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77555ee7 MO |
1 | /* |
2 | * Copyright (C) 1999 - 2010 Intel Corporation. | |
a1dcfcb7 | 3 | * Copyright (C) 2010 OKI SEMICONDUCTOR CO., LTD. |
77555ee7 MO |
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 | |
ac096642 | 32 | #define PCH_GBE_DMA_PADDING 2 |
77555ee7 MO |
33 | #define PCH_GBE_WATCHDOG_PERIOD (1 * HZ) /* watchdog time */ |
34 | #define PCH_GBE_COPYBREAK_DEFAULT 256 | |
35 | #define PCH_GBE_PCI_BAR 1 | |
124d770a | 36 | #define PCH_GBE_RESERVE_MEMORY 0x200000 /* 2MB */ |
77555ee7 | 37 | |
b0e6baf5 T |
38 | /* Macros for ML7223 */ |
39 | #define PCI_VENDOR_ID_ROHM 0x10db | |
40 | #define PCI_DEVICE_ID_ROHM_ML7223_GBE 0x8013 | |
41 | ||
77555ee7 MO |
42 | #define PCH_GBE_TX_WEIGHT 64 |
43 | #define PCH_GBE_RX_WEIGHT 64 | |
44 | #define PCH_GBE_RX_BUFFER_WRITE 16 | |
45 | ||
46 | /* Initialize the wake-on-LAN settings */ | |
47 | #define PCH_GBE_WL_INIT_SETTING (PCH_GBE_WLC_MP) | |
48 | ||
49 | #define PCH_GBE_MAC_RGMII_CTRL_SETTING ( \ | |
50 | PCH_GBE_CHIP_TYPE_INTERNAL | \ | |
ce3dad0f | 51 | PCH_GBE_RGMII_MODE_RGMII \ |
77555ee7 MO |
52 | ) |
53 | ||
54 | /* Ethertype field values */ | |
124d770a | 55 | #define PCH_GBE_MAX_RX_BUFFER_SIZE 0x2880 |
77555ee7 MO |
56 | #define PCH_GBE_MAX_JUMBO_FRAME_SIZE 10318 |
57 | #define PCH_GBE_FRAME_SIZE_2048 2048 | |
58 | #define PCH_GBE_FRAME_SIZE_4096 4096 | |
59 | #define PCH_GBE_FRAME_SIZE_8192 8192 | |
60 | ||
61 | #define PCH_GBE_GET_DESC(R, i, type) (&(((struct type *)((R).desc))[i])) | |
62 | #define PCH_GBE_RX_DESC(R, i) PCH_GBE_GET_DESC(R, i, pch_gbe_rx_desc) | |
63 | #define PCH_GBE_TX_DESC(R, i) PCH_GBE_GET_DESC(R, i, pch_gbe_tx_desc) | |
64 | #define PCH_GBE_DESC_UNUSED(R) \ | |
65 | ((((R)->next_to_clean > (R)->next_to_use) ? 0 : (R)->count) + \ | |
66 | (R)->next_to_clean - (R)->next_to_use - 1) | |
67 | ||
68 | /* Pause packet value */ | |
69 | #define PCH_GBE_PAUSE_PKT1_VALUE 0x00C28001 | |
70 | #define PCH_GBE_PAUSE_PKT2_VALUE 0x00000100 | |
71 | #define PCH_GBE_PAUSE_PKT4_VALUE 0x01000888 | |
72 | #define PCH_GBE_PAUSE_PKT5_VALUE 0x0000FFFF | |
73 | ||
74 | #define PCH_GBE_ETH_ALEN 6 | |
75 | ||
76 | /* This defines the bits that are set in the Interrupt Mask | |
77 | * Set/Read Register. Each bit is documented below: | |
78 | * o RXT0 = Receiver Timer Interrupt (ring 0) | |
79 | * o TXDW = Transmit Descriptor Written Back | |
80 | * o RXDMT0 = Receive Descriptor Minimum Threshold hit (ring 0) | |
81 | * o RXSEQ = Receive Sequence Error | |
82 | * o LSC = Link Status Change | |
83 | */ | |
84 | #define PCH_GBE_INT_ENABLE_MASK ( \ | |
85 | PCH_GBE_INT_RX_DMA_CMPLT | \ | |
86 | PCH_GBE_INT_RX_DSC_EMP | \ | |
124d770a | 87 | PCH_GBE_INT_RX_FIFO_ERR | \ |
77555ee7 MO |
88 | PCH_GBE_INT_WOL_DET | \ |
89 | PCH_GBE_INT_TX_CMPLT \ | |
90 | ) | |
91 | ||
124d770a | 92 | #define PCH_GBE_INT_DISABLE_ALL 0 |
77555ee7 MO |
93 | |
94 | static unsigned int copybreak __read_mostly = PCH_GBE_COPYBREAK_DEFAULT; | |
95 | ||
191cc687 | 96 | static int pch_gbe_mdio_read(struct net_device *netdev, int addr, int reg); |
97 | static void pch_gbe_mdio_write(struct net_device *netdev, int addr, int reg, | |
98 | int data); | |
98200ec2 TO |
99 | |
100 | inline void pch_gbe_mac_load_mac_addr(struct pch_gbe_hw *hw) | |
101 | { | |
102 | iowrite32(0x01, &hw->reg->MAC_ADDR_LOAD); | |
103 | } | |
104 | ||
77555ee7 MO |
105 | /** |
106 | * pch_gbe_mac_read_mac_addr - Read MAC address | |
107 | * @hw: Pointer to the HW structure | |
108 | * Returns | |
109 | * 0: Successful. | |
110 | */ | |
111 | s32 pch_gbe_mac_read_mac_addr(struct pch_gbe_hw *hw) | |
112 | { | |
113 | u32 adr1a, adr1b; | |
114 | ||
115 | adr1a = ioread32(&hw->reg->mac_adr[0].high); | |
116 | adr1b = ioread32(&hw->reg->mac_adr[0].low); | |
117 | ||
118 | hw->mac.addr[0] = (u8)(adr1a & 0xFF); | |
119 | hw->mac.addr[1] = (u8)((adr1a >> 8) & 0xFF); | |
120 | hw->mac.addr[2] = (u8)((adr1a >> 16) & 0xFF); | |
121 | hw->mac.addr[3] = (u8)((adr1a >> 24) & 0xFF); | |
122 | hw->mac.addr[4] = (u8)(adr1b & 0xFF); | |
123 | hw->mac.addr[5] = (u8)((adr1b >> 8) & 0xFF); | |
124 | ||
125 | pr_debug("hw->mac.addr : %pM\n", hw->mac.addr); | |
126 | return 0; | |
127 | } | |
128 | ||
129 | /** | |
130 | * pch_gbe_wait_clr_bit - Wait to clear a bit | |
131 | * @reg: Pointer of register | |
132 | * @busy: Busy bit | |
133 | */ | |
191cc687 | 134 | static void pch_gbe_wait_clr_bit(void *reg, u32 bit) |
77555ee7 MO |
135 | { |
136 | u32 tmp; | |
137 | /* wait busy */ | |
138 | tmp = 1000; | |
139 | while ((ioread32(reg) & bit) && --tmp) | |
140 | cpu_relax(); | |
141 | if (!tmp) | |
142 | pr_err("Error: busy bit is not cleared\n"); | |
143 | } | |
124d770a TO |
144 | |
145 | /** | |
146 | * pch_gbe_wait_clr_bit_irq - Wait to clear a bit for interrupt context | |
147 | * @reg: Pointer of register | |
148 | * @busy: Busy bit | |
149 | */ | |
150 | static int pch_gbe_wait_clr_bit_irq(void *reg, u32 bit) | |
151 | { | |
152 | u32 tmp; | |
153 | int ret = -1; | |
154 | /* wait busy */ | |
155 | tmp = 20; | |
156 | while ((ioread32(reg) & bit) && --tmp) | |
157 | udelay(5); | |
158 | if (!tmp) | |
159 | pr_err("Error: busy bit is not cleared\n"); | |
160 | else | |
161 | ret = 0; | |
162 | return ret; | |
163 | } | |
164 | ||
77555ee7 MO |
165 | /** |
166 | * pch_gbe_mac_mar_set - Set MAC address register | |
167 | * @hw: Pointer to the HW structure | |
168 | * @addr: Pointer to the MAC address | |
169 | * @index: MAC address array register | |
170 | */ | |
191cc687 | 171 | static void pch_gbe_mac_mar_set(struct pch_gbe_hw *hw, u8 * addr, u32 index) |
77555ee7 MO |
172 | { |
173 | u32 mar_low, mar_high, adrmask; | |
174 | ||
175 | pr_debug("index : 0x%x\n", index); | |
176 | ||
177 | /* | |
178 | * HW expects these in little endian so we reverse the byte order | |
179 | * from network order (big endian) to little endian | |
180 | */ | |
181 | mar_high = ((u32) addr[0] | ((u32) addr[1] << 8) | | |
182 | ((u32) addr[2] << 16) | ((u32) addr[3] << 24)); | |
183 | mar_low = ((u32) addr[4] | ((u32) addr[5] << 8)); | |
184 | /* Stop the MAC Address of index. */ | |
185 | adrmask = ioread32(&hw->reg->ADDR_MASK); | |
186 | iowrite32((adrmask | (0x0001 << index)), &hw->reg->ADDR_MASK); | |
187 | /* wait busy */ | |
188 | pch_gbe_wait_clr_bit(&hw->reg->ADDR_MASK, PCH_GBE_BUSY); | |
189 | /* Set the MAC address to the MAC address 1A/1B register */ | |
190 | iowrite32(mar_high, &hw->reg->mac_adr[index].high); | |
191 | iowrite32(mar_low, &hw->reg->mac_adr[index].low); | |
192 | /* Start the MAC address of index */ | |
193 | iowrite32((adrmask & ~(0x0001 << index)), &hw->reg->ADDR_MASK); | |
194 | /* wait busy */ | |
195 | pch_gbe_wait_clr_bit(&hw->reg->ADDR_MASK, PCH_GBE_BUSY); | |
196 | } | |
197 | ||
198 | /** | |
199 | * pch_gbe_mac_reset_hw - Reset hardware | |
200 | * @hw: Pointer to the HW structure | |
201 | */ | |
191cc687 | 202 | static void pch_gbe_mac_reset_hw(struct pch_gbe_hw *hw) |
77555ee7 MO |
203 | { |
204 | /* Read the MAC address. and store to the private data */ | |
205 | pch_gbe_mac_read_mac_addr(hw); | |
206 | iowrite32(PCH_GBE_ALL_RST, &hw->reg->RESET); | |
207 | #ifdef PCH_GBE_MAC_IFOP_RGMII | |
208 | iowrite32(PCH_GBE_MODE_GMII_ETHER, &hw->reg->MODE); | |
209 | #endif | |
210 | pch_gbe_wait_clr_bit(&hw->reg->RESET, PCH_GBE_ALL_RST); | |
211 | /* Setup the receive address */ | |
212 | pch_gbe_mac_mar_set(hw, hw->mac.addr, 0); | |
213 | return; | |
214 | } | |
215 | ||
124d770a TO |
216 | static void pch_gbe_mac_reset_rx(struct pch_gbe_hw *hw) |
217 | { | |
218 | /* Read the MAC address. and store to the private data */ | |
219 | pch_gbe_mac_read_mac_addr(hw); | |
220 | iowrite32(PCH_GBE_RX_RST, &hw->reg->RESET); | |
221 | pch_gbe_wait_clr_bit_irq(&hw->reg->RESET, PCH_GBE_RX_RST); | |
222 | /* Setup the MAC address */ | |
223 | pch_gbe_mac_mar_set(hw, hw->mac.addr, 0); | |
224 | return; | |
225 | } | |
226 | ||
77555ee7 MO |
227 | /** |
228 | * pch_gbe_mac_init_rx_addrs - Initialize receive address's | |
229 | * @hw: Pointer to the HW structure | |
230 | * @mar_count: Receive address registers | |
231 | */ | |
191cc687 | 232 | static void pch_gbe_mac_init_rx_addrs(struct pch_gbe_hw *hw, u16 mar_count) |
77555ee7 MO |
233 | { |
234 | u32 i; | |
235 | ||
236 | /* Setup the receive address */ | |
237 | pch_gbe_mac_mar_set(hw, hw->mac.addr, 0); | |
238 | ||
239 | /* Zero out the other receive addresses */ | |
240 | for (i = 1; i < mar_count; i++) { | |
241 | iowrite32(0, &hw->reg->mac_adr[i].high); | |
242 | iowrite32(0, &hw->reg->mac_adr[i].low); | |
243 | } | |
244 | iowrite32(0xFFFE, &hw->reg->ADDR_MASK); | |
245 | /* wait busy */ | |
246 | pch_gbe_wait_clr_bit(&hw->reg->ADDR_MASK, PCH_GBE_BUSY); | |
247 | } | |
248 | ||
249 | ||
250 | /** | |
251 | * pch_gbe_mac_mc_addr_list_update - Update Multicast addresses | |
252 | * @hw: Pointer to the HW structure | |
253 | * @mc_addr_list: Array of multicast addresses to program | |
254 | * @mc_addr_count: Number of multicast addresses to program | |
255 | * @mar_used_count: The first MAC Address register free to program | |
256 | * @mar_total_num: Total number of supported MAC Address Registers | |
257 | */ | |
191cc687 | 258 | static void pch_gbe_mac_mc_addr_list_update(struct pch_gbe_hw *hw, |
259 | u8 *mc_addr_list, u32 mc_addr_count, | |
260 | u32 mar_used_count, u32 mar_total_num) | |
77555ee7 MO |
261 | { |
262 | u32 i, adrmask; | |
263 | ||
264 | /* Load the first set of multicast addresses into the exact | |
265 | * filters (RAR). If there are not enough to fill the RAR | |
266 | * array, clear the filters. | |
267 | */ | |
268 | for (i = mar_used_count; i < mar_total_num; i++) { | |
269 | if (mc_addr_count) { | |
270 | pch_gbe_mac_mar_set(hw, mc_addr_list, i); | |
271 | mc_addr_count--; | |
272 | mc_addr_list += PCH_GBE_ETH_ALEN; | |
273 | } else { | |
274 | /* Clear MAC address mask */ | |
275 | adrmask = ioread32(&hw->reg->ADDR_MASK); | |
276 | iowrite32((adrmask | (0x0001 << i)), | |
277 | &hw->reg->ADDR_MASK); | |
278 | /* wait busy */ | |
279 | pch_gbe_wait_clr_bit(&hw->reg->ADDR_MASK, PCH_GBE_BUSY); | |
280 | /* Clear MAC address */ | |
281 | iowrite32(0, &hw->reg->mac_adr[i].high); | |
282 | iowrite32(0, &hw->reg->mac_adr[i].low); | |
283 | } | |
284 | } | |
285 | } | |
286 | ||
287 | /** | |
288 | * pch_gbe_mac_force_mac_fc - Force the MAC's flow control settings | |
289 | * @hw: Pointer to the HW structure | |
290 | * Returns | |
291 | * 0: Successful. | |
292 | * Negative value: Failed. | |
293 | */ | |
294 | s32 pch_gbe_mac_force_mac_fc(struct pch_gbe_hw *hw) | |
295 | { | |
296 | struct pch_gbe_mac_info *mac = &hw->mac; | |
297 | u32 rx_fctrl; | |
298 | ||
299 | pr_debug("mac->fc = %u\n", mac->fc); | |
300 | ||
301 | rx_fctrl = ioread32(&hw->reg->RX_FCTRL); | |
302 | ||
303 | switch (mac->fc) { | |
304 | case PCH_GBE_FC_NONE: | |
305 | rx_fctrl &= ~PCH_GBE_FL_CTRL_EN; | |
306 | mac->tx_fc_enable = false; | |
307 | break; | |
308 | case PCH_GBE_FC_RX_PAUSE: | |
309 | rx_fctrl |= PCH_GBE_FL_CTRL_EN; | |
310 | mac->tx_fc_enable = false; | |
311 | break; | |
312 | case PCH_GBE_FC_TX_PAUSE: | |
313 | rx_fctrl &= ~PCH_GBE_FL_CTRL_EN; | |
314 | mac->tx_fc_enable = true; | |
315 | break; | |
316 | case PCH_GBE_FC_FULL: | |
317 | rx_fctrl |= PCH_GBE_FL_CTRL_EN; | |
318 | mac->tx_fc_enable = true; | |
319 | break; | |
320 | default: | |
321 | pr_err("Flow control param set incorrectly\n"); | |
322 | return -EINVAL; | |
323 | } | |
324 | if (mac->link_duplex == DUPLEX_HALF) | |
325 | rx_fctrl &= ~PCH_GBE_FL_CTRL_EN; | |
326 | iowrite32(rx_fctrl, &hw->reg->RX_FCTRL); | |
327 | pr_debug("RX_FCTRL reg : 0x%08x mac->tx_fc_enable : %d\n", | |
328 | ioread32(&hw->reg->RX_FCTRL), mac->tx_fc_enable); | |
329 | return 0; | |
330 | } | |
331 | ||
332 | /** | |
333 | * pch_gbe_mac_set_wol_event - Set wake-on-lan event | |
334 | * @hw: Pointer to the HW structure | |
335 | * @wu_evt: Wake up event | |
336 | */ | |
191cc687 | 337 | static void pch_gbe_mac_set_wol_event(struct pch_gbe_hw *hw, u32 wu_evt) |
77555ee7 MO |
338 | { |
339 | u32 addr_mask; | |
340 | ||
341 | pr_debug("wu_evt : 0x%08x ADDR_MASK reg : 0x%08x\n", | |
342 | wu_evt, ioread32(&hw->reg->ADDR_MASK)); | |
343 | ||
344 | if (wu_evt) { | |
345 | /* Set Wake-On-Lan address mask */ | |
346 | addr_mask = ioread32(&hw->reg->ADDR_MASK); | |
347 | iowrite32(addr_mask, &hw->reg->WOL_ADDR_MASK); | |
348 | /* wait busy */ | |
349 | pch_gbe_wait_clr_bit(&hw->reg->WOL_ADDR_MASK, PCH_GBE_WLA_BUSY); | |
350 | iowrite32(0, &hw->reg->WOL_ST); | |
351 | iowrite32((wu_evt | PCH_GBE_WLC_WOL_MODE), &hw->reg->WOL_CTRL); | |
352 | iowrite32(0x02, &hw->reg->TCPIP_ACC); | |
353 | iowrite32(PCH_GBE_INT_ENABLE_MASK, &hw->reg->INT_EN); | |
354 | } else { | |
355 | iowrite32(0, &hw->reg->WOL_CTRL); | |
356 | iowrite32(0, &hw->reg->WOL_ST); | |
357 | } | |
358 | return; | |
359 | } | |
360 | ||
361 | /** | |
362 | * pch_gbe_mac_ctrl_miim - Control MIIM interface | |
363 | * @hw: Pointer to the HW structure | |
364 | * @addr: Address of PHY | |
365 | * @dir: Operetion. (Write or Read) | |
366 | * @reg: Access register of PHY | |
367 | * @data: Write data. | |
368 | * | |
369 | * Returns: Read date. | |
370 | */ | |
371 | u16 pch_gbe_mac_ctrl_miim(struct pch_gbe_hw *hw, u32 addr, u32 dir, u32 reg, | |
372 | u16 data) | |
373 | { | |
374 | u32 data_out = 0; | |
375 | unsigned int i; | |
376 | unsigned long flags; | |
377 | ||
378 | spin_lock_irqsave(&hw->miim_lock, flags); | |
379 | ||
380 | for (i = 100; i; --i) { | |
381 | if ((ioread32(&hw->reg->MIIM) & PCH_GBE_MIIM_OPER_READY)) | |
382 | break; | |
383 | udelay(20); | |
384 | } | |
385 | if (i == 0) { | |
386 | pr_err("pch-gbe.miim won't go Ready\n"); | |
387 | spin_unlock_irqrestore(&hw->miim_lock, flags); | |
388 | return 0; /* No way to indicate timeout error */ | |
389 | } | |
390 | iowrite32(((reg << PCH_GBE_MIIM_REG_ADDR_SHIFT) | | |
391 | (addr << PCH_GBE_MIIM_PHY_ADDR_SHIFT) | | |
392 | dir | data), &hw->reg->MIIM); | |
393 | for (i = 0; i < 100; i++) { | |
394 | udelay(20); | |
395 | data_out = ioread32(&hw->reg->MIIM); | |
396 | if ((data_out & PCH_GBE_MIIM_OPER_READY)) | |
397 | break; | |
398 | } | |
399 | spin_unlock_irqrestore(&hw->miim_lock, flags); | |
400 | ||
401 | pr_debug("PHY %s: reg=%d, data=0x%04X\n", | |
402 | dir == PCH_GBE_MIIM_OPER_READ ? "READ" : "WRITE", reg, | |
403 | dir == PCH_GBE_MIIM_OPER_READ ? data_out : data); | |
404 | return (u16) data_out; | |
405 | } | |
406 | ||
407 | /** | |
408 | * pch_gbe_mac_set_pause_packet - Set pause packet | |
409 | * @hw: Pointer to the HW structure | |
410 | */ | |
191cc687 | 411 | static void pch_gbe_mac_set_pause_packet(struct pch_gbe_hw *hw) |
77555ee7 MO |
412 | { |
413 | unsigned long tmp2, tmp3; | |
414 | ||
415 | /* Set Pause packet */ | |
416 | tmp2 = hw->mac.addr[1]; | |
417 | tmp2 = (tmp2 << 8) | hw->mac.addr[0]; | |
418 | tmp2 = PCH_GBE_PAUSE_PKT2_VALUE | (tmp2 << 16); | |
419 | ||
420 | tmp3 = hw->mac.addr[5]; | |
421 | tmp3 = (tmp3 << 8) | hw->mac.addr[4]; | |
422 | tmp3 = (tmp3 << 8) | hw->mac.addr[3]; | |
423 | tmp3 = (tmp3 << 8) | hw->mac.addr[2]; | |
424 | ||
425 | iowrite32(PCH_GBE_PAUSE_PKT1_VALUE, &hw->reg->PAUSE_PKT1); | |
426 | iowrite32(tmp2, &hw->reg->PAUSE_PKT2); | |
427 | iowrite32(tmp3, &hw->reg->PAUSE_PKT3); | |
428 | iowrite32(PCH_GBE_PAUSE_PKT4_VALUE, &hw->reg->PAUSE_PKT4); | |
429 | iowrite32(PCH_GBE_PAUSE_PKT5_VALUE, &hw->reg->PAUSE_PKT5); | |
430 | ||
431 | /* Transmit Pause Packet */ | |
432 | iowrite32(PCH_GBE_PS_PKT_RQ, &hw->reg->PAUSE_REQ); | |
433 | ||
434 | pr_debug("PAUSE_PKT1-5 reg : 0x%08x 0x%08x 0x%08x 0x%08x 0x%08x\n", | |
435 | ioread32(&hw->reg->PAUSE_PKT1), ioread32(&hw->reg->PAUSE_PKT2), | |
436 | ioread32(&hw->reg->PAUSE_PKT3), ioread32(&hw->reg->PAUSE_PKT4), | |
437 | ioread32(&hw->reg->PAUSE_PKT5)); | |
438 | ||
439 | return; | |
440 | } | |
441 | ||
442 | ||
443 | /** | |
444 | * pch_gbe_alloc_queues - Allocate memory for all rings | |
445 | * @adapter: Board private structure to initialize | |
446 | * Returns | |
447 | * 0: Successfully | |
448 | * Negative value: Failed | |
449 | */ | |
450 | static int pch_gbe_alloc_queues(struct pch_gbe_adapter *adapter) | |
451 | { | |
452 | int size; | |
453 | ||
454 | size = (int)sizeof(struct pch_gbe_tx_ring); | |
455 | adapter->tx_ring = kzalloc(size, GFP_KERNEL); | |
456 | if (!adapter->tx_ring) | |
457 | return -ENOMEM; | |
458 | size = (int)sizeof(struct pch_gbe_rx_ring); | |
459 | adapter->rx_ring = kzalloc(size, GFP_KERNEL); | |
460 | if (!adapter->rx_ring) { | |
461 | kfree(adapter->tx_ring); | |
462 | return -ENOMEM; | |
463 | } | |
464 | return 0; | |
465 | } | |
466 | ||
467 | /** | |
468 | * pch_gbe_init_stats - Initialize status | |
469 | * @adapter: Board private structure to initialize | |
470 | */ | |
471 | static void pch_gbe_init_stats(struct pch_gbe_adapter *adapter) | |
472 | { | |
473 | memset(&adapter->stats, 0, sizeof(adapter->stats)); | |
474 | return; | |
475 | } | |
476 | ||
477 | /** | |
478 | * pch_gbe_init_phy - Initialize PHY | |
479 | * @adapter: Board private structure to initialize | |
480 | * Returns | |
481 | * 0: Successfully | |
482 | * Negative value: Failed | |
483 | */ | |
484 | static int pch_gbe_init_phy(struct pch_gbe_adapter *adapter) | |
485 | { | |
486 | struct net_device *netdev = adapter->netdev; | |
487 | u32 addr; | |
488 | u16 bmcr, stat; | |
489 | ||
490 | /* Discover phy addr by searching addrs in order {1,0,2,..., 31} */ | |
491 | for (addr = 0; addr < PCH_GBE_PHY_REGS_LEN; addr++) { | |
492 | adapter->mii.phy_id = (addr == 0) ? 1 : (addr == 1) ? 0 : addr; | |
493 | bmcr = pch_gbe_mdio_read(netdev, adapter->mii.phy_id, MII_BMCR); | |
494 | stat = pch_gbe_mdio_read(netdev, adapter->mii.phy_id, MII_BMSR); | |
495 | stat = pch_gbe_mdio_read(netdev, adapter->mii.phy_id, MII_BMSR); | |
496 | if (!((bmcr == 0xFFFF) || ((stat == 0) && (bmcr == 0)))) | |
497 | break; | |
498 | } | |
499 | adapter->hw.phy.addr = adapter->mii.phy_id; | |
500 | pr_debug("phy_addr = %d\n", adapter->mii.phy_id); | |
501 | if (addr == 32) | |
502 | return -EAGAIN; | |
503 | /* Selected the phy and isolate the rest */ | |
504 | for (addr = 0; addr < PCH_GBE_PHY_REGS_LEN; addr++) { | |
505 | if (addr != adapter->mii.phy_id) { | |
506 | pch_gbe_mdio_write(netdev, addr, MII_BMCR, | |
507 | BMCR_ISOLATE); | |
508 | } else { | |
509 | bmcr = pch_gbe_mdio_read(netdev, addr, MII_BMCR); | |
510 | pch_gbe_mdio_write(netdev, addr, MII_BMCR, | |
511 | bmcr & ~BMCR_ISOLATE); | |
512 | } | |
513 | } | |
514 | ||
515 | /* MII setup */ | |
516 | adapter->mii.phy_id_mask = 0x1F; | |
517 | adapter->mii.reg_num_mask = 0x1F; | |
518 | adapter->mii.dev = adapter->netdev; | |
519 | adapter->mii.mdio_read = pch_gbe_mdio_read; | |
520 | adapter->mii.mdio_write = pch_gbe_mdio_write; | |
521 | adapter->mii.supports_gmii = mii_check_gmii_support(&adapter->mii); | |
522 | return 0; | |
523 | } | |
524 | ||
525 | /** | |
526 | * pch_gbe_mdio_read - The read function for mii | |
527 | * @netdev: Network interface device structure | |
528 | * @addr: Phy ID | |
529 | * @reg: Access location | |
530 | * Returns | |
531 | * 0: Successfully | |
532 | * Negative value: Failed | |
533 | */ | |
191cc687 | 534 | static int pch_gbe_mdio_read(struct net_device *netdev, int addr, int reg) |
77555ee7 MO |
535 | { |
536 | struct pch_gbe_adapter *adapter = netdev_priv(netdev); | |
537 | struct pch_gbe_hw *hw = &adapter->hw; | |
538 | ||
539 | return pch_gbe_mac_ctrl_miim(hw, addr, PCH_GBE_HAL_MIIM_READ, reg, | |
540 | (u16) 0); | |
541 | } | |
542 | ||
543 | /** | |
544 | * pch_gbe_mdio_write - The write function for mii | |
545 | * @netdev: Network interface device structure | |
546 | * @addr: Phy ID (not used) | |
547 | * @reg: Access location | |
548 | * @data: Write data | |
549 | */ | |
191cc687 | 550 | static void pch_gbe_mdio_write(struct net_device *netdev, |
551 | int addr, int reg, int data) | |
77555ee7 MO |
552 | { |
553 | struct pch_gbe_adapter *adapter = netdev_priv(netdev); | |
554 | struct pch_gbe_hw *hw = &adapter->hw; | |
555 | ||
556 | pch_gbe_mac_ctrl_miim(hw, addr, PCH_GBE_HAL_MIIM_WRITE, reg, data); | |
557 | } | |
558 | ||
559 | /** | |
560 | * pch_gbe_reset_task - Reset processing at the time of transmission timeout | |
561 | * @work: Pointer of board private structure | |
562 | */ | |
563 | static void pch_gbe_reset_task(struct work_struct *work) | |
564 | { | |
565 | struct pch_gbe_adapter *adapter; | |
566 | adapter = container_of(work, struct pch_gbe_adapter, reset_task); | |
567 | ||
75d1a752 | 568 | rtnl_lock(); |
77555ee7 | 569 | pch_gbe_reinit_locked(adapter); |
75d1a752 | 570 | rtnl_unlock(); |
77555ee7 MO |
571 | } |
572 | ||
573 | /** | |
574 | * pch_gbe_reinit_locked- Re-initialization | |
575 | * @adapter: Board private structure | |
576 | */ | |
577 | void pch_gbe_reinit_locked(struct pch_gbe_adapter *adapter) | |
578 | { | |
75d1a752 TO |
579 | pch_gbe_down(adapter); |
580 | pch_gbe_up(adapter); | |
77555ee7 MO |
581 | } |
582 | ||
583 | /** | |
584 | * pch_gbe_reset - Reset GbE | |
585 | * @adapter: Board private structure | |
586 | */ | |
587 | void pch_gbe_reset(struct pch_gbe_adapter *adapter) | |
588 | { | |
589 | pch_gbe_mac_reset_hw(&adapter->hw); | |
590 | /* Setup the receive address. */ | |
591 | pch_gbe_mac_init_rx_addrs(&adapter->hw, PCH_GBE_MAR_ENTRIES); | |
592 | if (pch_gbe_hal_init_hw(&adapter->hw)) | |
593 | pr_err("Hardware Error\n"); | |
594 | } | |
595 | ||
596 | /** | |
597 | * pch_gbe_free_irq - Free an interrupt | |
598 | * @adapter: Board private structure | |
599 | */ | |
600 | static void pch_gbe_free_irq(struct pch_gbe_adapter *adapter) | |
601 | { | |
602 | struct net_device *netdev = adapter->netdev; | |
603 | ||
604 | free_irq(adapter->pdev->irq, netdev); | |
605 | if (adapter->have_msi) { | |
606 | pci_disable_msi(adapter->pdev); | |
607 | pr_debug("call pci_disable_msi\n"); | |
608 | } | |
609 | } | |
610 | ||
611 | /** | |
612 | * pch_gbe_irq_disable - Mask off interrupt generation on the NIC | |
613 | * @adapter: Board private structure | |
614 | */ | |
615 | static void pch_gbe_irq_disable(struct pch_gbe_adapter *adapter) | |
616 | { | |
617 | struct pch_gbe_hw *hw = &adapter->hw; | |
618 | ||
619 | atomic_inc(&adapter->irq_sem); | |
620 | iowrite32(0, &hw->reg->INT_EN); | |
621 | ioread32(&hw->reg->INT_ST); | |
622 | synchronize_irq(adapter->pdev->irq); | |
623 | ||
624 | pr_debug("INT_EN reg : 0x%08x\n", ioread32(&hw->reg->INT_EN)); | |
625 | } | |
626 | ||
627 | /** | |
628 | * pch_gbe_irq_enable - Enable default interrupt generation settings | |
629 | * @adapter: Board private structure | |
630 | */ | |
631 | static void pch_gbe_irq_enable(struct pch_gbe_adapter *adapter) | |
632 | { | |
633 | struct pch_gbe_hw *hw = &adapter->hw; | |
634 | ||
635 | if (likely(atomic_dec_and_test(&adapter->irq_sem))) | |
636 | iowrite32(PCH_GBE_INT_ENABLE_MASK, &hw->reg->INT_EN); | |
637 | ioread32(&hw->reg->INT_ST); | |
638 | pr_debug("INT_EN reg : 0x%08x\n", ioread32(&hw->reg->INT_EN)); | |
639 | } | |
640 | ||
641 | ||
642 | ||
643 | /** | |
644 | * pch_gbe_setup_tctl - configure the Transmit control registers | |
645 | * @adapter: Board private structure | |
646 | */ | |
647 | static void pch_gbe_setup_tctl(struct pch_gbe_adapter *adapter) | |
648 | { | |
649 | struct pch_gbe_hw *hw = &adapter->hw; | |
650 | u32 tx_mode, tcpip; | |
651 | ||
652 | tx_mode = PCH_GBE_TM_LONG_PKT | | |
653 | PCH_GBE_TM_ST_AND_FD | | |
654 | PCH_GBE_TM_SHORT_PKT | | |
655 | PCH_GBE_TM_TH_TX_STRT_8 | | |
656 | PCH_GBE_TM_TH_ALM_EMP_4 | PCH_GBE_TM_TH_ALM_FULL_8; | |
657 | ||
658 | iowrite32(tx_mode, &hw->reg->TX_MODE); | |
659 | ||
660 | tcpip = ioread32(&hw->reg->TCPIP_ACC); | |
661 | tcpip |= PCH_GBE_TX_TCPIPACC_EN; | |
662 | iowrite32(tcpip, &hw->reg->TCPIP_ACC); | |
663 | return; | |
664 | } | |
665 | ||
666 | /** | |
667 | * pch_gbe_configure_tx - Configure Transmit Unit after Reset | |
668 | * @adapter: Board private structure | |
669 | */ | |
670 | static void pch_gbe_configure_tx(struct pch_gbe_adapter *adapter) | |
671 | { | |
672 | struct pch_gbe_hw *hw = &adapter->hw; | |
673 | u32 tdba, tdlen, dctrl; | |
674 | ||
675 | pr_debug("dma addr = 0x%08llx size = 0x%08x\n", | |
676 | (unsigned long long)adapter->tx_ring->dma, | |
677 | adapter->tx_ring->size); | |
678 | ||
679 | /* Setup the HW Tx Head and Tail descriptor pointers */ | |
680 | tdba = adapter->tx_ring->dma; | |
681 | tdlen = adapter->tx_ring->size - 0x10; | |
682 | iowrite32(tdba, &hw->reg->TX_DSC_BASE); | |
683 | iowrite32(tdlen, &hw->reg->TX_DSC_SIZE); | |
684 | iowrite32(tdba, &hw->reg->TX_DSC_SW_P); | |
685 | ||
686 | /* Enables Transmission DMA */ | |
687 | dctrl = ioread32(&hw->reg->DMA_CTRL); | |
688 | dctrl |= PCH_GBE_TX_DMA_EN; | |
689 | iowrite32(dctrl, &hw->reg->DMA_CTRL); | |
690 | } | |
691 | ||
692 | /** | |
693 | * pch_gbe_setup_rctl - Configure the receive control registers | |
694 | * @adapter: Board private structure | |
695 | */ | |
696 | static void pch_gbe_setup_rctl(struct pch_gbe_adapter *adapter) | |
697 | { | |
756a6b03 | 698 | struct net_device *netdev = adapter->netdev; |
77555ee7 MO |
699 | struct pch_gbe_hw *hw = &adapter->hw; |
700 | u32 rx_mode, tcpip; | |
701 | ||
702 | rx_mode = PCH_GBE_ADD_FIL_EN | PCH_GBE_MLT_FIL_EN | | |
703 | PCH_GBE_RH_ALM_EMP_4 | PCH_GBE_RH_ALM_FULL_4 | PCH_GBE_RH_RD_TRG_8; | |
704 | ||
705 | iowrite32(rx_mode, &hw->reg->RX_MODE); | |
706 | ||
707 | tcpip = ioread32(&hw->reg->TCPIP_ACC); | |
708 | ||
124d770a TO |
709 | tcpip |= PCH_GBE_RX_TCPIPACC_OFF; |
710 | tcpip &= ~PCH_GBE_RX_TCPIPACC_EN; | |
77555ee7 MO |
711 | iowrite32(tcpip, &hw->reg->TCPIP_ACC); |
712 | return; | |
713 | } | |
714 | ||
715 | /** | |
716 | * pch_gbe_configure_rx - Configure Receive Unit after Reset | |
717 | * @adapter: Board private structure | |
718 | */ | |
719 | static void pch_gbe_configure_rx(struct pch_gbe_adapter *adapter) | |
720 | { | |
721 | struct pch_gbe_hw *hw = &adapter->hw; | |
722 | u32 rdba, rdlen, rctl, rxdma; | |
723 | ||
724 | pr_debug("dma adr = 0x%08llx size = 0x%08x\n", | |
725 | (unsigned long long)adapter->rx_ring->dma, | |
726 | adapter->rx_ring->size); | |
727 | ||
728 | pch_gbe_mac_force_mac_fc(hw); | |
729 | ||
730 | /* Disables Receive MAC */ | |
731 | rctl = ioread32(&hw->reg->MAC_RX_EN); | |
732 | iowrite32((rctl & ~PCH_GBE_MRE_MAC_RX_EN), &hw->reg->MAC_RX_EN); | |
733 | ||
734 | /* Disables Receive DMA */ | |
735 | rxdma = ioread32(&hw->reg->DMA_CTRL); | |
736 | rxdma &= ~PCH_GBE_RX_DMA_EN; | |
737 | iowrite32(rxdma, &hw->reg->DMA_CTRL); | |
738 | ||
739 | pr_debug("MAC_RX_EN reg = 0x%08x DMA_CTRL reg = 0x%08x\n", | |
740 | ioread32(&hw->reg->MAC_RX_EN), | |
741 | ioread32(&hw->reg->DMA_CTRL)); | |
742 | ||
743 | /* Setup the HW Rx Head and Tail Descriptor Pointers and | |
744 | * the Base and Length of the Rx Descriptor Ring */ | |
745 | rdba = adapter->rx_ring->dma; | |
746 | rdlen = adapter->rx_ring->size - 0x10; | |
747 | iowrite32(rdba, &hw->reg->RX_DSC_BASE); | |
748 | iowrite32(rdlen, &hw->reg->RX_DSC_SIZE); | |
749 | iowrite32((rdba + rdlen), &hw->reg->RX_DSC_SW_P); | |
77555ee7 MO |
750 | } |
751 | ||
752 | /** | |
753 | * pch_gbe_unmap_and_free_tx_resource - Unmap and free tx socket buffer | |
754 | * @adapter: Board private structure | |
755 | * @buffer_info: Buffer information structure | |
756 | */ | |
757 | static void pch_gbe_unmap_and_free_tx_resource( | |
758 | struct pch_gbe_adapter *adapter, struct pch_gbe_buffer *buffer_info) | |
759 | { | |
760 | if (buffer_info->mapped) { | |
761 | dma_unmap_single(&adapter->pdev->dev, buffer_info->dma, | |
762 | buffer_info->length, DMA_TO_DEVICE); | |
763 | buffer_info->mapped = false; | |
764 | } | |
765 | if (buffer_info->skb) { | |
766 | dev_kfree_skb_any(buffer_info->skb); | |
767 | buffer_info->skb = NULL; | |
768 | } | |
769 | } | |
770 | ||
771 | /** | |
772 | * pch_gbe_unmap_and_free_rx_resource - Unmap and free rx socket buffer | |
773 | * @adapter: Board private structure | |
774 | * @buffer_info: Buffer information structure | |
775 | */ | |
776 | static void pch_gbe_unmap_and_free_rx_resource( | |
777 | struct pch_gbe_adapter *adapter, | |
778 | struct pch_gbe_buffer *buffer_info) | |
779 | { | |
780 | if (buffer_info->mapped) { | |
781 | dma_unmap_single(&adapter->pdev->dev, buffer_info->dma, | |
782 | buffer_info->length, DMA_FROM_DEVICE); | |
783 | buffer_info->mapped = false; | |
784 | } | |
785 | if (buffer_info->skb) { | |
786 | dev_kfree_skb_any(buffer_info->skb); | |
787 | buffer_info->skb = NULL; | |
788 | } | |
789 | } | |
790 | ||
791 | /** | |
792 | * pch_gbe_clean_tx_ring - Free Tx Buffers | |
793 | * @adapter: Board private structure | |
794 | * @tx_ring: Ring to be cleaned | |
795 | */ | |
796 | static void pch_gbe_clean_tx_ring(struct pch_gbe_adapter *adapter, | |
797 | struct pch_gbe_tx_ring *tx_ring) | |
798 | { | |
799 | struct pch_gbe_hw *hw = &adapter->hw; | |
800 | struct pch_gbe_buffer *buffer_info; | |
801 | unsigned long size; | |
802 | unsigned int i; | |
803 | ||
804 | /* Free all the Tx ring sk_buffs */ | |
805 | for (i = 0; i < tx_ring->count; i++) { | |
806 | buffer_info = &tx_ring->buffer_info[i]; | |
807 | pch_gbe_unmap_and_free_tx_resource(adapter, buffer_info); | |
808 | } | |
809 | pr_debug("call pch_gbe_unmap_and_free_tx_resource() %d count\n", i); | |
810 | ||
811 | size = (unsigned long)sizeof(struct pch_gbe_buffer) * tx_ring->count; | |
812 | memset(tx_ring->buffer_info, 0, size); | |
813 | ||
814 | /* Zero out the descriptor ring */ | |
815 | memset(tx_ring->desc, 0, tx_ring->size); | |
816 | tx_ring->next_to_use = 0; | |
817 | tx_ring->next_to_clean = 0; | |
818 | iowrite32(tx_ring->dma, &hw->reg->TX_DSC_HW_P); | |
819 | iowrite32((tx_ring->size - 0x10), &hw->reg->TX_DSC_SIZE); | |
820 | } | |
821 | ||
822 | /** | |
823 | * pch_gbe_clean_rx_ring - Free Rx Buffers | |
824 | * @adapter: Board private structure | |
825 | * @rx_ring: Ring to free buffers from | |
826 | */ | |
827 | static void | |
828 | pch_gbe_clean_rx_ring(struct pch_gbe_adapter *adapter, | |
829 | struct pch_gbe_rx_ring *rx_ring) | |
830 | { | |
831 | struct pch_gbe_hw *hw = &adapter->hw; | |
832 | struct pch_gbe_buffer *buffer_info; | |
833 | unsigned long size; | |
834 | unsigned int i; | |
835 | ||
836 | /* Free all the Rx ring sk_buffs */ | |
837 | for (i = 0; i < rx_ring->count; i++) { | |
838 | buffer_info = &rx_ring->buffer_info[i]; | |
839 | pch_gbe_unmap_and_free_rx_resource(adapter, buffer_info); | |
840 | } | |
841 | pr_debug("call pch_gbe_unmap_and_free_rx_resource() %d count\n", i); | |
842 | size = (unsigned long)sizeof(struct pch_gbe_buffer) * rx_ring->count; | |
843 | memset(rx_ring->buffer_info, 0, size); | |
844 | ||
845 | /* Zero out the descriptor ring */ | |
846 | memset(rx_ring->desc, 0, rx_ring->size); | |
847 | rx_ring->next_to_clean = 0; | |
848 | rx_ring->next_to_use = 0; | |
849 | iowrite32(rx_ring->dma, &hw->reg->RX_DSC_HW_P); | |
850 | iowrite32((rx_ring->size - 0x10), &hw->reg->RX_DSC_SIZE); | |
851 | } | |
852 | ||
853 | static void pch_gbe_set_rgmii_ctrl(struct pch_gbe_adapter *adapter, u16 speed, | |
854 | u16 duplex) | |
855 | { | |
856 | struct pch_gbe_hw *hw = &adapter->hw; | |
857 | unsigned long rgmii = 0; | |
858 | ||
859 | /* Set the RGMII control. */ | |
860 | #ifdef PCH_GBE_MAC_IFOP_RGMII | |
861 | switch (speed) { | |
862 | case SPEED_10: | |
863 | rgmii = (PCH_GBE_RGMII_RATE_2_5M | | |
864 | PCH_GBE_MAC_RGMII_CTRL_SETTING); | |
865 | break; | |
866 | case SPEED_100: | |
867 | rgmii = (PCH_GBE_RGMII_RATE_25M | | |
868 | PCH_GBE_MAC_RGMII_CTRL_SETTING); | |
869 | break; | |
870 | case SPEED_1000: | |
871 | rgmii = (PCH_GBE_RGMII_RATE_125M | | |
872 | PCH_GBE_MAC_RGMII_CTRL_SETTING); | |
873 | break; | |
874 | } | |
875 | iowrite32(rgmii, &hw->reg->RGMII_CTRL); | |
876 | #else /* GMII */ | |
877 | rgmii = 0; | |
878 | iowrite32(rgmii, &hw->reg->RGMII_CTRL); | |
879 | #endif | |
880 | } | |
881 | static void pch_gbe_set_mode(struct pch_gbe_adapter *adapter, u16 speed, | |
882 | u16 duplex) | |
883 | { | |
884 | struct net_device *netdev = adapter->netdev; | |
885 | struct pch_gbe_hw *hw = &adapter->hw; | |
886 | unsigned long mode = 0; | |
887 | ||
888 | /* Set the communication mode */ | |
889 | switch (speed) { | |
890 | case SPEED_10: | |
891 | mode = PCH_GBE_MODE_MII_ETHER; | |
892 | netdev->tx_queue_len = 10; | |
893 | break; | |
894 | case SPEED_100: | |
895 | mode = PCH_GBE_MODE_MII_ETHER; | |
896 | netdev->tx_queue_len = 100; | |
897 | break; | |
898 | case SPEED_1000: | |
899 | mode = PCH_GBE_MODE_GMII_ETHER; | |
900 | break; | |
901 | } | |
902 | if (duplex == DUPLEX_FULL) | |
903 | mode |= PCH_GBE_MODE_FULL_DUPLEX; | |
904 | else | |
905 | mode |= PCH_GBE_MODE_HALF_DUPLEX; | |
906 | iowrite32(mode, &hw->reg->MODE); | |
907 | } | |
908 | ||
909 | /** | |
910 | * pch_gbe_watchdog - Watchdog process | |
911 | * @data: Board private structure | |
912 | */ | |
913 | static void pch_gbe_watchdog(unsigned long data) | |
914 | { | |
915 | struct pch_gbe_adapter *adapter = (struct pch_gbe_adapter *)data; | |
916 | struct net_device *netdev = adapter->netdev; | |
917 | struct pch_gbe_hw *hw = &adapter->hw; | |
77555ee7 MO |
918 | |
919 | pr_debug("right now = %ld\n", jiffies); | |
920 | ||
921 | pch_gbe_update_stats(adapter); | |
922 | if ((mii_link_ok(&adapter->mii)) && (!netif_carrier_ok(netdev))) { | |
8ae6daca | 923 | struct ethtool_cmd cmd = { .cmd = ETHTOOL_GSET }; |
77555ee7 MO |
924 | netdev->tx_queue_len = adapter->tx_queue_len; |
925 | /* mii library handles link maintenance tasks */ | |
926 | if (mii_ethtool_gset(&adapter->mii, &cmd)) { | |
927 | pr_err("ethtool get setting Error\n"); | |
928 | mod_timer(&adapter->watchdog_timer, | |
929 | round_jiffies(jiffies + | |
930 | PCH_GBE_WATCHDOG_PERIOD)); | |
931 | return; | |
932 | } | |
8ae6daca | 933 | hw->mac.link_speed = ethtool_cmd_speed(&cmd); |
77555ee7 MO |
934 | hw->mac.link_duplex = cmd.duplex; |
935 | /* Set the RGMII control. */ | |
936 | pch_gbe_set_rgmii_ctrl(adapter, hw->mac.link_speed, | |
937 | hw->mac.link_duplex); | |
938 | /* Set the communication mode */ | |
939 | pch_gbe_set_mode(adapter, hw->mac.link_speed, | |
940 | hw->mac.link_duplex); | |
941 | netdev_dbg(netdev, | |
942 | "Link is Up %d Mbps %s-Duplex\n", | |
8ae6daca | 943 | hw->mac.link_speed, |
77555ee7 MO |
944 | cmd.duplex == DUPLEX_FULL ? "Full" : "Half"); |
945 | netif_carrier_on(netdev); | |
946 | netif_wake_queue(netdev); | |
947 | } else if ((!mii_link_ok(&adapter->mii)) && | |
948 | (netif_carrier_ok(netdev))) { | |
949 | netdev_dbg(netdev, "NIC Link is Down\n"); | |
950 | hw->mac.link_speed = SPEED_10; | |
951 | hw->mac.link_duplex = DUPLEX_HALF; | |
952 | netif_carrier_off(netdev); | |
953 | netif_stop_queue(netdev); | |
954 | } | |
955 | mod_timer(&adapter->watchdog_timer, | |
956 | round_jiffies(jiffies + PCH_GBE_WATCHDOG_PERIOD)); | |
957 | } | |
958 | ||
959 | /** | |
960 | * pch_gbe_tx_queue - Carry out queuing of the transmission data | |
961 | * @adapter: Board private structure | |
962 | * @tx_ring: Tx descriptor ring structure | |
963 | * @skb: Sockt buffer structure | |
964 | */ | |
965 | static void pch_gbe_tx_queue(struct pch_gbe_adapter *adapter, | |
966 | struct pch_gbe_tx_ring *tx_ring, | |
967 | struct sk_buff *skb) | |
968 | { | |
969 | struct pch_gbe_hw *hw = &adapter->hw; | |
970 | struct pch_gbe_tx_desc *tx_desc; | |
971 | struct pch_gbe_buffer *buffer_info; | |
972 | struct sk_buff *tmp_skb; | |
973 | unsigned int frame_ctrl; | |
974 | unsigned int ring_num; | |
975 | unsigned long flags; | |
976 | ||
977 | /*-- Set frame control --*/ | |
978 | frame_ctrl = 0; | |
979 | if (unlikely(skb->len < PCH_GBE_SHORT_PKT)) | |
980 | frame_ctrl |= PCH_GBE_TXD_CTRL_APAD; | |
756a6b03 | 981 | if (skb->ip_summed == CHECKSUM_NONE) |
77555ee7 MO |
982 | frame_ctrl |= PCH_GBE_TXD_CTRL_TCPIP_ACC_OFF; |
983 | ||
984 | /* Performs checksum processing */ | |
985 | /* | |
986 | * It is because the hardware accelerator does not support a checksum, | |
987 | * when the received data size is less than 64 bytes. | |
988 | */ | |
756a6b03 | 989 | if (skb->len < PCH_GBE_SHORT_PKT && skb->ip_summed != CHECKSUM_NONE) { |
77555ee7 MO |
990 | frame_ctrl |= PCH_GBE_TXD_CTRL_APAD | |
991 | PCH_GBE_TXD_CTRL_TCPIP_ACC_OFF; | |
992 | if (skb->protocol == htons(ETH_P_IP)) { | |
993 | struct iphdr *iph = ip_hdr(skb); | |
994 | unsigned int offset; | |
995 | iph->check = 0; | |
996 | iph->check = ip_fast_csum((u8 *) iph, iph->ihl); | |
997 | offset = skb_transport_offset(skb); | |
998 | if (iph->protocol == IPPROTO_TCP) { | |
999 | skb->csum = 0; | |
1000 | tcp_hdr(skb)->check = 0; | |
1001 | skb->csum = skb_checksum(skb, offset, | |
1002 | skb->len - offset, 0); | |
1003 | tcp_hdr(skb)->check = | |
1004 | csum_tcpudp_magic(iph->saddr, | |
1005 | iph->daddr, | |
1006 | skb->len - offset, | |
1007 | IPPROTO_TCP, | |
1008 | skb->csum); | |
1009 | } else if (iph->protocol == IPPROTO_UDP) { | |
1010 | skb->csum = 0; | |
1011 | udp_hdr(skb)->check = 0; | |
1012 | skb->csum = | |
1013 | skb_checksum(skb, offset, | |
1014 | skb->len - offset, 0); | |
1015 | udp_hdr(skb)->check = | |
1016 | csum_tcpudp_magic(iph->saddr, | |
1017 | iph->daddr, | |
1018 | skb->len - offset, | |
1019 | IPPROTO_UDP, | |
1020 | skb->csum); | |
1021 | } | |
1022 | } | |
1023 | } | |
1024 | spin_lock_irqsave(&tx_ring->tx_lock, flags); | |
1025 | ring_num = tx_ring->next_to_use; | |
1026 | if (unlikely((ring_num + 1) == tx_ring->count)) | |
1027 | tx_ring->next_to_use = 0; | |
1028 | else | |
1029 | tx_ring->next_to_use = ring_num + 1; | |
1030 | ||
1031 | spin_unlock_irqrestore(&tx_ring->tx_lock, flags); | |
1032 | buffer_info = &tx_ring->buffer_info[ring_num]; | |
1033 | tmp_skb = buffer_info->skb; | |
1034 | ||
1035 | /* [Header:14][payload] ---> [Header:14][paddong:2][payload] */ | |
1036 | memcpy(tmp_skb->data, skb->data, ETH_HLEN); | |
1037 | tmp_skb->data[ETH_HLEN] = 0x00; | |
1038 | tmp_skb->data[ETH_HLEN + 1] = 0x00; | |
1039 | tmp_skb->len = skb->len; | |
1040 | memcpy(&tmp_skb->data[ETH_HLEN + 2], &skb->data[ETH_HLEN], | |
1041 | (skb->len - ETH_HLEN)); | |
25985edc | 1042 | /*-- Set Buffer information --*/ |
77555ee7 MO |
1043 | buffer_info->length = tmp_skb->len; |
1044 | buffer_info->dma = dma_map_single(&adapter->pdev->dev, tmp_skb->data, | |
1045 | buffer_info->length, | |
1046 | DMA_TO_DEVICE); | |
1047 | if (dma_mapping_error(&adapter->pdev->dev, buffer_info->dma)) { | |
1048 | pr_err("TX DMA map failed\n"); | |
1049 | buffer_info->dma = 0; | |
1050 | buffer_info->time_stamp = 0; | |
1051 | tx_ring->next_to_use = ring_num; | |
1052 | return; | |
1053 | } | |
1054 | buffer_info->mapped = true; | |
1055 | buffer_info->time_stamp = jiffies; | |
1056 | ||
1057 | /*-- Set Tx descriptor --*/ | |
1058 | tx_desc = PCH_GBE_TX_DESC(*tx_ring, ring_num); | |
1059 | tx_desc->buffer_addr = (buffer_info->dma); | |
1060 | tx_desc->length = (tmp_skb->len); | |
1061 | tx_desc->tx_words_eob = ((tmp_skb->len + 3)); | |
1062 | tx_desc->tx_frame_ctrl = (frame_ctrl); | |
1063 | tx_desc->gbec_status = (DSC_INIT16); | |
1064 | ||
1065 | if (unlikely(++ring_num == tx_ring->count)) | |
1066 | ring_num = 0; | |
1067 | ||
1068 | /* Update software pointer of TX descriptor */ | |
1069 | iowrite32(tx_ring->dma + | |
1070 | (int)sizeof(struct pch_gbe_tx_desc) * ring_num, | |
1071 | &hw->reg->TX_DSC_SW_P); | |
1072 | dev_kfree_skb_any(skb); | |
1073 | } | |
1074 | ||
1075 | /** | |
1076 | * pch_gbe_update_stats - Update the board statistics counters | |
1077 | * @adapter: Board private structure | |
1078 | */ | |
1079 | void pch_gbe_update_stats(struct pch_gbe_adapter *adapter) | |
1080 | { | |
1081 | struct net_device *netdev = adapter->netdev; | |
1082 | struct pci_dev *pdev = adapter->pdev; | |
1083 | struct pch_gbe_hw_stats *stats = &adapter->stats; | |
1084 | unsigned long flags; | |
1085 | ||
1086 | /* | |
1087 | * Prevent stats update while adapter is being reset, or if the pci | |
1088 | * connection is down. | |
1089 | */ | |
1090 | if ((pdev->error_state) && (pdev->error_state != pci_channel_io_normal)) | |
1091 | return; | |
1092 | ||
1093 | spin_lock_irqsave(&adapter->stats_lock, flags); | |
1094 | ||
1095 | /* Update device status "adapter->stats" */ | |
1096 | stats->rx_errors = stats->rx_crc_errors + stats->rx_frame_errors; | |
1097 | stats->tx_errors = stats->tx_length_errors + | |
1098 | stats->tx_aborted_errors + | |
1099 | stats->tx_carrier_errors + stats->tx_timeout_count; | |
1100 | ||
1101 | /* Update network device status "adapter->net_stats" */ | |
1102 | netdev->stats.rx_packets = stats->rx_packets; | |
1103 | netdev->stats.rx_bytes = stats->rx_bytes; | |
1104 | netdev->stats.rx_dropped = stats->rx_dropped; | |
1105 | netdev->stats.tx_packets = stats->tx_packets; | |
1106 | netdev->stats.tx_bytes = stats->tx_bytes; | |
1107 | netdev->stats.tx_dropped = stats->tx_dropped; | |
1108 | /* Fill out the OS statistics structure */ | |
1109 | netdev->stats.multicast = stats->multicast; | |
1110 | netdev->stats.collisions = stats->collisions; | |
1111 | /* Rx Errors */ | |
1112 | netdev->stats.rx_errors = stats->rx_errors; | |
1113 | netdev->stats.rx_crc_errors = stats->rx_crc_errors; | |
1114 | netdev->stats.rx_frame_errors = stats->rx_frame_errors; | |
1115 | /* Tx Errors */ | |
1116 | netdev->stats.tx_errors = stats->tx_errors; | |
1117 | netdev->stats.tx_aborted_errors = stats->tx_aborted_errors; | |
1118 | netdev->stats.tx_carrier_errors = stats->tx_carrier_errors; | |
1119 | ||
1120 | spin_unlock_irqrestore(&adapter->stats_lock, flags); | |
1121 | } | |
1122 | ||
124d770a TO |
1123 | static void pch_gbe_stop_receive(struct pch_gbe_adapter *adapter) |
1124 | { | |
1125 | struct pch_gbe_hw *hw = &adapter->hw; | |
1126 | u32 rxdma; | |
1127 | u16 value; | |
1128 | int ret; | |
1129 | ||
1130 | /* Disable Receive DMA */ | |
1131 | rxdma = ioread32(&hw->reg->DMA_CTRL); | |
1132 | rxdma &= ~PCH_GBE_RX_DMA_EN; | |
1133 | iowrite32(rxdma, &hw->reg->DMA_CTRL); | |
1134 | /* Wait Rx DMA BUS is IDLE */ | |
1135 | ret = pch_gbe_wait_clr_bit_irq(&hw->reg->RX_DMA_ST, PCH_GBE_IDLE_CHECK); | |
1136 | if (ret) { | |
1137 | /* Disable Bus master */ | |
1138 | pci_read_config_word(adapter->pdev, PCI_COMMAND, &value); | |
1139 | value &= ~PCI_COMMAND_MASTER; | |
1140 | pci_write_config_word(adapter->pdev, PCI_COMMAND, value); | |
1141 | /* Stop Receive */ | |
1142 | pch_gbe_mac_reset_rx(hw); | |
1143 | /* Enable Bus master */ | |
1144 | value |= PCI_COMMAND_MASTER; | |
1145 | pci_write_config_word(adapter->pdev, PCI_COMMAND, value); | |
1146 | } else { | |
1147 | /* Stop Receive */ | |
1148 | pch_gbe_mac_reset_rx(hw); | |
1149 | } | |
1150 | } | |
1151 | ||
5229d87e TO |
1152 | static void pch_gbe_start_receive(struct pch_gbe_hw *hw) |
1153 | { | |
1154 | u32 rxdma; | |
1155 | ||
1156 | /* Enables Receive DMA */ | |
1157 | rxdma = ioread32(&hw->reg->DMA_CTRL); | |
1158 | rxdma |= PCH_GBE_RX_DMA_EN; | |
1159 | iowrite32(rxdma, &hw->reg->DMA_CTRL); | |
1160 | /* Enables Receive */ | |
1161 | iowrite32(PCH_GBE_MRE_MAC_RX_EN, &hw->reg->MAC_RX_EN); | |
1162 | return; | |
1163 | } | |
1164 | ||
77555ee7 MO |
1165 | /** |
1166 | * pch_gbe_intr - Interrupt Handler | |
1167 | * @irq: Interrupt number | |
1168 | * @data: Pointer to a network interface device structure | |
1169 | * Returns | |
1170 | * - IRQ_HANDLED: Our interrupt | |
1171 | * - IRQ_NONE: Not our interrupt | |
1172 | */ | |
1173 | static irqreturn_t pch_gbe_intr(int irq, void *data) | |
1174 | { | |
1175 | struct net_device *netdev = data; | |
1176 | struct pch_gbe_adapter *adapter = netdev_priv(netdev); | |
1177 | struct pch_gbe_hw *hw = &adapter->hw; | |
1178 | u32 int_st; | |
1179 | u32 int_en; | |
1180 | ||
1181 | /* Check request status */ | |
1182 | int_st = ioread32(&hw->reg->INT_ST); | |
1183 | int_st = int_st & ioread32(&hw->reg->INT_EN); | |
1184 | /* When request status is no interruption factor */ | |
1185 | if (unlikely(!int_st)) | |
1186 | return IRQ_NONE; /* Not our interrupt. End processing. */ | |
1187 | pr_debug("%s occur int_st = 0x%08x\n", __func__, int_st); | |
1188 | if (int_st & PCH_GBE_INT_RX_FRAME_ERR) | |
1189 | adapter->stats.intr_rx_frame_err_count++; | |
1190 | if (int_st & PCH_GBE_INT_RX_FIFO_ERR) | |
124d770a TO |
1191 | if (!adapter->rx_stop_flag) { |
1192 | adapter->stats.intr_rx_fifo_err_count++; | |
1193 | pr_debug("Rx fifo over run\n"); | |
1194 | adapter->rx_stop_flag = true; | |
1195 | int_en = ioread32(&hw->reg->INT_EN); | |
1196 | iowrite32((int_en & ~PCH_GBE_INT_RX_FIFO_ERR), | |
1197 | &hw->reg->INT_EN); | |
1198 | pch_gbe_stop_receive(adapter); | |
1199 | } | |
77555ee7 MO |
1200 | if (int_st & PCH_GBE_INT_RX_DMA_ERR) |
1201 | adapter->stats.intr_rx_dma_err_count++; | |
1202 | if (int_st & PCH_GBE_INT_TX_FIFO_ERR) | |
1203 | adapter->stats.intr_tx_fifo_err_count++; | |
1204 | if (int_st & PCH_GBE_INT_TX_DMA_ERR) | |
1205 | adapter->stats.intr_tx_dma_err_count++; | |
1206 | if (int_st & PCH_GBE_INT_TCPIP_ERR) | |
1207 | adapter->stats.intr_tcpip_err_count++; | |
1208 | /* When Rx descriptor is empty */ | |
1209 | if ((int_st & PCH_GBE_INT_RX_DSC_EMP)) { | |
1210 | adapter->stats.intr_rx_dsc_empty_count++; | |
124d770a | 1211 | pr_debug("Rx descriptor is empty\n"); |
77555ee7 MO |
1212 | int_en = ioread32(&hw->reg->INT_EN); |
1213 | iowrite32((int_en & ~PCH_GBE_INT_RX_DSC_EMP), &hw->reg->INT_EN); | |
1214 | if (hw->mac.tx_fc_enable) { | |
1215 | /* Set Pause packet */ | |
1216 | pch_gbe_mac_set_pause_packet(hw); | |
1217 | } | |
1218 | if ((int_en & (PCH_GBE_INT_RX_DMA_CMPLT | PCH_GBE_INT_TX_CMPLT)) | |
1219 | == 0) { | |
1220 | return IRQ_HANDLED; | |
1221 | } | |
1222 | } | |
1223 | ||
1224 | /* When request status is Receive interruption */ | |
1225 | if ((int_st & (PCH_GBE_INT_RX_DMA_CMPLT | PCH_GBE_INT_TX_CMPLT))) { | |
1226 | if (likely(napi_schedule_prep(&adapter->napi))) { | |
1227 | /* Enable only Rx Descriptor empty */ | |
1228 | atomic_inc(&adapter->irq_sem); | |
1229 | int_en = ioread32(&hw->reg->INT_EN); | |
1230 | int_en &= | |
1231 | ~(PCH_GBE_INT_RX_DMA_CMPLT | PCH_GBE_INT_TX_CMPLT); | |
1232 | iowrite32(int_en, &hw->reg->INT_EN); | |
1233 | /* Start polling for NAPI */ | |
1234 | __napi_schedule(&adapter->napi); | |
1235 | } | |
1236 | } | |
1237 | pr_debug("return = 0x%08x INT_EN reg = 0x%08x\n", | |
1238 | IRQ_HANDLED, ioread32(&hw->reg->INT_EN)); | |
1239 | return IRQ_HANDLED; | |
1240 | } | |
1241 | ||
1242 | /** | |
1243 | * pch_gbe_alloc_rx_buffers - Replace used receive buffers; legacy & extended | |
1244 | * @adapter: Board private structure | |
1245 | * @rx_ring: Rx descriptor ring | |
1246 | * @cleaned_count: Cleaned count | |
1247 | */ | |
1248 | static void | |
1249 | pch_gbe_alloc_rx_buffers(struct pch_gbe_adapter *adapter, | |
1250 | struct pch_gbe_rx_ring *rx_ring, int cleaned_count) | |
1251 | { | |
1252 | struct net_device *netdev = adapter->netdev; | |
1253 | struct pci_dev *pdev = adapter->pdev; | |
1254 | struct pch_gbe_hw *hw = &adapter->hw; | |
1255 | struct pch_gbe_rx_desc *rx_desc; | |
1256 | struct pch_gbe_buffer *buffer_info; | |
1257 | struct sk_buff *skb; | |
1258 | unsigned int i; | |
1259 | unsigned int bufsz; | |
1260 | ||
124d770a | 1261 | bufsz = adapter->rx_buffer_len + NET_IP_ALIGN; |
77555ee7 MO |
1262 | i = rx_ring->next_to_use; |
1263 | ||
1264 | while ((cleaned_count--)) { | |
1265 | buffer_info = &rx_ring->buffer_info[i]; | |
124d770a TO |
1266 | skb = netdev_alloc_skb(netdev, bufsz); |
1267 | if (unlikely(!skb)) { | |
1268 | /* Better luck next round */ | |
1269 | adapter->stats.rx_alloc_buff_failed++; | |
1270 | break; | |
77555ee7 | 1271 | } |
124d770a TO |
1272 | /* align */ |
1273 | skb_reserve(skb, NET_IP_ALIGN); | |
1274 | buffer_info->skb = skb; | |
1275 | ||
77555ee7 | 1276 | buffer_info->dma = dma_map_single(&pdev->dev, |
124d770a | 1277 | buffer_info->rx_buffer, |
77555ee7 MO |
1278 | buffer_info->length, |
1279 | DMA_FROM_DEVICE); | |
1280 | if (dma_mapping_error(&adapter->pdev->dev, buffer_info->dma)) { | |
1281 | dev_kfree_skb(skb); | |
1282 | buffer_info->skb = NULL; | |
1283 | buffer_info->dma = 0; | |
1284 | adapter->stats.rx_alloc_buff_failed++; | |
1285 | break; /* while !buffer_info->skb */ | |
1286 | } | |
1287 | buffer_info->mapped = true; | |
1288 | rx_desc = PCH_GBE_RX_DESC(*rx_ring, i); | |
1289 | rx_desc->buffer_addr = (buffer_info->dma); | |
1290 | rx_desc->gbec_status = DSC_INIT16; | |
1291 | ||
1292 | pr_debug("i = %d buffer_info->dma = 0x08%llx buffer_info->length = 0x%x\n", | |
1293 | i, (unsigned long long)buffer_info->dma, | |
1294 | buffer_info->length); | |
1295 | ||
1296 | if (unlikely(++i == rx_ring->count)) | |
1297 | i = 0; | |
1298 | } | |
1299 | if (likely(rx_ring->next_to_use != i)) { | |
1300 | rx_ring->next_to_use = i; | |
1301 | if (unlikely(i-- == 0)) | |
1302 | i = (rx_ring->count - 1); | |
1303 | iowrite32(rx_ring->dma + | |
1304 | (int)sizeof(struct pch_gbe_rx_desc) * i, | |
1305 | &hw->reg->RX_DSC_SW_P); | |
1306 | } | |
1307 | return; | |
1308 | } | |
1309 | ||
124d770a TO |
1310 | static int |
1311 | pch_gbe_alloc_rx_buffers_pool(struct pch_gbe_adapter *adapter, | |
1312 | struct pch_gbe_rx_ring *rx_ring, int cleaned_count) | |
1313 | { | |
1314 | struct pci_dev *pdev = adapter->pdev; | |
1315 | struct pch_gbe_buffer *buffer_info; | |
1316 | unsigned int i; | |
1317 | unsigned int bufsz; | |
1318 | unsigned int size; | |
1319 | ||
1320 | bufsz = adapter->rx_buffer_len; | |
1321 | ||
1322 | size = rx_ring->count * bufsz + PCH_GBE_RESERVE_MEMORY; | |
1323 | rx_ring->rx_buff_pool = dma_alloc_coherent(&pdev->dev, size, | |
1324 | &rx_ring->rx_buff_pool_logic, | |
1325 | GFP_KERNEL); | |
1326 | if (!rx_ring->rx_buff_pool) { | |
1327 | pr_err("Unable to allocate memory for the receive poll buffer\n"); | |
1328 | return -ENOMEM; | |
1329 | } | |
1330 | memset(rx_ring->rx_buff_pool, 0, size); | |
1331 | rx_ring->rx_buff_pool_size = size; | |
1332 | for (i = 0; i < rx_ring->count; i++) { | |
1333 | buffer_info = &rx_ring->buffer_info[i]; | |
1334 | buffer_info->rx_buffer = rx_ring->rx_buff_pool + bufsz * i; | |
1335 | buffer_info->length = bufsz; | |
1336 | } | |
1337 | return 0; | |
1338 | } | |
1339 | ||
77555ee7 MO |
1340 | /** |
1341 | * pch_gbe_alloc_tx_buffers - Allocate transmit buffers | |
1342 | * @adapter: Board private structure | |
1343 | * @tx_ring: Tx descriptor ring | |
1344 | */ | |
1345 | static void pch_gbe_alloc_tx_buffers(struct pch_gbe_adapter *adapter, | |
1346 | struct pch_gbe_tx_ring *tx_ring) | |
1347 | { | |
1348 | struct pch_gbe_buffer *buffer_info; | |
1349 | struct sk_buff *skb; | |
1350 | unsigned int i; | |
1351 | unsigned int bufsz; | |
1352 | struct pch_gbe_tx_desc *tx_desc; | |
1353 | ||
1354 | bufsz = | |
1355 | adapter->hw.mac.max_frame_size + PCH_GBE_DMA_ALIGN + NET_IP_ALIGN; | |
1356 | ||
1357 | for (i = 0; i < tx_ring->count; i++) { | |
1358 | buffer_info = &tx_ring->buffer_info[i]; | |
1359 | skb = netdev_alloc_skb(adapter->netdev, bufsz); | |
1360 | skb_reserve(skb, PCH_GBE_DMA_ALIGN); | |
1361 | buffer_info->skb = skb; | |
1362 | tx_desc = PCH_GBE_TX_DESC(*tx_ring, i); | |
1363 | tx_desc->gbec_status = (DSC_INIT16); | |
1364 | } | |
1365 | return; | |
1366 | } | |
1367 | ||
1368 | /** | |
1369 | * pch_gbe_clean_tx - Reclaim resources after transmit completes | |
1370 | * @adapter: Board private structure | |
1371 | * @tx_ring: Tx descriptor ring | |
1372 | * Returns | |
1373 | * true: Cleaned the descriptor | |
1374 | * false: Not cleaned the descriptor | |
1375 | */ | |
1376 | static bool | |
1377 | pch_gbe_clean_tx(struct pch_gbe_adapter *adapter, | |
1378 | struct pch_gbe_tx_ring *tx_ring) | |
1379 | { | |
1380 | struct pch_gbe_tx_desc *tx_desc; | |
1381 | struct pch_gbe_buffer *buffer_info; | |
1382 | struct sk_buff *skb; | |
1383 | unsigned int i; | |
1384 | unsigned int cleaned_count = 0; | |
1385 | bool cleaned = false; | |
1386 | ||
1387 | pr_debug("next_to_clean : %d\n", tx_ring->next_to_clean); | |
1388 | ||
1389 | i = tx_ring->next_to_clean; | |
1390 | tx_desc = PCH_GBE_TX_DESC(*tx_ring, i); | |
1391 | pr_debug("gbec_status:0x%04x dma_status:0x%04x\n", | |
1392 | tx_desc->gbec_status, tx_desc->dma_status); | |
1393 | ||
1394 | while ((tx_desc->gbec_status & DSC_INIT16) == 0x0000) { | |
1395 | pr_debug("gbec_status:0x%04x\n", tx_desc->gbec_status); | |
1396 | cleaned = true; | |
1397 | buffer_info = &tx_ring->buffer_info[i]; | |
1398 | skb = buffer_info->skb; | |
1399 | ||
1400 | if ((tx_desc->gbec_status & PCH_GBE_TXD_GMAC_STAT_ABT)) { | |
1401 | adapter->stats.tx_aborted_errors++; | |
1402 | pr_err("Transfer Abort Error\n"); | |
1403 | } else if ((tx_desc->gbec_status & PCH_GBE_TXD_GMAC_STAT_CRSER) | |
1404 | ) { | |
1405 | adapter->stats.tx_carrier_errors++; | |
1406 | pr_err("Transfer Carrier Sense Error\n"); | |
1407 | } else if ((tx_desc->gbec_status & PCH_GBE_TXD_GMAC_STAT_EXCOL) | |
1408 | ) { | |
1409 | adapter->stats.tx_aborted_errors++; | |
1410 | pr_err("Transfer Collision Abort Error\n"); | |
1411 | } else if ((tx_desc->gbec_status & | |
1412 | (PCH_GBE_TXD_GMAC_STAT_SNGCOL | | |
1413 | PCH_GBE_TXD_GMAC_STAT_MLTCOL))) { | |
1414 | adapter->stats.collisions++; | |
1415 | adapter->stats.tx_packets++; | |
1416 | adapter->stats.tx_bytes += skb->len; | |
1417 | pr_debug("Transfer Collision\n"); | |
1418 | } else if ((tx_desc->gbec_status & PCH_GBE_TXD_GMAC_STAT_CMPLT) | |
1419 | ) { | |
1420 | adapter->stats.tx_packets++; | |
1421 | adapter->stats.tx_bytes += skb->len; | |
1422 | } | |
1423 | if (buffer_info->mapped) { | |
1424 | pr_debug("unmap buffer_info->dma : %d\n", i); | |
1425 | dma_unmap_single(&adapter->pdev->dev, buffer_info->dma, | |
1426 | buffer_info->length, DMA_TO_DEVICE); | |
1427 | buffer_info->mapped = false; | |
1428 | } | |
1429 | if (buffer_info->skb) { | |
1430 | pr_debug("trim buffer_info->skb : %d\n", i); | |
1431 | skb_trim(buffer_info->skb, 0); | |
1432 | } | |
1433 | tx_desc->gbec_status = DSC_INIT16; | |
1434 | if (unlikely(++i == tx_ring->count)) | |
1435 | i = 0; | |
1436 | tx_desc = PCH_GBE_TX_DESC(*tx_ring, i); | |
1437 | ||
1438 | /* weight of a sort for tx, to avoid endless transmit cleanup */ | |
1439 | if (cleaned_count++ == PCH_GBE_TX_WEIGHT) | |
1440 | break; | |
1441 | } | |
1442 | pr_debug("called pch_gbe_unmap_and_free_tx_resource() %d count\n", | |
1443 | cleaned_count); | |
1444 | /* Recover from running out of Tx resources in xmit_frame */ | |
1445 | if (unlikely(cleaned && (netif_queue_stopped(adapter->netdev)))) { | |
1446 | netif_wake_queue(adapter->netdev); | |
1447 | adapter->stats.tx_restart_count++; | |
1448 | pr_debug("Tx wake queue\n"); | |
1449 | } | |
1450 | spin_lock(&adapter->tx_queue_lock); | |
1451 | tx_ring->next_to_clean = i; | |
1452 | spin_unlock(&adapter->tx_queue_lock); | |
1453 | pr_debug("next_to_clean : %d\n", tx_ring->next_to_clean); | |
1454 | return cleaned; | |
1455 | } | |
1456 | ||
1457 | /** | |
1458 | * pch_gbe_clean_rx - Send received data up the network stack; legacy | |
1459 | * @adapter: Board private structure | |
1460 | * @rx_ring: Rx descriptor ring | |
1461 | * @work_done: Completed count | |
1462 | * @work_to_do: Request count | |
1463 | * Returns | |
1464 | * true: Cleaned the descriptor | |
1465 | * false: Not cleaned the descriptor | |
1466 | */ | |
1467 | static bool | |
1468 | pch_gbe_clean_rx(struct pch_gbe_adapter *adapter, | |
1469 | struct pch_gbe_rx_ring *rx_ring, | |
1470 | int *work_done, int work_to_do) | |
1471 | { | |
1472 | struct net_device *netdev = adapter->netdev; | |
1473 | struct pci_dev *pdev = adapter->pdev; | |
1474 | struct pch_gbe_buffer *buffer_info; | |
1475 | struct pch_gbe_rx_desc *rx_desc; | |
1476 | u32 length; | |
77555ee7 MO |
1477 | unsigned int i; |
1478 | unsigned int cleaned_count = 0; | |
1479 | bool cleaned = false; | |
124d770a | 1480 | struct sk_buff *skb; |
77555ee7 MO |
1481 | u8 dma_status; |
1482 | u16 gbec_status; | |
1483 | u32 tcp_ip_status; | |
77555ee7 MO |
1484 | |
1485 | i = rx_ring->next_to_clean; | |
1486 | ||
1487 | while (*work_done < work_to_do) { | |
1488 | /* Check Rx descriptor status */ | |
1489 | rx_desc = PCH_GBE_RX_DESC(*rx_ring, i); | |
1490 | if (rx_desc->gbec_status == DSC_INIT16) | |
1491 | break; | |
1492 | cleaned = true; | |
1493 | cleaned_count++; | |
1494 | ||
1495 | dma_status = rx_desc->dma_status; | |
1496 | gbec_status = rx_desc->gbec_status; | |
1497 | tcp_ip_status = rx_desc->tcp_ip_status; | |
1498 | rx_desc->gbec_status = DSC_INIT16; | |
1499 | buffer_info = &rx_ring->buffer_info[i]; | |
1500 | skb = buffer_info->skb; | |
124d770a | 1501 | buffer_info->skb = NULL; |
77555ee7 MO |
1502 | |
1503 | /* unmap dma */ | |
1504 | dma_unmap_single(&pdev->dev, buffer_info->dma, | |
1505 | buffer_info->length, DMA_FROM_DEVICE); | |
1506 | buffer_info->mapped = false; | |
77555ee7 MO |
1507 | |
1508 | pr_debug("RxDecNo = 0x%04x Status[DMA:0x%02x GBE:0x%04x " | |
1509 | "TCP:0x%08x] BufInf = 0x%p\n", | |
1510 | i, dma_status, gbec_status, tcp_ip_status, | |
1511 | buffer_info); | |
1512 | /* Error check */ | |
1513 | if (unlikely(gbec_status & PCH_GBE_RXD_GMAC_STAT_NOTOCTAL)) { | |
1514 | adapter->stats.rx_frame_errors++; | |
1515 | pr_err("Receive Not Octal Error\n"); | |
1516 | } else if (unlikely(gbec_status & | |
1517 | PCH_GBE_RXD_GMAC_STAT_NBLERR)) { | |
1518 | adapter->stats.rx_frame_errors++; | |
1519 | pr_err("Receive Nibble Error\n"); | |
1520 | } else if (unlikely(gbec_status & | |
1521 | PCH_GBE_RXD_GMAC_STAT_CRCERR)) { | |
1522 | adapter->stats.rx_crc_errors++; | |
1523 | pr_err("Receive CRC Error\n"); | |
1524 | } else { | |
1525 | /* get receive length */ | |
124d770a TO |
1526 | /* length convert[-3], length includes FCS length */ |
1527 | length = (rx_desc->rx_words_eob) - 3 - ETH_FCS_LEN; | |
1528 | if (rx_desc->rx_words_eob & 0x02) | |
1529 | length = length - 4; | |
1530 | /* | |
1531 | * buffer_info->rx_buffer: [Header:14][payload] | |
1532 | * skb->data: [Reserve:2][Header:14][payload] | |
1533 | */ | |
1534 | memcpy(skb->data, buffer_info->rx_buffer, length); | |
1535 | ||
77555ee7 MO |
1536 | /* update status of driver */ |
1537 | adapter->stats.rx_bytes += length; | |
1538 | adapter->stats.rx_packets++; | |
1539 | if ((gbec_status & PCH_GBE_RXD_GMAC_STAT_MARMLT)) | |
1540 | adapter->stats.multicast++; | |
1541 | /* Write meta date of skb */ | |
1542 | skb_put(skb, length); | |
1543 | skb->protocol = eth_type_trans(skb, netdev); | |
5d05a04d | 1544 | if (tcp_ip_status & PCH_GBE_RXD_ACC_STAT_TCPIPOK) |
77555ee7 | 1545 | skb->ip_summed = CHECKSUM_NONE; |
5d05a04d TO |
1546 | else |
1547 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
1548 | ||
77555ee7 MO |
1549 | napi_gro_receive(&adapter->napi, skb); |
1550 | (*work_done)++; | |
1551 | pr_debug("Receive skb->ip_summed: %d length: %d\n", | |
1552 | skb->ip_summed, length); | |
1553 | } | |
77555ee7 MO |
1554 | /* return some buffers to hardware, one at a time is too slow */ |
1555 | if (unlikely(cleaned_count >= PCH_GBE_RX_BUFFER_WRITE)) { | |
1556 | pch_gbe_alloc_rx_buffers(adapter, rx_ring, | |
1557 | cleaned_count); | |
1558 | cleaned_count = 0; | |
1559 | } | |
1560 | if (++i == rx_ring->count) | |
1561 | i = 0; | |
1562 | } | |
1563 | rx_ring->next_to_clean = i; | |
1564 | if (cleaned_count) | |
1565 | pch_gbe_alloc_rx_buffers(adapter, rx_ring, cleaned_count); | |
1566 | return cleaned; | |
1567 | } | |
1568 | ||
1569 | /** | |
1570 | * pch_gbe_setup_tx_resources - Allocate Tx resources (Descriptors) | |
1571 | * @adapter: Board private structure | |
1572 | * @tx_ring: Tx descriptor ring (for a specific queue) to setup | |
1573 | * Returns | |
1574 | * 0: Successfully | |
1575 | * Negative value: Failed | |
1576 | */ | |
1577 | int pch_gbe_setup_tx_resources(struct pch_gbe_adapter *adapter, | |
1578 | struct pch_gbe_tx_ring *tx_ring) | |
1579 | { | |
1580 | struct pci_dev *pdev = adapter->pdev; | |
1581 | struct pch_gbe_tx_desc *tx_desc; | |
1582 | int size; | |
1583 | int desNo; | |
1584 | ||
1585 | size = (int)sizeof(struct pch_gbe_buffer) * tx_ring->count; | |
89bf67f1 | 1586 | tx_ring->buffer_info = vzalloc(size); |
77555ee7 | 1587 | if (!tx_ring->buffer_info) { |
25985edc | 1588 | pr_err("Unable to allocate memory for the buffer information\n"); |
77555ee7 MO |
1589 | return -ENOMEM; |
1590 | } | |
77555ee7 MO |
1591 | |
1592 | tx_ring->size = tx_ring->count * (int)sizeof(struct pch_gbe_tx_desc); | |
1593 | ||
1594 | tx_ring->desc = dma_alloc_coherent(&pdev->dev, tx_ring->size, | |
1595 | &tx_ring->dma, GFP_KERNEL); | |
1596 | if (!tx_ring->desc) { | |
1597 | vfree(tx_ring->buffer_info); | |
1598 | pr_err("Unable to allocate memory for the transmit descriptor ring\n"); | |
1599 | return -ENOMEM; | |
1600 | } | |
1601 | memset(tx_ring->desc, 0, tx_ring->size); | |
1602 | ||
1603 | tx_ring->next_to_use = 0; | |
1604 | tx_ring->next_to_clean = 0; | |
1605 | spin_lock_init(&tx_ring->tx_lock); | |
1606 | ||
1607 | for (desNo = 0; desNo < tx_ring->count; desNo++) { | |
1608 | tx_desc = PCH_GBE_TX_DESC(*tx_ring, desNo); | |
1609 | tx_desc->gbec_status = DSC_INIT16; | |
1610 | } | |
1611 | pr_debug("tx_ring->desc = 0x%p tx_ring->dma = 0x%08llx\n" | |
1612 | "next_to_clean = 0x%08x next_to_use = 0x%08x\n", | |
1613 | tx_ring->desc, (unsigned long long)tx_ring->dma, | |
1614 | tx_ring->next_to_clean, tx_ring->next_to_use); | |
1615 | return 0; | |
1616 | } | |
1617 | ||
1618 | /** | |
1619 | * pch_gbe_setup_rx_resources - Allocate Rx resources (Descriptors) | |
1620 | * @adapter: Board private structure | |
1621 | * @rx_ring: Rx descriptor ring (for a specific queue) to setup | |
1622 | * Returns | |
1623 | * 0: Successfully | |
1624 | * Negative value: Failed | |
1625 | */ | |
1626 | int pch_gbe_setup_rx_resources(struct pch_gbe_adapter *adapter, | |
1627 | struct pch_gbe_rx_ring *rx_ring) | |
1628 | { | |
1629 | struct pci_dev *pdev = adapter->pdev; | |
1630 | struct pch_gbe_rx_desc *rx_desc; | |
1631 | int size; | |
1632 | int desNo; | |
1633 | ||
1634 | size = (int)sizeof(struct pch_gbe_buffer) * rx_ring->count; | |
89bf67f1 | 1635 | rx_ring->buffer_info = vzalloc(size); |
77555ee7 MO |
1636 | if (!rx_ring->buffer_info) { |
1637 | pr_err("Unable to allocate memory for the receive descriptor ring\n"); | |
1638 | return -ENOMEM; | |
1639 | } | |
77555ee7 MO |
1640 | rx_ring->size = rx_ring->count * (int)sizeof(struct pch_gbe_rx_desc); |
1641 | rx_ring->desc = dma_alloc_coherent(&pdev->dev, rx_ring->size, | |
1642 | &rx_ring->dma, GFP_KERNEL); | |
1643 | ||
1644 | if (!rx_ring->desc) { | |
1645 | pr_err("Unable to allocate memory for the receive descriptor ring\n"); | |
1646 | vfree(rx_ring->buffer_info); | |
1647 | return -ENOMEM; | |
1648 | } | |
1649 | memset(rx_ring->desc, 0, rx_ring->size); | |
1650 | rx_ring->next_to_clean = 0; | |
1651 | rx_ring->next_to_use = 0; | |
1652 | for (desNo = 0; desNo < rx_ring->count; desNo++) { | |
1653 | rx_desc = PCH_GBE_RX_DESC(*rx_ring, desNo); | |
1654 | rx_desc->gbec_status = DSC_INIT16; | |
1655 | } | |
1656 | pr_debug("rx_ring->desc = 0x%p rx_ring->dma = 0x%08llx " | |
1657 | "next_to_clean = 0x%08x next_to_use = 0x%08x\n", | |
1658 | rx_ring->desc, (unsigned long long)rx_ring->dma, | |
1659 | rx_ring->next_to_clean, rx_ring->next_to_use); | |
1660 | return 0; | |
1661 | } | |
1662 | ||
1663 | /** | |
1664 | * pch_gbe_free_tx_resources - Free Tx Resources | |
1665 | * @adapter: Board private structure | |
1666 | * @tx_ring: Tx descriptor ring for a specific queue | |
1667 | */ | |
1668 | void pch_gbe_free_tx_resources(struct pch_gbe_adapter *adapter, | |
1669 | struct pch_gbe_tx_ring *tx_ring) | |
1670 | { | |
1671 | struct pci_dev *pdev = adapter->pdev; | |
1672 | ||
1673 | pch_gbe_clean_tx_ring(adapter, tx_ring); | |
1674 | vfree(tx_ring->buffer_info); | |
1675 | tx_ring->buffer_info = NULL; | |
1676 | pci_free_consistent(pdev, tx_ring->size, tx_ring->desc, tx_ring->dma); | |
1677 | tx_ring->desc = NULL; | |
1678 | } | |
1679 | ||
1680 | /** | |
1681 | * pch_gbe_free_rx_resources - Free Rx Resources | |
1682 | * @adapter: Board private structure | |
1683 | * @rx_ring: Ring to clean the resources from | |
1684 | */ | |
1685 | void pch_gbe_free_rx_resources(struct pch_gbe_adapter *adapter, | |
1686 | struct pch_gbe_rx_ring *rx_ring) | |
1687 | { | |
1688 | struct pci_dev *pdev = adapter->pdev; | |
1689 | ||
1690 | pch_gbe_clean_rx_ring(adapter, rx_ring); | |
1691 | vfree(rx_ring->buffer_info); | |
1692 | rx_ring->buffer_info = NULL; | |
1693 | pci_free_consistent(pdev, rx_ring->size, rx_ring->desc, rx_ring->dma); | |
1694 | rx_ring->desc = NULL; | |
1695 | } | |
1696 | ||
1697 | /** | |
1698 | * pch_gbe_request_irq - Allocate an interrupt line | |
1699 | * @adapter: Board private structure | |
1700 | * Returns | |
1701 | * 0: Successfully | |
1702 | * Negative value: Failed | |
1703 | */ | |
1704 | static int pch_gbe_request_irq(struct pch_gbe_adapter *adapter) | |
1705 | { | |
1706 | struct net_device *netdev = adapter->netdev; | |
1707 | int err; | |
1708 | int flags; | |
1709 | ||
1710 | flags = IRQF_SHARED; | |
1711 | adapter->have_msi = false; | |
1712 | err = pci_enable_msi(adapter->pdev); | |
1713 | pr_debug("call pci_enable_msi\n"); | |
1714 | if (err) { | |
1715 | pr_debug("call pci_enable_msi - Error: %d\n", err); | |
1716 | } else { | |
1717 | flags = 0; | |
1718 | adapter->have_msi = true; | |
1719 | } | |
1720 | err = request_irq(adapter->pdev->irq, &pch_gbe_intr, | |
1721 | flags, netdev->name, netdev); | |
1722 | if (err) | |
1723 | pr_err("Unable to allocate interrupt Error: %d\n", err); | |
1724 | pr_debug("adapter->have_msi : %d flags : 0x%04x return : 0x%04x\n", | |
1725 | adapter->have_msi, flags, err); | |
1726 | return err; | |
1727 | } | |
1728 | ||
1729 | ||
1730 | static void pch_gbe_set_multi(struct net_device *netdev); | |
1731 | /** | |
1732 | * pch_gbe_up - Up GbE network device | |
1733 | * @adapter: Board private structure | |
1734 | * Returns | |
1735 | * 0: Successfully | |
1736 | * Negative value: Failed | |
1737 | */ | |
1738 | int pch_gbe_up(struct pch_gbe_adapter *adapter) | |
1739 | { | |
1740 | struct net_device *netdev = adapter->netdev; | |
1741 | struct pch_gbe_tx_ring *tx_ring = adapter->tx_ring; | |
1742 | struct pch_gbe_rx_ring *rx_ring = adapter->rx_ring; | |
1743 | int err; | |
1744 | ||
1745 | /* hardware has been reset, we need to reload some things */ | |
1746 | pch_gbe_set_multi(netdev); | |
1747 | ||
1748 | pch_gbe_setup_tctl(adapter); | |
1749 | pch_gbe_configure_tx(adapter); | |
1750 | pch_gbe_setup_rctl(adapter); | |
1751 | pch_gbe_configure_rx(adapter); | |
1752 | ||
1753 | err = pch_gbe_request_irq(adapter); | |
1754 | if (err) { | |
1755 | pr_err("Error: can't bring device up\n"); | |
1756 | return err; | |
1757 | } | |
124d770a TO |
1758 | err = pch_gbe_alloc_rx_buffers_pool(adapter, rx_ring, rx_ring->count); |
1759 | if (err) { | |
1760 | pr_err("Error: can't bring device up\n"); | |
1761 | return err; | |
1762 | } | |
77555ee7 MO |
1763 | pch_gbe_alloc_tx_buffers(adapter, tx_ring); |
1764 | pch_gbe_alloc_rx_buffers(adapter, rx_ring, rx_ring->count); | |
1765 | adapter->tx_queue_len = netdev->tx_queue_len; | |
5229d87e | 1766 | pch_gbe_start_receive(&adapter->hw); |
77555ee7 MO |
1767 | |
1768 | mod_timer(&adapter->watchdog_timer, jiffies); | |
1769 | ||
1770 | napi_enable(&adapter->napi); | |
1771 | pch_gbe_irq_enable(adapter); | |
1772 | netif_start_queue(adapter->netdev); | |
1773 | ||
1774 | return 0; | |
1775 | } | |
1776 | ||
1777 | /** | |
1778 | * pch_gbe_down - Down GbE network device | |
1779 | * @adapter: Board private structure | |
1780 | */ | |
1781 | void pch_gbe_down(struct pch_gbe_adapter *adapter) | |
1782 | { | |
1783 | struct net_device *netdev = adapter->netdev; | |
124d770a | 1784 | struct pch_gbe_rx_ring *rx_ring = adapter->rx_ring; |
77555ee7 MO |
1785 | |
1786 | /* signal that we're down so the interrupt handler does not | |
1787 | * reschedule our watchdog timer */ | |
1788 | napi_disable(&adapter->napi); | |
1789 | atomic_set(&adapter->irq_sem, 0); | |
1790 | ||
1791 | pch_gbe_irq_disable(adapter); | |
1792 | pch_gbe_free_irq(adapter); | |
1793 | ||
1794 | del_timer_sync(&adapter->watchdog_timer); | |
1795 | ||
1796 | netdev->tx_queue_len = adapter->tx_queue_len; | |
1797 | netif_carrier_off(netdev); | |
1798 | netif_stop_queue(netdev); | |
1799 | ||
1800 | pch_gbe_reset(adapter); | |
1801 | pch_gbe_clean_tx_ring(adapter, adapter->tx_ring); | |
1802 | pch_gbe_clean_rx_ring(adapter, adapter->rx_ring); | |
124d770a TO |
1803 | |
1804 | pci_free_consistent(adapter->pdev, rx_ring->rx_buff_pool_size, | |
1805 | rx_ring->rx_buff_pool, rx_ring->rx_buff_pool_logic); | |
1806 | rx_ring->rx_buff_pool_logic = 0; | |
1807 | rx_ring->rx_buff_pool_size = 0; | |
1808 | rx_ring->rx_buff_pool = NULL; | |
77555ee7 MO |
1809 | } |
1810 | ||
1811 | /** | |
1812 | * pch_gbe_sw_init - Initialize general software structures (struct pch_gbe_adapter) | |
1813 | * @adapter: Board private structure to initialize | |
1814 | * Returns | |
1815 | * 0: Successfully | |
1816 | * Negative value: Failed | |
1817 | */ | |
1818 | static int pch_gbe_sw_init(struct pch_gbe_adapter *adapter) | |
1819 | { | |
1820 | struct pch_gbe_hw *hw = &adapter->hw; | |
1821 | struct net_device *netdev = adapter->netdev; | |
1822 | ||
1823 | adapter->rx_buffer_len = PCH_GBE_FRAME_SIZE_2048; | |
1824 | hw->mac.max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN; | |
1825 | hw->mac.min_frame_size = ETH_ZLEN + ETH_FCS_LEN; | |
1826 | ||
1827 | /* Initialize the hardware-specific values */ | |
1828 | if (pch_gbe_hal_setup_init_funcs(hw)) { | |
1829 | pr_err("Hardware Initialization Failure\n"); | |
1830 | return -EIO; | |
1831 | } | |
1832 | if (pch_gbe_alloc_queues(adapter)) { | |
1833 | pr_err("Unable to allocate memory for queues\n"); | |
1834 | return -ENOMEM; | |
1835 | } | |
1836 | spin_lock_init(&adapter->hw.miim_lock); | |
1837 | spin_lock_init(&adapter->tx_queue_lock); | |
1838 | spin_lock_init(&adapter->stats_lock); | |
1839 | spin_lock_init(&adapter->ethtool_lock); | |
1840 | atomic_set(&adapter->irq_sem, 0); | |
1841 | pch_gbe_irq_disable(adapter); | |
1842 | ||
1843 | pch_gbe_init_stats(adapter); | |
1844 | ||
1845 | pr_debug("rx_buffer_len : %d mac.min_frame_size : %d mac.max_frame_size : %d\n", | |
1846 | (u32) adapter->rx_buffer_len, | |
1847 | hw->mac.min_frame_size, hw->mac.max_frame_size); | |
1848 | return 0; | |
1849 | } | |
1850 | ||
1851 | /** | |
1852 | * pch_gbe_open - Called when a network interface is made active | |
1853 | * @netdev: Network interface device structure | |
1854 | * Returns | |
1855 | * 0: Successfully | |
1856 | * Negative value: Failed | |
1857 | */ | |
1858 | static int pch_gbe_open(struct net_device *netdev) | |
1859 | { | |
1860 | struct pch_gbe_adapter *adapter = netdev_priv(netdev); | |
1861 | struct pch_gbe_hw *hw = &adapter->hw; | |
1862 | int err; | |
1863 | ||
1864 | /* allocate transmit descriptors */ | |
1865 | err = pch_gbe_setup_tx_resources(adapter, adapter->tx_ring); | |
1866 | if (err) | |
1867 | goto err_setup_tx; | |
1868 | /* allocate receive descriptors */ | |
1869 | err = pch_gbe_setup_rx_resources(adapter, adapter->rx_ring); | |
1870 | if (err) | |
1871 | goto err_setup_rx; | |
1872 | pch_gbe_hal_power_up_phy(hw); | |
1873 | err = pch_gbe_up(adapter); | |
1874 | if (err) | |
1875 | goto err_up; | |
1876 | pr_debug("Success End\n"); | |
1877 | return 0; | |
1878 | ||
1879 | err_up: | |
1880 | if (!adapter->wake_up_evt) | |
1881 | pch_gbe_hal_power_down_phy(hw); | |
1882 | pch_gbe_free_rx_resources(adapter, adapter->rx_ring); | |
1883 | err_setup_rx: | |
1884 | pch_gbe_free_tx_resources(adapter, adapter->tx_ring); | |
1885 | err_setup_tx: | |
1886 | pch_gbe_reset(adapter); | |
1887 | pr_err("Error End\n"); | |
1888 | return err; | |
1889 | } | |
1890 | ||
1891 | /** | |
1892 | * pch_gbe_stop - Disables a network interface | |
1893 | * @netdev: Network interface device structure | |
1894 | * Returns | |
1895 | * 0: Successfully | |
1896 | */ | |
1897 | static int pch_gbe_stop(struct net_device *netdev) | |
1898 | { | |
1899 | struct pch_gbe_adapter *adapter = netdev_priv(netdev); | |
1900 | struct pch_gbe_hw *hw = &adapter->hw; | |
1901 | ||
1902 | pch_gbe_down(adapter); | |
1903 | if (!adapter->wake_up_evt) | |
1904 | pch_gbe_hal_power_down_phy(hw); | |
1905 | pch_gbe_free_tx_resources(adapter, adapter->tx_ring); | |
1906 | pch_gbe_free_rx_resources(adapter, adapter->rx_ring); | |
1907 | return 0; | |
1908 | } | |
1909 | ||
1910 | /** | |
1911 | * pch_gbe_xmit_frame - Packet transmitting start | |
1912 | * @skb: Socket buffer structure | |
1913 | * @netdev: Network interface device structure | |
1914 | * Returns | |
1915 | * - NETDEV_TX_OK: Normal end | |
1916 | * - NETDEV_TX_BUSY: Error end | |
1917 | */ | |
1918 | static int pch_gbe_xmit_frame(struct sk_buff *skb, struct net_device *netdev) | |
1919 | { | |
1920 | struct pch_gbe_adapter *adapter = netdev_priv(netdev); | |
1921 | struct pch_gbe_tx_ring *tx_ring = adapter->tx_ring; | |
1922 | unsigned long flags; | |
1923 | ||
1924 | if (unlikely(skb->len > (adapter->hw.mac.max_frame_size - 4))) { | |
77555ee7 MO |
1925 | pr_err("Transfer length Error: skb len: %d > max: %d\n", |
1926 | skb->len, adapter->hw.mac.max_frame_size); | |
419c2046 | 1927 | dev_kfree_skb_any(skb); |
77555ee7 MO |
1928 | adapter->stats.tx_length_errors++; |
1929 | return NETDEV_TX_OK; | |
1930 | } | |
1931 | if (!spin_trylock_irqsave(&tx_ring->tx_lock, flags)) { | |
1932 | /* Collision - tell upper layer to requeue */ | |
1933 | return NETDEV_TX_LOCKED; | |
1934 | } | |
1935 | if (unlikely(!PCH_GBE_DESC_UNUSED(tx_ring))) { | |
1936 | netif_stop_queue(netdev); | |
1937 | spin_unlock_irqrestore(&tx_ring->tx_lock, flags); | |
1938 | pr_debug("Return : BUSY next_to use : 0x%08x next_to clean : 0x%08x\n", | |
1939 | tx_ring->next_to_use, tx_ring->next_to_clean); | |
1940 | return NETDEV_TX_BUSY; | |
1941 | } | |
1942 | spin_unlock_irqrestore(&tx_ring->tx_lock, flags); | |
1943 | ||
1944 | /* CRC,ITAG no support */ | |
1945 | pch_gbe_tx_queue(adapter, tx_ring, skb); | |
1946 | return NETDEV_TX_OK; | |
1947 | } | |
1948 | ||
1949 | /** | |
1950 | * pch_gbe_get_stats - Get System Network Statistics | |
1951 | * @netdev: Network interface device structure | |
1952 | * Returns: The current stats | |
1953 | */ | |
1954 | static struct net_device_stats *pch_gbe_get_stats(struct net_device *netdev) | |
1955 | { | |
1956 | /* only return the current stats */ | |
1957 | return &netdev->stats; | |
1958 | } | |
1959 | ||
1960 | /** | |
1961 | * pch_gbe_set_multi - Multicast and Promiscuous mode set | |
1962 | * @netdev: Network interface device structure | |
1963 | */ | |
1964 | static void pch_gbe_set_multi(struct net_device *netdev) | |
1965 | { | |
1966 | struct pch_gbe_adapter *adapter = netdev_priv(netdev); | |
1967 | struct pch_gbe_hw *hw = &adapter->hw; | |
1968 | struct netdev_hw_addr *ha; | |
1969 | u8 *mta_list; | |
1970 | u32 rctl; | |
1971 | int i; | |
1972 | int mc_count; | |
1973 | ||
1974 | pr_debug("netdev->flags : 0x%08x\n", netdev->flags); | |
1975 | ||
1976 | /* Check for Promiscuous and All Multicast modes */ | |
1977 | rctl = ioread32(&hw->reg->RX_MODE); | |
1978 | mc_count = netdev_mc_count(netdev); | |
1979 | if ((netdev->flags & IFF_PROMISC)) { | |
1980 | rctl &= ~PCH_GBE_ADD_FIL_EN; | |
1981 | rctl &= ~PCH_GBE_MLT_FIL_EN; | |
1982 | } else if ((netdev->flags & IFF_ALLMULTI)) { | |
1983 | /* all the multicasting receive permissions */ | |
1984 | rctl |= PCH_GBE_ADD_FIL_EN; | |
1985 | rctl &= ~PCH_GBE_MLT_FIL_EN; | |
1986 | } else { | |
1987 | if (mc_count >= PCH_GBE_MAR_ENTRIES) { | |
1988 | /* all the multicasting receive permissions */ | |
1989 | rctl |= PCH_GBE_ADD_FIL_EN; | |
1990 | rctl &= ~PCH_GBE_MLT_FIL_EN; | |
1991 | } else { | |
1992 | rctl |= (PCH_GBE_ADD_FIL_EN | PCH_GBE_MLT_FIL_EN); | |
1993 | } | |
1994 | } | |
1995 | iowrite32(rctl, &hw->reg->RX_MODE); | |
1996 | ||
1997 | if (mc_count >= PCH_GBE_MAR_ENTRIES) | |
1998 | return; | |
1999 | mta_list = kmalloc(mc_count * ETH_ALEN, GFP_ATOMIC); | |
2000 | if (!mta_list) | |
2001 | return; | |
2002 | ||
2003 | /* The shared function expects a packed array of only addresses. */ | |
2004 | i = 0; | |
2005 | netdev_for_each_mc_addr(ha, netdev) { | |
2006 | if (i == mc_count) | |
2007 | break; | |
2008 | memcpy(mta_list + (i++ * ETH_ALEN), &ha->addr, ETH_ALEN); | |
2009 | } | |
2010 | pch_gbe_mac_mc_addr_list_update(hw, mta_list, i, 1, | |
2011 | PCH_GBE_MAR_ENTRIES); | |
2012 | kfree(mta_list); | |
2013 | ||
2014 | pr_debug("RX_MODE reg(check bit31,30 ADD,MLT) : 0x%08x netdev->mc_count : 0x%08x\n", | |
2015 | ioread32(&hw->reg->RX_MODE), mc_count); | |
2016 | } | |
2017 | ||
2018 | /** | |
2019 | * pch_gbe_set_mac - Change the Ethernet Address of the NIC | |
2020 | * @netdev: Network interface device structure | |
2021 | * @addr: Pointer to an address structure | |
2022 | * Returns | |
2023 | * 0: Successfully | |
2024 | * -EADDRNOTAVAIL: Failed | |
2025 | */ | |
2026 | static int pch_gbe_set_mac(struct net_device *netdev, void *addr) | |
2027 | { | |
2028 | struct pch_gbe_adapter *adapter = netdev_priv(netdev); | |
2029 | struct sockaddr *skaddr = addr; | |
2030 | int ret_val; | |
2031 | ||
2032 | if (!is_valid_ether_addr(skaddr->sa_data)) { | |
2033 | ret_val = -EADDRNOTAVAIL; | |
2034 | } else { | |
2035 | memcpy(netdev->dev_addr, skaddr->sa_data, netdev->addr_len); | |
2036 | memcpy(adapter->hw.mac.addr, skaddr->sa_data, netdev->addr_len); | |
2037 | pch_gbe_mac_mar_set(&adapter->hw, adapter->hw.mac.addr, 0); | |
2038 | ret_val = 0; | |
2039 | } | |
2040 | pr_debug("ret_val : 0x%08x\n", ret_val); | |
2041 | pr_debug("dev_addr : %pM\n", netdev->dev_addr); | |
2042 | pr_debug("mac_addr : %pM\n", adapter->hw.mac.addr); | |
2043 | pr_debug("MAC_ADR1AB reg : 0x%08x 0x%08x\n", | |
2044 | ioread32(&adapter->hw.reg->mac_adr[0].high), | |
2045 | ioread32(&adapter->hw.reg->mac_adr[0].low)); | |
2046 | return ret_val; | |
2047 | } | |
2048 | ||
2049 | /** | |
2050 | * pch_gbe_change_mtu - Change the Maximum Transfer Unit | |
2051 | * @netdev: Network interface device structure | |
2052 | * @new_mtu: New value for maximum frame size | |
2053 | * Returns | |
2054 | * 0: Successfully | |
2055 | * -EINVAL: Failed | |
2056 | */ | |
2057 | static int pch_gbe_change_mtu(struct net_device *netdev, int new_mtu) | |
2058 | { | |
2059 | struct pch_gbe_adapter *adapter = netdev_priv(netdev); | |
2060 | int max_frame; | |
124d770a TO |
2061 | unsigned long old_rx_buffer_len = adapter->rx_buffer_len; |
2062 | int err; | |
77555ee7 MO |
2063 | |
2064 | max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN; | |
2065 | if ((max_frame < ETH_ZLEN + ETH_FCS_LEN) || | |
2066 | (max_frame > PCH_GBE_MAX_JUMBO_FRAME_SIZE)) { | |
2067 | pr_err("Invalid MTU setting\n"); | |
2068 | return -EINVAL; | |
2069 | } | |
2070 | if (max_frame <= PCH_GBE_FRAME_SIZE_2048) | |
2071 | adapter->rx_buffer_len = PCH_GBE_FRAME_SIZE_2048; | |
2072 | else if (max_frame <= PCH_GBE_FRAME_SIZE_4096) | |
2073 | adapter->rx_buffer_len = PCH_GBE_FRAME_SIZE_4096; | |
2074 | else if (max_frame <= PCH_GBE_FRAME_SIZE_8192) | |
2075 | adapter->rx_buffer_len = PCH_GBE_FRAME_SIZE_8192; | |
2076 | else | |
124d770a TO |
2077 | adapter->rx_buffer_len = PCH_GBE_MAX_RX_BUFFER_SIZE; |
2078 | ||
2079 | if (netif_running(netdev)) { | |
2080 | pch_gbe_down(adapter); | |
2081 | err = pch_gbe_up(adapter); | |
2082 | if (err) { | |
2083 | adapter->rx_buffer_len = old_rx_buffer_len; | |
2084 | pch_gbe_up(adapter); | |
2085 | return -ENOMEM; | |
2086 | } else { | |
2087 | netdev->mtu = new_mtu; | |
2088 | adapter->hw.mac.max_frame_size = max_frame; | |
2089 | } | |
2090 | } else { | |
77555ee7 | 2091 | pch_gbe_reset(adapter); |
124d770a TO |
2092 | netdev->mtu = new_mtu; |
2093 | adapter->hw.mac.max_frame_size = max_frame; | |
2094 | } | |
77555ee7 MO |
2095 | |
2096 | pr_debug("max_frame : %d rx_buffer_len : %d mtu : %d max_frame_size : %d\n", | |
2097 | max_frame, (u32) adapter->rx_buffer_len, netdev->mtu, | |
2098 | adapter->hw.mac.max_frame_size); | |
2099 | return 0; | |
2100 | } | |
2101 | ||
756a6b03 MM |
2102 | /** |
2103 | * pch_gbe_set_features - Reset device after features changed | |
2104 | * @netdev: Network interface device structure | |
2105 | * @features: New features | |
2106 | * Returns | |
2107 | * 0: HW state updated successfully | |
2108 | */ | |
2109 | static int pch_gbe_set_features(struct net_device *netdev, u32 features) | |
2110 | { | |
2111 | struct pch_gbe_adapter *adapter = netdev_priv(netdev); | |
2112 | u32 changed = features ^ netdev->features; | |
2113 | ||
2114 | if (!(changed & NETIF_F_RXCSUM)) | |
2115 | return 0; | |
2116 | ||
2117 | if (netif_running(netdev)) | |
2118 | pch_gbe_reinit_locked(adapter); | |
2119 | else | |
2120 | pch_gbe_reset(adapter); | |
2121 | ||
2122 | return 0; | |
2123 | } | |
2124 | ||
77555ee7 MO |
2125 | /** |
2126 | * pch_gbe_ioctl - Controls register through a MII interface | |
2127 | * @netdev: Network interface device structure | |
2128 | * @ifr: Pointer to ifr structure | |
2129 | * @cmd: Control command | |
2130 | * Returns | |
2131 | * 0: Successfully | |
2132 | * Negative value: Failed | |
2133 | */ | |
2134 | static int pch_gbe_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) | |
2135 | { | |
2136 | struct pch_gbe_adapter *adapter = netdev_priv(netdev); | |
2137 | ||
2138 | pr_debug("cmd : 0x%04x\n", cmd); | |
2139 | ||
2140 | return generic_mii_ioctl(&adapter->mii, if_mii(ifr), cmd, NULL); | |
2141 | } | |
2142 | ||
2143 | /** | |
2144 | * pch_gbe_tx_timeout - Respond to a Tx Hang | |
2145 | * @netdev: Network interface device structure | |
2146 | */ | |
2147 | static void pch_gbe_tx_timeout(struct net_device *netdev) | |
2148 | { | |
2149 | struct pch_gbe_adapter *adapter = netdev_priv(netdev); | |
2150 | ||
2151 | /* Do the reset outside of interrupt context */ | |
2152 | adapter->stats.tx_timeout_count++; | |
2153 | schedule_work(&adapter->reset_task); | |
2154 | } | |
2155 | ||
2156 | /** | |
2157 | * pch_gbe_napi_poll - NAPI receive and transfer polling callback | |
2158 | * @napi: Pointer of polling device struct | |
2159 | * @budget: The maximum number of a packet | |
2160 | * Returns | |
2161 | * false: Exit the polling mode | |
2162 | * true: Continue the polling mode | |
2163 | */ | |
2164 | static int pch_gbe_napi_poll(struct napi_struct *napi, int budget) | |
2165 | { | |
2166 | struct pch_gbe_adapter *adapter = | |
2167 | container_of(napi, struct pch_gbe_adapter, napi); | |
2168 | struct net_device *netdev = adapter->netdev; | |
2169 | int work_done = 0; | |
2170 | bool poll_end_flag = false; | |
2171 | bool cleaned = false; | |
124d770a | 2172 | u32 int_en; |
77555ee7 MO |
2173 | |
2174 | pr_debug("budget : %d\n", budget); | |
2175 | ||
2176 | /* Keep link state information with original netdev */ | |
2177 | if (!netif_carrier_ok(netdev)) { | |
2178 | poll_end_flag = true; | |
2179 | } else { | |
77555ee7 | 2180 | pch_gbe_clean_rx(adapter, adapter->rx_ring, &work_done, budget); |
124d770a TO |
2181 | if (adapter->rx_stop_flag) { |
2182 | adapter->rx_stop_flag = false; | |
2183 | pch_gbe_start_receive(&adapter->hw); | |
2184 | int_en = ioread32(&adapter->hw.reg->INT_EN); | |
2185 | iowrite32((int_en | PCH_GBE_INT_RX_FIFO_ERR), | |
2186 | &adapter->hw.reg->INT_EN); | |
2187 | } | |
2188 | cleaned = pch_gbe_clean_tx(adapter, adapter->tx_ring); | |
77555ee7 MO |
2189 | |
2190 | if (cleaned) | |
2191 | work_done = budget; | |
2192 | /* If no Tx and not enough Rx work done, | |
2193 | * exit the polling mode | |
2194 | */ | |
2195 | if ((work_done < budget) || !netif_running(netdev)) | |
2196 | poll_end_flag = true; | |
2197 | } | |
2198 | ||
2199 | if (poll_end_flag) { | |
2200 | napi_complete(napi); | |
2201 | pch_gbe_irq_enable(adapter); | |
2202 | } | |
2203 | ||
2204 | pr_debug("poll_end_flag : %d work_done : %d budget : %d\n", | |
2205 | poll_end_flag, work_done, budget); | |
2206 | ||
2207 | return work_done; | |
2208 | } | |
2209 | ||
2210 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
2211 | /** | |
2212 | * pch_gbe_netpoll - Used by things like netconsole to send skbs | |
2213 | * @netdev: Network interface device structure | |
2214 | */ | |
2215 | static void pch_gbe_netpoll(struct net_device *netdev) | |
2216 | { | |
2217 | struct pch_gbe_adapter *adapter = netdev_priv(netdev); | |
2218 | ||
2219 | disable_irq(adapter->pdev->irq); | |
2220 | pch_gbe_intr(adapter->pdev->irq, netdev); | |
2221 | enable_irq(adapter->pdev->irq); | |
2222 | } | |
2223 | #endif | |
2224 | ||
2225 | static const struct net_device_ops pch_gbe_netdev_ops = { | |
2226 | .ndo_open = pch_gbe_open, | |
2227 | .ndo_stop = pch_gbe_stop, | |
2228 | .ndo_start_xmit = pch_gbe_xmit_frame, | |
2229 | .ndo_get_stats = pch_gbe_get_stats, | |
2230 | .ndo_set_mac_address = pch_gbe_set_mac, | |
2231 | .ndo_tx_timeout = pch_gbe_tx_timeout, | |
2232 | .ndo_change_mtu = pch_gbe_change_mtu, | |
756a6b03 | 2233 | .ndo_set_features = pch_gbe_set_features, |
77555ee7 MO |
2234 | .ndo_do_ioctl = pch_gbe_ioctl, |
2235 | .ndo_set_multicast_list = &pch_gbe_set_multi, | |
2236 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
2237 | .ndo_poll_controller = pch_gbe_netpoll, | |
2238 | #endif | |
2239 | }; | |
2240 | ||
2241 | static pci_ers_result_t pch_gbe_io_error_detected(struct pci_dev *pdev, | |
2242 | pci_channel_state_t state) | |
2243 | { | |
2244 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2245 | struct pch_gbe_adapter *adapter = netdev_priv(netdev); | |
2246 | ||
2247 | netif_device_detach(netdev); | |
2248 | if (netif_running(netdev)) | |
2249 | pch_gbe_down(adapter); | |
2250 | pci_disable_device(pdev); | |
2251 | /* Request a slot slot reset. */ | |
2252 | return PCI_ERS_RESULT_NEED_RESET; | |
2253 | } | |
2254 | ||
2255 | static pci_ers_result_t pch_gbe_io_slot_reset(struct pci_dev *pdev) | |
2256 | { | |
2257 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2258 | struct pch_gbe_adapter *adapter = netdev_priv(netdev); | |
2259 | struct pch_gbe_hw *hw = &adapter->hw; | |
2260 | ||
2261 | if (pci_enable_device(pdev)) { | |
2262 | pr_err("Cannot re-enable PCI device after reset\n"); | |
2263 | return PCI_ERS_RESULT_DISCONNECT; | |
2264 | } | |
2265 | pci_set_master(pdev); | |
2266 | pci_enable_wake(pdev, PCI_D0, 0); | |
2267 | pch_gbe_hal_power_up_phy(hw); | |
2268 | pch_gbe_reset(adapter); | |
2269 | /* Clear wake up status */ | |
2270 | pch_gbe_mac_set_wol_event(hw, 0); | |
2271 | ||
2272 | return PCI_ERS_RESULT_RECOVERED; | |
2273 | } | |
2274 | ||
2275 | static void pch_gbe_io_resume(struct pci_dev *pdev) | |
2276 | { | |
2277 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2278 | struct pch_gbe_adapter *adapter = netdev_priv(netdev); | |
2279 | ||
2280 | if (netif_running(netdev)) { | |
2281 | if (pch_gbe_up(adapter)) { | |
2282 | pr_debug("can't bring device back up after reset\n"); | |
2283 | return; | |
2284 | } | |
2285 | } | |
2286 | netif_device_attach(netdev); | |
2287 | } | |
2288 | ||
2289 | static int __pch_gbe_suspend(struct pci_dev *pdev) | |
2290 | { | |
2291 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2292 | struct pch_gbe_adapter *adapter = netdev_priv(netdev); | |
2293 | struct pch_gbe_hw *hw = &adapter->hw; | |
2294 | u32 wufc = adapter->wake_up_evt; | |
2295 | int retval = 0; | |
2296 | ||
2297 | netif_device_detach(netdev); | |
2298 | if (netif_running(netdev)) | |
2299 | pch_gbe_down(adapter); | |
2300 | if (wufc) { | |
2301 | pch_gbe_set_multi(netdev); | |
2302 | pch_gbe_setup_rctl(adapter); | |
2303 | pch_gbe_configure_rx(adapter); | |
2304 | pch_gbe_set_rgmii_ctrl(adapter, hw->mac.link_speed, | |
2305 | hw->mac.link_duplex); | |
2306 | pch_gbe_set_mode(adapter, hw->mac.link_speed, | |
2307 | hw->mac.link_duplex); | |
2308 | pch_gbe_mac_set_wol_event(hw, wufc); | |
2309 | pci_disable_device(pdev); | |
2310 | } else { | |
2311 | pch_gbe_hal_power_down_phy(hw); | |
2312 | pch_gbe_mac_set_wol_event(hw, wufc); | |
2313 | pci_disable_device(pdev); | |
2314 | } | |
2315 | return retval; | |
2316 | } | |
2317 | ||
2318 | #ifdef CONFIG_PM | |
2319 | static int pch_gbe_suspend(struct device *device) | |
2320 | { | |
2321 | struct pci_dev *pdev = to_pci_dev(device); | |
2322 | ||
2323 | return __pch_gbe_suspend(pdev); | |
2324 | } | |
2325 | ||
2326 | static int pch_gbe_resume(struct device *device) | |
2327 | { | |
2328 | struct pci_dev *pdev = to_pci_dev(device); | |
2329 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2330 | struct pch_gbe_adapter *adapter = netdev_priv(netdev); | |
2331 | struct pch_gbe_hw *hw = &adapter->hw; | |
2332 | u32 err; | |
2333 | ||
2334 | err = pci_enable_device(pdev); | |
2335 | if (err) { | |
2336 | pr_err("Cannot enable PCI device from suspend\n"); | |
2337 | return err; | |
2338 | } | |
2339 | pci_set_master(pdev); | |
2340 | pch_gbe_hal_power_up_phy(hw); | |
2341 | pch_gbe_reset(adapter); | |
2342 | /* Clear wake on lan control and status */ | |
2343 | pch_gbe_mac_set_wol_event(hw, 0); | |
2344 | ||
2345 | if (netif_running(netdev)) | |
2346 | pch_gbe_up(adapter); | |
2347 | netif_device_attach(netdev); | |
2348 | ||
2349 | return 0; | |
2350 | } | |
2351 | #endif /* CONFIG_PM */ | |
2352 | ||
2353 | static void pch_gbe_shutdown(struct pci_dev *pdev) | |
2354 | { | |
2355 | __pch_gbe_suspend(pdev); | |
2356 | if (system_state == SYSTEM_POWER_OFF) { | |
2357 | pci_wake_from_d3(pdev, true); | |
2358 | pci_set_power_state(pdev, PCI_D3hot); | |
2359 | } | |
2360 | } | |
2361 | ||
2362 | static void pch_gbe_remove(struct pci_dev *pdev) | |
2363 | { | |
2364 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2365 | struct pch_gbe_adapter *adapter = netdev_priv(netdev); | |
2366 | ||
2321f3b4 | 2367 | cancel_work_sync(&adapter->reset_task); |
77555ee7 MO |
2368 | unregister_netdev(netdev); |
2369 | ||
2370 | pch_gbe_hal_phy_hw_reset(&adapter->hw); | |
2371 | ||
2372 | kfree(adapter->tx_ring); | |
2373 | kfree(adapter->rx_ring); | |
2374 | ||
2375 | iounmap(adapter->hw.reg); | |
2376 | pci_release_regions(pdev); | |
2377 | free_netdev(netdev); | |
2378 | pci_disable_device(pdev); | |
2379 | } | |
2380 | ||
2381 | static int pch_gbe_probe(struct pci_dev *pdev, | |
2382 | const struct pci_device_id *pci_id) | |
2383 | { | |
2384 | struct net_device *netdev; | |
2385 | struct pch_gbe_adapter *adapter; | |
2386 | int ret; | |
2387 | ||
2388 | ret = pci_enable_device(pdev); | |
2389 | if (ret) | |
2390 | return ret; | |
2391 | ||
2392 | if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) | |
2393 | || pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64))) { | |
2394 | ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); | |
2395 | if (ret) { | |
2396 | ret = pci_set_consistent_dma_mask(pdev, | |
2397 | DMA_BIT_MASK(32)); | |
2398 | if (ret) { | |
2399 | dev_err(&pdev->dev, "ERR: No usable DMA " | |
2400 | "configuration, aborting\n"); | |
2401 | goto err_disable_device; | |
2402 | } | |
2403 | } | |
2404 | } | |
2405 | ||
2406 | ret = pci_request_regions(pdev, KBUILD_MODNAME); | |
2407 | if (ret) { | |
2408 | dev_err(&pdev->dev, | |
2409 | "ERR: Can't reserve PCI I/O and memory resources\n"); | |
2410 | goto err_disable_device; | |
2411 | } | |
2412 | pci_set_master(pdev); | |
2413 | ||
2414 | netdev = alloc_etherdev((int)sizeof(struct pch_gbe_adapter)); | |
2415 | if (!netdev) { | |
2416 | ret = -ENOMEM; | |
2417 | dev_err(&pdev->dev, | |
2418 | "ERR: Can't allocate and set up an Ethernet device\n"); | |
2419 | goto err_release_pci; | |
2420 | } | |
2421 | SET_NETDEV_DEV(netdev, &pdev->dev); | |
2422 | ||
2423 | pci_set_drvdata(pdev, netdev); | |
2424 | adapter = netdev_priv(netdev); | |
2425 | adapter->netdev = netdev; | |
2426 | adapter->pdev = pdev; | |
2427 | adapter->hw.back = adapter; | |
2428 | adapter->hw.reg = pci_iomap(pdev, PCH_GBE_PCI_BAR, 0); | |
2429 | if (!adapter->hw.reg) { | |
2430 | ret = -EIO; | |
2431 | dev_err(&pdev->dev, "Can't ioremap\n"); | |
2432 | goto err_free_netdev; | |
2433 | } | |
2434 | ||
2435 | netdev->netdev_ops = &pch_gbe_netdev_ops; | |
2436 | netdev->watchdog_timeo = PCH_GBE_WATCHDOG_PERIOD; | |
2437 | netif_napi_add(netdev, &adapter->napi, | |
2438 | pch_gbe_napi_poll, PCH_GBE_RX_WEIGHT); | |
756a6b03 MM |
2439 | netdev->hw_features = NETIF_F_RXCSUM | |
2440 | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM; | |
2441 | netdev->features = netdev->hw_features; | |
77555ee7 MO |
2442 | pch_gbe_set_ethtool_ops(netdev); |
2443 | ||
98200ec2 | 2444 | pch_gbe_mac_load_mac_addr(&adapter->hw); |
77555ee7 MO |
2445 | pch_gbe_mac_reset_hw(&adapter->hw); |
2446 | ||
2447 | /* setup the private structure */ | |
2448 | ret = pch_gbe_sw_init(adapter); | |
2449 | if (ret) | |
2450 | goto err_iounmap; | |
2451 | ||
2452 | /* Initialize PHY */ | |
2453 | ret = pch_gbe_init_phy(adapter); | |
2454 | if (ret) { | |
2455 | dev_err(&pdev->dev, "PHY initialize error\n"); | |
2456 | goto err_free_adapter; | |
2457 | } | |
2458 | pch_gbe_hal_get_bus_info(&adapter->hw); | |
2459 | ||
2460 | /* Read the MAC address. and store to the private data */ | |
2461 | ret = pch_gbe_hal_read_mac_addr(&adapter->hw); | |
2462 | if (ret) { | |
2463 | dev_err(&pdev->dev, "MAC address Read Error\n"); | |
2464 | goto err_free_adapter; | |
2465 | } | |
2466 | ||
2467 | memcpy(netdev->dev_addr, adapter->hw.mac.addr, netdev->addr_len); | |
2468 | if (!is_valid_ether_addr(netdev->dev_addr)) { | |
2469 | dev_err(&pdev->dev, "Invalid MAC Address\n"); | |
2470 | ret = -EIO; | |
2471 | goto err_free_adapter; | |
2472 | } | |
2473 | setup_timer(&adapter->watchdog_timer, pch_gbe_watchdog, | |
2474 | (unsigned long)adapter); | |
2475 | ||
2476 | INIT_WORK(&adapter->reset_task, pch_gbe_reset_task); | |
2477 | ||
2478 | pch_gbe_check_options(adapter); | |
2479 | ||
77555ee7 MO |
2480 | /* initialize the wol settings based on the eeprom settings */ |
2481 | adapter->wake_up_evt = PCH_GBE_WL_INIT_SETTING; | |
2482 | dev_info(&pdev->dev, "MAC address : %pM\n", netdev->dev_addr); | |
2483 | ||
2484 | /* reset the hardware with the new settings */ | |
2485 | pch_gbe_reset(adapter); | |
2486 | ||
2487 | ret = register_netdev(netdev); | |
2488 | if (ret) | |
2489 | goto err_free_adapter; | |
2490 | /* tell the stack to leave us alone until pch_gbe_open() is called */ | |
2491 | netif_carrier_off(netdev); | |
2492 | netif_stop_queue(netdev); | |
2493 | ||
2494 | dev_dbg(&pdev->dev, "OKIsemi(R) PCH Network Connection\n"); | |
2495 | ||
2496 | device_set_wakeup_enable(&pdev->dev, 1); | |
2497 | return 0; | |
2498 | ||
2499 | err_free_adapter: | |
2500 | pch_gbe_hal_phy_hw_reset(&adapter->hw); | |
2501 | kfree(adapter->tx_ring); | |
2502 | kfree(adapter->rx_ring); | |
2503 | err_iounmap: | |
2504 | iounmap(adapter->hw.reg); | |
2505 | err_free_netdev: | |
2506 | free_netdev(netdev); | |
2507 | err_release_pci: | |
2508 | pci_release_regions(pdev); | |
2509 | err_disable_device: | |
2510 | pci_disable_device(pdev); | |
2511 | return ret; | |
2512 | } | |
2513 | ||
7fc44633 | 2514 | static DEFINE_PCI_DEVICE_TABLE(pch_gbe_pcidev_id) = { |
77555ee7 MO |
2515 | {.vendor = PCI_VENDOR_ID_INTEL, |
2516 | .device = PCI_DEVICE_ID_INTEL_IOH1_GBE, | |
2517 | .subvendor = PCI_ANY_ID, | |
2518 | .subdevice = PCI_ANY_ID, | |
2519 | .class = (PCI_CLASS_NETWORK_ETHERNET << 8), | |
2520 | .class_mask = (0xFFFF00) | |
2521 | }, | |
b0e6baf5 T |
2522 | {.vendor = PCI_VENDOR_ID_ROHM, |
2523 | .device = PCI_DEVICE_ID_ROHM_ML7223_GBE, | |
2524 | .subvendor = PCI_ANY_ID, | |
2525 | .subdevice = PCI_ANY_ID, | |
2526 | .class = (PCI_CLASS_NETWORK_ETHERNET << 8), | |
2527 | .class_mask = (0xFFFF00) | |
2528 | }, | |
77555ee7 MO |
2529 | /* required last entry */ |
2530 | {0} | |
2531 | }; | |
2532 | ||
2533 | #ifdef CONFIG_PM | |
2534 | static const struct dev_pm_ops pch_gbe_pm_ops = { | |
2535 | .suspend = pch_gbe_suspend, | |
2536 | .resume = pch_gbe_resume, | |
2537 | .freeze = pch_gbe_suspend, | |
2538 | .thaw = pch_gbe_resume, | |
2539 | .poweroff = pch_gbe_suspend, | |
2540 | .restore = pch_gbe_resume, | |
2541 | }; | |
2542 | #endif | |
2543 | ||
2544 | static struct pci_error_handlers pch_gbe_err_handler = { | |
2545 | .error_detected = pch_gbe_io_error_detected, | |
2546 | .slot_reset = pch_gbe_io_slot_reset, | |
2547 | .resume = pch_gbe_io_resume | |
2548 | }; | |
2549 | ||
f7594d42 | 2550 | static struct pci_driver pch_gbe_driver = { |
77555ee7 MO |
2551 | .name = KBUILD_MODNAME, |
2552 | .id_table = pch_gbe_pcidev_id, | |
2553 | .probe = pch_gbe_probe, | |
2554 | .remove = pch_gbe_remove, | |
aa338601 | 2555 | #ifdef CONFIG_PM |
77555ee7 MO |
2556 | .driver.pm = &pch_gbe_pm_ops, |
2557 | #endif | |
2558 | .shutdown = pch_gbe_shutdown, | |
2559 | .err_handler = &pch_gbe_err_handler | |
2560 | }; | |
2561 | ||
2562 | ||
2563 | static int __init pch_gbe_init_module(void) | |
2564 | { | |
2565 | int ret; | |
2566 | ||
f7594d42 | 2567 | ret = pci_register_driver(&pch_gbe_driver); |
77555ee7 MO |
2568 | if (copybreak != PCH_GBE_COPYBREAK_DEFAULT) { |
2569 | if (copybreak == 0) { | |
2570 | pr_info("copybreak disabled\n"); | |
2571 | } else { | |
2572 | pr_info("copybreak enabled for packets <= %u bytes\n", | |
2573 | copybreak); | |
2574 | } | |
2575 | } | |
2576 | return ret; | |
2577 | } | |
2578 | ||
2579 | static void __exit pch_gbe_exit_module(void) | |
2580 | { | |
f7594d42 | 2581 | pci_unregister_driver(&pch_gbe_driver); |
77555ee7 MO |
2582 | } |
2583 | ||
2584 | module_init(pch_gbe_init_module); | |
2585 | module_exit(pch_gbe_exit_module); | |
2586 | ||
a1dcfcb7 TO |
2587 | MODULE_DESCRIPTION("EG20T PCH Gigabit ethernet Driver"); |
2588 | MODULE_AUTHOR("OKI SEMICONDUCTOR, <toshiharu-linux@dsn.okisemi.com>"); | |
77555ee7 MO |
2589 | MODULE_LICENSE("GPL"); |
2590 | MODULE_VERSION(DRV_VERSION); | |
2591 | MODULE_DEVICE_TABLE(pci, pch_gbe_pcidev_id); | |
2592 | ||
2593 | module_param(copybreak, uint, 0644); | |
2594 | MODULE_PARM_DESC(copybreak, | |
2595 | "Maximum size of packet that is copied to a new buffer on receive"); | |
2596 | ||
2597 | /* pch_gbe_main.c */ |