Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* via-rhine.c: A Linux Ethernet device driver for VIA Rhine family chips. */ |
| 2 | /* |
| 3 | Written 1998-2001 by Donald Becker. |
| 4 | |
| 5 | Current Maintainer: Roger Luethi <rl@hellgate.ch> |
| 6 | |
| 7 | This software may be used and distributed according to the terms of |
| 8 | the GNU General Public License (GPL), incorporated herein by reference. |
| 9 | Drivers based on or derived from this code fall under the GPL and must |
| 10 | retain the authorship, copyright and license notice. This file is not |
| 11 | a complete program and may only be used when the entire operating |
| 12 | system is licensed under the GPL. |
| 13 | |
| 14 | This driver is designed for the VIA VT86C100A Rhine-I. |
| 15 | It also works with the Rhine-II (6102) and Rhine-III (6105/6105L/6105LOM |
| 16 | and management NIC 6105M). |
| 17 | |
| 18 | The author may be reached as becker@scyld.com, or C/O |
| 19 | Scyld Computing Corporation |
| 20 | 410 Severn Ave., Suite 210 |
| 21 | Annapolis MD 21403 |
| 22 | |
| 23 | |
| 24 | This driver contains some changes from the original Donald Becker |
| 25 | version. He may or may not be interested in bug reports on this |
| 26 | code. You can find his versions at: |
| 27 | http://www.scyld.com/network/via-rhine.html |
Jeff Garzik | 03a8c66 | 2006-06-27 07:57:22 -0400 | [diff] [blame] | 28 | [link no longer provides useful info -jgarzik] |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 29 | |
| 30 | */ |
| 31 | |
Joe Perches | df4511f | 2011-04-16 14:15:25 +0000 | [diff] [blame] | 32 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| 33 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | #define DRV_NAME "via-rhine" |
Roger Luethi | 38f49e8 | 2010-12-06 00:59:40 +0000 | [diff] [blame] | 35 | #define DRV_VERSION "1.5.0" |
| 36 | #define DRV_RELDATE "2010-10-09" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 37 | |
Rusty Russell | eb93992 | 2011-12-19 14:08:01 +0000 | [diff] [blame] | 38 | #include <linux/types.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 39 | |
| 40 | /* A few user-configurable values. |
| 41 | These may be modified when a driver module is loaded. */ |
| 42 | |
Joe Perches | df4511f | 2011-04-16 14:15:25 +0000 | [diff] [blame] | 43 | #define DEBUG |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | static int debug = 1; /* 1 normal messages, 0 quiet .. 7 verbose. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | |
| 46 | /* Set the copy breakpoint for the copy-only-tiny-frames scheme. |
| 47 | Setting to > 1518 effectively disables this feature. */ |
Joe Perches | 8e95a20 | 2009-12-03 07:58:21 +0000 | [diff] [blame] | 48 | #if defined(__alpha__) || defined(__arm__) || defined(__hppa__) || \ |
| 49 | defined(CONFIG_SPARC) || defined(__ia64__) || \ |
| 50 | defined(__sh__) || defined(__mips__) |
Dustin Marquess | b47157f | 2007-08-10 14:05:15 -0700 | [diff] [blame] | 51 | static int rx_copybreak = 1518; |
| 52 | #else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | static int rx_copybreak; |
Dustin Marquess | b47157f | 2007-08-10 14:05:15 -0700 | [diff] [blame] | 54 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 55 | |
Roger Luethi | b933b4d | 2006-08-14 23:00:21 -0700 | [diff] [blame] | 56 | /* Work-around for broken BIOSes: they are unable to get the chip back out of |
| 57 | power state D3 so PXE booting fails. bootparam(7): via-rhine.avoid_D3=1 */ |
Rusty Russell | eb93992 | 2011-12-19 14:08:01 +0000 | [diff] [blame] | 58 | static bool avoid_D3; |
Roger Luethi | b933b4d | 2006-08-14 23:00:21 -0700 | [diff] [blame] | 59 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 60 | /* |
| 61 | * In case you are looking for 'options[]' or 'full_duplex[]', they |
| 62 | * are gone. Use ethtool(8) instead. |
| 63 | */ |
| 64 | |
| 65 | /* Maximum number of multicast addresses to filter (vs. rx-all-multicast). |
| 66 | The Rhine has a 64 element 8390-like hash table. */ |
| 67 | static const int multicast_filter_limit = 32; |
| 68 | |
| 69 | |
| 70 | /* Operational parameters that are set at compile time. */ |
| 71 | |
| 72 | /* Keep the ring sizes a power of two for compile efficiency. |
| 73 | The compiler will convert <unsigned>'%'<2^N> into a bit mask. |
| 74 | Making the Tx ring too large decreases the effectiveness of channel |
| 75 | bonding and packet priority. |
| 76 | There are no ill effects from too-large receive rings. */ |
| 77 | #define TX_RING_SIZE 16 |
| 78 | #define TX_QUEUE_LEN 10 /* Limit ring entries actually used. */ |
Roger Luethi | 633949a | 2006-08-14 23:00:17 -0700 | [diff] [blame] | 79 | #define RX_RING_SIZE 64 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 80 | |
| 81 | /* Operational parameters that usually are not changed. */ |
| 82 | |
| 83 | /* Time in jiffies before concluding the transmitter is hung. */ |
| 84 | #define TX_TIMEOUT (2*HZ) |
| 85 | |
| 86 | #define PKT_BUF_SZ 1536 /* Size of each temporary Rx buffer.*/ |
| 87 | |
| 88 | #include <linux/module.h> |
| 89 | #include <linux/moduleparam.h> |
| 90 | #include <linux/kernel.h> |
| 91 | #include <linux/string.h> |
| 92 | #include <linux/timer.h> |
| 93 | #include <linux/errno.h> |
| 94 | #include <linux/ioport.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 95 | #include <linux/interrupt.h> |
| 96 | #include <linux/pci.h> |
Domen Puncer | 1e7f0bd | 2005-06-26 18:22:14 -0400 | [diff] [blame] | 97 | #include <linux/dma-mapping.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 98 | #include <linux/netdevice.h> |
| 99 | #include <linux/etherdevice.h> |
| 100 | #include <linux/skbuff.h> |
| 101 | #include <linux/init.h> |
| 102 | #include <linux/delay.h> |
| 103 | #include <linux/mii.h> |
| 104 | #include <linux/ethtool.h> |
| 105 | #include <linux/crc32.h> |
Roger Luethi | 38f49e8 | 2010-12-06 00:59:40 +0000 | [diff] [blame] | 106 | #include <linux/if_vlan.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 107 | #include <linux/bitops.h> |
Jarek Poplawski | c0d7a02 | 2009-12-23 21:54:29 -0800 | [diff] [blame] | 108 | #include <linux/workqueue.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 109 | #include <asm/processor.h> /* Processor type for cache alignment. */ |
| 110 | #include <asm/io.h> |
| 111 | #include <asm/irq.h> |
| 112 | #include <asm/uaccess.h> |
Roger Luethi | e84df48 | 2007-03-06 19:57:37 +0100 | [diff] [blame] | 113 | #include <linux/dmi.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 114 | |
| 115 | /* These identify the driver base version and may not be removed. */ |
Stephen Hemminger | c8de1fc | 2009-02-26 10:19:31 +0000 | [diff] [blame] | 116 | static const char version[] __devinitconst = |
Joe Perches | df4511f | 2011-04-16 14:15:25 +0000 | [diff] [blame] | 117 | "v1.10-LK" DRV_VERSION " " DRV_RELDATE " Written by Donald Becker"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 118 | |
| 119 | /* This driver was written to use PCI memory space. Some early versions |
| 120 | of the Rhine may only work correctly with I/O space accesses. */ |
| 121 | #ifdef CONFIG_VIA_RHINE_MMIO |
| 122 | #define USE_MMIO |
| 123 | #else |
| 124 | #endif |
| 125 | |
| 126 | MODULE_AUTHOR("Donald Becker <becker@scyld.com>"); |
| 127 | MODULE_DESCRIPTION("VIA Rhine PCI Fast Ethernet driver"); |
| 128 | MODULE_LICENSE("GPL"); |
| 129 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 130 | module_param(debug, int, 0); |
| 131 | module_param(rx_copybreak, int, 0); |
Roger Luethi | b933b4d | 2006-08-14 23:00:21 -0700 | [diff] [blame] | 132 | module_param(avoid_D3, bool, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 133 | MODULE_PARM_DESC(debug, "VIA Rhine debug level (0-7)"); |
| 134 | MODULE_PARM_DESC(rx_copybreak, "VIA Rhine copy breakpoint for copy-only-tiny-frames"); |
Roger Luethi | b933b4d | 2006-08-14 23:00:21 -0700 | [diff] [blame] | 135 | MODULE_PARM_DESC(avoid_D3, "Avoid power state D3 (work-around for broken BIOSes)"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 136 | |
Roger Luethi | 38f49e8 | 2010-12-06 00:59:40 +0000 | [diff] [blame] | 137 | #define MCAM_SIZE 32 |
| 138 | #define VCAM_SIZE 32 |
| 139 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 140 | /* |
| 141 | Theory of Operation |
| 142 | |
| 143 | I. Board Compatibility |
| 144 | |
| 145 | This driver is designed for the VIA 86c100A Rhine-II PCI Fast Ethernet |
| 146 | controller. |
| 147 | |
| 148 | II. Board-specific settings |
| 149 | |
| 150 | Boards with this chip are functional only in a bus-master PCI slot. |
| 151 | |
| 152 | Many operational settings are loaded from the EEPROM to the Config word at |
| 153 | offset 0x78. For most of these settings, this driver assumes that they are |
| 154 | correct. |
| 155 | If this driver is compiled to use PCI memory space operations the EEPROM |
| 156 | must be configured to enable memory ops. |
| 157 | |
| 158 | III. Driver operation |
| 159 | |
| 160 | IIIa. Ring buffers |
| 161 | |
| 162 | This driver uses two statically allocated fixed-size descriptor lists |
| 163 | formed into rings by a branch from the final descriptor to the beginning of |
| 164 | the list. The ring sizes are set at compile time by RX/TX_RING_SIZE. |
| 165 | |
| 166 | IIIb/c. Transmit/Receive Structure |
| 167 | |
| 168 | This driver attempts to use a zero-copy receive and transmit scheme. |
| 169 | |
| 170 | Alas, all data buffers are required to start on a 32 bit boundary, so |
| 171 | the driver must often copy transmit packets into bounce buffers. |
| 172 | |
| 173 | The driver allocates full frame size skbuffs for the Rx ring buffers at |
| 174 | open() time and passes the skb->data field to the chip as receive data |
| 175 | buffers. When an incoming frame is less than RX_COPYBREAK bytes long, |
| 176 | a fresh skbuff is allocated and the frame is copied to the new skbuff. |
| 177 | When the incoming frame is larger, the skbuff is passed directly up the |
| 178 | protocol stack. Buffers consumed this way are replaced by newly allocated |
| 179 | skbuffs in the last phase of rhine_rx(). |
| 180 | |
| 181 | The RX_COPYBREAK value is chosen to trade-off the memory wasted by |
| 182 | using a full-sized skbuff for small frames vs. the copying costs of larger |
| 183 | frames. New boards are typically used in generously configured machines |
| 184 | and the underfilled buffers have negligible impact compared to the benefit of |
| 185 | a single allocation size, so the default value of zero results in never |
| 186 | copying packets. When copying is done, the cost is usually mitigated by using |
| 187 | a combined copy/checksum routine. Copying also preloads the cache, which is |
| 188 | most useful with small frames. |
| 189 | |
| 190 | Since the VIA chips are only able to transfer data to buffers on 32 bit |
| 191 | boundaries, the IP header at offset 14 in an ethernet frame isn't |
| 192 | longword aligned for further processing. Copying these unaligned buffers |
| 193 | has the beneficial effect of 16-byte aligning the IP header. |
| 194 | |
| 195 | IIId. Synchronization |
| 196 | |
| 197 | The driver runs as two independent, single-threaded flows of control. One |
| 198 | is the send-packet routine, which enforces single-threaded use by the |
Wang Chen | b74ca3a | 2008-12-08 01:14:16 -0800 | [diff] [blame] | 199 | netdev_priv(dev)->lock spinlock. The other thread is the interrupt handler, |
| 200 | which is single threaded by the hardware and interrupt handling software. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 201 | |
| 202 | The send packet thread has partial control over the Tx ring. It locks the |
Wang Chen | b74ca3a | 2008-12-08 01:14:16 -0800 | [diff] [blame] | 203 | netdev_priv(dev)->lock whenever it's queuing a Tx packet. If the next slot in |
| 204 | the ring is not available it stops the transmit queue by |
| 205 | calling netif_stop_queue. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 206 | |
| 207 | The interrupt handler has exclusive control over the Rx ring and records stats |
| 208 | from the Tx ring. After reaping the stats, it marks the Tx queue entry as |
| 209 | empty by incrementing the dirty_tx mark. If at least half of the entries in |
| 210 | the Rx ring are available the transmit queue is woken up if it was stopped. |
| 211 | |
| 212 | IV. Notes |
| 213 | |
| 214 | IVb. References |
| 215 | |
| 216 | Preliminary VT86C100A manual from http://www.via.com.tw/ |
| 217 | http://www.scyld.com/expert/100mbps.html |
| 218 | http://www.scyld.com/expert/NWay.html |
| 219 | ftp://ftp.via.com.tw/public/lan/Products/NIC/VT86C100A/Datasheet/VT86C100A03.pdf |
| 220 | ftp://ftp.via.com.tw/public/lan/Products/NIC/VT6102/Datasheet/VT6102_021.PDF |
| 221 | |
| 222 | |
| 223 | IVc. Errata |
| 224 | |
| 225 | The VT86C100A manual is not reliable information. |
| 226 | The 3043 chip does not handle unaligned transmit or receive buffers, resulting |
| 227 | in significant performance degradation for bounce buffer copies on transmit |
| 228 | and unaligned IP headers on receive. |
| 229 | The chip does not pad to minimum transmit length. |
| 230 | |
| 231 | */ |
| 232 | |
| 233 | |
| 234 | /* This table drives the PCI probe routines. It's mostly boilerplate in all |
| 235 | of the drivers, and will likely be provided by some future kernel. |
| 236 | Note the matching code -- the first table entry matchs all 56** cards but |
| 237 | second only the 1234 card. |
| 238 | */ |
| 239 | |
| 240 | enum rhine_revs { |
| 241 | VT86C100A = 0x00, |
| 242 | VTunknown0 = 0x20, |
| 243 | VT6102 = 0x40, |
| 244 | VT8231 = 0x50, /* Integrated MAC */ |
| 245 | VT8233 = 0x60, /* Integrated MAC */ |
| 246 | VT8235 = 0x74, /* Integrated MAC */ |
| 247 | VT8237 = 0x78, /* Integrated MAC */ |
| 248 | VTunknown1 = 0x7C, |
| 249 | VT6105 = 0x80, |
| 250 | VT6105_B0 = 0x83, |
| 251 | VT6105L = 0x8A, |
| 252 | VT6107 = 0x8C, |
| 253 | VTunknown2 = 0x8E, |
| 254 | VT6105M = 0x90, /* Management adapter */ |
| 255 | }; |
| 256 | |
| 257 | enum rhine_quirks { |
| 258 | rqWOL = 0x0001, /* Wake-On-LAN support */ |
| 259 | rqForceReset = 0x0002, |
| 260 | rq6patterns = 0x0040, /* 6 instead of 4 patterns for WOL */ |
| 261 | rqStatusWBRace = 0x0080, /* Tx Status Writeback Error possible */ |
| 262 | rqRhineI = 0x0100, /* See comment below */ |
| 263 | }; |
| 264 | /* |
| 265 | * rqRhineI: VT86C100A (aka Rhine-I) uses different bits to enable |
| 266 | * MMIO as well as for the collision counter and the Tx FIFO underflow |
| 267 | * indicator. In addition, Tx and Rx buffers need to 4 byte aligned. |
| 268 | */ |
| 269 | |
| 270 | /* Beware of PCI posted writes */ |
| 271 | #define IOSYNC do { ioread8(ioaddr + StationAddr); } while (0) |
| 272 | |
Alexey Dobriyan | a3aa188 | 2010-01-07 11:58:11 +0000 | [diff] [blame] | 273 | static DEFINE_PCI_DEVICE_TABLE(rhine_pci_tbl) = { |
Jeff Garzik | 46009c8 | 2006-06-27 09:12:38 -0400 | [diff] [blame] | 274 | { 0x1106, 0x3043, PCI_ANY_ID, PCI_ANY_ID, }, /* VT86C100A */ |
| 275 | { 0x1106, 0x3065, PCI_ANY_ID, PCI_ANY_ID, }, /* VT6102 */ |
| 276 | { 0x1106, 0x3106, PCI_ANY_ID, PCI_ANY_ID, }, /* 6105{,L,LOM} */ |
| 277 | { 0x1106, 0x3053, PCI_ANY_ID, PCI_ANY_ID, }, /* VT6105M */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 278 | { } /* terminate list */ |
| 279 | }; |
| 280 | MODULE_DEVICE_TABLE(pci, rhine_pci_tbl); |
| 281 | |
| 282 | |
| 283 | /* Offsets to the device registers. */ |
| 284 | enum register_offsets { |
| 285 | StationAddr=0x00, RxConfig=0x06, TxConfig=0x07, ChipCmd=0x08, |
Roger Luethi | 38f49e8 | 2010-12-06 00:59:40 +0000 | [diff] [blame] | 286 | ChipCmd1=0x09, TQWake=0x0A, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 287 | IntrStatus=0x0C, IntrEnable=0x0E, |
| 288 | MulticastFilter0=0x10, MulticastFilter1=0x14, |
| 289 | RxRingPtr=0x18, TxRingPtr=0x1C, GFIFOTest=0x54, |
Roger Luethi | 38f49e8 | 2010-12-06 00:59:40 +0000 | [diff] [blame] | 290 | MIIPhyAddr=0x6C, MIIStatus=0x6D, PCIBusConfig=0x6E, PCIBusConfig1=0x6F, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 291 | MIICmd=0x70, MIIRegAddr=0x71, MIIData=0x72, MACRegEEcsr=0x74, |
| 292 | ConfigA=0x78, ConfigB=0x79, ConfigC=0x7A, ConfigD=0x7B, |
| 293 | RxMissed=0x7C, RxCRCErrs=0x7E, MiscCmd=0x81, |
| 294 | StickyHW=0x83, IntrStatus2=0x84, |
Roger Luethi | 38f49e8 | 2010-12-06 00:59:40 +0000 | [diff] [blame] | 295 | CamMask=0x88, CamCon=0x92, CamAddr=0x93, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 296 | WOLcrSet=0xA0, PwcfgSet=0xA1, WOLcgSet=0xA3, WOLcrClr=0xA4, |
| 297 | WOLcrClr1=0xA6, WOLcgClr=0xA7, |
| 298 | PwrcsrSet=0xA8, PwrcsrSet1=0xA9, PwrcsrClr=0xAC, PwrcsrClr1=0xAD, |
| 299 | }; |
| 300 | |
| 301 | /* Bits in ConfigD */ |
| 302 | enum backoff_bits { |
| 303 | BackOptional=0x01, BackModify=0x02, |
| 304 | BackCaptureEffect=0x04, BackRandom=0x08 |
| 305 | }; |
| 306 | |
Roger Luethi | 38f49e8 | 2010-12-06 00:59:40 +0000 | [diff] [blame] | 307 | /* Bits in the TxConfig (TCR) register */ |
| 308 | enum tcr_bits { |
| 309 | TCR_PQEN=0x01, |
| 310 | TCR_LB0=0x02, /* loopback[0] */ |
| 311 | TCR_LB1=0x04, /* loopback[1] */ |
| 312 | TCR_OFSET=0x08, |
| 313 | TCR_RTGOPT=0x10, |
| 314 | TCR_RTFT0=0x20, |
| 315 | TCR_RTFT1=0x40, |
| 316 | TCR_RTSF=0x80, |
| 317 | }; |
| 318 | |
| 319 | /* Bits in the CamCon (CAMC) register */ |
| 320 | enum camcon_bits { |
| 321 | CAMC_CAMEN=0x01, |
| 322 | CAMC_VCAMSL=0x02, |
| 323 | CAMC_CAMWR=0x04, |
| 324 | CAMC_CAMRD=0x08, |
| 325 | }; |
| 326 | |
| 327 | /* Bits in the PCIBusConfig1 (BCR1) register */ |
| 328 | enum bcr1_bits { |
| 329 | BCR1_POT0=0x01, |
| 330 | BCR1_POT1=0x02, |
| 331 | BCR1_POT2=0x04, |
| 332 | BCR1_CTFT0=0x08, |
| 333 | BCR1_CTFT1=0x10, |
| 334 | BCR1_CTSF=0x20, |
| 335 | BCR1_TXQNOBK=0x40, /* for VT6105 */ |
| 336 | BCR1_VIDFR=0x80, /* for VT6105 */ |
| 337 | BCR1_MED0=0x40, /* for VT6102 */ |
| 338 | BCR1_MED1=0x80, /* for VT6102 */ |
| 339 | }; |
| 340 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 341 | #ifdef USE_MMIO |
| 342 | /* Registers we check that mmio and reg are the same. */ |
| 343 | static const int mmio_verify_registers[] = { |
| 344 | RxConfig, TxConfig, IntrEnable, ConfigA, ConfigB, ConfigC, ConfigD, |
| 345 | 0 |
| 346 | }; |
| 347 | #endif |
| 348 | |
| 349 | /* Bits in the interrupt status/mask registers. */ |
| 350 | enum intr_status_bits { |
Francois Romieu | 7ab87ff | 2012-01-06 21:42:26 +0100 | [diff] [blame^] | 351 | IntrRxDone = 0x0001, |
| 352 | IntrTxDone = 0x0002, |
| 353 | IntrRxErr = 0x0004, |
| 354 | IntrTxError = 0x0008, |
| 355 | IntrRxEmpty = 0x0020, |
| 356 | IntrPCIErr = 0x0040, |
| 357 | IntrStatsMax = 0x0080, |
| 358 | IntrRxEarly = 0x0100, |
| 359 | IntrTxUnderrun = 0x0210, |
| 360 | IntrRxOverflow = 0x0400, |
| 361 | IntrRxDropped = 0x0800, |
| 362 | IntrRxNoBuf = 0x1000, |
| 363 | IntrTxAborted = 0x2000, |
| 364 | IntrLinkChange = 0x4000, |
| 365 | IntrRxWakeUp = 0x8000, |
| 366 | IntrTxDescRace = 0x080000, /* mapped from IntrStatus2 */ |
| 367 | IntrNormalSummary = IntrRxDone | IntrTxDone, |
| 368 | IntrTxErrSummary = IntrTxDescRace | IntrTxAborted | IntrTxError | |
| 369 | IntrTxUnderrun, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 370 | }; |
| 371 | |
| 372 | /* Bits in WOLcrSet/WOLcrClr and PwrcsrSet/PwrcsrClr */ |
| 373 | enum wol_bits { |
| 374 | WOLucast = 0x10, |
| 375 | WOLmagic = 0x20, |
| 376 | WOLbmcast = 0x30, |
| 377 | WOLlnkon = 0x40, |
| 378 | WOLlnkoff = 0x80, |
| 379 | }; |
| 380 | |
| 381 | /* The Rx and Tx buffer descriptors. */ |
| 382 | struct rx_desc { |
Al Viro | 53c03f5 | 2007-08-23 02:33:30 -0400 | [diff] [blame] | 383 | __le32 rx_status; |
| 384 | __le32 desc_length; /* Chain flag, Buffer/frame length */ |
| 385 | __le32 addr; |
| 386 | __le32 next_desc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 387 | }; |
| 388 | struct tx_desc { |
Al Viro | 53c03f5 | 2007-08-23 02:33:30 -0400 | [diff] [blame] | 389 | __le32 tx_status; |
| 390 | __le32 desc_length; /* Chain flag, Tx Config, Frame length */ |
| 391 | __le32 addr; |
| 392 | __le32 next_desc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 393 | }; |
| 394 | |
| 395 | /* Initial value for tx_desc.desc_length, Buffer size goes to bits 0-10 */ |
| 396 | #define TXDESC 0x00e08000 |
| 397 | |
| 398 | enum rx_status_bits { |
| 399 | RxOK=0x8000, RxWholePkt=0x0300, RxErr=0x008F |
| 400 | }; |
| 401 | |
| 402 | /* Bits in *_desc.*_status */ |
| 403 | enum desc_status_bits { |
| 404 | DescOwn=0x80000000 |
| 405 | }; |
| 406 | |
Roger Luethi | 38f49e8 | 2010-12-06 00:59:40 +0000 | [diff] [blame] | 407 | /* Bits in *_desc.*_length */ |
| 408 | enum desc_length_bits { |
| 409 | DescTag=0x00010000 |
| 410 | }; |
| 411 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 412 | /* Bits in ChipCmd. */ |
| 413 | enum chip_cmd_bits { |
| 414 | CmdInit=0x01, CmdStart=0x02, CmdStop=0x04, CmdRxOn=0x08, |
| 415 | CmdTxOn=0x10, Cmd1TxDemand=0x20, CmdRxDemand=0x40, |
| 416 | Cmd1EarlyRx=0x01, Cmd1EarlyTx=0x02, Cmd1FDuplex=0x04, |
| 417 | Cmd1NoTxPoll=0x08, Cmd1Reset=0x80, |
| 418 | }; |
| 419 | |
| 420 | struct rhine_private { |
Roger Luethi | 38f49e8 | 2010-12-06 00:59:40 +0000 | [diff] [blame] | 421 | /* Bit mask for configured VLAN ids */ |
| 422 | unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)]; |
| 423 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 424 | /* Descriptor rings */ |
| 425 | struct rx_desc *rx_ring; |
| 426 | struct tx_desc *tx_ring; |
| 427 | dma_addr_t rx_ring_dma; |
| 428 | dma_addr_t tx_ring_dma; |
| 429 | |
| 430 | /* The addresses of receive-in-place skbuffs. */ |
| 431 | struct sk_buff *rx_skbuff[RX_RING_SIZE]; |
| 432 | dma_addr_t rx_skbuff_dma[RX_RING_SIZE]; |
| 433 | |
| 434 | /* The saved address of a sent-in-place packet/buffer, for later free(). */ |
| 435 | struct sk_buff *tx_skbuff[TX_RING_SIZE]; |
| 436 | dma_addr_t tx_skbuff_dma[TX_RING_SIZE]; |
| 437 | |
Roger Luethi | 4be5de2 | 2006-04-04 20:49:16 +0200 | [diff] [blame] | 438 | /* Tx bounce buffers (Rhine-I only) */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 439 | unsigned char *tx_buf[TX_RING_SIZE]; |
| 440 | unsigned char *tx_bufs; |
| 441 | dma_addr_t tx_bufs_dma; |
| 442 | |
| 443 | struct pci_dev *pdev; |
| 444 | long pioaddr; |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 445 | struct net_device *dev; |
| 446 | struct napi_struct napi; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 447 | spinlock_t lock; |
Francois Romieu | 7ab87ff | 2012-01-06 21:42:26 +0100 | [diff] [blame^] | 448 | struct mutex task_lock; |
| 449 | bool task_enable; |
| 450 | struct work_struct slow_event_task; |
Jarek Poplawski | c0d7a02 | 2009-12-23 21:54:29 -0800 | [diff] [blame] | 451 | struct work_struct reset_task; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 452 | |
| 453 | /* Frequently used values: keep some adjacent for cache effect. */ |
| 454 | u32 quirks; |
| 455 | struct rx_desc *rx_head_desc; |
| 456 | unsigned int cur_rx, dirty_rx; /* Producer/consumer ring indices */ |
| 457 | unsigned int cur_tx, dirty_tx; |
| 458 | unsigned int rx_buf_sz; /* Based on MTU+slack. */ |
| 459 | u8 wolopts; |
| 460 | |
| 461 | u8 tx_thresh, rx_thresh; |
| 462 | |
| 463 | struct mii_if_info mii_if; |
| 464 | void __iomem *base; |
| 465 | }; |
| 466 | |
Roger Luethi | 38f49e8 | 2010-12-06 00:59:40 +0000 | [diff] [blame] | 467 | #define BYTE_REG_BITS_ON(x, p) do { iowrite8((ioread8((p))|(x)), (p)); } while (0) |
| 468 | #define WORD_REG_BITS_ON(x, p) do { iowrite16((ioread16((p))|(x)), (p)); } while (0) |
| 469 | #define DWORD_REG_BITS_ON(x, p) do { iowrite32((ioread32((p))|(x)), (p)); } while (0) |
| 470 | |
| 471 | #define BYTE_REG_BITS_IS_ON(x, p) (ioread8((p)) & (x)) |
| 472 | #define WORD_REG_BITS_IS_ON(x, p) (ioread16((p)) & (x)) |
| 473 | #define DWORD_REG_BITS_IS_ON(x, p) (ioread32((p)) & (x)) |
| 474 | |
| 475 | #define BYTE_REG_BITS_OFF(x, p) do { iowrite8(ioread8((p)) & (~(x)), (p)); } while (0) |
| 476 | #define WORD_REG_BITS_OFF(x, p) do { iowrite16(ioread16((p)) & (~(x)), (p)); } while (0) |
| 477 | #define DWORD_REG_BITS_OFF(x, p) do { iowrite32(ioread32((p)) & (~(x)), (p)); } while (0) |
| 478 | |
| 479 | #define BYTE_REG_BITS_SET(x, m, p) do { iowrite8((ioread8((p)) & (~(m)))|(x), (p)); } while (0) |
| 480 | #define WORD_REG_BITS_SET(x, m, p) do { iowrite16((ioread16((p)) & (~(m)))|(x), (p)); } while (0) |
| 481 | #define DWORD_REG_BITS_SET(x, m, p) do { iowrite32((ioread32((p)) & (~(m)))|(x), (p)); } while (0) |
| 482 | |
| 483 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 484 | static int mdio_read(struct net_device *dev, int phy_id, int location); |
| 485 | static void mdio_write(struct net_device *dev, int phy_id, int location, int value); |
| 486 | static int rhine_open(struct net_device *dev); |
Jarek Poplawski | c0d7a02 | 2009-12-23 21:54:29 -0800 | [diff] [blame] | 487 | static void rhine_reset_task(struct work_struct *work); |
Francois Romieu | 7ab87ff | 2012-01-06 21:42:26 +0100 | [diff] [blame^] | 488 | static void rhine_slow_event_task(struct work_struct *work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 489 | static void rhine_tx_timeout(struct net_device *dev); |
Stephen Hemminger | 61357325 | 2009-08-31 19:50:58 +0000 | [diff] [blame] | 490 | static netdev_tx_t rhine_start_tx(struct sk_buff *skb, |
| 491 | struct net_device *dev); |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 492 | static irqreturn_t rhine_interrupt(int irq, void *dev_instance); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 493 | static void rhine_tx(struct net_device *dev); |
Roger Luethi | 633949a | 2006-08-14 23:00:17 -0700 | [diff] [blame] | 494 | static int rhine_rx(struct net_device *dev, int limit); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 495 | static void rhine_set_rx_mode(struct net_device *dev); |
| 496 | static struct net_device_stats *rhine_get_stats(struct net_device *dev); |
| 497 | static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); |
Jeff Garzik | 7282d49 | 2006-09-13 14:30:00 -0400 | [diff] [blame] | 498 | static const struct ethtool_ops netdev_ethtool_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 499 | static int rhine_close(struct net_device *dev); |
Jiri Pirko | 8e58613 | 2011-12-08 19:52:37 -0500 | [diff] [blame] | 500 | static int rhine_vlan_rx_add_vid(struct net_device *dev, unsigned short vid); |
| 501 | static int rhine_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid); |
Francois Romieu | 7ab87ff | 2012-01-06 21:42:26 +0100 | [diff] [blame^] | 502 | static void rhine_restart_tx(struct net_device *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 503 | |
Joe Perches | df4511f | 2011-04-16 14:15:25 +0000 | [diff] [blame] | 504 | #define RHINE_WAIT_FOR(condition) \ |
| 505 | do { \ |
| 506 | int i = 1024; \ |
| 507 | while (!(condition) && --i) \ |
| 508 | ; \ |
| 509 | if (debug > 1 && i < 512) \ |
| 510 | pr_info("%4d cycles used @ %s:%d\n", \ |
| 511 | 1024 - i, __func__, __LINE__); \ |
| 512 | } while (0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 513 | |
Francois Romieu | a20a28b | 2011-12-30 14:53:58 +0100 | [diff] [blame] | 514 | static u32 rhine_get_events(struct rhine_private *rp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 515 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 516 | void __iomem *ioaddr = rp->base; |
| 517 | u32 intr_status; |
| 518 | |
| 519 | intr_status = ioread16(ioaddr + IntrStatus); |
| 520 | /* On Rhine-II, Bit 3 indicates Tx descriptor write-back race. */ |
| 521 | if (rp->quirks & rqStatusWBRace) |
| 522 | intr_status |= ioread8(ioaddr + IntrStatus2) << 16; |
| 523 | return intr_status; |
| 524 | } |
| 525 | |
Francois Romieu | a20a28b | 2011-12-30 14:53:58 +0100 | [diff] [blame] | 526 | static void rhine_ack_events(struct rhine_private *rp, u32 mask) |
| 527 | { |
| 528 | void __iomem *ioaddr = rp->base; |
| 529 | |
| 530 | if (rp->quirks & rqStatusWBRace) |
| 531 | iowrite8(mask >> 16, ioaddr + IntrStatus2); |
| 532 | iowrite16(mask, ioaddr + IntrStatus); |
Francois Romieu | 7ab87ff | 2012-01-06 21:42:26 +0100 | [diff] [blame^] | 533 | mmiowb(); |
Francois Romieu | a20a28b | 2011-12-30 14:53:58 +0100 | [diff] [blame] | 534 | } |
| 535 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 536 | /* |
| 537 | * Get power related registers into sane state. |
| 538 | * Notify user about past WOL event. |
| 539 | */ |
| 540 | static void rhine_power_init(struct net_device *dev) |
| 541 | { |
| 542 | struct rhine_private *rp = netdev_priv(dev); |
| 543 | void __iomem *ioaddr = rp->base; |
| 544 | u16 wolstat; |
| 545 | |
| 546 | if (rp->quirks & rqWOL) { |
| 547 | /* Make sure chip is in power state D0 */ |
| 548 | iowrite8(ioread8(ioaddr + StickyHW) & 0xFC, ioaddr + StickyHW); |
| 549 | |
| 550 | /* Disable "force PME-enable" */ |
| 551 | iowrite8(0x80, ioaddr + WOLcgClr); |
| 552 | |
| 553 | /* Clear power-event config bits (WOL) */ |
| 554 | iowrite8(0xFF, ioaddr + WOLcrClr); |
| 555 | /* More recent cards can manage two additional patterns */ |
| 556 | if (rp->quirks & rq6patterns) |
| 557 | iowrite8(0x03, ioaddr + WOLcrClr1); |
| 558 | |
| 559 | /* Save power-event status bits */ |
| 560 | wolstat = ioread8(ioaddr + PwrcsrSet); |
| 561 | if (rp->quirks & rq6patterns) |
| 562 | wolstat |= (ioread8(ioaddr + PwrcsrSet1) & 0x03) << 8; |
| 563 | |
| 564 | /* Clear power-event status bits */ |
| 565 | iowrite8(0xFF, ioaddr + PwrcsrClr); |
| 566 | if (rp->quirks & rq6patterns) |
| 567 | iowrite8(0x03, ioaddr + PwrcsrClr1); |
| 568 | |
| 569 | if (wolstat) { |
| 570 | char *reason; |
| 571 | switch (wolstat) { |
| 572 | case WOLmagic: |
| 573 | reason = "Magic packet"; |
| 574 | break; |
| 575 | case WOLlnkon: |
| 576 | reason = "Link went up"; |
| 577 | break; |
| 578 | case WOLlnkoff: |
| 579 | reason = "Link went down"; |
| 580 | break; |
| 581 | case WOLucast: |
| 582 | reason = "Unicast packet"; |
| 583 | break; |
| 584 | case WOLbmcast: |
| 585 | reason = "Multicast/broadcast packet"; |
| 586 | break; |
| 587 | default: |
| 588 | reason = "Unknown"; |
| 589 | } |
Joe Perches | df4511f | 2011-04-16 14:15:25 +0000 | [diff] [blame] | 590 | netdev_info(dev, "Woke system up. Reason: %s\n", |
| 591 | reason); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 592 | } |
| 593 | } |
| 594 | } |
| 595 | |
| 596 | static void rhine_chip_reset(struct net_device *dev) |
| 597 | { |
| 598 | struct rhine_private *rp = netdev_priv(dev); |
| 599 | void __iomem *ioaddr = rp->base; |
| 600 | |
| 601 | iowrite8(Cmd1Reset, ioaddr + ChipCmd1); |
| 602 | IOSYNC; |
| 603 | |
| 604 | if (ioread8(ioaddr + ChipCmd1) & Cmd1Reset) { |
Joe Perches | df4511f | 2011-04-16 14:15:25 +0000 | [diff] [blame] | 605 | netdev_info(dev, "Reset not complete yet. Trying harder.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 606 | |
| 607 | /* Force reset */ |
| 608 | if (rp->quirks & rqForceReset) |
| 609 | iowrite8(0x40, ioaddr + MiscCmd); |
| 610 | |
| 611 | /* Reset can take somewhat longer (rare) */ |
| 612 | RHINE_WAIT_FOR(!(ioread8(ioaddr + ChipCmd1) & Cmd1Reset)); |
| 613 | } |
| 614 | |
| 615 | if (debug > 1) |
Joe Perches | df4511f | 2011-04-16 14:15:25 +0000 | [diff] [blame] | 616 | netdev_info(dev, "Reset %s\n", |
| 617 | (ioread8(ioaddr + ChipCmd1) & Cmd1Reset) ? |
| 618 | "failed" : "succeeded"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 619 | } |
| 620 | |
| 621 | #ifdef USE_MMIO |
| 622 | static void enable_mmio(long pioaddr, u32 quirks) |
| 623 | { |
| 624 | int n; |
| 625 | if (quirks & rqRhineI) { |
| 626 | /* More recent docs say that this bit is reserved ... */ |
| 627 | n = inb(pioaddr + ConfigA) | 0x20; |
| 628 | outb(n, pioaddr + ConfigA); |
| 629 | } else { |
| 630 | n = inb(pioaddr + ConfigD) | 0x80; |
| 631 | outb(n, pioaddr + ConfigD); |
| 632 | } |
| 633 | } |
| 634 | #endif |
| 635 | |
| 636 | /* |
| 637 | * Loads bytes 0x00-0x05, 0x6E-0x6F, 0x78-0x7B from EEPROM |
| 638 | * (plus 0x6C for Rhine-I/II) |
| 639 | */ |
| 640 | static void __devinit rhine_reload_eeprom(long pioaddr, struct net_device *dev) |
| 641 | { |
| 642 | struct rhine_private *rp = netdev_priv(dev); |
| 643 | void __iomem *ioaddr = rp->base; |
| 644 | |
| 645 | outb(0x20, pioaddr + MACRegEEcsr); |
| 646 | RHINE_WAIT_FOR(!(inb(pioaddr + MACRegEEcsr) & 0x20)); |
| 647 | |
| 648 | #ifdef USE_MMIO |
| 649 | /* |
| 650 | * Reloading from EEPROM overwrites ConfigA-D, so we must re-enable |
| 651 | * MMIO. If reloading EEPROM was done first this could be avoided, but |
| 652 | * it is not known if that still works with the "win98-reboot" problem. |
| 653 | */ |
| 654 | enable_mmio(pioaddr, rp->quirks); |
| 655 | #endif |
| 656 | |
| 657 | /* Turn off EEPROM-controlled wake-up (magic packet) */ |
| 658 | if (rp->quirks & rqWOL) |
| 659 | iowrite8(ioread8(ioaddr + ConfigA) & 0xFC, ioaddr + ConfigA); |
| 660 | |
| 661 | } |
| 662 | |
| 663 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 664 | static void rhine_poll(struct net_device *dev) |
| 665 | { |
| 666 | disable_irq(dev->irq); |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 667 | rhine_interrupt(dev->irq, (void *)dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 668 | enable_irq(dev->irq); |
| 669 | } |
| 670 | #endif |
| 671 | |
Francois Romieu | 269f311 | 2011-12-30 14:43:54 +0100 | [diff] [blame] | 672 | static void rhine_kick_tx_threshold(struct rhine_private *rp) |
| 673 | { |
| 674 | if (rp->tx_thresh < 0xe0) { |
| 675 | void __iomem *ioaddr = rp->base; |
| 676 | |
| 677 | rp->tx_thresh += 0x20; |
| 678 | BYTE_REG_BITS_SET(rp->tx_thresh, 0x80, ioaddr + TxConfig); |
| 679 | } |
| 680 | } |
| 681 | |
Francois Romieu | 7ab87ff | 2012-01-06 21:42:26 +0100 | [diff] [blame^] | 682 | static void rhine_tx_err(struct rhine_private *rp, u32 status) |
| 683 | { |
| 684 | struct net_device *dev = rp->dev; |
| 685 | |
| 686 | if (status & IntrTxAborted) { |
| 687 | if (debug > 1) |
| 688 | netdev_info(dev, "Abort %08x, frame dropped\n", status); |
| 689 | } |
| 690 | |
| 691 | if (status & IntrTxUnderrun) { |
| 692 | rhine_kick_tx_threshold(rp); |
| 693 | if (debug > 1) |
| 694 | netdev_info(dev, "Transmitter underrun, Tx threshold now %02x\n", |
| 695 | rp->tx_thresh); |
| 696 | } |
| 697 | |
| 698 | if (status & IntrTxDescRace) { |
| 699 | if (debug > 2) |
| 700 | netdev_info(dev, "Tx descriptor write-back race\n"); |
| 701 | } |
| 702 | |
| 703 | if ((status & IntrTxError) && |
| 704 | (status & (IntrTxAborted | IntrTxUnderrun | IntrTxDescRace)) == 0) { |
| 705 | rhine_kick_tx_threshold(rp); |
| 706 | if (debug > 1) |
| 707 | netdev_info(dev, "Unspecified error. Tx threshold now %02x\n", |
| 708 | rp->tx_thresh); |
| 709 | } |
| 710 | |
| 711 | rhine_restart_tx(dev); |
| 712 | } |
| 713 | |
| 714 | static void rhine_update_rx_crc_and_missed_errord(struct rhine_private *rp) |
| 715 | { |
| 716 | void __iomem *ioaddr = rp->base; |
| 717 | struct net_device_stats *stats = &rp->dev->stats; |
| 718 | |
| 719 | stats->rx_crc_errors += ioread16(ioaddr + RxCRCErrs); |
| 720 | stats->rx_missed_errors += ioread16(ioaddr + RxMissed); |
| 721 | |
| 722 | /* |
| 723 | * Clears the "tally counters" for CRC errors and missed frames(?). |
| 724 | * It has been reported that some chips need a write of 0 to clear |
| 725 | * these, for others the counters are set to 1 when written to and |
| 726 | * instead cleared when read. So we clear them both ways ... |
| 727 | */ |
| 728 | iowrite32(0, ioaddr + RxMissed); |
| 729 | ioread16(ioaddr + RxCRCErrs); |
| 730 | ioread16(ioaddr + RxMissed); |
| 731 | } |
| 732 | |
| 733 | #define RHINE_EVENT_NAPI_RX (IntrRxDone | \ |
| 734 | IntrRxErr | \ |
| 735 | IntrRxEmpty | \ |
| 736 | IntrRxOverflow | \ |
| 737 | IntrRxDropped | \ |
| 738 | IntrRxNoBuf | \ |
| 739 | IntrRxWakeUp) |
| 740 | |
| 741 | #define RHINE_EVENT_NAPI_TX_ERR (IntrTxError | \ |
| 742 | IntrTxAborted | \ |
| 743 | IntrTxUnderrun | \ |
| 744 | IntrTxDescRace) |
| 745 | #define RHINE_EVENT_NAPI_TX (IntrTxDone | RHINE_EVENT_NAPI_TX_ERR) |
| 746 | |
| 747 | #define RHINE_EVENT_NAPI (RHINE_EVENT_NAPI_RX | \ |
| 748 | RHINE_EVENT_NAPI_TX | \ |
| 749 | IntrStatsMax) |
| 750 | #define RHINE_EVENT_SLOW (IntrPCIErr | IntrLinkChange) |
| 751 | #define RHINE_EVENT (RHINE_EVENT_NAPI | RHINE_EVENT_SLOW) |
| 752 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 753 | static int rhine_napipoll(struct napi_struct *napi, int budget) |
Roger Luethi | 633949a | 2006-08-14 23:00:17 -0700 | [diff] [blame] | 754 | { |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 755 | struct rhine_private *rp = container_of(napi, struct rhine_private, napi); |
| 756 | struct net_device *dev = rp->dev; |
Roger Luethi | 633949a | 2006-08-14 23:00:17 -0700 | [diff] [blame] | 757 | void __iomem *ioaddr = rp->base; |
Francois Romieu | 7ab87ff | 2012-01-06 21:42:26 +0100 | [diff] [blame^] | 758 | u16 enable_mask = RHINE_EVENT & 0xffff; |
| 759 | int work_done = 0; |
| 760 | u32 status; |
Roger Luethi | 633949a | 2006-08-14 23:00:17 -0700 | [diff] [blame] | 761 | |
Francois Romieu | 7ab87ff | 2012-01-06 21:42:26 +0100 | [diff] [blame^] | 762 | status = rhine_get_events(rp); |
| 763 | rhine_ack_events(rp, status & ~RHINE_EVENT_SLOW); |
| 764 | |
| 765 | if (status & RHINE_EVENT_NAPI_RX) |
| 766 | work_done += rhine_rx(dev, budget); |
| 767 | |
| 768 | if (status & RHINE_EVENT_NAPI_TX) { |
| 769 | if (status & RHINE_EVENT_NAPI_TX_ERR) { |
| 770 | u8 cmd; |
| 771 | |
| 772 | /* Avoid scavenging before Tx engine turned off */ |
| 773 | RHINE_WAIT_FOR(!(ioread8(ioaddr + ChipCmd) & CmdTxOn)); |
| 774 | cmd = ioread8(ioaddr + ChipCmd); |
| 775 | if ((cmd & CmdTxOn) && (debug > 2)) { |
| 776 | netdev_warn(dev, "%s: Tx engine still on\n", |
| 777 | __func__); |
| 778 | } |
| 779 | } |
| 780 | rhine_tx(dev); |
| 781 | |
| 782 | if (status & RHINE_EVENT_NAPI_TX_ERR) |
| 783 | rhine_tx_err(rp, status); |
| 784 | } |
| 785 | |
| 786 | if (status & IntrStatsMax) { |
| 787 | spin_lock(&rp->lock); |
| 788 | rhine_update_rx_crc_and_missed_errord(rp); |
| 789 | spin_unlock(&rp->lock); |
| 790 | } |
| 791 | |
| 792 | if (status & RHINE_EVENT_SLOW) { |
| 793 | enable_mask &= ~RHINE_EVENT_SLOW; |
| 794 | schedule_work(&rp->slow_event_task); |
| 795 | } |
Roger Luethi | 633949a | 2006-08-14 23:00:17 -0700 | [diff] [blame] | 796 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 797 | if (work_done < budget) { |
Ben Hutchings | 288379f | 2009-01-19 16:43:59 -0800 | [diff] [blame] | 798 | napi_complete(napi); |
Francois Romieu | 7ab87ff | 2012-01-06 21:42:26 +0100 | [diff] [blame^] | 799 | iowrite16(enable_mask, ioaddr + IntrEnable); |
| 800 | mmiowb(); |
Roger Luethi | 633949a | 2006-08-14 23:00:17 -0700 | [diff] [blame] | 801 | } |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 802 | return work_done; |
Roger Luethi | 633949a | 2006-08-14 23:00:17 -0700 | [diff] [blame] | 803 | } |
Roger Luethi | 633949a | 2006-08-14 23:00:17 -0700 | [diff] [blame] | 804 | |
Adrian Bunk | de4e7c8 | 2008-01-30 22:02:05 +0200 | [diff] [blame] | 805 | static void __devinit rhine_hw_init(struct net_device *dev, long pioaddr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 806 | { |
| 807 | struct rhine_private *rp = netdev_priv(dev); |
| 808 | |
| 809 | /* Reset the chip to erase previous misconfiguration. */ |
| 810 | rhine_chip_reset(dev); |
| 811 | |
| 812 | /* Rhine-I needs extra time to recuperate before EEPROM reload */ |
| 813 | if (rp->quirks & rqRhineI) |
| 814 | msleep(5); |
| 815 | |
| 816 | /* Reload EEPROM controlled bytes cleared by soft reset */ |
| 817 | rhine_reload_eeprom(pioaddr, dev); |
| 818 | } |
| 819 | |
Stephen Hemminger | 5d1d07d | 2008-11-21 17:30:11 -0800 | [diff] [blame] | 820 | static const struct net_device_ops rhine_netdev_ops = { |
| 821 | .ndo_open = rhine_open, |
| 822 | .ndo_stop = rhine_close, |
| 823 | .ndo_start_xmit = rhine_start_tx, |
| 824 | .ndo_get_stats = rhine_get_stats, |
Jiri Pirko | afc4b13 | 2011-08-16 06:29:01 +0000 | [diff] [blame] | 825 | .ndo_set_rx_mode = rhine_set_rx_mode, |
Ben Hutchings | 635ecaa | 2009-07-09 17:59:01 +0000 | [diff] [blame] | 826 | .ndo_change_mtu = eth_change_mtu, |
Stephen Hemminger | 5d1d07d | 2008-11-21 17:30:11 -0800 | [diff] [blame] | 827 | .ndo_validate_addr = eth_validate_addr, |
Stephen Hemminger | fe96aaa | 2009-01-09 11:13:14 +0000 | [diff] [blame] | 828 | .ndo_set_mac_address = eth_mac_addr, |
Stephen Hemminger | 5d1d07d | 2008-11-21 17:30:11 -0800 | [diff] [blame] | 829 | .ndo_do_ioctl = netdev_ioctl, |
| 830 | .ndo_tx_timeout = rhine_tx_timeout, |
Roger Luethi | 38f49e8 | 2010-12-06 00:59:40 +0000 | [diff] [blame] | 831 | .ndo_vlan_rx_add_vid = rhine_vlan_rx_add_vid, |
| 832 | .ndo_vlan_rx_kill_vid = rhine_vlan_rx_kill_vid, |
Stephen Hemminger | 5d1d07d | 2008-11-21 17:30:11 -0800 | [diff] [blame] | 833 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 834 | .ndo_poll_controller = rhine_poll, |
| 835 | #endif |
| 836 | }; |
| 837 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 838 | static int __devinit rhine_init_one(struct pci_dev *pdev, |
| 839 | const struct pci_device_id *ent) |
| 840 | { |
| 841 | struct net_device *dev; |
| 842 | struct rhine_private *rp; |
| 843 | int i, rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 844 | u32 quirks; |
| 845 | long pioaddr; |
| 846 | long memaddr; |
| 847 | void __iomem *ioaddr; |
| 848 | int io_size, phy_id; |
| 849 | const char *name; |
| 850 | #ifdef USE_MMIO |
| 851 | int bar = 1; |
| 852 | #else |
| 853 | int bar = 0; |
| 854 | #endif |
| 855 | |
| 856 | /* when built into the kernel, we only print version if device is found */ |
| 857 | #ifndef MODULE |
Joe Perches | df4511f | 2011-04-16 14:15:25 +0000 | [diff] [blame] | 858 | pr_info_once("%s\n", version); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 859 | #endif |
| 860 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 861 | io_size = 256; |
| 862 | phy_id = 0; |
| 863 | quirks = 0; |
| 864 | name = "Rhine"; |
Auke Kok | 44c1013 | 2007-06-08 15:46:36 -0700 | [diff] [blame] | 865 | if (pdev->revision < VTunknown0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 866 | quirks = rqRhineI; |
| 867 | io_size = 128; |
| 868 | } |
Auke Kok | 44c1013 | 2007-06-08 15:46:36 -0700 | [diff] [blame] | 869 | else if (pdev->revision >= VT6102) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 870 | quirks = rqWOL | rqForceReset; |
Auke Kok | 44c1013 | 2007-06-08 15:46:36 -0700 | [diff] [blame] | 871 | if (pdev->revision < VT6105) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 872 | name = "Rhine II"; |
| 873 | quirks |= rqStatusWBRace; /* Rhine-II exclusive */ |
| 874 | } |
| 875 | else { |
| 876 | phy_id = 1; /* Integrated PHY, phy_id fixed to 1 */ |
Auke Kok | 44c1013 | 2007-06-08 15:46:36 -0700 | [diff] [blame] | 877 | if (pdev->revision >= VT6105_B0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 878 | quirks |= rq6patterns; |
Auke Kok | 44c1013 | 2007-06-08 15:46:36 -0700 | [diff] [blame] | 879 | if (pdev->revision < VT6105M) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 880 | name = "Rhine III"; |
| 881 | else |
| 882 | name = "Rhine III (Management Adapter)"; |
| 883 | } |
| 884 | } |
| 885 | |
| 886 | rc = pci_enable_device(pdev); |
| 887 | if (rc) |
| 888 | goto err_out; |
| 889 | |
| 890 | /* this should always be supported */ |
Yang Hongyang | 284901a | 2009-04-06 19:01:15 -0700 | [diff] [blame] | 891 | rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 892 | if (rc) { |
Joe Perches | df4511f | 2011-04-16 14:15:25 +0000 | [diff] [blame] | 893 | dev_err(&pdev->dev, |
| 894 | "32-bit PCI DMA addresses not supported by the card!?\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 895 | goto err_out; |
| 896 | } |
| 897 | |
| 898 | /* sanity check */ |
| 899 | if ((pci_resource_len(pdev, 0) < io_size) || |
| 900 | (pci_resource_len(pdev, 1) < io_size)) { |
| 901 | rc = -EIO; |
Joe Perches | df4511f | 2011-04-16 14:15:25 +0000 | [diff] [blame] | 902 | dev_err(&pdev->dev, "Insufficient PCI resources, aborting\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 903 | goto err_out; |
| 904 | } |
| 905 | |
| 906 | pioaddr = pci_resource_start(pdev, 0); |
| 907 | memaddr = pci_resource_start(pdev, 1); |
| 908 | |
| 909 | pci_set_master(pdev); |
| 910 | |
| 911 | dev = alloc_etherdev(sizeof(struct rhine_private)); |
| 912 | if (!dev) { |
| 913 | rc = -ENOMEM; |
Joe Perches | df4511f | 2011-04-16 14:15:25 +0000 | [diff] [blame] | 914 | dev_err(&pdev->dev, "alloc_etherdev failed\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 915 | goto err_out; |
| 916 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 917 | SET_NETDEV_DEV(dev, &pdev->dev); |
| 918 | |
| 919 | rp = netdev_priv(dev); |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 920 | rp->dev = dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 921 | rp->quirks = quirks; |
| 922 | rp->pioaddr = pioaddr; |
| 923 | rp->pdev = pdev; |
| 924 | |
| 925 | rc = pci_request_regions(pdev, DRV_NAME); |
| 926 | if (rc) |
| 927 | goto err_out_free_netdev; |
| 928 | |
| 929 | ioaddr = pci_iomap(pdev, bar, io_size); |
| 930 | if (!ioaddr) { |
| 931 | rc = -EIO; |
Joe Perches | df4511f | 2011-04-16 14:15:25 +0000 | [diff] [blame] | 932 | dev_err(&pdev->dev, |
| 933 | "ioremap failed for device %s, region 0x%X @ 0x%lX\n", |
| 934 | pci_name(pdev), io_size, memaddr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 935 | goto err_out_free_res; |
| 936 | } |
| 937 | |
| 938 | #ifdef USE_MMIO |
| 939 | enable_mmio(pioaddr, quirks); |
| 940 | |
| 941 | /* Check that selected MMIO registers match the PIO ones */ |
| 942 | i = 0; |
| 943 | while (mmio_verify_registers[i]) { |
| 944 | int reg = mmio_verify_registers[i++]; |
| 945 | unsigned char a = inb(pioaddr+reg); |
| 946 | unsigned char b = readb(ioaddr+reg); |
| 947 | if (a != b) { |
| 948 | rc = -EIO; |
Joe Perches | df4511f | 2011-04-16 14:15:25 +0000 | [diff] [blame] | 949 | dev_err(&pdev->dev, |
| 950 | "MMIO do not match PIO [%02x] (%02x != %02x)\n", |
| 951 | reg, a, b); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 952 | goto err_out_unmap; |
| 953 | } |
| 954 | } |
| 955 | #endif /* USE_MMIO */ |
| 956 | |
| 957 | dev->base_addr = (unsigned long)ioaddr; |
| 958 | rp->base = ioaddr; |
| 959 | |
| 960 | /* Get chip registers into a sane state */ |
| 961 | rhine_power_init(dev); |
| 962 | rhine_hw_init(dev, pioaddr); |
| 963 | |
| 964 | for (i = 0; i < 6; i++) |
| 965 | dev->dev_addr[i] = ioread8(ioaddr + StationAddr + i); |
| 966 | |
Joe Perches | 482e3fe | 2011-04-16 14:15:26 +0000 | [diff] [blame] | 967 | if (!is_valid_ether_addr(dev->dev_addr)) { |
| 968 | /* Report it and use a random ethernet address instead */ |
| 969 | netdev_err(dev, "Invalid MAC address: %pM\n", dev->dev_addr); |
| 970 | random_ether_addr(dev->dev_addr); |
| 971 | netdev_info(dev, "Using random MAC address: %pM\n", |
| 972 | dev->dev_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 973 | } |
Joe Perches | 482e3fe | 2011-04-16 14:15:26 +0000 | [diff] [blame] | 974 | memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 975 | |
| 976 | /* For Rhine-I/II, phy_id is loaded from EEPROM */ |
| 977 | if (!phy_id) |
| 978 | phy_id = ioread8(ioaddr + 0x6C); |
| 979 | |
| 980 | dev->irq = pdev->irq; |
| 981 | |
| 982 | spin_lock_init(&rp->lock); |
Francois Romieu | 7ab87ff | 2012-01-06 21:42:26 +0100 | [diff] [blame^] | 983 | mutex_init(&rp->task_lock); |
Jarek Poplawski | c0d7a02 | 2009-12-23 21:54:29 -0800 | [diff] [blame] | 984 | INIT_WORK(&rp->reset_task, rhine_reset_task); |
Francois Romieu | 7ab87ff | 2012-01-06 21:42:26 +0100 | [diff] [blame^] | 985 | INIT_WORK(&rp->slow_event_task, rhine_slow_event_task); |
Jarek Poplawski | c0d7a02 | 2009-12-23 21:54:29 -0800 | [diff] [blame] | 986 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 987 | rp->mii_if.dev = dev; |
| 988 | rp->mii_if.mdio_read = mdio_read; |
| 989 | rp->mii_if.mdio_write = mdio_write; |
| 990 | rp->mii_if.phy_id_mask = 0x1f; |
| 991 | rp->mii_if.reg_num_mask = 0x1f; |
| 992 | |
| 993 | /* The chip-specific entries in the device structure. */ |
Stephen Hemminger | 5d1d07d | 2008-11-21 17:30:11 -0800 | [diff] [blame] | 994 | dev->netdev_ops = &rhine_netdev_ops; |
| 995 | dev->ethtool_ops = &netdev_ethtool_ops, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 996 | dev->watchdog_timeo = TX_TIMEOUT; |
Stephen Hemminger | 5d1d07d | 2008-11-21 17:30:11 -0800 | [diff] [blame] | 997 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 998 | netif_napi_add(dev, &rp->napi, rhine_napipoll, 64); |
Francois Romieu | 32b0f53 | 2008-07-11 00:30:14 +0200 | [diff] [blame] | 999 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1000 | if (rp->quirks & rqRhineI) |
| 1001 | dev->features |= NETIF_F_SG|NETIF_F_HW_CSUM; |
| 1002 | |
Roger Luethi | 38f49e8 | 2010-12-06 00:59:40 +0000 | [diff] [blame] | 1003 | if (pdev->revision >= VT6105M) |
| 1004 | dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX | |
| 1005 | NETIF_F_HW_VLAN_FILTER; |
| 1006 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1007 | /* dev->name not defined before register_netdev()! */ |
| 1008 | rc = register_netdev(dev); |
| 1009 | if (rc) |
| 1010 | goto err_out_unmap; |
| 1011 | |
Joe Perches | df4511f | 2011-04-16 14:15:25 +0000 | [diff] [blame] | 1012 | netdev_info(dev, "VIA %s at 0x%lx, %pM, IRQ %d\n", |
| 1013 | name, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1014 | #ifdef USE_MMIO |
Joe Perches | df4511f | 2011-04-16 14:15:25 +0000 | [diff] [blame] | 1015 | memaddr, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1016 | #else |
Joe Perches | df4511f | 2011-04-16 14:15:25 +0000 | [diff] [blame] | 1017 | (long)ioaddr, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1018 | #endif |
Joe Perches | df4511f | 2011-04-16 14:15:25 +0000 | [diff] [blame] | 1019 | dev->dev_addr, pdev->irq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1020 | |
| 1021 | pci_set_drvdata(pdev, dev); |
| 1022 | |
| 1023 | { |
| 1024 | u16 mii_cmd; |
| 1025 | int mii_status = mdio_read(dev, phy_id, 1); |
| 1026 | mii_cmd = mdio_read(dev, phy_id, MII_BMCR) & ~BMCR_ISOLATE; |
| 1027 | mdio_write(dev, phy_id, MII_BMCR, mii_cmd); |
| 1028 | if (mii_status != 0xffff && mii_status != 0x0000) { |
| 1029 | rp->mii_if.advertising = mdio_read(dev, phy_id, 4); |
Joe Perches | df4511f | 2011-04-16 14:15:25 +0000 | [diff] [blame] | 1030 | netdev_info(dev, |
| 1031 | "MII PHY found at address %d, status 0x%04x advertising %04x Link %04x\n", |
| 1032 | phy_id, |
| 1033 | mii_status, rp->mii_if.advertising, |
| 1034 | mdio_read(dev, phy_id, 5)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1035 | |
| 1036 | /* set IFF_RUNNING */ |
| 1037 | if (mii_status & BMSR_LSTATUS) |
| 1038 | netif_carrier_on(dev); |
| 1039 | else |
| 1040 | netif_carrier_off(dev); |
| 1041 | |
| 1042 | } |
| 1043 | } |
| 1044 | rp->mii_if.phy_id = phy_id; |
Roger Luethi | b933b4d | 2006-08-14 23:00:21 -0700 | [diff] [blame] | 1045 | if (debug > 1 && avoid_D3) |
Joe Perches | df4511f | 2011-04-16 14:15:25 +0000 | [diff] [blame] | 1046 | netdev_info(dev, "No D3 power state at shutdown\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1047 | |
| 1048 | return 0; |
| 1049 | |
| 1050 | err_out_unmap: |
| 1051 | pci_iounmap(pdev, ioaddr); |
| 1052 | err_out_free_res: |
| 1053 | pci_release_regions(pdev); |
| 1054 | err_out_free_netdev: |
| 1055 | free_netdev(dev); |
| 1056 | err_out: |
| 1057 | return rc; |
| 1058 | } |
| 1059 | |
| 1060 | static int alloc_ring(struct net_device* dev) |
| 1061 | { |
| 1062 | struct rhine_private *rp = netdev_priv(dev); |
| 1063 | void *ring; |
| 1064 | dma_addr_t ring_dma; |
| 1065 | |
| 1066 | ring = pci_alloc_consistent(rp->pdev, |
| 1067 | RX_RING_SIZE * sizeof(struct rx_desc) + |
| 1068 | TX_RING_SIZE * sizeof(struct tx_desc), |
| 1069 | &ring_dma); |
| 1070 | if (!ring) { |
Joe Perches | df4511f | 2011-04-16 14:15:25 +0000 | [diff] [blame] | 1071 | netdev_err(dev, "Could not allocate DMA memory\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1072 | return -ENOMEM; |
| 1073 | } |
| 1074 | if (rp->quirks & rqRhineI) { |
| 1075 | rp->tx_bufs = pci_alloc_consistent(rp->pdev, |
| 1076 | PKT_BUF_SZ * TX_RING_SIZE, |
| 1077 | &rp->tx_bufs_dma); |
| 1078 | if (rp->tx_bufs == NULL) { |
| 1079 | pci_free_consistent(rp->pdev, |
| 1080 | RX_RING_SIZE * sizeof(struct rx_desc) + |
| 1081 | TX_RING_SIZE * sizeof(struct tx_desc), |
| 1082 | ring, ring_dma); |
| 1083 | return -ENOMEM; |
| 1084 | } |
| 1085 | } |
| 1086 | |
| 1087 | rp->rx_ring = ring; |
| 1088 | rp->tx_ring = ring + RX_RING_SIZE * sizeof(struct rx_desc); |
| 1089 | rp->rx_ring_dma = ring_dma; |
| 1090 | rp->tx_ring_dma = ring_dma + RX_RING_SIZE * sizeof(struct rx_desc); |
| 1091 | |
| 1092 | return 0; |
| 1093 | } |
| 1094 | |
| 1095 | static void free_ring(struct net_device* dev) |
| 1096 | { |
| 1097 | struct rhine_private *rp = netdev_priv(dev); |
| 1098 | |
| 1099 | pci_free_consistent(rp->pdev, |
| 1100 | RX_RING_SIZE * sizeof(struct rx_desc) + |
| 1101 | TX_RING_SIZE * sizeof(struct tx_desc), |
| 1102 | rp->rx_ring, rp->rx_ring_dma); |
| 1103 | rp->tx_ring = NULL; |
| 1104 | |
| 1105 | if (rp->tx_bufs) |
| 1106 | pci_free_consistent(rp->pdev, PKT_BUF_SZ * TX_RING_SIZE, |
| 1107 | rp->tx_bufs, rp->tx_bufs_dma); |
| 1108 | |
| 1109 | rp->tx_bufs = NULL; |
| 1110 | |
| 1111 | } |
| 1112 | |
| 1113 | static void alloc_rbufs(struct net_device *dev) |
| 1114 | { |
| 1115 | struct rhine_private *rp = netdev_priv(dev); |
| 1116 | dma_addr_t next; |
| 1117 | int i; |
| 1118 | |
| 1119 | rp->dirty_rx = rp->cur_rx = 0; |
| 1120 | |
| 1121 | rp->rx_buf_sz = (dev->mtu <= 1500 ? PKT_BUF_SZ : dev->mtu + 32); |
| 1122 | rp->rx_head_desc = &rp->rx_ring[0]; |
| 1123 | next = rp->rx_ring_dma; |
| 1124 | |
| 1125 | /* Init the ring entries */ |
| 1126 | for (i = 0; i < RX_RING_SIZE; i++) { |
| 1127 | rp->rx_ring[i].rx_status = 0; |
| 1128 | rp->rx_ring[i].desc_length = cpu_to_le32(rp->rx_buf_sz); |
| 1129 | next += sizeof(struct rx_desc); |
| 1130 | rp->rx_ring[i].next_desc = cpu_to_le32(next); |
| 1131 | rp->rx_skbuff[i] = NULL; |
| 1132 | } |
| 1133 | /* Mark the last entry as wrapping the ring. */ |
| 1134 | rp->rx_ring[i-1].next_desc = cpu_to_le32(rp->rx_ring_dma); |
| 1135 | |
| 1136 | /* Fill in the Rx buffers. Handle allocation failure gracefully. */ |
| 1137 | for (i = 0; i < RX_RING_SIZE; i++) { |
Kevin Lo | b26b555 | 2008-08-27 11:35:09 +0800 | [diff] [blame] | 1138 | struct sk_buff *skb = netdev_alloc_skb(dev, rp->rx_buf_sz); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1139 | rp->rx_skbuff[i] = skb; |
| 1140 | if (skb == NULL) |
| 1141 | break; |
| 1142 | skb->dev = dev; /* Mark as being used by this device. */ |
| 1143 | |
| 1144 | rp->rx_skbuff_dma[i] = |
David S. Miller | 689be43 | 2005-06-28 15:25:31 -0700 | [diff] [blame] | 1145 | pci_map_single(rp->pdev, skb->data, rp->rx_buf_sz, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1146 | PCI_DMA_FROMDEVICE); |
| 1147 | |
| 1148 | rp->rx_ring[i].addr = cpu_to_le32(rp->rx_skbuff_dma[i]); |
| 1149 | rp->rx_ring[i].rx_status = cpu_to_le32(DescOwn); |
| 1150 | } |
| 1151 | rp->dirty_rx = (unsigned int)(i - RX_RING_SIZE); |
| 1152 | } |
| 1153 | |
| 1154 | static void free_rbufs(struct net_device* dev) |
| 1155 | { |
| 1156 | struct rhine_private *rp = netdev_priv(dev); |
| 1157 | int i; |
| 1158 | |
| 1159 | /* Free all the skbuffs in the Rx queue. */ |
| 1160 | for (i = 0; i < RX_RING_SIZE; i++) { |
| 1161 | rp->rx_ring[i].rx_status = 0; |
| 1162 | rp->rx_ring[i].addr = cpu_to_le32(0xBADF00D0); /* An invalid address. */ |
| 1163 | if (rp->rx_skbuff[i]) { |
| 1164 | pci_unmap_single(rp->pdev, |
| 1165 | rp->rx_skbuff_dma[i], |
| 1166 | rp->rx_buf_sz, PCI_DMA_FROMDEVICE); |
| 1167 | dev_kfree_skb(rp->rx_skbuff[i]); |
| 1168 | } |
| 1169 | rp->rx_skbuff[i] = NULL; |
| 1170 | } |
| 1171 | } |
| 1172 | |
| 1173 | static void alloc_tbufs(struct net_device* dev) |
| 1174 | { |
| 1175 | struct rhine_private *rp = netdev_priv(dev); |
| 1176 | dma_addr_t next; |
| 1177 | int i; |
| 1178 | |
| 1179 | rp->dirty_tx = rp->cur_tx = 0; |
| 1180 | next = rp->tx_ring_dma; |
| 1181 | for (i = 0; i < TX_RING_SIZE; i++) { |
| 1182 | rp->tx_skbuff[i] = NULL; |
| 1183 | rp->tx_ring[i].tx_status = 0; |
| 1184 | rp->tx_ring[i].desc_length = cpu_to_le32(TXDESC); |
| 1185 | next += sizeof(struct tx_desc); |
| 1186 | rp->tx_ring[i].next_desc = cpu_to_le32(next); |
Roger Luethi | 4be5de2 | 2006-04-04 20:49:16 +0200 | [diff] [blame] | 1187 | if (rp->quirks & rqRhineI) |
| 1188 | rp->tx_buf[i] = &rp->tx_bufs[i * PKT_BUF_SZ]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1189 | } |
| 1190 | rp->tx_ring[i-1].next_desc = cpu_to_le32(rp->tx_ring_dma); |
| 1191 | |
| 1192 | } |
| 1193 | |
| 1194 | static void free_tbufs(struct net_device* dev) |
| 1195 | { |
| 1196 | struct rhine_private *rp = netdev_priv(dev); |
| 1197 | int i; |
| 1198 | |
| 1199 | for (i = 0; i < TX_RING_SIZE; i++) { |
| 1200 | rp->tx_ring[i].tx_status = 0; |
| 1201 | rp->tx_ring[i].desc_length = cpu_to_le32(TXDESC); |
| 1202 | rp->tx_ring[i].addr = cpu_to_le32(0xBADF00D0); /* An invalid address. */ |
| 1203 | if (rp->tx_skbuff[i]) { |
| 1204 | if (rp->tx_skbuff_dma[i]) { |
| 1205 | pci_unmap_single(rp->pdev, |
| 1206 | rp->tx_skbuff_dma[i], |
| 1207 | rp->tx_skbuff[i]->len, |
| 1208 | PCI_DMA_TODEVICE); |
| 1209 | } |
| 1210 | dev_kfree_skb(rp->tx_skbuff[i]); |
| 1211 | } |
| 1212 | rp->tx_skbuff[i] = NULL; |
| 1213 | rp->tx_buf[i] = NULL; |
| 1214 | } |
| 1215 | } |
| 1216 | |
| 1217 | static void rhine_check_media(struct net_device *dev, unsigned int init_media) |
| 1218 | { |
| 1219 | struct rhine_private *rp = netdev_priv(dev); |
| 1220 | void __iomem *ioaddr = rp->base; |
| 1221 | |
| 1222 | mii_check_media(&rp->mii_if, debug, init_media); |
| 1223 | |
| 1224 | if (rp->mii_if.full_duplex) |
| 1225 | iowrite8(ioread8(ioaddr + ChipCmd1) | Cmd1FDuplex, |
| 1226 | ioaddr + ChipCmd1); |
| 1227 | else |
| 1228 | iowrite8(ioread8(ioaddr + ChipCmd1) & ~Cmd1FDuplex, |
| 1229 | ioaddr + ChipCmd1); |
Roger Luethi | 00b428c | 2006-03-28 20:53:56 +0200 | [diff] [blame] | 1230 | if (debug > 1) |
Joe Perches | df4511f | 2011-04-16 14:15:25 +0000 | [diff] [blame] | 1231 | netdev_info(dev, "force_media %d, carrier %d\n", |
| 1232 | rp->mii_if.force_media, netif_carrier_ok(dev)); |
Roger Luethi | 00b428c | 2006-03-28 20:53:56 +0200 | [diff] [blame] | 1233 | } |
| 1234 | |
| 1235 | /* Called after status of force_media possibly changed */ |
Adrian Bunk | 0761be4 | 2006-04-10 23:22:21 -0700 | [diff] [blame] | 1236 | static void rhine_set_carrier(struct mii_if_info *mii) |
Roger Luethi | 00b428c | 2006-03-28 20:53:56 +0200 | [diff] [blame] | 1237 | { |
| 1238 | if (mii->force_media) { |
| 1239 | /* autoneg is off: Link is always assumed to be up */ |
| 1240 | if (!netif_carrier_ok(mii->dev)) |
| 1241 | netif_carrier_on(mii->dev); |
| 1242 | } |
| 1243 | else /* Let MMI library update carrier status */ |
| 1244 | rhine_check_media(mii->dev, 0); |
| 1245 | if (debug > 1) |
Joe Perches | df4511f | 2011-04-16 14:15:25 +0000 | [diff] [blame] | 1246 | netdev_info(mii->dev, "force_media %d, carrier %d\n", |
| 1247 | mii->force_media, netif_carrier_ok(mii->dev)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1248 | } |
| 1249 | |
Roger Luethi | 38f49e8 | 2010-12-06 00:59:40 +0000 | [diff] [blame] | 1250 | /** |
| 1251 | * rhine_set_cam - set CAM multicast filters |
| 1252 | * @ioaddr: register block of this Rhine |
| 1253 | * @idx: multicast CAM index [0..MCAM_SIZE-1] |
| 1254 | * @addr: multicast address (6 bytes) |
| 1255 | * |
| 1256 | * Load addresses into multicast filters. |
| 1257 | */ |
| 1258 | static void rhine_set_cam(void __iomem *ioaddr, int idx, u8 *addr) |
| 1259 | { |
| 1260 | int i; |
| 1261 | |
| 1262 | iowrite8(CAMC_CAMEN, ioaddr + CamCon); |
| 1263 | wmb(); |
| 1264 | |
| 1265 | /* Paranoid -- idx out of range should never happen */ |
| 1266 | idx &= (MCAM_SIZE - 1); |
| 1267 | |
| 1268 | iowrite8((u8) idx, ioaddr + CamAddr); |
| 1269 | |
| 1270 | for (i = 0; i < 6; i++, addr++) |
| 1271 | iowrite8(*addr, ioaddr + MulticastFilter0 + i); |
| 1272 | udelay(10); |
| 1273 | wmb(); |
| 1274 | |
| 1275 | iowrite8(CAMC_CAMWR | CAMC_CAMEN, ioaddr + CamCon); |
| 1276 | udelay(10); |
| 1277 | |
| 1278 | iowrite8(0, ioaddr + CamCon); |
| 1279 | } |
| 1280 | |
| 1281 | /** |
| 1282 | * rhine_set_vlan_cam - set CAM VLAN filters |
| 1283 | * @ioaddr: register block of this Rhine |
| 1284 | * @idx: VLAN CAM index [0..VCAM_SIZE-1] |
| 1285 | * @addr: VLAN ID (2 bytes) |
| 1286 | * |
| 1287 | * Load addresses into VLAN filters. |
| 1288 | */ |
| 1289 | static void rhine_set_vlan_cam(void __iomem *ioaddr, int idx, u8 *addr) |
| 1290 | { |
| 1291 | iowrite8(CAMC_CAMEN | CAMC_VCAMSL, ioaddr + CamCon); |
| 1292 | wmb(); |
| 1293 | |
| 1294 | /* Paranoid -- idx out of range should never happen */ |
| 1295 | idx &= (VCAM_SIZE - 1); |
| 1296 | |
| 1297 | iowrite8((u8) idx, ioaddr + CamAddr); |
| 1298 | |
| 1299 | iowrite16(*((u16 *) addr), ioaddr + MulticastFilter0 + 6); |
| 1300 | udelay(10); |
| 1301 | wmb(); |
| 1302 | |
| 1303 | iowrite8(CAMC_CAMWR | CAMC_CAMEN, ioaddr + CamCon); |
| 1304 | udelay(10); |
| 1305 | |
| 1306 | iowrite8(0, ioaddr + CamCon); |
| 1307 | } |
| 1308 | |
| 1309 | /** |
| 1310 | * rhine_set_cam_mask - set multicast CAM mask |
| 1311 | * @ioaddr: register block of this Rhine |
| 1312 | * @mask: multicast CAM mask |
| 1313 | * |
| 1314 | * Mask sets multicast filters active/inactive. |
| 1315 | */ |
| 1316 | static void rhine_set_cam_mask(void __iomem *ioaddr, u32 mask) |
| 1317 | { |
| 1318 | iowrite8(CAMC_CAMEN, ioaddr + CamCon); |
| 1319 | wmb(); |
| 1320 | |
| 1321 | /* write mask */ |
| 1322 | iowrite32(mask, ioaddr + CamMask); |
| 1323 | |
| 1324 | /* disable CAMEN */ |
| 1325 | iowrite8(0, ioaddr + CamCon); |
| 1326 | } |
| 1327 | |
| 1328 | /** |
| 1329 | * rhine_set_vlan_cam_mask - set VLAN CAM mask |
| 1330 | * @ioaddr: register block of this Rhine |
| 1331 | * @mask: VLAN CAM mask |
| 1332 | * |
| 1333 | * Mask sets VLAN filters active/inactive. |
| 1334 | */ |
| 1335 | static void rhine_set_vlan_cam_mask(void __iomem *ioaddr, u32 mask) |
| 1336 | { |
| 1337 | iowrite8(CAMC_CAMEN | CAMC_VCAMSL, ioaddr + CamCon); |
| 1338 | wmb(); |
| 1339 | |
| 1340 | /* write mask */ |
| 1341 | iowrite32(mask, ioaddr + CamMask); |
| 1342 | |
| 1343 | /* disable CAMEN */ |
| 1344 | iowrite8(0, ioaddr + CamCon); |
| 1345 | } |
| 1346 | |
| 1347 | /** |
| 1348 | * rhine_init_cam_filter - initialize CAM filters |
| 1349 | * @dev: network device |
| 1350 | * |
| 1351 | * Initialize (disable) hardware VLAN and multicast support on this |
| 1352 | * Rhine. |
| 1353 | */ |
| 1354 | static void rhine_init_cam_filter(struct net_device *dev) |
| 1355 | { |
| 1356 | struct rhine_private *rp = netdev_priv(dev); |
| 1357 | void __iomem *ioaddr = rp->base; |
| 1358 | |
| 1359 | /* Disable all CAMs */ |
| 1360 | rhine_set_vlan_cam_mask(ioaddr, 0); |
| 1361 | rhine_set_cam_mask(ioaddr, 0); |
| 1362 | |
| 1363 | /* disable hardware VLAN support */ |
| 1364 | BYTE_REG_BITS_ON(TCR_PQEN, ioaddr + TxConfig); |
| 1365 | BYTE_REG_BITS_OFF(BCR1_VIDFR, ioaddr + PCIBusConfig1); |
| 1366 | } |
| 1367 | |
| 1368 | /** |
| 1369 | * rhine_update_vcam - update VLAN CAM filters |
| 1370 | * @rp: rhine_private data of this Rhine |
| 1371 | * |
| 1372 | * Update VLAN CAM filters to match configuration change. |
| 1373 | */ |
| 1374 | static void rhine_update_vcam(struct net_device *dev) |
| 1375 | { |
| 1376 | struct rhine_private *rp = netdev_priv(dev); |
| 1377 | void __iomem *ioaddr = rp->base; |
| 1378 | u16 vid; |
| 1379 | u32 vCAMmask = 0; /* 32 vCAMs (6105M and better) */ |
| 1380 | unsigned int i = 0; |
| 1381 | |
| 1382 | for_each_set_bit(vid, rp->active_vlans, VLAN_N_VID) { |
| 1383 | rhine_set_vlan_cam(ioaddr, i, (u8 *)&vid); |
| 1384 | vCAMmask |= 1 << i; |
| 1385 | if (++i >= VCAM_SIZE) |
| 1386 | break; |
| 1387 | } |
| 1388 | rhine_set_vlan_cam_mask(ioaddr, vCAMmask); |
| 1389 | } |
| 1390 | |
Jiri Pirko | 8e58613 | 2011-12-08 19:52:37 -0500 | [diff] [blame] | 1391 | static int rhine_vlan_rx_add_vid(struct net_device *dev, unsigned short vid) |
Roger Luethi | 38f49e8 | 2010-12-06 00:59:40 +0000 | [diff] [blame] | 1392 | { |
| 1393 | struct rhine_private *rp = netdev_priv(dev); |
| 1394 | |
Francois Romieu | 7ab87ff | 2012-01-06 21:42:26 +0100 | [diff] [blame^] | 1395 | spin_lock_bh(&rp->lock); |
Roger Luethi | 38f49e8 | 2010-12-06 00:59:40 +0000 | [diff] [blame] | 1396 | set_bit(vid, rp->active_vlans); |
| 1397 | rhine_update_vcam(dev); |
Francois Romieu | 7ab87ff | 2012-01-06 21:42:26 +0100 | [diff] [blame^] | 1398 | spin_unlock_bh(&rp->lock); |
Jiri Pirko | 8e58613 | 2011-12-08 19:52:37 -0500 | [diff] [blame] | 1399 | return 0; |
Roger Luethi | 38f49e8 | 2010-12-06 00:59:40 +0000 | [diff] [blame] | 1400 | } |
| 1401 | |
Jiri Pirko | 8e58613 | 2011-12-08 19:52:37 -0500 | [diff] [blame] | 1402 | static int rhine_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid) |
Roger Luethi | 38f49e8 | 2010-12-06 00:59:40 +0000 | [diff] [blame] | 1403 | { |
| 1404 | struct rhine_private *rp = netdev_priv(dev); |
| 1405 | |
Francois Romieu | 7ab87ff | 2012-01-06 21:42:26 +0100 | [diff] [blame^] | 1406 | spin_lock_bh(&rp->lock); |
Roger Luethi | 38f49e8 | 2010-12-06 00:59:40 +0000 | [diff] [blame] | 1407 | clear_bit(vid, rp->active_vlans); |
| 1408 | rhine_update_vcam(dev); |
Francois Romieu | 7ab87ff | 2012-01-06 21:42:26 +0100 | [diff] [blame^] | 1409 | spin_unlock_bh(&rp->lock); |
Jiri Pirko | 8e58613 | 2011-12-08 19:52:37 -0500 | [diff] [blame] | 1410 | return 0; |
Roger Luethi | 38f49e8 | 2010-12-06 00:59:40 +0000 | [diff] [blame] | 1411 | } |
| 1412 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1413 | static void init_registers(struct net_device *dev) |
| 1414 | { |
| 1415 | struct rhine_private *rp = netdev_priv(dev); |
| 1416 | void __iomem *ioaddr = rp->base; |
| 1417 | int i; |
| 1418 | |
| 1419 | for (i = 0; i < 6; i++) |
| 1420 | iowrite8(dev->dev_addr[i], ioaddr + StationAddr + i); |
| 1421 | |
| 1422 | /* Initialize other registers. */ |
| 1423 | iowrite16(0x0006, ioaddr + PCIBusConfig); /* Tune configuration??? */ |
| 1424 | /* Configure initial FIFO thresholds. */ |
| 1425 | iowrite8(0x20, ioaddr + TxConfig); |
| 1426 | rp->tx_thresh = 0x20; |
| 1427 | rp->rx_thresh = 0x60; /* Written in rhine_set_rx_mode(). */ |
| 1428 | |
| 1429 | iowrite32(rp->rx_ring_dma, ioaddr + RxRingPtr); |
| 1430 | iowrite32(rp->tx_ring_dma, ioaddr + TxRingPtr); |
| 1431 | |
| 1432 | rhine_set_rx_mode(dev); |
| 1433 | |
Roger Luethi | 38f49e8 | 2010-12-06 00:59:40 +0000 | [diff] [blame] | 1434 | if (rp->pdev->revision >= VT6105M) |
| 1435 | rhine_init_cam_filter(dev); |
| 1436 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1437 | napi_enable(&rp->napi); |
Stephen Hemminger | ab19766 | 2006-08-14 23:00:18 -0700 | [diff] [blame] | 1438 | |
Francois Romieu | 7ab87ff | 2012-01-06 21:42:26 +0100 | [diff] [blame^] | 1439 | iowrite16(RHINE_EVENT & 0xffff, ioaddr + IntrEnable); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1440 | |
| 1441 | iowrite16(CmdStart | CmdTxOn | CmdRxOn | (Cmd1NoTxPoll << 8), |
| 1442 | ioaddr + ChipCmd); |
| 1443 | rhine_check_media(dev, 1); |
| 1444 | } |
| 1445 | |
| 1446 | /* Enable MII link status auto-polling (required for IntrLinkChange) */ |
| 1447 | static void rhine_enable_linkmon(void __iomem *ioaddr) |
| 1448 | { |
| 1449 | iowrite8(0, ioaddr + MIICmd); |
| 1450 | iowrite8(MII_BMSR, ioaddr + MIIRegAddr); |
| 1451 | iowrite8(0x80, ioaddr + MIICmd); |
| 1452 | |
| 1453 | RHINE_WAIT_FOR((ioread8(ioaddr + MIIRegAddr) & 0x20)); |
| 1454 | |
| 1455 | iowrite8(MII_BMSR | 0x40, ioaddr + MIIRegAddr); |
| 1456 | } |
| 1457 | |
| 1458 | /* Disable MII link status auto-polling (required for MDIO access) */ |
| 1459 | static void rhine_disable_linkmon(void __iomem *ioaddr, u32 quirks) |
| 1460 | { |
| 1461 | iowrite8(0, ioaddr + MIICmd); |
| 1462 | |
| 1463 | if (quirks & rqRhineI) { |
| 1464 | iowrite8(0x01, ioaddr + MIIRegAddr); // MII_BMSR |
| 1465 | |
John W. Linville | 38bb6b2 | 2006-05-19 10:51:21 -0400 | [diff] [blame] | 1466 | /* Can be called from ISR. Evil. */ |
| 1467 | mdelay(1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1468 | |
| 1469 | /* 0x80 must be set immediately before turning it off */ |
| 1470 | iowrite8(0x80, ioaddr + MIICmd); |
| 1471 | |
| 1472 | RHINE_WAIT_FOR(ioread8(ioaddr + MIIRegAddr) & 0x20); |
| 1473 | |
| 1474 | /* Heh. Now clear 0x80 again. */ |
| 1475 | iowrite8(0, ioaddr + MIICmd); |
| 1476 | } |
| 1477 | else |
| 1478 | RHINE_WAIT_FOR(ioread8(ioaddr + MIIRegAddr) & 0x80); |
| 1479 | } |
| 1480 | |
| 1481 | /* Read and write over the MII Management Data I/O (MDIO) interface. */ |
| 1482 | |
| 1483 | static int mdio_read(struct net_device *dev, int phy_id, int regnum) |
| 1484 | { |
| 1485 | struct rhine_private *rp = netdev_priv(dev); |
| 1486 | void __iomem *ioaddr = rp->base; |
| 1487 | int result; |
| 1488 | |
| 1489 | rhine_disable_linkmon(ioaddr, rp->quirks); |
| 1490 | |
| 1491 | /* rhine_disable_linkmon already cleared MIICmd */ |
| 1492 | iowrite8(phy_id, ioaddr + MIIPhyAddr); |
| 1493 | iowrite8(regnum, ioaddr + MIIRegAddr); |
| 1494 | iowrite8(0x40, ioaddr + MIICmd); /* Trigger read */ |
| 1495 | RHINE_WAIT_FOR(!(ioread8(ioaddr + MIICmd) & 0x40)); |
| 1496 | result = ioread16(ioaddr + MIIData); |
| 1497 | |
| 1498 | rhine_enable_linkmon(ioaddr); |
| 1499 | return result; |
| 1500 | } |
| 1501 | |
| 1502 | static void mdio_write(struct net_device *dev, int phy_id, int regnum, int value) |
| 1503 | { |
| 1504 | struct rhine_private *rp = netdev_priv(dev); |
| 1505 | void __iomem *ioaddr = rp->base; |
| 1506 | |
| 1507 | rhine_disable_linkmon(ioaddr, rp->quirks); |
| 1508 | |
| 1509 | /* rhine_disable_linkmon already cleared MIICmd */ |
| 1510 | iowrite8(phy_id, ioaddr + MIIPhyAddr); |
| 1511 | iowrite8(regnum, ioaddr + MIIRegAddr); |
| 1512 | iowrite16(value, ioaddr + MIIData); |
| 1513 | iowrite8(0x20, ioaddr + MIICmd); /* Trigger write */ |
| 1514 | RHINE_WAIT_FOR(!(ioread8(ioaddr + MIICmd) & 0x20)); |
| 1515 | |
| 1516 | rhine_enable_linkmon(ioaddr); |
| 1517 | } |
| 1518 | |
Francois Romieu | 7ab87ff | 2012-01-06 21:42:26 +0100 | [diff] [blame^] | 1519 | static void rhine_task_disable(struct rhine_private *rp) |
| 1520 | { |
| 1521 | mutex_lock(&rp->task_lock); |
| 1522 | rp->task_enable = false; |
| 1523 | mutex_unlock(&rp->task_lock); |
| 1524 | |
| 1525 | cancel_work_sync(&rp->slow_event_task); |
| 1526 | cancel_work_sync(&rp->reset_task); |
| 1527 | } |
| 1528 | |
| 1529 | static void rhine_task_enable(struct rhine_private *rp) |
| 1530 | { |
| 1531 | mutex_lock(&rp->task_lock); |
| 1532 | rp->task_enable = true; |
| 1533 | mutex_unlock(&rp->task_lock); |
| 1534 | } |
| 1535 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1536 | static int rhine_open(struct net_device *dev) |
| 1537 | { |
| 1538 | struct rhine_private *rp = netdev_priv(dev); |
| 1539 | void __iomem *ioaddr = rp->base; |
| 1540 | int rc; |
| 1541 | |
Julia Lawall | 7678138 | 2009-11-18 08:23:53 +0000 | [diff] [blame] | 1542 | rc = request_irq(rp->pdev->irq, rhine_interrupt, IRQF_SHARED, dev->name, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1543 | dev); |
| 1544 | if (rc) |
| 1545 | return rc; |
| 1546 | |
| 1547 | if (debug > 1) |
Joe Perches | df4511f | 2011-04-16 14:15:25 +0000 | [diff] [blame] | 1548 | netdev_dbg(dev, "%s() irq %d\n", __func__, rp->pdev->irq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1549 | |
| 1550 | rc = alloc_ring(dev); |
| 1551 | if (rc) { |
| 1552 | free_irq(rp->pdev->irq, dev); |
| 1553 | return rc; |
| 1554 | } |
| 1555 | alloc_rbufs(dev); |
| 1556 | alloc_tbufs(dev); |
| 1557 | rhine_chip_reset(dev); |
Francois Romieu | 7ab87ff | 2012-01-06 21:42:26 +0100 | [diff] [blame^] | 1558 | rhine_task_enable(rp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1559 | init_registers(dev); |
| 1560 | if (debug > 2) |
Joe Perches | df4511f | 2011-04-16 14:15:25 +0000 | [diff] [blame] | 1561 | netdev_dbg(dev, "%s() Done - status %04x MII status: %04x\n", |
| 1562 | __func__, ioread16(ioaddr + ChipCmd), |
| 1563 | mdio_read(dev, rp->mii_if.phy_id, MII_BMSR)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1564 | |
| 1565 | netif_start_queue(dev); |
| 1566 | |
| 1567 | return 0; |
| 1568 | } |
| 1569 | |
Jarek Poplawski | c0d7a02 | 2009-12-23 21:54:29 -0800 | [diff] [blame] | 1570 | static void rhine_reset_task(struct work_struct *work) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1571 | { |
Jarek Poplawski | c0d7a02 | 2009-12-23 21:54:29 -0800 | [diff] [blame] | 1572 | struct rhine_private *rp = container_of(work, struct rhine_private, |
| 1573 | reset_task); |
| 1574 | struct net_device *dev = rp->dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1575 | |
Francois Romieu | 7ab87ff | 2012-01-06 21:42:26 +0100 | [diff] [blame^] | 1576 | mutex_lock(&rp->task_lock); |
| 1577 | |
| 1578 | if (!rp->task_enable) |
| 1579 | goto out_unlock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1580 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1581 | napi_disable(&rp->napi); |
Jarek Poplawski | c0d7a02 | 2009-12-23 21:54:29 -0800 | [diff] [blame] | 1582 | spin_lock_bh(&rp->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1583 | |
| 1584 | /* clear all descriptors */ |
| 1585 | free_tbufs(dev); |
| 1586 | free_rbufs(dev); |
| 1587 | alloc_tbufs(dev); |
| 1588 | alloc_rbufs(dev); |
| 1589 | |
| 1590 | /* Reinitialize the hardware. */ |
| 1591 | rhine_chip_reset(dev); |
| 1592 | init_registers(dev); |
| 1593 | |
Jarek Poplawski | c0d7a02 | 2009-12-23 21:54:29 -0800 | [diff] [blame] | 1594 | spin_unlock_bh(&rp->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1595 | |
Eric Dumazet | 1ae5dc3 | 2010-05-10 05:01:31 -0700 | [diff] [blame] | 1596 | dev->trans_start = jiffies; /* prevent tx timeout */ |
Eric Dumazet | 553e233 | 2009-05-27 10:34:50 +0000 | [diff] [blame] | 1597 | dev->stats.tx_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1598 | netif_wake_queue(dev); |
Francois Romieu | 7ab87ff | 2012-01-06 21:42:26 +0100 | [diff] [blame^] | 1599 | |
| 1600 | out_unlock: |
| 1601 | mutex_unlock(&rp->task_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1602 | } |
| 1603 | |
Jarek Poplawski | c0d7a02 | 2009-12-23 21:54:29 -0800 | [diff] [blame] | 1604 | static void rhine_tx_timeout(struct net_device *dev) |
| 1605 | { |
| 1606 | struct rhine_private *rp = netdev_priv(dev); |
| 1607 | void __iomem *ioaddr = rp->base; |
| 1608 | |
Joe Perches | df4511f | 2011-04-16 14:15:25 +0000 | [diff] [blame] | 1609 | netdev_warn(dev, "Transmit timed out, status %04x, PHY status %04x, resetting...\n", |
| 1610 | ioread16(ioaddr + IntrStatus), |
| 1611 | mdio_read(dev, rp->mii_if.phy_id, MII_BMSR)); |
Jarek Poplawski | c0d7a02 | 2009-12-23 21:54:29 -0800 | [diff] [blame] | 1612 | |
| 1613 | schedule_work(&rp->reset_task); |
| 1614 | } |
| 1615 | |
Stephen Hemminger | 61357325 | 2009-08-31 19:50:58 +0000 | [diff] [blame] | 1616 | static netdev_tx_t rhine_start_tx(struct sk_buff *skb, |
| 1617 | struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1618 | { |
| 1619 | struct rhine_private *rp = netdev_priv(dev); |
| 1620 | void __iomem *ioaddr = rp->base; |
| 1621 | unsigned entry; |
| 1622 | |
| 1623 | /* Caution: the write order is important here, set the field |
| 1624 | with the "ownership" bits last. */ |
| 1625 | |
| 1626 | /* Calculate the next Tx descriptor entry. */ |
| 1627 | entry = rp->cur_tx % TX_RING_SIZE; |
| 1628 | |
Herbert Xu | 5b057c6 | 2006-06-23 02:06:41 -0700 | [diff] [blame] | 1629 | if (skb_padto(skb, ETH_ZLEN)) |
Patrick McHardy | 6ed1065 | 2009-06-23 06:03:08 +0000 | [diff] [blame] | 1630 | return NETDEV_TX_OK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1631 | |
| 1632 | rp->tx_skbuff[entry] = skb; |
| 1633 | |
| 1634 | if ((rp->quirks & rqRhineI) && |
Patrick McHardy | 84fa793 | 2006-08-29 16:44:56 -0700 | [diff] [blame] | 1635 | (((unsigned long)skb->data & 3) || skb_shinfo(skb)->nr_frags != 0 || skb->ip_summed == CHECKSUM_PARTIAL)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1636 | /* Must use alignment buffer. */ |
| 1637 | if (skb->len > PKT_BUF_SZ) { |
| 1638 | /* packet too long, drop it */ |
| 1639 | dev_kfree_skb(skb); |
| 1640 | rp->tx_skbuff[entry] = NULL; |
Eric Dumazet | 553e233 | 2009-05-27 10:34:50 +0000 | [diff] [blame] | 1641 | dev->stats.tx_dropped++; |
Patrick McHardy | 6ed1065 | 2009-06-23 06:03:08 +0000 | [diff] [blame] | 1642 | return NETDEV_TX_OK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1643 | } |
Craig Brind | 3e0d167 | 2006-04-27 02:30:46 -0700 | [diff] [blame] | 1644 | |
| 1645 | /* Padding is not copied and so must be redone. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1646 | skb_copy_and_csum_dev(skb, rp->tx_buf[entry]); |
Craig Brind | 3e0d167 | 2006-04-27 02:30:46 -0700 | [diff] [blame] | 1647 | if (skb->len < ETH_ZLEN) |
| 1648 | memset(rp->tx_buf[entry] + skb->len, 0, |
| 1649 | ETH_ZLEN - skb->len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1650 | rp->tx_skbuff_dma[entry] = 0; |
| 1651 | rp->tx_ring[entry].addr = cpu_to_le32(rp->tx_bufs_dma + |
| 1652 | (rp->tx_buf[entry] - |
| 1653 | rp->tx_bufs)); |
| 1654 | } else { |
| 1655 | rp->tx_skbuff_dma[entry] = |
| 1656 | pci_map_single(rp->pdev, skb->data, skb->len, |
| 1657 | PCI_DMA_TODEVICE); |
| 1658 | rp->tx_ring[entry].addr = cpu_to_le32(rp->tx_skbuff_dma[entry]); |
| 1659 | } |
| 1660 | |
| 1661 | rp->tx_ring[entry].desc_length = |
| 1662 | cpu_to_le32(TXDESC | (skb->len >= ETH_ZLEN ? skb->len : ETH_ZLEN)); |
| 1663 | |
Roger Luethi | 38f49e8 | 2010-12-06 00:59:40 +0000 | [diff] [blame] | 1664 | if (unlikely(vlan_tx_tag_present(skb))) { |
| 1665 | rp->tx_ring[entry].tx_status = cpu_to_le32((vlan_tx_tag_get(skb)) << 16); |
| 1666 | /* request tagging */ |
| 1667 | rp->tx_ring[entry].desc_length |= cpu_to_le32(0x020000); |
| 1668 | } |
| 1669 | else |
| 1670 | rp->tx_ring[entry].tx_status = 0; |
| 1671 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1672 | /* lock eth irq */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1673 | wmb(); |
Roger Luethi | 38f49e8 | 2010-12-06 00:59:40 +0000 | [diff] [blame] | 1674 | rp->tx_ring[entry].tx_status |= cpu_to_le32(DescOwn); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1675 | wmb(); |
| 1676 | |
| 1677 | rp->cur_tx++; |
| 1678 | |
| 1679 | /* Non-x86 Todo: explicitly flush cache lines here. */ |
| 1680 | |
Roger Luethi | 38f49e8 | 2010-12-06 00:59:40 +0000 | [diff] [blame] | 1681 | if (vlan_tx_tag_present(skb)) |
| 1682 | /* Tx queues are bits 7-0 (first Tx queue: bit 7) */ |
| 1683 | BYTE_REG_BITS_ON(1 << 7, ioaddr + TQWake); |
| 1684 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1685 | /* Wake the potentially-idle transmit channel */ |
| 1686 | iowrite8(ioread8(ioaddr + ChipCmd1) | Cmd1TxDemand, |
| 1687 | ioaddr + ChipCmd1); |
| 1688 | IOSYNC; |
| 1689 | |
| 1690 | if (rp->cur_tx == rp->dirty_tx + TX_QUEUE_LEN) |
| 1691 | netif_stop_queue(dev); |
| 1692 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1693 | if (debug > 4) { |
Joe Perches | df4511f | 2011-04-16 14:15:25 +0000 | [diff] [blame] | 1694 | netdev_dbg(dev, "Transmit frame #%d queued in slot %d\n", |
| 1695 | rp->cur_tx-1, entry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1696 | } |
Patrick McHardy | 6ed1065 | 2009-06-23 06:03:08 +0000 | [diff] [blame] | 1697 | return NETDEV_TX_OK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1698 | } |
| 1699 | |
Francois Romieu | 7ab87ff | 2012-01-06 21:42:26 +0100 | [diff] [blame^] | 1700 | static void rhine_irq_disable(struct rhine_private *rp) |
| 1701 | { |
| 1702 | iowrite16(0x0000, rp->base + IntrEnable); |
| 1703 | mmiowb(); |
| 1704 | } |
| 1705 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1706 | /* The interrupt handler does all of the Rx thread work and cleans up |
| 1707 | after the Tx thread. */ |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 1708 | static irqreturn_t rhine_interrupt(int irq, void *dev_instance) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1709 | { |
| 1710 | struct net_device *dev = dev_instance; |
| 1711 | struct rhine_private *rp = netdev_priv(dev); |
Francois Romieu | 7ab87ff | 2012-01-06 21:42:26 +0100 | [diff] [blame^] | 1712 | u32 status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1713 | int handled = 0; |
| 1714 | |
Francois Romieu | 7ab87ff | 2012-01-06 21:42:26 +0100 | [diff] [blame^] | 1715 | status = rhine_get_events(rp); |
| 1716 | |
| 1717 | if (debug > 4) |
| 1718 | netdev_dbg(dev, "Interrupt, status %08x\n", status); |
| 1719 | |
| 1720 | if (status & RHINE_EVENT) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1721 | handled = 1; |
| 1722 | |
Francois Romieu | 7ab87ff | 2012-01-06 21:42:26 +0100 | [diff] [blame^] | 1723 | rhine_irq_disable(rp); |
| 1724 | napi_schedule(&rp->napi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1725 | } |
| 1726 | |
Francois Romieu | 7ab87ff | 2012-01-06 21:42:26 +0100 | [diff] [blame^] | 1727 | if (status & ~(IntrLinkChange | IntrStatsMax | RHINE_EVENT_NAPI)) { |
| 1728 | if (debug > 1) |
| 1729 | netdev_err(dev, "Something Wicked happened! %08x\n", |
| 1730 | status); |
| 1731 | } |
| 1732 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1733 | return IRQ_RETVAL(handled); |
| 1734 | } |
| 1735 | |
| 1736 | /* This routine is logically part of the interrupt handler, but isolated |
| 1737 | for clarity. */ |
| 1738 | static void rhine_tx(struct net_device *dev) |
| 1739 | { |
| 1740 | struct rhine_private *rp = netdev_priv(dev); |
| 1741 | int txstatus = 0, entry = rp->dirty_tx % TX_RING_SIZE; |
| 1742 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1743 | /* find and cleanup dirty tx descriptors */ |
| 1744 | while (rp->dirty_tx != rp->cur_tx) { |
| 1745 | txstatus = le32_to_cpu(rp->tx_ring[entry].tx_status); |
| 1746 | if (debug > 6) |
Joe Perches | df4511f | 2011-04-16 14:15:25 +0000 | [diff] [blame] | 1747 | netdev_dbg(dev, "Tx scavenge %d status %08x\n", |
| 1748 | entry, txstatus); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1749 | if (txstatus & DescOwn) |
| 1750 | break; |
| 1751 | if (txstatus & 0x8000) { |
| 1752 | if (debug > 1) |
Joe Perches | df4511f | 2011-04-16 14:15:25 +0000 | [diff] [blame] | 1753 | netdev_dbg(dev, "Transmit error, Tx status %08x\n", |
| 1754 | txstatus); |
Eric Dumazet | 553e233 | 2009-05-27 10:34:50 +0000 | [diff] [blame] | 1755 | dev->stats.tx_errors++; |
| 1756 | if (txstatus & 0x0400) |
| 1757 | dev->stats.tx_carrier_errors++; |
| 1758 | if (txstatus & 0x0200) |
| 1759 | dev->stats.tx_window_errors++; |
| 1760 | if (txstatus & 0x0100) |
| 1761 | dev->stats.tx_aborted_errors++; |
| 1762 | if (txstatus & 0x0080) |
| 1763 | dev->stats.tx_heartbeat_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1764 | if (((rp->quirks & rqRhineI) && txstatus & 0x0002) || |
| 1765 | (txstatus & 0x0800) || (txstatus & 0x1000)) { |
Eric Dumazet | 553e233 | 2009-05-27 10:34:50 +0000 | [diff] [blame] | 1766 | dev->stats.tx_fifo_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1767 | rp->tx_ring[entry].tx_status = cpu_to_le32(DescOwn); |
| 1768 | break; /* Keep the skb - we try again */ |
| 1769 | } |
| 1770 | /* Transmitter restarted in 'abnormal' handler. */ |
| 1771 | } else { |
| 1772 | if (rp->quirks & rqRhineI) |
Eric Dumazet | 553e233 | 2009-05-27 10:34:50 +0000 | [diff] [blame] | 1773 | dev->stats.collisions += (txstatus >> 3) & 0x0F; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1774 | else |
Eric Dumazet | 553e233 | 2009-05-27 10:34:50 +0000 | [diff] [blame] | 1775 | dev->stats.collisions += txstatus & 0x0F; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1776 | if (debug > 6) |
Joe Perches | df4511f | 2011-04-16 14:15:25 +0000 | [diff] [blame] | 1777 | netdev_dbg(dev, "collisions: %1.1x:%1.1x\n", |
| 1778 | (txstatus >> 3) & 0xF, |
| 1779 | txstatus & 0xF); |
Eric Dumazet | 553e233 | 2009-05-27 10:34:50 +0000 | [diff] [blame] | 1780 | dev->stats.tx_bytes += rp->tx_skbuff[entry]->len; |
| 1781 | dev->stats.tx_packets++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1782 | } |
| 1783 | /* Free the original skb. */ |
| 1784 | if (rp->tx_skbuff_dma[entry]) { |
| 1785 | pci_unmap_single(rp->pdev, |
| 1786 | rp->tx_skbuff_dma[entry], |
| 1787 | rp->tx_skbuff[entry]->len, |
| 1788 | PCI_DMA_TODEVICE); |
| 1789 | } |
| 1790 | dev_kfree_skb_irq(rp->tx_skbuff[entry]); |
| 1791 | rp->tx_skbuff[entry] = NULL; |
| 1792 | entry = (++rp->dirty_tx) % TX_RING_SIZE; |
| 1793 | } |
| 1794 | if ((rp->cur_tx - rp->dirty_tx) < TX_QUEUE_LEN - 4) |
| 1795 | netif_wake_queue(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1796 | } |
| 1797 | |
Roger Luethi | 38f49e8 | 2010-12-06 00:59:40 +0000 | [diff] [blame] | 1798 | /** |
| 1799 | * rhine_get_vlan_tci - extract TCI from Rx data buffer |
| 1800 | * @skb: pointer to sk_buff |
| 1801 | * @data_size: used data area of the buffer including CRC |
| 1802 | * |
| 1803 | * If hardware VLAN tag extraction is enabled and the chip indicates a 802.1Q |
| 1804 | * packet, the extracted 802.1Q header (2 bytes TPID + 2 bytes TCI) is 4-byte |
| 1805 | * aligned following the CRC. |
| 1806 | */ |
| 1807 | static inline u16 rhine_get_vlan_tci(struct sk_buff *skb, int data_size) |
| 1808 | { |
| 1809 | u8 *trailer = (u8 *)skb->data + ((data_size + 3) & ~3) + 2; |
Harvey Harrison | 4562b2f | 2011-03-28 17:08:59 +0000 | [diff] [blame] | 1810 | return be16_to_cpup((__be16 *)trailer); |
Roger Luethi | 38f49e8 | 2010-12-06 00:59:40 +0000 | [diff] [blame] | 1811 | } |
| 1812 | |
Roger Luethi | 633949a | 2006-08-14 23:00:17 -0700 | [diff] [blame] | 1813 | /* Process up to limit frames from receive ring */ |
| 1814 | static int rhine_rx(struct net_device *dev, int limit) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1815 | { |
| 1816 | struct rhine_private *rp = netdev_priv(dev); |
Roger Luethi | 633949a | 2006-08-14 23:00:17 -0700 | [diff] [blame] | 1817 | int count; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1818 | int entry = rp->cur_rx % RX_RING_SIZE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1819 | |
| 1820 | if (debug > 4) { |
Joe Perches | df4511f | 2011-04-16 14:15:25 +0000 | [diff] [blame] | 1821 | netdev_dbg(dev, "%s(), entry %d status %08x\n", |
| 1822 | __func__, entry, |
| 1823 | le32_to_cpu(rp->rx_head_desc->rx_status)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1824 | } |
| 1825 | |
| 1826 | /* If EOP is set on the next entry, it's a new packet. Send it up. */ |
Roger Luethi | 633949a | 2006-08-14 23:00:17 -0700 | [diff] [blame] | 1827 | for (count = 0; count < limit; ++count) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1828 | struct rx_desc *desc = rp->rx_head_desc; |
| 1829 | u32 desc_status = le32_to_cpu(desc->rx_status); |
Roger Luethi | 38f49e8 | 2010-12-06 00:59:40 +0000 | [diff] [blame] | 1830 | u32 desc_length = le32_to_cpu(desc->desc_length); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1831 | int data_size = desc_status >> 16; |
| 1832 | |
Roger Luethi | 633949a | 2006-08-14 23:00:17 -0700 | [diff] [blame] | 1833 | if (desc_status & DescOwn) |
| 1834 | break; |
| 1835 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1836 | if (debug > 4) |
Joe Perches | df4511f | 2011-04-16 14:15:25 +0000 | [diff] [blame] | 1837 | netdev_dbg(dev, "%s() status is %08x\n", |
| 1838 | __func__, desc_status); |
Roger Luethi | 633949a | 2006-08-14 23:00:17 -0700 | [diff] [blame] | 1839 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1840 | if ((desc_status & (RxWholePkt | RxErr)) != RxWholePkt) { |
| 1841 | if ((desc_status & RxWholePkt) != RxWholePkt) { |
Joe Perches | df4511f | 2011-04-16 14:15:25 +0000 | [diff] [blame] | 1842 | netdev_warn(dev, |
| 1843 | "Oversized Ethernet frame spanned multiple buffers, " |
| 1844 | "entry %#x length %d status %08x!\n", |
| 1845 | entry, data_size, |
| 1846 | desc_status); |
| 1847 | netdev_warn(dev, |
| 1848 | "Oversized Ethernet frame %p vs %p\n", |
| 1849 | rp->rx_head_desc, |
| 1850 | &rp->rx_ring[entry]); |
Eric Dumazet | 553e233 | 2009-05-27 10:34:50 +0000 | [diff] [blame] | 1851 | dev->stats.rx_length_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1852 | } else if (desc_status & RxErr) { |
| 1853 | /* There was a error. */ |
| 1854 | if (debug > 2) |
Joe Perches | df4511f | 2011-04-16 14:15:25 +0000 | [diff] [blame] | 1855 | netdev_dbg(dev, "%s() Rx error was %08x\n", |
| 1856 | __func__, desc_status); |
Eric Dumazet | 553e233 | 2009-05-27 10:34:50 +0000 | [diff] [blame] | 1857 | dev->stats.rx_errors++; |
| 1858 | if (desc_status & 0x0030) |
| 1859 | dev->stats.rx_length_errors++; |
| 1860 | if (desc_status & 0x0048) |
| 1861 | dev->stats.rx_fifo_errors++; |
| 1862 | if (desc_status & 0x0004) |
| 1863 | dev->stats.rx_frame_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1864 | if (desc_status & 0x0002) { |
| 1865 | /* this can also be updated outside the interrupt handler */ |
| 1866 | spin_lock(&rp->lock); |
Eric Dumazet | 553e233 | 2009-05-27 10:34:50 +0000 | [diff] [blame] | 1867 | dev->stats.rx_crc_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1868 | spin_unlock(&rp->lock); |
| 1869 | } |
| 1870 | } |
| 1871 | } else { |
Eric Dumazet | 89d71a6 | 2009-10-13 05:34:20 +0000 | [diff] [blame] | 1872 | struct sk_buff *skb = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1873 | /* Length should omit the CRC */ |
| 1874 | int pkt_len = data_size - 4; |
Roger Luethi | 38f49e8 | 2010-12-06 00:59:40 +0000 | [diff] [blame] | 1875 | u16 vlan_tci = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1876 | |
| 1877 | /* Check if the packet is long enough to accept without |
| 1878 | copying to a minimally-sized skbuff. */ |
Eric Dumazet | 89d71a6 | 2009-10-13 05:34:20 +0000 | [diff] [blame] | 1879 | if (pkt_len < rx_copybreak) |
| 1880 | skb = netdev_alloc_skb_ip_align(dev, pkt_len); |
| 1881 | if (skb) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1882 | pci_dma_sync_single_for_cpu(rp->pdev, |
| 1883 | rp->rx_skbuff_dma[entry], |
| 1884 | rp->rx_buf_sz, |
| 1885 | PCI_DMA_FROMDEVICE); |
| 1886 | |
David S. Miller | 8c7b7fa | 2007-07-10 22:08:12 -0700 | [diff] [blame] | 1887 | skb_copy_to_linear_data(skb, |
David S. Miller | 689be43 | 2005-06-28 15:25:31 -0700 | [diff] [blame] | 1888 | rp->rx_skbuff[entry]->data, |
David S. Miller | 8c7b7fa | 2007-07-10 22:08:12 -0700 | [diff] [blame] | 1889 | pkt_len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1890 | skb_put(skb, pkt_len); |
| 1891 | pci_dma_sync_single_for_device(rp->pdev, |
| 1892 | rp->rx_skbuff_dma[entry], |
| 1893 | rp->rx_buf_sz, |
| 1894 | PCI_DMA_FROMDEVICE); |
| 1895 | } else { |
| 1896 | skb = rp->rx_skbuff[entry]; |
| 1897 | if (skb == NULL) { |
Joe Perches | df4511f | 2011-04-16 14:15:25 +0000 | [diff] [blame] | 1898 | netdev_err(dev, "Inconsistent Rx descriptor chain\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1899 | break; |
| 1900 | } |
| 1901 | rp->rx_skbuff[entry] = NULL; |
| 1902 | skb_put(skb, pkt_len); |
| 1903 | pci_unmap_single(rp->pdev, |
| 1904 | rp->rx_skbuff_dma[entry], |
| 1905 | rp->rx_buf_sz, |
| 1906 | PCI_DMA_FROMDEVICE); |
| 1907 | } |
Roger Luethi | 38f49e8 | 2010-12-06 00:59:40 +0000 | [diff] [blame] | 1908 | |
| 1909 | if (unlikely(desc_length & DescTag)) |
| 1910 | vlan_tci = rhine_get_vlan_tci(skb, data_size); |
| 1911 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1912 | skb->protocol = eth_type_trans(skb, dev); |
Roger Luethi | 38f49e8 | 2010-12-06 00:59:40 +0000 | [diff] [blame] | 1913 | |
| 1914 | if (unlikely(desc_length & DescTag)) |
| 1915 | __vlan_hwaccel_put_tag(skb, vlan_tci); |
Roger Luethi | 633949a | 2006-08-14 23:00:17 -0700 | [diff] [blame] | 1916 | netif_receive_skb(skb); |
Eric Dumazet | 553e233 | 2009-05-27 10:34:50 +0000 | [diff] [blame] | 1917 | dev->stats.rx_bytes += pkt_len; |
| 1918 | dev->stats.rx_packets++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1919 | } |
| 1920 | entry = (++rp->cur_rx) % RX_RING_SIZE; |
| 1921 | rp->rx_head_desc = &rp->rx_ring[entry]; |
| 1922 | } |
| 1923 | |
| 1924 | /* Refill the Rx ring buffers. */ |
| 1925 | for (; rp->cur_rx - rp->dirty_rx > 0; rp->dirty_rx++) { |
| 1926 | struct sk_buff *skb; |
| 1927 | entry = rp->dirty_rx % RX_RING_SIZE; |
| 1928 | if (rp->rx_skbuff[entry] == NULL) { |
Kevin Lo | b26b555 | 2008-08-27 11:35:09 +0800 | [diff] [blame] | 1929 | skb = netdev_alloc_skb(dev, rp->rx_buf_sz); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1930 | rp->rx_skbuff[entry] = skb; |
| 1931 | if (skb == NULL) |
| 1932 | break; /* Better luck next round. */ |
| 1933 | skb->dev = dev; /* Mark as being used by this device. */ |
| 1934 | rp->rx_skbuff_dma[entry] = |
David S. Miller | 689be43 | 2005-06-28 15:25:31 -0700 | [diff] [blame] | 1935 | pci_map_single(rp->pdev, skb->data, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1936 | rp->rx_buf_sz, |
| 1937 | PCI_DMA_FROMDEVICE); |
| 1938 | rp->rx_ring[entry].addr = cpu_to_le32(rp->rx_skbuff_dma[entry]); |
| 1939 | } |
| 1940 | rp->rx_ring[entry].rx_status = cpu_to_le32(DescOwn); |
| 1941 | } |
Roger Luethi | 633949a | 2006-08-14 23:00:17 -0700 | [diff] [blame] | 1942 | |
| 1943 | return count; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1944 | } |
| 1945 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1946 | static void rhine_restart_tx(struct net_device *dev) { |
| 1947 | struct rhine_private *rp = netdev_priv(dev); |
| 1948 | void __iomem *ioaddr = rp->base; |
| 1949 | int entry = rp->dirty_tx % TX_RING_SIZE; |
| 1950 | u32 intr_status; |
| 1951 | |
| 1952 | /* |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 1953 | * If new errors occurred, we need to sort them out before doing Tx. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1954 | * In that case the ISR will be back here RSN anyway. |
| 1955 | */ |
Francois Romieu | a20a28b | 2011-12-30 14:53:58 +0100 | [diff] [blame] | 1956 | intr_status = rhine_get_events(rp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1957 | |
| 1958 | if ((intr_status & IntrTxErrSummary) == 0) { |
| 1959 | |
| 1960 | /* We know better than the chip where it should continue. */ |
| 1961 | iowrite32(rp->tx_ring_dma + entry * sizeof(struct tx_desc), |
| 1962 | ioaddr + TxRingPtr); |
| 1963 | |
| 1964 | iowrite8(ioread8(ioaddr + ChipCmd) | CmdTxOn, |
| 1965 | ioaddr + ChipCmd); |
Roger Luethi | 38f49e8 | 2010-12-06 00:59:40 +0000 | [diff] [blame] | 1966 | |
| 1967 | if (rp->tx_ring[entry].desc_length & cpu_to_le32(0x020000)) |
| 1968 | /* Tx queues are bits 7-0 (first Tx queue: bit 7) */ |
| 1969 | BYTE_REG_BITS_ON(1 << 7, ioaddr + TQWake); |
| 1970 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1971 | iowrite8(ioread8(ioaddr + ChipCmd1) | Cmd1TxDemand, |
| 1972 | ioaddr + ChipCmd1); |
| 1973 | IOSYNC; |
| 1974 | } |
| 1975 | else { |
| 1976 | /* This should never happen */ |
| 1977 | if (debug > 1) |
Joe Perches | df4511f | 2011-04-16 14:15:25 +0000 | [diff] [blame] | 1978 | netdev_warn(dev, "%s() Another error occurred %08x\n", |
| 1979 | __func__, intr_status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1980 | } |
| 1981 | |
| 1982 | } |
| 1983 | |
Francois Romieu | 7ab87ff | 2012-01-06 21:42:26 +0100 | [diff] [blame^] | 1984 | static void rhine_slow_event_task(struct work_struct *work) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1985 | { |
Francois Romieu | 7ab87ff | 2012-01-06 21:42:26 +0100 | [diff] [blame^] | 1986 | struct rhine_private *rp = |
| 1987 | container_of(work, struct rhine_private, slow_event_task); |
| 1988 | struct net_device *dev = rp->dev; |
| 1989 | u32 intr_status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1990 | |
Francois Romieu | 7ab87ff | 2012-01-06 21:42:26 +0100 | [diff] [blame^] | 1991 | mutex_lock(&rp->task_lock); |
| 1992 | |
| 1993 | if (!rp->task_enable) |
| 1994 | goto out_unlock; |
| 1995 | |
| 1996 | intr_status = rhine_get_events(rp); |
| 1997 | rhine_ack_events(rp, intr_status & RHINE_EVENT_SLOW); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1998 | |
| 1999 | if (intr_status & IntrLinkChange) |
John W. Linville | 38bb6b2 | 2006-05-19 10:51:21 -0400 | [diff] [blame] | 2000 | rhine_check_media(dev, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2001 | |
Francois Romieu | 7ab87ff | 2012-01-06 21:42:26 +0100 | [diff] [blame^] | 2002 | napi_disable(&rp->napi); |
| 2003 | rhine_irq_disable(rp); |
| 2004 | /* Slow and safe. Consider __napi_schedule as a replacement ? */ |
| 2005 | napi_enable(&rp->napi); |
| 2006 | napi_schedule(&rp->napi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2007 | |
Francois Romieu | 7ab87ff | 2012-01-06 21:42:26 +0100 | [diff] [blame^] | 2008 | out_unlock: |
| 2009 | mutex_unlock(&rp->task_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2010 | } |
| 2011 | |
| 2012 | static struct net_device_stats *rhine_get_stats(struct net_device *dev) |
| 2013 | { |
| 2014 | struct rhine_private *rp = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2015 | |
Francois Romieu | 7ab87ff | 2012-01-06 21:42:26 +0100 | [diff] [blame^] | 2016 | spin_lock_bh(&rp->lock); |
| 2017 | rhine_update_rx_crc_and_missed_errord(rp); |
| 2018 | spin_unlock_bh(&rp->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2019 | |
Eric Dumazet | 553e233 | 2009-05-27 10:34:50 +0000 | [diff] [blame] | 2020 | return &dev->stats; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2021 | } |
| 2022 | |
| 2023 | static void rhine_set_rx_mode(struct net_device *dev) |
| 2024 | { |
| 2025 | struct rhine_private *rp = netdev_priv(dev); |
| 2026 | void __iomem *ioaddr = rp->base; |
| 2027 | u32 mc_filter[2]; /* Multicast hash filter */ |
Roger Luethi | 38f49e8 | 2010-12-06 00:59:40 +0000 | [diff] [blame] | 2028 | u8 rx_mode = 0x0C; /* Note: 0x02=accept runt, 0x01=accept errs */ |
| 2029 | struct netdev_hw_addr *ha; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2030 | |
| 2031 | if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2032 | rx_mode = 0x1C; |
| 2033 | iowrite32(0xffffffff, ioaddr + MulticastFilter0); |
| 2034 | iowrite32(0xffffffff, ioaddr + MulticastFilter1); |
Jiri Pirko | 4cd24ea | 2010-02-08 04:30:35 +0000 | [diff] [blame] | 2035 | } else if ((netdev_mc_count(dev) > multicast_filter_limit) || |
Joe Perches | 8e95a20 | 2009-12-03 07:58:21 +0000 | [diff] [blame] | 2036 | (dev->flags & IFF_ALLMULTI)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2037 | /* Too many to match, or accept all multicasts. */ |
| 2038 | iowrite32(0xffffffff, ioaddr + MulticastFilter0); |
| 2039 | iowrite32(0xffffffff, ioaddr + MulticastFilter1); |
Roger Luethi | 38f49e8 | 2010-12-06 00:59:40 +0000 | [diff] [blame] | 2040 | } else if (rp->pdev->revision >= VT6105M) { |
| 2041 | int i = 0; |
| 2042 | u32 mCAMmask = 0; /* 32 mCAMs (6105M and better) */ |
| 2043 | netdev_for_each_mc_addr(ha, dev) { |
| 2044 | if (i == MCAM_SIZE) |
| 2045 | break; |
| 2046 | rhine_set_cam(ioaddr, i, ha->addr); |
| 2047 | mCAMmask |= 1 << i; |
| 2048 | i++; |
| 2049 | } |
| 2050 | rhine_set_cam_mask(ioaddr, mCAMmask); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2051 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2052 | memset(mc_filter, 0, sizeof(mc_filter)); |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 2053 | netdev_for_each_mc_addr(ha, dev) { |
| 2054 | int bit_nr = ether_crc(ETH_ALEN, ha->addr) >> 26; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2055 | |
| 2056 | mc_filter[bit_nr >> 5] |= 1 << (bit_nr & 31); |
| 2057 | } |
| 2058 | iowrite32(mc_filter[0], ioaddr + MulticastFilter0); |
| 2059 | iowrite32(mc_filter[1], ioaddr + MulticastFilter1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2060 | } |
Roger Luethi | 38f49e8 | 2010-12-06 00:59:40 +0000 | [diff] [blame] | 2061 | /* enable/disable VLAN receive filtering */ |
| 2062 | if (rp->pdev->revision >= VT6105M) { |
| 2063 | if (dev->flags & IFF_PROMISC) |
| 2064 | BYTE_REG_BITS_OFF(BCR1_VIDFR, ioaddr + PCIBusConfig1); |
| 2065 | else |
| 2066 | BYTE_REG_BITS_ON(BCR1_VIDFR, ioaddr + PCIBusConfig1); |
| 2067 | } |
| 2068 | BYTE_REG_BITS_ON(rx_mode, ioaddr + RxConfig); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2069 | } |
| 2070 | |
| 2071 | static void netdev_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info) |
| 2072 | { |
| 2073 | struct rhine_private *rp = netdev_priv(dev); |
| 2074 | |
Rick Jones | 23020ab | 2011-11-09 09:58:07 +0000 | [diff] [blame] | 2075 | strlcpy(info->driver, DRV_NAME, sizeof(info->driver)); |
| 2076 | strlcpy(info->version, DRV_VERSION, sizeof(info->version)); |
| 2077 | strlcpy(info->bus_info, pci_name(rp->pdev), sizeof(info->bus_info)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2078 | } |
| 2079 | |
| 2080 | static int netdev_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) |
| 2081 | { |
| 2082 | struct rhine_private *rp = netdev_priv(dev); |
| 2083 | int rc; |
| 2084 | |
Francois Romieu | 7ab87ff | 2012-01-06 21:42:26 +0100 | [diff] [blame^] | 2085 | mutex_lock(&rp->task_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2086 | rc = mii_ethtool_gset(&rp->mii_if, cmd); |
Francois Romieu | 7ab87ff | 2012-01-06 21:42:26 +0100 | [diff] [blame^] | 2087 | mutex_unlock(&rp->task_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2088 | |
| 2089 | return rc; |
| 2090 | } |
| 2091 | |
| 2092 | static int netdev_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) |
| 2093 | { |
| 2094 | struct rhine_private *rp = netdev_priv(dev); |
| 2095 | int rc; |
| 2096 | |
Francois Romieu | 7ab87ff | 2012-01-06 21:42:26 +0100 | [diff] [blame^] | 2097 | mutex_lock(&rp->task_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2098 | rc = mii_ethtool_sset(&rp->mii_if, cmd); |
Roger Luethi | 00b428c | 2006-03-28 20:53:56 +0200 | [diff] [blame] | 2099 | rhine_set_carrier(&rp->mii_if); |
Francois Romieu | 7ab87ff | 2012-01-06 21:42:26 +0100 | [diff] [blame^] | 2100 | mutex_unlock(&rp->task_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2101 | |
| 2102 | return rc; |
| 2103 | } |
| 2104 | |
| 2105 | static int netdev_nway_reset(struct net_device *dev) |
| 2106 | { |
| 2107 | struct rhine_private *rp = netdev_priv(dev); |
| 2108 | |
| 2109 | return mii_nway_restart(&rp->mii_if); |
| 2110 | } |
| 2111 | |
| 2112 | static u32 netdev_get_link(struct net_device *dev) |
| 2113 | { |
| 2114 | struct rhine_private *rp = netdev_priv(dev); |
| 2115 | |
| 2116 | return mii_link_ok(&rp->mii_if); |
| 2117 | } |
| 2118 | |
| 2119 | static u32 netdev_get_msglevel(struct net_device *dev) |
| 2120 | { |
| 2121 | return debug; |
| 2122 | } |
| 2123 | |
| 2124 | static void netdev_set_msglevel(struct net_device *dev, u32 value) |
| 2125 | { |
| 2126 | debug = value; |
| 2127 | } |
| 2128 | |
| 2129 | static void rhine_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol) |
| 2130 | { |
| 2131 | struct rhine_private *rp = netdev_priv(dev); |
| 2132 | |
| 2133 | if (!(rp->quirks & rqWOL)) |
| 2134 | return; |
| 2135 | |
| 2136 | spin_lock_irq(&rp->lock); |
| 2137 | wol->supported = WAKE_PHY | WAKE_MAGIC | |
| 2138 | WAKE_UCAST | WAKE_MCAST | WAKE_BCAST; /* Untested */ |
| 2139 | wol->wolopts = rp->wolopts; |
| 2140 | spin_unlock_irq(&rp->lock); |
| 2141 | } |
| 2142 | |
| 2143 | static int rhine_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol) |
| 2144 | { |
| 2145 | struct rhine_private *rp = netdev_priv(dev); |
| 2146 | u32 support = WAKE_PHY | WAKE_MAGIC | |
| 2147 | WAKE_UCAST | WAKE_MCAST | WAKE_BCAST; /* Untested */ |
| 2148 | |
| 2149 | if (!(rp->quirks & rqWOL)) |
| 2150 | return -EINVAL; |
| 2151 | |
| 2152 | if (wol->wolopts & ~support) |
| 2153 | return -EINVAL; |
| 2154 | |
| 2155 | spin_lock_irq(&rp->lock); |
| 2156 | rp->wolopts = wol->wolopts; |
| 2157 | spin_unlock_irq(&rp->lock); |
| 2158 | |
| 2159 | return 0; |
| 2160 | } |
| 2161 | |
Jeff Garzik | 7282d49 | 2006-09-13 14:30:00 -0400 | [diff] [blame] | 2162 | static const struct ethtool_ops netdev_ethtool_ops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2163 | .get_drvinfo = netdev_get_drvinfo, |
| 2164 | .get_settings = netdev_get_settings, |
| 2165 | .set_settings = netdev_set_settings, |
| 2166 | .nway_reset = netdev_nway_reset, |
| 2167 | .get_link = netdev_get_link, |
| 2168 | .get_msglevel = netdev_get_msglevel, |
| 2169 | .set_msglevel = netdev_set_msglevel, |
| 2170 | .get_wol = rhine_get_wol, |
| 2171 | .set_wol = rhine_set_wol, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2172 | }; |
| 2173 | |
| 2174 | static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) |
| 2175 | { |
| 2176 | struct rhine_private *rp = netdev_priv(dev); |
| 2177 | int rc; |
| 2178 | |
| 2179 | if (!netif_running(dev)) |
| 2180 | return -EINVAL; |
| 2181 | |
Francois Romieu | 7ab87ff | 2012-01-06 21:42:26 +0100 | [diff] [blame^] | 2182 | mutex_lock(&rp->task_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2183 | rc = generic_mii_ioctl(&rp->mii_if, if_mii(rq), cmd, NULL); |
Roger Luethi | 00b428c | 2006-03-28 20:53:56 +0200 | [diff] [blame] | 2184 | rhine_set_carrier(&rp->mii_if); |
Francois Romieu | 7ab87ff | 2012-01-06 21:42:26 +0100 | [diff] [blame^] | 2185 | mutex_unlock(&rp->task_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2186 | |
| 2187 | return rc; |
| 2188 | } |
| 2189 | |
| 2190 | static int rhine_close(struct net_device *dev) |
| 2191 | { |
| 2192 | struct rhine_private *rp = netdev_priv(dev); |
| 2193 | void __iomem *ioaddr = rp->base; |
| 2194 | |
Francois Romieu | 7ab87ff | 2012-01-06 21:42:26 +0100 | [diff] [blame^] | 2195 | rhine_task_disable(rp); |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 2196 | napi_disable(&rp->napi); |
Jarek Poplawski | c0d7a02 | 2009-12-23 21:54:29 -0800 | [diff] [blame] | 2197 | netif_stop_queue(dev); |
| 2198 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2199 | if (debug > 1) |
Joe Perches | df4511f | 2011-04-16 14:15:25 +0000 | [diff] [blame] | 2200 | netdev_dbg(dev, "Shutting down ethercard, status was %04x\n", |
| 2201 | ioread16(ioaddr + ChipCmd)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2202 | |
| 2203 | /* Switch to loopback mode to avoid hardware races. */ |
| 2204 | iowrite8(rp->tx_thresh | 0x02, ioaddr + TxConfig); |
| 2205 | |
Francois Romieu | 7ab87ff | 2012-01-06 21:42:26 +0100 | [diff] [blame^] | 2206 | rhine_irq_disable(rp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2207 | |
| 2208 | /* Stop the chip's Tx and Rx processes. */ |
| 2209 | iowrite16(CmdStop, ioaddr + ChipCmd); |
| 2210 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2211 | free_irq(rp->pdev->irq, dev); |
| 2212 | free_rbufs(dev); |
| 2213 | free_tbufs(dev); |
| 2214 | free_ring(dev); |
| 2215 | |
| 2216 | return 0; |
| 2217 | } |
| 2218 | |
| 2219 | |
| 2220 | static void __devexit rhine_remove_one(struct pci_dev *pdev) |
| 2221 | { |
| 2222 | struct net_device *dev = pci_get_drvdata(pdev); |
| 2223 | struct rhine_private *rp = netdev_priv(dev); |
| 2224 | |
| 2225 | unregister_netdev(dev); |
| 2226 | |
| 2227 | pci_iounmap(pdev, rp->base); |
| 2228 | pci_release_regions(pdev); |
| 2229 | |
| 2230 | free_netdev(dev); |
| 2231 | pci_disable_device(pdev); |
| 2232 | pci_set_drvdata(pdev, NULL); |
| 2233 | } |
| 2234 | |
Greg Kroah-Hartman | d18c3db | 2005-06-23 17:35:56 -0700 | [diff] [blame] | 2235 | static void rhine_shutdown (struct pci_dev *pdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2236 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2237 | struct net_device *dev = pci_get_drvdata(pdev); |
| 2238 | struct rhine_private *rp = netdev_priv(dev); |
| 2239 | void __iomem *ioaddr = rp->base; |
| 2240 | |
| 2241 | if (!(rp->quirks & rqWOL)) |
| 2242 | return; /* Nothing to do for non-WOL adapters */ |
| 2243 | |
| 2244 | rhine_power_init(dev); |
| 2245 | |
| 2246 | /* Make sure we use pattern 0, 1 and not 4, 5 */ |
| 2247 | if (rp->quirks & rq6patterns) |
Laura Garcia | f11cf25 | 2008-02-23 18:56:35 +0100 | [diff] [blame] | 2248 | iowrite8(0x04, ioaddr + WOLcgClr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2249 | |
Francois Romieu | 7ab87ff | 2012-01-06 21:42:26 +0100 | [diff] [blame^] | 2250 | spin_lock(&rp->lock); |
| 2251 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2252 | if (rp->wolopts & WAKE_MAGIC) { |
| 2253 | iowrite8(WOLmagic, ioaddr + WOLcrSet); |
| 2254 | /* |
| 2255 | * Turn EEPROM-controlled wake-up back on -- some hardware may |
| 2256 | * not cooperate otherwise. |
| 2257 | */ |
| 2258 | iowrite8(ioread8(ioaddr + ConfigA) | 0x03, ioaddr + ConfigA); |
| 2259 | } |
| 2260 | |
| 2261 | if (rp->wolopts & (WAKE_BCAST|WAKE_MCAST)) |
| 2262 | iowrite8(WOLbmcast, ioaddr + WOLcgSet); |
| 2263 | |
| 2264 | if (rp->wolopts & WAKE_PHY) |
| 2265 | iowrite8(WOLlnkon | WOLlnkoff, ioaddr + WOLcrSet); |
| 2266 | |
| 2267 | if (rp->wolopts & WAKE_UCAST) |
| 2268 | iowrite8(WOLucast, ioaddr + WOLcrSet); |
| 2269 | |
| 2270 | if (rp->wolopts) { |
| 2271 | /* Enable legacy WOL (for old motherboards) */ |
| 2272 | iowrite8(0x01, ioaddr + PwcfgSet); |
| 2273 | iowrite8(ioread8(ioaddr + StickyHW) | 0x04, ioaddr + StickyHW); |
| 2274 | } |
| 2275 | |
Francois Romieu | 7ab87ff | 2012-01-06 21:42:26 +0100 | [diff] [blame^] | 2276 | spin_unlock(&rp->lock); |
| 2277 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2278 | /* Hit power state D3 (sleep) */ |
Roger Luethi | b933b4d | 2006-08-14 23:00:21 -0700 | [diff] [blame] | 2279 | if (!avoid_D3) |
| 2280 | iowrite8(ioread8(ioaddr + StickyHW) | 0x03, ioaddr + StickyHW); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2281 | |
| 2282 | /* TODO: Check use of pci_enable_wake() */ |
| 2283 | |
| 2284 | } |
| 2285 | |
| 2286 | #ifdef CONFIG_PM |
| 2287 | static int rhine_suspend(struct pci_dev *pdev, pm_message_t state) |
| 2288 | { |
| 2289 | struct net_device *dev = pci_get_drvdata(pdev); |
| 2290 | struct rhine_private *rp = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2291 | |
| 2292 | if (!netif_running(dev)) |
| 2293 | return 0; |
| 2294 | |
Francois Romieu | 7ab87ff | 2012-01-06 21:42:26 +0100 | [diff] [blame^] | 2295 | rhine_task_disable(rp); |
| 2296 | rhine_irq_disable(rp); |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 2297 | napi_disable(&rp->napi); |
Francois Romieu | 32b0f53 | 2008-07-11 00:30:14 +0200 | [diff] [blame] | 2298 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2299 | netif_device_detach(dev); |
| 2300 | pci_save_state(pdev); |
| 2301 | |
Greg Kroah-Hartman | d18c3db | 2005-06-23 17:35:56 -0700 | [diff] [blame] | 2302 | rhine_shutdown(pdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2303 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2304 | return 0; |
| 2305 | } |
| 2306 | |
| 2307 | static int rhine_resume(struct pci_dev *pdev) |
| 2308 | { |
| 2309 | struct net_device *dev = pci_get_drvdata(pdev); |
| 2310 | struct rhine_private *rp = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2311 | int ret; |
| 2312 | |
| 2313 | if (!netif_running(dev)) |
| 2314 | return 0; |
| 2315 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2316 | ret = pci_set_power_state(pdev, PCI_D0); |
| 2317 | if (debug > 1) |
Joe Perches | df4511f | 2011-04-16 14:15:25 +0000 | [diff] [blame] | 2318 | netdev_info(dev, "Entering power state D0 %s (%d)\n", |
| 2319 | ret ? "failed" : "succeeded", ret); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2320 | |
| 2321 | pci_restore_state(pdev); |
| 2322 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2323 | #ifdef USE_MMIO |
| 2324 | enable_mmio(rp->pioaddr, rp->quirks); |
| 2325 | #endif |
| 2326 | rhine_power_init(dev); |
| 2327 | free_tbufs(dev); |
| 2328 | free_rbufs(dev); |
| 2329 | alloc_tbufs(dev); |
| 2330 | alloc_rbufs(dev); |
Francois Romieu | 7ab87ff | 2012-01-06 21:42:26 +0100 | [diff] [blame^] | 2331 | rhine_task_enable(rp); |
| 2332 | spin_lock_bh(&rp->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2333 | init_registers(dev); |
Francois Romieu | 7ab87ff | 2012-01-06 21:42:26 +0100 | [diff] [blame^] | 2334 | spin_unlock_bh(&rp->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2335 | |
| 2336 | netif_device_attach(dev); |
| 2337 | |
| 2338 | return 0; |
| 2339 | } |
| 2340 | #endif /* CONFIG_PM */ |
| 2341 | |
| 2342 | static struct pci_driver rhine_driver = { |
| 2343 | .name = DRV_NAME, |
| 2344 | .id_table = rhine_pci_tbl, |
| 2345 | .probe = rhine_init_one, |
| 2346 | .remove = __devexit_p(rhine_remove_one), |
| 2347 | #ifdef CONFIG_PM |
| 2348 | .suspend = rhine_suspend, |
| 2349 | .resume = rhine_resume, |
| 2350 | #endif /* CONFIG_PM */ |
Greg Kroah-Hartman | d18c3db | 2005-06-23 17:35:56 -0700 | [diff] [blame] | 2351 | .shutdown = rhine_shutdown, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2352 | }; |
| 2353 | |
Roger Luethi | e84df48 | 2007-03-06 19:57:37 +0100 | [diff] [blame] | 2354 | static struct dmi_system_id __initdata rhine_dmi_table[] = { |
| 2355 | { |
| 2356 | .ident = "EPIA-M", |
| 2357 | .matches = { |
| 2358 | DMI_MATCH(DMI_BIOS_VENDOR, "Award Software International, Inc."), |
| 2359 | DMI_MATCH(DMI_BIOS_VERSION, "6.00 PG"), |
| 2360 | }, |
| 2361 | }, |
| 2362 | { |
| 2363 | .ident = "KV7", |
| 2364 | .matches = { |
| 2365 | DMI_MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies, LTD"), |
| 2366 | DMI_MATCH(DMI_BIOS_VERSION, "6.00 PG"), |
| 2367 | }, |
| 2368 | }, |
| 2369 | { NULL } |
| 2370 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2371 | |
| 2372 | static int __init rhine_init(void) |
| 2373 | { |
| 2374 | /* when a module, this is printed whether or not devices are found in probe */ |
| 2375 | #ifdef MODULE |
Joe Perches | df4511f | 2011-04-16 14:15:25 +0000 | [diff] [blame] | 2376 | pr_info("%s\n", version); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2377 | #endif |
Roger Luethi | e84df48 | 2007-03-06 19:57:37 +0100 | [diff] [blame] | 2378 | if (dmi_check_system(rhine_dmi_table)) { |
| 2379 | /* these BIOSes fail at PXE boot if chip is in D3 */ |
Rusty Russell | eb93992 | 2011-12-19 14:08:01 +0000 | [diff] [blame] | 2380 | avoid_D3 = true; |
Joe Perches | df4511f | 2011-04-16 14:15:25 +0000 | [diff] [blame] | 2381 | pr_warn("Broken BIOS detected, avoid_D3 enabled\n"); |
Roger Luethi | e84df48 | 2007-03-06 19:57:37 +0100 | [diff] [blame] | 2382 | } |
| 2383 | else if (avoid_D3) |
Joe Perches | df4511f | 2011-04-16 14:15:25 +0000 | [diff] [blame] | 2384 | pr_info("avoid_D3 set\n"); |
Roger Luethi | e84df48 | 2007-03-06 19:57:37 +0100 | [diff] [blame] | 2385 | |
Jeff Garzik | 2991762 | 2006-08-19 17:48:59 -0400 | [diff] [blame] | 2386 | return pci_register_driver(&rhine_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2387 | } |
| 2388 | |
| 2389 | |
| 2390 | static void __exit rhine_cleanup(void) |
| 2391 | { |
| 2392 | pci_unregister_driver(&rhine_driver); |
| 2393 | } |
| 2394 | |
| 2395 | |
| 2396 | module_init(rhine_init); |
| 2397 | module_exit(rhine_cleanup); |