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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; | |
496c185c | 27 | |
43250ddd JY |
28 | /* |
29 | * atl1c_pci_tbl - PCI Device ID Table | |
30 | * | |
31 | * Wildcard entries (PCI_ANY_ID) should come last | |
32 | * Last entry must be all 0s | |
33 | * | |
34 | * { Vendor ID, Device ID, SubVendor ID, SubDevice ID, | |
35 | * Class, Class Mask, private data (not used) } | |
36 | */ | |
a3aa1884 | 37 | static DEFINE_PCI_DEVICE_TABLE(atl1c_pci_tbl) = { |
43250ddd JY |
38 | {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC, PCI_DEVICE_ID_ATTANSIC_L1C)}, |
39 | {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC, PCI_DEVICE_ID_ATTANSIC_L2C)}, | |
496c185c LR |
40 | {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC, PCI_DEVICE_ID_ATHEROS_L2C_B)}, |
41 | {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC, PCI_DEVICE_ID_ATHEROS_L2C_B2)}, | |
42 | {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC, PCI_DEVICE_ID_ATHEROS_L1D)}, | |
94dde7e4 | 43 | {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC, PCI_DEVICE_ID_ATHEROS_L1D_2_0)}, |
43250ddd JY |
44 | /* required last entry */ |
45 | { 0 } | |
46 | }; | |
47 | MODULE_DEVICE_TABLE(pci, atl1c_pci_tbl); | |
48 | ||
70c9fbd3 HX |
49 | MODULE_AUTHOR("Jie Yang"); |
50 | MODULE_AUTHOR("Qualcomm Atheros Inc., <nic-devel@qualcomm.com>"); | |
51 | MODULE_DESCRIPTION("Qualcom Atheros 100/1000M Ethernet Network Driver"); | |
43250ddd JY |
52 | MODULE_LICENSE("GPL"); |
53 | MODULE_VERSION(ATL1C_DRV_VERSION); | |
54 | ||
55 | static int atl1c_stop_mac(struct atl1c_hw *hw); | |
43250ddd | 56 | static void atl1c_disable_l0s_l1(struct atl1c_hw *hw); |
024e1e4d | 57 | static void atl1c_set_aspm(struct atl1c_hw *hw, u16 link_speed); |
25456e5c | 58 | static void atl1c_start_mac(struct atl1c_adapter *adapter); |
9f1fd0ef | 59 | static void atl1c_clean_rx_irq(struct atl1c_adapter *adapter, |
43250ddd | 60 | int *work_done, int work_to_do); |
0fb1e54e | 61 | static int atl1c_up(struct atl1c_adapter *adapter); |
62 | static void atl1c_down(struct atl1c_adapter *adapter); | |
5e5c0964 HX |
63 | static int atl1c_reset_mac(struct atl1c_hw *hw); |
64 | static void atl1c_reset_dma_ring(struct atl1c_adapter *adapter); | |
65 | static int atl1c_configure(struct atl1c_adapter *adapter); | |
66 | static int atl1c_alloc_rx_buffer(struct atl1c_adapter *adapter); | |
43250ddd JY |
67 | |
68 | static const u16 atl1c_pay_load_size[] = { | |
69 | 128, 256, 512, 1024, 2048, 4096, | |
70 | }; | |
71 | ||
43250ddd JY |
72 | |
73 | static const u32 atl1c_default_msg = NETIF_MSG_DRV | NETIF_MSG_PROBE | | |
74 | NETIF_MSG_LINK | NETIF_MSG_TIMER | NETIF_MSG_IFDOWN | NETIF_MSG_IFUP; | |
8f574b35 JY |
75 | static void atl1c_pcie_patch(struct atl1c_hw *hw) |
76 | { | |
5cbdcc2f HX |
77 | u32 mst_data, data; |
78 | ||
79 | /* pclk sel could switch to 25M */ | |
80 | AT_READ_REG(hw, REG_MASTER_CTRL, &mst_data); | |
81 | mst_data &= ~MASTER_CTRL_CLK_SEL_DIS; | |
82 | AT_WRITE_REG(hw, REG_MASTER_CTRL, mst_data); | |
43250ddd | 83 | |
ebe22ed9 HX |
84 | /* WoL/PCIE related settings */ |
85 | if (hw->nic_type == athr_l1c || hw->nic_type == athr_l2c) { | |
86 | AT_READ_REG(hw, REG_PCIE_PHYMISC, &data); | |
87 | data |= PCIE_PHYMISC_FORCE_RCV_DET; | |
88 | AT_WRITE_REG(hw, REG_PCIE_PHYMISC, data); | |
89 | } else { /* new dev set bit5 of MASTER */ | |
90 | if (!(mst_data & MASTER_CTRL_WAKEN_25M)) | |
91 | AT_WRITE_REG(hw, REG_MASTER_CTRL, | |
92 | mst_data | MASTER_CTRL_WAKEN_25M); | |
93 | } | |
94 | /* aspm/PCIE setting only for l2cb 1.0 */ | |
8f574b35 JY |
95 | if (hw->nic_type == athr_l2c_b && hw->revision_id == L2CB_V10) { |
96 | AT_READ_REG(hw, REG_PCIE_PHYMISC2, &data); | |
ebe22ed9 HX |
97 | data = FIELD_SETX(data, PCIE_PHYMISC2_CDR_BW, |
98 | L2CB1_PCIE_PHYMISC2_CDR_BW); | |
99 | data = FIELD_SETX(data, PCIE_PHYMISC2_L0S_TH, | |
100 | L2CB1_PCIE_PHYMISC2_L0S_TH); | |
8f574b35 | 101 | AT_WRITE_REG(hw, REG_PCIE_PHYMISC2, data); |
ebe22ed9 HX |
102 | /* extend L1 sync timer */ |
103 | AT_READ_REG(hw, REG_LINK_CTRL, &data); | |
104 | data |= LINK_CTRL_EXT_SYNC; | |
105 | AT_WRITE_REG(hw, REG_LINK_CTRL, data); | |
106 | } | |
107 | /* l2cb 1.x & l1d 1.x */ | |
108 | if (hw->nic_type == athr_l2c_b || hw->nic_type == athr_l1d) { | |
109 | AT_READ_REG(hw, REG_PM_CTRL, &data); | |
110 | data |= PM_CTRL_L0S_BUFSRX_EN; | |
111 | AT_WRITE_REG(hw, REG_PM_CTRL, data); | |
112 | /* clear vendor msg */ | |
113 | AT_READ_REG(hw, REG_DMA_DBG, &data); | |
114 | AT_WRITE_REG(hw, REG_DMA_DBG, data & ~DMA_DBG_VENDOR_MSG); | |
8f574b35 JY |
115 | } |
116 | } | |
117 | ||
118 | /* FIXME: no need any more ? */ | |
43250ddd JY |
119 | /* |
120 | * atl1c_init_pcie - init PCIE module | |
121 | */ | |
122 | static void atl1c_reset_pcie(struct atl1c_hw *hw, u32 flag) | |
123 | { | |
124 | u32 data; | |
125 | u32 pci_cmd; | |
126 | struct pci_dev *pdev = hw->adapter->pdev; | |
95f9aea7 | 127 | int pos; |
43250ddd JY |
128 | |
129 | AT_READ_REG(hw, PCI_COMMAND, &pci_cmd); | |
130 | pci_cmd &= ~PCI_COMMAND_INTX_DISABLE; | |
131 | pci_cmd |= (PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER | | |
132 | PCI_COMMAND_IO); | |
133 | AT_WRITE_REG(hw, PCI_COMMAND, pci_cmd); | |
134 | ||
135 | /* | |
136 | * Clear any PowerSaveing Settings | |
137 | */ | |
138 | pci_enable_wake(pdev, PCI_D3hot, 0); | |
139 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
87eabe6b HX |
140 | /* wol sts read-clear */ |
141 | AT_READ_REG(hw, REG_WOL_CTRL, &data); | |
142 | AT_WRITE_REG(hw, REG_WOL_CTRL, 0); | |
43250ddd JY |
143 | |
144 | /* | |
145 | * Mask some pcie error bits | |
146 | */ | |
95f9aea7 HX |
147 | pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_ERR); |
148 | pci_read_config_dword(pdev, pos + PCI_ERR_UNCOR_SEVER, &data); | |
149 | data &= ~(PCI_ERR_UNC_DLP | PCI_ERR_UNC_FCP); | |
150 | pci_write_config_dword(pdev, pos + PCI_ERR_UNCOR_SEVER, data); | |
151 | /* clear error status */ | |
eb0ff563 | 152 | pcie_capability_write_word(pdev, PCI_EXP_DEVSTA, |
95f9aea7 HX |
153 | PCI_EXP_DEVSTA_NFED | |
154 | PCI_EXP_DEVSTA_FED | | |
155 | PCI_EXP_DEVSTA_CED | | |
156 | PCI_EXP_DEVSTA_URD); | |
43250ddd | 157 | |
8f574b35 JY |
158 | AT_READ_REG(hw, REG_LTSSM_ID_CTRL, &data); |
159 | data &= ~LTSSM_ID_EN_WRO; | |
160 | AT_WRITE_REG(hw, REG_LTSSM_ID_CTRL, data); | |
161 | ||
162 | atl1c_pcie_patch(hw); | |
43250ddd JY |
163 | if (flag & ATL1C_PCIE_L0S_L1_DISABLE) |
164 | atl1c_disable_l0s_l1(hw); | |
43250ddd | 165 | |
8f574b35 | 166 | msleep(5); |
43250ddd JY |
167 | } |
168 | ||
49ce9c2c | 169 | /** |
43250ddd JY |
170 | * atl1c_irq_enable - Enable default interrupt generation settings |
171 | * @adapter: board private structure | |
172 | */ | |
173 | static inline void atl1c_irq_enable(struct atl1c_adapter *adapter) | |
174 | { | |
175 | if (likely(atomic_dec_and_test(&adapter->irq_sem))) { | |
176 | AT_WRITE_REG(&adapter->hw, REG_ISR, 0x7FFFFFFF); | |
177 | AT_WRITE_REG(&adapter->hw, REG_IMR, adapter->hw.intr_mask); | |
178 | AT_WRITE_FLUSH(&adapter->hw); | |
179 | } | |
180 | } | |
181 | ||
49ce9c2c | 182 | /** |
43250ddd JY |
183 | * atl1c_irq_disable - Mask off interrupt generation on the NIC |
184 | * @adapter: board private structure | |
185 | */ | |
186 | static inline void atl1c_irq_disable(struct atl1c_adapter *adapter) | |
187 | { | |
188 | atomic_inc(&adapter->irq_sem); | |
189 | AT_WRITE_REG(&adapter->hw, REG_IMR, 0); | |
8f574b35 | 190 | AT_WRITE_REG(&adapter->hw, REG_ISR, ISR_DIS_INT); |
43250ddd JY |
191 | AT_WRITE_FLUSH(&adapter->hw); |
192 | synchronize_irq(adapter->pdev->irq); | |
193 | } | |
194 | ||
49ce9c2c | 195 | /** |
43250ddd JY |
196 | * atl1c_irq_reset - reset interrupt confiure on the NIC |
197 | * @adapter: board private structure | |
198 | */ | |
199 | static inline void atl1c_irq_reset(struct atl1c_adapter *adapter) | |
200 | { | |
201 | atomic_set(&adapter->irq_sem, 1); | |
202 | atl1c_irq_enable(adapter); | |
203 | } | |
204 | ||
c930a662 JP |
205 | /* |
206 | * atl1c_wait_until_idle - wait up to AT_HW_MAX_IDLE_DELAY reads | |
207 | * of the idle status register until the device is actually idle | |
208 | */ | |
969a7ee2 | 209 | static u32 atl1c_wait_until_idle(struct atl1c_hw *hw, u32 modu_ctrl) |
c930a662 JP |
210 | { |
211 | int timeout; | |
212 | u32 data; | |
213 | ||
214 | for (timeout = 0; timeout < AT_HW_MAX_IDLE_DELAY; timeout++) { | |
215 | AT_READ_REG(hw, REG_IDLE_STATUS, &data); | |
969a7ee2 | 216 | if ((data & modu_ctrl) == 0) |
c930a662 JP |
217 | return 0; |
218 | msleep(1); | |
219 | } | |
220 | return data; | |
221 | } | |
222 | ||
49ce9c2c | 223 | /** |
43250ddd JY |
224 | * atl1c_phy_config - Timer Call-back |
225 | * @data: pointer to netdev cast into an unsigned long | |
226 | */ | |
227 | static void atl1c_phy_config(unsigned long data) | |
228 | { | |
229 | struct atl1c_adapter *adapter = (struct atl1c_adapter *) data; | |
230 | struct atl1c_hw *hw = &adapter->hw; | |
231 | unsigned long flags; | |
232 | ||
233 | spin_lock_irqsave(&adapter->mdio_lock, flags); | |
234 | atl1c_restart_autoneg(hw); | |
235 | spin_unlock_irqrestore(&adapter->mdio_lock, flags); | |
236 | } | |
237 | ||
238 | void atl1c_reinit_locked(struct atl1c_adapter *adapter) | |
239 | { | |
43250ddd JY |
240 | WARN_ON(in_interrupt()); |
241 | atl1c_down(adapter); | |
242 | atl1c_up(adapter); | |
243 | clear_bit(__AT_RESETTING, &adapter->flags); | |
244 | } | |
245 | ||
43250ddd JY |
246 | static void atl1c_check_link_status(struct atl1c_adapter *adapter) |
247 | { | |
248 | struct atl1c_hw *hw = &adapter->hw; | |
249 | struct net_device *netdev = adapter->netdev; | |
250 | struct pci_dev *pdev = adapter->pdev; | |
251 | int err; | |
252 | unsigned long flags; | |
253 | u16 speed, duplex, phy_data; | |
254 | ||
255 | spin_lock_irqsave(&adapter->mdio_lock, flags); | |
256 | /* MII_BMSR must read twise */ | |
257 | atl1c_read_phy_reg(hw, MII_BMSR, &phy_data); | |
258 | atl1c_read_phy_reg(hw, MII_BMSR, &phy_data); | |
259 | spin_unlock_irqrestore(&adapter->mdio_lock, flags); | |
260 | ||
261 | if ((phy_data & BMSR_LSTATUS) == 0) { | |
262 | /* link down */ | |
5e5c0964 | 263 | netif_carrier_off(netdev); |
8f574b35 | 264 | hw->hibernate = true; |
5e5c0964 | 265 | if (atl1c_reset_mac(hw) != 0) |
8f574b35 | 266 | if (netif_msg_hw(adapter)) |
5e5c0964 | 267 | dev_warn(&pdev->dev, "reset mac failed\n"); |
024e1e4d | 268 | atl1c_set_aspm(hw, SPEED_0); |
903d7ce0 | 269 | atl1c_post_phy_linkchg(hw, SPEED_0); |
5e5c0964 HX |
270 | atl1c_reset_dma_ring(adapter); |
271 | atl1c_configure(adapter); | |
43250ddd JY |
272 | } else { |
273 | /* Link Up */ | |
274 | hw->hibernate = false; | |
275 | spin_lock_irqsave(&adapter->mdio_lock, flags); | |
276 | err = atl1c_get_speed_and_duplex(hw, &speed, &duplex); | |
277 | spin_unlock_irqrestore(&adapter->mdio_lock, flags); | |
278 | if (unlikely(err)) | |
279 | return; | |
280 | /* link result is our setting */ | |
281 | if (adapter->link_speed != speed || | |
282 | adapter->link_duplex != duplex) { | |
283 | adapter->link_speed = speed; | |
284 | adapter->link_duplex = duplex; | |
024e1e4d | 285 | atl1c_set_aspm(hw, speed); |
903d7ce0 | 286 | atl1c_post_phy_linkchg(hw, speed); |
25456e5c | 287 | atl1c_start_mac(adapter); |
43250ddd JY |
288 | if (netif_msg_link(adapter)) |
289 | dev_info(&pdev->dev, | |
290 | "%s: %s NIC Link is Up<%d Mbps %s>\n", | |
291 | atl1c_driver_name, netdev->name, | |
292 | adapter->link_speed, | |
293 | adapter->link_duplex == FULL_DUPLEX ? | |
294 | "Full Duplex" : "Half Duplex"); | |
295 | } | |
296 | if (!netif_carrier_ok(netdev)) | |
297 | netif_carrier_on(netdev); | |
298 | } | |
299 | } | |
300 | ||
43250ddd JY |
301 | static void atl1c_link_chg_event(struct atl1c_adapter *adapter) |
302 | { | |
303 | struct net_device *netdev = adapter->netdev; | |
304 | struct pci_dev *pdev = adapter->pdev; | |
305 | u16 phy_data; | |
306 | u16 link_up; | |
307 | ||
308 | spin_lock(&adapter->mdio_lock); | |
309 | atl1c_read_phy_reg(&adapter->hw, MII_BMSR, &phy_data); | |
310 | atl1c_read_phy_reg(&adapter->hw, MII_BMSR, &phy_data); | |
311 | spin_unlock(&adapter->mdio_lock); | |
312 | link_up = phy_data & BMSR_LSTATUS; | |
313 | /* notify upper layer link down ASAP */ | |
314 | if (!link_up) { | |
315 | if (netif_carrier_ok(netdev)) { | |
316 | /* old link state: Up */ | |
317 | netif_carrier_off(netdev); | |
318 | if (netif_msg_link(adapter)) | |
319 | dev_info(&pdev->dev, | |
320 | "%s: %s NIC Link is Down\n", | |
321 | atl1c_driver_name, netdev->name); | |
322 | adapter->link_speed = SPEED_0; | |
323 | } | |
324 | } | |
cb190546 | 325 | |
cb771838 | 326 | set_bit(ATL1C_WORK_EVENT_LINK_CHANGE, &adapter->work_event); |
cb190546 | 327 | schedule_work(&adapter->common_task); |
43250ddd JY |
328 | } |
329 | ||
cb190546 | 330 | static void atl1c_common_task(struct work_struct *work) |
43250ddd | 331 | { |
cb190546 JY |
332 | struct atl1c_adapter *adapter; |
333 | struct net_device *netdev; | |
334 | ||
335 | adapter = container_of(work, struct atl1c_adapter, common_task); | |
336 | netdev = adapter->netdev; | |
337 | ||
0aa76ce3 HX |
338 | if (test_bit(__AT_DOWN, &adapter->flags)) |
339 | return; | |
340 | ||
cb771838 | 341 | if (test_and_clear_bit(ATL1C_WORK_EVENT_RESET, &adapter->work_event)) { |
cb190546 JY |
342 | netif_device_detach(netdev); |
343 | atl1c_down(adapter); | |
344 | atl1c_up(adapter); | |
345 | netif_device_attach(netdev); | |
cb190546 JY |
346 | } |
347 | ||
cb771838 | 348 | if (test_and_clear_bit(ATL1C_WORK_EVENT_LINK_CHANGE, |
5e5c0964 HX |
349 | &adapter->work_event)) { |
350 | atl1c_irq_disable(adapter); | |
cb190546 | 351 | atl1c_check_link_status(adapter); |
5e5c0964 HX |
352 | atl1c_irq_enable(adapter); |
353 | } | |
43250ddd JY |
354 | } |
355 | ||
cb190546 JY |
356 | |
357 | static void atl1c_del_timer(struct atl1c_adapter *adapter) | |
43250ddd | 358 | { |
cb190546 | 359 | del_timer_sync(&adapter->phy_config_timer); |
43250ddd JY |
360 | } |
361 | ||
cb190546 | 362 | |
49ce9c2c | 363 | /** |
43250ddd JY |
364 | * atl1c_tx_timeout - Respond to a Tx Hang |
365 | * @netdev: network interface device structure | |
366 | */ | |
367 | static void atl1c_tx_timeout(struct net_device *netdev) | |
368 | { | |
369 | struct atl1c_adapter *adapter = netdev_priv(netdev); | |
370 | ||
371 | /* Do the reset outside of interrupt context */ | |
cb771838 | 372 | set_bit(ATL1C_WORK_EVENT_RESET, &adapter->work_event); |
cb190546 | 373 | schedule_work(&adapter->common_task); |
43250ddd JY |
374 | } |
375 | ||
49ce9c2c | 376 | /** |
43250ddd JY |
377 | * atl1c_set_multi - Multicast and Promiscuous mode set |
378 | * @netdev: network interface device structure | |
379 | * | |
380 | * The set_multi entry point is called whenever the multicast address | |
381 | * list or the network interface flags are updated. This routine is | |
382 | * responsible for configuring the hardware for proper multicast, | |
383 | * promiscuous mode, and all-multi behavior. | |
384 | */ | |
385 | static void atl1c_set_multi(struct net_device *netdev) | |
386 | { | |
387 | struct atl1c_adapter *adapter = netdev_priv(netdev); | |
388 | struct atl1c_hw *hw = &adapter->hw; | |
22bedad3 | 389 | struct netdev_hw_addr *ha; |
43250ddd JY |
390 | u32 mac_ctrl_data; |
391 | u32 hash_value; | |
392 | ||
393 | /* Check for Promiscuous and All Multicast modes */ | |
394 | AT_READ_REG(hw, REG_MAC_CTRL, &mac_ctrl_data); | |
395 | ||
396 | if (netdev->flags & IFF_PROMISC) { | |
397 | mac_ctrl_data |= MAC_CTRL_PROMIS_EN; | |
398 | } else if (netdev->flags & IFF_ALLMULTI) { | |
399 | mac_ctrl_data |= MAC_CTRL_MC_ALL_EN; | |
400 | mac_ctrl_data &= ~MAC_CTRL_PROMIS_EN; | |
401 | } else { | |
402 | mac_ctrl_data &= ~(MAC_CTRL_PROMIS_EN | MAC_CTRL_MC_ALL_EN); | |
403 | } | |
404 | ||
405 | AT_WRITE_REG(hw, REG_MAC_CTRL, mac_ctrl_data); | |
406 | ||
407 | /* clear the old settings from the multicast hash table */ | |
408 | AT_WRITE_REG(hw, REG_RX_HASH_TABLE, 0); | |
409 | AT_WRITE_REG_ARRAY(hw, REG_RX_HASH_TABLE, 1, 0); | |
410 | ||
411 | /* comoute mc addresses' hash value ,and put it into hash table */ | |
22bedad3 JP |
412 | netdev_for_each_mc_addr(ha, netdev) { |
413 | hash_value = atl1c_hash_mc_addr(hw, ha->addr); | |
43250ddd JY |
414 | atl1c_hash_set(hw, hash_value); |
415 | } | |
416 | } | |
417 | ||
c8f44aff | 418 | static void __atl1c_vlan_mode(netdev_features_t features, u32 *mac_ctrl_data) |
46facce9 JP |
419 | { |
420 | if (features & NETIF_F_HW_VLAN_RX) { | |
421 | /* enable VLAN tag insert/strip */ | |
422 | *mac_ctrl_data |= MAC_CTRL_RMV_VLAN; | |
423 | } else { | |
424 | /* disable VLAN tag insert/strip */ | |
425 | *mac_ctrl_data &= ~MAC_CTRL_RMV_VLAN; | |
426 | } | |
427 | } | |
428 | ||
c8f44aff MM |
429 | static void atl1c_vlan_mode(struct net_device *netdev, |
430 | netdev_features_t features) | |
43250ddd JY |
431 | { |
432 | struct atl1c_adapter *adapter = netdev_priv(netdev); | |
433 | struct pci_dev *pdev = adapter->pdev; | |
434 | u32 mac_ctrl_data = 0; | |
435 | ||
436 | if (netif_msg_pktdata(adapter)) | |
46facce9 | 437 | dev_dbg(&pdev->dev, "atl1c_vlan_mode\n"); |
43250ddd JY |
438 | |
439 | atl1c_irq_disable(adapter); | |
43250ddd | 440 | AT_READ_REG(&adapter->hw, REG_MAC_CTRL, &mac_ctrl_data); |
46facce9 | 441 | __atl1c_vlan_mode(features, &mac_ctrl_data); |
43250ddd JY |
442 | AT_WRITE_REG(&adapter->hw, REG_MAC_CTRL, mac_ctrl_data); |
443 | atl1c_irq_enable(adapter); | |
444 | } | |
445 | ||
446 | static void atl1c_restore_vlan(struct atl1c_adapter *adapter) | |
447 | { | |
448 | struct pci_dev *pdev = adapter->pdev; | |
449 | ||
450 | if (netif_msg_pktdata(adapter)) | |
46facce9 JP |
451 | dev_dbg(&pdev->dev, "atl1c_restore_vlan\n"); |
452 | atl1c_vlan_mode(adapter->netdev, adapter->netdev->features); | |
43250ddd | 453 | } |
46facce9 | 454 | |
49ce9c2c | 455 | /** |
43250ddd JY |
456 | * atl1c_set_mac - Change the Ethernet Address of the NIC |
457 | * @netdev: network interface device structure | |
458 | * @p: pointer to an address structure | |
459 | * | |
460 | * Returns 0 on success, negative on failure | |
461 | */ | |
462 | static int atl1c_set_mac_addr(struct net_device *netdev, void *p) | |
463 | { | |
464 | struct atl1c_adapter *adapter = netdev_priv(netdev); | |
465 | struct sockaddr *addr = p; | |
466 | ||
467 | if (!is_valid_ether_addr(addr->sa_data)) | |
468 | return -EADDRNOTAVAIL; | |
469 | ||
470 | if (netif_running(netdev)) | |
471 | return -EBUSY; | |
472 | ||
473 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
474 | memcpy(adapter->hw.mac_addr, addr->sa_data, netdev->addr_len); | |
6a214fd4 | 475 | netdev->addr_assign_type &= ~NET_ADDR_RANDOM; |
43250ddd | 476 | |
229e6b6e | 477 | atl1c_hw_set_mac_addr(&adapter->hw, adapter->hw.mac_addr); |
43250ddd JY |
478 | |
479 | return 0; | |
480 | } | |
481 | ||
482 | static void atl1c_set_rxbufsize(struct atl1c_adapter *adapter, | |
483 | struct net_device *dev) | |
484 | { | |
485 | int mtu = dev->mtu; | |
486 | ||
487 | adapter->rx_buffer_len = mtu > AT_RX_BUF_SIZE ? | |
488 | roundup(mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN, 8) : AT_RX_BUF_SIZE; | |
489 | } | |
782d640a | 490 | |
c8f44aff MM |
491 | static netdev_features_t atl1c_fix_features(struct net_device *netdev, |
492 | netdev_features_t features) | |
782d640a | 493 | { |
46facce9 JP |
494 | /* |
495 | * Since there is no support for separate rx/tx vlan accel | |
496 | * enable/disable make sure tx flag is always in same state as rx. | |
497 | */ | |
498 | if (features & NETIF_F_HW_VLAN_RX) | |
499 | features |= NETIF_F_HW_VLAN_TX; | |
500 | else | |
501 | features &= ~NETIF_F_HW_VLAN_TX; | |
502 | ||
782d640a MM |
503 | if (netdev->mtu > MAX_TSO_FRAME_SIZE) |
504 | features &= ~(NETIF_F_TSO | NETIF_F_TSO6); | |
505 | ||
506 | return features; | |
507 | } | |
508 | ||
c8f44aff MM |
509 | static int atl1c_set_features(struct net_device *netdev, |
510 | netdev_features_t features) | |
46facce9 | 511 | { |
c8f44aff | 512 | netdev_features_t changed = netdev->features ^ features; |
46facce9 JP |
513 | |
514 | if (changed & NETIF_F_HW_VLAN_RX) | |
515 | atl1c_vlan_mode(netdev, features); | |
516 | ||
517 | return 0; | |
518 | } | |
519 | ||
49ce9c2c | 520 | /** |
43250ddd JY |
521 | * atl1c_change_mtu - Change the Maximum Transfer Unit |
522 | * @netdev: network interface device structure | |
523 | * @new_mtu: new value for maximum frame size | |
524 | * | |
525 | * Returns 0 on success, negative on failure | |
526 | */ | |
527 | static int atl1c_change_mtu(struct net_device *netdev, int new_mtu) | |
528 | { | |
529 | struct atl1c_adapter *adapter = netdev_priv(netdev); | |
c08b9b2a | 530 | struct atl1c_hw *hw = &adapter->hw; |
43250ddd JY |
531 | int old_mtu = netdev->mtu; |
532 | int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN; | |
533 | ||
c08b9b2a HX |
534 | /* Fast Ethernet controller doesn't support jumbo packet */ |
535 | if (((hw->nic_type == athr_l2c || | |
536 | hw->nic_type == athr_l2c_b || | |
537 | hw->nic_type == athr_l2c_b2) && new_mtu > ETH_DATA_LEN) || | |
538 | max_frame < ETH_ZLEN + ETH_FCS_LEN || | |
539 | max_frame > MAX_JUMBO_FRAME_SIZE) { | |
43250ddd JY |
540 | if (netif_msg_link(adapter)) |
541 | dev_warn(&adapter->pdev->dev, "invalid MTU setting\n"); | |
542 | return -EINVAL; | |
543 | } | |
544 | /* set MTU */ | |
545 | if (old_mtu != new_mtu && netif_running(netdev)) { | |
546 | while (test_and_set_bit(__AT_RESETTING, &adapter->flags)) | |
547 | msleep(1); | |
548 | netdev->mtu = new_mtu; | |
549 | adapter->hw.max_frame_size = new_mtu; | |
550 | atl1c_set_rxbufsize(adapter, netdev); | |
551 | atl1c_down(adapter); | |
782d640a | 552 | netdev_update_features(netdev); |
43250ddd JY |
553 | atl1c_up(adapter); |
554 | clear_bit(__AT_RESETTING, &adapter->flags); | |
43250ddd JY |
555 | } |
556 | return 0; | |
557 | } | |
558 | ||
559 | /* | |
560 | * caller should hold mdio_lock | |
561 | */ | |
562 | static int atl1c_mdio_read(struct net_device *netdev, int phy_id, int reg_num) | |
563 | { | |
564 | struct atl1c_adapter *adapter = netdev_priv(netdev); | |
565 | u16 result; | |
566 | ||
2528a5dc | 567 | atl1c_read_phy_reg(&adapter->hw, reg_num, &result); |
43250ddd JY |
568 | return result; |
569 | } | |
570 | ||
571 | static void atl1c_mdio_write(struct net_device *netdev, int phy_id, | |
572 | int reg_num, int val) | |
573 | { | |
574 | struct atl1c_adapter *adapter = netdev_priv(netdev); | |
575 | ||
2528a5dc | 576 | atl1c_write_phy_reg(&adapter->hw, reg_num, val); |
43250ddd JY |
577 | } |
578 | ||
43250ddd JY |
579 | static int atl1c_mii_ioctl(struct net_device *netdev, |
580 | struct ifreq *ifr, int cmd) | |
581 | { | |
582 | struct atl1c_adapter *adapter = netdev_priv(netdev); | |
583 | struct pci_dev *pdev = adapter->pdev; | |
584 | struct mii_ioctl_data *data = if_mii(ifr); | |
585 | unsigned long flags; | |
586 | int retval = 0; | |
587 | ||
588 | if (!netif_running(netdev)) | |
589 | return -EINVAL; | |
590 | ||
591 | spin_lock_irqsave(&adapter->mdio_lock, flags); | |
592 | switch (cmd) { | |
593 | case SIOCGMIIPHY: | |
594 | data->phy_id = 0; | |
595 | break; | |
596 | ||
597 | case SIOCGMIIREG: | |
43250ddd JY |
598 | if (atl1c_read_phy_reg(&adapter->hw, data->reg_num & 0x1F, |
599 | &data->val_out)) { | |
600 | retval = -EIO; | |
601 | goto out; | |
602 | } | |
603 | break; | |
604 | ||
605 | case SIOCSMIIREG: | |
43250ddd JY |
606 | if (data->reg_num & ~(0x1F)) { |
607 | retval = -EFAULT; | |
608 | goto out; | |
609 | } | |
610 | ||
611 | dev_dbg(&pdev->dev, "<atl1c_mii_ioctl> write %x %x", | |
612 | data->reg_num, data->val_in); | |
613 | if (atl1c_write_phy_reg(&adapter->hw, | |
614 | data->reg_num, data->val_in)) { | |
615 | retval = -EIO; | |
616 | goto out; | |
617 | } | |
618 | break; | |
619 | ||
620 | default: | |
621 | retval = -EOPNOTSUPP; | |
622 | break; | |
623 | } | |
624 | out: | |
625 | spin_unlock_irqrestore(&adapter->mdio_lock, flags); | |
626 | return retval; | |
627 | } | |
628 | ||
43250ddd JY |
629 | static int atl1c_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) |
630 | { | |
631 | switch (cmd) { | |
632 | case SIOCGMIIPHY: | |
633 | case SIOCGMIIREG: | |
634 | case SIOCSMIIREG: | |
635 | return atl1c_mii_ioctl(netdev, ifr, cmd); | |
636 | default: | |
637 | return -EOPNOTSUPP; | |
638 | } | |
639 | } | |
640 | ||
49ce9c2c | 641 | /** |
43250ddd JY |
642 | * atl1c_alloc_queues - Allocate memory for all rings |
643 | * @adapter: board private structure to initialize | |
644 | * | |
645 | */ | |
646 | static int __devinit atl1c_alloc_queues(struct atl1c_adapter *adapter) | |
647 | { | |
648 | return 0; | |
649 | } | |
650 | ||
651 | static void atl1c_set_mac_type(struct atl1c_hw *hw) | |
652 | { | |
653 | switch (hw->device_id) { | |
654 | case PCI_DEVICE_ID_ATTANSIC_L2C: | |
655 | hw->nic_type = athr_l2c; | |
656 | break; | |
43250ddd JY |
657 | case PCI_DEVICE_ID_ATTANSIC_L1C: |
658 | hw->nic_type = athr_l1c; | |
659 | break; | |
496c185c LR |
660 | case PCI_DEVICE_ID_ATHEROS_L2C_B: |
661 | hw->nic_type = athr_l2c_b; | |
662 | break; | |
663 | case PCI_DEVICE_ID_ATHEROS_L2C_B2: | |
664 | hw->nic_type = athr_l2c_b2; | |
665 | break; | |
666 | case PCI_DEVICE_ID_ATHEROS_L1D: | |
667 | hw->nic_type = athr_l1d; | |
668 | break; | |
8f574b35 JY |
669 | case PCI_DEVICE_ID_ATHEROS_L1D_2_0: |
670 | hw->nic_type = athr_l1d_2; | |
671 | break; | |
43250ddd JY |
672 | default: |
673 | break; | |
674 | } | |
675 | } | |
676 | ||
677 | static int atl1c_setup_mac_funcs(struct atl1c_hw *hw) | |
678 | { | |
43250ddd JY |
679 | u32 link_ctrl_data; |
680 | ||
681 | atl1c_set_mac_type(hw); | |
43250ddd JY |
682 | AT_READ_REG(hw, REG_LINK_CTRL, &link_ctrl_data); |
683 | ||
8f574b35 | 684 | hw->ctrl_flags = ATL1C_INTR_MODRT_ENABLE | |
43250ddd | 685 | ATL1C_TXQ_MODE_ENHANCE; |
024e1e4d HX |
686 | hw->ctrl_flags |= ATL1C_ASPM_L0S_SUPPORT | |
687 | ATL1C_ASPM_L1_SUPPORT; | |
8f574b35 | 688 | hw->ctrl_flags |= ATL1C_ASPM_CTRL_MON; |
43250ddd | 689 | |
496c185c | 690 | if (hw->nic_type == athr_l1c || |
8f574b35 JY |
691 | hw->nic_type == athr_l1d || |
692 | hw->nic_type == athr_l1d_2) | |
496c185c | 693 | hw->link_cap_flags |= ATL1C_LINK_CAP_1000M; |
43250ddd JY |
694 | return 0; |
695 | } | |
903d7ce0 HX |
696 | |
697 | struct atl1c_platform_patch { | |
698 | u16 pci_did; | |
699 | u8 pci_revid; | |
700 | u16 subsystem_vid; | |
701 | u16 subsystem_did; | |
702 | u32 patch_flag; | |
703 | #define ATL1C_LINK_PATCH 0x1 | |
704 | }; | |
c477ebd8 | 705 | static const struct atl1c_platform_patch plats[] __devinitconst = { |
903d7ce0 HX |
706 | {0x2060, 0xC1, 0x1019, 0x8152, 0x1}, |
707 | {0x2060, 0xC1, 0x1019, 0x2060, 0x1}, | |
708 | {0x2060, 0xC1, 0x1019, 0xE000, 0x1}, | |
709 | {0x2062, 0xC0, 0x1019, 0x8152, 0x1}, | |
710 | {0x2062, 0xC0, 0x1019, 0x2062, 0x1}, | |
711 | {0x2062, 0xC0, 0x1458, 0xE000, 0x1}, | |
712 | {0x2062, 0xC1, 0x1019, 0x8152, 0x1}, | |
713 | {0x2062, 0xC1, 0x1019, 0x2062, 0x1}, | |
714 | {0x2062, 0xC1, 0x1458, 0xE000, 0x1}, | |
715 | {0x2062, 0xC1, 0x1565, 0x2802, 0x1}, | |
716 | {0x2062, 0xC1, 0x1565, 0x2801, 0x1}, | |
717 | {0x1073, 0xC0, 0x1019, 0x8151, 0x1}, | |
718 | {0x1073, 0xC0, 0x1019, 0x1073, 0x1}, | |
719 | {0x1073, 0xC0, 0x1458, 0xE000, 0x1}, | |
720 | {0x1083, 0xC0, 0x1458, 0xE000, 0x1}, | |
721 | {0x1083, 0xC0, 0x1019, 0x8151, 0x1}, | |
722 | {0x1083, 0xC0, 0x1019, 0x1083, 0x1}, | |
723 | {0x1083, 0xC0, 0x1462, 0x7680, 0x1}, | |
724 | {0x1083, 0xC0, 0x1565, 0x2803, 0x1}, | |
725 | {0}, | |
726 | }; | |
727 | ||
728 | static void __devinit atl1c_patch_assign(struct atl1c_hw *hw) | |
729 | { | |
fa0afcd1 CR |
730 | struct pci_dev *pdev = hw->adapter->pdev; |
731 | u32 misc_ctrl; | |
903d7ce0 HX |
732 | int i = 0; |
733 | ||
734 | hw->msi_lnkpatch = false; | |
735 | ||
736 | while (plats[i].pci_did != 0) { | |
737 | if (plats[i].pci_did == hw->device_id && | |
738 | plats[i].pci_revid == hw->revision_id && | |
739 | plats[i].subsystem_vid == hw->subsystem_vendor_id && | |
740 | plats[i].subsystem_did == hw->subsystem_id) { | |
741 | if (plats[i].patch_flag & ATL1C_LINK_PATCH) | |
742 | hw->msi_lnkpatch = true; | |
743 | } | |
744 | i++; | |
745 | } | |
fa0afcd1 CR |
746 | |
747 | if (hw->device_id == PCI_DEVICE_ID_ATHEROS_L2C_B2 && | |
748 | hw->revision_id == L2CB_V21) { | |
749 | /* config acess mode */ | |
750 | pci_write_config_dword(pdev, REG_PCIE_IND_ACC_ADDR, | |
751 | REG_PCIE_DEV_MISC_CTRL); | |
752 | pci_read_config_dword(pdev, REG_PCIE_IND_ACC_DATA, &misc_ctrl); | |
753 | misc_ctrl &= ~0x100; | |
754 | pci_write_config_dword(pdev, REG_PCIE_IND_ACC_ADDR, | |
755 | REG_PCIE_DEV_MISC_CTRL); | |
756 | pci_write_config_dword(pdev, REG_PCIE_IND_ACC_DATA, misc_ctrl); | |
757 | } | |
903d7ce0 | 758 | } |
49ce9c2c | 759 | /** |
43250ddd JY |
760 | * atl1c_sw_init - Initialize general software structures (struct atl1c_adapter) |
761 | * @adapter: board private structure to initialize | |
762 | * | |
763 | * atl1c_sw_init initializes the Adapter private data structure. | |
764 | * Fields are initialized based on PCI device information and | |
765 | * OS network device settings (MTU size). | |
766 | */ | |
767 | static int __devinit atl1c_sw_init(struct atl1c_adapter *adapter) | |
768 | { | |
769 | struct atl1c_hw *hw = &adapter->hw; | |
770 | struct pci_dev *pdev = adapter->pdev; | |
8f574b35 JY |
771 | u32 revision; |
772 | ||
43250ddd JY |
773 | |
774 | adapter->wol = 0; | |
762e3023 | 775 | device_set_wakeup_enable(&pdev->dev, false); |
43250ddd JY |
776 | adapter->link_speed = SPEED_0; |
777 | adapter->link_duplex = FULL_DUPLEX; | |
43250ddd | 778 | adapter->tpd_ring[0].count = 1024; |
9f1fd0ef | 779 | adapter->rfd_ring.count = 512; |
43250ddd JY |
780 | |
781 | hw->vendor_id = pdev->vendor; | |
782 | hw->device_id = pdev->device; | |
783 | hw->subsystem_vendor_id = pdev->subsystem_vendor; | |
784 | hw->subsystem_id = pdev->subsystem_device; | |
fa0afcd1 | 785 | pci_read_config_dword(pdev, PCI_CLASS_REVISION, &revision); |
8f574b35 | 786 | hw->revision_id = revision & 0xFF; |
43250ddd JY |
787 | /* before link up, we assume hibernate is true */ |
788 | hw->hibernate = true; | |
789 | hw->media_type = MEDIA_TYPE_AUTO_SENSOR; | |
790 | if (atl1c_setup_mac_funcs(hw) != 0) { | |
791 | dev_err(&pdev->dev, "set mac function pointers failed\n"); | |
792 | return -1; | |
793 | } | |
903d7ce0 HX |
794 | atl1c_patch_assign(hw); |
795 | ||
43250ddd JY |
796 | hw->intr_mask = IMR_NORMAL_MASK; |
797 | hw->phy_configured = false; | |
798 | hw->preamble_len = 7; | |
799 | hw->max_frame_size = adapter->netdev->mtu; | |
43250ddd JY |
800 | hw->autoneg_advertised = ADVERTISED_Autoneg; |
801 | hw->indirect_tab = 0xE4E4E4E4; | |
802 | hw->base_cpu = 0; | |
803 | ||
804 | hw->ict = 50000; /* 100ms */ | |
805 | hw->smb_timer = 200000; /* 400ms */ | |
43250ddd JY |
806 | hw->rx_imt = 200; |
807 | hw->tx_imt = 1000; | |
808 | ||
809 | hw->tpd_burst = 5; | |
810 | hw->rfd_burst = 8; | |
811 | hw->dma_order = atl1c_dma_ord_out; | |
812 | hw->dmar_block = atl1c_dma_req_1024; | |
43250ddd JY |
813 | |
814 | if (atl1c_alloc_queues(adapter)) { | |
815 | dev_err(&pdev->dev, "Unable to allocate memory for queues\n"); | |
816 | return -ENOMEM; | |
817 | } | |
818 | /* TODO */ | |
819 | atl1c_set_rxbufsize(adapter, adapter->netdev); | |
820 | atomic_set(&adapter->irq_sem, 1); | |
821 | spin_lock_init(&adapter->mdio_lock); | |
822 | spin_lock_init(&adapter->tx_lock); | |
823 | set_bit(__AT_DOWN, &adapter->flags); | |
824 | ||
825 | return 0; | |
826 | } | |
827 | ||
c6060be4 JY |
828 | static inline void atl1c_clean_buffer(struct pci_dev *pdev, |
829 | struct atl1c_buffer *buffer_info, int in_irq) | |
830 | { | |
4b45e342 | 831 | u16 pci_driection; |
c6060be4 JY |
832 | if (buffer_info->flags & ATL1C_BUFFER_FREE) |
833 | return; | |
834 | if (buffer_info->dma) { | |
4b45e342 JY |
835 | if (buffer_info->flags & ATL1C_PCIMAP_FROMDEVICE) |
836 | pci_driection = PCI_DMA_FROMDEVICE; | |
837 | else | |
838 | pci_driection = PCI_DMA_TODEVICE; | |
839 | ||
c6060be4 JY |
840 | if (buffer_info->flags & ATL1C_PCIMAP_SINGLE) |
841 | pci_unmap_single(pdev, buffer_info->dma, | |
4b45e342 | 842 | buffer_info->length, pci_driection); |
c6060be4 JY |
843 | else if (buffer_info->flags & ATL1C_PCIMAP_PAGE) |
844 | pci_unmap_page(pdev, buffer_info->dma, | |
4b45e342 | 845 | buffer_info->length, pci_driection); |
c6060be4 JY |
846 | } |
847 | if (buffer_info->skb) { | |
848 | if (in_irq) | |
849 | dev_kfree_skb_irq(buffer_info->skb); | |
850 | else | |
851 | dev_kfree_skb(buffer_info->skb); | |
852 | } | |
853 | buffer_info->dma = 0; | |
854 | buffer_info->skb = NULL; | |
855 | ATL1C_SET_BUFFER_STATE(buffer_info, ATL1C_BUFFER_FREE); | |
856 | } | |
49ce9c2c | 857 | /** |
43250ddd JY |
858 | * atl1c_clean_tx_ring - Free Tx-skb |
859 | * @adapter: board private structure | |
860 | */ | |
861 | static void atl1c_clean_tx_ring(struct atl1c_adapter *adapter, | |
862 | enum atl1c_trans_queue type) | |
863 | { | |
864 | struct atl1c_tpd_ring *tpd_ring = &adapter->tpd_ring[type]; | |
865 | struct atl1c_buffer *buffer_info; | |
866 | struct pci_dev *pdev = adapter->pdev; | |
867 | u16 index, ring_count; | |
868 | ||
869 | ring_count = tpd_ring->count; | |
870 | for (index = 0; index < ring_count; index++) { | |
871 | buffer_info = &tpd_ring->buffer_info[index]; | |
c6060be4 | 872 | atl1c_clean_buffer(pdev, buffer_info, 0); |
43250ddd JY |
873 | } |
874 | ||
875 | /* Zero out Tx-buffers */ | |
876 | memset(tpd_ring->desc, 0, sizeof(struct atl1c_tpd_desc) * | |
c6060be4 | 877 | ring_count); |
43250ddd JY |
878 | atomic_set(&tpd_ring->next_to_clean, 0); |
879 | tpd_ring->next_to_use = 0; | |
880 | } | |
881 | ||
49ce9c2c | 882 | /** |
43250ddd JY |
883 | * atl1c_clean_rx_ring - Free rx-reservation skbs |
884 | * @adapter: board private structure | |
885 | */ | |
886 | static void atl1c_clean_rx_ring(struct atl1c_adapter *adapter) | |
887 | { | |
9f1fd0ef HX |
888 | struct atl1c_rfd_ring *rfd_ring = &adapter->rfd_ring; |
889 | struct atl1c_rrd_ring *rrd_ring = &adapter->rrd_ring; | |
43250ddd JY |
890 | struct atl1c_buffer *buffer_info; |
891 | struct pci_dev *pdev = adapter->pdev; | |
9f1fd0ef | 892 | int j; |
43250ddd | 893 | |
9f1fd0ef HX |
894 | for (j = 0; j < rfd_ring->count; j++) { |
895 | buffer_info = &rfd_ring->buffer_info[j]; | |
896 | atl1c_clean_buffer(pdev, buffer_info, 0); | |
43250ddd | 897 | } |
9f1fd0ef HX |
898 | /* zero out the descriptor ring */ |
899 | memset(rfd_ring->desc, 0, rfd_ring->size); | |
900 | rfd_ring->next_to_clean = 0; | |
901 | rfd_ring->next_to_use = 0; | |
902 | rrd_ring->next_to_use = 0; | |
903 | rrd_ring->next_to_clean = 0; | |
43250ddd JY |
904 | } |
905 | ||
906 | /* | |
907 | * Read / Write Ptr Initialize: | |
908 | */ | |
909 | static void atl1c_init_ring_ptrs(struct atl1c_adapter *adapter) | |
910 | { | |
911 | struct atl1c_tpd_ring *tpd_ring = adapter->tpd_ring; | |
9f1fd0ef HX |
912 | struct atl1c_rfd_ring *rfd_ring = &adapter->rfd_ring; |
913 | struct atl1c_rrd_ring *rrd_ring = &adapter->rrd_ring; | |
43250ddd JY |
914 | struct atl1c_buffer *buffer_info; |
915 | int i, j; | |
916 | ||
917 | for (i = 0; i < AT_MAX_TRANSMIT_QUEUE; i++) { | |
918 | tpd_ring[i].next_to_use = 0; | |
919 | atomic_set(&tpd_ring[i].next_to_clean, 0); | |
920 | buffer_info = tpd_ring[i].buffer_info; | |
921 | for (j = 0; j < tpd_ring->count; j++) | |
c6060be4 JY |
922 | ATL1C_SET_BUFFER_STATE(&buffer_info[i], |
923 | ATL1C_BUFFER_FREE); | |
43250ddd | 924 | } |
9f1fd0ef HX |
925 | rfd_ring->next_to_use = 0; |
926 | rfd_ring->next_to_clean = 0; | |
927 | rrd_ring->next_to_use = 0; | |
928 | rrd_ring->next_to_clean = 0; | |
929 | for (j = 0; j < rfd_ring->count; j++) { | |
930 | buffer_info = &rfd_ring->buffer_info[j]; | |
931 | ATL1C_SET_BUFFER_STATE(buffer_info, ATL1C_BUFFER_FREE); | |
43250ddd JY |
932 | } |
933 | } | |
934 | ||
49ce9c2c | 935 | /** |
43250ddd JY |
936 | * atl1c_free_ring_resources - Free Tx / RX descriptor Resources |
937 | * @adapter: board private structure | |
938 | * | |
939 | * Free all transmit software resources | |
940 | */ | |
941 | static void atl1c_free_ring_resources(struct atl1c_adapter *adapter) | |
942 | { | |
943 | struct pci_dev *pdev = adapter->pdev; | |
944 | ||
945 | pci_free_consistent(pdev, adapter->ring_header.size, | |
946 | adapter->ring_header.desc, | |
947 | adapter->ring_header.dma); | |
948 | adapter->ring_header.desc = NULL; | |
949 | ||
950 | /* Note: just free tdp_ring.buffer_info, | |
951 | * it contain rfd_ring.buffer_info, do not double free */ | |
952 | if (adapter->tpd_ring[0].buffer_info) { | |
953 | kfree(adapter->tpd_ring[0].buffer_info); | |
954 | adapter->tpd_ring[0].buffer_info = NULL; | |
955 | } | |
956 | } | |
957 | ||
49ce9c2c | 958 | /** |
43250ddd JY |
959 | * atl1c_setup_mem_resources - allocate Tx / RX descriptor resources |
960 | * @adapter: board private structure | |
961 | * | |
962 | * Return 0 on success, negative on failure | |
963 | */ | |
964 | static int atl1c_setup_ring_resources(struct atl1c_adapter *adapter) | |
965 | { | |
966 | struct pci_dev *pdev = adapter->pdev; | |
967 | struct atl1c_tpd_ring *tpd_ring = adapter->tpd_ring; | |
9f1fd0ef HX |
968 | struct atl1c_rfd_ring *rfd_ring = &adapter->rfd_ring; |
969 | struct atl1c_rrd_ring *rrd_ring = &adapter->rrd_ring; | |
43250ddd | 970 | struct atl1c_ring_header *ring_header = &adapter->ring_header; |
43250ddd JY |
971 | int size; |
972 | int i; | |
973 | int count = 0; | |
974 | int rx_desc_count = 0; | |
975 | u32 offset = 0; | |
976 | ||
9f1fd0ef | 977 | rrd_ring->count = rfd_ring->count; |
43250ddd JY |
978 | for (i = 1; i < AT_MAX_TRANSMIT_QUEUE; i++) |
979 | tpd_ring[i].count = tpd_ring[0].count; | |
980 | ||
43250ddd JY |
981 | /* 2 tpd queue, one high priority queue, |
982 | * another normal priority queue */ | |
983 | size = sizeof(struct atl1c_buffer) * (tpd_ring->count * 2 + | |
9f1fd0ef | 984 | rfd_ring->count); |
43250ddd JY |
985 | tpd_ring->buffer_info = kzalloc(size, GFP_KERNEL); |
986 | if (unlikely(!tpd_ring->buffer_info)) { | |
987 | dev_err(&pdev->dev, "kzalloc failed, size = %d\n", | |
988 | size); | |
989 | goto err_nomem; | |
990 | } | |
991 | for (i = 0; i < AT_MAX_TRANSMIT_QUEUE; i++) { | |
992 | tpd_ring[i].buffer_info = | |
64699336 | 993 | (tpd_ring->buffer_info + count); |
43250ddd JY |
994 | count += tpd_ring[i].count; |
995 | } | |
996 | ||
9f1fd0ef | 997 | rfd_ring->buffer_info = |
64699336 | 998 | (tpd_ring->buffer_info + count); |
9f1fd0ef HX |
999 | count += rfd_ring->count; |
1000 | rx_desc_count += rfd_ring->count; | |
1001 | ||
43250ddd JY |
1002 | /* |
1003 | * real ring DMA buffer | |
1004 | * each ring/block may need up to 8 bytes for alignment, hence the | |
1005 | * additional bytes tacked onto the end. | |
1006 | */ | |
1007 | ring_header->size = size = | |
1008 | sizeof(struct atl1c_tpd_desc) * tpd_ring->count * 2 + | |
1009 | sizeof(struct atl1c_rx_free_desc) * rx_desc_count + | |
1010 | sizeof(struct atl1c_recv_ret_status) * rx_desc_count + | |
8d5c6836 | 1011 | 8 * 4; |
43250ddd JY |
1012 | |
1013 | ring_header->desc = pci_alloc_consistent(pdev, ring_header->size, | |
1014 | &ring_header->dma); | |
1015 | if (unlikely(!ring_header->desc)) { | |
1016 | dev_err(&pdev->dev, "pci_alloc_consistend failed\n"); | |
1017 | goto err_nomem; | |
1018 | } | |
1019 | memset(ring_header->desc, 0, ring_header->size); | |
1020 | /* init TPD ring */ | |
1021 | ||
1022 | tpd_ring[0].dma = roundup(ring_header->dma, 8); | |
1023 | offset = tpd_ring[0].dma - ring_header->dma; | |
1024 | for (i = 0; i < AT_MAX_TRANSMIT_QUEUE; i++) { | |
1025 | tpd_ring[i].dma = ring_header->dma + offset; | |
1026 | tpd_ring[i].desc = (u8 *) ring_header->desc + offset; | |
1027 | tpd_ring[i].size = | |
1028 | sizeof(struct atl1c_tpd_desc) * tpd_ring[i].count; | |
1029 | offset += roundup(tpd_ring[i].size, 8); | |
1030 | } | |
1031 | /* init RFD ring */ | |
9f1fd0ef HX |
1032 | rfd_ring->dma = ring_header->dma + offset; |
1033 | rfd_ring->desc = (u8 *) ring_header->desc + offset; | |
1034 | rfd_ring->size = sizeof(struct atl1c_rx_free_desc) * rfd_ring->count; | |
1035 | offset += roundup(rfd_ring->size, 8); | |
43250ddd JY |
1036 | |
1037 | /* init RRD ring */ | |
9f1fd0ef HX |
1038 | rrd_ring->dma = ring_header->dma + offset; |
1039 | rrd_ring->desc = (u8 *) ring_header->desc + offset; | |
1040 | rrd_ring->size = sizeof(struct atl1c_recv_ret_status) * | |
1041 | rrd_ring->count; | |
1042 | offset += roundup(rrd_ring->size, 8); | |
43250ddd | 1043 | |
43250ddd JY |
1044 | return 0; |
1045 | ||
1046 | err_nomem: | |
1047 | kfree(tpd_ring->buffer_info); | |
1048 | return -ENOMEM; | |
1049 | } | |
1050 | ||
1051 | static void atl1c_configure_des_ring(struct atl1c_adapter *adapter) | |
1052 | { | |
1053 | struct atl1c_hw *hw = &adapter->hw; | |
9f1fd0ef HX |
1054 | struct atl1c_rfd_ring *rfd_ring = &adapter->rfd_ring; |
1055 | struct atl1c_rrd_ring *rrd_ring = &adapter->rrd_ring; | |
43250ddd JY |
1056 | struct atl1c_tpd_ring *tpd_ring = (struct atl1c_tpd_ring *) |
1057 | adapter->tpd_ring; | |
43250ddd JY |
1058 | |
1059 | /* TPD */ | |
1060 | AT_WRITE_REG(hw, REG_TX_BASE_ADDR_HI, | |
1061 | (u32)((tpd_ring[atl1c_trans_normal].dma & | |
1062 | AT_DMA_HI_ADDR_MASK) >> 32)); | |
1063 | /* just enable normal priority TX queue */ | |
0af48336 | 1064 | AT_WRITE_REG(hw, REG_TPD_PRI0_ADDR_LO, |
43250ddd JY |
1065 | (u32)(tpd_ring[atl1c_trans_normal].dma & |
1066 | AT_DMA_LO_ADDR_MASK)); | |
0af48336 | 1067 | AT_WRITE_REG(hw, REG_TPD_PRI1_ADDR_LO, |
43250ddd JY |
1068 | (u32)(tpd_ring[atl1c_trans_high].dma & |
1069 | AT_DMA_LO_ADDR_MASK)); | |
1070 | AT_WRITE_REG(hw, REG_TPD_RING_SIZE, | |
1071 | (u32)(tpd_ring[0].count & TPD_RING_SIZE_MASK)); | |
1072 | ||
1073 | ||
1074 | /* RFD */ | |
1075 | AT_WRITE_REG(hw, REG_RX_BASE_ADDR_HI, | |
9f1fd0ef HX |
1076 | (u32)((rfd_ring->dma & AT_DMA_HI_ADDR_MASK) >> 32)); |
1077 | AT_WRITE_REG(hw, REG_RFD0_HEAD_ADDR_LO, | |
1078 | (u32)(rfd_ring->dma & AT_DMA_LO_ADDR_MASK)); | |
43250ddd JY |
1079 | |
1080 | AT_WRITE_REG(hw, REG_RFD_RING_SIZE, | |
9f1fd0ef | 1081 | rfd_ring->count & RFD_RING_SIZE_MASK); |
43250ddd JY |
1082 | AT_WRITE_REG(hw, REG_RX_BUF_SIZE, |
1083 | adapter->rx_buffer_len & RX_BUF_SIZE_MASK); | |
1084 | ||
1085 | /* RRD */ | |
9f1fd0ef HX |
1086 | AT_WRITE_REG(hw, REG_RRD0_HEAD_ADDR_LO, |
1087 | (u32)(rrd_ring->dma & AT_DMA_LO_ADDR_MASK)); | |
43250ddd | 1088 | AT_WRITE_REG(hw, REG_RRD_RING_SIZE, |
9f1fd0ef | 1089 | (rrd_ring->count & RRD_RING_SIZE_MASK)); |
43250ddd | 1090 | |
8f574b35 JY |
1091 | if (hw->nic_type == athr_l2c_b) { |
1092 | AT_WRITE_REG(hw, REG_SRAM_RXF_LEN, 0x02a0L); | |
1093 | AT_WRITE_REG(hw, REG_SRAM_TXF_LEN, 0x0100L); | |
1094 | AT_WRITE_REG(hw, REG_SRAM_RXF_ADDR, 0x029f0000L); | |
1095 | AT_WRITE_REG(hw, REG_SRAM_RFD0_INFO, 0x02bf02a0L); | |
1096 | AT_WRITE_REG(hw, REG_SRAM_TXF_ADDR, 0x03bf02c0L); | |
1097 | AT_WRITE_REG(hw, REG_SRAM_TRD_ADDR, 0x03df03c0L); | |
1098 | AT_WRITE_REG(hw, REG_TXF_WATER_MARK, 0); /* TX watermark, to enter l1 state.*/ | |
1099 | AT_WRITE_REG(hw, REG_RXD_DMA_CTRL, 0); /* RXD threshold.*/ | |
1100 | } | |
43250ddd JY |
1101 | /* Load all of base address above */ |
1102 | AT_WRITE_REG(hw, REG_LOAD_PTR, 1); | |
1103 | } | |
1104 | ||
1105 | static void atl1c_configure_tx(struct atl1c_adapter *adapter) | |
1106 | { | |
1107 | struct atl1c_hw *hw = &adapter->hw; | |
59e26eff | 1108 | int max_pay_load; |
43250ddd JY |
1109 | u16 tx_offload_thresh; |
1110 | u32 txq_ctrl_data; | |
43250ddd | 1111 | |
c08b9b2a | 1112 | tx_offload_thresh = MAX_TSO_FRAME_SIZE; |
43250ddd JY |
1113 | AT_WRITE_REG(hw, REG_TX_TSO_OFFLOAD_THRESH, |
1114 | (tx_offload_thresh >> 3) & TX_TSO_OFFLOAD_THRESH_MASK); | |
59e26eff | 1115 | max_pay_load = pcie_get_readrq(adapter->pdev) >> 8; |
81b504b8 | 1116 | hw->dmar_block = min_t(u32, max_pay_load, hw->dmar_block); |
59e26eff HX |
1117 | /* |
1118 | * if BIOS had changed the dam-read-max-length to an invalid value, | |
1119 | * restore it to default value | |
1120 | */ | |
1121 | if (hw->dmar_block < DEVICE_CTRL_MAXRRS_MIN) { | |
1122 | pcie_set_readrq(adapter->pdev, 128 << DEVICE_CTRL_MAXRRS_MIN); | |
1123 | hw->dmar_block = DEVICE_CTRL_MAXRRS_MIN; | |
1124 | } | |
c24588af HX |
1125 | txq_ctrl_data = |
1126 | hw->nic_type == athr_l2c_b || hw->nic_type == athr_l2c_b2 ? | |
1127 | L2CB_TXQ_CFGV : L1C_TXQ_CFGV; | |
43250ddd JY |
1128 | |
1129 | AT_WRITE_REG(hw, REG_TXQ_CTRL, txq_ctrl_data); | |
1130 | } | |
1131 | ||
1132 | static void atl1c_configure_rx(struct atl1c_adapter *adapter) | |
1133 | { | |
1134 | struct atl1c_hw *hw = &adapter->hw; | |
1135 | u32 rxq_ctrl_data; | |
1136 | ||
1137 | rxq_ctrl_data = (hw->rfd_burst & RXQ_RFD_BURST_NUM_MASK) << | |
1138 | RXQ_RFD_BURST_NUM_SHIFT; | |
1139 | ||
1140 | if (hw->ctrl_flags & ATL1C_RX_IPV6_CHKSUM) | |
1141 | rxq_ctrl_data |= IPV6_CHKSUM_CTRL_EN; | |
9f1fd0ef | 1142 | |
9c528218 HX |
1143 | /* aspm for gigabit */ |
1144 | if (hw->nic_type != athr_l1d_2 && (hw->device_id & 1) != 0) | |
1145 | rxq_ctrl_data = FIELD_SETX(rxq_ctrl_data, ASPM_THRUPUT_LIMIT, | |
1146 | ASPM_THRUPUT_LIMIT_100M); | |
43250ddd JY |
1147 | |
1148 | AT_WRITE_REG(hw, REG_RXQ_CTRL, rxq_ctrl_data); | |
1149 | } | |
1150 | ||
43250ddd JY |
1151 | static void atl1c_configure_dma(struct atl1c_adapter *adapter) |
1152 | { | |
1153 | struct atl1c_hw *hw = &adapter->hw; | |
1154 | u32 dma_ctrl_data; | |
1155 | ||
37bfccb5 HX |
1156 | dma_ctrl_data = FIELDX(DMA_CTRL_RORDER_MODE, DMA_CTRL_RORDER_MODE_OUT) | |
1157 | DMA_CTRL_RREQ_PRI_DATA | | |
1158 | FIELDX(DMA_CTRL_RREQ_BLEN, hw->dmar_block) | | |
1159 | FIELDX(DMA_CTRL_WDLY_CNT, DMA_CTRL_WDLY_CNT_DEF) | | |
1160 | FIELDX(DMA_CTRL_RDLY_CNT, DMA_CTRL_RDLY_CNT_DEF); | |
43250ddd JY |
1161 | |
1162 | AT_WRITE_REG(hw, REG_DMA_CTRL, dma_ctrl_data); | |
1163 | } | |
1164 | ||
1165 | /* | |
1166 | * Stop the mac, transmit and receive units | |
1167 | * hw - Struct containing variables accessed by shared code | |
1168 | * return : 0 or idle status (if error) | |
1169 | */ | |
1170 | static int atl1c_stop_mac(struct atl1c_hw *hw) | |
1171 | { | |
1172 | u32 data; | |
43250ddd JY |
1173 | |
1174 | AT_READ_REG(hw, REG_RXQ_CTRL, &data); | |
027392c2 | 1175 | data &= ~RXQ_CTRL_EN; |
43250ddd JY |
1176 | AT_WRITE_REG(hw, REG_RXQ_CTRL, data); |
1177 | ||
1178 | AT_READ_REG(hw, REG_TXQ_CTRL, &data); | |
1179 | data &= ~TXQ_CTRL_EN; | |
0cbec61c | 1180 | AT_WRITE_REG(hw, REG_TXQ_CTRL, data); |
43250ddd | 1181 | |
969a7ee2 | 1182 | atl1c_wait_until_idle(hw, IDLE_STATUS_RXQ_BUSY | IDLE_STATUS_TXQ_BUSY); |
43250ddd JY |
1183 | |
1184 | AT_READ_REG(hw, REG_MAC_CTRL, &data); | |
1185 | data &= ~(MAC_CTRL_TX_EN | MAC_CTRL_RX_EN); | |
1186 | AT_WRITE_REG(hw, REG_MAC_CTRL, data); | |
1187 | ||
969a7ee2 HX |
1188 | return (int)atl1c_wait_until_idle(hw, |
1189 | IDLE_STATUS_TXMAC_BUSY | IDLE_STATUS_RXMAC_BUSY); | |
43250ddd JY |
1190 | } |
1191 | ||
25456e5c | 1192 | static void atl1c_start_mac(struct atl1c_adapter *adapter) |
43250ddd | 1193 | { |
25456e5c HX |
1194 | struct atl1c_hw *hw = &adapter->hw; |
1195 | u32 mac, txq, rxq; | |
1196 | ||
1197 | hw->mac_duplex = adapter->link_duplex == FULL_DUPLEX ? true : false; | |
1198 | hw->mac_speed = adapter->link_speed == SPEED_1000 ? | |
1199 | atl1c_mac_speed_1000 : atl1c_mac_speed_10_100; | |
1200 | ||
1201 | AT_READ_REG(hw, REG_TXQ_CTRL, &txq); | |
1202 | AT_READ_REG(hw, REG_RXQ_CTRL, &rxq); | |
1203 | AT_READ_REG(hw, REG_MAC_CTRL, &mac); | |
1204 | ||
1205 | txq |= TXQ_CTRL_EN; | |
1206 | rxq |= RXQ_CTRL_EN; | |
1207 | mac |= MAC_CTRL_TX_EN | MAC_CTRL_TX_FLOW | | |
1208 | MAC_CTRL_RX_EN | MAC_CTRL_RX_FLOW | | |
1209 | MAC_CTRL_ADD_CRC | MAC_CTRL_PAD | | |
1210 | MAC_CTRL_BC_EN | MAC_CTRL_SINGLE_PAUSE_EN | | |
1211 | MAC_CTRL_HASH_ALG_CRC32; | |
1212 | if (hw->mac_duplex) | |
1213 | mac |= MAC_CTRL_DUPLX; | |
1214 | else | |
1215 | mac &= ~MAC_CTRL_DUPLX; | |
1216 | mac = FIELD_SETX(mac, MAC_CTRL_SPEED, hw->mac_speed); | |
1217 | mac = FIELD_SETX(mac, MAC_CTRL_PRMLEN, hw->preamble_len); | |
43250ddd | 1218 | |
25456e5c HX |
1219 | AT_WRITE_REG(hw, REG_TXQ_CTRL, txq); |
1220 | AT_WRITE_REG(hw, REG_RXQ_CTRL, rxq); | |
1221 | AT_WRITE_REG(hw, REG_MAC_CTRL, mac); | |
43250ddd JY |
1222 | } |
1223 | ||
1224 | /* | |
1225 | * Reset the transmit and receive units; mask and clear all interrupts. | |
1226 | * hw - Struct containing variables accessed by shared code | |
1227 | * return : 0 or idle status (if error) | |
1228 | */ | |
1229 | static int atl1c_reset_mac(struct atl1c_hw *hw) | |
1230 | { | |
64699336 | 1231 | struct atl1c_adapter *adapter = hw->adapter; |
43250ddd | 1232 | struct pci_dev *pdev = adapter->pdev; |
7737fd96 | 1233 | u32 ctrl_data = 0; |
43250ddd | 1234 | |
8f574b35 | 1235 | atl1c_stop_mac(hw); |
43250ddd JY |
1236 | /* |
1237 | * Issue Soft Reset to the MAC. This will reset the chip's | |
1238 | * transmit, receive, DMA. It will not effect | |
1239 | * the current PCI configuration. The global reset bit is self- | |
1240 | * clearing, and should clear within a microsecond. | |
1241 | */ | |
7737fd96 HX |
1242 | AT_READ_REG(hw, REG_MASTER_CTRL, &ctrl_data); |
1243 | ctrl_data |= MASTER_CTRL_OOB_DIS; | |
1244 | AT_WRITE_REG(hw, REG_MASTER_CTRL, ctrl_data | MASTER_CTRL_SOFT_RST); | |
8f574b35 | 1245 | |
43250ddd JY |
1246 | AT_WRITE_FLUSH(hw); |
1247 | msleep(10); | |
1248 | /* Wait at least 10ms for All module to be Idle */ | |
c930a662 | 1249 | |
969a7ee2 | 1250 | if (atl1c_wait_until_idle(hw, IDLE_STATUS_MASK)) { |
43250ddd | 1251 | dev_err(&pdev->dev, |
c930a662 | 1252 | "MAC state machine can't be idle since" |
43250ddd JY |
1253 | " disabled for 10ms second\n"); |
1254 | return -1; | |
1255 | } | |
7737fd96 HX |
1256 | AT_WRITE_REG(hw, REG_MASTER_CTRL, ctrl_data); |
1257 | ||
1258 | /* driver control speed/duplex */ | |
1259 | AT_READ_REG(hw, REG_MAC_CTRL, &ctrl_data); | |
1260 | AT_WRITE_REG(hw, REG_MAC_CTRL, ctrl_data | MAC_CTRL_SPEED_MODE_SW); | |
1261 | ||
1262 | /* clk switch setting */ | |
1263 | AT_READ_REG(hw, REG_SERDES, &ctrl_data); | |
1264 | switch (hw->nic_type) { | |
1265 | case athr_l2c_b: | |
1266 | ctrl_data &= ~(SERDES_PHY_CLK_SLOWDOWN | | |
1267 | SERDES_MAC_CLK_SLOWDOWN); | |
1268 | AT_WRITE_REG(hw, REG_SERDES, ctrl_data); | |
1269 | break; | |
1270 | case athr_l2c_b2: | |
1271 | case athr_l1d_2: | |
1272 | ctrl_data |= SERDES_PHY_CLK_SLOWDOWN | SERDES_MAC_CLK_SLOWDOWN; | |
1273 | AT_WRITE_REG(hw, REG_SERDES, ctrl_data); | |
1274 | break; | |
1275 | default: | |
1276 | break; | |
1277 | } | |
ebe22ed9 | 1278 | |
43250ddd JY |
1279 | return 0; |
1280 | } | |
1281 | ||
1282 | static void atl1c_disable_l0s_l1(struct atl1c_hw *hw) | |
1283 | { | |
024e1e4d | 1284 | u16 ctrl_flags = hw->ctrl_flags; |
43250ddd | 1285 | |
024e1e4d HX |
1286 | hw->ctrl_flags &= ~(ATL1C_ASPM_L0S_SUPPORT | ATL1C_ASPM_L1_SUPPORT); |
1287 | atl1c_set_aspm(hw, SPEED_0); | |
1288 | hw->ctrl_flags = ctrl_flags; | |
43250ddd JY |
1289 | } |
1290 | ||
1291 | /* | |
1292 | * Set ASPM state. | |
1293 | * Enable/disable L0s/L1 depend on link state. | |
1294 | */ | |
024e1e4d | 1295 | static void atl1c_set_aspm(struct atl1c_hw *hw, u16 link_speed) |
43250ddd JY |
1296 | { |
1297 | u32 pm_ctrl_data; | |
024e1e4d | 1298 | u32 link_l1_timer; |
43250ddd JY |
1299 | |
1300 | AT_READ_REG(hw, REG_PM_CTRL, &pm_ctrl_data); | |
024e1e4d HX |
1301 | pm_ctrl_data &= ~(PM_CTRL_ASPM_L1_EN | |
1302 | PM_CTRL_ASPM_L0S_EN | | |
1303 | PM_CTRL_MAC_ASPM_CHK); | |
1304 | /* L1 timer */ | |
1305 | if (hw->nic_type == athr_l2c_b2 || hw->nic_type == athr_l1d_2) { | |
1306 | pm_ctrl_data &= ~PMCTRL_TXL1_AFTER_L0S; | |
1307 | link_l1_timer = | |
1308 | link_speed == SPEED_1000 || link_speed == SPEED_100 ? | |
1309 | L1D_PMCTRL_L1_ENTRY_TM_16US : 1; | |
1310 | pm_ctrl_data = FIELD_SETX(pm_ctrl_data, | |
1311 | L1D_PMCTRL_L1_ENTRY_TM, link_l1_timer); | |
1312 | } else { | |
1313 | link_l1_timer = hw->nic_type == athr_l2c_b ? | |
1314 | L2CB1_PM_CTRL_L1_ENTRY_TM : L1C_PM_CTRL_L1_ENTRY_TM; | |
1315 | if (link_speed != SPEED_1000 && link_speed != SPEED_100) | |
1316 | link_l1_timer = 1; | |
1317 | pm_ctrl_data = FIELD_SETX(pm_ctrl_data, | |
1318 | PM_CTRL_L1_ENTRY_TIMER, link_l1_timer); | |
1319 | } | |
496c185c | 1320 | |
024e1e4d | 1321 | /* L0S/L1 enable */ |
4fc36352 | 1322 | if ((hw->ctrl_flags & ATL1C_ASPM_L0S_SUPPORT) && link_speed != SPEED_0) |
024e1e4d HX |
1323 | pm_ctrl_data |= PM_CTRL_ASPM_L0S_EN | PM_CTRL_MAC_ASPM_CHK; |
1324 | if (hw->ctrl_flags & ATL1C_ASPM_L1_SUPPORT) | |
1325 | pm_ctrl_data |= PM_CTRL_ASPM_L1_EN | PM_CTRL_MAC_ASPM_CHK; | |
496c185c | 1326 | |
024e1e4d | 1327 | /* l2cb & l1d & l2cb2 & l1d2 */ |
8f574b35 | 1328 | if (hw->nic_type == athr_l2c_b || hw->nic_type == athr_l1d || |
024e1e4d HX |
1329 | hw->nic_type == athr_l2c_b2 || hw->nic_type == athr_l1d_2) { |
1330 | pm_ctrl_data = FIELD_SETX(pm_ctrl_data, | |
1331 | PM_CTRL_PM_REQ_TIMER, PM_CTRL_PM_REQ_TO_DEF); | |
1332 | pm_ctrl_data |= PM_CTRL_RCVR_WT_TIMER | | |
1333 | PM_CTRL_SERDES_PD_EX_L1 | | |
1334 | PM_CTRL_CLK_SWH_L1; | |
1335 | pm_ctrl_data &= ~(PM_CTRL_SERDES_L1_EN | | |
1336 | PM_CTRL_SERDES_PLL_L1_EN | | |
1337 | PM_CTRL_SERDES_BUFS_RX_L1_EN | | |
1338 | PM_CTRL_SA_DLY_EN | | |
1339 | PM_CTRL_HOTRST); | |
1340 | /* disable l0s if link down or l2cb */ | |
1341 | if (link_speed == SPEED_0 || hw->nic_type == athr_l2c_b) | |
496c185c | 1342 | pm_ctrl_data &= ~PM_CTRL_ASPM_L0S_EN; |
024e1e4d HX |
1343 | } else { /* l1c */ |
1344 | pm_ctrl_data = | |
1345 | FIELD_SETX(pm_ctrl_data, PM_CTRL_L1_ENTRY_TIMER, 0); | |
1346 | if (link_speed != SPEED_0) { | |
1347 | pm_ctrl_data |= PM_CTRL_SERDES_L1_EN | | |
1348 | PM_CTRL_SERDES_PLL_L1_EN | | |
1349 | PM_CTRL_SERDES_BUFS_RX_L1_EN; | |
1350 | pm_ctrl_data &= ~(PM_CTRL_SERDES_PD_EX_L1 | | |
1351 | PM_CTRL_CLK_SWH_L1 | | |
1352 | PM_CTRL_ASPM_L0S_EN | | |
1353 | PM_CTRL_ASPM_L1_EN); | |
1354 | } else { /* link down */ | |
1355 | pm_ctrl_data |= PM_CTRL_CLK_SWH_L1; | |
1356 | pm_ctrl_data &= ~(PM_CTRL_SERDES_L1_EN | | |
1357 | PM_CTRL_SERDES_PLL_L1_EN | | |
1358 | PM_CTRL_SERDES_BUFS_RX_L1_EN | | |
1359 | PM_CTRL_ASPM_L0S_EN); | |
8f574b35 | 1360 | } |
43250ddd | 1361 | } |
43250ddd | 1362 | AT_WRITE_REG(hw, REG_PM_CTRL, pm_ctrl_data); |
8f574b35 JY |
1363 | |
1364 | return; | |
43250ddd JY |
1365 | } |
1366 | ||
49ce9c2c | 1367 | /** |
43250ddd JY |
1368 | * atl1c_configure - Configure Transmit&Receive Unit after Reset |
1369 | * @adapter: board private structure | |
1370 | * | |
1371 | * Configure the Tx /Rx unit of the MAC after a reset. | |
1372 | */ | |
5e5c0964 | 1373 | static int atl1c_configure_mac(struct atl1c_adapter *adapter) |
43250ddd JY |
1374 | { |
1375 | struct atl1c_hw *hw = &adapter->hw; | |
1376 | u32 master_ctrl_data = 0; | |
1377 | u32 intr_modrt_data; | |
8f574b35 | 1378 | u32 data; |
43250ddd | 1379 | |
ebe22ed9 HX |
1380 | AT_READ_REG(hw, REG_MASTER_CTRL, &master_ctrl_data); |
1381 | master_ctrl_data &= ~(MASTER_CTRL_TX_ITIMER_EN | | |
1382 | MASTER_CTRL_RX_ITIMER_EN | | |
1383 | MASTER_CTRL_INT_RDCLR); | |
43250ddd JY |
1384 | /* clear interrupt status */ |
1385 | AT_WRITE_REG(hw, REG_ISR, 0xFFFFFFFF); | |
1386 | /* Clear any WOL status */ | |
1387 | AT_WRITE_REG(hw, REG_WOL_CTRL, 0); | |
1388 | /* set Interrupt Clear Timer | |
1389 | * HW will enable self to assert interrupt event to system after | |
1390 | * waiting x-time for software to notify it accept interrupt. | |
1391 | */ | |
8f574b35 JY |
1392 | |
1393 | data = CLK_GATING_EN_ALL; | |
1394 | if (hw->ctrl_flags & ATL1C_CLK_GATING_EN) { | |
1395 | if (hw->nic_type == athr_l2c_b) | |
1396 | data &= ~CLK_GATING_RXMAC_EN; | |
1397 | } else | |
1398 | data = 0; | |
1399 | AT_WRITE_REG(hw, REG_CLK_GATING_CTRL, data); | |
1400 | ||
43250ddd JY |
1401 | AT_WRITE_REG(hw, REG_INT_RETRIG_TIMER, |
1402 | hw->ict & INT_RETRIG_TIMER_MASK); | |
1403 | ||
1404 | atl1c_configure_des_ring(adapter); | |
1405 | ||
1406 | if (hw->ctrl_flags & ATL1C_INTR_MODRT_ENABLE) { | |
1407 | intr_modrt_data = (hw->tx_imt & IRQ_MODRT_TIMER_MASK) << | |
1408 | IRQ_MODRT_TX_TIMER_SHIFT; | |
1409 | intr_modrt_data |= (hw->rx_imt & IRQ_MODRT_TIMER_MASK) << | |
1410 | IRQ_MODRT_RX_TIMER_SHIFT; | |
1411 | AT_WRITE_REG(hw, REG_IRQ_MODRT_TIMER_INIT, intr_modrt_data); | |
1412 | master_ctrl_data |= | |
1413 | MASTER_CTRL_TX_ITIMER_EN | MASTER_CTRL_RX_ITIMER_EN; | |
1414 | } | |
1415 | ||
1416 | if (hw->ctrl_flags & ATL1C_INTR_CLEAR_ON_READ) | |
1417 | master_ctrl_data |= MASTER_CTRL_INT_RDCLR; | |
1418 | ||
8f574b35 | 1419 | master_ctrl_data |= MASTER_CTRL_SA_TIMER_EN; |
43250ddd JY |
1420 | AT_WRITE_REG(hw, REG_MASTER_CTRL, master_ctrl_data); |
1421 | ||
8d5c6836 HX |
1422 | AT_WRITE_REG(hw, REG_SMB_STAT_TIMER, |
1423 | hw->smb_timer & SMB_STAT_TIMER_MASK); | |
43250ddd | 1424 | |
43250ddd JY |
1425 | /* set MTU */ |
1426 | AT_WRITE_REG(hw, REG_MTU, hw->max_frame_size + ETH_HLEN + | |
1427 | VLAN_HLEN + ETH_FCS_LEN); | |
43250ddd JY |
1428 | |
1429 | atl1c_configure_tx(adapter); | |
1430 | atl1c_configure_rx(adapter); | |
43250ddd JY |
1431 | atl1c_configure_dma(adapter); |
1432 | ||
1433 | return 0; | |
1434 | } | |
1435 | ||
5e5c0964 HX |
1436 | static int atl1c_configure(struct atl1c_adapter *adapter) |
1437 | { | |
1438 | struct net_device *netdev = adapter->netdev; | |
1439 | int num; | |
1440 | ||
1441 | atl1c_init_ring_ptrs(adapter); | |
1442 | atl1c_set_multi(netdev); | |
1443 | atl1c_restore_vlan(adapter); | |
1444 | ||
1445 | num = atl1c_alloc_rx_buffer(adapter); | |
1446 | if (unlikely(num == 0)) | |
1447 | return -ENOMEM; | |
1448 | ||
1449 | if (atl1c_configure_mac(adapter)) | |
1450 | return -EIO; | |
1451 | ||
1452 | return 0; | |
1453 | } | |
1454 | ||
43250ddd JY |
1455 | static void atl1c_update_hw_stats(struct atl1c_adapter *adapter) |
1456 | { | |
1457 | u16 hw_reg_addr = 0; | |
1458 | unsigned long *stats_item = NULL; | |
1459 | u32 data; | |
1460 | ||
1461 | /* update rx status */ | |
1462 | hw_reg_addr = REG_MAC_RX_STATUS_BIN; | |
1463 | stats_item = &adapter->hw_stats.rx_ok; | |
1464 | while (hw_reg_addr <= REG_MAC_RX_STATUS_END) { | |
1465 | AT_READ_REG(&adapter->hw, hw_reg_addr, &data); | |
1466 | *stats_item += data; | |
1467 | stats_item++; | |
1468 | hw_reg_addr += 4; | |
1469 | } | |
1470 | /* update tx status */ | |
1471 | hw_reg_addr = REG_MAC_TX_STATUS_BIN; | |
1472 | stats_item = &adapter->hw_stats.tx_ok; | |
1473 | while (hw_reg_addr <= REG_MAC_TX_STATUS_END) { | |
1474 | AT_READ_REG(&adapter->hw, hw_reg_addr, &data); | |
1475 | *stats_item += data; | |
1476 | stats_item++; | |
1477 | hw_reg_addr += 4; | |
1478 | } | |
1479 | } | |
1480 | ||
49ce9c2c | 1481 | /** |
43250ddd JY |
1482 | * atl1c_get_stats - Get System Network Statistics |
1483 | * @netdev: network interface device structure | |
1484 | * | |
1485 | * Returns the address of the device statistics structure. | |
1486 | * The statistics are actually updated from the timer callback. | |
1487 | */ | |
1488 | static struct net_device_stats *atl1c_get_stats(struct net_device *netdev) | |
1489 | { | |
1490 | struct atl1c_adapter *adapter = netdev_priv(netdev); | |
1491 | struct atl1c_hw_stats *hw_stats = &adapter->hw_stats; | |
a2c483a1 | 1492 | struct net_device_stats *net_stats = &netdev->stats; |
43250ddd JY |
1493 | |
1494 | atl1c_update_hw_stats(adapter); | |
1495 | net_stats->rx_packets = hw_stats->rx_ok; | |
1496 | net_stats->tx_packets = hw_stats->tx_ok; | |
1497 | net_stats->rx_bytes = hw_stats->rx_byte_cnt; | |
1498 | net_stats->tx_bytes = hw_stats->tx_byte_cnt; | |
1499 | net_stats->multicast = hw_stats->rx_mcast; | |
1500 | net_stats->collisions = hw_stats->tx_1_col + | |
1501 | hw_stats->tx_2_col * 2 + | |
1502 | hw_stats->tx_late_col + hw_stats->tx_abort_col; | |
1503 | net_stats->rx_errors = hw_stats->rx_frag + hw_stats->rx_fcs_err + | |
1504 | hw_stats->rx_len_err + hw_stats->rx_sz_ov + | |
1505 | hw_stats->rx_rrd_ov + hw_stats->rx_align_err; | |
1506 | net_stats->rx_fifo_errors = hw_stats->rx_rxf_ov; | |
1507 | net_stats->rx_length_errors = hw_stats->rx_len_err; | |
1508 | net_stats->rx_crc_errors = hw_stats->rx_fcs_err; | |
1509 | net_stats->rx_frame_errors = hw_stats->rx_align_err; | |
1510 | net_stats->rx_over_errors = hw_stats->rx_rrd_ov + hw_stats->rx_rxf_ov; | |
1511 | ||
1512 | net_stats->rx_missed_errors = hw_stats->rx_rrd_ov + hw_stats->rx_rxf_ov; | |
1513 | ||
1514 | net_stats->tx_errors = hw_stats->tx_late_col + hw_stats->tx_abort_col + | |
1515 | hw_stats->tx_underrun + hw_stats->tx_trunc; | |
1516 | net_stats->tx_fifo_errors = hw_stats->tx_underrun; | |
1517 | net_stats->tx_aborted_errors = hw_stats->tx_abort_col; | |
1518 | net_stats->tx_window_errors = hw_stats->tx_late_col; | |
1519 | ||
a2c483a1 | 1520 | return net_stats; |
43250ddd JY |
1521 | } |
1522 | ||
1523 | static inline void atl1c_clear_phy_int(struct atl1c_adapter *adapter) | |
1524 | { | |
1525 | u16 phy_data; | |
1526 | ||
1527 | spin_lock(&adapter->mdio_lock); | |
1528 | atl1c_read_phy_reg(&adapter->hw, MII_ISR, &phy_data); | |
1529 | spin_unlock(&adapter->mdio_lock); | |
1530 | } | |
1531 | ||
1532 | static bool atl1c_clean_tx_irq(struct atl1c_adapter *adapter, | |
1533 | enum atl1c_trans_queue type) | |
1534 | { | |
64699336 | 1535 | struct atl1c_tpd_ring *tpd_ring = &adapter->tpd_ring[type]; |
43250ddd | 1536 | struct atl1c_buffer *buffer_info; |
c6060be4 | 1537 | struct pci_dev *pdev = adapter->pdev; |
43250ddd JY |
1538 | u16 next_to_clean = atomic_read(&tpd_ring->next_to_clean); |
1539 | u16 hw_next_to_clean; | |
0af48336 | 1540 | u16 reg; |
43250ddd | 1541 | |
0af48336 | 1542 | reg = type == atl1c_trans_high ? REG_TPD_PRI1_CIDX : REG_TPD_PRI0_CIDX; |
43250ddd | 1543 | |
0af48336 | 1544 | AT_READ_REGW(&adapter->hw, reg, &hw_next_to_clean); |
43250ddd JY |
1545 | |
1546 | while (next_to_clean != hw_next_to_clean) { | |
1547 | buffer_info = &tpd_ring->buffer_info[next_to_clean]; | |
c6060be4 | 1548 | atl1c_clean_buffer(pdev, buffer_info, 1); |
43250ddd JY |
1549 | if (++next_to_clean == tpd_ring->count) |
1550 | next_to_clean = 0; | |
1551 | atomic_set(&tpd_ring->next_to_clean, next_to_clean); | |
1552 | } | |
1553 | ||
1554 | if (netif_queue_stopped(adapter->netdev) && | |
1555 | netif_carrier_ok(adapter->netdev)) { | |
1556 | netif_wake_queue(adapter->netdev); | |
1557 | } | |
1558 | ||
1559 | return true; | |
1560 | } | |
1561 | ||
49ce9c2c | 1562 | /** |
43250ddd JY |
1563 | * atl1c_intr - Interrupt Handler |
1564 | * @irq: interrupt number | |
1565 | * @data: pointer to a network interface device structure | |
43250ddd JY |
1566 | */ |
1567 | static irqreturn_t atl1c_intr(int irq, void *data) | |
1568 | { | |
1569 | struct net_device *netdev = data; | |
1570 | struct atl1c_adapter *adapter = netdev_priv(netdev); | |
1571 | struct pci_dev *pdev = adapter->pdev; | |
1572 | struct atl1c_hw *hw = &adapter->hw; | |
1573 | int max_ints = AT_MAX_INT_WORK; | |
1574 | int handled = IRQ_NONE; | |
1575 | u32 status; | |
1576 | u32 reg_data; | |
1577 | ||
1578 | do { | |
1579 | AT_READ_REG(hw, REG_ISR, ®_data); | |
1580 | status = reg_data & hw->intr_mask; | |
1581 | ||
1582 | if (status == 0 || (status & ISR_DIS_INT) != 0) { | |
1583 | if (max_ints != AT_MAX_INT_WORK) | |
1584 | handled = IRQ_HANDLED; | |
1585 | break; | |
1586 | } | |
1587 | /* link event */ | |
1588 | if (status & ISR_GPHY) | |
1589 | atl1c_clear_phy_int(adapter); | |
1590 | /* Ack ISR */ | |
1591 | AT_WRITE_REG(hw, REG_ISR, status | ISR_DIS_INT); | |
1592 | if (status & ISR_RX_PKT) { | |
1593 | if (likely(napi_schedule_prep(&adapter->napi))) { | |
1594 | hw->intr_mask &= ~ISR_RX_PKT; | |
1595 | AT_WRITE_REG(hw, REG_IMR, hw->intr_mask); | |
1596 | __napi_schedule(&adapter->napi); | |
1597 | } | |
1598 | } | |
1599 | if (status & ISR_TX_PKT) | |
1600 | atl1c_clean_tx_irq(adapter, atl1c_trans_normal); | |
1601 | ||
1602 | handled = IRQ_HANDLED; | |
1603 | /* check if PCIE PHY Link down */ | |
1604 | if (status & ISR_ERROR) { | |
1605 | if (netif_msg_hw(adapter)) | |
1606 | dev_err(&pdev->dev, | |
1607 | "atl1c hardware error (status = 0x%x)\n", | |
1608 | status & ISR_ERROR); | |
1609 | /* reset MAC */ | |
78315457 | 1610 | set_bit(ATL1C_WORK_EVENT_RESET, &adapter->work_event); |
cb190546 | 1611 | schedule_work(&adapter->common_task); |
8f574b35 | 1612 | return IRQ_HANDLED; |
43250ddd JY |
1613 | } |
1614 | ||
1615 | if (status & ISR_OVER) | |
1616 | if (netif_msg_intr(adapter)) | |
1617 | dev_warn(&pdev->dev, | |
af901ca1 | 1618 | "TX/RX overflow (status = 0x%x)\n", |
43250ddd JY |
1619 | status & ISR_OVER); |
1620 | ||
1621 | /* link event */ | |
1622 | if (status & (ISR_GPHY | ISR_MANUAL)) { | |
a2c483a1 | 1623 | netdev->stats.tx_carrier_errors++; |
43250ddd JY |
1624 | atl1c_link_chg_event(adapter); |
1625 | break; | |
1626 | } | |
1627 | ||
1628 | } while (--max_ints > 0); | |
1629 | /* re-enable Interrupt*/ | |
1630 | AT_WRITE_REG(&adapter->hw, REG_ISR, 0); | |
1631 | return handled; | |
1632 | } | |
1633 | ||
1634 | static inline void atl1c_rx_checksum(struct atl1c_adapter *adapter, | |
1635 | struct sk_buff *skb, struct atl1c_recv_ret_status *prrs) | |
1636 | { | |
1637 | /* | |
1638 | * The pid field in RRS in not correct sometimes, so we | |
1639 | * cannot figure out if the packet is fragmented or not, | |
1640 | * so we tell the KERNEL CHECKSUM_NONE | |
1641 | */ | |
bc8acf2c | 1642 | skb_checksum_none_assert(skb); |
43250ddd JY |
1643 | } |
1644 | ||
9f1fd0ef | 1645 | static int atl1c_alloc_rx_buffer(struct atl1c_adapter *adapter) |
43250ddd | 1646 | { |
9f1fd0ef | 1647 | struct atl1c_rfd_ring *rfd_ring = &adapter->rfd_ring; |
43250ddd JY |
1648 | struct pci_dev *pdev = adapter->pdev; |
1649 | struct atl1c_buffer *buffer_info, *next_info; | |
1650 | struct sk_buff *skb; | |
1651 | void *vir_addr = NULL; | |
1652 | u16 num_alloc = 0; | |
1653 | u16 rfd_next_to_use, next_next; | |
1654 | struct atl1c_rx_free_desc *rfd_desc; | |
1655 | ||
1656 | next_next = rfd_next_to_use = rfd_ring->next_to_use; | |
1657 | if (++next_next == rfd_ring->count) | |
1658 | next_next = 0; | |
1659 | buffer_info = &rfd_ring->buffer_info[rfd_next_to_use]; | |
1660 | next_info = &rfd_ring->buffer_info[next_next]; | |
1661 | ||
c6060be4 | 1662 | while (next_info->flags & ATL1C_BUFFER_FREE) { |
43250ddd JY |
1663 | rfd_desc = ATL1C_RFD_DESC(rfd_ring, rfd_next_to_use); |
1664 | ||
1d266430 | 1665 | skb = netdev_alloc_skb(adapter->netdev, adapter->rx_buffer_len); |
43250ddd JY |
1666 | if (unlikely(!skb)) { |
1667 | if (netif_msg_rx_err(adapter)) | |
1668 | dev_warn(&pdev->dev, "alloc rx buffer failed\n"); | |
1669 | break; | |
1670 | } | |
1671 | ||
1672 | /* | |
1673 | * Make buffer alignment 2 beyond a 16 byte boundary | |
1674 | * this will result in a 16 byte aligned IP header after | |
1675 | * the 14 byte MAC header is removed | |
1676 | */ | |
1677 | vir_addr = skb->data; | |
c6060be4 | 1678 | ATL1C_SET_BUFFER_STATE(buffer_info, ATL1C_BUFFER_BUSY); |
43250ddd JY |
1679 | buffer_info->skb = skb; |
1680 | buffer_info->length = adapter->rx_buffer_len; | |
1681 | buffer_info->dma = pci_map_single(pdev, vir_addr, | |
1682 | buffer_info->length, | |
1683 | PCI_DMA_FROMDEVICE); | |
4b45e342 JY |
1684 | ATL1C_SET_PCIMAP_TYPE(buffer_info, ATL1C_PCIMAP_SINGLE, |
1685 | ATL1C_PCIMAP_FROMDEVICE); | |
43250ddd JY |
1686 | rfd_desc->buffer_addr = cpu_to_le64(buffer_info->dma); |
1687 | rfd_next_to_use = next_next; | |
1688 | if (++next_next == rfd_ring->count) | |
1689 | next_next = 0; | |
1690 | buffer_info = &rfd_ring->buffer_info[rfd_next_to_use]; | |
1691 | next_info = &rfd_ring->buffer_info[next_next]; | |
1692 | num_alloc++; | |
1693 | } | |
1694 | ||
1695 | if (num_alloc) { | |
1696 | /* TODO: update mailbox here */ | |
1697 | wmb(); | |
1698 | rfd_ring->next_to_use = rfd_next_to_use; | |
9f1fd0ef | 1699 | AT_WRITE_REG(&adapter->hw, REG_MB_RFD0_PROD_IDX, |
43250ddd JY |
1700 | rfd_ring->next_to_use & MB_RFDX_PROD_IDX_MASK); |
1701 | } | |
1702 | ||
1703 | return num_alloc; | |
1704 | } | |
1705 | ||
1706 | static void atl1c_clean_rrd(struct atl1c_rrd_ring *rrd_ring, | |
1707 | struct atl1c_recv_ret_status *rrs, u16 num) | |
1708 | { | |
1709 | u16 i; | |
1710 | /* the relationship between rrd and rfd is one map one */ | |
1711 | for (i = 0; i < num; i++, rrs = ATL1C_RRD_DESC(rrd_ring, | |
1712 | rrd_ring->next_to_clean)) { | |
1713 | rrs->word3 &= ~RRS_RXD_UPDATED; | |
1714 | if (++rrd_ring->next_to_clean == rrd_ring->count) | |
1715 | rrd_ring->next_to_clean = 0; | |
1716 | } | |
1717 | } | |
1718 | ||
1719 | static void atl1c_clean_rfd(struct atl1c_rfd_ring *rfd_ring, | |
1720 | struct atl1c_recv_ret_status *rrs, u16 num) | |
1721 | { | |
1722 | u16 i; | |
1723 | u16 rfd_index; | |
1724 | struct atl1c_buffer *buffer_info = rfd_ring->buffer_info; | |
1725 | ||
1726 | rfd_index = (rrs->word0 >> RRS_RX_RFD_INDEX_SHIFT) & | |
1727 | RRS_RX_RFD_INDEX_MASK; | |
1728 | for (i = 0; i < num; i++) { | |
1729 | buffer_info[rfd_index].skb = NULL; | |
c6060be4 JY |
1730 | ATL1C_SET_BUFFER_STATE(&buffer_info[rfd_index], |
1731 | ATL1C_BUFFER_FREE); | |
43250ddd JY |
1732 | if (++rfd_index == rfd_ring->count) |
1733 | rfd_index = 0; | |
1734 | } | |
1735 | rfd_ring->next_to_clean = rfd_index; | |
1736 | } | |
1737 | ||
9f1fd0ef | 1738 | static void atl1c_clean_rx_irq(struct atl1c_adapter *adapter, |
43250ddd JY |
1739 | int *work_done, int work_to_do) |
1740 | { | |
1741 | u16 rfd_num, rfd_index; | |
1742 | u16 count = 0; | |
1743 | u16 length; | |
1744 | struct pci_dev *pdev = adapter->pdev; | |
1745 | struct net_device *netdev = adapter->netdev; | |
9f1fd0ef HX |
1746 | struct atl1c_rfd_ring *rfd_ring = &adapter->rfd_ring; |
1747 | struct atl1c_rrd_ring *rrd_ring = &adapter->rrd_ring; | |
43250ddd JY |
1748 | struct sk_buff *skb; |
1749 | struct atl1c_recv_ret_status *rrs; | |
1750 | struct atl1c_buffer *buffer_info; | |
1751 | ||
1752 | while (1) { | |
1753 | if (*work_done >= work_to_do) | |
1754 | break; | |
1755 | rrs = ATL1C_RRD_DESC(rrd_ring, rrd_ring->next_to_clean); | |
1756 | if (likely(RRS_RXD_IS_VALID(rrs->word3))) { | |
1757 | rfd_num = (rrs->word0 >> RRS_RX_RFD_CNT_SHIFT) & | |
1758 | RRS_RX_RFD_CNT_MASK; | |
37b76c69 | 1759 | if (unlikely(rfd_num != 1)) |
43250ddd JY |
1760 | /* TODO support mul rfd*/ |
1761 | if (netif_msg_rx_err(adapter)) | |
1762 | dev_warn(&pdev->dev, | |
1763 | "Multi rfd not support yet!\n"); | |
1764 | goto rrs_checked; | |
1765 | } else { | |
1766 | break; | |
1767 | } | |
1768 | rrs_checked: | |
1769 | atl1c_clean_rrd(rrd_ring, rrs, rfd_num); | |
1770 | if (rrs->word3 & (RRS_RX_ERR_SUM | RRS_802_3_LEN_ERR)) { | |
1771 | atl1c_clean_rfd(rfd_ring, rrs, rfd_num); | |
1772 | if (netif_msg_rx_err(adapter)) | |
1773 | dev_warn(&pdev->dev, | |
1774 | "wrong packet! rrs word3 is %x\n", | |
1775 | rrs->word3); | |
1776 | continue; | |
1777 | } | |
1778 | ||
1779 | length = le16_to_cpu((rrs->word3 >> RRS_PKT_SIZE_SHIFT) & | |
1780 | RRS_PKT_SIZE_MASK); | |
1781 | /* Good Receive */ | |
1782 | if (likely(rfd_num == 1)) { | |
1783 | rfd_index = (rrs->word0 >> RRS_RX_RFD_INDEX_SHIFT) & | |
1784 | RRS_RX_RFD_INDEX_MASK; | |
1785 | buffer_info = &rfd_ring->buffer_info[rfd_index]; | |
1786 | pci_unmap_single(pdev, buffer_info->dma, | |
1787 | buffer_info->length, PCI_DMA_FROMDEVICE); | |
1788 | skb = buffer_info->skb; | |
1789 | } else { | |
1790 | /* TODO */ | |
1791 | if (netif_msg_rx_err(adapter)) | |
1792 | dev_warn(&pdev->dev, | |
1793 | "Multi rfd not support yet!\n"); | |
1794 | break; | |
1795 | } | |
1796 | atl1c_clean_rfd(rfd_ring, rrs, rfd_num); | |
1797 | skb_put(skb, length - ETH_FCS_LEN); | |
1798 | skb->protocol = eth_type_trans(skb, netdev); | |
43250ddd | 1799 | atl1c_rx_checksum(adapter, skb, rrs); |
46facce9 | 1800 | if (rrs->word3 & RRS_VLAN_INS) { |
43250ddd JY |
1801 | u16 vlan; |
1802 | ||
1803 | AT_TAG_TO_VLAN(rrs->vlan_tag, vlan); | |
1804 | vlan = le16_to_cpu(vlan); | |
46facce9 JP |
1805 | __vlan_hwaccel_put_tag(skb, vlan); |
1806 | } | |
1807 | netif_receive_skb(skb); | |
43250ddd | 1808 | |
43250ddd JY |
1809 | (*work_done)++; |
1810 | count++; | |
1811 | } | |
1812 | if (count) | |
9f1fd0ef | 1813 | atl1c_alloc_rx_buffer(adapter); |
43250ddd JY |
1814 | } |
1815 | ||
49ce9c2c | 1816 | /** |
43250ddd | 1817 | * atl1c_clean - NAPI Rx polling callback |
43250ddd JY |
1818 | */ |
1819 | static int atl1c_clean(struct napi_struct *napi, int budget) | |
1820 | { | |
1821 | struct atl1c_adapter *adapter = | |
1822 | container_of(napi, struct atl1c_adapter, napi); | |
1823 | int work_done = 0; | |
1824 | ||
1825 | /* Keep link state information with original netdev */ | |
1826 | if (!netif_carrier_ok(adapter->netdev)) | |
1827 | goto quit_polling; | |
1828 | /* just enable one RXQ */ | |
9f1fd0ef | 1829 | atl1c_clean_rx_irq(adapter, &work_done, budget); |
43250ddd JY |
1830 | |
1831 | if (work_done < budget) { | |
1832 | quit_polling: | |
1833 | napi_complete(napi); | |
1834 | adapter->hw.intr_mask |= ISR_RX_PKT; | |
1835 | AT_WRITE_REG(&adapter->hw, REG_IMR, adapter->hw.intr_mask); | |
1836 | } | |
1837 | return work_done; | |
1838 | } | |
1839 | ||
1840 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
1841 | ||
1842 | /* | |
1843 | * Polling 'interrupt' - used by things like netconsole to send skbs | |
1844 | * without having to re-enable interrupts. It's not called while | |
1845 | * the interrupt routine is executing. | |
1846 | */ | |
1847 | static void atl1c_netpoll(struct net_device *netdev) | |
1848 | { | |
1849 | struct atl1c_adapter *adapter = netdev_priv(netdev); | |
1850 | ||
1851 | disable_irq(adapter->pdev->irq); | |
1852 | atl1c_intr(adapter->pdev->irq, netdev); | |
1853 | enable_irq(adapter->pdev->irq); | |
1854 | } | |
1855 | #endif | |
1856 | ||
1857 | static inline u16 atl1c_tpd_avail(struct atl1c_adapter *adapter, enum atl1c_trans_queue type) | |
1858 | { | |
1859 | struct atl1c_tpd_ring *tpd_ring = &adapter->tpd_ring[type]; | |
1860 | u16 next_to_use = 0; | |
1861 | u16 next_to_clean = 0; | |
1862 | ||
1863 | next_to_clean = atomic_read(&tpd_ring->next_to_clean); | |
1864 | next_to_use = tpd_ring->next_to_use; | |
1865 | ||
1866 | return (u16)(next_to_clean > next_to_use) ? | |
1867 | (next_to_clean - next_to_use - 1) : | |
1868 | (tpd_ring->count + next_to_clean - next_to_use - 1); | |
1869 | } | |
1870 | ||
1871 | /* | |
1872 | * get next usable tpd | |
1873 | * Note: should call atl1c_tdp_avail to make sure | |
1874 | * there is enough tpd to use | |
1875 | */ | |
1876 | static struct atl1c_tpd_desc *atl1c_get_tpd(struct atl1c_adapter *adapter, | |
1877 | enum atl1c_trans_queue type) | |
1878 | { | |
1879 | struct atl1c_tpd_ring *tpd_ring = &adapter->tpd_ring[type]; | |
1880 | struct atl1c_tpd_desc *tpd_desc; | |
1881 | u16 next_to_use = 0; | |
1882 | ||
1883 | next_to_use = tpd_ring->next_to_use; | |
1884 | if (++tpd_ring->next_to_use == tpd_ring->count) | |
1885 | tpd_ring->next_to_use = 0; | |
1886 | tpd_desc = ATL1C_TPD_DESC(tpd_ring, next_to_use); | |
1887 | memset(tpd_desc, 0, sizeof(struct atl1c_tpd_desc)); | |
1888 | return tpd_desc; | |
1889 | } | |
1890 | ||
1891 | static struct atl1c_buffer * | |
1892 | atl1c_get_tx_buffer(struct atl1c_adapter *adapter, struct atl1c_tpd_desc *tpd) | |
1893 | { | |
1894 | struct atl1c_tpd_ring *tpd_ring = adapter->tpd_ring; | |
1895 | ||
1896 | return &tpd_ring->buffer_info[tpd - | |
1897 | (struct atl1c_tpd_desc *)tpd_ring->desc]; | |
1898 | } | |
1899 | ||
1900 | /* Calculate the transmit packet descript needed*/ | |
1901 | static u16 atl1c_cal_tpd_req(const struct sk_buff *skb) | |
1902 | { | |
1903 | u16 tpd_req; | |
1904 | u16 proto_hdr_len = 0; | |
1905 | ||
1906 | tpd_req = skb_shinfo(skb)->nr_frags + 1; | |
1907 | ||
1908 | if (skb_is_gso(skb)) { | |
1909 | proto_hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); | |
1910 | if (proto_hdr_len < skb_headlen(skb)) | |
1911 | tpd_req++; | |
1912 | if (skb_shinfo(skb)->gso_type & SKB_GSO_TCPV6) | |
1913 | tpd_req++; | |
1914 | } | |
1915 | return tpd_req; | |
1916 | } | |
1917 | ||
1918 | static int atl1c_tso_csum(struct atl1c_adapter *adapter, | |
1919 | struct sk_buff *skb, | |
1920 | struct atl1c_tpd_desc **tpd, | |
1921 | enum atl1c_trans_queue type) | |
1922 | { | |
1923 | struct pci_dev *pdev = adapter->pdev; | |
1924 | u8 hdr_len; | |
1925 | u32 real_len; | |
1926 | unsigned short offload_type; | |
1927 | int err; | |
1928 | ||
1929 | if (skb_is_gso(skb)) { | |
1930 | if (skb_header_cloned(skb)) { | |
1931 | err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); | |
1932 | if (unlikely(err)) | |
1933 | return -1; | |
1934 | } | |
1935 | offload_type = skb_shinfo(skb)->gso_type; | |
1936 | ||
1937 | if (offload_type & SKB_GSO_TCPV4) { | |
1938 | real_len = (((unsigned char *)ip_hdr(skb) - skb->data) | |
1939 | + ntohs(ip_hdr(skb)->tot_len)); | |
1940 | ||
1941 | if (real_len < skb->len) | |
1942 | pskb_trim(skb, real_len); | |
1943 | ||
1944 | hdr_len = (skb_transport_offset(skb) + tcp_hdrlen(skb)); | |
1945 | if (unlikely(skb->len == hdr_len)) { | |
1946 | /* only xsum need */ | |
1947 | if (netif_msg_tx_queued(adapter)) | |
1948 | dev_warn(&pdev->dev, | |
1949 | "IPV4 tso with zero data??\n"); | |
1950 | goto check_sum; | |
1951 | } else { | |
1952 | ip_hdr(skb)->check = 0; | |
1953 | tcp_hdr(skb)->check = ~csum_tcpudp_magic( | |
1954 | ip_hdr(skb)->saddr, | |
1955 | ip_hdr(skb)->daddr, | |
1956 | 0, IPPROTO_TCP, 0); | |
1957 | (*tpd)->word1 |= 1 << TPD_IPV4_PACKET_SHIFT; | |
1958 | } | |
1959 | } | |
1960 | ||
1961 | if (offload_type & SKB_GSO_TCPV6) { | |
1962 | struct atl1c_tpd_ext_desc *etpd = | |
1963 | *(struct atl1c_tpd_ext_desc **)(tpd); | |
1964 | ||
1965 | memset(etpd, 0, sizeof(struct atl1c_tpd_ext_desc)); | |
1966 | *tpd = atl1c_get_tpd(adapter, type); | |
1967 | ipv6_hdr(skb)->payload_len = 0; | |
1968 | /* check payload == 0 byte ? */ | |
1969 | hdr_len = (skb_transport_offset(skb) + tcp_hdrlen(skb)); | |
1970 | if (unlikely(skb->len == hdr_len)) { | |
1971 | /* only xsum need */ | |
1972 | if (netif_msg_tx_queued(adapter)) | |
1973 | dev_warn(&pdev->dev, | |
1974 | "IPV6 tso with zero data??\n"); | |
1975 | goto check_sum; | |
1976 | } else | |
1977 | tcp_hdr(skb)->check = ~csum_ipv6_magic( | |
1978 | &ipv6_hdr(skb)->saddr, | |
1979 | &ipv6_hdr(skb)->daddr, | |
1980 | 0, IPPROTO_TCP, 0); | |
1981 | etpd->word1 |= 1 << TPD_LSO_EN_SHIFT; | |
1982 | etpd->word1 |= 1 << TPD_LSO_VER_SHIFT; | |
1983 | etpd->pkt_len = cpu_to_le32(skb->len); | |
1984 | (*tpd)->word1 |= 1 << TPD_LSO_VER_SHIFT; | |
1985 | } | |
1986 | ||
1987 | (*tpd)->word1 |= 1 << TPD_LSO_EN_SHIFT; | |
1988 | (*tpd)->word1 |= (skb_transport_offset(skb) & TPD_TCPHDR_OFFSET_MASK) << | |
1989 | TPD_TCPHDR_OFFSET_SHIFT; | |
1990 | (*tpd)->word1 |= (skb_shinfo(skb)->gso_size & TPD_MSS_MASK) << | |
1991 | TPD_MSS_SHIFT; | |
1992 | return 0; | |
1993 | } | |
1994 | ||
1995 | check_sum: | |
1996 | if (likely(skb->ip_summed == CHECKSUM_PARTIAL)) { | |
1997 | u8 css, cso; | |
0d0b1672 | 1998 | cso = skb_checksum_start_offset(skb); |
43250ddd JY |
1999 | |
2000 | if (unlikely(cso & 0x1)) { | |
2001 | if (netif_msg_tx_err(adapter)) | |
2002 | dev_err(&adapter->pdev->dev, | |
2003 | "payload offset should not an event number\n"); | |
2004 | return -1; | |
2005 | } else { | |
2006 | css = cso + skb->csum_offset; | |
2007 | ||
2008 | (*tpd)->word1 |= ((cso >> 1) & TPD_PLOADOFFSET_MASK) << | |
2009 | TPD_PLOADOFFSET_SHIFT; | |
2010 | (*tpd)->word1 |= ((css >> 1) & TPD_CCSUM_OFFSET_MASK) << | |
2011 | TPD_CCSUM_OFFSET_SHIFT; | |
2012 | (*tpd)->word1 |= 1 << TPD_CCSUM_EN_SHIFT; | |
2013 | } | |
2014 | } | |
2015 | return 0; | |
2016 | } | |
2017 | ||
2018 | static void atl1c_tx_map(struct atl1c_adapter *adapter, | |
2019 | struct sk_buff *skb, struct atl1c_tpd_desc *tpd, | |
2020 | enum atl1c_trans_queue type) | |
2021 | { | |
2022 | struct atl1c_tpd_desc *use_tpd = NULL; | |
2023 | struct atl1c_buffer *buffer_info = NULL; | |
2024 | u16 buf_len = skb_headlen(skb); | |
2025 | u16 map_len = 0; | |
2026 | u16 mapped_len = 0; | |
2027 | u16 hdr_len = 0; | |
2028 | u16 nr_frags; | |
2029 | u16 f; | |
2030 | int tso; | |
2031 | ||
2032 | nr_frags = skb_shinfo(skb)->nr_frags; | |
2033 | tso = (tpd->word1 >> TPD_LSO_EN_SHIFT) & TPD_LSO_EN_MASK; | |
2034 | if (tso) { | |
2035 | /* TSO */ | |
2036 | map_len = hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); | |
2037 | use_tpd = tpd; | |
2038 | ||
2039 | buffer_info = atl1c_get_tx_buffer(adapter, use_tpd); | |
2040 | buffer_info->length = map_len; | |
2041 | buffer_info->dma = pci_map_single(adapter->pdev, | |
2042 | skb->data, hdr_len, PCI_DMA_TODEVICE); | |
c6060be4 | 2043 | ATL1C_SET_BUFFER_STATE(buffer_info, ATL1C_BUFFER_BUSY); |
4b45e342 JY |
2044 | ATL1C_SET_PCIMAP_TYPE(buffer_info, ATL1C_PCIMAP_SINGLE, |
2045 | ATL1C_PCIMAP_TODEVICE); | |
43250ddd JY |
2046 | mapped_len += map_len; |
2047 | use_tpd->buffer_addr = cpu_to_le64(buffer_info->dma); | |
2048 | use_tpd->buffer_len = cpu_to_le16(buffer_info->length); | |
2049 | } | |
2050 | ||
2051 | if (mapped_len < buf_len) { | |
2052 | /* mapped_len == 0, means we should use the first tpd, | |
2053 | which is given by caller */ | |
2054 | if (mapped_len == 0) | |
2055 | use_tpd = tpd; | |
2056 | else { | |
2057 | use_tpd = atl1c_get_tpd(adapter, type); | |
43250ddd JY |
2058 | memcpy(use_tpd, tpd, sizeof(struct atl1c_tpd_desc)); |
2059 | } | |
2060 | buffer_info = atl1c_get_tx_buffer(adapter, use_tpd); | |
2061 | buffer_info->length = buf_len - mapped_len; | |
2062 | buffer_info->dma = | |
2063 | pci_map_single(adapter->pdev, skb->data + mapped_len, | |
2064 | buffer_info->length, PCI_DMA_TODEVICE); | |
c6060be4 | 2065 | ATL1C_SET_BUFFER_STATE(buffer_info, ATL1C_BUFFER_BUSY); |
4b45e342 JY |
2066 | ATL1C_SET_PCIMAP_TYPE(buffer_info, ATL1C_PCIMAP_SINGLE, |
2067 | ATL1C_PCIMAP_TODEVICE); | |
43250ddd JY |
2068 | use_tpd->buffer_addr = cpu_to_le64(buffer_info->dma); |
2069 | use_tpd->buffer_len = cpu_to_le16(buffer_info->length); | |
2070 | } | |
2071 | ||
2072 | for (f = 0; f < nr_frags; f++) { | |
2073 | struct skb_frag_struct *frag; | |
2074 | ||
2075 | frag = &skb_shinfo(skb)->frags[f]; | |
2076 | ||
2077 | use_tpd = atl1c_get_tpd(adapter, type); | |
2078 | memcpy(use_tpd, tpd, sizeof(struct atl1c_tpd_desc)); | |
2079 | ||
2080 | buffer_info = atl1c_get_tx_buffer(adapter, use_tpd); | |
9e903e08 | 2081 | buffer_info->length = skb_frag_size(frag); |
8d1bb865 IC |
2082 | buffer_info->dma = skb_frag_dma_map(&adapter->pdev->dev, |
2083 | frag, 0, | |
2084 | buffer_info->length, | |
5d6bcdfe | 2085 | DMA_TO_DEVICE); |
c6060be4 | 2086 | ATL1C_SET_BUFFER_STATE(buffer_info, ATL1C_BUFFER_BUSY); |
4b45e342 JY |
2087 | ATL1C_SET_PCIMAP_TYPE(buffer_info, ATL1C_PCIMAP_PAGE, |
2088 | ATL1C_PCIMAP_TODEVICE); | |
43250ddd JY |
2089 | use_tpd->buffer_addr = cpu_to_le64(buffer_info->dma); |
2090 | use_tpd->buffer_len = cpu_to_le16(buffer_info->length); | |
2091 | } | |
2092 | ||
2093 | /* The last tpd */ | |
2094 | use_tpd->word1 |= 1 << TPD_EOP_SHIFT; | |
2095 | /* The last buffer info contain the skb address, | |
2096 | so it will be free after unmap */ | |
2097 | buffer_info->skb = skb; | |
2098 | } | |
2099 | ||
2100 | static void atl1c_tx_queue(struct atl1c_adapter *adapter, struct sk_buff *skb, | |
2101 | struct atl1c_tpd_desc *tpd, enum atl1c_trans_queue type) | |
2102 | { | |
2103 | struct atl1c_tpd_ring *tpd_ring = &adapter->tpd_ring[type]; | |
0af48336 | 2104 | u16 reg; |
43250ddd | 2105 | |
0af48336 HX |
2106 | reg = type == atl1c_trans_high ? REG_TPD_PRI1_PIDX : REG_TPD_PRI0_PIDX; |
2107 | AT_WRITE_REGW(&adapter->hw, reg, tpd_ring->next_to_use); | |
43250ddd JY |
2108 | } |
2109 | ||
61357325 SH |
2110 | static netdev_tx_t atl1c_xmit_frame(struct sk_buff *skb, |
2111 | struct net_device *netdev) | |
43250ddd JY |
2112 | { |
2113 | struct atl1c_adapter *adapter = netdev_priv(netdev); | |
2114 | unsigned long flags; | |
2115 | u16 tpd_req = 1; | |
2116 | struct atl1c_tpd_desc *tpd; | |
2117 | enum atl1c_trans_queue type = atl1c_trans_normal; | |
2118 | ||
2119 | if (test_bit(__AT_DOWN, &adapter->flags)) { | |
2120 | dev_kfree_skb_any(skb); | |
2121 | return NETDEV_TX_OK; | |
2122 | } | |
2123 | ||
2124 | tpd_req = atl1c_cal_tpd_req(skb); | |
2125 | if (!spin_trylock_irqsave(&adapter->tx_lock, flags)) { | |
2126 | if (netif_msg_pktdata(adapter)) | |
2127 | dev_info(&adapter->pdev->dev, "tx locked\n"); | |
2128 | return NETDEV_TX_LOCKED; | |
2129 | } | |
43250ddd JY |
2130 | |
2131 | if (atl1c_tpd_avail(adapter, type) < tpd_req) { | |
2132 | /* no enough descriptor, just stop queue */ | |
2133 | netif_stop_queue(netdev); | |
2134 | spin_unlock_irqrestore(&adapter->tx_lock, flags); | |
2135 | return NETDEV_TX_BUSY; | |
2136 | } | |
2137 | ||
2138 | tpd = atl1c_get_tpd(adapter, type); | |
2139 | ||
2140 | /* do TSO and check sum */ | |
2141 | if (atl1c_tso_csum(adapter, skb, &tpd, type) != 0) { | |
2142 | spin_unlock_irqrestore(&adapter->tx_lock, flags); | |
2143 | dev_kfree_skb_any(skb); | |
2144 | return NETDEV_TX_OK; | |
2145 | } | |
2146 | ||
eab6d18d | 2147 | if (unlikely(vlan_tx_tag_present(skb))) { |
43250ddd JY |
2148 | u16 vlan = vlan_tx_tag_get(skb); |
2149 | __le16 tag; | |
2150 | ||
2151 | vlan = cpu_to_le16(vlan); | |
2152 | AT_VLAN_TO_TAG(vlan, tag); | |
2153 | tpd->word1 |= 1 << TPD_INS_VTAG_SHIFT; | |
2154 | tpd->vlan_tag = tag; | |
2155 | } | |
2156 | ||
2157 | if (skb_network_offset(skb) != ETH_HLEN) | |
2158 | tpd->word1 |= 1 << TPD_ETH_TYPE_SHIFT; /* Ethernet frame */ | |
2159 | ||
2160 | atl1c_tx_map(adapter, skb, tpd, type); | |
2161 | atl1c_tx_queue(adapter, skb, tpd, type); | |
2162 | ||
43250ddd JY |
2163 | spin_unlock_irqrestore(&adapter->tx_lock, flags); |
2164 | return NETDEV_TX_OK; | |
2165 | } | |
2166 | ||
2167 | static void atl1c_free_irq(struct atl1c_adapter *adapter) | |
2168 | { | |
2169 | struct net_device *netdev = adapter->netdev; | |
2170 | ||
2171 | free_irq(adapter->pdev->irq, netdev); | |
2172 | ||
2173 | if (adapter->have_msi) | |
2174 | pci_disable_msi(adapter->pdev); | |
2175 | } | |
2176 | ||
2177 | static int atl1c_request_irq(struct atl1c_adapter *adapter) | |
2178 | { | |
2179 | struct pci_dev *pdev = adapter->pdev; | |
2180 | struct net_device *netdev = adapter->netdev; | |
2181 | int flags = 0; | |
2182 | int err = 0; | |
2183 | ||
2184 | adapter->have_msi = true; | |
2185 | err = pci_enable_msi(adapter->pdev); | |
2186 | if (err) { | |
2187 | if (netif_msg_ifup(adapter)) | |
2188 | dev_err(&pdev->dev, | |
2189 | "Unable to allocate MSI interrupt Error: %d\n", | |
2190 | err); | |
2191 | adapter->have_msi = false; | |
93f7fab4 | 2192 | } |
43250ddd JY |
2193 | |
2194 | if (!adapter->have_msi) | |
2195 | flags |= IRQF_SHARED; | |
9aff7e92 | 2196 | err = request_irq(adapter->pdev->irq, atl1c_intr, flags, |
43250ddd JY |
2197 | netdev->name, netdev); |
2198 | if (err) { | |
2199 | if (netif_msg_ifup(adapter)) | |
2200 | dev_err(&pdev->dev, | |
2201 | "Unable to allocate interrupt Error: %d\n", | |
2202 | err); | |
2203 | if (adapter->have_msi) | |
2204 | pci_disable_msi(adapter->pdev); | |
2205 | return err; | |
2206 | } | |
2207 | if (netif_msg_ifup(adapter)) | |
2208 | dev_dbg(&pdev->dev, "atl1c_request_irq OK\n"); | |
2209 | return err; | |
2210 | } | |
2211 | ||
5e5c0964 HX |
2212 | |
2213 | static void atl1c_reset_dma_ring(struct atl1c_adapter *adapter) | |
2214 | { | |
2215 | /* release tx-pending skbs and reset tx/rx ring index */ | |
2216 | atl1c_clean_tx_ring(adapter, atl1c_trans_normal); | |
2217 | atl1c_clean_tx_ring(adapter, atl1c_trans_high); | |
2218 | atl1c_clean_rx_ring(adapter); | |
2219 | } | |
2220 | ||
0fb1e54e | 2221 | static int atl1c_up(struct atl1c_adapter *adapter) |
43250ddd JY |
2222 | { |
2223 | struct net_device *netdev = adapter->netdev; | |
43250ddd | 2224 | int err; |
43250ddd JY |
2225 | |
2226 | netif_carrier_off(netdev); | |
43250ddd | 2227 | |
5e5c0964 HX |
2228 | err = atl1c_configure(adapter); |
2229 | if (unlikely(err)) | |
43250ddd | 2230 | goto err_up; |
43250ddd JY |
2231 | |
2232 | err = atl1c_request_irq(adapter); | |
2233 | if (unlikely(err)) | |
2234 | goto err_up; | |
2235 | ||
5e5c0964 | 2236 | atl1c_check_link_status(adapter); |
43250ddd JY |
2237 | clear_bit(__AT_DOWN, &adapter->flags); |
2238 | napi_enable(&adapter->napi); | |
2239 | atl1c_irq_enable(adapter); | |
43250ddd JY |
2240 | netif_start_queue(netdev); |
2241 | return err; | |
2242 | ||
2243 | err_up: | |
43250ddd JY |
2244 | atl1c_clean_rx_ring(adapter); |
2245 | return err; | |
2246 | } | |
2247 | ||
0fb1e54e | 2248 | static void atl1c_down(struct atl1c_adapter *adapter) |
43250ddd JY |
2249 | { |
2250 | struct net_device *netdev = adapter->netdev; | |
2251 | ||
2252 | atl1c_del_timer(adapter); | |
cb190546 | 2253 | adapter->work_event = 0; /* clear all event */ |
43250ddd JY |
2254 | /* signal that we're down so the interrupt handler does not |
2255 | * reschedule our watchdog timer */ | |
2256 | set_bit(__AT_DOWN, &adapter->flags); | |
2257 | netif_carrier_off(netdev); | |
2258 | napi_disable(&adapter->napi); | |
2259 | atl1c_irq_disable(adapter); | |
2260 | atl1c_free_irq(adapter); | |
024e1e4d HX |
2261 | /* disable ASPM if device inactive */ |
2262 | atl1c_disable_l0s_l1(&adapter->hw); | |
43250ddd JY |
2263 | /* reset MAC to disable all RX/TX */ |
2264 | atl1c_reset_mac(&adapter->hw); | |
2265 | msleep(1); | |
2266 | ||
2267 | adapter->link_speed = SPEED_0; | |
2268 | adapter->link_duplex = -1; | |
5e5c0964 | 2269 | atl1c_reset_dma_ring(adapter); |
43250ddd JY |
2270 | } |
2271 | ||
49ce9c2c | 2272 | /** |
43250ddd JY |
2273 | * atl1c_open - Called when a network interface is made active |
2274 | * @netdev: network interface device structure | |
2275 | * | |
2276 | * Returns 0 on success, negative value on failure | |
2277 | * | |
2278 | * The open entry point is called when a network interface is made | |
2279 | * active by the system (IFF_UP). At this point all resources needed | |
2280 | * for transmit and receive operations are allocated, the interrupt | |
2281 | * handler is registered with the OS, the watchdog timer is started, | |
2282 | * and the stack is notified that the interface is ready. | |
2283 | */ | |
2284 | static int atl1c_open(struct net_device *netdev) | |
2285 | { | |
2286 | struct atl1c_adapter *adapter = netdev_priv(netdev); | |
2287 | int err; | |
2288 | ||
2289 | /* disallow open during test */ | |
2290 | if (test_bit(__AT_TESTING, &adapter->flags)) | |
2291 | return -EBUSY; | |
2292 | ||
2293 | /* allocate rx/tx dma buffer & descriptors */ | |
2294 | err = atl1c_setup_ring_resources(adapter); | |
2295 | if (unlikely(err)) | |
2296 | return err; | |
2297 | ||
2298 | err = atl1c_up(adapter); | |
2299 | if (unlikely(err)) | |
2300 | goto err_up; | |
2301 | ||
43250ddd JY |
2302 | return 0; |
2303 | ||
2304 | err_up: | |
2305 | atl1c_free_irq(adapter); | |
2306 | atl1c_free_ring_resources(adapter); | |
2307 | atl1c_reset_mac(&adapter->hw); | |
2308 | return err; | |
2309 | } | |
2310 | ||
49ce9c2c | 2311 | /** |
43250ddd JY |
2312 | * atl1c_close - Disables a network interface |
2313 | * @netdev: network interface device structure | |
2314 | * | |
2315 | * Returns 0, this is not allowed to fail | |
2316 | * | |
2317 | * The close entry point is called when an interface is de-activated | |
2318 | * by the OS. The hardware is still under the drivers control, but | |
2319 | * needs to be disabled. A global MAC reset is issued to stop the | |
2320 | * hardware, and all transmit and receive resources are freed. | |
2321 | */ | |
2322 | static int atl1c_close(struct net_device *netdev) | |
2323 | { | |
2324 | struct atl1c_adapter *adapter = netdev_priv(netdev); | |
2325 | ||
2326 | WARN_ON(test_bit(__AT_RESETTING, &adapter->flags)); | |
0aa76ce3 HX |
2327 | set_bit(__AT_DOWN, &adapter->flags); |
2328 | cancel_work_sync(&adapter->common_task); | |
43250ddd JY |
2329 | atl1c_down(adapter); |
2330 | atl1c_free_ring_resources(adapter); | |
2331 | return 0; | |
2332 | } | |
2333 | ||
762e3023 | 2334 | static int atl1c_suspend(struct device *dev) |
43250ddd | 2335 | { |
762e3023 | 2336 | struct pci_dev *pdev = to_pci_dev(dev); |
43250ddd JY |
2337 | struct net_device *netdev = pci_get_drvdata(pdev); |
2338 | struct atl1c_adapter *adapter = netdev_priv(netdev); | |
2339 | struct atl1c_hw *hw = &adapter->hw; | |
43250ddd | 2340 | u32 wufc = adapter->wol; |
43250ddd | 2341 | |
8f574b35 | 2342 | atl1c_disable_l0s_l1(hw); |
43250ddd JY |
2343 | if (netif_running(netdev)) { |
2344 | WARN_ON(test_bit(__AT_RESETTING, &adapter->flags)); | |
2345 | atl1c_down(adapter); | |
2346 | } | |
2347 | netif_device_detach(netdev); | |
8f574b35 JY |
2348 | |
2349 | if (wufc) | |
319d013a | 2350 | if (atl1c_phy_to_ps_link(hw) != 0) |
8f574b35 JY |
2351 | dev_dbg(&pdev->dev, "phy power saving failed"); |
2352 | ||
319d013a | 2353 | atl1c_power_saving(hw, wufc); |
ce5b972b | 2354 | |
43250ddd JY |
2355 | return 0; |
2356 | } | |
2357 | ||
d187c1aa | 2358 | #ifdef CONFIG_PM_SLEEP |
762e3023 | 2359 | static int atl1c_resume(struct device *dev) |
43250ddd | 2360 | { |
762e3023 | 2361 | struct pci_dev *pdev = to_pci_dev(dev); |
43250ddd JY |
2362 | struct net_device *netdev = pci_get_drvdata(pdev); |
2363 | struct atl1c_adapter *adapter = netdev_priv(netdev); | |
2364 | ||
43250ddd | 2365 | AT_WRITE_REG(&adapter->hw, REG_WOL_CTRL, 0); |
ce3ba0c9 | 2366 | atl1c_reset_pcie(&adapter->hw, ATL1C_PCIE_L0S_L1_DISABLE); |
43250ddd JY |
2367 | |
2368 | atl1c_phy_reset(&adapter->hw); | |
2369 | atl1c_reset_mac(&adapter->hw); | |
8f574b35 JY |
2370 | atl1c_phy_init(&adapter->hw); |
2371 | ||
2372 | #if 0 | |
2373 | AT_READ_REG(&adapter->hw, REG_PM_CTRLSTAT, &pm_data); | |
2374 | pm_data &= ~PM_CTRLSTAT_PME_EN; | |
2375 | AT_WRITE_REG(&adapter->hw, REG_PM_CTRLSTAT, pm_data); | |
2376 | #endif | |
2377 | ||
43250ddd JY |
2378 | netif_device_attach(netdev); |
2379 | if (netif_running(netdev)) | |
2380 | atl1c_up(adapter); | |
2381 | ||
2382 | return 0; | |
2383 | } | |
d187c1aa | 2384 | #endif |
43250ddd JY |
2385 | |
2386 | static void atl1c_shutdown(struct pci_dev *pdev) | |
2387 | { | |
762e3023 RW |
2388 | struct net_device *netdev = pci_get_drvdata(pdev); |
2389 | struct atl1c_adapter *adapter = netdev_priv(netdev); | |
2390 | ||
2391 | atl1c_suspend(&pdev->dev); | |
2392 | pci_wake_from_d3(pdev, adapter->wol); | |
2393 | pci_set_power_state(pdev, PCI_D3hot); | |
43250ddd JY |
2394 | } |
2395 | ||
2396 | static const struct net_device_ops atl1c_netdev_ops = { | |
2397 | .ndo_open = atl1c_open, | |
2398 | .ndo_stop = atl1c_close, | |
2399 | .ndo_validate_addr = eth_validate_addr, | |
2400 | .ndo_start_xmit = atl1c_xmit_frame, | |
46facce9 | 2401 | .ndo_set_mac_address = atl1c_set_mac_addr, |
afc4b13d | 2402 | .ndo_set_rx_mode = atl1c_set_multi, |
43250ddd | 2403 | .ndo_change_mtu = atl1c_change_mtu, |
782d640a | 2404 | .ndo_fix_features = atl1c_fix_features, |
46facce9 | 2405 | .ndo_set_features = atl1c_set_features, |
43250ddd JY |
2406 | .ndo_do_ioctl = atl1c_ioctl, |
2407 | .ndo_tx_timeout = atl1c_tx_timeout, | |
2408 | .ndo_get_stats = atl1c_get_stats, | |
43250ddd JY |
2409 | #ifdef CONFIG_NET_POLL_CONTROLLER |
2410 | .ndo_poll_controller = atl1c_netpoll, | |
2411 | #endif | |
2412 | }; | |
2413 | ||
2414 | static int atl1c_init_netdev(struct net_device *netdev, struct pci_dev *pdev) | |
2415 | { | |
2416 | SET_NETDEV_DEV(netdev, &pdev->dev); | |
2417 | pci_set_drvdata(pdev, netdev); | |
2418 | ||
43250ddd JY |
2419 | netdev->netdev_ops = &atl1c_netdev_ops; |
2420 | netdev->watchdog_timeo = AT_TX_WATCHDOG; | |
2421 | atl1c_set_ethtool_ops(netdev); | |
2422 | ||
2423 | /* TODO: add when ready */ | |
782d640a | 2424 | netdev->hw_features = NETIF_F_SG | |
43250ddd | 2425 | NETIF_F_HW_CSUM | |
46facce9 | 2426 | NETIF_F_HW_VLAN_RX | |
43250ddd JY |
2427 | NETIF_F_TSO | |
2428 | NETIF_F_TSO6; | |
782d640a | 2429 | netdev->features = netdev->hw_features | |
46facce9 | 2430 | NETIF_F_HW_VLAN_TX; |
43250ddd JY |
2431 | return 0; |
2432 | } | |
2433 | ||
49ce9c2c | 2434 | /** |
43250ddd JY |
2435 | * atl1c_probe - Device Initialization Routine |
2436 | * @pdev: PCI device information struct | |
2437 | * @ent: entry in atl1c_pci_tbl | |
2438 | * | |
2439 | * Returns 0 on success, negative on failure | |
2440 | * | |
2441 | * atl1c_probe initializes an adapter identified by a pci_dev structure. | |
2442 | * The OS initialization, configuring of the adapter private structure, | |
2443 | * and a hardware reset occur. | |
2444 | */ | |
2445 | static int __devinit atl1c_probe(struct pci_dev *pdev, | |
2446 | const struct pci_device_id *ent) | |
2447 | { | |
2448 | struct net_device *netdev; | |
2449 | struct atl1c_adapter *adapter; | |
2450 | static int cards_found; | |
2451 | ||
2452 | int err = 0; | |
2453 | ||
2454 | /* enable device (incl. PCI PM wakeup and hotplug setup) */ | |
2455 | err = pci_enable_device_mem(pdev); | |
2456 | if (err) { | |
2457 | dev_err(&pdev->dev, "cannot enable PCI device\n"); | |
2458 | return err; | |
2459 | } | |
2460 | ||
2461 | /* | |
2462 | * The atl1c chip can DMA to 64-bit addresses, but it uses a single | |
2463 | * shared register for the high 32 bits, so only a single, aligned, | |
2464 | * 4 GB physical address range can be used at a time. | |
2465 | * | |
2466 | * Supporting 64-bit DMA on this hardware is more trouble than it's | |
2467 | * worth. It is far easier to limit to 32-bit DMA than update | |
2468 | * various kernel subsystems to support the mechanics required by a | |
2469 | * fixed-high-32-bit system. | |
2470 | */ | |
e930438c YH |
2471 | if ((pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) || |
2472 | (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)) { | |
43250ddd JY |
2473 | dev_err(&pdev->dev, "No usable DMA configuration,aborting\n"); |
2474 | goto err_dma; | |
2475 | } | |
2476 | ||
2477 | err = pci_request_regions(pdev, atl1c_driver_name); | |
2478 | if (err) { | |
2479 | dev_err(&pdev->dev, "cannot obtain PCI resources\n"); | |
2480 | goto err_pci_reg; | |
2481 | } | |
2482 | ||
2483 | pci_set_master(pdev); | |
2484 | ||
2485 | netdev = alloc_etherdev(sizeof(struct atl1c_adapter)); | |
2486 | if (netdev == NULL) { | |
2487 | err = -ENOMEM; | |
43250ddd JY |
2488 | goto err_alloc_etherdev; |
2489 | } | |
2490 | ||
2491 | err = atl1c_init_netdev(netdev, pdev); | |
2492 | if (err) { | |
2493 | dev_err(&pdev->dev, "init netdevice failed\n"); | |
2494 | goto err_init_netdev; | |
2495 | } | |
2496 | adapter = netdev_priv(netdev); | |
2497 | adapter->bd_number = cards_found; | |
2498 | adapter->netdev = netdev; | |
2499 | adapter->pdev = pdev; | |
2500 | adapter->hw.adapter = adapter; | |
2501 | adapter->msg_enable = netif_msg_init(-1, atl1c_default_msg); | |
2502 | adapter->hw.hw_addr = ioremap(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0)); | |
2503 | if (!adapter->hw.hw_addr) { | |
2504 | err = -EIO; | |
2505 | dev_err(&pdev->dev, "cannot map device registers\n"); | |
2506 | goto err_ioremap; | |
2507 | } | |
43250ddd JY |
2508 | |
2509 | /* init mii data */ | |
2510 | adapter->mii.dev = netdev; | |
2511 | adapter->mii.mdio_read = atl1c_mdio_read; | |
2512 | adapter->mii.mdio_write = atl1c_mdio_write; | |
2513 | adapter->mii.phy_id_mask = 0x1f; | |
929a5e93 | 2514 | adapter->mii.reg_num_mask = MDIO_CTRL_REG_MASK; |
43250ddd JY |
2515 | netif_napi_add(netdev, &adapter->napi, atl1c_clean, 64); |
2516 | setup_timer(&adapter->phy_config_timer, atl1c_phy_config, | |
2517 | (unsigned long)adapter); | |
2518 | /* setup the private structure */ | |
2519 | err = atl1c_sw_init(adapter); | |
2520 | if (err) { | |
2521 | dev_err(&pdev->dev, "net device private data init failed\n"); | |
2522 | goto err_sw_init; | |
2523 | } | |
ce3ba0c9 | 2524 | atl1c_reset_pcie(&adapter->hw, ATL1C_PCIE_L0S_L1_DISABLE); |
43250ddd JY |
2525 | |
2526 | /* Init GPHY as early as possible due to power saving issue */ | |
2527 | atl1c_phy_reset(&adapter->hw); | |
2528 | ||
2529 | err = atl1c_reset_mac(&adapter->hw); | |
2530 | if (err) { | |
2531 | err = -EIO; | |
2532 | goto err_reset; | |
2533 | } | |
2534 | ||
43250ddd JY |
2535 | /* reset the controller to |
2536 | * put the device in a known good starting state */ | |
2537 | err = atl1c_phy_init(&adapter->hw); | |
2538 | if (err) { | |
2539 | err = -EIO; | |
2540 | goto err_reset; | |
2541 | } | |
6a214fd4 DK |
2542 | if (atl1c_read_mac_addr(&adapter->hw)) { |
2543 | /* got a random MAC address, set NET_ADDR_RANDOM to netdev */ | |
2544 | netdev->addr_assign_type |= NET_ADDR_RANDOM; | |
43250ddd JY |
2545 | } |
2546 | memcpy(netdev->dev_addr, adapter->hw.mac_addr, netdev->addr_len); | |
2547 | memcpy(netdev->perm_addr, adapter->hw.mac_addr, netdev->addr_len); | |
2548 | if (netif_msg_probe(adapter)) | |
82991172 | 2549 | dev_dbg(&pdev->dev, "mac address : %pM\n", |
2550 | adapter->hw.mac_addr); | |
43250ddd | 2551 | |
229e6b6e | 2552 | atl1c_hw_set_mac_addr(&adapter->hw, adapter->hw.mac_addr); |
cb190546 JY |
2553 | INIT_WORK(&adapter->common_task, atl1c_common_task); |
2554 | adapter->work_event = 0; | |
43250ddd JY |
2555 | err = register_netdev(netdev); |
2556 | if (err) { | |
2557 | dev_err(&pdev->dev, "register netdevice failed\n"); | |
2558 | goto err_register; | |
2559 | } | |
2560 | ||
2561 | if (netif_msg_probe(adapter)) | |
2562 | dev_info(&pdev->dev, "version %s\n", ATL1C_DRV_VERSION); | |
2563 | cards_found++; | |
2564 | return 0; | |
2565 | ||
2566 | err_reset: | |
2567 | err_register: | |
2568 | err_sw_init: | |
43250ddd JY |
2569 | iounmap(adapter->hw.hw_addr); |
2570 | err_init_netdev: | |
2571 | err_ioremap: | |
2572 | free_netdev(netdev); | |
2573 | err_alloc_etherdev: | |
2574 | pci_release_regions(pdev); | |
2575 | err_pci_reg: | |
2576 | err_dma: | |
2577 | pci_disable_device(pdev); | |
2578 | return err; | |
2579 | } | |
2580 | ||
49ce9c2c | 2581 | /** |
43250ddd JY |
2582 | * atl1c_remove - Device Removal Routine |
2583 | * @pdev: PCI device information struct | |
2584 | * | |
2585 | * atl1c_remove is called by the PCI subsystem to alert the driver | |
2586 | * that it should release a PCI device. The could be caused by a | |
2587 | * Hot-Plug event, or because the driver is going to be removed from | |
2588 | * memory. | |
2589 | */ | |
2590 | static void __devexit atl1c_remove(struct pci_dev *pdev) | |
2591 | { | |
2592 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2593 | struct atl1c_adapter *adapter = netdev_priv(netdev); | |
2594 | ||
2595 | unregister_netdev(netdev); | |
229e6b6e HX |
2596 | /* restore permanent address */ |
2597 | atl1c_hw_set_mac_addr(&adapter->hw, adapter->hw.perm_mac_addr); | |
43250ddd JY |
2598 | atl1c_phy_disable(&adapter->hw); |
2599 | ||
2600 | iounmap(adapter->hw.hw_addr); | |
2601 | ||
2602 | pci_release_regions(pdev); | |
2603 | pci_disable_device(pdev); | |
2604 | free_netdev(netdev); | |
2605 | } | |
2606 | ||
49ce9c2c | 2607 | /** |
43250ddd JY |
2608 | * atl1c_io_error_detected - called when PCI error is detected |
2609 | * @pdev: Pointer to PCI device | |
2610 | * @state: The current pci connection state | |
2611 | * | |
2612 | * This function is called after a PCI bus error affecting | |
2613 | * this device has been detected. | |
2614 | */ | |
2615 | static pci_ers_result_t atl1c_io_error_detected(struct pci_dev *pdev, | |
2616 | pci_channel_state_t state) | |
2617 | { | |
2618 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2619 | struct atl1c_adapter *adapter = netdev_priv(netdev); | |
2620 | ||
2621 | netif_device_detach(netdev); | |
2622 | ||
005fb4f0 DN |
2623 | if (state == pci_channel_io_perm_failure) |
2624 | return PCI_ERS_RESULT_DISCONNECT; | |
2625 | ||
43250ddd JY |
2626 | if (netif_running(netdev)) |
2627 | atl1c_down(adapter); | |
2628 | ||
2629 | pci_disable_device(pdev); | |
2630 | ||
2631 | /* Request a slot slot reset. */ | |
2632 | return PCI_ERS_RESULT_NEED_RESET; | |
2633 | } | |
2634 | ||
49ce9c2c | 2635 | /** |
43250ddd JY |
2636 | * atl1c_io_slot_reset - called after the pci bus has been reset. |
2637 | * @pdev: Pointer to PCI device | |
2638 | * | |
2639 | * Restart the card from scratch, as if from a cold-boot. Implementation | |
2640 | * resembles the first-half of the e1000_resume routine. | |
2641 | */ | |
2642 | static pci_ers_result_t atl1c_io_slot_reset(struct pci_dev *pdev) | |
2643 | { | |
2644 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2645 | struct atl1c_adapter *adapter = netdev_priv(netdev); | |
2646 | ||
2647 | if (pci_enable_device(pdev)) { | |
2648 | if (netif_msg_hw(adapter)) | |
2649 | dev_err(&pdev->dev, | |
2650 | "Cannot re-enable PCI device after reset\n"); | |
2651 | return PCI_ERS_RESULT_DISCONNECT; | |
2652 | } | |
2653 | pci_set_master(pdev); | |
2654 | ||
2655 | pci_enable_wake(pdev, PCI_D3hot, 0); | |
2656 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
2657 | ||
2658 | atl1c_reset_mac(&adapter->hw); | |
2659 | ||
2660 | return PCI_ERS_RESULT_RECOVERED; | |
2661 | } | |
2662 | ||
49ce9c2c | 2663 | /** |
43250ddd JY |
2664 | * atl1c_io_resume - called when traffic can start flowing again. |
2665 | * @pdev: Pointer to PCI device | |
2666 | * | |
2667 | * This callback is called when the error recovery driver tells us that | |
2668 | * its OK to resume normal operation. Implementation resembles the | |
2669 | * second-half of the atl1c_resume routine. | |
2670 | */ | |
2671 | static void atl1c_io_resume(struct pci_dev *pdev) | |
2672 | { | |
2673 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2674 | struct atl1c_adapter *adapter = netdev_priv(netdev); | |
2675 | ||
2676 | if (netif_running(netdev)) { | |
2677 | if (atl1c_up(adapter)) { | |
2678 | if (netif_msg_hw(adapter)) | |
2679 | dev_err(&pdev->dev, | |
2680 | "Cannot bring device back up after reset\n"); | |
2681 | return; | |
2682 | } | |
2683 | } | |
2684 | ||
2685 | netif_device_attach(netdev); | |
2686 | } | |
2687 | ||
3646f0e5 | 2688 | static const struct pci_error_handlers atl1c_err_handler = { |
43250ddd JY |
2689 | .error_detected = atl1c_io_error_detected, |
2690 | .slot_reset = atl1c_io_slot_reset, | |
2691 | .resume = atl1c_io_resume, | |
2692 | }; | |
2693 | ||
762e3023 RW |
2694 | static SIMPLE_DEV_PM_OPS(atl1c_pm_ops, atl1c_suspend, atl1c_resume); |
2695 | ||
43250ddd JY |
2696 | static struct pci_driver atl1c_driver = { |
2697 | .name = atl1c_driver_name, | |
2698 | .id_table = atl1c_pci_tbl, | |
2699 | .probe = atl1c_probe, | |
2700 | .remove = __devexit_p(atl1c_remove), | |
43250ddd | 2701 | .shutdown = atl1c_shutdown, |
762e3023 RW |
2702 | .err_handler = &atl1c_err_handler, |
2703 | .driver.pm = &atl1c_pm_ops, | |
43250ddd JY |
2704 | }; |
2705 | ||
49ce9c2c | 2706 | /** |
43250ddd JY |
2707 | * atl1c_init_module - Driver Registration Routine |
2708 | * | |
2709 | * atl1c_init_module is the first routine called when the driver is | |
2710 | * loaded. All it does is register with the PCI subsystem. | |
2711 | */ | |
2712 | static int __init atl1c_init_module(void) | |
2713 | { | |
2714 | return pci_register_driver(&atl1c_driver); | |
2715 | } | |
2716 | ||
49ce9c2c | 2717 | /** |
43250ddd JY |
2718 | * atl1c_exit_module - Driver Exit Cleanup Routine |
2719 | * | |
2720 | * atl1c_exit_module is called just before the driver is removed | |
2721 | * from memory. | |
2722 | */ | |
2723 | static void __exit atl1c_exit_module(void) | |
2724 | { | |
2725 | pci_unregister_driver(&atl1c_driver); | |
2726 | } | |
2727 | ||
2728 | module_init(atl1c_init_module); | |
2729 | module_exit(atl1c_exit_module); |