Commit | Line | Data |
---|---|---|
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> |
cc772ab7 | 85 | #include <linux/net_tstamp.h> |
1da177e4 LT |
86 | |
87 | #include <asm/io.h> | |
7d350977 | 88 | #include <asm/reg.h> |
1da177e4 LT |
89 | #include <asm/irq.h> |
90 | #include <asm/uaccess.h> | |
91 | #include <linux/module.h> | |
1da177e4 LT |
92 | #include <linux/dma-mapping.h> |
93 | #include <linux/crc32.h> | |
bb40dcbb AF |
94 | #include <linux/mii.h> |
95 | #include <linux/phy.h> | |
b31a1d8b AF |
96 | #include <linux/phy_fixed.h> |
97 | #include <linux/of.h> | |
1da177e4 LT |
98 | |
99 | #include "gianfar.h" | |
1577ecef | 100 | #include "fsl_pq_mdio.h" |
1da177e4 LT |
101 | |
102 | #define TX_TIMEOUT (1*HZ) | |
1da177e4 LT |
103 | #undef BRIEF_GFAR_ERRORS |
104 | #undef VERBOSE_GFAR_ERRORS | |
105 | ||
1da177e4 | 106 | const char gfar_driver_name[] = "Gianfar Ethernet"; |
7f7f5316 | 107 | const char gfar_driver_version[] = "1.3"; |
1da177e4 | 108 | |
1da177e4 LT |
109 | static int gfar_enet_open(struct net_device *dev); |
110 | static int gfar_start_xmit(struct sk_buff *skb, struct net_device *dev); | |
ab939905 | 111 | static void gfar_reset_task(struct work_struct *work); |
1da177e4 LT |
112 | static void gfar_timeout(struct net_device *dev); |
113 | static int gfar_close(struct net_device *dev); | |
815b97c6 | 114 | struct sk_buff *gfar_new_skb(struct net_device *dev); |
a12f801d | 115 | static void gfar_new_rxbdp(struct gfar_priv_rx_q *rx_queue, struct rxbd8 *bdp, |
815b97c6 | 116 | struct sk_buff *skb); |
1da177e4 LT |
117 | static int gfar_set_mac_address(struct net_device *dev); |
118 | static int gfar_change_mtu(struct net_device *dev, int new_mtu); | |
7d12e780 DH |
119 | static irqreturn_t gfar_error(int irq, void *dev_id); |
120 | static irqreturn_t gfar_transmit(int irq, void *dev_id); | |
121 | static irqreturn_t gfar_interrupt(int irq, void *dev_id); | |
1da177e4 LT |
122 | static void adjust_link(struct net_device *dev); |
123 | static void init_registers(struct net_device *dev); | |
124 | static int init_phy(struct net_device *dev); | |
2dc11581 | 125 | static int gfar_probe(struct platform_device *ofdev, |
b31a1d8b | 126 | const struct of_device_id *match); |
2dc11581 | 127 | static int gfar_remove(struct platform_device *ofdev); |
bb40dcbb | 128 | static void free_skb_resources(struct gfar_private *priv); |
1da177e4 LT |
129 | static void gfar_set_multi(struct net_device *dev); |
130 | static void gfar_set_hash_for_addr(struct net_device *dev, u8 *addr); | |
d3c12873 | 131 | static void gfar_configure_serdes(struct net_device *dev); |
bea3348e | 132 | static int gfar_poll(struct napi_struct *napi, int budget); |
f2d71c2d VW |
133 | #ifdef CONFIG_NET_POLL_CONTROLLER |
134 | static void gfar_netpoll(struct net_device *dev); | |
135 | #endif | |
a12f801d SG |
136 | int gfar_clean_rx_ring(struct gfar_priv_rx_q *rx_queue, int rx_work_limit); |
137 | static int gfar_clean_tx_ring(struct gfar_priv_tx_q *tx_queue); | |
2c2db48a DH |
138 | static int gfar_process_frame(struct net_device *dev, struct sk_buff *skb, |
139 | int amount_pull); | |
0bbaf069 KG |
140 | static void gfar_vlan_rx_register(struct net_device *netdev, |
141 | struct vlan_group *grp); | |
7f7f5316 | 142 | void gfar_halt(struct net_device *dev); |
d87eb127 | 143 | static void gfar_halt_nodisable(struct net_device *dev); |
7f7f5316 AF |
144 | void gfar_start(struct net_device *dev); |
145 | static void gfar_clear_exact_match(struct net_device *dev); | |
146 | static void gfar_set_mac_for_addr(struct net_device *dev, int num, u8 *addr); | |
26ccfc37 | 147 | static int gfar_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); |
1da177e4 | 148 | |
1da177e4 LT |
149 | MODULE_AUTHOR("Freescale Semiconductor, Inc"); |
150 | MODULE_DESCRIPTION("Gianfar Ethernet Driver"); | |
151 | MODULE_LICENSE("GPL"); | |
152 | ||
a12f801d | 153 | static void gfar_init_rxbdp(struct gfar_priv_rx_q *rx_queue, struct rxbd8 *bdp, |
8a102fe0 AV |
154 | dma_addr_t buf) |
155 | { | |
8a102fe0 AV |
156 | u32 lstatus; |
157 | ||
158 | bdp->bufPtr = buf; | |
159 | ||
160 | lstatus = BD_LFLAG(RXBD_EMPTY | RXBD_INTERRUPT); | |
a12f801d | 161 | if (bdp == rx_queue->rx_bd_base + rx_queue->rx_ring_size - 1) |
8a102fe0 AV |
162 | lstatus |= BD_LFLAG(RXBD_WRAP); |
163 | ||
164 | eieio(); | |
165 | ||
166 | bdp->lstatus = lstatus; | |
167 | } | |
168 | ||
8728327e | 169 | static int gfar_init_bds(struct net_device *ndev) |
826aa4a0 | 170 | { |
8728327e | 171 | struct gfar_private *priv = netdev_priv(ndev); |
a12f801d SG |
172 | struct gfar_priv_tx_q *tx_queue = NULL; |
173 | struct gfar_priv_rx_q *rx_queue = NULL; | |
826aa4a0 AV |
174 | struct txbd8 *txbdp; |
175 | struct rxbd8 *rxbdp; | |
fba4ed03 | 176 | int i, j; |
a12f801d | 177 | |
fba4ed03 SG |
178 | for (i = 0; i < priv->num_tx_queues; i++) { |
179 | tx_queue = priv->tx_queue[i]; | |
180 | /* Initialize some variables in our dev structure */ | |
181 | tx_queue->num_txbdfree = tx_queue->tx_ring_size; | |
182 | tx_queue->dirty_tx = tx_queue->tx_bd_base; | |
183 | tx_queue->cur_tx = tx_queue->tx_bd_base; | |
184 | tx_queue->skb_curtx = 0; | |
185 | tx_queue->skb_dirtytx = 0; | |
186 | ||
187 | /* Initialize Transmit Descriptor Ring */ | |
188 | txbdp = tx_queue->tx_bd_base; | |
189 | for (j = 0; j < tx_queue->tx_ring_size; j++) { | |
190 | txbdp->lstatus = 0; | |
191 | txbdp->bufPtr = 0; | |
192 | txbdp++; | |
193 | } | |
8728327e | 194 | |
fba4ed03 SG |
195 | /* Set the last descriptor in the ring to indicate wrap */ |
196 | txbdp--; | |
197 | txbdp->status |= TXBD_WRAP; | |
8728327e AV |
198 | } |
199 | ||
fba4ed03 SG |
200 | for (i = 0; i < priv->num_rx_queues; i++) { |
201 | rx_queue = priv->rx_queue[i]; | |
202 | rx_queue->cur_rx = rx_queue->rx_bd_base; | |
203 | rx_queue->skb_currx = 0; | |
204 | rxbdp = rx_queue->rx_bd_base; | |
8728327e | 205 | |
fba4ed03 SG |
206 | for (j = 0; j < rx_queue->rx_ring_size; j++) { |
207 | struct sk_buff *skb = rx_queue->rx_skbuff[j]; | |
8728327e | 208 | |
fba4ed03 SG |
209 | if (skb) { |
210 | gfar_init_rxbdp(rx_queue, rxbdp, | |
211 | rxbdp->bufPtr); | |
212 | } else { | |
213 | skb = gfar_new_skb(ndev); | |
214 | if (!skb) { | |
215 | pr_err("%s: Can't allocate RX buffers\n", | |
216 | ndev->name); | |
217 | goto err_rxalloc_fail; | |
218 | } | |
219 | rx_queue->rx_skbuff[j] = skb; | |
220 | ||
221 | gfar_new_rxbdp(rx_queue, rxbdp, skb); | |
8728327e | 222 | } |
8728327e | 223 | |
fba4ed03 | 224 | rxbdp++; |
8728327e AV |
225 | } |
226 | ||
8728327e AV |
227 | } |
228 | ||
229 | return 0; | |
fba4ed03 SG |
230 | |
231 | err_rxalloc_fail: | |
232 | free_skb_resources(priv); | |
233 | return -ENOMEM; | |
8728327e AV |
234 | } |
235 | ||
236 | static int gfar_alloc_skb_resources(struct net_device *ndev) | |
237 | { | |
826aa4a0 | 238 | void *vaddr; |
fba4ed03 SG |
239 | dma_addr_t addr; |
240 | int i, j, k; | |
826aa4a0 AV |
241 | struct gfar_private *priv = netdev_priv(ndev); |
242 | struct device *dev = &priv->ofdev->dev; | |
a12f801d SG |
243 | struct gfar_priv_tx_q *tx_queue = NULL; |
244 | struct gfar_priv_rx_q *rx_queue = NULL; | |
245 | ||
fba4ed03 SG |
246 | priv->total_tx_ring_size = 0; |
247 | for (i = 0; i < priv->num_tx_queues; i++) | |
248 | priv->total_tx_ring_size += priv->tx_queue[i]->tx_ring_size; | |
249 | ||
250 | priv->total_rx_ring_size = 0; | |
251 | for (i = 0; i < priv->num_rx_queues; i++) | |
252 | priv->total_rx_ring_size += priv->rx_queue[i]->rx_ring_size; | |
826aa4a0 AV |
253 | |
254 | /* Allocate memory for the buffer descriptors */ | |
8728327e | 255 | vaddr = dma_alloc_coherent(dev, |
fba4ed03 SG |
256 | sizeof(struct txbd8) * priv->total_tx_ring_size + |
257 | sizeof(struct rxbd8) * priv->total_rx_ring_size, | |
258 | &addr, GFP_KERNEL); | |
826aa4a0 AV |
259 | if (!vaddr) { |
260 | if (netif_msg_ifup(priv)) | |
261 | pr_err("%s: Could not allocate buffer descriptors!\n", | |
262 | ndev->name); | |
263 | return -ENOMEM; | |
264 | } | |
265 | ||
fba4ed03 SG |
266 | for (i = 0; i < priv->num_tx_queues; i++) { |
267 | tx_queue = priv->tx_queue[i]; | |
268 | tx_queue->tx_bd_base = (struct txbd8 *) vaddr; | |
269 | tx_queue->tx_bd_dma_base = addr; | |
270 | tx_queue->dev = ndev; | |
271 | /* enet DMA only understands physical addresses */ | |
272 | addr += sizeof(struct txbd8) *tx_queue->tx_ring_size; | |
273 | vaddr += sizeof(struct txbd8) *tx_queue->tx_ring_size; | |
274 | } | |
826aa4a0 | 275 | |
826aa4a0 | 276 | /* Start the rx descriptor ring where the tx ring leaves off */ |
fba4ed03 SG |
277 | for (i = 0; i < priv->num_rx_queues; i++) { |
278 | rx_queue = priv->rx_queue[i]; | |
279 | rx_queue->rx_bd_base = (struct rxbd8 *) vaddr; | |
280 | rx_queue->rx_bd_dma_base = addr; | |
281 | rx_queue->dev = ndev; | |
282 | addr += sizeof (struct rxbd8) * rx_queue->rx_ring_size; | |
283 | vaddr += sizeof (struct rxbd8) * rx_queue->rx_ring_size; | |
284 | } | |
826aa4a0 AV |
285 | |
286 | /* Setup the skbuff rings */ | |
fba4ed03 SG |
287 | for (i = 0; i < priv->num_tx_queues; i++) { |
288 | tx_queue = priv->tx_queue[i]; | |
289 | tx_queue->tx_skbuff = kmalloc(sizeof(*tx_queue->tx_skbuff) * | |
a12f801d | 290 | tx_queue->tx_ring_size, GFP_KERNEL); |
fba4ed03 SG |
291 | if (!tx_queue->tx_skbuff) { |
292 | if (netif_msg_ifup(priv)) | |
293 | pr_err("%s: Could not allocate tx_skbuff\n", | |
294 | ndev->name); | |
295 | goto cleanup; | |
296 | } | |
826aa4a0 | 297 | |
fba4ed03 SG |
298 | for (k = 0; k < tx_queue->tx_ring_size; k++) |
299 | tx_queue->tx_skbuff[k] = NULL; | |
300 | } | |
826aa4a0 | 301 | |
fba4ed03 SG |
302 | for (i = 0; i < priv->num_rx_queues; i++) { |
303 | rx_queue = priv->rx_queue[i]; | |
304 | rx_queue->rx_skbuff = kmalloc(sizeof(*rx_queue->rx_skbuff) * | |
a12f801d | 305 | rx_queue->rx_ring_size, GFP_KERNEL); |
826aa4a0 | 306 | |
fba4ed03 SG |
307 | if (!rx_queue->rx_skbuff) { |
308 | if (netif_msg_ifup(priv)) | |
309 | pr_err("%s: Could not allocate rx_skbuff\n", | |
310 | ndev->name); | |
311 | goto cleanup; | |
312 | } | |
313 | ||
314 | for (j = 0; j < rx_queue->rx_ring_size; j++) | |
315 | rx_queue->rx_skbuff[j] = NULL; | |
316 | } | |
826aa4a0 | 317 | |
8728327e AV |
318 | if (gfar_init_bds(ndev)) |
319 | goto cleanup; | |
826aa4a0 AV |
320 | |
321 | return 0; | |
322 | ||
323 | cleanup: | |
324 | free_skb_resources(priv); | |
325 | return -ENOMEM; | |
326 | } | |
327 | ||
fba4ed03 SG |
328 | static void gfar_init_tx_rx_base(struct gfar_private *priv) |
329 | { | |
46ceb60c | 330 | struct gfar __iomem *regs = priv->gfargrp[0].regs; |
18294ad1 | 331 | u32 __iomem *baddr; |
fba4ed03 SG |
332 | int i; |
333 | ||
334 | baddr = ®s->tbase0; | |
335 | for(i = 0; i < priv->num_tx_queues; i++) { | |
336 | gfar_write(baddr, priv->tx_queue[i]->tx_bd_dma_base); | |
337 | baddr += 2; | |
338 | } | |
339 | ||
340 | baddr = ®s->rbase0; | |
341 | for(i = 0; i < priv->num_rx_queues; i++) { | |
342 | gfar_write(baddr, priv->rx_queue[i]->rx_bd_dma_base); | |
343 | baddr += 2; | |
344 | } | |
345 | } | |
346 | ||
826aa4a0 AV |
347 | static void gfar_init_mac(struct net_device *ndev) |
348 | { | |
349 | struct gfar_private *priv = netdev_priv(ndev); | |
46ceb60c | 350 | struct gfar __iomem *regs = priv->gfargrp[0].regs; |
826aa4a0 AV |
351 | u32 rctrl = 0; |
352 | u32 tctrl = 0; | |
353 | u32 attrs = 0; | |
354 | ||
fba4ed03 SG |
355 | /* write the tx/rx base registers */ |
356 | gfar_init_tx_rx_base(priv); | |
32c513bc | 357 | |
826aa4a0 | 358 | /* Configure the coalescing support */ |
46ceb60c | 359 | gfar_configure_coalescing(priv, 0xFF, 0xFF); |
fba4ed03 | 360 | |
1ccb8389 | 361 | if (priv->rx_filer_enable) { |
fba4ed03 | 362 | rctrl |= RCTRL_FILREN; |
1ccb8389 SG |
363 | /* Program the RIR0 reg with the required distribution */ |
364 | gfar_write(®s->rir0, DEFAULT_RIR0); | |
365 | } | |
826aa4a0 AV |
366 | |
367 | if (priv->rx_csum_enable) | |
368 | rctrl |= RCTRL_CHECKSUMMING; | |
369 | ||
370 | if (priv->extended_hash) { | |
371 | rctrl |= RCTRL_EXTHASH; | |
372 | ||
373 | gfar_clear_exact_match(ndev); | |
374 | rctrl |= RCTRL_EMEN; | |
375 | } | |
376 | ||
377 | if (priv->padding) { | |
378 | rctrl &= ~RCTRL_PAL_MASK; | |
379 | rctrl |= RCTRL_PADDING(priv->padding); | |
380 | } | |
381 | ||
cc772ab7 MR |
382 | /* Insert receive time stamps into padding alignment bytes */ |
383 | if (priv->device_flags & FSL_GIANFAR_DEV_HAS_TIMER) { | |
384 | rctrl &= ~RCTRL_PAL_MASK; | |
97553f7f | 385 | rctrl |= RCTRL_PADDING(8); |
cc772ab7 MR |
386 | priv->padding = 8; |
387 | } | |
388 | ||
97553f7f MR |
389 | /* Enable HW time stamping if requested from user space */ |
390 | if (priv->hwts_rx_en) | |
391 | rctrl |= RCTRL_PRSDEP_INIT | RCTRL_TS_ENABLE; | |
392 | ||
826aa4a0 AV |
393 | /* keep vlan related bits if it's enabled */ |
394 | if (priv->vlgrp) { | |
395 | rctrl |= RCTRL_VLEX | RCTRL_PRSDEP_INIT; | |
396 | tctrl |= TCTRL_VLINS; | |
397 | } | |
398 | ||
399 | /* Init rctrl based on our settings */ | |
400 | gfar_write(®s->rctrl, rctrl); | |
401 | ||
402 | if (ndev->features & NETIF_F_IP_CSUM) | |
403 | tctrl |= TCTRL_INIT_CSUM; | |
404 | ||
fba4ed03 SG |
405 | tctrl |= TCTRL_TXSCHED_PRIO; |
406 | ||
826aa4a0 AV |
407 | gfar_write(®s->tctrl, tctrl); |
408 | ||
409 | /* Set the extraction length and index */ | |
410 | attrs = ATTRELI_EL(priv->rx_stash_size) | | |
411 | ATTRELI_EI(priv->rx_stash_index); | |
412 | ||
413 | gfar_write(®s->attreli, attrs); | |
414 | ||
415 | /* Start with defaults, and add stashing or locking | |
416 | * depending on the approprate variables */ | |
417 | attrs = ATTR_INIT_SETTINGS; | |
418 | ||
419 | if (priv->bd_stash_en) | |
420 | attrs |= ATTR_BDSTASH; | |
421 | ||
422 | if (priv->rx_stash_size != 0) | |
423 | attrs |= ATTR_BUFSTASH; | |
424 | ||
425 | gfar_write(®s->attr, attrs); | |
426 | ||
427 | gfar_write(®s->fifo_tx_thr, priv->fifo_threshold); | |
428 | gfar_write(®s->fifo_tx_starve, priv->fifo_starve); | |
429 | gfar_write(®s->fifo_tx_starve_shutoff, priv->fifo_starve_off); | |
430 | } | |
431 | ||
a7f38041 SG |
432 | static struct net_device_stats *gfar_get_stats(struct net_device *dev) |
433 | { | |
434 | struct gfar_private *priv = netdev_priv(dev); | |
435 | struct netdev_queue *txq; | |
436 | unsigned long rx_packets = 0, rx_bytes = 0, rx_dropped = 0; | |
437 | unsigned long tx_packets = 0, tx_bytes = 0; | |
438 | int i = 0; | |
439 | ||
440 | for (i = 0; i < priv->num_rx_queues; i++) { | |
441 | rx_packets += priv->rx_queue[i]->stats.rx_packets; | |
442 | rx_bytes += priv->rx_queue[i]->stats.rx_bytes; | |
443 | rx_dropped += priv->rx_queue[i]->stats.rx_dropped; | |
444 | } | |
445 | ||
446 | dev->stats.rx_packets = rx_packets; | |
447 | dev->stats.rx_bytes = rx_bytes; | |
448 | dev->stats.rx_dropped = rx_dropped; | |
449 | ||
450 | for (i = 0; i < priv->num_tx_queues; i++) { | |
451 | txq = netdev_get_tx_queue(dev, i); | |
452 | tx_bytes += txq->tx_bytes; | |
453 | tx_packets += txq->tx_packets; | |
454 | } | |
455 | ||
456 | dev->stats.tx_bytes = tx_bytes; | |
457 | dev->stats.tx_packets = tx_packets; | |
458 | ||
459 | return &dev->stats; | |
460 | } | |
461 | ||
26ccfc37 AF |
462 | static const struct net_device_ops gfar_netdev_ops = { |
463 | .ndo_open = gfar_enet_open, | |
464 | .ndo_start_xmit = gfar_start_xmit, | |
465 | .ndo_stop = gfar_close, | |
466 | .ndo_change_mtu = gfar_change_mtu, | |
467 | .ndo_set_multicast_list = gfar_set_multi, | |
468 | .ndo_tx_timeout = gfar_timeout, | |
469 | .ndo_do_ioctl = gfar_ioctl, | |
a7f38041 | 470 | .ndo_get_stats = gfar_get_stats, |
26ccfc37 | 471 | .ndo_vlan_rx_register = gfar_vlan_rx_register, |
240c102d BH |
472 | .ndo_set_mac_address = eth_mac_addr, |
473 | .ndo_validate_addr = eth_validate_addr, | |
26ccfc37 AF |
474 | #ifdef CONFIG_NET_POLL_CONTROLLER |
475 | .ndo_poll_controller = gfar_netpoll, | |
476 | #endif | |
477 | }; | |
478 | ||
7a8b3372 SG |
479 | unsigned int ftp_rqfpr[MAX_FILER_IDX + 1]; |
480 | unsigned int ftp_rqfcr[MAX_FILER_IDX + 1]; | |
481 | ||
fba4ed03 SG |
482 | void lock_rx_qs(struct gfar_private *priv) |
483 | { | |
484 | int i = 0x0; | |
485 | ||
486 | for (i = 0; i < priv->num_rx_queues; i++) | |
487 | spin_lock(&priv->rx_queue[i]->rxlock); | |
488 | } | |
489 | ||
490 | void lock_tx_qs(struct gfar_private *priv) | |
491 | { | |
492 | int i = 0x0; | |
493 | ||
494 | for (i = 0; i < priv->num_tx_queues; i++) | |
495 | spin_lock(&priv->tx_queue[i]->txlock); | |
496 | } | |
497 | ||
498 | void unlock_rx_qs(struct gfar_private *priv) | |
499 | { | |
500 | int i = 0x0; | |
501 | ||
502 | for (i = 0; i < priv->num_rx_queues; i++) | |
503 | spin_unlock(&priv->rx_queue[i]->rxlock); | |
504 | } | |
505 | ||
506 | void unlock_tx_qs(struct gfar_private *priv) | |
507 | { | |
508 | int i = 0x0; | |
509 | ||
510 | for (i = 0; i < priv->num_tx_queues; i++) | |
511 | spin_unlock(&priv->tx_queue[i]->txlock); | |
512 | } | |
513 | ||
7f7f5316 AF |
514 | /* Returns 1 if incoming frames use an FCB */ |
515 | static inline int gfar_uses_fcb(struct gfar_private *priv) | |
0bbaf069 | 516 | { |
cc772ab7 MR |
517 | return priv->vlgrp || priv->rx_csum_enable || |
518 | (priv->device_flags & FSL_GIANFAR_DEV_HAS_TIMER); | |
0bbaf069 | 519 | } |
bb40dcbb | 520 | |
fba4ed03 SG |
521 | static void free_tx_pointers(struct gfar_private *priv) |
522 | { | |
523 | int i = 0; | |
524 | ||
525 | for (i = 0; i < priv->num_tx_queues; i++) | |
526 | kfree(priv->tx_queue[i]); | |
527 | } | |
528 | ||
529 | static void free_rx_pointers(struct gfar_private *priv) | |
530 | { | |
531 | int i = 0; | |
532 | ||
533 | for (i = 0; i < priv->num_rx_queues; i++) | |
534 | kfree(priv->rx_queue[i]); | |
535 | } | |
536 | ||
46ceb60c SG |
537 | static void unmap_group_regs(struct gfar_private *priv) |
538 | { | |
539 | int i = 0; | |
540 | ||
541 | for (i = 0; i < MAXGROUPS; i++) | |
542 | if (priv->gfargrp[i].regs) | |
543 | iounmap(priv->gfargrp[i].regs); | |
544 | } | |
545 | ||
546 | static void disable_napi(struct gfar_private *priv) | |
547 | { | |
548 | int i = 0; | |
549 | ||
550 | for (i = 0; i < priv->num_grps; i++) | |
551 | napi_disable(&priv->gfargrp[i].napi); | |
552 | } | |
553 | ||
554 | static void enable_napi(struct gfar_private *priv) | |
555 | { | |
556 | int i = 0; | |
557 | ||
558 | for (i = 0; i < priv->num_grps; i++) | |
559 | napi_enable(&priv->gfargrp[i].napi); | |
560 | } | |
561 | ||
562 | static int gfar_parse_group(struct device_node *np, | |
563 | struct gfar_private *priv, const char *model) | |
564 | { | |
565 | u32 *queue_mask; | |
46ceb60c | 566 | |
7ce97d4f | 567 | priv->gfargrp[priv->num_grps].regs = of_iomap(np, 0); |
46ceb60c SG |
568 | if (!priv->gfargrp[priv->num_grps].regs) |
569 | return -ENOMEM; | |
570 | ||
571 | priv->gfargrp[priv->num_grps].interruptTransmit = | |
572 | irq_of_parse_and_map(np, 0); | |
573 | ||
574 | /* If we aren't the FEC we have multiple interrupts */ | |
575 | if (model && strcasecmp(model, "FEC")) { | |
576 | priv->gfargrp[priv->num_grps].interruptReceive = | |
577 | irq_of_parse_and_map(np, 1); | |
578 | priv->gfargrp[priv->num_grps].interruptError = | |
579 | irq_of_parse_and_map(np,2); | |
580 | if (priv->gfargrp[priv->num_grps].interruptTransmit < 0 || | |
581 | priv->gfargrp[priv->num_grps].interruptReceive < 0 || | |
582 | priv->gfargrp[priv->num_grps].interruptError < 0) { | |
583 | return -EINVAL; | |
584 | } | |
585 | } | |
586 | ||
587 | priv->gfargrp[priv->num_grps].grp_id = priv->num_grps; | |
588 | priv->gfargrp[priv->num_grps].priv = priv; | |
589 | spin_lock_init(&priv->gfargrp[priv->num_grps].grplock); | |
590 | if(priv->mode == MQ_MG_MODE) { | |
591 | queue_mask = (u32 *)of_get_property(np, | |
592 | "fsl,rx-bit-map", NULL); | |
593 | priv->gfargrp[priv->num_grps].rx_bit_map = | |
594 | queue_mask ? *queue_mask :(DEFAULT_MAPPING >> priv->num_grps); | |
595 | queue_mask = (u32 *)of_get_property(np, | |
596 | "fsl,tx-bit-map", NULL); | |
597 | priv->gfargrp[priv->num_grps].tx_bit_map = | |
598 | queue_mask ? *queue_mask : (DEFAULT_MAPPING >> priv->num_grps); | |
599 | } else { | |
600 | priv->gfargrp[priv->num_grps].rx_bit_map = 0xFF; | |
601 | priv->gfargrp[priv->num_grps].tx_bit_map = 0xFF; | |
602 | } | |
603 | priv->num_grps++; | |
604 | ||
605 | return 0; | |
606 | } | |
607 | ||
2dc11581 | 608 | static int gfar_of_init(struct platform_device *ofdev, struct net_device **pdev) |
b31a1d8b | 609 | { |
b31a1d8b AF |
610 | const char *model; |
611 | const char *ctype; | |
612 | const void *mac_addr; | |
fba4ed03 SG |
613 | int err = 0, i; |
614 | struct net_device *dev = NULL; | |
615 | struct gfar_private *priv = NULL; | |
61c7a080 | 616 | struct device_node *np = ofdev->dev.of_node; |
46ceb60c | 617 | struct device_node *child = NULL; |
4d7902f2 AF |
618 | const u32 *stash; |
619 | const u32 *stash_len; | |
620 | const u32 *stash_idx; | |
fba4ed03 SG |
621 | unsigned int num_tx_qs, num_rx_qs; |
622 | u32 *tx_queues, *rx_queues; | |
b31a1d8b AF |
623 | |
624 | if (!np || !of_device_is_available(np)) | |
625 | return -ENODEV; | |
626 | ||
fba4ed03 SG |
627 | /* parse the num of tx and rx queues */ |
628 | tx_queues = (u32 *)of_get_property(np, "fsl,num_tx_queues", NULL); | |
629 | num_tx_qs = tx_queues ? *tx_queues : 1; | |
630 | ||
631 | if (num_tx_qs > MAX_TX_QS) { | |
632 | printk(KERN_ERR "num_tx_qs(=%d) greater than MAX_TX_QS(=%d)\n", | |
633 | num_tx_qs, MAX_TX_QS); | |
634 | printk(KERN_ERR "Cannot do alloc_etherdev, aborting\n"); | |
635 | return -EINVAL; | |
636 | } | |
637 | ||
638 | rx_queues = (u32 *)of_get_property(np, "fsl,num_rx_queues", NULL); | |
639 | num_rx_qs = rx_queues ? *rx_queues : 1; | |
640 | ||
641 | if (num_rx_qs > MAX_RX_QS) { | |
642 | printk(KERN_ERR "num_rx_qs(=%d) greater than MAX_RX_QS(=%d)\n", | |
643 | num_tx_qs, MAX_TX_QS); | |
644 | printk(KERN_ERR "Cannot do alloc_etherdev, aborting\n"); | |
645 | return -EINVAL; | |
646 | } | |
647 | ||
648 | *pdev = alloc_etherdev_mq(sizeof(*priv), num_tx_qs); | |
649 | dev = *pdev; | |
650 | if (NULL == dev) | |
651 | return -ENOMEM; | |
652 | ||
653 | priv = netdev_priv(dev); | |
61c7a080 | 654 | priv->node = ofdev->dev.of_node; |
fba4ed03 SG |
655 | priv->ndev = dev; |
656 | ||
fba4ed03 | 657 | priv->num_tx_queues = num_tx_qs; |
fe069123 | 658 | netif_set_real_num_rx_queues(dev, num_rx_qs); |
fba4ed03 | 659 | priv->num_rx_queues = num_rx_qs; |
46ceb60c | 660 | priv->num_grps = 0x0; |
b31a1d8b AF |
661 | |
662 | model = of_get_property(np, "model", NULL); | |
663 | ||
46ceb60c SG |
664 | for (i = 0; i < MAXGROUPS; i++) |
665 | priv->gfargrp[i].regs = NULL; | |
b31a1d8b | 666 | |
46ceb60c SG |
667 | /* Parse and initialize group specific information */ |
668 | if (of_device_is_compatible(np, "fsl,etsec2")) { | |
669 | priv->mode = MQ_MG_MODE; | |
670 | for_each_child_of_node(np, child) { | |
671 | err = gfar_parse_group(child, priv, model); | |
672 | if (err) | |
673 | goto err_grp_init; | |
b31a1d8b | 674 | } |
46ceb60c SG |
675 | } else { |
676 | priv->mode = SQ_SG_MODE; | |
677 | err = gfar_parse_group(np, priv, model); | |
678 | if(err) | |
679 | goto err_grp_init; | |
b31a1d8b AF |
680 | } |
681 | ||
fba4ed03 SG |
682 | for (i = 0; i < priv->num_tx_queues; i++) |
683 | priv->tx_queue[i] = NULL; | |
684 | for (i = 0; i < priv->num_rx_queues; i++) | |
685 | priv->rx_queue[i] = NULL; | |
686 | ||
687 | for (i = 0; i < priv->num_tx_queues; i++) { | |
de47f072 JP |
688 | priv->tx_queue[i] = kzalloc(sizeof(struct gfar_priv_tx_q), |
689 | GFP_KERNEL); | |
fba4ed03 SG |
690 | if (!priv->tx_queue[i]) { |
691 | err = -ENOMEM; | |
692 | goto tx_alloc_failed; | |
693 | } | |
694 | priv->tx_queue[i]->tx_skbuff = NULL; | |
695 | priv->tx_queue[i]->qindex = i; | |
696 | priv->tx_queue[i]->dev = dev; | |
697 | spin_lock_init(&(priv->tx_queue[i]->txlock)); | |
698 | } | |
699 | ||
700 | for (i = 0; i < priv->num_rx_queues; i++) { | |
de47f072 JP |
701 | priv->rx_queue[i] = kzalloc(sizeof(struct gfar_priv_rx_q), |
702 | GFP_KERNEL); | |
fba4ed03 SG |
703 | if (!priv->rx_queue[i]) { |
704 | err = -ENOMEM; | |
705 | goto rx_alloc_failed; | |
706 | } | |
707 | priv->rx_queue[i]->rx_skbuff = NULL; | |
708 | priv->rx_queue[i]->qindex = i; | |
709 | priv->rx_queue[i]->dev = dev; | |
710 | spin_lock_init(&(priv->rx_queue[i]->rxlock)); | |
711 | } | |
712 | ||
713 | ||
4d7902f2 AF |
714 | stash = of_get_property(np, "bd-stash", NULL); |
715 | ||
a12f801d | 716 | if (stash) { |
4d7902f2 AF |
717 | priv->device_flags |= FSL_GIANFAR_DEV_HAS_BD_STASHING; |
718 | priv->bd_stash_en = 1; | |
719 | } | |
720 | ||
721 | stash_len = of_get_property(np, "rx-stash-len", NULL); | |
722 | ||
723 | if (stash_len) | |
724 | priv->rx_stash_size = *stash_len; | |
725 | ||
726 | stash_idx = of_get_property(np, "rx-stash-idx", NULL); | |
727 | ||
728 | if (stash_idx) | |
729 | priv->rx_stash_index = *stash_idx; | |
730 | ||
731 | if (stash_len || stash_idx) | |
732 | priv->device_flags |= FSL_GIANFAR_DEV_HAS_BUF_STASHING; | |
733 | ||
b31a1d8b AF |
734 | mac_addr = of_get_mac_address(np); |
735 | if (mac_addr) | |
736 | memcpy(dev->dev_addr, mac_addr, MAC_ADDR_LEN); | |
737 | ||
738 | if (model && !strcasecmp(model, "TSEC")) | |
739 | priv->device_flags = | |
740 | FSL_GIANFAR_DEV_HAS_GIGABIT | | |
741 | FSL_GIANFAR_DEV_HAS_COALESCE | | |
742 | FSL_GIANFAR_DEV_HAS_RMON | | |
743 | FSL_GIANFAR_DEV_HAS_MULTI_INTR; | |
744 | if (model && !strcasecmp(model, "eTSEC")) | |
745 | priv->device_flags = | |
746 | FSL_GIANFAR_DEV_HAS_GIGABIT | | |
747 | FSL_GIANFAR_DEV_HAS_COALESCE | | |
748 | FSL_GIANFAR_DEV_HAS_RMON | | |
749 | FSL_GIANFAR_DEV_HAS_MULTI_INTR | | |
2c2db48a | 750 | FSL_GIANFAR_DEV_HAS_PADDING | |
b31a1d8b AF |
751 | FSL_GIANFAR_DEV_HAS_CSUM | |
752 | FSL_GIANFAR_DEV_HAS_VLAN | | |
753 | FSL_GIANFAR_DEV_HAS_MAGIC_PACKET | | |
97553f7f MR |
754 | FSL_GIANFAR_DEV_HAS_EXTENDED_HASH | |
755 | FSL_GIANFAR_DEV_HAS_TIMER; | |
b31a1d8b AF |
756 | |
757 | ctype = of_get_property(np, "phy-connection-type", NULL); | |
758 | ||
759 | /* We only care about rgmii-id. The rest are autodetected */ | |
760 | if (ctype && !strcmp(ctype, "rgmii-id")) | |
761 | priv->interface = PHY_INTERFACE_MODE_RGMII_ID; | |
762 | else | |
763 | priv->interface = PHY_INTERFACE_MODE_MII; | |
764 | ||
765 | if (of_get_property(np, "fsl,magic-packet", NULL)) | |
766 | priv->device_flags |= FSL_GIANFAR_DEV_HAS_MAGIC_PACKET; | |
767 | ||
fe192a49 | 768 | priv->phy_node = of_parse_phandle(np, "phy-handle", 0); |
b31a1d8b AF |
769 | |
770 | /* Find the TBI PHY. If it's not there, we don't support SGMII */ | |
fe192a49 | 771 | priv->tbi_node = of_parse_phandle(np, "tbi-handle", 0); |
b31a1d8b AF |
772 | |
773 | return 0; | |
774 | ||
fba4ed03 SG |
775 | rx_alloc_failed: |
776 | free_rx_pointers(priv); | |
777 | tx_alloc_failed: | |
778 | free_tx_pointers(priv); | |
46ceb60c SG |
779 | err_grp_init: |
780 | unmap_group_regs(priv); | |
fba4ed03 | 781 | free_netdev(dev); |
b31a1d8b AF |
782 | return err; |
783 | } | |
784 | ||
cc772ab7 MR |
785 | static int gfar_hwtstamp_ioctl(struct net_device *netdev, |
786 | struct ifreq *ifr, int cmd) | |
787 | { | |
788 | struct hwtstamp_config config; | |
789 | struct gfar_private *priv = netdev_priv(netdev); | |
790 | ||
791 | if (copy_from_user(&config, ifr->ifr_data, sizeof(config))) | |
792 | return -EFAULT; | |
793 | ||
794 | /* reserved for future extensions */ | |
795 | if (config.flags) | |
796 | return -EINVAL; | |
797 | ||
f0ee7acf MR |
798 | switch (config.tx_type) { |
799 | case HWTSTAMP_TX_OFF: | |
800 | priv->hwts_tx_en = 0; | |
801 | break; | |
802 | case HWTSTAMP_TX_ON: | |
803 | if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_TIMER)) | |
804 | return -ERANGE; | |
805 | priv->hwts_tx_en = 1; | |
806 | break; | |
807 | default: | |
cc772ab7 | 808 | return -ERANGE; |
f0ee7acf | 809 | } |
cc772ab7 MR |
810 | |
811 | switch (config.rx_filter) { | |
812 | case HWTSTAMP_FILTER_NONE: | |
97553f7f MR |
813 | if (priv->hwts_rx_en) { |
814 | stop_gfar(netdev); | |
815 | priv->hwts_rx_en = 0; | |
816 | startup_gfar(netdev); | |
817 | } | |
cc772ab7 MR |
818 | break; |
819 | default: | |
820 | if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_TIMER)) | |
821 | return -ERANGE; | |
97553f7f MR |
822 | if (!priv->hwts_rx_en) { |
823 | stop_gfar(netdev); | |
824 | priv->hwts_rx_en = 1; | |
825 | startup_gfar(netdev); | |
826 | } | |
cc772ab7 MR |
827 | config.rx_filter = HWTSTAMP_FILTER_ALL; |
828 | break; | |
829 | } | |
830 | ||
831 | return copy_to_user(ifr->ifr_data, &config, sizeof(config)) ? | |
832 | -EFAULT : 0; | |
833 | } | |
834 | ||
0faac9f7 CW |
835 | /* Ioctl MII Interface */ |
836 | static int gfar_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) | |
837 | { | |
838 | struct gfar_private *priv = netdev_priv(dev); | |
839 | ||
840 | if (!netif_running(dev)) | |
841 | return -EINVAL; | |
842 | ||
cc772ab7 MR |
843 | if (cmd == SIOCSHWTSTAMP) |
844 | return gfar_hwtstamp_ioctl(dev, rq, cmd); | |
845 | ||
0faac9f7 CW |
846 | if (!priv->phydev) |
847 | return -ENODEV; | |
848 | ||
28b04113 | 849 | return phy_mii_ioctl(priv->phydev, rq, cmd); |
0faac9f7 CW |
850 | } |
851 | ||
fba4ed03 SG |
852 | static unsigned int reverse_bitmap(unsigned int bit_map, unsigned int max_qs) |
853 | { | |
854 | unsigned int new_bit_map = 0x0; | |
855 | int mask = 0x1 << (max_qs - 1), i; | |
856 | for (i = 0; i < max_qs; i++) { | |
857 | if (bit_map & mask) | |
858 | new_bit_map = new_bit_map + (1 << i); | |
859 | mask = mask >> 0x1; | |
860 | } | |
861 | return new_bit_map; | |
862 | } | |
7a8b3372 | 863 | |
18294ad1 AV |
864 | static u32 cluster_entry_per_class(struct gfar_private *priv, u32 rqfar, |
865 | u32 class) | |
7a8b3372 SG |
866 | { |
867 | u32 rqfpr = FPR_FILER_MASK; | |
868 | u32 rqfcr = 0x0; | |
869 | ||
870 | rqfar--; | |
871 | rqfcr = RQFCR_CLE | RQFCR_PID_MASK | RQFCR_CMP_EXACT; | |
872 | ftp_rqfpr[rqfar] = rqfpr; | |
873 | ftp_rqfcr[rqfar] = rqfcr; | |
874 | gfar_write_filer(priv, rqfar, rqfcr, rqfpr); | |
875 | ||
876 | rqfar--; | |
877 | rqfcr = RQFCR_CMP_NOMATCH; | |
878 | ftp_rqfpr[rqfar] = rqfpr; | |
879 | ftp_rqfcr[rqfar] = rqfcr; | |
880 | gfar_write_filer(priv, rqfar, rqfcr, rqfpr); | |
881 | ||
882 | rqfar--; | |
883 | rqfcr = RQFCR_CMP_EXACT | RQFCR_PID_PARSE | RQFCR_CLE | RQFCR_AND; | |
884 | rqfpr = class; | |
885 | ftp_rqfcr[rqfar] = rqfcr; | |
886 | ftp_rqfpr[rqfar] = rqfpr; | |
887 | gfar_write_filer(priv, rqfar, rqfcr, rqfpr); | |
888 | ||
889 | rqfar--; | |
890 | rqfcr = RQFCR_CMP_EXACT | RQFCR_PID_MASK | RQFCR_AND; | |
891 | rqfpr = class; | |
892 | ftp_rqfcr[rqfar] = rqfcr; | |
893 | ftp_rqfpr[rqfar] = rqfpr; | |
894 | gfar_write_filer(priv, rqfar, rqfcr, rqfpr); | |
895 | ||
896 | return rqfar; | |
897 | } | |
898 | ||
899 | static void gfar_init_filer_table(struct gfar_private *priv) | |
900 | { | |
901 | int i = 0x0; | |
902 | u32 rqfar = MAX_FILER_IDX; | |
903 | u32 rqfcr = 0x0; | |
904 | u32 rqfpr = FPR_FILER_MASK; | |
905 | ||
906 | /* Default rule */ | |
907 | rqfcr = RQFCR_CMP_MATCH; | |
908 | ftp_rqfcr[rqfar] = rqfcr; | |
909 | ftp_rqfpr[rqfar] = rqfpr; | |
910 | gfar_write_filer(priv, rqfar, rqfcr, rqfpr); | |
911 | ||
912 | rqfar = cluster_entry_per_class(priv, rqfar, RQFPR_IPV6); | |
913 | rqfar = cluster_entry_per_class(priv, rqfar, RQFPR_IPV6 | RQFPR_UDP); | |
914 | rqfar = cluster_entry_per_class(priv, rqfar, RQFPR_IPV6 | RQFPR_TCP); | |
915 | rqfar = cluster_entry_per_class(priv, rqfar, RQFPR_IPV4); | |
916 | rqfar = cluster_entry_per_class(priv, rqfar, RQFPR_IPV4 | RQFPR_UDP); | |
917 | rqfar = cluster_entry_per_class(priv, rqfar, RQFPR_IPV4 | RQFPR_TCP); | |
918 | ||
85dd08eb | 919 | /* cur_filer_idx indicated the first non-masked rule */ |
7a8b3372 SG |
920 | priv->cur_filer_idx = rqfar; |
921 | ||
922 | /* Rest are masked rules */ | |
923 | rqfcr = RQFCR_CMP_NOMATCH; | |
924 | for (i = 0; i < rqfar; i++) { | |
925 | ftp_rqfcr[i] = rqfcr; | |
926 | ftp_rqfpr[i] = rqfpr; | |
927 | gfar_write_filer(priv, i, rqfcr, rqfpr); | |
928 | } | |
929 | } | |
930 | ||
7d350977 AV |
931 | static void gfar_detect_errata(struct gfar_private *priv) |
932 | { | |
933 | struct device *dev = &priv->ofdev->dev; | |
934 | unsigned int pvr = mfspr(SPRN_PVR); | |
935 | unsigned int svr = mfspr(SPRN_SVR); | |
936 | unsigned int mod = (svr >> 16) & 0xfff6; /* w/o E suffix */ | |
937 | unsigned int rev = svr & 0xffff; | |
938 | ||
939 | /* MPC8313 Rev 2.0 and higher; All MPC837x */ | |
940 | if ((pvr == 0x80850010 && mod == 0x80b0 && rev >= 0x0020) || | |
941 | (pvr == 0x80861010 && (mod & 0xfff9) == 0x80c0)) | |
942 | priv->errata |= GFAR_ERRATA_74; | |
943 | ||
deb90eac AV |
944 | /* MPC8313 and MPC837x all rev */ |
945 | if ((pvr == 0x80850010 && mod == 0x80b0) || | |
946 | (pvr == 0x80861010 && (mod & 0xfff9) == 0x80c0)) | |
947 | priv->errata |= GFAR_ERRATA_76; | |
948 | ||
511d934f AV |
949 | /* MPC8313 and MPC837x all rev */ |
950 | if ((pvr == 0x80850010 && mod == 0x80b0) || | |
951 | (pvr == 0x80861010 && (mod & 0xfff9) == 0x80c0)) | |
952 | priv->errata |= GFAR_ERRATA_A002; | |
953 | ||
7d350977 AV |
954 | if (priv->errata) |
955 | dev_info(dev, "enabled errata workarounds, flags: 0x%x\n", | |
956 | priv->errata); | |
957 | } | |
958 | ||
bb40dcbb AF |
959 | /* Set up the ethernet device structure, private data, |
960 | * and anything else we need before we start */ | |
2dc11581 | 961 | static int gfar_probe(struct platform_device *ofdev, |
b31a1d8b | 962 | const struct of_device_id *match) |
1da177e4 LT |
963 | { |
964 | u32 tempval; | |
965 | struct net_device *dev = NULL; | |
966 | struct gfar_private *priv = NULL; | |
f4983704 | 967 | struct gfar __iomem *regs = NULL; |
46ceb60c | 968 | int err = 0, i, grp_idx = 0; |
c50a5d9a | 969 | int len_devname; |
fba4ed03 | 970 | u32 rstat = 0, tstat = 0, rqueue = 0, tqueue = 0; |
46ceb60c | 971 | u32 isrg = 0; |
18294ad1 | 972 | u32 __iomem *baddr; |
1da177e4 | 973 | |
fba4ed03 | 974 | err = gfar_of_init(ofdev, &dev); |
1da177e4 | 975 | |
fba4ed03 SG |
976 | if (err) |
977 | return err; | |
1da177e4 LT |
978 | |
979 | priv = netdev_priv(dev); | |
4826857f KG |
980 | priv->ndev = dev; |
981 | priv->ofdev = ofdev; | |
61c7a080 | 982 | priv->node = ofdev->dev.of_node; |
4826857f | 983 | SET_NETDEV_DEV(dev, &ofdev->dev); |
1da177e4 | 984 | |
d87eb127 | 985 | spin_lock_init(&priv->bflock); |
ab939905 | 986 | INIT_WORK(&priv->reset_task, gfar_reset_task); |
1da177e4 | 987 | |
b31a1d8b | 988 | dev_set_drvdata(&ofdev->dev, priv); |
46ceb60c | 989 | regs = priv->gfargrp[0].regs; |
1da177e4 | 990 | |
7d350977 AV |
991 | gfar_detect_errata(priv); |
992 | ||
1da177e4 LT |
993 | /* Stop the DMA engine now, in case it was running before */ |
994 | /* (The firmware could have used it, and left it running). */ | |
257d938a | 995 | gfar_halt(dev); |
1da177e4 LT |
996 | |
997 | /* Reset MAC layer */ | |
f4983704 | 998 | gfar_write(®s->maccfg1, MACCFG1_SOFT_RESET); |
1da177e4 | 999 | |
b98ac702 AF |
1000 | /* We need to delay at least 3 TX clocks */ |
1001 | udelay(2); | |
1002 | ||
1da177e4 | 1003 | tempval = (MACCFG1_TX_FLOW | MACCFG1_RX_FLOW); |
f4983704 | 1004 | gfar_write(®s->maccfg1, tempval); |
1da177e4 LT |
1005 | |
1006 | /* Initialize MACCFG2. */ | |
7d350977 AV |
1007 | tempval = MACCFG2_INIT_SETTINGS; |
1008 | if (gfar_has_errata(priv, GFAR_ERRATA_74)) | |
1009 | tempval |= MACCFG2_HUGEFRAME | MACCFG2_LENGTHCHECK; | |
1010 | gfar_write(®s->maccfg2, tempval); | |
1da177e4 LT |
1011 | |
1012 | /* Initialize ECNTRL */ | |
f4983704 | 1013 | gfar_write(®s->ecntrl, ECNTRL_INIT_SETTINGS); |
1da177e4 | 1014 | |
1da177e4 | 1015 | /* Set the dev->base_addr to the gfar reg region */ |
f4983704 | 1016 | dev->base_addr = (unsigned long) regs; |
1da177e4 | 1017 | |
b31a1d8b | 1018 | SET_NETDEV_DEV(dev, &ofdev->dev); |
1da177e4 LT |
1019 | |
1020 | /* Fill in the dev structure */ | |
1da177e4 | 1021 | dev->watchdog_timeo = TX_TIMEOUT; |
1da177e4 | 1022 | dev->mtu = 1500; |
26ccfc37 | 1023 | dev->netdev_ops = &gfar_netdev_ops; |
0bbaf069 KG |
1024 | dev->ethtool_ops = &gfar_ethtool_ops; |
1025 | ||
fba4ed03 | 1026 | /* Register for napi ...We are registering NAPI for each grp */ |
46ceb60c SG |
1027 | for (i = 0; i < priv->num_grps; i++) |
1028 | netif_napi_add(dev, &priv->gfargrp[i].napi, gfar_poll, GFAR_DEV_WEIGHT); | |
a12f801d | 1029 | |
b31a1d8b | 1030 | if (priv->device_flags & FSL_GIANFAR_DEV_HAS_CSUM) { |
0bbaf069 | 1031 | priv->rx_csum_enable = 1; |
4669bc90 | 1032 | dev->features |= NETIF_F_IP_CSUM | NETIF_F_SG | NETIF_F_HIGHDMA; |
0bbaf069 KG |
1033 | } else |
1034 | priv->rx_csum_enable = 0; | |
1035 | ||
1036 | priv->vlgrp = NULL; | |
1da177e4 | 1037 | |
26ccfc37 | 1038 | if (priv->device_flags & FSL_GIANFAR_DEV_HAS_VLAN) |
0bbaf069 | 1039 | dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX; |
0bbaf069 | 1040 | |
b31a1d8b | 1041 | if (priv->device_flags & FSL_GIANFAR_DEV_HAS_EXTENDED_HASH) { |
0bbaf069 KG |
1042 | priv->extended_hash = 1; |
1043 | priv->hash_width = 9; | |
1044 | ||
f4983704 SG |
1045 | priv->hash_regs[0] = ®s->igaddr0; |
1046 | priv->hash_regs[1] = ®s->igaddr1; | |
1047 | priv->hash_regs[2] = ®s->igaddr2; | |
1048 | priv->hash_regs[3] = ®s->igaddr3; | |
1049 | priv->hash_regs[4] = ®s->igaddr4; | |
1050 | priv->hash_regs[5] = ®s->igaddr5; | |
1051 | priv->hash_regs[6] = ®s->igaddr6; | |
1052 | priv->hash_regs[7] = ®s->igaddr7; | |
1053 | priv->hash_regs[8] = ®s->gaddr0; | |
1054 | priv->hash_regs[9] = ®s->gaddr1; | |
1055 | priv->hash_regs[10] = ®s->gaddr2; | |
1056 | priv->hash_regs[11] = ®s->gaddr3; | |
1057 | priv->hash_regs[12] = ®s->gaddr4; | |
1058 | priv->hash_regs[13] = ®s->gaddr5; | |
1059 | priv->hash_regs[14] = ®s->gaddr6; | |
1060 | priv->hash_regs[15] = ®s->gaddr7; | |
0bbaf069 KG |
1061 | |
1062 | } else { | |
1063 | priv->extended_hash = 0; | |
1064 | priv->hash_width = 8; | |
1065 | ||
f4983704 SG |
1066 | priv->hash_regs[0] = ®s->gaddr0; |
1067 | priv->hash_regs[1] = ®s->gaddr1; | |
1068 | priv->hash_regs[2] = ®s->gaddr2; | |
1069 | priv->hash_regs[3] = ®s->gaddr3; | |
1070 | priv->hash_regs[4] = ®s->gaddr4; | |
1071 | priv->hash_regs[5] = ®s->gaddr5; | |
1072 | priv->hash_regs[6] = ®s->gaddr6; | |
1073 | priv->hash_regs[7] = ®s->gaddr7; | |
0bbaf069 KG |
1074 | } |
1075 | ||
b31a1d8b | 1076 | if (priv->device_flags & FSL_GIANFAR_DEV_HAS_PADDING) |
0bbaf069 KG |
1077 | priv->padding = DEFAULT_PADDING; |
1078 | else | |
1079 | priv->padding = 0; | |
1080 | ||
cc772ab7 MR |
1081 | if (dev->features & NETIF_F_IP_CSUM || |
1082 | priv->device_flags & FSL_GIANFAR_DEV_HAS_TIMER) | |
0bbaf069 | 1083 | dev->hard_header_len += GMAC_FCB_LEN; |
1da177e4 | 1084 | |
46ceb60c SG |
1085 | /* Program the isrg regs only if number of grps > 1 */ |
1086 | if (priv->num_grps > 1) { | |
1087 | baddr = ®s->isrg0; | |
1088 | for (i = 0; i < priv->num_grps; i++) { | |
1089 | isrg |= (priv->gfargrp[i].rx_bit_map << ISRG_SHIFT_RX); | |
1090 | isrg |= (priv->gfargrp[i].tx_bit_map << ISRG_SHIFT_TX); | |
1091 | gfar_write(baddr, isrg); | |
1092 | baddr++; | |
1093 | isrg = 0x0; | |
1094 | } | |
1095 | } | |
1096 | ||
fba4ed03 | 1097 | /* Need to reverse the bit maps as bit_map's MSB is q0 |
984b3f57 | 1098 | * but, for_each_set_bit parses from right to left, which |
fba4ed03 | 1099 | * basically reverses the queue numbers */ |
46ceb60c SG |
1100 | for (i = 0; i< priv->num_grps; i++) { |
1101 | priv->gfargrp[i].tx_bit_map = reverse_bitmap( | |
1102 | priv->gfargrp[i].tx_bit_map, MAX_TX_QS); | |
1103 | priv->gfargrp[i].rx_bit_map = reverse_bitmap( | |
1104 | priv->gfargrp[i].rx_bit_map, MAX_RX_QS); | |
1105 | } | |
1106 | ||
1107 | /* Calculate RSTAT, TSTAT, RQUEUE and TQUEUE values, | |
1108 | * also assign queues to groups */ | |
1109 | for (grp_idx = 0; grp_idx < priv->num_grps; grp_idx++) { | |
1110 | priv->gfargrp[grp_idx].num_rx_queues = 0x0; | |
984b3f57 | 1111 | for_each_set_bit(i, &priv->gfargrp[grp_idx].rx_bit_map, |
46ceb60c SG |
1112 | priv->num_rx_queues) { |
1113 | priv->gfargrp[grp_idx].num_rx_queues++; | |
1114 | priv->rx_queue[i]->grp = &priv->gfargrp[grp_idx]; | |
1115 | rstat = rstat | (RSTAT_CLEAR_RHALT >> i); | |
1116 | rqueue = rqueue | ((RQUEUE_EN0 | RQUEUE_EX0) >> i); | |
1117 | } | |
1118 | priv->gfargrp[grp_idx].num_tx_queues = 0x0; | |
984b3f57 | 1119 | for_each_set_bit(i, &priv->gfargrp[grp_idx].tx_bit_map, |
46ceb60c SG |
1120 | priv->num_tx_queues) { |
1121 | priv->gfargrp[grp_idx].num_tx_queues++; | |
1122 | priv->tx_queue[i]->grp = &priv->gfargrp[grp_idx]; | |
1123 | tstat = tstat | (TSTAT_CLEAR_THALT >> i); | |
1124 | tqueue = tqueue | (TQUEUE_EN0 >> i); | |
1125 | } | |
1126 | priv->gfargrp[grp_idx].rstat = rstat; | |
1127 | priv->gfargrp[grp_idx].tstat = tstat; | |
1128 | rstat = tstat =0; | |
fba4ed03 | 1129 | } |
fba4ed03 SG |
1130 | |
1131 | gfar_write(®s->rqueue, rqueue); | |
1132 | gfar_write(®s->tqueue, tqueue); | |
1133 | ||
1da177e4 | 1134 | priv->rx_buffer_size = DEFAULT_RX_BUFFER_SIZE; |
1da177e4 | 1135 | |
a12f801d | 1136 | /* Initializing some of the rx/tx queue level parameters */ |
fba4ed03 SG |
1137 | for (i = 0; i < priv->num_tx_queues; i++) { |
1138 | priv->tx_queue[i]->tx_ring_size = DEFAULT_TX_RING_SIZE; | |
1139 | priv->tx_queue[i]->num_txbdfree = DEFAULT_TX_RING_SIZE; | |
1140 | priv->tx_queue[i]->txcoalescing = DEFAULT_TX_COALESCE; | |
1141 | priv->tx_queue[i]->txic = DEFAULT_TXIC; | |
1142 | } | |
a12f801d | 1143 | |
fba4ed03 SG |
1144 | for (i = 0; i < priv->num_rx_queues; i++) { |
1145 | priv->rx_queue[i]->rx_ring_size = DEFAULT_RX_RING_SIZE; | |
1146 | priv->rx_queue[i]->rxcoalescing = DEFAULT_RX_COALESCE; | |
1147 | priv->rx_queue[i]->rxic = DEFAULT_RXIC; | |
1148 | } | |
1da177e4 | 1149 | |
1ccb8389 SG |
1150 | /* enable filer if using multiple RX queues*/ |
1151 | if(priv->num_rx_queues > 1) | |
1152 | priv->rx_filer_enable = 1; | |
0bbaf069 KG |
1153 | /* Enable most messages by default */ |
1154 | priv->msg_enable = (NETIF_MSG_IFUP << 1 ) - 1; | |
1155 | ||
d3eab82b TP |
1156 | /* Carrier starts down, phylib will bring it up */ |
1157 | netif_carrier_off(dev); | |
1158 | ||
1da177e4 LT |
1159 | err = register_netdev(dev); |
1160 | ||
1161 | if (err) { | |
1162 | printk(KERN_ERR "%s: Cannot register net device, aborting.\n", | |
1163 | dev->name); | |
1164 | goto register_fail; | |
1165 | } | |
1166 | ||
2884e5cc AV |
1167 | device_init_wakeup(&dev->dev, |
1168 | priv->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET); | |
1169 | ||
c50a5d9a DH |
1170 | /* fill out IRQ number and name fields */ |
1171 | len_devname = strlen(dev->name); | |
46ceb60c SG |
1172 | for (i = 0; i < priv->num_grps; i++) { |
1173 | strncpy(&priv->gfargrp[i].int_name_tx[0], dev->name, | |
1174 | len_devname); | |
1175 | if (priv->device_flags & FSL_GIANFAR_DEV_HAS_MULTI_INTR) { | |
1176 | strncpy(&priv->gfargrp[i].int_name_tx[len_devname], | |
1177 | "_g", sizeof("_g")); | |
1178 | priv->gfargrp[i].int_name_tx[ | |
1179 | strlen(priv->gfargrp[i].int_name_tx)] = i+48; | |
1180 | strncpy(&priv->gfargrp[i].int_name_tx[strlen( | |
1181 | priv->gfargrp[i].int_name_tx)], | |
1182 | "_tx", sizeof("_tx") + 1); | |
1183 | ||
1184 | strncpy(&priv->gfargrp[i].int_name_rx[0], dev->name, | |
1185 | len_devname); | |
1186 | strncpy(&priv->gfargrp[i].int_name_rx[len_devname], | |
1187 | "_g", sizeof("_g")); | |
1188 | priv->gfargrp[i].int_name_rx[ | |
1189 | strlen(priv->gfargrp[i].int_name_rx)] = i+48; | |
1190 | strncpy(&priv->gfargrp[i].int_name_rx[strlen( | |
1191 | priv->gfargrp[i].int_name_rx)], | |
1192 | "_rx", sizeof("_rx") + 1); | |
1193 | ||
1194 | strncpy(&priv->gfargrp[i].int_name_er[0], dev->name, | |
1195 | len_devname); | |
1196 | strncpy(&priv->gfargrp[i].int_name_er[len_devname], | |
1197 | "_g", sizeof("_g")); | |
1198 | priv->gfargrp[i].int_name_er[strlen( | |
1199 | priv->gfargrp[i].int_name_er)] = i+48; | |
1200 | strncpy(&priv->gfargrp[i].int_name_er[strlen(\ | |
1201 | priv->gfargrp[i].int_name_er)], | |
1202 | "_er", sizeof("_er") + 1); | |
1203 | } else | |
1204 | priv->gfargrp[i].int_name_tx[len_devname] = '\0'; | |
1205 | } | |
c50a5d9a | 1206 | |
7a8b3372 SG |
1207 | /* Initialize the filer table */ |
1208 | gfar_init_filer_table(priv); | |
1209 | ||
7f7f5316 AF |
1210 | /* Create all the sysfs files */ |
1211 | gfar_init_sysfs(dev); | |
1212 | ||
1da177e4 | 1213 | /* Print out the device info */ |
e174961c | 1214 | printk(KERN_INFO DEVICE_NAME "%pM\n", dev->name, dev->dev_addr); |
1da177e4 LT |
1215 | |
1216 | /* Even more device info helps when determining which kernel */ | |
7f7f5316 | 1217 | /* provided which set of benchmarks. */ |
1da177e4 | 1218 | printk(KERN_INFO "%s: Running with NAPI enabled\n", dev->name); |
fba4ed03 | 1219 | for (i = 0; i < priv->num_rx_queues; i++) |
ddc01b3b | 1220 | printk(KERN_INFO "%s: RX BD ring size for Q[%d]: %d\n", |
fba4ed03 SG |
1221 | dev->name, i, priv->rx_queue[i]->rx_ring_size); |
1222 | for(i = 0; i < priv->num_tx_queues; i++) | |
ddc01b3b | 1223 | printk(KERN_INFO "%s: TX BD ring size for Q[%d]: %d\n", |
fba4ed03 | 1224 | dev->name, i, priv->tx_queue[i]->tx_ring_size); |
1da177e4 LT |
1225 | |
1226 | return 0; | |
1227 | ||
1228 | register_fail: | |
46ceb60c | 1229 | unmap_group_regs(priv); |
fba4ed03 SG |
1230 | free_tx_pointers(priv); |
1231 | free_rx_pointers(priv); | |
fe192a49 GL |
1232 | if (priv->phy_node) |
1233 | of_node_put(priv->phy_node); | |
1234 | if (priv->tbi_node) | |
1235 | of_node_put(priv->tbi_node); | |
1da177e4 | 1236 | free_netdev(dev); |
bb40dcbb | 1237 | return err; |
1da177e4 LT |
1238 | } |
1239 | ||
2dc11581 | 1240 | static int gfar_remove(struct platform_device *ofdev) |
1da177e4 | 1241 | { |
b31a1d8b | 1242 | struct gfar_private *priv = dev_get_drvdata(&ofdev->dev); |
1da177e4 | 1243 | |
fe192a49 GL |
1244 | if (priv->phy_node) |
1245 | of_node_put(priv->phy_node); | |
1246 | if (priv->tbi_node) | |
1247 | of_node_put(priv->tbi_node); | |
1248 | ||
b31a1d8b | 1249 | dev_set_drvdata(&ofdev->dev, NULL); |
1da177e4 | 1250 | |
d9d8e041 | 1251 | unregister_netdev(priv->ndev); |
46ceb60c | 1252 | unmap_group_regs(priv); |
4826857f | 1253 | free_netdev(priv->ndev); |
1da177e4 LT |
1254 | |
1255 | return 0; | |
1256 | } | |
1257 | ||
d87eb127 | 1258 | #ifdef CONFIG_PM |
be926fc4 AV |
1259 | |
1260 | static int gfar_suspend(struct device *dev) | |
d87eb127 | 1261 | { |
be926fc4 AV |
1262 | struct gfar_private *priv = dev_get_drvdata(dev); |
1263 | struct net_device *ndev = priv->ndev; | |
46ceb60c | 1264 | struct gfar __iomem *regs = priv->gfargrp[0].regs; |
d87eb127 SW |
1265 | unsigned long flags; |
1266 | u32 tempval; | |
1267 | ||
1268 | int magic_packet = priv->wol_en && | |
b31a1d8b | 1269 | (priv->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET); |
d87eb127 | 1270 | |
be926fc4 | 1271 | netif_device_detach(ndev); |
d87eb127 | 1272 | |
be926fc4 | 1273 | if (netif_running(ndev)) { |
fba4ed03 SG |
1274 | |
1275 | local_irq_save(flags); | |
1276 | lock_tx_qs(priv); | |
1277 | lock_rx_qs(priv); | |
d87eb127 | 1278 | |
be926fc4 | 1279 | gfar_halt_nodisable(ndev); |
d87eb127 SW |
1280 | |
1281 | /* Disable Tx, and Rx if wake-on-LAN is disabled. */ | |
f4983704 | 1282 | tempval = gfar_read(®s->maccfg1); |
d87eb127 SW |
1283 | |
1284 | tempval &= ~MACCFG1_TX_EN; | |
1285 | ||
1286 | if (!magic_packet) | |
1287 | tempval &= ~MACCFG1_RX_EN; | |
1288 | ||
f4983704 | 1289 | gfar_write(®s->maccfg1, tempval); |
d87eb127 | 1290 | |
fba4ed03 SG |
1291 | unlock_rx_qs(priv); |
1292 | unlock_tx_qs(priv); | |
1293 | local_irq_restore(flags); | |
d87eb127 | 1294 | |
46ceb60c | 1295 | disable_napi(priv); |
d87eb127 SW |
1296 | |
1297 | if (magic_packet) { | |
1298 | /* Enable interrupt on Magic Packet */ | |
f4983704 | 1299 | gfar_write(®s->imask, IMASK_MAG); |
d87eb127 SW |
1300 | |
1301 | /* Enable Magic Packet mode */ | |
f4983704 | 1302 | tempval = gfar_read(®s->maccfg2); |
d87eb127 | 1303 | tempval |= MACCFG2_MPEN; |
f4983704 | 1304 | gfar_write(®s->maccfg2, tempval); |
d87eb127 SW |
1305 | } else { |
1306 | phy_stop(priv->phydev); | |
1307 | } | |
1308 | } | |
1309 | ||
1310 | return 0; | |
1311 | } | |
1312 | ||
be926fc4 | 1313 | static int gfar_resume(struct device *dev) |
d87eb127 | 1314 | { |
be926fc4 AV |
1315 | struct gfar_private *priv = dev_get_drvdata(dev); |
1316 | struct net_device *ndev = priv->ndev; | |
46ceb60c | 1317 | struct gfar __iomem *regs = priv->gfargrp[0].regs; |
d87eb127 SW |
1318 | unsigned long flags; |
1319 | u32 tempval; | |
1320 | int magic_packet = priv->wol_en && | |
b31a1d8b | 1321 | (priv->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET); |
d87eb127 | 1322 | |
be926fc4 AV |
1323 | if (!netif_running(ndev)) { |
1324 | netif_device_attach(ndev); | |
d87eb127 SW |
1325 | return 0; |
1326 | } | |
1327 | ||
1328 | if (!magic_packet && priv->phydev) | |
1329 | phy_start(priv->phydev); | |
1330 | ||
1331 | /* Disable Magic Packet mode, in case something | |
1332 | * else woke us up. | |
1333 | */ | |
fba4ed03 SG |
1334 | local_irq_save(flags); |
1335 | lock_tx_qs(priv); | |
1336 | lock_rx_qs(priv); | |
d87eb127 | 1337 | |
f4983704 | 1338 | tempval = gfar_read(®s->maccfg2); |
d87eb127 | 1339 | tempval &= ~MACCFG2_MPEN; |
f4983704 | 1340 | gfar_write(®s->maccfg2, tempval); |
d87eb127 | 1341 | |
be926fc4 | 1342 | gfar_start(ndev); |
d87eb127 | 1343 | |
fba4ed03 SG |
1344 | unlock_rx_qs(priv); |
1345 | unlock_tx_qs(priv); | |
1346 | local_irq_restore(flags); | |
d87eb127 | 1347 | |
be926fc4 AV |
1348 | netif_device_attach(ndev); |
1349 | ||
46ceb60c | 1350 | enable_napi(priv); |
be926fc4 AV |
1351 | |
1352 | return 0; | |
1353 | } | |
1354 | ||
1355 | static int gfar_restore(struct device *dev) | |
1356 | { | |
1357 | struct gfar_private *priv = dev_get_drvdata(dev); | |
1358 | struct net_device *ndev = priv->ndev; | |
1359 | ||
1360 | if (!netif_running(ndev)) | |
1361 | return 0; | |
1362 | ||
1363 | gfar_init_bds(ndev); | |
1364 | init_registers(ndev); | |
1365 | gfar_set_mac_address(ndev); | |
1366 | gfar_init_mac(ndev); | |
1367 | gfar_start(ndev); | |
1368 | ||
1369 | priv->oldlink = 0; | |
1370 | priv->oldspeed = 0; | |
1371 | priv->oldduplex = -1; | |
1372 | ||
1373 | if (priv->phydev) | |
1374 | phy_start(priv->phydev); | |
d87eb127 | 1375 | |
be926fc4 | 1376 | netif_device_attach(ndev); |
5ea681d4 | 1377 | enable_napi(priv); |
d87eb127 SW |
1378 | |
1379 | return 0; | |
1380 | } | |
be926fc4 AV |
1381 | |
1382 | static struct dev_pm_ops gfar_pm_ops = { | |
1383 | .suspend = gfar_suspend, | |
1384 | .resume = gfar_resume, | |
1385 | .freeze = gfar_suspend, | |
1386 | .thaw = gfar_resume, | |
1387 | .restore = gfar_restore, | |
1388 | }; | |
1389 | ||
1390 | #define GFAR_PM_OPS (&gfar_pm_ops) | |
1391 | ||
d87eb127 | 1392 | #else |
be926fc4 AV |
1393 | |
1394 | #define GFAR_PM_OPS NULL | |
be926fc4 | 1395 | |
d87eb127 | 1396 | #endif |
1da177e4 | 1397 | |
e8a2b6a4 AF |
1398 | /* Reads the controller's registers to determine what interface |
1399 | * connects it to the PHY. | |
1400 | */ | |
1401 | static phy_interface_t gfar_get_interface(struct net_device *dev) | |
1402 | { | |
1403 | struct gfar_private *priv = netdev_priv(dev); | |
46ceb60c | 1404 | struct gfar __iomem *regs = priv->gfargrp[0].regs; |
f4983704 SG |
1405 | u32 ecntrl; |
1406 | ||
f4983704 | 1407 | ecntrl = gfar_read(®s->ecntrl); |
e8a2b6a4 AF |
1408 | |
1409 | if (ecntrl & ECNTRL_SGMII_MODE) | |
1410 | return PHY_INTERFACE_MODE_SGMII; | |
1411 | ||
1412 | if (ecntrl & ECNTRL_TBI_MODE) { | |
1413 | if (ecntrl & ECNTRL_REDUCED_MODE) | |
1414 | return PHY_INTERFACE_MODE_RTBI; | |
1415 | else | |
1416 | return PHY_INTERFACE_MODE_TBI; | |
1417 | } | |
1418 | ||
1419 | if (ecntrl & ECNTRL_REDUCED_MODE) { | |
1420 | if (ecntrl & ECNTRL_REDUCED_MII_MODE) | |
1421 | return PHY_INTERFACE_MODE_RMII; | |
7132ab7f | 1422 | else { |
b31a1d8b | 1423 | phy_interface_t interface = priv->interface; |
7132ab7f AF |
1424 | |
1425 | /* | |
1426 | * This isn't autodetected right now, so it must | |
1427 | * be set by the device tree or platform code. | |
1428 | */ | |
1429 | if (interface == PHY_INTERFACE_MODE_RGMII_ID) | |
1430 | return PHY_INTERFACE_MODE_RGMII_ID; | |
1431 | ||
e8a2b6a4 | 1432 | return PHY_INTERFACE_MODE_RGMII; |
7132ab7f | 1433 | } |
e8a2b6a4 AF |
1434 | } |
1435 | ||
b31a1d8b | 1436 | if (priv->device_flags & FSL_GIANFAR_DEV_HAS_GIGABIT) |
e8a2b6a4 AF |
1437 | return PHY_INTERFACE_MODE_GMII; |
1438 | ||
1439 | return PHY_INTERFACE_MODE_MII; | |
1440 | } | |
1441 | ||
1442 | ||
bb40dcbb AF |
1443 | /* Initializes driver's PHY state, and attaches to the PHY. |
1444 | * Returns 0 on success. | |
1da177e4 LT |
1445 | */ |
1446 | static int init_phy(struct net_device *dev) | |
1447 | { | |
1448 | struct gfar_private *priv = netdev_priv(dev); | |
bb40dcbb | 1449 | uint gigabit_support = |
b31a1d8b | 1450 | priv->device_flags & FSL_GIANFAR_DEV_HAS_GIGABIT ? |
bb40dcbb | 1451 | SUPPORTED_1000baseT_Full : 0; |
e8a2b6a4 | 1452 | phy_interface_t interface; |
1da177e4 LT |
1453 | |
1454 | priv->oldlink = 0; | |
1455 | priv->oldspeed = 0; | |
1456 | priv->oldduplex = -1; | |
1457 | ||
e8a2b6a4 AF |
1458 | interface = gfar_get_interface(dev); |
1459 | ||
1db780f8 AV |
1460 | priv->phydev = of_phy_connect(dev, priv->phy_node, &adjust_link, 0, |
1461 | interface); | |
1462 | if (!priv->phydev) | |
1463 | priv->phydev = of_phy_connect_fixed_link(dev, &adjust_link, | |
1464 | interface); | |
1465 | if (!priv->phydev) { | |
1466 | dev_err(&dev->dev, "could not attach to PHY\n"); | |
1467 | return -ENODEV; | |
fe192a49 | 1468 | } |
1da177e4 | 1469 | |
d3c12873 KJ |
1470 | if (interface == PHY_INTERFACE_MODE_SGMII) |
1471 | gfar_configure_serdes(dev); | |
1472 | ||
bb40dcbb | 1473 | /* Remove any features not supported by the controller */ |
fe192a49 GL |
1474 | priv->phydev->supported &= (GFAR_SUPPORTED | gigabit_support); |
1475 | priv->phydev->advertising = priv->phydev->supported; | |
1da177e4 LT |
1476 | |
1477 | return 0; | |
1da177e4 LT |
1478 | } |
1479 | ||
d0313587 PG |
1480 | /* |
1481 | * Initialize TBI PHY interface for communicating with the | |
1482 | * SERDES lynx PHY on the chip. We communicate with this PHY | |
1483 | * through the MDIO bus on each controller, treating it as a | |
1484 | * "normal" PHY at the address found in the TBIPA register. We assume | |
1485 | * that the TBIPA register is valid. Either the MDIO bus code will set | |
1486 | * it to a value that doesn't conflict with other PHYs on the bus, or the | |
1487 | * value doesn't matter, as there are no other PHYs on the bus. | |
1488 | */ | |
d3c12873 KJ |
1489 | static void gfar_configure_serdes(struct net_device *dev) |
1490 | { | |
1491 | struct gfar_private *priv = netdev_priv(dev); | |
fe192a49 GL |
1492 | struct phy_device *tbiphy; |
1493 | ||
1494 | if (!priv->tbi_node) { | |
1495 | dev_warn(&dev->dev, "error: SGMII mode requires that the " | |
1496 | "device tree specify a tbi-handle\n"); | |
1497 | return; | |
1498 | } | |
c132419e | 1499 | |
fe192a49 GL |
1500 | tbiphy = of_phy_find_device(priv->tbi_node); |
1501 | if (!tbiphy) { | |
1502 | dev_err(&dev->dev, "error: Could not get TBI device\n"); | |
b31a1d8b AF |
1503 | return; |
1504 | } | |
d3c12873 | 1505 | |
b31a1d8b AF |
1506 | /* |
1507 | * If the link is already up, we must already be ok, and don't need to | |
bdb59f94 TP |
1508 | * configure and reset the TBI<->SerDes link. Maybe U-Boot configured |
1509 | * everything for us? Resetting it takes the link down and requires | |
1510 | * several seconds for it to come back. | |
1511 | */ | |
fe192a49 | 1512 | if (phy_read(tbiphy, MII_BMSR) & BMSR_LSTATUS) |
b31a1d8b | 1513 | return; |
d3c12873 | 1514 | |
d0313587 | 1515 | /* Single clk mode, mii mode off(for serdes communication) */ |
fe192a49 | 1516 | phy_write(tbiphy, MII_TBICON, TBICON_CLK_SELECT); |
d3c12873 | 1517 | |
fe192a49 | 1518 | phy_write(tbiphy, MII_ADVERTISE, |
d3c12873 KJ |
1519 | ADVERTISE_1000XFULL | ADVERTISE_1000XPAUSE | |
1520 | ADVERTISE_1000XPSE_ASYM); | |
1521 | ||
fe192a49 | 1522 | phy_write(tbiphy, MII_BMCR, BMCR_ANENABLE | |
d3c12873 KJ |
1523 | BMCR_ANRESTART | BMCR_FULLDPLX | BMCR_SPEED1000); |
1524 | } | |
1525 | ||
1da177e4 LT |
1526 | static void init_registers(struct net_device *dev) |
1527 | { | |
1528 | struct gfar_private *priv = netdev_priv(dev); | |
f4983704 | 1529 | struct gfar __iomem *regs = NULL; |
46ceb60c | 1530 | int i = 0; |
1da177e4 | 1531 | |
46ceb60c SG |
1532 | for (i = 0; i < priv->num_grps; i++) { |
1533 | regs = priv->gfargrp[i].regs; | |
1534 | /* Clear IEVENT */ | |
1535 | gfar_write(®s->ievent, IEVENT_INIT_CLEAR); | |
1da177e4 | 1536 | |
46ceb60c SG |
1537 | /* Initialize IMASK */ |
1538 | gfar_write(®s->imask, IMASK_INIT_CLEAR); | |
1539 | } | |
1da177e4 | 1540 | |
46ceb60c | 1541 | regs = priv->gfargrp[0].regs; |
1da177e4 | 1542 | /* Init hash registers to zero */ |
f4983704 SG |
1543 | gfar_write(®s->igaddr0, 0); |
1544 | gfar_write(®s->igaddr1, 0); | |
1545 | gfar_write(®s->igaddr2, 0); | |
1546 | gfar_write(®s->igaddr3, 0); | |
1547 | gfar_write(®s->igaddr4, 0); | |
1548 | gfar_write(®s->igaddr5, 0); | |
1549 | gfar_write(®s->igaddr6, 0); | |
1550 | gfar_write(®s->igaddr7, 0); | |
1551 | ||
1552 | gfar_write(®s->gaddr0, 0); | |
1553 | gfar_write(®s->gaddr1, 0); | |
1554 | gfar_write(®s->gaddr2, 0); | |
1555 | gfar_write(®s->gaddr3, 0); | |
1556 | gfar_write(®s->gaddr4, 0); | |
1557 | gfar_write(®s->gaddr5, 0); | |
1558 | gfar_write(®s->gaddr6, 0); | |
1559 | gfar_write(®s->gaddr7, 0); | |
1da177e4 | 1560 | |
1da177e4 | 1561 | /* Zero out the rmon mib registers if it has them */ |
b31a1d8b | 1562 | if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON) { |
f4983704 | 1563 | memset_io(&(regs->rmon), 0, sizeof (struct rmon_mib)); |
1da177e4 LT |
1564 | |
1565 | /* Mask off the CAM interrupts */ | |
f4983704 SG |
1566 | gfar_write(®s->rmon.cam1, 0xffffffff); |
1567 | gfar_write(®s->rmon.cam2, 0xffffffff); | |
1da177e4 LT |
1568 | } |
1569 | ||
1570 | /* Initialize the max receive buffer length */ | |
f4983704 | 1571 | gfar_write(®s->mrblr, priv->rx_buffer_size); |
1da177e4 | 1572 | |
1da177e4 | 1573 | /* Initialize the Minimum Frame Length Register */ |
f4983704 | 1574 | gfar_write(®s->minflr, MINFLR_INIT_SETTINGS); |
1da177e4 LT |
1575 | } |
1576 | ||
511d934f AV |
1577 | static int __gfar_is_rx_idle(struct gfar_private *priv) |
1578 | { | |
1579 | u32 res; | |
1580 | ||
1581 | /* | |
1582 | * Normaly TSEC should not hang on GRS commands, so we should | |
1583 | * actually wait for IEVENT_GRSC flag. | |
1584 | */ | |
1585 | if (likely(!gfar_has_errata(priv, GFAR_ERRATA_A002))) | |
1586 | return 0; | |
1587 | ||
1588 | /* | |
1589 | * Read the eTSEC register at offset 0xD1C. If bits 7-14 are | |
1590 | * the same as bits 23-30, the eTSEC Rx is assumed to be idle | |
1591 | * and the Rx can be safely reset. | |
1592 | */ | |
1593 | res = gfar_read((void __iomem *)priv->gfargrp[0].regs + 0xd1c); | |
1594 | res &= 0x7f807f80; | |
1595 | if ((res & 0xffff) == (res >> 16)) | |
1596 | return 1; | |
1597 | ||
1598 | return 0; | |
1599 | } | |
0bbaf069 KG |
1600 | |
1601 | /* Halt the receive and transmit queues */ | |
d87eb127 | 1602 | static void gfar_halt_nodisable(struct net_device *dev) |
1da177e4 LT |
1603 | { |
1604 | struct gfar_private *priv = netdev_priv(dev); | |
46ceb60c | 1605 | struct gfar __iomem *regs = NULL; |
1da177e4 | 1606 | u32 tempval; |
46ceb60c | 1607 | int i = 0; |
1da177e4 | 1608 | |
46ceb60c SG |
1609 | for (i = 0; i < priv->num_grps; i++) { |
1610 | regs = priv->gfargrp[i].regs; | |
1611 | /* Mask all interrupts */ | |
1612 | gfar_write(®s->imask, IMASK_INIT_CLEAR); | |
1da177e4 | 1613 | |
46ceb60c SG |
1614 | /* Clear all interrupts */ |
1615 | gfar_write(®s->ievent, IEVENT_INIT_CLEAR); | |
1616 | } | |
1da177e4 | 1617 | |
46ceb60c | 1618 | regs = priv->gfargrp[0].regs; |
1da177e4 | 1619 | /* Stop the DMA, and wait for it to stop */ |
f4983704 | 1620 | tempval = gfar_read(®s->dmactrl); |
1da177e4 LT |
1621 | if ((tempval & (DMACTRL_GRS | DMACTRL_GTS)) |
1622 | != (DMACTRL_GRS | DMACTRL_GTS)) { | |
511d934f AV |
1623 | int ret; |
1624 | ||
1da177e4 | 1625 | tempval |= (DMACTRL_GRS | DMACTRL_GTS); |
f4983704 | 1626 | gfar_write(®s->dmactrl, tempval); |
1da177e4 | 1627 | |
511d934f AV |
1628 | do { |
1629 | ret = spin_event_timeout(((gfar_read(®s->ievent) & | |
1630 | (IEVENT_GRSC | IEVENT_GTSC)) == | |
1631 | (IEVENT_GRSC | IEVENT_GTSC)), 1000000, 0); | |
1632 | if (!ret && !(gfar_read(®s->ievent) & IEVENT_GRSC)) | |
1633 | ret = __gfar_is_rx_idle(priv); | |
1634 | } while (!ret); | |
1da177e4 | 1635 | } |
d87eb127 | 1636 | } |
d87eb127 SW |
1637 | |
1638 | /* Halt the receive and transmit queues */ | |
1639 | void gfar_halt(struct net_device *dev) | |
1640 | { | |
1641 | struct gfar_private *priv = netdev_priv(dev); | |
46ceb60c | 1642 | struct gfar __iomem *regs = priv->gfargrp[0].regs; |
d87eb127 | 1643 | u32 tempval; |
1da177e4 | 1644 | |
2a54adc3 SW |
1645 | gfar_halt_nodisable(dev); |
1646 | ||
1da177e4 LT |
1647 | /* Disable Rx and Tx */ |
1648 | tempval = gfar_read(®s->maccfg1); | |
1649 | tempval &= ~(MACCFG1_RX_EN | MACCFG1_TX_EN); | |
1650 | gfar_write(®s->maccfg1, tempval); | |
0bbaf069 KG |
1651 | } |
1652 | ||
46ceb60c SG |
1653 | static void free_grp_irqs(struct gfar_priv_grp *grp) |
1654 | { | |
1655 | free_irq(grp->interruptError, grp); | |
1656 | free_irq(grp->interruptTransmit, grp); | |
1657 | free_irq(grp->interruptReceive, grp); | |
1658 | } | |
1659 | ||
0bbaf069 KG |
1660 | void stop_gfar(struct net_device *dev) |
1661 | { | |
1662 | struct gfar_private *priv = netdev_priv(dev); | |
0bbaf069 | 1663 | unsigned long flags; |
46ceb60c | 1664 | int i; |
0bbaf069 | 1665 | |
bb40dcbb AF |
1666 | phy_stop(priv->phydev); |
1667 | ||
a12f801d | 1668 | |
0bbaf069 | 1669 | /* Lock it down */ |
fba4ed03 SG |
1670 | local_irq_save(flags); |
1671 | lock_tx_qs(priv); | |
1672 | lock_rx_qs(priv); | |
0bbaf069 | 1673 | |
0bbaf069 | 1674 | gfar_halt(dev); |
1da177e4 | 1675 | |
fba4ed03 SG |
1676 | unlock_rx_qs(priv); |
1677 | unlock_tx_qs(priv); | |
1678 | local_irq_restore(flags); | |
1da177e4 LT |
1679 | |
1680 | /* Free the IRQs */ | |
b31a1d8b | 1681 | if (priv->device_flags & FSL_GIANFAR_DEV_HAS_MULTI_INTR) { |
46ceb60c SG |
1682 | for (i = 0; i < priv->num_grps; i++) |
1683 | free_grp_irqs(&priv->gfargrp[i]); | |
1da177e4 | 1684 | } else { |
46ceb60c SG |
1685 | for (i = 0; i < priv->num_grps; i++) |
1686 | free_irq(priv->gfargrp[i].interruptTransmit, | |
1687 | &priv->gfargrp[i]); | |
1da177e4 LT |
1688 | } |
1689 | ||
1690 | free_skb_resources(priv); | |
1da177e4 LT |
1691 | } |
1692 | ||
fba4ed03 | 1693 | static void free_skb_tx_queue(struct gfar_priv_tx_q *tx_queue) |
1da177e4 | 1694 | { |
1da177e4 | 1695 | struct txbd8 *txbdp; |
fba4ed03 | 1696 | struct gfar_private *priv = netdev_priv(tx_queue->dev); |
4669bc90 | 1697 | int i, j; |
1da177e4 | 1698 | |
a12f801d | 1699 | txbdp = tx_queue->tx_bd_base; |
1da177e4 | 1700 | |
a12f801d SG |
1701 | for (i = 0; i < tx_queue->tx_ring_size; i++) { |
1702 | if (!tx_queue->tx_skbuff[i]) | |
4669bc90 | 1703 | continue; |
1da177e4 | 1704 | |
4826857f | 1705 | dma_unmap_single(&priv->ofdev->dev, txbdp->bufPtr, |
4669bc90 DH |
1706 | txbdp->length, DMA_TO_DEVICE); |
1707 | txbdp->lstatus = 0; | |
fba4ed03 SG |
1708 | for (j = 0; j < skb_shinfo(tx_queue->tx_skbuff[i])->nr_frags; |
1709 | j++) { | |
4669bc90 | 1710 | txbdp++; |
4826857f | 1711 | dma_unmap_page(&priv->ofdev->dev, txbdp->bufPtr, |
4669bc90 | 1712 | txbdp->length, DMA_TO_DEVICE); |
1da177e4 | 1713 | } |
ad5da7ab | 1714 | txbdp++; |
a12f801d SG |
1715 | dev_kfree_skb_any(tx_queue->tx_skbuff[i]); |
1716 | tx_queue->tx_skbuff[i] = NULL; | |
1da177e4 | 1717 | } |
a12f801d | 1718 | kfree(tx_queue->tx_skbuff); |
fba4ed03 | 1719 | } |
1da177e4 | 1720 | |
fba4ed03 SG |
1721 | static void free_skb_rx_queue(struct gfar_priv_rx_q *rx_queue) |
1722 | { | |
1723 | struct rxbd8 *rxbdp; | |
1724 | struct gfar_private *priv = netdev_priv(rx_queue->dev); | |
1725 | int i; | |
1da177e4 | 1726 | |
fba4ed03 | 1727 | rxbdp = rx_queue->rx_bd_base; |
1da177e4 | 1728 | |
a12f801d SG |
1729 | for (i = 0; i < rx_queue->rx_ring_size; i++) { |
1730 | if (rx_queue->rx_skbuff[i]) { | |
fba4ed03 SG |
1731 | dma_unmap_single(&priv->ofdev->dev, |
1732 | rxbdp->bufPtr, priv->rx_buffer_size, | |
e69edd21 | 1733 | DMA_FROM_DEVICE); |
a12f801d SG |
1734 | dev_kfree_skb_any(rx_queue->rx_skbuff[i]); |
1735 | rx_queue->rx_skbuff[i] = NULL; | |
1da177e4 | 1736 | } |
e69edd21 AV |
1737 | rxbdp->lstatus = 0; |
1738 | rxbdp->bufPtr = 0; | |
1739 | rxbdp++; | |
1da177e4 | 1740 | } |
a12f801d | 1741 | kfree(rx_queue->rx_skbuff); |
fba4ed03 | 1742 | } |
e69edd21 | 1743 | |
fba4ed03 SG |
1744 | /* If there are any tx skbs or rx skbs still around, free them. |
1745 | * Then free tx_skbuff and rx_skbuff */ | |
1746 | static void free_skb_resources(struct gfar_private *priv) | |
1747 | { | |
1748 | struct gfar_priv_tx_q *tx_queue = NULL; | |
1749 | struct gfar_priv_rx_q *rx_queue = NULL; | |
1750 | int i; | |
1751 | ||
1752 | /* Go through all the buffer descriptors and free their data buffers */ | |
1753 | for (i = 0; i < priv->num_tx_queues; i++) { | |
1754 | tx_queue = priv->tx_queue[i]; | |
7c0d10d3 | 1755 | if(tx_queue->tx_skbuff) |
fba4ed03 SG |
1756 | free_skb_tx_queue(tx_queue); |
1757 | } | |
1758 | ||
1759 | for (i = 0; i < priv->num_rx_queues; i++) { | |
1760 | rx_queue = priv->rx_queue[i]; | |
7c0d10d3 | 1761 | if(rx_queue->rx_skbuff) |
fba4ed03 SG |
1762 | free_skb_rx_queue(rx_queue); |
1763 | } | |
1764 | ||
1765 | dma_free_coherent(&priv->ofdev->dev, | |
1766 | sizeof(struct txbd8) * priv->total_tx_ring_size + | |
1767 | sizeof(struct rxbd8) * priv->total_rx_ring_size, | |
1768 | priv->tx_queue[0]->tx_bd_base, | |
1769 | priv->tx_queue[0]->tx_bd_dma_base); | |
7df9c43f | 1770 | skb_queue_purge(&priv->rx_recycle); |
1da177e4 LT |
1771 | } |
1772 | ||
0bbaf069 KG |
1773 | void gfar_start(struct net_device *dev) |
1774 | { | |
1775 | struct gfar_private *priv = netdev_priv(dev); | |
46ceb60c | 1776 | struct gfar __iomem *regs = priv->gfargrp[0].regs; |
0bbaf069 | 1777 | u32 tempval; |
46ceb60c | 1778 | int i = 0; |
0bbaf069 KG |
1779 | |
1780 | /* Enable Rx and Tx in MACCFG1 */ | |
1781 | tempval = gfar_read(®s->maccfg1); | |
1782 | tempval |= (MACCFG1_RX_EN | MACCFG1_TX_EN); | |
1783 | gfar_write(®s->maccfg1, tempval); | |
1784 | ||
1785 | /* Initialize DMACTRL to have WWR and WOP */ | |
f4983704 | 1786 | tempval = gfar_read(®s->dmactrl); |
0bbaf069 | 1787 | tempval |= DMACTRL_INIT_SETTINGS; |
f4983704 | 1788 | gfar_write(®s->dmactrl, tempval); |
0bbaf069 | 1789 | |
0bbaf069 | 1790 | /* Make sure we aren't stopped */ |
f4983704 | 1791 | tempval = gfar_read(®s->dmactrl); |
0bbaf069 | 1792 | tempval &= ~(DMACTRL_GRS | DMACTRL_GTS); |
f4983704 | 1793 | gfar_write(®s->dmactrl, tempval); |
0bbaf069 | 1794 | |
46ceb60c SG |
1795 | for (i = 0; i < priv->num_grps; i++) { |
1796 | regs = priv->gfargrp[i].regs; | |
1797 | /* Clear THLT/RHLT, so that the DMA starts polling now */ | |
1798 | gfar_write(®s->tstat, priv->gfargrp[i].tstat); | |
1799 | gfar_write(®s->rstat, priv->gfargrp[i].rstat); | |
1800 | /* Unmask the interrupts we look for */ | |
1801 | gfar_write(®s->imask, IMASK_DEFAULT); | |
1802 | } | |
12dea57b | 1803 | |
1ae5dc34 | 1804 | dev->trans_start = jiffies; /* prevent tx timeout */ |
0bbaf069 KG |
1805 | } |
1806 | ||
46ceb60c | 1807 | void gfar_configure_coalescing(struct gfar_private *priv, |
18294ad1 | 1808 | unsigned long tx_mask, unsigned long rx_mask) |
1da177e4 | 1809 | { |
46ceb60c | 1810 | struct gfar __iomem *regs = priv->gfargrp[0].regs; |
18294ad1 | 1811 | u32 __iomem *baddr; |
46ceb60c | 1812 | int i = 0; |
1da177e4 | 1813 | |
46ceb60c SG |
1814 | /* Backward compatible case ---- even if we enable |
1815 | * multiple queues, there's only single reg to program | |
1816 | */ | |
1817 | gfar_write(®s->txic, 0); | |
1818 | if(likely(priv->tx_queue[0]->txcoalescing)) | |
1819 | gfar_write(®s->txic, priv->tx_queue[0]->txic); | |
1da177e4 | 1820 | |
46ceb60c SG |
1821 | gfar_write(®s->rxic, 0); |
1822 | if(unlikely(priv->rx_queue[0]->rxcoalescing)) | |
1823 | gfar_write(®s->rxic, priv->rx_queue[0]->rxic); | |
815b97c6 | 1824 | |
46ceb60c SG |
1825 | if (priv->mode == MQ_MG_MODE) { |
1826 | baddr = ®s->txic0; | |
984b3f57 | 1827 | for_each_set_bit(i, &tx_mask, priv->num_tx_queues) { |
46ceb60c SG |
1828 | if (likely(priv->tx_queue[i]->txcoalescing)) { |
1829 | gfar_write(baddr + i, 0); | |
1830 | gfar_write(baddr + i, priv->tx_queue[i]->txic); | |
1831 | } | |
1832 | } | |
1833 | ||
1834 | baddr = ®s->rxic0; | |
984b3f57 | 1835 | for_each_set_bit(i, &rx_mask, priv->num_rx_queues) { |
46ceb60c SG |
1836 | if (likely(priv->rx_queue[i]->rxcoalescing)) { |
1837 | gfar_write(baddr + i, 0); | |
1838 | gfar_write(baddr + i, priv->rx_queue[i]->rxic); | |
1839 | } | |
1840 | } | |
1841 | } | |
1842 | } | |
1843 | ||
1844 | static int register_grp_irqs(struct gfar_priv_grp *grp) | |
1845 | { | |
1846 | struct gfar_private *priv = grp->priv; | |
1847 | struct net_device *dev = priv->ndev; | |
1848 | int err; | |
1da177e4 | 1849 | |
1da177e4 LT |
1850 | /* If the device has multiple interrupts, register for |
1851 | * them. Otherwise, only register for the one */ | |
b31a1d8b | 1852 | if (priv->device_flags & FSL_GIANFAR_DEV_HAS_MULTI_INTR) { |
0bbaf069 | 1853 | /* Install our interrupt handlers for Error, |
1da177e4 | 1854 | * Transmit, and Receive */ |
46ceb60c SG |
1855 | if ((err = request_irq(grp->interruptError, gfar_error, 0, |
1856 | grp->int_name_er,grp)) < 0) { | |
0bbaf069 | 1857 | if (netif_msg_intr(priv)) |
46ceb60c SG |
1858 | printk(KERN_ERR "%s: Can't get IRQ %d\n", |
1859 | dev->name, grp->interruptError); | |
1860 | ||
2145f1af | 1861 | goto err_irq_fail; |
1da177e4 LT |
1862 | } |
1863 | ||
46ceb60c SG |
1864 | if ((err = request_irq(grp->interruptTransmit, gfar_transmit, |
1865 | 0, grp->int_name_tx, grp)) < 0) { | |
0bbaf069 | 1866 | if (netif_msg_intr(priv)) |
46ceb60c SG |
1867 | printk(KERN_ERR "%s: Can't get IRQ %d\n", |
1868 | dev->name, grp->interruptTransmit); | |
1da177e4 LT |
1869 | goto tx_irq_fail; |
1870 | } | |
1871 | ||
46ceb60c SG |
1872 | if ((err = request_irq(grp->interruptReceive, gfar_receive, 0, |
1873 | grp->int_name_rx, grp)) < 0) { | |
0bbaf069 | 1874 | if (netif_msg_intr(priv)) |
46ceb60c SG |
1875 | printk(KERN_ERR "%s: Can't get IRQ %d\n", |
1876 | dev->name, grp->interruptReceive); | |
1da177e4 LT |
1877 | goto rx_irq_fail; |
1878 | } | |
1879 | } else { | |
46ceb60c SG |
1880 | if ((err = request_irq(grp->interruptTransmit, gfar_interrupt, 0, |
1881 | grp->int_name_tx, grp)) < 0) { | |
0bbaf069 | 1882 | if (netif_msg_intr(priv)) |
46ceb60c SG |
1883 | printk(KERN_ERR "%s: Can't get IRQ %d\n", |
1884 | dev->name, grp->interruptTransmit); | |
1da177e4 LT |
1885 | goto err_irq_fail; |
1886 | } | |
1887 | } | |
1888 | ||
46ceb60c SG |
1889 | return 0; |
1890 | ||
1891 | rx_irq_fail: | |
1892 | free_irq(grp->interruptTransmit, grp); | |
1893 | tx_irq_fail: | |
1894 | free_irq(grp->interruptError, grp); | |
1895 | err_irq_fail: | |
1896 | return err; | |
1897 | ||
1898 | } | |
1899 | ||
1900 | /* Bring the controller up and running */ | |
1901 | int startup_gfar(struct net_device *ndev) | |
1902 | { | |
1903 | struct gfar_private *priv = netdev_priv(ndev); | |
1904 | struct gfar __iomem *regs = NULL; | |
1905 | int err, i, j; | |
1906 | ||
1907 | for (i = 0; i < priv->num_grps; i++) { | |
1908 | regs= priv->gfargrp[i].regs; | |
1909 | gfar_write(®s->imask, IMASK_INIT_CLEAR); | |
1910 | } | |
1911 | ||
1912 | regs= priv->gfargrp[0].regs; | |
1913 | err = gfar_alloc_skb_resources(ndev); | |
1914 | if (err) | |
1915 | return err; | |
1916 | ||
1917 | gfar_init_mac(ndev); | |
1918 | ||
1919 | for (i = 0; i < priv->num_grps; i++) { | |
1920 | err = register_grp_irqs(&priv->gfargrp[i]); | |
1921 | if (err) { | |
1922 | for (j = 0; j < i; j++) | |
1923 | free_grp_irqs(&priv->gfargrp[j]); | |
1924 | goto irq_fail; | |
1925 | } | |
1926 | } | |
1927 | ||
7f7f5316 | 1928 | /* Start the controller */ |
ccc05c6e | 1929 | gfar_start(ndev); |
1da177e4 | 1930 | |
826aa4a0 AV |
1931 | phy_start(priv->phydev); |
1932 | ||
46ceb60c SG |
1933 | gfar_configure_coalescing(priv, 0xFF, 0xFF); |
1934 | ||
1da177e4 LT |
1935 | return 0; |
1936 | ||
46ceb60c | 1937 | irq_fail: |
e69edd21 | 1938 | free_skb_resources(priv); |
1da177e4 LT |
1939 | return err; |
1940 | } | |
1941 | ||
1942 | /* Called when something needs to use the ethernet device */ | |
1943 | /* Returns 0 for success. */ | |
1944 | static int gfar_enet_open(struct net_device *dev) | |
1945 | { | |
94e8cc35 | 1946 | struct gfar_private *priv = netdev_priv(dev); |
1da177e4 LT |
1947 | int err; |
1948 | ||
46ceb60c | 1949 | enable_napi(priv); |
bea3348e | 1950 | |
0fd56bb5 AF |
1951 | skb_queue_head_init(&priv->rx_recycle); |
1952 | ||
1da177e4 LT |
1953 | /* Initialize a bunch of registers */ |
1954 | init_registers(dev); | |
1955 | ||
1956 | gfar_set_mac_address(dev); | |
1957 | ||
1958 | err = init_phy(dev); | |
1959 | ||
a12f801d | 1960 | if (err) { |
46ceb60c | 1961 | disable_napi(priv); |
1da177e4 | 1962 | return err; |
bea3348e | 1963 | } |
1da177e4 LT |
1964 | |
1965 | err = startup_gfar(dev); | |
db0e8e3f | 1966 | if (err) { |
46ceb60c | 1967 | disable_napi(priv); |
db0e8e3f AV |
1968 | return err; |
1969 | } | |
1da177e4 | 1970 | |
fba4ed03 | 1971 | netif_tx_start_all_queues(dev); |
1da177e4 | 1972 | |
2884e5cc AV |
1973 | device_set_wakeup_enable(&dev->dev, priv->wol_en); |
1974 | ||
1da177e4 LT |
1975 | return err; |
1976 | } | |
1977 | ||
54dc79fe | 1978 | static inline struct txfcb *gfar_add_fcb(struct sk_buff *skb) |
0bbaf069 | 1979 | { |
54dc79fe | 1980 | struct txfcb *fcb = (struct txfcb *)skb_push(skb, GMAC_FCB_LEN); |
6c31d55f KG |
1981 | |
1982 | memset(fcb, 0, GMAC_FCB_LEN); | |
0bbaf069 | 1983 | |
0bbaf069 KG |
1984 | return fcb; |
1985 | } | |
1986 | ||
1987 | static inline void gfar_tx_checksum(struct sk_buff *skb, struct txfcb *fcb) | |
1988 | { | |
7f7f5316 | 1989 | u8 flags = 0; |
0bbaf069 KG |
1990 | |
1991 | /* If we're here, it's a IP packet with a TCP or UDP | |
1992 | * payload. We set it to checksum, using a pseudo-header | |
1993 | * we provide | |
1994 | */ | |
7f7f5316 | 1995 | flags = TXFCB_DEFAULT; |
0bbaf069 | 1996 | |
7f7f5316 AF |
1997 | /* Tell the controller what the protocol is */ |
1998 | /* And provide the already calculated phcs */ | |
eddc9ec5 | 1999 | if (ip_hdr(skb)->protocol == IPPROTO_UDP) { |
7f7f5316 | 2000 | flags |= TXFCB_UDP; |
4bedb452 | 2001 | fcb->phcs = udp_hdr(skb)->check; |
7f7f5316 | 2002 | } else |
8da32de5 | 2003 | fcb->phcs = tcp_hdr(skb)->check; |
0bbaf069 KG |
2004 | |
2005 | /* l3os is the distance between the start of the | |
2006 | * frame (skb->data) and the start of the IP hdr. | |
2007 | * l4os is the distance between the start of the | |
2008 | * l3 hdr and the l4 hdr */ | |
bbe735e4 | 2009 | fcb->l3os = (u16)(skb_network_offset(skb) - GMAC_FCB_LEN); |
cfe1fc77 | 2010 | fcb->l4os = skb_network_header_len(skb); |
0bbaf069 | 2011 | |
7f7f5316 | 2012 | fcb->flags = flags; |
0bbaf069 KG |
2013 | } |
2014 | ||
7f7f5316 | 2015 | void inline gfar_tx_vlan(struct sk_buff *skb, struct txfcb *fcb) |
0bbaf069 | 2016 | { |
7f7f5316 | 2017 | fcb->flags |= TXFCB_VLN; |
0bbaf069 KG |
2018 | fcb->vlctl = vlan_tx_tag_get(skb); |
2019 | } | |
2020 | ||
4669bc90 DH |
2021 | static inline struct txbd8 *skip_txbd(struct txbd8 *bdp, int stride, |
2022 | struct txbd8 *base, int ring_size) | |
2023 | { | |
2024 | struct txbd8 *new_bd = bdp + stride; | |
2025 | ||
2026 | return (new_bd >= (base + ring_size)) ? (new_bd - ring_size) : new_bd; | |
2027 | } | |
2028 | ||
2029 | static inline struct txbd8 *next_txbd(struct txbd8 *bdp, struct txbd8 *base, | |
2030 | int ring_size) | |
2031 | { | |
2032 | return skip_txbd(bdp, 1, base, ring_size); | |
2033 | } | |
2034 | ||
1da177e4 LT |
2035 | /* This is called by the kernel when a frame is ready for transmission. */ |
2036 | /* It is pointed to by the dev->hard_start_xmit function pointer */ | |
2037 | static int gfar_start_xmit(struct sk_buff *skb, struct net_device *dev) | |
2038 | { | |
2039 | struct gfar_private *priv = netdev_priv(dev); | |
a12f801d | 2040 | struct gfar_priv_tx_q *tx_queue = NULL; |
fba4ed03 | 2041 | struct netdev_queue *txq; |
f4983704 | 2042 | struct gfar __iomem *regs = NULL; |
0bbaf069 | 2043 | struct txfcb *fcb = NULL; |
f0ee7acf | 2044 | struct txbd8 *txbdp, *txbdp_start, *base, *txbdp_tstamp = NULL; |
5a5efed4 | 2045 | u32 lstatus; |
f0ee7acf | 2046 | int i, rq = 0, do_tstamp = 0; |
4669bc90 | 2047 | u32 bufaddr; |
fef6108d | 2048 | unsigned long flags; |
f0ee7acf | 2049 | unsigned int nr_frags, nr_txbds, length; |
fba4ed03 | 2050 | |
deb90eac AV |
2051 | /* |
2052 | * TOE=1 frames larger than 2500 bytes may see excess delays | |
2053 | * before start of transmission. | |
2054 | */ | |
2055 | if (unlikely(gfar_has_errata(priv, GFAR_ERRATA_76) && | |
2056 | skb->ip_summed == CHECKSUM_PARTIAL && | |
2057 | skb->len > 2500)) { | |
2058 | int ret; | |
2059 | ||
2060 | ret = skb_checksum_help(skb); | |
2061 | if (ret) | |
2062 | return ret; | |
2063 | } | |
2064 | ||
fba4ed03 SG |
2065 | rq = skb->queue_mapping; |
2066 | tx_queue = priv->tx_queue[rq]; | |
2067 | txq = netdev_get_tx_queue(dev, rq); | |
a12f801d | 2068 | base = tx_queue->tx_bd_base; |
46ceb60c | 2069 | regs = tx_queue->grp->regs; |
f0ee7acf MR |
2070 | |
2071 | /* check if time stamp should be generated */ | |
2244d07b OH |
2072 | if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP && |
2073 | priv->hwts_tx_en)) | |
f0ee7acf | 2074 | do_tstamp = 1; |
4669bc90 | 2075 | |
5b28beaf LY |
2076 | /* make space for additional header when fcb is needed */ |
2077 | if (((skb->ip_summed == CHECKSUM_PARTIAL) || | |
eab6d18d | 2078 | vlan_tx_tag_present(skb) || |
f0ee7acf | 2079 | unlikely(do_tstamp)) && |
5b28beaf | 2080 | (skb_headroom(skb) < GMAC_FCB_LEN)) { |
54dc79fe SH |
2081 | struct sk_buff *skb_new; |
2082 | ||
2083 | skb_new = skb_realloc_headroom(skb, GMAC_FCB_LEN); | |
2084 | if (!skb_new) { | |
2085 | dev->stats.tx_errors++; | |
bd14ba84 | 2086 | kfree_skb(skb); |
54dc79fe SH |
2087 | return NETDEV_TX_OK; |
2088 | } | |
2089 | kfree_skb(skb); | |
2090 | skb = skb_new; | |
2091 | } | |
2092 | ||
4669bc90 DH |
2093 | /* total number of fragments in the SKB */ |
2094 | nr_frags = skb_shinfo(skb)->nr_frags; | |
2095 | ||
f0ee7acf MR |
2096 | /* calculate the required number of TxBDs for this skb */ |
2097 | if (unlikely(do_tstamp)) | |
2098 | nr_txbds = nr_frags + 2; | |
2099 | else | |
2100 | nr_txbds = nr_frags + 1; | |
2101 | ||
4669bc90 | 2102 | /* check if there is space to queue this packet */ |
f0ee7acf | 2103 | if (nr_txbds > tx_queue->num_txbdfree) { |
4669bc90 | 2104 | /* no space, stop the queue */ |
fba4ed03 | 2105 | netif_tx_stop_queue(txq); |
4669bc90 | 2106 | dev->stats.tx_fifo_errors++; |
4669bc90 DH |
2107 | return NETDEV_TX_BUSY; |
2108 | } | |
1da177e4 LT |
2109 | |
2110 | /* Update transmit stats */ | |
a7f38041 SG |
2111 | txq->tx_bytes += skb->len; |
2112 | txq->tx_packets ++; | |
1da177e4 | 2113 | |
a12f801d | 2114 | txbdp = txbdp_start = tx_queue->cur_tx; |
f0ee7acf MR |
2115 | lstatus = txbdp->lstatus; |
2116 | ||
2117 | /* Time stamp insertion requires one additional TxBD */ | |
2118 | if (unlikely(do_tstamp)) | |
2119 | txbdp_tstamp = txbdp = next_txbd(txbdp, base, | |
2120 | tx_queue->tx_ring_size); | |
1da177e4 | 2121 | |
4669bc90 | 2122 | if (nr_frags == 0) { |
f0ee7acf MR |
2123 | if (unlikely(do_tstamp)) |
2124 | txbdp_tstamp->lstatus |= BD_LFLAG(TXBD_LAST | | |
2125 | TXBD_INTERRUPT); | |
2126 | else | |
2127 | lstatus |= BD_LFLAG(TXBD_LAST | TXBD_INTERRUPT); | |
4669bc90 DH |
2128 | } else { |
2129 | /* Place the fragment addresses and lengths into the TxBDs */ | |
2130 | for (i = 0; i < nr_frags; i++) { | |
2131 | /* Point at the next BD, wrapping as needed */ | |
a12f801d | 2132 | txbdp = next_txbd(txbdp, base, tx_queue->tx_ring_size); |
4669bc90 DH |
2133 | |
2134 | length = skb_shinfo(skb)->frags[i].size; | |
2135 | ||
2136 | lstatus = txbdp->lstatus | length | | |
2137 | BD_LFLAG(TXBD_READY); | |
2138 | ||
2139 | /* Handle the last BD specially */ | |
2140 | if (i == nr_frags - 1) | |
2141 | lstatus |= BD_LFLAG(TXBD_LAST | TXBD_INTERRUPT); | |
1da177e4 | 2142 | |
4826857f | 2143 | bufaddr = dma_map_page(&priv->ofdev->dev, |
4669bc90 DH |
2144 | skb_shinfo(skb)->frags[i].page, |
2145 | skb_shinfo(skb)->frags[i].page_offset, | |
2146 | length, | |
2147 | DMA_TO_DEVICE); | |
2148 | ||
2149 | /* set the TxBD length and buffer pointer */ | |
2150 | txbdp->bufPtr = bufaddr; | |
2151 | txbdp->lstatus = lstatus; | |
2152 | } | |
2153 | ||
2154 | lstatus = txbdp_start->lstatus; | |
2155 | } | |
1da177e4 | 2156 | |
0bbaf069 | 2157 | /* Set up checksumming */ |
12dea57b | 2158 | if (CHECKSUM_PARTIAL == skb->ip_summed) { |
54dc79fe SH |
2159 | fcb = gfar_add_fcb(skb); |
2160 | lstatus |= BD_LFLAG(TXBD_TOE); | |
2161 | gfar_tx_checksum(skb, fcb); | |
0bbaf069 KG |
2162 | } |
2163 | ||
eab6d18d | 2164 | if (vlan_tx_tag_present(skb)) { |
54dc79fe SH |
2165 | if (unlikely(NULL == fcb)) { |
2166 | fcb = gfar_add_fcb(skb); | |
5a5efed4 | 2167 | lstatus |= BD_LFLAG(TXBD_TOE); |
7f7f5316 | 2168 | } |
54dc79fe SH |
2169 | |
2170 | gfar_tx_vlan(skb, fcb); | |
0bbaf069 KG |
2171 | } |
2172 | ||
f0ee7acf MR |
2173 | /* Setup tx hardware time stamping if requested */ |
2174 | if (unlikely(do_tstamp)) { | |
2244d07b | 2175 | skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS; |
f0ee7acf MR |
2176 | if (fcb == NULL) |
2177 | fcb = gfar_add_fcb(skb); | |
2178 | fcb->ptp = 1; | |
2179 | lstatus |= BD_LFLAG(TXBD_TOE); | |
2180 | } | |
2181 | ||
4826857f | 2182 | txbdp_start->bufPtr = dma_map_single(&priv->ofdev->dev, skb->data, |
4669bc90 | 2183 | skb_headlen(skb), DMA_TO_DEVICE); |
1da177e4 | 2184 | |
f0ee7acf MR |
2185 | /* |
2186 | * If time stamping is requested one additional TxBD must be set up. The | |
2187 | * first TxBD points to the FCB and must have a data length of | |
2188 | * GMAC_FCB_LEN. The second TxBD points to the actual frame data with | |
2189 | * the full frame length. | |
2190 | */ | |
2191 | if (unlikely(do_tstamp)) { | |
2192 | txbdp_tstamp->bufPtr = txbdp_start->bufPtr + GMAC_FCB_LEN; | |
2193 | txbdp_tstamp->lstatus |= BD_LFLAG(TXBD_READY) | | |
2194 | (skb_headlen(skb) - GMAC_FCB_LEN); | |
2195 | lstatus |= BD_LFLAG(TXBD_CRC | TXBD_READY) | GMAC_FCB_LEN; | |
2196 | } else { | |
2197 | lstatus |= BD_LFLAG(TXBD_CRC | TXBD_READY) | skb_headlen(skb); | |
2198 | } | |
1da177e4 | 2199 | |
a3bc1f11 AV |
2200 | /* |
2201 | * We can work in parallel with gfar_clean_tx_ring(), except | |
2202 | * when modifying num_txbdfree. Note that we didn't grab the lock | |
2203 | * when we were reading the num_txbdfree and checking for available | |
2204 | * space, that's because outside of this function it can only grow, | |
2205 | * and once we've got needed space, it cannot suddenly disappear. | |
2206 | * | |
2207 | * The lock also protects us from gfar_error(), which can modify | |
2208 | * regs->tstat and thus retrigger the transfers, which is why we | |
2209 | * also must grab the lock before setting ready bit for the first | |
2210 | * to be transmitted BD. | |
2211 | */ | |
2212 | spin_lock_irqsave(&tx_queue->txlock, flags); | |
2213 | ||
4669bc90 DH |
2214 | /* |
2215 | * The powerpc-specific eieio() is used, as wmb() has too strong | |
3b6330ce SW |
2216 | * semantics (it requires synchronization between cacheable and |
2217 | * uncacheable mappings, which eieio doesn't provide and which we | |
2218 | * don't need), thus requiring a more expensive sync instruction. At | |
2219 | * some point, the set of architecture-independent barrier functions | |
2220 | * should be expanded to include weaker barriers. | |
2221 | */ | |
3b6330ce | 2222 | eieio(); |
7f7f5316 | 2223 | |
4669bc90 DH |
2224 | txbdp_start->lstatus = lstatus; |
2225 | ||
0eddba52 AV |
2226 | eieio(); /* force lstatus write before tx_skbuff */ |
2227 | ||
2228 | tx_queue->tx_skbuff[tx_queue->skb_curtx] = skb; | |
2229 | ||
4669bc90 DH |
2230 | /* Update the current skb pointer to the next entry we will use |
2231 | * (wrapping if necessary) */ | |
a12f801d SG |
2232 | tx_queue->skb_curtx = (tx_queue->skb_curtx + 1) & |
2233 | TX_RING_MOD_MASK(tx_queue->tx_ring_size); | |
4669bc90 | 2234 | |
a12f801d | 2235 | tx_queue->cur_tx = next_txbd(txbdp, base, tx_queue->tx_ring_size); |
4669bc90 DH |
2236 | |
2237 | /* reduce TxBD free count */ | |
f0ee7acf | 2238 | tx_queue->num_txbdfree -= (nr_txbds); |
1da177e4 LT |
2239 | |
2240 | /* If the next BD still needs to be cleaned up, then the bds | |
2241 | are full. We need to tell the kernel to stop sending us stuff. */ | |
a12f801d | 2242 | if (!tx_queue->num_txbdfree) { |
fba4ed03 | 2243 | netif_tx_stop_queue(txq); |
1da177e4 | 2244 | |
09f75cd7 | 2245 | dev->stats.tx_fifo_errors++; |
1da177e4 LT |
2246 | } |
2247 | ||
1da177e4 | 2248 | /* Tell the DMA to go go go */ |
fba4ed03 | 2249 | gfar_write(®s->tstat, TSTAT_CLEAR_THALT >> tx_queue->qindex); |
1da177e4 LT |
2250 | |
2251 | /* Unlock priv */ | |
a12f801d | 2252 | spin_unlock_irqrestore(&tx_queue->txlock, flags); |
1da177e4 | 2253 | |
54dc79fe | 2254 | return NETDEV_TX_OK; |
1da177e4 LT |
2255 | } |
2256 | ||
2257 | /* Stops the kernel queue, and halts the controller */ | |
2258 | static int gfar_close(struct net_device *dev) | |
2259 | { | |
2260 | struct gfar_private *priv = netdev_priv(dev); | |
bea3348e | 2261 | |
46ceb60c | 2262 | disable_napi(priv); |
bea3348e | 2263 | |
ab939905 | 2264 | cancel_work_sync(&priv->reset_task); |
1da177e4 LT |
2265 | stop_gfar(dev); |
2266 | ||
bb40dcbb AF |
2267 | /* Disconnect from the PHY */ |
2268 | phy_disconnect(priv->phydev); | |
2269 | priv->phydev = NULL; | |
1da177e4 | 2270 | |
fba4ed03 | 2271 | netif_tx_stop_all_queues(dev); |
1da177e4 LT |
2272 | |
2273 | return 0; | |
2274 | } | |
2275 | ||
1da177e4 | 2276 | /* Changes the mac address if the controller is not running. */ |
f162b9d5 | 2277 | static int gfar_set_mac_address(struct net_device *dev) |
1da177e4 | 2278 | { |
7f7f5316 | 2279 | gfar_set_mac_for_addr(dev, 0, dev->dev_addr); |
1da177e4 LT |
2280 | |
2281 | return 0; | |
2282 | } | |
2283 | ||
2284 | ||
0bbaf069 KG |
2285 | /* Enables and disables VLAN insertion/extraction */ |
2286 | static void gfar_vlan_rx_register(struct net_device *dev, | |
2287 | struct vlan_group *grp) | |
2288 | { | |
2289 | struct gfar_private *priv = netdev_priv(dev); | |
f4983704 | 2290 | struct gfar __iomem *regs = NULL; |
0bbaf069 KG |
2291 | unsigned long flags; |
2292 | u32 tempval; | |
2293 | ||
46ceb60c | 2294 | regs = priv->gfargrp[0].regs; |
fba4ed03 SG |
2295 | local_irq_save(flags); |
2296 | lock_rx_qs(priv); | |
0bbaf069 | 2297 | |
cd1f55a5 | 2298 | priv->vlgrp = grp; |
0bbaf069 KG |
2299 | |
2300 | if (grp) { | |
2301 | /* Enable VLAN tag insertion */ | |
f4983704 | 2302 | tempval = gfar_read(®s->tctrl); |
0bbaf069 KG |
2303 | tempval |= TCTRL_VLINS; |
2304 | ||
f4983704 | 2305 | gfar_write(®s->tctrl, tempval); |
6aa20a22 | 2306 | |
0bbaf069 | 2307 | /* Enable VLAN tag extraction */ |
f4983704 | 2308 | tempval = gfar_read(®s->rctrl); |
77ecaf2d | 2309 | tempval |= (RCTRL_VLEX | RCTRL_PRSDEP_INIT); |
f4983704 | 2310 | gfar_write(®s->rctrl, tempval); |
0bbaf069 KG |
2311 | } else { |
2312 | /* Disable VLAN tag insertion */ | |
f4983704 | 2313 | tempval = gfar_read(®s->tctrl); |
0bbaf069 | 2314 | tempval &= ~TCTRL_VLINS; |
f4983704 | 2315 | gfar_write(®s->tctrl, tempval); |
0bbaf069 KG |
2316 | |
2317 | /* Disable VLAN tag extraction */ | |
f4983704 | 2318 | tempval = gfar_read(®s->rctrl); |
0bbaf069 | 2319 | tempval &= ~RCTRL_VLEX; |
77ecaf2d DH |
2320 | /* If parse is no longer required, then disable parser */ |
2321 | if (tempval & RCTRL_REQ_PARSER) | |
2322 | tempval |= RCTRL_PRSDEP_INIT; | |
2323 | else | |
2324 | tempval &= ~RCTRL_PRSDEP_INIT; | |
f4983704 | 2325 | gfar_write(®s->rctrl, tempval); |
0bbaf069 KG |
2326 | } |
2327 | ||
77ecaf2d DH |
2328 | gfar_change_mtu(dev, dev->mtu); |
2329 | ||
fba4ed03 SG |
2330 | unlock_rx_qs(priv); |
2331 | local_irq_restore(flags); | |
0bbaf069 KG |
2332 | } |
2333 | ||
1da177e4 LT |
2334 | static int gfar_change_mtu(struct net_device *dev, int new_mtu) |
2335 | { | |
2336 | int tempsize, tempval; | |
2337 | struct gfar_private *priv = netdev_priv(dev); | |
46ceb60c | 2338 | struct gfar __iomem *regs = priv->gfargrp[0].regs; |
1da177e4 | 2339 | int oldsize = priv->rx_buffer_size; |
0bbaf069 KG |
2340 | int frame_size = new_mtu + ETH_HLEN; |
2341 | ||
77ecaf2d | 2342 | if (priv->vlgrp) |
faa89577 | 2343 | frame_size += VLAN_HLEN; |
0bbaf069 | 2344 | |
1da177e4 | 2345 | if ((frame_size < 64) || (frame_size > JUMBO_FRAME_SIZE)) { |
0bbaf069 KG |
2346 | if (netif_msg_drv(priv)) |
2347 | printk(KERN_ERR "%s: Invalid MTU setting\n", | |
2348 | dev->name); | |
1da177e4 LT |
2349 | return -EINVAL; |
2350 | } | |
2351 | ||
77ecaf2d DH |
2352 | if (gfar_uses_fcb(priv)) |
2353 | frame_size += GMAC_FCB_LEN; | |
2354 | ||
2355 | frame_size += priv->padding; | |
2356 | ||
1da177e4 LT |
2357 | tempsize = |
2358 | (frame_size & ~(INCREMENTAL_BUFFER_SIZE - 1)) + | |
2359 | INCREMENTAL_BUFFER_SIZE; | |
2360 | ||
2361 | /* Only stop and start the controller if it isn't already | |
7f7f5316 | 2362 | * stopped, and we changed something */ |
1da177e4 LT |
2363 | if ((oldsize != tempsize) && (dev->flags & IFF_UP)) |
2364 | stop_gfar(dev); | |
2365 | ||
2366 | priv->rx_buffer_size = tempsize; | |
2367 | ||
2368 | dev->mtu = new_mtu; | |
2369 | ||
f4983704 SG |
2370 | gfar_write(®s->mrblr, priv->rx_buffer_size); |
2371 | gfar_write(®s->maxfrm, priv->rx_buffer_size); | |
1da177e4 LT |
2372 | |
2373 | /* If the mtu is larger than the max size for standard | |
2374 | * ethernet frames (ie, a jumbo frame), then set maccfg2 | |
2375 | * to allow huge frames, and to check the length */ | |
f4983704 | 2376 | tempval = gfar_read(®s->maccfg2); |
1da177e4 | 2377 | |
7d350977 AV |
2378 | if (priv->rx_buffer_size > DEFAULT_RX_BUFFER_SIZE || |
2379 | gfar_has_errata(priv, GFAR_ERRATA_74)) | |
1da177e4 LT |
2380 | tempval |= (MACCFG2_HUGEFRAME | MACCFG2_LENGTHCHECK); |
2381 | else | |
2382 | tempval &= ~(MACCFG2_HUGEFRAME | MACCFG2_LENGTHCHECK); | |
2383 | ||
f4983704 | 2384 | gfar_write(®s->maccfg2, tempval); |
1da177e4 LT |
2385 | |
2386 | if ((oldsize != tempsize) && (dev->flags & IFF_UP)) | |
2387 | startup_gfar(dev); | |
2388 | ||
2389 | return 0; | |
2390 | } | |
2391 | ||
ab939905 | 2392 | /* gfar_reset_task gets scheduled when a packet has not been |
1da177e4 LT |
2393 | * transmitted after a set amount of time. |
2394 | * For now, assume that clearing out all the structures, and | |
ab939905 SS |
2395 | * starting over will fix the problem. |
2396 | */ | |
2397 | static void gfar_reset_task(struct work_struct *work) | |
1da177e4 | 2398 | { |
ab939905 SS |
2399 | struct gfar_private *priv = container_of(work, struct gfar_private, |
2400 | reset_task); | |
4826857f | 2401 | struct net_device *dev = priv->ndev; |
1da177e4 LT |
2402 | |
2403 | if (dev->flags & IFF_UP) { | |
fba4ed03 | 2404 | netif_tx_stop_all_queues(dev); |
1da177e4 LT |
2405 | stop_gfar(dev); |
2406 | startup_gfar(dev); | |
fba4ed03 | 2407 | netif_tx_start_all_queues(dev); |
1da177e4 LT |
2408 | } |
2409 | ||
263ba320 | 2410 | netif_tx_schedule_all(dev); |
1da177e4 LT |
2411 | } |
2412 | ||
ab939905 SS |
2413 | static void gfar_timeout(struct net_device *dev) |
2414 | { | |
2415 | struct gfar_private *priv = netdev_priv(dev); | |
2416 | ||
2417 | dev->stats.tx_errors++; | |
2418 | schedule_work(&priv->reset_task); | |
2419 | } | |
2420 | ||
acbc0f03 EL |
2421 | static void gfar_align_skb(struct sk_buff *skb) |
2422 | { | |
2423 | /* We need the data buffer to be aligned properly. We will reserve | |
2424 | * as many bytes as needed to align the data properly | |
2425 | */ | |
2426 | skb_reserve(skb, RXBUF_ALIGNMENT - | |
2427 | (((unsigned long) skb->data) & (RXBUF_ALIGNMENT - 1))); | |
2428 | } | |
2429 | ||
1da177e4 | 2430 | /* Interrupt Handler for Transmit complete */ |
a12f801d | 2431 | static int gfar_clean_tx_ring(struct gfar_priv_tx_q *tx_queue) |
1da177e4 | 2432 | { |
a12f801d | 2433 | struct net_device *dev = tx_queue->dev; |
d080cd63 | 2434 | struct gfar_private *priv = netdev_priv(dev); |
a12f801d | 2435 | struct gfar_priv_rx_q *rx_queue = NULL; |
f0ee7acf | 2436 | struct txbd8 *bdp, *next = NULL; |
4669bc90 | 2437 | struct txbd8 *lbdp = NULL; |
a12f801d | 2438 | struct txbd8 *base = tx_queue->tx_bd_base; |
4669bc90 DH |
2439 | struct sk_buff *skb; |
2440 | int skb_dirtytx; | |
a12f801d | 2441 | int tx_ring_size = tx_queue->tx_ring_size; |
f0ee7acf | 2442 | int frags = 0, nr_txbds = 0; |
4669bc90 | 2443 | int i; |
d080cd63 | 2444 | int howmany = 0; |
4669bc90 | 2445 | u32 lstatus; |
f0ee7acf | 2446 | size_t buflen; |
1da177e4 | 2447 | |
fba4ed03 | 2448 | rx_queue = priv->rx_queue[tx_queue->qindex]; |
a12f801d SG |
2449 | bdp = tx_queue->dirty_tx; |
2450 | skb_dirtytx = tx_queue->skb_dirtytx; | |
1da177e4 | 2451 | |
a12f801d | 2452 | while ((skb = tx_queue->tx_skbuff[skb_dirtytx])) { |
a3bc1f11 AV |
2453 | unsigned long flags; |
2454 | ||
4669bc90 | 2455 | frags = skb_shinfo(skb)->nr_frags; |
f0ee7acf MR |
2456 | |
2457 | /* | |
2458 | * When time stamping, one additional TxBD must be freed. | |
2459 | * Also, we need to dma_unmap_single() the TxPAL. | |
2460 | */ | |
2244d07b | 2461 | if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_IN_PROGRESS)) |
f0ee7acf MR |
2462 | nr_txbds = frags + 2; |
2463 | else | |
2464 | nr_txbds = frags + 1; | |
2465 | ||
2466 | lbdp = skip_txbd(bdp, nr_txbds - 1, base, tx_ring_size); | |
1da177e4 | 2467 | |
4669bc90 | 2468 | lstatus = lbdp->lstatus; |
1da177e4 | 2469 | |
4669bc90 DH |
2470 | /* Only clean completed frames */ |
2471 | if ((lstatus & BD_LFLAG(TXBD_READY)) && | |
2472 | (lstatus & BD_LENGTH_MASK)) | |
2473 | break; | |
2474 | ||
2244d07b | 2475 | if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_IN_PROGRESS)) { |
f0ee7acf MR |
2476 | next = next_txbd(bdp, base, tx_ring_size); |
2477 | buflen = next->length + GMAC_FCB_LEN; | |
2478 | } else | |
2479 | buflen = bdp->length; | |
2480 | ||
2481 | dma_unmap_single(&priv->ofdev->dev, bdp->bufPtr, | |
2482 | buflen, DMA_TO_DEVICE); | |
2483 | ||
2244d07b | 2484 | if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_IN_PROGRESS)) { |
f0ee7acf MR |
2485 | struct skb_shared_hwtstamps shhwtstamps; |
2486 | u64 *ns = (u64*) (((u32)skb->data + 0x10) & ~0x7); | |
2487 | memset(&shhwtstamps, 0, sizeof(shhwtstamps)); | |
2488 | shhwtstamps.hwtstamp = ns_to_ktime(*ns); | |
2489 | skb_tstamp_tx(skb, &shhwtstamps); | |
2490 | bdp->lstatus &= BD_LFLAG(TXBD_WRAP); | |
2491 | bdp = next; | |
2492 | } | |
81183059 | 2493 | |
4669bc90 DH |
2494 | bdp->lstatus &= BD_LFLAG(TXBD_WRAP); |
2495 | bdp = next_txbd(bdp, base, tx_ring_size); | |
d080cd63 | 2496 | |
4669bc90 | 2497 | for (i = 0; i < frags; i++) { |
4826857f | 2498 | dma_unmap_page(&priv->ofdev->dev, |
4669bc90 DH |
2499 | bdp->bufPtr, |
2500 | bdp->length, | |
2501 | DMA_TO_DEVICE); | |
2502 | bdp->lstatus &= BD_LFLAG(TXBD_WRAP); | |
2503 | bdp = next_txbd(bdp, base, tx_ring_size); | |
2504 | } | |
1da177e4 | 2505 | |
0fd56bb5 AF |
2506 | /* |
2507 | * If there's room in the queue (limit it to rx_buffer_size) | |
2508 | * we add this skb back into the pool, if it's the right size | |
2509 | */ | |
a12f801d | 2510 | if (skb_queue_len(&priv->rx_recycle) < rx_queue->rx_ring_size && |
0fd56bb5 | 2511 | skb_recycle_check(skb, priv->rx_buffer_size + |
acbc0f03 EL |
2512 | RXBUF_ALIGNMENT)) { |
2513 | gfar_align_skb(skb); | |
0fd56bb5 | 2514 | __skb_queue_head(&priv->rx_recycle, skb); |
acbc0f03 | 2515 | } else |
0fd56bb5 AF |
2516 | dev_kfree_skb_any(skb); |
2517 | ||
a12f801d | 2518 | tx_queue->tx_skbuff[skb_dirtytx] = NULL; |
d080cd63 | 2519 | |
4669bc90 DH |
2520 | skb_dirtytx = (skb_dirtytx + 1) & |
2521 | TX_RING_MOD_MASK(tx_ring_size); | |
2522 | ||
2523 | howmany++; | |
a3bc1f11 | 2524 | spin_lock_irqsave(&tx_queue->txlock, flags); |
f0ee7acf | 2525 | tx_queue->num_txbdfree += nr_txbds; |
a3bc1f11 | 2526 | spin_unlock_irqrestore(&tx_queue->txlock, flags); |
4669bc90 | 2527 | } |
1da177e4 | 2528 | |
4669bc90 | 2529 | /* If we freed a buffer, we can restart transmission, if necessary */ |
fba4ed03 SG |
2530 | if (__netif_subqueue_stopped(dev, tx_queue->qindex) && tx_queue->num_txbdfree) |
2531 | netif_wake_subqueue(dev, tx_queue->qindex); | |
1da177e4 | 2532 | |
4669bc90 | 2533 | /* Update dirty indicators */ |
a12f801d SG |
2534 | tx_queue->skb_dirtytx = skb_dirtytx; |
2535 | tx_queue->dirty_tx = bdp; | |
1da177e4 | 2536 | |
d080cd63 DH |
2537 | return howmany; |
2538 | } | |
2539 | ||
f4983704 | 2540 | static void gfar_schedule_cleanup(struct gfar_priv_grp *gfargrp) |
d080cd63 | 2541 | { |
a6d0b91a AV |
2542 | unsigned long flags; |
2543 | ||
fba4ed03 SG |
2544 | spin_lock_irqsave(&gfargrp->grplock, flags); |
2545 | if (napi_schedule_prep(&gfargrp->napi)) { | |
f4983704 | 2546 | gfar_write(&gfargrp->regs->imask, IMASK_RTX_DISABLED); |
fba4ed03 | 2547 | __napi_schedule(&gfargrp->napi); |
8707bdd4 JP |
2548 | } else { |
2549 | /* | |
2550 | * Clear IEVENT, so interrupts aren't called again | |
2551 | * because of the packets that have already arrived. | |
2552 | */ | |
f4983704 | 2553 | gfar_write(&gfargrp->regs->ievent, IEVENT_RTX_MASK); |
2f448911 | 2554 | } |
fba4ed03 | 2555 | spin_unlock_irqrestore(&gfargrp->grplock, flags); |
a6d0b91a | 2556 | |
8c7396ae | 2557 | } |
1da177e4 | 2558 | |
8c7396ae | 2559 | /* Interrupt Handler for Transmit complete */ |
f4983704 | 2560 | static irqreturn_t gfar_transmit(int irq, void *grp_id) |
8c7396ae | 2561 | { |
f4983704 | 2562 | gfar_schedule_cleanup((struct gfar_priv_grp *)grp_id); |
1da177e4 LT |
2563 | return IRQ_HANDLED; |
2564 | } | |
2565 | ||
a12f801d | 2566 | static void gfar_new_rxbdp(struct gfar_priv_rx_q *rx_queue, struct rxbd8 *bdp, |
815b97c6 AF |
2567 | struct sk_buff *skb) |
2568 | { | |
a12f801d | 2569 | struct net_device *dev = rx_queue->dev; |
815b97c6 | 2570 | struct gfar_private *priv = netdev_priv(dev); |
8a102fe0 | 2571 | dma_addr_t buf; |
815b97c6 | 2572 | |
8a102fe0 AV |
2573 | buf = dma_map_single(&priv->ofdev->dev, skb->data, |
2574 | priv->rx_buffer_size, DMA_FROM_DEVICE); | |
a12f801d | 2575 | gfar_init_rxbdp(rx_queue, bdp, buf); |
815b97c6 AF |
2576 | } |
2577 | ||
acbc0f03 | 2578 | static struct sk_buff * gfar_alloc_skb(struct net_device *dev) |
1da177e4 LT |
2579 | { |
2580 | struct gfar_private *priv = netdev_priv(dev); | |
2581 | struct sk_buff *skb = NULL; | |
1da177e4 | 2582 | |
acbc0f03 | 2583 | skb = netdev_alloc_skb(dev, priv->rx_buffer_size + RXBUF_ALIGNMENT); |
815b97c6 | 2584 | if (!skb) |
1da177e4 LT |
2585 | return NULL; |
2586 | ||
acbc0f03 | 2587 | gfar_align_skb(skb); |
7f7f5316 | 2588 | |
acbc0f03 EL |
2589 | return skb; |
2590 | } | |
2591 | ||
2592 | struct sk_buff * gfar_new_skb(struct net_device *dev) | |
2593 | { | |
2594 | struct gfar_private *priv = netdev_priv(dev); | |
2595 | struct sk_buff *skb = NULL; | |
2596 | ||
2597 | skb = __skb_dequeue(&priv->rx_recycle); | |
2598 | if (!skb) | |
2599 | skb = gfar_alloc_skb(dev); | |
1da177e4 | 2600 | |
1da177e4 LT |
2601 | return skb; |
2602 | } | |
2603 | ||
298e1a9e | 2604 | static inline void count_errors(unsigned short status, struct net_device *dev) |
1da177e4 | 2605 | { |
298e1a9e | 2606 | struct gfar_private *priv = netdev_priv(dev); |
09f75cd7 | 2607 | struct net_device_stats *stats = &dev->stats; |
1da177e4 LT |
2608 | struct gfar_extra_stats *estats = &priv->extra_stats; |
2609 | ||
2610 | /* If the packet was truncated, none of the other errors | |
2611 | * matter */ | |
2612 | if (status & RXBD_TRUNCATED) { | |
2613 | stats->rx_length_errors++; | |
2614 | ||
2615 | estats->rx_trunc++; | |
2616 | ||
2617 | return; | |
2618 | } | |
2619 | /* Count the errors, if there were any */ | |
2620 | if (status & (RXBD_LARGE | RXBD_SHORT)) { | |
2621 | stats->rx_length_errors++; | |
2622 | ||
2623 | if (status & RXBD_LARGE) | |
2624 | estats->rx_large++; | |
2625 | else | |
2626 | estats->rx_short++; | |
2627 | } | |
2628 | if (status & RXBD_NONOCTET) { | |
2629 | stats->rx_frame_errors++; | |
2630 | estats->rx_nonoctet++; | |
2631 | } | |
2632 | if (status & RXBD_CRCERR) { | |
2633 | estats->rx_crcerr++; | |
2634 | stats->rx_crc_errors++; | |
2635 | } | |
2636 | if (status & RXBD_OVERRUN) { | |
2637 | estats->rx_overrun++; | |
2638 | stats->rx_crc_errors++; | |
2639 | } | |
2640 | } | |
2641 | ||
f4983704 | 2642 | irqreturn_t gfar_receive(int irq, void *grp_id) |
1da177e4 | 2643 | { |
f4983704 | 2644 | gfar_schedule_cleanup((struct gfar_priv_grp *)grp_id); |
1da177e4 LT |
2645 | return IRQ_HANDLED; |
2646 | } | |
2647 | ||
0bbaf069 KG |
2648 | static inline void gfar_rx_checksum(struct sk_buff *skb, struct rxfcb *fcb) |
2649 | { | |
2650 | /* If valid headers were found, and valid sums | |
2651 | * were verified, then we tell the kernel that no | |
2652 | * checksumming is necessary. Otherwise, it is */ | |
7f7f5316 | 2653 | if ((fcb->flags & RXFCB_CSUM_MASK) == (RXFCB_CIP | RXFCB_CTU)) |
0bbaf069 KG |
2654 | skb->ip_summed = CHECKSUM_UNNECESSARY; |
2655 | else | |
bc8acf2c | 2656 | skb_checksum_none_assert(skb); |
0bbaf069 KG |
2657 | } |
2658 | ||
2659 | ||
1da177e4 LT |
2660 | /* gfar_process_frame() -- handle one incoming packet if skb |
2661 | * isn't NULL. */ | |
2662 | static int gfar_process_frame(struct net_device *dev, struct sk_buff *skb, | |
2c2db48a | 2663 | int amount_pull) |
1da177e4 LT |
2664 | { |
2665 | struct gfar_private *priv = netdev_priv(dev); | |
0bbaf069 | 2666 | struct rxfcb *fcb = NULL; |
1da177e4 | 2667 | |
2c2db48a | 2668 | int ret; |
1da177e4 | 2669 | |
2c2db48a DH |
2670 | /* fcb is at the beginning if exists */ |
2671 | fcb = (struct rxfcb *)skb->data; | |
0bbaf069 | 2672 | |
2c2db48a DH |
2673 | /* Remove the FCB from the skb */ |
2674 | /* Remove the padded bytes, if there are any */ | |
f74dac08 SG |
2675 | if (amount_pull) { |
2676 | skb_record_rx_queue(skb, fcb->rq); | |
2c2db48a | 2677 | skb_pull(skb, amount_pull); |
f74dac08 | 2678 | } |
0bbaf069 | 2679 | |
cc772ab7 MR |
2680 | /* Get receive timestamp from the skb */ |
2681 | if (priv->hwts_rx_en) { | |
2682 | struct skb_shared_hwtstamps *shhwtstamps = skb_hwtstamps(skb); | |
2683 | u64 *ns = (u64 *) skb->data; | |
2684 | memset(shhwtstamps, 0, sizeof(*shhwtstamps)); | |
2685 | shhwtstamps->hwtstamp = ns_to_ktime(*ns); | |
2686 | } | |
2687 | ||
2688 | if (priv->padding) | |
2689 | skb_pull(skb, priv->padding); | |
2690 | ||
2c2db48a DH |
2691 | if (priv->rx_csum_enable) |
2692 | gfar_rx_checksum(skb, fcb); | |
0bbaf069 | 2693 | |
2c2db48a DH |
2694 | /* Tell the skb what kind of packet this is */ |
2695 | skb->protocol = eth_type_trans(skb, dev); | |
1da177e4 | 2696 | |
2c2db48a DH |
2697 | /* Send the packet up the stack */ |
2698 | if (unlikely(priv->vlgrp && (fcb->flags & RXFCB_VLN))) | |
2699 | ret = vlan_hwaccel_receive_skb(skb, priv->vlgrp, fcb->vlctl); | |
2700 | else | |
2701 | ret = netif_receive_skb(skb); | |
0bbaf069 | 2702 | |
2c2db48a DH |
2703 | if (NET_RX_DROP == ret) |
2704 | priv->extra_stats.kernel_dropped++; | |
1da177e4 LT |
2705 | |
2706 | return 0; | |
2707 | } | |
2708 | ||
2709 | /* gfar_clean_rx_ring() -- Processes each frame in the rx ring | |
0bbaf069 | 2710 | * until the budget/quota has been reached. Returns the number |
1da177e4 LT |
2711 | * of frames handled |
2712 | */ | |
a12f801d | 2713 | int gfar_clean_rx_ring(struct gfar_priv_rx_q *rx_queue, int rx_work_limit) |
1da177e4 | 2714 | { |
a12f801d | 2715 | struct net_device *dev = rx_queue->dev; |
31de198b | 2716 | struct rxbd8 *bdp, *base; |
1da177e4 | 2717 | struct sk_buff *skb; |
2c2db48a DH |
2718 | int pkt_len; |
2719 | int amount_pull; | |
1da177e4 LT |
2720 | int howmany = 0; |
2721 | struct gfar_private *priv = netdev_priv(dev); | |
2722 | ||
2723 | /* Get the first full descriptor */ | |
a12f801d SG |
2724 | bdp = rx_queue->cur_rx; |
2725 | base = rx_queue->rx_bd_base; | |
1da177e4 | 2726 | |
cc772ab7 | 2727 | amount_pull = (gfar_uses_fcb(priv) ? GMAC_FCB_LEN : 0); |
2c2db48a | 2728 | |
1da177e4 | 2729 | while (!((bdp->status & RXBD_EMPTY) || (--rx_work_limit < 0))) { |
815b97c6 | 2730 | struct sk_buff *newskb; |
3b6330ce | 2731 | rmb(); |
815b97c6 AF |
2732 | |
2733 | /* Add another skb for the future */ | |
2734 | newskb = gfar_new_skb(dev); | |
2735 | ||
a12f801d | 2736 | skb = rx_queue->rx_skbuff[rx_queue->skb_currx]; |
1da177e4 | 2737 | |
4826857f | 2738 | dma_unmap_single(&priv->ofdev->dev, bdp->bufPtr, |
81183059 AF |
2739 | priv->rx_buffer_size, DMA_FROM_DEVICE); |
2740 | ||
63b88b90 AV |
2741 | if (unlikely(!(bdp->status & RXBD_ERR) && |
2742 | bdp->length > priv->rx_buffer_size)) | |
2743 | bdp->status = RXBD_LARGE; | |
2744 | ||
815b97c6 AF |
2745 | /* We drop the frame if we failed to allocate a new buffer */ |
2746 | if (unlikely(!newskb || !(bdp->status & RXBD_LAST) || | |
2747 | bdp->status & RXBD_ERR)) { | |
2748 | count_errors(bdp->status, dev); | |
2749 | ||
2750 | if (unlikely(!newskb)) | |
2751 | newskb = skb; | |
acbc0f03 | 2752 | else if (skb) |
0fd56bb5 | 2753 | __skb_queue_head(&priv->rx_recycle, skb); |
815b97c6 | 2754 | } else { |
1da177e4 | 2755 | /* Increment the number of packets */ |
a7f38041 | 2756 | rx_queue->stats.rx_packets++; |
1da177e4 LT |
2757 | howmany++; |
2758 | ||
2c2db48a DH |
2759 | if (likely(skb)) { |
2760 | pkt_len = bdp->length - ETH_FCS_LEN; | |
2761 | /* Remove the FCS from the packet length */ | |
2762 | skb_put(skb, pkt_len); | |
a7f38041 | 2763 | rx_queue->stats.rx_bytes += pkt_len; |
f74dac08 | 2764 | skb_record_rx_queue(skb, rx_queue->qindex); |
2c2db48a DH |
2765 | gfar_process_frame(dev, skb, amount_pull); |
2766 | ||
2767 | } else { | |
2768 | if (netif_msg_rx_err(priv)) | |
2769 | printk(KERN_WARNING | |
2770 | "%s: Missing skb!\n", dev->name); | |
a7f38041 | 2771 | rx_queue->stats.rx_dropped++; |
2c2db48a DH |
2772 | priv->extra_stats.rx_skbmissing++; |
2773 | } | |
1da177e4 | 2774 | |
1da177e4 LT |
2775 | } |
2776 | ||
a12f801d | 2777 | rx_queue->rx_skbuff[rx_queue->skb_currx] = newskb; |
1da177e4 | 2778 | |
815b97c6 | 2779 | /* Setup the new bdp */ |
a12f801d | 2780 | gfar_new_rxbdp(rx_queue, bdp, newskb); |
1da177e4 LT |
2781 | |
2782 | /* Update to the next pointer */ | |
a12f801d | 2783 | bdp = next_bd(bdp, base, rx_queue->rx_ring_size); |
1da177e4 LT |
2784 | |
2785 | /* update to point at the next skb */ | |
a12f801d SG |
2786 | rx_queue->skb_currx = |
2787 | (rx_queue->skb_currx + 1) & | |
2788 | RX_RING_MOD_MASK(rx_queue->rx_ring_size); | |
1da177e4 LT |
2789 | } |
2790 | ||
2791 | /* Update the current rxbd pointer to be the next one */ | |
a12f801d | 2792 | rx_queue->cur_rx = bdp; |
1da177e4 | 2793 | |
1da177e4 LT |
2794 | return howmany; |
2795 | } | |
2796 | ||
bea3348e | 2797 | static int gfar_poll(struct napi_struct *napi, int budget) |
1da177e4 | 2798 | { |
fba4ed03 SG |
2799 | struct gfar_priv_grp *gfargrp = container_of(napi, |
2800 | struct gfar_priv_grp, napi); | |
2801 | struct gfar_private *priv = gfargrp->priv; | |
46ceb60c | 2802 | struct gfar __iomem *regs = gfargrp->regs; |
a12f801d | 2803 | struct gfar_priv_tx_q *tx_queue = NULL; |
fba4ed03 SG |
2804 | struct gfar_priv_rx_q *rx_queue = NULL; |
2805 | int rx_cleaned = 0, budget_per_queue = 0, rx_cleaned_per_queue = 0; | |
18294ad1 AV |
2806 | int tx_cleaned = 0, i, left_over_budget = budget; |
2807 | unsigned long serviced_queues = 0; | |
fba4ed03 | 2808 | int num_queues = 0; |
d080cd63 | 2809 | |
fba4ed03 SG |
2810 | num_queues = gfargrp->num_rx_queues; |
2811 | budget_per_queue = budget/num_queues; | |
2812 | ||
8c7396ae DH |
2813 | /* Clear IEVENT, so interrupts aren't called again |
2814 | * because of the packets that have already arrived */ | |
f4983704 | 2815 | gfar_write(®s->ievent, IEVENT_RTX_MASK); |
8c7396ae | 2816 | |
fba4ed03 | 2817 | while (num_queues && left_over_budget) { |
1da177e4 | 2818 | |
fba4ed03 SG |
2819 | budget_per_queue = left_over_budget/num_queues; |
2820 | left_over_budget = 0; | |
2821 | ||
984b3f57 | 2822 | for_each_set_bit(i, &gfargrp->rx_bit_map, priv->num_rx_queues) { |
fba4ed03 SG |
2823 | if (test_bit(i, &serviced_queues)) |
2824 | continue; | |
2825 | rx_queue = priv->rx_queue[i]; | |
2826 | tx_queue = priv->tx_queue[rx_queue->qindex]; | |
2827 | ||
a3bc1f11 | 2828 | tx_cleaned += gfar_clean_tx_ring(tx_queue); |
fba4ed03 SG |
2829 | rx_cleaned_per_queue = gfar_clean_rx_ring(rx_queue, |
2830 | budget_per_queue); | |
2831 | rx_cleaned += rx_cleaned_per_queue; | |
2832 | if(rx_cleaned_per_queue < budget_per_queue) { | |
2833 | left_over_budget = left_over_budget + | |
2834 | (budget_per_queue - rx_cleaned_per_queue); | |
2835 | set_bit(i, &serviced_queues); | |
2836 | num_queues--; | |
2837 | } | |
2838 | } | |
2839 | } | |
1da177e4 | 2840 | |
42199884 AF |
2841 | if (tx_cleaned) |
2842 | return budget; | |
2843 | ||
2844 | if (rx_cleaned < budget) { | |
288379f0 | 2845 | napi_complete(napi); |
1da177e4 LT |
2846 | |
2847 | /* Clear the halt bit in RSTAT */ | |
fba4ed03 | 2848 | gfar_write(®s->rstat, gfargrp->rstat); |
1da177e4 | 2849 | |
f4983704 | 2850 | gfar_write(®s->imask, IMASK_DEFAULT); |
1da177e4 LT |
2851 | |
2852 | /* If we are coalescing interrupts, update the timer */ | |
2853 | /* Otherwise, clear it */ | |
46ceb60c SG |
2854 | gfar_configure_coalescing(priv, |
2855 | gfargrp->rx_bit_map, gfargrp->tx_bit_map); | |
1da177e4 LT |
2856 | } |
2857 | ||
42199884 | 2858 | return rx_cleaned; |
1da177e4 | 2859 | } |
1da177e4 | 2860 | |
f2d71c2d VW |
2861 | #ifdef CONFIG_NET_POLL_CONTROLLER |
2862 | /* | |
2863 | * Polling 'interrupt' - used by things like netconsole to send skbs | |
2864 | * without having to re-enable interrupts. It's not called while | |
2865 | * the interrupt routine is executing. | |
2866 | */ | |
2867 | static void gfar_netpoll(struct net_device *dev) | |
2868 | { | |
2869 | struct gfar_private *priv = netdev_priv(dev); | |
46ceb60c | 2870 | int i = 0; |
f2d71c2d VW |
2871 | |
2872 | /* If the device has multiple interrupts, run tx/rx */ | |
b31a1d8b | 2873 | if (priv->device_flags & FSL_GIANFAR_DEV_HAS_MULTI_INTR) { |
46ceb60c SG |
2874 | for (i = 0; i < priv->num_grps; i++) { |
2875 | disable_irq(priv->gfargrp[i].interruptTransmit); | |
2876 | disable_irq(priv->gfargrp[i].interruptReceive); | |
2877 | disable_irq(priv->gfargrp[i].interruptError); | |
2878 | gfar_interrupt(priv->gfargrp[i].interruptTransmit, | |
2879 | &priv->gfargrp[i]); | |
2880 | enable_irq(priv->gfargrp[i].interruptError); | |
2881 | enable_irq(priv->gfargrp[i].interruptReceive); | |
2882 | enable_irq(priv->gfargrp[i].interruptTransmit); | |
2883 | } | |
f2d71c2d | 2884 | } else { |
46ceb60c SG |
2885 | for (i = 0; i < priv->num_grps; i++) { |
2886 | disable_irq(priv->gfargrp[i].interruptTransmit); | |
2887 | gfar_interrupt(priv->gfargrp[i].interruptTransmit, | |
2888 | &priv->gfargrp[i]); | |
2889 | enable_irq(priv->gfargrp[i].interruptTransmit); | |
43de004b | 2890 | } |
f2d71c2d VW |
2891 | } |
2892 | } | |
2893 | #endif | |
2894 | ||
1da177e4 | 2895 | /* The interrupt handler for devices with one interrupt */ |
f4983704 | 2896 | static irqreturn_t gfar_interrupt(int irq, void *grp_id) |
1da177e4 | 2897 | { |
f4983704 | 2898 | struct gfar_priv_grp *gfargrp = grp_id; |
1da177e4 LT |
2899 | |
2900 | /* Save ievent for future reference */ | |
f4983704 | 2901 | u32 events = gfar_read(&gfargrp->regs->ievent); |
1da177e4 | 2902 | |
1da177e4 | 2903 | /* Check for reception */ |
538cc7ee | 2904 | if (events & IEVENT_RX_MASK) |
f4983704 | 2905 | gfar_receive(irq, grp_id); |
1da177e4 LT |
2906 | |
2907 | /* Check for transmit completion */ | |
538cc7ee | 2908 | if (events & IEVENT_TX_MASK) |
f4983704 | 2909 | gfar_transmit(irq, grp_id); |
1da177e4 | 2910 | |
538cc7ee SS |
2911 | /* Check for errors */ |
2912 | if (events & IEVENT_ERR_MASK) | |
f4983704 | 2913 | gfar_error(irq, grp_id); |
1da177e4 LT |
2914 | |
2915 | return IRQ_HANDLED; | |
2916 | } | |
2917 | ||
1da177e4 LT |
2918 | /* Called every time the controller might need to be made |
2919 | * aware of new link state. The PHY code conveys this | |
bb40dcbb | 2920 | * information through variables in the phydev structure, and this |
1da177e4 LT |
2921 | * function converts those variables into the appropriate |
2922 | * register values, and can bring down the device if needed. | |
2923 | */ | |
2924 | static void adjust_link(struct net_device *dev) | |
2925 | { | |
2926 | struct gfar_private *priv = netdev_priv(dev); | |
46ceb60c | 2927 | struct gfar __iomem *regs = priv->gfargrp[0].regs; |
bb40dcbb AF |
2928 | unsigned long flags; |
2929 | struct phy_device *phydev = priv->phydev; | |
2930 | int new_state = 0; | |
2931 | ||
fba4ed03 SG |
2932 | local_irq_save(flags); |
2933 | lock_tx_qs(priv); | |
2934 | ||
bb40dcbb AF |
2935 | if (phydev->link) { |
2936 | u32 tempval = gfar_read(®s->maccfg2); | |
7f7f5316 | 2937 | u32 ecntrl = gfar_read(®s->ecntrl); |
1da177e4 | 2938 | |
1da177e4 LT |
2939 | /* Now we make sure that we can be in full duplex mode. |
2940 | * If not, we operate in half-duplex mode. */ | |
bb40dcbb AF |
2941 | if (phydev->duplex != priv->oldduplex) { |
2942 | new_state = 1; | |
2943 | if (!(phydev->duplex)) | |
1da177e4 | 2944 | tempval &= ~(MACCFG2_FULL_DUPLEX); |
bb40dcbb | 2945 | else |
1da177e4 | 2946 | tempval |= MACCFG2_FULL_DUPLEX; |
1da177e4 | 2947 | |
bb40dcbb | 2948 | priv->oldduplex = phydev->duplex; |
1da177e4 LT |
2949 | } |
2950 | ||
bb40dcbb AF |
2951 | if (phydev->speed != priv->oldspeed) { |
2952 | new_state = 1; | |
2953 | switch (phydev->speed) { | |
1da177e4 | 2954 | case 1000: |
1da177e4 LT |
2955 | tempval = |
2956 | ((tempval & ~(MACCFG2_IF)) | MACCFG2_GMII); | |
f430e49e LY |
2957 | |
2958 | ecntrl &= ~(ECNTRL_R100); | |
1da177e4 LT |
2959 | break; |
2960 | case 100: | |
2961 | case 10: | |
1da177e4 LT |
2962 | tempval = |
2963 | ((tempval & ~(MACCFG2_IF)) | MACCFG2_MII); | |
7f7f5316 AF |
2964 | |
2965 | /* Reduced mode distinguishes | |
2966 | * between 10 and 100 */ | |
2967 | if (phydev->speed == SPEED_100) | |
2968 | ecntrl |= ECNTRL_R100; | |
2969 | else | |
2970 | ecntrl &= ~(ECNTRL_R100); | |
1da177e4 LT |
2971 | break; |
2972 | default: | |
0bbaf069 KG |
2973 | if (netif_msg_link(priv)) |
2974 | printk(KERN_WARNING | |
bb40dcbb AF |
2975 | "%s: Ack! Speed (%d) is not 10/100/1000!\n", |
2976 | dev->name, phydev->speed); | |
1da177e4 LT |
2977 | break; |
2978 | } | |
2979 | ||
bb40dcbb | 2980 | priv->oldspeed = phydev->speed; |
1da177e4 LT |
2981 | } |
2982 | ||
bb40dcbb | 2983 | gfar_write(®s->maccfg2, tempval); |
7f7f5316 | 2984 | gfar_write(®s->ecntrl, ecntrl); |
bb40dcbb | 2985 | |
1da177e4 | 2986 | if (!priv->oldlink) { |
bb40dcbb | 2987 | new_state = 1; |
1da177e4 | 2988 | priv->oldlink = 1; |
1da177e4 | 2989 | } |
bb40dcbb AF |
2990 | } else if (priv->oldlink) { |
2991 | new_state = 1; | |
2992 | priv->oldlink = 0; | |
2993 | priv->oldspeed = 0; | |
2994 | priv->oldduplex = -1; | |
1da177e4 | 2995 | } |
1da177e4 | 2996 | |
bb40dcbb AF |
2997 | if (new_state && netif_msg_link(priv)) |
2998 | phy_print_status(phydev); | |
fba4ed03 SG |
2999 | unlock_tx_qs(priv); |
3000 | local_irq_restore(flags); | |
bb40dcbb | 3001 | } |
1da177e4 LT |
3002 | |
3003 | /* Update the hash table based on the current list of multicast | |
3004 | * addresses we subscribe to. Also, change the promiscuity of | |
3005 | * the device based on the flags (this function is called | |
3006 | * whenever dev->flags is changed */ | |
3007 | static void gfar_set_multi(struct net_device *dev) | |
3008 | { | |
22bedad3 | 3009 | struct netdev_hw_addr *ha; |
1da177e4 | 3010 | struct gfar_private *priv = netdev_priv(dev); |
46ceb60c | 3011 | struct gfar __iomem *regs = priv->gfargrp[0].regs; |
1da177e4 LT |
3012 | u32 tempval; |
3013 | ||
a12f801d | 3014 | if (dev->flags & IFF_PROMISC) { |
1da177e4 LT |
3015 | /* Set RCTRL to PROM */ |
3016 | tempval = gfar_read(®s->rctrl); | |
3017 | tempval |= RCTRL_PROM; | |
3018 | gfar_write(®s->rctrl, tempval); | |
3019 | } else { | |
3020 | /* Set RCTRL to not PROM */ | |
3021 | tempval = gfar_read(®s->rctrl); | |
3022 | tempval &= ~(RCTRL_PROM); | |
3023 | gfar_write(®s->rctrl, tempval); | |
3024 | } | |
6aa20a22 | 3025 | |
a12f801d | 3026 | if (dev->flags & IFF_ALLMULTI) { |
1da177e4 | 3027 | /* Set the hash to rx all multicast frames */ |
0bbaf069 KG |
3028 | gfar_write(®s->igaddr0, 0xffffffff); |
3029 | gfar_write(®s->igaddr1, 0xffffffff); | |
3030 | gfar_write(®s->igaddr2, 0xffffffff); | |
3031 | gfar_write(®s->igaddr3, 0xffffffff); | |
3032 | gfar_write(®s->igaddr4, 0xffffffff); | |
3033 | gfar_write(®s->igaddr5, 0xffffffff); | |
3034 | gfar_write(®s->igaddr6, 0xffffffff); | |
3035 | gfar_write(®s->igaddr7, 0xffffffff); | |
1da177e4 LT |
3036 | gfar_write(®s->gaddr0, 0xffffffff); |
3037 | gfar_write(®s->gaddr1, 0xffffffff); | |
3038 | gfar_write(®s->gaddr2, 0xffffffff); | |
3039 | gfar_write(®s->gaddr3, 0xffffffff); | |
3040 | gfar_write(®s->gaddr4, 0xffffffff); | |
3041 | gfar_write(®s->gaddr5, 0xffffffff); | |
3042 | gfar_write(®s->gaddr6, 0xffffffff); | |
3043 | gfar_write(®s->gaddr7, 0xffffffff); | |
3044 | } else { | |
7f7f5316 AF |
3045 | int em_num; |
3046 | int idx; | |
3047 | ||
1da177e4 | 3048 | /* zero out the hash */ |
0bbaf069 KG |
3049 | gfar_write(®s->igaddr0, 0x0); |
3050 | gfar_write(®s->igaddr1, 0x0); | |
3051 | gfar_write(®s->igaddr2, 0x0); | |
3052 | gfar_write(®s->igaddr3, 0x0); | |
3053 | gfar_write(®s->igaddr4, 0x0); | |
3054 | gfar_write(®s->igaddr5, 0x0); | |
3055 | gfar_write(®s->igaddr6, 0x0); | |
3056 | gfar_write(®s->igaddr7, 0x0); | |
1da177e4 LT |
3057 | gfar_write(®s->gaddr0, 0x0); |
3058 | gfar_write(®s->gaddr1, 0x0); | |
3059 | gfar_write(®s->gaddr2, 0x0); | |
3060 | gfar_write(®s->gaddr3, 0x0); | |
3061 | gfar_write(®s->gaddr4, 0x0); | |
3062 | gfar_write(®s->gaddr5, 0x0); | |
3063 | gfar_write(®s->gaddr6, 0x0); | |
3064 | gfar_write(®s->gaddr7, 0x0); | |
3065 | ||
7f7f5316 AF |
3066 | /* If we have extended hash tables, we need to |
3067 | * clear the exact match registers to prepare for | |
3068 | * setting them */ | |
3069 | if (priv->extended_hash) { | |
3070 | em_num = GFAR_EM_NUM + 1; | |
3071 | gfar_clear_exact_match(dev); | |
3072 | idx = 1; | |
3073 | } else { | |
3074 | idx = 0; | |
3075 | em_num = 0; | |
3076 | } | |
3077 | ||
4cd24eaf | 3078 | if (netdev_mc_empty(dev)) |
1da177e4 LT |
3079 | return; |
3080 | ||
3081 | /* Parse the list, and set the appropriate bits */ | |
22bedad3 | 3082 | netdev_for_each_mc_addr(ha, dev) { |
7f7f5316 | 3083 | if (idx < em_num) { |
22bedad3 | 3084 | gfar_set_mac_for_addr(dev, idx, ha->addr); |
7f7f5316 AF |
3085 | idx++; |
3086 | } else | |
22bedad3 | 3087 | gfar_set_hash_for_addr(dev, ha->addr); |
1da177e4 LT |
3088 | } |
3089 | } | |
1da177e4 LT |
3090 | } |
3091 | ||
7f7f5316 AF |
3092 | |
3093 | /* Clears each of the exact match registers to zero, so they | |
3094 | * don't interfere with normal reception */ | |
3095 | static void gfar_clear_exact_match(struct net_device *dev) | |
3096 | { | |
3097 | int idx; | |
3098 | u8 zero_arr[MAC_ADDR_LEN] = {0,0,0,0,0,0}; | |
3099 | ||
3100 | for(idx = 1;idx < GFAR_EM_NUM + 1;idx++) | |
3101 | gfar_set_mac_for_addr(dev, idx, (u8 *)zero_arr); | |
3102 | } | |
3103 | ||
1da177e4 LT |
3104 | /* Set the appropriate hash bit for the given addr */ |
3105 | /* The algorithm works like so: | |
3106 | * 1) Take the Destination Address (ie the multicast address), and | |
3107 | * do a CRC on it (little endian), and reverse the bits of the | |
3108 | * result. | |
3109 | * 2) Use the 8 most significant bits as a hash into a 256-entry | |
3110 | * table. The table is controlled through 8 32-bit registers: | |
3111 | * gaddr0-7. gaddr0's MSB is entry 0, and gaddr7's LSB is | |
3112 | * gaddr7. This means that the 3 most significant bits in the | |
3113 | * hash index which gaddr register to use, and the 5 other bits | |
3114 | * indicate which bit (assuming an IBM numbering scheme, which | |
3115 | * for PowerPC (tm) is usually the case) in the register holds | |
3116 | * the entry. */ | |
3117 | static void gfar_set_hash_for_addr(struct net_device *dev, u8 *addr) | |
3118 | { | |
3119 | u32 tempval; | |
3120 | struct gfar_private *priv = netdev_priv(dev); | |
1da177e4 | 3121 | u32 result = ether_crc(MAC_ADDR_LEN, addr); |
0bbaf069 KG |
3122 | int width = priv->hash_width; |
3123 | u8 whichbit = (result >> (32 - width)) & 0x1f; | |
3124 | u8 whichreg = result >> (32 - width + 5); | |
1da177e4 LT |
3125 | u32 value = (1 << (31-whichbit)); |
3126 | ||
0bbaf069 | 3127 | tempval = gfar_read(priv->hash_regs[whichreg]); |
1da177e4 | 3128 | tempval |= value; |
0bbaf069 | 3129 | gfar_write(priv->hash_regs[whichreg], tempval); |
1da177e4 LT |
3130 | } |
3131 | ||
7f7f5316 AF |
3132 | |
3133 | /* There are multiple MAC Address register pairs on some controllers | |
3134 | * This function sets the numth pair to a given address | |
3135 | */ | |
3136 | static void gfar_set_mac_for_addr(struct net_device *dev, int num, u8 *addr) | |
3137 | { | |
3138 | struct gfar_private *priv = netdev_priv(dev); | |
46ceb60c | 3139 | struct gfar __iomem *regs = priv->gfargrp[0].regs; |
7f7f5316 AF |
3140 | int idx; |
3141 | char tmpbuf[MAC_ADDR_LEN]; | |
3142 | u32 tempval; | |
f4983704 | 3143 | u32 __iomem *macptr = ®s->macstnaddr1; |
7f7f5316 AF |
3144 | |
3145 | macptr += num*2; | |
3146 | ||
3147 | /* Now copy it into the mac registers backwards, cuz */ | |
3148 | /* little endian is silly */ | |
3149 | for (idx = 0; idx < MAC_ADDR_LEN; idx++) | |
3150 | tmpbuf[MAC_ADDR_LEN - 1 - idx] = addr[idx]; | |
3151 | ||
3152 | gfar_write(macptr, *((u32 *) (tmpbuf))); | |
3153 | ||
3154 | tempval = *((u32 *) (tmpbuf + 4)); | |
3155 | ||
3156 | gfar_write(macptr+1, tempval); | |
3157 | } | |
3158 | ||
1da177e4 | 3159 | /* GFAR error interrupt handler */ |
f4983704 | 3160 | static irqreturn_t gfar_error(int irq, void *grp_id) |
1da177e4 | 3161 | { |
f4983704 SG |
3162 | struct gfar_priv_grp *gfargrp = grp_id; |
3163 | struct gfar __iomem *regs = gfargrp->regs; | |
3164 | struct gfar_private *priv= gfargrp->priv; | |
3165 | struct net_device *dev = priv->ndev; | |
1da177e4 LT |
3166 | |
3167 | /* Save ievent for future reference */ | |
f4983704 | 3168 | u32 events = gfar_read(®s->ievent); |
1da177e4 LT |
3169 | |
3170 | /* Clear IEVENT */ | |
f4983704 | 3171 | gfar_write(®s->ievent, events & IEVENT_ERR_MASK); |
d87eb127 SW |
3172 | |
3173 | /* Magic Packet is not an error. */ | |
b31a1d8b | 3174 | if ((priv->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET) && |
d87eb127 SW |
3175 | (events & IEVENT_MAG)) |
3176 | events &= ~IEVENT_MAG; | |
1da177e4 LT |
3177 | |
3178 | /* Hmm... */ | |
0bbaf069 KG |
3179 | if (netif_msg_rx_err(priv) || netif_msg_tx_err(priv)) |
3180 | printk(KERN_DEBUG "%s: error interrupt (ievent=0x%08x imask=0x%08x)\n", | |
f4983704 | 3181 | dev->name, events, gfar_read(®s->imask)); |
1da177e4 LT |
3182 | |
3183 | /* Update the error counters */ | |
3184 | if (events & IEVENT_TXE) { | |
09f75cd7 | 3185 | dev->stats.tx_errors++; |
1da177e4 LT |
3186 | |
3187 | if (events & IEVENT_LC) | |
09f75cd7 | 3188 | dev->stats.tx_window_errors++; |
1da177e4 | 3189 | if (events & IEVENT_CRL) |
09f75cd7 | 3190 | dev->stats.tx_aborted_errors++; |
1da177e4 | 3191 | if (events & IEVENT_XFUN) { |
836cf7fa AV |
3192 | unsigned long flags; |
3193 | ||
0bbaf069 | 3194 | if (netif_msg_tx_err(priv)) |
538cc7ee SS |
3195 | printk(KERN_DEBUG "%s: TX FIFO underrun, " |
3196 | "packet dropped.\n", dev->name); | |
09f75cd7 | 3197 | dev->stats.tx_dropped++; |
1da177e4 LT |
3198 | priv->extra_stats.tx_underrun++; |
3199 | ||
836cf7fa AV |
3200 | local_irq_save(flags); |
3201 | lock_tx_qs(priv); | |
3202 | ||
1da177e4 | 3203 | /* Reactivate the Tx Queues */ |
fba4ed03 | 3204 | gfar_write(®s->tstat, gfargrp->tstat); |
836cf7fa AV |
3205 | |
3206 | unlock_tx_qs(priv); | |
3207 | local_irq_restore(flags); | |
1da177e4 | 3208 | } |
0bbaf069 KG |
3209 | if (netif_msg_tx_err(priv)) |
3210 | printk(KERN_DEBUG "%s: Transmit Error\n", dev->name); | |
1da177e4 LT |
3211 | } |
3212 | if (events & IEVENT_BSY) { | |
09f75cd7 | 3213 | dev->stats.rx_errors++; |
1da177e4 LT |
3214 | priv->extra_stats.rx_bsy++; |
3215 | ||
f4983704 | 3216 | gfar_receive(irq, grp_id); |
1da177e4 | 3217 | |
0bbaf069 | 3218 | if (netif_msg_rx_err(priv)) |
538cc7ee | 3219 | printk(KERN_DEBUG "%s: busy error (rstat: %x)\n", |
f4983704 | 3220 | dev->name, gfar_read(®s->rstat)); |
1da177e4 LT |
3221 | } |
3222 | if (events & IEVENT_BABR) { | |
09f75cd7 | 3223 | dev->stats.rx_errors++; |
1da177e4 LT |
3224 | priv->extra_stats.rx_babr++; |
3225 | ||
0bbaf069 | 3226 | if (netif_msg_rx_err(priv)) |
538cc7ee | 3227 | printk(KERN_DEBUG "%s: babbling RX error\n", dev->name); |
1da177e4 LT |
3228 | } |
3229 | if (events & IEVENT_EBERR) { | |
3230 | priv->extra_stats.eberr++; | |
0bbaf069 | 3231 | if (netif_msg_rx_err(priv)) |
538cc7ee | 3232 | printk(KERN_DEBUG "%s: bus error\n", dev->name); |
1da177e4 | 3233 | } |
0bbaf069 | 3234 | if ((events & IEVENT_RXC) && netif_msg_rx_status(priv)) |
538cc7ee | 3235 | printk(KERN_DEBUG "%s: control frame\n", dev->name); |
1da177e4 LT |
3236 | |
3237 | if (events & IEVENT_BABT) { | |
3238 | priv->extra_stats.tx_babt++; | |
0bbaf069 | 3239 | if (netif_msg_tx_err(priv)) |
538cc7ee | 3240 | printk(KERN_DEBUG "%s: babbling TX error\n", dev->name); |
1da177e4 LT |
3241 | } |
3242 | return IRQ_HANDLED; | |
3243 | } | |
3244 | ||
b31a1d8b AF |
3245 | static struct of_device_id gfar_match[] = |
3246 | { | |
3247 | { | |
3248 | .type = "network", | |
3249 | .compatible = "gianfar", | |
3250 | }, | |
46ceb60c SG |
3251 | { |
3252 | .compatible = "fsl,etsec2", | |
3253 | }, | |
b31a1d8b AF |
3254 | {}, |
3255 | }; | |
e72701ac | 3256 | MODULE_DEVICE_TABLE(of, gfar_match); |
b31a1d8b | 3257 | |
1da177e4 | 3258 | /* Structure for a device driver */ |
b31a1d8b | 3259 | static struct of_platform_driver gfar_driver = { |
4018294b GL |
3260 | .driver = { |
3261 | .name = "fsl-gianfar", | |
3262 | .owner = THIS_MODULE, | |
3263 | .pm = GFAR_PM_OPS, | |
3264 | .of_match_table = gfar_match, | |
3265 | }, | |
1da177e4 LT |
3266 | .probe = gfar_probe, |
3267 | .remove = gfar_remove, | |
3268 | }; | |
3269 | ||
3270 | static int __init gfar_init(void) | |
3271 | { | |
1577ecef | 3272 | return of_register_platform_driver(&gfar_driver); |
1da177e4 LT |
3273 | } |
3274 | ||
3275 | static void __exit gfar_exit(void) | |
3276 | { | |
b31a1d8b | 3277 | of_unregister_platform_driver(&gfar_driver); |
1da177e4 LT |
3278 | } |
3279 | ||
3280 | module_init(gfar_init); | |
3281 | module_exit(gfar_exit); | |
3282 |