Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1 | /* |
Mike Frysinger | 2fb9d6f | 2008-01-30 16:52:24 +0800 | [diff] [blame] | 2 | * Blackfin On-Chip MAC Driver |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 3 | * |
Sonic Zhang | 02460d0 | 2010-06-11 10:44:22 +0000 | [diff] [blame] | 4 | * Copyright 2004-2010 Analog Devices Inc. |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 5 | * |
Mike Frysinger | 2fb9d6f | 2008-01-30 16:52:24 +0800 | [diff] [blame] | 6 | * Enter bugs at http://blackfin.uclinux.org/ |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 7 | * |
Mike Frysinger | 2fb9d6f | 2008-01-30 16:52:24 +0800 | [diff] [blame] | 8 | * Licensed under the GPL-2 or later. |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 9 | */ |
| 10 | |
Mike Frysinger | c6dd509 | 2011-01-10 02:54:29 +0000 | [diff] [blame] | 11 | #define DRV_VERSION "1.1" |
| 12 | #define DRV_DESC "Blackfin on-chip Ethernet MAC driver" |
| 13 | |
| 14 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| 15 | |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 16 | #include <linux/init.h> |
| 17 | #include <linux/module.h> |
| 18 | #include <linux/kernel.h> |
| 19 | #include <linux/sched.h> |
| 20 | #include <linux/slab.h> |
| 21 | #include <linux/delay.h> |
| 22 | #include <linux/timer.h> |
| 23 | #include <linux/errno.h> |
| 24 | #include <linux/irq.h> |
| 25 | #include <linux/io.h> |
| 26 | #include <linux/ioport.h> |
| 27 | #include <linux/crc32.h> |
| 28 | #include <linux/device.h> |
| 29 | #include <linux/spinlock.h> |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 30 | #include <linux/mii.h> |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 31 | #include <linux/netdevice.h> |
| 32 | #include <linux/etherdevice.h> |
Bryan Wu | 679dce3 | 2008-04-25 11:53:11 +0800 | [diff] [blame] | 33 | #include <linux/ethtool.h> |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 34 | #include <linux/skbuff.h> |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 35 | #include <linux/platform_device.h> |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 36 | |
| 37 | #include <asm/dma.h> |
| 38 | #include <linux/dma-mapping.h> |
| 39 | |
Barry Song | fe92afe | 2010-05-17 17:19:40 -0700 | [diff] [blame] | 40 | #include <asm/div64.h> |
Mike Frysinger | 98f672c | 2010-01-18 21:14:12 +0000 | [diff] [blame] | 41 | #include <asm/dpmc.h> |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 42 | #include <asm/blackfin.h> |
| 43 | #include <asm/cacheflush.h> |
| 44 | #include <asm/portmux.h> |
David Howells | 3dcc1e7 | 2010-10-07 14:08:49 +0100 | [diff] [blame] | 45 | #include <mach/pll.h> |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 46 | |
| 47 | #include "bfin_mac.h" |
| 48 | |
Mike Frysinger | c6dd509 | 2011-01-10 02:54:29 +0000 | [diff] [blame] | 49 | MODULE_AUTHOR("Bryan Wu, Luke Yang"); |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 50 | MODULE_LICENSE("GPL"); |
| 51 | MODULE_DESCRIPTION(DRV_DESC); |
Kay Sievers | 72abb46 | 2008-04-18 13:50:44 -0700 | [diff] [blame] | 52 | MODULE_ALIAS("platform:bfin_mac"); |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 53 | |
| 54 | #if defined(CONFIG_BFIN_MAC_USE_L1) |
Sonic Zhang | 118133e | 2011-06-16 12:31:58 +0000 | [diff] [blame] | 55 | # define bfin_mac_alloc(dma_handle, size, num) l1_data_sram_zalloc(size*num) |
| 56 | # define bfin_mac_free(dma_handle, ptr, num) l1_data_sram_free(ptr) |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 57 | #else |
Sonic Zhang | 118133e | 2011-06-16 12:31:58 +0000 | [diff] [blame] | 58 | # define bfin_mac_alloc(dma_handle, size, num) \ |
| 59 | dma_alloc_coherent(NULL, size*num, dma_handle, GFP_KERNEL) |
| 60 | # define bfin_mac_free(dma_handle, ptr, num) \ |
| 61 | dma_free_coherent(NULL, sizeof(*ptr)*num, ptr, dma_handle) |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 62 | #endif |
| 63 | |
| 64 | #define PKT_BUF_SZ 1580 |
| 65 | |
| 66 | #define MAX_TIMEOUT_CNT 500 |
| 67 | |
| 68 | /* pointers to maintain transmit list */ |
| 69 | static struct net_dma_desc_tx *tx_list_head; |
| 70 | static struct net_dma_desc_tx *tx_list_tail; |
| 71 | static struct net_dma_desc_rx *rx_list_head; |
| 72 | static struct net_dma_desc_rx *rx_list_tail; |
| 73 | static struct net_dma_desc_rx *current_rx_ptr; |
| 74 | static struct net_dma_desc_tx *current_tx_ptr; |
| 75 | static struct net_dma_desc_tx *tx_desc; |
| 76 | static struct net_dma_desc_rx *rx_desc; |
| 77 | |
| 78 | static void desc_list_free(void) |
| 79 | { |
| 80 | struct net_dma_desc_rx *r; |
| 81 | struct net_dma_desc_tx *t; |
| 82 | int i; |
| 83 | #if !defined(CONFIG_BFIN_MAC_USE_L1) |
| 84 | dma_addr_t dma_handle = 0; |
| 85 | #endif |
| 86 | |
| 87 | if (tx_desc) { |
| 88 | t = tx_list_head; |
| 89 | for (i = 0; i < CONFIG_BFIN_TX_DESC_NUM; i++) { |
| 90 | if (t) { |
| 91 | if (t->skb) { |
| 92 | dev_kfree_skb(t->skb); |
| 93 | t->skb = NULL; |
| 94 | } |
| 95 | t = t->next; |
| 96 | } |
| 97 | } |
Sonic Zhang | 118133e | 2011-06-16 12:31:58 +0000 | [diff] [blame] | 98 | bfin_mac_free(dma_handle, tx_desc, CONFIG_BFIN_TX_DESC_NUM); |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 99 | } |
| 100 | |
| 101 | if (rx_desc) { |
| 102 | r = rx_list_head; |
| 103 | for (i = 0; i < CONFIG_BFIN_RX_DESC_NUM; i++) { |
| 104 | if (r) { |
| 105 | if (r->skb) { |
| 106 | dev_kfree_skb(r->skb); |
| 107 | r->skb = NULL; |
| 108 | } |
| 109 | r = r->next; |
| 110 | } |
| 111 | } |
Sonic Zhang | 118133e | 2011-06-16 12:31:58 +0000 | [diff] [blame] | 112 | bfin_mac_free(dma_handle, rx_desc, CONFIG_BFIN_RX_DESC_NUM); |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 113 | } |
| 114 | } |
| 115 | |
Pradeep A. Dalvi | 1ab0d2e | 2012-02-06 11:16:48 +0000 | [diff] [blame] | 116 | static int desc_list_init(struct net_device *dev) |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 117 | { |
| 118 | int i; |
| 119 | struct sk_buff *new_skb; |
| 120 | #if !defined(CONFIG_BFIN_MAC_USE_L1) |
| 121 | /* |
| 122 | * This dma_handle is useless in Blackfin dma_alloc_coherent(). |
| 123 | * The real dma handler is the return value of dma_alloc_coherent(). |
| 124 | */ |
| 125 | dma_addr_t dma_handle; |
| 126 | #endif |
| 127 | |
| 128 | tx_desc = bfin_mac_alloc(&dma_handle, |
Sonic Zhang | 118133e | 2011-06-16 12:31:58 +0000 | [diff] [blame] | 129 | sizeof(struct net_dma_desc_tx), |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 130 | CONFIG_BFIN_TX_DESC_NUM); |
| 131 | if (tx_desc == NULL) |
| 132 | goto init_error; |
| 133 | |
| 134 | rx_desc = bfin_mac_alloc(&dma_handle, |
Sonic Zhang | 118133e | 2011-06-16 12:31:58 +0000 | [diff] [blame] | 135 | sizeof(struct net_dma_desc_rx), |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 136 | CONFIG_BFIN_RX_DESC_NUM); |
| 137 | if (rx_desc == NULL) |
| 138 | goto init_error; |
| 139 | |
| 140 | /* init tx_list */ |
| 141 | tx_list_head = tx_list_tail = tx_desc; |
| 142 | |
| 143 | for (i = 0; i < CONFIG_BFIN_TX_DESC_NUM; i++) { |
| 144 | struct net_dma_desc_tx *t = tx_desc + i; |
| 145 | struct dma_descriptor *a = &(t->desc_a); |
| 146 | struct dma_descriptor *b = &(t->desc_b); |
| 147 | |
| 148 | /* |
| 149 | * disable DMA |
| 150 | * read from memory WNR = 0 |
| 151 | * wordsize is 32 bits |
| 152 | * 6 half words is desc size |
| 153 | * large desc flow |
| 154 | */ |
| 155 | a->config = WDSIZE_32 | NDSIZE_6 | DMAFLOW_LARGE; |
| 156 | a->start_addr = (unsigned long)t->packet; |
| 157 | a->x_count = 0; |
| 158 | a->next_dma_desc = b; |
| 159 | |
| 160 | /* |
| 161 | * enabled DMA |
| 162 | * write to memory WNR = 1 |
| 163 | * wordsize is 32 bits |
| 164 | * disable interrupt |
| 165 | * 6 half words is desc size |
| 166 | * large desc flow |
| 167 | */ |
| 168 | b->config = DMAEN | WNR | WDSIZE_32 | NDSIZE_6 | DMAFLOW_LARGE; |
| 169 | b->start_addr = (unsigned long)(&(t->status)); |
| 170 | b->x_count = 0; |
| 171 | |
| 172 | t->skb = NULL; |
| 173 | tx_list_tail->desc_b.next_dma_desc = a; |
| 174 | tx_list_tail->next = t; |
| 175 | tx_list_tail = t; |
| 176 | } |
| 177 | tx_list_tail->next = tx_list_head; /* tx_list is a circle */ |
| 178 | tx_list_tail->desc_b.next_dma_desc = &(tx_list_head->desc_a); |
| 179 | current_tx_ptr = tx_list_head; |
| 180 | |
| 181 | /* init rx_list */ |
| 182 | rx_list_head = rx_list_tail = rx_desc; |
| 183 | |
| 184 | for (i = 0; i < CONFIG_BFIN_RX_DESC_NUM; i++) { |
| 185 | struct net_dma_desc_rx *r = rx_desc + i; |
| 186 | struct dma_descriptor *a = &(r->desc_a); |
| 187 | struct dma_descriptor *b = &(r->desc_b); |
| 188 | |
| 189 | /* allocate a new skb for next time receive */ |
Pradeep A. Dalvi | 1ab0d2e | 2012-02-06 11:16:48 +0000 | [diff] [blame] | 190 | new_skb = netdev_alloc_skb(dev, PKT_BUF_SZ + NET_IP_ALIGN); |
Joe Perches | 720a43e | 2013-03-08 15:03:25 +0000 | [diff] [blame] | 191 | if (!new_skb) |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 192 | goto init_error; |
Joe Perches | 720a43e | 2013-03-08 15:03:25 +0000 | [diff] [blame] | 193 | |
Michael Hennerich | 015dac8 | 2009-05-29 03:41:15 +0000 | [diff] [blame] | 194 | skb_reserve(new_skb, NET_IP_ALIGN); |
Sonic Zhang | f6e1e4f | 2010-05-10 05:39:08 +0000 | [diff] [blame] | 195 | /* Invidate the data cache of skb->data range when it is write back |
| 196 | * cache. It will prevent overwritting the new data from DMA |
| 197 | */ |
| 198 | blackfin_dcache_invalidate_range((unsigned long)new_skb->head, |
| 199 | (unsigned long)new_skb->end); |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 200 | r->skb = new_skb; |
| 201 | |
| 202 | /* |
| 203 | * enabled DMA |
| 204 | * write to memory WNR = 1 |
| 205 | * wordsize is 32 bits |
| 206 | * disable interrupt |
| 207 | * 6 half words is desc size |
| 208 | * large desc flow |
| 209 | */ |
| 210 | a->config = DMAEN | WNR | WDSIZE_32 | NDSIZE_6 | DMAFLOW_LARGE; |
| 211 | /* since RXDWA is enabled */ |
| 212 | a->start_addr = (unsigned long)new_skb->data - 2; |
| 213 | a->x_count = 0; |
| 214 | a->next_dma_desc = b; |
| 215 | |
| 216 | /* |
| 217 | * enabled DMA |
| 218 | * write to memory WNR = 1 |
| 219 | * wordsize is 32 bits |
| 220 | * enable interrupt |
| 221 | * 6 half words is desc size |
| 222 | * large desc flow |
| 223 | */ |
| 224 | b->config = DMAEN | WNR | WDSIZE_32 | DI_EN | |
| 225 | NDSIZE_6 | DMAFLOW_LARGE; |
| 226 | b->start_addr = (unsigned long)(&(r->status)); |
| 227 | b->x_count = 0; |
| 228 | |
| 229 | rx_list_tail->desc_b.next_dma_desc = a; |
| 230 | rx_list_tail->next = r; |
| 231 | rx_list_tail = r; |
| 232 | } |
| 233 | rx_list_tail->next = rx_list_head; /* rx_list is a circle */ |
| 234 | rx_list_tail->desc_b.next_dma_desc = &(rx_list_head->desc_a); |
| 235 | current_rx_ptr = rx_list_head; |
| 236 | |
| 237 | return 0; |
| 238 | |
| 239 | init_error: |
| 240 | desc_list_free(); |
Mike Frysinger | c6dd509 | 2011-01-10 02:54:29 +0000 | [diff] [blame] | 241 | pr_err("kmalloc failed\n"); |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 242 | return -ENOMEM; |
| 243 | } |
| 244 | |
| 245 | |
| 246 | /*---PHY CONTROL AND CONFIGURATION-----------------------------------------*/ |
| 247 | |
Bryan Wu | 4ae5a3a | 2007-09-19 23:37:36 +0800 | [diff] [blame] | 248 | /* |
| 249 | * MII operations |
| 250 | */ |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 251 | /* Wait until the previous MDC/MDIO transaction has completed */ |
Mike Frysinger | 2bfa0f0 | 2010-05-10 05:39:13 +0000 | [diff] [blame] | 252 | static int bfin_mdio_poll(void) |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 253 | { |
| 254 | int timeout_cnt = MAX_TIMEOUT_CNT; |
| 255 | |
| 256 | /* poll the STABUSY bit */ |
| 257 | while ((bfin_read_EMAC_STAADD()) & STABUSY) { |
Bryan Wu | 6db9e46 | 2008-01-30 16:52:21 +0800 | [diff] [blame] | 258 | udelay(1); |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 259 | if (timeout_cnt-- < 0) { |
Mike Frysinger | c6dd509 | 2011-01-10 02:54:29 +0000 | [diff] [blame] | 260 | pr_err("wait MDC/MDIO transaction to complete timeout\n"); |
Mike Frysinger | 2bfa0f0 | 2010-05-10 05:39:13 +0000 | [diff] [blame] | 261 | return -ETIMEDOUT; |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 262 | } |
| 263 | } |
Mike Frysinger | 2bfa0f0 | 2010-05-10 05:39:13 +0000 | [diff] [blame] | 264 | |
| 265 | return 0; |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 266 | } |
| 267 | |
| 268 | /* Read an off-chip register in a PHY through the MDC/MDIO port */ |
Adrian Bunk | 0ed0563e | 2008-10-12 21:15:17 -0700 | [diff] [blame] | 269 | static int bfin_mdiobus_read(struct mii_bus *bus, int phy_addr, int regnum) |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 270 | { |
Mike Frysinger | 2bfa0f0 | 2010-05-10 05:39:13 +0000 | [diff] [blame] | 271 | int ret; |
| 272 | |
| 273 | ret = bfin_mdio_poll(); |
| 274 | if (ret) |
| 275 | return ret; |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 276 | |
Bryan Wu | 4ae5a3a | 2007-09-19 23:37:36 +0800 | [diff] [blame] | 277 | /* read mode */ |
| 278 | bfin_write_EMAC_STAADD(SET_PHYAD((u16) phy_addr) | |
| 279 | SET_REGAD((u16) regnum) | |
| 280 | STABUSY); |
| 281 | |
Mike Frysinger | 2bfa0f0 | 2010-05-10 05:39:13 +0000 | [diff] [blame] | 282 | ret = bfin_mdio_poll(); |
| 283 | if (ret) |
| 284 | return ret; |
Bryan Wu | 4ae5a3a | 2007-09-19 23:37:36 +0800 | [diff] [blame] | 285 | |
| 286 | return (int) bfin_read_EMAC_STADAT(); |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 287 | } |
| 288 | |
| 289 | /* Write an off-chip register in a PHY through the MDC/MDIO port */ |
Adrian Bunk | 0ed0563e | 2008-10-12 21:15:17 -0700 | [diff] [blame] | 290 | static int bfin_mdiobus_write(struct mii_bus *bus, int phy_addr, int regnum, |
| 291 | u16 value) |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 292 | { |
Mike Frysinger | 2bfa0f0 | 2010-05-10 05:39:13 +0000 | [diff] [blame] | 293 | int ret; |
| 294 | |
| 295 | ret = bfin_mdio_poll(); |
| 296 | if (ret) |
| 297 | return ret; |
Bryan Wu | 4ae5a3a | 2007-09-19 23:37:36 +0800 | [diff] [blame] | 298 | |
| 299 | bfin_write_EMAC_STADAT((u32) value); |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 300 | |
| 301 | /* write mode */ |
Bryan Wu | 4ae5a3a | 2007-09-19 23:37:36 +0800 | [diff] [blame] | 302 | bfin_write_EMAC_STAADD(SET_PHYAD((u16) phy_addr) | |
| 303 | SET_REGAD((u16) regnum) | |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 304 | STAOP | |
| 305 | STABUSY); |
| 306 | |
Mike Frysinger | 2bfa0f0 | 2010-05-10 05:39:13 +0000 | [diff] [blame] | 307 | return bfin_mdio_poll(); |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 308 | } |
| 309 | |
Bryan Wu | 7ef0a7e | 2008-04-25 11:53:10 +0800 | [diff] [blame] | 310 | static void bfin_mac_adjust_link(struct net_device *dev) |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 311 | { |
Bryan Wu | 7ef0a7e | 2008-04-25 11:53:10 +0800 | [diff] [blame] | 312 | struct bfin_mac_local *lp = netdev_priv(dev); |
Bryan Wu | 4ae5a3a | 2007-09-19 23:37:36 +0800 | [diff] [blame] | 313 | struct phy_device *phydev = lp->phydev; |
| 314 | unsigned long flags; |
| 315 | int new_state = 0; |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 316 | |
Bryan Wu | 4ae5a3a | 2007-09-19 23:37:36 +0800 | [diff] [blame] | 317 | spin_lock_irqsave(&lp->lock, flags); |
| 318 | if (phydev->link) { |
| 319 | /* Now we make sure that we can be in full duplex mode. |
| 320 | * If not, we operate in half-duplex mode. */ |
| 321 | if (phydev->duplex != lp->old_duplex) { |
| 322 | u32 opmode = bfin_read_EMAC_OPMODE(); |
| 323 | new_state = 1; |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 324 | |
Bryan Wu | 4ae5a3a | 2007-09-19 23:37:36 +0800 | [diff] [blame] | 325 | if (phydev->duplex) |
| 326 | opmode |= FDMODE; |
| 327 | else |
| 328 | opmode &= ~(FDMODE); |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 329 | |
Bryan Wu | 4ae5a3a | 2007-09-19 23:37:36 +0800 | [diff] [blame] | 330 | bfin_write_EMAC_OPMODE(opmode); |
| 331 | lp->old_duplex = phydev->duplex; |
| 332 | } |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 333 | |
Bryan Wu | 4ae5a3a | 2007-09-19 23:37:36 +0800 | [diff] [blame] | 334 | if (phydev->speed != lp->old_speed) { |
Sonic Zhang | 02460d0 | 2010-06-11 10:44:22 +0000 | [diff] [blame] | 335 | if (phydev->interface == PHY_INTERFACE_MODE_RMII) { |
| 336 | u32 opmode = bfin_read_EMAC_OPMODE(); |
| 337 | switch (phydev->speed) { |
| 338 | case 10: |
| 339 | opmode |= RMII_10; |
| 340 | break; |
| 341 | case 100: |
| 342 | opmode &= ~RMII_10; |
| 343 | break; |
| 344 | default: |
Mike Frysinger | c6dd509 | 2011-01-10 02:54:29 +0000 | [diff] [blame] | 345 | netdev_warn(dev, |
| 346 | "Ack! Speed (%d) is not 10/100!\n", |
| 347 | phydev->speed); |
Sonic Zhang | 02460d0 | 2010-06-11 10:44:22 +0000 | [diff] [blame] | 348 | break; |
| 349 | } |
| 350 | bfin_write_EMAC_OPMODE(opmode); |
Bryan Wu | 4ae5a3a | 2007-09-19 23:37:36 +0800 | [diff] [blame] | 351 | } |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 352 | |
Bryan Wu | 4ae5a3a | 2007-09-19 23:37:36 +0800 | [diff] [blame] | 353 | new_state = 1; |
| 354 | lp->old_speed = phydev->speed; |
| 355 | } |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 356 | |
Bryan Wu | 4ae5a3a | 2007-09-19 23:37:36 +0800 | [diff] [blame] | 357 | if (!lp->old_link) { |
| 358 | new_state = 1; |
| 359 | lp->old_link = 1; |
Bryan Wu | 4ae5a3a | 2007-09-19 23:37:36 +0800 | [diff] [blame] | 360 | } |
| 361 | } else if (lp->old_link) { |
| 362 | new_state = 1; |
| 363 | lp->old_link = 0; |
| 364 | lp->old_speed = 0; |
| 365 | lp->old_duplex = -1; |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 366 | } |
| 367 | |
Bryan Wu | 4ae5a3a | 2007-09-19 23:37:36 +0800 | [diff] [blame] | 368 | if (new_state) { |
| 369 | u32 opmode = bfin_read_EMAC_OPMODE(); |
| 370 | phy_print_status(phydev); |
| 371 | pr_debug("EMAC_OPMODE = 0x%08x\n", opmode); |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 372 | } |
Bryan Wu | 4ae5a3a | 2007-09-19 23:37:36 +0800 | [diff] [blame] | 373 | |
| 374 | spin_unlock_irqrestore(&lp->lock, flags); |
| 375 | } |
| 376 | |
Bryan Wu | 7cc8f38 | 2008-01-30 16:52:22 +0800 | [diff] [blame] | 377 | /* MDC = 2.5 MHz */ |
| 378 | #define MDC_CLK 2500000 |
| 379 | |
Sonic Zhang | 02460d0 | 2010-06-11 10:44:22 +0000 | [diff] [blame] | 380 | static int mii_probe(struct net_device *dev, int phy_mode) |
Bryan Wu | 4ae5a3a | 2007-09-19 23:37:36 +0800 | [diff] [blame] | 381 | { |
Bryan Wu | 7ef0a7e | 2008-04-25 11:53:10 +0800 | [diff] [blame] | 382 | struct bfin_mac_local *lp = netdev_priv(dev); |
Bryan Wu | 4ae5a3a | 2007-09-19 23:37:36 +0800 | [diff] [blame] | 383 | struct phy_device *phydev = NULL; |
| 384 | unsigned short sysctl; |
| 385 | int i; |
Bryan Wu | 7cc8f38 | 2008-01-30 16:52:22 +0800 | [diff] [blame] | 386 | u32 sclk, mdc_div; |
Bryan Wu | 4ae5a3a | 2007-09-19 23:37:36 +0800 | [diff] [blame] | 387 | |
| 388 | /* Enable PHY output early */ |
Mike Frysinger | 98f672c | 2010-01-18 21:14:12 +0000 | [diff] [blame] | 389 | if (!(bfin_read_VR_CTL() & CLKBUFOE)) |
| 390 | bfin_write_VR_CTL(bfin_read_VR_CTL() | CLKBUFOE); |
Bryan Wu | 4ae5a3a | 2007-09-19 23:37:36 +0800 | [diff] [blame] | 391 | |
Bryan Wu | 7cc8f38 | 2008-01-30 16:52:22 +0800 | [diff] [blame] | 392 | sclk = get_sclk(); |
| 393 | mdc_div = ((sclk / MDC_CLK) / 2) - 1; |
| 394 | |
Bryan Wu | 4ae5a3a | 2007-09-19 23:37:36 +0800 | [diff] [blame] | 395 | sysctl = bfin_read_EMAC_SYSCTL(); |
Bryan Wu | 9dc7f30 | 2008-01-30 16:52:28 +0800 | [diff] [blame] | 396 | sysctl = (sysctl & ~MDCDIV) | SET_MDCDIV(mdc_div); |
Bryan Wu | 4ae5a3a | 2007-09-19 23:37:36 +0800 | [diff] [blame] | 397 | bfin_write_EMAC_SYSCTL(sysctl); |
| 398 | |
Sonic Zhang | 02460d0 | 2010-06-11 10:44:22 +0000 | [diff] [blame] | 399 | /* search for connected PHY device */ |
| 400 | for (i = 0; i < PHY_MAX_ADDR; ++i) { |
Sudip Mukherjee | 053842a | 2016-01-08 16:58:14 +0530 | [diff] [blame] | 401 | struct phy_device *const tmp_phydev = |
| 402 | mdiobus_get_phy(lp->mii_bus, i); |
Bryan Wu | 4ae5a3a | 2007-09-19 23:37:36 +0800 | [diff] [blame] | 403 | |
| 404 | if (!tmp_phydev) |
| 405 | continue; /* no PHY here... */ |
| 406 | |
| 407 | phydev = tmp_phydev; |
| 408 | break; /* found it */ |
| 409 | } |
| 410 | |
| 411 | /* now we are supposed to have a proper phydev, to attach to... */ |
| 412 | if (!phydev) { |
Mike Frysinger | c6dd509 | 2011-01-10 02:54:29 +0000 | [diff] [blame] | 413 | netdev_err(dev, "no phy device found\n"); |
Bryan Wu | 4ae5a3a | 2007-09-19 23:37:36 +0800 | [diff] [blame] | 414 | return -ENODEV; |
| 415 | } |
| 416 | |
Sonic Zhang | 02460d0 | 2010-06-11 10:44:22 +0000 | [diff] [blame] | 417 | if (phy_mode != PHY_INTERFACE_MODE_RMII && |
| 418 | phy_mode != PHY_INTERFACE_MODE_MII) { |
Mike Frysinger | c6dd509 | 2011-01-10 02:54:29 +0000 | [diff] [blame] | 419 | netdev_err(dev, "invalid phy interface mode\n"); |
Sonic Zhang | 02460d0 | 2010-06-11 10:44:22 +0000 | [diff] [blame] | 420 | return -EINVAL; |
| 421 | } |
| 422 | |
Andrew Lunn | 84eff6d | 2016-01-06 20:11:10 +0100 | [diff] [blame] | 423 | phydev = phy_connect(dev, phydev_name(phydev), |
Florian Fainelli | f9a8f83 | 2013-01-14 00:52:52 +0000 | [diff] [blame] | 424 | &bfin_mac_adjust_link, phy_mode); |
Bryan Wu | 4ae5a3a | 2007-09-19 23:37:36 +0800 | [diff] [blame] | 425 | |
| 426 | if (IS_ERR(phydev)) { |
Mike Frysinger | c6dd509 | 2011-01-10 02:54:29 +0000 | [diff] [blame] | 427 | netdev_err(dev, "could not attach PHY\n"); |
Bryan Wu | 4ae5a3a | 2007-09-19 23:37:36 +0800 | [diff] [blame] | 428 | return PTR_ERR(phydev); |
| 429 | } |
| 430 | |
| 431 | /* mask with MAC supported features */ |
| 432 | phydev->supported &= (SUPPORTED_10baseT_Half |
| 433 | | SUPPORTED_10baseT_Full |
| 434 | | SUPPORTED_100baseT_Half |
| 435 | | SUPPORTED_100baseT_Full |
| 436 | | SUPPORTED_Autoneg |
| 437 | | SUPPORTED_Pause | SUPPORTED_Asym_Pause |
| 438 | | SUPPORTED_MII |
| 439 | | SUPPORTED_TP); |
| 440 | |
| 441 | phydev->advertising = phydev->supported; |
| 442 | |
| 443 | lp->old_link = 0; |
| 444 | lp->old_speed = 0; |
| 445 | lp->old_duplex = -1; |
| 446 | lp->phydev = phydev; |
| 447 | |
Andrew Lunn | 2220943 | 2016-01-06 20:11:13 +0100 | [diff] [blame] | 448 | phy_attached_print(phydev, "mdc_clk=%dHz(mdc_div=%d)@sclk=%dMHz)\n", |
| 449 | MDC_CLK, mdc_div, sclk / 1000000); |
Bryan Wu | 4ae5a3a | 2007-09-19 23:37:36 +0800 | [diff] [blame] | 450 | |
| 451 | return 0; |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 452 | } |
| 453 | |
Bryan Wu | 679dce3 | 2008-04-25 11:53:11 +0800 | [diff] [blame] | 454 | /* |
| 455 | * Ethtool support |
| 456 | */ |
| 457 | |
Michael Hennerich | 53fd3f2 | 2010-05-10 05:39:11 +0000 | [diff] [blame] | 458 | /* |
| 459 | * interrupt routine for magic packet wakeup |
| 460 | */ |
| 461 | static irqreturn_t bfin_mac_wake_interrupt(int irq, void *dev_id) |
| 462 | { |
| 463 | return IRQ_HANDLED; |
| 464 | } |
| 465 | |
Bryan Wu | 679dce3 | 2008-04-25 11:53:11 +0800 | [diff] [blame] | 466 | static int |
| 467 | bfin_mac_ethtool_getsettings(struct net_device *dev, struct ethtool_cmd *cmd) |
| 468 | { |
| 469 | struct bfin_mac_local *lp = netdev_priv(dev); |
| 470 | |
| 471 | if (lp->phydev) |
| 472 | return phy_ethtool_gset(lp->phydev, cmd); |
| 473 | |
| 474 | return -EINVAL; |
| 475 | } |
| 476 | |
| 477 | static int |
| 478 | bfin_mac_ethtool_setsettings(struct net_device *dev, struct ethtool_cmd *cmd) |
| 479 | { |
| 480 | struct bfin_mac_local *lp = netdev_priv(dev); |
| 481 | |
| 482 | if (!capable(CAP_NET_ADMIN)) |
| 483 | return -EPERM; |
| 484 | |
| 485 | if (lp->phydev) |
| 486 | return phy_ethtool_sset(lp->phydev, cmd); |
| 487 | |
| 488 | return -EINVAL; |
| 489 | } |
| 490 | |
| 491 | static void bfin_mac_ethtool_getdrvinfo(struct net_device *dev, |
| 492 | struct ethtool_drvinfo *info) |
| 493 | { |
Jiri Pirko | 7826d43 | 2013-01-06 00:44:26 +0000 | [diff] [blame] | 494 | strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver)); |
| 495 | strlcpy(info->version, DRV_VERSION, sizeof(info->version)); |
| 496 | strlcpy(info->fw_version, "N/A", sizeof(info->fw_version)); |
| 497 | strlcpy(info->bus_info, dev_name(&dev->dev), sizeof(info->bus_info)); |
Bryan Wu | 679dce3 | 2008-04-25 11:53:11 +0800 | [diff] [blame] | 498 | } |
| 499 | |
Michael Hennerich | 53fd3f2 | 2010-05-10 05:39:11 +0000 | [diff] [blame] | 500 | static void bfin_mac_ethtool_getwol(struct net_device *dev, |
| 501 | struct ethtool_wolinfo *wolinfo) |
| 502 | { |
| 503 | struct bfin_mac_local *lp = netdev_priv(dev); |
| 504 | |
| 505 | wolinfo->supported = WAKE_MAGIC; |
| 506 | wolinfo->wolopts = lp->wol; |
| 507 | } |
| 508 | |
| 509 | static int bfin_mac_ethtool_setwol(struct net_device *dev, |
| 510 | struct ethtool_wolinfo *wolinfo) |
| 511 | { |
| 512 | struct bfin_mac_local *lp = netdev_priv(dev); |
| 513 | int rc; |
| 514 | |
| 515 | if (wolinfo->wolopts & (WAKE_MAGICSECURE | |
| 516 | WAKE_UCAST | |
| 517 | WAKE_MCAST | |
| 518 | WAKE_BCAST | |
| 519 | WAKE_ARP)) |
| 520 | return -EOPNOTSUPP; |
| 521 | |
| 522 | lp->wol = wolinfo->wolopts; |
| 523 | |
| 524 | if (lp->wol && !lp->irq_wake_requested) { |
| 525 | /* register wake irq handler */ |
| 526 | rc = request_irq(IRQ_MAC_WAKEDET, bfin_mac_wake_interrupt, |
Michael Opdenacker | 63aca0f | 2013-09-12 05:35:43 +0200 | [diff] [blame] | 527 | 0, "EMAC_WAKE", dev); |
Michael Hennerich | 53fd3f2 | 2010-05-10 05:39:11 +0000 | [diff] [blame] | 528 | if (rc) |
| 529 | return rc; |
| 530 | lp->irq_wake_requested = true; |
| 531 | } |
| 532 | |
| 533 | if (!lp->wol && lp->irq_wake_requested) { |
| 534 | free_irq(IRQ_MAC_WAKEDET, dev); |
| 535 | lp->irq_wake_requested = false; |
| 536 | } |
| 537 | |
| 538 | /* Make sure the PHY driver doesn't suspend */ |
| 539 | device_init_wakeup(&dev->dev, lp->wol); |
| 540 | |
| 541 | return 0; |
| 542 | } |
| 543 | |
Richard Cochran | 85c153d | 2012-10-31 06:27:22 +0000 | [diff] [blame] | 544 | #ifdef CONFIG_BFIN_MAC_USE_HWSTAMP |
Richard Cochran | a85bbdd | 2012-04-03 22:59:20 +0000 | [diff] [blame] | 545 | static int bfin_mac_ethtool_get_ts_info(struct net_device *dev, |
David S. Miller | 3ffa429 | 2012-04-06 00:17:50 -0400 | [diff] [blame] | 546 | struct ethtool_ts_info *info) |
Richard Cochran | a85bbdd | 2012-04-03 22:59:20 +0000 | [diff] [blame] | 547 | { |
Richard Cochran | dd87b22 | 2012-10-31 06:27:24 +0000 | [diff] [blame] | 548 | struct bfin_mac_local *lp = netdev_priv(dev); |
| 549 | |
Richard Cochran | a85bbdd | 2012-04-03 22:59:20 +0000 | [diff] [blame] | 550 | info->so_timestamping = |
| 551 | SOF_TIMESTAMPING_TX_HARDWARE | |
| 552 | SOF_TIMESTAMPING_RX_HARDWARE | |
Richard Cochran | bc3c5f6 | 2012-10-31 06:27:23 +0000 | [diff] [blame] | 553 | SOF_TIMESTAMPING_RAW_HARDWARE; |
Richard Cochran | dd87b22 | 2012-10-31 06:27:24 +0000 | [diff] [blame] | 554 | info->phc_index = lp->phc_index; |
Richard Cochran | a85bbdd | 2012-04-03 22:59:20 +0000 | [diff] [blame] | 555 | info->tx_types = |
| 556 | (1 << HWTSTAMP_TX_OFF) | |
| 557 | (1 << HWTSTAMP_TX_ON); |
| 558 | info->rx_filters = |
| 559 | (1 << HWTSTAMP_FILTER_NONE) | |
| 560 | (1 << HWTSTAMP_FILTER_PTP_V1_L4_EVENT) | |
| 561 | (1 << HWTSTAMP_FILTER_PTP_V2_L2_EVENT) | |
| 562 | (1 << HWTSTAMP_FILTER_PTP_V2_L4_EVENT); |
| 563 | return 0; |
| 564 | } |
Richard Cochran | 85c153d | 2012-10-31 06:27:22 +0000 | [diff] [blame] | 565 | #endif |
Richard Cochran | a85bbdd | 2012-04-03 22:59:20 +0000 | [diff] [blame] | 566 | |
Stephen Hemminger | 0fc0b73 | 2009-09-02 01:03:33 -0700 | [diff] [blame] | 567 | static const struct ethtool_ops bfin_mac_ethtool_ops = { |
Bryan Wu | 679dce3 | 2008-04-25 11:53:11 +0800 | [diff] [blame] | 568 | .get_settings = bfin_mac_ethtool_getsettings, |
| 569 | .set_settings = bfin_mac_ethtool_setsettings, |
| 570 | .get_link = ethtool_op_get_link, |
| 571 | .get_drvinfo = bfin_mac_ethtool_getdrvinfo, |
Michael Hennerich | 53fd3f2 | 2010-05-10 05:39:11 +0000 | [diff] [blame] | 572 | .get_wol = bfin_mac_ethtool_getwol, |
| 573 | .set_wol = bfin_mac_ethtool_setwol, |
Richard Cochran | 85c153d | 2012-10-31 06:27:22 +0000 | [diff] [blame] | 574 | #ifdef CONFIG_BFIN_MAC_USE_HWSTAMP |
Richard Cochran | a85bbdd | 2012-04-03 22:59:20 +0000 | [diff] [blame] | 575 | .get_ts_info = bfin_mac_ethtool_get_ts_info, |
Richard Cochran | 85c153d | 2012-10-31 06:27:22 +0000 | [diff] [blame] | 576 | #endif |
Bryan Wu | 679dce3 | 2008-04-25 11:53:11 +0800 | [diff] [blame] | 577 | }; |
| 578 | |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 579 | /**************************************************************************/ |
Mike Frysinger | 5ca1bb5 | 2011-01-10 02:54:30 +0000 | [diff] [blame] | 580 | static void setup_system_regs(struct net_device *dev) |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 581 | { |
Sonic Zhang | 02460d0 | 2010-06-11 10:44:22 +0000 | [diff] [blame] | 582 | struct bfin_mac_local *lp = netdev_priv(dev); |
| 583 | int i; |
Bryan Wu | 4ae5a3a | 2007-09-19 23:37:36 +0800 | [diff] [blame] | 584 | unsigned short sysctl; |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 585 | |
Bryan Wu | 4ae5a3a | 2007-09-19 23:37:36 +0800 | [diff] [blame] | 586 | /* |
| 587 | * Odd word alignment for Receive Frame DMA word |
| 588 | * Configure checksum support and rcve frame word alignment |
| 589 | */ |
| 590 | sysctl = bfin_read_EMAC_SYSCTL(); |
Sonic Zhang | 02460d0 | 2010-06-11 10:44:22 +0000 | [diff] [blame] | 591 | /* |
| 592 | * check if interrupt is requested for any PHY, |
| 593 | * enable PHY interrupt only if needed |
| 594 | */ |
| 595 | for (i = 0; i < PHY_MAX_ADDR; ++i) |
| 596 | if (lp->mii_bus->irq[i] != PHY_POLL) |
| 597 | break; |
| 598 | if (i < PHY_MAX_ADDR) |
| 599 | sysctl |= PHYIE; |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 600 | sysctl |= RXDWA; |
Sonic Zhang | 812a9de | 2010-05-10 05:39:10 +0000 | [diff] [blame] | 601 | #if defined(BFIN_MAC_CSUM_OFFLOAD) |
| 602 | sysctl |= RXCKS; |
| 603 | #else |
| 604 | sysctl &= ~RXCKS; |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 605 | #endif |
| 606 | bfin_write_EMAC_SYSCTL(sysctl); |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 607 | |
| 608 | bfin_write_EMAC_MMC_CTL(RSTC | CROLL); |
| 609 | |
Mike Frysinger | c599bd6 | 2011-01-10 02:54:32 +0000 | [diff] [blame] | 610 | /* Set vlan regs to let 1522 bytes long packets pass through */ |
| 611 | bfin_write_EMAC_VLAN1(lp->vlan1_mask); |
| 612 | bfin_write_EMAC_VLAN2(lp->vlan2_mask); |
| 613 | |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 614 | /* Initialize the TX DMA channel registers */ |
| 615 | bfin_write_DMA2_X_COUNT(0); |
| 616 | bfin_write_DMA2_X_MODIFY(4); |
| 617 | bfin_write_DMA2_Y_COUNT(0); |
| 618 | bfin_write_DMA2_Y_MODIFY(0); |
| 619 | |
| 620 | /* Initialize the RX DMA channel registers */ |
| 621 | bfin_write_DMA1_X_COUNT(0); |
| 622 | bfin_write_DMA1_X_MODIFY(4); |
| 623 | bfin_write_DMA1_Y_COUNT(0); |
| 624 | bfin_write_DMA1_Y_MODIFY(0); |
| 625 | } |
| 626 | |
Alex Landau | 73f8318 | 2007-09-19 23:14:18 +0800 | [diff] [blame] | 627 | static void setup_mac_addr(u8 *mac_addr) |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 628 | { |
| 629 | u32 addr_low = le32_to_cpu(*(__le32 *) & mac_addr[0]); |
| 630 | u16 addr_hi = le16_to_cpu(*(__le16 *) & mac_addr[4]); |
| 631 | |
| 632 | /* this depends on a little-endian machine */ |
| 633 | bfin_write_EMAC_ADDRLO(addr_low); |
| 634 | bfin_write_EMAC_ADDRHI(addr_hi); |
| 635 | } |
| 636 | |
Bryan Wu | 7ef0a7e | 2008-04-25 11:53:10 +0800 | [diff] [blame] | 637 | static int bfin_mac_set_mac_address(struct net_device *dev, void *p) |
Alex Landau | 73f8318 | 2007-09-19 23:14:18 +0800 | [diff] [blame] | 638 | { |
| 639 | struct sockaddr *addr = p; |
| 640 | if (netif_running(dev)) |
| 641 | return -EBUSY; |
| 642 | memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); |
| 643 | setup_mac_addr(dev->dev_addr); |
| 644 | return 0; |
| 645 | } |
| 646 | |
Barry Song | fe92afe | 2010-05-17 17:19:40 -0700 | [diff] [blame] | 647 | #ifdef CONFIG_BFIN_MAC_USE_HWSTAMP |
| 648 | #define bfin_mac_hwtstamp_is_none(cfg) ((cfg) == HWTSTAMP_FILTER_NONE) |
| 649 | |
Richard Cochran | bc3c5f6 | 2012-10-31 06:27:23 +0000 | [diff] [blame] | 650 | static u32 bfin_select_phc_clock(u32 input_clk, unsigned int *shift_result) |
| 651 | { |
| 652 | u32 ipn = 1000000000UL / input_clk; |
| 653 | u32 ppn = 1; |
| 654 | unsigned int shift = 0; |
| 655 | |
| 656 | while (ppn <= ipn) { |
| 657 | ppn <<= 1; |
| 658 | shift++; |
| 659 | } |
| 660 | *shift_result = shift; |
| 661 | return 1000000000UL / ppn; |
| 662 | } |
| 663 | |
Ben Hutchings | 7575c91 | 2013-11-18 22:54:03 +0000 | [diff] [blame] | 664 | static int bfin_mac_hwtstamp_set(struct net_device *netdev, |
| 665 | struct ifreq *ifr) |
Barry Song | fe92afe | 2010-05-17 17:19:40 -0700 | [diff] [blame] | 666 | { |
| 667 | struct hwtstamp_config config; |
| 668 | struct bfin_mac_local *lp = netdev_priv(netdev); |
| 669 | u16 ptpctl; |
| 670 | u32 ptpfv1, ptpfv2, ptpfv3, ptpfoff; |
| 671 | |
| 672 | if (copy_from_user(&config, ifr->ifr_data, sizeof(config))) |
| 673 | return -EFAULT; |
| 674 | |
| 675 | pr_debug("%s config flag:0x%x, tx_type:0x%x, rx_filter:0x%x\n", |
| 676 | __func__, config.flags, config.tx_type, config.rx_filter); |
| 677 | |
| 678 | /* reserved for future extensions */ |
| 679 | if (config.flags) |
| 680 | return -EINVAL; |
| 681 | |
| 682 | if ((config.tx_type != HWTSTAMP_TX_OFF) && |
| 683 | (config.tx_type != HWTSTAMP_TX_ON)) |
| 684 | return -ERANGE; |
| 685 | |
| 686 | ptpctl = bfin_read_EMAC_PTP_CTL(); |
| 687 | |
| 688 | switch (config.rx_filter) { |
| 689 | case HWTSTAMP_FILTER_NONE: |
| 690 | /* |
| 691 | * Dont allow any timestamping |
| 692 | */ |
| 693 | ptpfv3 = 0xFFFFFFFF; |
| 694 | bfin_write_EMAC_PTP_FV3(ptpfv3); |
| 695 | break; |
| 696 | case HWTSTAMP_FILTER_PTP_V1_L4_EVENT: |
| 697 | case HWTSTAMP_FILTER_PTP_V1_L4_SYNC: |
| 698 | case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ: |
| 699 | /* |
| 700 | * Clear the five comparison mask bits (bits[12:8]) in EMAC_PTP_CTL) |
| 701 | * to enable all the field matches. |
| 702 | */ |
| 703 | ptpctl &= ~0x1F00; |
| 704 | bfin_write_EMAC_PTP_CTL(ptpctl); |
| 705 | /* |
| 706 | * Keep the default values of the EMAC_PTP_FOFF register. |
| 707 | */ |
| 708 | ptpfoff = 0x4A24170C; |
| 709 | bfin_write_EMAC_PTP_FOFF(ptpfoff); |
| 710 | /* |
| 711 | * Keep the default values of the EMAC_PTP_FV1 and EMAC_PTP_FV2 |
| 712 | * registers. |
| 713 | */ |
| 714 | ptpfv1 = 0x11040800; |
| 715 | bfin_write_EMAC_PTP_FV1(ptpfv1); |
| 716 | ptpfv2 = 0x0140013F; |
| 717 | bfin_write_EMAC_PTP_FV2(ptpfv2); |
| 718 | /* |
| 719 | * The default value (0xFFFC) allows the timestamping of both |
| 720 | * received Sync messages and Delay_Req messages. |
| 721 | */ |
| 722 | ptpfv3 = 0xFFFFFFFC; |
| 723 | bfin_write_EMAC_PTP_FV3(ptpfv3); |
| 724 | |
| 725 | config.rx_filter = HWTSTAMP_FILTER_PTP_V1_L4_EVENT; |
| 726 | break; |
| 727 | case HWTSTAMP_FILTER_PTP_V2_L4_EVENT: |
| 728 | case HWTSTAMP_FILTER_PTP_V2_L4_SYNC: |
| 729 | case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ: |
| 730 | /* Clear all five comparison mask bits (bits[12:8]) in the |
| 731 | * EMAC_PTP_CTL register to enable all the field matches. |
| 732 | */ |
| 733 | ptpctl &= ~0x1F00; |
| 734 | bfin_write_EMAC_PTP_CTL(ptpctl); |
| 735 | /* |
| 736 | * Keep the default values of the EMAC_PTP_FOFF register, except set |
| 737 | * the PTPCOF field to 0x2A. |
| 738 | */ |
| 739 | ptpfoff = 0x2A24170C; |
| 740 | bfin_write_EMAC_PTP_FOFF(ptpfoff); |
| 741 | /* |
| 742 | * Keep the default values of the EMAC_PTP_FV1 and EMAC_PTP_FV2 |
| 743 | * registers. |
| 744 | */ |
| 745 | ptpfv1 = 0x11040800; |
| 746 | bfin_write_EMAC_PTP_FV1(ptpfv1); |
| 747 | ptpfv2 = 0x0140013F; |
| 748 | bfin_write_EMAC_PTP_FV2(ptpfv2); |
| 749 | /* |
| 750 | * To allow the timestamping of Pdelay_Req and Pdelay_Resp, set |
| 751 | * the value to 0xFFF0. |
| 752 | */ |
| 753 | ptpfv3 = 0xFFFFFFF0; |
| 754 | bfin_write_EMAC_PTP_FV3(ptpfv3); |
| 755 | |
| 756 | config.rx_filter = HWTSTAMP_FILTER_PTP_V2_L4_EVENT; |
| 757 | break; |
| 758 | case HWTSTAMP_FILTER_PTP_V2_L2_EVENT: |
| 759 | case HWTSTAMP_FILTER_PTP_V2_L2_SYNC: |
| 760 | case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ: |
| 761 | /* |
| 762 | * Clear bits 8 and 12 of the EMAC_PTP_CTL register to enable only the |
| 763 | * EFTM and PTPCM field comparison. |
| 764 | */ |
| 765 | ptpctl &= ~0x1100; |
| 766 | bfin_write_EMAC_PTP_CTL(ptpctl); |
| 767 | /* |
| 768 | * Keep the default values of all the fields of the EMAC_PTP_FOFF |
| 769 | * register, except set the PTPCOF field to 0x0E. |
| 770 | */ |
| 771 | ptpfoff = 0x0E24170C; |
| 772 | bfin_write_EMAC_PTP_FOFF(ptpfoff); |
| 773 | /* |
| 774 | * Program bits [15:0] of the EMAC_PTP_FV1 register to 0x88F7, which |
| 775 | * corresponds to PTP messages on the MAC layer. |
| 776 | */ |
| 777 | ptpfv1 = 0x110488F7; |
| 778 | bfin_write_EMAC_PTP_FV1(ptpfv1); |
| 779 | ptpfv2 = 0x0140013F; |
| 780 | bfin_write_EMAC_PTP_FV2(ptpfv2); |
| 781 | /* |
| 782 | * To allow the timestamping of Pdelay_Req and Pdelay_Resp |
| 783 | * messages, set the value to 0xFFF0. |
| 784 | */ |
| 785 | ptpfv3 = 0xFFFFFFF0; |
| 786 | bfin_write_EMAC_PTP_FV3(ptpfv3); |
| 787 | |
| 788 | config.rx_filter = HWTSTAMP_FILTER_PTP_V2_L2_EVENT; |
| 789 | break; |
| 790 | default: |
| 791 | return -ERANGE; |
| 792 | } |
| 793 | |
| 794 | if (config.tx_type == HWTSTAMP_TX_OFF && |
| 795 | bfin_mac_hwtstamp_is_none(config.rx_filter)) { |
| 796 | ptpctl &= ~PTP_EN; |
| 797 | bfin_write_EMAC_PTP_CTL(ptpctl); |
| 798 | |
| 799 | SSYNC(); |
| 800 | } else { |
| 801 | ptpctl |= PTP_EN; |
| 802 | bfin_write_EMAC_PTP_CTL(ptpctl); |
| 803 | |
| 804 | /* |
| 805 | * clear any existing timestamp |
| 806 | */ |
| 807 | bfin_read_EMAC_PTP_RXSNAPLO(); |
| 808 | bfin_read_EMAC_PTP_RXSNAPHI(); |
| 809 | |
| 810 | bfin_read_EMAC_PTP_TXSNAPLO(); |
| 811 | bfin_read_EMAC_PTP_TXSNAPHI(); |
| 812 | |
Barry Song | fe92afe | 2010-05-17 17:19:40 -0700 | [diff] [blame] | 813 | SSYNC(); |
Barry Song | fe92afe | 2010-05-17 17:19:40 -0700 | [diff] [blame] | 814 | } |
| 815 | |
| 816 | lp->stamp_cfg = config; |
| 817 | return copy_to_user(ifr->ifr_data, &config, sizeof(config)) ? |
| 818 | -EFAULT : 0; |
| 819 | } |
| 820 | |
Ben Hutchings | 7575c91 | 2013-11-18 22:54:03 +0000 | [diff] [blame] | 821 | static int bfin_mac_hwtstamp_get(struct net_device *netdev, |
| 822 | struct ifreq *ifr) |
| 823 | { |
| 824 | struct bfin_mac_local *lp = netdev_priv(netdev); |
| 825 | |
| 826 | return copy_to_user(ifr->ifr_data, &lp->stamp_cfg, |
| 827 | sizeof(lp->stamp_cfg)) ? |
| 828 | -EFAULT : 0; |
| 829 | } |
| 830 | |
Barry Song | fe92afe | 2010-05-17 17:19:40 -0700 | [diff] [blame] | 831 | static void bfin_tx_hwtstamp(struct net_device *netdev, struct sk_buff *skb) |
| 832 | { |
| 833 | struct bfin_mac_local *lp = netdev_priv(netdev); |
Barry Song | fe92afe | 2010-05-17 17:19:40 -0700 | [diff] [blame] | 834 | |
Oliver Hartkopp | 2244d07 | 2010-08-17 08:59:14 +0000 | [diff] [blame] | 835 | if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) { |
Barry Song | fe92afe | 2010-05-17 17:19:40 -0700 | [diff] [blame] | 836 | int timeout_cnt = MAX_TIMEOUT_CNT; |
| 837 | |
| 838 | /* When doing time stamping, keep the connection to the socket |
| 839 | * a while longer |
| 840 | */ |
Oliver Hartkopp | 2244d07 | 2010-08-17 08:59:14 +0000 | [diff] [blame] | 841 | skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS; |
Barry Song | fe92afe | 2010-05-17 17:19:40 -0700 | [diff] [blame] | 842 | |
| 843 | /* |
| 844 | * The timestamping is done at the EMAC module's MII/RMII interface |
| 845 | * when the module sees the Start of Frame of an event message packet. This |
| 846 | * interface is the closest possible place to the physical Ethernet transmission |
| 847 | * medium, providing the best timing accuracy. |
| 848 | */ |
| 849 | while ((!(bfin_read_EMAC_PTP_ISTAT() & TXTL)) && (--timeout_cnt)) |
| 850 | udelay(1); |
| 851 | if (timeout_cnt == 0) |
Mike Frysinger | c6dd509 | 2011-01-10 02:54:29 +0000 | [diff] [blame] | 852 | netdev_err(netdev, "timestamp the TX packet failed\n"); |
Barry Song | fe92afe | 2010-05-17 17:19:40 -0700 | [diff] [blame] | 853 | else { |
| 854 | struct skb_shared_hwtstamps shhwtstamps; |
| 855 | u64 ns; |
| 856 | u64 regval; |
| 857 | |
| 858 | regval = bfin_read_EMAC_PTP_TXSNAPLO(); |
| 859 | regval |= (u64)bfin_read_EMAC_PTP_TXSNAPHI() << 32; |
| 860 | memset(&shhwtstamps, 0, sizeof(shhwtstamps)); |
Richard Cochran | bc3c5f6 | 2012-10-31 06:27:23 +0000 | [diff] [blame] | 861 | ns = regval << lp->shift; |
Barry Song | fe92afe | 2010-05-17 17:19:40 -0700 | [diff] [blame] | 862 | shhwtstamps.hwtstamp = ns_to_ktime(ns); |
Barry Song | fe92afe | 2010-05-17 17:19:40 -0700 | [diff] [blame] | 863 | skb_tstamp_tx(skb, &shhwtstamps); |
Barry Song | fe92afe | 2010-05-17 17:19:40 -0700 | [diff] [blame] | 864 | } |
| 865 | } |
| 866 | } |
| 867 | |
| 868 | static void bfin_rx_hwtstamp(struct net_device *netdev, struct sk_buff *skb) |
| 869 | { |
| 870 | struct bfin_mac_local *lp = netdev_priv(netdev); |
| 871 | u32 valid; |
| 872 | u64 regval, ns; |
| 873 | struct skb_shared_hwtstamps *shhwtstamps; |
| 874 | |
| 875 | if (bfin_mac_hwtstamp_is_none(lp->stamp_cfg.rx_filter)) |
| 876 | return; |
| 877 | |
| 878 | valid = bfin_read_EMAC_PTP_ISTAT() & RXEL; |
| 879 | if (!valid) |
| 880 | return; |
| 881 | |
| 882 | shhwtstamps = skb_hwtstamps(skb); |
| 883 | |
| 884 | regval = bfin_read_EMAC_PTP_RXSNAPLO(); |
| 885 | regval |= (u64)bfin_read_EMAC_PTP_RXSNAPHI() << 32; |
Richard Cochran | bc3c5f6 | 2012-10-31 06:27:23 +0000 | [diff] [blame] | 886 | ns = regval << lp->shift; |
Barry Song | fe92afe | 2010-05-17 17:19:40 -0700 | [diff] [blame] | 887 | memset(shhwtstamps, 0, sizeof(*shhwtstamps)); |
| 888 | shhwtstamps->hwtstamp = ns_to_ktime(ns); |
Barry Song | fe92afe | 2010-05-17 17:19:40 -0700 | [diff] [blame] | 889 | } |
| 890 | |
Barry Song | fe92afe | 2010-05-17 17:19:40 -0700 | [diff] [blame] | 891 | static void bfin_mac_hwtstamp_init(struct net_device *netdev) |
| 892 | { |
| 893 | struct bfin_mac_local *lp = netdev_priv(netdev); |
Richard Cochran | dd87b22 | 2012-10-31 06:27:24 +0000 | [diff] [blame] | 894 | u64 addend, ppb; |
Richard Cochran | bc3c5f6 | 2012-10-31 06:27:23 +0000 | [diff] [blame] | 895 | u32 input_clk, phc_clk; |
Barry Song | fe92afe | 2010-05-17 17:19:40 -0700 | [diff] [blame] | 896 | |
| 897 | /* Initialize hardware timer */ |
Richard Cochran | bc3c5f6 | 2012-10-31 06:27:23 +0000 | [diff] [blame] | 898 | input_clk = get_sclk(); |
| 899 | phc_clk = bfin_select_phc_clock(input_clk, &lp->shift); |
| 900 | addend = phc_clk * (1ULL << 32); |
| 901 | do_div(addend, input_clk); |
| 902 | bfin_write_EMAC_PTP_ADDEND((u32)addend); |
Barry Song | fe92afe | 2010-05-17 17:19:40 -0700 | [diff] [blame] | 903 | |
Richard Cochran | bc3c5f6 | 2012-10-31 06:27:23 +0000 | [diff] [blame] | 904 | lp->addend = addend; |
Richard Cochran | dd87b22 | 2012-10-31 06:27:24 +0000 | [diff] [blame] | 905 | ppb = 1000000000ULL * input_clk; |
| 906 | do_div(ppb, phc_clk); |
| 907 | lp->max_ppb = ppb - 1000000000ULL - 1ULL; |
Barry Song | fe92afe | 2010-05-17 17:19:40 -0700 | [diff] [blame] | 908 | |
| 909 | /* Initialize hwstamp config */ |
| 910 | lp->stamp_cfg.rx_filter = HWTSTAMP_FILTER_NONE; |
| 911 | lp->stamp_cfg.tx_type = HWTSTAMP_TX_OFF; |
| 912 | } |
| 913 | |
Richard Cochran | dd87b22 | 2012-10-31 06:27:24 +0000 | [diff] [blame] | 914 | static u64 bfin_ptp_time_read(struct bfin_mac_local *lp) |
| 915 | { |
| 916 | u64 ns; |
| 917 | u32 lo, hi; |
| 918 | |
| 919 | lo = bfin_read_EMAC_PTP_TIMELO(); |
| 920 | hi = bfin_read_EMAC_PTP_TIMEHI(); |
| 921 | |
| 922 | ns = ((u64) hi) << 32; |
| 923 | ns |= lo; |
| 924 | ns <<= lp->shift; |
| 925 | |
| 926 | return ns; |
| 927 | } |
| 928 | |
| 929 | static void bfin_ptp_time_write(struct bfin_mac_local *lp, u64 ns) |
| 930 | { |
| 931 | u32 hi, lo; |
| 932 | |
| 933 | ns >>= lp->shift; |
| 934 | hi = ns >> 32; |
| 935 | lo = ns & 0xffffffff; |
| 936 | |
| 937 | bfin_write_EMAC_PTP_TIMELO(lo); |
| 938 | bfin_write_EMAC_PTP_TIMEHI(hi); |
| 939 | } |
| 940 | |
| 941 | /* PTP Hardware Clock operations */ |
| 942 | |
| 943 | static int bfin_ptp_adjfreq(struct ptp_clock_info *ptp, s32 ppb) |
| 944 | { |
| 945 | u64 adj; |
| 946 | u32 diff, addend; |
| 947 | int neg_adj = 0; |
| 948 | struct bfin_mac_local *lp = |
| 949 | container_of(ptp, struct bfin_mac_local, caps); |
| 950 | |
| 951 | if (ppb < 0) { |
| 952 | neg_adj = 1; |
| 953 | ppb = -ppb; |
| 954 | } |
| 955 | addend = lp->addend; |
| 956 | adj = addend; |
| 957 | adj *= ppb; |
| 958 | diff = div_u64(adj, 1000000000ULL); |
| 959 | |
| 960 | addend = neg_adj ? addend - diff : addend + diff; |
| 961 | |
| 962 | bfin_write_EMAC_PTP_ADDEND(addend); |
| 963 | |
| 964 | return 0; |
| 965 | } |
| 966 | |
| 967 | static int bfin_ptp_adjtime(struct ptp_clock_info *ptp, s64 delta) |
| 968 | { |
| 969 | s64 now; |
| 970 | unsigned long flags; |
| 971 | struct bfin_mac_local *lp = |
| 972 | container_of(ptp, struct bfin_mac_local, caps); |
| 973 | |
| 974 | spin_lock_irqsave(&lp->phc_lock, flags); |
| 975 | |
| 976 | now = bfin_ptp_time_read(lp); |
| 977 | now += delta; |
| 978 | bfin_ptp_time_write(lp, now); |
| 979 | |
| 980 | spin_unlock_irqrestore(&lp->phc_lock, flags); |
| 981 | |
| 982 | return 0; |
| 983 | } |
| 984 | |
Richard Cochran | 20ca7fb | 2015-03-29 23:11:54 +0200 | [diff] [blame] | 985 | static int bfin_ptp_gettime(struct ptp_clock_info *ptp, struct timespec64 *ts) |
Richard Cochran | dd87b22 | 2012-10-31 06:27:24 +0000 | [diff] [blame] | 986 | { |
| 987 | u64 ns; |
Richard Cochran | dd87b22 | 2012-10-31 06:27:24 +0000 | [diff] [blame] | 988 | unsigned long flags; |
| 989 | struct bfin_mac_local *lp = |
| 990 | container_of(ptp, struct bfin_mac_local, caps); |
| 991 | |
| 992 | spin_lock_irqsave(&lp->phc_lock, flags); |
| 993 | |
| 994 | ns = bfin_ptp_time_read(lp); |
| 995 | |
| 996 | spin_unlock_irqrestore(&lp->phc_lock, flags); |
| 997 | |
Richard Cochran | 96ff1c3 | 2015-03-31 23:08:06 +0200 | [diff] [blame] | 998 | *ts = ns_to_timespec64(ns); |
| 999 | |
Richard Cochran | dd87b22 | 2012-10-31 06:27:24 +0000 | [diff] [blame] | 1000 | return 0; |
| 1001 | } |
| 1002 | |
| 1003 | static int bfin_ptp_settime(struct ptp_clock_info *ptp, |
Richard Cochran | 20ca7fb | 2015-03-29 23:11:54 +0200 | [diff] [blame] | 1004 | const struct timespec64 *ts) |
Richard Cochran | dd87b22 | 2012-10-31 06:27:24 +0000 | [diff] [blame] | 1005 | { |
| 1006 | u64 ns; |
| 1007 | unsigned long flags; |
| 1008 | struct bfin_mac_local *lp = |
| 1009 | container_of(ptp, struct bfin_mac_local, caps); |
| 1010 | |
Richard Cochran | 96ff1c3 | 2015-03-31 23:08:06 +0200 | [diff] [blame] | 1011 | ns = timespec64_to_ns(ts); |
Richard Cochran | dd87b22 | 2012-10-31 06:27:24 +0000 | [diff] [blame] | 1012 | |
| 1013 | spin_lock_irqsave(&lp->phc_lock, flags); |
| 1014 | |
| 1015 | bfin_ptp_time_write(lp, ns); |
| 1016 | |
| 1017 | spin_unlock_irqrestore(&lp->phc_lock, flags); |
| 1018 | |
| 1019 | return 0; |
| 1020 | } |
| 1021 | |
| 1022 | static int bfin_ptp_enable(struct ptp_clock_info *ptp, |
| 1023 | struct ptp_clock_request *rq, int on) |
| 1024 | { |
| 1025 | return -EOPNOTSUPP; |
| 1026 | } |
| 1027 | |
| 1028 | static struct ptp_clock_info bfin_ptp_caps = { |
| 1029 | .owner = THIS_MODULE, |
| 1030 | .name = "BF518 clock", |
| 1031 | .max_adj = 0, |
| 1032 | .n_alarm = 0, |
| 1033 | .n_ext_ts = 0, |
| 1034 | .n_per_out = 0, |
Richard Cochran | 4986b4f0 | 2014-03-20 22:21:55 +0100 | [diff] [blame] | 1035 | .n_pins = 0, |
Richard Cochran | dd87b22 | 2012-10-31 06:27:24 +0000 | [diff] [blame] | 1036 | .pps = 0, |
| 1037 | .adjfreq = bfin_ptp_adjfreq, |
| 1038 | .adjtime = bfin_ptp_adjtime, |
Richard Cochran | 20ca7fb | 2015-03-29 23:11:54 +0200 | [diff] [blame] | 1039 | .gettime64 = bfin_ptp_gettime, |
| 1040 | .settime64 = bfin_ptp_settime, |
Richard Cochran | dd87b22 | 2012-10-31 06:27:24 +0000 | [diff] [blame] | 1041 | .enable = bfin_ptp_enable, |
| 1042 | }; |
| 1043 | |
| 1044 | static int bfin_phc_init(struct net_device *netdev, struct device *dev) |
| 1045 | { |
| 1046 | struct bfin_mac_local *lp = netdev_priv(netdev); |
| 1047 | |
| 1048 | lp->caps = bfin_ptp_caps; |
| 1049 | lp->caps.max_adj = lp->max_ppb; |
| 1050 | lp->clock = ptp_clock_register(&lp->caps, dev); |
| 1051 | if (IS_ERR(lp->clock)) |
| 1052 | return PTR_ERR(lp->clock); |
| 1053 | |
| 1054 | lp->phc_index = ptp_clock_index(lp->clock); |
| 1055 | spin_lock_init(&lp->phc_lock); |
| 1056 | |
| 1057 | return 0; |
| 1058 | } |
| 1059 | |
| 1060 | static void bfin_phc_release(struct bfin_mac_local *lp) |
| 1061 | { |
| 1062 | ptp_clock_unregister(lp->clock); |
| 1063 | } |
| 1064 | |
Barry Song | fe92afe | 2010-05-17 17:19:40 -0700 | [diff] [blame] | 1065 | #else |
| 1066 | # define bfin_mac_hwtstamp_is_none(cfg) 0 |
| 1067 | # define bfin_mac_hwtstamp_init(dev) |
Ben Hutchings | 7575c91 | 2013-11-18 22:54:03 +0000 | [diff] [blame] | 1068 | # define bfin_mac_hwtstamp_set(dev, ifr) (-EOPNOTSUPP) |
| 1069 | # define bfin_mac_hwtstamp_get(dev, ifr) (-EOPNOTSUPP) |
Barry Song | fe92afe | 2010-05-17 17:19:40 -0700 | [diff] [blame] | 1070 | # define bfin_rx_hwtstamp(dev, skb) |
| 1071 | # define bfin_tx_hwtstamp(dev, skb) |
Richard Cochran | dd87b22 | 2012-10-31 06:27:24 +0000 | [diff] [blame] | 1072 | # define bfin_phc_init(netdev, dev) 0 |
| 1073 | # define bfin_phc_release(lp) |
Barry Song | fe92afe | 2010-05-17 17:19:40 -0700 | [diff] [blame] | 1074 | #endif |
| 1075 | |
Sonic Zhang | 4fcc3d3 | 2010-06-11 17:44:31 +0800 | [diff] [blame] | 1076 | static inline void _tx_reclaim_skb(void) |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1077 | { |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1078 | do { |
| 1079 | tx_list_head->desc_a.config &= ~DMAEN; |
| 1080 | tx_list_head->status.status_word = 0; |
| 1081 | if (tx_list_head->skb) { |
Eric W. Biederman | 21534d2 | 2014-03-15 15:37:24 -0700 | [diff] [blame] | 1082 | dev_consume_skb_any(tx_list_head->skb); |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1083 | tx_list_head->skb = NULL; |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1084 | } |
| 1085 | tx_list_head = tx_list_head->next; |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1086 | |
Sonic Zhang | 4fcc3d3 | 2010-06-11 17:44:31 +0800 | [diff] [blame] | 1087 | } while (tx_list_head->status.status_word != 0); |
| 1088 | } |
| 1089 | |
| 1090 | static void tx_reclaim_skb(struct bfin_mac_local *lp) |
| 1091 | { |
| 1092 | int timeout_cnt = MAX_TIMEOUT_CNT; |
| 1093 | |
| 1094 | if (tx_list_head->status.status_word != 0) |
| 1095 | _tx_reclaim_skb(); |
| 1096 | |
| 1097 | if (current_tx_ptr->next == tx_list_head) { |
| 1098 | while (tx_list_head->status.status_word == 0) { |
| 1099 | /* slow down polling to avoid too many queue stop. */ |
| 1100 | udelay(10); |
| 1101 | /* reclaim skb if DMA is not running. */ |
| 1102 | if (!(bfin_read_DMA2_IRQ_STATUS() & DMA_RUN)) |
| 1103 | break; |
| 1104 | if (timeout_cnt-- < 0) |
| 1105 | break; |
| 1106 | } |
| 1107 | |
| 1108 | if (timeout_cnt >= 0) |
| 1109 | _tx_reclaim_skb(); |
| 1110 | else |
| 1111 | netif_stop_queue(lp->ndev); |
| 1112 | } |
| 1113 | |
| 1114 | if (current_tx_ptr->next != tx_list_head && |
| 1115 | netif_queue_stopped(lp->ndev)) |
| 1116 | netif_wake_queue(lp->ndev); |
| 1117 | |
| 1118 | if (tx_list_head != current_tx_ptr) { |
| 1119 | /* shorten the timer interval if tx queue is stopped */ |
| 1120 | if (netif_queue_stopped(lp->ndev)) |
| 1121 | lp->tx_reclaim_timer.expires = |
| 1122 | jiffies + (TX_RECLAIM_JIFFIES >> 4); |
| 1123 | else |
| 1124 | lp->tx_reclaim_timer.expires = |
| 1125 | jiffies + TX_RECLAIM_JIFFIES; |
| 1126 | |
| 1127 | mod_timer(&lp->tx_reclaim_timer, |
| 1128 | lp->tx_reclaim_timer.expires); |
| 1129 | } |
| 1130 | |
| 1131 | return; |
| 1132 | } |
| 1133 | |
| 1134 | static void tx_reclaim_skb_timeout(unsigned long lp) |
| 1135 | { |
| 1136 | tx_reclaim_skb((struct bfin_mac_local *)lp); |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1137 | } |
| 1138 | |
Bryan Wu | 7ef0a7e | 2008-04-25 11:53:10 +0800 | [diff] [blame] | 1139 | static int bfin_mac_hard_start_xmit(struct sk_buff *skb, |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1140 | struct net_device *dev) |
| 1141 | { |
Sonic Zhang | 4fcc3d3 | 2010-06-11 17:44:31 +0800 | [diff] [blame] | 1142 | struct bfin_mac_local *lp = netdev_priv(dev); |
Bryan Wu | a50c0c0 | 2008-07-27 22:45:04 +0800 | [diff] [blame] | 1143 | u16 *data; |
Michael Hennerich | 015dac8 | 2009-05-29 03:41:15 +0000 | [diff] [blame] | 1144 | u32 data_align = (unsigned long)(skb->data) & 0x3; |
Barry Song | fe92afe | 2010-05-17 17:19:40 -0700 | [diff] [blame] | 1145 | |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1146 | current_tx_ptr->skb = skb; |
| 1147 | |
Michael Hennerich | 015dac8 | 2009-05-29 03:41:15 +0000 | [diff] [blame] | 1148 | if (data_align == 0x2) { |
| 1149 | /* move skb->data to current_tx_ptr payload */ |
| 1150 | data = (u16 *)(skb->data) - 1; |
Barry Song | fe92afe | 2010-05-17 17:19:40 -0700 | [diff] [blame] | 1151 | *data = (u16)(skb->len); |
| 1152 | /* |
| 1153 | * When transmitting an Ethernet packet, the PTP_TSYNC module requires |
| 1154 | * a DMA_Length_Word field associated with the packet. The lower 12 bits |
| 1155 | * of this field are the length of the packet payload in bytes and the higher |
| 1156 | * 4 bits are the timestamping enable field. |
| 1157 | */ |
Oliver Hartkopp | 2244d07 | 2010-08-17 08:59:14 +0000 | [diff] [blame] | 1158 | if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) |
Barry Song | fe92afe | 2010-05-17 17:19:40 -0700 | [diff] [blame] | 1159 | *data |= 0x1000; |
| 1160 | |
Michael Hennerich | 015dac8 | 2009-05-29 03:41:15 +0000 | [diff] [blame] | 1161 | current_tx_ptr->desc_a.start_addr = (u32)data; |
| 1162 | /* this is important! */ |
| 1163 | blackfin_dcache_flush_range((u32)data, |
| 1164 | (u32)((u8 *)data + skb->len + 4)); |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1165 | } else { |
Michael Hennerich | 015dac8 | 2009-05-29 03:41:15 +0000 | [diff] [blame] | 1166 | *((u16 *)(current_tx_ptr->packet)) = (u16)(skb->len); |
Barry Song | fe92afe | 2010-05-17 17:19:40 -0700 | [diff] [blame] | 1167 | /* enable timestamping for the sent packet */ |
Oliver Hartkopp | 2244d07 | 2010-08-17 08:59:14 +0000 | [diff] [blame] | 1168 | if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) |
Barry Song | fe92afe | 2010-05-17 17:19:40 -0700 | [diff] [blame] | 1169 | *((u16 *)(current_tx_ptr->packet)) |= 0x1000; |
Michael Hennerich | 015dac8 | 2009-05-29 03:41:15 +0000 | [diff] [blame] | 1170 | memcpy((u8 *)(current_tx_ptr->packet + 2), skb->data, |
| 1171 | skb->len); |
| 1172 | current_tx_ptr->desc_a.start_addr = |
| 1173 | (u32)current_tx_ptr->packet; |
Michael Hennerich | 015dac8 | 2009-05-29 03:41:15 +0000 | [diff] [blame] | 1174 | blackfin_dcache_flush_range( |
| 1175 | (u32)current_tx_ptr->packet, |
| 1176 | (u32)(current_tx_ptr->packet + skb->len + 2)); |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1177 | } |
| 1178 | |
Sonic Zhang | 805a8ab | 2009-05-29 03:40:43 +0000 | [diff] [blame] | 1179 | /* make sure the internal data buffers in the core are drained |
| 1180 | * so that the DMA descriptors are completely written when the |
| 1181 | * DMA engine goes to fetch them below |
| 1182 | */ |
| 1183 | SSYNC(); |
| 1184 | |
Sonic Zhang | 4fcc3d3 | 2010-06-11 17:44:31 +0800 | [diff] [blame] | 1185 | /* always clear status buffer before start tx dma */ |
| 1186 | current_tx_ptr->status.status_word = 0; |
| 1187 | |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1188 | /* enable this packet's dma */ |
| 1189 | current_tx_ptr->desc_a.config |= DMAEN; |
| 1190 | |
| 1191 | /* tx dma is running, just return */ |
Michael Hennerich | 015dac8 | 2009-05-29 03:41:15 +0000 | [diff] [blame] | 1192 | if (bfin_read_DMA2_IRQ_STATUS() & DMA_RUN) |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1193 | goto out; |
| 1194 | |
| 1195 | /* tx dma is not running */ |
| 1196 | bfin_write_DMA2_NEXT_DESC_PTR(&(current_tx_ptr->desc_a)); |
| 1197 | /* dma enabled, read from memory, size is 6 */ |
| 1198 | bfin_write_DMA2_CONFIG(current_tx_ptr->desc_a.config); |
| 1199 | /* Turn on the EMAC tx */ |
| 1200 | bfin_write_EMAC_OPMODE(bfin_read_EMAC_OPMODE() | TE); |
| 1201 | |
| 1202 | out: |
Barry Song | fe92afe | 2010-05-17 17:19:40 -0700 | [diff] [blame] | 1203 | bfin_tx_hwtstamp(dev, skb); |
| 1204 | |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1205 | current_tx_ptr = current_tx_ptr->next; |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 1206 | dev->stats.tx_packets++; |
| 1207 | dev->stats.tx_bytes += (skb->len); |
Sonic Zhang | 4fcc3d3 | 2010-06-11 17:44:31 +0800 | [diff] [blame] | 1208 | |
| 1209 | tx_reclaim_skb(lp); |
| 1210 | |
Patrick McHardy | 6ed1065 | 2009-06-23 06:03:08 +0000 | [diff] [blame] | 1211 | return NETDEV_TX_OK; |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1212 | } |
| 1213 | |
Sonic Zhang | ad2864d | 2010-05-10 05:39:09 +0000 | [diff] [blame] | 1214 | #define IP_HEADER_OFF 0 |
Peter Meerwald | ec497b3 | 2010-05-17 17:20:50 -0700 | [diff] [blame] | 1215 | #define RX_ERROR_MASK (RX_LONG | RX_ALIGN | RX_CRC | RX_LEN | \ |
| 1216 | RX_FRAG | RX_ADDR | RX_DMAO | RX_PHY | RX_LATE | RX_RANGE) |
| 1217 | |
Sonic Zhang | 159945a | 2014-07-24 17:52:59 +0800 | [diff] [blame] | 1218 | static void bfin_mac_rx(struct bfin_mac_local *lp) |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1219 | { |
Sonic Zhang | 159945a | 2014-07-24 17:52:59 +0800 | [diff] [blame] | 1220 | struct net_device *dev = lp->ndev; |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1221 | struct sk_buff *skb, *new_skb; |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1222 | unsigned short len; |
Sonic Zhang | ad2864d | 2010-05-10 05:39:09 +0000 | [diff] [blame] | 1223 | #if defined(BFIN_MAC_CSUM_OFFLOAD) |
| 1224 | unsigned int i; |
| 1225 | unsigned char fcs[ETH_FCS_LEN + 1]; |
| 1226 | #endif |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1227 | |
Peter Meerwald | ec497b3 | 2010-05-17 17:20:50 -0700 | [diff] [blame] | 1228 | /* check if frame status word reports an error condition |
| 1229 | * we which case we simply drop the packet |
| 1230 | */ |
| 1231 | if (current_rx_ptr->status.status_word & RX_ERROR_MASK) { |
Mike Frysinger | c6dd509 | 2011-01-10 02:54:29 +0000 | [diff] [blame] | 1232 | netdev_notice(dev, "rx: receive error - packet dropped\n"); |
Peter Meerwald | ec497b3 | 2010-05-17 17:20:50 -0700 | [diff] [blame] | 1233 | dev->stats.rx_dropped++; |
| 1234 | goto out; |
| 1235 | } |
| 1236 | |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1237 | /* allocate a new skb for next time receive */ |
| 1238 | skb = current_rx_ptr->skb; |
Barry Song | fe92afe | 2010-05-17 17:19:40 -0700 | [diff] [blame] | 1239 | |
Pradeep A. Dalvi | 1ab0d2e | 2012-02-06 11:16:48 +0000 | [diff] [blame] | 1240 | new_skb = netdev_alloc_skb(dev, PKT_BUF_SZ + NET_IP_ALIGN); |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1241 | if (!new_skb) { |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 1242 | dev->stats.rx_dropped++; |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1243 | goto out; |
| 1244 | } |
| 1245 | /* reserve 2 bytes for RXDWA padding */ |
Michael Hennerich | 015dac8 | 2009-05-29 03:41:15 +0000 | [diff] [blame] | 1246 | skb_reserve(new_skb, NET_IP_ALIGN); |
Alexey Demin | 6e01d1a | 2008-01-30 16:52:27 +0800 | [diff] [blame] | 1247 | /* Invidate the data cache of skb->data range when it is write back |
| 1248 | * cache. It will prevent overwritting the new data from DMA |
| 1249 | */ |
| 1250 | blackfin_dcache_invalidate_range((unsigned long)new_skb->head, |
| 1251 | (unsigned long)new_skb->end); |
| 1252 | |
Sonic Zhang | f6e1e4f | 2010-05-10 05:39:08 +0000 | [diff] [blame] | 1253 | current_rx_ptr->skb = new_skb; |
| 1254 | current_rx_ptr->desc_a.start_addr = (unsigned long)new_skb->data - 2; |
| 1255 | |
Sonic Zhang | 159945a | 2014-07-24 17:52:59 +0800 | [diff] [blame] | 1256 | len = (unsigned short)(current_rx_ptr->status.status_word & RX_FRLEN); |
Sonic Zhang | ad2864d | 2010-05-10 05:39:09 +0000 | [diff] [blame] | 1257 | /* Deduce Ethernet FCS length from Ethernet payload length */ |
| 1258 | len -= ETH_FCS_LEN; |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1259 | skb_put(skb, len); |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1260 | |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1261 | skb->protocol = eth_type_trans(skb, dev); |
Barry Song | fe92afe | 2010-05-17 17:19:40 -0700 | [diff] [blame] | 1262 | |
| 1263 | bfin_rx_hwtstamp(dev, skb); |
| 1264 | |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1265 | #if defined(BFIN_MAC_CSUM_OFFLOAD) |
Sonic Zhang | ad2864d | 2010-05-10 05:39:09 +0000 | [diff] [blame] | 1266 | /* Checksum offloading only works for IPv4 packets with the standard IP header |
| 1267 | * length of 20 bytes, because the blackfin MAC checksum calculation is |
| 1268 | * based on that assumption. We must NOT use the calculated checksum if our |
| 1269 | * IP version or header break that assumption. |
| 1270 | */ |
| 1271 | if (skb->data[IP_HEADER_OFF] == 0x45) { |
| 1272 | skb->csum = current_rx_ptr->status.ip_payload_csum; |
| 1273 | /* |
| 1274 | * Deduce Ethernet FCS from hardware generated IP payload checksum. |
| 1275 | * IP checksum is based on 16-bit one's complement algorithm. |
| 1276 | * To deduce a value from checksum is equal to add its inversion. |
| 1277 | * If the IP payload len is odd, the inversed FCS should also |
| 1278 | * begin from odd address and leave first byte zero. |
| 1279 | */ |
| 1280 | if (skb->len % 2) { |
| 1281 | fcs[0] = 0; |
| 1282 | for (i = 0; i < ETH_FCS_LEN; i++) |
| 1283 | fcs[i + 1] = ~skb->data[skb->len + i]; |
| 1284 | skb->csum = csum_partial(fcs, ETH_FCS_LEN + 1, skb->csum); |
| 1285 | } else { |
| 1286 | for (i = 0; i < ETH_FCS_LEN; i++) |
| 1287 | fcs[i] = ~skb->data[skb->len + i]; |
| 1288 | skb->csum = csum_partial(fcs, ETH_FCS_LEN, skb->csum); |
| 1289 | } |
| 1290 | skb->ip_summed = CHECKSUM_COMPLETE; |
| 1291 | } |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1292 | #endif |
| 1293 | |
Sonic Zhang | 159945a | 2014-07-24 17:52:59 +0800 | [diff] [blame] | 1294 | napi_gro_receive(&lp->napi, skb); |
| 1295 | |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 1296 | dev->stats.rx_packets++; |
| 1297 | dev->stats.rx_bytes += len; |
Peter Meerwald | ec497b3 | 2010-05-17 17:20:50 -0700 | [diff] [blame] | 1298 | out: |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1299 | current_rx_ptr->status.status_word = 0x00000000; |
| 1300 | current_rx_ptr = current_rx_ptr->next; |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1301 | } |
| 1302 | |
Sonic Zhang | 159945a | 2014-07-24 17:52:59 +0800 | [diff] [blame] | 1303 | static int bfin_mac_poll(struct napi_struct *napi, int budget) |
| 1304 | { |
| 1305 | int i = 0; |
| 1306 | struct bfin_mac_local *lp = container_of(napi, |
| 1307 | struct bfin_mac_local, |
| 1308 | napi); |
| 1309 | |
| 1310 | while (current_rx_ptr->status.status_word != 0 && i < budget) { |
| 1311 | bfin_mac_rx(lp); |
| 1312 | i++; |
| 1313 | } |
| 1314 | |
| 1315 | if (i < budget) { |
| 1316 | napi_complete(napi); |
| 1317 | if (test_and_clear_bit(BFIN_MAC_RX_IRQ_DISABLED, &lp->flags)) |
| 1318 | enable_irq(IRQ_MAC_RX); |
| 1319 | } |
| 1320 | |
| 1321 | return i; |
| 1322 | } |
| 1323 | |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1324 | /* interrupt routine to handle rx and error signal */ |
Bryan Wu | 7ef0a7e | 2008-04-25 11:53:10 +0800 | [diff] [blame] | 1325 | static irqreturn_t bfin_mac_interrupt(int irq, void *dev_id) |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1326 | { |
Sonic Zhang | 159945a | 2014-07-24 17:52:59 +0800 | [diff] [blame] | 1327 | struct bfin_mac_local *lp = netdev_priv(dev_id); |
| 1328 | u32 status; |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1329 | |
Sonic Zhang | 159945a | 2014-07-24 17:52:59 +0800 | [diff] [blame] | 1330 | status = bfin_read_DMA1_IRQ_STATUS(); |
| 1331 | |
| 1332 | bfin_write_DMA1_IRQ_STATUS(status | DMA_DONE | DMA_ERR); |
| 1333 | if (status & DMA_DONE) { |
| 1334 | disable_irq_nosync(IRQ_MAC_RX); |
| 1335 | set_bit(BFIN_MAC_RX_IRQ_DISABLED, &lp->flags); |
| 1336 | napi_schedule(&lp->napi); |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1337 | } |
| 1338 | |
Sonic Zhang | 159945a | 2014-07-24 17:52:59 +0800 | [diff] [blame] | 1339 | return IRQ_HANDLED; |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1340 | } |
| 1341 | |
| 1342 | #ifdef CONFIG_NET_POLL_CONTROLLER |
Sonic Zhang | 159945a | 2014-07-24 17:52:59 +0800 | [diff] [blame] | 1343 | static void bfin_mac_poll_controller(struct net_device *dev) |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1344 | { |
Sonic Zhang | 4fcc3d3 | 2010-06-11 17:44:31 +0800 | [diff] [blame] | 1345 | struct bfin_mac_local *lp = netdev_priv(dev); |
| 1346 | |
Bryan Wu | 7ef0a7e | 2008-04-25 11:53:10 +0800 | [diff] [blame] | 1347 | bfin_mac_interrupt(IRQ_MAC_RX, dev); |
Sonic Zhang | 4fcc3d3 | 2010-06-11 17:44:31 +0800 | [diff] [blame] | 1348 | tx_reclaim_skb(lp); |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1349 | } |
| 1350 | #endif /* CONFIG_NET_POLL_CONTROLLER */ |
| 1351 | |
Bryan Wu | 7ef0a7e | 2008-04-25 11:53:10 +0800 | [diff] [blame] | 1352 | static void bfin_mac_disable(void) |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1353 | { |
| 1354 | unsigned int opmode; |
| 1355 | |
| 1356 | opmode = bfin_read_EMAC_OPMODE(); |
| 1357 | opmode &= (~RE); |
| 1358 | opmode &= (~TE); |
| 1359 | /* Turn off the EMAC */ |
| 1360 | bfin_write_EMAC_OPMODE(opmode); |
| 1361 | } |
| 1362 | |
| 1363 | /* |
| 1364 | * Enable Interrupts, Receive, and Transmit |
| 1365 | */ |
Sonic Zhang | 02460d0 | 2010-06-11 10:44:22 +0000 | [diff] [blame] | 1366 | static int bfin_mac_enable(struct phy_device *phydev) |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1367 | { |
Mike Frysinger | 2bfa0f0 | 2010-05-10 05:39:13 +0000 | [diff] [blame] | 1368 | int ret; |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1369 | u32 opmode; |
| 1370 | |
Mike Frysinger | c6dd509 | 2011-01-10 02:54:29 +0000 | [diff] [blame] | 1371 | pr_debug("%s\n", __func__); |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1372 | |
| 1373 | /* Set RX DMA */ |
| 1374 | bfin_write_DMA1_NEXT_DESC_PTR(&(rx_list_head->desc_a)); |
| 1375 | bfin_write_DMA1_CONFIG(rx_list_head->desc_a.config); |
| 1376 | |
| 1377 | /* Wait MII done */ |
Mike Frysinger | 2bfa0f0 | 2010-05-10 05:39:13 +0000 | [diff] [blame] | 1378 | ret = bfin_mdio_poll(); |
| 1379 | if (ret) |
| 1380 | return ret; |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1381 | |
| 1382 | /* We enable only RX here */ |
| 1383 | /* ASTP : Enable Automatic Pad Stripping |
| 1384 | PR : Promiscuous Mode for test |
| 1385 | PSF : Receive frames with total length less than 64 bytes. |
| 1386 | FDMODE : Full Duplex Mode |
| 1387 | LB : Internal Loopback for test |
| 1388 | RE : Receiver Enable */ |
| 1389 | opmode = bfin_read_EMAC_OPMODE(); |
| 1390 | if (opmode & FDMODE) |
| 1391 | opmode |= PSF; |
| 1392 | else |
| 1393 | opmode |= DRO | DC | PSF; |
| 1394 | opmode |= RE; |
| 1395 | |
Sonic Zhang | 02460d0 | 2010-06-11 10:44:22 +0000 | [diff] [blame] | 1396 | if (phydev->interface == PHY_INTERFACE_MODE_RMII) { |
| 1397 | opmode |= RMII; /* For Now only 100MBit are supported */ |
Mike Frysinger | 72f4905 | 2011-03-27 22:33:13 +0000 | [diff] [blame] | 1398 | #if defined(CONFIG_BF537) || defined(CONFIG_BF536) |
| 1399 | if (__SILICON_REVISION__ < 3) { |
| 1400 | /* |
| 1401 | * This isn't publicly documented (fun times!), but in |
| 1402 | * silicon <=0.2, the RX and TX pins are clocked together. |
| 1403 | * So in order to recv, we must enable the transmit side |
| 1404 | * as well. This will cause a spurious TX interrupt too, |
| 1405 | * but we can easily consume that. |
| 1406 | */ |
| 1407 | opmode |= TE; |
| 1408 | } |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1409 | #endif |
Sonic Zhang | 02460d0 | 2010-06-11 10:44:22 +0000 | [diff] [blame] | 1410 | } |
| 1411 | |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1412 | /* Turn on the EMAC rx */ |
| 1413 | bfin_write_EMAC_OPMODE(opmode); |
Mike Frysinger | 2bfa0f0 | 2010-05-10 05:39:13 +0000 | [diff] [blame] | 1414 | |
| 1415 | return 0; |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1416 | } |
| 1417 | |
| 1418 | /* Our watchdog timed out. Called by the networking layer */ |
Bryan Wu | 7ef0a7e | 2008-04-25 11:53:10 +0800 | [diff] [blame] | 1419 | static void bfin_mac_timeout(struct net_device *dev) |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1420 | { |
Sonic Zhang | 4fcc3d3 | 2010-06-11 17:44:31 +0800 | [diff] [blame] | 1421 | struct bfin_mac_local *lp = netdev_priv(dev); |
| 1422 | |
Harvey Harrison | b39d66a | 2008-08-20 16:52:04 -0700 | [diff] [blame] | 1423 | pr_debug("%s: %s\n", dev->name, __func__); |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1424 | |
Bryan Wu | 7ef0a7e | 2008-04-25 11:53:10 +0800 | [diff] [blame] | 1425 | bfin_mac_disable(); |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1426 | |
Sonic Zhang | 4fcc3d3 | 2010-06-11 17:44:31 +0800 | [diff] [blame] | 1427 | del_timer(&lp->tx_reclaim_timer); |
| 1428 | |
| 1429 | /* reset tx queue and free skb */ |
| 1430 | while (tx_list_head != current_tx_ptr) { |
| 1431 | tx_list_head->desc_a.config &= ~DMAEN; |
| 1432 | tx_list_head->status.status_word = 0; |
| 1433 | if (tx_list_head->skb) { |
| 1434 | dev_kfree_skb(tx_list_head->skb); |
| 1435 | tx_list_head->skb = NULL; |
| 1436 | } |
| 1437 | tx_list_head = tx_list_head->next; |
| 1438 | } |
| 1439 | |
Sonic Zhang | 159945a | 2014-07-24 17:52:59 +0800 | [diff] [blame] | 1440 | if (netif_queue_stopped(dev)) |
| 1441 | netif_wake_queue(dev); |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1442 | |
Sonic Zhang | 02460d0 | 2010-06-11 10:44:22 +0000 | [diff] [blame] | 1443 | bfin_mac_enable(lp->phydev); |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1444 | |
| 1445 | /* We can accept TX packets again */ |
Eric Dumazet | 1ae5dc3 | 2010-05-10 05:01:31 -0700 | [diff] [blame] | 1446 | dev->trans_start = jiffies; /* prevent tx timeout */ |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1447 | } |
| 1448 | |
Bryan Wu | 7ef0a7e | 2008-04-25 11:53:10 +0800 | [diff] [blame] | 1449 | static void bfin_mac_multicast_hash(struct net_device *dev) |
Aidan Williams | 775919b | 2008-01-30 16:52:23 +0800 | [diff] [blame] | 1450 | { |
| 1451 | u32 emac_hashhi, emac_hashlo; |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 1452 | struct netdev_hw_addr *ha; |
Aidan Williams | 775919b | 2008-01-30 16:52:23 +0800 | [diff] [blame] | 1453 | u32 crc; |
| 1454 | |
| 1455 | emac_hashhi = emac_hashlo = 0; |
| 1456 | |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 1457 | netdev_for_each_mc_addr(ha, dev) { |
Joe Perches | f767b6d | 2011-01-12 18:08:04 +0000 | [diff] [blame] | 1458 | crc = ether_crc(ETH_ALEN, ha->addr); |
Aidan Williams | 775919b | 2008-01-30 16:52:23 +0800 | [diff] [blame] | 1459 | crc >>= 26; |
| 1460 | |
| 1461 | if (crc & 0x20) |
| 1462 | emac_hashhi |= 1 << (crc & 0x1f); |
| 1463 | else |
| 1464 | emac_hashlo |= 1 << (crc & 0x1f); |
| 1465 | } |
| 1466 | |
| 1467 | bfin_write_EMAC_HASHHI(emac_hashhi); |
| 1468 | bfin_write_EMAC_HASHLO(emac_hashlo); |
Aidan Williams | 775919b | 2008-01-30 16:52:23 +0800 | [diff] [blame] | 1469 | } |
| 1470 | |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1471 | /* |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1472 | * This routine will, depending on the values passed to it, |
| 1473 | * either make it accept multicast packets, go into |
| 1474 | * promiscuous mode (for TCPDUMP and cousins) or accept |
| 1475 | * a select set of multicast packets |
| 1476 | */ |
Bryan Wu | 7ef0a7e | 2008-04-25 11:53:10 +0800 | [diff] [blame] | 1477 | static void bfin_mac_set_multicast_list(struct net_device *dev) |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1478 | { |
| 1479 | u32 sysctl; |
| 1480 | |
| 1481 | if (dev->flags & IFF_PROMISC) { |
Mike Frysinger | c6dd509 | 2011-01-10 02:54:29 +0000 | [diff] [blame] | 1482 | netdev_info(dev, "set promisc mode\n"); |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1483 | sysctl = bfin_read_EMAC_OPMODE(); |
Sonic Zhang | c0da776 | 2010-05-10 05:39:12 +0000 | [diff] [blame] | 1484 | sysctl |= PR; |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1485 | bfin_write_EMAC_OPMODE(sysctl); |
Aidan Williams | 775919b | 2008-01-30 16:52:23 +0800 | [diff] [blame] | 1486 | } else if (dev->flags & IFF_ALLMULTI) { |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1487 | /* accept all multicast */ |
| 1488 | sysctl = bfin_read_EMAC_OPMODE(); |
| 1489 | sysctl |= PAM; |
| 1490 | bfin_write_EMAC_OPMODE(sysctl); |
Jiri Pirko | 4cd24ea | 2010-02-08 04:30:35 +0000 | [diff] [blame] | 1491 | } else if (!netdev_mc_empty(dev)) { |
Aidan Williams | 775919b | 2008-01-30 16:52:23 +0800 | [diff] [blame] | 1492 | /* set up multicast hash table */ |
| 1493 | sysctl = bfin_read_EMAC_OPMODE(); |
| 1494 | sysctl |= HM; |
| 1495 | bfin_write_EMAC_OPMODE(sysctl); |
Bryan Wu | 7ef0a7e | 2008-04-25 11:53:10 +0800 | [diff] [blame] | 1496 | bfin_mac_multicast_hash(dev); |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1497 | } else { |
| 1498 | /* clear promisc or multicast mode */ |
| 1499 | sysctl = bfin_read_EMAC_OPMODE(); |
| 1500 | sysctl &= ~(RAF | PAM); |
| 1501 | bfin_write_EMAC_OPMODE(sysctl); |
| 1502 | } |
| 1503 | } |
| 1504 | |
Barry Song | fe92afe | 2010-05-17 17:19:40 -0700 | [diff] [blame] | 1505 | static int bfin_mac_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) |
| 1506 | { |
Sonic Zhang | 02460d0 | 2010-06-11 10:44:22 +0000 | [diff] [blame] | 1507 | struct bfin_mac_local *lp = netdev_priv(netdev); |
| 1508 | |
| 1509 | if (!netif_running(netdev)) |
| 1510 | return -EINVAL; |
| 1511 | |
Barry Song | fe92afe | 2010-05-17 17:19:40 -0700 | [diff] [blame] | 1512 | switch (cmd) { |
| 1513 | case SIOCSHWTSTAMP: |
Ben Hutchings | 7575c91 | 2013-11-18 22:54:03 +0000 | [diff] [blame] | 1514 | return bfin_mac_hwtstamp_set(netdev, ifr); |
| 1515 | case SIOCGHWTSTAMP: |
| 1516 | return bfin_mac_hwtstamp_get(netdev, ifr); |
Barry Song | fe92afe | 2010-05-17 17:19:40 -0700 | [diff] [blame] | 1517 | default: |
Sonic Zhang | 02460d0 | 2010-06-11 10:44:22 +0000 | [diff] [blame] | 1518 | if (lp->phydev) |
| 1519 | return phy_mii_ioctl(lp->phydev, ifr, cmd); |
| 1520 | else |
| 1521 | return -EOPNOTSUPP; |
Barry Song | fe92afe | 2010-05-17 17:19:40 -0700 | [diff] [blame] | 1522 | } |
| 1523 | } |
| 1524 | |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1525 | /* |
| 1526 | * this puts the device in an inactive state |
| 1527 | */ |
Bryan Wu | 7ef0a7e | 2008-04-25 11:53:10 +0800 | [diff] [blame] | 1528 | static void bfin_mac_shutdown(struct net_device *dev) |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1529 | { |
| 1530 | /* Turn off the EMAC */ |
| 1531 | bfin_write_EMAC_OPMODE(0x00000000); |
| 1532 | /* Turn off the EMAC RX DMA */ |
| 1533 | bfin_write_DMA1_CONFIG(0x0000); |
| 1534 | bfin_write_DMA2_CONFIG(0x0000); |
| 1535 | } |
| 1536 | |
| 1537 | /* |
| 1538 | * Open and Initialize the interface |
| 1539 | * |
| 1540 | * Set up everything, reset the card, etc.. |
| 1541 | */ |
Bryan Wu | 7ef0a7e | 2008-04-25 11:53:10 +0800 | [diff] [blame] | 1542 | static int bfin_mac_open(struct net_device *dev) |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1543 | { |
Bryan Wu | 7ef0a7e | 2008-04-25 11:53:10 +0800 | [diff] [blame] | 1544 | struct bfin_mac_local *lp = netdev_priv(dev); |
Mike Frysinger | 2bfa0f0 | 2010-05-10 05:39:13 +0000 | [diff] [blame] | 1545 | int ret; |
Harvey Harrison | b39d66a | 2008-08-20 16:52:04 -0700 | [diff] [blame] | 1546 | pr_debug("%s: %s\n", dev->name, __func__); |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1547 | |
| 1548 | /* |
| 1549 | * Check that the address is valid. If its not, refuse |
| 1550 | * to bring the device up. The user must specify an |
| 1551 | * address using ifconfig eth0 hw ether xx:xx:xx:xx:xx:xx |
| 1552 | */ |
| 1553 | if (!is_valid_ether_addr(dev->dev_addr)) { |
Mike Frysinger | c6dd509 | 2011-01-10 02:54:29 +0000 | [diff] [blame] | 1554 | netdev_warn(dev, "no valid ethernet hw addr\n"); |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1555 | return -EINVAL; |
| 1556 | } |
| 1557 | |
| 1558 | /* initial rx and tx list */ |
Pradeep A. Dalvi | 1ab0d2e | 2012-02-06 11:16:48 +0000 | [diff] [blame] | 1559 | ret = desc_list_init(dev); |
Mike Frysinger | 2bfa0f0 | 2010-05-10 05:39:13 +0000 | [diff] [blame] | 1560 | if (ret) |
| 1561 | return ret; |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1562 | |
Bryan Wu | 4ae5a3a | 2007-09-19 23:37:36 +0800 | [diff] [blame] | 1563 | phy_start(lp->phydev); |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1564 | setup_system_regs(dev); |
Michael Hennerich | ee02fee | 2008-07-27 22:45:05 +0800 | [diff] [blame] | 1565 | setup_mac_addr(dev->dev_addr); |
Mike Frysinger | 2bfa0f0 | 2010-05-10 05:39:13 +0000 | [diff] [blame] | 1566 | |
Bryan Wu | 7ef0a7e | 2008-04-25 11:53:10 +0800 | [diff] [blame] | 1567 | bfin_mac_disable(); |
Sonic Zhang | 02460d0 | 2010-06-11 10:44:22 +0000 | [diff] [blame] | 1568 | ret = bfin_mac_enable(lp->phydev); |
Mike Frysinger | 2bfa0f0 | 2010-05-10 05:39:13 +0000 | [diff] [blame] | 1569 | if (ret) |
| 1570 | return ret; |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1571 | pr_debug("hardware init finished\n"); |
Mike Frysinger | 2bfa0f0 | 2010-05-10 05:39:13 +0000 | [diff] [blame] | 1572 | |
Sonic Zhang | 159945a | 2014-07-24 17:52:59 +0800 | [diff] [blame] | 1573 | napi_enable(&lp->napi); |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1574 | netif_start_queue(dev); |
| 1575 | netif_carrier_on(dev); |
| 1576 | |
| 1577 | return 0; |
| 1578 | } |
| 1579 | |
| 1580 | /* |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1581 | * this makes the board clean up everything that it can |
| 1582 | * and not talk to the outside world. Caused by |
| 1583 | * an 'ifconfig ethX down' |
| 1584 | */ |
Bryan Wu | 7ef0a7e | 2008-04-25 11:53:10 +0800 | [diff] [blame] | 1585 | static int bfin_mac_close(struct net_device *dev) |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1586 | { |
Bryan Wu | 7ef0a7e | 2008-04-25 11:53:10 +0800 | [diff] [blame] | 1587 | struct bfin_mac_local *lp = netdev_priv(dev); |
Harvey Harrison | b39d66a | 2008-08-20 16:52:04 -0700 | [diff] [blame] | 1588 | pr_debug("%s: %s\n", dev->name, __func__); |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1589 | |
| 1590 | netif_stop_queue(dev); |
Sonic Zhang | 159945a | 2014-07-24 17:52:59 +0800 | [diff] [blame] | 1591 | napi_disable(&lp->napi); |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1592 | netif_carrier_off(dev); |
| 1593 | |
Bryan Wu | 4ae5a3a | 2007-09-19 23:37:36 +0800 | [diff] [blame] | 1594 | phy_stop(lp->phydev); |
Vitja Makarov | 136492b | 2008-01-30 16:52:26 +0800 | [diff] [blame] | 1595 | phy_write(lp->phydev, MII_BMCR, BMCR_PDOWN); |
Bryan Wu | 4ae5a3a | 2007-09-19 23:37:36 +0800 | [diff] [blame] | 1596 | |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1597 | /* clear everything */ |
Bryan Wu | 7ef0a7e | 2008-04-25 11:53:10 +0800 | [diff] [blame] | 1598 | bfin_mac_shutdown(dev); |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1599 | |
| 1600 | /* free the rx/tx buffers */ |
| 1601 | desc_list_free(); |
| 1602 | |
| 1603 | return 0; |
| 1604 | } |
| 1605 | |
Mike Frysinger | b63dc8f | 2009-05-26 20:55:33 -0700 | [diff] [blame] | 1606 | static const struct net_device_ops bfin_mac_netdev_ops = { |
| 1607 | .ndo_open = bfin_mac_open, |
| 1608 | .ndo_stop = bfin_mac_close, |
| 1609 | .ndo_start_xmit = bfin_mac_hard_start_xmit, |
| 1610 | .ndo_set_mac_address = bfin_mac_set_mac_address, |
| 1611 | .ndo_tx_timeout = bfin_mac_timeout, |
Jiri Pirko | afc4b13 | 2011-08-16 06:29:01 +0000 | [diff] [blame] | 1612 | .ndo_set_rx_mode = bfin_mac_set_multicast_list, |
Barry Song | fe92afe | 2010-05-17 17:19:40 -0700 | [diff] [blame] | 1613 | .ndo_do_ioctl = bfin_mac_ioctl, |
Mike Frysinger | b63dc8f | 2009-05-26 20:55:33 -0700 | [diff] [blame] | 1614 | .ndo_validate_addr = eth_validate_addr, |
| 1615 | .ndo_change_mtu = eth_change_mtu, |
| 1616 | #ifdef CONFIG_NET_POLL_CONTROLLER |
Sonic Zhang | 159945a | 2014-07-24 17:52:59 +0800 | [diff] [blame] | 1617 | .ndo_poll_controller = bfin_mac_poll_controller, |
Mike Frysinger | b63dc8f | 2009-05-26 20:55:33 -0700 | [diff] [blame] | 1618 | #endif |
| 1619 | }; |
| 1620 | |
Bill Pemberton | 49f7315 | 2012-12-03 09:22:54 -0500 | [diff] [blame] | 1621 | static int bfin_mac_probe(struct platform_device *pdev) |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1622 | { |
Bryan Wu | 7ef0a7e | 2008-04-25 11:53:10 +0800 | [diff] [blame] | 1623 | struct net_device *ndev; |
| 1624 | struct bfin_mac_local *lp; |
Graf Yang | 080c825 | 2009-05-29 03:41:48 +0000 | [diff] [blame] | 1625 | struct platform_device *pd; |
Sonic Zhang | 02460d0 | 2010-06-11 10:44:22 +0000 | [diff] [blame] | 1626 | struct bfin_mii_bus_platform_data *mii_bus_data; |
Graf Yang | 080c825 | 2009-05-29 03:41:48 +0000 | [diff] [blame] | 1627 | int rc; |
Bryan Wu | 7ef0a7e | 2008-04-25 11:53:10 +0800 | [diff] [blame] | 1628 | |
| 1629 | ndev = alloc_etherdev(sizeof(struct bfin_mac_local)); |
Joe Perches | 41de8d4 | 2012-01-29 13:47:52 +0000 | [diff] [blame] | 1630 | if (!ndev) |
Bryan Wu | 7ef0a7e | 2008-04-25 11:53:10 +0800 | [diff] [blame] | 1631 | return -ENOMEM; |
Bryan Wu | 7ef0a7e | 2008-04-25 11:53:10 +0800 | [diff] [blame] | 1632 | |
| 1633 | SET_NETDEV_DEV(ndev, &pdev->dev); |
| 1634 | platform_set_drvdata(pdev, ndev); |
| 1635 | lp = netdev_priv(ndev); |
Sonic Zhang | 4fcc3d3 | 2010-06-11 17:44:31 +0800 | [diff] [blame] | 1636 | lp->ndev = ndev; |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1637 | |
| 1638 | /* Grab the MAC address in the MAC */ |
Bryan Wu | 7ef0a7e | 2008-04-25 11:53:10 +0800 | [diff] [blame] | 1639 | *(__le32 *) (&(ndev->dev_addr[0])) = cpu_to_le32(bfin_read_EMAC_ADDRLO()); |
| 1640 | *(__le16 *) (&(ndev->dev_addr[4])) = cpu_to_le16((u16) bfin_read_EMAC_ADDRHI()); |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1641 | |
| 1642 | /* probe mac */ |
| 1643 | /*todo: how to proble? which is revision_register */ |
| 1644 | bfin_write_EMAC_ADDRLO(0x12345678); |
| 1645 | if (bfin_read_EMAC_ADDRLO() != 0x12345678) { |
Bryan Wu | 7ef0a7e | 2008-04-25 11:53:10 +0800 | [diff] [blame] | 1646 | dev_err(&pdev->dev, "Cannot detect Blackfin on-chip ethernet MAC controller!\n"); |
| 1647 | rc = -ENODEV; |
| 1648 | goto out_err_probe_mac; |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1649 | } |
| 1650 | |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1651 | |
Bryan Wu | 7ef0a7e | 2008-04-25 11:53:10 +0800 | [diff] [blame] | 1652 | /* |
| 1653 | * Is it valid? (Did bootloader initialize it?) |
| 1654 | * Grab the MAC from the board somehow |
| 1655 | * this is done in the arch/blackfin/mach-bfxxx/boards/eth_mac.c |
| 1656 | */ |
Danny Kukawka | 5055d2f | 2012-02-16 07:09:31 +0000 | [diff] [blame] | 1657 | if (!is_valid_ether_addr(ndev->dev_addr)) { |
| 1658 | if (bfin_get_ether_addr(ndev->dev_addr) || |
| 1659 | !is_valid_ether_addr(ndev->dev_addr)) { |
| 1660 | /* Still not valid, get a random one */ |
| 1661 | netdev_warn(ndev, "Setting Ethernet MAC to a random one\n"); |
| 1662 | eth_hw_addr_random(ndev); |
| 1663 | } |
| 1664 | } |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1665 | |
Bryan Wu | 7ef0a7e | 2008-04-25 11:53:10 +0800 | [diff] [blame] | 1666 | setup_mac_addr(ndev->dev_addr); |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1667 | |
Jingoo Han | a63b82c | 2013-08-30 13:50:48 +0900 | [diff] [blame] | 1668 | if (!dev_get_platdata(&pdev->dev)) { |
Graf Yang | 080c825 | 2009-05-29 03:41:48 +0000 | [diff] [blame] | 1669 | dev_err(&pdev->dev, "Cannot get platform device bfin_mii_bus!\n"); |
| 1670 | rc = -ENODEV; |
| 1671 | goto out_err_probe_mac; |
Bryan Wu | 7ef0a7e | 2008-04-25 11:53:10 +0800 | [diff] [blame] | 1672 | } |
Jingoo Han | a63b82c | 2013-08-30 13:50:48 +0900 | [diff] [blame] | 1673 | pd = dev_get_platdata(&pdev->dev); |
Graf Yang | 080c825 | 2009-05-29 03:41:48 +0000 | [diff] [blame] | 1674 | lp->mii_bus = platform_get_drvdata(pd); |
Sonic Zhang | 0e995cd | 2010-05-10 05:39:14 +0000 | [diff] [blame] | 1675 | if (!lp->mii_bus) { |
| 1676 | dev_err(&pdev->dev, "Cannot get mii_bus!\n"); |
| 1677 | rc = -ENODEV; |
Sonic Zhang | 02460d0 | 2010-06-11 10:44:22 +0000 | [diff] [blame] | 1678 | goto out_err_probe_mac; |
Sonic Zhang | 0e995cd | 2010-05-10 05:39:14 +0000 | [diff] [blame] | 1679 | } |
Graf Yang | 080c825 | 2009-05-29 03:41:48 +0000 | [diff] [blame] | 1680 | lp->mii_bus->priv = ndev; |
Jingoo Han | a63b82c | 2013-08-30 13:50:48 +0900 | [diff] [blame] | 1681 | mii_bus_data = dev_get_platdata(&pd->dev); |
Bryan Wu | 4ae5a3a | 2007-09-19 23:37:36 +0800 | [diff] [blame] | 1682 | |
Sonic Zhang | 02460d0 | 2010-06-11 10:44:22 +0000 | [diff] [blame] | 1683 | rc = mii_probe(ndev, mii_bus_data->phy_mode); |
Bryan Wu | 7ef0a7e | 2008-04-25 11:53:10 +0800 | [diff] [blame] | 1684 | if (rc) { |
| 1685 | dev_err(&pdev->dev, "MII Probe failed!\n"); |
| 1686 | goto out_err_mii_probe; |
| 1687 | } |
Bryan Wu | 4ae5a3a | 2007-09-19 23:37:36 +0800 | [diff] [blame] | 1688 | |
Mike Frysinger | c599bd6 | 2011-01-10 02:54:32 +0000 | [diff] [blame] | 1689 | lp->vlan1_mask = ETH_P_8021Q | mii_bus_data->vlan1_mask; |
| 1690 | lp->vlan2_mask = ETH_P_8021Q | mii_bus_data->vlan2_mask; |
| 1691 | |
Alexander Beregalov | 149da65 | 2009-04-14 18:30:24 +0000 | [diff] [blame] | 1692 | ndev->netdev_ops = &bfin_mac_netdev_ops; |
Bryan Wu | 679dce3 | 2008-04-25 11:53:11 +0800 | [diff] [blame] | 1693 | ndev->ethtool_ops = &bfin_mac_ethtool_ops; |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1694 | |
Sonic Zhang | 4fcc3d3 | 2010-06-11 17:44:31 +0800 | [diff] [blame] | 1695 | init_timer(&lp->tx_reclaim_timer); |
| 1696 | lp->tx_reclaim_timer.data = (unsigned long)lp; |
| 1697 | lp->tx_reclaim_timer.function = tx_reclaim_skb_timeout; |
| 1698 | |
Sonic Zhang | 159945a | 2014-07-24 17:52:59 +0800 | [diff] [blame] | 1699 | lp->flags = 0; |
| 1700 | netif_napi_add(ndev, &lp->napi, bfin_mac_poll, CONFIG_BFIN_RX_DESC_NUM); |
| 1701 | |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1702 | spin_lock_init(&lp->lock); |
| 1703 | |
| 1704 | /* now, enable interrupts */ |
| 1705 | /* register irq handler */ |
Bryan Wu | 7ef0a7e | 2008-04-25 11:53:10 +0800 | [diff] [blame] | 1706 | rc = request_irq(IRQ_MAC_RX, bfin_mac_interrupt, |
Michael Opdenacker | 63aca0f | 2013-09-12 05:35:43 +0200 | [diff] [blame] | 1707 | 0, "EMAC_RX", ndev); |
Bryan Wu | 7ef0a7e | 2008-04-25 11:53:10 +0800 | [diff] [blame] | 1708 | if (rc) { |
| 1709 | dev_err(&pdev->dev, "Cannot request Blackfin MAC RX IRQ!\n"); |
| 1710 | rc = -EBUSY; |
| 1711 | goto out_err_request_irq; |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1712 | } |
| 1713 | |
Bryan Wu | 7ef0a7e | 2008-04-25 11:53:10 +0800 | [diff] [blame] | 1714 | rc = register_netdev(ndev); |
| 1715 | if (rc) { |
| 1716 | dev_err(&pdev->dev, "Cannot register net device!\n"); |
| 1717 | goto out_err_reg_ndev; |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1718 | } |
| 1719 | |
Barry Song | fe92afe | 2010-05-17 17:19:40 -0700 | [diff] [blame] | 1720 | bfin_mac_hwtstamp_init(ndev); |
Wei Yongjun | 2c00699 | 2013-05-07 02:23:38 +0000 | [diff] [blame] | 1721 | rc = bfin_phc_init(ndev, &pdev->dev); |
| 1722 | if (rc) { |
Richard Cochran | dd87b22 | 2012-10-31 06:27:24 +0000 | [diff] [blame] | 1723 | dev_err(&pdev->dev, "Cannot register PHC device!\n"); |
| 1724 | goto out_err_phc; |
| 1725 | } |
Barry Song | fe92afe | 2010-05-17 17:19:40 -0700 | [diff] [blame] | 1726 | |
Bryan Wu | 7ef0a7e | 2008-04-25 11:53:10 +0800 | [diff] [blame] | 1727 | /* now, print out the card info, in a short format.. */ |
Mike Frysinger | c6dd509 | 2011-01-10 02:54:29 +0000 | [diff] [blame] | 1728 | netdev_info(ndev, "%s, Version %s\n", DRV_DESC, DRV_VERSION); |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1729 | |
| 1730 | return 0; |
Bryan Wu | 7ef0a7e | 2008-04-25 11:53:10 +0800 | [diff] [blame] | 1731 | |
Richard Cochran | dd87b22 | 2012-10-31 06:27:24 +0000 | [diff] [blame] | 1732 | out_err_phc: |
Bryan Wu | 7ef0a7e | 2008-04-25 11:53:10 +0800 | [diff] [blame] | 1733 | out_err_reg_ndev: |
| 1734 | free_irq(IRQ_MAC_RX, ndev); |
| 1735 | out_err_request_irq: |
Sonic Zhang | 159945a | 2014-07-24 17:52:59 +0800 | [diff] [blame] | 1736 | netif_napi_del(&lp->napi); |
Bryan Wu | 7ef0a7e | 2008-04-25 11:53:10 +0800 | [diff] [blame] | 1737 | out_err_mii_probe: |
Lennert Buytenhek | 298cf9be | 2008-10-08 16:29:57 -0700 | [diff] [blame] | 1738 | mdiobus_unregister(lp->mii_bus); |
Lennert Buytenhek | 298cf9be | 2008-10-08 16:29:57 -0700 | [diff] [blame] | 1739 | mdiobus_free(lp->mii_bus); |
Bryan Wu | 7ef0a7e | 2008-04-25 11:53:10 +0800 | [diff] [blame] | 1740 | out_err_probe_mac: |
Bryan Wu | 7ef0a7e | 2008-04-25 11:53:10 +0800 | [diff] [blame] | 1741 | free_netdev(ndev); |
| 1742 | |
| 1743 | return rc; |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1744 | } |
| 1745 | |
Bill Pemberton | 49f7315 | 2012-12-03 09:22:54 -0500 | [diff] [blame] | 1746 | static int bfin_mac_remove(struct platform_device *pdev) |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1747 | { |
| 1748 | struct net_device *ndev = platform_get_drvdata(pdev); |
Bryan Wu | 7ef0a7e | 2008-04-25 11:53:10 +0800 | [diff] [blame] | 1749 | struct bfin_mac_local *lp = netdev_priv(ndev); |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1750 | |
Richard Cochran | dd87b22 | 2012-10-31 06:27:24 +0000 | [diff] [blame] | 1751 | bfin_phc_release(lp); |
| 1752 | |
Graf Yang | 080c825 | 2009-05-29 03:41:48 +0000 | [diff] [blame] | 1753 | lp->mii_bus->priv = NULL; |
Bryan Wu | 7ef0a7e | 2008-04-25 11:53:10 +0800 | [diff] [blame] | 1754 | |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1755 | unregister_netdev(ndev); |
| 1756 | |
Sonic Zhang | 159945a | 2014-07-24 17:52:59 +0800 | [diff] [blame] | 1757 | netif_napi_del(&lp->napi); |
| 1758 | |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1759 | free_irq(IRQ_MAC_RX, ndev); |
| 1760 | |
| 1761 | free_netdev(ndev); |
| 1762 | |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1763 | return 0; |
| 1764 | } |
| 1765 | |
Bryan Wu | 496a34c | 2007-09-19 23:37:14 +0800 | [diff] [blame] | 1766 | #ifdef CONFIG_PM |
| 1767 | static int bfin_mac_suspend(struct platform_device *pdev, pm_message_t mesg) |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1768 | { |
Bryan Wu | 496a34c | 2007-09-19 23:37:14 +0800 | [diff] [blame] | 1769 | struct net_device *net_dev = platform_get_drvdata(pdev); |
Michael Hennerich | 53fd3f2 | 2010-05-10 05:39:11 +0000 | [diff] [blame] | 1770 | struct bfin_mac_local *lp = netdev_priv(net_dev); |
Bryan Wu | 496a34c | 2007-09-19 23:37:14 +0800 | [diff] [blame] | 1771 | |
Michael Hennerich | 53fd3f2 | 2010-05-10 05:39:11 +0000 | [diff] [blame] | 1772 | if (lp->wol) { |
| 1773 | bfin_write_EMAC_OPMODE((bfin_read_EMAC_OPMODE() & ~TE) | RE); |
| 1774 | bfin_write_EMAC_WKUP_CTL(MPKE); |
| 1775 | enable_irq_wake(IRQ_MAC_WAKEDET); |
| 1776 | } else { |
| 1777 | if (netif_running(net_dev)) |
| 1778 | bfin_mac_close(net_dev); |
| 1779 | } |
Bryan Wu | 496a34c | 2007-09-19 23:37:14 +0800 | [diff] [blame] | 1780 | |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1781 | return 0; |
| 1782 | } |
| 1783 | |
| 1784 | static int bfin_mac_resume(struct platform_device *pdev) |
| 1785 | { |
Bryan Wu | 496a34c | 2007-09-19 23:37:14 +0800 | [diff] [blame] | 1786 | struct net_device *net_dev = platform_get_drvdata(pdev); |
Michael Hennerich | 53fd3f2 | 2010-05-10 05:39:11 +0000 | [diff] [blame] | 1787 | struct bfin_mac_local *lp = netdev_priv(net_dev); |
Bryan Wu | 496a34c | 2007-09-19 23:37:14 +0800 | [diff] [blame] | 1788 | |
Michael Hennerich | 53fd3f2 | 2010-05-10 05:39:11 +0000 | [diff] [blame] | 1789 | if (lp->wol) { |
| 1790 | bfin_write_EMAC_OPMODE(bfin_read_EMAC_OPMODE() | TE); |
| 1791 | bfin_write_EMAC_WKUP_CTL(0); |
| 1792 | disable_irq_wake(IRQ_MAC_WAKEDET); |
| 1793 | } else { |
| 1794 | if (netif_running(net_dev)) |
| 1795 | bfin_mac_open(net_dev); |
| 1796 | } |
Bryan Wu | 496a34c | 2007-09-19 23:37:14 +0800 | [diff] [blame] | 1797 | |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1798 | return 0; |
| 1799 | } |
Bryan Wu | 496a34c | 2007-09-19 23:37:14 +0800 | [diff] [blame] | 1800 | #else |
| 1801 | #define bfin_mac_suspend NULL |
| 1802 | #define bfin_mac_resume NULL |
| 1803 | #endif /* CONFIG_PM */ |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1804 | |
Bill Pemberton | 49f7315 | 2012-12-03 09:22:54 -0500 | [diff] [blame] | 1805 | static int bfin_mii_bus_probe(struct platform_device *pdev) |
Graf Yang | 080c825 | 2009-05-29 03:41:48 +0000 | [diff] [blame] | 1806 | { |
| 1807 | struct mii_bus *miibus; |
Sonic Zhang | 02460d0 | 2010-06-11 10:44:22 +0000 | [diff] [blame] | 1808 | struct bfin_mii_bus_platform_data *mii_bus_pd; |
| 1809 | const unsigned short *pin_req; |
Graf Yang | 080c825 | 2009-05-29 03:41:48 +0000 | [diff] [blame] | 1810 | int rc, i; |
| 1811 | |
Sonic Zhang | 02460d0 | 2010-06-11 10:44:22 +0000 | [diff] [blame] | 1812 | mii_bus_pd = dev_get_platdata(&pdev->dev); |
| 1813 | if (!mii_bus_pd) { |
| 1814 | dev_err(&pdev->dev, "No peripherals in platform data!\n"); |
| 1815 | return -EINVAL; |
| 1816 | } |
| 1817 | |
Graf Yang | 080c825 | 2009-05-29 03:41:48 +0000 | [diff] [blame] | 1818 | /* |
| 1819 | * We are setting up a network card, |
| 1820 | * so set the GPIO pins to Ethernet mode |
| 1821 | */ |
Sonic Zhang | 02460d0 | 2010-06-11 10:44:22 +0000 | [diff] [blame] | 1822 | pin_req = mii_bus_pd->mac_peripherals; |
Mike Frysinger | c6dd509 | 2011-01-10 02:54:29 +0000 | [diff] [blame] | 1823 | rc = peripheral_request_list(pin_req, KBUILD_MODNAME); |
Graf Yang | 080c825 | 2009-05-29 03:41:48 +0000 | [diff] [blame] | 1824 | if (rc) { |
| 1825 | dev_err(&pdev->dev, "Requesting peripherals failed!\n"); |
| 1826 | return rc; |
| 1827 | } |
| 1828 | |
| 1829 | rc = -ENOMEM; |
| 1830 | miibus = mdiobus_alloc(); |
| 1831 | if (miibus == NULL) |
| 1832 | goto out_err_alloc; |
| 1833 | miibus->read = bfin_mdiobus_read; |
| 1834 | miibus->write = bfin_mdiobus_write; |
Graf Yang | 080c825 | 2009-05-29 03:41:48 +0000 | [diff] [blame] | 1835 | |
| 1836 | miibus->parent = &pdev->dev; |
| 1837 | miibus->name = "bfin_mii_bus"; |
Sonic Zhang | 02460d0 | 2010-06-11 10:44:22 +0000 | [diff] [blame] | 1838 | miibus->phy_mask = mii_bus_pd->phy_mask; |
| 1839 | |
Florian Fainelli | 75432fd | 2012-01-09 23:59:08 +0000 | [diff] [blame] | 1840 | snprintf(miibus->id, MII_BUS_ID_SIZE, "%s-%x", |
| 1841 | pdev->name, pdev->id); |
Graf Yang | 080c825 | 2009-05-29 03:41:48 +0000 | [diff] [blame] | 1842 | |
Sonic Zhang | 02460d0 | 2010-06-11 10:44:22 +0000 | [diff] [blame] | 1843 | rc = clamp(mii_bus_pd->phydev_number, 0, PHY_MAX_ADDR); |
| 1844 | if (rc != mii_bus_pd->phydev_number) |
| 1845 | dev_err(&pdev->dev, "Invalid number (%i) of phydevs\n", |
| 1846 | mii_bus_pd->phydev_number); |
| 1847 | for (i = 0; i < rc; ++i) { |
| 1848 | unsigned short phyaddr = mii_bus_pd->phydev_data[i].addr; |
| 1849 | if (phyaddr < PHY_MAX_ADDR) |
| 1850 | miibus->irq[phyaddr] = mii_bus_pd->phydev_data[i].irq; |
| 1851 | else |
| 1852 | dev_err(&pdev->dev, |
| 1853 | "Invalid PHY address %i for phydev %i\n", |
| 1854 | phyaddr, i); |
| 1855 | } |
| 1856 | |
Graf Yang | 080c825 | 2009-05-29 03:41:48 +0000 | [diff] [blame] | 1857 | rc = mdiobus_register(miibus); |
| 1858 | if (rc) { |
| 1859 | dev_err(&pdev->dev, "Cannot register MDIO bus!\n"); |
Sudip Mukherjee | fdffd2e | 2016-01-08 16:58:15 +0530 | [diff] [blame^] | 1860 | goto out_err_irq_alloc; |
Graf Yang | 080c825 | 2009-05-29 03:41:48 +0000 | [diff] [blame] | 1861 | } |
| 1862 | |
| 1863 | platform_set_drvdata(pdev, miibus); |
| 1864 | return 0; |
| 1865 | |
Sonic Zhang | 02460d0 | 2010-06-11 10:44:22 +0000 | [diff] [blame] | 1866 | out_err_irq_alloc: |
Graf Yang | 080c825 | 2009-05-29 03:41:48 +0000 | [diff] [blame] | 1867 | mdiobus_free(miibus); |
| 1868 | out_err_alloc: |
| 1869 | peripheral_free_list(pin_req); |
| 1870 | |
| 1871 | return rc; |
| 1872 | } |
| 1873 | |
Bill Pemberton | 49f7315 | 2012-12-03 09:22:54 -0500 | [diff] [blame] | 1874 | static int bfin_mii_bus_remove(struct platform_device *pdev) |
Graf Yang | 080c825 | 2009-05-29 03:41:48 +0000 | [diff] [blame] | 1875 | { |
| 1876 | struct mii_bus *miibus = platform_get_drvdata(pdev); |
Sonic Zhang | 02460d0 | 2010-06-11 10:44:22 +0000 | [diff] [blame] | 1877 | struct bfin_mii_bus_platform_data *mii_bus_pd = |
| 1878 | dev_get_platdata(&pdev->dev); |
| 1879 | |
Graf Yang | 080c825 | 2009-05-29 03:41:48 +0000 | [diff] [blame] | 1880 | mdiobus_unregister(miibus); |
| 1881 | mdiobus_free(miibus); |
Sonic Zhang | 02460d0 | 2010-06-11 10:44:22 +0000 | [diff] [blame] | 1882 | peripheral_free_list(mii_bus_pd->mac_peripherals); |
| 1883 | |
Graf Yang | 080c825 | 2009-05-29 03:41:48 +0000 | [diff] [blame] | 1884 | return 0; |
| 1885 | } |
| 1886 | |
| 1887 | static struct platform_driver bfin_mii_bus_driver = { |
| 1888 | .probe = bfin_mii_bus_probe, |
Bill Pemberton | 49f7315 | 2012-12-03 09:22:54 -0500 | [diff] [blame] | 1889 | .remove = bfin_mii_bus_remove, |
Graf Yang | 080c825 | 2009-05-29 03:41:48 +0000 | [diff] [blame] | 1890 | .driver = { |
| 1891 | .name = "bfin_mii_bus", |
Graf Yang | 080c825 | 2009-05-29 03:41:48 +0000 | [diff] [blame] | 1892 | }, |
| 1893 | }; |
| 1894 | |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1895 | static struct platform_driver bfin_mac_driver = { |
| 1896 | .probe = bfin_mac_probe, |
Bill Pemberton | 49f7315 | 2012-12-03 09:22:54 -0500 | [diff] [blame] | 1897 | .remove = bfin_mac_remove, |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1898 | .resume = bfin_mac_resume, |
| 1899 | .suspend = bfin_mac_suspend, |
| 1900 | .driver = { |
Mike Frysinger | c6dd509 | 2011-01-10 02:54:29 +0000 | [diff] [blame] | 1901 | .name = KBUILD_MODNAME, |
Kay Sievers | 72abb46 | 2008-04-18 13:50:44 -0700 | [diff] [blame] | 1902 | }, |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1903 | }; |
| 1904 | |
Thierry Reding | 36b9ddd | 2015-12-02 17:30:26 +0100 | [diff] [blame] | 1905 | static struct platform_driver * const drivers[] = { |
| 1906 | &bfin_mii_bus_driver, |
| 1907 | &bfin_mac_driver, |
| 1908 | }; |
| 1909 | |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1910 | static int __init bfin_mac_init(void) |
| 1911 | { |
Thierry Reding | 36b9ddd | 2015-12-02 17:30:26 +0100 | [diff] [blame] | 1912 | return platform_register_drivers(drivers, ARRAY_SIZE(drivers)); |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1913 | } |
| 1914 | |
| 1915 | module_init(bfin_mac_init); |
| 1916 | |
| 1917 | static void __exit bfin_mac_cleanup(void) |
| 1918 | { |
Thierry Reding | 36b9ddd | 2015-12-02 17:30:26 +0100 | [diff] [blame] | 1919 | platform_unregister_drivers(drivers, ARRAY_SIZE(drivers)); |
Bryan Wu | e190d6b | 2007-07-17 14:43:44 +0800 | [diff] [blame] | 1920 | } |
| 1921 | |
| 1922 | module_exit(bfin_mac_cleanup); |
Kay Sievers | 72abb46 | 2008-04-18 13:50:44 -0700 | [diff] [blame] | 1923 | |