Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* starfire.c: Linux device driver for the Adaptec Starfire network adapter. */ |
| 2 | /* |
| 3 | Written 1998-2000 by Donald Becker. |
| 4 | |
Jeff Garzik | fdecea6 | 2005-05-12 20:16:24 -0400 | [diff] [blame] | 5 | Current maintainer is Ion Badulescu <ionut ta badula tod org>. Please |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6 | send all bug reports to me, and not to Donald Becker, as this code |
| 7 | has been heavily modified from Donald's original version. |
| 8 | |
| 9 | This software may be used and distributed according to the terms of |
| 10 | the GNU General Public License (GPL), incorporated herein by reference. |
| 11 | Drivers based on or derived from this code fall under the GPL and must |
| 12 | retain the authorship, copyright and license notice. This file is not |
| 13 | a complete program and may only be used when the entire operating |
| 14 | system is licensed under the GPL. |
| 15 | |
| 16 | The information below comes from Donald Becker's original driver: |
| 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 | Support and updates available at |
| 24 | http://www.scyld.com/network/starfire.html |
Jeff Garzik | 03a8c66 | 2006-06-27 07:57:22 -0400 | [diff] [blame] | 25 | [link no longer provides useful info -jgarzik] |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 26 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 27 | */ |
| 28 | |
| 29 | #define DRV_NAME "starfire" |
Jeff Garzik | 03a8c66 | 2006-06-27 07:57:22 -0400 | [diff] [blame] | 30 | #define DRV_VERSION "2.0" |
| 31 | #define DRV_RELDATE "June 27, 2006" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 32 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | #include <linux/module.h> |
| 34 | #include <linux/kernel.h> |
| 35 | #include <linux/pci.h> |
| 36 | #include <linux/netdevice.h> |
| 37 | #include <linux/etherdevice.h> |
| 38 | #include <linux/init.h> |
| 39 | #include <linux/delay.h> |
Jeff Garzik | fdecea6 | 2005-05-12 20:16:24 -0400 | [diff] [blame] | 40 | #include <linux/crc32.h> |
| 41 | #include <linux/ethtool.h> |
| 42 | #include <linux/mii.h> |
| 43 | #include <linux/if_vlan.h> |
Al Viro | d7fe0f2 | 2006-12-03 23:15:30 -0500 | [diff] [blame] | 44 | #include <linux/mm.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | #include <asm/processor.h> /* Processor type for cache alignment. */ |
| 46 | #include <asm/uaccess.h> |
| 47 | #include <asm/io.h> |
| 48 | |
Jeff Garzik | fdecea6 | 2005-05-12 20:16:24 -0400 | [diff] [blame] | 49 | #include "starfire_firmware.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 50 | /* |
| 51 | * The current frame processor firmware fails to checksum a fragment |
| 52 | * of length 1. If and when this is fixed, the #define below can be removed. |
| 53 | */ |
| 54 | #define HAS_BROKEN_FIRMWARE |
Ion Badulescu | 6797423 | 2005-10-03 22:31:36 -0400 | [diff] [blame] | 55 | |
| 56 | /* |
| 57 | * If using the broken firmware, data must be padded to the next 32-bit boundary. |
| 58 | */ |
| 59 | #ifdef HAS_BROKEN_FIRMWARE |
| 60 | #define PADDING_MASK 3 |
| 61 | #endif |
| 62 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 63 | /* |
| 64 | * Define this if using the driver with the zero-copy patch |
| 65 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 66 | #define ZEROCOPY |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 67 | |
| 68 | #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE) |
| 69 | #define VLAN_SUPPORT |
| 70 | #endif |
| 71 | |
| 72 | #ifndef CONFIG_ADAPTEC_STARFIRE_NAPI |
| 73 | #undef HAVE_NETDEV_POLL |
| 74 | #endif |
| 75 | |
| 76 | /* The user-configurable values. |
| 77 | These may be modified when a driver module is loaded.*/ |
| 78 | |
| 79 | /* Used for tuning interrupt latency vs. overhead. */ |
| 80 | static int intr_latency; |
| 81 | static int small_frames; |
| 82 | |
| 83 | static int debug = 1; /* 1 normal messages, 0 quiet .. 7 verbose. */ |
| 84 | static int max_interrupt_work = 20; |
| 85 | static int mtu; |
| 86 | /* Maximum number of multicast addresses to filter (vs. rx-all-multicast). |
| 87 | The Starfire has a 512 element hash table based on the Ethernet CRC. */ |
Arjan van de Ven | f71e130 | 2006-03-03 21:33:57 -0500 | [diff] [blame] | 88 | static const int multicast_filter_limit = 512; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 89 | /* Whether to do TCP/UDP checksums in hardware */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 90 | static int enable_hw_cksum = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 91 | |
| 92 | #define PKT_BUF_SZ 1536 /* Size of each temporary Rx buffer.*/ |
| 93 | /* |
| 94 | * Set the copy breakpoint for the copy-only-tiny-frames scheme. |
| 95 | * Setting to > 1518 effectively disables this feature. |
| 96 | * |
| 97 | * NOTE: |
| 98 | * The ia64 doesn't allow for unaligned loads even of integers being |
| 99 | * misaligned on a 2 byte boundary. Thus always force copying of |
| 100 | * packets as the starfire doesn't allow for misaligned DMAs ;-( |
| 101 | * 23/10/2000 - Jes |
| 102 | * |
| 103 | * The Alpha and the Sparc don't like unaligned loads, either. On Sparc64, |
| 104 | * at least, having unaligned frames leads to a rather serious performance |
| 105 | * penalty. -Ion |
| 106 | */ |
| 107 | #if defined(__ia64__) || defined(__alpha__) || defined(__sparc__) |
| 108 | static int rx_copybreak = PKT_BUF_SZ; |
| 109 | #else |
| 110 | static int rx_copybreak /* = 0 */; |
| 111 | #endif |
| 112 | |
| 113 | /* PCI DMA burst size -- on sparc64 we want to force it to 64 bytes, on the others the default of 128 is fine. */ |
| 114 | #ifdef __sparc__ |
| 115 | #define DMA_BURST_SIZE 64 |
| 116 | #else |
| 117 | #define DMA_BURST_SIZE 128 |
| 118 | #endif |
| 119 | |
| 120 | /* Used to pass the media type, etc. |
| 121 | Both 'options[]' and 'full_duplex[]' exist for driver interoperability. |
| 122 | The media type is usually passed in 'options[]'. |
| 123 | These variables are deprecated, use ethtool instead. -Ion |
| 124 | */ |
| 125 | #define MAX_UNITS 8 /* More are supported, limit only on options */ |
| 126 | static int options[MAX_UNITS] = {0, }; |
| 127 | static int full_duplex[MAX_UNITS] = {0, }; |
| 128 | |
| 129 | /* Operational parameters that are set at compile time. */ |
| 130 | |
| 131 | /* The "native" ring sizes are either 256 or 2048. |
| 132 | However in some modes a descriptor may be marked to wrap the ring earlier. |
| 133 | */ |
| 134 | #define RX_RING_SIZE 256 |
| 135 | #define TX_RING_SIZE 32 |
| 136 | /* The completion queues are fixed at 1024 entries i.e. 4K or 8KB. */ |
| 137 | #define DONE_Q_SIZE 1024 |
| 138 | /* All queues must be aligned on a 256-byte boundary */ |
| 139 | #define QUEUE_ALIGN 256 |
| 140 | |
| 141 | #if RX_RING_SIZE > 256 |
| 142 | #define RX_Q_ENTRIES Rx2048QEntries |
| 143 | #else |
| 144 | #define RX_Q_ENTRIES Rx256QEntries |
| 145 | #endif |
| 146 | |
| 147 | /* Operational parameters that usually are not changed. */ |
| 148 | /* Time in jiffies before concluding the transmitter is hung. */ |
| 149 | #define TX_TIMEOUT (2 * HZ) |
| 150 | |
| 151 | /* |
| 152 | * This SUCKS. |
| 153 | * We need a much better method to determine if dma_addr_t is 64-bit. |
| 154 | */ |
maximilian attems | 983b7dc | 2007-06-24 23:36:45 +0200 | [diff] [blame] | 155 | #if (defined(__i386__) && defined(CONFIG_HIGHMEM64G)) || defined(__x86_64__) || defined (__ia64__) || defined(__alpha__) || defined(__mips64__) || (defined(__mips__) && defined(CONFIG_HIGHMEM) && defined(CONFIG_64BIT_PHYS_ADDR)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 156 | /* 64-bit dma_addr_t */ |
| 157 | #define ADDR_64BITS /* This chip uses 64 bit addresses. */ |
Ion Badulescu | 6797423 | 2005-10-03 22:31:36 -0400 | [diff] [blame] | 158 | #define netdrv_addr_t u64 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 159 | #define cpu_to_dma(x) cpu_to_le64(x) |
| 160 | #define dma_to_cpu(x) le64_to_cpu(x) |
| 161 | #define RX_DESC_Q_ADDR_SIZE RxDescQAddr64bit |
| 162 | #define TX_DESC_Q_ADDR_SIZE TxDescQAddr64bit |
| 163 | #define RX_COMPL_Q_ADDR_SIZE RxComplQAddr64bit |
| 164 | #define TX_COMPL_Q_ADDR_SIZE TxComplQAddr64bit |
| 165 | #define RX_DESC_ADDR_SIZE RxDescAddr64bit |
| 166 | #else /* 32-bit dma_addr_t */ |
Ion Badulescu | 6797423 | 2005-10-03 22:31:36 -0400 | [diff] [blame] | 167 | #define netdrv_addr_t u32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 168 | #define cpu_to_dma(x) cpu_to_le32(x) |
| 169 | #define dma_to_cpu(x) le32_to_cpu(x) |
| 170 | #define RX_DESC_Q_ADDR_SIZE RxDescQAddr32bit |
| 171 | #define TX_DESC_Q_ADDR_SIZE TxDescQAddr32bit |
| 172 | #define RX_COMPL_Q_ADDR_SIZE RxComplQAddr32bit |
| 173 | #define TX_COMPL_Q_ADDR_SIZE TxComplQAddr32bit |
| 174 | #define RX_DESC_ADDR_SIZE RxDescAddr32bit |
| 175 | #endif |
| 176 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 177 | #define skb_first_frag_len(skb) skb_headlen(skb) |
| 178 | #define skb_num_frags(skb) (skb_shinfo(skb)->nr_frags + 1) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 179 | |
| 180 | #ifdef HAVE_NETDEV_POLL |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 181 | #define init_poll(dev, np) \ |
| 182 | netif_napi_add(dev, &np->napi, netdev_poll, max_interrupt_work) |
| 183 | #define netdev_rx(dev, np, ioaddr) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 184 | do { \ |
| 185 | u32 intr_enable; \ |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 186 | if (netif_rx_schedule_prep(dev, &np->napi)) { \ |
| 187 | __netif_rx_schedule(dev, &np->napi); \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 188 | intr_enable = readl(ioaddr + IntrEnable); \ |
| 189 | intr_enable &= ~(IntrRxDone | IntrRxEmpty); \ |
| 190 | writel(intr_enable, ioaddr + IntrEnable); \ |
| 191 | readl(ioaddr + IntrEnable); /* flush PCI posting buffers */ \ |
| 192 | } else { \ |
| 193 | /* Paranoia check */ \ |
| 194 | intr_enable = readl(ioaddr + IntrEnable); \ |
| 195 | if (intr_enable & (IntrRxDone | IntrRxEmpty)) { \ |
Jeff Garzik | fdecea6 | 2005-05-12 20:16:24 -0400 | [diff] [blame] | 196 | printk(KERN_INFO "%s: interrupt while in polling mode!\n", dev->name); \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 197 | intr_enable &= ~(IntrRxDone | IntrRxEmpty); \ |
| 198 | writel(intr_enable, ioaddr + IntrEnable); \ |
| 199 | } \ |
| 200 | } \ |
| 201 | } while (0) |
| 202 | #define netdev_receive_skb(skb) netif_receive_skb(skb) |
| 203 | #define vlan_netdev_receive_skb(skb, vlgrp, vlid) vlan_hwaccel_receive_skb(skb, vlgrp, vlid) |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 204 | static int netdev_poll(struct napi_struct *napi, int budget); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 205 | #else /* not HAVE_NETDEV_POLL */ |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 206 | #define init_poll(dev, np) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 207 | #define netdev_receive_skb(skb) netif_rx(skb) |
| 208 | #define vlan_netdev_receive_skb(skb, vlgrp, vlid) vlan_hwaccel_rx(skb, vlgrp, vlid) |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 209 | #define netdev_rx(dev, np, ioaddr) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 210 | do { \ |
| 211 | int quota = np->dirty_rx + RX_RING_SIZE - np->cur_rx; \ |
| 212 | __netdev_rx(dev, "a);\ |
| 213 | } while (0) |
| 214 | #endif /* not HAVE_NETDEV_POLL */ |
| 215 | /* end of compatibility code */ |
| 216 | |
| 217 | |
| 218 | /* These identify the driver base version and may not be removed. */ |
Randy Dunlap | e19360f | 2006-04-10 23:22:06 -0700 | [diff] [blame] | 219 | static const char version[] __devinitdata = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 220 | KERN_INFO "starfire.c:v1.03 7/26/2000 Written by Donald Becker <becker@scyld.com>\n" |
| 221 | KERN_INFO " (unofficial 2.2/2.4 kernel port, version " DRV_VERSION ", " DRV_RELDATE ")\n"; |
| 222 | |
| 223 | MODULE_AUTHOR("Donald Becker <becker@scyld.com>"); |
| 224 | MODULE_DESCRIPTION("Adaptec Starfire Ethernet driver"); |
| 225 | MODULE_LICENSE("GPL"); |
Jeff Garzik | fdecea6 | 2005-05-12 20:16:24 -0400 | [diff] [blame] | 226 | MODULE_VERSION(DRV_VERSION); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 227 | |
| 228 | module_param(max_interrupt_work, int, 0); |
| 229 | module_param(mtu, int, 0); |
| 230 | module_param(debug, int, 0); |
| 231 | module_param(rx_copybreak, int, 0); |
| 232 | module_param(intr_latency, int, 0); |
| 233 | module_param(small_frames, int, 0); |
| 234 | module_param_array(options, int, NULL, 0); |
| 235 | module_param_array(full_duplex, int, NULL, 0); |
| 236 | module_param(enable_hw_cksum, int, 0); |
| 237 | MODULE_PARM_DESC(max_interrupt_work, "Maximum events handled per interrupt"); |
| 238 | MODULE_PARM_DESC(mtu, "MTU (all boards)"); |
| 239 | MODULE_PARM_DESC(debug, "Debug level (0-6)"); |
| 240 | MODULE_PARM_DESC(rx_copybreak, "Copy breakpoint for copy-only-tiny-frames"); |
| 241 | MODULE_PARM_DESC(intr_latency, "Maximum interrupt latency, in microseconds"); |
| 242 | MODULE_PARM_DESC(small_frames, "Maximum size of receive frames that bypass interrupt latency (0,64,128,256,512)"); |
| 243 | MODULE_PARM_DESC(options, "Deprecated: Bits 0-3: media type, bit 17: full duplex"); |
| 244 | MODULE_PARM_DESC(full_duplex, "Deprecated: Forced full-duplex setting (0/1)"); |
| 245 | MODULE_PARM_DESC(enable_hw_cksum, "Enable/disable hardware cksum support (0/1)"); |
| 246 | |
| 247 | /* |
| 248 | Theory of Operation |
| 249 | |
| 250 | I. Board Compatibility |
| 251 | |
| 252 | This driver is for the Adaptec 6915 "Starfire" 64 bit PCI Ethernet adapter. |
| 253 | |
| 254 | II. Board-specific settings |
| 255 | |
| 256 | III. Driver operation |
| 257 | |
| 258 | IIIa. Ring buffers |
| 259 | |
| 260 | The Starfire hardware uses multiple fixed-size descriptor queues/rings. The |
| 261 | ring sizes are set fixed by the hardware, but may optionally be wrapped |
| 262 | earlier by the END bit in the descriptor. |
| 263 | This driver uses that hardware queue size for the Rx ring, where a large |
| 264 | number of entries has no ill effect beyond increases the potential backlog. |
| 265 | The Tx ring is wrapped with the END bit, since a large hardware Tx queue |
| 266 | disables the queue layer priority ordering and we have no mechanism to |
| 267 | utilize the hardware two-level priority queue. When modifying the |
| 268 | RX/TX_RING_SIZE pay close attention to page sizes and the ring-empty warning |
| 269 | levels. |
| 270 | |
| 271 | IIIb/c. Transmit/Receive Structure |
| 272 | |
| 273 | See the Adaptec manual for the many possible structures, and options for |
| 274 | each structure. There are far too many to document all of them here. |
| 275 | |
| 276 | For transmit this driver uses type 0/1 transmit descriptors (depending |
| 277 | on the 32/64 bitness of the architecture), and relies on automatic |
| 278 | minimum-length padding. It does not use the completion queue |
| 279 | consumer index, but instead checks for non-zero status entries. |
| 280 | |
Jeff Garzik | fdecea6 | 2005-05-12 20:16:24 -0400 | [diff] [blame] | 281 | For receive this driver uses type 2/3 receive descriptors. The driver |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 282 | allocates full frame size skbuffs for the Rx ring buffers, so all frames |
| 283 | should fit in a single descriptor. The driver does not use the completion |
| 284 | queue consumer index, but instead checks for non-zero status entries. |
| 285 | |
| 286 | When an incoming frame is less than RX_COPYBREAK bytes long, a fresh skbuff |
| 287 | is allocated and the frame is copied to the new skbuff. When the incoming |
| 288 | frame is larger, the skbuff is passed directly up the protocol stack. |
| 289 | Buffers consumed this way are replaced by newly allocated skbuffs in a later |
| 290 | phase of receive. |
| 291 | |
| 292 | A notable aspect of operation is that unaligned buffers are not permitted by |
| 293 | the Starfire hardware. Thus the IP header at offset 14 in an ethernet frame |
| 294 | isn't longword aligned, which may cause problems on some machine |
| 295 | e.g. Alphas and IA64. For these architectures, the driver is forced to copy |
| 296 | the frame into a new skbuff unconditionally. Copied frames are put into the |
| 297 | skbuff at an offset of "+2", thus 16-byte aligning the IP header. |
| 298 | |
| 299 | IIId. Synchronization |
| 300 | |
| 301 | The driver runs as two independent, single-threaded flows of control. One |
| 302 | is the send-packet routine, which enforces single-threaded use by the |
| 303 | dev->tbusy flag. The other thread is the interrupt handler, which is single |
| 304 | threaded by the hardware and interrupt handling software. |
| 305 | |
| 306 | The send packet thread has partial control over the Tx ring and the netif_queue |
| 307 | status. If the number of free Tx slots in the ring falls below a certain number |
| 308 | (currently hardcoded to 4), it signals the upper layer to stop the queue. |
| 309 | |
| 310 | The interrupt handler has exclusive control over the Rx ring and records stats |
| 311 | from the Tx ring. After reaping the stats, it marks the Tx queue entry as |
| 312 | empty by incrementing the dirty_tx mark. Iff the netif_queue is stopped and the |
| 313 | number of free Tx slow is above the threshold, it signals the upper layer to |
| 314 | restart the queue. |
| 315 | |
| 316 | IV. Notes |
| 317 | |
| 318 | IVb. References |
| 319 | |
| 320 | The Adaptec Starfire manuals, available only from Adaptec. |
| 321 | http://www.scyld.com/expert/100mbps.html |
| 322 | http://www.scyld.com/expert/NWay.html |
| 323 | |
| 324 | IVc. Errata |
| 325 | |
| 326 | - StopOnPerr is broken, don't enable |
| 327 | - Hardware ethernet padding exposes random data, perform software padding |
| 328 | instead (unverified -- works correctly for all the hardware I have) |
| 329 | |
| 330 | */ |
| 331 | |
Jeff Garzik | fdecea6 | 2005-05-12 20:16:24 -0400 | [diff] [blame] | 332 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 333 | |
| 334 | enum chip_capability_flags {CanHaveMII=1, }; |
| 335 | |
| 336 | enum chipset { |
| 337 | CH_6915 = 0, |
| 338 | }; |
| 339 | |
| 340 | static struct pci_device_id starfire_pci_tbl[] = { |
| 341 | { 0x9004, 0x6915, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_6915 }, |
| 342 | { 0, } |
| 343 | }; |
| 344 | MODULE_DEVICE_TABLE(pci, starfire_pci_tbl); |
| 345 | |
| 346 | /* A chip capabilities table, matching the CH_xxx entries in xxx_pci_tbl[] above. */ |
Arjan van de Ven | f71e130 | 2006-03-03 21:33:57 -0500 | [diff] [blame] | 347 | static const struct chip_info { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 348 | const char *name; |
| 349 | int drv_flags; |
| 350 | } netdrv_tbl[] __devinitdata = { |
| 351 | { "Adaptec Starfire 6915", CanHaveMII }, |
| 352 | }; |
| 353 | |
| 354 | |
| 355 | /* Offsets to the device registers. |
| 356 | Unlike software-only systems, device drivers interact with complex hardware. |
| 357 | It's not useful to define symbolic names for every register bit in the |
| 358 | device. The name can only partially document the semantics and make |
| 359 | the driver longer and more difficult to read. |
| 360 | In general, only the important configuration values or bits changed |
| 361 | multiple times should be defined symbolically. |
| 362 | */ |
| 363 | enum register_offsets { |
| 364 | PCIDeviceConfig=0x50040, GenCtrl=0x50070, IntrTimerCtrl=0x50074, |
| 365 | IntrClear=0x50080, IntrStatus=0x50084, IntrEnable=0x50088, |
| 366 | MIICtrl=0x52000, TxStationAddr=0x50120, EEPROMCtrl=0x51000, |
| 367 | GPIOCtrl=0x5008C, TxDescCtrl=0x50090, |
| 368 | TxRingPtr=0x50098, HiPriTxRingPtr=0x50094, /* Low and High priority. */ |
| 369 | TxRingHiAddr=0x5009C, /* 64 bit address extension. */ |
| 370 | TxProducerIdx=0x500A0, TxConsumerIdx=0x500A4, |
| 371 | TxThreshold=0x500B0, |
| 372 | CompletionHiAddr=0x500B4, TxCompletionAddr=0x500B8, |
| 373 | RxCompletionAddr=0x500BC, RxCompletionQ2Addr=0x500C0, |
| 374 | CompletionQConsumerIdx=0x500C4, RxDMACtrl=0x500D0, |
| 375 | RxDescQCtrl=0x500D4, RxDescQHiAddr=0x500DC, RxDescQAddr=0x500E0, |
| 376 | RxDescQIdx=0x500E8, RxDMAStatus=0x500F0, RxFilterMode=0x500F4, |
| 377 | TxMode=0x55000, VlanType=0x55064, |
| 378 | PerfFilterTable=0x56000, HashTable=0x56100, |
| 379 | TxGfpMem=0x58000, RxGfpMem=0x5a000, |
| 380 | }; |
| 381 | |
| 382 | /* |
| 383 | * Bits in the interrupt status/mask registers. |
| 384 | * Warning: setting Intr[Ab]NormalSummary in the IntrEnable register |
| 385 | * enables all the interrupt sources that are or'ed into those status bits. |
| 386 | */ |
| 387 | enum intr_status_bits { |
| 388 | IntrLinkChange=0xf0000000, IntrStatsMax=0x08000000, |
| 389 | IntrAbnormalSummary=0x02000000, IntrGeneralTimer=0x01000000, |
| 390 | IntrSoftware=0x800000, IntrRxComplQ1Low=0x400000, |
| 391 | IntrTxComplQLow=0x200000, IntrPCI=0x100000, |
| 392 | IntrDMAErr=0x080000, IntrTxDataLow=0x040000, |
| 393 | IntrRxComplQ2Low=0x020000, IntrRxDescQ1Low=0x010000, |
| 394 | IntrNormalSummary=0x8000, IntrTxDone=0x4000, |
| 395 | IntrTxDMADone=0x2000, IntrTxEmpty=0x1000, |
| 396 | IntrEarlyRxQ2=0x0800, IntrEarlyRxQ1=0x0400, |
| 397 | IntrRxQ2Done=0x0200, IntrRxQ1Done=0x0100, |
| 398 | IntrRxGFPDead=0x80, IntrRxDescQ2Low=0x40, |
| 399 | IntrNoTxCsum=0x20, IntrTxBadID=0x10, |
| 400 | IntrHiPriTxBadID=0x08, IntrRxGfp=0x04, |
| 401 | IntrTxGfp=0x02, IntrPCIPad=0x01, |
| 402 | /* not quite bits */ |
| 403 | IntrRxDone=IntrRxQ2Done | IntrRxQ1Done, |
| 404 | IntrRxEmpty=IntrRxDescQ1Low | IntrRxDescQ2Low, |
| 405 | IntrNormalMask=0xff00, IntrAbnormalMask=0x3ff00fe, |
| 406 | }; |
| 407 | |
| 408 | /* Bits in the RxFilterMode register. */ |
| 409 | enum rx_mode_bits { |
| 410 | AcceptBroadcast=0x04, AcceptAllMulticast=0x02, AcceptAll=0x01, |
| 411 | AcceptMulticast=0x10, PerfectFilter=0x40, HashFilter=0x30, |
| 412 | PerfectFilterVlan=0x80, MinVLANPrio=0xE000, VlanMode=0x0200, |
| 413 | WakeupOnGFP=0x0800, |
| 414 | }; |
| 415 | |
| 416 | /* Bits in the TxMode register */ |
| 417 | enum tx_mode_bits { |
| 418 | MiiSoftReset=0x8000, MIILoopback=0x4000, |
| 419 | TxFlowEnable=0x0800, RxFlowEnable=0x0400, |
| 420 | PadEnable=0x04, FullDuplex=0x02, HugeFrame=0x01, |
| 421 | }; |
| 422 | |
| 423 | /* Bits in the TxDescCtrl register. */ |
| 424 | enum tx_ctrl_bits { |
| 425 | TxDescSpaceUnlim=0x00, TxDescSpace32=0x10, TxDescSpace64=0x20, |
| 426 | TxDescSpace128=0x30, TxDescSpace256=0x40, |
| 427 | TxDescType0=0x00, TxDescType1=0x01, TxDescType2=0x02, |
| 428 | TxDescType3=0x03, TxDescType4=0x04, |
| 429 | TxNoDMACompletion=0x08, |
| 430 | TxDescQAddr64bit=0x80, TxDescQAddr32bit=0, |
| 431 | TxHiPriFIFOThreshShift=24, TxPadLenShift=16, |
| 432 | TxDMABurstSizeShift=8, |
| 433 | }; |
| 434 | |
| 435 | /* Bits in the RxDescQCtrl register. */ |
| 436 | enum rx_ctrl_bits { |
| 437 | RxBufferLenShift=16, RxMinDescrThreshShift=0, |
| 438 | RxPrefetchMode=0x8000, RxVariableQ=0x2000, |
| 439 | Rx2048QEntries=0x4000, Rx256QEntries=0, |
| 440 | RxDescAddr64bit=0x1000, RxDescAddr32bit=0, |
| 441 | RxDescQAddr64bit=0x0100, RxDescQAddr32bit=0, |
| 442 | RxDescSpace4=0x000, RxDescSpace8=0x100, |
| 443 | RxDescSpace16=0x200, RxDescSpace32=0x300, |
| 444 | RxDescSpace64=0x400, RxDescSpace128=0x500, |
| 445 | RxConsumerWrEn=0x80, |
| 446 | }; |
| 447 | |
| 448 | /* Bits in the RxDMACtrl register. */ |
| 449 | enum rx_dmactrl_bits { |
| 450 | RxReportBadFrames=0x80000000, RxDMAShortFrames=0x40000000, |
| 451 | RxDMABadFrames=0x20000000, RxDMACrcErrorFrames=0x10000000, |
| 452 | RxDMAControlFrame=0x08000000, RxDMAPauseFrame=0x04000000, |
| 453 | RxChecksumIgnore=0, RxChecksumRejectTCPUDP=0x02000000, |
| 454 | RxChecksumRejectTCPOnly=0x01000000, |
| 455 | RxCompletionQ2Enable=0x800000, |
| 456 | RxDMAQ2Disable=0, RxDMAQ2FPOnly=0x100000, |
| 457 | RxDMAQ2SmallPkt=0x200000, RxDMAQ2HighPrio=0x300000, |
| 458 | RxDMAQ2NonIP=0x400000, |
| 459 | RxUseBackupQueue=0x080000, RxDMACRC=0x040000, |
| 460 | RxEarlyIntThreshShift=12, RxHighPrioThreshShift=8, |
| 461 | RxBurstSizeShift=0, |
| 462 | }; |
| 463 | |
| 464 | /* Bits in the RxCompletionAddr register */ |
| 465 | enum rx_compl_bits { |
| 466 | RxComplQAddr64bit=0x80, RxComplQAddr32bit=0, |
| 467 | RxComplProducerWrEn=0x40, |
| 468 | RxComplType0=0x00, RxComplType1=0x10, |
| 469 | RxComplType2=0x20, RxComplType3=0x30, |
| 470 | RxComplThreshShift=0, |
| 471 | }; |
| 472 | |
| 473 | /* Bits in the TxCompletionAddr register */ |
| 474 | enum tx_compl_bits { |
| 475 | TxComplQAddr64bit=0x80, TxComplQAddr32bit=0, |
| 476 | TxComplProducerWrEn=0x40, |
| 477 | TxComplIntrStatus=0x20, |
| 478 | CommonQueueMode=0x10, |
| 479 | TxComplThreshShift=0, |
| 480 | }; |
| 481 | |
| 482 | /* Bits in the GenCtrl register */ |
| 483 | enum gen_ctrl_bits { |
| 484 | RxEnable=0x05, TxEnable=0x0a, |
| 485 | RxGFPEnable=0x10, TxGFPEnable=0x20, |
| 486 | }; |
| 487 | |
| 488 | /* Bits in the IntrTimerCtrl register */ |
| 489 | enum intr_ctrl_bits { |
| 490 | Timer10X=0x800, EnableIntrMasking=0x60, SmallFrameBypass=0x100, |
| 491 | SmallFrame64=0, SmallFrame128=0x200, SmallFrame256=0x400, SmallFrame512=0x600, |
| 492 | IntrLatencyMask=0x1f, |
| 493 | }; |
| 494 | |
| 495 | /* The Rx and Tx buffer descriptors. */ |
| 496 | struct starfire_rx_desc { |
| 497 | dma_addr_t rxaddr; |
| 498 | }; |
| 499 | enum rx_desc_bits { |
| 500 | RxDescValid=1, RxDescEndRing=2, |
| 501 | }; |
| 502 | |
| 503 | /* Completion queue entry. */ |
| 504 | struct short_rx_done_desc { |
| 505 | u32 status; /* Low 16 bits is length. */ |
| 506 | }; |
| 507 | struct basic_rx_done_desc { |
| 508 | u32 status; /* Low 16 bits is length. */ |
| 509 | u16 vlanid; |
| 510 | u16 status2; |
| 511 | }; |
| 512 | struct csum_rx_done_desc { |
| 513 | u32 status; /* Low 16 bits is length. */ |
| 514 | u16 csum; /* Partial checksum */ |
| 515 | u16 status2; |
| 516 | }; |
| 517 | struct full_rx_done_desc { |
| 518 | u32 status; /* Low 16 bits is length. */ |
| 519 | u16 status3; |
| 520 | u16 status2; |
| 521 | u16 vlanid; |
| 522 | u16 csum; /* partial checksum */ |
| 523 | u32 timestamp; |
| 524 | }; |
| 525 | /* XXX: this is ugly and I'm not sure it's worth the trouble -Ion */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 526 | #ifdef VLAN_SUPPORT |
| 527 | typedef struct full_rx_done_desc rx_done_desc; |
| 528 | #define RxComplType RxComplType3 |
| 529 | #else /* not VLAN_SUPPORT */ |
| 530 | typedef struct csum_rx_done_desc rx_done_desc; |
| 531 | #define RxComplType RxComplType2 |
| 532 | #endif /* not VLAN_SUPPORT */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 533 | |
| 534 | enum rx_done_bits { |
| 535 | RxOK=0x20000000, RxFIFOErr=0x10000000, RxBufQ2=0x08000000, |
| 536 | }; |
| 537 | |
| 538 | /* Type 1 Tx descriptor. */ |
| 539 | struct starfire_tx_desc_1 { |
| 540 | u32 status; /* Upper bits are status, lower 16 length. */ |
| 541 | u32 addr; |
| 542 | }; |
| 543 | |
| 544 | /* Type 2 Tx descriptor. */ |
| 545 | struct starfire_tx_desc_2 { |
| 546 | u32 status; /* Upper bits are status, lower 16 length. */ |
| 547 | u32 reserved; |
| 548 | u64 addr; |
| 549 | }; |
| 550 | |
| 551 | #ifdef ADDR_64BITS |
| 552 | typedef struct starfire_tx_desc_2 starfire_tx_desc; |
| 553 | #define TX_DESC_TYPE TxDescType2 |
| 554 | #else /* not ADDR_64BITS */ |
| 555 | typedef struct starfire_tx_desc_1 starfire_tx_desc; |
| 556 | #define TX_DESC_TYPE TxDescType1 |
| 557 | #endif /* not ADDR_64BITS */ |
| 558 | #define TX_DESC_SPACING TxDescSpaceUnlim |
| 559 | |
| 560 | enum tx_desc_bits { |
| 561 | TxDescID=0xB0000000, |
| 562 | TxCRCEn=0x01000000, TxDescIntr=0x08000000, |
| 563 | TxRingWrap=0x04000000, TxCalTCP=0x02000000, |
| 564 | }; |
| 565 | struct tx_done_desc { |
| 566 | u32 status; /* timestamp, index. */ |
| 567 | #if 0 |
| 568 | u32 intrstatus; /* interrupt status */ |
| 569 | #endif |
| 570 | }; |
| 571 | |
| 572 | struct rx_ring_info { |
| 573 | struct sk_buff *skb; |
| 574 | dma_addr_t mapping; |
| 575 | }; |
| 576 | struct tx_ring_info { |
| 577 | struct sk_buff *skb; |
| 578 | dma_addr_t mapping; |
| 579 | unsigned int used_slots; |
| 580 | }; |
| 581 | |
| 582 | #define PHY_CNT 2 |
| 583 | struct netdev_private { |
| 584 | /* Descriptor rings first for alignment. */ |
| 585 | struct starfire_rx_desc *rx_ring; |
| 586 | starfire_tx_desc *tx_ring; |
| 587 | dma_addr_t rx_ring_dma; |
| 588 | dma_addr_t tx_ring_dma; |
| 589 | /* The addresses of rx/tx-in-place skbuffs. */ |
| 590 | struct rx_ring_info rx_info[RX_RING_SIZE]; |
| 591 | struct tx_ring_info tx_info[TX_RING_SIZE]; |
| 592 | /* Pointers to completion queues (full pages). */ |
| 593 | rx_done_desc *rx_done_q; |
| 594 | dma_addr_t rx_done_q_dma; |
| 595 | unsigned int rx_done; |
| 596 | struct tx_done_desc *tx_done_q; |
| 597 | dma_addr_t tx_done_q_dma; |
| 598 | unsigned int tx_done; |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 599 | struct napi_struct napi; |
| 600 | struct net_device *dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 601 | struct net_device_stats stats; |
| 602 | struct pci_dev *pci_dev; |
| 603 | #ifdef VLAN_SUPPORT |
| 604 | struct vlan_group *vlgrp; |
| 605 | #endif |
| 606 | void *queue_mem; |
| 607 | dma_addr_t queue_mem_dma; |
| 608 | size_t queue_mem_size; |
| 609 | |
| 610 | /* Frequently used values: keep some adjacent for cache effect. */ |
| 611 | spinlock_t lock; |
| 612 | unsigned int cur_rx, dirty_rx; /* Producer/consumer ring indices */ |
| 613 | unsigned int cur_tx, dirty_tx, reap_tx; |
| 614 | unsigned int rx_buf_sz; /* Based on MTU+slack. */ |
| 615 | /* These values keep track of the transceiver/media in use. */ |
| 616 | int speed100; /* Set if speed == 100MBit. */ |
| 617 | u32 tx_mode; |
| 618 | u32 intr_timer_ctrl; |
| 619 | u8 tx_threshold; |
| 620 | /* MII transceiver section. */ |
| 621 | struct mii_if_info mii_if; /* MII lib hooks/info */ |
| 622 | int phy_cnt; /* MII device addresses. */ |
| 623 | unsigned char phys[PHY_CNT]; /* MII device addresses. */ |
| 624 | void __iomem *base; |
| 625 | }; |
| 626 | |
| 627 | |
| 628 | static int mdio_read(struct net_device *dev, int phy_id, int location); |
| 629 | static void mdio_write(struct net_device *dev, int phy_id, int location, int value); |
| 630 | static int netdev_open(struct net_device *dev); |
| 631 | static void check_duplex(struct net_device *dev); |
| 632 | static void tx_timeout(struct net_device *dev); |
| 633 | static void init_ring(struct net_device *dev); |
| 634 | static int start_tx(struct sk_buff *skb, struct net_device *dev); |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 635 | static irqreturn_t intr_handler(int irq, void *dev_instance); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 636 | static void netdev_error(struct net_device *dev, int intr_status); |
| 637 | static int __netdev_rx(struct net_device *dev, int *quota); |
| 638 | static void refill_rx_ring(struct net_device *dev); |
| 639 | static void netdev_error(struct net_device *dev, int intr_status); |
| 640 | static void set_rx_mode(struct net_device *dev); |
| 641 | static struct net_device_stats *get_stats(struct net_device *dev); |
| 642 | static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); |
| 643 | static int netdev_close(struct net_device *dev); |
| 644 | static void netdev_media_change(struct net_device *dev); |
Jeff Garzik | 7282d49 | 2006-09-13 14:30:00 -0400 | [diff] [blame] | 645 | static const struct ethtool_ops ethtool_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 646 | |
| 647 | |
| 648 | #ifdef VLAN_SUPPORT |
| 649 | static void netdev_vlan_rx_register(struct net_device *dev, struct vlan_group *grp) |
| 650 | { |
| 651 | struct netdev_private *np = netdev_priv(dev); |
| 652 | |
| 653 | spin_lock(&np->lock); |
| 654 | if (debug > 2) |
| 655 | printk("%s: Setting vlgrp to %p\n", dev->name, grp); |
| 656 | np->vlgrp = grp; |
| 657 | set_rx_mode(dev); |
| 658 | spin_unlock(&np->lock); |
| 659 | } |
| 660 | |
| 661 | static void netdev_vlan_rx_add_vid(struct net_device *dev, unsigned short vid) |
| 662 | { |
| 663 | struct netdev_private *np = netdev_priv(dev); |
| 664 | |
| 665 | spin_lock(&np->lock); |
| 666 | if (debug > 1) |
| 667 | printk("%s: Adding vlanid %d to vlan filter\n", dev->name, vid); |
| 668 | set_rx_mode(dev); |
| 669 | spin_unlock(&np->lock); |
| 670 | } |
| 671 | |
| 672 | static void netdev_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid) |
| 673 | { |
| 674 | struct netdev_private *np = netdev_priv(dev); |
| 675 | |
| 676 | spin_lock(&np->lock); |
| 677 | if (debug > 1) |
| 678 | printk("%s: removing vlanid %d from vlan filter\n", dev->name, vid); |
Dan Aloni | 5c15bde | 2007-03-02 20:44:51 -0800 | [diff] [blame] | 679 | vlan_group_set_device(np->vlgrp, vid, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 680 | set_rx_mode(dev); |
| 681 | spin_unlock(&np->lock); |
| 682 | } |
| 683 | #endif /* VLAN_SUPPORT */ |
| 684 | |
| 685 | |
| 686 | static int __devinit starfire_init_one(struct pci_dev *pdev, |
| 687 | const struct pci_device_id *ent) |
| 688 | { |
| 689 | struct netdev_private *np; |
| 690 | int i, irq, option, chip_idx = ent->driver_data; |
| 691 | struct net_device *dev; |
| 692 | static int card_idx = -1; |
| 693 | long ioaddr; |
| 694 | void __iomem *base; |
| 695 | int drv_flags, io_size; |
| 696 | int boguscnt; |
Joe Perches | 0795af5 | 2007-10-03 17:59:30 -0700 | [diff] [blame] | 697 | DECLARE_MAC_BUF(mac); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 698 | |
| 699 | /* when built into the kernel, we only print version if device is found */ |
| 700 | #ifndef MODULE |
| 701 | static int printed_version; |
| 702 | if (!printed_version++) |
| 703 | printk(version); |
| 704 | #endif |
| 705 | |
| 706 | card_idx++; |
| 707 | |
| 708 | if (pci_enable_device (pdev)) |
| 709 | return -EIO; |
| 710 | |
| 711 | ioaddr = pci_resource_start(pdev, 0); |
| 712 | io_size = pci_resource_len(pdev, 0); |
| 713 | if (!ioaddr || ((pci_resource_flags(pdev, 0) & IORESOURCE_MEM) == 0)) { |
| 714 | printk(KERN_ERR DRV_NAME " %d: no PCI MEM resources, aborting\n", card_idx); |
| 715 | return -ENODEV; |
| 716 | } |
| 717 | |
| 718 | dev = alloc_etherdev(sizeof(*np)); |
| 719 | if (!dev) { |
| 720 | printk(KERN_ERR DRV_NAME " %d: cannot alloc etherdev, aborting\n", card_idx); |
| 721 | return -ENOMEM; |
| 722 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 723 | SET_NETDEV_DEV(dev, &pdev->dev); |
| 724 | |
| 725 | irq = pdev->irq; |
| 726 | |
| 727 | if (pci_request_regions (pdev, DRV_NAME)) { |
| 728 | printk(KERN_ERR DRV_NAME " %d: cannot reserve PCI resources, aborting\n", card_idx); |
| 729 | goto err_out_free_netdev; |
| 730 | } |
| 731 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 732 | base = ioremap(ioaddr, io_size); |
| 733 | if (!base) { |
| 734 | printk(KERN_ERR DRV_NAME " %d: cannot remap %#x @ %#lx, aborting\n", |
| 735 | card_idx, io_size, ioaddr); |
| 736 | goto err_out_free_res; |
| 737 | } |
| 738 | |
| 739 | pci_set_master(pdev); |
| 740 | |
| 741 | /* enable MWI -- it vastly improves Rx performance on sparc64 */ |
Randy Dunlap | 694625c | 2007-07-09 11:55:54 -0700 | [diff] [blame] | 742 | pci_try_set_mwi(pdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 743 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 744 | #ifdef ZEROCOPY |
| 745 | /* Starfire can do TCP/UDP checksumming */ |
| 746 | if (enable_hw_cksum) |
Jeff Garzik | fdecea6 | 2005-05-12 20:16:24 -0400 | [diff] [blame] | 747 | dev->features |= NETIF_F_IP_CSUM | NETIF_F_SG; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 748 | #endif /* ZEROCOPY */ |
| 749 | #ifdef VLAN_SUPPORT |
| 750 | dev->features |= NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER; |
| 751 | dev->vlan_rx_register = netdev_vlan_rx_register; |
| 752 | dev->vlan_rx_add_vid = netdev_vlan_rx_add_vid; |
| 753 | dev->vlan_rx_kill_vid = netdev_vlan_rx_kill_vid; |
| 754 | #endif /* VLAN_RX_KILL_VID */ |
| 755 | #ifdef ADDR_64BITS |
| 756 | dev->features |= NETIF_F_HIGHDMA; |
| 757 | #endif /* ADDR_64BITS */ |
| 758 | |
| 759 | /* Serial EEPROM reads are hidden by the hardware. */ |
| 760 | for (i = 0; i < 6; i++) |
| 761 | dev->dev_addr[i] = readb(base + EEPROMCtrl + 20 - i); |
| 762 | |
| 763 | #if ! defined(final_version) /* Dump the EEPROM contents during development. */ |
| 764 | if (debug > 4) |
| 765 | for (i = 0; i < 0x20; i++) |
| 766 | printk("%2.2x%s", |
| 767 | (unsigned int)readb(base + EEPROMCtrl + i), |
| 768 | i % 16 != 15 ? " " : "\n"); |
| 769 | #endif |
| 770 | |
| 771 | /* Issue soft reset */ |
| 772 | writel(MiiSoftReset, base + TxMode); |
| 773 | udelay(1000); |
| 774 | writel(0, base + TxMode); |
| 775 | |
| 776 | /* Reset the chip to erase previous misconfiguration. */ |
| 777 | writel(1, base + PCIDeviceConfig); |
| 778 | boguscnt = 1000; |
| 779 | while (--boguscnt > 0) { |
| 780 | udelay(10); |
| 781 | if ((readl(base + PCIDeviceConfig) & 1) == 0) |
| 782 | break; |
| 783 | } |
| 784 | if (boguscnt == 0) |
| 785 | printk("%s: chipset reset never completed!\n", dev->name); |
| 786 | /* wait a little longer */ |
| 787 | udelay(1000); |
| 788 | |
| 789 | dev->base_addr = (unsigned long)base; |
| 790 | dev->irq = irq; |
| 791 | |
| 792 | np = netdev_priv(dev); |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 793 | np->dev = dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 794 | np->base = base; |
| 795 | spin_lock_init(&np->lock); |
| 796 | pci_set_drvdata(pdev, dev); |
| 797 | |
| 798 | np->pci_dev = pdev; |
| 799 | |
| 800 | np->mii_if.dev = dev; |
| 801 | np->mii_if.mdio_read = mdio_read; |
| 802 | np->mii_if.mdio_write = mdio_write; |
| 803 | np->mii_if.phy_id_mask = 0x1f; |
| 804 | np->mii_if.reg_num_mask = 0x1f; |
| 805 | |
| 806 | drv_flags = netdrv_tbl[chip_idx].drv_flags; |
| 807 | |
| 808 | option = card_idx < MAX_UNITS ? options[card_idx] : 0; |
| 809 | if (dev->mem_start) |
| 810 | option = dev->mem_start; |
| 811 | |
| 812 | /* The lower four bits are the media type. */ |
| 813 | if (option & 0x200) |
| 814 | np->mii_if.full_duplex = 1; |
| 815 | |
| 816 | if (card_idx < MAX_UNITS && full_duplex[card_idx] > 0) |
| 817 | np->mii_if.full_duplex = 1; |
| 818 | |
| 819 | if (np->mii_if.full_duplex) |
| 820 | np->mii_if.force_media = 1; |
| 821 | else |
| 822 | np->mii_if.force_media = 0; |
| 823 | np->speed100 = 1; |
| 824 | |
| 825 | /* timer resolution is 128 * 0.8us */ |
| 826 | np->intr_timer_ctrl = (((intr_latency * 10) / 1024) & IntrLatencyMask) | |
| 827 | Timer10X | EnableIntrMasking; |
| 828 | |
| 829 | if (small_frames > 0) { |
| 830 | np->intr_timer_ctrl |= SmallFrameBypass; |
| 831 | switch (small_frames) { |
| 832 | case 1 ... 64: |
| 833 | np->intr_timer_ctrl |= SmallFrame64; |
| 834 | break; |
| 835 | case 65 ... 128: |
| 836 | np->intr_timer_ctrl |= SmallFrame128; |
| 837 | break; |
| 838 | case 129 ... 256: |
| 839 | np->intr_timer_ctrl |= SmallFrame256; |
| 840 | break; |
| 841 | default: |
| 842 | np->intr_timer_ctrl |= SmallFrame512; |
| 843 | if (small_frames > 512) |
| 844 | printk("Adjusting small_frames down to 512\n"); |
| 845 | break; |
| 846 | } |
| 847 | } |
| 848 | |
| 849 | /* The chip-specific entries in the device structure. */ |
| 850 | dev->open = &netdev_open; |
| 851 | dev->hard_start_xmit = &start_tx; |
Jeff Garzik | fdecea6 | 2005-05-12 20:16:24 -0400 | [diff] [blame] | 852 | dev->tx_timeout = tx_timeout; |
| 853 | dev->watchdog_timeo = TX_TIMEOUT; |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 854 | init_poll(dev, np); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 855 | dev->stop = &netdev_close; |
| 856 | dev->get_stats = &get_stats; |
| 857 | dev->set_multicast_list = &set_rx_mode; |
| 858 | dev->do_ioctl = &netdev_ioctl; |
| 859 | SET_ETHTOOL_OPS(dev, ðtool_ops); |
| 860 | |
| 861 | if (mtu) |
| 862 | dev->mtu = mtu; |
| 863 | |
| 864 | if (register_netdev(dev)) |
| 865 | goto err_out_cleardev; |
| 866 | |
Joe Perches | 0795af5 | 2007-10-03 17:59:30 -0700 | [diff] [blame] | 867 | printk(KERN_INFO "%s: %s at %p, %s, IRQ %d.\n", |
| 868 | dev->name, netdrv_tbl[chip_idx].name, base, |
| 869 | print_mac(mac, dev->dev_addr), irq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 870 | |
| 871 | if (drv_flags & CanHaveMII) { |
| 872 | int phy, phy_idx = 0; |
| 873 | int mii_status; |
| 874 | for (phy = 0; phy < 32 && phy_idx < PHY_CNT; phy++) { |
| 875 | mdio_write(dev, phy, MII_BMCR, BMCR_RESET); |
| 876 | mdelay(100); |
| 877 | boguscnt = 1000; |
| 878 | while (--boguscnt > 0) |
| 879 | if ((mdio_read(dev, phy, MII_BMCR) & BMCR_RESET) == 0) |
| 880 | break; |
| 881 | if (boguscnt == 0) { |
Jeff Garzik | fdecea6 | 2005-05-12 20:16:24 -0400 | [diff] [blame] | 882 | printk("%s: PHY#%d reset never completed!\n", dev->name, phy); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 883 | continue; |
| 884 | } |
| 885 | mii_status = mdio_read(dev, phy, MII_BMSR); |
| 886 | if (mii_status != 0) { |
| 887 | np->phys[phy_idx++] = phy; |
| 888 | np->mii_if.advertising = mdio_read(dev, phy, MII_ADVERTISE); |
| 889 | printk(KERN_INFO "%s: MII PHY found at address %d, status " |
| 890 | "%#4.4x advertising %#4.4x.\n", |
| 891 | dev->name, phy, mii_status, np->mii_if.advertising); |
| 892 | /* there can be only one PHY on-board */ |
| 893 | break; |
| 894 | } |
| 895 | } |
| 896 | np->phy_cnt = phy_idx; |
| 897 | if (np->phy_cnt > 0) |
| 898 | np->mii_if.phy_id = np->phys[0]; |
| 899 | else |
| 900 | memset(&np->mii_if, 0, sizeof(np->mii_if)); |
| 901 | } |
| 902 | |
| 903 | printk(KERN_INFO "%s: scatter-gather and hardware TCP cksumming %s.\n", |
| 904 | dev->name, enable_hw_cksum ? "enabled" : "disabled"); |
| 905 | return 0; |
| 906 | |
| 907 | err_out_cleardev: |
| 908 | pci_set_drvdata(pdev, NULL); |
| 909 | iounmap(base); |
| 910 | err_out_free_res: |
| 911 | pci_release_regions (pdev); |
| 912 | err_out_free_netdev: |
| 913 | free_netdev(dev); |
| 914 | return -ENODEV; |
| 915 | } |
| 916 | |
| 917 | |
| 918 | /* Read the MII Management Data I/O (MDIO) interfaces. */ |
| 919 | static int mdio_read(struct net_device *dev, int phy_id, int location) |
| 920 | { |
| 921 | struct netdev_private *np = netdev_priv(dev); |
| 922 | void __iomem *mdio_addr = np->base + MIICtrl + (phy_id<<7) + (location<<2); |
| 923 | int result, boguscnt=1000; |
| 924 | /* ??? Should we add a busy-wait here? */ |
| 925 | do |
| 926 | result = readl(mdio_addr); |
| 927 | while ((result & 0xC0000000) != 0x80000000 && --boguscnt > 0); |
| 928 | if (boguscnt == 0) |
| 929 | return 0; |
| 930 | if ((result & 0xffff) == 0xffff) |
| 931 | return 0; |
| 932 | return result & 0xffff; |
| 933 | } |
| 934 | |
| 935 | |
| 936 | static void mdio_write(struct net_device *dev, int phy_id, int location, int value) |
| 937 | { |
| 938 | struct netdev_private *np = netdev_priv(dev); |
| 939 | void __iomem *mdio_addr = np->base + MIICtrl + (phy_id<<7) + (location<<2); |
| 940 | writel(value, mdio_addr); |
| 941 | /* The busy-wait will occur before a read. */ |
| 942 | } |
| 943 | |
| 944 | |
| 945 | static int netdev_open(struct net_device *dev) |
| 946 | { |
| 947 | struct netdev_private *np = netdev_priv(dev); |
| 948 | void __iomem *ioaddr = np->base; |
| 949 | int i, retval; |
| 950 | size_t tx_done_q_size, rx_done_q_size, tx_ring_size, rx_ring_size; |
| 951 | |
| 952 | /* Do we ever need to reset the chip??? */ |
Jeff Garzik | fdecea6 | 2005-05-12 20:16:24 -0400 | [diff] [blame] | 953 | |
Thomas Gleixner | 1fb9df5 | 2006-07-01 19:29:39 -0700 | [diff] [blame] | 954 | retval = request_irq(dev->irq, &intr_handler, IRQF_SHARED, dev->name, dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 955 | if (retval) |
| 956 | return retval; |
| 957 | |
| 958 | /* Disable the Rx and Tx, and reset the chip. */ |
| 959 | writel(0, ioaddr + GenCtrl); |
| 960 | writel(1, ioaddr + PCIDeviceConfig); |
| 961 | if (debug > 1) |
| 962 | printk(KERN_DEBUG "%s: netdev_open() irq %d.\n", |
| 963 | dev->name, dev->irq); |
| 964 | |
| 965 | /* Allocate the various queues. */ |
| 966 | if (np->queue_mem == 0) { |
| 967 | tx_done_q_size = ((sizeof(struct tx_done_desc) * DONE_Q_SIZE + QUEUE_ALIGN - 1) / QUEUE_ALIGN) * QUEUE_ALIGN; |
| 968 | rx_done_q_size = ((sizeof(rx_done_desc) * DONE_Q_SIZE + QUEUE_ALIGN - 1) / QUEUE_ALIGN) * QUEUE_ALIGN; |
| 969 | tx_ring_size = ((sizeof(starfire_tx_desc) * TX_RING_SIZE + QUEUE_ALIGN - 1) / QUEUE_ALIGN) * QUEUE_ALIGN; |
| 970 | rx_ring_size = sizeof(struct starfire_rx_desc) * RX_RING_SIZE; |
| 971 | np->queue_mem_size = tx_done_q_size + rx_done_q_size + tx_ring_size + rx_ring_size; |
| 972 | np->queue_mem = pci_alloc_consistent(np->pci_dev, np->queue_mem_size, &np->queue_mem_dma); |
Alexey Dobriyan | d8840ac | 2005-10-07 02:05:23 +0400 | [diff] [blame] | 973 | if (np->queue_mem == NULL) { |
| 974 | free_irq(dev->irq, dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 975 | return -ENOMEM; |
Alexey Dobriyan | d8840ac | 2005-10-07 02:05:23 +0400 | [diff] [blame] | 976 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 977 | |
| 978 | np->tx_done_q = np->queue_mem; |
| 979 | np->tx_done_q_dma = np->queue_mem_dma; |
| 980 | np->rx_done_q = (void *) np->tx_done_q + tx_done_q_size; |
| 981 | np->rx_done_q_dma = np->tx_done_q_dma + tx_done_q_size; |
| 982 | np->tx_ring = (void *) np->rx_done_q + rx_done_q_size; |
| 983 | np->tx_ring_dma = np->rx_done_q_dma + rx_done_q_size; |
| 984 | np->rx_ring = (void *) np->tx_ring + tx_ring_size; |
| 985 | np->rx_ring_dma = np->tx_ring_dma + tx_ring_size; |
| 986 | } |
| 987 | |
| 988 | /* Start with no carrier, it gets adjusted later */ |
| 989 | netif_carrier_off(dev); |
| 990 | init_ring(dev); |
| 991 | /* Set the size of the Rx buffers. */ |
| 992 | writel((np->rx_buf_sz << RxBufferLenShift) | |
| 993 | (0 << RxMinDescrThreshShift) | |
| 994 | RxPrefetchMode | RxVariableQ | |
| 995 | RX_Q_ENTRIES | |
| 996 | RX_DESC_Q_ADDR_SIZE | RX_DESC_ADDR_SIZE | |
| 997 | RxDescSpace4, |
| 998 | ioaddr + RxDescQCtrl); |
| 999 | |
| 1000 | /* Set up the Rx DMA controller. */ |
| 1001 | writel(RxChecksumIgnore | |
| 1002 | (0 << RxEarlyIntThreshShift) | |
| 1003 | (6 << RxHighPrioThreshShift) | |
| 1004 | ((DMA_BURST_SIZE / 32) << RxBurstSizeShift), |
| 1005 | ioaddr + RxDMACtrl); |
| 1006 | |
| 1007 | /* Set Tx descriptor */ |
| 1008 | writel((2 << TxHiPriFIFOThreshShift) | |
| 1009 | (0 << TxPadLenShift) | |
| 1010 | ((DMA_BURST_SIZE / 32) << TxDMABurstSizeShift) | |
| 1011 | TX_DESC_Q_ADDR_SIZE | |
| 1012 | TX_DESC_SPACING | TX_DESC_TYPE, |
| 1013 | ioaddr + TxDescCtrl); |
| 1014 | |
| 1015 | writel( (np->queue_mem_dma >> 16) >> 16, ioaddr + RxDescQHiAddr); |
| 1016 | writel( (np->queue_mem_dma >> 16) >> 16, ioaddr + TxRingHiAddr); |
| 1017 | writel( (np->queue_mem_dma >> 16) >> 16, ioaddr + CompletionHiAddr); |
| 1018 | writel(np->rx_ring_dma, ioaddr + RxDescQAddr); |
| 1019 | writel(np->tx_ring_dma, ioaddr + TxRingPtr); |
| 1020 | |
| 1021 | writel(np->tx_done_q_dma, ioaddr + TxCompletionAddr); |
| 1022 | writel(np->rx_done_q_dma | |
| 1023 | RxComplType | |
| 1024 | (0 << RxComplThreshShift), |
| 1025 | ioaddr + RxCompletionAddr); |
| 1026 | |
| 1027 | if (debug > 1) |
| 1028 | printk(KERN_DEBUG "%s: Filling in the station address.\n", dev->name); |
| 1029 | |
| 1030 | /* Fill both the Tx SA register and the Rx perfect filter. */ |
| 1031 | for (i = 0; i < 6; i++) |
| 1032 | writeb(dev->dev_addr[i], ioaddr + TxStationAddr + 5 - i); |
| 1033 | /* The first entry is special because it bypasses the VLAN filter. |
| 1034 | Don't use it. */ |
| 1035 | writew(0, ioaddr + PerfFilterTable); |
| 1036 | writew(0, ioaddr + PerfFilterTable + 4); |
| 1037 | writew(0, ioaddr + PerfFilterTable + 8); |
| 1038 | for (i = 1; i < 16; i++) { |
| 1039 | u16 *eaddrs = (u16 *)dev->dev_addr; |
| 1040 | void __iomem *setup_frm = ioaddr + PerfFilterTable + i * 16; |
| 1041 | writew(cpu_to_be16(eaddrs[2]), setup_frm); setup_frm += 4; |
| 1042 | writew(cpu_to_be16(eaddrs[1]), setup_frm); setup_frm += 4; |
| 1043 | writew(cpu_to_be16(eaddrs[0]), setup_frm); setup_frm += 8; |
| 1044 | } |
| 1045 | |
| 1046 | /* Initialize other registers. */ |
| 1047 | /* Configure the PCI bus bursts and FIFO thresholds. */ |
| 1048 | np->tx_mode = TxFlowEnable|RxFlowEnable|PadEnable; /* modified when link is up. */ |
| 1049 | writel(MiiSoftReset | np->tx_mode, ioaddr + TxMode); |
| 1050 | udelay(1000); |
| 1051 | writel(np->tx_mode, ioaddr + TxMode); |
| 1052 | np->tx_threshold = 4; |
| 1053 | writel(np->tx_threshold, ioaddr + TxThreshold); |
| 1054 | |
| 1055 | writel(np->intr_timer_ctrl, ioaddr + IntrTimerCtrl); |
| 1056 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1057 | #ifdef HAVE_NETDEV_POLL |
| 1058 | napi_enable(&np->napi); |
| 1059 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1060 | netif_start_queue(dev); |
| 1061 | |
| 1062 | if (debug > 1) |
| 1063 | printk(KERN_DEBUG "%s: Setting the Rx and Tx modes.\n", dev->name); |
| 1064 | set_rx_mode(dev); |
| 1065 | |
| 1066 | np->mii_if.advertising = mdio_read(dev, np->phys[0], MII_ADVERTISE); |
| 1067 | check_duplex(dev); |
| 1068 | |
| 1069 | /* Enable GPIO interrupts on link change */ |
| 1070 | writel(0x0f00ff00, ioaddr + GPIOCtrl); |
| 1071 | |
| 1072 | /* Set the interrupt mask */ |
| 1073 | writel(IntrRxDone | IntrRxEmpty | IntrDMAErr | |
| 1074 | IntrTxDMADone | IntrStatsMax | IntrLinkChange | |
| 1075 | IntrRxGFPDead | IntrNoTxCsum | IntrTxBadID, |
| 1076 | ioaddr + IntrEnable); |
| 1077 | /* Enable PCI interrupts. */ |
| 1078 | writel(0x00800000 | readl(ioaddr + PCIDeviceConfig), |
| 1079 | ioaddr + PCIDeviceConfig); |
| 1080 | |
| 1081 | #ifdef VLAN_SUPPORT |
| 1082 | /* Set VLAN type to 802.1q */ |
| 1083 | writel(ETH_P_8021Q, ioaddr + VlanType); |
| 1084 | #endif /* VLAN_SUPPORT */ |
| 1085 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1086 | /* Load Rx/Tx firmware into the frame processors */ |
| 1087 | for (i = 0; i < FIRMWARE_RX_SIZE * 2; i++) |
| 1088 | writel(firmware_rx[i], ioaddr + RxGfpMem + i * 4); |
| 1089 | for (i = 0; i < FIRMWARE_TX_SIZE * 2; i++) |
| 1090 | writel(firmware_tx[i], ioaddr + TxGfpMem + i * 4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1091 | if (enable_hw_cksum) |
| 1092 | /* Enable the Rx and Tx units, and the Rx/Tx frame processors. */ |
| 1093 | writel(TxEnable|TxGFPEnable|RxEnable|RxGFPEnable, ioaddr + GenCtrl); |
| 1094 | else |
| 1095 | /* Enable the Rx and Tx units only. */ |
| 1096 | writel(TxEnable|RxEnable, ioaddr + GenCtrl); |
| 1097 | |
| 1098 | if (debug > 1) |
| 1099 | printk(KERN_DEBUG "%s: Done netdev_open().\n", |
| 1100 | dev->name); |
| 1101 | |
| 1102 | return 0; |
| 1103 | } |
| 1104 | |
| 1105 | |
| 1106 | static void check_duplex(struct net_device *dev) |
| 1107 | { |
| 1108 | struct netdev_private *np = netdev_priv(dev); |
| 1109 | u16 reg0; |
| 1110 | int silly_count = 1000; |
| 1111 | |
| 1112 | mdio_write(dev, np->phys[0], MII_ADVERTISE, np->mii_if.advertising); |
| 1113 | mdio_write(dev, np->phys[0], MII_BMCR, BMCR_RESET); |
| 1114 | udelay(500); |
| 1115 | while (--silly_count && mdio_read(dev, np->phys[0], MII_BMCR) & BMCR_RESET) |
| 1116 | /* do nothing */; |
| 1117 | if (!silly_count) { |
| 1118 | printk("%s: MII reset failed!\n", dev->name); |
| 1119 | return; |
| 1120 | } |
| 1121 | |
| 1122 | reg0 = mdio_read(dev, np->phys[0], MII_BMCR); |
| 1123 | |
| 1124 | if (!np->mii_if.force_media) { |
| 1125 | reg0 |= BMCR_ANENABLE | BMCR_ANRESTART; |
| 1126 | } else { |
| 1127 | reg0 &= ~(BMCR_ANENABLE | BMCR_ANRESTART); |
| 1128 | if (np->speed100) |
| 1129 | reg0 |= BMCR_SPEED100; |
| 1130 | if (np->mii_if.full_duplex) |
| 1131 | reg0 |= BMCR_FULLDPLX; |
| 1132 | printk(KERN_DEBUG "%s: Link forced to %sMbit %s-duplex\n", |
| 1133 | dev->name, |
| 1134 | np->speed100 ? "100" : "10", |
| 1135 | np->mii_if.full_duplex ? "full" : "half"); |
| 1136 | } |
| 1137 | mdio_write(dev, np->phys[0], MII_BMCR, reg0); |
| 1138 | } |
| 1139 | |
| 1140 | |
| 1141 | static void tx_timeout(struct net_device *dev) |
| 1142 | { |
| 1143 | struct netdev_private *np = netdev_priv(dev); |
| 1144 | void __iomem *ioaddr = np->base; |
| 1145 | int old_debug; |
| 1146 | |
| 1147 | printk(KERN_WARNING "%s: Transmit timed out, status %#8.8x, " |
| 1148 | "resetting...\n", dev->name, (int) readl(ioaddr + IntrStatus)); |
| 1149 | |
| 1150 | /* Perhaps we should reinitialize the hardware here. */ |
| 1151 | |
| 1152 | /* |
| 1153 | * Stop and restart the interface. |
| 1154 | * Cheat and increase the debug level temporarily. |
| 1155 | */ |
| 1156 | old_debug = debug; |
| 1157 | debug = 2; |
| 1158 | netdev_close(dev); |
| 1159 | netdev_open(dev); |
| 1160 | debug = old_debug; |
| 1161 | |
| 1162 | /* Trigger an immediate transmit demand. */ |
| 1163 | |
| 1164 | dev->trans_start = jiffies; |
| 1165 | np->stats.tx_errors++; |
| 1166 | netif_wake_queue(dev); |
| 1167 | } |
| 1168 | |
| 1169 | |
| 1170 | /* Initialize the Rx and Tx rings, along with various 'dev' bits. */ |
| 1171 | static void init_ring(struct net_device *dev) |
| 1172 | { |
| 1173 | struct netdev_private *np = netdev_priv(dev); |
| 1174 | int i; |
| 1175 | |
| 1176 | np->cur_rx = np->cur_tx = np->reap_tx = 0; |
| 1177 | np->dirty_rx = np->dirty_tx = np->rx_done = np->tx_done = 0; |
| 1178 | |
| 1179 | np->rx_buf_sz = (dev->mtu <= 1500 ? PKT_BUF_SZ : dev->mtu + 32); |
| 1180 | |
| 1181 | /* Fill in the Rx buffers. Handle allocation failure gracefully. */ |
| 1182 | for (i = 0; i < RX_RING_SIZE; i++) { |
| 1183 | struct sk_buff *skb = dev_alloc_skb(np->rx_buf_sz); |
| 1184 | np->rx_info[i].skb = skb; |
| 1185 | if (skb == NULL) |
| 1186 | break; |
David S. Miller | 689be43 | 2005-06-28 15:25:31 -0700 | [diff] [blame] | 1187 | np->rx_info[i].mapping = pci_map_single(np->pci_dev, skb->data, np->rx_buf_sz, PCI_DMA_FROMDEVICE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1188 | skb->dev = dev; /* Mark as being used by this device. */ |
| 1189 | /* Grrr, we cannot offset to correctly align the IP header. */ |
| 1190 | np->rx_ring[i].rxaddr = cpu_to_dma(np->rx_info[i].mapping | RxDescValid); |
| 1191 | } |
| 1192 | writew(i - 1, np->base + RxDescQIdx); |
| 1193 | np->dirty_rx = (unsigned int)(i - RX_RING_SIZE); |
| 1194 | |
| 1195 | /* Clear the remainder of the Rx buffer ring. */ |
| 1196 | for ( ; i < RX_RING_SIZE; i++) { |
| 1197 | np->rx_ring[i].rxaddr = 0; |
| 1198 | np->rx_info[i].skb = NULL; |
| 1199 | np->rx_info[i].mapping = 0; |
| 1200 | } |
| 1201 | /* Mark the last entry as wrapping the ring. */ |
| 1202 | np->rx_ring[RX_RING_SIZE - 1].rxaddr |= cpu_to_dma(RxDescEndRing); |
| 1203 | |
| 1204 | /* Clear the completion rings. */ |
| 1205 | for (i = 0; i < DONE_Q_SIZE; i++) { |
| 1206 | np->rx_done_q[i].status = 0; |
| 1207 | np->tx_done_q[i].status = 0; |
| 1208 | } |
| 1209 | |
| 1210 | for (i = 0; i < TX_RING_SIZE; i++) |
| 1211 | memset(&np->tx_info[i], 0, sizeof(np->tx_info[i])); |
| 1212 | |
| 1213 | return; |
| 1214 | } |
| 1215 | |
| 1216 | |
| 1217 | static int start_tx(struct sk_buff *skb, struct net_device *dev) |
| 1218 | { |
| 1219 | struct netdev_private *np = netdev_priv(dev); |
| 1220 | unsigned int entry; |
| 1221 | u32 status; |
| 1222 | int i; |
| 1223 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1224 | /* |
| 1225 | * be cautious here, wrapping the queue has weird semantics |
| 1226 | * and we may not have enough slots even when it seems we do. |
| 1227 | */ |
| 1228 | if ((np->cur_tx - np->dirty_tx) + skb_num_frags(skb) * 2 > TX_RING_SIZE) { |
| 1229 | netif_stop_queue(dev); |
| 1230 | return 1; |
| 1231 | } |
| 1232 | |
| 1233 | #if defined(ZEROCOPY) && defined(HAS_BROKEN_FIRMWARE) |
Patrick McHardy | 84fa793 | 2006-08-29 16:44:56 -0700 | [diff] [blame] | 1234 | if (skb->ip_summed == CHECKSUM_PARTIAL) { |
Herbert Xu | 5b057c6 | 2006-06-23 02:06:41 -0700 | [diff] [blame] | 1235 | if (skb_padto(skb, (skb->len + PADDING_MASK) & ~PADDING_MASK)) |
Ion Badulescu | 6797423 | 2005-10-03 22:31:36 -0400 | [diff] [blame] | 1236 | return NETDEV_TX_OK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1237 | } |
| 1238 | #endif /* ZEROCOPY && HAS_BROKEN_FIRMWARE */ |
| 1239 | |
| 1240 | entry = np->cur_tx % TX_RING_SIZE; |
| 1241 | for (i = 0; i < skb_num_frags(skb); i++) { |
| 1242 | int wrap_ring = 0; |
| 1243 | status = TxDescID; |
| 1244 | |
| 1245 | if (i == 0) { |
| 1246 | np->tx_info[entry].skb = skb; |
| 1247 | status |= TxCRCEn; |
| 1248 | if (entry >= TX_RING_SIZE - skb_num_frags(skb)) { |
| 1249 | status |= TxRingWrap; |
| 1250 | wrap_ring = 1; |
| 1251 | } |
| 1252 | if (np->reap_tx) { |
| 1253 | status |= TxDescIntr; |
| 1254 | np->reap_tx = 0; |
| 1255 | } |
Patrick McHardy | 84fa793 | 2006-08-29 16:44:56 -0700 | [diff] [blame] | 1256 | if (skb->ip_summed == CHECKSUM_PARTIAL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1257 | status |= TxCalTCP; |
| 1258 | np->stats.tx_compressed++; |
| 1259 | } |
| 1260 | status |= skb_first_frag_len(skb) | (skb_num_frags(skb) << 16); |
| 1261 | |
| 1262 | np->tx_info[entry].mapping = |
| 1263 | pci_map_single(np->pci_dev, skb->data, skb_first_frag_len(skb), PCI_DMA_TODEVICE); |
| 1264 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1265 | skb_frag_t *this_frag = &skb_shinfo(skb)->frags[i - 1]; |
| 1266 | status |= this_frag->size; |
| 1267 | np->tx_info[entry].mapping = |
| 1268 | pci_map_single(np->pci_dev, page_address(this_frag->page) + this_frag->page_offset, this_frag->size, PCI_DMA_TODEVICE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1269 | } |
| 1270 | |
| 1271 | np->tx_ring[entry].addr = cpu_to_dma(np->tx_info[entry].mapping); |
| 1272 | np->tx_ring[entry].status = cpu_to_le32(status); |
| 1273 | if (debug > 3) |
| 1274 | printk(KERN_DEBUG "%s: Tx #%d/#%d slot %d status %#8.8x.\n", |
| 1275 | dev->name, np->cur_tx, np->dirty_tx, |
| 1276 | entry, status); |
| 1277 | if (wrap_ring) { |
| 1278 | np->tx_info[entry].used_slots = TX_RING_SIZE - entry; |
| 1279 | np->cur_tx += np->tx_info[entry].used_slots; |
| 1280 | entry = 0; |
| 1281 | } else { |
| 1282 | np->tx_info[entry].used_slots = 1; |
| 1283 | np->cur_tx += np->tx_info[entry].used_slots; |
| 1284 | entry++; |
| 1285 | } |
| 1286 | /* scavenge the tx descriptors twice per TX_RING_SIZE */ |
| 1287 | if (np->cur_tx % (TX_RING_SIZE / 2) == 0) |
| 1288 | np->reap_tx = 1; |
| 1289 | } |
| 1290 | |
| 1291 | /* Non-x86: explicitly flush descriptor cache lines here. */ |
| 1292 | /* Ensure all descriptors are written back before the transmit is |
| 1293 | initiated. - Jes */ |
| 1294 | wmb(); |
| 1295 | |
| 1296 | /* Update the producer index. */ |
| 1297 | writel(entry * (sizeof(starfire_tx_desc) / 8), np->base + TxProducerIdx); |
| 1298 | |
| 1299 | /* 4 is arbitrary, but should be ok */ |
| 1300 | if ((np->cur_tx - np->dirty_tx) + 4 > TX_RING_SIZE) |
| 1301 | netif_stop_queue(dev); |
| 1302 | |
| 1303 | dev->trans_start = jiffies; |
| 1304 | |
| 1305 | return 0; |
| 1306 | } |
| 1307 | |
| 1308 | |
| 1309 | /* The interrupt handler does all of the Rx thread work and cleans up |
| 1310 | after the Tx thread. */ |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 1311 | static irqreturn_t intr_handler(int irq, void *dev_instance) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1312 | { |
| 1313 | struct net_device *dev = dev_instance; |
| 1314 | struct netdev_private *np = netdev_priv(dev); |
| 1315 | void __iomem *ioaddr = np->base; |
| 1316 | int boguscnt = max_interrupt_work; |
| 1317 | int consumer; |
| 1318 | int tx_status; |
| 1319 | int handled = 0; |
| 1320 | |
| 1321 | do { |
| 1322 | u32 intr_status = readl(ioaddr + IntrClear); |
| 1323 | |
| 1324 | if (debug > 4) |
| 1325 | printk(KERN_DEBUG "%s: Interrupt status %#8.8x.\n", |
| 1326 | dev->name, intr_status); |
| 1327 | |
| 1328 | if (intr_status == 0 || intr_status == (u32) -1) |
| 1329 | break; |
| 1330 | |
| 1331 | handled = 1; |
| 1332 | |
| 1333 | if (intr_status & (IntrRxDone | IntrRxEmpty)) |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1334 | netdev_rx(dev, np, ioaddr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1335 | |
| 1336 | /* Scavenge the skbuff list based on the Tx-done queue. |
| 1337 | There are redundant checks here that may be cleaned up |
| 1338 | after the driver has proven to be reliable. */ |
| 1339 | consumer = readl(ioaddr + TxConsumerIdx); |
| 1340 | if (debug > 3) |
| 1341 | printk(KERN_DEBUG "%s: Tx Consumer index is %d.\n", |
| 1342 | dev->name, consumer); |
| 1343 | |
| 1344 | while ((tx_status = le32_to_cpu(np->tx_done_q[np->tx_done].status)) != 0) { |
| 1345 | if (debug > 3) |
| 1346 | printk(KERN_DEBUG "%s: Tx completion #%d entry %d is %#8.8x.\n", |
| 1347 | dev->name, np->dirty_tx, np->tx_done, tx_status); |
| 1348 | if ((tx_status & 0xe0000000) == 0xa0000000) { |
| 1349 | np->stats.tx_packets++; |
| 1350 | } else if ((tx_status & 0xe0000000) == 0x80000000) { |
| 1351 | u16 entry = (tx_status & 0x7fff) / sizeof(starfire_tx_desc); |
| 1352 | struct sk_buff *skb = np->tx_info[entry].skb; |
| 1353 | np->tx_info[entry].skb = NULL; |
| 1354 | pci_unmap_single(np->pci_dev, |
| 1355 | np->tx_info[entry].mapping, |
| 1356 | skb_first_frag_len(skb), |
| 1357 | PCI_DMA_TODEVICE); |
| 1358 | np->tx_info[entry].mapping = 0; |
| 1359 | np->dirty_tx += np->tx_info[entry].used_slots; |
| 1360 | entry = (entry + np->tx_info[entry].used_slots) % TX_RING_SIZE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1361 | { |
| 1362 | int i; |
| 1363 | for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { |
| 1364 | pci_unmap_single(np->pci_dev, |
| 1365 | np->tx_info[entry].mapping, |
| 1366 | skb_shinfo(skb)->frags[i].size, |
| 1367 | PCI_DMA_TODEVICE); |
| 1368 | np->dirty_tx++; |
| 1369 | entry++; |
| 1370 | } |
| 1371 | } |
Jeff Garzik | fdecea6 | 2005-05-12 20:16:24 -0400 | [diff] [blame] | 1372 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1373 | dev_kfree_skb_irq(skb); |
| 1374 | } |
| 1375 | np->tx_done_q[np->tx_done].status = 0; |
| 1376 | np->tx_done = (np->tx_done + 1) % DONE_Q_SIZE; |
| 1377 | } |
| 1378 | writew(np->tx_done, ioaddr + CompletionQConsumerIdx + 2); |
| 1379 | |
| 1380 | if (netif_queue_stopped(dev) && |
| 1381 | (np->cur_tx - np->dirty_tx + 4 < TX_RING_SIZE)) { |
| 1382 | /* The ring is no longer full, wake the queue. */ |
| 1383 | netif_wake_queue(dev); |
| 1384 | } |
| 1385 | |
| 1386 | /* Stats overflow */ |
| 1387 | if (intr_status & IntrStatsMax) |
| 1388 | get_stats(dev); |
| 1389 | |
| 1390 | /* Media change interrupt. */ |
| 1391 | if (intr_status & IntrLinkChange) |
| 1392 | netdev_media_change(dev); |
| 1393 | |
| 1394 | /* Abnormal error summary/uncommon events handlers. */ |
| 1395 | if (intr_status & IntrAbnormalSummary) |
| 1396 | netdev_error(dev, intr_status); |
| 1397 | |
| 1398 | if (--boguscnt < 0) { |
| 1399 | if (debug > 1) |
| 1400 | printk(KERN_WARNING "%s: Too much work at interrupt, " |
| 1401 | "status=%#8.8x.\n", |
| 1402 | dev->name, intr_status); |
| 1403 | break; |
| 1404 | } |
| 1405 | } while (1); |
| 1406 | |
| 1407 | if (debug > 4) |
| 1408 | printk(KERN_DEBUG "%s: exiting interrupt, status=%#8.8x.\n", |
| 1409 | dev->name, (int) readl(ioaddr + IntrStatus)); |
| 1410 | return IRQ_RETVAL(handled); |
| 1411 | } |
| 1412 | |
| 1413 | |
| 1414 | /* This routine is logically part of the interrupt/poll handler, but separated |
| 1415 | for clarity, code sharing between NAPI/non-NAPI, and better register allocation. */ |
| 1416 | static int __netdev_rx(struct net_device *dev, int *quota) |
| 1417 | { |
| 1418 | struct netdev_private *np = netdev_priv(dev); |
| 1419 | u32 desc_status; |
| 1420 | int retcode = 0; |
| 1421 | |
| 1422 | /* If EOP is set on the next entry, it's a new packet. Send it up. */ |
| 1423 | while ((desc_status = le32_to_cpu(np->rx_done_q[np->rx_done].status)) != 0) { |
| 1424 | struct sk_buff *skb; |
| 1425 | u16 pkt_len; |
| 1426 | int entry; |
| 1427 | rx_done_desc *desc = &np->rx_done_q[np->rx_done]; |
| 1428 | |
| 1429 | if (debug > 4) |
| 1430 | printk(KERN_DEBUG " netdev_rx() status of %d was %#8.8x.\n", np->rx_done, desc_status); |
| 1431 | if (!(desc_status & RxOK)) { |
Jeff Garzik | fdecea6 | 2005-05-12 20:16:24 -0400 | [diff] [blame] | 1432 | /* There was an error. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1433 | if (debug > 2) |
| 1434 | printk(KERN_DEBUG " netdev_rx() Rx error was %#8.8x.\n", desc_status); |
| 1435 | np->stats.rx_errors++; |
| 1436 | if (desc_status & RxFIFOErr) |
| 1437 | np->stats.rx_fifo_errors++; |
| 1438 | goto next_rx; |
| 1439 | } |
| 1440 | |
| 1441 | if (*quota <= 0) { /* out of rx quota */ |
| 1442 | retcode = 1; |
| 1443 | goto out; |
| 1444 | } |
| 1445 | (*quota)--; |
| 1446 | |
| 1447 | pkt_len = desc_status; /* Implicitly Truncate */ |
| 1448 | entry = (desc_status >> 16) & 0x7ff; |
| 1449 | |
| 1450 | if (debug > 4) |
| 1451 | printk(KERN_DEBUG " netdev_rx() normal Rx pkt length %d, quota %d.\n", pkt_len, *quota); |
| 1452 | /* Check if the packet is long enough to accept without copying |
| 1453 | to a minimally-sized skbuff. */ |
| 1454 | if (pkt_len < rx_copybreak |
| 1455 | && (skb = dev_alloc_skb(pkt_len + 2)) != NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1456 | skb_reserve(skb, 2); /* 16 byte align the IP header */ |
| 1457 | pci_dma_sync_single_for_cpu(np->pci_dev, |
| 1458 | np->rx_info[entry].mapping, |
| 1459 | pkt_len, PCI_DMA_FROMDEVICE); |
David S. Miller | 8c7b7fa | 2007-07-10 22:08:12 -0700 | [diff] [blame] | 1460 | skb_copy_to_linear_data(skb, np->rx_info[entry].skb->data, pkt_len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1461 | pci_dma_sync_single_for_device(np->pci_dev, |
| 1462 | np->rx_info[entry].mapping, |
| 1463 | pkt_len, PCI_DMA_FROMDEVICE); |
| 1464 | skb_put(skb, pkt_len); |
| 1465 | } else { |
| 1466 | pci_unmap_single(np->pci_dev, np->rx_info[entry].mapping, np->rx_buf_sz, PCI_DMA_FROMDEVICE); |
| 1467 | skb = np->rx_info[entry].skb; |
| 1468 | skb_put(skb, pkt_len); |
| 1469 | np->rx_info[entry].skb = NULL; |
| 1470 | np->rx_info[entry].mapping = 0; |
| 1471 | } |
| 1472 | #ifndef final_version /* Remove after testing. */ |
| 1473 | /* You will want this info for the initial debug. */ |
Joe Perches | 0795af5 | 2007-10-03 17:59:30 -0700 | [diff] [blame] | 1474 | if (debug > 5) { |
| 1475 | DECLARE_MAC_BUF(mac); |
| 1476 | DECLARE_MAC_BUF(mac2); |
| 1477 | |
| 1478 | printk(KERN_DEBUG " Rx data %s %s" |
| 1479 | " %2.2x%2.2x.\n", |
| 1480 | print_mac(mac, &skb->data[0]), |
| 1481 | print_mac(mac2, &skb->data[6]), |
| 1482 | skb->data[12], skb->data[13]); |
| 1483 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1484 | #endif |
| 1485 | |
| 1486 | skb->protocol = eth_type_trans(skb, dev); |
Jeff Garzik | fdecea6 | 2005-05-12 20:16:24 -0400 | [diff] [blame] | 1487 | #ifdef VLAN_SUPPORT |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1488 | if (debug > 4) |
| 1489 | printk(KERN_DEBUG " netdev_rx() status2 of %d was %#4.4x.\n", np->rx_done, le16_to_cpu(desc->status2)); |
| 1490 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1491 | if (le16_to_cpu(desc->status2) & 0x0100) { |
| 1492 | skb->ip_summed = CHECKSUM_UNNECESSARY; |
| 1493 | np->stats.rx_compressed++; |
| 1494 | } |
| 1495 | /* |
| 1496 | * This feature doesn't seem to be working, at least |
| 1497 | * with the two firmware versions I have. If the GFP sees |
| 1498 | * an IP fragment, it either ignores it completely, or reports |
| 1499 | * "bad checksum" on it. |
| 1500 | * |
| 1501 | * Maybe I missed something -- corrections are welcome. |
| 1502 | * Until then, the printk stays. :-) -Ion |
| 1503 | */ |
| 1504 | else if (le16_to_cpu(desc->status2) & 0x0040) { |
Patrick McHardy | 84fa793 | 2006-08-29 16:44:56 -0700 | [diff] [blame] | 1505 | skb->ip_summed = CHECKSUM_COMPLETE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1506 | skb->csum = le16_to_cpu(desc->csum); |
| 1507 | printk(KERN_DEBUG "%s: checksum_hw, status2 = %#x\n", dev->name, le16_to_cpu(desc->status2)); |
| 1508 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1509 | #ifdef VLAN_SUPPORT |
| 1510 | if (np->vlgrp && le16_to_cpu(desc->status2) & 0x0200) { |
| 1511 | if (debug > 4) |
| 1512 | printk(KERN_DEBUG " netdev_rx() vlanid = %d\n", le16_to_cpu(desc->vlanid)); |
| 1513 | /* vlan_netdev_receive_skb() expects a packet with the VLAN tag stripped out */ |
| 1514 | vlan_netdev_receive_skb(skb, np->vlgrp, le16_to_cpu(desc->vlanid) & VLAN_VID_MASK); |
| 1515 | } else |
| 1516 | #endif /* VLAN_SUPPORT */ |
| 1517 | netdev_receive_skb(skb); |
| 1518 | dev->last_rx = jiffies; |
| 1519 | np->stats.rx_packets++; |
| 1520 | |
| 1521 | next_rx: |
| 1522 | np->cur_rx++; |
| 1523 | desc->status = 0; |
| 1524 | np->rx_done = (np->rx_done + 1) % DONE_Q_SIZE; |
| 1525 | } |
| 1526 | writew(np->rx_done, np->base + CompletionQConsumerIdx); |
| 1527 | |
| 1528 | out: |
| 1529 | refill_rx_ring(dev); |
| 1530 | if (debug > 5) |
| 1531 | printk(KERN_DEBUG " exiting netdev_rx(): %d, status of %d was %#8.8x.\n", |
| 1532 | retcode, np->rx_done, desc_status); |
| 1533 | return retcode; |
| 1534 | } |
| 1535 | |
| 1536 | |
| 1537 | #ifdef HAVE_NETDEV_POLL |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1538 | static int netdev_poll(struct napi_struct *napi, int budget) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1539 | { |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1540 | struct netdev_private *np = container_of(napi, struct netdev_private, napi); |
| 1541 | struct net_device *dev = np->dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1542 | u32 intr_status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1543 | void __iomem *ioaddr = np->base; |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1544 | int quota = budget; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1545 | |
| 1546 | do { |
| 1547 | writel(IntrRxDone | IntrRxEmpty, ioaddr + IntrClear); |
| 1548 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1549 | if (__netdev_rx(dev, "a)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1550 | goto out; |
| 1551 | |
| 1552 | intr_status = readl(ioaddr + IntrStatus); |
| 1553 | } while (intr_status & (IntrRxDone | IntrRxEmpty)); |
| 1554 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1555 | netif_rx_complete(dev, napi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1556 | intr_status = readl(ioaddr + IntrEnable); |
| 1557 | intr_status |= IntrRxDone | IntrRxEmpty; |
| 1558 | writel(intr_status, ioaddr + IntrEnable); |
| 1559 | |
| 1560 | out: |
| 1561 | if (debug > 5) |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1562 | printk(KERN_DEBUG " exiting netdev_poll(): %d.\n", |
| 1563 | budget - quota); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1564 | |
| 1565 | /* Restart Rx engine if stopped. */ |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1566 | return budget - quota; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1567 | } |
| 1568 | #endif /* HAVE_NETDEV_POLL */ |
| 1569 | |
| 1570 | |
| 1571 | static void refill_rx_ring(struct net_device *dev) |
| 1572 | { |
| 1573 | struct netdev_private *np = netdev_priv(dev); |
| 1574 | struct sk_buff *skb; |
| 1575 | int entry = -1; |
| 1576 | |
| 1577 | /* Refill the Rx ring buffers. */ |
| 1578 | for (; np->cur_rx - np->dirty_rx > 0; np->dirty_rx++) { |
| 1579 | entry = np->dirty_rx % RX_RING_SIZE; |
| 1580 | if (np->rx_info[entry].skb == NULL) { |
| 1581 | skb = dev_alloc_skb(np->rx_buf_sz); |
| 1582 | np->rx_info[entry].skb = skb; |
| 1583 | if (skb == NULL) |
| 1584 | break; /* Better luck next round. */ |
| 1585 | np->rx_info[entry].mapping = |
David S. Miller | 689be43 | 2005-06-28 15:25:31 -0700 | [diff] [blame] | 1586 | pci_map_single(np->pci_dev, skb->data, np->rx_buf_sz, PCI_DMA_FROMDEVICE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1587 | skb->dev = dev; /* Mark as being used by this device. */ |
| 1588 | np->rx_ring[entry].rxaddr = |
| 1589 | cpu_to_dma(np->rx_info[entry].mapping | RxDescValid); |
| 1590 | } |
| 1591 | if (entry == RX_RING_SIZE - 1) |
| 1592 | np->rx_ring[entry].rxaddr |= cpu_to_dma(RxDescEndRing); |
| 1593 | } |
| 1594 | if (entry >= 0) |
| 1595 | writew(entry, np->base + RxDescQIdx); |
| 1596 | } |
| 1597 | |
| 1598 | |
| 1599 | static void netdev_media_change(struct net_device *dev) |
| 1600 | { |
| 1601 | struct netdev_private *np = netdev_priv(dev); |
| 1602 | void __iomem *ioaddr = np->base; |
| 1603 | u16 reg0, reg1, reg4, reg5; |
| 1604 | u32 new_tx_mode; |
| 1605 | u32 new_intr_timer_ctrl; |
| 1606 | |
| 1607 | /* reset status first */ |
| 1608 | mdio_read(dev, np->phys[0], MII_BMCR); |
| 1609 | mdio_read(dev, np->phys[0], MII_BMSR); |
| 1610 | |
| 1611 | reg0 = mdio_read(dev, np->phys[0], MII_BMCR); |
| 1612 | reg1 = mdio_read(dev, np->phys[0], MII_BMSR); |
| 1613 | |
| 1614 | if (reg1 & BMSR_LSTATUS) { |
| 1615 | /* link is up */ |
| 1616 | if (reg0 & BMCR_ANENABLE) { |
| 1617 | /* autonegotiation is enabled */ |
| 1618 | reg4 = mdio_read(dev, np->phys[0], MII_ADVERTISE); |
| 1619 | reg5 = mdio_read(dev, np->phys[0], MII_LPA); |
| 1620 | if (reg4 & ADVERTISE_100FULL && reg5 & LPA_100FULL) { |
| 1621 | np->speed100 = 1; |
| 1622 | np->mii_if.full_duplex = 1; |
| 1623 | } else if (reg4 & ADVERTISE_100HALF && reg5 & LPA_100HALF) { |
| 1624 | np->speed100 = 1; |
| 1625 | np->mii_if.full_duplex = 0; |
| 1626 | } else if (reg4 & ADVERTISE_10FULL && reg5 & LPA_10FULL) { |
| 1627 | np->speed100 = 0; |
| 1628 | np->mii_if.full_duplex = 1; |
| 1629 | } else { |
| 1630 | np->speed100 = 0; |
| 1631 | np->mii_if.full_duplex = 0; |
| 1632 | } |
| 1633 | } else { |
| 1634 | /* autonegotiation is disabled */ |
| 1635 | if (reg0 & BMCR_SPEED100) |
| 1636 | np->speed100 = 1; |
| 1637 | else |
| 1638 | np->speed100 = 0; |
| 1639 | if (reg0 & BMCR_FULLDPLX) |
| 1640 | np->mii_if.full_duplex = 1; |
| 1641 | else |
| 1642 | np->mii_if.full_duplex = 0; |
| 1643 | } |
| 1644 | netif_carrier_on(dev); |
| 1645 | printk(KERN_DEBUG "%s: Link is up, running at %sMbit %s-duplex\n", |
| 1646 | dev->name, |
| 1647 | np->speed100 ? "100" : "10", |
| 1648 | np->mii_if.full_duplex ? "full" : "half"); |
| 1649 | |
| 1650 | new_tx_mode = np->tx_mode & ~FullDuplex; /* duplex setting */ |
| 1651 | if (np->mii_if.full_duplex) |
| 1652 | new_tx_mode |= FullDuplex; |
| 1653 | if (np->tx_mode != new_tx_mode) { |
| 1654 | np->tx_mode = new_tx_mode; |
| 1655 | writel(np->tx_mode | MiiSoftReset, ioaddr + TxMode); |
| 1656 | udelay(1000); |
| 1657 | writel(np->tx_mode, ioaddr + TxMode); |
| 1658 | } |
| 1659 | |
| 1660 | new_intr_timer_ctrl = np->intr_timer_ctrl & ~Timer10X; |
| 1661 | if (np->speed100) |
| 1662 | new_intr_timer_ctrl |= Timer10X; |
| 1663 | if (np->intr_timer_ctrl != new_intr_timer_ctrl) { |
| 1664 | np->intr_timer_ctrl = new_intr_timer_ctrl; |
| 1665 | writel(new_intr_timer_ctrl, ioaddr + IntrTimerCtrl); |
| 1666 | } |
| 1667 | } else { |
| 1668 | netif_carrier_off(dev); |
| 1669 | printk(KERN_DEBUG "%s: Link is down\n", dev->name); |
| 1670 | } |
| 1671 | } |
| 1672 | |
| 1673 | |
| 1674 | static void netdev_error(struct net_device *dev, int intr_status) |
| 1675 | { |
| 1676 | struct netdev_private *np = netdev_priv(dev); |
| 1677 | |
| 1678 | /* Came close to underrunning the Tx FIFO, increase threshold. */ |
| 1679 | if (intr_status & IntrTxDataLow) { |
| 1680 | if (np->tx_threshold <= PKT_BUF_SZ / 16) { |
| 1681 | writel(++np->tx_threshold, np->base + TxThreshold); |
| 1682 | printk(KERN_NOTICE "%s: PCI bus congestion, increasing Tx FIFO threshold to %d bytes\n", |
| 1683 | dev->name, np->tx_threshold * 16); |
| 1684 | } else |
| 1685 | printk(KERN_WARNING "%s: PCI Tx underflow -- adapter is probably malfunctioning\n", dev->name); |
| 1686 | } |
| 1687 | if (intr_status & IntrRxGFPDead) { |
| 1688 | np->stats.rx_fifo_errors++; |
| 1689 | np->stats.rx_errors++; |
| 1690 | } |
| 1691 | if (intr_status & (IntrNoTxCsum | IntrDMAErr)) { |
| 1692 | np->stats.tx_fifo_errors++; |
| 1693 | np->stats.tx_errors++; |
| 1694 | } |
| 1695 | if ((intr_status & ~(IntrNormalMask | IntrAbnormalSummary | IntrLinkChange | IntrStatsMax | IntrTxDataLow | IntrRxGFPDead | IntrNoTxCsum | IntrPCIPad)) && debug) |
| 1696 | printk(KERN_ERR "%s: Something Wicked happened! %#8.8x.\n", |
| 1697 | dev->name, intr_status); |
| 1698 | } |
| 1699 | |
| 1700 | |
| 1701 | static struct net_device_stats *get_stats(struct net_device *dev) |
| 1702 | { |
| 1703 | struct netdev_private *np = netdev_priv(dev); |
| 1704 | void __iomem *ioaddr = np->base; |
| 1705 | |
| 1706 | /* This adapter architecture needs no SMP locks. */ |
| 1707 | np->stats.tx_bytes = readl(ioaddr + 0x57010); |
| 1708 | np->stats.rx_bytes = readl(ioaddr + 0x57044); |
| 1709 | np->stats.tx_packets = readl(ioaddr + 0x57000); |
| 1710 | np->stats.tx_aborted_errors = |
| 1711 | readl(ioaddr + 0x57024) + readl(ioaddr + 0x57028); |
| 1712 | np->stats.tx_window_errors = readl(ioaddr + 0x57018); |
| 1713 | np->stats.collisions = |
| 1714 | readl(ioaddr + 0x57004) + readl(ioaddr + 0x57008); |
| 1715 | |
| 1716 | /* The chip only need report frame silently dropped. */ |
| 1717 | np->stats.rx_dropped += readw(ioaddr + RxDMAStatus); |
| 1718 | writew(0, ioaddr + RxDMAStatus); |
| 1719 | np->stats.rx_crc_errors = readl(ioaddr + 0x5703C); |
| 1720 | np->stats.rx_frame_errors = readl(ioaddr + 0x57040); |
| 1721 | np->stats.rx_length_errors = readl(ioaddr + 0x57058); |
| 1722 | np->stats.rx_missed_errors = readl(ioaddr + 0x5707C); |
| 1723 | |
| 1724 | return &np->stats; |
| 1725 | } |
| 1726 | |
| 1727 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1728 | static void set_rx_mode(struct net_device *dev) |
| 1729 | { |
| 1730 | struct netdev_private *np = netdev_priv(dev); |
| 1731 | void __iomem *ioaddr = np->base; |
| 1732 | u32 rx_mode = MinVLANPrio; |
| 1733 | struct dev_mc_list *mclist; |
| 1734 | int i; |
| 1735 | #ifdef VLAN_SUPPORT |
| 1736 | |
| 1737 | rx_mode |= VlanMode; |
| 1738 | if (np->vlgrp) { |
| 1739 | int vlan_count = 0; |
| 1740 | void __iomem *filter_addr = ioaddr + HashTable + 8; |
| 1741 | for (i = 0; i < VLAN_VID_MASK; i++) { |
Dan Aloni | 5c15bde | 2007-03-02 20:44:51 -0800 | [diff] [blame] | 1742 | if (vlan_group_get_device(np->vlgrp, i)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1743 | if (vlan_count >= 32) |
| 1744 | break; |
| 1745 | writew(cpu_to_be16(i), filter_addr); |
| 1746 | filter_addr += 16; |
| 1747 | vlan_count++; |
| 1748 | } |
| 1749 | } |
| 1750 | if (i == VLAN_VID_MASK) { |
| 1751 | rx_mode |= PerfectFilterVlan; |
| 1752 | while (vlan_count < 32) { |
| 1753 | writew(0, filter_addr); |
| 1754 | filter_addr += 16; |
| 1755 | vlan_count++; |
| 1756 | } |
| 1757 | } |
| 1758 | } |
| 1759 | #endif /* VLAN_SUPPORT */ |
| 1760 | |
| 1761 | if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */ |
| 1762 | rx_mode |= AcceptAll; |
| 1763 | } else if ((dev->mc_count > multicast_filter_limit) |
| 1764 | || (dev->flags & IFF_ALLMULTI)) { |
| 1765 | /* Too many to match, or accept all multicasts. */ |
| 1766 | rx_mode |= AcceptBroadcast|AcceptAllMulticast|PerfectFilter; |
| 1767 | } else if (dev->mc_count <= 14) { |
| 1768 | /* Use the 16 element perfect filter, skip first two entries. */ |
| 1769 | void __iomem *filter_addr = ioaddr + PerfFilterTable + 2 * 16; |
| 1770 | u16 *eaddrs; |
| 1771 | for (i = 2, mclist = dev->mc_list; mclist && i < dev->mc_count + 2; |
| 1772 | i++, mclist = mclist->next) { |
| 1773 | eaddrs = (u16 *)mclist->dmi_addr; |
| 1774 | writew(cpu_to_be16(eaddrs[2]), filter_addr); filter_addr += 4; |
| 1775 | writew(cpu_to_be16(eaddrs[1]), filter_addr); filter_addr += 4; |
| 1776 | writew(cpu_to_be16(eaddrs[0]), filter_addr); filter_addr += 8; |
| 1777 | } |
| 1778 | eaddrs = (u16 *)dev->dev_addr; |
| 1779 | while (i++ < 16) { |
| 1780 | writew(cpu_to_be16(eaddrs[0]), filter_addr); filter_addr += 4; |
| 1781 | writew(cpu_to_be16(eaddrs[1]), filter_addr); filter_addr += 4; |
| 1782 | writew(cpu_to_be16(eaddrs[2]), filter_addr); filter_addr += 8; |
| 1783 | } |
| 1784 | rx_mode |= AcceptBroadcast|PerfectFilter; |
| 1785 | } else { |
| 1786 | /* Must use a multicast hash table. */ |
| 1787 | void __iomem *filter_addr; |
| 1788 | u16 *eaddrs; |
| 1789 | u16 mc_filter[32] __attribute__ ((aligned(sizeof(long)))); /* Multicast hash filter */ |
| 1790 | |
| 1791 | memset(mc_filter, 0, sizeof(mc_filter)); |
| 1792 | for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count; |
| 1793 | i++, mclist = mclist->next) { |
Jeff Garzik | fdecea6 | 2005-05-12 20:16:24 -0400 | [diff] [blame] | 1794 | /* The chip uses the upper 9 CRC bits |
| 1795 | as index into the hash table */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1796 | int bit_nr = ether_crc_le(ETH_ALEN, mclist->dmi_addr) >> 23; |
| 1797 | __u32 *fptr = (__u32 *) &mc_filter[(bit_nr >> 4) & ~1]; |
| 1798 | |
| 1799 | *fptr |= cpu_to_le32(1 << (bit_nr & 31)); |
| 1800 | } |
| 1801 | /* Clear the perfect filter list, skip first two entries. */ |
| 1802 | filter_addr = ioaddr + PerfFilterTable + 2 * 16; |
| 1803 | eaddrs = (u16 *)dev->dev_addr; |
| 1804 | for (i = 2; i < 16; i++) { |
| 1805 | writew(cpu_to_be16(eaddrs[0]), filter_addr); filter_addr += 4; |
| 1806 | writew(cpu_to_be16(eaddrs[1]), filter_addr); filter_addr += 4; |
| 1807 | writew(cpu_to_be16(eaddrs[2]), filter_addr); filter_addr += 8; |
| 1808 | } |
| 1809 | for (filter_addr = ioaddr + HashTable, i = 0; i < 32; filter_addr+= 16, i++) |
| 1810 | writew(mc_filter[i], filter_addr); |
| 1811 | rx_mode |= AcceptBroadcast|PerfectFilter|HashFilter; |
| 1812 | } |
| 1813 | writel(rx_mode, ioaddr + RxFilterMode); |
| 1814 | } |
| 1815 | |
| 1816 | static int check_if_running(struct net_device *dev) |
| 1817 | { |
| 1818 | if (!netif_running(dev)) |
| 1819 | return -EINVAL; |
| 1820 | return 0; |
| 1821 | } |
| 1822 | |
| 1823 | static void get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info) |
| 1824 | { |
| 1825 | struct netdev_private *np = netdev_priv(dev); |
| 1826 | strcpy(info->driver, DRV_NAME); |
| 1827 | strcpy(info->version, DRV_VERSION); |
Jeff Garzik | fdecea6 | 2005-05-12 20:16:24 -0400 | [diff] [blame] | 1828 | strcpy(info->bus_info, pci_name(np->pci_dev)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1829 | } |
| 1830 | |
| 1831 | static int get_settings(struct net_device *dev, struct ethtool_cmd *ecmd) |
| 1832 | { |
| 1833 | struct netdev_private *np = netdev_priv(dev); |
| 1834 | spin_lock_irq(&np->lock); |
| 1835 | mii_ethtool_gset(&np->mii_if, ecmd); |
| 1836 | spin_unlock_irq(&np->lock); |
| 1837 | return 0; |
| 1838 | } |
| 1839 | |
| 1840 | static int set_settings(struct net_device *dev, struct ethtool_cmd *ecmd) |
| 1841 | { |
| 1842 | struct netdev_private *np = netdev_priv(dev); |
| 1843 | int res; |
| 1844 | spin_lock_irq(&np->lock); |
| 1845 | res = mii_ethtool_sset(&np->mii_if, ecmd); |
| 1846 | spin_unlock_irq(&np->lock); |
| 1847 | check_duplex(dev); |
| 1848 | return res; |
| 1849 | } |
| 1850 | |
| 1851 | static int nway_reset(struct net_device *dev) |
| 1852 | { |
| 1853 | struct netdev_private *np = netdev_priv(dev); |
| 1854 | return mii_nway_restart(&np->mii_if); |
| 1855 | } |
| 1856 | |
| 1857 | static u32 get_link(struct net_device *dev) |
| 1858 | { |
| 1859 | struct netdev_private *np = netdev_priv(dev); |
| 1860 | return mii_link_ok(&np->mii_if); |
| 1861 | } |
| 1862 | |
| 1863 | static u32 get_msglevel(struct net_device *dev) |
| 1864 | { |
| 1865 | return debug; |
| 1866 | } |
| 1867 | |
| 1868 | static void set_msglevel(struct net_device *dev, u32 val) |
| 1869 | { |
| 1870 | debug = val; |
| 1871 | } |
| 1872 | |
Jeff Garzik | 7282d49 | 2006-09-13 14:30:00 -0400 | [diff] [blame] | 1873 | static const struct ethtool_ops ethtool_ops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1874 | .begin = check_if_running, |
| 1875 | .get_drvinfo = get_drvinfo, |
| 1876 | .get_settings = get_settings, |
| 1877 | .set_settings = set_settings, |
| 1878 | .nway_reset = nway_reset, |
| 1879 | .get_link = get_link, |
| 1880 | .get_msglevel = get_msglevel, |
| 1881 | .set_msglevel = set_msglevel, |
| 1882 | }; |
| 1883 | |
| 1884 | static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) |
| 1885 | { |
| 1886 | struct netdev_private *np = netdev_priv(dev); |
| 1887 | struct mii_ioctl_data *data = if_mii(rq); |
| 1888 | int rc; |
| 1889 | |
| 1890 | if (!netif_running(dev)) |
| 1891 | return -EINVAL; |
| 1892 | |
| 1893 | spin_lock_irq(&np->lock); |
| 1894 | rc = generic_mii_ioctl(&np->mii_if, data, cmd, NULL); |
| 1895 | spin_unlock_irq(&np->lock); |
| 1896 | |
| 1897 | if ((cmd == SIOCSMIIREG) && (data->phy_id == np->phys[0])) |
| 1898 | check_duplex(dev); |
| 1899 | |
| 1900 | return rc; |
| 1901 | } |
| 1902 | |
| 1903 | static int netdev_close(struct net_device *dev) |
| 1904 | { |
| 1905 | struct netdev_private *np = netdev_priv(dev); |
| 1906 | void __iomem *ioaddr = np->base; |
| 1907 | int i; |
| 1908 | |
| 1909 | netif_stop_queue(dev); |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1910 | #ifdef HAVE_NETDEV_POLL |
| 1911 | napi_disable(&np->napi); |
| 1912 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1913 | |
| 1914 | if (debug > 1) { |
| 1915 | printk(KERN_DEBUG "%s: Shutting down ethercard, Intr status %#8.8x.\n", |
| 1916 | dev->name, (int) readl(ioaddr + IntrStatus)); |
| 1917 | printk(KERN_DEBUG "%s: Queue pointers were Tx %d / %d, Rx %d / %d.\n", |
| 1918 | dev->name, np->cur_tx, np->dirty_tx, |
| 1919 | np->cur_rx, np->dirty_rx); |
| 1920 | } |
| 1921 | |
| 1922 | /* Disable interrupts by clearing the interrupt mask. */ |
| 1923 | writel(0, ioaddr + IntrEnable); |
| 1924 | |
| 1925 | /* Stop the chip's Tx and Rx processes. */ |
| 1926 | writel(0, ioaddr + GenCtrl); |
| 1927 | readl(ioaddr + GenCtrl); |
| 1928 | |
| 1929 | if (debug > 5) { |
| 1930 | printk(KERN_DEBUG" Tx ring at %#llx:\n", |
| 1931 | (long long) np->tx_ring_dma); |
| 1932 | for (i = 0; i < 8 /* TX_RING_SIZE is huge! */; i++) |
| 1933 | printk(KERN_DEBUG " #%d desc. %#8.8x %#llx -> %#8.8x.\n", |
| 1934 | i, le32_to_cpu(np->tx_ring[i].status), |
| 1935 | (long long) dma_to_cpu(np->tx_ring[i].addr), |
| 1936 | le32_to_cpu(np->tx_done_q[i].status)); |
| 1937 | printk(KERN_DEBUG " Rx ring at %#llx -> %p:\n", |
| 1938 | (long long) np->rx_ring_dma, np->rx_done_q); |
| 1939 | if (np->rx_done_q) |
| 1940 | for (i = 0; i < 8 /* RX_RING_SIZE */; i++) { |
| 1941 | printk(KERN_DEBUG " #%d desc. %#llx -> %#8.8x\n", |
| 1942 | i, (long long) dma_to_cpu(np->rx_ring[i].rxaddr), le32_to_cpu(np->rx_done_q[i].status)); |
| 1943 | } |
| 1944 | } |
| 1945 | |
| 1946 | free_irq(dev->irq, dev); |
| 1947 | |
| 1948 | /* Free all the skbuffs in the Rx queue. */ |
| 1949 | for (i = 0; i < RX_RING_SIZE; i++) { |
| 1950 | np->rx_ring[i].rxaddr = cpu_to_dma(0xBADF00D0); /* An invalid address. */ |
| 1951 | if (np->rx_info[i].skb != NULL) { |
| 1952 | pci_unmap_single(np->pci_dev, np->rx_info[i].mapping, np->rx_buf_sz, PCI_DMA_FROMDEVICE); |
| 1953 | dev_kfree_skb(np->rx_info[i].skb); |
| 1954 | } |
| 1955 | np->rx_info[i].skb = NULL; |
| 1956 | np->rx_info[i].mapping = 0; |
| 1957 | } |
| 1958 | for (i = 0; i < TX_RING_SIZE; i++) { |
| 1959 | struct sk_buff *skb = np->tx_info[i].skb; |
| 1960 | if (skb == NULL) |
| 1961 | continue; |
| 1962 | pci_unmap_single(np->pci_dev, |
| 1963 | np->tx_info[i].mapping, |
| 1964 | skb_first_frag_len(skb), PCI_DMA_TODEVICE); |
| 1965 | np->tx_info[i].mapping = 0; |
| 1966 | dev_kfree_skb(skb); |
| 1967 | np->tx_info[i].skb = NULL; |
| 1968 | } |
| 1969 | |
| 1970 | return 0; |
| 1971 | } |
| 1972 | |
Stefan Rompf | d4fbeab | 2006-01-17 22:52:51 +0100 | [diff] [blame] | 1973 | #ifdef CONFIG_PM |
| 1974 | static int starfire_suspend(struct pci_dev *pdev, pm_message_t state) |
| 1975 | { |
| 1976 | struct net_device *dev = pci_get_drvdata(pdev); |
| 1977 | |
| 1978 | if (netif_running(dev)) { |
| 1979 | netif_device_detach(dev); |
| 1980 | netdev_close(dev); |
| 1981 | } |
| 1982 | |
| 1983 | pci_save_state(pdev); |
| 1984 | pci_set_power_state(pdev, pci_choose_state(pdev,state)); |
| 1985 | |
| 1986 | return 0; |
| 1987 | } |
| 1988 | |
| 1989 | static int starfire_resume(struct pci_dev *pdev) |
| 1990 | { |
| 1991 | struct net_device *dev = pci_get_drvdata(pdev); |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 1992 | |
Stefan Rompf | d4fbeab | 2006-01-17 22:52:51 +0100 | [diff] [blame] | 1993 | pci_set_power_state(pdev, PCI_D0); |
| 1994 | pci_restore_state(pdev); |
| 1995 | |
| 1996 | if (netif_running(dev)) { |
| 1997 | netdev_open(dev); |
| 1998 | netif_device_attach(dev); |
| 1999 | } |
| 2000 | |
| 2001 | return 0; |
| 2002 | } |
| 2003 | #endif /* CONFIG_PM */ |
| 2004 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2005 | |
| 2006 | static void __devexit starfire_remove_one (struct pci_dev *pdev) |
| 2007 | { |
| 2008 | struct net_device *dev = pci_get_drvdata(pdev); |
| 2009 | struct netdev_private *np = netdev_priv(dev); |
| 2010 | |
Eric Sesterhenn | 5d9428d | 2006-04-02 13:52:48 +0200 | [diff] [blame] | 2011 | BUG_ON(!dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2012 | |
| 2013 | unregister_netdev(dev); |
| 2014 | |
| 2015 | if (np->queue_mem) |
| 2016 | pci_free_consistent(pdev, np->queue_mem_size, np->queue_mem, np->queue_mem_dma); |
| 2017 | |
| 2018 | |
| 2019 | /* XXX: add wakeup code -- requires firmware for MagicPacket */ |
| 2020 | pci_set_power_state(pdev, PCI_D3hot); /* go to sleep in D3 mode */ |
| 2021 | pci_disable_device(pdev); |
| 2022 | |
| 2023 | iounmap(np->base); |
| 2024 | pci_release_regions(pdev); |
| 2025 | |
| 2026 | pci_set_drvdata(pdev, NULL); |
| 2027 | free_netdev(dev); /* Will also free np!! */ |
| 2028 | } |
| 2029 | |
| 2030 | |
| 2031 | static struct pci_driver starfire_driver = { |
| 2032 | .name = DRV_NAME, |
| 2033 | .probe = starfire_init_one, |
| 2034 | .remove = __devexit_p(starfire_remove_one), |
Stefan Rompf | d4fbeab | 2006-01-17 22:52:51 +0100 | [diff] [blame] | 2035 | #ifdef CONFIG_PM |
| 2036 | .suspend = starfire_suspend, |
| 2037 | .resume = starfire_resume, |
| 2038 | #endif /* CONFIG_PM */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2039 | .id_table = starfire_pci_tbl, |
| 2040 | }; |
| 2041 | |
| 2042 | |
| 2043 | static int __init starfire_init (void) |
| 2044 | { |
| 2045 | /* when a module, this is printed whether or not devices are found in probe */ |
| 2046 | #ifdef MODULE |
| 2047 | printk(version); |
Jeff Garzik | fdecea6 | 2005-05-12 20:16:24 -0400 | [diff] [blame] | 2048 | #ifdef HAVE_NETDEV_POLL |
| 2049 | printk(KERN_INFO DRV_NAME ": polling (NAPI) enabled\n"); |
| 2050 | #else |
| 2051 | printk(KERN_INFO DRV_NAME ": polling (NAPI) disabled\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2052 | #endif |
Jeff Garzik | fdecea6 | 2005-05-12 20:16:24 -0400 | [diff] [blame] | 2053 | #endif |
| 2054 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2055 | /* we can do this test only at run-time... sigh */ |
Ion Badulescu | 6797423 | 2005-10-03 22:31:36 -0400 | [diff] [blame] | 2056 | if (sizeof(dma_addr_t) != sizeof(netdrv_addr_t)) { |
| 2057 | printk("This driver has dma_addr_t issues, please send email to maintainer\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2058 | return -ENODEV; |
| 2059 | } |
Ion Badulescu | 6797423 | 2005-10-03 22:31:36 -0400 | [diff] [blame] | 2060 | |
Jeff Garzik | 2991762 | 2006-08-19 17:48:59 -0400 | [diff] [blame] | 2061 | return pci_register_driver(&starfire_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2062 | } |
| 2063 | |
| 2064 | |
| 2065 | static void __exit starfire_cleanup (void) |
| 2066 | { |
| 2067 | pci_unregister_driver (&starfire_driver); |
| 2068 | } |
| 2069 | |
| 2070 | |
| 2071 | module_init(starfire_init); |
| 2072 | module_exit(starfire_cleanup); |
| 2073 | |
| 2074 | |
| 2075 | /* |
| 2076 | * Local variables: |
| 2077 | * c-basic-offset: 8 |
| 2078 | * tab-width: 8 |
| 2079 | * End: |
| 2080 | */ |