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86a74ff2 NI |
1 | /* |
2 | * SuperH Ethernet device driver | |
3 | * | |
b0ca2a21 | 4 | * Copyright (C) 2006-2008 Nobuhiro Iwamatsu |
380af9e3 | 5 | * Copyright (C) 2008-2009 Renesas Solutions Corp. |
86a74ff2 NI |
6 | * |
7 | * This program is free software; you can redistribute it and/or modify it | |
8 | * under the terms and conditions of the GNU General Public License, | |
9 | * version 2, as published by the Free Software Foundation. | |
10 | * | |
11 | * This program is distributed in the hope it will be useful, but WITHOUT | |
12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
14 | * more details. | |
15 | * You should have received a copy of the GNU General Public License along with | |
16 | * this program; if not, write to the Free Software Foundation, Inc., | |
17 | * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. | |
18 | * | |
19 | * The full GNU General Public License is included in this distribution in | |
20 | * the file called "COPYING". | |
21 | */ | |
22 | ||
86a74ff2 NI |
23 | #include <linux/init.h> |
24 | #include <linux/dma-mapping.h> | |
25 | #include <linux/etherdevice.h> | |
26 | #include <linux/delay.h> | |
27 | #include <linux/platform_device.h> | |
28 | #include <linux/mdio-bitbang.h> | |
29 | #include <linux/netdevice.h> | |
30 | #include <linux/phy.h> | |
31 | #include <linux/cache.h> | |
32 | #include <linux/io.h> | |
bcd5149d | 33 | #include <linux/pm_runtime.h> |
5a0e3ad6 | 34 | #include <linux/slab.h> |
dc19e4e5 | 35 | #include <linux/ethtool.h> |
f568a926 | 36 | #include <asm/cacheflush.h> |
86a74ff2 NI |
37 | |
38 | #include "sh_eth.h" | |
39 | ||
dc19e4e5 NI |
40 | #define SH_ETH_DEF_MSG_ENABLE \ |
41 | (NETIF_MSG_LINK | \ | |
42 | NETIF_MSG_TIMER | \ | |
43 | NETIF_MSG_RX_ERR| \ | |
44 | NETIF_MSG_TX_ERR) | |
45 | ||
380af9e3 | 46 | /* There is CPU dependent code */ |
65ac8851 YS |
47 | #if defined(CONFIG_CPU_SUBTYPE_SH7724) |
48 | #define SH_ETH_RESET_DEFAULT 1 | |
49 | static void sh_eth_set_duplex(struct net_device *ndev) | |
50 | { | |
51 | struct sh_eth_private *mdp = netdev_priv(ndev); | |
65ac8851 YS |
52 | |
53 | if (mdp->duplex) /* Full */ | |
4a55530f | 54 | sh_eth_write(ndev, sh_eth_read(ndev, ECMR) | ECMR_DM, ECMR); |
65ac8851 | 55 | else /* Half */ |
4a55530f | 56 | sh_eth_write(ndev, sh_eth_read(ndev, ECMR) & ~ECMR_DM, ECMR); |
65ac8851 YS |
57 | } |
58 | ||
59 | static void sh_eth_set_rate(struct net_device *ndev) | |
60 | { | |
61 | struct sh_eth_private *mdp = netdev_priv(ndev); | |
65ac8851 YS |
62 | |
63 | switch (mdp->speed) { | |
64 | case 10: /* 10BASE */ | |
4a55530f | 65 | sh_eth_write(ndev, sh_eth_read(ndev, ECMR) & ~ECMR_RTM, ECMR); |
65ac8851 YS |
66 | break; |
67 | case 100:/* 100BASE */ | |
4a55530f | 68 | sh_eth_write(ndev, sh_eth_read(ndev, ECMR) | ECMR_RTM, ECMR); |
65ac8851 YS |
69 | break; |
70 | default: | |
71 | break; | |
72 | } | |
73 | } | |
74 | ||
75 | /* SH7724 */ | |
76 | static struct sh_eth_cpu_data sh_eth_my_cpu_data = { | |
77 | .set_duplex = sh_eth_set_duplex, | |
78 | .set_rate = sh_eth_set_rate, | |
79 | ||
80 | .ecsr_value = ECSR_PSRTO | ECSR_LCHNG | ECSR_ICD, | |
81 | .ecsipr_value = ECSIPR_PSRTOIP | ECSIPR_LCHNGIP | ECSIPR_ICDIP, | |
82 | .eesipr_value = DMAC_M_RFRMER | DMAC_M_ECI | 0x01ff009f, | |
83 | ||
84 | .tx_check = EESR_FTC | EESR_CND | EESR_DLC | EESR_CD | EESR_RTO, | |
85 | .eesr_err_check = EESR_TWB | EESR_TABT | EESR_RABT | EESR_RDE | | |
86 | EESR_RFRMER | EESR_TFE | EESR_TDE | EESR_ECI, | |
87 | .tx_error_check = EESR_TWB | EESR_TABT | EESR_TDE | EESR_TFE, | |
88 | ||
89 | .apr = 1, | |
90 | .mpr = 1, | |
91 | .tpauser = 1, | |
92 | .hw_swap = 1, | |
503914cf MD |
93 | .rpadir = 1, |
94 | .rpadir_value = 0x00020000, /* NET_IP_ALIGN assumed to be 2 */ | |
65ac8851 | 95 | }; |
f29a3d04 YS |
96 | #elif defined(CONFIG_CPU_SUBTYPE_SH7757) |
97 | #define SH_ETH_RESET_DEFAULT 1 | |
98 | static void sh_eth_set_duplex(struct net_device *ndev) | |
99 | { | |
100 | struct sh_eth_private *mdp = netdev_priv(ndev); | |
f29a3d04 YS |
101 | |
102 | if (mdp->duplex) /* Full */ | |
4a55530f | 103 | sh_eth_write(ndev, sh_eth_read(ndev, ECMR) | ECMR_DM, ECMR); |
f29a3d04 | 104 | else /* Half */ |
4a55530f | 105 | sh_eth_write(ndev, sh_eth_read(ndev, ECMR) & ~ECMR_DM, ECMR); |
f29a3d04 YS |
106 | } |
107 | ||
108 | static void sh_eth_set_rate(struct net_device *ndev) | |
109 | { | |
110 | struct sh_eth_private *mdp = netdev_priv(ndev); | |
f29a3d04 YS |
111 | |
112 | switch (mdp->speed) { | |
113 | case 10: /* 10BASE */ | |
4a55530f | 114 | sh_eth_write(ndev, 0, RTRATE); |
f29a3d04 YS |
115 | break; |
116 | case 100:/* 100BASE */ | |
4a55530f | 117 | sh_eth_write(ndev, 1, RTRATE); |
f29a3d04 YS |
118 | break; |
119 | default: | |
120 | break; | |
121 | } | |
122 | } | |
123 | ||
124 | /* SH7757 */ | |
125 | static struct sh_eth_cpu_data sh_eth_my_cpu_data = { | |
126 | .set_duplex = sh_eth_set_duplex, | |
127 | .set_rate = sh_eth_set_rate, | |
128 | ||
129 | .eesipr_value = DMAC_M_RFRMER | DMAC_M_ECI | 0x003fffff, | |
130 | .rmcr_value = 0x00000001, | |
131 | ||
132 | .tx_check = EESR_FTC | EESR_CND | EESR_DLC | EESR_CD | EESR_RTO, | |
133 | .eesr_err_check = EESR_TWB | EESR_TABT | EESR_RABT | EESR_RDE | | |
134 | EESR_RFRMER | EESR_TFE | EESR_TDE | EESR_ECI, | |
135 | .tx_error_check = EESR_TWB | EESR_TABT | EESR_TDE | EESR_TFE, | |
136 | ||
137 | .apr = 1, | |
138 | .mpr = 1, | |
139 | .tpauser = 1, | |
140 | .hw_swap = 1, | |
141 | .no_ade = 1, | |
142 | }; | |
65ac8851 YS |
143 | |
144 | #elif defined(CONFIG_CPU_SUBTYPE_SH7763) | |
380af9e3 YS |
145 | #define SH_ETH_HAS_TSU 1 |
146 | static void sh_eth_chip_reset(struct net_device *ndev) | |
147 | { | |
4986b996 YS |
148 | struct sh_eth_private *mdp = netdev_priv(ndev); |
149 | ||
380af9e3 | 150 | /* reset device */ |
4986b996 | 151 | sh_eth_tsu_write(mdp, ARSTR_ARSTR, ARSTR); |
380af9e3 YS |
152 | mdelay(1); |
153 | } | |
154 | ||
155 | static void sh_eth_reset(struct net_device *ndev) | |
156 | { | |
380af9e3 YS |
157 | int cnt = 100; |
158 | ||
4a55530f YS |
159 | sh_eth_write(ndev, EDSR_ENALL, EDSR); |
160 | sh_eth_write(ndev, sh_eth_read(ndev, EDMR) | EDMR_SRST, EDMR); | |
380af9e3 | 161 | while (cnt > 0) { |
4a55530f | 162 | if (!(sh_eth_read(ndev, EDMR) & 0x3)) |
380af9e3 YS |
163 | break; |
164 | mdelay(1); | |
165 | cnt--; | |
166 | } | |
890c8c18 | 167 | if (cnt == 0) |
380af9e3 YS |
168 | printk(KERN_ERR "Device reset fail\n"); |
169 | ||
170 | /* Table Init */ | |
4a55530f YS |
171 | sh_eth_write(ndev, 0x0, TDLAR); |
172 | sh_eth_write(ndev, 0x0, TDFAR); | |
173 | sh_eth_write(ndev, 0x0, TDFXR); | |
174 | sh_eth_write(ndev, 0x0, TDFFR); | |
175 | sh_eth_write(ndev, 0x0, RDLAR); | |
176 | sh_eth_write(ndev, 0x0, RDFAR); | |
177 | sh_eth_write(ndev, 0x0, RDFXR); | |
178 | sh_eth_write(ndev, 0x0, RDFFR); | |
380af9e3 YS |
179 | } |
180 | ||
181 | static void sh_eth_set_duplex(struct net_device *ndev) | |
182 | { | |
183 | struct sh_eth_private *mdp = netdev_priv(ndev); | |
380af9e3 YS |
184 | |
185 | if (mdp->duplex) /* Full */ | |
4a55530f | 186 | sh_eth_write(ndev, sh_eth_read(ndev, ECMR) | ECMR_DM, ECMR); |
380af9e3 | 187 | else /* Half */ |
4a55530f | 188 | sh_eth_write(ndev, sh_eth_read(ndev, ECMR) & ~ECMR_DM, ECMR); |
380af9e3 YS |
189 | } |
190 | ||
191 | static void sh_eth_set_rate(struct net_device *ndev) | |
192 | { | |
193 | struct sh_eth_private *mdp = netdev_priv(ndev); | |
380af9e3 YS |
194 | |
195 | switch (mdp->speed) { | |
196 | case 10: /* 10BASE */ | |
4a55530f | 197 | sh_eth_write(ndev, GECMR_10, GECMR); |
380af9e3 YS |
198 | break; |
199 | case 100:/* 100BASE */ | |
4a55530f | 200 | sh_eth_write(ndev, GECMR_100, GECMR); |
380af9e3 YS |
201 | break; |
202 | case 1000: /* 1000BASE */ | |
4a55530f | 203 | sh_eth_write(ndev, GECMR_1000, GECMR); |
380af9e3 YS |
204 | break; |
205 | default: | |
206 | break; | |
207 | } | |
208 | } | |
209 | ||
210 | /* sh7763 */ | |
211 | static struct sh_eth_cpu_data sh_eth_my_cpu_data = { | |
212 | .chip_reset = sh_eth_chip_reset, | |
213 | .set_duplex = sh_eth_set_duplex, | |
214 | .set_rate = sh_eth_set_rate, | |
215 | ||
216 | .ecsr_value = ECSR_ICD | ECSR_MPD, | |
217 | .ecsipr_value = ECSIPR_LCHNGIP | ECSIPR_ICDIP | ECSIPR_MPDIP, | |
218 | .eesipr_value = DMAC_M_RFRMER | DMAC_M_ECI | 0x003fffff, | |
219 | ||
220 | .tx_check = EESR_TC1 | EESR_FTC, | |
221 | .eesr_err_check = EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_RABT | \ | |
222 | EESR_RDE | EESR_RFRMER | EESR_TFE | EESR_TDE | \ | |
223 | EESR_ECI, | |
224 | .tx_error_check = EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_TDE | \ | |
225 | EESR_TFE, | |
226 | ||
227 | .apr = 1, | |
228 | .mpr = 1, | |
229 | .tpauser = 1, | |
230 | .bculr = 1, | |
231 | .hw_swap = 1, | |
380af9e3 YS |
232 | .no_trimd = 1, |
233 | .no_ade = 1, | |
4986b996 | 234 | .tsu = 1, |
380af9e3 YS |
235 | }; |
236 | ||
237 | #elif defined(CONFIG_CPU_SUBTYPE_SH7619) | |
238 | #define SH_ETH_RESET_DEFAULT 1 | |
239 | static struct sh_eth_cpu_data sh_eth_my_cpu_data = { | |
240 | .eesipr_value = DMAC_M_RFRMER | DMAC_M_ECI | 0x003fffff, | |
241 | ||
242 | .apr = 1, | |
243 | .mpr = 1, | |
244 | .tpauser = 1, | |
245 | .hw_swap = 1, | |
246 | }; | |
247 | #elif defined(CONFIG_CPU_SUBTYPE_SH7710) || defined(CONFIG_CPU_SUBTYPE_SH7712) | |
248 | #define SH_ETH_RESET_DEFAULT 1 | |
249 | #define SH_ETH_HAS_TSU 1 | |
250 | static struct sh_eth_cpu_data sh_eth_my_cpu_data = { | |
251 | .eesipr_value = DMAC_M_RFRMER | DMAC_M_ECI | 0x003fffff, | |
4986b996 | 252 | .tsu = 1, |
380af9e3 YS |
253 | }; |
254 | #endif | |
255 | ||
256 | static void sh_eth_set_default_cpu_data(struct sh_eth_cpu_data *cd) | |
257 | { | |
258 | if (!cd->ecsr_value) | |
259 | cd->ecsr_value = DEFAULT_ECSR_INIT; | |
260 | ||
261 | if (!cd->ecsipr_value) | |
262 | cd->ecsipr_value = DEFAULT_ECSIPR_INIT; | |
263 | ||
264 | if (!cd->fcftr_value) | |
265 | cd->fcftr_value = DEFAULT_FIFO_F_D_RFF | \ | |
266 | DEFAULT_FIFO_F_D_RFD; | |
267 | ||
268 | if (!cd->fdr_value) | |
269 | cd->fdr_value = DEFAULT_FDR_INIT; | |
270 | ||
271 | if (!cd->rmcr_value) | |
272 | cd->rmcr_value = DEFAULT_RMCR_VALUE; | |
273 | ||
274 | if (!cd->tx_check) | |
275 | cd->tx_check = DEFAULT_TX_CHECK; | |
276 | ||
277 | if (!cd->eesr_err_check) | |
278 | cd->eesr_err_check = DEFAULT_EESR_ERR_CHECK; | |
279 | ||
280 | if (!cd->tx_error_check) | |
281 | cd->tx_error_check = DEFAULT_TX_ERROR_CHECK; | |
282 | } | |
283 | ||
284 | #if defined(SH_ETH_RESET_DEFAULT) | |
285 | /* Chip Reset */ | |
286 | static void sh_eth_reset(struct net_device *ndev) | |
287 | { | |
4a55530f | 288 | sh_eth_write(ndev, sh_eth_read(ndev, EDMR) | EDMR_SRST, EDMR); |
380af9e3 | 289 | mdelay(3); |
4a55530f | 290 | sh_eth_write(ndev, sh_eth_read(ndev, EDMR) & ~EDMR_SRST, EDMR); |
380af9e3 YS |
291 | } |
292 | #endif | |
293 | ||
294 | #if defined(CONFIG_CPU_SH4) | |
295 | static void sh_eth_set_receive_align(struct sk_buff *skb) | |
296 | { | |
297 | int reserve; | |
298 | ||
299 | reserve = SH4_SKB_RX_ALIGN - ((u32)skb->data & (SH4_SKB_RX_ALIGN - 1)); | |
300 | if (reserve) | |
301 | skb_reserve(skb, reserve); | |
302 | } | |
303 | #else | |
304 | static void sh_eth_set_receive_align(struct sk_buff *skb) | |
305 | { | |
306 | skb_reserve(skb, SH2_SH3_SKB_RX_ALIGN); | |
307 | } | |
308 | #endif | |
309 | ||
310 | ||
71557a37 YS |
311 | /* CPU <-> EDMAC endian convert */ |
312 | static inline __u32 cpu_to_edmac(struct sh_eth_private *mdp, u32 x) | |
313 | { | |
314 | switch (mdp->edmac_endian) { | |
315 | case EDMAC_LITTLE_ENDIAN: | |
316 | return cpu_to_le32(x); | |
317 | case EDMAC_BIG_ENDIAN: | |
318 | return cpu_to_be32(x); | |
319 | } | |
320 | return x; | |
321 | } | |
322 | ||
323 | static inline __u32 edmac_to_cpu(struct sh_eth_private *mdp, u32 x) | |
324 | { | |
325 | switch (mdp->edmac_endian) { | |
326 | case EDMAC_LITTLE_ENDIAN: | |
327 | return le32_to_cpu(x); | |
328 | case EDMAC_BIG_ENDIAN: | |
329 | return be32_to_cpu(x); | |
330 | } | |
331 | return x; | |
332 | } | |
333 | ||
86a74ff2 NI |
334 | /* |
335 | * Program the hardware MAC address from dev->dev_addr. | |
336 | */ | |
337 | static void update_mac_address(struct net_device *ndev) | |
338 | { | |
4a55530f YS |
339 | sh_eth_write(ndev, |
340 | (ndev->dev_addr[0] << 24) | (ndev->dev_addr[1] << 16) | | |
341 | (ndev->dev_addr[2] << 8) | (ndev->dev_addr[3]), MAHR); | |
342 | sh_eth_write(ndev, | |
343 | (ndev->dev_addr[4] << 8) | (ndev->dev_addr[5]), MALR); | |
86a74ff2 NI |
344 | } |
345 | ||
346 | /* | |
347 | * Get MAC address from SuperH MAC address register | |
348 | * | |
349 | * SuperH's Ethernet device doesn't have 'ROM' to MAC address. | |
350 | * This driver get MAC address that use by bootloader(U-boot or sh-ipl+g). | |
351 | * When you want use this device, you must set MAC address in bootloader. | |
352 | * | |
353 | */ | |
748031f9 | 354 | static void read_mac_address(struct net_device *ndev, unsigned char *mac) |
86a74ff2 | 355 | { |
748031f9 MD |
356 | if (mac[0] || mac[1] || mac[2] || mac[3] || mac[4] || mac[5]) { |
357 | memcpy(ndev->dev_addr, mac, 6); | |
358 | } else { | |
4a55530f YS |
359 | ndev->dev_addr[0] = (sh_eth_read(ndev, MAHR) >> 24); |
360 | ndev->dev_addr[1] = (sh_eth_read(ndev, MAHR) >> 16) & 0xFF; | |
361 | ndev->dev_addr[2] = (sh_eth_read(ndev, MAHR) >> 8) & 0xFF; | |
362 | ndev->dev_addr[3] = (sh_eth_read(ndev, MAHR) & 0xFF); | |
363 | ndev->dev_addr[4] = (sh_eth_read(ndev, MALR) >> 8) & 0xFF; | |
364 | ndev->dev_addr[5] = (sh_eth_read(ndev, MALR) & 0xFF); | |
748031f9 | 365 | } |
86a74ff2 NI |
366 | } |
367 | ||
368 | struct bb_info { | |
369 | struct mdiobb_ctrl ctrl; | |
370 | u32 addr; | |
371 | u32 mmd_msk;/* MMD */ | |
372 | u32 mdo_msk; | |
373 | u32 mdi_msk; | |
374 | u32 mdc_msk; | |
375 | }; | |
376 | ||
377 | /* PHY bit set */ | |
378 | static void bb_set(u32 addr, u32 msk) | |
379 | { | |
900fcf09 | 380 | writel(readl(addr) | msk, addr); |
86a74ff2 NI |
381 | } |
382 | ||
383 | /* PHY bit clear */ | |
384 | static void bb_clr(u32 addr, u32 msk) | |
385 | { | |
900fcf09 | 386 | writel((readl(addr) & ~msk), addr); |
86a74ff2 NI |
387 | } |
388 | ||
389 | /* PHY bit read */ | |
390 | static int bb_read(u32 addr, u32 msk) | |
391 | { | |
900fcf09 | 392 | return (readl(addr) & msk) != 0; |
86a74ff2 NI |
393 | } |
394 | ||
395 | /* Data I/O pin control */ | |
396 | static void sh_mmd_ctrl(struct mdiobb_ctrl *ctrl, int bit) | |
397 | { | |
398 | struct bb_info *bitbang = container_of(ctrl, struct bb_info, ctrl); | |
399 | if (bit) | |
400 | bb_set(bitbang->addr, bitbang->mmd_msk); | |
401 | else | |
402 | bb_clr(bitbang->addr, bitbang->mmd_msk); | |
403 | } | |
404 | ||
405 | /* Set bit data*/ | |
406 | static void sh_set_mdio(struct mdiobb_ctrl *ctrl, int bit) | |
407 | { | |
408 | struct bb_info *bitbang = container_of(ctrl, struct bb_info, ctrl); | |
409 | ||
410 | if (bit) | |
411 | bb_set(bitbang->addr, bitbang->mdo_msk); | |
412 | else | |
413 | bb_clr(bitbang->addr, bitbang->mdo_msk); | |
414 | } | |
415 | ||
416 | /* Get bit data*/ | |
417 | static int sh_get_mdio(struct mdiobb_ctrl *ctrl) | |
418 | { | |
419 | struct bb_info *bitbang = container_of(ctrl, struct bb_info, ctrl); | |
420 | return bb_read(bitbang->addr, bitbang->mdi_msk); | |
421 | } | |
422 | ||
423 | /* MDC pin control */ | |
424 | static void sh_mdc_ctrl(struct mdiobb_ctrl *ctrl, int bit) | |
425 | { | |
426 | struct bb_info *bitbang = container_of(ctrl, struct bb_info, ctrl); | |
427 | ||
428 | if (bit) | |
429 | bb_set(bitbang->addr, bitbang->mdc_msk); | |
430 | else | |
431 | bb_clr(bitbang->addr, bitbang->mdc_msk); | |
432 | } | |
433 | ||
434 | /* mdio bus control struct */ | |
435 | static struct mdiobb_ops bb_ops = { | |
436 | .owner = THIS_MODULE, | |
437 | .set_mdc = sh_mdc_ctrl, | |
438 | .set_mdio_dir = sh_mmd_ctrl, | |
439 | .set_mdio_data = sh_set_mdio, | |
440 | .get_mdio_data = sh_get_mdio, | |
441 | }; | |
442 | ||
86a74ff2 NI |
443 | /* free skb and descriptor buffer */ |
444 | static void sh_eth_ring_free(struct net_device *ndev) | |
445 | { | |
446 | struct sh_eth_private *mdp = netdev_priv(ndev); | |
447 | int i; | |
448 | ||
449 | /* Free Rx skb ringbuffer */ | |
450 | if (mdp->rx_skbuff) { | |
451 | for (i = 0; i < RX_RING_SIZE; i++) { | |
452 | if (mdp->rx_skbuff[i]) | |
453 | dev_kfree_skb(mdp->rx_skbuff[i]); | |
454 | } | |
455 | } | |
456 | kfree(mdp->rx_skbuff); | |
457 | ||
458 | /* Free Tx skb ringbuffer */ | |
459 | if (mdp->tx_skbuff) { | |
460 | for (i = 0; i < TX_RING_SIZE; i++) { | |
461 | if (mdp->tx_skbuff[i]) | |
462 | dev_kfree_skb(mdp->tx_skbuff[i]); | |
463 | } | |
464 | } | |
465 | kfree(mdp->tx_skbuff); | |
466 | } | |
467 | ||
468 | /* format skb and descriptor buffer */ | |
469 | static void sh_eth_ring_format(struct net_device *ndev) | |
470 | { | |
471 | struct sh_eth_private *mdp = netdev_priv(ndev); | |
472 | int i; | |
473 | struct sk_buff *skb; | |
474 | struct sh_eth_rxdesc *rxdesc = NULL; | |
475 | struct sh_eth_txdesc *txdesc = NULL; | |
476 | int rx_ringsize = sizeof(*rxdesc) * RX_RING_SIZE; | |
477 | int tx_ringsize = sizeof(*txdesc) * TX_RING_SIZE; | |
478 | ||
479 | mdp->cur_rx = mdp->cur_tx = 0; | |
480 | mdp->dirty_rx = mdp->dirty_tx = 0; | |
481 | ||
482 | memset(mdp->rx_ring, 0, rx_ringsize); | |
483 | ||
484 | /* build Rx ring buffer */ | |
485 | for (i = 0; i < RX_RING_SIZE; i++) { | |
486 | /* skb */ | |
487 | mdp->rx_skbuff[i] = NULL; | |
488 | skb = dev_alloc_skb(mdp->rx_buf_sz); | |
489 | mdp->rx_skbuff[i] = skb; | |
490 | if (skb == NULL) | |
491 | break; | |
e88aae7b YS |
492 | dma_map_single(&ndev->dev, skb->tail, mdp->rx_buf_sz, |
493 | DMA_FROM_DEVICE); | |
b0ca2a21 | 494 | skb->dev = ndev; /* Mark as being used by this device. */ |
380af9e3 YS |
495 | sh_eth_set_receive_align(skb); |
496 | ||
86a74ff2 NI |
497 | /* RX descriptor */ |
498 | rxdesc = &mdp->rx_ring[i]; | |
0029d64a | 499 | rxdesc->addr = virt_to_phys(PTR_ALIGN(skb->data, 4)); |
71557a37 | 500 | rxdesc->status = cpu_to_edmac(mdp, RD_RACT | RD_RFP); |
86a74ff2 NI |
501 | |
502 | /* The size of the buffer is 16 byte boundary. */ | |
0029d64a | 503 | rxdesc->buffer_length = ALIGN(mdp->rx_buf_sz, 16); |
b0ca2a21 NI |
504 | /* Rx descriptor address set */ |
505 | if (i == 0) { | |
4a55530f | 506 | sh_eth_write(ndev, mdp->rx_desc_dma, RDLAR); |
b0ca2a21 | 507 | #if defined(CONFIG_CPU_SUBTYPE_SH7763) |
4a55530f | 508 | sh_eth_write(ndev, mdp->rx_desc_dma, RDFAR); |
b0ca2a21 NI |
509 | #endif |
510 | } | |
86a74ff2 NI |
511 | } |
512 | ||
513 | mdp->dirty_rx = (u32) (i - RX_RING_SIZE); | |
514 | ||
515 | /* Mark the last entry as wrapping the ring. */ | |
71557a37 | 516 | rxdesc->status |= cpu_to_edmac(mdp, RD_RDEL); |
86a74ff2 NI |
517 | |
518 | memset(mdp->tx_ring, 0, tx_ringsize); | |
519 | ||
520 | /* build Tx ring buffer */ | |
521 | for (i = 0; i < TX_RING_SIZE; i++) { | |
522 | mdp->tx_skbuff[i] = NULL; | |
523 | txdesc = &mdp->tx_ring[i]; | |
71557a37 | 524 | txdesc->status = cpu_to_edmac(mdp, TD_TFP); |
86a74ff2 | 525 | txdesc->buffer_length = 0; |
b0ca2a21 | 526 | if (i == 0) { |
71557a37 | 527 | /* Tx descriptor address set */ |
4a55530f | 528 | sh_eth_write(ndev, mdp->tx_desc_dma, TDLAR); |
b0ca2a21 | 529 | #if defined(CONFIG_CPU_SUBTYPE_SH7763) |
4a55530f | 530 | sh_eth_write(ndev, mdp->tx_desc_dma, TDFAR); |
b0ca2a21 NI |
531 | #endif |
532 | } | |
86a74ff2 NI |
533 | } |
534 | ||
71557a37 | 535 | txdesc->status |= cpu_to_edmac(mdp, TD_TDLE); |
86a74ff2 NI |
536 | } |
537 | ||
538 | /* Get skb and descriptor buffer */ | |
539 | static int sh_eth_ring_init(struct net_device *ndev) | |
540 | { | |
541 | struct sh_eth_private *mdp = netdev_priv(ndev); | |
542 | int rx_ringsize, tx_ringsize, ret = 0; | |
543 | ||
544 | /* | |
545 | * +26 gets the maximum ethernet encapsulation, +7 & ~7 because the | |
546 | * card needs room to do 8 byte alignment, +2 so we can reserve | |
547 | * the first 2 bytes, and +16 gets room for the status word from the | |
548 | * card. | |
549 | */ | |
550 | mdp->rx_buf_sz = (ndev->mtu <= 1492 ? PKT_BUF_SZ : | |
551 | (((ndev->mtu + 26 + 7) & ~7) + 2 + 16)); | |
503914cf MD |
552 | if (mdp->cd->rpadir) |
553 | mdp->rx_buf_sz += NET_IP_ALIGN; | |
86a74ff2 NI |
554 | |
555 | /* Allocate RX and TX skb rings */ | |
556 | mdp->rx_skbuff = kmalloc(sizeof(*mdp->rx_skbuff) * RX_RING_SIZE, | |
557 | GFP_KERNEL); | |
558 | if (!mdp->rx_skbuff) { | |
380af9e3 | 559 | dev_err(&ndev->dev, "Cannot allocate Rx skb\n"); |
86a74ff2 NI |
560 | ret = -ENOMEM; |
561 | return ret; | |
562 | } | |
563 | ||
564 | mdp->tx_skbuff = kmalloc(sizeof(*mdp->tx_skbuff) * TX_RING_SIZE, | |
565 | GFP_KERNEL); | |
566 | if (!mdp->tx_skbuff) { | |
380af9e3 | 567 | dev_err(&ndev->dev, "Cannot allocate Tx skb\n"); |
86a74ff2 NI |
568 | ret = -ENOMEM; |
569 | goto skb_ring_free; | |
570 | } | |
571 | ||
572 | /* Allocate all Rx descriptors. */ | |
573 | rx_ringsize = sizeof(struct sh_eth_rxdesc) * RX_RING_SIZE; | |
574 | mdp->rx_ring = dma_alloc_coherent(NULL, rx_ringsize, &mdp->rx_desc_dma, | |
575 | GFP_KERNEL); | |
576 | ||
577 | if (!mdp->rx_ring) { | |
380af9e3 YS |
578 | dev_err(&ndev->dev, "Cannot allocate Rx Ring (size %d bytes)\n", |
579 | rx_ringsize); | |
86a74ff2 NI |
580 | ret = -ENOMEM; |
581 | goto desc_ring_free; | |
582 | } | |
583 | ||
584 | mdp->dirty_rx = 0; | |
585 | ||
586 | /* Allocate all Tx descriptors. */ | |
587 | tx_ringsize = sizeof(struct sh_eth_txdesc) * TX_RING_SIZE; | |
588 | mdp->tx_ring = dma_alloc_coherent(NULL, tx_ringsize, &mdp->tx_desc_dma, | |
589 | GFP_KERNEL); | |
590 | if (!mdp->tx_ring) { | |
380af9e3 YS |
591 | dev_err(&ndev->dev, "Cannot allocate Tx Ring (size %d bytes)\n", |
592 | tx_ringsize); | |
86a74ff2 NI |
593 | ret = -ENOMEM; |
594 | goto desc_ring_free; | |
595 | } | |
596 | return ret; | |
597 | ||
598 | desc_ring_free: | |
599 | /* free DMA buffer */ | |
600 | dma_free_coherent(NULL, rx_ringsize, mdp->rx_ring, mdp->rx_desc_dma); | |
601 | ||
602 | skb_ring_free: | |
603 | /* Free Rx and Tx skb ring buffer */ | |
604 | sh_eth_ring_free(ndev); | |
605 | ||
606 | return ret; | |
607 | } | |
608 | ||
609 | static int sh_eth_dev_init(struct net_device *ndev) | |
610 | { | |
611 | int ret = 0; | |
612 | struct sh_eth_private *mdp = netdev_priv(ndev); | |
86a74ff2 NI |
613 | u_int32_t rx_int_var, tx_int_var; |
614 | u32 val; | |
615 | ||
616 | /* Soft Reset */ | |
617 | sh_eth_reset(ndev); | |
618 | ||
b0ca2a21 NI |
619 | /* Descriptor format */ |
620 | sh_eth_ring_format(ndev); | |
380af9e3 | 621 | if (mdp->cd->rpadir) |
4a55530f | 622 | sh_eth_write(ndev, mdp->cd->rpadir_value, RPADIR); |
86a74ff2 NI |
623 | |
624 | /* all sh_eth int mask */ | |
4a55530f | 625 | sh_eth_write(ndev, 0, EESIPR); |
86a74ff2 | 626 | |
380af9e3 YS |
627 | #if defined(__LITTLE_ENDIAN__) |
628 | if (mdp->cd->hw_swap) | |
4a55530f | 629 | sh_eth_write(ndev, EDMR_EL, EDMR); |
380af9e3 | 630 | else |
b0ca2a21 | 631 | #endif |
4a55530f | 632 | sh_eth_write(ndev, 0, EDMR); |
86a74ff2 | 633 | |
b0ca2a21 | 634 | /* FIFO size set */ |
4a55530f YS |
635 | sh_eth_write(ndev, mdp->cd->fdr_value, FDR); |
636 | sh_eth_write(ndev, 0, TFTR); | |
86a74ff2 | 637 | |
b0ca2a21 | 638 | /* Frame recv control */ |
4a55530f | 639 | sh_eth_write(ndev, mdp->cd->rmcr_value, RMCR); |
86a74ff2 NI |
640 | |
641 | rx_int_var = mdp->rx_int_var = DESC_I_RINT8 | DESC_I_RINT5; | |
642 | tx_int_var = mdp->tx_int_var = DESC_I_TINT2; | |
4a55530f | 643 | sh_eth_write(ndev, rx_int_var | tx_int_var, TRSCER); |
86a74ff2 | 644 | |
380af9e3 | 645 | if (mdp->cd->bculr) |
4a55530f | 646 | sh_eth_write(ndev, 0x800, BCULR); /* Burst sycle set */ |
b0ca2a21 | 647 | |
4a55530f | 648 | sh_eth_write(ndev, mdp->cd->fcftr_value, FCFTR); |
86a74ff2 | 649 | |
380af9e3 | 650 | if (!mdp->cd->no_trimd) |
4a55530f | 651 | sh_eth_write(ndev, 0, TRIMD); |
86a74ff2 | 652 | |
b0ca2a21 | 653 | /* Recv frame limit set register */ |
4a55530f | 654 | sh_eth_write(ndev, RFLR_VALUE, RFLR); |
86a74ff2 | 655 | |
4a55530f YS |
656 | sh_eth_write(ndev, sh_eth_read(ndev, EESR), EESR); |
657 | sh_eth_write(ndev, mdp->cd->eesipr_value, EESIPR); | |
86a74ff2 NI |
658 | |
659 | /* PAUSE Prohibition */ | |
4a55530f | 660 | val = (sh_eth_read(ndev, ECMR) & ECMR_DM) | |
86a74ff2 NI |
661 | ECMR_ZPF | (mdp->duplex ? ECMR_DM : 0) | ECMR_TE | ECMR_RE; |
662 | ||
4a55530f | 663 | sh_eth_write(ndev, val, ECMR); |
b0ca2a21 | 664 | |
380af9e3 YS |
665 | if (mdp->cd->set_rate) |
666 | mdp->cd->set_rate(ndev); | |
667 | ||
b0ca2a21 | 668 | /* E-MAC Status Register clear */ |
4a55530f | 669 | sh_eth_write(ndev, mdp->cd->ecsr_value, ECSR); |
b0ca2a21 NI |
670 | |
671 | /* E-MAC Interrupt Enable register */ | |
4a55530f | 672 | sh_eth_write(ndev, mdp->cd->ecsipr_value, ECSIPR); |
86a74ff2 NI |
673 | |
674 | /* Set MAC address */ | |
675 | update_mac_address(ndev); | |
676 | ||
677 | /* mask reset */ | |
380af9e3 | 678 | if (mdp->cd->apr) |
4a55530f | 679 | sh_eth_write(ndev, APR_AP, APR); |
380af9e3 | 680 | if (mdp->cd->mpr) |
4a55530f | 681 | sh_eth_write(ndev, MPR_MP, MPR); |
380af9e3 | 682 | if (mdp->cd->tpauser) |
4a55530f | 683 | sh_eth_write(ndev, TPAUSER_UNLIMITED, TPAUSER); |
b0ca2a21 | 684 | |
86a74ff2 | 685 | /* Setting the Rx mode will start the Rx process. */ |
4a55530f | 686 | sh_eth_write(ndev, EDRRR_R, EDRRR); |
86a74ff2 NI |
687 | |
688 | netif_start_queue(ndev); | |
689 | ||
690 | return ret; | |
691 | } | |
692 | ||
693 | /* free Tx skb function */ | |
694 | static int sh_eth_txfree(struct net_device *ndev) | |
695 | { | |
696 | struct sh_eth_private *mdp = netdev_priv(ndev); | |
697 | struct sh_eth_txdesc *txdesc; | |
698 | int freeNum = 0; | |
699 | int entry = 0; | |
700 | ||
701 | for (; mdp->cur_tx - mdp->dirty_tx > 0; mdp->dirty_tx++) { | |
702 | entry = mdp->dirty_tx % TX_RING_SIZE; | |
703 | txdesc = &mdp->tx_ring[entry]; | |
71557a37 | 704 | if (txdesc->status & cpu_to_edmac(mdp, TD_TACT)) |
86a74ff2 NI |
705 | break; |
706 | /* Free the original skb. */ | |
707 | if (mdp->tx_skbuff[entry]) { | |
708 | dev_kfree_skb_irq(mdp->tx_skbuff[entry]); | |
709 | mdp->tx_skbuff[entry] = NULL; | |
710 | freeNum++; | |
711 | } | |
71557a37 | 712 | txdesc->status = cpu_to_edmac(mdp, TD_TFP); |
86a74ff2 | 713 | if (entry >= TX_RING_SIZE - 1) |
71557a37 | 714 | txdesc->status |= cpu_to_edmac(mdp, TD_TDLE); |
86a74ff2 NI |
715 | |
716 | mdp->stats.tx_packets++; | |
717 | mdp->stats.tx_bytes += txdesc->buffer_length; | |
718 | } | |
719 | return freeNum; | |
720 | } | |
721 | ||
722 | /* Packet receive function */ | |
723 | static int sh_eth_rx(struct net_device *ndev) | |
724 | { | |
725 | struct sh_eth_private *mdp = netdev_priv(ndev); | |
726 | struct sh_eth_rxdesc *rxdesc; | |
727 | ||
728 | int entry = mdp->cur_rx % RX_RING_SIZE; | |
729 | int boguscnt = (mdp->dirty_rx + RX_RING_SIZE) - mdp->cur_rx; | |
730 | struct sk_buff *skb; | |
731 | u16 pkt_len = 0; | |
380af9e3 | 732 | u32 desc_status; |
86a74ff2 NI |
733 | |
734 | rxdesc = &mdp->rx_ring[entry]; | |
71557a37 YS |
735 | while (!(rxdesc->status & cpu_to_edmac(mdp, RD_RACT))) { |
736 | desc_status = edmac_to_cpu(mdp, rxdesc->status); | |
86a74ff2 NI |
737 | pkt_len = rxdesc->frame_length; |
738 | ||
739 | if (--boguscnt < 0) | |
740 | break; | |
741 | ||
742 | if (!(desc_status & RDFEND)) | |
743 | mdp->stats.rx_length_errors++; | |
744 | ||
745 | if (desc_status & (RD_RFS1 | RD_RFS2 | RD_RFS3 | RD_RFS4 | | |
746 | RD_RFS5 | RD_RFS6 | RD_RFS10)) { | |
747 | mdp->stats.rx_errors++; | |
748 | if (desc_status & RD_RFS1) | |
749 | mdp->stats.rx_crc_errors++; | |
750 | if (desc_status & RD_RFS2) | |
751 | mdp->stats.rx_frame_errors++; | |
752 | if (desc_status & RD_RFS3) | |
753 | mdp->stats.rx_length_errors++; | |
754 | if (desc_status & RD_RFS4) | |
755 | mdp->stats.rx_length_errors++; | |
756 | if (desc_status & RD_RFS6) | |
757 | mdp->stats.rx_missed_errors++; | |
758 | if (desc_status & RD_RFS10) | |
759 | mdp->stats.rx_over_errors++; | |
760 | } else { | |
380af9e3 YS |
761 | if (!mdp->cd->hw_swap) |
762 | sh_eth_soft_swap( | |
763 | phys_to_virt(ALIGN(rxdesc->addr, 4)), | |
764 | pkt_len + 2); | |
86a74ff2 NI |
765 | skb = mdp->rx_skbuff[entry]; |
766 | mdp->rx_skbuff[entry] = NULL; | |
503914cf MD |
767 | if (mdp->cd->rpadir) |
768 | skb_reserve(skb, NET_IP_ALIGN); | |
86a74ff2 NI |
769 | skb_put(skb, pkt_len); |
770 | skb->protocol = eth_type_trans(skb, ndev); | |
771 | netif_rx(skb); | |
86a74ff2 NI |
772 | mdp->stats.rx_packets++; |
773 | mdp->stats.rx_bytes += pkt_len; | |
774 | } | |
71557a37 | 775 | rxdesc->status |= cpu_to_edmac(mdp, RD_RACT); |
86a74ff2 | 776 | entry = (++mdp->cur_rx) % RX_RING_SIZE; |
862df497 | 777 | rxdesc = &mdp->rx_ring[entry]; |
86a74ff2 NI |
778 | } |
779 | ||
780 | /* Refill the Rx ring buffers. */ | |
781 | for (; mdp->cur_rx - mdp->dirty_rx > 0; mdp->dirty_rx++) { | |
782 | entry = mdp->dirty_rx % RX_RING_SIZE; | |
783 | rxdesc = &mdp->rx_ring[entry]; | |
b0ca2a21 | 784 | /* The size of the buffer is 16 byte boundary. */ |
0029d64a | 785 | rxdesc->buffer_length = ALIGN(mdp->rx_buf_sz, 16); |
b0ca2a21 | 786 | |
86a74ff2 NI |
787 | if (mdp->rx_skbuff[entry] == NULL) { |
788 | skb = dev_alloc_skb(mdp->rx_buf_sz); | |
789 | mdp->rx_skbuff[entry] = skb; | |
790 | if (skb == NULL) | |
791 | break; /* Better luck next round. */ | |
e88aae7b YS |
792 | dma_map_single(&ndev->dev, skb->tail, mdp->rx_buf_sz, |
793 | DMA_FROM_DEVICE); | |
86a74ff2 | 794 | skb->dev = ndev; |
380af9e3 YS |
795 | sh_eth_set_receive_align(skb); |
796 | ||
bc8acf2c | 797 | skb_checksum_none_assert(skb); |
0029d64a | 798 | rxdesc->addr = virt_to_phys(PTR_ALIGN(skb->data, 4)); |
86a74ff2 | 799 | } |
86a74ff2 NI |
800 | if (entry >= RX_RING_SIZE - 1) |
801 | rxdesc->status |= | |
71557a37 | 802 | cpu_to_edmac(mdp, RD_RACT | RD_RFP | RD_RDEL); |
86a74ff2 NI |
803 | else |
804 | rxdesc->status |= | |
71557a37 | 805 | cpu_to_edmac(mdp, RD_RACT | RD_RFP); |
86a74ff2 NI |
806 | } |
807 | ||
808 | /* Restart Rx engine if stopped. */ | |
809 | /* If we don't need to check status, don't. -KDU */ | |
4a55530f YS |
810 | if (!(sh_eth_read(ndev, EDRRR) & EDRRR_R)) |
811 | sh_eth_write(ndev, EDRRR_R, EDRRR); | |
86a74ff2 NI |
812 | |
813 | return 0; | |
814 | } | |
815 | ||
4a55530f | 816 | static void sh_eth_rcv_snd_disable(struct net_device *ndev) |
dc19e4e5 NI |
817 | { |
818 | /* disable tx and rx */ | |
4a55530f YS |
819 | sh_eth_write(ndev, sh_eth_read(ndev, ECMR) & |
820 | ~(ECMR_RE | ECMR_TE), ECMR); | |
dc19e4e5 NI |
821 | } |
822 | ||
4a55530f | 823 | static void sh_eth_rcv_snd_enable(struct net_device *ndev) |
dc19e4e5 NI |
824 | { |
825 | /* enable tx and rx */ | |
4a55530f YS |
826 | sh_eth_write(ndev, sh_eth_read(ndev, ECMR) | |
827 | (ECMR_RE | ECMR_TE), ECMR); | |
dc19e4e5 NI |
828 | } |
829 | ||
86a74ff2 NI |
830 | /* error control function */ |
831 | static void sh_eth_error(struct net_device *ndev, int intr_status) | |
832 | { | |
833 | struct sh_eth_private *mdp = netdev_priv(ndev); | |
86a74ff2 | 834 | u32 felic_stat; |
380af9e3 YS |
835 | u32 link_stat; |
836 | u32 mask; | |
86a74ff2 NI |
837 | |
838 | if (intr_status & EESR_ECI) { | |
4a55530f YS |
839 | felic_stat = sh_eth_read(ndev, ECSR); |
840 | sh_eth_write(ndev, felic_stat, ECSR); /* clear int */ | |
86a74ff2 NI |
841 | if (felic_stat & ECSR_ICD) |
842 | mdp->stats.tx_carrier_errors++; | |
843 | if (felic_stat & ECSR_LCHNG) { | |
844 | /* Link Changed */ | |
4923576b | 845 | if (mdp->cd->no_psr || mdp->no_ether_link) { |
380af9e3 YS |
846 | if (mdp->link == PHY_DOWN) |
847 | link_stat = 0; | |
848 | else | |
849 | link_stat = PHY_ST_LINK; | |
850 | } else { | |
4a55530f | 851 | link_stat = (sh_eth_read(ndev, PSR)); |
4923576b YS |
852 | if (mdp->ether_link_active_low) |
853 | link_stat = ~link_stat; | |
380af9e3 | 854 | } |
dc19e4e5 | 855 | if (!(link_stat & PHY_ST_LINK)) |
4a55530f | 856 | sh_eth_rcv_snd_disable(ndev); |
dc19e4e5 | 857 | else { |
86a74ff2 | 858 | /* Link Up */ |
4a55530f YS |
859 | sh_eth_write(ndev, sh_eth_read(ndev, EESIPR) & |
860 | ~DMAC_M_ECI, EESIPR); | |
86a74ff2 | 861 | /*clear int */ |
4a55530f YS |
862 | sh_eth_write(ndev, sh_eth_read(ndev, ECSR), |
863 | ECSR); | |
864 | sh_eth_write(ndev, sh_eth_read(ndev, EESIPR) | | |
865 | DMAC_M_ECI, EESIPR); | |
86a74ff2 | 866 | /* enable tx and rx */ |
4a55530f | 867 | sh_eth_rcv_snd_enable(ndev); |
86a74ff2 NI |
868 | } |
869 | } | |
870 | } | |
871 | ||
872 | if (intr_status & EESR_TWB) { | |
873 | /* Write buck end. unused write back interrupt */ | |
874 | if (intr_status & EESR_TABT) /* Transmit Abort int */ | |
875 | mdp->stats.tx_aborted_errors++; | |
dc19e4e5 NI |
876 | if (netif_msg_tx_err(mdp)) |
877 | dev_err(&ndev->dev, "Transmit Abort\n"); | |
86a74ff2 NI |
878 | } |
879 | ||
880 | if (intr_status & EESR_RABT) { | |
881 | /* Receive Abort int */ | |
882 | if (intr_status & EESR_RFRMER) { | |
883 | /* Receive Frame Overflow int */ | |
884 | mdp->stats.rx_frame_errors++; | |
dc19e4e5 NI |
885 | if (netif_msg_rx_err(mdp)) |
886 | dev_err(&ndev->dev, "Receive Abort\n"); | |
86a74ff2 NI |
887 | } |
888 | } | |
380af9e3 | 889 | |
dc19e4e5 NI |
890 | if (intr_status & EESR_TDE) { |
891 | /* Transmit Descriptor Empty int */ | |
892 | mdp->stats.tx_fifo_errors++; | |
893 | if (netif_msg_tx_err(mdp)) | |
894 | dev_err(&ndev->dev, "Transmit Descriptor Empty\n"); | |
895 | } | |
896 | ||
897 | if (intr_status & EESR_TFE) { | |
898 | /* FIFO under flow */ | |
899 | mdp->stats.tx_fifo_errors++; | |
900 | if (netif_msg_tx_err(mdp)) | |
901 | dev_err(&ndev->dev, "Transmit FIFO Under flow\n"); | |
86a74ff2 NI |
902 | } |
903 | ||
904 | if (intr_status & EESR_RDE) { | |
905 | /* Receive Descriptor Empty int */ | |
906 | mdp->stats.rx_over_errors++; | |
907 | ||
4a55530f YS |
908 | if (sh_eth_read(ndev, EDRRR) ^ EDRRR_R) |
909 | sh_eth_write(ndev, EDRRR_R, EDRRR); | |
dc19e4e5 NI |
910 | if (netif_msg_rx_err(mdp)) |
911 | dev_err(&ndev->dev, "Receive Descriptor Empty\n"); | |
86a74ff2 | 912 | } |
dc19e4e5 | 913 | |
86a74ff2 NI |
914 | if (intr_status & EESR_RFE) { |
915 | /* Receive FIFO Overflow int */ | |
916 | mdp->stats.rx_fifo_errors++; | |
dc19e4e5 NI |
917 | if (netif_msg_rx_err(mdp)) |
918 | dev_err(&ndev->dev, "Receive FIFO Overflow\n"); | |
919 | } | |
920 | ||
921 | if (!mdp->cd->no_ade && (intr_status & EESR_ADE)) { | |
922 | /* Address Error */ | |
923 | mdp->stats.tx_fifo_errors++; | |
924 | if (netif_msg_tx_err(mdp)) | |
925 | dev_err(&ndev->dev, "Address Error\n"); | |
86a74ff2 | 926 | } |
380af9e3 YS |
927 | |
928 | mask = EESR_TWB | EESR_TABT | EESR_ADE | EESR_TDE | EESR_TFE; | |
929 | if (mdp->cd->no_ade) | |
930 | mask &= ~EESR_ADE; | |
931 | if (intr_status & mask) { | |
86a74ff2 | 932 | /* Tx error */ |
4a55530f | 933 | u32 edtrr = sh_eth_read(ndev, EDTRR); |
86a74ff2 | 934 | /* dmesg */ |
380af9e3 YS |
935 | dev_err(&ndev->dev, "TX error. status=%8.8x cur_tx=%8.8x ", |
936 | intr_status, mdp->cur_tx); | |
937 | dev_err(&ndev->dev, "dirty_tx=%8.8x state=%8.8x EDTRR=%8.8x.\n", | |
86a74ff2 NI |
938 | mdp->dirty_tx, (u32) ndev->state, edtrr); |
939 | /* dirty buffer free */ | |
940 | sh_eth_txfree(ndev); | |
941 | ||
942 | /* SH7712 BUG */ | |
943 | if (edtrr ^ EDTRR_TRNS) { | |
944 | /* tx dma start */ | |
4a55530f | 945 | sh_eth_write(ndev, EDTRR_TRNS, EDTRR); |
86a74ff2 NI |
946 | } |
947 | /* wakeup */ | |
948 | netif_wake_queue(ndev); | |
949 | } | |
950 | } | |
951 | ||
952 | static irqreturn_t sh_eth_interrupt(int irq, void *netdev) | |
953 | { | |
954 | struct net_device *ndev = netdev; | |
955 | struct sh_eth_private *mdp = netdev_priv(ndev); | |
380af9e3 | 956 | struct sh_eth_cpu_data *cd = mdp->cd; |
0e0fde3c | 957 | irqreturn_t ret = IRQ_NONE; |
4a55530f | 958 | u32 intr_status = 0; |
86a74ff2 | 959 | |
86a74ff2 NI |
960 | spin_lock(&mdp->lock); |
961 | ||
b0ca2a21 | 962 | /* Get interrpt stat */ |
4a55530f | 963 | intr_status = sh_eth_read(ndev, EESR); |
86a74ff2 | 964 | /* Clear interrupt */ |
0e0fde3c NI |
965 | if (intr_status & (EESR_FRC | EESR_RMAF | EESR_RRF | |
966 | EESR_RTLF | EESR_RTSF | EESR_PRE | EESR_CERF | | |
380af9e3 | 967 | cd->tx_check | cd->eesr_err_check)) { |
4a55530f | 968 | sh_eth_write(ndev, intr_status, EESR); |
0e0fde3c NI |
969 | ret = IRQ_HANDLED; |
970 | } else | |
971 | goto other_irq; | |
86a74ff2 | 972 | |
b0ca2a21 NI |
973 | if (intr_status & (EESR_FRC | /* Frame recv*/ |
974 | EESR_RMAF | /* Multi cast address recv*/ | |
975 | EESR_RRF | /* Bit frame recv */ | |
976 | EESR_RTLF | /* Long frame recv*/ | |
977 | EESR_RTSF | /* short frame recv */ | |
978 | EESR_PRE | /* PHY-LSI recv error */ | |
979 | EESR_CERF)){ /* recv frame CRC error */ | |
86a74ff2 | 980 | sh_eth_rx(ndev); |
b0ca2a21 | 981 | } |
86a74ff2 | 982 | |
b0ca2a21 | 983 | /* Tx Check */ |
380af9e3 | 984 | if (intr_status & cd->tx_check) { |
86a74ff2 NI |
985 | sh_eth_txfree(ndev); |
986 | netif_wake_queue(ndev); | |
987 | } | |
988 | ||
380af9e3 | 989 | if (intr_status & cd->eesr_err_check) |
86a74ff2 NI |
990 | sh_eth_error(ndev, intr_status); |
991 | ||
0e0fde3c | 992 | other_irq: |
86a74ff2 NI |
993 | spin_unlock(&mdp->lock); |
994 | ||
0e0fde3c | 995 | return ret; |
86a74ff2 NI |
996 | } |
997 | ||
998 | static void sh_eth_timer(unsigned long data) | |
999 | { | |
1000 | struct net_device *ndev = (struct net_device *)data; | |
1001 | struct sh_eth_private *mdp = netdev_priv(ndev); | |
1002 | ||
1003 | mod_timer(&mdp->timer, jiffies + (10 * HZ)); | |
1004 | } | |
1005 | ||
1006 | /* PHY state control function */ | |
1007 | static void sh_eth_adjust_link(struct net_device *ndev) | |
1008 | { | |
1009 | struct sh_eth_private *mdp = netdev_priv(ndev); | |
1010 | struct phy_device *phydev = mdp->phydev; | |
86a74ff2 NI |
1011 | int new_state = 0; |
1012 | ||
1013 | if (phydev->link != PHY_DOWN) { | |
1014 | if (phydev->duplex != mdp->duplex) { | |
1015 | new_state = 1; | |
1016 | mdp->duplex = phydev->duplex; | |
380af9e3 YS |
1017 | if (mdp->cd->set_duplex) |
1018 | mdp->cd->set_duplex(ndev); | |
86a74ff2 NI |
1019 | } |
1020 | ||
1021 | if (phydev->speed != mdp->speed) { | |
1022 | new_state = 1; | |
1023 | mdp->speed = phydev->speed; | |
380af9e3 YS |
1024 | if (mdp->cd->set_rate) |
1025 | mdp->cd->set_rate(ndev); | |
86a74ff2 NI |
1026 | } |
1027 | if (mdp->link == PHY_DOWN) { | |
4a55530f YS |
1028 | sh_eth_write(ndev, (sh_eth_read(ndev, ECMR) & ~ECMR_TXF) |
1029 | | ECMR_DM, ECMR); | |
86a74ff2 NI |
1030 | new_state = 1; |
1031 | mdp->link = phydev->link; | |
86a74ff2 NI |
1032 | } |
1033 | } else if (mdp->link) { | |
1034 | new_state = 1; | |
1035 | mdp->link = PHY_DOWN; | |
1036 | mdp->speed = 0; | |
1037 | mdp->duplex = -1; | |
86a74ff2 NI |
1038 | } |
1039 | ||
dc19e4e5 | 1040 | if (new_state && netif_msg_link(mdp)) |
86a74ff2 NI |
1041 | phy_print_status(phydev); |
1042 | } | |
1043 | ||
1044 | /* PHY init function */ | |
1045 | static int sh_eth_phy_init(struct net_device *ndev) | |
1046 | { | |
1047 | struct sh_eth_private *mdp = netdev_priv(ndev); | |
0a372eb9 | 1048 | char phy_id[MII_BUS_ID_SIZE + 3]; |
86a74ff2 NI |
1049 | struct phy_device *phydev = NULL; |
1050 | ||
fb28ad35 | 1051 | snprintf(phy_id, sizeof(phy_id), PHY_ID_FMT, |
86a74ff2 NI |
1052 | mdp->mii_bus->id , mdp->phy_id); |
1053 | ||
1054 | mdp->link = PHY_DOWN; | |
1055 | mdp->speed = 0; | |
1056 | mdp->duplex = -1; | |
1057 | ||
1058 | /* Try connect to PHY */ | |
c061b18d | 1059 | phydev = phy_connect(ndev, phy_id, sh_eth_adjust_link, |
86a74ff2 NI |
1060 | 0, PHY_INTERFACE_MODE_MII); |
1061 | if (IS_ERR(phydev)) { | |
1062 | dev_err(&ndev->dev, "phy_connect failed\n"); | |
1063 | return PTR_ERR(phydev); | |
1064 | } | |
380af9e3 | 1065 | |
86a74ff2 | 1066 | dev_info(&ndev->dev, "attached phy %i to driver %s\n", |
380af9e3 | 1067 | phydev->addr, phydev->drv->name); |
86a74ff2 NI |
1068 | |
1069 | mdp->phydev = phydev; | |
1070 | ||
1071 | return 0; | |
1072 | } | |
1073 | ||
1074 | /* PHY control start function */ | |
1075 | static int sh_eth_phy_start(struct net_device *ndev) | |
1076 | { | |
1077 | struct sh_eth_private *mdp = netdev_priv(ndev); | |
1078 | int ret; | |
1079 | ||
1080 | ret = sh_eth_phy_init(ndev); | |
1081 | if (ret) | |
1082 | return ret; | |
1083 | ||
1084 | /* reset phy - this also wakes it from PDOWN */ | |
1085 | phy_write(mdp->phydev, MII_BMCR, BMCR_RESET); | |
1086 | phy_start(mdp->phydev); | |
1087 | ||
1088 | return 0; | |
1089 | } | |
1090 | ||
dc19e4e5 NI |
1091 | static int sh_eth_get_settings(struct net_device *ndev, |
1092 | struct ethtool_cmd *ecmd) | |
1093 | { | |
1094 | struct sh_eth_private *mdp = netdev_priv(ndev); | |
1095 | unsigned long flags; | |
1096 | int ret; | |
1097 | ||
1098 | spin_lock_irqsave(&mdp->lock, flags); | |
1099 | ret = phy_ethtool_gset(mdp->phydev, ecmd); | |
1100 | spin_unlock_irqrestore(&mdp->lock, flags); | |
1101 | ||
1102 | return ret; | |
1103 | } | |
1104 | ||
1105 | static int sh_eth_set_settings(struct net_device *ndev, | |
1106 | struct ethtool_cmd *ecmd) | |
1107 | { | |
1108 | struct sh_eth_private *mdp = netdev_priv(ndev); | |
1109 | unsigned long flags; | |
1110 | int ret; | |
dc19e4e5 NI |
1111 | |
1112 | spin_lock_irqsave(&mdp->lock, flags); | |
1113 | ||
1114 | /* disable tx and rx */ | |
4a55530f | 1115 | sh_eth_rcv_snd_disable(ndev); |
dc19e4e5 NI |
1116 | |
1117 | ret = phy_ethtool_sset(mdp->phydev, ecmd); | |
1118 | if (ret) | |
1119 | goto error_exit; | |
1120 | ||
1121 | if (ecmd->duplex == DUPLEX_FULL) | |
1122 | mdp->duplex = 1; | |
1123 | else | |
1124 | mdp->duplex = 0; | |
1125 | ||
1126 | if (mdp->cd->set_duplex) | |
1127 | mdp->cd->set_duplex(ndev); | |
1128 | ||
1129 | error_exit: | |
1130 | mdelay(1); | |
1131 | ||
1132 | /* enable tx and rx */ | |
4a55530f | 1133 | sh_eth_rcv_snd_enable(ndev); |
dc19e4e5 NI |
1134 | |
1135 | spin_unlock_irqrestore(&mdp->lock, flags); | |
1136 | ||
1137 | return ret; | |
1138 | } | |
1139 | ||
1140 | static int sh_eth_nway_reset(struct net_device *ndev) | |
1141 | { | |
1142 | struct sh_eth_private *mdp = netdev_priv(ndev); | |
1143 | unsigned long flags; | |
1144 | int ret; | |
1145 | ||
1146 | spin_lock_irqsave(&mdp->lock, flags); | |
1147 | ret = phy_start_aneg(mdp->phydev); | |
1148 | spin_unlock_irqrestore(&mdp->lock, flags); | |
1149 | ||
1150 | return ret; | |
1151 | } | |
1152 | ||
1153 | static u32 sh_eth_get_msglevel(struct net_device *ndev) | |
1154 | { | |
1155 | struct sh_eth_private *mdp = netdev_priv(ndev); | |
1156 | return mdp->msg_enable; | |
1157 | } | |
1158 | ||
1159 | static void sh_eth_set_msglevel(struct net_device *ndev, u32 value) | |
1160 | { | |
1161 | struct sh_eth_private *mdp = netdev_priv(ndev); | |
1162 | mdp->msg_enable = value; | |
1163 | } | |
1164 | ||
1165 | static const char sh_eth_gstrings_stats[][ETH_GSTRING_LEN] = { | |
1166 | "rx_current", "tx_current", | |
1167 | "rx_dirty", "tx_dirty", | |
1168 | }; | |
1169 | #define SH_ETH_STATS_LEN ARRAY_SIZE(sh_eth_gstrings_stats) | |
1170 | ||
1171 | static int sh_eth_get_sset_count(struct net_device *netdev, int sset) | |
1172 | { | |
1173 | switch (sset) { | |
1174 | case ETH_SS_STATS: | |
1175 | return SH_ETH_STATS_LEN; | |
1176 | default: | |
1177 | return -EOPNOTSUPP; | |
1178 | } | |
1179 | } | |
1180 | ||
1181 | static void sh_eth_get_ethtool_stats(struct net_device *ndev, | |
1182 | struct ethtool_stats *stats, u64 *data) | |
1183 | { | |
1184 | struct sh_eth_private *mdp = netdev_priv(ndev); | |
1185 | int i = 0; | |
1186 | ||
1187 | /* device-specific stats */ | |
1188 | data[i++] = mdp->cur_rx; | |
1189 | data[i++] = mdp->cur_tx; | |
1190 | data[i++] = mdp->dirty_rx; | |
1191 | data[i++] = mdp->dirty_tx; | |
1192 | } | |
1193 | ||
1194 | static void sh_eth_get_strings(struct net_device *ndev, u32 stringset, u8 *data) | |
1195 | { | |
1196 | switch (stringset) { | |
1197 | case ETH_SS_STATS: | |
1198 | memcpy(data, *sh_eth_gstrings_stats, | |
1199 | sizeof(sh_eth_gstrings_stats)); | |
1200 | break; | |
1201 | } | |
1202 | } | |
1203 | ||
1204 | static struct ethtool_ops sh_eth_ethtool_ops = { | |
1205 | .get_settings = sh_eth_get_settings, | |
1206 | .set_settings = sh_eth_set_settings, | |
1207 | .nway_reset = sh_eth_nway_reset, | |
1208 | .get_msglevel = sh_eth_get_msglevel, | |
1209 | .set_msglevel = sh_eth_set_msglevel, | |
1210 | .get_link = ethtool_op_get_link, | |
1211 | .get_strings = sh_eth_get_strings, | |
1212 | .get_ethtool_stats = sh_eth_get_ethtool_stats, | |
1213 | .get_sset_count = sh_eth_get_sset_count, | |
1214 | }; | |
1215 | ||
86a74ff2 NI |
1216 | /* network device open function */ |
1217 | static int sh_eth_open(struct net_device *ndev) | |
1218 | { | |
1219 | int ret = 0; | |
1220 | struct sh_eth_private *mdp = netdev_priv(ndev); | |
1221 | ||
bcd5149d MD |
1222 | pm_runtime_get_sync(&mdp->pdev->dev); |
1223 | ||
a0607fd3 | 1224 | ret = request_irq(ndev->irq, sh_eth_interrupt, |
f29a3d04 | 1225 | #if defined(CONFIG_CPU_SUBTYPE_SH7763) || \ |
dc19e4e5 NI |
1226 | defined(CONFIG_CPU_SUBTYPE_SH7764) || \ |
1227 | defined(CONFIG_CPU_SUBTYPE_SH7757) | |
0e0fde3c NI |
1228 | IRQF_SHARED, |
1229 | #else | |
1230 | 0, | |
1231 | #endif | |
1232 | ndev->name, ndev); | |
86a74ff2 | 1233 | if (ret) { |
380af9e3 | 1234 | dev_err(&ndev->dev, "Can not assign IRQ number\n"); |
86a74ff2 NI |
1235 | return ret; |
1236 | } | |
1237 | ||
1238 | /* Descriptor set */ | |
1239 | ret = sh_eth_ring_init(ndev); | |
1240 | if (ret) | |
1241 | goto out_free_irq; | |
1242 | ||
1243 | /* device init */ | |
1244 | ret = sh_eth_dev_init(ndev); | |
1245 | if (ret) | |
1246 | goto out_free_irq; | |
1247 | ||
1248 | /* PHY control start*/ | |
1249 | ret = sh_eth_phy_start(ndev); | |
1250 | if (ret) | |
1251 | goto out_free_irq; | |
1252 | ||
1253 | /* Set the timer to check for link beat. */ | |
1254 | init_timer(&mdp->timer); | |
1255 | mdp->timer.expires = (jiffies + (24 * HZ)) / 10;/* 2.4 sec. */ | |
b0ca2a21 | 1256 | setup_timer(&mdp->timer, sh_eth_timer, (unsigned long)ndev); |
86a74ff2 NI |
1257 | |
1258 | return ret; | |
1259 | ||
1260 | out_free_irq: | |
1261 | free_irq(ndev->irq, ndev); | |
bcd5149d | 1262 | pm_runtime_put_sync(&mdp->pdev->dev); |
86a74ff2 NI |
1263 | return ret; |
1264 | } | |
1265 | ||
1266 | /* Timeout function */ | |
1267 | static void sh_eth_tx_timeout(struct net_device *ndev) | |
1268 | { | |
1269 | struct sh_eth_private *mdp = netdev_priv(ndev); | |
86a74ff2 NI |
1270 | struct sh_eth_rxdesc *rxdesc; |
1271 | int i; | |
1272 | ||
1273 | netif_stop_queue(ndev); | |
1274 | ||
dc19e4e5 NI |
1275 | if (netif_msg_timer(mdp)) |
1276 | dev_err(&ndev->dev, "%s: transmit timed out, status %8.8x," | |
4a55530f | 1277 | " resetting...\n", ndev->name, (int)sh_eth_read(ndev, EESR)); |
86a74ff2 NI |
1278 | |
1279 | /* tx_errors count up */ | |
1280 | mdp->stats.tx_errors++; | |
1281 | ||
1282 | /* timer off */ | |
1283 | del_timer_sync(&mdp->timer); | |
1284 | ||
1285 | /* Free all the skbuffs in the Rx queue. */ | |
1286 | for (i = 0; i < RX_RING_SIZE; i++) { | |
1287 | rxdesc = &mdp->rx_ring[i]; | |
1288 | rxdesc->status = 0; | |
1289 | rxdesc->addr = 0xBADF00D0; | |
1290 | if (mdp->rx_skbuff[i]) | |
1291 | dev_kfree_skb(mdp->rx_skbuff[i]); | |
1292 | mdp->rx_skbuff[i] = NULL; | |
1293 | } | |
1294 | for (i = 0; i < TX_RING_SIZE; i++) { | |
1295 | if (mdp->tx_skbuff[i]) | |
1296 | dev_kfree_skb(mdp->tx_skbuff[i]); | |
1297 | mdp->tx_skbuff[i] = NULL; | |
1298 | } | |
1299 | ||
1300 | /* device init */ | |
1301 | sh_eth_dev_init(ndev); | |
1302 | ||
1303 | /* timer on */ | |
1304 | mdp->timer.expires = (jiffies + (24 * HZ)) / 10;/* 2.4 sec. */ | |
1305 | add_timer(&mdp->timer); | |
1306 | } | |
1307 | ||
1308 | /* Packet transmit function */ | |
1309 | static int sh_eth_start_xmit(struct sk_buff *skb, struct net_device *ndev) | |
1310 | { | |
1311 | struct sh_eth_private *mdp = netdev_priv(ndev); | |
1312 | struct sh_eth_txdesc *txdesc; | |
1313 | u32 entry; | |
fb5e2f9b | 1314 | unsigned long flags; |
86a74ff2 NI |
1315 | |
1316 | spin_lock_irqsave(&mdp->lock, flags); | |
1317 | if ((mdp->cur_tx - mdp->dirty_tx) >= (TX_RING_SIZE - 4)) { | |
1318 | if (!sh_eth_txfree(ndev)) { | |
dc19e4e5 NI |
1319 | if (netif_msg_tx_queued(mdp)) |
1320 | dev_warn(&ndev->dev, "TxFD exhausted.\n"); | |
86a74ff2 NI |
1321 | netif_stop_queue(ndev); |
1322 | spin_unlock_irqrestore(&mdp->lock, flags); | |
5b548140 | 1323 | return NETDEV_TX_BUSY; |
86a74ff2 NI |
1324 | } |
1325 | } | |
1326 | spin_unlock_irqrestore(&mdp->lock, flags); | |
1327 | ||
1328 | entry = mdp->cur_tx % TX_RING_SIZE; | |
1329 | mdp->tx_skbuff[entry] = skb; | |
1330 | txdesc = &mdp->tx_ring[entry]; | |
0029d64a | 1331 | txdesc->addr = virt_to_phys(skb->data); |
86a74ff2 | 1332 | /* soft swap. */ |
380af9e3 YS |
1333 | if (!mdp->cd->hw_swap) |
1334 | sh_eth_soft_swap(phys_to_virt(ALIGN(txdesc->addr, 4)), | |
1335 | skb->len + 2); | |
86a74ff2 NI |
1336 | /* write back */ |
1337 | __flush_purge_region(skb->data, skb->len); | |
1338 | if (skb->len < ETHERSMALL) | |
1339 | txdesc->buffer_length = ETHERSMALL; | |
1340 | else | |
1341 | txdesc->buffer_length = skb->len; | |
1342 | ||
1343 | if (entry >= TX_RING_SIZE - 1) | |
71557a37 | 1344 | txdesc->status |= cpu_to_edmac(mdp, TD_TACT | TD_TDLE); |
86a74ff2 | 1345 | else |
71557a37 | 1346 | txdesc->status |= cpu_to_edmac(mdp, TD_TACT); |
86a74ff2 NI |
1347 | |
1348 | mdp->cur_tx++; | |
1349 | ||
4a55530f YS |
1350 | if (!(sh_eth_read(ndev, EDTRR) & EDTRR_TRNS)) |
1351 | sh_eth_write(ndev, EDTRR_TRNS, EDTRR); | |
b0ca2a21 | 1352 | |
6ed10654 | 1353 | return NETDEV_TX_OK; |
86a74ff2 NI |
1354 | } |
1355 | ||
1356 | /* device close function */ | |
1357 | static int sh_eth_close(struct net_device *ndev) | |
1358 | { | |
1359 | struct sh_eth_private *mdp = netdev_priv(ndev); | |
86a74ff2 NI |
1360 | int ringsize; |
1361 | ||
1362 | netif_stop_queue(ndev); | |
1363 | ||
1364 | /* Disable interrupts by clearing the interrupt mask. */ | |
4a55530f | 1365 | sh_eth_write(ndev, 0x0000, EESIPR); |
86a74ff2 NI |
1366 | |
1367 | /* Stop the chip's Tx and Rx processes. */ | |
4a55530f YS |
1368 | sh_eth_write(ndev, 0, EDTRR); |
1369 | sh_eth_write(ndev, 0, EDRRR); | |
86a74ff2 NI |
1370 | |
1371 | /* PHY Disconnect */ | |
1372 | if (mdp->phydev) { | |
1373 | phy_stop(mdp->phydev); | |
1374 | phy_disconnect(mdp->phydev); | |
1375 | } | |
1376 | ||
1377 | free_irq(ndev->irq, ndev); | |
1378 | ||
1379 | del_timer_sync(&mdp->timer); | |
1380 | ||
1381 | /* Free all the skbuffs in the Rx queue. */ | |
1382 | sh_eth_ring_free(ndev); | |
1383 | ||
1384 | /* free DMA buffer */ | |
1385 | ringsize = sizeof(struct sh_eth_rxdesc) * RX_RING_SIZE; | |
1386 | dma_free_coherent(NULL, ringsize, mdp->rx_ring, mdp->rx_desc_dma); | |
1387 | ||
1388 | /* free DMA buffer */ | |
1389 | ringsize = sizeof(struct sh_eth_txdesc) * TX_RING_SIZE; | |
1390 | dma_free_coherent(NULL, ringsize, mdp->tx_ring, mdp->tx_desc_dma); | |
1391 | ||
bcd5149d MD |
1392 | pm_runtime_put_sync(&mdp->pdev->dev); |
1393 | ||
86a74ff2 NI |
1394 | return 0; |
1395 | } | |
1396 | ||
1397 | static struct net_device_stats *sh_eth_get_stats(struct net_device *ndev) | |
1398 | { | |
1399 | struct sh_eth_private *mdp = netdev_priv(ndev); | |
86a74ff2 | 1400 | |
bcd5149d MD |
1401 | pm_runtime_get_sync(&mdp->pdev->dev); |
1402 | ||
4a55530f YS |
1403 | mdp->stats.tx_dropped += sh_eth_read(ndev, TROCR); |
1404 | sh_eth_write(ndev, 0, TROCR); /* (write clear) */ | |
1405 | mdp->stats.collisions += sh_eth_read(ndev, CDCR); | |
1406 | sh_eth_write(ndev, 0, CDCR); /* (write clear) */ | |
1407 | mdp->stats.tx_carrier_errors += sh_eth_read(ndev, LCCR); | |
1408 | sh_eth_write(ndev, 0, LCCR); /* (write clear) */ | |
b0ca2a21 | 1409 | #if defined(CONFIG_CPU_SUBTYPE_SH7763) |
4a55530f YS |
1410 | mdp->stats.tx_carrier_errors += sh_eth_read(ndev, CERCR);/* CERCR */ |
1411 | sh_eth_write(ndev, 0, CERCR); /* (write clear) */ | |
1412 | mdp->stats.tx_carrier_errors += sh_eth_read(ndev, CEECR);/* CEECR */ | |
1413 | sh_eth_write(ndev, 0, CEECR); /* (write clear) */ | |
b0ca2a21 | 1414 | #else |
4a55530f YS |
1415 | mdp->stats.tx_carrier_errors += sh_eth_read(ndev, CNDCR); |
1416 | sh_eth_write(ndev, 0, CNDCR); /* (write clear) */ | |
b0ca2a21 | 1417 | #endif |
bcd5149d MD |
1418 | pm_runtime_put_sync(&mdp->pdev->dev); |
1419 | ||
86a74ff2 NI |
1420 | return &mdp->stats; |
1421 | } | |
1422 | ||
1423 | /* ioctl to device funciotn*/ | |
1424 | static int sh_eth_do_ioctl(struct net_device *ndev, struct ifreq *rq, | |
1425 | int cmd) | |
1426 | { | |
1427 | struct sh_eth_private *mdp = netdev_priv(ndev); | |
1428 | struct phy_device *phydev = mdp->phydev; | |
1429 | ||
1430 | if (!netif_running(ndev)) | |
1431 | return -EINVAL; | |
1432 | ||
1433 | if (!phydev) | |
1434 | return -ENODEV; | |
1435 | ||
28b04113 | 1436 | return phy_mii_ioctl(phydev, rq, cmd); |
86a74ff2 NI |
1437 | } |
1438 | ||
380af9e3 | 1439 | #if defined(SH_ETH_HAS_TSU) |
86a74ff2 NI |
1440 | /* Multicast reception directions set */ |
1441 | static void sh_eth_set_multicast_list(struct net_device *ndev) | |
1442 | { | |
86a74ff2 NI |
1443 | if (ndev->flags & IFF_PROMISC) { |
1444 | /* Set promiscuous. */ | |
4a55530f YS |
1445 | sh_eth_write(ndev, (sh_eth_read(ndev, ECMR) & ~ECMR_MCT) | |
1446 | ECMR_PRM, ECMR); | |
86a74ff2 NI |
1447 | } else { |
1448 | /* Normal, unicast/broadcast-only mode. */ | |
4a55530f YS |
1449 | sh_eth_write(ndev, (sh_eth_read(ndev, ECMR) & ~ECMR_PRM) | |
1450 | ECMR_MCT, ECMR); | |
86a74ff2 NI |
1451 | } |
1452 | } | |
4986b996 | 1453 | #endif /* SH_ETH_HAS_TSU */ |
86a74ff2 NI |
1454 | |
1455 | /* SuperH's TSU register init function */ | |
4a55530f | 1456 | static void sh_eth_tsu_init(struct sh_eth_private *mdp) |
86a74ff2 | 1457 | { |
4a55530f YS |
1458 | sh_eth_tsu_write(mdp, 0, TSU_FWEN0); /* Disable forward(0->1) */ |
1459 | sh_eth_tsu_write(mdp, 0, TSU_FWEN1); /* Disable forward(1->0) */ | |
1460 | sh_eth_tsu_write(mdp, 0, TSU_FCM); /* forward fifo 3k-3k */ | |
1461 | sh_eth_tsu_write(mdp, 0xc, TSU_BSYSL0); | |
1462 | sh_eth_tsu_write(mdp, 0xc, TSU_BSYSL1); | |
1463 | sh_eth_tsu_write(mdp, 0, TSU_PRISL0); | |
1464 | sh_eth_tsu_write(mdp, 0, TSU_PRISL1); | |
1465 | sh_eth_tsu_write(mdp, 0, TSU_FWSL0); | |
1466 | sh_eth_tsu_write(mdp, 0, TSU_FWSL1); | |
1467 | sh_eth_tsu_write(mdp, TSU_FWSLC_POSTENU | TSU_FWSLC_POSTENL, TSU_FWSLC); | |
b0ca2a21 | 1468 | #if defined(CONFIG_CPU_SUBTYPE_SH7763) |
4a55530f YS |
1469 | sh_eth_tsu_write(mdp, 0, TSU_QTAG0); /* Disable QTAG(0->1) */ |
1470 | sh_eth_tsu_write(mdp, 0, TSU_QTAG1); /* Disable QTAG(1->0) */ | |
b0ca2a21 | 1471 | #else |
4a55530f YS |
1472 | sh_eth_tsu_write(mdp, 0, TSU_QTAGM0); /* Disable QTAG(0->1) */ |
1473 | sh_eth_tsu_write(mdp, 0, TSU_QTAGM1); /* Disable QTAG(1->0) */ | |
b0ca2a21 | 1474 | #endif |
4a55530f YS |
1475 | sh_eth_tsu_write(mdp, 0, TSU_FWSR); /* all interrupt status clear */ |
1476 | sh_eth_tsu_write(mdp, 0, TSU_FWINMK); /* Disable all interrupt */ | |
1477 | sh_eth_tsu_write(mdp, 0, TSU_TEN); /* Disable all CAM entry */ | |
1478 | sh_eth_tsu_write(mdp, 0, TSU_POST1); /* Disable CAM entry [ 0- 7] */ | |
1479 | sh_eth_tsu_write(mdp, 0, TSU_POST2); /* Disable CAM entry [ 8-15] */ | |
1480 | sh_eth_tsu_write(mdp, 0, TSU_POST3); /* Disable CAM entry [16-23] */ | |
1481 | sh_eth_tsu_write(mdp, 0, TSU_POST4); /* Disable CAM entry [24-31] */ | |
86a74ff2 NI |
1482 | } |
1483 | ||
1484 | /* MDIO bus release function */ | |
1485 | static int sh_mdio_release(struct net_device *ndev) | |
1486 | { | |
1487 | struct mii_bus *bus = dev_get_drvdata(&ndev->dev); | |
1488 | ||
1489 | /* unregister mdio bus */ | |
1490 | mdiobus_unregister(bus); | |
1491 | ||
1492 | /* remove mdio bus info from net_device */ | |
1493 | dev_set_drvdata(&ndev->dev, NULL); | |
1494 | ||
0f0b405c DK |
1495 | /* free interrupts memory */ |
1496 | kfree(bus->irq); | |
1497 | ||
86a74ff2 NI |
1498 | /* free bitbang info */ |
1499 | free_mdio_bitbang(bus); | |
1500 | ||
1501 | return 0; | |
1502 | } | |
1503 | ||
1504 | /* MDIO bus init function */ | |
1505 | static int sh_mdio_init(struct net_device *ndev, int id) | |
1506 | { | |
1507 | int ret, i; | |
1508 | struct bb_info *bitbang; | |
1509 | struct sh_eth_private *mdp = netdev_priv(ndev); | |
1510 | ||
1511 | /* create bit control struct for PHY */ | |
1512 | bitbang = kzalloc(sizeof(struct bb_info), GFP_KERNEL); | |
1513 | if (!bitbang) { | |
1514 | ret = -ENOMEM; | |
1515 | goto out; | |
1516 | } | |
1517 | ||
1518 | /* bitbang init */ | |
4a55530f | 1519 | bitbang->addr = ndev->base_addr + mdp->reg_offset[PIR]; |
86a74ff2 NI |
1520 | bitbang->mdi_msk = 0x08; |
1521 | bitbang->mdo_msk = 0x04; | |
1522 | bitbang->mmd_msk = 0x02;/* MMD */ | |
1523 | bitbang->mdc_msk = 0x01; | |
1524 | bitbang->ctrl.ops = &bb_ops; | |
1525 | ||
c2e07b3a | 1526 | /* MII controller setting */ |
86a74ff2 NI |
1527 | mdp->mii_bus = alloc_mdio_bitbang(&bitbang->ctrl); |
1528 | if (!mdp->mii_bus) { | |
1529 | ret = -ENOMEM; | |
1530 | goto out_free_bitbang; | |
1531 | } | |
1532 | ||
1533 | /* Hook up MII support for ethtool */ | |
1534 | mdp->mii_bus->name = "sh_mii"; | |
18ee49dd | 1535 | mdp->mii_bus->parent = &ndev->dev; |
fb5e2f9b | 1536 | snprintf(mdp->mii_bus->id, MII_BUS_ID_SIZE, "%x", id); |
86a74ff2 NI |
1537 | |
1538 | /* PHY IRQ */ | |
1539 | mdp->mii_bus->irq = kmalloc(sizeof(int)*PHY_MAX_ADDR, GFP_KERNEL); | |
1540 | if (!mdp->mii_bus->irq) { | |
1541 | ret = -ENOMEM; | |
1542 | goto out_free_bus; | |
1543 | } | |
1544 | ||
1545 | for (i = 0; i < PHY_MAX_ADDR; i++) | |
1546 | mdp->mii_bus->irq[i] = PHY_POLL; | |
1547 | ||
1548 | /* regist mdio bus */ | |
1549 | ret = mdiobus_register(mdp->mii_bus); | |
1550 | if (ret) | |
1551 | goto out_free_irq; | |
1552 | ||
1553 | dev_set_drvdata(&ndev->dev, mdp->mii_bus); | |
1554 | ||
1555 | return 0; | |
1556 | ||
1557 | out_free_irq: | |
1558 | kfree(mdp->mii_bus->irq); | |
1559 | ||
1560 | out_free_bus: | |
298cf9be | 1561 | free_mdio_bitbang(mdp->mii_bus); |
86a74ff2 NI |
1562 | |
1563 | out_free_bitbang: | |
1564 | kfree(bitbang); | |
1565 | ||
1566 | out: | |
1567 | return ret; | |
1568 | } | |
1569 | ||
4a55530f YS |
1570 | static const u16 *sh_eth_get_register_offset(int register_type) |
1571 | { | |
1572 | const u16 *reg_offset = NULL; | |
1573 | ||
1574 | switch (register_type) { | |
1575 | case SH_ETH_REG_GIGABIT: | |
1576 | reg_offset = sh_eth_offset_gigabit; | |
1577 | break; | |
1578 | case SH_ETH_REG_FAST_SH4: | |
1579 | reg_offset = sh_eth_offset_fast_sh4; | |
1580 | break; | |
1581 | case SH_ETH_REG_FAST_SH3_SH2: | |
1582 | reg_offset = sh_eth_offset_fast_sh3_sh2; | |
1583 | break; | |
1584 | default: | |
1585 | printk(KERN_ERR "Unknown register type (%d)\n", register_type); | |
1586 | break; | |
1587 | } | |
1588 | ||
1589 | return reg_offset; | |
1590 | } | |
1591 | ||
ebf84eaa AB |
1592 | static const struct net_device_ops sh_eth_netdev_ops = { |
1593 | .ndo_open = sh_eth_open, | |
1594 | .ndo_stop = sh_eth_close, | |
1595 | .ndo_start_xmit = sh_eth_start_xmit, | |
1596 | .ndo_get_stats = sh_eth_get_stats, | |
380af9e3 | 1597 | #if defined(SH_ETH_HAS_TSU) |
ebf84eaa | 1598 | .ndo_set_multicast_list = sh_eth_set_multicast_list, |
380af9e3 | 1599 | #endif |
ebf84eaa AB |
1600 | .ndo_tx_timeout = sh_eth_tx_timeout, |
1601 | .ndo_do_ioctl = sh_eth_do_ioctl, | |
1602 | .ndo_validate_addr = eth_validate_addr, | |
1603 | .ndo_set_mac_address = eth_mac_addr, | |
1604 | .ndo_change_mtu = eth_change_mtu, | |
1605 | }; | |
1606 | ||
86a74ff2 NI |
1607 | static int sh_eth_drv_probe(struct platform_device *pdev) |
1608 | { | |
9c38657c | 1609 | int ret, devno = 0; |
86a74ff2 NI |
1610 | struct resource *res; |
1611 | struct net_device *ndev = NULL; | |
1612 | struct sh_eth_private *mdp; | |
71557a37 | 1613 | struct sh_eth_plat_data *pd; |
86a74ff2 NI |
1614 | |
1615 | /* get base addr */ | |
1616 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
1617 | if (unlikely(res == NULL)) { | |
1618 | dev_err(&pdev->dev, "invalid resource\n"); | |
1619 | ret = -EINVAL; | |
1620 | goto out; | |
1621 | } | |
1622 | ||
1623 | ndev = alloc_etherdev(sizeof(struct sh_eth_private)); | |
1624 | if (!ndev) { | |
380af9e3 | 1625 | dev_err(&pdev->dev, "Could not allocate device.\n"); |
86a74ff2 NI |
1626 | ret = -ENOMEM; |
1627 | goto out; | |
1628 | } | |
1629 | ||
1630 | /* The sh Ether-specific entries in the device structure. */ | |
1631 | ndev->base_addr = res->start; | |
1632 | devno = pdev->id; | |
1633 | if (devno < 0) | |
1634 | devno = 0; | |
1635 | ||
1636 | ndev->dma = -1; | |
cc3c080d | 1637 | ret = platform_get_irq(pdev, 0); |
1638 | if (ret < 0) { | |
86a74ff2 NI |
1639 | ret = -ENODEV; |
1640 | goto out_release; | |
1641 | } | |
cc3c080d | 1642 | ndev->irq = ret; |
86a74ff2 NI |
1643 | |
1644 | SET_NETDEV_DEV(ndev, &pdev->dev); | |
1645 | ||
1646 | /* Fill in the fields of the device structure with ethernet values. */ | |
1647 | ether_setup(ndev); | |
1648 | ||
1649 | mdp = netdev_priv(ndev); | |
1650 | spin_lock_init(&mdp->lock); | |
bcd5149d MD |
1651 | mdp->pdev = pdev; |
1652 | pm_runtime_enable(&pdev->dev); | |
1653 | pm_runtime_resume(&pdev->dev); | |
86a74ff2 | 1654 | |
71557a37 | 1655 | pd = (struct sh_eth_plat_data *)(pdev->dev.platform_data); |
86a74ff2 | 1656 | /* get PHY ID */ |
71557a37 YS |
1657 | mdp->phy_id = pd->phy; |
1658 | /* EDMAC endian */ | |
1659 | mdp->edmac_endian = pd->edmac_endian; | |
4923576b YS |
1660 | mdp->no_ether_link = pd->no_ether_link; |
1661 | mdp->ether_link_active_low = pd->ether_link_active_low; | |
4a55530f | 1662 | mdp->reg_offset = sh_eth_get_register_offset(pd->register_type); |
86a74ff2 | 1663 | |
380af9e3 YS |
1664 | /* set cpu data */ |
1665 | mdp->cd = &sh_eth_my_cpu_data; | |
1666 | sh_eth_set_default_cpu_data(mdp->cd); | |
1667 | ||
86a74ff2 | 1668 | /* set function */ |
ebf84eaa | 1669 | ndev->netdev_ops = &sh_eth_netdev_ops; |
dc19e4e5 | 1670 | SET_ETHTOOL_OPS(ndev, &sh_eth_ethtool_ops); |
86a74ff2 NI |
1671 | ndev->watchdog_timeo = TX_TIMEOUT; |
1672 | ||
dc19e4e5 NI |
1673 | /* debug message level */ |
1674 | mdp->msg_enable = SH_ETH_DEF_MSG_ENABLE; | |
86a74ff2 NI |
1675 | mdp->post_rx = POST_RX >> (devno << 1); |
1676 | mdp->post_fw = POST_FW >> (devno << 1); | |
1677 | ||
1678 | /* read and set MAC address */ | |
748031f9 | 1679 | read_mac_address(ndev, pd->mac_addr); |
86a74ff2 NI |
1680 | |
1681 | /* First device only init */ | |
1682 | if (!devno) { | |
4986b996 YS |
1683 | if (mdp->cd->tsu) { |
1684 | struct resource *rtsu; | |
1685 | rtsu = platform_get_resource(pdev, IORESOURCE_MEM, 1); | |
1686 | if (!rtsu) { | |
1687 | dev_err(&pdev->dev, "Not found TSU resource\n"); | |
1688 | goto out_release; | |
1689 | } | |
1690 | mdp->tsu_addr = ioremap(rtsu->start, | |
1691 | resource_size(rtsu)); | |
1692 | } | |
380af9e3 YS |
1693 | if (mdp->cd->chip_reset) |
1694 | mdp->cd->chip_reset(ndev); | |
86a74ff2 | 1695 | |
4986b996 YS |
1696 | if (mdp->cd->tsu) { |
1697 | /* TSU init (Init only)*/ | |
1698 | sh_eth_tsu_init(mdp); | |
1699 | } | |
86a74ff2 NI |
1700 | } |
1701 | ||
1702 | /* network device register */ | |
1703 | ret = register_netdev(ndev); | |
1704 | if (ret) | |
1705 | goto out_release; | |
1706 | ||
1707 | /* mdio bus init */ | |
1708 | ret = sh_mdio_init(ndev, pdev->id); | |
1709 | if (ret) | |
1710 | goto out_unregister; | |
1711 | ||
6cd9b49d HS |
1712 | /* print device infomation */ |
1713 | pr_info("Base address at 0x%x, %pM, IRQ %d.\n", | |
1714 | (u32)ndev->base_addr, ndev->dev_addr, ndev->irq); | |
86a74ff2 NI |
1715 | |
1716 | platform_set_drvdata(pdev, ndev); | |
1717 | ||
1718 | return ret; | |
1719 | ||
1720 | out_unregister: | |
1721 | unregister_netdev(ndev); | |
1722 | ||
1723 | out_release: | |
1724 | /* net_dev free */ | |
4986b996 YS |
1725 | if (mdp->tsu_addr) |
1726 | iounmap(mdp->tsu_addr); | |
86a74ff2 NI |
1727 | if (ndev) |
1728 | free_netdev(ndev); | |
1729 | ||
1730 | out: | |
1731 | return ret; | |
1732 | } | |
1733 | ||
1734 | static int sh_eth_drv_remove(struct platform_device *pdev) | |
1735 | { | |
1736 | struct net_device *ndev = platform_get_drvdata(pdev); | |
4986b996 | 1737 | struct sh_eth_private *mdp = netdev_priv(ndev); |
86a74ff2 | 1738 | |
4986b996 | 1739 | iounmap(mdp->tsu_addr); |
86a74ff2 NI |
1740 | sh_mdio_release(ndev); |
1741 | unregister_netdev(ndev); | |
bcd5149d | 1742 | pm_runtime_disable(&pdev->dev); |
86a74ff2 NI |
1743 | free_netdev(ndev); |
1744 | platform_set_drvdata(pdev, NULL); | |
1745 | ||
1746 | return 0; | |
1747 | } | |
1748 | ||
bcd5149d MD |
1749 | static int sh_eth_runtime_nop(struct device *dev) |
1750 | { | |
1751 | /* | |
1752 | * Runtime PM callback shared between ->runtime_suspend() | |
1753 | * and ->runtime_resume(). Simply returns success. | |
1754 | * | |
1755 | * This driver re-initializes all registers after | |
1756 | * pm_runtime_get_sync() anyway so there is no need | |
1757 | * to save and restore registers here. | |
1758 | */ | |
1759 | return 0; | |
1760 | } | |
1761 | ||
1762 | static struct dev_pm_ops sh_eth_dev_pm_ops = { | |
1763 | .runtime_suspend = sh_eth_runtime_nop, | |
1764 | .runtime_resume = sh_eth_runtime_nop, | |
1765 | }; | |
1766 | ||
86a74ff2 NI |
1767 | static struct platform_driver sh_eth_driver = { |
1768 | .probe = sh_eth_drv_probe, | |
1769 | .remove = sh_eth_drv_remove, | |
1770 | .driver = { | |
1771 | .name = CARDNAME, | |
bcd5149d | 1772 | .pm = &sh_eth_dev_pm_ops, |
86a74ff2 NI |
1773 | }, |
1774 | }; | |
1775 | ||
1776 | static int __init sh_eth_init(void) | |
1777 | { | |
1778 | return platform_driver_register(&sh_eth_driver); | |
1779 | } | |
1780 | ||
1781 | static void __exit sh_eth_cleanup(void) | |
1782 | { | |
1783 | platform_driver_unregister(&sh_eth_driver); | |
1784 | } | |
1785 | ||
1786 | module_init(sh_eth_init); | |
1787 | module_exit(sh_eth_cleanup); | |
1788 | ||
1789 | MODULE_AUTHOR("Nobuhiro Iwamatsu, Yoshihiro Shimoda"); | |
1790 | MODULE_DESCRIPTION("Renesas SuperH Ethernet driver"); | |
1791 | MODULE_LICENSE("GPL v2"); |