Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * Fast Ethernet Controller (FEC) driver for Motorola MPC8xx. | |
3 | * Copyright (c) 1997 Dan Malek (dmalek@jlc.net) | |
4 | * | |
7dd6a2aa | 5 | * Right now, I am very wasteful with the buffers. I allocate memory |
1da177e4 LT |
6 | * pages and then divide them into 2K frame buffers. This way I know I |
7 | * have buffers large enough to hold one frame within one buffer descriptor. | |
8 | * Once I get this working, I will use 64 or 128 byte CPM buffers, which | |
9 | * will be much more memory efficient and will easily handle lots of | |
10 | * small packets. | |
11 | * | |
12 | * Much better multiple PHY support by Magnus Damm. | |
13 | * Copyright (c) 2000 Ericsson Radio Systems AB. | |
14 | * | |
562d2f8c GU |
15 | * Support for FEC controller of ColdFire processors. |
16 | * Copyright (c) 2001-2005 Greg Ungerer (gerg@snapgear.com) | |
7dd6a2aa GU |
17 | * |
18 | * Bug fixes and cleanup by Philippe De Muyter (phdm@macqel.be) | |
677177c5 | 19 | * Copyright (c) 2004-2006 Macq Electronique SA. |
b5680e0b | 20 | * |
230dec61 | 21 | * Copyright (C) 2010-2011 Freescale Semiconductor, Inc. |
1da177e4 LT |
22 | */ |
23 | ||
1da177e4 LT |
24 | #include <linux/module.h> |
25 | #include <linux/kernel.h> | |
26 | #include <linux/string.h> | |
8fff755e | 27 | #include <linux/pm_runtime.h> |
1da177e4 LT |
28 | #include <linux/ptrace.h> |
29 | #include <linux/errno.h> | |
30 | #include <linux/ioport.h> | |
31 | #include <linux/slab.h> | |
32 | #include <linux/interrupt.h> | |
1da177e4 LT |
33 | #include <linux/delay.h> |
34 | #include <linux/netdevice.h> | |
35 | #include <linux/etherdevice.h> | |
36 | #include <linux/skbuff.h> | |
4c09eed9 JB |
37 | #include <linux/in.h> |
38 | #include <linux/ip.h> | |
39 | #include <net/ip.h> | |
79f33912 | 40 | #include <net/tso.h> |
4c09eed9 JB |
41 | #include <linux/tcp.h> |
42 | #include <linux/udp.h> | |
43 | #include <linux/icmp.h> | |
1da177e4 LT |
44 | #include <linux/spinlock.h> |
45 | #include <linux/workqueue.h> | |
46 | #include <linux/bitops.h> | |
6f501b17 SH |
47 | #include <linux/io.h> |
48 | #include <linux/irq.h> | |
196719ec | 49 | #include <linux/clk.h> |
ead73183 | 50 | #include <linux/platform_device.h> |
7f854420 | 51 | #include <linux/mdio.h> |
e6b043d5 | 52 | #include <linux/phy.h> |
5eb32bd0 | 53 | #include <linux/fec.h> |
ca2cc333 SG |
54 | #include <linux/of.h> |
55 | #include <linux/of_device.h> | |
56 | #include <linux/of_gpio.h> | |
407066f8 | 57 | #include <linux/of_mdio.h> |
ca2cc333 | 58 | #include <linux/of_net.h> |
5fa9c0fe | 59 | #include <linux/regulator/consumer.h> |
cdffcf1b | 60 | #include <linux/if_vlan.h> |
a68ab98e | 61 | #include <linux/pinctrl/consumer.h> |
c259c132 | 62 | #include <linux/prefetch.h> |
1da177e4 | 63 | |
080853af | 64 | #include <asm/cacheflush.h> |
196719ec | 65 | |
1da177e4 | 66 | #include "fec.h" |
1da177e4 | 67 | |
772e42b0 | 68 | static void set_multicast_list(struct net_device *ndev); |
d851b47b | 69 | static void fec_enet_itr_coal_init(struct net_device *ndev); |
772e42b0 | 70 | |
b5680e0b SG |
71 | #define DRIVER_NAME "fec" |
72 | ||
4d494cdc FD |
73 | #define FEC_ENET_GET_QUQUE(_x) ((_x == 0) ? 1 : ((_x == 1) ? 2 : 0)) |
74 | ||
baa70a5c FL |
75 | /* Pause frame feild and FIFO threshold */ |
76 | #define FEC_ENET_FCE (1 << 5) | |
77 | #define FEC_ENET_RSEM_V 0x84 | |
78 | #define FEC_ENET_RSFL_V 16 | |
79 | #define FEC_ENET_RAEM_V 0x8 | |
80 | #define FEC_ENET_RAFL_V 0x8 | |
81 | #define FEC_ENET_OPD_V 0xFFF0 | |
8fff755e | 82 | #define FEC_MDIO_PM_TIMEOUT 100 /* ms */ |
baa70a5c | 83 | |
b5680e0b SG |
84 | static struct platform_device_id fec_devtype[] = { |
85 | { | |
0ca1e290 | 86 | /* keep it for coldfire */ |
b5680e0b SG |
87 | .name = DRIVER_NAME, |
88 | .driver_data = 0, | |
0ca1e290 SG |
89 | }, { |
90 | .name = "imx25-fec", | |
18803495 | 91 | .driver_data = FEC_QUIRK_USE_GASKET | FEC_QUIRK_HAS_RACC, |
0ca1e290 SG |
92 | }, { |
93 | .name = "imx27-fec", | |
18803495 | 94 | .driver_data = FEC_QUIRK_HAS_RACC, |
b5680e0b SG |
95 | }, { |
96 | .name = "imx28-fec", | |
3d125f9c | 97 | .driver_data = FEC_QUIRK_ENET_MAC | FEC_QUIRK_SWAP_FRAME | |
18803495 | 98 | FEC_QUIRK_SINGLE_MDIO | FEC_QUIRK_HAS_RACC, |
230dec61 SG |
99 | }, { |
100 | .name = "imx6q-fec", | |
ff43da86 | 101 | .driver_data = FEC_QUIRK_ENET_MAC | FEC_QUIRK_HAS_GBIT | |
cdffcf1b | 102 | FEC_QUIRK_HAS_BUFDESC_EX | FEC_QUIRK_HAS_CSUM | |
18803495 GU |
103 | FEC_QUIRK_HAS_VLAN | FEC_QUIRK_ERR006358 | |
104 | FEC_QUIRK_HAS_RACC, | |
ca7c4a45 | 105 | }, { |
36803542 | 106 | .name = "mvf600-fec", |
18803495 | 107 | .driver_data = FEC_QUIRK_ENET_MAC | FEC_QUIRK_HAS_RACC, |
95a77470 FD |
108 | }, { |
109 | .name = "imx6sx-fec", | |
110 | .driver_data = FEC_QUIRK_ENET_MAC | FEC_QUIRK_HAS_GBIT | | |
111 | FEC_QUIRK_HAS_BUFDESC_EX | FEC_QUIRK_HAS_CSUM | | |
f88c7ede | 112 | FEC_QUIRK_HAS_VLAN | FEC_QUIRK_HAS_AVB | |
18803495 GU |
113 | FEC_QUIRK_ERR007885 | FEC_QUIRK_BUG_CAPTURE | |
114 | FEC_QUIRK_HAS_RACC, | |
0ca1e290 SG |
115 | }, { |
116 | /* sentinel */ | |
117 | } | |
b5680e0b | 118 | }; |
0ca1e290 | 119 | MODULE_DEVICE_TABLE(platform, fec_devtype); |
b5680e0b | 120 | |
ca2cc333 | 121 | enum imx_fec_type { |
a7dd3219 | 122 | IMX25_FEC = 1, /* runs on i.mx25/50/53 */ |
ca2cc333 SG |
123 | IMX27_FEC, /* runs on i.mx27/35/51 */ |
124 | IMX28_FEC, | |
230dec61 | 125 | IMX6Q_FEC, |
36803542 | 126 | MVF600_FEC, |
ba593e00 | 127 | IMX6SX_FEC, |
ca2cc333 SG |
128 | }; |
129 | ||
130 | static const struct of_device_id fec_dt_ids[] = { | |
131 | { .compatible = "fsl,imx25-fec", .data = &fec_devtype[IMX25_FEC], }, | |
132 | { .compatible = "fsl,imx27-fec", .data = &fec_devtype[IMX27_FEC], }, | |
133 | { .compatible = "fsl,imx28-fec", .data = &fec_devtype[IMX28_FEC], }, | |
230dec61 | 134 | { .compatible = "fsl,imx6q-fec", .data = &fec_devtype[IMX6Q_FEC], }, |
36803542 | 135 | { .compatible = "fsl,mvf600-fec", .data = &fec_devtype[MVF600_FEC], }, |
ba593e00 | 136 | { .compatible = "fsl,imx6sx-fec", .data = &fec_devtype[IMX6SX_FEC], }, |
ca2cc333 SG |
137 | { /* sentinel */ } |
138 | }; | |
139 | MODULE_DEVICE_TABLE(of, fec_dt_ids); | |
140 | ||
49da97dc SG |
141 | static unsigned char macaddr[ETH_ALEN]; |
142 | module_param_array(macaddr, byte, NULL, 0); | |
143 | MODULE_PARM_DESC(macaddr, "FEC Ethernet MAC address"); | |
1da177e4 | 144 | |
49da97dc | 145 | #if defined(CONFIG_M5272) |
1da177e4 LT |
146 | /* |
147 | * Some hardware gets it MAC address out of local flash memory. | |
148 | * if this is non-zero then assume it is the address to get MAC from. | |
149 | */ | |
150 | #if defined(CONFIG_NETtel) | |
151 | #define FEC_FLASHMAC 0xf0006006 | |
152 | #elif defined(CONFIG_GILBARCONAP) || defined(CONFIG_SCALES) | |
153 | #define FEC_FLASHMAC 0xf0006000 | |
1da177e4 LT |
154 | #elif defined(CONFIG_CANCam) |
155 | #define FEC_FLASHMAC 0xf0020000 | |
7dd6a2aa GU |
156 | #elif defined (CONFIG_M5272C3) |
157 | #define FEC_FLASHMAC (0xffe04000 + 4) | |
158 | #elif defined(CONFIG_MOD5272) | |
a7dd3219 | 159 | #define FEC_FLASHMAC 0xffc0406b |
1da177e4 LT |
160 | #else |
161 | #define FEC_FLASHMAC 0 | |
162 | #endif | |
43be6366 | 163 | #endif /* CONFIG_M5272 */ |
ead73183 | 164 | |
cdffcf1b | 165 | /* The FEC stores dest/src/type/vlan, data, and checksum for receive packets. |
1da177e4 | 166 | */ |
cdffcf1b | 167 | #define PKT_MAXBUF_SIZE 1522 |
1da177e4 | 168 | #define PKT_MINBUF_SIZE 64 |
cdffcf1b | 169 | #define PKT_MAXBLR_SIZE 1536 |
1da177e4 | 170 | |
4c09eed9 JB |
171 | /* FEC receive acceleration */ |
172 | #define FEC_RACC_IPDIS (1 << 1) | |
173 | #define FEC_RACC_PRODIS (1 << 2) | |
174 | #define FEC_RACC_OPTIONS (FEC_RACC_IPDIS | FEC_RACC_PRODIS) | |
175 | ||
1da177e4 | 176 | /* |
6b265293 | 177 | * The 5270/5271/5280/5282/532x RX control register also contains maximum frame |
1da177e4 LT |
178 | * size bits. Other FEC hardware does not, so we need to take that into |
179 | * account when setting it. | |
180 | */ | |
562d2f8c | 181 | #if defined(CONFIG_M523x) || defined(CONFIG_M527x) || defined(CONFIG_M528x) || \ |
085e79ed | 182 | defined(CONFIG_M520x) || defined(CONFIG_M532x) || defined(CONFIG_ARM) |
1da177e4 LT |
183 | #define OPT_FRAME_SIZE (PKT_MAXBUF_SIZE << 16) |
184 | #else | |
185 | #define OPT_FRAME_SIZE 0 | |
186 | #endif | |
187 | ||
e6b043d5 BW |
188 | /* FEC MII MMFR bits definition */ |
189 | #define FEC_MMFR_ST (1 << 30) | |
190 | #define FEC_MMFR_OP_READ (2 << 28) | |
191 | #define FEC_MMFR_OP_WRITE (1 << 28) | |
192 | #define FEC_MMFR_PA(v) ((v & 0x1f) << 23) | |
193 | #define FEC_MMFR_RA(v) ((v & 0x1f) << 18) | |
194 | #define FEC_MMFR_TA (2 << 16) | |
195 | #define FEC_MMFR_DATA(v) (v & 0xffff) | |
de40ed31 NA |
196 | /* FEC ECR bits definition */ |
197 | #define FEC_ECR_MAGICEN (1 << 2) | |
198 | #define FEC_ECR_SLEEP (1 << 3) | |
1da177e4 | 199 | |
c3b084c2 | 200 | #define FEC_MII_TIMEOUT 30000 /* us */ |
1da177e4 | 201 | |
22f6b860 SH |
202 | /* Transmitter timeout */ |
203 | #define TX_TIMEOUT (2 * HZ) | |
1da177e4 | 204 | |
baa70a5c FL |
205 | #define FEC_PAUSE_FLAG_AUTONEG 0x1 |
206 | #define FEC_PAUSE_FLAG_ENABLE 0x2 | |
de40ed31 NA |
207 | #define FEC_WOL_HAS_MAGIC_PACKET (0x1 << 0) |
208 | #define FEC_WOL_FLAG_ENABLE (0x1 << 1) | |
209 | #define FEC_WOL_FLAG_SLEEP_ON (0x1 << 2) | |
baa70a5c | 210 | |
1b7bde6d NA |
211 | #define COPYBREAK_DEFAULT 256 |
212 | ||
79f33912 NA |
213 | #define TSO_HEADER_SIZE 128 |
214 | /* Max number of allowed TCP segments for software TSO */ | |
215 | #define FEC_MAX_TSO_SEGS 100 | |
216 | #define FEC_MAX_SKB_DESCS (FEC_MAX_TSO_SEGS * 2 + MAX_SKB_FRAGS) | |
217 | ||
218 | #define IS_TSO_HEADER(txq, addr) \ | |
219 | ((addr >= txq->tso_hdrs_dma) && \ | |
7355f276 | 220 | (addr < txq->tso_hdrs_dma + txq->bd.ring_size * TSO_HEADER_SIZE)) |
79f33912 | 221 | |
e163cc97 LW |
222 | static int mii_cnt; |
223 | ||
7355f276 TK |
224 | static struct bufdesc *fec_enet_get_nextdesc(struct bufdesc *bdp, |
225 | struct bufdesc_prop *bd) | |
226 | { | |
227 | return (bdp >= bd->last) ? bd->base | |
228 | : (struct bufdesc *)(((unsigned)bdp) + bd->dsize); | |
229 | } | |
36e24e2e | 230 | |
7355f276 TK |
231 | static struct bufdesc *fec_enet_get_prevdesc(struct bufdesc *bdp, |
232 | struct bufdesc_prop *bd) | |
233 | { | |
234 | return (bdp <= bd->base) ? bd->last | |
235 | : (struct bufdesc *)(((unsigned)bdp) - bd->dsize); | |
ff43da86 FL |
236 | } |
237 | ||
7355f276 TK |
238 | static int fec_enet_get_bd_index(struct bufdesc *bdp, |
239 | struct bufdesc_prop *bd) | |
61a4427b | 240 | { |
7355f276 | 241 | return ((const char *)bdp - (const char *)bd->base) >> bd->dsize_log2; |
61a4427b NA |
242 | } |
243 | ||
7355f276 | 244 | static int fec_enet_get_free_txdesc_num(struct fec_enet_priv_tx_q *txq) |
6e909283 NA |
245 | { |
246 | int entries; | |
247 | ||
7355f276 TK |
248 | entries = (((const char *)txq->dirty_tx - |
249 | (const char *)txq->bd.cur) >> txq->bd.dsize_log2) - 1; | |
6e909283 | 250 | |
7355f276 | 251 | return entries >= 0 ? entries : entries + txq->bd.ring_size; |
6e909283 NA |
252 | } |
253 | ||
c20e599b | 254 | static void swap_buffer(void *bufaddr, int len) |
b5680e0b SG |
255 | { |
256 | int i; | |
257 | unsigned int *buf = bufaddr; | |
258 | ||
7b487d07 | 259 | for (i = 0; i < len; i += 4, buf++) |
e453789a | 260 | swab32s(buf); |
b5680e0b SG |
261 | } |
262 | ||
1310b544 LW |
263 | static void swap_buffer2(void *dst_buf, void *src_buf, int len) |
264 | { | |
265 | int i; | |
266 | unsigned int *src = src_buf; | |
267 | unsigned int *dst = dst_buf; | |
268 | ||
269 | for (i = 0; i < len; i += 4, src++, dst++) | |
270 | *dst = swab32p(src); | |
271 | } | |
272 | ||
344756f6 RK |
273 | static void fec_dump(struct net_device *ndev) |
274 | { | |
275 | struct fec_enet_private *fep = netdev_priv(ndev); | |
4d494cdc FD |
276 | struct bufdesc *bdp; |
277 | struct fec_enet_priv_tx_q *txq; | |
278 | int index = 0; | |
344756f6 RK |
279 | |
280 | netdev_info(ndev, "TX ring dump\n"); | |
281 | pr_info("Nr SC addr len SKB\n"); | |
282 | ||
4d494cdc | 283 | txq = fep->tx_queue[0]; |
7355f276 | 284 | bdp = txq->bd.base; |
4d494cdc | 285 | |
344756f6 | 286 | do { |
5cfa3039 | 287 | pr_info("%3u %c%c 0x%04x 0x%08x %4u %p\n", |
344756f6 | 288 | index, |
7355f276 | 289 | bdp == txq->bd.cur ? 'S' : ' ', |
4d494cdc | 290 | bdp == txq->dirty_tx ? 'H' : ' ', |
5cfa3039 JB |
291 | fec16_to_cpu(bdp->cbd_sc), |
292 | fec32_to_cpu(bdp->cbd_bufaddr), | |
293 | fec16_to_cpu(bdp->cbd_datlen), | |
4d494cdc | 294 | txq->tx_skbuff[index]); |
7355f276 | 295 | bdp = fec_enet_get_nextdesc(bdp, &txq->bd); |
344756f6 | 296 | index++; |
7355f276 | 297 | } while (bdp != txq->bd.base); |
344756f6 RK |
298 | } |
299 | ||
62a02c98 FD |
300 | static inline bool is_ipv4_pkt(struct sk_buff *skb) |
301 | { | |
302 | return skb->protocol == htons(ETH_P_IP) && ip_hdr(skb)->version == 4; | |
303 | } | |
304 | ||
4c09eed9 JB |
305 | static int |
306 | fec_enet_clear_csum(struct sk_buff *skb, struct net_device *ndev) | |
307 | { | |
308 | /* Only run for packets requiring a checksum. */ | |
309 | if (skb->ip_summed != CHECKSUM_PARTIAL) | |
310 | return 0; | |
311 | ||
312 | if (unlikely(skb_cow_head(skb, 0))) | |
313 | return -1; | |
314 | ||
62a02c98 FD |
315 | if (is_ipv4_pkt(skb)) |
316 | ip_hdr(skb)->check = 0; | |
4c09eed9 JB |
317 | *(__sum16 *)(skb->head + skb->csum_start + skb->csum_offset) = 0; |
318 | ||
319 | return 0; | |
320 | } | |
321 | ||
c4bc44c6 | 322 | static struct bufdesc * |
4d494cdc FD |
323 | fec_enet_txq_submit_frag_skb(struct fec_enet_priv_tx_q *txq, |
324 | struct sk_buff *skb, | |
325 | struct net_device *ndev) | |
1da177e4 | 326 | { |
c556167f | 327 | struct fec_enet_private *fep = netdev_priv(ndev); |
7355f276 | 328 | struct bufdesc *bdp = txq->bd.cur; |
6e909283 NA |
329 | struct bufdesc_ex *ebdp; |
330 | int nr_frags = skb_shinfo(skb)->nr_frags; | |
331 | int frag, frag_len; | |
332 | unsigned short status; | |
333 | unsigned int estatus = 0; | |
334 | skb_frag_t *this_frag; | |
de5fb0a0 | 335 | unsigned int index; |
6e909283 | 336 | void *bufaddr; |
d6bf3143 | 337 | dma_addr_t addr; |
6e909283 | 338 | int i; |
1da177e4 | 339 | |
6e909283 NA |
340 | for (frag = 0; frag < nr_frags; frag++) { |
341 | this_frag = &skb_shinfo(skb)->frags[frag]; | |
7355f276 | 342 | bdp = fec_enet_get_nextdesc(bdp, &txq->bd); |
6e909283 NA |
343 | ebdp = (struct bufdesc_ex *)bdp; |
344 | ||
5cfa3039 | 345 | status = fec16_to_cpu(bdp->cbd_sc); |
6e909283 NA |
346 | status &= ~BD_ENET_TX_STATS; |
347 | status |= (BD_ENET_TX_TC | BD_ENET_TX_READY); | |
348 | frag_len = skb_shinfo(skb)->frags[frag].size; | |
349 | ||
350 | /* Handle the last BD specially */ | |
351 | if (frag == nr_frags - 1) { | |
352 | status |= (BD_ENET_TX_INTR | BD_ENET_TX_LAST); | |
353 | if (fep->bufdesc_ex) { | |
354 | estatus |= BD_ENET_TX_INT; | |
355 | if (unlikely(skb_shinfo(skb)->tx_flags & | |
356 | SKBTX_HW_TSTAMP && fep->hwts_tx_en)) | |
357 | estatus |= BD_ENET_TX_TS; | |
358 | } | |
359 | } | |
360 | ||
361 | if (fep->bufdesc_ex) { | |
6b7e4008 | 362 | if (fep->quirks & FEC_QUIRK_HAS_AVB) |
53bb20d1 | 363 | estatus |= FEC_TX_BD_FTYPE(txq->bd.qid); |
6e909283 NA |
364 | if (skb->ip_summed == CHECKSUM_PARTIAL) |
365 | estatus |= BD_ENET_TX_PINS | BD_ENET_TX_IINS; | |
366 | ebdp->cbd_bdu = 0; | |
5cfa3039 | 367 | ebdp->cbd_esc = cpu_to_fec32(estatus); |
6e909283 NA |
368 | } |
369 | ||
370 | bufaddr = page_address(this_frag->page.p) + this_frag->page_offset; | |
371 | ||
7355f276 | 372 | index = fec_enet_get_bd_index(bdp, &txq->bd); |
41ef84ce | 373 | if (((unsigned long) bufaddr) & fep->tx_align || |
6b7e4008 | 374 | fep->quirks & FEC_QUIRK_SWAP_FRAME) { |
4d494cdc FD |
375 | memcpy(txq->tx_bounce[index], bufaddr, frag_len); |
376 | bufaddr = txq->tx_bounce[index]; | |
6e909283 | 377 | |
6b7e4008 | 378 | if (fep->quirks & FEC_QUIRK_SWAP_FRAME) |
6e909283 NA |
379 | swap_buffer(bufaddr, frag_len); |
380 | } | |
381 | ||
d6bf3143 RK |
382 | addr = dma_map_single(&fep->pdev->dev, bufaddr, frag_len, |
383 | DMA_TO_DEVICE); | |
384 | if (dma_mapping_error(&fep->pdev->dev, addr)) { | |
6e909283 NA |
385 | if (net_ratelimit()) |
386 | netdev_err(ndev, "Tx DMA memory map failed\n"); | |
387 | goto dma_mapping_error; | |
388 | } | |
389 | ||
5cfa3039 JB |
390 | bdp->cbd_bufaddr = cpu_to_fec32(addr); |
391 | bdp->cbd_datlen = cpu_to_fec16(frag_len); | |
be293467 TK |
392 | /* Make sure the updates to rest of the descriptor are |
393 | * performed before transferring ownership. | |
394 | */ | |
395 | wmb(); | |
5cfa3039 | 396 | bdp->cbd_sc = cpu_to_fec16(status); |
6e909283 NA |
397 | } |
398 | ||
c4bc44c6 | 399 | return bdp; |
6e909283 | 400 | dma_mapping_error: |
7355f276 | 401 | bdp = txq->bd.cur; |
6e909283 | 402 | for (i = 0; i < frag; i++) { |
7355f276 | 403 | bdp = fec_enet_get_nextdesc(bdp, &txq->bd); |
5cfa3039 JB |
404 | dma_unmap_single(&fep->pdev->dev, fec32_to_cpu(bdp->cbd_bufaddr), |
405 | fec16_to_cpu(bdp->cbd_datlen), DMA_TO_DEVICE); | |
6e909283 | 406 | } |
c4bc44c6 | 407 | return ERR_PTR(-ENOMEM); |
6e909283 | 408 | } |
1da177e4 | 409 | |
4d494cdc FD |
410 | static int fec_enet_txq_submit_skb(struct fec_enet_priv_tx_q *txq, |
411 | struct sk_buff *skb, struct net_device *ndev) | |
6e909283 NA |
412 | { |
413 | struct fec_enet_private *fep = netdev_priv(ndev); | |
6e909283 NA |
414 | int nr_frags = skb_shinfo(skb)->nr_frags; |
415 | struct bufdesc *bdp, *last_bdp; | |
416 | void *bufaddr; | |
d6bf3143 | 417 | dma_addr_t addr; |
6e909283 NA |
418 | unsigned short status; |
419 | unsigned short buflen; | |
420 | unsigned int estatus = 0; | |
421 | unsigned int index; | |
79f33912 | 422 | int entries_free; |
22f6b860 | 423 | |
7355f276 | 424 | entries_free = fec_enet_get_free_txdesc_num(txq); |
79f33912 NA |
425 | if (entries_free < MAX_SKB_FRAGS + 1) { |
426 | dev_kfree_skb_any(skb); | |
427 | if (net_ratelimit()) | |
428 | netdev_err(ndev, "NOT enough BD for SG!\n"); | |
429 | return NETDEV_TX_OK; | |
430 | } | |
431 | ||
4c09eed9 JB |
432 | /* Protocol checksum off-load for TCP and UDP. */ |
433 | if (fec_enet_clear_csum(skb, ndev)) { | |
8e7e6874 | 434 | dev_kfree_skb_any(skb); |
4c09eed9 JB |
435 | return NETDEV_TX_OK; |
436 | } | |
437 | ||
6e909283 | 438 | /* Fill in a Tx ring entry */ |
7355f276 | 439 | bdp = txq->bd.cur; |
c4bc44c6 | 440 | last_bdp = bdp; |
5cfa3039 | 441 | status = fec16_to_cpu(bdp->cbd_sc); |
0e702ab3 | 442 | status &= ~BD_ENET_TX_STATS; |
1da177e4 | 443 | |
22f6b860 | 444 | /* Set buffer length and buffer pointer */ |
9555b31e | 445 | bufaddr = skb->data; |
6e909283 | 446 | buflen = skb_headlen(skb); |
1da177e4 | 447 | |
7355f276 | 448 | index = fec_enet_get_bd_index(bdp, &txq->bd); |
41ef84ce | 449 | if (((unsigned long) bufaddr) & fep->tx_align || |
6b7e4008 | 450 | fep->quirks & FEC_QUIRK_SWAP_FRAME) { |
4d494cdc FD |
451 | memcpy(txq->tx_bounce[index], skb->data, buflen); |
452 | bufaddr = txq->tx_bounce[index]; | |
1da177e4 | 453 | |
6b7e4008 | 454 | if (fep->quirks & FEC_QUIRK_SWAP_FRAME) |
6e909283 NA |
455 | swap_buffer(bufaddr, buflen); |
456 | } | |
6aa20a22 | 457 | |
d6bf3143 RK |
458 | /* Push the data cache so the CPM does not get stale memory data. */ |
459 | addr = dma_map_single(&fep->pdev->dev, bufaddr, buflen, DMA_TO_DEVICE); | |
460 | if (dma_mapping_error(&fep->pdev->dev, addr)) { | |
d842a31f DFB |
461 | dev_kfree_skb_any(skb); |
462 | if (net_ratelimit()) | |
463 | netdev_err(ndev, "Tx DMA memory map failed\n"); | |
464 | return NETDEV_TX_OK; | |
465 | } | |
1da177e4 | 466 | |
6e909283 | 467 | if (nr_frags) { |
c4bc44c6 | 468 | last_bdp = fec_enet_txq_submit_frag_skb(txq, skb, ndev); |
fc75ba51 TK |
469 | if (IS_ERR(last_bdp)) { |
470 | dma_unmap_single(&fep->pdev->dev, addr, | |
471 | buflen, DMA_TO_DEVICE); | |
472 | dev_kfree_skb_any(skb); | |
c4bc44c6 | 473 | return NETDEV_TX_OK; |
fc75ba51 | 474 | } |
6e909283 NA |
475 | } else { |
476 | status |= (BD_ENET_TX_INTR | BD_ENET_TX_LAST); | |
477 | if (fep->bufdesc_ex) { | |
478 | estatus = BD_ENET_TX_INT; | |
479 | if (unlikely(skb_shinfo(skb)->tx_flags & | |
480 | SKBTX_HW_TSTAMP && fep->hwts_tx_en)) | |
481 | estatus |= BD_ENET_TX_TS; | |
482 | } | |
483 | } | |
fc75ba51 TK |
484 | bdp->cbd_bufaddr = cpu_to_fec32(addr); |
485 | bdp->cbd_datlen = cpu_to_fec16(buflen); | |
6e909283 | 486 | |
ff43da86 FL |
487 | if (fep->bufdesc_ex) { |
488 | ||
489 | struct bufdesc_ex *ebdp = (struct bufdesc_ex *)bdp; | |
6e909283 | 490 | |
ff43da86 | 491 | if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP && |
6e909283 | 492 | fep->hwts_tx_en)) |
6605b730 | 493 | skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS; |
4c09eed9 | 494 | |
6b7e4008 | 495 | if (fep->quirks & FEC_QUIRK_HAS_AVB) |
53bb20d1 | 496 | estatus |= FEC_TX_BD_FTYPE(txq->bd.qid); |
befe8213 | 497 | |
6e909283 NA |
498 | if (skb->ip_summed == CHECKSUM_PARTIAL) |
499 | estatus |= BD_ENET_TX_PINS | BD_ENET_TX_IINS; | |
500 | ||
501 | ebdp->cbd_bdu = 0; | |
5cfa3039 | 502 | ebdp->cbd_esc = cpu_to_fec32(estatus); |
6605b730 | 503 | } |
03191656 | 504 | |
7355f276 | 505 | index = fec_enet_get_bd_index(last_bdp, &txq->bd); |
6e909283 | 506 | /* Save skb pointer */ |
4d494cdc | 507 | txq->tx_skbuff[index] = skb; |
6e909283 | 508 | |
be293467 TK |
509 | /* Make sure the updates to rest of the descriptor are performed before |
510 | * transferring ownership. | |
511 | */ | |
512 | wmb(); | |
6e909283 | 513 | |
fb8ef788 DFB |
514 | /* Send it on its way. Tell FEC it's ready, interrupt when done, |
515 | * it's the last BD of the frame, and to put the CRC on the end. | |
516 | */ | |
6e909283 | 517 | status |= (BD_ENET_TX_READY | BD_ENET_TX_TC); |
5cfa3039 | 518 | bdp->cbd_sc = cpu_to_fec16(status); |
fb8ef788 | 519 | |
22f6b860 | 520 | /* If this was the last BD in the ring, start at the beginning again. */ |
7355f276 | 521 | bdp = fec_enet_get_nextdesc(last_bdp, &txq->bd); |
1da177e4 | 522 | |
7a2a8451 ED |
523 | skb_tx_timestamp(skb); |
524 | ||
c4bc44c6 | 525 | /* Make sure the update to bdp and tx_skbuff are performed before |
7355f276 | 526 | * txq->bd.cur. |
c4bc44c6 KH |
527 | */ |
528 | wmb(); | |
7355f276 | 529 | txq->bd.cur = bdp; |
de5fb0a0 | 530 | |
de5fb0a0 | 531 | /* Trigger transmission start */ |
53bb20d1 | 532 | writel(0, txq->bd.reg_desc_active); |
1da177e4 | 533 | |
6e909283 | 534 | return 0; |
1da177e4 LT |
535 | } |
536 | ||
79f33912 | 537 | static int |
4d494cdc FD |
538 | fec_enet_txq_put_data_tso(struct fec_enet_priv_tx_q *txq, struct sk_buff *skb, |
539 | struct net_device *ndev, | |
540 | struct bufdesc *bdp, int index, char *data, | |
541 | int size, bool last_tcp, bool is_last) | |
61a4427b NA |
542 | { |
543 | struct fec_enet_private *fep = netdev_priv(ndev); | |
61cd2ebb | 544 | struct bufdesc_ex *ebdp = container_of(bdp, struct bufdesc_ex, desc); |
79f33912 NA |
545 | unsigned short status; |
546 | unsigned int estatus = 0; | |
d6bf3143 | 547 | dma_addr_t addr; |
61a4427b | 548 | |
5cfa3039 | 549 | status = fec16_to_cpu(bdp->cbd_sc); |
79f33912 | 550 | status &= ~BD_ENET_TX_STATS; |
61a4427b | 551 | |
79f33912 | 552 | status |= (BD_ENET_TX_TC | BD_ENET_TX_READY); |
79f33912 | 553 | |
41ef84ce | 554 | if (((unsigned long) data) & fep->tx_align || |
6b7e4008 | 555 | fep->quirks & FEC_QUIRK_SWAP_FRAME) { |
4d494cdc FD |
556 | memcpy(txq->tx_bounce[index], data, size); |
557 | data = txq->tx_bounce[index]; | |
79f33912 | 558 | |
6b7e4008 | 559 | if (fep->quirks & FEC_QUIRK_SWAP_FRAME) |
79f33912 NA |
560 | swap_buffer(data, size); |
561 | } | |
562 | ||
d6bf3143 RK |
563 | addr = dma_map_single(&fep->pdev->dev, data, size, DMA_TO_DEVICE); |
564 | if (dma_mapping_error(&fep->pdev->dev, addr)) { | |
79f33912 | 565 | dev_kfree_skb_any(skb); |
6e909283 | 566 | if (net_ratelimit()) |
79f33912 | 567 | netdev_err(ndev, "Tx DMA memory map failed\n"); |
61a4427b NA |
568 | return NETDEV_TX_BUSY; |
569 | } | |
570 | ||
5cfa3039 JB |
571 | bdp->cbd_datlen = cpu_to_fec16(size); |
572 | bdp->cbd_bufaddr = cpu_to_fec32(addr); | |
d6bf3143 | 573 | |
79f33912 | 574 | if (fep->bufdesc_ex) { |
6b7e4008 | 575 | if (fep->quirks & FEC_QUIRK_HAS_AVB) |
53bb20d1 | 576 | estatus |= FEC_TX_BD_FTYPE(txq->bd.qid); |
79f33912 NA |
577 | if (skb->ip_summed == CHECKSUM_PARTIAL) |
578 | estatus |= BD_ENET_TX_PINS | BD_ENET_TX_IINS; | |
579 | ebdp->cbd_bdu = 0; | |
5cfa3039 | 580 | ebdp->cbd_esc = cpu_to_fec32(estatus); |
79f33912 NA |
581 | } |
582 | ||
583 | /* Handle the last BD specially */ | |
584 | if (last_tcp) | |
585 | status |= (BD_ENET_TX_LAST | BD_ENET_TX_TC); | |
586 | if (is_last) { | |
587 | status |= BD_ENET_TX_INTR; | |
588 | if (fep->bufdesc_ex) | |
5cfa3039 | 589 | ebdp->cbd_esc |= cpu_to_fec32(BD_ENET_TX_INT); |
79f33912 NA |
590 | } |
591 | ||
5cfa3039 | 592 | bdp->cbd_sc = cpu_to_fec16(status); |
79f33912 NA |
593 | |
594 | return 0; | |
595 | } | |
596 | ||
597 | static int | |
4d494cdc FD |
598 | fec_enet_txq_put_hdr_tso(struct fec_enet_priv_tx_q *txq, |
599 | struct sk_buff *skb, struct net_device *ndev, | |
600 | struct bufdesc *bdp, int index) | |
79f33912 NA |
601 | { |
602 | struct fec_enet_private *fep = netdev_priv(ndev); | |
79f33912 | 603 | int hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
61cd2ebb | 604 | struct bufdesc_ex *ebdp = container_of(bdp, struct bufdesc_ex, desc); |
79f33912 NA |
605 | void *bufaddr; |
606 | unsigned long dmabuf; | |
607 | unsigned short status; | |
608 | unsigned int estatus = 0; | |
609 | ||
5cfa3039 | 610 | status = fec16_to_cpu(bdp->cbd_sc); |
79f33912 NA |
611 | status &= ~BD_ENET_TX_STATS; |
612 | status |= (BD_ENET_TX_TC | BD_ENET_TX_READY); | |
613 | ||
4d494cdc FD |
614 | bufaddr = txq->tso_hdrs + index * TSO_HEADER_SIZE; |
615 | dmabuf = txq->tso_hdrs_dma + index * TSO_HEADER_SIZE; | |
41ef84ce | 616 | if (((unsigned long)bufaddr) & fep->tx_align || |
6b7e4008 | 617 | fep->quirks & FEC_QUIRK_SWAP_FRAME) { |
4d494cdc FD |
618 | memcpy(txq->tx_bounce[index], skb->data, hdr_len); |
619 | bufaddr = txq->tx_bounce[index]; | |
79f33912 | 620 | |
6b7e4008 | 621 | if (fep->quirks & FEC_QUIRK_SWAP_FRAME) |
79f33912 NA |
622 | swap_buffer(bufaddr, hdr_len); |
623 | ||
624 | dmabuf = dma_map_single(&fep->pdev->dev, bufaddr, | |
625 | hdr_len, DMA_TO_DEVICE); | |
626 | if (dma_mapping_error(&fep->pdev->dev, dmabuf)) { | |
627 | dev_kfree_skb_any(skb); | |
628 | if (net_ratelimit()) | |
629 | netdev_err(ndev, "Tx DMA memory map failed\n"); | |
630 | return NETDEV_TX_BUSY; | |
631 | } | |
632 | } | |
633 | ||
5cfa3039 JB |
634 | bdp->cbd_bufaddr = cpu_to_fec32(dmabuf); |
635 | bdp->cbd_datlen = cpu_to_fec16(hdr_len); | |
79f33912 NA |
636 | |
637 | if (fep->bufdesc_ex) { | |
6b7e4008 | 638 | if (fep->quirks & FEC_QUIRK_HAS_AVB) |
53bb20d1 | 639 | estatus |= FEC_TX_BD_FTYPE(txq->bd.qid); |
79f33912 NA |
640 | if (skb->ip_summed == CHECKSUM_PARTIAL) |
641 | estatus |= BD_ENET_TX_PINS | BD_ENET_TX_IINS; | |
642 | ebdp->cbd_bdu = 0; | |
5cfa3039 | 643 | ebdp->cbd_esc = cpu_to_fec32(estatus); |
79f33912 NA |
644 | } |
645 | ||
5cfa3039 | 646 | bdp->cbd_sc = cpu_to_fec16(status); |
79f33912 NA |
647 | |
648 | return 0; | |
649 | } | |
650 | ||
4d494cdc FD |
651 | static int fec_enet_txq_submit_tso(struct fec_enet_priv_tx_q *txq, |
652 | struct sk_buff *skb, | |
653 | struct net_device *ndev) | |
79f33912 NA |
654 | { |
655 | struct fec_enet_private *fep = netdev_priv(ndev); | |
656 | int hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); | |
657 | int total_len, data_left; | |
7355f276 | 658 | struct bufdesc *bdp = txq->bd.cur; |
79f33912 NA |
659 | struct tso_t tso; |
660 | unsigned int index = 0; | |
661 | int ret; | |
662 | ||
7355f276 | 663 | if (tso_count_descs(skb) >= fec_enet_get_free_txdesc_num(txq)) { |
79f33912 NA |
664 | dev_kfree_skb_any(skb); |
665 | if (net_ratelimit()) | |
666 | netdev_err(ndev, "NOT enough BD for TSO!\n"); | |
667 | return NETDEV_TX_OK; | |
668 | } | |
669 | ||
670 | /* Protocol checksum off-load for TCP and UDP. */ | |
671 | if (fec_enet_clear_csum(skb, ndev)) { | |
672 | dev_kfree_skb_any(skb); | |
673 | return NETDEV_TX_OK; | |
674 | } | |
675 | ||
676 | /* Initialize the TSO handler, and prepare the first payload */ | |
677 | tso_start(skb, &tso); | |
678 | ||
679 | total_len = skb->len - hdr_len; | |
680 | while (total_len > 0) { | |
681 | char *hdr; | |
682 | ||
7355f276 | 683 | index = fec_enet_get_bd_index(bdp, &txq->bd); |
79f33912 NA |
684 | data_left = min_t(int, skb_shinfo(skb)->gso_size, total_len); |
685 | total_len -= data_left; | |
686 | ||
687 | /* prepare packet headers: MAC + IP + TCP */ | |
4d494cdc | 688 | hdr = txq->tso_hdrs + index * TSO_HEADER_SIZE; |
79f33912 | 689 | tso_build_hdr(skb, hdr, &tso, data_left, total_len == 0); |
4d494cdc | 690 | ret = fec_enet_txq_put_hdr_tso(txq, skb, ndev, bdp, index); |
79f33912 NA |
691 | if (ret) |
692 | goto err_release; | |
693 | ||
694 | while (data_left > 0) { | |
695 | int size; | |
696 | ||
697 | size = min_t(int, tso.size, data_left); | |
7355f276 TK |
698 | bdp = fec_enet_get_nextdesc(bdp, &txq->bd); |
699 | index = fec_enet_get_bd_index(bdp, &txq->bd); | |
4d494cdc FD |
700 | ret = fec_enet_txq_put_data_tso(txq, skb, ndev, |
701 | bdp, index, | |
702 | tso.data, size, | |
703 | size == data_left, | |
79f33912 NA |
704 | total_len == 0); |
705 | if (ret) | |
706 | goto err_release; | |
707 | ||
708 | data_left -= size; | |
709 | tso_build_data(skb, &tso, size); | |
710 | } | |
711 | ||
7355f276 | 712 | bdp = fec_enet_get_nextdesc(bdp, &txq->bd); |
79f33912 NA |
713 | } |
714 | ||
715 | /* Save skb pointer */ | |
4d494cdc | 716 | txq->tx_skbuff[index] = skb; |
79f33912 | 717 | |
79f33912 | 718 | skb_tx_timestamp(skb); |
7355f276 | 719 | txq->bd.cur = bdp; |
79f33912 NA |
720 | |
721 | /* Trigger transmission start */ | |
6b7e4008 | 722 | if (!(fep->quirks & FEC_QUIRK_ERR007885) || |
53bb20d1 TK |
723 | !readl(txq->bd.reg_desc_active) || |
724 | !readl(txq->bd.reg_desc_active) || | |
725 | !readl(txq->bd.reg_desc_active) || | |
726 | !readl(txq->bd.reg_desc_active)) | |
727 | writel(0, txq->bd.reg_desc_active); | |
79f33912 NA |
728 | |
729 | return 0; | |
730 | ||
731 | err_release: | |
732 | /* TODO: Release all used data descriptors for TSO */ | |
733 | return ret; | |
734 | } | |
735 | ||
736 | static netdev_tx_t | |
737 | fec_enet_start_xmit(struct sk_buff *skb, struct net_device *ndev) | |
738 | { | |
739 | struct fec_enet_private *fep = netdev_priv(ndev); | |
740 | int entries_free; | |
4d494cdc FD |
741 | unsigned short queue; |
742 | struct fec_enet_priv_tx_q *txq; | |
743 | struct netdev_queue *nq; | |
79f33912 NA |
744 | int ret; |
745 | ||
4d494cdc FD |
746 | queue = skb_get_queue_mapping(skb); |
747 | txq = fep->tx_queue[queue]; | |
748 | nq = netdev_get_tx_queue(ndev, queue); | |
749 | ||
79f33912 | 750 | if (skb_is_gso(skb)) |
4d494cdc | 751 | ret = fec_enet_txq_submit_tso(txq, skb, ndev); |
79f33912 | 752 | else |
4d494cdc | 753 | ret = fec_enet_txq_submit_skb(txq, skb, ndev); |
6e909283 NA |
754 | if (ret) |
755 | return ret; | |
61a4427b | 756 | |
7355f276 | 757 | entries_free = fec_enet_get_free_txdesc_num(txq); |
4d494cdc FD |
758 | if (entries_free <= txq->tx_stop_threshold) |
759 | netif_tx_stop_queue(nq); | |
61a4427b NA |
760 | |
761 | return NETDEV_TX_OK; | |
762 | } | |
763 | ||
14109a59 FL |
764 | /* Init RX & TX buffer descriptors |
765 | */ | |
766 | static void fec_enet_bd_init(struct net_device *dev) | |
767 | { | |
768 | struct fec_enet_private *fep = netdev_priv(dev); | |
4d494cdc FD |
769 | struct fec_enet_priv_tx_q *txq; |
770 | struct fec_enet_priv_rx_q *rxq; | |
14109a59 FL |
771 | struct bufdesc *bdp; |
772 | unsigned int i; | |
59d0f746 | 773 | unsigned int q; |
14109a59 | 774 | |
59d0f746 FL |
775 | for (q = 0; q < fep->num_rx_queues; q++) { |
776 | /* Initialize the receive buffer descriptors. */ | |
777 | rxq = fep->rx_queue[q]; | |
7355f276 | 778 | bdp = rxq->bd.base; |
4d494cdc | 779 | |
7355f276 | 780 | for (i = 0; i < rxq->bd.ring_size; i++) { |
14109a59 | 781 | |
59d0f746 FL |
782 | /* Initialize the BD for every fragment in the page. */ |
783 | if (bdp->cbd_bufaddr) | |
5cfa3039 | 784 | bdp->cbd_sc = cpu_to_fec16(BD_ENET_RX_EMPTY); |
59d0f746 | 785 | else |
5cfa3039 | 786 | bdp->cbd_sc = cpu_to_fec16(0); |
7355f276 | 787 | bdp = fec_enet_get_nextdesc(bdp, &rxq->bd); |
59d0f746 FL |
788 | } |
789 | ||
790 | /* Set the last buffer to wrap */ | |
7355f276 | 791 | bdp = fec_enet_get_prevdesc(bdp, &rxq->bd); |
5cfa3039 | 792 | bdp->cbd_sc |= cpu_to_fec16(BD_SC_WRAP); |
59d0f746 | 793 | |
7355f276 | 794 | rxq->bd.cur = rxq->bd.base; |
59d0f746 FL |
795 | } |
796 | ||
797 | for (q = 0; q < fep->num_tx_queues; q++) { | |
798 | /* ...and the same for transmit */ | |
799 | txq = fep->tx_queue[q]; | |
7355f276 TK |
800 | bdp = txq->bd.base; |
801 | txq->bd.cur = bdp; | |
59d0f746 | 802 | |
7355f276 | 803 | for (i = 0; i < txq->bd.ring_size; i++) { |
59d0f746 | 804 | /* Initialize the BD for every fragment in the page. */ |
5cfa3039 | 805 | bdp->cbd_sc = cpu_to_fec16(0); |
59d0f746 FL |
806 | if (txq->tx_skbuff[i]) { |
807 | dev_kfree_skb_any(txq->tx_skbuff[i]); | |
808 | txq->tx_skbuff[i] = NULL; | |
809 | } | |
5cfa3039 | 810 | bdp->cbd_bufaddr = cpu_to_fec32(0); |
7355f276 | 811 | bdp = fec_enet_get_nextdesc(bdp, &txq->bd); |
59d0f746 FL |
812 | } |
813 | ||
814 | /* Set the last buffer to wrap */ | |
7355f276 | 815 | bdp = fec_enet_get_prevdesc(bdp, &txq->bd); |
5cfa3039 | 816 | bdp->cbd_sc |= cpu_to_fec16(BD_SC_WRAP); |
59d0f746 | 817 | txq->dirty_tx = bdp; |
14109a59 | 818 | } |
59d0f746 | 819 | } |
14109a59 | 820 | |
ce99d0d3 FL |
821 | static void fec_enet_active_rxring(struct net_device *ndev) |
822 | { | |
823 | struct fec_enet_private *fep = netdev_priv(ndev); | |
824 | int i; | |
825 | ||
826 | for (i = 0; i < fep->num_rx_queues; i++) | |
53bb20d1 | 827 | writel(0, fep->rx_queue[i]->bd.reg_desc_active); |
ce99d0d3 FL |
828 | } |
829 | ||
59d0f746 FL |
830 | static void fec_enet_enable_ring(struct net_device *ndev) |
831 | { | |
832 | struct fec_enet_private *fep = netdev_priv(ndev); | |
833 | struct fec_enet_priv_tx_q *txq; | |
834 | struct fec_enet_priv_rx_q *rxq; | |
835 | int i; | |
14109a59 | 836 | |
59d0f746 FL |
837 | for (i = 0; i < fep->num_rx_queues; i++) { |
838 | rxq = fep->rx_queue[i]; | |
7355f276 | 839 | writel(rxq->bd.dma, fep->hwp + FEC_R_DES_START(i)); |
d543a762 | 840 | writel(PKT_MAXBLR_SIZE, fep->hwp + FEC_R_BUFF_SIZE(i)); |
14109a59 | 841 | |
59d0f746 FL |
842 | /* enable DMA1/2 */ |
843 | if (i) | |
844 | writel(RCMR_MATCHEN | RCMR_CMP(i), | |
845 | fep->hwp + FEC_RCMR(i)); | |
846 | } | |
14109a59 | 847 | |
59d0f746 FL |
848 | for (i = 0; i < fep->num_tx_queues; i++) { |
849 | txq = fep->tx_queue[i]; | |
7355f276 | 850 | writel(txq->bd.dma, fep->hwp + FEC_X_DES_START(i)); |
59d0f746 FL |
851 | |
852 | /* enable DMA1/2 */ | |
853 | if (i) | |
854 | writel(DMA_CLASS_EN | IDLE_SLOPE(i), | |
855 | fep->hwp + FEC_DMA_CFG(i)); | |
14109a59 | 856 | } |
59d0f746 | 857 | } |
14109a59 | 858 | |
59d0f746 FL |
859 | static void fec_enet_reset_skb(struct net_device *ndev) |
860 | { | |
861 | struct fec_enet_private *fep = netdev_priv(ndev); | |
862 | struct fec_enet_priv_tx_q *txq; | |
863 | int i, j; | |
864 | ||
865 | for (i = 0; i < fep->num_tx_queues; i++) { | |
866 | txq = fep->tx_queue[i]; | |
867 | ||
7355f276 | 868 | for (j = 0; j < txq->bd.ring_size; j++) { |
59d0f746 FL |
869 | if (txq->tx_skbuff[j]) { |
870 | dev_kfree_skb_any(txq->tx_skbuff[j]); | |
871 | txq->tx_skbuff[j] = NULL; | |
872 | } | |
873 | } | |
874 | } | |
14109a59 FL |
875 | } |
876 | ||
dbc64a8e RK |
877 | /* |
878 | * This function is called to start or restart the FEC during a link | |
879 | * change, transmit timeout, or to reconfigure the FEC. The network | |
880 | * packet processing for this device must be stopped before this call. | |
45993653 | 881 | */ |
1da177e4 | 882 | static void |
ef83337d | 883 | fec_restart(struct net_device *ndev) |
1da177e4 | 884 | { |
c556167f | 885 | struct fec_enet_private *fep = netdev_priv(ndev); |
4c09eed9 | 886 | u32 val; |
cd1f402c UKK |
887 | u32 temp_mac[2]; |
888 | u32 rcntl = OPT_FRAME_SIZE | 0x04; | |
230dec61 | 889 | u32 ecntl = 0x2; /* ETHEREN */ |
1da177e4 | 890 | |
106c314c FD |
891 | /* Whack a reset. We should wait for this. |
892 | * For i.MX6SX SOC, enet use AXI bus, we use disable MAC | |
893 | * instead of reset MAC itself. | |
894 | */ | |
6b7e4008 | 895 | if (fep->quirks & FEC_QUIRK_HAS_AVB) { |
106c314c FD |
896 | writel(0, fep->hwp + FEC_ECNTRL); |
897 | } else { | |
898 | writel(1, fep->hwp + FEC_ECNTRL); | |
899 | udelay(10); | |
900 | } | |
1da177e4 | 901 | |
45993653 UKK |
902 | /* |
903 | * enet-mac reset will reset mac address registers too, | |
904 | * so need to reconfigure it. | |
905 | */ | |
6b7e4008 | 906 | if (fep->quirks & FEC_QUIRK_ENET_MAC) { |
45993653 | 907 | memcpy(&temp_mac, ndev->dev_addr, ETH_ALEN); |
5cfa3039 JB |
908 | writel((__force u32)cpu_to_be32(temp_mac[0]), |
909 | fep->hwp + FEC_ADDR_LOW); | |
910 | writel((__force u32)cpu_to_be32(temp_mac[1]), | |
911 | fep->hwp + FEC_ADDR_HIGH); | |
45993653 | 912 | } |
1da177e4 | 913 | |
45993653 | 914 | /* Clear any outstanding interrupt. */ |
e17f7fec | 915 | writel(0xffffffff, fep->hwp + FEC_IEVENT); |
1da177e4 | 916 | |
14109a59 FL |
917 | fec_enet_bd_init(ndev); |
918 | ||
59d0f746 | 919 | fec_enet_enable_ring(ndev); |
45993653 | 920 | |
59d0f746 FL |
921 | /* Reset tx SKB buffers. */ |
922 | fec_enet_reset_skb(ndev); | |
97b72e43 | 923 | |
45993653 | 924 | /* Enable MII mode */ |
ef83337d | 925 | if (fep->full_duplex == DUPLEX_FULL) { |
cd1f402c | 926 | /* FD enable */ |
45993653 UKK |
927 | writel(0x04, fep->hwp + FEC_X_CNTRL); |
928 | } else { | |
cd1f402c UKK |
929 | /* No Rcv on Xmit */ |
930 | rcntl |= 0x02; | |
45993653 UKK |
931 | writel(0x0, fep->hwp + FEC_X_CNTRL); |
932 | } | |
cd1f402c | 933 | |
45993653 UKK |
934 | /* Set MII speed */ |
935 | writel(fep->phy_speed, fep->hwp + FEC_MII_SPEED); | |
936 | ||
d1391930 | 937 | #if !defined(CONFIG_M5272) |
18803495 GU |
938 | if (fep->quirks & FEC_QUIRK_HAS_RACC) { |
939 | /* set RX checksum */ | |
940 | val = readl(fep->hwp + FEC_RACC); | |
941 | if (fep->csum_flags & FLAG_RX_CSUM_ENABLED) | |
942 | val |= FEC_RACC_OPTIONS; | |
943 | else | |
944 | val &= ~FEC_RACC_OPTIONS; | |
945 | writel(val, fep->hwp + FEC_RACC); | |
32867fcc | 946 | writel(PKT_MAXBUF_SIZE, fep->hwp + FEC_FTRL); |
18803495 | 947 | } |
d1391930 | 948 | #endif |
4c09eed9 | 949 | |
45993653 UKK |
950 | /* |
951 | * The phy interface and speed need to get configured | |
952 | * differently on enet-mac. | |
953 | */ | |
6b7e4008 | 954 | if (fep->quirks & FEC_QUIRK_ENET_MAC) { |
cd1f402c UKK |
955 | /* Enable flow control and length check */ |
956 | rcntl |= 0x40000000 | 0x00000020; | |
45993653 | 957 | |
230dec61 | 958 | /* RGMII, RMII or MII */ |
e813bb2b MP |
959 | if (fep->phy_interface == PHY_INTERFACE_MODE_RGMII || |
960 | fep->phy_interface == PHY_INTERFACE_MODE_RGMII_ID || | |
961 | fep->phy_interface == PHY_INTERFACE_MODE_RGMII_RXID || | |
962 | fep->phy_interface == PHY_INTERFACE_MODE_RGMII_TXID) | |
230dec61 SG |
963 | rcntl |= (1 << 6); |
964 | else if (fep->phy_interface == PHY_INTERFACE_MODE_RMII) | |
cd1f402c | 965 | rcntl |= (1 << 8); |
45993653 | 966 | else |
cd1f402c | 967 | rcntl &= ~(1 << 8); |
45993653 | 968 | |
230dec61 SG |
969 | /* 1G, 100M or 10M */ |
970 | if (fep->phy_dev) { | |
971 | if (fep->phy_dev->speed == SPEED_1000) | |
972 | ecntl |= (1 << 5); | |
973 | else if (fep->phy_dev->speed == SPEED_100) | |
974 | rcntl &= ~(1 << 9); | |
975 | else | |
976 | rcntl |= (1 << 9); | |
977 | } | |
45993653 UKK |
978 | } else { |
979 | #ifdef FEC_MIIGSK_ENR | |
6b7e4008 | 980 | if (fep->quirks & FEC_QUIRK_USE_GASKET) { |
8d82f219 | 981 | u32 cfgr; |
45993653 UKK |
982 | /* disable the gasket and wait */ |
983 | writel(0, fep->hwp + FEC_MIIGSK_ENR); | |
984 | while (readl(fep->hwp + FEC_MIIGSK_ENR) & 4) | |
985 | udelay(1); | |
986 | ||
987 | /* | |
988 | * configure the gasket: | |
989 | * RMII, 50 MHz, no loopback, no echo | |
0ca1e290 | 990 | * MII, 25 MHz, no loopback, no echo |
45993653 | 991 | */ |
8d82f219 EB |
992 | cfgr = (fep->phy_interface == PHY_INTERFACE_MODE_RMII) |
993 | ? BM_MIIGSK_CFGR_RMII : BM_MIIGSK_CFGR_MII; | |
994 | if (fep->phy_dev && fep->phy_dev->speed == SPEED_10) | |
995 | cfgr |= BM_MIIGSK_CFGR_FRCONT_10M; | |
996 | writel(cfgr, fep->hwp + FEC_MIIGSK_CFGR); | |
45993653 UKK |
997 | |
998 | /* re-enable the gasket */ | |
999 | writel(2, fep->hwp + FEC_MIIGSK_ENR); | |
97b72e43 | 1000 | } |
45993653 UKK |
1001 | #endif |
1002 | } | |
baa70a5c | 1003 | |
d1391930 | 1004 | #if !defined(CONFIG_M5272) |
baa70a5c FL |
1005 | /* enable pause frame*/ |
1006 | if ((fep->pause_flag & FEC_PAUSE_FLAG_ENABLE) || | |
1007 | ((fep->pause_flag & FEC_PAUSE_FLAG_AUTONEG) && | |
1008 | fep->phy_dev && fep->phy_dev->pause)) { | |
1009 | rcntl |= FEC_ENET_FCE; | |
1010 | ||
4c09eed9 | 1011 | /* set FIFO threshold parameter to reduce overrun */ |
baa70a5c FL |
1012 | writel(FEC_ENET_RSEM_V, fep->hwp + FEC_R_FIFO_RSEM); |
1013 | writel(FEC_ENET_RSFL_V, fep->hwp + FEC_R_FIFO_RSFL); | |
1014 | writel(FEC_ENET_RAEM_V, fep->hwp + FEC_R_FIFO_RAEM); | |
1015 | writel(FEC_ENET_RAFL_V, fep->hwp + FEC_R_FIFO_RAFL); | |
1016 | ||
1017 | /* OPD */ | |
1018 | writel(FEC_ENET_OPD_V, fep->hwp + FEC_OPD); | |
1019 | } else { | |
1020 | rcntl &= ~FEC_ENET_FCE; | |
1021 | } | |
d1391930 | 1022 | #endif /* !defined(CONFIG_M5272) */ |
baa70a5c | 1023 | |
cd1f402c | 1024 | writel(rcntl, fep->hwp + FEC_R_CNTRL); |
3b2b74ca | 1025 | |
84fe6182 SW |
1026 | /* Setup multicast filter. */ |
1027 | set_multicast_list(ndev); | |
1028 | #ifndef CONFIG_M5272 | |
1029 | writel(0, fep->hwp + FEC_HASH_TABLE_HIGH); | |
1030 | writel(0, fep->hwp + FEC_HASH_TABLE_LOW); | |
1031 | #endif | |
1032 | ||
6b7e4008 | 1033 | if (fep->quirks & FEC_QUIRK_ENET_MAC) { |
230dec61 SG |
1034 | /* enable ENET endian swap */ |
1035 | ecntl |= (1 << 8); | |
1036 | /* enable ENET store and forward mode */ | |
1037 | writel(1 << 8, fep->hwp + FEC_X_WMRK); | |
1038 | } | |
1039 | ||
ff43da86 FL |
1040 | if (fep->bufdesc_ex) |
1041 | ecntl |= (1 << 4); | |
6605b730 | 1042 | |
38ae92dc | 1043 | #ifndef CONFIG_M5272 |
b9eef55c JB |
1044 | /* Enable the MIB statistic event counters */ |
1045 | writel(0 << 31, fep->hwp + FEC_MIB_CTRLSTAT); | |
38ae92dc CH |
1046 | #endif |
1047 | ||
45993653 | 1048 | /* And last, enable the transmit and receive processing */ |
230dec61 | 1049 | writel(ecntl, fep->hwp + FEC_ECNTRL); |
ce99d0d3 | 1050 | fec_enet_active_rxring(ndev); |
45993653 | 1051 | |
ff43da86 FL |
1052 | if (fep->bufdesc_ex) |
1053 | fec_ptp_start_cyclecounter(ndev); | |
1054 | ||
45993653 | 1055 | /* Enable interrupts we wish to service */ |
0c5a3aef NA |
1056 | if (fep->link) |
1057 | writel(FEC_DEFAULT_IMASK, fep->hwp + FEC_IMASK); | |
1058 | else | |
1059 | writel(FEC_ENET_MII, fep->hwp + FEC_IMASK); | |
d851b47b FD |
1060 | |
1061 | /* Init the interrupt coalescing */ | |
1062 | fec_enet_itr_coal_init(ndev); | |
1063 | ||
45993653 UKK |
1064 | } |
1065 | ||
1066 | static void | |
1067 | fec_stop(struct net_device *ndev) | |
1068 | { | |
1069 | struct fec_enet_private *fep = netdev_priv(ndev); | |
de40ed31 | 1070 | struct fec_platform_data *pdata = fep->pdev->dev.platform_data; |
42431dc2 | 1071 | u32 rmii_mode = readl(fep->hwp + FEC_R_CNTRL) & (1 << 8); |
de40ed31 | 1072 | u32 val; |
45993653 UKK |
1073 | |
1074 | /* We cannot expect a graceful transmit stop without link !!! */ | |
1075 | if (fep->link) { | |
1076 | writel(1, fep->hwp + FEC_X_CNTRL); /* Graceful transmit stop */ | |
1077 | udelay(10); | |
1078 | if (!(readl(fep->hwp + FEC_IEVENT) & FEC_ENET_GRA)) | |
31b7720c | 1079 | netdev_err(ndev, "Graceful transmit stop did not complete!\n"); |
45993653 UKK |
1080 | } |
1081 | ||
106c314c FD |
1082 | /* Whack a reset. We should wait for this. |
1083 | * For i.MX6SX SOC, enet use AXI bus, we use disable MAC | |
1084 | * instead of reset MAC itself. | |
1085 | */ | |
de40ed31 NA |
1086 | if (!(fep->wol_flag & FEC_WOL_FLAG_SLEEP_ON)) { |
1087 | if (fep->quirks & FEC_QUIRK_HAS_AVB) { | |
1088 | writel(0, fep->hwp + FEC_ECNTRL); | |
1089 | } else { | |
1090 | writel(1, fep->hwp + FEC_ECNTRL); | |
1091 | udelay(10); | |
1092 | } | |
1093 | writel(FEC_DEFAULT_IMASK, fep->hwp + FEC_IMASK); | |
106c314c | 1094 | } else { |
de40ed31 NA |
1095 | writel(FEC_DEFAULT_IMASK | FEC_ENET_WAKEUP, fep->hwp + FEC_IMASK); |
1096 | val = readl(fep->hwp + FEC_ECNTRL); | |
1097 | val |= (FEC_ECR_MAGICEN | FEC_ECR_SLEEP); | |
1098 | writel(val, fep->hwp + FEC_ECNTRL); | |
1099 | ||
1100 | if (pdata && pdata->sleep_mode_enable) | |
1101 | pdata->sleep_mode_enable(true); | |
106c314c | 1102 | } |
45993653 | 1103 | writel(fep->phy_speed, fep->hwp + FEC_MII_SPEED); |
230dec61 SG |
1104 | |
1105 | /* We have to keep ENET enabled to have MII interrupt stay working */ | |
de40ed31 NA |
1106 | if (fep->quirks & FEC_QUIRK_ENET_MAC && |
1107 | !(fep->wol_flag & FEC_WOL_FLAG_SLEEP_ON)) { | |
230dec61 | 1108 | writel(2, fep->hwp + FEC_ECNTRL); |
42431dc2 LW |
1109 | writel(rmii_mode, fep->hwp + FEC_R_CNTRL); |
1110 | } | |
1da177e4 LT |
1111 | } |
1112 | ||
1113 | ||
45993653 UKK |
1114 | static void |
1115 | fec_timeout(struct net_device *ndev) | |
1116 | { | |
1117 | struct fec_enet_private *fep = netdev_priv(ndev); | |
1118 | ||
344756f6 RK |
1119 | fec_dump(ndev); |
1120 | ||
45993653 UKK |
1121 | ndev->stats.tx_errors++; |
1122 | ||
36cdc743 | 1123 | schedule_work(&fep->tx_timeout_work); |
54309fa6 FL |
1124 | } |
1125 | ||
36cdc743 | 1126 | static void fec_enet_timeout_work(struct work_struct *work) |
54309fa6 FL |
1127 | { |
1128 | struct fec_enet_private *fep = | |
36cdc743 | 1129 | container_of(work, struct fec_enet_private, tx_timeout_work); |
8ce5624f | 1130 | struct net_device *ndev = fep->netdev; |
54309fa6 | 1131 | |
36cdc743 RK |
1132 | rtnl_lock(); |
1133 | if (netif_device_present(ndev) || netif_running(ndev)) { | |
1134 | napi_disable(&fep->napi); | |
1135 | netif_tx_lock_bh(ndev); | |
1136 | fec_restart(ndev); | |
1137 | netif_wake_queue(ndev); | |
1138 | netif_tx_unlock_bh(ndev); | |
1139 | napi_enable(&fep->napi); | |
54309fa6 | 1140 | } |
36cdc743 | 1141 | rtnl_unlock(); |
45993653 UKK |
1142 | } |
1143 | ||
bfd4ecdd RK |
1144 | static void |
1145 | fec_enet_hwtstamp(struct fec_enet_private *fep, unsigned ts, | |
1146 | struct skb_shared_hwtstamps *hwtstamps) | |
1147 | { | |
1148 | unsigned long flags; | |
1149 | u64 ns; | |
1150 | ||
1151 | spin_lock_irqsave(&fep->tmreg_lock, flags); | |
1152 | ns = timecounter_cyc2time(&fep->tc, ts); | |
1153 | spin_unlock_irqrestore(&fep->tmreg_lock, flags); | |
1154 | ||
1155 | memset(hwtstamps, 0, sizeof(*hwtstamps)); | |
1156 | hwtstamps->hwtstamp = ns_to_ktime(ns); | |
1157 | } | |
1158 | ||
1da177e4 | 1159 | static void |
4d494cdc | 1160 | fec_enet_tx_queue(struct net_device *ndev, u16 queue_id) |
1da177e4 LT |
1161 | { |
1162 | struct fec_enet_private *fep; | |
a2fe37b6 | 1163 | struct bufdesc *bdp; |
0e702ab3 | 1164 | unsigned short status; |
1da177e4 | 1165 | struct sk_buff *skb; |
4d494cdc FD |
1166 | struct fec_enet_priv_tx_q *txq; |
1167 | struct netdev_queue *nq; | |
de5fb0a0 | 1168 | int index = 0; |
79f33912 | 1169 | int entries_free; |
1da177e4 | 1170 | |
c556167f | 1171 | fep = netdev_priv(ndev); |
4d494cdc FD |
1172 | |
1173 | queue_id = FEC_ENET_GET_QUQUE(queue_id); | |
1174 | ||
1175 | txq = fep->tx_queue[queue_id]; | |
1176 | /* get next bdp of dirty_tx */ | |
1177 | nq = netdev_get_tx_queue(ndev, queue_id); | |
1178 | bdp = txq->dirty_tx; | |
1da177e4 | 1179 | |
de5fb0a0 | 1180 | /* get next bdp of dirty_tx */ |
7355f276 | 1181 | bdp = fec_enet_get_nextdesc(bdp, &txq->bd); |
de5fb0a0 | 1182 | |
7355f276 TK |
1183 | while (bdp != READ_ONCE(txq->bd.cur)) { |
1184 | /* Order the load of bd.cur and cbd_sc */ | |
c4bc44c6 | 1185 | rmb(); |
5cfa3039 | 1186 | status = fec16_to_cpu(READ_ONCE(bdp->cbd_sc)); |
c4bc44c6 | 1187 | if (status & BD_ENET_TX_READY) |
f0b3fbea SH |
1188 | break; |
1189 | ||
7355f276 | 1190 | index = fec_enet_get_bd_index(bdp, &txq->bd); |
2b995f63 | 1191 | |
a2fe37b6 | 1192 | skb = txq->tx_skbuff[index]; |
2b995f63 | 1193 | txq->tx_skbuff[index] = NULL; |
5cfa3039 JB |
1194 | if (!IS_TSO_HEADER(txq, fec32_to_cpu(bdp->cbd_bufaddr))) |
1195 | dma_unmap_single(&fep->pdev->dev, | |
1196 | fec32_to_cpu(bdp->cbd_bufaddr), | |
1197 | fec16_to_cpu(bdp->cbd_datlen), | |
1198 | DMA_TO_DEVICE); | |
1199 | bdp->cbd_bufaddr = cpu_to_fec32(0); | |
a2fe37b6 | 1200 | if (!skb) { |
7355f276 | 1201 | bdp = fec_enet_get_nextdesc(bdp, &txq->bd); |
a2fe37b6 FE |
1202 | continue; |
1203 | } | |
de5fb0a0 | 1204 | |
1da177e4 | 1205 | /* Check for errors. */ |
0e702ab3 | 1206 | if (status & (BD_ENET_TX_HB | BD_ENET_TX_LC | |
1da177e4 LT |
1207 | BD_ENET_TX_RL | BD_ENET_TX_UN | |
1208 | BD_ENET_TX_CSL)) { | |
c556167f | 1209 | ndev->stats.tx_errors++; |
0e702ab3 | 1210 | if (status & BD_ENET_TX_HB) /* No heartbeat */ |
c556167f | 1211 | ndev->stats.tx_heartbeat_errors++; |
0e702ab3 | 1212 | if (status & BD_ENET_TX_LC) /* Late collision */ |
c556167f | 1213 | ndev->stats.tx_window_errors++; |
0e702ab3 | 1214 | if (status & BD_ENET_TX_RL) /* Retrans limit */ |
c556167f | 1215 | ndev->stats.tx_aborted_errors++; |
0e702ab3 | 1216 | if (status & BD_ENET_TX_UN) /* Underrun */ |
c556167f | 1217 | ndev->stats.tx_fifo_errors++; |
0e702ab3 | 1218 | if (status & BD_ENET_TX_CSL) /* Carrier lost */ |
c556167f | 1219 | ndev->stats.tx_carrier_errors++; |
1da177e4 | 1220 | } else { |
c556167f | 1221 | ndev->stats.tx_packets++; |
6e909283 | 1222 | ndev->stats.tx_bytes += skb->len; |
1da177e4 LT |
1223 | } |
1224 | ||
ff43da86 FL |
1225 | if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_IN_PROGRESS) && |
1226 | fep->bufdesc_ex) { | |
6605b730 | 1227 | struct skb_shared_hwtstamps shhwtstamps; |
ff43da86 | 1228 | struct bufdesc_ex *ebdp = (struct bufdesc_ex *)bdp; |
6605b730 | 1229 | |
5cfa3039 | 1230 | fec_enet_hwtstamp(fep, fec32_to_cpu(ebdp->ts), &shhwtstamps); |
6605b730 FL |
1231 | skb_tstamp_tx(skb, &shhwtstamps); |
1232 | } | |
ff43da86 | 1233 | |
1da177e4 LT |
1234 | /* Deferred means some collisions occurred during transmit, |
1235 | * but we eventually sent the packet OK. | |
1236 | */ | |
0e702ab3 | 1237 | if (status & BD_ENET_TX_DEF) |
c556167f | 1238 | ndev->stats.collisions++; |
6aa20a22 | 1239 | |
22f6b860 | 1240 | /* Free the sk buffer associated with this last transmit */ |
1da177e4 | 1241 | dev_kfree_skb_any(skb); |
de5fb0a0 | 1242 | |
c4bc44c6 KH |
1243 | /* Make sure the update to bdp and tx_skbuff are performed |
1244 | * before dirty_tx | |
1245 | */ | |
1246 | wmb(); | |
4d494cdc | 1247 | txq->dirty_tx = bdp; |
6aa20a22 | 1248 | |
22f6b860 | 1249 | /* Update pointer to next buffer descriptor to be transmitted */ |
7355f276 | 1250 | bdp = fec_enet_get_nextdesc(bdp, &txq->bd); |
6aa20a22 | 1251 | |
22f6b860 | 1252 | /* Since we have freed up a buffer, the ring is no longer full |
1da177e4 | 1253 | */ |
79f33912 | 1254 | if (netif_queue_stopped(ndev)) { |
7355f276 | 1255 | entries_free = fec_enet_get_free_txdesc_num(txq); |
4d494cdc FD |
1256 | if (entries_free >= txq->tx_wake_threshold) |
1257 | netif_tx_wake_queue(nq); | |
79f33912 | 1258 | } |
1da177e4 | 1259 | } |
ccea2968 RK |
1260 | |
1261 | /* ERR006538: Keep the transmitter going */ | |
7355f276 | 1262 | if (bdp != txq->bd.cur && |
53bb20d1 TK |
1263 | readl(txq->bd.reg_desc_active) == 0) |
1264 | writel(0, txq->bd.reg_desc_active); | |
4d494cdc FD |
1265 | } |
1266 | ||
1267 | static void | |
1268 | fec_enet_tx(struct net_device *ndev) | |
1269 | { | |
1270 | struct fec_enet_private *fep = netdev_priv(ndev); | |
1271 | u16 queue_id; | |
1272 | /* First process class A queue, then Class B and Best Effort queue */ | |
1273 | for_each_set_bit(queue_id, &fep->work_tx, FEC_ENET_MAX_TX_QS) { | |
1274 | clear_bit(queue_id, &fep->work_tx); | |
1275 | fec_enet_tx_queue(ndev, queue_id); | |
1276 | } | |
1277 | return; | |
1da177e4 LT |
1278 | } |
1279 | ||
1b7bde6d NA |
1280 | static int |
1281 | fec_enet_new_rxbdp(struct net_device *ndev, struct bufdesc *bdp, struct sk_buff *skb) | |
1282 | { | |
1283 | struct fec_enet_private *fep = netdev_priv(ndev); | |
1284 | int off; | |
1285 | ||
1286 | off = ((unsigned long)skb->data) & fep->rx_align; | |
1287 | if (off) | |
1288 | skb_reserve(skb, fep->rx_align + 1 - off); | |
1289 | ||
5cfa3039 JB |
1290 | bdp->cbd_bufaddr = cpu_to_fec32(dma_map_single(&fep->pdev->dev, skb->data, FEC_ENET_RX_FRSIZE - fep->rx_align, DMA_FROM_DEVICE)); |
1291 | if (dma_mapping_error(&fep->pdev->dev, fec32_to_cpu(bdp->cbd_bufaddr))) { | |
1b7bde6d NA |
1292 | if (net_ratelimit()) |
1293 | netdev_err(ndev, "Rx DMA memory map failed\n"); | |
1294 | return -ENOMEM; | |
1295 | } | |
1296 | ||
1297 | return 0; | |
1298 | } | |
1299 | ||
1300 | static bool fec_enet_copybreak(struct net_device *ndev, struct sk_buff **skb, | |
1310b544 | 1301 | struct bufdesc *bdp, u32 length, bool swap) |
1b7bde6d NA |
1302 | { |
1303 | struct fec_enet_private *fep = netdev_priv(ndev); | |
1304 | struct sk_buff *new_skb; | |
1305 | ||
1306 | if (length > fep->rx_copybreak) | |
1307 | return false; | |
1308 | ||
1309 | new_skb = netdev_alloc_skb(ndev, length); | |
1310 | if (!new_skb) | |
1311 | return false; | |
1312 | ||
5cfa3039 JB |
1313 | dma_sync_single_for_cpu(&fep->pdev->dev, |
1314 | fec32_to_cpu(bdp->cbd_bufaddr), | |
1b7bde6d NA |
1315 | FEC_ENET_RX_FRSIZE - fep->rx_align, |
1316 | DMA_FROM_DEVICE); | |
1310b544 LW |
1317 | if (!swap) |
1318 | memcpy(new_skb->data, (*skb)->data, length); | |
1319 | else | |
1320 | swap_buffer2(new_skb->data, (*skb)->data, length); | |
1b7bde6d NA |
1321 | *skb = new_skb; |
1322 | ||
1323 | return true; | |
1324 | } | |
1325 | ||
7355f276 | 1326 | /* During a receive, the bd_rx.cur points to the current incoming buffer. |
1da177e4 LT |
1327 | * When we update through the ring, if the next incoming buffer has |
1328 | * not been given to the system, we just set the empty indicator, | |
1329 | * effectively tossing the packet. | |
1330 | */ | |
dc975382 | 1331 | static int |
4d494cdc | 1332 | fec_enet_rx_queue(struct net_device *ndev, int budget, u16 queue_id) |
1da177e4 | 1333 | { |
c556167f | 1334 | struct fec_enet_private *fep = netdev_priv(ndev); |
4d494cdc | 1335 | struct fec_enet_priv_rx_q *rxq; |
2e28532f | 1336 | struct bufdesc *bdp; |
0e702ab3 | 1337 | unsigned short status; |
1b7bde6d NA |
1338 | struct sk_buff *skb_new = NULL; |
1339 | struct sk_buff *skb; | |
1da177e4 LT |
1340 | ushort pkt_len; |
1341 | __u8 *data; | |
dc975382 | 1342 | int pkt_received = 0; |
cdffcf1b JB |
1343 | struct bufdesc_ex *ebdp = NULL; |
1344 | bool vlan_packet_rcvd = false; | |
1345 | u16 vlan_tag; | |
d842a31f | 1346 | int index = 0; |
1b7bde6d | 1347 | bool is_copybreak; |
6b7e4008 | 1348 | bool need_swap = fep->quirks & FEC_QUIRK_SWAP_FRAME; |
6aa20a22 | 1349 | |
0e702ab3 GU |
1350 | #ifdef CONFIG_M532x |
1351 | flush_cache_all(); | |
6aa20a22 | 1352 | #endif |
4d494cdc FD |
1353 | queue_id = FEC_ENET_GET_QUQUE(queue_id); |
1354 | rxq = fep->rx_queue[queue_id]; | |
1da177e4 | 1355 | |
1da177e4 LT |
1356 | /* First, grab all of the stats for the incoming packet. |
1357 | * These get messed up if we get called due to a busy condition. | |
1358 | */ | |
7355f276 | 1359 | bdp = rxq->bd.cur; |
1da177e4 | 1360 | |
5cfa3039 | 1361 | while (!((status = fec16_to_cpu(bdp->cbd_sc)) & BD_ENET_RX_EMPTY)) { |
1da177e4 | 1362 | |
dc975382 FL |
1363 | if (pkt_received >= budget) |
1364 | break; | |
1365 | pkt_received++; | |
1366 | ||
ed63f1dc | 1367 | writel(FEC_ENET_RXF, fep->hwp + FEC_IEVENT); |
db3421c1 | 1368 | |
22f6b860 | 1369 | /* Check for errors. */ |
095098e1 | 1370 | status ^= BD_ENET_RX_LAST; |
22f6b860 | 1371 | if (status & (BD_ENET_RX_LG | BD_ENET_RX_SH | BD_ENET_RX_NO | |
095098e1 TK |
1372 | BD_ENET_RX_CR | BD_ENET_RX_OV | BD_ENET_RX_LAST | |
1373 | BD_ENET_RX_CL)) { | |
c556167f | 1374 | ndev->stats.rx_errors++; |
095098e1 TK |
1375 | if (status & BD_ENET_RX_OV) { |
1376 | /* FIFO overrun */ | |
1377 | ndev->stats.rx_fifo_errors++; | |
1378 | goto rx_processing_done; | |
1379 | } | |
1380 | if (status & (BD_ENET_RX_LG | BD_ENET_RX_SH | |
1381 | | BD_ENET_RX_LAST)) { | |
22f6b860 | 1382 | /* Frame too long or too short. */ |
c556167f | 1383 | ndev->stats.rx_length_errors++; |
095098e1 TK |
1384 | if (status & BD_ENET_RX_LAST) |
1385 | netdev_err(ndev, "rcv is not +last\n"); | |
22f6b860 | 1386 | } |
22f6b860 | 1387 | if (status & BD_ENET_RX_CR) /* CRC Error */ |
c556167f | 1388 | ndev->stats.rx_crc_errors++; |
095098e1 TK |
1389 | /* Report late collisions as a frame error. */ |
1390 | if (status & (BD_ENET_RX_NO | BD_ENET_RX_CL)) | |
1391 | ndev->stats.rx_frame_errors++; | |
22f6b860 SH |
1392 | goto rx_processing_done; |
1393 | } | |
1da177e4 | 1394 | |
22f6b860 | 1395 | /* Process the incoming frame. */ |
c556167f | 1396 | ndev->stats.rx_packets++; |
5cfa3039 | 1397 | pkt_len = fec16_to_cpu(bdp->cbd_datlen); |
c556167f | 1398 | ndev->stats.rx_bytes += pkt_len; |
1da177e4 | 1399 | |
7355f276 | 1400 | index = fec_enet_get_bd_index(bdp, &rxq->bd); |
1b7bde6d | 1401 | skb = rxq->rx_skbuff[index]; |
ccdc4f19 | 1402 | |
1b7bde6d NA |
1403 | /* The packet length includes FCS, but we don't want to |
1404 | * include that when passing upstream as it messes up | |
1405 | * bridging applications. | |
1406 | */ | |
1310b544 LW |
1407 | is_copybreak = fec_enet_copybreak(ndev, &skb, bdp, pkt_len - 4, |
1408 | need_swap); | |
1b7bde6d NA |
1409 | if (!is_copybreak) { |
1410 | skb_new = netdev_alloc_skb(ndev, FEC_ENET_RX_FRSIZE); | |
1411 | if (unlikely(!skb_new)) { | |
1412 | ndev->stats.rx_dropped++; | |
1413 | goto rx_processing_done; | |
1414 | } | |
5cfa3039 JB |
1415 | dma_unmap_single(&fep->pdev->dev, |
1416 | fec32_to_cpu(bdp->cbd_bufaddr), | |
1b7bde6d NA |
1417 | FEC_ENET_RX_FRSIZE - fep->rx_align, |
1418 | DMA_FROM_DEVICE); | |
1419 | } | |
1420 | ||
1421 | prefetch(skb->data - NET_IP_ALIGN); | |
1422 | skb_put(skb, pkt_len - 4); | |
1423 | data = skb->data; | |
1310b544 | 1424 | if (!is_copybreak && need_swap) |
b5680e0b SG |
1425 | swap_buffer(data, pkt_len); |
1426 | ||
cdffcf1b JB |
1427 | /* Extract the enhanced buffer descriptor */ |
1428 | ebdp = NULL; | |
1429 | if (fep->bufdesc_ex) | |
1430 | ebdp = (struct bufdesc_ex *)bdp; | |
1431 | ||
1432 | /* If this is a VLAN packet remove the VLAN Tag */ | |
1433 | vlan_packet_rcvd = false; | |
1434 | if ((ndev->features & NETIF_F_HW_VLAN_CTAG_RX) && | |
5cfa3039 JB |
1435 | fep->bufdesc_ex && |
1436 | (ebdp->cbd_esc & cpu_to_fec32(BD_ENET_RX_VLAN))) { | |
cdffcf1b JB |
1437 | /* Push and remove the vlan tag */ |
1438 | struct vlan_hdr *vlan_header = | |
1439 | (struct vlan_hdr *) (data + ETH_HLEN); | |
1440 | vlan_tag = ntohs(vlan_header->h_vlan_TCI); | |
cdffcf1b JB |
1441 | |
1442 | vlan_packet_rcvd = true; | |
1b7bde6d | 1443 | |
af5cbc98 | 1444 | memmove(skb->data + VLAN_HLEN, data, ETH_ALEN * 2); |
1b7bde6d | 1445 | skb_pull(skb, VLAN_HLEN); |
cdffcf1b JB |
1446 | } |
1447 | ||
1b7bde6d | 1448 | skb->protocol = eth_type_trans(skb, ndev); |
1da177e4 | 1449 | |
1b7bde6d NA |
1450 | /* Get receive timestamp from the skb */ |
1451 | if (fep->hwts_rx_en && fep->bufdesc_ex) | |
5cfa3039 | 1452 | fec_enet_hwtstamp(fep, fec32_to_cpu(ebdp->ts), |
1b7bde6d NA |
1453 | skb_hwtstamps(skb)); |
1454 | ||
1455 | if (fep->bufdesc_ex && | |
1456 | (fep->csum_flags & FLAG_RX_CSUM_ENABLED)) { | |
5cfa3039 | 1457 | if (!(ebdp->cbd_esc & cpu_to_fec32(FLAG_RX_CSUM_ERROR))) { |
1b7bde6d NA |
1458 | /* don't check it */ |
1459 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
1460 | } else { | |
1461 | skb_checksum_none_assert(skb); | |
4c09eed9 | 1462 | } |
1b7bde6d | 1463 | } |
4c09eed9 | 1464 | |
1b7bde6d NA |
1465 | /* Handle received VLAN packets */ |
1466 | if (vlan_packet_rcvd) | |
1467 | __vlan_hwaccel_put_tag(skb, | |
1468 | htons(ETH_P_8021Q), | |
1469 | vlan_tag); | |
cdffcf1b | 1470 | |
1b7bde6d NA |
1471 | napi_gro_receive(&fep->napi, skb); |
1472 | ||
1473 | if (is_copybreak) { | |
5cfa3039 JB |
1474 | dma_sync_single_for_device(&fep->pdev->dev, |
1475 | fec32_to_cpu(bdp->cbd_bufaddr), | |
1b7bde6d NA |
1476 | FEC_ENET_RX_FRSIZE - fep->rx_align, |
1477 | DMA_FROM_DEVICE); | |
1478 | } else { | |
1479 | rxq->rx_skbuff[index] = skb_new; | |
1480 | fec_enet_new_rxbdp(ndev, bdp, skb_new); | |
22f6b860 | 1481 | } |
f0b3fbea | 1482 | |
22f6b860 SH |
1483 | rx_processing_done: |
1484 | /* Clear the status flags for this buffer */ | |
1485 | status &= ~BD_ENET_RX_STATS; | |
1da177e4 | 1486 | |
22f6b860 SH |
1487 | /* Mark the buffer empty */ |
1488 | status |= BD_ENET_RX_EMPTY; | |
6aa20a22 | 1489 | |
ff43da86 FL |
1490 | if (fep->bufdesc_ex) { |
1491 | struct bufdesc_ex *ebdp = (struct bufdesc_ex *)bdp; | |
1492 | ||
5cfa3039 | 1493 | ebdp->cbd_esc = cpu_to_fec32(BD_ENET_RX_INT); |
ff43da86 FL |
1494 | ebdp->cbd_prot = 0; |
1495 | ebdp->cbd_bdu = 0; | |
1496 | } | |
be293467 TK |
1497 | /* Make sure the updates to rest of the descriptor are |
1498 | * performed before transferring ownership. | |
1499 | */ | |
1500 | wmb(); | |
1501 | bdp->cbd_sc = cpu_to_fec16(status); | |
6605b730 | 1502 | |
22f6b860 | 1503 | /* Update BD pointer to next entry */ |
7355f276 | 1504 | bdp = fec_enet_get_nextdesc(bdp, &rxq->bd); |
36e24e2e | 1505 | |
22f6b860 SH |
1506 | /* Doing this here will keep the FEC running while we process |
1507 | * incoming frames. On a heavily loaded network, we should be | |
1508 | * able to keep up at the expense of system resources. | |
1509 | */ | |
53bb20d1 | 1510 | writel(0, rxq->bd.reg_desc_active); |
22f6b860 | 1511 | } |
7355f276 | 1512 | rxq->bd.cur = bdp; |
4d494cdc FD |
1513 | return pkt_received; |
1514 | } | |
1da177e4 | 1515 | |
4d494cdc FD |
1516 | static int |
1517 | fec_enet_rx(struct net_device *ndev, int budget) | |
1518 | { | |
1519 | int pkt_received = 0; | |
1520 | u16 queue_id; | |
1521 | struct fec_enet_private *fep = netdev_priv(ndev); | |
1522 | ||
1523 | for_each_set_bit(queue_id, &fep->work_rx, FEC_ENET_MAX_RX_QS) { | |
1524 | clear_bit(queue_id, &fep->work_rx); | |
1525 | pkt_received += fec_enet_rx_queue(ndev, | |
1526 | budget - pkt_received, queue_id); | |
1527 | } | |
dc975382 | 1528 | return pkt_received; |
1da177e4 LT |
1529 | } |
1530 | ||
4d494cdc FD |
1531 | static bool |
1532 | fec_enet_collect_events(struct fec_enet_private *fep, uint int_events) | |
1533 | { | |
1534 | if (int_events == 0) | |
1535 | return false; | |
1536 | ||
1537 | if (int_events & FEC_ENET_RXF) | |
1538 | fep->work_rx |= (1 << 2); | |
ce99d0d3 FL |
1539 | if (int_events & FEC_ENET_RXF_1) |
1540 | fep->work_rx |= (1 << 0); | |
1541 | if (int_events & FEC_ENET_RXF_2) | |
1542 | fep->work_rx |= (1 << 1); | |
4d494cdc FD |
1543 | |
1544 | if (int_events & FEC_ENET_TXF) | |
1545 | fep->work_tx |= (1 << 2); | |
ce99d0d3 FL |
1546 | if (int_events & FEC_ENET_TXF_1) |
1547 | fep->work_tx |= (1 << 0); | |
1548 | if (int_events & FEC_ENET_TXF_2) | |
1549 | fep->work_tx |= (1 << 1); | |
4d494cdc FD |
1550 | |
1551 | return true; | |
1552 | } | |
1553 | ||
45993653 UKK |
1554 | static irqreturn_t |
1555 | fec_enet_interrupt(int irq, void *dev_id) | |
1556 | { | |
1557 | struct net_device *ndev = dev_id; | |
1558 | struct fec_enet_private *fep = netdev_priv(ndev); | |
1559 | uint int_events; | |
1560 | irqreturn_t ret = IRQ_NONE; | |
1561 | ||
7a16807c | 1562 | int_events = readl(fep->hwp + FEC_IEVENT); |
94191fd6 | 1563 | writel(int_events, fep->hwp + FEC_IEVENT); |
4d494cdc | 1564 | fec_enet_collect_events(fep, int_events); |
45993653 | 1565 | |
61615cd2 | 1566 | if ((fep->work_tx || fep->work_rx) && fep->link) { |
7a16807c | 1567 | ret = IRQ_HANDLED; |
dc975382 | 1568 | |
94191fd6 NA |
1569 | if (napi_schedule_prep(&fep->napi)) { |
1570 | /* Disable the NAPI interrupts */ | |
80dc6a9f | 1571 | writel(FEC_NAPI_IMASK, fep->hwp + FEC_IMASK); |
94191fd6 NA |
1572 | __napi_schedule(&fep->napi); |
1573 | } | |
7a16807c | 1574 | } |
45993653 | 1575 | |
7a16807c RK |
1576 | if (int_events & FEC_ENET_MII) { |
1577 | ret = IRQ_HANDLED; | |
1578 | complete(&fep->mdio_done); | |
1579 | } | |
45993653 | 1580 | |
81f35ffd PZ |
1581 | if (fep->ptp_clock) |
1582 | fec_ptp_check_pps_event(fep); | |
278d2404 | 1583 | |
45993653 UKK |
1584 | return ret; |
1585 | } | |
1586 | ||
dc975382 FL |
1587 | static int fec_enet_rx_napi(struct napi_struct *napi, int budget) |
1588 | { | |
1589 | struct net_device *ndev = napi->dev; | |
dc975382 | 1590 | struct fec_enet_private *fep = netdev_priv(ndev); |
7a16807c RK |
1591 | int pkts; |
1592 | ||
7a16807c | 1593 | pkts = fec_enet_rx(ndev, budget); |
45993653 | 1594 | |
de5fb0a0 FL |
1595 | fec_enet_tx(ndev); |
1596 | ||
dc975382 FL |
1597 | if (pkts < budget) { |
1598 | napi_complete(napi); | |
1599 | writel(FEC_DEFAULT_IMASK, fep->hwp + FEC_IMASK); | |
1600 | } | |
1601 | return pkts; | |
1602 | } | |
45993653 | 1603 | |
e6b043d5 | 1604 | /* ------------------------------------------------------------------------- */ |
0c7768a0 | 1605 | static void fec_get_mac(struct net_device *ndev) |
1da177e4 | 1606 | { |
c556167f | 1607 | struct fec_enet_private *fep = netdev_priv(ndev); |
94660ba0 | 1608 | struct fec_platform_data *pdata = dev_get_platdata(&fep->pdev->dev); |
e6b043d5 | 1609 | unsigned char *iap, tmpaddr[ETH_ALEN]; |
1da177e4 | 1610 | |
49da97dc SG |
1611 | /* |
1612 | * try to get mac address in following order: | |
1613 | * | |
1614 | * 1) module parameter via kernel command line in form | |
1615 | * fec.macaddr=0x00,0x04,0x9f,0x01,0x30,0xe0 | |
1616 | */ | |
1617 | iap = macaddr; | |
1618 | ||
ca2cc333 SG |
1619 | /* |
1620 | * 2) from device tree data | |
1621 | */ | |
1622 | if (!is_valid_ether_addr(iap)) { | |
1623 | struct device_node *np = fep->pdev->dev.of_node; | |
1624 | if (np) { | |
1625 | const char *mac = of_get_mac_address(np); | |
1626 | if (mac) | |
1627 | iap = (unsigned char *) mac; | |
1628 | } | |
1629 | } | |
ca2cc333 | 1630 | |
49da97dc | 1631 | /* |
ca2cc333 | 1632 | * 3) from flash or fuse (via platform data) |
49da97dc SG |
1633 | */ |
1634 | if (!is_valid_ether_addr(iap)) { | |
1635 | #ifdef CONFIG_M5272 | |
1636 | if (FEC_FLASHMAC) | |
1637 | iap = (unsigned char *)FEC_FLASHMAC; | |
1638 | #else | |
1639 | if (pdata) | |
589efdc7 | 1640 | iap = (unsigned char *)&pdata->mac; |
49da97dc SG |
1641 | #endif |
1642 | } | |
1643 | ||
1644 | /* | |
ca2cc333 | 1645 | * 4) FEC mac registers set by bootloader |
49da97dc SG |
1646 | */ |
1647 | if (!is_valid_ether_addr(iap)) { | |
7d7628f3 DC |
1648 | *((__be32 *) &tmpaddr[0]) = |
1649 | cpu_to_be32(readl(fep->hwp + FEC_ADDR_LOW)); | |
1650 | *((__be16 *) &tmpaddr[4]) = | |
1651 | cpu_to_be16(readl(fep->hwp + FEC_ADDR_HIGH) >> 16); | |
e6b043d5 | 1652 | iap = &tmpaddr[0]; |
1da177e4 LT |
1653 | } |
1654 | ||
ff5b2fab LS |
1655 | /* |
1656 | * 5) random mac address | |
1657 | */ | |
1658 | if (!is_valid_ether_addr(iap)) { | |
1659 | /* Report it and use a random ethernet address instead */ | |
1660 | netdev_err(ndev, "Invalid MAC address: %pM\n", iap); | |
1661 | eth_hw_addr_random(ndev); | |
1662 | netdev_info(ndev, "Using random MAC address: %pM\n", | |
1663 | ndev->dev_addr); | |
1664 | return; | |
1665 | } | |
1666 | ||
c556167f | 1667 | memcpy(ndev->dev_addr, iap, ETH_ALEN); |
1da177e4 | 1668 | |
49da97dc SG |
1669 | /* Adjust MAC if using macaddr */ |
1670 | if (iap == macaddr) | |
43af940c | 1671 | ndev->dev_addr[ETH_ALEN-1] = macaddr[ETH_ALEN-1] + fep->dev_id; |
1da177e4 LT |
1672 | } |
1673 | ||
e6b043d5 | 1674 | /* ------------------------------------------------------------------------- */ |
1da177e4 | 1675 | |
e6b043d5 BW |
1676 | /* |
1677 | * Phy section | |
1678 | */ | |
c556167f | 1679 | static void fec_enet_adjust_link(struct net_device *ndev) |
1da177e4 | 1680 | { |
c556167f | 1681 | struct fec_enet_private *fep = netdev_priv(ndev); |
e6b043d5 | 1682 | struct phy_device *phy_dev = fep->phy_dev; |
e6b043d5 | 1683 | int status_change = 0; |
1da177e4 | 1684 | |
e6b043d5 BW |
1685 | /* Prevent a state halted on mii error */ |
1686 | if (fep->mii_timeout && phy_dev->state == PHY_HALTED) { | |
1687 | phy_dev->state = PHY_RESUMING; | |
54309fa6 | 1688 | return; |
e6b043d5 | 1689 | } |
1da177e4 | 1690 | |
8ce5624f RK |
1691 | /* |
1692 | * If the netdev is down, or is going down, we're not interested | |
1693 | * in link state events, so just mark our idea of the link as down | |
1694 | * and ignore the event. | |
1695 | */ | |
1696 | if (!netif_running(ndev) || !netif_device_present(ndev)) { | |
1697 | fep->link = 0; | |
1698 | } else if (phy_dev->link) { | |
d97e7497 | 1699 | if (!fep->link) { |
6ea0722f | 1700 | fep->link = phy_dev->link; |
e6b043d5 BW |
1701 | status_change = 1; |
1702 | } | |
1da177e4 | 1703 | |
ef83337d RK |
1704 | if (fep->full_duplex != phy_dev->duplex) { |
1705 | fep->full_duplex = phy_dev->duplex; | |
d97e7497 | 1706 | status_change = 1; |
ef83337d | 1707 | } |
d97e7497 LS |
1708 | |
1709 | if (phy_dev->speed != fep->speed) { | |
1710 | fep->speed = phy_dev->speed; | |
1711 | status_change = 1; | |
1712 | } | |
1713 | ||
1714 | /* if any of the above changed restart the FEC */ | |
dbc64a8e | 1715 | if (status_change) { |
dbc64a8e | 1716 | napi_disable(&fep->napi); |
dbc64a8e | 1717 | netif_tx_lock_bh(ndev); |
ef83337d | 1718 | fec_restart(ndev); |
dbc64a8e | 1719 | netif_wake_queue(ndev); |
6af42d42 | 1720 | netif_tx_unlock_bh(ndev); |
dbc64a8e | 1721 | napi_enable(&fep->napi); |
dbc64a8e | 1722 | } |
d97e7497 LS |
1723 | } else { |
1724 | if (fep->link) { | |
f208ce10 RK |
1725 | napi_disable(&fep->napi); |
1726 | netif_tx_lock_bh(ndev); | |
c556167f | 1727 | fec_stop(ndev); |
f208ce10 RK |
1728 | netif_tx_unlock_bh(ndev); |
1729 | napi_enable(&fep->napi); | |
8d7ed0f0 | 1730 | fep->link = phy_dev->link; |
d97e7497 LS |
1731 | status_change = 1; |
1732 | } | |
1da177e4 | 1733 | } |
6aa20a22 | 1734 | |
e6b043d5 BW |
1735 | if (status_change) |
1736 | phy_print_status(phy_dev); | |
1737 | } | |
1da177e4 | 1738 | |
e6b043d5 | 1739 | static int fec_enet_mdio_read(struct mii_bus *bus, int mii_id, int regnum) |
1da177e4 | 1740 | { |
e6b043d5 | 1741 | struct fec_enet_private *fep = bus->priv; |
8fff755e | 1742 | struct device *dev = &fep->pdev->dev; |
97b72e43 | 1743 | unsigned long time_left; |
8fff755e AL |
1744 | int ret = 0; |
1745 | ||
1746 | ret = pm_runtime_get_sync(dev); | |
b0c6ce24 | 1747 | if (ret < 0) |
8fff755e | 1748 | return ret; |
1da177e4 | 1749 | |
e6b043d5 | 1750 | fep->mii_timeout = 0; |
aac27c7a | 1751 | reinit_completion(&fep->mdio_done); |
e6b043d5 BW |
1752 | |
1753 | /* start a read op */ | |
1754 | writel(FEC_MMFR_ST | FEC_MMFR_OP_READ | | |
1755 | FEC_MMFR_PA(mii_id) | FEC_MMFR_RA(regnum) | | |
1756 | FEC_MMFR_TA, fep->hwp + FEC_MII_DATA); | |
1757 | ||
1758 | /* wait for end of transfer */ | |
97b72e43 BS |
1759 | time_left = wait_for_completion_timeout(&fep->mdio_done, |
1760 | usecs_to_jiffies(FEC_MII_TIMEOUT)); | |
1761 | if (time_left == 0) { | |
1762 | fep->mii_timeout = 1; | |
31b7720c | 1763 | netdev_err(fep->netdev, "MDIO read timeout\n"); |
8fff755e AL |
1764 | ret = -ETIMEDOUT; |
1765 | goto out; | |
1da177e4 | 1766 | } |
1da177e4 | 1767 | |
8fff755e AL |
1768 | ret = FEC_MMFR_DATA(readl(fep->hwp + FEC_MII_DATA)); |
1769 | ||
1770 | out: | |
1771 | pm_runtime_mark_last_busy(dev); | |
1772 | pm_runtime_put_autosuspend(dev); | |
1773 | ||
1774 | return ret; | |
7dd6a2aa | 1775 | } |
6aa20a22 | 1776 | |
e6b043d5 BW |
1777 | static int fec_enet_mdio_write(struct mii_bus *bus, int mii_id, int regnum, |
1778 | u16 value) | |
1da177e4 | 1779 | { |
e6b043d5 | 1780 | struct fec_enet_private *fep = bus->priv; |
8fff755e | 1781 | struct device *dev = &fep->pdev->dev; |
97b72e43 | 1782 | unsigned long time_left; |
42ea4457 | 1783 | int ret; |
8fff755e AL |
1784 | |
1785 | ret = pm_runtime_get_sync(dev); | |
b0c6ce24 | 1786 | if (ret < 0) |
8fff755e | 1787 | return ret; |
42ea4457 MS |
1788 | else |
1789 | ret = 0; | |
1da177e4 | 1790 | |
e6b043d5 | 1791 | fep->mii_timeout = 0; |
aac27c7a | 1792 | reinit_completion(&fep->mdio_done); |
1da177e4 | 1793 | |
862f0982 SG |
1794 | /* start a write op */ |
1795 | writel(FEC_MMFR_ST | FEC_MMFR_OP_WRITE | | |
e6b043d5 BW |
1796 | FEC_MMFR_PA(mii_id) | FEC_MMFR_RA(regnum) | |
1797 | FEC_MMFR_TA | FEC_MMFR_DATA(value), | |
1798 | fep->hwp + FEC_MII_DATA); | |
1799 | ||
1800 | /* wait for end of transfer */ | |
97b72e43 BS |
1801 | time_left = wait_for_completion_timeout(&fep->mdio_done, |
1802 | usecs_to_jiffies(FEC_MII_TIMEOUT)); | |
1803 | if (time_left == 0) { | |
1804 | fep->mii_timeout = 1; | |
31b7720c | 1805 | netdev_err(fep->netdev, "MDIO write timeout\n"); |
8fff755e | 1806 | ret = -ETIMEDOUT; |
e6b043d5 | 1807 | } |
1da177e4 | 1808 | |
8fff755e AL |
1809 | pm_runtime_mark_last_busy(dev); |
1810 | pm_runtime_put_autosuspend(dev); | |
1811 | ||
1812 | return ret; | |
e6b043d5 | 1813 | } |
1da177e4 | 1814 | |
e8fcfcd5 NA |
1815 | static int fec_enet_clk_enable(struct net_device *ndev, bool enable) |
1816 | { | |
1817 | struct fec_enet_private *fep = netdev_priv(ndev); | |
1818 | int ret; | |
1819 | ||
1820 | if (enable) { | |
1821 | ret = clk_prepare_enable(fep->clk_ahb); | |
1822 | if (ret) | |
1823 | return ret; | |
e8fcfcd5 NA |
1824 | if (fep->clk_enet_out) { |
1825 | ret = clk_prepare_enable(fep->clk_enet_out); | |
1826 | if (ret) | |
1827 | goto failed_clk_enet_out; | |
1828 | } | |
1829 | if (fep->clk_ptp) { | |
91c0d987 | 1830 | mutex_lock(&fep->ptp_clk_mutex); |
e8fcfcd5 | 1831 | ret = clk_prepare_enable(fep->clk_ptp); |
91c0d987 NA |
1832 | if (ret) { |
1833 | mutex_unlock(&fep->ptp_clk_mutex); | |
e8fcfcd5 | 1834 | goto failed_clk_ptp; |
91c0d987 NA |
1835 | } else { |
1836 | fep->ptp_clk_on = true; | |
1837 | } | |
1838 | mutex_unlock(&fep->ptp_clk_mutex); | |
e8fcfcd5 | 1839 | } |
9b5330ed FD |
1840 | if (fep->clk_ref) { |
1841 | ret = clk_prepare_enable(fep->clk_ref); | |
1842 | if (ret) | |
1843 | goto failed_clk_ref; | |
1844 | } | |
e8fcfcd5 NA |
1845 | } else { |
1846 | clk_disable_unprepare(fep->clk_ahb); | |
e8fcfcd5 NA |
1847 | if (fep->clk_enet_out) |
1848 | clk_disable_unprepare(fep->clk_enet_out); | |
91c0d987 NA |
1849 | if (fep->clk_ptp) { |
1850 | mutex_lock(&fep->ptp_clk_mutex); | |
e8fcfcd5 | 1851 | clk_disable_unprepare(fep->clk_ptp); |
91c0d987 NA |
1852 | fep->ptp_clk_on = false; |
1853 | mutex_unlock(&fep->ptp_clk_mutex); | |
1854 | } | |
9b5330ed FD |
1855 | if (fep->clk_ref) |
1856 | clk_disable_unprepare(fep->clk_ref); | |
e8fcfcd5 NA |
1857 | } |
1858 | ||
1859 | return 0; | |
9b5330ed FD |
1860 | |
1861 | failed_clk_ref: | |
1862 | if (fep->clk_ref) | |
1863 | clk_disable_unprepare(fep->clk_ref); | |
e8fcfcd5 NA |
1864 | failed_clk_ptp: |
1865 | if (fep->clk_enet_out) | |
1866 | clk_disable_unprepare(fep->clk_enet_out); | |
1867 | failed_clk_enet_out: | |
e8fcfcd5 NA |
1868 | clk_disable_unprepare(fep->clk_ahb); |
1869 | ||
1870 | return ret; | |
1871 | } | |
1872 | ||
c556167f | 1873 | static int fec_enet_mii_probe(struct net_device *ndev) |
562d2f8c | 1874 | { |
c556167f | 1875 | struct fec_enet_private *fep = netdev_priv(ndev); |
e6b043d5 | 1876 | struct phy_device *phy_dev = NULL; |
6fcc040f GU |
1877 | char mdio_bus_id[MII_BUS_ID_SIZE]; |
1878 | char phy_name[MII_BUS_ID_SIZE + 3]; | |
1879 | int phy_id; | |
43af940c | 1880 | int dev_id = fep->dev_id; |
562d2f8c | 1881 | |
418bd0d4 BW |
1882 | fep->phy_dev = NULL; |
1883 | ||
407066f8 UKK |
1884 | if (fep->phy_node) { |
1885 | phy_dev = of_phy_connect(ndev, fep->phy_node, | |
1886 | &fec_enet_adjust_link, 0, | |
1887 | fep->phy_interface); | |
213a9922 NA |
1888 | if (!phy_dev) |
1889 | return -ENODEV; | |
407066f8 UKK |
1890 | } else { |
1891 | /* check for attached phy */ | |
1892 | for (phy_id = 0; (phy_id < PHY_MAX_ADDR); phy_id++) { | |
7f854420 | 1893 | if (!mdiobus_is_registered_device(fep->mii_bus, phy_id)) |
407066f8 UKK |
1894 | continue; |
1895 | if (dev_id--) | |
1896 | continue; | |
949bdd20 | 1897 | strlcpy(mdio_bus_id, fep->mii_bus->id, MII_BUS_ID_SIZE); |
407066f8 UKK |
1898 | break; |
1899 | } | |
1da177e4 | 1900 | |
407066f8 UKK |
1901 | if (phy_id >= PHY_MAX_ADDR) { |
1902 | netdev_info(ndev, "no PHY, assuming direct connection to switch\n"); | |
949bdd20 | 1903 | strlcpy(mdio_bus_id, "fixed-0", MII_BUS_ID_SIZE); |
407066f8 UKK |
1904 | phy_id = 0; |
1905 | } | |
1906 | ||
1907 | snprintf(phy_name, sizeof(phy_name), | |
1908 | PHY_ID_FMT, mdio_bus_id, phy_id); | |
1909 | phy_dev = phy_connect(ndev, phy_name, &fec_enet_adjust_link, | |
1910 | fep->phy_interface); | |
6fcc040f GU |
1911 | } |
1912 | ||
6fcc040f | 1913 | if (IS_ERR(phy_dev)) { |
31b7720c | 1914 | netdev_err(ndev, "could not attach to PHY\n"); |
6fcc040f | 1915 | return PTR_ERR(phy_dev); |
e6b043d5 | 1916 | } |
1da177e4 | 1917 | |
e6b043d5 | 1918 | /* mask with MAC supported features */ |
6b7e4008 | 1919 | if (fep->quirks & FEC_QUIRK_HAS_GBIT) { |
230dec61 | 1920 | phy_dev->supported &= PHY_GBIT_FEATURES; |
b44592ff | 1921 | phy_dev->supported &= ~SUPPORTED_1000baseT_Half; |
d1391930 | 1922 | #if !defined(CONFIG_M5272) |
baa70a5c | 1923 | phy_dev->supported |= SUPPORTED_Pause; |
d1391930 | 1924 | #endif |
baa70a5c | 1925 | } |
230dec61 SG |
1926 | else |
1927 | phy_dev->supported &= PHY_BASIC_FEATURES; | |
1928 | ||
e6b043d5 | 1929 | phy_dev->advertising = phy_dev->supported; |
1da177e4 | 1930 | |
e6b043d5 BW |
1931 | fep->phy_dev = phy_dev; |
1932 | fep->link = 0; | |
1933 | fep->full_duplex = 0; | |
1da177e4 | 1934 | |
2220943a | 1935 | phy_attached_info(phy_dev); |
418bd0d4 | 1936 | |
e6b043d5 | 1937 | return 0; |
1da177e4 LT |
1938 | } |
1939 | ||
e6b043d5 | 1940 | static int fec_enet_mii_init(struct platform_device *pdev) |
562d2f8c | 1941 | { |
b5680e0b | 1942 | static struct mii_bus *fec0_mii_bus; |
c556167f UKK |
1943 | struct net_device *ndev = platform_get_drvdata(pdev); |
1944 | struct fec_enet_private *fep = netdev_priv(ndev); | |
407066f8 | 1945 | struct device_node *node; |
e7f4dc35 | 1946 | int err = -ENXIO; |
63c60732 | 1947 | u32 mii_speed, holdtime; |
6b265293 | 1948 | |
b5680e0b | 1949 | /* |
3d125f9c | 1950 | * The i.MX28 dual fec interfaces are not equal. |
b5680e0b SG |
1951 | * Here are the differences: |
1952 | * | |
1953 | * - fec0 supports MII & RMII modes while fec1 only supports RMII | |
1954 | * - fec0 acts as the 1588 time master while fec1 is slave | |
1955 | * - external phys can only be configured by fec0 | |
1956 | * | |
1957 | * That is to say fec1 can not work independently. It only works | |
1958 | * when fec0 is working. The reason behind this design is that the | |
1959 | * second interface is added primarily for Switch mode. | |
1960 | * | |
1961 | * Because of the last point above, both phys are attached on fec0 | |
1962 | * mdio interface in board design, and need to be configured by | |
1963 | * fec0 mii_bus. | |
1964 | */ | |
3d125f9c | 1965 | if ((fep->quirks & FEC_QUIRK_SINGLE_MDIO) && fep->dev_id > 0) { |
b5680e0b | 1966 | /* fec1 uses fec0 mii_bus */ |
e163cc97 LW |
1967 | if (mii_cnt && fec0_mii_bus) { |
1968 | fep->mii_bus = fec0_mii_bus; | |
1969 | mii_cnt++; | |
1970 | return 0; | |
1971 | } | |
1972 | return -ENOENT; | |
b5680e0b SG |
1973 | } |
1974 | ||
e6b043d5 | 1975 | fep->mii_timeout = 0; |
1da177e4 | 1976 | |
e6b043d5 BW |
1977 | /* |
1978 | * Set MII speed to 2.5 MHz (= clk_get_rate() / 2 * phy_speed) | |
230dec61 SG |
1979 | * |
1980 | * The formula for FEC MDC is 'ref_freq / (MII_SPEED x 2)' while | |
1981 | * for ENET-MAC is 'ref_freq / ((MII_SPEED + 1) x 2)'. The i.MX28 | |
1982 | * Reference Manual has an error on this, and gets fixed on i.MX6Q | |
1983 | * document. | |
e6b043d5 | 1984 | */ |
63c60732 | 1985 | mii_speed = DIV_ROUND_UP(clk_get_rate(fep->clk_ipg), 5000000); |
6b7e4008 | 1986 | if (fep->quirks & FEC_QUIRK_ENET_MAC) |
63c60732 UKK |
1987 | mii_speed--; |
1988 | if (mii_speed > 63) { | |
1989 | dev_err(&pdev->dev, | |
1990 | "fec clock (%lu) to fast to get right mii speed\n", | |
1991 | clk_get_rate(fep->clk_ipg)); | |
1992 | err = -EINVAL; | |
1993 | goto err_out; | |
1994 | } | |
1995 | ||
1996 | /* | |
1997 | * The i.MX28 and i.MX6 types have another filed in the MSCR (aka | |
1998 | * MII_SPEED) register that defines the MDIO output hold time. Earlier | |
1999 | * versions are RAZ there, so just ignore the difference and write the | |
2000 | * register always. | |
2001 | * The minimal hold time according to IEE802.3 (clause 22) is 10 ns. | |
2002 | * HOLDTIME + 1 is the number of clk cycles the fec is holding the | |
2003 | * output. | |
2004 | * The HOLDTIME bitfield takes values between 0 and 7 (inclusive). | |
2005 | * Given that ceil(clkrate / 5000000) <= 64, the calculation for | |
2006 | * holdtime cannot result in a value greater than 3. | |
2007 | */ | |
2008 | holdtime = DIV_ROUND_UP(clk_get_rate(fep->clk_ipg), 100000000) - 1; | |
2009 | ||
2010 | fep->phy_speed = mii_speed << 1 | holdtime << 8; | |
2011 | ||
e6b043d5 | 2012 | writel(fep->phy_speed, fep->hwp + FEC_MII_SPEED); |
1da177e4 | 2013 | |
e6b043d5 BW |
2014 | fep->mii_bus = mdiobus_alloc(); |
2015 | if (fep->mii_bus == NULL) { | |
2016 | err = -ENOMEM; | |
2017 | goto err_out; | |
1da177e4 LT |
2018 | } |
2019 | ||
e6b043d5 BW |
2020 | fep->mii_bus->name = "fec_enet_mii_bus"; |
2021 | fep->mii_bus->read = fec_enet_mdio_read; | |
2022 | fep->mii_bus->write = fec_enet_mdio_write; | |
391420f7 FF |
2023 | snprintf(fep->mii_bus->id, MII_BUS_ID_SIZE, "%s-%x", |
2024 | pdev->name, fep->dev_id + 1); | |
e6b043d5 BW |
2025 | fep->mii_bus->priv = fep; |
2026 | fep->mii_bus->parent = &pdev->dev; | |
2027 | ||
407066f8 UKK |
2028 | node = of_get_child_by_name(pdev->dev.of_node, "mdio"); |
2029 | if (node) { | |
2030 | err = of_mdiobus_register(fep->mii_bus, node); | |
2031 | of_node_put(node); | |
2032 | } else { | |
2033 | err = mdiobus_register(fep->mii_bus); | |
2034 | } | |
2035 | ||
2036 | if (err) | |
e7f4dc35 | 2037 | goto err_out_free_mdiobus; |
1da177e4 | 2038 | |
e163cc97 LW |
2039 | mii_cnt++; |
2040 | ||
b5680e0b | 2041 | /* save fec0 mii_bus */ |
3d125f9c | 2042 | if (fep->quirks & FEC_QUIRK_SINGLE_MDIO) |
b5680e0b SG |
2043 | fec0_mii_bus = fep->mii_bus; |
2044 | ||
e6b043d5 | 2045 | return 0; |
1da177e4 | 2046 | |
e6b043d5 BW |
2047 | err_out_free_mdiobus: |
2048 | mdiobus_free(fep->mii_bus); | |
2049 | err_out: | |
2050 | return err; | |
1da177e4 LT |
2051 | } |
2052 | ||
e6b043d5 | 2053 | static void fec_enet_mii_remove(struct fec_enet_private *fep) |
1da177e4 | 2054 | { |
e163cc97 LW |
2055 | if (--mii_cnt == 0) { |
2056 | mdiobus_unregister(fep->mii_bus); | |
e163cc97 LW |
2057 | mdiobus_free(fep->mii_bus); |
2058 | } | |
1da177e4 LT |
2059 | } |
2060 | ||
c556167f | 2061 | static int fec_enet_get_settings(struct net_device *ndev, |
e6b043d5 | 2062 | struct ethtool_cmd *cmd) |
1da177e4 | 2063 | { |
c556167f | 2064 | struct fec_enet_private *fep = netdev_priv(ndev); |
e6b043d5 | 2065 | struct phy_device *phydev = fep->phy_dev; |
1da177e4 | 2066 | |
e6b043d5 BW |
2067 | if (!phydev) |
2068 | return -ENODEV; | |
1da177e4 | 2069 | |
e6b043d5 | 2070 | return phy_ethtool_gset(phydev, cmd); |
1da177e4 LT |
2071 | } |
2072 | ||
c556167f | 2073 | static int fec_enet_set_settings(struct net_device *ndev, |
e6b043d5 | 2074 | struct ethtool_cmd *cmd) |
1da177e4 | 2075 | { |
c556167f | 2076 | struct fec_enet_private *fep = netdev_priv(ndev); |
e6b043d5 | 2077 | struct phy_device *phydev = fep->phy_dev; |
1da177e4 | 2078 | |
e6b043d5 BW |
2079 | if (!phydev) |
2080 | return -ENODEV; | |
1da177e4 | 2081 | |
e6b043d5 | 2082 | return phy_ethtool_sset(phydev, cmd); |
1da177e4 LT |
2083 | } |
2084 | ||
c556167f | 2085 | static void fec_enet_get_drvinfo(struct net_device *ndev, |
e6b043d5 | 2086 | struct ethtool_drvinfo *info) |
1da177e4 | 2087 | { |
c556167f | 2088 | struct fec_enet_private *fep = netdev_priv(ndev); |
6aa20a22 | 2089 | |
7826d43f JP |
2090 | strlcpy(info->driver, fep->pdev->dev.driver->name, |
2091 | sizeof(info->driver)); | |
2092 | strlcpy(info->version, "Revision: 1.0", sizeof(info->version)); | |
2093 | strlcpy(info->bus_info, dev_name(&ndev->dev), sizeof(info->bus_info)); | |
1da177e4 LT |
2094 | } |
2095 | ||
db65f35f PR |
2096 | static int fec_enet_get_regs_len(struct net_device *ndev) |
2097 | { | |
2098 | struct fec_enet_private *fep = netdev_priv(ndev); | |
2099 | struct resource *r; | |
2100 | int s = 0; | |
2101 | ||
2102 | r = platform_get_resource(fep->pdev, IORESOURCE_MEM, 0); | |
2103 | if (r) | |
2104 | s = resource_size(r); | |
2105 | ||
2106 | return s; | |
2107 | } | |
2108 | ||
2109 | /* List of registers that can be safety be read to dump them with ethtool */ | |
2110 | #if defined(CONFIG_M523x) || defined(CONFIG_M527x) || defined(CONFIG_M528x) || \ | |
05f3b50e | 2111 | defined(CONFIG_M520x) || defined(CONFIG_M532x) || defined(CONFIG_ARM) |
db65f35f PR |
2112 | static u32 fec_enet_register_offset[] = { |
2113 | FEC_IEVENT, FEC_IMASK, FEC_R_DES_ACTIVE_0, FEC_X_DES_ACTIVE_0, | |
2114 | FEC_ECNTRL, FEC_MII_DATA, FEC_MII_SPEED, FEC_MIB_CTRLSTAT, FEC_R_CNTRL, | |
2115 | FEC_X_CNTRL, FEC_ADDR_LOW, FEC_ADDR_HIGH, FEC_OPD, FEC_TXIC0, FEC_TXIC1, | |
2116 | FEC_TXIC2, FEC_RXIC0, FEC_RXIC1, FEC_RXIC2, FEC_HASH_TABLE_HIGH, | |
2117 | FEC_HASH_TABLE_LOW, FEC_GRP_HASH_TABLE_HIGH, FEC_GRP_HASH_TABLE_LOW, | |
2118 | FEC_X_WMRK, FEC_R_BOUND, FEC_R_FSTART, FEC_R_DES_START_1, | |
2119 | FEC_X_DES_START_1, FEC_R_BUFF_SIZE_1, FEC_R_DES_START_2, | |
2120 | FEC_X_DES_START_2, FEC_R_BUFF_SIZE_2, FEC_R_DES_START_0, | |
2121 | FEC_X_DES_START_0, FEC_R_BUFF_SIZE_0, FEC_R_FIFO_RSFL, FEC_R_FIFO_RSEM, | |
2122 | FEC_R_FIFO_RAEM, FEC_R_FIFO_RAFL, FEC_RACC, FEC_RCMR_1, FEC_RCMR_2, | |
2123 | FEC_DMA_CFG_1, FEC_DMA_CFG_2, FEC_R_DES_ACTIVE_1, FEC_X_DES_ACTIVE_1, | |
2124 | FEC_R_DES_ACTIVE_2, FEC_X_DES_ACTIVE_2, FEC_QOS_SCHEME, | |
2125 | RMON_T_DROP, RMON_T_PACKETS, RMON_T_BC_PKT, RMON_T_MC_PKT, | |
2126 | RMON_T_CRC_ALIGN, RMON_T_UNDERSIZE, RMON_T_OVERSIZE, RMON_T_FRAG, | |
2127 | RMON_T_JAB, RMON_T_COL, RMON_T_P64, RMON_T_P65TO127, RMON_T_P128TO255, | |
2128 | RMON_T_P256TO511, RMON_T_P512TO1023, RMON_T_P1024TO2047, | |
2129 | RMON_T_P_GTE2048, RMON_T_OCTETS, | |
2130 | IEEE_T_DROP, IEEE_T_FRAME_OK, IEEE_T_1COL, IEEE_T_MCOL, IEEE_T_DEF, | |
2131 | IEEE_T_LCOL, IEEE_T_EXCOL, IEEE_T_MACERR, IEEE_T_CSERR, IEEE_T_SQE, | |
2132 | IEEE_T_FDXFC, IEEE_T_OCTETS_OK, | |
2133 | RMON_R_PACKETS, RMON_R_BC_PKT, RMON_R_MC_PKT, RMON_R_CRC_ALIGN, | |
2134 | RMON_R_UNDERSIZE, RMON_R_OVERSIZE, RMON_R_FRAG, RMON_R_JAB, | |
2135 | RMON_R_RESVD_O, RMON_R_P64, RMON_R_P65TO127, RMON_R_P128TO255, | |
2136 | RMON_R_P256TO511, RMON_R_P512TO1023, RMON_R_P1024TO2047, | |
2137 | RMON_R_P_GTE2048, RMON_R_OCTETS, | |
2138 | IEEE_R_DROP, IEEE_R_FRAME_OK, IEEE_R_CRC, IEEE_R_ALIGN, IEEE_R_MACERR, | |
2139 | IEEE_R_FDXFC, IEEE_R_OCTETS_OK | |
2140 | }; | |
2141 | #else | |
2142 | static u32 fec_enet_register_offset[] = { | |
2143 | FEC_ECNTRL, FEC_IEVENT, FEC_IMASK, FEC_IVEC, FEC_R_DES_ACTIVE_0, | |
2144 | FEC_R_DES_ACTIVE_1, FEC_R_DES_ACTIVE_2, FEC_X_DES_ACTIVE_0, | |
2145 | FEC_X_DES_ACTIVE_1, FEC_X_DES_ACTIVE_2, FEC_MII_DATA, FEC_MII_SPEED, | |
2146 | FEC_R_BOUND, FEC_R_FSTART, FEC_X_WMRK, FEC_X_FSTART, FEC_R_CNTRL, | |
2147 | FEC_MAX_FRM_LEN, FEC_X_CNTRL, FEC_ADDR_LOW, FEC_ADDR_HIGH, | |
2148 | FEC_GRP_HASH_TABLE_HIGH, FEC_GRP_HASH_TABLE_LOW, FEC_R_DES_START_0, | |
2149 | FEC_R_DES_START_1, FEC_R_DES_START_2, FEC_X_DES_START_0, | |
2150 | FEC_X_DES_START_1, FEC_X_DES_START_2, FEC_R_BUFF_SIZE_0, | |
2151 | FEC_R_BUFF_SIZE_1, FEC_R_BUFF_SIZE_2 | |
2152 | }; | |
2153 | #endif | |
2154 | ||
2155 | static void fec_enet_get_regs(struct net_device *ndev, | |
2156 | struct ethtool_regs *regs, void *regbuf) | |
2157 | { | |
2158 | struct fec_enet_private *fep = netdev_priv(ndev); | |
2159 | u32 __iomem *theregs = (u32 __iomem *)fep->hwp; | |
2160 | u32 *buf = (u32 *)regbuf; | |
2161 | u32 i, off; | |
2162 | ||
2163 | memset(buf, 0, regs->len); | |
2164 | ||
2165 | for (i = 0; i < ARRAY_SIZE(fec_enet_register_offset); i++) { | |
2166 | off = fec_enet_register_offset[i] / 4; | |
2167 | buf[off] = readl(&theregs[off]); | |
2168 | } | |
2169 | } | |
2170 | ||
5ebae489 FL |
2171 | static int fec_enet_get_ts_info(struct net_device *ndev, |
2172 | struct ethtool_ts_info *info) | |
2173 | { | |
2174 | struct fec_enet_private *fep = netdev_priv(ndev); | |
2175 | ||
2176 | if (fep->bufdesc_ex) { | |
2177 | ||
2178 | info->so_timestamping = SOF_TIMESTAMPING_TX_SOFTWARE | | |
2179 | SOF_TIMESTAMPING_RX_SOFTWARE | | |
2180 | SOF_TIMESTAMPING_SOFTWARE | | |
2181 | SOF_TIMESTAMPING_TX_HARDWARE | | |
2182 | SOF_TIMESTAMPING_RX_HARDWARE | | |
2183 | SOF_TIMESTAMPING_RAW_HARDWARE; | |
2184 | if (fep->ptp_clock) | |
2185 | info->phc_index = ptp_clock_index(fep->ptp_clock); | |
2186 | else | |
2187 | info->phc_index = -1; | |
2188 | ||
2189 | info->tx_types = (1 << HWTSTAMP_TX_OFF) | | |
2190 | (1 << HWTSTAMP_TX_ON); | |
2191 | ||
2192 | info->rx_filters = (1 << HWTSTAMP_FILTER_NONE) | | |
2193 | (1 << HWTSTAMP_FILTER_ALL); | |
2194 | return 0; | |
2195 | } else { | |
2196 | return ethtool_op_get_ts_info(ndev, info); | |
2197 | } | |
2198 | } | |
2199 | ||
d1391930 GR |
2200 | #if !defined(CONFIG_M5272) |
2201 | ||
baa70a5c FL |
2202 | static void fec_enet_get_pauseparam(struct net_device *ndev, |
2203 | struct ethtool_pauseparam *pause) | |
2204 | { | |
2205 | struct fec_enet_private *fep = netdev_priv(ndev); | |
2206 | ||
2207 | pause->autoneg = (fep->pause_flag & FEC_PAUSE_FLAG_AUTONEG) != 0; | |
2208 | pause->tx_pause = (fep->pause_flag & FEC_PAUSE_FLAG_ENABLE) != 0; | |
2209 | pause->rx_pause = pause->tx_pause; | |
2210 | } | |
2211 | ||
2212 | static int fec_enet_set_pauseparam(struct net_device *ndev, | |
2213 | struct ethtool_pauseparam *pause) | |
2214 | { | |
2215 | struct fec_enet_private *fep = netdev_priv(ndev); | |
2216 | ||
0b146ca8 RK |
2217 | if (!fep->phy_dev) |
2218 | return -ENODEV; | |
2219 | ||
baa70a5c FL |
2220 | if (pause->tx_pause != pause->rx_pause) { |
2221 | netdev_info(ndev, | |
2222 | "hardware only support enable/disable both tx and rx"); | |
2223 | return -EINVAL; | |
2224 | } | |
2225 | ||
2226 | fep->pause_flag = 0; | |
2227 | ||
2228 | /* tx pause must be same as rx pause */ | |
2229 | fep->pause_flag |= pause->rx_pause ? FEC_PAUSE_FLAG_ENABLE : 0; | |
2230 | fep->pause_flag |= pause->autoneg ? FEC_PAUSE_FLAG_AUTONEG : 0; | |
2231 | ||
2232 | if (pause->rx_pause || pause->autoneg) { | |
2233 | fep->phy_dev->supported |= ADVERTISED_Pause; | |
2234 | fep->phy_dev->advertising |= ADVERTISED_Pause; | |
2235 | } else { | |
2236 | fep->phy_dev->supported &= ~ADVERTISED_Pause; | |
2237 | fep->phy_dev->advertising &= ~ADVERTISED_Pause; | |
2238 | } | |
2239 | ||
2240 | if (pause->autoneg) { | |
2241 | if (netif_running(ndev)) | |
2242 | fec_stop(ndev); | |
2243 | phy_start_aneg(fep->phy_dev); | |
2244 | } | |
dbc64a8e | 2245 | if (netif_running(ndev)) { |
dbc64a8e | 2246 | napi_disable(&fep->napi); |
dbc64a8e | 2247 | netif_tx_lock_bh(ndev); |
ef83337d | 2248 | fec_restart(ndev); |
dbc64a8e | 2249 | netif_wake_queue(ndev); |
6af42d42 | 2250 | netif_tx_unlock_bh(ndev); |
dbc64a8e | 2251 | napi_enable(&fep->napi); |
dbc64a8e | 2252 | } |
baa70a5c FL |
2253 | |
2254 | return 0; | |
2255 | } | |
2256 | ||
38ae92dc CH |
2257 | static const struct fec_stat { |
2258 | char name[ETH_GSTRING_LEN]; | |
2259 | u16 offset; | |
2260 | } fec_stats[] = { | |
2261 | /* RMON TX */ | |
2262 | { "tx_dropped", RMON_T_DROP }, | |
2263 | { "tx_packets", RMON_T_PACKETS }, | |
2264 | { "tx_broadcast", RMON_T_BC_PKT }, | |
2265 | { "tx_multicast", RMON_T_MC_PKT }, | |
2266 | { "tx_crc_errors", RMON_T_CRC_ALIGN }, | |
2267 | { "tx_undersize", RMON_T_UNDERSIZE }, | |
2268 | { "tx_oversize", RMON_T_OVERSIZE }, | |
2269 | { "tx_fragment", RMON_T_FRAG }, | |
2270 | { "tx_jabber", RMON_T_JAB }, | |
2271 | { "tx_collision", RMON_T_COL }, | |
2272 | { "tx_64byte", RMON_T_P64 }, | |
2273 | { "tx_65to127byte", RMON_T_P65TO127 }, | |
2274 | { "tx_128to255byte", RMON_T_P128TO255 }, | |
2275 | { "tx_256to511byte", RMON_T_P256TO511 }, | |
2276 | { "tx_512to1023byte", RMON_T_P512TO1023 }, | |
2277 | { "tx_1024to2047byte", RMON_T_P1024TO2047 }, | |
2278 | { "tx_GTE2048byte", RMON_T_P_GTE2048 }, | |
2279 | { "tx_octets", RMON_T_OCTETS }, | |
2280 | ||
2281 | /* IEEE TX */ | |
2282 | { "IEEE_tx_drop", IEEE_T_DROP }, | |
2283 | { "IEEE_tx_frame_ok", IEEE_T_FRAME_OK }, | |
2284 | { "IEEE_tx_1col", IEEE_T_1COL }, | |
2285 | { "IEEE_tx_mcol", IEEE_T_MCOL }, | |
2286 | { "IEEE_tx_def", IEEE_T_DEF }, | |
2287 | { "IEEE_tx_lcol", IEEE_T_LCOL }, | |
2288 | { "IEEE_tx_excol", IEEE_T_EXCOL }, | |
2289 | { "IEEE_tx_macerr", IEEE_T_MACERR }, | |
2290 | { "IEEE_tx_cserr", IEEE_T_CSERR }, | |
2291 | { "IEEE_tx_sqe", IEEE_T_SQE }, | |
2292 | { "IEEE_tx_fdxfc", IEEE_T_FDXFC }, | |
2293 | { "IEEE_tx_octets_ok", IEEE_T_OCTETS_OK }, | |
2294 | ||
2295 | /* RMON RX */ | |
2296 | { "rx_packets", RMON_R_PACKETS }, | |
2297 | { "rx_broadcast", RMON_R_BC_PKT }, | |
2298 | { "rx_multicast", RMON_R_MC_PKT }, | |
2299 | { "rx_crc_errors", RMON_R_CRC_ALIGN }, | |
2300 | { "rx_undersize", RMON_R_UNDERSIZE }, | |
2301 | { "rx_oversize", RMON_R_OVERSIZE }, | |
2302 | { "rx_fragment", RMON_R_FRAG }, | |
2303 | { "rx_jabber", RMON_R_JAB }, | |
2304 | { "rx_64byte", RMON_R_P64 }, | |
2305 | { "rx_65to127byte", RMON_R_P65TO127 }, | |
2306 | { "rx_128to255byte", RMON_R_P128TO255 }, | |
2307 | { "rx_256to511byte", RMON_R_P256TO511 }, | |
2308 | { "rx_512to1023byte", RMON_R_P512TO1023 }, | |
2309 | { "rx_1024to2047byte", RMON_R_P1024TO2047 }, | |
2310 | { "rx_GTE2048byte", RMON_R_P_GTE2048 }, | |
2311 | { "rx_octets", RMON_R_OCTETS }, | |
2312 | ||
2313 | /* IEEE RX */ | |
2314 | { "IEEE_rx_drop", IEEE_R_DROP }, | |
2315 | { "IEEE_rx_frame_ok", IEEE_R_FRAME_OK }, | |
2316 | { "IEEE_rx_crc", IEEE_R_CRC }, | |
2317 | { "IEEE_rx_align", IEEE_R_ALIGN }, | |
2318 | { "IEEE_rx_macerr", IEEE_R_MACERR }, | |
2319 | { "IEEE_rx_fdxfc", IEEE_R_FDXFC }, | |
2320 | { "IEEE_rx_octets_ok", IEEE_R_OCTETS_OK }, | |
2321 | }; | |
2322 | ||
2323 | static void fec_enet_get_ethtool_stats(struct net_device *dev, | |
2324 | struct ethtool_stats *stats, u64 *data) | |
2325 | { | |
2326 | struct fec_enet_private *fep = netdev_priv(dev); | |
2327 | int i; | |
2328 | ||
2329 | for (i = 0; i < ARRAY_SIZE(fec_stats); i++) | |
2330 | data[i] = readl(fep->hwp + fec_stats[i].offset); | |
2331 | } | |
2332 | ||
2333 | static void fec_enet_get_strings(struct net_device *netdev, | |
2334 | u32 stringset, u8 *data) | |
2335 | { | |
2336 | int i; | |
2337 | switch (stringset) { | |
2338 | case ETH_SS_STATS: | |
2339 | for (i = 0; i < ARRAY_SIZE(fec_stats); i++) | |
2340 | memcpy(data + i * ETH_GSTRING_LEN, | |
2341 | fec_stats[i].name, ETH_GSTRING_LEN); | |
2342 | break; | |
2343 | } | |
2344 | } | |
2345 | ||
2346 | static int fec_enet_get_sset_count(struct net_device *dev, int sset) | |
2347 | { | |
2348 | switch (sset) { | |
2349 | case ETH_SS_STATS: | |
2350 | return ARRAY_SIZE(fec_stats); | |
2351 | default: | |
2352 | return -EOPNOTSUPP; | |
2353 | } | |
2354 | } | |
d1391930 | 2355 | #endif /* !defined(CONFIG_M5272) */ |
38ae92dc | 2356 | |
32bc9b46 CH |
2357 | static int fec_enet_nway_reset(struct net_device *dev) |
2358 | { | |
2359 | struct fec_enet_private *fep = netdev_priv(dev); | |
2360 | struct phy_device *phydev = fep->phy_dev; | |
2361 | ||
2362 | if (!phydev) | |
2363 | return -ENODEV; | |
2364 | ||
2365 | return genphy_restart_aneg(phydev); | |
2366 | } | |
2367 | ||
d851b47b FD |
2368 | /* ITR clock source is enet system clock (clk_ahb). |
2369 | * TCTT unit is cycle_ns * 64 cycle | |
2370 | * So, the ICTT value = X us / (cycle_ns * 64) | |
2371 | */ | |
2372 | static int fec_enet_us_to_itr_clock(struct net_device *ndev, int us) | |
2373 | { | |
2374 | struct fec_enet_private *fep = netdev_priv(ndev); | |
2375 | ||
2376 | return us * (fep->itr_clk_rate / 64000) / 1000; | |
2377 | } | |
2378 | ||
2379 | /* Set threshold for interrupt coalescing */ | |
2380 | static void fec_enet_itr_coal_set(struct net_device *ndev) | |
2381 | { | |
2382 | struct fec_enet_private *fep = netdev_priv(ndev); | |
d851b47b FD |
2383 | int rx_itr, tx_itr; |
2384 | ||
6b7e4008 | 2385 | if (!(fep->quirks & FEC_QUIRK_HAS_AVB)) |
d851b47b FD |
2386 | return; |
2387 | ||
2388 | /* Must be greater than zero to avoid unpredictable behavior */ | |
2389 | if (!fep->rx_time_itr || !fep->rx_pkts_itr || | |
2390 | !fep->tx_time_itr || !fep->tx_pkts_itr) | |
2391 | return; | |
2392 | ||
2393 | /* Select enet system clock as Interrupt Coalescing | |
2394 | * timer Clock Source | |
2395 | */ | |
2396 | rx_itr = FEC_ITR_CLK_SEL; | |
2397 | tx_itr = FEC_ITR_CLK_SEL; | |
2398 | ||
2399 | /* set ICFT and ICTT */ | |
2400 | rx_itr |= FEC_ITR_ICFT(fep->rx_pkts_itr); | |
2401 | rx_itr |= FEC_ITR_ICTT(fec_enet_us_to_itr_clock(ndev, fep->rx_time_itr)); | |
2402 | tx_itr |= FEC_ITR_ICFT(fep->tx_pkts_itr); | |
2403 | tx_itr |= FEC_ITR_ICTT(fec_enet_us_to_itr_clock(ndev, fep->tx_time_itr)); | |
2404 | ||
2405 | rx_itr |= FEC_ITR_EN; | |
2406 | tx_itr |= FEC_ITR_EN; | |
2407 | ||
2408 | writel(tx_itr, fep->hwp + FEC_TXIC0); | |
2409 | writel(rx_itr, fep->hwp + FEC_RXIC0); | |
2410 | writel(tx_itr, fep->hwp + FEC_TXIC1); | |
2411 | writel(rx_itr, fep->hwp + FEC_RXIC1); | |
2412 | writel(tx_itr, fep->hwp + FEC_TXIC2); | |
2413 | writel(rx_itr, fep->hwp + FEC_RXIC2); | |
2414 | } | |
2415 | ||
2416 | static int | |
2417 | fec_enet_get_coalesce(struct net_device *ndev, struct ethtool_coalesce *ec) | |
2418 | { | |
2419 | struct fec_enet_private *fep = netdev_priv(ndev); | |
d851b47b | 2420 | |
6b7e4008 | 2421 | if (!(fep->quirks & FEC_QUIRK_HAS_AVB)) |
d851b47b FD |
2422 | return -EOPNOTSUPP; |
2423 | ||
2424 | ec->rx_coalesce_usecs = fep->rx_time_itr; | |
2425 | ec->rx_max_coalesced_frames = fep->rx_pkts_itr; | |
2426 | ||
2427 | ec->tx_coalesce_usecs = fep->tx_time_itr; | |
2428 | ec->tx_max_coalesced_frames = fep->tx_pkts_itr; | |
2429 | ||
2430 | return 0; | |
2431 | } | |
2432 | ||
2433 | static int | |
2434 | fec_enet_set_coalesce(struct net_device *ndev, struct ethtool_coalesce *ec) | |
2435 | { | |
2436 | struct fec_enet_private *fep = netdev_priv(ndev); | |
d851b47b FD |
2437 | unsigned int cycle; |
2438 | ||
6b7e4008 | 2439 | if (!(fep->quirks & FEC_QUIRK_HAS_AVB)) |
d851b47b FD |
2440 | return -EOPNOTSUPP; |
2441 | ||
2442 | if (ec->rx_max_coalesced_frames > 255) { | |
2443 | pr_err("Rx coalesced frames exceed hardware limiation"); | |
2444 | return -EINVAL; | |
2445 | } | |
2446 | ||
2447 | if (ec->tx_max_coalesced_frames > 255) { | |
2448 | pr_err("Tx coalesced frame exceed hardware limiation"); | |
2449 | return -EINVAL; | |
2450 | } | |
2451 | ||
2452 | cycle = fec_enet_us_to_itr_clock(ndev, fep->rx_time_itr); | |
2453 | if (cycle > 0xFFFF) { | |
2454 | pr_err("Rx coalesed usec exceeed hardware limiation"); | |
2455 | return -EINVAL; | |
2456 | } | |
2457 | ||
2458 | cycle = fec_enet_us_to_itr_clock(ndev, fep->tx_time_itr); | |
2459 | if (cycle > 0xFFFF) { | |
2460 | pr_err("Rx coalesed usec exceeed hardware limiation"); | |
2461 | return -EINVAL; | |
2462 | } | |
2463 | ||
2464 | fep->rx_time_itr = ec->rx_coalesce_usecs; | |
2465 | fep->rx_pkts_itr = ec->rx_max_coalesced_frames; | |
2466 | ||
2467 | fep->tx_time_itr = ec->tx_coalesce_usecs; | |
2468 | fep->tx_pkts_itr = ec->tx_max_coalesced_frames; | |
2469 | ||
2470 | fec_enet_itr_coal_set(ndev); | |
2471 | ||
2472 | return 0; | |
2473 | } | |
2474 | ||
2475 | static void fec_enet_itr_coal_init(struct net_device *ndev) | |
2476 | { | |
2477 | struct ethtool_coalesce ec; | |
2478 | ||
2479 | ec.rx_coalesce_usecs = FEC_ITR_ICTT_DEFAULT; | |
2480 | ec.rx_max_coalesced_frames = FEC_ITR_ICFT_DEFAULT; | |
2481 | ||
2482 | ec.tx_coalesce_usecs = FEC_ITR_ICTT_DEFAULT; | |
2483 | ec.tx_max_coalesced_frames = FEC_ITR_ICFT_DEFAULT; | |
2484 | ||
2485 | fec_enet_set_coalesce(ndev, &ec); | |
2486 | } | |
2487 | ||
1b7bde6d NA |
2488 | static int fec_enet_get_tunable(struct net_device *netdev, |
2489 | const struct ethtool_tunable *tuna, | |
2490 | void *data) | |
2491 | { | |
2492 | struct fec_enet_private *fep = netdev_priv(netdev); | |
2493 | int ret = 0; | |
2494 | ||
2495 | switch (tuna->id) { | |
2496 | case ETHTOOL_RX_COPYBREAK: | |
2497 | *(u32 *)data = fep->rx_copybreak; | |
2498 | break; | |
2499 | default: | |
2500 | ret = -EINVAL; | |
2501 | break; | |
2502 | } | |
2503 | ||
2504 | return ret; | |
2505 | } | |
2506 | ||
2507 | static int fec_enet_set_tunable(struct net_device *netdev, | |
2508 | const struct ethtool_tunable *tuna, | |
2509 | const void *data) | |
2510 | { | |
2511 | struct fec_enet_private *fep = netdev_priv(netdev); | |
2512 | int ret = 0; | |
2513 | ||
2514 | switch (tuna->id) { | |
2515 | case ETHTOOL_RX_COPYBREAK: | |
2516 | fep->rx_copybreak = *(u32 *)data; | |
2517 | break; | |
2518 | default: | |
2519 | ret = -EINVAL; | |
2520 | break; | |
2521 | } | |
2522 | ||
2523 | return ret; | |
2524 | } | |
2525 | ||
de40ed31 NA |
2526 | static void |
2527 | fec_enet_get_wol(struct net_device *ndev, struct ethtool_wolinfo *wol) | |
2528 | { | |
2529 | struct fec_enet_private *fep = netdev_priv(ndev); | |
2530 | ||
2531 | if (fep->wol_flag & FEC_WOL_HAS_MAGIC_PACKET) { | |
2532 | wol->supported = WAKE_MAGIC; | |
2533 | wol->wolopts = fep->wol_flag & FEC_WOL_FLAG_ENABLE ? WAKE_MAGIC : 0; | |
2534 | } else { | |
2535 | wol->supported = wol->wolopts = 0; | |
2536 | } | |
2537 | } | |
2538 | ||
2539 | static int | |
2540 | fec_enet_set_wol(struct net_device *ndev, struct ethtool_wolinfo *wol) | |
2541 | { | |
2542 | struct fec_enet_private *fep = netdev_priv(ndev); | |
2543 | ||
2544 | if (!(fep->wol_flag & FEC_WOL_HAS_MAGIC_PACKET)) | |
2545 | return -EINVAL; | |
2546 | ||
2547 | if (wol->wolopts & ~WAKE_MAGIC) | |
2548 | return -EINVAL; | |
2549 | ||
2550 | device_set_wakeup_enable(&ndev->dev, wol->wolopts & WAKE_MAGIC); | |
2551 | if (device_may_wakeup(&ndev->dev)) { | |
2552 | fep->wol_flag |= FEC_WOL_FLAG_ENABLE; | |
2553 | if (fep->irq[0] > 0) | |
2554 | enable_irq_wake(fep->irq[0]); | |
2555 | } else { | |
2556 | fep->wol_flag &= (~FEC_WOL_FLAG_ENABLE); | |
2557 | if (fep->irq[0] > 0) | |
2558 | disable_irq_wake(fep->irq[0]); | |
2559 | } | |
2560 | ||
2561 | return 0; | |
2562 | } | |
2563 | ||
9b07be4b | 2564 | static const struct ethtool_ops fec_enet_ethtool_ops = { |
e6b043d5 BW |
2565 | .get_settings = fec_enet_get_settings, |
2566 | .set_settings = fec_enet_set_settings, | |
2567 | .get_drvinfo = fec_enet_get_drvinfo, | |
db65f35f PR |
2568 | .get_regs_len = fec_enet_get_regs_len, |
2569 | .get_regs = fec_enet_get_regs, | |
32bc9b46 | 2570 | .nway_reset = fec_enet_nway_reset, |
c1d7c48f | 2571 | .get_link = ethtool_op_get_link, |
d851b47b FD |
2572 | .get_coalesce = fec_enet_get_coalesce, |
2573 | .set_coalesce = fec_enet_set_coalesce, | |
38ae92dc | 2574 | #ifndef CONFIG_M5272 |
c1d7c48f RK |
2575 | .get_pauseparam = fec_enet_get_pauseparam, |
2576 | .set_pauseparam = fec_enet_set_pauseparam, | |
38ae92dc | 2577 | .get_strings = fec_enet_get_strings, |
c1d7c48f | 2578 | .get_ethtool_stats = fec_enet_get_ethtool_stats, |
38ae92dc CH |
2579 | .get_sset_count = fec_enet_get_sset_count, |
2580 | #endif | |
c1d7c48f | 2581 | .get_ts_info = fec_enet_get_ts_info, |
1b7bde6d NA |
2582 | .get_tunable = fec_enet_get_tunable, |
2583 | .set_tunable = fec_enet_set_tunable, | |
de40ed31 NA |
2584 | .get_wol = fec_enet_get_wol, |
2585 | .set_wol = fec_enet_set_wol, | |
e6b043d5 | 2586 | }; |
1da177e4 | 2587 | |
c556167f | 2588 | static int fec_enet_ioctl(struct net_device *ndev, struct ifreq *rq, int cmd) |
1da177e4 | 2589 | { |
c556167f | 2590 | struct fec_enet_private *fep = netdev_priv(ndev); |
e6b043d5 | 2591 | struct phy_device *phydev = fep->phy_dev; |
1da177e4 | 2592 | |
c556167f | 2593 | if (!netif_running(ndev)) |
e6b043d5 | 2594 | return -EINVAL; |
1da177e4 | 2595 | |
e6b043d5 BW |
2596 | if (!phydev) |
2597 | return -ENODEV; | |
2598 | ||
1d5244d0 BH |
2599 | if (fep->bufdesc_ex) { |
2600 | if (cmd == SIOCSHWTSTAMP) | |
2601 | return fec_ptp_set(ndev, rq); | |
2602 | if (cmd == SIOCGHWTSTAMP) | |
2603 | return fec_ptp_get(ndev, rq); | |
2604 | } | |
ff43da86 | 2605 | |
28b04113 | 2606 | return phy_mii_ioctl(phydev, rq, cmd); |
1da177e4 LT |
2607 | } |
2608 | ||
c556167f | 2609 | static void fec_enet_free_buffers(struct net_device *ndev) |
f0b3fbea | 2610 | { |
c556167f | 2611 | struct fec_enet_private *fep = netdev_priv(ndev); |
da2191e3 | 2612 | unsigned int i; |
f0b3fbea SH |
2613 | struct sk_buff *skb; |
2614 | struct bufdesc *bdp; | |
4d494cdc FD |
2615 | struct fec_enet_priv_tx_q *txq; |
2616 | struct fec_enet_priv_rx_q *rxq; | |
59d0f746 FL |
2617 | unsigned int q; |
2618 | ||
2619 | for (q = 0; q < fep->num_rx_queues; q++) { | |
2620 | rxq = fep->rx_queue[q]; | |
7355f276 TK |
2621 | bdp = rxq->bd.base; |
2622 | for (i = 0; i < rxq->bd.ring_size; i++) { | |
59d0f746 FL |
2623 | skb = rxq->rx_skbuff[i]; |
2624 | rxq->rx_skbuff[i] = NULL; | |
2625 | if (skb) { | |
2626 | dma_unmap_single(&fep->pdev->dev, | |
5cfa3039 | 2627 | fec32_to_cpu(bdp->cbd_bufaddr), |
b64bf4b7 | 2628 | FEC_ENET_RX_FRSIZE - fep->rx_align, |
59d0f746 FL |
2629 | DMA_FROM_DEVICE); |
2630 | dev_kfree_skb(skb); | |
2631 | } | |
7355f276 | 2632 | bdp = fec_enet_get_nextdesc(bdp, &rxq->bd); |
59d0f746 FL |
2633 | } |
2634 | } | |
4d494cdc | 2635 | |
59d0f746 FL |
2636 | for (q = 0; q < fep->num_tx_queues; q++) { |
2637 | txq = fep->tx_queue[q]; | |
7355f276 TK |
2638 | bdp = txq->bd.base; |
2639 | for (i = 0; i < txq->bd.ring_size; i++) { | |
59d0f746 FL |
2640 | kfree(txq->tx_bounce[i]); |
2641 | txq->tx_bounce[i] = NULL; | |
2642 | skb = txq->tx_skbuff[i]; | |
2643 | txq->tx_skbuff[i] = NULL; | |
f0b3fbea | 2644 | dev_kfree_skb(skb); |
730ee360 | 2645 | } |
f0b3fbea | 2646 | } |
59d0f746 | 2647 | } |
f0b3fbea | 2648 | |
59d0f746 FL |
2649 | static void fec_enet_free_queue(struct net_device *ndev) |
2650 | { | |
2651 | struct fec_enet_private *fep = netdev_priv(ndev); | |
2652 | int i; | |
2653 | struct fec_enet_priv_tx_q *txq; | |
2654 | ||
2655 | for (i = 0; i < fep->num_tx_queues; i++) | |
2656 | if (fep->tx_queue[i] && fep->tx_queue[i]->tso_hdrs) { | |
2657 | txq = fep->tx_queue[i]; | |
2658 | dma_free_coherent(NULL, | |
7355f276 | 2659 | txq->bd.ring_size * TSO_HEADER_SIZE, |
59d0f746 FL |
2660 | txq->tso_hdrs, |
2661 | txq->tso_hdrs_dma); | |
2662 | } | |
2663 | ||
2664 | for (i = 0; i < fep->num_rx_queues; i++) | |
1b4b32c6 | 2665 | kfree(fep->rx_queue[i]); |
59d0f746 | 2666 | for (i = 0; i < fep->num_tx_queues; i++) |
1b4b32c6 | 2667 | kfree(fep->tx_queue[i]); |
59d0f746 FL |
2668 | } |
2669 | ||
2670 | static int fec_enet_alloc_queue(struct net_device *ndev) | |
2671 | { | |
2672 | struct fec_enet_private *fep = netdev_priv(ndev); | |
2673 | int i; | |
2674 | int ret = 0; | |
2675 | struct fec_enet_priv_tx_q *txq; | |
2676 | ||
2677 | for (i = 0; i < fep->num_tx_queues; i++) { | |
2678 | txq = kzalloc(sizeof(*txq), GFP_KERNEL); | |
2679 | if (!txq) { | |
2680 | ret = -ENOMEM; | |
2681 | goto alloc_failed; | |
2682 | } | |
2683 | ||
2684 | fep->tx_queue[i] = txq; | |
7355f276 TK |
2685 | txq->bd.ring_size = TX_RING_SIZE; |
2686 | fep->total_tx_ring_size += fep->tx_queue[i]->bd.ring_size; | |
59d0f746 FL |
2687 | |
2688 | txq->tx_stop_threshold = FEC_MAX_SKB_DESCS; | |
2689 | txq->tx_wake_threshold = | |
7355f276 | 2690 | (txq->bd.ring_size - txq->tx_stop_threshold) / 2; |
59d0f746 FL |
2691 | |
2692 | txq->tso_hdrs = dma_alloc_coherent(NULL, | |
7355f276 | 2693 | txq->bd.ring_size * TSO_HEADER_SIZE, |
59d0f746 FL |
2694 | &txq->tso_hdrs_dma, |
2695 | GFP_KERNEL); | |
2696 | if (!txq->tso_hdrs) { | |
2697 | ret = -ENOMEM; | |
2698 | goto alloc_failed; | |
2699 | } | |
8b7c9efa | 2700 | } |
59d0f746 FL |
2701 | |
2702 | for (i = 0; i < fep->num_rx_queues; i++) { | |
2703 | fep->rx_queue[i] = kzalloc(sizeof(*fep->rx_queue[i]), | |
2704 | GFP_KERNEL); | |
2705 | if (!fep->rx_queue[i]) { | |
2706 | ret = -ENOMEM; | |
2707 | goto alloc_failed; | |
2708 | } | |
2709 | ||
7355f276 TK |
2710 | fep->rx_queue[i]->bd.ring_size = RX_RING_SIZE; |
2711 | fep->total_rx_ring_size += fep->rx_queue[i]->bd.ring_size; | |
59d0f746 FL |
2712 | } |
2713 | return ret; | |
2714 | ||
2715 | alloc_failed: | |
2716 | fec_enet_free_queue(ndev); | |
2717 | return ret; | |
f0b3fbea SH |
2718 | } |
2719 | ||
59d0f746 FL |
2720 | static int |
2721 | fec_enet_alloc_rxq_buffers(struct net_device *ndev, unsigned int queue) | |
f0b3fbea | 2722 | { |
c556167f | 2723 | struct fec_enet_private *fep = netdev_priv(ndev); |
da2191e3 | 2724 | unsigned int i; |
f0b3fbea SH |
2725 | struct sk_buff *skb; |
2726 | struct bufdesc *bdp; | |
4d494cdc | 2727 | struct fec_enet_priv_rx_q *rxq; |
f0b3fbea | 2728 | |
59d0f746 | 2729 | rxq = fep->rx_queue[queue]; |
7355f276 TK |
2730 | bdp = rxq->bd.base; |
2731 | for (i = 0; i < rxq->bd.ring_size; i++) { | |
b72061a3 | 2732 | skb = netdev_alloc_skb(ndev, FEC_ENET_RX_FRSIZE); |
ffdce2cc RK |
2733 | if (!skb) |
2734 | goto err_alloc; | |
f0b3fbea | 2735 | |
1b7bde6d | 2736 | if (fec_enet_new_rxbdp(ndev, bdp, skb)) { |
730ee360 | 2737 | dev_kfree_skb(skb); |
ffdce2cc | 2738 | goto err_alloc; |
d842a31f | 2739 | } |
730ee360 | 2740 | |
4d494cdc | 2741 | rxq->rx_skbuff[i] = skb; |
5cfa3039 | 2742 | bdp->cbd_sc = cpu_to_fec16(BD_ENET_RX_EMPTY); |
ff43da86 FL |
2743 | |
2744 | if (fep->bufdesc_ex) { | |
2745 | struct bufdesc_ex *ebdp = (struct bufdesc_ex *)bdp; | |
5cfa3039 | 2746 | ebdp->cbd_esc = cpu_to_fec32(BD_ENET_RX_INT); |
ff43da86 FL |
2747 | } |
2748 | ||
7355f276 | 2749 | bdp = fec_enet_get_nextdesc(bdp, &rxq->bd); |
f0b3fbea SH |
2750 | } |
2751 | ||
2752 | /* Set the last buffer to wrap. */ | |
7355f276 | 2753 | bdp = fec_enet_get_prevdesc(bdp, &rxq->bd); |
5cfa3039 | 2754 | bdp->cbd_sc |= cpu_to_fec16(BD_SC_WRAP); |
59d0f746 | 2755 | return 0; |
f0b3fbea | 2756 | |
59d0f746 FL |
2757 | err_alloc: |
2758 | fec_enet_free_buffers(ndev); | |
2759 | return -ENOMEM; | |
2760 | } | |
2761 | ||
2762 | static int | |
2763 | fec_enet_alloc_txq_buffers(struct net_device *ndev, unsigned int queue) | |
2764 | { | |
2765 | struct fec_enet_private *fep = netdev_priv(ndev); | |
2766 | unsigned int i; | |
2767 | struct bufdesc *bdp; | |
2768 | struct fec_enet_priv_tx_q *txq; | |
2769 | ||
2770 | txq = fep->tx_queue[queue]; | |
7355f276 TK |
2771 | bdp = txq->bd.base; |
2772 | for (i = 0; i < txq->bd.ring_size; i++) { | |
4d494cdc FD |
2773 | txq->tx_bounce[i] = kmalloc(FEC_ENET_TX_FRSIZE, GFP_KERNEL); |
2774 | if (!txq->tx_bounce[i]) | |
ffdce2cc | 2775 | goto err_alloc; |
f0b3fbea | 2776 | |
5cfa3039 JB |
2777 | bdp->cbd_sc = cpu_to_fec16(0); |
2778 | bdp->cbd_bufaddr = cpu_to_fec32(0); | |
6605b730 | 2779 | |
ff43da86 FL |
2780 | if (fep->bufdesc_ex) { |
2781 | struct bufdesc_ex *ebdp = (struct bufdesc_ex *)bdp; | |
5cfa3039 | 2782 | ebdp->cbd_esc = cpu_to_fec32(BD_ENET_TX_INT); |
ff43da86 FL |
2783 | } |
2784 | ||
7355f276 | 2785 | bdp = fec_enet_get_nextdesc(bdp, &txq->bd); |
f0b3fbea SH |
2786 | } |
2787 | ||
2788 | /* Set the last buffer to wrap. */ | |
7355f276 | 2789 | bdp = fec_enet_get_prevdesc(bdp, &txq->bd); |
5cfa3039 | 2790 | bdp->cbd_sc |= cpu_to_fec16(BD_SC_WRAP); |
f0b3fbea SH |
2791 | |
2792 | return 0; | |
ffdce2cc RK |
2793 | |
2794 | err_alloc: | |
2795 | fec_enet_free_buffers(ndev); | |
2796 | return -ENOMEM; | |
f0b3fbea SH |
2797 | } |
2798 | ||
59d0f746 FL |
2799 | static int fec_enet_alloc_buffers(struct net_device *ndev) |
2800 | { | |
2801 | struct fec_enet_private *fep = netdev_priv(ndev); | |
2802 | unsigned int i; | |
2803 | ||
2804 | for (i = 0; i < fep->num_rx_queues; i++) | |
2805 | if (fec_enet_alloc_rxq_buffers(ndev, i)) | |
2806 | return -ENOMEM; | |
2807 | ||
2808 | for (i = 0; i < fep->num_tx_queues; i++) | |
2809 | if (fec_enet_alloc_txq_buffers(ndev, i)) | |
2810 | return -ENOMEM; | |
2811 | return 0; | |
2812 | } | |
2813 | ||
1da177e4 | 2814 | static int |
c556167f | 2815 | fec_enet_open(struct net_device *ndev) |
1da177e4 | 2816 | { |
c556167f | 2817 | struct fec_enet_private *fep = netdev_priv(ndev); |
f0b3fbea | 2818 | int ret; |
1da177e4 | 2819 | |
8fff755e | 2820 | ret = pm_runtime_get_sync(&fep->pdev->dev); |
b0c6ce24 | 2821 | if (ret < 0) |
8fff755e AL |
2822 | return ret; |
2823 | ||
5bbde4d2 | 2824 | pinctrl_pm_select_default_state(&fep->pdev->dev); |
e8fcfcd5 NA |
2825 | ret = fec_enet_clk_enable(ndev, true); |
2826 | if (ret) | |
8fff755e | 2827 | goto clk_enable; |
e8fcfcd5 | 2828 | |
1da177e4 LT |
2829 | /* I should reset the ring buffers here, but I don't yet know |
2830 | * a simple way to do that. | |
2831 | */ | |
1da177e4 | 2832 | |
c556167f | 2833 | ret = fec_enet_alloc_buffers(ndev); |
f0b3fbea | 2834 | if (ret) |
681d2421 | 2835 | goto err_enet_alloc; |
f0b3fbea | 2836 | |
55dd2753 NA |
2837 | /* Init MAC prior to mii bus probe */ |
2838 | fec_restart(ndev); | |
2839 | ||
418bd0d4 | 2840 | /* Probe and connect to PHY when open the interface */ |
c556167f | 2841 | ret = fec_enet_mii_probe(ndev); |
681d2421 FE |
2842 | if (ret) |
2843 | goto err_enet_mii_probe; | |
ce5eaf02 RK |
2844 | |
2845 | napi_enable(&fep->napi); | |
e6b043d5 | 2846 | phy_start(fep->phy_dev); |
4d494cdc FD |
2847 | netif_tx_start_all_queues(ndev); |
2848 | ||
de40ed31 NA |
2849 | device_set_wakeup_enable(&ndev->dev, fep->wol_flag & |
2850 | FEC_WOL_FLAG_ENABLE); | |
2851 | ||
22f6b860 | 2852 | return 0; |
681d2421 FE |
2853 | |
2854 | err_enet_mii_probe: | |
2855 | fec_enet_free_buffers(ndev); | |
2856 | err_enet_alloc: | |
2857 | fec_enet_clk_enable(ndev, false); | |
8fff755e AL |
2858 | clk_enable: |
2859 | pm_runtime_mark_last_busy(&fep->pdev->dev); | |
2860 | pm_runtime_put_autosuspend(&fep->pdev->dev); | |
681d2421 FE |
2861 | pinctrl_pm_select_sleep_state(&fep->pdev->dev); |
2862 | return ret; | |
1da177e4 LT |
2863 | } |
2864 | ||
2865 | static int | |
c556167f | 2866 | fec_enet_close(struct net_device *ndev) |
1da177e4 | 2867 | { |
c556167f | 2868 | struct fec_enet_private *fep = netdev_priv(ndev); |
1da177e4 | 2869 | |
d76cfae9 RK |
2870 | phy_stop(fep->phy_dev); |
2871 | ||
31a6de34 RK |
2872 | if (netif_device_present(ndev)) { |
2873 | napi_disable(&fep->napi); | |
2874 | netif_tx_disable(ndev); | |
8bbbd3c1 | 2875 | fec_stop(ndev); |
31a6de34 | 2876 | } |
1da177e4 | 2877 | |
635cf17c | 2878 | phy_disconnect(fep->phy_dev); |
0b146ca8 | 2879 | fep->phy_dev = NULL; |
418bd0d4 | 2880 | |
e8fcfcd5 | 2881 | fec_enet_clk_enable(ndev, false); |
5bbde4d2 | 2882 | pinctrl_pm_select_sleep_state(&fep->pdev->dev); |
8fff755e AL |
2883 | pm_runtime_mark_last_busy(&fep->pdev->dev); |
2884 | pm_runtime_put_autosuspend(&fep->pdev->dev); | |
2885 | ||
db8880bc | 2886 | fec_enet_free_buffers(ndev); |
f0b3fbea | 2887 | |
1da177e4 LT |
2888 | return 0; |
2889 | } | |
2890 | ||
1da177e4 LT |
2891 | /* Set or clear the multicast filter for this adaptor. |
2892 | * Skeleton taken from sunlance driver. | |
2893 | * The CPM Ethernet implementation allows Multicast as well as individual | |
2894 | * MAC address filtering. Some of the drivers check to make sure it is | |
2895 | * a group multicast address, and discard those that are not. I guess I | |
2896 | * will do the same for now, but just remove the test if you want | |
2897 | * individual filtering as well (do the upper net layers want or support | |
2898 | * this kind of feature?). | |
2899 | */ | |
2900 | ||
2901 | #define HASH_BITS 6 /* #bits in hash */ | |
2902 | #define CRC32_POLY 0xEDB88320 | |
2903 | ||
c556167f | 2904 | static void set_multicast_list(struct net_device *ndev) |
1da177e4 | 2905 | { |
c556167f | 2906 | struct fec_enet_private *fep = netdev_priv(ndev); |
22bedad3 | 2907 | struct netdev_hw_addr *ha; |
48e2f183 | 2908 | unsigned int i, bit, data, crc, tmp; |
1da177e4 LT |
2909 | unsigned char hash; |
2910 | ||
c556167f | 2911 | if (ndev->flags & IFF_PROMISC) { |
f44d6305 SH |
2912 | tmp = readl(fep->hwp + FEC_R_CNTRL); |
2913 | tmp |= 0x8; | |
2914 | writel(tmp, fep->hwp + FEC_R_CNTRL); | |
4e831836 SH |
2915 | return; |
2916 | } | |
1da177e4 | 2917 | |
4e831836 SH |
2918 | tmp = readl(fep->hwp + FEC_R_CNTRL); |
2919 | tmp &= ~0x8; | |
2920 | writel(tmp, fep->hwp + FEC_R_CNTRL); | |
2921 | ||
c556167f | 2922 | if (ndev->flags & IFF_ALLMULTI) { |
4e831836 SH |
2923 | /* Catch all multicast addresses, so set the |
2924 | * filter to all 1's | |
2925 | */ | |
2926 | writel(0xffffffff, fep->hwp + FEC_GRP_HASH_TABLE_HIGH); | |
2927 | writel(0xffffffff, fep->hwp + FEC_GRP_HASH_TABLE_LOW); | |
2928 | ||
2929 | return; | |
2930 | } | |
2931 | ||
2932 | /* Clear filter and add the addresses in hash register | |
2933 | */ | |
2934 | writel(0, fep->hwp + FEC_GRP_HASH_TABLE_HIGH); | |
2935 | writel(0, fep->hwp + FEC_GRP_HASH_TABLE_LOW); | |
2936 | ||
c556167f | 2937 | netdev_for_each_mc_addr(ha, ndev) { |
4e831836 SH |
2938 | /* calculate crc32 value of mac address */ |
2939 | crc = 0xffffffff; | |
2940 | ||
c556167f | 2941 | for (i = 0; i < ndev->addr_len; i++) { |
22bedad3 | 2942 | data = ha->addr[i]; |
4e831836 SH |
2943 | for (bit = 0; bit < 8; bit++, data >>= 1) { |
2944 | crc = (crc >> 1) ^ | |
2945 | (((crc ^ data) & 1) ? CRC32_POLY : 0); | |
1da177e4 LT |
2946 | } |
2947 | } | |
4e831836 SH |
2948 | |
2949 | /* only upper 6 bits (HASH_BITS) are used | |
2950 | * which point to specific bit in he hash registers | |
2951 | */ | |
2952 | hash = (crc >> (32 - HASH_BITS)) & 0x3f; | |
2953 | ||
2954 | if (hash > 31) { | |
2955 | tmp = readl(fep->hwp + FEC_GRP_HASH_TABLE_HIGH); | |
2956 | tmp |= 1 << (hash - 32); | |
2957 | writel(tmp, fep->hwp + FEC_GRP_HASH_TABLE_HIGH); | |
2958 | } else { | |
2959 | tmp = readl(fep->hwp + FEC_GRP_HASH_TABLE_LOW); | |
2960 | tmp |= 1 << hash; | |
2961 | writel(tmp, fep->hwp + FEC_GRP_HASH_TABLE_LOW); | |
2962 | } | |
1da177e4 LT |
2963 | } |
2964 | } | |
2965 | ||
22f6b860 | 2966 | /* Set a MAC change in hardware. */ |
009fda83 | 2967 | static int |
c556167f | 2968 | fec_set_mac_address(struct net_device *ndev, void *p) |
1da177e4 | 2969 | { |
c556167f | 2970 | struct fec_enet_private *fep = netdev_priv(ndev); |
009fda83 SH |
2971 | struct sockaddr *addr = p; |
2972 | ||
44934fac LS |
2973 | if (addr) { |
2974 | if (!is_valid_ether_addr(addr->sa_data)) | |
2975 | return -EADDRNOTAVAIL; | |
2976 | memcpy(ndev->dev_addr, addr->sa_data, ndev->addr_len); | |
2977 | } | |
1da177e4 | 2978 | |
9638d19e NA |
2979 | /* Add netif status check here to avoid system hang in below case: |
2980 | * ifconfig ethx down; ifconfig ethx hw ether xx:xx:xx:xx:xx:xx; | |
2981 | * After ethx down, fec all clocks are gated off and then register | |
2982 | * access causes system hang. | |
2983 | */ | |
2984 | if (!netif_running(ndev)) | |
2985 | return 0; | |
2986 | ||
c556167f UKK |
2987 | writel(ndev->dev_addr[3] | (ndev->dev_addr[2] << 8) | |
2988 | (ndev->dev_addr[1] << 16) | (ndev->dev_addr[0] << 24), | |
f44d6305 | 2989 | fep->hwp + FEC_ADDR_LOW); |
c556167f | 2990 | writel((ndev->dev_addr[5] << 16) | (ndev->dev_addr[4] << 24), |
7cff0943 | 2991 | fep->hwp + FEC_ADDR_HIGH); |
009fda83 | 2992 | return 0; |
1da177e4 LT |
2993 | } |
2994 | ||
7f5c6add | 2995 | #ifdef CONFIG_NET_POLL_CONTROLLER |
49ce9c2c BH |
2996 | /** |
2997 | * fec_poll_controller - FEC Poll controller function | |
7f5c6add XJ |
2998 | * @dev: The FEC network adapter |
2999 | * | |
3000 | * Polled functionality used by netconsole and others in non interrupt mode | |
3001 | * | |
3002 | */ | |
47a5247f | 3003 | static void fec_poll_controller(struct net_device *dev) |
7f5c6add XJ |
3004 | { |
3005 | int i; | |
3006 | struct fec_enet_private *fep = netdev_priv(dev); | |
3007 | ||
3008 | for (i = 0; i < FEC_IRQ_NUM; i++) { | |
3009 | if (fep->irq[i] > 0) { | |
3010 | disable_irq(fep->irq[i]); | |
3011 | fec_enet_interrupt(fep->irq[i], dev); | |
3012 | enable_irq(fep->irq[i]); | |
3013 | } | |
3014 | } | |
3015 | } | |
3016 | #endif | |
3017 | ||
5bc26726 | 3018 | static inline void fec_enet_set_netdev_features(struct net_device *netdev, |
4c09eed9 JB |
3019 | netdev_features_t features) |
3020 | { | |
3021 | struct fec_enet_private *fep = netdev_priv(netdev); | |
3022 | netdev_features_t changed = features ^ netdev->features; | |
3023 | ||
3024 | netdev->features = features; | |
3025 | ||
3026 | /* Receive checksum has been changed */ | |
3027 | if (changed & NETIF_F_RXCSUM) { | |
3028 | if (features & NETIF_F_RXCSUM) | |
3029 | fep->csum_flags |= FLAG_RX_CSUM_ENABLED; | |
3030 | else | |
3031 | fep->csum_flags &= ~FLAG_RX_CSUM_ENABLED; | |
8506fa1d | 3032 | } |
5bc26726 NA |
3033 | } |
3034 | ||
3035 | static int fec_set_features(struct net_device *netdev, | |
3036 | netdev_features_t features) | |
3037 | { | |
3038 | struct fec_enet_private *fep = netdev_priv(netdev); | |
3039 | netdev_features_t changed = features ^ netdev->features; | |
4c09eed9 | 3040 | |
5b40f709 | 3041 | if (netif_running(netdev) && changed & NETIF_F_RXCSUM) { |
5bc26726 NA |
3042 | napi_disable(&fep->napi); |
3043 | netif_tx_lock_bh(netdev); | |
3044 | fec_stop(netdev); | |
3045 | fec_enet_set_netdev_features(netdev, features); | |
ef83337d | 3046 | fec_restart(netdev); |
4d494cdc | 3047 | netif_tx_wake_all_queues(netdev); |
8506fa1d RK |
3048 | netif_tx_unlock_bh(netdev); |
3049 | napi_enable(&fep->napi); | |
5bc26726 NA |
3050 | } else { |
3051 | fec_enet_set_netdev_features(netdev, features); | |
4c09eed9 JB |
3052 | } |
3053 | ||
3054 | return 0; | |
3055 | } | |
3056 | ||
009fda83 SH |
3057 | static const struct net_device_ops fec_netdev_ops = { |
3058 | .ndo_open = fec_enet_open, | |
3059 | .ndo_stop = fec_enet_close, | |
3060 | .ndo_start_xmit = fec_enet_start_xmit, | |
afc4b13d | 3061 | .ndo_set_rx_mode = set_multicast_list, |
635ecaa7 | 3062 | .ndo_change_mtu = eth_change_mtu, |
009fda83 SH |
3063 | .ndo_validate_addr = eth_validate_addr, |
3064 | .ndo_tx_timeout = fec_timeout, | |
3065 | .ndo_set_mac_address = fec_set_mac_address, | |
db8880bc | 3066 | .ndo_do_ioctl = fec_enet_ioctl, |
7f5c6add XJ |
3067 | #ifdef CONFIG_NET_POLL_CONTROLLER |
3068 | .ndo_poll_controller = fec_poll_controller, | |
3069 | #endif | |
4c09eed9 | 3070 | .ndo_set_features = fec_set_features, |
009fda83 SH |
3071 | }; |
3072 | ||
53bb20d1 TK |
3073 | static const unsigned short offset_des_active_rxq[] = { |
3074 | FEC_R_DES_ACTIVE_0, FEC_R_DES_ACTIVE_1, FEC_R_DES_ACTIVE_2 | |
3075 | }; | |
3076 | ||
3077 | static const unsigned short offset_des_active_txq[] = { | |
3078 | FEC_X_DES_ACTIVE_0, FEC_X_DES_ACTIVE_1, FEC_X_DES_ACTIVE_2 | |
3079 | }; | |
3080 | ||
1da177e4 LT |
3081 | /* |
3082 | * XXX: We need to clean up on failure exits here. | |
ead73183 | 3083 | * |
1da177e4 | 3084 | */ |
c556167f | 3085 | static int fec_enet_init(struct net_device *ndev) |
1da177e4 | 3086 | { |
c556167f | 3087 | struct fec_enet_private *fep = netdev_priv(ndev); |
f0b3fbea | 3088 | struct bufdesc *cbd_base; |
4d494cdc | 3089 | dma_addr_t bd_dma; |
55d0218a | 3090 | int bd_size; |
59d0f746 | 3091 | unsigned int i; |
7355f276 TK |
3092 | unsigned dsize = fep->bufdesc_ex ? sizeof(struct bufdesc_ex) : |
3093 | sizeof(struct bufdesc); | |
3094 | unsigned dsize_log2 = __fls(dsize); | |
55d0218a | 3095 | |
7355f276 | 3096 | WARN_ON(dsize != (1 << dsize_log2)); |
41ef84ce FD |
3097 | #if defined(CONFIG_ARM) |
3098 | fep->rx_align = 0xf; | |
3099 | fep->tx_align = 0xf; | |
3100 | #else | |
3101 | fep->rx_align = 0x3; | |
3102 | fep->tx_align = 0x3; | |
3103 | #endif | |
3104 | ||
59d0f746 | 3105 | fec_enet_alloc_queue(ndev); |
79f33912 | 3106 | |
7355f276 | 3107 | bd_size = (fep->total_tx_ring_size + fep->total_rx_ring_size) * dsize; |
1da177e4 | 3108 | |
8d4dd5cf | 3109 | /* Allocate memory for buffer descriptors. */ |
c0a1a0a6 LS |
3110 | cbd_base = dmam_alloc_coherent(&fep->pdev->dev, bd_size, &bd_dma, |
3111 | GFP_KERNEL); | |
4d494cdc | 3112 | if (!cbd_base) { |
79f33912 NA |
3113 | return -ENOMEM; |
3114 | } | |
3115 | ||
4d494cdc | 3116 | memset(cbd_base, 0, bd_size); |
1da177e4 | 3117 | |
49da97dc | 3118 | /* Get the Ethernet address */ |
c556167f | 3119 | fec_get_mac(ndev); |
44934fac LS |
3120 | /* make sure MAC we just acquired is programmed into the hw */ |
3121 | fec_set_mac_address(ndev, NULL); | |
1da177e4 | 3122 | |
8d4dd5cf | 3123 | /* Set receive and transmit descriptor base. */ |
59d0f746 | 3124 | for (i = 0; i < fep->num_rx_queues; i++) { |
7355f276 TK |
3125 | struct fec_enet_priv_rx_q *rxq = fep->rx_queue[i]; |
3126 | unsigned size = dsize * rxq->bd.ring_size; | |
3127 | ||
3128 | rxq->bd.qid = i; | |
3129 | rxq->bd.base = cbd_base; | |
3130 | rxq->bd.cur = cbd_base; | |
3131 | rxq->bd.dma = bd_dma; | |
3132 | rxq->bd.dsize = dsize; | |
3133 | rxq->bd.dsize_log2 = dsize_log2; | |
53bb20d1 | 3134 | rxq->bd.reg_desc_active = fep->hwp + offset_des_active_rxq[i]; |
7355f276 TK |
3135 | bd_dma += size; |
3136 | cbd_base = (struct bufdesc *)(((void *)cbd_base) + size); | |
3137 | rxq->bd.last = (struct bufdesc *)(((void *)cbd_base) - dsize); | |
59d0f746 FL |
3138 | } |
3139 | ||
3140 | for (i = 0; i < fep->num_tx_queues; i++) { | |
7355f276 TK |
3141 | struct fec_enet_priv_tx_q *txq = fep->tx_queue[i]; |
3142 | unsigned size = dsize * txq->bd.ring_size; | |
3143 | ||
3144 | txq->bd.qid = i; | |
3145 | txq->bd.base = cbd_base; | |
3146 | txq->bd.cur = cbd_base; | |
3147 | txq->bd.dma = bd_dma; | |
3148 | txq->bd.dsize = dsize; | |
3149 | txq->bd.dsize_log2 = dsize_log2; | |
53bb20d1 | 3150 | txq->bd.reg_desc_active = fep->hwp + offset_des_active_txq[i]; |
7355f276 TK |
3151 | bd_dma += size; |
3152 | cbd_base = (struct bufdesc *)(((void *)cbd_base) + size); | |
3153 | txq->bd.last = (struct bufdesc *)(((void *)cbd_base) - dsize); | |
59d0f746 | 3154 | } |
4d494cdc | 3155 | |
1da177e4 | 3156 | |
22f6b860 | 3157 | /* The FEC Ethernet specific entries in the device structure */ |
c556167f UKK |
3158 | ndev->watchdog_timeo = TX_TIMEOUT; |
3159 | ndev->netdev_ops = &fec_netdev_ops; | |
3160 | ndev->ethtool_ops = &fec_enet_ethtool_ops; | |
633e7533 | 3161 | |
dc975382 | 3162 | writel(FEC_RX_DISABLED_IMASK, fep->hwp + FEC_IMASK); |
322555f5 | 3163 | netif_napi_add(ndev, &fep->napi, fec_enet_rx_napi, NAPI_POLL_WEIGHT); |
dc975382 | 3164 | |
6b7e4008 | 3165 | if (fep->quirks & FEC_QUIRK_HAS_VLAN) |
cdffcf1b JB |
3166 | /* enable hw VLAN support */ |
3167 | ndev->features |= NETIF_F_HW_VLAN_CTAG_RX; | |
cdffcf1b | 3168 | |
6b7e4008 | 3169 | if (fep->quirks & FEC_QUIRK_HAS_CSUM) { |
79f33912 NA |
3170 | ndev->gso_max_segs = FEC_MAX_TSO_SEGS; |
3171 | ||
48496255 SG |
3172 | /* enable hw accelerator */ |
3173 | ndev->features |= (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | |
79f33912 | 3174 | | NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_TSO); |
48496255 SG |
3175 | fep->csum_flags |= FLAG_RX_CSUM_ENABLED; |
3176 | } | |
4c09eed9 | 3177 | |
6b7e4008 | 3178 | if (fep->quirks & FEC_QUIRK_HAS_AVB) { |
41ef84ce FD |
3179 | fep->tx_align = 0; |
3180 | fep->rx_align = 0x3f; | |
3181 | } | |
3182 | ||
09d1e541 NA |
3183 | ndev->hw_features = ndev->features; |
3184 | ||
ef83337d | 3185 | fec_restart(ndev); |
1da177e4 | 3186 | |
1da177e4 LT |
3187 | return 0; |
3188 | } | |
3189 | ||
ca2cc333 | 3190 | #ifdef CONFIG_OF |
33897cc8 | 3191 | static void fec_reset_phy(struct platform_device *pdev) |
ca2cc333 SG |
3192 | { |
3193 | int err, phy_reset; | |
962d8cdc | 3194 | bool active_high = false; |
a3caad0a | 3195 | int msec = 1; |
ca2cc333 SG |
3196 | struct device_node *np = pdev->dev.of_node; |
3197 | ||
3198 | if (!np) | |
a9b2c8ef | 3199 | return; |
ca2cc333 | 3200 | |
a3caad0a SG |
3201 | of_property_read_u32(np, "phy-reset-duration", &msec); |
3202 | /* A sane reset duration should not be longer than 1s */ | |
3203 | if (msec > 1000) | |
3204 | msec = 1; | |
3205 | ||
ca2cc333 | 3206 | phy_reset = of_get_named_gpio(np, "phy-reset-gpios", 0); |
07dcf8e9 FE |
3207 | if (!gpio_is_valid(phy_reset)) |
3208 | return; | |
3209 | ||
962d8cdc | 3210 | active_high = of_property_read_bool(np, "phy-reset-active-high"); |
64f10f6e | 3211 | |
119fc007 | 3212 | err = devm_gpio_request_one(&pdev->dev, phy_reset, |
962d8cdc | 3213 | active_high ? GPIOF_OUT_INIT_HIGH : GPIOF_OUT_INIT_LOW, |
64f10f6e | 3214 | "phy-reset"); |
ca2cc333 | 3215 | if (err) { |
07dcf8e9 | 3216 | dev_err(&pdev->dev, "failed to get phy-reset-gpios: %d\n", err); |
a9b2c8ef | 3217 | return; |
ca2cc333 | 3218 | } |
a3caad0a | 3219 | msleep(msec); |
962d8cdc | 3220 | gpio_set_value_cansleep(phy_reset, !active_high); |
ca2cc333 SG |
3221 | } |
3222 | #else /* CONFIG_OF */ | |
0c7768a0 | 3223 | static void fec_reset_phy(struct platform_device *pdev) |
ca2cc333 SG |
3224 | { |
3225 | /* | |
3226 | * In case of platform probe, the reset has been done | |
3227 | * by machine code. | |
3228 | */ | |
ca2cc333 SG |
3229 | } |
3230 | #endif /* CONFIG_OF */ | |
3231 | ||
9fc095f1 FD |
3232 | static void |
3233 | fec_enet_get_queue_num(struct platform_device *pdev, int *num_tx, int *num_rx) | |
3234 | { | |
3235 | struct device_node *np = pdev->dev.of_node; | |
9fc095f1 FD |
3236 | |
3237 | *num_tx = *num_rx = 1; | |
3238 | ||
3239 | if (!np || !of_device_is_available(np)) | |
3240 | return; | |
3241 | ||
3242 | /* parse the num of tx and rx queues */ | |
73b1c90d | 3243 | of_property_read_u32(np, "fsl,num-tx-queues", num_tx); |
b7bd75cf | 3244 | |
73b1c90d | 3245 | of_property_read_u32(np, "fsl,num-rx-queues", num_rx); |
9fc095f1 FD |
3246 | |
3247 | if (*num_tx < 1 || *num_tx > FEC_ENET_MAX_TX_QS) { | |
b7bd75cf FL |
3248 | dev_warn(&pdev->dev, "Invalid num_tx(=%d), fall back to 1\n", |
3249 | *num_tx); | |
9fc095f1 FD |
3250 | *num_tx = 1; |
3251 | return; | |
3252 | } | |
3253 | ||
3254 | if (*num_rx < 1 || *num_rx > FEC_ENET_MAX_RX_QS) { | |
b7bd75cf FL |
3255 | dev_warn(&pdev->dev, "Invalid num_rx(=%d), fall back to 1\n", |
3256 | *num_rx); | |
9fc095f1 FD |
3257 | *num_rx = 1; |
3258 | return; | |
3259 | } | |
3260 | ||
3261 | } | |
3262 | ||
33897cc8 | 3263 | static int |
ead73183 SH |
3264 | fec_probe(struct platform_device *pdev) |
3265 | { | |
3266 | struct fec_enet_private *fep; | |
5eb32bd0 | 3267 | struct fec_platform_data *pdata; |
ead73183 SH |
3268 | struct net_device *ndev; |
3269 | int i, irq, ret = 0; | |
3270 | struct resource *r; | |
ca2cc333 | 3271 | const struct of_device_id *of_id; |
43af940c | 3272 | static int dev_id; |
407066f8 | 3273 | struct device_node *np = pdev->dev.of_node, *phy_node; |
b7bd75cf FL |
3274 | int num_tx_qs; |
3275 | int num_rx_qs; | |
ca2cc333 | 3276 | |
9fc095f1 FD |
3277 | fec_enet_get_queue_num(pdev, &num_tx_qs, &num_rx_qs); |
3278 | ||
ead73183 | 3279 | /* Init network device */ |
9fc095f1 FD |
3280 | ndev = alloc_etherdev_mqs(sizeof(struct fec_enet_private), |
3281 | num_tx_qs, num_rx_qs); | |
83e519b6 FE |
3282 | if (!ndev) |
3283 | return -ENOMEM; | |
ead73183 SH |
3284 | |
3285 | SET_NETDEV_DEV(ndev, &pdev->dev); | |
3286 | ||
3287 | /* setup board info structure */ | |
3288 | fep = netdev_priv(ndev); | |
ead73183 | 3289 | |
6b7e4008 LW |
3290 | of_id = of_match_device(fec_dt_ids, &pdev->dev); |
3291 | if (of_id) | |
3292 | pdev->id_entry = of_id->data; | |
3293 | fep->quirks = pdev->id_entry->driver_data; | |
3294 | ||
0c818594 | 3295 | fep->netdev = ndev; |
9fc095f1 FD |
3296 | fep->num_rx_queues = num_rx_qs; |
3297 | fep->num_tx_queues = num_tx_qs; | |
3298 | ||
d1391930 | 3299 | #if !defined(CONFIG_M5272) |
baa70a5c | 3300 | /* default enable pause frame auto negotiation */ |
6b7e4008 | 3301 | if (fep->quirks & FEC_QUIRK_HAS_GBIT) |
baa70a5c | 3302 | fep->pause_flag |= FEC_PAUSE_FLAG_AUTONEG; |
d1391930 | 3303 | #endif |
baa70a5c | 3304 | |
5bbde4d2 NA |
3305 | /* Select default pin state */ |
3306 | pinctrl_pm_select_default_state(&pdev->dev); | |
3307 | ||
399db75b | 3308 | r = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
941e173a TB |
3309 | fep->hwp = devm_ioremap_resource(&pdev->dev, r); |
3310 | if (IS_ERR(fep->hwp)) { | |
3311 | ret = PTR_ERR(fep->hwp); | |
3312 | goto failed_ioremap; | |
3313 | } | |
3314 | ||
e6b043d5 | 3315 | fep->pdev = pdev; |
43af940c | 3316 | fep->dev_id = dev_id++; |
ead73183 | 3317 | |
ead73183 SH |
3318 | platform_set_drvdata(pdev, ndev); |
3319 | ||
de40ed31 NA |
3320 | if (of_get_property(np, "fsl,magic-packet", NULL)) |
3321 | fep->wol_flag |= FEC_WOL_HAS_MAGIC_PACKET; | |
3322 | ||
407066f8 UKK |
3323 | phy_node = of_parse_phandle(np, "phy-handle", 0); |
3324 | if (!phy_node && of_phy_is_fixed_link(np)) { | |
3325 | ret = of_phy_register_fixed_link(np); | |
3326 | if (ret < 0) { | |
3327 | dev_err(&pdev->dev, | |
3328 | "broken fixed-link specification\n"); | |
3329 | goto failed_phy; | |
3330 | } | |
3331 | phy_node = of_node_get(np); | |
3332 | } | |
3333 | fep->phy_node = phy_node; | |
3334 | ||
6c5f7808 | 3335 | ret = of_get_phy_mode(pdev->dev.of_node); |
ca2cc333 | 3336 | if (ret < 0) { |
94660ba0 | 3337 | pdata = dev_get_platdata(&pdev->dev); |
ca2cc333 SG |
3338 | if (pdata) |
3339 | fep->phy_interface = pdata->phy; | |
3340 | else | |
3341 | fep->phy_interface = PHY_INTERFACE_MODE_MII; | |
3342 | } else { | |
3343 | fep->phy_interface = ret; | |
3344 | } | |
3345 | ||
f4d40de3 SH |
3346 | fep->clk_ipg = devm_clk_get(&pdev->dev, "ipg"); |
3347 | if (IS_ERR(fep->clk_ipg)) { | |
3348 | ret = PTR_ERR(fep->clk_ipg); | |
ead73183 SH |
3349 | goto failed_clk; |
3350 | } | |
f4d40de3 SH |
3351 | |
3352 | fep->clk_ahb = devm_clk_get(&pdev->dev, "ahb"); | |
3353 | if (IS_ERR(fep->clk_ahb)) { | |
3354 | ret = PTR_ERR(fep->clk_ahb); | |
3355 | goto failed_clk; | |
3356 | } | |
3357 | ||
d851b47b FD |
3358 | fep->itr_clk_rate = clk_get_rate(fep->clk_ahb); |
3359 | ||
daa7d392 WS |
3360 | /* enet_out is optional, depends on board */ |
3361 | fep->clk_enet_out = devm_clk_get(&pdev->dev, "enet_out"); | |
3362 | if (IS_ERR(fep->clk_enet_out)) | |
3363 | fep->clk_enet_out = NULL; | |
3364 | ||
91c0d987 NA |
3365 | fep->ptp_clk_on = false; |
3366 | mutex_init(&fep->ptp_clk_mutex); | |
9b5330ed FD |
3367 | |
3368 | /* clk_ref is optional, depends on board */ | |
3369 | fep->clk_ref = devm_clk_get(&pdev->dev, "enet_clk_ref"); | |
3370 | if (IS_ERR(fep->clk_ref)) | |
3371 | fep->clk_ref = NULL; | |
3372 | ||
6b7e4008 | 3373 | fep->bufdesc_ex = fep->quirks & FEC_QUIRK_HAS_BUFDESC_EX; |
6605b730 FL |
3374 | fep->clk_ptp = devm_clk_get(&pdev->dev, "ptp"); |
3375 | if (IS_ERR(fep->clk_ptp)) { | |
c29dc2d7 | 3376 | fep->clk_ptp = NULL; |
217b5844 | 3377 | fep->bufdesc_ex = false; |
6605b730 | 3378 | } |
6605b730 | 3379 | |
e8fcfcd5 | 3380 | ret = fec_enet_clk_enable(ndev, true); |
13a097bd FE |
3381 | if (ret) |
3382 | goto failed_clk; | |
3383 | ||
8fff755e AL |
3384 | ret = clk_prepare_enable(fep->clk_ipg); |
3385 | if (ret) | |
3386 | goto failed_clk_ipg; | |
3387 | ||
f4e9f3d2 FE |
3388 | fep->reg_phy = devm_regulator_get(&pdev->dev, "phy"); |
3389 | if (!IS_ERR(fep->reg_phy)) { | |
3390 | ret = regulator_enable(fep->reg_phy); | |
5fa9c0fe SG |
3391 | if (ret) { |
3392 | dev_err(&pdev->dev, | |
3393 | "Failed to enable phy regulator: %d\n", ret); | |
3394 | goto failed_regulator; | |
3395 | } | |
f6a4d607 FE |
3396 | } else { |
3397 | fep->reg_phy = NULL; | |
5fa9c0fe SG |
3398 | } |
3399 | ||
8fff755e AL |
3400 | pm_runtime_set_autosuspend_delay(&pdev->dev, FEC_MDIO_PM_TIMEOUT); |
3401 | pm_runtime_use_autosuspend(&pdev->dev); | |
14d2b7c1 | 3402 | pm_runtime_get_noresume(&pdev->dev); |
8fff755e AL |
3403 | pm_runtime_set_active(&pdev->dev); |
3404 | pm_runtime_enable(&pdev->dev); | |
3405 | ||
2ca9b2aa SG |
3406 | fec_reset_phy(pdev); |
3407 | ||
e2f8d555 | 3408 | if (fep->bufdesc_ex) |
ca162a82 | 3409 | fec_ptp_init(pdev); |
e2f8d555 FE |
3410 | |
3411 | ret = fec_enet_init(ndev); | |
3412 | if (ret) | |
3413 | goto failed_init; | |
3414 | ||
3415 | for (i = 0; i < FEC_IRQ_NUM; i++) { | |
3416 | irq = platform_get_irq(pdev, i); | |
3417 | if (irq < 0) { | |
3418 | if (i) | |
3419 | break; | |
3420 | ret = irq; | |
3421 | goto failed_irq; | |
3422 | } | |
0d9b2ab1 | 3423 | ret = devm_request_irq(&pdev->dev, irq, fec_enet_interrupt, |
44a272dd | 3424 | 0, pdev->name, ndev); |
0d9b2ab1 | 3425 | if (ret) |
e2f8d555 | 3426 | goto failed_irq; |
de40ed31 NA |
3427 | |
3428 | fep->irq[i] = irq; | |
e2f8d555 FE |
3429 | } |
3430 | ||
b4d39b53 | 3431 | init_completion(&fep->mdio_done); |
e6b043d5 BW |
3432 | ret = fec_enet_mii_init(pdev); |
3433 | if (ret) | |
3434 | goto failed_mii_init; | |
3435 | ||
03c698c9 OS |
3436 | /* Carrier starts down, phylib will bring it up */ |
3437 | netif_carrier_off(ndev); | |
e8fcfcd5 | 3438 | fec_enet_clk_enable(ndev, false); |
5bbde4d2 | 3439 | pinctrl_pm_select_sleep_state(&pdev->dev); |
03c698c9 | 3440 | |
ead73183 SH |
3441 | ret = register_netdev(ndev); |
3442 | if (ret) | |
3443 | goto failed_register; | |
3444 | ||
de40ed31 NA |
3445 | device_init_wakeup(&ndev->dev, fep->wol_flag & |
3446 | FEC_WOL_HAS_MAGIC_PACKET); | |
3447 | ||
eb1d0640 FE |
3448 | if (fep->bufdesc_ex && fep->ptp_clock) |
3449 | netdev_info(ndev, "registered PHC device %d\n", fep->dev_id); | |
3450 | ||
1b7bde6d | 3451 | fep->rx_copybreak = COPYBREAK_DEFAULT; |
36cdc743 | 3452 | INIT_WORK(&fep->tx_timeout_work, fec_enet_timeout_work); |
8fff755e AL |
3453 | |
3454 | pm_runtime_mark_last_busy(&pdev->dev); | |
3455 | pm_runtime_put_autosuspend(&pdev->dev); | |
3456 | ||
ead73183 SH |
3457 | return 0; |
3458 | ||
3459 | failed_register: | |
e6b043d5 BW |
3460 | fec_enet_mii_remove(fep); |
3461 | failed_mii_init: | |
7a2bbd8d | 3462 | failed_irq: |
7a2bbd8d | 3463 | failed_init: |
32cba57b | 3464 | fec_ptp_stop(pdev); |
f6a4d607 FE |
3465 | if (fep->reg_phy) |
3466 | regulator_disable(fep->reg_phy); | |
5fa9c0fe | 3467 | failed_regulator: |
8fff755e AL |
3468 | clk_disable_unprepare(fep->clk_ipg); |
3469 | failed_clk_ipg: | |
e8fcfcd5 | 3470 | fec_enet_clk_enable(ndev, false); |
ead73183 | 3471 | failed_clk: |
407066f8 UKK |
3472 | failed_phy: |
3473 | of_node_put(phy_node); | |
ead73183 SH |
3474 | failed_ioremap: |
3475 | free_netdev(ndev); | |
3476 | ||
3477 | return ret; | |
3478 | } | |
3479 | ||
33897cc8 | 3480 | static int |
ead73183 SH |
3481 | fec_drv_remove(struct platform_device *pdev) |
3482 | { | |
3483 | struct net_device *ndev = platform_get_drvdata(pdev); | |
3484 | struct fec_enet_private *fep = netdev_priv(ndev); | |
3485 | ||
36cdc743 | 3486 | cancel_work_sync(&fep->tx_timeout_work); |
32cba57b | 3487 | fec_ptp_stop(pdev); |
e163cc97 | 3488 | unregister_netdev(ndev); |
e6b043d5 | 3489 | fec_enet_mii_remove(fep); |
f6a4d607 FE |
3490 | if (fep->reg_phy) |
3491 | regulator_disable(fep->reg_phy); | |
407066f8 | 3492 | of_node_put(fep->phy_node); |
ead73183 | 3493 | free_netdev(ndev); |
28e2188e | 3494 | |
ead73183 SH |
3495 | return 0; |
3496 | } | |
3497 | ||
dd66d386 | 3498 | static int __maybe_unused fec_suspend(struct device *dev) |
ead73183 | 3499 | { |
87cad5c3 | 3500 | struct net_device *ndev = dev_get_drvdata(dev); |
04e5216d | 3501 | struct fec_enet_private *fep = netdev_priv(ndev); |
ead73183 | 3502 | |
da1774e5 | 3503 | rtnl_lock(); |
04e5216d | 3504 | if (netif_running(ndev)) { |
de40ed31 NA |
3505 | if (fep->wol_flag & FEC_WOL_FLAG_ENABLE) |
3506 | fep->wol_flag |= FEC_WOL_FLAG_SLEEP_ON; | |
d76cfae9 | 3507 | phy_stop(fep->phy_dev); |
31a6de34 RK |
3508 | napi_disable(&fep->napi); |
3509 | netif_tx_lock_bh(ndev); | |
04e5216d | 3510 | netif_device_detach(ndev); |
31a6de34 RK |
3511 | netif_tx_unlock_bh(ndev); |
3512 | fec_stop(ndev); | |
f4c4a4e0 | 3513 | fec_enet_clk_enable(ndev, false); |
de40ed31 NA |
3514 | if (!(fep->wol_flag & FEC_WOL_FLAG_ENABLE)) |
3515 | pinctrl_pm_select_sleep_state(&fep->pdev->dev); | |
ead73183 | 3516 | } |
da1774e5 RK |
3517 | rtnl_unlock(); |
3518 | ||
de40ed31 | 3519 | if (fep->reg_phy && !(fep->wol_flag & FEC_WOL_FLAG_ENABLE)) |
238f7bc7 FE |
3520 | regulator_disable(fep->reg_phy); |
3521 | ||
858eeb7d NA |
3522 | /* SOC supply clock to phy, when clock is disabled, phy link down |
3523 | * SOC control phy regulator, when regulator is disabled, phy link down | |
3524 | */ | |
3525 | if (fep->clk_enet_out || fep->reg_phy) | |
3526 | fep->link = 0; | |
3527 | ||
ead73183 SH |
3528 | return 0; |
3529 | } | |
3530 | ||
dd66d386 | 3531 | static int __maybe_unused fec_resume(struct device *dev) |
ead73183 | 3532 | { |
87cad5c3 | 3533 | struct net_device *ndev = dev_get_drvdata(dev); |
04e5216d | 3534 | struct fec_enet_private *fep = netdev_priv(ndev); |
de40ed31 | 3535 | struct fec_platform_data *pdata = fep->pdev->dev.platform_data; |
238f7bc7 | 3536 | int ret; |
de40ed31 | 3537 | int val; |
238f7bc7 | 3538 | |
de40ed31 | 3539 | if (fep->reg_phy && !(fep->wol_flag & FEC_WOL_FLAG_ENABLE)) { |
238f7bc7 FE |
3540 | ret = regulator_enable(fep->reg_phy); |
3541 | if (ret) | |
3542 | return ret; | |
3543 | } | |
ead73183 | 3544 | |
da1774e5 | 3545 | rtnl_lock(); |
04e5216d | 3546 | if (netif_running(ndev)) { |
f4c4a4e0 NA |
3547 | ret = fec_enet_clk_enable(ndev, true); |
3548 | if (ret) { | |
3549 | rtnl_unlock(); | |
3550 | goto failed_clk; | |
3551 | } | |
de40ed31 NA |
3552 | if (fep->wol_flag & FEC_WOL_FLAG_ENABLE) { |
3553 | if (pdata && pdata->sleep_mode_enable) | |
3554 | pdata->sleep_mode_enable(false); | |
3555 | val = readl(fep->hwp + FEC_ECNTRL); | |
3556 | val &= ~(FEC_ECR_MAGICEN | FEC_ECR_SLEEP); | |
3557 | writel(val, fep->hwp + FEC_ECNTRL); | |
3558 | fep->wol_flag &= ~FEC_WOL_FLAG_SLEEP_ON; | |
3559 | } else { | |
3560 | pinctrl_pm_select_default_state(&fep->pdev->dev); | |
3561 | } | |
ef83337d | 3562 | fec_restart(ndev); |
31a6de34 | 3563 | netif_tx_lock_bh(ndev); |
6af42d42 | 3564 | netif_device_attach(ndev); |
dbc64a8e | 3565 | netif_tx_unlock_bh(ndev); |
6af42d42 | 3566 | napi_enable(&fep->napi); |
d76cfae9 | 3567 | phy_start(fep->phy_dev); |
ead73183 | 3568 | } |
da1774e5 | 3569 | rtnl_unlock(); |
04e5216d | 3570 | |
ead73183 | 3571 | return 0; |
13a097bd | 3572 | |
e8fcfcd5 | 3573 | failed_clk: |
13a097bd FE |
3574 | if (fep->reg_phy) |
3575 | regulator_disable(fep->reg_phy); | |
3576 | return ret; | |
ead73183 SH |
3577 | } |
3578 | ||
8fff755e AL |
3579 | static int __maybe_unused fec_runtime_suspend(struct device *dev) |
3580 | { | |
3581 | struct net_device *ndev = dev_get_drvdata(dev); | |
3582 | struct fec_enet_private *fep = netdev_priv(ndev); | |
3583 | ||
3584 | clk_disable_unprepare(fep->clk_ipg); | |
3585 | ||
3586 | return 0; | |
3587 | } | |
3588 | ||
3589 | static int __maybe_unused fec_runtime_resume(struct device *dev) | |
3590 | { | |
3591 | struct net_device *ndev = dev_get_drvdata(dev); | |
3592 | struct fec_enet_private *fep = netdev_priv(ndev); | |
3593 | ||
3594 | return clk_prepare_enable(fep->clk_ipg); | |
3595 | } | |
3596 | ||
3597 | static const struct dev_pm_ops fec_pm_ops = { | |
3598 | SET_SYSTEM_SLEEP_PM_OPS(fec_suspend, fec_resume) | |
3599 | SET_RUNTIME_PM_OPS(fec_runtime_suspend, fec_runtime_resume, NULL) | |
3600 | }; | |
59d4289b | 3601 | |
ead73183 SH |
3602 | static struct platform_driver fec_driver = { |
3603 | .driver = { | |
b5680e0b | 3604 | .name = DRIVER_NAME, |
87cad5c3 | 3605 | .pm = &fec_pm_ops, |
ca2cc333 | 3606 | .of_match_table = fec_dt_ids, |
ead73183 | 3607 | }, |
b5680e0b | 3608 | .id_table = fec_devtype, |
87cad5c3 | 3609 | .probe = fec_probe, |
33897cc8 | 3610 | .remove = fec_drv_remove, |
ead73183 SH |
3611 | }; |
3612 | ||
aaca2377 | 3613 | module_platform_driver(fec_driver); |
1da177e4 | 3614 | |
f8c0aca9 | 3615 | MODULE_ALIAS("platform:"DRIVER_NAME); |
1da177e4 | 3616 | MODULE_LICENSE("GPL"); |