root / hw / net / xilinx_axienet.c @ eedfac6f
History | View | Annotate | Download (27.9 kB)
1 |
/*
|
---|---|
2 |
* QEMU model of Xilinx AXI-Ethernet.
|
3 |
*
|
4 |
* Copyright (c) 2011 Edgar E. Iglesias.
|
5 |
*
|
6 |
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
7 |
* of this software and associated documentation files (the "Software"), to deal
|
8 |
* in the Software without restriction, including without limitation the rights
|
9 |
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
10 |
* copies of the Software, and to permit persons to whom the Software is
|
11 |
* furnished to do so, subject to the following conditions:
|
12 |
*
|
13 |
* The above copyright notice and this permission notice shall be included in
|
14 |
* all copies or substantial portions of the Software.
|
15 |
*
|
16 |
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
17 |
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
18 |
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
19 |
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
20 |
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
21 |
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
22 |
* THE SOFTWARE.
|
23 |
*/
|
24 |
|
25 |
#include "hw/sysbus.h" |
26 |
#include "qemu/log.h" |
27 |
#include "net/net.h" |
28 |
#include "net/checksum.h" |
29 |
#include "qapi/qmp/qerror.h" |
30 |
|
31 |
#include "hw/stream.h" |
32 |
|
33 |
#define DPHY(x)
|
34 |
|
35 |
#define TYPE_XILINX_AXI_ENET "xlnx.axi-ethernet" |
36 |
#define TYPE_XILINX_AXI_ENET_DATA_STREAM "xilinx-axienet-data-stream" |
37 |
#define TYPE_XILINX_AXI_ENET_CONTROL_STREAM "xilinx-axienet-control-stream" |
38 |
|
39 |
#define XILINX_AXI_ENET(obj) \
|
40 |
OBJECT_CHECK(XilinxAXIEnet, (obj), TYPE_XILINX_AXI_ENET) |
41 |
|
42 |
#define XILINX_AXI_ENET_DATA_STREAM(obj) \
|
43 |
OBJECT_CHECK(XilinxAXIEnetStreamSlave, (obj),\ |
44 |
TYPE_XILINX_AXI_ENET_DATA_STREAM) |
45 |
|
46 |
#define XILINX_AXI_ENET_CONTROL_STREAM(obj) \
|
47 |
OBJECT_CHECK(XilinxAXIEnetStreamSlave, (obj),\ |
48 |
TYPE_XILINX_AXI_ENET_CONTROL_STREAM) |
49 |
|
50 |
/* Advertisement control register. */
|
51 |
#define ADVERTISE_10HALF 0x0020 /* Try for 10mbps half-duplex */ |
52 |
#define ADVERTISE_10FULL 0x0040 /* Try for 10mbps full-duplex */ |
53 |
#define ADVERTISE_100HALF 0x0080 /* Try for 100mbps half-duplex */ |
54 |
#define ADVERTISE_100FULL 0x0100 /* Try for 100mbps full-duplex */ |
55 |
|
56 |
#define CONTROL_PAYLOAD_WORDS 5 |
57 |
#define CONTROL_PAYLOAD_SIZE (CONTROL_PAYLOAD_WORDS * (sizeof(uint32_t))) |
58 |
|
59 |
struct PHY {
|
60 |
uint32_t regs[32];
|
61 |
|
62 |
int link;
|
63 |
|
64 |
unsigned int (*read)(struct PHY *phy, unsigned int req); |
65 |
void (*write)(struct PHY *phy, unsigned int req, |
66 |
unsigned int data); |
67 |
}; |
68 |
|
69 |
static unsigned int tdk_read(struct PHY *phy, unsigned int req) |
70 |
{ |
71 |
int regnum;
|
72 |
unsigned r = 0; |
73 |
|
74 |
regnum = req & 0x1f;
|
75 |
|
76 |
switch (regnum) {
|
77 |
case 1: |
78 |
if (!phy->link) {
|
79 |
break;
|
80 |
} |
81 |
/* MR1. */
|
82 |
/* Speeds and modes. */
|
83 |
r |= (1 << 13) | (1 << 14); |
84 |
r |= (1 << 11) | (1 << 12); |
85 |
r |= (1 << 5); /* Autoneg complete. */ |
86 |
r |= (1 << 3); /* Autoneg able. */ |
87 |
r |= (1 << 2); /* link. */ |
88 |
r |= (1 << 1); /* link. */ |
89 |
break;
|
90 |
case 5: |
91 |
/* Link partner ability.
|
92 |
We are kind; always agree with whatever best mode
|
93 |
the guest advertises. */
|
94 |
r = 1 << 14; /* Success. */ |
95 |
/* Copy advertised modes. */
|
96 |
r |= phy->regs[4] & (15 << 5); |
97 |
/* Autoneg support. */
|
98 |
r |= 1;
|
99 |
break;
|
100 |
case 17: |
101 |
/* Marvel PHY on many xilinx boards. */
|
102 |
r = 0x8000; /* 1000Mb */ |
103 |
break;
|
104 |
case 18: |
105 |
{ |
106 |
/* Diagnostics reg. */
|
107 |
int duplex = 0; |
108 |
int speed_100 = 0; |
109 |
|
110 |
if (!phy->link) {
|
111 |
break;
|
112 |
} |
113 |
|
114 |
/* Are we advertising 100 half or 100 duplex ? */
|
115 |
speed_100 = !!(phy->regs[4] & ADVERTISE_100HALF);
|
116 |
speed_100 |= !!(phy->regs[4] & ADVERTISE_100FULL);
|
117 |
|
118 |
/* Are we advertising 10 duplex or 100 duplex ? */
|
119 |
duplex = !!(phy->regs[4] & ADVERTISE_100FULL);
|
120 |
duplex |= !!(phy->regs[4] & ADVERTISE_10FULL);
|
121 |
r = (speed_100 << 10) | (duplex << 11); |
122 |
} |
123 |
break;
|
124 |
|
125 |
default:
|
126 |
r = phy->regs[regnum]; |
127 |
break;
|
128 |
} |
129 |
DPHY(qemu_log("\n%s %x = reg[%d]\n", __func__, r, regnum));
|
130 |
return r;
|
131 |
} |
132 |
|
133 |
static void |
134 |
tdk_write(struct PHY *phy, unsigned int req, unsigned int data) |
135 |
{ |
136 |
int regnum;
|
137 |
|
138 |
regnum = req & 0x1f;
|
139 |
DPHY(qemu_log("%s reg[%d] = %x\n", __func__, regnum, data));
|
140 |
switch (regnum) {
|
141 |
default:
|
142 |
phy->regs[regnum] = data; |
143 |
break;
|
144 |
} |
145 |
} |
146 |
|
147 |
static void |
148 |
tdk_init(struct PHY *phy)
|
149 |
{ |
150 |
phy->regs[0] = 0x3100; |
151 |
/* PHY Id. */
|
152 |
phy->regs[2] = 0x0300; |
153 |
phy->regs[3] = 0xe400; |
154 |
/* Autonegotiation advertisement reg. */
|
155 |
phy->regs[4] = 0x01E1; |
156 |
phy->link = 1;
|
157 |
|
158 |
phy->read = tdk_read; |
159 |
phy->write = tdk_write; |
160 |
} |
161 |
|
162 |
struct MDIOBus {
|
163 |
/* bus. */
|
164 |
int mdc;
|
165 |
int mdio;
|
166 |
|
167 |
/* decoder. */
|
168 |
enum {
|
169 |
PREAMBLE, |
170 |
SOF, |
171 |
OPC, |
172 |
ADDR, |
173 |
REQ, |
174 |
TURNAROUND, |
175 |
DATA |
176 |
} state; |
177 |
unsigned int drive; |
178 |
|
179 |
unsigned int cnt; |
180 |
unsigned int addr; |
181 |
unsigned int opc; |
182 |
unsigned int req; |
183 |
unsigned int data; |
184 |
|
185 |
struct PHY *devs[32]; |
186 |
}; |
187 |
|
188 |
static void |
189 |
mdio_attach(struct MDIOBus *bus, struct PHY *phy, unsigned int addr) |
190 |
{ |
191 |
bus->devs[addr & 0x1f] = phy;
|
192 |
} |
193 |
|
194 |
#ifdef USE_THIS_DEAD_CODE
|
195 |
static void |
196 |
mdio_detach(struct MDIOBus *bus, struct PHY *phy, unsigned int addr) |
197 |
{ |
198 |
bus->devs[addr & 0x1f] = NULL; |
199 |
} |
200 |
#endif
|
201 |
|
202 |
static uint16_t mdio_read_req(struct MDIOBus *bus, unsigned int addr, |
203 |
unsigned int reg) |
204 |
{ |
205 |
struct PHY *phy;
|
206 |
uint16_t data; |
207 |
|
208 |
phy = bus->devs[addr]; |
209 |
if (phy && phy->read) {
|
210 |
data = phy->read(phy, reg); |
211 |
} else {
|
212 |
data = 0xffff;
|
213 |
} |
214 |
DPHY(qemu_log("%s addr=%d reg=%d data=%x\n", __func__, addr, reg, data));
|
215 |
return data;
|
216 |
} |
217 |
|
218 |
static void mdio_write_req(struct MDIOBus *bus, unsigned int addr, |
219 |
unsigned int reg, uint16_t data) |
220 |
{ |
221 |
struct PHY *phy;
|
222 |
|
223 |
DPHY(qemu_log("%s addr=%d reg=%d data=%x\n", __func__, addr, reg, data));
|
224 |
phy = bus->devs[addr]; |
225 |
if (phy && phy->write) {
|
226 |
phy->write(phy, reg, data); |
227 |
} |
228 |
} |
229 |
|
230 |
#define DENET(x)
|
231 |
|
232 |
#define R_RAF (0x000 / 4) |
233 |
enum {
|
234 |
RAF_MCAST_REJ = (1 << 1), |
235 |
RAF_BCAST_REJ = (1 << 2), |
236 |
RAF_EMCF_EN = (1 << 12), |
237 |
RAF_NEWFUNC_EN = (1 << 11) |
238 |
}; |
239 |
|
240 |
#define R_IS (0x00C / 4) |
241 |
enum {
|
242 |
IS_HARD_ACCESS_COMPLETE = 1,
|
243 |
IS_AUTONEG = (1 << 1), |
244 |
IS_RX_COMPLETE = (1 << 2), |
245 |
IS_RX_REJECT = (1 << 3), |
246 |
IS_TX_COMPLETE = (1 << 5), |
247 |
IS_RX_DCM_LOCK = (1 << 6), |
248 |
IS_MGM_RDY = (1 << 7), |
249 |
IS_PHY_RST_DONE = (1 << 8), |
250 |
}; |
251 |
|
252 |
#define R_IP (0x010 / 4) |
253 |
#define R_IE (0x014 / 4) |
254 |
#define R_UAWL (0x020 / 4) |
255 |
#define R_UAWU (0x024 / 4) |
256 |
#define R_PPST (0x030 / 4) |
257 |
enum {
|
258 |
PPST_LINKSTATUS = (1 << 0), |
259 |
PPST_PHY_LINKSTATUS = (1 << 7), |
260 |
}; |
261 |
|
262 |
#define R_STATS_RX_BYTESL (0x200 / 4) |
263 |
#define R_STATS_RX_BYTESH (0x204 / 4) |
264 |
#define R_STATS_TX_BYTESL (0x208 / 4) |
265 |
#define R_STATS_TX_BYTESH (0x20C / 4) |
266 |
#define R_STATS_RXL (0x290 / 4) |
267 |
#define R_STATS_RXH (0x294 / 4) |
268 |
#define R_STATS_RX_BCASTL (0x2a0 / 4) |
269 |
#define R_STATS_RX_BCASTH (0x2a4 / 4) |
270 |
#define R_STATS_RX_MCASTL (0x2a8 / 4) |
271 |
#define R_STATS_RX_MCASTH (0x2ac / 4) |
272 |
|
273 |
#define R_RCW0 (0x400 / 4) |
274 |
#define R_RCW1 (0x404 / 4) |
275 |
enum {
|
276 |
RCW1_VLAN = (1 << 27), |
277 |
RCW1_RX = (1 << 28), |
278 |
RCW1_FCS = (1 << 29), |
279 |
RCW1_JUM = (1 << 30), |
280 |
RCW1_RST = (1 << 31), |
281 |
}; |
282 |
|
283 |
#define R_TC (0x408 / 4) |
284 |
enum {
|
285 |
TC_VLAN = (1 << 27), |
286 |
TC_TX = (1 << 28), |
287 |
TC_FCS = (1 << 29), |
288 |
TC_JUM = (1 << 30), |
289 |
TC_RST = (1 << 31), |
290 |
}; |
291 |
|
292 |
#define R_EMMC (0x410 / 4) |
293 |
enum {
|
294 |
EMMC_LINKSPEED_10MB = (0 << 30), |
295 |
EMMC_LINKSPEED_100MB = (1 << 30), |
296 |
EMMC_LINKSPEED_1000MB = (2 << 30), |
297 |
}; |
298 |
|
299 |
#define R_PHYC (0x414 / 4) |
300 |
|
301 |
#define R_MC (0x500 / 4) |
302 |
#define MC_EN (1 << 6) |
303 |
|
304 |
#define R_MCR (0x504 / 4) |
305 |
#define R_MWD (0x508 / 4) |
306 |
#define R_MRD (0x50c / 4) |
307 |
#define R_MIS (0x600 / 4) |
308 |
#define R_MIP (0x620 / 4) |
309 |
#define R_MIE (0x640 / 4) |
310 |
#define R_MIC (0x640 / 4) |
311 |
|
312 |
#define R_UAW0 (0x700 / 4) |
313 |
#define R_UAW1 (0x704 / 4) |
314 |
#define R_FMI (0x708 / 4) |
315 |
#define R_AF0 (0x710 / 4) |
316 |
#define R_AF1 (0x714 / 4) |
317 |
#define R_MAX (0x34 / 4) |
318 |
|
319 |
/* Indirect registers. */
|
320 |
struct TEMAC {
|
321 |
struct MDIOBus mdio_bus;
|
322 |
struct PHY phy;
|
323 |
|
324 |
void *parent;
|
325 |
}; |
326 |
|
327 |
typedef struct XilinxAXIEnetStreamSlave XilinxAXIEnetStreamSlave; |
328 |
typedef struct XilinxAXIEnet XilinxAXIEnet; |
329 |
|
330 |
struct XilinxAXIEnetStreamSlave {
|
331 |
Object parent; |
332 |
|
333 |
struct XilinxAXIEnet *enet;
|
334 |
} ; |
335 |
|
336 |
struct XilinxAXIEnet {
|
337 |
SysBusDevice busdev; |
338 |
MemoryRegion iomem; |
339 |
qemu_irq irq; |
340 |
StreamSlave *tx_data_dev; |
341 |
StreamSlave *tx_control_dev; |
342 |
XilinxAXIEnetStreamSlave rx_data_dev; |
343 |
XilinxAXIEnetStreamSlave rx_control_dev; |
344 |
NICState *nic; |
345 |
NICConf conf; |
346 |
|
347 |
|
348 |
uint32_t c_rxmem; |
349 |
uint32_t c_txmem; |
350 |
uint32_t c_phyaddr; |
351 |
|
352 |
struct TEMAC TEMAC;
|
353 |
|
354 |
/* MII regs. */
|
355 |
union {
|
356 |
uint32_t regs[4];
|
357 |
struct {
|
358 |
uint32_t mc; |
359 |
uint32_t mcr; |
360 |
uint32_t mwd; |
361 |
uint32_t mrd; |
362 |
}; |
363 |
} mii; |
364 |
|
365 |
struct {
|
366 |
uint64_t rx_bytes; |
367 |
uint64_t tx_bytes; |
368 |
|
369 |
uint64_t rx; |
370 |
uint64_t rx_bcast; |
371 |
uint64_t rx_mcast; |
372 |
} stats; |
373 |
|
374 |
/* Receive configuration words. */
|
375 |
uint32_t rcw[2];
|
376 |
/* Transmit config. */
|
377 |
uint32_t tc; |
378 |
uint32_t emmc; |
379 |
uint32_t phyc; |
380 |
|
381 |
/* Unicast Address Word. */
|
382 |
uint32_t uaw[2];
|
383 |
/* Unicast address filter used with extended mcast. */
|
384 |
uint32_t ext_uaw[2];
|
385 |
uint32_t fmi; |
386 |
|
387 |
uint32_t regs[R_MAX]; |
388 |
|
389 |
/* Multicast filter addrs. */
|
390 |
uint32_t maddr[4][2]; |
391 |
/* 32K x 1 lookup filter. */
|
392 |
uint32_t ext_mtable[1024];
|
393 |
|
394 |
uint32_t hdr[CONTROL_PAYLOAD_WORDS]; |
395 |
|
396 |
uint8_t *rxmem; |
397 |
uint32_t rxsize; |
398 |
uint32_t rxpos; |
399 |
|
400 |
uint8_t rxapp[CONTROL_PAYLOAD_SIZE]; |
401 |
uint32_t rxappsize; |
402 |
}; |
403 |
|
404 |
static void axienet_rx_reset(XilinxAXIEnet *s) |
405 |
{ |
406 |
s->rcw[1] = RCW1_JUM | RCW1_FCS | RCW1_RX | RCW1_VLAN;
|
407 |
} |
408 |
|
409 |
static void axienet_tx_reset(XilinxAXIEnet *s) |
410 |
{ |
411 |
s->tc = TC_JUM | TC_TX | TC_VLAN; |
412 |
} |
413 |
|
414 |
static inline int axienet_rx_resetting(XilinxAXIEnet *s) |
415 |
{ |
416 |
return s->rcw[1] & RCW1_RST; |
417 |
} |
418 |
|
419 |
static inline int axienet_rx_enabled(XilinxAXIEnet *s) |
420 |
{ |
421 |
return s->rcw[1] & RCW1_RX; |
422 |
} |
423 |
|
424 |
static inline int axienet_extmcf_enabled(XilinxAXIEnet *s) |
425 |
{ |
426 |
return !!(s->regs[R_RAF] & RAF_EMCF_EN);
|
427 |
} |
428 |
|
429 |
static inline int axienet_newfunc_enabled(XilinxAXIEnet *s) |
430 |
{ |
431 |
return !!(s->regs[R_RAF] & RAF_NEWFUNC_EN);
|
432 |
} |
433 |
|
434 |
static void xilinx_axienet_reset(DeviceState *d) |
435 |
{ |
436 |
XilinxAXIEnet *s = XILINX_AXI_ENET(d); |
437 |
|
438 |
axienet_rx_reset(s); |
439 |
axienet_tx_reset(s); |
440 |
|
441 |
s->regs[R_PPST] = PPST_LINKSTATUS | PPST_PHY_LINKSTATUS; |
442 |
s->regs[R_IS] = IS_AUTONEG | IS_RX_DCM_LOCK | IS_MGM_RDY | IS_PHY_RST_DONE; |
443 |
|
444 |
s->emmc = EMMC_LINKSPEED_100MB; |
445 |
} |
446 |
|
447 |
static void enet_update_irq(XilinxAXIEnet *s) |
448 |
{ |
449 |
s->regs[R_IP] = s->regs[R_IS] & s->regs[R_IE]; |
450 |
qemu_set_irq(s->irq, !!s->regs[R_IP]); |
451 |
} |
452 |
|
453 |
static uint64_t enet_read(void *opaque, hwaddr addr, unsigned size) |
454 |
{ |
455 |
XilinxAXIEnet *s = opaque; |
456 |
uint32_t r = 0;
|
457 |
addr >>= 2;
|
458 |
|
459 |
switch (addr) {
|
460 |
case R_RCW0:
|
461 |
case R_RCW1:
|
462 |
r = s->rcw[addr & 1];
|
463 |
break;
|
464 |
|
465 |
case R_TC:
|
466 |
r = s->tc; |
467 |
break;
|
468 |
|
469 |
case R_EMMC:
|
470 |
r = s->emmc; |
471 |
break;
|
472 |
|
473 |
case R_PHYC:
|
474 |
r = s->phyc; |
475 |
break;
|
476 |
|
477 |
case R_MCR:
|
478 |
r = s->mii.regs[addr & 3] | (1 << 7); /* Always ready. */ |
479 |
break;
|
480 |
|
481 |
case R_STATS_RX_BYTESL:
|
482 |
case R_STATS_RX_BYTESH:
|
483 |
r = s->stats.rx_bytes >> (32 * (addr & 1)); |
484 |
break;
|
485 |
|
486 |
case R_STATS_TX_BYTESL:
|
487 |
case R_STATS_TX_BYTESH:
|
488 |
r = s->stats.tx_bytes >> (32 * (addr & 1)); |
489 |
break;
|
490 |
|
491 |
case R_STATS_RXL:
|
492 |
case R_STATS_RXH:
|
493 |
r = s->stats.rx >> (32 * (addr & 1)); |
494 |
break;
|
495 |
case R_STATS_RX_BCASTL:
|
496 |
case R_STATS_RX_BCASTH:
|
497 |
r = s->stats.rx_bcast >> (32 * (addr & 1)); |
498 |
break;
|
499 |
case R_STATS_RX_MCASTL:
|
500 |
case R_STATS_RX_MCASTH:
|
501 |
r = s->stats.rx_mcast >> (32 * (addr & 1)); |
502 |
break;
|
503 |
|
504 |
case R_MC:
|
505 |
case R_MWD:
|
506 |
case R_MRD:
|
507 |
r = s->mii.regs[addr & 3];
|
508 |
break;
|
509 |
|
510 |
case R_UAW0:
|
511 |
case R_UAW1:
|
512 |
r = s->uaw[addr & 1];
|
513 |
break;
|
514 |
|
515 |
case R_UAWU:
|
516 |
case R_UAWL:
|
517 |
r = s->ext_uaw[addr & 1];
|
518 |
break;
|
519 |
|
520 |
case R_FMI:
|
521 |
r = s->fmi; |
522 |
break;
|
523 |
|
524 |
case R_AF0:
|
525 |
case R_AF1:
|
526 |
r = s->maddr[s->fmi & 3][addr & 1]; |
527 |
break;
|
528 |
|
529 |
case 0x8000 ... 0x83ff: |
530 |
r = s->ext_mtable[addr - 0x8000];
|
531 |
break;
|
532 |
|
533 |
default:
|
534 |
if (addr < ARRAY_SIZE(s->regs)) {
|
535 |
r = s->regs[addr]; |
536 |
} |
537 |
DENET(qemu_log("%s addr=" TARGET_FMT_plx " v=%x\n", |
538 |
__func__, addr * 4, r));
|
539 |
break;
|
540 |
} |
541 |
return r;
|
542 |
} |
543 |
|
544 |
static void enet_write(void *opaque, hwaddr addr, |
545 |
uint64_t value, unsigned size)
|
546 |
{ |
547 |
XilinxAXIEnet *s = opaque; |
548 |
struct TEMAC *t = &s->TEMAC;
|
549 |
|
550 |
addr >>= 2;
|
551 |
switch (addr) {
|
552 |
case R_RCW0:
|
553 |
case R_RCW1:
|
554 |
s->rcw[addr & 1] = value;
|
555 |
if ((addr & 1) && value & RCW1_RST) { |
556 |
axienet_rx_reset(s); |
557 |
} else {
|
558 |
qemu_flush_queued_packets(qemu_get_queue(s->nic)); |
559 |
} |
560 |
break;
|
561 |
|
562 |
case R_TC:
|
563 |
s->tc = value; |
564 |
if (value & TC_RST) {
|
565 |
axienet_tx_reset(s); |
566 |
} |
567 |
break;
|
568 |
|
569 |
case R_EMMC:
|
570 |
s->emmc = value; |
571 |
break;
|
572 |
|
573 |
case R_PHYC:
|
574 |
s->phyc = value; |
575 |
break;
|
576 |
|
577 |
case R_MC:
|
578 |
value &= ((1 << 7) - 1); |
579 |
|
580 |
/* Enable the MII. */
|
581 |
if (value & MC_EN) {
|
582 |
unsigned int miiclkdiv = value & ((1 << 6) - 1); |
583 |
if (!miiclkdiv) {
|
584 |
qemu_log("AXIENET: MDIO enabled but MDIOCLK is zero!\n");
|
585 |
} |
586 |
} |
587 |
s->mii.mc = value; |
588 |
break;
|
589 |
|
590 |
case R_MCR: {
|
591 |
unsigned int phyaddr = (value >> 24) & 0x1f; |
592 |
unsigned int regaddr = (value >> 16) & 0x1f; |
593 |
unsigned int op = (value >> 14) & 3; |
594 |
unsigned int initiate = (value >> 11) & 1; |
595 |
|
596 |
if (initiate) {
|
597 |
if (op == 1) { |
598 |
mdio_write_req(&t->mdio_bus, phyaddr, regaddr, s->mii.mwd); |
599 |
} else if (op == 2) { |
600 |
s->mii.mrd = mdio_read_req(&t->mdio_bus, phyaddr, regaddr); |
601 |
} else {
|
602 |
qemu_log("AXIENET: invalid MDIOBus OP=%d\n", op);
|
603 |
} |
604 |
} |
605 |
s->mii.mcr = value; |
606 |
break;
|
607 |
} |
608 |
|
609 |
case R_MWD:
|
610 |
case R_MRD:
|
611 |
s->mii.regs[addr & 3] = value;
|
612 |
break;
|
613 |
|
614 |
|
615 |
case R_UAW0:
|
616 |
case R_UAW1:
|
617 |
s->uaw[addr & 1] = value;
|
618 |
break;
|
619 |
|
620 |
case R_UAWL:
|
621 |
case R_UAWU:
|
622 |
s->ext_uaw[addr & 1] = value;
|
623 |
break;
|
624 |
|
625 |
case R_FMI:
|
626 |
s->fmi = value; |
627 |
break;
|
628 |
|
629 |
case R_AF0:
|
630 |
case R_AF1:
|
631 |
s->maddr[s->fmi & 3][addr & 1] = value; |
632 |
break;
|
633 |
|
634 |
case R_IS:
|
635 |
s->regs[addr] &= ~value; |
636 |
break;
|
637 |
|
638 |
case 0x8000 ... 0x83ff: |
639 |
s->ext_mtable[addr - 0x8000] = value;
|
640 |
break;
|
641 |
|
642 |
default:
|
643 |
DENET(qemu_log("%s addr=" TARGET_FMT_plx " v=%x\n", |
644 |
__func__, addr * 4, (unsigned)value)); |
645 |
if (addr < ARRAY_SIZE(s->regs)) {
|
646 |
s->regs[addr] = value; |
647 |
} |
648 |
break;
|
649 |
} |
650 |
enet_update_irq(s); |
651 |
} |
652 |
|
653 |
static const MemoryRegionOps enet_ops = { |
654 |
.read = enet_read, |
655 |
.write = enet_write, |
656 |
.endianness = DEVICE_LITTLE_ENDIAN, |
657 |
}; |
658 |
|
659 |
static int eth_can_rx(NetClientState *nc) |
660 |
{ |
661 |
XilinxAXIEnet *s = qemu_get_nic_opaque(nc); |
662 |
|
663 |
/* RX enabled? */
|
664 |
return !s->rxsize && !axienet_rx_resetting(s) && axienet_rx_enabled(s);
|
665 |
} |
666 |
|
667 |
static int enet_match_addr(const uint8_t *buf, uint32_t f0, uint32_t f1) |
668 |
{ |
669 |
int match = 1; |
670 |
|
671 |
if (memcmp(buf, &f0, 4)) { |
672 |
match = 0;
|
673 |
} |
674 |
|
675 |
if (buf[4] != (f1 & 0xff) || buf[5] != ((f1 >> 8) & 0xff)) { |
676 |
match = 0;
|
677 |
} |
678 |
|
679 |
return match;
|
680 |
} |
681 |
|
682 |
static void axienet_eth_rx_notify(void *opaque) |
683 |
{ |
684 |
XilinxAXIEnet *s = XILINX_AXI_ENET(opaque); |
685 |
|
686 |
while (s->rxappsize && stream_can_push(s->tx_control_dev,
|
687 |
axienet_eth_rx_notify, s)) { |
688 |
size_t ret = stream_push(s->tx_control_dev, |
689 |
(void *)s->rxapp + CONTROL_PAYLOAD_SIZE
|
690 |
- s->rxappsize, s->rxappsize); |
691 |
s->rxappsize -= ret; |
692 |
} |
693 |
|
694 |
while (s->rxsize && stream_can_push(s->tx_data_dev,
|
695 |
axienet_eth_rx_notify, s)) { |
696 |
size_t ret = stream_push(s->tx_data_dev, (void *)s->rxmem + s->rxpos,
|
697 |
s->rxsize); |
698 |
s->rxsize -= ret; |
699 |
s->rxpos += ret; |
700 |
if (!s->rxsize) {
|
701 |
s->regs[R_IS] |= IS_RX_COMPLETE; |
702 |
} |
703 |
} |
704 |
enet_update_irq(s); |
705 |
} |
706 |
|
707 |
static ssize_t eth_rx(NetClientState *nc, const uint8_t *buf, size_t size) |
708 |
{ |
709 |
XilinxAXIEnet *s = qemu_get_nic_opaque(nc); |
710 |
static const unsigned char sa_bcast[6] = {0xff, 0xff, 0xff, |
711 |
0xff, 0xff, 0xff}; |
712 |
static const unsigned char sa_ipmcast[3] = {0x01, 0x00, 0x52}; |
713 |
uint32_t app[CONTROL_PAYLOAD_WORDS] = {0};
|
714 |
int promisc = s->fmi & (1 << 31); |
715 |
int unicast, broadcast, multicast, ip_multicast = 0; |
716 |
uint32_t csum32; |
717 |
uint16_t csum16; |
718 |
int i;
|
719 |
|
720 |
DENET(qemu_log("%s: %zd bytes\n", __func__, size));
|
721 |
|
722 |
unicast = ~buf[0] & 0x1; |
723 |
broadcast = memcmp(buf, sa_bcast, 6) == 0; |
724 |
multicast = !unicast && !broadcast; |
725 |
if (multicast && (memcmp(sa_ipmcast, buf, sizeof sa_ipmcast) == 0)) { |
726 |
ip_multicast = 1;
|
727 |
} |
728 |
|
729 |
/* Jumbo or vlan sizes ? */
|
730 |
if (!(s->rcw[1] & RCW1_JUM)) { |
731 |
if (size > 1518 && size <= 1522 && !(s->rcw[1] & RCW1_VLAN)) { |
732 |
return size;
|
733 |
} |
734 |
} |
735 |
|
736 |
/* Basic Address filters. If you want to use the extended filters
|
737 |
you'll generally have to place the ethernet mac into promiscuous mode
|
738 |
to avoid the basic filtering from dropping most frames. */
|
739 |
if (!promisc) {
|
740 |
if (unicast) {
|
741 |
if (!enet_match_addr(buf, s->uaw[0], s->uaw[1])) { |
742 |
return size;
|
743 |
} |
744 |
} else {
|
745 |
if (broadcast) {
|
746 |
/* Broadcast. */
|
747 |
if (s->regs[R_RAF] & RAF_BCAST_REJ) {
|
748 |
return size;
|
749 |
} |
750 |
} else {
|
751 |
int drop = 1; |
752 |
|
753 |
/* Multicast. */
|
754 |
if (s->regs[R_RAF] & RAF_MCAST_REJ) {
|
755 |
return size;
|
756 |
} |
757 |
|
758 |
for (i = 0; i < 4; i++) { |
759 |
if (enet_match_addr(buf, s->maddr[i][0], s->maddr[i][1])) { |
760 |
drop = 0;
|
761 |
break;
|
762 |
} |
763 |
} |
764 |
|
765 |
if (drop) {
|
766 |
return size;
|
767 |
} |
768 |
} |
769 |
} |
770 |
} |
771 |
|
772 |
/* Extended mcast filtering enabled? */
|
773 |
if (axienet_newfunc_enabled(s) && axienet_extmcf_enabled(s)) {
|
774 |
if (unicast) {
|
775 |
if (!enet_match_addr(buf, s->ext_uaw[0], s->ext_uaw[1])) { |
776 |
return size;
|
777 |
} |
778 |
} else {
|
779 |
if (broadcast) {
|
780 |
/* Broadcast. ??? */
|
781 |
if (s->regs[R_RAF] & RAF_BCAST_REJ) {
|
782 |
return size;
|
783 |
} |
784 |
} else {
|
785 |
int idx, bit;
|
786 |
|
787 |
/* Multicast. */
|
788 |
if (!memcmp(buf, sa_ipmcast, 3)) { |
789 |
return size;
|
790 |
} |
791 |
|
792 |
idx = (buf[4] & 0x7f) << 8; |
793 |
idx |= buf[5];
|
794 |
|
795 |
bit = 1 << (idx & 0x1f); |
796 |
idx >>= 5;
|
797 |
|
798 |
if (!(s->ext_mtable[idx] & bit)) {
|
799 |
return size;
|
800 |
} |
801 |
} |
802 |
} |
803 |
} |
804 |
|
805 |
if (size < 12) { |
806 |
s->regs[R_IS] |= IS_RX_REJECT; |
807 |
enet_update_irq(s); |
808 |
return -1; |
809 |
} |
810 |
|
811 |
if (size > (s->c_rxmem - 4)) { |
812 |
size = s->c_rxmem - 4;
|
813 |
} |
814 |
|
815 |
memcpy(s->rxmem, buf, size); |
816 |
memset(s->rxmem + size, 0, 4); /* Clear the FCS. */ |
817 |
|
818 |
if (s->rcw[1] & RCW1_FCS) { |
819 |
size += 4; /* fcs is inband. */ |
820 |
} |
821 |
|
822 |
app[0] = 5 << 28; |
823 |
csum32 = net_checksum_add(size - 14, (uint8_t *)s->rxmem + 14); |
824 |
/* Fold it once. */
|
825 |
csum32 = (csum32 & 0xffff) + (csum32 >> 16); |
826 |
/* And twice to get rid of possible carries. */
|
827 |
csum16 = (csum32 & 0xffff) + (csum32 >> 16); |
828 |
app[3] = csum16;
|
829 |
app[4] = size & 0xffff; |
830 |
|
831 |
s->stats.rx_bytes += size; |
832 |
s->stats.rx++; |
833 |
if (multicast) {
|
834 |
s->stats.rx_mcast++; |
835 |
app[2] |= 1 | (ip_multicast << 1); |
836 |
} else if (broadcast) { |
837 |
s->stats.rx_bcast++; |
838 |
app[2] |= 1 << 3; |
839 |
} |
840 |
|
841 |
/* Good frame. */
|
842 |
app[2] |= 1 << 6; |
843 |
|
844 |
s->rxsize = size; |
845 |
s->rxpos = 0;
|
846 |
for (i = 0; i < ARRAY_SIZE(app); ++i) { |
847 |
app[i] = cpu_to_le32(app[i]); |
848 |
} |
849 |
s->rxappsize = CONTROL_PAYLOAD_SIZE; |
850 |
memcpy(s->rxapp, app, s->rxappsize); |
851 |
axienet_eth_rx_notify(s); |
852 |
|
853 |
enet_update_irq(s); |
854 |
return size;
|
855 |
} |
856 |
|
857 |
static void eth_cleanup(NetClientState *nc) |
858 |
{ |
859 |
/* FIXME. */
|
860 |
XilinxAXIEnet *s = qemu_get_nic_opaque(nc); |
861 |
g_free(s->rxmem); |
862 |
g_free(s); |
863 |
} |
864 |
|
865 |
static size_t
|
866 |
xilinx_axienet_control_stream_push(StreamSlave *obj, uint8_t *buf, size_t len) |
867 |
{ |
868 |
int i;
|
869 |
XilinxAXIEnetStreamSlave *cs = XILINX_AXI_ENET_CONTROL_STREAM(obj); |
870 |
XilinxAXIEnet *s = cs->enet; |
871 |
|
872 |
if (len != CONTROL_PAYLOAD_SIZE) {
|
873 |
hw_error("AXI Enet requires %d byte control stream payload\n",
|
874 |
(int)CONTROL_PAYLOAD_SIZE);
|
875 |
} |
876 |
|
877 |
memcpy(s->hdr, buf, len); |
878 |
|
879 |
for (i = 0; i < ARRAY_SIZE(s->hdr); ++i) { |
880 |
s->hdr[i] = le32_to_cpu(s->hdr[i]); |
881 |
} |
882 |
return len;
|
883 |
} |
884 |
|
885 |
static size_t
|
886 |
xilinx_axienet_data_stream_push(StreamSlave *obj, uint8_t *buf, size_t size) |
887 |
{ |
888 |
XilinxAXIEnetStreamSlave *ds = XILINX_AXI_ENET_DATA_STREAM(obj); |
889 |
XilinxAXIEnet *s = ds->enet; |
890 |
|
891 |
/* TX enable ? */
|
892 |
if (!(s->tc & TC_TX)) {
|
893 |
return size;
|
894 |
} |
895 |
|
896 |
/* Jumbo or vlan sizes ? */
|
897 |
if (!(s->tc & TC_JUM)) {
|
898 |
if (size > 1518 && size <= 1522 && !(s->tc & TC_VLAN)) { |
899 |
return size;
|
900 |
} |
901 |
} |
902 |
|
903 |
if (s->hdr[0] & 1) { |
904 |
unsigned int start_off = s->hdr[1] >> 16; |
905 |
unsigned int write_off = s->hdr[1] & 0xffff; |
906 |
uint32_t tmp_csum; |
907 |
uint16_t csum; |
908 |
|
909 |
tmp_csum = net_checksum_add(size - start_off, |
910 |
(uint8_t *)buf + start_off); |
911 |
/* Accumulate the seed. */
|
912 |
tmp_csum += s->hdr[2] & 0xffff; |
913 |
|
914 |
/* Fold the 32bit partial checksum. */
|
915 |
csum = net_checksum_finish(tmp_csum); |
916 |
|
917 |
/* Writeback. */
|
918 |
buf[write_off] = csum >> 8;
|
919 |
buf[write_off + 1] = csum & 0xff; |
920 |
} |
921 |
|
922 |
qemu_send_packet(qemu_get_queue(s->nic), buf, size); |
923 |
|
924 |
s->stats.tx_bytes += size; |
925 |
s->regs[R_IS] |= IS_TX_COMPLETE; |
926 |
enet_update_irq(s); |
927 |
|
928 |
return size;
|
929 |
} |
930 |
|
931 |
static NetClientInfo net_xilinx_enet_info = {
|
932 |
.type = NET_CLIENT_OPTIONS_KIND_NIC, |
933 |
.size = sizeof(NICState),
|
934 |
.can_receive = eth_can_rx, |
935 |
.receive = eth_rx, |
936 |
.cleanup = eth_cleanup, |
937 |
}; |
938 |
|
939 |
static void xilinx_enet_realize(DeviceState *dev, Error **errp) |
940 |
{ |
941 |
XilinxAXIEnet *s = XILINX_AXI_ENET(dev); |
942 |
XilinxAXIEnetStreamSlave *ds = XILINX_AXI_ENET_DATA_STREAM(&s->rx_data_dev); |
943 |
XilinxAXIEnetStreamSlave *cs = XILINX_AXI_ENET_CONTROL_STREAM( |
944 |
&s->rx_control_dev); |
945 |
Error *local_errp = NULL;
|
946 |
|
947 |
object_property_add_link(OBJECT(ds), "enet", "xlnx.axi-ethernet", |
948 |
(Object **) &ds->enet, &local_errp); |
949 |
object_property_add_link(OBJECT(cs), "enet", "xlnx.axi-ethernet", |
950 |
(Object **) &cs->enet, &local_errp); |
951 |
if (local_errp) {
|
952 |
goto xilinx_enet_realize_fail;
|
953 |
} |
954 |
object_property_set_link(OBJECT(ds), OBJECT(s), "enet", &local_errp);
|
955 |
object_property_set_link(OBJECT(cs), OBJECT(s), "enet", &local_errp);
|
956 |
if (local_errp) {
|
957 |
goto xilinx_enet_realize_fail;
|
958 |
} |
959 |
|
960 |
qemu_macaddr_default_if_unset(&s->conf.macaddr); |
961 |
s->nic = qemu_new_nic(&net_xilinx_enet_info, &s->conf, |
962 |
object_get_typename(OBJECT(dev)), dev->id, s); |
963 |
qemu_format_nic_info_str(qemu_get_queue(s->nic), s->conf.macaddr.a); |
964 |
|
965 |
tdk_init(&s->TEMAC.phy); |
966 |
mdio_attach(&s->TEMAC.mdio_bus, &s->TEMAC.phy, s->c_phyaddr); |
967 |
|
968 |
s->TEMAC.parent = s; |
969 |
|
970 |
s->rxmem = g_malloc(s->c_rxmem); |
971 |
return;
|
972 |
|
973 |
xilinx_enet_realize_fail:
|
974 |
if (!*errp) {
|
975 |
*errp = local_errp; |
976 |
} |
977 |
} |
978 |
|
979 |
static void xilinx_enet_init(Object *obj) |
980 |
{ |
981 |
XilinxAXIEnet *s = XILINX_AXI_ENET(obj); |
982 |
SysBusDevice *sbd = SYS_BUS_DEVICE(obj); |
983 |
Error *errp = NULL;
|
984 |
|
985 |
object_property_add_link(obj, "axistream-connected", TYPE_STREAM_SLAVE,
|
986 |
(Object **) &s->tx_data_dev, &errp); |
987 |
assert_no_error(errp); |
988 |
object_property_add_link(obj, "axistream-control-connected",
|
989 |
TYPE_STREAM_SLAVE, |
990 |
(Object **) &s->tx_control_dev, &errp); |
991 |
assert_no_error(errp); |
992 |
|
993 |
object_initialize(&s->rx_data_dev, TYPE_XILINX_AXI_ENET_DATA_STREAM); |
994 |
object_initialize(&s->rx_control_dev, TYPE_XILINX_AXI_ENET_CONTROL_STREAM); |
995 |
object_property_add_child(OBJECT(s), "axistream-connected-target",
|
996 |
(Object *)&s->rx_data_dev, &errp); |
997 |
assert_no_error(errp); |
998 |
object_property_add_child(OBJECT(s), "axistream-control-connected-target",
|
999 |
(Object *)&s->rx_control_dev, &errp); |
1000 |
assert_no_error(errp); |
1001 |
|
1002 |
sysbus_init_irq(sbd, &s->irq); |
1003 |
|
1004 |
memory_region_init_io(&s->iomem, OBJECT(s), &enet_ops, s, "enet", 0x40000); |
1005 |
sysbus_init_mmio(sbd, &s->iomem); |
1006 |
} |
1007 |
|
1008 |
static Property xilinx_enet_properties[] = {
|
1009 |
DEFINE_PROP_UINT32("phyaddr", XilinxAXIEnet, c_phyaddr, 7), |
1010 |
DEFINE_PROP_UINT32("rxmem", XilinxAXIEnet, c_rxmem, 0x1000), |
1011 |
DEFINE_PROP_UINT32("txmem", XilinxAXIEnet, c_txmem, 0x1000), |
1012 |
DEFINE_NIC_PROPERTIES(XilinxAXIEnet, conf), |
1013 |
DEFINE_PROP_END_OF_LIST(), |
1014 |
}; |
1015 |
|
1016 |
static void xilinx_enet_class_init(ObjectClass *klass, void *data) |
1017 |
{ |
1018 |
DeviceClass *dc = DEVICE_CLASS(klass); |
1019 |
|
1020 |
dc->realize = xilinx_enet_realize; |
1021 |
dc->props = xilinx_enet_properties; |
1022 |
dc->reset = xilinx_axienet_reset; |
1023 |
} |
1024 |
|
1025 |
static void xilinx_enet_stream_class_init(ObjectClass *klass, void *data) |
1026 |
{ |
1027 |
StreamSlaveClass *ssc = STREAM_SLAVE_CLASS(klass); |
1028 |
|
1029 |
ssc->push = data; |
1030 |
} |
1031 |
|
1032 |
static const TypeInfo xilinx_enet_info = { |
1033 |
.name = TYPE_XILINX_AXI_ENET, |
1034 |
.parent = TYPE_SYS_BUS_DEVICE, |
1035 |
.instance_size = sizeof(XilinxAXIEnet),
|
1036 |
.class_init = xilinx_enet_class_init, |
1037 |
.instance_init = xilinx_enet_init, |
1038 |
}; |
1039 |
|
1040 |
static const TypeInfo xilinx_enet_data_stream_info = { |
1041 |
.name = TYPE_XILINX_AXI_ENET_DATA_STREAM, |
1042 |
.parent = TYPE_OBJECT, |
1043 |
.instance_size = sizeof(struct XilinxAXIEnetStreamSlave), |
1044 |
.class_init = xilinx_enet_stream_class_init, |
1045 |
.class_data = xilinx_axienet_data_stream_push, |
1046 |
.interfaces = (InterfaceInfo[]) { |
1047 |
{ TYPE_STREAM_SLAVE }, |
1048 |
{ } |
1049 |
} |
1050 |
}; |
1051 |
|
1052 |
static const TypeInfo xilinx_enet_control_stream_info = { |
1053 |
.name = TYPE_XILINX_AXI_ENET_CONTROL_STREAM, |
1054 |
.parent = TYPE_OBJECT, |
1055 |
.instance_size = sizeof(struct XilinxAXIEnetStreamSlave), |
1056 |
.class_init = xilinx_enet_stream_class_init, |
1057 |
.class_data = xilinx_axienet_control_stream_push, |
1058 |
.interfaces = (InterfaceInfo[]) { |
1059 |
{ TYPE_STREAM_SLAVE }, |
1060 |
{ } |
1061 |
} |
1062 |
}; |
1063 |
|
1064 |
static void xilinx_enet_register_types(void) |
1065 |
{ |
1066 |
type_register_static(&xilinx_enet_info); |
1067 |
type_register_static(&xilinx_enet_data_stream_info); |
1068 |
type_register_static(&xilinx_enet_control_stream_info); |
1069 |
} |
1070 |
|
1071 |
type_init(xilinx_enet_register_types) |