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 | ||
ac574804 | 24 | #define ATL1C_DRV_VERSION "1.0.1.1-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 | 419 | { |
f646968f | 420 | if (features & NETIF_F_HW_VLAN_CTAG_RX) { |
46facce9 JP |
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); | |
475 | ||
229e6b6e | 476 | atl1c_hw_set_mac_addr(&adapter->hw, adapter->hw.mac_addr); |
43250ddd JY |
477 | |
478 | return 0; | |
479 | } | |
480 | ||
481 | static void atl1c_set_rxbufsize(struct atl1c_adapter *adapter, | |
482 | struct net_device *dev) | |
483 | { | |
7b701764 | 484 | unsigned int head_size; |
43250ddd JY |
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; | |
7b701764 ED |
489 | |
490 | head_size = SKB_DATA_ALIGN(adapter->rx_buffer_len + NET_SKB_PAD) + | |
491 | SKB_DATA_ALIGN(sizeof(struct skb_shared_info)); | |
492 | adapter->rx_frag_size = roundup_pow_of_two(head_size); | |
43250ddd | 493 | } |
782d640a | 494 | |
c8f44aff MM |
495 | static netdev_features_t atl1c_fix_features(struct net_device *netdev, |
496 | netdev_features_t features) | |
782d640a | 497 | { |
46facce9 JP |
498 | /* |
499 | * Since there is no support for separate rx/tx vlan accel | |
500 | * enable/disable make sure tx flag is always in same state as rx. | |
501 | */ | |
f646968f PM |
502 | if (features & NETIF_F_HW_VLAN_CTAG_RX) |
503 | features |= NETIF_F_HW_VLAN_CTAG_TX; | |
46facce9 | 504 | else |
f646968f | 505 | features &= ~NETIF_F_HW_VLAN_CTAG_TX; |
46facce9 | 506 | |
782d640a MM |
507 | if (netdev->mtu > MAX_TSO_FRAME_SIZE) |
508 | features &= ~(NETIF_F_TSO | NETIF_F_TSO6); | |
509 | ||
510 | return features; | |
511 | } | |
512 | ||
c8f44aff MM |
513 | static int atl1c_set_features(struct net_device *netdev, |
514 | netdev_features_t features) | |
46facce9 | 515 | { |
c8f44aff | 516 | netdev_features_t changed = netdev->features ^ features; |
46facce9 | 517 | |
f646968f | 518 | if (changed & NETIF_F_HW_VLAN_CTAG_RX) |
46facce9 JP |
519 | atl1c_vlan_mode(netdev, features); |
520 | ||
521 | return 0; | |
522 | } | |
523 | ||
49ce9c2c | 524 | /** |
43250ddd JY |
525 | * atl1c_change_mtu - Change the Maximum Transfer Unit |
526 | * @netdev: network interface device structure | |
527 | * @new_mtu: new value for maximum frame size | |
528 | * | |
529 | * Returns 0 on success, negative on failure | |
530 | */ | |
531 | static int atl1c_change_mtu(struct net_device *netdev, int new_mtu) | |
532 | { | |
533 | struct atl1c_adapter *adapter = netdev_priv(netdev); | |
c08b9b2a | 534 | struct atl1c_hw *hw = &adapter->hw; |
43250ddd JY |
535 | int old_mtu = netdev->mtu; |
536 | int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN; | |
537 | ||
c08b9b2a HX |
538 | /* Fast Ethernet controller doesn't support jumbo packet */ |
539 | if (((hw->nic_type == athr_l2c || | |
540 | hw->nic_type == athr_l2c_b || | |
541 | hw->nic_type == athr_l2c_b2) && new_mtu > ETH_DATA_LEN) || | |
542 | max_frame < ETH_ZLEN + ETH_FCS_LEN || | |
543 | max_frame > MAX_JUMBO_FRAME_SIZE) { | |
43250ddd JY |
544 | if (netif_msg_link(adapter)) |
545 | dev_warn(&adapter->pdev->dev, "invalid MTU setting\n"); | |
546 | return -EINVAL; | |
547 | } | |
548 | /* set MTU */ | |
549 | if (old_mtu != new_mtu && netif_running(netdev)) { | |
550 | while (test_and_set_bit(__AT_RESETTING, &adapter->flags)) | |
551 | msleep(1); | |
552 | netdev->mtu = new_mtu; | |
553 | adapter->hw.max_frame_size = new_mtu; | |
554 | atl1c_set_rxbufsize(adapter, netdev); | |
555 | atl1c_down(adapter); | |
782d640a | 556 | netdev_update_features(netdev); |
43250ddd JY |
557 | atl1c_up(adapter); |
558 | clear_bit(__AT_RESETTING, &adapter->flags); | |
43250ddd JY |
559 | } |
560 | return 0; | |
561 | } | |
562 | ||
563 | /* | |
564 | * caller should hold mdio_lock | |
565 | */ | |
566 | static int atl1c_mdio_read(struct net_device *netdev, int phy_id, int reg_num) | |
567 | { | |
568 | struct atl1c_adapter *adapter = netdev_priv(netdev); | |
569 | u16 result; | |
570 | ||
2528a5dc | 571 | atl1c_read_phy_reg(&adapter->hw, reg_num, &result); |
43250ddd JY |
572 | return result; |
573 | } | |
574 | ||
575 | static void atl1c_mdio_write(struct net_device *netdev, int phy_id, | |
576 | int reg_num, int val) | |
577 | { | |
578 | struct atl1c_adapter *adapter = netdev_priv(netdev); | |
579 | ||
2528a5dc | 580 | atl1c_write_phy_reg(&adapter->hw, reg_num, val); |
43250ddd JY |
581 | } |
582 | ||
43250ddd JY |
583 | static int atl1c_mii_ioctl(struct net_device *netdev, |
584 | struct ifreq *ifr, int cmd) | |
585 | { | |
586 | struct atl1c_adapter *adapter = netdev_priv(netdev); | |
587 | struct pci_dev *pdev = adapter->pdev; | |
588 | struct mii_ioctl_data *data = if_mii(ifr); | |
589 | unsigned long flags; | |
590 | int retval = 0; | |
591 | ||
592 | if (!netif_running(netdev)) | |
593 | return -EINVAL; | |
594 | ||
595 | spin_lock_irqsave(&adapter->mdio_lock, flags); | |
596 | switch (cmd) { | |
597 | case SIOCGMIIPHY: | |
598 | data->phy_id = 0; | |
599 | break; | |
600 | ||
601 | case SIOCGMIIREG: | |
43250ddd JY |
602 | if (atl1c_read_phy_reg(&adapter->hw, data->reg_num & 0x1F, |
603 | &data->val_out)) { | |
604 | retval = -EIO; | |
605 | goto out; | |
606 | } | |
607 | break; | |
608 | ||
609 | case SIOCSMIIREG: | |
43250ddd JY |
610 | if (data->reg_num & ~(0x1F)) { |
611 | retval = -EFAULT; | |
612 | goto out; | |
613 | } | |
614 | ||
615 | dev_dbg(&pdev->dev, "<atl1c_mii_ioctl> write %x %x", | |
616 | data->reg_num, data->val_in); | |
617 | if (atl1c_write_phy_reg(&adapter->hw, | |
618 | data->reg_num, data->val_in)) { | |
619 | retval = -EIO; | |
620 | goto out; | |
621 | } | |
622 | break; | |
623 | ||
624 | default: | |
625 | retval = -EOPNOTSUPP; | |
626 | break; | |
627 | } | |
628 | out: | |
629 | spin_unlock_irqrestore(&adapter->mdio_lock, flags); | |
630 | return retval; | |
631 | } | |
632 | ||
43250ddd JY |
633 | static int atl1c_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) |
634 | { | |
635 | switch (cmd) { | |
636 | case SIOCGMIIPHY: | |
637 | case SIOCGMIIREG: | |
638 | case SIOCSMIIREG: | |
639 | return atl1c_mii_ioctl(netdev, ifr, cmd); | |
640 | default: | |
641 | return -EOPNOTSUPP; | |
642 | } | |
643 | } | |
644 | ||
49ce9c2c | 645 | /** |
43250ddd JY |
646 | * atl1c_alloc_queues - Allocate memory for all rings |
647 | * @adapter: board private structure to initialize | |
648 | * | |
649 | */ | |
093d369d | 650 | static int atl1c_alloc_queues(struct atl1c_adapter *adapter) |
43250ddd JY |
651 | { |
652 | return 0; | |
653 | } | |
654 | ||
655 | static void atl1c_set_mac_type(struct atl1c_hw *hw) | |
656 | { | |
657 | switch (hw->device_id) { | |
658 | case PCI_DEVICE_ID_ATTANSIC_L2C: | |
659 | hw->nic_type = athr_l2c; | |
660 | break; | |
43250ddd JY |
661 | case PCI_DEVICE_ID_ATTANSIC_L1C: |
662 | hw->nic_type = athr_l1c; | |
663 | break; | |
496c185c LR |
664 | case PCI_DEVICE_ID_ATHEROS_L2C_B: |
665 | hw->nic_type = athr_l2c_b; | |
666 | break; | |
667 | case PCI_DEVICE_ID_ATHEROS_L2C_B2: | |
668 | hw->nic_type = athr_l2c_b2; | |
669 | break; | |
670 | case PCI_DEVICE_ID_ATHEROS_L1D: | |
671 | hw->nic_type = athr_l1d; | |
672 | break; | |
8f574b35 JY |
673 | case PCI_DEVICE_ID_ATHEROS_L1D_2_0: |
674 | hw->nic_type = athr_l1d_2; | |
675 | break; | |
43250ddd JY |
676 | default: |
677 | break; | |
678 | } | |
679 | } | |
680 | ||
681 | static int atl1c_setup_mac_funcs(struct atl1c_hw *hw) | |
682 | { | |
43250ddd JY |
683 | u32 link_ctrl_data; |
684 | ||
685 | atl1c_set_mac_type(hw); | |
43250ddd JY |
686 | AT_READ_REG(hw, REG_LINK_CTRL, &link_ctrl_data); |
687 | ||
8f574b35 | 688 | hw->ctrl_flags = ATL1C_INTR_MODRT_ENABLE | |
43250ddd | 689 | ATL1C_TXQ_MODE_ENHANCE; |
024e1e4d HX |
690 | hw->ctrl_flags |= ATL1C_ASPM_L0S_SUPPORT | |
691 | ATL1C_ASPM_L1_SUPPORT; | |
8f574b35 | 692 | hw->ctrl_flags |= ATL1C_ASPM_CTRL_MON; |
43250ddd | 693 | |
496c185c | 694 | if (hw->nic_type == athr_l1c || |
8f574b35 JY |
695 | hw->nic_type == athr_l1d || |
696 | hw->nic_type == athr_l1d_2) | |
496c185c | 697 | hw->link_cap_flags |= ATL1C_LINK_CAP_1000M; |
43250ddd JY |
698 | return 0; |
699 | } | |
903d7ce0 HX |
700 | |
701 | struct atl1c_platform_patch { | |
702 | u16 pci_did; | |
703 | u8 pci_revid; | |
704 | u16 subsystem_vid; | |
705 | u16 subsystem_did; | |
706 | u32 patch_flag; | |
707 | #define ATL1C_LINK_PATCH 0x1 | |
708 | }; | |
093d369d | 709 | static const struct atl1c_platform_patch plats[] = { |
903d7ce0 HX |
710 | {0x2060, 0xC1, 0x1019, 0x8152, 0x1}, |
711 | {0x2060, 0xC1, 0x1019, 0x2060, 0x1}, | |
712 | {0x2060, 0xC1, 0x1019, 0xE000, 0x1}, | |
713 | {0x2062, 0xC0, 0x1019, 0x8152, 0x1}, | |
714 | {0x2062, 0xC0, 0x1019, 0x2062, 0x1}, | |
715 | {0x2062, 0xC0, 0x1458, 0xE000, 0x1}, | |
716 | {0x2062, 0xC1, 0x1019, 0x8152, 0x1}, | |
717 | {0x2062, 0xC1, 0x1019, 0x2062, 0x1}, | |
718 | {0x2062, 0xC1, 0x1458, 0xE000, 0x1}, | |
719 | {0x2062, 0xC1, 0x1565, 0x2802, 0x1}, | |
720 | {0x2062, 0xC1, 0x1565, 0x2801, 0x1}, | |
721 | {0x1073, 0xC0, 0x1019, 0x8151, 0x1}, | |
722 | {0x1073, 0xC0, 0x1019, 0x1073, 0x1}, | |
723 | {0x1073, 0xC0, 0x1458, 0xE000, 0x1}, | |
724 | {0x1083, 0xC0, 0x1458, 0xE000, 0x1}, | |
725 | {0x1083, 0xC0, 0x1019, 0x8151, 0x1}, | |
726 | {0x1083, 0xC0, 0x1019, 0x1083, 0x1}, | |
727 | {0x1083, 0xC0, 0x1462, 0x7680, 0x1}, | |
728 | {0x1083, 0xC0, 0x1565, 0x2803, 0x1}, | |
729 | {0}, | |
730 | }; | |
731 | ||
093d369d | 732 | static void atl1c_patch_assign(struct atl1c_hw *hw) |
903d7ce0 | 733 | { |
fa0afcd1 CR |
734 | struct pci_dev *pdev = hw->adapter->pdev; |
735 | u32 misc_ctrl; | |
903d7ce0 HX |
736 | int i = 0; |
737 | ||
738 | hw->msi_lnkpatch = false; | |
739 | ||
740 | while (plats[i].pci_did != 0) { | |
741 | if (plats[i].pci_did == hw->device_id && | |
742 | plats[i].pci_revid == hw->revision_id && | |
743 | plats[i].subsystem_vid == hw->subsystem_vendor_id && | |
744 | plats[i].subsystem_did == hw->subsystem_id) { | |
745 | if (plats[i].patch_flag & ATL1C_LINK_PATCH) | |
746 | hw->msi_lnkpatch = true; | |
747 | } | |
748 | i++; | |
749 | } | |
fa0afcd1 CR |
750 | |
751 | if (hw->device_id == PCI_DEVICE_ID_ATHEROS_L2C_B2 && | |
752 | hw->revision_id == L2CB_V21) { | |
753 | /* config acess mode */ | |
754 | pci_write_config_dword(pdev, REG_PCIE_IND_ACC_ADDR, | |
755 | REG_PCIE_DEV_MISC_CTRL); | |
756 | pci_read_config_dword(pdev, REG_PCIE_IND_ACC_DATA, &misc_ctrl); | |
757 | misc_ctrl &= ~0x100; | |
758 | pci_write_config_dword(pdev, REG_PCIE_IND_ACC_ADDR, | |
759 | REG_PCIE_DEV_MISC_CTRL); | |
760 | pci_write_config_dword(pdev, REG_PCIE_IND_ACC_DATA, misc_ctrl); | |
761 | } | |
903d7ce0 | 762 | } |
49ce9c2c | 763 | /** |
43250ddd JY |
764 | * atl1c_sw_init - Initialize general software structures (struct atl1c_adapter) |
765 | * @adapter: board private structure to initialize | |
766 | * | |
767 | * atl1c_sw_init initializes the Adapter private data structure. | |
768 | * Fields are initialized based on PCI device information and | |
769 | * OS network device settings (MTU size). | |
770 | */ | |
093d369d | 771 | static int atl1c_sw_init(struct atl1c_adapter *adapter) |
43250ddd JY |
772 | { |
773 | struct atl1c_hw *hw = &adapter->hw; | |
774 | struct pci_dev *pdev = adapter->pdev; | |
8f574b35 JY |
775 | u32 revision; |
776 | ||
43250ddd JY |
777 | |
778 | adapter->wol = 0; | |
762e3023 | 779 | device_set_wakeup_enable(&pdev->dev, false); |
43250ddd JY |
780 | adapter->link_speed = SPEED_0; |
781 | adapter->link_duplex = FULL_DUPLEX; | |
43250ddd | 782 | adapter->tpd_ring[0].count = 1024; |
9f1fd0ef | 783 | adapter->rfd_ring.count = 512; |
43250ddd JY |
784 | |
785 | hw->vendor_id = pdev->vendor; | |
786 | hw->device_id = pdev->device; | |
787 | hw->subsystem_vendor_id = pdev->subsystem_vendor; | |
788 | hw->subsystem_id = pdev->subsystem_device; | |
fa0afcd1 | 789 | pci_read_config_dword(pdev, PCI_CLASS_REVISION, &revision); |
8f574b35 | 790 | hw->revision_id = revision & 0xFF; |
43250ddd JY |
791 | /* before link up, we assume hibernate is true */ |
792 | hw->hibernate = true; | |
793 | hw->media_type = MEDIA_TYPE_AUTO_SENSOR; | |
794 | if (atl1c_setup_mac_funcs(hw) != 0) { | |
795 | dev_err(&pdev->dev, "set mac function pointers failed\n"); | |
796 | return -1; | |
797 | } | |
903d7ce0 HX |
798 | atl1c_patch_assign(hw); |
799 | ||
43250ddd JY |
800 | hw->intr_mask = IMR_NORMAL_MASK; |
801 | hw->phy_configured = false; | |
802 | hw->preamble_len = 7; | |
803 | hw->max_frame_size = adapter->netdev->mtu; | |
43250ddd JY |
804 | hw->autoneg_advertised = ADVERTISED_Autoneg; |
805 | hw->indirect_tab = 0xE4E4E4E4; | |
806 | hw->base_cpu = 0; | |
807 | ||
808 | hw->ict = 50000; /* 100ms */ | |
809 | hw->smb_timer = 200000; /* 400ms */ | |
43250ddd JY |
810 | hw->rx_imt = 200; |
811 | hw->tx_imt = 1000; | |
812 | ||
813 | hw->tpd_burst = 5; | |
814 | hw->rfd_burst = 8; | |
815 | hw->dma_order = atl1c_dma_ord_out; | |
816 | hw->dmar_block = atl1c_dma_req_1024; | |
43250ddd JY |
817 | |
818 | if (atl1c_alloc_queues(adapter)) { | |
819 | dev_err(&pdev->dev, "Unable to allocate memory for queues\n"); | |
820 | return -ENOMEM; | |
821 | } | |
822 | /* TODO */ | |
823 | atl1c_set_rxbufsize(adapter, adapter->netdev); | |
824 | atomic_set(&adapter->irq_sem, 1); | |
825 | spin_lock_init(&adapter->mdio_lock); | |
826 | spin_lock_init(&adapter->tx_lock); | |
827 | set_bit(__AT_DOWN, &adapter->flags); | |
828 | ||
829 | return 0; | |
830 | } | |
831 | ||
c6060be4 JY |
832 | static inline void atl1c_clean_buffer(struct pci_dev *pdev, |
833 | struct atl1c_buffer *buffer_info, int in_irq) | |
834 | { | |
4b45e342 | 835 | u16 pci_driection; |
c6060be4 JY |
836 | if (buffer_info->flags & ATL1C_BUFFER_FREE) |
837 | return; | |
838 | if (buffer_info->dma) { | |
4b45e342 JY |
839 | if (buffer_info->flags & ATL1C_PCIMAP_FROMDEVICE) |
840 | pci_driection = PCI_DMA_FROMDEVICE; | |
841 | else | |
842 | pci_driection = PCI_DMA_TODEVICE; | |
843 | ||
c6060be4 JY |
844 | if (buffer_info->flags & ATL1C_PCIMAP_SINGLE) |
845 | pci_unmap_single(pdev, buffer_info->dma, | |
4b45e342 | 846 | buffer_info->length, pci_driection); |
c6060be4 JY |
847 | else if (buffer_info->flags & ATL1C_PCIMAP_PAGE) |
848 | pci_unmap_page(pdev, buffer_info->dma, | |
4b45e342 | 849 | buffer_info->length, pci_driection); |
c6060be4 JY |
850 | } |
851 | if (buffer_info->skb) { | |
852 | if (in_irq) | |
853 | dev_kfree_skb_irq(buffer_info->skb); | |
854 | else | |
855 | dev_kfree_skb(buffer_info->skb); | |
856 | } | |
857 | buffer_info->dma = 0; | |
858 | buffer_info->skb = NULL; | |
859 | ATL1C_SET_BUFFER_STATE(buffer_info, ATL1C_BUFFER_FREE); | |
860 | } | |
49ce9c2c | 861 | /** |
43250ddd JY |
862 | * atl1c_clean_tx_ring - Free Tx-skb |
863 | * @adapter: board private structure | |
864 | */ | |
865 | static void atl1c_clean_tx_ring(struct atl1c_adapter *adapter, | |
866 | enum atl1c_trans_queue type) | |
867 | { | |
868 | struct atl1c_tpd_ring *tpd_ring = &adapter->tpd_ring[type]; | |
869 | struct atl1c_buffer *buffer_info; | |
870 | struct pci_dev *pdev = adapter->pdev; | |
871 | u16 index, ring_count; | |
872 | ||
873 | ring_count = tpd_ring->count; | |
874 | for (index = 0; index < ring_count; index++) { | |
875 | buffer_info = &tpd_ring->buffer_info[index]; | |
c6060be4 | 876 | atl1c_clean_buffer(pdev, buffer_info, 0); |
43250ddd JY |
877 | } |
878 | ||
879 | /* Zero out Tx-buffers */ | |
880 | memset(tpd_ring->desc, 0, sizeof(struct atl1c_tpd_desc) * | |
c6060be4 | 881 | ring_count); |
43250ddd JY |
882 | atomic_set(&tpd_ring->next_to_clean, 0); |
883 | tpd_ring->next_to_use = 0; | |
884 | } | |
885 | ||
49ce9c2c | 886 | /** |
43250ddd JY |
887 | * atl1c_clean_rx_ring - Free rx-reservation skbs |
888 | * @adapter: board private structure | |
889 | */ | |
890 | static void atl1c_clean_rx_ring(struct atl1c_adapter *adapter) | |
891 | { | |
9f1fd0ef HX |
892 | struct atl1c_rfd_ring *rfd_ring = &adapter->rfd_ring; |
893 | struct atl1c_rrd_ring *rrd_ring = &adapter->rrd_ring; | |
43250ddd JY |
894 | struct atl1c_buffer *buffer_info; |
895 | struct pci_dev *pdev = adapter->pdev; | |
9f1fd0ef | 896 | int j; |
43250ddd | 897 | |
9f1fd0ef HX |
898 | for (j = 0; j < rfd_ring->count; j++) { |
899 | buffer_info = &rfd_ring->buffer_info[j]; | |
900 | atl1c_clean_buffer(pdev, buffer_info, 0); | |
43250ddd | 901 | } |
9f1fd0ef HX |
902 | /* zero out the descriptor ring */ |
903 | memset(rfd_ring->desc, 0, rfd_ring->size); | |
904 | rfd_ring->next_to_clean = 0; | |
905 | rfd_ring->next_to_use = 0; | |
906 | rrd_ring->next_to_use = 0; | |
907 | rrd_ring->next_to_clean = 0; | |
43250ddd JY |
908 | } |
909 | ||
910 | /* | |
911 | * Read / Write Ptr Initialize: | |
912 | */ | |
913 | static void atl1c_init_ring_ptrs(struct atl1c_adapter *adapter) | |
914 | { | |
915 | struct atl1c_tpd_ring *tpd_ring = adapter->tpd_ring; | |
9f1fd0ef HX |
916 | struct atl1c_rfd_ring *rfd_ring = &adapter->rfd_ring; |
917 | struct atl1c_rrd_ring *rrd_ring = &adapter->rrd_ring; | |
43250ddd JY |
918 | struct atl1c_buffer *buffer_info; |
919 | int i, j; | |
920 | ||
921 | for (i = 0; i < AT_MAX_TRANSMIT_QUEUE; i++) { | |
922 | tpd_ring[i].next_to_use = 0; | |
923 | atomic_set(&tpd_ring[i].next_to_clean, 0); | |
924 | buffer_info = tpd_ring[i].buffer_info; | |
925 | for (j = 0; j < tpd_ring->count; j++) | |
c6060be4 JY |
926 | ATL1C_SET_BUFFER_STATE(&buffer_info[i], |
927 | ATL1C_BUFFER_FREE); | |
43250ddd | 928 | } |
9f1fd0ef HX |
929 | rfd_ring->next_to_use = 0; |
930 | rfd_ring->next_to_clean = 0; | |
931 | rrd_ring->next_to_use = 0; | |
932 | rrd_ring->next_to_clean = 0; | |
933 | for (j = 0; j < rfd_ring->count; j++) { | |
934 | buffer_info = &rfd_ring->buffer_info[j]; | |
935 | ATL1C_SET_BUFFER_STATE(buffer_info, ATL1C_BUFFER_FREE); | |
43250ddd JY |
936 | } |
937 | } | |
938 | ||
49ce9c2c | 939 | /** |
43250ddd JY |
940 | * atl1c_free_ring_resources - Free Tx / RX descriptor Resources |
941 | * @adapter: board private structure | |
942 | * | |
943 | * Free all transmit software resources | |
944 | */ | |
945 | static void atl1c_free_ring_resources(struct atl1c_adapter *adapter) | |
946 | { | |
947 | struct pci_dev *pdev = adapter->pdev; | |
948 | ||
949 | pci_free_consistent(pdev, adapter->ring_header.size, | |
950 | adapter->ring_header.desc, | |
951 | adapter->ring_header.dma); | |
952 | adapter->ring_header.desc = NULL; | |
953 | ||
954 | /* Note: just free tdp_ring.buffer_info, | |
955 | * it contain rfd_ring.buffer_info, do not double free */ | |
956 | if (adapter->tpd_ring[0].buffer_info) { | |
957 | kfree(adapter->tpd_ring[0].buffer_info); | |
958 | adapter->tpd_ring[0].buffer_info = NULL; | |
959 | } | |
7b701764 ED |
960 | if (adapter->rx_page) { |
961 | put_page(adapter->rx_page); | |
962 | adapter->rx_page = NULL; | |
963 | } | |
43250ddd JY |
964 | } |
965 | ||
49ce9c2c | 966 | /** |
43250ddd JY |
967 | * atl1c_setup_mem_resources - allocate Tx / RX descriptor resources |
968 | * @adapter: board private structure | |
969 | * | |
970 | * Return 0 on success, negative on failure | |
971 | */ | |
972 | static int atl1c_setup_ring_resources(struct atl1c_adapter *adapter) | |
973 | { | |
974 | struct pci_dev *pdev = adapter->pdev; | |
975 | struct atl1c_tpd_ring *tpd_ring = adapter->tpd_ring; | |
9f1fd0ef HX |
976 | struct atl1c_rfd_ring *rfd_ring = &adapter->rfd_ring; |
977 | struct atl1c_rrd_ring *rrd_ring = &adapter->rrd_ring; | |
43250ddd | 978 | struct atl1c_ring_header *ring_header = &adapter->ring_header; |
43250ddd JY |
979 | int size; |
980 | int i; | |
981 | int count = 0; | |
982 | int rx_desc_count = 0; | |
983 | u32 offset = 0; | |
984 | ||
9f1fd0ef | 985 | rrd_ring->count = rfd_ring->count; |
43250ddd JY |
986 | for (i = 1; i < AT_MAX_TRANSMIT_QUEUE; i++) |
987 | tpd_ring[i].count = tpd_ring[0].count; | |
988 | ||
43250ddd JY |
989 | /* 2 tpd queue, one high priority queue, |
990 | * another normal priority queue */ | |
991 | size = sizeof(struct atl1c_buffer) * (tpd_ring->count * 2 + | |
9f1fd0ef | 992 | rfd_ring->count); |
43250ddd | 993 | tpd_ring->buffer_info = kzalloc(size, GFP_KERNEL); |
b2adaca9 | 994 | if (unlikely(!tpd_ring->buffer_info)) |
43250ddd | 995 | goto err_nomem; |
b2adaca9 | 996 | |
43250ddd JY |
997 | for (i = 0; i < AT_MAX_TRANSMIT_QUEUE; i++) { |
998 | tpd_ring[i].buffer_info = | |
64699336 | 999 | (tpd_ring->buffer_info + count); |
43250ddd JY |
1000 | count += tpd_ring[i].count; |
1001 | } | |
1002 | ||
9f1fd0ef | 1003 | rfd_ring->buffer_info = |
64699336 | 1004 | (tpd_ring->buffer_info + count); |
9f1fd0ef HX |
1005 | count += rfd_ring->count; |
1006 | rx_desc_count += rfd_ring->count; | |
1007 | ||
43250ddd JY |
1008 | /* |
1009 | * real ring DMA buffer | |
1010 | * each ring/block may need up to 8 bytes for alignment, hence the | |
1011 | * additional bytes tacked onto the end. | |
1012 | */ | |
1013 | ring_header->size = size = | |
1014 | sizeof(struct atl1c_tpd_desc) * tpd_ring->count * 2 + | |
1015 | sizeof(struct atl1c_rx_free_desc) * rx_desc_count + | |
1016 | sizeof(struct atl1c_recv_ret_status) * rx_desc_count + | |
8d5c6836 | 1017 | 8 * 4; |
43250ddd JY |
1018 | |
1019 | ring_header->desc = pci_alloc_consistent(pdev, ring_header->size, | |
1020 | &ring_header->dma); | |
1021 | if (unlikely(!ring_header->desc)) { | |
1022 | dev_err(&pdev->dev, "pci_alloc_consistend failed\n"); | |
1023 | goto err_nomem; | |
1024 | } | |
1025 | memset(ring_header->desc, 0, ring_header->size); | |
1026 | /* init TPD ring */ | |
1027 | ||
1028 | tpd_ring[0].dma = roundup(ring_header->dma, 8); | |
1029 | offset = tpd_ring[0].dma - ring_header->dma; | |
1030 | for (i = 0; i < AT_MAX_TRANSMIT_QUEUE; i++) { | |
1031 | tpd_ring[i].dma = ring_header->dma + offset; | |
1032 | tpd_ring[i].desc = (u8 *) ring_header->desc + offset; | |
1033 | tpd_ring[i].size = | |
1034 | sizeof(struct atl1c_tpd_desc) * tpd_ring[i].count; | |
1035 | offset += roundup(tpd_ring[i].size, 8); | |
1036 | } | |
1037 | /* init RFD ring */ | |
9f1fd0ef HX |
1038 | rfd_ring->dma = ring_header->dma + offset; |
1039 | rfd_ring->desc = (u8 *) ring_header->desc + offset; | |
1040 | rfd_ring->size = sizeof(struct atl1c_rx_free_desc) * rfd_ring->count; | |
1041 | offset += roundup(rfd_ring->size, 8); | |
43250ddd JY |
1042 | |
1043 | /* init RRD ring */ | |
9f1fd0ef HX |
1044 | rrd_ring->dma = ring_header->dma + offset; |
1045 | rrd_ring->desc = (u8 *) ring_header->desc + offset; | |
1046 | rrd_ring->size = sizeof(struct atl1c_recv_ret_status) * | |
1047 | rrd_ring->count; | |
1048 | offset += roundup(rrd_ring->size, 8); | |
43250ddd | 1049 | |
43250ddd JY |
1050 | return 0; |
1051 | ||
1052 | err_nomem: | |
1053 | kfree(tpd_ring->buffer_info); | |
1054 | return -ENOMEM; | |
1055 | } | |
1056 | ||
1057 | static void atl1c_configure_des_ring(struct atl1c_adapter *adapter) | |
1058 | { | |
1059 | struct atl1c_hw *hw = &adapter->hw; | |
9f1fd0ef HX |
1060 | struct atl1c_rfd_ring *rfd_ring = &adapter->rfd_ring; |
1061 | struct atl1c_rrd_ring *rrd_ring = &adapter->rrd_ring; | |
43250ddd JY |
1062 | struct atl1c_tpd_ring *tpd_ring = (struct atl1c_tpd_ring *) |
1063 | adapter->tpd_ring; | |
43250ddd JY |
1064 | |
1065 | /* TPD */ | |
1066 | AT_WRITE_REG(hw, REG_TX_BASE_ADDR_HI, | |
1067 | (u32)((tpd_ring[atl1c_trans_normal].dma & | |
1068 | AT_DMA_HI_ADDR_MASK) >> 32)); | |
1069 | /* just enable normal priority TX queue */ | |
0af48336 | 1070 | AT_WRITE_REG(hw, REG_TPD_PRI0_ADDR_LO, |
43250ddd JY |
1071 | (u32)(tpd_ring[atl1c_trans_normal].dma & |
1072 | AT_DMA_LO_ADDR_MASK)); | |
0af48336 | 1073 | AT_WRITE_REG(hw, REG_TPD_PRI1_ADDR_LO, |
43250ddd JY |
1074 | (u32)(tpd_ring[atl1c_trans_high].dma & |
1075 | AT_DMA_LO_ADDR_MASK)); | |
1076 | AT_WRITE_REG(hw, REG_TPD_RING_SIZE, | |
1077 | (u32)(tpd_ring[0].count & TPD_RING_SIZE_MASK)); | |
1078 | ||
1079 | ||
1080 | /* RFD */ | |
1081 | AT_WRITE_REG(hw, REG_RX_BASE_ADDR_HI, | |
9f1fd0ef HX |
1082 | (u32)((rfd_ring->dma & AT_DMA_HI_ADDR_MASK) >> 32)); |
1083 | AT_WRITE_REG(hw, REG_RFD0_HEAD_ADDR_LO, | |
1084 | (u32)(rfd_ring->dma & AT_DMA_LO_ADDR_MASK)); | |
43250ddd JY |
1085 | |
1086 | AT_WRITE_REG(hw, REG_RFD_RING_SIZE, | |
9f1fd0ef | 1087 | rfd_ring->count & RFD_RING_SIZE_MASK); |
43250ddd JY |
1088 | AT_WRITE_REG(hw, REG_RX_BUF_SIZE, |
1089 | adapter->rx_buffer_len & RX_BUF_SIZE_MASK); | |
1090 | ||
1091 | /* RRD */ | |
9f1fd0ef HX |
1092 | AT_WRITE_REG(hw, REG_RRD0_HEAD_ADDR_LO, |
1093 | (u32)(rrd_ring->dma & AT_DMA_LO_ADDR_MASK)); | |
43250ddd | 1094 | AT_WRITE_REG(hw, REG_RRD_RING_SIZE, |
9f1fd0ef | 1095 | (rrd_ring->count & RRD_RING_SIZE_MASK)); |
43250ddd | 1096 | |
8f574b35 JY |
1097 | if (hw->nic_type == athr_l2c_b) { |
1098 | AT_WRITE_REG(hw, REG_SRAM_RXF_LEN, 0x02a0L); | |
1099 | AT_WRITE_REG(hw, REG_SRAM_TXF_LEN, 0x0100L); | |
1100 | AT_WRITE_REG(hw, REG_SRAM_RXF_ADDR, 0x029f0000L); | |
1101 | AT_WRITE_REG(hw, REG_SRAM_RFD0_INFO, 0x02bf02a0L); | |
1102 | AT_WRITE_REG(hw, REG_SRAM_TXF_ADDR, 0x03bf02c0L); | |
1103 | AT_WRITE_REG(hw, REG_SRAM_TRD_ADDR, 0x03df03c0L); | |
1104 | AT_WRITE_REG(hw, REG_TXF_WATER_MARK, 0); /* TX watermark, to enter l1 state.*/ | |
1105 | AT_WRITE_REG(hw, REG_RXD_DMA_CTRL, 0); /* RXD threshold.*/ | |
1106 | } | |
43250ddd JY |
1107 | /* Load all of base address above */ |
1108 | AT_WRITE_REG(hw, REG_LOAD_PTR, 1); | |
1109 | } | |
1110 | ||
1111 | static void atl1c_configure_tx(struct atl1c_adapter *adapter) | |
1112 | { | |
1113 | struct atl1c_hw *hw = &adapter->hw; | |
59e26eff | 1114 | int max_pay_load; |
43250ddd JY |
1115 | u16 tx_offload_thresh; |
1116 | u32 txq_ctrl_data; | |
43250ddd | 1117 | |
c08b9b2a | 1118 | tx_offload_thresh = MAX_TSO_FRAME_SIZE; |
43250ddd JY |
1119 | AT_WRITE_REG(hw, REG_TX_TSO_OFFLOAD_THRESH, |
1120 | (tx_offload_thresh >> 3) & TX_TSO_OFFLOAD_THRESH_MASK); | |
59e26eff | 1121 | max_pay_load = pcie_get_readrq(adapter->pdev) >> 8; |
81b504b8 | 1122 | hw->dmar_block = min_t(u32, max_pay_load, hw->dmar_block); |
59e26eff HX |
1123 | /* |
1124 | * if BIOS had changed the dam-read-max-length to an invalid value, | |
1125 | * restore it to default value | |
1126 | */ | |
1127 | if (hw->dmar_block < DEVICE_CTRL_MAXRRS_MIN) { | |
1128 | pcie_set_readrq(adapter->pdev, 128 << DEVICE_CTRL_MAXRRS_MIN); | |
1129 | hw->dmar_block = DEVICE_CTRL_MAXRRS_MIN; | |
1130 | } | |
c24588af HX |
1131 | txq_ctrl_data = |
1132 | hw->nic_type == athr_l2c_b || hw->nic_type == athr_l2c_b2 ? | |
1133 | L2CB_TXQ_CFGV : L1C_TXQ_CFGV; | |
43250ddd JY |
1134 | |
1135 | AT_WRITE_REG(hw, REG_TXQ_CTRL, txq_ctrl_data); | |
1136 | } | |
1137 | ||
1138 | static void atl1c_configure_rx(struct atl1c_adapter *adapter) | |
1139 | { | |
1140 | struct atl1c_hw *hw = &adapter->hw; | |
1141 | u32 rxq_ctrl_data; | |
1142 | ||
1143 | rxq_ctrl_data = (hw->rfd_burst & RXQ_RFD_BURST_NUM_MASK) << | |
1144 | RXQ_RFD_BURST_NUM_SHIFT; | |
1145 | ||
1146 | if (hw->ctrl_flags & ATL1C_RX_IPV6_CHKSUM) | |
1147 | rxq_ctrl_data |= IPV6_CHKSUM_CTRL_EN; | |
9f1fd0ef | 1148 | |
9c528218 HX |
1149 | /* aspm for gigabit */ |
1150 | if (hw->nic_type != athr_l1d_2 && (hw->device_id & 1) != 0) | |
1151 | rxq_ctrl_data = FIELD_SETX(rxq_ctrl_data, ASPM_THRUPUT_LIMIT, | |
1152 | ASPM_THRUPUT_LIMIT_100M); | |
43250ddd JY |
1153 | |
1154 | AT_WRITE_REG(hw, REG_RXQ_CTRL, rxq_ctrl_data); | |
1155 | } | |
1156 | ||
43250ddd JY |
1157 | static void atl1c_configure_dma(struct atl1c_adapter *adapter) |
1158 | { | |
1159 | struct atl1c_hw *hw = &adapter->hw; | |
1160 | u32 dma_ctrl_data; | |
1161 | ||
37bfccb5 HX |
1162 | dma_ctrl_data = FIELDX(DMA_CTRL_RORDER_MODE, DMA_CTRL_RORDER_MODE_OUT) | |
1163 | DMA_CTRL_RREQ_PRI_DATA | | |
1164 | FIELDX(DMA_CTRL_RREQ_BLEN, hw->dmar_block) | | |
1165 | FIELDX(DMA_CTRL_WDLY_CNT, DMA_CTRL_WDLY_CNT_DEF) | | |
1166 | FIELDX(DMA_CTRL_RDLY_CNT, DMA_CTRL_RDLY_CNT_DEF); | |
43250ddd JY |
1167 | |
1168 | AT_WRITE_REG(hw, REG_DMA_CTRL, dma_ctrl_data); | |
1169 | } | |
1170 | ||
1171 | /* | |
1172 | * Stop the mac, transmit and receive units | |
1173 | * hw - Struct containing variables accessed by shared code | |
1174 | * return : 0 or idle status (if error) | |
1175 | */ | |
1176 | static int atl1c_stop_mac(struct atl1c_hw *hw) | |
1177 | { | |
1178 | u32 data; | |
43250ddd JY |
1179 | |
1180 | AT_READ_REG(hw, REG_RXQ_CTRL, &data); | |
027392c2 | 1181 | data &= ~RXQ_CTRL_EN; |
43250ddd JY |
1182 | AT_WRITE_REG(hw, REG_RXQ_CTRL, data); |
1183 | ||
1184 | AT_READ_REG(hw, REG_TXQ_CTRL, &data); | |
1185 | data &= ~TXQ_CTRL_EN; | |
0cbec61c | 1186 | AT_WRITE_REG(hw, REG_TXQ_CTRL, data); |
43250ddd | 1187 | |
969a7ee2 | 1188 | atl1c_wait_until_idle(hw, IDLE_STATUS_RXQ_BUSY | IDLE_STATUS_TXQ_BUSY); |
43250ddd JY |
1189 | |
1190 | AT_READ_REG(hw, REG_MAC_CTRL, &data); | |
1191 | data &= ~(MAC_CTRL_TX_EN | MAC_CTRL_RX_EN); | |
1192 | AT_WRITE_REG(hw, REG_MAC_CTRL, data); | |
1193 | ||
969a7ee2 HX |
1194 | return (int)atl1c_wait_until_idle(hw, |
1195 | IDLE_STATUS_TXMAC_BUSY | IDLE_STATUS_RXMAC_BUSY); | |
43250ddd JY |
1196 | } |
1197 | ||
25456e5c | 1198 | static void atl1c_start_mac(struct atl1c_adapter *adapter) |
43250ddd | 1199 | { |
25456e5c HX |
1200 | struct atl1c_hw *hw = &adapter->hw; |
1201 | u32 mac, txq, rxq; | |
1202 | ||
1203 | hw->mac_duplex = adapter->link_duplex == FULL_DUPLEX ? true : false; | |
1204 | hw->mac_speed = adapter->link_speed == SPEED_1000 ? | |
1205 | atl1c_mac_speed_1000 : atl1c_mac_speed_10_100; | |
1206 | ||
1207 | AT_READ_REG(hw, REG_TXQ_CTRL, &txq); | |
1208 | AT_READ_REG(hw, REG_RXQ_CTRL, &rxq); | |
1209 | AT_READ_REG(hw, REG_MAC_CTRL, &mac); | |
1210 | ||
1211 | txq |= TXQ_CTRL_EN; | |
1212 | rxq |= RXQ_CTRL_EN; | |
1213 | mac |= MAC_CTRL_TX_EN | MAC_CTRL_TX_FLOW | | |
1214 | MAC_CTRL_RX_EN | MAC_CTRL_RX_FLOW | | |
1215 | MAC_CTRL_ADD_CRC | MAC_CTRL_PAD | | |
1216 | MAC_CTRL_BC_EN | MAC_CTRL_SINGLE_PAUSE_EN | | |
1217 | MAC_CTRL_HASH_ALG_CRC32; | |
1218 | if (hw->mac_duplex) | |
1219 | mac |= MAC_CTRL_DUPLX; | |
1220 | else | |
1221 | mac &= ~MAC_CTRL_DUPLX; | |
1222 | mac = FIELD_SETX(mac, MAC_CTRL_SPEED, hw->mac_speed); | |
1223 | mac = FIELD_SETX(mac, MAC_CTRL_PRMLEN, hw->preamble_len); | |
43250ddd | 1224 | |
25456e5c HX |
1225 | AT_WRITE_REG(hw, REG_TXQ_CTRL, txq); |
1226 | AT_WRITE_REG(hw, REG_RXQ_CTRL, rxq); | |
1227 | AT_WRITE_REG(hw, REG_MAC_CTRL, mac); | |
43250ddd JY |
1228 | } |
1229 | ||
1230 | /* | |
1231 | * Reset the transmit and receive units; mask and clear all interrupts. | |
1232 | * hw - Struct containing variables accessed by shared code | |
1233 | * return : 0 or idle status (if error) | |
1234 | */ | |
1235 | static int atl1c_reset_mac(struct atl1c_hw *hw) | |
1236 | { | |
64699336 | 1237 | struct atl1c_adapter *adapter = hw->adapter; |
43250ddd | 1238 | struct pci_dev *pdev = adapter->pdev; |
7737fd96 | 1239 | u32 ctrl_data = 0; |
43250ddd | 1240 | |
8f574b35 | 1241 | atl1c_stop_mac(hw); |
43250ddd JY |
1242 | /* |
1243 | * Issue Soft Reset to the MAC. This will reset the chip's | |
1244 | * transmit, receive, DMA. It will not effect | |
1245 | * the current PCI configuration. The global reset bit is self- | |
1246 | * clearing, and should clear within a microsecond. | |
1247 | */ | |
7737fd96 HX |
1248 | AT_READ_REG(hw, REG_MASTER_CTRL, &ctrl_data); |
1249 | ctrl_data |= MASTER_CTRL_OOB_DIS; | |
1250 | AT_WRITE_REG(hw, REG_MASTER_CTRL, ctrl_data | MASTER_CTRL_SOFT_RST); | |
8f574b35 | 1251 | |
43250ddd JY |
1252 | AT_WRITE_FLUSH(hw); |
1253 | msleep(10); | |
1254 | /* Wait at least 10ms for All module to be Idle */ | |
c930a662 | 1255 | |
969a7ee2 | 1256 | if (atl1c_wait_until_idle(hw, IDLE_STATUS_MASK)) { |
43250ddd | 1257 | dev_err(&pdev->dev, |
c930a662 | 1258 | "MAC state machine can't be idle since" |
43250ddd JY |
1259 | " disabled for 10ms second\n"); |
1260 | return -1; | |
1261 | } | |
7737fd96 HX |
1262 | AT_WRITE_REG(hw, REG_MASTER_CTRL, ctrl_data); |
1263 | ||
1264 | /* driver control speed/duplex */ | |
1265 | AT_READ_REG(hw, REG_MAC_CTRL, &ctrl_data); | |
1266 | AT_WRITE_REG(hw, REG_MAC_CTRL, ctrl_data | MAC_CTRL_SPEED_MODE_SW); | |
1267 | ||
1268 | /* clk switch setting */ | |
1269 | AT_READ_REG(hw, REG_SERDES, &ctrl_data); | |
1270 | switch (hw->nic_type) { | |
1271 | case athr_l2c_b: | |
1272 | ctrl_data &= ~(SERDES_PHY_CLK_SLOWDOWN | | |
1273 | SERDES_MAC_CLK_SLOWDOWN); | |
1274 | AT_WRITE_REG(hw, REG_SERDES, ctrl_data); | |
1275 | break; | |
1276 | case athr_l2c_b2: | |
1277 | case athr_l1d_2: | |
1278 | ctrl_data |= SERDES_PHY_CLK_SLOWDOWN | SERDES_MAC_CLK_SLOWDOWN; | |
1279 | AT_WRITE_REG(hw, REG_SERDES, ctrl_data); | |
1280 | break; | |
1281 | default: | |
1282 | break; | |
1283 | } | |
ebe22ed9 | 1284 | |
43250ddd JY |
1285 | return 0; |
1286 | } | |
1287 | ||
1288 | static void atl1c_disable_l0s_l1(struct atl1c_hw *hw) | |
1289 | { | |
024e1e4d | 1290 | u16 ctrl_flags = hw->ctrl_flags; |
43250ddd | 1291 | |
024e1e4d HX |
1292 | hw->ctrl_flags &= ~(ATL1C_ASPM_L0S_SUPPORT | ATL1C_ASPM_L1_SUPPORT); |
1293 | atl1c_set_aspm(hw, SPEED_0); | |
1294 | hw->ctrl_flags = ctrl_flags; | |
43250ddd JY |
1295 | } |
1296 | ||
1297 | /* | |
1298 | * Set ASPM state. | |
1299 | * Enable/disable L0s/L1 depend on link state. | |
1300 | */ | |
024e1e4d | 1301 | static void atl1c_set_aspm(struct atl1c_hw *hw, u16 link_speed) |
43250ddd JY |
1302 | { |
1303 | u32 pm_ctrl_data; | |
024e1e4d | 1304 | u32 link_l1_timer; |
43250ddd JY |
1305 | |
1306 | AT_READ_REG(hw, REG_PM_CTRL, &pm_ctrl_data); | |
024e1e4d HX |
1307 | pm_ctrl_data &= ~(PM_CTRL_ASPM_L1_EN | |
1308 | PM_CTRL_ASPM_L0S_EN | | |
1309 | PM_CTRL_MAC_ASPM_CHK); | |
1310 | /* L1 timer */ | |
1311 | if (hw->nic_type == athr_l2c_b2 || hw->nic_type == athr_l1d_2) { | |
1312 | pm_ctrl_data &= ~PMCTRL_TXL1_AFTER_L0S; | |
1313 | link_l1_timer = | |
1314 | link_speed == SPEED_1000 || link_speed == SPEED_100 ? | |
1315 | L1D_PMCTRL_L1_ENTRY_TM_16US : 1; | |
1316 | pm_ctrl_data = FIELD_SETX(pm_ctrl_data, | |
1317 | L1D_PMCTRL_L1_ENTRY_TM, link_l1_timer); | |
1318 | } else { | |
1319 | link_l1_timer = hw->nic_type == athr_l2c_b ? | |
1320 | L2CB1_PM_CTRL_L1_ENTRY_TM : L1C_PM_CTRL_L1_ENTRY_TM; | |
1321 | if (link_speed != SPEED_1000 && link_speed != SPEED_100) | |
1322 | link_l1_timer = 1; | |
1323 | pm_ctrl_data = FIELD_SETX(pm_ctrl_data, | |
1324 | PM_CTRL_L1_ENTRY_TIMER, link_l1_timer); | |
1325 | } | |
496c185c | 1326 | |
024e1e4d | 1327 | /* L0S/L1 enable */ |
4fc36352 | 1328 | if ((hw->ctrl_flags & ATL1C_ASPM_L0S_SUPPORT) && link_speed != SPEED_0) |
024e1e4d HX |
1329 | pm_ctrl_data |= PM_CTRL_ASPM_L0S_EN | PM_CTRL_MAC_ASPM_CHK; |
1330 | if (hw->ctrl_flags & ATL1C_ASPM_L1_SUPPORT) | |
1331 | pm_ctrl_data |= PM_CTRL_ASPM_L1_EN | PM_CTRL_MAC_ASPM_CHK; | |
496c185c | 1332 | |
024e1e4d | 1333 | /* l2cb & l1d & l2cb2 & l1d2 */ |
8f574b35 | 1334 | if (hw->nic_type == athr_l2c_b || hw->nic_type == athr_l1d || |
024e1e4d HX |
1335 | hw->nic_type == athr_l2c_b2 || hw->nic_type == athr_l1d_2) { |
1336 | pm_ctrl_data = FIELD_SETX(pm_ctrl_data, | |
1337 | PM_CTRL_PM_REQ_TIMER, PM_CTRL_PM_REQ_TO_DEF); | |
1338 | pm_ctrl_data |= PM_CTRL_RCVR_WT_TIMER | | |
1339 | PM_CTRL_SERDES_PD_EX_L1 | | |
1340 | PM_CTRL_CLK_SWH_L1; | |
1341 | pm_ctrl_data &= ~(PM_CTRL_SERDES_L1_EN | | |
1342 | PM_CTRL_SERDES_PLL_L1_EN | | |
1343 | PM_CTRL_SERDES_BUFS_RX_L1_EN | | |
1344 | PM_CTRL_SA_DLY_EN | | |
1345 | PM_CTRL_HOTRST); | |
1346 | /* disable l0s if link down or l2cb */ | |
1347 | if (link_speed == SPEED_0 || hw->nic_type == athr_l2c_b) | |
496c185c | 1348 | pm_ctrl_data &= ~PM_CTRL_ASPM_L0S_EN; |
024e1e4d HX |
1349 | } else { /* l1c */ |
1350 | pm_ctrl_data = | |
1351 | FIELD_SETX(pm_ctrl_data, PM_CTRL_L1_ENTRY_TIMER, 0); | |
1352 | if (link_speed != SPEED_0) { | |
1353 | pm_ctrl_data |= PM_CTRL_SERDES_L1_EN | | |
1354 | PM_CTRL_SERDES_PLL_L1_EN | | |
1355 | PM_CTRL_SERDES_BUFS_RX_L1_EN; | |
1356 | pm_ctrl_data &= ~(PM_CTRL_SERDES_PD_EX_L1 | | |
1357 | PM_CTRL_CLK_SWH_L1 | | |
1358 | PM_CTRL_ASPM_L0S_EN | | |
1359 | PM_CTRL_ASPM_L1_EN); | |
1360 | } else { /* link down */ | |
1361 | pm_ctrl_data |= PM_CTRL_CLK_SWH_L1; | |
1362 | pm_ctrl_data &= ~(PM_CTRL_SERDES_L1_EN | | |
1363 | PM_CTRL_SERDES_PLL_L1_EN | | |
1364 | PM_CTRL_SERDES_BUFS_RX_L1_EN | | |
1365 | PM_CTRL_ASPM_L0S_EN); | |
8f574b35 | 1366 | } |
43250ddd | 1367 | } |
43250ddd | 1368 | AT_WRITE_REG(hw, REG_PM_CTRL, pm_ctrl_data); |
8f574b35 JY |
1369 | |
1370 | return; | |
43250ddd JY |
1371 | } |
1372 | ||
49ce9c2c | 1373 | /** |
43250ddd JY |
1374 | * atl1c_configure - Configure Transmit&Receive Unit after Reset |
1375 | * @adapter: board private structure | |
1376 | * | |
1377 | * Configure the Tx /Rx unit of the MAC after a reset. | |
1378 | */ | |
5e5c0964 | 1379 | static int atl1c_configure_mac(struct atl1c_adapter *adapter) |
43250ddd JY |
1380 | { |
1381 | struct atl1c_hw *hw = &adapter->hw; | |
1382 | u32 master_ctrl_data = 0; | |
1383 | u32 intr_modrt_data; | |
8f574b35 | 1384 | u32 data; |
43250ddd | 1385 | |
ebe22ed9 HX |
1386 | AT_READ_REG(hw, REG_MASTER_CTRL, &master_ctrl_data); |
1387 | master_ctrl_data &= ~(MASTER_CTRL_TX_ITIMER_EN | | |
1388 | MASTER_CTRL_RX_ITIMER_EN | | |
1389 | MASTER_CTRL_INT_RDCLR); | |
43250ddd JY |
1390 | /* clear interrupt status */ |
1391 | AT_WRITE_REG(hw, REG_ISR, 0xFFFFFFFF); | |
1392 | /* Clear any WOL status */ | |
1393 | AT_WRITE_REG(hw, REG_WOL_CTRL, 0); | |
1394 | /* set Interrupt Clear Timer | |
1395 | * HW will enable self to assert interrupt event to system after | |
1396 | * waiting x-time for software to notify it accept interrupt. | |
1397 | */ | |
8f574b35 JY |
1398 | |
1399 | data = CLK_GATING_EN_ALL; | |
1400 | if (hw->ctrl_flags & ATL1C_CLK_GATING_EN) { | |
1401 | if (hw->nic_type == athr_l2c_b) | |
1402 | data &= ~CLK_GATING_RXMAC_EN; | |
1403 | } else | |
1404 | data = 0; | |
1405 | AT_WRITE_REG(hw, REG_CLK_GATING_CTRL, data); | |
1406 | ||
43250ddd JY |
1407 | AT_WRITE_REG(hw, REG_INT_RETRIG_TIMER, |
1408 | hw->ict & INT_RETRIG_TIMER_MASK); | |
1409 | ||
1410 | atl1c_configure_des_ring(adapter); | |
1411 | ||
1412 | if (hw->ctrl_flags & ATL1C_INTR_MODRT_ENABLE) { | |
1413 | intr_modrt_data = (hw->tx_imt & IRQ_MODRT_TIMER_MASK) << | |
1414 | IRQ_MODRT_TX_TIMER_SHIFT; | |
1415 | intr_modrt_data |= (hw->rx_imt & IRQ_MODRT_TIMER_MASK) << | |
1416 | IRQ_MODRT_RX_TIMER_SHIFT; | |
1417 | AT_WRITE_REG(hw, REG_IRQ_MODRT_TIMER_INIT, intr_modrt_data); | |
1418 | master_ctrl_data |= | |
1419 | MASTER_CTRL_TX_ITIMER_EN | MASTER_CTRL_RX_ITIMER_EN; | |
1420 | } | |
1421 | ||
1422 | if (hw->ctrl_flags & ATL1C_INTR_CLEAR_ON_READ) | |
1423 | master_ctrl_data |= MASTER_CTRL_INT_RDCLR; | |
1424 | ||
8f574b35 | 1425 | master_ctrl_data |= MASTER_CTRL_SA_TIMER_EN; |
43250ddd JY |
1426 | AT_WRITE_REG(hw, REG_MASTER_CTRL, master_ctrl_data); |
1427 | ||
8d5c6836 HX |
1428 | AT_WRITE_REG(hw, REG_SMB_STAT_TIMER, |
1429 | hw->smb_timer & SMB_STAT_TIMER_MASK); | |
43250ddd | 1430 | |
43250ddd JY |
1431 | /* set MTU */ |
1432 | AT_WRITE_REG(hw, REG_MTU, hw->max_frame_size + ETH_HLEN + | |
1433 | VLAN_HLEN + ETH_FCS_LEN); | |
43250ddd JY |
1434 | |
1435 | atl1c_configure_tx(adapter); | |
1436 | atl1c_configure_rx(adapter); | |
43250ddd JY |
1437 | atl1c_configure_dma(adapter); |
1438 | ||
1439 | return 0; | |
1440 | } | |
1441 | ||
5e5c0964 HX |
1442 | static int atl1c_configure(struct atl1c_adapter *adapter) |
1443 | { | |
1444 | struct net_device *netdev = adapter->netdev; | |
1445 | int num; | |
1446 | ||
1447 | atl1c_init_ring_ptrs(adapter); | |
1448 | atl1c_set_multi(netdev); | |
1449 | atl1c_restore_vlan(adapter); | |
1450 | ||
1451 | num = atl1c_alloc_rx_buffer(adapter); | |
1452 | if (unlikely(num == 0)) | |
1453 | return -ENOMEM; | |
1454 | ||
1455 | if (atl1c_configure_mac(adapter)) | |
1456 | return -EIO; | |
1457 | ||
1458 | return 0; | |
1459 | } | |
1460 | ||
43250ddd JY |
1461 | static void atl1c_update_hw_stats(struct atl1c_adapter *adapter) |
1462 | { | |
1463 | u16 hw_reg_addr = 0; | |
1464 | unsigned long *stats_item = NULL; | |
1465 | u32 data; | |
1466 | ||
1467 | /* update rx status */ | |
1468 | hw_reg_addr = REG_MAC_RX_STATUS_BIN; | |
1469 | stats_item = &adapter->hw_stats.rx_ok; | |
1470 | while (hw_reg_addr <= REG_MAC_RX_STATUS_END) { | |
1471 | AT_READ_REG(&adapter->hw, hw_reg_addr, &data); | |
1472 | *stats_item += data; | |
1473 | stats_item++; | |
1474 | hw_reg_addr += 4; | |
1475 | } | |
1476 | /* update tx status */ | |
1477 | hw_reg_addr = REG_MAC_TX_STATUS_BIN; | |
1478 | stats_item = &adapter->hw_stats.tx_ok; | |
1479 | while (hw_reg_addr <= REG_MAC_TX_STATUS_END) { | |
1480 | AT_READ_REG(&adapter->hw, hw_reg_addr, &data); | |
1481 | *stats_item += data; | |
1482 | stats_item++; | |
1483 | hw_reg_addr += 4; | |
1484 | } | |
1485 | } | |
1486 | ||
49ce9c2c | 1487 | /** |
43250ddd JY |
1488 | * atl1c_get_stats - Get System Network Statistics |
1489 | * @netdev: network interface device structure | |
1490 | * | |
1491 | * Returns the address of the device statistics structure. | |
1492 | * The statistics are actually updated from the timer callback. | |
1493 | */ | |
1494 | static struct net_device_stats *atl1c_get_stats(struct net_device *netdev) | |
1495 | { | |
1496 | struct atl1c_adapter *adapter = netdev_priv(netdev); | |
1497 | struct atl1c_hw_stats *hw_stats = &adapter->hw_stats; | |
a2c483a1 | 1498 | struct net_device_stats *net_stats = &netdev->stats; |
43250ddd JY |
1499 | |
1500 | atl1c_update_hw_stats(adapter); | |
1501 | net_stats->rx_packets = hw_stats->rx_ok; | |
1502 | net_stats->tx_packets = hw_stats->tx_ok; | |
1503 | net_stats->rx_bytes = hw_stats->rx_byte_cnt; | |
1504 | net_stats->tx_bytes = hw_stats->tx_byte_cnt; | |
1505 | net_stats->multicast = hw_stats->rx_mcast; | |
1506 | net_stats->collisions = hw_stats->tx_1_col + | |
1507 | hw_stats->tx_2_col * 2 + | |
1508 | hw_stats->tx_late_col + hw_stats->tx_abort_col; | |
1509 | net_stats->rx_errors = hw_stats->rx_frag + hw_stats->rx_fcs_err + | |
1510 | hw_stats->rx_len_err + hw_stats->rx_sz_ov + | |
1511 | hw_stats->rx_rrd_ov + hw_stats->rx_align_err; | |
1512 | net_stats->rx_fifo_errors = hw_stats->rx_rxf_ov; | |
1513 | net_stats->rx_length_errors = hw_stats->rx_len_err; | |
1514 | net_stats->rx_crc_errors = hw_stats->rx_fcs_err; | |
1515 | net_stats->rx_frame_errors = hw_stats->rx_align_err; | |
1516 | net_stats->rx_over_errors = hw_stats->rx_rrd_ov + hw_stats->rx_rxf_ov; | |
1517 | ||
1518 | net_stats->rx_missed_errors = hw_stats->rx_rrd_ov + hw_stats->rx_rxf_ov; | |
1519 | ||
1520 | net_stats->tx_errors = hw_stats->tx_late_col + hw_stats->tx_abort_col + | |
1521 | hw_stats->tx_underrun + hw_stats->tx_trunc; | |
1522 | net_stats->tx_fifo_errors = hw_stats->tx_underrun; | |
1523 | net_stats->tx_aborted_errors = hw_stats->tx_abort_col; | |
1524 | net_stats->tx_window_errors = hw_stats->tx_late_col; | |
1525 | ||
a2c483a1 | 1526 | return net_stats; |
43250ddd JY |
1527 | } |
1528 | ||
1529 | static inline void atl1c_clear_phy_int(struct atl1c_adapter *adapter) | |
1530 | { | |
1531 | u16 phy_data; | |
1532 | ||
1533 | spin_lock(&adapter->mdio_lock); | |
1534 | atl1c_read_phy_reg(&adapter->hw, MII_ISR, &phy_data); | |
1535 | spin_unlock(&adapter->mdio_lock); | |
1536 | } | |
1537 | ||
1538 | static bool atl1c_clean_tx_irq(struct atl1c_adapter *adapter, | |
1539 | enum atl1c_trans_queue type) | |
1540 | { | |
64699336 | 1541 | struct atl1c_tpd_ring *tpd_ring = &adapter->tpd_ring[type]; |
43250ddd | 1542 | struct atl1c_buffer *buffer_info; |
c6060be4 | 1543 | struct pci_dev *pdev = adapter->pdev; |
43250ddd JY |
1544 | u16 next_to_clean = atomic_read(&tpd_ring->next_to_clean); |
1545 | u16 hw_next_to_clean; | |
0af48336 | 1546 | u16 reg; |
43250ddd | 1547 | |
0af48336 | 1548 | reg = type == atl1c_trans_high ? REG_TPD_PRI1_CIDX : REG_TPD_PRI0_CIDX; |
43250ddd | 1549 | |
0af48336 | 1550 | AT_READ_REGW(&adapter->hw, reg, &hw_next_to_clean); |
43250ddd JY |
1551 | |
1552 | while (next_to_clean != hw_next_to_clean) { | |
1553 | buffer_info = &tpd_ring->buffer_info[next_to_clean]; | |
c6060be4 | 1554 | atl1c_clean_buffer(pdev, buffer_info, 1); |
43250ddd JY |
1555 | if (++next_to_clean == tpd_ring->count) |
1556 | next_to_clean = 0; | |
1557 | atomic_set(&tpd_ring->next_to_clean, next_to_clean); | |
1558 | } | |
1559 | ||
1560 | if (netif_queue_stopped(adapter->netdev) && | |
1561 | netif_carrier_ok(adapter->netdev)) { | |
1562 | netif_wake_queue(adapter->netdev); | |
1563 | } | |
1564 | ||
1565 | return true; | |
1566 | } | |
1567 | ||
49ce9c2c | 1568 | /** |
43250ddd JY |
1569 | * atl1c_intr - Interrupt Handler |
1570 | * @irq: interrupt number | |
1571 | * @data: pointer to a network interface device structure | |
43250ddd JY |
1572 | */ |
1573 | static irqreturn_t atl1c_intr(int irq, void *data) | |
1574 | { | |
1575 | struct net_device *netdev = data; | |
1576 | struct atl1c_adapter *adapter = netdev_priv(netdev); | |
1577 | struct pci_dev *pdev = adapter->pdev; | |
1578 | struct atl1c_hw *hw = &adapter->hw; | |
1579 | int max_ints = AT_MAX_INT_WORK; | |
1580 | int handled = IRQ_NONE; | |
1581 | u32 status; | |
1582 | u32 reg_data; | |
1583 | ||
1584 | do { | |
1585 | AT_READ_REG(hw, REG_ISR, ®_data); | |
1586 | status = reg_data & hw->intr_mask; | |
1587 | ||
1588 | if (status == 0 || (status & ISR_DIS_INT) != 0) { | |
1589 | if (max_ints != AT_MAX_INT_WORK) | |
1590 | handled = IRQ_HANDLED; | |
1591 | break; | |
1592 | } | |
1593 | /* link event */ | |
1594 | if (status & ISR_GPHY) | |
1595 | atl1c_clear_phy_int(adapter); | |
1596 | /* Ack ISR */ | |
1597 | AT_WRITE_REG(hw, REG_ISR, status | ISR_DIS_INT); | |
1598 | if (status & ISR_RX_PKT) { | |
1599 | if (likely(napi_schedule_prep(&adapter->napi))) { | |
1600 | hw->intr_mask &= ~ISR_RX_PKT; | |
1601 | AT_WRITE_REG(hw, REG_IMR, hw->intr_mask); | |
1602 | __napi_schedule(&adapter->napi); | |
1603 | } | |
1604 | } | |
1605 | if (status & ISR_TX_PKT) | |
1606 | atl1c_clean_tx_irq(adapter, atl1c_trans_normal); | |
1607 | ||
1608 | handled = IRQ_HANDLED; | |
1609 | /* check if PCIE PHY Link down */ | |
1610 | if (status & ISR_ERROR) { | |
1611 | if (netif_msg_hw(adapter)) | |
1612 | dev_err(&pdev->dev, | |
1613 | "atl1c hardware error (status = 0x%x)\n", | |
1614 | status & ISR_ERROR); | |
1615 | /* reset MAC */ | |
78315457 | 1616 | set_bit(ATL1C_WORK_EVENT_RESET, &adapter->work_event); |
cb190546 | 1617 | schedule_work(&adapter->common_task); |
8f574b35 | 1618 | return IRQ_HANDLED; |
43250ddd JY |
1619 | } |
1620 | ||
1621 | if (status & ISR_OVER) | |
1622 | if (netif_msg_intr(adapter)) | |
1623 | dev_warn(&pdev->dev, | |
af901ca1 | 1624 | "TX/RX overflow (status = 0x%x)\n", |
43250ddd JY |
1625 | status & ISR_OVER); |
1626 | ||
1627 | /* link event */ | |
1628 | if (status & (ISR_GPHY | ISR_MANUAL)) { | |
a2c483a1 | 1629 | netdev->stats.tx_carrier_errors++; |
43250ddd JY |
1630 | atl1c_link_chg_event(adapter); |
1631 | break; | |
1632 | } | |
1633 | ||
1634 | } while (--max_ints > 0); | |
1635 | /* re-enable Interrupt*/ | |
1636 | AT_WRITE_REG(&adapter->hw, REG_ISR, 0); | |
1637 | return handled; | |
1638 | } | |
1639 | ||
1640 | static inline void atl1c_rx_checksum(struct atl1c_adapter *adapter, | |
1641 | struct sk_buff *skb, struct atl1c_recv_ret_status *prrs) | |
1642 | { | |
1643 | /* | |
1644 | * The pid field in RRS in not correct sometimes, so we | |
1645 | * cannot figure out if the packet is fragmented or not, | |
1646 | * so we tell the KERNEL CHECKSUM_NONE | |
1647 | */ | |
bc8acf2c | 1648 | skb_checksum_none_assert(skb); |
43250ddd JY |
1649 | } |
1650 | ||
7b701764 ED |
1651 | static struct sk_buff *atl1c_alloc_skb(struct atl1c_adapter *adapter) |
1652 | { | |
1653 | struct sk_buff *skb; | |
1654 | struct page *page; | |
1655 | ||
1656 | if (adapter->rx_frag_size > PAGE_SIZE) | |
1657 | return netdev_alloc_skb(adapter->netdev, | |
1658 | adapter->rx_buffer_len); | |
1659 | ||
1660 | page = adapter->rx_page; | |
1661 | if (!page) { | |
1662 | adapter->rx_page = page = alloc_page(GFP_ATOMIC); | |
1663 | if (unlikely(!page)) | |
1664 | return NULL; | |
1665 | adapter->rx_page_offset = 0; | |
1666 | } | |
1667 | ||
1668 | skb = build_skb(page_address(page) + adapter->rx_page_offset, | |
1669 | adapter->rx_frag_size); | |
1670 | if (likely(skb)) { | |
1671 | adapter->rx_page_offset += adapter->rx_frag_size; | |
1672 | if (adapter->rx_page_offset >= PAGE_SIZE) | |
1673 | adapter->rx_page = NULL; | |
1674 | else | |
1675 | get_page(page); | |
1676 | } | |
1677 | return skb; | |
1678 | } | |
1679 | ||
9f1fd0ef | 1680 | static int atl1c_alloc_rx_buffer(struct atl1c_adapter *adapter) |
43250ddd | 1681 | { |
9f1fd0ef | 1682 | struct atl1c_rfd_ring *rfd_ring = &adapter->rfd_ring; |
43250ddd JY |
1683 | struct pci_dev *pdev = adapter->pdev; |
1684 | struct atl1c_buffer *buffer_info, *next_info; | |
1685 | struct sk_buff *skb; | |
1686 | void *vir_addr = NULL; | |
1687 | u16 num_alloc = 0; | |
1688 | u16 rfd_next_to_use, next_next; | |
1689 | struct atl1c_rx_free_desc *rfd_desc; | |
ac574804 | 1690 | dma_addr_t mapping; |
43250ddd JY |
1691 | |
1692 | next_next = rfd_next_to_use = rfd_ring->next_to_use; | |
1693 | if (++next_next == rfd_ring->count) | |
1694 | next_next = 0; | |
1695 | buffer_info = &rfd_ring->buffer_info[rfd_next_to_use]; | |
1696 | next_info = &rfd_ring->buffer_info[next_next]; | |
1697 | ||
c6060be4 | 1698 | while (next_info->flags & ATL1C_BUFFER_FREE) { |
43250ddd JY |
1699 | rfd_desc = ATL1C_RFD_DESC(rfd_ring, rfd_next_to_use); |
1700 | ||
7b701764 | 1701 | skb = atl1c_alloc_skb(adapter); |
43250ddd JY |
1702 | if (unlikely(!skb)) { |
1703 | if (netif_msg_rx_err(adapter)) | |
1704 | dev_warn(&pdev->dev, "alloc rx buffer failed\n"); | |
1705 | break; | |
1706 | } | |
1707 | ||
1708 | /* | |
1709 | * Make buffer alignment 2 beyond a 16 byte boundary | |
1710 | * this will result in a 16 byte aligned IP header after | |
1711 | * the 14 byte MAC header is removed | |
1712 | */ | |
1713 | vir_addr = skb->data; | |
c6060be4 | 1714 | ATL1C_SET_BUFFER_STATE(buffer_info, ATL1C_BUFFER_BUSY); |
43250ddd JY |
1715 | buffer_info->skb = skb; |
1716 | buffer_info->length = adapter->rx_buffer_len; | |
ac574804 | 1717 | mapping = pci_map_single(pdev, vir_addr, |
43250ddd JY |
1718 | buffer_info->length, |
1719 | PCI_DMA_FROMDEVICE); | |
ac574804 HX |
1720 | if (unlikely(pci_dma_mapping_error(pdev, mapping))) { |
1721 | dev_kfree_skb(skb); | |
1722 | buffer_info->skb = NULL; | |
1723 | buffer_info->length = 0; | |
1724 | ATL1C_SET_BUFFER_STATE(buffer_info, ATL1C_BUFFER_FREE); | |
1725 | netif_warn(adapter, rx_err, adapter->netdev, "RX pci_map_single failed"); | |
1726 | break; | |
1727 | } | |
1728 | buffer_info->dma = mapping; | |
4b45e342 JY |
1729 | ATL1C_SET_PCIMAP_TYPE(buffer_info, ATL1C_PCIMAP_SINGLE, |
1730 | ATL1C_PCIMAP_FROMDEVICE); | |
43250ddd JY |
1731 | rfd_desc->buffer_addr = cpu_to_le64(buffer_info->dma); |
1732 | rfd_next_to_use = next_next; | |
1733 | if (++next_next == rfd_ring->count) | |
1734 | next_next = 0; | |
1735 | buffer_info = &rfd_ring->buffer_info[rfd_next_to_use]; | |
1736 | next_info = &rfd_ring->buffer_info[next_next]; | |
1737 | num_alloc++; | |
1738 | } | |
1739 | ||
1740 | if (num_alloc) { | |
1741 | /* TODO: update mailbox here */ | |
1742 | wmb(); | |
1743 | rfd_ring->next_to_use = rfd_next_to_use; | |
9f1fd0ef | 1744 | AT_WRITE_REG(&adapter->hw, REG_MB_RFD0_PROD_IDX, |
43250ddd JY |
1745 | rfd_ring->next_to_use & MB_RFDX_PROD_IDX_MASK); |
1746 | } | |
1747 | ||
1748 | return num_alloc; | |
1749 | } | |
1750 | ||
1751 | static void atl1c_clean_rrd(struct atl1c_rrd_ring *rrd_ring, | |
1752 | struct atl1c_recv_ret_status *rrs, u16 num) | |
1753 | { | |
1754 | u16 i; | |
1755 | /* the relationship between rrd and rfd is one map one */ | |
1756 | for (i = 0; i < num; i++, rrs = ATL1C_RRD_DESC(rrd_ring, | |
1757 | rrd_ring->next_to_clean)) { | |
1758 | rrs->word3 &= ~RRS_RXD_UPDATED; | |
1759 | if (++rrd_ring->next_to_clean == rrd_ring->count) | |
1760 | rrd_ring->next_to_clean = 0; | |
1761 | } | |
1762 | } | |
1763 | ||
1764 | static void atl1c_clean_rfd(struct atl1c_rfd_ring *rfd_ring, | |
1765 | struct atl1c_recv_ret_status *rrs, u16 num) | |
1766 | { | |
1767 | u16 i; | |
1768 | u16 rfd_index; | |
1769 | struct atl1c_buffer *buffer_info = rfd_ring->buffer_info; | |
1770 | ||
1771 | rfd_index = (rrs->word0 >> RRS_RX_RFD_INDEX_SHIFT) & | |
1772 | RRS_RX_RFD_INDEX_MASK; | |
1773 | for (i = 0; i < num; i++) { | |
1774 | buffer_info[rfd_index].skb = NULL; | |
c6060be4 JY |
1775 | ATL1C_SET_BUFFER_STATE(&buffer_info[rfd_index], |
1776 | ATL1C_BUFFER_FREE); | |
43250ddd JY |
1777 | if (++rfd_index == rfd_ring->count) |
1778 | rfd_index = 0; | |
1779 | } | |
1780 | rfd_ring->next_to_clean = rfd_index; | |
1781 | } | |
1782 | ||
9f1fd0ef | 1783 | static void atl1c_clean_rx_irq(struct atl1c_adapter *adapter, |
43250ddd JY |
1784 | int *work_done, int work_to_do) |
1785 | { | |
1786 | u16 rfd_num, rfd_index; | |
1787 | u16 count = 0; | |
1788 | u16 length; | |
1789 | struct pci_dev *pdev = adapter->pdev; | |
1790 | struct net_device *netdev = adapter->netdev; | |
9f1fd0ef HX |
1791 | struct atl1c_rfd_ring *rfd_ring = &adapter->rfd_ring; |
1792 | struct atl1c_rrd_ring *rrd_ring = &adapter->rrd_ring; | |
43250ddd JY |
1793 | struct sk_buff *skb; |
1794 | struct atl1c_recv_ret_status *rrs; | |
1795 | struct atl1c_buffer *buffer_info; | |
1796 | ||
1797 | while (1) { | |
1798 | if (*work_done >= work_to_do) | |
1799 | break; | |
1800 | rrs = ATL1C_RRD_DESC(rrd_ring, rrd_ring->next_to_clean); | |
1801 | if (likely(RRS_RXD_IS_VALID(rrs->word3))) { | |
1802 | rfd_num = (rrs->word0 >> RRS_RX_RFD_CNT_SHIFT) & | |
1803 | RRS_RX_RFD_CNT_MASK; | |
37b76c69 | 1804 | if (unlikely(rfd_num != 1)) |
43250ddd JY |
1805 | /* TODO support mul rfd*/ |
1806 | if (netif_msg_rx_err(adapter)) | |
1807 | dev_warn(&pdev->dev, | |
1808 | "Multi rfd not support yet!\n"); | |
1809 | goto rrs_checked; | |
1810 | } else { | |
1811 | break; | |
1812 | } | |
1813 | rrs_checked: | |
1814 | atl1c_clean_rrd(rrd_ring, rrs, rfd_num); | |
1815 | if (rrs->word3 & (RRS_RX_ERR_SUM | RRS_802_3_LEN_ERR)) { | |
1816 | atl1c_clean_rfd(rfd_ring, rrs, rfd_num); | |
1817 | if (netif_msg_rx_err(adapter)) | |
1818 | dev_warn(&pdev->dev, | |
1819 | "wrong packet! rrs word3 is %x\n", | |
1820 | rrs->word3); | |
1821 | continue; | |
1822 | } | |
1823 | ||
1824 | length = le16_to_cpu((rrs->word3 >> RRS_PKT_SIZE_SHIFT) & | |
1825 | RRS_PKT_SIZE_MASK); | |
1826 | /* Good Receive */ | |
1827 | if (likely(rfd_num == 1)) { | |
1828 | rfd_index = (rrs->word0 >> RRS_RX_RFD_INDEX_SHIFT) & | |
1829 | RRS_RX_RFD_INDEX_MASK; | |
1830 | buffer_info = &rfd_ring->buffer_info[rfd_index]; | |
1831 | pci_unmap_single(pdev, buffer_info->dma, | |
1832 | buffer_info->length, PCI_DMA_FROMDEVICE); | |
1833 | skb = buffer_info->skb; | |
1834 | } else { | |
1835 | /* TODO */ | |
1836 | if (netif_msg_rx_err(adapter)) | |
1837 | dev_warn(&pdev->dev, | |
1838 | "Multi rfd not support yet!\n"); | |
1839 | break; | |
1840 | } | |
1841 | atl1c_clean_rfd(rfd_ring, rrs, rfd_num); | |
1842 | skb_put(skb, length - ETH_FCS_LEN); | |
1843 | skb->protocol = eth_type_trans(skb, netdev); | |
43250ddd | 1844 | atl1c_rx_checksum(adapter, skb, rrs); |
46facce9 | 1845 | if (rrs->word3 & RRS_VLAN_INS) { |
43250ddd JY |
1846 | u16 vlan; |
1847 | ||
1848 | AT_TAG_TO_VLAN(rrs->vlan_tag, vlan); | |
1849 | vlan = le16_to_cpu(vlan); | |
86a9bad3 | 1850 | __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlan); |
46facce9 JP |
1851 | } |
1852 | netif_receive_skb(skb); | |
43250ddd | 1853 | |
43250ddd JY |
1854 | (*work_done)++; |
1855 | count++; | |
1856 | } | |
1857 | if (count) | |
9f1fd0ef | 1858 | atl1c_alloc_rx_buffer(adapter); |
43250ddd JY |
1859 | } |
1860 | ||
49ce9c2c | 1861 | /** |
43250ddd | 1862 | * atl1c_clean - NAPI Rx polling callback |
43250ddd JY |
1863 | */ |
1864 | static int atl1c_clean(struct napi_struct *napi, int budget) | |
1865 | { | |
1866 | struct atl1c_adapter *adapter = | |
1867 | container_of(napi, struct atl1c_adapter, napi); | |
1868 | int work_done = 0; | |
1869 | ||
1870 | /* Keep link state information with original netdev */ | |
1871 | if (!netif_carrier_ok(adapter->netdev)) | |
1872 | goto quit_polling; | |
1873 | /* just enable one RXQ */ | |
9f1fd0ef | 1874 | atl1c_clean_rx_irq(adapter, &work_done, budget); |
43250ddd JY |
1875 | |
1876 | if (work_done < budget) { | |
1877 | quit_polling: | |
1878 | napi_complete(napi); | |
1879 | adapter->hw.intr_mask |= ISR_RX_PKT; | |
1880 | AT_WRITE_REG(&adapter->hw, REG_IMR, adapter->hw.intr_mask); | |
1881 | } | |
1882 | return work_done; | |
1883 | } | |
1884 | ||
1885 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
1886 | ||
1887 | /* | |
1888 | * Polling 'interrupt' - used by things like netconsole to send skbs | |
1889 | * without having to re-enable interrupts. It's not called while | |
1890 | * the interrupt routine is executing. | |
1891 | */ | |
1892 | static void atl1c_netpoll(struct net_device *netdev) | |
1893 | { | |
1894 | struct atl1c_adapter *adapter = netdev_priv(netdev); | |
1895 | ||
1896 | disable_irq(adapter->pdev->irq); | |
1897 | atl1c_intr(adapter->pdev->irq, netdev); | |
1898 | enable_irq(adapter->pdev->irq); | |
1899 | } | |
1900 | #endif | |
1901 | ||
1902 | static inline u16 atl1c_tpd_avail(struct atl1c_adapter *adapter, enum atl1c_trans_queue type) | |
1903 | { | |
1904 | struct atl1c_tpd_ring *tpd_ring = &adapter->tpd_ring[type]; | |
1905 | u16 next_to_use = 0; | |
1906 | u16 next_to_clean = 0; | |
1907 | ||
1908 | next_to_clean = atomic_read(&tpd_ring->next_to_clean); | |
1909 | next_to_use = tpd_ring->next_to_use; | |
1910 | ||
1911 | return (u16)(next_to_clean > next_to_use) ? | |
1912 | (next_to_clean - next_to_use - 1) : | |
1913 | (tpd_ring->count + next_to_clean - next_to_use - 1); | |
1914 | } | |
1915 | ||
1916 | /* | |
1917 | * get next usable tpd | |
1918 | * Note: should call atl1c_tdp_avail to make sure | |
1919 | * there is enough tpd to use | |
1920 | */ | |
1921 | static struct atl1c_tpd_desc *atl1c_get_tpd(struct atl1c_adapter *adapter, | |
1922 | enum atl1c_trans_queue type) | |
1923 | { | |
1924 | struct atl1c_tpd_ring *tpd_ring = &adapter->tpd_ring[type]; | |
1925 | struct atl1c_tpd_desc *tpd_desc; | |
1926 | u16 next_to_use = 0; | |
1927 | ||
1928 | next_to_use = tpd_ring->next_to_use; | |
1929 | if (++tpd_ring->next_to_use == tpd_ring->count) | |
1930 | tpd_ring->next_to_use = 0; | |
1931 | tpd_desc = ATL1C_TPD_DESC(tpd_ring, next_to_use); | |
1932 | memset(tpd_desc, 0, sizeof(struct atl1c_tpd_desc)); | |
1933 | return tpd_desc; | |
1934 | } | |
1935 | ||
1936 | static struct atl1c_buffer * | |
1937 | atl1c_get_tx_buffer(struct atl1c_adapter *adapter, struct atl1c_tpd_desc *tpd) | |
1938 | { | |
1939 | struct atl1c_tpd_ring *tpd_ring = adapter->tpd_ring; | |
1940 | ||
1941 | return &tpd_ring->buffer_info[tpd - | |
1942 | (struct atl1c_tpd_desc *)tpd_ring->desc]; | |
1943 | } | |
1944 | ||
1945 | /* Calculate the transmit packet descript needed*/ | |
1946 | static u16 atl1c_cal_tpd_req(const struct sk_buff *skb) | |
1947 | { | |
1948 | u16 tpd_req; | |
1949 | u16 proto_hdr_len = 0; | |
1950 | ||
1951 | tpd_req = skb_shinfo(skb)->nr_frags + 1; | |
1952 | ||
1953 | if (skb_is_gso(skb)) { | |
1954 | proto_hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); | |
1955 | if (proto_hdr_len < skb_headlen(skb)) | |
1956 | tpd_req++; | |
1957 | if (skb_shinfo(skb)->gso_type & SKB_GSO_TCPV6) | |
1958 | tpd_req++; | |
1959 | } | |
1960 | return tpd_req; | |
1961 | } | |
1962 | ||
1963 | static int atl1c_tso_csum(struct atl1c_adapter *adapter, | |
1964 | struct sk_buff *skb, | |
1965 | struct atl1c_tpd_desc **tpd, | |
1966 | enum atl1c_trans_queue type) | |
1967 | { | |
1968 | struct pci_dev *pdev = adapter->pdev; | |
1969 | u8 hdr_len; | |
1970 | u32 real_len; | |
1971 | unsigned short offload_type; | |
1972 | int err; | |
1973 | ||
1974 | if (skb_is_gso(skb)) { | |
1975 | if (skb_header_cloned(skb)) { | |
1976 | err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); | |
1977 | if (unlikely(err)) | |
1978 | return -1; | |
1979 | } | |
1980 | offload_type = skb_shinfo(skb)->gso_type; | |
1981 | ||
1982 | if (offload_type & SKB_GSO_TCPV4) { | |
1983 | real_len = (((unsigned char *)ip_hdr(skb) - skb->data) | |
1984 | + ntohs(ip_hdr(skb)->tot_len)); | |
1985 | ||
1986 | if (real_len < skb->len) | |
1987 | pskb_trim(skb, real_len); | |
1988 | ||
1989 | hdr_len = (skb_transport_offset(skb) + tcp_hdrlen(skb)); | |
1990 | if (unlikely(skb->len == hdr_len)) { | |
1991 | /* only xsum need */ | |
1992 | if (netif_msg_tx_queued(adapter)) | |
1993 | dev_warn(&pdev->dev, | |
1994 | "IPV4 tso with zero data??\n"); | |
1995 | goto check_sum; | |
1996 | } else { | |
1997 | ip_hdr(skb)->check = 0; | |
1998 | tcp_hdr(skb)->check = ~csum_tcpudp_magic( | |
1999 | ip_hdr(skb)->saddr, | |
2000 | ip_hdr(skb)->daddr, | |
2001 | 0, IPPROTO_TCP, 0); | |
2002 | (*tpd)->word1 |= 1 << TPD_IPV4_PACKET_SHIFT; | |
2003 | } | |
2004 | } | |
2005 | ||
2006 | if (offload_type & SKB_GSO_TCPV6) { | |
2007 | struct atl1c_tpd_ext_desc *etpd = | |
2008 | *(struct atl1c_tpd_ext_desc **)(tpd); | |
2009 | ||
2010 | memset(etpd, 0, sizeof(struct atl1c_tpd_ext_desc)); | |
2011 | *tpd = atl1c_get_tpd(adapter, type); | |
2012 | ipv6_hdr(skb)->payload_len = 0; | |
2013 | /* check payload == 0 byte ? */ | |
2014 | hdr_len = (skb_transport_offset(skb) + tcp_hdrlen(skb)); | |
2015 | if (unlikely(skb->len == hdr_len)) { | |
2016 | /* only xsum need */ | |
2017 | if (netif_msg_tx_queued(adapter)) | |
2018 | dev_warn(&pdev->dev, | |
2019 | "IPV6 tso with zero data??\n"); | |
2020 | goto check_sum; | |
2021 | } else | |
2022 | tcp_hdr(skb)->check = ~csum_ipv6_magic( | |
2023 | &ipv6_hdr(skb)->saddr, | |
2024 | &ipv6_hdr(skb)->daddr, | |
2025 | 0, IPPROTO_TCP, 0); | |
2026 | etpd->word1 |= 1 << TPD_LSO_EN_SHIFT; | |
2027 | etpd->word1 |= 1 << TPD_LSO_VER_SHIFT; | |
2028 | etpd->pkt_len = cpu_to_le32(skb->len); | |
2029 | (*tpd)->word1 |= 1 << TPD_LSO_VER_SHIFT; | |
2030 | } | |
2031 | ||
2032 | (*tpd)->word1 |= 1 << TPD_LSO_EN_SHIFT; | |
2033 | (*tpd)->word1 |= (skb_transport_offset(skb) & TPD_TCPHDR_OFFSET_MASK) << | |
2034 | TPD_TCPHDR_OFFSET_SHIFT; | |
2035 | (*tpd)->word1 |= (skb_shinfo(skb)->gso_size & TPD_MSS_MASK) << | |
2036 | TPD_MSS_SHIFT; | |
2037 | return 0; | |
2038 | } | |
2039 | ||
2040 | check_sum: | |
2041 | if (likely(skb->ip_summed == CHECKSUM_PARTIAL)) { | |
2042 | u8 css, cso; | |
0d0b1672 | 2043 | cso = skb_checksum_start_offset(skb); |
43250ddd JY |
2044 | |
2045 | if (unlikely(cso & 0x1)) { | |
2046 | if (netif_msg_tx_err(adapter)) | |
2047 | dev_err(&adapter->pdev->dev, | |
2048 | "payload offset should not an event number\n"); | |
2049 | return -1; | |
2050 | } else { | |
2051 | css = cso + skb->csum_offset; | |
2052 | ||
2053 | (*tpd)->word1 |= ((cso >> 1) & TPD_PLOADOFFSET_MASK) << | |
2054 | TPD_PLOADOFFSET_SHIFT; | |
2055 | (*tpd)->word1 |= ((css >> 1) & TPD_CCSUM_OFFSET_MASK) << | |
2056 | TPD_CCSUM_OFFSET_SHIFT; | |
2057 | (*tpd)->word1 |= 1 << TPD_CCSUM_EN_SHIFT; | |
2058 | } | |
2059 | } | |
2060 | return 0; | |
2061 | } | |
2062 | ||
ac574804 HX |
2063 | static void atl1c_tx_rollback(struct atl1c_adapter *adpt, |
2064 | struct atl1c_tpd_desc *first_tpd, | |
2065 | enum atl1c_trans_queue type) | |
2066 | { | |
2067 | struct atl1c_tpd_ring *tpd_ring = &adpt->tpd_ring[type]; | |
2068 | struct atl1c_buffer *buffer_info; | |
2069 | struct atl1c_tpd_desc *tpd; | |
2070 | u16 first_index, index; | |
2071 | ||
2072 | first_index = first_tpd - (struct atl1c_tpd_desc *)tpd_ring->desc; | |
2073 | index = first_index; | |
2074 | while (index != tpd_ring->next_to_use) { | |
2075 | tpd = ATL1C_TPD_DESC(tpd_ring, index); | |
2076 | buffer_info = &tpd_ring->buffer_info[index]; | |
2077 | atl1c_clean_buffer(adpt->pdev, buffer_info, 0); | |
2078 | memset(tpd, 0, sizeof(struct atl1c_tpd_desc)); | |
2079 | if (++index == tpd_ring->count) | |
2080 | index = 0; | |
2081 | } | |
2082 | tpd_ring->next_to_use = first_index; | |
2083 | } | |
2084 | ||
2085 | static int atl1c_tx_map(struct atl1c_adapter *adapter, | |
43250ddd JY |
2086 | struct sk_buff *skb, struct atl1c_tpd_desc *tpd, |
2087 | enum atl1c_trans_queue type) | |
2088 | { | |
2089 | struct atl1c_tpd_desc *use_tpd = NULL; | |
2090 | struct atl1c_buffer *buffer_info = NULL; | |
2091 | u16 buf_len = skb_headlen(skb); | |
2092 | u16 map_len = 0; | |
2093 | u16 mapped_len = 0; | |
2094 | u16 hdr_len = 0; | |
2095 | u16 nr_frags; | |
2096 | u16 f; | |
2097 | int tso; | |
2098 | ||
2099 | nr_frags = skb_shinfo(skb)->nr_frags; | |
2100 | tso = (tpd->word1 >> TPD_LSO_EN_SHIFT) & TPD_LSO_EN_MASK; | |
2101 | if (tso) { | |
2102 | /* TSO */ | |
2103 | map_len = hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); | |
2104 | use_tpd = tpd; | |
2105 | ||
2106 | buffer_info = atl1c_get_tx_buffer(adapter, use_tpd); | |
2107 | buffer_info->length = map_len; | |
2108 | buffer_info->dma = pci_map_single(adapter->pdev, | |
2109 | skb->data, hdr_len, PCI_DMA_TODEVICE); | |
ac574804 HX |
2110 | if (unlikely(pci_dma_mapping_error(adapter->pdev, |
2111 | buffer_info->dma))) | |
2112 | goto err_dma; | |
7cb08d7f | 2113 | ATL1C_SET_BUFFER_STATE(buffer_info, ATL1C_BUFFER_BUSY); |
4b45e342 JY |
2114 | ATL1C_SET_PCIMAP_TYPE(buffer_info, ATL1C_PCIMAP_SINGLE, |
2115 | ATL1C_PCIMAP_TODEVICE); | |
43250ddd JY |
2116 | mapped_len += map_len; |
2117 | use_tpd->buffer_addr = cpu_to_le64(buffer_info->dma); | |
2118 | use_tpd->buffer_len = cpu_to_le16(buffer_info->length); | |
2119 | } | |
2120 | ||
2121 | if (mapped_len < buf_len) { | |
2122 | /* mapped_len == 0, means we should use the first tpd, | |
2123 | which is given by caller */ | |
2124 | if (mapped_len == 0) | |
2125 | use_tpd = tpd; | |
2126 | else { | |
2127 | use_tpd = atl1c_get_tpd(adapter, type); | |
43250ddd JY |
2128 | memcpy(use_tpd, tpd, sizeof(struct atl1c_tpd_desc)); |
2129 | } | |
2130 | buffer_info = atl1c_get_tx_buffer(adapter, use_tpd); | |
2131 | buffer_info->length = buf_len - mapped_len; | |
2132 | buffer_info->dma = | |
2133 | pci_map_single(adapter->pdev, skb->data + mapped_len, | |
2134 | buffer_info->length, PCI_DMA_TODEVICE); | |
ac574804 HX |
2135 | if (unlikely(pci_dma_mapping_error(adapter->pdev, |
2136 | buffer_info->dma))) | |
2137 | goto err_dma; | |
2138 | ||
c6060be4 | 2139 | ATL1C_SET_BUFFER_STATE(buffer_info, ATL1C_BUFFER_BUSY); |
4b45e342 JY |
2140 | ATL1C_SET_PCIMAP_TYPE(buffer_info, ATL1C_PCIMAP_SINGLE, |
2141 | ATL1C_PCIMAP_TODEVICE); | |
43250ddd JY |
2142 | use_tpd->buffer_addr = cpu_to_le64(buffer_info->dma); |
2143 | use_tpd->buffer_len = cpu_to_le16(buffer_info->length); | |
2144 | } | |
2145 | ||
2146 | for (f = 0; f < nr_frags; f++) { | |
2147 | struct skb_frag_struct *frag; | |
2148 | ||
2149 | frag = &skb_shinfo(skb)->frags[f]; | |
2150 | ||
2151 | use_tpd = atl1c_get_tpd(adapter, type); | |
2152 | memcpy(use_tpd, tpd, sizeof(struct atl1c_tpd_desc)); | |
2153 | ||
2154 | buffer_info = atl1c_get_tx_buffer(adapter, use_tpd); | |
9e903e08 | 2155 | buffer_info->length = skb_frag_size(frag); |
8d1bb865 IC |
2156 | buffer_info->dma = skb_frag_dma_map(&adapter->pdev->dev, |
2157 | frag, 0, | |
2158 | buffer_info->length, | |
5d6bcdfe | 2159 | DMA_TO_DEVICE); |
ac574804 HX |
2160 | if (dma_mapping_error(&adapter->pdev->dev, buffer_info->dma)) |
2161 | goto err_dma; | |
2162 | ||
c6060be4 | 2163 | ATL1C_SET_BUFFER_STATE(buffer_info, ATL1C_BUFFER_BUSY); |
4b45e342 JY |
2164 | ATL1C_SET_PCIMAP_TYPE(buffer_info, ATL1C_PCIMAP_PAGE, |
2165 | ATL1C_PCIMAP_TODEVICE); | |
43250ddd JY |
2166 | use_tpd->buffer_addr = cpu_to_le64(buffer_info->dma); |
2167 | use_tpd->buffer_len = cpu_to_le16(buffer_info->length); | |
2168 | } | |
2169 | ||
2170 | /* The last tpd */ | |
2171 | use_tpd->word1 |= 1 << TPD_EOP_SHIFT; | |
2172 | /* The last buffer info contain the skb address, | |
2173 | so it will be free after unmap */ | |
2174 | buffer_info->skb = skb; | |
ac574804 HX |
2175 | |
2176 | return 0; | |
2177 | ||
2178 | err_dma: | |
2179 | buffer_info->dma = 0; | |
2180 | buffer_info->length = 0; | |
2181 | return -1; | |
43250ddd JY |
2182 | } |
2183 | ||
2184 | static void atl1c_tx_queue(struct atl1c_adapter *adapter, struct sk_buff *skb, | |
2185 | struct atl1c_tpd_desc *tpd, enum atl1c_trans_queue type) | |
2186 | { | |
2187 | struct atl1c_tpd_ring *tpd_ring = &adapter->tpd_ring[type]; | |
0af48336 | 2188 | u16 reg; |
43250ddd | 2189 | |
0af48336 HX |
2190 | reg = type == atl1c_trans_high ? REG_TPD_PRI1_PIDX : REG_TPD_PRI0_PIDX; |
2191 | AT_WRITE_REGW(&adapter->hw, reg, tpd_ring->next_to_use); | |
43250ddd JY |
2192 | } |
2193 | ||
61357325 SH |
2194 | static netdev_tx_t atl1c_xmit_frame(struct sk_buff *skb, |
2195 | struct net_device *netdev) | |
43250ddd JY |
2196 | { |
2197 | struct atl1c_adapter *adapter = netdev_priv(netdev); | |
2198 | unsigned long flags; | |
2199 | u16 tpd_req = 1; | |
2200 | struct atl1c_tpd_desc *tpd; | |
2201 | enum atl1c_trans_queue type = atl1c_trans_normal; | |
2202 | ||
2203 | if (test_bit(__AT_DOWN, &adapter->flags)) { | |
2204 | dev_kfree_skb_any(skb); | |
2205 | return NETDEV_TX_OK; | |
2206 | } | |
2207 | ||
2208 | tpd_req = atl1c_cal_tpd_req(skb); | |
2209 | if (!spin_trylock_irqsave(&adapter->tx_lock, flags)) { | |
2210 | if (netif_msg_pktdata(adapter)) | |
2211 | dev_info(&adapter->pdev->dev, "tx locked\n"); | |
2212 | return NETDEV_TX_LOCKED; | |
2213 | } | |
43250ddd JY |
2214 | |
2215 | if (atl1c_tpd_avail(adapter, type) < tpd_req) { | |
2216 | /* no enough descriptor, just stop queue */ | |
2217 | netif_stop_queue(netdev); | |
2218 | spin_unlock_irqrestore(&adapter->tx_lock, flags); | |
2219 | return NETDEV_TX_BUSY; | |
2220 | } | |
2221 | ||
2222 | tpd = atl1c_get_tpd(adapter, type); | |
2223 | ||
2224 | /* do TSO and check sum */ | |
2225 | if (atl1c_tso_csum(adapter, skb, &tpd, type) != 0) { | |
2226 | spin_unlock_irqrestore(&adapter->tx_lock, flags); | |
2227 | dev_kfree_skb_any(skb); | |
2228 | return NETDEV_TX_OK; | |
2229 | } | |
2230 | ||
eab6d18d | 2231 | if (unlikely(vlan_tx_tag_present(skb))) { |
43250ddd JY |
2232 | u16 vlan = vlan_tx_tag_get(skb); |
2233 | __le16 tag; | |
2234 | ||
2235 | vlan = cpu_to_le16(vlan); | |
2236 | AT_VLAN_TO_TAG(vlan, tag); | |
2237 | tpd->word1 |= 1 << TPD_INS_VTAG_SHIFT; | |
2238 | tpd->vlan_tag = tag; | |
2239 | } | |
2240 | ||
2241 | if (skb_network_offset(skb) != ETH_HLEN) | |
2242 | tpd->word1 |= 1 << TPD_ETH_TYPE_SHIFT; /* Ethernet frame */ | |
2243 | ||
ac574804 HX |
2244 | if (atl1c_tx_map(adapter, skb, tpd, type) < 0) { |
2245 | netif_info(adapter, tx_done, adapter->netdev, | |
2246 | "tx-skb droppted due to dma error\n"); | |
2247 | /* roll back tpd/buffer */ | |
2248 | atl1c_tx_rollback(adapter, tpd, type); | |
2249 | spin_unlock_irqrestore(&adapter->tx_lock, flags); | |
2250 | dev_kfree_skb(skb); | |
2251 | } else { | |
2252 | atl1c_tx_queue(adapter, skb, tpd, type); | |
2253 | spin_unlock_irqrestore(&adapter->tx_lock, flags); | |
2254 | } | |
43250ddd | 2255 | |
43250ddd JY |
2256 | return NETDEV_TX_OK; |
2257 | } | |
2258 | ||
2259 | static void atl1c_free_irq(struct atl1c_adapter *adapter) | |
2260 | { | |
2261 | struct net_device *netdev = adapter->netdev; | |
2262 | ||
2263 | free_irq(adapter->pdev->irq, netdev); | |
2264 | ||
2265 | if (adapter->have_msi) | |
2266 | pci_disable_msi(adapter->pdev); | |
2267 | } | |
2268 | ||
2269 | static int atl1c_request_irq(struct atl1c_adapter *adapter) | |
2270 | { | |
2271 | struct pci_dev *pdev = adapter->pdev; | |
2272 | struct net_device *netdev = adapter->netdev; | |
2273 | int flags = 0; | |
2274 | int err = 0; | |
2275 | ||
2276 | adapter->have_msi = true; | |
2277 | err = pci_enable_msi(adapter->pdev); | |
2278 | if (err) { | |
2279 | if (netif_msg_ifup(adapter)) | |
2280 | dev_err(&pdev->dev, | |
2281 | "Unable to allocate MSI interrupt Error: %d\n", | |
2282 | err); | |
2283 | adapter->have_msi = false; | |
93f7fab4 | 2284 | } |
43250ddd JY |
2285 | |
2286 | if (!adapter->have_msi) | |
2287 | flags |= IRQF_SHARED; | |
9aff7e92 | 2288 | err = request_irq(adapter->pdev->irq, atl1c_intr, flags, |
43250ddd JY |
2289 | netdev->name, netdev); |
2290 | if (err) { | |
2291 | if (netif_msg_ifup(adapter)) | |
2292 | dev_err(&pdev->dev, | |
2293 | "Unable to allocate interrupt Error: %d\n", | |
2294 | err); | |
2295 | if (adapter->have_msi) | |
2296 | pci_disable_msi(adapter->pdev); | |
2297 | return err; | |
2298 | } | |
2299 | if (netif_msg_ifup(adapter)) | |
2300 | dev_dbg(&pdev->dev, "atl1c_request_irq OK\n"); | |
2301 | return err; | |
2302 | } | |
2303 | ||
5e5c0964 HX |
2304 | |
2305 | static void atl1c_reset_dma_ring(struct atl1c_adapter *adapter) | |
2306 | { | |
2307 | /* release tx-pending skbs and reset tx/rx ring index */ | |
2308 | atl1c_clean_tx_ring(adapter, atl1c_trans_normal); | |
2309 | atl1c_clean_tx_ring(adapter, atl1c_trans_high); | |
2310 | atl1c_clean_rx_ring(adapter); | |
2311 | } | |
2312 | ||
0fb1e54e | 2313 | static int atl1c_up(struct atl1c_adapter *adapter) |
43250ddd JY |
2314 | { |
2315 | struct net_device *netdev = adapter->netdev; | |
43250ddd | 2316 | int err; |
43250ddd JY |
2317 | |
2318 | netif_carrier_off(netdev); | |
43250ddd | 2319 | |
5e5c0964 HX |
2320 | err = atl1c_configure(adapter); |
2321 | if (unlikely(err)) | |
43250ddd | 2322 | goto err_up; |
43250ddd JY |
2323 | |
2324 | err = atl1c_request_irq(adapter); | |
2325 | if (unlikely(err)) | |
2326 | goto err_up; | |
2327 | ||
5e5c0964 | 2328 | atl1c_check_link_status(adapter); |
43250ddd JY |
2329 | clear_bit(__AT_DOWN, &adapter->flags); |
2330 | napi_enable(&adapter->napi); | |
2331 | atl1c_irq_enable(adapter); | |
43250ddd JY |
2332 | netif_start_queue(netdev); |
2333 | return err; | |
2334 | ||
2335 | err_up: | |
43250ddd JY |
2336 | atl1c_clean_rx_ring(adapter); |
2337 | return err; | |
2338 | } | |
2339 | ||
0fb1e54e | 2340 | static void atl1c_down(struct atl1c_adapter *adapter) |
43250ddd JY |
2341 | { |
2342 | struct net_device *netdev = adapter->netdev; | |
2343 | ||
2344 | atl1c_del_timer(adapter); | |
cb190546 | 2345 | adapter->work_event = 0; /* clear all event */ |
43250ddd JY |
2346 | /* signal that we're down so the interrupt handler does not |
2347 | * reschedule our watchdog timer */ | |
2348 | set_bit(__AT_DOWN, &adapter->flags); | |
2349 | netif_carrier_off(netdev); | |
2350 | napi_disable(&adapter->napi); | |
2351 | atl1c_irq_disable(adapter); | |
2352 | atl1c_free_irq(adapter); | |
024e1e4d HX |
2353 | /* disable ASPM if device inactive */ |
2354 | atl1c_disable_l0s_l1(&adapter->hw); | |
43250ddd JY |
2355 | /* reset MAC to disable all RX/TX */ |
2356 | atl1c_reset_mac(&adapter->hw); | |
2357 | msleep(1); | |
2358 | ||
2359 | adapter->link_speed = SPEED_0; | |
2360 | adapter->link_duplex = -1; | |
5e5c0964 | 2361 | atl1c_reset_dma_ring(adapter); |
43250ddd JY |
2362 | } |
2363 | ||
49ce9c2c | 2364 | /** |
43250ddd JY |
2365 | * atl1c_open - Called when a network interface is made active |
2366 | * @netdev: network interface device structure | |
2367 | * | |
2368 | * Returns 0 on success, negative value on failure | |
2369 | * | |
2370 | * The open entry point is called when a network interface is made | |
2371 | * active by the system (IFF_UP). At this point all resources needed | |
2372 | * for transmit and receive operations are allocated, the interrupt | |
2373 | * handler is registered with the OS, the watchdog timer is started, | |
2374 | * and the stack is notified that the interface is ready. | |
2375 | */ | |
2376 | static int atl1c_open(struct net_device *netdev) | |
2377 | { | |
2378 | struct atl1c_adapter *adapter = netdev_priv(netdev); | |
2379 | int err; | |
2380 | ||
2381 | /* disallow open during test */ | |
2382 | if (test_bit(__AT_TESTING, &adapter->flags)) | |
2383 | return -EBUSY; | |
2384 | ||
2385 | /* allocate rx/tx dma buffer & descriptors */ | |
2386 | err = atl1c_setup_ring_resources(adapter); | |
2387 | if (unlikely(err)) | |
2388 | return err; | |
2389 | ||
2390 | err = atl1c_up(adapter); | |
2391 | if (unlikely(err)) | |
2392 | goto err_up; | |
2393 | ||
43250ddd JY |
2394 | return 0; |
2395 | ||
2396 | err_up: | |
2397 | atl1c_free_irq(adapter); | |
2398 | atl1c_free_ring_resources(adapter); | |
2399 | atl1c_reset_mac(&adapter->hw); | |
2400 | return err; | |
2401 | } | |
2402 | ||
49ce9c2c | 2403 | /** |
43250ddd JY |
2404 | * atl1c_close - Disables a network interface |
2405 | * @netdev: network interface device structure | |
2406 | * | |
2407 | * Returns 0, this is not allowed to fail | |
2408 | * | |
2409 | * The close entry point is called when an interface is de-activated | |
2410 | * by the OS. The hardware is still under the drivers control, but | |
2411 | * needs to be disabled. A global MAC reset is issued to stop the | |
2412 | * hardware, and all transmit and receive resources are freed. | |
2413 | */ | |
2414 | static int atl1c_close(struct net_device *netdev) | |
2415 | { | |
2416 | struct atl1c_adapter *adapter = netdev_priv(netdev); | |
2417 | ||
2418 | WARN_ON(test_bit(__AT_RESETTING, &adapter->flags)); | |
0aa76ce3 HX |
2419 | set_bit(__AT_DOWN, &adapter->flags); |
2420 | cancel_work_sync(&adapter->common_task); | |
43250ddd JY |
2421 | atl1c_down(adapter); |
2422 | atl1c_free_ring_resources(adapter); | |
2423 | return 0; | |
2424 | } | |
2425 | ||
762e3023 | 2426 | static int atl1c_suspend(struct device *dev) |
43250ddd | 2427 | { |
762e3023 | 2428 | struct pci_dev *pdev = to_pci_dev(dev); |
43250ddd JY |
2429 | struct net_device *netdev = pci_get_drvdata(pdev); |
2430 | struct atl1c_adapter *adapter = netdev_priv(netdev); | |
2431 | struct atl1c_hw *hw = &adapter->hw; | |
43250ddd | 2432 | u32 wufc = adapter->wol; |
43250ddd | 2433 | |
8f574b35 | 2434 | atl1c_disable_l0s_l1(hw); |
43250ddd JY |
2435 | if (netif_running(netdev)) { |
2436 | WARN_ON(test_bit(__AT_RESETTING, &adapter->flags)); | |
2437 | atl1c_down(adapter); | |
2438 | } | |
2439 | netif_device_detach(netdev); | |
8f574b35 JY |
2440 | |
2441 | if (wufc) | |
319d013a | 2442 | if (atl1c_phy_to_ps_link(hw) != 0) |
8f574b35 JY |
2443 | dev_dbg(&pdev->dev, "phy power saving failed"); |
2444 | ||
319d013a | 2445 | atl1c_power_saving(hw, wufc); |
ce5b972b | 2446 | |
43250ddd JY |
2447 | return 0; |
2448 | } | |
2449 | ||
d187c1aa | 2450 | #ifdef CONFIG_PM_SLEEP |
762e3023 | 2451 | static int atl1c_resume(struct device *dev) |
43250ddd | 2452 | { |
762e3023 | 2453 | struct pci_dev *pdev = to_pci_dev(dev); |
43250ddd JY |
2454 | struct net_device *netdev = pci_get_drvdata(pdev); |
2455 | struct atl1c_adapter *adapter = netdev_priv(netdev); | |
2456 | ||
43250ddd | 2457 | AT_WRITE_REG(&adapter->hw, REG_WOL_CTRL, 0); |
ce3ba0c9 | 2458 | atl1c_reset_pcie(&adapter->hw, ATL1C_PCIE_L0S_L1_DISABLE); |
43250ddd JY |
2459 | |
2460 | atl1c_phy_reset(&adapter->hw); | |
2461 | atl1c_reset_mac(&adapter->hw); | |
8f574b35 JY |
2462 | atl1c_phy_init(&adapter->hw); |
2463 | ||
2464 | #if 0 | |
2465 | AT_READ_REG(&adapter->hw, REG_PM_CTRLSTAT, &pm_data); | |
2466 | pm_data &= ~PM_CTRLSTAT_PME_EN; | |
2467 | AT_WRITE_REG(&adapter->hw, REG_PM_CTRLSTAT, pm_data); | |
2468 | #endif | |
2469 | ||
43250ddd JY |
2470 | netif_device_attach(netdev); |
2471 | if (netif_running(netdev)) | |
2472 | atl1c_up(adapter); | |
2473 | ||
2474 | return 0; | |
2475 | } | |
d187c1aa | 2476 | #endif |
43250ddd JY |
2477 | |
2478 | static void atl1c_shutdown(struct pci_dev *pdev) | |
2479 | { | |
762e3023 RW |
2480 | struct net_device *netdev = pci_get_drvdata(pdev); |
2481 | struct atl1c_adapter *adapter = netdev_priv(netdev); | |
2482 | ||
2483 | atl1c_suspend(&pdev->dev); | |
2484 | pci_wake_from_d3(pdev, adapter->wol); | |
2485 | pci_set_power_state(pdev, PCI_D3hot); | |
43250ddd JY |
2486 | } |
2487 | ||
2488 | static const struct net_device_ops atl1c_netdev_ops = { | |
2489 | .ndo_open = atl1c_open, | |
2490 | .ndo_stop = atl1c_close, | |
2491 | .ndo_validate_addr = eth_validate_addr, | |
2492 | .ndo_start_xmit = atl1c_xmit_frame, | |
46facce9 | 2493 | .ndo_set_mac_address = atl1c_set_mac_addr, |
afc4b13d | 2494 | .ndo_set_rx_mode = atl1c_set_multi, |
43250ddd | 2495 | .ndo_change_mtu = atl1c_change_mtu, |
782d640a | 2496 | .ndo_fix_features = atl1c_fix_features, |
46facce9 | 2497 | .ndo_set_features = atl1c_set_features, |
43250ddd JY |
2498 | .ndo_do_ioctl = atl1c_ioctl, |
2499 | .ndo_tx_timeout = atl1c_tx_timeout, | |
2500 | .ndo_get_stats = atl1c_get_stats, | |
43250ddd JY |
2501 | #ifdef CONFIG_NET_POLL_CONTROLLER |
2502 | .ndo_poll_controller = atl1c_netpoll, | |
2503 | #endif | |
2504 | }; | |
2505 | ||
2506 | static int atl1c_init_netdev(struct net_device *netdev, struct pci_dev *pdev) | |
2507 | { | |
2508 | SET_NETDEV_DEV(netdev, &pdev->dev); | |
2509 | pci_set_drvdata(pdev, netdev); | |
2510 | ||
43250ddd JY |
2511 | netdev->netdev_ops = &atl1c_netdev_ops; |
2512 | netdev->watchdog_timeo = AT_TX_WATCHDOG; | |
2513 | atl1c_set_ethtool_ops(netdev); | |
2514 | ||
2515 | /* TODO: add when ready */ | |
f646968f PM |
2516 | netdev->hw_features = NETIF_F_SG | |
2517 | NETIF_F_HW_CSUM | | |
2518 | NETIF_F_HW_VLAN_CTAG_RX | | |
2519 | NETIF_F_TSO | | |
43250ddd | 2520 | NETIF_F_TSO6; |
f646968f PM |
2521 | netdev->features = netdev->hw_features | |
2522 | NETIF_F_HW_VLAN_CTAG_TX; | |
43250ddd JY |
2523 | return 0; |
2524 | } | |
2525 | ||
49ce9c2c | 2526 | /** |
43250ddd JY |
2527 | * atl1c_probe - Device Initialization Routine |
2528 | * @pdev: PCI device information struct | |
2529 | * @ent: entry in atl1c_pci_tbl | |
2530 | * | |
2531 | * Returns 0 on success, negative on failure | |
2532 | * | |
2533 | * atl1c_probe initializes an adapter identified by a pci_dev structure. | |
2534 | * The OS initialization, configuring of the adapter private structure, | |
2535 | * and a hardware reset occur. | |
2536 | */ | |
1dd06ae8 | 2537 | static int atl1c_probe(struct pci_dev *pdev, const struct pci_device_id *ent) |
43250ddd JY |
2538 | { |
2539 | struct net_device *netdev; | |
2540 | struct atl1c_adapter *adapter; | |
2541 | static int cards_found; | |
2542 | ||
2543 | int err = 0; | |
2544 | ||
2545 | /* enable device (incl. PCI PM wakeup and hotplug setup) */ | |
2546 | err = pci_enable_device_mem(pdev); | |
2547 | if (err) { | |
2548 | dev_err(&pdev->dev, "cannot enable PCI device\n"); | |
2549 | return err; | |
2550 | } | |
2551 | ||
2552 | /* | |
2553 | * The atl1c chip can DMA to 64-bit addresses, but it uses a single | |
2554 | * shared register for the high 32 bits, so only a single, aligned, | |
2555 | * 4 GB physical address range can be used at a time. | |
2556 | * | |
2557 | * Supporting 64-bit DMA on this hardware is more trouble than it's | |
2558 | * worth. It is far easier to limit to 32-bit DMA than update | |
2559 | * various kernel subsystems to support the mechanics required by a | |
2560 | * fixed-high-32-bit system. | |
2561 | */ | |
e930438c YH |
2562 | if ((pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) || |
2563 | (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)) { | |
43250ddd JY |
2564 | dev_err(&pdev->dev, "No usable DMA configuration,aborting\n"); |
2565 | goto err_dma; | |
2566 | } | |
2567 | ||
2568 | err = pci_request_regions(pdev, atl1c_driver_name); | |
2569 | if (err) { | |
2570 | dev_err(&pdev->dev, "cannot obtain PCI resources\n"); | |
2571 | goto err_pci_reg; | |
2572 | } | |
2573 | ||
2574 | pci_set_master(pdev); | |
2575 | ||
2576 | netdev = alloc_etherdev(sizeof(struct atl1c_adapter)); | |
2577 | if (netdev == NULL) { | |
2578 | err = -ENOMEM; | |
43250ddd JY |
2579 | goto err_alloc_etherdev; |
2580 | } | |
2581 | ||
2582 | err = atl1c_init_netdev(netdev, pdev); | |
2583 | if (err) { | |
2584 | dev_err(&pdev->dev, "init netdevice failed\n"); | |
2585 | goto err_init_netdev; | |
2586 | } | |
2587 | adapter = netdev_priv(netdev); | |
2588 | adapter->bd_number = cards_found; | |
2589 | adapter->netdev = netdev; | |
2590 | adapter->pdev = pdev; | |
2591 | adapter->hw.adapter = adapter; | |
2592 | adapter->msg_enable = netif_msg_init(-1, atl1c_default_msg); | |
2593 | adapter->hw.hw_addr = ioremap(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0)); | |
2594 | if (!adapter->hw.hw_addr) { | |
2595 | err = -EIO; | |
2596 | dev_err(&pdev->dev, "cannot map device registers\n"); | |
2597 | goto err_ioremap; | |
2598 | } | |
43250ddd JY |
2599 | |
2600 | /* init mii data */ | |
2601 | adapter->mii.dev = netdev; | |
2602 | adapter->mii.mdio_read = atl1c_mdio_read; | |
2603 | adapter->mii.mdio_write = atl1c_mdio_write; | |
2604 | adapter->mii.phy_id_mask = 0x1f; | |
929a5e93 | 2605 | adapter->mii.reg_num_mask = MDIO_CTRL_REG_MASK; |
43250ddd JY |
2606 | netif_napi_add(netdev, &adapter->napi, atl1c_clean, 64); |
2607 | setup_timer(&adapter->phy_config_timer, atl1c_phy_config, | |
2608 | (unsigned long)adapter); | |
2609 | /* setup the private structure */ | |
2610 | err = atl1c_sw_init(adapter); | |
2611 | if (err) { | |
2612 | dev_err(&pdev->dev, "net device private data init failed\n"); | |
2613 | goto err_sw_init; | |
2614 | } | |
ce3ba0c9 | 2615 | atl1c_reset_pcie(&adapter->hw, ATL1C_PCIE_L0S_L1_DISABLE); |
43250ddd JY |
2616 | |
2617 | /* Init GPHY as early as possible due to power saving issue */ | |
2618 | atl1c_phy_reset(&adapter->hw); | |
2619 | ||
2620 | err = atl1c_reset_mac(&adapter->hw); | |
2621 | if (err) { | |
2622 | err = -EIO; | |
2623 | goto err_reset; | |
2624 | } | |
2625 | ||
43250ddd JY |
2626 | /* reset the controller to |
2627 | * put the device in a known good starting state */ | |
2628 | err = atl1c_phy_init(&adapter->hw); | |
2629 | if (err) { | |
2630 | err = -EIO; | |
2631 | goto err_reset; | |
2632 | } | |
6a214fd4 DK |
2633 | if (atl1c_read_mac_addr(&adapter->hw)) { |
2634 | /* got a random MAC address, set NET_ADDR_RANDOM to netdev */ | |
e41b2d7f | 2635 | netdev->addr_assign_type = NET_ADDR_RANDOM; |
43250ddd JY |
2636 | } |
2637 | memcpy(netdev->dev_addr, adapter->hw.mac_addr, netdev->addr_len); | |
43250ddd | 2638 | if (netif_msg_probe(adapter)) |
82991172 | 2639 | dev_dbg(&pdev->dev, "mac address : %pM\n", |
2640 | adapter->hw.mac_addr); | |
43250ddd | 2641 | |
229e6b6e | 2642 | atl1c_hw_set_mac_addr(&adapter->hw, adapter->hw.mac_addr); |
cb190546 JY |
2643 | INIT_WORK(&adapter->common_task, atl1c_common_task); |
2644 | adapter->work_event = 0; | |
43250ddd JY |
2645 | err = register_netdev(netdev); |
2646 | if (err) { | |
2647 | dev_err(&pdev->dev, "register netdevice failed\n"); | |
2648 | goto err_register; | |
2649 | } | |
2650 | ||
2651 | if (netif_msg_probe(adapter)) | |
2652 | dev_info(&pdev->dev, "version %s\n", ATL1C_DRV_VERSION); | |
2653 | cards_found++; | |
2654 | return 0; | |
2655 | ||
2656 | err_reset: | |
2657 | err_register: | |
2658 | err_sw_init: | |
43250ddd JY |
2659 | iounmap(adapter->hw.hw_addr); |
2660 | err_init_netdev: | |
2661 | err_ioremap: | |
2662 | free_netdev(netdev); | |
2663 | err_alloc_etherdev: | |
2664 | pci_release_regions(pdev); | |
2665 | err_pci_reg: | |
2666 | err_dma: | |
2667 | pci_disable_device(pdev); | |
2668 | return err; | |
2669 | } | |
2670 | ||
49ce9c2c | 2671 | /** |
43250ddd JY |
2672 | * atl1c_remove - Device Removal Routine |
2673 | * @pdev: PCI device information struct | |
2674 | * | |
2675 | * atl1c_remove is called by the PCI subsystem to alert the driver | |
2676 | * that it should release a PCI device. The could be caused by a | |
2677 | * Hot-Plug event, or because the driver is going to be removed from | |
2678 | * memory. | |
2679 | */ | |
093d369d | 2680 | static void atl1c_remove(struct pci_dev *pdev) |
43250ddd JY |
2681 | { |
2682 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2683 | struct atl1c_adapter *adapter = netdev_priv(netdev); | |
2684 | ||
2685 | unregister_netdev(netdev); | |
229e6b6e HX |
2686 | /* restore permanent address */ |
2687 | atl1c_hw_set_mac_addr(&adapter->hw, adapter->hw.perm_mac_addr); | |
43250ddd JY |
2688 | atl1c_phy_disable(&adapter->hw); |
2689 | ||
2690 | iounmap(adapter->hw.hw_addr); | |
2691 | ||
2692 | pci_release_regions(pdev); | |
2693 | pci_disable_device(pdev); | |
2694 | free_netdev(netdev); | |
2695 | } | |
2696 | ||
49ce9c2c | 2697 | /** |
43250ddd JY |
2698 | * atl1c_io_error_detected - called when PCI error is detected |
2699 | * @pdev: Pointer to PCI device | |
2700 | * @state: The current pci connection state | |
2701 | * | |
2702 | * This function is called after a PCI bus error affecting | |
2703 | * this device has been detected. | |
2704 | */ | |
2705 | static pci_ers_result_t atl1c_io_error_detected(struct pci_dev *pdev, | |
2706 | pci_channel_state_t state) | |
2707 | { | |
2708 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2709 | struct atl1c_adapter *adapter = netdev_priv(netdev); | |
2710 | ||
2711 | netif_device_detach(netdev); | |
2712 | ||
005fb4f0 DN |
2713 | if (state == pci_channel_io_perm_failure) |
2714 | return PCI_ERS_RESULT_DISCONNECT; | |
2715 | ||
43250ddd JY |
2716 | if (netif_running(netdev)) |
2717 | atl1c_down(adapter); | |
2718 | ||
2719 | pci_disable_device(pdev); | |
2720 | ||
2721 | /* Request a slot slot reset. */ | |
2722 | return PCI_ERS_RESULT_NEED_RESET; | |
2723 | } | |
2724 | ||
49ce9c2c | 2725 | /** |
43250ddd JY |
2726 | * atl1c_io_slot_reset - called after the pci bus has been reset. |
2727 | * @pdev: Pointer to PCI device | |
2728 | * | |
2729 | * Restart the card from scratch, as if from a cold-boot. Implementation | |
2730 | * resembles the first-half of the e1000_resume routine. | |
2731 | */ | |
2732 | static pci_ers_result_t atl1c_io_slot_reset(struct pci_dev *pdev) | |
2733 | { | |
2734 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2735 | struct atl1c_adapter *adapter = netdev_priv(netdev); | |
2736 | ||
2737 | if (pci_enable_device(pdev)) { | |
2738 | if (netif_msg_hw(adapter)) | |
2739 | dev_err(&pdev->dev, | |
2740 | "Cannot re-enable PCI device after reset\n"); | |
2741 | return PCI_ERS_RESULT_DISCONNECT; | |
2742 | } | |
2743 | pci_set_master(pdev); | |
2744 | ||
2745 | pci_enable_wake(pdev, PCI_D3hot, 0); | |
2746 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
2747 | ||
2748 | atl1c_reset_mac(&adapter->hw); | |
2749 | ||
2750 | return PCI_ERS_RESULT_RECOVERED; | |
2751 | } | |
2752 | ||
49ce9c2c | 2753 | /** |
43250ddd JY |
2754 | * atl1c_io_resume - called when traffic can start flowing again. |
2755 | * @pdev: Pointer to PCI device | |
2756 | * | |
2757 | * This callback is called when the error recovery driver tells us that | |
2758 | * its OK to resume normal operation. Implementation resembles the | |
2759 | * second-half of the atl1c_resume routine. | |
2760 | */ | |
2761 | static void atl1c_io_resume(struct pci_dev *pdev) | |
2762 | { | |
2763 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2764 | struct atl1c_adapter *adapter = netdev_priv(netdev); | |
2765 | ||
2766 | if (netif_running(netdev)) { | |
2767 | if (atl1c_up(adapter)) { | |
2768 | if (netif_msg_hw(adapter)) | |
2769 | dev_err(&pdev->dev, | |
2770 | "Cannot bring device back up after reset\n"); | |
2771 | return; | |
2772 | } | |
2773 | } | |
2774 | ||
2775 | netif_device_attach(netdev); | |
2776 | } | |
2777 | ||
3646f0e5 | 2778 | static const struct pci_error_handlers atl1c_err_handler = { |
43250ddd JY |
2779 | .error_detected = atl1c_io_error_detected, |
2780 | .slot_reset = atl1c_io_slot_reset, | |
2781 | .resume = atl1c_io_resume, | |
2782 | }; | |
2783 | ||
762e3023 RW |
2784 | static SIMPLE_DEV_PM_OPS(atl1c_pm_ops, atl1c_suspend, atl1c_resume); |
2785 | ||
43250ddd JY |
2786 | static struct pci_driver atl1c_driver = { |
2787 | .name = atl1c_driver_name, | |
2788 | .id_table = atl1c_pci_tbl, | |
2789 | .probe = atl1c_probe, | |
093d369d | 2790 | .remove = atl1c_remove, |
43250ddd | 2791 | .shutdown = atl1c_shutdown, |
762e3023 RW |
2792 | .err_handler = &atl1c_err_handler, |
2793 | .driver.pm = &atl1c_pm_ops, | |
43250ddd JY |
2794 | }; |
2795 | ||
2c21d6c9 | 2796 | module_pci_driver(atl1c_driver); |