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Commit | Line | Data |
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0977f817 | 1 | /* drivers/net/ethernet/freescale/gianfar.c |
1da177e4 LT |
2 | * |
3 | * Gianfar Ethernet Driver | |
7f7f5316 AF |
4 | * This driver is designed for the non-CPM ethernet controllers |
5 | * on the 85xx and 83xx family of integrated processors | |
1da177e4 LT |
6 | * Based on 8260_io/fcc_enet.c |
7 | * | |
8 | * Author: Andy Fleming | |
4c8d3d99 | 9 | * Maintainer: Kumar Gala |
a12f801d | 10 | * Modifier: Sandeep Gopalpet <sandeep.kumar@freescale.com> |
1da177e4 | 11 | * |
20862788 | 12 | * Copyright 2002-2009, 2011-2013 Freescale Semiconductor, Inc. |
a12f801d | 13 | * Copyright 2007 MontaVista Software, Inc. |
1da177e4 LT |
14 | * |
15 | * This program is free software; you can redistribute it and/or modify it | |
16 | * under the terms of the GNU General Public License as published by the | |
17 | * Free Software Foundation; either version 2 of the License, or (at your | |
18 | * option) any later version. | |
19 | * | |
20 | * Gianfar: AKA Lambda Draconis, "Dragon" | |
21 | * RA 11 31 24.2 | |
22 | * Dec +69 19 52 | |
23 | * V 3.84 | |
24 | * B-V +1.62 | |
25 | * | |
26 | * Theory of operation | |
0bbaf069 | 27 | * |
b31a1d8b AF |
28 | * The driver is initialized through of_device. Configuration information |
29 | * is therefore conveyed through an OF-style device tree. | |
1da177e4 LT |
30 | * |
31 | * The Gianfar Ethernet Controller uses a ring of buffer | |
32 | * descriptors. The beginning is indicated by a register | |
0bbaf069 KG |
33 | * pointing to the physical address of the start of the ring. |
34 | * The end is determined by a "wrap" bit being set in the | |
1da177e4 LT |
35 | * last descriptor of the ring. |
36 | * | |
37 | * When a packet is received, the RXF bit in the | |
0bbaf069 | 38 | * IEVENT register is set, triggering an interrupt when the |
1da177e4 LT |
39 | * corresponding bit in the IMASK register is also set (if |
40 | * interrupt coalescing is active, then the interrupt may not | |
41 | * happen immediately, but will wait until either a set number | |
bb40dcbb | 42 | * of frames or amount of time have passed). In NAPI, the |
1da177e4 | 43 | * interrupt handler will signal there is work to be done, and |
0aa1538f | 44 | * exit. This method will start at the last known empty |
0bbaf069 | 45 | * descriptor, and process every subsequent descriptor until there |
1da177e4 LT |
46 | * are none left with data (NAPI will stop after a set number of |
47 | * packets to give time to other tasks, but will eventually | |
48 | * process all the packets). The data arrives inside a | |
49 | * pre-allocated skb, and so after the skb is passed up to the | |
50 | * stack, a new skb must be allocated, and the address field in | |
51 | * the buffer descriptor must be updated to indicate this new | |
52 | * skb. | |
53 | * | |
54 | * When the kernel requests that a packet be transmitted, the | |
55 | * driver starts where it left off last time, and points the | |
56 | * descriptor at the buffer which was passed in. The driver | |
57 | * then informs the DMA engine that there are packets ready to | |
58 | * be transmitted. Once the controller is finished transmitting | |
59 | * the packet, an interrupt may be triggered (under the same | |
60 | * conditions as for reception, but depending on the TXF bit). | |
61 | * The driver then cleans up the buffer. | |
62 | */ | |
63 | ||
59deab26 JP |
64 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
65 | #define DEBUG | |
66 | ||
1da177e4 | 67 | #include <linux/kernel.h> |
1da177e4 LT |
68 | #include <linux/string.h> |
69 | #include <linux/errno.h> | |
bb40dcbb | 70 | #include <linux/unistd.h> |
1da177e4 LT |
71 | #include <linux/slab.h> |
72 | #include <linux/interrupt.h> | |
1da177e4 LT |
73 | #include <linux/delay.h> |
74 | #include <linux/netdevice.h> | |
75 | #include <linux/etherdevice.h> | |
76 | #include <linux/skbuff.h> | |
0bbaf069 | 77 | #include <linux/if_vlan.h> |
1da177e4 LT |
78 | #include <linux/spinlock.h> |
79 | #include <linux/mm.h> | |
5af50730 RH |
80 | #include <linux/of_address.h> |
81 | #include <linux/of_irq.h> | |
fe192a49 | 82 | #include <linux/of_mdio.h> |
b31a1d8b | 83 | #include <linux/of_platform.h> |
0bbaf069 KG |
84 | #include <linux/ip.h> |
85 | #include <linux/tcp.h> | |
86 | #include <linux/udp.h> | |
9c07b884 | 87 | #include <linux/in.h> |
cc772ab7 | 88 | #include <linux/net_tstamp.h> |
1da177e4 LT |
89 | |
90 | #include <asm/io.h> | |
d6ef0bcc | 91 | #ifdef CONFIG_PPC |
7d350977 | 92 | #include <asm/reg.h> |
2969b1f7 | 93 | #include <asm/mpc85xx.h> |
d6ef0bcc | 94 | #endif |
1da177e4 LT |
95 | #include <asm/irq.h> |
96 | #include <asm/uaccess.h> | |
97 | #include <linux/module.h> | |
1da177e4 LT |
98 | #include <linux/dma-mapping.h> |
99 | #include <linux/crc32.h> | |
bb40dcbb AF |
100 | #include <linux/mii.h> |
101 | #include <linux/phy.h> | |
b31a1d8b AF |
102 | #include <linux/phy_fixed.h> |
103 | #include <linux/of.h> | |
4b6ba8aa | 104 | #include <linux/of_net.h> |
fd31a952 CM |
105 | #include <linux/of_address.h> |
106 | #include <linux/of_irq.h> | |
1da177e4 LT |
107 | |
108 | #include "gianfar.h" | |
1da177e4 LT |
109 | |
110 | #define TX_TIMEOUT (1*HZ) | |
1da177e4 | 111 | |
7f7f5316 | 112 | const char gfar_driver_version[] = "1.3"; |
1da177e4 | 113 | |
1da177e4 LT |
114 | static int gfar_enet_open(struct net_device *dev); |
115 | static int gfar_start_xmit(struct sk_buff *skb, struct net_device *dev); | |
ab939905 | 116 | static void gfar_reset_task(struct work_struct *work); |
1da177e4 LT |
117 | static void gfar_timeout(struct net_device *dev); |
118 | static int gfar_close(struct net_device *dev); | |
91c53f76 KH |
119 | static struct sk_buff *gfar_new_skb(struct net_device *dev, |
120 | dma_addr_t *bufaddr); | |
1da177e4 LT |
121 | static int gfar_set_mac_address(struct net_device *dev); |
122 | static int gfar_change_mtu(struct net_device *dev, int new_mtu); | |
7d12e780 DH |
123 | static irqreturn_t gfar_error(int irq, void *dev_id); |
124 | static irqreturn_t gfar_transmit(int irq, void *dev_id); | |
125 | static irqreturn_t gfar_interrupt(int irq, void *dev_id); | |
1da177e4 | 126 | static void adjust_link(struct net_device *dev); |
6ce29b0e | 127 | static noinline void gfar_update_link_state(struct gfar_private *priv); |
1da177e4 | 128 | static int init_phy(struct net_device *dev); |
74888760 | 129 | static int gfar_probe(struct platform_device *ofdev); |
2dc11581 | 130 | static int gfar_remove(struct platform_device *ofdev); |
bb40dcbb | 131 | static void free_skb_resources(struct gfar_private *priv); |
1da177e4 LT |
132 | static void gfar_set_multi(struct net_device *dev); |
133 | static void gfar_set_hash_for_addr(struct net_device *dev, u8 *addr); | |
d3c12873 | 134 | static void gfar_configure_serdes(struct net_device *dev); |
aeb12c5e CM |
135 | static int gfar_poll_rx(struct napi_struct *napi, int budget); |
136 | static int gfar_poll_tx(struct napi_struct *napi, int budget); | |
137 | static int gfar_poll_rx_sq(struct napi_struct *napi, int budget); | |
138 | static int gfar_poll_tx_sq(struct napi_struct *napi, int budget); | |
f2d71c2d VW |
139 | #ifdef CONFIG_NET_POLL_CONTROLLER |
140 | static void gfar_netpoll(struct net_device *dev); | |
141 | #endif | |
a12f801d | 142 | int gfar_clean_rx_ring(struct gfar_priv_rx_q *rx_queue, int rx_work_limit); |
c233cf40 | 143 | static void gfar_clean_tx_ring(struct gfar_priv_tx_q *tx_queue); |
61db26c6 CM |
144 | static void gfar_process_frame(struct net_device *dev, struct sk_buff *skb, |
145 | int amount_pull, struct napi_struct *napi); | |
c10650b6 | 146 | static void gfar_halt_nodisable(struct gfar_private *priv); |
7f7f5316 | 147 | static void gfar_clear_exact_match(struct net_device *dev); |
b6bc7650 JP |
148 | static void gfar_set_mac_for_addr(struct net_device *dev, int num, |
149 | const u8 *addr); | |
26ccfc37 | 150 | static int gfar_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); |
1da177e4 | 151 | |
1da177e4 LT |
152 | MODULE_AUTHOR("Freescale Semiconductor, Inc"); |
153 | MODULE_DESCRIPTION("Gianfar Ethernet Driver"); | |
154 | MODULE_LICENSE("GPL"); | |
155 | ||
a12f801d | 156 | static void gfar_init_rxbdp(struct gfar_priv_rx_q *rx_queue, struct rxbd8 *bdp, |
8a102fe0 AV |
157 | dma_addr_t buf) |
158 | { | |
8a102fe0 AV |
159 | u32 lstatus; |
160 | ||
a7312d58 | 161 | bdp->bufPtr = cpu_to_be32(buf); |
8a102fe0 AV |
162 | |
163 | lstatus = BD_LFLAG(RXBD_EMPTY | RXBD_INTERRUPT); | |
a12f801d | 164 | if (bdp == rx_queue->rx_bd_base + rx_queue->rx_ring_size - 1) |
8a102fe0 AV |
165 | lstatus |= BD_LFLAG(RXBD_WRAP); |
166 | ||
d55398ba | 167 | gfar_wmb(); |
8a102fe0 | 168 | |
a7312d58 | 169 | bdp->lstatus = cpu_to_be32(lstatus); |
8a102fe0 AV |
170 | } |
171 | ||
8728327e | 172 | static int gfar_init_bds(struct net_device *ndev) |
826aa4a0 | 173 | { |
8728327e | 174 | struct gfar_private *priv = netdev_priv(ndev); |
45b679c9 | 175 | struct gfar __iomem *regs = priv->gfargrp[0].regs; |
a12f801d SG |
176 | struct gfar_priv_tx_q *tx_queue = NULL; |
177 | struct gfar_priv_rx_q *rx_queue = NULL; | |
826aa4a0 AV |
178 | struct txbd8 *txbdp; |
179 | struct rxbd8 *rxbdp; | |
03366a33 | 180 | u32 __iomem *rfbptr; |
fba4ed03 | 181 | int i, j; |
0a4b5a24 | 182 | dma_addr_t bufaddr; |
a12f801d | 183 | |
fba4ed03 SG |
184 | for (i = 0; i < priv->num_tx_queues; i++) { |
185 | tx_queue = priv->tx_queue[i]; | |
186 | /* Initialize some variables in our dev structure */ | |
187 | tx_queue->num_txbdfree = tx_queue->tx_ring_size; | |
188 | tx_queue->dirty_tx = tx_queue->tx_bd_base; | |
189 | tx_queue->cur_tx = tx_queue->tx_bd_base; | |
190 | tx_queue->skb_curtx = 0; | |
191 | tx_queue->skb_dirtytx = 0; | |
192 | ||
193 | /* Initialize Transmit Descriptor Ring */ | |
194 | txbdp = tx_queue->tx_bd_base; | |
195 | for (j = 0; j < tx_queue->tx_ring_size; j++) { | |
196 | txbdp->lstatus = 0; | |
197 | txbdp->bufPtr = 0; | |
198 | txbdp++; | |
199 | } | |
8728327e | 200 | |
fba4ed03 SG |
201 | /* Set the last descriptor in the ring to indicate wrap */ |
202 | txbdp--; | |
a7312d58 CM |
203 | txbdp->status = cpu_to_be16(be16_to_cpu(txbdp->status) | |
204 | TXBD_WRAP); | |
8728327e AV |
205 | } |
206 | ||
45b679c9 | 207 | rfbptr = ®s->rfbptr0; |
fba4ed03 SG |
208 | for (i = 0; i < priv->num_rx_queues; i++) { |
209 | rx_queue = priv->rx_queue[i]; | |
210 | rx_queue->cur_rx = rx_queue->rx_bd_base; | |
211 | rx_queue->skb_currx = 0; | |
212 | rxbdp = rx_queue->rx_bd_base; | |
8728327e | 213 | |
fba4ed03 SG |
214 | for (j = 0; j < rx_queue->rx_ring_size; j++) { |
215 | struct sk_buff *skb = rx_queue->rx_skbuff[j]; | |
8728327e | 216 | |
fba4ed03 | 217 | if (skb) { |
a7312d58 | 218 | bufaddr = be32_to_cpu(rxbdp->bufPtr); |
fba4ed03 | 219 | } else { |
0a4b5a24 | 220 | skb = gfar_new_skb(ndev, &bufaddr); |
fba4ed03 | 221 | if (!skb) { |
59deab26 | 222 | netdev_err(ndev, "Can't allocate RX buffers\n"); |
1eb8f7a7 | 223 | return -ENOMEM; |
fba4ed03 SG |
224 | } |
225 | rx_queue->rx_skbuff[j] = skb; | |
8728327e | 226 | } |
8728327e | 227 | |
0a4b5a24 | 228 | gfar_init_rxbdp(rx_queue, rxbdp, bufaddr); |
fba4ed03 | 229 | rxbdp++; |
8728327e AV |
230 | } |
231 | ||
45b679c9 MP |
232 | rx_queue->rfbptr = rfbptr; |
233 | rfbptr += 2; | |
8728327e AV |
234 | } |
235 | ||
236 | return 0; | |
237 | } | |
238 | ||
239 | static int gfar_alloc_skb_resources(struct net_device *ndev) | |
240 | { | |
826aa4a0 | 241 | void *vaddr; |
fba4ed03 SG |
242 | dma_addr_t addr; |
243 | int i, j, k; | |
826aa4a0 | 244 | struct gfar_private *priv = netdev_priv(ndev); |
369ec162 | 245 | struct device *dev = priv->dev; |
a12f801d SG |
246 | struct gfar_priv_tx_q *tx_queue = NULL; |
247 | struct gfar_priv_rx_q *rx_queue = NULL; | |
248 | ||
fba4ed03 SG |
249 | priv->total_tx_ring_size = 0; |
250 | for (i = 0; i < priv->num_tx_queues; i++) | |
251 | priv->total_tx_ring_size += priv->tx_queue[i]->tx_ring_size; | |
252 | ||
253 | priv->total_rx_ring_size = 0; | |
254 | for (i = 0; i < priv->num_rx_queues; i++) | |
255 | priv->total_rx_ring_size += priv->rx_queue[i]->rx_ring_size; | |
826aa4a0 AV |
256 | |
257 | /* Allocate memory for the buffer descriptors */ | |
8728327e | 258 | vaddr = dma_alloc_coherent(dev, |
d0320f75 JP |
259 | (priv->total_tx_ring_size * |
260 | sizeof(struct txbd8)) + | |
261 | (priv->total_rx_ring_size * | |
262 | sizeof(struct rxbd8)), | |
263 | &addr, GFP_KERNEL); | |
264 | if (!vaddr) | |
826aa4a0 | 265 | return -ENOMEM; |
826aa4a0 | 266 | |
fba4ed03 SG |
267 | for (i = 0; i < priv->num_tx_queues; i++) { |
268 | tx_queue = priv->tx_queue[i]; | |
43d620c8 | 269 | tx_queue->tx_bd_base = vaddr; |
fba4ed03 SG |
270 | tx_queue->tx_bd_dma_base = addr; |
271 | tx_queue->dev = ndev; | |
272 | /* enet DMA only understands physical addresses */ | |
bc4598bc JC |
273 | addr += sizeof(struct txbd8) * tx_queue->tx_ring_size; |
274 | vaddr += sizeof(struct txbd8) * tx_queue->tx_ring_size; | |
fba4ed03 | 275 | } |
826aa4a0 | 276 | |
826aa4a0 | 277 | /* Start the rx descriptor ring where the tx ring leaves off */ |
fba4ed03 SG |
278 | for (i = 0; i < priv->num_rx_queues; i++) { |
279 | rx_queue = priv->rx_queue[i]; | |
43d620c8 | 280 | rx_queue->rx_bd_base = vaddr; |
fba4ed03 SG |
281 | rx_queue->rx_bd_dma_base = addr; |
282 | rx_queue->dev = ndev; | |
bc4598bc JC |
283 | addr += sizeof(struct rxbd8) * rx_queue->rx_ring_size; |
284 | vaddr += sizeof(struct rxbd8) * rx_queue->rx_ring_size; | |
fba4ed03 | 285 | } |
826aa4a0 AV |
286 | |
287 | /* Setup the skbuff rings */ | |
fba4ed03 SG |
288 | for (i = 0; i < priv->num_tx_queues; i++) { |
289 | tx_queue = priv->tx_queue[i]; | |
14f8dc49 JP |
290 | tx_queue->tx_skbuff = |
291 | kmalloc_array(tx_queue->tx_ring_size, | |
292 | sizeof(*tx_queue->tx_skbuff), | |
293 | GFP_KERNEL); | |
294 | if (!tx_queue->tx_skbuff) | |
fba4ed03 | 295 | goto cleanup; |
826aa4a0 | 296 | |
fba4ed03 SG |
297 | for (k = 0; k < tx_queue->tx_ring_size; k++) |
298 | tx_queue->tx_skbuff[k] = NULL; | |
299 | } | |
826aa4a0 | 300 | |
fba4ed03 SG |
301 | for (i = 0; i < priv->num_rx_queues; i++) { |
302 | rx_queue = priv->rx_queue[i]; | |
14f8dc49 JP |
303 | rx_queue->rx_skbuff = |
304 | kmalloc_array(rx_queue->rx_ring_size, | |
305 | sizeof(*rx_queue->rx_skbuff), | |
306 | GFP_KERNEL); | |
307 | if (!rx_queue->rx_skbuff) | |
fba4ed03 | 308 | goto cleanup; |
fba4ed03 SG |
309 | |
310 | for (j = 0; j < rx_queue->rx_ring_size; j++) | |
311 | rx_queue->rx_skbuff[j] = NULL; | |
312 | } | |
826aa4a0 | 313 | |
8728327e AV |
314 | if (gfar_init_bds(ndev)) |
315 | goto cleanup; | |
826aa4a0 AV |
316 | |
317 | return 0; | |
318 | ||
319 | cleanup: | |
320 | free_skb_resources(priv); | |
321 | return -ENOMEM; | |
322 | } | |
323 | ||
fba4ed03 SG |
324 | static void gfar_init_tx_rx_base(struct gfar_private *priv) |
325 | { | |
46ceb60c | 326 | struct gfar __iomem *regs = priv->gfargrp[0].regs; |
18294ad1 | 327 | u32 __iomem *baddr; |
fba4ed03 SG |
328 | int i; |
329 | ||
330 | baddr = ®s->tbase0; | |
bc4598bc | 331 | for (i = 0; i < priv->num_tx_queues; i++) { |
fba4ed03 | 332 | gfar_write(baddr, priv->tx_queue[i]->tx_bd_dma_base); |
bc4598bc | 333 | baddr += 2; |
fba4ed03 SG |
334 | } |
335 | ||
336 | baddr = ®s->rbase0; | |
bc4598bc | 337 | for (i = 0; i < priv->num_rx_queues; i++) { |
fba4ed03 | 338 | gfar_write(baddr, priv->rx_queue[i]->rx_bd_dma_base); |
bc4598bc | 339 | baddr += 2; |
fba4ed03 SG |
340 | } |
341 | } | |
342 | ||
45b679c9 MP |
343 | static void gfar_init_rqprm(struct gfar_private *priv) |
344 | { | |
345 | struct gfar __iomem *regs = priv->gfargrp[0].regs; | |
346 | u32 __iomem *baddr; | |
347 | int i; | |
348 | ||
349 | baddr = ®s->rqprm0; | |
350 | for (i = 0; i < priv->num_rx_queues; i++) { | |
351 | gfar_write(baddr, priv->rx_queue[i]->rx_ring_size | | |
352 | (DEFAULT_RX_LFC_THR << FBTHR_SHIFT)); | |
353 | baddr++; | |
354 | } | |
355 | } | |
356 | ||
88302648 | 357 | static void gfar_rx_buff_size_config(struct gfar_private *priv) |
826aa4a0 | 358 | { |
f5b720b8 | 359 | int frame_size = priv->ndev->mtu + ETH_HLEN + ETH_FCS_LEN; |
fba4ed03 | 360 | |
ba779711 CM |
361 | /* set this when rx hw offload (TOE) functions are being used */ |
362 | priv->uses_rxfcb = 0; | |
363 | ||
88302648 CM |
364 | if (priv->ndev->features & (NETIF_F_RXCSUM | NETIF_F_HW_VLAN_CTAG_RX)) |
365 | priv->uses_rxfcb = 1; | |
366 | ||
367 | if (priv->hwts_rx_en) | |
368 | priv->uses_rxfcb = 1; | |
369 | ||
370 | if (priv->uses_rxfcb) | |
371 | frame_size += GMAC_FCB_LEN; | |
372 | ||
373 | frame_size += priv->padding; | |
374 | ||
375 | frame_size = (frame_size & ~(INCREMENTAL_BUFFER_SIZE - 1)) + | |
376 | INCREMENTAL_BUFFER_SIZE; | |
377 | ||
378 | priv->rx_buffer_size = frame_size; | |
379 | } | |
380 | ||
381 | static void gfar_mac_rx_config(struct gfar_private *priv) | |
382 | { | |
383 | struct gfar __iomem *regs = priv->gfargrp[0].regs; | |
384 | u32 rctrl = 0; | |
385 | ||
1ccb8389 | 386 | if (priv->rx_filer_enable) { |
fba4ed03 | 387 | rctrl |= RCTRL_FILREN; |
1ccb8389 | 388 | /* Program the RIR0 reg with the required distribution */ |
71ff9e3d CM |
389 | if (priv->poll_mode == GFAR_SQ_POLLING) |
390 | gfar_write(®s->rir0, DEFAULT_2RXQ_RIR0); | |
391 | else /* GFAR_MQ_POLLING */ | |
392 | gfar_write(®s->rir0, DEFAULT_8RXQ_RIR0); | |
1ccb8389 | 393 | } |
826aa4a0 | 394 | |
f5ae6279 | 395 | /* Restore PROMISC mode */ |
a328ac92 | 396 | if (priv->ndev->flags & IFF_PROMISC) |
f5ae6279 CM |
397 | rctrl |= RCTRL_PROM; |
398 | ||
88302648 | 399 | if (priv->ndev->features & NETIF_F_RXCSUM) |
826aa4a0 AV |
400 | rctrl |= RCTRL_CHECKSUMMING; |
401 | ||
88302648 CM |
402 | if (priv->extended_hash) |
403 | rctrl |= RCTRL_EXTHASH | RCTRL_EMEN; | |
826aa4a0 AV |
404 | |
405 | if (priv->padding) { | |
406 | rctrl &= ~RCTRL_PAL_MASK; | |
407 | rctrl |= RCTRL_PADDING(priv->padding); | |
408 | } | |
409 | ||
97553f7f | 410 | /* Enable HW time stamping if requested from user space */ |
88302648 | 411 | if (priv->hwts_rx_en) |
97553f7f MR |
412 | rctrl |= RCTRL_PRSDEP_INIT | RCTRL_TS_ENABLE; |
413 | ||
88302648 | 414 | if (priv->ndev->features & NETIF_F_HW_VLAN_CTAG_RX) |
b852b720 | 415 | rctrl |= RCTRL_VLEX | RCTRL_PRSDEP_INIT; |
826aa4a0 | 416 | |
45b679c9 MP |
417 | /* Clear the LFC bit */ |
418 | gfar_write(®s->rctrl, rctrl); | |
419 | /* Init flow control threshold values */ | |
420 | gfar_init_rqprm(priv); | |
421 | gfar_write(®s->ptv, DEFAULT_LFC_PTVVAL); | |
422 | rctrl |= RCTRL_LFC; | |
423 | ||
826aa4a0 AV |
424 | /* Init rctrl based on our settings */ |
425 | gfar_write(®s->rctrl, rctrl); | |
a328ac92 | 426 | } |
826aa4a0 | 427 | |
a328ac92 CM |
428 | static void gfar_mac_tx_config(struct gfar_private *priv) |
429 | { | |
430 | struct gfar __iomem *regs = priv->gfargrp[0].regs; | |
431 | u32 tctrl = 0; | |
432 | ||
433 | if (priv->ndev->features & NETIF_F_IP_CSUM) | |
826aa4a0 AV |
434 | tctrl |= TCTRL_INIT_CSUM; |
435 | ||
b98b8bab CM |
436 | if (priv->prio_sched_en) |
437 | tctrl |= TCTRL_TXSCHED_PRIO; | |
438 | else { | |
439 | tctrl |= TCTRL_TXSCHED_WRRS; | |
440 | gfar_write(®s->tr03wt, DEFAULT_WRRS_WEIGHT); | |
441 | gfar_write(®s->tr47wt, DEFAULT_WRRS_WEIGHT); | |
442 | } | |
fba4ed03 | 443 | |
88302648 CM |
444 | if (priv->ndev->features & NETIF_F_HW_VLAN_CTAG_TX) |
445 | tctrl |= TCTRL_VLINS; | |
446 | ||
826aa4a0 | 447 | gfar_write(®s->tctrl, tctrl); |
826aa4a0 AV |
448 | } |
449 | ||
f19015ba CM |
450 | static void gfar_configure_coalescing(struct gfar_private *priv, |
451 | unsigned long tx_mask, unsigned long rx_mask) | |
452 | { | |
453 | struct gfar __iomem *regs = priv->gfargrp[0].regs; | |
454 | u32 __iomem *baddr; | |
455 | ||
456 | if (priv->mode == MQ_MG_MODE) { | |
457 | int i = 0; | |
458 | ||
459 | baddr = ®s->txic0; | |
460 | for_each_set_bit(i, &tx_mask, priv->num_tx_queues) { | |
461 | gfar_write(baddr + i, 0); | |
462 | if (likely(priv->tx_queue[i]->txcoalescing)) | |
463 | gfar_write(baddr + i, priv->tx_queue[i]->txic); | |
464 | } | |
465 | ||
466 | baddr = ®s->rxic0; | |
467 | for_each_set_bit(i, &rx_mask, priv->num_rx_queues) { | |
468 | gfar_write(baddr + i, 0); | |
469 | if (likely(priv->rx_queue[i]->rxcoalescing)) | |
470 | gfar_write(baddr + i, priv->rx_queue[i]->rxic); | |
471 | } | |
472 | } else { | |
473 | /* Backward compatible case -- even if we enable | |
474 | * multiple queues, there's only single reg to program | |
475 | */ | |
476 | gfar_write(®s->txic, 0); | |
477 | if (likely(priv->tx_queue[0]->txcoalescing)) | |
478 | gfar_write(®s->txic, priv->tx_queue[0]->txic); | |
479 | ||
480 | gfar_write(®s->rxic, 0); | |
481 | if (unlikely(priv->rx_queue[0]->rxcoalescing)) | |
482 | gfar_write(®s->rxic, priv->rx_queue[0]->rxic); | |
483 | } | |
484 | } | |
485 | ||
486 | void gfar_configure_coalescing_all(struct gfar_private *priv) | |
487 | { | |
488 | gfar_configure_coalescing(priv, 0xFF, 0xFF); | |
489 | } | |
490 | ||
a7f38041 SG |
491 | static struct net_device_stats *gfar_get_stats(struct net_device *dev) |
492 | { | |
493 | struct gfar_private *priv = netdev_priv(dev); | |
a7f38041 SG |
494 | unsigned long rx_packets = 0, rx_bytes = 0, rx_dropped = 0; |
495 | unsigned long tx_packets = 0, tx_bytes = 0; | |
3a2e16c8 | 496 | int i; |
a7f38041 SG |
497 | |
498 | for (i = 0; i < priv->num_rx_queues; i++) { | |
499 | rx_packets += priv->rx_queue[i]->stats.rx_packets; | |
bc4598bc | 500 | rx_bytes += priv->rx_queue[i]->stats.rx_bytes; |
a7f38041 SG |
501 | rx_dropped += priv->rx_queue[i]->stats.rx_dropped; |
502 | } | |
503 | ||
504 | dev->stats.rx_packets = rx_packets; | |
bc4598bc | 505 | dev->stats.rx_bytes = rx_bytes; |
a7f38041 SG |
506 | dev->stats.rx_dropped = rx_dropped; |
507 | ||
508 | for (i = 0; i < priv->num_tx_queues; i++) { | |
1ac9ad13 ED |
509 | tx_bytes += priv->tx_queue[i]->stats.tx_bytes; |
510 | tx_packets += priv->tx_queue[i]->stats.tx_packets; | |
a7f38041 SG |
511 | } |
512 | ||
bc4598bc | 513 | dev->stats.tx_bytes = tx_bytes; |
a7f38041 SG |
514 | dev->stats.tx_packets = tx_packets; |
515 | ||
516 | return &dev->stats; | |
517 | } | |
518 | ||
3d23a05c CM |
519 | static int gfar_set_mac_addr(struct net_device *dev, void *p) |
520 | { | |
521 | eth_mac_addr(dev, p); | |
522 | ||
523 | gfar_set_mac_for_addr(dev, 0, dev->dev_addr); | |
524 | ||
525 | return 0; | |
526 | } | |
527 | ||
26ccfc37 AF |
528 | static const struct net_device_ops gfar_netdev_ops = { |
529 | .ndo_open = gfar_enet_open, | |
530 | .ndo_start_xmit = gfar_start_xmit, | |
531 | .ndo_stop = gfar_close, | |
532 | .ndo_change_mtu = gfar_change_mtu, | |
8b3afe95 | 533 | .ndo_set_features = gfar_set_features, |
afc4b13d | 534 | .ndo_set_rx_mode = gfar_set_multi, |
26ccfc37 AF |
535 | .ndo_tx_timeout = gfar_timeout, |
536 | .ndo_do_ioctl = gfar_ioctl, | |
a7f38041 | 537 | .ndo_get_stats = gfar_get_stats, |
3d23a05c | 538 | .ndo_set_mac_address = gfar_set_mac_addr, |
240c102d | 539 | .ndo_validate_addr = eth_validate_addr, |
26ccfc37 AF |
540 | #ifdef CONFIG_NET_POLL_CONTROLLER |
541 | .ndo_poll_controller = gfar_netpoll, | |
542 | #endif | |
543 | }; | |
544 | ||
efeddce7 CM |
545 | static void gfar_ints_disable(struct gfar_private *priv) |
546 | { | |
547 | int i; | |
548 | for (i = 0; i < priv->num_grps; i++) { | |
549 | struct gfar __iomem *regs = priv->gfargrp[i].regs; | |
550 | /* Clear IEVENT */ | |
551 | gfar_write(®s->ievent, IEVENT_INIT_CLEAR); | |
552 | ||
553 | /* Initialize IMASK */ | |
554 | gfar_write(®s->imask, IMASK_INIT_CLEAR); | |
555 | } | |
556 | } | |
557 | ||
558 | static void gfar_ints_enable(struct gfar_private *priv) | |
559 | { | |
560 | int i; | |
561 | for (i = 0; i < priv->num_grps; i++) { | |
562 | struct gfar __iomem *regs = priv->gfargrp[i].regs; | |
563 | /* Unmask the interrupts we look for */ | |
564 | gfar_write(®s->imask, IMASK_DEFAULT); | |
565 | } | |
566 | } | |
567 | ||
84868305 | 568 | #ifdef CONFIG_PM |
91c53f76 | 569 | static void lock_tx_qs(struct gfar_private *priv) |
fba4ed03 | 570 | { |
3a2e16c8 | 571 | int i; |
fba4ed03 SG |
572 | |
573 | for (i = 0; i < priv->num_tx_queues; i++) | |
574 | spin_lock(&priv->tx_queue[i]->txlock); | |
575 | } | |
576 | ||
91c53f76 | 577 | static void unlock_tx_qs(struct gfar_private *priv) |
fba4ed03 | 578 | { |
3a2e16c8 | 579 | int i; |
fba4ed03 SG |
580 | |
581 | for (i = 0; i < priv->num_tx_queues; i++) | |
582 | spin_unlock(&priv->tx_queue[i]->txlock); | |
583 | } | |
84868305 | 584 | #endif |
fba4ed03 | 585 | |
20862788 CM |
586 | static int gfar_alloc_tx_queues(struct gfar_private *priv) |
587 | { | |
588 | int i; | |
589 | ||
590 | for (i = 0; i < priv->num_tx_queues; i++) { | |
591 | priv->tx_queue[i] = kzalloc(sizeof(struct gfar_priv_tx_q), | |
592 | GFP_KERNEL); | |
593 | if (!priv->tx_queue[i]) | |
594 | return -ENOMEM; | |
595 | ||
596 | priv->tx_queue[i]->tx_skbuff = NULL; | |
597 | priv->tx_queue[i]->qindex = i; | |
598 | priv->tx_queue[i]->dev = priv->ndev; | |
599 | spin_lock_init(&(priv->tx_queue[i]->txlock)); | |
600 | } | |
601 | return 0; | |
602 | } | |
603 | ||
604 | static int gfar_alloc_rx_queues(struct gfar_private *priv) | |
605 | { | |
606 | int i; | |
607 | ||
608 | for (i = 0; i < priv->num_rx_queues; i++) { | |
609 | priv->rx_queue[i] = kzalloc(sizeof(struct gfar_priv_rx_q), | |
610 | GFP_KERNEL); | |
611 | if (!priv->rx_queue[i]) | |
612 | return -ENOMEM; | |
613 | ||
614 | priv->rx_queue[i]->rx_skbuff = NULL; | |
615 | priv->rx_queue[i]->qindex = i; | |
616 | priv->rx_queue[i]->dev = priv->ndev; | |
20862788 CM |
617 | } |
618 | return 0; | |
619 | } | |
620 | ||
621 | static void gfar_free_tx_queues(struct gfar_private *priv) | |
fba4ed03 | 622 | { |
3a2e16c8 | 623 | int i; |
fba4ed03 SG |
624 | |
625 | for (i = 0; i < priv->num_tx_queues; i++) | |
626 | kfree(priv->tx_queue[i]); | |
627 | } | |
628 | ||
20862788 | 629 | static void gfar_free_rx_queues(struct gfar_private *priv) |
fba4ed03 | 630 | { |
3a2e16c8 | 631 | int i; |
fba4ed03 SG |
632 | |
633 | for (i = 0; i < priv->num_rx_queues; i++) | |
634 | kfree(priv->rx_queue[i]); | |
635 | } | |
636 | ||
46ceb60c SG |
637 | static void unmap_group_regs(struct gfar_private *priv) |
638 | { | |
3a2e16c8 | 639 | int i; |
46ceb60c SG |
640 | |
641 | for (i = 0; i < MAXGROUPS; i++) | |
642 | if (priv->gfargrp[i].regs) | |
643 | iounmap(priv->gfargrp[i].regs); | |
644 | } | |
645 | ||
ee873fda CM |
646 | static void free_gfar_dev(struct gfar_private *priv) |
647 | { | |
648 | int i, j; | |
649 | ||
650 | for (i = 0; i < priv->num_grps; i++) | |
651 | for (j = 0; j < GFAR_NUM_IRQS; j++) { | |
652 | kfree(priv->gfargrp[i].irqinfo[j]); | |
653 | priv->gfargrp[i].irqinfo[j] = NULL; | |
654 | } | |
655 | ||
656 | free_netdev(priv->ndev); | |
657 | } | |
658 | ||
46ceb60c SG |
659 | static void disable_napi(struct gfar_private *priv) |
660 | { | |
3a2e16c8 | 661 | int i; |
46ceb60c | 662 | |
aeb12c5e CM |
663 | for (i = 0; i < priv->num_grps; i++) { |
664 | napi_disable(&priv->gfargrp[i].napi_rx); | |
665 | napi_disable(&priv->gfargrp[i].napi_tx); | |
666 | } | |
46ceb60c SG |
667 | } |
668 | ||
669 | static void enable_napi(struct gfar_private *priv) | |
670 | { | |
3a2e16c8 | 671 | int i; |
46ceb60c | 672 | |
aeb12c5e CM |
673 | for (i = 0; i < priv->num_grps; i++) { |
674 | napi_enable(&priv->gfargrp[i].napi_rx); | |
675 | napi_enable(&priv->gfargrp[i].napi_tx); | |
676 | } | |
46ceb60c SG |
677 | } |
678 | ||
679 | static int gfar_parse_group(struct device_node *np, | |
bc4598bc | 680 | struct gfar_private *priv, const char *model) |
46ceb60c | 681 | { |
5fedcc14 | 682 | struct gfar_priv_grp *grp = &priv->gfargrp[priv->num_grps]; |
ee873fda CM |
683 | int i; |
684 | ||
7c1e7e99 PG |
685 | for (i = 0; i < GFAR_NUM_IRQS; i++) { |
686 | grp->irqinfo[i] = kzalloc(sizeof(struct gfar_irqinfo), | |
687 | GFP_KERNEL); | |
688 | if (!grp->irqinfo[i]) | |
ee873fda | 689 | return -ENOMEM; |
ee873fda | 690 | } |
46ceb60c | 691 | |
5fedcc14 CM |
692 | grp->regs = of_iomap(np, 0); |
693 | if (!grp->regs) | |
46ceb60c SG |
694 | return -ENOMEM; |
695 | ||
ee873fda | 696 | gfar_irq(grp, TX)->irq = irq_of_parse_and_map(np, 0); |
46ceb60c SG |
697 | |
698 | /* If we aren't the FEC we have multiple interrupts */ | |
699 | if (model && strcasecmp(model, "FEC")) { | |
ee873fda CM |
700 | gfar_irq(grp, RX)->irq = irq_of_parse_and_map(np, 1); |
701 | gfar_irq(grp, ER)->irq = irq_of_parse_and_map(np, 2); | |
702 | if (gfar_irq(grp, TX)->irq == NO_IRQ || | |
703 | gfar_irq(grp, RX)->irq == NO_IRQ || | |
704 | gfar_irq(grp, ER)->irq == NO_IRQ) | |
46ceb60c | 705 | return -EINVAL; |
46ceb60c SG |
706 | } |
707 | ||
5fedcc14 CM |
708 | grp->priv = priv; |
709 | spin_lock_init(&grp->grplock); | |
bc4598bc | 710 | if (priv->mode == MQ_MG_MODE) { |
55917641 JL |
711 | u32 rxq_mask, txq_mask; |
712 | int ret; | |
713 | ||
714 | grp->rx_bit_map = (DEFAULT_MAPPING >> priv->num_grps); | |
715 | grp->tx_bit_map = (DEFAULT_MAPPING >> priv->num_grps); | |
716 | ||
717 | ret = of_property_read_u32(np, "fsl,rx-bit-map", &rxq_mask); | |
718 | if (!ret) { | |
719 | grp->rx_bit_map = rxq_mask ? | |
720 | rxq_mask : (DEFAULT_MAPPING >> priv->num_grps); | |
721 | } | |
722 | ||
723 | ret = of_property_read_u32(np, "fsl,tx-bit-map", &txq_mask); | |
724 | if (!ret) { | |
725 | grp->tx_bit_map = txq_mask ? | |
726 | txq_mask : (DEFAULT_MAPPING >> priv->num_grps); | |
727 | } | |
71ff9e3d CM |
728 | |
729 | if (priv->poll_mode == GFAR_SQ_POLLING) { | |
730 | /* One Q per interrupt group: Q0 to G0, Q1 to G1 */ | |
731 | grp->rx_bit_map = (DEFAULT_MAPPING >> priv->num_grps); | |
732 | grp->tx_bit_map = (DEFAULT_MAPPING >> priv->num_grps); | |
71ff9e3d | 733 | } |
46ceb60c | 734 | } else { |
5fedcc14 CM |
735 | grp->rx_bit_map = 0xFF; |
736 | grp->tx_bit_map = 0xFF; | |
46ceb60c | 737 | } |
20862788 CM |
738 | |
739 | /* bit_map's MSB is q0 (from q0 to q7) but, for_each_set_bit parses | |
740 | * right to left, so we need to revert the 8 bits to get the q index | |
741 | */ | |
742 | grp->rx_bit_map = bitrev8(grp->rx_bit_map); | |
743 | grp->tx_bit_map = bitrev8(grp->tx_bit_map); | |
744 | ||
745 | /* Calculate RSTAT, TSTAT, RQUEUE and TQUEUE values, | |
746 | * also assign queues to groups | |
747 | */ | |
748 | for_each_set_bit(i, &grp->rx_bit_map, priv->num_rx_queues) { | |
71ff9e3d CM |
749 | if (!grp->rx_queue) |
750 | grp->rx_queue = priv->rx_queue[i]; | |
20862788 CM |
751 | grp->num_rx_queues++; |
752 | grp->rstat |= (RSTAT_CLEAR_RHALT >> i); | |
753 | priv->rqueue |= ((RQUEUE_EN0 | RQUEUE_EX0) >> i); | |
754 | priv->rx_queue[i]->grp = grp; | |
755 | } | |
756 | ||
757 | for_each_set_bit(i, &grp->tx_bit_map, priv->num_tx_queues) { | |
71ff9e3d CM |
758 | if (!grp->tx_queue) |
759 | grp->tx_queue = priv->tx_queue[i]; | |
20862788 CM |
760 | grp->num_tx_queues++; |
761 | grp->tstat |= (TSTAT_CLEAR_THALT >> i); | |
762 | priv->tqueue |= (TQUEUE_EN0 >> i); | |
763 | priv->tx_queue[i]->grp = grp; | |
764 | } | |
765 | ||
46ceb60c SG |
766 | priv->num_grps++; |
767 | ||
768 | return 0; | |
769 | } | |
770 | ||
f50724cd TW |
771 | static int gfar_of_group_count(struct device_node *np) |
772 | { | |
773 | struct device_node *child; | |
774 | int num = 0; | |
775 | ||
776 | for_each_available_child_of_node(np, child) | |
777 | if (!of_node_cmp(child->name, "queue-group")) | |
778 | num++; | |
779 | ||
780 | return num; | |
781 | } | |
782 | ||
2dc11581 | 783 | static int gfar_of_init(struct platform_device *ofdev, struct net_device **pdev) |
b31a1d8b | 784 | { |
b31a1d8b AF |
785 | const char *model; |
786 | const char *ctype; | |
787 | const void *mac_addr; | |
fba4ed03 SG |
788 | int err = 0, i; |
789 | struct net_device *dev = NULL; | |
790 | struct gfar_private *priv = NULL; | |
61c7a080 | 791 | struct device_node *np = ofdev->dev.of_node; |
46ceb60c | 792 | struct device_node *child = NULL; |
55917641 JL |
793 | struct property *stash; |
794 | u32 stash_len = 0; | |
795 | u32 stash_idx = 0; | |
fba4ed03 | 796 | unsigned int num_tx_qs, num_rx_qs; |
b338ce27 | 797 | unsigned short mode, poll_mode; |
b31a1d8b | 798 | |
4b222ca6 | 799 | if (!np) |
b31a1d8b AF |
800 | return -ENODEV; |
801 | ||
b338ce27 CM |
802 | if (of_device_is_compatible(np, "fsl,etsec2")) { |
803 | mode = MQ_MG_MODE; | |
804 | poll_mode = GFAR_SQ_POLLING; | |
805 | } else { | |
806 | mode = SQ_SG_MODE; | |
807 | poll_mode = GFAR_SQ_POLLING; | |
808 | } | |
809 | ||
b338ce27 | 810 | if (mode == SQ_SG_MODE) { |
71ff9e3d CM |
811 | num_tx_qs = 1; |
812 | num_rx_qs = 1; | |
813 | } else { /* MQ_MG_MODE */ | |
c65d7533 | 814 | /* get the actual number of supported groups */ |
f50724cd | 815 | unsigned int num_grps = gfar_of_group_count(np); |
c65d7533 CM |
816 | |
817 | if (num_grps == 0 || num_grps > MAXGROUPS) { | |
818 | dev_err(&ofdev->dev, "Invalid # of int groups(%d)\n", | |
819 | num_grps); | |
820 | pr_err("Cannot do alloc_etherdev, aborting\n"); | |
821 | return -EINVAL; | |
822 | } | |
823 | ||
b338ce27 | 824 | if (poll_mode == GFAR_SQ_POLLING) { |
c65d7533 CM |
825 | num_tx_qs = num_grps; /* one txq per int group */ |
826 | num_rx_qs = num_grps; /* one rxq per int group */ | |
71ff9e3d | 827 | } else { /* GFAR_MQ_POLLING */ |
55917641 JL |
828 | u32 tx_queues, rx_queues; |
829 | int ret; | |
830 | ||
831 | /* parse the num of HW tx and rx queues */ | |
832 | ret = of_property_read_u32(np, "fsl,num_tx_queues", | |
833 | &tx_queues); | |
834 | num_tx_qs = ret ? 1 : tx_queues; | |
835 | ||
836 | ret = of_property_read_u32(np, "fsl,num_rx_queues", | |
837 | &rx_queues); | |
838 | num_rx_qs = ret ? 1 : rx_queues; | |
71ff9e3d CM |
839 | } |
840 | } | |
fba4ed03 SG |
841 | |
842 | if (num_tx_qs > MAX_TX_QS) { | |
59deab26 JP |
843 | pr_err("num_tx_qs(=%d) greater than MAX_TX_QS(=%d)\n", |
844 | num_tx_qs, MAX_TX_QS); | |
845 | pr_err("Cannot do alloc_etherdev, aborting\n"); | |
fba4ed03 SG |
846 | return -EINVAL; |
847 | } | |
848 | ||
fba4ed03 | 849 | if (num_rx_qs > MAX_RX_QS) { |
59deab26 JP |
850 | pr_err("num_rx_qs(=%d) greater than MAX_RX_QS(=%d)\n", |
851 | num_rx_qs, MAX_RX_QS); | |
852 | pr_err("Cannot do alloc_etherdev, aborting\n"); | |
fba4ed03 SG |
853 | return -EINVAL; |
854 | } | |
855 | ||
856 | *pdev = alloc_etherdev_mq(sizeof(*priv), num_tx_qs); | |
857 | dev = *pdev; | |
858 | if (NULL == dev) | |
859 | return -ENOMEM; | |
860 | ||
861 | priv = netdev_priv(dev); | |
fba4ed03 SG |
862 | priv->ndev = dev; |
863 | ||
b338ce27 CM |
864 | priv->mode = mode; |
865 | priv->poll_mode = poll_mode; | |
866 | ||
fba4ed03 | 867 | priv->num_tx_queues = num_tx_qs; |
fe069123 | 868 | netif_set_real_num_rx_queues(dev, num_rx_qs); |
fba4ed03 | 869 | priv->num_rx_queues = num_rx_qs; |
20862788 CM |
870 | |
871 | err = gfar_alloc_tx_queues(priv); | |
872 | if (err) | |
873 | goto tx_alloc_failed; | |
874 | ||
875 | err = gfar_alloc_rx_queues(priv); | |
876 | if (err) | |
877 | goto rx_alloc_failed; | |
b31a1d8b | 878 | |
55917641 JL |
879 | err = of_property_read_string(np, "model", &model); |
880 | if (err) { | |
881 | pr_err("Device model property missing, aborting\n"); | |
882 | goto rx_alloc_failed; | |
883 | } | |
884 | ||
0977f817 | 885 | /* Init Rx queue filer rule set linked list */ |
4aa3a715 SP |
886 | INIT_LIST_HEAD(&priv->rx_list.list); |
887 | priv->rx_list.count = 0; | |
888 | mutex_init(&priv->rx_queue_access); | |
889 | ||
46ceb60c SG |
890 | for (i = 0; i < MAXGROUPS; i++) |
891 | priv->gfargrp[i].regs = NULL; | |
b31a1d8b | 892 | |
46ceb60c | 893 | /* Parse and initialize group specific information */ |
b338ce27 | 894 | if (priv->mode == MQ_MG_MODE) { |
f50724cd TW |
895 | for_each_available_child_of_node(np, child) { |
896 | if (of_node_cmp(child->name, "queue-group")) | |
897 | continue; | |
898 | ||
46ceb60c SG |
899 | err = gfar_parse_group(child, priv, model); |
900 | if (err) | |
901 | goto err_grp_init; | |
b31a1d8b | 902 | } |
b338ce27 | 903 | } else { /* SQ_SG_MODE */ |
46ceb60c | 904 | err = gfar_parse_group(np, priv, model); |
bc4598bc | 905 | if (err) |
46ceb60c | 906 | goto err_grp_init; |
b31a1d8b AF |
907 | } |
908 | ||
55917641 | 909 | stash = of_find_property(np, "bd-stash", NULL); |
4d7902f2 | 910 | |
a12f801d | 911 | if (stash) { |
4d7902f2 AF |
912 | priv->device_flags |= FSL_GIANFAR_DEV_HAS_BD_STASHING; |
913 | priv->bd_stash_en = 1; | |
914 | } | |
915 | ||
55917641 | 916 | err = of_property_read_u32(np, "rx-stash-len", &stash_len); |
4d7902f2 | 917 | |
55917641 JL |
918 | if (err == 0) |
919 | priv->rx_stash_size = stash_len; | |
4d7902f2 | 920 | |
55917641 | 921 | err = of_property_read_u32(np, "rx-stash-idx", &stash_idx); |
4d7902f2 | 922 | |
55917641 JL |
923 | if (err == 0) |
924 | priv->rx_stash_index = stash_idx; | |
4d7902f2 AF |
925 | |
926 | if (stash_len || stash_idx) | |
927 | priv->device_flags |= FSL_GIANFAR_DEV_HAS_BUF_STASHING; | |
928 | ||
b31a1d8b | 929 | mac_addr = of_get_mac_address(np); |
bc4598bc | 930 | |
b31a1d8b | 931 | if (mac_addr) |
6a3c910c | 932 | memcpy(dev->dev_addr, mac_addr, ETH_ALEN); |
b31a1d8b AF |
933 | |
934 | if (model && !strcasecmp(model, "TSEC")) | |
34018fd4 | 935 | priv->device_flags |= FSL_GIANFAR_DEV_HAS_GIGABIT | |
bc4598bc JC |
936 | FSL_GIANFAR_DEV_HAS_COALESCE | |
937 | FSL_GIANFAR_DEV_HAS_RMON | | |
938 | FSL_GIANFAR_DEV_HAS_MULTI_INTR; | |
939 | ||
b31a1d8b | 940 | if (model && !strcasecmp(model, "eTSEC")) |
34018fd4 | 941 | priv->device_flags |= FSL_GIANFAR_DEV_HAS_GIGABIT | |
bc4598bc JC |
942 | FSL_GIANFAR_DEV_HAS_COALESCE | |
943 | FSL_GIANFAR_DEV_HAS_RMON | | |
944 | FSL_GIANFAR_DEV_HAS_MULTI_INTR | | |
bc4598bc JC |
945 | FSL_GIANFAR_DEV_HAS_CSUM | |
946 | FSL_GIANFAR_DEV_HAS_VLAN | | |
947 | FSL_GIANFAR_DEV_HAS_MAGIC_PACKET | | |
948 | FSL_GIANFAR_DEV_HAS_EXTENDED_HASH | | |
949 | FSL_GIANFAR_DEV_HAS_TIMER; | |
b31a1d8b | 950 | |
55917641 | 951 | err = of_property_read_string(np, "phy-connection-type", &ctype); |
b31a1d8b AF |
952 | |
953 | /* We only care about rgmii-id. The rest are autodetected */ | |
55917641 | 954 | if (err == 0 && !strcmp(ctype, "rgmii-id")) |
b31a1d8b AF |
955 | priv->interface = PHY_INTERFACE_MODE_RGMII_ID; |
956 | else | |
957 | priv->interface = PHY_INTERFACE_MODE_MII; | |
958 | ||
55917641 | 959 | if (of_find_property(np, "fsl,magic-packet", NULL)) |
b31a1d8b AF |
960 | priv->device_flags |= FSL_GIANFAR_DEV_HAS_MAGIC_PACKET; |
961 | ||
fe192a49 | 962 | priv->phy_node = of_parse_phandle(np, "phy-handle", 0); |
b31a1d8b | 963 | |
be403645 FF |
964 | /* In the case of a fixed PHY, the DT node associated |
965 | * to the PHY is the Ethernet MAC DT node. | |
966 | */ | |
6f2c9bd8 | 967 | if (!priv->phy_node && of_phy_is_fixed_link(np)) { |
be403645 FF |
968 | err = of_phy_register_fixed_link(np); |
969 | if (err) | |
970 | goto err_grp_init; | |
971 | ||
6f2c9bd8 | 972 | priv->phy_node = of_node_get(np); |
be403645 FF |
973 | } |
974 | ||
b31a1d8b | 975 | /* Find the TBI PHY. If it's not there, we don't support SGMII */ |
fe192a49 | 976 | priv->tbi_node = of_parse_phandle(np, "tbi-handle", 0); |
b31a1d8b AF |
977 | |
978 | return 0; | |
979 | ||
46ceb60c SG |
980 | err_grp_init: |
981 | unmap_group_regs(priv); | |
20862788 CM |
982 | rx_alloc_failed: |
983 | gfar_free_rx_queues(priv); | |
984 | tx_alloc_failed: | |
985 | gfar_free_tx_queues(priv); | |
ee873fda | 986 | free_gfar_dev(priv); |
b31a1d8b AF |
987 | return err; |
988 | } | |
989 | ||
ca0c88c2 | 990 | static int gfar_hwtstamp_set(struct net_device *netdev, struct ifreq *ifr) |
cc772ab7 MR |
991 | { |
992 | struct hwtstamp_config config; | |
993 | struct gfar_private *priv = netdev_priv(netdev); | |
994 | ||
995 | if (copy_from_user(&config, ifr->ifr_data, sizeof(config))) | |
996 | return -EFAULT; | |
997 | ||
998 | /* reserved for future extensions */ | |
999 | if (config.flags) | |
1000 | return -EINVAL; | |
1001 | ||
f0ee7acf MR |
1002 | switch (config.tx_type) { |
1003 | case HWTSTAMP_TX_OFF: | |
1004 | priv->hwts_tx_en = 0; | |
1005 | break; | |
1006 | case HWTSTAMP_TX_ON: | |
1007 | if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_TIMER)) | |
1008 | return -ERANGE; | |
1009 | priv->hwts_tx_en = 1; | |
1010 | break; | |
1011 | default: | |
cc772ab7 | 1012 | return -ERANGE; |
f0ee7acf | 1013 | } |
cc772ab7 MR |
1014 | |
1015 | switch (config.rx_filter) { | |
1016 | case HWTSTAMP_FILTER_NONE: | |
97553f7f | 1017 | if (priv->hwts_rx_en) { |
97553f7f | 1018 | priv->hwts_rx_en = 0; |
0851133b | 1019 | reset_gfar(netdev); |
97553f7f | 1020 | } |
cc772ab7 MR |
1021 | break; |
1022 | default: | |
1023 | if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_TIMER)) | |
1024 | return -ERANGE; | |
97553f7f | 1025 | if (!priv->hwts_rx_en) { |
97553f7f | 1026 | priv->hwts_rx_en = 1; |
0851133b | 1027 | reset_gfar(netdev); |
97553f7f | 1028 | } |
cc772ab7 MR |
1029 | config.rx_filter = HWTSTAMP_FILTER_ALL; |
1030 | break; | |
1031 | } | |
1032 | ||
1033 | return copy_to_user(ifr->ifr_data, &config, sizeof(config)) ? | |
1034 | -EFAULT : 0; | |
1035 | } | |
1036 | ||
ca0c88c2 BH |
1037 | static int gfar_hwtstamp_get(struct net_device *netdev, struct ifreq *ifr) |
1038 | { | |
1039 | struct hwtstamp_config config; | |
1040 | struct gfar_private *priv = netdev_priv(netdev); | |
1041 | ||
1042 | config.flags = 0; | |
1043 | config.tx_type = priv->hwts_tx_en ? HWTSTAMP_TX_ON : HWTSTAMP_TX_OFF; | |
1044 | config.rx_filter = (priv->hwts_rx_en ? | |
1045 | HWTSTAMP_FILTER_ALL : HWTSTAMP_FILTER_NONE); | |
1046 | ||
1047 | return copy_to_user(ifr->ifr_data, &config, sizeof(config)) ? | |
1048 | -EFAULT : 0; | |
1049 | } | |
1050 | ||
0faac9f7 CW |
1051 | static int gfar_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) |
1052 | { | |
1053 | struct gfar_private *priv = netdev_priv(dev); | |
1054 | ||
1055 | if (!netif_running(dev)) | |
1056 | return -EINVAL; | |
1057 | ||
cc772ab7 | 1058 | if (cmd == SIOCSHWTSTAMP) |
ca0c88c2 BH |
1059 | return gfar_hwtstamp_set(dev, rq); |
1060 | if (cmd == SIOCGHWTSTAMP) | |
1061 | return gfar_hwtstamp_get(dev, rq); | |
cc772ab7 | 1062 | |
0faac9f7 CW |
1063 | if (!priv->phydev) |
1064 | return -ENODEV; | |
1065 | ||
28b04113 | 1066 | return phy_mii_ioctl(priv->phydev, rq, cmd); |
0faac9f7 CW |
1067 | } |
1068 | ||
18294ad1 AV |
1069 | static u32 cluster_entry_per_class(struct gfar_private *priv, u32 rqfar, |
1070 | u32 class) | |
7a8b3372 SG |
1071 | { |
1072 | u32 rqfpr = FPR_FILER_MASK; | |
1073 | u32 rqfcr = 0x0; | |
1074 | ||
1075 | rqfar--; | |
1076 | rqfcr = RQFCR_CLE | RQFCR_PID_MASK | RQFCR_CMP_EXACT; | |
6c43e046 WJB |
1077 | priv->ftp_rqfpr[rqfar] = rqfpr; |
1078 | priv->ftp_rqfcr[rqfar] = rqfcr; | |
7a8b3372 SG |
1079 | gfar_write_filer(priv, rqfar, rqfcr, rqfpr); |
1080 | ||
1081 | rqfar--; | |
1082 | rqfcr = RQFCR_CMP_NOMATCH; | |
6c43e046 WJB |
1083 | priv->ftp_rqfpr[rqfar] = rqfpr; |
1084 | priv->ftp_rqfcr[rqfar] = rqfcr; | |
7a8b3372 SG |
1085 | gfar_write_filer(priv, rqfar, rqfcr, rqfpr); |
1086 | ||
1087 | rqfar--; | |
1088 | rqfcr = RQFCR_CMP_EXACT | RQFCR_PID_PARSE | RQFCR_CLE | RQFCR_AND; | |
1089 | rqfpr = class; | |
6c43e046 WJB |
1090 | priv->ftp_rqfcr[rqfar] = rqfcr; |
1091 | priv->ftp_rqfpr[rqfar] = rqfpr; | |
7a8b3372 SG |
1092 | gfar_write_filer(priv, rqfar, rqfcr, rqfpr); |
1093 | ||
1094 | rqfar--; | |
1095 | rqfcr = RQFCR_CMP_EXACT | RQFCR_PID_MASK | RQFCR_AND; | |
1096 | rqfpr = class; | |
6c43e046 WJB |
1097 | priv->ftp_rqfcr[rqfar] = rqfcr; |
1098 | priv->ftp_rqfpr[rqfar] = rqfpr; | |
7a8b3372 SG |
1099 | gfar_write_filer(priv, rqfar, rqfcr, rqfpr); |
1100 | ||
1101 | return rqfar; | |
1102 | } | |
1103 | ||
1104 | static void gfar_init_filer_table(struct gfar_private *priv) | |
1105 | { | |
1106 | int i = 0x0; | |
1107 | u32 rqfar = MAX_FILER_IDX; | |
1108 | u32 rqfcr = 0x0; | |
1109 | u32 rqfpr = FPR_FILER_MASK; | |
1110 | ||
1111 | /* Default rule */ | |
1112 | rqfcr = RQFCR_CMP_MATCH; | |
6c43e046 WJB |
1113 | priv->ftp_rqfcr[rqfar] = rqfcr; |
1114 | priv->ftp_rqfpr[rqfar] = rqfpr; | |
7a8b3372 SG |
1115 | gfar_write_filer(priv, rqfar, rqfcr, rqfpr); |
1116 | ||
1117 | rqfar = cluster_entry_per_class(priv, rqfar, RQFPR_IPV6); | |
1118 | rqfar = cluster_entry_per_class(priv, rqfar, RQFPR_IPV6 | RQFPR_UDP); | |
1119 | rqfar = cluster_entry_per_class(priv, rqfar, RQFPR_IPV6 | RQFPR_TCP); | |
1120 | rqfar = cluster_entry_per_class(priv, rqfar, RQFPR_IPV4); | |
1121 | rqfar = cluster_entry_per_class(priv, rqfar, RQFPR_IPV4 | RQFPR_UDP); | |
1122 | rqfar = cluster_entry_per_class(priv, rqfar, RQFPR_IPV4 | RQFPR_TCP); | |
1123 | ||
85dd08eb | 1124 | /* cur_filer_idx indicated the first non-masked rule */ |
7a8b3372 SG |
1125 | priv->cur_filer_idx = rqfar; |
1126 | ||
1127 | /* Rest are masked rules */ | |
1128 | rqfcr = RQFCR_CMP_NOMATCH; | |
1129 | for (i = 0; i < rqfar; i++) { | |
6c43e046 WJB |
1130 | priv->ftp_rqfcr[i] = rqfcr; |
1131 | priv->ftp_rqfpr[i] = rqfpr; | |
7a8b3372 SG |
1132 | gfar_write_filer(priv, i, rqfcr, rqfpr); |
1133 | } | |
1134 | } | |
1135 | ||
d6ef0bcc | 1136 | #ifdef CONFIG_PPC |
2969b1f7 | 1137 | static void __gfar_detect_errata_83xx(struct gfar_private *priv) |
7d350977 | 1138 | { |
7d350977 AV |
1139 | unsigned int pvr = mfspr(SPRN_PVR); |
1140 | unsigned int svr = mfspr(SPRN_SVR); | |
1141 | unsigned int mod = (svr >> 16) & 0xfff6; /* w/o E suffix */ | |
1142 | unsigned int rev = svr & 0xffff; | |
1143 | ||
1144 | /* MPC8313 Rev 2.0 and higher; All MPC837x */ | |
1145 | if ((pvr == 0x80850010 && mod == 0x80b0 && rev >= 0x0020) || | |
bc4598bc | 1146 | (pvr == 0x80861010 && (mod & 0xfff9) == 0x80c0)) |
7d350977 AV |
1147 | priv->errata |= GFAR_ERRATA_74; |
1148 | ||
deb90eac AV |
1149 | /* MPC8313 and MPC837x all rev */ |
1150 | if ((pvr == 0x80850010 && mod == 0x80b0) || | |
bc4598bc | 1151 | (pvr == 0x80861010 && (mod & 0xfff9) == 0x80c0)) |
deb90eac AV |
1152 | priv->errata |= GFAR_ERRATA_76; |
1153 | ||
2969b1f7 CM |
1154 | /* MPC8313 Rev < 2.0 */ |
1155 | if (pvr == 0x80850010 && mod == 0x80b0 && rev < 0x0020) | |
1156 | priv->errata |= GFAR_ERRATA_12; | |
1157 | } | |
1158 | ||
1159 | static void __gfar_detect_errata_85xx(struct gfar_private *priv) | |
1160 | { | |
1161 | unsigned int svr = mfspr(SPRN_SVR); | |
1162 | ||
1163 | if ((SVR_SOC_VER(svr) == SVR_8548) && (SVR_REV(svr) == 0x20)) | |
4363c2fd | 1164 | priv->errata |= GFAR_ERRATA_12; |
53fad773 CM |
1165 | if (((SVR_SOC_VER(svr) == SVR_P2020) && (SVR_REV(svr) < 0x20)) || |
1166 | ((SVR_SOC_VER(svr) == SVR_P2010) && (SVR_REV(svr) < 0x20))) | |
1167 | priv->errata |= GFAR_ERRATA_76; /* aka eTSEC 20 */ | |
2969b1f7 | 1168 | } |
d6ef0bcc | 1169 | #endif |
2969b1f7 CM |
1170 | |
1171 | static void gfar_detect_errata(struct gfar_private *priv) | |
1172 | { | |
1173 | struct device *dev = &priv->ofdev->dev; | |
1174 | ||
1175 | /* no plans to fix */ | |
1176 | priv->errata |= GFAR_ERRATA_A002; | |
1177 | ||
d6ef0bcc | 1178 | #ifdef CONFIG_PPC |
2969b1f7 CM |
1179 | if (pvr_version_is(PVR_VER_E500V1) || pvr_version_is(PVR_VER_E500V2)) |
1180 | __gfar_detect_errata_85xx(priv); | |
1181 | else /* non-mpc85xx parts, i.e. e300 core based */ | |
1182 | __gfar_detect_errata_83xx(priv); | |
d6ef0bcc | 1183 | #endif |
4363c2fd | 1184 | |
7d350977 AV |
1185 | if (priv->errata) |
1186 | dev_info(dev, "enabled errata workarounds, flags: 0x%x\n", | |
1187 | priv->errata); | |
1188 | } | |
1189 | ||
0851133b | 1190 | void gfar_mac_reset(struct gfar_private *priv) |
20862788 CM |
1191 | { |
1192 | struct gfar __iomem *regs = priv->gfargrp[0].regs; | |
a328ac92 | 1193 | u32 tempval; |
20862788 CM |
1194 | |
1195 | /* Reset MAC layer */ | |
1196 | gfar_write(®s->maccfg1, MACCFG1_SOFT_RESET); | |
1197 | ||
1198 | /* We need to delay at least 3 TX clocks */ | |
a328ac92 | 1199 | udelay(3); |
20862788 CM |
1200 | |
1201 | /* the soft reset bit is not self-resetting, so we need to | |
1202 | * clear it before resuming normal operation | |
1203 | */ | |
1204 | gfar_write(®s->maccfg1, 0); | |
1205 | ||
a328ac92 CM |
1206 | udelay(3); |
1207 | ||
88302648 CM |
1208 | /* Compute rx_buff_size based on config flags */ |
1209 | gfar_rx_buff_size_config(priv); | |
1210 | ||
1211 | /* Initialize the max receive frame/buffer lengths */ | |
1212 | gfar_write(®s->maxfrm, priv->rx_buffer_size); | |
a328ac92 CM |
1213 | gfar_write(®s->mrblr, priv->rx_buffer_size); |
1214 | ||
1215 | /* Initialize the Minimum Frame Length Register */ | |
1216 | gfar_write(®s->minflr, MINFLR_INIT_SETTINGS); | |
1217 | ||
20862788 CM |
1218 | /* Initialize MACCFG2. */ |
1219 | tempval = MACCFG2_INIT_SETTINGS; | |
88302648 CM |
1220 | |
1221 | /* If the mtu is larger than the max size for standard | |
1222 | * ethernet frames (ie, a jumbo frame), then set maccfg2 | |
1223 | * to allow huge frames, and to check the length | |
1224 | */ | |
1225 | if (priv->rx_buffer_size > DEFAULT_RX_BUFFER_SIZE || | |
1226 | gfar_has_errata(priv, GFAR_ERRATA_74)) | |
20862788 | 1227 | tempval |= MACCFG2_HUGEFRAME | MACCFG2_LENGTHCHECK; |
88302648 | 1228 | |
20862788 CM |
1229 | gfar_write(®s->maccfg2, tempval); |
1230 | ||
a328ac92 CM |
1231 | /* Clear mac addr hash registers */ |
1232 | gfar_write(®s->igaddr0, 0); | |
1233 | gfar_write(®s->igaddr1, 0); | |
1234 | gfar_write(®s->igaddr2, 0); | |
1235 | gfar_write(®s->igaddr3, 0); | |
1236 | gfar_write(®s->igaddr4, 0); | |
1237 | gfar_write(®s->igaddr5, 0); | |
1238 | gfar_write(®s->igaddr6, 0); | |
1239 | gfar_write(®s->igaddr7, 0); | |
1240 | ||
1241 | gfar_write(®s->gaddr0, 0); | |
1242 | gfar_write(®s->gaddr1, 0); | |
1243 | gfar_write(®s->gaddr2, 0); | |
1244 | gfar_write(®s->gaddr3, 0); | |
1245 | gfar_write(®s->gaddr4, 0); | |
1246 | gfar_write(®s->gaddr5, 0); | |
1247 | gfar_write(®s->gaddr6, 0); | |
1248 | gfar_write(®s->gaddr7, 0); | |
1249 | ||
1250 | if (priv->extended_hash) | |
1251 | gfar_clear_exact_match(priv->ndev); | |
1252 | ||
1253 | gfar_mac_rx_config(priv); | |
1254 | ||
1255 | gfar_mac_tx_config(priv); | |
1256 | ||
1257 | gfar_set_mac_address(priv->ndev); | |
1258 | ||
1259 | gfar_set_multi(priv->ndev); | |
1260 | ||
1261 | /* clear ievent and imask before configuring coalescing */ | |
1262 | gfar_ints_disable(priv); | |
1263 | ||
1264 | /* Configure the coalescing support */ | |
1265 | gfar_configure_coalescing_all(priv); | |
1266 | } | |
1267 | ||
1268 | static void gfar_hw_init(struct gfar_private *priv) | |
1269 | { | |
1270 | struct gfar __iomem *regs = priv->gfargrp[0].regs; | |
1271 | u32 attrs; | |
1272 | ||
1273 | /* Stop the DMA engine now, in case it was running before | |
1274 | * (The firmware could have used it, and left it running). | |
1275 | */ | |
1276 | gfar_halt(priv); | |
1277 | ||
1278 | gfar_mac_reset(priv); | |
1279 | ||
1280 | /* Zero out the rmon mib registers if it has them */ | |
1281 | if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON) { | |
1282 | memset_io(&(regs->rmon), 0, sizeof(struct rmon_mib)); | |
1283 | ||
1284 | /* Mask off the CAM interrupts */ | |
1285 | gfar_write(®s->rmon.cam1, 0xffffffff); | |
1286 | gfar_write(®s->rmon.cam2, 0xffffffff); | |
1287 | } | |
1288 | ||
20862788 CM |
1289 | /* Initialize ECNTRL */ |
1290 | gfar_write(®s->ecntrl, ECNTRL_INIT_SETTINGS); | |
1291 | ||
34018fd4 CM |
1292 | /* Set the extraction length and index */ |
1293 | attrs = ATTRELI_EL(priv->rx_stash_size) | | |
1294 | ATTRELI_EI(priv->rx_stash_index); | |
1295 | ||
1296 | gfar_write(®s->attreli, attrs); | |
1297 | ||
1298 | /* Start with defaults, and add stashing | |
1299 | * depending on driver parameters | |
1300 | */ | |
1301 | attrs = ATTR_INIT_SETTINGS; | |
1302 | ||
1303 | if (priv->bd_stash_en) | |
1304 | attrs |= ATTR_BDSTASH; | |
1305 | ||
1306 | if (priv->rx_stash_size != 0) | |
1307 | attrs |= ATTR_BUFSTASH; | |
1308 | ||
1309 | gfar_write(®s->attr, attrs); | |
1310 | ||
1311 | /* FIFO configs */ | |
1312 | gfar_write(®s->fifo_tx_thr, DEFAULT_FIFO_TX_THR); | |
1313 | gfar_write(®s->fifo_tx_starve, DEFAULT_FIFO_TX_STARVE); | |
1314 | gfar_write(®s->fifo_tx_starve_shutoff, DEFAULT_FIFO_TX_STARVE_OFF); | |
1315 | ||
20862788 CM |
1316 | /* Program the interrupt steering regs, only for MG devices */ |
1317 | if (priv->num_grps > 1) | |
1318 | gfar_write_isrg(priv); | |
20862788 CM |
1319 | } |
1320 | ||
898157ed | 1321 | static void gfar_init_addr_hash_table(struct gfar_private *priv) |
20862788 CM |
1322 | { |
1323 | struct gfar __iomem *regs = priv->gfargrp[0].regs; | |
1324 | ||
1325 | if (priv->device_flags & FSL_GIANFAR_DEV_HAS_EXTENDED_HASH) { | |
1326 | priv->extended_hash = 1; | |
1327 | priv->hash_width = 9; | |
1328 | ||
1329 | priv->hash_regs[0] = ®s->igaddr0; | |
1330 | priv->hash_regs[1] = ®s->igaddr1; | |
1331 | priv->hash_regs[2] = ®s->igaddr2; | |
1332 | priv->hash_regs[3] = ®s->igaddr3; | |
1333 | priv->hash_regs[4] = ®s->igaddr4; | |
1334 | priv->hash_regs[5] = ®s->igaddr5; | |
1335 | priv->hash_regs[6] = ®s->igaddr6; | |
1336 | priv->hash_regs[7] = ®s->igaddr7; | |
1337 | priv->hash_regs[8] = ®s->gaddr0; | |
1338 | priv->hash_regs[9] = ®s->gaddr1; | |
1339 | priv->hash_regs[10] = ®s->gaddr2; | |
1340 | priv->hash_regs[11] = ®s->gaddr3; | |
1341 | priv->hash_regs[12] = ®s->gaddr4; | |
1342 | priv->hash_regs[13] = ®s->gaddr5; | |
1343 | priv->hash_regs[14] = ®s->gaddr6; | |
1344 | priv->hash_regs[15] = ®s->gaddr7; | |
1345 | ||
1346 | } else { | |
1347 | priv->extended_hash = 0; | |
1348 | priv->hash_width = 8; | |
1349 | ||
1350 | priv->hash_regs[0] = ®s->gaddr0; | |
1351 | priv->hash_regs[1] = ®s->gaddr1; | |
1352 | priv->hash_regs[2] = ®s->gaddr2; | |
1353 | priv->hash_regs[3] = ®s->gaddr3; | |
1354 | priv->hash_regs[4] = ®s->gaddr4; | |
1355 | priv->hash_regs[5] = ®s->gaddr5; | |
1356 | priv->hash_regs[6] = ®s->gaddr6; | |
1357 | priv->hash_regs[7] = ®s->gaddr7; | |
1358 | } | |
1359 | } | |
1360 | ||
bb40dcbb | 1361 | /* Set up the ethernet device structure, private data, |
0977f817 JC |
1362 | * and anything else we need before we start |
1363 | */ | |
74888760 | 1364 | static int gfar_probe(struct platform_device *ofdev) |
1da177e4 | 1365 | { |
1da177e4 LT |
1366 | struct net_device *dev = NULL; |
1367 | struct gfar_private *priv = NULL; | |
20862788 | 1368 | int err = 0, i; |
1da177e4 | 1369 | |
fba4ed03 | 1370 | err = gfar_of_init(ofdev, &dev); |
1da177e4 | 1371 | |
fba4ed03 SG |
1372 | if (err) |
1373 | return err; | |
1da177e4 LT |
1374 | |
1375 | priv = netdev_priv(dev); | |
4826857f KG |
1376 | priv->ndev = dev; |
1377 | priv->ofdev = ofdev; | |
369ec162 | 1378 | priv->dev = &ofdev->dev; |
4826857f | 1379 | SET_NETDEV_DEV(dev, &ofdev->dev); |
1da177e4 | 1380 | |
d87eb127 | 1381 | spin_lock_init(&priv->bflock); |
ab939905 | 1382 | INIT_WORK(&priv->reset_task, gfar_reset_task); |
1da177e4 | 1383 | |
8513fbd8 | 1384 | platform_set_drvdata(ofdev, priv); |
1da177e4 | 1385 | |
7d350977 AV |
1386 | gfar_detect_errata(priv); |
1387 | ||
1da177e4 | 1388 | /* Set the dev->base_addr to the gfar reg region */ |
20862788 | 1389 | dev->base_addr = (unsigned long) priv->gfargrp[0].regs; |
1da177e4 | 1390 | |
1da177e4 | 1391 | /* Fill in the dev structure */ |
1da177e4 | 1392 | dev->watchdog_timeo = TX_TIMEOUT; |
1da177e4 | 1393 | dev->mtu = 1500; |
26ccfc37 | 1394 | dev->netdev_ops = &gfar_netdev_ops; |
0bbaf069 KG |
1395 | dev->ethtool_ops = &gfar_ethtool_ops; |
1396 | ||
fba4ed03 | 1397 | /* Register for napi ...We are registering NAPI for each grp */ |
71ff9e3d CM |
1398 | for (i = 0; i < priv->num_grps; i++) { |
1399 | if (priv->poll_mode == GFAR_SQ_POLLING) { | |
1400 | netif_napi_add(dev, &priv->gfargrp[i].napi_rx, | |
1401 | gfar_poll_rx_sq, GFAR_DEV_WEIGHT); | |
1402 | netif_napi_add(dev, &priv->gfargrp[i].napi_tx, | |
1403 | gfar_poll_tx_sq, 2); | |
1404 | } else { | |
aeb12c5e CM |
1405 | netif_napi_add(dev, &priv->gfargrp[i].napi_rx, |
1406 | gfar_poll_rx, GFAR_DEV_WEIGHT); | |
1407 | netif_napi_add(dev, &priv->gfargrp[i].napi_tx, | |
1408 | gfar_poll_tx, 2); | |
1409 | } | |
1410 | } | |
a12f801d | 1411 | |
b31a1d8b | 1412 | if (priv->device_flags & FSL_GIANFAR_DEV_HAS_CSUM) { |
8b3afe95 | 1413 | dev->hw_features = NETIF_F_IP_CSUM | NETIF_F_SG | |
bc4598bc | 1414 | NETIF_F_RXCSUM; |
8b3afe95 | 1415 | dev->features |= NETIF_F_IP_CSUM | NETIF_F_SG | |
bc4598bc | 1416 | NETIF_F_RXCSUM | NETIF_F_HIGHDMA; |
8b3afe95 | 1417 | } |
0bbaf069 | 1418 | |
87c288c6 | 1419 | if (priv->device_flags & FSL_GIANFAR_DEV_HAS_VLAN) { |
f646968f PM |
1420 | dev->hw_features |= NETIF_F_HW_VLAN_CTAG_TX | |
1421 | NETIF_F_HW_VLAN_CTAG_RX; | |
1422 | dev->features |= NETIF_F_HW_VLAN_CTAG_RX; | |
87c288c6 | 1423 | } |
0bbaf069 | 1424 | |
3d23a05c CM |
1425 | dev->priv_flags |= IFF_LIVE_ADDR_CHANGE; |
1426 | ||
20862788 | 1427 | gfar_init_addr_hash_table(priv); |
0bbaf069 | 1428 | |
532c37bc CM |
1429 | /* Insert receive time stamps into padding alignment bytes */ |
1430 | if (priv->device_flags & FSL_GIANFAR_DEV_HAS_TIMER) | |
1431 | priv->padding = 8; | |
0bbaf069 | 1432 | |
cc772ab7 | 1433 | if (dev->features & NETIF_F_IP_CSUM || |
bc4598bc | 1434 | priv->device_flags & FSL_GIANFAR_DEV_HAS_TIMER) |
bee9e58c | 1435 | dev->needed_headroom = GMAC_FCB_LEN; |
1da177e4 LT |
1436 | |
1437 | priv->rx_buffer_size = DEFAULT_RX_BUFFER_SIZE; | |
1da177e4 | 1438 | |
a12f801d | 1439 | /* Initializing some of the rx/tx queue level parameters */ |
fba4ed03 SG |
1440 | for (i = 0; i < priv->num_tx_queues; i++) { |
1441 | priv->tx_queue[i]->tx_ring_size = DEFAULT_TX_RING_SIZE; | |
1442 | priv->tx_queue[i]->num_txbdfree = DEFAULT_TX_RING_SIZE; | |
1443 | priv->tx_queue[i]->txcoalescing = DEFAULT_TX_COALESCE; | |
1444 | priv->tx_queue[i]->txic = DEFAULT_TXIC; | |
1445 | } | |
a12f801d | 1446 | |
fba4ed03 SG |
1447 | for (i = 0; i < priv->num_rx_queues; i++) { |
1448 | priv->rx_queue[i]->rx_ring_size = DEFAULT_RX_RING_SIZE; | |
1449 | priv->rx_queue[i]->rxcoalescing = DEFAULT_RX_COALESCE; | |
1450 | priv->rx_queue[i]->rxic = DEFAULT_RXIC; | |
1451 | } | |
1da177e4 | 1452 | |
0977f817 | 1453 | /* always enable rx filer */ |
4aa3a715 | 1454 | priv->rx_filer_enable = 1; |
0bbaf069 KG |
1455 | /* Enable most messages by default */ |
1456 | priv->msg_enable = (NETIF_MSG_IFUP << 1 ) - 1; | |
b98b8bab CM |
1457 | /* use pritority h/w tx queue scheduling for single queue devices */ |
1458 | if (priv->num_tx_queues == 1) | |
1459 | priv->prio_sched_en = 1; | |
0bbaf069 | 1460 | |
0851133b CM |
1461 | set_bit(GFAR_DOWN, &priv->state); |
1462 | ||
a328ac92 | 1463 | gfar_hw_init(priv); |
d3eab82b | 1464 | |
d4c642ea FE |
1465 | /* Carrier starts down, phylib will bring it up */ |
1466 | netif_carrier_off(dev); | |
1467 | ||
1da177e4 LT |
1468 | err = register_netdev(dev); |
1469 | ||
1470 | if (err) { | |
59deab26 | 1471 | pr_err("%s: Cannot register net device, aborting\n", dev->name); |
1da177e4 LT |
1472 | goto register_fail; |
1473 | } | |
1474 | ||
2884e5cc | 1475 | device_init_wakeup(&dev->dev, |
bc4598bc JC |
1476 | priv->device_flags & |
1477 | FSL_GIANFAR_DEV_HAS_MAGIC_PACKET); | |
2884e5cc | 1478 | |
c50a5d9a | 1479 | /* fill out IRQ number and name fields */ |
46ceb60c | 1480 | for (i = 0; i < priv->num_grps; i++) { |
ee873fda | 1481 | struct gfar_priv_grp *grp = &priv->gfargrp[i]; |
46ceb60c | 1482 | if (priv->device_flags & FSL_GIANFAR_DEV_HAS_MULTI_INTR) { |
ee873fda | 1483 | sprintf(gfar_irq(grp, TX)->name, "%s%s%c%s", |
0015e551 | 1484 | dev->name, "_g", '0' + i, "_tx"); |
ee873fda | 1485 | sprintf(gfar_irq(grp, RX)->name, "%s%s%c%s", |
0015e551 | 1486 | dev->name, "_g", '0' + i, "_rx"); |
ee873fda | 1487 | sprintf(gfar_irq(grp, ER)->name, "%s%s%c%s", |
0015e551 | 1488 | dev->name, "_g", '0' + i, "_er"); |
46ceb60c | 1489 | } else |
ee873fda | 1490 | strcpy(gfar_irq(grp, TX)->name, dev->name); |
46ceb60c | 1491 | } |
c50a5d9a | 1492 | |
7a8b3372 SG |
1493 | /* Initialize the filer table */ |
1494 | gfar_init_filer_table(priv); | |
1495 | ||
1da177e4 | 1496 | /* Print out the device info */ |
59deab26 | 1497 | netdev_info(dev, "mac: %pM\n", dev->dev_addr); |
1da177e4 | 1498 | |
0977f817 JC |
1499 | /* Even more device info helps when determining which kernel |
1500 | * provided which set of benchmarks. | |
1501 | */ | |
59deab26 | 1502 | netdev_info(dev, "Running with NAPI enabled\n"); |
fba4ed03 | 1503 | for (i = 0; i < priv->num_rx_queues; i++) |
59deab26 JP |
1504 | netdev_info(dev, "RX BD ring size for Q[%d]: %d\n", |
1505 | i, priv->rx_queue[i]->rx_ring_size); | |
bc4598bc | 1506 | for (i = 0; i < priv->num_tx_queues; i++) |
59deab26 JP |
1507 | netdev_info(dev, "TX BD ring size for Q[%d]: %d\n", |
1508 | i, priv->tx_queue[i]->tx_ring_size); | |
1da177e4 LT |
1509 | |
1510 | return 0; | |
1511 | ||
1512 | register_fail: | |
46ceb60c | 1513 | unmap_group_regs(priv); |
20862788 CM |
1514 | gfar_free_rx_queues(priv); |
1515 | gfar_free_tx_queues(priv); | |
888c88b8 UKK |
1516 | of_node_put(priv->phy_node); |
1517 | of_node_put(priv->tbi_node); | |
ee873fda | 1518 | free_gfar_dev(priv); |
bb40dcbb | 1519 | return err; |
1da177e4 LT |
1520 | } |
1521 | ||
2dc11581 | 1522 | static int gfar_remove(struct platform_device *ofdev) |
1da177e4 | 1523 | { |
8513fbd8 | 1524 | struct gfar_private *priv = platform_get_drvdata(ofdev); |
1da177e4 | 1525 | |
888c88b8 UKK |
1526 | of_node_put(priv->phy_node); |
1527 | of_node_put(priv->tbi_node); | |
fe192a49 | 1528 | |
d9d8e041 | 1529 | unregister_netdev(priv->ndev); |
46ceb60c | 1530 | unmap_group_regs(priv); |
20862788 CM |
1531 | gfar_free_rx_queues(priv); |
1532 | gfar_free_tx_queues(priv); | |
ee873fda | 1533 | free_gfar_dev(priv); |
1da177e4 LT |
1534 | |
1535 | return 0; | |
1536 | } | |
1537 | ||
d87eb127 | 1538 | #ifdef CONFIG_PM |
be926fc4 AV |
1539 | |
1540 | static int gfar_suspend(struct device *dev) | |
d87eb127 | 1541 | { |
be926fc4 AV |
1542 | struct gfar_private *priv = dev_get_drvdata(dev); |
1543 | struct net_device *ndev = priv->ndev; | |
46ceb60c | 1544 | struct gfar __iomem *regs = priv->gfargrp[0].regs; |
d87eb127 SW |
1545 | unsigned long flags; |
1546 | u32 tempval; | |
1547 | ||
1548 | int magic_packet = priv->wol_en && | |
bc4598bc JC |
1549 | (priv->device_flags & |
1550 | FSL_GIANFAR_DEV_HAS_MAGIC_PACKET); | |
d87eb127 | 1551 | |
be926fc4 | 1552 | netif_device_detach(ndev); |
d87eb127 | 1553 | |
be926fc4 | 1554 | if (netif_running(ndev)) { |
fba4ed03 SG |
1555 | |
1556 | local_irq_save(flags); | |
1557 | lock_tx_qs(priv); | |
d87eb127 | 1558 | |
c10650b6 | 1559 | gfar_halt_nodisable(priv); |
d87eb127 SW |
1560 | |
1561 | /* Disable Tx, and Rx if wake-on-LAN is disabled. */ | |
f4983704 | 1562 | tempval = gfar_read(®s->maccfg1); |
d87eb127 SW |
1563 | |
1564 | tempval &= ~MACCFG1_TX_EN; | |
1565 | ||
1566 | if (!magic_packet) | |
1567 | tempval &= ~MACCFG1_RX_EN; | |
1568 | ||
f4983704 | 1569 | gfar_write(®s->maccfg1, tempval); |
d87eb127 | 1570 | |
fba4ed03 SG |
1571 | unlock_tx_qs(priv); |
1572 | local_irq_restore(flags); | |
d87eb127 | 1573 | |
46ceb60c | 1574 | disable_napi(priv); |
d87eb127 SW |
1575 | |
1576 | if (magic_packet) { | |
1577 | /* Enable interrupt on Magic Packet */ | |
f4983704 | 1578 | gfar_write(®s->imask, IMASK_MAG); |
d87eb127 SW |
1579 | |
1580 | /* Enable Magic Packet mode */ | |
f4983704 | 1581 | tempval = gfar_read(®s->maccfg2); |
d87eb127 | 1582 | tempval |= MACCFG2_MPEN; |
f4983704 | 1583 | gfar_write(®s->maccfg2, tempval); |
d87eb127 SW |
1584 | } else { |
1585 | phy_stop(priv->phydev); | |
1586 | } | |
1587 | } | |
1588 | ||
1589 | return 0; | |
1590 | } | |
1591 | ||
be926fc4 | 1592 | static int gfar_resume(struct device *dev) |
d87eb127 | 1593 | { |
be926fc4 AV |
1594 | struct gfar_private *priv = dev_get_drvdata(dev); |
1595 | struct net_device *ndev = priv->ndev; | |
46ceb60c | 1596 | struct gfar __iomem *regs = priv->gfargrp[0].regs; |
d87eb127 SW |
1597 | unsigned long flags; |
1598 | u32 tempval; | |
1599 | int magic_packet = priv->wol_en && | |
bc4598bc JC |
1600 | (priv->device_flags & |
1601 | FSL_GIANFAR_DEV_HAS_MAGIC_PACKET); | |
d87eb127 | 1602 | |
be926fc4 AV |
1603 | if (!netif_running(ndev)) { |
1604 | netif_device_attach(ndev); | |
d87eb127 SW |
1605 | return 0; |
1606 | } | |
1607 | ||
1608 | if (!magic_packet && priv->phydev) | |
1609 | phy_start(priv->phydev); | |
1610 | ||
1611 | /* Disable Magic Packet mode, in case something | |
1612 | * else woke us up. | |
1613 | */ | |
fba4ed03 SG |
1614 | local_irq_save(flags); |
1615 | lock_tx_qs(priv); | |
d87eb127 | 1616 | |
f4983704 | 1617 | tempval = gfar_read(®s->maccfg2); |
d87eb127 | 1618 | tempval &= ~MACCFG2_MPEN; |
f4983704 | 1619 | gfar_write(®s->maccfg2, tempval); |
d87eb127 | 1620 | |
c10650b6 | 1621 | gfar_start(priv); |
d87eb127 | 1622 | |
fba4ed03 SG |
1623 | unlock_tx_qs(priv); |
1624 | local_irq_restore(flags); | |
d87eb127 | 1625 | |
be926fc4 AV |
1626 | netif_device_attach(ndev); |
1627 | ||
46ceb60c | 1628 | enable_napi(priv); |
be926fc4 AV |
1629 | |
1630 | return 0; | |
1631 | } | |
1632 | ||
1633 | static int gfar_restore(struct device *dev) | |
1634 | { | |
1635 | struct gfar_private *priv = dev_get_drvdata(dev); | |
1636 | struct net_device *ndev = priv->ndev; | |
1637 | ||
103cdd1d WD |
1638 | if (!netif_running(ndev)) { |
1639 | netif_device_attach(ndev); | |
1640 | ||
be926fc4 | 1641 | return 0; |
103cdd1d | 1642 | } |
be926fc4 | 1643 | |
1eb8f7a7 CM |
1644 | if (gfar_init_bds(ndev)) { |
1645 | free_skb_resources(priv); | |
1646 | return -ENOMEM; | |
1647 | } | |
1648 | ||
a328ac92 CM |
1649 | gfar_mac_reset(priv); |
1650 | ||
1651 | gfar_init_tx_rx_base(priv); | |
1652 | ||
c10650b6 | 1653 | gfar_start(priv); |
be926fc4 AV |
1654 | |
1655 | priv->oldlink = 0; | |
1656 | priv->oldspeed = 0; | |
1657 | priv->oldduplex = -1; | |
1658 | ||
1659 | if (priv->phydev) | |
1660 | phy_start(priv->phydev); | |
d87eb127 | 1661 | |
be926fc4 | 1662 | netif_device_attach(ndev); |
5ea681d4 | 1663 | enable_napi(priv); |
d87eb127 SW |
1664 | |
1665 | return 0; | |
1666 | } | |
be926fc4 AV |
1667 | |
1668 | static struct dev_pm_ops gfar_pm_ops = { | |
1669 | .suspend = gfar_suspend, | |
1670 | .resume = gfar_resume, | |
1671 | .freeze = gfar_suspend, | |
1672 | .thaw = gfar_resume, | |
1673 | .restore = gfar_restore, | |
1674 | }; | |
1675 | ||
1676 | #define GFAR_PM_OPS (&gfar_pm_ops) | |
1677 | ||
d87eb127 | 1678 | #else |
be926fc4 AV |
1679 | |
1680 | #define GFAR_PM_OPS NULL | |
be926fc4 | 1681 | |
d87eb127 | 1682 | #endif |
1da177e4 | 1683 | |
e8a2b6a4 AF |
1684 | /* Reads the controller's registers to determine what interface |
1685 | * connects it to the PHY. | |
1686 | */ | |
1687 | static phy_interface_t gfar_get_interface(struct net_device *dev) | |
1688 | { | |
1689 | struct gfar_private *priv = netdev_priv(dev); | |
46ceb60c | 1690 | struct gfar __iomem *regs = priv->gfargrp[0].regs; |
f4983704 SG |
1691 | u32 ecntrl; |
1692 | ||
f4983704 | 1693 | ecntrl = gfar_read(®s->ecntrl); |
e8a2b6a4 AF |
1694 | |
1695 | if (ecntrl & ECNTRL_SGMII_MODE) | |
1696 | return PHY_INTERFACE_MODE_SGMII; | |
1697 | ||
1698 | if (ecntrl & ECNTRL_TBI_MODE) { | |
1699 | if (ecntrl & ECNTRL_REDUCED_MODE) | |
1700 | return PHY_INTERFACE_MODE_RTBI; | |
1701 | else | |
1702 | return PHY_INTERFACE_MODE_TBI; | |
1703 | } | |
1704 | ||
1705 | if (ecntrl & ECNTRL_REDUCED_MODE) { | |
bc4598bc | 1706 | if (ecntrl & ECNTRL_REDUCED_MII_MODE) { |
e8a2b6a4 | 1707 | return PHY_INTERFACE_MODE_RMII; |
bc4598bc | 1708 | } |
7132ab7f | 1709 | else { |
b31a1d8b | 1710 | phy_interface_t interface = priv->interface; |
7132ab7f | 1711 | |
0977f817 | 1712 | /* This isn't autodetected right now, so it must |
7132ab7f AF |
1713 | * be set by the device tree or platform code. |
1714 | */ | |
1715 | if (interface == PHY_INTERFACE_MODE_RGMII_ID) | |
1716 | return PHY_INTERFACE_MODE_RGMII_ID; | |
1717 | ||
e8a2b6a4 | 1718 | return PHY_INTERFACE_MODE_RGMII; |
7132ab7f | 1719 | } |
e8a2b6a4 AF |
1720 | } |
1721 | ||
b31a1d8b | 1722 | if (priv->device_flags & FSL_GIANFAR_DEV_HAS_GIGABIT) |
e8a2b6a4 AF |
1723 | return PHY_INTERFACE_MODE_GMII; |
1724 | ||
1725 | return PHY_INTERFACE_MODE_MII; | |
1726 | } | |
1727 | ||
1728 | ||
bb40dcbb AF |
1729 | /* Initializes driver's PHY state, and attaches to the PHY. |
1730 | * Returns 0 on success. | |
1da177e4 LT |
1731 | */ |
1732 | static int init_phy(struct net_device *dev) | |
1733 | { | |
1734 | struct gfar_private *priv = netdev_priv(dev); | |
bb40dcbb | 1735 | uint gigabit_support = |
b31a1d8b | 1736 | priv->device_flags & FSL_GIANFAR_DEV_HAS_GIGABIT ? |
23402bdd | 1737 | GFAR_SUPPORTED_GBIT : 0; |
e8a2b6a4 | 1738 | phy_interface_t interface; |
1da177e4 LT |
1739 | |
1740 | priv->oldlink = 0; | |
1741 | priv->oldspeed = 0; | |
1742 | priv->oldduplex = -1; | |
1743 | ||
e8a2b6a4 AF |
1744 | interface = gfar_get_interface(dev); |
1745 | ||
1db780f8 AV |
1746 | priv->phydev = of_phy_connect(dev, priv->phy_node, &adjust_link, 0, |
1747 | interface); | |
1db780f8 AV |
1748 | if (!priv->phydev) { |
1749 | dev_err(&dev->dev, "could not attach to PHY\n"); | |
1750 | return -ENODEV; | |
fe192a49 | 1751 | } |
1da177e4 | 1752 | |
d3c12873 KJ |
1753 | if (interface == PHY_INTERFACE_MODE_SGMII) |
1754 | gfar_configure_serdes(dev); | |
1755 | ||
bb40dcbb | 1756 | /* Remove any features not supported by the controller */ |
fe192a49 GL |
1757 | priv->phydev->supported &= (GFAR_SUPPORTED | gigabit_support); |
1758 | priv->phydev->advertising = priv->phydev->supported; | |
1da177e4 | 1759 | |
cf987afc PMB |
1760 | /* Add support for flow control, but don't advertise it by default */ |
1761 | priv->phydev->supported |= (SUPPORTED_Pause | SUPPORTED_Asym_Pause); | |
1762 | ||
1da177e4 | 1763 | return 0; |
1da177e4 LT |
1764 | } |
1765 | ||
0977f817 | 1766 | /* Initialize TBI PHY interface for communicating with the |
d0313587 PG |
1767 | * SERDES lynx PHY on the chip. We communicate with this PHY |
1768 | * through the MDIO bus on each controller, treating it as a | |
1769 | * "normal" PHY at the address found in the TBIPA register. We assume | |
1770 | * that the TBIPA register is valid. Either the MDIO bus code will set | |
1771 | * it to a value that doesn't conflict with other PHYs on the bus, or the | |
1772 | * value doesn't matter, as there are no other PHYs on the bus. | |
1773 | */ | |
d3c12873 KJ |
1774 | static void gfar_configure_serdes(struct net_device *dev) |
1775 | { | |
1776 | struct gfar_private *priv = netdev_priv(dev); | |
fe192a49 GL |
1777 | struct phy_device *tbiphy; |
1778 | ||
1779 | if (!priv->tbi_node) { | |
1780 | dev_warn(&dev->dev, "error: SGMII mode requires that the " | |
1781 | "device tree specify a tbi-handle\n"); | |
1782 | return; | |
1783 | } | |
c132419e | 1784 | |
fe192a49 GL |
1785 | tbiphy = of_phy_find_device(priv->tbi_node); |
1786 | if (!tbiphy) { | |
1787 | dev_err(&dev->dev, "error: Could not get TBI device\n"); | |
b31a1d8b AF |
1788 | return; |
1789 | } | |
d3c12873 | 1790 | |
0977f817 | 1791 | /* If the link is already up, we must already be ok, and don't need to |
bdb59f94 TP |
1792 | * configure and reset the TBI<->SerDes link. Maybe U-Boot configured |
1793 | * everything for us? Resetting it takes the link down and requires | |
1794 | * several seconds for it to come back. | |
1795 | */ | |
fe192a49 | 1796 | if (phy_read(tbiphy, MII_BMSR) & BMSR_LSTATUS) |
b31a1d8b | 1797 | return; |
d3c12873 | 1798 | |
d0313587 | 1799 | /* Single clk mode, mii mode off(for serdes communication) */ |
fe192a49 | 1800 | phy_write(tbiphy, MII_TBICON, TBICON_CLK_SELECT); |
d3c12873 | 1801 | |
fe192a49 | 1802 | phy_write(tbiphy, MII_ADVERTISE, |
bc4598bc JC |
1803 | ADVERTISE_1000XFULL | ADVERTISE_1000XPAUSE | |
1804 | ADVERTISE_1000XPSE_ASYM); | |
d3c12873 | 1805 | |
bc4598bc JC |
1806 | phy_write(tbiphy, MII_BMCR, |
1807 | BMCR_ANENABLE | BMCR_ANRESTART | BMCR_FULLDPLX | | |
1808 | BMCR_SPEED1000); | |
d3c12873 KJ |
1809 | } |
1810 | ||
511d934f AV |
1811 | static int __gfar_is_rx_idle(struct gfar_private *priv) |
1812 | { | |
1813 | u32 res; | |
1814 | ||
0977f817 | 1815 | /* Normaly TSEC should not hang on GRS commands, so we should |
511d934f AV |
1816 | * actually wait for IEVENT_GRSC flag. |
1817 | */ | |
ad3660c2 | 1818 | if (!gfar_has_errata(priv, GFAR_ERRATA_A002)) |
511d934f AV |
1819 | return 0; |
1820 | ||
0977f817 | 1821 | /* Read the eTSEC register at offset 0xD1C. If bits 7-14 are |
511d934f AV |
1822 | * the same as bits 23-30, the eTSEC Rx is assumed to be idle |
1823 | * and the Rx can be safely reset. | |
1824 | */ | |
1825 | res = gfar_read((void __iomem *)priv->gfargrp[0].regs + 0xd1c); | |
1826 | res &= 0x7f807f80; | |
1827 | if ((res & 0xffff) == (res >> 16)) | |
1828 | return 1; | |
1829 | ||
1830 | return 0; | |
1831 | } | |
0bbaf069 KG |
1832 | |
1833 | /* Halt the receive and transmit queues */ | |
c10650b6 | 1834 | static void gfar_halt_nodisable(struct gfar_private *priv) |
1da177e4 | 1835 | { |
efeddce7 | 1836 | struct gfar __iomem *regs = priv->gfargrp[0].regs; |
1da177e4 | 1837 | u32 tempval; |
a4feee89 CM |
1838 | unsigned int timeout; |
1839 | int stopped; | |
1da177e4 | 1840 | |
efeddce7 | 1841 | gfar_ints_disable(priv); |
1da177e4 | 1842 | |
a4feee89 CM |
1843 | if (gfar_is_dma_stopped(priv)) |
1844 | return; | |
1845 | ||
1da177e4 | 1846 | /* Stop the DMA, and wait for it to stop */ |
f4983704 | 1847 | tempval = gfar_read(®s->dmactrl); |
a4feee89 CM |
1848 | tempval |= (DMACTRL_GRS | DMACTRL_GTS); |
1849 | gfar_write(®s->dmactrl, tempval); | |
1850 | ||
1851 | retry: | |
1852 | timeout = 1000; | |
1853 | while (!(stopped = gfar_is_dma_stopped(priv)) && timeout) { | |
1854 | cpu_relax(); | |
1855 | timeout--; | |
1da177e4 | 1856 | } |
a4feee89 CM |
1857 | |
1858 | if (!timeout) | |
1859 | stopped = gfar_is_dma_stopped(priv); | |
1860 | ||
1861 | if (!stopped && !gfar_is_rx_dma_stopped(priv) && | |
1862 | !__gfar_is_rx_idle(priv)) | |
1863 | goto retry; | |
d87eb127 | 1864 | } |
d87eb127 SW |
1865 | |
1866 | /* Halt the receive and transmit queues */ | |
c10650b6 | 1867 | void gfar_halt(struct gfar_private *priv) |
d87eb127 | 1868 | { |
46ceb60c | 1869 | struct gfar __iomem *regs = priv->gfargrp[0].regs; |
d87eb127 | 1870 | u32 tempval; |
1da177e4 | 1871 | |
c10650b6 CM |
1872 | /* Dissable the Rx/Tx hw queues */ |
1873 | gfar_write(®s->rqueue, 0); | |
1874 | gfar_write(®s->tqueue, 0); | |
2a54adc3 | 1875 | |
c10650b6 CM |
1876 | mdelay(10); |
1877 | ||
1878 | gfar_halt_nodisable(priv); | |
1879 | ||
1880 | /* Disable Rx/Tx DMA */ | |
1da177e4 LT |
1881 | tempval = gfar_read(®s->maccfg1); |
1882 | tempval &= ~(MACCFG1_RX_EN | MACCFG1_TX_EN); | |
1883 | gfar_write(®s->maccfg1, tempval); | |
0bbaf069 KG |
1884 | } |
1885 | ||
1886 | void stop_gfar(struct net_device *dev) | |
1887 | { | |
1888 | struct gfar_private *priv = netdev_priv(dev); | |
0bbaf069 | 1889 | |
0851133b | 1890 | netif_tx_stop_all_queues(dev); |
bb40dcbb | 1891 | |
4e857c58 | 1892 | smp_mb__before_atomic(); |
0851133b | 1893 | set_bit(GFAR_DOWN, &priv->state); |
4e857c58 | 1894 | smp_mb__after_atomic(); |
a12f801d | 1895 | |
0851133b | 1896 | disable_napi(priv); |
0bbaf069 | 1897 | |
0851133b | 1898 | /* disable ints and gracefully shut down Rx/Tx DMA */ |
c10650b6 | 1899 | gfar_halt(priv); |
1da177e4 | 1900 | |
0851133b | 1901 | phy_stop(priv->phydev); |
1da177e4 | 1902 | |
1da177e4 | 1903 | free_skb_resources(priv); |
1da177e4 LT |
1904 | } |
1905 | ||
fba4ed03 | 1906 | static void free_skb_tx_queue(struct gfar_priv_tx_q *tx_queue) |
1da177e4 | 1907 | { |
1da177e4 | 1908 | struct txbd8 *txbdp; |
fba4ed03 | 1909 | struct gfar_private *priv = netdev_priv(tx_queue->dev); |
4669bc90 | 1910 | int i, j; |
1da177e4 | 1911 | |
a12f801d | 1912 | txbdp = tx_queue->tx_bd_base; |
1da177e4 | 1913 | |
a12f801d SG |
1914 | for (i = 0; i < tx_queue->tx_ring_size; i++) { |
1915 | if (!tx_queue->tx_skbuff[i]) | |
4669bc90 | 1916 | continue; |
1da177e4 | 1917 | |
a7312d58 CM |
1918 | dma_unmap_single(priv->dev, be32_to_cpu(txbdp->bufPtr), |
1919 | be16_to_cpu(txbdp->length), DMA_TO_DEVICE); | |
4669bc90 | 1920 | txbdp->lstatus = 0; |
fba4ed03 | 1921 | for (j = 0; j < skb_shinfo(tx_queue->tx_skbuff[i])->nr_frags; |
bc4598bc | 1922 | j++) { |
4669bc90 | 1923 | txbdp++; |
a7312d58 CM |
1924 | dma_unmap_page(priv->dev, be32_to_cpu(txbdp->bufPtr), |
1925 | be16_to_cpu(txbdp->length), | |
1926 | DMA_TO_DEVICE); | |
1da177e4 | 1927 | } |
ad5da7ab | 1928 | txbdp++; |
a12f801d SG |
1929 | dev_kfree_skb_any(tx_queue->tx_skbuff[i]); |
1930 | tx_queue->tx_skbuff[i] = NULL; | |
1da177e4 | 1931 | } |
a12f801d | 1932 | kfree(tx_queue->tx_skbuff); |
1eb8f7a7 | 1933 | tx_queue->tx_skbuff = NULL; |
fba4ed03 | 1934 | } |
1da177e4 | 1935 | |
fba4ed03 SG |
1936 | static void free_skb_rx_queue(struct gfar_priv_rx_q *rx_queue) |
1937 | { | |
1938 | struct rxbd8 *rxbdp; | |
1939 | struct gfar_private *priv = netdev_priv(rx_queue->dev); | |
1940 | int i; | |
1da177e4 | 1941 | |
fba4ed03 | 1942 | rxbdp = rx_queue->rx_bd_base; |
1da177e4 | 1943 | |
a12f801d SG |
1944 | for (i = 0; i < rx_queue->rx_ring_size; i++) { |
1945 | if (rx_queue->rx_skbuff[i]) { | |
a7312d58 | 1946 | dma_unmap_single(priv->dev, be32_to_cpu(rxbdp->bufPtr), |
369ec162 | 1947 | priv->rx_buffer_size, |
bc4598bc | 1948 | DMA_FROM_DEVICE); |
a12f801d SG |
1949 | dev_kfree_skb_any(rx_queue->rx_skbuff[i]); |
1950 | rx_queue->rx_skbuff[i] = NULL; | |
1da177e4 | 1951 | } |
e69edd21 AV |
1952 | rxbdp->lstatus = 0; |
1953 | rxbdp->bufPtr = 0; | |
1954 | rxbdp++; | |
1da177e4 | 1955 | } |
a12f801d | 1956 | kfree(rx_queue->rx_skbuff); |
1eb8f7a7 | 1957 | rx_queue->rx_skbuff = NULL; |
fba4ed03 | 1958 | } |
e69edd21 | 1959 | |
fba4ed03 | 1960 | /* If there are any tx skbs or rx skbs still around, free them. |
0977f817 JC |
1961 | * Then free tx_skbuff and rx_skbuff |
1962 | */ | |
fba4ed03 SG |
1963 | static void free_skb_resources(struct gfar_private *priv) |
1964 | { | |
1965 | struct gfar_priv_tx_q *tx_queue = NULL; | |
1966 | struct gfar_priv_rx_q *rx_queue = NULL; | |
1967 | int i; | |
1968 | ||
1969 | /* Go through all the buffer descriptors and free their data buffers */ | |
1970 | for (i = 0; i < priv->num_tx_queues; i++) { | |
d8a0f1b0 | 1971 | struct netdev_queue *txq; |
bc4598bc | 1972 | |
fba4ed03 | 1973 | tx_queue = priv->tx_queue[i]; |
d8a0f1b0 | 1974 | txq = netdev_get_tx_queue(tx_queue->dev, tx_queue->qindex); |
bc4598bc | 1975 | if (tx_queue->tx_skbuff) |
fba4ed03 | 1976 | free_skb_tx_queue(tx_queue); |
d8a0f1b0 | 1977 | netdev_tx_reset_queue(txq); |
fba4ed03 SG |
1978 | } |
1979 | ||
1980 | for (i = 0; i < priv->num_rx_queues; i++) { | |
1981 | rx_queue = priv->rx_queue[i]; | |
bc4598bc | 1982 | if (rx_queue->rx_skbuff) |
fba4ed03 SG |
1983 | free_skb_rx_queue(rx_queue); |
1984 | } | |
1985 | ||
369ec162 | 1986 | dma_free_coherent(priv->dev, |
bc4598bc JC |
1987 | sizeof(struct txbd8) * priv->total_tx_ring_size + |
1988 | sizeof(struct rxbd8) * priv->total_rx_ring_size, | |
1989 | priv->tx_queue[0]->tx_bd_base, | |
1990 | priv->tx_queue[0]->tx_bd_dma_base); | |
1da177e4 LT |
1991 | } |
1992 | ||
c10650b6 | 1993 | void gfar_start(struct gfar_private *priv) |
0bbaf069 | 1994 | { |
46ceb60c | 1995 | struct gfar __iomem *regs = priv->gfargrp[0].regs; |
0bbaf069 | 1996 | u32 tempval; |
46ceb60c | 1997 | int i = 0; |
0bbaf069 | 1998 | |
c10650b6 CM |
1999 | /* Enable Rx/Tx hw queues */ |
2000 | gfar_write(®s->rqueue, priv->rqueue); | |
2001 | gfar_write(®s->tqueue, priv->tqueue); | |
0bbaf069 KG |
2002 | |
2003 | /* Initialize DMACTRL to have WWR and WOP */ | |
f4983704 | 2004 | tempval = gfar_read(®s->dmactrl); |
0bbaf069 | 2005 | tempval |= DMACTRL_INIT_SETTINGS; |
f4983704 | 2006 | gfar_write(®s->dmactrl, tempval); |
0bbaf069 | 2007 | |
0bbaf069 | 2008 | /* Make sure we aren't stopped */ |
f4983704 | 2009 | tempval = gfar_read(®s->dmactrl); |
0bbaf069 | 2010 | tempval &= ~(DMACTRL_GRS | DMACTRL_GTS); |
f4983704 | 2011 | gfar_write(®s->dmactrl, tempval); |
0bbaf069 | 2012 | |
46ceb60c SG |
2013 | for (i = 0; i < priv->num_grps; i++) { |
2014 | regs = priv->gfargrp[i].regs; | |
2015 | /* Clear THLT/RHLT, so that the DMA starts polling now */ | |
2016 | gfar_write(®s->tstat, priv->gfargrp[i].tstat); | |
2017 | gfar_write(®s->rstat, priv->gfargrp[i].rstat); | |
46ceb60c | 2018 | } |
12dea57b | 2019 | |
c10650b6 CM |
2020 | /* Enable Rx/Tx DMA */ |
2021 | tempval = gfar_read(®s->maccfg1); | |
2022 | tempval |= (MACCFG1_RX_EN | MACCFG1_TX_EN); | |
2023 | gfar_write(®s->maccfg1, tempval); | |
2024 | ||
efeddce7 CM |
2025 | gfar_ints_enable(priv); |
2026 | ||
c10650b6 | 2027 | priv->ndev->trans_start = jiffies; /* prevent tx timeout */ |
0bbaf069 KG |
2028 | } |
2029 | ||
80ec396c CM |
2030 | static void free_grp_irqs(struct gfar_priv_grp *grp) |
2031 | { | |
2032 | free_irq(gfar_irq(grp, TX)->irq, grp); | |
2033 | free_irq(gfar_irq(grp, RX)->irq, grp); | |
2034 | free_irq(gfar_irq(grp, ER)->irq, grp); | |
2035 | } | |
2036 | ||
46ceb60c SG |
2037 | static int register_grp_irqs(struct gfar_priv_grp *grp) |
2038 | { | |
2039 | struct gfar_private *priv = grp->priv; | |
2040 | struct net_device *dev = priv->ndev; | |
2041 | int err; | |
1da177e4 | 2042 | |
1da177e4 | 2043 | /* If the device has multiple interrupts, register for |
0977f817 JC |
2044 | * them. Otherwise, only register for the one |
2045 | */ | |
b31a1d8b | 2046 | if (priv->device_flags & FSL_GIANFAR_DEV_HAS_MULTI_INTR) { |
0bbaf069 | 2047 | /* Install our interrupt handlers for Error, |
0977f817 JC |
2048 | * Transmit, and Receive |
2049 | */ | |
ee873fda CM |
2050 | err = request_irq(gfar_irq(grp, ER)->irq, gfar_error, 0, |
2051 | gfar_irq(grp, ER)->name, grp); | |
2052 | if (err < 0) { | |
59deab26 | 2053 | netif_err(priv, intr, dev, "Can't get IRQ %d\n", |
ee873fda | 2054 | gfar_irq(grp, ER)->irq); |
46ceb60c | 2055 | |
2145f1af | 2056 | goto err_irq_fail; |
1da177e4 | 2057 | } |
ee873fda CM |
2058 | err = request_irq(gfar_irq(grp, TX)->irq, gfar_transmit, 0, |
2059 | gfar_irq(grp, TX)->name, grp); | |
2060 | if (err < 0) { | |
59deab26 | 2061 | netif_err(priv, intr, dev, "Can't get IRQ %d\n", |
ee873fda | 2062 | gfar_irq(grp, TX)->irq); |
1da177e4 LT |
2063 | goto tx_irq_fail; |
2064 | } | |
ee873fda CM |
2065 | err = request_irq(gfar_irq(grp, RX)->irq, gfar_receive, 0, |
2066 | gfar_irq(grp, RX)->name, grp); | |
2067 | if (err < 0) { | |
59deab26 | 2068 | netif_err(priv, intr, dev, "Can't get IRQ %d\n", |
ee873fda | 2069 | gfar_irq(grp, RX)->irq); |
1da177e4 LT |
2070 | goto rx_irq_fail; |
2071 | } | |
2072 | } else { | |
ee873fda CM |
2073 | err = request_irq(gfar_irq(grp, TX)->irq, gfar_interrupt, 0, |
2074 | gfar_irq(grp, TX)->name, grp); | |
2075 | if (err < 0) { | |
59deab26 | 2076 | netif_err(priv, intr, dev, "Can't get IRQ %d\n", |
ee873fda | 2077 | gfar_irq(grp, TX)->irq); |
1da177e4 LT |
2078 | goto err_irq_fail; |
2079 | } | |
2080 | } | |
2081 | ||
46ceb60c SG |
2082 | return 0; |
2083 | ||
2084 | rx_irq_fail: | |
ee873fda | 2085 | free_irq(gfar_irq(grp, TX)->irq, grp); |
46ceb60c | 2086 | tx_irq_fail: |
ee873fda | 2087 | free_irq(gfar_irq(grp, ER)->irq, grp); |
46ceb60c SG |
2088 | err_irq_fail: |
2089 | return err; | |
2090 | ||
2091 | } | |
2092 | ||
80ec396c CM |
2093 | static void gfar_free_irq(struct gfar_private *priv) |
2094 | { | |
2095 | int i; | |
2096 | ||
2097 | /* Free the IRQs */ | |
2098 | if (priv->device_flags & FSL_GIANFAR_DEV_HAS_MULTI_INTR) { | |
2099 | for (i = 0; i < priv->num_grps; i++) | |
2100 | free_grp_irqs(&priv->gfargrp[i]); | |
2101 | } else { | |
2102 | for (i = 0; i < priv->num_grps; i++) | |
2103 | free_irq(gfar_irq(&priv->gfargrp[i], TX)->irq, | |
2104 | &priv->gfargrp[i]); | |
2105 | } | |
2106 | } | |
2107 | ||
2108 | static int gfar_request_irq(struct gfar_private *priv) | |
2109 | { | |
2110 | int err, i, j; | |
2111 | ||
2112 | for (i = 0; i < priv->num_grps; i++) { | |
2113 | err = register_grp_irqs(&priv->gfargrp[i]); | |
2114 | if (err) { | |
2115 | for (j = 0; j < i; j++) | |
2116 | free_grp_irqs(&priv->gfargrp[j]); | |
2117 | return err; | |
2118 | } | |
2119 | } | |
2120 | ||
2121 | return 0; | |
2122 | } | |
2123 | ||
46ceb60c SG |
2124 | /* Bring the controller up and running */ |
2125 | int startup_gfar(struct net_device *ndev) | |
2126 | { | |
2127 | struct gfar_private *priv = netdev_priv(ndev); | |
80ec396c | 2128 | int err; |
46ceb60c | 2129 | |
a328ac92 | 2130 | gfar_mac_reset(priv); |
46ceb60c | 2131 | |
46ceb60c SG |
2132 | err = gfar_alloc_skb_resources(ndev); |
2133 | if (err) | |
2134 | return err; | |
2135 | ||
a328ac92 | 2136 | gfar_init_tx_rx_base(priv); |
46ceb60c | 2137 | |
4e857c58 | 2138 | smp_mb__before_atomic(); |
0851133b | 2139 | clear_bit(GFAR_DOWN, &priv->state); |
4e857c58 | 2140 | smp_mb__after_atomic(); |
0851133b CM |
2141 | |
2142 | /* Start Rx/Tx DMA and enable the interrupts */ | |
c10650b6 | 2143 | gfar_start(priv); |
1da177e4 | 2144 | |
826aa4a0 AV |
2145 | phy_start(priv->phydev); |
2146 | ||
0851133b CM |
2147 | enable_napi(priv); |
2148 | ||
2149 | netif_tx_wake_all_queues(ndev); | |
2150 | ||
1da177e4 | 2151 | return 0; |
1da177e4 LT |
2152 | } |
2153 | ||
0977f817 JC |
2154 | /* Called when something needs to use the ethernet device |
2155 | * Returns 0 for success. | |
2156 | */ | |
1da177e4 LT |
2157 | static int gfar_enet_open(struct net_device *dev) |
2158 | { | |
94e8cc35 | 2159 | struct gfar_private *priv = netdev_priv(dev); |
1da177e4 LT |
2160 | int err; |
2161 | ||
1da177e4 | 2162 | err = init_phy(dev); |
0851133b | 2163 | if (err) |
1da177e4 LT |
2164 | return err; |
2165 | ||
80ec396c CM |
2166 | err = gfar_request_irq(priv); |
2167 | if (err) | |
2168 | return err; | |
2169 | ||
1da177e4 | 2170 | err = startup_gfar(dev); |
0851133b | 2171 | if (err) |
db0e8e3f | 2172 | return err; |
1da177e4 | 2173 | |
2884e5cc AV |
2174 | device_set_wakeup_enable(&dev->dev, priv->wol_en); |
2175 | ||
1da177e4 LT |
2176 | return err; |
2177 | } | |
2178 | ||
54dc79fe | 2179 | static inline struct txfcb *gfar_add_fcb(struct sk_buff *skb) |
0bbaf069 | 2180 | { |
54dc79fe | 2181 | struct txfcb *fcb = (struct txfcb *)skb_push(skb, GMAC_FCB_LEN); |
6c31d55f KG |
2182 | |
2183 | memset(fcb, 0, GMAC_FCB_LEN); | |
0bbaf069 | 2184 | |
0bbaf069 KG |
2185 | return fcb; |
2186 | } | |
2187 | ||
9c4886e5 | 2188 | static inline void gfar_tx_checksum(struct sk_buff *skb, struct txfcb *fcb, |
bc4598bc | 2189 | int fcb_length) |
0bbaf069 | 2190 | { |
0bbaf069 KG |
2191 | /* If we're here, it's a IP packet with a TCP or UDP |
2192 | * payload. We set it to checksum, using a pseudo-header | |
2193 | * we provide | |
2194 | */ | |
3a2e16c8 | 2195 | u8 flags = TXFCB_DEFAULT; |
0bbaf069 | 2196 | |
0977f817 JC |
2197 | /* Tell the controller what the protocol is |
2198 | * And provide the already calculated phcs | |
2199 | */ | |
eddc9ec5 | 2200 | if (ip_hdr(skb)->protocol == IPPROTO_UDP) { |
7f7f5316 | 2201 | flags |= TXFCB_UDP; |
26eb9374 | 2202 | fcb->phcs = (__force __be16)(udp_hdr(skb)->check); |
7f7f5316 | 2203 | } else |
26eb9374 | 2204 | fcb->phcs = (__force __be16)(tcp_hdr(skb)->check); |
0bbaf069 KG |
2205 | |
2206 | /* l3os is the distance between the start of the | |
2207 | * frame (skb->data) and the start of the IP hdr. | |
2208 | * l4os is the distance between the start of the | |
0977f817 JC |
2209 | * l3 hdr and the l4 hdr |
2210 | */ | |
26eb9374 | 2211 | fcb->l3os = (u8)(skb_network_offset(skb) - fcb_length); |
cfe1fc77 | 2212 | fcb->l4os = skb_network_header_len(skb); |
0bbaf069 | 2213 | |
7f7f5316 | 2214 | fcb->flags = flags; |
0bbaf069 KG |
2215 | } |
2216 | ||
7f7f5316 | 2217 | void inline gfar_tx_vlan(struct sk_buff *skb, struct txfcb *fcb) |
0bbaf069 | 2218 | { |
7f7f5316 | 2219 | fcb->flags |= TXFCB_VLN; |
26eb9374 | 2220 | fcb->vlctl = cpu_to_be16(skb_vlan_tag_get(skb)); |
0bbaf069 KG |
2221 | } |
2222 | ||
4669bc90 | 2223 | static inline struct txbd8 *skip_txbd(struct txbd8 *bdp, int stride, |
bc4598bc | 2224 | struct txbd8 *base, int ring_size) |
4669bc90 DH |
2225 | { |
2226 | struct txbd8 *new_bd = bdp + stride; | |
2227 | ||
2228 | return (new_bd >= (base + ring_size)) ? (new_bd - ring_size) : new_bd; | |
2229 | } | |
2230 | ||
2231 | static inline struct txbd8 *next_txbd(struct txbd8 *bdp, struct txbd8 *base, | |
bc4598bc | 2232 | int ring_size) |
4669bc90 DH |
2233 | { |
2234 | return skip_txbd(bdp, 1, base, ring_size); | |
2235 | } | |
2236 | ||
02d88fb4 CM |
2237 | /* eTSEC12: csum generation not supported for some fcb offsets */ |
2238 | static inline bool gfar_csum_errata_12(struct gfar_private *priv, | |
2239 | unsigned long fcb_addr) | |
2240 | { | |
2241 | return (gfar_has_errata(priv, GFAR_ERRATA_12) && | |
2242 | (fcb_addr % 0x20) > 0x18); | |
2243 | } | |
2244 | ||
2245 | /* eTSEC76: csum generation for frames larger than 2500 may | |
2246 | * cause excess delays before start of transmission | |
2247 | */ | |
2248 | static inline bool gfar_csum_errata_76(struct gfar_private *priv, | |
2249 | unsigned int len) | |
2250 | { | |
2251 | return (gfar_has_errata(priv, GFAR_ERRATA_76) && | |
2252 | (len > 2500)); | |
2253 | } | |
2254 | ||
0977f817 JC |
2255 | /* This is called by the kernel when a frame is ready for transmission. |
2256 | * It is pointed to by the dev->hard_start_xmit function pointer | |
2257 | */ | |
1da177e4 LT |
2258 | static int gfar_start_xmit(struct sk_buff *skb, struct net_device *dev) |
2259 | { | |
2260 | struct gfar_private *priv = netdev_priv(dev); | |
a12f801d | 2261 | struct gfar_priv_tx_q *tx_queue = NULL; |
fba4ed03 | 2262 | struct netdev_queue *txq; |
f4983704 | 2263 | struct gfar __iomem *regs = NULL; |
0bbaf069 | 2264 | struct txfcb *fcb = NULL; |
f0ee7acf | 2265 | struct txbd8 *txbdp, *txbdp_start, *base, *txbdp_tstamp = NULL; |
5a5efed4 | 2266 | u32 lstatus; |
0d0cffdc CM |
2267 | int i, rq = 0; |
2268 | int do_tstamp, do_csum, do_vlan; | |
4669bc90 | 2269 | u32 bufaddr; |
50ad076b | 2270 | unsigned int nr_frags, nr_txbds, bytes_sent, fcb_len = 0; |
fba4ed03 SG |
2271 | |
2272 | rq = skb->queue_mapping; | |
2273 | tx_queue = priv->tx_queue[rq]; | |
2274 | txq = netdev_get_tx_queue(dev, rq); | |
a12f801d | 2275 | base = tx_queue->tx_bd_base; |
46ceb60c | 2276 | regs = tx_queue->grp->regs; |
f0ee7acf | 2277 | |
0d0cffdc | 2278 | do_csum = (CHECKSUM_PARTIAL == skb->ip_summed); |
df8a39de | 2279 | do_vlan = skb_vlan_tag_present(skb); |
0d0cffdc CM |
2280 | do_tstamp = (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) && |
2281 | priv->hwts_tx_en; | |
2282 | ||
2283 | if (do_csum || do_vlan) | |
2284 | fcb_len = GMAC_FCB_LEN; | |
2285 | ||
f0ee7acf | 2286 | /* check if time stamp should be generated */ |
0d0cffdc CM |
2287 | if (unlikely(do_tstamp)) |
2288 | fcb_len = GMAC_FCB_LEN + GMAC_TXPAL_LEN; | |
4669bc90 | 2289 | |
5b28beaf | 2290 | /* make space for additional header when fcb is needed */ |
0d0cffdc | 2291 | if (fcb_len && unlikely(skb_headroom(skb) < fcb_len)) { |
54dc79fe SH |
2292 | struct sk_buff *skb_new; |
2293 | ||
0d0cffdc | 2294 | skb_new = skb_realloc_headroom(skb, fcb_len); |
54dc79fe SH |
2295 | if (!skb_new) { |
2296 | dev->stats.tx_errors++; | |
c9974ad4 | 2297 | dev_kfree_skb_any(skb); |
54dc79fe SH |
2298 | return NETDEV_TX_OK; |
2299 | } | |
db83d136 | 2300 | |
313b037c ED |
2301 | if (skb->sk) |
2302 | skb_set_owner_w(skb_new, skb->sk); | |
c9974ad4 | 2303 | dev_consume_skb_any(skb); |
54dc79fe SH |
2304 | skb = skb_new; |
2305 | } | |
2306 | ||
4669bc90 DH |
2307 | /* total number of fragments in the SKB */ |
2308 | nr_frags = skb_shinfo(skb)->nr_frags; | |
2309 | ||
f0ee7acf MR |
2310 | /* calculate the required number of TxBDs for this skb */ |
2311 | if (unlikely(do_tstamp)) | |
2312 | nr_txbds = nr_frags + 2; | |
2313 | else | |
2314 | nr_txbds = nr_frags + 1; | |
2315 | ||
4669bc90 | 2316 | /* check if there is space to queue this packet */ |
f0ee7acf | 2317 | if (nr_txbds > tx_queue->num_txbdfree) { |
4669bc90 | 2318 | /* no space, stop the queue */ |
fba4ed03 | 2319 | netif_tx_stop_queue(txq); |
4669bc90 | 2320 | dev->stats.tx_fifo_errors++; |
4669bc90 DH |
2321 | return NETDEV_TX_BUSY; |
2322 | } | |
1da177e4 LT |
2323 | |
2324 | /* Update transmit stats */ | |
50ad076b CM |
2325 | bytes_sent = skb->len; |
2326 | tx_queue->stats.tx_bytes += bytes_sent; | |
2327 | /* keep Tx bytes on wire for BQL accounting */ | |
2328 | GFAR_CB(skb)->bytes_sent = bytes_sent; | |
1ac9ad13 | 2329 | tx_queue->stats.tx_packets++; |
1da177e4 | 2330 | |
a12f801d | 2331 | txbdp = txbdp_start = tx_queue->cur_tx; |
a7312d58 | 2332 | lstatus = be32_to_cpu(txbdp->lstatus); |
f0ee7acf MR |
2333 | |
2334 | /* Time stamp insertion requires one additional TxBD */ | |
2335 | if (unlikely(do_tstamp)) | |
2336 | txbdp_tstamp = txbdp = next_txbd(txbdp, base, | |
bc4598bc | 2337 | tx_queue->tx_ring_size); |
1da177e4 | 2338 | |
4669bc90 | 2339 | if (nr_frags == 0) { |
a7312d58 CM |
2340 | if (unlikely(do_tstamp)) { |
2341 | u32 lstatus_ts = be32_to_cpu(txbdp_tstamp->lstatus); | |
2342 | ||
2343 | lstatus_ts |= BD_LFLAG(TXBD_LAST | TXBD_INTERRUPT); | |
2344 | txbdp_tstamp->lstatus = cpu_to_be32(lstatus_ts); | |
2345 | } else { | |
f0ee7acf | 2346 | lstatus |= BD_LFLAG(TXBD_LAST | TXBD_INTERRUPT); |
a7312d58 | 2347 | } |
4669bc90 DH |
2348 | } else { |
2349 | /* Place the fragment addresses and lengths into the TxBDs */ | |
2350 | for (i = 0; i < nr_frags; i++) { | |
50ad076b | 2351 | unsigned int frag_len; |
4669bc90 | 2352 | /* Point at the next BD, wrapping as needed */ |
a12f801d | 2353 | txbdp = next_txbd(txbdp, base, tx_queue->tx_ring_size); |
4669bc90 | 2354 | |
50ad076b | 2355 | frag_len = skb_shinfo(skb)->frags[i].size; |
4669bc90 | 2356 | |
a7312d58 | 2357 | lstatus = be32_to_cpu(txbdp->lstatus) | frag_len | |
bc4598bc | 2358 | BD_LFLAG(TXBD_READY); |
4669bc90 DH |
2359 | |
2360 | /* Handle the last BD specially */ | |
2361 | if (i == nr_frags - 1) | |
2362 | lstatus |= BD_LFLAG(TXBD_LAST | TXBD_INTERRUPT); | |
1da177e4 | 2363 | |
369ec162 | 2364 | bufaddr = skb_frag_dma_map(priv->dev, |
2234a722 IC |
2365 | &skb_shinfo(skb)->frags[i], |
2366 | 0, | |
50ad076b | 2367 | frag_len, |
2234a722 | 2368 | DMA_TO_DEVICE); |
0a4b5a24 KH |
2369 | if (unlikely(dma_mapping_error(priv->dev, bufaddr))) |
2370 | goto dma_map_err; | |
4669bc90 DH |
2371 | |
2372 | /* set the TxBD length and buffer pointer */ | |
a7312d58 CM |
2373 | txbdp->bufPtr = cpu_to_be32(bufaddr); |
2374 | txbdp->lstatus = cpu_to_be32(lstatus); | |
4669bc90 DH |
2375 | } |
2376 | ||
a7312d58 | 2377 | lstatus = be32_to_cpu(txbdp_start->lstatus); |
4669bc90 | 2378 | } |
1da177e4 | 2379 | |
9c4886e5 MR |
2380 | /* Add TxPAL between FCB and frame if required */ |
2381 | if (unlikely(do_tstamp)) { | |
2382 | skb_push(skb, GMAC_TXPAL_LEN); | |
2383 | memset(skb->data, 0, GMAC_TXPAL_LEN); | |
2384 | } | |
2385 | ||
0d0cffdc CM |
2386 | /* Add TxFCB if required */ |
2387 | if (fcb_len) { | |
54dc79fe | 2388 | fcb = gfar_add_fcb(skb); |
02d88fb4 | 2389 | lstatus |= BD_LFLAG(TXBD_TOE); |
0d0cffdc CM |
2390 | } |
2391 | ||
2392 | /* Set up checksumming */ | |
2393 | if (do_csum) { | |
2394 | gfar_tx_checksum(skb, fcb, fcb_len); | |
02d88fb4 CM |
2395 | |
2396 | if (unlikely(gfar_csum_errata_12(priv, (unsigned long)fcb)) || | |
2397 | unlikely(gfar_csum_errata_76(priv, skb->len))) { | |
4363c2fd AD |
2398 | __skb_pull(skb, GMAC_FCB_LEN); |
2399 | skb_checksum_help(skb); | |
0d0cffdc CM |
2400 | if (do_vlan || do_tstamp) { |
2401 | /* put back a new fcb for vlan/tstamp TOE */ | |
2402 | fcb = gfar_add_fcb(skb); | |
2403 | } else { | |
2404 | /* Tx TOE not used */ | |
2405 | lstatus &= ~(BD_LFLAG(TXBD_TOE)); | |
2406 | fcb = NULL; | |
2407 | } | |
4363c2fd | 2408 | } |
0bbaf069 KG |
2409 | } |
2410 | ||
0d0cffdc | 2411 | if (do_vlan) |
54dc79fe | 2412 | gfar_tx_vlan(skb, fcb); |
0bbaf069 | 2413 | |
f0ee7acf MR |
2414 | /* Setup tx hardware time stamping if requested */ |
2415 | if (unlikely(do_tstamp)) { | |
2244d07b | 2416 | skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS; |
f0ee7acf | 2417 | fcb->ptp = 1; |
f0ee7acf MR |
2418 | } |
2419 | ||
0a4b5a24 KH |
2420 | bufaddr = dma_map_single(priv->dev, skb->data, skb_headlen(skb), |
2421 | DMA_TO_DEVICE); | |
2422 | if (unlikely(dma_mapping_error(priv->dev, bufaddr))) | |
2423 | goto dma_map_err; | |
2424 | ||
a7312d58 | 2425 | txbdp_start->bufPtr = cpu_to_be32(bufaddr); |
1da177e4 | 2426 | |
0977f817 | 2427 | /* If time stamping is requested one additional TxBD must be set up. The |
f0ee7acf MR |
2428 | * first TxBD points to the FCB and must have a data length of |
2429 | * GMAC_FCB_LEN. The second TxBD points to the actual frame data with | |
2430 | * the full frame length. | |
2431 | */ | |
2432 | if (unlikely(do_tstamp)) { | |
a7312d58 CM |
2433 | u32 lstatus_ts = be32_to_cpu(txbdp_tstamp->lstatus); |
2434 | ||
2435 | bufaddr = be32_to_cpu(txbdp_start->bufPtr); | |
2436 | bufaddr += fcb_len; | |
2437 | lstatus_ts |= BD_LFLAG(TXBD_READY) | | |
2438 | (skb_headlen(skb) - fcb_len); | |
2439 | ||
2440 | txbdp_tstamp->bufPtr = cpu_to_be32(bufaddr); | |
2441 | txbdp_tstamp->lstatus = cpu_to_be32(lstatus_ts); | |
f0ee7acf MR |
2442 | lstatus |= BD_LFLAG(TXBD_CRC | TXBD_READY) | GMAC_FCB_LEN; |
2443 | } else { | |
2444 | lstatus |= BD_LFLAG(TXBD_CRC | TXBD_READY) | skb_headlen(skb); | |
2445 | } | |
1da177e4 | 2446 | |
50ad076b | 2447 | netdev_tx_sent_queue(txq, bytes_sent); |
d8a0f1b0 | 2448 | |
d55398ba | 2449 | gfar_wmb(); |
7f7f5316 | 2450 | |
a7312d58 | 2451 | txbdp_start->lstatus = cpu_to_be32(lstatus); |
4669bc90 | 2452 | |
d55398ba | 2453 | gfar_wmb(); /* force lstatus write before tx_skbuff */ |
0eddba52 AV |
2454 | |
2455 | tx_queue->tx_skbuff[tx_queue->skb_curtx] = skb; | |
2456 | ||
4669bc90 | 2457 | /* Update the current skb pointer to the next entry we will use |
0977f817 JC |
2458 | * (wrapping if necessary) |
2459 | */ | |
a12f801d | 2460 | tx_queue->skb_curtx = (tx_queue->skb_curtx + 1) & |
bc4598bc | 2461 | TX_RING_MOD_MASK(tx_queue->tx_ring_size); |
4669bc90 | 2462 | |
a12f801d | 2463 | tx_queue->cur_tx = next_txbd(txbdp, base, tx_queue->tx_ring_size); |
4669bc90 | 2464 | |
bc602280 CM |
2465 | /* We can work in parallel with gfar_clean_tx_ring(), except |
2466 | * when modifying num_txbdfree. Note that we didn't grab the lock | |
2467 | * when we were reading the num_txbdfree and checking for available | |
2468 | * space, that's because outside of this function it can only grow. | |
2469 | */ | |
2470 | spin_lock_bh(&tx_queue->txlock); | |
4669bc90 | 2471 | /* reduce TxBD free count */ |
f0ee7acf | 2472 | tx_queue->num_txbdfree -= (nr_txbds); |
bc602280 | 2473 | spin_unlock_bh(&tx_queue->txlock); |
1da177e4 LT |
2474 | |
2475 | /* If the next BD still needs to be cleaned up, then the bds | |
0977f817 JC |
2476 | * are full. We need to tell the kernel to stop sending us stuff. |
2477 | */ | |
a12f801d | 2478 | if (!tx_queue->num_txbdfree) { |
fba4ed03 | 2479 | netif_tx_stop_queue(txq); |
1da177e4 | 2480 | |
09f75cd7 | 2481 | dev->stats.tx_fifo_errors++; |
1da177e4 LT |
2482 | } |
2483 | ||
1da177e4 | 2484 | /* Tell the DMA to go go go */ |
fba4ed03 | 2485 | gfar_write(®s->tstat, TSTAT_CLEAR_THALT >> tx_queue->qindex); |
1da177e4 | 2486 | |
54dc79fe | 2487 | return NETDEV_TX_OK; |
0a4b5a24 KH |
2488 | |
2489 | dma_map_err: | |
2490 | txbdp = next_txbd(txbdp_start, base, tx_queue->tx_ring_size); | |
2491 | if (do_tstamp) | |
2492 | txbdp = next_txbd(txbdp, base, tx_queue->tx_ring_size); | |
2493 | for (i = 0; i < nr_frags; i++) { | |
a7312d58 | 2494 | lstatus = be32_to_cpu(txbdp->lstatus); |
0a4b5a24 KH |
2495 | if (!(lstatus & BD_LFLAG(TXBD_READY))) |
2496 | break; | |
2497 | ||
a7312d58 CM |
2498 | lstatus &= ~BD_LFLAG(TXBD_READY); |
2499 | txbdp->lstatus = cpu_to_be32(lstatus); | |
2500 | bufaddr = be32_to_cpu(txbdp->bufPtr); | |
2501 | dma_unmap_page(priv->dev, bufaddr, be16_to_cpu(txbdp->length), | |
0a4b5a24 KH |
2502 | DMA_TO_DEVICE); |
2503 | txbdp = next_txbd(txbdp, base, tx_queue->tx_ring_size); | |
2504 | } | |
2505 | gfar_wmb(); | |
2506 | dev_kfree_skb_any(skb); | |
2507 | return NETDEV_TX_OK; | |
1da177e4 LT |
2508 | } |
2509 | ||
2510 | /* Stops the kernel queue, and halts the controller */ | |
2511 | static int gfar_close(struct net_device *dev) | |
2512 | { | |
2513 | struct gfar_private *priv = netdev_priv(dev); | |
bea3348e | 2514 | |
ab939905 | 2515 | cancel_work_sync(&priv->reset_task); |
1da177e4 LT |
2516 | stop_gfar(dev); |
2517 | ||
bb40dcbb AF |
2518 | /* Disconnect from the PHY */ |
2519 | phy_disconnect(priv->phydev); | |
2520 | priv->phydev = NULL; | |
1da177e4 | 2521 | |
80ec396c CM |
2522 | gfar_free_irq(priv); |
2523 | ||
1da177e4 LT |
2524 | return 0; |
2525 | } | |
2526 | ||
1da177e4 | 2527 | /* Changes the mac address if the controller is not running. */ |
f162b9d5 | 2528 | static int gfar_set_mac_address(struct net_device *dev) |
1da177e4 | 2529 | { |
7f7f5316 | 2530 | gfar_set_mac_for_addr(dev, 0, dev->dev_addr); |
1da177e4 LT |
2531 | |
2532 | return 0; | |
2533 | } | |
2534 | ||
1da177e4 LT |
2535 | static int gfar_change_mtu(struct net_device *dev, int new_mtu) |
2536 | { | |
1da177e4 | 2537 | struct gfar_private *priv = netdev_priv(dev); |
0bbaf069 KG |
2538 | int frame_size = new_mtu + ETH_HLEN; |
2539 | ||
1da177e4 | 2540 | if ((frame_size < 64) || (frame_size > JUMBO_FRAME_SIZE)) { |
59deab26 | 2541 | netif_err(priv, drv, dev, "Invalid MTU setting\n"); |
1da177e4 LT |
2542 | return -EINVAL; |
2543 | } | |
2544 | ||
0851133b CM |
2545 | while (test_and_set_bit_lock(GFAR_RESETTING, &priv->state)) |
2546 | cpu_relax(); | |
2547 | ||
88302648 | 2548 | if (dev->flags & IFF_UP) |
1da177e4 LT |
2549 | stop_gfar(dev); |
2550 | ||
1da177e4 LT |
2551 | dev->mtu = new_mtu; |
2552 | ||
88302648 | 2553 | if (dev->flags & IFF_UP) |
1da177e4 LT |
2554 | startup_gfar(dev); |
2555 | ||
0851133b CM |
2556 | clear_bit_unlock(GFAR_RESETTING, &priv->state); |
2557 | ||
1da177e4 LT |
2558 | return 0; |
2559 | } | |
2560 | ||
0851133b CM |
2561 | void reset_gfar(struct net_device *ndev) |
2562 | { | |
2563 | struct gfar_private *priv = netdev_priv(ndev); | |
2564 | ||
2565 | while (test_and_set_bit_lock(GFAR_RESETTING, &priv->state)) | |
2566 | cpu_relax(); | |
2567 | ||
2568 | stop_gfar(ndev); | |
2569 | startup_gfar(ndev); | |
2570 | ||
2571 | clear_bit_unlock(GFAR_RESETTING, &priv->state); | |
2572 | } | |
2573 | ||
ab939905 | 2574 | /* gfar_reset_task gets scheduled when a packet has not been |
1da177e4 LT |
2575 | * transmitted after a set amount of time. |
2576 | * For now, assume that clearing out all the structures, and | |
ab939905 SS |
2577 | * starting over will fix the problem. |
2578 | */ | |
2579 | static void gfar_reset_task(struct work_struct *work) | |
1da177e4 | 2580 | { |
ab939905 | 2581 | struct gfar_private *priv = container_of(work, struct gfar_private, |
bc4598bc | 2582 | reset_task); |
0851133b | 2583 | reset_gfar(priv->ndev); |
1da177e4 LT |
2584 | } |
2585 | ||
ab939905 SS |
2586 | static void gfar_timeout(struct net_device *dev) |
2587 | { | |
2588 | struct gfar_private *priv = netdev_priv(dev); | |
2589 | ||
2590 | dev->stats.tx_errors++; | |
2591 | schedule_work(&priv->reset_task); | |
2592 | } | |
2593 | ||
acbc0f03 EL |
2594 | static void gfar_align_skb(struct sk_buff *skb) |
2595 | { | |
2596 | /* We need the data buffer to be aligned properly. We will reserve | |
2597 | * as many bytes as needed to align the data properly | |
2598 | */ | |
2599 | skb_reserve(skb, RXBUF_ALIGNMENT - | |
bc4598bc | 2600 | (((unsigned long) skb->data) & (RXBUF_ALIGNMENT - 1))); |
acbc0f03 EL |
2601 | } |
2602 | ||
1da177e4 | 2603 | /* Interrupt Handler for Transmit complete */ |
c233cf40 | 2604 | static void gfar_clean_tx_ring(struct gfar_priv_tx_q *tx_queue) |
1da177e4 | 2605 | { |
a12f801d | 2606 | struct net_device *dev = tx_queue->dev; |
d8a0f1b0 | 2607 | struct netdev_queue *txq; |
d080cd63 | 2608 | struct gfar_private *priv = netdev_priv(dev); |
f0ee7acf | 2609 | struct txbd8 *bdp, *next = NULL; |
4669bc90 | 2610 | struct txbd8 *lbdp = NULL; |
a12f801d | 2611 | struct txbd8 *base = tx_queue->tx_bd_base; |
4669bc90 DH |
2612 | struct sk_buff *skb; |
2613 | int skb_dirtytx; | |
a12f801d | 2614 | int tx_ring_size = tx_queue->tx_ring_size; |
f0ee7acf | 2615 | int frags = 0, nr_txbds = 0; |
4669bc90 | 2616 | int i; |
d080cd63 | 2617 | int howmany = 0; |
d8a0f1b0 PG |
2618 | int tqi = tx_queue->qindex; |
2619 | unsigned int bytes_sent = 0; | |
4669bc90 | 2620 | u32 lstatus; |
f0ee7acf | 2621 | size_t buflen; |
1da177e4 | 2622 | |
d8a0f1b0 | 2623 | txq = netdev_get_tx_queue(dev, tqi); |
a12f801d SG |
2624 | bdp = tx_queue->dirty_tx; |
2625 | skb_dirtytx = tx_queue->skb_dirtytx; | |
1da177e4 | 2626 | |
a12f801d | 2627 | while ((skb = tx_queue->tx_skbuff[skb_dirtytx])) { |
a3bc1f11 | 2628 | |
4669bc90 | 2629 | frags = skb_shinfo(skb)->nr_frags; |
f0ee7acf | 2630 | |
0977f817 | 2631 | /* When time stamping, one additional TxBD must be freed. |
f0ee7acf MR |
2632 | * Also, we need to dma_unmap_single() the TxPAL. |
2633 | */ | |
2244d07b | 2634 | if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_IN_PROGRESS)) |
f0ee7acf MR |
2635 | nr_txbds = frags + 2; |
2636 | else | |
2637 | nr_txbds = frags + 1; | |
2638 | ||
2639 | lbdp = skip_txbd(bdp, nr_txbds - 1, base, tx_ring_size); | |
1da177e4 | 2640 | |
a7312d58 | 2641 | lstatus = be32_to_cpu(lbdp->lstatus); |
1da177e4 | 2642 | |
4669bc90 DH |
2643 | /* Only clean completed frames */ |
2644 | if ((lstatus & BD_LFLAG(TXBD_READY)) && | |
bc4598bc | 2645 | (lstatus & BD_LENGTH_MASK)) |
4669bc90 DH |
2646 | break; |
2647 | ||
2244d07b | 2648 | if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_IN_PROGRESS)) { |
f0ee7acf | 2649 | next = next_txbd(bdp, base, tx_ring_size); |
a7312d58 CM |
2650 | buflen = be16_to_cpu(next->length) + |
2651 | GMAC_FCB_LEN + GMAC_TXPAL_LEN; | |
f0ee7acf | 2652 | } else |
a7312d58 | 2653 | buflen = be16_to_cpu(bdp->length); |
f0ee7acf | 2654 | |
a7312d58 | 2655 | dma_unmap_single(priv->dev, be32_to_cpu(bdp->bufPtr), |
bc4598bc | 2656 | buflen, DMA_TO_DEVICE); |
f0ee7acf | 2657 | |
2244d07b | 2658 | if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_IN_PROGRESS)) { |
f0ee7acf MR |
2659 | struct skb_shared_hwtstamps shhwtstamps; |
2660 | u64 *ns = (u64*) (((u32)skb->data + 0x10) & ~0x7); | |
bc4598bc | 2661 | |
f0ee7acf MR |
2662 | memset(&shhwtstamps, 0, sizeof(shhwtstamps)); |
2663 | shhwtstamps.hwtstamp = ns_to_ktime(*ns); | |
9c4886e5 | 2664 | skb_pull(skb, GMAC_FCB_LEN + GMAC_TXPAL_LEN); |
f0ee7acf | 2665 | skb_tstamp_tx(skb, &shhwtstamps); |
a7312d58 | 2666 | gfar_clear_txbd_status(bdp); |
f0ee7acf MR |
2667 | bdp = next; |
2668 | } | |
81183059 | 2669 | |
a7312d58 | 2670 | gfar_clear_txbd_status(bdp); |
4669bc90 | 2671 | bdp = next_txbd(bdp, base, tx_ring_size); |
d080cd63 | 2672 | |
4669bc90 | 2673 | for (i = 0; i < frags; i++) { |
a7312d58 CM |
2674 | dma_unmap_page(priv->dev, be32_to_cpu(bdp->bufPtr), |
2675 | be16_to_cpu(bdp->length), | |
2676 | DMA_TO_DEVICE); | |
2677 | gfar_clear_txbd_status(bdp); | |
4669bc90 DH |
2678 | bdp = next_txbd(bdp, base, tx_ring_size); |
2679 | } | |
1da177e4 | 2680 | |
50ad076b | 2681 | bytes_sent += GFAR_CB(skb)->bytes_sent; |
d8a0f1b0 | 2682 | |
acb600de | 2683 | dev_kfree_skb_any(skb); |
0fd56bb5 | 2684 | |
a12f801d | 2685 | tx_queue->tx_skbuff[skb_dirtytx] = NULL; |
d080cd63 | 2686 | |
4669bc90 | 2687 | skb_dirtytx = (skb_dirtytx + 1) & |
bc4598bc | 2688 | TX_RING_MOD_MASK(tx_ring_size); |
4669bc90 DH |
2689 | |
2690 | howmany++; | |
bc602280 | 2691 | spin_lock(&tx_queue->txlock); |
f0ee7acf | 2692 | tx_queue->num_txbdfree += nr_txbds; |
bc602280 | 2693 | spin_unlock(&tx_queue->txlock); |
4669bc90 | 2694 | } |
1da177e4 | 2695 | |
4669bc90 | 2696 | /* If we freed a buffer, we can restart transmission, if necessary */ |
0851133b CM |
2697 | if (tx_queue->num_txbdfree && |
2698 | netif_tx_queue_stopped(txq) && | |
2699 | !(test_bit(GFAR_DOWN, &priv->state))) | |
2700 | netif_wake_subqueue(priv->ndev, tqi); | |
1da177e4 | 2701 | |
4669bc90 | 2702 | /* Update dirty indicators */ |
a12f801d SG |
2703 | tx_queue->skb_dirtytx = skb_dirtytx; |
2704 | tx_queue->dirty_tx = bdp; | |
1da177e4 | 2705 | |
d8a0f1b0 | 2706 | netdev_tx_completed_queue(txq, howmany, bytes_sent); |
d080cd63 DH |
2707 | } |
2708 | ||
2281a0f3 | 2709 | static struct sk_buff *gfar_alloc_skb(struct net_device *dev) |
1da177e4 LT |
2710 | { |
2711 | struct gfar_private *priv = netdev_priv(dev); | |
acb600de | 2712 | struct sk_buff *skb; |
1da177e4 | 2713 | |
acbc0f03 | 2714 | skb = netdev_alloc_skb(dev, priv->rx_buffer_size + RXBUF_ALIGNMENT); |
815b97c6 | 2715 | if (!skb) |
1da177e4 LT |
2716 | return NULL; |
2717 | ||
acbc0f03 | 2718 | gfar_align_skb(skb); |
7f7f5316 | 2719 | |
acbc0f03 EL |
2720 | return skb; |
2721 | } | |
2722 | ||
91c53f76 | 2723 | static struct sk_buff *gfar_new_skb(struct net_device *dev, dma_addr_t *bufaddr) |
acbc0f03 | 2724 | { |
0a4b5a24 KH |
2725 | struct gfar_private *priv = netdev_priv(dev); |
2726 | struct sk_buff *skb; | |
2727 | dma_addr_t addr; | |
2728 | ||
2729 | skb = gfar_alloc_skb(dev); | |
2730 | if (!skb) | |
2731 | return NULL; | |
2732 | ||
2733 | addr = dma_map_single(priv->dev, skb->data, | |
2734 | priv->rx_buffer_size, DMA_FROM_DEVICE); | |
2735 | if (unlikely(dma_mapping_error(priv->dev, addr))) { | |
2736 | dev_kfree_skb_any(skb); | |
2737 | return NULL; | |
2738 | } | |
2739 | ||
2740 | *bufaddr = addr; | |
2741 | return skb; | |
1da177e4 LT |
2742 | } |
2743 | ||
298e1a9e | 2744 | static inline void count_errors(unsigned short status, struct net_device *dev) |
1da177e4 | 2745 | { |
298e1a9e | 2746 | struct gfar_private *priv = netdev_priv(dev); |
09f75cd7 | 2747 | struct net_device_stats *stats = &dev->stats; |
1da177e4 LT |
2748 | struct gfar_extra_stats *estats = &priv->extra_stats; |
2749 | ||
0977f817 | 2750 | /* If the packet was truncated, none of the other errors matter */ |
1da177e4 LT |
2751 | if (status & RXBD_TRUNCATED) { |
2752 | stats->rx_length_errors++; | |
2753 | ||
212079df | 2754 | atomic64_inc(&estats->rx_trunc); |
1da177e4 LT |
2755 | |
2756 | return; | |
2757 | } | |
2758 | /* Count the errors, if there were any */ | |
2759 | if (status & (RXBD_LARGE | RXBD_SHORT)) { | |
2760 | stats->rx_length_errors++; | |
2761 | ||
2762 | if (status & RXBD_LARGE) | |
212079df | 2763 | atomic64_inc(&estats->rx_large); |
1da177e4 | 2764 | else |
212079df | 2765 | atomic64_inc(&estats->rx_short); |
1da177e4 LT |
2766 | } |
2767 | if (status & RXBD_NONOCTET) { | |
2768 | stats->rx_frame_errors++; | |
212079df | 2769 | atomic64_inc(&estats->rx_nonoctet); |
1da177e4 LT |
2770 | } |
2771 | if (status & RXBD_CRCERR) { | |
212079df | 2772 | atomic64_inc(&estats->rx_crcerr); |
1da177e4 LT |
2773 | stats->rx_crc_errors++; |
2774 | } | |
2775 | if (status & RXBD_OVERRUN) { | |
212079df | 2776 | atomic64_inc(&estats->rx_overrun); |
1da177e4 LT |
2777 | stats->rx_crc_errors++; |
2778 | } | |
2779 | } | |
2780 | ||
f4983704 | 2781 | irqreturn_t gfar_receive(int irq, void *grp_id) |
1da177e4 | 2782 | { |
aeb12c5e CM |
2783 | struct gfar_priv_grp *grp = (struct gfar_priv_grp *)grp_id; |
2784 | unsigned long flags; | |
2785 | u32 imask; | |
2786 | ||
2787 | if (likely(napi_schedule_prep(&grp->napi_rx))) { | |
2788 | spin_lock_irqsave(&grp->grplock, flags); | |
2789 | imask = gfar_read(&grp->regs->imask); | |
2790 | imask &= IMASK_RX_DISABLED; | |
2791 | gfar_write(&grp->regs->imask, imask); | |
2792 | spin_unlock_irqrestore(&grp->grplock, flags); | |
2793 | __napi_schedule(&grp->napi_rx); | |
2794 | } else { | |
2795 | /* Clear IEVENT, so interrupts aren't called again | |
2796 | * because of the packets that have already arrived. | |
2797 | */ | |
2798 | gfar_write(&grp->regs->ievent, IEVENT_RX_MASK); | |
2799 | } | |
2800 | ||
2801 | return IRQ_HANDLED; | |
2802 | } | |
2803 | ||
2804 | /* Interrupt Handler for Transmit complete */ | |
2805 | static irqreturn_t gfar_transmit(int irq, void *grp_id) | |
2806 | { | |
2807 | struct gfar_priv_grp *grp = (struct gfar_priv_grp *)grp_id; | |
2808 | unsigned long flags; | |
2809 | u32 imask; | |
2810 | ||
2811 | if (likely(napi_schedule_prep(&grp->napi_tx))) { | |
2812 | spin_lock_irqsave(&grp->grplock, flags); | |
2813 | imask = gfar_read(&grp->regs->imask); | |
2814 | imask &= IMASK_TX_DISABLED; | |
2815 | gfar_write(&grp->regs->imask, imask); | |
2816 | spin_unlock_irqrestore(&grp->grplock, flags); | |
2817 | __napi_schedule(&grp->napi_tx); | |
2818 | } else { | |
2819 | /* Clear IEVENT, so interrupts aren't called again | |
2820 | * because of the packets that have already arrived. | |
2821 | */ | |
2822 | gfar_write(&grp->regs->ievent, IEVENT_TX_MASK); | |
2823 | } | |
2824 | ||
1da177e4 LT |
2825 | return IRQ_HANDLED; |
2826 | } | |
2827 | ||
0bbaf069 KG |
2828 | static inline void gfar_rx_checksum(struct sk_buff *skb, struct rxfcb *fcb) |
2829 | { | |
2830 | /* If valid headers were found, and valid sums | |
2831 | * were verified, then we tell the kernel that no | |
0977f817 JC |
2832 | * checksumming is necessary. Otherwise, it is [FIXME] |
2833 | */ | |
26eb9374 CM |
2834 | if ((be16_to_cpu(fcb->flags) & RXFCB_CSUM_MASK) == |
2835 | (RXFCB_CIP | RXFCB_CTU)) | |
0bbaf069 KG |
2836 | skb->ip_summed = CHECKSUM_UNNECESSARY; |
2837 | else | |
bc8acf2c | 2838 | skb_checksum_none_assert(skb); |
0bbaf069 KG |
2839 | } |
2840 | ||
0977f817 | 2841 | /* gfar_process_frame() -- handle one incoming packet if skb isn't NULL. */ |
61db26c6 CM |
2842 | static void gfar_process_frame(struct net_device *dev, struct sk_buff *skb, |
2843 | int amount_pull, struct napi_struct *napi) | |
1da177e4 LT |
2844 | { |
2845 | struct gfar_private *priv = netdev_priv(dev); | |
0bbaf069 | 2846 | struct rxfcb *fcb = NULL; |
1da177e4 | 2847 | |
2c2db48a DH |
2848 | /* fcb is at the beginning if exists */ |
2849 | fcb = (struct rxfcb *)skb->data; | |
0bbaf069 | 2850 | |
0977f817 JC |
2851 | /* Remove the FCB from the skb |
2852 | * Remove the padded bytes, if there are any | |
2853 | */ | |
f74dac08 SG |
2854 | if (amount_pull) { |
2855 | skb_record_rx_queue(skb, fcb->rq); | |
2c2db48a | 2856 | skb_pull(skb, amount_pull); |
f74dac08 | 2857 | } |
0bbaf069 | 2858 | |
cc772ab7 MR |
2859 | /* Get receive timestamp from the skb */ |
2860 | if (priv->hwts_rx_en) { | |
2861 | struct skb_shared_hwtstamps *shhwtstamps = skb_hwtstamps(skb); | |
2862 | u64 *ns = (u64 *) skb->data; | |
bc4598bc | 2863 | |
cc772ab7 MR |
2864 | memset(shhwtstamps, 0, sizeof(*shhwtstamps)); |
2865 | shhwtstamps->hwtstamp = ns_to_ktime(*ns); | |
2866 | } | |
2867 | ||
2868 | if (priv->padding) | |
2869 | skb_pull(skb, priv->padding); | |
2870 | ||
8b3afe95 | 2871 | if (dev->features & NETIF_F_RXCSUM) |
2c2db48a | 2872 | gfar_rx_checksum(skb, fcb); |
0bbaf069 | 2873 | |
2c2db48a DH |
2874 | /* Tell the skb what kind of packet this is */ |
2875 | skb->protocol = eth_type_trans(skb, dev); | |
1da177e4 | 2876 | |
f646968f | 2877 | /* There's need to check for NETIF_F_HW_VLAN_CTAG_RX here. |
32f7fd44 JP |
2878 | * Even if vlan rx accel is disabled, on some chips |
2879 | * RXFCB_VLN is pseudo randomly set. | |
2880 | */ | |
f646968f | 2881 | if (dev->features & NETIF_F_HW_VLAN_CTAG_RX && |
26eb9374 CM |
2882 | be16_to_cpu(fcb->flags) & RXFCB_VLN) |
2883 | __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), | |
2884 | be16_to_cpu(fcb->vlctl)); | |
87c288c6 | 2885 | |
2c2db48a | 2886 | /* Send the packet up the stack */ |
953d2768 | 2887 | napi_gro_receive(napi, skb); |
0bbaf069 | 2888 | |
1da177e4 LT |
2889 | } |
2890 | ||
2891 | /* gfar_clean_rx_ring() -- Processes each frame in the rx ring | |
2281a0f3 JC |
2892 | * until the budget/quota has been reached. Returns the number |
2893 | * of frames handled | |
1da177e4 | 2894 | */ |
a12f801d | 2895 | int gfar_clean_rx_ring(struct gfar_priv_rx_q *rx_queue, int rx_work_limit) |
1da177e4 | 2896 | { |
a12f801d | 2897 | struct net_device *dev = rx_queue->dev; |
31de198b | 2898 | struct rxbd8 *bdp, *base; |
1da177e4 | 2899 | struct sk_buff *skb; |
2c2db48a DH |
2900 | int pkt_len; |
2901 | int amount_pull; | |
1da177e4 LT |
2902 | int howmany = 0; |
2903 | struct gfar_private *priv = netdev_priv(dev); | |
2904 | ||
2905 | /* Get the first full descriptor */ | |
a12f801d SG |
2906 | bdp = rx_queue->cur_rx; |
2907 | base = rx_queue->rx_bd_base; | |
1da177e4 | 2908 | |
ba779711 | 2909 | amount_pull = priv->uses_rxfcb ? GMAC_FCB_LEN : 0; |
2c2db48a | 2910 | |
a7312d58 | 2911 | while (!(be16_to_cpu(bdp->status) & RXBD_EMPTY) && rx_work_limit--) { |
815b97c6 | 2912 | struct sk_buff *newskb; |
0a4b5a24 | 2913 | dma_addr_t bufaddr; |
bc4598bc | 2914 | |
3b6330ce | 2915 | rmb(); |
815b97c6 AF |
2916 | |
2917 | /* Add another skb for the future */ | |
0a4b5a24 | 2918 | newskb = gfar_new_skb(dev, &bufaddr); |
815b97c6 | 2919 | |
a12f801d | 2920 | skb = rx_queue->rx_skbuff[rx_queue->skb_currx]; |
1da177e4 | 2921 | |
a7312d58 | 2922 | dma_unmap_single(priv->dev, be32_to_cpu(bdp->bufPtr), |
bc4598bc | 2923 | priv->rx_buffer_size, DMA_FROM_DEVICE); |
81183059 | 2924 | |
a7312d58 CM |
2925 | if (unlikely(!(be16_to_cpu(bdp->status) & RXBD_ERR) && |
2926 | be16_to_cpu(bdp->length) > priv->rx_buffer_size)) | |
2927 | bdp->status = cpu_to_be16(RXBD_LARGE); | |
63b88b90 | 2928 | |
815b97c6 | 2929 | /* We drop the frame if we failed to allocate a new buffer */ |
a7312d58 CM |
2930 | if (unlikely(!newskb || |
2931 | !(be16_to_cpu(bdp->status) & RXBD_LAST) || | |
2932 | be16_to_cpu(bdp->status) & RXBD_ERR)) { | |
2933 | count_errors(be16_to_cpu(bdp->status), dev); | |
815b97c6 | 2934 | |
0a4b5a24 | 2935 | if (unlikely(!newskb)) { |
815b97c6 | 2936 | newskb = skb; |
a7312d58 | 2937 | bufaddr = be32_to_cpu(bdp->bufPtr); |
0a4b5a24 | 2938 | } else if (skb) |
acb600de | 2939 | dev_kfree_skb(skb); |
815b97c6 | 2940 | } else { |
1da177e4 | 2941 | /* Increment the number of packets */ |
a7f38041 | 2942 | rx_queue->stats.rx_packets++; |
1da177e4 LT |
2943 | howmany++; |
2944 | ||
2c2db48a | 2945 | if (likely(skb)) { |
a7312d58 CM |
2946 | pkt_len = be16_to_cpu(bdp->length) - |
2947 | ETH_FCS_LEN; | |
2c2db48a DH |
2948 | /* Remove the FCS from the packet length */ |
2949 | skb_put(skb, pkt_len); | |
a7f38041 | 2950 | rx_queue->stats.rx_bytes += pkt_len; |
f74dac08 | 2951 | skb_record_rx_queue(skb, rx_queue->qindex); |
cd754a57 | 2952 | gfar_process_frame(dev, skb, amount_pull, |
aeb12c5e | 2953 | &rx_queue->grp->napi_rx); |
2c2db48a DH |
2954 | |
2955 | } else { | |
59deab26 | 2956 | netif_warn(priv, rx_err, dev, "Missing skb!\n"); |
a7f38041 | 2957 | rx_queue->stats.rx_dropped++; |
212079df | 2958 | atomic64_inc(&priv->extra_stats.rx_skbmissing); |
2c2db48a | 2959 | } |
1da177e4 | 2960 | |
1da177e4 LT |
2961 | } |
2962 | ||
a12f801d | 2963 | rx_queue->rx_skbuff[rx_queue->skb_currx] = newskb; |
1da177e4 | 2964 | |
815b97c6 | 2965 | /* Setup the new bdp */ |
0a4b5a24 | 2966 | gfar_init_rxbdp(rx_queue, bdp, bufaddr); |
1da177e4 | 2967 | |
45b679c9 MP |
2968 | /* Update Last Free RxBD pointer for LFC */ |
2969 | if (unlikely(rx_queue->rfbptr && priv->tx_actual_en)) | |
2970 | gfar_write(rx_queue->rfbptr, (u32)bdp); | |
2971 | ||
1da177e4 | 2972 | /* Update to the next pointer */ |
a12f801d | 2973 | bdp = next_bd(bdp, base, rx_queue->rx_ring_size); |
1da177e4 LT |
2974 | |
2975 | /* update to point at the next skb */ | |
bc4598bc JC |
2976 | rx_queue->skb_currx = (rx_queue->skb_currx + 1) & |
2977 | RX_RING_MOD_MASK(rx_queue->rx_ring_size); | |
1da177e4 LT |
2978 | } |
2979 | ||
2980 | /* Update the current rxbd pointer to be the next one */ | |
a12f801d | 2981 | rx_queue->cur_rx = bdp; |
1da177e4 | 2982 | |
1da177e4 LT |
2983 | return howmany; |
2984 | } | |
2985 | ||
aeb12c5e | 2986 | static int gfar_poll_rx_sq(struct napi_struct *napi, int budget) |
5eaedf31 CM |
2987 | { |
2988 | struct gfar_priv_grp *gfargrp = | |
aeb12c5e | 2989 | container_of(napi, struct gfar_priv_grp, napi_rx); |
5eaedf31 | 2990 | struct gfar __iomem *regs = gfargrp->regs; |
71ff9e3d | 2991 | struct gfar_priv_rx_q *rx_queue = gfargrp->rx_queue; |
5eaedf31 CM |
2992 | int work_done = 0; |
2993 | ||
2994 | /* Clear IEVENT, so interrupts aren't called again | |
2995 | * because of the packets that have already arrived | |
2996 | */ | |
aeb12c5e | 2997 | gfar_write(®s->ievent, IEVENT_RX_MASK); |
5eaedf31 CM |
2998 | |
2999 | work_done = gfar_clean_rx_ring(rx_queue, budget); | |
3000 | ||
3001 | if (work_done < budget) { | |
aeb12c5e | 3002 | u32 imask; |
5eaedf31 CM |
3003 | napi_complete(napi); |
3004 | /* Clear the halt bit in RSTAT */ | |
3005 | gfar_write(®s->rstat, gfargrp->rstat); | |
3006 | ||
aeb12c5e CM |
3007 | spin_lock_irq(&gfargrp->grplock); |
3008 | imask = gfar_read(®s->imask); | |
3009 | imask |= IMASK_RX_DEFAULT; | |
3010 | gfar_write(®s->imask, imask); | |
3011 | spin_unlock_irq(&gfargrp->grplock); | |
5eaedf31 CM |
3012 | } |
3013 | ||
3014 | return work_done; | |
3015 | } | |
3016 | ||
aeb12c5e | 3017 | static int gfar_poll_tx_sq(struct napi_struct *napi, int budget) |
1da177e4 | 3018 | { |
bc4598bc | 3019 | struct gfar_priv_grp *gfargrp = |
aeb12c5e CM |
3020 | container_of(napi, struct gfar_priv_grp, napi_tx); |
3021 | struct gfar __iomem *regs = gfargrp->regs; | |
71ff9e3d | 3022 | struct gfar_priv_tx_q *tx_queue = gfargrp->tx_queue; |
aeb12c5e CM |
3023 | u32 imask; |
3024 | ||
3025 | /* Clear IEVENT, so interrupts aren't called again | |
3026 | * because of the packets that have already arrived | |
3027 | */ | |
3028 | gfar_write(®s->ievent, IEVENT_TX_MASK); | |
3029 | ||
3030 | /* run Tx cleanup to completion */ | |
3031 | if (tx_queue->tx_skbuff[tx_queue->skb_dirtytx]) | |
3032 | gfar_clean_tx_ring(tx_queue); | |
3033 | ||
3034 | napi_complete(napi); | |
3035 | ||
3036 | spin_lock_irq(&gfargrp->grplock); | |
3037 | imask = gfar_read(®s->imask); | |
3038 | imask |= IMASK_TX_DEFAULT; | |
3039 | gfar_write(®s->imask, imask); | |
3040 | spin_unlock_irq(&gfargrp->grplock); | |
3041 | ||
3042 | return 0; | |
3043 | } | |
3044 | ||
3045 | static int gfar_poll_rx(struct napi_struct *napi, int budget) | |
3046 | { | |
3047 | struct gfar_priv_grp *gfargrp = | |
3048 | container_of(napi, struct gfar_priv_grp, napi_rx); | |
fba4ed03 | 3049 | struct gfar_private *priv = gfargrp->priv; |
46ceb60c | 3050 | struct gfar __iomem *regs = gfargrp->regs; |
fba4ed03 | 3051 | struct gfar_priv_rx_q *rx_queue = NULL; |
c233cf40 | 3052 | int work_done = 0, work_done_per_q = 0; |
39c0a0d5 | 3053 | int i, budget_per_q = 0; |
6be5ed3f CM |
3054 | unsigned long rstat_rxf; |
3055 | int num_act_queues; | |
fba4ed03 | 3056 | |
8c7396ae | 3057 | /* Clear IEVENT, so interrupts aren't called again |
0977f817 JC |
3058 | * because of the packets that have already arrived |
3059 | */ | |
aeb12c5e | 3060 | gfar_write(®s->ievent, IEVENT_RX_MASK); |
8c7396ae | 3061 | |
6be5ed3f CM |
3062 | rstat_rxf = gfar_read(®s->rstat) & RSTAT_RXF_MASK; |
3063 | ||
3064 | num_act_queues = bitmap_weight(&rstat_rxf, MAX_RX_QS); | |
3065 | if (num_act_queues) | |
3066 | budget_per_q = budget/num_act_queues; | |
3067 | ||
3ba405db CM |
3068 | for_each_set_bit(i, &gfargrp->rx_bit_map, priv->num_rx_queues) { |
3069 | /* skip queue if not active */ | |
3070 | if (!(rstat_rxf & (RSTAT_CLEAR_RXF0 >> i))) | |
3071 | continue; | |
1da177e4 | 3072 | |
3ba405db CM |
3073 | rx_queue = priv->rx_queue[i]; |
3074 | work_done_per_q = | |
3075 | gfar_clean_rx_ring(rx_queue, budget_per_q); | |
3076 | work_done += work_done_per_q; | |
3077 | ||
3078 | /* finished processing this queue */ | |
3079 | if (work_done_per_q < budget_per_q) { | |
3080 | /* clear active queue hw indication */ | |
3081 | gfar_write(®s->rstat, | |
3082 | RSTAT_CLEAR_RXF0 >> i); | |
3083 | num_act_queues--; | |
3084 | ||
3085 | if (!num_act_queues) | |
3086 | break; | |
3087 | } | |
3088 | } | |
42199884 | 3089 | |
aeb12c5e CM |
3090 | if (!num_act_queues) { |
3091 | u32 imask; | |
3ba405db | 3092 | napi_complete(napi); |
1da177e4 | 3093 | |
3ba405db CM |
3094 | /* Clear the halt bit in RSTAT */ |
3095 | gfar_write(®s->rstat, gfargrp->rstat); | |
1da177e4 | 3096 | |
aeb12c5e CM |
3097 | spin_lock_irq(&gfargrp->grplock); |
3098 | imask = gfar_read(®s->imask); | |
3099 | imask |= IMASK_RX_DEFAULT; | |
3100 | gfar_write(®s->imask, imask); | |
3101 | spin_unlock_irq(&gfargrp->grplock); | |
1da177e4 LT |
3102 | } |
3103 | ||
c233cf40 | 3104 | return work_done; |
1da177e4 | 3105 | } |
1da177e4 | 3106 | |
aeb12c5e CM |
3107 | static int gfar_poll_tx(struct napi_struct *napi, int budget) |
3108 | { | |
3109 | struct gfar_priv_grp *gfargrp = | |
3110 | container_of(napi, struct gfar_priv_grp, napi_tx); | |
3111 | struct gfar_private *priv = gfargrp->priv; | |
3112 | struct gfar __iomem *regs = gfargrp->regs; | |
3113 | struct gfar_priv_tx_q *tx_queue = NULL; | |
3114 | int has_tx_work = 0; | |
3115 | int i; | |
3116 | ||
3117 | /* Clear IEVENT, so interrupts aren't called again | |
3118 | * because of the packets that have already arrived | |
3119 | */ | |
3120 | gfar_write(®s->ievent, IEVENT_TX_MASK); | |
3121 | ||
3122 | for_each_set_bit(i, &gfargrp->tx_bit_map, priv->num_tx_queues) { | |
3123 | tx_queue = priv->tx_queue[i]; | |
3124 | /* run Tx cleanup to completion */ | |
3125 | if (tx_queue->tx_skbuff[tx_queue->skb_dirtytx]) { | |
3126 | gfar_clean_tx_ring(tx_queue); | |
3127 | has_tx_work = 1; | |
3128 | } | |
3129 | } | |
3130 | ||
3131 | if (!has_tx_work) { | |
3132 | u32 imask; | |
3133 | napi_complete(napi); | |
3134 | ||
3135 | spin_lock_irq(&gfargrp->grplock); | |
3136 | imask = gfar_read(®s->imask); | |
3137 | imask |= IMASK_TX_DEFAULT; | |
3138 | gfar_write(®s->imask, imask); | |
3139 | spin_unlock_irq(&gfargrp->grplock); | |
3140 | } | |
3141 | ||
3142 | return 0; | |
3143 | } | |
3144 | ||
3145 | ||
f2d71c2d | 3146 | #ifdef CONFIG_NET_POLL_CONTROLLER |
0977f817 | 3147 | /* Polling 'interrupt' - used by things like netconsole to send skbs |
f2d71c2d VW |
3148 | * without having to re-enable interrupts. It's not called while |
3149 | * the interrupt routine is executing. | |
3150 | */ | |
3151 | static void gfar_netpoll(struct net_device *dev) | |
3152 | { | |
3153 | struct gfar_private *priv = netdev_priv(dev); | |
3a2e16c8 | 3154 | int i; |
f2d71c2d VW |
3155 | |
3156 | /* If the device has multiple interrupts, run tx/rx */ | |
b31a1d8b | 3157 | if (priv->device_flags & FSL_GIANFAR_DEV_HAS_MULTI_INTR) { |
46ceb60c | 3158 | for (i = 0; i < priv->num_grps; i++) { |
62ed839d PG |
3159 | struct gfar_priv_grp *grp = &priv->gfargrp[i]; |
3160 | ||
3161 | disable_irq(gfar_irq(grp, TX)->irq); | |
3162 | disable_irq(gfar_irq(grp, RX)->irq); | |
3163 | disable_irq(gfar_irq(grp, ER)->irq); | |
3164 | gfar_interrupt(gfar_irq(grp, TX)->irq, grp); | |
3165 | enable_irq(gfar_irq(grp, ER)->irq); | |
3166 | enable_irq(gfar_irq(grp, RX)->irq); | |
3167 | enable_irq(gfar_irq(grp, TX)->irq); | |
46ceb60c | 3168 | } |
f2d71c2d | 3169 | } else { |
46ceb60c | 3170 | for (i = 0; i < priv->num_grps; i++) { |
62ed839d PG |
3171 | struct gfar_priv_grp *grp = &priv->gfargrp[i]; |
3172 | ||
3173 | disable_irq(gfar_irq(grp, TX)->irq); | |
3174 | gfar_interrupt(gfar_irq(grp, TX)->irq, grp); | |
3175 | enable_irq(gfar_irq(grp, TX)->irq); | |
43de004b | 3176 | } |
f2d71c2d VW |
3177 | } |
3178 | } | |
3179 | #endif | |
3180 | ||
1da177e4 | 3181 | /* The interrupt handler for devices with one interrupt */ |
f4983704 | 3182 | static irqreturn_t gfar_interrupt(int irq, void *grp_id) |
1da177e4 | 3183 | { |
f4983704 | 3184 | struct gfar_priv_grp *gfargrp = grp_id; |
1da177e4 LT |
3185 | |
3186 | /* Save ievent for future reference */ | |
f4983704 | 3187 | u32 events = gfar_read(&gfargrp->regs->ievent); |
1da177e4 | 3188 | |
1da177e4 | 3189 | /* Check for reception */ |
538cc7ee | 3190 | if (events & IEVENT_RX_MASK) |
f4983704 | 3191 | gfar_receive(irq, grp_id); |
1da177e4 LT |
3192 | |
3193 | /* Check for transmit completion */ | |
538cc7ee | 3194 | if (events & IEVENT_TX_MASK) |
f4983704 | 3195 | gfar_transmit(irq, grp_id); |
1da177e4 | 3196 | |
538cc7ee SS |
3197 | /* Check for errors */ |
3198 | if (events & IEVENT_ERR_MASK) | |
f4983704 | 3199 | gfar_error(irq, grp_id); |
1da177e4 LT |
3200 | |
3201 | return IRQ_HANDLED; | |
3202 | } | |
3203 | ||
1da177e4 LT |
3204 | /* Called every time the controller might need to be made |
3205 | * aware of new link state. The PHY code conveys this | |
bb40dcbb | 3206 | * information through variables in the phydev structure, and this |
1da177e4 LT |
3207 | * function converts those variables into the appropriate |
3208 | * register values, and can bring down the device if needed. | |
3209 | */ | |
3210 | static void adjust_link(struct net_device *dev) | |
3211 | { | |
3212 | struct gfar_private *priv = netdev_priv(dev); | |
bb40dcbb | 3213 | struct phy_device *phydev = priv->phydev; |
bb40dcbb | 3214 | |
6ce29b0e | 3215 | if (unlikely(phydev->link != priv->oldlink || |
0ae93b2c GR |
3216 | (phydev->link && (phydev->duplex != priv->oldduplex || |
3217 | phydev->speed != priv->oldspeed)))) | |
6ce29b0e | 3218 | gfar_update_link_state(priv); |
bb40dcbb | 3219 | } |
1da177e4 LT |
3220 | |
3221 | /* Update the hash table based on the current list of multicast | |
3222 | * addresses we subscribe to. Also, change the promiscuity of | |
3223 | * the device based on the flags (this function is called | |
0977f817 JC |
3224 | * whenever dev->flags is changed |
3225 | */ | |
1da177e4 LT |
3226 | static void gfar_set_multi(struct net_device *dev) |
3227 | { | |
22bedad3 | 3228 | struct netdev_hw_addr *ha; |
1da177e4 | 3229 | struct gfar_private *priv = netdev_priv(dev); |
46ceb60c | 3230 | struct gfar __iomem *regs = priv->gfargrp[0].regs; |
1da177e4 LT |
3231 | u32 tempval; |
3232 | ||
a12f801d | 3233 | if (dev->flags & IFF_PROMISC) { |
1da177e4 LT |
3234 | /* Set RCTRL to PROM */ |
3235 | tempval = gfar_read(®s->rctrl); | |
3236 | tempval |= RCTRL_PROM; | |
3237 | gfar_write(®s->rctrl, tempval); | |
3238 | } else { | |
3239 | /* Set RCTRL to not PROM */ | |
3240 | tempval = gfar_read(®s->rctrl); | |
3241 | tempval &= ~(RCTRL_PROM); | |
3242 | gfar_write(®s->rctrl, tempval); | |
3243 | } | |
6aa20a22 | 3244 | |
a12f801d | 3245 | if (dev->flags & IFF_ALLMULTI) { |
1da177e4 | 3246 | /* Set the hash to rx all multicast frames */ |
0bbaf069 KG |
3247 | gfar_write(®s->igaddr0, 0xffffffff); |
3248 | gfar_write(®s->igaddr1, 0xffffffff); | |
3249 | gfar_write(®s->igaddr2, 0xffffffff); | |
3250 | gfar_write(®s->igaddr3, 0xffffffff); | |
3251 | gfar_write(®s->igaddr4, 0xffffffff); | |
3252 | gfar_write(®s->igaddr5, 0xffffffff); | |
3253 | gfar_write(®s->igaddr6, 0xffffffff); | |
3254 | gfar_write(®s->igaddr7, 0xffffffff); | |
1da177e4 LT |
3255 | gfar_write(®s->gaddr0, 0xffffffff); |
3256 | gfar_write(®s->gaddr1, 0xffffffff); | |
3257 | gfar_write(®s->gaddr2, 0xffffffff); | |
3258 | gfar_write(®s->gaddr3, 0xffffffff); | |
3259 | gfar_write(®s->gaddr4, 0xffffffff); | |
3260 | gfar_write(®s->gaddr5, 0xffffffff); | |
3261 | gfar_write(®s->gaddr6, 0xffffffff); | |
3262 | gfar_write(®s->gaddr7, 0xffffffff); | |
3263 | } else { | |
7f7f5316 AF |
3264 | int em_num; |
3265 | int idx; | |
3266 | ||
1da177e4 | 3267 | /* zero out the hash */ |
0bbaf069 KG |
3268 | gfar_write(®s->igaddr0, 0x0); |
3269 | gfar_write(®s->igaddr1, 0x0); | |
3270 | gfar_write(®s->igaddr2, 0x0); | |
3271 | gfar_write(®s->igaddr3, 0x0); | |
3272 | gfar_write(®s->igaddr4, 0x0); | |
3273 | gfar_write(®s->igaddr5, 0x0); | |
3274 | gfar_write(®s->igaddr6, 0x0); | |
3275 | gfar_write(®s->igaddr7, 0x0); | |
1da177e4 LT |
3276 | gfar_write(®s->gaddr0, 0x0); |
3277 | gfar_write(®s->gaddr1, 0x0); | |
3278 | gfar_write(®s->gaddr2, 0x0); | |
3279 | gfar_write(®s->gaddr3, 0x0); | |
3280 | gfar_write(®s->gaddr4, 0x0); | |
3281 | gfar_write(®s->gaddr5, 0x0); | |
3282 | gfar_write(®s->gaddr6, 0x0); | |
3283 | gfar_write(®s->gaddr7, 0x0); | |
3284 | ||
7f7f5316 AF |
3285 | /* If we have extended hash tables, we need to |
3286 | * clear the exact match registers to prepare for | |
0977f817 JC |
3287 | * setting them |
3288 | */ | |
7f7f5316 AF |
3289 | if (priv->extended_hash) { |
3290 | em_num = GFAR_EM_NUM + 1; | |
3291 | gfar_clear_exact_match(dev); | |
3292 | idx = 1; | |
3293 | } else { | |
3294 | idx = 0; | |
3295 | em_num = 0; | |
3296 | } | |
3297 | ||
4cd24eaf | 3298 | if (netdev_mc_empty(dev)) |
1da177e4 LT |
3299 | return; |
3300 | ||
3301 | /* Parse the list, and set the appropriate bits */ | |
22bedad3 | 3302 | netdev_for_each_mc_addr(ha, dev) { |
7f7f5316 | 3303 | if (idx < em_num) { |
22bedad3 | 3304 | gfar_set_mac_for_addr(dev, idx, ha->addr); |
7f7f5316 AF |
3305 | idx++; |
3306 | } else | |
22bedad3 | 3307 | gfar_set_hash_for_addr(dev, ha->addr); |
1da177e4 LT |
3308 | } |
3309 | } | |
1da177e4 LT |
3310 | } |
3311 | ||
7f7f5316 AF |
3312 | |
3313 | /* Clears each of the exact match registers to zero, so they | |
0977f817 JC |
3314 | * don't interfere with normal reception |
3315 | */ | |
7f7f5316 AF |
3316 | static void gfar_clear_exact_match(struct net_device *dev) |
3317 | { | |
3318 | int idx; | |
6a3c910c | 3319 | static const u8 zero_arr[ETH_ALEN] = {0, 0, 0, 0, 0, 0}; |
7f7f5316 | 3320 | |
bc4598bc | 3321 | for (idx = 1; idx < GFAR_EM_NUM + 1; idx++) |
b6bc7650 | 3322 | gfar_set_mac_for_addr(dev, idx, zero_arr); |
7f7f5316 AF |
3323 | } |
3324 | ||
1da177e4 LT |
3325 | /* Set the appropriate hash bit for the given addr */ |
3326 | /* The algorithm works like so: | |
3327 | * 1) Take the Destination Address (ie the multicast address), and | |
3328 | * do a CRC on it (little endian), and reverse the bits of the | |
3329 | * result. | |
3330 | * 2) Use the 8 most significant bits as a hash into a 256-entry | |
3331 | * table. The table is controlled through 8 32-bit registers: | |
3332 | * gaddr0-7. gaddr0's MSB is entry 0, and gaddr7's LSB is | |
3333 | * gaddr7. This means that the 3 most significant bits in the | |
3334 | * hash index which gaddr register to use, and the 5 other bits | |
3335 | * indicate which bit (assuming an IBM numbering scheme, which | |
3336 | * for PowerPC (tm) is usually the case) in the register holds | |
0977f817 JC |
3337 | * the entry. |
3338 | */ | |
1da177e4 LT |
3339 | static void gfar_set_hash_for_addr(struct net_device *dev, u8 *addr) |
3340 | { | |
3341 | u32 tempval; | |
3342 | struct gfar_private *priv = netdev_priv(dev); | |
6a3c910c | 3343 | u32 result = ether_crc(ETH_ALEN, addr); |
0bbaf069 KG |
3344 | int width = priv->hash_width; |
3345 | u8 whichbit = (result >> (32 - width)) & 0x1f; | |
3346 | u8 whichreg = result >> (32 - width + 5); | |
1da177e4 LT |
3347 | u32 value = (1 << (31-whichbit)); |
3348 | ||
0bbaf069 | 3349 | tempval = gfar_read(priv->hash_regs[whichreg]); |
1da177e4 | 3350 | tempval |= value; |
0bbaf069 | 3351 | gfar_write(priv->hash_regs[whichreg], tempval); |
1da177e4 LT |
3352 | } |
3353 | ||
7f7f5316 AF |
3354 | |
3355 | /* There are multiple MAC Address register pairs on some controllers | |
3356 | * This function sets the numth pair to a given address | |
3357 | */ | |
b6bc7650 JP |
3358 | static void gfar_set_mac_for_addr(struct net_device *dev, int num, |
3359 | const u8 *addr) | |
7f7f5316 AF |
3360 | { |
3361 | struct gfar_private *priv = netdev_priv(dev); | |
46ceb60c | 3362 | struct gfar __iomem *regs = priv->gfargrp[0].regs; |
7f7f5316 | 3363 | u32 tempval; |
f4983704 | 3364 | u32 __iomem *macptr = ®s->macstnaddr1; |
7f7f5316 AF |
3365 | |
3366 | macptr += num*2; | |
3367 | ||
83bfc3c4 CM |
3368 | /* For a station address of 0x12345678ABCD in transmission |
3369 | * order (BE), MACnADDR1 is set to 0xCDAB7856 and | |
3370 | * MACnADDR2 is set to 0x34120000. | |
0977f817 | 3371 | */ |
83bfc3c4 CM |
3372 | tempval = (addr[5] << 24) | (addr[4] << 16) | |
3373 | (addr[3] << 8) | addr[2]; | |
7f7f5316 | 3374 | |
83bfc3c4 | 3375 | gfar_write(macptr, tempval); |
7f7f5316 | 3376 | |
83bfc3c4 | 3377 | tempval = (addr[1] << 24) | (addr[0] << 16); |
7f7f5316 AF |
3378 | |
3379 | gfar_write(macptr+1, tempval); | |
3380 | } | |
3381 | ||
1da177e4 | 3382 | /* GFAR error interrupt handler */ |
f4983704 | 3383 | static irqreturn_t gfar_error(int irq, void *grp_id) |
1da177e4 | 3384 | { |
f4983704 SG |
3385 | struct gfar_priv_grp *gfargrp = grp_id; |
3386 | struct gfar __iomem *regs = gfargrp->regs; | |
3387 | struct gfar_private *priv= gfargrp->priv; | |
3388 | struct net_device *dev = priv->ndev; | |
1da177e4 LT |
3389 | |
3390 | /* Save ievent for future reference */ | |
f4983704 | 3391 | u32 events = gfar_read(®s->ievent); |
1da177e4 LT |
3392 | |
3393 | /* Clear IEVENT */ | |
f4983704 | 3394 | gfar_write(®s->ievent, events & IEVENT_ERR_MASK); |
d87eb127 SW |
3395 | |
3396 | /* Magic Packet is not an error. */ | |
b31a1d8b | 3397 | if ((priv->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET) && |
d87eb127 SW |
3398 | (events & IEVENT_MAG)) |
3399 | events &= ~IEVENT_MAG; | |
1da177e4 LT |
3400 | |
3401 | /* Hmm... */ | |
0bbaf069 | 3402 | if (netif_msg_rx_err(priv) || netif_msg_tx_err(priv)) |
bc4598bc JC |
3403 | netdev_dbg(dev, |
3404 | "error interrupt (ievent=0x%08x imask=0x%08x)\n", | |
59deab26 | 3405 | events, gfar_read(®s->imask)); |
1da177e4 LT |
3406 | |
3407 | /* Update the error counters */ | |
3408 | if (events & IEVENT_TXE) { | |
09f75cd7 | 3409 | dev->stats.tx_errors++; |
1da177e4 LT |
3410 | |
3411 | if (events & IEVENT_LC) | |
09f75cd7 | 3412 | dev->stats.tx_window_errors++; |
1da177e4 | 3413 | if (events & IEVENT_CRL) |
09f75cd7 | 3414 | dev->stats.tx_aborted_errors++; |
1da177e4 | 3415 | if (events & IEVENT_XFUN) { |
59deab26 JP |
3416 | netif_dbg(priv, tx_err, dev, |
3417 | "TX FIFO underrun, packet dropped\n"); | |
09f75cd7 | 3418 | dev->stats.tx_dropped++; |
212079df | 3419 | atomic64_inc(&priv->extra_stats.tx_underrun); |
1da177e4 | 3420 | |
bc602280 | 3421 | schedule_work(&priv->reset_task); |
1da177e4 | 3422 | } |
59deab26 | 3423 | netif_dbg(priv, tx_err, dev, "Transmit Error\n"); |
1da177e4 LT |
3424 | } |
3425 | if (events & IEVENT_BSY) { | |
09f75cd7 | 3426 | dev->stats.rx_errors++; |
212079df | 3427 | atomic64_inc(&priv->extra_stats.rx_bsy); |
1da177e4 | 3428 | |
f4983704 | 3429 | gfar_receive(irq, grp_id); |
1da177e4 | 3430 | |
59deab26 JP |
3431 | netif_dbg(priv, rx_err, dev, "busy error (rstat: %x)\n", |
3432 | gfar_read(®s->rstat)); | |
1da177e4 LT |
3433 | } |
3434 | if (events & IEVENT_BABR) { | |
09f75cd7 | 3435 | dev->stats.rx_errors++; |
212079df | 3436 | atomic64_inc(&priv->extra_stats.rx_babr); |
1da177e4 | 3437 | |
59deab26 | 3438 | netif_dbg(priv, rx_err, dev, "babbling RX error\n"); |
1da177e4 LT |
3439 | } |
3440 | if (events & IEVENT_EBERR) { | |
212079df | 3441 | atomic64_inc(&priv->extra_stats.eberr); |
59deab26 | 3442 | netif_dbg(priv, rx_err, dev, "bus error\n"); |
1da177e4 | 3443 | } |
59deab26 JP |
3444 | if (events & IEVENT_RXC) |
3445 | netif_dbg(priv, rx_status, dev, "control frame\n"); | |
1da177e4 LT |
3446 | |
3447 | if (events & IEVENT_BABT) { | |
212079df | 3448 | atomic64_inc(&priv->extra_stats.tx_babt); |
59deab26 | 3449 | netif_dbg(priv, tx_err, dev, "babbling TX error\n"); |
1da177e4 LT |
3450 | } |
3451 | return IRQ_HANDLED; | |
3452 | } | |
3453 | ||
6ce29b0e CM |
3454 | static u32 gfar_get_flowctrl_cfg(struct gfar_private *priv) |
3455 | { | |
3456 | struct phy_device *phydev = priv->phydev; | |
3457 | u32 val = 0; | |
3458 | ||
3459 | if (!phydev->duplex) | |
3460 | return val; | |
3461 | ||
3462 | if (!priv->pause_aneg_en) { | |
3463 | if (priv->tx_pause_en) | |
3464 | val |= MACCFG1_TX_FLOW; | |
3465 | if (priv->rx_pause_en) | |
3466 | val |= MACCFG1_RX_FLOW; | |
3467 | } else { | |
3468 | u16 lcl_adv, rmt_adv; | |
3469 | u8 flowctrl; | |
3470 | /* get link partner capabilities */ | |
3471 | rmt_adv = 0; | |
3472 | if (phydev->pause) | |
3473 | rmt_adv = LPA_PAUSE_CAP; | |
3474 | if (phydev->asym_pause) | |
3475 | rmt_adv |= LPA_PAUSE_ASYM; | |
3476 | ||
43ef8d29 PMB |
3477 | lcl_adv = 0; |
3478 | if (phydev->advertising & ADVERTISED_Pause) | |
3479 | lcl_adv |= ADVERTISE_PAUSE_CAP; | |
3480 | if (phydev->advertising & ADVERTISED_Asym_Pause) | |
3481 | lcl_adv |= ADVERTISE_PAUSE_ASYM; | |
6ce29b0e CM |
3482 | |
3483 | flowctrl = mii_resolve_flowctrl_fdx(lcl_adv, rmt_adv); | |
3484 | if (flowctrl & FLOW_CTRL_TX) | |
3485 | val |= MACCFG1_TX_FLOW; | |
3486 | if (flowctrl & FLOW_CTRL_RX) | |
3487 | val |= MACCFG1_RX_FLOW; | |
3488 | } | |
3489 | ||
3490 | return val; | |
3491 | } | |
3492 | ||
3493 | static noinline void gfar_update_link_state(struct gfar_private *priv) | |
3494 | { | |
3495 | struct gfar __iomem *regs = priv->gfargrp[0].regs; | |
3496 | struct phy_device *phydev = priv->phydev; | |
45b679c9 MP |
3497 | struct gfar_priv_rx_q *rx_queue = NULL; |
3498 | int i; | |
3499 | struct rxbd8 *bdp; | |
6ce29b0e CM |
3500 | |
3501 | if (unlikely(test_bit(GFAR_RESETTING, &priv->state))) | |
3502 | return; | |
3503 | ||
3504 | if (phydev->link) { | |
3505 | u32 tempval1 = gfar_read(®s->maccfg1); | |
3506 | u32 tempval = gfar_read(®s->maccfg2); | |
3507 | u32 ecntrl = gfar_read(®s->ecntrl); | |
45b679c9 | 3508 | u32 tx_flow_oldval = (tempval & MACCFG1_TX_FLOW); |
6ce29b0e CM |
3509 | |
3510 | if (phydev->duplex != priv->oldduplex) { | |
3511 | if (!(phydev->duplex)) | |
3512 | tempval &= ~(MACCFG2_FULL_DUPLEX); | |
3513 | else | |
3514 | tempval |= MACCFG2_FULL_DUPLEX; | |
3515 | ||
3516 | priv->oldduplex = phydev->duplex; | |
3517 | } | |
3518 | ||
3519 | if (phydev->speed != priv->oldspeed) { | |
3520 | switch (phydev->speed) { | |
3521 | case 1000: | |
3522 | tempval = | |
3523 | ((tempval & ~(MACCFG2_IF)) | MACCFG2_GMII); | |
3524 | ||
3525 | ecntrl &= ~(ECNTRL_R100); | |
3526 | break; | |
3527 | case 100: | |
3528 | case 10: | |
3529 | tempval = | |
3530 | ((tempval & ~(MACCFG2_IF)) | MACCFG2_MII); | |
3531 | ||
3532 | /* Reduced mode distinguishes | |
3533 | * between 10 and 100 | |
3534 | */ | |
3535 | if (phydev->speed == SPEED_100) | |
3536 | ecntrl |= ECNTRL_R100; | |
3537 | else | |
3538 | ecntrl &= ~(ECNTRL_R100); | |
3539 | break; | |
3540 | default: | |
3541 | netif_warn(priv, link, priv->ndev, | |
3542 | "Ack! Speed (%d) is not 10/100/1000!\n", | |
3543 | phydev->speed); | |
3544 | break; | |
3545 | } | |
3546 | ||
3547 | priv->oldspeed = phydev->speed; | |
3548 | } | |
3549 | ||
3550 | tempval1 &= ~(MACCFG1_TX_FLOW | MACCFG1_RX_FLOW); | |
3551 | tempval1 |= gfar_get_flowctrl_cfg(priv); | |
3552 | ||
45b679c9 MP |
3553 | /* Turn last free buffer recording on */ |
3554 | if ((tempval1 & MACCFG1_TX_FLOW) && !tx_flow_oldval) { | |
3555 | for (i = 0; i < priv->num_rx_queues; i++) { | |
3556 | rx_queue = priv->rx_queue[i]; | |
3557 | bdp = rx_queue->cur_rx; | |
3558 | /* skip to previous bd */ | |
3559 | bdp = skip_bd(bdp, rx_queue->rx_ring_size - 1, | |
3560 | rx_queue->rx_bd_base, | |
3561 | rx_queue->rx_ring_size); | |
3562 | ||
3563 | if (rx_queue->rfbptr) | |
3564 | gfar_write(rx_queue->rfbptr, (u32)bdp); | |
3565 | } | |
3566 | ||
3567 | priv->tx_actual_en = 1; | |
3568 | } | |
3569 | ||
3570 | if (unlikely(!(tempval1 & MACCFG1_TX_FLOW) && tx_flow_oldval)) | |
3571 | priv->tx_actual_en = 0; | |
3572 | ||
6ce29b0e CM |
3573 | gfar_write(®s->maccfg1, tempval1); |
3574 | gfar_write(®s->maccfg2, tempval); | |
3575 | gfar_write(®s->ecntrl, ecntrl); | |
3576 | ||
3577 | if (!priv->oldlink) | |
3578 | priv->oldlink = 1; | |
3579 | ||
3580 | } else if (priv->oldlink) { | |
3581 | priv->oldlink = 0; | |
3582 | priv->oldspeed = 0; | |
3583 | priv->oldduplex = -1; | |
3584 | } | |
3585 | ||
3586 | if (netif_msg_link(priv)) | |
3587 | phy_print_status(phydev); | |
3588 | } | |
3589 | ||
94e5a2a8 | 3590 | static const struct of_device_id gfar_match[] = |
b31a1d8b AF |
3591 | { |
3592 | { | |
3593 | .type = "network", | |
3594 | .compatible = "gianfar", | |
3595 | }, | |
46ceb60c SG |
3596 | { |
3597 | .compatible = "fsl,etsec2", | |
3598 | }, | |
b31a1d8b AF |
3599 | {}, |
3600 | }; | |
e72701ac | 3601 | MODULE_DEVICE_TABLE(of, gfar_match); |
b31a1d8b | 3602 | |
1da177e4 | 3603 | /* Structure for a device driver */ |
74888760 | 3604 | static struct platform_driver gfar_driver = { |
4018294b GL |
3605 | .driver = { |
3606 | .name = "fsl-gianfar", | |
4018294b GL |
3607 | .pm = GFAR_PM_OPS, |
3608 | .of_match_table = gfar_match, | |
3609 | }, | |
1da177e4 LT |
3610 | .probe = gfar_probe, |
3611 | .remove = gfar_remove, | |
3612 | }; | |
3613 | ||
db62f684 | 3614 | module_platform_driver(gfar_driver); |