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Commit | Line | Data |
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0bbaf069 | 1 | /* |
1da177e4 LT |
2 | * drivers/net/gianfar.c |
3 | * | |
4 | * Gianfar Ethernet Driver | |
7f7f5316 AF |
5 | * This driver is designed for the non-CPM ethernet controllers |
6 | * on the 85xx and 83xx family of integrated processors | |
1da177e4 LT |
7 | * Based on 8260_io/fcc_enet.c |
8 | * | |
9 | * Author: Andy Fleming | |
4c8d3d99 | 10 | * Maintainer: Kumar Gala |
a12f801d | 11 | * Modifier: Sandeep Gopalpet <sandeep.kumar@freescale.com> |
1da177e4 | 12 | * |
a12f801d SG |
13 | * Copyright 2002-2009 Freescale Semiconductor, Inc. |
14 | * Copyright 2007 MontaVista Software, Inc. | |
1da177e4 LT |
15 | * |
16 | * This program is free software; you can redistribute it and/or modify it | |
17 | * under the terms of the GNU General Public License as published by the | |
18 | * Free Software Foundation; either version 2 of the License, or (at your | |
19 | * option) any later version. | |
20 | * | |
21 | * Gianfar: AKA Lambda Draconis, "Dragon" | |
22 | * RA 11 31 24.2 | |
23 | * Dec +69 19 52 | |
24 | * V 3.84 | |
25 | * B-V +1.62 | |
26 | * | |
27 | * Theory of operation | |
0bbaf069 | 28 | * |
b31a1d8b AF |
29 | * The driver is initialized through of_device. Configuration information |
30 | * is therefore conveyed through an OF-style device tree. | |
1da177e4 LT |
31 | * |
32 | * The Gianfar Ethernet Controller uses a ring of buffer | |
33 | * descriptors. The beginning is indicated by a register | |
0bbaf069 KG |
34 | * pointing to the physical address of the start of the ring. |
35 | * The end is determined by a "wrap" bit being set in the | |
1da177e4 LT |
36 | * last descriptor of the ring. |
37 | * | |
38 | * When a packet is received, the RXF bit in the | |
0bbaf069 | 39 | * IEVENT register is set, triggering an interrupt when the |
1da177e4 LT |
40 | * corresponding bit in the IMASK register is also set (if |
41 | * interrupt coalescing is active, then the interrupt may not | |
42 | * happen immediately, but will wait until either a set number | |
bb40dcbb | 43 | * of frames or amount of time have passed). In NAPI, the |
1da177e4 | 44 | * interrupt handler will signal there is work to be done, and |
0aa1538f | 45 | * exit. This method will start at the last known empty |
0bbaf069 | 46 | * descriptor, and process every subsequent descriptor until there |
1da177e4 LT |
47 | * are none left with data (NAPI will stop after a set number of |
48 | * packets to give time to other tasks, but will eventually | |
49 | * process all the packets). The data arrives inside a | |
50 | * pre-allocated skb, and so after the skb is passed up to the | |
51 | * stack, a new skb must be allocated, and the address field in | |
52 | * the buffer descriptor must be updated to indicate this new | |
53 | * skb. | |
54 | * | |
55 | * When the kernel requests that a packet be transmitted, the | |
56 | * driver starts where it left off last time, and points the | |
57 | * descriptor at the buffer which was passed in. The driver | |
58 | * then informs the DMA engine that there are packets ready to | |
59 | * be transmitted. Once the controller is finished transmitting | |
60 | * the packet, an interrupt may be triggered (under the same | |
61 | * conditions as for reception, but depending on the TXF bit). | |
62 | * The driver then cleans up the buffer. | |
63 | */ | |
64 | ||
1da177e4 | 65 | #include <linux/kernel.h> |
1da177e4 LT |
66 | #include <linux/string.h> |
67 | #include <linux/errno.h> | |
bb40dcbb | 68 | #include <linux/unistd.h> |
1da177e4 LT |
69 | #include <linux/slab.h> |
70 | #include <linux/interrupt.h> | |
71 | #include <linux/init.h> | |
72 | #include <linux/delay.h> | |
73 | #include <linux/netdevice.h> | |
74 | #include <linux/etherdevice.h> | |
75 | #include <linux/skbuff.h> | |
0bbaf069 | 76 | #include <linux/if_vlan.h> |
1da177e4 LT |
77 | #include <linux/spinlock.h> |
78 | #include <linux/mm.h> | |
fe192a49 | 79 | #include <linux/of_mdio.h> |
b31a1d8b | 80 | #include <linux/of_platform.h> |
0bbaf069 KG |
81 | #include <linux/ip.h> |
82 | #include <linux/tcp.h> | |
83 | #include <linux/udp.h> | |
9c07b884 | 84 | #include <linux/in.h> |
1da177e4 LT |
85 | |
86 | #include <asm/io.h> | |
87 | #include <asm/irq.h> | |
88 | #include <asm/uaccess.h> | |
89 | #include <linux/module.h> | |
1da177e4 LT |
90 | #include <linux/dma-mapping.h> |
91 | #include <linux/crc32.h> | |
bb40dcbb AF |
92 | #include <linux/mii.h> |
93 | #include <linux/phy.h> | |
b31a1d8b AF |
94 | #include <linux/phy_fixed.h> |
95 | #include <linux/of.h> | |
1da177e4 LT |
96 | |
97 | #include "gianfar.h" | |
1577ecef | 98 | #include "fsl_pq_mdio.h" |
1da177e4 LT |
99 | |
100 | #define TX_TIMEOUT (1*HZ) | |
1da177e4 LT |
101 | #undef BRIEF_GFAR_ERRORS |
102 | #undef VERBOSE_GFAR_ERRORS | |
103 | ||
1da177e4 | 104 | const char gfar_driver_name[] = "Gianfar Ethernet"; |
7f7f5316 | 105 | const char gfar_driver_version[] = "1.3"; |
1da177e4 | 106 | |
1da177e4 LT |
107 | static int gfar_enet_open(struct net_device *dev); |
108 | static int gfar_start_xmit(struct sk_buff *skb, struct net_device *dev); | |
ab939905 | 109 | static void gfar_reset_task(struct work_struct *work); |
1da177e4 LT |
110 | static void gfar_timeout(struct net_device *dev); |
111 | static int gfar_close(struct net_device *dev); | |
815b97c6 | 112 | struct sk_buff *gfar_new_skb(struct net_device *dev); |
a12f801d | 113 | static void gfar_new_rxbdp(struct gfar_priv_rx_q *rx_queue, struct rxbd8 *bdp, |
815b97c6 | 114 | struct sk_buff *skb); |
1da177e4 LT |
115 | static int gfar_set_mac_address(struct net_device *dev); |
116 | static int gfar_change_mtu(struct net_device *dev, int new_mtu); | |
7d12e780 DH |
117 | static irqreturn_t gfar_error(int irq, void *dev_id); |
118 | static irqreturn_t gfar_transmit(int irq, void *dev_id); | |
119 | static irqreturn_t gfar_interrupt(int irq, void *dev_id); | |
1da177e4 LT |
120 | static void adjust_link(struct net_device *dev); |
121 | static void init_registers(struct net_device *dev); | |
122 | static int init_phy(struct net_device *dev); | |
b31a1d8b AF |
123 | static int gfar_probe(struct of_device *ofdev, |
124 | const struct of_device_id *match); | |
125 | static int gfar_remove(struct of_device *ofdev); | |
bb40dcbb | 126 | static void free_skb_resources(struct gfar_private *priv); |
1da177e4 LT |
127 | static void gfar_set_multi(struct net_device *dev); |
128 | static void gfar_set_hash_for_addr(struct net_device *dev, u8 *addr); | |
d3c12873 | 129 | static void gfar_configure_serdes(struct net_device *dev); |
bea3348e | 130 | static int gfar_poll(struct napi_struct *napi, int budget); |
f2d71c2d VW |
131 | #ifdef CONFIG_NET_POLL_CONTROLLER |
132 | static void gfar_netpoll(struct net_device *dev); | |
133 | #endif | |
a12f801d SG |
134 | int gfar_clean_rx_ring(struct gfar_priv_rx_q *rx_queue, int rx_work_limit); |
135 | static int gfar_clean_tx_ring(struct gfar_priv_tx_q *tx_queue); | |
2c2db48a DH |
136 | static int gfar_process_frame(struct net_device *dev, struct sk_buff *skb, |
137 | int amount_pull); | |
0bbaf069 KG |
138 | static void gfar_vlan_rx_register(struct net_device *netdev, |
139 | struct vlan_group *grp); | |
7f7f5316 | 140 | void gfar_halt(struct net_device *dev); |
d87eb127 | 141 | static void gfar_halt_nodisable(struct net_device *dev); |
7f7f5316 AF |
142 | void gfar_start(struct net_device *dev); |
143 | static void gfar_clear_exact_match(struct net_device *dev); | |
144 | static void gfar_set_mac_for_addr(struct net_device *dev, int num, u8 *addr); | |
26ccfc37 | 145 | static int gfar_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); |
1da177e4 | 146 | |
1da177e4 LT |
147 | MODULE_AUTHOR("Freescale Semiconductor, Inc"); |
148 | MODULE_DESCRIPTION("Gianfar Ethernet Driver"); | |
149 | MODULE_LICENSE("GPL"); | |
150 | ||
a12f801d | 151 | static void gfar_init_rxbdp(struct gfar_priv_rx_q *rx_queue, struct rxbd8 *bdp, |
8a102fe0 AV |
152 | dma_addr_t buf) |
153 | { | |
8a102fe0 AV |
154 | u32 lstatus; |
155 | ||
156 | bdp->bufPtr = buf; | |
157 | ||
158 | lstatus = BD_LFLAG(RXBD_EMPTY | RXBD_INTERRUPT); | |
a12f801d | 159 | if (bdp == rx_queue->rx_bd_base + rx_queue->rx_ring_size - 1) |
8a102fe0 AV |
160 | lstatus |= BD_LFLAG(RXBD_WRAP); |
161 | ||
162 | eieio(); | |
163 | ||
164 | bdp->lstatus = lstatus; | |
165 | } | |
166 | ||
8728327e | 167 | static int gfar_init_bds(struct net_device *ndev) |
826aa4a0 | 168 | { |
8728327e | 169 | struct gfar_private *priv = netdev_priv(ndev); |
a12f801d SG |
170 | struct gfar_priv_tx_q *tx_queue = NULL; |
171 | struct gfar_priv_rx_q *rx_queue = NULL; | |
826aa4a0 AV |
172 | struct txbd8 *txbdp; |
173 | struct rxbd8 *rxbdp; | |
fba4ed03 | 174 | int i, j; |
a12f801d | 175 | |
fba4ed03 SG |
176 | for (i = 0; i < priv->num_tx_queues; i++) { |
177 | tx_queue = priv->tx_queue[i]; | |
178 | /* Initialize some variables in our dev structure */ | |
179 | tx_queue->num_txbdfree = tx_queue->tx_ring_size; | |
180 | tx_queue->dirty_tx = tx_queue->tx_bd_base; | |
181 | tx_queue->cur_tx = tx_queue->tx_bd_base; | |
182 | tx_queue->skb_curtx = 0; | |
183 | tx_queue->skb_dirtytx = 0; | |
184 | ||
185 | /* Initialize Transmit Descriptor Ring */ | |
186 | txbdp = tx_queue->tx_bd_base; | |
187 | for (j = 0; j < tx_queue->tx_ring_size; j++) { | |
188 | txbdp->lstatus = 0; | |
189 | txbdp->bufPtr = 0; | |
190 | txbdp++; | |
191 | } | |
8728327e | 192 | |
fba4ed03 SG |
193 | /* Set the last descriptor in the ring to indicate wrap */ |
194 | txbdp--; | |
195 | txbdp->status |= TXBD_WRAP; | |
8728327e AV |
196 | } |
197 | ||
fba4ed03 SG |
198 | for (i = 0; i < priv->num_rx_queues; i++) { |
199 | rx_queue = priv->rx_queue[i]; | |
200 | rx_queue->cur_rx = rx_queue->rx_bd_base; | |
201 | rx_queue->skb_currx = 0; | |
202 | rxbdp = rx_queue->rx_bd_base; | |
8728327e | 203 | |
fba4ed03 SG |
204 | for (j = 0; j < rx_queue->rx_ring_size; j++) { |
205 | struct sk_buff *skb = rx_queue->rx_skbuff[j]; | |
8728327e | 206 | |
fba4ed03 SG |
207 | if (skb) { |
208 | gfar_init_rxbdp(rx_queue, rxbdp, | |
209 | rxbdp->bufPtr); | |
210 | } else { | |
211 | skb = gfar_new_skb(ndev); | |
212 | if (!skb) { | |
213 | pr_err("%s: Can't allocate RX buffers\n", | |
214 | ndev->name); | |
215 | goto err_rxalloc_fail; | |
216 | } | |
217 | rx_queue->rx_skbuff[j] = skb; | |
218 | ||
219 | gfar_new_rxbdp(rx_queue, rxbdp, skb); | |
8728327e | 220 | } |
8728327e | 221 | |
fba4ed03 | 222 | rxbdp++; |
8728327e AV |
223 | } |
224 | ||
8728327e AV |
225 | } |
226 | ||
227 | return 0; | |
fba4ed03 SG |
228 | |
229 | err_rxalloc_fail: | |
230 | free_skb_resources(priv); | |
231 | return -ENOMEM; | |
8728327e AV |
232 | } |
233 | ||
234 | static int gfar_alloc_skb_resources(struct net_device *ndev) | |
235 | { | |
826aa4a0 | 236 | void *vaddr; |
fba4ed03 SG |
237 | dma_addr_t addr; |
238 | int i, j, k; | |
826aa4a0 AV |
239 | struct gfar_private *priv = netdev_priv(ndev); |
240 | struct device *dev = &priv->ofdev->dev; | |
a12f801d SG |
241 | struct gfar_priv_tx_q *tx_queue = NULL; |
242 | struct gfar_priv_rx_q *rx_queue = NULL; | |
243 | ||
fba4ed03 SG |
244 | priv->total_tx_ring_size = 0; |
245 | for (i = 0; i < priv->num_tx_queues; i++) | |
246 | priv->total_tx_ring_size += priv->tx_queue[i]->tx_ring_size; | |
247 | ||
248 | priv->total_rx_ring_size = 0; | |
249 | for (i = 0; i < priv->num_rx_queues; i++) | |
250 | priv->total_rx_ring_size += priv->rx_queue[i]->rx_ring_size; | |
826aa4a0 AV |
251 | |
252 | /* Allocate memory for the buffer descriptors */ | |
8728327e | 253 | vaddr = dma_alloc_coherent(dev, |
fba4ed03 SG |
254 | sizeof(struct txbd8) * priv->total_tx_ring_size + |
255 | sizeof(struct rxbd8) * priv->total_rx_ring_size, | |
256 | &addr, GFP_KERNEL); | |
826aa4a0 AV |
257 | if (!vaddr) { |
258 | if (netif_msg_ifup(priv)) | |
259 | pr_err("%s: Could not allocate buffer descriptors!\n", | |
260 | ndev->name); | |
261 | return -ENOMEM; | |
262 | } | |
263 | ||
fba4ed03 SG |
264 | for (i = 0; i < priv->num_tx_queues; i++) { |
265 | tx_queue = priv->tx_queue[i]; | |
266 | tx_queue->tx_bd_base = (struct txbd8 *) vaddr; | |
267 | tx_queue->tx_bd_dma_base = addr; | |
268 | tx_queue->dev = ndev; | |
269 | /* enet DMA only understands physical addresses */ | |
270 | addr += sizeof(struct txbd8) *tx_queue->tx_ring_size; | |
271 | vaddr += sizeof(struct txbd8) *tx_queue->tx_ring_size; | |
272 | } | |
826aa4a0 | 273 | |
826aa4a0 | 274 | /* Start the rx descriptor ring where the tx ring leaves off */ |
fba4ed03 SG |
275 | for (i = 0; i < priv->num_rx_queues; i++) { |
276 | rx_queue = priv->rx_queue[i]; | |
277 | rx_queue->rx_bd_base = (struct rxbd8 *) vaddr; | |
278 | rx_queue->rx_bd_dma_base = addr; | |
279 | rx_queue->dev = ndev; | |
280 | addr += sizeof (struct rxbd8) * rx_queue->rx_ring_size; | |
281 | vaddr += sizeof (struct rxbd8) * rx_queue->rx_ring_size; | |
282 | } | |
826aa4a0 AV |
283 | |
284 | /* Setup the skbuff rings */ | |
fba4ed03 SG |
285 | for (i = 0; i < priv->num_tx_queues; i++) { |
286 | tx_queue = priv->tx_queue[i]; | |
287 | tx_queue->tx_skbuff = kmalloc(sizeof(*tx_queue->tx_skbuff) * | |
a12f801d | 288 | tx_queue->tx_ring_size, GFP_KERNEL); |
fba4ed03 SG |
289 | if (!tx_queue->tx_skbuff) { |
290 | if (netif_msg_ifup(priv)) | |
291 | pr_err("%s: Could not allocate tx_skbuff\n", | |
292 | ndev->name); | |
293 | goto cleanup; | |
294 | } | |
826aa4a0 | 295 | |
fba4ed03 SG |
296 | for (k = 0; k < tx_queue->tx_ring_size; k++) |
297 | tx_queue->tx_skbuff[k] = NULL; | |
298 | } | |
826aa4a0 | 299 | |
fba4ed03 SG |
300 | for (i = 0; i < priv->num_rx_queues; i++) { |
301 | rx_queue = priv->rx_queue[i]; | |
302 | rx_queue->rx_skbuff = kmalloc(sizeof(*rx_queue->rx_skbuff) * | |
a12f801d | 303 | rx_queue->rx_ring_size, GFP_KERNEL); |
826aa4a0 | 304 | |
fba4ed03 SG |
305 | if (!rx_queue->rx_skbuff) { |
306 | if (netif_msg_ifup(priv)) | |
307 | pr_err("%s: Could not allocate rx_skbuff\n", | |
308 | ndev->name); | |
309 | goto cleanup; | |
310 | } | |
311 | ||
312 | for (j = 0; j < rx_queue->rx_ring_size; j++) | |
313 | rx_queue->rx_skbuff[j] = NULL; | |
314 | } | |
826aa4a0 | 315 | |
8728327e AV |
316 | if (gfar_init_bds(ndev)) |
317 | goto cleanup; | |
826aa4a0 AV |
318 | |
319 | return 0; | |
320 | ||
321 | cleanup: | |
322 | free_skb_resources(priv); | |
323 | return -ENOMEM; | |
324 | } | |
325 | ||
fba4ed03 SG |
326 | static void gfar_init_tx_rx_base(struct gfar_private *priv) |
327 | { | |
46ceb60c | 328 | struct gfar __iomem *regs = priv->gfargrp[0].regs; |
18294ad1 | 329 | u32 __iomem *baddr; |
fba4ed03 SG |
330 | int i; |
331 | ||
332 | baddr = ®s->tbase0; | |
333 | for(i = 0; i < priv->num_tx_queues; i++) { | |
334 | gfar_write(baddr, priv->tx_queue[i]->tx_bd_dma_base); | |
335 | baddr += 2; | |
336 | } | |
337 | ||
338 | baddr = ®s->rbase0; | |
339 | for(i = 0; i < priv->num_rx_queues; i++) { | |
340 | gfar_write(baddr, priv->rx_queue[i]->rx_bd_dma_base); | |
341 | baddr += 2; | |
342 | } | |
343 | } | |
344 | ||
826aa4a0 AV |
345 | static void gfar_init_mac(struct net_device *ndev) |
346 | { | |
347 | struct gfar_private *priv = netdev_priv(ndev); | |
46ceb60c | 348 | struct gfar __iomem *regs = priv->gfargrp[0].regs; |
826aa4a0 AV |
349 | u32 rctrl = 0; |
350 | u32 tctrl = 0; | |
351 | u32 attrs = 0; | |
352 | ||
fba4ed03 SG |
353 | /* write the tx/rx base registers */ |
354 | gfar_init_tx_rx_base(priv); | |
32c513bc | 355 | |
826aa4a0 | 356 | /* Configure the coalescing support */ |
46ceb60c | 357 | gfar_configure_coalescing(priv, 0xFF, 0xFF); |
fba4ed03 | 358 | |
1ccb8389 | 359 | if (priv->rx_filer_enable) { |
fba4ed03 | 360 | rctrl |= RCTRL_FILREN; |
1ccb8389 SG |
361 | /* Program the RIR0 reg with the required distribution */ |
362 | gfar_write(®s->rir0, DEFAULT_RIR0); | |
363 | } | |
826aa4a0 AV |
364 | |
365 | if (priv->rx_csum_enable) | |
366 | rctrl |= RCTRL_CHECKSUMMING; | |
367 | ||
368 | if (priv->extended_hash) { | |
369 | rctrl |= RCTRL_EXTHASH; | |
370 | ||
371 | gfar_clear_exact_match(ndev); | |
372 | rctrl |= RCTRL_EMEN; | |
373 | } | |
374 | ||
375 | if (priv->padding) { | |
376 | rctrl &= ~RCTRL_PAL_MASK; | |
377 | rctrl |= RCTRL_PADDING(priv->padding); | |
378 | } | |
379 | ||
380 | /* keep vlan related bits if it's enabled */ | |
381 | if (priv->vlgrp) { | |
382 | rctrl |= RCTRL_VLEX | RCTRL_PRSDEP_INIT; | |
383 | tctrl |= TCTRL_VLINS; | |
384 | } | |
385 | ||
386 | /* Init rctrl based on our settings */ | |
387 | gfar_write(®s->rctrl, rctrl); | |
388 | ||
389 | if (ndev->features & NETIF_F_IP_CSUM) | |
390 | tctrl |= TCTRL_INIT_CSUM; | |
391 | ||
fba4ed03 SG |
392 | tctrl |= TCTRL_TXSCHED_PRIO; |
393 | ||
826aa4a0 AV |
394 | gfar_write(®s->tctrl, tctrl); |
395 | ||
396 | /* Set the extraction length and index */ | |
397 | attrs = ATTRELI_EL(priv->rx_stash_size) | | |
398 | ATTRELI_EI(priv->rx_stash_index); | |
399 | ||
400 | gfar_write(®s->attreli, attrs); | |
401 | ||
402 | /* Start with defaults, and add stashing or locking | |
403 | * depending on the approprate variables */ | |
404 | attrs = ATTR_INIT_SETTINGS; | |
405 | ||
406 | if (priv->bd_stash_en) | |
407 | attrs |= ATTR_BDSTASH; | |
408 | ||
409 | if (priv->rx_stash_size != 0) | |
410 | attrs |= ATTR_BUFSTASH; | |
411 | ||
412 | gfar_write(®s->attr, attrs); | |
413 | ||
414 | gfar_write(®s->fifo_tx_thr, priv->fifo_threshold); | |
415 | gfar_write(®s->fifo_tx_starve, priv->fifo_starve); | |
416 | gfar_write(®s->fifo_tx_starve_shutoff, priv->fifo_starve_off); | |
417 | } | |
418 | ||
a7f38041 SG |
419 | static struct net_device_stats *gfar_get_stats(struct net_device *dev) |
420 | { | |
421 | struct gfar_private *priv = netdev_priv(dev); | |
422 | struct netdev_queue *txq; | |
423 | unsigned long rx_packets = 0, rx_bytes = 0, rx_dropped = 0; | |
424 | unsigned long tx_packets = 0, tx_bytes = 0; | |
425 | int i = 0; | |
426 | ||
427 | for (i = 0; i < priv->num_rx_queues; i++) { | |
428 | rx_packets += priv->rx_queue[i]->stats.rx_packets; | |
429 | rx_bytes += priv->rx_queue[i]->stats.rx_bytes; | |
430 | rx_dropped += priv->rx_queue[i]->stats.rx_dropped; | |
431 | } | |
432 | ||
433 | dev->stats.rx_packets = rx_packets; | |
434 | dev->stats.rx_bytes = rx_bytes; | |
435 | dev->stats.rx_dropped = rx_dropped; | |
436 | ||
437 | for (i = 0; i < priv->num_tx_queues; i++) { | |
438 | txq = netdev_get_tx_queue(dev, i); | |
439 | tx_bytes += txq->tx_bytes; | |
440 | tx_packets += txq->tx_packets; | |
441 | } | |
442 | ||
443 | dev->stats.tx_bytes = tx_bytes; | |
444 | dev->stats.tx_packets = tx_packets; | |
445 | ||
446 | return &dev->stats; | |
447 | } | |
448 | ||
26ccfc37 AF |
449 | static const struct net_device_ops gfar_netdev_ops = { |
450 | .ndo_open = gfar_enet_open, | |
451 | .ndo_start_xmit = gfar_start_xmit, | |
452 | .ndo_stop = gfar_close, | |
453 | .ndo_change_mtu = gfar_change_mtu, | |
454 | .ndo_set_multicast_list = gfar_set_multi, | |
455 | .ndo_tx_timeout = gfar_timeout, | |
456 | .ndo_do_ioctl = gfar_ioctl, | |
a7f38041 | 457 | .ndo_get_stats = gfar_get_stats, |
26ccfc37 | 458 | .ndo_vlan_rx_register = gfar_vlan_rx_register, |
240c102d BH |
459 | .ndo_set_mac_address = eth_mac_addr, |
460 | .ndo_validate_addr = eth_validate_addr, | |
26ccfc37 AF |
461 | #ifdef CONFIG_NET_POLL_CONTROLLER |
462 | .ndo_poll_controller = gfar_netpoll, | |
463 | #endif | |
464 | }; | |
465 | ||
7a8b3372 SG |
466 | unsigned int ftp_rqfpr[MAX_FILER_IDX + 1]; |
467 | unsigned int ftp_rqfcr[MAX_FILER_IDX + 1]; | |
468 | ||
fba4ed03 SG |
469 | void lock_rx_qs(struct gfar_private *priv) |
470 | { | |
471 | int i = 0x0; | |
472 | ||
473 | for (i = 0; i < priv->num_rx_queues; i++) | |
474 | spin_lock(&priv->rx_queue[i]->rxlock); | |
475 | } | |
476 | ||
477 | void lock_tx_qs(struct gfar_private *priv) | |
478 | { | |
479 | int i = 0x0; | |
480 | ||
481 | for (i = 0; i < priv->num_tx_queues; i++) | |
482 | spin_lock(&priv->tx_queue[i]->txlock); | |
483 | } | |
484 | ||
485 | void unlock_rx_qs(struct gfar_private *priv) | |
486 | { | |
487 | int i = 0x0; | |
488 | ||
489 | for (i = 0; i < priv->num_rx_queues; i++) | |
490 | spin_unlock(&priv->rx_queue[i]->rxlock); | |
491 | } | |
492 | ||
493 | void unlock_tx_qs(struct gfar_private *priv) | |
494 | { | |
495 | int i = 0x0; | |
496 | ||
497 | for (i = 0; i < priv->num_tx_queues; i++) | |
498 | spin_unlock(&priv->tx_queue[i]->txlock); | |
499 | } | |
500 | ||
7f7f5316 AF |
501 | /* Returns 1 if incoming frames use an FCB */ |
502 | static inline int gfar_uses_fcb(struct gfar_private *priv) | |
0bbaf069 | 503 | { |
77ecaf2d | 504 | return priv->vlgrp || priv->rx_csum_enable; |
0bbaf069 | 505 | } |
bb40dcbb | 506 | |
fba4ed03 SG |
507 | static void free_tx_pointers(struct gfar_private *priv) |
508 | { | |
509 | int i = 0; | |
510 | ||
511 | for (i = 0; i < priv->num_tx_queues; i++) | |
512 | kfree(priv->tx_queue[i]); | |
513 | } | |
514 | ||
515 | static void free_rx_pointers(struct gfar_private *priv) | |
516 | { | |
517 | int i = 0; | |
518 | ||
519 | for (i = 0; i < priv->num_rx_queues; i++) | |
520 | kfree(priv->rx_queue[i]); | |
521 | } | |
522 | ||
46ceb60c SG |
523 | static void unmap_group_regs(struct gfar_private *priv) |
524 | { | |
525 | int i = 0; | |
526 | ||
527 | for (i = 0; i < MAXGROUPS; i++) | |
528 | if (priv->gfargrp[i].regs) | |
529 | iounmap(priv->gfargrp[i].regs); | |
530 | } | |
531 | ||
532 | static void disable_napi(struct gfar_private *priv) | |
533 | { | |
534 | int i = 0; | |
535 | ||
536 | for (i = 0; i < priv->num_grps; i++) | |
537 | napi_disable(&priv->gfargrp[i].napi); | |
538 | } | |
539 | ||
540 | static void enable_napi(struct gfar_private *priv) | |
541 | { | |
542 | int i = 0; | |
543 | ||
544 | for (i = 0; i < priv->num_grps; i++) | |
545 | napi_enable(&priv->gfargrp[i].napi); | |
546 | } | |
547 | ||
548 | static int gfar_parse_group(struct device_node *np, | |
549 | struct gfar_private *priv, const char *model) | |
550 | { | |
551 | u32 *queue_mask; | |
46ceb60c | 552 | |
7ce97d4f | 553 | priv->gfargrp[priv->num_grps].regs = of_iomap(np, 0); |
46ceb60c SG |
554 | if (!priv->gfargrp[priv->num_grps].regs) |
555 | return -ENOMEM; | |
556 | ||
557 | priv->gfargrp[priv->num_grps].interruptTransmit = | |
558 | irq_of_parse_and_map(np, 0); | |
559 | ||
560 | /* If we aren't the FEC we have multiple interrupts */ | |
561 | if (model && strcasecmp(model, "FEC")) { | |
562 | priv->gfargrp[priv->num_grps].interruptReceive = | |
563 | irq_of_parse_and_map(np, 1); | |
564 | priv->gfargrp[priv->num_grps].interruptError = | |
565 | irq_of_parse_and_map(np,2); | |
566 | if (priv->gfargrp[priv->num_grps].interruptTransmit < 0 || | |
567 | priv->gfargrp[priv->num_grps].interruptReceive < 0 || | |
568 | priv->gfargrp[priv->num_grps].interruptError < 0) { | |
569 | return -EINVAL; | |
570 | } | |
571 | } | |
572 | ||
573 | priv->gfargrp[priv->num_grps].grp_id = priv->num_grps; | |
574 | priv->gfargrp[priv->num_grps].priv = priv; | |
575 | spin_lock_init(&priv->gfargrp[priv->num_grps].grplock); | |
576 | if(priv->mode == MQ_MG_MODE) { | |
577 | queue_mask = (u32 *)of_get_property(np, | |
578 | "fsl,rx-bit-map", NULL); | |
579 | priv->gfargrp[priv->num_grps].rx_bit_map = | |
580 | queue_mask ? *queue_mask :(DEFAULT_MAPPING >> priv->num_grps); | |
581 | queue_mask = (u32 *)of_get_property(np, | |
582 | "fsl,tx-bit-map", NULL); | |
583 | priv->gfargrp[priv->num_grps].tx_bit_map = | |
584 | queue_mask ? *queue_mask : (DEFAULT_MAPPING >> priv->num_grps); | |
585 | } else { | |
586 | priv->gfargrp[priv->num_grps].rx_bit_map = 0xFF; | |
587 | priv->gfargrp[priv->num_grps].tx_bit_map = 0xFF; | |
588 | } | |
589 | priv->num_grps++; | |
590 | ||
591 | return 0; | |
592 | } | |
593 | ||
fba4ed03 | 594 | static int gfar_of_init(struct of_device *ofdev, struct net_device **pdev) |
b31a1d8b | 595 | { |
b31a1d8b AF |
596 | const char *model; |
597 | const char *ctype; | |
598 | const void *mac_addr; | |
fba4ed03 SG |
599 | int err = 0, i; |
600 | struct net_device *dev = NULL; | |
601 | struct gfar_private *priv = NULL; | |
602 | struct device_node *np = ofdev->node; | |
46ceb60c | 603 | struct device_node *child = NULL; |
4d7902f2 AF |
604 | const u32 *stash; |
605 | const u32 *stash_len; | |
606 | const u32 *stash_idx; | |
fba4ed03 SG |
607 | unsigned int num_tx_qs, num_rx_qs; |
608 | u32 *tx_queues, *rx_queues; | |
b31a1d8b AF |
609 | |
610 | if (!np || !of_device_is_available(np)) | |
611 | return -ENODEV; | |
612 | ||
fba4ed03 SG |
613 | /* parse the num of tx and rx queues */ |
614 | tx_queues = (u32 *)of_get_property(np, "fsl,num_tx_queues", NULL); | |
615 | num_tx_qs = tx_queues ? *tx_queues : 1; | |
616 | ||
617 | if (num_tx_qs > MAX_TX_QS) { | |
618 | printk(KERN_ERR "num_tx_qs(=%d) greater than MAX_TX_QS(=%d)\n", | |
619 | num_tx_qs, MAX_TX_QS); | |
620 | printk(KERN_ERR "Cannot do alloc_etherdev, aborting\n"); | |
621 | return -EINVAL; | |
622 | } | |
623 | ||
624 | rx_queues = (u32 *)of_get_property(np, "fsl,num_rx_queues", NULL); | |
625 | num_rx_qs = rx_queues ? *rx_queues : 1; | |
626 | ||
627 | if (num_rx_qs > MAX_RX_QS) { | |
628 | printk(KERN_ERR "num_rx_qs(=%d) greater than MAX_RX_QS(=%d)\n", | |
629 | num_tx_qs, MAX_TX_QS); | |
630 | printk(KERN_ERR "Cannot do alloc_etherdev, aborting\n"); | |
631 | return -EINVAL; | |
632 | } | |
633 | ||
634 | *pdev = alloc_etherdev_mq(sizeof(*priv), num_tx_qs); | |
635 | dev = *pdev; | |
636 | if (NULL == dev) | |
637 | return -ENOMEM; | |
638 | ||
639 | priv = netdev_priv(dev); | |
640 | priv->node = ofdev->node; | |
641 | priv->ndev = dev; | |
642 | ||
643 | dev->num_tx_queues = num_tx_qs; | |
644 | dev->real_num_tx_queues = num_tx_qs; | |
645 | priv->num_tx_queues = num_tx_qs; | |
646 | priv->num_rx_queues = num_rx_qs; | |
46ceb60c | 647 | priv->num_grps = 0x0; |
b31a1d8b AF |
648 | |
649 | model = of_get_property(np, "model", NULL); | |
650 | ||
46ceb60c SG |
651 | for (i = 0; i < MAXGROUPS; i++) |
652 | priv->gfargrp[i].regs = NULL; | |
b31a1d8b | 653 | |
46ceb60c SG |
654 | /* Parse and initialize group specific information */ |
655 | if (of_device_is_compatible(np, "fsl,etsec2")) { | |
656 | priv->mode = MQ_MG_MODE; | |
657 | for_each_child_of_node(np, child) { | |
658 | err = gfar_parse_group(child, priv, model); | |
659 | if (err) | |
660 | goto err_grp_init; | |
b31a1d8b | 661 | } |
46ceb60c SG |
662 | } else { |
663 | priv->mode = SQ_SG_MODE; | |
664 | err = gfar_parse_group(np, priv, model); | |
665 | if(err) | |
666 | goto err_grp_init; | |
b31a1d8b AF |
667 | } |
668 | ||
fba4ed03 SG |
669 | for (i = 0; i < priv->num_tx_queues; i++) |
670 | priv->tx_queue[i] = NULL; | |
671 | for (i = 0; i < priv->num_rx_queues; i++) | |
672 | priv->rx_queue[i] = NULL; | |
673 | ||
674 | for (i = 0; i < priv->num_tx_queues; i++) { | |
ed130589 | 675 | priv->tx_queue[i] = (struct gfar_priv_tx_q *)kzalloc( |
fba4ed03 SG |
676 | sizeof (struct gfar_priv_tx_q), GFP_KERNEL); |
677 | if (!priv->tx_queue[i]) { | |
678 | err = -ENOMEM; | |
679 | goto tx_alloc_failed; | |
680 | } | |
681 | priv->tx_queue[i]->tx_skbuff = NULL; | |
682 | priv->tx_queue[i]->qindex = i; | |
683 | priv->tx_queue[i]->dev = dev; | |
684 | spin_lock_init(&(priv->tx_queue[i]->txlock)); | |
685 | } | |
686 | ||
687 | for (i = 0; i < priv->num_rx_queues; i++) { | |
ed130589 | 688 | priv->rx_queue[i] = (struct gfar_priv_rx_q *)kzalloc( |
fba4ed03 SG |
689 | sizeof (struct gfar_priv_rx_q), GFP_KERNEL); |
690 | if (!priv->rx_queue[i]) { | |
691 | err = -ENOMEM; | |
692 | goto rx_alloc_failed; | |
693 | } | |
694 | priv->rx_queue[i]->rx_skbuff = NULL; | |
695 | priv->rx_queue[i]->qindex = i; | |
696 | priv->rx_queue[i]->dev = dev; | |
697 | spin_lock_init(&(priv->rx_queue[i]->rxlock)); | |
698 | } | |
699 | ||
700 | ||
4d7902f2 AF |
701 | stash = of_get_property(np, "bd-stash", NULL); |
702 | ||
a12f801d | 703 | if (stash) { |
4d7902f2 AF |
704 | priv->device_flags |= FSL_GIANFAR_DEV_HAS_BD_STASHING; |
705 | priv->bd_stash_en = 1; | |
706 | } | |
707 | ||
708 | stash_len = of_get_property(np, "rx-stash-len", NULL); | |
709 | ||
710 | if (stash_len) | |
711 | priv->rx_stash_size = *stash_len; | |
712 | ||
713 | stash_idx = of_get_property(np, "rx-stash-idx", NULL); | |
714 | ||
715 | if (stash_idx) | |
716 | priv->rx_stash_index = *stash_idx; | |
717 | ||
718 | if (stash_len || stash_idx) | |
719 | priv->device_flags |= FSL_GIANFAR_DEV_HAS_BUF_STASHING; | |
720 | ||
b31a1d8b AF |
721 | mac_addr = of_get_mac_address(np); |
722 | if (mac_addr) | |
723 | memcpy(dev->dev_addr, mac_addr, MAC_ADDR_LEN); | |
724 | ||
725 | if (model && !strcasecmp(model, "TSEC")) | |
726 | priv->device_flags = | |
727 | FSL_GIANFAR_DEV_HAS_GIGABIT | | |
728 | FSL_GIANFAR_DEV_HAS_COALESCE | | |
729 | FSL_GIANFAR_DEV_HAS_RMON | | |
730 | FSL_GIANFAR_DEV_HAS_MULTI_INTR; | |
731 | if (model && !strcasecmp(model, "eTSEC")) | |
732 | priv->device_flags = | |
733 | FSL_GIANFAR_DEV_HAS_GIGABIT | | |
734 | FSL_GIANFAR_DEV_HAS_COALESCE | | |
735 | FSL_GIANFAR_DEV_HAS_RMON | | |
736 | FSL_GIANFAR_DEV_HAS_MULTI_INTR | | |
2c2db48a | 737 | FSL_GIANFAR_DEV_HAS_PADDING | |
b31a1d8b AF |
738 | FSL_GIANFAR_DEV_HAS_CSUM | |
739 | FSL_GIANFAR_DEV_HAS_VLAN | | |
740 | FSL_GIANFAR_DEV_HAS_MAGIC_PACKET | | |
741 | FSL_GIANFAR_DEV_HAS_EXTENDED_HASH; | |
742 | ||
743 | ctype = of_get_property(np, "phy-connection-type", NULL); | |
744 | ||
745 | /* We only care about rgmii-id. The rest are autodetected */ | |
746 | if (ctype && !strcmp(ctype, "rgmii-id")) | |
747 | priv->interface = PHY_INTERFACE_MODE_RGMII_ID; | |
748 | else | |
749 | priv->interface = PHY_INTERFACE_MODE_MII; | |
750 | ||
751 | if (of_get_property(np, "fsl,magic-packet", NULL)) | |
752 | priv->device_flags |= FSL_GIANFAR_DEV_HAS_MAGIC_PACKET; | |
753 | ||
fe192a49 | 754 | priv->phy_node = of_parse_phandle(np, "phy-handle", 0); |
b31a1d8b AF |
755 | |
756 | /* Find the TBI PHY. If it's not there, we don't support SGMII */ | |
fe192a49 | 757 | priv->tbi_node = of_parse_phandle(np, "tbi-handle", 0); |
b31a1d8b AF |
758 | |
759 | return 0; | |
760 | ||
fba4ed03 SG |
761 | rx_alloc_failed: |
762 | free_rx_pointers(priv); | |
763 | tx_alloc_failed: | |
764 | free_tx_pointers(priv); | |
46ceb60c SG |
765 | err_grp_init: |
766 | unmap_group_regs(priv); | |
fba4ed03 | 767 | free_netdev(dev); |
b31a1d8b AF |
768 | return err; |
769 | } | |
770 | ||
0faac9f7 CW |
771 | /* Ioctl MII Interface */ |
772 | static int gfar_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) | |
773 | { | |
774 | struct gfar_private *priv = netdev_priv(dev); | |
775 | ||
776 | if (!netif_running(dev)) | |
777 | return -EINVAL; | |
778 | ||
779 | if (!priv->phydev) | |
780 | return -ENODEV; | |
781 | ||
782 | return phy_mii_ioctl(priv->phydev, if_mii(rq), cmd); | |
783 | } | |
784 | ||
fba4ed03 SG |
785 | static unsigned int reverse_bitmap(unsigned int bit_map, unsigned int max_qs) |
786 | { | |
787 | unsigned int new_bit_map = 0x0; | |
788 | int mask = 0x1 << (max_qs - 1), i; | |
789 | for (i = 0; i < max_qs; i++) { | |
790 | if (bit_map & mask) | |
791 | new_bit_map = new_bit_map + (1 << i); | |
792 | mask = mask >> 0x1; | |
793 | } | |
794 | return new_bit_map; | |
795 | } | |
7a8b3372 | 796 | |
18294ad1 AV |
797 | static u32 cluster_entry_per_class(struct gfar_private *priv, u32 rqfar, |
798 | u32 class) | |
7a8b3372 SG |
799 | { |
800 | u32 rqfpr = FPR_FILER_MASK; | |
801 | u32 rqfcr = 0x0; | |
802 | ||
803 | rqfar--; | |
804 | rqfcr = RQFCR_CLE | RQFCR_PID_MASK | RQFCR_CMP_EXACT; | |
805 | ftp_rqfpr[rqfar] = rqfpr; | |
806 | ftp_rqfcr[rqfar] = rqfcr; | |
807 | gfar_write_filer(priv, rqfar, rqfcr, rqfpr); | |
808 | ||
809 | rqfar--; | |
810 | rqfcr = RQFCR_CMP_NOMATCH; | |
811 | ftp_rqfpr[rqfar] = rqfpr; | |
812 | ftp_rqfcr[rqfar] = rqfcr; | |
813 | gfar_write_filer(priv, rqfar, rqfcr, rqfpr); | |
814 | ||
815 | rqfar--; | |
816 | rqfcr = RQFCR_CMP_EXACT | RQFCR_PID_PARSE | RQFCR_CLE | RQFCR_AND; | |
817 | rqfpr = class; | |
818 | ftp_rqfcr[rqfar] = rqfcr; | |
819 | ftp_rqfpr[rqfar] = rqfpr; | |
820 | gfar_write_filer(priv, rqfar, rqfcr, rqfpr); | |
821 | ||
822 | rqfar--; | |
823 | rqfcr = RQFCR_CMP_EXACT | RQFCR_PID_MASK | RQFCR_AND; | |
824 | rqfpr = class; | |
825 | ftp_rqfcr[rqfar] = rqfcr; | |
826 | ftp_rqfpr[rqfar] = rqfpr; | |
827 | gfar_write_filer(priv, rqfar, rqfcr, rqfpr); | |
828 | ||
829 | return rqfar; | |
830 | } | |
831 | ||
832 | static void gfar_init_filer_table(struct gfar_private *priv) | |
833 | { | |
834 | int i = 0x0; | |
835 | u32 rqfar = MAX_FILER_IDX; | |
836 | u32 rqfcr = 0x0; | |
837 | u32 rqfpr = FPR_FILER_MASK; | |
838 | ||
839 | /* Default rule */ | |
840 | rqfcr = RQFCR_CMP_MATCH; | |
841 | ftp_rqfcr[rqfar] = rqfcr; | |
842 | ftp_rqfpr[rqfar] = rqfpr; | |
843 | gfar_write_filer(priv, rqfar, rqfcr, rqfpr); | |
844 | ||
845 | rqfar = cluster_entry_per_class(priv, rqfar, RQFPR_IPV6); | |
846 | rqfar = cluster_entry_per_class(priv, rqfar, RQFPR_IPV6 | RQFPR_UDP); | |
847 | rqfar = cluster_entry_per_class(priv, rqfar, RQFPR_IPV6 | RQFPR_TCP); | |
848 | rqfar = cluster_entry_per_class(priv, rqfar, RQFPR_IPV4); | |
849 | rqfar = cluster_entry_per_class(priv, rqfar, RQFPR_IPV4 | RQFPR_UDP); | |
850 | rqfar = cluster_entry_per_class(priv, rqfar, RQFPR_IPV4 | RQFPR_TCP); | |
851 | ||
852 | /* cur_filer_idx indicated the fisrt non-masked rule */ | |
853 | priv->cur_filer_idx = rqfar; | |
854 | ||
855 | /* Rest are masked rules */ | |
856 | rqfcr = RQFCR_CMP_NOMATCH; | |
857 | for (i = 0; i < rqfar; i++) { | |
858 | ftp_rqfcr[i] = rqfcr; | |
859 | ftp_rqfpr[i] = rqfpr; | |
860 | gfar_write_filer(priv, i, rqfcr, rqfpr); | |
861 | } | |
862 | } | |
863 | ||
bb40dcbb AF |
864 | /* Set up the ethernet device structure, private data, |
865 | * and anything else we need before we start */ | |
b31a1d8b AF |
866 | static int gfar_probe(struct of_device *ofdev, |
867 | const struct of_device_id *match) | |
1da177e4 LT |
868 | { |
869 | u32 tempval; | |
870 | struct net_device *dev = NULL; | |
871 | struct gfar_private *priv = NULL; | |
f4983704 | 872 | struct gfar __iomem *regs = NULL; |
46ceb60c | 873 | int err = 0, i, grp_idx = 0; |
c50a5d9a | 874 | int len_devname; |
fba4ed03 | 875 | u32 rstat = 0, tstat = 0, rqueue = 0, tqueue = 0; |
46ceb60c | 876 | u32 isrg = 0; |
18294ad1 | 877 | u32 __iomem *baddr; |
1da177e4 | 878 | |
fba4ed03 | 879 | err = gfar_of_init(ofdev, &dev); |
1da177e4 | 880 | |
fba4ed03 SG |
881 | if (err) |
882 | return err; | |
1da177e4 LT |
883 | |
884 | priv = netdev_priv(dev); | |
4826857f KG |
885 | priv->ndev = dev; |
886 | priv->ofdev = ofdev; | |
b31a1d8b | 887 | priv->node = ofdev->node; |
4826857f | 888 | SET_NETDEV_DEV(dev, &ofdev->dev); |
1da177e4 | 889 | |
d87eb127 | 890 | spin_lock_init(&priv->bflock); |
ab939905 | 891 | INIT_WORK(&priv->reset_task, gfar_reset_task); |
1da177e4 | 892 | |
b31a1d8b | 893 | dev_set_drvdata(&ofdev->dev, priv); |
46ceb60c | 894 | regs = priv->gfargrp[0].regs; |
1da177e4 LT |
895 | |
896 | /* Stop the DMA engine now, in case it was running before */ | |
897 | /* (The firmware could have used it, and left it running). */ | |
257d938a | 898 | gfar_halt(dev); |
1da177e4 LT |
899 | |
900 | /* Reset MAC layer */ | |
f4983704 | 901 | gfar_write(®s->maccfg1, MACCFG1_SOFT_RESET); |
1da177e4 | 902 | |
b98ac702 AF |
903 | /* We need to delay at least 3 TX clocks */ |
904 | udelay(2); | |
905 | ||
1da177e4 | 906 | tempval = (MACCFG1_TX_FLOW | MACCFG1_RX_FLOW); |
f4983704 | 907 | gfar_write(®s->maccfg1, tempval); |
1da177e4 LT |
908 | |
909 | /* Initialize MACCFG2. */ | |
f4983704 | 910 | gfar_write(®s->maccfg2, MACCFG2_INIT_SETTINGS); |
1da177e4 LT |
911 | |
912 | /* Initialize ECNTRL */ | |
f4983704 | 913 | gfar_write(®s->ecntrl, ECNTRL_INIT_SETTINGS); |
1da177e4 | 914 | |
1da177e4 | 915 | /* Set the dev->base_addr to the gfar reg region */ |
f4983704 | 916 | dev->base_addr = (unsigned long) regs; |
1da177e4 | 917 | |
b31a1d8b | 918 | SET_NETDEV_DEV(dev, &ofdev->dev); |
1da177e4 LT |
919 | |
920 | /* Fill in the dev structure */ | |
1da177e4 | 921 | dev->watchdog_timeo = TX_TIMEOUT; |
1da177e4 | 922 | dev->mtu = 1500; |
26ccfc37 | 923 | dev->netdev_ops = &gfar_netdev_ops; |
0bbaf069 KG |
924 | dev->ethtool_ops = &gfar_ethtool_ops; |
925 | ||
fba4ed03 | 926 | /* Register for napi ...We are registering NAPI for each grp */ |
46ceb60c SG |
927 | for (i = 0; i < priv->num_grps; i++) |
928 | netif_napi_add(dev, &priv->gfargrp[i].napi, gfar_poll, GFAR_DEV_WEIGHT); | |
a12f801d | 929 | |
b31a1d8b | 930 | if (priv->device_flags & FSL_GIANFAR_DEV_HAS_CSUM) { |
0bbaf069 | 931 | priv->rx_csum_enable = 1; |
4669bc90 | 932 | dev->features |= NETIF_F_IP_CSUM | NETIF_F_SG | NETIF_F_HIGHDMA; |
0bbaf069 KG |
933 | } else |
934 | priv->rx_csum_enable = 0; | |
935 | ||
936 | priv->vlgrp = NULL; | |
1da177e4 | 937 | |
26ccfc37 | 938 | if (priv->device_flags & FSL_GIANFAR_DEV_HAS_VLAN) |
0bbaf069 | 939 | dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX; |
0bbaf069 | 940 | |
b31a1d8b | 941 | if (priv->device_flags & FSL_GIANFAR_DEV_HAS_EXTENDED_HASH) { |
0bbaf069 KG |
942 | priv->extended_hash = 1; |
943 | priv->hash_width = 9; | |
944 | ||
f4983704 SG |
945 | priv->hash_regs[0] = ®s->igaddr0; |
946 | priv->hash_regs[1] = ®s->igaddr1; | |
947 | priv->hash_regs[2] = ®s->igaddr2; | |
948 | priv->hash_regs[3] = ®s->igaddr3; | |
949 | priv->hash_regs[4] = ®s->igaddr4; | |
950 | priv->hash_regs[5] = ®s->igaddr5; | |
951 | priv->hash_regs[6] = ®s->igaddr6; | |
952 | priv->hash_regs[7] = ®s->igaddr7; | |
953 | priv->hash_regs[8] = ®s->gaddr0; | |
954 | priv->hash_regs[9] = ®s->gaddr1; | |
955 | priv->hash_regs[10] = ®s->gaddr2; | |
956 | priv->hash_regs[11] = ®s->gaddr3; | |
957 | priv->hash_regs[12] = ®s->gaddr4; | |
958 | priv->hash_regs[13] = ®s->gaddr5; | |
959 | priv->hash_regs[14] = ®s->gaddr6; | |
960 | priv->hash_regs[15] = ®s->gaddr7; | |
0bbaf069 KG |
961 | |
962 | } else { | |
963 | priv->extended_hash = 0; | |
964 | priv->hash_width = 8; | |
965 | ||
f4983704 SG |
966 | priv->hash_regs[0] = ®s->gaddr0; |
967 | priv->hash_regs[1] = ®s->gaddr1; | |
968 | priv->hash_regs[2] = ®s->gaddr2; | |
969 | priv->hash_regs[3] = ®s->gaddr3; | |
970 | priv->hash_regs[4] = ®s->gaddr4; | |
971 | priv->hash_regs[5] = ®s->gaddr5; | |
972 | priv->hash_regs[6] = ®s->gaddr6; | |
973 | priv->hash_regs[7] = ®s->gaddr7; | |
0bbaf069 KG |
974 | } |
975 | ||
b31a1d8b | 976 | if (priv->device_flags & FSL_GIANFAR_DEV_HAS_PADDING) |
0bbaf069 KG |
977 | priv->padding = DEFAULT_PADDING; |
978 | else | |
979 | priv->padding = 0; | |
980 | ||
0bbaf069 KG |
981 | if (dev->features & NETIF_F_IP_CSUM) |
982 | dev->hard_header_len += GMAC_FCB_LEN; | |
1da177e4 | 983 | |
46ceb60c SG |
984 | /* Program the isrg regs only if number of grps > 1 */ |
985 | if (priv->num_grps > 1) { | |
986 | baddr = ®s->isrg0; | |
987 | for (i = 0; i < priv->num_grps; i++) { | |
988 | isrg |= (priv->gfargrp[i].rx_bit_map << ISRG_SHIFT_RX); | |
989 | isrg |= (priv->gfargrp[i].tx_bit_map << ISRG_SHIFT_TX); | |
990 | gfar_write(baddr, isrg); | |
991 | baddr++; | |
992 | isrg = 0x0; | |
993 | } | |
994 | } | |
995 | ||
fba4ed03 | 996 | /* Need to reverse the bit maps as bit_map's MSB is q0 |
984b3f57 | 997 | * but, for_each_set_bit parses from right to left, which |
fba4ed03 | 998 | * basically reverses the queue numbers */ |
46ceb60c SG |
999 | for (i = 0; i< priv->num_grps; i++) { |
1000 | priv->gfargrp[i].tx_bit_map = reverse_bitmap( | |
1001 | priv->gfargrp[i].tx_bit_map, MAX_TX_QS); | |
1002 | priv->gfargrp[i].rx_bit_map = reverse_bitmap( | |
1003 | priv->gfargrp[i].rx_bit_map, MAX_RX_QS); | |
1004 | } | |
1005 | ||
1006 | /* Calculate RSTAT, TSTAT, RQUEUE and TQUEUE values, | |
1007 | * also assign queues to groups */ | |
1008 | for (grp_idx = 0; grp_idx < priv->num_grps; grp_idx++) { | |
1009 | priv->gfargrp[grp_idx].num_rx_queues = 0x0; | |
984b3f57 | 1010 | for_each_set_bit(i, &priv->gfargrp[grp_idx].rx_bit_map, |
46ceb60c SG |
1011 | priv->num_rx_queues) { |
1012 | priv->gfargrp[grp_idx].num_rx_queues++; | |
1013 | priv->rx_queue[i]->grp = &priv->gfargrp[grp_idx]; | |
1014 | rstat = rstat | (RSTAT_CLEAR_RHALT >> i); | |
1015 | rqueue = rqueue | ((RQUEUE_EN0 | RQUEUE_EX0) >> i); | |
1016 | } | |
1017 | priv->gfargrp[grp_idx].num_tx_queues = 0x0; | |
984b3f57 | 1018 | for_each_set_bit(i, &priv->gfargrp[grp_idx].tx_bit_map, |
46ceb60c SG |
1019 | priv->num_tx_queues) { |
1020 | priv->gfargrp[grp_idx].num_tx_queues++; | |
1021 | priv->tx_queue[i]->grp = &priv->gfargrp[grp_idx]; | |
1022 | tstat = tstat | (TSTAT_CLEAR_THALT >> i); | |
1023 | tqueue = tqueue | (TQUEUE_EN0 >> i); | |
1024 | } | |
1025 | priv->gfargrp[grp_idx].rstat = rstat; | |
1026 | priv->gfargrp[grp_idx].tstat = tstat; | |
1027 | rstat = tstat =0; | |
fba4ed03 | 1028 | } |
fba4ed03 SG |
1029 | |
1030 | gfar_write(®s->rqueue, rqueue); | |
1031 | gfar_write(®s->tqueue, tqueue); | |
1032 | ||
1da177e4 | 1033 | priv->rx_buffer_size = DEFAULT_RX_BUFFER_SIZE; |
1da177e4 | 1034 | |
a12f801d | 1035 | /* Initializing some of the rx/tx queue level parameters */ |
fba4ed03 SG |
1036 | for (i = 0; i < priv->num_tx_queues; i++) { |
1037 | priv->tx_queue[i]->tx_ring_size = DEFAULT_TX_RING_SIZE; | |
1038 | priv->tx_queue[i]->num_txbdfree = DEFAULT_TX_RING_SIZE; | |
1039 | priv->tx_queue[i]->txcoalescing = DEFAULT_TX_COALESCE; | |
1040 | priv->tx_queue[i]->txic = DEFAULT_TXIC; | |
1041 | } | |
a12f801d | 1042 | |
fba4ed03 SG |
1043 | for (i = 0; i < priv->num_rx_queues; i++) { |
1044 | priv->rx_queue[i]->rx_ring_size = DEFAULT_RX_RING_SIZE; | |
1045 | priv->rx_queue[i]->rxcoalescing = DEFAULT_RX_COALESCE; | |
1046 | priv->rx_queue[i]->rxic = DEFAULT_RXIC; | |
1047 | } | |
1da177e4 | 1048 | |
1ccb8389 SG |
1049 | /* enable filer if using multiple RX queues*/ |
1050 | if(priv->num_rx_queues > 1) | |
1051 | priv->rx_filer_enable = 1; | |
0bbaf069 KG |
1052 | /* Enable most messages by default */ |
1053 | priv->msg_enable = (NETIF_MSG_IFUP << 1 ) - 1; | |
1054 | ||
d3eab82b TP |
1055 | /* Carrier starts down, phylib will bring it up */ |
1056 | netif_carrier_off(dev); | |
1057 | ||
1da177e4 LT |
1058 | err = register_netdev(dev); |
1059 | ||
1060 | if (err) { | |
1061 | printk(KERN_ERR "%s: Cannot register net device, aborting.\n", | |
1062 | dev->name); | |
1063 | goto register_fail; | |
1064 | } | |
1065 | ||
2884e5cc AV |
1066 | device_init_wakeup(&dev->dev, |
1067 | priv->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET); | |
1068 | ||
c50a5d9a DH |
1069 | /* fill out IRQ number and name fields */ |
1070 | len_devname = strlen(dev->name); | |
46ceb60c SG |
1071 | for (i = 0; i < priv->num_grps; i++) { |
1072 | strncpy(&priv->gfargrp[i].int_name_tx[0], dev->name, | |
1073 | len_devname); | |
1074 | if (priv->device_flags & FSL_GIANFAR_DEV_HAS_MULTI_INTR) { | |
1075 | strncpy(&priv->gfargrp[i].int_name_tx[len_devname], | |
1076 | "_g", sizeof("_g")); | |
1077 | priv->gfargrp[i].int_name_tx[ | |
1078 | strlen(priv->gfargrp[i].int_name_tx)] = i+48; | |
1079 | strncpy(&priv->gfargrp[i].int_name_tx[strlen( | |
1080 | priv->gfargrp[i].int_name_tx)], | |
1081 | "_tx", sizeof("_tx") + 1); | |
1082 | ||
1083 | strncpy(&priv->gfargrp[i].int_name_rx[0], dev->name, | |
1084 | len_devname); | |
1085 | strncpy(&priv->gfargrp[i].int_name_rx[len_devname], | |
1086 | "_g", sizeof("_g")); | |
1087 | priv->gfargrp[i].int_name_rx[ | |
1088 | strlen(priv->gfargrp[i].int_name_rx)] = i+48; | |
1089 | strncpy(&priv->gfargrp[i].int_name_rx[strlen( | |
1090 | priv->gfargrp[i].int_name_rx)], | |
1091 | "_rx", sizeof("_rx") + 1); | |
1092 | ||
1093 | strncpy(&priv->gfargrp[i].int_name_er[0], dev->name, | |
1094 | len_devname); | |
1095 | strncpy(&priv->gfargrp[i].int_name_er[len_devname], | |
1096 | "_g", sizeof("_g")); | |
1097 | priv->gfargrp[i].int_name_er[strlen( | |
1098 | priv->gfargrp[i].int_name_er)] = i+48; | |
1099 | strncpy(&priv->gfargrp[i].int_name_er[strlen(\ | |
1100 | priv->gfargrp[i].int_name_er)], | |
1101 | "_er", sizeof("_er") + 1); | |
1102 | } else | |
1103 | priv->gfargrp[i].int_name_tx[len_devname] = '\0'; | |
1104 | } | |
c50a5d9a | 1105 | |
7a8b3372 SG |
1106 | /* Initialize the filer table */ |
1107 | gfar_init_filer_table(priv); | |
1108 | ||
7f7f5316 AF |
1109 | /* Create all the sysfs files */ |
1110 | gfar_init_sysfs(dev); | |
1111 | ||
1da177e4 | 1112 | /* Print out the device info */ |
e174961c | 1113 | printk(KERN_INFO DEVICE_NAME "%pM\n", dev->name, dev->dev_addr); |
1da177e4 LT |
1114 | |
1115 | /* Even more device info helps when determining which kernel */ | |
7f7f5316 | 1116 | /* provided which set of benchmarks. */ |
1da177e4 | 1117 | printk(KERN_INFO "%s: Running with NAPI enabled\n", dev->name); |
fba4ed03 | 1118 | for (i = 0; i < priv->num_rx_queues; i++) |
ddc01b3b | 1119 | printk(KERN_INFO "%s: RX BD ring size for Q[%d]: %d\n", |
fba4ed03 SG |
1120 | dev->name, i, priv->rx_queue[i]->rx_ring_size); |
1121 | for(i = 0; i < priv->num_tx_queues; i++) | |
ddc01b3b | 1122 | printk(KERN_INFO "%s: TX BD ring size for Q[%d]: %d\n", |
fba4ed03 | 1123 | dev->name, i, priv->tx_queue[i]->tx_ring_size); |
1da177e4 LT |
1124 | |
1125 | return 0; | |
1126 | ||
1127 | register_fail: | |
46ceb60c | 1128 | unmap_group_regs(priv); |
fba4ed03 SG |
1129 | free_tx_pointers(priv); |
1130 | free_rx_pointers(priv); | |
fe192a49 GL |
1131 | if (priv->phy_node) |
1132 | of_node_put(priv->phy_node); | |
1133 | if (priv->tbi_node) | |
1134 | of_node_put(priv->tbi_node); | |
1da177e4 | 1135 | free_netdev(dev); |
bb40dcbb | 1136 | return err; |
1da177e4 LT |
1137 | } |
1138 | ||
b31a1d8b | 1139 | static int gfar_remove(struct of_device *ofdev) |
1da177e4 | 1140 | { |
b31a1d8b | 1141 | struct gfar_private *priv = dev_get_drvdata(&ofdev->dev); |
1da177e4 | 1142 | |
fe192a49 GL |
1143 | if (priv->phy_node) |
1144 | of_node_put(priv->phy_node); | |
1145 | if (priv->tbi_node) | |
1146 | of_node_put(priv->tbi_node); | |
1147 | ||
b31a1d8b | 1148 | dev_set_drvdata(&ofdev->dev, NULL); |
1da177e4 | 1149 | |
d9d8e041 | 1150 | unregister_netdev(priv->ndev); |
46ceb60c | 1151 | unmap_group_regs(priv); |
4826857f | 1152 | free_netdev(priv->ndev); |
1da177e4 LT |
1153 | |
1154 | return 0; | |
1155 | } | |
1156 | ||
d87eb127 | 1157 | #ifdef CONFIG_PM |
be926fc4 AV |
1158 | |
1159 | static int gfar_suspend(struct device *dev) | |
d87eb127 | 1160 | { |
be926fc4 AV |
1161 | struct gfar_private *priv = dev_get_drvdata(dev); |
1162 | struct net_device *ndev = priv->ndev; | |
46ceb60c | 1163 | struct gfar __iomem *regs = priv->gfargrp[0].regs; |
d87eb127 SW |
1164 | unsigned long flags; |
1165 | u32 tempval; | |
1166 | ||
1167 | int magic_packet = priv->wol_en && | |
b31a1d8b | 1168 | (priv->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET); |
d87eb127 | 1169 | |
be926fc4 | 1170 | netif_device_detach(ndev); |
d87eb127 | 1171 | |
be926fc4 | 1172 | if (netif_running(ndev)) { |
fba4ed03 SG |
1173 | |
1174 | local_irq_save(flags); | |
1175 | lock_tx_qs(priv); | |
1176 | lock_rx_qs(priv); | |
d87eb127 | 1177 | |
be926fc4 | 1178 | gfar_halt_nodisable(ndev); |
d87eb127 SW |
1179 | |
1180 | /* Disable Tx, and Rx if wake-on-LAN is disabled. */ | |
f4983704 | 1181 | tempval = gfar_read(®s->maccfg1); |
d87eb127 SW |
1182 | |
1183 | tempval &= ~MACCFG1_TX_EN; | |
1184 | ||
1185 | if (!magic_packet) | |
1186 | tempval &= ~MACCFG1_RX_EN; | |
1187 | ||
f4983704 | 1188 | gfar_write(®s->maccfg1, tempval); |
d87eb127 | 1189 | |
fba4ed03 SG |
1190 | unlock_rx_qs(priv); |
1191 | unlock_tx_qs(priv); | |
1192 | local_irq_restore(flags); | |
d87eb127 | 1193 | |
46ceb60c | 1194 | disable_napi(priv); |
d87eb127 SW |
1195 | |
1196 | if (magic_packet) { | |
1197 | /* Enable interrupt on Magic Packet */ | |
f4983704 | 1198 | gfar_write(®s->imask, IMASK_MAG); |
d87eb127 SW |
1199 | |
1200 | /* Enable Magic Packet mode */ | |
f4983704 | 1201 | tempval = gfar_read(®s->maccfg2); |
d87eb127 | 1202 | tempval |= MACCFG2_MPEN; |
f4983704 | 1203 | gfar_write(®s->maccfg2, tempval); |
d87eb127 SW |
1204 | } else { |
1205 | phy_stop(priv->phydev); | |
1206 | } | |
1207 | } | |
1208 | ||
1209 | return 0; | |
1210 | } | |
1211 | ||
be926fc4 | 1212 | static int gfar_resume(struct device *dev) |
d87eb127 | 1213 | { |
be926fc4 AV |
1214 | struct gfar_private *priv = dev_get_drvdata(dev); |
1215 | struct net_device *ndev = priv->ndev; | |
46ceb60c | 1216 | struct gfar __iomem *regs = priv->gfargrp[0].regs; |
d87eb127 SW |
1217 | unsigned long flags; |
1218 | u32 tempval; | |
1219 | int magic_packet = priv->wol_en && | |
b31a1d8b | 1220 | (priv->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET); |
d87eb127 | 1221 | |
be926fc4 AV |
1222 | if (!netif_running(ndev)) { |
1223 | netif_device_attach(ndev); | |
d87eb127 SW |
1224 | return 0; |
1225 | } | |
1226 | ||
1227 | if (!magic_packet && priv->phydev) | |
1228 | phy_start(priv->phydev); | |
1229 | ||
1230 | /* Disable Magic Packet mode, in case something | |
1231 | * else woke us up. | |
1232 | */ | |
fba4ed03 SG |
1233 | local_irq_save(flags); |
1234 | lock_tx_qs(priv); | |
1235 | lock_rx_qs(priv); | |
d87eb127 | 1236 | |
f4983704 | 1237 | tempval = gfar_read(®s->maccfg2); |
d87eb127 | 1238 | tempval &= ~MACCFG2_MPEN; |
f4983704 | 1239 | gfar_write(®s->maccfg2, tempval); |
d87eb127 | 1240 | |
be926fc4 | 1241 | gfar_start(ndev); |
d87eb127 | 1242 | |
fba4ed03 SG |
1243 | unlock_rx_qs(priv); |
1244 | unlock_tx_qs(priv); | |
1245 | local_irq_restore(flags); | |
d87eb127 | 1246 | |
be926fc4 AV |
1247 | netif_device_attach(ndev); |
1248 | ||
46ceb60c | 1249 | enable_napi(priv); |
be926fc4 AV |
1250 | |
1251 | return 0; | |
1252 | } | |
1253 | ||
1254 | static int gfar_restore(struct device *dev) | |
1255 | { | |
1256 | struct gfar_private *priv = dev_get_drvdata(dev); | |
1257 | struct net_device *ndev = priv->ndev; | |
1258 | ||
1259 | if (!netif_running(ndev)) | |
1260 | return 0; | |
1261 | ||
1262 | gfar_init_bds(ndev); | |
1263 | init_registers(ndev); | |
1264 | gfar_set_mac_address(ndev); | |
1265 | gfar_init_mac(ndev); | |
1266 | gfar_start(ndev); | |
1267 | ||
1268 | priv->oldlink = 0; | |
1269 | priv->oldspeed = 0; | |
1270 | priv->oldduplex = -1; | |
1271 | ||
1272 | if (priv->phydev) | |
1273 | phy_start(priv->phydev); | |
d87eb127 | 1274 | |
be926fc4 | 1275 | netif_device_attach(ndev); |
5ea681d4 | 1276 | enable_napi(priv); |
d87eb127 SW |
1277 | |
1278 | return 0; | |
1279 | } | |
be926fc4 AV |
1280 | |
1281 | static struct dev_pm_ops gfar_pm_ops = { | |
1282 | .suspend = gfar_suspend, | |
1283 | .resume = gfar_resume, | |
1284 | .freeze = gfar_suspend, | |
1285 | .thaw = gfar_resume, | |
1286 | .restore = gfar_restore, | |
1287 | }; | |
1288 | ||
1289 | #define GFAR_PM_OPS (&gfar_pm_ops) | |
1290 | ||
1291 | static int gfar_legacy_suspend(struct of_device *ofdev, pm_message_t state) | |
1292 | { | |
1293 | return gfar_suspend(&ofdev->dev); | |
1294 | } | |
1295 | ||
1296 | static int gfar_legacy_resume(struct of_device *ofdev) | |
1297 | { | |
1298 | return gfar_resume(&ofdev->dev); | |
1299 | } | |
1300 | ||
d87eb127 | 1301 | #else |
be926fc4 AV |
1302 | |
1303 | #define GFAR_PM_OPS NULL | |
1304 | #define gfar_legacy_suspend NULL | |
1305 | #define gfar_legacy_resume NULL | |
1306 | ||
d87eb127 | 1307 | #endif |
1da177e4 | 1308 | |
e8a2b6a4 AF |
1309 | /* Reads the controller's registers to determine what interface |
1310 | * connects it to the PHY. | |
1311 | */ | |
1312 | static phy_interface_t gfar_get_interface(struct net_device *dev) | |
1313 | { | |
1314 | struct gfar_private *priv = netdev_priv(dev); | |
46ceb60c | 1315 | struct gfar __iomem *regs = priv->gfargrp[0].regs; |
f4983704 SG |
1316 | u32 ecntrl; |
1317 | ||
f4983704 | 1318 | ecntrl = gfar_read(®s->ecntrl); |
e8a2b6a4 AF |
1319 | |
1320 | if (ecntrl & ECNTRL_SGMII_MODE) | |
1321 | return PHY_INTERFACE_MODE_SGMII; | |
1322 | ||
1323 | if (ecntrl & ECNTRL_TBI_MODE) { | |
1324 | if (ecntrl & ECNTRL_REDUCED_MODE) | |
1325 | return PHY_INTERFACE_MODE_RTBI; | |
1326 | else | |
1327 | return PHY_INTERFACE_MODE_TBI; | |
1328 | } | |
1329 | ||
1330 | if (ecntrl & ECNTRL_REDUCED_MODE) { | |
1331 | if (ecntrl & ECNTRL_REDUCED_MII_MODE) | |
1332 | return PHY_INTERFACE_MODE_RMII; | |
7132ab7f | 1333 | else { |
b31a1d8b | 1334 | phy_interface_t interface = priv->interface; |
7132ab7f AF |
1335 | |
1336 | /* | |
1337 | * This isn't autodetected right now, so it must | |
1338 | * be set by the device tree or platform code. | |
1339 | */ | |
1340 | if (interface == PHY_INTERFACE_MODE_RGMII_ID) | |
1341 | return PHY_INTERFACE_MODE_RGMII_ID; | |
1342 | ||
e8a2b6a4 | 1343 | return PHY_INTERFACE_MODE_RGMII; |
7132ab7f | 1344 | } |
e8a2b6a4 AF |
1345 | } |
1346 | ||
b31a1d8b | 1347 | if (priv->device_flags & FSL_GIANFAR_DEV_HAS_GIGABIT) |
e8a2b6a4 AF |
1348 | return PHY_INTERFACE_MODE_GMII; |
1349 | ||
1350 | return PHY_INTERFACE_MODE_MII; | |
1351 | } | |
1352 | ||
1353 | ||
bb40dcbb AF |
1354 | /* Initializes driver's PHY state, and attaches to the PHY. |
1355 | * Returns 0 on success. | |
1da177e4 LT |
1356 | */ |
1357 | static int init_phy(struct net_device *dev) | |
1358 | { | |
1359 | struct gfar_private *priv = netdev_priv(dev); | |
bb40dcbb | 1360 | uint gigabit_support = |
b31a1d8b | 1361 | priv->device_flags & FSL_GIANFAR_DEV_HAS_GIGABIT ? |
bb40dcbb | 1362 | SUPPORTED_1000baseT_Full : 0; |
e8a2b6a4 | 1363 | phy_interface_t interface; |
1da177e4 LT |
1364 | |
1365 | priv->oldlink = 0; | |
1366 | priv->oldspeed = 0; | |
1367 | priv->oldduplex = -1; | |
1368 | ||
e8a2b6a4 AF |
1369 | interface = gfar_get_interface(dev); |
1370 | ||
1db780f8 AV |
1371 | priv->phydev = of_phy_connect(dev, priv->phy_node, &adjust_link, 0, |
1372 | interface); | |
1373 | if (!priv->phydev) | |
1374 | priv->phydev = of_phy_connect_fixed_link(dev, &adjust_link, | |
1375 | interface); | |
1376 | if (!priv->phydev) { | |
1377 | dev_err(&dev->dev, "could not attach to PHY\n"); | |
1378 | return -ENODEV; | |
fe192a49 | 1379 | } |
1da177e4 | 1380 | |
d3c12873 KJ |
1381 | if (interface == PHY_INTERFACE_MODE_SGMII) |
1382 | gfar_configure_serdes(dev); | |
1383 | ||
bb40dcbb | 1384 | /* Remove any features not supported by the controller */ |
fe192a49 GL |
1385 | priv->phydev->supported &= (GFAR_SUPPORTED | gigabit_support); |
1386 | priv->phydev->advertising = priv->phydev->supported; | |
1da177e4 LT |
1387 | |
1388 | return 0; | |
1da177e4 LT |
1389 | } |
1390 | ||
d0313587 PG |
1391 | /* |
1392 | * Initialize TBI PHY interface for communicating with the | |
1393 | * SERDES lynx PHY on the chip. We communicate with this PHY | |
1394 | * through the MDIO bus on each controller, treating it as a | |
1395 | * "normal" PHY at the address found in the TBIPA register. We assume | |
1396 | * that the TBIPA register is valid. Either the MDIO bus code will set | |
1397 | * it to a value that doesn't conflict with other PHYs on the bus, or the | |
1398 | * value doesn't matter, as there are no other PHYs on the bus. | |
1399 | */ | |
d3c12873 KJ |
1400 | static void gfar_configure_serdes(struct net_device *dev) |
1401 | { | |
1402 | struct gfar_private *priv = netdev_priv(dev); | |
fe192a49 GL |
1403 | struct phy_device *tbiphy; |
1404 | ||
1405 | if (!priv->tbi_node) { | |
1406 | dev_warn(&dev->dev, "error: SGMII mode requires that the " | |
1407 | "device tree specify a tbi-handle\n"); | |
1408 | return; | |
1409 | } | |
c132419e | 1410 | |
fe192a49 GL |
1411 | tbiphy = of_phy_find_device(priv->tbi_node); |
1412 | if (!tbiphy) { | |
1413 | dev_err(&dev->dev, "error: Could not get TBI device\n"); | |
b31a1d8b AF |
1414 | return; |
1415 | } | |
d3c12873 | 1416 | |
b31a1d8b AF |
1417 | /* |
1418 | * If the link is already up, we must already be ok, and don't need to | |
bdb59f94 TP |
1419 | * configure and reset the TBI<->SerDes link. Maybe U-Boot configured |
1420 | * everything for us? Resetting it takes the link down and requires | |
1421 | * several seconds for it to come back. | |
1422 | */ | |
fe192a49 | 1423 | if (phy_read(tbiphy, MII_BMSR) & BMSR_LSTATUS) |
b31a1d8b | 1424 | return; |
d3c12873 | 1425 | |
d0313587 | 1426 | /* Single clk mode, mii mode off(for serdes communication) */ |
fe192a49 | 1427 | phy_write(tbiphy, MII_TBICON, TBICON_CLK_SELECT); |
d3c12873 | 1428 | |
fe192a49 | 1429 | phy_write(tbiphy, MII_ADVERTISE, |
d3c12873 KJ |
1430 | ADVERTISE_1000XFULL | ADVERTISE_1000XPAUSE | |
1431 | ADVERTISE_1000XPSE_ASYM); | |
1432 | ||
fe192a49 | 1433 | phy_write(tbiphy, MII_BMCR, BMCR_ANENABLE | |
d3c12873 KJ |
1434 | BMCR_ANRESTART | BMCR_FULLDPLX | BMCR_SPEED1000); |
1435 | } | |
1436 | ||
1da177e4 LT |
1437 | static void init_registers(struct net_device *dev) |
1438 | { | |
1439 | struct gfar_private *priv = netdev_priv(dev); | |
f4983704 | 1440 | struct gfar __iomem *regs = NULL; |
46ceb60c | 1441 | int i = 0; |
1da177e4 | 1442 | |
46ceb60c SG |
1443 | for (i = 0; i < priv->num_grps; i++) { |
1444 | regs = priv->gfargrp[i].regs; | |
1445 | /* Clear IEVENT */ | |
1446 | gfar_write(®s->ievent, IEVENT_INIT_CLEAR); | |
1da177e4 | 1447 | |
46ceb60c SG |
1448 | /* Initialize IMASK */ |
1449 | gfar_write(®s->imask, IMASK_INIT_CLEAR); | |
1450 | } | |
1da177e4 | 1451 | |
46ceb60c | 1452 | regs = priv->gfargrp[0].regs; |
1da177e4 | 1453 | /* Init hash registers to zero */ |
f4983704 SG |
1454 | gfar_write(®s->igaddr0, 0); |
1455 | gfar_write(®s->igaddr1, 0); | |
1456 | gfar_write(®s->igaddr2, 0); | |
1457 | gfar_write(®s->igaddr3, 0); | |
1458 | gfar_write(®s->igaddr4, 0); | |
1459 | gfar_write(®s->igaddr5, 0); | |
1460 | gfar_write(®s->igaddr6, 0); | |
1461 | gfar_write(®s->igaddr7, 0); | |
1462 | ||
1463 | gfar_write(®s->gaddr0, 0); | |
1464 | gfar_write(®s->gaddr1, 0); | |
1465 | gfar_write(®s->gaddr2, 0); | |
1466 | gfar_write(®s->gaddr3, 0); | |
1467 | gfar_write(®s->gaddr4, 0); | |
1468 | gfar_write(®s->gaddr5, 0); | |
1469 | gfar_write(®s->gaddr6, 0); | |
1470 | gfar_write(®s->gaddr7, 0); | |
1da177e4 | 1471 | |
1da177e4 | 1472 | /* Zero out the rmon mib registers if it has them */ |
b31a1d8b | 1473 | if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON) { |
f4983704 | 1474 | memset_io(&(regs->rmon), 0, sizeof (struct rmon_mib)); |
1da177e4 LT |
1475 | |
1476 | /* Mask off the CAM interrupts */ | |
f4983704 SG |
1477 | gfar_write(®s->rmon.cam1, 0xffffffff); |
1478 | gfar_write(®s->rmon.cam2, 0xffffffff); | |
1da177e4 LT |
1479 | } |
1480 | ||
1481 | /* Initialize the max receive buffer length */ | |
f4983704 | 1482 | gfar_write(®s->mrblr, priv->rx_buffer_size); |
1da177e4 | 1483 | |
1da177e4 | 1484 | /* Initialize the Minimum Frame Length Register */ |
f4983704 | 1485 | gfar_write(®s->minflr, MINFLR_INIT_SETTINGS); |
1da177e4 LT |
1486 | } |
1487 | ||
0bbaf069 KG |
1488 | |
1489 | /* Halt the receive and transmit queues */ | |
d87eb127 | 1490 | static void gfar_halt_nodisable(struct net_device *dev) |
1da177e4 LT |
1491 | { |
1492 | struct gfar_private *priv = netdev_priv(dev); | |
46ceb60c | 1493 | struct gfar __iomem *regs = NULL; |
1da177e4 | 1494 | u32 tempval; |
46ceb60c | 1495 | int i = 0; |
1da177e4 | 1496 | |
46ceb60c SG |
1497 | for (i = 0; i < priv->num_grps; i++) { |
1498 | regs = priv->gfargrp[i].regs; | |
1499 | /* Mask all interrupts */ | |
1500 | gfar_write(®s->imask, IMASK_INIT_CLEAR); | |
1da177e4 | 1501 | |
46ceb60c SG |
1502 | /* Clear all interrupts */ |
1503 | gfar_write(®s->ievent, IEVENT_INIT_CLEAR); | |
1504 | } | |
1da177e4 | 1505 | |
46ceb60c | 1506 | regs = priv->gfargrp[0].regs; |
1da177e4 | 1507 | /* Stop the DMA, and wait for it to stop */ |
f4983704 | 1508 | tempval = gfar_read(®s->dmactrl); |
1da177e4 LT |
1509 | if ((tempval & (DMACTRL_GRS | DMACTRL_GTS)) |
1510 | != (DMACTRL_GRS | DMACTRL_GTS)) { | |
1511 | tempval |= (DMACTRL_GRS | DMACTRL_GTS); | |
f4983704 | 1512 | gfar_write(®s->dmactrl, tempval); |
1da177e4 | 1513 | |
761ed01b AF |
1514 | spin_event_timeout(((gfar_read(®s->ievent) & |
1515 | (IEVENT_GRSC | IEVENT_GTSC)) == | |
1516 | (IEVENT_GRSC | IEVENT_GTSC)), -1, 0); | |
1da177e4 | 1517 | } |
d87eb127 | 1518 | } |
d87eb127 SW |
1519 | |
1520 | /* Halt the receive and transmit queues */ | |
1521 | void gfar_halt(struct net_device *dev) | |
1522 | { | |
1523 | struct gfar_private *priv = netdev_priv(dev); | |
46ceb60c | 1524 | struct gfar __iomem *regs = priv->gfargrp[0].regs; |
d87eb127 | 1525 | u32 tempval; |
1da177e4 | 1526 | |
2a54adc3 SW |
1527 | gfar_halt_nodisable(dev); |
1528 | ||
1da177e4 LT |
1529 | /* Disable Rx and Tx */ |
1530 | tempval = gfar_read(®s->maccfg1); | |
1531 | tempval &= ~(MACCFG1_RX_EN | MACCFG1_TX_EN); | |
1532 | gfar_write(®s->maccfg1, tempval); | |
0bbaf069 KG |
1533 | } |
1534 | ||
46ceb60c SG |
1535 | static void free_grp_irqs(struct gfar_priv_grp *grp) |
1536 | { | |
1537 | free_irq(grp->interruptError, grp); | |
1538 | free_irq(grp->interruptTransmit, grp); | |
1539 | free_irq(grp->interruptReceive, grp); | |
1540 | } | |
1541 | ||
0bbaf069 KG |
1542 | void stop_gfar(struct net_device *dev) |
1543 | { | |
1544 | struct gfar_private *priv = netdev_priv(dev); | |
0bbaf069 | 1545 | unsigned long flags; |
46ceb60c | 1546 | int i; |
0bbaf069 | 1547 | |
bb40dcbb AF |
1548 | phy_stop(priv->phydev); |
1549 | ||
a12f801d | 1550 | |
0bbaf069 | 1551 | /* Lock it down */ |
fba4ed03 SG |
1552 | local_irq_save(flags); |
1553 | lock_tx_qs(priv); | |
1554 | lock_rx_qs(priv); | |
0bbaf069 | 1555 | |
0bbaf069 | 1556 | gfar_halt(dev); |
1da177e4 | 1557 | |
fba4ed03 SG |
1558 | unlock_rx_qs(priv); |
1559 | unlock_tx_qs(priv); | |
1560 | local_irq_restore(flags); | |
1da177e4 LT |
1561 | |
1562 | /* Free the IRQs */ | |
b31a1d8b | 1563 | if (priv->device_flags & FSL_GIANFAR_DEV_HAS_MULTI_INTR) { |
46ceb60c SG |
1564 | for (i = 0; i < priv->num_grps; i++) |
1565 | free_grp_irqs(&priv->gfargrp[i]); | |
1da177e4 | 1566 | } else { |
46ceb60c SG |
1567 | for (i = 0; i < priv->num_grps; i++) |
1568 | free_irq(priv->gfargrp[i].interruptTransmit, | |
1569 | &priv->gfargrp[i]); | |
1da177e4 LT |
1570 | } |
1571 | ||
1572 | free_skb_resources(priv); | |
1da177e4 LT |
1573 | } |
1574 | ||
fba4ed03 | 1575 | static void free_skb_tx_queue(struct gfar_priv_tx_q *tx_queue) |
1da177e4 | 1576 | { |
1da177e4 | 1577 | struct txbd8 *txbdp; |
fba4ed03 | 1578 | struct gfar_private *priv = netdev_priv(tx_queue->dev); |
4669bc90 | 1579 | int i, j; |
1da177e4 | 1580 | |
a12f801d | 1581 | txbdp = tx_queue->tx_bd_base; |
1da177e4 | 1582 | |
a12f801d SG |
1583 | for (i = 0; i < tx_queue->tx_ring_size; i++) { |
1584 | if (!tx_queue->tx_skbuff[i]) | |
4669bc90 | 1585 | continue; |
1da177e4 | 1586 | |
4826857f | 1587 | dma_unmap_single(&priv->ofdev->dev, txbdp->bufPtr, |
4669bc90 DH |
1588 | txbdp->length, DMA_TO_DEVICE); |
1589 | txbdp->lstatus = 0; | |
fba4ed03 SG |
1590 | for (j = 0; j < skb_shinfo(tx_queue->tx_skbuff[i])->nr_frags; |
1591 | j++) { | |
4669bc90 | 1592 | txbdp++; |
4826857f | 1593 | dma_unmap_page(&priv->ofdev->dev, txbdp->bufPtr, |
4669bc90 | 1594 | txbdp->length, DMA_TO_DEVICE); |
1da177e4 | 1595 | } |
ad5da7ab | 1596 | txbdp++; |
a12f801d SG |
1597 | dev_kfree_skb_any(tx_queue->tx_skbuff[i]); |
1598 | tx_queue->tx_skbuff[i] = NULL; | |
1da177e4 | 1599 | } |
a12f801d | 1600 | kfree(tx_queue->tx_skbuff); |
fba4ed03 | 1601 | } |
1da177e4 | 1602 | |
fba4ed03 SG |
1603 | static void free_skb_rx_queue(struct gfar_priv_rx_q *rx_queue) |
1604 | { | |
1605 | struct rxbd8 *rxbdp; | |
1606 | struct gfar_private *priv = netdev_priv(rx_queue->dev); | |
1607 | int i; | |
1da177e4 | 1608 | |
fba4ed03 | 1609 | rxbdp = rx_queue->rx_bd_base; |
1da177e4 | 1610 | |
a12f801d SG |
1611 | for (i = 0; i < rx_queue->rx_ring_size; i++) { |
1612 | if (rx_queue->rx_skbuff[i]) { | |
fba4ed03 SG |
1613 | dma_unmap_single(&priv->ofdev->dev, |
1614 | rxbdp->bufPtr, priv->rx_buffer_size, | |
e69edd21 | 1615 | DMA_FROM_DEVICE); |
a12f801d SG |
1616 | dev_kfree_skb_any(rx_queue->rx_skbuff[i]); |
1617 | rx_queue->rx_skbuff[i] = NULL; | |
1da177e4 | 1618 | } |
e69edd21 AV |
1619 | rxbdp->lstatus = 0; |
1620 | rxbdp->bufPtr = 0; | |
1621 | rxbdp++; | |
1da177e4 | 1622 | } |
a12f801d | 1623 | kfree(rx_queue->rx_skbuff); |
fba4ed03 | 1624 | } |
e69edd21 | 1625 | |
fba4ed03 SG |
1626 | /* If there are any tx skbs or rx skbs still around, free them. |
1627 | * Then free tx_skbuff and rx_skbuff */ | |
1628 | static void free_skb_resources(struct gfar_private *priv) | |
1629 | { | |
1630 | struct gfar_priv_tx_q *tx_queue = NULL; | |
1631 | struct gfar_priv_rx_q *rx_queue = NULL; | |
1632 | int i; | |
1633 | ||
1634 | /* Go through all the buffer descriptors and free their data buffers */ | |
1635 | for (i = 0; i < priv->num_tx_queues; i++) { | |
1636 | tx_queue = priv->tx_queue[i]; | |
7c0d10d3 | 1637 | if(tx_queue->tx_skbuff) |
fba4ed03 SG |
1638 | free_skb_tx_queue(tx_queue); |
1639 | } | |
1640 | ||
1641 | for (i = 0; i < priv->num_rx_queues; i++) { | |
1642 | rx_queue = priv->rx_queue[i]; | |
7c0d10d3 | 1643 | if(rx_queue->rx_skbuff) |
fba4ed03 SG |
1644 | free_skb_rx_queue(rx_queue); |
1645 | } | |
1646 | ||
1647 | dma_free_coherent(&priv->ofdev->dev, | |
1648 | sizeof(struct txbd8) * priv->total_tx_ring_size + | |
1649 | sizeof(struct rxbd8) * priv->total_rx_ring_size, | |
1650 | priv->tx_queue[0]->tx_bd_base, | |
1651 | priv->tx_queue[0]->tx_bd_dma_base); | |
1da177e4 LT |
1652 | } |
1653 | ||
0bbaf069 KG |
1654 | void gfar_start(struct net_device *dev) |
1655 | { | |
1656 | struct gfar_private *priv = netdev_priv(dev); | |
46ceb60c | 1657 | struct gfar __iomem *regs = priv->gfargrp[0].regs; |
0bbaf069 | 1658 | u32 tempval; |
46ceb60c | 1659 | int i = 0; |
0bbaf069 KG |
1660 | |
1661 | /* Enable Rx and Tx in MACCFG1 */ | |
1662 | tempval = gfar_read(®s->maccfg1); | |
1663 | tempval |= (MACCFG1_RX_EN | MACCFG1_TX_EN); | |
1664 | gfar_write(®s->maccfg1, tempval); | |
1665 | ||
1666 | /* Initialize DMACTRL to have WWR and WOP */ | |
f4983704 | 1667 | tempval = gfar_read(®s->dmactrl); |
0bbaf069 | 1668 | tempval |= DMACTRL_INIT_SETTINGS; |
f4983704 | 1669 | gfar_write(®s->dmactrl, tempval); |
0bbaf069 | 1670 | |
0bbaf069 | 1671 | /* Make sure we aren't stopped */ |
f4983704 | 1672 | tempval = gfar_read(®s->dmactrl); |
0bbaf069 | 1673 | tempval &= ~(DMACTRL_GRS | DMACTRL_GTS); |
f4983704 | 1674 | gfar_write(®s->dmactrl, tempval); |
0bbaf069 | 1675 | |
46ceb60c SG |
1676 | for (i = 0; i < priv->num_grps; i++) { |
1677 | regs = priv->gfargrp[i].regs; | |
1678 | /* Clear THLT/RHLT, so that the DMA starts polling now */ | |
1679 | gfar_write(®s->tstat, priv->gfargrp[i].tstat); | |
1680 | gfar_write(®s->rstat, priv->gfargrp[i].rstat); | |
1681 | /* Unmask the interrupts we look for */ | |
1682 | gfar_write(®s->imask, IMASK_DEFAULT); | |
1683 | } | |
12dea57b DH |
1684 | |
1685 | dev->trans_start = jiffies; | |
0bbaf069 KG |
1686 | } |
1687 | ||
46ceb60c | 1688 | void gfar_configure_coalescing(struct gfar_private *priv, |
18294ad1 | 1689 | unsigned long tx_mask, unsigned long rx_mask) |
1da177e4 | 1690 | { |
46ceb60c | 1691 | struct gfar __iomem *regs = priv->gfargrp[0].regs; |
18294ad1 | 1692 | u32 __iomem *baddr; |
46ceb60c | 1693 | int i = 0; |
1da177e4 | 1694 | |
46ceb60c SG |
1695 | /* Backward compatible case ---- even if we enable |
1696 | * multiple queues, there's only single reg to program | |
1697 | */ | |
1698 | gfar_write(®s->txic, 0); | |
1699 | if(likely(priv->tx_queue[0]->txcoalescing)) | |
1700 | gfar_write(®s->txic, priv->tx_queue[0]->txic); | |
1da177e4 | 1701 | |
46ceb60c SG |
1702 | gfar_write(®s->rxic, 0); |
1703 | if(unlikely(priv->rx_queue[0]->rxcoalescing)) | |
1704 | gfar_write(®s->rxic, priv->rx_queue[0]->rxic); | |
815b97c6 | 1705 | |
46ceb60c SG |
1706 | if (priv->mode == MQ_MG_MODE) { |
1707 | baddr = ®s->txic0; | |
984b3f57 | 1708 | for_each_set_bit(i, &tx_mask, priv->num_tx_queues) { |
46ceb60c SG |
1709 | if (likely(priv->tx_queue[i]->txcoalescing)) { |
1710 | gfar_write(baddr + i, 0); | |
1711 | gfar_write(baddr + i, priv->tx_queue[i]->txic); | |
1712 | } | |
1713 | } | |
1714 | ||
1715 | baddr = ®s->rxic0; | |
984b3f57 | 1716 | for_each_set_bit(i, &rx_mask, priv->num_rx_queues) { |
46ceb60c SG |
1717 | if (likely(priv->rx_queue[i]->rxcoalescing)) { |
1718 | gfar_write(baddr + i, 0); | |
1719 | gfar_write(baddr + i, priv->rx_queue[i]->rxic); | |
1720 | } | |
1721 | } | |
1722 | } | |
1723 | } | |
1724 | ||
1725 | static int register_grp_irqs(struct gfar_priv_grp *grp) | |
1726 | { | |
1727 | struct gfar_private *priv = grp->priv; | |
1728 | struct net_device *dev = priv->ndev; | |
1729 | int err; | |
1da177e4 | 1730 | |
1da177e4 LT |
1731 | /* If the device has multiple interrupts, register for |
1732 | * them. Otherwise, only register for the one */ | |
b31a1d8b | 1733 | if (priv->device_flags & FSL_GIANFAR_DEV_HAS_MULTI_INTR) { |
0bbaf069 | 1734 | /* Install our interrupt handlers for Error, |
1da177e4 | 1735 | * Transmit, and Receive */ |
46ceb60c SG |
1736 | if ((err = request_irq(grp->interruptError, gfar_error, 0, |
1737 | grp->int_name_er,grp)) < 0) { | |
0bbaf069 | 1738 | if (netif_msg_intr(priv)) |
46ceb60c SG |
1739 | printk(KERN_ERR "%s: Can't get IRQ %d\n", |
1740 | dev->name, grp->interruptError); | |
1741 | ||
1742 | goto err_irq_fail; | |
1da177e4 LT |
1743 | } |
1744 | ||
46ceb60c SG |
1745 | if ((err = request_irq(grp->interruptTransmit, gfar_transmit, |
1746 | 0, grp->int_name_tx, grp)) < 0) { | |
0bbaf069 | 1747 | if (netif_msg_intr(priv)) |
46ceb60c SG |
1748 | printk(KERN_ERR "%s: Can't get IRQ %d\n", |
1749 | dev->name, grp->interruptTransmit); | |
1da177e4 LT |
1750 | goto tx_irq_fail; |
1751 | } | |
1752 | ||
46ceb60c SG |
1753 | if ((err = request_irq(grp->interruptReceive, gfar_receive, 0, |
1754 | grp->int_name_rx, grp)) < 0) { | |
0bbaf069 | 1755 | if (netif_msg_intr(priv)) |
46ceb60c SG |
1756 | printk(KERN_ERR "%s: Can't get IRQ %d\n", |
1757 | dev->name, grp->interruptReceive); | |
1da177e4 LT |
1758 | goto rx_irq_fail; |
1759 | } | |
1760 | } else { | |
46ceb60c SG |
1761 | if ((err = request_irq(grp->interruptTransmit, gfar_interrupt, 0, |
1762 | grp->int_name_tx, grp)) < 0) { | |
0bbaf069 | 1763 | if (netif_msg_intr(priv)) |
46ceb60c SG |
1764 | printk(KERN_ERR "%s: Can't get IRQ %d\n", |
1765 | dev->name, grp->interruptTransmit); | |
1da177e4 LT |
1766 | goto err_irq_fail; |
1767 | } | |
1768 | } | |
1769 | ||
46ceb60c SG |
1770 | return 0; |
1771 | ||
1772 | rx_irq_fail: | |
1773 | free_irq(grp->interruptTransmit, grp); | |
1774 | tx_irq_fail: | |
1775 | free_irq(grp->interruptError, grp); | |
1776 | err_irq_fail: | |
1777 | return err; | |
1778 | ||
1779 | } | |
1780 | ||
1781 | /* Bring the controller up and running */ | |
1782 | int startup_gfar(struct net_device *ndev) | |
1783 | { | |
1784 | struct gfar_private *priv = netdev_priv(ndev); | |
1785 | struct gfar __iomem *regs = NULL; | |
1786 | int err, i, j; | |
1787 | ||
1788 | for (i = 0; i < priv->num_grps; i++) { | |
1789 | regs= priv->gfargrp[i].regs; | |
1790 | gfar_write(®s->imask, IMASK_INIT_CLEAR); | |
1791 | } | |
1792 | ||
1793 | regs= priv->gfargrp[0].regs; | |
1794 | err = gfar_alloc_skb_resources(ndev); | |
1795 | if (err) | |
1796 | return err; | |
1797 | ||
1798 | gfar_init_mac(ndev); | |
1799 | ||
1800 | for (i = 0; i < priv->num_grps; i++) { | |
1801 | err = register_grp_irqs(&priv->gfargrp[i]); | |
1802 | if (err) { | |
1803 | for (j = 0; j < i; j++) | |
1804 | free_grp_irqs(&priv->gfargrp[j]); | |
1805 | goto irq_fail; | |
1806 | } | |
1807 | } | |
1808 | ||
7f7f5316 | 1809 | /* Start the controller */ |
ccc05c6e | 1810 | gfar_start(ndev); |
1da177e4 | 1811 | |
826aa4a0 AV |
1812 | phy_start(priv->phydev); |
1813 | ||
46ceb60c SG |
1814 | gfar_configure_coalescing(priv, 0xFF, 0xFF); |
1815 | ||
1da177e4 LT |
1816 | return 0; |
1817 | ||
46ceb60c | 1818 | irq_fail: |
e69edd21 | 1819 | free_skb_resources(priv); |
1da177e4 LT |
1820 | return err; |
1821 | } | |
1822 | ||
1823 | /* Called when something needs to use the ethernet device */ | |
1824 | /* Returns 0 for success. */ | |
1825 | static int gfar_enet_open(struct net_device *dev) | |
1826 | { | |
94e8cc35 | 1827 | struct gfar_private *priv = netdev_priv(dev); |
1da177e4 LT |
1828 | int err; |
1829 | ||
46ceb60c | 1830 | enable_napi(priv); |
bea3348e | 1831 | |
0fd56bb5 AF |
1832 | skb_queue_head_init(&priv->rx_recycle); |
1833 | ||
1da177e4 LT |
1834 | /* Initialize a bunch of registers */ |
1835 | init_registers(dev); | |
1836 | ||
1837 | gfar_set_mac_address(dev); | |
1838 | ||
1839 | err = init_phy(dev); | |
1840 | ||
a12f801d | 1841 | if (err) { |
46ceb60c | 1842 | disable_napi(priv); |
1da177e4 | 1843 | return err; |
bea3348e | 1844 | } |
1da177e4 LT |
1845 | |
1846 | err = startup_gfar(dev); | |
db0e8e3f | 1847 | if (err) { |
46ceb60c | 1848 | disable_napi(priv); |
db0e8e3f AV |
1849 | return err; |
1850 | } | |
1da177e4 | 1851 | |
fba4ed03 | 1852 | netif_tx_start_all_queues(dev); |
1da177e4 | 1853 | |
2884e5cc AV |
1854 | device_set_wakeup_enable(&dev->dev, priv->wol_en); |
1855 | ||
1da177e4 LT |
1856 | return err; |
1857 | } | |
1858 | ||
54dc79fe | 1859 | static inline struct txfcb *gfar_add_fcb(struct sk_buff *skb) |
0bbaf069 | 1860 | { |
54dc79fe | 1861 | struct txfcb *fcb = (struct txfcb *)skb_push(skb, GMAC_FCB_LEN); |
6c31d55f KG |
1862 | |
1863 | memset(fcb, 0, GMAC_FCB_LEN); | |
0bbaf069 | 1864 | |
0bbaf069 KG |
1865 | return fcb; |
1866 | } | |
1867 | ||
1868 | static inline void gfar_tx_checksum(struct sk_buff *skb, struct txfcb *fcb) | |
1869 | { | |
7f7f5316 | 1870 | u8 flags = 0; |
0bbaf069 KG |
1871 | |
1872 | /* If we're here, it's a IP packet with a TCP or UDP | |
1873 | * payload. We set it to checksum, using a pseudo-header | |
1874 | * we provide | |
1875 | */ | |
7f7f5316 | 1876 | flags = TXFCB_DEFAULT; |
0bbaf069 | 1877 | |
7f7f5316 AF |
1878 | /* Tell the controller what the protocol is */ |
1879 | /* And provide the already calculated phcs */ | |
eddc9ec5 | 1880 | if (ip_hdr(skb)->protocol == IPPROTO_UDP) { |
7f7f5316 | 1881 | flags |= TXFCB_UDP; |
4bedb452 | 1882 | fcb->phcs = udp_hdr(skb)->check; |
7f7f5316 | 1883 | } else |
8da32de5 | 1884 | fcb->phcs = tcp_hdr(skb)->check; |
0bbaf069 KG |
1885 | |
1886 | /* l3os is the distance between the start of the | |
1887 | * frame (skb->data) and the start of the IP hdr. | |
1888 | * l4os is the distance between the start of the | |
1889 | * l3 hdr and the l4 hdr */ | |
bbe735e4 | 1890 | fcb->l3os = (u16)(skb_network_offset(skb) - GMAC_FCB_LEN); |
cfe1fc77 | 1891 | fcb->l4os = skb_network_header_len(skb); |
0bbaf069 | 1892 | |
7f7f5316 | 1893 | fcb->flags = flags; |
0bbaf069 KG |
1894 | } |
1895 | ||
7f7f5316 | 1896 | void inline gfar_tx_vlan(struct sk_buff *skb, struct txfcb *fcb) |
0bbaf069 | 1897 | { |
7f7f5316 | 1898 | fcb->flags |= TXFCB_VLN; |
0bbaf069 KG |
1899 | fcb->vlctl = vlan_tx_tag_get(skb); |
1900 | } | |
1901 | ||
4669bc90 DH |
1902 | static inline struct txbd8 *skip_txbd(struct txbd8 *bdp, int stride, |
1903 | struct txbd8 *base, int ring_size) | |
1904 | { | |
1905 | struct txbd8 *new_bd = bdp + stride; | |
1906 | ||
1907 | return (new_bd >= (base + ring_size)) ? (new_bd - ring_size) : new_bd; | |
1908 | } | |
1909 | ||
1910 | static inline struct txbd8 *next_txbd(struct txbd8 *bdp, struct txbd8 *base, | |
1911 | int ring_size) | |
1912 | { | |
1913 | return skip_txbd(bdp, 1, base, ring_size); | |
1914 | } | |
1915 | ||
1da177e4 LT |
1916 | /* This is called by the kernel when a frame is ready for transmission. */ |
1917 | /* It is pointed to by the dev->hard_start_xmit function pointer */ | |
1918 | static int gfar_start_xmit(struct sk_buff *skb, struct net_device *dev) | |
1919 | { | |
1920 | struct gfar_private *priv = netdev_priv(dev); | |
a12f801d | 1921 | struct gfar_priv_tx_q *tx_queue = NULL; |
fba4ed03 | 1922 | struct netdev_queue *txq; |
f4983704 | 1923 | struct gfar __iomem *regs = NULL; |
0bbaf069 | 1924 | struct txfcb *fcb = NULL; |
4669bc90 | 1925 | struct txbd8 *txbdp, *txbdp_start, *base; |
5a5efed4 | 1926 | u32 lstatus; |
fba4ed03 | 1927 | int i, rq = 0; |
4669bc90 | 1928 | u32 bufaddr; |
fef6108d | 1929 | unsigned long flags; |
4669bc90 DH |
1930 | unsigned int nr_frags, length; |
1931 | ||
fba4ed03 SG |
1932 | |
1933 | rq = skb->queue_mapping; | |
1934 | tx_queue = priv->tx_queue[rq]; | |
1935 | txq = netdev_get_tx_queue(dev, rq); | |
a12f801d | 1936 | base = tx_queue->tx_bd_base; |
46ceb60c | 1937 | regs = tx_queue->grp->regs; |
4669bc90 | 1938 | |
5b28beaf LY |
1939 | /* make space for additional header when fcb is needed */ |
1940 | if (((skb->ip_summed == CHECKSUM_PARTIAL) || | |
1941 | (priv->vlgrp && vlan_tx_tag_present(skb))) && | |
1942 | (skb_headroom(skb) < GMAC_FCB_LEN)) { | |
54dc79fe SH |
1943 | struct sk_buff *skb_new; |
1944 | ||
1945 | skb_new = skb_realloc_headroom(skb, GMAC_FCB_LEN); | |
1946 | if (!skb_new) { | |
1947 | dev->stats.tx_errors++; | |
bd14ba84 | 1948 | kfree_skb(skb); |
54dc79fe SH |
1949 | return NETDEV_TX_OK; |
1950 | } | |
1951 | kfree_skb(skb); | |
1952 | skb = skb_new; | |
1953 | } | |
1954 | ||
4669bc90 DH |
1955 | /* total number of fragments in the SKB */ |
1956 | nr_frags = skb_shinfo(skb)->nr_frags; | |
1957 | ||
4669bc90 | 1958 | /* check if there is space to queue this packet */ |
a12f801d | 1959 | if ((nr_frags+1) > tx_queue->num_txbdfree) { |
4669bc90 | 1960 | /* no space, stop the queue */ |
fba4ed03 | 1961 | netif_tx_stop_queue(txq); |
4669bc90 | 1962 | dev->stats.tx_fifo_errors++; |
4669bc90 DH |
1963 | return NETDEV_TX_BUSY; |
1964 | } | |
1da177e4 LT |
1965 | |
1966 | /* Update transmit stats */ | |
a7f38041 SG |
1967 | txq->tx_bytes += skb->len; |
1968 | txq->tx_packets ++; | |
1da177e4 | 1969 | |
a12f801d | 1970 | txbdp = txbdp_start = tx_queue->cur_tx; |
1da177e4 | 1971 | |
4669bc90 DH |
1972 | if (nr_frags == 0) { |
1973 | lstatus = txbdp->lstatus | BD_LFLAG(TXBD_LAST | TXBD_INTERRUPT); | |
1974 | } else { | |
1975 | /* Place the fragment addresses and lengths into the TxBDs */ | |
1976 | for (i = 0; i < nr_frags; i++) { | |
1977 | /* Point at the next BD, wrapping as needed */ | |
a12f801d | 1978 | txbdp = next_txbd(txbdp, base, tx_queue->tx_ring_size); |
4669bc90 DH |
1979 | |
1980 | length = skb_shinfo(skb)->frags[i].size; | |
1981 | ||
1982 | lstatus = txbdp->lstatus | length | | |
1983 | BD_LFLAG(TXBD_READY); | |
1984 | ||
1985 | /* Handle the last BD specially */ | |
1986 | if (i == nr_frags - 1) | |
1987 | lstatus |= BD_LFLAG(TXBD_LAST | TXBD_INTERRUPT); | |
1da177e4 | 1988 | |
4826857f | 1989 | bufaddr = dma_map_page(&priv->ofdev->dev, |
4669bc90 DH |
1990 | skb_shinfo(skb)->frags[i].page, |
1991 | skb_shinfo(skb)->frags[i].page_offset, | |
1992 | length, | |
1993 | DMA_TO_DEVICE); | |
1994 | ||
1995 | /* set the TxBD length and buffer pointer */ | |
1996 | txbdp->bufPtr = bufaddr; | |
1997 | txbdp->lstatus = lstatus; | |
1998 | } | |
1999 | ||
2000 | lstatus = txbdp_start->lstatus; | |
2001 | } | |
1da177e4 | 2002 | |
0bbaf069 | 2003 | /* Set up checksumming */ |
12dea57b | 2004 | if (CHECKSUM_PARTIAL == skb->ip_summed) { |
54dc79fe SH |
2005 | fcb = gfar_add_fcb(skb); |
2006 | lstatus |= BD_LFLAG(TXBD_TOE); | |
2007 | gfar_tx_checksum(skb, fcb); | |
0bbaf069 KG |
2008 | } |
2009 | ||
77ecaf2d | 2010 | if (priv->vlgrp && vlan_tx_tag_present(skb)) { |
54dc79fe SH |
2011 | if (unlikely(NULL == fcb)) { |
2012 | fcb = gfar_add_fcb(skb); | |
5a5efed4 | 2013 | lstatus |= BD_LFLAG(TXBD_TOE); |
7f7f5316 | 2014 | } |
54dc79fe SH |
2015 | |
2016 | gfar_tx_vlan(skb, fcb); | |
0bbaf069 KG |
2017 | } |
2018 | ||
4669bc90 | 2019 | /* setup the TxBD length and buffer pointer for the first BD */ |
4826857f | 2020 | txbdp_start->bufPtr = dma_map_single(&priv->ofdev->dev, skb->data, |
4669bc90 | 2021 | skb_headlen(skb), DMA_TO_DEVICE); |
1da177e4 | 2022 | |
4669bc90 | 2023 | lstatus |= BD_LFLAG(TXBD_CRC | TXBD_READY) | skb_headlen(skb); |
1da177e4 | 2024 | |
a3bc1f11 AV |
2025 | /* |
2026 | * We can work in parallel with gfar_clean_tx_ring(), except | |
2027 | * when modifying num_txbdfree. Note that we didn't grab the lock | |
2028 | * when we were reading the num_txbdfree and checking for available | |
2029 | * space, that's because outside of this function it can only grow, | |
2030 | * and once we've got needed space, it cannot suddenly disappear. | |
2031 | * | |
2032 | * The lock also protects us from gfar_error(), which can modify | |
2033 | * regs->tstat and thus retrigger the transfers, which is why we | |
2034 | * also must grab the lock before setting ready bit for the first | |
2035 | * to be transmitted BD. | |
2036 | */ | |
2037 | spin_lock_irqsave(&tx_queue->txlock, flags); | |
2038 | ||
4669bc90 DH |
2039 | /* |
2040 | * The powerpc-specific eieio() is used, as wmb() has too strong | |
3b6330ce SW |
2041 | * semantics (it requires synchronization between cacheable and |
2042 | * uncacheable mappings, which eieio doesn't provide and which we | |
2043 | * don't need), thus requiring a more expensive sync instruction. At | |
2044 | * some point, the set of architecture-independent barrier functions | |
2045 | * should be expanded to include weaker barriers. | |
2046 | */ | |
3b6330ce | 2047 | eieio(); |
7f7f5316 | 2048 | |
4669bc90 DH |
2049 | txbdp_start->lstatus = lstatus; |
2050 | ||
0eddba52 AV |
2051 | eieio(); /* force lstatus write before tx_skbuff */ |
2052 | ||
2053 | tx_queue->tx_skbuff[tx_queue->skb_curtx] = skb; | |
2054 | ||
4669bc90 DH |
2055 | /* Update the current skb pointer to the next entry we will use |
2056 | * (wrapping if necessary) */ | |
a12f801d SG |
2057 | tx_queue->skb_curtx = (tx_queue->skb_curtx + 1) & |
2058 | TX_RING_MOD_MASK(tx_queue->tx_ring_size); | |
4669bc90 | 2059 | |
a12f801d | 2060 | tx_queue->cur_tx = next_txbd(txbdp, base, tx_queue->tx_ring_size); |
4669bc90 DH |
2061 | |
2062 | /* reduce TxBD free count */ | |
a12f801d | 2063 | tx_queue->num_txbdfree -= (nr_frags + 1); |
4669bc90 DH |
2064 | |
2065 | dev->trans_start = jiffies; | |
1da177e4 LT |
2066 | |
2067 | /* If the next BD still needs to be cleaned up, then the bds | |
2068 | are full. We need to tell the kernel to stop sending us stuff. */ | |
a12f801d | 2069 | if (!tx_queue->num_txbdfree) { |
fba4ed03 | 2070 | netif_tx_stop_queue(txq); |
1da177e4 | 2071 | |
09f75cd7 | 2072 | dev->stats.tx_fifo_errors++; |
1da177e4 LT |
2073 | } |
2074 | ||
1da177e4 | 2075 | /* Tell the DMA to go go go */ |
fba4ed03 | 2076 | gfar_write(®s->tstat, TSTAT_CLEAR_THALT >> tx_queue->qindex); |
1da177e4 LT |
2077 | |
2078 | /* Unlock priv */ | |
a12f801d | 2079 | spin_unlock_irqrestore(&tx_queue->txlock, flags); |
1da177e4 | 2080 | |
54dc79fe | 2081 | return NETDEV_TX_OK; |
1da177e4 LT |
2082 | } |
2083 | ||
2084 | /* Stops the kernel queue, and halts the controller */ | |
2085 | static int gfar_close(struct net_device *dev) | |
2086 | { | |
2087 | struct gfar_private *priv = netdev_priv(dev); | |
bea3348e | 2088 | |
46ceb60c | 2089 | disable_napi(priv); |
bea3348e | 2090 | |
0fd56bb5 | 2091 | skb_queue_purge(&priv->rx_recycle); |
ab939905 | 2092 | cancel_work_sync(&priv->reset_task); |
1da177e4 LT |
2093 | stop_gfar(dev); |
2094 | ||
bb40dcbb AF |
2095 | /* Disconnect from the PHY */ |
2096 | phy_disconnect(priv->phydev); | |
2097 | priv->phydev = NULL; | |
1da177e4 | 2098 | |
fba4ed03 | 2099 | netif_tx_stop_all_queues(dev); |
1da177e4 LT |
2100 | |
2101 | return 0; | |
2102 | } | |
2103 | ||
1da177e4 | 2104 | /* Changes the mac address if the controller is not running. */ |
f162b9d5 | 2105 | static int gfar_set_mac_address(struct net_device *dev) |
1da177e4 | 2106 | { |
7f7f5316 | 2107 | gfar_set_mac_for_addr(dev, 0, dev->dev_addr); |
1da177e4 LT |
2108 | |
2109 | return 0; | |
2110 | } | |
2111 | ||
2112 | ||
0bbaf069 KG |
2113 | /* Enables and disables VLAN insertion/extraction */ |
2114 | static void gfar_vlan_rx_register(struct net_device *dev, | |
2115 | struct vlan_group *grp) | |
2116 | { | |
2117 | struct gfar_private *priv = netdev_priv(dev); | |
f4983704 | 2118 | struct gfar __iomem *regs = NULL; |
0bbaf069 KG |
2119 | unsigned long flags; |
2120 | u32 tempval; | |
2121 | ||
46ceb60c | 2122 | regs = priv->gfargrp[0].regs; |
fba4ed03 SG |
2123 | local_irq_save(flags); |
2124 | lock_rx_qs(priv); | |
0bbaf069 | 2125 | |
cd1f55a5 | 2126 | priv->vlgrp = grp; |
0bbaf069 KG |
2127 | |
2128 | if (grp) { | |
2129 | /* Enable VLAN tag insertion */ | |
f4983704 | 2130 | tempval = gfar_read(®s->tctrl); |
0bbaf069 KG |
2131 | tempval |= TCTRL_VLINS; |
2132 | ||
f4983704 | 2133 | gfar_write(®s->tctrl, tempval); |
6aa20a22 | 2134 | |
0bbaf069 | 2135 | /* Enable VLAN tag extraction */ |
f4983704 | 2136 | tempval = gfar_read(®s->rctrl); |
77ecaf2d | 2137 | tempval |= (RCTRL_VLEX | RCTRL_PRSDEP_INIT); |
f4983704 | 2138 | gfar_write(®s->rctrl, tempval); |
0bbaf069 KG |
2139 | } else { |
2140 | /* Disable VLAN tag insertion */ | |
f4983704 | 2141 | tempval = gfar_read(®s->tctrl); |
0bbaf069 | 2142 | tempval &= ~TCTRL_VLINS; |
f4983704 | 2143 | gfar_write(®s->tctrl, tempval); |
0bbaf069 KG |
2144 | |
2145 | /* Disable VLAN tag extraction */ | |
f4983704 | 2146 | tempval = gfar_read(®s->rctrl); |
0bbaf069 | 2147 | tempval &= ~RCTRL_VLEX; |
77ecaf2d DH |
2148 | /* If parse is no longer required, then disable parser */ |
2149 | if (tempval & RCTRL_REQ_PARSER) | |
2150 | tempval |= RCTRL_PRSDEP_INIT; | |
2151 | else | |
2152 | tempval &= ~RCTRL_PRSDEP_INIT; | |
f4983704 | 2153 | gfar_write(®s->rctrl, tempval); |
0bbaf069 KG |
2154 | } |
2155 | ||
77ecaf2d DH |
2156 | gfar_change_mtu(dev, dev->mtu); |
2157 | ||
fba4ed03 SG |
2158 | unlock_rx_qs(priv); |
2159 | local_irq_restore(flags); | |
0bbaf069 KG |
2160 | } |
2161 | ||
1da177e4 LT |
2162 | static int gfar_change_mtu(struct net_device *dev, int new_mtu) |
2163 | { | |
2164 | int tempsize, tempval; | |
2165 | struct gfar_private *priv = netdev_priv(dev); | |
46ceb60c | 2166 | struct gfar __iomem *regs = priv->gfargrp[0].regs; |
1da177e4 | 2167 | int oldsize = priv->rx_buffer_size; |
0bbaf069 KG |
2168 | int frame_size = new_mtu + ETH_HLEN; |
2169 | ||
77ecaf2d | 2170 | if (priv->vlgrp) |
faa89577 | 2171 | frame_size += VLAN_HLEN; |
0bbaf069 | 2172 | |
1da177e4 | 2173 | if ((frame_size < 64) || (frame_size > JUMBO_FRAME_SIZE)) { |
0bbaf069 KG |
2174 | if (netif_msg_drv(priv)) |
2175 | printk(KERN_ERR "%s: Invalid MTU setting\n", | |
2176 | dev->name); | |
1da177e4 LT |
2177 | return -EINVAL; |
2178 | } | |
2179 | ||
77ecaf2d DH |
2180 | if (gfar_uses_fcb(priv)) |
2181 | frame_size += GMAC_FCB_LEN; | |
2182 | ||
2183 | frame_size += priv->padding; | |
2184 | ||
1da177e4 LT |
2185 | tempsize = |
2186 | (frame_size & ~(INCREMENTAL_BUFFER_SIZE - 1)) + | |
2187 | INCREMENTAL_BUFFER_SIZE; | |
2188 | ||
2189 | /* Only stop and start the controller if it isn't already | |
7f7f5316 | 2190 | * stopped, and we changed something */ |
1da177e4 LT |
2191 | if ((oldsize != tempsize) && (dev->flags & IFF_UP)) |
2192 | stop_gfar(dev); | |
2193 | ||
2194 | priv->rx_buffer_size = tempsize; | |
2195 | ||
2196 | dev->mtu = new_mtu; | |
2197 | ||
f4983704 SG |
2198 | gfar_write(®s->mrblr, priv->rx_buffer_size); |
2199 | gfar_write(®s->maxfrm, priv->rx_buffer_size); | |
1da177e4 LT |
2200 | |
2201 | /* If the mtu is larger than the max size for standard | |
2202 | * ethernet frames (ie, a jumbo frame), then set maccfg2 | |
2203 | * to allow huge frames, and to check the length */ | |
f4983704 | 2204 | tempval = gfar_read(®s->maccfg2); |
1da177e4 LT |
2205 | |
2206 | if (priv->rx_buffer_size > DEFAULT_RX_BUFFER_SIZE) | |
2207 | tempval |= (MACCFG2_HUGEFRAME | MACCFG2_LENGTHCHECK); | |
2208 | else | |
2209 | tempval &= ~(MACCFG2_HUGEFRAME | MACCFG2_LENGTHCHECK); | |
2210 | ||
f4983704 | 2211 | gfar_write(®s->maccfg2, tempval); |
1da177e4 LT |
2212 | |
2213 | if ((oldsize != tempsize) && (dev->flags & IFF_UP)) | |
2214 | startup_gfar(dev); | |
2215 | ||
2216 | return 0; | |
2217 | } | |
2218 | ||
ab939905 | 2219 | /* gfar_reset_task gets scheduled when a packet has not been |
1da177e4 LT |
2220 | * transmitted after a set amount of time. |
2221 | * For now, assume that clearing out all the structures, and | |
ab939905 SS |
2222 | * starting over will fix the problem. |
2223 | */ | |
2224 | static void gfar_reset_task(struct work_struct *work) | |
1da177e4 | 2225 | { |
ab939905 SS |
2226 | struct gfar_private *priv = container_of(work, struct gfar_private, |
2227 | reset_task); | |
4826857f | 2228 | struct net_device *dev = priv->ndev; |
1da177e4 LT |
2229 | |
2230 | if (dev->flags & IFF_UP) { | |
fba4ed03 | 2231 | netif_tx_stop_all_queues(dev); |
1da177e4 LT |
2232 | stop_gfar(dev); |
2233 | startup_gfar(dev); | |
fba4ed03 | 2234 | netif_tx_start_all_queues(dev); |
1da177e4 LT |
2235 | } |
2236 | ||
263ba320 | 2237 | netif_tx_schedule_all(dev); |
1da177e4 LT |
2238 | } |
2239 | ||
ab939905 SS |
2240 | static void gfar_timeout(struct net_device *dev) |
2241 | { | |
2242 | struct gfar_private *priv = netdev_priv(dev); | |
2243 | ||
2244 | dev->stats.tx_errors++; | |
2245 | schedule_work(&priv->reset_task); | |
2246 | } | |
2247 | ||
1da177e4 | 2248 | /* Interrupt Handler for Transmit complete */ |
a12f801d | 2249 | static int gfar_clean_tx_ring(struct gfar_priv_tx_q *tx_queue) |
1da177e4 | 2250 | { |
a12f801d | 2251 | struct net_device *dev = tx_queue->dev; |
d080cd63 | 2252 | struct gfar_private *priv = netdev_priv(dev); |
a12f801d | 2253 | struct gfar_priv_rx_q *rx_queue = NULL; |
4669bc90 DH |
2254 | struct txbd8 *bdp; |
2255 | struct txbd8 *lbdp = NULL; | |
a12f801d | 2256 | struct txbd8 *base = tx_queue->tx_bd_base; |
4669bc90 DH |
2257 | struct sk_buff *skb; |
2258 | int skb_dirtytx; | |
a12f801d | 2259 | int tx_ring_size = tx_queue->tx_ring_size; |
4669bc90 DH |
2260 | int frags = 0; |
2261 | int i; | |
d080cd63 | 2262 | int howmany = 0; |
4669bc90 | 2263 | u32 lstatus; |
1da177e4 | 2264 | |
fba4ed03 | 2265 | rx_queue = priv->rx_queue[tx_queue->qindex]; |
a12f801d SG |
2266 | bdp = tx_queue->dirty_tx; |
2267 | skb_dirtytx = tx_queue->skb_dirtytx; | |
1da177e4 | 2268 | |
a12f801d | 2269 | while ((skb = tx_queue->tx_skbuff[skb_dirtytx])) { |
a3bc1f11 AV |
2270 | unsigned long flags; |
2271 | ||
4669bc90 DH |
2272 | frags = skb_shinfo(skb)->nr_frags; |
2273 | lbdp = skip_txbd(bdp, frags, base, tx_ring_size); | |
1da177e4 | 2274 | |
4669bc90 | 2275 | lstatus = lbdp->lstatus; |
1da177e4 | 2276 | |
4669bc90 DH |
2277 | /* Only clean completed frames */ |
2278 | if ((lstatus & BD_LFLAG(TXBD_READY)) && | |
2279 | (lstatus & BD_LENGTH_MASK)) | |
2280 | break; | |
2281 | ||
4826857f | 2282 | dma_unmap_single(&priv->ofdev->dev, |
4669bc90 DH |
2283 | bdp->bufPtr, |
2284 | bdp->length, | |
2285 | DMA_TO_DEVICE); | |
81183059 | 2286 | |
4669bc90 DH |
2287 | bdp->lstatus &= BD_LFLAG(TXBD_WRAP); |
2288 | bdp = next_txbd(bdp, base, tx_ring_size); | |
d080cd63 | 2289 | |
4669bc90 | 2290 | for (i = 0; i < frags; i++) { |
4826857f | 2291 | dma_unmap_page(&priv->ofdev->dev, |
4669bc90 DH |
2292 | bdp->bufPtr, |
2293 | bdp->length, | |
2294 | DMA_TO_DEVICE); | |
2295 | bdp->lstatus &= BD_LFLAG(TXBD_WRAP); | |
2296 | bdp = next_txbd(bdp, base, tx_ring_size); | |
2297 | } | |
1da177e4 | 2298 | |
0fd56bb5 AF |
2299 | /* |
2300 | * If there's room in the queue (limit it to rx_buffer_size) | |
2301 | * we add this skb back into the pool, if it's the right size | |
2302 | */ | |
a12f801d | 2303 | if (skb_queue_len(&priv->rx_recycle) < rx_queue->rx_ring_size && |
0fd56bb5 AF |
2304 | skb_recycle_check(skb, priv->rx_buffer_size + |
2305 | RXBUF_ALIGNMENT)) | |
2306 | __skb_queue_head(&priv->rx_recycle, skb); | |
2307 | else | |
2308 | dev_kfree_skb_any(skb); | |
2309 | ||
a12f801d | 2310 | tx_queue->tx_skbuff[skb_dirtytx] = NULL; |
d080cd63 | 2311 | |
4669bc90 DH |
2312 | skb_dirtytx = (skb_dirtytx + 1) & |
2313 | TX_RING_MOD_MASK(tx_ring_size); | |
2314 | ||
2315 | howmany++; | |
a3bc1f11 | 2316 | spin_lock_irqsave(&tx_queue->txlock, flags); |
a12f801d | 2317 | tx_queue->num_txbdfree += frags + 1; |
a3bc1f11 | 2318 | spin_unlock_irqrestore(&tx_queue->txlock, flags); |
4669bc90 | 2319 | } |
1da177e4 | 2320 | |
4669bc90 | 2321 | /* If we freed a buffer, we can restart transmission, if necessary */ |
fba4ed03 SG |
2322 | if (__netif_subqueue_stopped(dev, tx_queue->qindex) && tx_queue->num_txbdfree) |
2323 | netif_wake_subqueue(dev, tx_queue->qindex); | |
1da177e4 | 2324 | |
4669bc90 | 2325 | /* Update dirty indicators */ |
a12f801d SG |
2326 | tx_queue->skb_dirtytx = skb_dirtytx; |
2327 | tx_queue->dirty_tx = bdp; | |
1da177e4 | 2328 | |
d080cd63 DH |
2329 | return howmany; |
2330 | } | |
2331 | ||
f4983704 | 2332 | static void gfar_schedule_cleanup(struct gfar_priv_grp *gfargrp) |
d080cd63 | 2333 | { |
a6d0b91a AV |
2334 | unsigned long flags; |
2335 | ||
fba4ed03 SG |
2336 | spin_lock_irqsave(&gfargrp->grplock, flags); |
2337 | if (napi_schedule_prep(&gfargrp->napi)) { | |
f4983704 | 2338 | gfar_write(&gfargrp->regs->imask, IMASK_RTX_DISABLED); |
fba4ed03 | 2339 | __napi_schedule(&gfargrp->napi); |
8707bdd4 JP |
2340 | } else { |
2341 | /* | |
2342 | * Clear IEVENT, so interrupts aren't called again | |
2343 | * because of the packets that have already arrived. | |
2344 | */ | |
f4983704 | 2345 | gfar_write(&gfargrp->regs->ievent, IEVENT_RTX_MASK); |
2f448911 | 2346 | } |
fba4ed03 | 2347 | spin_unlock_irqrestore(&gfargrp->grplock, flags); |
a6d0b91a | 2348 | |
8c7396ae | 2349 | } |
1da177e4 | 2350 | |
8c7396ae | 2351 | /* Interrupt Handler for Transmit complete */ |
f4983704 | 2352 | static irqreturn_t gfar_transmit(int irq, void *grp_id) |
8c7396ae | 2353 | { |
f4983704 | 2354 | gfar_schedule_cleanup((struct gfar_priv_grp *)grp_id); |
1da177e4 LT |
2355 | return IRQ_HANDLED; |
2356 | } | |
2357 | ||
a12f801d | 2358 | static void gfar_new_rxbdp(struct gfar_priv_rx_q *rx_queue, struct rxbd8 *bdp, |
815b97c6 AF |
2359 | struct sk_buff *skb) |
2360 | { | |
a12f801d | 2361 | struct net_device *dev = rx_queue->dev; |
815b97c6 | 2362 | struct gfar_private *priv = netdev_priv(dev); |
8a102fe0 | 2363 | dma_addr_t buf; |
815b97c6 | 2364 | |
8a102fe0 AV |
2365 | buf = dma_map_single(&priv->ofdev->dev, skb->data, |
2366 | priv->rx_buffer_size, DMA_FROM_DEVICE); | |
a12f801d | 2367 | gfar_init_rxbdp(rx_queue, bdp, buf); |
815b97c6 AF |
2368 | } |
2369 | ||
2370 | ||
2371 | struct sk_buff * gfar_new_skb(struct net_device *dev) | |
1da177e4 | 2372 | { |
7f7f5316 | 2373 | unsigned int alignamount; |
1da177e4 LT |
2374 | struct gfar_private *priv = netdev_priv(dev); |
2375 | struct sk_buff *skb = NULL; | |
1da177e4 | 2376 | |
0fd56bb5 AF |
2377 | skb = __skb_dequeue(&priv->rx_recycle); |
2378 | if (!skb) | |
2379 | skb = netdev_alloc_skb(dev, | |
2380 | priv->rx_buffer_size + RXBUF_ALIGNMENT); | |
1da177e4 | 2381 | |
815b97c6 | 2382 | if (!skb) |
1da177e4 LT |
2383 | return NULL; |
2384 | ||
7f7f5316 | 2385 | alignamount = RXBUF_ALIGNMENT - |
bea3348e | 2386 | (((unsigned long) skb->data) & (RXBUF_ALIGNMENT - 1)); |
7f7f5316 | 2387 | |
1da177e4 LT |
2388 | /* We need the data buffer to be aligned properly. We will reserve |
2389 | * as many bytes as needed to align the data properly | |
2390 | */ | |
7f7f5316 | 2391 | skb_reserve(skb, alignamount); |
a6d36d56 | 2392 | GFAR_CB(skb)->alignamount = alignamount; |
1da177e4 | 2393 | |
1da177e4 LT |
2394 | return skb; |
2395 | } | |
2396 | ||
298e1a9e | 2397 | static inline void count_errors(unsigned short status, struct net_device *dev) |
1da177e4 | 2398 | { |
298e1a9e | 2399 | struct gfar_private *priv = netdev_priv(dev); |
09f75cd7 | 2400 | struct net_device_stats *stats = &dev->stats; |
1da177e4 LT |
2401 | struct gfar_extra_stats *estats = &priv->extra_stats; |
2402 | ||
2403 | /* If the packet was truncated, none of the other errors | |
2404 | * matter */ | |
2405 | if (status & RXBD_TRUNCATED) { | |
2406 | stats->rx_length_errors++; | |
2407 | ||
2408 | estats->rx_trunc++; | |
2409 | ||
2410 | return; | |
2411 | } | |
2412 | /* Count the errors, if there were any */ | |
2413 | if (status & (RXBD_LARGE | RXBD_SHORT)) { | |
2414 | stats->rx_length_errors++; | |
2415 | ||
2416 | if (status & RXBD_LARGE) | |
2417 | estats->rx_large++; | |
2418 | else | |
2419 | estats->rx_short++; | |
2420 | } | |
2421 | if (status & RXBD_NONOCTET) { | |
2422 | stats->rx_frame_errors++; | |
2423 | estats->rx_nonoctet++; | |
2424 | } | |
2425 | if (status & RXBD_CRCERR) { | |
2426 | estats->rx_crcerr++; | |
2427 | stats->rx_crc_errors++; | |
2428 | } | |
2429 | if (status & RXBD_OVERRUN) { | |
2430 | estats->rx_overrun++; | |
2431 | stats->rx_crc_errors++; | |
2432 | } | |
2433 | } | |
2434 | ||
f4983704 | 2435 | irqreturn_t gfar_receive(int irq, void *grp_id) |
1da177e4 | 2436 | { |
f4983704 | 2437 | gfar_schedule_cleanup((struct gfar_priv_grp *)grp_id); |
1da177e4 LT |
2438 | return IRQ_HANDLED; |
2439 | } | |
2440 | ||
0bbaf069 KG |
2441 | static inline void gfar_rx_checksum(struct sk_buff *skb, struct rxfcb *fcb) |
2442 | { | |
2443 | /* If valid headers were found, and valid sums | |
2444 | * were verified, then we tell the kernel that no | |
2445 | * checksumming is necessary. Otherwise, it is */ | |
7f7f5316 | 2446 | if ((fcb->flags & RXFCB_CSUM_MASK) == (RXFCB_CIP | RXFCB_CTU)) |
0bbaf069 KG |
2447 | skb->ip_summed = CHECKSUM_UNNECESSARY; |
2448 | else | |
2449 | skb->ip_summed = CHECKSUM_NONE; | |
2450 | } | |
2451 | ||
2452 | ||
1da177e4 LT |
2453 | /* gfar_process_frame() -- handle one incoming packet if skb |
2454 | * isn't NULL. */ | |
2455 | static int gfar_process_frame(struct net_device *dev, struct sk_buff *skb, | |
2c2db48a | 2456 | int amount_pull) |
1da177e4 LT |
2457 | { |
2458 | struct gfar_private *priv = netdev_priv(dev); | |
0bbaf069 | 2459 | struct rxfcb *fcb = NULL; |
1da177e4 | 2460 | |
2c2db48a | 2461 | int ret; |
1da177e4 | 2462 | |
2c2db48a DH |
2463 | /* fcb is at the beginning if exists */ |
2464 | fcb = (struct rxfcb *)skb->data; | |
0bbaf069 | 2465 | |
2c2db48a DH |
2466 | /* Remove the FCB from the skb */ |
2467 | /* Remove the padded bytes, if there are any */ | |
f74dac08 SG |
2468 | if (amount_pull) { |
2469 | skb_record_rx_queue(skb, fcb->rq); | |
2c2db48a | 2470 | skb_pull(skb, amount_pull); |
f74dac08 | 2471 | } |
0bbaf069 | 2472 | |
2c2db48a DH |
2473 | if (priv->rx_csum_enable) |
2474 | gfar_rx_checksum(skb, fcb); | |
0bbaf069 | 2475 | |
2c2db48a DH |
2476 | /* Tell the skb what kind of packet this is */ |
2477 | skb->protocol = eth_type_trans(skb, dev); | |
1da177e4 | 2478 | |
2c2db48a DH |
2479 | /* Send the packet up the stack */ |
2480 | if (unlikely(priv->vlgrp && (fcb->flags & RXFCB_VLN))) | |
2481 | ret = vlan_hwaccel_receive_skb(skb, priv->vlgrp, fcb->vlctl); | |
2482 | else | |
2483 | ret = netif_receive_skb(skb); | |
0bbaf069 | 2484 | |
2c2db48a DH |
2485 | if (NET_RX_DROP == ret) |
2486 | priv->extra_stats.kernel_dropped++; | |
1da177e4 LT |
2487 | |
2488 | return 0; | |
2489 | } | |
2490 | ||
2491 | /* gfar_clean_rx_ring() -- Processes each frame in the rx ring | |
0bbaf069 | 2492 | * until the budget/quota has been reached. Returns the number |
1da177e4 LT |
2493 | * of frames handled |
2494 | */ | |
a12f801d | 2495 | int gfar_clean_rx_ring(struct gfar_priv_rx_q *rx_queue, int rx_work_limit) |
1da177e4 | 2496 | { |
a12f801d | 2497 | struct net_device *dev = rx_queue->dev; |
31de198b | 2498 | struct rxbd8 *bdp, *base; |
1da177e4 | 2499 | struct sk_buff *skb; |
2c2db48a DH |
2500 | int pkt_len; |
2501 | int amount_pull; | |
1da177e4 LT |
2502 | int howmany = 0; |
2503 | struct gfar_private *priv = netdev_priv(dev); | |
2504 | ||
2505 | /* Get the first full descriptor */ | |
a12f801d SG |
2506 | bdp = rx_queue->cur_rx; |
2507 | base = rx_queue->rx_bd_base; | |
1da177e4 | 2508 | |
2c2db48a DH |
2509 | amount_pull = (gfar_uses_fcb(priv) ? GMAC_FCB_LEN : 0) + |
2510 | priv->padding; | |
2511 | ||
1da177e4 | 2512 | while (!((bdp->status & RXBD_EMPTY) || (--rx_work_limit < 0))) { |
815b97c6 | 2513 | struct sk_buff *newskb; |
3b6330ce | 2514 | rmb(); |
815b97c6 AF |
2515 | |
2516 | /* Add another skb for the future */ | |
2517 | newskb = gfar_new_skb(dev); | |
2518 | ||
a12f801d | 2519 | skb = rx_queue->rx_skbuff[rx_queue->skb_currx]; |
1da177e4 | 2520 | |
4826857f | 2521 | dma_unmap_single(&priv->ofdev->dev, bdp->bufPtr, |
81183059 AF |
2522 | priv->rx_buffer_size, DMA_FROM_DEVICE); |
2523 | ||
815b97c6 AF |
2524 | /* We drop the frame if we failed to allocate a new buffer */ |
2525 | if (unlikely(!newskb || !(bdp->status & RXBD_LAST) || | |
2526 | bdp->status & RXBD_ERR)) { | |
2527 | count_errors(bdp->status, dev); | |
2528 | ||
2529 | if (unlikely(!newskb)) | |
2530 | newskb = skb; | |
4e2fd555 LB |
2531 | else if (skb) { |
2532 | /* | |
a6d36d56 | 2533 | * We need to un-reserve() the skb to what it |
4e2fd555 LB |
2534 | * was before gfar_new_skb() re-aligned |
2535 | * it to an RXBUF_ALIGNMENT boundary | |
2536 | * before we put the skb back on the | |
2537 | * recycle list. | |
2538 | */ | |
a6d36d56 | 2539 | skb_reserve(skb, -GFAR_CB(skb)->alignamount); |
0fd56bb5 | 2540 | __skb_queue_head(&priv->rx_recycle, skb); |
4e2fd555 | 2541 | } |
815b97c6 | 2542 | } else { |
1da177e4 | 2543 | /* Increment the number of packets */ |
a7f38041 | 2544 | rx_queue->stats.rx_packets++; |
1da177e4 LT |
2545 | howmany++; |
2546 | ||
2c2db48a DH |
2547 | if (likely(skb)) { |
2548 | pkt_len = bdp->length - ETH_FCS_LEN; | |
2549 | /* Remove the FCS from the packet length */ | |
2550 | skb_put(skb, pkt_len); | |
a7f38041 | 2551 | rx_queue->stats.rx_bytes += pkt_len; |
f74dac08 | 2552 | skb_record_rx_queue(skb, rx_queue->qindex); |
2c2db48a DH |
2553 | gfar_process_frame(dev, skb, amount_pull); |
2554 | ||
2555 | } else { | |
2556 | if (netif_msg_rx_err(priv)) | |
2557 | printk(KERN_WARNING | |
2558 | "%s: Missing skb!\n", dev->name); | |
a7f38041 | 2559 | rx_queue->stats.rx_dropped++; |
2c2db48a DH |
2560 | priv->extra_stats.rx_skbmissing++; |
2561 | } | |
1da177e4 | 2562 | |
1da177e4 LT |
2563 | } |
2564 | ||
a12f801d | 2565 | rx_queue->rx_skbuff[rx_queue->skb_currx] = newskb; |
1da177e4 | 2566 | |
815b97c6 | 2567 | /* Setup the new bdp */ |
a12f801d | 2568 | gfar_new_rxbdp(rx_queue, bdp, newskb); |
1da177e4 LT |
2569 | |
2570 | /* Update to the next pointer */ | |
a12f801d | 2571 | bdp = next_bd(bdp, base, rx_queue->rx_ring_size); |
1da177e4 LT |
2572 | |
2573 | /* update to point at the next skb */ | |
a12f801d SG |
2574 | rx_queue->skb_currx = |
2575 | (rx_queue->skb_currx + 1) & | |
2576 | RX_RING_MOD_MASK(rx_queue->rx_ring_size); | |
1da177e4 LT |
2577 | } |
2578 | ||
2579 | /* Update the current rxbd pointer to be the next one */ | |
a12f801d | 2580 | rx_queue->cur_rx = bdp; |
1da177e4 | 2581 | |
1da177e4 LT |
2582 | return howmany; |
2583 | } | |
2584 | ||
bea3348e | 2585 | static int gfar_poll(struct napi_struct *napi, int budget) |
1da177e4 | 2586 | { |
fba4ed03 SG |
2587 | struct gfar_priv_grp *gfargrp = container_of(napi, |
2588 | struct gfar_priv_grp, napi); | |
2589 | struct gfar_private *priv = gfargrp->priv; | |
46ceb60c | 2590 | struct gfar __iomem *regs = gfargrp->regs; |
a12f801d | 2591 | struct gfar_priv_tx_q *tx_queue = NULL; |
fba4ed03 SG |
2592 | struct gfar_priv_rx_q *rx_queue = NULL; |
2593 | int rx_cleaned = 0, budget_per_queue = 0, rx_cleaned_per_queue = 0; | |
18294ad1 AV |
2594 | int tx_cleaned = 0, i, left_over_budget = budget; |
2595 | unsigned long serviced_queues = 0; | |
fba4ed03 | 2596 | int num_queues = 0; |
d080cd63 | 2597 | |
fba4ed03 SG |
2598 | num_queues = gfargrp->num_rx_queues; |
2599 | budget_per_queue = budget/num_queues; | |
2600 | ||
8c7396ae DH |
2601 | /* Clear IEVENT, so interrupts aren't called again |
2602 | * because of the packets that have already arrived */ | |
f4983704 | 2603 | gfar_write(®s->ievent, IEVENT_RTX_MASK); |
8c7396ae | 2604 | |
fba4ed03 | 2605 | while (num_queues && left_over_budget) { |
1da177e4 | 2606 | |
fba4ed03 SG |
2607 | budget_per_queue = left_over_budget/num_queues; |
2608 | left_over_budget = 0; | |
2609 | ||
984b3f57 | 2610 | for_each_set_bit(i, &gfargrp->rx_bit_map, priv->num_rx_queues) { |
fba4ed03 SG |
2611 | if (test_bit(i, &serviced_queues)) |
2612 | continue; | |
2613 | rx_queue = priv->rx_queue[i]; | |
2614 | tx_queue = priv->tx_queue[rx_queue->qindex]; | |
2615 | ||
a3bc1f11 | 2616 | tx_cleaned += gfar_clean_tx_ring(tx_queue); |
fba4ed03 SG |
2617 | rx_cleaned_per_queue = gfar_clean_rx_ring(rx_queue, |
2618 | budget_per_queue); | |
2619 | rx_cleaned += rx_cleaned_per_queue; | |
2620 | if(rx_cleaned_per_queue < budget_per_queue) { | |
2621 | left_over_budget = left_over_budget + | |
2622 | (budget_per_queue - rx_cleaned_per_queue); | |
2623 | set_bit(i, &serviced_queues); | |
2624 | num_queues--; | |
2625 | } | |
2626 | } | |
2627 | } | |
1da177e4 | 2628 | |
42199884 AF |
2629 | if (tx_cleaned) |
2630 | return budget; | |
2631 | ||
2632 | if (rx_cleaned < budget) { | |
288379f0 | 2633 | napi_complete(napi); |
1da177e4 LT |
2634 | |
2635 | /* Clear the halt bit in RSTAT */ | |
fba4ed03 | 2636 | gfar_write(®s->rstat, gfargrp->rstat); |
1da177e4 | 2637 | |
f4983704 | 2638 | gfar_write(®s->imask, IMASK_DEFAULT); |
1da177e4 LT |
2639 | |
2640 | /* If we are coalescing interrupts, update the timer */ | |
2641 | /* Otherwise, clear it */ | |
46ceb60c SG |
2642 | gfar_configure_coalescing(priv, |
2643 | gfargrp->rx_bit_map, gfargrp->tx_bit_map); | |
1da177e4 LT |
2644 | } |
2645 | ||
42199884 | 2646 | return rx_cleaned; |
1da177e4 | 2647 | } |
1da177e4 | 2648 | |
f2d71c2d VW |
2649 | #ifdef CONFIG_NET_POLL_CONTROLLER |
2650 | /* | |
2651 | * Polling 'interrupt' - used by things like netconsole to send skbs | |
2652 | * without having to re-enable interrupts. It's not called while | |
2653 | * the interrupt routine is executing. | |
2654 | */ | |
2655 | static void gfar_netpoll(struct net_device *dev) | |
2656 | { | |
2657 | struct gfar_private *priv = netdev_priv(dev); | |
46ceb60c | 2658 | int i = 0; |
f2d71c2d VW |
2659 | |
2660 | /* If the device has multiple interrupts, run tx/rx */ | |
b31a1d8b | 2661 | if (priv->device_flags & FSL_GIANFAR_DEV_HAS_MULTI_INTR) { |
46ceb60c SG |
2662 | for (i = 0; i < priv->num_grps; i++) { |
2663 | disable_irq(priv->gfargrp[i].interruptTransmit); | |
2664 | disable_irq(priv->gfargrp[i].interruptReceive); | |
2665 | disable_irq(priv->gfargrp[i].interruptError); | |
2666 | gfar_interrupt(priv->gfargrp[i].interruptTransmit, | |
2667 | &priv->gfargrp[i]); | |
2668 | enable_irq(priv->gfargrp[i].interruptError); | |
2669 | enable_irq(priv->gfargrp[i].interruptReceive); | |
2670 | enable_irq(priv->gfargrp[i].interruptTransmit); | |
2671 | } | |
f2d71c2d | 2672 | } else { |
46ceb60c SG |
2673 | for (i = 0; i < priv->num_grps; i++) { |
2674 | disable_irq(priv->gfargrp[i].interruptTransmit); | |
2675 | gfar_interrupt(priv->gfargrp[i].interruptTransmit, | |
2676 | &priv->gfargrp[i]); | |
2677 | enable_irq(priv->gfargrp[i].interruptTransmit); | |
43de004b | 2678 | } |
f2d71c2d VW |
2679 | } |
2680 | } | |
2681 | #endif | |
2682 | ||
1da177e4 | 2683 | /* The interrupt handler for devices with one interrupt */ |
f4983704 | 2684 | static irqreturn_t gfar_interrupt(int irq, void *grp_id) |
1da177e4 | 2685 | { |
f4983704 | 2686 | struct gfar_priv_grp *gfargrp = grp_id; |
1da177e4 LT |
2687 | |
2688 | /* Save ievent for future reference */ | |
f4983704 | 2689 | u32 events = gfar_read(&gfargrp->regs->ievent); |
1da177e4 | 2690 | |
1da177e4 | 2691 | /* Check for reception */ |
538cc7ee | 2692 | if (events & IEVENT_RX_MASK) |
f4983704 | 2693 | gfar_receive(irq, grp_id); |
1da177e4 LT |
2694 | |
2695 | /* Check for transmit completion */ | |
538cc7ee | 2696 | if (events & IEVENT_TX_MASK) |
f4983704 | 2697 | gfar_transmit(irq, grp_id); |
1da177e4 | 2698 | |
538cc7ee SS |
2699 | /* Check for errors */ |
2700 | if (events & IEVENT_ERR_MASK) | |
f4983704 | 2701 | gfar_error(irq, grp_id); |
1da177e4 LT |
2702 | |
2703 | return IRQ_HANDLED; | |
2704 | } | |
2705 | ||
1da177e4 LT |
2706 | /* Called every time the controller might need to be made |
2707 | * aware of new link state. The PHY code conveys this | |
bb40dcbb | 2708 | * information through variables in the phydev structure, and this |
1da177e4 LT |
2709 | * function converts those variables into the appropriate |
2710 | * register values, and can bring down the device if needed. | |
2711 | */ | |
2712 | static void adjust_link(struct net_device *dev) | |
2713 | { | |
2714 | struct gfar_private *priv = netdev_priv(dev); | |
46ceb60c | 2715 | struct gfar __iomem *regs = priv->gfargrp[0].regs; |
bb40dcbb AF |
2716 | unsigned long flags; |
2717 | struct phy_device *phydev = priv->phydev; | |
2718 | int new_state = 0; | |
2719 | ||
fba4ed03 SG |
2720 | local_irq_save(flags); |
2721 | lock_tx_qs(priv); | |
2722 | ||
bb40dcbb AF |
2723 | if (phydev->link) { |
2724 | u32 tempval = gfar_read(®s->maccfg2); | |
7f7f5316 | 2725 | u32 ecntrl = gfar_read(®s->ecntrl); |
1da177e4 | 2726 | |
1da177e4 LT |
2727 | /* Now we make sure that we can be in full duplex mode. |
2728 | * If not, we operate in half-duplex mode. */ | |
bb40dcbb AF |
2729 | if (phydev->duplex != priv->oldduplex) { |
2730 | new_state = 1; | |
2731 | if (!(phydev->duplex)) | |
1da177e4 | 2732 | tempval &= ~(MACCFG2_FULL_DUPLEX); |
bb40dcbb | 2733 | else |
1da177e4 | 2734 | tempval |= MACCFG2_FULL_DUPLEX; |
1da177e4 | 2735 | |
bb40dcbb | 2736 | priv->oldduplex = phydev->duplex; |
1da177e4 LT |
2737 | } |
2738 | ||
bb40dcbb AF |
2739 | if (phydev->speed != priv->oldspeed) { |
2740 | new_state = 1; | |
2741 | switch (phydev->speed) { | |
1da177e4 | 2742 | case 1000: |
1da177e4 LT |
2743 | tempval = |
2744 | ((tempval & ~(MACCFG2_IF)) | MACCFG2_GMII); | |
f430e49e LY |
2745 | |
2746 | ecntrl &= ~(ECNTRL_R100); | |
1da177e4 LT |
2747 | break; |
2748 | case 100: | |
2749 | case 10: | |
1da177e4 LT |
2750 | tempval = |
2751 | ((tempval & ~(MACCFG2_IF)) | MACCFG2_MII); | |
7f7f5316 AF |
2752 | |
2753 | /* Reduced mode distinguishes | |
2754 | * between 10 and 100 */ | |
2755 | if (phydev->speed == SPEED_100) | |
2756 | ecntrl |= ECNTRL_R100; | |
2757 | else | |
2758 | ecntrl &= ~(ECNTRL_R100); | |
1da177e4 LT |
2759 | break; |
2760 | default: | |
0bbaf069 KG |
2761 | if (netif_msg_link(priv)) |
2762 | printk(KERN_WARNING | |
bb40dcbb AF |
2763 | "%s: Ack! Speed (%d) is not 10/100/1000!\n", |
2764 | dev->name, phydev->speed); | |
1da177e4 LT |
2765 | break; |
2766 | } | |
2767 | ||
bb40dcbb | 2768 | priv->oldspeed = phydev->speed; |
1da177e4 LT |
2769 | } |
2770 | ||
bb40dcbb | 2771 | gfar_write(®s->maccfg2, tempval); |
7f7f5316 | 2772 | gfar_write(®s->ecntrl, ecntrl); |
bb40dcbb | 2773 | |
1da177e4 | 2774 | if (!priv->oldlink) { |
bb40dcbb | 2775 | new_state = 1; |
1da177e4 | 2776 | priv->oldlink = 1; |
1da177e4 | 2777 | } |
bb40dcbb AF |
2778 | } else if (priv->oldlink) { |
2779 | new_state = 1; | |
2780 | priv->oldlink = 0; | |
2781 | priv->oldspeed = 0; | |
2782 | priv->oldduplex = -1; | |
1da177e4 | 2783 | } |
1da177e4 | 2784 | |
bb40dcbb AF |
2785 | if (new_state && netif_msg_link(priv)) |
2786 | phy_print_status(phydev); | |
fba4ed03 SG |
2787 | unlock_tx_qs(priv); |
2788 | local_irq_restore(flags); | |
bb40dcbb | 2789 | } |
1da177e4 LT |
2790 | |
2791 | /* Update the hash table based on the current list of multicast | |
2792 | * addresses we subscribe to. Also, change the promiscuity of | |
2793 | * the device based on the flags (this function is called | |
2794 | * whenever dev->flags is changed */ | |
2795 | static void gfar_set_multi(struct net_device *dev) | |
2796 | { | |
2797 | struct dev_mc_list *mc_ptr; | |
2798 | struct gfar_private *priv = netdev_priv(dev); | |
46ceb60c | 2799 | struct gfar __iomem *regs = priv->gfargrp[0].regs; |
1da177e4 LT |
2800 | u32 tempval; |
2801 | ||
a12f801d | 2802 | if (dev->flags & IFF_PROMISC) { |
1da177e4 LT |
2803 | /* Set RCTRL to PROM */ |
2804 | tempval = gfar_read(®s->rctrl); | |
2805 | tempval |= RCTRL_PROM; | |
2806 | gfar_write(®s->rctrl, tempval); | |
2807 | } else { | |
2808 | /* Set RCTRL to not PROM */ | |
2809 | tempval = gfar_read(®s->rctrl); | |
2810 | tempval &= ~(RCTRL_PROM); | |
2811 | gfar_write(®s->rctrl, tempval); | |
2812 | } | |
6aa20a22 | 2813 | |
a12f801d | 2814 | if (dev->flags & IFF_ALLMULTI) { |
1da177e4 | 2815 | /* Set the hash to rx all multicast frames */ |
0bbaf069 KG |
2816 | gfar_write(®s->igaddr0, 0xffffffff); |
2817 | gfar_write(®s->igaddr1, 0xffffffff); | |
2818 | gfar_write(®s->igaddr2, 0xffffffff); | |
2819 | gfar_write(®s->igaddr3, 0xffffffff); | |
2820 | gfar_write(®s->igaddr4, 0xffffffff); | |
2821 | gfar_write(®s->igaddr5, 0xffffffff); | |
2822 | gfar_write(®s->igaddr6, 0xffffffff); | |
2823 | gfar_write(®s->igaddr7, 0xffffffff); | |
1da177e4 LT |
2824 | gfar_write(®s->gaddr0, 0xffffffff); |
2825 | gfar_write(®s->gaddr1, 0xffffffff); | |
2826 | gfar_write(®s->gaddr2, 0xffffffff); | |
2827 | gfar_write(®s->gaddr3, 0xffffffff); | |
2828 | gfar_write(®s->gaddr4, 0xffffffff); | |
2829 | gfar_write(®s->gaddr5, 0xffffffff); | |
2830 | gfar_write(®s->gaddr6, 0xffffffff); | |
2831 | gfar_write(®s->gaddr7, 0xffffffff); | |
2832 | } else { | |
7f7f5316 AF |
2833 | int em_num; |
2834 | int idx; | |
2835 | ||
1da177e4 | 2836 | /* zero out the hash */ |
0bbaf069 KG |
2837 | gfar_write(®s->igaddr0, 0x0); |
2838 | gfar_write(®s->igaddr1, 0x0); | |
2839 | gfar_write(®s->igaddr2, 0x0); | |
2840 | gfar_write(®s->igaddr3, 0x0); | |
2841 | gfar_write(®s->igaddr4, 0x0); | |
2842 | gfar_write(®s->igaddr5, 0x0); | |
2843 | gfar_write(®s->igaddr6, 0x0); | |
2844 | gfar_write(®s->igaddr7, 0x0); | |
1da177e4 LT |
2845 | gfar_write(®s->gaddr0, 0x0); |
2846 | gfar_write(®s->gaddr1, 0x0); | |
2847 | gfar_write(®s->gaddr2, 0x0); | |
2848 | gfar_write(®s->gaddr3, 0x0); | |
2849 | gfar_write(®s->gaddr4, 0x0); | |
2850 | gfar_write(®s->gaddr5, 0x0); | |
2851 | gfar_write(®s->gaddr6, 0x0); | |
2852 | gfar_write(®s->gaddr7, 0x0); | |
2853 | ||
7f7f5316 AF |
2854 | /* If we have extended hash tables, we need to |
2855 | * clear the exact match registers to prepare for | |
2856 | * setting them */ | |
2857 | if (priv->extended_hash) { | |
2858 | em_num = GFAR_EM_NUM + 1; | |
2859 | gfar_clear_exact_match(dev); | |
2860 | idx = 1; | |
2861 | } else { | |
2862 | idx = 0; | |
2863 | em_num = 0; | |
2864 | } | |
2865 | ||
4cd24eaf | 2866 | if (netdev_mc_empty(dev)) |
1da177e4 LT |
2867 | return; |
2868 | ||
2869 | /* Parse the list, and set the appropriate bits */ | |
48e2f183 | 2870 | netdev_for_each_mc_addr(mc_ptr, dev) { |
7f7f5316 AF |
2871 | if (idx < em_num) { |
2872 | gfar_set_mac_for_addr(dev, idx, | |
2873 | mc_ptr->dmi_addr); | |
2874 | idx++; | |
2875 | } else | |
2876 | gfar_set_hash_for_addr(dev, mc_ptr->dmi_addr); | |
1da177e4 LT |
2877 | } |
2878 | } | |
2879 | ||
2880 | return; | |
2881 | } | |
2882 | ||
7f7f5316 AF |
2883 | |
2884 | /* Clears each of the exact match registers to zero, so they | |
2885 | * don't interfere with normal reception */ | |
2886 | static void gfar_clear_exact_match(struct net_device *dev) | |
2887 | { | |
2888 | int idx; | |
2889 | u8 zero_arr[MAC_ADDR_LEN] = {0,0,0,0,0,0}; | |
2890 | ||
2891 | for(idx = 1;idx < GFAR_EM_NUM + 1;idx++) | |
2892 | gfar_set_mac_for_addr(dev, idx, (u8 *)zero_arr); | |
2893 | } | |
2894 | ||
1da177e4 LT |
2895 | /* Set the appropriate hash bit for the given addr */ |
2896 | /* The algorithm works like so: | |
2897 | * 1) Take the Destination Address (ie the multicast address), and | |
2898 | * do a CRC on it (little endian), and reverse the bits of the | |
2899 | * result. | |
2900 | * 2) Use the 8 most significant bits as a hash into a 256-entry | |
2901 | * table. The table is controlled through 8 32-bit registers: | |
2902 | * gaddr0-7. gaddr0's MSB is entry 0, and gaddr7's LSB is | |
2903 | * gaddr7. This means that the 3 most significant bits in the | |
2904 | * hash index which gaddr register to use, and the 5 other bits | |
2905 | * indicate which bit (assuming an IBM numbering scheme, which | |
2906 | * for PowerPC (tm) is usually the case) in the register holds | |
2907 | * the entry. */ | |
2908 | static void gfar_set_hash_for_addr(struct net_device *dev, u8 *addr) | |
2909 | { | |
2910 | u32 tempval; | |
2911 | struct gfar_private *priv = netdev_priv(dev); | |
1da177e4 | 2912 | u32 result = ether_crc(MAC_ADDR_LEN, addr); |
0bbaf069 KG |
2913 | int width = priv->hash_width; |
2914 | u8 whichbit = (result >> (32 - width)) & 0x1f; | |
2915 | u8 whichreg = result >> (32 - width + 5); | |
1da177e4 LT |
2916 | u32 value = (1 << (31-whichbit)); |
2917 | ||
0bbaf069 | 2918 | tempval = gfar_read(priv->hash_regs[whichreg]); |
1da177e4 | 2919 | tempval |= value; |
0bbaf069 | 2920 | gfar_write(priv->hash_regs[whichreg], tempval); |
1da177e4 LT |
2921 | |
2922 | return; | |
2923 | } | |
2924 | ||
7f7f5316 AF |
2925 | |
2926 | /* There are multiple MAC Address register pairs on some controllers | |
2927 | * This function sets the numth pair to a given address | |
2928 | */ | |
2929 | static void gfar_set_mac_for_addr(struct net_device *dev, int num, u8 *addr) | |
2930 | { | |
2931 | struct gfar_private *priv = netdev_priv(dev); | |
46ceb60c | 2932 | struct gfar __iomem *regs = priv->gfargrp[0].regs; |
7f7f5316 AF |
2933 | int idx; |
2934 | char tmpbuf[MAC_ADDR_LEN]; | |
2935 | u32 tempval; | |
f4983704 | 2936 | u32 __iomem *macptr = ®s->macstnaddr1; |
7f7f5316 AF |
2937 | |
2938 | macptr += num*2; | |
2939 | ||
2940 | /* Now copy it into the mac registers backwards, cuz */ | |
2941 | /* little endian is silly */ | |
2942 | for (idx = 0; idx < MAC_ADDR_LEN; idx++) | |
2943 | tmpbuf[MAC_ADDR_LEN - 1 - idx] = addr[idx]; | |
2944 | ||
2945 | gfar_write(macptr, *((u32 *) (tmpbuf))); | |
2946 | ||
2947 | tempval = *((u32 *) (tmpbuf + 4)); | |
2948 | ||
2949 | gfar_write(macptr+1, tempval); | |
2950 | } | |
2951 | ||
1da177e4 | 2952 | /* GFAR error interrupt handler */ |
f4983704 | 2953 | static irqreturn_t gfar_error(int irq, void *grp_id) |
1da177e4 | 2954 | { |
f4983704 SG |
2955 | struct gfar_priv_grp *gfargrp = grp_id; |
2956 | struct gfar __iomem *regs = gfargrp->regs; | |
2957 | struct gfar_private *priv= gfargrp->priv; | |
2958 | struct net_device *dev = priv->ndev; | |
1da177e4 LT |
2959 | |
2960 | /* Save ievent for future reference */ | |
f4983704 | 2961 | u32 events = gfar_read(®s->ievent); |
1da177e4 LT |
2962 | |
2963 | /* Clear IEVENT */ | |
f4983704 | 2964 | gfar_write(®s->ievent, events & IEVENT_ERR_MASK); |
d87eb127 SW |
2965 | |
2966 | /* Magic Packet is not an error. */ | |
b31a1d8b | 2967 | if ((priv->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET) && |
d87eb127 SW |
2968 | (events & IEVENT_MAG)) |
2969 | events &= ~IEVENT_MAG; | |
1da177e4 LT |
2970 | |
2971 | /* Hmm... */ | |
0bbaf069 KG |
2972 | if (netif_msg_rx_err(priv) || netif_msg_tx_err(priv)) |
2973 | printk(KERN_DEBUG "%s: error interrupt (ievent=0x%08x imask=0x%08x)\n", | |
f4983704 | 2974 | dev->name, events, gfar_read(®s->imask)); |
1da177e4 LT |
2975 | |
2976 | /* Update the error counters */ | |
2977 | if (events & IEVENT_TXE) { | |
09f75cd7 | 2978 | dev->stats.tx_errors++; |
1da177e4 LT |
2979 | |
2980 | if (events & IEVENT_LC) | |
09f75cd7 | 2981 | dev->stats.tx_window_errors++; |
1da177e4 | 2982 | if (events & IEVENT_CRL) |
09f75cd7 | 2983 | dev->stats.tx_aborted_errors++; |
1da177e4 | 2984 | if (events & IEVENT_XFUN) { |
836cf7fa AV |
2985 | unsigned long flags; |
2986 | ||
0bbaf069 | 2987 | if (netif_msg_tx_err(priv)) |
538cc7ee SS |
2988 | printk(KERN_DEBUG "%s: TX FIFO underrun, " |
2989 | "packet dropped.\n", dev->name); | |
09f75cd7 | 2990 | dev->stats.tx_dropped++; |
1da177e4 LT |
2991 | priv->extra_stats.tx_underrun++; |
2992 | ||
836cf7fa AV |
2993 | local_irq_save(flags); |
2994 | lock_tx_qs(priv); | |
2995 | ||
1da177e4 | 2996 | /* Reactivate the Tx Queues */ |
fba4ed03 | 2997 | gfar_write(®s->tstat, gfargrp->tstat); |
836cf7fa AV |
2998 | |
2999 | unlock_tx_qs(priv); | |
3000 | local_irq_restore(flags); | |
1da177e4 | 3001 | } |
0bbaf069 KG |
3002 | if (netif_msg_tx_err(priv)) |
3003 | printk(KERN_DEBUG "%s: Transmit Error\n", dev->name); | |
1da177e4 LT |
3004 | } |
3005 | if (events & IEVENT_BSY) { | |
09f75cd7 | 3006 | dev->stats.rx_errors++; |
1da177e4 LT |
3007 | priv->extra_stats.rx_bsy++; |
3008 | ||
f4983704 | 3009 | gfar_receive(irq, grp_id); |
1da177e4 | 3010 | |
0bbaf069 | 3011 | if (netif_msg_rx_err(priv)) |
538cc7ee | 3012 | printk(KERN_DEBUG "%s: busy error (rstat: %x)\n", |
f4983704 | 3013 | dev->name, gfar_read(®s->rstat)); |
1da177e4 LT |
3014 | } |
3015 | if (events & IEVENT_BABR) { | |
09f75cd7 | 3016 | dev->stats.rx_errors++; |
1da177e4 LT |
3017 | priv->extra_stats.rx_babr++; |
3018 | ||
0bbaf069 | 3019 | if (netif_msg_rx_err(priv)) |
538cc7ee | 3020 | printk(KERN_DEBUG "%s: babbling RX error\n", dev->name); |
1da177e4 LT |
3021 | } |
3022 | if (events & IEVENT_EBERR) { | |
3023 | priv->extra_stats.eberr++; | |
0bbaf069 | 3024 | if (netif_msg_rx_err(priv)) |
538cc7ee | 3025 | printk(KERN_DEBUG "%s: bus error\n", dev->name); |
1da177e4 | 3026 | } |
0bbaf069 | 3027 | if ((events & IEVENT_RXC) && netif_msg_rx_status(priv)) |
538cc7ee | 3028 | printk(KERN_DEBUG "%s: control frame\n", dev->name); |
1da177e4 LT |
3029 | |
3030 | if (events & IEVENT_BABT) { | |
3031 | priv->extra_stats.tx_babt++; | |
0bbaf069 | 3032 | if (netif_msg_tx_err(priv)) |
538cc7ee | 3033 | printk(KERN_DEBUG "%s: babbling TX error\n", dev->name); |
1da177e4 LT |
3034 | } |
3035 | return IRQ_HANDLED; | |
3036 | } | |
3037 | ||
b31a1d8b AF |
3038 | static struct of_device_id gfar_match[] = |
3039 | { | |
3040 | { | |
3041 | .type = "network", | |
3042 | .compatible = "gianfar", | |
3043 | }, | |
46ceb60c SG |
3044 | { |
3045 | .compatible = "fsl,etsec2", | |
3046 | }, | |
b31a1d8b AF |
3047 | {}, |
3048 | }; | |
e72701ac | 3049 | MODULE_DEVICE_TABLE(of, gfar_match); |
b31a1d8b | 3050 | |
1da177e4 | 3051 | /* Structure for a device driver */ |
b31a1d8b AF |
3052 | static struct of_platform_driver gfar_driver = { |
3053 | .name = "fsl-gianfar", | |
3054 | .match_table = gfar_match, | |
3055 | ||
1da177e4 LT |
3056 | .probe = gfar_probe, |
3057 | .remove = gfar_remove, | |
be926fc4 AV |
3058 | .suspend = gfar_legacy_suspend, |
3059 | .resume = gfar_legacy_resume, | |
3060 | .driver.pm = GFAR_PM_OPS, | |
1da177e4 LT |
3061 | }; |
3062 | ||
3063 | static int __init gfar_init(void) | |
3064 | { | |
1577ecef | 3065 | return of_register_platform_driver(&gfar_driver); |
1da177e4 LT |
3066 | } |
3067 | ||
3068 | static void __exit gfar_exit(void) | |
3069 | { | |
b31a1d8b | 3070 | of_unregister_platform_driver(&gfar_driver); |
1da177e4 LT |
3071 | } |
3072 | ||
3073 | module_init(gfar_init); | |
3074 | module_exit(gfar_exit); | |
3075 |