Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | Written 1998-2000 by Donald Becker. |
| 3 | |
| 4 | This software may be used and distributed according to the terms of |
| 5 | the GNU General Public License (GPL), incorporated herein by reference. |
| 6 | Drivers based on or derived from this code fall under the GPL and must |
| 7 | retain the authorship, copyright and license notice. This file is not |
| 8 | a complete program and may only be used when the entire operating |
| 9 | system is licensed under the GPL. |
| 10 | |
| 11 | The author may be reached as becker@scyld.com, or C/O |
| 12 | Scyld Computing Corporation |
| 13 | 410 Severn Ave., Suite 210 |
| 14 | Annapolis MD 21403 |
| 15 | |
| 16 | Support information and updates available at |
| 17 | http://www.scyld.com/network/pci-skeleton.html |
| 18 | |
| 19 | Linux kernel updates: |
| 20 | |
| 21 | Version 2.51, Nov 17, 2001 (jgarzik): |
| 22 | - Add ethtool support |
| 23 | - Replace some MII-related magic numbers with constants |
| 24 | |
| 25 | */ |
| 26 | |
| 27 | #define DRV_NAME "fealnx" |
Andy Gospodarek | d5b2069 | 2006-09-11 17:39:18 -0400 | [diff] [blame] | 28 | #define DRV_VERSION "2.52" |
| 29 | #define DRV_RELDATE "Sep-11-2006" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | |
| 31 | static int debug; /* 1-> print debug message */ |
| 32 | static int max_interrupt_work = 20; |
| 33 | |
| 34 | /* Maximum number of multicast addresses to filter (vs. Rx-all-multicast). */ |
| 35 | static int multicast_filter_limit = 32; |
| 36 | |
| 37 | /* Set the copy breakpoint for the copy-only-tiny-frames scheme. */ |
| 38 | /* Setting to > 1518 effectively disables this feature. */ |
| 39 | static int rx_copybreak; |
| 40 | |
| 41 | /* Used to pass the media type, etc. */ |
| 42 | /* Both 'options[]' and 'full_duplex[]' should exist for driver */ |
| 43 | /* interoperability. */ |
| 44 | /* The media type is usually passed in 'options[]'. */ |
| 45 | #define MAX_UNITS 8 /* More are supported, limit only on options */ |
| 46 | static int options[MAX_UNITS] = { -1, -1, -1, -1, -1, -1, -1, -1 }; |
| 47 | static int full_duplex[MAX_UNITS] = { -1, -1, -1, -1, -1, -1, -1, -1 }; |
| 48 | |
| 49 | /* Operational parameters that are set at compile time. */ |
| 50 | /* Keep the ring sizes a power of two for compile efficiency. */ |
| 51 | /* The compiler will convert <unsigned>'%'<2^N> into a bit mask. */ |
| 52 | /* Making the Tx ring too large decreases the effectiveness of channel */ |
| 53 | /* bonding and packet priority. */ |
| 54 | /* There are no ill effects from too-large receive rings. */ |
| 55 | // 88-12-9 modify, |
| 56 | // #define TX_RING_SIZE 16 |
| 57 | // #define RX_RING_SIZE 32 |
| 58 | #define TX_RING_SIZE 6 |
| 59 | #define RX_RING_SIZE 12 |
| 60 | #define TX_TOTAL_SIZE TX_RING_SIZE*sizeof(struct fealnx_desc) |
| 61 | #define RX_TOTAL_SIZE RX_RING_SIZE*sizeof(struct fealnx_desc) |
| 62 | |
| 63 | /* Operational parameters that usually are not changed. */ |
| 64 | /* Time in jiffies before concluding the transmitter is hung. */ |
| 65 | #define TX_TIMEOUT (2*HZ) |
| 66 | |
| 67 | #define PKT_BUF_SZ 1536 /* Size of each temporary Rx buffer. */ |
| 68 | |
| 69 | |
| 70 | /* Include files, designed to support most kernel versions 2.0.0 and later. */ |
| 71 | #include <linux/module.h> |
| 72 | #include <linux/kernel.h> |
| 73 | #include <linux/string.h> |
| 74 | #include <linux/timer.h> |
| 75 | #include <linux/errno.h> |
| 76 | #include <linux/ioport.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 77 | #include <linux/interrupt.h> |
| 78 | #include <linux/pci.h> |
| 79 | #include <linux/netdevice.h> |
| 80 | #include <linux/etherdevice.h> |
| 81 | #include <linux/skbuff.h> |
| 82 | #include <linux/init.h> |
| 83 | #include <linux/mii.h> |
| 84 | #include <linux/ethtool.h> |
| 85 | #include <linux/crc32.h> |
| 86 | #include <linux/delay.h> |
| 87 | #include <linux/bitops.h> |
| 88 | |
| 89 | #include <asm/processor.h> /* Processor type for cache alignment. */ |
| 90 | #include <asm/io.h> |
| 91 | #include <asm/uaccess.h> |
Jeff Garzik | 28cd428 | 2008-06-27 02:18:50 -0400 | [diff] [blame] | 92 | #include <asm/byteorder.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 93 | |
| 94 | /* These identify the driver base version and may not be removed. */ |
Bill Pemberton | a0a4efe | 2012-12-03 09:24:09 -0500 | [diff] [blame] | 95 | static const char version[] = |
Stephen Hemminger | 6f101d1 | 2009-02-26 10:19:30 +0000 | [diff] [blame] | 96 | KERN_INFO DRV_NAME ".c:v" DRV_VERSION " " DRV_RELDATE "\n"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 97 | |
| 98 | |
| 99 | /* This driver was written to use PCI memory space, however some x86 systems |
| 100 | work only with I/O space accesses. */ |
| 101 | #ifndef __alpha__ |
| 102 | #define USE_IO_OPS |
| 103 | #endif |
| 104 | |
| 105 | /* Kernel compatibility defines, some common to David Hinds' PCMCIA package. */ |
| 106 | /* This is only in the support-all-kernels source code. */ |
| 107 | |
| 108 | #define RUN_AT(x) (jiffies + (x)) |
| 109 | |
| 110 | MODULE_AUTHOR("Myson or whoever"); |
| 111 | MODULE_DESCRIPTION("Myson MTD-8xx 100/10M Ethernet PCI Adapter Driver"); |
| 112 | MODULE_LICENSE("GPL"); |
| 113 | module_param(max_interrupt_work, int, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 114 | module_param(debug, int, 0); |
| 115 | module_param(rx_copybreak, int, 0); |
| 116 | module_param(multicast_filter_limit, int, 0); |
| 117 | module_param_array(options, int, NULL, 0); |
| 118 | module_param_array(full_duplex, int, NULL, 0); |
| 119 | MODULE_PARM_DESC(max_interrupt_work, "fealnx maximum events handled per interrupt"); |
| 120 | MODULE_PARM_DESC(debug, "fealnx enable debugging (0-1)"); |
| 121 | MODULE_PARM_DESC(rx_copybreak, "fealnx copy breakpoint for copy-only-tiny-frames"); |
| 122 | MODULE_PARM_DESC(multicast_filter_limit, "fealnx maximum number of filtered multicast addresses"); |
| 123 | MODULE_PARM_DESC(options, "fealnx: Bits 0-3: media type, bit 17: full duplex"); |
| 124 | MODULE_PARM_DESC(full_duplex, "fealnx full duplex setting(s) (1)"); |
| 125 | |
Jeff Garzik | 46009c8 | 2006-06-27 09:12:38 -0400 | [diff] [blame] | 126 | enum { |
| 127 | MIN_REGION_SIZE = 136, |
| 128 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 129 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 130 | /* A chip capabilities table, matching the entries in pci_tbl[] above. */ |
| 131 | enum chip_capability_flags { |
| 132 | HAS_MII_XCVR, |
| 133 | HAS_CHIP_XCVR, |
| 134 | }; |
| 135 | |
| 136 | /* 89/6/13 add, */ |
| 137 | /* for different PHY */ |
| 138 | enum phy_type_flags { |
| 139 | MysonPHY = 1, |
| 140 | AhdocPHY = 2, |
| 141 | SeeqPHY = 3, |
| 142 | MarvellPHY = 4, |
| 143 | Myson981 = 5, |
| 144 | LevelOnePHY = 6, |
| 145 | OtherPHY = 10, |
| 146 | }; |
| 147 | |
| 148 | struct chip_info { |
| 149 | char *chip_name; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 150 | int flags; |
| 151 | }; |
| 152 | |
Bill Pemberton | a0a4efe | 2012-12-03 09:24:09 -0500 | [diff] [blame] | 153 | static const struct chip_info skel_netdrv_tbl[] = { |
Jeff Garzik | c3d8e68 | 2006-06-27 08:54:34 -0400 | [diff] [blame] | 154 | { "100/10M Ethernet PCI Adapter", HAS_MII_XCVR }, |
| 155 | { "100/10M Ethernet PCI Adapter", HAS_CHIP_XCVR }, |
| 156 | { "1000/100/10M Ethernet PCI Adapter", HAS_MII_XCVR }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 157 | }; |
| 158 | |
| 159 | /* Offsets to the Command and Status Registers. */ |
| 160 | enum fealnx_offsets { |
| 161 | PAR0 = 0x0, /* physical address 0-3 */ |
| 162 | PAR1 = 0x04, /* physical address 4-5 */ |
| 163 | MAR0 = 0x08, /* multicast address 0-3 */ |
| 164 | MAR1 = 0x0C, /* multicast address 4-7 */ |
| 165 | FAR0 = 0x10, /* flow-control address 0-3 */ |
| 166 | FAR1 = 0x14, /* flow-control address 4-5 */ |
| 167 | TCRRCR = 0x18, /* receive & transmit configuration */ |
| 168 | BCR = 0x1C, /* bus command */ |
| 169 | TXPDR = 0x20, /* transmit polling demand */ |
| 170 | RXPDR = 0x24, /* receive polling demand */ |
| 171 | RXCWP = 0x28, /* receive current word pointer */ |
| 172 | TXLBA = 0x2C, /* transmit list base address */ |
| 173 | RXLBA = 0x30, /* receive list base address */ |
| 174 | ISR = 0x34, /* interrupt status */ |
| 175 | IMR = 0x38, /* interrupt mask */ |
| 176 | FTH = 0x3C, /* flow control high/low threshold */ |
| 177 | MANAGEMENT = 0x40, /* bootrom/eeprom and mii management */ |
| 178 | TALLY = 0x44, /* tally counters for crc and mpa */ |
| 179 | TSR = 0x48, /* tally counter for transmit status */ |
| 180 | BMCRSR = 0x4c, /* basic mode control and status */ |
| 181 | PHYIDENTIFIER = 0x50, /* phy identifier */ |
| 182 | ANARANLPAR = 0x54, /* auto-negotiation advertisement and link |
| 183 | partner ability */ |
| 184 | ANEROCR = 0x58, /* auto-negotiation expansion and pci conf. */ |
| 185 | BPREMRPSR = 0x5c, /* bypass & receive error mask and phy status */ |
| 186 | }; |
| 187 | |
| 188 | /* Bits in the interrupt status/enable registers. */ |
| 189 | /* The bits in the Intr Status/Enable registers, mostly interrupt sources. */ |
| 190 | enum intr_status_bits { |
| 191 | RFCON = 0x00020000, /* receive flow control xon packet */ |
| 192 | RFCOFF = 0x00010000, /* receive flow control xoff packet */ |
| 193 | LSCStatus = 0x00008000, /* link status change */ |
| 194 | ANCStatus = 0x00004000, /* autonegotiation completed */ |
| 195 | FBE = 0x00002000, /* fatal bus error */ |
| 196 | FBEMask = 0x00001800, /* mask bit12-11 */ |
| 197 | ParityErr = 0x00000000, /* parity error */ |
| 198 | TargetErr = 0x00001000, /* target abort */ |
| 199 | MasterErr = 0x00000800, /* master error */ |
| 200 | TUNF = 0x00000400, /* transmit underflow */ |
| 201 | ROVF = 0x00000200, /* receive overflow */ |
| 202 | ETI = 0x00000100, /* transmit early int */ |
| 203 | ERI = 0x00000080, /* receive early int */ |
| 204 | CNTOVF = 0x00000040, /* counter overflow */ |
| 205 | RBU = 0x00000020, /* receive buffer unavailable */ |
| 206 | TBU = 0x00000010, /* transmit buffer unavilable */ |
| 207 | TI = 0x00000008, /* transmit interrupt */ |
| 208 | RI = 0x00000004, /* receive interrupt */ |
| 209 | RxErr = 0x00000002, /* receive error */ |
| 210 | }; |
| 211 | |
| 212 | /* Bits in the NetworkConfig register, W for writing, R for reading */ |
| 213 | /* FIXME: some names are invented by me. Marked with (name?) */ |
| 214 | /* If you have docs and know bit names, please fix 'em */ |
| 215 | enum rx_mode_bits { |
| 216 | CR_W_ENH = 0x02000000, /* enhanced mode (name?) */ |
| 217 | CR_W_FD = 0x00100000, /* full duplex */ |
| 218 | CR_W_PS10 = 0x00080000, /* 10 mbit */ |
| 219 | CR_W_TXEN = 0x00040000, /* tx enable (name?) */ |
| 220 | CR_W_PS1000 = 0x00010000, /* 1000 mbit */ |
| 221 | /* CR_W_RXBURSTMASK= 0x00000e00, Im unsure about this */ |
| 222 | CR_W_RXMODEMASK = 0x000000e0, |
| 223 | CR_W_PROM = 0x00000080, /* promiscuous mode */ |
| 224 | CR_W_AB = 0x00000040, /* accept broadcast */ |
| 225 | CR_W_AM = 0x00000020, /* accept mutlicast */ |
| 226 | CR_W_ARP = 0x00000008, /* receive runt pkt */ |
| 227 | CR_W_ALP = 0x00000004, /* receive long pkt */ |
| 228 | CR_W_SEP = 0x00000002, /* receive error pkt */ |
| 229 | CR_W_RXEN = 0x00000001, /* rx enable (unicast?) (name?) */ |
| 230 | |
| 231 | CR_R_TXSTOP = 0x04000000, /* tx stopped (name?) */ |
| 232 | CR_R_FD = 0x00100000, /* full duplex detected */ |
| 233 | CR_R_PS10 = 0x00080000, /* 10 mbit detected */ |
| 234 | CR_R_RXSTOP = 0x00008000, /* rx stopped (name?) */ |
| 235 | }; |
| 236 | |
| 237 | /* The Tulip Rx and Tx buffer descriptors. */ |
| 238 | struct fealnx_desc { |
| 239 | s32 status; |
| 240 | s32 control; |
| 241 | u32 buffer; |
| 242 | u32 next_desc; |
| 243 | struct fealnx_desc *next_desc_logical; |
| 244 | struct sk_buff *skbuff; |
| 245 | u32 reserved1; |
| 246 | u32 reserved2; |
| 247 | }; |
| 248 | |
| 249 | /* Bits in network_desc.status */ |
| 250 | enum rx_desc_status_bits { |
| 251 | RXOWN = 0x80000000, /* own bit */ |
| 252 | FLNGMASK = 0x0fff0000, /* frame length */ |
| 253 | FLNGShift = 16, |
| 254 | MARSTATUS = 0x00004000, /* multicast address received */ |
| 255 | BARSTATUS = 0x00002000, /* broadcast address received */ |
| 256 | PHYSTATUS = 0x00001000, /* physical address received */ |
| 257 | RXFSD = 0x00000800, /* first descriptor */ |
| 258 | RXLSD = 0x00000400, /* last descriptor */ |
| 259 | ErrorSummary = 0x80, /* error summary */ |
| 260 | RUNT = 0x40, /* runt packet received */ |
| 261 | LONG = 0x20, /* long packet received */ |
| 262 | FAE = 0x10, /* frame align error */ |
| 263 | CRC = 0x08, /* crc error */ |
| 264 | RXER = 0x04, /* receive error */ |
| 265 | }; |
| 266 | |
| 267 | enum rx_desc_control_bits { |
| 268 | RXIC = 0x00800000, /* interrupt control */ |
| 269 | RBSShift = 0, |
| 270 | }; |
| 271 | |
| 272 | enum tx_desc_status_bits { |
| 273 | TXOWN = 0x80000000, /* own bit */ |
| 274 | JABTO = 0x00004000, /* jabber timeout */ |
| 275 | CSL = 0x00002000, /* carrier sense lost */ |
| 276 | LC = 0x00001000, /* late collision */ |
| 277 | EC = 0x00000800, /* excessive collision */ |
| 278 | UDF = 0x00000400, /* fifo underflow */ |
| 279 | DFR = 0x00000200, /* deferred */ |
| 280 | HF = 0x00000100, /* heartbeat fail */ |
| 281 | NCRMask = 0x000000ff, /* collision retry count */ |
| 282 | NCRShift = 0, |
| 283 | }; |
| 284 | |
| 285 | enum tx_desc_control_bits { |
| 286 | TXIC = 0x80000000, /* interrupt control */ |
| 287 | ETIControl = 0x40000000, /* early transmit interrupt */ |
| 288 | TXLD = 0x20000000, /* last descriptor */ |
| 289 | TXFD = 0x10000000, /* first descriptor */ |
| 290 | CRCEnable = 0x08000000, /* crc control */ |
| 291 | PADEnable = 0x04000000, /* padding control */ |
| 292 | RetryTxLC = 0x02000000, /* retry late collision */ |
| 293 | PKTSMask = 0x3ff800, /* packet size bit21-11 */ |
| 294 | PKTSShift = 11, |
| 295 | TBSMask = 0x000007ff, /* transmit buffer bit 10-0 */ |
| 296 | TBSShift = 0, |
| 297 | }; |
| 298 | |
| 299 | /* BootROM/EEPROM/MII Management Register */ |
| 300 | #define MASK_MIIR_MII_READ 0x00000000 |
| 301 | #define MASK_MIIR_MII_WRITE 0x00000008 |
| 302 | #define MASK_MIIR_MII_MDO 0x00000004 |
| 303 | #define MASK_MIIR_MII_MDI 0x00000002 |
| 304 | #define MASK_MIIR_MII_MDC 0x00000001 |
| 305 | |
| 306 | /* ST+OP+PHYAD+REGAD+TA */ |
| 307 | #define OP_READ 0x6000 /* ST:01+OP:10+PHYAD+REGAD+TA:Z0 */ |
| 308 | #define OP_WRITE 0x5002 /* ST:01+OP:01+PHYAD+REGAD+TA:10 */ |
| 309 | |
| 310 | /* ------------------------------------------------------------------------- */ |
| 311 | /* Constants for Myson PHY */ |
| 312 | /* ------------------------------------------------------------------------- */ |
| 313 | #define MysonPHYID 0xd0000302 |
| 314 | /* 89-7-27 add, (begin) */ |
| 315 | #define MysonPHYID0 0x0302 |
| 316 | #define StatusRegister 18 |
| 317 | #define SPEED100 0x0400 // bit10 |
| 318 | #define FULLMODE 0x0800 // bit11 |
| 319 | /* 89-7-27 add, (end) */ |
| 320 | |
| 321 | /* ------------------------------------------------------------------------- */ |
| 322 | /* Constants for Seeq 80225 PHY */ |
| 323 | /* ------------------------------------------------------------------------- */ |
| 324 | #define SeeqPHYID0 0x0016 |
| 325 | |
| 326 | #define MIIRegister18 18 |
| 327 | #define SPD_DET_100 0x80 |
| 328 | #define DPLX_DET_FULL 0x40 |
| 329 | |
| 330 | /* ------------------------------------------------------------------------- */ |
| 331 | /* Constants for Ahdoc 101 PHY */ |
| 332 | /* ------------------------------------------------------------------------- */ |
| 333 | #define AhdocPHYID0 0x0022 |
| 334 | |
| 335 | #define DiagnosticReg 18 |
| 336 | #define DPLX_FULL 0x0800 |
| 337 | #define Speed_100 0x0400 |
| 338 | |
| 339 | /* 89/6/13 add, */ |
| 340 | /* -------------------------------------------------------------------------- */ |
| 341 | /* Constants */ |
| 342 | /* -------------------------------------------------------------------------- */ |
| 343 | #define MarvellPHYID0 0x0141 |
| 344 | #define LevelOnePHYID0 0x0013 |
| 345 | |
| 346 | #define MII1000BaseTControlReg 9 |
| 347 | #define MII1000BaseTStatusReg 10 |
| 348 | #define SpecificReg 17 |
| 349 | |
| 350 | /* for 1000BaseT Control Register */ |
| 351 | #define PHYAbletoPerform1000FullDuplex 0x0200 |
| 352 | #define PHYAbletoPerform1000HalfDuplex 0x0100 |
| 353 | #define PHY1000AbilityMask 0x300 |
| 354 | |
| 355 | // for phy specific status register, marvell phy. |
| 356 | #define SpeedMask 0x0c000 |
| 357 | #define Speed_1000M 0x08000 |
| 358 | #define Speed_100M 0x4000 |
| 359 | #define Speed_10M 0 |
| 360 | #define Full_Duplex 0x2000 |
| 361 | |
| 362 | // 89/12/29 add, for phy specific status register, levelone phy, (begin) |
| 363 | #define LXT1000_100M 0x08000 |
| 364 | #define LXT1000_1000M 0x0c000 |
| 365 | #define LXT1000_Full 0x200 |
| 366 | // 89/12/29 add, for phy specific status register, levelone phy, (end) |
| 367 | |
| 368 | /* for 3-in-1 case, BMCRSR register */ |
| 369 | #define LinkIsUp2 0x00040000 |
| 370 | |
| 371 | /* for PHY */ |
| 372 | #define LinkIsUp 0x0004 |
| 373 | |
| 374 | |
| 375 | struct netdev_private { |
| 376 | /* Descriptor rings first for alignment. */ |
| 377 | struct fealnx_desc *rx_ring; |
| 378 | struct fealnx_desc *tx_ring; |
| 379 | |
| 380 | dma_addr_t rx_ring_dma; |
| 381 | dma_addr_t tx_ring_dma; |
| 382 | |
| 383 | spinlock_t lock; |
| 384 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 385 | /* Media monitoring timer. */ |
| 386 | struct timer_list timer; |
| 387 | |
| 388 | /* Reset timer */ |
| 389 | struct timer_list reset_timer; |
| 390 | int reset_timer_armed; |
| 391 | unsigned long crvalue_sv; |
| 392 | unsigned long imrvalue_sv; |
| 393 | |
| 394 | /* Frequently used values: keep some adjacent for cache effect. */ |
| 395 | int flags; |
| 396 | struct pci_dev *pci_dev; |
| 397 | unsigned long crvalue; |
| 398 | unsigned long bcrvalue; |
| 399 | unsigned long imrvalue; |
| 400 | struct fealnx_desc *cur_rx; |
| 401 | struct fealnx_desc *lack_rxbuf; |
| 402 | int really_rx_count; |
| 403 | struct fealnx_desc *cur_tx; |
| 404 | struct fealnx_desc *cur_tx_copy; |
| 405 | int really_tx_count; |
| 406 | int free_tx_count; |
| 407 | unsigned int rx_buf_sz; /* Based on MTU+slack. */ |
| 408 | |
| 409 | /* These values are keep track of the transceiver/media in use. */ |
| 410 | unsigned int linkok; |
| 411 | unsigned int line_speed; |
| 412 | unsigned int duplexmode; |
| 413 | unsigned int default_port:4; /* Last dev->if_port value. */ |
| 414 | unsigned int PHYType; |
| 415 | |
| 416 | /* MII transceiver section. */ |
| 417 | int mii_cnt; /* MII device addresses. */ |
| 418 | unsigned char phys[2]; /* MII device addresses. */ |
| 419 | struct mii_if_info mii; |
| 420 | void __iomem *mem; |
| 421 | }; |
| 422 | |
| 423 | |
| 424 | static int mdio_read(struct net_device *dev, int phy_id, int location); |
| 425 | static void mdio_write(struct net_device *dev, int phy_id, int location, int value); |
| 426 | static int netdev_open(struct net_device *dev); |
| 427 | static void getlinktype(struct net_device *dev); |
| 428 | static void getlinkstatus(struct net_device *dev); |
| 429 | static void netdev_timer(unsigned long data); |
| 430 | static void reset_timer(unsigned long data); |
Arjan van de Ven | ed4cb13 | 2008-10-05 07:35:05 +0000 | [diff] [blame] | 431 | static void fealnx_tx_timeout(struct net_device *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 432 | static void init_ring(struct net_device *dev); |
Stephen Hemminger | 61357325 | 2009-08-31 19:50:58 +0000 | [diff] [blame] | 433 | static netdev_tx_t start_tx(struct sk_buff *skb, struct net_device *dev); |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 434 | static irqreturn_t intr_handler(int irq, void *dev_instance); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 435 | static int netdev_rx(struct net_device *dev); |
| 436 | static void set_rx_mode(struct net_device *dev); |
| 437 | static void __set_rx_mode(struct net_device *dev); |
| 438 | static struct net_device_stats *get_stats(struct net_device *dev); |
| 439 | static int mii_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); |
Jeff Garzik | 7282d49 | 2006-09-13 14:30:00 -0400 | [diff] [blame] | 440 | static const struct ethtool_ops netdev_ethtool_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 441 | static int netdev_close(struct net_device *dev); |
| 442 | static void reset_rx_descriptors(struct net_device *dev); |
| 443 | static void reset_tx_descriptors(struct net_device *dev); |
| 444 | |
| 445 | static void stop_nic_rx(void __iomem *ioaddr, long crvalue) |
| 446 | { |
| 447 | int delay = 0x1000; |
| 448 | iowrite32(crvalue & ~(CR_W_RXEN), ioaddr + TCRRCR); |
| 449 | while (--delay) { |
| 450 | if ( (ioread32(ioaddr + TCRRCR) & CR_R_RXSTOP) == CR_R_RXSTOP) |
| 451 | break; |
| 452 | } |
| 453 | } |
| 454 | |
| 455 | |
| 456 | static void stop_nic_rxtx(void __iomem *ioaddr, long crvalue) |
| 457 | { |
| 458 | int delay = 0x1000; |
| 459 | iowrite32(crvalue & ~(CR_W_RXEN+CR_W_TXEN), ioaddr + TCRRCR); |
| 460 | while (--delay) { |
| 461 | if ( (ioread32(ioaddr + TCRRCR) & (CR_R_RXSTOP+CR_R_TXSTOP)) |
| 462 | == (CR_R_RXSTOP+CR_R_TXSTOP) ) |
| 463 | break; |
| 464 | } |
| 465 | } |
| 466 | |
Stephen Hemminger | e287157 | 2009-01-07 17:57:47 -0800 | [diff] [blame] | 467 | static const struct net_device_ops netdev_ops = { |
| 468 | .ndo_open = netdev_open, |
| 469 | .ndo_stop = netdev_close, |
| 470 | .ndo_start_xmit = start_tx, |
| 471 | .ndo_get_stats = get_stats, |
Jiri Pirko | afc4b13 | 2011-08-16 06:29:01 +0000 | [diff] [blame] | 472 | .ndo_set_rx_mode = set_rx_mode, |
Stephen Hemminger | e287157 | 2009-01-07 17:57:47 -0800 | [diff] [blame] | 473 | .ndo_do_ioctl = mii_ioctl, |
| 474 | .ndo_tx_timeout = fealnx_tx_timeout, |
| 475 | .ndo_change_mtu = eth_change_mtu, |
| 476 | .ndo_set_mac_address = eth_mac_addr, |
| 477 | .ndo_validate_addr = eth_validate_addr, |
| 478 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 479 | |
Bill Pemberton | a0a4efe | 2012-12-03 09:24:09 -0500 | [diff] [blame] | 480 | static int fealnx_init_one(struct pci_dev *pdev, |
Greg Kroah-Hartman | 1dd06ae | 2012-12-06 14:30:56 +0000 | [diff] [blame] | 481 | const struct pci_device_id *ent) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 482 | { |
| 483 | struct netdev_private *np; |
| 484 | int i, option, err, irq; |
| 485 | static int card_idx = -1; |
| 486 | char boardname[12]; |
| 487 | void __iomem *ioaddr; |
| 488 | unsigned long len; |
| 489 | unsigned int chip_id = ent->driver_data; |
| 490 | struct net_device *dev; |
| 491 | void *ring_space; |
| 492 | dma_addr_t ring_dma; |
| 493 | #ifdef USE_IO_OPS |
| 494 | int bar = 0; |
| 495 | #else |
| 496 | int bar = 1; |
| 497 | #endif |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 498 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 499 | /* when built into the kernel, we only print version if device is found */ |
| 500 | #ifndef MODULE |
| 501 | static int printed_version; |
| 502 | if (!printed_version++) |
| 503 | printk(version); |
| 504 | #endif |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 505 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 506 | card_idx++; |
| 507 | sprintf(boardname, "fealnx%d", card_idx); |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 508 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 509 | option = card_idx < MAX_UNITS ? options[card_idx] : 0; |
| 510 | |
| 511 | i = pci_enable_device(pdev); |
| 512 | if (i) return i; |
| 513 | pci_set_master(pdev); |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 514 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 515 | len = pci_resource_len(pdev, bar); |
| 516 | if (len < MIN_REGION_SIZE) { |
Jeff Garzik | 9b91cf9 | 2006-06-27 11:39:50 -0400 | [diff] [blame] | 517 | dev_err(&pdev->dev, |
Jeff Garzik | 46009c8 | 2006-06-27 09:12:38 -0400 | [diff] [blame] | 518 | "region size %ld too small, aborting\n", len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 519 | return -ENODEV; |
| 520 | } |
| 521 | |
| 522 | i = pci_request_regions(pdev, boardname); |
Jeff Garzik | 46009c8 | 2006-06-27 09:12:38 -0400 | [diff] [blame] | 523 | if (i) |
| 524 | return i; |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 525 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 526 | irq = pdev->irq; |
| 527 | |
| 528 | ioaddr = pci_iomap(pdev, bar, len); |
| 529 | if (!ioaddr) { |
| 530 | err = -ENOMEM; |
| 531 | goto err_out_res; |
| 532 | } |
| 533 | |
| 534 | dev = alloc_etherdev(sizeof(struct netdev_private)); |
| 535 | if (!dev) { |
| 536 | err = -ENOMEM; |
| 537 | goto err_out_unmap; |
| 538 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 539 | SET_NETDEV_DEV(dev, &pdev->dev); |
| 540 | |
| 541 | /* read ethernet id */ |
| 542 | for (i = 0; i < 6; ++i) |
| 543 | dev->dev_addr[i] = ioread8(ioaddr + PAR0 + i); |
| 544 | |
| 545 | /* Reset the chip to erase previous misconfiguration. */ |
| 546 | iowrite32(0x00000001, ioaddr + BCR); |
| 547 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 548 | /* Make certain the descriptor lists are aligned. */ |
| 549 | np = netdev_priv(dev); |
| 550 | np->mem = ioaddr; |
| 551 | spin_lock_init(&np->lock); |
| 552 | np->pci_dev = pdev; |
| 553 | np->flags = skel_netdrv_tbl[chip_id].flags; |
| 554 | pci_set_drvdata(pdev, dev); |
| 555 | np->mii.dev = dev; |
| 556 | np->mii.mdio_read = mdio_read; |
| 557 | np->mii.mdio_write = mdio_write; |
| 558 | np->mii.phy_id_mask = 0x1f; |
| 559 | np->mii.reg_num_mask = 0x1f; |
| 560 | |
| 561 | ring_space = pci_alloc_consistent(pdev, RX_TOTAL_SIZE, &ring_dma); |
| 562 | if (!ring_space) { |
| 563 | err = -ENOMEM; |
| 564 | goto err_out_free_dev; |
| 565 | } |
Joe Perches | 43d620c | 2011-06-16 19:08:06 +0000 | [diff] [blame] | 566 | np->rx_ring = ring_space; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 567 | np->rx_ring_dma = ring_dma; |
| 568 | |
| 569 | ring_space = pci_alloc_consistent(pdev, TX_TOTAL_SIZE, &ring_dma); |
| 570 | if (!ring_space) { |
| 571 | err = -ENOMEM; |
| 572 | goto err_out_free_rx; |
| 573 | } |
Joe Perches | 43d620c | 2011-06-16 19:08:06 +0000 | [diff] [blame] | 574 | np->tx_ring = ring_space; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 575 | np->tx_ring_dma = ring_dma; |
| 576 | |
| 577 | /* find the connected MII xcvrs */ |
| 578 | if (np->flags == HAS_MII_XCVR) { |
| 579 | int phy, phy_idx = 0; |
| 580 | |
roel kluin | f83284f | 2009-07-25 07:41:12 +0000 | [diff] [blame] | 581 | for (phy = 1; phy < 32 && phy_idx < ARRAY_SIZE(np->phys); |
| 582 | phy++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 583 | int mii_status = mdio_read(dev, phy, 1); |
| 584 | |
| 585 | if (mii_status != 0xffff && mii_status != 0x0000) { |
| 586 | np->phys[phy_idx++] = phy; |
Jeff Garzik | 9b91cf9 | 2006-06-27 11:39:50 -0400 | [diff] [blame] | 587 | dev_info(&pdev->dev, |
Jeff Garzik | 2e8a538 | 2006-06-27 10:47:51 -0400 | [diff] [blame] | 588 | "MII PHY found at address %d, status " |
| 589 | "0x%4.4x.\n", phy, mii_status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 590 | /* get phy type */ |
| 591 | { |
| 592 | unsigned int data; |
| 593 | |
| 594 | data = mdio_read(dev, np->phys[0], 2); |
| 595 | if (data == SeeqPHYID0) |
| 596 | np->PHYType = SeeqPHY; |
| 597 | else if (data == AhdocPHYID0) |
| 598 | np->PHYType = AhdocPHY; |
| 599 | else if (data == MarvellPHYID0) |
| 600 | np->PHYType = MarvellPHY; |
| 601 | else if (data == MysonPHYID0) |
| 602 | np->PHYType = Myson981; |
| 603 | else if (data == LevelOnePHYID0) |
| 604 | np->PHYType = LevelOnePHY; |
| 605 | else |
| 606 | np->PHYType = OtherPHY; |
| 607 | } |
| 608 | } |
| 609 | } |
| 610 | |
| 611 | np->mii_cnt = phy_idx; |
Jeff Garzik | 2e8a538 | 2006-06-27 10:47:51 -0400 | [diff] [blame] | 612 | if (phy_idx == 0) |
Jeff Garzik | 9b91cf9 | 2006-06-27 11:39:50 -0400 | [diff] [blame] | 613 | dev_warn(&pdev->dev, |
Jeff Garzik | 2e8a538 | 2006-06-27 10:47:51 -0400 | [diff] [blame] | 614 | "MII PHY not found -- this device may " |
| 615 | "not operate correctly.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 616 | } else { |
| 617 | np->phys[0] = 32; |
| 618 | /* 89/6/23 add, (begin) */ |
| 619 | /* get phy type */ |
| 620 | if (ioread32(ioaddr + PHYIDENTIFIER) == MysonPHYID) |
| 621 | np->PHYType = MysonPHY; |
| 622 | else |
| 623 | np->PHYType = OtherPHY; |
| 624 | } |
| 625 | np->mii.phy_id = np->phys[0]; |
| 626 | |
| 627 | if (dev->mem_start) |
| 628 | option = dev->mem_start; |
| 629 | |
| 630 | /* The lower four bits are the media type. */ |
| 631 | if (option > 0) { |
| 632 | if (option & 0x200) |
| 633 | np->mii.full_duplex = 1; |
| 634 | np->default_port = option & 15; |
| 635 | } |
| 636 | |
| 637 | if (card_idx < MAX_UNITS && full_duplex[card_idx] > 0) |
| 638 | np->mii.full_duplex = full_duplex[card_idx]; |
| 639 | |
| 640 | if (np->mii.full_duplex) { |
Jeff Garzik | 9b91cf9 | 2006-06-27 11:39:50 -0400 | [diff] [blame] | 641 | dev_info(&pdev->dev, "Media type forced to Full Duplex.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 642 | /* 89/6/13 add, (begin) */ |
| 643 | // if (np->PHYType==MarvellPHY) |
| 644 | if ((np->PHYType == MarvellPHY) || (np->PHYType == LevelOnePHY)) { |
| 645 | unsigned int data; |
| 646 | |
| 647 | data = mdio_read(dev, np->phys[0], 9); |
| 648 | data = (data & 0xfcff) | 0x0200; |
| 649 | mdio_write(dev, np->phys[0], 9, data); |
| 650 | } |
| 651 | /* 89/6/13 add, (end) */ |
| 652 | if (np->flags == HAS_MII_XCVR) |
| 653 | mdio_write(dev, np->phys[0], MII_ADVERTISE, ADVERTISE_FULL); |
| 654 | else |
| 655 | iowrite32(ADVERTISE_FULL, ioaddr + ANARANLPAR); |
| 656 | np->mii.force_media = 1; |
| 657 | } |
| 658 | |
Stephen Hemminger | e287157 | 2009-01-07 17:57:47 -0800 | [diff] [blame] | 659 | dev->netdev_ops = &netdev_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 660 | dev->ethtool_ops = &netdev_ethtool_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 661 | dev->watchdog_timeo = TX_TIMEOUT; |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 662 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 663 | err = register_netdev(dev); |
| 664 | if (err) |
| 665 | goto err_out_free_tx; |
| 666 | |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 667 | printk(KERN_INFO "%s: %s at %p, %pM, IRQ %d.\n", |
Joe Perches | 0795af5 | 2007-10-03 17:59:30 -0700 | [diff] [blame] | 668 | dev->name, skel_netdrv_tbl[chip_id].chip_name, ioaddr, |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 669 | dev->dev_addr, irq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 670 | |
| 671 | return 0; |
| 672 | |
| 673 | err_out_free_tx: |
| 674 | pci_free_consistent(pdev, TX_TOTAL_SIZE, np->tx_ring, np->tx_ring_dma); |
| 675 | err_out_free_rx: |
| 676 | pci_free_consistent(pdev, RX_TOTAL_SIZE, np->rx_ring, np->rx_ring_dma); |
| 677 | err_out_free_dev: |
| 678 | free_netdev(dev); |
| 679 | err_out_unmap: |
| 680 | pci_iounmap(pdev, ioaddr); |
| 681 | err_out_res: |
| 682 | pci_release_regions(pdev); |
| 683 | return err; |
| 684 | } |
| 685 | |
| 686 | |
Bill Pemberton | a0a4efe | 2012-12-03 09:24:09 -0500 | [diff] [blame] | 687 | static void fealnx_remove_one(struct pci_dev *pdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 688 | { |
| 689 | struct net_device *dev = pci_get_drvdata(pdev); |
| 690 | |
| 691 | if (dev) { |
| 692 | struct netdev_private *np = netdev_priv(dev); |
| 693 | |
| 694 | pci_free_consistent(pdev, TX_TOTAL_SIZE, np->tx_ring, |
| 695 | np->tx_ring_dma); |
| 696 | pci_free_consistent(pdev, RX_TOTAL_SIZE, np->rx_ring, |
| 697 | np->rx_ring_dma); |
| 698 | unregister_netdev(dev); |
| 699 | pci_iounmap(pdev, np->mem); |
| 700 | free_netdev(dev); |
| 701 | pci_release_regions(pdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 702 | } else |
| 703 | printk(KERN_ERR "fealnx: remove for unknown device\n"); |
| 704 | } |
| 705 | |
| 706 | |
| 707 | static ulong m80x_send_cmd_to_phy(void __iomem *miiport, int opcode, int phyad, int regad) |
| 708 | { |
| 709 | ulong miir; |
| 710 | int i; |
| 711 | unsigned int mask, data; |
| 712 | |
| 713 | /* enable MII output */ |
| 714 | miir = (ulong) ioread32(miiport); |
| 715 | miir &= 0xfffffff0; |
| 716 | |
| 717 | miir |= MASK_MIIR_MII_WRITE + MASK_MIIR_MII_MDO; |
| 718 | |
| 719 | /* send 32 1's preamble */ |
| 720 | for (i = 0; i < 32; i++) { |
| 721 | /* low MDC; MDO is already high (miir) */ |
| 722 | miir &= ~MASK_MIIR_MII_MDC; |
| 723 | iowrite32(miir, miiport); |
| 724 | |
| 725 | /* high MDC */ |
| 726 | miir |= MASK_MIIR_MII_MDC; |
| 727 | iowrite32(miir, miiport); |
| 728 | } |
| 729 | |
| 730 | /* calculate ST+OP+PHYAD+REGAD+TA */ |
| 731 | data = opcode | (phyad << 7) | (regad << 2); |
| 732 | |
| 733 | /* sent out */ |
| 734 | mask = 0x8000; |
| 735 | while (mask) { |
| 736 | /* low MDC, prepare MDO */ |
| 737 | miir &= ~(MASK_MIIR_MII_MDC + MASK_MIIR_MII_MDO); |
| 738 | if (mask & data) |
| 739 | miir |= MASK_MIIR_MII_MDO; |
| 740 | |
| 741 | iowrite32(miir, miiport); |
| 742 | /* high MDC */ |
| 743 | miir |= MASK_MIIR_MII_MDC; |
| 744 | iowrite32(miir, miiport); |
| 745 | udelay(30); |
| 746 | |
| 747 | /* next */ |
| 748 | mask >>= 1; |
| 749 | if (mask == 0x2 && opcode == OP_READ) |
| 750 | miir &= ~MASK_MIIR_MII_WRITE; |
| 751 | } |
| 752 | return miir; |
| 753 | } |
| 754 | |
| 755 | |
| 756 | static int mdio_read(struct net_device *dev, int phyad, int regad) |
| 757 | { |
| 758 | struct netdev_private *np = netdev_priv(dev); |
| 759 | void __iomem *miiport = np->mem + MANAGEMENT; |
| 760 | ulong miir; |
| 761 | unsigned int mask, data; |
| 762 | |
| 763 | miir = m80x_send_cmd_to_phy(miiport, OP_READ, phyad, regad); |
| 764 | |
| 765 | /* read data */ |
| 766 | mask = 0x8000; |
| 767 | data = 0; |
| 768 | while (mask) { |
| 769 | /* low MDC */ |
| 770 | miir &= ~MASK_MIIR_MII_MDC; |
| 771 | iowrite32(miir, miiport); |
| 772 | |
| 773 | /* read MDI */ |
| 774 | miir = ioread32(miiport); |
| 775 | if (miir & MASK_MIIR_MII_MDI) |
| 776 | data |= mask; |
| 777 | |
| 778 | /* high MDC, and wait */ |
| 779 | miir |= MASK_MIIR_MII_MDC; |
| 780 | iowrite32(miir, miiport); |
| 781 | udelay(30); |
| 782 | |
| 783 | /* next */ |
| 784 | mask >>= 1; |
| 785 | } |
| 786 | |
| 787 | /* low MDC */ |
| 788 | miir &= ~MASK_MIIR_MII_MDC; |
| 789 | iowrite32(miir, miiport); |
| 790 | |
| 791 | return data & 0xffff; |
| 792 | } |
| 793 | |
| 794 | |
| 795 | static void mdio_write(struct net_device *dev, int phyad, int regad, int data) |
| 796 | { |
| 797 | struct netdev_private *np = netdev_priv(dev); |
| 798 | void __iomem *miiport = np->mem + MANAGEMENT; |
| 799 | ulong miir; |
| 800 | unsigned int mask; |
| 801 | |
| 802 | miir = m80x_send_cmd_to_phy(miiport, OP_WRITE, phyad, regad); |
| 803 | |
| 804 | /* write data */ |
| 805 | mask = 0x8000; |
| 806 | while (mask) { |
| 807 | /* low MDC, prepare MDO */ |
| 808 | miir &= ~(MASK_MIIR_MII_MDC + MASK_MIIR_MII_MDO); |
| 809 | if (mask & data) |
| 810 | miir |= MASK_MIIR_MII_MDO; |
| 811 | iowrite32(miir, miiport); |
| 812 | |
| 813 | /* high MDC */ |
| 814 | miir |= MASK_MIIR_MII_MDC; |
| 815 | iowrite32(miir, miiport); |
| 816 | |
| 817 | /* next */ |
| 818 | mask >>= 1; |
| 819 | } |
| 820 | |
| 821 | /* low MDC */ |
| 822 | miir &= ~MASK_MIIR_MII_MDC; |
| 823 | iowrite32(miir, miiport); |
| 824 | } |
| 825 | |
| 826 | |
| 827 | static int netdev_open(struct net_device *dev) |
| 828 | { |
| 829 | struct netdev_private *np = netdev_priv(dev); |
| 830 | void __iomem *ioaddr = np->mem; |
Francois Romieu | 436dfc4 | 2012-03-09 15:35:40 +0100 | [diff] [blame] | 831 | const int irq = np->pci_dev->irq; |
| 832 | int rc, i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 833 | |
| 834 | iowrite32(0x00000001, ioaddr + BCR); /* Reset */ |
| 835 | |
Francois Romieu | 436dfc4 | 2012-03-09 15:35:40 +0100 | [diff] [blame] | 836 | rc = request_irq(irq, intr_handler, IRQF_SHARED, dev->name, dev); |
| 837 | if (rc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 838 | return -EAGAIN; |
| 839 | |
| 840 | for (i = 0; i < 3; i++) |
| 841 | iowrite16(((unsigned short*)dev->dev_addr)[i], |
| 842 | ioaddr + PAR0 + i*2); |
| 843 | |
| 844 | init_ring(dev); |
| 845 | |
| 846 | iowrite32(np->rx_ring_dma, ioaddr + RXLBA); |
| 847 | iowrite32(np->tx_ring_dma, ioaddr + TXLBA); |
| 848 | |
| 849 | /* Initialize other registers. */ |
| 850 | /* Configure the PCI bus bursts and FIFO thresholds. |
| 851 | 486: Set 8 longword burst. |
| 852 | 586: no burst limit. |
| 853 | Burst length 5:3 |
| 854 | 0 0 0 1 |
| 855 | 0 0 1 4 |
| 856 | 0 1 0 8 |
| 857 | 0 1 1 16 |
| 858 | 1 0 0 32 |
| 859 | 1 0 1 64 |
| 860 | 1 1 0 128 |
| 861 | 1 1 1 256 |
| 862 | Wait the specified 50 PCI cycles after a reset by initializing |
| 863 | Tx and Rx queues and the address filter list. |
| 864 | FIXME (Ueimor): optimistic for alpha + posted writes ? */ |
Jeff Garzik | 28cd428 | 2008-06-27 02:18:50 -0400 | [diff] [blame] | 865 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 866 | np->bcrvalue = 0x10; /* little-endian, 8 burst length */ |
Jeff Garzik | 28cd428 | 2008-06-27 02:18:50 -0400 | [diff] [blame] | 867 | #ifdef __BIG_ENDIAN |
| 868 | np->bcrvalue |= 0x04; /* big-endian */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 869 | #endif |
Jeff Garzik | 28cd428 | 2008-06-27 02:18:50 -0400 | [diff] [blame] | 870 | |
| 871 | #if defined(__i386__) && !defined(MODULE) |
| 872 | if (boot_cpu_data.x86 <= 4) |
| 873 | np->crvalue = 0xa00; |
| 874 | else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 875 | #endif |
Jeff Garzik | 28cd428 | 2008-06-27 02:18:50 -0400 | [diff] [blame] | 876 | np->crvalue = 0xe00; /* rx 128 burst length */ |
| 877 | |
| 878 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 879 | // 89/12/29 add, |
| 880 | // 90/1/16 modify, |
| 881 | // np->imrvalue=FBE|TUNF|CNTOVF|RBU|TI|RI; |
| 882 | np->imrvalue = TUNF | CNTOVF | RBU | TI | RI; |
| 883 | if (np->pci_dev->device == 0x891) { |
| 884 | np->bcrvalue |= 0x200; /* set PROG bit */ |
| 885 | np->crvalue |= CR_W_ENH; /* set enhanced bit */ |
| 886 | np->imrvalue |= ETI; |
| 887 | } |
| 888 | iowrite32(np->bcrvalue, ioaddr + BCR); |
| 889 | |
| 890 | if (dev->if_port == 0) |
| 891 | dev->if_port = np->default_port; |
| 892 | |
| 893 | iowrite32(0, ioaddr + RXPDR); |
| 894 | // 89/9/1 modify, |
| 895 | // np->crvalue = 0x00e40001; /* tx store and forward, tx/rx enable */ |
| 896 | np->crvalue |= 0x00e40001; /* tx store and forward, tx/rx enable */ |
| 897 | np->mii.full_duplex = np->mii.force_media; |
| 898 | getlinkstatus(dev); |
| 899 | if (np->linkok) |
| 900 | getlinktype(dev); |
| 901 | __set_rx_mode(dev); |
| 902 | |
| 903 | netif_start_queue(dev); |
| 904 | |
| 905 | /* Clear and Enable interrupts by setting the interrupt mask. */ |
| 906 | iowrite32(FBE | TUNF | CNTOVF | RBU | TI | RI, ioaddr + ISR); |
| 907 | iowrite32(np->imrvalue, ioaddr + IMR); |
| 908 | |
| 909 | if (debug) |
| 910 | printk(KERN_DEBUG "%s: Done netdev_open().\n", dev->name); |
| 911 | |
| 912 | /* Set the timer to check for link beat. */ |
| 913 | init_timer(&np->timer); |
| 914 | np->timer.expires = RUN_AT(3 * HZ); |
| 915 | np->timer.data = (unsigned long) dev; |
Joe Perches | c061b18 | 2010-08-23 18:20:03 +0000 | [diff] [blame] | 916 | np->timer.function = netdev_timer; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 917 | |
| 918 | /* timer handler */ |
| 919 | add_timer(&np->timer); |
| 920 | |
| 921 | init_timer(&np->reset_timer); |
| 922 | np->reset_timer.data = (unsigned long) dev; |
Joe Perches | c061b18 | 2010-08-23 18:20:03 +0000 | [diff] [blame] | 923 | np->reset_timer.function = reset_timer; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 924 | np->reset_timer_armed = 0; |
Francois Romieu | 436dfc4 | 2012-03-09 15:35:40 +0100 | [diff] [blame] | 925 | return rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 926 | } |
| 927 | |
| 928 | |
| 929 | static void getlinkstatus(struct net_device *dev) |
| 930 | /* function: Routine will read MII Status Register to get link status. */ |
| 931 | /* input : dev... pointer to the adapter block. */ |
| 932 | /* output : none. */ |
| 933 | { |
| 934 | struct netdev_private *np = netdev_priv(dev); |
| 935 | unsigned int i, DelayTime = 0x1000; |
| 936 | |
| 937 | np->linkok = 0; |
| 938 | |
| 939 | if (np->PHYType == MysonPHY) { |
| 940 | for (i = 0; i < DelayTime; ++i) { |
| 941 | if (ioread32(np->mem + BMCRSR) & LinkIsUp2) { |
| 942 | np->linkok = 1; |
| 943 | return; |
| 944 | } |
| 945 | udelay(100); |
| 946 | } |
| 947 | } else { |
| 948 | for (i = 0; i < DelayTime; ++i) { |
| 949 | if (mdio_read(dev, np->phys[0], MII_BMSR) & BMSR_LSTATUS) { |
| 950 | np->linkok = 1; |
| 951 | return; |
| 952 | } |
| 953 | udelay(100); |
| 954 | } |
| 955 | } |
| 956 | } |
| 957 | |
| 958 | |
| 959 | static void getlinktype(struct net_device *dev) |
| 960 | { |
| 961 | struct netdev_private *np = netdev_priv(dev); |
| 962 | |
| 963 | if (np->PHYType == MysonPHY) { /* 3-in-1 case */ |
| 964 | if (ioread32(np->mem + TCRRCR) & CR_R_FD) |
| 965 | np->duplexmode = 2; /* full duplex */ |
| 966 | else |
| 967 | np->duplexmode = 1; /* half duplex */ |
| 968 | if (ioread32(np->mem + TCRRCR) & CR_R_PS10) |
| 969 | np->line_speed = 1; /* 10M */ |
| 970 | else |
| 971 | np->line_speed = 2; /* 100M */ |
| 972 | } else { |
| 973 | if (np->PHYType == SeeqPHY) { /* this PHY is SEEQ 80225 */ |
| 974 | unsigned int data; |
| 975 | |
| 976 | data = mdio_read(dev, np->phys[0], MIIRegister18); |
| 977 | if (data & SPD_DET_100) |
| 978 | np->line_speed = 2; /* 100M */ |
| 979 | else |
| 980 | np->line_speed = 1; /* 10M */ |
| 981 | if (data & DPLX_DET_FULL) |
| 982 | np->duplexmode = 2; /* full duplex mode */ |
| 983 | else |
| 984 | np->duplexmode = 1; /* half duplex mode */ |
| 985 | } else if (np->PHYType == AhdocPHY) { |
| 986 | unsigned int data; |
| 987 | |
| 988 | data = mdio_read(dev, np->phys[0], DiagnosticReg); |
| 989 | if (data & Speed_100) |
| 990 | np->line_speed = 2; /* 100M */ |
| 991 | else |
| 992 | np->line_speed = 1; /* 10M */ |
| 993 | if (data & DPLX_FULL) |
| 994 | np->duplexmode = 2; /* full duplex mode */ |
| 995 | else |
| 996 | np->duplexmode = 1; /* half duplex mode */ |
| 997 | } |
| 998 | /* 89/6/13 add, (begin) */ |
| 999 | else if (np->PHYType == MarvellPHY) { |
| 1000 | unsigned int data; |
| 1001 | |
| 1002 | data = mdio_read(dev, np->phys[0], SpecificReg); |
| 1003 | if (data & Full_Duplex) |
| 1004 | np->duplexmode = 2; /* full duplex mode */ |
| 1005 | else |
| 1006 | np->duplexmode = 1; /* half duplex mode */ |
| 1007 | data &= SpeedMask; |
| 1008 | if (data == Speed_1000M) |
| 1009 | np->line_speed = 3; /* 1000M */ |
| 1010 | else if (data == Speed_100M) |
| 1011 | np->line_speed = 2; /* 100M */ |
| 1012 | else |
| 1013 | np->line_speed = 1; /* 10M */ |
| 1014 | } |
| 1015 | /* 89/6/13 add, (end) */ |
| 1016 | /* 89/7/27 add, (begin) */ |
| 1017 | else if (np->PHYType == Myson981) { |
| 1018 | unsigned int data; |
| 1019 | |
| 1020 | data = mdio_read(dev, np->phys[0], StatusRegister); |
| 1021 | |
| 1022 | if (data & SPEED100) |
| 1023 | np->line_speed = 2; |
| 1024 | else |
| 1025 | np->line_speed = 1; |
| 1026 | |
| 1027 | if (data & FULLMODE) |
| 1028 | np->duplexmode = 2; |
| 1029 | else |
| 1030 | np->duplexmode = 1; |
| 1031 | } |
| 1032 | /* 89/7/27 add, (end) */ |
| 1033 | /* 89/12/29 add */ |
| 1034 | else if (np->PHYType == LevelOnePHY) { |
| 1035 | unsigned int data; |
| 1036 | |
| 1037 | data = mdio_read(dev, np->phys[0], SpecificReg); |
| 1038 | if (data & LXT1000_Full) |
| 1039 | np->duplexmode = 2; /* full duplex mode */ |
| 1040 | else |
| 1041 | np->duplexmode = 1; /* half duplex mode */ |
| 1042 | data &= SpeedMask; |
| 1043 | if (data == LXT1000_1000M) |
| 1044 | np->line_speed = 3; /* 1000M */ |
| 1045 | else if (data == LXT1000_100M) |
| 1046 | np->line_speed = 2; /* 100M */ |
| 1047 | else |
| 1048 | np->line_speed = 1; /* 10M */ |
| 1049 | } |
| 1050 | np->crvalue &= (~CR_W_PS10) & (~CR_W_FD) & (~CR_W_PS1000); |
| 1051 | if (np->line_speed == 1) |
| 1052 | np->crvalue |= CR_W_PS10; |
| 1053 | else if (np->line_speed == 3) |
| 1054 | np->crvalue |= CR_W_PS1000; |
| 1055 | if (np->duplexmode == 2) |
| 1056 | np->crvalue |= CR_W_FD; |
| 1057 | } |
| 1058 | } |
| 1059 | |
| 1060 | |
| 1061 | /* Take lock before calling this */ |
| 1062 | static void allocate_rx_buffers(struct net_device *dev) |
| 1063 | { |
| 1064 | struct netdev_private *np = netdev_priv(dev); |
| 1065 | |
| 1066 | /* allocate skb for rx buffers */ |
| 1067 | while (np->really_rx_count != RX_RING_SIZE) { |
| 1068 | struct sk_buff *skb; |
| 1069 | |
Pradeep A Dalvi | 21a4e46 | 2012-02-05 02:50:10 +0000 | [diff] [blame] | 1070 | skb = netdev_alloc_skb(dev, np->rx_buf_sz); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1071 | if (skb == NULL) |
| 1072 | break; /* Better luck next round. */ |
| 1073 | |
| 1074 | while (np->lack_rxbuf->skbuff) |
| 1075 | np->lack_rxbuf = np->lack_rxbuf->next_desc_logical; |
| 1076 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1077 | np->lack_rxbuf->skbuff = skb; |
David S. Miller | 689be43 | 2005-06-28 15:25:31 -0700 | [diff] [blame] | 1078 | np->lack_rxbuf->buffer = pci_map_single(np->pci_dev, skb->data, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1079 | np->rx_buf_sz, PCI_DMA_FROMDEVICE); |
| 1080 | np->lack_rxbuf->status = RXOWN; |
| 1081 | ++np->really_rx_count; |
| 1082 | } |
| 1083 | } |
| 1084 | |
| 1085 | |
| 1086 | static void netdev_timer(unsigned long data) |
| 1087 | { |
| 1088 | struct net_device *dev = (struct net_device *) data; |
| 1089 | struct netdev_private *np = netdev_priv(dev); |
| 1090 | void __iomem *ioaddr = np->mem; |
| 1091 | int old_crvalue = np->crvalue; |
| 1092 | unsigned int old_linkok = np->linkok; |
| 1093 | unsigned long flags; |
| 1094 | |
| 1095 | if (debug) |
| 1096 | printk(KERN_DEBUG "%s: Media selection timer tick, status %8.8x " |
| 1097 | "config %8.8x.\n", dev->name, ioread32(ioaddr + ISR), |
| 1098 | ioread32(ioaddr + TCRRCR)); |
| 1099 | |
| 1100 | spin_lock_irqsave(&np->lock, flags); |
| 1101 | |
| 1102 | if (np->flags == HAS_MII_XCVR) { |
| 1103 | getlinkstatus(dev); |
| 1104 | if ((old_linkok == 0) && (np->linkok == 1)) { /* we need to detect the media type again */ |
| 1105 | getlinktype(dev); |
| 1106 | if (np->crvalue != old_crvalue) { |
| 1107 | stop_nic_rxtx(ioaddr, np->crvalue); |
| 1108 | iowrite32(np->crvalue, ioaddr + TCRRCR); |
| 1109 | } |
| 1110 | } |
| 1111 | } |
| 1112 | |
| 1113 | allocate_rx_buffers(dev); |
| 1114 | |
| 1115 | spin_unlock_irqrestore(&np->lock, flags); |
| 1116 | |
| 1117 | np->timer.expires = RUN_AT(10 * HZ); |
| 1118 | add_timer(&np->timer); |
| 1119 | } |
| 1120 | |
| 1121 | |
| 1122 | /* Take lock before calling */ |
| 1123 | /* Reset chip and disable rx, tx and interrupts */ |
| 1124 | static void reset_and_disable_rxtx(struct net_device *dev) |
| 1125 | { |
| 1126 | struct netdev_private *np = netdev_priv(dev); |
| 1127 | void __iomem *ioaddr = np->mem; |
| 1128 | int delay=51; |
| 1129 | |
| 1130 | /* Reset the chip's Tx and Rx processes. */ |
| 1131 | stop_nic_rxtx(ioaddr, 0); |
| 1132 | |
| 1133 | /* Disable interrupts by clearing the interrupt mask. */ |
| 1134 | iowrite32(0, ioaddr + IMR); |
| 1135 | |
| 1136 | /* Reset the chip to erase previous misconfiguration. */ |
| 1137 | iowrite32(0x00000001, ioaddr + BCR); |
| 1138 | |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 1139 | /* Ueimor: wait for 50 PCI cycles (and flush posted writes btw). |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1140 | We surely wait too long (address+data phase). Who cares? */ |
| 1141 | while (--delay) { |
| 1142 | ioread32(ioaddr + BCR); |
| 1143 | rmb(); |
| 1144 | } |
| 1145 | } |
| 1146 | |
| 1147 | |
| 1148 | /* Take lock before calling */ |
| 1149 | /* Restore chip after reset */ |
| 1150 | static void enable_rxtx(struct net_device *dev) |
| 1151 | { |
| 1152 | struct netdev_private *np = netdev_priv(dev); |
| 1153 | void __iomem *ioaddr = np->mem; |
| 1154 | |
| 1155 | reset_rx_descriptors(dev); |
| 1156 | |
| 1157 | iowrite32(np->tx_ring_dma + ((char*)np->cur_tx - (char*)np->tx_ring), |
| 1158 | ioaddr + TXLBA); |
| 1159 | iowrite32(np->rx_ring_dma + ((char*)np->cur_rx - (char*)np->rx_ring), |
| 1160 | ioaddr + RXLBA); |
| 1161 | |
| 1162 | iowrite32(np->bcrvalue, ioaddr + BCR); |
| 1163 | |
| 1164 | iowrite32(0, ioaddr + RXPDR); |
| 1165 | __set_rx_mode(dev); /* changes np->crvalue, writes it into TCRRCR */ |
| 1166 | |
| 1167 | /* Clear and Enable interrupts by setting the interrupt mask. */ |
| 1168 | iowrite32(FBE | TUNF | CNTOVF | RBU | TI | RI, ioaddr + ISR); |
| 1169 | iowrite32(np->imrvalue, ioaddr + IMR); |
| 1170 | |
| 1171 | iowrite32(0, ioaddr + TXPDR); |
| 1172 | } |
| 1173 | |
| 1174 | |
| 1175 | static void reset_timer(unsigned long data) |
| 1176 | { |
| 1177 | struct net_device *dev = (struct net_device *) data; |
| 1178 | struct netdev_private *np = netdev_priv(dev); |
| 1179 | unsigned long flags; |
| 1180 | |
| 1181 | printk(KERN_WARNING "%s: resetting tx and rx machinery\n", dev->name); |
| 1182 | |
| 1183 | spin_lock_irqsave(&np->lock, flags); |
| 1184 | np->crvalue = np->crvalue_sv; |
| 1185 | np->imrvalue = np->imrvalue_sv; |
| 1186 | |
| 1187 | reset_and_disable_rxtx(dev); |
| 1188 | /* works for me without this: |
| 1189 | reset_tx_descriptors(dev); */ |
| 1190 | enable_rxtx(dev); |
| 1191 | netif_start_queue(dev); /* FIXME: or netif_wake_queue(dev); ? */ |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 1192 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1193 | np->reset_timer_armed = 0; |
| 1194 | |
| 1195 | spin_unlock_irqrestore(&np->lock, flags); |
| 1196 | } |
| 1197 | |
| 1198 | |
Arjan van de Ven | ed4cb13 | 2008-10-05 07:35:05 +0000 | [diff] [blame] | 1199 | static void fealnx_tx_timeout(struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1200 | { |
| 1201 | struct netdev_private *np = netdev_priv(dev); |
| 1202 | void __iomem *ioaddr = np->mem; |
| 1203 | unsigned long flags; |
| 1204 | int i; |
| 1205 | |
Joe Perches | ad361c9 | 2009-07-06 13:05:40 -0700 | [diff] [blame] | 1206 | printk(KERN_WARNING |
| 1207 | "%s: Transmit timed out, status %8.8x, resetting...\n", |
| 1208 | dev->name, ioread32(ioaddr + ISR)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1209 | |
| 1210 | { |
| 1211 | printk(KERN_DEBUG " Rx ring %p: ", np->rx_ring); |
| 1212 | for (i = 0; i < RX_RING_SIZE; i++) |
Roland Dreier | 2e31673 | 2009-07-08 17:05:32 -0700 | [diff] [blame] | 1213 | printk(KERN_CONT " %8.8x", |
Joe Perches | ad361c9 | 2009-07-06 13:05:40 -0700 | [diff] [blame] | 1214 | (unsigned int) np->rx_ring[i].status); |
| 1215 | printk(KERN_CONT "\n"); |
| 1216 | printk(KERN_DEBUG " Tx ring %p: ", np->tx_ring); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1217 | for (i = 0; i < TX_RING_SIZE; i++) |
Roland Dreier | 2e31673 | 2009-07-08 17:05:32 -0700 | [diff] [blame] | 1218 | printk(KERN_CONT " %4.4x", np->tx_ring[i].status); |
| 1219 | printk(KERN_CONT "\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1220 | } |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 1221 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1222 | spin_lock_irqsave(&np->lock, flags); |
| 1223 | |
| 1224 | reset_and_disable_rxtx(dev); |
| 1225 | reset_tx_descriptors(dev); |
| 1226 | enable_rxtx(dev); |
| 1227 | |
| 1228 | spin_unlock_irqrestore(&np->lock, flags); |
| 1229 | |
Florian Westphal | 860e953 | 2016-05-03 16:33:13 +0200 | [diff] [blame] | 1230 | netif_trans_update(dev); /* prevent tx timeout */ |
Kulikov Vasiliy | d117b66 | 2010-07-05 02:13:36 +0000 | [diff] [blame] | 1231 | dev->stats.tx_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1232 | netif_wake_queue(dev); /* or .._start_.. ?? */ |
| 1233 | } |
| 1234 | |
| 1235 | |
| 1236 | /* Initialize the Rx and Tx rings, along with various 'dev' bits. */ |
| 1237 | static void init_ring(struct net_device *dev) |
| 1238 | { |
| 1239 | struct netdev_private *np = netdev_priv(dev); |
| 1240 | int i; |
| 1241 | |
| 1242 | /* initialize rx variables */ |
| 1243 | np->rx_buf_sz = (dev->mtu <= 1500 ? PKT_BUF_SZ : dev->mtu + 32); |
| 1244 | np->cur_rx = &np->rx_ring[0]; |
| 1245 | np->lack_rxbuf = np->rx_ring; |
| 1246 | np->really_rx_count = 0; |
| 1247 | |
| 1248 | /* initial rx descriptors. */ |
| 1249 | for (i = 0; i < RX_RING_SIZE; i++) { |
| 1250 | np->rx_ring[i].status = 0; |
| 1251 | np->rx_ring[i].control = np->rx_buf_sz << RBSShift; |
| 1252 | np->rx_ring[i].next_desc = np->rx_ring_dma + |
| 1253 | (i + 1)*sizeof(struct fealnx_desc); |
| 1254 | np->rx_ring[i].next_desc_logical = &np->rx_ring[i + 1]; |
| 1255 | np->rx_ring[i].skbuff = NULL; |
| 1256 | } |
| 1257 | |
| 1258 | /* for the last rx descriptor */ |
| 1259 | np->rx_ring[i - 1].next_desc = np->rx_ring_dma; |
| 1260 | np->rx_ring[i - 1].next_desc_logical = np->rx_ring; |
| 1261 | |
| 1262 | /* allocate skb for rx buffers */ |
| 1263 | for (i = 0; i < RX_RING_SIZE; i++) { |
Pradeep A Dalvi | 21a4e46 | 2012-02-05 02:50:10 +0000 | [diff] [blame] | 1264 | struct sk_buff *skb = netdev_alloc_skb(dev, np->rx_buf_sz); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1265 | |
| 1266 | if (skb == NULL) { |
| 1267 | np->lack_rxbuf = &np->rx_ring[i]; |
| 1268 | break; |
| 1269 | } |
| 1270 | |
| 1271 | ++np->really_rx_count; |
| 1272 | np->rx_ring[i].skbuff = skb; |
David S. Miller | 689be43 | 2005-06-28 15:25:31 -0700 | [diff] [blame] | 1273 | np->rx_ring[i].buffer = pci_map_single(np->pci_dev, skb->data, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1274 | np->rx_buf_sz, PCI_DMA_FROMDEVICE); |
| 1275 | np->rx_ring[i].status = RXOWN; |
| 1276 | np->rx_ring[i].control |= RXIC; |
| 1277 | } |
| 1278 | |
| 1279 | /* initialize tx variables */ |
| 1280 | np->cur_tx = &np->tx_ring[0]; |
| 1281 | np->cur_tx_copy = &np->tx_ring[0]; |
| 1282 | np->really_tx_count = 0; |
| 1283 | np->free_tx_count = TX_RING_SIZE; |
| 1284 | |
| 1285 | for (i = 0; i < TX_RING_SIZE; i++) { |
| 1286 | np->tx_ring[i].status = 0; |
| 1287 | /* do we need np->tx_ring[i].control = XXX; ?? */ |
| 1288 | np->tx_ring[i].next_desc = np->tx_ring_dma + |
| 1289 | (i + 1)*sizeof(struct fealnx_desc); |
| 1290 | np->tx_ring[i].next_desc_logical = &np->tx_ring[i + 1]; |
| 1291 | np->tx_ring[i].skbuff = NULL; |
| 1292 | } |
| 1293 | |
| 1294 | /* for the last tx descriptor */ |
| 1295 | np->tx_ring[i - 1].next_desc = np->tx_ring_dma; |
| 1296 | np->tx_ring[i - 1].next_desc_logical = &np->tx_ring[0]; |
| 1297 | } |
| 1298 | |
| 1299 | |
Stephen Hemminger | 61357325 | 2009-08-31 19:50:58 +0000 | [diff] [blame] | 1300 | static netdev_tx_t start_tx(struct sk_buff *skb, struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1301 | { |
| 1302 | struct netdev_private *np = netdev_priv(dev); |
| 1303 | unsigned long flags; |
| 1304 | |
| 1305 | spin_lock_irqsave(&np->lock, flags); |
| 1306 | |
| 1307 | np->cur_tx_copy->skbuff = skb; |
| 1308 | |
| 1309 | #define one_buffer |
| 1310 | #define BPT 1022 |
| 1311 | #if defined(one_buffer) |
| 1312 | np->cur_tx_copy->buffer = pci_map_single(np->pci_dev, skb->data, |
| 1313 | skb->len, PCI_DMA_TODEVICE); |
| 1314 | np->cur_tx_copy->control = TXIC | TXLD | TXFD | CRCEnable | PADEnable; |
| 1315 | np->cur_tx_copy->control |= (skb->len << PKTSShift); /* pkt size */ |
| 1316 | np->cur_tx_copy->control |= (skb->len << TBSShift); /* buffer size */ |
| 1317 | // 89/12/29 add, |
| 1318 | if (np->pci_dev->device == 0x891) |
| 1319 | np->cur_tx_copy->control |= ETIControl | RetryTxLC; |
| 1320 | np->cur_tx_copy->status = TXOWN; |
| 1321 | np->cur_tx_copy = np->cur_tx_copy->next_desc_logical; |
| 1322 | --np->free_tx_count; |
| 1323 | #elif defined(two_buffer) |
| 1324 | if (skb->len > BPT) { |
| 1325 | struct fealnx_desc *next; |
| 1326 | |
| 1327 | /* for the first descriptor */ |
| 1328 | np->cur_tx_copy->buffer = pci_map_single(np->pci_dev, skb->data, |
| 1329 | BPT, PCI_DMA_TODEVICE); |
| 1330 | np->cur_tx_copy->control = TXIC | TXFD | CRCEnable | PADEnable; |
| 1331 | np->cur_tx_copy->control |= (skb->len << PKTSShift); /* pkt size */ |
| 1332 | np->cur_tx_copy->control |= (BPT << TBSShift); /* buffer size */ |
| 1333 | |
| 1334 | /* for the last descriptor */ |
| 1335 | next = np->cur_tx_copy->next_desc_logical; |
| 1336 | next->skbuff = skb; |
| 1337 | next->control = TXIC | TXLD | CRCEnable | PADEnable; |
| 1338 | next->control |= (skb->len << PKTSShift); /* pkt size */ |
| 1339 | next->control |= ((skb->len - BPT) << TBSShift); /* buf size */ |
| 1340 | // 89/12/29 add, |
| 1341 | if (np->pci_dev->device == 0x891) |
| 1342 | np->cur_tx_copy->control |= ETIControl | RetryTxLC; |
| 1343 | next->buffer = pci_map_single(ep->pci_dev, skb->data + BPT, |
| 1344 | skb->len - BPT, PCI_DMA_TODEVICE); |
| 1345 | |
| 1346 | next->status = TXOWN; |
| 1347 | np->cur_tx_copy->status = TXOWN; |
| 1348 | |
| 1349 | np->cur_tx_copy = next->next_desc_logical; |
| 1350 | np->free_tx_count -= 2; |
| 1351 | } else { |
| 1352 | np->cur_tx_copy->buffer = pci_map_single(np->pci_dev, skb->data, |
| 1353 | skb->len, PCI_DMA_TODEVICE); |
| 1354 | np->cur_tx_copy->control = TXIC | TXLD | TXFD | CRCEnable | PADEnable; |
| 1355 | np->cur_tx_copy->control |= (skb->len << PKTSShift); /* pkt size */ |
| 1356 | np->cur_tx_copy->control |= (skb->len << TBSShift); /* buffer size */ |
| 1357 | // 89/12/29 add, |
| 1358 | if (np->pci_dev->device == 0x891) |
| 1359 | np->cur_tx_copy->control |= ETIControl | RetryTxLC; |
| 1360 | np->cur_tx_copy->status = TXOWN; |
| 1361 | np->cur_tx_copy = np->cur_tx_copy->next_desc_logical; |
| 1362 | --np->free_tx_count; |
| 1363 | } |
| 1364 | #endif |
| 1365 | |
| 1366 | if (np->free_tx_count < 2) |
| 1367 | netif_stop_queue(dev); |
| 1368 | ++np->really_tx_count; |
| 1369 | iowrite32(0, np->mem + TXPDR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1370 | |
| 1371 | spin_unlock_irqrestore(&np->lock, flags); |
Patrick McHardy | 6ed1065 | 2009-06-23 06:03:08 +0000 | [diff] [blame] | 1372 | return NETDEV_TX_OK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1373 | } |
| 1374 | |
| 1375 | |
| 1376 | /* Take lock before calling */ |
| 1377 | /* Chip probably hosed tx ring. Clean up. */ |
| 1378 | static void reset_tx_descriptors(struct net_device *dev) |
| 1379 | { |
| 1380 | struct netdev_private *np = netdev_priv(dev); |
| 1381 | struct fealnx_desc *cur; |
| 1382 | int i; |
| 1383 | |
| 1384 | /* initialize tx variables */ |
| 1385 | np->cur_tx = &np->tx_ring[0]; |
| 1386 | np->cur_tx_copy = &np->tx_ring[0]; |
| 1387 | np->really_tx_count = 0; |
| 1388 | np->free_tx_count = TX_RING_SIZE; |
| 1389 | |
| 1390 | for (i = 0; i < TX_RING_SIZE; i++) { |
| 1391 | cur = &np->tx_ring[i]; |
| 1392 | if (cur->skbuff) { |
| 1393 | pci_unmap_single(np->pci_dev, cur->buffer, |
| 1394 | cur->skbuff->len, PCI_DMA_TODEVICE); |
Denis Vlasenko | 400de2c | 2005-06-20 15:33:04 -0700 | [diff] [blame] | 1395 | dev_kfree_skb_any(cur->skbuff); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1396 | cur->skbuff = NULL; |
| 1397 | } |
| 1398 | cur->status = 0; |
| 1399 | cur->control = 0; /* needed? */ |
| 1400 | /* probably not needed. We do it for purely paranoid reasons */ |
| 1401 | cur->next_desc = np->tx_ring_dma + |
| 1402 | (i + 1)*sizeof(struct fealnx_desc); |
| 1403 | cur->next_desc_logical = &np->tx_ring[i + 1]; |
| 1404 | } |
| 1405 | /* for the last tx descriptor */ |
| 1406 | np->tx_ring[TX_RING_SIZE - 1].next_desc = np->tx_ring_dma; |
| 1407 | np->tx_ring[TX_RING_SIZE - 1].next_desc_logical = &np->tx_ring[0]; |
| 1408 | } |
| 1409 | |
| 1410 | |
| 1411 | /* Take lock and stop rx before calling this */ |
| 1412 | static void reset_rx_descriptors(struct net_device *dev) |
| 1413 | { |
| 1414 | struct netdev_private *np = netdev_priv(dev); |
| 1415 | struct fealnx_desc *cur = np->cur_rx; |
| 1416 | int i; |
| 1417 | |
| 1418 | allocate_rx_buffers(dev); |
| 1419 | |
| 1420 | for (i = 0; i < RX_RING_SIZE; i++) { |
| 1421 | if (cur->skbuff) |
| 1422 | cur->status = RXOWN; |
| 1423 | cur = cur->next_desc_logical; |
| 1424 | } |
| 1425 | |
| 1426 | iowrite32(np->rx_ring_dma + ((char*)np->cur_rx - (char*)np->rx_ring), |
| 1427 | np->mem + RXLBA); |
| 1428 | } |
| 1429 | |
| 1430 | |
| 1431 | /* The interrupt handler does all of the Rx thread work and cleans up |
| 1432 | after the Tx thread. */ |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 1433 | static irqreturn_t intr_handler(int irq, void *dev_instance) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1434 | { |
| 1435 | struct net_device *dev = (struct net_device *) dev_instance; |
| 1436 | struct netdev_private *np = netdev_priv(dev); |
| 1437 | void __iomem *ioaddr = np->mem; |
| 1438 | long boguscnt = max_interrupt_work; |
| 1439 | unsigned int num_tx = 0; |
| 1440 | int handled = 0; |
| 1441 | |
| 1442 | spin_lock(&np->lock); |
| 1443 | |
| 1444 | iowrite32(0, ioaddr + IMR); |
| 1445 | |
| 1446 | do { |
| 1447 | u32 intr_status = ioread32(ioaddr + ISR); |
| 1448 | |
| 1449 | /* Acknowledge all of the current interrupt sources ASAP. */ |
| 1450 | iowrite32(intr_status, ioaddr + ISR); |
| 1451 | |
| 1452 | if (debug) |
| 1453 | printk(KERN_DEBUG "%s: Interrupt, status %4.4x.\n", dev->name, |
| 1454 | intr_status); |
| 1455 | |
| 1456 | if (!(intr_status & np->imrvalue)) |
| 1457 | break; |
| 1458 | |
| 1459 | handled = 1; |
| 1460 | |
| 1461 | // 90/1/16 delete, |
| 1462 | // |
| 1463 | // if (intr_status & FBE) |
| 1464 | // { /* fatal error */ |
| 1465 | // stop_nic_tx(ioaddr, 0); |
| 1466 | // stop_nic_rx(ioaddr, 0); |
| 1467 | // break; |
| 1468 | // }; |
| 1469 | |
| 1470 | if (intr_status & TUNF) |
| 1471 | iowrite32(0, ioaddr + TXPDR); |
| 1472 | |
| 1473 | if (intr_status & CNTOVF) { |
| 1474 | /* missed pkts */ |
Kulikov Vasiliy | d117b66 | 2010-07-05 02:13:36 +0000 | [diff] [blame] | 1475 | dev->stats.rx_missed_errors += |
| 1476 | ioread32(ioaddr + TALLY) & 0x7fff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1477 | |
| 1478 | /* crc error */ |
Kulikov Vasiliy | d117b66 | 2010-07-05 02:13:36 +0000 | [diff] [blame] | 1479 | dev->stats.rx_crc_errors += |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1480 | (ioread32(ioaddr + TALLY) & 0x7fff0000) >> 16; |
| 1481 | } |
| 1482 | |
| 1483 | if (intr_status & (RI | RBU)) { |
| 1484 | if (intr_status & RI) |
| 1485 | netdev_rx(dev); |
| 1486 | else { |
| 1487 | stop_nic_rx(ioaddr, np->crvalue); |
| 1488 | reset_rx_descriptors(dev); |
| 1489 | iowrite32(np->crvalue, ioaddr + TCRRCR); |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 1490 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1491 | } |
| 1492 | |
| 1493 | while (np->really_tx_count) { |
| 1494 | long tx_status = np->cur_tx->status; |
| 1495 | long tx_control = np->cur_tx->control; |
| 1496 | |
| 1497 | if (!(tx_control & TXLD)) { /* this pkt is combined by two tx descriptors */ |
| 1498 | struct fealnx_desc *next; |
| 1499 | |
| 1500 | next = np->cur_tx->next_desc_logical; |
| 1501 | tx_status = next->status; |
| 1502 | tx_control = next->control; |
| 1503 | } |
| 1504 | |
| 1505 | if (tx_status & TXOWN) |
| 1506 | break; |
| 1507 | |
| 1508 | if (!(np->crvalue & CR_W_ENH)) { |
| 1509 | if (tx_status & (CSL | LC | EC | UDF | HF)) { |
Kulikov Vasiliy | d117b66 | 2010-07-05 02:13:36 +0000 | [diff] [blame] | 1510 | dev->stats.tx_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1511 | if (tx_status & EC) |
Kulikov Vasiliy | d117b66 | 2010-07-05 02:13:36 +0000 | [diff] [blame] | 1512 | dev->stats.tx_aborted_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1513 | if (tx_status & CSL) |
Kulikov Vasiliy | d117b66 | 2010-07-05 02:13:36 +0000 | [diff] [blame] | 1514 | dev->stats.tx_carrier_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1515 | if (tx_status & LC) |
Kulikov Vasiliy | d117b66 | 2010-07-05 02:13:36 +0000 | [diff] [blame] | 1516 | dev->stats.tx_window_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1517 | if (tx_status & UDF) |
Kulikov Vasiliy | d117b66 | 2010-07-05 02:13:36 +0000 | [diff] [blame] | 1518 | dev->stats.tx_fifo_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1519 | if ((tx_status & HF) && np->mii.full_duplex == 0) |
Kulikov Vasiliy | d117b66 | 2010-07-05 02:13:36 +0000 | [diff] [blame] | 1520 | dev->stats.tx_heartbeat_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1521 | |
| 1522 | } else { |
Kulikov Vasiliy | d117b66 | 2010-07-05 02:13:36 +0000 | [diff] [blame] | 1523 | dev->stats.tx_bytes += |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1524 | ((tx_control & PKTSMask) >> PKTSShift); |
| 1525 | |
Kulikov Vasiliy | d117b66 | 2010-07-05 02:13:36 +0000 | [diff] [blame] | 1526 | dev->stats.collisions += |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1527 | ((tx_status & NCRMask) >> NCRShift); |
Kulikov Vasiliy | d117b66 | 2010-07-05 02:13:36 +0000 | [diff] [blame] | 1528 | dev->stats.tx_packets++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1529 | } |
| 1530 | } else { |
Kulikov Vasiliy | d117b66 | 2010-07-05 02:13:36 +0000 | [diff] [blame] | 1531 | dev->stats.tx_bytes += |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1532 | ((tx_control & PKTSMask) >> PKTSShift); |
Kulikov Vasiliy | d117b66 | 2010-07-05 02:13:36 +0000 | [diff] [blame] | 1533 | dev->stats.tx_packets++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1534 | } |
| 1535 | |
| 1536 | /* Free the original skb. */ |
| 1537 | pci_unmap_single(np->pci_dev, np->cur_tx->buffer, |
| 1538 | np->cur_tx->skbuff->len, PCI_DMA_TODEVICE); |
| 1539 | dev_kfree_skb_irq(np->cur_tx->skbuff); |
| 1540 | np->cur_tx->skbuff = NULL; |
| 1541 | --np->really_tx_count; |
| 1542 | if (np->cur_tx->control & TXLD) { |
| 1543 | np->cur_tx = np->cur_tx->next_desc_logical; |
| 1544 | ++np->free_tx_count; |
| 1545 | } else { |
| 1546 | np->cur_tx = np->cur_tx->next_desc_logical; |
| 1547 | np->cur_tx = np->cur_tx->next_desc_logical; |
| 1548 | np->free_tx_count += 2; |
| 1549 | } |
| 1550 | num_tx++; |
| 1551 | } /* end of for loop */ |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 1552 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1553 | if (num_tx && np->free_tx_count >= 2) |
| 1554 | netif_wake_queue(dev); |
| 1555 | |
| 1556 | /* read transmit status for enhanced mode only */ |
| 1557 | if (np->crvalue & CR_W_ENH) { |
| 1558 | long data; |
| 1559 | |
| 1560 | data = ioread32(ioaddr + TSR); |
Kulikov Vasiliy | d117b66 | 2010-07-05 02:13:36 +0000 | [diff] [blame] | 1561 | dev->stats.tx_errors += (data & 0xff000000) >> 24; |
| 1562 | dev->stats.tx_aborted_errors += |
| 1563 | (data & 0xff000000) >> 24; |
| 1564 | dev->stats.tx_window_errors += |
| 1565 | (data & 0x00ff0000) >> 16; |
| 1566 | dev->stats.collisions += (data & 0x0000ffff); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1567 | } |
| 1568 | |
| 1569 | if (--boguscnt < 0) { |
| 1570 | printk(KERN_WARNING "%s: Too much work at interrupt, " |
| 1571 | "status=0x%4.4x.\n", dev->name, intr_status); |
| 1572 | if (!np->reset_timer_armed) { |
| 1573 | np->reset_timer_armed = 1; |
| 1574 | np->reset_timer.expires = RUN_AT(HZ/2); |
| 1575 | add_timer(&np->reset_timer); |
| 1576 | stop_nic_rxtx(ioaddr, 0); |
| 1577 | netif_stop_queue(dev); |
| 1578 | /* or netif_tx_disable(dev); ?? */ |
| 1579 | /* Prevent other paths from enabling tx,rx,intrs */ |
| 1580 | np->crvalue_sv = np->crvalue; |
| 1581 | np->imrvalue_sv = np->imrvalue; |
| 1582 | np->crvalue &= ~(CR_W_TXEN | CR_W_RXEN); /* or simply = 0? */ |
| 1583 | np->imrvalue = 0; |
| 1584 | } |
| 1585 | |
| 1586 | break; |
| 1587 | } |
| 1588 | } while (1); |
| 1589 | |
| 1590 | /* read the tally counters */ |
| 1591 | /* missed pkts */ |
Kulikov Vasiliy | d117b66 | 2010-07-05 02:13:36 +0000 | [diff] [blame] | 1592 | dev->stats.rx_missed_errors += ioread32(ioaddr + TALLY) & 0x7fff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1593 | |
| 1594 | /* crc error */ |
Kulikov Vasiliy | d117b66 | 2010-07-05 02:13:36 +0000 | [diff] [blame] | 1595 | dev->stats.rx_crc_errors += |
| 1596 | (ioread32(ioaddr + TALLY) & 0x7fff0000) >> 16; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1597 | |
| 1598 | if (debug) |
| 1599 | printk(KERN_DEBUG "%s: exiting interrupt, status=%#4.4x.\n", |
| 1600 | dev->name, ioread32(ioaddr + ISR)); |
| 1601 | |
| 1602 | iowrite32(np->imrvalue, ioaddr + IMR); |
| 1603 | |
| 1604 | spin_unlock(&np->lock); |
| 1605 | |
| 1606 | return IRQ_RETVAL(handled); |
| 1607 | } |
| 1608 | |
| 1609 | |
| 1610 | /* This routine is logically part of the interrupt handler, but separated |
| 1611 | for clarity and better register allocation. */ |
| 1612 | static int netdev_rx(struct net_device *dev) |
| 1613 | { |
| 1614 | struct netdev_private *np = netdev_priv(dev); |
| 1615 | void __iomem *ioaddr = np->mem; |
| 1616 | |
| 1617 | /* If EOP is set on the next entry, it's a new packet. Send it up. */ |
| 1618 | while (!(np->cur_rx->status & RXOWN) && np->cur_rx->skbuff) { |
| 1619 | s32 rx_status = np->cur_rx->status; |
| 1620 | |
| 1621 | if (np->really_rx_count == 0) |
| 1622 | break; |
| 1623 | |
| 1624 | if (debug) |
| 1625 | printk(KERN_DEBUG " netdev_rx() status was %8.8x.\n", rx_status); |
| 1626 | |
Joe Perches | 8e95a20 | 2009-12-03 07:58:21 +0000 | [diff] [blame] | 1627 | if ((!((rx_status & RXFSD) && (rx_status & RXLSD))) || |
| 1628 | (rx_status & ErrorSummary)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1629 | if (rx_status & ErrorSummary) { /* there was a fatal error */ |
| 1630 | if (debug) |
| 1631 | printk(KERN_DEBUG |
| 1632 | "%s: Receive error, Rx status %8.8x.\n", |
| 1633 | dev->name, rx_status); |
| 1634 | |
Kulikov Vasiliy | d117b66 | 2010-07-05 02:13:36 +0000 | [diff] [blame] | 1635 | dev->stats.rx_errors++; /* end of a packet. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1636 | if (rx_status & (LONG | RUNT)) |
Kulikov Vasiliy | d117b66 | 2010-07-05 02:13:36 +0000 | [diff] [blame] | 1637 | dev->stats.rx_length_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1638 | if (rx_status & RXER) |
Kulikov Vasiliy | d117b66 | 2010-07-05 02:13:36 +0000 | [diff] [blame] | 1639 | dev->stats.rx_frame_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1640 | if (rx_status & CRC) |
Kulikov Vasiliy | d117b66 | 2010-07-05 02:13:36 +0000 | [diff] [blame] | 1641 | dev->stats.rx_crc_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1642 | } else { |
| 1643 | int need_to_reset = 0; |
| 1644 | int desno = 0; |
| 1645 | |
| 1646 | if (rx_status & RXFSD) { /* this pkt is too long, over one rx buffer */ |
| 1647 | struct fealnx_desc *cur; |
| 1648 | |
| 1649 | /* check this packet is received completely? */ |
| 1650 | cur = np->cur_rx; |
| 1651 | while (desno <= np->really_rx_count) { |
| 1652 | ++desno; |
Joe Perches | 8e95a20 | 2009-12-03 07:58:21 +0000 | [diff] [blame] | 1653 | if ((!(cur->status & RXOWN)) && |
| 1654 | (cur->status & RXLSD)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1655 | break; |
| 1656 | /* goto next rx descriptor */ |
| 1657 | cur = cur->next_desc_logical; |
| 1658 | } |
| 1659 | if (desno > np->really_rx_count) |
| 1660 | need_to_reset = 1; |
| 1661 | } else /* RXLSD did not find, something error */ |
| 1662 | need_to_reset = 1; |
| 1663 | |
| 1664 | if (need_to_reset == 0) { |
| 1665 | int i; |
| 1666 | |
Kulikov Vasiliy | d117b66 | 2010-07-05 02:13:36 +0000 | [diff] [blame] | 1667 | dev->stats.rx_length_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1668 | |
| 1669 | /* free all rx descriptors related this long pkt */ |
| 1670 | for (i = 0; i < desno; ++i) { |
| 1671 | if (!np->cur_rx->skbuff) { |
| 1672 | printk(KERN_DEBUG |
| 1673 | "%s: I'm scared\n", dev->name); |
| 1674 | break; |
| 1675 | } |
| 1676 | np->cur_rx->status = RXOWN; |
| 1677 | np->cur_rx = np->cur_rx->next_desc_logical; |
| 1678 | } |
| 1679 | continue; |
| 1680 | } else { /* rx error, need to reset this chip */ |
| 1681 | stop_nic_rx(ioaddr, np->crvalue); |
| 1682 | reset_rx_descriptors(dev); |
| 1683 | iowrite32(np->crvalue, ioaddr + TCRRCR); |
| 1684 | } |
| 1685 | break; /* exit the while loop */ |
| 1686 | } |
| 1687 | } else { /* this received pkt is ok */ |
| 1688 | |
| 1689 | struct sk_buff *skb; |
| 1690 | /* Omit the four octet CRC from the length. */ |
| 1691 | short pkt_len = ((rx_status & FLNGMASK) >> FLNGShift) - 4; |
| 1692 | |
| 1693 | #ifndef final_version |
| 1694 | if (debug) |
| 1695 | printk(KERN_DEBUG " netdev_rx() normal Rx pkt length %d" |
| 1696 | " status %x.\n", pkt_len, rx_status); |
| 1697 | #endif |
| 1698 | |
| 1699 | /* Check if the packet is long enough to accept without copying |
| 1700 | to a minimally-sized skbuff. */ |
| 1701 | if (pkt_len < rx_copybreak && |
Pradeep A Dalvi | 21a4e46 | 2012-02-05 02:50:10 +0000 | [diff] [blame] | 1702 | (skb = netdev_alloc_skb(dev, pkt_len + 2)) != NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1703 | skb_reserve(skb, 2); /* 16 byte align the IP header */ |
| 1704 | pci_dma_sync_single_for_cpu(np->pci_dev, |
| 1705 | np->cur_rx->buffer, |
| 1706 | np->rx_buf_sz, |
| 1707 | PCI_DMA_FROMDEVICE); |
| 1708 | /* Call copy + cksum if available. */ |
| 1709 | |
| 1710 | #if ! defined(__alpha__) |
David S. Miller | 8c7b7fa | 2007-07-10 22:08:12 -0700 | [diff] [blame] | 1711 | skb_copy_to_linear_data(skb, |
| 1712 | np->cur_rx->skbuff->data, pkt_len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1713 | skb_put(skb, pkt_len); |
| 1714 | #else |
| 1715 | memcpy(skb_put(skb, pkt_len), |
David S. Miller | 689be43 | 2005-06-28 15:25:31 -0700 | [diff] [blame] | 1716 | np->cur_rx->skbuff->data, pkt_len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1717 | #endif |
| 1718 | pci_dma_sync_single_for_device(np->pci_dev, |
| 1719 | np->cur_rx->buffer, |
| 1720 | np->rx_buf_sz, |
| 1721 | PCI_DMA_FROMDEVICE); |
| 1722 | } else { |
| 1723 | pci_unmap_single(np->pci_dev, |
| 1724 | np->cur_rx->buffer, |
| 1725 | np->rx_buf_sz, |
| 1726 | PCI_DMA_FROMDEVICE); |
| 1727 | skb_put(skb = np->cur_rx->skbuff, pkt_len); |
| 1728 | np->cur_rx->skbuff = NULL; |
| 1729 | --np->really_rx_count; |
| 1730 | } |
| 1731 | skb->protocol = eth_type_trans(skb, dev); |
| 1732 | netif_rx(skb); |
Kulikov Vasiliy | d117b66 | 2010-07-05 02:13:36 +0000 | [diff] [blame] | 1733 | dev->stats.rx_packets++; |
| 1734 | dev->stats.rx_bytes += pkt_len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1735 | } |
| 1736 | |
| 1737 | np->cur_rx = np->cur_rx->next_desc_logical; |
| 1738 | } /* end of while loop */ |
| 1739 | |
| 1740 | /* allocate skb for rx buffers */ |
| 1741 | allocate_rx_buffers(dev); |
| 1742 | |
| 1743 | return 0; |
| 1744 | } |
| 1745 | |
| 1746 | |
| 1747 | static struct net_device_stats *get_stats(struct net_device *dev) |
| 1748 | { |
| 1749 | struct netdev_private *np = netdev_priv(dev); |
| 1750 | void __iomem *ioaddr = np->mem; |
| 1751 | |
| 1752 | /* The chip only need report frame silently dropped. */ |
| 1753 | if (netif_running(dev)) { |
Kulikov Vasiliy | d117b66 | 2010-07-05 02:13:36 +0000 | [diff] [blame] | 1754 | dev->stats.rx_missed_errors += |
| 1755 | ioread32(ioaddr + TALLY) & 0x7fff; |
| 1756 | dev->stats.rx_crc_errors += |
| 1757 | (ioread32(ioaddr + TALLY) & 0x7fff0000) >> 16; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1758 | } |
| 1759 | |
Kulikov Vasiliy | d117b66 | 2010-07-05 02:13:36 +0000 | [diff] [blame] | 1760 | return &dev->stats; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1761 | } |
| 1762 | |
| 1763 | |
| 1764 | /* for dev->set_multicast_list */ |
| 1765 | static void set_rx_mode(struct net_device *dev) |
| 1766 | { |
| 1767 | spinlock_t *lp = &((struct netdev_private *)netdev_priv(dev))->lock; |
| 1768 | unsigned long flags; |
| 1769 | spin_lock_irqsave(lp, flags); |
| 1770 | __set_rx_mode(dev); |
| 1771 | spin_unlock_irqrestore(lp, flags); |
| 1772 | } |
| 1773 | |
| 1774 | |
| 1775 | /* Take lock before calling */ |
| 1776 | static void __set_rx_mode(struct net_device *dev) |
| 1777 | { |
| 1778 | struct netdev_private *np = netdev_priv(dev); |
| 1779 | void __iomem *ioaddr = np->mem; |
| 1780 | u32 mc_filter[2]; /* Multicast hash filter */ |
| 1781 | u32 rx_mode; |
| 1782 | |
| 1783 | if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1784 | memset(mc_filter, 0xff, sizeof(mc_filter)); |
| 1785 | rx_mode = CR_W_PROM | CR_W_AB | CR_W_AM; |
Jiri Pirko | 4cd24ea | 2010-02-08 04:30:35 +0000 | [diff] [blame] | 1786 | } else if ((netdev_mc_count(dev) > multicast_filter_limit) || |
Joe Perches | 8e95a20 | 2009-12-03 07:58:21 +0000 | [diff] [blame] | 1787 | (dev->flags & IFF_ALLMULTI)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1788 | /* Too many to match, or accept all multicasts. */ |
| 1789 | memset(mc_filter, 0xff, sizeof(mc_filter)); |
| 1790 | rx_mode = CR_W_AB | CR_W_AM; |
| 1791 | } else { |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 1792 | struct netdev_hw_addr *ha; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1793 | |
| 1794 | memset(mc_filter, 0, sizeof(mc_filter)); |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 1795 | netdev_for_each_mc_addr(ha, dev) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1796 | unsigned int bit; |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 1797 | bit = (ether_crc(ETH_ALEN, ha->addr) >> 26) ^ 0x3F; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1798 | mc_filter[bit >> 5] |= (1 << bit); |
| 1799 | } |
| 1800 | rx_mode = CR_W_AB | CR_W_AM; |
| 1801 | } |
| 1802 | |
| 1803 | stop_nic_rxtx(ioaddr, np->crvalue); |
| 1804 | |
| 1805 | iowrite32(mc_filter[0], ioaddr + MAR0); |
| 1806 | iowrite32(mc_filter[1], ioaddr + MAR1); |
| 1807 | np->crvalue &= ~CR_W_RXMODEMASK; |
| 1808 | np->crvalue |= rx_mode; |
| 1809 | iowrite32(np->crvalue, ioaddr + TCRRCR); |
| 1810 | } |
| 1811 | |
| 1812 | static void netdev_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info) |
| 1813 | { |
| 1814 | struct netdev_private *np = netdev_priv(dev); |
| 1815 | |
Rick Jones | 68aad78 | 2011-11-07 13:29:27 +0000 | [diff] [blame] | 1816 | strlcpy(info->driver, DRV_NAME, sizeof(info->driver)); |
| 1817 | strlcpy(info->version, DRV_VERSION, sizeof(info->version)); |
| 1818 | 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] | 1819 | } |
| 1820 | |
| 1821 | static int netdev_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) |
| 1822 | { |
| 1823 | struct netdev_private *np = netdev_priv(dev); |
| 1824 | int rc; |
| 1825 | |
| 1826 | spin_lock_irq(&np->lock); |
| 1827 | rc = mii_ethtool_gset(&np->mii, cmd); |
| 1828 | spin_unlock_irq(&np->lock); |
| 1829 | |
| 1830 | return rc; |
| 1831 | } |
| 1832 | |
| 1833 | static int netdev_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) |
| 1834 | { |
| 1835 | struct netdev_private *np = netdev_priv(dev); |
| 1836 | int rc; |
| 1837 | |
| 1838 | spin_lock_irq(&np->lock); |
| 1839 | rc = mii_ethtool_sset(&np->mii, cmd); |
| 1840 | spin_unlock_irq(&np->lock); |
| 1841 | |
| 1842 | return rc; |
| 1843 | } |
| 1844 | |
| 1845 | static int netdev_nway_reset(struct net_device *dev) |
| 1846 | { |
| 1847 | struct netdev_private *np = netdev_priv(dev); |
| 1848 | return mii_nway_restart(&np->mii); |
| 1849 | } |
| 1850 | |
| 1851 | static u32 netdev_get_link(struct net_device *dev) |
| 1852 | { |
| 1853 | struct netdev_private *np = netdev_priv(dev); |
| 1854 | return mii_link_ok(&np->mii); |
| 1855 | } |
| 1856 | |
| 1857 | static u32 netdev_get_msglevel(struct net_device *dev) |
| 1858 | { |
| 1859 | return debug; |
| 1860 | } |
| 1861 | |
| 1862 | static void netdev_set_msglevel(struct net_device *dev, u32 value) |
| 1863 | { |
| 1864 | debug = value; |
| 1865 | } |
| 1866 | |
Jeff Garzik | 7282d49 | 2006-09-13 14:30:00 -0400 | [diff] [blame] | 1867 | static const struct ethtool_ops netdev_ethtool_ops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1868 | .get_drvinfo = netdev_get_drvinfo, |
| 1869 | .get_settings = netdev_get_settings, |
| 1870 | .set_settings = netdev_set_settings, |
| 1871 | .nway_reset = netdev_nway_reset, |
| 1872 | .get_link = netdev_get_link, |
| 1873 | .get_msglevel = netdev_get_msglevel, |
| 1874 | .set_msglevel = netdev_set_msglevel, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1875 | }; |
| 1876 | |
| 1877 | static int mii_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) |
| 1878 | { |
| 1879 | struct netdev_private *np = netdev_priv(dev); |
| 1880 | int rc; |
| 1881 | |
| 1882 | if (!netif_running(dev)) |
| 1883 | return -EINVAL; |
| 1884 | |
| 1885 | spin_lock_irq(&np->lock); |
| 1886 | rc = generic_mii_ioctl(&np->mii, if_mii(rq), cmd, NULL); |
| 1887 | spin_unlock_irq(&np->lock); |
| 1888 | |
| 1889 | return rc; |
| 1890 | } |
| 1891 | |
| 1892 | |
| 1893 | static int netdev_close(struct net_device *dev) |
| 1894 | { |
| 1895 | struct netdev_private *np = netdev_priv(dev); |
| 1896 | void __iomem *ioaddr = np->mem; |
| 1897 | int i; |
| 1898 | |
| 1899 | netif_stop_queue(dev); |
| 1900 | |
| 1901 | /* Disable interrupts by clearing the interrupt mask. */ |
| 1902 | iowrite32(0x0000, ioaddr + IMR); |
| 1903 | |
| 1904 | /* Stop the chip's Tx and Rx processes. */ |
| 1905 | stop_nic_rxtx(ioaddr, 0); |
| 1906 | |
| 1907 | del_timer_sync(&np->timer); |
| 1908 | del_timer_sync(&np->reset_timer); |
| 1909 | |
Francois Romieu | 436dfc4 | 2012-03-09 15:35:40 +0100 | [diff] [blame] | 1910 | free_irq(np->pci_dev->irq, dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1911 | |
| 1912 | /* Free all the skbuffs in the Rx queue. */ |
| 1913 | for (i = 0; i < RX_RING_SIZE; i++) { |
| 1914 | struct sk_buff *skb = np->rx_ring[i].skbuff; |
| 1915 | |
| 1916 | np->rx_ring[i].status = 0; |
| 1917 | if (skb) { |
| 1918 | pci_unmap_single(np->pci_dev, np->rx_ring[i].buffer, |
| 1919 | np->rx_buf_sz, PCI_DMA_FROMDEVICE); |
| 1920 | dev_kfree_skb(skb); |
| 1921 | np->rx_ring[i].skbuff = NULL; |
| 1922 | } |
| 1923 | } |
| 1924 | |
| 1925 | for (i = 0; i < TX_RING_SIZE; i++) { |
| 1926 | struct sk_buff *skb = np->tx_ring[i].skbuff; |
| 1927 | |
| 1928 | if (skb) { |
| 1929 | pci_unmap_single(np->pci_dev, np->tx_ring[i].buffer, |
| 1930 | skb->len, PCI_DMA_TODEVICE); |
| 1931 | dev_kfree_skb(skb); |
| 1932 | np->tx_ring[i].skbuff = NULL; |
| 1933 | } |
| 1934 | } |
| 1935 | |
| 1936 | return 0; |
| 1937 | } |
| 1938 | |
Benoit Taine | 9baa3c3 | 2014-08-08 15:56:03 +0200 | [diff] [blame] | 1939 | static const struct pci_device_id fealnx_pci_tbl[] = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1940 | {0x1516, 0x0800, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, |
| 1941 | {0x1516, 0x0803, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1}, |
| 1942 | {0x1516, 0x0891, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 2}, |
| 1943 | {} /* terminate list */ |
| 1944 | }; |
| 1945 | MODULE_DEVICE_TABLE(pci, fealnx_pci_tbl); |
| 1946 | |
| 1947 | |
| 1948 | static struct pci_driver fealnx_driver = { |
| 1949 | .name = "fealnx", |
| 1950 | .id_table = fealnx_pci_tbl, |
| 1951 | .probe = fealnx_init_one, |
Bill Pemberton | a0a4efe | 2012-12-03 09:24:09 -0500 | [diff] [blame] | 1952 | .remove = fealnx_remove_one, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1953 | }; |
| 1954 | |
| 1955 | static int __init fealnx_init(void) |
| 1956 | { |
| 1957 | /* when a module, this is printed whether or not devices are found in probe */ |
| 1958 | #ifdef MODULE |
| 1959 | printk(version); |
| 1960 | #endif |
| 1961 | |
Jeff Garzik | 2991762 | 2006-08-19 17:48:59 -0400 | [diff] [blame] | 1962 | return pci_register_driver(&fealnx_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1963 | } |
| 1964 | |
| 1965 | static void __exit fealnx_exit(void) |
| 1966 | { |
| 1967 | pci_unregister_driver(&fealnx_driver); |
| 1968 | } |
| 1969 | |
| 1970 | module_init(fealnx_init); |
| 1971 | module_exit(fealnx_exit); |