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1da177e4 LT |
1 | /* yellowfin.c: A Packet Engines G-NIC ethernet driver for linux. */ |
2 | /* | |
3 | Written 1997-2001 by Donald Becker. | |
4 | ||
5 | This software may be used and distributed according to the terms of | |
6 | the GNU General Public License (GPL), incorporated herein by reference. | |
7 | Drivers based on or derived from this code fall under the GPL and must | |
8 | retain the authorship, copyright and license notice. This file is not | |
9 | a complete program and may only be used when the entire operating | |
10 | system is licensed under the GPL. | |
11 | ||
12 | This driver is for the Packet Engines G-NIC PCI Gigabit Ethernet adapter. | |
13 | It also supports the Symbios Logic version of the same chip core. | |
14 | ||
15 | The author may be reached as becker@scyld.com, or C/O | |
16 | Scyld Computing Corporation | |
17 | 410 Severn Ave., Suite 210 | |
18 | Annapolis MD 21403 | |
19 | ||
20 | Support and updates available at | |
21 | http://www.scyld.com/network/yellowfin.html | |
03a8c661 | 22 | [link no longer provides useful info -jgarzik] |
1da177e4 | 23 | |
1da177e4 LT |
24 | */ |
25 | ||
acbbf1f1 JP |
26 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
27 | ||
1da177e4 | 28 | #define DRV_NAME "yellowfin" |
d5b20697 AG |
29 | #define DRV_VERSION "2.1" |
30 | #define DRV_RELDATE "Sep 11, 2006" | |
1da177e4 | 31 | |
1da177e4 LT |
32 | /* The user-configurable values. |
33 | These may be modified when a driver module is loaded.*/ | |
34 | ||
35 | static int debug = 1; /* 1 normal messages, 0 quiet .. 7 verbose. */ | |
36 | /* Maximum events (Rx packets, etc.) to handle at each interrupt. */ | |
37 | static int max_interrupt_work = 20; | |
38 | static int mtu; | |
39 | #ifdef YF_PROTOTYPE /* Support for prototype hardware errata. */ | |
40 | /* System-wide count of bogus-rx frames. */ | |
41 | static int bogus_rx; | |
42 | static int dma_ctrl = 0x004A0263; /* Constrained by errata */ | |
43 | static int fifo_cfg = 0x0020; /* Bypass external Tx FIFO. */ | |
44 | #elif defined(YF_NEW) /* A future perfect board :->. */ | |
45 | static int dma_ctrl = 0x00CAC277; /* Override when loading module! */ | |
46 | static int fifo_cfg = 0x0028; | |
47 | #else | |
f71e1309 AV |
48 | static const int dma_ctrl = 0x004A0263; /* Constrained by errata */ |
49 | static const int fifo_cfg = 0x0020; /* Bypass external Tx FIFO. */ | |
1da177e4 LT |
50 | #endif |
51 | ||
52 | /* Set the copy breakpoint for the copy-only-tiny-frames scheme. | |
53 | Setting to > 1514 effectively disables this feature. */ | |
54 | static int rx_copybreak; | |
55 | ||
56 | /* Used to pass the media type, etc. | |
57 | No media types are currently defined. These exist for driver | |
58 | interoperability. | |
59 | */ | |
60 | #define MAX_UNITS 8 /* More are supported, limit only on options */ | |
61 | static int options[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1}; | |
62 | static int full_duplex[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1}; | |
63 | ||
64 | /* Do ugly workaround for GX server chipset errata. */ | |
65 | static int gx_fix; | |
66 | ||
67 | /* Operational parameters that are set at compile time. */ | |
68 | ||
69 | /* Keep the ring sizes a power of two for efficiency. | |
70 | Making the Tx ring too long decreases the effectiveness of channel | |
71 | bonding and packet priority. | |
72 | There are no ill effects from too-large receive rings. */ | |
73 | #define TX_RING_SIZE 16 | |
74 | #define TX_QUEUE_SIZE 12 /* Must be > 4 && <= TX_RING_SIZE */ | |
75 | #define RX_RING_SIZE 64 | |
76 | #define STATUS_TOTAL_SIZE TX_RING_SIZE*sizeof(struct tx_status_words) | |
77 | #define TX_TOTAL_SIZE 2*TX_RING_SIZE*sizeof(struct yellowfin_desc) | |
78 | #define RX_TOTAL_SIZE RX_RING_SIZE*sizeof(struct yellowfin_desc) | |
79 | ||
80 | /* Operational parameters that usually are not changed. */ | |
81 | /* Time in jiffies before concluding the transmitter is hung. */ | |
82 | #define TX_TIMEOUT (2*HZ) | |
83 | #define PKT_BUF_SZ 1536 /* Size of each temporary Rx buffer.*/ | |
84 | ||
85 | #define yellowfin_debug debug | |
86 | ||
87 | #include <linux/module.h> | |
88 | #include <linux/kernel.h> | |
89 | #include <linux/string.h> | |
90 | #include <linux/timer.h> | |
91 | #include <linux/errno.h> | |
92 | #include <linux/ioport.h> | |
93 | #include <linux/slab.h> | |
94 | #include <linux/interrupt.h> | |
95 | #include <linux/pci.h> | |
96 | #include <linux/init.h> | |
97 | #include <linux/mii.h> | |
98 | #include <linux/netdevice.h> | |
99 | #include <linux/etherdevice.h> | |
100 | #include <linux/skbuff.h> | |
101 | #include <linux/ethtool.h> | |
102 | #include <linux/crc32.h> | |
103 | #include <linux/bitops.h> | |
104 | #include <asm/uaccess.h> | |
105 | #include <asm/processor.h> /* Processor type for cache alignment. */ | |
106 | #include <asm/unaligned.h> | |
107 | #include <asm/io.h> | |
108 | ||
109 | /* These identify the driver base version and may not be removed. */ | |
7285484a SH |
110 | static const char version[] __devinitconst = |
111 | KERN_INFO DRV_NAME ".c:v1.05 1/09/2001 Written by Donald Becker <becker@scyld.com>\n" | |
ad361c98 | 112 | " (unofficial 2.4.x port, " DRV_VERSION ", " DRV_RELDATE ")\n"; |
1da177e4 LT |
113 | |
114 | MODULE_AUTHOR("Donald Becker <becker@scyld.com>"); | |
115 | MODULE_DESCRIPTION("Packet Engines Yellowfin G-NIC Gigabit Ethernet driver"); | |
116 | MODULE_LICENSE("GPL"); | |
117 | ||
118 | module_param(max_interrupt_work, int, 0); | |
119 | module_param(mtu, int, 0); | |
120 | module_param(debug, int, 0); | |
121 | module_param(rx_copybreak, int, 0); | |
122 | module_param_array(options, int, NULL, 0); | |
123 | module_param_array(full_duplex, int, NULL, 0); | |
124 | module_param(gx_fix, int, 0); | |
125 | MODULE_PARM_DESC(max_interrupt_work, "G-NIC maximum events handled per interrupt"); | |
126 | MODULE_PARM_DESC(mtu, "G-NIC MTU (all boards)"); | |
127 | MODULE_PARM_DESC(debug, "G-NIC debug level (0-7)"); | |
128 | MODULE_PARM_DESC(rx_copybreak, "G-NIC copy breakpoint for copy-only-tiny-frames"); | |
129 | MODULE_PARM_DESC(options, "G-NIC: Bits 0-3: media type, bit 17: full duplex"); | |
130 | MODULE_PARM_DESC(full_duplex, "G-NIC full duplex setting(s) (1)"); | |
131 | MODULE_PARM_DESC(gx_fix, "G-NIC: enable GX server chipset bug workaround (0-1)"); | |
132 | ||
133 | /* | |
134 | Theory of Operation | |
135 | ||
136 | I. Board Compatibility | |
137 | ||
138 | This device driver is designed for the Packet Engines "Yellowfin" Gigabit | |
6aa20a22 | 139 | Ethernet adapter. The G-NIC 64-bit PCI card is supported, as well as the |
1da177e4 LT |
140 | Symbios 53C885E dual function chip. |
141 | ||
142 | II. Board-specific settings | |
143 | ||
144 | PCI bus devices are configured by the system at boot time, so no jumpers | |
145 | need to be set on the board. The system BIOS preferably should assign the | |
146 | PCI INTA signal to an otherwise unused system IRQ line. | |
147 | Note: Kernel versions earlier than 1.3.73 do not support shared PCI | |
148 | interrupt lines. | |
149 | ||
150 | III. Driver operation | |
151 | ||
152 | IIIa. Ring buffers | |
153 | ||
154 | The Yellowfin uses the Descriptor Based DMA Architecture specified by Apple. | |
155 | This is a descriptor list scheme similar to that used by the EEPro100 and | |
156 | Tulip. This driver uses two statically allocated fixed-size descriptor lists | |
157 | formed into rings by a branch from the final descriptor to the beginning of | |
158 | the list. The ring sizes are set at compile time by RX/TX_RING_SIZE. | |
159 | ||
160 | The driver allocates full frame size skbuffs for the Rx ring buffers at | |
161 | open() time and passes the skb->data field to the Yellowfin as receive data | |
162 | buffers. When an incoming frame is less than RX_COPYBREAK bytes long, | |
163 | a fresh skbuff is allocated and the frame is copied to the new skbuff. | |
164 | When the incoming frame is larger, the skbuff is passed directly up the | |
165 | protocol stack and replaced by a newly allocated skbuff. | |
166 | ||
167 | The RX_COPYBREAK value is chosen to trade-off the memory wasted by | |
168 | using a full-sized skbuff for small frames vs. the copying costs of larger | |
169 | frames. For small frames the copying cost is negligible (esp. considering | |
170 | that we are pre-loading the cache with immediately useful header | |
171 | information). For large frames the copying cost is non-trivial, and the | |
172 | larger copy might flush the cache of useful data. | |
173 | ||
174 | IIIC. Synchronization | |
175 | ||
176 | The driver runs as two independent, single-threaded flows of control. One | |
177 | is the send-packet routine, which enforces single-threaded use by the | |
178 | dev->tbusy flag. The other thread is the interrupt handler, which is single | |
179 | threaded by the hardware and other software. | |
180 | ||
181 | The send packet thread has partial control over the Tx ring and 'dev->tbusy' | |
182 | flag. It sets the tbusy flag whenever it's queuing a Tx packet. If the next | |
183 | queue slot is empty, it clears the tbusy flag when finished otherwise it sets | |
184 | the 'yp->tx_full' flag. | |
185 | ||
186 | The interrupt handler has exclusive control over the Rx ring and records stats | |
187 | from the Tx ring. After reaping the stats, it marks the Tx queue entry as | |
188 | empty by incrementing the dirty_tx mark. Iff the 'yp->tx_full' flag is set, it | |
189 | clears both the tx_full and tbusy flags. | |
190 | ||
191 | IV. Notes | |
192 | ||
193 | Thanks to Kim Stearns of Packet Engines for providing a pair of G-NIC boards. | |
194 | Thanks to Bruce Faust of Digitalscape for providing both their SYM53C885 board | |
195 | and an AlphaStation to verifty the Alpha port! | |
196 | ||
197 | IVb. References | |
198 | ||
199 | Yellowfin Engineering Design Specification, 4/23/97 Preliminary/Confidential | |
200 | Symbios SYM53C885 PCI-SCSI/Fast Ethernet Multifunction Controller Preliminary | |
201 | Data Manual v3.0 | |
202 | http://cesdis.gsfc.nasa.gov/linux/misc/NWay.html | |
203 | http://cesdis.gsfc.nasa.gov/linux/misc/100mbps.html | |
204 | ||
205 | IVc. Errata | |
206 | ||
207 | See Packet Engines confidential appendix (prototype chips only). | |
208 | */ | |
209 | ||
6aa20a22 | 210 | |
1da177e4 | 211 | |
1da177e4 LT |
212 | enum capability_flags { |
213 | HasMII=1, FullTxStatus=2, IsGigabit=4, HasMulticastBug=8, FullRxStatus=16, | |
214 | HasMACAddrBug=32, /* Only on early revs. */ | |
215 | DontUseEeprom=64, /* Don't read the MAC from the EEPROm. */ | |
216 | }; | |
c3d8e682 | 217 | |
1da177e4 | 218 | /* The PCI I/O space extent. */ |
c3d8e682 JG |
219 | enum { |
220 | YELLOWFIN_SIZE = 0x100, | |
221 | }; | |
1da177e4 LT |
222 | |
223 | struct pci_id_info { | |
224 | const char *name; | |
225 | struct match_info { | |
226 | int pci, pci_mask, subsystem, subsystem_mask; | |
227 | int revision, revision_mask; /* Only 8 bits. */ | |
228 | } id; | |
1da177e4 LT |
229 | int drv_flags; /* Driver use, intended as capability flags. */ |
230 | }; | |
231 | ||
f71e1309 | 232 | static const struct pci_id_info pci_id_tbl[] = { |
1da177e4 | 233 | {"Yellowfin G-NIC Gigabit Ethernet", { 0x07021000, 0xffffffff}, |
1da177e4 LT |
234 | FullTxStatus | IsGigabit | HasMulticastBug | HasMACAddrBug | DontUseEeprom}, |
235 | {"Symbios SYM83C885", { 0x07011000, 0xffffffff}, | |
c3d8e682 | 236 | HasMII | DontUseEeprom }, |
1f1bd5fc | 237 | { } |
1da177e4 LT |
238 | }; |
239 | ||
a3aa1884 | 240 | static DEFINE_PCI_DEVICE_TABLE(yellowfin_pci_tbl) = { |
1da177e4 LT |
241 | { 0x1000, 0x0702, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, |
242 | { 0x1000, 0x0701, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1 }, | |
1f1bd5fc | 243 | { } |
1da177e4 LT |
244 | }; |
245 | MODULE_DEVICE_TABLE (pci, yellowfin_pci_tbl); | |
246 | ||
247 | ||
248 | /* Offsets to the Yellowfin registers. Various sizes and alignments. */ | |
249 | enum yellowfin_offsets { | |
250 | TxCtrl=0x00, TxStatus=0x04, TxPtr=0x0C, | |
251 | TxIntrSel=0x10, TxBranchSel=0x14, TxWaitSel=0x18, | |
252 | RxCtrl=0x40, RxStatus=0x44, RxPtr=0x4C, | |
253 | RxIntrSel=0x50, RxBranchSel=0x54, RxWaitSel=0x58, | |
254 | EventStatus=0x80, IntrEnb=0x82, IntrClear=0x84, IntrStatus=0x86, | |
255 | ChipRev=0x8C, DMACtrl=0x90, TxThreshold=0x94, | |
256 | Cnfg=0xA0, FrameGap0=0xA2, FrameGap1=0xA4, | |
257 | MII_Cmd=0xA6, MII_Addr=0xA8, MII_Wr_Data=0xAA, MII_Rd_Data=0xAC, | |
258 | MII_Status=0xAE, | |
259 | RxDepth=0xB8, FlowCtrl=0xBC, | |
260 | AddrMode=0xD0, StnAddr=0xD2, HashTbl=0xD8, FIFOcfg=0xF8, | |
261 | EEStatus=0xF0, EECtrl=0xF1, EEAddr=0xF2, EERead=0xF3, EEWrite=0xF4, | |
262 | EEFeature=0xF5, | |
263 | }; | |
264 | ||
265 | /* The Yellowfin Rx and Tx buffer descriptors. | |
266 | Elements are written as 32 bit for endian portability. */ | |
267 | struct yellowfin_desc { | |
e5a31421 AV |
268 | __le32 dbdma_cmd; |
269 | __le32 addr; | |
270 | __le32 branch_addr; | |
271 | __le32 result_status; | |
1da177e4 LT |
272 | }; |
273 | ||
274 | struct tx_status_words { | |
275 | #ifdef __BIG_ENDIAN | |
276 | u16 tx_errs; | |
277 | u16 tx_cnt; | |
278 | u16 paused; | |
279 | u16 total_tx_cnt; | |
280 | #else /* Little endian chips. */ | |
281 | u16 tx_cnt; | |
282 | u16 tx_errs; | |
283 | u16 total_tx_cnt; | |
284 | u16 paused; | |
285 | #endif /* __BIG_ENDIAN */ | |
286 | }; | |
287 | ||
288 | /* Bits in yellowfin_desc.cmd */ | |
289 | enum desc_cmd_bits { | |
290 | CMD_TX_PKT=0x10000000, CMD_RX_BUF=0x20000000, CMD_TXSTATUS=0x30000000, | |
291 | CMD_NOP=0x60000000, CMD_STOP=0x70000000, | |
292 | BRANCH_ALWAYS=0x0C0000, INTR_ALWAYS=0x300000, WAIT_ALWAYS=0x030000, | |
293 | BRANCH_IFTRUE=0x040000, | |
294 | }; | |
295 | ||
296 | /* Bits in yellowfin_desc.status */ | |
297 | enum desc_status_bits { RX_EOP=0x0040, }; | |
298 | ||
299 | /* Bits in the interrupt status/mask registers. */ | |
300 | enum intr_status_bits { | |
301 | IntrRxDone=0x01, IntrRxInvalid=0x02, IntrRxPCIFault=0x04,IntrRxPCIErr=0x08, | |
302 | IntrTxDone=0x10, IntrTxInvalid=0x20, IntrTxPCIFault=0x40,IntrTxPCIErr=0x80, | |
303 | IntrEarlyRx=0x100, IntrWakeup=0x200, }; | |
304 | ||
305 | #define PRIV_ALIGN 31 /* Required alignment mask */ | |
306 | #define MII_CNT 4 | |
307 | struct yellowfin_private { | |
308 | /* Descriptor rings first for alignment. | |
309 | Tx requires a second descriptor for status. */ | |
310 | struct yellowfin_desc *rx_ring; | |
311 | struct yellowfin_desc *tx_ring; | |
312 | struct sk_buff* rx_skbuff[RX_RING_SIZE]; | |
313 | struct sk_buff* tx_skbuff[TX_RING_SIZE]; | |
314 | dma_addr_t rx_ring_dma; | |
315 | dma_addr_t tx_ring_dma; | |
316 | ||
317 | struct tx_status_words *tx_status; | |
318 | dma_addr_t tx_status_dma; | |
319 | ||
320 | struct timer_list timer; /* Media selection timer. */ | |
1da177e4 LT |
321 | /* Frequently used and paired value: keep adjacent for cache effect. */ |
322 | int chip_id, drv_flags; | |
323 | struct pci_dev *pci_dev; | |
324 | unsigned int cur_rx, dirty_rx; /* Producer/consumer ring indices */ | |
325 | unsigned int rx_buf_sz; /* Based on MTU+slack. */ | |
326 | struct tx_status_words *tx_tail_desc; | |
327 | unsigned int cur_tx, dirty_tx; | |
328 | int tx_threshold; | |
329 | unsigned int tx_full:1; /* The Tx queue is full. */ | |
330 | unsigned int full_duplex:1; /* Full-duplex operation requested. */ | |
331 | unsigned int duplex_lock:1; | |
332 | unsigned int medialock:1; /* Do not sense media. */ | |
333 | unsigned int default_port:4; /* Last dev->if_port value. */ | |
334 | /* MII transceiver section. */ | |
335 | int mii_cnt; /* MII device addresses. */ | |
336 | u16 advertising; /* NWay media advertisement */ | |
337 | unsigned char phys[MII_CNT]; /* MII device addresses, only first one used */ | |
338 | spinlock_t lock; | |
339 | void __iomem *base; | |
340 | }; | |
341 | ||
342 | static int read_eeprom(void __iomem *ioaddr, int location); | |
343 | static int mdio_read(void __iomem *ioaddr, int phy_id, int location); | |
344 | static void mdio_write(void __iomem *ioaddr, int phy_id, int location, int value); | |
345 | static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); | |
346 | static int yellowfin_open(struct net_device *dev); | |
347 | static void yellowfin_timer(unsigned long data); | |
348 | static void yellowfin_tx_timeout(struct net_device *dev); | |
e7a5965a | 349 | static int yellowfin_init_ring(struct net_device *dev); |
61357325 SH |
350 | static netdev_tx_t yellowfin_start_xmit(struct sk_buff *skb, |
351 | struct net_device *dev); | |
7d12e780 | 352 | static irqreturn_t yellowfin_interrupt(int irq, void *dev_instance); |
1da177e4 LT |
353 | static int yellowfin_rx(struct net_device *dev); |
354 | static void yellowfin_error(struct net_device *dev, int intr_status); | |
355 | static int yellowfin_close(struct net_device *dev); | |
1da177e4 | 356 | static void set_rx_mode(struct net_device *dev); |
7282d491 | 357 | static const struct ethtool_ops ethtool_ops; |
1da177e4 | 358 | |
bfd82c35 SH |
359 | static const struct net_device_ops netdev_ops = { |
360 | .ndo_open = yellowfin_open, | |
361 | .ndo_stop = yellowfin_close, | |
362 | .ndo_start_xmit = yellowfin_start_xmit, | |
363 | .ndo_set_multicast_list = set_rx_mode, | |
364 | .ndo_change_mtu = eth_change_mtu, | |
365 | .ndo_validate_addr = eth_validate_addr, | |
fe96aaa1 | 366 | .ndo_set_mac_address = eth_mac_addr, |
bfd82c35 SH |
367 | .ndo_do_ioctl = netdev_ioctl, |
368 | .ndo_tx_timeout = yellowfin_tx_timeout, | |
369 | }; | |
1da177e4 LT |
370 | |
371 | static int __devinit yellowfin_init_one(struct pci_dev *pdev, | |
372 | const struct pci_device_id *ent) | |
373 | { | |
374 | struct net_device *dev; | |
375 | struct yellowfin_private *np; | |
376 | int irq; | |
377 | int chip_idx = ent->driver_data; | |
378 | static int find_cnt; | |
379 | void __iomem *ioaddr; | |
380 | int i, option = find_cnt < MAX_UNITS ? options[find_cnt] : 0; | |
381 | int drv_flags = pci_id_tbl[chip_idx].drv_flags; | |
382 | void *ring_space; | |
383 | dma_addr_t ring_dma; | |
384 | #ifdef USE_IO_OPS | |
385 | int bar = 0; | |
386 | #else | |
387 | int bar = 1; | |
388 | #endif | |
6aa20a22 | 389 | |
1da177e4 LT |
390 | /* when built into the kernel, we only print version if device is found */ |
391 | #ifndef MODULE | |
392 | static int printed_version; | |
393 | if (!printed_version++) | |
394 | printk(version); | |
395 | #endif | |
396 | ||
397 | i = pci_enable_device(pdev); | |
398 | if (i) return i; | |
399 | ||
400 | dev = alloc_etherdev(sizeof(*np)); | |
401 | if (!dev) { | |
acbbf1f1 | 402 | pr_err("cannot allocate ethernet device\n"); |
1da177e4 LT |
403 | return -ENOMEM; |
404 | } | |
1da177e4 LT |
405 | SET_NETDEV_DEV(dev, &pdev->dev); |
406 | ||
407 | np = netdev_priv(dev); | |
408 | ||
409 | if (pci_request_regions(pdev, DRV_NAME)) | |
410 | goto err_out_free_netdev; | |
411 | ||
412 | pci_set_master (pdev); | |
413 | ||
414 | ioaddr = pci_iomap(pdev, bar, YELLOWFIN_SIZE); | |
415 | if (!ioaddr) | |
416 | goto err_out_free_res; | |
417 | ||
418 | irq = pdev->irq; | |
419 | ||
420 | if (drv_flags & DontUseEeprom) | |
421 | for (i = 0; i < 6; i++) | |
422 | dev->dev_addr[i] = ioread8(ioaddr + StnAddr + i); | |
423 | else { | |
424 | int ee_offset = (read_eeprom(ioaddr, 6) == 0xff ? 0x100 : 0); | |
425 | for (i = 0; i < 6; i++) | |
426 | dev->dev_addr[i] = read_eeprom(ioaddr, ee_offset + i); | |
427 | } | |
428 | ||
429 | /* Reset the chip. */ | |
430 | iowrite32(0x80000000, ioaddr + DMACtrl); | |
431 | ||
432 | dev->base_addr = (unsigned long)ioaddr; | |
433 | dev->irq = irq; | |
434 | ||
435 | pci_set_drvdata(pdev, dev); | |
436 | spin_lock_init(&np->lock); | |
437 | ||
438 | np->pci_dev = pdev; | |
439 | np->chip_id = chip_idx; | |
440 | np->drv_flags = drv_flags; | |
441 | np->base = ioaddr; | |
442 | ||
443 | ring_space = pci_alloc_consistent(pdev, TX_TOTAL_SIZE, &ring_dma); | |
444 | if (!ring_space) | |
445 | goto err_out_cleardev; | |
446 | np->tx_ring = (struct yellowfin_desc *)ring_space; | |
447 | np->tx_ring_dma = ring_dma; | |
448 | ||
449 | ring_space = pci_alloc_consistent(pdev, RX_TOTAL_SIZE, &ring_dma); | |
450 | if (!ring_space) | |
451 | goto err_out_unmap_tx; | |
452 | np->rx_ring = (struct yellowfin_desc *)ring_space; | |
453 | np->rx_ring_dma = ring_dma; | |
454 | ||
455 | ring_space = pci_alloc_consistent(pdev, STATUS_TOTAL_SIZE, &ring_dma); | |
456 | if (!ring_space) | |
457 | goto err_out_unmap_rx; | |
458 | np->tx_status = (struct tx_status_words *)ring_space; | |
459 | np->tx_status_dma = ring_dma; | |
460 | ||
461 | if (dev->mem_start) | |
462 | option = dev->mem_start; | |
463 | ||
464 | /* The lower four bits are the media type. */ | |
465 | if (option > 0) { | |
466 | if (option & 0x200) | |
467 | np->full_duplex = 1; | |
468 | np->default_port = option & 15; | |
469 | if (np->default_port) | |
470 | np->medialock = 1; | |
471 | } | |
472 | if (find_cnt < MAX_UNITS && full_duplex[find_cnt] > 0) | |
473 | np->full_duplex = 1; | |
474 | ||
475 | if (np->full_duplex) | |
476 | np->duplex_lock = 1; | |
477 | ||
478 | /* The Yellowfin-specific entries in the device structure. */ | |
bfd82c35 | 479 | dev->netdev_ops = &netdev_ops; |
1da177e4 | 480 | SET_ETHTOOL_OPS(dev, ðtool_ops); |
1da177e4 LT |
481 | dev->watchdog_timeo = TX_TIMEOUT; |
482 | ||
483 | if (mtu) | |
484 | dev->mtu = mtu; | |
485 | ||
486 | i = register_netdev(dev); | |
487 | if (i) | |
488 | goto err_out_unmap_status; | |
489 | ||
acbbf1f1 JP |
490 | netdev_info(dev, "%s type %8x at %p, %pM, IRQ %d\n", |
491 | pci_id_tbl[chip_idx].name, | |
492 | ioread32(ioaddr + ChipRev), ioaddr, | |
493 | dev->dev_addr, irq); | |
1da177e4 LT |
494 | |
495 | if (np->drv_flags & HasMII) { | |
496 | int phy, phy_idx = 0; | |
497 | for (phy = 0; phy < 32 && phy_idx < MII_CNT; phy++) { | |
498 | int mii_status = mdio_read(ioaddr, phy, 1); | |
499 | if (mii_status != 0xffff && mii_status != 0x0000) { | |
500 | np->phys[phy_idx++] = phy; | |
501 | np->advertising = mdio_read(ioaddr, phy, 4); | |
acbbf1f1 JP |
502 | netdev_info(dev, "MII PHY found at address %d, status 0x%04x advertising %04x\n", |
503 | phy, mii_status, np->advertising); | |
1da177e4 LT |
504 | } |
505 | } | |
506 | np->mii_cnt = phy_idx; | |
507 | } | |
508 | ||
509 | find_cnt++; | |
6aa20a22 | 510 | |
1da177e4 LT |
511 | return 0; |
512 | ||
513 | err_out_unmap_status: | |
6aa20a22 | 514 | pci_free_consistent(pdev, STATUS_TOTAL_SIZE, np->tx_status, |
1da177e4 LT |
515 | np->tx_status_dma); |
516 | err_out_unmap_rx: | |
517 | pci_free_consistent(pdev, RX_TOTAL_SIZE, np->rx_ring, np->rx_ring_dma); | |
518 | err_out_unmap_tx: | |
519 | pci_free_consistent(pdev, TX_TOTAL_SIZE, np->tx_ring, np->tx_ring_dma); | |
520 | err_out_cleardev: | |
521 | pci_set_drvdata(pdev, NULL); | |
522 | pci_iounmap(pdev, ioaddr); | |
523 | err_out_free_res: | |
524 | pci_release_regions(pdev); | |
525 | err_out_free_netdev: | |
526 | free_netdev (dev); | |
527 | return -ENODEV; | |
528 | } | |
529 | ||
530 | static int __devinit read_eeprom(void __iomem *ioaddr, int location) | |
531 | { | |
532 | int bogus_cnt = 10000; /* Typical 33Mhz: 1050 ticks */ | |
533 | ||
534 | iowrite8(location, ioaddr + EEAddr); | |
535 | iowrite8(0x30 | ((location >> 8) & 7), ioaddr + EECtrl); | |
536 | while ((ioread8(ioaddr + EEStatus) & 0x80) && --bogus_cnt > 0) | |
537 | ; | |
538 | return ioread8(ioaddr + EERead); | |
539 | } | |
540 | ||
541 | /* MII Managemen Data I/O accesses. | |
542 | These routines assume the MDIO controller is idle, and do not exit until | |
543 | the command is finished. */ | |
544 | ||
545 | static int mdio_read(void __iomem *ioaddr, int phy_id, int location) | |
546 | { | |
547 | int i; | |
548 | ||
549 | iowrite16((phy_id<<8) + location, ioaddr + MII_Addr); | |
550 | iowrite16(1, ioaddr + MII_Cmd); | |
551 | for (i = 10000; i >= 0; i--) | |
552 | if ((ioread16(ioaddr + MII_Status) & 1) == 0) | |
553 | break; | |
554 | return ioread16(ioaddr + MII_Rd_Data); | |
555 | } | |
556 | ||
557 | static void mdio_write(void __iomem *ioaddr, int phy_id, int location, int value) | |
558 | { | |
559 | int i; | |
560 | ||
561 | iowrite16((phy_id<<8) + location, ioaddr + MII_Addr); | |
562 | iowrite16(value, ioaddr + MII_Wr_Data); | |
563 | ||
564 | /* Wait for the command to finish. */ | |
565 | for (i = 10000; i >= 0; i--) | |
566 | if ((ioread16(ioaddr + MII_Status) & 1) == 0) | |
567 | break; | |
568 | return; | |
569 | } | |
570 | ||
6aa20a22 | 571 | |
1da177e4 LT |
572 | static int yellowfin_open(struct net_device *dev) |
573 | { | |
574 | struct yellowfin_private *yp = netdev_priv(dev); | |
575 | void __iomem *ioaddr = yp->base; | |
e7a5965a | 576 | int i, ret; |
1da177e4 LT |
577 | |
578 | /* Reset the chip. */ | |
579 | iowrite32(0x80000000, ioaddr + DMACtrl); | |
580 | ||
a0607fd3 | 581 | ret = request_irq(dev->irq, yellowfin_interrupt, IRQF_SHARED, dev->name, dev); |
e7a5965a RK |
582 | if (ret) |
583 | return ret; | |
1da177e4 LT |
584 | |
585 | if (yellowfin_debug > 1) | |
acbbf1f1 JP |
586 | netdev_printk(KERN_DEBUG, dev, "%s() irq %d\n", |
587 | __func__, dev->irq); | |
1da177e4 | 588 | |
e7a5965a RK |
589 | ret = yellowfin_init_ring(dev); |
590 | if (ret) { | |
591 | free_irq(dev->irq, dev); | |
592 | return ret; | |
593 | } | |
1da177e4 LT |
594 | |
595 | iowrite32(yp->rx_ring_dma, ioaddr + RxPtr); | |
596 | iowrite32(yp->tx_ring_dma, ioaddr + TxPtr); | |
597 | ||
598 | for (i = 0; i < 6; i++) | |
599 | iowrite8(dev->dev_addr[i], ioaddr + StnAddr + i); | |
600 | ||
601 | /* Set up various condition 'select' registers. | |
602 | There are no options here. */ | |
603 | iowrite32(0x00800080, ioaddr + TxIntrSel); /* Interrupt on Tx abort */ | |
604 | iowrite32(0x00800080, ioaddr + TxBranchSel); /* Branch on Tx abort */ | |
605 | iowrite32(0x00400040, ioaddr + TxWaitSel); /* Wait on Tx status */ | |
606 | iowrite32(0x00400040, ioaddr + RxIntrSel); /* Interrupt on Rx done */ | |
607 | iowrite32(0x00400040, ioaddr + RxBranchSel); /* Branch on Rx error */ | |
608 | iowrite32(0x00400040, ioaddr + RxWaitSel); /* Wait on Rx done */ | |
609 | ||
610 | /* Initialize other registers: with so many this eventually this will | |
611 | converted to an offset/value list. */ | |
612 | iowrite32(dma_ctrl, ioaddr + DMACtrl); | |
613 | iowrite16(fifo_cfg, ioaddr + FIFOcfg); | |
614 | /* Enable automatic generation of flow control frames, period 0xffff. */ | |
615 | iowrite32(0x0030FFFF, ioaddr + FlowCtrl); | |
616 | ||
617 | yp->tx_threshold = 32; | |
618 | iowrite32(yp->tx_threshold, ioaddr + TxThreshold); | |
619 | ||
620 | if (dev->if_port == 0) | |
621 | dev->if_port = yp->default_port; | |
622 | ||
623 | netif_start_queue(dev); | |
624 | ||
625 | /* Setting the Rx mode will start the Rx process. */ | |
626 | if (yp->drv_flags & IsGigabit) { | |
627 | /* We are always in full-duplex mode with gigabit! */ | |
628 | yp->full_duplex = 1; | |
629 | iowrite16(0x01CF, ioaddr + Cnfg); | |
630 | } else { | |
631 | iowrite16(0x0018, ioaddr + FrameGap0); /* 0060/4060 for non-MII 10baseT */ | |
632 | iowrite16(0x1018, ioaddr + FrameGap1); | |
633 | iowrite16(0x101C | (yp->full_duplex ? 2 : 0), ioaddr + Cnfg); | |
634 | } | |
635 | set_rx_mode(dev); | |
636 | ||
637 | /* Enable interrupts by setting the interrupt mask. */ | |
638 | iowrite16(0x81ff, ioaddr + IntrEnb); /* See enum intr_status_bits */ | |
639 | iowrite16(0x0000, ioaddr + EventStatus); /* Clear non-interrupting events */ | |
640 | iowrite32(0x80008000, ioaddr + RxCtrl); /* Start Rx and Tx channels. */ | |
641 | iowrite32(0x80008000, ioaddr + TxCtrl); | |
642 | ||
643 | if (yellowfin_debug > 2) { | |
acbbf1f1 | 644 | netdev_printk(KERN_DEBUG, dev, "Done %s()\n", __func__); |
1da177e4 LT |
645 | } |
646 | ||
647 | /* Set the timer to check for link beat. */ | |
648 | init_timer(&yp->timer); | |
649 | yp->timer.expires = jiffies + 3*HZ; | |
650 | yp->timer.data = (unsigned long)dev; | |
651 | yp->timer.function = &yellowfin_timer; /* timer handler */ | |
652 | add_timer(&yp->timer); | |
653 | ||
654 | return 0; | |
655 | } | |
656 | ||
657 | static void yellowfin_timer(unsigned long data) | |
658 | { | |
659 | struct net_device *dev = (struct net_device *)data; | |
660 | struct yellowfin_private *yp = netdev_priv(dev); | |
661 | void __iomem *ioaddr = yp->base; | |
662 | int next_tick = 60*HZ; | |
663 | ||
664 | if (yellowfin_debug > 3) { | |
acbbf1f1 JP |
665 | netdev_printk(KERN_DEBUG, dev, "Yellowfin timer tick, status %08x\n", |
666 | ioread16(ioaddr + IntrStatus)); | |
1da177e4 LT |
667 | } |
668 | ||
669 | if (yp->mii_cnt) { | |
670 | int bmsr = mdio_read(ioaddr, yp->phys[0], MII_BMSR); | |
671 | int lpa = mdio_read(ioaddr, yp->phys[0], MII_LPA); | |
672 | int negotiated = lpa & yp->advertising; | |
673 | if (yellowfin_debug > 1) | |
acbbf1f1 JP |
674 | netdev_printk(KERN_DEBUG, dev, "MII #%d status register is %04x, link partner capability %04x\n", |
675 | yp->phys[0], bmsr, lpa); | |
1da177e4 LT |
676 | |
677 | yp->full_duplex = mii_duplex(yp->duplex_lock, negotiated); | |
6aa20a22 | 678 | |
1da177e4 LT |
679 | iowrite16(0x101C | (yp->full_duplex ? 2 : 0), ioaddr + Cnfg); |
680 | ||
681 | if (bmsr & BMSR_LSTATUS) | |
682 | next_tick = 60*HZ; | |
683 | else | |
684 | next_tick = 3*HZ; | |
685 | } | |
686 | ||
687 | yp->timer.expires = jiffies + next_tick; | |
688 | add_timer(&yp->timer); | |
689 | } | |
690 | ||
691 | static void yellowfin_tx_timeout(struct net_device *dev) | |
692 | { | |
693 | struct yellowfin_private *yp = netdev_priv(dev); | |
694 | void __iomem *ioaddr = yp->base; | |
695 | ||
acbbf1f1 JP |
696 | netdev_warn(dev, "Yellowfin transmit timed out at %d/%d Tx status %04x, Rx status %04x, resetting...\n", |
697 | yp->cur_tx, yp->dirty_tx, | |
698 | ioread32(ioaddr + TxStatus), | |
699 | ioread32(ioaddr + RxStatus)); | |
1da177e4 LT |
700 | |
701 | /* Note: these should be KERN_DEBUG. */ | |
702 | if (yellowfin_debug) { | |
703 | int i; | |
acbbf1f1 | 704 | pr_warning(" Rx ring %p: ", yp->rx_ring); |
1da177e4 | 705 | for (i = 0; i < RX_RING_SIZE; i++) |
acbbf1f1 JP |
706 | pr_cont(" %08x", yp->rx_ring[i].result_status); |
707 | pr_cont("\n"); | |
708 | pr_warning(" Tx ring %p: ", yp->tx_ring); | |
1da177e4 | 709 | for (i = 0; i < TX_RING_SIZE; i++) |
acbbf1f1 | 710 | pr_cont(" %04x /%08x", |
ad361c98 JP |
711 | yp->tx_status[i].tx_errs, |
712 | yp->tx_ring[i].result_status); | |
acbbf1f1 | 713 | pr_cont("\n"); |
1da177e4 LT |
714 | } |
715 | ||
716 | /* If the hardware is found to hang regularly, we will update the code | |
717 | to reinitialize the chip here. */ | |
718 | dev->if_port = 0; | |
719 | ||
720 | /* Wake the potentially-idle transmit channel. */ | |
721 | iowrite32(0x10001000, yp->base + TxCtrl); | |
722 | if (yp->cur_tx - yp->dirty_tx < TX_QUEUE_SIZE) | |
723 | netif_wake_queue (dev); /* Typical path */ | |
724 | ||
cdd0db05 | 725 | dev->trans_start = jiffies; /* prevent tx timeout */ |
09f75cd7 | 726 | dev->stats.tx_errors++; |
1da177e4 LT |
727 | } |
728 | ||
729 | /* Initialize the Rx and Tx rings, along with various 'dev' bits. */ | |
e7a5965a | 730 | static int yellowfin_init_ring(struct net_device *dev) |
1da177e4 LT |
731 | { |
732 | struct yellowfin_private *yp = netdev_priv(dev); | |
e7a5965a | 733 | int i, j; |
1da177e4 LT |
734 | |
735 | yp->tx_full = 0; | |
736 | yp->cur_rx = yp->cur_tx = 0; | |
737 | yp->dirty_tx = 0; | |
738 | ||
739 | yp->rx_buf_sz = (dev->mtu <= 1500 ? PKT_BUF_SZ : dev->mtu + 32); | |
740 | ||
741 | for (i = 0; i < RX_RING_SIZE; i++) { | |
742 | yp->rx_ring[i].dbdma_cmd = | |
743 | cpu_to_le32(CMD_RX_BUF | INTR_ALWAYS | yp->rx_buf_sz); | |
744 | yp->rx_ring[i].branch_addr = cpu_to_le32(yp->rx_ring_dma + | |
745 | ((i+1)%RX_RING_SIZE)*sizeof(struct yellowfin_desc)); | |
746 | } | |
747 | ||
748 | for (i = 0; i < RX_RING_SIZE; i++) { | |
749 | struct sk_buff *skb = dev_alloc_skb(yp->rx_buf_sz); | |
750 | yp->rx_skbuff[i] = skb; | |
751 | if (skb == NULL) | |
752 | break; | |
753 | skb->dev = dev; /* Mark as being used by this device. */ | |
754 | skb_reserve(skb, 2); /* 16 byte align the IP header. */ | |
755 | yp->rx_ring[i].addr = cpu_to_le32(pci_map_single(yp->pci_dev, | |
689be439 | 756 | skb->data, yp->rx_buf_sz, PCI_DMA_FROMDEVICE)); |
1da177e4 | 757 | } |
e7a5965a RK |
758 | if (i != RX_RING_SIZE) { |
759 | for (j = 0; j < i; j++) | |
760 | dev_kfree_skb(yp->rx_skbuff[j]); | |
761 | return -ENOMEM; | |
762 | } | |
1da177e4 LT |
763 | yp->rx_ring[i-1].dbdma_cmd = cpu_to_le32(CMD_STOP); |
764 | yp->dirty_rx = (unsigned int)(i - RX_RING_SIZE); | |
765 | ||
766 | #define NO_TXSTATS | |
767 | #ifdef NO_TXSTATS | |
768 | /* In this mode the Tx ring needs only a single descriptor. */ | |
769 | for (i = 0; i < TX_RING_SIZE; i++) { | |
770 | yp->tx_skbuff[i] = NULL; | |
771 | yp->tx_ring[i].dbdma_cmd = cpu_to_le32(CMD_STOP); | |
772 | yp->tx_ring[i].branch_addr = cpu_to_le32(yp->tx_ring_dma + | |
773 | ((i+1)%TX_RING_SIZE)*sizeof(struct yellowfin_desc)); | |
774 | } | |
775 | /* Wrap ring */ | |
776 | yp->tx_ring[--i].dbdma_cmd = cpu_to_le32(CMD_STOP | BRANCH_ALWAYS); | |
777 | #else | |
778 | { | |
1da177e4 LT |
779 | /* Tx ring needs a pair of descriptors, the second for the status. */ |
780 | for (i = 0; i < TX_RING_SIZE; i++) { | |
781 | j = 2*i; | |
782 | yp->tx_skbuff[i] = 0; | |
783 | /* Branch on Tx error. */ | |
784 | yp->tx_ring[j].dbdma_cmd = cpu_to_le32(CMD_STOP); | |
785 | yp->tx_ring[j].branch_addr = cpu_to_le32(yp->tx_ring_dma + | |
80950f8b | 786 | (j+1)*sizeof(struct yellowfin_desc)); |
1da177e4 LT |
787 | j++; |
788 | if (yp->flags & FullTxStatus) { | |
789 | yp->tx_ring[j].dbdma_cmd = | |
790 | cpu_to_le32(CMD_TXSTATUS | sizeof(*yp->tx_status)); | |
791 | yp->tx_ring[j].request_cnt = sizeof(*yp->tx_status); | |
792 | yp->tx_ring[j].addr = cpu_to_le32(yp->tx_status_dma + | |
80950f8b | 793 | i*sizeof(struct tx_status_words)); |
1da177e4 LT |
794 | } else { |
795 | /* Symbios chips write only tx_errs word. */ | |
796 | yp->tx_ring[j].dbdma_cmd = | |
797 | cpu_to_le32(CMD_TXSTATUS | INTR_ALWAYS | 2); | |
798 | yp->tx_ring[j].request_cnt = 2; | |
799 | /* Om pade ummmmm... */ | |
800 | yp->tx_ring[j].addr = cpu_to_le32(yp->tx_status_dma + | |
801 | i*sizeof(struct tx_status_words) + | |
6aa20a22 | 802 | &(yp->tx_status[0].tx_errs) - |
1da177e4 LT |
803 | &(yp->tx_status[0])); |
804 | } | |
6aa20a22 | 805 | yp->tx_ring[j].branch_addr = cpu_to_le32(yp->tx_ring_dma + |
1da177e4 LT |
806 | ((j+1)%(2*TX_RING_SIZE))*sizeof(struct yellowfin_desc)); |
807 | } | |
808 | /* Wrap ring */ | |
809 | yp->tx_ring[++j].dbdma_cmd |= cpu_to_le32(BRANCH_ALWAYS | INTR_ALWAYS); | |
810 | } | |
811 | #endif | |
812 | yp->tx_tail_desc = &yp->tx_status[0]; | |
e7a5965a | 813 | return 0; |
1da177e4 LT |
814 | } |
815 | ||
61357325 SH |
816 | static netdev_tx_t yellowfin_start_xmit(struct sk_buff *skb, |
817 | struct net_device *dev) | |
1da177e4 LT |
818 | { |
819 | struct yellowfin_private *yp = netdev_priv(dev); | |
820 | unsigned entry; | |
821 | int len = skb->len; | |
822 | ||
823 | netif_stop_queue (dev); | |
824 | ||
825 | /* Note: Ordering is important here, set the field with the | |
826 | "ownership" bit last, and only then increment cur_tx. */ | |
827 | ||
828 | /* Calculate the next Tx descriptor entry. */ | |
829 | entry = yp->cur_tx % TX_RING_SIZE; | |
830 | ||
831 | if (gx_fix) { /* Note: only works for paddable protocols e.g. IP. */ | |
832 | int cacheline_end = ((unsigned long)skb->data + skb->len) % 32; | |
833 | /* Fix GX chipset errata. */ | |
834 | if (cacheline_end > 24 || cacheline_end == 0) { | |
835 | len = skb->len + 32 - cacheline_end + 1; | |
5b057c6b HX |
836 | if (skb_padto(skb, len)) { |
837 | yp->tx_skbuff[entry] = NULL; | |
838 | netif_wake_queue(dev); | |
6ed10654 | 839 | return NETDEV_TX_OK; |
5b057c6b | 840 | } |
1da177e4 LT |
841 | } |
842 | } | |
843 | yp->tx_skbuff[entry] = skb; | |
844 | ||
845 | #ifdef NO_TXSTATS | |
6aa20a22 | 846 | yp->tx_ring[entry].addr = cpu_to_le32(pci_map_single(yp->pci_dev, |
1da177e4 LT |
847 | skb->data, len, PCI_DMA_TODEVICE)); |
848 | yp->tx_ring[entry].result_status = 0; | |
849 | if (entry >= TX_RING_SIZE-1) { | |
850 | /* New stop command. */ | |
851 | yp->tx_ring[0].dbdma_cmd = cpu_to_le32(CMD_STOP); | |
852 | yp->tx_ring[TX_RING_SIZE-1].dbdma_cmd = | |
853 | cpu_to_le32(CMD_TX_PKT|BRANCH_ALWAYS | len); | |
854 | } else { | |
855 | yp->tx_ring[entry+1].dbdma_cmd = cpu_to_le32(CMD_STOP); | |
856 | yp->tx_ring[entry].dbdma_cmd = | |
857 | cpu_to_le32(CMD_TX_PKT | BRANCH_IFTRUE | len); | |
858 | } | |
859 | yp->cur_tx++; | |
860 | #else | |
861 | yp->tx_ring[entry<<1].request_cnt = len; | |
6aa20a22 | 862 | yp->tx_ring[entry<<1].addr = cpu_to_le32(pci_map_single(yp->pci_dev, |
1da177e4 | 863 | skb->data, len, PCI_DMA_TODEVICE)); |
6aa20a22 | 864 | /* The input_last (status-write) command is constant, but we must |
1da177e4 LT |
865 | rewrite the subsequent 'stop' command. */ |
866 | ||
867 | yp->cur_tx++; | |
868 | { | |
869 | unsigned next_entry = yp->cur_tx % TX_RING_SIZE; | |
870 | yp->tx_ring[next_entry<<1].dbdma_cmd = cpu_to_le32(CMD_STOP); | |
871 | } | |
872 | /* Final step -- overwrite the old 'stop' command. */ | |
873 | ||
874 | yp->tx_ring[entry<<1].dbdma_cmd = | |
875 | cpu_to_le32( ((entry % 6) == 0 ? CMD_TX_PKT|INTR_ALWAYS|BRANCH_IFTRUE : | |
876 | CMD_TX_PKT | BRANCH_IFTRUE) | len); | |
877 | #endif | |
878 | ||
879 | /* Non-x86 Todo: explicitly flush cache lines here. */ | |
880 | ||
881 | /* Wake the potentially-idle transmit channel. */ | |
882 | iowrite32(0x10001000, yp->base + TxCtrl); | |
883 | ||
884 | if (yp->cur_tx - yp->dirty_tx < TX_QUEUE_SIZE) | |
885 | netif_start_queue (dev); /* Typical path */ | |
886 | else | |
887 | yp->tx_full = 1; | |
1da177e4 LT |
888 | |
889 | if (yellowfin_debug > 4) { | |
acbbf1f1 JP |
890 | netdev_printk(KERN_DEBUG, dev, "Yellowfin transmit frame #%d queued in slot %d\n", |
891 | yp->cur_tx, entry); | |
1da177e4 | 892 | } |
6ed10654 | 893 | return NETDEV_TX_OK; |
1da177e4 LT |
894 | } |
895 | ||
896 | /* The interrupt handler does all of the Rx thread work and cleans up | |
897 | after the Tx thread. */ | |
7d12e780 | 898 | static irqreturn_t yellowfin_interrupt(int irq, void *dev_instance) |
1da177e4 LT |
899 | { |
900 | struct net_device *dev = dev_instance; | |
901 | struct yellowfin_private *yp; | |
902 | void __iomem *ioaddr; | |
903 | int boguscnt = max_interrupt_work; | |
904 | unsigned int handled = 0; | |
905 | ||
1da177e4 LT |
906 | yp = netdev_priv(dev); |
907 | ioaddr = yp->base; | |
6aa20a22 | 908 | |
1da177e4 LT |
909 | spin_lock (&yp->lock); |
910 | ||
911 | do { | |
912 | u16 intr_status = ioread16(ioaddr + IntrClear); | |
913 | ||
914 | if (yellowfin_debug > 4) | |
acbbf1f1 JP |
915 | netdev_printk(KERN_DEBUG, dev, "Yellowfin interrupt, status %04x\n", |
916 | intr_status); | |
1da177e4 LT |
917 | |
918 | if (intr_status == 0) | |
919 | break; | |
920 | handled = 1; | |
921 | ||
922 | if (intr_status & (IntrRxDone | IntrEarlyRx)) { | |
923 | yellowfin_rx(dev); | |
924 | iowrite32(0x10001000, ioaddr + RxCtrl); /* Wake Rx engine. */ | |
925 | } | |
926 | ||
927 | #ifdef NO_TXSTATS | |
928 | for (; yp->cur_tx - yp->dirty_tx > 0; yp->dirty_tx++) { | |
929 | int entry = yp->dirty_tx % TX_RING_SIZE; | |
930 | struct sk_buff *skb; | |
931 | ||
932 | if (yp->tx_ring[entry].result_status == 0) | |
933 | break; | |
934 | skb = yp->tx_skbuff[entry]; | |
09f75cd7 JG |
935 | dev->stats.tx_packets++; |
936 | dev->stats.tx_bytes += skb->len; | |
1da177e4 | 937 | /* Free the original skb. */ |
e5a31421 | 938 | pci_unmap_single(yp->pci_dev, le32_to_cpu(yp->tx_ring[entry].addr), |
1da177e4 LT |
939 | skb->len, PCI_DMA_TODEVICE); |
940 | dev_kfree_skb_irq(skb); | |
941 | yp->tx_skbuff[entry] = NULL; | |
942 | } | |
8e95a202 JP |
943 | if (yp->tx_full && |
944 | yp->cur_tx - yp->dirty_tx < TX_QUEUE_SIZE - 4) { | |
1da177e4 LT |
945 | /* The ring is no longer full, clear tbusy. */ |
946 | yp->tx_full = 0; | |
947 | netif_wake_queue(dev); | |
948 | } | |
949 | #else | |
950 | if ((intr_status & IntrTxDone) || (yp->tx_tail_desc->tx_errs)) { | |
951 | unsigned dirty_tx = yp->dirty_tx; | |
952 | ||
953 | for (dirty_tx = yp->dirty_tx; yp->cur_tx - dirty_tx > 0; | |
954 | dirty_tx++) { | |
955 | /* Todo: optimize this. */ | |
956 | int entry = dirty_tx % TX_RING_SIZE; | |
957 | u16 tx_errs = yp->tx_status[entry].tx_errs; | |
958 | struct sk_buff *skb; | |
959 | ||
960 | #ifndef final_version | |
961 | if (yellowfin_debug > 5) | |
acbbf1f1 JP |
962 | netdev_printk(KERN_DEBUG, dev, "Tx queue %d check, Tx status %04x %04x %04x %04x\n", |
963 | entry, | |
964 | yp->tx_status[entry].tx_cnt, | |
965 | yp->tx_status[entry].tx_errs, | |
966 | yp->tx_status[entry].total_tx_cnt, | |
967 | yp->tx_status[entry].paused); | |
1da177e4 LT |
968 | #endif |
969 | if (tx_errs == 0) | |
970 | break; /* It still hasn't been Txed */ | |
971 | skb = yp->tx_skbuff[entry]; | |
972 | if (tx_errs & 0xF810) { | |
973 | /* There was an major error, log it. */ | |
974 | #ifndef final_version | |
975 | if (yellowfin_debug > 1) | |
acbbf1f1 JP |
976 | netdev_printk(KERN_DEBUG, dev, "Transmit error, Tx status %04x\n", |
977 | tx_errs); | |
1da177e4 | 978 | #endif |
09f75cd7 JG |
979 | dev->stats.tx_errors++; |
980 | if (tx_errs & 0xF800) dev->stats.tx_aborted_errors++; | |
981 | if (tx_errs & 0x0800) dev->stats.tx_carrier_errors++; | |
982 | if (tx_errs & 0x2000) dev->stats.tx_window_errors++; | |
983 | if (tx_errs & 0x8000) dev->stats.tx_fifo_errors++; | |
1da177e4 LT |
984 | } else { |
985 | #ifndef final_version | |
986 | if (yellowfin_debug > 4) | |
acbbf1f1 JP |
987 | netdev_printk(KERN_DEBUG, dev, "Normal transmit, Tx status %04x\n", |
988 | tx_errs); | |
1da177e4 | 989 | #endif |
09f75cd7 JG |
990 | dev->stats.tx_bytes += skb->len; |
991 | dev->stats.collisions += tx_errs & 15; | |
992 | dev->stats.tx_packets++; | |
1da177e4 LT |
993 | } |
994 | /* Free the original skb. */ | |
6aa20a22 JG |
995 | pci_unmap_single(yp->pci_dev, |
996 | yp->tx_ring[entry<<1].addr, skb->len, | |
1da177e4 LT |
997 | PCI_DMA_TODEVICE); |
998 | dev_kfree_skb_irq(skb); | |
999 | yp->tx_skbuff[entry] = 0; | |
1000 | /* Mark status as empty. */ | |
1001 | yp->tx_status[entry].tx_errs = 0; | |
1002 | } | |
1003 | ||
1004 | #ifndef final_version | |
1005 | if (yp->cur_tx - dirty_tx > TX_RING_SIZE) { | |
acbbf1f1 JP |
1006 | netdev_err(dev, "Out-of-sync dirty pointer, %d vs. %d, full=%d\n", |
1007 | dirty_tx, yp->cur_tx, yp->tx_full); | |
1da177e4 LT |
1008 | dirty_tx += TX_RING_SIZE; |
1009 | } | |
1010 | #endif | |
1011 | ||
8e95a202 JP |
1012 | if (yp->tx_full && |
1013 | yp->cur_tx - dirty_tx < TX_QUEUE_SIZE - 2) { | |
1da177e4 LT |
1014 | /* The ring is no longer full, clear tbusy. */ |
1015 | yp->tx_full = 0; | |
1016 | netif_wake_queue(dev); | |
1017 | } | |
1018 | ||
1019 | yp->dirty_tx = dirty_tx; | |
1020 | yp->tx_tail_desc = &yp->tx_status[dirty_tx % TX_RING_SIZE]; | |
1021 | } | |
1022 | #endif | |
1023 | ||
1024 | /* Log errors and other uncommon events. */ | |
1025 | if (intr_status & 0x2ee) /* Abnormal error summary. */ | |
1026 | yellowfin_error(dev, intr_status); | |
1027 | ||
1028 | if (--boguscnt < 0) { | |
acbbf1f1 JP |
1029 | netdev_warn(dev, "Too much work at interrupt, status=%#04x\n", |
1030 | intr_status); | |
1da177e4 LT |
1031 | break; |
1032 | } | |
1033 | } while (1); | |
1034 | ||
1035 | if (yellowfin_debug > 3) | |
acbbf1f1 JP |
1036 | netdev_printk(KERN_DEBUG, dev, "exiting interrupt, status=%#04x\n", |
1037 | ioread16(ioaddr + IntrStatus)); | |
1da177e4 LT |
1038 | |
1039 | spin_unlock (&yp->lock); | |
1040 | return IRQ_RETVAL(handled); | |
1041 | } | |
1042 | ||
1043 | /* This routine is logically part of the interrupt handler, but separated | |
1044 | for clarity and better register allocation. */ | |
1045 | static int yellowfin_rx(struct net_device *dev) | |
1046 | { | |
1047 | struct yellowfin_private *yp = netdev_priv(dev); | |
1048 | int entry = yp->cur_rx % RX_RING_SIZE; | |
1049 | int boguscnt = yp->dirty_rx + RX_RING_SIZE - yp->cur_rx; | |
1050 | ||
1051 | if (yellowfin_debug > 4) { | |
acbbf1f1 | 1052 | printk(KERN_DEBUG " In yellowfin_rx(), entry %d status %08x\n", |
1da177e4 | 1053 | entry, yp->rx_ring[entry].result_status); |
acbbf1f1 | 1054 | printk(KERN_DEBUG " #%d desc. %08x %08x %08x\n", |
1da177e4 LT |
1055 | entry, yp->rx_ring[entry].dbdma_cmd, yp->rx_ring[entry].addr, |
1056 | yp->rx_ring[entry].result_status); | |
1057 | } | |
1058 | ||
1059 | /* If EOP is set on the next entry, it's a new packet. Send it up. */ | |
1060 | while (1) { | |
1061 | struct yellowfin_desc *desc = &yp->rx_ring[entry]; | |
1062 | struct sk_buff *rx_skb = yp->rx_skbuff[entry]; | |
1063 | s16 frame_status; | |
1064 | u16 desc_status; | |
1065 | int data_size; | |
1066 | u8 *buf_addr; | |
1067 | ||
1068 | if(!desc->result_status) | |
1069 | break; | |
e5a31421 | 1070 | pci_dma_sync_single_for_cpu(yp->pci_dev, le32_to_cpu(desc->addr), |
1da177e4 LT |
1071 | yp->rx_buf_sz, PCI_DMA_FROMDEVICE); |
1072 | desc_status = le32_to_cpu(desc->result_status) >> 16; | |
689be439 | 1073 | buf_addr = rx_skb->data; |
6aa20a22 | 1074 | data_size = (le32_to_cpu(desc->dbdma_cmd) - |
1da177e4 | 1075 | le32_to_cpu(desc->result_status)) & 0xffff; |
6caf52a4 | 1076 | frame_status = get_unaligned_le16(&(buf_addr[data_size - 2])); |
1da177e4 | 1077 | if (yellowfin_debug > 4) |
acbbf1f1 JP |
1078 | printk(KERN_DEBUG " %s() status was %04x\n", |
1079 | __func__, frame_status); | |
1da177e4 LT |
1080 | if (--boguscnt < 0) |
1081 | break; | |
1082 | if ( ! (desc_status & RX_EOP)) { | |
1083 | if (data_size != 0) | |
acbbf1f1 JP |
1084 | netdev_warn(dev, "Oversized Ethernet frame spanned multiple buffers, status %04x, data_size %d!\n", |
1085 | desc_status, data_size); | |
09f75cd7 | 1086 | dev->stats.rx_length_errors++; |
1da177e4 LT |
1087 | } else if ((yp->drv_flags & IsGigabit) && (frame_status & 0x0038)) { |
1088 | /* There was a error. */ | |
1089 | if (yellowfin_debug > 3) | |
acbbf1f1 JP |
1090 | printk(KERN_DEBUG " %s() Rx error was %04x\n", |
1091 | __func__, frame_status); | |
09f75cd7 JG |
1092 | dev->stats.rx_errors++; |
1093 | if (frame_status & 0x0060) dev->stats.rx_length_errors++; | |
1094 | if (frame_status & 0x0008) dev->stats.rx_frame_errors++; | |
1095 | if (frame_status & 0x0010) dev->stats.rx_crc_errors++; | |
1096 | if (frame_status < 0) dev->stats.rx_dropped++; | |
1da177e4 LT |
1097 | } else if ( !(yp->drv_flags & IsGigabit) && |
1098 | ((buf_addr[data_size-1] & 0x85) || buf_addr[data_size-2] & 0xC0)) { | |
1099 | u8 status1 = buf_addr[data_size-2]; | |
1100 | u8 status2 = buf_addr[data_size-1]; | |
09f75cd7 JG |
1101 | dev->stats.rx_errors++; |
1102 | if (status1 & 0xC0) dev->stats.rx_length_errors++; | |
1103 | if (status2 & 0x03) dev->stats.rx_frame_errors++; | |
1104 | if (status2 & 0x04) dev->stats.rx_crc_errors++; | |
1105 | if (status2 & 0x80) dev->stats.rx_dropped++; | |
1da177e4 LT |
1106 | #ifdef YF_PROTOTYPE /* Support for prototype hardware errata. */ |
1107 | } else if ((yp->flags & HasMACAddrBug) && | |
1108 | memcmp(le32_to_cpu(yp->rx_ring_dma + | |
1109 | entry*sizeof(struct yellowfin_desc)), | |
6aa20a22 | 1110 | dev->dev_addr, 6) != 0 && |
1da177e4 LT |
1111 | memcmp(le32_to_cpu(yp->rx_ring_dma + |
1112 | entry*sizeof(struct yellowfin_desc)), | |
1113 | "\377\377\377\377\377\377", 6) != 0) { | |
e174961c | 1114 | if (bogus_rx++ == 0) |
acbbf1f1 JP |
1115 | netdev_warn(dev, "Bad frame to %pM\n", |
1116 | buf_addr); | |
1da177e4 LT |
1117 | #endif |
1118 | } else { | |
1119 | struct sk_buff *skb; | |
1120 | int pkt_len = data_size - | |
1121 | (yp->chip_id ? 7 : 8 + buf_addr[data_size - 8]); | |
1122 | /* To verify: Yellowfin Length should omit the CRC! */ | |
1123 | ||
1124 | #ifndef final_version | |
1125 | if (yellowfin_debug > 4) | |
acbbf1f1 JP |
1126 | printk(KERN_DEBUG " %s() normal Rx pkt length %d of %d, bogus_cnt %d\n", |
1127 | __func__, pkt_len, data_size, boguscnt); | |
1da177e4 LT |
1128 | #endif |
1129 | /* Check if the packet is long enough to just pass up the skbuff | |
1130 | without copying to a properly sized skbuff. */ | |
1131 | if (pkt_len > rx_copybreak) { | |
1132 | skb_put(skb = rx_skb, pkt_len); | |
6aa20a22 | 1133 | pci_unmap_single(yp->pci_dev, |
e5a31421 | 1134 | le32_to_cpu(yp->rx_ring[entry].addr), |
6aa20a22 | 1135 | yp->rx_buf_sz, |
1da177e4 LT |
1136 | PCI_DMA_FROMDEVICE); |
1137 | yp->rx_skbuff[entry] = NULL; | |
1138 | } else { | |
1139 | skb = dev_alloc_skb(pkt_len + 2); | |
1140 | if (skb == NULL) | |
1141 | break; | |
1da177e4 | 1142 | skb_reserve(skb, 2); /* 16 byte align the IP header */ |
8c7b7faa | 1143 | skb_copy_to_linear_data(skb, rx_skb->data, pkt_len); |
1da177e4 | 1144 | skb_put(skb, pkt_len); |
e5a31421 AV |
1145 | pci_dma_sync_single_for_device(yp->pci_dev, |
1146 | le32_to_cpu(desc->addr), | |
1147 | yp->rx_buf_sz, | |
1148 | PCI_DMA_FROMDEVICE); | |
1da177e4 LT |
1149 | } |
1150 | skb->protocol = eth_type_trans(skb, dev); | |
1151 | netif_rx(skb); | |
09f75cd7 JG |
1152 | dev->stats.rx_packets++; |
1153 | dev->stats.rx_bytes += pkt_len; | |
1da177e4 LT |
1154 | } |
1155 | entry = (++yp->cur_rx) % RX_RING_SIZE; | |
1156 | } | |
1157 | ||
1158 | /* Refill the Rx ring buffers. */ | |
1159 | for (; yp->cur_rx - yp->dirty_rx > 0; yp->dirty_rx++) { | |
1160 | entry = yp->dirty_rx % RX_RING_SIZE; | |
1161 | if (yp->rx_skbuff[entry] == NULL) { | |
1162 | struct sk_buff *skb = dev_alloc_skb(yp->rx_buf_sz); | |
1163 | if (skb == NULL) | |
1164 | break; /* Better luck next round. */ | |
1165 | yp->rx_skbuff[entry] = skb; | |
1166 | skb->dev = dev; /* Mark as being used by this device. */ | |
1167 | skb_reserve(skb, 2); /* Align IP on 16 byte boundaries */ | |
1168 | yp->rx_ring[entry].addr = cpu_to_le32(pci_map_single(yp->pci_dev, | |
689be439 | 1169 | skb->data, yp->rx_buf_sz, PCI_DMA_FROMDEVICE)); |
1da177e4 LT |
1170 | } |
1171 | yp->rx_ring[entry].dbdma_cmd = cpu_to_le32(CMD_STOP); | |
1172 | yp->rx_ring[entry].result_status = 0; /* Clear complete bit. */ | |
1173 | if (entry != 0) | |
1174 | yp->rx_ring[entry - 1].dbdma_cmd = | |
1175 | cpu_to_le32(CMD_RX_BUF | INTR_ALWAYS | yp->rx_buf_sz); | |
1176 | else | |
1177 | yp->rx_ring[RX_RING_SIZE - 1].dbdma_cmd = | |
1178 | cpu_to_le32(CMD_RX_BUF | INTR_ALWAYS | BRANCH_ALWAYS | |
1179 | | yp->rx_buf_sz); | |
1180 | } | |
1181 | ||
1182 | return 0; | |
1183 | } | |
1184 | ||
1185 | static void yellowfin_error(struct net_device *dev, int intr_status) | |
1186 | { | |
acbbf1f1 | 1187 | netdev_err(dev, "Something Wicked happened! %04x\n", intr_status); |
1da177e4 LT |
1188 | /* Hmmmmm, it's not clear what to do here. */ |
1189 | if (intr_status & (IntrTxPCIErr | IntrTxPCIFault)) | |
09f75cd7 | 1190 | dev->stats.tx_errors++; |
1da177e4 | 1191 | if (intr_status & (IntrRxPCIErr | IntrRxPCIFault)) |
09f75cd7 | 1192 | dev->stats.rx_errors++; |
1da177e4 LT |
1193 | } |
1194 | ||
1195 | static int yellowfin_close(struct net_device *dev) | |
1196 | { | |
1197 | struct yellowfin_private *yp = netdev_priv(dev); | |
1198 | void __iomem *ioaddr = yp->base; | |
1199 | int i; | |
1200 | ||
1201 | netif_stop_queue (dev); | |
1202 | ||
1203 | if (yellowfin_debug > 1) { | |
acbbf1f1 JP |
1204 | netdev_printk(KERN_DEBUG, dev, "Shutting down ethercard, status was Tx %04x Rx %04x Int %02x\n", |
1205 | ioread16(ioaddr + TxStatus), | |
1206 | ioread16(ioaddr + RxStatus), | |
1207 | ioread16(ioaddr + IntrStatus)); | |
1208 | netdev_printk(KERN_DEBUG, dev, "Queue pointers were Tx %d / %d, Rx %d / %d\n", | |
1209 | yp->cur_tx, yp->dirty_tx, | |
1210 | yp->cur_rx, yp->dirty_rx); | |
1da177e4 LT |
1211 | } |
1212 | ||
1213 | /* Disable interrupts by clearing the interrupt mask. */ | |
1214 | iowrite16(0x0000, ioaddr + IntrEnb); | |
1215 | ||
1216 | /* Stop the chip's Tx and Rx processes. */ | |
1217 | iowrite32(0x80000000, ioaddr + RxCtrl); | |
1218 | iowrite32(0x80000000, ioaddr + TxCtrl); | |
1219 | ||
1220 | del_timer(&yp->timer); | |
1221 | ||
1222 | #if defined(__i386__) | |
1223 | if (yellowfin_debug > 2) { | |
acbbf1f1 | 1224 | printk(KERN_DEBUG " Tx ring at %08llx:\n", |
1da177e4 LT |
1225 | (unsigned long long)yp->tx_ring_dma); |
1226 | for (i = 0; i < TX_RING_SIZE*2; i++) | |
acbbf1f1 | 1227 | printk(KERN_DEBUG " %c #%d desc. %08x %08x %08x %08x\n", |
1da177e4 LT |
1228 | ioread32(ioaddr + TxPtr) == (long)&yp->tx_ring[i] ? '>' : ' ', |
1229 | i, yp->tx_ring[i].dbdma_cmd, yp->tx_ring[i].addr, | |
1230 | yp->tx_ring[i].branch_addr, yp->tx_ring[i].result_status); | |
1231 | printk(KERN_DEBUG " Tx status %p:\n", yp->tx_status); | |
1232 | for (i = 0; i < TX_RING_SIZE; i++) | |
acbbf1f1 | 1233 | printk(KERN_DEBUG " #%d status %04x %04x %04x %04x\n", |
1da177e4 LT |
1234 | i, yp->tx_status[i].tx_cnt, yp->tx_status[i].tx_errs, |
1235 | yp->tx_status[i].total_tx_cnt, yp->tx_status[i].paused); | |
1236 | ||
acbbf1f1 | 1237 | printk(KERN_DEBUG " Rx ring %08llx:\n", |
1da177e4 LT |
1238 | (unsigned long long)yp->rx_ring_dma); |
1239 | for (i = 0; i < RX_RING_SIZE; i++) { | |
acbbf1f1 | 1240 | printk(KERN_DEBUG " %c #%d desc. %08x %08x %08x\n", |
1da177e4 LT |
1241 | ioread32(ioaddr + RxPtr) == (long)&yp->rx_ring[i] ? '>' : ' ', |
1242 | i, yp->rx_ring[i].dbdma_cmd, yp->rx_ring[i].addr, | |
1243 | yp->rx_ring[i].result_status); | |
1244 | if (yellowfin_debug > 6) { | |
1245 | if (get_unaligned((u8*)yp->rx_ring[i].addr) != 0x69) { | |
1246 | int j; | |
acbbf1f1 JP |
1247 | |
1248 | printk(KERN_DEBUG); | |
1da177e4 | 1249 | for (j = 0; j < 0x50; j++) |
acbbf1f1 JP |
1250 | pr_cont(" %04x", |
1251 | get_unaligned(((u16*)yp->rx_ring[i].addr) + j)); | |
1252 | pr_cont("\n"); | |
1da177e4 LT |
1253 | } |
1254 | } | |
1255 | } | |
1256 | } | |
1257 | #endif /* __i386__ debugging only */ | |
1258 | ||
1259 | free_irq(dev->irq, dev); | |
1260 | ||
1261 | /* Free all the skbuffs in the Rx queue. */ | |
1262 | for (i = 0; i < RX_RING_SIZE; i++) { | |
1263 | yp->rx_ring[i].dbdma_cmd = cpu_to_le32(CMD_STOP); | |
e5a31421 | 1264 | yp->rx_ring[i].addr = cpu_to_le32(0xBADF00D0); /* An invalid address. */ |
1da177e4 LT |
1265 | if (yp->rx_skbuff[i]) { |
1266 | dev_kfree_skb(yp->rx_skbuff[i]); | |
1267 | } | |
1268 | yp->rx_skbuff[i] = NULL; | |
1269 | } | |
1270 | for (i = 0; i < TX_RING_SIZE; i++) { | |
1271 | if (yp->tx_skbuff[i]) | |
1272 | dev_kfree_skb(yp->tx_skbuff[i]); | |
1273 | yp->tx_skbuff[i] = NULL; | |
1274 | } | |
1275 | ||
1276 | #ifdef YF_PROTOTYPE /* Support for prototype hardware errata. */ | |
1277 | if (yellowfin_debug > 0) { | |
acbbf1f1 JP |
1278 | netdev_printk(KERN_DEBUG, dev, "Received %d frames that we should not have\n", |
1279 | bogus_rx); | |
1da177e4 LT |
1280 | } |
1281 | #endif | |
1282 | ||
1283 | return 0; | |
1284 | } | |
1285 | ||
1da177e4 LT |
1286 | /* Set or clear the multicast filter for this adaptor. */ |
1287 | ||
1288 | static void set_rx_mode(struct net_device *dev) | |
1289 | { | |
1290 | struct yellowfin_private *yp = netdev_priv(dev); | |
1291 | void __iomem *ioaddr = yp->base; | |
1292 | u16 cfg_value = ioread16(ioaddr + Cnfg); | |
1293 | ||
1294 | /* Stop the Rx process to change any value. */ | |
1295 | iowrite16(cfg_value & ~0x1000, ioaddr + Cnfg); | |
1296 | if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */ | |
1da177e4 | 1297 | iowrite16(0x000F, ioaddr + AddrMode); |
4cd24eaf JP |
1298 | } else if ((netdev_mc_count(dev) > 64) || |
1299 | (dev->flags & IFF_ALLMULTI)) { | |
1da177e4 LT |
1300 | /* Too many to filter well, or accept all multicasts. */ |
1301 | iowrite16(0x000B, ioaddr + AddrMode); | |
4cd24eaf | 1302 | } else if (!netdev_mc_empty(dev)) { /* Must use the multicast hash table. */ |
1da177e4 LT |
1303 | struct dev_mc_list *mclist; |
1304 | u16 hash_table[4]; | |
1305 | int i; | |
567ec874 | 1306 | |
1da177e4 | 1307 | memset(hash_table, 0, sizeof(hash_table)); |
567ec874 | 1308 | netdev_for_each_mc_addr(mclist, dev) { |
1da177e4 LT |
1309 | unsigned int bit; |
1310 | ||
1311 | /* Due to a bug in the early chip versions, multiple filter | |
1312 | slots must be set for each address. */ | |
1313 | if (yp->drv_flags & HasMulticastBug) { | |
1314 | bit = (ether_crc_le(3, mclist->dmi_addr) >> 3) & 0x3f; | |
1315 | hash_table[bit >> 4] |= (1 << bit); | |
1316 | bit = (ether_crc_le(4, mclist->dmi_addr) >> 3) & 0x3f; | |
1317 | hash_table[bit >> 4] |= (1 << bit); | |
1318 | bit = (ether_crc_le(5, mclist->dmi_addr) >> 3) & 0x3f; | |
1319 | hash_table[bit >> 4] |= (1 << bit); | |
1320 | } | |
1321 | bit = (ether_crc_le(6, mclist->dmi_addr) >> 3) & 0x3f; | |
1322 | hash_table[bit >> 4] |= (1 << bit); | |
1323 | } | |
1324 | /* Copy the hash table to the chip. */ | |
1325 | for (i = 0; i < 4; i++) | |
1326 | iowrite16(hash_table[i], ioaddr + HashTbl + i*2); | |
1327 | iowrite16(0x0003, ioaddr + AddrMode); | |
1328 | } else { /* Normal, unicast/broadcast-only mode. */ | |
1329 | iowrite16(0x0001, ioaddr + AddrMode); | |
1330 | } | |
1331 | /* Restart the Rx process. */ | |
1332 | iowrite16(cfg_value | 0x1000, ioaddr + Cnfg); | |
1333 | } | |
1334 | ||
1335 | static void yellowfin_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info) | |
1336 | { | |
1337 | struct yellowfin_private *np = netdev_priv(dev); | |
1338 | strcpy(info->driver, DRV_NAME); | |
1339 | strcpy(info->version, DRV_VERSION); | |
1340 | strcpy(info->bus_info, pci_name(np->pci_dev)); | |
1341 | } | |
1342 | ||
7282d491 | 1343 | static const struct ethtool_ops ethtool_ops = { |
1da177e4 LT |
1344 | .get_drvinfo = yellowfin_get_drvinfo |
1345 | }; | |
1346 | ||
1347 | static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) | |
1348 | { | |
1349 | struct yellowfin_private *np = netdev_priv(dev); | |
1350 | void __iomem *ioaddr = np->base; | |
1351 | struct mii_ioctl_data *data = if_mii(rq); | |
1352 | ||
1353 | switch(cmd) { | |
1354 | case SIOCGMIIPHY: /* Get address of MII PHY in use. */ | |
1355 | data->phy_id = np->phys[0] & 0x1f; | |
1356 | /* Fall Through */ | |
1357 | ||
1358 | case SIOCGMIIREG: /* Read MII PHY register. */ | |
1359 | data->val_out = mdio_read(ioaddr, data->phy_id & 0x1f, data->reg_num & 0x1f); | |
1360 | return 0; | |
1361 | ||
1362 | case SIOCSMIIREG: /* Write MII PHY register. */ | |
1da177e4 LT |
1363 | if (data->phy_id == np->phys[0]) { |
1364 | u16 value = data->val_in; | |
1365 | switch (data->reg_num) { | |
1366 | case 0: | |
1367 | /* Check for autonegotiation on or reset. */ | |
1368 | np->medialock = (value & 0x9000) ? 0 : 1; | |
1369 | if (np->medialock) | |
1370 | np->full_duplex = (value & 0x0100) ? 1 : 0; | |
1371 | break; | |
1372 | case 4: np->advertising = value; break; | |
1373 | } | |
1374 | /* Perhaps check_duplex(dev), depending on chip semantics. */ | |
1375 | } | |
1376 | mdio_write(ioaddr, data->phy_id & 0x1f, data->reg_num & 0x1f, data->val_in); | |
1377 | return 0; | |
1378 | default: | |
1379 | return -EOPNOTSUPP; | |
1380 | } | |
1381 | } | |
1382 | ||
1383 | ||
1384 | static void __devexit yellowfin_remove_one (struct pci_dev *pdev) | |
1385 | { | |
1386 | struct net_device *dev = pci_get_drvdata(pdev); | |
1387 | struct yellowfin_private *np; | |
1388 | ||
5d9428de | 1389 | BUG_ON(!dev); |
1da177e4 LT |
1390 | np = netdev_priv(dev); |
1391 | ||
6aa20a22 | 1392 | pci_free_consistent(pdev, STATUS_TOTAL_SIZE, np->tx_status, |
1da177e4 LT |
1393 | np->tx_status_dma); |
1394 | pci_free_consistent(pdev, RX_TOTAL_SIZE, np->rx_ring, np->rx_ring_dma); | |
1395 | pci_free_consistent(pdev, TX_TOTAL_SIZE, np->tx_ring, np->tx_ring_dma); | |
1396 | unregister_netdev (dev); | |
1397 | ||
1398 | pci_iounmap(pdev, np->base); | |
1399 | ||
1400 | pci_release_regions (pdev); | |
1401 | ||
1402 | free_netdev (dev); | |
1403 | pci_set_drvdata(pdev, NULL); | |
1404 | } | |
1405 | ||
1406 | ||
1407 | static struct pci_driver yellowfin_driver = { | |
1408 | .name = DRV_NAME, | |
1409 | .id_table = yellowfin_pci_tbl, | |
1410 | .probe = yellowfin_init_one, | |
1411 | .remove = __devexit_p(yellowfin_remove_one), | |
1412 | }; | |
1413 | ||
1414 | ||
1415 | static int __init yellowfin_init (void) | |
1416 | { | |
1417 | /* when a module, this is printed whether or not devices are found in probe */ | |
1418 | #ifdef MODULE | |
1419 | printk(version); | |
1420 | #endif | |
29917620 | 1421 | return pci_register_driver(&yellowfin_driver); |
1da177e4 LT |
1422 | } |
1423 | ||
1424 | ||
1425 | static void __exit yellowfin_cleanup (void) | |
1426 | { | |
1427 | pci_unregister_driver (&yellowfin_driver); | |
1428 | } | |
1429 | ||
1430 | ||
1431 | module_init(yellowfin_init); | |
1432 | module_exit(yellowfin_cleanup); |