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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> | |
5a0e3ad6 | 40 | #include <linux/slab.h> |
b7c6bfb7 | 41 | #include <net/ip6_checksum.h> |
95252236 GFT |
42 | #include "jme.h" |
43 | ||
44 | static int force_pseudohp = -1; | |
45 | static int no_pseudohp = -1; | |
46 | static int no_extplug = -1; | |
47 | module_param(force_pseudohp, int, 0); | |
48 | MODULE_PARM_DESC(force_pseudohp, | |
49 | "Enable pseudo hot-plug feature manually by driver instead of BIOS."); | |
50 | module_param(no_pseudohp, int, 0); | |
51 | MODULE_PARM_DESC(no_pseudohp, "Disable pseudo hot-plug feature."); | |
52 | module_param(no_extplug, int, 0); | |
53 | MODULE_PARM_DESC(no_extplug, | |
54 | "Do not use external plug signal for pseudo hot-plug."); | |
55 | ||
56 | static int | |
57 | jme_mdio_read(struct net_device *netdev, int phy, int reg) | |
58 | { | |
59 | struct jme_adapter *jme = netdev_priv(netdev); | |
60 | int i, val, again = (reg == MII_BMSR) ? 1 : 0; | |
61 | ||
62 | read_again: | |
63 | jwrite32(jme, JME_SMI, SMI_OP_REQ | | |
64 | smi_phy_addr(phy) | | |
65 | smi_reg_addr(reg)); | |
66 | ||
67 | wmb(); | |
68 | for (i = JME_PHY_TIMEOUT * 50 ; i > 0 ; --i) { | |
69 | udelay(20); | |
70 | val = jread32(jme, JME_SMI); | |
71 | if ((val & SMI_OP_REQ) == 0) | |
72 | break; | |
73 | } | |
74 | ||
75 | if (i == 0) { | |
76 | jeprintk(jme->pdev, "phy(%d) read timeout : %d\n", phy, reg); | |
77 | return 0; | |
78 | } | |
79 | ||
80 | if (again--) | |
81 | goto read_again; | |
82 | ||
83 | return (val & SMI_DATA_MASK) >> SMI_DATA_SHIFT; | |
84 | } | |
85 | ||
86 | static void | |
87 | jme_mdio_write(struct net_device *netdev, | |
88 | int phy, int reg, int val) | |
89 | { | |
90 | struct jme_adapter *jme = netdev_priv(netdev); | |
91 | int i; | |
92 | ||
93 | jwrite32(jme, JME_SMI, SMI_OP_WRITE | SMI_OP_REQ | | |
94 | ((val << SMI_DATA_SHIFT) & SMI_DATA_MASK) | | |
95 | smi_phy_addr(phy) | smi_reg_addr(reg)); | |
96 | ||
97 | wmb(); | |
98 | for (i = JME_PHY_TIMEOUT * 50 ; i > 0 ; --i) { | |
99 | udelay(20); | |
100 | if ((jread32(jme, JME_SMI) & SMI_OP_REQ) == 0) | |
101 | break; | |
102 | } | |
103 | ||
104 | if (i == 0) | |
105 | jeprintk(jme->pdev, "phy(%d) write timeout : %d\n", phy, reg); | |
95252236 GFT |
106 | } |
107 | ||
108 | static inline void | |
109 | jme_reset_phy_processor(struct jme_adapter *jme) | |
110 | { | |
111 | u32 val; | |
112 | ||
113 | jme_mdio_write(jme->dev, | |
114 | jme->mii_if.phy_id, | |
115 | MII_ADVERTISE, ADVERTISE_ALL | | |
116 | ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM); | |
117 | ||
118 | if (jme->pdev->device == PCI_DEVICE_ID_JMICRON_JMC250) | |
119 | jme_mdio_write(jme->dev, | |
120 | jme->mii_if.phy_id, | |
121 | MII_CTRL1000, | |
122 | ADVERTISE_1000FULL | ADVERTISE_1000HALF); | |
123 | ||
124 | val = jme_mdio_read(jme->dev, | |
125 | jme->mii_if.phy_id, | |
126 | MII_BMCR); | |
127 | ||
128 | jme_mdio_write(jme->dev, | |
129 | jme->mii_if.phy_id, | |
130 | MII_BMCR, val | BMCR_RESET); | |
95252236 GFT |
131 | } |
132 | ||
133 | static void | |
134 | jme_setup_wakeup_frame(struct jme_adapter *jme, | |
135 | u32 *mask, u32 crc, int fnr) | |
136 | { | |
137 | int i; | |
138 | ||
139 | /* | |
140 | * Setup CRC pattern | |
141 | */ | |
142 | jwrite32(jme, JME_WFOI, WFOI_CRC_SEL | (fnr & WFOI_FRAME_SEL)); | |
143 | wmb(); | |
144 | jwrite32(jme, JME_WFODP, crc); | |
145 | wmb(); | |
146 | ||
147 | /* | |
148 | * Setup Mask | |
149 | */ | |
150 | for (i = 0 ; i < WAKEUP_FRAME_MASK_DWNR ; ++i) { | |
151 | jwrite32(jme, JME_WFOI, | |
152 | ((i << WFOI_MASK_SHIFT) & WFOI_MASK_SEL) | | |
153 | (fnr & WFOI_FRAME_SEL)); | |
154 | wmb(); | |
155 | jwrite32(jme, JME_WFODP, mask[i]); | |
156 | wmb(); | |
157 | } | |
158 | } | |
159 | ||
160 | static inline void | |
161 | jme_reset_mac_processor(struct jme_adapter *jme) | |
162 | { | |
163 | u32 mask[WAKEUP_FRAME_MASK_DWNR] = {0, 0, 0, 0}; | |
164 | u32 crc = 0xCDCDCDCD; | |
165 | u32 gpreg0; | |
166 | int i; | |
167 | ||
168 | jwrite32(jme, JME_GHC, jme->reg_ghc | GHC_SWRST); | |
169 | udelay(2); | |
170 | jwrite32(jme, JME_GHC, jme->reg_ghc); | |
171 | ||
172 | jwrite32(jme, JME_RXDBA_LO, 0x00000000); | |
173 | jwrite32(jme, JME_RXDBA_HI, 0x00000000); | |
174 | jwrite32(jme, JME_RXQDC, 0x00000000); | |
175 | jwrite32(jme, JME_RXNDA, 0x00000000); | |
176 | jwrite32(jme, JME_TXDBA_LO, 0x00000000); | |
177 | jwrite32(jme, JME_TXDBA_HI, 0x00000000); | |
178 | jwrite32(jme, JME_TXQDC, 0x00000000); | |
179 | jwrite32(jme, JME_TXNDA, 0x00000000); | |
180 | ||
181 | jwrite32(jme, JME_RXMCHT_LO, 0x00000000); | |
182 | jwrite32(jme, JME_RXMCHT_HI, 0x00000000); | |
183 | for (i = 0 ; i < WAKEUP_FRAME_NR ; ++i) | |
184 | jme_setup_wakeup_frame(jme, mask, crc, i); | |
185 | if (jme->fpgaver) | |
186 | gpreg0 = GPREG0_DEFAULT | GPREG0_LNKINTPOLL; | |
187 | else | |
188 | gpreg0 = GPREG0_DEFAULT; | |
189 | jwrite32(jme, JME_GPREG0, gpreg0); | |
a821ebe5 | 190 | jwrite32(jme, JME_GPREG1, GPREG1_DEFAULT); |
95252236 GFT |
191 | } |
192 | ||
193 | static inline void | |
194 | jme_reset_ghc_speed(struct jme_adapter *jme) | |
195 | { | |
196 | jme->reg_ghc &= ~(GHC_SPEED_1000M | GHC_DPX); | |
197 | jwrite32(jme, JME_GHC, jme->reg_ghc); | |
198 | } | |
199 | ||
200 | static inline void | |
201 | jme_clear_pm(struct jme_adapter *jme) | |
202 | { | |
203 | jwrite32(jme, JME_PMCS, 0xFFFF0000 | jme->reg_pmcs); | |
204 | pci_set_power_state(jme->pdev, PCI_D0); | |
205 | pci_enable_wake(jme->pdev, PCI_D0, false); | |
206 | } | |
207 | ||
208 | static int | |
209 | jme_reload_eeprom(struct jme_adapter *jme) | |
210 | { | |
211 | u32 val; | |
212 | int i; | |
213 | ||
214 | val = jread32(jme, JME_SMBCSR); | |
215 | ||
216 | if (val & SMBCSR_EEPROMD) { | |
217 | val |= SMBCSR_CNACK; | |
218 | jwrite32(jme, JME_SMBCSR, val); | |
219 | val |= SMBCSR_RELOAD; | |
220 | jwrite32(jme, JME_SMBCSR, val); | |
221 | mdelay(12); | |
222 | ||
223 | for (i = JME_EEPROM_RELOAD_TIMEOUT; i > 0; --i) { | |
224 | mdelay(1); | |
225 | if ((jread32(jme, JME_SMBCSR) & SMBCSR_RELOAD) == 0) | |
226 | break; | |
227 | } | |
228 | ||
229 | if (i == 0) { | |
230 | jeprintk(jme->pdev, "eeprom reload timeout\n"); | |
231 | return -EIO; | |
232 | } | |
233 | } | |
234 | ||
235 | return 0; | |
236 | } | |
237 | ||
238 | static void | |
239 | jme_load_macaddr(struct net_device *netdev) | |
240 | { | |
241 | struct jme_adapter *jme = netdev_priv(netdev); | |
242 | unsigned char macaddr[6]; | |
243 | u32 val; | |
244 | ||
245 | spin_lock_bh(&jme->macaddr_lock); | |
246 | val = jread32(jme, JME_RXUMA_LO); | |
247 | macaddr[0] = (val >> 0) & 0xFF; | |
248 | macaddr[1] = (val >> 8) & 0xFF; | |
249 | macaddr[2] = (val >> 16) & 0xFF; | |
250 | macaddr[3] = (val >> 24) & 0xFF; | |
251 | val = jread32(jme, JME_RXUMA_HI); | |
252 | macaddr[4] = (val >> 0) & 0xFF; | |
253 | macaddr[5] = (val >> 8) & 0xFF; | |
254 | memcpy(netdev->dev_addr, macaddr, 6); | |
255 | spin_unlock_bh(&jme->macaddr_lock); | |
256 | } | |
257 | ||
258 | static inline void | |
259 | jme_set_rx_pcc(struct jme_adapter *jme, int p) | |
260 | { | |
261 | switch (p) { | |
262 | case PCC_OFF: | |
263 | jwrite32(jme, JME_PCCRX0, | |
264 | ((PCC_OFF_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) | | |
265 | ((PCC_OFF_CNT << PCCRX_SHIFT) & PCCRX_MASK)); | |
266 | break; | |
267 | case PCC_P1: | |
268 | jwrite32(jme, JME_PCCRX0, | |
269 | ((PCC_P1_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) | | |
270 | ((PCC_P1_CNT << PCCRX_SHIFT) & PCCRX_MASK)); | |
271 | break; | |
272 | case PCC_P2: | |
273 | jwrite32(jme, JME_PCCRX0, | |
274 | ((PCC_P2_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) | | |
275 | ((PCC_P2_CNT << PCCRX_SHIFT) & PCCRX_MASK)); | |
276 | break; | |
277 | case PCC_P3: | |
278 | jwrite32(jme, JME_PCCRX0, | |
279 | ((PCC_P3_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) | | |
280 | ((PCC_P3_CNT << PCCRX_SHIFT) & PCCRX_MASK)); | |
281 | break; | |
282 | default: | |
283 | break; | |
284 | } | |
285 | wmb(); | |
286 | ||
287 | if (!(test_bit(JME_FLAG_POLL, &jme->flags))) | |
f8502ce4 | 288 | netif_info(jme, rx_status, jme->dev, "Switched to PCC_P%d\n", p); |
95252236 GFT |
289 | } |
290 | ||
291 | static void | |
292 | jme_start_irq(struct jme_adapter *jme) | |
293 | { | |
294 | register struct dynpcc_info *dpi = &(jme->dpi); | |
295 | ||
296 | jme_set_rx_pcc(jme, PCC_P1); | |
297 | dpi->cur = PCC_P1; | |
298 | dpi->attempt = PCC_P1; | |
299 | dpi->cnt = 0; | |
300 | ||
301 | jwrite32(jme, JME_PCCTX, | |
302 | ((PCC_TX_TO << PCCTXTO_SHIFT) & PCCTXTO_MASK) | | |
303 | ((PCC_TX_CNT << PCCTX_SHIFT) & PCCTX_MASK) | | |
304 | PCCTXQ0_EN | |
305 | ); | |
306 | ||
307 | /* | |
308 | * Enable Interrupts | |
309 | */ | |
310 | jwrite32(jme, JME_IENS, INTR_ENABLE); | |
311 | } | |
312 | ||
313 | static inline void | |
314 | jme_stop_irq(struct jme_adapter *jme) | |
315 | { | |
316 | /* | |
317 | * Disable Interrupts | |
318 | */ | |
319 | jwrite32f(jme, JME_IENC, INTR_ENABLE); | |
320 | } | |
321 | ||
95252236 GFT |
322 | static u32 |
323 | jme_linkstat_from_phy(struct jme_adapter *jme) | |
324 | { | |
325 | u32 phylink, bmsr; | |
326 | ||
327 | phylink = jme_mdio_read(jme->dev, jme->mii_if.phy_id, 17); | |
328 | bmsr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMSR); | |
329 | if (bmsr & BMSR_ANCOMP) | |
330 | phylink |= PHY_LINK_AUTONEG_COMPLETE; | |
331 | ||
332 | return phylink; | |
333 | } | |
334 | ||
335 | static inline void | |
336 | jme_set_phyfifoa(struct jme_adapter *jme) | |
337 | { | |
338 | jme_mdio_write(jme->dev, jme->mii_if.phy_id, 27, 0x0004); | |
339 | } | |
340 | ||
341 | static inline void | |
342 | jme_set_phyfifob(struct jme_adapter *jme) | |
343 | { | |
344 | jme_mdio_write(jme->dev, jme->mii_if.phy_id, 27, 0x0000); | |
345 | } | |
346 | ||
347 | static int | |
348 | jme_check_link(struct net_device *netdev, int testonly) | |
349 | { | |
350 | struct jme_adapter *jme = netdev_priv(netdev); | |
a821ebe5 | 351 | u32 phylink, ghc, cnt = JME_SPDRSV_TIMEOUT, bmcr, gpreg1; |
95252236 GFT |
352 | char linkmsg[64]; |
353 | int rc = 0; | |
354 | ||
355 | linkmsg[0] = '\0'; | |
356 | ||
357 | if (jme->fpgaver) | |
358 | phylink = jme_linkstat_from_phy(jme); | |
359 | else | |
360 | phylink = jread32(jme, JME_PHY_LINK); | |
361 | ||
362 | if (phylink & PHY_LINK_UP) { | |
363 | if (!(phylink & PHY_LINK_AUTONEG_COMPLETE)) { | |
364 | /* | |
365 | * If we did not enable AN | |
366 | * Speed/Duplex Info should be obtained from SMI | |
367 | */ | |
368 | phylink = PHY_LINK_UP; | |
369 | ||
370 | bmcr = jme_mdio_read(jme->dev, | |
371 | jme->mii_if.phy_id, | |
372 | MII_BMCR); | |
373 | ||
374 | phylink |= ((bmcr & BMCR_SPEED1000) && | |
375 | (bmcr & BMCR_SPEED100) == 0) ? | |
376 | PHY_LINK_SPEED_1000M : | |
377 | (bmcr & BMCR_SPEED100) ? | |
378 | PHY_LINK_SPEED_100M : | |
379 | PHY_LINK_SPEED_10M; | |
380 | ||
381 | phylink |= (bmcr & BMCR_FULLDPLX) ? | |
382 | PHY_LINK_DUPLEX : 0; | |
383 | ||
384 | strcat(linkmsg, "Forced: "); | |
385 | } else { | |
386 | /* | |
387 | * Keep polling for speed/duplex resolve complete | |
388 | */ | |
389 | while (!(phylink & PHY_LINK_SPEEDDPU_RESOLVED) && | |
390 | --cnt) { | |
391 | ||
392 | udelay(1); | |
393 | ||
394 | if (jme->fpgaver) | |
395 | phylink = jme_linkstat_from_phy(jme); | |
396 | else | |
397 | phylink = jread32(jme, JME_PHY_LINK); | |
398 | } | |
399 | if (!cnt) | |
400 | jeprintk(jme->pdev, | |
401 | "Waiting speed resolve timeout.\n"); | |
402 | ||
403 | strcat(linkmsg, "ANed: "); | |
404 | } | |
405 | ||
406 | if (jme->phylink == phylink) { | |
407 | rc = 1; | |
408 | goto out; | |
409 | } | |
410 | if (testonly) | |
411 | goto out; | |
412 | ||
413 | jme->phylink = phylink; | |
414 | ||
eb352b83 GFT |
415 | ghc = jme->reg_ghc & ~(GHC_SPEED | GHC_DPX | |
416 | GHC_TO_CLK_PCIE | GHC_TXMAC_CLK_PCIE | | |
417 | GHC_TO_CLK_GPHY | GHC_TXMAC_CLK_GPHY); | |
95252236 GFT |
418 | switch (phylink & PHY_LINK_SPEED_MASK) { |
419 | case PHY_LINK_SPEED_10M: | |
4f40bf46 | 420 | ghc |= GHC_SPEED_10M | |
421 | GHC_TO_CLK_PCIE | GHC_TXMAC_CLK_PCIE; | |
95252236 | 422 | strcat(linkmsg, "10 Mbps, "); |
95252236 GFT |
423 | break; |
424 | case PHY_LINK_SPEED_100M: | |
4f40bf46 | 425 | ghc |= GHC_SPEED_100M | |
426 | GHC_TO_CLK_PCIE | GHC_TXMAC_CLK_PCIE; | |
95252236 | 427 | strcat(linkmsg, "100 Mbps, "); |
95252236 GFT |
428 | break; |
429 | case PHY_LINK_SPEED_1000M: | |
4f40bf46 | 430 | ghc |= GHC_SPEED_1000M | |
431 | GHC_TO_CLK_GPHY | GHC_TXMAC_CLK_GPHY; | |
95252236 | 432 | strcat(linkmsg, "1000 Mbps, "); |
95252236 GFT |
433 | break; |
434 | default: | |
435 | break; | |
436 | } | |
95252236 GFT |
437 | |
438 | if (phylink & PHY_LINK_DUPLEX) { | |
439 | jwrite32(jme, JME_TXMCS, TXMCS_DEFAULT); | |
a821ebe5 | 440 | ghc |= GHC_DPX; |
95252236 GFT |
441 | } else { |
442 | jwrite32(jme, JME_TXMCS, TXMCS_DEFAULT | | |
443 | TXMCS_BACKOFF | | |
444 | TXMCS_CARRIERSENSE | | |
445 | TXMCS_COLLISION); | |
446 | jwrite32(jme, JME_TXTRHD, TXTRHD_TXPEN | | |
447 | ((0x2000 << TXTRHD_TXP_SHIFT) & TXTRHD_TXP) | | |
448 | TXTRHD_TXREN | | |
449 | ((8 << TXTRHD_TXRL_SHIFT) & TXTRHD_TXRL)); | |
450 | } | |
a821ebe5 GFT |
451 | |
452 | gpreg1 = GPREG1_DEFAULT; | |
453 | if (is_buggy250(jme->pdev->device, jme->chiprev)) { | |
454 | if (!(phylink & PHY_LINK_DUPLEX)) | |
455 | gpreg1 |= GPREG1_HALFMODEPATCH; | |
456 | switch (phylink & PHY_LINK_SPEED_MASK) { | |
457 | case PHY_LINK_SPEED_10M: | |
458 | jme_set_phyfifoa(jme); | |
459 | gpreg1 |= GPREG1_RSSPATCH; | |
460 | break; | |
461 | case PHY_LINK_SPEED_100M: | |
462 | jme_set_phyfifob(jme); | |
463 | gpreg1 |= GPREG1_RSSPATCH; | |
464 | break; | |
465 | case PHY_LINK_SPEED_1000M: | |
466 | jme_set_phyfifoa(jme); | |
467 | break; | |
468 | default: | |
469 | break; | |
470 | } | |
471 | } | |
95252236 | 472 | |
4f40bf46 | 473 | jwrite32(jme, JME_GPREG1, gpreg1); |
95252236 | 474 | jwrite32(jme, JME_GHC, ghc); |
4f40bf46 | 475 | jme->reg_ghc = ghc; |
95252236 | 476 | |
4f40bf46 | 477 | strcat(linkmsg, (phylink & PHY_LINK_DUPLEX) ? |
478 | "Full-Duplex, " : | |
479 | "Half-Duplex, "); | |
480 | strcat(linkmsg, (phylink & PHY_LINK_MDI_STAT) ? | |
481 | "MDI-X" : | |
482 | "MDI"); | |
f8502ce4 | 483 | netif_info(jme, link, jme->dev, "Link is up at %s.\n", linkmsg); |
95252236 GFT |
484 | netif_carrier_on(netdev); |
485 | } else { | |
486 | if (testonly) | |
487 | goto out; | |
488 | ||
f8502ce4 | 489 | netif_info(jme, link, jme->dev, "Link is down.\n"); |
95252236 GFT |
490 | jme->phylink = 0; |
491 | netif_carrier_off(netdev); | |
492 | } | |
493 | ||
494 | out: | |
495 | return rc; | |
496 | } | |
497 | ||
498 | static int | |
499 | jme_setup_tx_resources(struct jme_adapter *jme) | |
500 | { | |
501 | struct jme_ring *txring = &(jme->txring[0]); | |
502 | ||
503 | txring->alloc = dma_alloc_coherent(&(jme->pdev->dev), | |
504 | TX_RING_ALLOC_SIZE(jme->tx_ring_size), | |
505 | &(txring->dmaalloc), | |
506 | GFP_ATOMIC); | |
507 | ||
47bd10d1 GFT |
508 | if (!txring->alloc) |
509 | goto err_set_null; | |
95252236 GFT |
510 | |
511 | /* | |
512 | * 16 Bytes align | |
513 | */ | |
514 | txring->desc = (void *)ALIGN((unsigned long)(txring->alloc), | |
515 | RING_DESC_ALIGN); | |
516 | txring->dma = ALIGN(txring->dmaalloc, RING_DESC_ALIGN); | |
517 | txring->next_to_use = 0; | |
518 | atomic_set(&txring->next_to_clean, 0); | |
519 | atomic_set(&txring->nr_free, jme->tx_ring_size); | |
520 | ||
47bd10d1 GFT |
521 | txring->bufinf = kmalloc(sizeof(struct jme_buffer_info) * |
522 | jme->tx_ring_size, GFP_ATOMIC); | |
523 | if (unlikely(!(txring->bufinf))) | |
524 | goto err_free_txring; | |
525 | ||
95252236 GFT |
526 | /* |
527 | * Initialize Transmit Descriptors | |
528 | */ | |
529 | memset(txring->alloc, 0, TX_RING_ALLOC_SIZE(jme->tx_ring_size)); | |
530 | memset(txring->bufinf, 0, | |
531 | sizeof(struct jme_buffer_info) * jme->tx_ring_size); | |
532 | ||
533 | return 0; | |
47bd10d1 GFT |
534 | |
535 | err_free_txring: | |
536 | dma_free_coherent(&(jme->pdev->dev), | |
537 | TX_RING_ALLOC_SIZE(jme->tx_ring_size), | |
538 | txring->alloc, | |
539 | txring->dmaalloc); | |
540 | ||
541 | err_set_null: | |
542 | txring->desc = NULL; | |
543 | txring->dmaalloc = 0; | |
544 | txring->dma = 0; | |
545 | txring->bufinf = NULL; | |
546 | ||
547 | return -ENOMEM; | |
95252236 GFT |
548 | } |
549 | ||
550 | static void | |
551 | jme_free_tx_resources(struct jme_adapter *jme) | |
552 | { | |
553 | int i; | |
554 | struct jme_ring *txring = &(jme->txring[0]); | |
eacf69a1 | 555 | struct jme_buffer_info *txbi; |
95252236 GFT |
556 | |
557 | if (txring->alloc) { | |
47bd10d1 GFT |
558 | if (txring->bufinf) { |
559 | for (i = 0 ; i < jme->tx_ring_size ; ++i) { | |
560 | txbi = txring->bufinf + i; | |
561 | if (txbi->skb) { | |
562 | dev_kfree_skb(txbi->skb); | |
563 | txbi->skb = NULL; | |
564 | } | |
565 | txbi->mapping = 0; | |
566 | txbi->len = 0; | |
567 | txbi->nr_desc = 0; | |
568 | txbi->start_xmit = 0; | |
95252236 | 569 | } |
47bd10d1 | 570 | kfree(txring->bufinf); |
95252236 GFT |
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; | |
47bd10d1 | 582 | txring->bufinf = NULL; |
95252236 GFT |
583 | } |
584 | txring->next_to_use = 0; | |
585 | atomic_set(&txring->next_to_clean, 0); | |
586 | atomic_set(&txring->nr_free, 0); | |
95252236 GFT |
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 | { | |
eacf69a1 | 657 | struct jme_ring *rxring = &(jme->rxring[0]); |
95252236 GFT |
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) { | |
47bd10d1 GFT |
724 | if (rxring->bufinf) { |
725 | for (i = 0 ; i < jme->rx_ring_size ; ++i) | |
726 | jme_free_rx_buf(jme, i); | |
727 | kfree(rxring->bufinf); | |
728 | } | |
95252236 GFT |
729 | |
730 | dma_free_coherent(&(jme->pdev->dev), | |
731 | RX_RING_ALLOC_SIZE(jme->rx_ring_size), | |
732 | rxring->alloc, | |
733 | rxring->dmaalloc); | |
734 | rxring->alloc = NULL; | |
735 | rxring->desc = NULL; | |
736 | rxring->dmaalloc = 0; | |
737 | rxring->dma = 0; | |
47bd10d1 | 738 | rxring->bufinf = NULL; |
95252236 GFT |
739 | } |
740 | rxring->next_to_use = 0; | |
741 | atomic_set(&rxring->next_to_clean, 0); | |
742 | } | |
743 | ||
744 | static int | |
745 | jme_setup_rx_resources(struct jme_adapter *jme) | |
746 | { | |
747 | int i; | |
748 | struct jme_ring *rxring = &(jme->rxring[0]); | |
749 | ||
750 | rxring->alloc = dma_alloc_coherent(&(jme->pdev->dev), | |
751 | RX_RING_ALLOC_SIZE(jme->rx_ring_size), | |
752 | &(rxring->dmaalloc), | |
753 | GFP_ATOMIC); | |
47bd10d1 GFT |
754 | if (!rxring->alloc) |
755 | goto err_set_null; | |
95252236 GFT |
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 | ||
47bd10d1 GFT |
766 | rxring->bufinf = kmalloc(sizeof(struct jme_buffer_info) * |
767 | jme->rx_ring_size, GFP_ATOMIC); | |
768 | if (unlikely(!(rxring->bufinf))) | |
769 | goto err_free_rxring; | |
770 | ||
95252236 GFT |
771 | /* |
772 | * Initiallize Receive Descriptors | |
773 | */ | |
47bd10d1 GFT |
774 | memset(rxring->bufinf, 0, |
775 | sizeof(struct jme_buffer_info) * jme->rx_ring_size); | |
95252236 GFT |
776 | for (i = 0 ; i < jme->rx_ring_size ; ++i) { |
777 | if (unlikely(jme_make_new_rx_buf(jme, i))) { | |
778 | jme_free_rx_resources(jme); | |
779 | return -ENOMEM; | |
780 | } | |
781 | ||
782 | jme_set_clean_rxdesc(jme, i); | |
783 | } | |
784 | ||
785 | return 0; | |
47bd10d1 GFT |
786 | |
787 | err_free_rxring: | |
788 | dma_free_coherent(&(jme->pdev->dev), | |
789 | RX_RING_ALLOC_SIZE(jme->rx_ring_size), | |
790 | rxring->alloc, | |
791 | rxring->dmaalloc); | |
792 | err_set_null: | |
793 | rxring->desc = NULL; | |
794 | rxring->dmaalloc = 0; | |
795 | rxring->dma = 0; | |
796 | rxring->bufinf = NULL; | |
797 | ||
798 | return -ENOMEM; | |
95252236 GFT |
799 | } |
800 | ||
801 | static inline void | |
802 | jme_enable_rx_engine(struct jme_adapter *jme) | |
803 | { | |
804 | /* | |
805 | * Select Queue 0 | |
806 | */ | |
807 | jwrite32(jme, JME_RXCS, jme->reg_rxcs | | |
808 | RXCS_QUEUESEL_Q0); | |
809 | wmb(); | |
810 | ||
811 | /* | |
812 | * Setup RX DMA Bass Address | |
813 | */ | |
eacf69a1 | 814 | jwrite32(jme, JME_RXDBA_LO, (__u64)(jme->rxring[0].dma) & 0xFFFFFFFFUL); |
95252236 | 815 | jwrite32(jme, JME_RXDBA_HI, (__u64)(jme->rxring[0].dma) >> 32); |
eacf69a1 | 816 | jwrite32(jme, JME_RXNDA, (__u64)(jme->rxring[0].dma) & 0xFFFFFFFFUL); |
95252236 GFT |
817 | |
818 | /* | |
819 | * Setup RX Descriptor Count | |
820 | */ | |
821 | jwrite32(jme, JME_RXQDC, jme->rx_ring_size); | |
822 | ||
823 | /* | |
824 | * Setup Unicast Filter | |
825 | */ | |
826 | jme_set_multi(jme->dev); | |
827 | ||
828 | /* | |
829 | * Enable RX Engine | |
830 | */ | |
831 | wmb(); | |
832 | jwrite32(jme, JME_RXCS, jme->reg_rxcs | | |
833 | RXCS_QUEUESEL_Q0 | | |
834 | RXCS_ENABLE | | |
835 | RXCS_QST); | |
836 | } | |
837 | ||
838 | static inline void | |
839 | jme_restart_rx_engine(struct jme_adapter *jme) | |
840 | { | |
841 | /* | |
842 | * Start RX Engine | |
843 | */ | |
844 | jwrite32(jme, JME_RXCS, jme->reg_rxcs | | |
845 | RXCS_QUEUESEL_Q0 | | |
846 | RXCS_ENABLE | | |
847 | RXCS_QST); | |
848 | } | |
849 | ||
850 | static inline void | |
851 | jme_disable_rx_engine(struct jme_adapter *jme) | |
852 | { | |
853 | int i; | |
854 | u32 val; | |
855 | ||
856 | /* | |
857 | * Disable RX Engine | |
858 | */ | |
859 | jwrite32(jme, JME_RXCS, jme->reg_rxcs); | |
860 | wmb(); | |
861 | ||
862 | val = jread32(jme, JME_RXCS); | |
863 | for (i = JME_RX_DISABLE_TIMEOUT ; (val & RXCS_ENABLE) && i > 0 ; --i) { | |
864 | mdelay(1); | |
865 | val = jread32(jme, JME_RXCS); | |
866 | rmb(); | |
867 | } | |
868 | ||
869 | if (!i) | |
870 | jeprintk(jme->pdev, "Disable RX engine timeout.\n"); | |
871 | ||
872 | } | |
873 | ||
874 | static int | |
875 | jme_rxsum_ok(struct jme_adapter *jme, u16 flags) | |
876 | { | |
877 | if (!(flags & (RXWBFLAG_TCPON | RXWBFLAG_UDPON | RXWBFLAG_IPV4))) | |
878 | return false; | |
879 | ||
ce7d70af GFT |
880 | if (unlikely((flags & (RXWBFLAG_MF | RXWBFLAG_TCPON | RXWBFLAG_TCPCS)) |
881 | == RXWBFLAG_TCPON)) { | |
882 | if (flags & RXWBFLAG_IPV4) | |
f8502ce4 | 883 | netif_err(jme, rx_err, jme->dev, "TCP Checksum error\n"); |
ce7d70af | 884 | return false; |
95252236 GFT |
885 | } |
886 | ||
ce7d70af GFT |
887 | if (unlikely((flags & (RXWBFLAG_MF | RXWBFLAG_UDPON | RXWBFLAG_UDPCS)) |
888 | == RXWBFLAG_UDPON)) { | |
889 | if (flags & RXWBFLAG_IPV4) | |
f8502ce4 | 890 | netif_err(jme, rx_err, jme->dev, "UDP Checksum error.\n"); |
ce7d70af | 891 | return false; |
95252236 GFT |
892 | } |
893 | ||
ce7d70af GFT |
894 | if (unlikely((flags & (RXWBFLAG_IPV4 | RXWBFLAG_IPCS)) |
895 | == RXWBFLAG_IPV4)) { | |
f8502ce4 | 896 | netif_err(jme, rx_err, jme->dev, "IPv4 Checksum error.\n"); |
ce7d70af | 897 | return false; |
95252236 GFT |
898 | } |
899 | ||
900 | return true; | |
95252236 GFT |
901 | } |
902 | ||
903 | static void | |
904 | jme_alloc_and_feed_skb(struct jme_adapter *jme, int idx) | |
905 | { | |
906 | struct jme_ring *rxring = &(jme->rxring[0]); | |
907 | struct rxdesc *rxdesc = rxring->desc; | |
908 | struct jme_buffer_info *rxbi = rxring->bufinf; | |
909 | struct sk_buff *skb; | |
910 | int framesize; | |
911 | ||
912 | rxdesc += idx; | |
913 | rxbi += idx; | |
914 | ||
915 | skb = rxbi->skb; | |
916 | pci_dma_sync_single_for_cpu(jme->pdev, | |
917 | rxbi->mapping, | |
918 | rxbi->len, | |
919 | PCI_DMA_FROMDEVICE); | |
920 | ||
921 | if (unlikely(jme_make_new_rx_buf(jme, idx))) { | |
922 | pci_dma_sync_single_for_device(jme->pdev, | |
923 | rxbi->mapping, | |
924 | rxbi->len, | |
925 | PCI_DMA_FROMDEVICE); | |
926 | ||
927 | ++(NET_STAT(jme).rx_dropped); | |
928 | } else { | |
929 | framesize = le16_to_cpu(rxdesc->descwb.framesize) | |
930 | - RX_PREPAD_SIZE; | |
931 | ||
932 | skb_reserve(skb, RX_PREPAD_SIZE); | |
933 | skb_put(skb, framesize); | |
934 | skb->protocol = eth_type_trans(skb, jme->dev); | |
935 | ||
31c221c4 | 936 | if (jme_rxsum_ok(jme, le16_to_cpu(rxdesc->descwb.flags))) |
95252236 GFT |
937 | skb->ip_summed = CHECKSUM_UNNECESSARY; |
938 | else | |
939 | skb->ip_summed = CHECKSUM_NONE; | |
940 | ||
31c221c4 | 941 | if (rxdesc->descwb.flags & cpu_to_le16(RXWBFLAG_TAGON)) { |
95252236 GFT |
942 | if (jme->vlgrp) { |
943 | jme->jme_vlan_rx(skb, jme->vlgrp, | |
31c221c4 | 944 | le16_to_cpu(rxdesc->descwb.vlan)); |
95252236 | 945 | NET_STAT(jme).rx_bytes += 4; |
17da69b8 GFT |
946 | } else { |
947 | dev_kfree_skb(skb); | |
95252236 GFT |
948 | } |
949 | } else { | |
950 | jme->jme_rx(skb); | |
951 | } | |
952 | ||
31c221c4 HH |
953 | if ((rxdesc->descwb.flags & cpu_to_le16(RXWBFLAG_DEST)) == |
954 | cpu_to_le16(RXWBFLAG_DEST_MUL)) | |
95252236 GFT |
955 | ++(NET_STAT(jme).multicast); |
956 | ||
95252236 GFT |
957 | NET_STAT(jme).rx_bytes += framesize; |
958 | ++(NET_STAT(jme).rx_packets); | |
959 | } | |
960 | ||
961 | jme_set_clean_rxdesc(jme, idx); | |
962 | ||
963 | } | |
964 | ||
965 | static int | |
966 | jme_process_receive(struct jme_adapter *jme, int limit) | |
967 | { | |
968 | struct jme_ring *rxring = &(jme->rxring[0]); | |
969 | struct rxdesc *rxdesc = rxring->desc; | |
970 | int i, j, ccnt, desccnt, mask = jme->rx_ring_mask; | |
971 | ||
972 | if (unlikely(!atomic_dec_and_test(&jme->rx_cleaning))) | |
973 | goto out_inc; | |
974 | ||
975 | if (unlikely(atomic_read(&jme->link_changing) != 1)) | |
976 | goto out_inc; | |
977 | ||
978 | if (unlikely(!netif_carrier_ok(jme->dev))) | |
979 | goto out_inc; | |
980 | ||
981 | i = atomic_read(&rxring->next_to_clean); | |
858b9ced | 982 | while (limit > 0) { |
95252236 GFT |
983 | rxdesc = rxring->desc; |
984 | rxdesc += i; | |
985 | ||
31c221c4 | 986 | if ((rxdesc->descwb.flags & cpu_to_le16(RXWBFLAG_OWN)) || |
95252236 GFT |
987 | !(rxdesc->descwb.desccnt & RXWBDCNT_WBCPL)) |
988 | goto out; | |
858b9ced | 989 | --limit; |
95252236 GFT |
990 | |
991 | desccnt = rxdesc->descwb.desccnt & RXWBDCNT_DCNT; | |
992 | ||
993 | if (unlikely(desccnt > 1 || | |
994 | rxdesc->descwb.errstat & RXWBERR_ALLERR)) { | |
995 | ||
996 | if (rxdesc->descwb.errstat & RXWBERR_CRCERR) | |
997 | ++(NET_STAT(jme).rx_crc_errors); | |
998 | else if (rxdesc->descwb.errstat & RXWBERR_OVERUN) | |
999 | ++(NET_STAT(jme).rx_fifo_errors); | |
1000 | else | |
1001 | ++(NET_STAT(jme).rx_errors); | |
1002 | ||
1003 | if (desccnt > 1) | |
1004 | limit -= desccnt - 1; | |
1005 | ||
1006 | for (j = i, ccnt = desccnt ; ccnt-- ; ) { | |
1007 | jme_set_clean_rxdesc(jme, j); | |
1008 | j = (j + 1) & (mask); | |
1009 | } | |
1010 | ||
1011 | } else { | |
1012 | jme_alloc_and_feed_skb(jme, i); | |
1013 | } | |
1014 | ||
1015 | i = (i + desccnt) & (mask); | |
1016 | } | |
1017 | ||
1018 | out: | |
1019 | atomic_set(&rxring->next_to_clean, i); | |
1020 | ||
1021 | out_inc: | |
1022 | atomic_inc(&jme->rx_cleaning); | |
1023 | ||
1024 | return limit > 0 ? limit : 0; | |
1025 | ||
1026 | } | |
1027 | ||
1028 | static void | |
1029 | jme_attempt_pcc(struct dynpcc_info *dpi, int atmp) | |
1030 | { | |
1031 | if (likely(atmp == dpi->cur)) { | |
1032 | dpi->cnt = 0; | |
1033 | return; | |
1034 | } | |
1035 | ||
1036 | if (dpi->attempt == atmp) { | |
1037 | ++(dpi->cnt); | |
1038 | } else { | |
1039 | dpi->attempt = atmp; | |
1040 | dpi->cnt = 0; | |
1041 | } | |
1042 | ||
1043 | } | |
1044 | ||
1045 | static void | |
1046 | jme_dynamic_pcc(struct jme_adapter *jme) | |
1047 | { | |
1048 | register struct dynpcc_info *dpi = &(jme->dpi); | |
1049 | ||
1050 | if ((NET_STAT(jme).rx_bytes - dpi->last_bytes) > PCC_P3_THRESHOLD) | |
1051 | jme_attempt_pcc(dpi, PCC_P3); | |
8e95a202 JP |
1052 | else if ((NET_STAT(jme).rx_packets - dpi->last_pkts) > PCC_P2_THRESHOLD || |
1053 | dpi->intr_cnt > PCC_INTR_THRESHOLD) | |
95252236 GFT |
1054 | jme_attempt_pcc(dpi, PCC_P2); |
1055 | else | |
1056 | jme_attempt_pcc(dpi, PCC_P1); | |
1057 | ||
1058 | if (unlikely(dpi->attempt != dpi->cur && dpi->cnt > 5)) { | |
1059 | if (dpi->attempt < dpi->cur) | |
1060 | tasklet_schedule(&jme->rxclean_task); | |
1061 | jme_set_rx_pcc(jme, dpi->attempt); | |
1062 | dpi->cur = dpi->attempt; | |
1063 | dpi->cnt = 0; | |
1064 | } | |
1065 | } | |
1066 | ||
1067 | static void | |
1068 | jme_start_pcc_timer(struct jme_adapter *jme) | |
1069 | { | |
1070 | struct dynpcc_info *dpi = &(jme->dpi); | |
1071 | dpi->last_bytes = NET_STAT(jme).rx_bytes; | |
1072 | dpi->last_pkts = NET_STAT(jme).rx_packets; | |
1073 | dpi->intr_cnt = 0; | |
1074 | jwrite32(jme, JME_TMCSR, | |
1075 | TMCSR_EN | ((0xFFFFFF - PCC_INTERVAL_US) & TMCSR_CNT)); | |
1076 | } | |
1077 | ||
1078 | static inline void | |
1079 | jme_stop_pcc_timer(struct jme_adapter *jme) | |
1080 | { | |
1081 | jwrite32(jme, JME_TMCSR, 0); | |
1082 | } | |
1083 | ||
1084 | static void | |
1085 | jme_shutdown_nic(struct jme_adapter *jme) | |
1086 | { | |
1087 | u32 phylink; | |
1088 | ||
1089 | phylink = jme_linkstat_from_phy(jme); | |
1090 | ||
1091 | if (!(phylink & PHY_LINK_UP)) { | |
1092 | /* | |
1093 | * Disable all interrupt before issue timer | |
1094 | */ | |
1095 | jme_stop_irq(jme); | |
1096 | jwrite32(jme, JME_TIMER2, TMCSR_EN | 0xFFFFFE); | |
1097 | } | |
1098 | } | |
1099 | ||
1100 | static void | |
1101 | jme_pcc_tasklet(unsigned long arg) | |
1102 | { | |
1103 | struct jme_adapter *jme = (struct jme_adapter *)arg; | |
1104 | struct net_device *netdev = jme->dev; | |
1105 | ||
1106 | if (unlikely(test_bit(JME_FLAG_SHUTDOWN, &jme->flags))) { | |
1107 | jme_shutdown_nic(jme); | |
1108 | return; | |
1109 | } | |
1110 | ||
1111 | if (unlikely(!netif_carrier_ok(netdev) || | |
1112 | (atomic_read(&jme->link_changing) != 1) | |
1113 | )) { | |
1114 | jme_stop_pcc_timer(jme); | |
1115 | return; | |
1116 | } | |
1117 | ||
1118 | if (!(test_bit(JME_FLAG_POLL, &jme->flags))) | |
1119 | jme_dynamic_pcc(jme); | |
1120 | ||
1121 | jme_start_pcc_timer(jme); | |
1122 | } | |
1123 | ||
1124 | static inline void | |
1125 | jme_polling_mode(struct jme_adapter *jme) | |
1126 | { | |
1127 | jme_set_rx_pcc(jme, PCC_OFF); | |
1128 | } | |
1129 | ||
1130 | static inline void | |
1131 | jme_interrupt_mode(struct jme_adapter *jme) | |
1132 | { | |
1133 | jme_set_rx_pcc(jme, PCC_P1); | |
1134 | } | |
1135 | ||
1136 | static inline int | |
1137 | jme_pseudo_hotplug_enabled(struct jme_adapter *jme) | |
1138 | { | |
1139 | u32 apmc; | |
1140 | apmc = jread32(jme, JME_APMC); | |
1141 | return apmc & JME_APMC_PSEUDO_HP_EN; | |
1142 | } | |
1143 | ||
1144 | static void | |
1145 | jme_start_shutdown_timer(struct jme_adapter *jme) | |
1146 | { | |
1147 | u32 apmc; | |
1148 | ||
1149 | apmc = jread32(jme, JME_APMC) | JME_APMC_PCIE_SD_EN; | |
1150 | apmc &= ~JME_APMC_EPIEN_CTRL; | |
1151 | if (!no_extplug) { | |
1152 | jwrite32f(jme, JME_APMC, apmc | JME_APMC_EPIEN_CTRL_EN); | |
1153 | wmb(); | |
1154 | } | |
1155 | jwrite32f(jme, JME_APMC, apmc); | |
1156 | ||
1157 | jwrite32f(jme, JME_TIMER2, 0); | |
1158 | set_bit(JME_FLAG_SHUTDOWN, &jme->flags); | |
1159 | jwrite32(jme, JME_TMCSR, | |
1160 | TMCSR_EN | ((0xFFFFFF - APMC_PHP_SHUTDOWN_DELAY) & TMCSR_CNT)); | |
1161 | } | |
1162 | ||
1163 | static void | |
1164 | jme_stop_shutdown_timer(struct jme_adapter *jme) | |
1165 | { | |
1166 | u32 apmc; | |
1167 | ||
1168 | jwrite32f(jme, JME_TMCSR, 0); | |
1169 | jwrite32f(jme, JME_TIMER2, 0); | |
1170 | clear_bit(JME_FLAG_SHUTDOWN, &jme->flags); | |
1171 | ||
1172 | apmc = jread32(jme, JME_APMC); | |
1173 | apmc &= ~(JME_APMC_PCIE_SD_EN | JME_APMC_EPIEN_CTRL); | |
1174 | jwrite32f(jme, JME_APMC, apmc | JME_APMC_EPIEN_CTRL_DIS); | |
1175 | wmb(); | |
1176 | jwrite32f(jme, JME_APMC, apmc); | |
1177 | } | |
1178 | ||
1179 | static void | |
1180 | jme_link_change_tasklet(unsigned long arg) | |
1181 | { | |
1182 | struct jme_adapter *jme = (struct jme_adapter *)arg; | |
1183 | struct net_device *netdev = jme->dev; | |
1184 | int rc; | |
1185 | ||
1186 | while (!atomic_dec_and_test(&jme->link_changing)) { | |
1187 | atomic_inc(&jme->link_changing); | |
f8502ce4 | 1188 | netif_info(jme, intr, jme->dev, "Get link change lock failed.\n"); |
95252236 | 1189 | while (atomic_read(&jme->link_changing) != 1) |
f8502ce4 | 1190 | netif_info(jme, intr, jme->dev, "Waiting link change lock.\n"); |
95252236 GFT |
1191 | } |
1192 | ||
1193 | if (jme_check_link(netdev, 1) && jme->old_mtu == netdev->mtu) | |
1194 | goto out; | |
1195 | ||
1196 | jme->old_mtu = netdev->mtu; | |
1197 | netif_stop_queue(netdev); | |
1198 | if (jme_pseudo_hotplug_enabled(jme)) | |
1199 | jme_stop_shutdown_timer(jme); | |
1200 | ||
1201 | jme_stop_pcc_timer(jme); | |
1202 | tasklet_disable(&jme->txclean_task); | |
1203 | tasklet_disable(&jme->rxclean_task); | |
1204 | tasklet_disable(&jme->rxempty_task); | |
1205 | ||
1206 | if (netif_carrier_ok(netdev)) { | |
1207 | jme_reset_ghc_speed(jme); | |
1208 | jme_disable_rx_engine(jme); | |
1209 | jme_disable_tx_engine(jme); | |
1210 | jme_reset_mac_processor(jme); | |
1211 | jme_free_rx_resources(jme); | |
1212 | jme_free_tx_resources(jme); | |
1213 | ||
1214 | if (test_bit(JME_FLAG_POLL, &jme->flags)) | |
1215 | jme_polling_mode(jme); | |
1216 | ||
1217 | netif_carrier_off(netdev); | |
1218 | } | |
1219 | ||
1220 | jme_check_link(netdev, 0); | |
1221 | if (netif_carrier_ok(netdev)) { | |
1222 | rc = jme_setup_rx_resources(jme); | |
1223 | if (rc) { | |
1224 | jeprintk(jme->pdev, "Allocating resources for RX error" | |
1225 | ", Device STOPPED!\n"); | |
1226 | goto out_enable_tasklet; | |
1227 | } | |
1228 | ||
1229 | rc = jme_setup_tx_resources(jme); | |
1230 | if (rc) { | |
1231 | jeprintk(jme->pdev, "Allocating resources for TX error" | |
1232 | ", Device STOPPED!\n"); | |
1233 | goto err_out_free_rx_resources; | |
1234 | } | |
1235 | ||
1236 | jme_enable_rx_engine(jme); | |
1237 | jme_enable_tx_engine(jme); | |
1238 | ||
1239 | netif_start_queue(netdev); | |
1240 | ||
1241 | if (test_bit(JME_FLAG_POLL, &jme->flags)) | |
1242 | jme_interrupt_mode(jme); | |
1243 | ||
1244 | jme_start_pcc_timer(jme); | |
1245 | } else if (jme_pseudo_hotplug_enabled(jme)) { | |
1246 | jme_start_shutdown_timer(jme); | |
1247 | } | |
1248 | ||
1249 | goto out_enable_tasklet; | |
1250 | ||
1251 | err_out_free_rx_resources: | |
1252 | jme_free_rx_resources(jme); | |
1253 | out_enable_tasklet: | |
1254 | tasklet_enable(&jme->txclean_task); | |
1255 | tasklet_hi_enable(&jme->rxclean_task); | |
1256 | tasklet_hi_enable(&jme->rxempty_task); | |
1257 | out: | |
1258 | atomic_inc(&jme->link_changing); | |
1259 | } | |
1260 | ||
1261 | static void | |
1262 | jme_rx_clean_tasklet(unsigned long arg) | |
1263 | { | |
1264 | struct jme_adapter *jme = (struct jme_adapter *)arg; | |
1265 | struct dynpcc_info *dpi = &(jme->dpi); | |
1266 | ||
1267 | jme_process_receive(jme, jme->rx_ring_size); | |
1268 | ++(dpi->intr_cnt); | |
1269 | ||
1270 | } | |
1271 | ||
1272 | static int | |
1273 | jme_poll(JME_NAPI_HOLDER(holder), JME_NAPI_WEIGHT(budget)) | |
1274 | { | |
1275 | struct jme_adapter *jme = jme_napi_priv(holder); | |
95252236 GFT |
1276 | int rest; |
1277 | ||
1278 | rest = jme_process_receive(jme, JME_NAPI_WEIGHT_VAL(budget)); | |
1279 | ||
1280 | while (atomic_read(&jme->rx_empty) > 0) { | |
1281 | atomic_dec(&jme->rx_empty); | |
1282 | ++(NET_STAT(jme).rx_dropped); | |
1283 | jme_restart_rx_engine(jme); | |
1284 | } | |
1285 | atomic_inc(&jme->rx_empty); | |
1286 | ||
1287 | if (rest) { | |
1288 | JME_RX_COMPLETE(netdev, holder); | |
1289 | jme_interrupt_mode(jme); | |
1290 | } | |
1291 | ||
1292 | JME_NAPI_WEIGHT_SET(budget, rest); | |
1293 | return JME_NAPI_WEIGHT_VAL(budget) - rest; | |
1294 | } | |
1295 | ||
1296 | static void | |
1297 | jme_rx_empty_tasklet(unsigned long arg) | |
1298 | { | |
1299 | struct jme_adapter *jme = (struct jme_adapter *)arg; | |
1300 | ||
1301 | if (unlikely(atomic_read(&jme->link_changing) != 1)) | |
1302 | return; | |
1303 | ||
1304 | if (unlikely(!netif_carrier_ok(jme->dev))) | |
1305 | return; | |
1306 | ||
f8502ce4 | 1307 | netif_info(jme, rx_status, jme->dev, "RX Queue Full!\n"); |
95252236 GFT |
1308 | |
1309 | jme_rx_clean_tasklet(arg); | |
1310 | ||
1311 | while (atomic_read(&jme->rx_empty) > 0) { | |
1312 | atomic_dec(&jme->rx_empty); | |
1313 | ++(NET_STAT(jme).rx_dropped); | |
1314 | jme_restart_rx_engine(jme); | |
1315 | } | |
1316 | atomic_inc(&jme->rx_empty); | |
1317 | } | |
1318 | ||
1319 | static void | |
1320 | jme_wake_queue_if_stopped(struct jme_adapter *jme) | |
1321 | { | |
eacf69a1 | 1322 | struct jme_ring *txring = &(jme->txring[0]); |
95252236 GFT |
1323 | |
1324 | smp_wmb(); | |
1325 | if (unlikely(netif_queue_stopped(jme->dev) && | |
1326 | atomic_read(&txring->nr_free) >= (jme->tx_wake_threshold))) { | |
f8502ce4 | 1327 | netif_info(jme, tx_done, jme->dev, "TX Queue Waked.\n"); |
95252236 GFT |
1328 | netif_wake_queue(jme->dev); |
1329 | } | |
1330 | ||
1331 | } | |
1332 | ||
1333 | static void | |
1334 | jme_tx_clean_tasklet(unsigned long arg) | |
1335 | { | |
1336 | struct jme_adapter *jme = (struct jme_adapter *)arg; | |
1337 | struct jme_ring *txring = &(jme->txring[0]); | |
1338 | struct txdesc *txdesc = txring->desc; | |
1339 | struct jme_buffer_info *txbi = txring->bufinf, *ctxbi, *ttxbi; | |
1340 | int i, j, cnt = 0, max, err, mask; | |
1341 | ||
1342 | tx_dbg(jme, "Into txclean.\n"); | |
1343 | ||
1344 | if (unlikely(!atomic_dec_and_test(&jme->tx_cleaning))) | |
1345 | goto out; | |
1346 | ||
1347 | if (unlikely(atomic_read(&jme->link_changing) != 1)) | |
1348 | goto out; | |
1349 | ||
1350 | if (unlikely(!netif_carrier_ok(jme->dev))) | |
1351 | goto out; | |
1352 | ||
1353 | max = jme->tx_ring_size - atomic_read(&txring->nr_free); | |
1354 | mask = jme->tx_ring_mask; | |
1355 | ||
1356 | for (i = atomic_read(&txring->next_to_clean) ; cnt < max ; ) { | |
1357 | ||
1358 | ctxbi = txbi + i; | |
1359 | ||
1360 | if (likely(ctxbi->skb && | |
1361 | !(txdesc[i].descwb.flags & TXWBFLAG_OWN))) { | |
1362 | ||
1363 | tx_dbg(jme, "txclean: %d+%d@%lu\n", | |
1364 | i, ctxbi->nr_desc, jiffies); | |
1365 | ||
1366 | err = txdesc[i].descwb.flags & TXWBFLAG_ALLERR; | |
1367 | ||
1368 | for (j = 1 ; j < ctxbi->nr_desc ; ++j) { | |
1369 | ttxbi = txbi + ((i + j) & (mask)); | |
1370 | txdesc[(i + j) & (mask)].dw[0] = 0; | |
1371 | ||
1372 | pci_unmap_page(jme->pdev, | |
1373 | ttxbi->mapping, | |
1374 | ttxbi->len, | |
1375 | PCI_DMA_TODEVICE); | |
1376 | ||
1377 | ttxbi->mapping = 0; | |
1378 | ttxbi->len = 0; | |
1379 | } | |
1380 | ||
1381 | dev_kfree_skb(ctxbi->skb); | |
1382 | ||
1383 | cnt += ctxbi->nr_desc; | |
1384 | ||
1385 | if (unlikely(err)) { | |
1386 | ++(NET_STAT(jme).tx_carrier_errors); | |
1387 | } else { | |
1388 | ++(NET_STAT(jme).tx_packets); | |
1389 | NET_STAT(jme).tx_bytes += ctxbi->len; | |
1390 | } | |
1391 | ||
1392 | ctxbi->skb = NULL; | |
1393 | ctxbi->len = 0; | |
1394 | ctxbi->start_xmit = 0; | |
1395 | ||
1396 | } else { | |
1397 | break; | |
1398 | } | |
1399 | ||
1400 | i = (i + ctxbi->nr_desc) & mask; | |
1401 | ||
1402 | ctxbi->nr_desc = 0; | |
1403 | } | |
1404 | ||
1405 | tx_dbg(jme, "txclean: done %d@%lu.\n", i, jiffies); | |
1406 | atomic_set(&txring->next_to_clean, i); | |
1407 | atomic_add(cnt, &txring->nr_free); | |
1408 | ||
1409 | jme_wake_queue_if_stopped(jme); | |
1410 | ||
1411 | out: | |
1412 | atomic_inc(&jme->tx_cleaning); | |
1413 | } | |
1414 | ||
1415 | static void | |
1416 | jme_intr_msi(struct jme_adapter *jme, u32 intrstat) | |
1417 | { | |
1418 | /* | |
1419 | * Disable interrupt | |
1420 | */ | |
1421 | jwrite32f(jme, JME_IENC, INTR_ENABLE); | |
1422 | ||
1423 | if (intrstat & (INTR_LINKCH | INTR_SWINTR)) { | |
1424 | /* | |
1425 | * Link change event is critical | |
1426 | * all other events are ignored | |
1427 | */ | |
1428 | jwrite32(jme, JME_IEVE, intrstat); | |
1429 | tasklet_schedule(&jme->linkch_task); | |
1430 | goto out_reenable; | |
1431 | } | |
1432 | ||
1433 | if (intrstat & INTR_TMINTR) { | |
1434 | jwrite32(jme, JME_IEVE, INTR_TMINTR); | |
1435 | tasklet_schedule(&jme->pcc_task); | |
1436 | } | |
1437 | ||
1438 | if (intrstat & (INTR_PCCTXTO | INTR_PCCTX)) { | |
1439 | jwrite32(jme, JME_IEVE, INTR_PCCTXTO | INTR_PCCTX | INTR_TX0); | |
1440 | tasklet_schedule(&jme->txclean_task); | |
1441 | } | |
1442 | ||
1443 | if ((intrstat & (INTR_PCCRX0TO | INTR_PCCRX0 | INTR_RX0EMP))) { | |
1444 | jwrite32(jme, JME_IEVE, (intrstat & (INTR_PCCRX0TO | | |
1445 | INTR_PCCRX0 | | |
1446 | INTR_RX0EMP)) | | |
1447 | INTR_RX0); | |
1448 | } | |
1449 | ||
1450 | if (test_bit(JME_FLAG_POLL, &jme->flags)) { | |
1451 | if (intrstat & INTR_RX0EMP) | |
1452 | atomic_inc(&jme->rx_empty); | |
1453 | ||
1454 | if ((intrstat & (INTR_PCCRX0TO | INTR_PCCRX0 | INTR_RX0EMP))) { | |
1455 | if (likely(JME_RX_SCHEDULE_PREP(jme))) { | |
1456 | jme_polling_mode(jme); | |
1457 | JME_RX_SCHEDULE(jme); | |
1458 | } | |
1459 | } | |
1460 | } else { | |
1461 | if (intrstat & INTR_RX0EMP) { | |
1462 | atomic_inc(&jme->rx_empty); | |
1463 | tasklet_hi_schedule(&jme->rxempty_task); | |
1464 | } else if (intrstat & (INTR_PCCRX0TO | INTR_PCCRX0)) { | |
1465 | tasklet_hi_schedule(&jme->rxclean_task); | |
1466 | } | |
1467 | } | |
1468 | ||
1469 | out_reenable: | |
1470 | /* | |
1471 | * Re-enable interrupt | |
1472 | */ | |
1473 | jwrite32f(jme, JME_IENS, INTR_ENABLE); | |
1474 | } | |
1475 | ||
1476 | static irqreturn_t | |
1477 | jme_intr(int irq, void *dev_id) | |
1478 | { | |
1479 | struct net_device *netdev = dev_id; | |
1480 | struct jme_adapter *jme = netdev_priv(netdev); | |
1481 | u32 intrstat; | |
1482 | ||
1483 | intrstat = jread32(jme, JME_IEVE); | |
1484 | ||
1485 | /* | |
1486 | * Check if it's really an interrupt for us | |
1487 | */ | |
576b5223 | 1488 | if (unlikely((intrstat & INTR_ENABLE) == 0)) |
95252236 GFT |
1489 | return IRQ_NONE; |
1490 | ||
1491 | /* | |
1492 | * Check if the device still exist | |
1493 | */ | |
1494 | if (unlikely(intrstat == ~((typeof(intrstat))0))) | |
1495 | return IRQ_NONE; | |
1496 | ||
1497 | jme_intr_msi(jme, intrstat); | |
1498 | ||
1499 | return IRQ_HANDLED; | |
1500 | } | |
1501 | ||
1502 | static irqreturn_t | |
1503 | jme_msi(int irq, void *dev_id) | |
1504 | { | |
1505 | struct net_device *netdev = dev_id; | |
1506 | struct jme_adapter *jme = netdev_priv(netdev); | |
1507 | u32 intrstat; | |
1508 | ||
d1dfa1d1 | 1509 | intrstat = jread32(jme, JME_IEVE); |
95252236 GFT |
1510 | |
1511 | jme_intr_msi(jme, intrstat); | |
1512 | ||
1513 | return IRQ_HANDLED; | |
1514 | } | |
1515 | ||
1516 | static void | |
1517 | jme_reset_link(struct jme_adapter *jme) | |
1518 | { | |
1519 | jwrite32(jme, JME_TMCSR, TMCSR_SWIT); | |
1520 | } | |
1521 | ||
1522 | static void | |
1523 | jme_restart_an(struct jme_adapter *jme) | |
1524 | { | |
1525 | u32 bmcr; | |
1526 | ||
1527 | spin_lock_bh(&jme->phy_lock); | |
1528 | bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR); | |
1529 | bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART); | |
1530 | jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, bmcr); | |
1531 | spin_unlock_bh(&jme->phy_lock); | |
1532 | } | |
1533 | ||
1534 | static int | |
1535 | jme_request_irq(struct jme_adapter *jme) | |
1536 | { | |
1537 | int rc; | |
1538 | struct net_device *netdev = jme->dev; | |
1539 | irq_handler_t handler = jme_intr; | |
1540 | int irq_flags = IRQF_SHARED; | |
1541 | ||
1542 | if (!pci_enable_msi(jme->pdev)) { | |
1543 | set_bit(JME_FLAG_MSI, &jme->flags); | |
1544 | handler = jme_msi; | |
1545 | irq_flags = 0; | |
1546 | } | |
1547 | ||
1548 | rc = request_irq(jme->pdev->irq, handler, irq_flags, netdev->name, | |
1549 | netdev); | |
1550 | if (rc) { | |
1551 | jeprintk(jme->pdev, | |
1552 | "Unable to request %s interrupt (return: %d)\n", | |
1553 | test_bit(JME_FLAG_MSI, &jme->flags) ? "MSI" : "INTx", | |
1554 | rc); | |
1555 | ||
1556 | if (test_bit(JME_FLAG_MSI, &jme->flags)) { | |
1557 | pci_disable_msi(jme->pdev); | |
1558 | clear_bit(JME_FLAG_MSI, &jme->flags); | |
1559 | } | |
1560 | } else { | |
1561 | netdev->irq = jme->pdev->irq; | |
1562 | } | |
1563 | ||
1564 | return rc; | |
1565 | } | |
1566 | ||
1567 | static void | |
1568 | jme_free_irq(struct jme_adapter *jme) | |
1569 | { | |
1570 | free_irq(jme->pdev->irq, jme->dev); | |
1571 | if (test_bit(JME_FLAG_MSI, &jme->flags)) { | |
1572 | pci_disable_msi(jme->pdev); | |
1573 | clear_bit(JME_FLAG_MSI, &jme->flags); | |
1574 | jme->dev->irq = jme->pdev->irq; | |
1575 | } | |
1576 | } | |
1577 | ||
1578 | static int | |
1579 | jme_open(struct net_device *netdev) | |
1580 | { | |
1581 | struct jme_adapter *jme = netdev_priv(netdev); | |
1582 | int rc; | |
1583 | ||
1584 | jme_clear_pm(jme); | |
1585 | JME_NAPI_ENABLE(jme); | |
1586 | ||
38ed0c21 | 1587 | tasklet_enable(&jme->linkch_task); |
95252236 GFT |
1588 | tasklet_enable(&jme->txclean_task); |
1589 | tasklet_hi_enable(&jme->rxclean_task); | |
1590 | tasklet_hi_enable(&jme->rxempty_task); | |
1591 | ||
1592 | rc = jme_request_irq(jme); | |
1593 | if (rc) | |
1594 | goto err_out; | |
1595 | ||
95252236 GFT |
1596 | jme_start_irq(jme); |
1597 | ||
1598 | if (test_bit(JME_FLAG_SSET, &jme->flags)) | |
1599 | jme_set_settings(netdev, &jme->old_ecmd); | |
1600 | else | |
1601 | jme_reset_phy_processor(jme); | |
1602 | ||
1603 | jme_reset_link(jme); | |
1604 | ||
1605 | return 0; | |
1606 | ||
1607 | err_out: | |
1608 | netif_stop_queue(netdev); | |
1609 | netif_carrier_off(netdev); | |
1610 | return rc; | |
1611 | } | |
1612 | ||
724f8805 | 1613 | #ifdef CONFIG_PM |
95252236 GFT |
1614 | static void |
1615 | jme_set_100m_half(struct jme_adapter *jme) | |
1616 | { | |
1617 | u32 bmcr, tmp; | |
1618 | ||
1619 | bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR); | |
1620 | tmp = bmcr & ~(BMCR_ANENABLE | BMCR_SPEED100 | | |
1621 | BMCR_SPEED1000 | BMCR_FULLDPLX); | |
1622 | tmp |= BMCR_SPEED100; | |
1623 | ||
1624 | if (bmcr != tmp) | |
1625 | jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, tmp); | |
1626 | ||
1627 | if (jme->fpgaver) | |
1628 | jwrite32(jme, JME_GHC, GHC_SPEED_100M | GHC_LINK_POLL); | |
1629 | else | |
1630 | jwrite32(jme, JME_GHC, GHC_SPEED_100M); | |
1631 | } | |
1632 | ||
1633 | #define JME_WAIT_LINK_TIME 2000 /* 2000ms */ | |
1634 | static void | |
1635 | jme_wait_link(struct jme_adapter *jme) | |
1636 | { | |
1637 | u32 phylink, to = JME_WAIT_LINK_TIME; | |
1638 | ||
1639 | mdelay(1000); | |
1640 | phylink = jme_linkstat_from_phy(jme); | |
1641 | while (!(phylink & PHY_LINK_UP) && (to -= 10) > 0) { | |
1642 | mdelay(10); | |
1643 | phylink = jme_linkstat_from_phy(jme); | |
1644 | } | |
1645 | } | |
724f8805 | 1646 | #endif |
95252236 GFT |
1647 | |
1648 | static inline void | |
1649 | jme_phy_off(struct jme_adapter *jme) | |
1650 | { | |
1651 | jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, BMCR_PDOWN); | |
1652 | } | |
1653 | ||
1654 | static int | |
1655 | jme_close(struct net_device *netdev) | |
1656 | { | |
1657 | struct jme_adapter *jme = netdev_priv(netdev); | |
1658 | ||
1659 | netif_stop_queue(netdev); | |
1660 | netif_carrier_off(netdev); | |
1661 | ||
1662 | jme_stop_irq(jme); | |
95252236 GFT |
1663 | jme_free_irq(jme); |
1664 | ||
1665 | JME_NAPI_DISABLE(jme); | |
1666 | ||
38ed0c21 GFT |
1667 | tasklet_disable(&jme->linkch_task); |
1668 | tasklet_disable(&jme->txclean_task); | |
1669 | tasklet_disable(&jme->rxclean_task); | |
1670 | tasklet_disable(&jme->rxempty_task); | |
95252236 GFT |
1671 | |
1672 | jme_reset_ghc_speed(jme); | |
1673 | jme_disable_rx_engine(jme); | |
1674 | jme_disable_tx_engine(jme); | |
1675 | jme_reset_mac_processor(jme); | |
1676 | jme_free_rx_resources(jme); | |
1677 | jme_free_tx_resources(jme); | |
1678 | jme->phylink = 0; | |
1679 | jme_phy_off(jme); | |
1680 | ||
1681 | return 0; | |
1682 | } | |
1683 | ||
1684 | static int | |
1685 | jme_alloc_txdesc(struct jme_adapter *jme, | |
1686 | struct sk_buff *skb) | |
1687 | { | |
eacf69a1 | 1688 | struct jme_ring *txring = &(jme->txring[0]); |
95252236 GFT |
1689 | int idx, nr_alloc, mask = jme->tx_ring_mask; |
1690 | ||
1691 | idx = txring->next_to_use; | |
1692 | nr_alloc = skb_shinfo(skb)->nr_frags + 2; | |
1693 | ||
1694 | if (unlikely(atomic_read(&txring->nr_free) < nr_alloc)) | |
1695 | return -1; | |
1696 | ||
1697 | atomic_sub(nr_alloc, &txring->nr_free); | |
1698 | ||
1699 | txring->next_to_use = (txring->next_to_use + nr_alloc) & mask; | |
1700 | ||
1701 | return idx; | |
1702 | } | |
1703 | ||
1704 | static void | |
1705 | jme_fill_tx_map(struct pci_dev *pdev, | |
1706 | struct txdesc *txdesc, | |
1707 | struct jme_buffer_info *txbi, | |
1708 | struct page *page, | |
1709 | u32 page_offset, | |
1710 | u32 len, | |
1711 | u8 hidma) | |
1712 | { | |
1713 | dma_addr_t dmaaddr; | |
1714 | ||
1715 | dmaaddr = pci_map_page(pdev, | |
1716 | page, | |
1717 | page_offset, | |
1718 | len, | |
1719 | PCI_DMA_TODEVICE); | |
1720 | ||
1721 | pci_dma_sync_single_for_device(pdev, | |
1722 | dmaaddr, | |
1723 | len, | |
1724 | PCI_DMA_TODEVICE); | |
1725 | ||
1726 | txdesc->dw[0] = 0; | |
1727 | txdesc->dw[1] = 0; | |
1728 | txdesc->desc2.flags = TXFLAG_OWN; | |
1729 | txdesc->desc2.flags |= (hidma) ? TXFLAG_64BIT : 0; | |
1730 | txdesc->desc2.datalen = cpu_to_le16(len); | |
1731 | txdesc->desc2.bufaddrh = cpu_to_le32((__u64)dmaaddr >> 32); | |
1732 | txdesc->desc2.bufaddrl = cpu_to_le32( | |
1733 | (__u64)dmaaddr & 0xFFFFFFFFUL); | |
1734 | ||
1735 | txbi->mapping = dmaaddr; | |
1736 | txbi->len = len; | |
1737 | } | |
1738 | ||
1739 | static void | |
1740 | jme_map_tx_skb(struct jme_adapter *jme, struct sk_buff *skb, int idx) | |
1741 | { | |
eacf69a1 | 1742 | struct jme_ring *txring = &(jme->txring[0]); |
95252236 GFT |
1743 | struct txdesc *txdesc = txring->desc, *ctxdesc; |
1744 | struct jme_buffer_info *txbi = txring->bufinf, *ctxbi; | |
1745 | u8 hidma = jme->dev->features & NETIF_F_HIGHDMA; | |
1746 | int i, nr_frags = skb_shinfo(skb)->nr_frags; | |
1747 | int mask = jme->tx_ring_mask; | |
1748 | struct skb_frag_struct *frag; | |
1749 | u32 len; | |
1750 | ||
1751 | for (i = 0 ; i < nr_frags ; ++i) { | |
1752 | frag = &skb_shinfo(skb)->frags[i]; | |
1753 | ctxdesc = txdesc + ((idx + i + 2) & (mask)); | |
1754 | ctxbi = txbi + ((idx + i + 2) & (mask)); | |
1755 | ||
1756 | jme_fill_tx_map(jme->pdev, ctxdesc, ctxbi, frag->page, | |
1757 | frag->page_offset, frag->size, hidma); | |
1758 | } | |
1759 | ||
1760 | len = skb_is_nonlinear(skb) ? skb_headlen(skb) : skb->len; | |
1761 | ctxdesc = txdesc + ((idx + 1) & (mask)); | |
1762 | ctxbi = txbi + ((idx + 1) & (mask)); | |
1763 | jme_fill_tx_map(jme->pdev, ctxdesc, ctxbi, virt_to_page(skb->data), | |
1764 | offset_in_page(skb->data), len, hidma); | |
1765 | ||
1766 | } | |
1767 | ||
1768 | static int | |
1769 | jme_expand_header(struct jme_adapter *jme, struct sk_buff *skb) | |
1770 | { | |
1771 | if (unlikely(skb_shinfo(skb)->gso_size && | |
1772 | skb_header_cloned(skb) && | |
1773 | pskb_expand_head(skb, 0, 0, GFP_ATOMIC))) { | |
1774 | dev_kfree_skb(skb); | |
1775 | return -1; | |
1776 | } | |
1777 | ||
1778 | return 0; | |
1779 | } | |
1780 | ||
1781 | static int | |
31c221c4 | 1782 | jme_tx_tso(struct sk_buff *skb, __le16 *mss, u8 *flags) |
95252236 | 1783 | { |
31c221c4 | 1784 | *mss = cpu_to_le16(skb_shinfo(skb)->gso_size << TXDESC_MSS_SHIFT); |
95252236 GFT |
1785 | if (*mss) { |
1786 | *flags |= TXFLAG_LSEN; | |
1787 | ||
1788 | if (skb->protocol == htons(ETH_P_IP)) { | |
1789 | struct iphdr *iph = ip_hdr(skb); | |
1790 | ||
1791 | iph->check = 0; | |
1792 | tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, | |
1793 | iph->daddr, 0, | |
1794 | IPPROTO_TCP, | |
1795 | 0); | |
1796 | } else { | |
1797 | struct ipv6hdr *ip6h = ipv6_hdr(skb); | |
1798 | ||
1799 | tcp_hdr(skb)->check = ~csum_ipv6_magic(&ip6h->saddr, | |
1800 | &ip6h->daddr, 0, | |
1801 | IPPROTO_TCP, | |
1802 | 0); | |
1803 | } | |
1804 | ||
1805 | return 0; | |
1806 | } | |
1807 | ||
1808 | return 1; | |
1809 | } | |
1810 | ||
1811 | static void | |
1812 | jme_tx_csum(struct jme_adapter *jme, struct sk_buff *skb, u8 *flags) | |
1813 | { | |
1814 | if (skb->ip_summed == CHECKSUM_PARTIAL) { | |
1815 | u8 ip_proto; | |
1816 | ||
1817 | switch (skb->protocol) { | |
1818 | case htons(ETH_P_IP): | |
1819 | ip_proto = ip_hdr(skb)->protocol; | |
1820 | break; | |
1821 | case htons(ETH_P_IPV6): | |
1822 | ip_proto = ipv6_hdr(skb)->nexthdr; | |
1823 | break; | |
1824 | default: | |
1825 | ip_proto = 0; | |
1826 | break; | |
1827 | } | |
1828 | ||
1829 | switch (ip_proto) { | |
1830 | case IPPROTO_TCP: | |
1831 | *flags |= TXFLAG_TCPCS; | |
1832 | break; | |
1833 | case IPPROTO_UDP: | |
1834 | *flags |= TXFLAG_UDPCS; | |
1835 | break; | |
1836 | default: | |
f8502ce4 | 1837 | netif_err(jme, tx_err, jme->dev, "Error upper layer protocol.\n"); |
95252236 GFT |
1838 | break; |
1839 | } | |
1840 | } | |
1841 | } | |
1842 | ||
1843 | static inline void | |
31c221c4 | 1844 | jme_tx_vlan(struct sk_buff *skb, __le16 *vlan, u8 *flags) |
95252236 GFT |
1845 | { |
1846 | if (vlan_tx_tag_present(skb)) { | |
1847 | *flags |= TXFLAG_TAGON; | |
31c221c4 | 1848 | *vlan = cpu_to_le16(vlan_tx_tag_get(skb)); |
95252236 GFT |
1849 | } |
1850 | } | |
1851 | ||
1852 | static int | |
7f7fd2da | 1853 | jme_fill_tx_desc(struct jme_adapter *jme, struct sk_buff *skb, int idx) |
95252236 | 1854 | { |
eacf69a1 | 1855 | struct jme_ring *txring = &(jme->txring[0]); |
95252236 GFT |
1856 | struct txdesc *txdesc; |
1857 | struct jme_buffer_info *txbi; | |
1858 | u8 flags; | |
1859 | ||
1860 | txdesc = (struct txdesc *)txring->desc + idx; | |
1861 | txbi = txring->bufinf + idx; | |
1862 | ||
1863 | txdesc->dw[0] = 0; | |
1864 | txdesc->dw[1] = 0; | |
1865 | txdesc->dw[2] = 0; | |
1866 | txdesc->dw[3] = 0; | |
1867 | txdesc->desc1.pktsize = cpu_to_le16(skb->len); | |
1868 | /* | |
1869 | * Set OWN bit at final. | |
1870 | * When kernel transmit faster than NIC. | |
1871 | * And NIC trying to send this descriptor before we tell | |
1872 | * it to start sending this TX queue. | |
1873 | * Other fields are already filled correctly. | |
1874 | */ | |
1875 | wmb(); | |
1876 | flags = TXFLAG_OWN | TXFLAG_INT; | |
1877 | /* | |
1878 | * Set checksum flags while not tso | |
1879 | */ | |
1880 | if (jme_tx_tso(skb, &txdesc->desc1.mss, &flags)) | |
1881 | jme_tx_csum(jme, skb, &flags); | |
1882 | jme_tx_vlan(skb, &txdesc->desc1.vlan, &flags); | |
7f7fd2da | 1883 | jme_map_tx_skb(jme, skb, idx); |
95252236 GFT |
1884 | txdesc->desc1.flags = flags; |
1885 | /* | |
1886 | * Set tx buffer info after telling NIC to send | |
1887 | * For better tx_clean timing | |
1888 | */ | |
1889 | wmb(); | |
1890 | txbi->nr_desc = skb_shinfo(skb)->nr_frags + 2; | |
1891 | txbi->skb = skb; | |
1892 | txbi->len = skb->len; | |
1893 | txbi->start_xmit = jiffies; | |
1894 | if (!txbi->start_xmit) | |
1895 | txbi->start_xmit = (0UL-1); | |
1896 | ||
1897 | return 0; | |
1898 | } | |
1899 | ||
1900 | static void | |
1901 | jme_stop_queue_if_full(struct jme_adapter *jme) | |
1902 | { | |
eacf69a1 | 1903 | struct jme_ring *txring = &(jme->txring[0]); |
95252236 GFT |
1904 | struct jme_buffer_info *txbi = txring->bufinf; |
1905 | int idx = atomic_read(&txring->next_to_clean); | |
1906 | ||
1907 | txbi += idx; | |
1908 | ||
1909 | smp_wmb(); | |
1910 | if (unlikely(atomic_read(&txring->nr_free) < (MAX_SKB_FRAGS+2))) { | |
1911 | netif_stop_queue(jme->dev); | |
f8502ce4 | 1912 | netif_info(jme, tx_queued, jme->dev, "TX Queue Paused.\n"); |
95252236 GFT |
1913 | smp_wmb(); |
1914 | if (atomic_read(&txring->nr_free) | |
1915 | >= (jme->tx_wake_threshold)) { | |
1916 | netif_wake_queue(jme->dev); | |
f8502ce4 | 1917 | netif_info(jme, tx_queued, jme->dev, "TX Queue Fast Waked.\n"); |
95252236 GFT |
1918 | } |
1919 | } | |
1920 | ||
1921 | if (unlikely(txbi->start_xmit && | |
1922 | (jiffies - txbi->start_xmit) >= TX_TIMEOUT && | |
1923 | txbi->skb)) { | |
1924 | netif_stop_queue(jme->dev); | |
f8502ce4 | 1925 | netif_info(jme, tx_queued, jme->dev, "TX Queue Stopped %d@%lu.\n", idx, jiffies); |
95252236 GFT |
1926 | } |
1927 | } | |
1928 | ||
1929 | /* | |
1930 | * This function is already protected by netif_tx_lock() | |
1931 | */ | |
1932 | ||
61357325 | 1933 | static netdev_tx_t |
95252236 GFT |
1934 | jme_start_xmit(struct sk_buff *skb, struct net_device *netdev) |
1935 | { | |
1936 | struct jme_adapter *jme = netdev_priv(netdev); | |
1937 | int idx; | |
1938 | ||
1939 | if (unlikely(jme_expand_header(jme, skb))) { | |
1940 | ++(NET_STAT(jme).tx_dropped); | |
1941 | return NETDEV_TX_OK; | |
1942 | } | |
1943 | ||
1944 | idx = jme_alloc_txdesc(jme, skb); | |
1945 | ||
1946 | if (unlikely(idx < 0)) { | |
1947 | netif_stop_queue(netdev); | |
f8502ce4 | 1948 | netif_err(jme, tx_err, jme->dev, "BUG! Tx ring full when queue awake!\n"); |
95252236 GFT |
1949 | |
1950 | return NETDEV_TX_BUSY; | |
1951 | } | |
1952 | ||
7f7fd2da | 1953 | jme_fill_tx_desc(jme, skb, idx); |
95252236 GFT |
1954 | |
1955 | jwrite32(jme, JME_TXCS, jme->reg_txcs | | |
1956 | TXCS_SELECT_QUEUE0 | | |
1957 | TXCS_QUEUE0S | | |
1958 | TXCS_ENABLE); | |
95252236 GFT |
1959 | |
1960 | tx_dbg(jme, "xmit: %d+%d@%lu\n", idx, | |
1961 | skb_shinfo(skb)->nr_frags + 2, | |
1962 | jiffies); | |
1963 | jme_stop_queue_if_full(jme); | |
1964 | ||
1965 | return NETDEV_TX_OK; | |
1966 | } | |
1967 | ||
1968 | static int | |
1969 | jme_set_macaddr(struct net_device *netdev, void *p) | |
1970 | { | |
1971 | struct jme_adapter *jme = netdev_priv(netdev); | |
1972 | struct sockaddr *addr = p; | |
1973 | u32 val; | |
1974 | ||
1975 | if (netif_running(netdev)) | |
1976 | return -EBUSY; | |
1977 | ||
1978 | spin_lock_bh(&jme->macaddr_lock); | |
1979 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
1980 | ||
1981 | val = (addr->sa_data[3] & 0xff) << 24 | | |
1982 | (addr->sa_data[2] & 0xff) << 16 | | |
1983 | (addr->sa_data[1] & 0xff) << 8 | | |
1984 | (addr->sa_data[0] & 0xff); | |
1985 | jwrite32(jme, JME_RXUMA_LO, val); | |
1986 | val = (addr->sa_data[5] & 0xff) << 8 | | |
1987 | (addr->sa_data[4] & 0xff); | |
1988 | jwrite32(jme, JME_RXUMA_HI, val); | |
1989 | spin_unlock_bh(&jme->macaddr_lock); | |
1990 | ||
1991 | return 0; | |
1992 | } | |
1993 | ||
1994 | static void | |
1995 | jme_set_multi(struct net_device *netdev) | |
1996 | { | |
1997 | struct jme_adapter *jme = netdev_priv(netdev); | |
1998 | u32 mc_hash[2] = {}; | |
95252236 GFT |
1999 | |
2000 | spin_lock_bh(&jme->rxmcs_lock); | |
2001 | ||
2002 | jme->reg_rxmcs |= RXMCS_BRDFRAME | RXMCS_UNIFRAME; | |
2003 | ||
2004 | if (netdev->flags & IFF_PROMISC) { | |
2005 | jme->reg_rxmcs |= RXMCS_ALLFRAME; | |
2006 | } else if (netdev->flags & IFF_ALLMULTI) { | |
2007 | jme->reg_rxmcs |= RXMCS_ALLMULFRAME; | |
2008 | } else if (netdev->flags & IFF_MULTICAST) { | |
22bedad3 | 2009 | struct netdev_hw_addr *ha; |
95252236 GFT |
2010 | int bit_nr; |
2011 | ||
2012 | jme->reg_rxmcs |= RXMCS_MULFRAME | RXMCS_MULFILTERED; | |
22bedad3 JP |
2013 | netdev_for_each_mc_addr(ha, netdev) { |
2014 | bit_nr = ether_crc(ETH_ALEN, ha->addr) & 0x3F; | |
95252236 GFT |
2015 | mc_hash[bit_nr >> 5] |= 1 << (bit_nr & 0x1F); |
2016 | } | |
2017 | ||
2018 | jwrite32(jme, JME_RXMCHT_LO, mc_hash[0]); | |
2019 | jwrite32(jme, JME_RXMCHT_HI, mc_hash[1]); | |
2020 | } | |
2021 | ||
2022 | wmb(); | |
2023 | jwrite32(jme, JME_RXMCS, jme->reg_rxmcs); | |
2024 | ||
2025 | spin_unlock_bh(&jme->rxmcs_lock); | |
2026 | } | |
2027 | ||
2028 | static int | |
2029 | jme_change_mtu(struct net_device *netdev, int new_mtu) | |
2030 | { | |
2031 | struct jme_adapter *jme = netdev_priv(netdev); | |
2032 | ||
2033 | if (new_mtu == jme->old_mtu) | |
2034 | return 0; | |
2035 | ||
2036 | if (((new_mtu + ETH_HLEN) > MAX_ETHERNET_JUMBO_PACKET_SIZE) || | |
2037 | ((new_mtu) < IPV6_MIN_MTU)) | |
2038 | return -EINVAL; | |
2039 | ||
2040 | if (new_mtu > 4000) { | |
2041 | jme->reg_rxcs &= ~RXCS_FIFOTHNP; | |
2042 | jme->reg_rxcs |= RXCS_FIFOTHNP_64QW; | |
2043 | jme_restart_rx_engine(jme); | |
2044 | } else { | |
2045 | jme->reg_rxcs &= ~RXCS_FIFOTHNP; | |
2046 | jme->reg_rxcs |= RXCS_FIFOTHNP_128QW; | |
2047 | jme_restart_rx_engine(jme); | |
2048 | } | |
2049 | ||
2050 | if (new_mtu > 1900) { | |
2051 | netdev->features &= ~(NETIF_F_HW_CSUM | | |
2052 | NETIF_F_TSO | | |
2053 | NETIF_F_TSO6); | |
2054 | } else { | |
2055 | if (test_bit(JME_FLAG_TXCSUM, &jme->flags)) | |
2056 | netdev->features |= NETIF_F_HW_CSUM; | |
2057 | if (test_bit(JME_FLAG_TSO, &jme->flags)) | |
2058 | netdev->features |= NETIF_F_TSO | NETIF_F_TSO6; | |
2059 | } | |
2060 | ||
2061 | netdev->mtu = new_mtu; | |
2062 | jme_reset_link(jme); | |
2063 | ||
2064 | return 0; | |
2065 | } | |
2066 | ||
2067 | static void | |
2068 | jme_tx_timeout(struct net_device *netdev) | |
2069 | { | |
2070 | struct jme_adapter *jme = netdev_priv(netdev); | |
2071 | ||
2072 | jme->phylink = 0; | |
2073 | jme_reset_phy_processor(jme); | |
2074 | if (test_bit(JME_FLAG_SSET, &jme->flags)) | |
2075 | jme_set_settings(netdev, &jme->old_ecmd); | |
2076 | ||
2077 | /* | |
2078 | * Force to Reset the link again | |
2079 | */ | |
2080 | jme_reset_link(jme); | |
2081 | } | |
2082 | ||
bf5e5360 GFT |
2083 | static inline void jme_pause_rx(struct jme_adapter *jme) |
2084 | { | |
2085 | atomic_dec(&jme->link_changing); | |
2086 | ||
2087 | jme_set_rx_pcc(jme, PCC_OFF); | |
2088 | if (test_bit(JME_FLAG_POLL, &jme->flags)) { | |
2089 | JME_NAPI_DISABLE(jme); | |
2090 | } else { | |
2091 | tasklet_disable(&jme->rxclean_task); | |
2092 | tasklet_disable(&jme->rxempty_task); | |
2093 | } | |
2094 | } | |
2095 | ||
2096 | static inline void jme_resume_rx(struct jme_adapter *jme) | |
2097 | { | |
2098 | struct dynpcc_info *dpi = &(jme->dpi); | |
2099 | ||
2100 | if (test_bit(JME_FLAG_POLL, &jme->flags)) { | |
2101 | JME_NAPI_ENABLE(jme); | |
2102 | } else { | |
2103 | tasklet_hi_enable(&jme->rxclean_task); | |
2104 | tasklet_hi_enable(&jme->rxempty_task); | |
2105 | } | |
2106 | dpi->cur = PCC_P1; | |
2107 | dpi->attempt = PCC_P1; | |
2108 | dpi->cnt = 0; | |
2109 | jme_set_rx_pcc(jme, PCC_P1); | |
2110 | ||
2111 | atomic_inc(&jme->link_changing); | |
2112 | } | |
2113 | ||
95252236 GFT |
2114 | static void |
2115 | jme_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp) | |
2116 | { | |
2117 | struct jme_adapter *jme = netdev_priv(netdev); | |
2118 | ||
bf5e5360 | 2119 | jme_pause_rx(jme); |
95252236 | 2120 | jme->vlgrp = grp; |
bf5e5360 | 2121 | jme_resume_rx(jme); |
95252236 GFT |
2122 | } |
2123 | ||
2124 | static void | |
2125 | jme_get_drvinfo(struct net_device *netdev, | |
2126 | struct ethtool_drvinfo *info) | |
2127 | { | |
2128 | struct jme_adapter *jme = netdev_priv(netdev); | |
2129 | ||
2130 | strcpy(info->driver, DRV_NAME); | |
2131 | strcpy(info->version, DRV_VERSION); | |
2132 | strcpy(info->bus_info, pci_name(jme->pdev)); | |
2133 | } | |
2134 | ||
2135 | static int | |
2136 | jme_get_regs_len(struct net_device *netdev) | |
2137 | { | |
2138 | return JME_REG_LEN; | |
2139 | } | |
2140 | ||
2141 | static void | |
2142 | mmapio_memcpy(struct jme_adapter *jme, u32 *p, u32 reg, int len) | |
2143 | { | |
2144 | int i; | |
2145 | ||
2146 | for (i = 0 ; i < len ; i += 4) | |
2147 | p[i >> 2] = jread32(jme, reg + i); | |
2148 | } | |
2149 | ||
2150 | static void | |
2151 | mdio_memcpy(struct jme_adapter *jme, u32 *p, int reg_nr) | |
2152 | { | |
2153 | int i; | |
2154 | u16 *p16 = (u16 *)p; | |
2155 | ||
2156 | for (i = 0 ; i < reg_nr ; ++i) | |
2157 | p16[i] = jme_mdio_read(jme->dev, jme->mii_if.phy_id, i); | |
2158 | } | |
2159 | ||
2160 | static void | |
2161 | jme_get_regs(struct net_device *netdev, struct ethtool_regs *regs, void *p) | |
2162 | { | |
2163 | struct jme_adapter *jme = netdev_priv(netdev); | |
2164 | u32 *p32 = (u32 *)p; | |
2165 | ||
2166 | memset(p, 0xFF, JME_REG_LEN); | |
2167 | ||
2168 | regs->version = 1; | |
2169 | mmapio_memcpy(jme, p32, JME_MAC, JME_MAC_LEN); | |
2170 | ||
2171 | p32 += 0x100 >> 2; | |
2172 | mmapio_memcpy(jme, p32, JME_PHY, JME_PHY_LEN); | |
2173 | ||
2174 | p32 += 0x100 >> 2; | |
2175 | mmapio_memcpy(jme, p32, JME_MISC, JME_MISC_LEN); | |
2176 | ||
2177 | p32 += 0x100 >> 2; | |
2178 | mmapio_memcpy(jme, p32, JME_RSS, JME_RSS_LEN); | |
2179 | ||
2180 | p32 += 0x100 >> 2; | |
2181 | mdio_memcpy(jme, p32, JME_PHY_REG_NR); | |
2182 | } | |
2183 | ||
2184 | static int | |
2185 | jme_get_coalesce(struct net_device *netdev, struct ethtool_coalesce *ecmd) | |
2186 | { | |
2187 | struct jme_adapter *jme = netdev_priv(netdev); | |
2188 | ||
2189 | ecmd->tx_coalesce_usecs = PCC_TX_TO; | |
2190 | ecmd->tx_max_coalesced_frames = PCC_TX_CNT; | |
2191 | ||
2192 | if (test_bit(JME_FLAG_POLL, &jme->flags)) { | |
2193 | ecmd->use_adaptive_rx_coalesce = false; | |
2194 | ecmd->rx_coalesce_usecs = 0; | |
2195 | ecmd->rx_max_coalesced_frames = 0; | |
2196 | return 0; | |
2197 | } | |
2198 | ||
2199 | ecmd->use_adaptive_rx_coalesce = true; | |
2200 | ||
2201 | switch (jme->dpi.cur) { | |
2202 | case PCC_P1: | |
2203 | ecmd->rx_coalesce_usecs = PCC_P1_TO; | |
2204 | ecmd->rx_max_coalesced_frames = PCC_P1_CNT; | |
2205 | break; | |
2206 | case PCC_P2: | |
2207 | ecmd->rx_coalesce_usecs = PCC_P2_TO; | |
2208 | ecmd->rx_max_coalesced_frames = PCC_P2_CNT; | |
2209 | break; | |
2210 | case PCC_P3: | |
2211 | ecmd->rx_coalesce_usecs = PCC_P3_TO; | |
2212 | ecmd->rx_max_coalesced_frames = PCC_P3_CNT; | |
2213 | break; | |
2214 | default: | |
2215 | break; | |
2216 | } | |
2217 | ||
2218 | return 0; | |
2219 | } | |
2220 | ||
2221 | static int | |
2222 | jme_set_coalesce(struct net_device *netdev, struct ethtool_coalesce *ecmd) | |
2223 | { | |
2224 | struct jme_adapter *jme = netdev_priv(netdev); | |
2225 | struct dynpcc_info *dpi = &(jme->dpi); | |
2226 | ||
2227 | if (netif_running(netdev)) | |
2228 | return -EBUSY; | |
2229 | ||
8e95a202 JP |
2230 | if (ecmd->use_adaptive_rx_coalesce && |
2231 | test_bit(JME_FLAG_POLL, &jme->flags)) { | |
95252236 GFT |
2232 | clear_bit(JME_FLAG_POLL, &jme->flags); |
2233 | jme->jme_rx = netif_rx; | |
2234 | jme->jme_vlan_rx = vlan_hwaccel_rx; | |
2235 | dpi->cur = PCC_P1; | |
2236 | dpi->attempt = PCC_P1; | |
2237 | dpi->cnt = 0; | |
2238 | jme_set_rx_pcc(jme, PCC_P1); | |
2239 | jme_interrupt_mode(jme); | |
8e95a202 JP |
2240 | } else if (!(ecmd->use_adaptive_rx_coalesce) && |
2241 | !(test_bit(JME_FLAG_POLL, &jme->flags))) { | |
95252236 GFT |
2242 | set_bit(JME_FLAG_POLL, &jme->flags); |
2243 | jme->jme_rx = netif_receive_skb; | |
2244 | jme->jme_vlan_rx = vlan_hwaccel_receive_skb; | |
2245 | jme_interrupt_mode(jme); | |
2246 | } | |
2247 | ||
2248 | return 0; | |
2249 | } | |
2250 | ||
2251 | static void | |
2252 | jme_get_pauseparam(struct net_device *netdev, | |
2253 | struct ethtool_pauseparam *ecmd) | |
2254 | { | |
2255 | struct jme_adapter *jme = netdev_priv(netdev); | |
2256 | u32 val; | |
2257 | ||
2258 | ecmd->tx_pause = (jme->reg_txpfc & TXPFC_PF_EN) != 0; | |
2259 | ecmd->rx_pause = (jme->reg_rxmcs & RXMCS_FLOWCTRL) != 0; | |
2260 | ||
2261 | spin_lock_bh(&jme->phy_lock); | |
2262 | val = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_ADVERTISE); | |
2263 | spin_unlock_bh(&jme->phy_lock); | |
2264 | ||
2265 | ecmd->autoneg = | |
2266 | (val & (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM)) != 0; | |
2267 | } | |
2268 | ||
2269 | static int | |
2270 | jme_set_pauseparam(struct net_device *netdev, | |
2271 | struct ethtool_pauseparam *ecmd) | |
2272 | { | |
2273 | struct jme_adapter *jme = netdev_priv(netdev); | |
2274 | u32 val; | |
2275 | ||
2276 | if (((jme->reg_txpfc & TXPFC_PF_EN) != 0) ^ | |
2277 | (ecmd->tx_pause != 0)) { | |
2278 | ||
2279 | if (ecmd->tx_pause) | |
2280 | jme->reg_txpfc |= TXPFC_PF_EN; | |
2281 | else | |
2282 | jme->reg_txpfc &= ~TXPFC_PF_EN; | |
2283 | ||
2284 | jwrite32(jme, JME_TXPFC, jme->reg_txpfc); | |
2285 | } | |
2286 | ||
2287 | spin_lock_bh(&jme->rxmcs_lock); | |
2288 | if (((jme->reg_rxmcs & RXMCS_FLOWCTRL) != 0) ^ | |
2289 | (ecmd->rx_pause != 0)) { | |
2290 | ||
2291 | if (ecmd->rx_pause) | |
2292 | jme->reg_rxmcs |= RXMCS_FLOWCTRL; | |
2293 | else | |
2294 | jme->reg_rxmcs &= ~RXMCS_FLOWCTRL; | |
2295 | ||
2296 | jwrite32(jme, JME_RXMCS, jme->reg_rxmcs); | |
2297 | } | |
2298 | spin_unlock_bh(&jme->rxmcs_lock); | |
2299 | ||
2300 | spin_lock_bh(&jme->phy_lock); | |
2301 | val = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_ADVERTISE); | |
2302 | if (((val & (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM)) != 0) ^ | |
2303 | (ecmd->autoneg != 0)) { | |
2304 | ||
2305 | if (ecmd->autoneg) | |
2306 | val |= (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM); | |
2307 | else | |
2308 | val &= ~(ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM); | |
2309 | ||
2310 | jme_mdio_write(jme->dev, jme->mii_if.phy_id, | |
2311 | MII_ADVERTISE, val); | |
2312 | } | |
2313 | spin_unlock_bh(&jme->phy_lock); | |
2314 | ||
2315 | return 0; | |
2316 | } | |
2317 | ||
2318 | static void | |
2319 | jme_get_wol(struct net_device *netdev, | |
2320 | struct ethtool_wolinfo *wol) | |
2321 | { | |
2322 | struct jme_adapter *jme = netdev_priv(netdev); | |
2323 | ||
2324 | wol->supported = WAKE_MAGIC | WAKE_PHY; | |
2325 | ||
2326 | wol->wolopts = 0; | |
2327 | ||
2328 | if (jme->reg_pmcs & (PMCS_LFEN | PMCS_LREN)) | |
2329 | wol->wolopts |= WAKE_PHY; | |
2330 | ||
2331 | if (jme->reg_pmcs & PMCS_MFEN) | |
2332 | wol->wolopts |= WAKE_MAGIC; | |
2333 | ||
2334 | } | |
2335 | ||
2336 | static int | |
2337 | jme_set_wol(struct net_device *netdev, | |
2338 | struct ethtool_wolinfo *wol) | |
2339 | { | |
2340 | struct jme_adapter *jme = netdev_priv(netdev); | |
2341 | ||
2342 | if (wol->wolopts & (WAKE_MAGICSECURE | | |
2343 | WAKE_UCAST | | |
2344 | WAKE_MCAST | | |
2345 | WAKE_BCAST | | |
2346 | WAKE_ARP)) | |
2347 | return -EOPNOTSUPP; | |
2348 | ||
2349 | jme->reg_pmcs = 0; | |
2350 | ||
2351 | if (wol->wolopts & WAKE_PHY) | |
2352 | jme->reg_pmcs |= PMCS_LFEN | PMCS_LREN; | |
2353 | ||
2354 | if (wol->wolopts & WAKE_MAGIC) | |
2355 | jme->reg_pmcs |= PMCS_MFEN; | |
2356 | ||
2357 | jwrite32(jme, JME_PMCS, jme->reg_pmcs); | |
2358 | ||
2359 | return 0; | |
2360 | } | |
2361 | ||
2362 | static int | |
2363 | jme_get_settings(struct net_device *netdev, | |
2364 | struct ethtool_cmd *ecmd) | |
2365 | { | |
2366 | struct jme_adapter *jme = netdev_priv(netdev); | |
2367 | int rc; | |
2368 | ||
2369 | spin_lock_bh(&jme->phy_lock); | |
2370 | rc = mii_ethtool_gset(&(jme->mii_if), ecmd); | |
2371 | spin_unlock_bh(&jme->phy_lock); | |
2372 | return rc; | |
2373 | } | |
2374 | ||
2375 | static int | |
2376 | jme_set_settings(struct net_device *netdev, | |
2377 | struct ethtool_cmd *ecmd) | |
2378 | { | |
2379 | struct jme_adapter *jme = netdev_priv(netdev); | |
2380 | int rc, fdc = 0; | |
2381 | ||
2382 | if (ecmd->speed == SPEED_1000 && ecmd->autoneg != AUTONEG_ENABLE) | |
2383 | return -EINVAL; | |
2384 | ||
2385 | if (jme->mii_if.force_media && | |
2386 | ecmd->autoneg != AUTONEG_ENABLE && | |
2387 | (jme->mii_if.full_duplex != ecmd->duplex)) | |
2388 | fdc = 1; | |
2389 | ||
2390 | spin_lock_bh(&jme->phy_lock); | |
2391 | rc = mii_ethtool_sset(&(jme->mii_if), ecmd); | |
2392 | spin_unlock_bh(&jme->phy_lock); | |
2393 | ||
2394 | if (!rc && fdc) | |
2395 | jme_reset_link(jme); | |
2396 | ||
2397 | if (!rc) { | |
2398 | set_bit(JME_FLAG_SSET, &jme->flags); | |
2399 | jme->old_ecmd = *ecmd; | |
2400 | } | |
2401 | ||
2402 | return rc; | |
2403 | } | |
2404 | ||
2405 | static u32 | |
2406 | jme_get_link(struct net_device *netdev) | |
2407 | { | |
2408 | struct jme_adapter *jme = netdev_priv(netdev); | |
2409 | return jread32(jme, JME_PHY_LINK) & PHY_LINK_UP; | |
2410 | } | |
2411 | ||
2412 | static u32 | |
2413 | jme_get_msglevel(struct net_device *netdev) | |
2414 | { | |
2415 | struct jme_adapter *jme = netdev_priv(netdev); | |
2416 | return jme->msg_enable; | |
2417 | } | |
2418 | ||
2419 | static void | |
2420 | jme_set_msglevel(struct net_device *netdev, u32 value) | |
2421 | { | |
2422 | struct jme_adapter *jme = netdev_priv(netdev); | |
2423 | jme->msg_enable = value; | |
2424 | } | |
2425 | ||
2426 | static u32 | |
2427 | jme_get_rx_csum(struct net_device *netdev) | |
2428 | { | |
2429 | struct jme_adapter *jme = netdev_priv(netdev); | |
2430 | return jme->reg_rxmcs & RXMCS_CHECKSUM; | |
2431 | } | |
2432 | ||
2433 | static int | |
2434 | jme_set_rx_csum(struct net_device *netdev, u32 on) | |
2435 | { | |
2436 | struct jme_adapter *jme = netdev_priv(netdev); | |
2437 | ||
2438 | spin_lock_bh(&jme->rxmcs_lock); | |
2439 | if (on) | |
2440 | jme->reg_rxmcs |= RXMCS_CHECKSUM; | |
2441 | else | |
2442 | jme->reg_rxmcs &= ~RXMCS_CHECKSUM; | |
2443 | jwrite32(jme, JME_RXMCS, jme->reg_rxmcs); | |
2444 | spin_unlock_bh(&jme->rxmcs_lock); | |
2445 | ||
2446 | return 0; | |
2447 | } | |
2448 | ||
2449 | static int | |
2450 | jme_set_tx_csum(struct net_device *netdev, u32 on) | |
2451 | { | |
2452 | struct jme_adapter *jme = netdev_priv(netdev); | |
2453 | ||
2454 | if (on) { | |
2455 | set_bit(JME_FLAG_TXCSUM, &jme->flags); | |
2456 | if (netdev->mtu <= 1900) | |
2457 | netdev->features |= NETIF_F_HW_CSUM; | |
2458 | } else { | |
2459 | clear_bit(JME_FLAG_TXCSUM, &jme->flags); | |
2460 | netdev->features &= ~NETIF_F_HW_CSUM; | |
2461 | } | |
2462 | ||
2463 | return 0; | |
2464 | } | |
2465 | ||
2466 | static int | |
2467 | jme_set_tso(struct net_device *netdev, u32 on) | |
2468 | { | |
2469 | struct jme_adapter *jme = netdev_priv(netdev); | |
2470 | ||
2471 | if (on) { | |
2472 | set_bit(JME_FLAG_TSO, &jme->flags); | |
2473 | if (netdev->mtu <= 1900) | |
2474 | netdev->features |= NETIF_F_TSO | NETIF_F_TSO6; | |
2475 | } else { | |
2476 | clear_bit(JME_FLAG_TSO, &jme->flags); | |
2477 | netdev->features &= ~(NETIF_F_TSO | NETIF_F_TSO6); | |
2478 | } | |
2479 | ||
2480 | return 0; | |
2481 | } | |
2482 | ||
2483 | static int | |
2484 | jme_nway_reset(struct net_device *netdev) | |
2485 | { | |
2486 | struct jme_adapter *jme = netdev_priv(netdev); | |
2487 | jme_restart_an(jme); | |
2488 | return 0; | |
2489 | } | |
2490 | ||
2491 | static u8 | |
2492 | jme_smb_read(struct jme_adapter *jme, unsigned int addr) | |
2493 | { | |
2494 | u32 val; | |
2495 | int to; | |
2496 | ||
2497 | val = jread32(jme, JME_SMBCSR); | |
2498 | to = JME_SMB_BUSY_TIMEOUT; | |
2499 | while ((val & SMBCSR_BUSY) && --to) { | |
2500 | msleep(1); | |
2501 | val = jread32(jme, JME_SMBCSR); | |
2502 | } | |
2503 | if (!to) { | |
f8502ce4 | 2504 | netif_err(jme, hw, jme->dev, "SMB Bus Busy.\n"); |
95252236 GFT |
2505 | return 0xFF; |
2506 | } | |
2507 | ||
2508 | jwrite32(jme, JME_SMBINTF, | |
2509 | ((addr << SMBINTF_HWADDR_SHIFT) & SMBINTF_HWADDR) | | |
2510 | SMBINTF_HWRWN_READ | | |
2511 | SMBINTF_HWCMD); | |
2512 | ||
2513 | val = jread32(jme, JME_SMBINTF); | |
2514 | to = JME_SMB_BUSY_TIMEOUT; | |
2515 | while ((val & SMBINTF_HWCMD) && --to) { | |
2516 | msleep(1); | |
2517 | val = jread32(jme, JME_SMBINTF); | |
2518 | } | |
2519 | if (!to) { | |
f8502ce4 | 2520 | netif_err(jme, hw, jme->dev, "SMB Bus Busy.\n"); |
95252236 GFT |
2521 | return 0xFF; |
2522 | } | |
2523 | ||
2524 | return (val & SMBINTF_HWDATR) >> SMBINTF_HWDATR_SHIFT; | |
2525 | } | |
2526 | ||
2527 | static void | |
2528 | jme_smb_write(struct jme_adapter *jme, unsigned int addr, u8 data) | |
2529 | { | |
2530 | u32 val; | |
2531 | int to; | |
2532 | ||
2533 | val = jread32(jme, JME_SMBCSR); | |
2534 | to = JME_SMB_BUSY_TIMEOUT; | |
2535 | while ((val & SMBCSR_BUSY) && --to) { | |
2536 | msleep(1); | |
2537 | val = jread32(jme, JME_SMBCSR); | |
2538 | } | |
2539 | if (!to) { | |
f8502ce4 | 2540 | netif_err(jme, hw, jme->dev, "SMB Bus Busy.\n"); |
95252236 GFT |
2541 | return; |
2542 | } | |
2543 | ||
2544 | jwrite32(jme, JME_SMBINTF, | |
2545 | ((data << SMBINTF_HWDATW_SHIFT) & SMBINTF_HWDATW) | | |
2546 | ((addr << SMBINTF_HWADDR_SHIFT) & SMBINTF_HWADDR) | | |
2547 | SMBINTF_HWRWN_WRITE | | |
2548 | SMBINTF_HWCMD); | |
2549 | ||
2550 | val = jread32(jme, JME_SMBINTF); | |
2551 | to = JME_SMB_BUSY_TIMEOUT; | |
2552 | while ((val & SMBINTF_HWCMD) && --to) { | |
2553 | msleep(1); | |
2554 | val = jread32(jme, JME_SMBINTF); | |
2555 | } | |
2556 | if (!to) { | |
f8502ce4 | 2557 | netif_err(jme, hw, jme->dev, "SMB Bus Busy.\n"); |
95252236 GFT |
2558 | return; |
2559 | } | |
2560 | ||
2561 | mdelay(2); | |
2562 | } | |
2563 | ||
2564 | static int | |
2565 | jme_get_eeprom_len(struct net_device *netdev) | |
2566 | { | |
2567 | struct jme_adapter *jme = netdev_priv(netdev); | |
2568 | u32 val; | |
2569 | val = jread32(jme, JME_SMBCSR); | |
2570 | return (val & SMBCSR_EEPROMD) ? JME_SMB_LEN : 0; | |
2571 | } | |
2572 | ||
2573 | static int | |
2574 | jme_get_eeprom(struct net_device *netdev, | |
2575 | struct ethtool_eeprom *eeprom, u8 *data) | |
2576 | { | |
2577 | struct jme_adapter *jme = netdev_priv(netdev); | |
2578 | int i, offset = eeprom->offset, len = eeprom->len; | |
2579 | ||
2580 | /* | |
2581 | * ethtool will check the boundary for us | |
2582 | */ | |
2583 | eeprom->magic = JME_EEPROM_MAGIC; | |
2584 | for (i = 0 ; i < len ; ++i) | |
2585 | data[i] = jme_smb_read(jme, i + offset); | |
2586 | ||
2587 | return 0; | |
2588 | } | |
2589 | ||
2590 | static int | |
2591 | jme_set_eeprom(struct net_device *netdev, | |
2592 | struct ethtool_eeprom *eeprom, u8 *data) | |
2593 | { | |
2594 | struct jme_adapter *jme = netdev_priv(netdev); | |
2595 | int i, offset = eeprom->offset, len = eeprom->len; | |
2596 | ||
2597 | if (eeprom->magic != JME_EEPROM_MAGIC) | |
2598 | return -EINVAL; | |
2599 | ||
2600 | /* | |
2601 | * ethtool will check the boundary for us | |
2602 | */ | |
2603 | for (i = 0 ; i < len ; ++i) | |
2604 | jme_smb_write(jme, i + offset, data[i]); | |
2605 | ||
2606 | return 0; | |
2607 | } | |
2608 | ||
2609 | static const struct ethtool_ops jme_ethtool_ops = { | |
2610 | .get_drvinfo = jme_get_drvinfo, | |
2611 | .get_regs_len = jme_get_regs_len, | |
2612 | .get_regs = jme_get_regs, | |
2613 | .get_coalesce = jme_get_coalesce, | |
2614 | .set_coalesce = jme_set_coalesce, | |
2615 | .get_pauseparam = jme_get_pauseparam, | |
2616 | .set_pauseparam = jme_set_pauseparam, | |
2617 | .get_wol = jme_get_wol, | |
2618 | .set_wol = jme_set_wol, | |
2619 | .get_settings = jme_get_settings, | |
2620 | .set_settings = jme_set_settings, | |
2621 | .get_link = jme_get_link, | |
2622 | .get_msglevel = jme_get_msglevel, | |
2623 | .set_msglevel = jme_set_msglevel, | |
2624 | .get_rx_csum = jme_get_rx_csum, | |
2625 | .set_rx_csum = jme_set_rx_csum, | |
2626 | .set_tx_csum = jme_set_tx_csum, | |
2627 | .set_tso = jme_set_tso, | |
2628 | .set_sg = ethtool_op_set_sg, | |
2629 | .nway_reset = jme_nway_reset, | |
2630 | .get_eeprom_len = jme_get_eeprom_len, | |
2631 | .get_eeprom = jme_get_eeprom, | |
2632 | .set_eeprom = jme_set_eeprom, | |
2633 | }; | |
2634 | ||
2635 | static int | |
2636 | jme_pci_dma64(struct pci_dev *pdev) | |
2637 | { | |
814c01dc | 2638 | if (pdev->device == PCI_DEVICE_ID_JMICRON_JMC250 && |
e930438c YH |
2639 | !pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) |
2640 | if (!pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64))) | |
814c01dc GFT |
2641 | return 1; |
2642 | ||
2643 | if (pdev->device == PCI_DEVICE_ID_JMICRON_JMC250 && | |
e930438c YH |
2644 | !pci_set_dma_mask(pdev, DMA_BIT_MASK(40))) |
2645 | if (!pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(40))) | |
814c01dc GFT |
2646 | return 1; |
2647 | ||
284901a9 YH |
2648 | if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) |
2649 | if (!pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32))) | |
95252236 GFT |
2650 | return 0; |
2651 | ||
2652 | return -1; | |
2653 | } | |
2654 | ||
2655 | static inline void | |
2656 | jme_phy_init(struct jme_adapter *jme) | |
2657 | { | |
2658 | u16 reg26; | |
2659 | ||
2660 | reg26 = jme_mdio_read(jme->dev, jme->mii_if.phy_id, 26); | |
2661 | jme_mdio_write(jme->dev, jme->mii_if.phy_id, 26, reg26 | 0x1000); | |
2662 | } | |
2663 | ||
2664 | static inline void | |
2665 | jme_check_hw_ver(struct jme_adapter *jme) | |
2666 | { | |
2667 | u32 chipmode; | |
2668 | ||
2669 | chipmode = jread32(jme, JME_CHIPMODE); | |
2670 | ||
2671 | jme->fpgaver = (chipmode & CM_FPGAVER_MASK) >> CM_FPGAVER_SHIFT; | |
2672 | jme->chiprev = (chipmode & CM_CHIPREV_MASK) >> CM_CHIPREV_SHIFT; | |
2673 | } | |
2674 | ||
e48714ba SH |
2675 | static const struct net_device_ops jme_netdev_ops = { |
2676 | .ndo_open = jme_open, | |
2677 | .ndo_stop = jme_close, | |
2678 | .ndo_validate_addr = eth_validate_addr, | |
2679 | .ndo_start_xmit = jme_start_xmit, | |
2680 | .ndo_set_mac_address = jme_set_macaddr, | |
2681 | .ndo_set_multicast_list = jme_set_multi, | |
2682 | .ndo_change_mtu = jme_change_mtu, | |
2683 | .ndo_tx_timeout = jme_tx_timeout, | |
2684 | .ndo_vlan_rx_register = jme_vlan_rx_register, | |
2685 | }; | |
2686 | ||
95252236 GFT |
2687 | static int __devinit |
2688 | jme_init_one(struct pci_dev *pdev, | |
2689 | const struct pci_device_id *ent) | |
2690 | { | |
2691 | int rc = 0, using_dac, i; | |
2692 | struct net_device *netdev; | |
2693 | struct jme_adapter *jme; | |
2694 | u16 bmcr, bmsr; | |
2695 | u32 apmc; | |
2696 | ||
2697 | /* | |
2698 | * set up PCI device basics | |
2699 | */ | |
2700 | rc = pci_enable_device(pdev); | |
2701 | if (rc) { | |
2702 | jeprintk(pdev, "Cannot enable PCI device.\n"); | |
2703 | goto err_out; | |
2704 | } | |
2705 | ||
2706 | using_dac = jme_pci_dma64(pdev); | |
2707 | if (using_dac < 0) { | |
2708 | jeprintk(pdev, "Cannot set PCI DMA Mask.\n"); | |
2709 | rc = -EIO; | |
2710 | goto err_out_disable_pdev; | |
2711 | } | |
2712 | ||
2713 | if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) { | |
2714 | jeprintk(pdev, "No PCI resource region found.\n"); | |
2715 | rc = -ENOMEM; | |
2716 | goto err_out_disable_pdev; | |
2717 | } | |
2718 | ||
2719 | rc = pci_request_regions(pdev, DRV_NAME); | |
2720 | if (rc) { | |
2721 | jeprintk(pdev, "Cannot obtain PCI resource region.\n"); | |
2722 | goto err_out_disable_pdev; | |
2723 | } | |
2724 | ||
2725 | pci_set_master(pdev); | |
2726 | ||
2727 | /* | |
2728 | * alloc and init net device | |
2729 | */ | |
2730 | netdev = alloc_etherdev(sizeof(*jme)); | |
2731 | if (!netdev) { | |
2732 | jeprintk(pdev, "Cannot allocate netdev structure.\n"); | |
2733 | rc = -ENOMEM; | |
2734 | goto err_out_release_regions; | |
2735 | } | |
e48714ba | 2736 | netdev->netdev_ops = &jme_netdev_ops; |
95252236 | 2737 | netdev->ethtool_ops = &jme_ethtool_ops; |
95252236 | 2738 | netdev->watchdog_timeo = TX_TIMEOUT; |
95252236 GFT |
2739 | netdev->features = NETIF_F_HW_CSUM | |
2740 | NETIF_F_SG | | |
2741 | NETIF_F_TSO | | |
2742 | NETIF_F_TSO6 | | |
2743 | NETIF_F_HW_VLAN_TX | | |
2744 | NETIF_F_HW_VLAN_RX; | |
2745 | if (using_dac) | |
2746 | netdev->features |= NETIF_F_HIGHDMA; | |
2747 | ||
2748 | SET_NETDEV_DEV(netdev, &pdev->dev); | |
2749 | pci_set_drvdata(pdev, netdev); | |
2750 | ||
2751 | /* | |
2752 | * init adapter info | |
2753 | */ | |
2754 | jme = netdev_priv(netdev); | |
2755 | jme->pdev = pdev; | |
2756 | jme->dev = netdev; | |
2757 | jme->jme_rx = netif_rx; | |
2758 | jme->jme_vlan_rx = vlan_hwaccel_rx; | |
2759 | jme->old_mtu = netdev->mtu = 1500; | |
2760 | jme->phylink = 0; | |
2761 | jme->tx_ring_size = 1 << 10; | |
2762 | jme->tx_ring_mask = jme->tx_ring_size - 1; | |
2763 | jme->tx_wake_threshold = 1 << 9; | |
2764 | jme->rx_ring_size = 1 << 9; | |
2765 | jme->rx_ring_mask = jme->rx_ring_size - 1; | |
2766 | jme->msg_enable = JME_DEF_MSG_ENABLE; | |
2767 | jme->regs = ioremap(pci_resource_start(pdev, 0), | |
2768 | pci_resource_len(pdev, 0)); | |
2769 | if (!(jme->regs)) { | |
2770 | jeprintk(pdev, "Mapping PCI resource region error.\n"); | |
2771 | rc = -ENOMEM; | |
2772 | goto err_out_free_netdev; | |
2773 | } | |
95252236 GFT |
2774 | |
2775 | if (no_pseudohp) { | |
2776 | apmc = jread32(jme, JME_APMC) & ~JME_APMC_PSEUDO_HP_EN; | |
2777 | jwrite32(jme, JME_APMC, apmc); | |
2778 | } else if (force_pseudohp) { | |
2779 | apmc = jread32(jme, JME_APMC) | JME_APMC_PSEUDO_HP_EN; | |
2780 | jwrite32(jme, JME_APMC, apmc); | |
2781 | } | |
2782 | ||
2783 | NETIF_NAPI_SET(netdev, &jme->napi, jme_poll, jme->rx_ring_size >> 2) | |
2784 | ||
2785 | spin_lock_init(&jme->phy_lock); | |
2786 | spin_lock_init(&jme->macaddr_lock); | |
2787 | spin_lock_init(&jme->rxmcs_lock); | |
2788 | ||
2789 | atomic_set(&jme->link_changing, 1); | |
2790 | atomic_set(&jme->rx_cleaning, 1); | |
2791 | atomic_set(&jme->tx_cleaning, 1); | |
2792 | atomic_set(&jme->rx_empty, 1); | |
2793 | ||
2794 | tasklet_init(&jme->pcc_task, | |
164165da | 2795 | jme_pcc_tasklet, |
95252236 GFT |
2796 | (unsigned long) jme); |
2797 | tasklet_init(&jme->linkch_task, | |
164165da | 2798 | jme_link_change_tasklet, |
95252236 GFT |
2799 | (unsigned long) jme); |
2800 | tasklet_init(&jme->txclean_task, | |
164165da | 2801 | jme_tx_clean_tasklet, |
95252236 GFT |
2802 | (unsigned long) jme); |
2803 | tasklet_init(&jme->rxclean_task, | |
164165da | 2804 | jme_rx_clean_tasklet, |
95252236 GFT |
2805 | (unsigned long) jme); |
2806 | tasklet_init(&jme->rxempty_task, | |
164165da | 2807 | jme_rx_empty_tasklet, |
95252236 | 2808 | (unsigned long) jme); |
38ed0c21 | 2809 | tasklet_disable_nosync(&jme->linkch_task); |
95252236 GFT |
2810 | tasklet_disable_nosync(&jme->txclean_task); |
2811 | tasklet_disable_nosync(&jme->rxclean_task); | |
2812 | tasklet_disable_nosync(&jme->rxempty_task); | |
2813 | jme->dpi.cur = PCC_P1; | |
2814 | ||
2815 | jme->reg_ghc = 0; | |
2816 | jme->reg_rxcs = RXCS_DEFAULT; | |
2817 | jme->reg_rxmcs = RXMCS_DEFAULT; | |
2818 | jme->reg_txpfc = 0; | |
2819 | jme->reg_pmcs = PMCS_MFEN; | |
2820 | set_bit(JME_FLAG_TXCSUM, &jme->flags); | |
2821 | set_bit(JME_FLAG_TSO, &jme->flags); | |
2822 | ||
2823 | /* | |
2824 | * Get Max Read Req Size from PCI Config Space | |
2825 | */ | |
2826 | pci_read_config_byte(pdev, PCI_DCSR_MRRS, &jme->mrrs); | |
2827 | jme->mrrs &= PCI_DCSR_MRRS_MASK; | |
2828 | switch (jme->mrrs) { | |
2829 | case MRRS_128B: | |
2830 | jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_128B; | |
2831 | break; | |
2832 | case MRRS_256B: | |
2833 | jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_256B; | |
2834 | break; | |
2835 | default: | |
2836 | jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_512B; | |
2837 | break; | |
ee289b64 | 2838 | } |
95252236 GFT |
2839 | |
2840 | /* | |
2841 | * Must check before reset_mac_processor | |
2842 | */ | |
2843 | jme_check_hw_ver(jme); | |
2844 | jme->mii_if.dev = netdev; | |
2845 | if (jme->fpgaver) { | |
2846 | jme->mii_if.phy_id = 0; | |
2847 | for (i = 1 ; i < 32 ; ++i) { | |
2848 | bmcr = jme_mdio_read(netdev, i, MII_BMCR); | |
2849 | bmsr = jme_mdio_read(netdev, i, MII_BMSR); | |
2850 | if (bmcr != 0xFFFFU && (bmcr != 0 || bmsr != 0)) { | |
2851 | jme->mii_if.phy_id = i; | |
2852 | break; | |
2853 | } | |
2854 | } | |
2855 | ||
2856 | if (!jme->mii_if.phy_id) { | |
2857 | rc = -EIO; | |
2858 | jeprintk(pdev, "Can not find phy_id.\n"); | |
d1dfa1d1 | 2859 | goto err_out_unmap; |
95252236 GFT |
2860 | } |
2861 | ||
2862 | jme->reg_ghc |= GHC_LINK_POLL; | |
2863 | } else { | |
2864 | jme->mii_if.phy_id = 1; | |
2865 | } | |
2866 | if (pdev->device == PCI_DEVICE_ID_JMICRON_JMC250) | |
2867 | jme->mii_if.supports_gmii = true; | |
2868 | else | |
2869 | jme->mii_if.supports_gmii = false; | |
2870 | jme->mii_if.mdio_read = jme_mdio_read; | |
2871 | jme->mii_if.mdio_write = jme_mdio_write; | |
2872 | ||
2873 | jme_clear_pm(jme); | |
2874 | jme_set_phyfifoa(jme); | |
2875 | pci_read_config_byte(pdev, PCI_REVISION_ID, &jme->rev); | |
2876 | if (!jme->fpgaver) | |
2877 | jme_phy_init(jme); | |
2878 | jme_phy_off(jme); | |
2879 | ||
2880 | /* | |
2881 | * Reset MAC processor and reload EEPROM for MAC Address | |
2882 | */ | |
2883 | jme_reset_mac_processor(jme); | |
2884 | rc = jme_reload_eeprom(jme); | |
2885 | if (rc) { | |
2886 | jeprintk(pdev, | |
2887 | "Reload eeprom for reading MAC Address error.\n"); | |
d1dfa1d1 | 2888 | goto err_out_unmap; |
95252236 GFT |
2889 | } |
2890 | jme_load_macaddr(netdev); | |
2891 | ||
2892 | /* | |
2893 | * Tell stack that we are not ready to work until open() | |
2894 | */ | |
2895 | netif_carrier_off(netdev); | |
2896 | netif_stop_queue(netdev); | |
2897 | ||
2898 | /* | |
2899 | * Register netdev | |
2900 | */ | |
2901 | rc = register_netdev(netdev); | |
2902 | if (rc) { | |
2903 | jeprintk(pdev, "Cannot register net device.\n"); | |
d1dfa1d1 | 2904 | goto err_out_unmap; |
95252236 GFT |
2905 | } |
2906 | ||
f8502ce4 JP |
2907 | netif_info(jme, probe, jme->dev, "%s%s ver:%x rev:%x macaddr:%pM\n", |
2908 | (jme->pdev->device == PCI_DEVICE_ID_JMICRON_JMC250) ? | |
2909 | "JMC250 Gigabit Ethernet" : | |
2910 | (jme->pdev->device == PCI_DEVICE_ID_JMICRON_JMC260) ? | |
2911 | "JMC260 Fast Ethernet" : "Unknown", | |
2912 | (jme->fpgaver != 0) ? " (FPGA)" : "", | |
2913 | (jme->fpgaver != 0) ? jme->fpgaver : jme->chiprev, | |
2914 | jme->rev, netdev->dev_addr); | |
95252236 GFT |
2915 | |
2916 | return 0; | |
2917 | ||
95252236 GFT |
2918 | err_out_unmap: |
2919 | iounmap(jme->regs); | |
2920 | err_out_free_netdev: | |
2921 | pci_set_drvdata(pdev, NULL); | |
2922 | free_netdev(netdev); | |
2923 | err_out_release_regions: | |
2924 | pci_release_regions(pdev); | |
2925 | err_out_disable_pdev: | |
2926 | pci_disable_device(pdev); | |
2927 | err_out: | |
2928 | return rc; | |
2929 | } | |
2930 | ||
2931 | static void __devexit | |
2932 | jme_remove_one(struct pci_dev *pdev) | |
2933 | { | |
2934 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2935 | struct jme_adapter *jme = netdev_priv(netdev); | |
2936 | ||
2937 | unregister_netdev(netdev); | |
95252236 GFT |
2938 | iounmap(jme->regs); |
2939 | pci_set_drvdata(pdev, NULL); | |
2940 | free_netdev(netdev); | |
2941 | pci_release_regions(pdev); | |
2942 | pci_disable_device(pdev); | |
2943 | ||
2944 | } | |
2945 | ||
724f8805 | 2946 | #ifdef CONFIG_PM |
95252236 GFT |
2947 | static int |
2948 | jme_suspend(struct pci_dev *pdev, pm_message_t state) | |
2949 | { | |
2950 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2951 | struct jme_adapter *jme = netdev_priv(netdev); | |
2952 | ||
2953 | atomic_dec(&jme->link_changing); | |
2954 | ||
2955 | netif_device_detach(netdev); | |
2956 | netif_stop_queue(netdev); | |
2957 | jme_stop_irq(jme); | |
2958 | ||
2959 | tasklet_disable(&jme->txclean_task); | |
2960 | tasklet_disable(&jme->rxclean_task); | |
2961 | tasklet_disable(&jme->rxempty_task); | |
2962 | ||
95252236 GFT |
2963 | if (netif_carrier_ok(netdev)) { |
2964 | if (test_bit(JME_FLAG_POLL, &jme->flags)) | |
2965 | jme_polling_mode(jme); | |
2966 | ||
2967 | jme_stop_pcc_timer(jme); | |
2968 | jme_reset_ghc_speed(jme); | |
2969 | jme_disable_rx_engine(jme); | |
2970 | jme_disable_tx_engine(jme); | |
2971 | jme_reset_mac_processor(jme); | |
2972 | jme_free_rx_resources(jme); | |
2973 | jme_free_tx_resources(jme); | |
2974 | netif_carrier_off(netdev); | |
2975 | jme->phylink = 0; | |
2976 | } | |
2977 | ||
2978 | tasklet_enable(&jme->txclean_task); | |
2979 | tasklet_hi_enable(&jme->rxclean_task); | |
2980 | tasklet_hi_enable(&jme->rxempty_task); | |
2981 | ||
2982 | pci_save_state(pdev); | |
2983 | if (jme->reg_pmcs) { | |
2984 | jme_set_100m_half(jme); | |
2985 | ||
2986 | if (jme->reg_pmcs & (PMCS_LFEN | PMCS_LREN)) | |
2987 | jme_wait_link(jme); | |
2988 | ||
2989 | jwrite32(jme, JME_PMCS, jme->reg_pmcs); | |
2990 | ||
2991 | pci_enable_wake(pdev, PCI_D3cold, true); | |
2992 | } else { | |
2993 | jme_phy_off(jme); | |
2994 | } | |
2995 | pci_set_power_state(pdev, PCI_D3cold); | |
2996 | ||
2997 | return 0; | |
2998 | } | |
2999 | ||
3000 | static int | |
3001 | jme_resume(struct pci_dev *pdev) | |
3002 | { | |
3003 | struct net_device *netdev = pci_get_drvdata(pdev); | |
3004 | struct jme_adapter *jme = netdev_priv(netdev); | |
3005 | ||
3006 | jme_clear_pm(jme); | |
3007 | pci_restore_state(pdev); | |
3008 | ||
3009 | if (test_bit(JME_FLAG_SSET, &jme->flags)) | |
3010 | jme_set_settings(netdev, &jme->old_ecmd); | |
3011 | else | |
3012 | jme_reset_phy_processor(jme); | |
3013 | ||
95252236 GFT |
3014 | jme_start_irq(jme); |
3015 | netif_device_attach(netdev); | |
3016 | ||
3017 | atomic_inc(&jme->link_changing); | |
3018 | ||
3019 | jme_reset_link(jme); | |
3020 | ||
3021 | return 0; | |
3022 | } | |
724f8805 | 3023 | #endif |
95252236 | 3024 | |
a3aa1884 | 3025 | static DEFINE_PCI_DEVICE_TABLE(jme_pci_tbl) = { |
95252236 GFT |
3026 | { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMC250) }, |
3027 | { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMC260) }, | |
3028 | { } | |
3029 | }; | |
3030 | ||
3031 | static struct pci_driver jme_driver = { | |
3032 | .name = DRV_NAME, | |
3033 | .id_table = jme_pci_tbl, | |
3034 | .probe = jme_init_one, | |
3035 | .remove = __devexit_p(jme_remove_one), | |
3036 | #ifdef CONFIG_PM | |
3037 | .suspend = jme_suspend, | |
3038 | .resume = jme_resume, | |
3039 | #endif /* CONFIG_PM */ | |
3040 | }; | |
3041 | ||
3042 | static int __init | |
3043 | jme_init_module(void) | |
3044 | { | |
07c8d2aa | 3045 | printk(KERN_INFO PFX "JMicron JMC2XX ethernet " |
95252236 GFT |
3046 | "driver version %s\n", DRV_VERSION); |
3047 | return pci_register_driver(&jme_driver); | |
3048 | } | |
3049 | ||
3050 | static void __exit | |
3051 | jme_cleanup_module(void) | |
3052 | { | |
3053 | pci_unregister_driver(&jme_driver); | |
3054 | } | |
3055 | ||
3056 | module_init(jme_init_module); | |
3057 | module_exit(jme_cleanup_module); | |
3058 | ||
3059 | MODULE_AUTHOR("Guo-Fu Tseng <cooldavid@cooldavid.org>"); | |
3060 | MODULE_DESCRIPTION("JMicron JMC2x0 PCI Express Ethernet driver"); | |
3061 | MODULE_LICENSE("GPL"); | |
3062 | MODULE_VERSION(DRV_VERSION); | |
3063 | MODULE_DEVICE_TABLE(pci, jme_pci_tbl); | |
3064 |