Stefan Wahren | 6be665a | 2018-09-04 19:29:11 +0200 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0+ |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 2 | /* |
| 3 | * Copyright (C) 2015 Microchip Technology |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 4 | */ |
| 5 | #include <linux/version.h> |
| 6 | #include <linux/module.h> |
| 7 | #include <linux/netdevice.h> |
| 8 | #include <linux/etherdevice.h> |
| 9 | #include <linux/ethtool.h> |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 10 | #include <linux/usb.h> |
| 11 | #include <linux/crc32.h> |
| 12 | #include <linux/signal.h> |
| 13 | #include <linux/slab.h> |
| 14 | #include <linux/if_vlan.h> |
| 15 | #include <linux/uaccess.h> |
| 16 | #include <linux/list.h> |
| 17 | #include <linux/ip.h> |
| 18 | #include <linux/ipv6.h> |
| 19 | #include <linux/mdio.h> |
Andrew Lunn | c6e970a | 2017-03-28 23:45:06 +0200 | [diff] [blame] | 20 | #include <linux/phy.h> |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 21 | #include <net/ip6_checksum.h> |
Woojung Huh | cc89c32 | 2016-11-01 20:02:00 +0000 | [diff] [blame] | 22 | #include <linux/interrupt.h> |
| 23 | #include <linux/irqdomain.h> |
| 24 | #include <linux/irq.h> |
| 25 | #include <linux/irqchip/chained_irq.h> |
Woojung.Huh@microchip.com | bdfba55e | 2015-09-16 23:41:07 +0000 | [diff] [blame] | 26 | #include <linux/microchipphy.h> |
Raghuram Chary J | 89b36fb | 2018-04-28 11:33:14 +0530 | [diff] [blame] | 27 | #include <linux/phy_fixed.h> |
Phil Elwell | 1827b06 | 2018-04-19 17:59:39 +0100 | [diff] [blame] | 28 | #include <linux/of_mdio.h> |
Phil Elwell | 760db29 | 2018-04-19 17:59:38 +0100 | [diff] [blame] | 29 | #include <linux/of_net.h> |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 30 | #include "lan78xx.h" |
| 31 | |
| 32 | #define DRIVER_AUTHOR "WOOJUNG HUH <woojung.huh@microchip.com>" |
| 33 | #define DRIVER_DESC "LAN78XX USB 3.0 Gigabit Ethernet Devices" |
| 34 | #define DRIVER_NAME "lan78xx" |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 35 | |
| 36 | #define TX_TIMEOUT_JIFFIES (5 * HZ) |
| 37 | #define THROTTLE_JIFFIES (HZ / 8) |
| 38 | #define UNLINK_TIMEOUT_MS 3 |
| 39 | |
| 40 | #define RX_MAX_QUEUE_MEMORY (60 * 1518) |
| 41 | |
| 42 | #define SS_USB_PKT_SIZE (1024) |
| 43 | #define HS_USB_PKT_SIZE (512) |
| 44 | #define FS_USB_PKT_SIZE (64) |
| 45 | |
| 46 | #define MAX_RX_FIFO_SIZE (12 * 1024) |
| 47 | #define MAX_TX_FIFO_SIZE (12 * 1024) |
| 48 | #define DEFAULT_BURST_CAP_SIZE (MAX_TX_FIFO_SIZE) |
| 49 | #define DEFAULT_BULK_IN_DELAY (0x0800) |
| 50 | #define MAX_SINGLE_PACKET_SIZE (9000) |
| 51 | #define DEFAULT_TX_CSUM_ENABLE (true) |
| 52 | #define DEFAULT_RX_CSUM_ENABLE (true) |
| 53 | #define DEFAULT_TSO_CSUM_ENABLE (true) |
| 54 | #define DEFAULT_VLAN_FILTER_ENABLE (true) |
Dave Stevenson | ec21ecf | 2018-06-25 15:07:14 +0100 | [diff] [blame] | 55 | #define DEFAULT_VLAN_RX_OFFLOAD (true) |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 56 | #define TX_OVERHEAD (8) |
| 57 | #define RXW_PADDING 2 |
| 58 | |
| 59 | #define LAN78XX_USB_VENDOR_ID (0x0424) |
| 60 | #define LAN7800_USB_PRODUCT_ID (0x7800) |
| 61 | #define LAN7850_USB_PRODUCT_ID (0x7850) |
Woojung Huh | 02dc1f3 | 2016-12-07 20:26:25 +0000 | [diff] [blame] | 62 | #define LAN7801_USB_PRODUCT_ID (0x7801) |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 63 | #define LAN78XX_EEPROM_MAGIC (0x78A5) |
| 64 | #define LAN78XX_OTP_MAGIC (0x78F3) |
| 65 | |
| 66 | #define MII_READ 1 |
| 67 | #define MII_WRITE 0 |
| 68 | |
| 69 | #define EEPROM_INDICATOR (0xA5) |
| 70 | #define EEPROM_MAC_OFFSET (0x01) |
| 71 | #define MAX_EEPROM_SIZE 512 |
| 72 | #define OTP_INDICATOR_1 (0xF3) |
| 73 | #define OTP_INDICATOR_2 (0xF7) |
| 74 | |
| 75 | #define WAKE_ALL (WAKE_PHY | WAKE_UCAST | \ |
| 76 | WAKE_MCAST | WAKE_BCAST | \ |
| 77 | WAKE_ARP | WAKE_MAGIC) |
| 78 | |
| 79 | /* USB related defines */ |
| 80 | #define BULK_IN_PIPE 1 |
| 81 | #define BULK_OUT_PIPE 2 |
| 82 | |
| 83 | /* default autosuspend delay (mSec)*/ |
| 84 | #define DEFAULT_AUTOSUSPEND_DELAY (10 * 1000) |
| 85 | |
Woojung Huh | 20ff556 | 2016-03-16 22:10:40 +0000 | [diff] [blame] | 86 | /* statistic update interval (mSec) */ |
| 87 | #define STAT_UPDATE_TIMER (1 * 1000) |
| 88 | |
Woojung Huh | cc89c32 | 2016-11-01 20:02:00 +0000 | [diff] [blame] | 89 | /* defines interrupts from interrupt EP */ |
| 90 | #define MAX_INT_EP (32) |
| 91 | #define INT_EP_INTEP (31) |
| 92 | #define INT_EP_OTP_WR_DONE (28) |
| 93 | #define INT_EP_EEE_TX_LPI_START (26) |
| 94 | #define INT_EP_EEE_TX_LPI_STOP (25) |
| 95 | #define INT_EP_EEE_RX_LPI (24) |
| 96 | #define INT_EP_MAC_RESET_TIMEOUT (23) |
| 97 | #define INT_EP_RDFO (22) |
| 98 | #define INT_EP_TXE (21) |
| 99 | #define INT_EP_USB_STATUS (20) |
| 100 | #define INT_EP_TX_DIS (19) |
| 101 | #define INT_EP_RX_DIS (18) |
| 102 | #define INT_EP_PHY (17) |
| 103 | #define INT_EP_DP (16) |
| 104 | #define INT_EP_MAC_ERR (15) |
| 105 | #define INT_EP_TDFU (14) |
| 106 | #define INT_EP_TDFO (13) |
| 107 | #define INT_EP_UTX (12) |
| 108 | #define INT_EP_GPIO_11 (11) |
| 109 | #define INT_EP_GPIO_10 (10) |
| 110 | #define INT_EP_GPIO_9 (9) |
| 111 | #define INT_EP_GPIO_8 (8) |
| 112 | #define INT_EP_GPIO_7 (7) |
| 113 | #define INT_EP_GPIO_6 (6) |
| 114 | #define INT_EP_GPIO_5 (5) |
| 115 | #define INT_EP_GPIO_4 (4) |
| 116 | #define INT_EP_GPIO_3 (3) |
| 117 | #define INT_EP_GPIO_2 (2) |
| 118 | #define INT_EP_GPIO_1 (1) |
| 119 | #define INT_EP_GPIO_0 (0) |
| 120 | |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 121 | static const char lan78xx_gstrings[][ETH_GSTRING_LEN] = { |
| 122 | "RX FCS Errors", |
| 123 | "RX Alignment Errors", |
| 124 | "Rx Fragment Errors", |
| 125 | "RX Jabber Errors", |
| 126 | "RX Undersize Frame Errors", |
| 127 | "RX Oversize Frame Errors", |
| 128 | "RX Dropped Frames", |
| 129 | "RX Unicast Byte Count", |
| 130 | "RX Broadcast Byte Count", |
| 131 | "RX Multicast Byte Count", |
| 132 | "RX Unicast Frames", |
| 133 | "RX Broadcast Frames", |
| 134 | "RX Multicast Frames", |
| 135 | "RX Pause Frames", |
| 136 | "RX 64 Byte Frames", |
| 137 | "RX 65 - 127 Byte Frames", |
| 138 | "RX 128 - 255 Byte Frames", |
| 139 | "RX 256 - 511 Bytes Frames", |
| 140 | "RX 512 - 1023 Byte Frames", |
| 141 | "RX 1024 - 1518 Byte Frames", |
| 142 | "RX Greater 1518 Byte Frames", |
| 143 | "EEE RX LPI Transitions", |
| 144 | "EEE RX LPI Time", |
| 145 | "TX FCS Errors", |
| 146 | "TX Excess Deferral Errors", |
| 147 | "TX Carrier Errors", |
| 148 | "TX Bad Byte Count", |
| 149 | "TX Single Collisions", |
| 150 | "TX Multiple Collisions", |
| 151 | "TX Excessive Collision", |
| 152 | "TX Late Collisions", |
| 153 | "TX Unicast Byte Count", |
| 154 | "TX Broadcast Byte Count", |
| 155 | "TX Multicast Byte Count", |
| 156 | "TX Unicast Frames", |
| 157 | "TX Broadcast Frames", |
| 158 | "TX Multicast Frames", |
| 159 | "TX Pause Frames", |
| 160 | "TX 64 Byte Frames", |
| 161 | "TX 65 - 127 Byte Frames", |
| 162 | "TX 128 - 255 Byte Frames", |
| 163 | "TX 256 - 511 Bytes Frames", |
| 164 | "TX 512 - 1023 Byte Frames", |
| 165 | "TX 1024 - 1518 Byte Frames", |
| 166 | "TX Greater 1518 Byte Frames", |
| 167 | "EEE TX LPI Transitions", |
| 168 | "EEE TX LPI Time", |
| 169 | }; |
| 170 | |
| 171 | struct lan78xx_statstage { |
| 172 | u32 rx_fcs_errors; |
| 173 | u32 rx_alignment_errors; |
| 174 | u32 rx_fragment_errors; |
| 175 | u32 rx_jabber_errors; |
| 176 | u32 rx_undersize_frame_errors; |
| 177 | u32 rx_oversize_frame_errors; |
| 178 | u32 rx_dropped_frames; |
| 179 | u32 rx_unicast_byte_count; |
| 180 | u32 rx_broadcast_byte_count; |
| 181 | u32 rx_multicast_byte_count; |
| 182 | u32 rx_unicast_frames; |
| 183 | u32 rx_broadcast_frames; |
| 184 | u32 rx_multicast_frames; |
| 185 | u32 rx_pause_frames; |
| 186 | u32 rx_64_byte_frames; |
| 187 | u32 rx_65_127_byte_frames; |
| 188 | u32 rx_128_255_byte_frames; |
| 189 | u32 rx_256_511_bytes_frames; |
| 190 | u32 rx_512_1023_byte_frames; |
| 191 | u32 rx_1024_1518_byte_frames; |
| 192 | u32 rx_greater_1518_byte_frames; |
| 193 | u32 eee_rx_lpi_transitions; |
| 194 | u32 eee_rx_lpi_time; |
| 195 | u32 tx_fcs_errors; |
| 196 | u32 tx_excess_deferral_errors; |
| 197 | u32 tx_carrier_errors; |
| 198 | u32 tx_bad_byte_count; |
| 199 | u32 tx_single_collisions; |
| 200 | u32 tx_multiple_collisions; |
| 201 | u32 tx_excessive_collision; |
| 202 | u32 tx_late_collisions; |
| 203 | u32 tx_unicast_byte_count; |
| 204 | u32 tx_broadcast_byte_count; |
| 205 | u32 tx_multicast_byte_count; |
| 206 | u32 tx_unicast_frames; |
| 207 | u32 tx_broadcast_frames; |
| 208 | u32 tx_multicast_frames; |
| 209 | u32 tx_pause_frames; |
| 210 | u32 tx_64_byte_frames; |
| 211 | u32 tx_65_127_byte_frames; |
| 212 | u32 tx_128_255_byte_frames; |
| 213 | u32 tx_256_511_bytes_frames; |
| 214 | u32 tx_512_1023_byte_frames; |
| 215 | u32 tx_1024_1518_byte_frames; |
| 216 | u32 tx_greater_1518_byte_frames; |
| 217 | u32 eee_tx_lpi_transitions; |
| 218 | u32 eee_tx_lpi_time; |
| 219 | }; |
| 220 | |
Woojung Huh | 20ff556 | 2016-03-16 22:10:40 +0000 | [diff] [blame] | 221 | struct lan78xx_statstage64 { |
| 222 | u64 rx_fcs_errors; |
| 223 | u64 rx_alignment_errors; |
| 224 | u64 rx_fragment_errors; |
| 225 | u64 rx_jabber_errors; |
| 226 | u64 rx_undersize_frame_errors; |
| 227 | u64 rx_oversize_frame_errors; |
| 228 | u64 rx_dropped_frames; |
| 229 | u64 rx_unicast_byte_count; |
| 230 | u64 rx_broadcast_byte_count; |
| 231 | u64 rx_multicast_byte_count; |
| 232 | u64 rx_unicast_frames; |
| 233 | u64 rx_broadcast_frames; |
| 234 | u64 rx_multicast_frames; |
| 235 | u64 rx_pause_frames; |
| 236 | u64 rx_64_byte_frames; |
| 237 | u64 rx_65_127_byte_frames; |
| 238 | u64 rx_128_255_byte_frames; |
| 239 | u64 rx_256_511_bytes_frames; |
| 240 | u64 rx_512_1023_byte_frames; |
| 241 | u64 rx_1024_1518_byte_frames; |
| 242 | u64 rx_greater_1518_byte_frames; |
| 243 | u64 eee_rx_lpi_transitions; |
| 244 | u64 eee_rx_lpi_time; |
| 245 | u64 tx_fcs_errors; |
| 246 | u64 tx_excess_deferral_errors; |
| 247 | u64 tx_carrier_errors; |
| 248 | u64 tx_bad_byte_count; |
| 249 | u64 tx_single_collisions; |
| 250 | u64 tx_multiple_collisions; |
| 251 | u64 tx_excessive_collision; |
| 252 | u64 tx_late_collisions; |
| 253 | u64 tx_unicast_byte_count; |
| 254 | u64 tx_broadcast_byte_count; |
| 255 | u64 tx_multicast_byte_count; |
| 256 | u64 tx_unicast_frames; |
| 257 | u64 tx_broadcast_frames; |
| 258 | u64 tx_multicast_frames; |
| 259 | u64 tx_pause_frames; |
| 260 | u64 tx_64_byte_frames; |
| 261 | u64 tx_65_127_byte_frames; |
| 262 | u64 tx_128_255_byte_frames; |
| 263 | u64 tx_256_511_bytes_frames; |
| 264 | u64 tx_512_1023_byte_frames; |
| 265 | u64 tx_1024_1518_byte_frames; |
| 266 | u64 tx_greater_1518_byte_frames; |
| 267 | u64 eee_tx_lpi_transitions; |
| 268 | u64 eee_tx_lpi_time; |
| 269 | }; |
| 270 | |
Raghuram Chary J | 4962186 | 2018-04-20 11:43:50 +0530 | [diff] [blame] | 271 | static u32 lan78xx_regs[] = { |
| 272 | ID_REV, |
| 273 | INT_STS, |
| 274 | HW_CFG, |
| 275 | PMT_CTL, |
| 276 | E2P_CMD, |
| 277 | E2P_DATA, |
| 278 | USB_STATUS, |
| 279 | VLAN_TYPE, |
| 280 | MAC_CR, |
| 281 | MAC_RX, |
| 282 | MAC_TX, |
| 283 | FLOW, |
| 284 | ERR_STS, |
| 285 | MII_ACC, |
| 286 | MII_DATA, |
| 287 | EEE_TX_LPI_REQ_DLY, |
| 288 | EEE_TW_TX_SYS, |
| 289 | EEE_TX_LPI_REM_DLY, |
| 290 | WUCSR |
| 291 | }; |
| 292 | |
| 293 | #define PHY_REG_SIZE (32 * sizeof(u32)) |
| 294 | |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 295 | struct lan78xx_net; |
| 296 | |
| 297 | struct lan78xx_priv { |
| 298 | struct lan78xx_net *dev; |
| 299 | u32 rfe_ctl; |
| 300 | u32 mchash_table[DP_SEL_VHF_HASH_LEN]; /* multicat hash table */ |
| 301 | u32 pfilter_table[NUM_OF_MAF][2]; /* perfect filter table */ |
| 302 | u32 vlan_table[DP_SEL_VHF_VLAN_LEN]; |
| 303 | struct mutex dataport_mutex; /* for dataport access */ |
| 304 | spinlock_t rfe_ctl_lock; /* for rfe register access */ |
| 305 | struct work_struct set_multicast; |
| 306 | struct work_struct set_vlan; |
| 307 | u32 wol; |
| 308 | }; |
| 309 | |
| 310 | enum skb_state { |
| 311 | illegal = 0, |
| 312 | tx_start, |
| 313 | tx_done, |
| 314 | rx_start, |
| 315 | rx_done, |
| 316 | rx_cleanup, |
| 317 | unlink_start |
| 318 | }; |
| 319 | |
| 320 | struct skb_data { /* skb->cb is one of these */ |
| 321 | struct urb *urb; |
| 322 | struct lan78xx_net *dev; |
| 323 | enum skb_state state; |
| 324 | size_t length; |
Woojung Huh | 74d79a2 | 2016-04-25 22:22:32 +0000 | [diff] [blame] | 325 | int num_of_packet; |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 326 | }; |
| 327 | |
| 328 | struct usb_context { |
| 329 | struct usb_ctrlrequest req; |
| 330 | struct lan78xx_net *dev; |
| 331 | }; |
| 332 | |
| 333 | #define EVENT_TX_HALT 0 |
| 334 | #define EVENT_RX_HALT 1 |
| 335 | #define EVENT_RX_MEMORY 2 |
| 336 | #define EVENT_STS_SPLIT 3 |
| 337 | #define EVENT_LINK_RESET 4 |
| 338 | #define EVENT_RX_PAUSED 5 |
| 339 | #define EVENT_DEV_WAKING 6 |
| 340 | #define EVENT_DEV_ASLEEP 7 |
| 341 | #define EVENT_DEV_OPEN 8 |
Woojung Huh | 20ff556 | 2016-03-16 22:10:40 +0000 | [diff] [blame] | 342 | #define EVENT_STAT_UPDATE 9 |
| 343 | |
| 344 | struct statstage { |
| 345 | struct mutex access_lock; /* for stats access */ |
| 346 | struct lan78xx_statstage saved; |
| 347 | struct lan78xx_statstage rollover_count; |
| 348 | struct lan78xx_statstage rollover_max; |
| 349 | struct lan78xx_statstage64 curr_stat; |
| 350 | }; |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 351 | |
Woojung Huh | cc89c32 | 2016-11-01 20:02:00 +0000 | [diff] [blame] | 352 | struct irq_domain_data { |
| 353 | struct irq_domain *irqdomain; |
| 354 | unsigned int phyirq; |
| 355 | struct irq_chip *irqchip; |
| 356 | irq_flow_handler_t irq_handler; |
| 357 | u32 irqenable; |
| 358 | struct mutex irq_lock; /* for irq bus access */ |
| 359 | }; |
| 360 | |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 361 | struct lan78xx_net { |
| 362 | struct net_device *net; |
| 363 | struct usb_device *udev; |
| 364 | struct usb_interface *intf; |
| 365 | void *driver_priv; |
| 366 | |
| 367 | int rx_qlen; |
| 368 | int tx_qlen; |
| 369 | struct sk_buff_head rxq; |
| 370 | struct sk_buff_head txq; |
| 371 | struct sk_buff_head done; |
| 372 | struct sk_buff_head rxq_pause; |
| 373 | struct sk_buff_head txq_pend; |
| 374 | |
| 375 | struct tasklet_struct bh; |
| 376 | struct delayed_work wq; |
| 377 | |
| 378 | struct usb_host_endpoint *ep_blkin; |
| 379 | struct usb_host_endpoint *ep_blkout; |
| 380 | struct usb_host_endpoint *ep_intr; |
| 381 | |
| 382 | int msg_enable; |
| 383 | |
| 384 | struct urb *urb_intr; |
| 385 | struct usb_anchor deferred; |
| 386 | |
| 387 | struct mutex phy_mutex; /* for phy access */ |
| 388 | unsigned pipe_in, pipe_out, pipe_intr; |
| 389 | |
| 390 | u32 hard_mtu; /* count any extra framing */ |
| 391 | size_t rx_urb_size; /* size for rx urbs */ |
| 392 | |
| 393 | unsigned long flags; |
| 394 | |
| 395 | wait_queue_head_t *wait; |
| 396 | unsigned char suspend_count; |
| 397 | |
| 398 | unsigned maxpacket; |
| 399 | struct timer_list delay; |
Woojung Huh | 20ff556 | 2016-03-16 22:10:40 +0000 | [diff] [blame] | 400 | struct timer_list stat_monitor; |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 401 | |
| 402 | unsigned long data[5]; |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 403 | |
| 404 | int link_on; |
| 405 | u8 mdix_ctrl; |
Woojung.Huh@microchip.com | ce85e13 | 2015-09-16 23:40:54 +0000 | [diff] [blame] | 406 | |
Woojung.Huh@microchip.com | 87177ba | 2016-02-25 23:33:07 +0000 | [diff] [blame] | 407 | u32 chipid; |
| 408 | u32 chiprev; |
Woojung.Huh@microchip.com | ce85e13 | 2015-09-16 23:40:54 +0000 | [diff] [blame] | 409 | struct mii_bus *mdiobus; |
Woojung Huh | 02dc1f3 | 2016-12-07 20:26:25 +0000 | [diff] [blame] | 410 | phy_interface_t interface; |
Woojung.Huh@microchip.com | 349e0c5 | 2016-02-25 23:33:14 +0000 | [diff] [blame] | 411 | |
| 412 | int fc_autoneg; |
| 413 | u8 fc_request_control; |
Woojung Huh | 20ff556 | 2016-03-16 22:10:40 +0000 | [diff] [blame] | 414 | |
| 415 | int delta; |
| 416 | struct statstage stats; |
Woojung Huh | cc89c32 | 2016-11-01 20:02:00 +0000 | [diff] [blame] | 417 | |
| 418 | struct irq_domain_data domain_data; |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 419 | }; |
| 420 | |
Woojung Huh | 02dc1f3 | 2016-12-07 20:26:25 +0000 | [diff] [blame] | 421 | /* define external phy id */ |
| 422 | #define PHY_LAN8835 (0x0007C130) |
| 423 | #define PHY_KSZ9031RNX (0x00221620) |
| 424 | |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 425 | /* use ethtool to change the level for any given device */ |
| 426 | static int msg_level = -1; |
| 427 | module_param(msg_level, int, 0); |
| 428 | MODULE_PARM_DESC(msg_level, "Override default message level"); |
| 429 | |
| 430 | static int lan78xx_read_reg(struct lan78xx_net *dev, u32 index, u32 *data) |
| 431 | { |
| 432 | u32 *buf = kmalloc(sizeof(u32), GFP_KERNEL); |
| 433 | int ret; |
| 434 | |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 435 | if (!buf) |
| 436 | return -ENOMEM; |
| 437 | |
| 438 | ret = usb_control_msg(dev->udev, usb_rcvctrlpipe(dev->udev, 0), |
| 439 | USB_VENDOR_REQUEST_READ_REGISTER, |
| 440 | USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, |
| 441 | 0, index, buf, 4, USB_CTRL_GET_TIMEOUT); |
| 442 | if (likely(ret >= 0)) { |
| 443 | le32_to_cpus(buf); |
| 444 | *data = *buf; |
| 445 | } else { |
| 446 | netdev_warn(dev->net, |
| 447 | "Failed to read register index 0x%08x. ret = %d", |
| 448 | index, ret); |
| 449 | } |
| 450 | |
| 451 | kfree(buf); |
| 452 | |
| 453 | return ret; |
| 454 | } |
| 455 | |
| 456 | static int lan78xx_write_reg(struct lan78xx_net *dev, u32 index, u32 data) |
| 457 | { |
| 458 | u32 *buf = kmalloc(sizeof(u32), GFP_KERNEL); |
| 459 | int ret; |
| 460 | |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 461 | if (!buf) |
| 462 | return -ENOMEM; |
| 463 | |
| 464 | *buf = data; |
| 465 | cpu_to_le32s(buf); |
| 466 | |
| 467 | ret = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0), |
| 468 | USB_VENDOR_REQUEST_WRITE_REGISTER, |
| 469 | USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, |
| 470 | 0, index, buf, 4, USB_CTRL_SET_TIMEOUT); |
| 471 | if (unlikely(ret < 0)) { |
| 472 | netdev_warn(dev->net, |
| 473 | "Failed to write register index 0x%08x. ret = %d", |
| 474 | index, ret); |
| 475 | } |
| 476 | |
| 477 | kfree(buf); |
| 478 | |
| 479 | return ret; |
| 480 | } |
| 481 | |
| 482 | static int lan78xx_read_stats(struct lan78xx_net *dev, |
| 483 | struct lan78xx_statstage *data) |
| 484 | { |
| 485 | int ret = 0; |
| 486 | int i; |
| 487 | struct lan78xx_statstage *stats; |
| 488 | u32 *src; |
| 489 | u32 *dst; |
| 490 | |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 491 | stats = kmalloc(sizeof(*stats), GFP_KERNEL); |
| 492 | if (!stats) |
| 493 | return -ENOMEM; |
| 494 | |
| 495 | ret = usb_control_msg(dev->udev, |
| 496 | usb_rcvctrlpipe(dev->udev, 0), |
| 497 | USB_VENDOR_REQUEST_GET_STATS, |
| 498 | USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, |
| 499 | 0, |
| 500 | 0, |
| 501 | (void *)stats, |
| 502 | sizeof(*stats), |
| 503 | USB_CTRL_SET_TIMEOUT); |
| 504 | if (likely(ret >= 0)) { |
| 505 | src = (u32 *)stats; |
| 506 | dst = (u32 *)data; |
| 507 | for (i = 0; i < sizeof(*stats)/sizeof(u32); i++) { |
| 508 | le32_to_cpus(&src[i]); |
| 509 | dst[i] = src[i]; |
| 510 | } |
| 511 | } else { |
| 512 | netdev_warn(dev->net, |
| 513 | "Failed to read stat ret = 0x%x", ret); |
| 514 | } |
| 515 | |
| 516 | kfree(stats); |
| 517 | |
| 518 | return ret; |
| 519 | } |
| 520 | |
Woojung Huh | 20ff556 | 2016-03-16 22:10:40 +0000 | [diff] [blame] | 521 | #define check_counter_rollover(struct1, dev_stats, member) { \ |
| 522 | if (struct1->member < dev_stats.saved.member) \ |
| 523 | dev_stats.rollover_count.member++; \ |
| 524 | } |
| 525 | |
| 526 | static void lan78xx_check_stat_rollover(struct lan78xx_net *dev, |
| 527 | struct lan78xx_statstage *stats) |
| 528 | { |
| 529 | check_counter_rollover(stats, dev->stats, rx_fcs_errors); |
| 530 | check_counter_rollover(stats, dev->stats, rx_alignment_errors); |
| 531 | check_counter_rollover(stats, dev->stats, rx_fragment_errors); |
| 532 | check_counter_rollover(stats, dev->stats, rx_jabber_errors); |
| 533 | check_counter_rollover(stats, dev->stats, rx_undersize_frame_errors); |
| 534 | check_counter_rollover(stats, dev->stats, rx_oversize_frame_errors); |
| 535 | check_counter_rollover(stats, dev->stats, rx_dropped_frames); |
| 536 | check_counter_rollover(stats, dev->stats, rx_unicast_byte_count); |
| 537 | check_counter_rollover(stats, dev->stats, rx_broadcast_byte_count); |
| 538 | check_counter_rollover(stats, dev->stats, rx_multicast_byte_count); |
| 539 | check_counter_rollover(stats, dev->stats, rx_unicast_frames); |
| 540 | check_counter_rollover(stats, dev->stats, rx_broadcast_frames); |
| 541 | check_counter_rollover(stats, dev->stats, rx_multicast_frames); |
| 542 | check_counter_rollover(stats, dev->stats, rx_pause_frames); |
| 543 | check_counter_rollover(stats, dev->stats, rx_64_byte_frames); |
| 544 | check_counter_rollover(stats, dev->stats, rx_65_127_byte_frames); |
| 545 | check_counter_rollover(stats, dev->stats, rx_128_255_byte_frames); |
| 546 | check_counter_rollover(stats, dev->stats, rx_256_511_bytes_frames); |
| 547 | check_counter_rollover(stats, dev->stats, rx_512_1023_byte_frames); |
| 548 | check_counter_rollover(stats, dev->stats, rx_1024_1518_byte_frames); |
| 549 | check_counter_rollover(stats, dev->stats, rx_greater_1518_byte_frames); |
| 550 | check_counter_rollover(stats, dev->stats, eee_rx_lpi_transitions); |
| 551 | check_counter_rollover(stats, dev->stats, eee_rx_lpi_time); |
| 552 | check_counter_rollover(stats, dev->stats, tx_fcs_errors); |
| 553 | check_counter_rollover(stats, dev->stats, tx_excess_deferral_errors); |
| 554 | check_counter_rollover(stats, dev->stats, tx_carrier_errors); |
| 555 | check_counter_rollover(stats, dev->stats, tx_bad_byte_count); |
| 556 | check_counter_rollover(stats, dev->stats, tx_single_collisions); |
| 557 | check_counter_rollover(stats, dev->stats, tx_multiple_collisions); |
| 558 | check_counter_rollover(stats, dev->stats, tx_excessive_collision); |
| 559 | check_counter_rollover(stats, dev->stats, tx_late_collisions); |
| 560 | check_counter_rollover(stats, dev->stats, tx_unicast_byte_count); |
| 561 | check_counter_rollover(stats, dev->stats, tx_broadcast_byte_count); |
| 562 | check_counter_rollover(stats, dev->stats, tx_multicast_byte_count); |
| 563 | check_counter_rollover(stats, dev->stats, tx_unicast_frames); |
| 564 | check_counter_rollover(stats, dev->stats, tx_broadcast_frames); |
| 565 | check_counter_rollover(stats, dev->stats, tx_multicast_frames); |
| 566 | check_counter_rollover(stats, dev->stats, tx_pause_frames); |
| 567 | check_counter_rollover(stats, dev->stats, tx_64_byte_frames); |
| 568 | check_counter_rollover(stats, dev->stats, tx_65_127_byte_frames); |
| 569 | check_counter_rollover(stats, dev->stats, tx_128_255_byte_frames); |
| 570 | check_counter_rollover(stats, dev->stats, tx_256_511_bytes_frames); |
| 571 | check_counter_rollover(stats, dev->stats, tx_512_1023_byte_frames); |
| 572 | check_counter_rollover(stats, dev->stats, tx_1024_1518_byte_frames); |
| 573 | check_counter_rollover(stats, dev->stats, tx_greater_1518_byte_frames); |
| 574 | check_counter_rollover(stats, dev->stats, eee_tx_lpi_transitions); |
| 575 | check_counter_rollover(stats, dev->stats, eee_tx_lpi_time); |
| 576 | |
| 577 | memcpy(&dev->stats.saved, stats, sizeof(struct lan78xx_statstage)); |
| 578 | } |
| 579 | |
| 580 | static void lan78xx_update_stats(struct lan78xx_net *dev) |
| 581 | { |
| 582 | u32 *p, *count, *max; |
| 583 | u64 *data; |
| 584 | int i; |
| 585 | struct lan78xx_statstage lan78xx_stats; |
| 586 | |
| 587 | if (usb_autopm_get_interface(dev->intf) < 0) |
| 588 | return; |
| 589 | |
| 590 | p = (u32 *)&lan78xx_stats; |
| 591 | count = (u32 *)&dev->stats.rollover_count; |
| 592 | max = (u32 *)&dev->stats.rollover_max; |
| 593 | data = (u64 *)&dev->stats.curr_stat; |
| 594 | |
| 595 | mutex_lock(&dev->stats.access_lock); |
| 596 | |
| 597 | if (lan78xx_read_stats(dev, &lan78xx_stats) > 0) |
| 598 | lan78xx_check_stat_rollover(dev, &lan78xx_stats); |
| 599 | |
| 600 | for (i = 0; i < (sizeof(lan78xx_stats) / (sizeof(u32))); i++) |
| 601 | data[i] = (u64)p[i] + ((u64)count[i] * ((u64)max[i] + 1)); |
| 602 | |
| 603 | mutex_unlock(&dev->stats.access_lock); |
| 604 | |
| 605 | usb_autopm_put_interface(dev->intf); |
| 606 | } |
| 607 | |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 608 | /* Loop until the read is completed with timeout called with phy_mutex held */ |
| 609 | static int lan78xx_phy_wait_not_busy(struct lan78xx_net *dev) |
| 610 | { |
| 611 | unsigned long start_time = jiffies; |
| 612 | u32 val; |
| 613 | int ret; |
| 614 | |
| 615 | do { |
| 616 | ret = lan78xx_read_reg(dev, MII_ACC, &val); |
| 617 | if (unlikely(ret < 0)) |
| 618 | return -EIO; |
| 619 | |
| 620 | if (!(val & MII_ACC_MII_BUSY_)) |
| 621 | return 0; |
| 622 | } while (!time_after(jiffies, start_time + HZ)); |
| 623 | |
| 624 | return -EIO; |
| 625 | } |
| 626 | |
| 627 | static inline u32 mii_access(int id, int index, int read) |
| 628 | { |
| 629 | u32 ret; |
| 630 | |
| 631 | ret = ((u32)id << MII_ACC_PHY_ADDR_SHIFT_) & MII_ACC_PHY_ADDR_MASK_; |
| 632 | ret |= ((u32)index << MII_ACC_MIIRINDA_SHIFT_) & MII_ACC_MIIRINDA_MASK_; |
| 633 | if (read) |
| 634 | ret |= MII_ACC_MII_READ_; |
| 635 | else |
| 636 | ret |= MII_ACC_MII_WRITE_; |
| 637 | ret |= MII_ACC_MII_BUSY_; |
| 638 | |
| 639 | return ret; |
| 640 | } |
| 641 | |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 642 | static int lan78xx_wait_eeprom(struct lan78xx_net *dev) |
| 643 | { |
| 644 | unsigned long start_time = jiffies; |
| 645 | u32 val; |
| 646 | int ret; |
| 647 | |
| 648 | do { |
| 649 | ret = lan78xx_read_reg(dev, E2P_CMD, &val); |
| 650 | if (unlikely(ret < 0)) |
| 651 | return -EIO; |
| 652 | |
| 653 | if (!(val & E2P_CMD_EPC_BUSY_) || |
| 654 | (val & E2P_CMD_EPC_TIMEOUT_)) |
| 655 | break; |
| 656 | usleep_range(40, 100); |
| 657 | } while (!time_after(jiffies, start_time + HZ)); |
| 658 | |
| 659 | if (val & (E2P_CMD_EPC_TIMEOUT_ | E2P_CMD_EPC_BUSY_)) { |
| 660 | netdev_warn(dev->net, "EEPROM read operation timeout"); |
| 661 | return -EIO; |
| 662 | } |
| 663 | |
| 664 | return 0; |
| 665 | } |
| 666 | |
| 667 | static int lan78xx_eeprom_confirm_not_busy(struct lan78xx_net *dev) |
| 668 | { |
| 669 | unsigned long start_time = jiffies; |
| 670 | u32 val; |
| 671 | int ret; |
| 672 | |
| 673 | do { |
| 674 | ret = lan78xx_read_reg(dev, E2P_CMD, &val); |
| 675 | if (unlikely(ret < 0)) |
| 676 | return -EIO; |
| 677 | |
| 678 | if (!(val & E2P_CMD_EPC_BUSY_)) |
| 679 | return 0; |
| 680 | |
| 681 | usleep_range(40, 100); |
| 682 | } while (!time_after(jiffies, start_time + HZ)); |
| 683 | |
| 684 | netdev_warn(dev->net, "EEPROM is busy"); |
| 685 | return -EIO; |
| 686 | } |
| 687 | |
| 688 | static int lan78xx_read_raw_eeprom(struct lan78xx_net *dev, u32 offset, |
| 689 | u32 length, u8 *data) |
| 690 | { |
| 691 | u32 val; |
Woojung.Huh@microchip.com | a0db7d10 | 2016-01-27 22:57:53 +0000 | [diff] [blame] | 692 | u32 saved; |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 693 | int i, ret; |
Woojung.Huh@microchip.com | a0db7d10 | 2016-01-27 22:57:53 +0000 | [diff] [blame] | 694 | int retval; |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 695 | |
Woojung.Huh@microchip.com | a0db7d10 | 2016-01-27 22:57:53 +0000 | [diff] [blame] | 696 | /* depends on chip, some EEPROM pins are muxed with LED function. |
| 697 | * disable & restore LED function to access EEPROM. |
| 698 | */ |
| 699 | ret = lan78xx_read_reg(dev, HW_CFG, &val); |
| 700 | saved = val; |
Woojung.Huh@microchip.com | 87177ba | 2016-02-25 23:33:07 +0000 | [diff] [blame] | 701 | if (dev->chipid == ID_REV_CHIP_ID_7800_) { |
Woojung.Huh@microchip.com | a0db7d10 | 2016-01-27 22:57:53 +0000 | [diff] [blame] | 702 | val &= ~(HW_CFG_LED1_EN_ | HW_CFG_LED0_EN_); |
| 703 | ret = lan78xx_write_reg(dev, HW_CFG, val); |
| 704 | } |
| 705 | |
| 706 | retval = lan78xx_eeprom_confirm_not_busy(dev); |
| 707 | if (retval) |
| 708 | return retval; |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 709 | |
| 710 | for (i = 0; i < length; i++) { |
| 711 | val = E2P_CMD_EPC_BUSY_ | E2P_CMD_EPC_CMD_READ_; |
| 712 | val |= (offset & E2P_CMD_EPC_ADDR_MASK_); |
| 713 | ret = lan78xx_write_reg(dev, E2P_CMD, val); |
Woojung.Huh@microchip.com | a0db7d10 | 2016-01-27 22:57:53 +0000 | [diff] [blame] | 714 | if (unlikely(ret < 0)) { |
| 715 | retval = -EIO; |
| 716 | goto exit; |
| 717 | } |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 718 | |
Woojung.Huh@microchip.com | a0db7d10 | 2016-01-27 22:57:53 +0000 | [diff] [blame] | 719 | retval = lan78xx_wait_eeprom(dev); |
| 720 | if (retval < 0) |
| 721 | goto exit; |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 722 | |
| 723 | ret = lan78xx_read_reg(dev, E2P_DATA, &val); |
Woojung.Huh@microchip.com | a0db7d10 | 2016-01-27 22:57:53 +0000 | [diff] [blame] | 724 | if (unlikely(ret < 0)) { |
| 725 | retval = -EIO; |
| 726 | goto exit; |
| 727 | } |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 728 | |
| 729 | data[i] = val & 0xFF; |
| 730 | offset++; |
| 731 | } |
| 732 | |
Woojung.Huh@microchip.com | a0db7d10 | 2016-01-27 22:57:53 +0000 | [diff] [blame] | 733 | retval = 0; |
| 734 | exit: |
Woojung.Huh@microchip.com | 87177ba | 2016-02-25 23:33:07 +0000 | [diff] [blame] | 735 | if (dev->chipid == ID_REV_CHIP_ID_7800_) |
Woojung.Huh@microchip.com | a0db7d10 | 2016-01-27 22:57:53 +0000 | [diff] [blame] | 736 | ret = lan78xx_write_reg(dev, HW_CFG, saved); |
| 737 | |
| 738 | return retval; |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 739 | } |
| 740 | |
| 741 | static int lan78xx_read_eeprom(struct lan78xx_net *dev, u32 offset, |
| 742 | u32 length, u8 *data) |
| 743 | { |
| 744 | u8 sig; |
| 745 | int ret; |
| 746 | |
| 747 | ret = lan78xx_read_raw_eeprom(dev, 0, 1, &sig); |
| 748 | if ((ret == 0) && (sig == EEPROM_INDICATOR)) |
| 749 | ret = lan78xx_read_raw_eeprom(dev, offset, length, data); |
| 750 | else |
| 751 | ret = -EINVAL; |
| 752 | |
| 753 | return ret; |
| 754 | } |
| 755 | |
| 756 | static int lan78xx_write_raw_eeprom(struct lan78xx_net *dev, u32 offset, |
| 757 | u32 length, u8 *data) |
| 758 | { |
| 759 | u32 val; |
Woojung.Huh@microchip.com | a0db7d10 | 2016-01-27 22:57:53 +0000 | [diff] [blame] | 760 | u32 saved; |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 761 | int i, ret; |
Woojung.Huh@microchip.com | a0db7d10 | 2016-01-27 22:57:53 +0000 | [diff] [blame] | 762 | int retval; |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 763 | |
Woojung.Huh@microchip.com | a0db7d10 | 2016-01-27 22:57:53 +0000 | [diff] [blame] | 764 | /* depends on chip, some EEPROM pins are muxed with LED function. |
| 765 | * disable & restore LED function to access EEPROM. |
| 766 | */ |
| 767 | ret = lan78xx_read_reg(dev, HW_CFG, &val); |
| 768 | saved = val; |
Woojung.Huh@microchip.com | 87177ba | 2016-02-25 23:33:07 +0000 | [diff] [blame] | 769 | if (dev->chipid == ID_REV_CHIP_ID_7800_) { |
Woojung.Huh@microchip.com | a0db7d10 | 2016-01-27 22:57:53 +0000 | [diff] [blame] | 770 | val &= ~(HW_CFG_LED1_EN_ | HW_CFG_LED0_EN_); |
| 771 | ret = lan78xx_write_reg(dev, HW_CFG, val); |
| 772 | } |
| 773 | |
| 774 | retval = lan78xx_eeprom_confirm_not_busy(dev); |
| 775 | if (retval) |
| 776 | goto exit; |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 777 | |
| 778 | /* Issue write/erase enable command */ |
| 779 | val = E2P_CMD_EPC_BUSY_ | E2P_CMD_EPC_CMD_EWEN_; |
| 780 | ret = lan78xx_write_reg(dev, E2P_CMD, val); |
Woojung.Huh@microchip.com | a0db7d10 | 2016-01-27 22:57:53 +0000 | [diff] [blame] | 781 | if (unlikely(ret < 0)) { |
| 782 | retval = -EIO; |
| 783 | goto exit; |
| 784 | } |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 785 | |
Woojung.Huh@microchip.com | a0db7d10 | 2016-01-27 22:57:53 +0000 | [diff] [blame] | 786 | retval = lan78xx_wait_eeprom(dev); |
| 787 | if (retval < 0) |
| 788 | goto exit; |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 789 | |
| 790 | for (i = 0; i < length; i++) { |
| 791 | /* Fill data register */ |
| 792 | val = data[i]; |
| 793 | ret = lan78xx_write_reg(dev, E2P_DATA, val); |
Woojung.Huh@microchip.com | a0db7d10 | 2016-01-27 22:57:53 +0000 | [diff] [blame] | 794 | if (ret < 0) { |
| 795 | retval = -EIO; |
| 796 | goto exit; |
| 797 | } |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 798 | |
| 799 | /* Send "write" command */ |
| 800 | val = E2P_CMD_EPC_BUSY_ | E2P_CMD_EPC_CMD_WRITE_; |
| 801 | val |= (offset & E2P_CMD_EPC_ADDR_MASK_); |
| 802 | ret = lan78xx_write_reg(dev, E2P_CMD, val); |
Woojung.Huh@microchip.com | a0db7d10 | 2016-01-27 22:57:53 +0000 | [diff] [blame] | 803 | if (ret < 0) { |
| 804 | retval = -EIO; |
| 805 | goto exit; |
| 806 | } |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 807 | |
Woojung.Huh@microchip.com | a0db7d10 | 2016-01-27 22:57:53 +0000 | [diff] [blame] | 808 | retval = lan78xx_wait_eeprom(dev); |
| 809 | if (retval < 0) |
| 810 | goto exit; |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 811 | |
| 812 | offset++; |
| 813 | } |
| 814 | |
Woojung.Huh@microchip.com | a0db7d10 | 2016-01-27 22:57:53 +0000 | [diff] [blame] | 815 | retval = 0; |
| 816 | exit: |
Woojung.Huh@microchip.com | 87177ba | 2016-02-25 23:33:07 +0000 | [diff] [blame] | 817 | if (dev->chipid == ID_REV_CHIP_ID_7800_) |
Woojung.Huh@microchip.com | a0db7d10 | 2016-01-27 22:57:53 +0000 | [diff] [blame] | 818 | ret = lan78xx_write_reg(dev, HW_CFG, saved); |
| 819 | |
| 820 | return retval; |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 821 | } |
| 822 | |
| 823 | static int lan78xx_read_raw_otp(struct lan78xx_net *dev, u32 offset, |
| 824 | u32 length, u8 *data) |
| 825 | { |
| 826 | int i; |
| 827 | int ret; |
| 828 | u32 buf; |
| 829 | unsigned long timeout; |
| 830 | |
| 831 | ret = lan78xx_read_reg(dev, OTP_PWR_DN, &buf); |
| 832 | |
| 833 | if (buf & OTP_PWR_DN_PWRDN_N_) { |
| 834 | /* clear it and wait to be cleared */ |
| 835 | ret = lan78xx_write_reg(dev, OTP_PWR_DN, 0); |
| 836 | |
| 837 | timeout = jiffies + HZ; |
| 838 | do { |
| 839 | usleep_range(1, 10); |
| 840 | ret = lan78xx_read_reg(dev, OTP_PWR_DN, &buf); |
| 841 | if (time_after(jiffies, timeout)) { |
| 842 | netdev_warn(dev->net, |
| 843 | "timeout on OTP_PWR_DN"); |
| 844 | return -EIO; |
| 845 | } |
| 846 | } while (buf & OTP_PWR_DN_PWRDN_N_); |
| 847 | } |
| 848 | |
| 849 | for (i = 0; i < length; i++) { |
| 850 | ret = lan78xx_write_reg(dev, OTP_ADDR1, |
| 851 | ((offset + i) >> 8) & OTP_ADDR1_15_11); |
| 852 | ret = lan78xx_write_reg(dev, OTP_ADDR2, |
| 853 | ((offset + i) & OTP_ADDR2_10_3)); |
| 854 | |
| 855 | ret = lan78xx_write_reg(dev, OTP_FUNC_CMD, OTP_FUNC_CMD_READ_); |
| 856 | ret = lan78xx_write_reg(dev, OTP_CMD_GO, OTP_CMD_GO_GO_); |
| 857 | |
| 858 | timeout = jiffies + HZ; |
| 859 | do { |
| 860 | udelay(1); |
| 861 | ret = lan78xx_read_reg(dev, OTP_STATUS, &buf); |
| 862 | if (time_after(jiffies, timeout)) { |
| 863 | netdev_warn(dev->net, |
| 864 | "timeout on OTP_STATUS"); |
| 865 | return -EIO; |
| 866 | } |
| 867 | } while (buf & OTP_STATUS_BUSY_); |
| 868 | |
| 869 | ret = lan78xx_read_reg(dev, OTP_RD_DATA, &buf); |
| 870 | |
| 871 | data[i] = (u8)(buf & 0xFF); |
| 872 | } |
| 873 | |
| 874 | return 0; |
| 875 | } |
| 876 | |
Woojung.Huh@microchip.com | 9fb6066 | 2016-01-05 17:29:59 +0000 | [diff] [blame] | 877 | static int lan78xx_write_raw_otp(struct lan78xx_net *dev, u32 offset, |
| 878 | u32 length, u8 *data) |
| 879 | { |
| 880 | int i; |
| 881 | int ret; |
| 882 | u32 buf; |
| 883 | unsigned long timeout; |
| 884 | |
| 885 | ret = lan78xx_read_reg(dev, OTP_PWR_DN, &buf); |
| 886 | |
| 887 | if (buf & OTP_PWR_DN_PWRDN_N_) { |
| 888 | /* clear it and wait to be cleared */ |
| 889 | ret = lan78xx_write_reg(dev, OTP_PWR_DN, 0); |
| 890 | |
| 891 | timeout = jiffies + HZ; |
| 892 | do { |
| 893 | udelay(1); |
| 894 | ret = lan78xx_read_reg(dev, OTP_PWR_DN, &buf); |
| 895 | if (time_after(jiffies, timeout)) { |
| 896 | netdev_warn(dev->net, |
| 897 | "timeout on OTP_PWR_DN completion"); |
| 898 | return -EIO; |
| 899 | } |
| 900 | } while (buf & OTP_PWR_DN_PWRDN_N_); |
| 901 | } |
| 902 | |
| 903 | /* set to BYTE program mode */ |
| 904 | ret = lan78xx_write_reg(dev, OTP_PRGM_MODE, OTP_PRGM_MODE_BYTE_); |
| 905 | |
| 906 | for (i = 0; i < length; i++) { |
| 907 | ret = lan78xx_write_reg(dev, OTP_ADDR1, |
| 908 | ((offset + i) >> 8) & OTP_ADDR1_15_11); |
| 909 | ret = lan78xx_write_reg(dev, OTP_ADDR2, |
| 910 | ((offset + i) & OTP_ADDR2_10_3)); |
| 911 | ret = lan78xx_write_reg(dev, OTP_PRGM_DATA, data[i]); |
| 912 | ret = lan78xx_write_reg(dev, OTP_TST_CMD, OTP_TST_CMD_PRGVRFY_); |
| 913 | ret = lan78xx_write_reg(dev, OTP_CMD_GO, OTP_CMD_GO_GO_); |
| 914 | |
| 915 | timeout = jiffies + HZ; |
| 916 | do { |
| 917 | udelay(1); |
| 918 | ret = lan78xx_read_reg(dev, OTP_STATUS, &buf); |
| 919 | if (time_after(jiffies, timeout)) { |
| 920 | netdev_warn(dev->net, |
| 921 | "Timeout on OTP_STATUS completion"); |
| 922 | return -EIO; |
| 923 | } |
| 924 | } while (buf & OTP_STATUS_BUSY_); |
| 925 | } |
| 926 | |
| 927 | return 0; |
| 928 | } |
| 929 | |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 930 | static int lan78xx_read_otp(struct lan78xx_net *dev, u32 offset, |
| 931 | u32 length, u8 *data) |
| 932 | { |
| 933 | u8 sig; |
| 934 | int ret; |
| 935 | |
| 936 | ret = lan78xx_read_raw_otp(dev, 0, 1, &sig); |
| 937 | |
| 938 | if (ret == 0) { |
Nathan Chancellor | 94e7c84 | 2018-09-20 15:48:30 -0700 | [diff] [blame] | 939 | if (sig == OTP_INDICATOR_2) |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 940 | offset += 0x100; |
Nathan Chancellor | 94e7c84 | 2018-09-20 15:48:30 -0700 | [diff] [blame] | 941 | else if (sig != OTP_INDICATOR_1) |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 942 | ret = -EINVAL; |
Phil Elwell | 4bfc338 | 2018-04-11 10:59:17 +0100 | [diff] [blame] | 943 | if (!ret) |
| 944 | ret = lan78xx_read_raw_otp(dev, offset, length, data); |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 945 | } |
| 946 | |
| 947 | return ret; |
| 948 | } |
| 949 | |
| 950 | static int lan78xx_dataport_wait_not_busy(struct lan78xx_net *dev) |
| 951 | { |
| 952 | int i, ret; |
| 953 | |
| 954 | for (i = 0; i < 100; i++) { |
| 955 | u32 dp_sel; |
| 956 | |
| 957 | ret = lan78xx_read_reg(dev, DP_SEL, &dp_sel); |
| 958 | if (unlikely(ret < 0)) |
| 959 | return -EIO; |
| 960 | |
| 961 | if (dp_sel & DP_SEL_DPRDY_) |
| 962 | return 0; |
| 963 | |
| 964 | usleep_range(40, 100); |
| 965 | } |
| 966 | |
| 967 | netdev_warn(dev->net, "lan78xx_dataport_wait_not_busy timed out"); |
| 968 | |
| 969 | return -EIO; |
| 970 | } |
| 971 | |
| 972 | static int lan78xx_dataport_write(struct lan78xx_net *dev, u32 ram_select, |
| 973 | u32 addr, u32 length, u32 *buf) |
| 974 | { |
| 975 | struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]); |
| 976 | u32 dp_sel; |
| 977 | int i, ret; |
| 978 | |
| 979 | if (usb_autopm_get_interface(dev->intf) < 0) |
| 980 | return 0; |
| 981 | |
| 982 | mutex_lock(&pdata->dataport_mutex); |
| 983 | |
| 984 | ret = lan78xx_dataport_wait_not_busy(dev); |
| 985 | if (ret < 0) |
| 986 | goto done; |
| 987 | |
| 988 | ret = lan78xx_read_reg(dev, DP_SEL, &dp_sel); |
| 989 | |
| 990 | dp_sel &= ~DP_SEL_RSEL_MASK_; |
| 991 | dp_sel |= ram_select; |
| 992 | ret = lan78xx_write_reg(dev, DP_SEL, dp_sel); |
| 993 | |
| 994 | for (i = 0; i < length; i++) { |
| 995 | ret = lan78xx_write_reg(dev, DP_ADDR, addr + i); |
| 996 | |
| 997 | ret = lan78xx_write_reg(dev, DP_DATA, buf[i]); |
| 998 | |
| 999 | ret = lan78xx_write_reg(dev, DP_CMD, DP_CMD_WRITE_); |
| 1000 | |
| 1001 | ret = lan78xx_dataport_wait_not_busy(dev); |
| 1002 | if (ret < 0) |
| 1003 | goto done; |
| 1004 | } |
| 1005 | |
| 1006 | done: |
| 1007 | mutex_unlock(&pdata->dataport_mutex); |
| 1008 | usb_autopm_put_interface(dev->intf); |
| 1009 | |
| 1010 | return ret; |
| 1011 | } |
| 1012 | |
| 1013 | static void lan78xx_set_addr_filter(struct lan78xx_priv *pdata, |
| 1014 | int index, u8 addr[ETH_ALEN]) |
| 1015 | { |
Stefan Wahren | 51ceac9 | 2018-09-04 19:29:12 +0200 | [diff] [blame] | 1016 | u32 temp; |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1017 | |
| 1018 | if ((pdata) && (index > 0) && (index < NUM_OF_MAF)) { |
| 1019 | temp = addr[3]; |
| 1020 | temp = addr[2] | (temp << 8); |
| 1021 | temp = addr[1] | (temp << 8); |
| 1022 | temp = addr[0] | (temp << 8); |
| 1023 | pdata->pfilter_table[index][1] = temp; |
| 1024 | temp = addr[5]; |
| 1025 | temp = addr[4] | (temp << 8); |
| 1026 | temp |= MAF_HI_VALID_ | MAF_HI_TYPE_DST_; |
| 1027 | pdata->pfilter_table[index][0] = temp; |
| 1028 | } |
| 1029 | } |
| 1030 | |
| 1031 | /* returns hash bit number for given MAC address */ |
| 1032 | static inline u32 lan78xx_hash(char addr[ETH_ALEN]) |
| 1033 | { |
| 1034 | return (ether_crc(ETH_ALEN, addr) >> 23) & 0x1ff; |
| 1035 | } |
| 1036 | |
| 1037 | static void lan78xx_deferred_multicast_write(struct work_struct *param) |
| 1038 | { |
| 1039 | struct lan78xx_priv *pdata = |
| 1040 | container_of(param, struct lan78xx_priv, set_multicast); |
| 1041 | struct lan78xx_net *dev = pdata->dev; |
| 1042 | int i; |
| 1043 | int ret; |
| 1044 | |
| 1045 | netif_dbg(dev, drv, dev->net, "deferred multicast write 0x%08x\n", |
| 1046 | pdata->rfe_ctl); |
| 1047 | |
| 1048 | lan78xx_dataport_write(dev, DP_SEL_RSEL_VLAN_DA_, DP_SEL_VHF_VLAN_LEN, |
| 1049 | DP_SEL_VHF_HASH_LEN, pdata->mchash_table); |
| 1050 | |
| 1051 | for (i = 1; i < NUM_OF_MAF; i++) { |
| 1052 | ret = lan78xx_write_reg(dev, MAF_HI(i), 0); |
| 1053 | ret = lan78xx_write_reg(dev, MAF_LO(i), |
| 1054 | pdata->pfilter_table[i][1]); |
| 1055 | ret = lan78xx_write_reg(dev, MAF_HI(i), |
| 1056 | pdata->pfilter_table[i][0]); |
| 1057 | } |
| 1058 | |
| 1059 | ret = lan78xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl); |
| 1060 | } |
| 1061 | |
| 1062 | static void lan78xx_set_multicast(struct net_device *netdev) |
| 1063 | { |
| 1064 | struct lan78xx_net *dev = netdev_priv(netdev); |
| 1065 | struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]); |
| 1066 | unsigned long flags; |
| 1067 | int i; |
| 1068 | |
| 1069 | spin_lock_irqsave(&pdata->rfe_ctl_lock, flags); |
| 1070 | |
| 1071 | pdata->rfe_ctl &= ~(RFE_CTL_UCAST_EN_ | RFE_CTL_MCAST_EN_ | |
| 1072 | RFE_CTL_DA_PERFECT_ | RFE_CTL_MCAST_HASH_); |
| 1073 | |
| 1074 | for (i = 0; i < DP_SEL_VHF_HASH_LEN; i++) |
| 1075 | pdata->mchash_table[i] = 0; |
| 1076 | /* pfilter_table[0] has own HW address */ |
| 1077 | for (i = 1; i < NUM_OF_MAF; i++) { |
| 1078 | pdata->pfilter_table[i][0] = |
| 1079 | pdata->pfilter_table[i][1] = 0; |
| 1080 | } |
| 1081 | |
| 1082 | pdata->rfe_ctl |= RFE_CTL_BCAST_EN_; |
| 1083 | |
| 1084 | if (dev->net->flags & IFF_PROMISC) { |
| 1085 | netif_dbg(dev, drv, dev->net, "promiscuous mode enabled"); |
| 1086 | pdata->rfe_ctl |= RFE_CTL_MCAST_EN_ | RFE_CTL_UCAST_EN_; |
| 1087 | } else { |
| 1088 | if (dev->net->flags & IFF_ALLMULTI) { |
| 1089 | netif_dbg(dev, drv, dev->net, |
| 1090 | "receive all multicast enabled"); |
| 1091 | pdata->rfe_ctl |= RFE_CTL_MCAST_EN_; |
| 1092 | } |
| 1093 | } |
| 1094 | |
| 1095 | if (netdev_mc_count(dev->net)) { |
| 1096 | struct netdev_hw_addr *ha; |
| 1097 | int i; |
| 1098 | |
| 1099 | netif_dbg(dev, drv, dev->net, "receive multicast hash filter"); |
| 1100 | |
| 1101 | pdata->rfe_ctl |= RFE_CTL_DA_PERFECT_; |
| 1102 | |
| 1103 | i = 1; |
| 1104 | netdev_for_each_mc_addr(ha, netdev) { |
| 1105 | /* set first 32 into Perfect Filter */ |
| 1106 | if (i < 33) { |
| 1107 | lan78xx_set_addr_filter(pdata, i, ha->addr); |
| 1108 | } else { |
| 1109 | u32 bitnum = lan78xx_hash(ha->addr); |
| 1110 | |
| 1111 | pdata->mchash_table[bitnum / 32] |= |
| 1112 | (1 << (bitnum % 32)); |
| 1113 | pdata->rfe_ctl |= RFE_CTL_MCAST_HASH_; |
| 1114 | } |
| 1115 | i++; |
| 1116 | } |
| 1117 | } |
| 1118 | |
| 1119 | spin_unlock_irqrestore(&pdata->rfe_ctl_lock, flags); |
| 1120 | |
| 1121 | /* defer register writes to a sleepable context */ |
| 1122 | schedule_work(&pdata->set_multicast); |
| 1123 | } |
| 1124 | |
| 1125 | static int lan78xx_update_flowcontrol(struct lan78xx_net *dev, u8 duplex, |
| 1126 | u16 lcladv, u16 rmtadv) |
| 1127 | { |
| 1128 | u32 flow = 0, fct_flow = 0; |
| 1129 | int ret; |
Woojung.Huh@microchip.com | 349e0c5 | 2016-02-25 23:33:14 +0000 | [diff] [blame] | 1130 | u8 cap; |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1131 | |
Woojung.Huh@microchip.com | 349e0c5 | 2016-02-25 23:33:14 +0000 | [diff] [blame] | 1132 | if (dev->fc_autoneg) |
| 1133 | cap = mii_resolve_flowctrl_fdx(lcladv, rmtadv); |
| 1134 | else |
| 1135 | cap = dev->fc_request_control; |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1136 | |
| 1137 | if (cap & FLOW_CTRL_TX) |
Woojung.Huh@microchip.com | 349e0c5 | 2016-02-25 23:33:14 +0000 | [diff] [blame] | 1138 | flow |= (FLOW_CR_TX_FCEN_ | 0xFFFF); |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1139 | |
| 1140 | if (cap & FLOW_CTRL_RX) |
| 1141 | flow |= FLOW_CR_RX_FCEN_; |
| 1142 | |
| 1143 | if (dev->udev->speed == USB_SPEED_SUPER) |
| 1144 | fct_flow = 0x817; |
| 1145 | else if (dev->udev->speed == USB_SPEED_HIGH) |
| 1146 | fct_flow = 0x211; |
| 1147 | |
| 1148 | netif_dbg(dev, link, dev->net, "rx pause %s, tx pause %s", |
| 1149 | (cap & FLOW_CTRL_RX ? "enabled" : "disabled"), |
| 1150 | (cap & FLOW_CTRL_TX ? "enabled" : "disabled")); |
| 1151 | |
| 1152 | ret = lan78xx_write_reg(dev, FCT_FLOW, fct_flow); |
| 1153 | |
| 1154 | /* threshold value should be set before enabling flow */ |
| 1155 | ret = lan78xx_write_reg(dev, FLOW, flow); |
| 1156 | |
| 1157 | return 0; |
| 1158 | } |
| 1159 | |
| 1160 | static int lan78xx_link_reset(struct lan78xx_net *dev) |
| 1161 | { |
Woojung.Huh@microchip.com | ce85e13 | 2015-09-16 23:40:54 +0000 | [diff] [blame] | 1162 | struct phy_device *phydev = dev->net->phydev; |
Philippe Reynes | 6e76510 | 2016-10-09 12:07:04 +0200 | [diff] [blame] | 1163 | struct ethtool_link_ksettings ecmd; |
Geert Uytterhoeven | 99c79ec | 2015-09-04 12:47:28 +0200 | [diff] [blame] | 1164 | int ladv, radv, ret; |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1165 | u32 buf; |
| 1166 | |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1167 | /* clear LAN78xx interrupt status */ |
| 1168 | ret = lan78xx_write_reg(dev, INT_STS, INT_STS_PHY_INT_); |
| 1169 | if (unlikely(ret < 0)) |
| 1170 | return -EIO; |
| 1171 | |
Woojung.Huh@microchip.com | ce85e13 | 2015-09-16 23:40:54 +0000 | [diff] [blame] | 1172 | phy_read_status(phydev); |
| 1173 | |
| 1174 | if (!phydev->link && dev->link_on) { |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1175 | dev->link_on = false; |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1176 | |
| 1177 | /* reset MAC */ |
| 1178 | ret = lan78xx_read_reg(dev, MAC_CR, &buf); |
| 1179 | if (unlikely(ret < 0)) |
| 1180 | return -EIO; |
| 1181 | buf |= MAC_CR_RST_; |
| 1182 | ret = lan78xx_write_reg(dev, MAC_CR, buf); |
| 1183 | if (unlikely(ret < 0)) |
| 1184 | return -EIO; |
Woojung.Huh@microchip.com | e495391 | 2016-01-27 22:57:52 +0000 | [diff] [blame] | 1185 | |
Woojung Huh | 20ff556 | 2016-03-16 22:10:40 +0000 | [diff] [blame] | 1186 | del_timer(&dev->stat_monitor); |
Woojung.Huh@microchip.com | ce85e13 | 2015-09-16 23:40:54 +0000 | [diff] [blame] | 1187 | } else if (phydev->link && !dev->link_on) { |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1188 | dev->link_on = true; |
| 1189 | |
Philippe Reynes | 6e76510 | 2016-10-09 12:07:04 +0200 | [diff] [blame] | 1190 | phy_ethtool_ksettings_get(phydev, &ecmd); |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1191 | |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1192 | if (dev->udev->speed == USB_SPEED_SUPER) { |
Philippe Reynes | 6e76510 | 2016-10-09 12:07:04 +0200 | [diff] [blame] | 1193 | if (ecmd.base.speed == 1000) { |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1194 | /* disable U2 */ |
| 1195 | ret = lan78xx_read_reg(dev, USB_CFG1, &buf); |
| 1196 | buf &= ~USB_CFG1_DEV_U2_INIT_EN_; |
| 1197 | ret = lan78xx_write_reg(dev, USB_CFG1, buf); |
| 1198 | /* enable U1 */ |
| 1199 | ret = lan78xx_read_reg(dev, USB_CFG1, &buf); |
| 1200 | buf |= USB_CFG1_DEV_U1_INIT_EN_; |
| 1201 | ret = lan78xx_write_reg(dev, USB_CFG1, buf); |
| 1202 | } else { |
| 1203 | /* enable U1 & U2 */ |
| 1204 | ret = lan78xx_read_reg(dev, USB_CFG1, &buf); |
| 1205 | buf |= USB_CFG1_DEV_U2_INIT_EN_; |
| 1206 | buf |= USB_CFG1_DEV_U1_INIT_EN_; |
| 1207 | ret = lan78xx_write_reg(dev, USB_CFG1, buf); |
| 1208 | } |
| 1209 | } |
| 1210 | |
Woojung.Huh@microchip.com | ce85e13 | 2015-09-16 23:40:54 +0000 | [diff] [blame] | 1211 | ladv = phy_read(phydev, MII_ADVERTISE); |
Geert Uytterhoeven | 99c79ec | 2015-09-04 12:47:28 +0200 | [diff] [blame] | 1212 | if (ladv < 0) |
| 1213 | return ladv; |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1214 | |
Woojung.Huh@microchip.com | ce85e13 | 2015-09-16 23:40:54 +0000 | [diff] [blame] | 1215 | radv = phy_read(phydev, MII_LPA); |
Geert Uytterhoeven | 99c79ec | 2015-09-04 12:47:28 +0200 | [diff] [blame] | 1216 | if (radv < 0) |
| 1217 | return radv; |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1218 | |
| 1219 | netif_dbg(dev, link, dev->net, |
| 1220 | "speed: %u duplex: %d anadv: 0x%04x anlpa: 0x%04x", |
Philippe Reynes | 6e76510 | 2016-10-09 12:07:04 +0200 | [diff] [blame] | 1221 | ecmd.base.speed, ecmd.base.duplex, ladv, radv); |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1222 | |
Philippe Reynes | 6e76510 | 2016-10-09 12:07:04 +0200 | [diff] [blame] | 1223 | ret = lan78xx_update_flowcontrol(dev, ecmd.base.duplex, ladv, |
| 1224 | radv); |
Woojung Huh | 20ff556 | 2016-03-16 22:10:40 +0000 | [diff] [blame] | 1225 | |
| 1226 | if (!timer_pending(&dev->stat_monitor)) { |
| 1227 | dev->delta = 1; |
| 1228 | mod_timer(&dev->stat_monitor, |
| 1229 | jiffies + STAT_UPDATE_TIMER); |
| 1230 | } |
Stefan Wahren | 136f55f | 2018-07-28 09:52:10 +0200 | [diff] [blame] | 1231 | |
| 1232 | tasklet_schedule(&dev->bh); |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1233 | } |
| 1234 | |
| 1235 | return ret; |
| 1236 | } |
| 1237 | |
| 1238 | /* some work can't be done in tasklets, so we use keventd |
| 1239 | * |
| 1240 | * NOTE: annoying asymmetry: if it's active, schedule_work() fails, |
| 1241 | * but tasklet_schedule() doesn't. hope the failure is rare. |
| 1242 | */ |
Baoyou Xie | e0c79ff | 2016-09-06 16:19:02 +0800 | [diff] [blame] | 1243 | static void lan78xx_defer_kevent(struct lan78xx_net *dev, int work) |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1244 | { |
| 1245 | set_bit(work, &dev->flags); |
| 1246 | if (!schedule_delayed_work(&dev->wq, 0)) |
| 1247 | netdev_err(dev->net, "kevent %d may have been dropped\n", work); |
| 1248 | } |
| 1249 | |
| 1250 | static void lan78xx_status(struct lan78xx_net *dev, struct urb *urb) |
| 1251 | { |
| 1252 | u32 intdata; |
| 1253 | |
| 1254 | if (urb->actual_length != 4) { |
| 1255 | netdev_warn(dev->net, |
| 1256 | "unexpected urb length %d", urb->actual_length); |
| 1257 | return; |
| 1258 | } |
| 1259 | |
| 1260 | memcpy(&intdata, urb->transfer_buffer, 4); |
| 1261 | le32_to_cpus(&intdata); |
| 1262 | |
| 1263 | if (intdata & INT_ENP_PHY_INT) { |
| 1264 | netif_dbg(dev, link, dev->net, "PHY INTR: 0x%08x\n", intdata); |
Woojung Huh | cc89c32 | 2016-11-01 20:02:00 +0000 | [diff] [blame] | 1265 | lan78xx_defer_kevent(dev, EVENT_LINK_RESET); |
| 1266 | |
| 1267 | if (dev->domain_data.phyirq > 0) |
| 1268 | generic_handle_irq(dev->domain_data.phyirq); |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1269 | } else |
| 1270 | netdev_warn(dev->net, |
| 1271 | "unexpected interrupt: 0x%08x\n", intdata); |
| 1272 | } |
| 1273 | |
| 1274 | static int lan78xx_ethtool_get_eeprom_len(struct net_device *netdev) |
| 1275 | { |
| 1276 | return MAX_EEPROM_SIZE; |
| 1277 | } |
| 1278 | |
| 1279 | static int lan78xx_ethtool_get_eeprom(struct net_device *netdev, |
| 1280 | struct ethtool_eeprom *ee, u8 *data) |
| 1281 | { |
| 1282 | struct lan78xx_net *dev = netdev_priv(netdev); |
Nisar Sayed | 8a7ffeb | 2017-09-21 02:36:36 +0530 | [diff] [blame] | 1283 | int ret; |
| 1284 | |
| 1285 | ret = usb_autopm_get_interface(dev->intf); |
| 1286 | if (ret) |
| 1287 | return ret; |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1288 | |
| 1289 | ee->magic = LAN78XX_EEPROM_MAGIC; |
| 1290 | |
Nisar Sayed | 8a7ffeb | 2017-09-21 02:36:36 +0530 | [diff] [blame] | 1291 | ret = lan78xx_read_raw_eeprom(dev, ee->offset, ee->len, data); |
| 1292 | |
| 1293 | usb_autopm_put_interface(dev->intf); |
| 1294 | |
| 1295 | return ret; |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1296 | } |
| 1297 | |
| 1298 | static int lan78xx_ethtool_set_eeprom(struct net_device *netdev, |
| 1299 | struct ethtool_eeprom *ee, u8 *data) |
| 1300 | { |
| 1301 | struct lan78xx_net *dev = netdev_priv(netdev); |
Nisar Sayed | 8a7ffeb | 2017-09-21 02:36:36 +0530 | [diff] [blame] | 1302 | int ret; |
| 1303 | |
| 1304 | ret = usb_autopm_get_interface(dev->intf); |
| 1305 | if (ret) |
| 1306 | return ret; |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1307 | |
Nisar Sayed | c077682 | 2017-09-21 02:36:37 +0530 | [diff] [blame] | 1308 | /* Invalid EEPROM_INDICATOR at offset zero will result in a failure |
| 1309 | * to load data from EEPROM |
| 1310 | */ |
| 1311 | if (ee->magic == LAN78XX_EEPROM_MAGIC) |
Nisar Sayed | 8a7ffeb | 2017-09-21 02:36:36 +0530 | [diff] [blame] | 1312 | ret = lan78xx_write_raw_eeprom(dev, ee->offset, ee->len, data); |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1313 | else if ((ee->magic == LAN78XX_OTP_MAGIC) && |
| 1314 | (ee->offset == 0) && |
| 1315 | (ee->len == 512) && |
| 1316 | (data[0] == OTP_INDICATOR_1)) |
Nisar Sayed | 8a7ffeb | 2017-09-21 02:36:36 +0530 | [diff] [blame] | 1317 | ret = lan78xx_write_raw_otp(dev, ee->offset, ee->len, data); |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1318 | |
Nisar Sayed | 8a7ffeb | 2017-09-21 02:36:36 +0530 | [diff] [blame] | 1319 | usb_autopm_put_interface(dev->intf); |
| 1320 | |
| 1321 | return ret; |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1322 | } |
| 1323 | |
| 1324 | static void lan78xx_get_strings(struct net_device *netdev, u32 stringset, |
| 1325 | u8 *data) |
| 1326 | { |
| 1327 | if (stringset == ETH_SS_STATS) |
| 1328 | memcpy(data, lan78xx_gstrings, sizeof(lan78xx_gstrings)); |
| 1329 | } |
| 1330 | |
| 1331 | static int lan78xx_get_sset_count(struct net_device *netdev, int sset) |
| 1332 | { |
| 1333 | if (sset == ETH_SS_STATS) |
| 1334 | return ARRAY_SIZE(lan78xx_gstrings); |
| 1335 | else |
| 1336 | return -EOPNOTSUPP; |
| 1337 | } |
| 1338 | |
| 1339 | static void lan78xx_get_stats(struct net_device *netdev, |
| 1340 | struct ethtool_stats *stats, u64 *data) |
| 1341 | { |
| 1342 | struct lan78xx_net *dev = netdev_priv(netdev); |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1343 | |
Woojung Huh | 20ff556 | 2016-03-16 22:10:40 +0000 | [diff] [blame] | 1344 | lan78xx_update_stats(dev); |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1345 | |
Woojung Huh | 20ff556 | 2016-03-16 22:10:40 +0000 | [diff] [blame] | 1346 | mutex_lock(&dev->stats.access_lock); |
| 1347 | memcpy(data, &dev->stats.curr_stat, sizeof(dev->stats.curr_stat)); |
| 1348 | mutex_unlock(&dev->stats.access_lock); |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1349 | } |
| 1350 | |
| 1351 | static void lan78xx_get_wol(struct net_device *netdev, |
| 1352 | struct ethtool_wolinfo *wol) |
| 1353 | { |
| 1354 | struct lan78xx_net *dev = netdev_priv(netdev); |
| 1355 | int ret; |
| 1356 | u32 buf; |
| 1357 | struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]); |
| 1358 | |
| 1359 | if (usb_autopm_get_interface(dev->intf) < 0) |
| 1360 | return; |
| 1361 | |
| 1362 | ret = lan78xx_read_reg(dev, USB_CFG0, &buf); |
| 1363 | if (unlikely(ret < 0)) { |
| 1364 | wol->supported = 0; |
| 1365 | wol->wolopts = 0; |
| 1366 | } else { |
| 1367 | if (buf & USB_CFG_RMT_WKP_) { |
| 1368 | wol->supported = WAKE_ALL; |
| 1369 | wol->wolopts = pdata->wol; |
| 1370 | } else { |
| 1371 | wol->supported = 0; |
| 1372 | wol->wolopts = 0; |
| 1373 | } |
| 1374 | } |
| 1375 | |
| 1376 | usb_autopm_put_interface(dev->intf); |
| 1377 | } |
| 1378 | |
| 1379 | static int lan78xx_set_wol(struct net_device *netdev, |
| 1380 | struct ethtool_wolinfo *wol) |
| 1381 | { |
| 1382 | struct lan78xx_net *dev = netdev_priv(netdev); |
| 1383 | struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]); |
| 1384 | int ret; |
| 1385 | |
| 1386 | ret = usb_autopm_get_interface(dev->intf); |
| 1387 | if (ret < 0) |
| 1388 | return ret; |
| 1389 | |
Florian Fainelli | eb9ad08 | 2018-09-28 16:18:52 -0700 | [diff] [blame] | 1390 | if (wol->wolopts & ~WAKE_ALL) |
| 1391 | return -EINVAL; |
| 1392 | |
| 1393 | pdata->wol = wol->wolopts; |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1394 | |
| 1395 | device_set_wakeup_enable(&dev->udev->dev, (bool)wol->wolopts); |
| 1396 | |
Woojung.Huh@microchip.com | ce85e13 | 2015-09-16 23:40:54 +0000 | [diff] [blame] | 1397 | phy_ethtool_set_wol(netdev->phydev, wol); |
| 1398 | |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1399 | usb_autopm_put_interface(dev->intf); |
| 1400 | |
| 1401 | return ret; |
| 1402 | } |
| 1403 | |
| 1404 | static int lan78xx_get_eee(struct net_device *net, struct ethtool_eee *edata) |
| 1405 | { |
| 1406 | struct lan78xx_net *dev = netdev_priv(net); |
Woojung.Huh@microchip.com | ce85e13 | 2015-09-16 23:40:54 +0000 | [diff] [blame] | 1407 | struct phy_device *phydev = net->phydev; |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1408 | int ret; |
| 1409 | u32 buf; |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1410 | |
| 1411 | ret = usb_autopm_get_interface(dev->intf); |
| 1412 | if (ret < 0) |
| 1413 | return ret; |
| 1414 | |
Woojung.Huh@microchip.com | ce85e13 | 2015-09-16 23:40:54 +0000 | [diff] [blame] | 1415 | ret = phy_ethtool_get_eee(phydev, edata); |
| 1416 | if (ret < 0) |
| 1417 | goto exit; |
| 1418 | |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1419 | ret = lan78xx_read_reg(dev, MAC_CR, &buf); |
| 1420 | if (buf & MAC_CR_EEE_EN_) { |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1421 | edata->eee_enabled = true; |
Woojung.Huh@microchip.com | ce85e13 | 2015-09-16 23:40:54 +0000 | [diff] [blame] | 1422 | edata->eee_active = !!(edata->advertised & |
| 1423 | edata->lp_advertised); |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1424 | edata->tx_lpi_enabled = true; |
| 1425 | /* EEE_TX_LPI_REQ_DLY & tx_lpi_timer are same uSec unit */ |
| 1426 | ret = lan78xx_read_reg(dev, EEE_TX_LPI_REQ_DLY, &buf); |
| 1427 | edata->tx_lpi_timer = buf; |
| 1428 | } else { |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1429 | edata->eee_enabled = false; |
| 1430 | edata->eee_active = false; |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1431 | edata->tx_lpi_enabled = false; |
| 1432 | edata->tx_lpi_timer = 0; |
| 1433 | } |
| 1434 | |
Woojung.Huh@microchip.com | ce85e13 | 2015-09-16 23:40:54 +0000 | [diff] [blame] | 1435 | ret = 0; |
| 1436 | exit: |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1437 | usb_autopm_put_interface(dev->intf); |
| 1438 | |
Woojung.Huh@microchip.com | ce85e13 | 2015-09-16 23:40:54 +0000 | [diff] [blame] | 1439 | return ret; |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1440 | } |
| 1441 | |
| 1442 | static int lan78xx_set_eee(struct net_device *net, struct ethtool_eee *edata) |
| 1443 | { |
| 1444 | struct lan78xx_net *dev = netdev_priv(net); |
| 1445 | int ret; |
| 1446 | u32 buf; |
| 1447 | |
| 1448 | ret = usb_autopm_get_interface(dev->intf); |
| 1449 | if (ret < 0) |
| 1450 | return ret; |
| 1451 | |
| 1452 | if (edata->eee_enabled) { |
| 1453 | ret = lan78xx_read_reg(dev, MAC_CR, &buf); |
| 1454 | buf |= MAC_CR_EEE_EN_; |
| 1455 | ret = lan78xx_write_reg(dev, MAC_CR, buf); |
| 1456 | |
Woojung.Huh@microchip.com | ce85e13 | 2015-09-16 23:40:54 +0000 | [diff] [blame] | 1457 | phy_ethtool_set_eee(net->phydev, edata); |
| 1458 | |
| 1459 | buf = (u32)edata->tx_lpi_timer; |
| 1460 | ret = lan78xx_write_reg(dev, EEE_TX_LPI_REQ_DLY, buf); |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1461 | } else { |
| 1462 | ret = lan78xx_read_reg(dev, MAC_CR, &buf); |
| 1463 | buf &= ~MAC_CR_EEE_EN_; |
| 1464 | ret = lan78xx_write_reg(dev, MAC_CR, buf); |
| 1465 | } |
| 1466 | |
| 1467 | usb_autopm_put_interface(dev->intf); |
| 1468 | |
| 1469 | return 0; |
| 1470 | } |
| 1471 | |
| 1472 | static u32 lan78xx_get_link(struct net_device *net) |
| 1473 | { |
Woojung.Huh@microchip.com | ce85e13 | 2015-09-16 23:40:54 +0000 | [diff] [blame] | 1474 | phy_read_status(net->phydev); |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1475 | |
Woojung.Huh@microchip.com | ce85e13 | 2015-09-16 23:40:54 +0000 | [diff] [blame] | 1476 | return net->phydev->link; |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1477 | } |
| 1478 | |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1479 | static void lan78xx_get_drvinfo(struct net_device *net, |
| 1480 | struct ethtool_drvinfo *info) |
| 1481 | { |
| 1482 | struct lan78xx_net *dev = netdev_priv(net); |
| 1483 | |
| 1484 | strncpy(info->driver, DRIVER_NAME, sizeof(info->driver)); |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1485 | usb_make_path(dev->udev, info->bus_info, sizeof(info->bus_info)); |
| 1486 | } |
| 1487 | |
| 1488 | static u32 lan78xx_get_msglevel(struct net_device *net) |
| 1489 | { |
| 1490 | struct lan78xx_net *dev = netdev_priv(net); |
| 1491 | |
| 1492 | return dev->msg_enable; |
| 1493 | } |
| 1494 | |
| 1495 | static void lan78xx_set_msglevel(struct net_device *net, u32 level) |
| 1496 | { |
| 1497 | struct lan78xx_net *dev = netdev_priv(net); |
| 1498 | |
| 1499 | dev->msg_enable = level; |
| 1500 | } |
| 1501 | |
Philippe Reynes | 6e76510 | 2016-10-09 12:07:04 +0200 | [diff] [blame] | 1502 | static int lan78xx_get_link_ksettings(struct net_device *net, |
| 1503 | struct ethtool_link_ksettings *cmd) |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1504 | { |
| 1505 | struct lan78xx_net *dev = netdev_priv(net); |
Woojung.Huh@microchip.com | ce85e13 | 2015-09-16 23:40:54 +0000 | [diff] [blame] | 1506 | struct phy_device *phydev = net->phydev; |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1507 | int ret; |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1508 | |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1509 | ret = usb_autopm_get_interface(dev->intf); |
| 1510 | if (ret < 0) |
| 1511 | return ret; |
| 1512 | |
yuval.shaia@oracle.com | 5514174 | 2017-06-13 10:09:46 +0300 | [diff] [blame] | 1513 | phy_ethtool_ksettings_get(phydev, cmd); |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1514 | |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1515 | usb_autopm_put_interface(dev->intf); |
| 1516 | |
| 1517 | return ret; |
| 1518 | } |
| 1519 | |
Philippe Reynes | 6e76510 | 2016-10-09 12:07:04 +0200 | [diff] [blame] | 1520 | static int lan78xx_set_link_ksettings(struct net_device *net, |
| 1521 | const struct ethtool_link_ksettings *cmd) |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1522 | { |
| 1523 | struct lan78xx_net *dev = netdev_priv(net); |
Woojung.Huh@microchip.com | ce85e13 | 2015-09-16 23:40:54 +0000 | [diff] [blame] | 1524 | struct phy_device *phydev = net->phydev; |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1525 | int ret = 0; |
| 1526 | int temp; |
| 1527 | |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1528 | ret = usb_autopm_get_interface(dev->intf); |
| 1529 | if (ret < 0) |
| 1530 | return ret; |
| 1531 | |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1532 | /* change speed & duplex */ |
Philippe Reynes | 6e76510 | 2016-10-09 12:07:04 +0200 | [diff] [blame] | 1533 | ret = phy_ethtool_ksettings_set(phydev, cmd); |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1534 | |
Philippe Reynes | 6e76510 | 2016-10-09 12:07:04 +0200 | [diff] [blame] | 1535 | if (!cmd->base.autoneg) { |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1536 | /* force link down */ |
Woojung.Huh@microchip.com | ce85e13 | 2015-09-16 23:40:54 +0000 | [diff] [blame] | 1537 | temp = phy_read(phydev, MII_BMCR); |
| 1538 | phy_write(phydev, MII_BMCR, temp | BMCR_LOOPBACK); |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1539 | mdelay(1); |
Woojung.Huh@microchip.com | ce85e13 | 2015-09-16 23:40:54 +0000 | [diff] [blame] | 1540 | phy_write(phydev, MII_BMCR, temp); |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1541 | } |
| 1542 | |
| 1543 | usb_autopm_put_interface(dev->intf); |
| 1544 | |
| 1545 | return ret; |
| 1546 | } |
| 1547 | |
Woojung.Huh@microchip.com | 349e0c5 | 2016-02-25 23:33:14 +0000 | [diff] [blame] | 1548 | static void lan78xx_get_pause(struct net_device *net, |
| 1549 | struct ethtool_pauseparam *pause) |
| 1550 | { |
| 1551 | struct lan78xx_net *dev = netdev_priv(net); |
| 1552 | struct phy_device *phydev = net->phydev; |
Philippe Reynes | 6e76510 | 2016-10-09 12:07:04 +0200 | [diff] [blame] | 1553 | struct ethtool_link_ksettings ecmd; |
Woojung.Huh@microchip.com | 349e0c5 | 2016-02-25 23:33:14 +0000 | [diff] [blame] | 1554 | |
Philippe Reynes | 6e76510 | 2016-10-09 12:07:04 +0200 | [diff] [blame] | 1555 | phy_ethtool_ksettings_get(phydev, &ecmd); |
Woojung.Huh@microchip.com | 349e0c5 | 2016-02-25 23:33:14 +0000 | [diff] [blame] | 1556 | |
| 1557 | pause->autoneg = dev->fc_autoneg; |
| 1558 | |
| 1559 | if (dev->fc_request_control & FLOW_CTRL_TX) |
| 1560 | pause->tx_pause = 1; |
| 1561 | |
| 1562 | if (dev->fc_request_control & FLOW_CTRL_RX) |
| 1563 | pause->rx_pause = 1; |
| 1564 | } |
| 1565 | |
| 1566 | static int lan78xx_set_pause(struct net_device *net, |
| 1567 | struct ethtool_pauseparam *pause) |
| 1568 | { |
| 1569 | struct lan78xx_net *dev = netdev_priv(net); |
| 1570 | struct phy_device *phydev = net->phydev; |
Philippe Reynes | 6e76510 | 2016-10-09 12:07:04 +0200 | [diff] [blame] | 1571 | struct ethtool_link_ksettings ecmd; |
Woojung.Huh@microchip.com | 349e0c5 | 2016-02-25 23:33:14 +0000 | [diff] [blame] | 1572 | int ret; |
| 1573 | |
Philippe Reynes | 6e76510 | 2016-10-09 12:07:04 +0200 | [diff] [blame] | 1574 | phy_ethtool_ksettings_get(phydev, &ecmd); |
Woojung.Huh@microchip.com | 349e0c5 | 2016-02-25 23:33:14 +0000 | [diff] [blame] | 1575 | |
Philippe Reynes | 6e76510 | 2016-10-09 12:07:04 +0200 | [diff] [blame] | 1576 | if (pause->autoneg && !ecmd.base.autoneg) { |
Woojung.Huh@microchip.com | 349e0c5 | 2016-02-25 23:33:14 +0000 | [diff] [blame] | 1577 | ret = -EINVAL; |
| 1578 | goto exit; |
| 1579 | } |
| 1580 | |
| 1581 | dev->fc_request_control = 0; |
| 1582 | if (pause->rx_pause) |
| 1583 | dev->fc_request_control |= FLOW_CTRL_RX; |
| 1584 | |
| 1585 | if (pause->tx_pause) |
| 1586 | dev->fc_request_control |= FLOW_CTRL_TX; |
| 1587 | |
Philippe Reynes | 6e76510 | 2016-10-09 12:07:04 +0200 | [diff] [blame] | 1588 | if (ecmd.base.autoneg) { |
Woojung.Huh@microchip.com | 349e0c5 | 2016-02-25 23:33:14 +0000 | [diff] [blame] | 1589 | u32 mii_adv; |
Philippe Reynes | 6e76510 | 2016-10-09 12:07:04 +0200 | [diff] [blame] | 1590 | u32 advertising; |
Woojung.Huh@microchip.com | 349e0c5 | 2016-02-25 23:33:14 +0000 | [diff] [blame] | 1591 | |
Philippe Reynes | 6e76510 | 2016-10-09 12:07:04 +0200 | [diff] [blame] | 1592 | ethtool_convert_link_mode_to_legacy_u32( |
| 1593 | &advertising, ecmd.link_modes.advertising); |
| 1594 | |
| 1595 | advertising &= ~(ADVERTISED_Pause | ADVERTISED_Asym_Pause); |
Woojung.Huh@microchip.com | 349e0c5 | 2016-02-25 23:33:14 +0000 | [diff] [blame] | 1596 | mii_adv = (u32)mii_advertise_flowctrl(dev->fc_request_control); |
Philippe Reynes | 6e76510 | 2016-10-09 12:07:04 +0200 | [diff] [blame] | 1597 | advertising |= mii_adv_to_ethtool_adv_t(mii_adv); |
| 1598 | |
| 1599 | ethtool_convert_legacy_u32_to_link_mode( |
| 1600 | ecmd.link_modes.advertising, advertising); |
| 1601 | |
| 1602 | phy_ethtool_ksettings_set(phydev, &ecmd); |
Woojung.Huh@microchip.com | 349e0c5 | 2016-02-25 23:33:14 +0000 | [diff] [blame] | 1603 | } |
| 1604 | |
| 1605 | dev->fc_autoneg = pause->autoneg; |
| 1606 | |
| 1607 | ret = 0; |
| 1608 | exit: |
| 1609 | return ret; |
| 1610 | } |
| 1611 | |
Raghuram Chary J | 4962186 | 2018-04-20 11:43:50 +0530 | [diff] [blame] | 1612 | static int lan78xx_get_regs_len(struct net_device *netdev) |
| 1613 | { |
| 1614 | if (!netdev->phydev) |
| 1615 | return (sizeof(lan78xx_regs)); |
| 1616 | else |
| 1617 | return (sizeof(lan78xx_regs) + PHY_REG_SIZE); |
| 1618 | } |
| 1619 | |
| 1620 | static void |
| 1621 | lan78xx_get_regs(struct net_device *netdev, struct ethtool_regs *regs, |
| 1622 | void *buf) |
| 1623 | { |
| 1624 | u32 *data = buf; |
| 1625 | int i, j; |
| 1626 | struct lan78xx_net *dev = netdev_priv(netdev); |
| 1627 | |
| 1628 | /* Read Device/MAC registers */ |
zhong jiang | bf37afc | 2018-08-03 14:53:14 +0800 | [diff] [blame] | 1629 | for (i = 0; i < ARRAY_SIZE(lan78xx_regs); i++) |
Raghuram Chary J | 4962186 | 2018-04-20 11:43:50 +0530 | [diff] [blame] | 1630 | lan78xx_read_reg(dev, lan78xx_regs[i], &data[i]); |
| 1631 | |
| 1632 | if (!netdev->phydev) |
| 1633 | return; |
| 1634 | |
| 1635 | /* Read PHY registers */ |
| 1636 | for (j = 0; j < 32; i++, j++) |
| 1637 | data[i] = phy_read(netdev->phydev, j); |
| 1638 | } |
| 1639 | |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1640 | static const struct ethtool_ops lan78xx_ethtool_ops = { |
| 1641 | .get_link = lan78xx_get_link, |
Florian Fainelli | 860ce4b | 2016-11-15 10:06:44 -0800 | [diff] [blame] | 1642 | .nway_reset = phy_ethtool_nway_reset, |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1643 | .get_drvinfo = lan78xx_get_drvinfo, |
| 1644 | .get_msglevel = lan78xx_get_msglevel, |
| 1645 | .set_msglevel = lan78xx_set_msglevel, |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1646 | .get_eeprom_len = lan78xx_ethtool_get_eeprom_len, |
| 1647 | .get_eeprom = lan78xx_ethtool_get_eeprom, |
| 1648 | .set_eeprom = lan78xx_ethtool_set_eeprom, |
| 1649 | .get_ethtool_stats = lan78xx_get_stats, |
| 1650 | .get_sset_count = lan78xx_get_sset_count, |
| 1651 | .get_strings = lan78xx_get_strings, |
| 1652 | .get_wol = lan78xx_get_wol, |
| 1653 | .set_wol = lan78xx_set_wol, |
| 1654 | .get_eee = lan78xx_get_eee, |
| 1655 | .set_eee = lan78xx_set_eee, |
Woojung.Huh@microchip.com | 349e0c5 | 2016-02-25 23:33:14 +0000 | [diff] [blame] | 1656 | .get_pauseparam = lan78xx_get_pause, |
| 1657 | .set_pauseparam = lan78xx_set_pause, |
Philippe Reynes | 6e76510 | 2016-10-09 12:07:04 +0200 | [diff] [blame] | 1658 | .get_link_ksettings = lan78xx_get_link_ksettings, |
| 1659 | .set_link_ksettings = lan78xx_set_link_ksettings, |
Raghuram Chary J | 4962186 | 2018-04-20 11:43:50 +0530 | [diff] [blame] | 1660 | .get_regs_len = lan78xx_get_regs_len, |
| 1661 | .get_regs = lan78xx_get_regs, |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1662 | }; |
| 1663 | |
| 1664 | static int lan78xx_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd) |
| 1665 | { |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1666 | if (!netif_running(netdev)) |
| 1667 | return -EINVAL; |
| 1668 | |
Woojung.Huh@microchip.com | ce85e13 | 2015-09-16 23:40:54 +0000 | [diff] [blame] | 1669 | return phy_mii_ioctl(netdev->phydev, rq, cmd); |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1670 | } |
| 1671 | |
| 1672 | static void lan78xx_init_mac_address(struct lan78xx_net *dev) |
| 1673 | { |
| 1674 | u32 addr_lo, addr_hi; |
| 1675 | int ret; |
| 1676 | u8 addr[6]; |
| 1677 | |
| 1678 | ret = lan78xx_read_reg(dev, RX_ADDRL, &addr_lo); |
| 1679 | ret = lan78xx_read_reg(dev, RX_ADDRH, &addr_hi); |
| 1680 | |
| 1681 | addr[0] = addr_lo & 0xFF; |
| 1682 | addr[1] = (addr_lo >> 8) & 0xFF; |
| 1683 | addr[2] = (addr_lo >> 16) & 0xFF; |
| 1684 | addr[3] = (addr_lo >> 24) & 0xFF; |
| 1685 | addr[4] = addr_hi & 0xFF; |
| 1686 | addr[5] = (addr_hi >> 8) & 0xFF; |
| 1687 | |
| 1688 | if (!is_valid_ether_addr(addr)) { |
Phil Elwell | 760db29 | 2018-04-19 17:59:38 +0100 | [diff] [blame] | 1689 | if (!eth_platform_get_mac_address(&dev->udev->dev, addr)) { |
| 1690 | /* valid address present in Device Tree */ |
| 1691 | netif_dbg(dev, ifup, dev->net, |
| 1692 | "MAC address read from Device Tree"); |
| 1693 | } else if (((lan78xx_read_eeprom(dev, EEPROM_MAC_OFFSET, |
| 1694 | ETH_ALEN, addr) == 0) || |
| 1695 | (lan78xx_read_otp(dev, EEPROM_MAC_OFFSET, |
| 1696 | ETH_ALEN, addr) == 0)) && |
| 1697 | is_valid_ether_addr(addr)) { |
| 1698 | /* eeprom values are valid so use them */ |
| 1699 | netif_dbg(dev, ifup, dev->net, |
| 1700 | "MAC address read from EEPROM"); |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1701 | } else { |
| 1702 | /* generate random MAC */ |
Joe Perches | 6c1f0a1 | 2018-06-22 10:51:00 -0700 | [diff] [blame] | 1703 | eth_random_addr(addr); |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1704 | netif_dbg(dev, ifup, dev->net, |
| 1705 | "MAC address set to random addr"); |
| 1706 | } |
Phil Elwell | 760db29 | 2018-04-19 17:59:38 +0100 | [diff] [blame] | 1707 | |
| 1708 | addr_lo = addr[0] | (addr[1] << 8) | |
| 1709 | (addr[2] << 16) | (addr[3] << 24); |
| 1710 | addr_hi = addr[4] | (addr[5] << 8); |
| 1711 | |
| 1712 | ret = lan78xx_write_reg(dev, RX_ADDRL, addr_lo); |
| 1713 | ret = lan78xx_write_reg(dev, RX_ADDRH, addr_hi); |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1714 | } |
| 1715 | |
| 1716 | ret = lan78xx_write_reg(dev, MAF_LO(0), addr_lo); |
| 1717 | ret = lan78xx_write_reg(dev, MAF_HI(0), addr_hi | MAF_HI_VALID_); |
| 1718 | |
| 1719 | ether_addr_copy(dev->net->dev_addr, addr); |
| 1720 | } |
| 1721 | |
Woojung.Huh@microchip.com | ce85e13 | 2015-09-16 23:40:54 +0000 | [diff] [blame] | 1722 | /* MDIO read and write wrappers for phylib */ |
| 1723 | static int lan78xx_mdiobus_read(struct mii_bus *bus, int phy_id, int idx) |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1724 | { |
Woojung.Huh@microchip.com | ce85e13 | 2015-09-16 23:40:54 +0000 | [diff] [blame] | 1725 | struct lan78xx_net *dev = bus->priv; |
| 1726 | u32 val, addr; |
| 1727 | int ret; |
| 1728 | |
| 1729 | ret = usb_autopm_get_interface(dev->intf); |
| 1730 | if (ret < 0) |
| 1731 | return ret; |
| 1732 | |
| 1733 | mutex_lock(&dev->phy_mutex); |
| 1734 | |
| 1735 | /* confirm MII not busy */ |
| 1736 | ret = lan78xx_phy_wait_not_busy(dev); |
| 1737 | if (ret < 0) |
| 1738 | goto done; |
| 1739 | |
| 1740 | /* set the address, index & direction (read from PHY) */ |
| 1741 | addr = mii_access(phy_id, idx, MII_READ); |
| 1742 | ret = lan78xx_write_reg(dev, MII_ACC, addr); |
| 1743 | |
| 1744 | ret = lan78xx_phy_wait_not_busy(dev); |
| 1745 | if (ret < 0) |
| 1746 | goto done; |
| 1747 | |
| 1748 | ret = lan78xx_read_reg(dev, MII_DATA, &val); |
| 1749 | |
| 1750 | ret = (int)(val & 0xFFFF); |
| 1751 | |
| 1752 | done: |
| 1753 | mutex_unlock(&dev->phy_mutex); |
| 1754 | usb_autopm_put_interface(dev->intf); |
Woojung Huh | 02dc1f3 | 2016-12-07 20:26:25 +0000 | [diff] [blame] | 1755 | |
Woojung.Huh@microchip.com | ce85e13 | 2015-09-16 23:40:54 +0000 | [diff] [blame] | 1756 | return ret; |
| 1757 | } |
| 1758 | |
| 1759 | static int lan78xx_mdiobus_write(struct mii_bus *bus, int phy_id, int idx, |
| 1760 | u16 regval) |
| 1761 | { |
| 1762 | struct lan78xx_net *dev = bus->priv; |
| 1763 | u32 val, addr; |
| 1764 | int ret; |
| 1765 | |
| 1766 | ret = usb_autopm_get_interface(dev->intf); |
| 1767 | if (ret < 0) |
| 1768 | return ret; |
| 1769 | |
| 1770 | mutex_lock(&dev->phy_mutex); |
| 1771 | |
| 1772 | /* confirm MII not busy */ |
| 1773 | ret = lan78xx_phy_wait_not_busy(dev); |
| 1774 | if (ret < 0) |
| 1775 | goto done; |
| 1776 | |
| 1777 | val = (u32)regval; |
| 1778 | ret = lan78xx_write_reg(dev, MII_DATA, val); |
| 1779 | |
| 1780 | /* set the address, index & direction (write to PHY) */ |
| 1781 | addr = mii_access(phy_id, idx, MII_WRITE); |
| 1782 | ret = lan78xx_write_reg(dev, MII_ACC, addr); |
| 1783 | |
| 1784 | ret = lan78xx_phy_wait_not_busy(dev); |
| 1785 | if (ret < 0) |
| 1786 | goto done; |
| 1787 | |
| 1788 | done: |
| 1789 | mutex_unlock(&dev->phy_mutex); |
| 1790 | usb_autopm_put_interface(dev->intf); |
| 1791 | return 0; |
| 1792 | } |
| 1793 | |
| 1794 | static int lan78xx_mdio_init(struct lan78xx_net *dev) |
| 1795 | { |
Phil Elwell | 1827b06 | 2018-04-19 17:59:39 +0100 | [diff] [blame] | 1796 | struct device_node *node; |
Woojung.Huh@microchip.com | ce85e13 | 2015-09-16 23:40:54 +0000 | [diff] [blame] | 1797 | int ret; |
Woojung.Huh@microchip.com | ce85e13 | 2015-09-16 23:40:54 +0000 | [diff] [blame] | 1798 | |
| 1799 | dev->mdiobus = mdiobus_alloc(); |
| 1800 | if (!dev->mdiobus) { |
| 1801 | netdev_err(dev->net, "can't allocate MDIO bus\n"); |
| 1802 | return -ENOMEM; |
| 1803 | } |
| 1804 | |
| 1805 | dev->mdiobus->priv = (void *)dev; |
| 1806 | dev->mdiobus->read = lan78xx_mdiobus_read; |
| 1807 | dev->mdiobus->write = lan78xx_mdiobus_write; |
| 1808 | dev->mdiobus->name = "lan78xx-mdiobus"; |
| 1809 | |
| 1810 | snprintf(dev->mdiobus->id, MII_BUS_ID_SIZE, "usb-%03d:%03d", |
| 1811 | dev->udev->bus->busnum, dev->udev->devnum); |
| 1812 | |
Woojung.Huh@microchip.com | 87177ba | 2016-02-25 23:33:07 +0000 | [diff] [blame] | 1813 | switch (dev->chipid) { |
| 1814 | case ID_REV_CHIP_ID_7800_: |
| 1815 | case ID_REV_CHIP_ID_7850_: |
Woojung.Huh@microchip.com | ce85e13 | 2015-09-16 23:40:54 +0000 | [diff] [blame] | 1816 | /* set to internal PHY id */ |
| 1817 | dev->mdiobus->phy_mask = ~(1 << 1); |
| 1818 | break; |
Woojung Huh | 02dc1f3 | 2016-12-07 20:26:25 +0000 | [diff] [blame] | 1819 | case ID_REV_CHIP_ID_7801_: |
| 1820 | /* scan thru PHYAD[2..0] */ |
| 1821 | dev->mdiobus->phy_mask = ~(0xFF); |
| 1822 | break; |
Woojung.Huh@microchip.com | ce85e13 | 2015-09-16 23:40:54 +0000 | [diff] [blame] | 1823 | } |
| 1824 | |
Phil Elwell | 1827b06 | 2018-04-19 17:59:39 +0100 | [diff] [blame] | 1825 | node = of_get_child_by_name(dev->udev->dev.of_node, "mdio"); |
Florian Fainelli | 00e798c | 2018-05-15 16:56:19 -0700 | [diff] [blame] | 1826 | ret = of_mdiobus_register(dev->mdiobus, node); |
zhong jiang | 764ea37 | 2018-09-16 21:20:17 +0800 | [diff] [blame] | 1827 | of_node_put(node); |
Woojung.Huh@microchip.com | ce85e13 | 2015-09-16 23:40:54 +0000 | [diff] [blame] | 1828 | if (ret) { |
| 1829 | netdev_err(dev->net, "can't register MDIO bus\n"); |
Andrew Lunn | e7f4dc3 | 2016-01-06 20:11:15 +0100 | [diff] [blame] | 1830 | goto exit1; |
Woojung.Huh@microchip.com | ce85e13 | 2015-09-16 23:40:54 +0000 | [diff] [blame] | 1831 | } |
| 1832 | |
| 1833 | netdev_dbg(dev->net, "registered mdiobus bus %s\n", dev->mdiobus->id); |
| 1834 | return 0; |
Woojung.Huh@microchip.com | ce85e13 | 2015-09-16 23:40:54 +0000 | [diff] [blame] | 1835 | exit1: |
| 1836 | mdiobus_free(dev->mdiobus); |
| 1837 | return ret; |
| 1838 | } |
| 1839 | |
| 1840 | static void lan78xx_remove_mdio(struct lan78xx_net *dev) |
| 1841 | { |
| 1842 | mdiobus_unregister(dev->mdiobus); |
Woojung.Huh@microchip.com | ce85e13 | 2015-09-16 23:40:54 +0000 | [diff] [blame] | 1843 | mdiobus_free(dev->mdiobus); |
| 1844 | } |
| 1845 | |
| 1846 | static void lan78xx_link_status_change(struct net_device *net) |
| 1847 | { |
Woojung Huh | 14437e3 | 2016-04-25 22:22:36 +0000 | [diff] [blame] | 1848 | struct phy_device *phydev = net->phydev; |
| 1849 | int ret, temp; |
| 1850 | |
| 1851 | /* At forced 100 F/H mode, chip may fail to set mode correctly |
| 1852 | * when cable is switched between long(~50+m) and short one. |
| 1853 | * As workaround, set to 10 before setting to 100 |
| 1854 | * at forced 100 F/H mode. |
| 1855 | */ |
| 1856 | if (!phydev->autoneg && (phydev->speed == 100)) { |
| 1857 | /* disable phy interrupt */ |
| 1858 | temp = phy_read(phydev, LAN88XX_INT_MASK); |
| 1859 | temp &= ~LAN88XX_INT_MASK_MDINTPIN_EN_; |
| 1860 | ret = phy_write(phydev, LAN88XX_INT_MASK, temp); |
| 1861 | |
| 1862 | temp = phy_read(phydev, MII_BMCR); |
| 1863 | temp &= ~(BMCR_SPEED100 | BMCR_SPEED1000); |
| 1864 | phy_write(phydev, MII_BMCR, temp); /* set to 10 first */ |
| 1865 | temp |= BMCR_SPEED100; |
| 1866 | phy_write(phydev, MII_BMCR, temp); /* set to 100 later */ |
| 1867 | |
| 1868 | /* clear pending interrupt generated while workaround */ |
| 1869 | temp = phy_read(phydev, LAN88XX_INT_STS); |
| 1870 | |
| 1871 | /* enable phy interrupt back */ |
| 1872 | temp = phy_read(phydev, LAN88XX_INT_MASK); |
| 1873 | temp |= LAN88XX_INT_MASK_MDINTPIN_EN_; |
| 1874 | ret = phy_write(phydev, LAN88XX_INT_MASK, temp); |
| 1875 | } |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 1876 | } |
| 1877 | |
Woojung Huh | cc89c32 | 2016-11-01 20:02:00 +0000 | [diff] [blame] | 1878 | static int irq_map(struct irq_domain *d, unsigned int irq, |
| 1879 | irq_hw_number_t hwirq) |
| 1880 | { |
| 1881 | struct irq_domain_data *data = d->host_data; |
| 1882 | |
| 1883 | irq_set_chip_data(irq, data); |
| 1884 | irq_set_chip_and_handler(irq, data->irqchip, data->irq_handler); |
| 1885 | irq_set_noprobe(irq); |
| 1886 | |
| 1887 | return 0; |
| 1888 | } |
| 1889 | |
| 1890 | static void irq_unmap(struct irq_domain *d, unsigned int irq) |
| 1891 | { |
| 1892 | irq_set_chip_and_handler(irq, NULL, NULL); |
| 1893 | irq_set_chip_data(irq, NULL); |
| 1894 | } |
| 1895 | |
| 1896 | static const struct irq_domain_ops chip_domain_ops = { |
| 1897 | .map = irq_map, |
| 1898 | .unmap = irq_unmap, |
| 1899 | }; |
| 1900 | |
| 1901 | static void lan78xx_irq_mask(struct irq_data *irqd) |
| 1902 | { |
| 1903 | struct irq_domain_data *data = irq_data_get_irq_chip_data(irqd); |
| 1904 | |
| 1905 | data->irqenable &= ~BIT(irqd_to_hwirq(irqd)); |
| 1906 | } |
| 1907 | |
| 1908 | static void lan78xx_irq_unmask(struct irq_data *irqd) |
| 1909 | { |
| 1910 | struct irq_domain_data *data = irq_data_get_irq_chip_data(irqd); |
| 1911 | |
| 1912 | data->irqenable |= BIT(irqd_to_hwirq(irqd)); |
| 1913 | } |
| 1914 | |
| 1915 | static void lan78xx_irq_bus_lock(struct irq_data *irqd) |
| 1916 | { |
| 1917 | struct irq_domain_data *data = irq_data_get_irq_chip_data(irqd); |
| 1918 | |
| 1919 | mutex_lock(&data->irq_lock); |
| 1920 | } |
| 1921 | |
| 1922 | static void lan78xx_irq_bus_sync_unlock(struct irq_data *irqd) |
| 1923 | { |
| 1924 | struct irq_domain_data *data = irq_data_get_irq_chip_data(irqd); |
| 1925 | struct lan78xx_net *dev = |
| 1926 | container_of(data, struct lan78xx_net, domain_data); |
| 1927 | u32 buf; |
| 1928 | int ret; |
| 1929 | |
| 1930 | /* call register access here because irq_bus_lock & irq_bus_sync_unlock |
| 1931 | * are only two callbacks executed in non-atomic contex. |
| 1932 | */ |
| 1933 | ret = lan78xx_read_reg(dev, INT_EP_CTL, &buf); |
| 1934 | if (buf != data->irqenable) |
| 1935 | ret = lan78xx_write_reg(dev, INT_EP_CTL, data->irqenable); |
| 1936 | |
| 1937 | mutex_unlock(&data->irq_lock); |
| 1938 | } |
| 1939 | |
| 1940 | static struct irq_chip lan78xx_irqchip = { |
| 1941 | .name = "lan78xx-irqs", |
| 1942 | .irq_mask = lan78xx_irq_mask, |
| 1943 | .irq_unmask = lan78xx_irq_unmask, |
| 1944 | .irq_bus_lock = lan78xx_irq_bus_lock, |
| 1945 | .irq_bus_sync_unlock = lan78xx_irq_bus_sync_unlock, |
| 1946 | }; |
| 1947 | |
| 1948 | static int lan78xx_setup_irq_domain(struct lan78xx_net *dev) |
| 1949 | { |
| 1950 | struct device_node *of_node; |
| 1951 | struct irq_domain *irqdomain; |
| 1952 | unsigned int irqmap = 0; |
| 1953 | u32 buf; |
| 1954 | int ret = 0; |
| 1955 | |
| 1956 | of_node = dev->udev->dev.parent->of_node; |
| 1957 | |
| 1958 | mutex_init(&dev->domain_data.irq_lock); |
| 1959 | |
| 1960 | lan78xx_read_reg(dev, INT_EP_CTL, &buf); |
| 1961 | dev->domain_data.irqenable = buf; |
| 1962 | |
| 1963 | dev->domain_data.irqchip = &lan78xx_irqchip; |
| 1964 | dev->domain_data.irq_handler = handle_simple_irq; |
| 1965 | |
| 1966 | irqdomain = irq_domain_add_simple(of_node, MAX_INT_EP, 0, |
| 1967 | &chip_domain_ops, &dev->domain_data); |
| 1968 | if (irqdomain) { |
| 1969 | /* create mapping for PHY interrupt */ |
| 1970 | irqmap = irq_create_mapping(irqdomain, INT_EP_PHY); |
| 1971 | if (!irqmap) { |
| 1972 | irq_domain_remove(irqdomain); |
| 1973 | |
| 1974 | irqdomain = NULL; |
| 1975 | ret = -EINVAL; |
| 1976 | } |
| 1977 | } else { |
| 1978 | ret = -EINVAL; |
| 1979 | } |
| 1980 | |
| 1981 | dev->domain_data.irqdomain = irqdomain; |
| 1982 | dev->domain_data.phyirq = irqmap; |
| 1983 | |
| 1984 | return ret; |
| 1985 | } |
| 1986 | |
| 1987 | static void lan78xx_remove_irq_domain(struct lan78xx_net *dev) |
| 1988 | { |
| 1989 | if (dev->domain_data.phyirq > 0) { |
| 1990 | irq_dispose_mapping(dev->domain_data.phyirq); |
| 1991 | |
| 1992 | if (dev->domain_data.irqdomain) |
| 1993 | irq_domain_remove(dev->domain_data.irqdomain); |
| 1994 | } |
| 1995 | dev->domain_data.phyirq = 0; |
| 1996 | dev->domain_data.irqdomain = NULL; |
| 1997 | } |
| 1998 | |
Woojung Huh | 02dc1f3 | 2016-12-07 20:26:25 +0000 | [diff] [blame] | 1999 | static int lan8835_fixup(struct phy_device *phydev) |
| 2000 | { |
| 2001 | int buf; |
| 2002 | int ret; |
| 2003 | struct lan78xx_net *dev = netdev_priv(phydev->attached_dev); |
| 2004 | |
| 2005 | /* LED2/PME_N/IRQ_N/RGMII_ID pin to IRQ_N mode */ |
Russell King | 5f61367 | 2017-03-21 16:36:48 +0000 | [diff] [blame] | 2006 | buf = phy_read_mmd(phydev, MDIO_MMD_PCS, 0x8010); |
Woojung Huh | 02dc1f3 | 2016-12-07 20:26:25 +0000 | [diff] [blame] | 2007 | buf &= ~0x1800; |
| 2008 | buf |= 0x0800; |
Russell King | 5f61367 | 2017-03-21 16:36:48 +0000 | [diff] [blame] | 2009 | phy_write_mmd(phydev, MDIO_MMD_PCS, 0x8010, buf); |
Woojung Huh | 02dc1f3 | 2016-12-07 20:26:25 +0000 | [diff] [blame] | 2010 | |
| 2011 | /* RGMII MAC TXC Delay Enable */ |
| 2012 | ret = lan78xx_write_reg(dev, MAC_RGMII_ID, |
| 2013 | MAC_RGMII_ID_TXC_DELAY_EN_); |
| 2014 | |
| 2015 | /* RGMII TX DLL Tune Adjust */ |
| 2016 | ret = lan78xx_write_reg(dev, RGMII_TX_BYP_DLL, 0x3D00); |
| 2017 | |
| 2018 | dev->interface = PHY_INTERFACE_MODE_RGMII_TXID; |
| 2019 | |
| 2020 | return 1; |
| 2021 | } |
| 2022 | |
| 2023 | static int ksz9031rnx_fixup(struct phy_device *phydev) |
| 2024 | { |
| 2025 | struct lan78xx_net *dev = netdev_priv(phydev->attached_dev); |
| 2026 | |
| 2027 | /* Micrel9301RNX PHY configuration */ |
| 2028 | /* RGMII Control Signal Pad Skew */ |
Russell King | 5f61367 | 2017-03-21 16:36:48 +0000 | [diff] [blame] | 2029 | phy_write_mmd(phydev, MDIO_MMD_WIS, 4, 0x0077); |
Woojung Huh | 02dc1f3 | 2016-12-07 20:26:25 +0000 | [diff] [blame] | 2030 | /* RGMII RX Data Pad Skew */ |
Russell King | 5f61367 | 2017-03-21 16:36:48 +0000 | [diff] [blame] | 2031 | phy_write_mmd(phydev, MDIO_MMD_WIS, 5, 0x7777); |
Woojung Huh | 02dc1f3 | 2016-12-07 20:26:25 +0000 | [diff] [blame] | 2032 | /* RGMII RX Clock Pad Skew */ |
Russell King | 5f61367 | 2017-03-21 16:36:48 +0000 | [diff] [blame] | 2033 | phy_write_mmd(phydev, MDIO_MMD_WIS, 8, 0x1FF); |
Woojung Huh | 02dc1f3 | 2016-12-07 20:26:25 +0000 | [diff] [blame] | 2034 | |
| 2035 | dev->interface = PHY_INTERFACE_MODE_RGMII_RXID; |
| 2036 | |
| 2037 | return 1; |
| 2038 | } |
| 2039 | |
Raghuram Chary J | 89b36fb | 2018-04-28 11:33:14 +0530 | [diff] [blame] | 2040 | static struct phy_device *lan7801_phy_init(struct lan78xx_net *dev) |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 2041 | { |
Raghuram Chary J | 89b36fb | 2018-04-28 11:33:14 +0530 | [diff] [blame] | 2042 | u32 buf; |
Woojung.Huh@microchip.com | ce85e13 | 2015-09-16 23:40:54 +0000 | [diff] [blame] | 2043 | int ret; |
Raghuram Chary J | 89b36fb | 2018-04-28 11:33:14 +0530 | [diff] [blame] | 2044 | struct fixed_phy_status fphy_status = { |
| 2045 | .link = 1, |
| 2046 | .speed = SPEED_1000, |
| 2047 | .duplex = DUPLEX_FULL, |
| 2048 | }; |
Colin Ian King | 3b51cc7 | 2018-02-01 17:10:18 +0000 | [diff] [blame] | 2049 | struct phy_device *phydev; |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 2050 | |
Woojung.Huh@microchip.com | ce85e13 | 2015-09-16 23:40:54 +0000 | [diff] [blame] | 2051 | phydev = phy_find_first(dev->mdiobus); |
| 2052 | if (!phydev) { |
Raghuram Chary J | 89b36fb | 2018-04-28 11:33:14 +0530 | [diff] [blame] | 2053 | netdev_dbg(dev->net, "PHY Not Found!! Registering Fixed PHY\n"); |
| 2054 | phydev = fixed_phy_register(PHY_POLL, &fphy_status, -1, |
| 2055 | NULL); |
| 2056 | if (IS_ERR(phydev)) { |
| 2057 | netdev_err(dev->net, "No PHY/fixed_PHY found\n"); |
| 2058 | return NULL; |
| 2059 | } |
| 2060 | netdev_dbg(dev->net, "Registered FIXED PHY\n"); |
| 2061 | dev->interface = PHY_INTERFACE_MODE_RGMII; |
| 2062 | ret = lan78xx_write_reg(dev, MAC_RGMII_ID, |
| 2063 | MAC_RGMII_ID_TXC_DELAY_EN_); |
| 2064 | ret = lan78xx_write_reg(dev, RGMII_TX_BYP_DLL, 0x3D00); |
| 2065 | ret = lan78xx_read_reg(dev, HW_CFG, &buf); |
| 2066 | buf |= HW_CFG_CLK125_EN_; |
| 2067 | buf |= HW_CFG_REFCLK25_EN_; |
| 2068 | ret = lan78xx_write_reg(dev, HW_CFG, buf); |
| 2069 | } else { |
Woojung Huh | 02dc1f3 | 2016-12-07 20:26:25 +0000 | [diff] [blame] | 2070 | if (!phydev->drv) { |
| 2071 | netdev_err(dev->net, "no PHY driver found\n"); |
Raghuram Chary J | 89b36fb | 2018-04-28 11:33:14 +0530 | [diff] [blame] | 2072 | return NULL; |
Woojung Huh | 02dc1f3 | 2016-12-07 20:26:25 +0000 | [diff] [blame] | 2073 | } |
Woojung Huh | 02dc1f3 | 2016-12-07 20:26:25 +0000 | [diff] [blame] | 2074 | dev->interface = PHY_INTERFACE_MODE_RGMII; |
Woojung Huh | 02dc1f3 | 2016-12-07 20:26:25 +0000 | [diff] [blame] | 2075 | /* external PHY fixup for KSZ9031RNX */ |
| 2076 | ret = phy_register_fixup_for_uid(PHY_KSZ9031RNX, 0xfffffff0, |
| 2077 | ksz9031rnx_fixup); |
| 2078 | if (ret < 0) { |
Raghuram Chary J | 7670ed7 | 2018-04-28 11:33:16 +0530 | [diff] [blame] | 2079 | netdev_err(dev->net, "Failed to register fixup for PHY_KSZ9031RNX\n"); |
Raghuram Chary J | 89b36fb | 2018-04-28 11:33:14 +0530 | [diff] [blame] | 2080 | return NULL; |
Woojung Huh | 02dc1f3 | 2016-12-07 20:26:25 +0000 | [diff] [blame] | 2081 | } |
| 2082 | /* external PHY fixup for LAN8835 */ |
| 2083 | ret = phy_register_fixup_for_uid(PHY_LAN8835, 0xfffffff0, |
| 2084 | lan8835_fixup); |
| 2085 | if (ret < 0) { |
Raghuram Chary J | 7670ed7 | 2018-04-28 11:33:16 +0530 | [diff] [blame] | 2086 | netdev_err(dev->net, "Failed to register fixup for PHY_LAN8835\n"); |
Raghuram Chary J | 89b36fb | 2018-04-28 11:33:14 +0530 | [diff] [blame] | 2087 | return NULL; |
Woojung Huh | 02dc1f3 | 2016-12-07 20:26:25 +0000 | [diff] [blame] | 2088 | } |
| 2089 | /* add more external PHY fixup here if needed */ |
| 2090 | |
| 2091 | phydev->is_internal = false; |
Raghuram Chary J | 89b36fb | 2018-04-28 11:33:14 +0530 | [diff] [blame] | 2092 | } |
| 2093 | return phydev; |
| 2094 | } |
| 2095 | |
| 2096 | static int lan78xx_phy_init(struct lan78xx_net *dev) |
| 2097 | { |
| 2098 | int ret; |
| 2099 | u32 mii_adv; |
| 2100 | struct phy_device *phydev; |
| 2101 | |
| 2102 | switch (dev->chipid) { |
| 2103 | case ID_REV_CHIP_ID_7801_: |
| 2104 | phydev = lan7801_phy_init(dev); |
| 2105 | if (!phydev) { |
| 2106 | netdev_err(dev->net, "lan7801: PHY Init Failed"); |
| 2107 | return -EIO; |
| 2108 | } |
| 2109 | break; |
| 2110 | |
| 2111 | case ID_REV_CHIP_ID_7800_: |
| 2112 | case ID_REV_CHIP_ID_7850_: |
| 2113 | phydev = phy_find_first(dev->mdiobus); |
| 2114 | if (!phydev) { |
| 2115 | netdev_err(dev->net, "no PHY found\n"); |
| 2116 | return -EIO; |
| 2117 | } |
| 2118 | phydev->is_internal = true; |
| 2119 | dev->interface = PHY_INTERFACE_MODE_GMII; |
| 2120 | break; |
| 2121 | |
| 2122 | default: |
| 2123 | netdev_err(dev->net, "Unknown CHIP ID found\n"); |
| 2124 | return -EIO; |
Woojung Huh | 02dc1f3 | 2016-12-07 20:26:25 +0000 | [diff] [blame] | 2125 | } |
| 2126 | |
Woojung Huh | cc89c32 | 2016-11-01 20:02:00 +0000 | [diff] [blame] | 2127 | /* if phyirq is not set, use polling mode in phylib */ |
| 2128 | if (dev->domain_data.phyirq > 0) |
| 2129 | phydev->irq = dev->domain_data.phyirq; |
| 2130 | else |
| 2131 | phydev->irq = 0; |
| 2132 | netdev_dbg(dev->net, "phydev->irq = %d\n", phydev->irq); |
Woojung.Huh@microchip.com | e495391 | 2016-01-27 22:57:52 +0000 | [diff] [blame] | 2133 | |
Woojung Huh | f6e3ef3 | 2016-11-17 22:10:02 +0000 | [diff] [blame] | 2134 | /* set to AUTOMDIX */ |
| 2135 | phydev->mdix = ETH_TP_MDI_AUTO; |
| 2136 | |
Woojung.Huh@microchip.com | ce85e13 | 2015-09-16 23:40:54 +0000 | [diff] [blame] | 2137 | ret = phy_connect_direct(dev->net, phydev, |
| 2138 | lan78xx_link_status_change, |
Woojung Huh | 02dc1f3 | 2016-12-07 20:26:25 +0000 | [diff] [blame] | 2139 | dev->interface); |
Woojung.Huh@microchip.com | ce85e13 | 2015-09-16 23:40:54 +0000 | [diff] [blame] | 2140 | if (ret) { |
| 2141 | netdev_err(dev->net, "can't attach PHY to %s\n", |
| 2142 | dev->mdiobus->id); |
Raghuram Chary J | 89b36fb | 2018-04-28 11:33:14 +0530 | [diff] [blame] | 2143 | if (dev->chipid == ID_REV_CHIP_ID_7801_) { |
| 2144 | if (phy_is_pseudo_fixed_link(phydev)) { |
| 2145 | fixed_phy_unregister(phydev); |
| 2146 | } else { |
| 2147 | phy_unregister_fixup_for_uid(PHY_KSZ9031RNX, |
| 2148 | 0xfffffff0); |
| 2149 | phy_unregister_fixup_for_uid(PHY_LAN8835, |
| 2150 | 0xfffffff0); |
| 2151 | } |
| 2152 | } |
Woojung.Huh@microchip.com | ce85e13 | 2015-09-16 23:40:54 +0000 | [diff] [blame] | 2153 | return -EIO; |
| 2154 | } |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 2155 | |
Woojung.Huh@microchip.com | ce85e13 | 2015-09-16 23:40:54 +0000 | [diff] [blame] | 2156 | /* MAC doesn't support 1000T Half */ |
Andrew Lunn | 41124fa | 2018-09-12 01:53:14 +0200 | [diff] [blame] | 2157 | phy_remove_link_mode(phydev, ETHTOOL_LINK_MODE_1000baseT_Half_BIT); |
Woojung.Huh@microchip.com | e270b2d | 2016-02-25 23:33:09 +0000 | [diff] [blame] | 2158 | |
Woojung.Huh@microchip.com | 349e0c5 | 2016-02-25 23:33:14 +0000 | [diff] [blame] | 2159 | /* support both flow controls */ |
| 2160 | dev->fc_request_control = (FLOW_CTRL_RX | FLOW_CTRL_TX); |
| 2161 | phydev->advertising &= ~(ADVERTISED_Pause | ADVERTISED_Asym_Pause); |
| 2162 | mii_adv = (u32)mii_advertise_flowctrl(dev->fc_request_control); |
| 2163 | phydev->advertising |= mii_adv_to_ethtool_adv_t(mii_adv); |
| 2164 | |
Phil Elwell | 1827b06 | 2018-04-19 17:59:39 +0100 | [diff] [blame] | 2165 | if (phydev->mdio.dev.of_node) { |
| 2166 | u32 reg; |
| 2167 | int len; |
| 2168 | |
| 2169 | len = of_property_count_elems_of_size(phydev->mdio.dev.of_node, |
| 2170 | "microchip,led-modes", |
| 2171 | sizeof(u32)); |
| 2172 | if (len >= 0) { |
| 2173 | /* Ensure the appropriate LEDs are enabled */ |
| 2174 | lan78xx_read_reg(dev, HW_CFG, ®); |
| 2175 | reg &= ~(HW_CFG_LED0_EN_ | |
| 2176 | HW_CFG_LED1_EN_ | |
| 2177 | HW_CFG_LED2_EN_ | |
| 2178 | HW_CFG_LED3_EN_); |
| 2179 | reg |= (len > 0) * HW_CFG_LED0_EN_ | |
| 2180 | (len > 1) * HW_CFG_LED1_EN_ | |
| 2181 | (len > 2) * HW_CFG_LED2_EN_ | |
| 2182 | (len > 3) * HW_CFG_LED3_EN_; |
| 2183 | lan78xx_write_reg(dev, HW_CFG, reg); |
| 2184 | } |
| 2185 | } |
| 2186 | |
Woojung.Huh@microchip.com | ce85e13 | 2015-09-16 23:40:54 +0000 | [diff] [blame] | 2187 | genphy_config_aneg(phydev); |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 2188 | |
Woojung.Huh@microchip.com | 349e0c5 | 2016-02-25 23:33:14 +0000 | [diff] [blame] | 2189 | dev->fc_autoneg = phydev->autoneg; |
| 2190 | |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 2191 | return 0; |
| 2192 | } |
| 2193 | |
| 2194 | static int lan78xx_set_rx_max_frame_length(struct lan78xx_net *dev, int size) |
| 2195 | { |
| 2196 | int ret = 0; |
| 2197 | u32 buf; |
| 2198 | bool rxenabled; |
| 2199 | |
| 2200 | ret = lan78xx_read_reg(dev, MAC_RX, &buf); |
| 2201 | |
| 2202 | rxenabled = ((buf & MAC_RX_RXEN_) != 0); |
| 2203 | |
| 2204 | if (rxenabled) { |
| 2205 | buf &= ~MAC_RX_RXEN_; |
| 2206 | ret = lan78xx_write_reg(dev, MAC_RX, buf); |
| 2207 | } |
| 2208 | |
| 2209 | /* add 4 to size for FCS */ |
| 2210 | buf &= ~MAC_RX_MAX_SIZE_MASK_; |
| 2211 | buf |= (((size + 4) << MAC_RX_MAX_SIZE_SHIFT_) & MAC_RX_MAX_SIZE_MASK_); |
| 2212 | |
| 2213 | ret = lan78xx_write_reg(dev, MAC_RX, buf); |
| 2214 | |
| 2215 | if (rxenabled) { |
| 2216 | buf |= MAC_RX_RXEN_; |
| 2217 | ret = lan78xx_write_reg(dev, MAC_RX, buf); |
| 2218 | } |
| 2219 | |
| 2220 | return 0; |
| 2221 | } |
| 2222 | |
| 2223 | static int unlink_urbs(struct lan78xx_net *dev, struct sk_buff_head *q) |
| 2224 | { |
| 2225 | struct sk_buff *skb; |
| 2226 | unsigned long flags; |
| 2227 | int count = 0; |
| 2228 | |
| 2229 | spin_lock_irqsave(&q->lock, flags); |
| 2230 | while (!skb_queue_empty(q)) { |
| 2231 | struct skb_data *entry; |
| 2232 | struct urb *urb; |
| 2233 | int ret; |
| 2234 | |
| 2235 | skb_queue_walk(q, skb) { |
| 2236 | entry = (struct skb_data *)skb->cb; |
| 2237 | if (entry->state != unlink_start) |
| 2238 | goto found; |
| 2239 | } |
| 2240 | break; |
| 2241 | found: |
| 2242 | entry->state = unlink_start; |
| 2243 | urb = entry->urb; |
| 2244 | |
| 2245 | /* Get reference count of the URB to avoid it to be |
| 2246 | * freed during usb_unlink_urb, which may trigger |
| 2247 | * use-after-free problem inside usb_unlink_urb since |
| 2248 | * usb_unlink_urb is always racing with .complete |
| 2249 | * handler(include defer_bh). |
| 2250 | */ |
| 2251 | usb_get_urb(urb); |
| 2252 | spin_unlock_irqrestore(&q->lock, flags); |
| 2253 | /* during some PM-driven resume scenarios, |
| 2254 | * these (async) unlinks complete immediately |
| 2255 | */ |
| 2256 | ret = usb_unlink_urb(urb); |
| 2257 | if (ret != -EINPROGRESS && ret != 0) |
| 2258 | netdev_dbg(dev->net, "unlink urb err, %d\n", ret); |
| 2259 | else |
| 2260 | count++; |
| 2261 | usb_put_urb(urb); |
| 2262 | spin_lock_irqsave(&q->lock, flags); |
| 2263 | } |
| 2264 | spin_unlock_irqrestore(&q->lock, flags); |
| 2265 | return count; |
| 2266 | } |
| 2267 | |
| 2268 | static int lan78xx_change_mtu(struct net_device *netdev, int new_mtu) |
| 2269 | { |
| 2270 | struct lan78xx_net *dev = netdev_priv(netdev); |
| 2271 | int ll_mtu = new_mtu + netdev->hard_header_len; |
| 2272 | int old_hard_mtu = dev->hard_mtu; |
| 2273 | int old_rx_urb_size = dev->rx_urb_size; |
| 2274 | int ret; |
| 2275 | |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 2276 | /* no second zero-length packet read wanted after mtu-sized packets */ |
| 2277 | if ((ll_mtu % dev->maxpacket) == 0) |
| 2278 | return -EDOM; |
| 2279 | |
Dave Stevenson | 2259b7a | 2018-06-25 15:07:12 +0100 | [diff] [blame] | 2280 | ret = lan78xx_set_rx_max_frame_length(dev, new_mtu + VLAN_ETH_HLEN); |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 2281 | |
| 2282 | netdev->mtu = new_mtu; |
| 2283 | |
| 2284 | dev->hard_mtu = netdev->mtu + netdev->hard_header_len; |
| 2285 | if (dev->rx_urb_size == old_hard_mtu) { |
| 2286 | dev->rx_urb_size = dev->hard_mtu; |
| 2287 | if (dev->rx_urb_size > old_rx_urb_size) { |
| 2288 | if (netif_running(dev->net)) { |
| 2289 | unlink_urbs(dev, &dev->rxq); |
| 2290 | tasklet_schedule(&dev->bh); |
| 2291 | } |
| 2292 | } |
| 2293 | } |
| 2294 | |
| 2295 | return 0; |
| 2296 | } |
| 2297 | |
Baoyou Xie | e0c79ff | 2016-09-06 16:19:02 +0800 | [diff] [blame] | 2298 | static int lan78xx_set_mac_addr(struct net_device *netdev, void *p) |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 2299 | { |
| 2300 | struct lan78xx_net *dev = netdev_priv(netdev); |
| 2301 | struct sockaddr *addr = p; |
| 2302 | u32 addr_lo, addr_hi; |
| 2303 | int ret; |
| 2304 | |
| 2305 | if (netif_running(netdev)) |
| 2306 | return -EBUSY; |
| 2307 | |
| 2308 | if (!is_valid_ether_addr(addr->sa_data)) |
| 2309 | return -EADDRNOTAVAIL; |
| 2310 | |
| 2311 | ether_addr_copy(netdev->dev_addr, addr->sa_data); |
| 2312 | |
| 2313 | addr_lo = netdev->dev_addr[0] | |
| 2314 | netdev->dev_addr[1] << 8 | |
| 2315 | netdev->dev_addr[2] << 16 | |
| 2316 | netdev->dev_addr[3] << 24; |
| 2317 | addr_hi = netdev->dev_addr[4] | |
| 2318 | netdev->dev_addr[5] << 8; |
| 2319 | |
| 2320 | ret = lan78xx_write_reg(dev, RX_ADDRL, addr_lo); |
| 2321 | ret = lan78xx_write_reg(dev, RX_ADDRH, addr_hi); |
| 2322 | |
| 2323 | return 0; |
| 2324 | } |
| 2325 | |
| 2326 | /* Enable or disable Rx checksum offload engine */ |
| 2327 | static int lan78xx_set_features(struct net_device *netdev, |
| 2328 | netdev_features_t features) |
| 2329 | { |
| 2330 | struct lan78xx_net *dev = netdev_priv(netdev); |
| 2331 | struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]); |
| 2332 | unsigned long flags; |
| 2333 | int ret; |
| 2334 | |
| 2335 | spin_lock_irqsave(&pdata->rfe_ctl_lock, flags); |
| 2336 | |
| 2337 | if (features & NETIF_F_RXCSUM) { |
| 2338 | pdata->rfe_ctl |= RFE_CTL_TCPUDP_COE_ | RFE_CTL_IP_COE_; |
| 2339 | pdata->rfe_ctl |= RFE_CTL_ICMP_COE_ | RFE_CTL_IGMP_COE_; |
| 2340 | } else { |
| 2341 | pdata->rfe_ctl &= ~(RFE_CTL_TCPUDP_COE_ | RFE_CTL_IP_COE_); |
| 2342 | pdata->rfe_ctl &= ~(RFE_CTL_ICMP_COE_ | RFE_CTL_IGMP_COE_); |
| 2343 | } |
| 2344 | |
| 2345 | if (features & NETIF_F_HW_VLAN_CTAG_RX) |
Dave Stevenson | ec21ecf | 2018-06-25 15:07:14 +0100 | [diff] [blame] | 2346 | pdata->rfe_ctl |= RFE_CTL_VLAN_STRIP_; |
| 2347 | else |
| 2348 | pdata->rfe_ctl &= ~RFE_CTL_VLAN_STRIP_; |
| 2349 | |
Dave Stevenson | 4a27327 | 2018-06-25 15:07:13 +0100 | [diff] [blame] | 2350 | if (features & NETIF_F_HW_VLAN_CTAG_FILTER) |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 2351 | pdata->rfe_ctl |= RFE_CTL_VLAN_FILTER_; |
| 2352 | else |
| 2353 | pdata->rfe_ctl &= ~RFE_CTL_VLAN_FILTER_; |
| 2354 | |
| 2355 | spin_unlock_irqrestore(&pdata->rfe_ctl_lock, flags); |
| 2356 | |
| 2357 | ret = lan78xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl); |
| 2358 | |
| 2359 | return 0; |
| 2360 | } |
| 2361 | |
| 2362 | static void lan78xx_deferred_vlan_write(struct work_struct *param) |
| 2363 | { |
| 2364 | struct lan78xx_priv *pdata = |
| 2365 | container_of(param, struct lan78xx_priv, set_vlan); |
| 2366 | struct lan78xx_net *dev = pdata->dev; |
| 2367 | |
| 2368 | lan78xx_dataport_write(dev, DP_SEL_RSEL_VLAN_DA_, 0, |
| 2369 | DP_SEL_VHF_VLAN_LEN, pdata->vlan_table); |
| 2370 | } |
| 2371 | |
| 2372 | static int lan78xx_vlan_rx_add_vid(struct net_device *netdev, |
| 2373 | __be16 proto, u16 vid) |
| 2374 | { |
| 2375 | struct lan78xx_net *dev = netdev_priv(netdev); |
| 2376 | struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]); |
| 2377 | u16 vid_bit_index; |
| 2378 | u16 vid_dword_index; |
| 2379 | |
| 2380 | vid_dword_index = (vid >> 5) & 0x7F; |
| 2381 | vid_bit_index = vid & 0x1F; |
| 2382 | |
| 2383 | pdata->vlan_table[vid_dword_index] |= (1 << vid_bit_index); |
| 2384 | |
| 2385 | /* defer register writes to a sleepable context */ |
| 2386 | schedule_work(&pdata->set_vlan); |
| 2387 | |
| 2388 | return 0; |
| 2389 | } |
| 2390 | |
| 2391 | static int lan78xx_vlan_rx_kill_vid(struct net_device *netdev, |
| 2392 | __be16 proto, u16 vid) |
| 2393 | { |
| 2394 | struct lan78xx_net *dev = netdev_priv(netdev); |
| 2395 | struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]); |
| 2396 | u16 vid_bit_index; |
| 2397 | u16 vid_dword_index; |
| 2398 | |
| 2399 | vid_dword_index = (vid >> 5) & 0x7F; |
| 2400 | vid_bit_index = vid & 0x1F; |
| 2401 | |
| 2402 | pdata->vlan_table[vid_dword_index] &= ~(1 << vid_bit_index); |
| 2403 | |
| 2404 | /* defer register writes to a sleepable context */ |
| 2405 | schedule_work(&pdata->set_vlan); |
| 2406 | |
| 2407 | return 0; |
| 2408 | } |
| 2409 | |
| 2410 | static void lan78xx_init_ltm(struct lan78xx_net *dev) |
| 2411 | { |
| 2412 | int ret; |
| 2413 | u32 buf; |
| 2414 | u32 regs[6] = { 0 }; |
| 2415 | |
| 2416 | ret = lan78xx_read_reg(dev, USB_CFG1, &buf); |
| 2417 | if (buf & USB_CFG1_LTM_ENABLE_) { |
| 2418 | u8 temp[2]; |
| 2419 | /* Get values from EEPROM first */ |
| 2420 | if (lan78xx_read_eeprom(dev, 0x3F, 2, temp) == 0) { |
| 2421 | if (temp[0] == 24) { |
| 2422 | ret = lan78xx_read_raw_eeprom(dev, |
| 2423 | temp[1] * 2, |
| 2424 | 24, |
| 2425 | (u8 *)regs); |
| 2426 | if (ret < 0) |
| 2427 | return; |
| 2428 | } |
| 2429 | } else if (lan78xx_read_otp(dev, 0x3F, 2, temp) == 0) { |
| 2430 | if (temp[0] == 24) { |
| 2431 | ret = lan78xx_read_raw_otp(dev, |
| 2432 | temp[1] * 2, |
| 2433 | 24, |
| 2434 | (u8 *)regs); |
| 2435 | if (ret < 0) |
| 2436 | return; |
| 2437 | } |
| 2438 | } |
| 2439 | } |
| 2440 | |
| 2441 | lan78xx_write_reg(dev, LTM_BELT_IDLE0, regs[0]); |
| 2442 | lan78xx_write_reg(dev, LTM_BELT_IDLE1, regs[1]); |
| 2443 | lan78xx_write_reg(dev, LTM_BELT_ACT0, regs[2]); |
| 2444 | lan78xx_write_reg(dev, LTM_BELT_ACT1, regs[3]); |
| 2445 | lan78xx_write_reg(dev, LTM_INACTIVE0, regs[4]); |
| 2446 | lan78xx_write_reg(dev, LTM_INACTIVE1, regs[5]); |
| 2447 | } |
| 2448 | |
| 2449 | static int lan78xx_reset(struct lan78xx_net *dev) |
| 2450 | { |
| 2451 | struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]); |
| 2452 | u32 buf; |
| 2453 | int ret = 0; |
| 2454 | unsigned long timeout; |
Raghuram Chary J | e69647a | 2018-03-23 15:48:08 +0530 | [diff] [blame] | 2455 | u8 sig; |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 2456 | |
| 2457 | ret = lan78xx_read_reg(dev, HW_CFG, &buf); |
| 2458 | buf |= HW_CFG_LRST_; |
| 2459 | ret = lan78xx_write_reg(dev, HW_CFG, buf); |
| 2460 | |
| 2461 | timeout = jiffies + HZ; |
| 2462 | do { |
| 2463 | mdelay(1); |
| 2464 | ret = lan78xx_read_reg(dev, HW_CFG, &buf); |
| 2465 | if (time_after(jiffies, timeout)) { |
| 2466 | netdev_warn(dev->net, |
| 2467 | "timeout on completion of LiteReset"); |
| 2468 | return -EIO; |
| 2469 | } |
| 2470 | } while (buf & HW_CFG_LRST_); |
| 2471 | |
| 2472 | lan78xx_init_mac_address(dev); |
| 2473 | |
Woojung.Huh@microchip.com | ce85e13 | 2015-09-16 23:40:54 +0000 | [diff] [blame] | 2474 | /* save DEVID for later usage */ |
| 2475 | ret = lan78xx_read_reg(dev, ID_REV, &buf); |
Woojung.Huh@microchip.com | 87177ba | 2016-02-25 23:33:07 +0000 | [diff] [blame] | 2476 | dev->chipid = (buf & ID_REV_CHIP_ID_MASK_) >> 16; |
| 2477 | dev->chiprev = buf & ID_REV_CHIP_REV_MASK_; |
Woojung.Huh@microchip.com | ce85e13 | 2015-09-16 23:40:54 +0000 | [diff] [blame] | 2478 | |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 2479 | /* Respond to the IN token with a NAK */ |
| 2480 | ret = lan78xx_read_reg(dev, USB_CFG0, &buf); |
| 2481 | buf |= USB_CFG_BIR_; |
| 2482 | ret = lan78xx_write_reg(dev, USB_CFG0, buf); |
| 2483 | |
| 2484 | /* Init LTM */ |
| 2485 | lan78xx_init_ltm(dev); |
| 2486 | |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 2487 | if (dev->udev->speed == USB_SPEED_SUPER) { |
| 2488 | buf = DEFAULT_BURST_CAP_SIZE / SS_USB_PKT_SIZE; |
| 2489 | dev->rx_urb_size = DEFAULT_BURST_CAP_SIZE; |
| 2490 | dev->rx_qlen = 4; |
| 2491 | dev->tx_qlen = 4; |
| 2492 | } else if (dev->udev->speed == USB_SPEED_HIGH) { |
| 2493 | buf = DEFAULT_BURST_CAP_SIZE / HS_USB_PKT_SIZE; |
| 2494 | dev->rx_urb_size = DEFAULT_BURST_CAP_SIZE; |
| 2495 | dev->rx_qlen = RX_MAX_QUEUE_MEMORY / dev->rx_urb_size; |
| 2496 | dev->tx_qlen = RX_MAX_QUEUE_MEMORY / dev->hard_mtu; |
| 2497 | } else { |
| 2498 | buf = DEFAULT_BURST_CAP_SIZE / FS_USB_PKT_SIZE; |
| 2499 | dev->rx_urb_size = DEFAULT_BURST_CAP_SIZE; |
| 2500 | dev->rx_qlen = 4; |
Yuiko Oshino | a5b1379 | 2018-01-15 13:24:28 -0500 | [diff] [blame] | 2501 | dev->tx_qlen = 4; |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 2502 | } |
| 2503 | |
| 2504 | ret = lan78xx_write_reg(dev, BURST_CAP, buf); |
| 2505 | ret = lan78xx_write_reg(dev, BULK_IN_DLY, DEFAULT_BULK_IN_DELAY); |
| 2506 | |
| 2507 | ret = lan78xx_read_reg(dev, HW_CFG, &buf); |
| 2508 | buf |= HW_CFG_MEF_; |
| 2509 | ret = lan78xx_write_reg(dev, HW_CFG, buf); |
| 2510 | |
| 2511 | ret = lan78xx_read_reg(dev, USB_CFG0, &buf); |
| 2512 | buf |= USB_CFG_BCE_; |
| 2513 | ret = lan78xx_write_reg(dev, USB_CFG0, buf); |
| 2514 | |
| 2515 | /* set FIFO sizes */ |
| 2516 | buf = (MAX_RX_FIFO_SIZE - 512) / 512; |
| 2517 | ret = lan78xx_write_reg(dev, FCT_RX_FIFO_END, buf); |
| 2518 | |
| 2519 | buf = (MAX_TX_FIFO_SIZE - 512) / 512; |
| 2520 | ret = lan78xx_write_reg(dev, FCT_TX_FIFO_END, buf); |
| 2521 | |
| 2522 | ret = lan78xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL_); |
| 2523 | ret = lan78xx_write_reg(dev, FLOW, 0); |
| 2524 | ret = lan78xx_write_reg(dev, FCT_FLOW, 0); |
| 2525 | |
| 2526 | /* Don't need rfe_ctl_lock during initialisation */ |
| 2527 | ret = lan78xx_read_reg(dev, RFE_CTL, &pdata->rfe_ctl); |
| 2528 | pdata->rfe_ctl |= RFE_CTL_BCAST_EN_ | RFE_CTL_DA_PERFECT_; |
| 2529 | ret = lan78xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl); |
| 2530 | |
| 2531 | /* Enable or disable checksum offload engines */ |
| 2532 | lan78xx_set_features(dev->net, dev->net->features); |
| 2533 | |
| 2534 | lan78xx_set_multicast(dev->net); |
| 2535 | |
| 2536 | /* reset PHY */ |
| 2537 | ret = lan78xx_read_reg(dev, PMT_CTL, &buf); |
| 2538 | buf |= PMT_CTL_PHY_RST_; |
| 2539 | ret = lan78xx_write_reg(dev, PMT_CTL, buf); |
| 2540 | |
| 2541 | timeout = jiffies + HZ; |
| 2542 | do { |
| 2543 | mdelay(1); |
| 2544 | ret = lan78xx_read_reg(dev, PMT_CTL, &buf); |
| 2545 | if (time_after(jiffies, timeout)) { |
| 2546 | netdev_warn(dev->net, "timeout waiting for PHY Reset"); |
| 2547 | return -EIO; |
| 2548 | } |
Woojung.Huh@microchip.com | 6c595b0 | 2015-09-16 23:40:39 +0000 | [diff] [blame] | 2549 | } while ((buf & PMT_CTL_PHY_RST_) || !(buf & PMT_CTL_READY_)); |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 2550 | |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 2551 | ret = lan78xx_read_reg(dev, MAC_CR, &buf); |
Woojung Huh | 02dc1f3 | 2016-12-07 20:26:25 +0000 | [diff] [blame] | 2552 | /* LAN7801 only has RGMII mode */ |
| 2553 | if (dev->chipid == ID_REV_CHIP_ID_7801_) |
| 2554 | buf &= ~MAC_CR_GMII_EN_; |
Raghuram Chary J | e69647a | 2018-03-23 15:48:08 +0530 | [diff] [blame] | 2555 | |
| 2556 | if (dev->chipid == ID_REV_CHIP_ID_7800_) { |
| 2557 | ret = lan78xx_read_raw_eeprom(dev, 0, 1, &sig); |
| 2558 | if (!ret && sig != EEPROM_INDICATOR) { |
| 2559 | /* Implies there is no external eeprom. Set mac speed */ |
| 2560 | netdev_info(dev->net, "No External EEPROM. Setting MAC Speed\n"); |
| 2561 | buf |= MAC_CR_AUTO_DUPLEX_ | MAC_CR_AUTO_SPEED_; |
| 2562 | } |
| 2563 | } |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 2564 | ret = lan78xx_write_reg(dev, MAC_CR, buf); |
| 2565 | |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 2566 | ret = lan78xx_read_reg(dev, MAC_TX, &buf); |
| 2567 | buf |= MAC_TX_TXEN_; |
| 2568 | ret = lan78xx_write_reg(dev, MAC_TX, buf); |
| 2569 | |
| 2570 | ret = lan78xx_read_reg(dev, FCT_TX_CTL, &buf); |
| 2571 | buf |= FCT_TX_CTL_EN_; |
| 2572 | ret = lan78xx_write_reg(dev, FCT_TX_CTL, buf); |
| 2573 | |
Dave Stevenson | 2259b7a | 2018-06-25 15:07:12 +0100 | [diff] [blame] | 2574 | ret = lan78xx_set_rx_max_frame_length(dev, |
| 2575 | dev->net->mtu + VLAN_ETH_HLEN); |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 2576 | |
| 2577 | ret = lan78xx_read_reg(dev, MAC_RX, &buf); |
| 2578 | buf |= MAC_RX_RXEN_; |
| 2579 | ret = lan78xx_write_reg(dev, MAC_RX, buf); |
| 2580 | |
| 2581 | ret = lan78xx_read_reg(dev, FCT_RX_CTL, &buf); |
| 2582 | buf |= FCT_RX_CTL_EN_; |
| 2583 | ret = lan78xx_write_reg(dev, FCT_RX_CTL, buf); |
| 2584 | |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 2585 | return 0; |
| 2586 | } |
| 2587 | |
Woojung Huh | 20ff556 | 2016-03-16 22:10:40 +0000 | [diff] [blame] | 2588 | static void lan78xx_init_stats(struct lan78xx_net *dev) |
| 2589 | { |
| 2590 | u32 *p; |
| 2591 | int i; |
| 2592 | |
| 2593 | /* initialize for stats update |
| 2594 | * some counters are 20bits and some are 32bits |
| 2595 | */ |
| 2596 | p = (u32 *)&dev->stats.rollover_max; |
| 2597 | for (i = 0; i < (sizeof(dev->stats.rollover_max) / (sizeof(u32))); i++) |
| 2598 | p[i] = 0xFFFFF; |
| 2599 | |
| 2600 | dev->stats.rollover_max.rx_unicast_byte_count = 0xFFFFFFFF; |
| 2601 | dev->stats.rollover_max.rx_broadcast_byte_count = 0xFFFFFFFF; |
| 2602 | dev->stats.rollover_max.rx_multicast_byte_count = 0xFFFFFFFF; |
| 2603 | dev->stats.rollover_max.eee_rx_lpi_transitions = 0xFFFFFFFF; |
| 2604 | dev->stats.rollover_max.eee_rx_lpi_time = 0xFFFFFFFF; |
| 2605 | dev->stats.rollover_max.tx_unicast_byte_count = 0xFFFFFFFF; |
| 2606 | dev->stats.rollover_max.tx_broadcast_byte_count = 0xFFFFFFFF; |
| 2607 | dev->stats.rollover_max.tx_multicast_byte_count = 0xFFFFFFFF; |
| 2608 | dev->stats.rollover_max.eee_tx_lpi_transitions = 0xFFFFFFFF; |
| 2609 | dev->stats.rollover_max.eee_tx_lpi_time = 0xFFFFFFFF; |
| 2610 | |
Phil Elwell | fed5607 | 2018-04-11 12:02:47 +0100 | [diff] [blame] | 2611 | set_bit(EVENT_STAT_UPDATE, &dev->flags); |
Woojung Huh | 20ff556 | 2016-03-16 22:10:40 +0000 | [diff] [blame] | 2612 | } |
| 2613 | |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 2614 | static int lan78xx_open(struct net_device *net) |
| 2615 | { |
| 2616 | struct lan78xx_net *dev = netdev_priv(net); |
| 2617 | int ret; |
| 2618 | |
| 2619 | ret = usb_autopm_get_interface(dev->intf); |
| 2620 | if (ret < 0) |
| 2621 | goto out; |
| 2622 | |
Alexander Graf | 92571a1 | 2018-04-04 00:19:35 +0200 | [diff] [blame] | 2623 | phy_start(net->phydev); |
| 2624 | |
| 2625 | netif_dbg(dev, ifup, dev->net, "phy initialised successfully"); |
Woojung.Huh@microchip.com | ce85e13 | 2015-09-16 23:40:54 +0000 | [diff] [blame] | 2626 | |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 2627 | /* for Link Check */ |
| 2628 | if (dev->urb_intr) { |
| 2629 | ret = usb_submit_urb(dev->urb_intr, GFP_KERNEL); |
| 2630 | if (ret < 0) { |
| 2631 | netif_err(dev, ifup, dev->net, |
| 2632 | "intr submit %d\n", ret); |
| 2633 | goto done; |
| 2634 | } |
| 2635 | } |
| 2636 | |
Woojung Huh | 20ff556 | 2016-03-16 22:10:40 +0000 | [diff] [blame] | 2637 | lan78xx_init_stats(dev); |
| 2638 | |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 2639 | set_bit(EVENT_DEV_OPEN, &dev->flags); |
| 2640 | |
| 2641 | netif_start_queue(net); |
| 2642 | |
| 2643 | dev->link_on = false; |
| 2644 | |
| 2645 | lan78xx_defer_kevent(dev, EVENT_LINK_RESET); |
| 2646 | done: |
| 2647 | usb_autopm_put_interface(dev->intf); |
| 2648 | |
| 2649 | out: |
| 2650 | return ret; |
| 2651 | } |
| 2652 | |
| 2653 | static void lan78xx_terminate_urbs(struct lan78xx_net *dev) |
| 2654 | { |
| 2655 | DECLARE_WAIT_QUEUE_HEAD_ONSTACK(unlink_wakeup); |
| 2656 | DECLARE_WAITQUEUE(wait, current); |
| 2657 | int temp; |
| 2658 | |
| 2659 | /* ensure there are no more active urbs */ |
| 2660 | add_wait_queue(&unlink_wakeup, &wait); |
| 2661 | set_current_state(TASK_UNINTERRUPTIBLE); |
| 2662 | dev->wait = &unlink_wakeup; |
| 2663 | temp = unlink_urbs(dev, &dev->txq) + unlink_urbs(dev, &dev->rxq); |
| 2664 | |
| 2665 | /* maybe wait for deletions to finish. */ |
| 2666 | while (!skb_queue_empty(&dev->rxq) && |
| 2667 | !skb_queue_empty(&dev->txq) && |
| 2668 | !skb_queue_empty(&dev->done)) { |
| 2669 | schedule_timeout(msecs_to_jiffies(UNLINK_TIMEOUT_MS)); |
| 2670 | set_current_state(TASK_UNINTERRUPTIBLE); |
| 2671 | netif_dbg(dev, ifdown, dev->net, |
| 2672 | "waited for %d urb completions\n", temp); |
| 2673 | } |
| 2674 | set_current_state(TASK_RUNNING); |
| 2675 | dev->wait = NULL; |
| 2676 | remove_wait_queue(&unlink_wakeup, &wait); |
| 2677 | } |
| 2678 | |
Baoyou Xie | e0c79ff | 2016-09-06 16:19:02 +0800 | [diff] [blame] | 2679 | static int lan78xx_stop(struct net_device *net) |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 2680 | { |
Stefan Wahren | 51ceac9 | 2018-09-04 19:29:12 +0200 | [diff] [blame] | 2681 | struct lan78xx_net *dev = netdev_priv(net); |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 2682 | |
Woojung Huh | 20ff556 | 2016-03-16 22:10:40 +0000 | [diff] [blame] | 2683 | if (timer_pending(&dev->stat_monitor)) |
| 2684 | del_timer_sync(&dev->stat_monitor); |
| 2685 | |
Alexander Graf | 92571a1 | 2018-04-04 00:19:35 +0200 | [diff] [blame] | 2686 | if (net->phydev) |
| 2687 | phy_stop(net->phydev); |
Woojung.Huh@microchip.com | ce85e13 | 2015-09-16 23:40:54 +0000 | [diff] [blame] | 2688 | |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 2689 | clear_bit(EVENT_DEV_OPEN, &dev->flags); |
| 2690 | netif_stop_queue(net); |
| 2691 | |
| 2692 | netif_info(dev, ifdown, dev->net, |
| 2693 | "stop stats: rx/tx %lu/%lu, errs %lu/%lu\n", |
| 2694 | net->stats.rx_packets, net->stats.tx_packets, |
| 2695 | net->stats.rx_errors, net->stats.tx_errors); |
| 2696 | |
| 2697 | lan78xx_terminate_urbs(dev); |
| 2698 | |
| 2699 | usb_kill_urb(dev->urb_intr); |
| 2700 | |
| 2701 | skb_queue_purge(&dev->rxq_pause); |
| 2702 | |
| 2703 | /* deferred work (task, timer, softirq) must also stop. |
| 2704 | * can't flush_scheduled_work() until we drop rtnl (later), |
| 2705 | * else workers could deadlock; so make workers a NOP. |
| 2706 | */ |
| 2707 | dev->flags = 0; |
| 2708 | cancel_delayed_work_sync(&dev->wq); |
| 2709 | tasklet_kill(&dev->bh); |
| 2710 | |
| 2711 | usb_autopm_put_interface(dev->intf); |
| 2712 | |
| 2713 | return 0; |
| 2714 | } |
| 2715 | |
| 2716 | static int lan78xx_linearize(struct sk_buff *skb) |
| 2717 | { |
| 2718 | return skb_linearize(skb); |
| 2719 | } |
| 2720 | |
| 2721 | static struct sk_buff *lan78xx_tx_prep(struct lan78xx_net *dev, |
| 2722 | struct sk_buff *skb, gfp_t flags) |
| 2723 | { |
| 2724 | u32 tx_cmd_a, tx_cmd_b; |
| 2725 | |
Eric Dumazet | d4ca735 | 2017-04-19 09:59:24 -0700 | [diff] [blame] | 2726 | if (skb_cow_head(skb, TX_OVERHEAD)) { |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 2727 | dev_kfree_skb_any(skb); |
Eric Dumazet | d4ca735 | 2017-04-19 09:59:24 -0700 | [diff] [blame] | 2728 | return NULL; |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 2729 | } |
| 2730 | |
| 2731 | if (lan78xx_linearize(skb) < 0) |
| 2732 | return NULL; |
| 2733 | |
| 2734 | tx_cmd_a = (u32)(skb->len & TX_CMD_A_LEN_MASK_) | TX_CMD_A_FCS_; |
| 2735 | |
| 2736 | if (skb->ip_summed == CHECKSUM_PARTIAL) |
| 2737 | tx_cmd_a |= TX_CMD_A_IPE_ | TX_CMD_A_TPE_; |
| 2738 | |
| 2739 | tx_cmd_b = 0; |
| 2740 | if (skb_is_gso(skb)) { |
| 2741 | u16 mss = max(skb_shinfo(skb)->gso_size, TX_CMD_B_MSS_MIN_); |
| 2742 | |
| 2743 | tx_cmd_b = (mss << TX_CMD_B_MSS_SHIFT_) & TX_CMD_B_MSS_MASK_; |
| 2744 | |
| 2745 | tx_cmd_a |= TX_CMD_A_LSO_; |
| 2746 | } |
| 2747 | |
| 2748 | if (skb_vlan_tag_present(skb)) { |
| 2749 | tx_cmd_a |= TX_CMD_A_IVTG_; |
| 2750 | tx_cmd_b |= skb_vlan_tag_get(skb) & TX_CMD_B_VTAG_MASK_; |
| 2751 | } |
| 2752 | |
| 2753 | skb_push(skb, 4); |
| 2754 | cpu_to_le32s(&tx_cmd_b); |
| 2755 | memcpy(skb->data, &tx_cmd_b, 4); |
| 2756 | |
| 2757 | skb_push(skb, 4); |
| 2758 | cpu_to_le32s(&tx_cmd_a); |
| 2759 | memcpy(skb->data, &tx_cmd_a, 4); |
| 2760 | |
| 2761 | return skb; |
| 2762 | } |
| 2763 | |
| 2764 | static enum skb_state defer_bh(struct lan78xx_net *dev, struct sk_buff *skb, |
| 2765 | struct sk_buff_head *list, enum skb_state state) |
| 2766 | { |
| 2767 | unsigned long flags; |
| 2768 | enum skb_state old_state; |
| 2769 | struct skb_data *entry = (struct skb_data *)skb->cb; |
| 2770 | |
| 2771 | spin_lock_irqsave(&list->lock, flags); |
| 2772 | old_state = entry->state; |
| 2773 | entry->state = state; |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 2774 | |
| 2775 | __skb_unlink(skb, list); |
| 2776 | spin_unlock(&list->lock); |
| 2777 | spin_lock(&dev->done.lock); |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 2778 | |
| 2779 | __skb_queue_tail(&dev->done, skb); |
| 2780 | if (skb_queue_len(&dev->done) == 1) |
| 2781 | tasklet_schedule(&dev->bh); |
| 2782 | spin_unlock_irqrestore(&dev->done.lock, flags); |
| 2783 | |
| 2784 | return old_state; |
| 2785 | } |
| 2786 | |
| 2787 | static void tx_complete(struct urb *urb) |
| 2788 | { |
| 2789 | struct sk_buff *skb = (struct sk_buff *)urb->context; |
| 2790 | struct skb_data *entry = (struct skb_data *)skb->cb; |
| 2791 | struct lan78xx_net *dev = entry->dev; |
| 2792 | |
| 2793 | if (urb->status == 0) { |
Woojung Huh | 74d79a2 | 2016-04-25 22:22:32 +0000 | [diff] [blame] | 2794 | dev->net->stats.tx_packets += entry->num_of_packet; |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 2795 | dev->net->stats.tx_bytes += entry->length; |
| 2796 | } else { |
| 2797 | dev->net->stats.tx_errors++; |
| 2798 | |
| 2799 | switch (urb->status) { |
| 2800 | case -EPIPE: |
| 2801 | lan78xx_defer_kevent(dev, EVENT_TX_HALT); |
| 2802 | break; |
| 2803 | |
| 2804 | /* software-driven interface shutdown */ |
| 2805 | case -ECONNRESET: |
| 2806 | case -ESHUTDOWN: |
| 2807 | break; |
| 2808 | |
| 2809 | case -EPROTO: |
| 2810 | case -ETIME: |
| 2811 | case -EILSEQ: |
| 2812 | netif_stop_queue(dev->net); |
| 2813 | break; |
| 2814 | default: |
| 2815 | netif_dbg(dev, tx_err, dev->net, |
| 2816 | "tx err %d\n", entry->urb->status); |
| 2817 | break; |
| 2818 | } |
| 2819 | } |
| 2820 | |
| 2821 | usb_autopm_put_interface_async(dev->intf); |
| 2822 | |
Woojung.Huh@microchip.com | 81c38e8 | 2015-08-11 15:21:41 +0000 | [diff] [blame] | 2823 | defer_bh(dev, skb, &dev->txq, tx_done); |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 2824 | } |
| 2825 | |
| 2826 | static void lan78xx_queue_skb(struct sk_buff_head *list, |
| 2827 | struct sk_buff *newsk, enum skb_state state) |
| 2828 | { |
| 2829 | struct skb_data *entry = (struct skb_data *)newsk->cb; |
| 2830 | |
| 2831 | __skb_queue_tail(list, newsk); |
| 2832 | entry->state = state; |
| 2833 | } |
| 2834 | |
Baoyou Xie | e0c79ff | 2016-09-06 16:19:02 +0800 | [diff] [blame] | 2835 | static netdev_tx_t |
| 2836 | lan78xx_start_xmit(struct sk_buff *skb, struct net_device *net) |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 2837 | { |
| 2838 | struct lan78xx_net *dev = netdev_priv(net); |
Woojung.Huh@microchip.com | 81c38e8 | 2015-08-11 15:21:41 +0000 | [diff] [blame] | 2839 | struct sk_buff *skb2 = NULL; |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 2840 | |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 2841 | if (skb) { |
Woojung.Huh@microchip.com | 81c38e8 | 2015-08-11 15:21:41 +0000 | [diff] [blame] | 2842 | skb_tx_timestamp(skb); |
| 2843 | skb2 = lan78xx_tx_prep(dev, skb, GFP_ATOMIC); |
| 2844 | } |
| 2845 | |
| 2846 | if (skb2) { |
| 2847 | skb_queue_tail(&dev->txq_pend, skb2); |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 2848 | |
Woojung.Huh@microchip.com | 4b2a4a9 | 2016-01-27 22:57:54 +0000 | [diff] [blame] | 2849 | /* throttle TX patch at slower than SUPER SPEED USB */ |
| 2850 | if ((dev->udev->speed < USB_SPEED_SUPER) && |
| 2851 | (skb_queue_len(&dev->txq_pend) > 10)) |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 2852 | netif_stop_queue(net); |
| 2853 | } else { |
| 2854 | netif_dbg(dev, tx_err, dev->net, |
| 2855 | "lan78xx_tx_prep return NULL\n"); |
| 2856 | dev->net->stats.tx_errors++; |
| 2857 | dev->net->stats.tx_dropped++; |
| 2858 | } |
| 2859 | |
| 2860 | tasklet_schedule(&dev->bh); |
| 2861 | |
| 2862 | return NETDEV_TX_OK; |
| 2863 | } |
| 2864 | |
Baoyou Xie | e0c79ff | 2016-09-06 16:19:02 +0800 | [diff] [blame] | 2865 | static int |
| 2866 | lan78xx_get_endpoints(struct lan78xx_net *dev, struct usb_interface *intf) |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 2867 | { |
| 2868 | int tmp; |
| 2869 | struct usb_host_interface *alt = NULL; |
| 2870 | struct usb_host_endpoint *in = NULL, *out = NULL; |
| 2871 | struct usb_host_endpoint *status = NULL; |
| 2872 | |
| 2873 | for (tmp = 0; tmp < intf->num_altsetting; tmp++) { |
| 2874 | unsigned ep; |
| 2875 | |
| 2876 | in = NULL; |
| 2877 | out = NULL; |
| 2878 | status = NULL; |
| 2879 | alt = intf->altsetting + tmp; |
| 2880 | |
| 2881 | for (ep = 0; ep < alt->desc.bNumEndpoints; ep++) { |
| 2882 | struct usb_host_endpoint *e; |
| 2883 | int intr = 0; |
| 2884 | |
| 2885 | e = alt->endpoint + ep; |
| 2886 | switch (e->desc.bmAttributes) { |
| 2887 | case USB_ENDPOINT_XFER_INT: |
| 2888 | if (!usb_endpoint_dir_in(&e->desc)) |
| 2889 | continue; |
| 2890 | intr = 1; |
| 2891 | /* FALLTHROUGH */ |
| 2892 | case USB_ENDPOINT_XFER_BULK: |
| 2893 | break; |
| 2894 | default: |
| 2895 | continue; |
| 2896 | } |
| 2897 | if (usb_endpoint_dir_in(&e->desc)) { |
| 2898 | if (!intr && !in) |
| 2899 | in = e; |
| 2900 | else if (intr && !status) |
| 2901 | status = e; |
| 2902 | } else { |
| 2903 | if (!out) |
| 2904 | out = e; |
| 2905 | } |
| 2906 | } |
| 2907 | if (in && out) |
| 2908 | break; |
| 2909 | } |
| 2910 | if (!alt || !in || !out) |
| 2911 | return -EINVAL; |
| 2912 | |
| 2913 | dev->pipe_in = usb_rcvbulkpipe(dev->udev, |
| 2914 | in->desc.bEndpointAddress & |
| 2915 | USB_ENDPOINT_NUMBER_MASK); |
| 2916 | dev->pipe_out = usb_sndbulkpipe(dev->udev, |
| 2917 | out->desc.bEndpointAddress & |
| 2918 | USB_ENDPOINT_NUMBER_MASK); |
| 2919 | dev->ep_intr = status; |
| 2920 | |
| 2921 | return 0; |
| 2922 | } |
| 2923 | |
| 2924 | static int lan78xx_bind(struct lan78xx_net *dev, struct usb_interface *intf) |
| 2925 | { |
| 2926 | struct lan78xx_priv *pdata = NULL; |
| 2927 | int ret; |
| 2928 | int i; |
| 2929 | |
| 2930 | ret = lan78xx_get_endpoints(dev, intf); |
Stefan Wahren | fa8cd98 | 2018-09-04 19:29:09 +0200 | [diff] [blame] | 2931 | if (ret) { |
| 2932 | netdev_warn(dev->net, "lan78xx_get_endpoints failed: %d\n", |
| 2933 | ret); |
| 2934 | return ret; |
| 2935 | } |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 2936 | |
| 2937 | dev->data[0] = (unsigned long)kzalloc(sizeof(*pdata), GFP_KERNEL); |
| 2938 | |
| 2939 | pdata = (struct lan78xx_priv *)(dev->data[0]); |
| 2940 | if (!pdata) { |
| 2941 | netdev_warn(dev->net, "Unable to allocate lan78xx_priv"); |
| 2942 | return -ENOMEM; |
| 2943 | } |
| 2944 | |
| 2945 | pdata->dev = dev; |
| 2946 | |
| 2947 | spin_lock_init(&pdata->rfe_ctl_lock); |
| 2948 | mutex_init(&pdata->dataport_mutex); |
| 2949 | |
| 2950 | INIT_WORK(&pdata->set_multicast, lan78xx_deferred_multicast_write); |
| 2951 | |
| 2952 | for (i = 0; i < DP_SEL_VHF_VLAN_LEN; i++) |
| 2953 | pdata->vlan_table[i] = 0; |
| 2954 | |
| 2955 | INIT_WORK(&pdata->set_vlan, lan78xx_deferred_vlan_write); |
| 2956 | |
| 2957 | dev->net->features = 0; |
| 2958 | |
| 2959 | if (DEFAULT_TX_CSUM_ENABLE) |
| 2960 | dev->net->features |= NETIF_F_HW_CSUM; |
| 2961 | |
| 2962 | if (DEFAULT_RX_CSUM_ENABLE) |
| 2963 | dev->net->features |= NETIF_F_RXCSUM; |
| 2964 | |
| 2965 | if (DEFAULT_TSO_CSUM_ENABLE) |
| 2966 | dev->net->features |= NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_SG; |
| 2967 | |
Dave Stevenson | ec21ecf | 2018-06-25 15:07:14 +0100 | [diff] [blame] | 2968 | if (DEFAULT_VLAN_RX_OFFLOAD) |
| 2969 | dev->net->features |= NETIF_F_HW_VLAN_CTAG_RX; |
| 2970 | |
Dave Stevenson | 4a27327 | 2018-06-25 15:07:13 +0100 | [diff] [blame] | 2971 | if (DEFAULT_VLAN_FILTER_ENABLE) |
| 2972 | dev->net->features |= NETIF_F_HW_VLAN_CTAG_FILTER; |
| 2973 | |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 2974 | dev->net->hw_features = dev->net->features; |
| 2975 | |
Woojung Huh | cc89c32 | 2016-11-01 20:02:00 +0000 | [diff] [blame] | 2976 | ret = lan78xx_setup_irq_domain(dev); |
| 2977 | if (ret < 0) { |
| 2978 | netdev_warn(dev->net, |
| 2979 | "lan78xx_setup_irq_domain() failed : %d", ret); |
Raghuram Chary J | 2d2d99e | 2018-03-27 14:51:16 +0530 | [diff] [blame] | 2980 | goto out1; |
Woojung Huh | cc89c32 | 2016-11-01 20:02:00 +0000 | [diff] [blame] | 2981 | } |
| 2982 | |
Nisar Sayed | 0573f94 | 2017-08-01 10:24:33 +0000 | [diff] [blame] | 2983 | dev->net->hard_header_len += TX_OVERHEAD; |
| 2984 | dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len; |
| 2985 | |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 2986 | /* Init all registers */ |
| 2987 | ret = lan78xx_reset(dev); |
Raghuram Chary J | 2d2d99e | 2018-03-27 14:51:16 +0530 | [diff] [blame] | 2988 | if (ret) { |
| 2989 | netdev_warn(dev->net, "Registers INIT FAILED...."); |
| 2990 | goto out2; |
| 2991 | } |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 2992 | |
Nisar Sayed | fb52c3b | 2017-08-01 10:24:17 +0000 | [diff] [blame] | 2993 | ret = lan78xx_mdio_init(dev); |
Raghuram Chary J | 2d2d99e | 2018-03-27 14:51:16 +0530 | [diff] [blame] | 2994 | if (ret) { |
| 2995 | netdev_warn(dev->net, "MDIO INIT FAILED....."); |
| 2996 | goto out2; |
| 2997 | } |
Woojung.Huh@microchip.com | ce85e13 | 2015-09-16 23:40:54 +0000 | [diff] [blame] | 2998 | |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 2999 | dev->net->flags |= IFF_MULTICAST; |
| 3000 | |
| 3001 | pdata->wol = WAKE_MAGIC; |
| 3002 | |
Nisar Sayed | fb52c3b | 2017-08-01 10:24:17 +0000 | [diff] [blame] | 3003 | return ret; |
Raghuram Chary J | 2d2d99e | 2018-03-27 14:51:16 +0530 | [diff] [blame] | 3004 | |
| 3005 | out2: |
| 3006 | lan78xx_remove_irq_domain(dev); |
| 3007 | |
| 3008 | out1: |
| 3009 | netdev_warn(dev->net, "Bind routine FAILED"); |
| 3010 | cancel_work_sync(&pdata->set_multicast); |
| 3011 | cancel_work_sync(&pdata->set_vlan); |
| 3012 | kfree(pdata); |
| 3013 | return ret; |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 3014 | } |
| 3015 | |
| 3016 | static void lan78xx_unbind(struct lan78xx_net *dev, struct usb_interface *intf) |
| 3017 | { |
| 3018 | struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]); |
| 3019 | |
Woojung Huh | cc89c32 | 2016-11-01 20:02:00 +0000 | [diff] [blame] | 3020 | lan78xx_remove_irq_domain(dev); |
| 3021 | |
Woojung.Huh@microchip.com | ce85e13 | 2015-09-16 23:40:54 +0000 | [diff] [blame] | 3022 | lan78xx_remove_mdio(dev); |
| 3023 | |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 3024 | if (pdata) { |
Raghuram Chary J | 2d2d99e | 2018-03-27 14:51:16 +0530 | [diff] [blame] | 3025 | cancel_work_sync(&pdata->set_multicast); |
| 3026 | cancel_work_sync(&pdata->set_vlan); |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 3027 | netif_dbg(dev, ifdown, dev->net, "free pdata"); |
| 3028 | kfree(pdata); |
| 3029 | pdata = NULL; |
| 3030 | dev->data[0] = 0; |
| 3031 | } |
| 3032 | } |
| 3033 | |
| 3034 | static void lan78xx_rx_csum_offload(struct lan78xx_net *dev, |
| 3035 | struct sk_buff *skb, |
| 3036 | u32 rx_cmd_a, u32 rx_cmd_b) |
| 3037 | { |
Dave Stevenson | 9343ac8 | 2018-06-25 15:07:15 +0100 | [diff] [blame] | 3038 | /* HW Checksum offload appears to be flawed if used when not stripping |
| 3039 | * VLAN headers. Drop back to S/W checksums under these conditions. |
| 3040 | */ |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 3041 | if (!(dev->net->features & NETIF_F_RXCSUM) || |
Dave Stevenson | 9343ac8 | 2018-06-25 15:07:15 +0100 | [diff] [blame] | 3042 | unlikely(rx_cmd_a & RX_CMD_A_ICSM_) || |
| 3043 | ((rx_cmd_a & RX_CMD_A_FVTG_) && |
| 3044 | !(dev->net->features & NETIF_F_HW_VLAN_CTAG_RX))) { |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 3045 | skb->ip_summed = CHECKSUM_NONE; |
| 3046 | } else { |
| 3047 | skb->csum = ntohs((u16)(rx_cmd_b >> RX_CMD_B_CSUM_SHIFT_)); |
| 3048 | skb->ip_summed = CHECKSUM_COMPLETE; |
| 3049 | } |
| 3050 | } |
| 3051 | |
Dave Stevenson | ec21ecf | 2018-06-25 15:07:14 +0100 | [diff] [blame] | 3052 | static void lan78xx_rx_vlan_offload(struct lan78xx_net *dev, |
| 3053 | struct sk_buff *skb, |
| 3054 | u32 rx_cmd_a, u32 rx_cmd_b) |
| 3055 | { |
| 3056 | if ((dev->net->features & NETIF_F_HW_VLAN_CTAG_RX) && |
| 3057 | (rx_cmd_a & RX_CMD_A_FVTG_)) |
| 3058 | __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), |
| 3059 | (rx_cmd_b & 0xffff)); |
| 3060 | } |
| 3061 | |
Baoyou Xie | e0c79ff | 2016-09-06 16:19:02 +0800 | [diff] [blame] | 3062 | static void lan78xx_skb_return(struct lan78xx_net *dev, struct sk_buff *skb) |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 3063 | { |
Stefan Wahren | 51ceac9 | 2018-09-04 19:29:12 +0200 | [diff] [blame] | 3064 | int status; |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 3065 | |
| 3066 | if (test_bit(EVENT_RX_PAUSED, &dev->flags)) { |
| 3067 | skb_queue_tail(&dev->rxq_pause, skb); |
| 3068 | return; |
| 3069 | } |
| 3070 | |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 3071 | dev->net->stats.rx_packets++; |
| 3072 | dev->net->stats.rx_bytes += skb->len; |
| 3073 | |
Woojung Huh | 74d79a2 | 2016-04-25 22:22:32 +0000 | [diff] [blame] | 3074 | skb->protocol = eth_type_trans(skb, dev->net); |
| 3075 | |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 3076 | netif_dbg(dev, rx_status, dev->net, "< rx, len %zu, type 0x%x\n", |
| 3077 | skb->len + sizeof(struct ethhdr), skb->protocol); |
| 3078 | memset(skb->cb, 0, sizeof(struct skb_data)); |
| 3079 | |
| 3080 | if (skb_defer_rx_timestamp(skb)) |
| 3081 | return; |
| 3082 | |
| 3083 | status = netif_rx(skb); |
| 3084 | if (status != NET_RX_SUCCESS) |
| 3085 | netif_dbg(dev, rx_err, dev->net, |
| 3086 | "netif_rx status %d\n", status); |
| 3087 | } |
| 3088 | |
| 3089 | static int lan78xx_rx(struct lan78xx_net *dev, struct sk_buff *skb) |
| 3090 | { |
| 3091 | if (skb->len < dev->net->hard_header_len) |
| 3092 | return 0; |
| 3093 | |
| 3094 | while (skb->len > 0) { |
| 3095 | u32 rx_cmd_a, rx_cmd_b, align_count, size; |
| 3096 | u16 rx_cmd_c; |
| 3097 | struct sk_buff *skb2; |
| 3098 | unsigned char *packet; |
| 3099 | |
| 3100 | memcpy(&rx_cmd_a, skb->data, sizeof(rx_cmd_a)); |
| 3101 | le32_to_cpus(&rx_cmd_a); |
| 3102 | skb_pull(skb, sizeof(rx_cmd_a)); |
| 3103 | |
| 3104 | memcpy(&rx_cmd_b, skb->data, sizeof(rx_cmd_b)); |
| 3105 | le32_to_cpus(&rx_cmd_b); |
| 3106 | skb_pull(skb, sizeof(rx_cmd_b)); |
| 3107 | |
| 3108 | memcpy(&rx_cmd_c, skb->data, sizeof(rx_cmd_c)); |
| 3109 | le16_to_cpus(&rx_cmd_c); |
| 3110 | skb_pull(skb, sizeof(rx_cmd_c)); |
| 3111 | |
| 3112 | packet = skb->data; |
| 3113 | |
| 3114 | /* get the packet length */ |
| 3115 | size = (rx_cmd_a & RX_CMD_A_LEN_MASK_); |
| 3116 | align_count = (4 - ((size + RXW_PADDING) % 4)) % 4; |
| 3117 | |
| 3118 | if (unlikely(rx_cmd_a & RX_CMD_A_RED_)) { |
| 3119 | netif_dbg(dev, rx_err, dev->net, |
| 3120 | "Error rx_cmd_a=0x%08x", rx_cmd_a); |
| 3121 | } else { |
| 3122 | /* last frame in this batch */ |
| 3123 | if (skb->len == size) { |
| 3124 | lan78xx_rx_csum_offload(dev, skb, |
| 3125 | rx_cmd_a, rx_cmd_b); |
Dave Stevenson | ec21ecf | 2018-06-25 15:07:14 +0100 | [diff] [blame] | 3126 | lan78xx_rx_vlan_offload(dev, skb, |
| 3127 | rx_cmd_a, rx_cmd_b); |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 3128 | |
| 3129 | skb_trim(skb, skb->len - 4); /* remove fcs */ |
| 3130 | skb->truesize = size + sizeof(struct sk_buff); |
| 3131 | |
| 3132 | return 1; |
| 3133 | } |
| 3134 | |
| 3135 | skb2 = skb_clone(skb, GFP_ATOMIC); |
| 3136 | if (unlikely(!skb2)) { |
| 3137 | netdev_warn(dev->net, "Error allocating skb"); |
| 3138 | return 0; |
| 3139 | } |
| 3140 | |
| 3141 | skb2->len = size; |
| 3142 | skb2->data = packet; |
| 3143 | skb_set_tail_pointer(skb2, size); |
| 3144 | |
| 3145 | lan78xx_rx_csum_offload(dev, skb2, rx_cmd_a, rx_cmd_b); |
Dave Stevenson | ec21ecf | 2018-06-25 15:07:14 +0100 | [diff] [blame] | 3146 | lan78xx_rx_vlan_offload(dev, skb2, rx_cmd_a, rx_cmd_b); |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 3147 | |
| 3148 | skb_trim(skb2, skb2->len - 4); /* remove fcs */ |
| 3149 | skb2->truesize = size + sizeof(struct sk_buff); |
| 3150 | |
| 3151 | lan78xx_skb_return(dev, skb2); |
| 3152 | } |
| 3153 | |
| 3154 | skb_pull(skb, size); |
| 3155 | |
| 3156 | /* padding bytes before the next frame starts */ |
| 3157 | if (skb->len) |
| 3158 | skb_pull(skb, align_count); |
| 3159 | } |
| 3160 | |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 3161 | return 1; |
| 3162 | } |
| 3163 | |
| 3164 | static inline void rx_process(struct lan78xx_net *dev, struct sk_buff *skb) |
| 3165 | { |
| 3166 | if (!lan78xx_rx(dev, skb)) { |
| 3167 | dev->net->stats.rx_errors++; |
| 3168 | goto done; |
| 3169 | } |
| 3170 | |
| 3171 | if (skb->len) { |
| 3172 | lan78xx_skb_return(dev, skb); |
| 3173 | return; |
| 3174 | } |
| 3175 | |
| 3176 | netif_dbg(dev, rx_err, dev->net, "drop\n"); |
| 3177 | dev->net->stats.rx_errors++; |
| 3178 | done: |
| 3179 | skb_queue_tail(&dev->done, skb); |
| 3180 | } |
| 3181 | |
| 3182 | static void rx_complete(struct urb *urb); |
| 3183 | |
| 3184 | static int rx_submit(struct lan78xx_net *dev, struct urb *urb, gfp_t flags) |
| 3185 | { |
| 3186 | struct sk_buff *skb; |
| 3187 | struct skb_data *entry; |
| 3188 | unsigned long lockflags; |
| 3189 | size_t size = dev->rx_urb_size; |
| 3190 | int ret = 0; |
| 3191 | |
| 3192 | skb = netdev_alloc_skb_ip_align(dev->net, size); |
| 3193 | if (!skb) { |
| 3194 | usb_free_urb(urb); |
| 3195 | return -ENOMEM; |
| 3196 | } |
| 3197 | |
| 3198 | entry = (struct skb_data *)skb->cb; |
| 3199 | entry->urb = urb; |
| 3200 | entry->dev = dev; |
| 3201 | entry->length = 0; |
| 3202 | |
| 3203 | usb_fill_bulk_urb(urb, dev->udev, dev->pipe_in, |
| 3204 | skb->data, size, rx_complete, skb); |
| 3205 | |
| 3206 | spin_lock_irqsave(&dev->rxq.lock, lockflags); |
| 3207 | |
| 3208 | if (netif_device_present(dev->net) && |
| 3209 | netif_running(dev->net) && |
| 3210 | !test_bit(EVENT_RX_HALT, &dev->flags) && |
| 3211 | !test_bit(EVENT_DEV_ASLEEP, &dev->flags)) { |
| 3212 | ret = usb_submit_urb(urb, GFP_ATOMIC); |
| 3213 | switch (ret) { |
| 3214 | case 0: |
| 3215 | lan78xx_queue_skb(&dev->rxq, skb, rx_start); |
| 3216 | break; |
| 3217 | case -EPIPE: |
| 3218 | lan78xx_defer_kevent(dev, EVENT_RX_HALT); |
| 3219 | break; |
| 3220 | case -ENODEV: |
| 3221 | netif_dbg(dev, ifdown, dev->net, "device gone\n"); |
| 3222 | netif_device_detach(dev->net); |
| 3223 | break; |
| 3224 | case -EHOSTUNREACH: |
| 3225 | ret = -ENOLINK; |
| 3226 | break; |
| 3227 | default: |
| 3228 | netif_dbg(dev, rx_err, dev->net, |
| 3229 | "rx submit, %d\n", ret); |
| 3230 | tasklet_schedule(&dev->bh); |
| 3231 | } |
| 3232 | } else { |
| 3233 | netif_dbg(dev, ifdown, dev->net, "rx: stopped\n"); |
| 3234 | ret = -ENOLINK; |
| 3235 | } |
| 3236 | spin_unlock_irqrestore(&dev->rxq.lock, lockflags); |
| 3237 | if (ret) { |
| 3238 | dev_kfree_skb_any(skb); |
| 3239 | usb_free_urb(urb); |
| 3240 | } |
| 3241 | return ret; |
| 3242 | } |
| 3243 | |
| 3244 | static void rx_complete(struct urb *urb) |
| 3245 | { |
| 3246 | struct sk_buff *skb = (struct sk_buff *)urb->context; |
| 3247 | struct skb_data *entry = (struct skb_data *)skb->cb; |
| 3248 | struct lan78xx_net *dev = entry->dev; |
| 3249 | int urb_status = urb->status; |
| 3250 | enum skb_state state; |
| 3251 | |
| 3252 | skb_put(skb, urb->actual_length); |
| 3253 | state = rx_done; |
| 3254 | entry->urb = NULL; |
| 3255 | |
| 3256 | switch (urb_status) { |
| 3257 | case 0: |
| 3258 | if (skb->len < dev->net->hard_header_len) { |
| 3259 | state = rx_cleanup; |
| 3260 | dev->net->stats.rx_errors++; |
| 3261 | dev->net->stats.rx_length_errors++; |
| 3262 | netif_dbg(dev, rx_err, dev->net, |
| 3263 | "rx length %d\n", skb->len); |
| 3264 | } |
| 3265 | usb_mark_last_busy(dev->udev); |
| 3266 | break; |
| 3267 | case -EPIPE: |
| 3268 | dev->net->stats.rx_errors++; |
| 3269 | lan78xx_defer_kevent(dev, EVENT_RX_HALT); |
| 3270 | /* FALLTHROUGH */ |
| 3271 | case -ECONNRESET: /* async unlink */ |
| 3272 | case -ESHUTDOWN: /* hardware gone */ |
| 3273 | netif_dbg(dev, ifdown, dev->net, |
| 3274 | "rx shutdown, code %d\n", urb_status); |
| 3275 | state = rx_cleanup; |
| 3276 | entry->urb = urb; |
| 3277 | urb = NULL; |
| 3278 | break; |
| 3279 | case -EPROTO: |
| 3280 | case -ETIME: |
| 3281 | case -EILSEQ: |
| 3282 | dev->net->stats.rx_errors++; |
| 3283 | state = rx_cleanup; |
| 3284 | entry->urb = urb; |
| 3285 | urb = NULL; |
| 3286 | break; |
| 3287 | |
| 3288 | /* data overrun ... flush fifo? */ |
| 3289 | case -EOVERFLOW: |
| 3290 | dev->net->stats.rx_over_errors++; |
| 3291 | /* FALLTHROUGH */ |
| 3292 | |
| 3293 | default: |
| 3294 | state = rx_cleanup; |
| 3295 | dev->net->stats.rx_errors++; |
| 3296 | netif_dbg(dev, rx_err, dev->net, "rx status %d\n", urb_status); |
| 3297 | break; |
| 3298 | } |
| 3299 | |
| 3300 | state = defer_bh(dev, skb, &dev->rxq, state); |
| 3301 | |
| 3302 | if (urb) { |
| 3303 | if (netif_running(dev->net) && |
| 3304 | !test_bit(EVENT_RX_HALT, &dev->flags) && |
| 3305 | state != unlink_start) { |
| 3306 | rx_submit(dev, urb, GFP_ATOMIC); |
| 3307 | return; |
| 3308 | } |
| 3309 | usb_free_urb(urb); |
| 3310 | } |
| 3311 | netif_dbg(dev, rx_err, dev->net, "no read resubmitted\n"); |
| 3312 | } |
| 3313 | |
| 3314 | static void lan78xx_tx_bh(struct lan78xx_net *dev) |
| 3315 | { |
| 3316 | int length; |
| 3317 | struct urb *urb = NULL; |
| 3318 | struct skb_data *entry; |
| 3319 | unsigned long flags; |
| 3320 | struct sk_buff_head *tqp = &dev->txq_pend; |
| 3321 | struct sk_buff *skb, *skb2; |
| 3322 | int ret; |
| 3323 | int count, pos; |
| 3324 | int skb_totallen, pkt_cnt; |
| 3325 | |
| 3326 | skb_totallen = 0; |
| 3327 | pkt_cnt = 0; |
Woojung Huh | 74d79a2 | 2016-04-25 22:22:32 +0000 | [diff] [blame] | 3328 | count = 0; |
| 3329 | length = 0; |
Stefan Wahren | dea39ac | 2018-07-15 21:53:20 +0200 | [diff] [blame] | 3330 | spin_lock_irqsave(&tqp->lock, flags); |
David S. Miller | e42a43a | 2018-08-06 23:12:17 -0700 | [diff] [blame] | 3331 | skb_queue_walk(tqp, skb) { |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 3332 | if (skb_is_gso(skb)) { |
David S. Miller | e42a43a | 2018-08-06 23:12:17 -0700 | [diff] [blame] | 3333 | if (!skb_queue_is_first(tqp, skb)) { |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 3334 | /* handle previous packets first */ |
| 3335 | break; |
| 3336 | } |
Woojung Huh | 74d79a2 | 2016-04-25 22:22:32 +0000 | [diff] [blame] | 3337 | count = 1; |
| 3338 | length = skb->len - TX_OVERHEAD; |
Stefan Wahren | dea39ac | 2018-07-15 21:53:20 +0200 | [diff] [blame] | 3339 | __skb_unlink(skb, tqp); |
| 3340 | spin_unlock_irqrestore(&tqp->lock, flags); |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 3341 | goto gso_skb; |
| 3342 | } |
| 3343 | |
| 3344 | if ((skb_totallen + skb->len) > MAX_SINGLE_PACKET_SIZE) |
| 3345 | break; |
| 3346 | skb_totallen = skb->len + roundup(skb_totallen, sizeof(u32)); |
| 3347 | pkt_cnt++; |
| 3348 | } |
Stefan Wahren | dea39ac | 2018-07-15 21:53:20 +0200 | [diff] [blame] | 3349 | spin_unlock_irqrestore(&tqp->lock, flags); |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 3350 | |
| 3351 | /* copy to a single skb */ |
| 3352 | skb = alloc_skb(skb_totallen, GFP_ATOMIC); |
| 3353 | if (!skb) |
| 3354 | goto drop; |
| 3355 | |
| 3356 | skb_put(skb, skb_totallen); |
| 3357 | |
| 3358 | for (count = pos = 0; count < pkt_cnt; count++) { |
| 3359 | skb2 = skb_dequeue(tqp); |
| 3360 | if (skb2) { |
Woojung Huh | 74d79a2 | 2016-04-25 22:22:32 +0000 | [diff] [blame] | 3361 | length += (skb2->len - TX_OVERHEAD); |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 3362 | memcpy(skb->data + pos, skb2->data, skb2->len); |
| 3363 | pos += roundup(skb2->len, sizeof(u32)); |
| 3364 | dev_kfree_skb(skb2); |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 3365 | } |
| 3366 | } |
| 3367 | |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 3368 | gso_skb: |
| 3369 | urb = usb_alloc_urb(0, GFP_ATOMIC); |
Wolfram Sang | d7c4e84 | 2016-08-11 23:05:27 +0200 | [diff] [blame] | 3370 | if (!urb) |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 3371 | goto drop; |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 3372 | |
| 3373 | entry = (struct skb_data *)skb->cb; |
| 3374 | entry->urb = urb; |
| 3375 | entry->dev = dev; |
| 3376 | entry->length = length; |
Woojung Huh | 74d79a2 | 2016-04-25 22:22:32 +0000 | [diff] [blame] | 3377 | entry->num_of_packet = count; |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 3378 | |
| 3379 | spin_lock_irqsave(&dev->txq.lock, flags); |
| 3380 | ret = usb_autopm_get_interface_async(dev->intf); |
| 3381 | if (ret < 0) { |
| 3382 | spin_unlock_irqrestore(&dev->txq.lock, flags); |
| 3383 | goto drop; |
| 3384 | } |
| 3385 | |
| 3386 | usb_fill_bulk_urb(urb, dev->udev, dev->pipe_out, |
| 3387 | skb->data, skb->len, tx_complete, skb); |
| 3388 | |
| 3389 | if (length % dev->maxpacket == 0) { |
| 3390 | /* send USB_ZERO_PACKET */ |
| 3391 | urb->transfer_flags |= URB_ZERO_PACKET; |
| 3392 | } |
| 3393 | |
| 3394 | #ifdef CONFIG_PM |
| 3395 | /* if this triggers the device is still a sleep */ |
| 3396 | if (test_bit(EVENT_DEV_ASLEEP, &dev->flags)) { |
| 3397 | /* transmission will be done in resume */ |
| 3398 | usb_anchor_urb(urb, &dev->deferred); |
| 3399 | /* no use to process more packets */ |
| 3400 | netif_stop_queue(dev->net); |
| 3401 | usb_put_urb(urb); |
| 3402 | spin_unlock_irqrestore(&dev->txq.lock, flags); |
| 3403 | netdev_dbg(dev->net, "Delaying transmission for resumption\n"); |
| 3404 | return; |
| 3405 | } |
| 3406 | #endif |
| 3407 | |
| 3408 | ret = usb_submit_urb(urb, GFP_ATOMIC); |
| 3409 | switch (ret) { |
| 3410 | case 0: |
Florian Westphal | 860e953 | 2016-05-03 16:33:13 +0200 | [diff] [blame] | 3411 | netif_trans_update(dev->net); |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 3412 | lan78xx_queue_skb(&dev->txq, skb, tx_start); |
| 3413 | if (skb_queue_len(&dev->txq) >= dev->tx_qlen) |
| 3414 | netif_stop_queue(dev->net); |
| 3415 | break; |
| 3416 | case -EPIPE: |
| 3417 | netif_stop_queue(dev->net); |
| 3418 | lan78xx_defer_kevent(dev, EVENT_TX_HALT); |
| 3419 | usb_autopm_put_interface_async(dev->intf); |
| 3420 | break; |
| 3421 | default: |
| 3422 | usb_autopm_put_interface_async(dev->intf); |
| 3423 | netif_dbg(dev, tx_err, dev->net, |
| 3424 | "tx: submit urb err %d\n", ret); |
| 3425 | break; |
| 3426 | } |
| 3427 | |
| 3428 | spin_unlock_irqrestore(&dev->txq.lock, flags); |
| 3429 | |
| 3430 | if (ret) { |
| 3431 | netif_dbg(dev, tx_err, dev->net, "drop, code %d\n", ret); |
| 3432 | drop: |
| 3433 | dev->net->stats.tx_dropped++; |
| 3434 | if (skb) |
| 3435 | dev_kfree_skb_any(skb); |
| 3436 | usb_free_urb(urb); |
| 3437 | } else |
| 3438 | netif_dbg(dev, tx_queued, dev->net, |
| 3439 | "> tx, len %d, type 0x%x\n", length, skb->protocol); |
| 3440 | } |
| 3441 | |
| 3442 | static void lan78xx_rx_bh(struct lan78xx_net *dev) |
| 3443 | { |
| 3444 | struct urb *urb; |
| 3445 | int i; |
| 3446 | |
| 3447 | if (skb_queue_len(&dev->rxq) < dev->rx_qlen) { |
| 3448 | for (i = 0; i < 10; i++) { |
| 3449 | if (skb_queue_len(&dev->rxq) >= dev->rx_qlen) |
| 3450 | break; |
| 3451 | urb = usb_alloc_urb(0, GFP_ATOMIC); |
| 3452 | if (urb) |
| 3453 | if (rx_submit(dev, urb, GFP_ATOMIC) == -ENOLINK) |
| 3454 | return; |
| 3455 | } |
| 3456 | |
| 3457 | if (skb_queue_len(&dev->rxq) < dev->rx_qlen) |
| 3458 | tasklet_schedule(&dev->bh); |
| 3459 | } |
| 3460 | if (skb_queue_len(&dev->txq) < dev->tx_qlen) |
| 3461 | netif_wake_queue(dev->net); |
| 3462 | } |
| 3463 | |
| 3464 | static void lan78xx_bh(unsigned long param) |
| 3465 | { |
| 3466 | struct lan78xx_net *dev = (struct lan78xx_net *)param; |
| 3467 | struct sk_buff *skb; |
| 3468 | struct skb_data *entry; |
| 3469 | |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 3470 | while ((skb = skb_dequeue(&dev->done))) { |
| 3471 | entry = (struct skb_data *)(skb->cb); |
| 3472 | switch (entry->state) { |
| 3473 | case rx_done: |
| 3474 | entry->state = rx_cleanup; |
| 3475 | rx_process(dev, skb); |
| 3476 | continue; |
| 3477 | case tx_done: |
| 3478 | usb_free_urb(entry->urb); |
| 3479 | dev_kfree_skb(skb); |
| 3480 | continue; |
| 3481 | case rx_cleanup: |
| 3482 | usb_free_urb(entry->urb); |
| 3483 | dev_kfree_skb(skb); |
| 3484 | continue; |
| 3485 | default: |
| 3486 | netdev_dbg(dev->net, "skb state %d\n", entry->state); |
| 3487 | return; |
| 3488 | } |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 3489 | } |
| 3490 | |
| 3491 | if (netif_device_present(dev->net) && netif_running(dev->net)) { |
Woojung Huh | 20ff556 | 2016-03-16 22:10:40 +0000 | [diff] [blame] | 3492 | /* reset update timer delta */ |
| 3493 | if (timer_pending(&dev->stat_monitor) && (dev->delta != 1)) { |
| 3494 | dev->delta = 1; |
| 3495 | mod_timer(&dev->stat_monitor, |
| 3496 | jiffies + STAT_UPDATE_TIMER); |
| 3497 | } |
| 3498 | |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 3499 | if (!skb_queue_empty(&dev->txq_pend)) |
| 3500 | lan78xx_tx_bh(dev); |
| 3501 | |
| 3502 | if (!timer_pending(&dev->delay) && |
| 3503 | !test_bit(EVENT_RX_HALT, &dev->flags)) |
| 3504 | lan78xx_rx_bh(dev); |
| 3505 | } |
| 3506 | } |
| 3507 | |
| 3508 | static void lan78xx_delayedwork(struct work_struct *work) |
| 3509 | { |
| 3510 | int status; |
| 3511 | struct lan78xx_net *dev; |
| 3512 | |
| 3513 | dev = container_of(work, struct lan78xx_net, wq.work); |
| 3514 | |
| 3515 | if (test_bit(EVENT_TX_HALT, &dev->flags)) { |
| 3516 | unlink_urbs(dev, &dev->txq); |
| 3517 | status = usb_autopm_get_interface(dev->intf); |
| 3518 | if (status < 0) |
| 3519 | goto fail_pipe; |
| 3520 | status = usb_clear_halt(dev->udev, dev->pipe_out); |
| 3521 | usb_autopm_put_interface(dev->intf); |
| 3522 | if (status < 0 && |
| 3523 | status != -EPIPE && |
| 3524 | status != -ESHUTDOWN) { |
| 3525 | if (netif_msg_tx_err(dev)) |
| 3526 | fail_pipe: |
| 3527 | netdev_err(dev->net, |
| 3528 | "can't clear tx halt, status %d\n", |
| 3529 | status); |
| 3530 | } else { |
| 3531 | clear_bit(EVENT_TX_HALT, &dev->flags); |
| 3532 | if (status != -ESHUTDOWN) |
| 3533 | netif_wake_queue(dev->net); |
| 3534 | } |
| 3535 | } |
| 3536 | if (test_bit(EVENT_RX_HALT, &dev->flags)) { |
| 3537 | unlink_urbs(dev, &dev->rxq); |
| 3538 | status = usb_autopm_get_interface(dev->intf); |
| 3539 | if (status < 0) |
| 3540 | goto fail_halt; |
| 3541 | status = usb_clear_halt(dev->udev, dev->pipe_in); |
| 3542 | usb_autopm_put_interface(dev->intf); |
| 3543 | if (status < 0 && |
| 3544 | status != -EPIPE && |
| 3545 | status != -ESHUTDOWN) { |
| 3546 | if (netif_msg_rx_err(dev)) |
| 3547 | fail_halt: |
| 3548 | netdev_err(dev->net, |
| 3549 | "can't clear rx halt, status %d\n", |
| 3550 | status); |
| 3551 | } else { |
| 3552 | clear_bit(EVENT_RX_HALT, &dev->flags); |
| 3553 | tasklet_schedule(&dev->bh); |
| 3554 | } |
| 3555 | } |
| 3556 | |
| 3557 | if (test_bit(EVENT_LINK_RESET, &dev->flags)) { |
| 3558 | int ret = 0; |
| 3559 | |
| 3560 | clear_bit(EVENT_LINK_RESET, &dev->flags); |
| 3561 | status = usb_autopm_get_interface(dev->intf); |
| 3562 | if (status < 0) |
| 3563 | goto skip_reset; |
| 3564 | if (lan78xx_link_reset(dev) < 0) { |
| 3565 | usb_autopm_put_interface(dev->intf); |
| 3566 | skip_reset: |
| 3567 | netdev_info(dev->net, "link reset failed (%d)\n", |
| 3568 | ret); |
| 3569 | } else { |
| 3570 | usb_autopm_put_interface(dev->intf); |
| 3571 | } |
| 3572 | } |
Woojung Huh | 20ff556 | 2016-03-16 22:10:40 +0000 | [diff] [blame] | 3573 | |
| 3574 | if (test_bit(EVENT_STAT_UPDATE, &dev->flags)) { |
| 3575 | lan78xx_update_stats(dev); |
| 3576 | |
| 3577 | clear_bit(EVENT_STAT_UPDATE, &dev->flags); |
| 3578 | |
| 3579 | mod_timer(&dev->stat_monitor, |
| 3580 | jiffies + (STAT_UPDATE_TIMER * dev->delta)); |
| 3581 | |
| 3582 | dev->delta = min((dev->delta * 2), 50); |
| 3583 | } |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 3584 | } |
| 3585 | |
| 3586 | static void intr_complete(struct urb *urb) |
| 3587 | { |
| 3588 | struct lan78xx_net *dev = urb->context; |
| 3589 | int status = urb->status; |
| 3590 | |
| 3591 | switch (status) { |
| 3592 | /* success */ |
| 3593 | case 0: |
| 3594 | lan78xx_status(dev, urb); |
| 3595 | break; |
| 3596 | |
| 3597 | /* software-driven interface shutdown */ |
| 3598 | case -ENOENT: /* urb killed */ |
| 3599 | case -ESHUTDOWN: /* hardware gone */ |
| 3600 | netif_dbg(dev, ifdown, dev->net, |
| 3601 | "intr shutdown, code %d\n", status); |
| 3602 | return; |
| 3603 | |
| 3604 | /* NOTE: not throttling like RX/TX, since this endpoint |
| 3605 | * already polls infrequently |
| 3606 | */ |
| 3607 | default: |
| 3608 | netdev_dbg(dev->net, "intr status %d\n", status); |
| 3609 | break; |
| 3610 | } |
| 3611 | |
| 3612 | if (!netif_running(dev->net)) |
| 3613 | return; |
| 3614 | |
| 3615 | memset(urb->transfer_buffer, 0, urb->transfer_buffer_length); |
| 3616 | status = usb_submit_urb(urb, GFP_ATOMIC); |
| 3617 | if (status != 0) |
| 3618 | netif_err(dev, timer, dev->net, |
| 3619 | "intr resubmit --> %d\n", status); |
| 3620 | } |
| 3621 | |
| 3622 | static void lan78xx_disconnect(struct usb_interface *intf) |
| 3623 | { |
Stefan Wahren | 51ceac9 | 2018-09-04 19:29:12 +0200 | [diff] [blame] | 3624 | struct lan78xx_net *dev; |
| 3625 | struct usb_device *udev; |
| 3626 | struct net_device *net; |
| 3627 | struct phy_device *phydev; |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 3628 | |
| 3629 | dev = usb_get_intfdata(intf); |
| 3630 | usb_set_intfdata(intf, NULL); |
| 3631 | if (!dev) |
| 3632 | return; |
| 3633 | |
| 3634 | udev = interface_to_usbdev(intf); |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 3635 | net = dev->net; |
Raghuram Chary J | 89b36fb | 2018-04-28 11:33:14 +0530 | [diff] [blame] | 3636 | phydev = net->phydev; |
Alexander Graf | 92571a1 | 2018-04-04 00:19:35 +0200 | [diff] [blame] | 3637 | |
| 3638 | phy_unregister_fixup_for_uid(PHY_KSZ9031RNX, 0xfffffff0); |
| 3639 | phy_unregister_fixup_for_uid(PHY_LAN8835, 0xfffffff0); |
| 3640 | |
| 3641 | phy_disconnect(net->phydev); |
| 3642 | |
Raghuram Chary J | 89b36fb | 2018-04-28 11:33:14 +0530 | [diff] [blame] | 3643 | if (phy_is_pseudo_fixed_link(phydev)) |
| 3644 | fixed_phy_unregister(phydev); |
| 3645 | |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 3646 | unregister_netdev(net); |
| 3647 | |
| 3648 | cancel_delayed_work_sync(&dev->wq); |
| 3649 | |
| 3650 | usb_scuttle_anchored_urbs(&dev->deferred); |
| 3651 | |
| 3652 | lan78xx_unbind(dev, intf); |
| 3653 | |
| 3654 | usb_kill_urb(dev->urb_intr); |
| 3655 | usb_free_urb(dev->urb_intr); |
| 3656 | |
| 3657 | free_netdev(net); |
| 3658 | usb_put_dev(udev); |
| 3659 | } |
| 3660 | |
Baoyou Xie | e0c79ff | 2016-09-06 16:19:02 +0800 | [diff] [blame] | 3661 | static void lan78xx_tx_timeout(struct net_device *net) |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 3662 | { |
| 3663 | struct lan78xx_net *dev = netdev_priv(net); |
| 3664 | |
| 3665 | unlink_urbs(dev, &dev->txq); |
| 3666 | tasklet_schedule(&dev->bh); |
| 3667 | } |
| 3668 | |
| 3669 | static const struct net_device_ops lan78xx_netdev_ops = { |
| 3670 | .ndo_open = lan78xx_open, |
| 3671 | .ndo_stop = lan78xx_stop, |
| 3672 | .ndo_start_xmit = lan78xx_start_xmit, |
| 3673 | .ndo_tx_timeout = lan78xx_tx_timeout, |
| 3674 | .ndo_change_mtu = lan78xx_change_mtu, |
| 3675 | .ndo_set_mac_address = lan78xx_set_mac_addr, |
| 3676 | .ndo_validate_addr = eth_validate_addr, |
| 3677 | .ndo_do_ioctl = lan78xx_ioctl, |
| 3678 | .ndo_set_rx_mode = lan78xx_set_multicast, |
| 3679 | .ndo_set_features = lan78xx_set_features, |
| 3680 | .ndo_vlan_rx_add_vid = lan78xx_vlan_rx_add_vid, |
| 3681 | .ndo_vlan_rx_kill_vid = lan78xx_vlan_rx_kill_vid, |
| 3682 | }; |
| 3683 | |
Kees Cook | d28bb96 | 2017-10-16 17:29:32 -0700 | [diff] [blame] | 3684 | static void lan78xx_stat_monitor(struct timer_list *t) |
Woojung Huh | 20ff556 | 2016-03-16 22:10:40 +0000 | [diff] [blame] | 3685 | { |
Kees Cook | d28bb96 | 2017-10-16 17:29:32 -0700 | [diff] [blame] | 3686 | struct lan78xx_net *dev = from_timer(dev, t, stat_monitor); |
Woojung Huh | 20ff556 | 2016-03-16 22:10:40 +0000 | [diff] [blame] | 3687 | |
| 3688 | lan78xx_defer_kevent(dev, EVENT_STAT_UPDATE); |
| 3689 | } |
| 3690 | |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 3691 | static int lan78xx_probe(struct usb_interface *intf, |
| 3692 | const struct usb_device_id *id) |
| 3693 | { |
| 3694 | struct lan78xx_net *dev; |
| 3695 | struct net_device *netdev; |
| 3696 | struct usb_device *udev; |
| 3697 | int ret; |
| 3698 | unsigned maxp; |
| 3699 | unsigned period; |
| 3700 | u8 *buf = NULL; |
| 3701 | |
| 3702 | udev = interface_to_usbdev(intf); |
| 3703 | udev = usb_get_dev(udev); |
| 3704 | |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 3705 | netdev = alloc_etherdev(sizeof(struct lan78xx_net)); |
| 3706 | if (!netdev) { |
Nisar Sayed | fb52c3b | 2017-08-01 10:24:17 +0000 | [diff] [blame] | 3707 | dev_err(&intf->dev, "Error: OOM\n"); |
| 3708 | ret = -ENOMEM; |
| 3709 | goto out1; |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 3710 | } |
| 3711 | |
| 3712 | /* netdev_printk() needs this */ |
| 3713 | SET_NETDEV_DEV(netdev, &intf->dev); |
| 3714 | |
| 3715 | dev = netdev_priv(netdev); |
| 3716 | dev->udev = udev; |
| 3717 | dev->intf = intf; |
| 3718 | dev->net = netdev; |
| 3719 | dev->msg_enable = netif_msg_init(msg_level, NETIF_MSG_DRV |
| 3720 | | NETIF_MSG_PROBE | NETIF_MSG_LINK); |
| 3721 | |
| 3722 | skb_queue_head_init(&dev->rxq); |
| 3723 | skb_queue_head_init(&dev->txq); |
| 3724 | skb_queue_head_init(&dev->done); |
| 3725 | skb_queue_head_init(&dev->rxq_pause); |
| 3726 | skb_queue_head_init(&dev->txq_pend); |
| 3727 | mutex_init(&dev->phy_mutex); |
| 3728 | |
| 3729 | tasklet_init(&dev->bh, lan78xx_bh, (unsigned long)dev); |
| 3730 | INIT_DELAYED_WORK(&dev->wq, lan78xx_delayedwork); |
| 3731 | init_usb_anchor(&dev->deferred); |
| 3732 | |
| 3733 | netdev->netdev_ops = &lan78xx_netdev_ops; |
| 3734 | netdev->watchdog_timeo = TX_TIMEOUT_JIFFIES; |
| 3735 | netdev->ethtool_ops = &lan78xx_ethtool_ops; |
| 3736 | |
Woojung Huh | 20ff556 | 2016-03-16 22:10:40 +0000 | [diff] [blame] | 3737 | dev->delta = 1; |
Kees Cook | d28bb96 | 2017-10-16 17:29:32 -0700 | [diff] [blame] | 3738 | timer_setup(&dev->stat_monitor, lan78xx_stat_monitor, 0); |
Woojung Huh | 20ff556 | 2016-03-16 22:10:40 +0000 | [diff] [blame] | 3739 | |
| 3740 | mutex_init(&dev->stats.access_lock); |
| 3741 | |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 3742 | ret = lan78xx_bind(dev, intf); |
| 3743 | if (ret < 0) |
| 3744 | goto out2; |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 3745 | |
| 3746 | if (netdev->mtu > (dev->hard_mtu - netdev->hard_header_len)) |
| 3747 | netdev->mtu = dev->hard_mtu - netdev->hard_header_len; |
| 3748 | |
Jarod Wilson | f77f0ae | 2016-10-20 13:55:17 -0400 | [diff] [blame] | 3749 | /* MTU range: 68 - 9000 */ |
| 3750 | netdev->max_mtu = MAX_SINGLE_PACKET_SIZE; |
| 3751 | |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 3752 | dev->ep_blkin = (intf->cur_altsetting)->endpoint + 0; |
| 3753 | dev->ep_blkout = (intf->cur_altsetting)->endpoint + 1; |
| 3754 | dev->ep_intr = (intf->cur_altsetting)->endpoint + 2; |
| 3755 | |
| 3756 | dev->pipe_in = usb_rcvbulkpipe(udev, BULK_IN_PIPE); |
| 3757 | dev->pipe_out = usb_sndbulkpipe(udev, BULK_OUT_PIPE); |
| 3758 | |
| 3759 | dev->pipe_intr = usb_rcvintpipe(dev->udev, |
| 3760 | dev->ep_intr->desc.bEndpointAddress & |
| 3761 | USB_ENDPOINT_NUMBER_MASK); |
| 3762 | period = dev->ep_intr->desc.bInterval; |
| 3763 | |
| 3764 | maxp = usb_maxpacket(dev->udev, dev->pipe_intr, 0); |
| 3765 | buf = kmalloc(maxp, GFP_KERNEL); |
| 3766 | if (buf) { |
| 3767 | dev->urb_intr = usb_alloc_urb(0, GFP_KERNEL); |
| 3768 | if (!dev->urb_intr) { |
Pan Bian | 5192083 | 2016-12-03 19:24:48 +0800 | [diff] [blame] | 3769 | ret = -ENOMEM; |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 3770 | kfree(buf); |
| 3771 | goto out3; |
| 3772 | } else { |
| 3773 | usb_fill_int_urb(dev->urb_intr, dev->udev, |
| 3774 | dev->pipe_intr, buf, maxp, |
| 3775 | intr_complete, dev, period); |
| 3776 | } |
| 3777 | } |
| 3778 | |
| 3779 | dev->maxpacket = usb_maxpacket(dev->udev, dev->pipe_out, 1); |
| 3780 | |
| 3781 | /* driver requires remote-wakeup capability during autosuspend. */ |
| 3782 | intf->needs_remote_wakeup = 1; |
| 3783 | |
| 3784 | ret = register_netdev(netdev); |
| 3785 | if (ret != 0) { |
| 3786 | netif_err(dev, probe, netdev, "couldn't register the device\n"); |
Nisar Sayed | fb52c3b | 2017-08-01 10:24:17 +0000 | [diff] [blame] | 3787 | goto out3; |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 3788 | } |
| 3789 | |
| 3790 | usb_set_intfdata(intf, dev); |
| 3791 | |
| 3792 | ret = device_set_wakeup_enable(&udev->dev, true); |
| 3793 | |
| 3794 | /* Default delay of 2sec has more overhead than advantage. |
| 3795 | * Set to 10sec as default. |
| 3796 | */ |
| 3797 | pm_runtime_set_autosuspend_delay(&udev->dev, |
| 3798 | DEFAULT_AUTOSUSPEND_DELAY); |
| 3799 | |
Alexander Graf | 92571a1 | 2018-04-04 00:19:35 +0200 | [diff] [blame] | 3800 | ret = lan78xx_phy_init(dev); |
| 3801 | if (ret < 0) |
| 3802 | goto out4; |
| 3803 | |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 3804 | return 0; |
| 3805 | |
Alexander Graf | 92571a1 | 2018-04-04 00:19:35 +0200 | [diff] [blame] | 3806 | out4: |
| 3807 | unregister_netdev(netdev); |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 3808 | out3: |
| 3809 | lan78xx_unbind(dev, intf); |
| 3810 | out2: |
| 3811 | free_netdev(netdev); |
| 3812 | out1: |
| 3813 | usb_put_dev(udev); |
| 3814 | |
| 3815 | return ret; |
| 3816 | } |
| 3817 | |
| 3818 | static u16 lan78xx_wakeframe_crc16(const u8 *buf, int len) |
| 3819 | { |
| 3820 | const u16 crc16poly = 0x8005; |
| 3821 | int i; |
| 3822 | u16 bit, crc, msb; |
| 3823 | u8 data; |
| 3824 | |
| 3825 | crc = 0xFFFF; |
| 3826 | for (i = 0; i < len; i++) { |
| 3827 | data = *buf++; |
| 3828 | for (bit = 0; bit < 8; bit++) { |
| 3829 | msb = crc >> 15; |
| 3830 | crc <<= 1; |
| 3831 | |
| 3832 | if (msb ^ (u16)(data & 1)) { |
| 3833 | crc ^= crc16poly; |
| 3834 | crc |= (u16)0x0001U; |
| 3835 | } |
| 3836 | data >>= 1; |
| 3837 | } |
| 3838 | } |
| 3839 | |
| 3840 | return crc; |
| 3841 | } |
| 3842 | |
| 3843 | static int lan78xx_set_suspend(struct lan78xx_net *dev, u32 wol) |
| 3844 | { |
| 3845 | u32 buf; |
| 3846 | int ret; |
| 3847 | int mask_index; |
| 3848 | u16 crc; |
| 3849 | u32 temp_wucsr; |
| 3850 | u32 temp_pmt_ctl; |
| 3851 | const u8 ipv4_multicast[3] = { 0x01, 0x00, 0x5E }; |
| 3852 | const u8 ipv6_multicast[3] = { 0x33, 0x33 }; |
| 3853 | const u8 arp_type[2] = { 0x08, 0x06 }; |
| 3854 | |
| 3855 | ret = lan78xx_read_reg(dev, MAC_TX, &buf); |
| 3856 | buf &= ~MAC_TX_TXEN_; |
| 3857 | ret = lan78xx_write_reg(dev, MAC_TX, buf); |
| 3858 | ret = lan78xx_read_reg(dev, MAC_RX, &buf); |
| 3859 | buf &= ~MAC_RX_RXEN_; |
| 3860 | ret = lan78xx_write_reg(dev, MAC_RX, buf); |
| 3861 | |
| 3862 | ret = lan78xx_write_reg(dev, WUCSR, 0); |
| 3863 | ret = lan78xx_write_reg(dev, WUCSR2, 0); |
| 3864 | ret = lan78xx_write_reg(dev, WK_SRC, 0xFFF1FF1FUL); |
| 3865 | |
| 3866 | temp_wucsr = 0; |
| 3867 | |
| 3868 | temp_pmt_ctl = 0; |
| 3869 | ret = lan78xx_read_reg(dev, PMT_CTL, &temp_pmt_ctl); |
| 3870 | temp_pmt_ctl &= ~PMT_CTL_RES_CLR_WKP_EN_; |
| 3871 | temp_pmt_ctl |= PMT_CTL_RES_CLR_WKP_STS_; |
| 3872 | |
| 3873 | for (mask_index = 0; mask_index < NUM_OF_WUF_CFG; mask_index++) |
| 3874 | ret = lan78xx_write_reg(dev, WUF_CFG(mask_index), 0); |
| 3875 | |
| 3876 | mask_index = 0; |
| 3877 | if (wol & WAKE_PHY) { |
| 3878 | temp_pmt_ctl |= PMT_CTL_PHY_WAKE_EN_; |
| 3879 | |
| 3880 | temp_pmt_ctl |= PMT_CTL_WOL_EN_; |
| 3881 | temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_; |
| 3882 | temp_pmt_ctl |= PMT_CTL_SUS_MODE_0_; |
| 3883 | } |
| 3884 | if (wol & WAKE_MAGIC) { |
| 3885 | temp_wucsr |= WUCSR_MPEN_; |
| 3886 | |
| 3887 | temp_pmt_ctl |= PMT_CTL_WOL_EN_; |
| 3888 | temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_; |
| 3889 | temp_pmt_ctl |= PMT_CTL_SUS_MODE_3_; |
| 3890 | } |
| 3891 | if (wol & WAKE_BCAST) { |
| 3892 | temp_wucsr |= WUCSR_BCST_EN_; |
| 3893 | |
| 3894 | temp_pmt_ctl |= PMT_CTL_WOL_EN_; |
| 3895 | temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_; |
| 3896 | temp_pmt_ctl |= PMT_CTL_SUS_MODE_0_; |
| 3897 | } |
| 3898 | if (wol & WAKE_MCAST) { |
| 3899 | temp_wucsr |= WUCSR_WAKE_EN_; |
| 3900 | |
| 3901 | /* set WUF_CFG & WUF_MASK for IPv4 Multicast */ |
| 3902 | crc = lan78xx_wakeframe_crc16(ipv4_multicast, 3); |
| 3903 | ret = lan78xx_write_reg(dev, WUF_CFG(mask_index), |
| 3904 | WUF_CFGX_EN_ | |
| 3905 | WUF_CFGX_TYPE_MCAST_ | |
| 3906 | (0 << WUF_CFGX_OFFSET_SHIFT_) | |
| 3907 | (crc & WUF_CFGX_CRC16_MASK_)); |
| 3908 | |
| 3909 | ret = lan78xx_write_reg(dev, WUF_MASK0(mask_index), 7); |
| 3910 | ret = lan78xx_write_reg(dev, WUF_MASK1(mask_index), 0); |
| 3911 | ret = lan78xx_write_reg(dev, WUF_MASK2(mask_index), 0); |
| 3912 | ret = lan78xx_write_reg(dev, WUF_MASK3(mask_index), 0); |
| 3913 | mask_index++; |
| 3914 | |
| 3915 | /* for IPv6 Multicast */ |
| 3916 | crc = lan78xx_wakeframe_crc16(ipv6_multicast, 2); |
| 3917 | ret = lan78xx_write_reg(dev, WUF_CFG(mask_index), |
| 3918 | WUF_CFGX_EN_ | |
| 3919 | WUF_CFGX_TYPE_MCAST_ | |
| 3920 | (0 << WUF_CFGX_OFFSET_SHIFT_) | |
| 3921 | (crc & WUF_CFGX_CRC16_MASK_)); |
| 3922 | |
| 3923 | ret = lan78xx_write_reg(dev, WUF_MASK0(mask_index), 3); |
| 3924 | ret = lan78xx_write_reg(dev, WUF_MASK1(mask_index), 0); |
| 3925 | ret = lan78xx_write_reg(dev, WUF_MASK2(mask_index), 0); |
| 3926 | ret = lan78xx_write_reg(dev, WUF_MASK3(mask_index), 0); |
| 3927 | mask_index++; |
| 3928 | |
| 3929 | temp_pmt_ctl |= PMT_CTL_WOL_EN_; |
| 3930 | temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_; |
| 3931 | temp_pmt_ctl |= PMT_CTL_SUS_MODE_0_; |
| 3932 | } |
| 3933 | if (wol & WAKE_UCAST) { |
| 3934 | temp_wucsr |= WUCSR_PFDA_EN_; |
| 3935 | |
| 3936 | temp_pmt_ctl |= PMT_CTL_WOL_EN_; |
| 3937 | temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_; |
| 3938 | temp_pmt_ctl |= PMT_CTL_SUS_MODE_0_; |
| 3939 | } |
| 3940 | if (wol & WAKE_ARP) { |
| 3941 | temp_wucsr |= WUCSR_WAKE_EN_; |
| 3942 | |
| 3943 | /* set WUF_CFG & WUF_MASK |
| 3944 | * for packettype (offset 12,13) = ARP (0x0806) |
| 3945 | */ |
| 3946 | crc = lan78xx_wakeframe_crc16(arp_type, 2); |
| 3947 | ret = lan78xx_write_reg(dev, WUF_CFG(mask_index), |
| 3948 | WUF_CFGX_EN_ | |
| 3949 | WUF_CFGX_TYPE_ALL_ | |
| 3950 | (0 << WUF_CFGX_OFFSET_SHIFT_) | |
| 3951 | (crc & WUF_CFGX_CRC16_MASK_)); |
| 3952 | |
| 3953 | ret = lan78xx_write_reg(dev, WUF_MASK0(mask_index), 0x3000); |
| 3954 | ret = lan78xx_write_reg(dev, WUF_MASK1(mask_index), 0); |
| 3955 | ret = lan78xx_write_reg(dev, WUF_MASK2(mask_index), 0); |
| 3956 | ret = lan78xx_write_reg(dev, WUF_MASK3(mask_index), 0); |
| 3957 | mask_index++; |
| 3958 | |
| 3959 | temp_pmt_ctl |= PMT_CTL_WOL_EN_; |
| 3960 | temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_; |
| 3961 | temp_pmt_ctl |= PMT_CTL_SUS_MODE_0_; |
| 3962 | } |
| 3963 | |
| 3964 | ret = lan78xx_write_reg(dev, WUCSR, temp_wucsr); |
| 3965 | |
| 3966 | /* when multiple WOL bits are set */ |
| 3967 | if (hweight_long((unsigned long)wol) > 1) { |
| 3968 | temp_pmt_ctl |= PMT_CTL_WOL_EN_; |
| 3969 | temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_; |
| 3970 | temp_pmt_ctl |= PMT_CTL_SUS_MODE_0_; |
| 3971 | } |
| 3972 | ret = lan78xx_write_reg(dev, PMT_CTL, temp_pmt_ctl); |
| 3973 | |
| 3974 | /* clear WUPS */ |
| 3975 | ret = lan78xx_read_reg(dev, PMT_CTL, &buf); |
| 3976 | buf |= PMT_CTL_WUPS_MASK_; |
| 3977 | ret = lan78xx_write_reg(dev, PMT_CTL, buf); |
| 3978 | |
| 3979 | ret = lan78xx_read_reg(dev, MAC_RX, &buf); |
| 3980 | buf |= MAC_RX_RXEN_; |
| 3981 | ret = lan78xx_write_reg(dev, MAC_RX, buf); |
| 3982 | |
| 3983 | return 0; |
| 3984 | } |
| 3985 | |
Baoyou Xie | e0c79ff | 2016-09-06 16:19:02 +0800 | [diff] [blame] | 3986 | static int lan78xx_suspend(struct usb_interface *intf, pm_message_t message) |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 3987 | { |
| 3988 | struct lan78xx_net *dev = usb_get_intfdata(intf); |
| 3989 | struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]); |
| 3990 | u32 buf; |
| 3991 | int ret; |
| 3992 | int event; |
| 3993 | |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 3994 | event = message.event; |
| 3995 | |
| 3996 | if (!dev->suspend_count++) { |
| 3997 | spin_lock_irq(&dev->txq.lock); |
| 3998 | /* don't autosuspend while transmitting */ |
| 3999 | if ((skb_queue_len(&dev->txq) || |
| 4000 | skb_queue_len(&dev->txq_pend)) && |
| 4001 | PMSG_IS_AUTO(message)) { |
| 4002 | spin_unlock_irq(&dev->txq.lock); |
| 4003 | ret = -EBUSY; |
| 4004 | goto out; |
| 4005 | } else { |
| 4006 | set_bit(EVENT_DEV_ASLEEP, &dev->flags); |
| 4007 | spin_unlock_irq(&dev->txq.lock); |
| 4008 | } |
| 4009 | |
| 4010 | /* stop TX & RX */ |
| 4011 | ret = lan78xx_read_reg(dev, MAC_TX, &buf); |
| 4012 | buf &= ~MAC_TX_TXEN_; |
| 4013 | ret = lan78xx_write_reg(dev, MAC_TX, buf); |
| 4014 | ret = lan78xx_read_reg(dev, MAC_RX, &buf); |
| 4015 | buf &= ~MAC_RX_RXEN_; |
| 4016 | ret = lan78xx_write_reg(dev, MAC_RX, buf); |
| 4017 | |
| 4018 | /* empty out the rx and queues */ |
| 4019 | netif_device_detach(dev->net); |
| 4020 | lan78xx_terminate_urbs(dev); |
| 4021 | usb_kill_urb(dev->urb_intr); |
| 4022 | |
| 4023 | /* reattach */ |
| 4024 | netif_device_attach(dev->net); |
| 4025 | } |
| 4026 | |
| 4027 | if (test_bit(EVENT_DEV_ASLEEP, &dev->flags)) { |
Woojung Huh | 20ff556 | 2016-03-16 22:10:40 +0000 | [diff] [blame] | 4028 | del_timer(&dev->stat_monitor); |
| 4029 | |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 4030 | if (PMSG_IS_AUTO(message)) { |
| 4031 | /* auto suspend (selective suspend) */ |
| 4032 | ret = lan78xx_read_reg(dev, MAC_TX, &buf); |
| 4033 | buf &= ~MAC_TX_TXEN_; |
| 4034 | ret = lan78xx_write_reg(dev, MAC_TX, buf); |
| 4035 | ret = lan78xx_read_reg(dev, MAC_RX, &buf); |
| 4036 | buf &= ~MAC_RX_RXEN_; |
| 4037 | ret = lan78xx_write_reg(dev, MAC_RX, buf); |
| 4038 | |
| 4039 | ret = lan78xx_write_reg(dev, WUCSR, 0); |
| 4040 | ret = lan78xx_write_reg(dev, WUCSR2, 0); |
| 4041 | ret = lan78xx_write_reg(dev, WK_SRC, 0xFFF1FF1FUL); |
| 4042 | |
| 4043 | /* set goodframe wakeup */ |
| 4044 | ret = lan78xx_read_reg(dev, WUCSR, &buf); |
| 4045 | |
| 4046 | buf |= WUCSR_RFE_WAKE_EN_; |
| 4047 | buf |= WUCSR_STORE_WAKE_; |
| 4048 | |
| 4049 | ret = lan78xx_write_reg(dev, WUCSR, buf); |
| 4050 | |
| 4051 | ret = lan78xx_read_reg(dev, PMT_CTL, &buf); |
| 4052 | |
| 4053 | buf &= ~PMT_CTL_RES_CLR_WKP_EN_; |
| 4054 | buf |= PMT_CTL_RES_CLR_WKP_STS_; |
| 4055 | |
| 4056 | buf |= PMT_CTL_PHY_WAKE_EN_; |
| 4057 | buf |= PMT_CTL_WOL_EN_; |
| 4058 | buf &= ~PMT_CTL_SUS_MODE_MASK_; |
| 4059 | buf |= PMT_CTL_SUS_MODE_3_; |
| 4060 | |
| 4061 | ret = lan78xx_write_reg(dev, PMT_CTL, buf); |
| 4062 | |
| 4063 | ret = lan78xx_read_reg(dev, PMT_CTL, &buf); |
| 4064 | |
| 4065 | buf |= PMT_CTL_WUPS_MASK_; |
| 4066 | |
| 4067 | ret = lan78xx_write_reg(dev, PMT_CTL, buf); |
| 4068 | |
| 4069 | ret = lan78xx_read_reg(dev, MAC_RX, &buf); |
| 4070 | buf |= MAC_RX_RXEN_; |
| 4071 | ret = lan78xx_write_reg(dev, MAC_RX, buf); |
| 4072 | } else { |
| 4073 | lan78xx_set_suspend(dev, pdata->wol); |
| 4074 | } |
| 4075 | } |
| 4076 | |
Woojung.Huh@microchip.com | 49d28b56 | 2015-09-25 21:13:48 +0000 | [diff] [blame] | 4077 | ret = 0; |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 4078 | out: |
| 4079 | return ret; |
| 4080 | } |
| 4081 | |
Baoyou Xie | e0c79ff | 2016-09-06 16:19:02 +0800 | [diff] [blame] | 4082 | static int lan78xx_resume(struct usb_interface *intf) |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 4083 | { |
| 4084 | struct lan78xx_net *dev = usb_get_intfdata(intf); |
| 4085 | struct sk_buff *skb; |
| 4086 | struct urb *res; |
| 4087 | int ret; |
| 4088 | u32 buf; |
| 4089 | |
Woojung Huh | 20ff556 | 2016-03-16 22:10:40 +0000 | [diff] [blame] | 4090 | if (!timer_pending(&dev->stat_monitor)) { |
| 4091 | dev->delta = 1; |
| 4092 | mod_timer(&dev->stat_monitor, |
| 4093 | jiffies + STAT_UPDATE_TIMER); |
| 4094 | } |
| 4095 | |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 4096 | if (!--dev->suspend_count) { |
| 4097 | /* resume interrupt URBs */ |
| 4098 | if (dev->urb_intr && test_bit(EVENT_DEV_OPEN, &dev->flags)) |
| 4099 | usb_submit_urb(dev->urb_intr, GFP_NOIO); |
| 4100 | |
| 4101 | spin_lock_irq(&dev->txq.lock); |
| 4102 | while ((res = usb_get_from_anchor(&dev->deferred))) { |
| 4103 | skb = (struct sk_buff *)res->context; |
| 4104 | ret = usb_submit_urb(res, GFP_ATOMIC); |
| 4105 | if (ret < 0) { |
| 4106 | dev_kfree_skb_any(skb); |
| 4107 | usb_free_urb(res); |
| 4108 | usb_autopm_put_interface_async(dev->intf); |
| 4109 | } else { |
Florian Westphal | 860e953 | 2016-05-03 16:33:13 +0200 | [diff] [blame] | 4110 | netif_trans_update(dev->net); |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 4111 | lan78xx_queue_skb(&dev->txq, skb, tx_start); |
| 4112 | } |
| 4113 | } |
| 4114 | |
| 4115 | clear_bit(EVENT_DEV_ASLEEP, &dev->flags); |
| 4116 | spin_unlock_irq(&dev->txq.lock); |
| 4117 | |
| 4118 | if (test_bit(EVENT_DEV_OPEN, &dev->flags)) { |
| 4119 | if (!(skb_queue_len(&dev->txq) >= dev->tx_qlen)) |
| 4120 | netif_start_queue(dev->net); |
| 4121 | tasklet_schedule(&dev->bh); |
| 4122 | } |
| 4123 | } |
| 4124 | |
| 4125 | ret = lan78xx_write_reg(dev, WUCSR2, 0); |
| 4126 | ret = lan78xx_write_reg(dev, WUCSR, 0); |
| 4127 | ret = lan78xx_write_reg(dev, WK_SRC, 0xFFF1FF1FUL); |
| 4128 | |
| 4129 | ret = lan78xx_write_reg(dev, WUCSR2, WUCSR2_NS_RCD_ | |
| 4130 | WUCSR2_ARP_RCD_ | |
| 4131 | WUCSR2_IPV6_TCPSYN_RCD_ | |
| 4132 | WUCSR2_IPV4_TCPSYN_RCD_); |
| 4133 | |
| 4134 | ret = lan78xx_write_reg(dev, WUCSR, WUCSR_EEE_TX_WAKE_ | |
| 4135 | WUCSR_EEE_RX_WAKE_ | |
| 4136 | WUCSR_PFDA_FR_ | |
| 4137 | WUCSR_RFE_WAKE_FR_ | |
| 4138 | WUCSR_WUFR_ | |
| 4139 | WUCSR_MPR_ | |
| 4140 | WUCSR_BCST_FR_); |
| 4141 | |
| 4142 | ret = lan78xx_read_reg(dev, MAC_TX, &buf); |
| 4143 | buf |= MAC_TX_TXEN_; |
| 4144 | ret = lan78xx_write_reg(dev, MAC_TX, buf); |
| 4145 | |
| 4146 | return 0; |
| 4147 | } |
| 4148 | |
Baoyou Xie | e0c79ff | 2016-09-06 16:19:02 +0800 | [diff] [blame] | 4149 | static int lan78xx_reset_resume(struct usb_interface *intf) |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 4150 | { |
| 4151 | struct lan78xx_net *dev = usb_get_intfdata(intf); |
| 4152 | |
| 4153 | lan78xx_reset(dev); |
Woojung.Huh@microchip.com | ce85e13 | 2015-09-16 23:40:54 +0000 | [diff] [blame] | 4154 | |
Alexander Graf | 92571a1 | 2018-04-04 00:19:35 +0200 | [diff] [blame] | 4155 | phy_start(dev->net->phydev); |
Woojung.Huh@microchip.com | ce85e13 | 2015-09-16 23:40:54 +0000 | [diff] [blame] | 4156 | |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 4157 | return lan78xx_resume(intf); |
| 4158 | } |
| 4159 | |
| 4160 | static const struct usb_device_id products[] = { |
| 4161 | { |
| 4162 | /* LAN7800 USB Gigabit Ethernet Device */ |
| 4163 | USB_DEVICE(LAN78XX_USB_VENDOR_ID, LAN7800_USB_PRODUCT_ID), |
| 4164 | }, |
| 4165 | { |
| 4166 | /* LAN7850 USB Gigabit Ethernet Device */ |
| 4167 | USB_DEVICE(LAN78XX_USB_VENDOR_ID, LAN7850_USB_PRODUCT_ID), |
| 4168 | }, |
Woojung Huh | 02dc1f3 | 2016-12-07 20:26:25 +0000 | [diff] [blame] | 4169 | { |
| 4170 | /* LAN7801 USB Gigabit Ethernet Device */ |
| 4171 | USB_DEVICE(LAN78XX_USB_VENDOR_ID, LAN7801_USB_PRODUCT_ID), |
| 4172 | }, |
Woojung.Huh@microchip.com | 55d7de9 | 2015-07-30 19:45:21 +0000 | [diff] [blame] | 4173 | {}, |
| 4174 | }; |
| 4175 | MODULE_DEVICE_TABLE(usb, products); |
| 4176 | |
| 4177 | static struct usb_driver lan78xx_driver = { |
| 4178 | .name = DRIVER_NAME, |
| 4179 | .id_table = products, |
| 4180 | .probe = lan78xx_probe, |
| 4181 | .disconnect = lan78xx_disconnect, |
| 4182 | .suspend = lan78xx_suspend, |
| 4183 | .resume = lan78xx_resume, |
| 4184 | .reset_resume = lan78xx_reset_resume, |
| 4185 | .supports_autosuspend = 1, |
| 4186 | .disable_hub_initiated_lpm = 1, |
| 4187 | }; |
| 4188 | |
| 4189 | module_usb_driver(lan78xx_driver); |
| 4190 | |
| 4191 | MODULE_AUTHOR(DRIVER_AUTHOR); |
| 4192 | MODULE_DESCRIPTION(DRIVER_DESC); |
| 4193 | MODULE_LICENSE("GPL"); |