Commit | Line | Data |
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1d3bb996 DG |
1 | /* |
2 | * drivers/net/ibm_newemac/core.c | |
3 | * | |
4 | * Driver for PowerPC 4xx on-chip ethernet controller. | |
5 | * | |
17cf803a BH |
6 | * Copyright 2007 Benjamin Herrenschmidt, IBM Corp. |
7 | * <benh@kernel.crashing.org> | |
8 | * | |
9 | * Based on the arch/ppc version of the driver: | |
10 | * | |
1d3bb996 DG |
11 | * Copyright (c) 2004, 2005 Zultys Technologies. |
12 | * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net> | |
13 | * | |
14 | * Based on original work by | |
15 | * Matt Porter <mporter@kernel.crashing.org> | |
16 | * (c) 2003 Benjamin Herrenschmidt <benh@kernel.crashing.org> | |
17 | * Armin Kuster <akuster@mvista.com> | |
18 | * Johnnie Peters <jpeters@mvista.com> | |
19 | * | |
20 | * This program is free software; you can redistribute it and/or modify it | |
21 | * under the terms of the GNU General Public License as published by the | |
22 | * Free Software Foundation; either version 2 of the License, or (at your | |
23 | * option) any later version. | |
24 | * | |
25 | */ | |
26 | ||
27 | #include <linux/sched.h> | |
28 | #include <linux/string.h> | |
29 | #include <linux/errno.h> | |
30 | #include <linux/delay.h> | |
31 | #include <linux/types.h> | |
32 | #include <linux/pci.h> | |
33 | #include <linux/etherdevice.h> | |
34 | #include <linux/skbuff.h> | |
35 | #include <linux/crc32.h> | |
36 | #include <linux/ethtool.h> | |
37 | #include <linux/mii.h> | |
38 | #include <linux/bitops.h> | |
39 | #include <linux/workqueue.h> | |
283029d1 | 40 | #include <linux/of.h> |
1d3bb996 DG |
41 | |
42 | #include <asm/processor.h> | |
43 | #include <asm/io.h> | |
44 | #include <asm/dma.h> | |
45 | #include <asm/uaccess.h> | |
0925ab5d VB |
46 | #include <asm/dcr.h> |
47 | #include <asm/dcr-regs.h> | |
1d3bb996 DG |
48 | |
49 | #include "core.h" | |
50 | ||
51 | /* | |
52 | * Lack of dma_unmap_???? calls is intentional. | |
53 | * | |
54 | * API-correct usage requires additional support state information to be | |
55 | * maintained for every RX and TX buffer descriptor (BD). Unfortunately, due to | |
56 | * EMAC design (e.g. TX buffer passed from network stack can be split into | |
57 | * several BDs, dma_map_single/dma_map_page can be used to map particular BD), | |
58 | * maintaining such information will add additional overhead. | |
59 | * Current DMA API implementation for 4xx processors only ensures cache coherency | |
60 | * and dma_unmap_???? routines are empty and are likely to stay this way. | |
61 | * I decided to omit dma_unmap_??? calls because I don't want to add additional | |
62 | * complexity just for the sake of following some abstract API, when it doesn't | |
63 | * add any real benefit to the driver. I understand that this decision maybe | |
64 | * controversial, but I really tried to make code API-correct and efficient | |
65 | * at the same time and didn't come up with code I liked :(. --ebs | |
66 | */ | |
67 | ||
68 | #define DRV_NAME "emac" | |
69 | #define DRV_VERSION "3.54" | |
70 | #define DRV_DESC "PPC 4xx OCP EMAC driver" | |
71 | ||
72 | MODULE_DESCRIPTION(DRV_DESC); | |
73 | MODULE_AUTHOR | |
74 | ("Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net>"); | |
75 | MODULE_LICENSE("GPL"); | |
76 | ||
77 | /* | |
78 | * PPC64 doesn't (yet) have a cacheable_memcpy | |
79 | */ | |
80 | #ifdef CONFIG_PPC64 | |
81 | #define cacheable_memcpy(d,s,n) memcpy((d),(s),(n)) | |
82 | #endif | |
83 | ||
84 | /* minimum number of free TX descriptors required to wake up TX process */ | |
85 | #define EMAC_TX_WAKEUP_THRESH (NUM_TX_BUFF / 4) | |
86 | ||
87 | /* If packet size is less than this number, we allocate small skb and copy packet | |
88 | * contents into it instead of just sending original big skb up | |
89 | */ | |
90 | #define EMAC_RX_COPY_THRESH CONFIG_IBM_NEW_EMAC_RX_COPY_THRESHOLD | |
91 | ||
92 | /* Since multiple EMACs share MDIO lines in various ways, we need | |
93 | * to avoid re-using the same PHY ID in cases where the arch didn't | |
94 | * setup precise phy_map entries | |
95 | * | |
96 | * XXX This is something that needs to be reworked as we can have multiple | |
97 | * EMAC "sets" (multiple ASICs containing several EMACs) though we can | |
98 | * probably require in that case to have explicit PHY IDs in the device-tree | |
99 | */ | |
100 | static u32 busy_phy_map; | |
101 | static DEFINE_MUTEX(emac_phy_map_lock); | |
102 | ||
103 | /* This is the wait queue used to wait on any event related to probe, that | |
104 | * is discovery of MALs, other EMACs, ZMII/RGMIIs, etc... | |
105 | */ | |
106 | static DECLARE_WAIT_QUEUE_HEAD(emac_probe_wait); | |
107 | ||
108 | /* Having stable interface names is a doomed idea. However, it would be nice | |
109 | * if we didn't have completely random interface names at boot too :-) It's | |
110 | * just a matter of making everybody's life easier. Since we are doing | |
111 | * threaded probing, it's a bit harder though. The base idea here is that | |
112 | * we make up a list of all emacs in the device-tree before we register the | |
113 | * driver. Every emac will then wait for the previous one in the list to | |
114 | * initialize before itself. We should also keep that list ordered by | |
115 | * cell_index. | |
116 | * That list is only 4 entries long, meaning that additional EMACs don't | |
117 | * get ordering guarantees unless EMAC_BOOT_LIST_SIZE is increased. | |
118 | */ | |
119 | ||
120 | #define EMAC_BOOT_LIST_SIZE 4 | |
121 | static struct device_node *emac_boot_list[EMAC_BOOT_LIST_SIZE]; | |
122 | ||
123 | /* How long should I wait for dependent devices ? */ | |
124 | #define EMAC_PROBE_DEP_TIMEOUT (HZ * 5) | |
125 | ||
126 | /* I don't want to litter system log with timeout errors | |
127 | * when we have brain-damaged PHY. | |
128 | */ | |
129 | static inline void emac_report_timeout_error(struct emac_instance *dev, | |
130 | const char *error) | |
131 | { | |
11121e30 | 132 | if (emac_has_feature(dev, EMAC_FTR_440GX_PHY_CLK_FIX | |
9e3cb294 | 133 | EMAC_FTR_460EX_PHY_CLK_FIX | |
11121e30 VB |
134 | EMAC_FTR_440EP_PHY_CLK_FIX)) |
135 | DBG(dev, "%s" NL, error); | |
136 | else if (net_ratelimit()) | |
62f0c338 | 137 | printk(KERN_ERR "%s: %s\n", dev->ofdev->node->full_name, error); |
1d3bb996 DG |
138 | } |
139 | ||
11121e30 VB |
140 | /* EMAC PHY clock workaround: |
141 | * 440EP/440GR has more sane SDR0_MFR register implementation than 440GX, | |
142 | * which allows controlling each EMAC clock | |
143 | */ | |
144 | static inline void emac_rx_clk_tx(struct emac_instance *dev) | |
145 | { | |
146 | #ifdef CONFIG_PPC_DCR_NATIVE | |
147 | if (emac_has_feature(dev, EMAC_FTR_440EP_PHY_CLK_FIX)) | |
148 | dcri_clrset(SDR0, SDR0_MFR, | |
149 | 0, SDR0_MFR_ECS >> dev->cell_index); | |
150 | #endif | |
151 | } | |
152 | ||
153 | static inline void emac_rx_clk_default(struct emac_instance *dev) | |
154 | { | |
155 | #ifdef CONFIG_PPC_DCR_NATIVE | |
156 | if (emac_has_feature(dev, EMAC_FTR_440EP_PHY_CLK_FIX)) | |
157 | dcri_clrset(SDR0, SDR0_MFR, | |
158 | SDR0_MFR_ECS >> dev->cell_index, 0); | |
159 | #endif | |
160 | } | |
161 | ||
1d3bb996 DG |
162 | /* PHY polling intervals */ |
163 | #define PHY_POLL_LINK_ON HZ | |
164 | #define PHY_POLL_LINK_OFF (HZ / 5) | |
165 | ||
166 | /* Graceful stop timeouts in us. | |
167 | * We should allow up to 1 frame time (full-duplex, ignoring collisions) | |
168 | */ | |
169 | #define STOP_TIMEOUT_10 1230 | |
170 | #define STOP_TIMEOUT_100 124 | |
171 | #define STOP_TIMEOUT_1000 13 | |
172 | #define STOP_TIMEOUT_1000_JUMBO 73 | |
173 | ||
4373c932 PB |
174 | static unsigned char default_mcast_addr[] = { |
175 | 0x01, 0x80, 0xC2, 0x00, 0x00, 0x01 | |
176 | }; | |
177 | ||
1d3bb996 DG |
178 | /* Please, keep in sync with struct ibm_emac_stats/ibm_emac_error_stats */ |
179 | static const char emac_stats_keys[EMAC_ETHTOOL_STATS_COUNT][ETH_GSTRING_LEN] = { | |
180 | "rx_packets", "rx_bytes", "tx_packets", "tx_bytes", "rx_packets_csum", | |
181 | "tx_packets_csum", "tx_undo", "rx_dropped_stack", "rx_dropped_oom", | |
182 | "rx_dropped_error", "rx_dropped_resize", "rx_dropped_mtu", | |
183 | "rx_stopped", "rx_bd_errors", "rx_bd_overrun", "rx_bd_bad_packet", | |
184 | "rx_bd_runt_packet", "rx_bd_short_event", "rx_bd_alignment_error", | |
185 | "rx_bd_bad_fcs", "rx_bd_packet_too_long", "rx_bd_out_of_range", | |
186 | "rx_bd_in_range", "rx_parity", "rx_fifo_overrun", "rx_overrun", | |
187 | "rx_bad_packet", "rx_runt_packet", "rx_short_event", | |
188 | "rx_alignment_error", "rx_bad_fcs", "rx_packet_too_long", | |
189 | "rx_out_of_range", "rx_in_range", "tx_dropped", "tx_bd_errors", | |
190 | "tx_bd_bad_fcs", "tx_bd_carrier_loss", "tx_bd_excessive_deferral", | |
191 | "tx_bd_excessive_collisions", "tx_bd_late_collision", | |
192 | "tx_bd_multple_collisions", "tx_bd_single_collision", | |
193 | "tx_bd_underrun", "tx_bd_sqe", "tx_parity", "tx_underrun", "tx_sqe", | |
194 | "tx_errors" | |
195 | }; | |
196 | ||
197 | static irqreturn_t emac_irq(int irq, void *dev_instance); | |
198 | static void emac_clean_tx_ring(struct emac_instance *dev); | |
199 | static void __emac_set_multicast_list(struct emac_instance *dev); | |
200 | ||
201 | static inline int emac_phy_supports_gige(int phy_mode) | |
202 | { | |
203 | return phy_mode == PHY_MODE_GMII || | |
204 | phy_mode == PHY_MODE_RGMII || | |
9e3cb294 | 205 | phy_mode == PHY_MODE_SGMII || |
1d3bb996 DG |
206 | phy_mode == PHY_MODE_TBI || |
207 | phy_mode == PHY_MODE_RTBI; | |
208 | } | |
209 | ||
210 | static inline int emac_phy_gpcs(int phy_mode) | |
211 | { | |
9e3cb294 VG |
212 | return phy_mode == PHY_MODE_SGMII || |
213 | phy_mode == PHY_MODE_TBI || | |
1d3bb996 DG |
214 | phy_mode == PHY_MODE_RTBI; |
215 | } | |
216 | ||
217 | static inline void emac_tx_enable(struct emac_instance *dev) | |
218 | { | |
219 | struct emac_regs __iomem *p = dev->emacp; | |
220 | u32 r; | |
221 | ||
222 | DBG(dev, "tx_enable" NL); | |
223 | ||
224 | r = in_be32(&p->mr0); | |
225 | if (!(r & EMAC_MR0_TXE)) | |
226 | out_be32(&p->mr0, r | EMAC_MR0_TXE); | |
227 | } | |
228 | ||
229 | static void emac_tx_disable(struct emac_instance *dev) | |
230 | { | |
231 | struct emac_regs __iomem *p = dev->emacp; | |
232 | u32 r; | |
233 | ||
234 | DBG(dev, "tx_disable" NL); | |
235 | ||
236 | r = in_be32(&p->mr0); | |
237 | if (r & EMAC_MR0_TXE) { | |
238 | int n = dev->stop_timeout; | |
239 | out_be32(&p->mr0, r & ~EMAC_MR0_TXE); | |
240 | while (!(in_be32(&p->mr0) & EMAC_MR0_TXI) && n) { | |
241 | udelay(1); | |
242 | --n; | |
243 | } | |
244 | if (unlikely(!n)) | |
245 | emac_report_timeout_error(dev, "TX disable timeout"); | |
246 | } | |
247 | } | |
248 | ||
249 | static void emac_rx_enable(struct emac_instance *dev) | |
250 | { | |
251 | struct emac_regs __iomem *p = dev->emacp; | |
252 | u32 r; | |
253 | ||
254 | if (unlikely(test_bit(MAL_COMMAC_RX_STOPPED, &dev->commac.flags))) | |
255 | goto out; | |
256 | ||
257 | DBG(dev, "rx_enable" NL); | |
258 | ||
259 | r = in_be32(&p->mr0); | |
260 | if (!(r & EMAC_MR0_RXE)) { | |
261 | if (unlikely(!(r & EMAC_MR0_RXI))) { | |
262 | /* Wait if previous async disable is still in progress */ | |
263 | int n = dev->stop_timeout; | |
264 | while (!(r = in_be32(&p->mr0) & EMAC_MR0_RXI) && n) { | |
265 | udelay(1); | |
266 | --n; | |
267 | } | |
268 | if (unlikely(!n)) | |
269 | emac_report_timeout_error(dev, | |
270 | "RX disable timeout"); | |
271 | } | |
272 | out_be32(&p->mr0, r | EMAC_MR0_RXE); | |
273 | } | |
274 | out: | |
275 | ; | |
276 | } | |
277 | ||
278 | static void emac_rx_disable(struct emac_instance *dev) | |
279 | { | |
280 | struct emac_regs __iomem *p = dev->emacp; | |
281 | u32 r; | |
282 | ||
283 | DBG(dev, "rx_disable" NL); | |
284 | ||
285 | r = in_be32(&p->mr0); | |
286 | if (r & EMAC_MR0_RXE) { | |
287 | int n = dev->stop_timeout; | |
288 | out_be32(&p->mr0, r & ~EMAC_MR0_RXE); | |
289 | while (!(in_be32(&p->mr0) & EMAC_MR0_RXI) && n) { | |
290 | udelay(1); | |
291 | --n; | |
292 | } | |
293 | if (unlikely(!n)) | |
294 | emac_report_timeout_error(dev, "RX disable timeout"); | |
295 | } | |
296 | } | |
297 | ||
298 | static inline void emac_netif_stop(struct emac_instance *dev) | |
299 | { | |
300 | netif_tx_lock_bh(dev->ndev); | |
e308a5d8 | 301 | netif_addr_lock(dev->ndev); |
1d3bb996 | 302 | dev->no_mcast = 1; |
e308a5d8 | 303 | netif_addr_unlock(dev->ndev); |
1d3bb996 DG |
304 | netif_tx_unlock_bh(dev->ndev); |
305 | dev->ndev->trans_start = jiffies; /* prevent tx timeout */ | |
306 | mal_poll_disable(dev->mal, &dev->commac); | |
307 | netif_tx_disable(dev->ndev); | |
308 | } | |
309 | ||
310 | static inline void emac_netif_start(struct emac_instance *dev) | |
311 | { | |
312 | netif_tx_lock_bh(dev->ndev); | |
e308a5d8 | 313 | netif_addr_lock(dev->ndev); |
1d3bb996 DG |
314 | dev->no_mcast = 0; |
315 | if (dev->mcast_pending && netif_running(dev->ndev)) | |
316 | __emac_set_multicast_list(dev); | |
e308a5d8 | 317 | netif_addr_unlock(dev->ndev); |
1d3bb996 DG |
318 | netif_tx_unlock_bh(dev->ndev); |
319 | ||
320 | netif_wake_queue(dev->ndev); | |
321 | ||
322 | /* NOTE: unconditional netif_wake_queue is only appropriate | |
323 | * so long as all callers are assured to have free tx slots | |
324 | * (taken from tg3... though the case where that is wrong is | |
325 | * not terribly harmful) | |
326 | */ | |
327 | mal_poll_enable(dev->mal, &dev->commac); | |
328 | } | |
329 | ||
330 | static inline void emac_rx_disable_async(struct emac_instance *dev) | |
331 | { | |
332 | struct emac_regs __iomem *p = dev->emacp; | |
333 | u32 r; | |
334 | ||
335 | DBG(dev, "rx_disable_async" NL); | |
336 | ||
337 | r = in_be32(&p->mr0); | |
338 | if (r & EMAC_MR0_RXE) | |
339 | out_be32(&p->mr0, r & ~EMAC_MR0_RXE); | |
340 | } | |
341 | ||
342 | static int emac_reset(struct emac_instance *dev) | |
343 | { | |
344 | struct emac_regs __iomem *p = dev->emacp; | |
345 | int n = 20; | |
346 | ||
347 | DBG(dev, "reset" NL); | |
348 | ||
349 | if (!dev->reset_failed) { | |
350 | /* 40x erratum suggests stopping RX channel before reset, | |
351 | * we stop TX as well | |
352 | */ | |
353 | emac_rx_disable(dev); | |
354 | emac_tx_disable(dev); | |
355 | } | |
356 | ||
9e3cb294 VG |
357 | #ifdef CONFIG_PPC_DCR_NATIVE |
358 | /* Enable internal clock source */ | |
359 | if (emac_has_feature(dev, EMAC_FTR_460EX_PHY_CLK_FIX)) | |
360 | dcri_clrset(SDR0, SDR0_ETH_CFG, | |
361 | 0, SDR0_ETH_CFG_ECS << dev->cell_index); | |
362 | #endif | |
363 | ||
1d3bb996 DG |
364 | out_be32(&p->mr0, EMAC_MR0_SRST); |
365 | while ((in_be32(&p->mr0) & EMAC_MR0_SRST) && n) | |
366 | --n; | |
367 | ||
9e3cb294 VG |
368 | #ifdef CONFIG_PPC_DCR_NATIVE |
369 | /* Enable external clock source */ | |
370 | if (emac_has_feature(dev, EMAC_FTR_460EX_PHY_CLK_FIX)) | |
371 | dcri_clrset(SDR0, SDR0_ETH_CFG, | |
372 | SDR0_ETH_CFG_ECS << dev->cell_index, 0); | |
373 | #endif | |
374 | ||
1d3bb996 DG |
375 | if (n) { |
376 | dev->reset_failed = 0; | |
377 | return 0; | |
378 | } else { | |
379 | emac_report_timeout_error(dev, "reset timeout"); | |
380 | dev->reset_failed = 1; | |
381 | return -ETIMEDOUT; | |
382 | } | |
383 | } | |
384 | ||
385 | static void emac_hash_mc(struct emac_instance *dev) | |
386 | { | |
05781ccd GE |
387 | const int regs = EMAC_XAHT_REGS(dev); |
388 | u32 *gaht_base = emac_gaht_base(dev); | |
389 | u32 gaht_temp[regs]; | |
1d3bb996 | 390 | struct dev_mc_list *dmi; |
05781ccd | 391 | int i; |
1d3bb996 DG |
392 | |
393 | DBG(dev, "hash_mc %d" NL, dev->ndev->mc_count); | |
394 | ||
05781ccd GE |
395 | memset(gaht_temp, 0, sizeof (gaht_temp)); |
396 | ||
1d3bb996 | 397 | for (dmi = dev->ndev->mc_list; dmi; dmi = dmi->next) { |
05781ccd | 398 | int slot, reg, mask; |
7c510e4b | 399 | DBG2(dev, "mc %pM" NL, dmi->dmi_addr); |
1d3bb996 | 400 | |
05781ccd GE |
401 | slot = EMAC_XAHT_CRC_TO_SLOT(dev, ether_crc(ETH_ALEN, dmi->dmi_addr)); |
402 | reg = EMAC_XAHT_SLOT_TO_REG(dev, slot); | |
403 | mask = EMAC_XAHT_SLOT_TO_MASK(dev, slot); | |
404 | ||
405 | gaht_temp[reg] |= mask; | |
1d3bb996 | 406 | } |
05781ccd GE |
407 | |
408 | for (i = 0; i < regs; i++) | |
409 | out_be32(gaht_base + i, gaht_temp[i]); | |
1d3bb996 DG |
410 | } |
411 | ||
412 | static inline u32 emac_iff2rmr(struct net_device *ndev) | |
413 | { | |
414 | struct emac_instance *dev = netdev_priv(ndev); | |
415 | u32 r; | |
416 | ||
417 | r = EMAC_RMR_SP | EMAC_RMR_SFCS | EMAC_RMR_IAE | EMAC_RMR_BAE; | |
418 | ||
419 | if (emac_has_feature(dev, EMAC_FTR_EMAC4)) | |
420 | r |= EMAC4_RMR_BASE; | |
421 | else | |
422 | r |= EMAC_RMR_BASE; | |
423 | ||
424 | if (ndev->flags & IFF_PROMISC) | |
425 | r |= EMAC_RMR_PME; | |
05781ccd GE |
426 | else if (ndev->flags & IFF_ALLMULTI || |
427 | (ndev->mc_count > EMAC_XAHT_SLOTS(dev))) | |
1d3bb996 DG |
428 | r |= EMAC_RMR_PMME; |
429 | else if (ndev->mc_count > 0) | |
430 | r |= EMAC_RMR_MAE; | |
431 | ||
432 | return r; | |
433 | } | |
434 | ||
435 | static u32 __emac_calc_base_mr1(struct emac_instance *dev, int tx_size, int rx_size) | |
436 | { | |
437 | u32 ret = EMAC_MR1_VLE | EMAC_MR1_IST | EMAC_MR1_TR0_MULT; | |
438 | ||
439 | DBG2(dev, "__emac_calc_base_mr1" NL); | |
440 | ||
441 | switch(tx_size) { | |
442 | case 2048: | |
443 | ret |= EMAC_MR1_TFS_2K; | |
444 | break; | |
445 | default: | |
446 | printk(KERN_WARNING "%s: Unknown Rx FIFO size %d\n", | |
447 | dev->ndev->name, tx_size); | |
448 | } | |
449 | ||
450 | switch(rx_size) { | |
451 | case 16384: | |
452 | ret |= EMAC_MR1_RFS_16K; | |
453 | break; | |
454 | case 4096: | |
455 | ret |= EMAC_MR1_RFS_4K; | |
456 | break; | |
457 | default: | |
458 | printk(KERN_WARNING "%s: Unknown Rx FIFO size %d\n", | |
459 | dev->ndev->name, rx_size); | |
460 | } | |
461 | ||
462 | return ret; | |
463 | } | |
464 | ||
465 | static u32 __emac4_calc_base_mr1(struct emac_instance *dev, int tx_size, int rx_size) | |
466 | { | |
467 | u32 ret = EMAC_MR1_VLE | EMAC_MR1_IST | EMAC4_MR1_TR | | |
4696c3c4 | 468 | EMAC4_MR1_OBCI(dev->opb_bus_freq / 1000000); |
1d3bb996 DG |
469 | |
470 | DBG2(dev, "__emac4_calc_base_mr1" NL); | |
471 | ||
472 | switch(tx_size) { | |
473 | case 4096: | |
474 | ret |= EMAC4_MR1_TFS_4K; | |
475 | break; | |
476 | case 2048: | |
477 | ret |= EMAC4_MR1_TFS_2K; | |
478 | break; | |
479 | default: | |
480 | printk(KERN_WARNING "%s: Unknown Rx FIFO size %d\n", | |
481 | dev->ndev->name, tx_size); | |
482 | } | |
483 | ||
484 | switch(rx_size) { | |
485 | case 16384: | |
486 | ret |= EMAC4_MR1_RFS_16K; | |
487 | break; | |
488 | case 4096: | |
489 | ret |= EMAC4_MR1_RFS_4K; | |
490 | break; | |
491 | case 2048: | |
492 | ret |= EMAC4_MR1_RFS_2K; | |
493 | break; | |
494 | default: | |
495 | printk(KERN_WARNING "%s: Unknown Rx FIFO size %d\n", | |
496 | dev->ndev->name, rx_size); | |
497 | } | |
498 | ||
499 | return ret; | |
500 | } | |
501 | ||
502 | static u32 emac_calc_base_mr1(struct emac_instance *dev, int tx_size, int rx_size) | |
503 | { | |
504 | return emac_has_feature(dev, EMAC_FTR_EMAC4) ? | |
505 | __emac4_calc_base_mr1(dev, tx_size, rx_size) : | |
506 | __emac_calc_base_mr1(dev, tx_size, rx_size); | |
507 | } | |
508 | ||
509 | static inline u32 emac_calc_trtr(struct emac_instance *dev, unsigned int size) | |
510 | { | |
511 | if (emac_has_feature(dev, EMAC_FTR_EMAC4)) | |
512 | return ((size >> 6) - 1) << EMAC_TRTR_SHIFT_EMAC4; | |
513 | else | |
514 | return ((size >> 6) - 1) << EMAC_TRTR_SHIFT; | |
515 | } | |
516 | ||
517 | static inline u32 emac_calc_rwmr(struct emac_instance *dev, | |
518 | unsigned int low, unsigned int high) | |
519 | { | |
520 | if (emac_has_feature(dev, EMAC_FTR_EMAC4)) | |
521 | return (low << 22) | ( (high & 0x3ff) << 6); | |
522 | else | |
523 | return (low << 23) | ( (high & 0x1ff) << 7); | |
524 | } | |
525 | ||
526 | static int emac_configure(struct emac_instance *dev) | |
527 | { | |
528 | struct emac_regs __iomem *p = dev->emacp; | |
529 | struct net_device *ndev = dev->ndev; | |
911b237d | 530 | int tx_size, rx_size, link = netif_carrier_ok(dev->ndev); |
1d3bb996 DG |
531 | u32 r, mr1 = 0; |
532 | ||
533 | DBG(dev, "configure" NL); | |
534 | ||
911b237d BH |
535 | if (!link) { |
536 | out_be32(&p->mr1, in_be32(&p->mr1) | |
537 | | EMAC_MR1_FDE | EMAC_MR1_ILE); | |
538 | udelay(100); | |
539 | } else if (emac_reset(dev) < 0) | |
1d3bb996 DG |
540 | return -ETIMEDOUT; |
541 | ||
542 | if (emac_has_feature(dev, EMAC_FTR_HAS_TAH)) | |
543 | tah_reset(dev->tah_dev); | |
544 | ||
911b237d BH |
545 | DBG(dev, " link = %d duplex = %d, pause = %d, asym_pause = %d\n", |
546 | link, dev->phy.duplex, dev->phy.pause, dev->phy.asym_pause); | |
1d3bb996 DG |
547 | |
548 | /* Default fifo sizes */ | |
549 | tx_size = dev->tx_fifo_size; | |
550 | rx_size = dev->rx_fifo_size; | |
551 | ||
911b237d BH |
552 | /* No link, force loopback */ |
553 | if (!link) | |
554 | mr1 = EMAC_MR1_FDE | EMAC_MR1_ILE; | |
555 | ||
1d3bb996 | 556 | /* Check for full duplex */ |
911b237d | 557 | else if (dev->phy.duplex == DUPLEX_FULL) |
1d3bb996 DG |
558 | mr1 |= EMAC_MR1_FDE | EMAC_MR1_MWSW_001; |
559 | ||
560 | /* Adjust fifo sizes, mr1 and timeouts based on link speed */ | |
561 | dev->stop_timeout = STOP_TIMEOUT_10; | |
562 | switch (dev->phy.speed) { | |
563 | case SPEED_1000: | |
564 | if (emac_phy_gpcs(dev->phy.mode)) { | |
9e3cb294 VG |
565 | mr1 |= EMAC_MR1_MF_1000GPCS | EMAC_MR1_MF_IPPA( |
566 | (dev->phy.gpcs_address != 0xffffffff) ? | |
567 | dev->phy.gpcs_address : dev->phy.address); | |
1d3bb996 DG |
568 | |
569 | /* Put some arbitrary OUI, Manuf & Rev IDs so we can | |
570 | * identify this GPCS PHY later. | |
571 | */ | |
05781ccd | 572 | out_be32(&p->u1.emac4.ipcr, 0xdeadbeef); |
1d3bb996 DG |
573 | } else |
574 | mr1 |= EMAC_MR1_MF_1000; | |
575 | ||
576 | /* Extended fifo sizes */ | |
577 | tx_size = dev->tx_fifo_size_gige; | |
578 | rx_size = dev->rx_fifo_size_gige; | |
579 | ||
580 | if (dev->ndev->mtu > ETH_DATA_LEN) { | |
f34ebab6 SR |
581 | if (emac_has_feature(dev, EMAC_FTR_EMAC4)) |
582 | mr1 |= EMAC4_MR1_JPSM; | |
583 | else | |
584 | mr1 |= EMAC_MR1_JPSM; | |
1d3bb996 DG |
585 | dev->stop_timeout = STOP_TIMEOUT_1000_JUMBO; |
586 | } else | |
587 | dev->stop_timeout = STOP_TIMEOUT_1000; | |
588 | break; | |
589 | case SPEED_100: | |
590 | mr1 |= EMAC_MR1_MF_100; | |
591 | dev->stop_timeout = STOP_TIMEOUT_100; | |
592 | break; | |
593 | default: /* make gcc happy */ | |
594 | break; | |
595 | } | |
596 | ||
597 | if (emac_has_feature(dev, EMAC_FTR_HAS_RGMII)) | |
598 | rgmii_set_speed(dev->rgmii_dev, dev->rgmii_port, | |
599 | dev->phy.speed); | |
600 | if (emac_has_feature(dev, EMAC_FTR_HAS_ZMII)) | |
601 | zmii_set_speed(dev->zmii_dev, dev->zmii_port, dev->phy.speed); | |
602 | ||
603 | /* on 40x erratum forces us to NOT use integrated flow control, | |
604 | * let's hope it works on 44x ;) | |
605 | */ | |
606 | if (!emac_has_feature(dev, EMAC_FTR_NO_FLOW_CONTROL_40x) && | |
607 | dev->phy.duplex == DUPLEX_FULL) { | |
608 | if (dev->phy.pause) | |
609 | mr1 |= EMAC_MR1_EIFC | EMAC_MR1_APP; | |
610 | else if (dev->phy.asym_pause) | |
611 | mr1 |= EMAC_MR1_APP; | |
612 | } | |
613 | ||
614 | /* Add base settings & fifo sizes & program MR1 */ | |
615 | mr1 |= emac_calc_base_mr1(dev, tx_size, rx_size); | |
616 | out_be32(&p->mr1, mr1); | |
617 | ||
618 | /* Set individual MAC address */ | |
619 | out_be32(&p->iahr, (ndev->dev_addr[0] << 8) | ndev->dev_addr[1]); | |
620 | out_be32(&p->ialr, (ndev->dev_addr[2] << 24) | | |
621 | (ndev->dev_addr[3] << 16) | (ndev->dev_addr[4] << 8) | | |
622 | ndev->dev_addr[5]); | |
623 | ||
624 | /* VLAN Tag Protocol ID */ | |
625 | out_be32(&p->vtpid, 0x8100); | |
626 | ||
627 | /* Receive mode register */ | |
628 | r = emac_iff2rmr(ndev); | |
629 | if (r & EMAC_RMR_MAE) | |
630 | emac_hash_mc(dev); | |
631 | out_be32(&p->rmr, r); | |
632 | ||
633 | /* FIFOs thresholds */ | |
634 | if (emac_has_feature(dev, EMAC_FTR_EMAC4)) | |
635 | r = EMAC4_TMR1((dev->mal_burst_size / dev->fifo_entry_size) + 1, | |
636 | tx_size / 2 / dev->fifo_entry_size); | |
637 | else | |
638 | r = EMAC_TMR1((dev->mal_burst_size / dev->fifo_entry_size) + 1, | |
639 | tx_size / 2 / dev->fifo_entry_size); | |
640 | out_be32(&p->tmr1, r); | |
641 | out_be32(&p->trtr, emac_calc_trtr(dev, tx_size / 2)); | |
642 | ||
643 | /* PAUSE frame is sent when RX FIFO reaches its high-water mark, | |
644 | there should be still enough space in FIFO to allow the our link | |
645 | partner time to process this frame and also time to send PAUSE | |
646 | frame itself. | |
647 | ||
648 | Here is the worst case scenario for the RX FIFO "headroom" | |
649 | (from "The Switch Book") (100Mbps, without preamble, inter-frame gap): | |
650 | ||
651 | 1) One maximum-length frame on TX 1522 bytes | |
652 | 2) One PAUSE frame time 64 bytes | |
653 | 3) PAUSE frame decode time allowance 64 bytes | |
654 | 4) One maximum-length frame on RX 1522 bytes | |
655 | 5) Round-trip propagation delay of the link (100Mb) 15 bytes | |
656 | ---------- | |
657 | 3187 bytes | |
658 | ||
659 | I chose to set high-water mark to RX_FIFO_SIZE / 4 (1024 bytes) | |
660 | low-water mark to RX_FIFO_SIZE / 8 (512 bytes) | |
661 | */ | |
662 | r = emac_calc_rwmr(dev, rx_size / 8 / dev->fifo_entry_size, | |
663 | rx_size / 4 / dev->fifo_entry_size); | |
664 | out_be32(&p->rwmr, r); | |
665 | ||
666 | /* Set PAUSE timer to the maximum */ | |
667 | out_be32(&p->ptr, 0xffff); | |
668 | ||
669 | /* IRQ sources */ | |
670 | r = EMAC_ISR_OVR | EMAC_ISR_BP | EMAC_ISR_SE | | |
671 | EMAC_ISR_ALE | EMAC_ISR_BFCS | EMAC_ISR_PTLE | EMAC_ISR_ORE | | |
672 | EMAC_ISR_IRE | EMAC_ISR_TE; | |
673 | if (emac_has_feature(dev, EMAC_FTR_EMAC4)) | |
674 | r |= EMAC4_ISR_TXPE | EMAC4_ISR_RXPE /* | EMAC4_ISR_TXUE | | |
675 | EMAC4_ISR_RXOE | */; | |
676 | out_be32(&p->iser, r); | |
677 | ||
678 | /* We need to take GPCS PHY out of isolate mode after EMAC reset */ | |
9e3cb294 VG |
679 | if (emac_phy_gpcs(dev->phy.mode)) { |
680 | if (dev->phy.gpcs_address != 0xffffffff) | |
681 | emac_mii_reset_gpcs(&dev->phy); | |
682 | else | |
683 | emac_mii_reset_phy(&dev->phy); | |
684 | } | |
1d3bb996 DG |
685 | |
686 | return 0; | |
687 | } | |
688 | ||
689 | static void emac_reinitialize(struct emac_instance *dev) | |
690 | { | |
691 | DBG(dev, "reinitialize" NL); | |
692 | ||
693 | emac_netif_stop(dev); | |
694 | if (!emac_configure(dev)) { | |
695 | emac_tx_enable(dev); | |
696 | emac_rx_enable(dev); | |
697 | } | |
698 | emac_netif_start(dev); | |
699 | } | |
700 | ||
701 | static void emac_full_tx_reset(struct emac_instance *dev) | |
702 | { | |
703 | DBG(dev, "full_tx_reset" NL); | |
704 | ||
705 | emac_tx_disable(dev); | |
706 | mal_disable_tx_channel(dev->mal, dev->mal_tx_chan); | |
707 | emac_clean_tx_ring(dev); | |
708 | dev->tx_cnt = dev->tx_slot = dev->ack_slot = 0; | |
709 | ||
710 | emac_configure(dev); | |
711 | ||
712 | mal_enable_tx_channel(dev->mal, dev->mal_tx_chan); | |
713 | emac_tx_enable(dev); | |
714 | emac_rx_enable(dev); | |
715 | } | |
716 | ||
717 | static void emac_reset_work(struct work_struct *work) | |
718 | { | |
719 | struct emac_instance *dev = container_of(work, struct emac_instance, reset_work); | |
720 | ||
721 | DBG(dev, "reset_work" NL); | |
722 | ||
723 | mutex_lock(&dev->link_lock); | |
61dbcece BH |
724 | if (dev->opened) { |
725 | emac_netif_stop(dev); | |
726 | emac_full_tx_reset(dev); | |
727 | emac_netif_start(dev); | |
728 | } | |
1d3bb996 DG |
729 | mutex_unlock(&dev->link_lock); |
730 | } | |
731 | ||
732 | static void emac_tx_timeout(struct net_device *ndev) | |
733 | { | |
734 | struct emac_instance *dev = netdev_priv(ndev); | |
735 | ||
736 | DBG(dev, "tx_timeout" NL); | |
737 | ||
738 | schedule_work(&dev->reset_work); | |
739 | } | |
740 | ||
741 | ||
742 | static inline int emac_phy_done(struct emac_instance *dev, u32 stacr) | |
743 | { | |
744 | int done = !!(stacr & EMAC_STACR_OC); | |
745 | ||
746 | if (emac_has_feature(dev, EMAC_FTR_STACR_OC_INVERT)) | |
747 | done = !done; | |
748 | ||
749 | return done; | |
750 | }; | |
751 | ||
752 | static int __emac_mdio_read(struct emac_instance *dev, u8 id, u8 reg) | |
753 | { | |
754 | struct emac_regs __iomem *p = dev->emacp; | |
755 | u32 r = 0; | |
756 | int n, err = -ETIMEDOUT; | |
757 | ||
758 | mutex_lock(&dev->mdio_lock); | |
759 | ||
760 | DBG2(dev, "mdio_read(%02x,%02x)" NL, id, reg); | |
761 | ||
762 | /* Enable proper MDIO port */ | |
763 | if (emac_has_feature(dev, EMAC_FTR_HAS_ZMII)) | |
764 | zmii_get_mdio(dev->zmii_dev, dev->zmii_port); | |
765 | if (emac_has_feature(dev, EMAC_FTR_HAS_RGMII)) | |
766 | rgmii_get_mdio(dev->rgmii_dev, dev->rgmii_port); | |
767 | ||
768 | /* Wait for management interface to become idle */ | |
cca87c18 | 769 | n = 20; |
1d3bb996 DG |
770 | while (!emac_phy_done(dev, in_be32(&p->stacr))) { |
771 | udelay(1); | |
772 | if (!--n) { | |
773 | DBG2(dev, " -> timeout wait idle\n"); | |
774 | goto bail; | |
775 | } | |
776 | } | |
777 | ||
778 | /* Issue read command */ | |
779 | if (emac_has_feature(dev, EMAC_FTR_EMAC4)) | |
780 | r = EMAC4_STACR_BASE(dev->opb_bus_freq); | |
781 | else | |
782 | r = EMAC_STACR_BASE(dev->opb_bus_freq); | |
783 | if (emac_has_feature(dev, EMAC_FTR_STACR_OC_INVERT)) | |
784 | r |= EMAC_STACR_OC; | |
bff713b5 | 785 | if (emac_has_feature(dev, EMAC_FTR_HAS_NEW_STACR)) |
1d3bb996 DG |
786 | r |= EMACX_STACR_STAC_READ; |
787 | else | |
788 | r |= EMAC_STACR_STAC_READ; | |
789 | r |= (reg & EMAC_STACR_PRA_MASK) | |
790 | | ((id & EMAC_STACR_PCDA_MASK) << EMAC_STACR_PCDA_SHIFT); | |
791 | out_be32(&p->stacr, r); | |
792 | ||
793 | /* Wait for read to complete */ | |
cca87c18 | 794 | n = 200; |
1d3bb996 DG |
795 | while (!emac_phy_done(dev, (r = in_be32(&p->stacr)))) { |
796 | udelay(1); | |
797 | if (!--n) { | |
798 | DBG2(dev, " -> timeout wait complete\n"); | |
799 | goto bail; | |
800 | } | |
801 | } | |
802 | ||
803 | if (unlikely(r & EMAC_STACR_PHYE)) { | |
804 | DBG(dev, "mdio_read(%02x, %02x) failed" NL, id, reg); | |
805 | err = -EREMOTEIO; | |
806 | goto bail; | |
807 | } | |
808 | ||
809 | r = ((r >> EMAC_STACR_PHYD_SHIFT) & EMAC_STACR_PHYD_MASK); | |
810 | ||
811 | DBG2(dev, "mdio_read -> %04x" NL, r); | |
812 | err = 0; | |
813 | bail: | |
814 | if (emac_has_feature(dev, EMAC_FTR_HAS_RGMII)) | |
815 | rgmii_put_mdio(dev->rgmii_dev, dev->rgmii_port); | |
816 | if (emac_has_feature(dev, EMAC_FTR_HAS_ZMII)) | |
817 | zmii_put_mdio(dev->zmii_dev, dev->zmii_port); | |
818 | mutex_unlock(&dev->mdio_lock); | |
819 | ||
820 | return err == 0 ? r : err; | |
821 | } | |
822 | ||
823 | static void __emac_mdio_write(struct emac_instance *dev, u8 id, u8 reg, | |
824 | u16 val) | |
825 | { | |
826 | struct emac_regs __iomem *p = dev->emacp; | |
827 | u32 r = 0; | |
828 | int n, err = -ETIMEDOUT; | |
829 | ||
830 | mutex_lock(&dev->mdio_lock); | |
831 | ||
832 | DBG2(dev, "mdio_write(%02x,%02x,%04x)" NL, id, reg, val); | |
833 | ||
834 | /* Enable proper MDIO port */ | |
835 | if (emac_has_feature(dev, EMAC_FTR_HAS_ZMII)) | |
836 | zmii_get_mdio(dev->zmii_dev, dev->zmii_port); | |
837 | if (emac_has_feature(dev, EMAC_FTR_HAS_RGMII)) | |
838 | rgmii_get_mdio(dev->rgmii_dev, dev->rgmii_port); | |
839 | ||
840 | /* Wait for management interface to be idle */ | |
cca87c18 | 841 | n = 20; |
1d3bb996 DG |
842 | while (!emac_phy_done(dev, in_be32(&p->stacr))) { |
843 | udelay(1); | |
844 | if (!--n) { | |
845 | DBG2(dev, " -> timeout wait idle\n"); | |
846 | goto bail; | |
847 | } | |
848 | } | |
849 | ||
850 | /* Issue write command */ | |
851 | if (emac_has_feature(dev, EMAC_FTR_EMAC4)) | |
852 | r = EMAC4_STACR_BASE(dev->opb_bus_freq); | |
853 | else | |
854 | r = EMAC_STACR_BASE(dev->opb_bus_freq); | |
855 | if (emac_has_feature(dev, EMAC_FTR_STACR_OC_INVERT)) | |
856 | r |= EMAC_STACR_OC; | |
bff713b5 | 857 | if (emac_has_feature(dev, EMAC_FTR_HAS_NEW_STACR)) |
1d3bb996 DG |
858 | r |= EMACX_STACR_STAC_WRITE; |
859 | else | |
860 | r |= EMAC_STACR_STAC_WRITE; | |
861 | r |= (reg & EMAC_STACR_PRA_MASK) | | |
862 | ((id & EMAC_STACR_PCDA_MASK) << EMAC_STACR_PCDA_SHIFT) | | |
863 | (val << EMAC_STACR_PHYD_SHIFT); | |
864 | out_be32(&p->stacr, r); | |
865 | ||
866 | /* Wait for write to complete */ | |
cca87c18 | 867 | n = 200; |
1d3bb996 DG |
868 | while (!emac_phy_done(dev, in_be32(&p->stacr))) { |
869 | udelay(1); | |
870 | if (!--n) { | |
871 | DBG2(dev, " -> timeout wait complete\n"); | |
872 | goto bail; | |
873 | } | |
874 | } | |
875 | err = 0; | |
876 | bail: | |
877 | if (emac_has_feature(dev, EMAC_FTR_HAS_RGMII)) | |
878 | rgmii_put_mdio(dev->rgmii_dev, dev->rgmii_port); | |
879 | if (emac_has_feature(dev, EMAC_FTR_HAS_ZMII)) | |
880 | zmii_put_mdio(dev->zmii_dev, dev->zmii_port); | |
881 | mutex_unlock(&dev->mdio_lock); | |
882 | } | |
883 | ||
884 | static int emac_mdio_read(struct net_device *ndev, int id, int reg) | |
885 | { | |
886 | struct emac_instance *dev = netdev_priv(ndev); | |
887 | int res; | |
888 | ||
9e3cb294 VG |
889 | res = __emac_mdio_read((dev->mdio_instance && |
890 | dev->phy.gpcs_address != id) ? | |
891 | dev->mdio_instance : dev, | |
1d3bb996 DG |
892 | (u8) id, (u8) reg); |
893 | return res; | |
894 | } | |
895 | ||
896 | static void emac_mdio_write(struct net_device *ndev, int id, int reg, int val) | |
897 | { | |
898 | struct emac_instance *dev = netdev_priv(ndev); | |
899 | ||
9e3cb294 VG |
900 | __emac_mdio_write((dev->mdio_instance && |
901 | dev->phy.gpcs_address != id) ? | |
902 | dev->mdio_instance : dev, | |
1d3bb996 DG |
903 | (u8) id, (u8) reg, (u16) val); |
904 | } | |
905 | ||
906 | /* Tx lock BH */ | |
907 | static void __emac_set_multicast_list(struct emac_instance *dev) | |
908 | { | |
909 | struct emac_regs __iomem *p = dev->emacp; | |
910 | u32 rmr = emac_iff2rmr(dev->ndev); | |
911 | ||
912 | DBG(dev, "__multicast %08x" NL, rmr); | |
913 | ||
914 | /* I decided to relax register access rules here to avoid | |
915 | * full EMAC reset. | |
916 | * | |
917 | * There is a real problem with EMAC4 core if we use MWSW_001 bit | |
918 | * in MR1 register and do a full EMAC reset. | |
919 | * One TX BD status update is delayed and, after EMAC reset, it | |
920 | * never happens, resulting in TX hung (it'll be recovered by TX | |
921 | * timeout handler eventually, but this is just gross). | |
922 | * So we either have to do full TX reset or try to cheat here :) | |
923 | * | |
924 | * The only required change is to RX mode register, so I *think* all | |
925 | * we need is just to stop RX channel. This seems to work on all | |
926 | * tested SoCs. --ebs | |
927 | * | |
928 | * If we need the full reset, we might just trigger the workqueue | |
929 | * and do it async... a bit nasty but should work --BenH | |
930 | */ | |
931 | dev->mcast_pending = 0; | |
932 | emac_rx_disable(dev); | |
933 | if (rmr & EMAC_RMR_MAE) | |
934 | emac_hash_mc(dev); | |
935 | out_be32(&p->rmr, rmr); | |
936 | emac_rx_enable(dev); | |
937 | } | |
938 | ||
939 | /* Tx lock BH */ | |
940 | static void emac_set_multicast_list(struct net_device *ndev) | |
941 | { | |
942 | struct emac_instance *dev = netdev_priv(ndev); | |
943 | ||
944 | DBG(dev, "multicast" NL); | |
945 | ||
946 | BUG_ON(!netif_running(dev->ndev)); | |
947 | ||
948 | if (dev->no_mcast) { | |
949 | dev->mcast_pending = 1; | |
950 | return; | |
951 | } | |
952 | __emac_set_multicast_list(dev); | |
953 | } | |
954 | ||
955 | static int emac_resize_rx_ring(struct emac_instance *dev, int new_mtu) | |
956 | { | |
957 | int rx_sync_size = emac_rx_sync_size(new_mtu); | |
958 | int rx_skb_size = emac_rx_skb_size(new_mtu); | |
959 | int i, ret = 0; | |
960 | ||
961 | mutex_lock(&dev->link_lock); | |
962 | emac_netif_stop(dev); | |
963 | emac_rx_disable(dev); | |
964 | mal_disable_rx_channel(dev->mal, dev->mal_rx_chan); | |
965 | ||
966 | if (dev->rx_sg_skb) { | |
967 | ++dev->estats.rx_dropped_resize; | |
968 | dev_kfree_skb(dev->rx_sg_skb); | |
969 | dev->rx_sg_skb = NULL; | |
970 | } | |
971 | ||
972 | /* Make a first pass over RX ring and mark BDs ready, dropping | |
973 | * non-processed packets on the way. We need this as a separate pass | |
974 | * to simplify error recovery in the case of allocation failure later. | |
975 | */ | |
976 | for (i = 0; i < NUM_RX_BUFF; ++i) { | |
977 | if (dev->rx_desc[i].ctrl & MAL_RX_CTRL_FIRST) | |
978 | ++dev->estats.rx_dropped_resize; | |
979 | ||
980 | dev->rx_desc[i].data_len = 0; | |
981 | dev->rx_desc[i].ctrl = MAL_RX_CTRL_EMPTY | | |
982 | (i == (NUM_RX_BUFF - 1) ? MAL_RX_CTRL_WRAP : 0); | |
983 | } | |
984 | ||
985 | /* Reallocate RX ring only if bigger skb buffers are required */ | |
986 | if (rx_skb_size <= dev->rx_skb_size) | |
987 | goto skip; | |
988 | ||
989 | /* Second pass, allocate new skbs */ | |
990 | for (i = 0; i < NUM_RX_BUFF; ++i) { | |
991 | struct sk_buff *skb = alloc_skb(rx_skb_size, GFP_ATOMIC); | |
992 | if (!skb) { | |
993 | ret = -ENOMEM; | |
994 | goto oom; | |
995 | } | |
996 | ||
997 | BUG_ON(!dev->rx_skb[i]); | |
998 | dev_kfree_skb(dev->rx_skb[i]); | |
999 | ||
1000 | skb_reserve(skb, EMAC_RX_SKB_HEADROOM + 2); | |
1001 | dev->rx_desc[i].data_ptr = | |
1002 | dma_map_single(&dev->ofdev->dev, skb->data - 2, rx_sync_size, | |
1003 | DMA_FROM_DEVICE) + 2; | |
1004 | dev->rx_skb[i] = skb; | |
1005 | } | |
1006 | skip: | |
1007 | /* Check if we need to change "Jumbo" bit in MR1 */ | |
1008 | if ((new_mtu > ETH_DATA_LEN) ^ (dev->ndev->mtu > ETH_DATA_LEN)) { | |
1009 | /* This is to prevent starting RX channel in emac_rx_enable() */ | |
1010 | set_bit(MAL_COMMAC_RX_STOPPED, &dev->commac.flags); | |
1011 | ||
1012 | dev->ndev->mtu = new_mtu; | |
1013 | emac_full_tx_reset(dev); | |
1014 | } | |
1015 | ||
1016 | mal_set_rcbs(dev->mal, dev->mal_rx_chan, emac_rx_size(new_mtu)); | |
1017 | oom: | |
1018 | /* Restart RX */ | |
1019 | clear_bit(MAL_COMMAC_RX_STOPPED, &dev->commac.flags); | |
1020 | dev->rx_slot = 0; | |
1021 | mal_enable_rx_channel(dev->mal, dev->mal_rx_chan); | |
1022 | emac_rx_enable(dev); | |
1023 | emac_netif_start(dev); | |
1024 | mutex_unlock(&dev->link_lock); | |
1025 | ||
1026 | return ret; | |
1027 | } | |
1028 | ||
1029 | /* Process ctx, rtnl_lock semaphore */ | |
1030 | static int emac_change_mtu(struct net_device *ndev, int new_mtu) | |
1031 | { | |
1032 | struct emac_instance *dev = netdev_priv(ndev); | |
1033 | int ret = 0; | |
1034 | ||
1035 | if (new_mtu < EMAC_MIN_MTU || new_mtu > dev->max_mtu) | |
1036 | return -EINVAL; | |
1037 | ||
1038 | DBG(dev, "change_mtu(%d)" NL, new_mtu); | |
1039 | ||
1040 | if (netif_running(ndev)) { | |
1041 | /* Check if we really need to reinitalize RX ring */ | |
1042 | if (emac_rx_skb_size(ndev->mtu) != emac_rx_skb_size(new_mtu)) | |
1043 | ret = emac_resize_rx_ring(dev, new_mtu); | |
1044 | } | |
1045 | ||
1046 | if (!ret) { | |
1047 | ndev->mtu = new_mtu; | |
1048 | dev->rx_skb_size = emac_rx_skb_size(new_mtu); | |
1049 | dev->rx_sync_size = emac_rx_sync_size(new_mtu); | |
1050 | } | |
1051 | ||
1052 | return ret; | |
1053 | } | |
1054 | ||
1055 | static void emac_clean_tx_ring(struct emac_instance *dev) | |
1056 | { | |
1057 | int i; | |
1058 | ||
1059 | for (i = 0; i < NUM_TX_BUFF; ++i) { | |
1060 | if (dev->tx_skb[i]) { | |
1061 | dev_kfree_skb(dev->tx_skb[i]); | |
1062 | dev->tx_skb[i] = NULL; | |
1063 | if (dev->tx_desc[i].ctrl & MAL_TX_CTRL_READY) | |
1064 | ++dev->estats.tx_dropped; | |
1065 | } | |
1066 | dev->tx_desc[i].ctrl = 0; | |
1067 | dev->tx_desc[i].data_ptr = 0; | |
1068 | } | |
1069 | } | |
1070 | ||
1071 | static void emac_clean_rx_ring(struct emac_instance *dev) | |
1072 | { | |
1073 | int i; | |
1074 | ||
1075 | for (i = 0; i < NUM_RX_BUFF; ++i) | |
1076 | if (dev->rx_skb[i]) { | |
1077 | dev->rx_desc[i].ctrl = 0; | |
1078 | dev_kfree_skb(dev->rx_skb[i]); | |
1079 | dev->rx_skb[i] = NULL; | |
1080 | dev->rx_desc[i].data_ptr = 0; | |
1081 | } | |
1082 | ||
1083 | if (dev->rx_sg_skb) { | |
1084 | dev_kfree_skb(dev->rx_sg_skb); | |
1085 | dev->rx_sg_skb = NULL; | |
1086 | } | |
1087 | } | |
1088 | ||
1089 | static inline int emac_alloc_rx_skb(struct emac_instance *dev, int slot, | |
1090 | gfp_t flags) | |
1091 | { | |
1092 | struct sk_buff *skb = alloc_skb(dev->rx_skb_size, flags); | |
1093 | if (unlikely(!skb)) | |
1094 | return -ENOMEM; | |
1095 | ||
1096 | dev->rx_skb[slot] = skb; | |
1097 | dev->rx_desc[slot].data_len = 0; | |
1098 | ||
1099 | skb_reserve(skb, EMAC_RX_SKB_HEADROOM + 2); | |
1100 | dev->rx_desc[slot].data_ptr = | |
1101 | dma_map_single(&dev->ofdev->dev, skb->data - 2, dev->rx_sync_size, | |
1102 | DMA_FROM_DEVICE) + 2; | |
1103 | wmb(); | |
1104 | dev->rx_desc[slot].ctrl = MAL_RX_CTRL_EMPTY | | |
1105 | (slot == (NUM_RX_BUFF - 1) ? MAL_RX_CTRL_WRAP : 0); | |
1106 | ||
1107 | return 0; | |
1108 | } | |
1109 | ||
1110 | static void emac_print_link_status(struct emac_instance *dev) | |
1111 | { | |
1112 | if (netif_carrier_ok(dev->ndev)) | |
1113 | printk(KERN_INFO "%s: link is up, %d %s%s\n", | |
1114 | dev->ndev->name, dev->phy.speed, | |
1115 | dev->phy.duplex == DUPLEX_FULL ? "FDX" : "HDX", | |
1116 | dev->phy.pause ? ", pause enabled" : | |
1117 | dev->phy.asym_pause ? ", asymmetric pause enabled" : ""); | |
1118 | else | |
1119 | printk(KERN_INFO "%s: link is down\n", dev->ndev->name); | |
1120 | } | |
1121 | ||
1122 | /* Process ctx, rtnl_lock semaphore */ | |
1123 | static int emac_open(struct net_device *ndev) | |
1124 | { | |
1125 | struct emac_instance *dev = netdev_priv(ndev); | |
1126 | int err, i; | |
1127 | ||
1128 | DBG(dev, "open" NL); | |
1129 | ||
1130 | /* Setup error IRQ handler */ | |
1131 | err = request_irq(dev->emac_irq, emac_irq, 0, "EMAC", dev); | |
1132 | if (err) { | |
1133 | printk(KERN_ERR "%s: failed to request IRQ %d\n", | |
1134 | ndev->name, dev->emac_irq); | |
1135 | return err; | |
1136 | } | |
1137 | ||
1138 | /* Allocate RX ring */ | |
1139 | for (i = 0; i < NUM_RX_BUFF; ++i) | |
1140 | if (emac_alloc_rx_skb(dev, i, GFP_KERNEL)) { | |
1141 | printk(KERN_ERR "%s: failed to allocate RX ring\n", | |
1142 | ndev->name); | |
1143 | goto oom; | |
1144 | } | |
1145 | ||
1146 | dev->tx_cnt = dev->tx_slot = dev->ack_slot = dev->rx_slot = 0; | |
1147 | clear_bit(MAL_COMMAC_RX_STOPPED, &dev->commac.flags); | |
1148 | dev->rx_sg_skb = NULL; | |
1149 | ||
1150 | mutex_lock(&dev->link_lock); | |
61dbcece | 1151 | dev->opened = 1; |
1d3bb996 | 1152 | |
61dbcece | 1153 | /* Start PHY polling now. |
1d3bb996 DG |
1154 | */ |
1155 | if (dev->phy.address >= 0) { | |
1156 | int link_poll_interval; | |
1157 | if (dev->phy.def->ops->poll_link(&dev->phy)) { | |
1158 | dev->phy.def->ops->read_link(&dev->phy); | |
11121e30 | 1159 | emac_rx_clk_default(dev); |
1d3bb996 DG |
1160 | netif_carrier_on(dev->ndev); |
1161 | link_poll_interval = PHY_POLL_LINK_ON; | |
1162 | } else { | |
11121e30 | 1163 | emac_rx_clk_tx(dev); |
1d3bb996 DG |
1164 | netif_carrier_off(dev->ndev); |
1165 | link_poll_interval = PHY_POLL_LINK_OFF; | |
1166 | } | |
1167 | dev->link_polling = 1; | |
1168 | wmb(); | |
1169 | schedule_delayed_work(&dev->link_work, link_poll_interval); | |
1170 | emac_print_link_status(dev); | |
1171 | } else | |
1172 | netif_carrier_on(dev->ndev); | |
1173 | ||
e8296582 BH |
1174 | /* Required for Pause packet support in EMAC */ |
1175 | dev_mc_add(ndev, default_mcast_addr, sizeof(default_mcast_addr), 1); | |
1176 | ||
1d3bb996 DG |
1177 | emac_configure(dev); |
1178 | mal_poll_add(dev->mal, &dev->commac); | |
1179 | mal_enable_tx_channel(dev->mal, dev->mal_tx_chan); | |
1180 | mal_set_rcbs(dev->mal, dev->mal_rx_chan, emac_rx_size(ndev->mtu)); | |
1181 | mal_enable_rx_channel(dev->mal, dev->mal_rx_chan); | |
1182 | emac_tx_enable(dev); | |
1183 | emac_rx_enable(dev); | |
1184 | emac_netif_start(dev); | |
1185 | ||
1186 | mutex_unlock(&dev->link_lock); | |
1187 | ||
1188 | return 0; | |
1189 | oom: | |
1190 | emac_clean_rx_ring(dev); | |
1191 | free_irq(dev->emac_irq, dev); | |
1192 | ||
1193 | return -ENOMEM; | |
1194 | } | |
1195 | ||
1196 | /* BHs disabled */ | |
1197 | #if 0 | |
1198 | static int emac_link_differs(struct emac_instance *dev) | |
1199 | { | |
1200 | u32 r = in_be32(&dev->emacp->mr1); | |
1201 | ||
1202 | int duplex = r & EMAC_MR1_FDE ? DUPLEX_FULL : DUPLEX_HALF; | |
1203 | int speed, pause, asym_pause; | |
1204 | ||
1205 | if (r & EMAC_MR1_MF_1000) | |
1206 | speed = SPEED_1000; | |
1207 | else if (r & EMAC_MR1_MF_100) | |
1208 | speed = SPEED_100; | |
1209 | else | |
1210 | speed = SPEED_10; | |
1211 | ||
1212 | switch (r & (EMAC_MR1_EIFC | EMAC_MR1_APP)) { | |
1213 | case (EMAC_MR1_EIFC | EMAC_MR1_APP): | |
1214 | pause = 1; | |
1215 | asym_pause = 0; | |
1216 | break; | |
1217 | case EMAC_MR1_APP: | |
1218 | pause = 0; | |
1219 | asym_pause = 1; | |
1220 | break; | |
1221 | default: | |
1222 | pause = asym_pause = 0; | |
1223 | } | |
1224 | return speed != dev->phy.speed || duplex != dev->phy.duplex || | |
1225 | pause != dev->phy.pause || asym_pause != dev->phy.asym_pause; | |
1226 | } | |
1227 | #endif | |
1228 | ||
1229 | static void emac_link_timer(struct work_struct *work) | |
1230 | { | |
1231 | struct emac_instance *dev = | |
10fd9d7e | 1232 | container_of(to_delayed_work(work), |
1d3bb996 DG |
1233 | struct emac_instance, link_work); |
1234 | int link_poll_interval; | |
1235 | ||
1236 | mutex_lock(&dev->link_lock); | |
1d3bb996 DG |
1237 | DBG2(dev, "link timer" NL); |
1238 | ||
61dbcece BH |
1239 | if (!dev->opened) |
1240 | goto bail; | |
1241 | ||
1d3bb996 DG |
1242 | if (dev->phy.def->ops->poll_link(&dev->phy)) { |
1243 | if (!netif_carrier_ok(dev->ndev)) { | |
11121e30 | 1244 | emac_rx_clk_default(dev); |
1d3bb996 DG |
1245 | /* Get new link parameters */ |
1246 | dev->phy.def->ops->read_link(&dev->phy); | |
1247 | ||
1248 | netif_carrier_on(dev->ndev); | |
1249 | emac_netif_stop(dev); | |
1250 | emac_full_tx_reset(dev); | |
1251 | emac_netif_start(dev); | |
1252 | emac_print_link_status(dev); | |
1253 | } | |
1254 | link_poll_interval = PHY_POLL_LINK_ON; | |
1255 | } else { | |
1256 | if (netif_carrier_ok(dev->ndev)) { | |
11121e30 | 1257 | emac_rx_clk_tx(dev); |
1d3bb996 DG |
1258 | netif_carrier_off(dev->ndev); |
1259 | netif_tx_disable(dev->ndev); | |
911b237d | 1260 | emac_reinitialize(dev); |
1d3bb996 DG |
1261 | emac_print_link_status(dev); |
1262 | } | |
1263 | link_poll_interval = PHY_POLL_LINK_OFF; | |
1264 | } | |
1265 | schedule_delayed_work(&dev->link_work, link_poll_interval); | |
61dbcece | 1266 | bail: |
1d3bb996 DG |
1267 | mutex_unlock(&dev->link_lock); |
1268 | } | |
1269 | ||
1270 | static void emac_force_link_update(struct emac_instance *dev) | |
1271 | { | |
1272 | netif_carrier_off(dev->ndev); | |
61dbcece | 1273 | smp_rmb(); |
1d3bb996 DG |
1274 | if (dev->link_polling) { |
1275 | cancel_rearming_delayed_work(&dev->link_work); | |
1276 | if (dev->link_polling) | |
1277 | schedule_delayed_work(&dev->link_work, PHY_POLL_LINK_OFF); | |
1278 | } | |
1279 | } | |
1280 | ||
1281 | /* Process ctx, rtnl_lock semaphore */ | |
1282 | static int emac_close(struct net_device *ndev) | |
1283 | { | |
1284 | struct emac_instance *dev = netdev_priv(ndev); | |
1285 | ||
1286 | DBG(dev, "close" NL); | |
1287 | ||
61dbcece BH |
1288 | if (dev->phy.address >= 0) { |
1289 | dev->link_polling = 0; | |
1d3bb996 | 1290 | cancel_rearming_delayed_work(&dev->link_work); |
61dbcece BH |
1291 | } |
1292 | mutex_lock(&dev->link_lock); | |
1d3bb996 | 1293 | emac_netif_stop(dev); |
61dbcece BH |
1294 | dev->opened = 0; |
1295 | mutex_unlock(&dev->link_lock); | |
1d3bb996 DG |
1296 | |
1297 | emac_rx_disable(dev); | |
1298 | emac_tx_disable(dev); | |
1299 | mal_disable_rx_channel(dev->mal, dev->mal_rx_chan); | |
1300 | mal_disable_tx_channel(dev->mal, dev->mal_tx_chan); | |
1301 | mal_poll_del(dev->mal, &dev->commac); | |
1302 | ||
1303 | emac_clean_tx_ring(dev); | |
1304 | emac_clean_rx_ring(dev); | |
1305 | ||
1306 | free_irq(dev->emac_irq, dev); | |
1307 | ||
d3b325f9 PG |
1308 | netif_carrier_off(ndev); |
1309 | ||
1d3bb996 DG |
1310 | return 0; |
1311 | } | |
1312 | ||
1313 | static inline u16 emac_tx_csum(struct emac_instance *dev, | |
1314 | struct sk_buff *skb) | |
1315 | { | |
e66f4168 VB |
1316 | if (emac_has_feature(dev, EMAC_FTR_HAS_TAH) && |
1317 | (skb->ip_summed == CHECKSUM_PARTIAL)) { | |
1d3bb996 DG |
1318 | ++dev->stats.tx_packets_csum; |
1319 | return EMAC_TX_CTRL_TAH_CSUM; | |
1320 | } | |
1321 | return 0; | |
1322 | } | |
1323 | ||
1324 | static inline int emac_xmit_finish(struct emac_instance *dev, int len) | |
1325 | { | |
1326 | struct emac_regs __iomem *p = dev->emacp; | |
1327 | struct net_device *ndev = dev->ndev; | |
1328 | ||
1329 | /* Send the packet out. If the if makes a significant perf | |
1330 | * difference, then we can store the TMR0 value in "dev" | |
1331 | * instead | |
1332 | */ | |
1333 | if (emac_has_feature(dev, EMAC_FTR_EMAC4)) | |
1d3bb996 | 1334 | out_be32(&p->tmr0, EMAC4_TMR0_XMIT); |
07c2c76e | 1335 | else |
1336 | out_be32(&p->tmr0, EMAC_TMR0_XMIT); | |
1d3bb996 DG |
1337 | |
1338 | if (unlikely(++dev->tx_cnt == NUM_TX_BUFF)) { | |
1339 | netif_stop_queue(ndev); | |
1340 | DBG2(dev, "stopped TX queue" NL); | |
1341 | } | |
1342 | ||
1343 | ndev->trans_start = jiffies; | |
1344 | ++dev->stats.tx_packets; | |
1345 | dev->stats.tx_bytes += len; | |
1346 | ||
ec634fe3 | 1347 | return NETDEV_TX_OK; |
1d3bb996 DG |
1348 | } |
1349 | ||
1350 | /* Tx lock BH */ | |
1351 | static int emac_start_xmit(struct sk_buff *skb, struct net_device *ndev) | |
1352 | { | |
1353 | struct emac_instance *dev = netdev_priv(ndev); | |
1354 | unsigned int len = skb->len; | |
1355 | int slot; | |
1356 | ||
1357 | u16 ctrl = EMAC_TX_CTRL_GFCS | EMAC_TX_CTRL_GP | MAL_TX_CTRL_READY | | |
1358 | MAL_TX_CTRL_LAST | emac_tx_csum(dev, skb); | |
1359 | ||
1360 | slot = dev->tx_slot++; | |
1361 | if (dev->tx_slot == NUM_TX_BUFF) { | |
1362 | dev->tx_slot = 0; | |
1363 | ctrl |= MAL_TX_CTRL_WRAP; | |
1364 | } | |
1365 | ||
1366 | DBG2(dev, "xmit(%u) %d" NL, len, slot); | |
1367 | ||
1368 | dev->tx_skb[slot] = skb; | |
1369 | dev->tx_desc[slot].data_ptr = dma_map_single(&dev->ofdev->dev, | |
1370 | skb->data, len, | |
1371 | DMA_TO_DEVICE); | |
1372 | dev->tx_desc[slot].data_len = (u16) len; | |
1373 | wmb(); | |
1374 | dev->tx_desc[slot].ctrl = ctrl; | |
1375 | ||
1376 | return emac_xmit_finish(dev, len); | |
1377 | } | |
1378 | ||
1d3bb996 DG |
1379 | static inline int emac_xmit_split(struct emac_instance *dev, int slot, |
1380 | u32 pd, int len, int last, u16 base_ctrl) | |
1381 | { | |
1382 | while (1) { | |
1383 | u16 ctrl = base_ctrl; | |
1384 | int chunk = min(len, MAL_MAX_TX_SIZE); | |
1385 | len -= chunk; | |
1386 | ||
1387 | slot = (slot + 1) % NUM_TX_BUFF; | |
1388 | ||
1389 | if (last && !len) | |
1390 | ctrl |= MAL_TX_CTRL_LAST; | |
1391 | if (slot == NUM_TX_BUFF - 1) | |
1392 | ctrl |= MAL_TX_CTRL_WRAP; | |
1393 | ||
1394 | dev->tx_skb[slot] = NULL; | |
1395 | dev->tx_desc[slot].data_ptr = pd; | |
1396 | dev->tx_desc[slot].data_len = (u16) chunk; | |
1397 | dev->tx_desc[slot].ctrl = ctrl; | |
1398 | ++dev->tx_cnt; | |
1399 | ||
1400 | if (!len) | |
1401 | break; | |
1402 | ||
1403 | pd += chunk; | |
1404 | } | |
1405 | return slot; | |
1406 | } | |
1407 | ||
1408 | /* Tx lock BH disabled (SG version for TAH equipped EMACs) */ | |
1409 | static int emac_start_xmit_sg(struct sk_buff *skb, struct net_device *ndev) | |
1410 | { | |
1411 | struct emac_instance *dev = netdev_priv(ndev); | |
1412 | int nr_frags = skb_shinfo(skb)->nr_frags; | |
1413 | int len = skb->len, chunk; | |
1414 | int slot, i; | |
1415 | u16 ctrl; | |
1416 | u32 pd; | |
1417 | ||
1418 | /* This is common "fast" path */ | |
1419 | if (likely(!nr_frags && len <= MAL_MAX_TX_SIZE)) | |
1420 | return emac_start_xmit(skb, ndev); | |
1421 | ||
1422 | len -= skb->data_len; | |
1423 | ||
1424 | /* Note, this is only an *estimation*, we can still run out of empty | |
1425 | * slots because of the additional fragmentation into | |
1426 | * MAL_MAX_TX_SIZE-sized chunks | |
1427 | */ | |
1428 | if (unlikely(dev->tx_cnt + nr_frags + mal_tx_chunks(len) > NUM_TX_BUFF)) | |
1429 | goto stop_queue; | |
1430 | ||
1431 | ctrl = EMAC_TX_CTRL_GFCS | EMAC_TX_CTRL_GP | MAL_TX_CTRL_READY | | |
1432 | emac_tx_csum(dev, skb); | |
1433 | slot = dev->tx_slot; | |
1434 | ||
1435 | /* skb data */ | |
1436 | dev->tx_skb[slot] = NULL; | |
1437 | chunk = min(len, MAL_MAX_TX_SIZE); | |
1438 | dev->tx_desc[slot].data_ptr = pd = | |
1439 | dma_map_single(&dev->ofdev->dev, skb->data, len, DMA_TO_DEVICE); | |
1440 | dev->tx_desc[slot].data_len = (u16) chunk; | |
1441 | len -= chunk; | |
1442 | if (unlikely(len)) | |
1443 | slot = emac_xmit_split(dev, slot, pd + chunk, len, !nr_frags, | |
1444 | ctrl); | |
1445 | /* skb fragments */ | |
1446 | for (i = 0; i < nr_frags; ++i) { | |
1447 | struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[i]; | |
1448 | len = frag->size; | |
1449 | ||
1450 | if (unlikely(dev->tx_cnt + mal_tx_chunks(len) >= NUM_TX_BUFF)) | |
1451 | goto undo_frame; | |
1452 | ||
1453 | pd = dma_map_page(&dev->ofdev->dev, frag->page, frag->page_offset, len, | |
1454 | DMA_TO_DEVICE); | |
1455 | ||
1456 | slot = emac_xmit_split(dev, slot, pd, len, i == nr_frags - 1, | |
1457 | ctrl); | |
1458 | } | |
1459 | ||
1460 | DBG2(dev, "xmit_sg(%u) %d - %d" NL, skb->len, dev->tx_slot, slot); | |
1461 | ||
1462 | /* Attach skb to the last slot so we don't release it too early */ | |
1463 | dev->tx_skb[slot] = skb; | |
1464 | ||
1465 | /* Send the packet out */ | |
1466 | if (dev->tx_slot == NUM_TX_BUFF - 1) | |
1467 | ctrl |= MAL_TX_CTRL_WRAP; | |
1468 | wmb(); | |
1469 | dev->tx_desc[dev->tx_slot].ctrl = ctrl; | |
1470 | dev->tx_slot = (slot + 1) % NUM_TX_BUFF; | |
1471 | ||
1472 | return emac_xmit_finish(dev, skb->len); | |
1473 | ||
1474 | undo_frame: | |
1475 | /* Well, too bad. Our previous estimation was overly optimistic. | |
1476 | * Undo everything. | |
1477 | */ | |
1478 | while (slot != dev->tx_slot) { | |
1479 | dev->tx_desc[slot].ctrl = 0; | |
1480 | --dev->tx_cnt; | |
1481 | if (--slot < 0) | |
1482 | slot = NUM_TX_BUFF - 1; | |
1483 | } | |
1484 | ++dev->estats.tx_undo; | |
1485 | ||
1486 | stop_queue: | |
1487 | netif_stop_queue(ndev); | |
1488 | DBG2(dev, "stopped TX queue" NL); | |
5b548140 | 1489 | return NETDEV_TX_BUSY; |
1d3bb996 | 1490 | } |
1d3bb996 DG |
1491 | |
1492 | /* Tx lock BHs */ | |
1493 | static void emac_parse_tx_error(struct emac_instance *dev, u16 ctrl) | |
1494 | { | |
1495 | struct emac_error_stats *st = &dev->estats; | |
1496 | ||
1497 | DBG(dev, "BD TX error %04x" NL, ctrl); | |
1498 | ||
1499 | ++st->tx_bd_errors; | |
1500 | if (ctrl & EMAC_TX_ST_BFCS) | |
1501 | ++st->tx_bd_bad_fcs; | |
1502 | if (ctrl & EMAC_TX_ST_LCS) | |
1503 | ++st->tx_bd_carrier_loss; | |
1504 | if (ctrl & EMAC_TX_ST_ED) | |
1505 | ++st->tx_bd_excessive_deferral; | |
1506 | if (ctrl & EMAC_TX_ST_EC) | |
1507 | ++st->tx_bd_excessive_collisions; | |
1508 | if (ctrl & EMAC_TX_ST_LC) | |
1509 | ++st->tx_bd_late_collision; | |
1510 | if (ctrl & EMAC_TX_ST_MC) | |
1511 | ++st->tx_bd_multple_collisions; | |
1512 | if (ctrl & EMAC_TX_ST_SC) | |
1513 | ++st->tx_bd_single_collision; | |
1514 | if (ctrl & EMAC_TX_ST_UR) | |
1515 | ++st->tx_bd_underrun; | |
1516 | if (ctrl & EMAC_TX_ST_SQE) | |
1517 | ++st->tx_bd_sqe; | |
1518 | } | |
1519 | ||
1520 | static void emac_poll_tx(void *param) | |
1521 | { | |
1522 | struct emac_instance *dev = param; | |
1523 | u32 bad_mask; | |
1524 | ||
1525 | DBG2(dev, "poll_tx, %d %d" NL, dev->tx_cnt, dev->ack_slot); | |
1526 | ||
1527 | if (emac_has_feature(dev, EMAC_FTR_HAS_TAH)) | |
1528 | bad_mask = EMAC_IS_BAD_TX_TAH; | |
1529 | else | |
1530 | bad_mask = EMAC_IS_BAD_TX; | |
1531 | ||
1532 | netif_tx_lock_bh(dev->ndev); | |
1533 | if (dev->tx_cnt) { | |
1534 | u16 ctrl; | |
1535 | int slot = dev->ack_slot, n = 0; | |
1536 | again: | |
1537 | ctrl = dev->tx_desc[slot].ctrl; | |
1538 | if (!(ctrl & MAL_TX_CTRL_READY)) { | |
1539 | struct sk_buff *skb = dev->tx_skb[slot]; | |
1540 | ++n; | |
1541 | ||
1542 | if (skb) { | |
1543 | dev_kfree_skb(skb); | |
1544 | dev->tx_skb[slot] = NULL; | |
1545 | } | |
1546 | slot = (slot + 1) % NUM_TX_BUFF; | |
1547 | ||
1548 | if (unlikely(ctrl & bad_mask)) | |
1549 | emac_parse_tx_error(dev, ctrl); | |
1550 | ||
1551 | if (--dev->tx_cnt) | |
1552 | goto again; | |
1553 | } | |
1554 | if (n) { | |
1555 | dev->ack_slot = slot; | |
1556 | if (netif_queue_stopped(dev->ndev) && | |
1557 | dev->tx_cnt < EMAC_TX_WAKEUP_THRESH) | |
1558 | netif_wake_queue(dev->ndev); | |
1559 | ||
1560 | DBG2(dev, "tx %d pkts" NL, n); | |
1561 | } | |
1562 | } | |
1563 | netif_tx_unlock_bh(dev->ndev); | |
1564 | } | |
1565 | ||
1566 | static inline void emac_recycle_rx_skb(struct emac_instance *dev, int slot, | |
1567 | int len) | |
1568 | { | |
1569 | struct sk_buff *skb = dev->rx_skb[slot]; | |
1570 | ||
1571 | DBG2(dev, "recycle %d %d" NL, slot, len); | |
1572 | ||
1573 | if (len) | |
1574 | dma_map_single(&dev->ofdev->dev, skb->data - 2, | |
1575 | EMAC_DMA_ALIGN(len + 2), DMA_FROM_DEVICE); | |
1576 | ||
1577 | dev->rx_desc[slot].data_len = 0; | |
1578 | wmb(); | |
1579 | dev->rx_desc[slot].ctrl = MAL_RX_CTRL_EMPTY | | |
1580 | (slot == (NUM_RX_BUFF - 1) ? MAL_RX_CTRL_WRAP : 0); | |
1581 | } | |
1582 | ||
1583 | static void emac_parse_rx_error(struct emac_instance *dev, u16 ctrl) | |
1584 | { | |
1585 | struct emac_error_stats *st = &dev->estats; | |
1586 | ||
1587 | DBG(dev, "BD RX error %04x" NL, ctrl); | |
1588 | ||
1589 | ++st->rx_bd_errors; | |
1590 | if (ctrl & EMAC_RX_ST_OE) | |
1591 | ++st->rx_bd_overrun; | |
1592 | if (ctrl & EMAC_RX_ST_BP) | |
1593 | ++st->rx_bd_bad_packet; | |
1594 | if (ctrl & EMAC_RX_ST_RP) | |
1595 | ++st->rx_bd_runt_packet; | |
1596 | if (ctrl & EMAC_RX_ST_SE) | |
1597 | ++st->rx_bd_short_event; | |
1598 | if (ctrl & EMAC_RX_ST_AE) | |
1599 | ++st->rx_bd_alignment_error; | |
1600 | if (ctrl & EMAC_RX_ST_BFCS) | |
1601 | ++st->rx_bd_bad_fcs; | |
1602 | if (ctrl & EMAC_RX_ST_PTL) | |
1603 | ++st->rx_bd_packet_too_long; | |
1604 | if (ctrl & EMAC_RX_ST_ORE) | |
1605 | ++st->rx_bd_out_of_range; | |
1606 | if (ctrl & EMAC_RX_ST_IRE) | |
1607 | ++st->rx_bd_in_range; | |
1608 | } | |
1609 | ||
1610 | static inline void emac_rx_csum(struct emac_instance *dev, | |
1611 | struct sk_buff *skb, u16 ctrl) | |
1612 | { | |
1613 | #ifdef CONFIG_IBM_NEW_EMAC_TAH | |
1614 | if (!ctrl && dev->tah_dev) { | |
1615 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
1616 | ++dev->stats.rx_packets_csum; | |
1617 | } | |
1618 | #endif | |
1619 | } | |
1620 | ||
1621 | static inline int emac_rx_sg_append(struct emac_instance *dev, int slot) | |
1622 | { | |
1623 | if (likely(dev->rx_sg_skb != NULL)) { | |
1624 | int len = dev->rx_desc[slot].data_len; | |
1625 | int tot_len = dev->rx_sg_skb->len + len; | |
1626 | ||
1627 | if (unlikely(tot_len + 2 > dev->rx_skb_size)) { | |
1628 | ++dev->estats.rx_dropped_mtu; | |
1629 | dev_kfree_skb(dev->rx_sg_skb); | |
1630 | dev->rx_sg_skb = NULL; | |
1631 | } else { | |
bef1bc95 | 1632 | cacheable_memcpy(skb_tail_pointer(dev->rx_sg_skb), |
1d3bb996 DG |
1633 | dev->rx_skb[slot]->data, len); |
1634 | skb_put(dev->rx_sg_skb, len); | |
1635 | emac_recycle_rx_skb(dev, slot, len); | |
1636 | return 0; | |
1637 | } | |
1638 | } | |
1639 | emac_recycle_rx_skb(dev, slot, 0); | |
1640 | return -1; | |
1641 | } | |
1642 | ||
1643 | /* NAPI poll context */ | |
1644 | static int emac_poll_rx(void *param, int budget) | |
1645 | { | |
1646 | struct emac_instance *dev = param; | |
1647 | int slot = dev->rx_slot, received = 0; | |
1648 | ||
1649 | DBG2(dev, "poll_rx(%d)" NL, budget); | |
1650 | ||
1651 | again: | |
1652 | while (budget > 0) { | |
1653 | int len; | |
1654 | struct sk_buff *skb; | |
1655 | u16 ctrl = dev->rx_desc[slot].ctrl; | |
1656 | ||
1657 | if (ctrl & MAL_RX_CTRL_EMPTY) | |
1658 | break; | |
1659 | ||
1660 | skb = dev->rx_skb[slot]; | |
1661 | mb(); | |
1662 | len = dev->rx_desc[slot].data_len; | |
1663 | ||
1664 | if (unlikely(!MAL_IS_SINGLE_RX(ctrl))) | |
1665 | goto sg; | |
1666 | ||
1667 | ctrl &= EMAC_BAD_RX_MASK; | |
1668 | if (unlikely(ctrl && ctrl != EMAC_RX_TAH_BAD_CSUM)) { | |
1669 | emac_parse_rx_error(dev, ctrl); | |
1670 | ++dev->estats.rx_dropped_error; | |
1671 | emac_recycle_rx_skb(dev, slot, 0); | |
1672 | len = 0; | |
1673 | goto next; | |
1674 | } | |
6c688f42 SN |
1675 | |
1676 | if (len < ETH_HLEN) { | |
1677 | ++dev->estats.rx_dropped_stack; | |
1678 | emac_recycle_rx_skb(dev, slot, len); | |
1679 | goto next; | |
1680 | } | |
1d3bb996 DG |
1681 | |
1682 | if (len && len < EMAC_RX_COPY_THRESH) { | |
1683 | struct sk_buff *copy_skb = | |
1684 | alloc_skb(len + EMAC_RX_SKB_HEADROOM + 2, GFP_ATOMIC); | |
1685 | if (unlikely(!copy_skb)) | |
1686 | goto oom; | |
1687 | ||
1688 | skb_reserve(copy_skb, EMAC_RX_SKB_HEADROOM + 2); | |
1689 | cacheable_memcpy(copy_skb->data - 2, skb->data - 2, | |
1690 | len + 2); | |
1691 | emac_recycle_rx_skb(dev, slot, len); | |
1692 | skb = copy_skb; | |
1693 | } else if (unlikely(emac_alloc_rx_skb(dev, slot, GFP_ATOMIC))) | |
1694 | goto oom; | |
1695 | ||
1696 | skb_put(skb, len); | |
1697 | push_packet: | |
1698 | skb->dev = dev->ndev; | |
1699 | skb->protocol = eth_type_trans(skb, dev->ndev); | |
1700 | emac_rx_csum(dev, skb, ctrl); | |
1701 | ||
1702 | if (unlikely(netif_receive_skb(skb) == NET_RX_DROP)) | |
1703 | ++dev->estats.rx_dropped_stack; | |
1704 | next: | |
1705 | ++dev->stats.rx_packets; | |
1706 | skip: | |
1707 | dev->stats.rx_bytes += len; | |
1708 | slot = (slot + 1) % NUM_RX_BUFF; | |
1709 | --budget; | |
1710 | ++received; | |
1711 | continue; | |
1712 | sg: | |
1713 | if (ctrl & MAL_RX_CTRL_FIRST) { | |
1714 | BUG_ON(dev->rx_sg_skb); | |
1715 | if (unlikely(emac_alloc_rx_skb(dev, slot, GFP_ATOMIC))) { | |
1716 | DBG(dev, "rx OOM %d" NL, slot); | |
1717 | ++dev->estats.rx_dropped_oom; | |
1718 | emac_recycle_rx_skb(dev, slot, 0); | |
1719 | } else { | |
1720 | dev->rx_sg_skb = skb; | |
1721 | skb_put(skb, len); | |
1722 | } | |
1723 | } else if (!emac_rx_sg_append(dev, slot) && | |
1724 | (ctrl & MAL_RX_CTRL_LAST)) { | |
1725 | ||
1726 | skb = dev->rx_sg_skb; | |
1727 | dev->rx_sg_skb = NULL; | |
1728 | ||
1729 | ctrl &= EMAC_BAD_RX_MASK; | |
1730 | if (unlikely(ctrl && ctrl != EMAC_RX_TAH_BAD_CSUM)) { | |
1731 | emac_parse_rx_error(dev, ctrl); | |
1732 | ++dev->estats.rx_dropped_error; | |
1733 | dev_kfree_skb(skb); | |
1734 | len = 0; | |
1735 | } else | |
1736 | goto push_packet; | |
1737 | } | |
1738 | goto skip; | |
1739 | oom: | |
1740 | DBG(dev, "rx OOM %d" NL, slot); | |
1741 | /* Drop the packet and recycle skb */ | |
1742 | ++dev->estats.rx_dropped_oom; | |
1743 | emac_recycle_rx_skb(dev, slot, 0); | |
1744 | goto next; | |
1745 | } | |
1746 | ||
1747 | if (received) { | |
1748 | DBG2(dev, "rx %d BDs" NL, received); | |
1749 | dev->rx_slot = slot; | |
1750 | } | |
1751 | ||
1752 | if (unlikely(budget && test_bit(MAL_COMMAC_RX_STOPPED, &dev->commac.flags))) { | |
1753 | mb(); | |
1754 | if (!(dev->rx_desc[slot].ctrl & MAL_RX_CTRL_EMPTY)) { | |
1755 | DBG2(dev, "rx restart" NL); | |
1756 | received = 0; | |
1757 | goto again; | |
1758 | } | |
1759 | ||
1760 | if (dev->rx_sg_skb) { | |
1761 | DBG2(dev, "dropping partial rx packet" NL); | |
1762 | ++dev->estats.rx_dropped_error; | |
1763 | dev_kfree_skb(dev->rx_sg_skb); | |
1764 | dev->rx_sg_skb = NULL; | |
1765 | } | |
1766 | ||
1767 | clear_bit(MAL_COMMAC_RX_STOPPED, &dev->commac.flags); | |
1768 | mal_enable_rx_channel(dev->mal, dev->mal_rx_chan); | |
1769 | emac_rx_enable(dev); | |
1770 | dev->rx_slot = 0; | |
1771 | } | |
1772 | return received; | |
1773 | } | |
1774 | ||
1775 | /* NAPI poll context */ | |
1776 | static int emac_peek_rx(void *param) | |
1777 | { | |
1778 | struct emac_instance *dev = param; | |
1779 | ||
1780 | return !(dev->rx_desc[dev->rx_slot].ctrl & MAL_RX_CTRL_EMPTY); | |
1781 | } | |
1782 | ||
1783 | /* NAPI poll context */ | |
1784 | static int emac_peek_rx_sg(void *param) | |
1785 | { | |
1786 | struct emac_instance *dev = param; | |
1787 | ||
1788 | int slot = dev->rx_slot; | |
1789 | while (1) { | |
1790 | u16 ctrl = dev->rx_desc[slot].ctrl; | |
1791 | if (ctrl & MAL_RX_CTRL_EMPTY) | |
1792 | return 0; | |
1793 | else if (ctrl & MAL_RX_CTRL_LAST) | |
1794 | return 1; | |
1795 | ||
1796 | slot = (slot + 1) % NUM_RX_BUFF; | |
1797 | ||
1798 | /* I'm just being paranoid here :) */ | |
1799 | if (unlikely(slot == dev->rx_slot)) | |
1800 | return 0; | |
1801 | } | |
1802 | } | |
1803 | ||
1804 | /* Hard IRQ */ | |
1805 | static void emac_rxde(void *param) | |
1806 | { | |
1807 | struct emac_instance *dev = param; | |
1808 | ||
1809 | ++dev->estats.rx_stopped; | |
1810 | emac_rx_disable_async(dev); | |
1811 | } | |
1812 | ||
1813 | /* Hard IRQ */ | |
1814 | static irqreturn_t emac_irq(int irq, void *dev_instance) | |
1815 | { | |
1816 | struct emac_instance *dev = dev_instance; | |
1817 | struct emac_regs __iomem *p = dev->emacp; | |
1818 | struct emac_error_stats *st = &dev->estats; | |
1819 | u32 isr; | |
1820 | ||
1821 | spin_lock(&dev->lock); | |
1822 | ||
1823 | isr = in_be32(&p->isr); | |
1824 | out_be32(&p->isr, isr); | |
1825 | ||
1826 | DBG(dev, "isr = %08x" NL, isr); | |
1827 | ||
1828 | if (isr & EMAC4_ISR_TXPE) | |
1829 | ++st->tx_parity; | |
1830 | if (isr & EMAC4_ISR_RXPE) | |
1831 | ++st->rx_parity; | |
1832 | if (isr & EMAC4_ISR_TXUE) | |
1833 | ++st->tx_underrun; | |
1834 | if (isr & EMAC4_ISR_RXOE) | |
1835 | ++st->rx_fifo_overrun; | |
1836 | if (isr & EMAC_ISR_OVR) | |
1837 | ++st->rx_overrun; | |
1838 | if (isr & EMAC_ISR_BP) | |
1839 | ++st->rx_bad_packet; | |
1840 | if (isr & EMAC_ISR_RP) | |
1841 | ++st->rx_runt_packet; | |
1842 | if (isr & EMAC_ISR_SE) | |
1843 | ++st->rx_short_event; | |
1844 | if (isr & EMAC_ISR_ALE) | |
1845 | ++st->rx_alignment_error; | |
1846 | if (isr & EMAC_ISR_BFCS) | |
1847 | ++st->rx_bad_fcs; | |
1848 | if (isr & EMAC_ISR_PTLE) | |
1849 | ++st->rx_packet_too_long; | |
1850 | if (isr & EMAC_ISR_ORE) | |
1851 | ++st->rx_out_of_range; | |
1852 | if (isr & EMAC_ISR_IRE) | |
1853 | ++st->rx_in_range; | |
1854 | if (isr & EMAC_ISR_SQE) | |
1855 | ++st->tx_sqe; | |
1856 | if (isr & EMAC_ISR_TE) | |
1857 | ++st->tx_errors; | |
1858 | ||
1859 | spin_unlock(&dev->lock); | |
1860 | ||
1861 | return IRQ_HANDLED; | |
1862 | } | |
1863 | ||
1864 | static struct net_device_stats *emac_stats(struct net_device *ndev) | |
1865 | { | |
1866 | struct emac_instance *dev = netdev_priv(ndev); | |
1867 | struct emac_stats *st = &dev->stats; | |
1868 | struct emac_error_stats *est = &dev->estats; | |
1869 | struct net_device_stats *nst = &dev->nstats; | |
1870 | unsigned long flags; | |
1871 | ||
1872 | DBG2(dev, "stats" NL); | |
1873 | ||
1874 | /* Compute "legacy" statistics */ | |
1875 | spin_lock_irqsave(&dev->lock, flags); | |
1876 | nst->rx_packets = (unsigned long)st->rx_packets; | |
1877 | nst->rx_bytes = (unsigned long)st->rx_bytes; | |
1878 | nst->tx_packets = (unsigned long)st->tx_packets; | |
1879 | nst->tx_bytes = (unsigned long)st->tx_bytes; | |
1880 | nst->rx_dropped = (unsigned long)(est->rx_dropped_oom + | |
1881 | est->rx_dropped_error + | |
1882 | est->rx_dropped_resize + | |
1883 | est->rx_dropped_mtu); | |
1884 | nst->tx_dropped = (unsigned long)est->tx_dropped; | |
1885 | ||
1886 | nst->rx_errors = (unsigned long)est->rx_bd_errors; | |
1887 | nst->rx_fifo_errors = (unsigned long)(est->rx_bd_overrun + | |
1888 | est->rx_fifo_overrun + | |
1889 | est->rx_overrun); | |
1890 | nst->rx_frame_errors = (unsigned long)(est->rx_bd_alignment_error + | |
1891 | est->rx_alignment_error); | |
1892 | nst->rx_crc_errors = (unsigned long)(est->rx_bd_bad_fcs + | |
1893 | est->rx_bad_fcs); | |
1894 | nst->rx_length_errors = (unsigned long)(est->rx_bd_runt_packet + | |
1895 | est->rx_bd_short_event + | |
1896 | est->rx_bd_packet_too_long + | |
1897 | est->rx_bd_out_of_range + | |
1898 | est->rx_bd_in_range + | |
1899 | est->rx_runt_packet + | |
1900 | est->rx_short_event + | |
1901 | est->rx_packet_too_long + | |
1902 | est->rx_out_of_range + | |
1903 | est->rx_in_range); | |
1904 | ||
1905 | nst->tx_errors = (unsigned long)(est->tx_bd_errors + est->tx_errors); | |
1906 | nst->tx_fifo_errors = (unsigned long)(est->tx_bd_underrun + | |
1907 | est->tx_underrun); | |
1908 | nst->tx_carrier_errors = (unsigned long)est->tx_bd_carrier_loss; | |
1909 | nst->collisions = (unsigned long)(est->tx_bd_excessive_deferral + | |
1910 | est->tx_bd_excessive_collisions + | |
1911 | est->tx_bd_late_collision + | |
1912 | est->tx_bd_multple_collisions); | |
1913 | spin_unlock_irqrestore(&dev->lock, flags); | |
1914 | return nst; | |
1915 | } | |
1916 | ||
1917 | static struct mal_commac_ops emac_commac_ops = { | |
1918 | .poll_tx = &emac_poll_tx, | |
1919 | .poll_rx = &emac_poll_rx, | |
1920 | .peek_rx = &emac_peek_rx, | |
1921 | .rxde = &emac_rxde, | |
1922 | }; | |
1923 | ||
1924 | static struct mal_commac_ops emac_commac_sg_ops = { | |
1925 | .poll_tx = &emac_poll_tx, | |
1926 | .poll_rx = &emac_poll_rx, | |
1927 | .peek_rx = &emac_peek_rx_sg, | |
1928 | .rxde = &emac_rxde, | |
1929 | }; | |
1930 | ||
1931 | /* Ethtool support */ | |
1932 | static int emac_ethtool_get_settings(struct net_device *ndev, | |
1933 | struct ethtool_cmd *cmd) | |
1934 | { | |
1935 | struct emac_instance *dev = netdev_priv(ndev); | |
1936 | ||
1937 | cmd->supported = dev->phy.features; | |
1938 | cmd->port = PORT_MII; | |
1939 | cmd->phy_address = dev->phy.address; | |
1940 | cmd->transceiver = | |
1941 | dev->phy.address >= 0 ? XCVR_EXTERNAL : XCVR_INTERNAL; | |
1942 | ||
1943 | mutex_lock(&dev->link_lock); | |
1944 | cmd->advertising = dev->phy.advertising; | |
1945 | cmd->autoneg = dev->phy.autoneg; | |
1946 | cmd->speed = dev->phy.speed; | |
1947 | cmd->duplex = dev->phy.duplex; | |
1948 | mutex_unlock(&dev->link_lock); | |
1949 | ||
1950 | return 0; | |
1951 | } | |
1952 | ||
1953 | static int emac_ethtool_set_settings(struct net_device *ndev, | |
1954 | struct ethtool_cmd *cmd) | |
1955 | { | |
1956 | struct emac_instance *dev = netdev_priv(ndev); | |
1957 | u32 f = dev->phy.features; | |
1958 | ||
1959 | DBG(dev, "set_settings(%d, %d, %d, 0x%08x)" NL, | |
1960 | cmd->autoneg, cmd->speed, cmd->duplex, cmd->advertising); | |
1961 | ||
1962 | /* Basic sanity checks */ | |
1963 | if (dev->phy.address < 0) | |
1964 | return -EOPNOTSUPP; | |
1965 | if (cmd->autoneg != AUTONEG_ENABLE && cmd->autoneg != AUTONEG_DISABLE) | |
1966 | return -EINVAL; | |
1967 | if (cmd->autoneg == AUTONEG_ENABLE && cmd->advertising == 0) | |
1968 | return -EINVAL; | |
1969 | if (cmd->duplex != DUPLEX_HALF && cmd->duplex != DUPLEX_FULL) | |
1970 | return -EINVAL; | |
1971 | ||
1972 | if (cmd->autoneg == AUTONEG_DISABLE) { | |
1973 | switch (cmd->speed) { | |
1974 | case SPEED_10: | |
1975 | if (cmd->duplex == DUPLEX_HALF | |
1976 | && !(f & SUPPORTED_10baseT_Half)) | |
1977 | return -EINVAL; | |
1978 | if (cmd->duplex == DUPLEX_FULL | |
1979 | && !(f & SUPPORTED_10baseT_Full)) | |
1980 | return -EINVAL; | |
1981 | break; | |
1982 | case SPEED_100: | |
1983 | if (cmd->duplex == DUPLEX_HALF | |
1984 | && !(f & SUPPORTED_100baseT_Half)) | |
1985 | return -EINVAL; | |
1986 | if (cmd->duplex == DUPLEX_FULL | |
1987 | && !(f & SUPPORTED_100baseT_Full)) | |
1988 | return -EINVAL; | |
1989 | break; | |
1990 | case SPEED_1000: | |
1991 | if (cmd->duplex == DUPLEX_HALF | |
1992 | && !(f & SUPPORTED_1000baseT_Half)) | |
1993 | return -EINVAL; | |
1994 | if (cmd->duplex == DUPLEX_FULL | |
1995 | && !(f & SUPPORTED_1000baseT_Full)) | |
1996 | return -EINVAL; | |
1997 | break; | |
1998 | default: | |
1999 | return -EINVAL; | |
2000 | } | |
2001 | ||
2002 | mutex_lock(&dev->link_lock); | |
2003 | dev->phy.def->ops->setup_forced(&dev->phy, cmd->speed, | |
2004 | cmd->duplex); | |
2005 | mutex_unlock(&dev->link_lock); | |
2006 | ||
2007 | } else { | |
2008 | if (!(f & SUPPORTED_Autoneg)) | |
2009 | return -EINVAL; | |
2010 | ||
2011 | mutex_lock(&dev->link_lock); | |
2012 | dev->phy.def->ops->setup_aneg(&dev->phy, | |
2013 | (cmd->advertising & f) | | |
2014 | (dev->phy.advertising & | |
2015 | (ADVERTISED_Pause | | |
2016 | ADVERTISED_Asym_Pause))); | |
2017 | mutex_unlock(&dev->link_lock); | |
2018 | } | |
2019 | emac_force_link_update(dev); | |
2020 | ||
2021 | return 0; | |
2022 | } | |
2023 | ||
2024 | static void emac_ethtool_get_ringparam(struct net_device *ndev, | |
2025 | struct ethtool_ringparam *rp) | |
2026 | { | |
2027 | rp->rx_max_pending = rp->rx_pending = NUM_RX_BUFF; | |
2028 | rp->tx_max_pending = rp->tx_pending = NUM_TX_BUFF; | |
2029 | } | |
2030 | ||
2031 | static void emac_ethtool_get_pauseparam(struct net_device *ndev, | |
2032 | struct ethtool_pauseparam *pp) | |
2033 | { | |
2034 | struct emac_instance *dev = netdev_priv(ndev); | |
2035 | ||
2036 | mutex_lock(&dev->link_lock); | |
2037 | if ((dev->phy.features & SUPPORTED_Autoneg) && | |
2038 | (dev->phy.advertising & (ADVERTISED_Pause | ADVERTISED_Asym_Pause))) | |
2039 | pp->autoneg = 1; | |
2040 | ||
2041 | if (dev->phy.duplex == DUPLEX_FULL) { | |
2042 | if (dev->phy.pause) | |
2043 | pp->rx_pause = pp->tx_pause = 1; | |
2044 | else if (dev->phy.asym_pause) | |
2045 | pp->tx_pause = 1; | |
2046 | } | |
2047 | mutex_unlock(&dev->link_lock); | |
2048 | } | |
2049 | ||
2050 | static u32 emac_ethtool_get_rx_csum(struct net_device *ndev) | |
2051 | { | |
2052 | struct emac_instance *dev = netdev_priv(ndev); | |
2053 | ||
eb4d84f1 | 2054 | return dev->tah_dev != NULL; |
1d3bb996 DG |
2055 | } |
2056 | ||
2057 | static int emac_get_regs_len(struct emac_instance *dev) | |
2058 | { | |
2059 | if (emac_has_feature(dev, EMAC_FTR_EMAC4)) | |
2060 | return sizeof(struct emac_ethtool_regs_subhdr) + | |
05781ccd | 2061 | EMAC4_ETHTOOL_REGS_SIZE(dev); |
1d3bb996 DG |
2062 | else |
2063 | return sizeof(struct emac_ethtool_regs_subhdr) + | |
05781ccd | 2064 | EMAC_ETHTOOL_REGS_SIZE(dev); |
1d3bb996 DG |
2065 | } |
2066 | ||
2067 | static int emac_ethtool_get_regs_len(struct net_device *ndev) | |
2068 | { | |
2069 | struct emac_instance *dev = netdev_priv(ndev); | |
2070 | int size; | |
2071 | ||
2072 | size = sizeof(struct emac_ethtool_regs_hdr) + | |
2073 | emac_get_regs_len(dev) + mal_get_regs_len(dev->mal); | |
2074 | if (emac_has_feature(dev, EMAC_FTR_HAS_ZMII)) | |
2075 | size += zmii_get_regs_len(dev->zmii_dev); | |
2076 | if (emac_has_feature(dev, EMAC_FTR_HAS_RGMII)) | |
2077 | size += rgmii_get_regs_len(dev->rgmii_dev); | |
2078 | if (emac_has_feature(dev, EMAC_FTR_HAS_TAH)) | |
2079 | size += tah_get_regs_len(dev->tah_dev); | |
2080 | ||
2081 | return size; | |
2082 | } | |
2083 | ||
2084 | static void *emac_dump_regs(struct emac_instance *dev, void *buf) | |
2085 | { | |
2086 | struct emac_ethtool_regs_subhdr *hdr = buf; | |
2087 | ||
2088 | hdr->index = dev->cell_index; | |
2089 | if (emac_has_feature(dev, EMAC_FTR_EMAC4)) { | |
2090 | hdr->version = EMAC4_ETHTOOL_REGS_VER; | |
05781ccd GE |
2091 | memcpy_fromio(hdr + 1, dev->emacp, EMAC4_ETHTOOL_REGS_SIZE(dev)); |
2092 | return ((void *)(hdr + 1) + EMAC4_ETHTOOL_REGS_SIZE(dev)); | |
1d3bb996 DG |
2093 | } else { |
2094 | hdr->version = EMAC_ETHTOOL_REGS_VER; | |
05781ccd GE |
2095 | memcpy_fromio(hdr + 1, dev->emacp, EMAC_ETHTOOL_REGS_SIZE(dev)); |
2096 | return ((void *)(hdr + 1) + EMAC_ETHTOOL_REGS_SIZE(dev)); | |
1d3bb996 DG |
2097 | } |
2098 | } | |
2099 | ||
2100 | static void emac_ethtool_get_regs(struct net_device *ndev, | |
2101 | struct ethtool_regs *regs, void *buf) | |
2102 | { | |
2103 | struct emac_instance *dev = netdev_priv(ndev); | |
2104 | struct emac_ethtool_regs_hdr *hdr = buf; | |
2105 | ||
2106 | hdr->components = 0; | |
2107 | buf = hdr + 1; | |
2108 | ||
2109 | buf = mal_dump_regs(dev->mal, buf); | |
2110 | buf = emac_dump_regs(dev, buf); | |
2111 | if (emac_has_feature(dev, EMAC_FTR_HAS_ZMII)) { | |
2112 | hdr->components |= EMAC_ETHTOOL_REGS_ZMII; | |
2113 | buf = zmii_dump_regs(dev->zmii_dev, buf); | |
2114 | } | |
2115 | if (emac_has_feature(dev, EMAC_FTR_HAS_RGMII)) { | |
2116 | hdr->components |= EMAC_ETHTOOL_REGS_RGMII; | |
2117 | buf = rgmii_dump_regs(dev->rgmii_dev, buf); | |
2118 | } | |
2119 | if (emac_has_feature(dev, EMAC_FTR_HAS_TAH)) { | |
2120 | hdr->components |= EMAC_ETHTOOL_REGS_TAH; | |
2121 | buf = tah_dump_regs(dev->tah_dev, buf); | |
2122 | } | |
2123 | } | |
2124 | ||
2125 | static int emac_ethtool_nway_reset(struct net_device *ndev) | |
2126 | { | |
2127 | struct emac_instance *dev = netdev_priv(ndev); | |
2128 | int res = 0; | |
2129 | ||
2130 | DBG(dev, "nway_reset" NL); | |
2131 | ||
2132 | if (dev->phy.address < 0) | |
2133 | return -EOPNOTSUPP; | |
2134 | ||
2135 | mutex_lock(&dev->link_lock); | |
2136 | if (!dev->phy.autoneg) { | |
2137 | res = -EINVAL; | |
2138 | goto out; | |
2139 | } | |
2140 | ||
2141 | dev->phy.def->ops->setup_aneg(&dev->phy, dev->phy.advertising); | |
2142 | out: | |
2143 | mutex_unlock(&dev->link_lock); | |
2144 | emac_force_link_update(dev); | |
2145 | return res; | |
2146 | } | |
2147 | ||
2148 | static int emac_ethtool_get_stats_count(struct net_device *ndev) | |
2149 | { | |
2150 | return EMAC_ETHTOOL_STATS_COUNT; | |
2151 | } | |
2152 | ||
2153 | static void emac_ethtool_get_strings(struct net_device *ndev, u32 stringset, | |
2154 | u8 * buf) | |
2155 | { | |
2156 | if (stringset == ETH_SS_STATS) | |
2157 | memcpy(buf, &emac_stats_keys, sizeof(emac_stats_keys)); | |
2158 | } | |
2159 | ||
2160 | static void emac_ethtool_get_ethtool_stats(struct net_device *ndev, | |
2161 | struct ethtool_stats *estats, | |
2162 | u64 * tmp_stats) | |
2163 | { | |
2164 | struct emac_instance *dev = netdev_priv(ndev); | |
2165 | ||
2166 | memcpy(tmp_stats, &dev->stats, sizeof(dev->stats)); | |
2167 | tmp_stats += sizeof(dev->stats) / sizeof(u64); | |
2168 | memcpy(tmp_stats, &dev->estats, sizeof(dev->estats)); | |
2169 | } | |
2170 | ||
2171 | static void emac_ethtool_get_drvinfo(struct net_device *ndev, | |
2172 | struct ethtool_drvinfo *info) | |
2173 | { | |
2174 | struct emac_instance *dev = netdev_priv(ndev); | |
2175 | ||
2176 | strcpy(info->driver, "ibm_emac"); | |
2177 | strcpy(info->version, DRV_VERSION); | |
2178 | info->fw_version[0] = '\0'; | |
2179 | sprintf(info->bus_info, "PPC 4xx EMAC-%d %s", | |
2180 | dev->cell_index, dev->ofdev->node->full_name); | |
2181 | info->n_stats = emac_ethtool_get_stats_count(ndev); | |
2182 | info->regdump_len = emac_ethtool_get_regs_len(ndev); | |
2183 | } | |
2184 | ||
2185 | static const struct ethtool_ops emac_ethtool_ops = { | |
2186 | .get_settings = emac_ethtool_get_settings, | |
2187 | .set_settings = emac_ethtool_set_settings, | |
2188 | .get_drvinfo = emac_ethtool_get_drvinfo, | |
2189 | ||
2190 | .get_regs_len = emac_ethtool_get_regs_len, | |
2191 | .get_regs = emac_ethtool_get_regs, | |
2192 | ||
2193 | .nway_reset = emac_ethtool_nway_reset, | |
2194 | ||
2195 | .get_ringparam = emac_ethtool_get_ringparam, | |
2196 | .get_pauseparam = emac_ethtool_get_pauseparam, | |
2197 | ||
2198 | .get_rx_csum = emac_ethtool_get_rx_csum, | |
2199 | ||
2200 | .get_strings = emac_ethtool_get_strings, | |
2201 | .get_stats_count = emac_ethtool_get_stats_count, | |
2202 | .get_ethtool_stats = emac_ethtool_get_ethtool_stats, | |
2203 | ||
2204 | .get_link = ethtool_op_get_link, | |
2205 | .get_tx_csum = ethtool_op_get_tx_csum, | |
2206 | .get_sg = ethtool_op_get_sg, | |
2207 | }; | |
2208 | ||
2209 | static int emac_ioctl(struct net_device *ndev, struct ifreq *rq, int cmd) | |
2210 | { | |
2211 | struct emac_instance *dev = netdev_priv(ndev); | |
0fa0ee05 | 2212 | struct mii_ioctl_data *data = if_mii(rq); |
1d3bb996 DG |
2213 | |
2214 | DBG(dev, "ioctl %08x" NL, cmd); | |
2215 | ||
2216 | if (dev->phy.address < 0) | |
2217 | return -EOPNOTSUPP; | |
2218 | ||
2219 | switch (cmd) { | |
2220 | case SIOCGMIIPHY: | |
0fa0ee05 | 2221 | data->phy_id = dev->phy.address; |
1d3bb996 DG |
2222 | /* Fall through */ |
2223 | case SIOCGMIIREG: | |
0fa0ee05 BH |
2224 | data->val_out = emac_mdio_read(ndev, dev->phy.address, |
2225 | data->reg_num); | |
1d3bb996 DG |
2226 | return 0; |
2227 | ||
2228 | case SIOCSMIIREG: | |
0fa0ee05 BH |
2229 | emac_mdio_write(ndev, dev->phy.address, data->reg_num, |
2230 | data->val_in); | |
1d3bb996 DG |
2231 | return 0; |
2232 | default: | |
2233 | return -EOPNOTSUPP; | |
2234 | } | |
2235 | } | |
2236 | ||
2237 | struct emac_depentry { | |
2238 | u32 phandle; | |
2239 | struct device_node *node; | |
2240 | struct of_device *ofdev; | |
2241 | void *drvdata; | |
2242 | }; | |
2243 | ||
2244 | #define EMAC_DEP_MAL_IDX 0 | |
2245 | #define EMAC_DEP_ZMII_IDX 1 | |
2246 | #define EMAC_DEP_RGMII_IDX 2 | |
2247 | #define EMAC_DEP_TAH_IDX 3 | |
2248 | #define EMAC_DEP_MDIO_IDX 4 | |
2249 | #define EMAC_DEP_PREV_IDX 5 | |
2250 | #define EMAC_DEP_COUNT 6 | |
2251 | ||
2252 | static int __devinit emac_check_deps(struct emac_instance *dev, | |
2253 | struct emac_depentry *deps) | |
2254 | { | |
2255 | int i, there = 0; | |
2256 | struct device_node *np; | |
2257 | ||
2258 | for (i = 0; i < EMAC_DEP_COUNT; i++) { | |
2259 | /* no dependency on that item, allright */ | |
2260 | if (deps[i].phandle == 0) { | |
2261 | there++; | |
2262 | continue; | |
2263 | } | |
2264 | /* special case for blist as the dependency might go away */ | |
2265 | if (i == EMAC_DEP_PREV_IDX) { | |
2266 | np = *(dev->blist - 1); | |
2267 | if (np == NULL) { | |
2268 | deps[i].phandle = 0; | |
2269 | there++; | |
2270 | continue; | |
2271 | } | |
2272 | if (deps[i].node == NULL) | |
2273 | deps[i].node = of_node_get(np); | |
2274 | } | |
2275 | if (deps[i].node == NULL) | |
2276 | deps[i].node = of_find_node_by_phandle(deps[i].phandle); | |
2277 | if (deps[i].node == NULL) | |
2278 | continue; | |
2279 | if (deps[i].ofdev == NULL) | |
2280 | deps[i].ofdev = of_find_device_by_node(deps[i].node); | |
2281 | if (deps[i].ofdev == NULL) | |
2282 | continue; | |
2283 | if (deps[i].drvdata == NULL) | |
2284 | deps[i].drvdata = dev_get_drvdata(&deps[i].ofdev->dev); | |
2285 | if (deps[i].drvdata != NULL) | |
2286 | there++; | |
2287 | } | |
2288 | return (there == EMAC_DEP_COUNT); | |
2289 | } | |
2290 | ||
2291 | static void emac_put_deps(struct emac_instance *dev) | |
2292 | { | |
2293 | if (dev->mal_dev) | |
2294 | of_dev_put(dev->mal_dev); | |
2295 | if (dev->zmii_dev) | |
2296 | of_dev_put(dev->zmii_dev); | |
2297 | if (dev->rgmii_dev) | |
2298 | of_dev_put(dev->rgmii_dev); | |
2299 | if (dev->mdio_dev) | |
2300 | of_dev_put(dev->mdio_dev); | |
2301 | if (dev->tah_dev) | |
2302 | of_dev_put(dev->tah_dev); | |
2303 | } | |
2304 | ||
2305 | static int __devinit emac_of_bus_notify(struct notifier_block *nb, | |
2306 | unsigned long action, void *data) | |
2307 | { | |
2308 | /* We are only intereted in device addition */ | |
2309 | if (action == BUS_NOTIFY_BOUND_DRIVER) | |
2310 | wake_up_all(&emac_probe_wait); | |
2311 | return 0; | |
2312 | } | |
2313 | ||
51d4a1cc | 2314 | static struct notifier_block emac_of_bus_notifier __devinitdata = { |
1d3bb996 DG |
2315 | .notifier_call = emac_of_bus_notify |
2316 | }; | |
2317 | ||
2318 | static int __devinit emac_wait_deps(struct emac_instance *dev) | |
2319 | { | |
2320 | struct emac_depentry deps[EMAC_DEP_COUNT]; | |
2321 | int i, err; | |
2322 | ||
2323 | memset(&deps, 0, sizeof(deps)); | |
2324 | ||
2325 | deps[EMAC_DEP_MAL_IDX].phandle = dev->mal_ph; | |
2326 | deps[EMAC_DEP_ZMII_IDX].phandle = dev->zmii_ph; | |
2327 | deps[EMAC_DEP_RGMII_IDX].phandle = dev->rgmii_ph; | |
2328 | if (dev->tah_ph) | |
2329 | deps[EMAC_DEP_TAH_IDX].phandle = dev->tah_ph; | |
2330 | if (dev->mdio_ph) | |
2331 | deps[EMAC_DEP_MDIO_IDX].phandle = dev->mdio_ph; | |
2332 | if (dev->blist && dev->blist > emac_boot_list) | |
2333 | deps[EMAC_DEP_PREV_IDX].phandle = 0xffffffffu; | |
2334 | bus_register_notifier(&of_platform_bus_type, &emac_of_bus_notifier); | |
2335 | wait_event_timeout(emac_probe_wait, | |
2336 | emac_check_deps(dev, deps), | |
2337 | EMAC_PROBE_DEP_TIMEOUT); | |
2338 | bus_unregister_notifier(&of_platform_bus_type, &emac_of_bus_notifier); | |
2339 | err = emac_check_deps(dev, deps) ? 0 : -ENODEV; | |
2340 | for (i = 0; i < EMAC_DEP_COUNT; i++) { | |
2341 | if (deps[i].node) | |
2342 | of_node_put(deps[i].node); | |
2343 | if (err && deps[i].ofdev) | |
2344 | of_dev_put(deps[i].ofdev); | |
2345 | } | |
2346 | if (err == 0) { | |
2347 | dev->mal_dev = deps[EMAC_DEP_MAL_IDX].ofdev; | |
2348 | dev->zmii_dev = deps[EMAC_DEP_ZMII_IDX].ofdev; | |
2349 | dev->rgmii_dev = deps[EMAC_DEP_RGMII_IDX].ofdev; | |
2350 | dev->tah_dev = deps[EMAC_DEP_TAH_IDX].ofdev; | |
2351 | dev->mdio_dev = deps[EMAC_DEP_MDIO_IDX].ofdev; | |
2352 | } | |
2353 | if (deps[EMAC_DEP_PREV_IDX].ofdev) | |
2354 | of_dev_put(deps[EMAC_DEP_PREV_IDX].ofdev); | |
2355 | return err; | |
2356 | } | |
2357 | ||
2358 | static int __devinit emac_read_uint_prop(struct device_node *np, const char *name, | |
2359 | u32 *val, int fatal) | |
2360 | { | |
2361 | int len; | |
2362 | const u32 *prop = of_get_property(np, name, &len); | |
2363 | if (prop == NULL || len < sizeof(u32)) { | |
2364 | if (fatal) | |
2365 | printk(KERN_ERR "%s: missing %s property\n", | |
2366 | np->full_name, name); | |
2367 | return -ENODEV; | |
2368 | } | |
2369 | *val = *prop; | |
2370 | return 0; | |
2371 | } | |
2372 | ||
2373 | static int __devinit emac_init_phy(struct emac_instance *dev) | |
2374 | { | |
2375 | struct device_node *np = dev->ofdev->node; | |
2376 | struct net_device *ndev = dev->ndev; | |
2377 | u32 phy_map, adv; | |
2378 | int i; | |
2379 | ||
2380 | dev->phy.dev = ndev; | |
2381 | dev->phy.mode = dev->phy_mode; | |
2382 | ||
2383 | /* PHY-less configuration. | |
2384 | * XXX I probably should move these settings to the dev tree | |
2385 | */ | |
2386 | if (dev->phy_address == 0xffffffff && dev->phy_map == 0xffffffff) { | |
2387 | emac_reset(dev); | |
2388 | ||
2389 | /* PHY-less configuration. | |
2390 | * XXX I probably should move these settings to the dev tree | |
2391 | */ | |
2392 | dev->phy.address = -1; | |
9e3cb294 VG |
2393 | dev->phy.features = SUPPORTED_MII; |
2394 | if (emac_phy_supports_gige(dev->phy_mode)) | |
2395 | dev->phy.features |= SUPPORTED_1000baseT_Full; | |
2396 | else | |
2397 | dev->phy.features |= SUPPORTED_100baseT_Full; | |
1d3bb996 DG |
2398 | dev->phy.pause = 1; |
2399 | ||
2400 | return 0; | |
2401 | } | |
2402 | ||
2403 | mutex_lock(&emac_phy_map_lock); | |
2404 | phy_map = dev->phy_map | busy_phy_map; | |
2405 | ||
2406 | DBG(dev, "PHY maps %08x %08x" NL, dev->phy_map, busy_phy_map); | |
2407 | ||
2408 | dev->phy.mdio_read = emac_mdio_read; | |
2409 | dev->phy.mdio_write = emac_mdio_write; | |
2410 | ||
0925ab5d VB |
2411 | /* Enable internal clock source */ |
2412 | #ifdef CONFIG_PPC_DCR_NATIVE | |
2413 | if (emac_has_feature(dev, EMAC_FTR_440GX_PHY_CLK_FIX)) | |
2414 | dcri_clrset(SDR0, SDR0_MFR, 0, SDR0_MFR_ECS); | |
11121e30 VB |
2415 | #endif |
2416 | /* PHY clock workaround */ | |
2417 | emac_rx_clk_tx(dev); | |
2418 | ||
2419 | /* Enable internal clock source on 440GX*/ | |
2420 | #ifdef CONFIG_PPC_DCR_NATIVE | |
2421 | if (emac_has_feature(dev, EMAC_FTR_440GX_PHY_CLK_FIX)) | |
2422 | dcri_clrset(SDR0, SDR0_MFR, 0, SDR0_MFR_ECS); | |
0925ab5d | 2423 | #endif |
1d3bb996 DG |
2424 | /* Configure EMAC with defaults so we can at least use MDIO |
2425 | * This is needed mostly for 440GX | |
2426 | */ | |
2427 | if (emac_phy_gpcs(dev->phy.mode)) { | |
2428 | /* XXX | |
2429 | * Make GPCS PHY address equal to EMAC index. | |
2430 | * We probably should take into account busy_phy_map | |
2431 | * and/or phy_map here. | |
2432 | * | |
2433 | * Note that the busy_phy_map is currently global | |
2434 | * while it should probably be per-ASIC... | |
2435 | */ | |
9e3cb294 VG |
2436 | dev->phy.gpcs_address = dev->gpcs_address; |
2437 | if (dev->phy.gpcs_address == 0xffffffff) | |
2438 | dev->phy.address = dev->cell_index; | |
1d3bb996 DG |
2439 | } |
2440 | ||
2441 | emac_configure(dev); | |
2442 | ||
2443 | if (dev->phy_address != 0xffffffff) | |
2444 | phy_map = ~(1 << dev->phy_address); | |
2445 | ||
2446 | for (i = 0; i < 0x20; phy_map >>= 1, ++i) | |
2447 | if (!(phy_map & 1)) { | |
2448 | int r; | |
2449 | busy_phy_map |= 1 << i; | |
2450 | ||
2451 | /* Quick check if there is a PHY at the address */ | |
2452 | r = emac_mdio_read(dev->ndev, i, MII_BMCR); | |
2453 | if (r == 0xffff || r < 0) | |
2454 | continue; | |
2455 | if (!emac_mii_phy_probe(&dev->phy, i)) | |
2456 | break; | |
2457 | } | |
0925ab5d VB |
2458 | |
2459 | /* Enable external clock source */ | |
2460 | #ifdef CONFIG_PPC_DCR_NATIVE | |
2461 | if (emac_has_feature(dev, EMAC_FTR_440GX_PHY_CLK_FIX)) | |
2462 | dcri_clrset(SDR0, SDR0_MFR, SDR0_MFR_ECS, 0); | |
2463 | #endif | |
1d3bb996 DG |
2464 | mutex_unlock(&emac_phy_map_lock); |
2465 | if (i == 0x20) { | |
2466 | printk(KERN_WARNING "%s: can't find PHY!\n", np->full_name); | |
2467 | return -ENXIO; | |
2468 | } | |
2469 | ||
2470 | /* Init PHY */ | |
2471 | if (dev->phy.def->ops->init) | |
2472 | dev->phy.def->ops->init(&dev->phy); | |
2473 | ||
2474 | /* Disable any PHY features not supported by the platform */ | |
2475 | dev->phy.def->features &= ~dev->phy_feat_exc; | |
2476 | ||
2477 | /* Setup initial link parameters */ | |
2478 | if (dev->phy.features & SUPPORTED_Autoneg) { | |
2479 | adv = dev->phy.features; | |
2480 | if (!emac_has_feature(dev, EMAC_FTR_NO_FLOW_CONTROL_40x)) | |
2481 | adv |= ADVERTISED_Pause | ADVERTISED_Asym_Pause; | |
2482 | /* Restart autonegotiation */ | |
2483 | dev->phy.def->ops->setup_aneg(&dev->phy, adv); | |
2484 | } else { | |
2485 | u32 f = dev->phy.def->features; | |
2486 | int speed = SPEED_10, fd = DUPLEX_HALF; | |
2487 | ||
2488 | /* Select highest supported speed/duplex */ | |
2489 | if (f & SUPPORTED_1000baseT_Full) { | |
2490 | speed = SPEED_1000; | |
2491 | fd = DUPLEX_FULL; | |
2492 | } else if (f & SUPPORTED_1000baseT_Half) | |
2493 | speed = SPEED_1000; | |
2494 | else if (f & SUPPORTED_100baseT_Full) { | |
2495 | speed = SPEED_100; | |
2496 | fd = DUPLEX_FULL; | |
2497 | } else if (f & SUPPORTED_100baseT_Half) | |
2498 | speed = SPEED_100; | |
2499 | else if (f & SUPPORTED_10baseT_Full) | |
2500 | fd = DUPLEX_FULL; | |
2501 | ||
2502 | /* Force link parameters */ | |
2503 | dev->phy.def->ops->setup_forced(&dev->phy, speed, fd); | |
2504 | } | |
2505 | return 0; | |
2506 | } | |
2507 | ||
2508 | static int __devinit emac_init_config(struct emac_instance *dev) | |
2509 | { | |
2510 | struct device_node *np = dev->ofdev->node; | |
2511 | const void *p; | |
2512 | unsigned int plen; | |
2513 | const char *pm, *phy_modes[] = { | |
2514 | [PHY_MODE_NA] = "", | |
2515 | [PHY_MODE_MII] = "mii", | |
2516 | [PHY_MODE_RMII] = "rmii", | |
2517 | [PHY_MODE_SMII] = "smii", | |
2518 | [PHY_MODE_RGMII] = "rgmii", | |
2519 | [PHY_MODE_TBI] = "tbi", | |
2520 | [PHY_MODE_GMII] = "gmii", | |
2521 | [PHY_MODE_RTBI] = "rtbi", | |
2522 | [PHY_MODE_SGMII] = "sgmii", | |
2523 | }; | |
2524 | ||
2525 | /* Read config from device-tree */ | |
2526 | if (emac_read_uint_prop(np, "mal-device", &dev->mal_ph, 1)) | |
2527 | return -ENXIO; | |
2528 | if (emac_read_uint_prop(np, "mal-tx-channel", &dev->mal_tx_chan, 1)) | |
2529 | return -ENXIO; | |
2530 | if (emac_read_uint_prop(np, "mal-rx-channel", &dev->mal_rx_chan, 1)) | |
2531 | return -ENXIO; | |
2532 | if (emac_read_uint_prop(np, "cell-index", &dev->cell_index, 1)) | |
2533 | return -ENXIO; | |
2534 | if (emac_read_uint_prop(np, "max-frame-size", &dev->max_mtu, 0)) | |
2535 | dev->max_mtu = 1500; | |
2536 | if (emac_read_uint_prop(np, "rx-fifo-size", &dev->rx_fifo_size, 0)) | |
2537 | dev->rx_fifo_size = 2048; | |
2538 | if (emac_read_uint_prop(np, "tx-fifo-size", &dev->tx_fifo_size, 0)) | |
2539 | dev->tx_fifo_size = 2048; | |
2540 | if (emac_read_uint_prop(np, "rx-fifo-size-gige", &dev->rx_fifo_size_gige, 0)) | |
2541 | dev->rx_fifo_size_gige = dev->rx_fifo_size; | |
2542 | if (emac_read_uint_prop(np, "tx-fifo-size-gige", &dev->tx_fifo_size_gige, 0)) | |
2543 | dev->tx_fifo_size_gige = dev->tx_fifo_size; | |
2544 | if (emac_read_uint_prop(np, "phy-address", &dev->phy_address, 0)) | |
2545 | dev->phy_address = 0xffffffff; | |
2546 | if (emac_read_uint_prop(np, "phy-map", &dev->phy_map, 0)) | |
2547 | dev->phy_map = 0xffffffff; | |
9e3cb294 VG |
2548 | if (emac_read_uint_prop(np, "gpcs-address", &dev->gpcs_address, 0)) |
2549 | dev->gpcs_address = 0xffffffff; | |
1d3bb996 DG |
2550 | if (emac_read_uint_prop(np->parent, "clock-frequency", &dev->opb_bus_freq, 1)) |
2551 | return -ENXIO; | |
2552 | if (emac_read_uint_prop(np, "tah-device", &dev->tah_ph, 0)) | |
2553 | dev->tah_ph = 0; | |
2554 | if (emac_read_uint_prop(np, "tah-channel", &dev->tah_port, 0)) | |
63b6cad7 | 2555 | dev->tah_port = 0; |
1d3bb996 DG |
2556 | if (emac_read_uint_prop(np, "mdio-device", &dev->mdio_ph, 0)) |
2557 | dev->mdio_ph = 0; | |
2558 | if (emac_read_uint_prop(np, "zmii-device", &dev->zmii_ph, 0)) | |
2559 | dev->zmii_ph = 0;; | |
2560 | if (emac_read_uint_prop(np, "zmii-channel", &dev->zmii_port, 0)) | |
2561 | dev->zmii_port = 0xffffffff;; | |
2562 | if (emac_read_uint_prop(np, "rgmii-device", &dev->rgmii_ph, 0)) | |
2563 | dev->rgmii_ph = 0;; | |
2564 | if (emac_read_uint_prop(np, "rgmii-channel", &dev->rgmii_port, 0)) | |
2565 | dev->rgmii_port = 0xffffffff;; | |
2566 | if (emac_read_uint_prop(np, "fifo-entry-size", &dev->fifo_entry_size, 0)) | |
2567 | dev->fifo_entry_size = 16; | |
2568 | if (emac_read_uint_prop(np, "mal-burst-size", &dev->mal_burst_size, 0)) | |
2569 | dev->mal_burst_size = 256; | |
2570 | ||
2571 | /* PHY mode needs some decoding */ | |
2572 | dev->phy_mode = PHY_MODE_NA; | |
2573 | pm = of_get_property(np, "phy-mode", &plen); | |
2574 | if (pm != NULL) { | |
2575 | int i; | |
2576 | for (i = 0; i < ARRAY_SIZE(phy_modes); i++) | |
2577 | if (!strcasecmp(pm, phy_modes[i])) { | |
2578 | dev->phy_mode = i; | |
2579 | break; | |
2580 | } | |
2581 | } | |
2582 | ||
2583 | /* Backward compat with non-final DT */ | |
2584 | if (dev->phy_mode == PHY_MODE_NA && pm != NULL && plen == 4) { | |
2585 | u32 nmode = *(const u32 *)pm; | |
2586 | if (nmode > PHY_MODE_NA && nmode <= PHY_MODE_SGMII) | |
2587 | dev->phy_mode = nmode; | |
2588 | } | |
2589 | ||
2590 | /* Check EMAC version */ | |
05781ccd GE |
2591 | if (of_device_is_compatible(np, "ibm,emac4sync")) { |
2592 | dev->features |= (EMAC_FTR_EMAC4 | EMAC_FTR_EMAC4SYNC); | |
9e3cb294 VG |
2593 | if (of_device_is_compatible(np, "ibm,emac-460ex") || |
2594 | of_device_is_compatible(np, "ibm,emac-460gt")) | |
2595 | dev->features |= EMAC_FTR_460EX_PHY_CLK_FIX; | |
9616a755 BH |
2596 | if (of_device_is_compatible(np, "ibm,emac-405ex") || |
2597 | of_device_is_compatible(np, "ibm,emac-405exr")) | |
2598 | dev->features |= EMAC_FTR_440EP_PHY_CLK_FIX; | |
05781ccd | 2599 | } else if (of_device_is_compatible(np, "ibm,emac4")) { |
1d3bb996 | 2600 | dev->features |= EMAC_FTR_EMAC4; |
0925ab5d VB |
2601 | if (of_device_is_compatible(np, "ibm,emac-440gx")) |
2602 | dev->features |= EMAC_FTR_440GX_PHY_CLK_FIX; | |
11121e30 VB |
2603 | } else { |
2604 | if (of_device_is_compatible(np, "ibm,emac-440ep") || | |
2605 | of_device_is_compatible(np, "ibm,emac-440gr")) | |
2606 | dev->features |= EMAC_FTR_440EP_PHY_CLK_FIX; | |
1ff0fcfc | 2607 | if (of_device_is_compatible(np, "ibm,emac-405ez")) { |
c778e11d | 2608 | #ifdef CONFIG_IBM_NEW_EMAC_NO_FLOW_CTRL |
b68d185a | 2609 | dev->features |= EMAC_FTR_NO_FLOW_CONTROL_40x; |
1ff0fcfc JB |
2610 | #else |
2611 | printk(KERN_ERR "%s: Flow control not disabled!\n", | |
2612 | np->full_name); | |
2613 | return -ENXIO; | |
2614 | #endif | |
2615 | } | |
2616 | ||
0925ab5d | 2617 | } |
bff713b5 BH |
2618 | |
2619 | /* Fixup some feature bits based on the device tree */ | |
2620 | if (of_get_property(np, "has-inverted-stacr-oc", NULL)) | |
1d3bb996 | 2621 | dev->features |= EMAC_FTR_STACR_OC_INVERT; |
bff713b5 BH |
2622 | if (of_get_property(np, "has-new-stacr-staopc", NULL)) |
2623 | dev->features |= EMAC_FTR_HAS_NEW_STACR; | |
1d3bb996 | 2624 | |
bff713b5 BH |
2625 | /* CAB lacks the appropriate properties */ |
2626 | if (of_device_is_compatible(np, "ibm,emac-axon")) | |
2627 | dev->features |= EMAC_FTR_HAS_NEW_STACR | | |
2628 | EMAC_FTR_STACR_OC_INVERT; | |
2629 | ||
2630 | /* Enable TAH/ZMII/RGMII features as found */ | |
1d3bb996 DG |
2631 | if (dev->tah_ph != 0) { |
2632 | #ifdef CONFIG_IBM_NEW_EMAC_TAH | |
2633 | dev->features |= EMAC_FTR_HAS_TAH; | |
2634 | #else | |
2635 | printk(KERN_ERR "%s: TAH support not enabled !\n", | |
2636 | np->full_name); | |
2637 | return -ENXIO; | |
2638 | #endif | |
2639 | } | |
2640 | ||
2641 | if (dev->zmii_ph != 0) { | |
2642 | #ifdef CONFIG_IBM_NEW_EMAC_ZMII | |
2643 | dev->features |= EMAC_FTR_HAS_ZMII; | |
2644 | #else | |
2645 | printk(KERN_ERR "%s: ZMII support not enabled !\n", | |
2646 | np->full_name); | |
2647 | return -ENXIO; | |
2648 | #endif | |
2649 | } | |
2650 | ||
2651 | if (dev->rgmii_ph != 0) { | |
2652 | #ifdef CONFIG_IBM_NEW_EMAC_RGMII | |
2653 | dev->features |= EMAC_FTR_HAS_RGMII; | |
2654 | #else | |
2655 | printk(KERN_ERR "%s: RGMII support not enabled !\n", | |
2656 | np->full_name); | |
2657 | return -ENXIO; | |
2658 | #endif | |
2659 | } | |
2660 | ||
2661 | /* Read MAC-address */ | |
2662 | p = of_get_property(np, "local-mac-address", NULL); | |
2663 | if (p == NULL) { | |
2664 | printk(KERN_ERR "%s: Can't find local-mac-address property\n", | |
2665 | np->full_name); | |
2666 | return -ENXIO; | |
2667 | } | |
2668 | memcpy(dev->ndev->dev_addr, p, 6); | |
2669 | ||
05781ccd GE |
2670 | /* IAHT and GAHT filter parameterization */ |
2671 | if (emac_has_feature(dev, EMAC_FTR_EMAC4SYNC)) { | |
2672 | dev->xaht_slots_shift = EMAC4SYNC_XAHT_SLOTS_SHIFT; | |
2673 | dev->xaht_width_shift = EMAC4SYNC_XAHT_WIDTH_SHIFT; | |
2674 | } else { | |
2675 | dev->xaht_slots_shift = EMAC4_XAHT_SLOTS_SHIFT; | |
2676 | dev->xaht_width_shift = EMAC4_XAHT_WIDTH_SHIFT; | |
2677 | } | |
2678 | ||
1d3bb996 DG |
2679 | DBG(dev, "features : 0x%08x / 0x%08x\n", dev->features, EMAC_FTRS_POSSIBLE); |
2680 | DBG(dev, "tx_fifo_size : %d (%d gige)\n", dev->tx_fifo_size, dev->tx_fifo_size_gige); | |
2681 | DBG(dev, "rx_fifo_size : %d (%d gige)\n", dev->rx_fifo_size, dev->rx_fifo_size_gige); | |
2682 | DBG(dev, "max_mtu : %d\n", dev->max_mtu); | |
2683 | DBG(dev, "OPB freq : %d\n", dev->opb_bus_freq); | |
2684 | ||
2685 | return 0; | |
2686 | } | |
2687 | ||
15efc02b AB |
2688 | static const struct net_device_ops emac_netdev_ops = { |
2689 | .ndo_open = emac_open, | |
2690 | .ndo_stop = emac_close, | |
2691 | .ndo_get_stats = emac_stats, | |
2692 | .ndo_set_multicast_list = emac_set_multicast_list, | |
2693 | .ndo_do_ioctl = emac_ioctl, | |
2694 | .ndo_tx_timeout = emac_tx_timeout, | |
2695 | .ndo_validate_addr = eth_validate_addr, | |
2696 | .ndo_set_mac_address = eth_mac_addr, | |
2697 | .ndo_start_xmit = emac_start_xmit, | |
2698 | .ndo_change_mtu = eth_change_mtu, | |
2699 | }; | |
2700 | ||
2701 | static const struct net_device_ops emac_gige_netdev_ops = { | |
2702 | .ndo_open = emac_open, | |
2703 | .ndo_stop = emac_close, | |
2704 | .ndo_get_stats = emac_stats, | |
2705 | .ndo_set_multicast_list = emac_set_multicast_list, | |
2706 | .ndo_do_ioctl = emac_ioctl, | |
2707 | .ndo_tx_timeout = emac_tx_timeout, | |
2708 | .ndo_validate_addr = eth_validate_addr, | |
2709 | .ndo_set_mac_address = eth_mac_addr, | |
2710 | .ndo_start_xmit = emac_start_xmit_sg, | |
2711 | .ndo_change_mtu = emac_change_mtu, | |
2712 | }; | |
2713 | ||
1d3bb996 DG |
2714 | static int __devinit emac_probe(struct of_device *ofdev, |
2715 | const struct of_device_id *match) | |
2716 | { | |
2717 | struct net_device *ndev; | |
2718 | struct emac_instance *dev; | |
2719 | struct device_node *np = ofdev->node; | |
2720 | struct device_node **blist = NULL; | |
2721 | int err, i; | |
2722 | ||
be63c09a JB |
2723 | /* Skip unused/unwired EMACS. We leave the check for an unused |
2724 | * property here for now, but new flat device trees should set a | |
2725 | * status property to "disabled" instead. | |
2726 | */ | |
2727 | if (of_get_property(np, "unused", NULL) || !of_device_is_available(np)) | |
3d722562 HB |
2728 | return -ENODEV; |
2729 | ||
1d3bb996 DG |
2730 | /* Find ourselves in the bootlist if we are there */ |
2731 | for (i = 0; i < EMAC_BOOT_LIST_SIZE; i++) | |
2732 | if (emac_boot_list[i] == np) | |
2733 | blist = &emac_boot_list[i]; | |
2734 | ||
2735 | /* Allocate our net_device structure */ | |
2736 | err = -ENOMEM; | |
2737 | ndev = alloc_etherdev(sizeof(struct emac_instance)); | |
2738 | if (!ndev) { | |
2739 | printk(KERN_ERR "%s: could not allocate ethernet device!\n", | |
2740 | np->full_name); | |
2741 | goto err_gone; | |
2742 | } | |
2743 | dev = netdev_priv(ndev); | |
2744 | dev->ndev = ndev; | |
2745 | dev->ofdev = ofdev; | |
2746 | dev->blist = blist; | |
1d3bb996 DG |
2747 | SET_NETDEV_DEV(ndev, &ofdev->dev); |
2748 | ||
2749 | /* Initialize some embedded data structures */ | |
2750 | mutex_init(&dev->mdio_lock); | |
2751 | mutex_init(&dev->link_lock); | |
2752 | spin_lock_init(&dev->lock); | |
2753 | INIT_WORK(&dev->reset_work, emac_reset_work); | |
2754 | ||
2755 | /* Init various config data based on device-tree */ | |
2756 | err = emac_init_config(dev); | |
2757 | if (err != 0) | |
2758 | goto err_free; | |
2759 | ||
2760 | /* Get interrupts. EMAC irq is mandatory, WOL irq is optional */ | |
2761 | dev->emac_irq = irq_of_parse_and_map(np, 0); | |
2762 | dev->wol_irq = irq_of_parse_and_map(np, 1); | |
2763 | if (dev->emac_irq == NO_IRQ) { | |
2764 | printk(KERN_ERR "%s: Can't map main interrupt\n", np->full_name); | |
2765 | goto err_free; | |
2766 | } | |
2767 | ndev->irq = dev->emac_irq; | |
2768 | ||
2769 | /* Map EMAC regs */ | |
2770 | if (of_address_to_resource(np, 0, &dev->rsrc_regs)) { | |
2771 | printk(KERN_ERR "%s: Can't get registers address\n", | |
2772 | np->full_name); | |
2773 | goto err_irq_unmap; | |
2774 | } | |
2775 | // TODO : request_mem_region | |
05781ccd GE |
2776 | dev->emacp = ioremap(dev->rsrc_regs.start, |
2777 | dev->rsrc_regs.end - dev->rsrc_regs.start + 1); | |
1d3bb996 DG |
2778 | if (dev->emacp == NULL) { |
2779 | printk(KERN_ERR "%s: Can't map device registers!\n", | |
2780 | np->full_name); | |
2781 | err = -ENOMEM; | |
2782 | goto err_irq_unmap; | |
2783 | } | |
2784 | ||
2785 | /* Wait for dependent devices */ | |
2786 | err = emac_wait_deps(dev); | |
2787 | if (err) { | |
2788 | printk(KERN_ERR | |
2789 | "%s: Timeout waiting for dependent devices\n", | |
2790 | np->full_name); | |
2791 | /* display more info about what's missing ? */ | |
2792 | goto err_reg_unmap; | |
2793 | } | |
2794 | dev->mal = dev_get_drvdata(&dev->mal_dev->dev); | |
2795 | if (dev->mdio_dev != NULL) | |
2796 | dev->mdio_instance = dev_get_drvdata(&dev->mdio_dev->dev); | |
2797 | ||
2798 | /* Register with MAL */ | |
2799 | dev->commac.ops = &emac_commac_ops; | |
2800 | dev->commac.dev = dev; | |
2801 | dev->commac.tx_chan_mask = MAL_CHAN_MASK(dev->mal_tx_chan); | |
2802 | dev->commac.rx_chan_mask = MAL_CHAN_MASK(dev->mal_rx_chan); | |
2803 | err = mal_register_commac(dev->mal, &dev->commac); | |
2804 | if (err) { | |
2805 | printk(KERN_ERR "%s: failed to register with mal %s!\n", | |
2806 | np->full_name, dev->mal_dev->node->full_name); | |
2807 | goto err_rel_deps; | |
2808 | } | |
2809 | dev->rx_skb_size = emac_rx_skb_size(ndev->mtu); | |
2810 | dev->rx_sync_size = emac_rx_sync_size(ndev->mtu); | |
2811 | ||
2812 | /* Get pointers to BD rings */ | |
2813 | dev->tx_desc = | |
2814 | dev->mal->bd_virt + mal_tx_bd_offset(dev->mal, dev->mal_tx_chan); | |
2815 | dev->rx_desc = | |
2816 | dev->mal->bd_virt + mal_rx_bd_offset(dev->mal, dev->mal_rx_chan); | |
2817 | ||
2818 | DBG(dev, "tx_desc %p" NL, dev->tx_desc); | |
2819 | DBG(dev, "rx_desc %p" NL, dev->rx_desc); | |
2820 | ||
2821 | /* Clean rings */ | |
2822 | memset(dev->tx_desc, 0, NUM_TX_BUFF * sizeof(struct mal_descriptor)); | |
2823 | memset(dev->rx_desc, 0, NUM_RX_BUFF * sizeof(struct mal_descriptor)); | |
ab9b30cc SN |
2824 | memset(dev->tx_skb, 0, NUM_TX_BUFF * sizeof(struct sk_buff *)); |
2825 | memset(dev->rx_skb, 0, NUM_RX_BUFF * sizeof(struct sk_buff *)); | |
1d3bb996 DG |
2826 | |
2827 | /* Attach to ZMII, if needed */ | |
2828 | if (emac_has_feature(dev, EMAC_FTR_HAS_ZMII) && | |
2829 | (err = zmii_attach(dev->zmii_dev, dev->zmii_port, &dev->phy_mode)) != 0) | |
2830 | goto err_unreg_commac; | |
2831 | ||
2832 | /* Attach to RGMII, if needed */ | |
2833 | if (emac_has_feature(dev, EMAC_FTR_HAS_RGMII) && | |
2834 | (err = rgmii_attach(dev->rgmii_dev, dev->rgmii_port, dev->phy_mode)) != 0) | |
2835 | goto err_detach_zmii; | |
2836 | ||
2837 | /* Attach to TAH, if needed */ | |
2838 | if (emac_has_feature(dev, EMAC_FTR_HAS_TAH) && | |
2839 | (err = tah_attach(dev->tah_dev, dev->tah_port)) != 0) | |
2840 | goto err_detach_rgmii; | |
2841 | ||
2842 | /* Set some link defaults before we can find out real parameters */ | |
2843 | dev->phy.speed = SPEED_100; | |
2844 | dev->phy.duplex = DUPLEX_FULL; | |
2845 | dev->phy.autoneg = AUTONEG_DISABLE; | |
2846 | dev->phy.pause = dev->phy.asym_pause = 0; | |
2847 | dev->stop_timeout = STOP_TIMEOUT_100; | |
2848 | INIT_DELAYED_WORK(&dev->link_work, emac_link_timer); | |
2849 | ||
2850 | /* Find PHY if any */ | |
2851 | err = emac_init_phy(dev); | |
2852 | if (err != 0) | |
2853 | goto err_detach_tah; | |
2854 | ||
ee63d22b | 2855 | if (dev->tah_dev) |
1d3bb996 | 2856 | ndev->features |= NETIF_F_IP_CSUM | NETIF_F_SG; |
1d3bb996 | 2857 | ndev->watchdog_timeo = 5 * HZ; |
1d3bb996 | 2858 | if (emac_phy_supports_gige(dev->phy_mode)) { |
15efc02b | 2859 | ndev->netdev_ops = &emac_gige_netdev_ops; |
1d3bb996 | 2860 | dev->commac.ops = &emac_commac_sg_ops; |
15efc02b AB |
2861 | } else |
2862 | ndev->netdev_ops = &emac_netdev_ops; | |
1d3bb996 DG |
2863 | SET_ETHTOOL_OPS(ndev, &emac_ethtool_ops); |
2864 | ||
2865 | netif_carrier_off(ndev); | |
2866 | netif_stop_queue(ndev); | |
2867 | ||
2868 | err = register_netdev(ndev); | |
2869 | if (err) { | |
2870 | printk(KERN_ERR "%s: failed to register net device (%d)!\n", | |
2871 | np->full_name, err); | |
2872 | goto err_detach_tah; | |
2873 | } | |
2874 | ||
2875 | /* Set our drvdata last as we don't want them visible until we are | |
2876 | * fully initialized | |
2877 | */ | |
2878 | wmb(); | |
2879 | dev_set_drvdata(&ofdev->dev, dev); | |
2880 | ||
2881 | /* There's a new kid in town ! Let's tell everybody */ | |
2882 | wake_up_all(&emac_probe_wait); | |
2883 | ||
2884 | ||
7c510e4b JB |
2885 | printk(KERN_INFO "%s: EMAC-%d %s, MAC %pM\n", |
2886 | ndev->name, dev->cell_index, np->full_name, ndev->dev_addr); | |
1d3bb996 | 2887 | |
9e3cb294 VG |
2888 | if (dev->phy_mode == PHY_MODE_SGMII) |
2889 | printk(KERN_NOTICE "%s: in SGMII mode\n", ndev->name); | |
2890 | ||
1d3bb996 DG |
2891 | if (dev->phy.address >= 0) |
2892 | printk("%s: found %s PHY (0x%02x)\n", ndev->name, | |
2893 | dev->phy.def->name, dev->phy.address); | |
2894 | ||
2895 | emac_dbg_register(dev); | |
2896 | ||
2897 | /* Life is good */ | |
2898 | return 0; | |
2899 | ||
2900 | /* I have a bad feeling about this ... */ | |
2901 | ||
2902 | err_detach_tah: | |
2903 | if (emac_has_feature(dev, EMAC_FTR_HAS_TAH)) | |
2904 | tah_detach(dev->tah_dev, dev->tah_port); | |
2905 | err_detach_rgmii: | |
2906 | if (emac_has_feature(dev, EMAC_FTR_HAS_RGMII)) | |
2907 | rgmii_detach(dev->rgmii_dev, dev->rgmii_port); | |
2908 | err_detach_zmii: | |
2909 | if (emac_has_feature(dev, EMAC_FTR_HAS_ZMII)) | |
2910 | zmii_detach(dev->zmii_dev, dev->zmii_port); | |
2911 | err_unreg_commac: | |
2912 | mal_unregister_commac(dev->mal, &dev->commac); | |
2913 | err_rel_deps: | |
2914 | emac_put_deps(dev); | |
2915 | err_reg_unmap: | |
2916 | iounmap(dev->emacp); | |
2917 | err_irq_unmap: | |
2918 | if (dev->wol_irq != NO_IRQ) | |
2919 | irq_dispose_mapping(dev->wol_irq); | |
2920 | if (dev->emac_irq != NO_IRQ) | |
2921 | irq_dispose_mapping(dev->emac_irq); | |
2922 | err_free: | |
2923 | kfree(ndev); | |
2924 | err_gone: | |
2925 | /* if we were on the bootlist, remove us as we won't show up and | |
2926 | * wake up all waiters to notify them in case they were waiting | |
2927 | * on us | |
2928 | */ | |
2929 | if (blist) { | |
2930 | *blist = NULL; | |
2931 | wake_up_all(&emac_probe_wait); | |
2932 | } | |
2933 | return err; | |
2934 | } | |
2935 | ||
2936 | static int __devexit emac_remove(struct of_device *ofdev) | |
2937 | { | |
2938 | struct emac_instance *dev = dev_get_drvdata(&ofdev->dev); | |
2939 | ||
2940 | DBG(dev, "remove" NL); | |
2941 | ||
2942 | dev_set_drvdata(&ofdev->dev, NULL); | |
2943 | ||
2944 | unregister_netdev(dev->ndev); | |
2945 | ||
61dbcece BH |
2946 | flush_scheduled_work(); |
2947 | ||
1d3bb996 DG |
2948 | if (emac_has_feature(dev, EMAC_FTR_HAS_TAH)) |
2949 | tah_detach(dev->tah_dev, dev->tah_port); | |
2950 | if (emac_has_feature(dev, EMAC_FTR_HAS_RGMII)) | |
2951 | rgmii_detach(dev->rgmii_dev, dev->rgmii_port); | |
2952 | if (emac_has_feature(dev, EMAC_FTR_HAS_ZMII)) | |
2953 | zmii_detach(dev->zmii_dev, dev->zmii_port); | |
2954 | ||
2955 | mal_unregister_commac(dev->mal, &dev->commac); | |
2956 | emac_put_deps(dev); | |
2957 | ||
2958 | emac_dbg_unregister(dev); | |
2959 | iounmap(dev->emacp); | |
2960 | ||
2961 | if (dev->wol_irq != NO_IRQ) | |
2962 | irq_dispose_mapping(dev->wol_irq); | |
2963 | if (dev->emac_irq != NO_IRQ) | |
2964 | irq_dispose_mapping(dev->emac_irq); | |
2965 | ||
2966 | kfree(dev->ndev); | |
2967 | ||
2968 | return 0; | |
2969 | } | |
2970 | ||
2971 | /* XXX Features in here should be replaced by properties... */ | |
2972 | static struct of_device_id emac_match[] = | |
2973 | { | |
2974 | { | |
2975 | .type = "network", | |
2976 | .compatible = "ibm,emac", | |
2977 | }, | |
2978 | { | |
2979 | .type = "network", | |
2980 | .compatible = "ibm,emac4", | |
2981 | }, | |
05781ccd GE |
2982 | { |
2983 | .type = "network", | |
2984 | .compatible = "ibm,emac4sync", | |
2985 | }, | |
1d3bb996 DG |
2986 | {}, |
2987 | }; | |
2988 | ||
2989 | static struct of_platform_driver emac_driver = { | |
2990 | .name = "emac", | |
2991 | .match_table = emac_match, | |
2992 | ||
2993 | .probe = emac_probe, | |
2994 | .remove = emac_remove, | |
2995 | }; | |
2996 | ||
2997 | static void __init emac_make_bootlist(void) | |
2998 | { | |
2999 | struct device_node *np = NULL; | |
3000 | int j, max, i = 0, k; | |
3001 | int cell_indices[EMAC_BOOT_LIST_SIZE]; | |
3002 | ||
3003 | /* Collect EMACs */ | |
3004 | while((np = of_find_all_nodes(np)) != NULL) { | |
3005 | const u32 *idx; | |
3006 | ||
3007 | if (of_match_node(emac_match, np) == NULL) | |
3008 | continue; | |
3009 | if (of_get_property(np, "unused", NULL)) | |
3010 | continue; | |
3011 | idx = of_get_property(np, "cell-index", NULL); | |
3012 | if (idx == NULL) | |
3013 | continue; | |
3014 | cell_indices[i] = *idx; | |
3015 | emac_boot_list[i++] = of_node_get(np); | |
3016 | if (i >= EMAC_BOOT_LIST_SIZE) { | |
3017 | of_node_put(np); | |
3018 | break; | |
3019 | } | |
3020 | } | |
3021 | max = i; | |
3022 | ||
3023 | /* Bubble sort them (doh, what a creative algorithm :-) */ | |
3024 | for (i = 0; max > 1 && (i < (max - 1)); i++) | |
3025 | for (j = i; j < max; j++) { | |
3026 | if (cell_indices[i] > cell_indices[j]) { | |
3027 | np = emac_boot_list[i]; | |
3028 | emac_boot_list[i] = emac_boot_list[j]; | |
3029 | emac_boot_list[j] = np; | |
3030 | k = cell_indices[i]; | |
3031 | cell_indices[i] = cell_indices[j]; | |
3032 | cell_indices[j] = k; | |
3033 | } | |
3034 | } | |
3035 | } | |
3036 | ||
3037 | static int __init emac_init(void) | |
3038 | { | |
3039 | int rc; | |
3040 | ||
3041 | printk(KERN_INFO DRV_DESC ", version " DRV_VERSION "\n"); | |
3042 | ||
3043 | /* Init debug stuff */ | |
3044 | emac_init_debug(); | |
3045 | ||
3046 | /* Build EMAC boot list */ | |
3047 | emac_make_bootlist(); | |
3048 | ||
3049 | /* Init submodules */ | |
3050 | rc = mal_init(); | |
3051 | if (rc) | |
3052 | goto err; | |
3053 | rc = zmii_init(); | |
3054 | if (rc) | |
3055 | goto err_mal; | |
3056 | rc = rgmii_init(); | |
3057 | if (rc) | |
3058 | goto err_zmii; | |
3059 | rc = tah_init(); | |
3060 | if (rc) | |
3061 | goto err_rgmii; | |
3062 | rc = of_register_platform_driver(&emac_driver); | |
3063 | if (rc) | |
3064 | goto err_tah; | |
3065 | ||
3066 | return 0; | |
3067 | ||
3068 | err_tah: | |
3069 | tah_exit(); | |
3070 | err_rgmii: | |
3071 | rgmii_exit(); | |
3072 | err_zmii: | |
3073 | zmii_exit(); | |
3074 | err_mal: | |
3075 | mal_exit(); | |
3076 | err: | |
3077 | return rc; | |
3078 | } | |
3079 | ||
3080 | static void __exit emac_exit(void) | |
3081 | { | |
3082 | int i; | |
3083 | ||
3084 | of_unregister_platform_driver(&emac_driver); | |
3085 | ||
3086 | tah_exit(); | |
3087 | rgmii_exit(); | |
3088 | zmii_exit(); | |
3089 | mal_exit(); | |
3090 | emac_fini_debug(); | |
3091 | ||
3092 | /* Destroy EMAC boot list */ | |
3093 | for (i = 0; i < EMAC_BOOT_LIST_SIZE; i++) | |
3094 | if (emac_boot_list[i]) | |
3095 | of_node_put(emac_boot_list[i]); | |
3096 | } | |
3097 | ||
3098 | module_init(emac_init); | |
3099 | module_exit(emac_exit); |