_SPEED_MASK) << | |
1450 | MAC_CTRL_SPEED_SHIFT; | |
1451 | ||
1452 | mac_ctrl_data |= (MAC_CTRL_ADD_CRC | MAC_CTRL_PAD); | |
1453 | mac_ctrl_data |= ((hw->preamble_len & MAC_CTRL_PRMLEN_MASK) << | |
1454 | MAC_CTRL_PRMLEN_SHIFT); | |
1455 | ||
46facce9 | 1456 | __atl1c_vlan_mode(netdev->features, &mac_ctrl_data); |
43250ddd JY |
1457 | |
1458 | mac_ctrl_data |= MAC_CTRL_BC_EN; | |
1459 | if (netdev->flags & IFF_PROMISC) | |
1460 | mac_ctrl_data |= MAC_CTRL_PROMIS_EN; | |
1461 | if (netdev->flags & IFF_ALLMULTI) | |
1462 | mac_ctrl_data |= MAC_CTRL_MC_ALL_EN; | |
1463 | ||
1464 | mac_ctrl_data |= MAC_CTRL_SINGLE_PAUSE_EN; | |
8f574b35 JY |
1465 | if (hw->nic_type == athr_l1d || hw->nic_type == athr_l2c_b2 || |
1466 | hw->nic_type == athr_l1d_2) { | |
496c185c LR |
1467 | mac_ctrl_data |= MAC_CTRL_SPEED_MODE_SW; |
1468 | mac_ctrl_data |= MAC_CTRL_HASH_ALG_CRC32; | |
1469 | } | |
43250ddd JY |
1470 | AT_WRITE_REG(hw, REG_MAC_CTRL, mac_ctrl_data); |
1471 | } | |
1472 | ||
1473 | /* | |
1474 | * atl1c_configure - Configure Transmit&Receive Unit after Reset | |
1475 | * @adapter: board private structure | |
1476 | * | |
1477 | * Configure the Tx /Rx unit of the MAC after a reset. | |
1478 | */ | |
1479 | static int atl1c_configure(struct atl1c_adapter *adapter) | |
1480 | { | |
1481 | struct atl1c_hw *hw = &adapter->hw; | |
1482 | u32 master_ctrl_data = 0; | |
1483 | u32 intr_modrt_data; | |
8f574b35 | 1484 | u32 data; |
43250ddd JY |
1485 | |
1486 | /* clear interrupt status */ | |
1487 | AT_WRITE_REG(hw, REG_ISR, 0xFFFFFFFF); | |
1488 | /* Clear any WOL status */ | |
1489 | AT_WRITE_REG(hw, REG_WOL_CTRL, 0); | |
1490 | /* set Interrupt Clear Timer | |
1491 | * HW will enable self to assert interrupt event to system after | |
1492 | * waiting x-time for software to notify it accept interrupt. | |
1493 | */ | |
8f574b35 JY |
1494 | |
1495 | data = CLK_GATING_EN_ALL; | |
1496 | if (hw->ctrl_flags & ATL1C_CLK_GATING_EN) { | |
1497 | if (hw->nic_type == athr_l2c_b) | |
1498 | data &= ~CLK_GATING_RXMAC_EN; | |
1499 | } else | |
1500 | data = 0; | |
1501 | AT_WRITE_REG(hw, REG_CLK_GATING_CTRL, data); | |
1502 | ||
43250ddd JY |
1503 | AT_WRITE_REG(hw, REG_INT_RETRIG_TIMER, |
1504 | hw->ict & INT_RETRIG_TIMER_MASK); | |
1505 | ||
1506 | atl1c_configure_des_ring(adapter); | |
1507 | ||
1508 | if (hw->ctrl_flags & ATL1C_INTR_MODRT_ENABLE) { | |
1509 | intr_modrt_data = (hw->tx_imt & IRQ_MODRT_TIMER_MASK) << | |
1510 | IRQ_MODRT_TX_TIMER_SHIFT; | |
1511 | intr_modrt_data |= (hw->rx_imt & IRQ_MODRT_TIMER_MASK) << | |
1512 | IRQ_MODRT_RX_TIMER_SHIFT; | |
1513 | AT_WRITE_REG(hw, REG_IRQ_MODRT_TIMER_INIT, intr_modrt_data); | |
1514 | master_ctrl_data |= | |
1515 | MASTER_CTRL_TX_ITIMER_EN | MASTER_CTRL_RX_ITIMER_EN; | |
1516 | } | |
1517 | ||
1518 | if (hw->ctrl_flags & ATL1C_INTR_CLEAR_ON_READ) | |
1519 | master_ctrl_data |= MASTER_CTRL_INT_RDCLR; | |
1520 | ||
8f574b35 | 1521 | master_ctrl_data |= MASTER_CTRL_SA_TIMER_EN; |
43250ddd JY |
1522 | AT_WRITE_REG(hw, REG_MASTER_CTRL, master_ctrl_data); |
1523 | ||
1524 | if (hw->ctrl_flags & ATL1C_CMB_ENABLE) { | |
1525 | AT_WRITE_REG(hw, REG_CMB_TPD_THRESH, | |
1526 | hw->cmb_tpd & CMB_TPD_THRESH_MASK); | |
1527 | AT_WRITE_REG(hw, REG_CMB_TX_TIMER, | |
1528 | hw->cmb_tx_timer & CMB_TX_TIMER_MASK); | |
1529 | } | |
1530 | ||
1531 | if (hw->ctrl_flags & ATL1C_SMB_ENABLE) | |
1532 | AT_WRITE_REG(hw, REG_SMB_STAT_TIMER, | |
1533 | hw->smb_timer & SMB_STAT_TIMER_MASK); | |
1534 | /* set MTU */ | |
1535 | AT_WRITE_REG(hw, REG_MTU, hw->max_frame_size + ETH_HLEN + | |
1536 | VLAN_HLEN + ETH_FCS_LEN); | |
1537 | /* HDS, disable */ | |
1538 | AT_WRITE_REG(hw, REG_HDS_CTRL, 0); | |
1539 | ||
1540 | atl1c_configure_tx(adapter); | |
1541 | atl1c_configure_rx(adapter); | |
1542 | atl1c_configure_rss(adapter); | |
1543 | atl1c_configure_dma(adapter); | |
1544 | ||
1545 | return 0; | |
1546 | } | |
1547 | ||
1548 | static void atl1c_update_hw_stats(struct atl1c_adapter *adapter) | |
1549 | { | |
1550 | u16 hw_reg_addr = 0; | |
1551 | unsigned long *stats_item = NULL; | |
1552 | u32 data; | |
1553 | ||
1554 | /* update rx status */ | |
1555 | hw_reg_addr = REG_MAC_RX_STATUS_BIN; | |
1556 | stats_item = &adapter->hw_stats.rx_ok; | |
1557 | while (hw_reg_addr <= REG_MAC_RX_STATUS_END) { | |
1558 | AT_READ_REG(&adapter->hw, hw_reg_addr, &data); | |
1559 | *stats_item += data; | |
1560 | stats_item++; | |
1561 | hw_reg_addr += 4; | |
1562 | } | |
1563 | /* update tx status */ | |
1564 | hw_reg_addr = REG_MAC_TX_STATUS_BIN; | |
1565 | stats_item = &adapter->hw_stats.tx_ok; | |
1566 | while (hw_reg_addr <= REG_MAC_TX_STATUS_END) { | |
1567 | AT_READ_REG(&adapter->hw, hw_reg_addr, &data); | |
1568 | *stats_item += data; | |
1569 | stats_item++; | |
1570 | hw_reg_addr += 4; | |
1571 | } | |
1572 | } | |
1573 | ||
1574 | /* | |
1575 | * atl1c_get_stats - Get System Network Statistics | |
1576 | * @netdev: network interface device structure | |
1577 | * | |
1578 | * Returns the address of the device statistics structure. | |
1579 | * The statistics are actually updated from the timer callback. | |
1580 | */ | |
1581 | static struct net_device_stats *atl1c_get_stats(struct net_device *netdev) | |
1582 | { | |
1583 | struct atl1c_adapter *adapter = netdev_priv(netdev); | |
1584 | struct atl1c_hw_stats *hw_stats = &adapter->hw_stats; | |
a2c483a1 | 1585 | struct net_device_stats *net_stats = &netdev->stats; |
43250ddd JY |
1586 | |
1587 | atl1c_update_hw_stats(adapter); | |
1588 | net_stats->rx_packets = hw_stats->rx_ok; | |
1589 | net_stats->tx_packets = hw_stats->tx_ok; | |
1590 | net_stats->rx_bytes = hw_stats->rx_byte_cnt; | |
1591 | net_stats->tx_bytes = hw_stats->tx_byte_cnt; | |
1592 | net_stats->multicast = hw_stats->rx_mcast; | |
1593 | net_stats->collisions = hw_stats->tx_1_col + | |
1594 | hw_stats->tx_2_col * 2 + | |
1595 | hw_stats->tx_late_col + hw_stats->tx_abort_col; | |
1596 | net_stats->rx_errors = hw_stats->rx_frag + hw_stats->rx_fcs_err + | |
1597 | hw_stats->rx_len_err + hw_stats->rx_sz_ov + | |
1598 | hw_stats->rx_rrd_ov + hw_stats->rx_align_err; | |
1599 | net_stats->rx_fifo_errors = hw_stats->rx_rxf_ov; | |
1600 | net_stats->rx_length_errors = hw_stats->rx_len_err; | |
1601 | net_stats->rx_crc_errors = hw_stats->rx_fcs_err; | |
1602 | net_stats->rx_frame_errors = hw_stats->rx_align_err; | |
1603 | net_stats->rx_over_errors = hw_stats->rx_rrd_ov + hw_stats->rx_rxf_ov; | |
1604 | ||
1605 | net_stats->rx_missed_errors = hw_stats->rx_rrd_ov + hw_stats->rx_rxf_ov; | |
1606 | ||
1607 | net_stats->tx_errors = hw_stats->tx_late_col + hw_stats->tx_abort_col + | |
1608 | hw_stats->tx_underrun + hw_stats->tx_trunc; | |
1609 | net_stats->tx_fifo_errors = hw_stats->tx_underrun; | |
1610 | net_stats->tx_aborted_errors = hw_stats->tx_abort_col; | |
1611 | net_stats->tx_window_errors = hw_stats->tx_late_col; | |
1612 | ||
a2c483a1 | 1613 | return net_stats; |
43250ddd JY |
1614 | } |
1615 | ||
1616 | static inline void atl1c_clear_phy_int(struct atl1c_adapter *adapter) | |
1617 | { | |
1618 | u16 phy_data; | |
1619 | ||
1620 | spin_lock(&adapter->mdio_lock); | |
1621 | atl1c_read_phy_reg(&adapter->hw, MII_ISR, &phy_data); | |
1622 | spin_unlock(&adapter->mdio_lock); | |
1623 | } | |
1624 | ||
1625 | static bool atl1c_clean_tx_irq(struct atl1c_adapter *adapter, | |
1626 | enum atl1c_trans_queue type) | |
1627 | { | |
1628 | struct atl1c_tpd_ring *tpd_ring = (struct atl1c_tpd_ring *) | |
1629 | &adapter->tpd_ring[type]; | |
1630 | struct atl1c_buffer *buffer_info; | |
c6060be4 | 1631 | struct pci_dev *pdev = adapter->pdev; |
43250ddd JY |
1632 | u16 next_to_clean = atomic_read(&tpd_ring->next_to_clean); |
1633 | u16 hw_next_to_clean; | |
1634 | u16 shift; | |
1635 | u32 data; | |
1636 | ||
1637 | if (type == atl1c_trans_high) | |
1638 | shift = MB_HTPD_CONS_IDX_SHIFT; | |
1639 | else | |
1640 | shift = MB_NTPD_CONS_IDX_SHIFT; | |
1641 | ||
1642 | AT_READ_REG(&adapter->hw, REG_MB_PRIO_CONS_IDX, &data); | |
1643 | hw_next_to_clean = (data >> shift) & MB_PRIO_PROD_IDX_MASK; | |
1644 | ||
1645 | while (next_to_clean != hw_next_to_clean) { | |
1646 | buffer_info = &tpd_ring->buffer_info[next_to_clean]; | |
c6060be4 | 1647 | atl1c_clean_buffer(pdev, buffer_info, 1); |
43250ddd JY |
1648 | if (++next_to_clean == tpd_ring->count) |
1649 | next_to_clean = 0; | |
1650 | atomic_set(&tpd_ring->next_to_clean, next_to_clean); | |
1651 | } | |
1652 | ||
1653 | if (netif_queue_stopped(adapter->netdev) && | |
1654 | netif_carrier_ok(adapter->netdev)) { | |
1655 | netif_wake_queue(adapter->netdev); | |
1656 | } | |
1657 | ||
1658 | return true; | |
1659 | } | |
1660 | ||
1661 | /* | |
1662 | * atl1c_intr - Interrupt Handler | |
1663 | * @irq: interrupt number | |
1664 | * @data: pointer to a network interface device structure | |
1665 | * @pt_regs: CPU registers structure | |
1666 | */ | |
1667 | static irqreturn_t atl1c_intr(int irq, void *data) | |
1668 | { | |
1669 | struct net_device *netdev = data; | |
1670 | struct atl1c_adapter *adapter = netdev_priv(netdev); | |
1671 | struct pci_dev *pdev = adapter->pdev; | |
1672 | struct atl1c_hw *hw = &adapter->hw; | |
1673 | int max_ints = AT_MAX_INT_WORK; | |
1674 | int handled = IRQ_NONE; | |
1675 | u32 status; | |
1676 | u32 reg_data; | |
1677 | ||
1678 | do { | |
1679 | AT_READ_REG(hw, REG_ISR, ®_data); | |
1680 | status = reg_data & hw->intr_mask; | |
1681 | ||
1682 | if (status == 0 || (status & ISR_DIS_INT) != 0) { | |
1683 | if (max_ints != AT_MAX_INT_WORK) | |
1684 | handled = IRQ_HANDLED; | |
1685 | break; | |
1686 | } | |
1687 | /* link event */ | |
1688 | if (status & ISR_GPHY) | |
1689 | atl1c_clear_phy_int(adapter); | |
1690 | /* Ack ISR */ | |
1691 | AT_WRITE_REG(hw, REG_ISR, status | ISR_DIS_INT); | |
1692 | if (status & ISR_RX_PKT) { | |
1693 | if (likely(napi_schedule_prep(&adapter->napi))) { | |
1694 | hw->intr_mask &= ~ISR_RX_PKT; | |
1695 | AT_WRITE_REG(hw, REG_IMR, hw->intr_mask); | |
1696 | __napi_schedule(&adapter->napi); | |
1697 | } | |
1698 | } | |
1699 | if (status & ISR_TX_PKT) | |
1700 | atl1c_clean_tx_irq(adapter, atl1c_trans_normal); | |
1701 | ||
1702 | handled = IRQ_HANDLED; | |
1703 | /* check if PCIE PHY Link down */ | |
1704 | if (status & ISR_ERROR) { | |
1705 | if (netif_msg_hw(adapter)) | |
1706 | dev_err(&pdev->dev, | |
1707 | "atl1c hardware error (status = 0x%x)\n", | |
1708 | status & ISR_ERROR); | |
1709 | /* reset MAC */ | |
cb190546 JY |
1710 | adapter->work_event |= ATL1C_WORK_EVENT_RESET; |
1711 | schedule_work(&adapter->common_task); | |
8f574b35 | 1712 | return IRQ_HANDLED; |
43250ddd JY |
1713 | } |
1714 | ||
1715 | if (status & ISR_OVER) | |
1716 | if (netif_msg_intr(adapter)) | |
1717 | dev_warn(&pdev->dev, | |
af901ca1 | 1718 | "TX/RX overflow (status = 0x%x)\n", |
43250ddd JY |
1719 | status & ISR_OVER); |
1720 | ||
1721 | /* link event */ | |
1722 | if (status & (ISR_GPHY | ISR_MANUAL)) { | |
a2c483a1 | 1723 | netdev->stats.tx_carrier_errors++; |
43250ddd JY |
1724 | atl1c_link_chg_event(adapter); |
1725 | break; | |
1726 | } | |
1727 | ||
1728 | } while (--max_ints > 0); | |
1729 | /* re-enable Interrupt*/ | |
1730 | AT_WRITE_REG(&adapter->hw, REG_ISR, 0); | |
1731 | return handled; | |
1732 | } | |
1733 | ||
1734 | static inline void atl1c_rx_checksum(struct atl1c_adapter *adapter, | |
1735 | struct sk_buff *skb, struct atl1c_recv_ret_status *prrs) | |
1736 | { | |
1737 | /* | |
1738 | * The pid field in RRS in not correct sometimes, so we | |
1739 | * cannot figure out if the packet is fragmented or not, | |
1740 | * so we tell the KERNEL CHECKSUM_NONE | |
1741 | */ | |
bc8acf2c | 1742 | skb_checksum_none_assert(skb); |
43250ddd JY |
1743 | } |
1744 | ||
1745 | static int atl1c_alloc_rx_buffer(struct atl1c_adapter *adapter, const int ringid) | |
1746 | { | |
1747 | struct atl1c_rfd_ring *rfd_ring = &adapter->rfd_ring[ringid]; | |
1748 | struct pci_dev *pdev = adapter->pdev; | |
1749 | struct atl1c_buffer *buffer_info, *next_info; | |
1750 | struct sk_buff *skb; | |
1751 | void *vir_addr = NULL; | |
1752 | u16 num_alloc = 0; | |
1753 | u16 rfd_next_to_use, next_next; | |
1754 | struct atl1c_rx_free_desc *rfd_desc; | |
1755 | ||
1756 | next_next = rfd_next_to_use = rfd_ring->next_to_use; | |
1757 | if (++next_next == rfd_ring->count) | |
1758 | next_next = 0; | |
1759 | buffer_info = &rfd_ring->buffer_info[rfd_next_to_use]; | |
1760 | next_info = &rfd_ring->buffer_info[next_next]; | |
1761 | ||
c6060be4 | 1762 | while (next_info->flags & ATL1C_BUFFER_FREE) { |
43250ddd JY |
1763 | rfd_desc = ATL1C_RFD_DESC(rfd_ring, rfd_next_to_use); |
1764 | ||
1765 | skb = dev_alloc_skb(adapter->rx_buffer_len); | |
1766 | if (unlikely(!skb)) { | |
1767 | if (netif_msg_rx_err(adapter)) | |
1768 | dev_warn(&pdev->dev, "alloc rx buffer failed\n"); | |
1769 | break; | |
1770 | } | |
1771 | ||
1772 | /* | |
1773 | * Make buffer alignment 2 beyond a 16 byte boundary | |
1774 | * this will result in a 16 byte aligned IP header after | |
1775 | * the 14 byte MAC header is removed | |
1776 | */ | |
1777 | vir_addr = skb->data; | |
c6060be4 | 1778 | ATL1C_SET_BUFFER_STATE(buffer_info, ATL1C_BUFFER_BUSY); |
43250ddd JY |
1779 | buffer_info->skb = skb; |
1780 | buffer_info->length = adapter->rx_buffer_len; | |
1781 | buffer_info->dma = pci_map_single(pdev, vir_addr, | |
1782 | buffer_info->length, | |
1783 | PCI_DMA_FROMDEVICE); | |
4b45e342 JY |
1784 | ATL1C_SET_PCIMAP_TYPE(buffer_info, ATL1C_PCIMAP_SINGLE, |
1785 | ATL1C_PCIMAP_FROMDEVICE); | |
43250ddd JY |
1786 | rfd_desc->buffer_addr = cpu_to_le64(buffer_info->dma); |
1787 | rfd_next_to_use = next_next; | |
1788 | if (++next_next == rfd_ring->count) | |
1789 | next_next = 0; | |
1790 | buffer_info = &rfd_ring->buffer_info[rfd_next_to_use]; | |
1791 | next_info = &rfd_ring->buffer_info[next_next]; | |
1792 | num_alloc++; | |
1793 | } | |
1794 | ||
1795 | if (num_alloc) { | |
1796 | /* TODO: update mailbox here */ | |
1797 | wmb(); | |
1798 | rfd_ring->next_to_use = rfd_next_to_use; | |
1799 | AT_WRITE_REG(&adapter->hw, atl1c_rfd_prod_idx_regs[ringid], | |
1800 | rfd_ring->next_to_use & MB_RFDX_PROD_IDX_MASK); | |
1801 | } | |
1802 | ||
1803 | return num_alloc; | |
1804 | } | |
1805 | ||
1806 | static void atl1c_clean_rrd(struct atl1c_rrd_ring *rrd_ring, | |
1807 | struct atl1c_recv_ret_status *rrs, u16 num) | |
1808 | { | |
1809 | u16 i; | |
1810 | /* the relationship between rrd and rfd is one map one */ | |
1811 | for (i = 0; i < num; i++, rrs = ATL1C_RRD_DESC(rrd_ring, | |
1812 | rrd_ring->next_to_clean)) { | |
1813 | rrs->word3 &= ~RRS_RXD_UPDATED; | |
1814 | if (++rrd_ring->next_to_clean == rrd_ring->count) | |
1815 | rrd_ring->next_to_clean = 0; | |
1816 | } | |
1817 | } | |
1818 | ||
1819 | static void atl1c_clean_rfd(struct atl1c_rfd_ring *rfd_ring, | |
1820 | struct atl1c_recv_ret_status *rrs, u16 num) | |
1821 | { | |
1822 | u16 i; | |
1823 | u16 rfd_index; | |
1824 | struct atl1c_buffer *buffer_info = rfd_ring->buffer_info; | |
1825 | ||
1826 | rfd_index = (rrs->word0 >> RRS_RX_RFD_INDEX_SHIFT) & | |
1827 | RRS_RX_RFD_INDEX_MASK; | |
1828 | for (i = 0; i < num; i++) { | |
1829 | buffer_info[rfd_index].skb = NULL; | |
c6060be4 JY |
1830 | ATL1C_SET_BUFFER_STATE(&buffer_info[rfd_index], |
1831 | ATL1C_BUFFER_FREE); | |
43250ddd JY |
1832 | if (++rfd_index == rfd_ring->count) |
1833 | rfd_index = 0; | |
1834 | } | |
1835 | rfd_ring->next_to_clean = rfd_index; | |
1836 | } | |
1837 | ||
1838 | static void atl1c_clean_rx_irq(struct atl1c_adapter *adapter, u8 que, | |
1839 | int *work_done, int work_to_do) | |
1840 | { | |
1841 | u16 rfd_num, rfd_index; | |
1842 | u16 count = 0; | |
1843 | u16 length; | |
1844 | struct pci_dev *pdev = adapter->pdev; | |
1845 | struct net_device *netdev = adapter->netdev; | |
1846 | struct atl1c_rfd_ring *rfd_ring = &adapter->rfd_ring[que]; | |
1847 | struct atl1c_rrd_ring *rrd_ring = &adapter->rrd_ring[que]; | |
1848 | struct sk_buff *skb; | |
1849 | struct atl1c_recv_ret_status *rrs; | |
1850 | struct atl1c_buffer *buffer_info; | |
1851 | ||
1852 | while (1) { | |
1853 | if (*work_done >= work_to_do) | |
1854 | break; | |
1855 | rrs = ATL1C_RRD_DESC(rrd_ring, rrd_ring->next_to_clean); | |
1856 | if (likely(RRS_RXD_IS_VALID(rrs->word3))) { | |
1857 | rfd_num = (rrs->word0 >> RRS_RX_RFD_CNT_SHIFT) & | |
1858 | RRS_RX_RFD_CNT_MASK; | |
37b76c69 | 1859 | if (unlikely(rfd_num != 1)) |
43250ddd JY |
1860 | /* TODO support mul rfd*/ |
1861 | if (netif_msg_rx_err(adapter)) | |
1862 | dev_warn(&pdev->dev, | |
1863 | "Multi rfd not support yet!\n"); | |
1864 | goto rrs_checked; | |
1865 | } else { | |
1866 | break; | |
1867 | } | |
1868 | rrs_checked: | |
1869 | atl1c_clean_rrd(rrd_ring, rrs, rfd_num); | |
1870 | if (rrs->word3 & (RRS_RX_ERR_SUM | RRS_802_3_LEN_ERR)) { | |
1871 | atl1c_clean_rfd(rfd_ring, rrs, rfd_num); | |
1872 | if (netif_msg_rx_err(adapter)) | |
1873 | dev_warn(&pdev->dev, | |
1874 | "wrong packet! rrs word3 is %x\n", | |
1875 | rrs->word3); | |
1876 | continue; | |
1877 | } | |
1878 | ||
1879 | length = le16_to_cpu((rrs->word3 >> RRS_PKT_SIZE_SHIFT) & | |
1880 | RRS_PKT_SIZE_MASK); | |
1881 | /* Good Receive */ | |
1882 | if (likely(rfd_num == 1)) { | |
1883 | rfd_index = (rrs->word0 >> RRS_RX_RFD_INDEX_SHIFT) & | |
1884 | RRS_RX_RFD_INDEX_MASK; | |
1885 | buffer_info = &rfd_ring->buffer_info[rfd_index]; | |
1886 | pci_unmap_single(pdev, buffer_info->dma, | |
1887 | buffer_info->length, PCI_DMA_FROMDEVICE); | |
1888 | skb = buffer_info->skb; | |
1889 | } else { | |
1890 | /* TODO */ | |
1891 | if (netif_msg_rx_err(adapter)) | |
1892 | dev_warn(&pdev->dev, | |
1893 | "Multi rfd not support yet!\n"); | |
1894 | break; | |
1895 | } | |
1896 | atl1c_clean_rfd(rfd_ring, rrs, rfd_num); | |
1897 | skb_put(skb, length - ETH_FCS_LEN); | |
1898 | skb->protocol = eth_type_trans(skb, netdev); | |
43250ddd | 1899 | atl1c_rx_checksum(adapter, skb, rrs); |
46facce9 | 1900 | if (rrs->word3 & RRS_VLAN_INS) { |
43250ddd JY |
1901 | u16 vlan; |
1902 | ||
1903 | AT_TAG_TO_VLAN(rrs->vlan_tag, vlan); | |
1904 | vlan = le16_to_cpu(vlan); | |
46facce9 JP |
1905 | __vlan_hwaccel_put_tag(skb, vlan); |
1906 | } | |
1907 | netif_receive_skb(skb); | |
43250ddd | 1908 | |
43250ddd JY |
1909 | (*work_done)++; |
1910 | count++; | |
1911 | } | |
1912 | if (count) | |
1913 | atl1c_alloc_rx_buffer(adapter, que); | |
1914 | } | |
1915 | ||
1916 | /* | |
1917 | * atl1c_clean - NAPI Rx polling callback | |
1918 | * @adapter: board private structure | |
1919 | */ | |
1920 | static int atl1c_clean(struct napi_struct *napi, int budget) | |
1921 | { | |
1922 | struct atl1c_adapter *adapter = | |
1923 | container_of(napi, struct atl1c_adapter, napi); | |
1924 | int work_done = 0; | |
1925 | ||
1926 | /* Keep link state information with original netdev */ | |
1927 | if (!netif_carrier_ok(adapter->netdev)) | |
1928 | goto quit_polling; | |
1929 | /* just enable one RXQ */ | |
1930 | atl1c_clean_rx_irq(adapter, 0, &work_done, budget); | |
1931 | ||
1932 | if (work_done < budget) { | |
1933 | quit_polling: | |
1934 | napi_complete(napi); | |
1935 | adapter->hw.intr_mask |= ISR_RX_PKT; | |
1936 | AT_WRITE_REG(&adapter->hw, REG_IMR, adapter->hw.intr_mask); | |
1937 | } | |
1938 | return work_done; | |
1939 | } | |
1940 | ||
1941 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
1942 | ||
1943 | /* | |
1944 | * Polling 'interrupt' - used by things like netconsole to send skbs | |
1945 | * without having to re-enable interrupts. It's not called while | |
1946 | * the interrupt routine is executing. | |
1947 | */ | |
1948 | static void atl1c_netpoll(struct net_device *netdev) | |
1949 | { | |
1950 | struct atl1c_adapter *adapter = netdev_priv(netdev); | |
1951 | ||
1952 | disable_irq(adapter->pdev->irq); | |
1953 | atl1c_intr(adapter->pdev->irq, netdev); | |
1954 | enable_irq(adapter->pdev->irq); | |
1955 | } | |
1956 | #endif | |
1957 | ||
1958 | static inline u16 atl1c_tpd_avail(struct atl1c_adapter *adapter, enum atl1c_trans_queue type) | |
1959 | { | |
1960 | struct atl1c_tpd_ring *tpd_ring = &adapter->tpd_ring[type]; | |
1961 | u16 next_to_use = 0; | |
1962 | u16 next_to_clean = 0; | |
1963 | ||
1964 | next_to_clean = atomic_read(&tpd_ring->next_to_clean); | |
1965 | next_to_use = tpd_ring->next_to_use; | |
1966 | ||
1967 | return (u16)(next_to_clean > next_to_use) ? | |
1968 | (next_to_clean - next_to_use - 1) : | |
1969 | (tpd_ring->count + next_to_clean - next_to_use - 1); | |
1970 | } | |
1971 | ||
1972 | /* | |
1973 | * get next usable tpd | |
1974 | * Note: should call atl1c_tdp_avail to make sure | |
1975 | * there is enough tpd to use | |
1976 | */ | |
1977 | static struct atl1c_tpd_desc *atl1c_get_tpd(struct atl1c_adapter *adapter, | |
1978 | enum atl1c_trans_queue type) | |
1979 | { | |
1980 | struct atl1c_tpd_ring *tpd_ring = &adapter->tpd_ring[type]; | |
1981 | struct atl1c_tpd_desc *tpd_desc; | |
1982 | u16 next_to_use = 0; | |
1983 | ||
1984 | next_to_use = tpd_ring->next_to_use; | |
1985 | if (++tpd_ring->next_to_use == tpd_ring->count) | |
1986 | tpd_ring->next_to_use = 0; | |
1987 | tpd_desc = ATL1C_TPD_DESC(tpd_ring, next_to_use); | |
1988 | memset(tpd_desc, 0, sizeof(struct atl1c_tpd_desc)); | |
1989 | return tpd_desc; | |
1990 | } | |
1991 | ||
1992 | static struct atl1c_buffer * | |
1993 | atl1c_get_tx_buffer(struct atl1c_adapter *adapter, struct atl1c_tpd_desc *tpd) | |
1994 | { | |
1995 | struct atl1c_tpd_ring *tpd_ring = adapter->tpd_ring; | |
1996 | ||
1997 | return &tpd_ring->buffer_info[tpd - | |
1998 | (struct atl1c_tpd_desc *)tpd_ring->desc]; | |
1999 | } | |
2000 | ||
2001 | /* Calculate the transmit packet descript needed*/ | |
2002 | static u16 atl1c_cal_tpd_req(const struct sk_buff *skb) | |
2003 | { | |
2004 | u16 tpd_req; | |
2005 | u16 proto_hdr_len = 0; | |
2006 | ||
2007 | tpd_req = skb_shinfo(skb)->nr_frags + 1; | |
2008 | ||
2009 | if (skb_is_gso(skb)) { | |
2010 | proto_hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); | |
2011 | if (proto_hdr_len < skb_headlen(skb)) | |
2012 | tpd_req++; | |
2013 | if (skb_shinfo(skb)->gso_type & SKB_GSO_TCPV6) | |
2014 | tpd_req++; | |
2015 | } | |
2016 | return tpd_req; | |
2017 | } | |
2018 | ||
2019 | static int atl1c_tso_csum(struct atl1c_adapter *adapter, | |
2020 | struct sk_buff *skb, | |
2021 | struct atl1c_tpd_desc **tpd, | |
2022 | enum atl1c_trans_queue type) | |
2023 | { | |
2024 | struct pci_dev *pdev = adapter->pdev; | |
2025 | u8 hdr_len; | |
2026 | u32 real_len; | |
2027 | unsigned short offload_type; | |
2028 | int err; | |
2029 | ||
2030 | if (skb_is_gso(skb)) { | |
2031 | if (skb_header_cloned(skb)) { | |
2032 | err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); | |
2033 | if (unlikely(err)) | |
2034 | return -1; | |
2035 | } | |
2036 | offload_type = skb_shinfo(skb)->gso_type; | |
2037 | ||
2038 | if (offload_type & SKB_GSO_TCPV4) { | |
2039 | real_len = (((unsigned char *)ip_hdr(skb) - skb->data) | |
2040 | + ntohs(ip_hdr(skb)->tot_len)); | |
2041 | ||
2042 | if (real_len < skb->len) | |
2043 | pskb_trim(skb, real_len); | |
2044 | ||
2045 | hdr_len = (skb_transport_offset(skb) + tcp_hdrlen(skb)); | |
2046 | if (unlikely(skb->len == hdr_len)) { | |
2047 | /* only xsum need */ | |
2048 | if (netif_msg_tx_queued(adapter)) | |
2049 | dev_warn(&pdev->dev, | |
2050 | "IPV4 tso with zero data??\n"); | |
2051 | goto check_sum; | |
2052 | } else { | |
2053 | ip_hdr(skb)->check = 0; | |
2054 | tcp_hdr(skb)->check = ~csum_tcpudp_magic( | |
2055 | ip_hdr(skb)->saddr, | |
2056 | ip_hdr(skb)->daddr, | |
2057 | 0, IPPROTO_TCP, 0); | |
2058 | (*tpd)->word1 |= 1 << TPD_IPV4_PACKET_SHIFT; | |
2059 | } | |
2060 | } | |
2061 | ||
2062 | if (offload_type & SKB_GSO_TCPV6) { | |
2063 | struct atl1c_tpd_ext_desc *etpd = | |
2064 | *(struct atl1c_tpd_ext_desc **)(tpd); | |
2065 | ||
2066 | memset(etpd, 0, sizeof(struct atl1c_tpd_ext_desc)); | |
2067 | *tpd = atl1c_get_tpd(adapter, type); | |
2068 | ipv6_hdr(skb)->payload_len = 0; | |
2069 | /* check payload == 0 byte ? */ | |
2070 | hdr_len = (skb_transport_offset(skb) + tcp_hdrlen(skb)); | |
2071 | if (unlikely(skb->len == hdr_len)) { | |
2072 | /* only xsum need */ | |
2073 | if (netif_msg_tx_queued(adapter)) | |
2074 | dev_warn(&pdev->dev, | |
2075 | "IPV6 tso with zero data??\n"); | |
2076 | goto check_sum; | |
2077 | } else | |
2078 | tcp_hdr(skb)->check = ~csum_ipv6_magic( | |
2079 | &ipv6_hdr(skb)->saddr, | |
2080 | &ipv6_hdr(skb)->daddr, | |
2081 | 0, IPPROTO_TCP, 0); | |
2082 | etpd->word1 |= 1 << TPD_LSO_EN_SHIFT; | |
2083 | etpd->word1 |= 1 << TPD_LSO_VER_SHIFT; | |
2084 | etpd->pkt_len = cpu_to_le32(skb->len); | |
2085 | (*tpd)->word1 |= 1 << TPD_LSO_VER_SHIFT; | |
2086 | } | |
2087 | ||
2088 | (*tpd)->word1 |= 1 << TPD_LSO_EN_SHIFT; | |
2089 | (*tpd)->word1 |= (skb_transport_offset(skb) & TPD_TCPHDR_OFFSET_MASK) << | |
2090 | TPD_TCPHDR_OFFSET_SHIFT; | |
2091 | (*tpd)->word1 |= (skb_shinfo(skb)->gso_size & TPD_MSS_MASK) << | |
2092 | TPD_MSS_SHIFT; | |
2093 | return 0; | |
2094 | } | |
2095 | ||
2096 | check_sum: | |
2097 | if (likely(skb->ip_summed == CHECKSUM_PARTIAL)) { | |
2098 | u8 css, cso; | |
0d0b1672 | 2099 | cso = skb_checksum_start_offset(skb); |
43250ddd JY |
2100 | |
2101 | if (unlikely(cso & 0x1)) { | |
2102 | if (netif_msg_tx_err(adapter)) | |
2103 | dev_err(&adapter->pdev->dev, | |
2104 | "payload offset should not an event number\n"); | |
2105 | return -1; | |
2106 | } else { | |
2107 | css = cso + skb->csum_offset; | |
2108 | ||
2109 | (*tpd)->word1 |= ((cso >> 1) & TPD_PLOADOFFSET_MASK) << | |
2110 | TPD_PLOADOFFSET_SHIFT; | |
2111 | (*tpd)->word1 |= ((css >> 1) & TPD_CCSUM_OFFSET_MASK) << | |
2112 | TPD_CCSUM_OFFSET_SHIFT; | |
2113 | (*tpd)->word1 |= 1 << TPD_CCSUM_EN_SHIFT; | |
2114 | } | |
2115 | } | |
2116 | return 0; | |
2117 | } | |
2118 | ||
2119 | static void atl1c_tx_map(struct atl1c_adapter *adapter, | |
2120 | struct sk_buff *skb, struct atl1c_tpd_desc *tpd, | |
2121 | enum atl1c_trans_queue type) | |
2122 | { | |
2123 | struct atl1c_tpd_desc *use_tpd = NULL; | |
2124 | struct atl1c_buffer *buffer_info = NULL; | |
2125 | u16 buf_len = skb_headlen(skb); | |
2126 | u16 map_len = 0; | |
2127 | u16 mapped_len = 0; | |
2128 | u16 hdr_len = 0; | |
2129 | u16 nr_frags; | |
2130 | u16 f; | |
2131 | int tso; | |
2132 | ||
2133 | nr_frags = skb_shinfo(skb)->nr_frags; | |
2134 | tso = (tpd->word1 >> TPD_LSO_EN_SHIFT) & TPD_LSO_EN_MASK; | |
2135 | if (tso) { | |
2136 | /* TSO */ | |
2137 | map_len = hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); | |
2138 | use_tpd = tpd; | |
2139 | ||
2140 | buffer_info = atl1c_get_tx_buffer(adapter, use_tpd); | |
2141 | buffer_info->length = map_len; | |
2142 | buffer_info->dma = pci_map_single(adapter->pdev, | |
2143 | skb->data, hdr_len, PCI_DMA_TODEVICE); | |
c6060be4 | 2144 | ATL1C_SET_BUFFER_STATE(buffer_info, ATL1C_BUFFER_BUSY); |
4b45e342 JY |
2145 | ATL1C_SET_PCIMAP_TYPE(buffer_info, ATL1C_PCIMAP_SINGLE, |
2146 | ATL1C_PCIMAP_TODEVICE); | |
43250ddd JY |
2147 | mapped_len += map_len; |
2148 | use_tpd->buffer_addr = cpu_to_le64(buffer_info->dma); | |
2149 | use_tpd->buffer_len = cpu_to_le16(buffer_info->length); | |
2150 | } | |
2151 | ||
2152 | if (mapped_len < buf_len) { | |
2153 | /* mapped_len == 0, means we should use the first tpd, | |
2154 | which is given by caller */ | |
2155 | if (mapped_len == 0) | |
2156 | use_tpd = tpd; | |
2157 | else { | |
2158 | use_tpd = atl1c_get_tpd(adapter, type); | |
43250ddd JY |
2159 | memcpy(use_tpd, tpd, sizeof(struct atl1c_tpd_desc)); |
2160 | } | |
2161 | buffer_info = atl1c_get_tx_buffer(adapter, use_tpd); | |
2162 | buffer_info->length = buf_len - mapped_len; | |
2163 | buffer_info->dma = | |
2164 | pci_map_single(adapter->pdev, skb->data + mapped_len, | |
2165 | buffer_info->length, PCI_DMA_TODEVICE); | |
c6060be4 | 2166 | ATL1C_SET_BUFFER_STATE(buffer_info, ATL1C_BUFFER_BUSY); |
4b45e342 JY |
2167 | ATL1C_SET_PCIMAP_TYPE(buffer_info, ATL1C_PCIMAP_SINGLE, |
2168 | ATL1C_PCIMAP_TODEVICE); | |
43250ddd JY |
2169 | use_tpd->buffer_addr = cpu_to_le64(buffer_info->dma); |
2170 | use_tpd->buffer_len = cpu_to_le16(buffer_info->length); | |
2171 | } | |
2172 | ||
2173 | for (f = 0; f < nr_frags; f++) { | |
2174 | struct skb_frag_struct *frag; | |
2175 | ||
2176 | frag = &skb_shinfo(skb)->frags[f]; | |
2177 | ||
2178 | use_tpd = atl1c_get_tpd(adapter, type); | |
2179 | memcpy(use_tpd, tpd, sizeof(struct atl1c_tpd_desc)); | |
2180 | ||
2181 | buffer_info = atl1c_get_tx_buffer(adapter, use_tpd); | |
2182 | buffer_info->length = frag->size; | |
2183 | buffer_info->dma = | |
2184 | pci_map_page(adapter->pdev, frag->page, | |
2185 | frag->page_offset, | |
2186 | buffer_info->length, | |
2187 | PCI_DMA_TODEVICE); | |
c6060be4 | 2188 | ATL1C_SET_BUFFER_STATE(buffer_info, ATL1C_BUFFER_BUSY); |
4b45e342 JY |
2189 | ATL1C_SET_PCIMAP_TYPE(buffer_info, ATL1C_PCIMAP_PAGE, |
2190 | ATL1C_PCIMAP_TODEVICE); | |
43250ddd JY |
2191 | use_tpd->buffer_addr = cpu_to_le64(buffer_info->dma); |
2192 | use_tpd->buffer_len = cpu_to_le16(buffer_info->length); | |
2193 | } | |
2194 | ||
2195 | /* The last tpd */ | |
2196 | use_tpd->word1 |= 1 << TPD_EOP_SHIFT; | |
2197 | /* The last buffer info contain the skb address, | |
2198 | so it will be free after unmap */ | |
2199 | buffer_info->skb = skb; | |
2200 | } | |
2201 | ||
2202 | static void atl1c_tx_queue(struct atl1c_adapter *adapter, struct sk_buff *skb, | |
2203 | struct atl1c_tpd_desc *tpd, enum atl1c_trans_queue type) | |
2204 | { | |
2205 | struct atl1c_tpd_ring *tpd_ring = &adapter->tpd_ring[type]; | |
2206 | u32 prod_data; | |
2207 | ||
2208 | AT_READ_REG(&adapter->hw, REG_MB_PRIO_PROD_IDX, &prod_data); | |
2209 | switch (type) { | |
2210 | case atl1c_trans_high: | |
2211 | prod_data &= 0xFFFF0000; | |
2212 | prod_data |= tpd_ring->next_to_use & 0xFFFF; | |
2213 | break; | |
2214 | case atl1c_trans_normal: | |
2215 | prod_data &= 0x0000FFFF; | |
2216 | prod_data |= (tpd_ring->next_to_use & 0xFFFF) << 16; | |
2217 | break; | |
2218 | default: | |
2219 | break; | |
2220 | } | |
2221 | wmb(); | |
2222 | AT_WRITE_REG(&adapter->hw, REG_MB_PRIO_PROD_IDX, prod_data); | |
2223 | } | |
2224 | ||
61357325 SH |
2225 | static netdev_tx_t atl1c_xmit_frame(struct sk_buff *skb, |
2226 | struct net_device *netdev) | |
43250ddd JY |
2227 | { |
2228 | struct atl1c_adapter *adapter = netdev_priv(netdev); | |
2229 | unsigned long flags; | |
2230 | u16 tpd_req = 1; | |
2231 | struct atl1c_tpd_desc *tpd; | |
2232 | enum atl1c_trans_queue type = atl1c_trans_normal; | |
2233 | ||
2234 | if (test_bit(__AT_DOWN, &adapter->flags)) { | |
2235 | dev_kfree_skb_any(skb); | |
2236 | return NETDEV_TX_OK; | |
2237 | } | |
2238 | ||
2239 | tpd_req = atl1c_cal_tpd_req(skb); | |
2240 | if (!spin_trylock_irqsave(&adapter->tx_lock, flags)) { | |
2241 | if (netif_msg_pktdata(adapter)) | |
2242 | dev_info(&adapter->pdev->dev, "tx locked\n"); | |
2243 | return NETDEV_TX_LOCKED; | |
2244 | } | |
2245 | if (skb->mark == 0x01) | |
2246 | type = atl1c_trans_high; | |
2247 | else | |
2248 | type = atl1c_trans_normal; | |
2249 | ||
2250 | if (atl1c_tpd_avail(adapter, type) < tpd_req) { | |
2251 | /* no enough descriptor, just stop queue */ | |
2252 | netif_stop_queue(netdev); | |
2253 | spin_unlock_irqrestore(&adapter->tx_lock, flags); | |
2254 | return NETDEV_TX_BUSY; | |
2255 | } | |
2256 | ||
2257 | tpd = atl1c_get_tpd(adapter, type); | |
2258 | ||
2259 | /* do TSO and check sum */ | |
2260 | if (atl1c_tso_csum(adapter, skb, &tpd, type) != 0) { | |
2261 | spin_unlock_irqrestore(&adapter->tx_lock, flags); | |
2262 | dev_kfree_skb_any(skb); | |
2263 | return NETDEV_TX_OK; | |
2264 | } | |
2265 | ||
eab6d18d | 2266 | if (unlikely(vlan_tx_tag_present(skb))) { |
43250ddd JY |
2267 | u16 vlan = vlan_tx_tag_get(skb); |
2268 | __le16 tag; | |
2269 | ||
2270 | vlan = cpu_to_le16(vlan); | |
2271 | AT_VLAN_TO_TAG(vlan, tag); | |
2272 | tpd->word1 |= 1 << TPD_INS_VTAG_SHIFT; | |
2273 | tpd->vlan_tag = tag; | |
2274 | } | |
2275 | ||
2276 | if (skb_network_offset(skb) != ETH_HLEN) | |
2277 | tpd->word1 |= 1 << TPD_ETH_TYPE_SHIFT; /* Ethernet frame */ | |
2278 | ||
2279 | atl1c_tx_map(adapter, skb, tpd, type); | |
2280 | atl1c_tx_queue(adapter, skb, tpd, type); | |
2281 | ||
43250ddd JY |
2282 | spin_unlock_irqrestore(&adapter->tx_lock, flags); |
2283 | return NETDEV_TX_OK; | |
2284 | } | |
2285 | ||
2286 | static void atl1c_free_irq(struct atl1c_adapter *adapter) | |
2287 | { | |
2288 | struct net_device *netdev = adapter->netdev; | |
2289 | ||
2290 | free_irq(adapter->pdev->irq, netdev); | |
2291 | ||
2292 | if (adapter->have_msi) | |
2293 | pci_disable_msi(adapter->pdev); | |
2294 | } | |
2295 | ||
2296 | static int atl1c_request_irq(struct atl1c_adapter *adapter) | |
2297 | { | |
2298 | struct pci_dev *pdev = adapter->pdev; | |
2299 | struct net_device *netdev = adapter->netdev; | |
2300 | int flags = 0; | |
2301 | int err = 0; | |
2302 | ||
2303 | adapter->have_msi = true; | |
2304 | err = pci_enable_msi(adapter->pdev); | |
2305 | if (err) { | |
2306 | if (netif_msg_ifup(adapter)) | |
2307 | dev_err(&pdev->dev, | |
2308 | "Unable to allocate MSI interrupt Error: %d\n", | |
2309 | err); | |
2310 | adapter->have_msi = false; | |
2311 | } else | |
2312 | netdev->irq = pdev->irq; | |
2313 | ||
2314 | if (!adapter->have_msi) | |
2315 | flags |= IRQF_SHARED; | |
9aff7e92 | 2316 | err = request_irq(adapter->pdev->irq, atl1c_intr, flags, |
43250ddd JY |
2317 | netdev->name, netdev); |
2318 | if (err) { | |
2319 | if (netif_msg_ifup(adapter)) | |
2320 | dev_err(&pdev->dev, | |
2321 | "Unable to allocate interrupt Error: %d\n", | |
2322 | err); | |
2323 | if (adapter->have_msi) | |
2324 | pci_disable_msi(adapter->pdev); | |
2325 | return err; | |
2326 | } | |
2327 | if (netif_msg_ifup(adapter)) | |
2328 | dev_dbg(&pdev->dev, "atl1c_request_irq OK\n"); | |
2329 | return err; | |
2330 | } | |
2331 | ||
0fb1e54e | 2332 | static int atl1c_up(struct atl1c_adapter *adapter) |
43250ddd JY |
2333 | { |
2334 | struct net_device *netdev = adapter->netdev; | |
2335 | int num; | |
2336 | int err; | |
2337 | int i; | |
2338 | ||
2339 | netif_carrier_off(netdev); | |
2340 | atl1c_init_ring_ptrs(adapter); | |
2341 | atl1c_set_multi(netdev); | |
2342 | atl1c_restore_vlan(adapter); | |
2343 | ||
2344 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
2345 | num = atl1c_alloc_rx_buffer(adapter, i); | |
2346 | if (unlikely(num == 0)) { | |
2347 | err = -ENOMEM; | |
2348 | goto err_alloc_rx; | |
2349 | } | |
2350 | } | |
2351 | ||
2352 | if (atl1c_configure(adapter)) { | |
2353 | err = -EIO; | |
2354 | goto err_up; | |
2355 | } | |
2356 | ||
2357 | err = atl1c_request_irq(adapter); | |
2358 | if (unlikely(err)) | |
2359 | goto err_up; | |
2360 | ||
2361 | clear_bit(__AT_DOWN, &adapter->flags); | |
2362 | napi_enable(&adapter->napi); | |
2363 | atl1c_irq_enable(adapter); | |
2364 | atl1c_check_link_status(adapter); | |
2365 | netif_start_queue(netdev); | |
2366 | return err; | |
2367 | ||
2368 | err_up: | |
2369 | err_alloc_rx: | |
2370 | atl1c_clean_rx_ring(adapter); | |
2371 | return err; | |
2372 | } | |
2373 | ||
0fb1e54e | 2374 | static void atl1c_down(struct atl1c_adapter *adapter) |
43250ddd JY |
2375 | { |
2376 | struct net_device *netdev = adapter->netdev; | |
2377 | ||
2378 | atl1c_del_timer(adapter); | |
cb190546 | 2379 | adapter->work_event = 0; /* clear all event */ |
43250ddd JY |
2380 | /* signal that we're down so the interrupt handler does not |
2381 | * reschedule our watchdog timer */ | |
2382 | set_bit(__AT_DOWN, &adapter->flags); | |
2383 | netif_carrier_off(netdev); | |
2384 | napi_disable(&adapter->napi); | |
2385 | atl1c_irq_disable(adapter); | |
2386 | atl1c_free_irq(adapter); | |
43250ddd JY |
2387 | /* reset MAC to disable all RX/TX */ |
2388 | atl1c_reset_mac(&adapter->hw); | |
2389 | msleep(1); | |
2390 | ||
2391 | adapter->link_speed = SPEED_0; | |
2392 | adapter->link_duplex = -1; | |
2393 | atl1c_clean_tx_ring(adapter, atl1c_trans_normal); | |
2394 | atl1c_clean_tx_ring(adapter, atl1c_trans_high); | |
2395 | atl1c_clean_rx_ring(adapter); | |
2396 | } | |
2397 | ||
2398 | /* | |
2399 | * atl1c_open - Called when a network interface is made active | |
2400 | * @netdev: network interface device structure | |
2401 | * | |
2402 | * Returns 0 on success, negative value on failure | |
2403 | * | |
2404 | * The open entry point is called when a network interface is made | |
2405 | * active by the system (IFF_UP). At this point all resources needed | |
2406 | * for transmit and receive operations are allocated, the interrupt | |
2407 | * handler is registered with the OS, the watchdog timer is started, | |
2408 | * and the stack is notified that the interface is ready. | |
2409 | */ | |
2410 | static int atl1c_open(struct net_device *netdev) | |
2411 | { | |
2412 | struct atl1c_adapter *adapter = netdev_priv(netdev); | |
2413 | int err; | |
2414 | ||
2415 | /* disallow open during test */ | |
2416 | if (test_bit(__AT_TESTING, &adapter->flags)) | |
2417 | return -EBUSY; | |
2418 | ||
2419 | /* allocate rx/tx dma buffer & descriptors */ | |
2420 | err = atl1c_setup_ring_resources(adapter); | |
2421 | if (unlikely(err)) | |
2422 | return err; | |
2423 | ||
2424 | err = atl1c_up(adapter); | |
2425 | if (unlikely(err)) | |
2426 | goto err_up; | |
2427 | ||
2428 | if (adapter->hw.ctrl_flags & ATL1C_FPGA_VERSION) { | |
2429 | u32 phy_data; | |
2430 | ||
2431 | AT_READ_REG(&adapter->hw, REG_MDIO_CTRL, &phy_data); | |
2432 | phy_data |= MDIO_AP_EN; | |
2433 | AT_WRITE_REG(&adapter->hw, REG_MDIO_CTRL, phy_data); | |
2434 | } | |
2435 | return 0; | |
2436 | ||
2437 | err_up: | |
2438 | atl1c_free_irq(adapter); | |
2439 | atl1c_free_ring_resources(adapter); | |
2440 | atl1c_reset_mac(&adapter->hw); | |
2441 | return err; | |
2442 | } | |
2443 | ||
2444 | /* | |
2445 | * atl1c_close - Disables a network interface | |
2446 | * @netdev: network interface device structure | |
2447 | * | |
2448 | * Returns 0, this is not allowed to fail | |
2449 | * | |
2450 | * The close entry point is called when an interface is de-activated | |
2451 | * by the OS. The hardware is still under the drivers control, but | |
2452 | * needs to be disabled. A global MAC reset is issued to stop the | |
2453 | * hardware, and all transmit and receive resources are freed. | |
2454 | */ | |
2455 | static int atl1c_close(struct net_device *netdev) | |
2456 | { | |
2457 | struct atl1c_adapter *adapter = netdev_priv(netdev); | |
2458 | ||
2459 | WARN_ON(test_bit(__AT_RESETTING, &adapter->flags)); | |
2460 | atl1c_down(adapter); | |
2461 | atl1c_free_ring_resources(adapter); | |
2462 | return 0; | |
2463 | } | |
2464 | ||
762e3023 | 2465 | static int atl1c_suspend(struct device *dev) |
43250ddd | 2466 | { |
762e3023 | 2467 | struct pci_dev *pdev = to_pci_dev(dev); |
43250ddd JY |
2468 | struct net_device *netdev = pci_get_drvdata(pdev); |
2469 | struct atl1c_adapter *adapter = netdev_priv(netdev); | |
2470 | struct atl1c_hw *hw = &adapter->hw; | |
8f574b35 JY |
2471 | u32 mac_ctrl_data = 0; |
2472 | u32 master_ctrl_data = 0; | |
55865c66 | 2473 | u32 wol_ctrl_data = 0; |
8f574b35 | 2474 | u16 mii_intr_status_data = 0; |
43250ddd | 2475 | u32 wufc = adapter->wol; |
43250ddd | 2476 | |
8f574b35 | 2477 | atl1c_disable_l0s_l1(hw); |
43250ddd JY |
2478 | if (netif_running(netdev)) { |
2479 | WARN_ON(test_bit(__AT_RESETTING, &adapter->flags)); | |
2480 | atl1c_down(adapter); | |
2481 | } | |
2482 | netif_device_detach(netdev); | |
8f574b35 JY |
2483 | |
2484 | if (wufc) | |
2485 | if (atl1c_phy_power_saving(hw) != 0) | |
2486 | dev_dbg(&pdev->dev, "phy power saving failed"); | |
2487 | ||
2488 | AT_READ_REG(hw, REG_MASTER_CTRL, &master_ctrl_data); | |
2489 | AT_READ_REG(hw, REG_MAC_CTRL, &mac_ctrl_data); | |
2490 | ||
2491 | master_ctrl_data &= ~MASTER_CTRL_CLK_SEL_DIS; | |
2492 | mac_ctrl_data &= ~(MAC_CTRL_PRMLEN_MASK << MAC_CTRL_PRMLEN_SHIFT); | |
2493 | mac_ctrl_data |= (((u32)adapter->hw.preamble_len & | |
2494 | MAC_CTRL_PRMLEN_MASK) << | |
2495 | MAC_CTRL_PRMLEN_SHIFT); | |
2496 | mac_ctrl_data &= ~(MAC_CTRL_SPEED_MASK << MAC_CTRL_SPEED_SHIFT); | |
2497 | mac_ctrl_data &= ~MAC_CTRL_DUPLX; | |
2498 | ||
43250ddd | 2499 | if (wufc) { |
8f574b35 JY |
2500 | mac_ctrl_data |= MAC_CTRL_RX_EN; |
2501 | if (adapter->link_speed == SPEED_1000 || | |
2502 | adapter->link_speed == SPEED_0) { | |
2503 | mac_ctrl_data |= atl1c_mac_speed_1000 << | |
2504 | MAC_CTRL_SPEED_SHIFT; | |
2505 | mac_ctrl_data |= MAC_CTRL_DUPLX; | |
2506 | } else | |
2507 | mac_ctrl_data |= atl1c_mac_speed_10_100 << | |
2508 | MAC_CTRL_SPEED_SHIFT; | |
2509 | ||
2510 | if (adapter->link_duplex == DUPLEX_FULL) | |
2511 | mac_ctrl_data |= MAC_CTRL_DUPLX; | |
2512 | ||
43250ddd JY |
2513 | /* turn on magic packet wol */ |
2514 | if (wufc & AT_WUFC_MAG) | |
8f574b35 | 2515 | wol_ctrl_data |= WOL_MAGIC_EN | WOL_MAGIC_PME_EN; |
43250ddd JY |
2516 | |
2517 | if (wufc & AT_WUFC_LNKC) { | |
43250ddd JY |
2518 | wol_ctrl_data |= WOL_LINK_CHG_EN | WOL_LINK_CHG_PME_EN; |
2519 | /* only link up can wake up */ | |
2520 | if (atl1c_write_phy_reg(hw, MII_IER, IER_LINK_UP) != 0) { | |
8f574b35 JY |
2521 | dev_dbg(&pdev->dev, "%s: read write phy " |
2522 | "register failed.\n", | |
2523 | atl1c_driver_name); | |
43250ddd JY |
2524 | } |
2525 | } | |
2526 | /* clear phy interrupt */ | |
2527 | atl1c_read_phy_reg(hw, MII_ISR, &mii_intr_status_data); | |
2528 | /* Config MAC Ctrl register */ | |
46facce9 | 2529 | __atl1c_vlan_mode(netdev->features, &mac_ctrl_data); |
43250ddd JY |
2530 | |
2531 | /* magic packet maybe Broadcast&multicast&Unicast frame */ | |
2532 | if (wufc & AT_WUFC_MAG) | |
2533 | mac_ctrl_data |= MAC_CTRL_BC_EN; | |
2534 | ||
8f574b35 JY |
2535 | dev_dbg(&pdev->dev, |
2536 | "%s: suspend MAC=0x%x\n", | |
2537 | atl1c_driver_name, mac_ctrl_data); | |
43250ddd JY |
2538 | AT_WRITE_REG(hw, REG_MASTER_CTRL, master_ctrl_data); |
2539 | AT_WRITE_REG(hw, REG_WOL_CTRL, wol_ctrl_data); | |
2540 | AT_WRITE_REG(hw, REG_MAC_CTRL, mac_ctrl_data); | |
2541 | ||
8f574b35 JY |
2542 | AT_WRITE_REG(hw, REG_GPHY_CTRL, GPHY_CTRL_DEFAULT | |
2543 | GPHY_CTRL_EXT_RESET); | |
8f574b35 JY |
2544 | } else { |
2545 | AT_WRITE_REG(hw, REG_GPHY_CTRL, GPHY_CTRL_POWER_SAVING); | |
2546 | master_ctrl_data |= MASTER_CTRL_CLK_SEL_DIS; | |
2547 | mac_ctrl_data |= atl1c_mac_speed_10_100 << MAC_CTRL_SPEED_SHIFT; | |
2548 | mac_ctrl_data |= MAC_CTRL_DUPLX; | |
2549 | AT_WRITE_REG(hw, REG_MASTER_CTRL, master_ctrl_data); | |
2550 | AT_WRITE_REG(hw, REG_MAC_CTRL, mac_ctrl_data); | |
2551 | AT_WRITE_REG(hw, REG_WOL_CTRL, 0); | |
2552 | hw->phy_configured = false; /* re-init PHY when resume */ | |
43250ddd | 2553 | } |
43250ddd | 2554 | |
43250ddd JY |
2555 | return 0; |
2556 | } | |
2557 | ||
d187c1aa | 2558 | #ifdef CONFIG_PM_SLEEP |
762e3023 | 2559 | static int atl1c_resume(struct device *dev) |
43250ddd | 2560 | { |
762e3023 | 2561 | struct pci_dev *pdev = to_pci_dev(dev); |
43250ddd JY |
2562 | struct net_device *netdev = pci_get_drvdata(pdev); |
2563 | struct atl1c_adapter *adapter = netdev_priv(netdev); | |
2564 | ||
43250ddd | 2565 | AT_WRITE_REG(&adapter->hw, REG_WOL_CTRL, 0); |
8f574b35 JY |
2566 | atl1c_reset_pcie(&adapter->hw, ATL1C_PCIE_L0S_L1_DISABLE | |
2567 | ATL1C_PCIE_PHY_RESET); | |
43250ddd JY |
2568 | |
2569 | atl1c_phy_reset(&adapter->hw); | |
2570 | atl1c_reset_mac(&adapter->hw); | |
8f574b35 JY |
2571 | atl1c_phy_init(&adapter->hw); |
2572 | ||
2573 | #if 0 | |
2574 | AT_READ_REG(&adapter->hw, REG_PM_CTRLSTAT, &pm_data); | |
2575 | pm_data &= ~PM_CTRLSTAT_PME_EN; | |
2576 | AT_WRITE_REG(&adapter->hw, REG_PM_CTRLSTAT, pm_data); | |
2577 | #endif | |
2578 | ||
43250ddd JY |
2579 | netif_device_attach(netdev); |
2580 | if (netif_running(netdev)) | |
2581 | atl1c_up(adapter); | |
2582 | ||
2583 | return 0; | |
2584 | } | |
d187c1aa | 2585 | #endif |
43250ddd JY |
2586 | |
2587 | static void atl1c_shutdown(struct pci_dev *pdev) | |
2588 | { | |
762e3023 RW |
2589 | struct net_device *netdev = pci_get_drvdata(pdev); |
2590 | struct atl1c_adapter *adapter = netdev_priv(netdev); | |
2591 | ||
2592 | atl1c_suspend(&pdev->dev); | |
2593 | pci_wake_from_d3(pdev, adapter->wol); | |
2594 | pci_set_power_state(pdev, PCI_D3hot); | |
43250ddd JY |
2595 | } |
2596 | ||
2597 | static const struct net_device_ops atl1c_netdev_ops = { | |
2598 | .ndo_open = atl1c_open, | |
2599 | .ndo_stop = atl1c_close, | |
2600 | .ndo_validate_addr = eth_validate_addr, | |
2601 | .ndo_start_xmit = atl1c_xmit_frame, | |
46facce9 | 2602 | .ndo_set_mac_address = atl1c_set_mac_addr, |
43250ddd JY |
2603 | .ndo_set_multicast_list = atl1c_set_multi, |
2604 | .ndo_change_mtu = atl1c_change_mtu, | |
782d640a | 2605 | .ndo_fix_features = atl1c_fix_features, |
46facce9 | 2606 | .ndo_set_features = atl1c_set_features, |
43250ddd JY |
2607 | .ndo_do_ioctl = atl1c_ioctl, |
2608 | .ndo_tx_timeout = atl1c_tx_timeout, | |
2609 | .ndo_get_stats = atl1c_get_stats, | |
43250ddd JY |
2610 | #ifdef CONFIG_NET_POLL_CONTROLLER |
2611 | .ndo_poll_controller = atl1c_netpoll, | |
2612 | #endif | |
2613 | }; | |
2614 | ||
2615 | static int atl1c_init_netdev(struct net_device *netdev, struct pci_dev *pdev) | |
2616 | { | |
2617 | SET_NETDEV_DEV(netdev, &pdev->dev); | |
2618 | pci_set_drvdata(pdev, netdev); | |
2619 | ||
2620 | netdev->irq = pdev->irq; | |
2621 | netdev->netdev_ops = &atl1c_netdev_ops; | |
2622 | netdev->watchdog_timeo = AT_TX_WATCHDOG; | |
2623 | atl1c_set_ethtool_ops(netdev); | |
2624 | ||
2625 | /* TODO: add when ready */ | |
782d640a | 2626 | netdev->hw_features = NETIF_F_SG | |
43250ddd | 2627 | NETIF_F_HW_CSUM | |
46facce9 | 2628 | NETIF_F_HW_VLAN_RX | |
43250ddd JY |
2629 | NETIF_F_TSO | |
2630 | NETIF_F_TSO6; | |
782d640a | 2631 | netdev->features = netdev->hw_features | |
46facce9 | 2632 | NETIF_F_HW_VLAN_TX; |
43250ddd JY |
2633 | return 0; |
2634 | } | |
2635 | ||
2636 | /* | |
2637 | * atl1c_probe - Device Initialization Routine | |
2638 | * @pdev: PCI device information struct | |
2639 | * @ent: entry in atl1c_pci_tbl | |
2640 | * | |
2641 | * Returns 0 on success, negative on failure | |
2642 | * | |
2643 | * atl1c_probe initializes an adapter identified by a pci_dev structure. | |
2644 | * The OS initialization, configuring of the adapter private structure, | |
2645 | * and a hardware reset occur. | |
2646 | */ | |
2647 | static int __devinit atl1c_probe(struct pci_dev *pdev, | |
2648 | const struct pci_device_id *ent) | |
2649 | { | |
2650 | struct net_device *netdev; | |
2651 | struct atl1c_adapter *adapter; | |
2652 | static int cards_found; | |
2653 | ||
2654 | int err = 0; | |
2655 | ||
2656 | /* enable device (incl. PCI PM wakeup and hotplug setup) */ | |
2657 | err = pci_enable_device_mem(pdev); | |
2658 | if (err) { | |
2659 | dev_err(&pdev->dev, "cannot enable PCI device\n"); | |
2660 | return err; | |
2661 | } | |
2662 | ||
2663 | /* | |
2664 | * The atl1c chip can DMA to 64-bit addresses, but it uses a single | |
2665 | * shared register for the high 32 bits, so only a single, aligned, | |
2666 | * 4 GB physical address range can be used at a time. | |
2667 | * | |
2668 | * Supporting 64-bit DMA on this hardware is more trouble than it's | |
2669 | * worth. It is far easier to limit to 32-bit DMA than update | |
2670 | * various kernel subsystems to support the mechanics required by a | |
2671 | * fixed-high-32-bit system. | |
2672 | */ | |
e930438c YH |
2673 | if ((pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) || |
2674 | (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)) { | |
43250ddd JY |
2675 | dev_err(&pdev->dev, "No usable DMA configuration,aborting\n"); |
2676 | goto err_dma; | |
2677 | } | |
2678 | ||
2679 | err = pci_request_regions(pdev, atl1c_driver_name); | |
2680 | if (err) { | |
2681 | dev_err(&pdev->dev, "cannot obtain PCI resources\n"); | |
2682 | goto err_pci_reg; | |
2683 | } | |
2684 | ||
2685 | pci_set_master(pdev); | |
2686 | ||
2687 | netdev = alloc_etherdev(sizeof(struct atl1c_adapter)); | |
2688 | if (netdev == NULL) { | |
2689 | err = -ENOMEM; | |
2690 | dev_err(&pdev->dev, "etherdev alloc failed\n"); | |
2691 | goto err_alloc_etherdev; | |
2692 | } | |
2693 | ||
2694 | err = atl1c_init_netdev(netdev, pdev); | |
2695 | if (err) { | |
2696 | dev_err(&pdev->dev, "init netdevice failed\n"); | |
2697 | goto err_init_netdev; | |
2698 | } | |
2699 | adapter = netdev_priv(netdev); | |
2700 | adapter->bd_number = cards_found; | |
2701 | adapter->netdev = netdev; | |
2702 | adapter->pdev = pdev; | |
2703 | adapter->hw.adapter = adapter; | |
2704 | adapter->msg_enable = netif_msg_init(-1, atl1c_default_msg); | |
2705 | adapter->hw.hw_addr = ioremap(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0)); | |
2706 | if (!adapter->hw.hw_addr) { | |
2707 | err = -EIO; | |
2708 | dev_err(&pdev->dev, "cannot map device registers\n"); | |
2709 | goto err_ioremap; | |
2710 | } | |
2711 | netdev->base_addr = (unsigned long)adapter->hw.hw_addr; | |
2712 | ||
2713 | /* init mii data */ | |
2714 | adapter->mii.dev = netdev; | |
2715 | adapter->mii.mdio_read = atl1c_mdio_read; | |
2716 | adapter->mii.mdio_write = atl1c_mdio_write; | |
2717 | adapter->mii.phy_id_mask = 0x1f; | |
2718 | adapter->mii.reg_num_mask = MDIO_REG_ADDR_MASK; | |
2719 | netif_napi_add(netdev, &adapter->napi, atl1c_clean, 64); | |
2720 | setup_timer(&adapter->phy_config_timer, atl1c_phy_config, | |
2721 | (unsigned long)adapter); | |
2722 | /* setup the private structure */ | |
2723 | err = atl1c_sw_init(adapter); | |
2724 | if (err) { | |
2725 | dev_err(&pdev->dev, "net device private data init failed\n"); | |
2726 | goto err_sw_init; | |
2727 | } | |
2728 | atl1c_reset_pcie(&adapter->hw, ATL1C_PCIE_L0S_L1_DISABLE | | |
2729 | ATL1C_PCIE_PHY_RESET); | |
2730 | ||
2731 | /* Init GPHY as early as possible due to power saving issue */ | |
2732 | atl1c_phy_reset(&adapter->hw); | |
2733 | ||
2734 | err = atl1c_reset_mac(&adapter->hw); | |
2735 | if (err) { | |
2736 | err = -EIO; | |
2737 | goto err_reset; | |
2738 | } | |
2739 | ||
43250ddd JY |
2740 | /* reset the controller to |
2741 | * put the device in a known good starting state */ | |
2742 | err = atl1c_phy_init(&adapter->hw); | |
2743 | if (err) { | |
2744 | err = -EIO; | |
2745 | goto err_reset; | |
2746 | } | |
2747 | if (atl1c_read_mac_addr(&adapter->hw) != 0) { | |
2748 | err = -EIO; | |
2749 | dev_err(&pdev->dev, "get mac address failed\n"); | |
2750 | goto err_eeprom; | |
2751 | } | |
2752 | memcpy(netdev->dev_addr, adapter->hw.mac_addr, netdev->addr_len); | |
2753 | memcpy(netdev->perm_addr, adapter->hw.mac_addr, netdev->addr_len); | |
2754 | if (netif_msg_probe(adapter)) | |
82991172 | 2755 | dev_dbg(&pdev->dev, "mac address : %pM\n", |
2756 | adapter->hw.mac_addr); | |
43250ddd JY |
2757 | |
2758 | atl1c_hw_set_mac_addr(&adapter->hw); | |
cb190546 JY |
2759 | INIT_WORK(&adapter->common_task, atl1c_common_task); |
2760 | adapter->work_event = 0; | |
43250ddd JY |
2761 | err = register_netdev(netdev); |
2762 | if (err) { | |
2763 | dev_err(&pdev->dev, "register netdevice failed\n"); | |
2764 | goto err_register; | |
2765 | } | |
2766 | ||
2767 | if (netif_msg_probe(adapter)) | |
2768 | dev_info(&pdev->dev, "version %s\n", ATL1C_DRV_VERSION); | |
2769 | cards_found++; | |
2770 | return 0; | |
2771 | ||
2772 | err_reset: | |
2773 | err_register: | |
2774 | err_sw_init: | |
2775 | err_eeprom: | |
2776 | iounmap(adapter->hw.hw_addr); | |
2777 | err_init_netdev: | |
2778 | err_ioremap: | |
2779 | free_netdev(netdev); | |
2780 | err_alloc_etherdev: | |
2781 | pci_release_regions(pdev); | |
2782 | err_pci_reg: | |
2783 | err_dma: | |
2784 | pci_disable_device(pdev); | |
2785 | return err; | |
2786 | } | |
2787 | ||
2788 | /* | |
2789 | * atl1c_remove - Device Removal Routine | |
2790 | * @pdev: PCI device information struct | |
2791 | * | |
2792 | * atl1c_remove is called by the PCI subsystem to alert the driver | |
2793 | * that it should release a PCI device. The could be caused by a | |
2794 | * Hot-Plug event, or because the driver is going to be removed from | |
2795 | * memory. | |
2796 | */ | |
2797 | static void __devexit atl1c_remove(struct pci_dev *pdev) | |
2798 | { | |
2799 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2800 | struct atl1c_adapter *adapter = netdev_priv(netdev); | |
2801 | ||
2802 | unregister_netdev(netdev); | |
2803 | atl1c_phy_disable(&adapter->hw); | |
2804 | ||
2805 | iounmap(adapter->hw.hw_addr); | |
2806 | ||
2807 | pci_release_regions(pdev); | |
2808 | pci_disable_device(pdev); | |
2809 | free_netdev(netdev); | |
2810 | } | |
2811 | ||
2812 | /* | |
2813 | * atl1c_io_error_detected - called when PCI error is detected | |
2814 | * @pdev: Pointer to PCI device | |
2815 | * @state: The current pci connection state | |
2816 | * | |
2817 | * This function is called after a PCI bus error affecting | |
2818 | * this device has been detected. | |
2819 | */ | |
2820 | static pci_ers_result_t atl1c_io_error_detected(struct pci_dev *pdev, | |
2821 | pci_channel_state_t state) | |
2822 | { | |
2823 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2824 | struct atl1c_adapter *adapter = netdev_priv(netdev); | |
2825 | ||
2826 | netif_device_detach(netdev); | |
2827 | ||
005fb4f0 DN |
2828 | if (state == pci_channel_io_perm_failure) |
2829 | return PCI_ERS_RESULT_DISCONNECT; | |
2830 | ||
43250ddd JY |
2831 | if (netif_running(netdev)) |
2832 | atl1c_down(adapter); | |
2833 | ||
2834 | pci_disable_device(pdev); | |
2835 | ||
2836 | /* Request a slot slot reset. */ | |
2837 | return PCI_ERS_RESULT_NEED_RESET; | |
2838 | } | |
2839 | ||
2840 | /* | |
2841 | * atl1c_io_slot_reset - called after the pci bus has been reset. | |
2842 | * @pdev: Pointer to PCI device | |
2843 | * | |
2844 | * Restart the card from scratch, as if from a cold-boot. Implementation | |
2845 | * resembles the first-half of the e1000_resume routine. | |
2846 | */ | |
2847 | static pci_ers_result_t atl1c_io_slot_reset(struct pci_dev *pdev) | |
2848 | { | |
2849 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2850 | struct atl1c_adapter *adapter = netdev_priv(netdev); | |
2851 | ||
2852 | if (pci_enable_device(pdev)) { | |
2853 | if (netif_msg_hw(adapter)) | |
2854 | dev_err(&pdev->dev, | |
2855 | "Cannot re-enable PCI device after reset\n"); | |
2856 | return PCI_ERS_RESULT_DISCONNECT; | |
2857 | } | |
2858 | pci_set_master(pdev); | |
2859 | ||
2860 | pci_enable_wake(pdev, PCI_D3hot, 0); | |
2861 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
2862 | ||
2863 | atl1c_reset_mac(&adapter->hw); | |
2864 | ||
2865 | return PCI_ERS_RESULT_RECOVERED; | |
2866 | } | |
2867 | ||
2868 | /* | |
2869 | * atl1c_io_resume - called when traffic can start flowing again. | |
2870 | * @pdev: Pointer to PCI device | |
2871 | * | |
2872 | * This callback is called when the error recovery driver tells us that | |
2873 | * its OK to resume normal operation. Implementation resembles the | |
2874 | * second-half of the atl1c_resume routine. | |
2875 | */ | |
2876 | static void atl1c_io_resume(struct pci_dev *pdev) | |
2877 | { | |
2878 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2879 | struct atl1c_adapter *adapter = netdev_priv(netdev); | |
2880 | ||
2881 | if (netif_running(netdev)) { | |
2882 | if (atl1c_up(adapter)) { | |
2883 | if (netif_msg_hw(adapter)) | |
2884 | dev_err(&pdev->dev, | |
2885 | "Cannot bring device back up after reset\n"); | |
2886 | return; | |
2887 | } | |
2888 | } | |
2889 | ||
2890 | netif_device_attach(netdev); | |
2891 | } | |
2892 | ||
2893 | static struct pci_error_handlers atl1c_err_handler = { | |
2894 | .error_detected = atl1c_io_error_detected, | |
2895 | .slot_reset = atl1c_io_slot_reset, | |
2896 | .resume = atl1c_io_resume, | |
2897 | }; | |
2898 | ||
762e3023 RW |
2899 | static SIMPLE_DEV_PM_OPS(atl1c_pm_ops, atl1c_suspend, atl1c_resume); |
2900 | ||
43250ddd JY |
2901 | static struct pci_driver atl1c_driver = { |
2902 | .name = atl1c_driver_name, | |
2903 | .id_table = atl1c_pci_tbl, | |
2904 | .probe = atl1c_probe, | |
2905 | .remove = __devexit_p(atl1c_remove), | |
43250ddd | 2906 | .shutdown = atl1c_shutdown, |
762e3023 RW |
2907 | .err_handler = &atl1c_err_handler, |
2908 | .driver.pm = &atl1c_pm_ops, | |
43250ddd JY |
2909 | }; |
2910 | ||
2911 | /* | |
2912 | * atl1c_init_module - Driver Registration Routine | |
2913 | * | |
2914 | * atl1c_init_module is the first routine called when the driver is | |
2915 | * loaded. All it does is register with the PCI subsystem. | |
2916 | */ | |
2917 | static int __init atl1c_init_module(void) | |
2918 | { | |
2919 | return pci_register_driver(&atl1c_driver); | |
2920 | } | |
2921 | ||
2922 | /* | |
2923 | * atl1c_exit_module - Driver Exit Cleanup Routine | |
2924 | * | |
2925 | * atl1c_exit_module is called just before the driver is removed | |
2926 | * from memory. | |
2927 | */ | |
2928 | static void __exit atl1c_exit_module(void) | |
2929 | { | |
2930 | pci_unregister_driver(&atl1c_driver); | |
2931 | } | |
2932 | ||
2933 | module_init(atl1c_init_module); | |
2934 | module_exit(atl1c_exit_module); |