Commit | Line | Data |
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86a74ff2 NI |
1 | /* |
2 | * SuperH Ethernet device driver | |
3 | * | |
b0ca2a21 | 4 | * Copyright (C) 2006-2008 Nobuhiro Iwamatsu |
86a74ff2 NI |
5 | * Copyright (C) 2008 Renesas Solutions Corp. |
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> | |
33 | ||
34 | #include "sh_eth.h" | |
35 | ||
71557a37 YS |
36 | /* CPU <-> EDMAC endian convert */ |
37 | static inline __u32 cpu_to_edmac(struct sh_eth_private *mdp, u32 x) | |
38 | { | |
39 | switch (mdp->edmac_endian) { | |
40 | case EDMAC_LITTLE_ENDIAN: | |
41 | return cpu_to_le32(x); | |
42 | case EDMAC_BIG_ENDIAN: | |
43 | return cpu_to_be32(x); | |
44 | } | |
45 | return x; | |
46 | } | |
47 | ||
48 | static inline __u32 edmac_to_cpu(struct sh_eth_private *mdp, u32 x) | |
49 | { | |
50 | switch (mdp->edmac_endian) { | |
51 | case EDMAC_LITTLE_ENDIAN: | |
52 | return le32_to_cpu(x); | |
53 | case EDMAC_BIG_ENDIAN: | |
54 | return be32_to_cpu(x); | |
55 | } | |
56 | return x; | |
57 | } | |
58 | ||
86a74ff2 NI |
59 | /* |
60 | * Program the hardware MAC address from dev->dev_addr. | |
61 | */ | |
62 | static void update_mac_address(struct net_device *ndev) | |
63 | { | |
64 | u32 ioaddr = ndev->base_addr; | |
65 | ||
66 | ctrl_outl((ndev->dev_addr[0] << 24) | (ndev->dev_addr[1] << 16) | | |
67 | (ndev->dev_addr[2] << 8) | (ndev->dev_addr[3]), | |
68 | ioaddr + MAHR); | |
69 | ctrl_outl((ndev->dev_addr[4] << 8) | (ndev->dev_addr[5]), | |
70 | ioaddr + MALR); | |
71 | } | |
72 | ||
73 | /* | |
74 | * Get MAC address from SuperH MAC address register | |
75 | * | |
76 | * SuperH's Ethernet device doesn't have 'ROM' to MAC address. | |
77 | * This driver get MAC address that use by bootloader(U-boot or sh-ipl+g). | |
78 | * When you want use this device, you must set MAC address in bootloader. | |
79 | * | |
80 | */ | |
81 | static void read_mac_address(struct net_device *ndev) | |
82 | { | |
83 | u32 ioaddr = ndev->base_addr; | |
84 | ||
85 | ndev->dev_addr[0] = (ctrl_inl(ioaddr + MAHR) >> 24); | |
86 | ndev->dev_addr[1] = (ctrl_inl(ioaddr + MAHR) >> 16) & 0xFF; | |
87 | ndev->dev_addr[2] = (ctrl_inl(ioaddr + MAHR) >> 8) & 0xFF; | |
88 | ndev->dev_addr[3] = (ctrl_inl(ioaddr + MAHR) & 0xFF); | |
89 | ndev->dev_addr[4] = (ctrl_inl(ioaddr + MALR) >> 8) & 0xFF; | |
90 | ndev->dev_addr[5] = (ctrl_inl(ioaddr + MALR) & 0xFF); | |
91 | } | |
92 | ||
93 | struct bb_info { | |
94 | struct mdiobb_ctrl ctrl; | |
95 | u32 addr; | |
96 | u32 mmd_msk;/* MMD */ | |
97 | u32 mdo_msk; | |
98 | u32 mdi_msk; | |
99 | u32 mdc_msk; | |
100 | }; | |
101 | ||
102 | /* PHY bit set */ | |
103 | static void bb_set(u32 addr, u32 msk) | |
104 | { | |
105 | ctrl_outl(ctrl_inl(addr) | msk, addr); | |
106 | } | |
107 | ||
108 | /* PHY bit clear */ | |
109 | static void bb_clr(u32 addr, u32 msk) | |
110 | { | |
111 | ctrl_outl((ctrl_inl(addr) & ~msk), addr); | |
112 | } | |
113 | ||
114 | /* PHY bit read */ | |
115 | static int bb_read(u32 addr, u32 msk) | |
116 | { | |
117 | return (ctrl_inl(addr) & msk) != 0; | |
118 | } | |
119 | ||
120 | /* Data I/O pin control */ | |
121 | static void sh_mmd_ctrl(struct mdiobb_ctrl *ctrl, int bit) | |
122 | { | |
123 | struct bb_info *bitbang = container_of(ctrl, struct bb_info, ctrl); | |
124 | if (bit) | |
125 | bb_set(bitbang->addr, bitbang->mmd_msk); | |
126 | else | |
127 | bb_clr(bitbang->addr, bitbang->mmd_msk); | |
128 | } | |
129 | ||
130 | /* Set bit data*/ | |
131 | static void sh_set_mdio(struct mdiobb_ctrl *ctrl, int bit) | |
132 | { | |
133 | struct bb_info *bitbang = container_of(ctrl, struct bb_info, ctrl); | |
134 | ||
135 | if (bit) | |
136 | bb_set(bitbang->addr, bitbang->mdo_msk); | |
137 | else | |
138 | bb_clr(bitbang->addr, bitbang->mdo_msk); | |
139 | } | |
140 | ||
141 | /* Get bit data*/ | |
142 | static int sh_get_mdio(struct mdiobb_ctrl *ctrl) | |
143 | { | |
144 | struct bb_info *bitbang = container_of(ctrl, struct bb_info, ctrl); | |
145 | return bb_read(bitbang->addr, bitbang->mdi_msk); | |
146 | } | |
147 | ||
148 | /* MDC pin control */ | |
149 | static void sh_mdc_ctrl(struct mdiobb_ctrl *ctrl, int bit) | |
150 | { | |
151 | struct bb_info *bitbang = container_of(ctrl, struct bb_info, ctrl); | |
152 | ||
153 | if (bit) | |
154 | bb_set(bitbang->addr, bitbang->mdc_msk); | |
155 | else | |
156 | bb_clr(bitbang->addr, bitbang->mdc_msk); | |
157 | } | |
158 | ||
159 | /* mdio bus control struct */ | |
160 | static struct mdiobb_ops bb_ops = { | |
161 | .owner = THIS_MODULE, | |
162 | .set_mdc = sh_mdc_ctrl, | |
163 | .set_mdio_dir = sh_mmd_ctrl, | |
164 | .set_mdio_data = sh_set_mdio, | |
165 | .get_mdio_data = sh_get_mdio, | |
166 | }; | |
167 | ||
b0ca2a21 | 168 | /* Chip Reset */ |
86a74ff2 NI |
169 | static void sh_eth_reset(struct net_device *ndev) |
170 | { | |
171 | u32 ioaddr = ndev->base_addr; | |
172 | ||
b0ca2a21 NI |
173 | #if defined(CONFIG_CPU_SUBTYPE_SH7763) |
174 | int cnt = 100; | |
175 | ||
176 | ctrl_outl(EDSR_ENALL, ioaddr + EDSR); | |
177 | ctrl_outl(ctrl_inl(ioaddr + EDMR) | EDMR_SRST, ioaddr + EDMR); | |
178 | while (cnt > 0) { | |
179 | if (!(ctrl_inl(ioaddr + EDMR) & 0x3)) | |
180 | break; | |
181 | mdelay(1); | |
182 | cnt--; | |
183 | } | |
184 | if (cnt < 0) | |
185 | printk(KERN_ERR "Device reset fail\n"); | |
186 | ||
187 | /* Table Init */ | |
188 | ctrl_outl(0x0, ioaddr + TDLAR); | |
189 | ctrl_outl(0x0, ioaddr + TDFAR); | |
190 | ctrl_outl(0x0, ioaddr + TDFXR); | |
191 | ctrl_outl(0x0, ioaddr + TDFFR); | |
192 | ctrl_outl(0x0, ioaddr + RDLAR); | |
193 | ctrl_outl(0x0, ioaddr + RDFAR); | |
194 | ctrl_outl(0x0, ioaddr + RDFXR); | |
195 | ctrl_outl(0x0, ioaddr + RDFFR); | |
196 | #else | |
86a74ff2 NI |
197 | ctrl_outl(ctrl_inl(ioaddr + EDMR) | EDMR_SRST, ioaddr + EDMR); |
198 | mdelay(3); | |
199 | ctrl_outl(ctrl_inl(ioaddr + EDMR) & ~EDMR_SRST, ioaddr + EDMR); | |
b0ca2a21 | 200 | #endif |
86a74ff2 NI |
201 | } |
202 | ||
203 | /* free skb and descriptor buffer */ | |
204 | static void sh_eth_ring_free(struct net_device *ndev) | |
205 | { | |
206 | struct sh_eth_private *mdp = netdev_priv(ndev); | |
207 | int i; | |
208 | ||
209 | /* Free Rx skb ringbuffer */ | |
210 | if (mdp->rx_skbuff) { | |
211 | for (i = 0; i < RX_RING_SIZE; i++) { | |
212 | if (mdp->rx_skbuff[i]) | |
213 | dev_kfree_skb(mdp->rx_skbuff[i]); | |
214 | } | |
215 | } | |
216 | kfree(mdp->rx_skbuff); | |
217 | ||
218 | /* Free Tx skb ringbuffer */ | |
219 | if (mdp->tx_skbuff) { | |
220 | for (i = 0; i < TX_RING_SIZE; i++) { | |
221 | if (mdp->tx_skbuff[i]) | |
222 | dev_kfree_skb(mdp->tx_skbuff[i]); | |
223 | } | |
224 | } | |
225 | kfree(mdp->tx_skbuff); | |
226 | } | |
227 | ||
228 | /* format skb and descriptor buffer */ | |
229 | static void sh_eth_ring_format(struct net_device *ndev) | |
230 | { | |
b0ca2a21 | 231 | u32 ioaddr = ndev->base_addr, reserve = 0; |
86a74ff2 NI |
232 | struct sh_eth_private *mdp = netdev_priv(ndev); |
233 | int i; | |
234 | struct sk_buff *skb; | |
235 | struct sh_eth_rxdesc *rxdesc = NULL; | |
236 | struct sh_eth_txdesc *txdesc = NULL; | |
237 | int rx_ringsize = sizeof(*rxdesc) * RX_RING_SIZE; | |
238 | int tx_ringsize = sizeof(*txdesc) * TX_RING_SIZE; | |
239 | ||
240 | mdp->cur_rx = mdp->cur_tx = 0; | |
241 | mdp->dirty_rx = mdp->dirty_tx = 0; | |
242 | ||
243 | memset(mdp->rx_ring, 0, rx_ringsize); | |
244 | ||
245 | /* build Rx ring buffer */ | |
246 | for (i = 0; i < RX_RING_SIZE; i++) { | |
247 | /* skb */ | |
248 | mdp->rx_skbuff[i] = NULL; | |
249 | skb = dev_alloc_skb(mdp->rx_buf_sz); | |
250 | mdp->rx_skbuff[i] = skb; | |
251 | if (skb == NULL) | |
252 | break; | |
b0ca2a21 NI |
253 | skb->dev = ndev; /* Mark as being used by this device. */ |
254 | #if defined(CONFIG_CPU_SUBTYPE_SH7763) | |
255 | reserve = SH7763_SKB_ALIGN | |
256 | - ((uint32_t)skb->data & (SH7763_SKB_ALIGN-1)); | |
257 | if (reserve) | |
258 | skb_reserve(skb, reserve); | |
259 | #else | |
86a74ff2 | 260 | skb_reserve(skb, RX_OFFSET); |
b0ca2a21 | 261 | #endif |
86a74ff2 NI |
262 | /* RX descriptor */ |
263 | rxdesc = &mdp->rx_ring[i]; | |
264 | rxdesc->addr = (u32)skb->data & ~0x3UL; | |
71557a37 | 265 | rxdesc->status = cpu_to_edmac(mdp, RD_RACT | RD_RFP); |
86a74ff2 NI |
266 | |
267 | /* The size of the buffer is 16 byte boundary. */ | |
268 | rxdesc->buffer_length = (mdp->rx_buf_sz + 16) & ~0x0F; | |
b0ca2a21 NI |
269 | /* Rx descriptor address set */ |
270 | if (i == 0) { | |
271 | ctrl_outl((u32)rxdesc, ioaddr + RDLAR); | |
272 | #if defined(CONFIG_CPU_SUBTYPE_SH7763) | |
273 | ctrl_outl((u32)rxdesc, ioaddr + RDFAR); | |
274 | #endif | |
275 | } | |
86a74ff2 NI |
276 | } |
277 | ||
b0ca2a21 NI |
278 | /* Rx descriptor address set */ |
279 | #if defined(CONFIG_CPU_SUBTYPE_SH7763) | |
280 | ctrl_outl((u32)rxdesc, ioaddr + RDFXR); | |
281 | ctrl_outl(0x1, ioaddr + RDFFR); | |
282 | #endif | |
283 | ||
86a74ff2 NI |
284 | mdp->dirty_rx = (u32) (i - RX_RING_SIZE); |
285 | ||
286 | /* Mark the last entry as wrapping the ring. */ | |
71557a37 | 287 | rxdesc->status |= cpu_to_edmac(mdp, RD_RDEL); |
86a74ff2 NI |
288 | |
289 | memset(mdp->tx_ring, 0, tx_ringsize); | |
290 | ||
291 | /* build Tx ring buffer */ | |
292 | for (i = 0; i < TX_RING_SIZE; i++) { | |
293 | mdp->tx_skbuff[i] = NULL; | |
294 | txdesc = &mdp->tx_ring[i]; | |
71557a37 | 295 | txdesc->status = cpu_to_edmac(mdp, TD_TFP); |
86a74ff2 | 296 | txdesc->buffer_length = 0; |
b0ca2a21 | 297 | if (i == 0) { |
71557a37 | 298 | /* Tx descriptor address set */ |
b0ca2a21 NI |
299 | ctrl_outl((u32)txdesc, ioaddr + TDLAR); |
300 | #if defined(CONFIG_CPU_SUBTYPE_SH7763) | |
301 | ctrl_outl((u32)txdesc, ioaddr + TDFAR); | |
302 | #endif | |
303 | } | |
86a74ff2 NI |
304 | } |
305 | ||
71557a37 | 306 | /* Tx descriptor address set */ |
b0ca2a21 NI |
307 | #if defined(CONFIG_CPU_SUBTYPE_SH7763) |
308 | ctrl_outl((u32)txdesc, ioaddr + TDFXR); | |
309 | ctrl_outl(0x1, ioaddr + TDFFR); | |
310 | #endif | |
311 | ||
71557a37 | 312 | txdesc->status |= cpu_to_edmac(mdp, TD_TDLE); |
86a74ff2 NI |
313 | } |
314 | ||
315 | /* Get skb and descriptor buffer */ | |
316 | static int sh_eth_ring_init(struct net_device *ndev) | |
317 | { | |
318 | struct sh_eth_private *mdp = netdev_priv(ndev); | |
319 | int rx_ringsize, tx_ringsize, ret = 0; | |
320 | ||
321 | /* | |
322 | * +26 gets the maximum ethernet encapsulation, +7 & ~7 because the | |
323 | * card needs room to do 8 byte alignment, +2 so we can reserve | |
324 | * the first 2 bytes, and +16 gets room for the status word from the | |
325 | * card. | |
326 | */ | |
327 | mdp->rx_buf_sz = (ndev->mtu <= 1492 ? PKT_BUF_SZ : | |
328 | (((ndev->mtu + 26 + 7) & ~7) + 2 + 16)); | |
329 | ||
330 | /* Allocate RX and TX skb rings */ | |
331 | mdp->rx_skbuff = kmalloc(sizeof(*mdp->rx_skbuff) * RX_RING_SIZE, | |
332 | GFP_KERNEL); | |
333 | if (!mdp->rx_skbuff) { | |
334 | printk(KERN_ERR "%s: Cannot allocate Rx skb\n", ndev->name); | |
335 | ret = -ENOMEM; | |
336 | return ret; | |
337 | } | |
338 | ||
339 | mdp->tx_skbuff = kmalloc(sizeof(*mdp->tx_skbuff) * TX_RING_SIZE, | |
340 | GFP_KERNEL); | |
341 | if (!mdp->tx_skbuff) { | |
342 | printk(KERN_ERR "%s: Cannot allocate Tx skb\n", ndev->name); | |
343 | ret = -ENOMEM; | |
344 | goto skb_ring_free; | |
345 | } | |
346 | ||
347 | /* Allocate all Rx descriptors. */ | |
348 | rx_ringsize = sizeof(struct sh_eth_rxdesc) * RX_RING_SIZE; | |
349 | mdp->rx_ring = dma_alloc_coherent(NULL, rx_ringsize, &mdp->rx_desc_dma, | |
350 | GFP_KERNEL); | |
351 | ||
352 | if (!mdp->rx_ring) { | |
353 | printk(KERN_ERR "%s: Cannot allocate Rx Ring (size %d bytes)\n", | |
354 | ndev->name, rx_ringsize); | |
355 | ret = -ENOMEM; | |
356 | goto desc_ring_free; | |
357 | } | |
358 | ||
359 | mdp->dirty_rx = 0; | |
360 | ||
361 | /* Allocate all Tx descriptors. */ | |
362 | tx_ringsize = sizeof(struct sh_eth_txdesc) * TX_RING_SIZE; | |
363 | mdp->tx_ring = dma_alloc_coherent(NULL, tx_ringsize, &mdp->tx_desc_dma, | |
364 | GFP_KERNEL); | |
365 | if (!mdp->tx_ring) { | |
366 | printk(KERN_ERR "%s: Cannot allocate Tx Ring (size %d bytes)\n", | |
367 | ndev->name, tx_ringsize); | |
368 | ret = -ENOMEM; | |
369 | goto desc_ring_free; | |
370 | } | |
371 | return ret; | |
372 | ||
373 | desc_ring_free: | |
374 | /* free DMA buffer */ | |
375 | dma_free_coherent(NULL, rx_ringsize, mdp->rx_ring, mdp->rx_desc_dma); | |
376 | ||
377 | skb_ring_free: | |
378 | /* Free Rx and Tx skb ring buffer */ | |
379 | sh_eth_ring_free(ndev); | |
380 | ||
381 | return ret; | |
382 | } | |
383 | ||
384 | static int sh_eth_dev_init(struct net_device *ndev) | |
385 | { | |
386 | int ret = 0; | |
387 | struct sh_eth_private *mdp = netdev_priv(ndev); | |
388 | u32 ioaddr = ndev->base_addr; | |
389 | u_int32_t rx_int_var, tx_int_var; | |
390 | u32 val; | |
391 | ||
392 | /* Soft Reset */ | |
393 | sh_eth_reset(ndev); | |
394 | ||
b0ca2a21 NI |
395 | /* Descriptor format */ |
396 | sh_eth_ring_format(ndev); | |
397 | ctrl_outl(RPADIR_INIT, ioaddr + RPADIR); | |
86a74ff2 NI |
398 | |
399 | /* all sh_eth int mask */ | |
400 | ctrl_outl(0, ioaddr + EESIPR); | |
401 | ||
b0ca2a21 NI |
402 | #if defined(CONFIG_CPU_SUBTYPE_SH7763) |
403 | ctrl_outl(EDMR_EL, ioaddr + EDMR); | |
404 | #else | |
86a74ff2 | 405 | ctrl_outl(0, ioaddr + EDMR); /* Endian change */ |
b0ca2a21 | 406 | #endif |
86a74ff2 | 407 | |
b0ca2a21 | 408 | /* FIFO size set */ |
86a74ff2 NI |
409 | ctrl_outl((FIFO_SIZE_T | FIFO_SIZE_R), ioaddr + FDR); |
410 | ctrl_outl(0, ioaddr + TFTR); | |
411 | ||
b0ca2a21 | 412 | /* Frame recv control */ |
0caa1166 | 413 | ctrl_outl(0, ioaddr + RMCR); |
86a74ff2 NI |
414 | |
415 | rx_int_var = mdp->rx_int_var = DESC_I_RINT8 | DESC_I_RINT5; | |
416 | tx_int_var = mdp->tx_int_var = DESC_I_TINT2; | |
417 | ctrl_outl(rx_int_var | tx_int_var, ioaddr + TRSCER); | |
418 | ||
b0ca2a21 NI |
419 | #if defined(CONFIG_CPU_SUBTYPE_SH7763) |
420 | /* Burst sycle set */ | |
421 | ctrl_outl(0x800, ioaddr + BCULR); | |
422 | #endif | |
423 | ||
86a74ff2 | 424 | ctrl_outl((FIFO_F_D_RFF | FIFO_F_D_RFD), ioaddr + FCFTR); |
86a74ff2 | 425 | |
b0ca2a21 NI |
426 | #if !defined(CONFIG_CPU_SUBTYPE_SH7763) |
427 | ctrl_outl(0, ioaddr + TRIMD); | |
428 | #endif | |
86a74ff2 | 429 | |
b0ca2a21 NI |
430 | /* Recv frame limit set register */ |
431 | ctrl_outl(RFLR_VALUE, ioaddr + RFLR); | |
86a74ff2 NI |
432 | |
433 | ctrl_outl(ctrl_inl(ioaddr + EESR), ioaddr + EESR); | |
434 | ctrl_outl((DMAC_M_RFRMER | DMAC_M_ECI | 0x003fffff), ioaddr + EESIPR); | |
435 | ||
436 | /* PAUSE Prohibition */ | |
437 | val = (ctrl_inl(ioaddr + ECMR) & ECMR_DM) | | |
438 | ECMR_ZPF | (mdp->duplex ? ECMR_DM : 0) | ECMR_TE | ECMR_RE; | |
439 | ||
440 | ctrl_outl(val, ioaddr + ECMR); | |
b0ca2a21 NI |
441 | |
442 | /* E-MAC Status Register clear */ | |
443 | ctrl_outl(ECSR_INIT, ioaddr + ECSR); | |
444 | ||
445 | /* E-MAC Interrupt Enable register */ | |
446 | ctrl_outl(ECSIPR_INIT, ioaddr + ECSIPR); | |
86a74ff2 NI |
447 | |
448 | /* Set MAC address */ | |
449 | update_mac_address(ndev); | |
450 | ||
451 | /* mask reset */ | |
b0ca2a21 | 452 | #if defined(CONFIG_CPU_SUBTYPE_SH7710) || defined(CONFIG_CPU_SUBTYPE_SH7763) |
86a74ff2 NI |
453 | ctrl_outl(APR_AP, ioaddr + APR); |
454 | ctrl_outl(MPR_MP, ioaddr + MPR); | |
455 | ctrl_outl(TPAUSER_UNLIMITED, ioaddr + TPAUSER); | |
b0ca2a21 NI |
456 | #endif |
457 | #if defined(CONFIG_CPU_SUBTYPE_SH7710) | |
86a74ff2 NI |
458 | ctrl_outl(BCFR_UNLIMITED, ioaddr + BCFR); |
459 | #endif | |
b0ca2a21 | 460 | |
86a74ff2 NI |
461 | /* Setting the Rx mode will start the Rx process. */ |
462 | ctrl_outl(EDRRR_R, ioaddr + EDRRR); | |
463 | ||
464 | netif_start_queue(ndev); | |
465 | ||
466 | return ret; | |
467 | } | |
468 | ||
469 | /* free Tx skb function */ | |
470 | static int sh_eth_txfree(struct net_device *ndev) | |
471 | { | |
472 | struct sh_eth_private *mdp = netdev_priv(ndev); | |
473 | struct sh_eth_txdesc *txdesc; | |
474 | int freeNum = 0; | |
475 | int entry = 0; | |
476 | ||
477 | for (; mdp->cur_tx - mdp->dirty_tx > 0; mdp->dirty_tx++) { | |
478 | entry = mdp->dirty_tx % TX_RING_SIZE; | |
479 | txdesc = &mdp->tx_ring[entry]; | |
71557a37 | 480 | if (txdesc->status & cpu_to_edmac(mdp, TD_TACT)) |
86a74ff2 NI |
481 | break; |
482 | /* Free the original skb. */ | |
483 | if (mdp->tx_skbuff[entry]) { | |
484 | dev_kfree_skb_irq(mdp->tx_skbuff[entry]); | |
485 | mdp->tx_skbuff[entry] = NULL; | |
486 | freeNum++; | |
487 | } | |
71557a37 | 488 | txdesc->status = cpu_to_edmac(mdp, TD_TFP); |
86a74ff2 | 489 | if (entry >= TX_RING_SIZE - 1) |
71557a37 | 490 | txdesc->status |= cpu_to_edmac(mdp, TD_TDLE); |
86a74ff2 NI |
491 | |
492 | mdp->stats.tx_packets++; | |
493 | mdp->stats.tx_bytes += txdesc->buffer_length; | |
494 | } | |
495 | return freeNum; | |
496 | } | |
497 | ||
498 | /* Packet receive function */ | |
499 | static int sh_eth_rx(struct net_device *ndev) | |
500 | { | |
501 | struct sh_eth_private *mdp = netdev_priv(ndev); | |
502 | struct sh_eth_rxdesc *rxdesc; | |
503 | ||
504 | int entry = mdp->cur_rx % RX_RING_SIZE; | |
505 | int boguscnt = (mdp->dirty_rx + RX_RING_SIZE) - mdp->cur_rx; | |
506 | struct sk_buff *skb; | |
507 | u16 pkt_len = 0; | |
b0ca2a21 | 508 | u32 desc_status, reserve = 0; |
86a74ff2 NI |
509 | |
510 | rxdesc = &mdp->rx_ring[entry]; | |
71557a37 YS |
511 | while (!(rxdesc->status & cpu_to_edmac(mdp, RD_RACT))) { |
512 | desc_status = edmac_to_cpu(mdp, rxdesc->status); | |
86a74ff2 NI |
513 | pkt_len = rxdesc->frame_length; |
514 | ||
515 | if (--boguscnt < 0) | |
516 | break; | |
517 | ||
518 | if (!(desc_status & RDFEND)) | |
519 | mdp->stats.rx_length_errors++; | |
520 | ||
521 | if (desc_status & (RD_RFS1 | RD_RFS2 | RD_RFS3 | RD_RFS4 | | |
522 | RD_RFS5 | RD_RFS6 | RD_RFS10)) { | |
523 | mdp->stats.rx_errors++; | |
524 | if (desc_status & RD_RFS1) | |
525 | mdp->stats.rx_crc_errors++; | |
526 | if (desc_status & RD_RFS2) | |
527 | mdp->stats.rx_frame_errors++; | |
528 | if (desc_status & RD_RFS3) | |
529 | mdp->stats.rx_length_errors++; | |
530 | if (desc_status & RD_RFS4) | |
531 | mdp->stats.rx_length_errors++; | |
532 | if (desc_status & RD_RFS6) | |
533 | mdp->stats.rx_missed_errors++; | |
534 | if (desc_status & RD_RFS10) | |
535 | mdp->stats.rx_over_errors++; | |
536 | } else { | |
537 | swaps((char *)(rxdesc->addr & ~0x3), pkt_len + 2); | |
538 | skb = mdp->rx_skbuff[entry]; | |
539 | mdp->rx_skbuff[entry] = NULL; | |
540 | skb_put(skb, pkt_len); | |
541 | skb->protocol = eth_type_trans(skb, ndev); | |
542 | netif_rx(skb); | |
543 | ndev->last_rx = jiffies; | |
544 | mdp->stats.rx_packets++; | |
545 | mdp->stats.rx_bytes += pkt_len; | |
546 | } | |
71557a37 | 547 | rxdesc->status |= cpu_to_edmac(mdp, RD_RACT); |
86a74ff2 NI |
548 | entry = (++mdp->cur_rx) % RX_RING_SIZE; |
549 | } | |
550 | ||
551 | /* Refill the Rx ring buffers. */ | |
552 | for (; mdp->cur_rx - mdp->dirty_rx > 0; mdp->dirty_rx++) { | |
553 | entry = mdp->dirty_rx % RX_RING_SIZE; | |
554 | rxdesc = &mdp->rx_ring[entry]; | |
b0ca2a21 NI |
555 | /* The size of the buffer is 16 byte boundary. */ |
556 | rxdesc->buffer_length = (mdp->rx_buf_sz + 16) & ~0x0F; | |
557 | ||
86a74ff2 NI |
558 | if (mdp->rx_skbuff[entry] == NULL) { |
559 | skb = dev_alloc_skb(mdp->rx_buf_sz); | |
560 | mdp->rx_skbuff[entry] = skb; | |
561 | if (skb == NULL) | |
562 | break; /* Better luck next round. */ | |
563 | skb->dev = ndev; | |
b0ca2a21 NI |
564 | #if defined(CONFIG_CPU_SUBTYPE_SH7763) |
565 | reserve = SH7763_SKB_ALIGN | |
566 | - ((uint32_t)skb->data & (SH7763_SKB_ALIGN-1)); | |
567 | if (reserve) | |
568 | skb_reserve(skb, reserve); | |
569 | #else | |
86a74ff2 | 570 | skb_reserve(skb, RX_OFFSET); |
b0ca2a21 NI |
571 | #endif |
572 | skb->ip_summed = CHECKSUM_NONE; | |
86a74ff2 NI |
573 | rxdesc->addr = (u32)skb->data & ~0x3UL; |
574 | } | |
86a74ff2 NI |
575 | if (entry >= RX_RING_SIZE - 1) |
576 | rxdesc->status |= | |
71557a37 | 577 | cpu_to_edmac(mdp, RD_RACT | RD_RFP | RD_RDEL); |
86a74ff2 NI |
578 | else |
579 | rxdesc->status |= | |
71557a37 | 580 | cpu_to_edmac(mdp, RD_RACT | RD_RFP); |
86a74ff2 NI |
581 | } |
582 | ||
583 | /* Restart Rx engine if stopped. */ | |
584 | /* If we don't need to check status, don't. -KDU */ | |
b0ca2a21 NI |
585 | if (!(ctrl_inl(ndev->base_addr + EDRRR) & EDRRR_R)) |
586 | ctrl_outl(EDRRR_R, ndev->base_addr + EDRRR); | |
86a74ff2 NI |
587 | |
588 | return 0; | |
589 | } | |
590 | ||
591 | /* error control function */ | |
592 | static void sh_eth_error(struct net_device *ndev, int intr_status) | |
593 | { | |
594 | struct sh_eth_private *mdp = netdev_priv(ndev); | |
595 | u32 ioaddr = ndev->base_addr; | |
596 | u32 felic_stat; | |
597 | ||
598 | if (intr_status & EESR_ECI) { | |
599 | felic_stat = ctrl_inl(ioaddr + ECSR); | |
600 | ctrl_outl(felic_stat, ioaddr + ECSR); /* clear int */ | |
601 | if (felic_stat & ECSR_ICD) | |
602 | mdp->stats.tx_carrier_errors++; | |
603 | if (felic_stat & ECSR_LCHNG) { | |
604 | /* Link Changed */ | |
605 | u32 link_stat = (ctrl_inl(ioaddr + PSR)); | |
606 | if (!(link_stat & PHY_ST_LINK)) { | |
607 | /* Link Down : disable tx and rx */ | |
608 | ctrl_outl(ctrl_inl(ioaddr + ECMR) & | |
609 | ~(ECMR_RE | ECMR_TE), ioaddr + ECMR); | |
610 | } else { | |
611 | /* Link Up */ | |
612 | ctrl_outl(ctrl_inl(ioaddr + EESIPR) & | |
613 | ~DMAC_M_ECI, ioaddr + EESIPR); | |
614 | /*clear int */ | |
615 | ctrl_outl(ctrl_inl(ioaddr + ECSR), | |
616 | ioaddr + ECSR); | |
617 | ctrl_outl(ctrl_inl(ioaddr + EESIPR) | | |
618 | DMAC_M_ECI, ioaddr + EESIPR); | |
619 | /* enable tx and rx */ | |
620 | ctrl_outl(ctrl_inl(ioaddr + ECMR) | | |
621 | (ECMR_RE | ECMR_TE), ioaddr + ECMR); | |
622 | } | |
623 | } | |
624 | } | |
625 | ||
626 | if (intr_status & EESR_TWB) { | |
627 | /* Write buck end. unused write back interrupt */ | |
628 | if (intr_status & EESR_TABT) /* Transmit Abort int */ | |
629 | mdp->stats.tx_aborted_errors++; | |
630 | } | |
631 | ||
632 | if (intr_status & EESR_RABT) { | |
633 | /* Receive Abort int */ | |
634 | if (intr_status & EESR_RFRMER) { | |
635 | /* Receive Frame Overflow int */ | |
636 | mdp->stats.rx_frame_errors++; | |
637 | printk(KERN_ERR "Receive Frame Overflow\n"); | |
638 | } | |
639 | } | |
b0ca2a21 | 640 | #if !defined(CONFIG_CPU_SUBTYPE_SH7763) |
86a74ff2 NI |
641 | if (intr_status & EESR_ADE) { |
642 | if (intr_status & EESR_TDE) { | |
643 | if (intr_status & EESR_TFE) | |
644 | mdp->stats.tx_fifo_errors++; | |
645 | } | |
646 | } | |
b0ca2a21 | 647 | #endif |
86a74ff2 NI |
648 | |
649 | if (intr_status & EESR_RDE) { | |
650 | /* Receive Descriptor Empty int */ | |
651 | mdp->stats.rx_over_errors++; | |
652 | ||
653 | if (ctrl_inl(ioaddr + EDRRR) ^ EDRRR_R) | |
654 | ctrl_outl(EDRRR_R, ioaddr + EDRRR); | |
655 | printk(KERN_ERR "Receive Descriptor Empty\n"); | |
656 | } | |
657 | if (intr_status & EESR_RFE) { | |
658 | /* Receive FIFO Overflow int */ | |
659 | mdp->stats.rx_fifo_errors++; | |
660 | printk(KERN_ERR "Receive FIFO Overflow\n"); | |
661 | } | |
b0ca2a21 NI |
662 | if (intr_status & (EESR_TWB | EESR_TABT | |
663 | #if !defined(CONFIG_CPU_SUBTYPE_SH7763) | |
664 | EESR_ADE | | |
665 | #endif | |
666 | EESR_TDE | EESR_TFE)) { | |
86a74ff2 NI |
667 | /* Tx error */ |
668 | u32 edtrr = ctrl_inl(ndev->base_addr + EDTRR); | |
669 | /* dmesg */ | |
670 | printk(KERN_ERR "%s:TX error. status=%8.8x cur_tx=%8.8x ", | |
671 | ndev->name, intr_status, mdp->cur_tx); | |
672 | printk(KERN_ERR "dirty_tx=%8.8x state=%8.8x EDTRR=%8.8x.\n", | |
673 | mdp->dirty_tx, (u32) ndev->state, edtrr); | |
674 | /* dirty buffer free */ | |
675 | sh_eth_txfree(ndev); | |
676 | ||
677 | /* SH7712 BUG */ | |
678 | if (edtrr ^ EDTRR_TRNS) { | |
679 | /* tx dma start */ | |
680 | ctrl_outl(EDTRR_TRNS, ndev->base_addr + EDTRR); | |
681 | } | |
682 | /* wakeup */ | |
683 | netif_wake_queue(ndev); | |
684 | } | |
685 | } | |
686 | ||
687 | static irqreturn_t sh_eth_interrupt(int irq, void *netdev) | |
688 | { | |
689 | struct net_device *ndev = netdev; | |
690 | struct sh_eth_private *mdp = netdev_priv(ndev); | |
691 | u32 ioaddr, boguscnt = RX_RING_SIZE; | |
692 | u32 intr_status = 0; | |
693 | ||
694 | ioaddr = ndev->base_addr; | |
695 | spin_lock(&mdp->lock); | |
696 | ||
b0ca2a21 | 697 | /* Get interrpt stat */ |
86a74ff2 NI |
698 | intr_status = ctrl_inl(ioaddr + EESR); |
699 | /* Clear interrupt */ | |
700 | ctrl_outl(intr_status, ioaddr + EESR); | |
701 | ||
b0ca2a21 NI |
702 | if (intr_status & (EESR_FRC | /* Frame recv*/ |
703 | EESR_RMAF | /* Multi cast address recv*/ | |
704 | EESR_RRF | /* Bit frame recv */ | |
705 | EESR_RTLF | /* Long frame recv*/ | |
706 | EESR_RTSF | /* short frame recv */ | |
707 | EESR_PRE | /* PHY-LSI recv error */ | |
708 | EESR_CERF)){ /* recv frame CRC error */ | |
86a74ff2 | 709 | sh_eth_rx(ndev); |
b0ca2a21 | 710 | } |
86a74ff2 | 711 | |
b0ca2a21 NI |
712 | /* Tx Check */ |
713 | if (intr_status & TX_CHECK) { | |
86a74ff2 NI |
714 | sh_eth_txfree(ndev); |
715 | netif_wake_queue(ndev); | |
716 | } | |
717 | ||
718 | if (intr_status & EESR_ERR_CHECK) | |
719 | sh_eth_error(ndev, intr_status); | |
720 | ||
721 | if (--boguscnt < 0) { | |
722 | printk(KERN_WARNING | |
723 | "%s: Too much work at interrupt, status=0x%4.4x.\n", | |
724 | ndev->name, intr_status); | |
725 | } | |
726 | ||
727 | spin_unlock(&mdp->lock); | |
728 | ||
729 | return IRQ_HANDLED; | |
730 | } | |
731 | ||
732 | static void sh_eth_timer(unsigned long data) | |
733 | { | |
734 | struct net_device *ndev = (struct net_device *)data; | |
735 | struct sh_eth_private *mdp = netdev_priv(ndev); | |
736 | ||
737 | mod_timer(&mdp->timer, jiffies + (10 * HZ)); | |
738 | } | |
739 | ||
740 | /* PHY state control function */ | |
741 | static void sh_eth_adjust_link(struct net_device *ndev) | |
742 | { | |
743 | struct sh_eth_private *mdp = netdev_priv(ndev); | |
744 | struct phy_device *phydev = mdp->phydev; | |
745 | u32 ioaddr = ndev->base_addr; | |
746 | int new_state = 0; | |
747 | ||
748 | if (phydev->link != PHY_DOWN) { | |
749 | if (phydev->duplex != mdp->duplex) { | |
750 | new_state = 1; | |
751 | mdp->duplex = phydev->duplex; | |
b0ca2a21 NI |
752 | #if defined(CONFIG_CPU_SUBTYPE_SH7763) |
753 | if (mdp->duplex) { /* FULL */ | |
754 | ctrl_outl(ctrl_inl(ioaddr + ECMR) | ECMR_DM, | |
755 | ioaddr + ECMR); | |
756 | } else { /* Half */ | |
757 | ctrl_outl(ctrl_inl(ioaddr + ECMR) & ~ECMR_DM, | |
758 | ioaddr + ECMR); | |
759 | } | |
760 | #endif | |
86a74ff2 NI |
761 | } |
762 | ||
763 | if (phydev->speed != mdp->speed) { | |
764 | new_state = 1; | |
765 | mdp->speed = phydev->speed; | |
b0ca2a21 NI |
766 | #if defined(CONFIG_CPU_SUBTYPE_SH7763) |
767 | switch (mdp->speed) { | |
768 | case 10: /* 10BASE */ | |
769 | ctrl_outl(GECMR_10, ioaddr + GECMR); break; | |
770 | case 100:/* 100BASE */ | |
771 | ctrl_outl(GECMR_100, ioaddr + GECMR); break; | |
772 | case 1000: /* 1000BASE */ | |
773 | ctrl_outl(GECMR_1000, ioaddr + GECMR); break; | |
774 | default: | |
775 | break; | |
776 | } | |
777 | #endif | |
86a74ff2 NI |
778 | } |
779 | if (mdp->link == PHY_DOWN) { | |
780 | ctrl_outl((ctrl_inl(ioaddr + ECMR) & ~ECMR_TXF) | |
781 | | ECMR_DM, ioaddr + ECMR); | |
782 | new_state = 1; | |
783 | mdp->link = phydev->link; | |
86a74ff2 NI |
784 | } |
785 | } else if (mdp->link) { | |
786 | new_state = 1; | |
787 | mdp->link = PHY_DOWN; | |
788 | mdp->speed = 0; | |
789 | mdp->duplex = -1; | |
86a74ff2 NI |
790 | } |
791 | ||
792 | if (new_state) | |
793 | phy_print_status(phydev); | |
794 | } | |
795 | ||
796 | /* PHY init function */ | |
797 | static int sh_eth_phy_init(struct net_device *ndev) | |
798 | { | |
799 | struct sh_eth_private *mdp = netdev_priv(ndev); | |
800 | char phy_id[BUS_ID_SIZE]; | |
801 | struct phy_device *phydev = NULL; | |
802 | ||
803 | snprintf(phy_id, BUS_ID_SIZE, PHY_ID_FMT, | |
804 | mdp->mii_bus->id , mdp->phy_id); | |
805 | ||
806 | mdp->link = PHY_DOWN; | |
807 | mdp->speed = 0; | |
808 | mdp->duplex = -1; | |
809 | ||
810 | /* Try connect to PHY */ | |
811 | phydev = phy_connect(ndev, phy_id, &sh_eth_adjust_link, | |
812 | 0, PHY_INTERFACE_MODE_MII); | |
813 | if (IS_ERR(phydev)) { | |
814 | dev_err(&ndev->dev, "phy_connect failed\n"); | |
815 | return PTR_ERR(phydev); | |
816 | } | |
817 | dev_info(&ndev->dev, "attached phy %i to driver %s\n", | |
818 | phydev->addr, phydev->drv->name); | |
819 | ||
820 | mdp->phydev = phydev; | |
821 | ||
822 | return 0; | |
823 | } | |
824 | ||
825 | /* PHY control start function */ | |
826 | static int sh_eth_phy_start(struct net_device *ndev) | |
827 | { | |
828 | struct sh_eth_private *mdp = netdev_priv(ndev); | |
829 | int ret; | |
830 | ||
831 | ret = sh_eth_phy_init(ndev); | |
832 | if (ret) | |
833 | return ret; | |
834 | ||
835 | /* reset phy - this also wakes it from PDOWN */ | |
836 | phy_write(mdp->phydev, MII_BMCR, BMCR_RESET); | |
837 | phy_start(mdp->phydev); | |
838 | ||
839 | return 0; | |
840 | } | |
841 | ||
842 | /* network device open function */ | |
843 | static int sh_eth_open(struct net_device *ndev) | |
844 | { | |
845 | int ret = 0; | |
846 | struct sh_eth_private *mdp = netdev_priv(ndev); | |
847 | ||
848 | ret = request_irq(ndev->irq, &sh_eth_interrupt, 0, ndev->name, ndev); | |
849 | if (ret) { | |
850 | printk(KERN_ERR "Can not assign IRQ number to %s\n", CARDNAME); | |
851 | return ret; | |
852 | } | |
853 | ||
854 | /* Descriptor set */ | |
855 | ret = sh_eth_ring_init(ndev); | |
856 | if (ret) | |
857 | goto out_free_irq; | |
858 | ||
859 | /* device init */ | |
860 | ret = sh_eth_dev_init(ndev); | |
861 | if (ret) | |
862 | goto out_free_irq; | |
863 | ||
864 | /* PHY control start*/ | |
865 | ret = sh_eth_phy_start(ndev); | |
866 | if (ret) | |
867 | goto out_free_irq; | |
868 | ||
869 | /* Set the timer to check for link beat. */ | |
870 | init_timer(&mdp->timer); | |
871 | mdp->timer.expires = (jiffies + (24 * HZ)) / 10;/* 2.4 sec. */ | |
b0ca2a21 | 872 | setup_timer(&mdp->timer, sh_eth_timer, (unsigned long)ndev); |
86a74ff2 NI |
873 | |
874 | return ret; | |
875 | ||
876 | out_free_irq: | |
877 | free_irq(ndev->irq, ndev); | |
878 | return ret; | |
879 | } | |
880 | ||
881 | /* Timeout function */ | |
882 | static void sh_eth_tx_timeout(struct net_device *ndev) | |
883 | { | |
884 | struct sh_eth_private *mdp = netdev_priv(ndev); | |
885 | u32 ioaddr = ndev->base_addr; | |
886 | struct sh_eth_rxdesc *rxdesc; | |
887 | int i; | |
888 | ||
889 | netif_stop_queue(ndev); | |
890 | ||
891 | /* worning message out. */ | |
892 | printk(KERN_WARNING "%s: transmit timed out, status %8.8x," | |
893 | " resetting...\n", ndev->name, (int)ctrl_inl(ioaddr + EESR)); | |
894 | ||
895 | /* tx_errors count up */ | |
896 | mdp->stats.tx_errors++; | |
897 | ||
898 | /* timer off */ | |
899 | del_timer_sync(&mdp->timer); | |
900 | ||
901 | /* Free all the skbuffs in the Rx queue. */ | |
902 | for (i = 0; i < RX_RING_SIZE; i++) { | |
903 | rxdesc = &mdp->rx_ring[i]; | |
904 | rxdesc->status = 0; | |
905 | rxdesc->addr = 0xBADF00D0; | |
906 | if (mdp->rx_skbuff[i]) | |
907 | dev_kfree_skb(mdp->rx_skbuff[i]); | |
908 | mdp->rx_skbuff[i] = NULL; | |
909 | } | |
910 | for (i = 0; i < TX_RING_SIZE; i++) { | |
911 | if (mdp->tx_skbuff[i]) | |
912 | dev_kfree_skb(mdp->tx_skbuff[i]); | |
913 | mdp->tx_skbuff[i] = NULL; | |
914 | } | |
915 | ||
916 | /* device init */ | |
917 | sh_eth_dev_init(ndev); | |
918 | ||
919 | /* timer on */ | |
920 | mdp->timer.expires = (jiffies + (24 * HZ)) / 10;/* 2.4 sec. */ | |
921 | add_timer(&mdp->timer); | |
922 | } | |
923 | ||
924 | /* Packet transmit function */ | |
925 | static int sh_eth_start_xmit(struct sk_buff *skb, struct net_device *ndev) | |
926 | { | |
927 | struct sh_eth_private *mdp = netdev_priv(ndev); | |
928 | struct sh_eth_txdesc *txdesc; | |
929 | u32 entry; | |
930 | int flags; | |
931 | ||
932 | spin_lock_irqsave(&mdp->lock, flags); | |
933 | if ((mdp->cur_tx - mdp->dirty_tx) >= (TX_RING_SIZE - 4)) { | |
934 | if (!sh_eth_txfree(ndev)) { | |
935 | netif_stop_queue(ndev); | |
936 | spin_unlock_irqrestore(&mdp->lock, flags); | |
937 | return 1; | |
938 | } | |
939 | } | |
940 | spin_unlock_irqrestore(&mdp->lock, flags); | |
941 | ||
942 | entry = mdp->cur_tx % TX_RING_SIZE; | |
943 | mdp->tx_skbuff[entry] = skb; | |
944 | txdesc = &mdp->tx_ring[entry]; | |
945 | txdesc->addr = (u32)(skb->data); | |
946 | /* soft swap. */ | |
947 | swaps((char *)(txdesc->addr & ~0x3), skb->len + 2); | |
948 | /* write back */ | |
949 | __flush_purge_region(skb->data, skb->len); | |
950 | if (skb->len < ETHERSMALL) | |
951 | txdesc->buffer_length = ETHERSMALL; | |
952 | else | |
953 | txdesc->buffer_length = skb->len; | |
954 | ||
955 | if (entry >= TX_RING_SIZE - 1) | |
71557a37 | 956 | txdesc->status |= cpu_to_edmac(mdp, TD_TACT | TD_TDLE); |
86a74ff2 | 957 | else |
71557a37 | 958 | txdesc->status |= cpu_to_edmac(mdp, TD_TACT); |
86a74ff2 NI |
959 | |
960 | mdp->cur_tx++; | |
961 | ||
b0ca2a21 NI |
962 | if (!(ctrl_inl(ndev->base_addr + EDTRR) & EDTRR_TRNS)) |
963 | ctrl_outl(EDTRR_TRNS, ndev->base_addr + EDTRR); | |
964 | ||
86a74ff2 NI |
965 | ndev->trans_start = jiffies; |
966 | ||
967 | return 0; | |
968 | } | |
969 | ||
970 | /* device close function */ | |
971 | static int sh_eth_close(struct net_device *ndev) | |
972 | { | |
973 | struct sh_eth_private *mdp = netdev_priv(ndev); | |
974 | u32 ioaddr = ndev->base_addr; | |
975 | int ringsize; | |
976 | ||
977 | netif_stop_queue(ndev); | |
978 | ||
979 | /* Disable interrupts by clearing the interrupt mask. */ | |
980 | ctrl_outl(0x0000, ioaddr + EESIPR); | |
981 | ||
982 | /* Stop the chip's Tx and Rx processes. */ | |
983 | ctrl_outl(0, ioaddr + EDTRR); | |
984 | ctrl_outl(0, ioaddr + EDRRR); | |
985 | ||
986 | /* PHY Disconnect */ | |
987 | if (mdp->phydev) { | |
988 | phy_stop(mdp->phydev); | |
989 | phy_disconnect(mdp->phydev); | |
990 | } | |
991 | ||
992 | free_irq(ndev->irq, ndev); | |
993 | ||
994 | del_timer_sync(&mdp->timer); | |
995 | ||
996 | /* Free all the skbuffs in the Rx queue. */ | |
997 | sh_eth_ring_free(ndev); | |
998 | ||
999 | /* free DMA buffer */ | |
1000 | ringsize = sizeof(struct sh_eth_rxdesc) * RX_RING_SIZE; | |
1001 | dma_free_coherent(NULL, ringsize, mdp->rx_ring, mdp->rx_desc_dma); | |
1002 | ||
1003 | /* free DMA buffer */ | |
1004 | ringsize = sizeof(struct sh_eth_txdesc) * TX_RING_SIZE; | |
1005 | dma_free_coherent(NULL, ringsize, mdp->tx_ring, mdp->tx_desc_dma); | |
1006 | ||
1007 | return 0; | |
1008 | } | |
1009 | ||
1010 | static struct net_device_stats *sh_eth_get_stats(struct net_device *ndev) | |
1011 | { | |
1012 | struct sh_eth_private *mdp = netdev_priv(ndev); | |
1013 | u32 ioaddr = ndev->base_addr; | |
1014 | ||
1015 | mdp->stats.tx_dropped += ctrl_inl(ioaddr + TROCR); | |
1016 | ctrl_outl(0, ioaddr + TROCR); /* (write clear) */ | |
1017 | mdp->stats.collisions += ctrl_inl(ioaddr + CDCR); | |
1018 | ctrl_outl(0, ioaddr + CDCR); /* (write clear) */ | |
1019 | mdp->stats.tx_carrier_errors += ctrl_inl(ioaddr + LCCR); | |
1020 | ctrl_outl(0, ioaddr + LCCR); /* (write clear) */ | |
b0ca2a21 NI |
1021 | #if defined(CONFIG_CPU_SUBTYPE_SH7763) |
1022 | mdp->stats.tx_carrier_errors += ctrl_inl(ioaddr + CERCR);/* CERCR */ | |
1023 | ctrl_outl(0, ioaddr + CERCR); /* (write clear) */ | |
1024 | mdp->stats.tx_carrier_errors += ctrl_inl(ioaddr + CEECR);/* CEECR */ | |
1025 | ctrl_outl(0, ioaddr + CEECR); /* (write clear) */ | |
1026 | #else | |
86a74ff2 NI |
1027 | mdp->stats.tx_carrier_errors += ctrl_inl(ioaddr + CNDCR); |
1028 | ctrl_outl(0, ioaddr + CNDCR); /* (write clear) */ | |
b0ca2a21 | 1029 | #endif |
86a74ff2 NI |
1030 | return &mdp->stats; |
1031 | } | |
1032 | ||
1033 | /* ioctl to device funciotn*/ | |
1034 | static int sh_eth_do_ioctl(struct net_device *ndev, struct ifreq *rq, | |
1035 | int cmd) | |
1036 | { | |
1037 | struct sh_eth_private *mdp = netdev_priv(ndev); | |
1038 | struct phy_device *phydev = mdp->phydev; | |
1039 | ||
1040 | if (!netif_running(ndev)) | |
1041 | return -EINVAL; | |
1042 | ||
1043 | if (!phydev) | |
1044 | return -ENODEV; | |
1045 | ||
1046 | return phy_mii_ioctl(phydev, if_mii(rq), cmd); | |
1047 | } | |
1048 | ||
1049 | ||
1050 | /* Multicast reception directions set */ | |
1051 | static void sh_eth_set_multicast_list(struct net_device *ndev) | |
1052 | { | |
1053 | u32 ioaddr = ndev->base_addr; | |
1054 | ||
1055 | if (ndev->flags & IFF_PROMISC) { | |
1056 | /* Set promiscuous. */ | |
1057 | ctrl_outl((ctrl_inl(ioaddr + ECMR) & ~ECMR_MCT) | ECMR_PRM, | |
1058 | ioaddr + ECMR); | |
1059 | } else { | |
1060 | /* Normal, unicast/broadcast-only mode. */ | |
1061 | ctrl_outl((ctrl_inl(ioaddr + ECMR) & ~ECMR_PRM) | ECMR_MCT, | |
1062 | ioaddr + ECMR); | |
1063 | } | |
1064 | } | |
1065 | ||
1066 | /* SuperH's TSU register init function */ | |
1067 | static void sh_eth_tsu_init(u32 ioaddr) | |
1068 | { | |
1069 | ctrl_outl(0, ioaddr + TSU_FWEN0); /* Disable forward(0->1) */ | |
1070 | ctrl_outl(0, ioaddr + TSU_FWEN1); /* Disable forward(1->0) */ | |
1071 | ctrl_outl(0, ioaddr + TSU_FCM); /* forward fifo 3k-3k */ | |
1072 | ctrl_outl(0xc, ioaddr + TSU_BSYSL0); | |
1073 | ctrl_outl(0xc, ioaddr + TSU_BSYSL1); | |
1074 | ctrl_outl(0, ioaddr + TSU_PRISL0); | |
1075 | ctrl_outl(0, ioaddr + TSU_PRISL1); | |
1076 | ctrl_outl(0, ioaddr + TSU_FWSL0); | |
1077 | ctrl_outl(0, ioaddr + TSU_FWSL1); | |
1078 | ctrl_outl(TSU_FWSLC_POSTENU | TSU_FWSLC_POSTENL, ioaddr + TSU_FWSLC); | |
b0ca2a21 NI |
1079 | #if defined(CONFIG_CPU_SUBTYPE_SH7763) |
1080 | ctrl_outl(0, ioaddr + TSU_QTAG0); /* Disable QTAG(0->1) */ | |
1081 | ctrl_outl(0, ioaddr + TSU_QTAG1); /* Disable QTAG(1->0) */ | |
1082 | #else | |
86a74ff2 NI |
1083 | ctrl_outl(0, ioaddr + TSU_QTAGM0); /* Disable QTAG(0->1) */ |
1084 | ctrl_outl(0, ioaddr + TSU_QTAGM1); /* Disable QTAG(1->0) */ | |
b0ca2a21 | 1085 | #endif |
86a74ff2 NI |
1086 | ctrl_outl(0, ioaddr + TSU_FWSR); /* all interrupt status clear */ |
1087 | ctrl_outl(0, ioaddr + TSU_FWINMK); /* Disable all interrupt */ | |
1088 | ctrl_outl(0, ioaddr + TSU_TEN); /* Disable all CAM entry */ | |
1089 | ctrl_outl(0, ioaddr + TSU_POST1); /* Disable CAM entry [ 0- 7] */ | |
1090 | ctrl_outl(0, ioaddr + TSU_POST2); /* Disable CAM entry [ 8-15] */ | |
1091 | ctrl_outl(0, ioaddr + TSU_POST3); /* Disable CAM entry [16-23] */ | |
1092 | ctrl_outl(0, ioaddr + TSU_POST4); /* Disable CAM entry [24-31] */ | |
1093 | } | |
1094 | ||
1095 | /* MDIO bus release function */ | |
1096 | static int sh_mdio_release(struct net_device *ndev) | |
1097 | { | |
1098 | struct mii_bus *bus = dev_get_drvdata(&ndev->dev); | |
1099 | ||
1100 | /* unregister mdio bus */ | |
1101 | mdiobus_unregister(bus); | |
1102 | ||
1103 | /* remove mdio bus info from net_device */ | |
1104 | dev_set_drvdata(&ndev->dev, NULL); | |
1105 | ||
1106 | /* free bitbang info */ | |
1107 | free_mdio_bitbang(bus); | |
1108 | ||
1109 | return 0; | |
1110 | } | |
1111 | ||
1112 | /* MDIO bus init function */ | |
1113 | static int sh_mdio_init(struct net_device *ndev, int id) | |
1114 | { | |
1115 | int ret, i; | |
1116 | struct bb_info *bitbang; | |
1117 | struct sh_eth_private *mdp = netdev_priv(ndev); | |
1118 | ||
1119 | /* create bit control struct for PHY */ | |
1120 | bitbang = kzalloc(sizeof(struct bb_info), GFP_KERNEL); | |
1121 | if (!bitbang) { | |
1122 | ret = -ENOMEM; | |
1123 | goto out; | |
1124 | } | |
1125 | ||
1126 | /* bitbang init */ | |
1127 | bitbang->addr = ndev->base_addr + PIR; | |
1128 | bitbang->mdi_msk = 0x08; | |
1129 | bitbang->mdo_msk = 0x04; | |
1130 | bitbang->mmd_msk = 0x02;/* MMD */ | |
1131 | bitbang->mdc_msk = 0x01; | |
1132 | bitbang->ctrl.ops = &bb_ops; | |
1133 | ||
1134 | /* MII contorller setting */ | |
1135 | mdp->mii_bus = alloc_mdio_bitbang(&bitbang->ctrl); | |
1136 | if (!mdp->mii_bus) { | |
1137 | ret = -ENOMEM; | |
1138 | goto out_free_bitbang; | |
1139 | } | |
1140 | ||
1141 | /* Hook up MII support for ethtool */ | |
1142 | mdp->mii_bus->name = "sh_mii"; | |
1143 | mdp->mii_bus->dev = &ndev->dev; | |
0caa1166 | 1144 | mdp->mii_bus->id[0] = id; |
86a74ff2 NI |
1145 | |
1146 | /* PHY IRQ */ | |
1147 | mdp->mii_bus->irq = kmalloc(sizeof(int)*PHY_MAX_ADDR, GFP_KERNEL); | |
1148 | if (!mdp->mii_bus->irq) { | |
1149 | ret = -ENOMEM; | |
1150 | goto out_free_bus; | |
1151 | } | |
1152 | ||
1153 | for (i = 0; i < PHY_MAX_ADDR; i++) | |
1154 | mdp->mii_bus->irq[i] = PHY_POLL; | |
1155 | ||
1156 | /* regist mdio bus */ | |
1157 | ret = mdiobus_register(mdp->mii_bus); | |
1158 | if (ret) | |
1159 | goto out_free_irq; | |
1160 | ||
1161 | dev_set_drvdata(&ndev->dev, mdp->mii_bus); | |
1162 | ||
1163 | return 0; | |
1164 | ||
1165 | out_free_irq: | |
1166 | kfree(mdp->mii_bus->irq); | |
1167 | ||
1168 | out_free_bus: | |
1169 | kfree(mdp->mii_bus); | |
1170 | ||
1171 | out_free_bitbang: | |
1172 | kfree(bitbang); | |
1173 | ||
1174 | out: | |
1175 | return ret; | |
1176 | } | |
1177 | ||
1178 | static int sh_eth_drv_probe(struct platform_device *pdev) | |
1179 | { | |
1180 | int ret, i, devno = 0; | |
1181 | struct resource *res; | |
1182 | struct net_device *ndev = NULL; | |
1183 | struct sh_eth_private *mdp; | |
71557a37 | 1184 | struct sh_eth_plat_data *pd; |
86a74ff2 NI |
1185 | |
1186 | /* get base addr */ | |
1187 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
1188 | if (unlikely(res == NULL)) { | |
1189 | dev_err(&pdev->dev, "invalid resource\n"); | |
1190 | ret = -EINVAL; | |
1191 | goto out; | |
1192 | } | |
1193 | ||
1194 | ndev = alloc_etherdev(sizeof(struct sh_eth_private)); | |
1195 | if (!ndev) { | |
1196 | printk(KERN_ERR "%s: could not allocate device.\n", CARDNAME); | |
1197 | ret = -ENOMEM; | |
1198 | goto out; | |
1199 | } | |
1200 | ||
1201 | /* The sh Ether-specific entries in the device structure. */ | |
1202 | ndev->base_addr = res->start; | |
1203 | devno = pdev->id; | |
1204 | if (devno < 0) | |
1205 | devno = 0; | |
1206 | ||
1207 | ndev->dma = -1; | |
1208 | ndev->irq = platform_get_irq(pdev, 0); | |
1209 | if (ndev->irq < 0) { | |
1210 | ret = -ENODEV; | |
1211 | goto out_release; | |
1212 | } | |
1213 | ||
1214 | SET_NETDEV_DEV(ndev, &pdev->dev); | |
1215 | ||
1216 | /* Fill in the fields of the device structure with ethernet values. */ | |
1217 | ether_setup(ndev); | |
1218 | ||
1219 | mdp = netdev_priv(ndev); | |
1220 | spin_lock_init(&mdp->lock); | |
1221 | ||
71557a37 | 1222 | pd = (struct sh_eth_plat_data *)(pdev->dev.platform_data); |
86a74ff2 | 1223 | /* get PHY ID */ |
71557a37 YS |
1224 | mdp->phy_id = pd->phy; |
1225 | /* EDMAC endian */ | |
1226 | mdp->edmac_endian = pd->edmac_endian; | |
86a74ff2 NI |
1227 | |
1228 | /* set function */ | |
1229 | ndev->open = sh_eth_open; | |
1230 | ndev->hard_start_xmit = sh_eth_start_xmit; | |
1231 | ndev->stop = sh_eth_close; | |
1232 | ndev->get_stats = sh_eth_get_stats; | |
1233 | ndev->set_multicast_list = sh_eth_set_multicast_list; | |
1234 | ndev->do_ioctl = sh_eth_do_ioctl; | |
1235 | ndev->tx_timeout = sh_eth_tx_timeout; | |
1236 | ndev->watchdog_timeo = TX_TIMEOUT; | |
1237 | ||
1238 | mdp->post_rx = POST_RX >> (devno << 1); | |
1239 | mdp->post_fw = POST_FW >> (devno << 1); | |
1240 | ||
1241 | /* read and set MAC address */ | |
1242 | read_mac_address(ndev); | |
1243 | ||
1244 | /* First device only init */ | |
1245 | if (!devno) { | |
71557a37 | 1246 | #if defined(ARSTR) |
86a74ff2 | 1247 | /* reset device */ |
b0ca2a21 | 1248 | ctrl_outl(ARSTR_ARSTR, ARSTR); |
86a74ff2 | 1249 | mdelay(1); |
71557a37 | 1250 | #endif |
86a74ff2 | 1251 | |
71557a37 | 1252 | #if defined(SH_TSU_ADDR) |
86a74ff2 NI |
1253 | /* TSU init (Init only)*/ |
1254 | sh_eth_tsu_init(SH_TSU_ADDR); | |
71557a37 | 1255 | #endif |
86a74ff2 NI |
1256 | } |
1257 | ||
1258 | /* network device register */ | |
1259 | ret = register_netdev(ndev); | |
1260 | if (ret) | |
1261 | goto out_release; | |
1262 | ||
1263 | /* mdio bus init */ | |
1264 | ret = sh_mdio_init(ndev, pdev->id); | |
1265 | if (ret) | |
1266 | goto out_unregister; | |
1267 | ||
1268 | /* pritnt device infomation */ | |
1269 | printk(KERN_INFO "%s: %s at 0x%x, ", | |
1270 | ndev->name, CARDNAME, (u32) ndev->base_addr); | |
1271 | ||
1272 | for (i = 0; i < 5; i++) | |
71557a37 YS |
1273 | printk("%02X:", ndev->dev_addr[i]); |
1274 | printk("%02X, IRQ %d.\n", ndev->dev_addr[i], ndev->irq); | |
86a74ff2 NI |
1275 | |
1276 | platform_set_drvdata(pdev, ndev); | |
1277 | ||
1278 | return ret; | |
1279 | ||
1280 | out_unregister: | |
1281 | unregister_netdev(ndev); | |
1282 | ||
1283 | out_release: | |
1284 | /* net_dev free */ | |
1285 | if (ndev) | |
1286 | free_netdev(ndev); | |
1287 | ||
1288 | out: | |
1289 | return ret; | |
1290 | } | |
1291 | ||
1292 | static int sh_eth_drv_remove(struct platform_device *pdev) | |
1293 | { | |
1294 | struct net_device *ndev = platform_get_drvdata(pdev); | |
1295 | ||
1296 | sh_mdio_release(ndev); | |
1297 | unregister_netdev(ndev); | |
1298 | flush_scheduled_work(); | |
1299 | ||
1300 | free_netdev(ndev); | |
1301 | platform_set_drvdata(pdev, NULL); | |
1302 | ||
1303 | return 0; | |
1304 | } | |
1305 | ||
1306 | static struct platform_driver sh_eth_driver = { | |
1307 | .probe = sh_eth_drv_probe, | |
1308 | .remove = sh_eth_drv_remove, | |
1309 | .driver = { | |
1310 | .name = CARDNAME, | |
1311 | }, | |
1312 | }; | |
1313 | ||
1314 | static int __init sh_eth_init(void) | |
1315 | { | |
1316 | return platform_driver_register(&sh_eth_driver); | |
1317 | } | |
1318 | ||
1319 | static void __exit sh_eth_cleanup(void) | |
1320 | { | |
1321 | platform_driver_unregister(&sh_eth_driver); | |
1322 | } | |
1323 | ||
1324 | module_init(sh_eth_init); | |
1325 | module_exit(sh_eth_cleanup); | |
1326 | ||
1327 | MODULE_AUTHOR("Nobuhiro Iwamatsu, Yoshihiro Shimoda"); | |
1328 | MODULE_DESCRIPTION("Renesas SuperH Ethernet driver"); | |
1329 | MODULE_LICENSE("GPL v2"); |