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1da177e4 LT |
1 | /* 8139cp.c: A Linux PCI Ethernet driver for the RealTek 8139C+ chips. */ |
2 | /* | |
3 | Copyright 2001-2004 Jeff Garzik <jgarzik@pobox.com> | |
4 | ||
5 | Copyright (C) 2001, 2002 David S. Miller (davem@redhat.com) [tg3.c] | |
6 | Copyright (C) 2000, 2001 David S. Miller (davem@redhat.com) [sungem.c] | |
7 | Copyright 2001 Manfred Spraul [natsemi.c] | |
8 | Copyright 1999-2001 by Donald Becker. [natsemi.c] | |
9 | Written 1997-2001 by Donald Becker. [8139too.c] | |
10 | Copyright 1998-2001 by Jes Sorensen, <jes@trained-monkey.org>. [acenic.c] | |
11 | ||
12 | This software may be used and distributed according to the terms of | |
13 | the GNU General Public License (GPL), incorporated herein by reference. | |
14 | Drivers based on or derived from this code fall under the GPL and must | |
15 | retain the authorship, copyright and license notice. This file is not | |
16 | a complete program and may only be used when the entire operating | |
17 | system is licensed under the GPL. | |
18 | ||
19 | See the file COPYING in this distribution for more information. | |
20 | ||
21 | Contributors: | |
f3b197ac | 22 | |
1da177e4 LT |
23 | Wake-on-LAN support - Felipe Damasio <felipewd@terra.com.br> |
24 | PCI suspend/resume - Felipe Damasio <felipewd@terra.com.br> | |
25 | LinkChg interrupt - Felipe Damasio <felipewd@terra.com.br> | |
f3b197ac | 26 | |
1da177e4 LT |
27 | TODO: |
28 | * Test Tx checksumming thoroughly | |
1da177e4 LT |
29 | |
30 | Low priority TODO: | |
31 | * Complete reset on PciErr | |
32 | * Consider Rx interrupt mitigation using TimerIntr | |
33 | * Investigate using skb->priority with h/w VLAN priority | |
34 | * Investigate using High Priority Tx Queue with skb->priority | |
35 | * Adjust Rx FIFO threshold and Max Rx DMA burst on Rx FIFO error | |
36 | * Adjust Tx FIFO threshold and Max Tx DMA burst on Tx FIFO error | |
37 | * Implement Tx software interrupt mitigation via | |
38 | Tx descriptor bit | |
39 | * The real minimum of CP_MIN_MTU is 4 bytes. However, | |
40 | for this to be supported, one must(?) turn on packet padding. | |
41 | * Support external MII transceivers (patch available) | |
42 | ||
43 | NOTES: | |
44 | * TX checksumming is considered experimental. It is off by | |
45 | default, use ethtool to turn it on. | |
46 | ||
47 | */ | |
48 | ||
b4f18b3f JP |
49 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
50 | ||
1da177e4 | 51 | #define DRV_NAME "8139cp" |
d5b20697 | 52 | #define DRV_VERSION "1.3" |
1da177e4 LT |
53 | #define DRV_RELDATE "Mar 22, 2004" |
54 | ||
55 | ||
1da177e4 | 56 | #include <linux/module.h> |
e21ba282 | 57 | #include <linux/moduleparam.h> |
1da177e4 LT |
58 | #include <linux/kernel.h> |
59 | #include <linux/compiler.h> | |
60 | #include <linux/netdevice.h> | |
61 | #include <linux/etherdevice.h> | |
62 | #include <linux/init.h> | |
a6b7a407 | 63 | #include <linux/interrupt.h> |
1da177e4 | 64 | #include <linux/pci.h> |
8662d061 | 65 | #include <linux/dma-mapping.h> |
1da177e4 LT |
66 | #include <linux/delay.h> |
67 | #include <linux/ethtool.h> | |
5a0e3ad6 | 68 | #include <linux/gfp.h> |
1da177e4 LT |
69 | #include <linux/mii.h> |
70 | #include <linux/if_vlan.h> | |
71 | #include <linux/crc32.h> | |
72 | #include <linux/in.h> | |
73 | #include <linux/ip.h> | |
74 | #include <linux/tcp.h> | |
75 | #include <linux/udp.h> | |
76 | #include <linux/cache.h> | |
77 | #include <asm/io.h> | |
78 | #include <asm/irq.h> | |
79 | #include <asm/uaccess.h> | |
80 | ||
1da177e4 LT |
81 | /* These identify the driver base version and may not be removed. */ |
82 | static char version[] = | |
9cc40855 | 83 | DRV_NAME ": 10/100 PCI Ethernet driver v" DRV_VERSION " (" DRV_RELDATE ")\n"; |
1da177e4 LT |
84 | |
85 | MODULE_AUTHOR("Jeff Garzik <jgarzik@pobox.com>"); | |
86 | MODULE_DESCRIPTION("RealTek RTL-8139C+ series 10/100 PCI Ethernet driver"); | |
a78d8927 | 87 | MODULE_VERSION(DRV_VERSION); |
1da177e4 LT |
88 | MODULE_LICENSE("GPL"); |
89 | ||
90 | static int debug = -1; | |
e21ba282 | 91 | module_param(debug, int, 0); |
1da177e4 LT |
92 | MODULE_PARM_DESC (debug, "8139cp: bitmapped message enable number"); |
93 | ||
94 | /* Maximum number of multicast addresses to filter (vs. Rx-all-multicast). | |
95 | The RTL chips use a 64 element hash table based on the Ethernet CRC. */ | |
96 | static int multicast_filter_limit = 32; | |
e21ba282 | 97 | module_param(multicast_filter_limit, int, 0); |
1da177e4 LT |
98 | MODULE_PARM_DESC (multicast_filter_limit, "8139cp: maximum number of filtered multicast addresses"); |
99 | ||
1da177e4 LT |
100 | #define CP_DEF_MSG_ENABLE (NETIF_MSG_DRV | \ |
101 | NETIF_MSG_PROBE | \ | |
102 | NETIF_MSG_LINK) | |
103 | #define CP_NUM_STATS 14 /* struct cp_dma_stats, plus one */ | |
104 | #define CP_STATS_SIZE 64 /* size in bytes of DMA stats block */ | |
105 | #define CP_REGS_SIZE (0xff + 1) | |
106 | #define CP_REGS_VER 1 /* version 1 */ | |
107 | #define CP_RX_RING_SIZE 64 | |
108 | #define CP_TX_RING_SIZE 64 | |
109 | #define CP_RING_BYTES \ | |
110 | ((sizeof(struct cp_desc) * CP_RX_RING_SIZE) + \ | |
111 | (sizeof(struct cp_desc) * CP_TX_RING_SIZE) + \ | |
112 | CP_STATS_SIZE) | |
113 | #define NEXT_TX(N) (((N) + 1) & (CP_TX_RING_SIZE - 1)) | |
114 | #define NEXT_RX(N) (((N) + 1) & (CP_RX_RING_SIZE - 1)) | |
115 | #define TX_BUFFS_AVAIL(CP) \ | |
116 | (((CP)->tx_tail <= (CP)->tx_head) ? \ | |
117 | (CP)->tx_tail + (CP_TX_RING_SIZE - 1) - (CP)->tx_head : \ | |
118 | (CP)->tx_tail - (CP)->tx_head - 1) | |
119 | ||
120 | #define PKT_BUF_SZ 1536 /* Size of each temporary Rx buffer.*/ | |
1da177e4 LT |
121 | #define CP_INTERNAL_PHY 32 |
122 | ||
123 | /* The following settings are log_2(bytes)-4: 0 == 16 bytes .. 6==1024, 7==end of packet. */ | |
124 | #define RX_FIFO_THRESH 5 /* Rx buffer level before first PCI xfer. */ | |
125 | #define RX_DMA_BURST 4 /* Maximum PCI burst, '4' is 256 */ | |
126 | #define TX_DMA_BURST 6 /* Maximum PCI burst, '6' is 1024 */ | |
127 | #define TX_EARLY_THRESH 256 /* Early Tx threshold, in bytes */ | |
128 | ||
129 | /* Time in jiffies before concluding the transmitter is hung. */ | |
130 | #define TX_TIMEOUT (6*HZ) | |
131 | ||
132 | /* hardware minimum and maximum for a single frame's data payload */ | |
133 | #define CP_MIN_MTU 60 /* TODO: allow lower, but pad */ | |
134 | #define CP_MAX_MTU 4096 | |
135 | ||
136 | enum { | |
137 | /* NIC register offsets */ | |
138 | MAC0 = 0x00, /* Ethernet hardware address. */ | |
139 | MAR0 = 0x08, /* Multicast filter. */ | |
140 | StatsAddr = 0x10, /* 64-bit start addr of 64-byte DMA stats blk */ | |
141 | TxRingAddr = 0x20, /* 64-bit start addr of Tx ring */ | |
142 | HiTxRingAddr = 0x28, /* 64-bit start addr of high priority Tx ring */ | |
143 | Cmd = 0x37, /* Command register */ | |
144 | IntrMask = 0x3C, /* Interrupt mask */ | |
145 | IntrStatus = 0x3E, /* Interrupt status */ | |
146 | TxConfig = 0x40, /* Tx configuration */ | |
147 | ChipVersion = 0x43, /* 8-bit chip version, inside TxConfig */ | |
148 | RxConfig = 0x44, /* Rx configuration */ | |
149 | RxMissed = 0x4C, /* 24 bits valid, write clears */ | |
150 | Cfg9346 = 0x50, /* EEPROM select/control; Cfg reg [un]lock */ | |
151 | Config1 = 0x52, /* Config1 */ | |
152 | Config3 = 0x59, /* Config3 */ | |
153 | Config4 = 0x5A, /* Config4 */ | |
154 | MultiIntr = 0x5C, /* Multiple interrupt select */ | |
155 | BasicModeCtrl = 0x62, /* MII BMCR */ | |
156 | BasicModeStatus = 0x64, /* MII BMSR */ | |
157 | NWayAdvert = 0x66, /* MII ADVERTISE */ | |
158 | NWayLPAR = 0x68, /* MII LPA */ | |
159 | NWayExpansion = 0x6A, /* MII Expansion */ | |
160 | Config5 = 0xD8, /* Config5 */ | |
161 | TxPoll = 0xD9, /* Tell chip to check Tx descriptors for work */ | |
162 | RxMaxSize = 0xDA, /* Max size of an Rx packet (8169 only) */ | |
163 | CpCmd = 0xE0, /* C+ Command register (C+ mode only) */ | |
164 | IntrMitigate = 0xE2, /* rx/tx interrupt mitigation control */ | |
165 | RxRingAddr = 0xE4, /* 64-bit start addr of Rx ring */ | |
166 | TxThresh = 0xEC, /* Early Tx threshold */ | |
167 | OldRxBufAddr = 0x30, /* DMA address of Rx ring buffer (C mode) */ | |
168 | OldTSD0 = 0x10, /* DMA address of first Tx desc (C mode) */ | |
169 | ||
170 | /* Tx and Rx status descriptors */ | |
171 | DescOwn = (1 << 31), /* Descriptor is owned by NIC */ | |
172 | RingEnd = (1 << 30), /* End of descriptor ring */ | |
173 | FirstFrag = (1 << 29), /* First segment of a packet */ | |
174 | LastFrag = (1 << 28), /* Final segment of a packet */ | |
fcec3456 JG |
175 | LargeSend = (1 << 27), /* TCP Large Send Offload (TSO) */ |
176 | MSSShift = 16, /* MSS value position */ | |
177 | MSSMask = 0xfff, /* MSS value: 11 bits */ | |
1da177e4 LT |
178 | TxError = (1 << 23), /* Tx error summary */ |
179 | RxError = (1 << 20), /* Rx error summary */ | |
180 | IPCS = (1 << 18), /* Calculate IP checksum */ | |
181 | UDPCS = (1 << 17), /* Calculate UDP/IP checksum */ | |
182 | TCPCS = (1 << 16), /* Calculate TCP/IP checksum */ | |
183 | TxVlanTag = (1 << 17), /* Add VLAN tag */ | |
184 | RxVlanTagged = (1 << 16), /* Rx VLAN tag available */ | |
185 | IPFail = (1 << 15), /* IP checksum failed */ | |
186 | UDPFail = (1 << 14), /* UDP/IP checksum failed */ | |
187 | TCPFail = (1 << 13), /* TCP/IP checksum failed */ | |
188 | NormalTxPoll = (1 << 6), /* One or more normal Tx packets to send */ | |
189 | PID1 = (1 << 17), /* 2 protocol id bits: 0==non-IP, */ | |
190 | PID0 = (1 << 16), /* 1==UDP/IP, 2==TCP/IP, 3==IP */ | |
191 | RxProtoTCP = 1, | |
192 | RxProtoUDP = 2, | |
193 | RxProtoIP = 3, | |
194 | TxFIFOUnder = (1 << 25), /* Tx FIFO underrun */ | |
195 | TxOWC = (1 << 22), /* Tx Out-of-window collision */ | |
196 | TxLinkFail = (1 << 21), /* Link failed during Tx of packet */ | |
197 | TxMaxCol = (1 << 20), /* Tx aborted due to excessive collisions */ | |
198 | TxColCntShift = 16, /* Shift, to get 4-bit Tx collision cnt */ | |
199 | TxColCntMask = 0x01 | 0x02 | 0x04 | 0x08, /* 4-bit collision count */ | |
200 | RxErrFrame = (1 << 27), /* Rx frame alignment error */ | |
201 | RxMcast = (1 << 26), /* Rx multicast packet rcv'd */ | |
202 | RxErrCRC = (1 << 18), /* Rx CRC error */ | |
203 | RxErrRunt = (1 << 19), /* Rx error, packet < 64 bytes */ | |
204 | RxErrLong = (1 << 21), /* Rx error, packet > 4096 bytes */ | |
205 | RxErrFIFO = (1 << 22), /* Rx error, FIFO overflowed, pkt bad */ | |
206 | ||
207 | /* StatsAddr register */ | |
208 | DumpStats = (1 << 3), /* Begin stats dump */ | |
209 | ||
210 | /* RxConfig register */ | |
211 | RxCfgFIFOShift = 13, /* Shift, to get Rx FIFO thresh value */ | |
212 | RxCfgDMAShift = 8, /* Shift, to get Rx Max DMA value */ | |
213 | AcceptErr = 0x20, /* Accept packets with CRC errors */ | |
214 | AcceptRunt = 0x10, /* Accept runt (<64 bytes) packets */ | |
215 | AcceptBroadcast = 0x08, /* Accept broadcast packets */ | |
216 | AcceptMulticast = 0x04, /* Accept multicast packets */ | |
217 | AcceptMyPhys = 0x02, /* Accept pkts with our MAC as dest */ | |
218 | AcceptAllPhys = 0x01, /* Accept all pkts w/ physical dest */ | |
219 | ||
220 | /* IntrMask / IntrStatus registers */ | |
221 | PciErr = (1 << 15), /* System error on the PCI bus */ | |
222 | TimerIntr = (1 << 14), /* Asserted when TCTR reaches TimerInt value */ | |
223 | LenChg = (1 << 13), /* Cable length change */ | |
224 | SWInt = (1 << 8), /* Software-requested interrupt */ | |
225 | TxEmpty = (1 << 7), /* No Tx descriptors available */ | |
226 | RxFIFOOvr = (1 << 6), /* Rx FIFO Overflow */ | |
227 | LinkChg = (1 << 5), /* Packet underrun, or link change */ | |
228 | RxEmpty = (1 << 4), /* No Rx descriptors available */ | |
229 | TxErr = (1 << 3), /* Tx error */ | |
230 | TxOK = (1 << 2), /* Tx packet sent */ | |
231 | RxErr = (1 << 1), /* Rx error */ | |
232 | RxOK = (1 << 0), /* Rx packet received */ | |
233 | IntrResvd = (1 << 10), /* reserved, according to RealTek engineers, | |
234 | but hardware likes to raise it */ | |
235 | ||
236 | IntrAll = PciErr | TimerIntr | LenChg | SWInt | TxEmpty | | |
237 | RxFIFOOvr | LinkChg | RxEmpty | TxErr | TxOK | | |
238 | RxErr | RxOK | IntrResvd, | |
239 | ||
240 | /* C mode command register */ | |
241 | CmdReset = (1 << 4), /* Enable to reset; self-clearing */ | |
242 | RxOn = (1 << 3), /* Rx mode enable */ | |
243 | TxOn = (1 << 2), /* Tx mode enable */ | |
244 | ||
245 | /* C+ mode command register */ | |
246 | RxVlanOn = (1 << 6), /* Rx VLAN de-tagging enable */ | |
247 | RxChkSum = (1 << 5), /* Rx checksum offload enable */ | |
248 | PCIDAC = (1 << 4), /* PCI Dual Address Cycle (64-bit PCI) */ | |
249 | PCIMulRW = (1 << 3), /* Enable PCI read/write multiple */ | |
250 | CpRxOn = (1 << 1), /* Rx mode enable */ | |
251 | CpTxOn = (1 << 0), /* Tx mode enable */ | |
252 | ||
253 | /* Cfg9436 EEPROM control register */ | |
254 | Cfg9346_Lock = 0x00, /* Lock ConfigX/MII register access */ | |
255 | Cfg9346_Unlock = 0xC0, /* Unlock ConfigX/MII register access */ | |
256 | ||
257 | /* TxConfig register */ | |
258 | IFG = (1 << 25) | (1 << 24), /* standard IEEE interframe gap */ | |
259 | TxDMAShift = 8, /* DMA burst value (0-7) is shift this many bits */ | |
260 | ||
261 | /* Early Tx Threshold register */ | |
262 | TxThreshMask = 0x3f, /* Mask bits 5-0 */ | |
263 | TxThreshMax = 2048, /* Max early Tx threshold */ | |
264 | ||
265 | /* Config1 register */ | |
266 | DriverLoaded = (1 << 5), /* Software marker, driver is loaded */ | |
267 | LWACT = (1 << 4), /* LWAKE active mode */ | |
268 | PMEnable = (1 << 0), /* Enable various PM features of chip */ | |
269 | ||
270 | /* Config3 register */ | |
271 | PARMEnable = (1 << 6), /* Enable auto-loading of PHY parms */ | |
272 | MagicPacket = (1 << 5), /* Wake up when receives a Magic Packet */ | |
273 | LinkUp = (1 << 4), /* Wake up when the cable connection is re-established */ | |
274 | ||
275 | /* Config4 register */ | |
276 | LWPTN = (1 << 1), /* LWAKE Pattern */ | |
277 | LWPME = (1 << 4), /* LANWAKE vs PMEB */ | |
278 | ||
279 | /* Config5 register */ | |
280 | BWF = (1 << 6), /* Accept Broadcast wakeup frame */ | |
281 | MWF = (1 << 5), /* Accept Multicast wakeup frame */ | |
282 | UWF = (1 << 4), /* Accept Unicast wakeup frame */ | |
283 | LANWake = (1 << 1), /* Enable LANWake signal */ | |
284 | PMEStatus = (1 << 0), /* PME status can be reset by PCI RST# */ | |
285 | ||
286 | cp_norx_intr_mask = PciErr | LinkChg | TxOK | TxErr | TxEmpty, | |
287 | cp_rx_intr_mask = RxOK | RxErr | RxEmpty | RxFIFOOvr, | |
288 | cp_intr_mask = cp_rx_intr_mask | cp_norx_intr_mask, | |
289 | }; | |
290 | ||
291 | static const unsigned int cp_rx_config = | |
292 | (RX_FIFO_THRESH << RxCfgFIFOShift) | | |
293 | (RX_DMA_BURST << RxCfgDMAShift); | |
294 | ||
295 | struct cp_desc { | |
03233b90 | 296 | __le32 opts1; |
cf983019 | 297 | __le32 opts2; |
03233b90 | 298 | __le64 addr; |
1da177e4 LT |
299 | }; |
300 | ||
1da177e4 | 301 | struct cp_dma_stats { |
03233b90 AV |
302 | __le64 tx_ok; |
303 | __le64 rx_ok; | |
304 | __le64 tx_err; | |
305 | __le32 rx_err; | |
306 | __le16 rx_fifo; | |
307 | __le16 frame_align; | |
308 | __le32 tx_ok_1col; | |
309 | __le32 tx_ok_mcol; | |
310 | __le64 rx_ok_phys; | |
311 | __le64 rx_ok_bcast; | |
312 | __le32 rx_ok_mcast; | |
313 | __le16 tx_abort; | |
314 | __le16 tx_underrun; | |
ba2d3587 | 315 | } __packed; |
1da177e4 LT |
316 | |
317 | struct cp_extra_stats { | |
318 | unsigned long rx_frags; | |
319 | }; | |
320 | ||
321 | struct cp_private { | |
322 | void __iomem *regs; | |
323 | struct net_device *dev; | |
324 | spinlock_t lock; | |
325 | u32 msg_enable; | |
326 | ||
bea3348e SH |
327 | struct napi_struct napi; |
328 | ||
1da177e4 LT |
329 | struct pci_dev *pdev; |
330 | u32 rx_config; | |
331 | u16 cpcmd; | |
332 | ||
1da177e4 | 333 | struct cp_extra_stats cp_stats; |
1da177e4 | 334 | |
d03d376d FR |
335 | unsigned rx_head ____cacheline_aligned; |
336 | unsigned rx_tail; | |
1da177e4 | 337 | struct cp_desc *rx_ring; |
0ba894d4 | 338 | struct sk_buff *rx_skb[CP_RX_RING_SIZE]; |
1da177e4 LT |
339 | |
340 | unsigned tx_head ____cacheline_aligned; | |
341 | unsigned tx_tail; | |
1da177e4 | 342 | struct cp_desc *tx_ring; |
48907e39 | 343 | struct sk_buff *tx_skb[CP_TX_RING_SIZE]; |
d03d376d FR |
344 | |
345 | unsigned rx_buf_sz; | |
346 | unsigned wol_enabled : 1; /* Is Wake-on-LAN enabled? */ | |
1da177e4 | 347 | |
d03d376d | 348 | dma_addr_t ring_dma; |
1da177e4 LT |
349 | |
350 | struct mii_if_info mii_if; | |
351 | }; | |
352 | ||
353 | #define cpr8(reg) readb(cp->regs + (reg)) | |
354 | #define cpr16(reg) readw(cp->regs + (reg)) | |
355 | #define cpr32(reg) readl(cp->regs + (reg)) | |
356 | #define cpw8(reg,val) writeb((val), cp->regs + (reg)) | |
357 | #define cpw16(reg,val) writew((val), cp->regs + (reg)) | |
358 | #define cpw32(reg,val) writel((val), cp->regs + (reg)) | |
359 | #define cpw8_f(reg,val) do { \ | |
360 | writeb((val), cp->regs + (reg)); \ | |
361 | readb(cp->regs + (reg)); \ | |
362 | } while (0) | |
363 | #define cpw16_f(reg,val) do { \ | |
364 | writew((val), cp->regs + (reg)); \ | |
365 | readw(cp->regs + (reg)); \ | |
366 | } while (0) | |
367 | #define cpw32_f(reg,val) do { \ | |
368 | writel((val), cp->regs + (reg)); \ | |
369 | readl(cp->regs + (reg)); \ | |
370 | } while (0) | |
371 | ||
372 | ||
373 | static void __cp_set_rx_mode (struct net_device *dev); | |
374 | static void cp_tx (struct cp_private *cp); | |
375 | static void cp_clean_rings (struct cp_private *cp); | |
7502cd10 SK |
376 | #ifdef CONFIG_NET_POLL_CONTROLLER |
377 | static void cp_poll_controller(struct net_device *dev); | |
378 | #endif | |
722fdb33 PC |
379 | static int cp_get_eeprom_len(struct net_device *dev); |
380 | static int cp_get_eeprom(struct net_device *dev, | |
381 | struct ethtool_eeprom *eeprom, u8 *data); | |
382 | static int cp_set_eeprom(struct net_device *dev, | |
383 | struct ethtool_eeprom *eeprom, u8 *data); | |
1da177e4 | 384 | |
a3aa1884 | 385 | static DEFINE_PCI_DEVICE_TABLE(cp_pci_tbl) = { |
cccb20d3 FR |
386 | { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, PCI_DEVICE_ID_REALTEK_8139), }, |
387 | { PCI_DEVICE(PCI_VENDOR_ID_TTTECH, PCI_DEVICE_ID_TTTECH_MC322), }, | |
1da177e4 LT |
388 | { }, |
389 | }; | |
390 | MODULE_DEVICE_TABLE(pci, cp_pci_tbl); | |
391 | ||
392 | static struct { | |
393 | const char str[ETH_GSTRING_LEN]; | |
394 | } ethtool_stats_keys[] = { | |
395 | { "tx_ok" }, | |
396 | { "rx_ok" }, | |
397 | { "tx_err" }, | |
398 | { "rx_err" }, | |
399 | { "rx_fifo" }, | |
400 | { "frame_align" }, | |
401 | { "tx_ok_1col" }, | |
402 | { "tx_ok_mcol" }, | |
403 | { "rx_ok_phys" }, | |
404 | { "rx_ok_bcast" }, | |
405 | { "rx_ok_mcast" }, | |
406 | { "tx_abort" }, | |
407 | { "tx_underrun" }, | |
408 | { "rx_frags" }, | |
409 | }; | |
410 | ||
411 | ||
1da177e4 LT |
412 | static inline void cp_set_rxbufsize (struct cp_private *cp) |
413 | { | |
414 | unsigned int mtu = cp->dev->mtu; | |
f3b197ac | 415 | |
1da177e4 LT |
416 | if (mtu > ETH_DATA_LEN) |
417 | /* MTU + ethernet header + FCS + optional VLAN tag */ | |
418 | cp->rx_buf_sz = mtu + ETH_HLEN + 8; | |
419 | else | |
420 | cp->rx_buf_sz = PKT_BUF_SZ; | |
421 | } | |
422 | ||
423 | static inline void cp_rx_skb (struct cp_private *cp, struct sk_buff *skb, | |
424 | struct cp_desc *desc) | |
425 | { | |
6864ddb2 | 426 | u32 opts2 = le32_to_cpu(desc->opts2); |
427 | ||
1da177e4 LT |
428 | skb->protocol = eth_type_trans (skb, cp->dev); |
429 | ||
237225f7 PZ |
430 | cp->dev->stats.rx_packets++; |
431 | cp->dev->stats.rx_bytes += skb->len; | |
1da177e4 | 432 | |
6864ddb2 | 433 | if (opts2 & RxVlanTagged) |
86a9bad3 | 434 | __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), swab16(opts2 & 0xffff)); |
6864ddb2 | 435 | |
436 | napi_gro_receive(&cp->napi, skb); | |
1da177e4 LT |
437 | } |
438 | ||
439 | static void cp_rx_err_acct (struct cp_private *cp, unsigned rx_tail, | |
440 | u32 status, u32 len) | |
441 | { | |
b4f18b3f JP |
442 | netif_dbg(cp, rx_err, cp->dev, "rx err, slot %d status 0x%x len %d\n", |
443 | rx_tail, status, len); | |
237225f7 | 444 | cp->dev->stats.rx_errors++; |
1da177e4 | 445 | if (status & RxErrFrame) |
237225f7 | 446 | cp->dev->stats.rx_frame_errors++; |
1da177e4 | 447 | if (status & RxErrCRC) |
237225f7 | 448 | cp->dev->stats.rx_crc_errors++; |
1da177e4 | 449 | if ((status & RxErrRunt) || (status & RxErrLong)) |
237225f7 | 450 | cp->dev->stats.rx_length_errors++; |
1da177e4 | 451 | if ((status & (FirstFrag | LastFrag)) != (FirstFrag | LastFrag)) |
237225f7 | 452 | cp->dev->stats.rx_length_errors++; |
1da177e4 | 453 | if (status & RxErrFIFO) |
237225f7 | 454 | cp->dev->stats.rx_fifo_errors++; |
1da177e4 LT |
455 | } |
456 | ||
457 | static inline unsigned int cp_rx_csum_ok (u32 status) | |
458 | { | |
459 | unsigned int protocol = (status >> 16) & 0x3; | |
f3b197ac | 460 | |
24b7ea9f SW |
461 | if (((protocol == RxProtoTCP) && !(status & TCPFail)) || |
462 | ((protocol == RxProtoUDP) && !(status & UDPFail))) | |
1da177e4 | 463 | return 1; |
24b7ea9f SW |
464 | else |
465 | return 0; | |
1da177e4 LT |
466 | } |
467 | ||
bea3348e | 468 | static int cp_rx_poll(struct napi_struct *napi, int budget) |
1da177e4 | 469 | { |
bea3348e SH |
470 | struct cp_private *cp = container_of(napi, struct cp_private, napi); |
471 | struct net_device *dev = cp->dev; | |
472 | unsigned int rx_tail = cp->rx_tail; | |
473 | int rx; | |
1da177e4 LT |
474 | |
475 | rx_status_loop: | |
476 | rx = 0; | |
477 | cpw16(IntrStatus, cp_rx_intr_mask); | |
478 | ||
479 | while (1) { | |
480 | u32 status, len; | |
1eec0e84 | 481 | dma_addr_t mapping, new_mapping; |
1da177e4 LT |
482 | struct sk_buff *skb, *new_skb; |
483 | struct cp_desc *desc; | |
839d1624 | 484 | const unsigned buflen = cp->rx_buf_sz; |
1da177e4 | 485 | |
0ba894d4 | 486 | skb = cp->rx_skb[rx_tail]; |
5d9428de | 487 | BUG_ON(!skb); |
1da177e4 LT |
488 | |
489 | desc = &cp->rx_ring[rx_tail]; | |
490 | status = le32_to_cpu(desc->opts1); | |
491 | if (status & DescOwn) | |
492 | break; | |
493 | ||
494 | len = (status & 0x1fff) - 4; | |
3598b57b | 495 | mapping = le64_to_cpu(desc->addr); |
1da177e4 LT |
496 | |
497 | if ((status & (FirstFrag | LastFrag)) != (FirstFrag | LastFrag)) { | |
498 | /* we don't support incoming fragmented frames. | |
499 | * instead, we attempt to ensure that the | |
500 | * pre-allocated RX skbs are properly sized such | |
501 | * that RX fragments are never encountered | |
502 | */ | |
503 | cp_rx_err_acct(cp, rx_tail, status, len); | |
237225f7 | 504 | dev->stats.rx_dropped++; |
1da177e4 LT |
505 | cp->cp_stats.rx_frags++; |
506 | goto rx_next; | |
507 | } | |
508 | ||
509 | if (status & (RxError | RxErrFIFO)) { | |
510 | cp_rx_err_acct(cp, rx_tail, status, len); | |
511 | goto rx_next; | |
512 | } | |
513 | ||
b4f18b3f JP |
514 | netif_dbg(cp, rx_status, dev, "rx slot %d status 0x%x len %d\n", |
515 | rx_tail, status, len); | |
1da177e4 | 516 | |
89d71a66 | 517 | new_skb = netdev_alloc_skb_ip_align(dev, buflen); |
1da177e4 | 518 | if (!new_skb) { |
237225f7 | 519 | dev->stats.rx_dropped++; |
1da177e4 LT |
520 | goto rx_next; |
521 | } | |
522 | ||
1eec0e84 NH |
523 | new_mapping = dma_map_single(&cp->pdev->dev, new_skb->data, buflen, |
524 | PCI_DMA_FROMDEVICE); | |
525 | if (dma_mapping_error(&cp->pdev->dev, new_mapping)) { | |
526 | dev->stats.rx_dropped++; | |
6c1a4bb8 | 527 | kfree_skb(new_skb); |
1eec0e84 NH |
528 | goto rx_next; |
529 | } | |
530 | ||
6cc92cdd | 531 | dma_unmap_single(&cp->pdev->dev, mapping, |
1da177e4 LT |
532 | buflen, PCI_DMA_FROMDEVICE); |
533 | ||
534 | /* Handle checksum offloading for incoming packets. */ | |
535 | if (cp_rx_csum_ok(status)) | |
536 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
537 | else | |
bc8acf2c | 538 | skb_checksum_none_assert(skb); |
1da177e4 LT |
539 | |
540 | skb_put(skb, len); | |
541 | ||
0ba894d4 | 542 | cp->rx_skb[rx_tail] = new_skb; |
1da177e4 LT |
543 | |
544 | cp_rx_skb(cp, skb, desc); | |
545 | rx++; | |
1eec0e84 | 546 | mapping = new_mapping; |
1da177e4 LT |
547 | |
548 | rx_next: | |
549 | cp->rx_ring[rx_tail].opts2 = 0; | |
550 | cp->rx_ring[rx_tail].addr = cpu_to_le64(mapping); | |
551 | if (rx_tail == (CP_RX_RING_SIZE - 1)) | |
552 | desc->opts1 = cpu_to_le32(DescOwn | RingEnd | | |
553 | cp->rx_buf_sz); | |
554 | else | |
555 | desc->opts1 = cpu_to_le32(DescOwn | cp->rx_buf_sz); | |
556 | rx_tail = NEXT_RX(rx_tail); | |
557 | ||
bea3348e | 558 | if (rx >= budget) |
1da177e4 LT |
559 | break; |
560 | } | |
561 | ||
562 | cp->rx_tail = rx_tail; | |
563 | ||
1da177e4 LT |
564 | /* if we did not reach work limit, then we're done with |
565 | * this round of polling | |
566 | */ | |
bea3348e | 567 | if (rx < budget) { |
d15e9c4d FR |
568 | unsigned long flags; |
569 | ||
1da177e4 LT |
570 | if (cpr16(IntrStatus) & cp_rx_intr_mask) |
571 | goto rx_status_loop; | |
572 | ||
2e71a6f8 | 573 | napi_gro_flush(napi, false); |
bea3348e | 574 | spin_lock_irqsave(&cp->lock, flags); |
288379f0 | 575 | __napi_complete(napi); |
349124a0 | 576 | cpw16_f(IntrMask, cp_intr_mask); |
bea3348e | 577 | spin_unlock_irqrestore(&cp->lock, flags); |
1da177e4 LT |
578 | } |
579 | ||
bea3348e | 580 | return rx; |
1da177e4 LT |
581 | } |
582 | ||
7d12e780 | 583 | static irqreturn_t cp_interrupt (int irq, void *dev_instance) |
1da177e4 LT |
584 | { |
585 | struct net_device *dev = dev_instance; | |
586 | struct cp_private *cp; | |
83c34fd0 | 587 | int handled = 0; |
1da177e4 LT |
588 | u16 status; |
589 | ||
590 | if (unlikely(dev == NULL)) | |
591 | return IRQ_NONE; | |
592 | cp = netdev_priv(dev); | |
593 | ||
83c34fd0 JG |
594 | spin_lock(&cp->lock); |
595 | ||
1da177e4 LT |
596 | status = cpr16(IntrStatus); |
597 | if (!status || (status == 0xFFFF)) | |
83c34fd0 JG |
598 | goto out_unlock; |
599 | ||
600 | handled = 1; | |
1da177e4 | 601 | |
b4f18b3f JP |
602 | netif_dbg(cp, intr, dev, "intr, status %04x cmd %02x cpcmd %04x\n", |
603 | status, cpr8(Cmd), cpr16(CpCmd)); | |
1da177e4 LT |
604 | |
605 | cpw16(IntrStatus, status & ~cp_rx_intr_mask); | |
606 | ||
1da177e4 LT |
607 | /* close possible race's with dev_close */ |
608 | if (unlikely(!netif_running(dev))) { | |
609 | cpw16(IntrMask, 0); | |
83c34fd0 | 610 | goto out_unlock; |
1da177e4 LT |
611 | } |
612 | ||
613 | if (status & (RxOK | RxErr | RxEmpty | RxFIFOOvr)) | |
288379f0 | 614 | if (napi_schedule_prep(&cp->napi)) { |
1da177e4 | 615 | cpw16_f(IntrMask, cp_norx_intr_mask); |
288379f0 | 616 | __napi_schedule(&cp->napi); |
1da177e4 LT |
617 | } |
618 | ||
619 | if (status & (TxOK | TxErr | TxEmpty | SWInt)) | |
620 | cp_tx(cp); | |
621 | if (status & LinkChg) | |
2501f843 | 622 | mii_check_media(&cp->mii_if, netif_msg_link(cp), false); |
1da177e4 | 623 | |
1da177e4 LT |
624 | |
625 | if (status & PciErr) { | |
626 | u16 pci_status; | |
627 | ||
628 | pci_read_config_word(cp->pdev, PCI_STATUS, &pci_status); | |
629 | pci_write_config_word(cp->pdev, PCI_STATUS, pci_status); | |
b4f18b3f JP |
630 | netdev_err(dev, "PCI bus error, status=%04x, PCI status=%04x\n", |
631 | status, pci_status); | |
1da177e4 LT |
632 | |
633 | /* TODO: reset hardware */ | |
634 | } | |
635 | ||
83c34fd0 JG |
636 | out_unlock: |
637 | spin_unlock(&cp->lock); | |
638 | ||
639 | return IRQ_RETVAL(handled); | |
1da177e4 LT |
640 | } |
641 | ||
7502cd10 SK |
642 | #ifdef CONFIG_NET_POLL_CONTROLLER |
643 | /* | |
644 | * Polling receive - used by netconsole and other diagnostic tools | |
645 | * to allow network i/o with interrupts disabled. | |
646 | */ | |
647 | static void cp_poll_controller(struct net_device *dev) | |
648 | { | |
a69afe32 FR |
649 | struct cp_private *cp = netdev_priv(dev); |
650 | const int irq = cp->pdev->irq; | |
651 | ||
652 | disable_irq(irq); | |
653 | cp_interrupt(irq, dev); | |
654 | enable_irq(irq); | |
7502cd10 SK |
655 | } |
656 | #endif | |
657 | ||
1da177e4 LT |
658 | static void cp_tx (struct cp_private *cp) |
659 | { | |
660 | unsigned tx_head = cp->tx_head; | |
661 | unsigned tx_tail = cp->tx_tail; | |
871f0d4c | 662 | unsigned bytes_compl = 0, pkts_compl = 0; |
1da177e4 LT |
663 | |
664 | while (tx_tail != tx_head) { | |
3598b57b | 665 | struct cp_desc *txd = cp->tx_ring + tx_tail; |
1da177e4 LT |
666 | struct sk_buff *skb; |
667 | u32 status; | |
668 | ||
669 | rmb(); | |
3598b57b | 670 | status = le32_to_cpu(txd->opts1); |
1da177e4 LT |
671 | if (status & DescOwn) |
672 | break; | |
673 | ||
48907e39 | 674 | skb = cp->tx_skb[tx_tail]; |
5d9428de | 675 | BUG_ON(!skb); |
1da177e4 | 676 | |
6cc92cdd | 677 | dma_unmap_single(&cp->pdev->dev, le64_to_cpu(txd->addr), |
48907e39 FR |
678 | le32_to_cpu(txd->opts1) & 0xffff, |
679 | PCI_DMA_TODEVICE); | |
1da177e4 LT |
680 | |
681 | if (status & LastFrag) { | |
682 | if (status & (TxError | TxFIFOUnder)) { | |
b4f18b3f JP |
683 | netif_dbg(cp, tx_err, cp->dev, |
684 | "tx err, status 0x%x\n", status); | |
237225f7 | 685 | cp->dev->stats.tx_errors++; |
1da177e4 | 686 | if (status & TxOWC) |
237225f7 | 687 | cp->dev->stats.tx_window_errors++; |
1da177e4 | 688 | if (status & TxMaxCol) |
237225f7 | 689 | cp->dev->stats.tx_aborted_errors++; |
1da177e4 | 690 | if (status & TxLinkFail) |
237225f7 | 691 | cp->dev->stats.tx_carrier_errors++; |
1da177e4 | 692 | if (status & TxFIFOUnder) |
237225f7 | 693 | cp->dev->stats.tx_fifo_errors++; |
1da177e4 | 694 | } else { |
237225f7 | 695 | cp->dev->stats.collisions += |
1da177e4 | 696 | ((status >> TxColCntShift) & TxColCntMask); |
237225f7 PZ |
697 | cp->dev->stats.tx_packets++; |
698 | cp->dev->stats.tx_bytes += skb->len; | |
b4f18b3f JP |
699 | netif_dbg(cp, tx_done, cp->dev, |
700 | "tx done, slot %d\n", tx_tail); | |
1da177e4 | 701 | } |
ac3e7d9b YY |
702 | bytes_compl += skb->len; |
703 | pkts_compl++; | |
1da177e4 LT |
704 | dev_kfree_skb_irq(skb); |
705 | } | |
706 | ||
48907e39 | 707 | cp->tx_skb[tx_tail] = NULL; |
1da177e4 LT |
708 | |
709 | tx_tail = NEXT_TX(tx_tail); | |
710 | } | |
711 | ||
712 | cp->tx_tail = tx_tail; | |
713 | ||
871f0d4c | 714 | netdev_completed_queue(cp->dev, pkts_compl, bytes_compl); |
1da177e4 LT |
715 | if (TX_BUFFS_AVAIL(cp) > (MAX_SKB_FRAGS + 1)) |
716 | netif_wake_queue(cp->dev); | |
717 | } | |
718 | ||
6864ddb2 | 719 | static inline u32 cp_tx_vlan_tag(struct sk_buff *skb) |
720 | { | |
721 | return vlan_tx_tag_present(skb) ? | |
722 | TxVlanTag | swab16(vlan_tx_tag_get(skb)) : 0x00; | |
723 | } | |
724 | ||
1eec0e84 NH |
725 | static void unwind_tx_frag_mapping(struct cp_private *cp, struct sk_buff *skb, |
726 | int first, int entry_last) | |
727 | { | |
728 | int frag, index; | |
729 | struct cp_desc *txd; | |
730 | skb_frag_t *this_frag; | |
731 | for (frag = 0; frag+first < entry_last; frag++) { | |
732 | index = first+frag; | |
733 | cp->tx_skb[index] = NULL; | |
734 | txd = &cp->tx_ring[index]; | |
735 | this_frag = &skb_shinfo(skb)->frags[frag]; | |
736 | dma_unmap_single(&cp->pdev->dev, le64_to_cpu(txd->addr), | |
737 | skb_frag_size(this_frag), PCI_DMA_TODEVICE); | |
738 | } | |
739 | } | |
740 | ||
61357325 SH |
741 | static netdev_tx_t cp_start_xmit (struct sk_buff *skb, |
742 | struct net_device *dev) | |
1da177e4 LT |
743 | { |
744 | struct cp_private *cp = netdev_priv(dev); | |
745 | unsigned entry; | |
fcec3456 | 746 | u32 eor, flags; |
553af567 | 747 | unsigned long intr_flags; |
6864ddb2 | 748 | __le32 opts2; |
fcec3456 | 749 | int mss = 0; |
1da177e4 | 750 | |
553af567 | 751 | spin_lock_irqsave(&cp->lock, intr_flags); |
1da177e4 LT |
752 | |
753 | /* This is a hard error, log it. */ | |
754 | if (TX_BUFFS_AVAIL(cp) <= (skb_shinfo(skb)->nr_frags + 1)) { | |
755 | netif_stop_queue(dev); | |
553af567 | 756 | spin_unlock_irqrestore(&cp->lock, intr_flags); |
b4f18b3f | 757 | netdev_err(dev, "BUG! Tx Ring full when queue awake!\n"); |
5b548140 | 758 | return NETDEV_TX_BUSY; |
1da177e4 LT |
759 | } |
760 | ||
1da177e4 LT |
761 | entry = cp->tx_head; |
762 | eor = (entry == (CP_TX_RING_SIZE - 1)) ? RingEnd : 0; | |
044a890c | 763 | mss = skb_shinfo(skb)->gso_size; |
fcec3456 | 764 | |
6864ddb2 | 765 | opts2 = cpu_to_le32(cp_tx_vlan_tag(skb)); |
766 | ||
1da177e4 LT |
767 | if (skb_shinfo(skb)->nr_frags == 0) { |
768 | struct cp_desc *txd = &cp->tx_ring[entry]; | |
769 | u32 len; | |
770 | dma_addr_t mapping; | |
771 | ||
772 | len = skb->len; | |
6cc92cdd | 773 | mapping = dma_map_single(&cp->pdev->dev, skb->data, len, PCI_DMA_TODEVICE); |
1eec0e84 NH |
774 | if (dma_mapping_error(&cp->pdev->dev, mapping)) |
775 | goto out_dma_error; | |
776 | ||
6864ddb2 | 777 | txd->opts2 = opts2; |
1da177e4 LT |
778 | txd->addr = cpu_to_le64(mapping); |
779 | wmb(); | |
780 | ||
fcec3456 JG |
781 | flags = eor | len | DescOwn | FirstFrag | LastFrag; |
782 | ||
783 | if (mss) | |
784 | flags |= LargeSend | ((mss & MSSMask) << MSSShift); | |
84fa7933 | 785 | else if (skb->ip_summed == CHECKSUM_PARTIAL) { |
eddc9ec5 | 786 | const struct iphdr *ip = ip_hdr(skb); |
1da177e4 | 787 | if (ip->protocol == IPPROTO_TCP) |
fcec3456 | 788 | flags |= IPCS | TCPCS; |
1da177e4 | 789 | else if (ip->protocol == IPPROTO_UDP) |
fcec3456 | 790 | flags |= IPCS | UDPCS; |
1da177e4 | 791 | else |
5734418d | 792 | WARN_ON(1); /* we need a WARN() */ |
fcec3456 JG |
793 | } |
794 | ||
795 | txd->opts1 = cpu_to_le32(flags); | |
1da177e4 LT |
796 | wmb(); |
797 | ||
48907e39 | 798 | cp->tx_skb[entry] = skb; |
1da177e4 LT |
799 | entry = NEXT_TX(entry); |
800 | } else { | |
801 | struct cp_desc *txd; | |
802 | u32 first_len, first_eor; | |
803 | dma_addr_t first_mapping; | |
804 | int frag, first_entry = entry; | |
eddc9ec5 | 805 | const struct iphdr *ip = ip_hdr(skb); |
1da177e4 LT |
806 | |
807 | /* We must give this initial chunk to the device last. | |
808 | * Otherwise we could race with the device. | |
809 | */ | |
810 | first_eor = eor; | |
811 | first_len = skb_headlen(skb); | |
6cc92cdd | 812 | first_mapping = dma_map_single(&cp->pdev->dev, skb->data, |
1da177e4 | 813 | first_len, PCI_DMA_TODEVICE); |
1eec0e84 NH |
814 | if (dma_mapping_error(&cp->pdev->dev, first_mapping)) |
815 | goto out_dma_error; | |
816 | ||
48907e39 | 817 | cp->tx_skb[entry] = skb; |
1da177e4 LT |
818 | entry = NEXT_TX(entry); |
819 | ||
820 | for (frag = 0; frag < skb_shinfo(skb)->nr_frags; frag++) { | |
9e903e08 | 821 | const skb_frag_t *this_frag = &skb_shinfo(skb)->frags[frag]; |
1da177e4 LT |
822 | u32 len; |
823 | u32 ctrl; | |
824 | dma_addr_t mapping; | |
825 | ||
9e903e08 | 826 | len = skb_frag_size(this_frag); |
6cc92cdd | 827 | mapping = dma_map_single(&cp->pdev->dev, |
deb8a069 | 828 | skb_frag_address(this_frag), |
1da177e4 | 829 | len, PCI_DMA_TODEVICE); |
1eec0e84 NH |
830 | if (dma_mapping_error(&cp->pdev->dev, mapping)) { |
831 | unwind_tx_frag_mapping(cp, skb, first_entry, entry); | |
832 | goto out_dma_error; | |
833 | } | |
834 | ||
1da177e4 LT |
835 | eor = (entry == (CP_TX_RING_SIZE - 1)) ? RingEnd : 0; |
836 | ||
fcec3456 JG |
837 | ctrl = eor | len | DescOwn; |
838 | ||
839 | if (mss) | |
840 | ctrl |= LargeSend | | |
841 | ((mss & MSSMask) << MSSShift); | |
84fa7933 | 842 | else if (skb->ip_summed == CHECKSUM_PARTIAL) { |
1da177e4 | 843 | if (ip->protocol == IPPROTO_TCP) |
fcec3456 | 844 | ctrl |= IPCS | TCPCS; |
1da177e4 | 845 | else if (ip->protocol == IPPROTO_UDP) |
fcec3456 | 846 | ctrl |= IPCS | UDPCS; |
1da177e4 LT |
847 | else |
848 | BUG(); | |
fcec3456 | 849 | } |
1da177e4 LT |
850 | |
851 | if (frag == skb_shinfo(skb)->nr_frags - 1) | |
852 | ctrl |= LastFrag; | |
853 | ||
854 | txd = &cp->tx_ring[entry]; | |
6864ddb2 | 855 | txd->opts2 = opts2; |
1da177e4 LT |
856 | txd->addr = cpu_to_le64(mapping); |
857 | wmb(); | |
858 | ||
859 | txd->opts1 = cpu_to_le32(ctrl); | |
860 | wmb(); | |
861 | ||
48907e39 | 862 | cp->tx_skb[entry] = skb; |
1da177e4 LT |
863 | entry = NEXT_TX(entry); |
864 | } | |
865 | ||
866 | txd = &cp->tx_ring[first_entry]; | |
6864ddb2 | 867 | txd->opts2 = opts2; |
1da177e4 LT |
868 | txd->addr = cpu_to_le64(first_mapping); |
869 | wmb(); | |
870 | ||
84fa7933 | 871 | if (skb->ip_summed == CHECKSUM_PARTIAL) { |
1da177e4 LT |
872 | if (ip->protocol == IPPROTO_TCP) |
873 | txd->opts1 = cpu_to_le32(first_eor | first_len | | |
874 | FirstFrag | DescOwn | | |
875 | IPCS | TCPCS); | |
876 | else if (ip->protocol == IPPROTO_UDP) | |
877 | txd->opts1 = cpu_to_le32(first_eor | first_len | | |
878 | FirstFrag | DescOwn | | |
879 | IPCS | UDPCS); | |
880 | else | |
881 | BUG(); | |
882 | } else | |
883 | txd->opts1 = cpu_to_le32(first_eor | first_len | | |
884 | FirstFrag | DescOwn); | |
885 | wmb(); | |
886 | } | |
887 | cp->tx_head = entry; | |
871f0d4c DW |
888 | |
889 | netdev_sent_queue(dev, skb->len); | |
b4f18b3f JP |
890 | netif_dbg(cp, tx_queued, cp->dev, "tx queued, slot %d, skblen %d\n", |
891 | entry, skb->len); | |
1da177e4 LT |
892 | if (TX_BUFFS_AVAIL(cp) <= (MAX_SKB_FRAGS + 1)) |
893 | netif_stop_queue(dev); | |
894 | ||
1eec0e84 | 895 | out_unlock: |
553af567 | 896 | spin_unlock_irqrestore(&cp->lock, intr_flags); |
1da177e4 LT |
897 | |
898 | cpw8(TxPoll, NormalTxPoll); | |
1da177e4 | 899 | |
6ed10654 | 900 | return NETDEV_TX_OK; |
1eec0e84 | 901 | out_dma_error: |
16767ec6 | 902 | dev_kfree_skb_any(skb); |
1eec0e84 NH |
903 | cp->dev->stats.tx_dropped++; |
904 | goto out_unlock; | |
1da177e4 LT |
905 | } |
906 | ||
907 | /* Set or clear the multicast filter for this adaptor. | |
908 | This routine is not state sensitive and need not be SMP locked. */ | |
909 | ||
910 | static void __cp_set_rx_mode (struct net_device *dev) | |
911 | { | |
912 | struct cp_private *cp = netdev_priv(dev); | |
913 | u32 mc_filter[2]; /* Multicast hash filter */ | |
a56ed41d | 914 | int rx_mode; |
1da177e4 LT |
915 | |
916 | /* Note: do not reorder, GCC is clever about common statements. */ | |
917 | if (dev->flags & IFF_PROMISC) { | |
918 | /* Unconditionally log net taps. */ | |
1da177e4 LT |
919 | rx_mode = |
920 | AcceptBroadcast | AcceptMulticast | AcceptMyPhys | | |
921 | AcceptAllPhys; | |
922 | mc_filter[1] = mc_filter[0] = 0xffffffff; | |
a56ed41d | 923 | } else if ((netdev_mc_count(dev) > multicast_filter_limit) || |
8e95a202 | 924 | (dev->flags & IFF_ALLMULTI)) { |
1da177e4 LT |
925 | /* Too many to filter perfectly -- accept all multicasts. */ |
926 | rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys; | |
927 | mc_filter[1] = mc_filter[0] = 0xffffffff; | |
928 | } else { | |
22bedad3 | 929 | struct netdev_hw_addr *ha; |
1da177e4 LT |
930 | rx_mode = AcceptBroadcast | AcceptMyPhys; |
931 | mc_filter[1] = mc_filter[0] = 0; | |
22bedad3 JP |
932 | netdev_for_each_mc_addr(ha, dev) { |
933 | int bit_nr = ether_crc(ETH_ALEN, ha->addr) >> 26; | |
1da177e4 LT |
934 | |
935 | mc_filter[bit_nr >> 5] |= 1 << (bit_nr & 31); | |
936 | rx_mode |= AcceptMulticast; | |
937 | } | |
938 | } | |
939 | ||
940 | /* We can safely update without stopping the chip. */ | |
f872b237 JW |
941 | cp->rx_config = cp_rx_config | rx_mode; |
942 | cpw32_f(RxConfig, cp->rx_config); | |
943 | ||
1da177e4 LT |
944 | cpw32_f (MAR0 + 0, mc_filter[0]); |
945 | cpw32_f (MAR0 + 4, mc_filter[1]); | |
946 | } | |
947 | ||
948 | static void cp_set_rx_mode (struct net_device *dev) | |
949 | { | |
950 | unsigned long flags; | |
951 | struct cp_private *cp = netdev_priv(dev); | |
952 | ||
953 | spin_lock_irqsave (&cp->lock, flags); | |
954 | __cp_set_rx_mode(dev); | |
955 | spin_unlock_irqrestore (&cp->lock, flags); | |
956 | } | |
957 | ||
958 | static void __cp_get_stats(struct cp_private *cp) | |
959 | { | |
960 | /* only lower 24 bits valid; write any value to clear */ | |
237225f7 | 961 | cp->dev->stats.rx_missed_errors += (cpr32 (RxMissed) & 0xffffff); |
1da177e4 LT |
962 | cpw32 (RxMissed, 0); |
963 | } | |
964 | ||
965 | static struct net_device_stats *cp_get_stats(struct net_device *dev) | |
966 | { | |
967 | struct cp_private *cp = netdev_priv(dev); | |
968 | unsigned long flags; | |
969 | ||
970 | /* The chip only need report frame silently dropped. */ | |
971 | spin_lock_irqsave(&cp->lock, flags); | |
972 | if (netif_running(dev) && netif_device_present(dev)) | |
973 | __cp_get_stats(cp); | |
974 | spin_unlock_irqrestore(&cp->lock, flags); | |
975 | ||
237225f7 | 976 | return &dev->stats; |
1da177e4 LT |
977 | } |
978 | ||
979 | static void cp_stop_hw (struct cp_private *cp) | |
980 | { | |
981 | cpw16(IntrStatus, ~(cpr16(IntrStatus))); | |
982 | cpw16_f(IntrMask, 0); | |
983 | cpw8(Cmd, 0); | |
984 | cpw16_f(CpCmd, 0); | |
985 | cpw16_f(IntrStatus, ~(cpr16(IntrStatus))); | |
986 | ||
987 | cp->rx_tail = 0; | |
988 | cp->tx_head = cp->tx_tail = 0; | |
871f0d4c DW |
989 | |
990 | netdev_reset_queue(cp->dev); | |
1da177e4 LT |
991 | } |
992 | ||
993 | static void cp_reset_hw (struct cp_private *cp) | |
994 | { | |
995 | unsigned work = 1000; | |
996 | ||
997 | cpw8(Cmd, CmdReset); | |
998 | ||
999 | while (work--) { | |
1000 | if (!(cpr8(Cmd) & CmdReset)) | |
1001 | return; | |
1002 | ||
3173c890 | 1003 | schedule_timeout_uninterruptible(10); |
1da177e4 LT |
1004 | } |
1005 | ||
b4f18b3f | 1006 | netdev_err(cp->dev, "hardware reset timeout\n"); |
1da177e4 LT |
1007 | } |
1008 | ||
1009 | static inline void cp_start_hw (struct cp_private *cp) | |
1010 | { | |
a9dbe40f DW |
1011 | dma_addr_t ring_dma; |
1012 | ||
1da177e4 | 1013 | cpw16(CpCmd, cp->cpcmd); |
a9dbe40f DW |
1014 | |
1015 | /* | |
1016 | * These (at least TxRingAddr) need to be configured after the | |
1017 | * corresponding bits in CpCmd are enabled. Datasheet v1.6 §6.33 | |
1018 | * (C+ Command Register) recommends that these and more be configured | |
1019 | * *after* the [RT]xEnable bits in CpCmd are set. And on some hardware | |
1020 | * it's been observed that the TxRingAddr is actually reset to garbage | |
1021 | * when C+ mode Tx is enabled in CpCmd. | |
1022 | */ | |
1023 | cpw32_f(HiTxRingAddr, 0); | |
1024 | cpw32_f(HiTxRingAddr + 4, 0); | |
1025 | ||
1026 | ring_dma = cp->ring_dma; | |
1027 | cpw32_f(RxRingAddr, ring_dma & 0xffffffff); | |
1028 | cpw32_f(RxRingAddr + 4, (ring_dma >> 16) >> 16); | |
1029 | ||
1030 | ring_dma += sizeof(struct cp_desc) * CP_RX_RING_SIZE; | |
1031 | cpw32_f(TxRingAddr, ring_dma & 0xffffffff); | |
1032 | cpw32_f(TxRingAddr + 4, (ring_dma >> 16) >> 16); | |
1033 | ||
1034 | /* | |
1035 | * Strictly speaking, the datasheet says this should be enabled | |
1036 | * *before* setting the descriptor addresses. But what, then, would | |
1037 | * prevent it from doing DMA to random unconfigured addresses? | |
1038 | * This variant appears to work fine. | |
1039 | */ | |
1da177e4 | 1040 | cpw8(Cmd, RxOn | TxOn); |
871f0d4c DW |
1041 | |
1042 | netdev_reset_queue(cp->dev); | |
1da177e4 LT |
1043 | } |
1044 | ||
a8c9cb10 JW |
1045 | static void cp_enable_irq(struct cp_private *cp) |
1046 | { | |
1047 | cpw16_f(IntrMask, cp_intr_mask); | |
1048 | } | |
1049 | ||
1da177e4 LT |
1050 | static void cp_init_hw (struct cp_private *cp) |
1051 | { | |
1052 | struct net_device *dev = cp->dev; | |
1da177e4 LT |
1053 | |
1054 | cp_reset_hw(cp); | |
1055 | ||
1056 | cpw8_f (Cfg9346, Cfg9346_Unlock); | |
1057 | ||
1058 | /* Restore our idea of the MAC address. */ | |
03233b90 AV |
1059 | cpw32_f (MAC0 + 0, le32_to_cpu (*(__le32 *) (dev->dev_addr + 0))); |
1060 | cpw32_f (MAC0 + 4, le32_to_cpu (*(__le32 *) (dev->dev_addr + 4))); | |
1da177e4 LT |
1061 | |
1062 | cp_start_hw(cp); | |
1063 | cpw8(TxThresh, 0x06); /* XXX convert magic num to a constant */ | |
1064 | ||
1065 | __cp_set_rx_mode(dev); | |
1066 | cpw32_f (TxConfig, IFG | (TX_DMA_BURST << TxDMAShift)); | |
1067 | ||
1068 | cpw8(Config1, cpr8(Config1) | DriverLoaded | PMEnable); | |
1069 | /* Disable Wake-on-LAN. Can be turned on with ETHTOOL_SWOL */ | |
1070 | cpw8(Config3, PARMEnable); | |
1071 | cp->wol_enabled = 0; | |
1072 | ||
f3b197ac | 1073 | cpw8(Config5, cpr8(Config5) & PMEStatus); |
1da177e4 | 1074 | |
1da177e4 LT |
1075 | cpw16(MultiIntr, 0); |
1076 | ||
1da177e4 LT |
1077 | cpw8_f(Cfg9346, Cfg9346_Lock); |
1078 | } | |
1079 | ||
a52be1cb | 1080 | static int cp_refill_rx(struct cp_private *cp) |
1da177e4 | 1081 | { |
a52be1cb | 1082 | struct net_device *dev = cp->dev; |
1da177e4 LT |
1083 | unsigned i; |
1084 | ||
1085 | for (i = 0; i < CP_RX_RING_SIZE; i++) { | |
1086 | struct sk_buff *skb; | |
3598b57b | 1087 | dma_addr_t mapping; |
1da177e4 | 1088 | |
89d71a66 | 1089 | skb = netdev_alloc_skb_ip_align(dev, cp->rx_buf_sz); |
1da177e4 LT |
1090 | if (!skb) |
1091 | goto err_out; | |
1092 | ||
6cc92cdd JG |
1093 | mapping = dma_map_single(&cp->pdev->dev, skb->data, |
1094 | cp->rx_buf_sz, PCI_DMA_FROMDEVICE); | |
1eec0e84 NH |
1095 | if (dma_mapping_error(&cp->pdev->dev, mapping)) { |
1096 | kfree_skb(skb); | |
1097 | goto err_out; | |
1098 | } | |
0ba894d4 | 1099 | cp->rx_skb[i] = skb; |
1da177e4 LT |
1100 | |
1101 | cp->rx_ring[i].opts2 = 0; | |
3598b57b | 1102 | cp->rx_ring[i].addr = cpu_to_le64(mapping); |
1da177e4 LT |
1103 | if (i == (CP_RX_RING_SIZE - 1)) |
1104 | cp->rx_ring[i].opts1 = | |
1105 | cpu_to_le32(DescOwn | RingEnd | cp->rx_buf_sz); | |
1106 | else | |
1107 | cp->rx_ring[i].opts1 = | |
1108 | cpu_to_le32(DescOwn | cp->rx_buf_sz); | |
1109 | } | |
1110 | ||
1111 | return 0; | |
1112 | ||
1113 | err_out: | |
1114 | cp_clean_rings(cp); | |
1115 | return -ENOMEM; | |
1116 | } | |
1117 | ||
576cfa93 FR |
1118 | static void cp_init_rings_index (struct cp_private *cp) |
1119 | { | |
1120 | cp->rx_tail = 0; | |
1121 | cp->tx_head = cp->tx_tail = 0; | |
1122 | } | |
1123 | ||
1da177e4 LT |
1124 | static int cp_init_rings (struct cp_private *cp) |
1125 | { | |
1126 | memset(cp->tx_ring, 0, sizeof(struct cp_desc) * CP_TX_RING_SIZE); | |
1127 | cp->tx_ring[CP_TX_RING_SIZE - 1].opts1 = cpu_to_le32(RingEnd); | |
1128 | ||
576cfa93 | 1129 | cp_init_rings_index(cp); |
1da177e4 LT |
1130 | |
1131 | return cp_refill_rx (cp); | |
1132 | } | |
1133 | ||
1134 | static int cp_alloc_rings (struct cp_private *cp) | |
1135 | { | |
892a925e | 1136 | struct device *d = &cp->pdev->dev; |
1da177e4 | 1137 | void *mem; |
892a925e | 1138 | int rc; |
1da177e4 | 1139 | |
892a925e | 1140 | mem = dma_alloc_coherent(d, CP_RING_BYTES, &cp->ring_dma, GFP_KERNEL); |
1da177e4 LT |
1141 | if (!mem) |
1142 | return -ENOMEM; | |
1143 | ||
1144 | cp->rx_ring = mem; | |
1145 | cp->tx_ring = &cp->rx_ring[CP_RX_RING_SIZE]; | |
1146 | ||
892a925e | 1147 | rc = cp_init_rings(cp); |
1148 | if (rc < 0) | |
1149 | dma_free_coherent(d, CP_RING_BYTES, cp->rx_ring, cp->ring_dma); | |
1150 | ||
1151 | return rc; | |
1da177e4 LT |
1152 | } |
1153 | ||
1154 | static void cp_clean_rings (struct cp_private *cp) | |
1155 | { | |
3598b57b | 1156 | struct cp_desc *desc; |
1da177e4 LT |
1157 | unsigned i; |
1158 | ||
1da177e4 | 1159 | for (i = 0; i < CP_RX_RING_SIZE; i++) { |
0ba894d4 | 1160 | if (cp->rx_skb[i]) { |
3598b57b | 1161 | desc = cp->rx_ring + i; |
6cc92cdd | 1162 | dma_unmap_single(&cp->pdev->dev,le64_to_cpu(desc->addr), |
1da177e4 | 1163 | cp->rx_buf_sz, PCI_DMA_FROMDEVICE); |
0ba894d4 | 1164 | dev_kfree_skb(cp->rx_skb[i]); |
1da177e4 LT |
1165 | } |
1166 | } | |
1167 | ||
1168 | for (i = 0; i < CP_TX_RING_SIZE; i++) { | |
48907e39 FR |
1169 | if (cp->tx_skb[i]) { |
1170 | struct sk_buff *skb = cp->tx_skb[i]; | |
5734418d | 1171 | |
3598b57b | 1172 | desc = cp->tx_ring + i; |
6cc92cdd | 1173 | dma_unmap_single(&cp->pdev->dev,le64_to_cpu(desc->addr), |
48907e39 FR |
1174 | le32_to_cpu(desc->opts1) & 0xffff, |
1175 | PCI_DMA_TODEVICE); | |
3598b57b | 1176 | if (le32_to_cpu(desc->opts1) & LastFrag) |
5734418d | 1177 | dev_kfree_skb(skb); |
237225f7 | 1178 | cp->dev->stats.tx_dropped++; |
1da177e4 LT |
1179 | } |
1180 | } | |
98962baa | 1181 | netdev_reset_queue(cp->dev); |
1da177e4 | 1182 | |
5734418d FR |
1183 | memset(cp->rx_ring, 0, sizeof(struct cp_desc) * CP_RX_RING_SIZE); |
1184 | memset(cp->tx_ring, 0, sizeof(struct cp_desc) * CP_TX_RING_SIZE); | |
1185 | ||
0ba894d4 | 1186 | memset(cp->rx_skb, 0, sizeof(struct sk_buff *) * CP_RX_RING_SIZE); |
48907e39 | 1187 | memset(cp->tx_skb, 0, sizeof(struct sk_buff *) * CP_TX_RING_SIZE); |
1da177e4 LT |
1188 | } |
1189 | ||
1190 | static void cp_free_rings (struct cp_private *cp) | |
1191 | { | |
1192 | cp_clean_rings(cp); | |
6cc92cdd JG |
1193 | dma_free_coherent(&cp->pdev->dev, CP_RING_BYTES, cp->rx_ring, |
1194 | cp->ring_dma); | |
1da177e4 LT |
1195 | cp->rx_ring = NULL; |
1196 | cp->tx_ring = NULL; | |
1da177e4 LT |
1197 | } |
1198 | ||
1199 | static int cp_open (struct net_device *dev) | |
1200 | { | |
1201 | struct cp_private *cp = netdev_priv(dev); | |
a69afe32 | 1202 | const int irq = cp->pdev->irq; |
1da177e4 LT |
1203 | int rc; |
1204 | ||
b4f18b3f | 1205 | netif_dbg(cp, ifup, dev, "enabling interface\n"); |
1da177e4 LT |
1206 | |
1207 | rc = cp_alloc_rings(cp); | |
1208 | if (rc) | |
1209 | return rc; | |
1210 | ||
bea3348e SH |
1211 | napi_enable(&cp->napi); |
1212 | ||
1da177e4 LT |
1213 | cp_init_hw(cp); |
1214 | ||
a69afe32 | 1215 | rc = request_irq(irq, cp_interrupt, IRQF_SHARED, dev->name, dev); |
1da177e4 LT |
1216 | if (rc) |
1217 | goto err_out_hw; | |
1218 | ||
a8c9cb10 JW |
1219 | cp_enable_irq(cp); |
1220 | ||
1da177e4 | 1221 | netif_carrier_off(dev); |
2501f843 | 1222 | mii_check_media(&cp->mii_if, netif_msg_link(cp), true); |
1da177e4 LT |
1223 | netif_start_queue(dev); |
1224 | ||
1225 | return 0; | |
1226 | ||
1227 | err_out_hw: | |
bea3348e | 1228 | napi_disable(&cp->napi); |
1da177e4 LT |
1229 | cp_stop_hw(cp); |
1230 | cp_free_rings(cp); | |
1231 | return rc; | |
1232 | } | |
1233 | ||
1234 | static int cp_close (struct net_device *dev) | |
1235 | { | |
1236 | struct cp_private *cp = netdev_priv(dev); | |
1237 | unsigned long flags; | |
1238 | ||
bea3348e SH |
1239 | napi_disable(&cp->napi); |
1240 | ||
b4f18b3f | 1241 | netif_dbg(cp, ifdown, dev, "disabling interface\n"); |
1da177e4 LT |
1242 | |
1243 | spin_lock_irqsave(&cp->lock, flags); | |
1244 | ||
1245 | netif_stop_queue(dev); | |
1246 | netif_carrier_off(dev); | |
1247 | ||
1248 | cp_stop_hw(cp); | |
1249 | ||
1250 | spin_unlock_irqrestore(&cp->lock, flags); | |
1251 | ||
a69afe32 | 1252 | free_irq(cp->pdev->irq, dev); |
1da177e4 LT |
1253 | |
1254 | cp_free_rings(cp); | |
1255 | return 0; | |
1256 | } | |
1257 | ||
9030c0d2 FR |
1258 | static void cp_tx_timeout(struct net_device *dev) |
1259 | { | |
1260 | struct cp_private *cp = netdev_priv(dev); | |
1261 | unsigned long flags; | |
1262 | int rc; | |
1263 | ||
b4f18b3f JP |
1264 | netdev_warn(dev, "Transmit timeout, status %2x %4x %4x %4x\n", |
1265 | cpr8(Cmd), cpr16(CpCmd), | |
1266 | cpr16(IntrStatus), cpr16(IntrMask)); | |
9030c0d2 FR |
1267 | |
1268 | spin_lock_irqsave(&cp->lock, flags); | |
1269 | ||
1270 | cp_stop_hw(cp); | |
1271 | cp_clean_rings(cp); | |
1272 | rc = cp_init_rings(cp); | |
1273 | cp_start_hw(cp); | |
01ffc0a7 | 1274 | cp_enable_irq(cp); |
9030c0d2 FR |
1275 | |
1276 | netif_wake_queue(dev); | |
1277 | ||
1278 | spin_unlock_irqrestore(&cp->lock, flags); | |
9030c0d2 FR |
1279 | } |
1280 | ||
1da177e4 LT |
1281 | static int cp_change_mtu(struct net_device *dev, int new_mtu) |
1282 | { | |
1283 | struct cp_private *cp = netdev_priv(dev); | |
1da177e4 LT |
1284 | |
1285 | /* check for invalid MTU, according to hardware limits */ | |
1286 | if (new_mtu < CP_MIN_MTU || new_mtu > CP_MAX_MTU) | |
1287 | return -EINVAL; | |
1288 | ||
1289 | /* if network interface not up, no need for complexity */ | |
1290 | if (!netif_running(dev)) { | |
1291 | dev->mtu = new_mtu; | |
1292 | cp_set_rxbufsize(cp); /* set new rx buf size */ | |
1293 | return 0; | |
1294 | } | |
1295 | ||
cb64edb6 JG |
1296 | /* network IS up, close it, reset MTU, and come up again. */ |
1297 | cp_close(dev); | |
1da177e4 | 1298 | dev->mtu = new_mtu; |
cb64edb6 JG |
1299 | cp_set_rxbufsize(cp); |
1300 | return cp_open(dev); | |
1da177e4 | 1301 | } |
1da177e4 | 1302 | |
f71e1309 | 1303 | static const char mii_2_8139_map[8] = { |
1da177e4 LT |
1304 | BasicModeCtrl, |
1305 | BasicModeStatus, | |
1306 | 0, | |
1307 | 0, | |
1308 | NWayAdvert, | |
1309 | NWayLPAR, | |
1310 | NWayExpansion, | |
1311 | 0 | |
1312 | }; | |
1313 | ||
1314 | static int mdio_read(struct net_device *dev, int phy_id, int location) | |
1315 | { | |
1316 | struct cp_private *cp = netdev_priv(dev); | |
1317 | ||
1318 | return location < 8 && mii_2_8139_map[location] ? | |
1319 | readw(cp->regs + mii_2_8139_map[location]) : 0; | |
1320 | } | |
1321 | ||
1322 | ||
1323 | static void mdio_write(struct net_device *dev, int phy_id, int location, | |
1324 | int value) | |
1325 | { | |
1326 | struct cp_private *cp = netdev_priv(dev); | |
1327 | ||
1328 | if (location == 0) { | |
1329 | cpw8(Cfg9346, Cfg9346_Unlock); | |
1330 | cpw16(BasicModeCtrl, value); | |
1331 | cpw8(Cfg9346, Cfg9346_Lock); | |
1332 | } else if (location < 8 && mii_2_8139_map[location]) | |
1333 | cpw16(mii_2_8139_map[location], value); | |
1334 | } | |
1335 | ||
1336 | /* Set the ethtool Wake-on-LAN settings */ | |
1337 | static int netdev_set_wol (struct cp_private *cp, | |
1338 | const struct ethtool_wolinfo *wol) | |
1339 | { | |
1340 | u8 options; | |
1341 | ||
1342 | options = cpr8 (Config3) & ~(LinkUp | MagicPacket); | |
1343 | /* If WOL is being disabled, no need for complexity */ | |
1344 | if (wol->wolopts) { | |
1345 | if (wol->wolopts & WAKE_PHY) options |= LinkUp; | |
1346 | if (wol->wolopts & WAKE_MAGIC) options |= MagicPacket; | |
1347 | } | |
1348 | ||
1349 | cpw8 (Cfg9346, Cfg9346_Unlock); | |
1350 | cpw8 (Config3, options); | |
1351 | cpw8 (Cfg9346, Cfg9346_Lock); | |
1352 | ||
1353 | options = 0; /* Paranoia setting */ | |
1354 | options = cpr8 (Config5) & ~(UWF | MWF | BWF); | |
1355 | /* If WOL is being disabled, no need for complexity */ | |
1356 | if (wol->wolopts) { | |
1357 | if (wol->wolopts & WAKE_UCAST) options |= UWF; | |
1358 | if (wol->wolopts & WAKE_BCAST) options |= BWF; | |
1359 | if (wol->wolopts & WAKE_MCAST) options |= MWF; | |
1360 | } | |
1361 | ||
1362 | cpw8 (Config5, options); | |
1363 | ||
1364 | cp->wol_enabled = (wol->wolopts) ? 1 : 0; | |
1365 | ||
1366 | return 0; | |
1367 | } | |
1368 | ||
1369 | /* Get the ethtool Wake-on-LAN settings */ | |
1370 | static void netdev_get_wol (struct cp_private *cp, | |
1371 | struct ethtool_wolinfo *wol) | |
1372 | { | |
1373 | u8 options; | |
1374 | ||
1375 | wol->wolopts = 0; /* Start from scratch */ | |
1376 | wol->supported = WAKE_PHY | WAKE_BCAST | WAKE_MAGIC | | |
1377 | WAKE_MCAST | WAKE_UCAST; | |
1378 | /* We don't need to go on if WOL is disabled */ | |
1379 | if (!cp->wol_enabled) return; | |
f3b197ac | 1380 | |
1da177e4 LT |
1381 | options = cpr8 (Config3); |
1382 | if (options & LinkUp) wol->wolopts |= WAKE_PHY; | |
1383 | if (options & MagicPacket) wol->wolopts |= WAKE_MAGIC; | |
1384 | ||
1385 | options = 0; /* Paranoia setting */ | |
1386 | options = cpr8 (Config5); | |
1387 | if (options & UWF) wol->wolopts |= WAKE_UCAST; | |
1388 | if (options & BWF) wol->wolopts |= WAKE_BCAST; | |
1389 | if (options & MWF) wol->wolopts |= WAKE_MCAST; | |
1390 | } | |
1391 | ||
1392 | static void cp_get_drvinfo (struct net_device *dev, struct ethtool_drvinfo *info) | |
1393 | { | |
1394 | struct cp_private *cp = netdev_priv(dev); | |
1395 | ||
68aad78c RJ |
1396 | strlcpy(info->driver, DRV_NAME, sizeof(info->driver)); |
1397 | strlcpy(info->version, DRV_VERSION, sizeof(info->version)); | |
1398 | strlcpy(info->bus_info, pci_name(cp->pdev), sizeof(info->bus_info)); | |
1da177e4 LT |
1399 | } |
1400 | ||
1d0861ac RJ |
1401 | static void cp_get_ringparam(struct net_device *dev, |
1402 | struct ethtool_ringparam *ring) | |
1403 | { | |
1404 | ring->rx_max_pending = CP_RX_RING_SIZE; | |
1405 | ring->tx_max_pending = CP_TX_RING_SIZE; | |
1406 | ring->rx_pending = CP_RX_RING_SIZE; | |
1407 | ring->tx_pending = CP_TX_RING_SIZE; | |
1408 | } | |
1409 | ||
1da177e4 LT |
1410 | static int cp_get_regs_len(struct net_device *dev) |
1411 | { | |
1412 | return CP_REGS_SIZE; | |
1413 | } | |
1414 | ||
b9f2c044 | 1415 | static int cp_get_sset_count (struct net_device *dev, int sset) |
1da177e4 | 1416 | { |
b9f2c044 JG |
1417 | switch (sset) { |
1418 | case ETH_SS_STATS: | |
1419 | return CP_NUM_STATS; | |
1420 | default: | |
1421 | return -EOPNOTSUPP; | |
1422 | } | |
1da177e4 LT |
1423 | } |
1424 | ||
1425 | static int cp_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) | |
1426 | { | |
1427 | struct cp_private *cp = netdev_priv(dev); | |
1428 | int rc; | |
1429 | unsigned long flags; | |
1430 | ||
1431 | spin_lock_irqsave(&cp->lock, flags); | |
1432 | rc = mii_ethtool_gset(&cp->mii_if, cmd); | |
1433 | spin_unlock_irqrestore(&cp->lock, flags); | |
1434 | ||
1435 | return rc; | |
1436 | } | |
1437 | ||
1438 | static int cp_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) | |
1439 | { | |
1440 | struct cp_private *cp = netdev_priv(dev); | |
1441 | int rc; | |
1442 | unsigned long flags; | |
1443 | ||
1444 | spin_lock_irqsave(&cp->lock, flags); | |
1445 | rc = mii_ethtool_sset(&cp->mii_if, cmd); | |
1446 | spin_unlock_irqrestore(&cp->lock, flags); | |
1447 | ||
1448 | return rc; | |
1449 | } | |
1450 | ||
1451 | static int cp_nway_reset(struct net_device *dev) | |
1452 | { | |
1453 | struct cp_private *cp = netdev_priv(dev); | |
1454 | return mii_nway_restart(&cp->mii_if); | |
1455 | } | |
1456 | ||
1457 | static u32 cp_get_msglevel(struct net_device *dev) | |
1458 | { | |
1459 | struct cp_private *cp = netdev_priv(dev); | |
1460 | return cp->msg_enable; | |
1461 | } | |
1462 | ||
1463 | static void cp_set_msglevel(struct net_device *dev, u32 value) | |
1464 | { | |
1465 | struct cp_private *cp = netdev_priv(dev); | |
1466 | cp->msg_enable = value; | |
1467 | } | |
1468 | ||
c8f44aff | 1469 | static int cp_set_features(struct net_device *dev, netdev_features_t features) |
1da177e4 LT |
1470 | { |
1471 | struct cp_private *cp = netdev_priv(dev); | |
044a890c | 1472 | unsigned long flags; |
1da177e4 | 1473 | |
044a890c MM |
1474 | if (!((dev->features ^ features) & NETIF_F_RXCSUM)) |
1475 | return 0; | |
1da177e4 | 1476 | |
044a890c | 1477 | spin_lock_irqsave(&cp->lock, flags); |
1da177e4 | 1478 | |
044a890c MM |
1479 | if (features & NETIF_F_RXCSUM) |
1480 | cp->cpcmd |= RxChkSum; | |
1da177e4 | 1481 | else |
044a890c | 1482 | cp->cpcmd &= ~RxChkSum; |
1da177e4 | 1483 | |
f646968f | 1484 | if (features & NETIF_F_HW_VLAN_CTAG_RX) |
6864ddb2 | 1485 | cp->cpcmd |= RxVlanOn; |
1486 | else | |
1487 | cp->cpcmd &= ~RxVlanOn; | |
1488 | ||
044a890c MM |
1489 | cpw16_f(CpCmd, cp->cpcmd); |
1490 | spin_unlock_irqrestore(&cp->lock, flags); | |
1da177e4 LT |
1491 | |
1492 | return 0; | |
1493 | } | |
1494 | ||
1495 | static void cp_get_regs(struct net_device *dev, struct ethtool_regs *regs, | |
1496 | void *p) | |
1497 | { | |
1498 | struct cp_private *cp = netdev_priv(dev); | |
1499 | unsigned long flags; | |
1500 | ||
1501 | if (regs->len < CP_REGS_SIZE) | |
1502 | return /* -EINVAL */; | |
1503 | ||
1504 | regs->version = CP_REGS_VER; | |
1505 | ||
1506 | spin_lock_irqsave(&cp->lock, flags); | |
1507 | memcpy_fromio(p, cp->regs, CP_REGS_SIZE); | |
1508 | spin_unlock_irqrestore(&cp->lock, flags); | |
1509 | } | |
1510 | ||
1511 | static void cp_get_wol (struct net_device *dev, struct ethtool_wolinfo *wol) | |
1512 | { | |
1513 | struct cp_private *cp = netdev_priv(dev); | |
1514 | unsigned long flags; | |
1515 | ||
1516 | spin_lock_irqsave (&cp->lock, flags); | |
1517 | netdev_get_wol (cp, wol); | |
1518 | spin_unlock_irqrestore (&cp->lock, flags); | |
1519 | } | |
1520 | ||
1521 | static int cp_set_wol (struct net_device *dev, struct ethtool_wolinfo *wol) | |
1522 | { | |
1523 | struct cp_private *cp = netdev_priv(dev); | |
1524 | unsigned long flags; | |
1525 | int rc; | |
1526 | ||
1527 | spin_lock_irqsave (&cp->lock, flags); | |
1528 | rc = netdev_set_wol (cp, wol); | |
1529 | spin_unlock_irqrestore (&cp->lock, flags); | |
1530 | ||
1531 | return rc; | |
1532 | } | |
1533 | ||
1534 | static void cp_get_strings (struct net_device *dev, u32 stringset, u8 *buf) | |
1535 | { | |
1536 | switch (stringset) { | |
1537 | case ETH_SS_STATS: | |
1538 | memcpy(buf, ðtool_stats_keys, sizeof(ethtool_stats_keys)); | |
1539 | break; | |
1540 | default: | |
1541 | BUG(); | |
1542 | break; | |
1543 | } | |
1544 | } | |
1545 | ||
1546 | static void cp_get_ethtool_stats (struct net_device *dev, | |
1547 | struct ethtool_stats *estats, u64 *tmp_stats) | |
1548 | { | |
1549 | struct cp_private *cp = netdev_priv(dev); | |
8b512927 SH |
1550 | struct cp_dma_stats *nic_stats; |
1551 | dma_addr_t dma; | |
1da177e4 LT |
1552 | int i; |
1553 | ||
6cc92cdd JG |
1554 | nic_stats = dma_alloc_coherent(&cp->pdev->dev, sizeof(*nic_stats), |
1555 | &dma, GFP_KERNEL); | |
8b512927 SH |
1556 | if (!nic_stats) |
1557 | return; | |
97f568d8 | 1558 | |
1da177e4 | 1559 | /* begin NIC statistics dump */ |
8b512927 | 1560 | cpw32(StatsAddr + 4, (u64)dma >> 32); |
284901a9 | 1561 | cpw32(StatsAddr, ((u64)dma & DMA_BIT_MASK(32)) | DumpStats); |
1da177e4 LT |
1562 | cpr32(StatsAddr); |
1563 | ||
97f568d8 | 1564 | for (i = 0; i < 1000; i++) { |
1da177e4 LT |
1565 | if ((cpr32(StatsAddr) & DumpStats) == 0) |
1566 | break; | |
97f568d8 | 1567 | udelay(10); |
1da177e4 | 1568 | } |
97f568d8 SH |
1569 | cpw32(StatsAddr, 0); |
1570 | cpw32(StatsAddr + 4, 0); | |
8b512927 | 1571 | cpr32(StatsAddr); |
1da177e4 LT |
1572 | |
1573 | i = 0; | |
8b512927 SH |
1574 | tmp_stats[i++] = le64_to_cpu(nic_stats->tx_ok); |
1575 | tmp_stats[i++] = le64_to_cpu(nic_stats->rx_ok); | |
1576 | tmp_stats[i++] = le64_to_cpu(nic_stats->tx_err); | |
1577 | tmp_stats[i++] = le32_to_cpu(nic_stats->rx_err); | |
1578 | tmp_stats[i++] = le16_to_cpu(nic_stats->rx_fifo); | |
1579 | tmp_stats[i++] = le16_to_cpu(nic_stats->frame_align); | |
1580 | tmp_stats[i++] = le32_to_cpu(nic_stats->tx_ok_1col); | |
1581 | tmp_stats[i++] = le32_to_cpu(nic_stats->tx_ok_mcol); | |
1582 | tmp_stats[i++] = le64_to_cpu(nic_stats->rx_ok_phys); | |
1583 | tmp_stats[i++] = le64_to_cpu(nic_stats->rx_ok_bcast); | |
1584 | tmp_stats[i++] = le32_to_cpu(nic_stats->rx_ok_mcast); | |
1585 | tmp_stats[i++] = le16_to_cpu(nic_stats->tx_abort); | |
1586 | tmp_stats[i++] = le16_to_cpu(nic_stats->tx_underrun); | |
1da177e4 | 1587 | tmp_stats[i++] = cp->cp_stats.rx_frags; |
5d9428de | 1588 | BUG_ON(i != CP_NUM_STATS); |
8b512927 | 1589 | |
6cc92cdd | 1590 | dma_free_coherent(&cp->pdev->dev, sizeof(*nic_stats), nic_stats, dma); |
1da177e4 LT |
1591 | } |
1592 | ||
7282d491 | 1593 | static const struct ethtool_ops cp_ethtool_ops = { |
1da177e4 LT |
1594 | .get_drvinfo = cp_get_drvinfo, |
1595 | .get_regs_len = cp_get_regs_len, | |
b9f2c044 | 1596 | .get_sset_count = cp_get_sset_count, |
1da177e4 LT |
1597 | .get_settings = cp_get_settings, |
1598 | .set_settings = cp_set_settings, | |
1599 | .nway_reset = cp_nway_reset, | |
1600 | .get_link = ethtool_op_get_link, | |
1601 | .get_msglevel = cp_get_msglevel, | |
1602 | .set_msglevel = cp_set_msglevel, | |
1da177e4 LT |
1603 | .get_regs = cp_get_regs, |
1604 | .get_wol = cp_get_wol, | |
1605 | .set_wol = cp_set_wol, | |
1606 | .get_strings = cp_get_strings, | |
1607 | .get_ethtool_stats = cp_get_ethtool_stats, | |
722fdb33 PC |
1608 | .get_eeprom_len = cp_get_eeprom_len, |
1609 | .get_eeprom = cp_get_eeprom, | |
1610 | .set_eeprom = cp_set_eeprom, | |
1d0861ac | 1611 | .get_ringparam = cp_get_ringparam, |
1da177e4 LT |
1612 | }; |
1613 | ||
1614 | static int cp_ioctl (struct net_device *dev, struct ifreq *rq, int cmd) | |
1615 | { | |
1616 | struct cp_private *cp = netdev_priv(dev); | |
1617 | int rc; | |
1618 | unsigned long flags; | |
1619 | ||
1620 | if (!netif_running(dev)) | |
1621 | return -EINVAL; | |
1622 | ||
1623 | spin_lock_irqsave(&cp->lock, flags); | |
1624 | rc = generic_mii_ioctl(&cp->mii_if, if_mii(rq), cmd, NULL); | |
1625 | spin_unlock_irqrestore(&cp->lock, flags); | |
1626 | return rc; | |
1627 | } | |
1628 | ||
c048aaf4 JP |
1629 | static int cp_set_mac_address(struct net_device *dev, void *p) |
1630 | { | |
1631 | struct cp_private *cp = netdev_priv(dev); | |
1632 | struct sockaddr *addr = p; | |
1633 | ||
1634 | if (!is_valid_ether_addr(addr->sa_data)) | |
1635 | return -EADDRNOTAVAIL; | |
1636 | ||
1637 | memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); | |
1638 | ||
1639 | spin_lock_irq(&cp->lock); | |
1640 | ||
1641 | cpw8_f(Cfg9346, Cfg9346_Unlock); | |
1642 | cpw32_f(MAC0 + 0, le32_to_cpu (*(__le32 *) (dev->dev_addr + 0))); | |
1643 | cpw32_f(MAC0 + 4, le32_to_cpu (*(__le32 *) (dev->dev_addr + 4))); | |
1644 | cpw8_f(Cfg9346, Cfg9346_Lock); | |
1645 | ||
1646 | spin_unlock_irq(&cp->lock); | |
1647 | ||
1648 | return 0; | |
1649 | } | |
1650 | ||
1da177e4 LT |
1651 | /* Serial EEPROM section. */ |
1652 | ||
1653 | /* EEPROM_Ctrl bits. */ | |
1654 | #define EE_SHIFT_CLK 0x04 /* EEPROM shift clock. */ | |
1655 | #define EE_CS 0x08 /* EEPROM chip select. */ | |
1656 | #define EE_DATA_WRITE 0x02 /* EEPROM chip data in. */ | |
1657 | #define EE_WRITE_0 0x00 | |
1658 | #define EE_WRITE_1 0x02 | |
1659 | #define EE_DATA_READ 0x01 /* EEPROM chip data out. */ | |
1660 | #define EE_ENB (0x80 | EE_CS) | |
1661 | ||
1662 | /* Delay between EEPROM clock transitions. | |
1663 | No extra delay is needed with 33Mhz PCI, but 66Mhz may change this. | |
1664 | */ | |
1665 | ||
7d03f5a4 | 1666 | #define eeprom_delay() readb(ee_addr) |
1da177e4 LT |
1667 | |
1668 | /* The EEPROM commands include the alway-set leading bit. */ | |
722fdb33 | 1669 | #define EE_EXTEND_CMD (4) |
1da177e4 LT |
1670 | #define EE_WRITE_CMD (5) |
1671 | #define EE_READ_CMD (6) | |
1672 | #define EE_ERASE_CMD (7) | |
1673 | ||
722fdb33 PC |
1674 | #define EE_EWDS_ADDR (0) |
1675 | #define EE_WRAL_ADDR (1) | |
1676 | #define EE_ERAL_ADDR (2) | |
1677 | #define EE_EWEN_ADDR (3) | |
1678 | ||
1679 | #define CP_EEPROM_MAGIC PCI_DEVICE_ID_REALTEK_8139 | |
1da177e4 | 1680 | |
722fdb33 PC |
1681 | static void eeprom_cmd_start(void __iomem *ee_addr) |
1682 | { | |
1da177e4 LT |
1683 | writeb (EE_ENB & ~EE_CS, ee_addr); |
1684 | writeb (EE_ENB, ee_addr); | |
1685 | eeprom_delay (); | |
722fdb33 | 1686 | } |
1da177e4 | 1687 | |
722fdb33 PC |
1688 | static void eeprom_cmd(void __iomem *ee_addr, int cmd, int cmd_len) |
1689 | { | |
1690 | int i; | |
1691 | ||
1692 | /* Shift the command bits out. */ | |
1693 | for (i = cmd_len - 1; i >= 0; i--) { | |
1694 | int dataval = (cmd & (1 << i)) ? EE_DATA_WRITE : 0; | |
1da177e4 LT |
1695 | writeb (EE_ENB | dataval, ee_addr); |
1696 | eeprom_delay (); | |
1697 | writeb (EE_ENB | dataval | EE_SHIFT_CLK, ee_addr); | |
1698 | eeprom_delay (); | |
1699 | } | |
1700 | writeb (EE_ENB, ee_addr); | |
1701 | eeprom_delay (); | |
722fdb33 PC |
1702 | } |
1703 | ||
1704 | static void eeprom_cmd_end(void __iomem *ee_addr) | |
1705 | { | |
0bc777bc | 1706 | writeb(0, ee_addr); |
722fdb33 PC |
1707 | eeprom_delay (); |
1708 | } | |
1709 | ||
1710 | static void eeprom_extend_cmd(void __iomem *ee_addr, int extend_cmd, | |
1711 | int addr_len) | |
1712 | { | |
1713 | int cmd = (EE_EXTEND_CMD << addr_len) | (extend_cmd << (addr_len - 2)); | |
1714 | ||
1715 | eeprom_cmd_start(ee_addr); | |
1716 | eeprom_cmd(ee_addr, cmd, 3 + addr_len); | |
1717 | eeprom_cmd_end(ee_addr); | |
1718 | } | |
1719 | ||
1720 | static u16 read_eeprom (void __iomem *ioaddr, int location, int addr_len) | |
1721 | { | |
1722 | int i; | |
1723 | u16 retval = 0; | |
1724 | void __iomem *ee_addr = ioaddr + Cfg9346; | |
1725 | int read_cmd = location | (EE_READ_CMD << addr_len); | |
1726 | ||
1727 | eeprom_cmd_start(ee_addr); | |
1728 | eeprom_cmd(ee_addr, read_cmd, 3 + addr_len); | |
1da177e4 LT |
1729 | |
1730 | for (i = 16; i > 0; i--) { | |
1731 | writeb (EE_ENB | EE_SHIFT_CLK, ee_addr); | |
1732 | eeprom_delay (); | |
1733 | retval = | |
1734 | (retval << 1) | ((readb (ee_addr) & EE_DATA_READ) ? 1 : | |
1735 | 0); | |
1736 | writeb (EE_ENB, ee_addr); | |
1737 | eeprom_delay (); | |
1738 | } | |
1739 | ||
722fdb33 | 1740 | eeprom_cmd_end(ee_addr); |
1da177e4 LT |
1741 | |
1742 | return retval; | |
1743 | } | |
1744 | ||
722fdb33 PC |
1745 | static void write_eeprom(void __iomem *ioaddr, int location, u16 val, |
1746 | int addr_len) | |
1747 | { | |
1748 | int i; | |
1749 | void __iomem *ee_addr = ioaddr + Cfg9346; | |
1750 | int write_cmd = location | (EE_WRITE_CMD << addr_len); | |
1751 | ||
1752 | eeprom_extend_cmd(ee_addr, EE_EWEN_ADDR, addr_len); | |
1753 | ||
1754 | eeprom_cmd_start(ee_addr); | |
1755 | eeprom_cmd(ee_addr, write_cmd, 3 + addr_len); | |
1756 | eeprom_cmd(ee_addr, val, 16); | |
1757 | eeprom_cmd_end(ee_addr); | |
1758 | ||
1759 | eeprom_cmd_start(ee_addr); | |
1760 | for (i = 0; i < 20000; i++) | |
1761 | if (readb(ee_addr) & EE_DATA_READ) | |
1762 | break; | |
1763 | eeprom_cmd_end(ee_addr); | |
1764 | ||
1765 | eeprom_extend_cmd(ee_addr, EE_EWDS_ADDR, addr_len); | |
1766 | } | |
1767 | ||
1768 | static int cp_get_eeprom_len(struct net_device *dev) | |
1769 | { | |
1770 | struct cp_private *cp = netdev_priv(dev); | |
1771 | int size; | |
1772 | ||
1773 | spin_lock_irq(&cp->lock); | |
1774 | size = read_eeprom(cp->regs, 0, 8) == 0x8129 ? 256 : 128; | |
1775 | spin_unlock_irq(&cp->lock); | |
1776 | ||
1777 | return size; | |
1778 | } | |
1779 | ||
1780 | static int cp_get_eeprom(struct net_device *dev, | |
1781 | struct ethtool_eeprom *eeprom, u8 *data) | |
1782 | { | |
1783 | struct cp_private *cp = netdev_priv(dev); | |
1784 | unsigned int addr_len; | |
1785 | u16 val; | |
1786 | u32 offset = eeprom->offset >> 1; | |
1787 | u32 len = eeprom->len; | |
1788 | u32 i = 0; | |
1789 | ||
1790 | eeprom->magic = CP_EEPROM_MAGIC; | |
1791 | ||
1792 | spin_lock_irq(&cp->lock); | |
1793 | ||
1794 | addr_len = read_eeprom(cp->regs, 0, 8) == 0x8129 ? 8 : 6; | |
1795 | ||
1796 | if (eeprom->offset & 1) { | |
1797 | val = read_eeprom(cp->regs, offset, addr_len); | |
1798 | data[i++] = (u8)(val >> 8); | |
1799 | offset++; | |
1800 | } | |
1801 | ||
1802 | while (i < len - 1) { | |
1803 | val = read_eeprom(cp->regs, offset, addr_len); | |
1804 | data[i++] = (u8)val; | |
1805 | data[i++] = (u8)(val >> 8); | |
1806 | offset++; | |
1807 | } | |
1808 | ||
1809 | if (i < len) { | |
1810 | val = read_eeprom(cp->regs, offset, addr_len); | |
1811 | data[i] = (u8)val; | |
1812 | } | |
1813 | ||
1814 | spin_unlock_irq(&cp->lock); | |
1815 | return 0; | |
1816 | } | |
1817 | ||
1818 | static int cp_set_eeprom(struct net_device *dev, | |
1819 | struct ethtool_eeprom *eeprom, u8 *data) | |
1820 | { | |
1821 | struct cp_private *cp = netdev_priv(dev); | |
1822 | unsigned int addr_len; | |
1823 | u16 val; | |
1824 | u32 offset = eeprom->offset >> 1; | |
1825 | u32 len = eeprom->len; | |
1826 | u32 i = 0; | |
1827 | ||
1828 | if (eeprom->magic != CP_EEPROM_MAGIC) | |
1829 | return -EINVAL; | |
1830 | ||
1831 | spin_lock_irq(&cp->lock); | |
1832 | ||
1833 | addr_len = read_eeprom(cp->regs, 0, 8) == 0x8129 ? 8 : 6; | |
1834 | ||
1835 | if (eeprom->offset & 1) { | |
1836 | val = read_eeprom(cp->regs, offset, addr_len) & 0xff; | |
1837 | val |= (u16)data[i++] << 8; | |
1838 | write_eeprom(cp->regs, offset, val, addr_len); | |
1839 | offset++; | |
1840 | } | |
1841 | ||
1842 | while (i < len - 1) { | |
1843 | val = (u16)data[i++]; | |
1844 | val |= (u16)data[i++] << 8; | |
1845 | write_eeprom(cp->regs, offset, val, addr_len); | |
1846 | offset++; | |
1847 | } | |
1848 | ||
1849 | if (i < len) { | |
1850 | val = read_eeprom(cp->regs, offset, addr_len) & 0xff00; | |
1851 | val |= (u16)data[i]; | |
1852 | write_eeprom(cp->regs, offset, val, addr_len); | |
1853 | } | |
1854 | ||
1855 | spin_unlock_irq(&cp->lock); | |
1856 | return 0; | |
1857 | } | |
1858 | ||
1da177e4 LT |
1859 | /* Put the board into D3cold state and wait for WakeUp signal */ |
1860 | static void cp_set_d3_state (struct cp_private *cp) | |
1861 | { | |
1862 | pci_enable_wake (cp->pdev, 0, 1); /* Enable PME# generation */ | |
1863 | pci_set_power_state (cp->pdev, PCI_D3hot); | |
1864 | } | |
1865 | ||
48dfcde4 SH |
1866 | static const struct net_device_ops cp_netdev_ops = { |
1867 | .ndo_open = cp_open, | |
1868 | .ndo_stop = cp_close, | |
1869 | .ndo_validate_addr = eth_validate_addr, | |
c048aaf4 | 1870 | .ndo_set_mac_address = cp_set_mac_address, |
afc4b13d | 1871 | .ndo_set_rx_mode = cp_set_rx_mode, |
48dfcde4 SH |
1872 | .ndo_get_stats = cp_get_stats, |
1873 | .ndo_do_ioctl = cp_ioctl, | |
00829823 | 1874 | .ndo_start_xmit = cp_start_xmit, |
48dfcde4 | 1875 | .ndo_tx_timeout = cp_tx_timeout, |
044a890c | 1876 | .ndo_set_features = cp_set_features, |
48dfcde4 | 1877 | .ndo_change_mtu = cp_change_mtu, |
fe96aaa1 | 1878 | |
48dfcde4 SH |
1879 | #ifdef CONFIG_NET_POLL_CONTROLLER |
1880 | .ndo_poll_controller = cp_poll_controller, | |
1881 | #endif | |
1882 | }; | |
1883 | ||
1da177e4 LT |
1884 | static int cp_init_one (struct pci_dev *pdev, const struct pci_device_id *ent) |
1885 | { | |
1886 | struct net_device *dev; | |
1887 | struct cp_private *cp; | |
1888 | int rc; | |
1889 | void __iomem *regs; | |
2427ddd8 | 1890 | resource_size_t pciaddr; |
1da177e4 | 1891 | unsigned int addr_len, i, pci_using_dac; |
1da177e4 LT |
1892 | |
1893 | #ifndef MODULE | |
1894 | static int version_printed; | |
1895 | if (version_printed++ == 0) | |
b93d5847 | 1896 | pr_info("%s", version); |
1da177e4 LT |
1897 | #endif |
1898 | ||
1da177e4 | 1899 | if (pdev->vendor == PCI_VENDOR_ID_REALTEK && |
44c10138 | 1900 | pdev->device == PCI_DEVICE_ID_REALTEK_8139 && pdev->revision < 0x20) { |
de4549ca | 1901 | dev_info(&pdev->dev, |
b4f18b3f JP |
1902 | "This (id %04x:%04x rev %02x) is not an 8139C+ compatible chip, use 8139too\n", |
1903 | pdev->vendor, pdev->device, pdev->revision); | |
1da177e4 LT |
1904 | return -ENODEV; |
1905 | } | |
1906 | ||
1907 | dev = alloc_etherdev(sizeof(struct cp_private)); | |
1908 | if (!dev) | |
1909 | return -ENOMEM; | |
1da177e4 LT |
1910 | SET_NETDEV_DEV(dev, &pdev->dev); |
1911 | ||
1912 | cp = netdev_priv(dev); | |
1913 | cp->pdev = pdev; | |
1914 | cp->dev = dev; | |
1915 | cp->msg_enable = (debug < 0 ? CP_DEF_MSG_ENABLE : debug); | |
1916 | spin_lock_init (&cp->lock); | |
1917 | cp->mii_if.dev = dev; | |
1918 | cp->mii_if.mdio_read = mdio_read; | |
1919 | cp->mii_if.mdio_write = mdio_write; | |
1920 | cp->mii_if.phy_id = CP_INTERNAL_PHY; | |
1921 | cp->mii_if.phy_id_mask = 0x1f; | |
1922 | cp->mii_if.reg_num_mask = 0x1f; | |
1923 | cp_set_rxbufsize(cp); | |
1924 | ||
1925 | rc = pci_enable_device(pdev); | |
1926 | if (rc) | |
1927 | goto err_out_free; | |
1928 | ||
1929 | rc = pci_set_mwi(pdev); | |
1930 | if (rc) | |
1931 | goto err_out_disable; | |
1932 | ||
1933 | rc = pci_request_regions(pdev, DRV_NAME); | |
1934 | if (rc) | |
1935 | goto err_out_mwi; | |
1936 | ||
1937 | pciaddr = pci_resource_start(pdev, 1); | |
1938 | if (!pciaddr) { | |
1939 | rc = -EIO; | |
9b91cf9d | 1940 | dev_err(&pdev->dev, "no MMIO resource\n"); |
1da177e4 LT |
1941 | goto err_out_res; |
1942 | } | |
1943 | if (pci_resource_len(pdev, 1) < CP_REGS_SIZE) { | |
1944 | rc = -EIO; | |
9b91cf9d | 1945 | dev_err(&pdev->dev, "MMIO resource (%llx) too small\n", |
2e8a538d | 1946 | (unsigned long long)pci_resource_len(pdev, 1)); |
1da177e4 LT |
1947 | goto err_out_res; |
1948 | } | |
1949 | ||
1950 | /* Configure DMA attributes. */ | |
1951 | if ((sizeof(dma_addr_t) > 4) && | |
6a35528a YH |
1952 | !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)) && |
1953 | !pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) { | |
1da177e4 LT |
1954 | pci_using_dac = 1; |
1955 | } else { | |
1956 | pci_using_dac = 0; | |
1957 | ||
284901a9 | 1958 | rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); |
1da177e4 | 1959 | if (rc) { |
9b91cf9d | 1960 | dev_err(&pdev->dev, |
b4f18b3f | 1961 | "No usable DMA configuration, aborting\n"); |
1da177e4 LT |
1962 | goto err_out_res; |
1963 | } | |
284901a9 | 1964 | rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); |
1da177e4 | 1965 | if (rc) { |
9b91cf9d | 1966 | dev_err(&pdev->dev, |
b4f18b3f | 1967 | "No usable consistent DMA configuration, aborting\n"); |
1da177e4 LT |
1968 | goto err_out_res; |
1969 | } | |
1970 | } | |
1971 | ||
1972 | cp->cpcmd = (pci_using_dac ? PCIDAC : 0) | | |
1973 | PCIMulRW | RxChkSum | CpRxOn | CpTxOn; | |
1974 | ||
044a890c MM |
1975 | dev->features |= NETIF_F_RXCSUM; |
1976 | dev->hw_features |= NETIF_F_RXCSUM; | |
1977 | ||
1da177e4 LT |
1978 | regs = ioremap(pciaddr, CP_REGS_SIZE); |
1979 | if (!regs) { | |
1980 | rc = -EIO; | |
4626dd46 | 1981 | dev_err(&pdev->dev, "Cannot map PCI MMIO (%Lx@%Lx)\n", |
b4f18b3f | 1982 | (unsigned long long)pci_resource_len(pdev, 1), |
2e8a538d | 1983 | (unsigned long long)pciaddr); |
1da177e4 LT |
1984 | goto err_out_res; |
1985 | } | |
1da177e4 LT |
1986 | cp->regs = regs; |
1987 | ||
1988 | cp_stop_hw(cp); | |
1989 | ||
1990 | /* read MAC address from EEPROM */ | |
1991 | addr_len = read_eeprom (regs, 0, 8) == 0x8129 ? 8 : 6; | |
1992 | for (i = 0; i < 3; i++) | |
03233b90 AV |
1993 | ((__le16 *) (dev->dev_addr))[i] = |
1994 | cpu_to_le16(read_eeprom (regs, i + 7, addr_len)); | |
1da177e4 | 1995 | |
48dfcde4 | 1996 | dev->netdev_ops = &cp_netdev_ops; |
bea3348e | 1997 | netif_napi_add(dev, &cp->napi, cp_rx_poll, 16); |
1da177e4 | 1998 | dev->ethtool_ops = &cp_ethtool_ops; |
1da177e4 | 1999 | dev->watchdog_timeo = TX_TIMEOUT; |
1da177e4 | 2000 | |
f646968f | 2001 | dev->features |= NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX; |
1da177e4 LT |
2002 | |
2003 | if (pci_using_dac) | |
2004 | dev->features |= NETIF_F_HIGHDMA; | |
2005 | ||
044a890c | 2006 | /* disabled by default until verified */ |
6864ddb2 | 2007 | dev->hw_features |= NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO | |
f646968f | 2008 | NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX; |
6864ddb2 | 2009 | dev->vlan_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO | |
2010 | NETIF_F_HIGHDMA; | |
fcec3456 | 2011 | |
1da177e4 LT |
2012 | rc = register_netdev(dev); |
2013 | if (rc) | |
2014 | goto err_out_iomap; | |
2015 | ||
a69afe32 FR |
2016 | netdev_info(dev, "RTL-8139C+ at 0x%p, %pM, IRQ %d\n", |
2017 | regs, dev->dev_addr, pdev->irq); | |
1da177e4 LT |
2018 | |
2019 | pci_set_drvdata(pdev, dev); | |
2020 | ||
2021 | /* enable busmastering and memory-write-invalidate */ | |
2022 | pci_set_master(pdev); | |
2023 | ||
2e8a538d JG |
2024 | if (cp->wol_enabled) |
2025 | cp_set_d3_state (cp); | |
1da177e4 LT |
2026 | |
2027 | return 0; | |
2028 | ||
2029 | err_out_iomap: | |
2030 | iounmap(regs); | |
2031 | err_out_res: | |
2032 | pci_release_regions(pdev); | |
2033 | err_out_mwi: | |
2034 | pci_clear_mwi(pdev); | |
2035 | err_out_disable: | |
2036 | pci_disable_device(pdev); | |
2037 | err_out_free: | |
2038 | free_netdev(dev); | |
2039 | return rc; | |
2040 | } | |
2041 | ||
2042 | static void cp_remove_one (struct pci_dev *pdev) | |
2043 | { | |
2044 | struct net_device *dev = pci_get_drvdata(pdev); | |
2045 | struct cp_private *cp = netdev_priv(dev); | |
2046 | ||
1da177e4 LT |
2047 | unregister_netdev(dev); |
2048 | iounmap(cp->regs); | |
2e8a538d JG |
2049 | if (cp->wol_enabled) |
2050 | pci_set_power_state (pdev, PCI_D0); | |
1da177e4 LT |
2051 | pci_release_regions(pdev); |
2052 | pci_clear_mwi(pdev); | |
2053 | pci_disable_device(pdev); | |
2054 | pci_set_drvdata(pdev, NULL); | |
2055 | free_netdev(dev); | |
2056 | } | |
2057 | ||
2058 | #ifdef CONFIG_PM | |
05adc3b7 | 2059 | static int cp_suspend (struct pci_dev *pdev, pm_message_t state) |
1da177e4 | 2060 | { |
7668a494 FR |
2061 | struct net_device *dev = pci_get_drvdata(pdev); |
2062 | struct cp_private *cp = netdev_priv(dev); | |
1da177e4 LT |
2063 | unsigned long flags; |
2064 | ||
7668a494 FR |
2065 | if (!netif_running(dev)) |
2066 | return 0; | |
1da177e4 LT |
2067 | |
2068 | netif_device_detach (dev); | |
2069 | netif_stop_queue (dev); | |
2070 | ||
2071 | spin_lock_irqsave (&cp->lock, flags); | |
2072 | ||
2073 | /* Disable Rx and Tx */ | |
2074 | cpw16 (IntrMask, 0); | |
2075 | cpw8 (Cmd, cpr8 (Cmd) & (~RxOn | ~TxOn)); | |
2076 | ||
2077 | spin_unlock_irqrestore (&cp->lock, flags); | |
2078 | ||
576cfa93 FR |
2079 | pci_save_state(pdev); |
2080 | pci_enable_wake(pdev, pci_choose_state(pdev, state), cp->wol_enabled); | |
2081 | pci_set_power_state(pdev, pci_choose_state(pdev, state)); | |
1da177e4 LT |
2082 | |
2083 | return 0; | |
2084 | } | |
2085 | ||
2086 | static int cp_resume (struct pci_dev *pdev) | |
2087 | { | |
576cfa93 FR |
2088 | struct net_device *dev = pci_get_drvdata (pdev); |
2089 | struct cp_private *cp = netdev_priv(dev); | |
a4cf0761 | 2090 | unsigned long flags; |
1da177e4 | 2091 | |
576cfa93 FR |
2092 | if (!netif_running(dev)) |
2093 | return 0; | |
1da177e4 LT |
2094 | |
2095 | netif_device_attach (dev); | |
576cfa93 FR |
2096 | |
2097 | pci_set_power_state(pdev, PCI_D0); | |
2098 | pci_restore_state(pdev); | |
2099 | pci_enable_wake(pdev, PCI_D0, 0); | |
2100 | ||
2101 | /* FIXME: sh*t may happen if the Rx ring buffer is depleted */ | |
2102 | cp_init_rings_index (cp); | |
1da177e4 | 2103 | cp_init_hw (cp); |
a8c9cb10 | 2104 | cp_enable_irq(cp); |
1da177e4 | 2105 | netif_start_queue (dev); |
a4cf0761 PO |
2106 | |
2107 | spin_lock_irqsave (&cp->lock, flags); | |
2108 | ||
2501f843 | 2109 | mii_check_media(&cp->mii_if, netif_msg_link(cp), false); |
a4cf0761 PO |
2110 | |
2111 | spin_unlock_irqrestore (&cp->lock, flags); | |
f3b197ac | 2112 | |
1da177e4 LT |
2113 | return 0; |
2114 | } | |
2115 | #endif /* CONFIG_PM */ | |
2116 | ||
2117 | static struct pci_driver cp_driver = { | |
2118 | .name = DRV_NAME, | |
2119 | .id_table = cp_pci_tbl, | |
2120 | .probe = cp_init_one, | |
2121 | .remove = cp_remove_one, | |
2122 | #ifdef CONFIG_PM | |
2123 | .resume = cp_resume, | |
2124 | .suspend = cp_suspend, | |
2125 | #endif | |
2126 | }; | |
2127 | ||
2128 | static int __init cp_init (void) | |
2129 | { | |
2130 | #ifdef MODULE | |
b93d5847 | 2131 | pr_info("%s", version); |
1da177e4 | 2132 | #endif |
29917620 | 2133 | return pci_register_driver(&cp_driver); |
1da177e4 LT |
2134 | } |
2135 | ||
2136 | static void __exit cp_exit (void) | |
2137 | { | |
2138 | pci_unregister_driver (&cp_driver); | |
2139 | } | |
2140 | ||
2141 | module_init(cp_init); | |
2142 | module_exit(cp_exit); |