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95252236 GFT |
1 | /* |
2 | * JMicron JMC2x0 series PCIe Ethernet Linux Device Driver | |
3 | * | |
4 | * Copyright 2008 JMicron Technology Corporation | |
5 | * http://www.jmicron.com/ | |
6 | * | |
7 | * Author: Guo-Fu Tseng <cooldavid@cooldavid.org> | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; either version 2 of the License. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
21 | * | |
22 | */ | |
23 | ||
95252236 GFT |
24 | #include <linux/module.h> |
25 | #include <linux/kernel.h> | |
26 | #include <linux/pci.h> | |
27 | #include <linux/netdevice.h> | |
28 | #include <linux/etherdevice.h> | |
29 | #include <linux/ethtool.h> | |
30 | #include <linux/mii.h> | |
31 | #include <linux/crc32.h> | |
32 | #include <linux/delay.h> | |
33 | #include <linux/spinlock.h> | |
34 | #include <linux/in.h> | |
35 | #include <linux/ip.h> | |
36 | #include <linux/ipv6.h> | |
37 | #include <linux/tcp.h> | |
38 | #include <linux/udp.h> | |
39 | #include <linux/if_vlan.h> | |
b7c6bfb7 | 40 | #include <net/ip6_checksum.h> |
95252236 GFT |
41 | #include "jme.h" |
42 | ||
43 | static int force_pseudohp = -1; | |
44 | static int no_pseudohp = -1; | |
45 | static int no_extplug = -1; | |
46 | module_param(force_pseudohp, int, 0); | |
47 | MODULE_PARM_DESC(force_pseudohp, | |
48 | "Enable pseudo hot-plug feature manually by driver instead of BIOS."); | |
49 | module_param(no_pseudohp, int, 0); | |
50 | MODULE_PARM_DESC(no_pseudohp, "Disable pseudo hot-plug feature."); | |
51 | module_param(no_extplug, int, 0); | |
52 | MODULE_PARM_DESC(no_extplug, | |
53 | "Do not use external plug signal for pseudo hot-plug."); | |
54 | ||
55 | static int | |
56 | jme_mdio_read(struct net_device *netdev, int phy, int reg) | |
57 | { | |
58 | struct jme_adapter *jme = netdev_priv(netdev); | |
59 | int i, val, again = (reg == MII_BMSR) ? 1 : 0; | |
60 | ||
61 | read_again: | |
62 | jwrite32(jme, JME_SMI, SMI_OP_REQ | | |
63 | smi_phy_addr(phy) | | |
64 | smi_reg_addr(reg)); | |
65 | ||
66 | wmb(); | |
67 | for (i = JME_PHY_TIMEOUT * 50 ; i > 0 ; --i) { | |
68 | udelay(20); | |
69 | val = jread32(jme, JME_SMI); | |
70 | if ((val & SMI_OP_REQ) == 0) | |
71 | break; | |
72 | } | |
73 | ||
74 | if (i == 0) { | |
75 | jeprintk(jme->pdev, "phy(%d) read timeout : %d\n", phy, reg); | |
76 | return 0; | |
77 | } | |
78 | ||
79 | if (again--) | |
80 | goto read_again; | |
81 | ||
82 | return (val & SMI_DATA_MASK) >> SMI_DATA_SHIFT; | |
83 | } | |
84 | ||
85 | static void | |
86 | jme_mdio_write(struct net_device *netdev, | |
87 | int phy, int reg, int val) | |
88 | { | |
89 | struct jme_adapter *jme = netdev_priv(netdev); | |
90 | int i; | |
91 | ||
92 | jwrite32(jme, JME_SMI, SMI_OP_WRITE | SMI_OP_REQ | | |
93 | ((val << SMI_DATA_SHIFT) & SMI_DATA_MASK) | | |
94 | smi_phy_addr(phy) | smi_reg_addr(reg)); | |
95 | ||
96 | wmb(); | |
97 | for (i = JME_PHY_TIMEOUT * 50 ; i > 0 ; --i) { | |
98 | udelay(20); | |
99 | if ((jread32(jme, JME_SMI) & SMI_OP_REQ) == 0) | |
100 | break; | |
101 | } | |
102 | ||
103 | if (i == 0) | |
104 | jeprintk(jme->pdev, "phy(%d) write timeout : %d\n", phy, reg); | |
105 | ||
106 | return; | |
107 | } | |
108 | ||
109 | static inline void | |
110 | jme_reset_phy_processor(struct jme_adapter *jme) | |
111 | { | |
112 | u32 val; | |
113 | ||
114 | jme_mdio_write(jme->dev, | |
115 | jme->mii_if.phy_id, | |
116 | MII_ADVERTISE, ADVERTISE_ALL | | |
117 | ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM); | |
118 | ||
119 | if (jme->pdev->device == PCI_DEVICE_ID_JMICRON_JMC250) | |
120 | jme_mdio_write(jme->dev, | |
121 | jme->mii_if.phy_id, | |
122 | MII_CTRL1000, | |
123 | ADVERTISE_1000FULL | ADVERTISE_1000HALF); | |
124 | ||
125 | val = jme_mdio_read(jme->dev, | |
126 | jme->mii_if.phy_id, | |
127 | MII_BMCR); | |
128 | ||
129 | jme_mdio_write(jme->dev, | |
130 | jme->mii_if.phy_id, | |
131 | MII_BMCR, val | BMCR_RESET); | |
132 | ||
133 | return; | |
134 | } | |
135 | ||
136 | static void | |
137 | jme_setup_wakeup_frame(struct jme_adapter *jme, | |
138 | u32 *mask, u32 crc, int fnr) | |
139 | { | |
140 | int i; | |
141 | ||
142 | /* | |
143 | * Setup CRC pattern | |
144 | */ | |
145 | jwrite32(jme, JME_WFOI, WFOI_CRC_SEL | (fnr & WFOI_FRAME_SEL)); | |
146 | wmb(); | |
147 | jwrite32(jme, JME_WFODP, crc); | |
148 | wmb(); | |
149 | ||
150 | /* | |
151 | * Setup Mask | |
152 | */ | |
153 | for (i = 0 ; i < WAKEUP_FRAME_MASK_DWNR ; ++i) { | |
154 | jwrite32(jme, JME_WFOI, | |
155 | ((i << WFOI_MASK_SHIFT) & WFOI_MASK_SEL) | | |
156 | (fnr & WFOI_FRAME_SEL)); | |
157 | wmb(); | |
158 | jwrite32(jme, JME_WFODP, mask[i]); | |
159 | wmb(); | |
160 | } | |
161 | } | |
162 | ||
163 | static inline void | |
164 | jme_reset_mac_processor(struct jme_adapter *jme) | |
165 | { | |
166 | u32 mask[WAKEUP_FRAME_MASK_DWNR] = {0, 0, 0, 0}; | |
167 | u32 crc = 0xCDCDCDCD; | |
168 | u32 gpreg0; | |
169 | int i; | |
170 | ||
171 | jwrite32(jme, JME_GHC, jme->reg_ghc | GHC_SWRST); | |
172 | udelay(2); | |
173 | jwrite32(jme, JME_GHC, jme->reg_ghc); | |
174 | ||
175 | jwrite32(jme, JME_RXDBA_LO, 0x00000000); | |
176 | jwrite32(jme, JME_RXDBA_HI, 0x00000000); | |
177 | jwrite32(jme, JME_RXQDC, 0x00000000); | |
178 | jwrite32(jme, JME_RXNDA, 0x00000000); | |
179 | jwrite32(jme, JME_TXDBA_LO, 0x00000000); | |
180 | jwrite32(jme, JME_TXDBA_HI, 0x00000000); | |
181 | jwrite32(jme, JME_TXQDC, 0x00000000); | |
182 | jwrite32(jme, JME_TXNDA, 0x00000000); | |
183 | ||
184 | jwrite32(jme, JME_RXMCHT_LO, 0x00000000); | |
185 | jwrite32(jme, JME_RXMCHT_HI, 0x00000000); | |
186 | for (i = 0 ; i < WAKEUP_FRAME_NR ; ++i) | |
187 | jme_setup_wakeup_frame(jme, mask, crc, i); | |
188 | if (jme->fpgaver) | |
189 | gpreg0 = GPREG0_DEFAULT | GPREG0_LNKINTPOLL; | |
190 | else | |
191 | gpreg0 = GPREG0_DEFAULT; | |
192 | jwrite32(jme, JME_GPREG0, gpreg0); | |
a821ebe5 | 193 | jwrite32(jme, JME_GPREG1, GPREG1_DEFAULT); |
95252236 GFT |
194 | } |
195 | ||
196 | static inline void | |
197 | jme_reset_ghc_speed(struct jme_adapter *jme) | |
198 | { | |
199 | jme->reg_ghc &= ~(GHC_SPEED_1000M | GHC_DPX); | |
200 | jwrite32(jme, JME_GHC, jme->reg_ghc); | |
201 | } | |
202 | ||
203 | static inline void | |
204 | jme_clear_pm(struct jme_adapter *jme) | |
205 | { | |
206 | jwrite32(jme, JME_PMCS, 0xFFFF0000 | jme->reg_pmcs); | |
207 | pci_set_power_state(jme->pdev, PCI_D0); | |
208 | pci_enable_wake(jme->pdev, PCI_D0, false); | |
209 | } | |
210 | ||
211 | static int | |
212 | jme_reload_eeprom(struct jme_adapter *jme) | |
213 | { | |
214 | u32 val; | |
215 | int i; | |
216 | ||
217 | val = jread32(jme, JME_SMBCSR); | |
218 | ||
219 | if (val & SMBCSR_EEPROMD) { | |
220 | val |= SMBCSR_CNACK; | |
221 | jwrite32(jme, JME_SMBCSR, val); | |
222 | val |= SMBCSR_RELOAD; | |
223 | jwrite32(jme, JME_SMBCSR, val); | |
224 | mdelay(12); | |
225 | ||
226 | for (i = JME_EEPROM_RELOAD_TIMEOUT; i > 0; --i) { | |
227 | mdelay(1); | |
228 | if ((jread32(jme, JME_SMBCSR) & SMBCSR_RELOAD) == 0) | |
229 | break; | |
230 | } | |
231 | ||
232 | if (i == 0) { | |
233 | jeprintk(jme->pdev, "eeprom reload timeout\n"); | |
234 | return -EIO; | |
235 | } | |
236 | } | |
237 | ||
238 | return 0; | |
239 | } | |
240 | ||
241 | static void | |
242 | jme_load_macaddr(struct net_device *netdev) | |
243 | { | |
244 | struct jme_adapter *jme = netdev_priv(netdev); | |
245 | unsigned char macaddr[6]; | |
246 | u32 val; | |
247 | ||
248 | spin_lock_bh(&jme->macaddr_lock); | |
249 | val = jread32(jme, JME_RXUMA_LO); | |
250 | macaddr[0] = (val >> 0) & 0xFF; | |
251 | macaddr[1] = (val >> 8) & 0xFF; | |
252 | macaddr[2] = (val >> 16) & 0xFF; | |
253 | macaddr[3] = (val >> 24) & 0xFF; | |
254 | val = jread32(jme, JME_RXUMA_HI); | |
255 | macaddr[4] = (val >> 0) & 0xFF; | |
256 | macaddr[5] = (val >> 8) & 0xFF; | |
257 | memcpy(netdev->dev_addr, macaddr, 6); | |
258 | spin_unlock_bh(&jme->macaddr_lock); | |
259 | } | |
260 | ||
261 | static inline void | |
262 | jme_set_rx_pcc(struct jme_adapter *jme, int p) | |
263 | { | |
264 | switch (p) { | |
265 | case PCC_OFF: | |
266 | jwrite32(jme, JME_PCCRX0, | |
267 | ((PCC_OFF_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) | | |
268 | ((PCC_OFF_CNT << PCCRX_SHIFT) & PCCRX_MASK)); | |
269 | break; | |
270 | case PCC_P1: | |
271 | jwrite32(jme, JME_PCCRX0, | |
272 | ((PCC_P1_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) | | |
273 | ((PCC_P1_CNT << PCCRX_SHIFT) & PCCRX_MASK)); | |
274 | break; | |
275 | case PCC_P2: | |
276 | jwrite32(jme, JME_PCCRX0, | |
277 | ((PCC_P2_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) | | |
278 | ((PCC_P2_CNT << PCCRX_SHIFT) & PCCRX_MASK)); | |
279 | break; | |
280 | case PCC_P3: | |
281 | jwrite32(jme, JME_PCCRX0, | |
282 | ((PCC_P3_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) | | |
283 | ((PCC_P3_CNT << PCCRX_SHIFT) & PCCRX_MASK)); | |
284 | break; | |
285 | default: | |
286 | break; | |
287 | } | |
288 | wmb(); | |
289 | ||
290 | if (!(test_bit(JME_FLAG_POLL, &jme->flags))) | |
291 | msg_rx_status(jme, "Switched to PCC_P%d\n", p); | |
292 | } | |
293 | ||
294 | static void | |
295 | jme_start_irq(struct jme_adapter *jme) | |
296 | { | |
297 | register struct dynpcc_info *dpi = &(jme->dpi); | |
298 | ||
299 | jme_set_rx_pcc(jme, PCC_P1); | |
300 | dpi->cur = PCC_P1; | |
301 | dpi->attempt = PCC_P1; | |
302 | dpi->cnt = 0; | |
303 | ||
304 | jwrite32(jme, JME_PCCTX, | |
305 | ((PCC_TX_TO << PCCTXTO_SHIFT) & PCCTXTO_MASK) | | |
306 | ((PCC_TX_CNT << PCCTX_SHIFT) & PCCTX_MASK) | | |
307 | PCCTXQ0_EN | |
308 | ); | |
309 | ||
310 | /* | |
311 | * Enable Interrupts | |
312 | */ | |
313 | jwrite32(jme, JME_IENS, INTR_ENABLE); | |
314 | } | |
315 | ||
316 | static inline void | |
317 | jme_stop_irq(struct jme_adapter *jme) | |
318 | { | |
319 | /* | |
320 | * Disable Interrupts | |
321 | */ | |
322 | jwrite32f(jme, JME_IENC, INTR_ENABLE); | |
323 | } | |
324 | ||
325 | static inline void | |
326 | jme_enable_shadow(struct jme_adapter *jme) | |
327 | { | |
328 | jwrite32(jme, | |
329 | JME_SHBA_LO, | |
330 | ((u32)jme->shadow_dma & ~((u32)0x1F)) | SHBA_POSTEN); | |
331 | } | |
332 | ||
333 | static inline void | |
334 | jme_disable_shadow(struct jme_adapter *jme) | |
335 | { | |
336 | jwrite32(jme, JME_SHBA_LO, 0x0); | |
337 | } | |
338 | ||
339 | static u32 | |
340 | jme_linkstat_from_phy(struct jme_adapter *jme) | |
341 | { | |
342 | u32 phylink, bmsr; | |
343 | ||
344 | phylink = jme_mdio_read(jme->dev, jme->mii_if.phy_id, 17); | |
345 | bmsr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMSR); | |
346 | if (bmsr & BMSR_ANCOMP) | |
347 | phylink |= PHY_LINK_AUTONEG_COMPLETE; | |
348 | ||
349 | return phylink; | |
350 | } | |
351 | ||
352 | static inline void | |
353 | jme_set_phyfifoa(struct jme_adapter *jme) | |
354 | { | |
355 | jme_mdio_write(jme->dev, jme->mii_if.phy_id, 27, 0x0004); | |
356 | } | |
357 | ||
358 | static inline void | |
359 | jme_set_phyfifob(struct jme_adapter *jme) | |
360 | { | |
361 | jme_mdio_write(jme->dev, jme->mii_if.phy_id, 27, 0x0000); | |
362 | } | |
363 | ||
364 | static int | |
365 | jme_check_link(struct net_device *netdev, int testonly) | |
366 | { | |
367 | struct jme_adapter *jme = netdev_priv(netdev); | |
a821ebe5 | 368 | u32 phylink, ghc, cnt = JME_SPDRSV_TIMEOUT, bmcr, gpreg1; |
95252236 GFT |
369 | char linkmsg[64]; |
370 | int rc = 0; | |
371 | ||
372 | linkmsg[0] = '\0'; | |
373 | ||
374 | if (jme->fpgaver) | |
375 | phylink = jme_linkstat_from_phy(jme); | |
376 | else | |
377 | phylink = jread32(jme, JME_PHY_LINK); | |
378 | ||
379 | if (phylink & PHY_LINK_UP) { | |
380 | if (!(phylink & PHY_LINK_AUTONEG_COMPLETE)) { | |
381 | /* | |
382 | * If we did not enable AN | |
383 | * Speed/Duplex Info should be obtained from SMI | |
384 | */ | |
385 | phylink = PHY_LINK_UP; | |
386 | ||
387 | bmcr = jme_mdio_read(jme->dev, | |
388 | jme->mii_if.phy_id, | |
389 | MII_BMCR); | |
390 | ||
391 | phylink |= ((bmcr & BMCR_SPEED1000) && | |
392 | (bmcr & BMCR_SPEED100) == 0) ? | |
393 | PHY_LINK_SPEED_1000M : | |
394 | (bmcr & BMCR_SPEED100) ? | |
395 | PHY_LINK_SPEED_100M : | |
396 | PHY_LINK_SPEED_10M; | |
397 | ||
398 | phylink |= (bmcr & BMCR_FULLDPLX) ? | |
399 | PHY_LINK_DUPLEX : 0; | |
400 | ||
401 | strcat(linkmsg, "Forced: "); | |
402 | } else { | |
403 | /* | |
404 | * Keep polling for speed/duplex resolve complete | |
405 | */ | |
406 | while (!(phylink & PHY_LINK_SPEEDDPU_RESOLVED) && | |
407 | --cnt) { | |
408 | ||
409 | udelay(1); | |
410 | ||
411 | if (jme->fpgaver) | |
412 | phylink = jme_linkstat_from_phy(jme); | |
413 | else | |
414 | phylink = jread32(jme, JME_PHY_LINK); | |
415 | } | |
416 | if (!cnt) | |
417 | jeprintk(jme->pdev, | |
418 | "Waiting speed resolve timeout.\n"); | |
419 | ||
420 | strcat(linkmsg, "ANed: "); | |
421 | } | |
422 | ||
423 | if (jme->phylink == phylink) { | |
424 | rc = 1; | |
425 | goto out; | |
426 | } | |
427 | if (testonly) | |
428 | goto out; | |
429 | ||
430 | jme->phylink = phylink; | |
431 | ||
432 | ghc = jme->reg_ghc & ~(GHC_SPEED_10M | | |
433 | GHC_SPEED_100M | | |
434 | GHC_SPEED_1000M | | |
435 | GHC_DPX); | |
436 | switch (phylink & PHY_LINK_SPEED_MASK) { | |
437 | case PHY_LINK_SPEED_10M: | |
4f40bf46 | 438 | ghc |= GHC_SPEED_10M | |
439 | GHC_TO_CLK_PCIE | GHC_TXMAC_CLK_PCIE; | |
95252236 | 440 | strcat(linkmsg, "10 Mbps, "); |
95252236 GFT |
441 | break; |
442 | case PHY_LINK_SPEED_100M: | |
4f40bf46 | 443 | ghc |= GHC_SPEED_100M | |
444 | GHC_TO_CLK_PCIE | GHC_TXMAC_CLK_PCIE; | |
95252236 | 445 | strcat(linkmsg, "100 Mbps, "); |
95252236 GFT |
446 | break; |
447 | case PHY_LINK_SPEED_1000M: | |
4f40bf46 | 448 | ghc |= GHC_SPEED_1000M | |
449 | GHC_TO_CLK_GPHY | GHC_TXMAC_CLK_GPHY; | |
95252236 | 450 | strcat(linkmsg, "1000 Mbps, "); |
95252236 GFT |
451 | break; |
452 | default: | |
453 | break; | |
454 | } | |
95252236 GFT |
455 | |
456 | if (phylink & PHY_LINK_DUPLEX) { | |
457 | jwrite32(jme, JME_TXMCS, TXMCS_DEFAULT); | |
a821ebe5 | 458 | ghc |= GHC_DPX; |
95252236 GFT |
459 | } else { |
460 | jwrite32(jme, JME_TXMCS, TXMCS_DEFAULT | | |
461 | TXMCS_BACKOFF | | |
462 | TXMCS_CARRIERSENSE | | |
463 | TXMCS_COLLISION); | |
464 | jwrite32(jme, JME_TXTRHD, TXTRHD_TXPEN | | |
465 | ((0x2000 << TXTRHD_TXP_SHIFT) & TXTRHD_TXP) | | |
466 | TXTRHD_TXREN | | |
467 | ((8 << TXTRHD_TXRL_SHIFT) & TXTRHD_TXRL)); | |
468 | } | |
a821ebe5 GFT |
469 | |
470 | gpreg1 = GPREG1_DEFAULT; | |
471 | if (is_buggy250(jme->pdev->device, jme->chiprev)) { | |
472 | if (!(phylink & PHY_LINK_DUPLEX)) | |
473 | gpreg1 |= GPREG1_HALFMODEPATCH; | |
474 | switch (phylink & PHY_LINK_SPEED_MASK) { | |
475 | case PHY_LINK_SPEED_10M: | |
476 | jme_set_phyfifoa(jme); | |
477 | gpreg1 |= GPREG1_RSSPATCH; | |
478 | break; | |
479 | case PHY_LINK_SPEED_100M: | |
480 | jme_set_phyfifob(jme); | |
481 | gpreg1 |= GPREG1_RSSPATCH; | |
482 | break; | |
483 | case PHY_LINK_SPEED_1000M: | |
484 | jme_set_phyfifoa(jme); | |
485 | break; | |
486 | default: | |
487 | break; | |
488 | } | |
489 | } | |
95252236 | 490 | |
4f40bf46 | 491 | jwrite32(jme, JME_GPREG1, gpreg1); |
95252236 | 492 | jwrite32(jme, JME_GHC, ghc); |
4f40bf46 | 493 | jme->reg_ghc = ghc; |
95252236 | 494 | |
4f40bf46 | 495 | strcat(linkmsg, (phylink & PHY_LINK_DUPLEX) ? |
496 | "Full-Duplex, " : | |
497 | "Half-Duplex, "); | |
498 | strcat(linkmsg, (phylink & PHY_LINK_MDI_STAT) ? | |
499 | "MDI-X" : | |
500 | "MDI"); | |
95252236 GFT |
501 | msg_link(jme, "Link is up at %s.\n", linkmsg); |
502 | netif_carrier_on(netdev); | |
503 | } else { | |
504 | if (testonly) | |
505 | goto out; | |
506 | ||
507 | msg_link(jme, "Link is down.\n"); | |
508 | jme->phylink = 0; | |
509 | netif_carrier_off(netdev); | |
510 | } | |
511 | ||
512 | out: | |
513 | return rc; | |
514 | } | |
515 | ||
516 | static int | |
517 | jme_setup_tx_resources(struct jme_adapter *jme) | |
518 | { | |
519 | struct jme_ring *txring = &(jme->txring[0]); | |
520 | ||
521 | txring->alloc = dma_alloc_coherent(&(jme->pdev->dev), | |
522 | TX_RING_ALLOC_SIZE(jme->tx_ring_size), | |
523 | &(txring->dmaalloc), | |
524 | GFP_ATOMIC); | |
525 | ||
526 | if (!txring->alloc) { | |
527 | txring->desc = NULL; | |
528 | txring->dmaalloc = 0; | |
529 | txring->dma = 0; | |
530 | return -ENOMEM; | |
531 | } | |
532 | ||
533 | /* | |
534 | * 16 Bytes align | |
535 | */ | |
536 | txring->desc = (void *)ALIGN((unsigned long)(txring->alloc), | |
537 | RING_DESC_ALIGN); | |
538 | txring->dma = ALIGN(txring->dmaalloc, RING_DESC_ALIGN); | |
539 | txring->next_to_use = 0; | |
540 | atomic_set(&txring->next_to_clean, 0); | |
541 | atomic_set(&txring->nr_free, jme->tx_ring_size); | |
542 | ||
543 | /* | |
544 | * Initialize Transmit Descriptors | |
545 | */ | |
546 | memset(txring->alloc, 0, TX_RING_ALLOC_SIZE(jme->tx_ring_size)); | |
547 | memset(txring->bufinf, 0, | |
548 | sizeof(struct jme_buffer_info) * jme->tx_ring_size); | |
549 | ||
550 | return 0; | |
551 | } | |
552 | ||
553 | static void | |
554 | jme_free_tx_resources(struct jme_adapter *jme) | |
555 | { | |
556 | int i; | |
557 | struct jme_ring *txring = &(jme->txring[0]); | |
558 | struct jme_buffer_info *txbi = txring->bufinf; | |
559 | ||
560 | if (txring->alloc) { | |
561 | for (i = 0 ; i < jme->tx_ring_size ; ++i) { | |
562 | txbi = txring->bufinf + i; | |
563 | if (txbi->skb) { | |
564 | dev_kfree_skb(txbi->skb); | |
565 | txbi->skb = NULL; | |
566 | } | |
567 | txbi->mapping = 0; | |
568 | txbi->len = 0; | |
569 | txbi->nr_desc = 0; | |
570 | txbi->start_xmit = 0; | |
571 | } | |
572 | ||
573 | dma_free_coherent(&(jme->pdev->dev), | |
574 | TX_RING_ALLOC_SIZE(jme->tx_ring_size), | |
575 | txring->alloc, | |
576 | txring->dmaalloc); | |
577 | ||
578 | txring->alloc = NULL; | |
579 | txring->desc = NULL; | |
580 | txring->dmaalloc = 0; | |
581 | txring->dma = 0; | |
582 | } | |
583 | txring->next_to_use = 0; | |
584 | atomic_set(&txring->next_to_clean, 0); | |
585 | atomic_set(&txring->nr_free, 0); | |
586 | ||
587 | } | |
588 | ||
589 | static inline void | |
590 | jme_enable_tx_engine(struct jme_adapter *jme) | |
591 | { | |
592 | /* | |
593 | * Select Queue 0 | |
594 | */ | |
595 | jwrite32(jme, JME_TXCS, TXCS_DEFAULT | TXCS_SELECT_QUEUE0); | |
596 | wmb(); | |
597 | ||
598 | /* | |
599 | * Setup TX Queue 0 DMA Bass Address | |
600 | */ | |
601 | jwrite32(jme, JME_TXDBA_LO, (__u64)jme->txring[0].dma & 0xFFFFFFFFUL); | |
602 | jwrite32(jme, JME_TXDBA_HI, (__u64)(jme->txring[0].dma) >> 32); | |
603 | jwrite32(jme, JME_TXNDA, (__u64)jme->txring[0].dma & 0xFFFFFFFFUL); | |
604 | ||
605 | /* | |
606 | * Setup TX Descptor Count | |
607 | */ | |
608 | jwrite32(jme, JME_TXQDC, jme->tx_ring_size); | |
609 | ||
610 | /* | |
611 | * Enable TX Engine | |
612 | */ | |
613 | wmb(); | |
614 | jwrite32(jme, JME_TXCS, jme->reg_txcs | | |
615 | TXCS_SELECT_QUEUE0 | | |
616 | TXCS_ENABLE); | |
617 | ||
618 | } | |
619 | ||
620 | static inline void | |
621 | jme_restart_tx_engine(struct jme_adapter *jme) | |
622 | { | |
623 | /* | |
624 | * Restart TX Engine | |
625 | */ | |
626 | jwrite32(jme, JME_TXCS, jme->reg_txcs | | |
627 | TXCS_SELECT_QUEUE0 | | |
628 | TXCS_ENABLE); | |
629 | } | |
630 | ||
631 | static inline void | |
632 | jme_disable_tx_engine(struct jme_adapter *jme) | |
633 | { | |
634 | int i; | |
635 | u32 val; | |
636 | ||
637 | /* | |
638 | * Disable TX Engine | |
639 | */ | |
640 | jwrite32(jme, JME_TXCS, jme->reg_txcs | TXCS_SELECT_QUEUE0); | |
641 | wmb(); | |
642 | ||
643 | val = jread32(jme, JME_TXCS); | |
644 | for (i = JME_TX_DISABLE_TIMEOUT ; (val & TXCS_ENABLE) && i > 0 ; --i) { | |
645 | mdelay(1); | |
646 | val = jread32(jme, JME_TXCS); | |
647 | rmb(); | |
648 | } | |
649 | ||
650 | if (!i) | |
651 | jeprintk(jme->pdev, "Disable TX engine timeout.\n"); | |
652 | } | |
653 | ||
654 | static void | |
655 | jme_set_clean_rxdesc(struct jme_adapter *jme, int i) | |
656 | { | |
657 | struct jme_ring *rxring = jme->rxring; | |
658 | register struct rxdesc *rxdesc = rxring->desc; | |
659 | struct jme_buffer_info *rxbi = rxring->bufinf; | |
660 | rxdesc += i; | |
661 | rxbi += i; | |
662 | ||
663 | rxdesc->dw[0] = 0; | |
664 | rxdesc->dw[1] = 0; | |
665 | rxdesc->desc1.bufaddrh = cpu_to_le32((__u64)rxbi->mapping >> 32); | |
666 | rxdesc->desc1.bufaddrl = cpu_to_le32( | |
667 | (__u64)rxbi->mapping & 0xFFFFFFFFUL); | |
668 | rxdesc->desc1.datalen = cpu_to_le16(rxbi->len); | |
669 | if (jme->dev->features & NETIF_F_HIGHDMA) | |
670 | rxdesc->desc1.flags = RXFLAG_64BIT; | |
671 | wmb(); | |
672 | rxdesc->desc1.flags |= RXFLAG_OWN | RXFLAG_INT; | |
673 | } | |
674 | ||
675 | static int | |
676 | jme_make_new_rx_buf(struct jme_adapter *jme, int i) | |
677 | { | |
678 | struct jme_ring *rxring = &(jme->rxring[0]); | |
679 | struct jme_buffer_info *rxbi = rxring->bufinf + i; | |
680 | struct sk_buff *skb; | |
681 | ||
682 | skb = netdev_alloc_skb(jme->dev, | |
683 | jme->dev->mtu + RX_EXTRA_LEN); | |
684 | if (unlikely(!skb)) | |
685 | return -ENOMEM; | |
686 | ||
687 | rxbi->skb = skb; | |
688 | rxbi->len = skb_tailroom(skb); | |
689 | rxbi->mapping = pci_map_page(jme->pdev, | |
690 | virt_to_page(skb->data), | |
691 | offset_in_page(skb->data), | |
692 | rxbi->len, | |
693 | PCI_DMA_FROMDEVICE); | |
694 | ||
695 | return 0; | |
696 | } | |
697 | ||
698 | static void | |
699 | jme_free_rx_buf(struct jme_adapter *jme, int i) | |
700 | { | |
701 | struct jme_ring *rxring = &(jme->rxring[0]); | |
702 | struct jme_buffer_info *rxbi = rxring->bufinf; | |
703 | rxbi += i; | |
704 | ||
705 | if (rxbi->skb) { | |
706 | pci_unmap_page(jme->pdev, | |
707 | rxbi->mapping, | |
708 | rxbi->len, | |
709 | PCI_DMA_FROMDEVICE); | |
710 | dev_kfree_skb(rxbi->skb); | |
711 | rxbi->skb = NULL; | |
712 | rxbi->mapping = 0; | |
713 | rxbi->len = 0; | |
714 | } | |
715 | } | |
716 | ||
717 | static void | |
718 | jme_free_rx_resources(struct jme_adapter *jme) | |
719 | { | |
720 | int i; | |
721 | struct jme_ring *rxring = &(jme->rxring[0]); | |
722 | ||
723 | if (rxring->alloc) { | |
724 | for (i = 0 ; i < jme->rx_ring_size ; ++i) | |
725 | jme_free_rx_buf(jme, i); | |
726 | ||
727 | dma_free_coherent(&(jme->pdev->dev), | |
728 | RX_RING_ALLOC_SIZE(jme->rx_ring_size), | |
729 | rxring->alloc, | |
730 | rxring->dmaalloc); | |
731 | rxring->alloc = NULL; | |
732 | rxring->desc = NULL; | |
733 | rxring->dmaalloc = 0; | |
734 | rxring->dma = 0; | |
735 | } | |
736 | rxring->next_to_use = 0; | |
737 | atomic_set(&rxring->next_to_clean, 0); | |
738 | } | |
739 | ||
740 | static int | |
741 | jme_setup_rx_resources(struct jme_adapter *jme) | |
742 | { | |
743 | int i; | |
744 | struct jme_ring *rxring = &(jme->rxring[0]); | |
745 | ||
746 | rxring->alloc = dma_alloc_coherent(&(jme->pdev->dev), | |
747 | RX_RING_ALLOC_SIZE(jme->rx_ring_size), | |
748 | &(rxring->dmaalloc), | |
749 | GFP_ATOMIC); | |
750 | if (!rxring->alloc) { | |
751 | rxring->desc = NULL; | |
752 | rxring->dmaalloc = 0; | |
753 | rxring->dma = 0; | |
754 | return -ENOMEM; | |
755 | } | |
756 | ||
757 | /* | |
758 | * 16 Bytes align | |
759 | */ | |
760 | rxring->desc = (void *)ALIGN((unsigned long)(rxring->alloc), | |
761 | RING_DESC_ALIGN); | |
762 | rxring->dma = ALIGN(rxring->dmaalloc, RING_DESC_ALIGN); | |
763 | rxring->next_to_use = 0; | |
764 | atomic_set(&rxring->next_to_clean, 0); | |
765 | ||
766 | /* | |
767 | * Initiallize Receive Descriptors | |
768 | */ | |
769 | for (i = 0 ; i < jme->rx_ring_size ; ++i) { | |
770 | if (unlikely(jme_make_new_rx_buf(jme, i))) { | |
771 | jme_free_rx_resources(jme); | |
772 | return -ENOMEM; | |
773 | } | |
774 | ||
775 | jme_set_clean_rxdesc(jme, i); | |
776 | } | |
777 | ||
778 | return 0; | |
779 | } | |
780 | ||
781 | static inline void | |
782 | jme_enable_rx_engine(struct jme_adapter *jme) | |
783 | { | |
784 | /* | |
785 | * Select Queue 0 | |
786 | */ | |
787 | jwrite32(jme, JME_RXCS, jme->reg_rxcs | | |
788 | RXCS_QUEUESEL_Q0); | |
789 | wmb(); | |
790 | ||
791 | /* | |
792 | * Setup RX DMA Bass Address | |
793 | */ | |
794 | jwrite32(jme, JME_RXDBA_LO, (__u64)jme->rxring[0].dma & 0xFFFFFFFFUL); | |
795 | jwrite32(jme, JME_RXDBA_HI, (__u64)(jme->rxring[0].dma) >> 32); | |
796 | jwrite32(jme, JME_RXNDA, (__u64)jme->rxring[0].dma & 0xFFFFFFFFUL); | |
797 | ||
798 | /* | |
799 | * Setup RX Descriptor Count | |
800 | */ | |
801 | jwrite32(jme, JME_RXQDC, jme->rx_ring_size); | |
802 | ||
803 | /* | |
804 | * Setup Unicast Filter | |
805 | */ | |
806 | jme_set_multi(jme->dev); | |
807 | ||
808 | /* | |
809 | * Enable RX Engine | |
810 | */ | |
811 | wmb(); | |
812 | jwrite32(jme, JME_RXCS, jme->reg_rxcs | | |
813 | RXCS_QUEUESEL_Q0 | | |
814 | RXCS_ENABLE | | |
815 | RXCS_QST); | |
816 | } | |
817 | ||
818 | static inline void | |
819 | jme_restart_rx_engine(struct jme_adapter *jme) | |
820 | { | |
821 | /* | |
822 | * Start RX Engine | |
823 | */ | |
824 | jwrite32(jme, JME_RXCS, jme->reg_rxcs | | |
825 | RXCS_QUEUESEL_Q0 | | |
826 | RXCS_ENABLE | | |
827 | RXCS_QST); | |
828 | } | |
829 | ||
830 | static inline void | |
831 | jme_disable_rx_engine(struct jme_adapter *jme) | |
832 | { | |
833 | int i; | |
834 | u32 val; | |
835 | ||
836 | /* | |
837 | * Disable RX Engine | |
838 | */ | |
839 | jwrite32(jme, JME_RXCS, jme->reg_rxcs); | |
840 | wmb(); | |
841 | ||
842 | val = jread32(jme, JME_RXCS); | |
843 | for (i = JME_RX_DISABLE_TIMEOUT ; (val & RXCS_ENABLE) && i > 0 ; --i) { | |
844 | mdelay(1); | |
845 | val = jread32(jme, JME_RXCS); | |
846 | rmb(); | |
847 | } | |
848 | ||
849 | if (!i) | |
850 | jeprintk(jme->pdev, "Disable RX engine timeout.\n"); | |
851 | ||
852 | } | |
853 | ||
854 | static int | |
855 | jme_rxsum_ok(struct jme_adapter *jme, u16 flags) | |
856 | { | |
857 | if (!(flags & (RXWBFLAG_TCPON | RXWBFLAG_UDPON | RXWBFLAG_IPV4))) | |
858 | return false; | |
859 | ||
860 | if (unlikely(!(flags & RXWBFLAG_MF) && | |
861 | (flags & RXWBFLAG_TCPON) && !(flags & RXWBFLAG_TCPCS))) { | |
862 | msg_rx_err(jme, "TCP Checksum error.\n"); | |
863 | goto out_sumerr; | |
864 | } | |
865 | ||
866 | if (unlikely(!(flags & RXWBFLAG_MF) && | |
867 | (flags & RXWBFLAG_UDPON) && !(flags & RXWBFLAG_UDPCS))) { | |
868 | msg_rx_err(jme, "UDP Checksum error.\n"); | |
869 | goto out_sumerr; | |
870 | } | |
871 | ||
872 | if (unlikely((flags & RXWBFLAG_IPV4) && !(flags & RXWBFLAG_IPCS))) { | |
873 | msg_rx_err(jme, "IPv4 Checksum error.\n"); | |
874 | goto out_sumerr; | |
875 | } | |
876 | ||
877 | return true; | |
878 | ||
879 | out_sumerr: | |
880 | return false; | |
881 | } | |
882 | ||
883 | static void | |
884 | jme_alloc_and_feed_skb(struct jme_adapter *jme, int idx) | |
885 | { | |
886 | struct jme_ring *rxring = &(jme->rxring[0]); | |
887 | struct rxdesc *rxdesc = rxring->desc; | |
888 | struct jme_buffer_info *rxbi = rxring->bufinf; | |
889 | struct sk_buff *skb; | |
890 | int framesize; | |
891 | ||
892 | rxdesc += idx; | |
893 | rxbi += idx; | |
894 | ||
895 | skb = rxbi->skb; | |
896 | pci_dma_sync_single_for_cpu(jme->pdev, | |
897 | rxbi->mapping, | |
898 | rxbi->len, | |
899 | PCI_DMA_FROMDEVICE); | |
900 | ||
901 | if (unlikely(jme_make_new_rx_buf(jme, idx))) { | |
902 | pci_dma_sync_single_for_device(jme->pdev, | |
903 | rxbi->mapping, | |
904 | rxbi->len, | |
905 | PCI_DMA_FROMDEVICE); | |
906 | ||
907 | ++(NET_STAT(jme).rx_dropped); | |
908 | } else { | |
909 | framesize = le16_to_cpu(rxdesc->descwb.framesize) | |
910 | - RX_PREPAD_SIZE; | |
911 | ||
912 | skb_reserve(skb, RX_PREPAD_SIZE); | |
913 | skb_put(skb, framesize); | |
914 | skb->protocol = eth_type_trans(skb, jme->dev); | |
915 | ||
31c221c4 | 916 | if (jme_rxsum_ok(jme, le16_to_cpu(rxdesc->descwb.flags))) |
95252236 GFT |
917 | skb->ip_summed = CHECKSUM_UNNECESSARY; |
918 | else | |
919 | skb->ip_summed = CHECKSUM_NONE; | |
920 | ||
31c221c4 | 921 | if (rxdesc->descwb.flags & cpu_to_le16(RXWBFLAG_TAGON)) { |
95252236 GFT |
922 | if (jme->vlgrp) { |
923 | jme->jme_vlan_rx(skb, jme->vlgrp, | |
31c221c4 | 924 | le16_to_cpu(rxdesc->descwb.vlan)); |
95252236 GFT |
925 | NET_STAT(jme).rx_bytes += 4; |
926 | } | |
927 | } else { | |
928 | jme->jme_rx(skb); | |
929 | } | |
930 | ||
31c221c4 HH |
931 | if ((rxdesc->descwb.flags & cpu_to_le16(RXWBFLAG_DEST)) == |
932 | cpu_to_le16(RXWBFLAG_DEST_MUL)) | |
95252236 GFT |
933 | ++(NET_STAT(jme).multicast); |
934 | ||
95252236 GFT |
935 | NET_STAT(jme).rx_bytes += framesize; |
936 | ++(NET_STAT(jme).rx_packets); | |
937 | } | |
938 | ||
939 | jme_set_clean_rxdesc(jme, idx); | |
940 | ||
941 | } | |
942 | ||
943 | static int | |
944 | jme_process_receive(struct jme_adapter *jme, int limit) | |
945 | { | |
946 | struct jme_ring *rxring = &(jme->rxring[0]); | |
947 | struct rxdesc *rxdesc = rxring->desc; | |
948 | int i, j, ccnt, desccnt, mask = jme->rx_ring_mask; | |
949 | ||
950 | if (unlikely(!atomic_dec_and_test(&jme->rx_cleaning))) | |
951 | goto out_inc; | |
952 | ||
953 | if (unlikely(atomic_read(&jme->link_changing) != 1)) | |
954 | goto out_inc; | |
955 | ||
956 | if (unlikely(!netif_carrier_ok(jme->dev))) | |
957 | goto out_inc; | |
958 | ||
959 | i = atomic_read(&rxring->next_to_clean); | |
960 | while (limit-- > 0) { | |
961 | rxdesc = rxring->desc; | |
962 | rxdesc += i; | |
963 | ||
31c221c4 | 964 | if ((rxdesc->descwb.flags & cpu_to_le16(RXWBFLAG_OWN)) || |
95252236 GFT |
965 | !(rxdesc->descwb.desccnt & RXWBDCNT_WBCPL)) |
966 | goto out; | |
967 | ||
968 | desccnt = rxdesc->descwb.desccnt & RXWBDCNT_DCNT; | |
969 | ||
970 | if (unlikely(desccnt > 1 || | |
971 | rxdesc->descwb.errstat & RXWBERR_ALLERR)) { | |
972 | ||
973 | if (rxdesc->descwb.errstat & RXWBERR_CRCERR) | |
974 | ++(NET_STAT(jme).rx_crc_errors); | |
975 | else if (rxdesc->descwb.errstat & RXWBERR_OVERUN) | |
976 | ++(NET_STAT(jme).rx_fifo_errors); | |
977 | else | |
978 | ++(NET_STAT(jme).rx_errors); | |
979 | ||
980 | if (desccnt > 1) | |
981 | limit -= desccnt - 1; | |
982 | ||
983 | for (j = i, ccnt = desccnt ; ccnt-- ; ) { | |
984 | jme_set_clean_rxdesc(jme, j); | |
985 | j = (j + 1) & (mask); | |
986 | } | |
987 | ||
988 | } else { | |
989 | jme_alloc_and_feed_skb(jme, i); | |
990 | } | |
991 | ||
992 | i = (i + desccnt) & (mask); | |
993 | } | |
994 | ||
995 | out: | |
996 | atomic_set(&rxring->next_to_clean, i); | |
997 | ||
998 | out_inc: | |
999 | atomic_inc(&jme->rx_cleaning); | |
1000 | ||
1001 | return limit > 0 ? limit : 0; | |
1002 | ||
1003 | } | |
1004 | ||
1005 | static void | |
1006 | jme_attempt_pcc(struct dynpcc_info *dpi, int atmp) | |
1007 | { | |
1008 | if (likely(atmp == dpi->cur)) { | |
1009 | dpi->cnt = 0; | |
1010 | return; | |
1011 | } | |
1012 | ||
1013 | if (dpi->attempt == atmp) { | |
1014 | ++(dpi->cnt); | |
1015 | } else { | |
1016 | dpi->attempt = atmp; | |
1017 | dpi->cnt = 0; | |
1018 | } | |
1019 | ||
1020 | } | |
1021 | ||
1022 | static void | |
1023 | jme_dynamic_pcc(struct jme_adapter *jme) | |
1024 | { | |
1025 | register struct dynpcc_info *dpi = &(jme->dpi); | |
1026 | ||
1027 | if ((NET_STAT(jme).rx_bytes - dpi->last_bytes) > PCC_P3_THRESHOLD) | |
1028 | jme_attempt_pcc(dpi, PCC_P3); | |
1029 | else if ((NET_STAT(jme).rx_packets - dpi->last_pkts) > PCC_P2_THRESHOLD | |
1030 | || dpi->intr_cnt > PCC_INTR_THRESHOLD) | |
1031 | jme_attempt_pcc(dpi, PCC_P2); | |
1032 | else | |
1033 | jme_attempt_pcc(dpi, PCC_P1); | |
1034 | ||
1035 | if (unlikely(dpi->attempt != dpi->cur && dpi->cnt > 5)) { | |
1036 | if (dpi->attempt < dpi->cur) | |
1037 | tasklet_schedule(&jme->rxclean_task); | |
1038 | jme_set_rx_pcc(jme, dpi->attempt); | |
1039 | dpi->cur = dpi->attempt; | |
1040 | dpi->cnt = 0; | |
1041 | } | |
1042 | } | |
1043 | ||
1044 | static void | |
1045 | jme_start_pcc_timer(struct jme_adapter *jme) | |
1046 | { | |
1047 | struct dynpcc_info *dpi = &(jme->dpi); | |
1048 | dpi->last_bytes = NET_STAT(jme).rx_bytes; | |
1049 | dpi->last_pkts = NET_STAT(jme).rx_packets; | |
1050 | dpi->intr_cnt = 0; | |
1051 | jwrite32(jme, JME_TMCSR, | |
1052 | TMCSR_EN | ((0xFFFFFF - PCC_INTERVAL_US) & TMCSR_CNT)); | |
1053 | } | |
1054 | ||
1055 | static inline void | |
1056 | jme_stop_pcc_timer(struct jme_adapter *jme) | |
1057 | { | |
1058 | jwrite32(jme, JME_TMCSR, 0); | |
1059 | } | |
1060 | ||
1061 | static void | |
1062 | jme_shutdown_nic(struct jme_adapter *jme) | |
1063 | { | |
1064 | u32 phylink; | |
1065 | ||
1066 | phylink = jme_linkstat_from_phy(jme); | |
1067 | ||
1068 | if (!(phylink & PHY_LINK_UP)) { | |
1069 | /* | |
1070 | * Disable all interrupt before issue timer | |
1071 | */ | |
1072 | jme_stop_irq(jme); | |
1073 | jwrite32(jme, JME_TIMER2, TMCSR_EN | 0xFFFFFE); | |
1074 | } | |
1075 | } | |
1076 | ||
1077 | static void | |
1078 | jme_pcc_tasklet(unsigned long arg) | |
1079 | { | |
1080 | struct jme_adapter *jme = (struct jme_adapter *)arg; | |
1081 | struct net_device *netdev = jme->dev; | |
1082 | ||
1083 | if (unlikely(test_bit(JME_FLAG_SHUTDOWN, &jme->flags))) { | |
1084 | jme_shutdown_nic(jme); | |
1085 | return; | |
1086 | } | |
1087 | ||
1088 | if (unlikely(!netif_carrier_ok(netdev) || | |
1089 | (atomic_read(&jme->link_changing) != 1) | |
1090 | )) { | |
1091 | jme_stop_pcc_timer(jme); | |
1092 | return; | |
1093 | } | |
1094 | ||
1095 | if (!(test_bit(JME_FLAG_POLL, &jme->flags))) | |
1096 | jme_dynamic_pcc(jme); | |
1097 | ||
1098 | jme_start_pcc_timer(jme); | |
1099 | } | |
1100 | ||
1101 | static inline void | |
1102 | jme_polling_mode(struct jme_adapter *jme) | |
1103 | { | |
1104 | jme_set_rx_pcc(jme, PCC_OFF); | |
1105 | } | |
1106 | ||
1107 | static inline void | |
1108 | jme_interrupt_mode(struct jme_adapter *jme) | |
1109 | { | |
1110 | jme_set_rx_pcc(jme, PCC_P1); | |
1111 | } | |
1112 | ||
1113 | static inline int | |
1114 | jme_pseudo_hotplug_enabled(struct jme_adapter *jme) | |
1115 | { | |
1116 | u32 apmc; | |
1117 | apmc = jread32(jme, JME_APMC); | |
1118 | return apmc & JME_APMC_PSEUDO_HP_EN; | |
1119 | } | |
1120 | ||
1121 | static void | |
1122 | jme_start_shutdown_timer(struct jme_adapter *jme) | |
1123 | { | |
1124 | u32 apmc; | |
1125 | ||
1126 | apmc = jread32(jme, JME_APMC) | JME_APMC_PCIE_SD_EN; | |
1127 | apmc &= ~JME_APMC_EPIEN_CTRL; | |
1128 | if (!no_extplug) { | |
1129 | jwrite32f(jme, JME_APMC, apmc | JME_APMC_EPIEN_CTRL_EN); | |
1130 | wmb(); | |
1131 | } | |
1132 | jwrite32f(jme, JME_APMC, apmc); | |
1133 | ||
1134 | jwrite32f(jme, JME_TIMER2, 0); | |
1135 | set_bit(JME_FLAG_SHUTDOWN, &jme->flags); | |
1136 | jwrite32(jme, JME_TMCSR, | |
1137 | TMCSR_EN | ((0xFFFFFF - APMC_PHP_SHUTDOWN_DELAY) & TMCSR_CNT)); | |
1138 | } | |
1139 | ||
1140 | static void | |
1141 | jme_stop_shutdown_timer(struct jme_adapter *jme) | |
1142 | { | |
1143 | u32 apmc; | |
1144 | ||
1145 | jwrite32f(jme, JME_TMCSR, 0); | |
1146 | jwrite32f(jme, JME_TIMER2, 0); | |
1147 | clear_bit(JME_FLAG_SHUTDOWN, &jme->flags); | |
1148 | ||
1149 | apmc = jread32(jme, JME_APMC); | |
1150 | apmc &= ~(JME_APMC_PCIE_SD_EN | JME_APMC_EPIEN_CTRL); | |
1151 | jwrite32f(jme, JME_APMC, apmc | JME_APMC_EPIEN_CTRL_DIS); | |
1152 | wmb(); | |
1153 | jwrite32f(jme, JME_APMC, apmc); | |
1154 | } | |
1155 | ||
1156 | static void | |
1157 | jme_link_change_tasklet(unsigned long arg) | |
1158 | { | |
1159 | struct jme_adapter *jme = (struct jme_adapter *)arg; | |
1160 | struct net_device *netdev = jme->dev; | |
1161 | int rc; | |
1162 | ||
1163 | while (!atomic_dec_and_test(&jme->link_changing)) { | |
1164 | atomic_inc(&jme->link_changing); | |
1165 | msg_intr(jme, "Get link change lock failed.\n"); | |
1166 | while (atomic_read(&jme->link_changing) != 1) | |
1167 | msg_intr(jme, "Waiting link change lock.\n"); | |
1168 | } | |
1169 | ||
1170 | if (jme_check_link(netdev, 1) && jme->old_mtu == netdev->mtu) | |
1171 | goto out; | |
1172 | ||
1173 | jme->old_mtu = netdev->mtu; | |
1174 | netif_stop_queue(netdev); | |
1175 | if (jme_pseudo_hotplug_enabled(jme)) | |
1176 | jme_stop_shutdown_timer(jme); | |
1177 | ||
1178 | jme_stop_pcc_timer(jme); | |
1179 | tasklet_disable(&jme->txclean_task); | |
1180 | tasklet_disable(&jme->rxclean_task); | |
1181 | tasklet_disable(&jme->rxempty_task); | |
1182 | ||
1183 | if (netif_carrier_ok(netdev)) { | |
1184 | jme_reset_ghc_speed(jme); | |
1185 | jme_disable_rx_engine(jme); | |
1186 | jme_disable_tx_engine(jme); | |
1187 | jme_reset_mac_processor(jme); | |
1188 | jme_free_rx_resources(jme); | |
1189 | jme_free_tx_resources(jme); | |
1190 | ||
1191 | if (test_bit(JME_FLAG_POLL, &jme->flags)) | |
1192 | jme_polling_mode(jme); | |
1193 | ||
1194 | netif_carrier_off(netdev); | |
1195 | } | |
1196 | ||
1197 | jme_check_link(netdev, 0); | |
1198 | if (netif_carrier_ok(netdev)) { | |
1199 | rc = jme_setup_rx_resources(jme); | |
1200 | if (rc) { | |
1201 | jeprintk(jme->pdev, "Allocating resources for RX error" | |
1202 | ", Device STOPPED!\n"); | |
1203 | goto out_enable_tasklet; | |
1204 | } | |
1205 | ||
1206 | rc = jme_setup_tx_resources(jme); | |
1207 | if (rc) { | |
1208 | jeprintk(jme->pdev, "Allocating resources for TX error" | |
1209 | ", Device STOPPED!\n"); | |
1210 | goto err_out_free_rx_resources; | |
1211 | } | |
1212 | ||
1213 | jme_enable_rx_engine(jme); | |
1214 | jme_enable_tx_engine(jme); | |
1215 | ||
1216 | netif_start_queue(netdev); | |
1217 | ||
1218 | if (test_bit(JME_FLAG_POLL, &jme->flags)) | |
1219 | jme_interrupt_mode(jme); | |
1220 | ||
1221 | jme_start_pcc_timer(jme); | |
1222 | } else if (jme_pseudo_hotplug_enabled(jme)) { | |
1223 | jme_start_shutdown_timer(jme); | |
1224 | } | |
1225 | ||
1226 | goto out_enable_tasklet; | |
1227 | ||
1228 | err_out_free_rx_resources: | |
1229 | jme_free_rx_resources(jme); | |
1230 | out_enable_tasklet: | |
1231 | tasklet_enable(&jme->txclean_task); | |
1232 | tasklet_hi_enable(&jme->rxclean_task); | |
1233 | tasklet_hi_enable(&jme->rxempty_task); | |
1234 | out: | |
1235 | atomic_inc(&jme->link_changing); | |
1236 | } | |
1237 | ||
1238 | static void | |
1239 | jme_rx_clean_tasklet(unsigned long arg) | |
1240 | { | |
1241 | struct jme_adapter *jme = (struct jme_adapter *)arg; | |
1242 | struct dynpcc_info *dpi = &(jme->dpi); | |
1243 | ||
1244 | jme_process_receive(jme, jme->rx_ring_size); | |
1245 | ++(dpi->intr_cnt); | |
1246 | ||
1247 | } | |
1248 | ||
1249 | static int | |
1250 | jme_poll(JME_NAPI_HOLDER(holder), JME_NAPI_WEIGHT(budget)) | |
1251 | { | |
1252 | struct jme_adapter *jme = jme_napi_priv(holder); | |
1253 | struct net_device *netdev = jme->dev; | |
1254 | int rest; | |
1255 | ||
1256 | rest = jme_process_receive(jme, JME_NAPI_WEIGHT_VAL(budget)); | |
1257 | ||
1258 | while (atomic_read(&jme->rx_empty) > 0) { | |
1259 | atomic_dec(&jme->rx_empty); | |
1260 | ++(NET_STAT(jme).rx_dropped); | |
1261 | jme_restart_rx_engine(jme); | |
1262 | } | |
1263 | atomic_inc(&jme->rx_empty); | |
1264 | ||
1265 | if (rest) { | |
1266 | JME_RX_COMPLETE(netdev, holder); | |
1267 | jme_interrupt_mode(jme); | |
1268 | } | |
1269 | ||
1270 | JME_NAPI_WEIGHT_SET(budget, rest); | |
1271 | return JME_NAPI_WEIGHT_VAL(budget) - rest; | |
1272 | } | |
1273 | ||
1274 | static void | |
1275 | jme_rx_empty_tasklet(unsigned long arg) | |
1276 | { | |
1277 | struct jme_adapter *jme = (struct jme_adapter *)arg; | |
1278 | ||
1279 | if (unlikely(atomic_read(&jme->link_changing) != 1)) | |
1280 | return; | |
1281 | ||
1282 | if (unlikely(!netif_carrier_ok(jme->dev))) | |
1283 | return; | |
1284 | ||
1285 | msg_rx_status(jme, "RX Queue Full!\n"); | |
1286 | ||
1287 | jme_rx_clean_tasklet(arg); | |
1288 | ||
1289 | while (atomic_read(&jme->rx_empty) > 0) { | |
1290 | atomic_dec(&jme->rx_empty); | |
1291 | ++(NET_STAT(jme).rx_dropped); | |
1292 | jme_restart_rx_engine(jme); | |
1293 | } | |
1294 | atomic_inc(&jme->rx_empty); | |
1295 | } | |
1296 | ||
1297 | static void | |
1298 | jme_wake_queue_if_stopped(struct jme_adapter *jme) | |
1299 | { | |
1300 | struct jme_ring *txring = jme->txring; | |
1301 | ||
1302 | smp_wmb(); | |
1303 | if (unlikely(netif_queue_stopped(jme->dev) && | |
1304 | atomic_read(&txring->nr_free) >= (jme->tx_wake_threshold))) { | |
1305 | msg_tx_done(jme, "TX Queue Waked.\n"); | |
1306 | netif_wake_queue(jme->dev); | |
1307 | } | |
1308 | ||
1309 | } | |
1310 | ||
1311 | static void | |
1312 | jme_tx_clean_tasklet(unsigned long arg) | |
1313 | { | |
1314 | struct jme_adapter *jme = (struct jme_adapter *)arg; | |
1315 | struct jme_ring *txring = &(jme->txring[0]); | |
1316 | struct txdesc *txdesc = txring->desc; | |
1317 | struct jme_buffer_info *txbi = txring->bufinf, *ctxbi, *ttxbi; | |
1318 | int i, j, cnt = 0, max, err, mask; | |
1319 | ||
1320 | tx_dbg(jme, "Into txclean.\n"); | |
1321 | ||
1322 | if (unlikely(!atomic_dec_and_test(&jme->tx_cleaning))) | |
1323 | goto out; | |
1324 | ||
1325 | if (unlikely(atomic_read(&jme->link_changing) != 1)) | |
1326 | goto out; | |
1327 | ||
1328 | if (unlikely(!netif_carrier_ok(jme->dev))) | |
1329 | goto out; | |
1330 | ||
1331 | max = jme->tx_ring_size - atomic_read(&txring->nr_free); | |
1332 | mask = jme->tx_ring_mask; | |
1333 | ||
1334 | for (i = atomic_read(&txring->next_to_clean) ; cnt < max ; ) { | |
1335 | ||
1336 | ctxbi = txbi + i; | |
1337 | ||
1338 | if (likely(ctxbi->skb && | |
1339 | !(txdesc[i].descwb.flags & TXWBFLAG_OWN))) { | |
1340 | ||
1341 | tx_dbg(jme, "txclean: %d+%d@%lu\n", | |
1342 | i, ctxbi->nr_desc, jiffies); | |
1343 | ||
1344 | err = txdesc[i].descwb.flags & TXWBFLAG_ALLERR; | |
1345 | ||
1346 | for (j = 1 ; j < ctxbi->nr_desc ; ++j) { | |
1347 | ttxbi = txbi + ((i + j) & (mask)); | |
1348 | txdesc[(i + j) & (mask)].dw[0] = 0; | |
1349 | ||
1350 | pci_unmap_page(jme->pdev, | |
1351 | ttxbi->mapping, | |
1352 | ttxbi->len, | |
1353 | PCI_DMA_TODEVICE); | |
1354 | ||
1355 | ttxbi->mapping = 0; | |
1356 | ttxbi->len = 0; | |
1357 | } | |
1358 | ||
1359 | dev_kfree_skb(ctxbi->skb); | |
1360 | ||
1361 | cnt += ctxbi->nr_desc; | |
1362 | ||
1363 | if (unlikely(err)) { | |
1364 | ++(NET_STAT(jme).tx_carrier_errors); | |
1365 | } else { | |
1366 | ++(NET_STAT(jme).tx_packets); | |
1367 | NET_STAT(jme).tx_bytes += ctxbi->len; | |
1368 | } | |
1369 | ||
1370 | ctxbi->skb = NULL; | |
1371 | ctxbi->len = 0; | |
1372 | ctxbi->start_xmit = 0; | |
1373 | ||
1374 | } else { | |
1375 | break; | |
1376 | } | |
1377 | ||
1378 | i = (i + ctxbi->nr_desc) & mask; | |
1379 | ||
1380 | ctxbi->nr_desc = 0; | |
1381 | } | |
1382 | ||
1383 | tx_dbg(jme, "txclean: done %d@%lu.\n", i, jiffies); | |
1384 | atomic_set(&txring->next_to_clean, i); | |
1385 | atomic_add(cnt, &txring->nr_free); | |
1386 | ||
1387 | jme_wake_queue_if_stopped(jme); | |
1388 | ||
1389 | out: | |
1390 | atomic_inc(&jme->tx_cleaning); | |
1391 | } | |
1392 | ||
1393 | static void | |
1394 | jme_intr_msi(struct jme_adapter *jme, u32 intrstat) | |
1395 | { | |
1396 | /* | |
1397 | * Disable interrupt | |
1398 | */ | |
1399 | jwrite32f(jme, JME_IENC, INTR_ENABLE); | |
1400 | ||
1401 | if (intrstat & (INTR_LINKCH | INTR_SWINTR)) { | |
1402 | /* | |
1403 | * Link change event is critical | |
1404 | * all other events are ignored | |
1405 | */ | |
1406 | jwrite32(jme, JME_IEVE, intrstat); | |
1407 | tasklet_schedule(&jme->linkch_task); | |
1408 | goto out_reenable; | |
1409 | } | |
1410 | ||
1411 | if (intrstat & INTR_TMINTR) { | |
1412 | jwrite32(jme, JME_IEVE, INTR_TMINTR); | |
1413 | tasklet_schedule(&jme->pcc_task); | |
1414 | } | |
1415 | ||
1416 | if (intrstat & (INTR_PCCTXTO | INTR_PCCTX)) { | |
1417 | jwrite32(jme, JME_IEVE, INTR_PCCTXTO | INTR_PCCTX | INTR_TX0); | |
1418 | tasklet_schedule(&jme->txclean_task); | |
1419 | } | |
1420 | ||
1421 | if ((intrstat & (INTR_PCCRX0TO | INTR_PCCRX0 | INTR_RX0EMP))) { | |
1422 | jwrite32(jme, JME_IEVE, (intrstat & (INTR_PCCRX0TO | | |
1423 | INTR_PCCRX0 | | |
1424 | INTR_RX0EMP)) | | |
1425 | INTR_RX0); | |
1426 | } | |
1427 | ||
1428 | if (test_bit(JME_FLAG_POLL, &jme->flags)) { | |
1429 | if (intrstat & INTR_RX0EMP) | |
1430 | atomic_inc(&jme->rx_empty); | |
1431 | ||
1432 | if ((intrstat & (INTR_PCCRX0TO | INTR_PCCRX0 | INTR_RX0EMP))) { | |
1433 | if (likely(JME_RX_SCHEDULE_PREP(jme))) { | |
1434 | jme_polling_mode(jme); | |
1435 | JME_RX_SCHEDULE(jme); | |
1436 | } | |
1437 | } | |
1438 | } else { | |
1439 | if (intrstat & INTR_RX0EMP) { | |
1440 | atomic_inc(&jme->rx_empty); | |
1441 | tasklet_hi_schedule(&jme->rxempty_task); | |
1442 | } else if (intrstat & (INTR_PCCRX0TO | INTR_PCCRX0)) { | |
1443 | tasklet_hi_schedule(&jme->rxclean_task); | |
1444 | } | |
1445 | } | |
1446 | ||
1447 | out_reenable: | |
1448 | /* | |
1449 | * Re-enable interrupt | |
1450 | */ | |
1451 | jwrite32f(jme, JME_IENS, INTR_ENABLE); | |
1452 | } | |
1453 | ||
1454 | static irqreturn_t | |
1455 | jme_intr(int irq, void *dev_id) | |
1456 | { | |
1457 | struct net_device *netdev = dev_id; | |
1458 | struct jme_adapter *jme = netdev_priv(netdev); | |
1459 | u32 intrstat; | |
1460 | ||
1461 | intrstat = jread32(jme, JME_IEVE); | |
1462 | ||
1463 | /* | |
1464 | * Check if it's really an interrupt for us | |
1465 | */ | |
576b5223 | 1466 | if (unlikely((intrstat & INTR_ENABLE) == 0)) |
95252236 GFT |
1467 | return IRQ_NONE; |
1468 | ||
1469 | /* | |
1470 | * Check if the device still exist | |
1471 | */ | |
1472 | if (unlikely(intrstat == ~((typeof(intrstat))0))) | |
1473 | return IRQ_NONE; | |
1474 | ||
1475 | jme_intr_msi(jme, intrstat); | |
1476 | ||
1477 | return IRQ_HANDLED; | |
1478 | } | |
1479 | ||
1480 | static irqreturn_t | |
1481 | jme_msi(int irq, void *dev_id) | |
1482 | { | |
1483 | struct net_device *netdev = dev_id; | |
1484 | struct jme_adapter *jme = netdev_priv(netdev); | |
1485 | u32 intrstat; | |
1486 | ||
1487 | pci_dma_sync_single_for_cpu(jme->pdev, | |
1488 | jme->shadow_dma, | |
1489 | sizeof(u32) * SHADOW_REG_NR, | |
1490 | PCI_DMA_FROMDEVICE); | |
1491 | intrstat = jme->shadow_regs[SHADOW_IEVE]; | |
1492 | jme->shadow_regs[SHADOW_IEVE] = 0; | |
1493 | ||
1494 | jme_intr_msi(jme, intrstat); | |
1495 | ||
1496 | return IRQ_HANDLED; | |
1497 | } | |
1498 | ||
1499 | static void | |
1500 | jme_reset_link(struct jme_adapter *jme) | |
1501 | { | |
1502 | jwrite32(jme, JME_TMCSR, TMCSR_SWIT); | |
1503 | } | |
1504 | ||
1505 | static void | |
1506 | jme_restart_an(struct jme_adapter *jme) | |
1507 | { | |
1508 | u32 bmcr; | |
1509 | ||
1510 | spin_lock_bh(&jme->phy_lock); | |
1511 | bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR); | |
1512 | bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART); | |
1513 | jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, bmcr); | |
1514 | spin_unlock_bh(&jme->phy_lock); | |
1515 | } | |
1516 | ||
1517 | static int | |
1518 | jme_request_irq(struct jme_adapter *jme) | |
1519 | { | |
1520 | int rc; | |
1521 | struct net_device *netdev = jme->dev; | |
1522 | irq_handler_t handler = jme_intr; | |
1523 | int irq_flags = IRQF_SHARED; | |
1524 | ||
1525 | if (!pci_enable_msi(jme->pdev)) { | |
1526 | set_bit(JME_FLAG_MSI, &jme->flags); | |
1527 | handler = jme_msi; | |
1528 | irq_flags = 0; | |
1529 | } | |
1530 | ||
1531 | rc = request_irq(jme->pdev->irq, handler, irq_flags, netdev->name, | |
1532 | netdev); | |
1533 | if (rc) { | |
1534 | jeprintk(jme->pdev, | |
1535 | "Unable to request %s interrupt (return: %d)\n", | |
1536 | test_bit(JME_FLAG_MSI, &jme->flags) ? "MSI" : "INTx", | |
1537 | rc); | |
1538 | ||
1539 | if (test_bit(JME_FLAG_MSI, &jme->flags)) { | |
1540 | pci_disable_msi(jme->pdev); | |
1541 | clear_bit(JME_FLAG_MSI, &jme->flags); | |
1542 | } | |
1543 | } else { | |
1544 | netdev->irq = jme->pdev->irq; | |
1545 | } | |
1546 | ||
1547 | return rc; | |
1548 | } | |
1549 | ||
1550 | static void | |
1551 | jme_free_irq(struct jme_adapter *jme) | |
1552 | { | |
1553 | free_irq(jme->pdev->irq, jme->dev); | |
1554 | if (test_bit(JME_FLAG_MSI, &jme->flags)) { | |
1555 | pci_disable_msi(jme->pdev); | |
1556 | clear_bit(JME_FLAG_MSI, &jme->flags); | |
1557 | jme->dev->irq = jme->pdev->irq; | |
1558 | } | |
1559 | } | |
1560 | ||
1561 | static int | |
1562 | jme_open(struct net_device *netdev) | |
1563 | { | |
1564 | struct jme_adapter *jme = netdev_priv(netdev); | |
1565 | int rc; | |
1566 | ||
1567 | jme_clear_pm(jme); | |
1568 | JME_NAPI_ENABLE(jme); | |
1569 | ||
1570 | tasklet_enable(&jme->txclean_task); | |
1571 | tasklet_hi_enable(&jme->rxclean_task); | |
1572 | tasklet_hi_enable(&jme->rxempty_task); | |
1573 | ||
1574 | rc = jme_request_irq(jme); | |
1575 | if (rc) | |
1576 | goto err_out; | |
1577 | ||
1578 | jme_enable_shadow(jme); | |
1579 | jme_start_irq(jme); | |
1580 | ||
1581 | if (test_bit(JME_FLAG_SSET, &jme->flags)) | |
1582 | jme_set_settings(netdev, &jme->old_ecmd); | |
1583 | else | |
1584 | jme_reset_phy_processor(jme); | |
1585 | ||
1586 | jme_reset_link(jme); | |
1587 | ||
1588 | return 0; | |
1589 | ||
1590 | err_out: | |
1591 | netif_stop_queue(netdev); | |
1592 | netif_carrier_off(netdev); | |
1593 | return rc; | |
1594 | } | |
1595 | ||
724f8805 | 1596 | #ifdef CONFIG_PM |
95252236 GFT |
1597 | static void |
1598 | jme_set_100m_half(struct jme_adapter *jme) | |
1599 | { | |
1600 | u32 bmcr, tmp; | |
1601 | ||
1602 | bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR); | |
1603 | tmp = bmcr & ~(BMCR_ANENABLE | BMCR_SPEED100 | | |
1604 | BMCR_SPEED1000 | BMCR_FULLDPLX); | |
1605 | tmp |= BMCR_SPEED100; | |
1606 | ||
1607 | if (bmcr != tmp) | |
1608 | jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, tmp); | |
1609 | ||
1610 | if (jme->fpgaver) | |
1611 | jwrite32(jme, JME_GHC, GHC_SPEED_100M | GHC_LINK_POLL); | |
1612 | else | |
1613 | jwrite32(jme, JME_GHC, GHC_SPEED_100M); | |
1614 | } | |
1615 | ||
1616 | #define JME_WAIT_LINK_TIME 2000 /* 2000ms */ | |
1617 | static void | |
1618 | jme_wait_link(struct jme_adapter *jme) | |
1619 | { | |
1620 | u32 phylink, to = JME_WAIT_LINK_TIME; | |
1621 | ||
1622 | mdelay(1000); | |
1623 | phylink = jme_linkstat_from_phy(jme); | |
1624 | while (!(phylink & PHY_LINK_UP) && (to -= 10) > 0) { | |
1625 | mdelay(10); | |
1626 | phylink = jme_linkstat_from_phy(jme); | |
1627 | } | |
1628 | } | |
724f8805 | 1629 | #endif |
95252236 GFT |
1630 | |
1631 | static inline void | |
1632 | jme_phy_off(struct jme_adapter *jme) | |
1633 | { | |
1634 | jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, BMCR_PDOWN); | |
1635 | } | |
1636 | ||
1637 | static int | |
1638 | jme_close(struct net_device *netdev) | |
1639 | { | |
1640 | struct jme_adapter *jme = netdev_priv(netdev); | |
1641 | ||
1642 | netif_stop_queue(netdev); | |
1643 | netif_carrier_off(netdev); | |
1644 | ||
1645 | jme_stop_irq(jme); | |
1646 | jme_disable_shadow(jme); | |
1647 | jme_free_irq(jme); | |
1648 | ||
1649 | JME_NAPI_DISABLE(jme); | |
1650 | ||
1651 | tasklet_kill(&jme->linkch_task); | |
1652 | tasklet_kill(&jme->txclean_task); | |
1653 | tasklet_kill(&jme->rxclean_task); | |
1654 | tasklet_kill(&jme->rxempty_task); | |
1655 | ||
1656 | jme_reset_ghc_speed(jme); | |
1657 | jme_disable_rx_engine(jme); | |
1658 | jme_disable_tx_engine(jme); | |
1659 | jme_reset_mac_processor(jme); | |
1660 | jme_free_rx_resources(jme); | |
1661 | jme_free_tx_resources(jme); | |
1662 | jme->phylink = 0; | |
1663 | jme_phy_off(jme); | |
1664 | ||
1665 | return 0; | |
1666 | } | |
1667 | ||
1668 | static int | |
1669 | jme_alloc_txdesc(struct jme_adapter *jme, | |
1670 | struct sk_buff *skb) | |
1671 | { | |
1672 | struct jme_ring *txring = jme->txring; | |
1673 | int idx, nr_alloc, mask = jme->tx_ring_mask; | |
1674 | ||
1675 | idx = txring->next_to_use; | |
1676 | nr_alloc = skb_shinfo(skb)->nr_frags + 2; | |
1677 | ||
1678 | if (unlikely(atomic_read(&txring->nr_free) < nr_alloc)) | |
1679 | return -1; | |
1680 | ||
1681 | atomic_sub(nr_alloc, &txring->nr_free); | |
1682 | ||
1683 | txring->next_to_use = (txring->next_to_use + nr_alloc) & mask; | |
1684 | ||
1685 | return idx; | |
1686 | } | |
1687 | ||
1688 | static void | |
1689 | jme_fill_tx_map(struct pci_dev *pdev, | |
1690 | struct txdesc *txdesc, | |
1691 | struct jme_buffer_info *txbi, | |
1692 | struct page *page, | |
1693 | u32 page_offset, | |
1694 | u32 len, | |
1695 | u8 hidma) | |
1696 | { | |
1697 | dma_addr_t dmaaddr; | |
1698 | ||
1699 | dmaaddr = pci_map_page(pdev, | |
1700 | page, | |
1701 | page_offset, | |
1702 | len, | |
1703 | PCI_DMA_TODEVICE); | |
1704 | ||
1705 | pci_dma_sync_single_for_device(pdev, | |
1706 | dmaaddr, | |
1707 | len, | |
1708 | PCI_DMA_TODEVICE); | |
1709 | ||
1710 | txdesc->dw[0] = 0; | |
1711 | txdesc->dw[1] = 0; | |
1712 | txdesc->desc2.flags = TXFLAG_OWN; | |
1713 | txdesc->desc2.flags |= (hidma) ? TXFLAG_64BIT : 0; | |
1714 | txdesc->desc2.datalen = cpu_to_le16(len); | |
1715 | txdesc->desc2.bufaddrh = cpu_to_le32((__u64)dmaaddr >> 32); | |
1716 | txdesc->desc2.bufaddrl = cpu_to_le32( | |
1717 | (__u64)dmaaddr & 0xFFFFFFFFUL); | |
1718 | ||
1719 | txbi->mapping = dmaaddr; | |
1720 | txbi->len = len; | |
1721 | } | |
1722 | ||
1723 | static void | |
1724 | jme_map_tx_skb(struct jme_adapter *jme, struct sk_buff *skb, int idx) | |
1725 | { | |
1726 | struct jme_ring *txring = jme->txring; | |
1727 | struct txdesc *txdesc = txring->desc, *ctxdesc; | |
1728 | struct jme_buffer_info *txbi = txring->bufinf, *ctxbi; | |
1729 | u8 hidma = jme->dev->features & NETIF_F_HIGHDMA; | |
1730 | int i, nr_frags = skb_shinfo(skb)->nr_frags; | |
1731 | int mask = jme->tx_ring_mask; | |
1732 | struct skb_frag_struct *frag; | |
1733 | u32 len; | |
1734 | ||
1735 | for (i = 0 ; i < nr_frags ; ++i) { | |
1736 | frag = &skb_shinfo(skb)->frags[i]; | |
1737 | ctxdesc = txdesc + ((idx + i + 2) & (mask)); | |
1738 | ctxbi = txbi + ((idx + i + 2) & (mask)); | |
1739 | ||
1740 | jme_fill_tx_map(jme->pdev, ctxdesc, ctxbi, frag->page, | |
1741 | frag->page_offset, frag->size, hidma); | |
1742 | } | |
1743 | ||
1744 | len = skb_is_nonlinear(skb) ? skb_headlen(skb) : skb->len; | |
1745 | ctxdesc = txdesc + ((idx + 1) & (mask)); | |
1746 | ctxbi = txbi + ((idx + 1) & (mask)); | |
1747 | jme_fill_tx_map(jme->pdev, ctxdesc, ctxbi, virt_to_page(skb->data), | |
1748 | offset_in_page(skb->data), len, hidma); | |
1749 | ||
1750 | } | |
1751 | ||
1752 | static int | |
1753 | jme_expand_header(struct jme_adapter *jme, struct sk_buff *skb) | |
1754 | { | |
1755 | if (unlikely(skb_shinfo(skb)->gso_size && | |
1756 | skb_header_cloned(skb) && | |
1757 | pskb_expand_head(skb, 0, 0, GFP_ATOMIC))) { | |
1758 | dev_kfree_skb(skb); | |
1759 | return -1; | |
1760 | } | |
1761 | ||
1762 | return 0; | |
1763 | } | |
1764 | ||
1765 | static int | |
31c221c4 | 1766 | jme_tx_tso(struct sk_buff *skb, __le16 *mss, u8 *flags) |
95252236 | 1767 | { |
31c221c4 | 1768 | *mss = cpu_to_le16(skb_shinfo(skb)->gso_size << TXDESC_MSS_SHIFT); |
95252236 GFT |
1769 | if (*mss) { |
1770 | *flags |= TXFLAG_LSEN; | |
1771 | ||
1772 | if (skb->protocol == htons(ETH_P_IP)) { | |
1773 | struct iphdr *iph = ip_hdr(skb); | |
1774 | ||
1775 | iph->check = 0; | |
1776 | tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, | |
1777 | iph->daddr, 0, | |
1778 | IPPROTO_TCP, | |
1779 | 0); | |
1780 | } else { | |
1781 | struct ipv6hdr *ip6h = ipv6_hdr(skb); | |
1782 | ||
1783 | tcp_hdr(skb)->check = ~csum_ipv6_magic(&ip6h->saddr, | |
1784 | &ip6h->daddr, 0, | |
1785 | IPPROTO_TCP, | |
1786 | 0); | |
1787 | } | |
1788 | ||
1789 | return 0; | |
1790 | } | |
1791 | ||
1792 | return 1; | |
1793 | } | |
1794 | ||
1795 | static void | |
1796 | jme_tx_csum(struct jme_adapter *jme, struct sk_buff *skb, u8 *flags) | |
1797 | { | |
1798 | if (skb->ip_summed == CHECKSUM_PARTIAL) { | |
1799 | u8 ip_proto; | |
1800 | ||
1801 | switch (skb->protocol) { | |
1802 | case htons(ETH_P_IP): | |
1803 | ip_proto = ip_hdr(skb)->protocol; | |
1804 | break; | |
1805 | case htons(ETH_P_IPV6): | |
1806 | ip_proto = ipv6_hdr(skb)->nexthdr; | |
1807 | break; | |
1808 | default: | |
1809 | ip_proto = 0; | |
1810 | break; | |
1811 | } | |
1812 | ||
1813 | switch (ip_proto) { | |
1814 | case IPPROTO_TCP: | |
1815 | *flags |= TXFLAG_TCPCS; | |
1816 | break; | |
1817 | case IPPROTO_UDP: | |
1818 | *flags |= TXFLAG_UDPCS; | |
1819 | break; | |
1820 | default: | |
1821 | msg_tx_err(jme, "Error upper layer protocol.\n"); | |
1822 | break; | |
1823 | } | |
1824 | } | |
1825 | } | |
1826 | ||
1827 | static inline void | |
31c221c4 | 1828 | jme_tx_vlan(struct sk_buff *skb, __le16 *vlan, u8 *flags) |
95252236 GFT |
1829 | { |
1830 | if (vlan_tx_tag_present(skb)) { | |
1831 | *flags |= TXFLAG_TAGON; | |
31c221c4 | 1832 | *vlan = cpu_to_le16(vlan_tx_tag_get(skb)); |
95252236 GFT |
1833 | } |
1834 | } | |
1835 | ||
1836 | static int | |
1837 | jme_fill_first_tx_desc(struct jme_adapter *jme, struct sk_buff *skb, int idx) | |
1838 | { | |
1839 | struct jme_ring *txring = jme->txring; | |
1840 | struct txdesc *txdesc; | |
1841 | struct jme_buffer_info *txbi; | |
1842 | u8 flags; | |
1843 | ||
1844 | txdesc = (struct txdesc *)txring->desc + idx; | |
1845 | txbi = txring->bufinf + idx; | |
1846 | ||
1847 | txdesc->dw[0] = 0; | |
1848 | txdesc->dw[1] = 0; | |
1849 | txdesc->dw[2] = 0; | |
1850 | txdesc->dw[3] = 0; | |
1851 | txdesc->desc1.pktsize = cpu_to_le16(skb->len); | |
1852 | /* | |
1853 | * Set OWN bit at final. | |
1854 | * When kernel transmit faster than NIC. | |
1855 | * And NIC trying to send this descriptor before we tell | |
1856 | * it to start sending this TX queue. | |
1857 | * Other fields are already filled correctly. | |
1858 | */ | |
1859 | wmb(); | |
1860 | flags = TXFLAG_OWN | TXFLAG_INT; | |
1861 | /* | |
1862 | * Set checksum flags while not tso | |
1863 | */ | |
1864 | if (jme_tx_tso(skb, &txdesc->desc1.mss, &flags)) | |
1865 | jme_tx_csum(jme, skb, &flags); | |
1866 | jme_tx_vlan(skb, &txdesc->desc1.vlan, &flags); | |
1867 | txdesc->desc1.flags = flags; | |
1868 | /* | |
1869 | * Set tx buffer info after telling NIC to send | |
1870 | * For better tx_clean timing | |
1871 | */ | |
1872 | wmb(); | |
1873 | txbi->nr_desc = skb_shinfo(skb)->nr_frags + 2; | |
1874 | txbi->skb = skb; | |
1875 | txbi->len = skb->len; | |
1876 | txbi->start_xmit = jiffies; | |
1877 | if (!txbi->start_xmit) | |
1878 | txbi->start_xmit = (0UL-1); | |
1879 | ||
1880 | return 0; | |
1881 | } | |
1882 | ||
1883 | static void | |
1884 | jme_stop_queue_if_full(struct jme_adapter *jme) | |
1885 | { | |
1886 | struct jme_ring *txring = jme->txring; | |
1887 | struct jme_buffer_info *txbi = txring->bufinf; | |
1888 | int idx = atomic_read(&txring->next_to_clean); | |
1889 | ||
1890 | txbi += idx; | |
1891 | ||
1892 | smp_wmb(); | |
1893 | if (unlikely(atomic_read(&txring->nr_free) < (MAX_SKB_FRAGS+2))) { | |
1894 | netif_stop_queue(jme->dev); | |
1895 | msg_tx_queued(jme, "TX Queue Paused.\n"); | |
1896 | smp_wmb(); | |
1897 | if (atomic_read(&txring->nr_free) | |
1898 | >= (jme->tx_wake_threshold)) { | |
1899 | netif_wake_queue(jme->dev); | |
1900 | msg_tx_queued(jme, "TX Queue Fast Waked.\n"); | |
1901 | } | |
1902 | } | |
1903 | ||
1904 | if (unlikely(txbi->start_xmit && | |
1905 | (jiffies - txbi->start_xmit) >= TX_TIMEOUT && | |
1906 | txbi->skb)) { | |
1907 | netif_stop_queue(jme->dev); | |
1908 | msg_tx_queued(jme, "TX Queue Stopped %d@%lu.\n", idx, jiffies); | |
1909 | } | |
1910 | } | |
1911 | ||
1912 | /* | |
1913 | * This function is already protected by netif_tx_lock() | |
1914 | */ | |
1915 | ||
1916 | static int | |
1917 | jme_start_xmit(struct sk_buff *skb, struct net_device *netdev) | |
1918 | { | |
1919 | struct jme_adapter *jme = netdev_priv(netdev); | |
1920 | int idx; | |
1921 | ||
1922 | if (unlikely(jme_expand_header(jme, skb))) { | |
1923 | ++(NET_STAT(jme).tx_dropped); | |
1924 | return NETDEV_TX_OK; | |
1925 | } | |
1926 | ||
1927 | idx = jme_alloc_txdesc(jme, skb); | |
1928 | ||
1929 | if (unlikely(idx < 0)) { | |
1930 | netif_stop_queue(netdev); | |
1931 | msg_tx_err(jme, "BUG! Tx ring full when queue awake!\n"); | |
1932 | ||
1933 | return NETDEV_TX_BUSY; | |
1934 | } | |
1935 | ||
1936 | jme_map_tx_skb(jme, skb, idx); | |
1937 | jme_fill_first_tx_desc(jme, skb, idx); | |
1938 | ||
1939 | jwrite32(jme, JME_TXCS, jme->reg_txcs | | |
1940 | TXCS_SELECT_QUEUE0 | | |
1941 | TXCS_QUEUE0S | | |
1942 | TXCS_ENABLE); | |
1943 | netdev->trans_start = jiffies; | |
1944 | ||
1945 | tx_dbg(jme, "xmit: %d+%d@%lu\n", idx, | |
1946 | skb_shinfo(skb)->nr_frags + 2, | |
1947 | jiffies); | |
1948 | jme_stop_queue_if_full(jme); | |
1949 | ||
1950 | return NETDEV_TX_OK; | |
1951 | } | |
1952 | ||
1953 | static int | |
1954 | jme_set_macaddr(struct net_device *netdev, void *p) | |
1955 | { | |
1956 | struct jme_adapter *jme = netdev_priv(netdev); | |
1957 | struct sockaddr *addr = p; | |
1958 | u32 val; | |
1959 | ||
1960 | if (netif_running(netdev)) | |
1961 | return -EBUSY; | |
1962 | ||
1963 | spin_lock_bh(&jme->macaddr_lock); | |
1964 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
1965 | ||
1966 | val = (addr->sa_data[3] & 0xff) << 24 | | |
1967 | (addr->sa_data[2] & 0xff) << 16 | | |
1968 | (addr->sa_data[1] & 0xff) << 8 | | |
1969 | (addr->sa_data[0] & 0xff); | |
1970 | jwrite32(jme, JME_RXUMA_LO, val); | |
1971 | val = (addr->sa_data[5] & 0xff) << 8 | | |
1972 | (addr->sa_data[4] & 0xff); | |
1973 | jwrite32(jme, JME_RXUMA_HI, val); | |
1974 | spin_unlock_bh(&jme->macaddr_lock); | |
1975 | ||
1976 | return 0; | |
1977 | } | |
1978 | ||
1979 | static void | |
1980 | jme_set_multi(struct net_device *netdev) | |
1981 | { | |
1982 | struct jme_adapter *jme = netdev_priv(netdev); | |
1983 | u32 mc_hash[2] = {}; | |
1984 | int i; | |
1985 | ||
1986 | spin_lock_bh(&jme->rxmcs_lock); | |
1987 | ||
1988 | jme->reg_rxmcs |= RXMCS_BRDFRAME | RXMCS_UNIFRAME; | |
1989 | ||
1990 | if (netdev->flags & IFF_PROMISC) { | |
1991 | jme->reg_rxmcs |= RXMCS_ALLFRAME; | |
1992 | } else if (netdev->flags & IFF_ALLMULTI) { | |
1993 | jme->reg_rxmcs |= RXMCS_ALLMULFRAME; | |
1994 | } else if (netdev->flags & IFF_MULTICAST) { | |
1995 | struct dev_mc_list *mclist; | |
1996 | int bit_nr; | |
1997 | ||
1998 | jme->reg_rxmcs |= RXMCS_MULFRAME | RXMCS_MULFILTERED; | |
1999 | for (i = 0, mclist = netdev->mc_list; | |
2000 | mclist && i < netdev->mc_count; | |
2001 | ++i, mclist = mclist->next) { | |
2002 | ||
2003 | bit_nr = ether_crc(ETH_ALEN, mclist->dmi_addr) & 0x3F; | |
2004 | mc_hash[bit_nr >> 5] |= 1 << (bit_nr & 0x1F); | |
2005 | } | |
2006 | ||
2007 | jwrite32(jme, JME_RXMCHT_LO, mc_hash[0]); | |
2008 | jwrite32(jme, JME_RXMCHT_HI, mc_hash[1]); | |
2009 | } | |
2010 | ||
2011 | wmb(); | |
2012 | jwrite32(jme, JME_RXMCS, jme->reg_rxmcs); | |
2013 | ||
2014 | spin_unlock_bh(&jme->rxmcs_lock); | |
2015 | } | |
2016 | ||
2017 | static int | |
2018 | jme_change_mtu(struct net_device *netdev, int new_mtu) | |
2019 | { | |
2020 | struct jme_adapter *jme = netdev_priv(netdev); | |
2021 | ||
2022 | if (new_mtu == jme->old_mtu) | |
2023 | return 0; | |
2024 | ||
2025 | if (((new_mtu + ETH_HLEN) > MAX_ETHERNET_JUMBO_PACKET_SIZE) || | |
2026 | ((new_mtu) < IPV6_MIN_MTU)) | |
2027 | return -EINVAL; | |
2028 | ||
2029 | if (new_mtu > 4000) { | |
2030 | jme->reg_rxcs &= ~RXCS_FIFOTHNP; | |
2031 | jme->reg_rxcs |= RXCS_FIFOTHNP_64QW; | |
2032 | jme_restart_rx_engine(jme); | |
2033 | } else { | |
2034 | jme->reg_rxcs &= ~RXCS_FIFOTHNP; | |
2035 | jme->reg_rxcs |= RXCS_FIFOTHNP_128QW; | |
2036 | jme_restart_rx_engine(jme); | |
2037 | } | |
2038 | ||
2039 | if (new_mtu > 1900) { | |
2040 | netdev->features &= ~(NETIF_F_HW_CSUM | | |
2041 | NETIF_F_TSO | | |
2042 | NETIF_F_TSO6); | |
2043 | } else { | |
2044 | if (test_bit(JME_FLAG_TXCSUM, &jme->flags)) | |
2045 | netdev->features |= NETIF_F_HW_CSUM; | |
2046 | if (test_bit(JME_FLAG_TSO, &jme->flags)) | |
2047 | netdev->features |= NETIF_F_TSO | NETIF_F_TSO6; | |
2048 | } | |
2049 | ||
2050 | netdev->mtu = new_mtu; | |
2051 | jme_reset_link(jme); | |
2052 | ||
2053 | return 0; | |
2054 | } | |
2055 | ||
2056 | static void | |
2057 | jme_tx_timeout(struct net_device *netdev) | |
2058 | { | |
2059 | struct jme_adapter *jme = netdev_priv(netdev); | |
2060 | ||
2061 | jme->phylink = 0; | |
2062 | jme_reset_phy_processor(jme); | |
2063 | if (test_bit(JME_FLAG_SSET, &jme->flags)) | |
2064 | jme_set_settings(netdev, &jme->old_ecmd); | |
2065 | ||
2066 | /* | |
2067 | * Force to Reset the link again | |
2068 | */ | |
2069 | jme_reset_link(jme); | |
2070 | } | |
2071 | ||
2072 | static void | |
2073 | jme_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp) | |
2074 | { | |
2075 | struct jme_adapter *jme = netdev_priv(netdev); | |
2076 | ||
2077 | jme->vlgrp = grp; | |
2078 | } | |
2079 | ||
2080 | static void | |
2081 | jme_get_drvinfo(struct net_device *netdev, | |
2082 | struct ethtool_drvinfo *info) | |
2083 | { | |
2084 | struct jme_adapter *jme = netdev_priv(netdev); | |
2085 | ||
2086 | strcpy(info->driver, DRV_NAME); | |
2087 | strcpy(info->version, DRV_VERSION); | |
2088 | strcpy(info->bus_info, pci_name(jme->pdev)); | |
2089 | } | |
2090 | ||
2091 | static int | |
2092 | jme_get_regs_len(struct net_device *netdev) | |
2093 | { | |
2094 | return JME_REG_LEN; | |
2095 | } | |
2096 | ||
2097 | static void | |
2098 | mmapio_memcpy(struct jme_adapter *jme, u32 *p, u32 reg, int len) | |
2099 | { | |
2100 | int i; | |
2101 | ||
2102 | for (i = 0 ; i < len ; i += 4) | |
2103 | p[i >> 2] = jread32(jme, reg + i); | |
2104 | } | |
2105 | ||
2106 | static void | |
2107 | mdio_memcpy(struct jme_adapter *jme, u32 *p, int reg_nr) | |
2108 | { | |
2109 | int i; | |
2110 | u16 *p16 = (u16 *)p; | |
2111 | ||
2112 | for (i = 0 ; i < reg_nr ; ++i) | |
2113 | p16[i] = jme_mdio_read(jme->dev, jme->mii_if.phy_id, i); | |
2114 | } | |
2115 | ||
2116 | static void | |
2117 | jme_get_regs(struct net_device *netdev, struct ethtool_regs *regs, void *p) | |
2118 | { | |
2119 | struct jme_adapter *jme = netdev_priv(netdev); | |
2120 | u32 *p32 = (u32 *)p; | |
2121 | ||
2122 | memset(p, 0xFF, JME_REG_LEN); | |
2123 | ||
2124 | regs->version = 1; | |
2125 | mmapio_memcpy(jme, p32, JME_MAC, JME_MAC_LEN); | |
2126 | ||
2127 | p32 += 0x100 >> 2; | |
2128 | mmapio_memcpy(jme, p32, JME_PHY, JME_PHY_LEN); | |
2129 | ||
2130 | p32 += 0x100 >> 2; | |
2131 | mmapio_memcpy(jme, p32, JME_MISC, JME_MISC_LEN); | |
2132 | ||
2133 | p32 += 0x100 >> 2; | |
2134 | mmapio_memcpy(jme, p32, JME_RSS, JME_RSS_LEN); | |
2135 | ||
2136 | p32 += 0x100 >> 2; | |
2137 | mdio_memcpy(jme, p32, JME_PHY_REG_NR); | |
2138 | } | |
2139 | ||
2140 | static int | |
2141 | jme_get_coalesce(struct net_device *netdev, struct ethtool_coalesce *ecmd) | |
2142 | { | |
2143 | struct jme_adapter *jme = netdev_priv(netdev); | |
2144 | ||
2145 | ecmd->tx_coalesce_usecs = PCC_TX_TO; | |
2146 | ecmd->tx_max_coalesced_frames = PCC_TX_CNT; | |
2147 | ||
2148 | if (test_bit(JME_FLAG_POLL, &jme->flags)) { | |
2149 | ecmd->use_adaptive_rx_coalesce = false; | |
2150 | ecmd->rx_coalesce_usecs = 0; | |
2151 | ecmd->rx_max_coalesced_frames = 0; | |
2152 | return 0; | |
2153 | } | |
2154 | ||
2155 | ecmd->use_adaptive_rx_coalesce = true; | |
2156 | ||
2157 | switch (jme->dpi.cur) { | |
2158 | case PCC_P1: | |
2159 | ecmd->rx_coalesce_usecs = PCC_P1_TO; | |
2160 | ecmd->rx_max_coalesced_frames = PCC_P1_CNT; | |
2161 | break; | |
2162 | case PCC_P2: | |
2163 | ecmd->rx_coalesce_usecs = PCC_P2_TO; | |
2164 | ecmd->rx_max_coalesced_frames = PCC_P2_CNT; | |
2165 | break; | |
2166 | case PCC_P3: | |
2167 | ecmd->rx_coalesce_usecs = PCC_P3_TO; | |
2168 | ecmd->rx_max_coalesced_frames = PCC_P3_CNT; | |
2169 | break; | |
2170 | default: | |
2171 | break; | |
2172 | } | |
2173 | ||
2174 | return 0; | |
2175 | } | |
2176 | ||
2177 | static int | |
2178 | jme_set_coalesce(struct net_device *netdev, struct ethtool_coalesce *ecmd) | |
2179 | { | |
2180 | struct jme_adapter *jme = netdev_priv(netdev); | |
2181 | struct dynpcc_info *dpi = &(jme->dpi); | |
2182 | ||
2183 | if (netif_running(netdev)) | |
2184 | return -EBUSY; | |
2185 | ||
2186 | if (ecmd->use_adaptive_rx_coalesce | |
2187 | && test_bit(JME_FLAG_POLL, &jme->flags)) { | |
2188 | clear_bit(JME_FLAG_POLL, &jme->flags); | |
2189 | jme->jme_rx = netif_rx; | |
2190 | jme->jme_vlan_rx = vlan_hwaccel_rx; | |
2191 | dpi->cur = PCC_P1; | |
2192 | dpi->attempt = PCC_P1; | |
2193 | dpi->cnt = 0; | |
2194 | jme_set_rx_pcc(jme, PCC_P1); | |
2195 | jme_interrupt_mode(jme); | |
2196 | } else if (!(ecmd->use_adaptive_rx_coalesce) | |
2197 | && !(test_bit(JME_FLAG_POLL, &jme->flags))) { | |
2198 | set_bit(JME_FLAG_POLL, &jme->flags); | |
2199 | jme->jme_rx = netif_receive_skb; | |
2200 | jme->jme_vlan_rx = vlan_hwaccel_receive_skb; | |
2201 | jme_interrupt_mode(jme); | |
2202 | } | |
2203 | ||
2204 | return 0; | |
2205 | } | |
2206 | ||
2207 | static void | |
2208 | jme_get_pauseparam(struct net_device *netdev, | |
2209 | struct ethtool_pauseparam *ecmd) | |
2210 | { | |
2211 | struct jme_adapter *jme = netdev_priv(netdev); | |
2212 | u32 val; | |
2213 | ||
2214 | ecmd->tx_pause = (jme->reg_txpfc & TXPFC_PF_EN) != 0; | |
2215 | ecmd->rx_pause = (jme->reg_rxmcs & RXMCS_FLOWCTRL) != 0; | |
2216 | ||
2217 | spin_lock_bh(&jme->phy_lock); | |
2218 | val = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_ADVERTISE); | |
2219 | spin_unlock_bh(&jme->phy_lock); | |
2220 | ||
2221 | ecmd->autoneg = | |
2222 | (val & (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM)) != 0; | |
2223 | } | |
2224 | ||
2225 | static int | |
2226 | jme_set_pauseparam(struct net_device *netdev, | |
2227 | struct ethtool_pauseparam *ecmd) | |
2228 | { | |
2229 | struct jme_adapter *jme = netdev_priv(netdev); | |
2230 | u32 val; | |
2231 | ||
2232 | if (((jme->reg_txpfc & TXPFC_PF_EN) != 0) ^ | |
2233 | (ecmd->tx_pause != 0)) { | |
2234 | ||
2235 | if (ecmd->tx_pause) | |
2236 | jme->reg_txpfc |= TXPFC_PF_EN; | |
2237 | else | |
2238 | jme->reg_txpfc &= ~TXPFC_PF_EN; | |
2239 | ||
2240 | jwrite32(jme, JME_TXPFC, jme->reg_txpfc); | |
2241 | } | |
2242 | ||
2243 | spin_lock_bh(&jme->rxmcs_lock); | |
2244 | if (((jme->reg_rxmcs & RXMCS_FLOWCTRL) != 0) ^ | |
2245 | (ecmd->rx_pause != 0)) { | |
2246 | ||
2247 | if (ecmd->rx_pause) | |
2248 | jme->reg_rxmcs |= RXMCS_FLOWCTRL; | |
2249 | else | |
2250 | jme->reg_rxmcs &= ~RXMCS_FLOWCTRL; | |
2251 | ||
2252 | jwrite32(jme, JME_RXMCS, jme->reg_rxmcs); | |
2253 | } | |
2254 | spin_unlock_bh(&jme->rxmcs_lock); | |
2255 | ||
2256 | spin_lock_bh(&jme->phy_lock); | |
2257 | val = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_ADVERTISE); | |
2258 | if (((val & (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM)) != 0) ^ | |
2259 | (ecmd->autoneg != 0)) { | |
2260 | ||
2261 | if (ecmd->autoneg) | |
2262 | val |= (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM); | |
2263 | else | |
2264 | val &= ~(ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM); | |
2265 | ||
2266 | jme_mdio_write(jme->dev, jme->mii_if.phy_id, | |
2267 | MII_ADVERTISE, val); | |
2268 | } | |
2269 | spin_unlock_bh(&jme->phy_lock); | |
2270 | ||
2271 | return 0; | |
2272 | } | |
2273 | ||
2274 | static void | |
2275 | jme_get_wol(struct net_device *netdev, | |
2276 | struct ethtool_wolinfo *wol) | |
2277 | { | |
2278 | struct jme_adapter *jme = netdev_priv(netdev); | |
2279 | ||
2280 | wol->supported = WAKE_MAGIC | WAKE_PHY; | |
2281 | ||
2282 | wol->wolopts = 0; | |
2283 | ||
2284 | if (jme->reg_pmcs & (PMCS_LFEN | PMCS_LREN)) | |
2285 | wol->wolopts |= WAKE_PHY; | |
2286 | ||
2287 | if (jme->reg_pmcs & PMCS_MFEN) | |
2288 | wol->wolopts |= WAKE_MAGIC; | |
2289 | ||
2290 | } | |
2291 | ||
2292 | static int | |
2293 | jme_set_wol(struct net_device *netdev, | |
2294 | struct ethtool_wolinfo *wol) | |
2295 | { | |
2296 | struct jme_adapter *jme = netdev_priv(netdev); | |
2297 | ||
2298 | if (wol->wolopts & (WAKE_MAGICSECURE | | |
2299 | WAKE_UCAST | | |
2300 | WAKE_MCAST | | |
2301 | WAKE_BCAST | | |
2302 | WAKE_ARP)) | |
2303 | return -EOPNOTSUPP; | |
2304 | ||
2305 | jme->reg_pmcs = 0; | |
2306 | ||
2307 | if (wol->wolopts & WAKE_PHY) | |
2308 | jme->reg_pmcs |= PMCS_LFEN | PMCS_LREN; | |
2309 | ||
2310 | if (wol->wolopts & WAKE_MAGIC) | |
2311 | jme->reg_pmcs |= PMCS_MFEN; | |
2312 | ||
2313 | jwrite32(jme, JME_PMCS, jme->reg_pmcs); | |
2314 | ||
2315 | return 0; | |
2316 | } | |
2317 | ||
2318 | static int | |
2319 | jme_get_settings(struct net_device *netdev, | |
2320 | struct ethtool_cmd *ecmd) | |
2321 | { | |
2322 | struct jme_adapter *jme = netdev_priv(netdev); | |
2323 | int rc; | |
2324 | ||
2325 | spin_lock_bh(&jme->phy_lock); | |
2326 | rc = mii_ethtool_gset(&(jme->mii_if), ecmd); | |
2327 | spin_unlock_bh(&jme->phy_lock); | |
2328 | return rc; | |
2329 | } | |
2330 | ||
2331 | static int | |
2332 | jme_set_settings(struct net_device *netdev, | |
2333 | struct ethtool_cmd *ecmd) | |
2334 | { | |
2335 | struct jme_adapter *jme = netdev_priv(netdev); | |
2336 | int rc, fdc = 0; | |
2337 | ||
2338 | if (ecmd->speed == SPEED_1000 && ecmd->autoneg != AUTONEG_ENABLE) | |
2339 | return -EINVAL; | |
2340 | ||
2341 | if (jme->mii_if.force_media && | |
2342 | ecmd->autoneg != AUTONEG_ENABLE && | |
2343 | (jme->mii_if.full_duplex != ecmd->duplex)) | |
2344 | fdc = 1; | |
2345 | ||
2346 | spin_lock_bh(&jme->phy_lock); | |
2347 | rc = mii_ethtool_sset(&(jme->mii_if), ecmd); | |
2348 | spin_unlock_bh(&jme->phy_lock); | |
2349 | ||
2350 | if (!rc && fdc) | |
2351 | jme_reset_link(jme); | |
2352 | ||
2353 | if (!rc) { | |
2354 | set_bit(JME_FLAG_SSET, &jme->flags); | |
2355 | jme->old_ecmd = *ecmd; | |
2356 | } | |
2357 | ||
2358 | return rc; | |
2359 | } | |
2360 | ||
2361 | static u32 | |
2362 | jme_get_link(struct net_device *netdev) | |
2363 | { | |
2364 | struct jme_adapter *jme = netdev_priv(netdev); | |
2365 | return jread32(jme, JME_PHY_LINK) & PHY_LINK_UP; | |
2366 | } | |
2367 | ||
2368 | static u32 | |
2369 | jme_get_msglevel(struct net_device *netdev) | |
2370 | { | |
2371 | struct jme_adapter *jme = netdev_priv(netdev); | |
2372 | return jme->msg_enable; | |
2373 | } | |
2374 | ||
2375 | static void | |
2376 | jme_set_msglevel(struct net_device *netdev, u32 value) | |
2377 | { | |
2378 | struct jme_adapter *jme = netdev_priv(netdev); | |
2379 | jme->msg_enable = value; | |
2380 | } | |
2381 | ||
2382 | static u32 | |
2383 | jme_get_rx_csum(struct net_device *netdev) | |
2384 | { | |
2385 | struct jme_adapter *jme = netdev_priv(netdev); | |
2386 | return jme->reg_rxmcs & RXMCS_CHECKSUM; | |
2387 | } | |
2388 | ||
2389 | static int | |
2390 | jme_set_rx_csum(struct net_device *netdev, u32 on) | |
2391 | { | |
2392 | struct jme_adapter *jme = netdev_priv(netdev); | |
2393 | ||
2394 | spin_lock_bh(&jme->rxmcs_lock); | |
2395 | if (on) | |
2396 | jme->reg_rxmcs |= RXMCS_CHECKSUM; | |
2397 | else | |
2398 | jme->reg_rxmcs &= ~RXMCS_CHECKSUM; | |
2399 | jwrite32(jme, JME_RXMCS, jme->reg_rxmcs); | |
2400 | spin_unlock_bh(&jme->rxmcs_lock); | |
2401 | ||
2402 | return 0; | |
2403 | } | |
2404 | ||
2405 | static int | |
2406 | jme_set_tx_csum(struct net_device *netdev, u32 on) | |
2407 | { | |
2408 | struct jme_adapter *jme = netdev_priv(netdev); | |
2409 | ||
2410 | if (on) { | |
2411 | set_bit(JME_FLAG_TXCSUM, &jme->flags); | |
2412 | if (netdev->mtu <= 1900) | |
2413 | netdev->features |= NETIF_F_HW_CSUM; | |
2414 | } else { | |
2415 | clear_bit(JME_FLAG_TXCSUM, &jme->flags); | |
2416 | netdev->features &= ~NETIF_F_HW_CSUM; | |
2417 | } | |
2418 | ||
2419 | return 0; | |
2420 | } | |
2421 | ||
2422 | static int | |
2423 | jme_set_tso(struct net_device *netdev, u32 on) | |
2424 | { | |
2425 | struct jme_adapter *jme = netdev_priv(netdev); | |
2426 | ||
2427 | if (on) { | |
2428 | set_bit(JME_FLAG_TSO, &jme->flags); | |
2429 | if (netdev->mtu <= 1900) | |
2430 | netdev->features |= NETIF_F_TSO | NETIF_F_TSO6; | |
2431 | } else { | |
2432 | clear_bit(JME_FLAG_TSO, &jme->flags); | |
2433 | netdev->features &= ~(NETIF_F_TSO | NETIF_F_TSO6); | |
2434 | } | |
2435 | ||
2436 | return 0; | |
2437 | } | |
2438 | ||
2439 | static int | |
2440 | jme_nway_reset(struct net_device *netdev) | |
2441 | { | |
2442 | struct jme_adapter *jme = netdev_priv(netdev); | |
2443 | jme_restart_an(jme); | |
2444 | return 0; | |
2445 | } | |
2446 | ||
2447 | static u8 | |
2448 | jme_smb_read(struct jme_adapter *jme, unsigned int addr) | |
2449 | { | |
2450 | u32 val; | |
2451 | int to; | |
2452 | ||
2453 | val = jread32(jme, JME_SMBCSR); | |
2454 | to = JME_SMB_BUSY_TIMEOUT; | |
2455 | while ((val & SMBCSR_BUSY) && --to) { | |
2456 | msleep(1); | |
2457 | val = jread32(jme, JME_SMBCSR); | |
2458 | } | |
2459 | if (!to) { | |
2460 | msg_hw(jme, "SMB Bus Busy.\n"); | |
2461 | return 0xFF; | |
2462 | } | |
2463 | ||
2464 | jwrite32(jme, JME_SMBINTF, | |
2465 | ((addr << SMBINTF_HWADDR_SHIFT) & SMBINTF_HWADDR) | | |
2466 | SMBINTF_HWRWN_READ | | |
2467 | SMBINTF_HWCMD); | |
2468 | ||
2469 | val = jread32(jme, JME_SMBINTF); | |
2470 | to = JME_SMB_BUSY_TIMEOUT; | |
2471 | while ((val & SMBINTF_HWCMD) && --to) { | |
2472 | msleep(1); | |
2473 | val = jread32(jme, JME_SMBINTF); | |
2474 | } | |
2475 | if (!to) { | |
2476 | msg_hw(jme, "SMB Bus Busy.\n"); | |
2477 | return 0xFF; | |
2478 | } | |
2479 | ||
2480 | return (val & SMBINTF_HWDATR) >> SMBINTF_HWDATR_SHIFT; | |
2481 | } | |
2482 | ||
2483 | static void | |
2484 | jme_smb_write(struct jme_adapter *jme, unsigned int addr, u8 data) | |
2485 | { | |
2486 | u32 val; | |
2487 | int to; | |
2488 | ||
2489 | val = jread32(jme, JME_SMBCSR); | |
2490 | to = JME_SMB_BUSY_TIMEOUT; | |
2491 | while ((val & SMBCSR_BUSY) && --to) { | |
2492 | msleep(1); | |
2493 | val = jread32(jme, JME_SMBCSR); | |
2494 | } | |
2495 | if (!to) { | |
2496 | msg_hw(jme, "SMB Bus Busy.\n"); | |
2497 | return; | |
2498 | } | |
2499 | ||
2500 | jwrite32(jme, JME_SMBINTF, | |
2501 | ((data << SMBINTF_HWDATW_SHIFT) & SMBINTF_HWDATW) | | |
2502 | ((addr << SMBINTF_HWADDR_SHIFT) & SMBINTF_HWADDR) | | |
2503 | SMBINTF_HWRWN_WRITE | | |
2504 | SMBINTF_HWCMD); | |
2505 | ||
2506 | val = jread32(jme, JME_SMBINTF); | |
2507 | to = JME_SMB_BUSY_TIMEOUT; | |
2508 | while ((val & SMBINTF_HWCMD) && --to) { | |
2509 | msleep(1); | |
2510 | val = jread32(jme, JME_SMBINTF); | |
2511 | } | |
2512 | if (!to) { | |
2513 | msg_hw(jme, "SMB Bus Busy.\n"); | |
2514 | return; | |
2515 | } | |
2516 | ||
2517 | mdelay(2); | |
2518 | } | |
2519 | ||
2520 | static int | |
2521 | jme_get_eeprom_len(struct net_device *netdev) | |
2522 | { | |
2523 | struct jme_adapter *jme = netdev_priv(netdev); | |
2524 | u32 val; | |
2525 | val = jread32(jme, JME_SMBCSR); | |
2526 | return (val & SMBCSR_EEPROMD) ? JME_SMB_LEN : 0; | |
2527 | } | |
2528 | ||
2529 | static int | |
2530 | jme_get_eeprom(struct net_device *netdev, | |
2531 | struct ethtool_eeprom *eeprom, u8 *data) | |
2532 | { | |
2533 | struct jme_adapter *jme = netdev_priv(netdev); | |
2534 | int i, offset = eeprom->offset, len = eeprom->len; | |
2535 | ||
2536 | /* | |
2537 | * ethtool will check the boundary for us | |
2538 | */ | |
2539 | eeprom->magic = JME_EEPROM_MAGIC; | |
2540 | for (i = 0 ; i < len ; ++i) | |
2541 | data[i] = jme_smb_read(jme, i + offset); | |
2542 | ||
2543 | return 0; | |
2544 | } | |
2545 | ||
2546 | static int | |
2547 | jme_set_eeprom(struct net_device *netdev, | |
2548 | struct ethtool_eeprom *eeprom, u8 *data) | |
2549 | { | |
2550 | struct jme_adapter *jme = netdev_priv(netdev); | |
2551 | int i, offset = eeprom->offset, len = eeprom->len; | |
2552 | ||
2553 | if (eeprom->magic != JME_EEPROM_MAGIC) | |
2554 | return -EINVAL; | |
2555 | ||
2556 | /* | |
2557 | * ethtool will check the boundary for us | |
2558 | */ | |
2559 | for (i = 0 ; i < len ; ++i) | |
2560 | jme_smb_write(jme, i + offset, data[i]); | |
2561 | ||
2562 | return 0; | |
2563 | } | |
2564 | ||
2565 | static const struct ethtool_ops jme_ethtool_ops = { | |
2566 | .get_drvinfo = jme_get_drvinfo, | |
2567 | .get_regs_len = jme_get_regs_len, | |
2568 | .get_regs = jme_get_regs, | |
2569 | .get_coalesce = jme_get_coalesce, | |
2570 | .set_coalesce = jme_set_coalesce, | |
2571 | .get_pauseparam = jme_get_pauseparam, | |
2572 | .set_pauseparam = jme_set_pauseparam, | |
2573 | .get_wol = jme_get_wol, | |
2574 | .set_wol = jme_set_wol, | |
2575 | .get_settings = jme_get_settings, | |
2576 | .set_settings = jme_set_settings, | |
2577 | .get_link = jme_get_link, | |
2578 | .get_msglevel = jme_get_msglevel, | |
2579 | .set_msglevel = jme_set_msglevel, | |
2580 | .get_rx_csum = jme_get_rx_csum, | |
2581 | .set_rx_csum = jme_set_rx_csum, | |
2582 | .set_tx_csum = jme_set_tx_csum, | |
2583 | .set_tso = jme_set_tso, | |
2584 | .set_sg = ethtool_op_set_sg, | |
2585 | .nway_reset = jme_nway_reset, | |
2586 | .get_eeprom_len = jme_get_eeprom_len, | |
2587 | .get_eeprom = jme_get_eeprom, | |
2588 | .set_eeprom = jme_set_eeprom, | |
2589 | }; | |
2590 | ||
2591 | static int | |
2592 | jme_pci_dma64(struct pci_dev *pdev) | |
2593 | { | |
95252236 GFT |
2594 | if (!pci_set_dma_mask(pdev, DMA_32BIT_MASK)) |
2595 | if (!pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK)) | |
2596 | return 0; | |
2597 | ||
2598 | return -1; | |
2599 | } | |
2600 | ||
2601 | static inline void | |
2602 | jme_phy_init(struct jme_adapter *jme) | |
2603 | { | |
2604 | u16 reg26; | |
2605 | ||
2606 | reg26 = jme_mdio_read(jme->dev, jme->mii_if.phy_id, 26); | |
2607 | jme_mdio_write(jme->dev, jme->mii_if.phy_id, 26, reg26 | 0x1000); | |
2608 | } | |
2609 | ||
2610 | static inline void | |
2611 | jme_check_hw_ver(struct jme_adapter *jme) | |
2612 | { | |
2613 | u32 chipmode; | |
2614 | ||
2615 | chipmode = jread32(jme, JME_CHIPMODE); | |
2616 | ||
2617 | jme->fpgaver = (chipmode & CM_FPGAVER_MASK) >> CM_FPGAVER_SHIFT; | |
2618 | jme->chiprev = (chipmode & CM_CHIPREV_MASK) >> CM_CHIPREV_SHIFT; | |
2619 | } | |
2620 | ||
e48714ba SH |
2621 | static const struct net_device_ops jme_netdev_ops = { |
2622 | .ndo_open = jme_open, | |
2623 | .ndo_stop = jme_close, | |
2624 | .ndo_validate_addr = eth_validate_addr, | |
2625 | .ndo_start_xmit = jme_start_xmit, | |
2626 | .ndo_set_mac_address = jme_set_macaddr, | |
2627 | .ndo_set_multicast_list = jme_set_multi, | |
2628 | .ndo_change_mtu = jme_change_mtu, | |
2629 | .ndo_tx_timeout = jme_tx_timeout, | |
2630 | .ndo_vlan_rx_register = jme_vlan_rx_register, | |
2631 | }; | |
2632 | ||
95252236 GFT |
2633 | static int __devinit |
2634 | jme_init_one(struct pci_dev *pdev, | |
2635 | const struct pci_device_id *ent) | |
2636 | { | |
2637 | int rc = 0, using_dac, i; | |
2638 | struct net_device *netdev; | |
2639 | struct jme_adapter *jme; | |
2640 | u16 bmcr, bmsr; | |
2641 | u32 apmc; | |
2642 | ||
2643 | /* | |
2644 | * set up PCI device basics | |
2645 | */ | |
2646 | rc = pci_enable_device(pdev); | |
2647 | if (rc) { | |
2648 | jeprintk(pdev, "Cannot enable PCI device.\n"); | |
2649 | goto err_out; | |
2650 | } | |
2651 | ||
2652 | using_dac = jme_pci_dma64(pdev); | |
2653 | if (using_dac < 0) { | |
2654 | jeprintk(pdev, "Cannot set PCI DMA Mask.\n"); | |
2655 | rc = -EIO; | |
2656 | goto err_out_disable_pdev; | |
2657 | } | |
2658 | ||
2659 | if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) { | |
2660 | jeprintk(pdev, "No PCI resource region found.\n"); | |
2661 | rc = -ENOMEM; | |
2662 | goto err_out_disable_pdev; | |
2663 | } | |
2664 | ||
2665 | rc = pci_request_regions(pdev, DRV_NAME); | |
2666 | if (rc) { | |
2667 | jeprintk(pdev, "Cannot obtain PCI resource region.\n"); | |
2668 | goto err_out_disable_pdev; | |
2669 | } | |
2670 | ||
2671 | pci_set_master(pdev); | |
2672 | ||
2673 | /* | |
2674 | * alloc and init net device | |
2675 | */ | |
2676 | netdev = alloc_etherdev(sizeof(*jme)); | |
2677 | if (!netdev) { | |
2678 | jeprintk(pdev, "Cannot allocate netdev structure.\n"); | |
2679 | rc = -ENOMEM; | |
2680 | goto err_out_release_regions; | |
2681 | } | |
e48714ba | 2682 | netdev->netdev_ops = &jme_netdev_ops; |
95252236 | 2683 | netdev->ethtool_ops = &jme_ethtool_ops; |
95252236 | 2684 | netdev->watchdog_timeo = TX_TIMEOUT; |
95252236 GFT |
2685 | netdev->features = NETIF_F_HW_CSUM | |
2686 | NETIF_F_SG | | |
2687 | NETIF_F_TSO | | |
2688 | NETIF_F_TSO6 | | |
2689 | NETIF_F_HW_VLAN_TX | | |
2690 | NETIF_F_HW_VLAN_RX; | |
2691 | if (using_dac) | |
2692 | netdev->features |= NETIF_F_HIGHDMA; | |
2693 | ||
2694 | SET_NETDEV_DEV(netdev, &pdev->dev); | |
2695 | pci_set_drvdata(pdev, netdev); | |
2696 | ||
2697 | /* | |
2698 | * init adapter info | |
2699 | */ | |
2700 | jme = netdev_priv(netdev); | |
2701 | jme->pdev = pdev; | |
2702 | jme->dev = netdev; | |
2703 | jme->jme_rx = netif_rx; | |
2704 | jme->jme_vlan_rx = vlan_hwaccel_rx; | |
2705 | jme->old_mtu = netdev->mtu = 1500; | |
2706 | jme->phylink = 0; | |
2707 | jme->tx_ring_size = 1 << 10; | |
2708 | jme->tx_ring_mask = jme->tx_ring_size - 1; | |
2709 | jme->tx_wake_threshold = 1 << 9; | |
2710 | jme->rx_ring_size = 1 << 9; | |
2711 | jme->rx_ring_mask = jme->rx_ring_size - 1; | |
2712 | jme->msg_enable = JME_DEF_MSG_ENABLE; | |
2713 | jme->regs = ioremap(pci_resource_start(pdev, 0), | |
2714 | pci_resource_len(pdev, 0)); | |
2715 | if (!(jme->regs)) { | |
2716 | jeprintk(pdev, "Mapping PCI resource region error.\n"); | |
2717 | rc = -ENOMEM; | |
2718 | goto err_out_free_netdev; | |
2719 | } | |
2720 | jme->shadow_regs = pci_alloc_consistent(pdev, | |
2721 | sizeof(u32) * SHADOW_REG_NR, | |
2722 | &(jme->shadow_dma)); | |
2723 | if (!(jme->shadow_regs)) { | |
2724 | jeprintk(pdev, "Allocating shadow register mapping error.\n"); | |
2725 | rc = -ENOMEM; | |
2726 | goto err_out_unmap; | |
2727 | } | |
2728 | ||
2729 | if (no_pseudohp) { | |
2730 | apmc = jread32(jme, JME_APMC) & ~JME_APMC_PSEUDO_HP_EN; | |
2731 | jwrite32(jme, JME_APMC, apmc); | |
2732 | } else if (force_pseudohp) { | |
2733 | apmc = jread32(jme, JME_APMC) | JME_APMC_PSEUDO_HP_EN; | |
2734 | jwrite32(jme, JME_APMC, apmc); | |
2735 | } | |
2736 | ||
2737 | NETIF_NAPI_SET(netdev, &jme->napi, jme_poll, jme->rx_ring_size >> 2) | |
2738 | ||
2739 | spin_lock_init(&jme->phy_lock); | |
2740 | spin_lock_init(&jme->macaddr_lock); | |
2741 | spin_lock_init(&jme->rxmcs_lock); | |
2742 | ||
2743 | atomic_set(&jme->link_changing, 1); | |
2744 | atomic_set(&jme->rx_cleaning, 1); | |
2745 | atomic_set(&jme->tx_cleaning, 1); | |
2746 | atomic_set(&jme->rx_empty, 1); | |
2747 | ||
2748 | tasklet_init(&jme->pcc_task, | |
2749 | &jme_pcc_tasklet, | |
2750 | (unsigned long) jme); | |
2751 | tasklet_init(&jme->linkch_task, | |
2752 | &jme_link_change_tasklet, | |
2753 | (unsigned long) jme); | |
2754 | tasklet_init(&jme->txclean_task, | |
2755 | &jme_tx_clean_tasklet, | |
2756 | (unsigned long) jme); | |
2757 | tasklet_init(&jme->rxclean_task, | |
2758 | &jme_rx_clean_tasklet, | |
2759 | (unsigned long) jme); | |
2760 | tasklet_init(&jme->rxempty_task, | |
2761 | &jme_rx_empty_tasklet, | |
2762 | (unsigned long) jme); | |
2763 | tasklet_disable_nosync(&jme->txclean_task); | |
2764 | tasklet_disable_nosync(&jme->rxclean_task); | |
2765 | tasklet_disable_nosync(&jme->rxempty_task); | |
2766 | jme->dpi.cur = PCC_P1; | |
2767 | ||
2768 | jme->reg_ghc = 0; | |
2769 | jme->reg_rxcs = RXCS_DEFAULT; | |
2770 | jme->reg_rxmcs = RXMCS_DEFAULT; | |
2771 | jme->reg_txpfc = 0; | |
2772 | jme->reg_pmcs = PMCS_MFEN; | |
2773 | set_bit(JME_FLAG_TXCSUM, &jme->flags); | |
2774 | set_bit(JME_FLAG_TSO, &jme->flags); | |
2775 | ||
2776 | /* | |
2777 | * Get Max Read Req Size from PCI Config Space | |
2778 | */ | |
2779 | pci_read_config_byte(pdev, PCI_DCSR_MRRS, &jme->mrrs); | |
2780 | jme->mrrs &= PCI_DCSR_MRRS_MASK; | |
2781 | switch (jme->mrrs) { | |
2782 | case MRRS_128B: | |
2783 | jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_128B; | |
2784 | break; | |
2785 | case MRRS_256B: | |
2786 | jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_256B; | |
2787 | break; | |
2788 | default: | |
2789 | jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_512B; | |
2790 | break; | |
2791 | }; | |
2792 | ||
2793 | /* | |
2794 | * Must check before reset_mac_processor | |
2795 | */ | |
2796 | jme_check_hw_ver(jme); | |
2797 | jme->mii_if.dev = netdev; | |
2798 | if (jme->fpgaver) { | |
2799 | jme->mii_if.phy_id = 0; | |
2800 | for (i = 1 ; i < 32 ; ++i) { | |
2801 | bmcr = jme_mdio_read(netdev, i, MII_BMCR); | |
2802 | bmsr = jme_mdio_read(netdev, i, MII_BMSR); | |
2803 | if (bmcr != 0xFFFFU && (bmcr != 0 || bmsr != 0)) { | |
2804 | jme->mii_if.phy_id = i; | |
2805 | break; | |
2806 | } | |
2807 | } | |
2808 | ||
2809 | if (!jme->mii_if.phy_id) { | |
2810 | rc = -EIO; | |
2811 | jeprintk(pdev, "Can not find phy_id.\n"); | |
2812 | goto err_out_free_shadow; | |
2813 | } | |
2814 | ||
2815 | jme->reg_ghc |= GHC_LINK_POLL; | |
2816 | } else { | |
2817 | jme->mii_if.phy_id = 1; | |
2818 | } | |
2819 | if (pdev->device == PCI_DEVICE_ID_JMICRON_JMC250) | |
2820 | jme->mii_if.supports_gmii = true; | |
2821 | else | |
2822 | jme->mii_if.supports_gmii = false; | |
2823 | jme->mii_if.mdio_read = jme_mdio_read; | |
2824 | jme->mii_if.mdio_write = jme_mdio_write; | |
2825 | ||
2826 | jme_clear_pm(jme); | |
2827 | jme_set_phyfifoa(jme); | |
2828 | pci_read_config_byte(pdev, PCI_REVISION_ID, &jme->rev); | |
2829 | if (!jme->fpgaver) | |
2830 | jme_phy_init(jme); | |
2831 | jme_phy_off(jme); | |
2832 | ||
2833 | /* | |
2834 | * Reset MAC processor and reload EEPROM for MAC Address | |
2835 | */ | |
2836 | jme_reset_mac_processor(jme); | |
2837 | rc = jme_reload_eeprom(jme); | |
2838 | if (rc) { | |
2839 | jeprintk(pdev, | |
2840 | "Reload eeprom for reading MAC Address error.\n"); | |
2841 | goto err_out_free_shadow; | |
2842 | } | |
2843 | jme_load_macaddr(netdev); | |
2844 | ||
2845 | /* | |
2846 | * Tell stack that we are not ready to work until open() | |
2847 | */ | |
2848 | netif_carrier_off(netdev); | |
2849 | netif_stop_queue(netdev); | |
2850 | ||
2851 | /* | |
2852 | * Register netdev | |
2853 | */ | |
2854 | rc = register_netdev(netdev); | |
2855 | if (rc) { | |
2856 | jeprintk(pdev, "Cannot register net device.\n"); | |
2857 | goto err_out_free_shadow; | |
2858 | } | |
2859 | ||
7c510e4b | 2860 | msg_probe(jme, "JMC250 gigabit%s ver:%x rev:%x macaddr:%pM\n", |
95252236 GFT |
2861 | (jme->fpgaver != 0) ? " (FPGA)" : "", |
2862 | (jme->fpgaver != 0) ? jme->fpgaver : jme->chiprev, | |
7c510e4b | 2863 | jme->rev, netdev->dev_addr); |
95252236 GFT |
2864 | |
2865 | return 0; | |
2866 | ||
2867 | err_out_free_shadow: | |
2868 | pci_free_consistent(pdev, | |
2869 | sizeof(u32) * SHADOW_REG_NR, | |
2870 | jme->shadow_regs, | |
2871 | jme->shadow_dma); | |
2872 | err_out_unmap: | |
2873 | iounmap(jme->regs); | |
2874 | err_out_free_netdev: | |
2875 | pci_set_drvdata(pdev, NULL); | |
2876 | free_netdev(netdev); | |
2877 | err_out_release_regions: | |
2878 | pci_release_regions(pdev); | |
2879 | err_out_disable_pdev: | |
2880 | pci_disable_device(pdev); | |
2881 | err_out: | |
2882 | return rc; | |
2883 | } | |
2884 | ||
2885 | static void __devexit | |
2886 | jme_remove_one(struct pci_dev *pdev) | |
2887 | { | |
2888 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2889 | struct jme_adapter *jme = netdev_priv(netdev); | |
2890 | ||
2891 | unregister_netdev(netdev); | |
2892 | pci_free_consistent(pdev, | |
2893 | sizeof(u32) * SHADOW_REG_NR, | |
2894 | jme->shadow_regs, | |
2895 | jme->shadow_dma); | |
2896 | iounmap(jme->regs); | |
2897 | pci_set_drvdata(pdev, NULL); | |
2898 | free_netdev(netdev); | |
2899 | pci_release_regions(pdev); | |
2900 | pci_disable_device(pdev); | |
2901 | ||
2902 | } | |
2903 | ||
724f8805 | 2904 | #ifdef CONFIG_PM |
95252236 GFT |
2905 | static int |
2906 | jme_suspend(struct pci_dev *pdev, pm_message_t state) | |
2907 | { | |
2908 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2909 | struct jme_adapter *jme = netdev_priv(netdev); | |
2910 | ||
2911 | atomic_dec(&jme->link_changing); | |
2912 | ||
2913 | netif_device_detach(netdev); | |
2914 | netif_stop_queue(netdev); | |
2915 | jme_stop_irq(jme); | |
2916 | ||
2917 | tasklet_disable(&jme->txclean_task); | |
2918 | tasklet_disable(&jme->rxclean_task); | |
2919 | tasklet_disable(&jme->rxempty_task); | |
2920 | ||
2921 | jme_disable_shadow(jme); | |
2922 | ||
2923 | if (netif_carrier_ok(netdev)) { | |
2924 | if (test_bit(JME_FLAG_POLL, &jme->flags)) | |
2925 | jme_polling_mode(jme); | |
2926 | ||
2927 | jme_stop_pcc_timer(jme); | |
2928 | jme_reset_ghc_speed(jme); | |
2929 | jme_disable_rx_engine(jme); | |
2930 | jme_disable_tx_engine(jme); | |
2931 | jme_reset_mac_processor(jme); | |
2932 | jme_free_rx_resources(jme); | |
2933 | jme_free_tx_resources(jme); | |
2934 | netif_carrier_off(netdev); | |
2935 | jme->phylink = 0; | |
2936 | } | |
2937 | ||
2938 | tasklet_enable(&jme->txclean_task); | |
2939 | tasklet_hi_enable(&jme->rxclean_task); | |
2940 | tasklet_hi_enable(&jme->rxempty_task); | |
2941 | ||
2942 | pci_save_state(pdev); | |
2943 | if (jme->reg_pmcs) { | |
2944 | jme_set_100m_half(jme); | |
2945 | ||
2946 | if (jme->reg_pmcs & (PMCS_LFEN | PMCS_LREN)) | |
2947 | jme_wait_link(jme); | |
2948 | ||
2949 | jwrite32(jme, JME_PMCS, jme->reg_pmcs); | |
2950 | ||
2951 | pci_enable_wake(pdev, PCI_D3cold, true); | |
2952 | } else { | |
2953 | jme_phy_off(jme); | |
2954 | } | |
2955 | pci_set_power_state(pdev, PCI_D3cold); | |
2956 | ||
2957 | return 0; | |
2958 | } | |
2959 | ||
2960 | static int | |
2961 | jme_resume(struct pci_dev *pdev) | |
2962 | { | |
2963 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2964 | struct jme_adapter *jme = netdev_priv(netdev); | |
2965 | ||
2966 | jme_clear_pm(jme); | |
2967 | pci_restore_state(pdev); | |
2968 | ||
2969 | if (test_bit(JME_FLAG_SSET, &jme->flags)) | |
2970 | jme_set_settings(netdev, &jme->old_ecmd); | |
2971 | else | |
2972 | jme_reset_phy_processor(jme); | |
2973 | ||
2974 | jme_enable_shadow(jme); | |
2975 | jme_start_irq(jme); | |
2976 | netif_device_attach(netdev); | |
2977 | ||
2978 | atomic_inc(&jme->link_changing); | |
2979 | ||
2980 | jme_reset_link(jme); | |
2981 | ||
2982 | return 0; | |
2983 | } | |
724f8805 | 2984 | #endif |
95252236 GFT |
2985 | |
2986 | static struct pci_device_id jme_pci_tbl[] = { | |
2987 | { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMC250) }, | |
2988 | { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMC260) }, | |
2989 | { } | |
2990 | }; | |
2991 | ||
2992 | static struct pci_driver jme_driver = { | |
2993 | .name = DRV_NAME, | |
2994 | .id_table = jme_pci_tbl, | |
2995 | .probe = jme_init_one, | |
2996 | .remove = __devexit_p(jme_remove_one), | |
2997 | #ifdef CONFIG_PM | |
2998 | .suspend = jme_suspend, | |
2999 | .resume = jme_resume, | |
3000 | #endif /* CONFIG_PM */ | |
3001 | }; | |
3002 | ||
3003 | static int __init | |
3004 | jme_init_module(void) | |
3005 | { | |
3006 | printk(KERN_INFO PFX "JMicron JMC250 gigabit ethernet " | |
3007 | "driver version %s\n", DRV_VERSION); | |
3008 | return pci_register_driver(&jme_driver); | |
3009 | } | |
3010 | ||
3011 | static void __exit | |
3012 | jme_cleanup_module(void) | |
3013 | { | |
3014 | pci_unregister_driver(&jme_driver); | |
3015 | } | |
3016 | ||
3017 | module_init(jme_init_module); | |
3018 | module_exit(jme_cleanup_module); | |
3019 | ||
3020 | MODULE_AUTHOR("Guo-Fu Tseng <cooldavid@cooldavid.org>"); | |
3021 | MODULE_DESCRIPTION("JMicron JMC2x0 PCI Express Ethernet driver"); | |
3022 | MODULE_LICENSE("GPL"); | |
3023 | MODULE_VERSION(DRV_VERSION); | |
3024 | MODULE_DEVICE_TABLE(pci, jme_pci_tbl); | |
3025 |