Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* epic100.c: A SMC 83c170 EPIC/100 Fast Ethernet driver for Linux. */ |
| 2 | /* |
| 3 | Written/copyright 1997-2001 by Donald Becker. |
| 4 | |
| 5 | This software may be used and distributed according to the terms of |
| 6 | the GNU General Public License (GPL), incorporated herein by reference. |
| 7 | Drivers based on or derived from this code fall under the GPL and must |
| 8 | retain the authorship, copyright and license notice. This file is not |
| 9 | a complete program and may only be used when the entire operating |
| 10 | system is licensed under the GPL. |
| 11 | |
| 12 | This driver is for the SMC83c170/175 "EPIC" series, as used on the |
| 13 | SMC EtherPower II 9432 PCI adapter, and several CardBus cards. |
| 14 | |
| 15 | The author may be reached as becker@scyld.com, or C/O |
| 16 | Scyld Computing Corporation |
| 17 | 410 Severn Ave., Suite 210 |
| 18 | Annapolis MD 21403 |
| 19 | |
| 20 | Information and updates available at |
| 21 | http://www.scyld.com/network/epic100.html |
Jeff Garzik | 36e1e84 | 2006-06-27 07:38:33 -0400 | [diff] [blame] | 22 | [this link no longer provides anything useful -jgarzik] |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 23 | |
| 24 | --------------------------------------------------------------------- |
Jeff Garzik | f3b197a | 2006-05-26 21:39:03 -0400 | [diff] [blame] | 25 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 26 | */ |
| 27 | |
| 28 | #define DRV_NAME "epic100" |
Andy Gospodarek | d5b2069 | 2006-09-11 17:39:18 -0400 | [diff] [blame] | 29 | #define DRV_VERSION "2.1" |
| 30 | #define DRV_RELDATE "Sept 11, 2006" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | |
| 32 | /* The user-configurable values. |
| 33 | These may be modified when a driver module is loaded.*/ |
| 34 | |
| 35 | static int debug = 1; /* 1 normal messages, 0 quiet .. 7 verbose. */ |
| 36 | |
| 37 | /* Used to pass the full-duplex flag, etc. */ |
| 38 | #define MAX_UNITS 8 /* More are supported, limit only on options */ |
| 39 | static int options[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1}; |
| 40 | static int full_duplex[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1}; |
| 41 | |
| 42 | /* Set the copy breakpoint for the copy-only-tiny-frames scheme. |
| 43 | Setting to > 1518 effectively disables this feature. */ |
| 44 | static int rx_copybreak; |
| 45 | |
| 46 | /* Operational parameters that are set at compile time. */ |
| 47 | |
| 48 | /* Keep the ring sizes a power of two for operational efficiency. |
| 49 | The compiler will convert <unsigned>'%'<2^N> into a bit mask. |
| 50 | Making the Tx ring too large decreases the effectiveness of channel |
| 51 | bonding and packet priority. |
| 52 | There are no ill effects from too-large receive rings. */ |
| 53 | #define TX_RING_SIZE 256 |
| 54 | #define TX_QUEUE_LEN 240 /* Limit ring entries actually used. */ |
| 55 | #define RX_RING_SIZE 256 |
| 56 | #define TX_TOTAL_SIZE TX_RING_SIZE*sizeof(struct epic_tx_desc) |
| 57 | #define RX_TOTAL_SIZE RX_RING_SIZE*sizeof(struct epic_rx_desc) |
| 58 | |
| 59 | /* Operational parameters that usually are not changed. */ |
| 60 | /* Time in jiffies before concluding the transmitter is hung. */ |
| 61 | #define TX_TIMEOUT (2*HZ) |
| 62 | |
| 63 | #define PKT_BUF_SZ 1536 /* Size of each temporary Rx buffer.*/ |
| 64 | |
| 65 | /* Bytes transferred to chip before transmission starts. */ |
| 66 | /* Initial threshold, increased on underflow, rounded down to 4 byte units. */ |
| 67 | #define TX_FIFO_THRESH 256 |
| 68 | #define RX_FIFO_THRESH 1 /* 0-3, 0==32, 64,96, or 3==128 bytes */ |
| 69 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 70 | #include <linux/module.h> |
| 71 | #include <linux/kernel.h> |
| 72 | #include <linux/string.h> |
| 73 | #include <linux/timer.h> |
| 74 | #include <linux/errno.h> |
| 75 | #include <linux/ioport.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 76 | #include <linux/interrupt.h> |
| 77 | #include <linux/pci.h> |
| 78 | #include <linux/delay.h> |
| 79 | #include <linux/netdevice.h> |
| 80 | #include <linux/etherdevice.h> |
| 81 | #include <linux/skbuff.h> |
| 82 | #include <linux/init.h> |
| 83 | #include <linux/spinlock.h> |
| 84 | #include <linux/ethtool.h> |
| 85 | #include <linux/mii.h> |
| 86 | #include <linux/crc32.h> |
| 87 | #include <linux/bitops.h> |
| 88 | #include <asm/io.h> |
| 89 | #include <asm/uaccess.h> |
Roland Dreier | 9e2d11b | 2010-06-02 10:36:53 +0000 | [diff] [blame] | 90 | #include <asm/byteorder.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 91 | |
| 92 | /* These identify the driver base version and may not be removed. */ |
Bill Pemberton | b0171cd | 2012-12-03 09:23:42 -0500 | [diff] [blame] | 93 | static char version[] = |
Ben Boeckel | 3ee307d | 2013-11-01 08:53:30 -0400 | [diff] [blame] | 94 | DRV_NAME ".c:v1.11 1/7/2001 Written by Donald Becker <becker@scyld.com>"; |
Bill Pemberton | b0171cd | 2012-12-03 09:23:42 -0500 | [diff] [blame] | 95 | static char version2[] = |
Ben Boeckel | 3ee307d | 2013-11-01 08:53:30 -0400 | [diff] [blame] | 96 | " (unofficial 2.4.x kernel port, version " DRV_VERSION ", " DRV_RELDATE ")"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 97 | |
| 98 | MODULE_AUTHOR("Donald Becker <becker@scyld.com>"); |
| 99 | MODULE_DESCRIPTION("SMC 83c170 EPIC series Ethernet driver"); |
| 100 | MODULE_LICENSE("GPL"); |
| 101 | |
| 102 | module_param(debug, int, 0); |
| 103 | module_param(rx_copybreak, int, 0); |
| 104 | module_param_array(options, int, NULL, 0); |
| 105 | module_param_array(full_duplex, int, NULL, 0); |
| 106 | MODULE_PARM_DESC(debug, "EPIC/100 debug level (0-5)"); |
| 107 | MODULE_PARM_DESC(options, "EPIC/100: Bits 0-3: media type, bit 4: full duplex"); |
| 108 | MODULE_PARM_DESC(rx_copybreak, "EPIC/100 copy breakpoint for copy-only-tiny-frames"); |
| 109 | MODULE_PARM_DESC(full_duplex, "EPIC/100 full duplex setting(s) (1)"); |
| 110 | |
| 111 | /* |
| 112 | Theory of Operation |
| 113 | |
| 114 | I. Board Compatibility |
| 115 | |
| 116 | This device driver is designed for the SMC "EPIC/100", the SMC |
| 117 | single-chip Ethernet controllers for PCI. This chip is used on |
| 118 | the SMC EtherPower II boards. |
| 119 | |
| 120 | II. Board-specific settings |
| 121 | |
| 122 | PCI bus devices are configured by the system at boot time, so no jumpers |
| 123 | need to be set on the board. The system BIOS will assign the |
| 124 | PCI INTA signal to a (preferably otherwise unused) system IRQ line. |
| 125 | Note: Kernel versions earlier than 1.3.73 do not support shared PCI |
| 126 | interrupt lines. |
| 127 | |
| 128 | III. Driver operation |
| 129 | |
| 130 | IIIa. Ring buffers |
| 131 | |
| 132 | IVb. References |
| 133 | |
Justin P. Mattock | 631dd1a | 2010-10-18 11:03:14 +0200 | [diff] [blame] | 134 | http://www.smsc.com/media/Downloads_Public/discontinued/83c171.pdf |
| 135 | http://www.smsc.com/media/Downloads_Public/discontinued/83c175.pdf |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 136 | http://scyld.com/expert/NWay.html |
| 137 | http://www.national.com/pf/DP/DP83840A.html |
| 138 | |
| 139 | IVc. Errata |
| 140 | |
| 141 | */ |
| 142 | |
| 143 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 144 | enum chip_capability_flags { MII_PWRDWN=1, TYPE2_INTR=2, NO_MII=4 }; |
| 145 | |
| 146 | #define EPIC_TOTAL_SIZE 0x100 |
| 147 | #define USE_IO_OPS 1 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 148 | |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 149 | #ifdef USE_IO_OPS |
| 150 | #define EPIC_BAR 0 |
| 151 | #else |
| 152 | #define EPIC_BAR 1 |
| 153 | #endif |
| 154 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 155 | typedef enum { |
| 156 | SMSC_83C170_0, |
| 157 | SMSC_83C170, |
| 158 | SMSC_83C175, |
| 159 | } chip_t; |
| 160 | |
| 161 | |
| 162 | struct epic_chip_info { |
| 163 | const char *name; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 164 | int drv_flags; /* Driver use, intended as capability flags. */ |
| 165 | }; |
| 166 | |
| 167 | |
| 168 | /* indexed by chip_t */ |
Arjan van de Ven | f71e130 | 2006-03-03 21:33:57 -0500 | [diff] [blame] | 169 | static const struct epic_chip_info pci_id_tbl[] = { |
Jeff Garzik | 36e1e84 | 2006-06-27 07:38:33 -0400 | [diff] [blame] | 170 | { "SMSC EPIC/100 83c170", TYPE2_INTR | NO_MII | MII_PWRDWN }, |
| 171 | { "SMSC EPIC/100 83c170", TYPE2_INTR }, |
| 172 | { "SMSC EPIC/C 83c175", TYPE2_INTR | MII_PWRDWN }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 173 | }; |
| 174 | |
| 175 | |
Benoit Taine | 9baa3c3 | 2014-08-08 15:56:03 +0200 | [diff] [blame] | 176 | static const struct pci_device_id epic_pci_tbl[] = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 177 | { 0x10B8, 0x0005, 0x1092, 0x0AB4, 0, 0, SMSC_83C170_0 }, |
| 178 | { 0x10B8, 0x0005, PCI_ANY_ID, PCI_ANY_ID, 0, 0, SMSC_83C170 }, |
| 179 | { 0x10B8, 0x0006, PCI_ANY_ID, PCI_ANY_ID, |
| 180 | PCI_CLASS_NETWORK_ETHERNET << 8, 0xffff00, SMSC_83C175 }, |
| 181 | { 0,} |
| 182 | }; |
| 183 | MODULE_DEVICE_TABLE (pci, epic_pci_tbl); |
| 184 | |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 185 | #define ew16(reg, val) iowrite16(val, ioaddr + (reg)) |
| 186 | #define ew32(reg, val) iowrite32(val, ioaddr + (reg)) |
| 187 | #define er8(reg) ioread8(ioaddr + (reg)) |
| 188 | #define er16(reg) ioread16(ioaddr + (reg)) |
| 189 | #define er32(reg) ioread32(ioaddr + (reg)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 190 | |
| 191 | /* Offsets to registers, using the (ugh) SMC names. */ |
| 192 | enum epic_registers { |
| 193 | COMMAND=0, INTSTAT=4, INTMASK=8, GENCTL=0x0C, NVCTL=0x10, EECTL=0x14, |
| 194 | PCIBurstCnt=0x18, |
| 195 | TEST1=0x1C, CRCCNT=0x20, ALICNT=0x24, MPCNT=0x28, /* Rx error counters. */ |
| 196 | MIICtrl=0x30, MIIData=0x34, MIICfg=0x38, |
| 197 | LAN0=64, /* MAC address. */ |
| 198 | MC0=80, /* Multicast filter table. */ |
| 199 | RxCtrl=96, TxCtrl=112, TxSTAT=0x74, |
| 200 | PRxCDAR=0x84, RxSTAT=0xA4, EarlyRx=0xB0, PTxCDAR=0xC4, TxThresh=0xDC, |
| 201 | }; |
| 202 | |
| 203 | /* Interrupt register bits, using my own meaningful names. */ |
| 204 | enum IntrStatus { |
| 205 | TxIdle=0x40000, RxIdle=0x20000, IntrSummary=0x010000, |
| 206 | PCIBusErr170=0x7000, PCIBusErr175=0x1000, PhyEvent175=0x8000, |
| 207 | RxStarted=0x0800, RxEarlyWarn=0x0400, CntFull=0x0200, TxUnderrun=0x0100, |
| 208 | TxEmpty=0x0080, TxDone=0x0020, RxError=0x0010, |
| 209 | RxOverflow=0x0008, RxFull=0x0004, RxHeader=0x0002, RxDone=0x0001, |
| 210 | }; |
| 211 | enum CommandBits { |
| 212 | StopRx=1, StartRx=2, TxQueued=4, RxQueued=8, |
| 213 | StopTxDMA=0x20, StopRxDMA=0x40, RestartTx=0x80, |
| 214 | }; |
| 215 | |
| 216 | #define EpicRemoved 0xffffffff /* Chip failed or removed (CardBus) */ |
| 217 | |
| 218 | #define EpicNapiEvent (TxEmpty | TxDone | \ |
| 219 | RxDone | RxStarted | RxEarlyWarn | RxOverflow | RxFull) |
| 220 | #define EpicNormalEvent (0x0000ffff & ~EpicNapiEvent) |
| 221 | |
Arjan van de Ven | f71e130 | 2006-03-03 21:33:57 -0500 | [diff] [blame] | 222 | static const u16 media2miictl[16] = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 223 | 0, 0x0C00, 0x0C00, 0x2000, 0x0100, 0x2100, 0, 0, |
| 224 | 0, 0, 0, 0, 0, 0, 0, 0 }; |
| 225 | |
Al Viro | 9ebfd49 | 2008-03-16 22:22:04 +0000 | [diff] [blame] | 226 | /* |
| 227 | * The EPIC100 Rx and Tx buffer descriptors. Note that these |
| 228 | * really ARE host-endian; it's not a misannotation. We tell |
| 229 | * the card to byteswap them internally on big-endian hosts - |
Roland Dreier | 9e2d11b | 2010-06-02 10:36:53 +0000 | [diff] [blame] | 230 | * look for #ifdef __BIG_ENDIAN in epic_open(). |
Al Viro | 9ebfd49 | 2008-03-16 22:22:04 +0000 | [diff] [blame] | 231 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 232 | |
| 233 | struct epic_tx_desc { |
| 234 | u32 txstatus; |
| 235 | u32 bufaddr; |
| 236 | u32 buflength; |
| 237 | u32 next; |
| 238 | }; |
| 239 | |
| 240 | struct epic_rx_desc { |
| 241 | u32 rxstatus; |
| 242 | u32 bufaddr; |
| 243 | u32 buflength; |
| 244 | u32 next; |
| 245 | }; |
| 246 | |
| 247 | enum desc_status_bits { |
| 248 | DescOwn=0x8000, |
| 249 | }; |
| 250 | |
| 251 | #define PRIV_ALIGN 15 /* Required alignment mask */ |
| 252 | struct epic_private { |
| 253 | struct epic_rx_desc *rx_ring; |
| 254 | struct epic_tx_desc *tx_ring; |
| 255 | /* The saved address of a sent-in-place packet/buffer, for skfree(). */ |
| 256 | struct sk_buff* tx_skbuff[TX_RING_SIZE]; |
| 257 | /* The addresses of receive-in-place skbuffs. */ |
| 258 | struct sk_buff* rx_skbuff[RX_RING_SIZE]; |
| 259 | |
| 260 | dma_addr_t tx_ring_dma; |
| 261 | dma_addr_t rx_ring_dma; |
| 262 | |
| 263 | /* Ring pointers. */ |
| 264 | spinlock_t lock; /* Group with Tx control cache line. */ |
| 265 | spinlock_t napi_lock; |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 266 | struct napi_struct napi; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 267 | unsigned int reschedule_in_poll; |
| 268 | unsigned int cur_tx, dirty_tx; |
| 269 | |
| 270 | unsigned int cur_rx, dirty_rx; |
| 271 | u32 irq_mask; |
| 272 | unsigned int rx_buf_sz; /* Based on MTU+slack. */ |
| 273 | |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 274 | void __iomem *ioaddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 275 | struct pci_dev *pci_dev; /* PCI bus location. */ |
| 276 | int chip_id, chip_flags; |
| 277 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 278 | struct timer_list timer; /* Media selection timer. */ |
| 279 | int tx_threshold; |
| 280 | unsigned char mc_filter[8]; |
| 281 | signed char phys[4]; /* MII device addresses. */ |
| 282 | u16 advertising; /* NWay media advertisement */ |
| 283 | int mii_phy_cnt; |
| 284 | struct mii_if_info mii; |
| 285 | unsigned int tx_full:1; /* The Tx queue is full. */ |
| 286 | unsigned int default_port:4; /* Last dev->if_port value. */ |
| 287 | }; |
| 288 | |
| 289 | static int epic_open(struct net_device *dev); |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 290 | static int read_eeprom(struct epic_private *, int); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 291 | static int mdio_read(struct net_device *dev, int phy_id, int location); |
| 292 | static void mdio_write(struct net_device *dev, int phy_id, int loc, int val); |
| 293 | static void epic_restart(struct net_device *dev); |
| 294 | static void epic_timer(unsigned long data); |
| 295 | static void epic_tx_timeout(struct net_device *dev); |
| 296 | static void epic_init_ring(struct net_device *dev); |
Stephen Hemminger | 61357325 | 2009-08-31 19:50:58 +0000 | [diff] [blame] | 297 | static netdev_tx_t epic_start_xmit(struct sk_buff *skb, |
| 298 | struct net_device *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 299 | static int epic_rx(struct net_device *dev, int budget); |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 300 | static int epic_poll(struct napi_struct *napi, int budget); |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 301 | static irqreturn_t epic_interrupt(int irq, void *dev_instance); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 302 | static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); |
Jeff Garzik | 7282d49 | 2006-09-13 14:30:00 -0400 | [diff] [blame] | 303 | static const struct ethtool_ops netdev_ethtool_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 304 | static int epic_close(struct net_device *dev); |
| 305 | static struct net_device_stats *epic_get_stats(struct net_device *dev); |
| 306 | static void set_rx_mode(struct net_device *dev); |
| 307 | |
Stephen Hemminger | 805524c | 2009-01-07 17:27:39 -0800 | [diff] [blame] | 308 | static const struct net_device_ops epic_netdev_ops = { |
| 309 | .ndo_open = epic_open, |
| 310 | .ndo_stop = epic_close, |
| 311 | .ndo_start_xmit = epic_start_xmit, |
| 312 | .ndo_tx_timeout = epic_tx_timeout, |
| 313 | .ndo_get_stats = epic_get_stats, |
Jiri Pirko | afc4b13 | 2011-08-16 06:29:01 +0000 | [diff] [blame] | 314 | .ndo_set_rx_mode = set_rx_mode, |
Stephen Hemminger | 805524c | 2009-01-07 17:27:39 -0800 | [diff] [blame] | 315 | .ndo_do_ioctl = netdev_ioctl, |
| 316 | .ndo_change_mtu = eth_change_mtu, |
| 317 | .ndo_set_mac_address = eth_mac_addr, |
| 318 | .ndo_validate_addr = eth_validate_addr, |
| 319 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 320 | |
Greg Kroah-Hartman | 1dd06ae | 2012-12-06 14:30:56 +0000 | [diff] [blame] | 321 | static int epic_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 322 | { |
| 323 | static int card_idx = -1; |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 324 | void __iomem *ioaddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 325 | int chip_idx = (int) ent->driver_data; |
| 326 | int irq; |
| 327 | struct net_device *dev; |
| 328 | struct epic_private *ep; |
| 329 | int i, ret, option = 0, duplex = 0; |
| 330 | void *ring_space; |
| 331 | dma_addr_t ring_dma; |
| 332 | |
| 333 | /* when built into the kernel, we only print version if device is found */ |
| 334 | #ifndef MODULE |
Ben Boeckel | 3ee307d | 2013-11-01 08:53:30 -0400 | [diff] [blame] | 335 | pr_info_once("%s%s\n", version, version2); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 336 | #endif |
Jeff Garzik | f3b197a | 2006-05-26 21:39:03 -0400 | [diff] [blame] | 337 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 338 | card_idx++; |
Jeff Garzik | f3b197a | 2006-05-26 21:39:03 -0400 | [diff] [blame] | 339 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 340 | ret = pci_enable_device(pdev); |
| 341 | if (ret) |
| 342 | goto out; |
| 343 | irq = pdev->irq; |
| 344 | |
Jeff Garzik | 36e1e84 | 2006-06-27 07:38:33 -0400 | [diff] [blame] | 345 | if (pci_resource_len(pdev, 0) < EPIC_TOTAL_SIZE) { |
Jeff Garzik | 9b91cf9 | 2006-06-27 11:39:50 -0400 | [diff] [blame] | 346 | dev_err(&pdev->dev, "no PCI region space\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 347 | ret = -ENODEV; |
| 348 | goto err_out_disable; |
| 349 | } |
Jeff Garzik | f3b197a | 2006-05-26 21:39:03 -0400 | [diff] [blame] | 350 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 351 | pci_set_master(pdev); |
| 352 | |
| 353 | ret = pci_request_regions(pdev, DRV_NAME); |
| 354 | if (ret < 0) |
| 355 | goto err_out_disable; |
| 356 | |
| 357 | ret = -ENOMEM; |
| 358 | |
| 359 | dev = alloc_etherdev(sizeof (*ep)); |
Joe Perches | 41de8d4 | 2012-01-29 13:47:52 +0000 | [diff] [blame] | 360 | if (!dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 361 | goto err_out_free_res; |
Joe Perches | 41de8d4 | 2012-01-29 13:47:52 +0000 | [diff] [blame] | 362 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 363 | SET_NETDEV_DEV(dev, &pdev->dev); |
| 364 | |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 365 | ioaddr = pci_iomap(pdev, EPIC_BAR, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 366 | if (!ioaddr) { |
Jeff Garzik | 9b91cf9 | 2006-06-27 11:39:50 -0400 | [diff] [blame] | 367 | dev_err(&pdev->dev, "ioremap failed\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 368 | goto err_out_free_netdev; |
| 369 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 370 | |
| 371 | pci_set_drvdata(pdev, dev); |
Wang Chen | 4cf1653 | 2008-11-12 23:38:14 -0800 | [diff] [blame] | 372 | ep = netdev_priv(dev); |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 373 | ep->ioaddr = ioaddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 374 | ep->mii.dev = dev; |
| 375 | ep->mii.mdio_read = mdio_read; |
| 376 | ep->mii.mdio_write = mdio_write; |
| 377 | ep->mii.phy_id_mask = 0x1f; |
| 378 | ep->mii.reg_num_mask = 0x1f; |
| 379 | |
| 380 | ring_space = pci_alloc_consistent(pdev, TX_TOTAL_SIZE, &ring_dma); |
| 381 | if (!ring_space) |
| 382 | goto err_out_iounmap; |
Joe Perches | 43d620c | 2011-06-16 19:08:06 +0000 | [diff] [blame] | 383 | ep->tx_ring = ring_space; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 384 | ep->tx_ring_dma = ring_dma; |
| 385 | |
| 386 | ring_space = pci_alloc_consistent(pdev, RX_TOTAL_SIZE, &ring_dma); |
| 387 | if (!ring_space) |
| 388 | goto err_out_unmap_tx; |
Joe Perches | 43d620c | 2011-06-16 19:08:06 +0000 | [diff] [blame] | 389 | ep->rx_ring = ring_space; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 390 | ep->rx_ring_dma = ring_dma; |
| 391 | |
| 392 | if (dev->mem_start) { |
| 393 | option = dev->mem_start; |
| 394 | duplex = (dev->mem_start & 16) ? 1 : 0; |
| 395 | } else if (card_idx >= 0 && card_idx < MAX_UNITS) { |
| 396 | if (options[card_idx] >= 0) |
| 397 | option = options[card_idx]; |
| 398 | if (full_duplex[card_idx] >= 0) |
| 399 | duplex = full_duplex[card_idx]; |
| 400 | } |
| 401 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 402 | spin_lock_init(&ep->lock); |
| 403 | spin_lock_init(&ep->napi_lock); |
| 404 | ep->reschedule_in_poll = 0; |
| 405 | |
| 406 | /* Bring the chip out of low-power mode. */ |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 407 | ew32(GENCTL, 0x4200); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 408 | /* Magic?! If we don't set this bit the MII interface won't work. */ |
| 409 | /* This magic is documented in SMSC app note 7.15 */ |
| 410 | for (i = 16; i > 0; i--) |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 411 | ew32(TEST1, 0x0008); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 412 | |
| 413 | /* Turn on the MII transceiver. */ |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 414 | ew32(MIICfg, 0x12); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 415 | if (chip_idx == 1) |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 416 | ew32(NVCTL, (er32(NVCTL) & ~0x003c) | 0x4800); |
| 417 | ew32(GENCTL, 0x0200); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 418 | |
| 419 | /* Note: the '175 does not have a serial EEPROM. */ |
| 420 | for (i = 0; i < 3; i++) |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 421 | ((__le16 *)dev->dev_addr)[i] = cpu_to_le16(er16(LAN0 + i*4)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 422 | |
| 423 | if (debug > 2) { |
Ben Boeckel | 3ee307d | 2013-11-01 08:53:30 -0400 | [diff] [blame] | 424 | dev_dbg(&pdev->dev, "EEPROM contents:\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 425 | for (i = 0; i < 64; i++) |
Ben Boeckel | 3ee307d | 2013-11-01 08:53:30 -0400 | [diff] [blame] | 426 | pr_cont(" %4.4x%s", read_eeprom(ep, i), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 427 | i % 16 == 15 ? "\n" : ""); |
| 428 | } |
| 429 | |
| 430 | ep->pci_dev = pdev; |
| 431 | ep->chip_id = chip_idx; |
| 432 | ep->chip_flags = pci_id_tbl[chip_idx].drv_flags; |
Jeff Garzik | f3b197a | 2006-05-26 21:39:03 -0400 | [diff] [blame] | 433 | ep->irq_mask = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 434 | (ep->chip_flags & TYPE2_INTR ? PCIBusErr175 : PCIBusErr170) |
| 435 | | CntFull | TxUnderrun | EpicNapiEvent; |
| 436 | |
| 437 | /* Find the connected MII xcvrs. |
| 438 | Doing this in open() would allow detecting external xcvrs later, but |
| 439 | takes much time and no cards have external MII. */ |
| 440 | { |
| 441 | int phy, phy_idx = 0; |
| 442 | for (phy = 1; phy < 32 && phy_idx < sizeof(ep->phys); phy++) { |
| 443 | int mii_status = mdio_read(dev, phy, MII_BMSR); |
| 444 | if (mii_status != 0xffff && mii_status != 0x0000) { |
| 445 | ep->phys[phy_idx++] = phy; |
Jeff Garzik | 9b91cf9 | 2006-06-27 11:39:50 -0400 | [diff] [blame] | 446 | dev_info(&pdev->dev, |
Jeff Garzik | 2e8a538 | 2006-06-27 10:47:51 -0400 | [diff] [blame] | 447 | "MII transceiver #%d control " |
| 448 | "%4.4x status %4.4x.\n", |
| 449 | phy, mdio_read(dev, phy, 0), mii_status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 450 | } |
| 451 | } |
| 452 | ep->mii_phy_cnt = phy_idx; |
| 453 | if (phy_idx != 0) { |
| 454 | phy = ep->phys[0]; |
| 455 | ep->mii.advertising = mdio_read(dev, phy, MII_ADVERTISE); |
Jeff Garzik | 9b91cf9 | 2006-06-27 11:39:50 -0400 | [diff] [blame] | 456 | dev_info(&pdev->dev, |
Jeff Garzik | 2e8a538 | 2006-06-27 10:47:51 -0400 | [diff] [blame] | 457 | "Autonegotiation advertising %4.4x link " |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 458 | "partner %4.4x.\n", |
Jeff Garzik | 2e8a538 | 2006-06-27 10:47:51 -0400 | [diff] [blame] | 459 | ep->mii.advertising, mdio_read(dev, phy, 5)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 460 | } else if ( ! (ep->chip_flags & NO_MII)) { |
Jeff Garzik | 9b91cf9 | 2006-06-27 11:39:50 -0400 | [diff] [blame] | 461 | dev_warn(&pdev->dev, |
Jeff Garzik | 2e8a538 | 2006-06-27 10:47:51 -0400 | [diff] [blame] | 462 | "***WARNING***: No MII transceiver found!\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 463 | /* Use the known PHY address of the EPII. */ |
| 464 | ep->phys[0] = 3; |
| 465 | } |
| 466 | ep->mii.phy_id = ep->phys[0]; |
| 467 | } |
| 468 | |
| 469 | /* Turn off the MII xcvr (175 only!), leave the chip in low-power mode. */ |
| 470 | if (ep->chip_flags & MII_PWRDWN) |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 471 | ew32(NVCTL, er32(NVCTL) & ~0x483c); |
| 472 | ew32(GENCTL, 0x0008); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 473 | |
| 474 | /* The lower four bits are the media type. */ |
| 475 | if (duplex) { |
| 476 | ep->mii.force_media = ep->mii.full_duplex = 1; |
Jeff Garzik | 9b91cf9 | 2006-06-27 11:39:50 -0400 | [diff] [blame] | 477 | dev_info(&pdev->dev, "Forced full duplex requested.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 478 | } |
| 479 | dev->if_port = ep->default_port = option; |
| 480 | |
| 481 | /* The Epic-specific entries in the device structure. */ |
Stephen Hemminger | 805524c | 2009-01-07 17:27:39 -0800 | [diff] [blame] | 482 | dev->netdev_ops = &epic_netdev_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 483 | dev->ethtool_ops = &netdev_ethtool_ops; |
| 484 | dev->watchdog_timeo = TX_TIMEOUT; |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 485 | netif_napi_add(dev, &ep->napi, epic_poll, 64); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 486 | |
| 487 | ret = register_netdev(dev); |
| 488 | if (ret < 0) |
| 489 | goto err_out_unmap_rx; |
| 490 | |
Ben Boeckel | 3ee307d | 2013-11-01 08:53:30 -0400 | [diff] [blame] | 491 | netdev_info(dev, "%s at %lx, IRQ %d, %pM\n", |
| 492 | pci_id_tbl[chip_idx].name, |
| 493 | (long)pci_resource_start(pdev, EPIC_BAR), pdev->irq, |
| 494 | dev->dev_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 495 | |
| 496 | out: |
| 497 | return ret; |
| 498 | |
| 499 | err_out_unmap_rx: |
| 500 | pci_free_consistent(pdev, RX_TOTAL_SIZE, ep->rx_ring, ep->rx_ring_dma); |
| 501 | err_out_unmap_tx: |
| 502 | pci_free_consistent(pdev, TX_TOTAL_SIZE, ep->tx_ring, ep->tx_ring_dma); |
| 503 | err_out_iounmap: |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 504 | pci_iounmap(pdev, ioaddr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 505 | err_out_free_netdev: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 506 | free_netdev(dev); |
| 507 | err_out_free_res: |
| 508 | pci_release_regions(pdev); |
| 509 | err_out_disable: |
| 510 | pci_disable_device(pdev); |
| 511 | goto out; |
| 512 | } |
Jeff Garzik | f3b197a | 2006-05-26 21:39:03 -0400 | [diff] [blame] | 513 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 514 | /* Serial EEPROM section. */ |
| 515 | |
| 516 | /* EEPROM_Ctrl bits. */ |
| 517 | #define EE_SHIFT_CLK 0x04 /* EEPROM shift clock. */ |
| 518 | #define EE_CS 0x02 /* EEPROM chip select. */ |
| 519 | #define EE_DATA_WRITE 0x08 /* EEPROM chip data in. */ |
| 520 | #define EE_WRITE_0 0x01 |
| 521 | #define EE_WRITE_1 0x09 |
| 522 | #define EE_DATA_READ 0x10 /* EEPROM chip data out. */ |
| 523 | #define EE_ENB (0x0001 | EE_CS) |
| 524 | |
| 525 | /* Delay between EEPROM clock transitions. |
| 526 | This serves to flush the operation to the PCI bus. |
| 527 | */ |
| 528 | |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 529 | #define eeprom_delay() er32(EECTL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 530 | |
| 531 | /* The EEPROM commands include the alway-set leading bit. */ |
| 532 | #define EE_WRITE_CMD (5 << 6) |
| 533 | #define EE_READ64_CMD (6 << 6) |
| 534 | #define EE_READ256_CMD (6 << 8) |
| 535 | #define EE_ERASE_CMD (7 << 6) |
| 536 | |
| 537 | static void epic_disable_int(struct net_device *dev, struct epic_private *ep) |
| 538 | { |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 539 | void __iomem *ioaddr = ep->ioaddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 540 | |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 541 | ew32(INTMASK, 0x00000000); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 542 | } |
| 543 | |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 544 | static inline void __epic_pci_commit(void __iomem *ioaddr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 545 | { |
| 546 | #ifndef USE_IO_OPS |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 547 | er32(INTMASK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 548 | #endif |
| 549 | } |
| 550 | |
| 551 | static inline void epic_napi_irq_off(struct net_device *dev, |
| 552 | struct epic_private *ep) |
| 553 | { |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 554 | void __iomem *ioaddr = ep->ioaddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 555 | |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 556 | ew32(INTMASK, ep->irq_mask & ~EpicNapiEvent); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 557 | __epic_pci_commit(ioaddr); |
| 558 | } |
| 559 | |
| 560 | static inline void epic_napi_irq_on(struct net_device *dev, |
| 561 | struct epic_private *ep) |
| 562 | { |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 563 | void __iomem *ioaddr = ep->ioaddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 564 | |
| 565 | /* No need to commit possible posted write */ |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 566 | ew32(INTMASK, ep->irq_mask | EpicNapiEvent); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 567 | } |
| 568 | |
Bill Pemberton | b0171cd | 2012-12-03 09:23:42 -0500 | [diff] [blame] | 569 | static int read_eeprom(struct epic_private *ep, int location) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 570 | { |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 571 | void __iomem *ioaddr = ep->ioaddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 572 | int i; |
| 573 | int retval = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 574 | int read_cmd = location | |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 575 | (er32(EECTL) & 0x40 ? EE_READ64_CMD : EE_READ256_CMD); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 576 | |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 577 | ew32(EECTL, EE_ENB & ~EE_CS); |
| 578 | ew32(EECTL, EE_ENB); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 579 | |
| 580 | /* Shift the read command bits out. */ |
| 581 | for (i = 12; i >= 0; i--) { |
| 582 | short dataval = (read_cmd & (1 << i)) ? EE_WRITE_1 : EE_WRITE_0; |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 583 | ew32(EECTL, EE_ENB | dataval); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 584 | eeprom_delay(); |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 585 | ew32(EECTL, EE_ENB | dataval | EE_SHIFT_CLK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 586 | eeprom_delay(); |
| 587 | } |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 588 | ew32(EECTL, EE_ENB); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 589 | |
| 590 | for (i = 16; i > 0; i--) { |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 591 | ew32(EECTL, EE_ENB | EE_SHIFT_CLK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 592 | eeprom_delay(); |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 593 | retval = (retval << 1) | ((er32(EECTL) & EE_DATA_READ) ? 1 : 0); |
| 594 | ew32(EECTL, EE_ENB); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 595 | eeprom_delay(); |
| 596 | } |
| 597 | |
| 598 | /* Terminate the EEPROM access. */ |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 599 | ew32(EECTL, EE_ENB & ~EE_CS); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 600 | return retval; |
| 601 | } |
| 602 | |
| 603 | #define MII_READOP 1 |
| 604 | #define MII_WRITEOP 2 |
| 605 | static int mdio_read(struct net_device *dev, int phy_id, int location) |
| 606 | { |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 607 | struct epic_private *ep = netdev_priv(dev); |
| 608 | void __iomem *ioaddr = ep->ioaddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 609 | int read_cmd = (phy_id << 9) | (location << 4) | MII_READOP; |
| 610 | int i; |
| 611 | |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 612 | ew32(MIICtrl, read_cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 613 | /* Typical operation takes 25 loops. */ |
| 614 | for (i = 400; i > 0; i--) { |
| 615 | barrier(); |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 616 | if ((er32(MIICtrl) & MII_READOP) == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 617 | /* Work around read failure bug. */ |
Joe Perches | 8e95a20 | 2009-12-03 07:58:21 +0000 | [diff] [blame] | 618 | if (phy_id == 1 && location < 6 && |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 619 | er16(MIIData) == 0xffff) { |
| 620 | ew32(MIICtrl, read_cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 621 | continue; |
| 622 | } |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 623 | return er16(MIIData); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 624 | } |
| 625 | } |
| 626 | return 0xffff; |
| 627 | } |
| 628 | |
| 629 | static void mdio_write(struct net_device *dev, int phy_id, int loc, int value) |
| 630 | { |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 631 | struct epic_private *ep = netdev_priv(dev); |
| 632 | void __iomem *ioaddr = ep->ioaddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 633 | int i; |
| 634 | |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 635 | ew16(MIIData, value); |
| 636 | ew32(MIICtrl, (phy_id << 9) | (loc << 4) | MII_WRITEOP); |
Jeff Garzik | f3b197a | 2006-05-26 21:39:03 -0400 | [diff] [blame] | 637 | for (i = 10000; i > 0; i--) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 638 | barrier(); |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 639 | if ((er32(MIICtrl) & MII_WRITEOP) == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 640 | break; |
| 641 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 642 | } |
| 643 | |
Jeff Garzik | f3b197a | 2006-05-26 21:39:03 -0400 | [diff] [blame] | 644 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 645 | static int epic_open(struct net_device *dev) |
| 646 | { |
Wang Chen | 4cf1653 | 2008-11-12 23:38:14 -0800 | [diff] [blame] | 647 | struct epic_private *ep = netdev_priv(dev); |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 648 | void __iomem *ioaddr = ep->ioaddr; |
| 649 | const int irq = ep->pci_dev->irq; |
| 650 | int rc, i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 651 | |
| 652 | /* Soft reset the chip. */ |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 653 | ew32(GENCTL, 0x4001); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 654 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 655 | napi_enable(&ep->napi); |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 656 | rc = request_irq(irq, epic_interrupt, IRQF_SHARED, dev->name, dev); |
| 657 | if (rc) { |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 658 | napi_disable(&ep->napi); |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 659 | return rc; |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 660 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 661 | |
| 662 | epic_init_ring(dev); |
| 663 | |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 664 | ew32(GENCTL, 0x4000); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 665 | /* This magic is documented in SMSC app note 7.15 */ |
| 666 | for (i = 16; i > 0; i--) |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 667 | ew32(TEST1, 0x0008); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 668 | |
| 669 | /* Pull the chip out of low-power mode, enable interrupts, and set for |
| 670 | PCI read multiple. The MIIcfg setting and strange write order are |
| 671 | required by the details of which bits are reset and the transceiver |
| 672 | wiring on the Ositech CardBus card. |
| 673 | */ |
| 674 | #if 0 |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 675 | ew32(MIICfg, dev->if_port == 1 ? 0x13 : 0x12); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 676 | #endif |
| 677 | if (ep->chip_flags & MII_PWRDWN) |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 678 | ew32(NVCTL, (er32(NVCTL) & ~0x003c) | 0x4800); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 679 | |
Al Viro | 9ebfd49 | 2008-03-16 22:22:04 +0000 | [diff] [blame] | 680 | /* Tell the chip to byteswap descriptors on big-endian hosts */ |
Roland Dreier | 9e2d11b | 2010-06-02 10:36:53 +0000 | [diff] [blame] | 681 | #ifdef __BIG_ENDIAN |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 682 | ew32(GENCTL, 0x4432 | (RX_FIFO_THRESH << 8)); |
| 683 | er32(GENCTL); |
| 684 | ew32(GENCTL, 0x0432 | (RX_FIFO_THRESH << 8)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 685 | #else |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 686 | ew32(GENCTL, 0x4412 | (RX_FIFO_THRESH << 8)); |
| 687 | er32(GENCTL); |
| 688 | ew32(GENCTL, 0x0412 | (RX_FIFO_THRESH << 8)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 689 | #endif |
| 690 | |
| 691 | udelay(20); /* Looks like EPII needs that if you want reliable RX init. FIXME: pci posting bug? */ |
Jeff Garzik | f3b197a | 2006-05-26 21:39:03 -0400 | [diff] [blame] | 692 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 693 | for (i = 0; i < 3; i++) |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 694 | ew32(LAN0 + i*4, le16_to_cpu(((__le16*)dev->dev_addr)[i])); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 695 | |
| 696 | ep->tx_threshold = TX_FIFO_THRESH; |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 697 | ew32(TxThresh, ep->tx_threshold); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 698 | |
| 699 | if (media2miictl[dev->if_port & 15]) { |
| 700 | if (ep->mii_phy_cnt) |
| 701 | mdio_write(dev, ep->phys[0], MII_BMCR, media2miictl[dev->if_port&15]); |
| 702 | if (dev->if_port == 1) { |
| 703 | if (debug > 1) |
Ben Boeckel | 3ee307d | 2013-11-01 08:53:30 -0400 | [diff] [blame] | 704 | netdev_info(dev, "Using the 10base2 transceiver, MII status %4.4x.\n", |
| 705 | mdio_read(dev, ep->phys[0], MII_BMSR)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 706 | } |
| 707 | } else { |
| 708 | int mii_lpa = mdio_read(dev, ep->phys[0], MII_LPA); |
| 709 | if (mii_lpa != 0xffff) { |
| 710 | if ((mii_lpa & LPA_100FULL) || (mii_lpa & 0x01C0) == LPA_10FULL) |
| 711 | ep->mii.full_duplex = 1; |
| 712 | else if (! (mii_lpa & LPA_LPACK)) |
| 713 | mdio_write(dev, ep->phys[0], MII_BMCR, BMCR_ANENABLE|BMCR_ANRESTART); |
| 714 | if (debug > 1) |
Ben Boeckel | 3ee307d | 2013-11-01 08:53:30 -0400 | [diff] [blame] | 715 | netdev_info(dev, "Setting %s-duplex based on MII xcvr %d register read of %4.4x.\n", |
| 716 | ep->mii.full_duplex ? "full" |
| 717 | : "half", |
| 718 | ep->phys[0], mii_lpa); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 719 | } |
| 720 | } |
| 721 | |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 722 | ew32(TxCtrl, ep->mii.full_duplex ? 0x7f : 0x79); |
| 723 | ew32(PRxCDAR, ep->rx_ring_dma); |
| 724 | ew32(PTxCDAR, ep->tx_ring_dma); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 725 | |
| 726 | /* Start the chip's Rx process. */ |
| 727 | set_rx_mode(dev); |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 728 | ew32(COMMAND, StartRx | RxQueued); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 729 | |
| 730 | netif_start_queue(dev); |
| 731 | |
| 732 | /* Enable interrupts by setting the interrupt mask. */ |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 733 | ew32(INTMASK, RxError | RxHeader | EpicNapiEvent | CntFull | |
| 734 | ((ep->chip_flags & TYPE2_INTR) ? PCIBusErr175 : PCIBusErr170) | |
| 735 | TxUnderrun); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 736 | |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 737 | if (debug > 1) { |
Ben Boeckel | 3ee307d | 2013-11-01 08:53:30 -0400 | [diff] [blame] | 738 | netdev_dbg(dev, "epic_open() ioaddr %p IRQ %d status %4.4x %s-duplex.\n", |
| 739 | ioaddr, irq, er32(GENCTL), |
| 740 | ep->mii.full_duplex ? "full" : "half"); |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 741 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 742 | |
| 743 | /* Set the timer to switch to check for link beat and perhaps switch |
| 744 | to an alternate media type. */ |
| 745 | init_timer(&ep->timer); |
| 746 | ep->timer.expires = jiffies + 3*HZ; |
| 747 | ep->timer.data = (unsigned long)dev; |
Joe Perches | c061b18 | 2010-08-23 18:20:03 +0000 | [diff] [blame] | 748 | ep->timer.function = epic_timer; /* timer handler */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 749 | add_timer(&ep->timer); |
| 750 | |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 751 | return rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 752 | } |
| 753 | |
| 754 | /* Reset the chip to recover from a PCI transaction error. |
| 755 | This may occur at interrupt time. */ |
| 756 | static void epic_pause(struct net_device *dev) |
| 757 | { |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 758 | struct net_device_stats *stats = &dev->stats; |
| 759 | struct epic_private *ep = netdev_priv(dev); |
| 760 | void __iomem *ioaddr = ep->ioaddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 761 | |
| 762 | netif_stop_queue (dev); |
Jeff Garzik | f3b197a | 2006-05-26 21:39:03 -0400 | [diff] [blame] | 763 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 764 | /* Disable interrupts by clearing the interrupt mask. */ |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 765 | ew32(INTMASK, 0x00000000); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 766 | /* Stop the chip's Tx and Rx DMA processes. */ |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 767 | ew16(COMMAND, StopRx | StopTxDMA | StopRxDMA); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 768 | |
| 769 | /* Update the error counts. */ |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 770 | if (er16(COMMAND) != 0xffff) { |
| 771 | stats->rx_missed_errors += er8(MPCNT); |
| 772 | stats->rx_frame_errors += er8(ALICNT); |
| 773 | stats->rx_crc_errors += er8(CRCCNT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 774 | } |
| 775 | |
| 776 | /* Remove the packets on the Rx queue. */ |
| 777 | epic_rx(dev, RX_RING_SIZE); |
| 778 | } |
| 779 | |
| 780 | static void epic_restart(struct net_device *dev) |
| 781 | { |
Wang Chen | 4cf1653 | 2008-11-12 23:38:14 -0800 | [diff] [blame] | 782 | struct epic_private *ep = netdev_priv(dev); |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 783 | void __iomem *ioaddr = ep->ioaddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 784 | int i; |
| 785 | |
| 786 | /* Soft reset the chip. */ |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 787 | ew32(GENCTL, 0x4001); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 788 | |
Ben Boeckel | 3ee307d | 2013-11-01 08:53:30 -0400 | [diff] [blame] | 789 | netdev_dbg(dev, "Restarting the EPIC chip, Rx %d/%d Tx %d/%d.\n", |
| 790 | ep->cur_rx, ep->dirty_rx, ep->dirty_tx, ep->cur_tx); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 791 | udelay(1); |
| 792 | |
| 793 | /* This magic is documented in SMSC app note 7.15 */ |
| 794 | for (i = 16; i > 0; i--) |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 795 | ew32(TEST1, 0x0008); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 796 | |
Roland Dreier | 9e2d11b | 2010-06-02 10:36:53 +0000 | [diff] [blame] | 797 | #ifdef __BIG_ENDIAN |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 798 | ew32(GENCTL, 0x0432 | (RX_FIFO_THRESH << 8)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 799 | #else |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 800 | ew32(GENCTL, 0x0412 | (RX_FIFO_THRESH << 8)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 801 | #endif |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 802 | ew32(MIICfg, dev->if_port == 1 ? 0x13 : 0x12); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 803 | if (ep->chip_flags & MII_PWRDWN) |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 804 | ew32(NVCTL, (er32(NVCTL) & ~0x003c) | 0x4800); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 805 | |
| 806 | for (i = 0; i < 3; i++) |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 807 | ew32(LAN0 + i*4, le16_to_cpu(((__le16*)dev->dev_addr)[i])); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 808 | |
| 809 | ep->tx_threshold = TX_FIFO_THRESH; |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 810 | ew32(TxThresh, ep->tx_threshold); |
| 811 | ew32(TxCtrl, ep->mii.full_duplex ? 0x7f : 0x79); |
| 812 | ew32(PRxCDAR, ep->rx_ring_dma + |
| 813 | (ep->cur_rx % RX_RING_SIZE) * sizeof(struct epic_rx_desc)); |
| 814 | ew32(PTxCDAR, ep->tx_ring_dma + |
| 815 | (ep->dirty_tx % TX_RING_SIZE) * sizeof(struct epic_tx_desc)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 816 | |
| 817 | /* Start the chip's Rx process. */ |
| 818 | set_rx_mode(dev); |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 819 | ew32(COMMAND, StartRx | RxQueued); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 820 | |
| 821 | /* Enable interrupts by setting the interrupt mask. */ |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 822 | ew32(INTMASK, RxError | RxHeader | EpicNapiEvent | CntFull | |
| 823 | ((ep->chip_flags & TYPE2_INTR) ? PCIBusErr175 : PCIBusErr170) | |
| 824 | TxUnderrun); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 825 | |
Ben Boeckel | 3ee307d | 2013-11-01 08:53:30 -0400 | [diff] [blame] | 826 | netdev_dbg(dev, "epic_restart() done, cmd status %4.4x, ctl %4.4x interrupt %4.4x.\n", |
| 827 | er32(COMMAND), er32(GENCTL), er32(INTSTAT)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 828 | } |
| 829 | |
| 830 | static void check_media(struct net_device *dev) |
| 831 | { |
Wang Chen | 4cf1653 | 2008-11-12 23:38:14 -0800 | [diff] [blame] | 832 | struct epic_private *ep = netdev_priv(dev); |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 833 | void __iomem *ioaddr = ep->ioaddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 834 | int mii_lpa = ep->mii_phy_cnt ? mdio_read(dev, ep->phys[0], MII_LPA) : 0; |
| 835 | int negotiated = mii_lpa & ep->mii.advertising; |
| 836 | int duplex = (negotiated & 0x0100) || (negotiated & 0x01C0) == 0x0040; |
| 837 | |
| 838 | if (ep->mii.force_media) |
| 839 | return; |
| 840 | if (mii_lpa == 0xffff) /* Bogus read */ |
| 841 | return; |
| 842 | if (ep->mii.full_duplex != duplex) { |
| 843 | ep->mii.full_duplex = duplex; |
Ben Boeckel | 3ee307d | 2013-11-01 08:53:30 -0400 | [diff] [blame] | 844 | netdev_info(dev, "Setting %s-duplex based on MII #%d link partner capability of %4.4x.\n", |
| 845 | ep->mii.full_duplex ? "full" : "half", |
| 846 | ep->phys[0], mii_lpa); |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 847 | ew32(TxCtrl, ep->mii.full_duplex ? 0x7F : 0x79); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 848 | } |
| 849 | } |
| 850 | |
| 851 | static void epic_timer(unsigned long data) |
| 852 | { |
| 853 | struct net_device *dev = (struct net_device *)data; |
Wang Chen | 4cf1653 | 2008-11-12 23:38:14 -0800 | [diff] [blame] | 854 | struct epic_private *ep = netdev_priv(dev); |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 855 | void __iomem *ioaddr = ep->ioaddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 856 | int next_tick = 5*HZ; |
| 857 | |
| 858 | if (debug > 3) { |
Ben Boeckel | 3ee307d | 2013-11-01 08:53:30 -0400 | [diff] [blame] | 859 | netdev_dbg(dev, "Media monitor tick, Tx status %8.8x.\n", |
| 860 | er32(TxSTAT)); |
| 861 | netdev_dbg(dev, "Other registers are IntMask %4.4x IntStatus %4.4x RxStatus %4.4x.\n", |
| 862 | er32(INTMASK), er32(INTSTAT), er32(RxSTAT)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 863 | } |
| 864 | |
| 865 | check_media(dev); |
| 866 | |
| 867 | ep->timer.expires = jiffies + next_tick; |
| 868 | add_timer(&ep->timer); |
| 869 | } |
| 870 | |
| 871 | static void epic_tx_timeout(struct net_device *dev) |
| 872 | { |
Wang Chen | 4cf1653 | 2008-11-12 23:38:14 -0800 | [diff] [blame] | 873 | struct epic_private *ep = netdev_priv(dev); |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 874 | void __iomem *ioaddr = ep->ioaddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 875 | |
| 876 | if (debug > 0) { |
Ben Boeckel | 3ee307d | 2013-11-01 08:53:30 -0400 | [diff] [blame] | 877 | netdev_warn(dev, "Transmit timeout using MII device, Tx status %4.4x.\n", |
| 878 | er16(TxSTAT)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 879 | if (debug > 1) { |
Ben Boeckel | 3ee307d | 2013-11-01 08:53:30 -0400 | [diff] [blame] | 880 | netdev_dbg(dev, "Tx indices: dirty_tx %d, cur_tx %d.\n", |
| 881 | ep->dirty_tx, ep->cur_tx); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 882 | } |
| 883 | } |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 884 | if (er16(TxSTAT) & 0x10) { /* Tx FIFO underflow. */ |
Kulikov Vasiliy | 275defc | 2010-07-05 02:13:20 +0000 | [diff] [blame] | 885 | dev->stats.tx_fifo_errors++; |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 886 | ew32(COMMAND, RestartTx); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 887 | } else { |
| 888 | epic_restart(dev); |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 889 | ew32(COMMAND, TxQueued); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 890 | } |
| 891 | |
Eric Dumazet | 1ae5dc3 | 2010-05-10 05:01:31 -0700 | [diff] [blame] | 892 | dev->trans_start = jiffies; /* prevent tx timeout */ |
Kulikov Vasiliy | 275defc | 2010-07-05 02:13:20 +0000 | [diff] [blame] | 893 | dev->stats.tx_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 894 | if (!ep->tx_full) |
| 895 | netif_wake_queue(dev); |
| 896 | } |
| 897 | |
| 898 | /* Initialize the Rx and Tx rings, along with various 'dev' bits. */ |
| 899 | static void epic_init_ring(struct net_device *dev) |
| 900 | { |
Wang Chen | 4cf1653 | 2008-11-12 23:38:14 -0800 | [diff] [blame] | 901 | struct epic_private *ep = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 902 | int i; |
| 903 | |
| 904 | ep->tx_full = 0; |
| 905 | ep->dirty_tx = ep->cur_tx = 0; |
| 906 | ep->cur_rx = ep->dirty_rx = 0; |
| 907 | ep->rx_buf_sz = (dev->mtu <= 1500 ? PKT_BUF_SZ : dev->mtu + 32); |
| 908 | |
| 909 | /* Initialize all Rx descriptors. */ |
| 910 | for (i = 0; i < RX_RING_SIZE; i++) { |
| 911 | ep->rx_ring[i].rxstatus = 0; |
Al Viro | 9ebfd49 | 2008-03-16 22:22:04 +0000 | [diff] [blame] | 912 | ep->rx_ring[i].buflength = ep->rx_buf_sz; |
Jeff Garzik | f3b197a | 2006-05-26 21:39:03 -0400 | [diff] [blame] | 913 | ep->rx_ring[i].next = ep->rx_ring_dma + |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 914 | (i+1)*sizeof(struct epic_rx_desc); |
| 915 | ep->rx_skbuff[i] = NULL; |
| 916 | } |
| 917 | /* Mark the last entry as wrapping the ring. */ |
| 918 | ep->rx_ring[i-1].next = ep->rx_ring_dma; |
| 919 | |
| 920 | /* Fill in the Rx buffers. Handle allocation failure gracefully. */ |
| 921 | for (i = 0; i < RX_RING_SIZE; i++) { |
Pradeep A. Dalvi | dae2e9f | 2012-02-06 11:16:13 +0000 | [diff] [blame] | 922 | struct sk_buff *skb = netdev_alloc_skb(dev, ep->rx_buf_sz + 2); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 923 | ep->rx_skbuff[i] = skb; |
| 924 | if (skb == NULL) |
| 925 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 926 | skb_reserve(skb, 2); /* 16 byte align the IP header. */ |
Jeff Garzik | f3b197a | 2006-05-26 21:39:03 -0400 | [diff] [blame] | 927 | ep->rx_ring[i].bufaddr = pci_map_single(ep->pci_dev, |
David S. Miller | 689be43 | 2005-06-28 15:25:31 -0700 | [diff] [blame] | 928 | skb->data, ep->rx_buf_sz, PCI_DMA_FROMDEVICE); |
Al Viro | 9ebfd49 | 2008-03-16 22:22:04 +0000 | [diff] [blame] | 929 | ep->rx_ring[i].rxstatus = DescOwn; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 930 | } |
| 931 | ep->dirty_rx = (unsigned int)(i - RX_RING_SIZE); |
| 932 | |
| 933 | /* The Tx buffer descriptor is filled in as needed, but we |
| 934 | do need to clear the ownership bit. */ |
| 935 | for (i = 0; i < TX_RING_SIZE; i++) { |
| 936 | ep->tx_skbuff[i] = NULL; |
| 937 | ep->tx_ring[i].txstatus = 0x0000; |
Jeff Garzik | f3b197a | 2006-05-26 21:39:03 -0400 | [diff] [blame] | 938 | ep->tx_ring[i].next = ep->tx_ring_dma + |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 939 | (i+1)*sizeof(struct epic_tx_desc); |
| 940 | } |
| 941 | ep->tx_ring[i-1].next = ep->tx_ring_dma; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 942 | } |
| 943 | |
Stephen Hemminger | 61357325 | 2009-08-31 19:50:58 +0000 | [diff] [blame] | 944 | static netdev_tx_t epic_start_xmit(struct sk_buff *skb, struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 945 | { |
Wang Chen | 4cf1653 | 2008-11-12 23:38:14 -0800 | [diff] [blame] | 946 | struct epic_private *ep = netdev_priv(dev); |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 947 | void __iomem *ioaddr = ep->ioaddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 948 | int entry, free_count; |
| 949 | u32 ctrl_word; |
| 950 | unsigned long flags; |
Jeff Garzik | f3b197a | 2006-05-26 21:39:03 -0400 | [diff] [blame] | 951 | |
Herbert Xu | 5b057c6 | 2006-06-23 02:06:41 -0700 | [diff] [blame] | 952 | if (skb_padto(skb, ETH_ZLEN)) |
Patrick McHardy | 6ed1065 | 2009-06-23 06:03:08 +0000 | [diff] [blame] | 953 | return NETDEV_TX_OK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 954 | |
| 955 | /* Caution: the write order is important here, set the field with the |
| 956 | "ownership" bit last. */ |
| 957 | |
| 958 | /* Calculate the next Tx descriptor entry. */ |
| 959 | spin_lock_irqsave(&ep->lock, flags); |
| 960 | free_count = ep->cur_tx - ep->dirty_tx; |
| 961 | entry = ep->cur_tx % TX_RING_SIZE; |
| 962 | |
| 963 | ep->tx_skbuff[entry] = skb; |
Jeff Garzik | f3b197a | 2006-05-26 21:39:03 -0400 | [diff] [blame] | 964 | ep->tx_ring[entry].bufaddr = pci_map_single(ep->pci_dev, skb->data, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 965 | skb->len, PCI_DMA_TODEVICE); |
| 966 | if (free_count < TX_QUEUE_LEN/2) {/* Typical path */ |
Al Viro | 9ebfd49 | 2008-03-16 22:22:04 +0000 | [diff] [blame] | 967 | ctrl_word = 0x100000; /* No interrupt */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 968 | } else if (free_count == TX_QUEUE_LEN/2) { |
Al Viro | 9ebfd49 | 2008-03-16 22:22:04 +0000 | [diff] [blame] | 969 | ctrl_word = 0x140000; /* Tx-done intr. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 970 | } else if (free_count < TX_QUEUE_LEN - 1) { |
Al Viro | 9ebfd49 | 2008-03-16 22:22:04 +0000 | [diff] [blame] | 971 | ctrl_word = 0x100000; /* No Tx-done intr. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 972 | } else { |
| 973 | /* Leave room for an additional entry. */ |
Al Viro | 9ebfd49 | 2008-03-16 22:22:04 +0000 | [diff] [blame] | 974 | ctrl_word = 0x140000; /* Tx-done intr. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 975 | ep->tx_full = 1; |
| 976 | } |
Al Viro | 9ebfd49 | 2008-03-16 22:22:04 +0000 | [diff] [blame] | 977 | ep->tx_ring[entry].buflength = ctrl_word | skb->len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 978 | ep->tx_ring[entry].txstatus = |
| 979 | ((skb->len >= ETH_ZLEN ? skb->len : ETH_ZLEN) << 16) |
Al Viro | 9ebfd49 | 2008-03-16 22:22:04 +0000 | [diff] [blame] | 980 | | DescOwn; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 981 | |
| 982 | ep->cur_tx++; |
| 983 | if (ep->tx_full) |
| 984 | netif_stop_queue(dev); |
| 985 | |
| 986 | spin_unlock_irqrestore(&ep->lock, flags); |
| 987 | /* Trigger an immediate transmit demand. */ |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 988 | ew32(COMMAND, TxQueued); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 989 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 990 | if (debug > 4) |
Ben Boeckel | 3ee307d | 2013-11-01 08:53:30 -0400 | [diff] [blame] | 991 | netdev_dbg(dev, "Queued Tx packet size %d to slot %d, flag %2.2x Tx status %8.8x.\n", |
| 992 | skb->len, entry, ctrl_word, er32(TxSTAT)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 993 | |
Patrick McHardy | 6ed1065 | 2009-06-23 06:03:08 +0000 | [diff] [blame] | 994 | return NETDEV_TX_OK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 995 | } |
| 996 | |
| 997 | static void epic_tx_error(struct net_device *dev, struct epic_private *ep, |
| 998 | int status) |
| 999 | { |
Kulikov Vasiliy | 275defc | 2010-07-05 02:13:20 +0000 | [diff] [blame] | 1000 | struct net_device_stats *stats = &dev->stats; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1001 | |
| 1002 | #ifndef final_version |
| 1003 | /* There was an major error, log it. */ |
| 1004 | if (debug > 1) |
Ben Boeckel | 3ee307d | 2013-11-01 08:53:30 -0400 | [diff] [blame] | 1005 | netdev_dbg(dev, "Transmit error, Tx status %8.8x.\n", |
| 1006 | status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1007 | #endif |
| 1008 | stats->tx_errors++; |
| 1009 | if (status & 0x1050) |
| 1010 | stats->tx_aborted_errors++; |
| 1011 | if (status & 0x0008) |
| 1012 | stats->tx_carrier_errors++; |
| 1013 | if (status & 0x0040) |
| 1014 | stats->tx_window_errors++; |
| 1015 | if (status & 0x0010) |
| 1016 | stats->tx_fifo_errors++; |
| 1017 | } |
| 1018 | |
| 1019 | static void epic_tx(struct net_device *dev, struct epic_private *ep) |
| 1020 | { |
| 1021 | unsigned int dirty_tx, cur_tx; |
| 1022 | |
| 1023 | /* |
| 1024 | * Note: if this lock becomes a problem we can narrow the locked |
| 1025 | * region at the cost of occasionally grabbing the lock more times. |
| 1026 | */ |
| 1027 | cur_tx = ep->cur_tx; |
| 1028 | for (dirty_tx = ep->dirty_tx; cur_tx - dirty_tx > 0; dirty_tx++) { |
| 1029 | struct sk_buff *skb; |
| 1030 | int entry = dirty_tx % TX_RING_SIZE; |
Al Viro | 9ebfd49 | 2008-03-16 22:22:04 +0000 | [diff] [blame] | 1031 | int txstatus = ep->tx_ring[entry].txstatus; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1032 | |
| 1033 | if (txstatus & DescOwn) |
| 1034 | break; /* It still hasn't been Txed */ |
| 1035 | |
| 1036 | if (likely(txstatus & 0x0001)) { |
Kulikov Vasiliy | 275defc | 2010-07-05 02:13:20 +0000 | [diff] [blame] | 1037 | dev->stats.collisions += (txstatus >> 8) & 15; |
| 1038 | dev->stats.tx_packets++; |
| 1039 | dev->stats.tx_bytes += ep->tx_skbuff[entry]->len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1040 | } else |
| 1041 | epic_tx_error(dev, ep, txstatus); |
| 1042 | |
| 1043 | /* Free the original skb. */ |
| 1044 | skb = ep->tx_skbuff[entry]; |
Jeff Garzik | f3b197a | 2006-05-26 21:39:03 -0400 | [diff] [blame] | 1045 | pci_unmap_single(ep->pci_dev, ep->tx_ring[entry].bufaddr, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1046 | skb->len, PCI_DMA_TODEVICE); |
| 1047 | dev_kfree_skb_irq(skb); |
| 1048 | ep->tx_skbuff[entry] = NULL; |
| 1049 | } |
| 1050 | |
| 1051 | #ifndef final_version |
| 1052 | if (cur_tx - dirty_tx > TX_RING_SIZE) { |
Ben Boeckel | 3ee307d | 2013-11-01 08:53:30 -0400 | [diff] [blame] | 1053 | netdev_warn(dev, "Out-of-sync dirty pointer, %d vs. %d, full=%d.\n", |
| 1054 | dirty_tx, cur_tx, ep->tx_full); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1055 | dirty_tx += TX_RING_SIZE; |
| 1056 | } |
| 1057 | #endif |
| 1058 | ep->dirty_tx = dirty_tx; |
| 1059 | if (ep->tx_full && cur_tx - dirty_tx < TX_QUEUE_LEN - 4) { |
| 1060 | /* The ring is no longer full, allow new TX entries. */ |
| 1061 | ep->tx_full = 0; |
| 1062 | netif_wake_queue(dev); |
| 1063 | } |
| 1064 | } |
| 1065 | |
| 1066 | /* The interrupt handler does all of the Rx thread work and cleans up |
| 1067 | after the Tx thread. */ |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 1068 | static irqreturn_t epic_interrupt(int irq, void *dev_instance) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1069 | { |
| 1070 | struct net_device *dev = dev_instance; |
Wang Chen | 4cf1653 | 2008-11-12 23:38:14 -0800 | [diff] [blame] | 1071 | struct epic_private *ep = netdev_priv(dev); |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 1072 | void __iomem *ioaddr = ep->ioaddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1073 | unsigned int handled = 0; |
| 1074 | int status; |
| 1075 | |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 1076 | status = er32(INTSTAT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1077 | /* Acknowledge all of the current interrupt sources ASAP. */ |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 1078 | ew32(INTSTAT, status & EpicNormalEvent); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1079 | |
| 1080 | if (debug > 4) { |
Ben Boeckel | 3ee307d | 2013-11-01 08:53:30 -0400 | [diff] [blame] | 1081 | netdev_dbg(dev, "Interrupt, status=%#8.8x new intstat=%#8.8x.\n", |
| 1082 | status, er32(INTSTAT)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1083 | } |
| 1084 | |
| 1085 | if ((status & IntrSummary) == 0) |
| 1086 | goto out; |
| 1087 | |
| 1088 | handled = 1; |
| 1089 | |
| 1090 | if ((status & EpicNapiEvent) && !ep->reschedule_in_poll) { |
| 1091 | spin_lock(&ep->napi_lock); |
Ben Hutchings | 288379f | 2009-01-19 16:43:59 -0800 | [diff] [blame] | 1092 | if (napi_schedule_prep(&ep->napi)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1093 | epic_napi_irq_off(dev, ep); |
Ben Hutchings | 288379f | 2009-01-19 16:43:59 -0800 | [diff] [blame] | 1094 | __napi_schedule(&ep->napi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1095 | } else |
| 1096 | ep->reschedule_in_poll++; |
| 1097 | spin_unlock(&ep->napi_lock); |
| 1098 | } |
| 1099 | status &= ~EpicNapiEvent; |
| 1100 | |
| 1101 | /* Check uncommon events all at once. */ |
| 1102 | if (status & (CntFull | TxUnderrun | PCIBusErr170 | PCIBusErr175)) { |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 1103 | struct net_device_stats *stats = &dev->stats; |
| 1104 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1105 | if (status == EpicRemoved) |
| 1106 | goto out; |
| 1107 | |
| 1108 | /* Always update the error counts to avoid overhead later. */ |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 1109 | stats->rx_missed_errors += er8(MPCNT); |
| 1110 | stats->rx_frame_errors += er8(ALICNT); |
| 1111 | stats->rx_crc_errors += er8(CRCCNT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1112 | |
| 1113 | if (status & TxUnderrun) { /* Tx FIFO underflow. */ |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 1114 | stats->tx_fifo_errors++; |
| 1115 | ew32(TxThresh, ep->tx_threshold += 128); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1116 | /* Restart the transmit process. */ |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 1117 | ew32(COMMAND, RestartTx); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1118 | } |
| 1119 | if (status & PCIBusErr170) { |
Ben Boeckel | 3ee307d | 2013-11-01 08:53:30 -0400 | [diff] [blame] | 1120 | netdev_err(dev, "PCI Bus Error! status %4.4x.\n", |
| 1121 | status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1122 | epic_pause(dev); |
| 1123 | epic_restart(dev); |
| 1124 | } |
| 1125 | /* Clear all error sources. */ |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 1126 | ew32(INTSTAT, status & 0x7f18); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1127 | } |
| 1128 | |
| 1129 | out: |
| 1130 | if (debug > 3) { |
Ben Boeckel | 3ee307d | 2013-11-01 08:53:30 -0400 | [diff] [blame] | 1131 | netdev_dbg(dev, "exit interrupt, intr_status=%#4.4x.\n", |
| 1132 | status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1133 | } |
| 1134 | |
| 1135 | return IRQ_RETVAL(handled); |
| 1136 | } |
| 1137 | |
| 1138 | static int epic_rx(struct net_device *dev, int budget) |
| 1139 | { |
Wang Chen | 4cf1653 | 2008-11-12 23:38:14 -0800 | [diff] [blame] | 1140 | struct epic_private *ep = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1141 | int entry = ep->cur_rx % RX_RING_SIZE; |
| 1142 | int rx_work_limit = ep->dirty_rx + RX_RING_SIZE - ep->cur_rx; |
| 1143 | int work_done = 0; |
| 1144 | |
| 1145 | if (debug > 4) |
Ben Boeckel | 3ee307d | 2013-11-01 08:53:30 -0400 | [diff] [blame] | 1146 | netdev_dbg(dev, " In epic_rx(), entry %d %8.8x.\n", entry, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1147 | ep->rx_ring[entry].rxstatus); |
| 1148 | |
| 1149 | if (rx_work_limit > budget) |
| 1150 | rx_work_limit = budget; |
| 1151 | |
| 1152 | /* If we own the next entry, it's a new packet. Send it up. */ |
Al Viro | 9ebfd49 | 2008-03-16 22:22:04 +0000 | [diff] [blame] | 1153 | while ((ep->rx_ring[entry].rxstatus & DescOwn) == 0) { |
| 1154 | int status = ep->rx_ring[entry].rxstatus; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1155 | |
| 1156 | if (debug > 4) |
Ben Boeckel | 3ee307d | 2013-11-01 08:53:30 -0400 | [diff] [blame] | 1157 | netdev_dbg(dev, " epic_rx() status was %8.8x.\n", |
| 1158 | status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1159 | if (--rx_work_limit < 0) |
| 1160 | break; |
| 1161 | if (status & 0x2006) { |
| 1162 | if (debug > 2) |
Ben Boeckel | 3ee307d | 2013-11-01 08:53:30 -0400 | [diff] [blame] | 1163 | netdev_dbg(dev, "epic_rx() error status was %8.8x.\n", |
| 1164 | status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1165 | if (status & 0x2000) { |
Ben Boeckel | 3ee307d | 2013-11-01 08:53:30 -0400 | [diff] [blame] | 1166 | netdev_warn(dev, "Oversized Ethernet frame spanned multiple buffers, status %4.4x!\n", |
| 1167 | status); |
Kulikov Vasiliy | 275defc | 2010-07-05 02:13:20 +0000 | [diff] [blame] | 1168 | dev->stats.rx_length_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1169 | } else if (status & 0x0006) |
| 1170 | /* Rx Frame errors are counted in hardware. */ |
Kulikov Vasiliy | 275defc | 2010-07-05 02:13:20 +0000 | [diff] [blame] | 1171 | dev->stats.rx_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1172 | } else { |
| 1173 | /* Malloc up new buffer, compatible with net-2e. */ |
| 1174 | /* Omit the four octet CRC from the length. */ |
| 1175 | short pkt_len = (status >> 16) - 4; |
| 1176 | struct sk_buff *skb; |
| 1177 | |
| 1178 | if (pkt_len > PKT_BUF_SZ - 4) { |
Ben Boeckel | 3ee307d | 2013-11-01 08:53:30 -0400 | [diff] [blame] | 1179 | netdev_err(dev, "Oversized Ethernet frame, status %x %d bytes.\n", |
| 1180 | status, pkt_len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1181 | pkt_len = 1514; |
| 1182 | } |
| 1183 | /* Check if the packet is long enough to accept without copying |
| 1184 | to a minimally-sized skbuff. */ |
Joe Perches | 8e95a20 | 2009-12-03 07:58:21 +0000 | [diff] [blame] | 1185 | if (pkt_len < rx_copybreak && |
Pradeep A. Dalvi | dae2e9f | 2012-02-06 11:16:13 +0000 | [diff] [blame] | 1186 | (skb = netdev_alloc_skb(dev, pkt_len + 2)) != NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1187 | skb_reserve(skb, 2); /* 16 byte align the IP header */ |
| 1188 | pci_dma_sync_single_for_cpu(ep->pci_dev, |
| 1189 | ep->rx_ring[entry].bufaddr, |
| 1190 | ep->rx_buf_sz, |
| 1191 | PCI_DMA_FROMDEVICE); |
David S. Miller | 8c7b7fa | 2007-07-10 22:08:12 -0700 | [diff] [blame] | 1192 | skb_copy_to_linear_data(skb, ep->rx_skbuff[entry]->data, pkt_len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1193 | skb_put(skb, pkt_len); |
| 1194 | pci_dma_sync_single_for_device(ep->pci_dev, |
| 1195 | ep->rx_ring[entry].bufaddr, |
| 1196 | ep->rx_buf_sz, |
| 1197 | PCI_DMA_FROMDEVICE); |
| 1198 | } else { |
Jeff Garzik | f3b197a | 2006-05-26 21:39:03 -0400 | [diff] [blame] | 1199 | pci_unmap_single(ep->pci_dev, |
| 1200 | ep->rx_ring[entry].bufaddr, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1201 | ep->rx_buf_sz, PCI_DMA_FROMDEVICE); |
| 1202 | skb_put(skb = ep->rx_skbuff[entry], pkt_len); |
| 1203 | ep->rx_skbuff[entry] = NULL; |
| 1204 | } |
| 1205 | skb->protocol = eth_type_trans(skb, dev); |
| 1206 | netif_receive_skb(skb); |
Kulikov Vasiliy | 275defc | 2010-07-05 02:13:20 +0000 | [diff] [blame] | 1207 | dev->stats.rx_packets++; |
| 1208 | dev->stats.rx_bytes += pkt_len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1209 | } |
| 1210 | work_done++; |
| 1211 | entry = (++ep->cur_rx) % RX_RING_SIZE; |
| 1212 | } |
| 1213 | |
| 1214 | /* Refill the Rx ring buffers. */ |
| 1215 | for (; ep->cur_rx - ep->dirty_rx > 0; ep->dirty_rx++) { |
| 1216 | entry = ep->dirty_rx % RX_RING_SIZE; |
| 1217 | if (ep->rx_skbuff[entry] == NULL) { |
| 1218 | struct sk_buff *skb; |
Pradeep A. Dalvi | dae2e9f | 2012-02-06 11:16:13 +0000 | [diff] [blame] | 1219 | skb = ep->rx_skbuff[entry] = netdev_alloc_skb(dev, ep->rx_buf_sz + 2); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1220 | if (skb == NULL) |
| 1221 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1222 | skb_reserve(skb, 2); /* Align IP on 16 byte boundaries */ |
Jeff Garzik | f3b197a | 2006-05-26 21:39:03 -0400 | [diff] [blame] | 1223 | ep->rx_ring[entry].bufaddr = pci_map_single(ep->pci_dev, |
David S. Miller | 689be43 | 2005-06-28 15:25:31 -0700 | [diff] [blame] | 1224 | skb->data, ep->rx_buf_sz, PCI_DMA_FROMDEVICE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1225 | work_done++; |
| 1226 | } |
Al Viro | 9ebfd49 | 2008-03-16 22:22:04 +0000 | [diff] [blame] | 1227 | /* AV: shouldn't we add a barrier here? */ |
| 1228 | ep->rx_ring[entry].rxstatus = DescOwn; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1229 | } |
| 1230 | return work_done; |
| 1231 | } |
| 1232 | |
| 1233 | static void epic_rx_err(struct net_device *dev, struct epic_private *ep) |
| 1234 | { |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 1235 | void __iomem *ioaddr = ep->ioaddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1236 | int status; |
| 1237 | |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 1238 | status = er32(INTSTAT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1239 | |
| 1240 | if (status == EpicRemoved) |
| 1241 | return; |
| 1242 | if (status & RxOverflow) /* Missed a Rx frame. */ |
Kulikov Vasiliy | 275defc | 2010-07-05 02:13:20 +0000 | [diff] [blame] | 1243 | dev->stats.rx_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1244 | if (status & (RxOverflow | RxFull)) |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 1245 | ew16(COMMAND, RxQueued); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1246 | } |
| 1247 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1248 | static int epic_poll(struct napi_struct *napi, int budget) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1249 | { |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1250 | struct epic_private *ep = container_of(napi, struct epic_private, napi); |
| 1251 | struct net_device *dev = ep->mii.dev; |
| 1252 | int work_done = 0; |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 1253 | void __iomem *ioaddr = ep->ioaddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1254 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1255 | rx_action: |
| 1256 | |
| 1257 | epic_tx(dev, ep); |
| 1258 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1259 | work_done += epic_rx(dev, budget); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1260 | |
| 1261 | epic_rx_err(dev, ep); |
| 1262 | |
David S. Miller | 4ec2411 | 2008-01-07 20:48:21 -0800 | [diff] [blame] | 1263 | if (work_done < budget) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1264 | unsigned long flags; |
| 1265 | int more; |
| 1266 | |
| 1267 | /* A bit baroque but it avoids a (space hungry) spin_unlock */ |
| 1268 | |
| 1269 | spin_lock_irqsave(&ep->napi_lock, flags); |
| 1270 | |
| 1271 | more = ep->reschedule_in_poll; |
| 1272 | if (!more) { |
Ben Hutchings | 288379f | 2009-01-19 16:43:59 -0800 | [diff] [blame] | 1273 | __napi_complete(napi); |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 1274 | ew32(INTSTAT, EpicNapiEvent); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1275 | epic_napi_irq_on(dev, ep); |
| 1276 | } else |
| 1277 | ep->reschedule_in_poll--; |
| 1278 | |
| 1279 | spin_unlock_irqrestore(&ep->napi_lock, flags); |
| 1280 | |
| 1281 | if (more) |
| 1282 | goto rx_action; |
| 1283 | } |
| 1284 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1285 | return work_done; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1286 | } |
| 1287 | |
| 1288 | static int epic_close(struct net_device *dev) |
| 1289 | { |
Wang Chen | 4cf1653 | 2008-11-12 23:38:14 -0800 | [diff] [blame] | 1290 | struct epic_private *ep = netdev_priv(dev); |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 1291 | struct pci_dev *pdev = ep->pci_dev; |
| 1292 | void __iomem *ioaddr = ep->ioaddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1293 | struct sk_buff *skb; |
| 1294 | int i; |
| 1295 | |
| 1296 | netif_stop_queue(dev); |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1297 | napi_disable(&ep->napi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1298 | |
| 1299 | if (debug > 1) |
Ben Boeckel | 3ee307d | 2013-11-01 08:53:30 -0400 | [diff] [blame] | 1300 | netdev_dbg(dev, "Shutting down ethercard, status was %2.2x.\n", |
| 1301 | er32(INTSTAT)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1302 | |
| 1303 | del_timer_sync(&ep->timer); |
| 1304 | |
| 1305 | epic_disable_int(dev, ep); |
| 1306 | |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 1307 | free_irq(pdev->irq, dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1308 | |
| 1309 | epic_pause(dev); |
| 1310 | |
| 1311 | /* Free all the skbuffs in the Rx queue. */ |
| 1312 | for (i = 0; i < RX_RING_SIZE; i++) { |
| 1313 | skb = ep->rx_skbuff[i]; |
| 1314 | ep->rx_skbuff[i] = NULL; |
| 1315 | ep->rx_ring[i].rxstatus = 0; /* Not owned by Epic chip. */ |
| 1316 | ep->rx_ring[i].buflength = 0; |
| 1317 | if (skb) { |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 1318 | pci_unmap_single(pdev, ep->rx_ring[i].bufaddr, |
Ben Boeckel | 3ee307d | 2013-11-01 08:53:30 -0400 | [diff] [blame] | 1319 | ep->rx_buf_sz, PCI_DMA_FROMDEVICE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1320 | dev_kfree_skb(skb); |
| 1321 | } |
| 1322 | ep->rx_ring[i].bufaddr = 0xBADF00D0; /* An invalid address. */ |
| 1323 | } |
| 1324 | for (i = 0; i < TX_RING_SIZE; i++) { |
| 1325 | skb = ep->tx_skbuff[i]; |
| 1326 | ep->tx_skbuff[i] = NULL; |
| 1327 | if (!skb) |
| 1328 | continue; |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 1329 | pci_unmap_single(pdev, ep->tx_ring[i].bufaddr, skb->len, |
| 1330 | PCI_DMA_TODEVICE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1331 | dev_kfree_skb(skb); |
| 1332 | } |
| 1333 | |
| 1334 | /* Green! Leave the chip in low-power mode. */ |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 1335 | ew32(GENCTL, 0x0008); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1336 | |
| 1337 | return 0; |
| 1338 | } |
| 1339 | |
| 1340 | static struct net_device_stats *epic_get_stats(struct net_device *dev) |
| 1341 | { |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 1342 | struct epic_private *ep = netdev_priv(dev); |
| 1343 | void __iomem *ioaddr = ep->ioaddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1344 | |
| 1345 | if (netif_running(dev)) { |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 1346 | struct net_device_stats *stats = &dev->stats; |
| 1347 | |
| 1348 | stats->rx_missed_errors += er8(MPCNT); |
| 1349 | stats->rx_frame_errors += er8(ALICNT); |
| 1350 | stats->rx_crc_errors += er8(CRCCNT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1351 | } |
| 1352 | |
Kulikov Vasiliy | 275defc | 2010-07-05 02:13:20 +0000 | [diff] [blame] | 1353 | return &dev->stats; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1354 | } |
| 1355 | |
| 1356 | /* Set or clear the multicast filter for this adaptor. |
| 1357 | Note that we only use exclusion around actually queueing the |
| 1358 | new frame, not around filling ep->setup_frame. This is non-deterministic |
| 1359 | when re-entered but still correct. */ |
| 1360 | |
| 1361 | static void set_rx_mode(struct net_device *dev) |
| 1362 | { |
Wang Chen | 4cf1653 | 2008-11-12 23:38:14 -0800 | [diff] [blame] | 1363 | struct epic_private *ep = netdev_priv(dev); |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 1364 | void __iomem *ioaddr = ep->ioaddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1365 | unsigned char mc_filter[8]; /* Multicast hash filter */ |
| 1366 | int i; |
| 1367 | |
| 1368 | if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */ |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 1369 | ew32(RxCtrl, 0x002c); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1370 | /* Unconditionally log net taps. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1371 | memset(mc_filter, 0xff, sizeof(mc_filter)); |
Jiri Pirko | 4cd24ea | 2010-02-08 04:30:35 +0000 | [diff] [blame] | 1372 | } else if ((!netdev_mc_empty(dev)) || (dev->flags & IFF_ALLMULTI)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1373 | /* There is apparently a chip bug, so the multicast filter |
| 1374 | is never enabled. */ |
| 1375 | /* Too many to filter perfectly -- accept all multicasts. */ |
| 1376 | memset(mc_filter, 0xff, sizeof(mc_filter)); |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 1377 | ew32(RxCtrl, 0x000c); |
Jiri Pirko | 4cd24ea | 2010-02-08 04:30:35 +0000 | [diff] [blame] | 1378 | } else if (netdev_mc_empty(dev)) { |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 1379 | ew32(RxCtrl, 0x0004); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1380 | return; |
| 1381 | } else { /* Never executed, for now. */ |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 1382 | struct netdev_hw_addr *ha; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1383 | |
| 1384 | memset(mc_filter, 0, sizeof(mc_filter)); |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 1385 | netdev_for_each_mc_addr(ha, dev) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1386 | unsigned int bit_nr = |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 1387 | ether_crc_le(ETH_ALEN, ha->addr) & 0x3f; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1388 | mc_filter[bit_nr >> 3] |= (1 << bit_nr); |
| 1389 | } |
| 1390 | } |
| 1391 | /* ToDo: perhaps we need to stop the Tx and Rx process here? */ |
| 1392 | if (memcmp(mc_filter, ep->mc_filter, sizeof(mc_filter))) { |
| 1393 | for (i = 0; i < 4; i++) |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 1394 | ew16(MC0 + i*4, ((u16 *)mc_filter)[i]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1395 | memcpy(ep->mc_filter, mc_filter, sizeof(mc_filter)); |
| 1396 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1397 | } |
| 1398 | |
| 1399 | static void netdev_get_drvinfo (struct net_device *dev, struct ethtool_drvinfo *info) |
| 1400 | { |
Wang Chen | 4cf1653 | 2008-11-12 23:38:14 -0800 | [diff] [blame] | 1401 | struct epic_private *np = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1402 | |
Rick Jones | 68aad78 | 2011-11-07 13:29:27 +0000 | [diff] [blame] | 1403 | strlcpy(info->driver, DRV_NAME, sizeof(info->driver)); |
| 1404 | strlcpy(info->version, DRV_VERSION, sizeof(info->version)); |
| 1405 | strlcpy(info->bus_info, pci_name(np->pci_dev), sizeof(info->bus_info)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1406 | } |
| 1407 | |
| 1408 | static int netdev_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) |
| 1409 | { |
Wang Chen | 4cf1653 | 2008-11-12 23:38:14 -0800 | [diff] [blame] | 1410 | struct epic_private *np = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1411 | int rc; |
| 1412 | |
| 1413 | spin_lock_irq(&np->lock); |
| 1414 | rc = mii_ethtool_gset(&np->mii, cmd); |
| 1415 | spin_unlock_irq(&np->lock); |
| 1416 | |
| 1417 | return rc; |
| 1418 | } |
| 1419 | |
| 1420 | static int netdev_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) |
| 1421 | { |
Wang Chen | 4cf1653 | 2008-11-12 23:38:14 -0800 | [diff] [blame] | 1422 | struct epic_private *np = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1423 | int rc; |
| 1424 | |
| 1425 | spin_lock_irq(&np->lock); |
| 1426 | rc = mii_ethtool_sset(&np->mii, cmd); |
| 1427 | spin_unlock_irq(&np->lock); |
| 1428 | |
| 1429 | return rc; |
| 1430 | } |
| 1431 | |
| 1432 | static int netdev_nway_reset(struct net_device *dev) |
| 1433 | { |
Wang Chen | 4cf1653 | 2008-11-12 23:38:14 -0800 | [diff] [blame] | 1434 | struct epic_private *np = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1435 | return mii_nway_restart(&np->mii); |
| 1436 | } |
| 1437 | |
| 1438 | static u32 netdev_get_link(struct net_device *dev) |
| 1439 | { |
Wang Chen | 4cf1653 | 2008-11-12 23:38:14 -0800 | [diff] [blame] | 1440 | struct epic_private *np = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1441 | return mii_link_ok(&np->mii); |
| 1442 | } |
| 1443 | |
| 1444 | static u32 netdev_get_msglevel(struct net_device *dev) |
| 1445 | { |
| 1446 | return debug; |
| 1447 | } |
| 1448 | |
| 1449 | static void netdev_set_msglevel(struct net_device *dev, u32 value) |
| 1450 | { |
| 1451 | debug = value; |
| 1452 | } |
| 1453 | |
| 1454 | static int ethtool_begin(struct net_device *dev) |
| 1455 | { |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 1456 | struct epic_private *ep = netdev_priv(dev); |
| 1457 | void __iomem *ioaddr = ep->ioaddr; |
| 1458 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1459 | /* power-up, if interface is down */ |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 1460 | if (!netif_running(dev)) { |
| 1461 | ew32(GENCTL, 0x0200); |
| 1462 | ew32(NVCTL, (er32(NVCTL) & ~0x003c) | 0x4800); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1463 | } |
| 1464 | return 0; |
| 1465 | } |
| 1466 | |
| 1467 | static void ethtool_complete(struct net_device *dev) |
| 1468 | { |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 1469 | struct epic_private *ep = netdev_priv(dev); |
| 1470 | void __iomem *ioaddr = ep->ioaddr; |
| 1471 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1472 | /* power-down, if interface is down */ |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 1473 | if (!netif_running(dev)) { |
| 1474 | ew32(GENCTL, 0x0008); |
| 1475 | ew32(NVCTL, (er32(NVCTL) & ~0x483c) | 0x0000); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1476 | } |
| 1477 | } |
| 1478 | |
Jeff Garzik | 7282d49 | 2006-09-13 14:30:00 -0400 | [diff] [blame] | 1479 | static const struct ethtool_ops netdev_ethtool_ops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1480 | .get_drvinfo = netdev_get_drvinfo, |
| 1481 | .get_settings = netdev_get_settings, |
| 1482 | .set_settings = netdev_set_settings, |
| 1483 | .nway_reset = netdev_nway_reset, |
| 1484 | .get_link = netdev_get_link, |
| 1485 | .get_msglevel = netdev_get_msglevel, |
| 1486 | .set_msglevel = netdev_set_msglevel, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1487 | .begin = ethtool_begin, |
| 1488 | .complete = ethtool_complete |
| 1489 | }; |
| 1490 | |
| 1491 | static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) |
| 1492 | { |
Wang Chen | 4cf1653 | 2008-11-12 23:38:14 -0800 | [diff] [blame] | 1493 | struct epic_private *np = netdev_priv(dev); |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 1494 | void __iomem *ioaddr = np->ioaddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1495 | struct mii_ioctl_data *data = if_mii(rq); |
| 1496 | int rc; |
| 1497 | |
| 1498 | /* power-up, if interface is down */ |
| 1499 | if (! netif_running(dev)) { |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 1500 | ew32(GENCTL, 0x0200); |
| 1501 | ew32(NVCTL, (er32(NVCTL) & ~0x003c) | 0x4800); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1502 | } |
| 1503 | |
| 1504 | /* all non-ethtool ioctls (the SIOC[GS]MIIxxx ioctls) */ |
| 1505 | spin_lock_irq(&np->lock); |
| 1506 | rc = generic_mii_ioctl(&np->mii, data, cmd, NULL); |
| 1507 | spin_unlock_irq(&np->lock); |
| 1508 | |
| 1509 | /* power-down, if interface is down */ |
| 1510 | if (! netif_running(dev)) { |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 1511 | ew32(GENCTL, 0x0008); |
| 1512 | ew32(NVCTL, (er32(NVCTL) & ~0x483c) | 0x0000); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1513 | } |
| 1514 | return rc; |
| 1515 | } |
| 1516 | |
| 1517 | |
Bill Pemberton | b0171cd | 2012-12-03 09:23:42 -0500 | [diff] [blame] | 1518 | static void epic_remove_one(struct pci_dev *pdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1519 | { |
| 1520 | struct net_device *dev = pci_get_drvdata(pdev); |
Wang Chen | 4cf1653 | 2008-11-12 23:38:14 -0800 | [diff] [blame] | 1521 | struct epic_private *ep = netdev_priv(dev); |
Jeff Garzik | f3b197a | 2006-05-26 21:39:03 -0400 | [diff] [blame] | 1522 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1523 | pci_free_consistent(pdev, TX_TOTAL_SIZE, ep->tx_ring, ep->tx_ring_dma); |
| 1524 | pci_free_consistent(pdev, RX_TOTAL_SIZE, ep->rx_ring, ep->rx_ring_dma); |
| 1525 | unregister_netdev(dev); |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 1526 | pci_iounmap(pdev, ep->ioaddr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1527 | pci_release_regions(pdev); |
| 1528 | free_netdev(dev); |
| 1529 | pci_disable_device(pdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1530 | /* pci_power_off(pdev, -1); */ |
| 1531 | } |
| 1532 | |
| 1533 | |
| 1534 | #ifdef CONFIG_PM |
| 1535 | |
| 1536 | static int epic_suspend (struct pci_dev *pdev, pm_message_t state) |
| 1537 | { |
| 1538 | struct net_device *dev = pci_get_drvdata(pdev); |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 1539 | struct epic_private *ep = netdev_priv(dev); |
| 1540 | void __iomem *ioaddr = ep->ioaddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1541 | |
| 1542 | if (!netif_running(dev)) |
| 1543 | return 0; |
| 1544 | epic_pause(dev); |
| 1545 | /* Put the chip into low-power mode. */ |
Francois Romieu | aae9bc3 | 2012-03-13 12:04:26 +0100 | [diff] [blame] | 1546 | ew32(GENCTL, 0x0008); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1547 | /* pci_power_off(pdev, -1); */ |
| 1548 | return 0; |
| 1549 | } |
| 1550 | |
| 1551 | |
| 1552 | static int epic_resume (struct pci_dev *pdev) |
| 1553 | { |
| 1554 | struct net_device *dev = pci_get_drvdata(pdev); |
| 1555 | |
| 1556 | if (!netif_running(dev)) |
| 1557 | return 0; |
| 1558 | epic_restart(dev); |
| 1559 | /* pci_power_on(pdev); */ |
| 1560 | return 0; |
| 1561 | } |
| 1562 | |
| 1563 | #endif /* CONFIG_PM */ |
| 1564 | |
| 1565 | |
| 1566 | static struct pci_driver epic_driver = { |
| 1567 | .name = DRV_NAME, |
| 1568 | .id_table = epic_pci_tbl, |
| 1569 | .probe = epic_init_one, |
Bill Pemberton | b0171cd | 2012-12-03 09:23:42 -0500 | [diff] [blame] | 1570 | .remove = epic_remove_one, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1571 | #ifdef CONFIG_PM |
| 1572 | .suspend = epic_suspend, |
| 1573 | .resume = epic_resume, |
| 1574 | #endif /* CONFIG_PM */ |
| 1575 | }; |
| 1576 | |
| 1577 | |
| 1578 | static int __init epic_init (void) |
| 1579 | { |
| 1580 | /* when a module, this is printed whether or not devices are found in probe */ |
| 1581 | #ifdef MODULE |
Ben Boeckel | 3ee307d | 2013-11-01 08:53:30 -0400 | [diff] [blame] | 1582 | pr_info("%s%s\n", version, version2); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1583 | #endif |
| 1584 | |
Jeff Garzik | 2991762 | 2006-08-19 17:48:59 -0400 | [diff] [blame] | 1585 | return pci_register_driver(&epic_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1586 | } |
| 1587 | |
| 1588 | |
| 1589 | static void __exit epic_cleanup (void) |
| 1590 | { |
| 1591 | pci_unregister_driver (&epic_driver); |
| 1592 | } |
| 1593 | |
| 1594 | |
| 1595 | module_init(epic_init); |
| 1596 | module_exit(epic_cleanup); |