Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* yellowfin.c: A Packet Engines G-NIC ethernet driver for linux. */ |
| 2 | /* |
| 3 | Written 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 Packet Engines G-NIC PCI Gigabit Ethernet adapter. |
| 13 | It also supports the Symbios Logic version of the same chip core. |
| 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 | Support and updates available at |
| 21 | http://www.scyld.com/network/yellowfin.html |
Jeff Garzik | 03a8c66 | 2006-06-27 07:57:22 -0400 | [diff] [blame] | 22 | [link no longer provides useful info -jgarzik] |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 23 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 24 | */ |
| 25 | |
| 26 | #define DRV_NAME "yellowfin" |
Andy Gospodarek | d5b2069 | 2006-09-11 17:39:18 -0400 | [diff] [blame] | 27 | #define DRV_VERSION "2.1" |
| 28 | #define DRV_RELDATE "Sep 11, 2006" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 29 | |
| 30 | #define PFX DRV_NAME ": " |
| 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 | /* Maximum events (Rx packets, etc.) to handle at each interrupt. */ |
| 37 | static int max_interrupt_work = 20; |
| 38 | static int mtu; |
| 39 | #ifdef YF_PROTOTYPE /* Support for prototype hardware errata. */ |
| 40 | /* System-wide count of bogus-rx frames. */ |
| 41 | static int bogus_rx; |
| 42 | static int dma_ctrl = 0x004A0263; /* Constrained by errata */ |
| 43 | static int fifo_cfg = 0x0020; /* Bypass external Tx FIFO. */ |
| 44 | #elif defined(YF_NEW) /* A future perfect board :->. */ |
| 45 | static int dma_ctrl = 0x00CAC277; /* Override when loading module! */ |
| 46 | static int fifo_cfg = 0x0028; |
| 47 | #else |
Arjan van de Ven | f71e130 | 2006-03-03 21:33:57 -0500 | [diff] [blame] | 48 | static const int dma_ctrl = 0x004A0263; /* Constrained by errata */ |
| 49 | static const int fifo_cfg = 0x0020; /* Bypass external Tx FIFO. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 50 | #endif |
| 51 | |
| 52 | /* Set the copy breakpoint for the copy-only-tiny-frames scheme. |
| 53 | Setting to > 1514 effectively disables this feature. */ |
| 54 | static int rx_copybreak; |
| 55 | |
| 56 | /* Used to pass the media type, etc. |
| 57 | No media types are currently defined. These exist for driver |
| 58 | interoperability. |
| 59 | */ |
| 60 | #define MAX_UNITS 8 /* More are supported, limit only on options */ |
| 61 | static int options[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1}; |
| 62 | static int full_duplex[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1}; |
| 63 | |
| 64 | /* Do ugly workaround for GX server chipset errata. */ |
| 65 | static int gx_fix; |
| 66 | |
| 67 | /* Operational parameters that are set at compile time. */ |
| 68 | |
| 69 | /* Keep the ring sizes a power of two for efficiency. |
| 70 | Making the Tx ring too long decreases the effectiveness of channel |
| 71 | bonding and packet priority. |
| 72 | There are no ill effects from too-large receive rings. */ |
| 73 | #define TX_RING_SIZE 16 |
| 74 | #define TX_QUEUE_SIZE 12 /* Must be > 4 && <= TX_RING_SIZE */ |
| 75 | #define RX_RING_SIZE 64 |
| 76 | #define STATUS_TOTAL_SIZE TX_RING_SIZE*sizeof(struct tx_status_words) |
| 77 | #define TX_TOTAL_SIZE 2*TX_RING_SIZE*sizeof(struct yellowfin_desc) |
| 78 | #define RX_TOTAL_SIZE RX_RING_SIZE*sizeof(struct yellowfin_desc) |
| 79 | |
| 80 | /* Operational parameters that usually are not changed. */ |
| 81 | /* Time in jiffies before concluding the transmitter is hung. */ |
| 82 | #define TX_TIMEOUT (2*HZ) |
| 83 | #define PKT_BUF_SZ 1536 /* Size of each temporary Rx buffer.*/ |
| 84 | |
| 85 | #define yellowfin_debug debug |
| 86 | |
| 87 | #include <linux/module.h> |
| 88 | #include <linux/kernel.h> |
| 89 | #include <linux/string.h> |
| 90 | #include <linux/timer.h> |
| 91 | #include <linux/errno.h> |
| 92 | #include <linux/ioport.h> |
| 93 | #include <linux/slab.h> |
| 94 | #include <linux/interrupt.h> |
| 95 | #include <linux/pci.h> |
| 96 | #include <linux/init.h> |
| 97 | #include <linux/mii.h> |
| 98 | #include <linux/netdevice.h> |
| 99 | #include <linux/etherdevice.h> |
| 100 | #include <linux/skbuff.h> |
| 101 | #include <linux/ethtool.h> |
| 102 | #include <linux/crc32.h> |
| 103 | #include <linux/bitops.h> |
| 104 | #include <asm/uaccess.h> |
| 105 | #include <asm/processor.h> /* Processor type for cache alignment. */ |
| 106 | #include <asm/unaligned.h> |
| 107 | #include <asm/io.h> |
| 108 | |
| 109 | /* These identify the driver base version and may not be removed. */ |
Stephen Hemminger | 7285484 | 2009-02-26 10:19:27 +0000 | [diff] [blame] | 110 | static const char version[] __devinitconst = |
| 111 | KERN_INFO DRV_NAME ".c:v1.05 1/09/2001 Written by Donald Becker <becker@scyld.com>\n" |
| 112 | KERN_INFO " (unofficial 2.4.x port, " DRV_VERSION ", " DRV_RELDATE ")\n"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 113 | |
| 114 | MODULE_AUTHOR("Donald Becker <becker@scyld.com>"); |
| 115 | MODULE_DESCRIPTION("Packet Engines Yellowfin G-NIC Gigabit Ethernet driver"); |
| 116 | MODULE_LICENSE("GPL"); |
| 117 | |
| 118 | module_param(max_interrupt_work, int, 0); |
| 119 | module_param(mtu, int, 0); |
| 120 | module_param(debug, int, 0); |
| 121 | module_param(rx_copybreak, int, 0); |
| 122 | module_param_array(options, int, NULL, 0); |
| 123 | module_param_array(full_duplex, int, NULL, 0); |
| 124 | module_param(gx_fix, int, 0); |
| 125 | MODULE_PARM_DESC(max_interrupt_work, "G-NIC maximum events handled per interrupt"); |
| 126 | MODULE_PARM_DESC(mtu, "G-NIC MTU (all boards)"); |
| 127 | MODULE_PARM_DESC(debug, "G-NIC debug level (0-7)"); |
| 128 | MODULE_PARM_DESC(rx_copybreak, "G-NIC copy breakpoint for copy-only-tiny-frames"); |
| 129 | MODULE_PARM_DESC(options, "G-NIC: Bits 0-3: media type, bit 17: full duplex"); |
| 130 | MODULE_PARM_DESC(full_duplex, "G-NIC full duplex setting(s) (1)"); |
| 131 | MODULE_PARM_DESC(gx_fix, "G-NIC: enable GX server chipset bug workaround (0-1)"); |
| 132 | |
| 133 | /* |
| 134 | Theory of Operation |
| 135 | |
| 136 | I. Board Compatibility |
| 137 | |
| 138 | This device driver is designed for the Packet Engines "Yellowfin" Gigabit |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 139 | Ethernet adapter. The G-NIC 64-bit PCI card is supported, as well as the |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 140 | Symbios 53C885E dual function chip. |
| 141 | |
| 142 | II. Board-specific settings |
| 143 | |
| 144 | PCI bus devices are configured by the system at boot time, so no jumpers |
| 145 | need to be set on the board. The system BIOS preferably should assign the |
| 146 | PCI INTA signal to an otherwise unused system IRQ line. |
| 147 | Note: Kernel versions earlier than 1.3.73 do not support shared PCI |
| 148 | interrupt lines. |
| 149 | |
| 150 | III. Driver operation |
| 151 | |
| 152 | IIIa. Ring buffers |
| 153 | |
| 154 | The Yellowfin uses the Descriptor Based DMA Architecture specified by Apple. |
| 155 | This is a descriptor list scheme similar to that used by the EEPro100 and |
| 156 | Tulip. This driver uses two statically allocated fixed-size descriptor lists |
| 157 | formed into rings by a branch from the final descriptor to the beginning of |
| 158 | the list. The ring sizes are set at compile time by RX/TX_RING_SIZE. |
| 159 | |
| 160 | The driver allocates full frame size skbuffs for the Rx ring buffers at |
| 161 | open() time and passes the skb->data field to the Yellowfin as receive data |
| 162 | buffers. When an incoming frame is less than RX_COPYBREAK bytes long, |
| 163 | a fresh skbuff is allocated and the frame is copied to the new skbuff. |
| 164 | When the incoming frame is larger, the skbuff is passed directly up the |
| 165 | protocol stack and replaced by a newly allocated skbuff. |
| 166 | |
| 167 | The RX_COPYBREAK value is chosen to trade-off the memory wasted by |
| 168 | using a full-sized skbuff for small frames vs. the copying costs of larger |
| 169 | frames. For small frames the copying cost is negligible (esp. considering |
| 170 | that we are pre-loading the cache with immediately useful header |
| 171 | information). For large frames the copying cost is non-trivial, and the |
| 172 | larger copy might flush the cache of useful data. |
| 173 | |
| 174 | IIIC. Synchronization |
| 175 | |
| 176 | The driver runs as two independent, single-threaded flows of control. One |
| 177 | is the send-packet routine, which enforces single-threaded use by the |
| 178 | dev->tbusy flag. The other thread is the interrupt handler, which is single |
| 179 | threaded by the hardware and other software. |
| 180 | |
| 181 | The send packet thread has partial control over the Tx ring and 'dev->tbusy' |
| 182 | flag. It sets the tbusy flag whenever it's queuing a Tx packet. If the next |
| 183 | queue slot is empty, it clears the tbusy flag when finished otherwise it sets |
| 184 | the 'yp->tx_full' flag. |
| 185 | |
| 186 | The interrupt handler has exclusive control over the Rx ring and records stats |
| 187 | from the Tx ring. After reaping the stats, it marks the Tx queue entry as |
| 188 | empty by incrementing the dirty_tx mark. Iff the 'yp->tx_full' flag is set, it |
| 189 | clears both the tx_full and tbusy flags. |
| 190 | |
| 191 | IV. Notes |
| 192 | |
| 193 | Thanks to Kim Stearns of Packet Engines for providing a pair of G-NIC boards. |
| 194 | Thanks to Bruce Faust of Digitalscape for providing both their SYM53C885 board |
| 195 | and an AlphaStation to verifty the Alpha port! |
| 196 | |
| 197 | IVb. References |
| 198 | |
| 199 | Yellowfin Engineering Design Specification, 4/23/97 Preliminary/Confidential |
| 200 | Symbios SYM53C885 PCI-SCSI/Fast Ethernet Multifunction Controller Preliminary |
| 201 | Data Manual v3.0 |
| 202 | http://cesdis.gsfc.nasa.gov/linux/misc/NWay.html |
| 203 | http://cesdis.gsfc.nasa.gov/linux/misc/100mbps.html |
| 204 | |
| 205 | IVc. Errata |
| 206 | |
| 207 | See Packet Engines confidential appendix (prototype chips only). |
| 208 | */ |
| 209 | |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 210 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 211 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 212 | enum capability_flags { |
| 213 | HasMII=1, FullTxStatus=2, IsGigabit=4, HasMulticastBug=8, FullRxStatus=16, |
| 214 | HasMACAddrBug=32, /* Only on early revs. */ |
| 215 | DontUseEeprom=64, /* Don't read the MAC from the EEPROm. */ |
| 216 | }; |
Jeff Garzik | c3d8e68 | 2006-06-27 08:54:34 -0400 | [diff] [blame] | 217 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 218 | /* The PCI I/O space extent. */ |
Jeff Garzik | c3d8e68 | 2006-06-27 08:54:34 -0400 | [diff] [blame] | 219 | enum { |
| 220 | YELLOWFIN_SIZE = 0x100, |
| 221 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 222 | |
| 223 | struct pci_id_info { |
| 224 | const char *name; |
| 225 | struct match_info { |
| 226 | int pci, pci_mask, subsystem, subsystem_mask; |
| 227 | int revision, revision_mask; /* Only 8 bits. */ |
| 228 | } id; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 229 | int drv_flags; /* Driver use, intended as capability flags. */ |
| 230 | }; |
| 231 | |
Arjan van de Ven | f71e130 | 2006-03-03 21:33:57 -0500 | [diff] [blame] | 232 | static const struct pci_id_info pci_id_tbl[] = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 233 | {"Yellowfin G-NIC Gigabit Ethernet", { 0x07021000, 0xffffffff}, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 234 | FullTxStatus | IsGigabit | HasMulticastBug | HasMACAddrBug | DontUseEeprom}, |
| 235 | {"Symbios SYM83C885", { 0x07011000, 0xffffffff}, |
Jeff Garzik | c3d8e68 | 2006-06-27 08:54:34 -0400 | [diff] [blame] | 236 | HasMII | DontUseEeprom }, |
Jeff Garzik | 1f1bd5f | 2006-06-26 23:47:50 -0400 | [diff] [blame] | 237 | { } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 238 | }; |
| 239 | |
Jeff Garzik | 1f1bd5f | 2006-06-26 23:47:50 -0400 | [diff] [blame] | 240 | static const struct pci_device_id yellowfin_pci_tbl[] = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 241 | { 0x1000, 0x0702, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, |
| 242 | { 0x1000, 0x0701, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1 }, |
Jeff Garzik | 1f1bd5f | 2006-06-26 23:47:50 -0400 | [diff] [blame] | 243 | { } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 244 | }; |
| 245 | MODULE_DEVICE_TABLE (pci, yellowfin_pci_tbl); |
| 246 | |
| 247 | |
| 248 | /* Offsets to the Yellowfin registers. Various sizes and alignments. */ |
| 249 | enum yellowfin_offsets { |
| 250 | TxCtrl=0x00, TxStatus=0x04, TxPtr=0x0C, |
| 251 | TxIntrSel=0x10, TxBranchSel=0x14, TxWaitSel=0x18, |
| 252 | RxCtrl=0x40, RxStatus=0x44, RxPtr=0x4C, |
| 253 | RxIntrSel=0x50, RxBranchSel=0x54, RxWaitSel=0x58, |
| 254 | EventStatus=0x80, IntrEnb=0x82, IntrClear=0x84, IntrStatus=0x86, |
| 255 | ChipRev=0x8C, DMACtrl=0x90, TxThreshold=0x94, |
| 256 | Cnfg=0xA0, FrameGap0=0xA2, FrameGap1=0xA4, |
| 257 | MII_Cmd=0xA6, MII_Addr=0xA8, MII_Wr_Data=0xAA, MII_Rd_Data=0xAC, |
| 258 | MII_Status=0xAE, |
| 259 | RxDepth=0xB8, FlowCtrl=0xBC, |
| 260 | AddrMode=0xD0, StnAddr=0xD2, HashTbl=0xD8, FIFOcfg=0xF8, |
| 261 | EEStatus=0xF0, EECtrl=0xF1, EEAddr=0xF2, EERead=0xF3, EEWrite=0xF4, |
| 262 | EEFeature=0xF5, |
| 263 | }; |
| 264 | |
| 265 | /* The Yellowfin Rx and Tx buffer descriptors. |
| 266 | Elements are written as 32 bit for endian portability. */ |
| 267 | struct yellowfin_desc { |
Al Viro | e5a3142 | 2007-12-22 17:53:02 +0000 | [diff] [blame] | 268 | __le32 dbdma_cmd; |
| 269 | __le32 addr; |
| 270 | __le32 branch_addr; |
| 271 | __le32 result_status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 272 | }; |
| 273 | |
| 274 | struct tx_status_words { |
| 275 | #ifdef __BIG_ENDIAN |
| 276 | u16 tx_errs; |
| 277 | u16 tx_cnt; |
| 278 | u16 paused; |
| 279 | u16 total_tx_cnt; |
| 280 | #else /* Little endian chips. */ |
| 281 | u16 tx_cnt; |
| 282 | u16 tx_errs; |
| 283 | u16 total_tx_cnt; |
| 284 | u16 paused; |
| 285 | #endif /* __BIG_ENDIAN */ |
| 286 | }; |
| 287 | |
| 288 | /* Bits in yellowfin_desc.cmd */ |
| 289 | enum desc_cmd_bits { |
| 290 | CMD_TX_PKT=0x10000000, CMD_RX_BUF=0x20000000, CMD_TXSTATUS=0x30000000, |
| 291 | CMD_NOP=0x60000000, CMD_STOP=0x70000000, |
| 292 | BRANCH_ALWAYS=0x0C0000, INTR_ALWAYS=0x300000, WAIT_ALWAYS=0x030000, |
| 293 | BRANCH_IFTRUE=0x040000, |
| 294 | }; |
| 295 | |
| 296 | /* Bits in yellowfin_desc.status */ |
| 297 | enum desc_status_bits { RX_EOP=0x0040, }; |
| 298 | |
| 299 | /* Bits in the interrupt status/mask registers. */ |
| 300 | enum intr_status_bits { |
| 301 | IntrRxDone=0x01, IntrRxInvalid=0x02, IntrRxPCIFault=0x04,IntrRxPCIErr=0x08, |
| 302 | IntrTxDone=0x10, IntrTxInvalid=0x20, IntrTxPCIFault=0x40,IntrTxPCIErr=0x80, |
| 303 | IntrEarlyRx=0x100, IntrWakeup=0x200, }; |
| 304 | |
| 305 | #define PRIV_ALIGN 31 /* Required alignment mask */ |
| 306 | #define MII_CNT 4 |
| 307 | struct yellowfin_private { |
| 308 | /* Descriptor rings first for alignment. |
| 309 | Tx requires a second descriptor for status. */ |
| 310 | struct yellowfin_desc *rx_ring; |
| 311 | struct yellowfin_desc *tx_ring; |
| 312 | struct sk_buff* rx_skbuff[RX_RING_SIZE]; |
| 313 | struct sk_buff* tx_skbuff[TX_RING_SIZE]; |
| 314 | dma_addr_t rx_ring_dma; |
| 315 | dma_addr_t tx_ring_dma; |
| 316 | |
| 317 | struct tx_status_words *tx_status; |
| 318 | dma_addr_t tx_status_dma; |
| 319 | |
| 320 | struct timer_list timer; /* Media selection timer. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 321 | /* Frequently used and paired value: keep adjacent for cache effect. */ |
| 322 | int chip_id, drv_flags; |
| 323 | struct pci_dev *pci_dev; |
| 324 | unsigned int cur_rx, dirty_rx; /* Producer/consumer ring indices */ |
| 325 | unsigned int rx_buf_sz; /* Based on MTU+slack. */ |
| 326 | struct tx_status_words *tx_tail_desc; |
| 327 | unsigned int cur_tx, dirty_tx; |
| 328 | int tx_threshold; |
| 329 | unsigned int tx_full:1; /* The Tx queue is full. */ |
| 330 | unsigned int full_duplex:1; /* Full-duplex operation requested. */ |
| 331 | unsigned int duplex_lock:1; |
| 332 | unsigned int medialock:1; /* Do not sense media. */ |
| 333 | unsigned int default_port:4; /* Last dev->if_port value. */ |
| 334 | /* MII transceiver section. */ |
| 335 | int mii_cnt; /* MII device addresses. */ |
| 336 | u16 advertising; /* NWay media advertisement */ |
| 337 | unsigned char phys[MII_CNT]; /* MII device addresses, only first one used */ |
| 338 | spinlock_t lock; |
| 339 | void __iomem *base; |
| 340 | }; |
| 341 | |
| 342 | static int read_eeprom(void __iomem *ioaddr, int location); |
| 343 | static int mdio_read(void __iomem *ioaddr, int phy_id, int location); |
| 344 | static void mdio_write(void __iomem *ioaddr, int phy_id, int location, int value); |
| 345 | static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); |
| 346 | static int yellowfin_open(struct net_device *dev); |
| 347 | static void yellowfin_timer(unsigned long data); |
| 348 | static void yellowfin_tx_timeout(struct net_device *dev); |
| 349 | static void yellowfin_init_ring(struct net_device *dev); |
| 350 | static int yellowfin_start_xmit(struct sk_buff *skb, struct net_device *dev); |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 351 | static irqreturn_t yellowfin_interrupt(int irq, void *dev_instance); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 352 | static int yellowfin_rx(struct net_device *dev); |
| 353 | static void yellowfin_error(struct net_device *dev, int intr_status); |
| 354 | static int yellowfin_close(struct net_device *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 355 | static void set_rx_mode(struct net_device *dev); |
Jeff Garzik | 7282d49 | 2006-09-13 14:30:00 -0400 | [diff] [blame] | 356 | static const struct ethtool_ops ethtool_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 357 | |
Stephen Hemminger | bfd82c3 | 2008-11-21 17:35:16 -0800 | [diff] [blame] | 358 | static const struct net_device_ops netdev_ops = { |
| 359 | .ndo_open = yellowfin_open, |
| 360 | .ndo_stop = yellowfin_close, |
| 361 | .ndo_start_xmit = yellowfin_start_xmit, |
| 362 | .ndo_set_multicast_list = set_rx_mode, |
| 363 | .ndo_change_mtu = eth_change_mtu, |
| 364 | .ndo_validate_addr = eth_validate_addr, |
Stephen Hemminger | fe96aaa | 2009-01-09 11:13:14 +0000 | [diff] [blame] | 365 | .ndo_set_mac_address = eth_mac_addr, |
Stephen Hemminger | bfd82c3 | 2008-11-21 17:35:16 -0800 | [diff] [blame] | 366 | .ndo_do_ioctl = netdev_ioctl, |
| 367 | .ndo_tx_timeout = yellowfin_tx_timeout, |
| 368 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 369 | |
| 370 | static int __devinit yellowfin_init_one(struct pci_dev *pdev, |
| 371 | const struct pci_device_id *ent) |
| 372 | { |
| 373 | struct net_device *dev; |
| 374 | struct yellowfin_private *np; |
| 375 | int irq; |
| 376 | int chip_idx = ent->driver_data; |
| 377 | static int find_cnt; |
| 378 | void __iomem *ioaddr; |
| 379 | int i, option = find_cnt < MAX_UNITS ? options[find_cnt] : 0; |
| 380 | int drv_flags = pci_id_tbl[chip_idx].drv_flags; |
| 381 | void *ring_space; |
| 382 | dma_addr_t ring_dma; |
| 383 | #ifdef USE_IO_OPS |
| 384 | int bar = 0; |
| 385 | #else |
| 386 | int bar = 1; |
| 387 | #endif |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 388 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 389 | /* when built into the kernel, we only print version if device is found */ |
| 390 | #ifndef MODULE |
| 391 | static int printed_version; |
| 392 | if (!printed_version++) |
| 393 | printk(version); |
| 394 | #endif |
| 395 | |
| 396 | i = pci_enable_device(pdev); |
| 397 | if (i) return i; |
| 398 | |
| 399 | dev = alloc_etherdev(sizeof(*np)); |
| 400 | if (!dev) { |
| 401 | printk (KERN_ERR PFX "cannot allocate ethernet device\n"); |
| 402 | return -ENOMEM; |
| 403 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 404 | SET_NETDEV_DEV(dev, &pdev->dev); |
| 405 | |
| 406 | np = netdev_priv(dev); |
| 407 | |
| 408 | if (pci_request_regions(pdev, DRV_NAME)) |
| 409 | goto err_out_free_netdev; |
| 410 | |
| 411 | pci_set_master (pdev); |
| 412 | |
| 413 | ioaddr = pci_iomap(pdev, bar, YELLOWFIN_SIZE); |
| 414 | if (!ioaddr) |
| 415 | goto err_out_free_res; |
| 416 | |
| 417 | irq = pdev->irq; |
| 418 | |
| 419 | if (drv_flags & DontUseEeprom) |
| 420 | for (i = 0; i < 6; i++) |
| 421 | dev->dev_addr[i] = ioread8(ioaddr + StnAddr + i); |
| 422 | else { |
| 423 | int ee_offset = (read_eeprom(ioaddr, 6) == 0xff ? 0x100 : 0); |
| 424 | for (i = 0; i < 6; i++) |
| 425 | dev->dev_addr[i] = read_eeprom(ioaddr, ee_offset + i); |
| 426 | } |
| 427 | |
| 428 | /* Reset the chip. */ |
| 429 | iowrite32(0x80000000, ioaddr + DMACtrl); |
| 430 | |
| 431 | dev->base_addr = (unsigned long)ioaddr; |
| 432 | dev->irq = irq; |
| 433 | |
| 434 | pci_set_drvdata(pdev, dev); |
| 435 | spin_lock_init(&np->lock); |
| 436 | |
| 437 | np->pci_dev = pdev; |
| 438 | np->chip_id = chip_idx; |
| 439 | np->drv_flags = drv_flags; |
| 440 | np->base = ioaddr; |
| 441 | |
| 442 | ring_space = pci_alloc_consistent(pdev, TX_TOTAL_SIZE, &ring_dma); |
| 443 | if (!ring_space) |
| 444 | goto err_out_cleardev; |
| 445 | np->tx_ring = (struct yellowfin_desc *)ring_space; |
| 446 | np->tx_ring_dma = ring_dma; |
| 447 | |
| 448 | ring_space = pci_alloc_consistent(pdev, RX_TOTAL_SIZE, &ring_dma); |
| 449 | if (!ring_space) |
| 450 | goto err_out_unmap_tx; |
| 451 | np->rx_ring = (struct yellowfin_desc *)ring_space; |
| 452 | np->rx_ring_dma = ring_dma; |
| 453 | |
| 454 | ring_space = pci_alloc_consistent(pdev, STATUS_TOTAL_SIZE, &ring_dma); |
| 455 | if (!ring_space) |
| 456 | goto err_out_unmap_rx; |
| 457 | np->tx_status = (struct tx_status_words *)ring_space; |
| 458 | np->tx_status_dma = ring_dma; |
| 459 | |
| 460 | if (dev->mem_start) |
| 461 | option = dev->mem_start; |
| 462 | |
| 463 | /* The lower four bits are the media type. */ |
| 464 | if (option > 0) { |
| 465 | if (option & 0x200) |
| 466 | np->full_duplex = 1; |
| 467 | np->default_port = option & 15; |
| 468 | if (np->default_port) |
| 469 | np->medialock = 1; |
| 470 | } |
| 471 | if (find_cnt < MAX_UNITS && full_duplex[find_cnt] > 0) |
| 472 | np->full_duplex = 1; |
| 473 | |
| 474 | if (np->full_duplex) |
| 475 | np->duplex_lock = 1; |
| 476 | |
| 477 | /* The Yellowfin-specific entries in the device structure. */ |
Stephen Hemminger | bfd82c3 | 2008-11-21 17:35:16 -0800 | [diff] [blame] | 478 | dev->netdev_ops = &netdev_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 479 | SET_ETHTOOL_OPS(dev, ðtool_ops); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 480 | dev->watchdog_timeo = TX_TIMEOUT; |
| 481 | |
| 482 | if (mtu) |
| 483 | dev->mtu = mtu; |
| 484 | |
| 485 | i = register_netdev(dev); |
| 486 | if (i) |
| 487 | goto err_out_unmap_status; |
| 488 | |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 489 | printk(KERN_INFO "%s: %s type %8x at %p, %pM, IRQ %d.\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 490 | dev->name, pci_id_tbl[chip_idx].name, |
Joe Perches | 0795af5 | 2007-10-03 17:59:30 -0700 | [diff] [blame] | 491 | ioread32(ioaddr + ChipRev), ioaddr, |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 492 | dev->dev_addr, irq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 493 | |
| 494 | if (np->drv_flags & HasMII) { |
| 495 | int phy, phy_idx = 0; |
| 496 | for (phy = 0; phy < 32 && phy_idx < MII_CNT; phy++) { |
| 497 | int mii_status = mdio_read(ioaddr, phy, 1); |
| 498 | if (mii_status != 0xffff && mii_status != 0x0000) { |
| 499 | np->phys[phy_idx++] = phy; |
| 500 | np->advertising = mdio_read(ioaddr, phy, 4); |
| 501 | printk(KERN_INFO "%s: MII PHY found at address %d, status " |
| 502 | "0x%4.4x advertising %4.4x.\n", |
| 503 | dev->name, phy, mii_status, np->advertising); |
| 504 | } |
| 505 | } |
| 506 | np->mii_cnt = phy_idx; |
| 507 | } |
| 508 | |
| 509 | find_cnt++; |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 510 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 511 | return 0; |
| 512 | |
| 513 | err_out_unmap_status: |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 514 | pci_free_consistent(pdev, STATUS_TOTAL_SIZE, np->tx_status, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 515 | np->tx_status_dma); |
| 516 | err_out_unmap_rx: |
| 517 | pci_free_consistent(pdev, RX_TOTAL_SIZE, np->rx_ring, np->rx_ring_dma); |
| 518 | err_out_unmap_tx: |
| 519 | pci_free_consistent(pdev, TX_TOTAL_SIZE, np->tx_ring, np->tx_ring_dma); |
| 520 | err_out_cleardev: |
| 521 | pci_set_drvdata(pdev, NULL); |
| 522 | pci_iounmap(pdev, ioaddr); |
| 523 | err_out_free_res: |
| 524 | pci_release_regions(pdev); |
| 525 | err_out_free_netdev: |
| 526 | free_netdev (dev); |
| 527 | return -ENODEV; |
| 528 | } |
| 529 | |
| 530 | static int __devinit read_eeprom(void __iomem *ioaddr, int location) |
| 531 | { |
| 532 | int bogus_cnt = 10000; /* Typical 33Mhz: 1050 ticks */ |
| 533 | |
| 534 | iowrite8(location, ioaddr + EEAddr); |
| 535 | iowrite8(0x30 | ((location >> 8) & 7), ioaddr + EECtrl); |
| 536 | while ((ioread8(ioaddr + EEStatus) & 0x80) && --bogus_cnt > 0) |
| 537 | ; |
| 538 | return ioread8(ioaddr + EERead); |
| 539 | } |
| 540 | |
| 541 | /* MII Managemen Data I/O accesses. |
| 542 | These routines assume the MDIO controller is idle, and do not exit until |
| 543 | the command is finished. */ |
| 544 | |
| 545 | static int mdio_read(void __iomem *ioaddr, int phy_id, int location) |
| 546 | { |
| 547 | int i; |
| 548 | |
| 549 | iowrite16((phy_id<<8) + location, ioaddr + MII_Addr); |
| 550 | iowrite16(1, ioaddr + MII_Cmd); |
| 551 | for (i = 10000; i >= 0; i--) |
| 552 | if ((ioread16(ioaddr + MII_Status) & 1) == 0) |
| 553 | break; |
| 554 | return ioread16(ioaddr + MII_Rd_Data); |
| 555 | } |
| 556 | |
| 557 | static void mdio_write(void __iomem *ioaddr, int phy_id, int location, int value) |
| 558 | { |
| 559 | int i; |
| 560 | |
| 561 | iowrite16((phy_id<<8) + location, ioaddr + MII_Addr); |
| 562 | iowrite16(value, ioaddr + MII_Wr_Data); |
| 563 | |
| 564 | /* Wait for the command to finish. */ |
| 565 | for (i = 10000; i >= 0; i--) |
| 566 | if ((ioread16(ioaddr + MII_Status) & 1) == 0) |
| 567 | break; |
| 568 | return; |
| 569 | } |
| 570 | |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 571 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 572 | static int yellowfin_open(struct net_device *dev) |
| 573 | { |
| 574 | struct yellowfin_private *yp = netdev_priv(dev); |
| 575 | void __iomem *ioaddr = yp->base; |
| 576 | int i; |
| 577 | |
| 578 | /* Reset the chip. */ |
| 579 | iowrite32(0x80000000, ioaddr + DMACtrl); |
| 580 | |
Thomas Gleixner | 1fb9df5 | 2006-07-01 19:29:39 -0700 | [diff] [blame] | 581 | i = request_irq(dev->irq, &yellowfin_interrupt, IRQF_SHARED, dev->name, dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 582 | if (i) return i; |
| 583 | |
| 584 | if (yellowfin_debug > 1) |
| 585 | printk(KERN_DEBUG "%s: yellowfin_open() irq %d.\n", |
| 586 | dev->name, dev->irq); |
| 587 | |
| 588 | yellowfin_init_ring(dev); |
| 589 | |
| 590 | iowrite32(yp->rx_ring_dma, ioaddr + RxPtr); |
| 591 | iowrite32(yp->tx_ring_dma, ioaddr + TxPtr); |
| 592 | |
| 593 | for (i = 0; i < 6; i++) |
| 594 | iowrite8(dev->dev_addr[i], ioaddr + StnAddr + i); |
| 595 | |
| 596 | /* Set up various condition 'select' registers. |
| 597 | There are no options here. */ |
| 598 | iowrite32(0x00800080, ioaddr + TxIntrSel); /* Interrupt on Tx abort */ |
| 599 | iowrite32(0x00800080, ioaddr + TxBranchSel); /* Branch on Tx abort */ |
| 600 | iowrite32(0x00400040, ioaddr + TxWaitSel); /* Wait on Tx status */ |
| 601 | iowrite32(0x00400040, ioaddr + RxIntrSel); /* Interrupt on Rx done */ |
| 602 | iowrite32(0x00400040, ioaddr + RxBranchSel); /* Branch on Rx error */ |
| 603 | iowrite32(0x00400040, ioaddr + RxWaitSel); /* Wait on Rx done */ |
| 604 | |
| 605 | /* Initialize other registers: with so many this eventually this will |
| 606 | converted to an offset/value list. */ |
| 607 | iowrite32(dma_ctrl, ioaddr + DMACtrl); |
| 608 | iowrite16(fifo_cfg, ioaddr + FIFOcfg); |
| 609 | /* Enable automatic generation of flow control frames, period 0xffff. */ |
| 610 | iowrite32(0x0030FFFF, ioaddr + FlowCtrl); |
| 611 | |
| 612 | yp->tx_threshold = 32; |
| 613 | iowrite32(yp->tx_threshold, ioaddr + TxThreshold); |
| 614 | |
| 615 | if (dev->if_port == 0) |
| 616 | dev->if_port = yp->default_port; |
| 617 | |
| 618 | netif_start_queue(dev); |
| 619 | |
| 620 | /* Setting the Rx mode will start the Rx process. */ |
| 621 | if (yp->drv_flags & IsGigabit) { |
| 622 | /* We are always in full-duplex mode with gigabit! */ |
| 623 | yp->full_duplex = 1; |
| 624 | iowrite16(0x01CF, ioaddr + Cnfg); |
| 625 | } else { |
| 626 | iowrite16(0x0018, ioaddr + FrameGap0); /* 0060/4060 for non-MII 10baseT */ |
| 627 | iowrite16(0x1018, ioaddr + FrameGap1); |
| 628 | iowrite16(0x101C | (yp->full_duplex ? 2 : 0), ioaddr + Cnfg); |
| 629 | } |
| 630 | set_rx_mode(dev); |
| 631 | |
| 632 | /* Enable interrupts by setting the interrupt mask. */ |
| 633 | iowrite16(0x81ff, ioaddr + IntrEnb); /* See enum intr_status_bits */ |
| 634 | iowrite16(0x0000, ioaddr + EventStatus); /* Clear non-interrupting events */ |
| 635 | iowrite32(0x80008000, ioaddr + RxCtrl); /* Start Rx and Tx channels. */ |
| 636 | iowrite32(0x80008000, ioaddr + TxCtrl); |
| 637 | |
| 638 | if (yellowfin_debug > 2) { |
| 639 | printk(KERN_DEBUG "%s: Done yellowfin_open().\n", |
| 640 | dev->name); |
| 641 | } |
| 642 | |
| 643 | /* Set the timer to check for link beat. */ |
| 644 | init_timer(&yp->timer); |
| 645 | yp->timer.expires = jiffies + 3*HZ; |
| 646 | yp->timer.data = (unsigned long)dev; |
| 647 | yp->timer.function = &yellowfin_timer; /* timer handler */ |
| 648 | add_timer(&yp->timer); |
| 649 | |
| 650 | return 0; |
| 651 | } |
| 652 | |
| 653 | static void yellowfin_timer(unsigned long data) |
| 654 | { |
| 655 | struct net_device *dev = (struct net_device *)data; |
| 656 | struct yellowfin_private *yp = netdev_priv(dev); |
| 657 | void __iomem *ioaddr = yp->base; |
| 658 | int next_tick = 60*HZ; |
| 659 | |
| 660 | if (yellowfin_debug > 3) { |
| 661 | printk(KERN_DEBUG "%s: Yellowfin timer tick, status %8.8x.\n", |
| 662 | dev->name, ioread16(ioaddr + IntrStatus)); |
| 663 | } |
| 664 | |
| 665 | if (yp->mii_cnt) { |
| 666 | int bmsr = mdio_read(ioaddr, yp->phys[0], MII_BMSR); |
| 667 | int lpa = mdio_read(ioaddr, yp->phys[0], MII_LPA); |
| 668 | int negotiated = lpa & yp->advertising; |
| 669 | if (yellowfin_debug > 1) |
| 670 | printk(KERN_DEBUG "%s: MII #%d status register is %4.4x, " |
| 671 | "link partner capability %4.4x.\n", |
| 672 | dev->name, yp->phys[0], bmsr, lpa); |
| 673 | |
| 674 | yp->full_duplex = mii_duplex(yp->duplex_lock, negotiated); |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 675 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 676 | iowrite16(0x101C | (yp->full_duplex ? 2 : 0), ioaddr + Cnfg); |
| 677 | |
| 678 | if (bmsr & BMSR_LSTATUS) |
| 679 | next_tick = 60*HZ; |
| 680 | else |
| 681 | next_tick = 3*HZ; |
| 682 | } |
| 683 | |
| 684 | yp->timer.expires = jiffies + next_tick; |
| 685 | add_timer(&yp->timer); |
| 686 | } |
| 687 | |
| 688 | static void yellowfin_tx_timeout(struct net_device *dev) |
| 689 | { |
| 690 | struct yellowfin_private *yp = netdev_priv(dev); |
| 691 | void __iomem *ioaddr = yp->base; |
| 692 | |
| 693 | printk(KERN_WARNING "%s: Yellowfin transmit timed out at %d/%d Tx " |
| 694 | "status %4.4x, Rx status %4.4x, resetting...\n", |
| 695 | dev->name, yp->cur_tx, yp->dirty_tx, |
| 696 | ioread32(ioaddr + TxStatus), ioread32(ioaddr + RxStatus)); |
| 697 | |
| 698 | /* Note: these should be KERN_DEBUG. */ |
| 699 | if (yellowfin_debug) { |
| 700 | int i; |
| 701 | printk(KERN_WARNING " Rx ring %p: ", yp->rx_ring); |
| 702 | for (i = 0; i < RX_RING_SIZE; i++) |
| 703 | printk(" %8.8x", yp->rx_ring[i].result_status); |
| 704 | printk("\n"KERN_WARNING" Tx ring %p: ", yp->tx_ring); |
| 705 | for (i = 0; i < TX_RING_SIZE; i++) |
| 706 | printk(" %4.4x /%8.8x", yp->tx_status[i].tx_errs, |
| 707 | yp->tx_ring[i].result_status); |
| 708 | printk("\n"); |
| 709 | } |
| 710 | |
| 711 | /* If the hardware is found to hang regularly, we will update the code |
| 712 | to reinitialize the chip here. */ |
| 713 | dev->if_port = 0; |
| 714 | |
| 715 | /* Wake the potentially-idle transmit channel. */ |
| 716 | iowrite32(0x10001000, yp->base + TxCtrl); |
| 717 | if (yp->cur_tx - yp->dirty_tx < TX_QUEUE_SIZE) |
| 718 | netif_wake_queue (dev); /* Typical path */ |
| 719 | |
Eric Dumazet | cdd0db0 | 2009-05-28 00:00:41 +0000 | [diff] [blame] | 720 | dev->trans_start = jiffies; /* prevent tx timeout */ |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 721 | dev->stats.tx_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 722 | } |
| 723 | |
| 724 | /* Initialize the Rx and Tx rings, along with various 'dev' bits. */ |
| 725 | static void yellowfin_init_ring(struct net_device *dev) |
| 726 | { |
| 727 | struct yellowfin_private *yp = netdev_priv(dev); |
| 728 | int i; |
| 729 | |
| 730 | yp->tx_full = 0; |
| 731 | yp->cur_rx = yp->cur_tx = 0; |
| 732 | yp->dirty_tx = 0; |
| 733 | |
| 734 | yp->rx_buf_sz = (dev->mtu <= 1500 ? PKT_BUF_SZ : dev->mtu + 32); |
| 735 | |
| 736 | for (i = 0; i < RX_RING_SIZE; i++) { |
| 737 | yp->rx_ring[i].dbdma_cmd = |
| 738 | cpu_to_le32(CMD_RX_BUF | INTR_ALWAYS | yp->rx_buf_sz); |
| 739 | yp->rx_ring[i].branch_addr = cpu_to_le32(yp->rx_ring_dma + |
| 740 | ((i+1)%RX_RING_SIZE)*sizeof(struct yellowfin_desc)); |
| 741 | } |
| 742 | |
| 743 | for (i = 0; i < RX_RING_SIZE; i++) { |
| 744 | struct sk_buff *skb = dev_alloc_skb(yp->rx_buf_sz); |
| 745 | yp->rx_skbuff[i] = skb; |
| 746 | if (skb == NULL) |
| 747 | break; |
| 748 | skb->dev = dev; /* Mark as being used by this device. */ |
| 749 | skb_reserve(skb, 2); /* 16 byte align the IP header. */ |
| 750 | yp->rx_ring[i].addr = cpu_to_le32(pci_map_single(yp->pci_dev, |
David S. Miller | 689be43 | 2005-06-28 15:25:31 -0700 | [diff] [blame] | 751 | skb->data, yp->rx_buf_sz, PCI_DMA_FROMDEVICE)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 752 | } |
| 753 | yp->rx_ring[i-1].dbdma_cmd = cpu_to_le32(CMD_STOP); |
| 754 | yp->dirty_rx = (unsigned int)(i - RX_RING_SIZE); |
| 755 | |
| 756 | #define NO_TXSTATS |
| 757 | #ifdef NO_TXSTATS |
| 758 | /* In this mode the Tx ring needs only a single descriptor. */ |
| 759 | for (i = 0; i < TX_RING_SIZE; i++) { |
| 760 | yp->tx_skbuff[i] = NULL; |
| 761 | yp->tx_ring[i].dbdma_cmd = cpu_to_le32(CMD_STOP); |
| 762 | yp->tx_ring[i].branch_addr = cpu_to_le32(yp->tx_ring_dma + |
| 763 | ((i+1)%TX_RING_SIZE)*sizeof(struct yellowfin_desc)); |
| 764 | } |
| 765 | /* Wrap ring */ |
| 766 | yp->tx_ring[--i].dbdma_cmd = cpu_to_le32(CMD_STOP | BRANCH_ALWAYS); |
| 767 | #else |
| 768 | { |
| 769 | int j; |
| 770 | |
| 771 | /* Tx ring needs a pair of descriptors, the second for the status. */ |
| 772 | for (i = 0; i < TX_RING_SIZE; i++) { |
| 773 | j = 2*i; |
| 774 | yp->tx_skbuff[i] = 0; |
| 775 | /* Branch on Tx error. */ |
| 776 | yp->tx_ring[j].dbdma_cmd = cpu_to_le32(CMD_STOP); |
| 777 | yp->tx_ring[j].branch_addr = cpu_to_le32(yp->tx_ring_dma + |
Mariusz Kozlowski | 80950f8 | 2008-03-28 14:41:29 -0700 | [diff] [blame] | 778 | (j+1)*sizeof(struct yellowfin_desc)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 779 | j++; |
| 780 | if (yp->flags & FullTxStatus) { |
| 781 | yp->tx_ring[j].dbdma_cmd = |
| 782 | cpu_to_le32(CMD_TXSTATUS | sizeof(*yp->tx_status)); |
| 783 | yp->tx_ring[j].request_cnt = sizeof(*yp->tx_status); |
| 784 | yp->tx_ring[j].addr = cpu_to_le32(yp->tx_status_dma + |
Mariusz Kozlowski | 80950f8 | 2008-03-28 14:41:29 -0700 | [diff] [blame] | 785 | i*sizeof(struct tx_status_words)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 786 | } else { |
| 787 | /* Symbios chips write only tx_errs word. */ |
| 788 | yp->tx_ring[j].dbdma_cmd = |
| 789 | cpu_to_le32(CMD_TXSTATUS | INTR_ALWAYS | 2); |
| 790 | yp->tx_ring[j].request_cnt = 2; |
| 791 | /* Om pade ummmmm... */ |
| 792 | yp->tx_ring[j].addr = cpu_to_le32(yp->tx_status_dma + |
| 793 | i*sizeof(struct tx_status_words) + |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 794 | &(yp->tx_status[0].tx_errs) - |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 795 | &(yp->tx_status[0])); |
| 796 | } |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 797 | yp->tx_ring[j].branch_addr = cpu_to_le32(yp->tx_ring_dma + |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 798 | ((j+1)%(2*TX_RING_SIZE))*sizeof(struct yellowfin_desc)); |
| 799 | } |
| 800 | /* Wrap ring */ |
| 801 | yp->tx_ring[++j].dbdma_cmd |= cpu_to_le32(BRANCH_ALWAYS | INTR_ALWAYS); |
| 802 | } |
| 803 | #endif |
| 804 | yp->tx_tail_desc = &yp->tx_status[0]; |
| 805 | return; |
| 806 | } |
| 807 | |
| 808 | static int yellowfin_start_xmit(struct sk_buff *skb, struct net_device *dev) |
| 809 | { |
| 810 | struct yellowfin_private *yp = netdev_priv(dev); |
| 811 | unsigned entry; |
| 812 | int len = skb->len; |
| 813 | |
| 814 | netif_stop_queue (dev); |
| 815 | |
| 816 | /* Note: Ordering is important here, set the field with the |
| 817 | "ownership" bit last, and only then increment cur_tx. */ |
| 818 | |
| 819 | /* Calculate the next Tx descriptor entry. */ |
| 820 | entry = yp->cur_tx % TX_RING_SIZE; |
| 821 | |
| 822 | if (gx_fix) { /* Note: only works for paddable protocols e.g. IP. */ |
| 823 | int cacheline_end = ((unsigned long)skb->data + skb->len) % 32; |
| 824 | /* Fix GX chipset errata. */ |
| 825 | if (cacheline_end > 24 || cacheline_end == 0) { |
| 826 | len = skb->len + 32 - cacheline_end + 1; |
Herbert Xu | 5b057c6 | 2006-06-23 02:06:41 -0700 | [diff] [blame] | 827 | if (skb_padto(skb, len)) { |
| 828 | yp->tx_skbuff[entry] = NULL; |
| 829 | netif_wake_queue(dev); |
Patrick McHardy | 6ed1065 | 2009-06-23 06:03:08 +0000 | [diff] [blame] | 830 | return NETDEV_TX_OK; |
Herbert Xu | 5b057c6 | 2006-06-23 02:06:41 -0700 | [diff] [blame] | 831 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 832 | } |
| 833 | } |
| 834 | yp->tx_skbuff[entry] = skb; |
| 835 | |
| 836 | #ifdef NO_TXSTATS |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 837 | yp->tx_ring[entry].addr = cpu_to_le32(pci_map_single(yp->pci_dev, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 838 | skb->data, len, PCI_DMA_TODEVICE)); |
| 839 | yp->tx_ring[entry].result_status = 0; |
| 840 | if (entry >= TX_RING_SIZE-1) { |
| 841 | /* New stop command. */ |
| 842 | yp->tx_ring[0].dbdma_cmd = cpu_to_le32(CMD_STOP); |
| 843 | yp->tx_ring[TX_RING_SIZE-1].dbdma_cmd = |
| 844 | cpu_to_le32(CMD_TX_PKT|BRANCH_ALWAYS | len); |
| 845 | } else { |
| 846 | yp->tx_ring[entry+1].dbdma_cmd = cpu_to_le32(CMD_STOP); |
| 847 | yp->tx_ring[entry].dbdma_cmd = |
| 848 | cpu_to_le32(CMD_TX_PKT | BRANCH_IFTRUE | len); |
| 849 | } |
| 850 | yp->cur_tx++; |
| 851 | #else |
| 852 | yp->tx_ring[entry<<1].request_cnt = len; |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 853 | yp->tx_ring[entry<<1].addr = cpu_to_le32(pci_map_single(yp->pci_dev, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 854 | skb->data, len, PCI_DMA_TODEVICE)); |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 855 | /* The input_last (status-write) command is constant, but we must |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 856 | rewrite the subsequent 'stop' command. */ |
| 857 | |
| 858 | yp->cur_tx++; |
| 859 | { |
| 860 | unsigned next_entry = yp->cur_tx % TX_RING_SIZE; |
| 861 | yp->tx_ring[next_entry<<1].dbdma_cmd = cpu_to_le32(CMD_STOP); |
| 862 | } |
| 863 | /* Final step -- overwrite the old 'stop' command. */ |
| 864 | |
| 865 | yp->tx_ring[entry<<1].dbdma_cmd = |
| 866 | cpu_to_le32( ((entry % 6) == 0 ? CMD_TX_PKT|INTR_ALWAYS|BRANCH_IFTRUE : |
| 867 | CMD_TX_PKT | BRANCH_IFTRUE) | len); |
| 868 | #endif |
| 869 | |
| 870 | /* Non-x86 Todo: explicitly flush cache lines here. */ |
| 871 | |
| 872 | /* Wake the potentially-idle transmit channel. */ |
| 873 | iowrite32(0x10001000, yp->base + TxCtrl); |
| 874 | |
| 875 | if (yp->cur_tx - yp->dirty_tx < TX_QUEUE_SIZE) |
| 876 | netif_start_queue (dev); /* Typical path */ |
| 877 | else |
| 878 | yp->tx_full = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 879 | |
| 880 | if (yellowfin_debug > 4) { |
| 881 | printk(KERN_DEBUG "%s: Yellowfin transmit frame #%d queued in slot %d.\n", |
| 882 | dev->name, yp->cur_tx, entry); |
| 883 | } |
Patrick McHardy | 6ed1065 | 2009-06-23 06:03:08 +0000 | [diff] [blame] | 884 | return NETDEV_TX_OK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 885 | } |
| 886 | |
| 887 | /* The interrupt handler does all of the Rx thread work and cleans up |
| 888 | after the Tx thread. */ |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 889 | static irqreturn_t yellowfin_interrupt(int irq, void *dev_instance) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 890 | { |
| 891 | struct net_device *dev = dev_instance; |
| 892 | struct yellowfin_private *yp; |
| 893 | void __iomem *ioaddr; |
| 894 | int boguscnt = max_interrupt_work; |
| 895 | unsigned int handled = 0; |
| 896 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 897 | yp = netdev_priv(dev); |
| 898 | ioaddr = yp->base; |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 899 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 900 | spin_lock (&yp->lock); |
| 901 | |
| 902 | do { |
| 903 | u16 intr_status = ioread16(ioaddr + IntrClear); |
| 904 | |
| 905 | if (yellowfin_debug > 4) |
| 906 | printk(KERN_DEBUG "%s: Yellowfin interrupt, status %4.4x.\n", |
| 907 | dev->name, intr_status); |
| 908 | |
| 909 | if (intr_status == 0) |
| 910 | break; |
| 911 | handled = 1; |
| 912 | |
| 913 | if (intr_status & (IntrRxDone | IntrEarlyRx)) { |
| 914 | yellowfin_rx(dev); |
| 915 | iowrite32(0x10001000, ioaddr + RxCtrl); /* Wake Rx engine. */ |
| 916 | } |
| 917 | |
| 918 | #ifdef NO_TXSTATS |
| 919 | for (; yp->cur_tx - yp->dirty_tx > 0; yp->dirty_tx++) { |
| 920 | int entry = yp->dirty_tx % TX_RING_SIZE; |
| 921 | struct sk_buff *skb; |
| 922 | |
| 923 | if (yp->tx_ring[entry].result_status == 0) |
| 924 | break; |
| 925 | skb = yp->tx_skbuff[entry]; |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 926 | dev->stats.tx_packets++; |
| 927 | dev->stats.tx_bytes += skb->len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 928 | /* Free the original skb. */ |
Al Viro | e5a3142 | 2007-12-22 17:53:02 +0000 | [diff] [blame] | 929 | pci_unmap_single(yp->pci_dev, le32_to_cpu(yp->tx_ring[entry].addr), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 930 | skb->len, PCI_DMA_TODEVICE); |
| 931 | dev_kfree_skb_irq(skb); |
| 932 | yp->tx_skbuff[entry] = NULL; |
| 933 | } |
| 934 | if (yp->tx_full |
| 935 | && yp->cur_tx - yp->dirty_tx < TX_QUEUE_SIZE - 4) { |
| 936 | /* The ring is no longer full, clear tbusy. */ |
| 937 | yp->tx_full = 0; |
| 938 | netif_wake_queue(dev); |
| 939 | } |
| 940 | #else |
| 941 | if ((intr_status & IntrTxDone) || (yp->tx_tail_desc->tx_errs)) { |
| 942 | unsigned dirty_tx = yp->dirty_tx; |
| 943 | |
| 944 | for (dirty_tx = yp->dirty_tx; yp->cur_tx - dirty_tx > 0; |
| 945 | dirty_tx++) { |
| 946 | /* Todo: optimize this. */ |
| 947 | int entry = dirty_tx % TX_RING_SIZE; |
| 948 | u16 tx_errs = yp->tx_status[entry].tx_errs; |
| 949 | struct sk_buff *skb; |
| 950 | |
| 951 | #ifndef final_version |
| 952 | if (yellowfin_debug > 5) |
| 953 | printk(KERN_DEBUG "%s: Tx queue %d check, Tx status " |
| 954 | "%4.4x %4.4x %4.4x %4.4x.\n", |
| 955 | dev->name, entry, |
| 956 | yp->tx_status[entry].tx_cnt, |
| 957 | yp->tx_status[entry].tx_errs, |
| 958 | yp->tx_status[entry].total_tx_cnt, |
| 959 | yp->tx_status[entry].paused); |
| 960 | #endif |
| 961 | if (tx_errs == 0) |
| 962 | break; /* It still hasn't been Txed */ |
| 963 | skb = yp->tx_skbuff[entry]; |
| 964 | if (tx_errs & 0xF810) { |
| 965 | /* There was an major error, log it. */ |
| 966 | #ifndef final_version |
| 967 | if (yellowfin_debug > 1) |
| 968 | printk(KERN_DEBUG "%s: Transmit error, Tx status %4.4x.\n", |
| 969 | dev->name, tx_errs); |
| 970 | #endif |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 971 | dev->stats.tx_errors++; |
| 972 | if (tx_errs & 0xF800) dev->stats.tx_aborted_errors++; |
| 973 | if (tx_errs & 0x0800) dev->stats.tx_carrier_errors++; |
| 974 | if (tx_errs & 0x2000) dev->stats.tx_window_errors++; |
| 975 | if (tx_errs & 0x8000) dev->stats.tx_fifo_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 976 | } else { |
| 977 | #ifndef final_version |
| 978 | if (yellowfin_debug > 4) |
| 979 | printk(KERN_DEBUG "%s: Normal transmit, Tx status %4.4x.\n", |
| 980 | dev->name, tx_errs); |
| 981 | #endif |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 982 | dev->stats.tx_bytes += skb->len; |
| 983 | dev->stats.collisions += tx_errs & 15; |
| 984 | dev->stats.tx_packets++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 985 | } |
| 986 | /* Free the original skb. */ |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 987 | pci_unmap_single(yp->pci_dev, |
| 988 | yp->tx_ring[entry<<1].addr, skb->len, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 989 | PCI_DMA_TODEVICE); |
| 990 | dev_kfree_skb_irq(skb); |
| 991 | yp->tx_skbuff[entry] = 0; |
| 992 | /* Mark status as empty. */ |
| 993 | yp->tx_status[entry].tx_errs = 0; |
| 994 | } |
| 995 | |
| 996 | #ifndef final_version |
| 997 | if (yp->cur_tx - dirty_tx > TX_RING_SIZE) { |
| 998 | printk(KERN_ERR "%s: Out-of-sync dirty pointer, %d vs. %d, full=%d.\n", |
| 999 | dev->name, dirty_tx, yp->cur_tx, yp->tx_full); |
| 1000 | dirty_tx += TX_RING_SIZE; |
| 1001 | } |
| 1002 | #endif |
| 1003 | |
| 1004 | if (yp->tx_full |
| 1005 | && yp->cur_tx - dirty_tx < TX_QUEUE_SIZE - 2) { |
| 1006 | /* The ring is no longer full, clear tbusy. */ |
| 1007 | yp->tx_full = 0; |
| 1008 | netif_wake_queue(dev); |
| 1009 | } |
| 1010 | |
| 1011 | yp->dirty_tx = dirty_tx; |
| 1012 | yp->tx_tail_desc = &yp->tx_status[dirty_tx % TX_RING_SIZE]; |
| 1013 | } |
| 1014 | #endif |
| 1015 | |
| 1016 | /* Log errors and other uncommon events. */ |
| 1017 | if (intr_status & 0x2ee) /* Abnormal error summary. */ |
| 1018 | yellowfin_error(dev, intr_status); |
| 1019 | |
| 1020 | if (--boguscnt < 0) { |
| 1021 | printk(KERN_WARNING "%s: Too much work at interrupt, " |
| 1022 | "status=0x%4.4x.\n", |
| 1023 | dev->name, intr_status); |
| 1024 | break; |
| 1025 | } |
| 1026 | } while (1); |
| 1027 | |
| 1028 | if (yellowfin_debug > 3) |
| 1029 | printk(KERN_DEBUG "%s: exiting interrupt, status=%#4.4x.\n", |
| 1030 | dev->name, ioread16(ioaddr + IntrStatus)); |
| 1031 | |
| 1032 | spin_unlock (&yp->lock); |
| 1033 | return IRQ_RETVAL(handled); |
| 1034 | } |
| 1035 | |
| 1036 | /* This routine is logically part of the interrupt handler, but separated |
| 1037 | for clarity and better register allocation. */ |
| 1038 | static int yellowfin_rx(struct net_device *dev) |
| 1039 | { |
| 1040 | struct yellowfin_private *yp = netdev_priv(dev); |
| 1041 | int entry = yp->cur_rx % RX_RING_SIZE; |
| 1042 | int boguscnt = yp->dirty_rx + RX_RING_SIZE - yp->cur_rx; |
| 1043 | |
| 1044 | if (yellowfin_debug > 4) { |
| 1045 | printk(KERN_DEBUG " In yellowfin_rx(), entry %d status %8.8x.\n", |
| 1046 | entry, yp->rx_ring[entry].result_status); |
| 1047 | printk(KERN_DEBUG " #%d desc. %8.8x %8.8x %8.8x.\n", |
| 1048 | entry, yp->rx_ring[entry].dbdma_cmd, yp->rx_ring[entry].addr, |
| 1049 | yp->rx_ring[entry].result_status); |
| 1050 | } |
| 1051 | |
| 1052 | /* If EOP is set on the next entry, it's a new packet. Send it up. */ |
| 1053 | while (1) { |
| 1054 | struct yellowfin_desc *desc = &yp->rx_ring[entry]; |
| 1055 | struct sk_buff *rx_skb = yp->rx_skbuff[entry]; |
| 1056 | s16 frame_status; |
| 1057 | u16 desc_status; |
| 1058 | int data_size; |
| 1059 | u8 *buf_addr; |
| 1060 | |
| 1061 | if(!desc->result_status) |
| 1062 | break; |
Al Viro | e5a3142 | 2007-12-22 17:53:02 +0000 | [diff] [blame] | 1063 | pci_dma_sync_single_for_cpu(yp->pci_dev, le32_to_cpu(desc->addr), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1064 | yp->rx_buf_sz, PCI_DMA_FROMDEVICE); |
| 1065 | desc_status = le32_to_cpu(desc->result_status) >> 16; |
David S. Miller | 689be43 | 2005-06-28 15:25:31 -0700 | [diff] [blame] | 1066 | buf_addr = rx_skb->data; |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 1067 | data_size = (le32_to_cpu(desc->dbdma_cmd) - |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1068 | le32_to_cpu(desc->result_status)) & 0xffff; |
Harvey Harrison | 6caf52a4 | 2008-04-29 01:03:36 -0700 | [diff] [blame] | 1069 | frame_status = get_unaligned_le16(&(buf_addr[data_size - 2])); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1070 | if (yellowfin_debug > 4) |
| 1071 | printk(KERN_DEBUG " yellowfin_rx() status was %4.4x.\n", |
| 1072 | frame_status); |
| 1073 | if (--boguscnt < 0) |
| 1074 | break; |
| 1075 | if ( ! (desc_status & RX_EOP)) { |
| 1076 | if (data_size != 0) |
| 1077 | printk(KERN_WARNING "%s: Oversized Ethernet frame spanned multiple buffers," |
| 1078 | " status %4.4x, data_size %d!\n", dev->name, desc_status, data_size); |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 1079 | dev->stats.rx_length_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1080 | } else if ((yp->drv_flags & IsGigabit) && (frame_status & 0x0038)) { |
| 1081 | /* There was a error. */ |
| 1082 | if (yellowfin_debug > 3) |
| 1083 | printk(KERN_DEBUG " yellowfin_rx() Rx error was %4.4x.\n", |
| 1084 | frame_status); |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 1085 | dev->stats.rx_errors++; |
| 1086 | if (frame_status & 0x0060) dev->stats.rx_length_errors++; |
| 1087 | if (frame_status & 0x0008) dev->stats.rx_frame_errors++; |
| 1088 | if (frame_status & 0x0010) dev->stats.rx_crc_errors++; |
| 1089 | if (frame_status < 0) dev->stats.rx_dropped++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1090 | } else if ( !(yp->drv_flags & IsGigabit) && |
| 1091 | ((buf_addr[data_size-1] & 0x85) || buf_addr[data_size-2] & 0xC0)) { |
| 1092 | u8 status1 = buf_addr[data_size-2]; |
| 1093 | u8 status2 = buf_addr[data_size-1]; |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 1094 | dev->stats.rx_errors++; |
| 1095 | if (status1 & 0xC0) dev->stats.rx_length_errors++; |
| 1096 | if (status2 & 0x03) dev->stats.rx_frame_errors++; |
| 1097 | if (status2 & 0x04) dev->stats.rx_crc_errors++; |
| 1098 | if (status2 & 0x80) dev->stats.rx_dropped++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1099 | #ifdef YF_PROTOTYPE /* Support for prototype hardware errata. */ |
| 1100 | } else if ((yp->flags & HasMACAddrBug) && |
| 1101 | memcmp(le32_to_cpu(yp->rx_ring_dma + |
| 1102 | entry*sizeof(struct yellowfin_desc)), |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 1103 | dev->dev_addr, 6) != 0 && |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1104 | memcmp(le32_to_cpu(yp->rx_ring_dma + |
| 1105 | entry*sizeof(struct yellowfin_desc)), |
| 1106 | "\377\377\377\377\377\377", 6) != 0) { |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 1107 | if (bogus_rx++ == 0) |
| 1108 | printk(KERN_WARNING "%s: Bad frame to %pM\n", |
| 1109 | dev->name, buf_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1110 | #endif |
| 1111 | } else { |
| 1112 | struct sk_buff *skb; |
| 1113 | int pkt_len = data_size - |
| 1114 | (yp->chip_id ? 7 : 8 + buf_addr[data_size - 8]); |
| 1115 | /* To verify: Yellowfin Length should omit the CRC! */ |
| 1116 | |
| 1117 | #ifndef final_version |
| 1118 | if (yellowfin_debug > 4) |
| 1119 | printk(KERN_DEBUG " yellowfin_rx() normal Rx pkt length %d" |
| 1120 | " of %d, bogus_cnt %d.\n", |
| 1121 | pkt_len, data_size, boguscnt); |
| 1122 | #endif |
| 1123 | /* Check if the packet is long enough to just pass up the skbuff |
| 1124 | without copying to a properly sized skbuff. */ |
| 1125 | if (pkt_len > rx_copybreak) { |
| 1126 | skb_put(skb = rx_skb, pkt_len); |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 1127 | pci_unmap_single(yp->pci_dev, |
Al Viro | e5a3142 | 2007-12-22 17:53:02 +0000 | [diff] [blame] | 1128 | le32_to_cpu(yp->rx_ring[entry].addr), |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 1129 | yp->rx_buf_sz, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1130 | PCI_DMA_FROMDEVICE); |
| 1131 | yp->rx_skbuff[entry] = NULL; |
| 1132 | } else { |
| 1133 | skb = dev_alloc_skb(pkt_len + 2); |
| 1134 | if (skb == NULL) |
| 1135 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1136 | skb_reserve(skb, 2); /* 16 byte align the IP header */ |
David S. Miller | 8c7b7fa | 2007-07-10 22:08:12 -0700 | [diff] [blame] | 1137 | skb_copy_to_linear_data(skb, rx_skb->data, pkt_len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1138 | skb_put(skb, pkt_len); |
Al Viro | e5a3142 | 2007-12-22 17:53:02 +0000 | [diff] [blame] | 1139 | pci_dma_sync_single_for_device(yp->pci_dev, |
| 1140 | le32_to_cpu(desc->addr), |
| 1141 | yp->rx_buf_sz, |
| 1142 | PCI_DMA_FROMDEVICE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1143 | } |
| 1144 | skb->protocol = eth_type_trans(skb, dev); |
| 1145 | netif_rx(skb); |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 1146 | dev->stats.rx_packets++; |
| 1147 | dev->stats.rx_bytes += pkt_len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1148 | } |
| 1149 | entry = (++yp->cur_rx) % RX_RING_SIZE; |
| 1150 | } |
| 1151 | |
| 1152 | /* Refill the Rx ring buffers. */ |
| 1153 | for (; yp->cur_rx - yp->dirty_rx > 0; yp->dirty_rx++) { |
| 1154 | entry = yp->dirty_rx % RX_RING_SIZE; |
| 1155 | if (yp->rx_skbuff[entry] == NULL) { |
| 1156 | struct sk_buff *skb = dev_alloc_skb(yp->rx_buf_sz); |
| 1157 | if (skb == NULL) |
| 1158 | break; /* Better luck next round. */ |
| 1159 | yp->rx_skbuff[entry] = skb; |
| 1160 | skb->dev = dev; /* Mark as being used by this device. */ |
| 1161 | skb_reserve(skb, 2); /* Align IP on 16 byte boundaries */ |
| 1162 | yp->rx_ring[entry].addr = cpu_to_le32(pci_map_single(yp->pci_dev, |
David S. Miller | 689be43 | 2005-06-28 15:25:31 -0700 | [diff] [blame] | 1163 | skb->data, yp->rx_buf_sz, PCI_DMA_FROMDEVICE)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1164 | } |
| 1165 | yp->rx_ring[entry].dbdma_cmd = cpu_to_le32(CMD_STOP); |
| 1166 | yp->rx_ring[entry].result_status = 0; /* Clear complete bit. */ |
| 1167 | if (entry != 0) |
| 1168 | yp->rx_ring[entry - 1].dbdma_cmd = |
| 1169 | cpu_to_le32(CMD_RX_BUF | INTR_ALWAYS | yp->rx_buf_sz); |
| 1170 | else |
| 1171 | yp->rx_ring[RX_RING_SIZE - 1].dbdma_cmd = |
| 1172 | cpu_to_le32(CMD_RX_BUF | INTR_ALWAYS | BRANCH_ALWAYS |
| 1173 | | yp->rx_buf_sz); |
| 1174 | } |
| 1175 | |
| 1176 | return 0; |
| 1177 | } |
| 1178 | |
| 1179 | static void yellowfin_error(struct net_device *dev, int intr_status) |
| 1180 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1181 | printk(KERN_ERR "%s: Something Wicked happened! %4.4x.\n", |
| 1182 | dev->name, intr_status); |
| 1183 | /* Hmmmmm, it's not clear what to do here. */ |
| 1184 | if (intr_status & (IntrTxPCIErr | IntrTxPCIFault)) |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 1185 | dev->stats.tx_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1186 | if (intr_status & (IntrRxPCIErr | IntrRxPCIFault)) |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 1187 | dev->stats.rx_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1188 | } |
| 1189 | |
| 1190 | static int yellowfin_close(struct net_device *dev) |
| 1191 | { |
| 1192 | struct yellowfin_private *yp = netdev_priv(dev); |
| 1193 | void __iomem *ioaddr = yp->base; |
| 1194 | int i; |
| 1195 | |
| 1196 | netif_stop_queue (dev); |
| 1197 | |
| 1198 | if (yellowfin_debug > 1) { |
| 1199 | printk(KERN_DEBUG "%s: Shutting down ethercard, status was Tx %4.4x " |
| 1200 | "Rx %4.4x Int %2.2x.\n", |
| 1201 | dev->name, ioread16(ioaddr + TxStatus), |
| 1202 | ioread16(ioaddr + RxStatus), |
| 1203 | ioread16(ioaddr + IntrStatus)); |
| 1204 | printk(KERN_DEBUG "%s: Queue pointers were Tx %d / %d, Rx %d / %d.\n", |
| 1205 | dev->name, yp->cur_tx, yp->dirty_tx, yp->cur_rx, yp->dirty_rx); |
| 1206 | } |
| 1207 | |
| 1208 | /* Disable interrupts by clearing the interrupt mask. */ |
| 1209 | iowrite16(0x0000, ioaddr + IntrEnb); |
| 1210 | |
| 1211 | /* Stop the chip's Tx and Rx processes. */ |
| 1212 | iowrite32(0x80000000, ioaddr + RxCtrl); |
| 1213 | iowrite32(0x80000000, ioaddr + TxCtrl); |
| 1214 | |
| 1215 | del_timer(&yp->timer); |
| 1216 | |
| 1217 | #if defined(__i386__) |
| 1218 | if (yellowfin_debug > 2) { |
| 1219 | printk("\n"KERN_DEBUG" Tx ring at %8.8llx:\n", |
| 1220 | (unsigned long long)yp->tx_ring_dma); |
| 1221 | for (i = 0; i < TX_RING_SIZE*2; i++) |
| 1222 | printk(" %c #%d desc. %8.8x %8.8x %8.8x %8.8x.\n", |
| 1223 | ioread32(ioaddr + TxPtr) == (long)&yp->tx_ring[i] ? '>' : ' ', |
| 1224 | i, yp->tx_ring[i].dbdma_cmd, yp->tx_ring[i].addr, |
| 1225 | yp->tx_ring[i].branch_addr, yp->tx_ring[i].result_status); |
| 1226 | printk(KERN_DEBUG " Tx status %p:\n", yp->tx_status); |
| 1227 | for (i = 0; i < TX_RING_SIZE; i++) |
| 1228 | printk(" #%d status %4.4x %4.4x %4.4x %4.4x.\n", |
| 1229 | i, yp->tx_status[i].tx_cnt, yp->tx_status[i].tx_errs, |
| 1230 | yp->tx_status[i].total_tx_cnt, yp->tx_status[i].paused); |
| 1231 | |
| 1232 | printk("\n"KERN_DEBUG " Rx ring %8.8llx:\n", |
| 1233 | (unsigned long long)yp->rx_ring_dma); |
| 1234 | for (i = 0; i < RX_RING_SIZE; i++) { |
| 1235 | printk(KERN_DEBUG " %c #%d desc. %8.8x %8.8x %8.8x\n", |
| 1236 | ioread32(ioaddr + RxPtr) == (long)&yp->rx_ring[i] ? '>' : ' ', |
| 1237 | i, yp->rx_ring[i].dbdma_cmd, yp->rx_ring[i].addr, |
| 1238 | yp->rx_ring[i].result_status); |
| 1239 | if (yellowfin_debug > 6) { |
| 1240 | if (get_unaligned((u8*)yp->rx_ring[i].addr) != 0x69) { |
| 1241 | int j; |
| 1242 | for (j = 0; j < 0x50; j++) |
| 1243 | printk(" %4.4x", |
| 1244 | get_unaligned(((u16*)yp->rx_ring[i].addr) + j)); |
| 1245 | printk("\n"); |
| 1246 | } |
| 1247 | } |
| 1248 | } |
| 1249 | } |
| 1250 | #endif /* __i386__ debugging only */ |
| 1251 | |
| 1252 | free_irq(dev->irq, dev); |
| 1253 | |
| 1254 | /* Free all the skbuffs in the Rx queue. */ |
| 1255 | for (i = 0; i < RX_RING_SIZE; i++) { |
| 1256 | yp->rx_ring[i].dbdma_cmd = cpu_to_le32(CMD_STOP); |
Al Viro | e5a3142 | 2007-12-22 17:53:02 +0000 | [diff] [blame] | 1257 | yp->rx_ring[i].addr = cpu_to_le32(0xBADF00D0); /* An invalid address. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1258 | if (yp->rx_skbuff[i]) { |
| 1259 | dev_kfree_skb(yp->rx_skbuff[i]); |
| 1260 | } |
| 1261 | yp->rx_skbuff[i] = NULL; |
| 1262 | } |
| 1263 | for (i = 0; i < TX_RING_SIZE; i++) { |
| 1264 | if (yp->tx_skbuff[i]) |
| 1265 | dev_kfree_skb(yp->tx_skbuff[i]); |
| 1266 | yp->tx_skbuff[i] = NULL; |
| 1267 | } |
| 1268 | |
| 1269 | #ifdef YF_PROTOTYPE /* Support for prototype hardware errata. */ |
| 1270 | if (yellowfin_debug > 0) { |
| 1271 | printk(KERN_DEBUG "%s: Received %d frames that we should not have.\n", |
| 1272 | dev->name, bogus_rx); |
| 1273 | } |
| 1274 | #endif |
| 1275 | |
| 1276 | return 0; |
| 1277 | } |
| 1278 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1279 | /* Set or clear the multicast filter for this adaptor. */ |
| 1280 | |
| 1281 | static void set_rx_mode(struct net_device *dev) |
| 1282 | { |
| 1283 | struct yellowfin_private *yp = netdev_priv(dev); |
| 1284 | void __iomem *ioaddr = yp->base; |
| 1285 | u16 cfg_value = ioread16(ioaddr + Cnfg); |
| 1286 | |
| 1287 | /* Stop the Rx process to change any value. */ |
| 1288 | iowrite16(cfg_value & ~0x1000, ioaddr + Cnfg); |
| 1289 | if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1290 | iowrite16(0x000F, ioaddr + AddrMode); |
| 1291 | } else if ((dev->mc_count > 64) || (dev->flags & IFF_ALLMULTI)) { |
| 1292 | /* Too many to filter well, or accept all multicasts. */ |
| 1293 | iowrite16(0x000B, ioaddr + AddrMode); |
| 1294 | } else if (dev->mc_count > 0) { /* Must use the multicast hash table. */ |
| 1295 | struct dev_mc_list *mclist; |
| 1296 | u16 hash_table[4]; |
| 1297 | int i; |
| 1298 | memset(hash_table, 0, sizeof(hash_table)); |
| 1299 | for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count; |
| 1300 | i++, mclist = mclist->next) { |
| 1301 | unsigned int bit; |
| 1302 | |
| 1303 | /* Due to a bug in the early chip versions, multiple filter |
| 1304 | slots must be set for each address. */ |
| 1305 | if (yp->drv_flags & HasMulticastBug) { |
| 1306 | bit = (ether_crc_le(3, mclist->dmi_addr) >> 3) & 0x3f; |
| 1307 | hash_table[bit >> 4] |= (1 << bit); |
| 1308 | bit = (ether_crc_le(4, mclist->dmi_addr) >> 3) & 0x3f; |
| 1309 | hash_table[bit >> 4] |= (1 << bit); |
| 1310 | bit = (ether_crc_le(5, mclist->dmi_addr) >> 3) & 0x3f; |
| 1311 | hash_table[bit >> 4] |= (1 << bit); |
| 1312 | } |
| 1313 | bit = (ether_crc_le(6, mclist->dmi_addr) >> 3) & 0x3f; |
| 1314 | hash_table[bit >> 4] |= (1 << bit); |
| 1315 | } |
| 1316 | /* Copy the hash table to the chip. */ |
| 1317 | for (i = 0; i < 4; i++) |
| 1318 | iowrite16(hash_table[i], ioaddr + HashTbl + i*2); |
| 1319 | iowrite16(0x0003, ioaddr + AddrMode); |
| 1320 | } else { /* Normal, unicast/broadcast-only mode. */ |
| 1321 | iowrite16(0x0001, ioaddr + AddrMode); |
| 1322 | } |
| 1323 | /* Restart the Rx process. */ |
| 1324 | iowrite16(cfg_value | 0x1000, ioaddr + Cnfg); |
| 1325 | } |
| 1326 | |
| 1327 | static void yellowfin_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info) |
| 1328 | { |
| 1329 | struct yellowfin_private *np = netdev_priv(dev); |
| 1330 | strcpy(info->driver, DRV_NAME); |
| 1331 | strcpy(info->version, DRV_VERSION); |
| 1332 | strcpy(info->bus_info, pci_name(np->pci_dev)); |
| 1333 | } |
| 1334 | |
Jeff Garzik | 7282d49 | 2006-09-13 14:30:00 -0400 | [diff] [blame] | 1335 | static const struct ethtool_ops ethtool_ops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1336 | .get_drvinfo = yellowfin_get_drvinfo |
| 1337 | }; |
| 1338 | |
| 1339 | static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) |
| 1340 | { |
| 1341 | struct yellowfin_private *np = netdev_priv(dev); |
| 1342 | void __iomem *ioaddr = np->base; |
| 1343 | struct mii_ioctl_data *data = if_mii(rq); |
| 1344 | |
| 1345 | switch(cmd) { |
| 1346 | case SIOCGMIIPHY: /* Get address of MII PHY in use. */ |
| 1347 | data->phy_id = np->phys[0] & 0x1f; |
| 1348 | /* Fall Through */ |
| 1349 | |
| 1350 | case SIOCGMIIREG: /* Read MII PHY register. */ |
| 1351 | data->val_out = mdio_read(ioaddr, data->phy_id & 0x1f, data->reg_num & 0x1f); |
| 1352 | return 0; |
| 1353 | |
| 1354 | case SIOCSMIIREG: /* Write MII PHY register. */ |
| 1355 | if (!capable(CAP_NET_ADMIN)) |
| 1356 | return -EPERM; |
| 1357 | if (data->phy_id == np->phys[0]) { |
| 1358 | u16 value = data->val_in; |
| 1359 | switch (data->reg_num) { |
| 1360 | case 0: |
| 1361 | /* Check for autonegotiation on or reset. */ |
| 1362 | np->medialock = (value & 0x9000) ? 0 : 1; |
| 1363 | if (np->medialock) |
| 1364 | np->full_duplex = (value & 0x0100) ? 1 : 0; |
| 1365 | break; |
| 1366 | case 4: np->advertising = value; break; |
| 1367 | } |
| 1368 | /* Perhaps check_duplex(dev), depending on chip semantics. */ |
| 1369 | } |
| 1370 | mdio_write(ioaddr, data->phy_id & 0x1f, data->reg_num & 0x1f, data->val_in); |
| 1371 | return 0; |
| 1372 | default: |
| 1373 | return -EOPNOTSUPP; |
| 1374 | } |
| 1375 | } |
| 1376 | |
| 1377 | |
| 1378 | static void __devexit yellowfin_remove_one (struct pci_dev *pdev) |
| 1379 | { |
| 1380 | struct net_device *dev = pci_get_drvdata(pdev); |
| 1381 | struct yellowfin_private *np; |
| 1382 | |
Eric Sesterhenn | 5d9428d | 2006-04-02 13:52:48 +0200 | [diff] [blame] | 1383 | BUG_ON(!dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1384 | np = netdev_priv(dev); |
| 1385 | |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 1386 | pci_free_consistent(pdev, STATUS_TOTAL_SIZE, np->tx_status, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1387 | np->tx_status_dma); |
| 1388 | pci_free_consistent(pdev, RX_TOTAL_SIZE, np->rx_ring, np->rx_ring_dma); |
| 1389 | pci_free_consistent(pdev, TX_TOTAL_SIZE, np->tx_ring, np->tx_ring_dma); |
| 1390 | unregister_netdev (dev); |
| 1391 | |
| 1392 | pci_iounmap(pdev, np->base); |
| 1393 | |
| 1394 | pci_release_regions (pdev); |
| 1395 | |
| 1396 | free_netdev (dev); |
| 1397 | pci_set_drvdata(pdev, NULL); |
| 1398 | } |
| 1399 | |
| 1400 | |
| 1401 | static struct pci_driver yellowfin_driver = { |
| 1402 | .name = DRV_NAME, |
| 1403 | .id_table = yellowfin_pci_tbl, |
| 1404 | .probe = yellowfin_init_one, |
| 1405 | .remove = __devexit_p(yellowfin_remove_one), |
| 1406 | }; |
| 1407 | |
| 1408 | |
| 1409 | static int __init yellowfin_init (void) |
| 1410 | { |
| 1411 | /* when a module, this is printed whether or not devices are found in probe */ |
| 1412 | #ifdef MODULE |
| 1413 | printk(version); |
| 1414 | #endif |
Jeff Garzik | 2991762 | 2006-08-19 17:48:59 -0400 | [diff] [blame] | 1415 | return pci_register_driver(&yellowfin_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1416 | } |
| 1417 | |
| 1418 | |
| 1419 | static void __exit yellowfin_cleanup (void) |
| 1420 | { |
| 1421 | pci_unregister_driver (&yellowfin_driver); |
| 1422 | } |
| 1423 | |
| 1424 | |
| 1425 | module_init(yellowfin_init); |
| 1426 | module_exit(yellowfin_cleanup); |