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77555ee7 MO |
1 | /* |
2 | * Copyright (C) 1999 - 2010 Intel Corporation. | |
3 | * Copyright (C) 2010 OKI SEMICONDUCTOR Co., LTD. | |
4 | * | |
5 | * This code was derived from the Intel e1000e Linux driver. | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; version 2 of the License. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. | |
19 | */ | |
20 | ||
21 | #include "pch_gbe.h" | |
22 | #include "pch_gbe_api.h" | |
23 | ||
24 | #define DRV_VERSION "1.00" | |
25 | const char pch_driver_version[] = DRV_VERSION; | |
26 | ||
27 | #define PCI_DEVICE_ID_INTEL_IOH1_GBE 0x8802 /* Pci device ID */ | |
28 | #define PCH_GBE_MAR_ENTRIES 16 | |
29 | #define PCH_GBE_SHORT_PKT 64 | |
30 | #define DSC_INIT16 0xC000 | |
31 | #define PCH_GBE_DMA_ALIGN 0 | |
32 | #define PCH_GBE_WATCHDOG_PERIOD (1 * HZ) /* watchdog time */ | |
33 | #define PCH_GBE_COPYBREAK_DEFAULT 256 | |
34 | #define PCH_GBE_PCI_BAR 1 | |
35 | ||
36 | #define PCH_GBE_TX_WEIGHT 64 | |
37 | #define PCH_GBE_RX_WEIGHT 64 | |
38 | #define PCH_GBE_RX_BUFFER_WRITE 16 | |
39 | ||
40 | /* Initialize the wake-on-LAN settings */ | |
41 | #define PCH_GBE_WL_INIT_SETTING (PCH_GBE_WLC_MP) | |
42 | ||
43 | #define PCH_GBE_MAC_RGMII_CTRL_SETTING ( \ | |
44 | PCH_GBE_CHIP_TYPE_INTERNAL | \ | |
45 | PCH_GBE_RGMII_MODE_RGMII | \ | |
46 | PCH_GBE_CRS_SEL \ | |
47 | ) | |
48 | ||
49 | /* Ethertype field values */ | |
50 | #define PCH_GBE_MAX_JUMBO_FRAME_SIZE 10318 | |
51 | #define PCH_GBE_FRAME_SIZE_2048 2048 | |
52 | #define PCH_GBE_FRAME_SIZE_4096 4096 | |
53 | #define PCH_GBE_FRAME_SIZE_8192 8192 | |
54 | ||
55 | #define PCH_GBE_GET_DESC(R, i, type) (&(((struct type *)((R).desc))[i])) | |
56 | #define PCH_GBE_RX_DESC(R, i) PCH_GBE_GET_DESC(R, i, pch_gbe_rx_desc) | |
57 | #define PCH_GBE_TX_DESC(R, i) PCH_GBE_GET_DESC(R, i, pch_gbe_tx_desc) | |
58 | #define PCH_GBE_DESC_UNUSED(R) \ | |
59 | ((((R)->next_to_clean > (R)->next_to_use) ? 0 : (R)->count) + \ | |
60 | (R)->next_to_clean - (R)->next_to_use - 1) | |
61 | ||
62 | /* Pause packet value */ | |
63 | #define PCH_GBE_PAUSE_PKT1_VALUE 0x00C28001 | |
64 | #define PCH_GBE_PAUSE_PKT2_VALUE 0x00000100 | |
65 | #define PCH_GBE_PAUSE_PKT4_VALUE 0x01000888 | |
66 | #define PCH_GBE_PAUSE_PKT5_VALUE 0x0000FFFF | |
67 | ||
68 | #define PCH_GBE_ETH_ALEN 6 | |
69 | ||
70 | /* This defines the bits that are set in the Interrupt Mask | |
71 | * Set/Read Register. Each bit is documented below: | |
72 | * o RXT0 = Receiver Timer Interrupt (ring 0) | |
73 | * o TXDW = Transmit Descriptor Written Back | |
74 | * o RXDMT0 = Receive Descriptor Minimum Threshold hit (ring 0) | |
75 | * o RXSEQ = Receive Sequence Error | |
76 | * o LSC = Link Status Change | |
77 | */ | |
78 | #define PCH_GBE_INT_ENABLE_MASK ( \ | |
79 | PCH_GBE_INT_RX_DMA_CMPLT | \ | |
80 | PCH_GBE_INT_RX_DSC_EMP | \ | |
81 | PCH_GBE_INT_WOL_DET | \ | |
82 | PCH_GBE_INT_TX_CMPLT \ | |
83 | ) | |
84 | ||
85 | ||
86 | static unsigned int copybreak __read_mostly = PCH_GBE_COPYBREAK_DEFAULT; | |
87 | ||
191cc687 | 88 | static int pch_gbe_mdio_read(struct net_device *netdev, int addr, int reg); |
89 | static void pch_gbe_mdio_write(struct net_device *netdev, int addr, int reg, | |
90 | int data); | |
77555ee7 MO |
91 | /** |
92 | * pch_gbe_mac_read_mac_addr - Read MAC address | |
93 | * @hw: Pointer to the HW structure | |
94 | * Returns | |
95 | * 0: Successful. | |
96 | */ | |
97 | s32 pch_gbe_mac_read_mac_addr(struct pch_gbe_hw *hw) | |
98 | { | |
99 | u32 adr1a, adr1b; | |
100 | ||
101 | adr1a = ioread32(&hw->reg->mac_adr[0].high); | |
102 | adr1b = ioread32(&hw->reg->mac_adr[0].low); | |
103 | ||
104 | hw->mac.addr[0] = (u8)(adr1a & 0xFF); | |
105 | hw->mac.addr[1] = (u8)((adr1a >> 8) & 0xFF); | |
106 | hw->mac.addr[2] = (u8)((adr1a >> 16) & 0xFF); | |
107 | hw->mac.addr[3] = (u8)((adr1a >> 24) & 0xFF); | |
108 | hw->mac.addr[4] = (u8)(adr1b & 0xFF); | |
109 | hw->mac.addr[5] = (u8)((adr1b >> 8) & 0xFF); | |
110 | ||
111 | pr_debug("hw->mac.addr : %pM\n", hw->mac.addr); | |
112 | return 0; | |
113 | } | |
114 | ||
115 | /** | |
116 | * pch_gbe_wait_clr_bit - Wait to clear a bit | |
117 | * @reg: Pointer of register | |
118 | * @busy: Busy bit | |
119 | */ | |
191cc687 | 120 | static void pch_gbe_wait_clr_bit(void *reg, u32 bit) |
77555ee7 MO |
121 | { |
122 | u32 tmp; | |
123 | /* wait busy */ | |
124 | tmp = 1000; | |
125 | while ((ioread32(reg) & bit) && --tmp) | |
126 | cpu_relax(); | |
127 | if (!tmp) | |
128 | pr_err("Error: busy bit is not cleared\n"); | |
129 | } | |
130 | /** | |
131 | * pch_gbe_mac_mar_set - Set MAC address register | |
132 | * @hw: Pointer to the HW structure | |
133 | * @addr: Pointer to the MAC address | |
134 | * @index: MAC address array register | |
135 | */ | |
191cc687 | 136 | static void pch_gbe_mac_mar_set(struct pch_gbe_hw *hw, u8 * addr, u32 index) |
77555ee7 MO |
137 | { |
138 | u32 mar_low, mar_high, adrmask; | |
139 | ||
140 | pr_debug("index : 0x%x\n", index); | |
141 | ||
142 | /* | |
143 | * HW expects these in little endian so we reverse the byte order | |
144 | * from network order (big endian) to little endian | |
145 | */ | |
146 | mar_high = ((u32) addr[0] | ((u32) addr[1] << 8) | | |
147 | ((u32) addr[2] << 16) | ((u32) addr[3] << 24)); | |
148 | mar_low = ((u32) addr[4] | ((u32) addr[5] << 8)); | |
149 | /* Stop the MAC Address of index. */ | |
150 | adrmask = ioread32(&hw->reg->ADDR_MASK); | |
151 | iowrite32((adrmask | (0x0001 << index)), &hw->reg->ADDR_MASK); | |
152 | /* wait busy */ | |
153 | pch_gbe_wait_clr_bit(&hw->reg->ADDR_MASK, PCH_GBE_BUSY); | |
154 | /* Set the MAC address to the MAC address 1A/1B register */ | |
155 | iowrite32(mar_high, &hw->reg->mac_adr[index].high); | |
156 | iowrite32(mar_low, &hw->reg->mac_adr[index].low); | |
157 | /* Start the MAC address of index */ | |
158 | iowrite32((adrmask & ~(0x0001 << index)), &hw->reg->ADDR_MASK); | |
159 | /* wait busy */ | |
160 | pch_gbe_wait_clr_bit(&hw->reg->ADDR_MASK, PCH_GBE_BUSY); | |
161 | } | |
162 | ||
163 | /** | |
164 | * pch_gbe_mac_reset_hw - Reset hardware | |
165 | * @hw: Pointer to the HW structure | |
166 | */ | |
191cc687 | 167 | static void pch_gbe_mac_reset_hw(struct pch_gbe_hw *hw) |
77555ee7 MO |
168 | { |
169 | /* Read the MAC address. and store to the private data */ | |
170 | pch_gbe_mac_read_mac_addr(hw); | |
171 | iowrite32(PCH_GBE_ALL_RST, &hw->reg->RESET); | |
172 | #ifdef PCH_GBE_MAC_IFOP_RGMII | |
173 | iowrite32(PCH_GBE_MODE_GMII_ETHER, &hw->reg->MODE); | |
174 | #endif | |
175 | pch_gbe_wait_clr_bit(&hw->reg->RESET, PCH_GBE_ALL_RST); | |
176 | /* Setup the receive address */ | |
177 | pch_gbe_mac_mar_set(hw, hw->mac.addr, 0); | |
178 | return; | |
179 | } | |
180 | ||
181 | /** | |
182 | * pch_gbe_mac_init_rx_addrs - Initialize receive address's | |
183 | * @hw: Pointer to the HW structure | |
184 | * @mar_count: Receive address registers | |
185 | */ | |
191cc687 | 186 | static void pch_gbe_mac_init_rx_addrs(struct pch_gbe_hw *hw, u16 mar_count) |
77555ee7 MO |
187 | { |
188 | u32 i; | |
189 | ||
190 | /* Setup the receive address */ | |
191 | pch_gbe_mac_mar_set(hw, hw->mac.addr, 0); | |
192 | ||
193 | /* Zero out the other receive addresses */ | |
194 | for (i = 1; i < mar_count; i++) { | |
195 | iowrite32(0, &hw->reg->mac_adr[i].high); | |
196 | iowrite32(0, &hw->reg->mac_adr[i].low); | |
197 | } | |
198 | iowrite32(0xFFFE, &hw->reg->ADDR_MASK); | |
199 | /* wait busy */ | |
200 | pch_gbe_wait_clr_bit(&hw->reg->ADDR_MASK, PCH_GBE_BUSY); | |
201 | } | |
202 | ||
203 | ||
204 | /** | |
205 | * pch_gbe_mac_mc_addr_list_update - Update Multicast addresses | |
206 | * @hw: Pointer to the HW structure | |
207 | * @mc_addr_list: Array of multicast addresses to program | |
208 | * @mc_addr_count: Number of multicast addresses to program | |
209 | * @mar_used_count: The first MAC Address register free to program | |
210 | * @mar_total_num: Total number of supported MAC Address Registers | |
211 | */ | |
191cc687 | 212 | static void pch_gbe_mac_mc_addr_list_update(struct pch_gbe_hw *hw, |
213 | u8 *mc_addr_list, u32 mc_addr_count, | |
214 | u32 mar_used_count, u32 mar_total_num) | |
77555ee7 MO |
215 | { |
216 | u32 i, adrmask; | |
217 | ||
218 | /* Load the first set of multicast addresses into the exact | |
219 | * filters (RAR). If there are not enough to fill the RAR | |
220 | * array, clear the filters. | |
221 | */ | |
222 | for (i = mar_used_count; i < mar_total_num; i++) { | |
223 | if (mc_addr_count) { | |
224 | pch_gbe_mac_mar_set(hw, mc_addr_list, i); | |
225 | mc_addr_count--; | |
226 | mc_addr_list += PCH_GBE_ETH_ALEN; | |
227 | } else { | |
228 | /* Clear MAC address mask */ | |
229 | adrmask = ioread32(&hw->reg->ADDR_MASK); | |
230 | iowrite32((adrmask | (0x0001 << i)), | |
231 | &hw->reg->ADDR_MASK); | |
232 | /* wait busy */ | |
233 | pch_gbe_wait_clr_bit(&hw->reg->ADDR_MASK, PCH_GBE_BUSY); | |
234 | /* Clear MAC address */ | |
235 | iowrite32(0, &hw->reg->mac_adr[i].high); | |
236 | iowrite32(0, &hw->reg->mac_adr[i].low); | |
237 | } | |
238 | } | |
239 | } | |
240 | ||
241 | /** | |
242 | * pch_gbe_mac_force_mac_fc - Force the MAC's flow control settings | |
243 | * @hw: Pointer to the HW structure | |
244 | * Returns | |
245 | * 0: Successful. | |
246 | * Negative value: Failed. | |
247 | */ | |
248 | s32 pch_gbe_mac_force_mac_fc(struct pch_gbe_hw *hw) | |
249 | { | |
250 | struct pch_gbe_mac_info *mac = &hw->mac; | |
251 | u32 rx_fctrl; | |
252 | ||
253 | pr_debug("mac->fc = %u\n", mac->fc); | |
254 | ||
255 | rx_fctrl = ioread32(&hw->reg->RX_FCTRL); | |
256 | ||
257 | switch (mac->fc) { | |
258 | case PCH_GBE_FC_NONE: | |
259 | rx_fctrl &= ~PCH_GBE_FL_CTRL_EN; | |
260 | mac->tx_fc_enable = false; | |
261 | break; | |
262 | case PCH_GBE_FC_RX_PAUSE: | |
263 | rx_fctrl |= PCH_GBE_FL_CTRL_EN; | |
264 | mac->tx_fc_enable = false; | |
265 | break; | |
266 | case PCH_GBE_FC_TX_PAUSE: | |
267 | rx_fctrl &= ~PCH_GBE_FL_CTRL_EN; | |
268 | mac->tx_fc_enable = true; | |
269 | break; | |
270 | case PCH_GBE_FC_FULL: | |
271 | rx_fctrl |= PCH_GBE_FL_CTRL_EN; | |
272 | mac->tx_fc_enable = true; | |
273 | break; | |
274 | default: | |
275 | pr_err("Flow control param set incorrectly\n"); | |
276 | return -EINVAL; | |
277 | } | |
278 | if (mac->link_duplex == DUPLEX_HALF) | |
279 | rx_fctrl &= ~PCH_GBE_FL_CTRL_EN; | |
280 | iowrite32(rx_fctrl, &hw->reg->RX_FCTRL); | |
281 | pr_debug("RX_FCTRL reg : 0x%08x mac->tx_fc_enable : %d\n", | |
282 | ioread32(&hw->reg->RX_FCTRL), mac->tx_fc_enable); | |
283 | return 0; | |
284 | } | |
285 | ||
286 | /** | |
287 | * pch_gbe_mac_set_wol_event - Set wake-on-lan event | |
288 | * @hw: Pointer to the HW structure | |
289 | * @wu_evt: Wake up event | |
290 | */ | |
191cc687 | 291 | static void pch_gbe_mac_set_wol_event(struct pch_gbe_hw *hw, u32 wu_evt) |
77555ee7 MO |
292 | { |
293 | u32 addr_mask; | |
294 | ||
295 | pr_debug("wu_evt : 0x%08x ADDR_MASK reg : 0x%08x\n", | |
296 | wu_evt, ioread32(&hw->reg->ADDR_MASK)); | |
297 | ||
298 | if (wu_evt) { | |
299 | /* Set Wake-On-Lan address mask */ | |
300 | addr_mask = ioread32(&hw->reg->ADDR_MASK); | |
301 | iowrite32(addr_mask, &hw->reg->WOL_ADDR_MASK); | |
302 | /* wait busy */ | |
303 | pch_gbe_wait_clr_bit(&hw->reg->WOL_ADDR_MASK, PCH_GBE_WLA_BUSY); | |
304 | iowrite32(0, &hw->reg->WOL_ST); | |
305 | iowrite32((wu_evt | PCH_GBE_WLC_WOL_MODE), &hw->reg->WOL_CTRL); | |
306 | iowrite32(0x02, &hw->reg->TCPIP_ACC); | |
307 | iowrite32(PCH_GBE_INT_ENABLE_MASK, &hw->reg->INT_EN); | |
308 | } else { | |
309 | iowrite32(0, &hw->reg->WOL_CTRL); | |
310 | iowrite32(0, &hw->reg->WOL_ST); | |
311 | } | |
312 | return; | |
313 | } | |
314 | ||
315 | /** | |
316 | * pch_gbe_mac_ctrl_miim - Control MIIM interface | |
317 | * @hw: Pointer to the HW structure | |
318 | * @addr: Address of PHY | |
319 | * @dir: Operetion. (Write or Read) | |
320 | * @reg: Access register of PHY | |
321 | * @data: Write data. | |
322 | * | |
323 | * Returns: Read date. | |
324 | */ | |
325 | u16 pch_gbe_mac_ctrl_miim(struct pch_gbe_hw *hw, u32 addr, u32 dir, u32 reg, | |
326 | u16 data) | |
327 | { | |
328 | u32 data_out = 0; | |
329 | unsigned int i; | |
330 | unsigned long flags; | |
331 | ||
332 | spin_lock_irqsave(&hw->miim_lock, flags); | |
333 | ||
334 | for (i = 100; i; --i) { | |
335 | if ((ioread32(&hw->reg->MIIM) & PCH_GBE_MIIM_OPER_READY)) | |
336 | break; | |
337 | udelay(20); | |
338 | } | |
339 | if (i == 0) { | |
340 | pr_err("pch-gbe.miim won't go Ready\n"); | |
341 | spin_unlock_irqrestore(&hw->miim_lock, flags); | |
342 | return 0; /* No way to indicate timeout error */ | |
343 | } | |
344 | iowrite32(((reg << PCH_GBE_MIIM_REG_ADDR_SHIFT) | | |
345 | (addr << PCH_GBE_MIIM_PHY_ADDR_SHIFT) | | |
346 | dir | data), &hw->reg->MIIM); | |
347 | for (i = 0; i < 100; i++) { | |
348 | udelay(20); | |
349 | data_out = ioread32(&hw->reg->MIIM); | |
350 | if ((data_out & PCH_GBE_MIIM_OPER_READY)) | |
351 | break; | |
352 | } | |
353 | spin_unlock_irqrestore(&hw->miim_lock, flags); | |
354 | ||
355 | pr_debug("PHY %s: reg=%d, data=0x%04X\n", | |
356 | dir == PCH_GBE_MIIM_OPER_READ ? "READ" : "WRITE", reg, | |
357 | dir == PCH_GBE_MIIM_OPER_READ ? data_out : data); | |
358 | return (u16) data_out; | |
359 | } | |
360 | ||
361 | /** | |
362 | * pch_gbe_mac_set_pause_packet - Set pause packet | |
363 | * @hw: Pointer to the HW structure | |
364 | */ | |
191cc687 | 365 | static void pch_gbe_mac_set_pause_packet(struct pch_gbe_hw *hw) |
77555ee7 MO |
366 | { |
367 | unsigned long tmp2, tmp3; | |
368 | ||
369 | /* Set Pause packet */ | |
370 | tmp2 = hw->mac.addr[1]; | |
371 | tmp2 = (tmp2 << 8) | hw->mac.addr[0]; | |
372 | tmp2 = PCH_GBE_PAUSE_PKT2_VALUE | (tmp2 << 16); | |
373 | ||
374 | tmp3 = hw->mac.addr[5]; | |
375 | tmp3 = (tmp3 << 8) | hw->mac.addr[4]; | |
376 | tmp3 = (tmp3 << 8) | hw->mac.addr[3]; | |
377 | tmp3 = (tmp3 << 8) | hw->mac.addr[2]; | |
378 | ||
379 | iowrite32(PCH_GBE_PAUSE_PKT1_VALUE, &hw->reg->PAUSE_PKT1); | |
380 | iowrite32(tmp2, &hw->reg->PAUSE_PKT2); | |
381 | iowrite32(tmp3, &hw->reg->PAUSE_PKT3); | |
382 | iowrite32(PCH_GBE_PAUSE_PKT4_VALUE, &hw->reg->PAUSE_PKT4); | |
383 | iowrite32(PCH_GBE_PAUSE_PKT5_VALUE, &hw->reg->PAUSE_PKT5); | |
384 | ||
385 | /* Transmit Pause Packet */ | |
386 | iowrite32(PCH_GBE_PS_PKT_RQ, &hw->reg->PAUSE_REQ); | |
387 | ||
388 | pr_debug("PAUSE_PKT1-5 reg : 0x%08x 0x%08x 0x%08x 0x%08x 0x%08x\n", | |
389 | ioread32(&hw->reg->PAUSE_PKT1), ioread32(&hw->reg->PAUSE_PKT2), | |
390 | ioread32(&hw->reg->PAUSE_PKT3), ioread32(&hw->reg->PAUSE_PKT4), | |
391 | ioread32(&hw->reg->PAUSE_PKT5)); | |
392 | ||
393 | return; | |
394 | } | |
395 | ||
396 | ||
397 | /** | |
398 | * pch_gbe_alloc_queues - Allocate memory for all rings | |
399 | * @adapter: Board private structure to initialize | |
400 | * Returns | |
401 | * 0: Successfully | |
402 | * Negative value: Failed | |
403 | */ | |
404 | static int pch_gbe_alloc_queues(struct pch_gbe_adapter *adapter) | |
405 | { | |
406 | int size; | |
407 | ||
408 | size = (int)sizeof(struct pch_gbe_tx_ring); | |
409 | adapter->tx_ring = kzalloc(size, GFP_KERNEL); | |
410 | if (!adapter->tx_ring) | |
411 | return -ENOMEM; | |
412 | size = (int)sizeof(struct pch_gbe_rx_ring); | |
413 | adapter->rx_ring = kzalloc(size, GFP_KERNEL); | |
414 | if (!adapter->rx_ring) { | |
415 | kfree(adapter->tx_ring); | |
416 | return -ENOMEM; | |
417 | } | |
418 | return 0; | |
419 | } | |
420 | ||
421 | /** | |
422 | * pch_gbe_init_stats - Initialize status | |
423 | * @adapter: Board private structure to initialize | |
424 | */ | |
425 | static void pch_gbe_init_stats(struct pch_gbe_adapter *adapter) | |
426 | { | |
427 | memset(&adapter->stats, 0, sizeof(adapter->stats)); | |
428 | return; | |
429 | } | |
430 | ||
431 | /** | |
432 | * pch_gbe_init_phy - Initialize PHY | |
433 | * @adapter: Board private structure to initialize | |
434 | * Returns | |
435 | * 0: Successfully | |
436 | * Negative value: Failed | |
437 | */ | |
438 | static int pch_gbe_init_phy(struct pch_gbe_adapter *adapter) | |
439 | { | |
440 | struct net_device *netdev = adapter->netdev; | |
441 | u32 addr; | |
442 | u16 bmcr, stat; | |
443 | ||
444 | /* Discover phy addr by searching addrs in order {1,0,2,..., 31} */ | |
445 | for (addr = 0; addr < PCH_GBE_PHY_REGS_LEN; addr++) { | |
446 | adapter->mii.phy_id = (addr == 0) ? 1 : (addr == 1) ? 0 : addr; | |
447 | bmcr = pch_gbe_mdio_read(netdev, adapter->mii.phy_id, MII_BMCR); | |
448 | stat = pch_gbe_mdio_read(netdev, adapter->mii.phy_id, MII_BMSR); | |
449 | stat = pch_gbe_mdio_read(netdev, adapter->mii.phy_id, MII_BMSR); | |
450 | if (!((bmcr == 0xFFFF) || ((stat == 0) && (bmcr == 0)))) | |
451 | break; | |
452 | } | |
453 | adapter->hw.phy.addr = adapter->mii.phy_id; | |
454 | pr_debug("phy_addr = %d\n", adapter->mii.phy_id); | |
455 | if (addr == 32) | |
456 | return -EAGAIN; | |
457 | /* Selected the phy and isolate the rest */ | |
458 | for (addr = 0; addr < PCH_GBE_PHY_REGS_LEN; addr++) { | |
459 | if (addr != adapter->mii.phy_id) { | |
460 | pch_gbe_mdio_write(netdev, addr, MII_BMCR, | |
461 | BMCR_ISOLATE); | |
462 | } else { | |
463 | bmcr = pch_gbe_mdio_read(netdev, addr, MII_BMCR); | |
464 | pch_gbe_mdio_write(netdev, addr, MII_BMCR, | |
465 | bmcr & ~BMCR_ISOLATE); | |
466 | } | |
467 | } | |
468 | ||
469 | /* MII setup */ | |
470 | adapter->mii.phy_id_mask = 0x1F; | |
471 | adapter->mii.reg_num_mask = 0x1F; | |
472 | adapter->mii.dev = adapter->netdev; | |
473 | adapter->mii.mdio_read = pch_gbe_mdio_read; | |
474 | adapter->mii.mdio_write = pch_gbe_mdio_write; | |
475 | adapter->mii.supports_gmii = mii_check_gmii_support(&adapter->mii); | |
476 | return 0; | |
477 | } | |
478 | ||
479 | /** | |
480 | * pch_gbe_mdio_read - The read function for mii | |
481 | * @netdev: Network interface device structure | |
482 | * @addr: Phy ID | |
483 | * @reg: Access location | |
484 | * Returns | |
485 | * 0: Successfully | |
486 | * Negative value: Failed | |
487 | */ | |
191cc687 | 488 | static int pch_gbe_mdio_read(struct net_device *netdev, int addr, int reg) |
77555ee7 MO |
489 | { |
490 | struct pch_gbe_adapter *adapter = netdev_priv(netdev); | |
491 | struct pch_gbe_hw *hw = &adapter->hw; | |
492 | ||
493 | return pch_gbe_mac_ctrl_miim(hw, addr, PCH_GBE_HAL_MIIM_READ, reg, | |
494 | (u16) 0); | |
495 | } | |
496 | ||
497 | /** | |
498 | * pch_gbe_mdio_write - The write function for mii | |
499 | * @netdev: Network interface device structure | |
500 | * @addr: Phy ID (not used) | |
501 | * @reg: Access location | |
502 | * @data: Write data | |
503 | */ | |
191cc687 | 504 | static void pch_gbe_mdio_write(struct net_device *netdev, |
505 | int addr, int reg, int data) | |
77555ee7 MO |
506 | { |
507 | struct pch_gbe_adapter *adapter = netdev_priv(netdev); | |
508 | struct pch_gbe_hw *hw = &adapter->hw; | |
509 | ||
510 | pch_gbe_mac_ctrl_miim(hw, addr, PCH_GBE_HAL_MIIM_WRITE, reg, data); | |
511 | } | |
512 | ||
513 | /** | |
514 | * pch_gbe_reset_task - Reset processing at the time of transmission timeout | |
515 | * @work: Pointer of board private structure | |
516 | */ | |
517 | static void pch_gbe_reset_task(struct work_struct *work) | |
518 | { | |
519 | struct pch_gbe_adapter *adapter; | |
520 | adapter = container_of(work, struct pch_gbe_adapter, reset_task); | |
521 | ||
522 | pch_gbe_reinit_locked(adapter); | |
523 | } | |
524 | ||
525 | /** | |
526 | * pch_gbe_reinit_locked- Re-initialization | |
527 | * @adapter: Board private structure | |
528 | */ | |
529 | void pch_gbe_reinit_locked(struct pch_gbe_adapter *adapter) | |
530 | { | |
531 | struct net_device *netdev = adapter->netdev; | |
532 | ||
533 | rtnl_lock(); | |
534 | if (netif_running(netdev)) { | |
535 | pch_gbe_down(adapter); | |
536 | pch_gbe_up(adapter); | |
537 | } | |
538 | rtnl_unlock(); | |
539 | } | |
540 | ||
541 | /** | |
542 | * pch_gbe_reset - Reset GbE | |
543 | * @adapter: Board private structure | |
544 | */ | |
545 | void pch_gbe_reset(struct pch_gbe_adapter *adapter) | |
546 | { | |
547 | pch_gbe_mac_reset_hw(&adapter->hw); | |
548 | /* Setup the receive address. */ | |
549 | pch_gbe_mac_init_rx_addrs(&adapter->hw, PCH_GBE_MAR_ENTRIES); | |
550 | if (pch_gbe_hal_init_hw(&adapter->hw)) | |
551 | pr_err("Hardware Error\n"); | |
552 | } | |
553 | ||
554 | /** | |
555 | * pch_gbe_free_irq - Free an interrupt | |
556 | * @adapter: Board private structure | |
557 | */ | |
558 | static void pch_gbe_free_irq(struct pch_gbe_adapter *adapter) | |
559 | { | |
560 | struct net_device *netdev = adapter->netdev; | |
561 | ||
562 | free_irq(adapter->pdev->irq, netdev); | |
563 | if (adapter->have_msi) { | |
564 | pci_disable_msi(adapter->pdev); | |
565 | pr_debug("call pci_disable_msi\n"); | |
566 | } | |
567 | } | |
568 | ||
569 | /** | |
570 | * pch_gbe_irq_disable - Mask off interrupt generation on the NIC | |
571 | * @adapter: Board private structure | |
572 | */ | |
573 | static void pch_gbe_irq_disable(struct pch_gbe_adapter *adapter) | |
574 | { | |
575 | struct pch_gbe_hw *hw = &adapter->hw; | |
576 | ||
577 | atomic_inc(&adapter->irq_sem); | |
578 | iowrite32(0, &hw->reg->INT_EN); | |
579 | ioread32(&hw->reg->INT_ST); | |
580 | synchronize_irq(adapter->pdev->irq); | |
581 | ||
582 | pr_debug("INT_EN reg : 0x%08x\n", ioread32(&hw->reg->INT_EN)); | |
583 | } | |
584 | ||
585 | /** | |
586 | * pch_gbe_irq_enable - Enable default interrupt generation settings | |
587 | * @adapter: Board private structure | |
588 | */ | |
589 | static void pch_gbe_irq_enable(struct pch_gbe_adapter *adapter) | |
590 | { | |
591 | struct pch_gbe_hw *hw = &adapter->hw; | |
592 | ||
593 | if (likely(atomic_dec_and_test(&adapter->irq_sem))) | |
594 | iowrite32(PCH_GBE_INT_ENABLE_MASK, &hw->reg->INT_EN); | |
595 | ioread32(&hw->reg->INT_ST); | |
596 | pr_debug("INT_EN reg : 0x%08x\n", ioread32(&hw->reg->INT_EN)); | |
597 | } | |
598 | ||
599 | ||
600 | ||
601 | /** | |
602 | * pch_gbe_setup_tctl - configure the Transmit control registers | |
603 | * @adapter: Board private structure | |
604 | */ | |
605 | static void pch_gbe_setup_tctl(struct pch_gbe_adapter *adapter) | |
606 | { | |
607 | struct pch_gbe_hw *hw = &adapter->hw; | |
608 | u32 tx_mode, tcpip; | |
609 | ||
610 | tx_mode = PCH_GBE_TM_LONG_PKT | | |
611 | PCH_GBE_TM_ST_AND_FD | | |
612 | PCH_GBE_TM_SHORT_PKT | | |
613 | PCH_GBE_TM_TH_TX_STRT_8 | | |
614 | PCH_GBE_TM_TH_ALM_EMP_4 | PCH_GBE_TM_TH_ALM_FULL_8; | |
615 | ||
616 | iowrite32(tx_mode, &hw->reg->TX_MODE); | |
617 | ||
618 | tcpip = ioread32(&hw->reg->TCPIP_ACC); | |
619 | tcpip |= PCH_GBE_TX_TCPIPACC_EN; | |
620 | iowrite32(tcpip, &hw->reg->TCPIP_ACC); | |
621 | return; | |
622 | } | |
623 | ||
624 | /** | |
625 | * pch_gbe_configure_tx - Configure Transmit Unit after Reset | |
626 | * @adapter: Board private structure | |
627 | */ | |
628 | static void pch_gbe_configure_tx(struct pch_gbe_adapter *adapter) | |
629 | { | |
630 | struct pch_gbe_hw *hw = &adapter->hw; | |
631 | u32 tdba, tdlen, dctrl; | |
632 | ||
633 | pr_debug("dma addr = 0x%08llx size = 0x%08x\n", | |
634 | (unsigned long long)adapter->tx_ring->dma, | |
635 | adapter->tx_ring->size); | |
636 | ||
637 | /* Setup the HW Tx Head and Tail descriptor pointers */ | |
638 | tdba = adapter->tx_ring->dma; | |
639 | tdlen = adapter->tx_ring->size - 0x10; | |
640 | iowrite32(tdba, &hw->reg->TX_DSC_BASE); | |
641 | iowrite32(tdlen, &hw->reg->TX_DSC_SIZE); | |
642 | iowrite32(tdba, &hw->reg->TX_DSC_SW_P); | |
643 | ||
644 | /* Enables Transmission DMA */ | |
645 | dctrl = ioread32(&hw->reg->DMA_CTRL); | |
646 | dctrl |= PCH_GBE_TX_DMA_EN; | |
647 | iowrite32(dctrl, &hw->reg->DMA_CTRL); | |
648 | } | |
649 | ||
650 | /** | |
651 | * pch_gbe_setup_rctl - Configure the receive control registers | |
652 | * @adapter: Board private structure | |
653 | */ | |
654 | static void pch_gbe_setup_rctl(struct pch_gbe_adapter *adapter) | |
655 | { | |
656 | struct pch_gbe_hw *hw = &adapter->hw; | |
657 | u32 rx_mode, tcpip; | |
658 | ||
659 | rx_mode = PCH_GBE_ADD_FIL_EN | PCH_GBE_MLT_FIL_EN | | |
660 | PCH_GBE_RH_ALM_EMP_4 | PCH_GBE_RH_ALM_FULL_4 | PCH_GBE_RH_RD_TRG_8; | |
661 | ||
662 | iowrite32(rx_mode, &hw->reg->RX_MODE); | |
663 | ||
664 | tcpip = ioread32(&hw->reg->TCPIP_ACC); | |
665 | ||
666 | if (adapter->rx_csum) { | |
667 | tcpip &= ~PCH_GBE_RX_TCPIPACC_OFF; | |
668 | tcpip |= PCH_GBE_RX_TCPIPACC_EN; | |
669 | } else { | |
670 | tcpip |= PCH_GBE_RX_TCPIPACC_OFF; | |
671 | tcpip &= ~PCH_GBE_RX_TCPIPACC_EN; | |
672 | } | |
673 | iowrite32(tcpip, &hw->reg->TCPIP_ACC); | |
674 | return; | |
675 | } | |
676 | ||
677 | /** | |
678 | * pch_gbe_configure_rx - Configure Receive Unit after Reset | |
679 | * @adapter: Board private structure | |
680 | */ | |
681 | static void pch_gbe_configure_rx(struct pch_gbe_adapter *adapter) | |
682 | { | |
683 | struct pch_gbe_hw *hw = &adapter->hw; | |
684 | u32 rdba, rdlen, rctl, rxdma; | |
685 | ||
686 | pr_debug("dma adr = 0x%08llx size = 0x%08x\n", | |
687 | (unsigned long long)adapter->rx_ring->dma, | |
688 | adapter->rx_ring->size); | |
689 | ||
690 | pch_gbe_mac_force_mac_fc(hw); | |
691 | ||
692 | /* Disables Receive MAC */ | |
693 | rctl = ioread32(&hw->reg->MAC_RX_EN); | |
694 | iowrite32((rctl & ~PCH_GBE_MRE_MAC_RX_EN), &hw->reg->MAC_RX_EN); | |
695 | ||
696 | /* Disables Receive DMA */ | |
697 | rxdma = ioread32(&hw->reg->DMA_CTRL); | |
698 | rxdma &= ~PCH_GBE_RX_DMA_EN; | |
699 | iowrite32(rxdma, &hw->reg->DMA_CTRL); | |
700 | ||
701 | pr_debug("MAC_RX_EN reg = 0x%08x DMA_CTRL reg = 0x%08x\n", | |
702 | ioread32(&hw->reg->MAC_RX_EN), | |
703 | ioread32(&hw->reg->DMA_CTRL)); | |
704 | ||
705 | /* Setup the HW Rx Head and Tail Descriptor Pointers and | |
706 | * the Base and Length of the Rx Descriptor Ring */ | |
707 | rdba = adapter->rx_ring->dma; | |
708 | rdlen = adapter->rx_ring->size - 0x10; | |
709 | iowrite32(rdba, &hw->reg->RX_DSC_BASE); | |
710 | iowrite32(rdlen, &hw->reg->RX_DSC_SIZE); | |
711 | iowrite32((rdba + rdlen), &hw->reg->RX_DSC_SW_P); | |
712 | ||
713 | /* Enables Receive DMA */ | |
714 | rxdma = ioread32(&hw->reg->DMA_CTRL); | |
715 | rxdma |= PCH_GBE_RX_DMA_EN; | |
716 | iowrite32(rxdma, &hw->reg->DMA_CTRL); | |
717 | /* Enables Receive */ | |
718 | iowrite32(PCH_GBE_MRE_MAC_RX_EN, &hw->reg->MAC_RX_EN); | |
719 | } | |
720 | ||
721 | /** | |
722 | * pch_gbe_unmap_and_free_tx_resource - Unmap and free tx socket buffer | |
723 | * @adapter: Board private structure | |
724 | * @buffer_info: Buffer information structure | |
725 | */ | |
726 | static void pch_gbe_unmap_and_free_tx_resource( | |
727 | struct pch_gbe_adapter *adapter, struct pch_gbe_buffer *buffer_info) | |
728 | { | |
729 | if (buffer_info->mapped) { | |
730 | dma_unmap_single(&adapter->pdev->dev, buffer_info->dma, | |
731 | buffer_info->length, DMA_TO_DEVICE); | |
732 | buffer_info->mapped = false; | |
733 | } | |
734 | if (buffer_info->skb) { | |
735 | dev_kfree_skb_any(buffer_info->skb); | |
736 | buffer_info->skb = NULL; | |
737 | } | |
738 | } | |
739 | ||
740 | /** | |
741 | * pch_gbe_unmap_and_free_rx_resource - Unmap and free rx socket buffer | |
742 | * @adapter: Board private structure | |
743 | * @buffer_info: Buffer information structure | |
744 | */ | |
745 | static void pch_gbe_unmap_and_free_rx_resource( | |
746 | struct pch_gbe_adapter *adapter, | |
747 | struct pch_gbe_buffer *buffer_info) | |
748 | { | |
749 | if (buffer_info->mapped) { | |
750 | dma_unmap_single(&adapter->pdev->dev, buffer_info->dma, | |
751 | buffer_info->length, DMA_FROM_DEVICE); | |
752 | buffer_info->mapped = false; | |
753 | } | |
754 | if (buffer_info->skb) { | |
755 | dev_kfree_skb_any(buffer_info->skb); | |
756 | buffer_info->skb = NULL; | |
757 | } | |
758 | } | |
759 | ||
760 | /** | |
761 | * pch_gbe_clean_tx_ring - Free Tx Buffers | |
762 | * @adapter: Board private structure | |
763 | * @tx_ring: Ring to be cleaned | |
764 | */ | |
765 | static void pch_gbe_clean_tx_ring(struct pch_gbe_adapter *adapter, | |
766 | struct pch_gbe_tx_ring *tx_ring) | |
767 | { | |
768 | struct pch_gbe_hw *hw = &adapter->hw; | |
769 | struct pch_gbe_buffer *buffer_info; | |
770 | unsigned long size; | |
771 | unsigned int i; | |
772 | ||
773 | /* Free all the Tx ring sk_buffs */ | |
774 | for (i = 0; i < tx_ring->count; i++) { | |
775 | buffer_info = &tx_ring->buffer_info[i]; | |
776 | pch_gbe_unmap_and_free_tx_resource(adapter, buffer_info); | |
777 | } | |
778 | pr_debug("call pch_gbe_unmap_and_free_tx_resource() %d count\n", i); | |
779 | ||
780 | size = (unsigned long)sizeof(struct pch_gbe_buffer) * tx_ring->count; | |
781 | memset(tx_ring->buffer_info, 0, size); | |
782 | ||
783 | /* Zero out the descriptor ring */ | |
784 | memset(tx_ring->desc, 0, tx_ring->size); | |
785 | tx_ring->next_to_use = 0; | |
786 | tx_ring->next_to_clean = 0; | |
787 | iowrite32(tx_ring->dma, &hw->reg->TX_DSC_HW_P); | |
788 | iowrite32((tx_ring->size - 0x10), &hw->reg->TX_DSC_SIZE); | |
789 | } | |
790 | ||
791 | /** | |
792 | * pch_gbe_clean_rx_ring - Free Rx Buffers | |
793 | * @adapter: Board private structure | |
794 | * @rx_ring: Ring to free buffers from | |
795 | */ | |
796 | static void | |
797 | pch_gbe_clean_rx_ring(struct pch_gbe_adapter *adapter, | |
798 | struct pch_gbe_rx_ring *rx_ring) | |
799 | { | |
800 | struct pch_gbe_hw *hw = &adapter->hw; | |
801 | struct pch_gbe_buffer *buffer_info; | |
802 | unsigned long size; | |
803 | unsigned int i; | |
804 | ||
805 | /* Free all the Rx ring sk_buffs */ | |
806 | for (i = 0; i < rx_ring->count; i++) { | |
807 | buffer_info = &rx_ring->buffer_info[i]; | |
808 | pch_gbe_unmap_and_free_rx_resource(adapter, buffer_info); | |
809 | } | |
810 | pr_debug("call pch_gbe_unmap_and_free_rx_resource() %d count\n", i); | |
811 | size = (unsigned long)sizeof(struct pch_gbe_buffer) * rx_ring->count; | |
812 | memset(rx_ring->buffer_info, 0, size); | |
813 | ||
814 | /* Zero out the descriptor ring */ | |
815 | memset(rx_ring->desc, 0, rx_ring->size); | |
816 | rx_ring->next_to_clean = 0; | |
817 | rx_ring->next_to_use = 0; | |
818 | iowrite32(rx_ring->dma, &hw->reg->RX_DSC_HW_P); | |
819 | iowrite32((rx_ring->size - 0x10), &hw->reg->RX_DSC_SIZE); | |
820 | } | |
821 | ||
822 | static void pch_gbe_set_rgmii_ctrl(struct pch_gbe_adapter *adapter, u16 speed, | |
823 | u16 duplex) | |
824 | { | |
825 | struct pch_gbe_hw *hw = &adapter->hw; | |
826 | unsigned long rgmii = 0; | |
827 | ||
828 | /* Set the RGMII control. */ | |
829 | #ifdef PCH_GBE_MAC_IFOP_RGMII | |
830 | switch (speed) { | |
831 | case SPEED_10: | |
832 | rgmii = (PCH_GBE_RGMII_RATE_2_5M | | |
833 | PCH_GBE_MAC_RGMII_CTRL_SETTING); | |
834 | break; | |
835 | case SPEED_100: | |
836 | rgmii = (PCH_GBE_RGMII_RATE_25M | | |
837 | PCH_GBE_MAC_RGMII_CTRL_SETTING); | |
838 | break; | |
839 | case SPEED_1000: | |
840 | rgmii = (PCH_GBE_RGMII_RATE_125M | | |
841 | PCH_GBE_MAC_RGMII_CTRL_SETTING); | |
842 | break; | |
843 | } | |
844 | iowrite32(rgmii, &hw->reg->RGMII_CTRL); | |
845 | #else /* GMII */ | |
846 | rgmii = 0; | |
847 | iowrite32(rgmii, &hw->reg->RGMII_CTRL); | |
848 | #endif | |
849 | } | |
850 | static void pch_gbe_set_mode(struct pch_gbe_adapter *adapter, u16 speed, | |
851 | u16 duplex) | |
852 | { | |
853 | struct net_device *netdev = adapter->netdev; | |
854 | struct pch_gbe_hw *hw = &adapter->hw; | |
855 | unsigned long mode = 0; | |
856 | ||
857 | /* Set the communication mode */ | |
858 | switch (speed) { | |
859 | case SPEED_10: | |
860 | mode = PCH_GBE_MODE_MII_ETHER; | |
861 | netdev->tx_queue_len = 10; | |
862 | break; | |
863 | case SPEED_100: | |
864 | mode = PCH_GBE_MODE_MII_ETHER; | |
865 | netdev->tx_queue_len = 100; | |
866 | break; | |
867 | case SPEED_1000: | |
868 | mode = PCH_GBE_MODE_GMII_ETHER; | |
869 | break; | |
870 | } | |
871 | if (duplex == DUPLEX_FULL) | |
872 | mode |= PCH_GBE_MODE_FULL_DUPLEX; | |
873 | else | |
874 | mode |= PCH_GBE_MODE_HALF_DUPLEX; | |
875 | iowrite32(mode, &hw->reg->MODE); | |
876 | } | |
877 | ||
878 | /** | |
879 | * pch_gbe_watchdog - Watchdog process | |
880 | * @data: Board private structure | |
881 | */ | |
882 | static void pch_gbe_watchdog(unsigned long data) | |
883 | { | |
884 | struct pch_gbe_adapter *adapter = (struct pch_gbe_adapter *)data; | |
885 | struct net_device *netdev = adapter->netdev; | |
886 | struct pch_gbe_hw *hw = &adapter->hw; | |
887 | struct ethtool_cmd cmd; | |
888 | ||
889 | pr_debug("right now = %ld\n", jiffies); | |
890 | ||
891 | pch_gbe_update_stats(adapter); | |
892 | if ((mii_link_ok(&adapter->mii)) && (!netif_carrier_ok(netdev))) { | |
893 | netdev->tx_queue_len = adapter->tx_queue_len; | |
894 | /* mii library handles link maintenance tasks */ | |
895 | if (mii_ethtool_gset(&adapter->mii, &cmd)) { | |
896 | pr_err("ethtool get setting Error\n"); | |
897 | mod_timer(&adapter->watchdog_timer, | |
898 | round_jiffies(jiffies + | |
899 | PCH_GBE_WATCHDOG_PERIOD)); | |
900 | return; | |
901 | } | |
902 | hw->mac.link_speed = cmd.speed; | |
903 | hw->mac.link_duplex = cmd.duplex; | |
904 | /* Set the RGMII control. */ | |
905 | pch_gbe_set_rgmii_ctrl(adapter, hw->mac.link_speed, | |
906 | hw->mac.link_duplex); | |
907 | /* Set the communication mode */ | |
908 | pch_gbe_set_mode(adapter, hw->mac.link_speed, | |
909 | hw->mac.link_duplex); | |
910 | netdev_dbg(netdev, | |
911 | "Link is Up %d Mbps %s-Duplex\n", | |
912 | cmd.speed, | |
913 | cmd.duplex == DUPLEX_FULL ? "Full" : "Half"); | |
914 | netif_carrier_on(netdev); | |
915 | netif_wake_queue(netdev); | |
916 | } else if ((!mii_link_ok(&adapter->mii)) && | |
917 | (netif_carrier_ok(netdev))) { | |
918 | netdev_dbg(netdev, "NIC Link is Down\n"); | |
919 | hw->mac.link_speed = SPEED_10; | |
920 | hw->mac.link_duplex = DUPLEX_HALF; | |
921 | netif_carrier_off(netdev); | |
922 | netif_stop_queue(netdev); | |
923 | } | |
924 | mod_timer(&adapter->watchdog_timer, | |
925 | round_jiffies(jiffies + PCH_GBE_WATCHDOG_PERIOD)); | |
926 | } | |
927 | ||
928 | /** | |
929 | * pch_gbe_tx_queue - Carry out queuing of the transmission data | |
930 | * @adapter: Board private structure | |
931 | * @tx_ring: Tx descriptor ring structure | |
932 | * @skb: Sockt buffer structure | |
933 | */ | |
934 | static void pch_gbe_tx_queue(struct pch_gbe_adapter *adapter, | |
935 | struct pch_gbe_tx_ring *tx_ring, | |
936 | struct sk_buff *skb) | |
937 | { | |
938 | struct pch_gbe_hw *hw = &adapter->hw; | |
939 | struct pch_gbe_tx_desc *tx_desc; | |
940 | struct pch_gbe_buffer *buffer_info; | |
941 | struct sk_buff *tmp_skb; | |
942 | unsigned int frame_ctrl; | |
943 | unsigned int ring_num; | |
944 | unsigned long flags; | |
945 | ||
946 | /*-- Set frame control --*/ | |
947 | frame_ctrl = 0; | |
948 | if (unlikely(skb->len < PCH_GBE_SHORT_PKT)) | |
949 | frame_ctrl |= PCH_GBE_TXD_CTRL_APAD; | |
950 | if (unlikely(!adapter->tx_csum)) | |
951 | frame_ctrl |= PCH_GBE_TXD_CTRL_TCPIP_ACC_OFF; | |
952 | ||
953 | /* Performs checksum processing */ | |
954 | /* | |
955 | * It is because the hardware accelerator does not support a checksum, | |
956 | * when the received data size is less than 64 bytes. | |
957 | */ | |
958 | if ((skb->len < PCH_GBE_SHORT_PKT) && (adapter->tx_csum)) { | |
959 | frame_ctrl |= PCH_GBE_TXD_CTRL_APAD | | |
960 | PCH_GBE_TXD_CTRL_TCPIP_ACC_OFF; | |
961 | if (skb->protocol == htons(ETH_P_IP)) { | |
962 | struct iphdr *iph = ip_hdr(skb); | |
963 | unsigned int offset; | |
964 | iph->check = 0; | |
965 | iph->check = ip_fast_csum((u8 *) iph, iph->ihl); | |
966 | offset = skb_transport_offset(skb); | |
967 | if (iph->protocol == IPPROTO_TCP) { | |
968 | skb->csum = 0; | |
969 | tcp_hdr(skb)->check = 0; | |
970 | skb->csum = skb_checksum(skb, offset, | |
971 | skb->len - offset, 0); | |
972 | tcp_hdr(skb)->check = | |
973 | csum_tcpudp_magic(iph->saddr, | |
974 | iph->daddr, | |
975 | skb->len - offset, | |
976 | IPPROTO_TCP, | |
977 | skb->csum); | |
978 | } else if (iph->protocol == IPPROTO_UDP) { | |
979 | skb->csum = 0; | |
980 | udp_hdr(skb)->check = 0; | |
981 | skb->csum = | |
982 | skb_checksum(skb, offset, | |
983 | skb->len - offset, 0); | |
984 | udp_hdr(skb)->check = | |
985 | csum_tcpudp_magic(iph->saddr, | |
986 | iph->daddr, | |
987 | skb->len - offset, | |
988 | IPPROTO_UDP, | |
989 | skb->csum); | |
990 | } | |
991 | } | |
992 | } | |
993 | spin_lock_irqsave(&tx_ring->tx_lock, flags); | |
994 | ring_num = tx_ring->next_to_use; | |
995 | if (unlikely((ring_num + 1) == tx_ring->count)) | |
996 | tx_ring->next_to_use = 0; | |
997 | else | |
998 | tx_ring->next_to_use = ring_num + 1; | |
999 | ||
1000 | spin_unlock_irqrestore(&tx_ring->tx_lock, flags); | |
1001 | buffer_info = &tx_ring->buffer_info[ring_num]; | |
1002 | tmp_skb = buffer_info->skb; | |
1003 | ||
1004 | /* [Header:14][payload] ---> [Header:14][paddong:2][payload] */ | |
1005 | memcpy(tmp_skb->data, skb->data, ETH_HLEN); | |
1006 | tmp_skb->data[ETH_HLEN] = 0x00; | |
1007 | tmp_skb->data[ETH_HLEN + 1] = 0x00; | |
1008 | tmp_skb->len = skb->len; | |
1009 | memcpy(&tmp_skb->data[ETH_HLEN + 2], &skb->data[ETH_HLEN], | |
1010 | (skb->len - ETH_HLEN)); | |
1011 | /*-- Set Buffer infomation --*/ | |
1012 | buffer_info->length = tmp_skb->len; | |
1013 | buffer_info->dma = dma_map_single(&adapter->pdev->dev, tmp_skb->data, | |
1014 | buffer_info->length, | |
1015 | DMA_TO_DEVICE); | |
1016 | if (dma_mapping_error(&adapter->pdev->dev, buffer_info->dma)) { | |
1017 | pr_err("TX DMA map failed\n"); | |
1018 | buffer_info->dma = 0; | |
1019 | buffer_info->time_stamp = 0; | |
1020 | tx_ring->next_to_use = ring_num; | |
1021 | return; | |
1022 | } | |
1023 | buffer_info->mapped = true; | |
1024 | buffer_info->time_stamp = jiffies; | |
1025 | ||
1026 | /*-- Set Tx descriptor --*/ | |
1027 | tx_desc = PCH_GBE_TX_DESC(*tx_ring, ring_num); | |
1028 | tx_desc->buffer_addr = (buffer_info->dma); | |
1029 | tx_desc->length = (tmp_skb->len); | |
1030 | tx_desc->tx_words_eob = ((tmp_skb->len + 3)); | |
1031 | tx_desc->tx_frame_ctrl = (frame_ctrl); | |
1032 | tx_desc->gbec_status = (DSC_INIT16); | |
1033 | ||
1034 | if (unlikely(++ring_num == tx_ring->count)) | |
1035 | ring_num = 0; | |
1036 | ||
1037 | /* Update software pointer of TX descriptor */ | |
1038 | iowrite32(tx_ring->dma + | |
1039 | (int)sizeof(struct pch_gbe_tx_desc) * ring_num, | |
1040 | &hw->reg->TX_DSC_SW_P); | |
1041 | dev_kfree_skb_any(skb); | |
1042 | } | |
1043 | ||
1044 | /** | |
1045 | * pch_gbe_update_stats - Update the board statistics counters | |
1046 | * @adapter: Board private structure | |
1047 | */ | |
1048 | void pch_gbe_update_stats(struct pch_gbe_adapter *adapter) | |
1049 | { | |
1050 | struct net_device *netdev = adapter->netdev; | |
1051 | struct pci_dev *pdev = adapter->pdev; | |
1052 | struct pch_gbe_hw_stats *stats = &adapter->stats; | |
1053 | unsigned long flags; | |
1054 | ||
1055 | /* | |
1056 | * Prevent stats update while adapter is being reset, or if the pci | |
1057 | * connection is down. | |
1058 | */ | |
1059 | if ((pdev->error_state) && (pdev->error_state != pci_channel_io_normal)) | |
1060 | return; | |
1061 | ||
1062 | spin_lock_irqsave(&adapter->stats_lock, flags); | |
1063 | ||
1064 | /* Update device status "adapter->stats" */ | |
1065 | stats->rx_errors = stats->rx_crc_errors + stats->rx_frame_errors; | |
1066 | stats->tx_errors = stats->tx_length_errors + | |
1067 | stats->tx_aborted_errors + | |
1068 | stats->tx_carrier_errors + stats->tx_timeout_count; | |
1069 | ||
1070 | /* Update network device status "adapter->net_stats" */ | |
1071 | netdev->stats.rx_packets = stats->rx_packets; | |
1072 | netdev->stats.rx_bytes = stats->rx_bytes; | |
1073 | netdev->stats.rx_dropped = stats->rx_dropped; | |
1074 | netdev->stats.tx_packets = stats->tx_packets; | |
1075 | netdev->stats.tx_bytes = stats->tx_bytes; | |
1076 | netdev->stats.tx_dropped = stats->tx_dropped; | |
1077 | /* Fill out the OS statistics structure */ | |
1078 | netdev->stats.multicast = stats->multicast; | |
1079 | netdev->stats.collisions = stats->collisions; | |
1080 | /* Rx Errors */ | |
1081 | netdev->stats.rx_errors = stats->rx_errors; | |
1082 | netdev->stats.rx_crc_errors = stats->rx_crc_errors; | |
1083 | netdev->stats.rx_frame_errors = stats->rx_frame_errors; | |
1084 | /* Tx Errors */ | |
1085 | netdev->stats.tx_errors = stats->tx_errors; | |
1086 | netdev->stats.tx_aborted_errors = stats->tx_aborted_errors; | |
1087 | netdev->stats.tx_carrier_errors = stats->tx_carrier_errors; | |
1088 | ||
1089 | spin_unlock_irqrestore(&adapter->stats_lock, flags); | |
1090 | } | |
1091 | ||
1092 | /** | |
1093 | * pch_gbe_intr - Interrupt Handler | |
1094 | * @irq: Interrupt number | |
1095 | * @data: Pointer to a network interface device structure | |
1096 | * Returns | |
1097 | * - IRQ_HANDLED: Our interrupt | |
1098 | * - IRQ_NONE: Not our interrupt | |
1099 | */ | |
1100 | static irqreturn_t pch_gbe_intr(int irq, void *data) | |
1101 | { | |
1102 | struct net_device *netdev = data; | |
1103 | struct pch_gbe_adapter *adapter = netdev_priv(netdev); | |
1104 | struct pch_gbe_hw *hw = &adapter->hw; | |
1105 | u32 int_st; | |
1106 | u32 int_en; | |
1107 | ||
1108 | /* Check request status */ | |
1109 | int_st = ioread32(&hw->reg->INT_ST); | |
1110 | int_st = int_st & ioread32(&hw->reg->INT_EN); | |
1111 | /* When request status is no interruption factor */ | |
1112 | if (unlikely(!int_st)) | |
1113 | return IRQ_NONE; /* Not our interrupt. End processing. */ | |
1114 | pr_debug("%s occur int_st = 0x%08x\n", __func__, int_st); | |
1115 | if (int_st & PCH_GBE_INT_RX_FRAME_ERR) | |
1116 | adapter->stats.intr_rx_frame_err_count++; | |
1117 | if (int_st & PCH_GBE_INT_RX_FIFO_ERR) | |
1118 | adapter->stats.intr_rx_fifo_err_count++; | |
1119 | if (int_st & PCH_GBE_INT_RX_DMA_ERR) | |
1120 | adapter->stats.intr_rx_dma_err_count++; | |
1121 | if (int_st & PCH_GBE_INT_TX_FIFO_ERR) | |
1122 | adapter->stats.intr_tx_fifo_err_count++; | |
1123 | if (int_st & PCH_GBE_INT_TX_DMA_ERR) | |
1124 | adapter->stats.intr_tx_dma_err_count++; | |
1125 | if (int_st & PCH_GBE_INT_TCPIP_ERR) | |
1126 | adapter->stats.intr_tcpip_err_count++; | |
1127 | /* When Rx descriptor is empty */ | |
1128 | if ((int_st & PCH_GBE_INT_RX_DSC_EMP)) { | |
1129 | adapter->stats.intr_rx_dsc_empty_count++; | |
1130 | pr_err("Rx descriptor is empty\n"); | |
1131 | int_en = ioread32(&hw->reg->INT_EN); | |
1132 | iowrite32((int_en & ~PCH_GBE_INT_RX_DSC_EMP), &hw->reg->INT_EN); | |
1133 | if (hw->mac.tx_fc_enable) { | |
1134 | /* Set Pause packet */ | |
1135 | pch_gbe_mac_set_pause_packet(hw); | |
1136 | } | |
1137 | if ((int_en & (PCH_GBE_INT_RX_DMA_CMPLT | PCH_GBE_INT_TX_CMPLT)) | |
1138 | == 0) { | |
1139 | return IRQ_HANDLED; | |
1140 | } | |
1141 | } | |
1142 | ||
1143 | /* When request status is Receive interruption */ | |
1144 | if ((int_st & (PCH_GBE_INT_RX_DMA_CMPLT | PCH_GBE_INT_TX_CMPLT))) { | |
1145 | if (likely(napi_schedule_prep(&adapter->napi))) { | |
1146 | /* Enable only Rx Descriptor empty */ | |
1147 | atomic_inc(&adapter->irq_sem); | |
1148 | int_en = ioread32(&hw->reg->INT_EN); | |
1149 | int_en &= | |
1150 | ~(PCH_GBE_INT_RX_DMA_CMPLT | PCH_GBE_INT_TX_CMPLT); | |
1151 | iowrite32(int_en, &hw->reg->INT_EN); | |
1152 | /* Start polling for NAPI */ | |
1153 | __napi_schedule(&adapter->napi); | |
1154 | } | |
1155 | } | |
1156 | pr_debug("return = 0x%08x INT_EN reg = 0x%08x\n", | |
1157 | IRQ_HANDLED, ioread32(&hw->reg->INT_EN)); | |
1158 | return IRQ_HANDLED; | |
1159 | } | |
1160 | ||
1161 | /** | |
1162 | * pch_gbe_alloc_rx_buffers - Replace used receive buffers; legacy & extended | |
1163 | * @adapter: Board private structure | |
1164 | * @rx_ring: Rx descriptor ring | |
1165 | * @cleaned_count: Cleaned count | |
1166 | */ | |
1167 | static void | |
1168 | pch_gbe_alloc_rx_buffers(struct pch_gbe_adapter *adapter, | |
1169 | struct pch_gbe_rx_ring *rx_ring, int cleaned_count) | |
1170 | { | |
1171 | struct net_device *netdev = adapter->netdev; | |
1172 | struct pci_dev *pdev = adapter->pdev; | |
1173 | struct pch_gbe_hw *hw = &adapter->hw; | |
1174 | struct pch_gbe_rx_desc *rx_desc; | |
1175 | struct pch_gbe_buffer *buffer_info; | |
1176 | struct sk_buff *skb; | |
1177 | unsigned int i; | |
1178 | unsigned int bufsz; | |
1179 | ||
1180 | bufsz = adapter->rx_buffer_len + PCH_GBE_DMA_ALIGN; | |
1181 | i = rx_ring->next_to_use; | |
1182 | ||
1183 | while ((cleaned_count--)) { | |
1184 | buffer_info = &rx_ring->buffer_info[i]; | |
1185 | skb = buffer_info->skb; | |
1186 | if (skb) { | |
1187 | skb_trim(skb, 0); | |
1188 | } else { | |
1189 | skb = netdev_alloc_skb(netdev, bufsz); | |
1190 | if (unlikely(!skb)) { | |
1191 | /* Better luck next round */ | |
1192 | adapter->stats.rx_alloc_buff_failed++; | |
1193 | break; | |
1194 | } | |
1195 | /* 64byte align */ | |
1196 | skb_reserve(skb, PCH_GBE_DMA_ALIGN); | |
1197 | ||
1198 | buffer_info->skb = skb; | |
1199 | buffer_info->length = adapter->rx_buffer_len; | |
1200 | } | |
1201 | buffer_info->dma = dma_map_single(&pdev->dev, | |
1202 | skb->data, | |
1203 | buffer_info->length, | |
1204 | DMA_FROM_DEVICE); | |
1205 | if (dma_mapping_error(&adapter->pdev->dev, buffer_info->dma)) { | |
1206 | dev_kfree_skb(skb); | |
1207 | buffer_info->skb = NULL; | |
1208 | buffer_info->dma = 0; | |
1209 | adapter->stats.rx_alloc_buff_failed++; | |
1210 | break; /* while !buffer_info->skb */ | |
1211 | } | |
1212 | buffer_info->mapped = true; | |
1213 | rx_desc = PCH_GBE_RX_DESC(*rx_ring, i); | |
1214 | rx_desc->buffer_addr = (buffer_info->dma); | |
1215 | rx_desc->gbec_status = DSC_INIT16; | |
1216 | ||
1217 | pr_debug("i = %d buffer_info->dma = 0x08%llx buffer_info->length = 0x%x\n", | |
1218 | i, (unsigned long long)buffer_info->dma, | |
1219 | buffer_info->length); | |
1220 | ||
1221 | if (unlikely(++i == rx_ring->count)) | |
1222 | i = 0; | |
1223 | } | |
1224 | if (likely(rx_ring->next_to_use != i)) { | |
1225 | rx_ring->next_to_use = i; | |
1226 | if (unlikely(i-- == 0)) | |
1227 | i = (rx_ring->count - 1); | |
1228 | iowrite32(rx_ring->dma + | |
1229 | (int)sizeof(struct pch_gbe_rx_desc) * i, | |
1230 | &hw->reg->RX_DSC_SW_P); | |
1231 | } | |
1232 | return; | |
1233 | } | |
1234 | ||
1235 | /** | |
1236 | * pch_gbe_alloc_tx_buffers - Allocate transmit buffers | |
1237 | * @adapter: Board private structure | |
1238 | * @tx_ring: Tx descriptor ring | |
1239 | */ | |
1240 | static void pch_gbe_alloc_tx_buffers(struct pch_gbe_adapter *adapter, | |
1241 | struct pch_gbe_tx_ring *tx_ring) | |
1242 | { | |
1243 | struct pch_gbe_buffer *buffer_info; | |
1244 | struct sk_buff *skb; | |
1245 | unsigned int i; | |
1246 | unsigned int bufsz; | |
1247 | struct pch_gbe_tx_desc *tx_desc; | |
1248 | ||
1249 | bufsz = | |
1250 | adapter->hw.mac.max_frame_size + PCH_GBE_DMA_ALIGN + NET_IP_ALIGN; | |
1251 | ||
1252 | for (i = 0; i < tx_ring->count; i++) { | |
1253 | buffer_info = &tx_ring->buffer_info[i]; | |
1254 | skb = netdev_alloc_skb(adapter->netdev, bufsz); | |
1255 | skb_reserve(skb, PCH_GBE_DMA_ALIGN); | |
1256 | buffer_info->skb = skb; | |
1257 | tx_desc = PCH_GBE_TX_DESC(*tx_ring, i); | |
1258 | tx_desc->gbec_status = (DSC_INIT16); | |
1259 | } | |
1260 | return; | |
1261 | } | |
1262 | ||
1263 | /** | |
1264 | * pch_gbe_clean_tx - Reclaim resources after transmit completes | |
1265 | * @adapter: Board private structure | |
1266 | * @tx_ring: Tx descriptor ring | |
1267 | * Returns | |
1268 | * true: Cleaned the descriptor | |
1269 | * false: Not cleaned the descriptor | |
1270 | */ | |
1271 | static bool | |
1272 | pch_gbe_clean_tx(struct pch_gbe_adapter *adapter, | |
1273 | struct pch_gbe_tx_ring *tx_ring) | |
1274 | { | |
1275 | struct pch_gbe_tx_desc *tx_desc; | |
1276 | struct pch_gbe_buffer *buffer_info; | |
1277 | struct sk_buff *skb; | |
1278 | unsigned int i; | |
1279 | unsigned int cleaned_count = 0; | |
1280 | bool cleaned = false; | |
1281 | ||
1282 | pr_debug("next_to_clean : %d\n", tx_ring->next_to_clean); | |
1283 | ||
1284 | i = tx_ring->next_to_clean; | |
1285 | tx_desc = PCH_GBE_TX_DESC(*tx_ring, i); | |
1286 | pr_debug("gbec_status:0x%04x dma_status:0x%04x\n", | |
1287 | tx_desc->gbec_status, tx_desc->dma_status); | |
1288 | ||
1289 | while ((tx_desc->gbec_status & DSC_INIT16) == 0x0000) { | |
1290 | pr_debug("gbec_status:0x%04x\n", tx_desc->gbec_status); | |
1291 | cleaned = true; | |
1292 | buffer_info = &tx_ring->buffer_info[i]; | |
1293 | skb = buffer_info->skb; | |
1294 | ||
1295 | if ((tx_desc->gbec_status & PCH_GBE_TXD_GMAC_STAT_ABT)) { | |
1296 | adapter->stats.tx_aborted_errors++; | |
1297 | pr_err("Transfer Abort Error\n"); | |
1298 | } else if ((tx_desc->gbec_status & PCH_GBE_TXD_GMAC_STAT_CRSER) | |
1299 | ) { | |
1300 | adapter->stats.tx_carrier_errors++; | |
1301 | pr_err("Transfer Carrier Sense Error\n"); | |
1302 | } else if ((tx_desc->gbec_status & PCH_GBE_TXD_GMAC_STAT_EXCOL) | |
1303 | ) { | |
1304 | adapter->stats.tx_aborted_errors++; | |
1305 | pr_err("Transfer Collision Abort Error\n"); | |
1306 | } else if ((tx_desc->gbec_status & | |
1307 | (PCH_GBE_TXD_GMAC_STAT_SNGCOL | | |
1308 | PCH_GBE_TXD_GMAC_STAT_MLTCOL))) { | |
1309 | adapter->stats.collisions++; | |
1310 | adapter->stats.tx_packets++; | |
1311 | adapter->stats.tx_bytes += skb->len; | |
1312 | pr_debug("Transfer Collision\n"); | |
1313 | } else if ((tx_desc->gbec_status & PCH_GBE_TXD_GMAC_STAT_CMPLT) | |
1314 | ) { | |
1315 | adapter->stats.tx_packets++; | |
1316 | adapter->stats.tx_bytes += skb->len; | |
1317 | } | |
1318 | if (buffer_info->mapped) { | |
1319 | pr_debug("unmap buffer_info->dma : %d\n", i); | |
1320 | dma_unmap_single(&adapter->pdev->dev, buffer_info->dma, | |
1321 | buffer_info->length, DMA_TO_DEVICE); | |
1322 | buffer_info->mapped = false; | |
1323 | } | |
1324 | if (buffer_info->skb) { | |
1325 | pr_debug("trim buffer_info->skb : %d\n", i); | |
1326 | skb_trim(buffer_info->skb, 0); | |
1327 | } | |
1328 | tx_desc->gbec_status = DSC_INIT16; | |
1329 | if (unlikely(++i == tx_ring->count)) | |
1330 | i = 0; | |
1331 | tx_desc = PCH_GBE_TX_DESC(*tx_ring, i); | |
1332 | ||
1333 | /* weight of a sort for tx, to avoid endless transmit cleanup */ | |
1334 | if (cleaned_count++ == PCH_GBE_TX_WEIGHT) | |
1335 | break; | |
1336 | } | |
1337 | pr_debug("called pch_gbe_unmap_and_free_tx_resource() %d count\n", | |
1338 | cleaned_count); | |
1339 | /* Recover from running out of Tx resources in xmit_frame */ | |
1340 | if (unlikely(cleaned && (netif_queue_stopped(adapter->netdev)))) { | |
1341 | netif_wake_queue(adapter->netdev); | |
1342 | adapter->stats.tx_restart_count++; | |
1343 | pr_debug("Tx wake queue\n"); | |
1344 | } | |
1345 | spin_lock(&adapter->tx_queue_lock); | |
1346 | tx_ring->next_to_clean = i; | |
1347 | spin_unlock(&adapter->tx_queue_lock); | |
1348 | pr_debug("next_to_clean : %d\n", tx_ring->next_to_clean); | |
1349 | return cleaned; | |
1350 | } | |
1351 | ||
1352 | /** | |
1353 | * pch_gbe_clean_rx - Send received data up the network stack; legacy | |
1354 | * @adapter: Board private structure | |
1355 | * @rx_ring: Rx descriptor ring | |
1356 | * @work_done: Completed count | |
1357 | * @work_to_do: Request count | |
1358 | * Returns | |
1359 | * true: Cleaned the descriptor | |
1360 | * false: Not cleaned the descriptor | |
1361 | */ | |
1362 | static bool | |
1363 | pch_gbe_clean_rx(struct pch_gbe_adapter *adapter, | |
1364 | struct pch_gbe_rx_ring *rx_ring, | |
1365 | int *work_done, int work_to_do) | |
1366 | { | |
1367 | struct net_device *netdev = adapter->netdev; | |
1368 | struct pci_dev *pdev = adapter->pdev; | |
1369 | struct pch_gbe_buffer *buffer_info; | |
1370 | struct pch_gbe_rx_desc *rx_desc; | |
1371 | u32 length; | |
1372 | unsigned char tmp_packet[ETH_HLEN]; | |
1373 | unsigned int i; | |
1374 | unsigned int cleaned_count = 0; | |
1375 | bool cleaned = false; | |
1376 | struct sk_buff *skb; | |
1377 | u8 dma_status; | |
1378 | u16 gbec_status; | |
1379 | u32 tcp_ip_status; | |
1380 | u8 skb_copy_flag = 0; | |
1381 | u8 skb_padding_flag = 0; | |
1382 | ||
1383 | i = rx_ring->next_to_clean; | |
1384 | ||
1385 | while (*work_done < work_to_do) { | |
1386 | /* Check Rx descriptor status */ | |
1387 | rx_desc = PCH_GBE_RX_DESC(*rx_ring, i); | |
1388 | if (rx_desc->gbec_status == DSC_INIT16) | |
1389 | break; | |
1390 | cleaned = true; | |
1391 | cleaned_count++; | |
1392 | ||
1393 | dma_status = rx_desc->dma_status; | |
1394 | gbec_status = rx_desc->gbec_status; | |
1395 | tcp_ip_status = rx_desc->tcp_ip_status; | |
1396 | rx_desc->gbec_status = DSC_INIT16; | |
1397 | buffer_info = &rx_ring->buffer_info[i]; | |
1398 | skb = buffer_info->skb; | |
1399 | ||
1400 | /* unmap dma */ | |
1401 | dma_unmap_single(&pdev->dev, buffer_info->dma, | |
1402 | buffer_info->length, DMA_FROM_DEVICE); | |
1403 | buffer_info->mapped = false; | |
1404 | /* Prefetch the packet */ | |
1405 | prefetch(skb->data); | |
1406 | ||
1407 | pr_debug("RxDecNo = 0x%04x Status[DMA:0x%02x GBE:0x%04x " | |
1408 | "TCP:0x%08x] BufInf = 0x%p\n", | |
1409 | i, dma_status, gbec_status, tcp_ip_status, | |
1410 | buffer_info); | |
1411 | /* Error check */ | |
1412 | if (unlikely(gbec_status & PCH_GBE_RXD_GMAC_STAT_NOTOCTAL)) { | |
1413 | adapter->stats.rx_frame_errors++; | |
1414 | pr_err("Receive Not Octal Error\n"); | |
1415 | } else if (unlikely(gbec_status & | |
1416 | PCH_GBE_RXD_GMAC_STAT_NBLERR)) { | |
1417 | adapter->stats.rx_frame_errors++; | |
1418 | pr_err("Receive Nibble Error\n"); | |
1419 | } else if (unlikely(gbec_status & | |
1420 | PCH_GBE_RXD_GMAC_STAT_CRCERR)) { | |
1421 | adapter->stats.rx_crc_errors++; | |
1422 | pr_err("Receive CRC Error\n"); | |
1423 | } else { | |
1424 | /* get receive length */ | |
1425 | /* length convert[-3], padding[-2] */ | |
1426 | length = (rx_desc->rx_words_eob) - 3 - 2; | |
1427 | ||
1428 | /* Decide the data conversion method */ | |
1429 | if (!adapter->rx_csum) { | |
1430 | /* [Header:14][payload] */ | |
1431 | skb_padding_flag = 0; | |
1432 | skb_copy_flag = 1; | |
1433 | } else { | |
1434 | /* [Header:14][padding:2][payload] */ | |
1435 | skb_padding_flag = 1; | |
1436 | if (length < copybreak) | |
1437 | skb_copy_flag = 1; | |
1438 | else | |
1439 | skb_copy_flag = 0; | |
1440 | } | |
1441 | ||
1442 | /* Data conversion */ | |
1443 | if (skb_copy_flag) { /* recycle skb */ | |
1444 | struct sk_buff *new_skb; | |
1445 | new_skb = | |
1446 | netdev_alloc_skb(netdev, | |
1447 | length + NET_IP_ALIGN); | |
1448 | if (new_skb) { | |
1449 | if (!skb_padding_flag) { | |
1450 | skb_reserve(new_skb, | |
1451 | NET_IP_ALIGN); | |
1452 | } | |
1453 | memcpy(new_skb->data, skb->data, | |
1454 | length); | |
1455 | /* save the skb | |
1456 | * in buffer_info as good */ | |
1457 | skb = new_skb; | |
1458 | } else if (!skb_padding_flag) { | |
1459 | /* dorrop error */ | |
1460 | pr_err("New skb allocation Error\n"); | |
1461 | goto dorrop; | |
1462 | } | |
1463 | } else { | |
1464 | buffer_info->skb = NULL; | |
1465 | } | |
1466 | if (skb_padding_flag) { | |
1467 | memcpy(&tmp_packet[0], &skb->data[0], ETH_HLEN); | |
1468 | memcpy(&skb->data[NET_IP_ALIGN], &tmp_packet[0], | |
1469 | ETH_HLEN); | |
1470 | skb_reserve(skb, NET_IP_ALIGN); | |
1471 | ||
1472 | } | |
1473 | ||
1474 | /* update status of driver */ | |
1475 | adapter->stats.rx_bytes += length; | |
1476 | adapter->stats.rx_packets++; | |
1477 | if ((gbec_status & PCH_GBE_RXD_GMAC_STAT_MARMLT)) | |
1478 | adapter->stats.multicast++; | |
1479 | /* Write meta date of skb */ | |
1480 | skb_put(skb, length); | |
1481 | skb->protocol = eth_type_trans(skb, netdev); | |
1482 | if ((tcp_ip_status & PCH_GBE_RXD_ACC_STAT_TCPIPOK) == | |
1483 | PCH_GBE_RXD_ACC_STAT_TCPIPOK) { | |
1484 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
1485 | } else { | |
1486 | skb->ip_summed = CHECKSUM_NONE; | |
1487 | } | |
1488 | napi_gro_receive(&adapter->napi, skb); | |
1489 | (*work_done)++; | |
1490 | pr_debug("Receive skb->ip_summed: %d length: %d\n", | |
1491 | skb->ip_summed, length); | |
1492 | } | |
1493 | dorrop: | |
1494 | /* return some buffers to hardware, one at a time is too slow */ | |
1495 | if (unlikely(cleaned_count >= PCH_GBE_RX_BUFFER_WRITE)) { | |
1496 | pch_gbe_alloc_rx_buffers(adapter, rx_ring, | |
1497 | cleaned_count); | |
1498 | cleaned_count = 0; | |
1499 | } | |
1500 | if (++i == rx_ring->count) | |
1501 | i = 0; | |
1502 | } | |
1503 | rx_ring->next_to_clean = i; | |
1504 | if (cleaned_count) | |
1505 | pch_gbe_alloc_rx_buffers(adapter, rx_ring, cleaned_count); | |
1506 | return cleaned; | |
1507 | } | |
1508 | ||
1509 | /** | |
1510 | * pch_gbe_setup_tx_resources - Allocate Tx resources (Descriptors) | |
1511 | * @adapter: Board private structure | |
1512 | * @tx_ring: Tx descriptor ring (for a specific queue) to setup | |
1513 | * Returns | |
1514 | * 0: Successfully | |
1515 | * Negative value: Failed | |
1516 | */ | |
1517 | int pch_gbe_setup_tx_resources(struct pch_gbe_adapter *adapter, | |
1518 | struct pch_gbe_tx_ring *tx_ring) | |
1519 | { | |
1520 | struct pci_dev *pdev = adapter->pdev; | |
1521 | struct pch_gbe_tx_desc *tx_desc; | |
1522 | int size; | |
1523 | int desNo; | |
1524 | ||
1525 | size = (int)sizeof(struct pch_gbe_buffer) * tx_ring->count; | |
1526 | tx_ring->buffer_info = vmalloc(size); | |
1527 | if (!tx_ring->buffer_info) { | |
1528 | pr_err("Unable to allocate memory for the buffer infomation\n"); | |
1529 | return -ENOMEM; | |
1530 | } | |
1531 | memset(tx_ring->buffer_info, 0, size); | |
1532 | ||
1533 | tx_ring->size = tx_ring->count * (int)sizeof(struct pch_gbe_tx_desc); | |
1534 | ||
1535 | tx_ring->desc = dma_alloc_coherent(&pdev->dev, tx_ring->size, | |
1536 | &tx_ring->dma, GFP_KERNEL); | |
1537 | if (!tx_ring->desc) { | |
1538 | vfree(tx_ring->buffer_info); | |
1539 | pr_err("Unable to allocate memory for the transmit descriptor ring\n"); | |
1540 | return -ENOMEM; | |
1541 | } | |
1542 | memset(tx_ring->desc, 0, tx_ring->size); | |
1543 | ||
1544 | tx_ring->next_to_use = 0; | |
1545 | tx_ring->next_to_clean = 0; | |
1546 | spin_lock_init(&tx_ring->tx_lock); | |
1547 | ||
1548 | for (desNo = 0; desNo < tx_ring->count; desNo++) { | |
1549 | tx_desc = PCH_GBE_TX_DESC(*tx_ring, desNo); | |
1550 | tx_desc->gbec_status = DSC_INIT16; | |
1551 | } | |
1552 | pr_debug("tx_ring->desc = 0x%p tx_ring->dma = 0x%08llx\n" | |
1553 | "next_to_clean = 0x%08x next_to_use = 0x%08x\n", | |
1554 | tx_ring->desc, (unsigned long long)tx_ring->dma, | |
1555 | tx_ring->next_to_clean, tx_ring->next_to_use); | |
1556 | return 0; | |
1557 | } | |
1558 | ||
1559 | /** | |
1560 | * pch_gbe_setup_rx_resources - Allocate Rx resources (Descriptors) | |
1561 | * @adapter: Board private structure | |
1562 | * @rx_ring: Rx descriptor ring (for a specific queue) to setup | |
1563 | * Returns | |
1564 | * 0: Successfully | |
1565 | * Negative value: Failed | |
1566 | */ | |
1567 | int pch_gbe_setup_rx_resources(struct pch_gbe_adapter *adapter, | |
1568 | struct pch_gbe_rx_ring *rx_ring) | |
1569 | { | |
1570 | struct pci_dev *pdev = adapter->pdev; | |
1571 | struct pch_gbe_rx_desc *rx_desc; | |
1572 | int size; | |
1573 | int desNo; | |
1574 | ||
1575 | size = (int)sizeof(struct pch_gbe_buffer) * rx_ring->count; | |
1576 | rx_ring->buffer_info = vmalloc(size); | |
1577 | if (!rx_ring->buffer_info) { | |
1578 | pr_err("Unable to allocate memory for the receive descriptor ring\n"); | |
1579 | return -ENOMEM; | |
1580 | } | |
1581 | memset(rx_ring->buffer_info, 0, size); | |
1582 | rx_ring->size = rx_ring->count * (int)sizeof(struct pch_gbe_rx_desc); | |
1583 | rx_ring->desc = dma_alloc_coherent(&pdev->dev, rx_ring->size, | |
1584 | &rx_ring->dma, GFP_KERNEL); | |
1585 | ||
1586 | if (!rx_ring->desc) { | |
1587 | pr_err("Unable to allocate memory for the receive descriptor ring\n"); | |
1588 | vfree(rx_ring->buffer_info); | |
1589 | return -ENOMEM; | |
1590 | } | |
1591 | memset(rx_ring->desc, 0, rx_ring->size); | |
1592 | rx_ring->next_to_clean = 0; | |
1593 | rx_ring->next_to_use = 0; | |
1594 | for (desNo = 0; desNo < rx_ring->count; desNo++) { | |
1595 | rx_desc = PCH_GBE_RX_DESC(*rx_ring, desNo); | |
1596 | rx_desc->gbec_status = DSC_INIT16; | |
1597 | } | |
1598 | pr_debug("rx_ring->desc = 0x%p rx_ring->dma = 0x%08llx " | |
1599 | "next_to_clean = 0x%08x next_to_use = 0x%08x\n", | |
1600 | rx_ring->desc, (unsigned long long)rx_ring->dma, | |
1601 | rx_ring->next_to_clean, rx_ring->next_to_use); | |
1602 | return 0; | |
1603 | } | |
1604 | ||
1605 | /** | |
1606 | * pch_gbe_free_tx_resources - Free Tx Resources | |
1607 | * @adapter: Board private structure | |
1608 | * @tx_ring: Tx descriptor ring for a specific queue | |
1609 | */ | |
1610 | void pch_gbe_free_tx_resources(struct pch_gbe_adapter *adapter, | |
1611 | struct pch_gbe_tx_ring *tx_ring) | |
1612 | { | |
1613 | struct pci_dev *pdev = adapter->pdev; | |
1614 | ||
1615 | pch_gbe_clean_tx_ring(adapter, tx_ring); | |
1616 | vfree(tx_ring->buffer_info); | |
1617 | tx_ring->buffer_info = NULL; | |
1618 | pci_free_consistent(pdev, tx_ring->size, tx_ring->desc, tx_ring->dma); | |
1619 | tx_ring->desc = NULL; | |
1620 | } | |
1621 | ||
1622 | /** | |
1623 | * pch_gbe_free_rx_resources - Free Rx Resources | |
1624 | * @adapter: Board private structure | |
1625 | * @rx_ring: Ring to clean the resources from | |
1626 | */ | |
1627 | void pch_gbe_free_rx_resources(struct pch_gbe_adapter *adapter, | |
1628 | struct pch_gbe_rx_ring *rx_ring) | |
1629 | { | |
1630 | struct pci_dev *pdev = adapter->pdev; | |
1631 | ||
1632 | pch_gbe_clean_rx_ring(adapter, rx_ring); | |
1633 | vfree(rx_ring->buffer_info); | |
1634 | rx_ring->buffer_info = NULL; | |
1635 | pci_free_consistent(pdev, rx_ring->size, rx_ring->desc, rx_ring->dma); | |
1636 | rx_ring->desc = NULL; | |
1637 | } | |
1638 | ||
1639 | /** | |
1640 | * pch_gbe_request_irq - Allocate an interrupt line | |
1641 | * @adapter: Board private structure | |
1642 | * Returns | |
1643 | * 0: Successfully | |
1644 | * Negative value: Failed | |
1645 | */ | |
1646 | static int pch_gbe_request_irq(struct pch_gbe_adapter *adapter) | |
1647 | { | |
1648 | struct net_device *netdev = adapter->netdev; | |
1649 | int err; | |
1650 | int flags; | |
1651 | ||
1652 | flags = IRQF_SHARED; | |
1653 | adapter->have_msi = false; | |
1654 | err = pci_enable_msi(adapter->pdev); | |
1655 | pr_debug("call pci_enable_msi\n"); | |
1656 | if (err) { | |
1657 | pr_debug("call pci_enable_msi - Error: %d\n", err); | |
1658 | } else { | |
1659 | flags = 0; | |
1660 | adapter->have_msi = true; | |
1661 | } | |
1662 | err = request_irq(adapter->pdev->irq, &pch_gbe_intr, | |
1663 | flags, netdev->name, netdev); | |
1664 | if (err) | |
1665 | pr_err("Unable to allocate interrupt Error: %d\n", err); | |
1666 | pr_debug("adapter->have_msi : %d flags : 0x%04x return : 0x%04x\n", | |
1667 | adapter->have_msi, flags, err); | |
1668 | return err; | |
1669 | } | |
1670 | ||
1671 | ||
1672 | static void pch_gbe_set_multi(struct net_device *netdev); | |
1673 | /** | |
1674 | * pch_gbe_up - Up GbE network device | |
1675 | * @adapter: Board private structure | |
1676 | * Returns | |
1677 | * 0: Successfully | |
1678 | * Negative value: Failed | |
1679 | */ | |
1680 | int pch_gbe_up(struct pch_gbe_adapter *adapter) | |
1681 | { | |
1682 | struct net_device *netdev = adapter->netdev; | |
1683 | struct pch_gbe_tx_ring *tx_ring = adapter->tx_ring; | |
1684 | struct pch_gbe_rx_ring *rx_ring = adapter->rx_ring; | |
1685 | int err; | |
1686 | ||
1687 | /* hardware has been reset, we need to reload some things */ | |
1688 | pch_gbe_set_multi(netdev); | |
1689 | ||
1690 | pch_gbe_setup_tctl(adapter); | |
1691 | pch_gbe_configure_tx(adapter); | |
1692 | pch_gbe_setup_rctl(adapter); | |
1693 | pch_gbe_configure_rx(adapter); | |
1694 | ||
1695 | err = pch_gbe_request_irq(adapter); | |
1696 | if (err) { | |
1697 | pr_err("Error: can't bring device up\n"); | |
1698 | return err; | |
1699 | } | |
1700 | pch_gbe_alloc_tx_buffers(adapter, tx_ring); | |
1701 | pch_gbe_alloc_rx_buffers(adapter, rx_ring, rx_ring->count); | |
1702 | adapter->tx_queue_len = netdev->tx_queue_len; | |
1703 | ||
1704 | mod_timer(&adapter->watchdog_timer, jiffies); | |
1705 | ||
1706 | napi_enable(&adapter->napi); | |
1707 | pch_gbe_irq_enable(adapter); | |
1708 | netif_start_queue(adapter->netdev); | |
1709 | ||
1710 | return 0; | |
1711 | } | |
1712 | ||
1713 | /** | |
1714 | * pch_gbe_down - Down GbE network device | |
1715 | * @adapter: Board private structure | |
1716 | */ | |
1717 | void pch_gbe_down(struct pch_gbe_adapter *adapter) | |
1718 | { | |
1719 | struct net_device *netdev = adapter->netdev; | |
1720 | ||
1721 | /* signal that we're down so the interrupt handler does not | |
1722 | * reschedule our watchdog timer */ | |
1723 | napi_disable(&adapter->napi); | |
1724 | atomic_set(&adapter->irq_sem, 0); | |
1725 | ||
1726 | pch_gbe_irq_disable(adapter); | |
1727 | pch_gbe_free_irq(adapter); | |
1728 | ||
1729 | del_timer_sync(&adapter->watchdog_timer); | |
1730 | ||
1731 | netdev->tx_queue_len = adapter->tx_queue_len; | |
1732 | netif_carrier_off(netdev); | |
1733 | netif_stop_queue(netdev); | |
1734 | ||
1735 | pch_gbe_reset(adapter); | |
1736 | pch_gbe_clean_tx_ring(adapter, adapter->tx_ring); | |
1737 | pch_gbe_clean_rx_ring(adapter, adapter->rx_ring); | |
1738 | } | |
1739 | ||
1740 | /** | |
1741 | * pch_gbe_sw_init - Initialize general software structures (struct pch_gbe_adapter) | |
1742 | * @adapter: Board private structure to initialize | |
1743 | * Returns | |
1744 | * 0: Successfully | |
1745 | * Negative value: Failed | |
1746 | */ | |
1747 | static int pch_gbe_sw_init(struct pch_gbe_adapter *adapter) | |
1748 | { | |
1749 | struct pch_gbe_hw *hw = &adapter->hw; | |
1750 | struct net_device *netdev = adapter->netdev; | |
1751 | ||
1752 | adapter->rx_buffer_len = PCH_GBE_FRAME_SIZE_2048; | |
1753 | hw->mac.max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN; | |
1754 | hw->mac.min_frame_size = ETH_ZLEN + ETH_FCS_LEN; | |
1755 | ||
1756 | /* Initialize the hardware-specific values */ | |
1757 | if (pch_gbe_hal_setup_init_funcs(hw)) { | |
1758 | pr_err("Hardware Initialization Failure\n"); | |
1759 | return -EIO; | |
1760 | } | |
1761 | if (pch_gbe_alloc_queues(adapter)) { | |
1762 | pr_err("Unable to allocate memory for queues\n"); | |
1763 | return -ENOMEM; | |
1764 | } | |
1765 | spin_lock_init(&adapter->hw.miim_lock); | |
1766 | spin_lock_init(&adapter->tx_queue_lock); | |
1767 | spin_lock_init(&adapter->stats_lock); | |
1768 | spin_lock_init(&adapter->ethtool_lock); | |
1769 | atomic_set(&adapter->irq_sem, 0); | |
1770 | pch_gbe_irq_disable(adapter); | |
1771 | ||
1772 | pch_gbe_init_stats(adapter); | |
1773 | ||
1774 | pr_debug("rx_buffer_len : %d mac.min_frame_size : %d mac.max_frame_size : %d\n", | |
1775 | (u32) adapter->rx_buffer_len, | |
1776 | hw->mac.min_frame_size, hw->mac.max_frame_size); | |
1777 | return 0; | |
1778 | } | |
1779 | ||
1780 | /** | |
1781 | * pch_gbe_open - Called when a network interface is made active | |
1782 | * @netdev: Network interface device structure | |
1783 | * Returns | |
1784 | * 0: Successfully | |
1785 | * Negative value: Failed | |
1786 | */ | |
1787 | static int pch_gbe_open(struct net_device *netdev) | |
1788 | { | |
1789 | struct pch_gbe_adapter *adapter = netdev_priv(netdev); | |
1790 | struct pch_gbe_hw *hw = &adapter->hw; | |
1791 | int err; | |
1792 | ||
1793 | /* allocate transmit descriptors */ | |
1794 | err = pch_gbe_setup_tx_resources(adapter, adapter->tx_ring); | |
1795 | if (err) | |
1796 | goto err_setup_tx; | |
1797 | /* allocate receive descriptors */ | |
1798 | err = pch_gbe_setup_rx_resources(adapter, adapter->rx_ring); | |
1799 | if (err) | |
1800 | goto err_setup_rx; | |
1801 | pch_gbe_hal_power_up_phy(hw); | |
1802 | err = pch_gbe_up(adapter); | |
1803 | if (err) | |
1804 | goto err_up; | |
1805 | pr_debug("Success End\n"); | |
1806 | return 0; | |
1807 | ||
1808 | err_up: | |
1809 | if (!adapter->wake_up_evt) | |
1810 | pch_gbe_hal_power_down_phy(hw); | |
1811 | pch_gbe_free_rx_resources(adapter, adapter->rx_ring); | |
1812 | err_setup_rx: | |
1813 | pch_gbe_free_tx_resources(adapter, adapter->tx_ring); | |
1814 | err_setup_tx: | |
1815 | pch_gbe_reset(adapter); | |
1816 | pr_err("Error End\n"); | |
1817 | return err; | |
1818 | } | |
1819 | ||
1820 | /** | |
1821 | * pch_gbe_stop - Disables a network interface | |
1822 | * @netdev: Network interface device structure | |
1823 | * Returns | |
1824 | * 0: Successfully | |
1825 | */ | |
1826 | static int pch_gbe_stop(struct net_device *netdev) | |
1827 | { | |
1828 | struct pch_gbe_adapter *adapter = netdev_priv(netdev); | |
1829 | struct pch_gbe_hw *hw = &adapter->hw; | |
1830 | ||
1831 | pch_gbe_down(adapter); | |
1832 | if (!adapter->wake_up_evt) | |
1833 | pch_gbe_hal_power_down_phy(hw); | |
1834 | pch_gbe_free_tx_resources(adapter, adapter->tx_ring); | |
1835 | pch_gbe_free_rx_resources(adapter, adapter->rx_ring); | |
1836 | return 0; | |
1837 | } | |
1838 | ||
1839 | /** | |
1840 | * pch_gbe_xmit_frame - Packet transmitting start | |
1841 | * @skb: Socket buffer structure | |
1842 | * @netdev: Network interface device structure | |
1843 | * Returns | |
1844 | * - NETDEV_TX_OK: Normal end | |
1845 | * - NETDEV_TX_BUSY: Error end | |
1846 | */ | |
1847 | static int pch_gbe_xmit_frame(struct sk_buff *skb, struct net_device *netdev) | |
1848 | { | |
1849 | struct pch_gbe_adapter *adapter = netdev_priv(netdev); | |
1850 | struct pch_gbe_tx_ring *tx_ring = adapter->tx_ring; | |
1851 | unsigned long flags; | |
1852 | ||
1853 | if (unlikely(skb->len > (adapter->hw.mac.max_frame_size - 4))) { | |
77555ee7 MO |
1854 | pr_err("Transfer length Error: skb len: %d > max: %d\n", |
1855 | skb->len, adapter->hw.mac.max_frame_size); | |
419c2046 | 1856 | dev_kfree_skb_any(skb); |
77555ee7 MO |
1857 | adapter->stats.tx_length_errors++; |
1858 | return NETDEV_TX_OK; | |
1859 | } | |
1860 | if (!spin_trylock_irqsave(&tx_ring->tx_lock, flags)) { | |
1861 | /* Collision - tell upper layer to requeue */ | |
1862 | return NETDEV_TX_LOCKED; | |
1863 | } | |
1864 | if (unlikely(!PCH_GBE_DESC_UNUSED(tx_ring))) { | |
1865 | netif_stop_queue(netdev); | |
1866 | spin_unlock_irqrestore(&tx_ring->tx_lock, flags); | |
1867 | pr_debug("Return : BUSY next_to use : 0x%08x next_to clean : 0x%08x\n", | |
1868 | tx_ring->next_to_use, tx_ring->next_to_clean); | |
1869 | return NETDEV_TX_BUSY; | |
1870 | } | |
1871 | spin_unlock_irqrestore(&tx_ring->tx_lock, flags); | |
1872 | ||
1873 | /* CRC,ITAG no support */ | |
1874 | pch_gbe_tx_queue(adapter, tx_ring, skb); | |
1875 | return NETDEV_TX_OK; | |
1876 | } | |
1877 | ||
1878 | /** | |
1879 | * pch_gbe_get_stats - Get System Network Statistics | |
1880 | * @netdev: Network interface device structure | |
1881 | * Returns: The current stats | |
1882 | */ | |
1883 | static struct net_device_stats *pch_gbe_get_stats(struct net_device *netdev) | |
1884 | { | |
1885 | /* only return the current stats */ | |
1886 | return &netdev->stats; | |
1887 | } | |
1888 | ||
1889 | /** | |
1890 | * pch_gbe_set_multi - Multicast and Promiscuous mode set | |
1891 | * @netdev: Network interface device structure | |
1892 | */ | |
1893 | static void pch_gbe_set_multi(struct net_device *netdev) | |
1894 | { | |
1895 | struct pch_gbe_adapter *adapter = netdev_priv(netdev); | |
1896 | struct pch_gbe_hw *hw = &adapter->hw; | |
1897 | struct netdev_hw_addr *ha; | |
1898 | u8 *mta_list; | |
1899 | u32 rctl; | |
1900 | int i; | |
1901 | int mc_count; | |
1902 | ||
1903 | pr_debug("netdev->flags : 0x%08x\n", netdev->flags); | |
1904 | ||
1905 | /* Check for Promiscuous and All Multicast modes */ | |
1906 | rctl = ioread32(&hw->reg->RX_MODE); | |
1907 | mc_count = netdev_mc_count(netdev); | |
1908 | if ((netdev->flags & IFF_PROMISC)) { | |
1909 | rctl &= ~PCH_GBE_ADD_FIL_EN; | |
1910 | rctl &= ~PCH_GBE_MLT_FIL_EN; | |
1911 | } else if ((netdev->flags & IFF_ALLMULTI)) { | |
1912 | /* all the multicasting receive permissions */ | |
1913 | rctl |= PCH_GBE_ADD_FIL_EN; | |
1914 | rctl &= ~PCH_GBE_MLT_FIL_EN; | |
1915 | } else { | |
1916 | if (mc_count >= PCH_GBE_MAR_ENTRIES) { | |
1917 | /* all the multicasting receive permissions */ | |
1918 | rctl |= PCH_GBE_ADD_FIL_EN; | |
1919 | rctl &= ~PCH_GBE_MLT_FIL_EN; | |
1920 | } else { | |
1921 | rctl |= (PCH_GBE_ADD_FIL_EN | PCH_GBE_MLT_FIL_EN); | |
1922 | } | |
1923 | } | |
1924 | iowrite32(rctl, &hw->reg->RX_MODE); | |
1925 | ||
1926 | if (mc_count >= PCH_GBE_MAR_ENTRIES) | |
1927 | return; | |
1928 | mta_list = kmalloc(mc_count * ETH_ALEN, GFP_ATOMIC); | |
1929 | if (!mta_list) | |
1930 | return; | |
1931 | ||
1932 | /* The shared function expects a packed array of only addresses. */ | |
1933 | i = 0; | |
1934 | netdev_for_each_mc_addr(ha, netdev) { | |
1935 | if (i == mc_count) | |
1936 | break; | |
1937 | memcpy(mta_list + (i++ * ETH_ALEN), &ha->addr, ETH_ALEN); | |
1938 | } | |
1939 | pch_gbe_mac_mc_addr_list_update(hw, mta_list, i, 1, | |
1940 | PCH_GBE_MAR_ENTRIES); | |
1941 | kfree(mta_list); | |
1942 | ||
1943 | pr_debug("RX_MODE reg(check bit31,30 ADD,MLT) : 0x%08x netdev->mc_count : 0x%08x\n", | |
1944 | ioread32(&hw->reg->RX_MODE), mc_count); | |
1945 | } | |
1946 | ||
1947 | /** | |
1948 | * pch_gbe_set_mac - Change the Ethernet Address of the NIC | |
1949 | * @netdev: Network interface device structure | |
1950 | * @addr: Pointer to an address structure | |
1951 | * Returns | |
1952 | * 0: Successfully | |
1953 | * -EADDRNOTAVAIL: Failed | |
1954 | */ | |
1955 | static int pch_gbe_set_mac(struct net_device *netdev, void *addr) | |
1956 | { | |
1957 | struct pch_gbe_adapter *adapter = netdev_priv(netdev); | |
1958 | struct sockaddr *skaddr = addr; | |
1959 | int ret_val; | |
1960 | ||
1961 | if (!is_valid_ether_addr(skaddr->sa_data)) { | |
1962 | ret_val = -EADDRNOTAVAIL; | |
1963 | } else { | |
1964 | memcpy(netdev->dev_addr, skaddr->sa_data, netdev->addr_len); | |
1965 | memcpy(adapter->hw.mac.addr, skaddr->sa_data, netdev->addr_len); | |
1966 | pch_gbe_mac_mar_set(&adapter->hw, adapter->hw.mac.addr, 0); | |
1967 | ret_val = 0; | |
1968 | } | |
1969 | pr_debug("ret_val : 0x%08x\n", ret_val); | |
1970 | pr_debug("dev_addr : %pM\n", netdev->dev_addr); | |
1971 | pr_debug("mac_addr : %pM\n", adapter->hw.mac.addr); | |
1972 | pr_debug("MAC_ADR1AB reg : 0x%08x 0x%08x\n", | |
1973 | ioread32(&adapter->hw.reg->mac_adr[0].high), | |
1974 | ioread32(&adapter->hw.reg->mac_adr[0].low)); | |
1975 | return ret_val; | |
1976 | } | |
1977 | ||
1978 | /** | |
1979 | * pch_gbe_change_mtu - Change the Maximum Transfer Unit | |
1980 | * @netdev: Network interface device structure | |
1981 | * @new_mtu: New value for maximum frame size | |
1982 | * Returns | |
1983 | * 0: Successfully | |
1984 | * -EINVAL: Failed | |
1985 | */ | |
1986 | static int pch_gbe_change_mtu(struct net_device *netdev, int new_mtu) | |
1987 | { | |
1988 | struct pch_gbe_adapter *adapter = netdev_priv(netdev); | |
1989 | int max_frame; | |
1990 | ||
1991 | max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN; | |
1992 | if ((max_frame < ETH_ZLEN + ETH_FCS_LEN) || | |
1993 | (max_frame > PCH_GBE_MAX_JUMBO_FRAME_SIZE)) { | |
1994 | pr_err("Invalid MTU setting\n"); | |
1995 | return -EINVAL; | |
1996 | } | |
1997 | if (max_frame <= PCH_GBE_FRAME_SIZE_2048) | |
1998 | adapter->rx_buffer_len = PCH_GBE_FRAME_SIZE_2048; | |
1999 | else if (max_frame <= PCH_GBE_FRAME_SIZE_4096) | |
2000 | adapter->rx_buffer_len = PCH_GBE_FRAME_SIZE_4096; | |
2001 | else if (max_frame <= PCH_GBE_FRAME_SIZE_8192) | |
2002 | adapter->rx_buffer_len = PCH_GBE_FRAME_SIZE_8192; | |
2003 | else | |
2004 | adapter->rx_buffer_len = PCH_GBE_MAX_JUMBO_FRAME_SIZE; | |
2005 | netdev->mtu = new_mtu; | |
2006 | adapter->hw.mac.max_frame_size = max_frame; | |
2007 | ||
2008 | if (netif_running(netdev)) | |
2009 | pch_gbe_reinit_locked(adapter); | |
2010 | else | |
2011 | pch_gbe_reset(adapter); | |
2012 | ||
2013 | pr_debug("max_frame : %d rx_buffer_len : %d mtu : %d max_frame_size : %d\n", | |
2014 | max_frame, (u32) adapter->rx_buffer_len, netdev->mtu, | |
2015 | adapter->hw.mac.max_frame_size); | |
2016 | return 0; | |
2017 | } | |
2018 | ||
2019 | /** | |
2020 | * pch_gbe_ioctl - Controls register through a MII interface | |
2021 | * @netdev: Network interface device structure | |
2022 | * @ifr: Pointer to ifr structure | |
2023 | * @cmd: Control command | |
2024 | * Returns | |
2025 | * 0: Successfully | |
2026 | * Negative value: Failed | |
2027 | */ | |
2028 | static int pch_gbe_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) | |
2029 | { | |
2030 | struct pch_gbe_adapter *adapter = netdev_priv(netdev); | |
2031 | ||
2032 | pr_debug("cmd : 0x%04x\n", cmd); | |
2033 | ||
2034 | return generic_mii_ioctl(&adapter->mii, if_mii(ifr), cmd, NULL); | |
2035 | } | |
2036 | ||
2037 | /** | |
2038 | * pch_gbe_tx_timeout - Respond to a Tx Hang | |
2039 | * @netdev: Network interface device structure | |
2040 | */ | |
2041 | static void pch_gbe_tx_timeout(struct net_device *netdev) | |
2042 | { | |
2043 | struct pch_gbe_adapter *adapter = netdev_priv(netdev); | |
2044 | ||
2045 | /* Do the reset outside of interrupt context */ | |
2046 | adapter->stats.tx_timeout_count++; | |
2047 | schedule_work(&adapter->reset_task); | |
2048 | } | |
2049 | ||
2050 | /** | |
2051 | * pch_gbe_napi_poll - NAPI receive and transfer polling callback | |
2052 | * @napi: Pointer of polling device struct | |
2053 | * @budget: The maximum number of a packet | |
2054 | * Returns | |
2055 | * false: Exit the polling mode | |
2056 | * true: Continue the polling mode | |
2057 | */ | |
2058 | static int pch_gbe_napi_poll(struct napi_struct *napi, int budget) | |
2059 | { | |
2060 | struct pch_gbe_adapter *adapter = | |
2061 | container_of(napi, struct pch_gbe_adapter, napi); | |
2062 | struct net_device *netdev = adapter->netdev; | |
2063 | int work_done = 0; | |
2064 | bool poll_end_flag = false; | |
2065 | bool cleaned = false; | |
2066 | ||
2067 | pr_debug("budget : %d\n", budget); | |
2068 | ||
2069 | /* Keep link state information with original netdev */ | |
2070 | if (!netif_carrier_ok(netdev)) { | |
2071 | poll_end_flag = true; | |
2072 | } else { | |
2073 | cleaned = pch_gbe_clean_tx(adapter, adapter->tx_ring); | |
2074 | pch_gbe_clean_rx(adapter, adapter->rx_ring, &work_done, budget); | |
2075 | ||
2076 | if (cleaned) | |
2077 | work_done = budget; | |
2078 | /* If no Tx and not enough Rx work done, | |
2079 | * exit the polling mode | |
2080 | */ | |
2081 | if ((work_done < budget) || !netif_running(netdev)) | |
2082 | poll_end_flag = true; | |
2083 | } | |
2084 | ||
2085 | if (poll_end_flag) { | |
2086 | napi_complete(napi); | |
2087 | pch_gbe_irq_enable(adapter); | |
2088 | } | |
2089 | ||
2090 | pr_debug("poll_end_flag : %d work_done : %d budget : %d\n", | |
2091 | poll_end_flag, work_done, budget); | |
2092 | ||
2093 | return work_done; | |
2094 | } | |
2095 | ||
2096 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
2097 | /** | |
2098 | * pch_gbe_netpoll - Used by things like netconsole to send skbs | |
2099 | * @netdev: Network interface device structure | |
2100 | */ | |
2101 | static void pch_gbe_netpoll(struct net_device *netdev) | |
2102 | { | |
2103 | struct pch_gbe_adapter *adapter = netdev_priv(netdev); | |
2104 | ||
2105 | disable_irq(adapter->pdev->irq); | |
2106 | pch_gbe_intr(adapter->pdev->irq, netdev); | |
2107 | enable_irq(adapter->pdev->irq); | |
2108 | } | |
2109 | #endif | |
2110 | ||
2111 | static const struct net_device_ops pch_gbe_netdev_ops = { | |
2112 | .ndo_open = pch_gbe_open, | |
2113 | .ndo_stop = pch_gbe_stop, | |
2114 | .ndo_start_xmit = pch_gbe_xmit_frame, | |
2115 | .ndo_get_stats = pch_gbe_get_stats, | |
2116 | .ndo_set_mac_address = pch_gbe_set_mac, | |
2117 | .ndo_tx_timeout = pch_gbe_tx_timeout, | |
2118 | .ndo_change_mtu = pch_gbe_change_mtu, | |
2119 | .ndo_do_ioctl = pch_gbe_ioctl, | |
2120 | .ndo_set_multicast_list = &pch_gbe_set_multi, | |
2121 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
2122 | .ndo_poll_controller = pch_gbe_netpoll, | |
2123 | #endif | |
2124 | }; | |
2125 | ||
2126 | static pci_ers_result_t pch_gbe_io_error_detected(struct pci_dev *pdev, | |
2127 | pci_channel_state_t state) | |
2128 | { | |
2129 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2130 | struct pch_gbe_adapter *adapter = netdev_priv(netdev); | |
2131 | ||
2132 | netif_device_detach(netdev); | |
2133 | if (netif_running(netdev)) | |
2134 | pch_gbe_down(adapter); | |
2135 | pci_disable_device(pdev); | |
2136 | /* Request a slot slot reset. */ | |
2137 | return PCI_ERS_RESULT_NEED_RESET; | |
2138 | } | |
2139 | ||
2140 | static pci_ers_result_t pch_gbe_io_slot_reset(struct pci_dev *pdev) | |
2141 | { | |
2142 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2143 | struct pch_gbe_adapter *adapter = netdev_priv(netdev); | |
2144 | struct pch_gbe_hw *hw = &adapter->hw; | |
2145 | ||
2146 | if (pci_enable_device(pdev)) { | |
2147 | pr_err("Cannot re-enable PCI device after reset\n"); | |
2148 | return PCI_ERS_RESULT_DISCONNECT; | |
2149 | } | |
2150 | pci_set_master(pdev); | |
2151 | pci_enable_wake(pdev, PCI_D0, 0); | |
2152 | pch_gbe_hal_power_up_phy(hw); | |
2153 | pch_gbe_reset(adapter); | |
2154 | /* Clear wake up status */ | |
2155 | pch_gbe_mac_set_wol_event(hw, 0); | |
2156 | ||
2157 | return PCI_ERS_RESULT_RECOVERED; | |
2158 | } | |
2159 | ||
2160 | static void pch_gbe_io_resume(struct pci_dev *pdev) | |
2161 | { | |
2162 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2163 | struct pch_gbe_adapter *adapter = netdev_priv(netdev); | |
2164 | ||
2165 | if (netif_running(netdev)) { | |
2166 | if (pch_gbe_up(adapter)) { | |
2167 | pr_debug("can't bring device back up after reset\n"); | |
2168 | return; | |
2169 | } | |
2170 | } | |
2171 | netif_device_attach(netdev); | |
2172 | } | |
2173 | ||
2174 | static int __pch_gbe_suspend(struct pci_dev *pdev) | |
2175 | { | |
2176 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2177 | struct pch_gbe_adapter *adapter = netdev_priv(netdev); | |
2178 | struct pch_gbe_hw *hw = &adapter->hw; | |
2179 | u32 wufc = adapter->wake_up_evt; | |
2180 | int retval = 0; | |
2181 | ||
2182 | netif_device_detach(netdev); | |
2183 | if (netif_running(netdev)) | |
2184 | pch_gbe_down(adapter); | |
2185 | if (wufc) { | |
2186 | pch_gbe_set_multi(netdev); | |
2187 | pch_gbe_setup_rctl(adapter); | |
2188 | pch_gbe_configure_rx(adapter); | |
2189 | pch_gbe_set_rgmii_ctrl(adapter, hw->mac.link_speed, | |
2190 | hw->mac.link_duplex); | |
2191 | pch_gbe_set_mode(adapter, hw->mac.link_speed, | |
2192 | hw->mac.link_duplex); | |
2193 | pch_gbe_mac_set_wol_event(hw, wufc); | |
2194 | pci_disable_device(pdev); | |
2195 | } else { | |
2196 | pch_gbe_hal_power_down_phy(hw); | |
2197 | pch_gbe_mac_set_wol_event(hw, wufc); | |
2198 | pci_disable_device(pdev); | |
2199 | } | |
2200 | return retval; | |
2201 | } | |
2202 | ||
2203 | #ifdef CONFIG_PM | |
2204 | static int pch_gbe_suspend(struct device *device) | |
2205 | { | |
2206 | struct pci_dev *pdev = to_pci_dev(device); | |
2207 | ||
2208 | return __pch_gbe_suspend(pdev); | |
2209 | } | |
2210 | ||
2211 | static int pch_gbe_resume(struct device *device) | |
2212 | { | |
2213 | struct pci_dev *pdev = to_pci_dev(device); | |
2214 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2215 | struct pch_gbe_adapter *adapter = netdev_priv(netdev); | |
2216 | struct pch_gbe_hw *hw = &adapter->hw; | |
2217 | u32 err; | |
2218 | ||
2219 | err = pci_enable_device(pdev); | |
2220 | if (err) { | |
2221 | pr_err("Cannot enable PCI device from suspend\n"); | |
2222 | return err; | |
2223 | } | |
2224 | pci_set_master(pdev); | |
2225 | pch_gbe_hal_power_up_phy(hw); | |
2226 | pch_gbe_reset(adapter); | |
2227 | /* Clear wake on lan control and status */ | |
2228 | pch_gbe_mac_set_wol_event(hw, 0); | |
2229 | ||
2230 | if (netif_running(netdev)) | |
2231 | pch_gbe_up(adapter); | |
2232 | netif_device_attach(netdev); | |
2233 | ||
2234 | return 0; | |
2235 | } | |
2236 | #endif /* CONFIG_PM */ | |
2237 | ||
2238 | static void pch_gbe_shutdown(struct pci_dev *pdev) | |
2239 | { | |
2240 | __pch_gbe_suspend(pdev); | |
2241 | if (system_state == SYSTEM_POWER_OFF) { | |
2242 | pci_wake_from_d3(pdev, true); | |
2243 | pci_set_power_state(pdev, PCI_D3hot); | |
2244 | } | |
2245 | } | |
2246 | ||
2247 | static void pch_gbe_remove(struct pci_dev *pdev) | |
2248 | { | |
2249 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2250 | struct pch_gbe_adapter *adapter = netdev_priv(netdev); | |
2251 | ||
2252 | flush_scheduled_work(); | |
2253 | unregister_netdev(netdev); | |
2254 | ||
2255 | pch_gbe_hal_phy_hw_reset(&adapter->hw); | |
2256 | ||
2257 | kfree(adapter->tx_ring); | |
2258 | kfree(adapter->rx_ring); | |
2259 | ||
2260 | iounmap(adapter->hw.reg); | |
2261 | pci_release_regions(pdev); | |
2262 | free_netdev(netdev); | |
2263 | pci_disable_device(pdev); | |
2264 | } | |
2265 | ||
2266 | static int pch_gbe_probe(struct pci_dev *pdev, | |
2267 | const struct pci_device_id *pci_id) | |
2268 | { | |
2269 | struct net_device *netdev; | |
2270 | struct pch_gbe_adapter *adapter; | |
2271 | int ret; | |
2272 | ||
2273 | ret = pci_enable_device(pdev); | |
2274 | if (ret) | |
2275 | return ret; | |
2276 | ||
2277 | if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) | |
2278 | || pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64))) { | |
2279 | ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); | |
2280 | if (ret) { | |
2281 | ret = pci_set_consistent_dma_mask(pdev, | |
2282 | DMA_BIT_MASK(32)); | |
2283 | if (ret) { | |
2284 | dev_err(&pdev->dev, "ERR: No usable DMA " | |
2285 | "configuration, aborting\n"); | |
2286 | goto err_disable_device; | |
2287 | } | |
2288 | } | |
2289 | } | |
2290 | ||
2291 | ret = pci_request_regions(pdev, KBUILD_MODNAME); | |
2292 | if (ret) { | |
2293 | dev_err(&pdev->dev, | |
2294 | "ERR: Can't reserve PCI I/O and memory resources\n"); | |
2295 | goto err_disable_device; | |
2296 | } | |
2297 | pci_set_master(pdev); | |
2298 | ||
2299 | netdev = alloc_etherdev((int)sizeof(struct pch_gbe_adapter)); | |
2300 | if (!netdev) { | |
2301 | ret = -ENOMEM; | |
2302 | dev_err(&pdev->dev, | |
2303 | "ERR: Can't allocate and set up an Ethernet device\n"); | |
2304 | goto err_release_pci; | |
2305 | } | |
2306 | SET_NETDEV_DEV(netdev, &pdev->dev); | |
2307 | ||
2308 | pci_set_drvdata(pdev, netdev); | |
2309 | adapter = netdev_priv(netdev); | |
2310 | adapter->netdev = netdev; | |
2311 | adapter->pdev = pdev; | |
2312 | adapter->hw.back = adapter; | |
2313 | adapter->hw.reg = pci_iomap(pdev, PCH_GBE_PCI_BAR, 0); | |
2314 | if (!adapter->hw.reg) { | |
2315 | ret = -EIO; | |
2316 | dev_err(&pdev->dev, "Can't ioremap\n"); | |
2317 | goto err_free_netdev; | |
2318 | } | |
2319 | ||
2320 | netdev->netdev_ops = &pch_gbe_netdev_ops; | |
2321 | netdev->watchdog_timeo = PCH_GBE_WATCHDOG_PERIOD; | |
2322 | netif_napi_add(netdev, &adapter->napi, | |
2323 | pch_gbe_napi_poll, PCH_GBE_RX_WEIGHT); | |
2324 | netdev->features = NETIF_F_HW_CSUM | NETIF_F_GRO; | |
2325 | pch_gbe_set_ethtool_ops(netdev); | |
2326 | ||
2327 | pch_gbe_mac_reset_hw(&adapter->hw); | |
2328 | ||
2329 | /* setup the private structure */ | |
2330 | ret = pch_gbe_sw_init(adapter); | |
2331 | if (ret) | |
2332 | goto err_iounmap; | |
2333 | ||
2334 | /* Initialize PHY */ | |
2335 | ret = pch_gbe_init_phy(adapter); | |
2336 | if (ret) { | |
2337 | dev_err(&pdev->dev, "PHY initialize error\n"); | |
2338 | goto err_free_adapter; | |
2339 | } | |
2340 | pch_gbe_hal_get_bus_info(&adapter->hw); | |
2341 | ||
2342 | /* Read the MAC address. and store to the private data */ | |
2343 | ret = pch_gbe_hal_read_mac_addr(&adapter->hw); | |
2344 | if (ret) { | |
2345 | dev_err(&pdev->dev, "MAC address Read Error\n"); | |
2346 | goto err_free_adapter; | |
2347 | } | |
2348 | ||
2349 | memcpy(netdev->dev_addr, adapter->hw.mac.addr, netdev->addr_len); | |
2350 | if (!is_valid_ether_addr(netdev->dev_addr)) { | |
2351 | dev_err(&pdev->dev, "Invalid MAC Address\n"); | |
2352 | ret = -EIO; | |
2353 | goto err_free_adapter; | |
2354 | } | |
2355 | setup_timer(&adapter->watchdog_timer, pch_gbe_watchdog, | |
2356 | (unsigned long)adapter); | |
2357 | ||
2358 | INIT_WORK(&adapter->reset_task, pch_gbe_reset_task); | |
2359 | ||
2360 | pch_gbe_check_options(adapter); | |
2361 | ||
2362 | if (adapter->tx_csum) | |
2363 | netdev->features |= NETIF_F_HW_CSUM; | |
2364 | else | |
2365 | netdev->features &= ~NETIF_F_HW_CSUM; | |
2366 | ||
2367 | /* initialize the wol settings based on the eeprom settings */ | |
2368 | adapter->wake_up_evt = PCH_GBE_WL_INIT_SETTING; | |
2369 | dev_info(&pdev->dev, "MAC address : %pM\n", netdev->dev_addr); | |
2370 | ||
2371 | /* reset the hardware with the new settings */ | |
2372 | pch_gbe_reset(adapter); | |
2373 | ||
2374 | ret = register_netdev(netdev); | |
2375 | if (ret) | |
2376 | goto err_free_adapter; | |
2377 | /* tell the stack to leave us alone until pch_gbe_open() is called */ | |
2378 | netif_carrier_off(netdev); | |
2379 | netif_stop_queue(netdev); | |
2380 | ||
2381 | dev_dbg(&pdev->dev, "OKIsemi(R) PCH Network Connection\n"); | |
2382 | ||
2383 | device_set_wakeup_enable(&pdev->dev, 1); | |
2384 | return 0; | |
2385 | ||
2386 | err_free_adapter: | |
2387 | pch_gbe_hal_phy_hw_reset(&adapter->hw); | |
2388 | kfree(adapter->tx_ring); | |
2389 | kfree(adapter->rx_ring); | |
2390 | err_iounmap: | |
2391 | iounmap(adapter->hw.reg); | |
2392 | err_free_netdev: | |
2393 | free_netdev(netdev); | |
2394 | err_release_pci: | |
2395 | pci_release_regions(pdev); | |
2396 | err_disable_device: | |
2397 | pci_disable_device(pdev); | |
2398 | return ret; | |
2399 | } | |
2400 | ||
7fc44633 | 2401 | static DEFINE_PCI_DEVICE_TABLE(pch_gbe_pcidev_id) = { |
77555ee7 MO |
2402 | {.vendor = PCI_VENDOR_ID_INTEL, |
2403 | .device = PCI_DEVICE_ID_INTEL_IOH1_GBE, | |
2404 | .subvendor = PCI_ANY_ID, | |
2405 | .subdevice = PCI_ANY_ID, | |
2406 | .class = (PCI_CLASS_NETWORK_ETHERNET << 8), | |
2407 | .class_mask = (0xFFFF00) | |
2408 | }, | |
2409 | /* required last entry */ | |
2410 | {0} | |
2411 | }; | |
2412 | ||
2413 | #ifdef CONFIG_PM | |
2414 | static const struct dev_pm_ops pch_gbe_pm_ops = { | |
2415 | .suspend = pch_gbe_suspend, | |
2416 | .resume = pch_gbe_resume, | |
2417 | .freeze = pch_gbe_suspend, | |
2418 | .thaw = pch_gbe_resume, | |
2419 | .poweroff = pch_gbe_suspend, | |
2420 | .restore = pch_gbe_resume, | |
2421 | }; | |
2422 | #endif | |
2423 | ||
2424 | static struct pci_error_handlers pch_gbe_err_handler = { | |
2425 | .error_detected = pch_gbe_io_error_detected, | |
2426 | .slot_reset = pch_gbe_io_slot_reset, | |
2427 | .resume = pch_gbe_io_resume | |
2428 | }; | |
2429 | ||
2430 | static struct pci_driver pch_gbe_pcidev = { | |
2431 | .name = KBUILD_MODNAME, | |
2432 | .id_table = pch_gbe_pcidev_id, | |
2433 | .probe = pch_gbe_probe, | |
2434 | .remove = pch_gbe_remove, | |
2435 | #ifdef CONFIG_PM_OPS | |
2436 | .driver.pm = &pch_gbe_pm_ops, | |
2437 | #endif | |
2438 | .shutdown = pch_gbe_shutdown, | |
2439 | .err_handler = &pch_gbe_err_handler | |
2440 | }; | |
2441 | ||
2442 | ||
2443 | static int __init pch_gbe_init_module(void) | |
2444 | { | |
2445 | int ret; | |
2446 | ||
2447 | ret = pci_register_driver(&pch_gbe_pcidev); | |
2448 | if (copybreak != PCH_GBE_COPYBREAK_DEFAULT) { | |
2449 | if (copybreak == 0) { | |
2450 | pr_info("copybreak disabled\n"); | |
2451 | } else { | |
2452 | pr_info("copybreak enabled for packets <= %u bytes\n", | |
2453 | copybreak); | |
2454 | } | |
2455 | } | |
2456 | return ret; | |
2457 | } | |
2458 | ||
2459 | static void __exit pch_gbe_exit_module(void) | |
2460 | { | |
2461 | pci_unregister_driver(&pch_gbe_pcidev); | |
2462 | } | |
2463 | ||
2464 | module_init(pch_gbe_init_module); | |
2465 | module_exit(pch_gbe_exit_module); | |
2466 | ||
2467 | MODULE_DESCRIPTION("OKI semiconductor PCH Gigabit ethernet Driver"); | |
2468 | MODULE_AUTHOR("OKI semiconductor, <masa-korg@dsn.okisemi.com>"); | |
2469 | MODULE_LICENSE("GPL"); | |
2470 | MODULE_VERSION(DRV_VERSION); | |
2471 | MODULE_DEVICE_TABLE(pci, pch_gbe_pcidev_id); | |
2472 | ||
2473 | module_param(copybreak, uint, 0644); | |
2474 | MODULE_PARM_DESC(copybreak, | |
2475 | "Maximum size of packet that is copied to a new buffer on receive"); | |
2476 | ||
2477 | /* pch_gbe_main.c */ |