2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2016 Alexander Motin <mav@FreeBSD.org>
5 * Copyright (c) 2015 Peter Grehan <grehan@freebsd.org>
6 * Copyright (c) 2013 Jeremiah Lott, Avere Systems
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer
14 * in this position and unchanged.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 #include <sys/cdefs.h>
33 __FBSDID("$FreeBSD$");
35 #include <sys/types.h>
36 #ifndef WITHOUT_CAPSICUM
37 #include <sys/capsicum.h>
39 #include <sys/limits.h>
40 #include <sys/ioctl.h>
42 #include <net/ethernet.h>
43 #include <netinet/in.h>
44 #include <netinet/tcp.h>
46 #ifndef WITHOUT_CAPSICUM
47 #include <capsicum_helpers.h>
59 #include <pthread_np.h>
61 #include "e1000_regs.h"
62 #include "e1000_defines.h"
68 #include "net_utils.h"
69 #include "net_backends.h"
71 /* Hardware/register definitions XXX: move some to common code. */
72 #define E82545_VENDOR_ID_INTEL 0x8086
73 #define E82545_DEV_ID_82545EM_COPPER 0x100F
74 #define E82545_SUBDEV_ID 0x1008
76 #define E82545_REVISION_4 4
78 #define E82545_MDIC_DATA_MASK 0x0000FFFF
79 #define E82545_MDIC_OP_MASK 0x0c000000
80 #define E82545_MDIC_IE 0x20000000
82 #define E82545_EECD_FWE_DIS 0x00000010 /* Flash writes disabled */
83 #define E82545_EECD_FWE_EN 0x00000020 /* Flash writes enabled */
84 #define E82545_EECD_FWE_MASK 0x00000030 /* Flash writes mask */
86 #define E82545_BAR_REGISTER 0
87 #define E82545_BAR_REGISTER_LEN (128*1024)
88 #define E82545_BAR_FLASH 1
89 #define E82545_BAR_FLASH_LEN (64*1024)
90 #define E82545_BAR_IO 2
91 #define E82545_BAR_IO_LEN 8
93 #define E82545_IOADDR 0x00000000
94 #define E82545_IODATA 0x00000004
95 #define E82545_IO_REGISTER_MAX 0x0001FFFF
96 #define E82545_IO_FLASH_BASE 0x00080000
97 #define E82545_IO_FLASH_MAX 0x000FFFFF
99 #define E82545_ARRAY_ENTRY(reg, offset) (reg + (offset<<2))
100 #define E82545_RAR_MAX 15
101 #define E82545_MTA_MAX 127
102 #define E82545_VFTA_MAX 127
104 /* Slightly modified from the driver versions, hardcoded for 3 opcode bits,
105 * followed by 6 address bits.
106 * TODO: make opcode bits and addr bits configurable?
107 * NVM Commands - Microwire */
108 #define E82545_NVM_OPCODE_BITS 3
109 #define E82545_NVM_ADDR_BITS 6
110 #define E82545_NVM_DATA_BITS 16
111 #define E82545_NVM_OPADDR_BITS (E82545_NVM_OPCODE_BITS + E82545_NVM_ADDR_BITS)
112 #define E82545_NVM_ADDR_MASK ((1 << E82545_NVM_ADDR_BITS)-1)
113 #define E82545_NVM_OPCODE_MASK \
114 (((1 << E82545_NVM_OPCODE_BITS) - 1) << E82545_NVM_ADDR_BITS)
115 #define E82545_NVM_OPCODE_READ (0x6 << E82545_NVM_ADDR_BITS) /* read */
116 #define E82545_NVM_OPCODE_WRITE (0x5 << E82545_NVM_ADDR_BITS) /* write */
117 #define E82545_NVM_OPCODE_ERASE (0x7 << E82545_NVM_ADDR_BITS) /* erase */
118 #define E82545_NVM_OPCODE_EWEN (0x4 << E82545_NVM_ADDR_BITS) /* wr-enable */
120 #define E82545_NVM_EEPROM_SIZE 64 /* 64 * 16-bit values == 128K */
122 #define E1000_ICR_SRPD 0x00010000
124 /* This is an arbitrary number. There is no hard limit on the chip. */
125 #define I82545_MAX_TXSEGS 64
127 /* Legacy receive descriptor */
128 struct e1000_rx_desc {
129 uint64_t buffer_addr; /* Address of the descriptor's data buffer */
130 uint16_t length; /* Length of data DMAed into data buffer */
131 uint16_t csum; /* Packet checksum */
132 uint8_t status; /* Descriptor status */
133 uint8_t errors; /* Descriptor Errors */
137 /* Transmit descriptor types */
138 #define E1000_TXD_MASK (E1000_TXD_CMD_DEXT | 0x00F00000)
139 #define E1000_TXD_TYP_L (0)
140 #define E1000_TXD_TYP_C (E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_C)
141 #define E1000_TXD_TYP_D (E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D)
143 /* Legacy transmit descriptor */
144 struct e1000_tx_desc {
145 uint64_t buffer_addr; /* Address of the descriptor's data buffer */
149 uint16_t length; /* Data buffer length */
150 uint8_t cso; /* Checksum offset */
151 uint8_t cmd; /* Descriptor control */
157 uint8_t status; /* Descriptor status */
158 uint8_t css; /* Checksum start */
164 /* Context descriptor */
165 struct e1000_context_desc {
169 uint8_t ipcss; /* IP checksum start */
170 uint8_t ipcso; /* IP checksum offset */
171 uint16_t ipcse; /* IP checksum end */
177 uint8_t tucss; /* TCP checksum start */
178 uint8_t tucso; /* TCP checksum offset */
179 uint16_t tucse; /* TCP checksum end */
182 uint32_t cmd_and_length;
186 uint8_t status; /* Descriptor status */
187 uint8_t hdr_len; /* Header length */
188 uint16_t mss; /* Maximum segment size */
193 /* Data descriptor */
194 struct e1000_data_desc {
195 uint64_t buffer_addr; /* Address of the descriptor's buffer address */
199 uint16_t length; /* Data buffer length */
207 uint8_t status; /* Descriptor status */
208 uint8_t popts; /* Packet Options */
214 union e1000_tx_udesc {
215 struct e1000_tx_desc td;
216 struct e1000_context_desc cd;
217 struct e1000_data_desc dd;
220 /* Tx checksum info for a packet. */
222 int ck_valid; /* ck_info is valid */
223 uint8_t ck_start; /* start byte of cksum calcuation */
224 uint8_t ck_off; /* offset of cksum insertion */
225 uint16_t ck_len; /* length of cksum calc: 0 is to packet-end */
231 static int e82545_debug = 0;
232 #define DPRINTF(msg,params...) if (e82545_debug) fprintf(stderr, "e82545: " msg, params)
233 #define WPRINTF(msg,params...) fprintf(stderr, "e82545: " msg, params)
235 #define MIN(a,b) (((a)<(b))?(a):(b))
236 #define MAX(a,b) (((a)>(b))?(a):(b))
238 /* s/w representation of the RAL/RAH regs */
242 struct ether_addr eu_eth;
246 struct e82545_softc {
247 struct pci_devinst *esc_pi;
248 struct vmctx *esc_ctx;
249 struct mevent *esc_mevpitr;
250 pthread_mutex_t esc_mtx;
251 struct ether_addr esc_mac;
252 net_backend_t *esc_be;
255 uint32_t esc_CTRL; /* x0000 device ctl */
256 uint32_t esc_FCAL; /* x0028 flow ctl addr lo */
257 uint32_t esc_FCAH; /* x002C flow ctl addr hi */
258 uint32_t esc_FCT; /* x0030 flow ctl type */
259 uint32_t esc_VET; /* x0038 VLAN eth type */
260 uint32_t esc_FCTTV; /* x0170 flow ctl tx timer */
261 uint32_t esc_LEDCTL; /* x0E00 LED control */
262 uint32_t esc_PBA; /* x1000 pkt buffer allocation */
264 /* Interrupt control */
265 int esc_irq_asserted;
266 uint32_t esc_ICR; /* x00C0 cause read/clear */
267 uint32_t esc_ITR; /* x00C4 intr throttling */
268 uint32_t esc_ICS; /* x00C8 cause set */
269 uint32_t esc_IMS; /* x00D0 mask set/read */
270 uint32_t esc_IMC; /* x00D8 mask clear */
273 union e1000_tx_udesc *esc_txdesc;
274 struct e1000_context_desc esc_txctx;
275 pthread_t esc_tx_tid;
276 pthread_cond_t esc_tx_cond;
279 uint32_t esc_TXCW; /* x0178 transmit config */
280 uint32_t esc_TCTL; /* x0400 transmit ctl */
281 uint32_t esc_TIPG; /* x0410 inter-packet gap */
282 uint16_t esc_AIT; /* x0458 Adaptive Interframe Throttle */
283 uint64_t esc_tdba; /* verified 64-bit desc table addr */
284 uint32_t esc_TDBAL; /* x3800 desc table addr, low bits */
285 uint32_t esc_TDBAH; /* x3804 desc table addr, hi 32-bits */
286 uint32_t esc_TDLEN; /* x3808 # descriptors in bytes */
287 uint16_t esc_TDH; /* x3810 desc table head idx */
288 uint16_t esc_TDHr; /* internal read version of TDH */
289 uint16_t esc_TDT; /* x3818 desc table tail idx */
290 uint32_t esc_TIDV; /* x3820 intr delay */
291 uint32_t esc_TXDCTL; /* x3828 desc control */
292 uint32_t esc_TADV; /* x382C intr absolute delay */
294 /* L2 frame acceptance */
295 struct eth_uni esc_uni[16]; /* 16 x unicast MAC addresses */
296 uint32_t esc_fmcast[128]; /* Multicast filter bit-match */
297 uint32_t esc_fvlan[128]; /* VLAN 4096-bit filter */
300 struct e1000_rx_desc *esc_rxdesc;
301 pthread_cond_t esc_rx_cond;
305 uint32_t esc_RCTL; /* x0100 receive ctl */
306 uint32_t esc_FCRTL; /* x2160 flow cntl thresh, low */
307 uint32_t esc_FCRTH; /* x2168 flow cntl thresh, hi */
308 uint64_t esc_rdba; /* verified 64-bit desc table addr */
309 uint32_t esc_RDBAL; /* x2800 desc table addr, low bits */
310 uint32_t esc_RDBAH; /* x2804 desc table addr, hi 32-bits*/
311 uint32_t esc_RDLEN; /* x2808 #descriptors */
312 uint16_t esc_RDH; /* x2810 desc table head idx */
313 uint16_t esc_RDT; /* x2818 desc table tail idx */
314 uint32_t esc_RDTR; /* x2820 intr delay */
315 uint32_t esc_RXDCTL; /* x2828 desc control */
316 uint32_t esc_RADV; /* x282C intr absolute delay */
317 uint32_t esc_RSRPD; /* x2C00 recv small packet detect */
318 uint32_t esc_RXCSUM; /* x5000 receive cksum ctl */
320 /* IO Port register access */
323 /* Shadow copy of MDIC */
324 uint32_t mdi_control;
325 /* Shadow copy of EECD */
326 uint32_t eeprom_control;
327 /* Latest NVM in/out */
331 uint32_t missed_pkt_count; /* dropped for no room in rx queue */
332 uint32_t pkt_rx_by_size[6];
333 uint32_t pkt_tx_by_size[6];
334 uint32_t good_pkt_rx_count;
335 uint32_t bcast_pkt_rx_count;
336 uint32_t mcast_pkt_rx_count;
337 uint32_t good_pkt_tx_count;
338 uint32_t bcast_pkt_tx_count;
339 uint32_t mcast_pkt_tx_count;
340 uint32_t oversize_rx_count;
341 uint32_t tso_tx_count;
342 uint64_t good_octets_rx;
343 uint64_t good_octets_tx;
344 uint64_t missed_octets; /* counts missed and oversized */
346 uint8_t nvm_bits:6; /* number of bits remaining in/out */
348 #define E82545_NVM_MODE_OPADDR 0x0
349 #define E82545_NVM_MODE_DATAIN 0x1
350 #define E82545_NVM_MODE_DATAOUT 0x2
352 uint16_t eeprom_data[E82545_NVM_EEPROM_SIZE];
355 static void e82545_reset(struct e82545_softc *sc, int dev);
356 static void e82545_rx_enable(struct e82545_softc *sc);
357 static void e82545_rx_disable(struct e82545_softc *sc);
358 static void e82545_rx_callback(int fd, enum ev_type type, void *param);
359 static void e82545_tx_start(struct e82545_softc *sc);
360 static void e82545_tx_enable(struct e82545_softc *sc);
361 static void e82545_tx_disable(struct e82545_softc *sc);
364 e82545_size_stat_index(uint32_t size)
368 } else if (size >= 1024) {
372 return (ffs(size) - 6);
377 e82545_init_eeprom(struct e82545_softc *sc)
379 uint16_t checksum, i;
382 sc->eeprom_data[NVM_MAC_ADDR] = ((uint16_t)sc->esc_mac.octet[0]) |
383 (((uint16_t)sc->esc_mac.octet[1]) << 8);
384 sc->eeprom_data[NVM_MAC_ADDR+1] = ((uint16_t)sc->esc_mac.octet[2]) |
385 (((uint16_t)sc->esc_mac.octet[3]) << 8);
386 sc->eeprom_data[NVM_MAC_ADDR+2] = ((uint16_t)sc->esc_mac.octet[4]) |
387 (((uint16_t)sc->esc_mac.octet[5]) << 8);
390 sc->eeprom_data[NVM_SUB_DEV_ID] = E82545_SUBDEV_ID;
391 sc->eeprom_data[NVM_SUB_VEN_ID] = E82545_VENDOR_ID_INTEL;
392 sc->eeprom_data[NVM_DEV_ID] = E82545_DEV_ID_82545EM_COPPER;
393 sc->eeprom_data[NVM_VEN_ID] = E82545_VENDOR_ID_INTEL;
395 /* fill in the checksum */
397 for (i = 0; i < NVM_CHECKSUM_REG; i++) {
398 checksum += sc->eeprom_data[i];
400 checksum = NVM_SUM - checksum;
401 sc->eeprom_data[NVM_CHECKSUM_REG] = checksum;
402 DPRINTF("eeprom checksum: 0x%x\r\n", checksum);
406 e82545_write_mdi(struct e82545_softc *sc, uint8_t reg_addr,
407 uint8_t phy_addr, uint32_t data)
409 DPRINTF("Write mdi reg:0x%x phy:0x%x data: 0x%x\r\n", reg_addr, phy_addr, data);
413 e82545_read_mdi(struct e82545_softc *sc, uint8_t reg_addr,
416 //DPRINTF("Read mdi reg:0x%x phy:0x%x\r\n", reg_addr, phy_addr);
419 return (MII_SR_LINK_STATUS | MII_SR_AUTONEG_CAPS |
420 MII_SR_AUTONEG_COMPLETE);
421 case PHY_AUTONEG_ADV:
422 return NWAY_AR_SELECTOR_FIELD;
425 case PHY_1000T_STATUS:
426 return (SR_1000T_LP_FD_CAPS | SR_1000T_REMOTE_RX_STATUS |
427 SR_1000T_LOCAL_RX_STATUS);
429 return (M88E1011_I_PHY_ID >> 16) & 0xFFFF;
431 return (M88E1011_I_PHY_ID | E82545_REVISION_4) & 0xFFFF;
433 DPRINTF("Unknown mdi read reg:0x%x phy:0x%x\r\n", reg_addr, phy_addr);
440 e82545_eecd_strobe(struct e82545_softc *sc)
442 /* Microwire state machine */
444 DPRINTF("eeprom state machine srtobe "
445 "0x%x 0x%x 0x%x 0x%x\r\n",
446 sc->nvm_mode, sc->nvm_bits,
447 sc->nvm_opaddr, sc->nvm_data);*/
449 if (sc->nvm_bits == 0) {
450 DPRINTF("eeprom state machine not expecting data! "
451 "0x%x 0x%x 0x%x 0x%x\r\n",
452 sc->nvm_mode, sc->nvm_bits,
453 sc->nvm_opaddr, sc->nvm_data);
457 if (sc->nvm_mode == E82545_NVM_MODE_DATAOUT) {
459 if (sc->nvm_data & 0x8000) {
460 sc->eeprom_control |= E1000_EECD_DO;
462 sc->eeprom_control &= ~E1000_EECD_DO;
465 if (sc->nvm_bits == 0) {
466 /* read done, back to opcode mode. */
468 sc->nvm_mode = E82545_NVM_MODE_OPADDR;
469 sc->nvm_bits = E82545_NVM_OPADDR_BITS;
471 } else if (sc->nvm_mode == E82545_NVM_MODE_DATAIN) {
474 if (sc->eeprom_control & E1000_EECD_DI) {
477 if (sc->nvm_bits == 0) {
479 uint16_t op = sc->nvm_opaddr & E82545_NVM_OPCODE_MASK;
480 uint16_t addr = sc->nvm_opaddr & E82545_NVM_ADDR_MASK;
481 if (op != E82545_NVM_OPCODE_WRITE) {
482 DPRINTF("Illegal eeprom write op 0x%x\r\n",
484 } else if (addr >= E82545_NVM_EEPROM_SIZE) {
485 DPRINTF("Illegal eeprom write addr 0x%x\r\n",
488 DPRINTF("eeprom write eeprom[0x%x] = 0x%x\r\n",
490 sc->eeprom_data[addr] = sc->nvm_data;
492 /* back to opcode mode */
494 sc->nvm_mode = E82545_NVM_MODE_OPADDR;
495 sc->nvm_bits = E82545_NVM_OPADDR_BITS;
497 } else if (sc->nvm_mode == E82545_NVM_MODE_OPADDR) {
498 sc->nvm_opaddr <<= 1;
499 if (sc->eeprom_control & E1000_EECD_DI) {
502 if (sc->nvm_bits == 0) {
503 uint16_t op = sc->nvm_opaddr & E82545_NVM_OPCODE_MASK;
505 case E82545_NVM_OPCODE_EWEN:
506 DPRINTF("eeprom write enable: 0x%x\r\n",
508 /* back to opcode mode */
510 sc->nvm_mode = E82545_NVM_MODE_OPADDR;
511 sc->nvm_bits = E82545_NVM_OPADDR_BITS;
513 case E82545_NVM_OPCODE_READ:
515 uint16_t addr = sc->nvm_opaddr &
516 E82545_NVM_ADDR_MASK;
517 sc->nvm_mode = E82545_NVM_MODE_DATAOUT;
518 sc->nvm_bits = E82545_NVM_DATA_BITS;
519 if (addr < E82545_NVM_EEPROM_SIZE) {
520 sc->nvm_data = sc->eeprom_data[addr];
521 DPRINTF("eeprom read: eeprom[0x%x] = 0x%x\r\n",
524 DPRINTF("eeprom illegal read: 0x%x\r\n",
530 case E82545_NVM_OPCODE_WRITE:
531 sc->nvm_mode = E82545_NVM_MODE_DATAIN;
532 sc->nvm_bits = E82545_NVM_DATA_BITS;
536 DPRINTF("eeprom unknown op: 0x%x\r\r",
538 /* back to opcode mode */
540 sc->nvm_mode = E82545_NVM_MODE_OPADDR;
541 sc->nvm_bits = E82545_NVM_OPADDR_BITS;
545 DPRINTF("eeprom state machine wrong state! "
546 "0x%x 0x%x 0x%x 0x%x\r\n",
547 sc->nvm_mode, sc->nvm_bits,
548 sc->nvm_opaddr, sc->nvm_data);
553 e82545_itr_callback(int fd, enum ev_type type, void *param)
556 struct e82545_softc *sc = param;
558 pthread_mutex_lock(&sc->esc_mtx);
559 new = sc->esc_ICR & sc->esc_IMS;
560 if (new && !sc->esc_irq_asserted) {
561 DPRINTF("itr callback: lintr assert %x\r\n", new);
562 sc->esc_irq_asserted = 1;
563 pci_lintr_assert(sc->esc_pi);
565 mevent_delete(sc->esc_mevpitr);
566 sc->esc_mevpitr = NULL;
568 pthread_mutex_unlock(&sc->esc_mtx);
572 e82545_icr_assert(struct e82545_softc *sc, uint32_t bits)
576 DPRINTF("icr assert: 0x%x\r\n", bits);
579 * An interrupt is only generated if bits are set that
580 * aren't already in the ICR, these bits are unmasked,
581 * and there isn't an interrupt already pending.
583 new = bits & ~sc->esc_ICR & sc->esc_IMS;
587 DPRINTF("icr assert: masked %x, ims %x\r\n", new, sc->esc_IMS);
588 } else if (sc->esc_mevpitr != NULL) {
589 DPRINTF("icr assert: throttled %x, ims %x\r\n", new, sc->esc_IMS);
590 } else if (!sc->esc_irq_asserted) {
591 DPRINTF("icr assert: lintr assert %x\r\n", new);
592 sc->esc_irq_asserted = 1;
593 pci_lintr_assert(sc->esc_pi);
594 if (sc->esc_ITR != 0) {
595 sc->esc_mevpitr = mevent_add(
596 (sc->esc_ITR + 3905) / 3906, /* 256ns -> 1ms */
597 EVF_TIMER, e82545_itr_callback, sc);
603 e82545_ims_change(struct e82545_softc *sc, uint32_t bits)
608 * Changing the mask may allow previously asserted
609 * but masked interrupt requests to generate an interrupt.
611 new = bits & sc->esc_ICR & ~sc->esc_IMS;
615 DPRINTF("ims change: masked %x, ims %x\r\n", new, sc->esc_IMS);
616 } else if (sc->esc_mevpitr != NULL) {
617 DPRINTF("ims change: throttled %x, ims %x\r\n", new, sc->esc_IMS);
618 } else if (!sc->esc_irq_asserted) {
619 DPRINTF("ims change: lintr assert %x\n\r", new);
620 sc->esc_irq_asserted = 1;
621 pci_lintr_assert(sc->esc_pi);
622 if (sc->esc_ITR != 0) {
623 sc->esc_mevpitr = mevent_add(
624 (sc->esc_ITR + 3905) / 3906, /* 256ns -> 1ms */
625 EVF_TIMER, e82545_itr_callback, sc);
631 e82545_icr_deassert(struct e82545_softc *sc, uint32_t bits)
634 DPRINTF("icr deassert: 0x%x\r\n", bits);
635 sc->esc_ICR &= ~bits;
638 * If there are no longer any interrupt sources and there
639 * was an asserted interrupt, clear it
641 if (sc->esc_irq_asserted && !(sc->esc_ICR & sc->esc_IMS)) {
642 DPRINTF("icr deassert: lintr deassert %x\r\n", bits);
643 pci_lintr_deassert(sc->esc_pi);
644 sc->esc_irq_asserted = 0;
649 e82545_intr_write(struct e82545_softc *sc, uint32_t offset, uint32_t value)
652 DPRINTF("intr_write: off %x, val %x\n\r", offset, value);
656 e82545_icr_deassert(sc, value);
662 sc->esc_ICS = value; /* not used: store for debug */
663 e82545_icr_assert(sc, value);
666 e82545_ims_change(sc, value);
669 sc->esc_IMC = value; /* for debug */
670 sc->esc_IMS &= ~value;
671 // XXX clear interrupts if all ICR bits now masked
672 // and interrupt was pending ?
680 e82545_intr_read(struct e82545_softc *sc, uint32_t offset)
686 DPRINTF("intr_read: off %x\n\r", offset);
690 retval = sc->esc_ICR;
692 e82545_icr_deassert(sc, ~0);
695 retval = sc->esc_ITR;
698 /* write-only register */
701 retval = sc->esc_IMS;
704 /* write-only register */
714 e82545_devctl(struct e82545_softc *sc, uint32_t val)
717 sc->esc_CTRL = val & ~E1000_CTRL_RST;
719 if (val & E1000_CTRL_RST) {
720 DPRINTF("e1k: s/w reset, ctl %x\n", val);
723 /* XXX check for phy reset ? */
727 e82545_rx_update_rdba(struct e82545_softc *sc)
730 /* XXX verify desc base/len within phys mem range */
731 sc->esc_rdba = (uint64_t)sc->esc_RDBAH << 32 |
734 /* Cache host mapping of guest descriptor array */
735 sc->esc_rxdesc = paddr_guest2host(sc->esc_ctx,
736 sc->esc_rdba, sc->esc_RDLEN);
740 e82545_rx_ctl(struct e82545_softc *sc, uint32_t val)
744 on = ((val & E1000_RCTL_EN) == E1000_RCTL_EN);
746 /* Save RCTL after stripping reserved bits 31:27,24,21,14,11:10,0 */
747 sc->esc_RCTL = val & ~0xF9204c01;
749 DPRINTF("rx_ctl - %s RCTL %x, val %x\n",
750 on ? "on" : "off", sc->esc_RCTL, val);
752 /* state change requested */
753 if (on != sc->esc_rx_enabled) {
755 /* Catch disallowed/unimplemented settings */
756 //assert(!(val & E1000_RCTL_LBM_TCVR));
758 if (sc->esc_RCTL & E1000_RCTL_LBM_TCVR) {
759 sc->esc_rx_loopback = 1;
761 sc->esc_rx_loopback = 0;
764 e82545_rx_update_rdba(sc);
765 e82545_rx_enable(sc);
767 e82545_rx_disable(sc);
768 sc->esc_rx_loopback = 0;
770 sc->esc_rxdesc = NULL;
776 e82545_tx_update_tdba(struct e82545_softc *sc)
779 /* XXX verify desc base/len within phys mem range */
780 sc->esc_tdba = (uint64_t)sc->esc_TDBAH << 32 | sc->esc_TDBAL;
782 /* Cache host mapping of guest descriptor array */
783 sc->esc_txdesc = paddr_guest2host(sc->esc_ctx, sc->esc_tdba,
788 e82545_tx_ctl(struct e82545_softc *sc, uint32_t val)
792 on = ((val & E1000_TCTL_EN) == E1000_TCTL_EN);
794 /* ignore TCTL_EN settings that don't change state */
795 if (on == sc->esc_tx_enabled)
799 e82545_tx_update_tdba(sc);
800 e82545_tx_enable(sc);
802 e82545_tx_disable(sc);
804 sc->esc_txdesc = NULL;
807 /* Save TCTL value after stripping reserved bits 31:25,23,2,0 */
808 sc->esc_TCTL = val & ~0xFE800005;
812 e82545_bufsz(uint32_t rctl)
815 switch (rctl & (E1000_RCTL_BSEX | E1000_RCTL_SZ_256)) {
816 case (E1000_RCTL_SZ_2048): return (2048);
817 case (E1000_RCTL_SZ_1024): return (1024);
818 case (E1000_RCTL_SZ_512): return (512);
819 case (E1000_RCTL_SZ_256): return (256);
820 case (E1000_RCTL_BSEX|E1000_RCTL_SZ_16384): return (16384);
821 case (E1000_RCTL_BSEX|E1000_RCTL_SZ_8192): return (8192);
822 case (E1000_RCTL_BSEX|E1000_RCTL_SZ_4096): return (4096);
824 return (256); /* Forbidden value. */
827 /* XXX one packet at a time until this is debugged */
829 e82545_rx_callback(int fd, enum ev_type type, void *param)
831 struct e82545_softc *sc = param;
832 struct e1000_rx_desc *rxd;
833 struct iovec vec[64];
834 int left, len, lim, maxpktsz, maxpktdesc, bufsz, i, n, size;
836 uint16_t *tp, tag, head;
838 pthread_mutex_lock(&sc->esc_mtx);
839 DPRINTF("rx_run: head %x, tail %x\r\n", sc->esc_RDH, sc->esc_RDT);
841 if (!sc->esc_rx_enabled || sc->esc_rx_loopback) {
842 DPRINTF("rx disabled (!%d || %d) -- packet(s) dropped\r\n",
843 sc->esc_rx_enabled, sc->esc_rx_loopback);
844 while (netbe_rx_discard(sc->esc_be) > 0) {
848 bufsz = e82545_bufsz(sc->esc_RCTL);
849 maxpktsz = (sc->esc_RCTL & E1000_RCTL_LPE) ? 16384 : 1522;
850 maxpktdesc = (maxpktsz + bufsz - 1) / bufsz;
851 size = sc->esc_RDLEN / 16;
853 left = (size + sc->esc_RDT - head) % size;
854 if (left < maxpktdesc) {
855 DPRINTF("rx overflow (%d < %d) -- packet(s) dropped\r\n",
857 while (netbe_rx_discard(sc->esc_be) > 0) {
862 sc->esc_rx_active = 1;
863 pthread_mutex_unlock(&sc->esc_mtx);
865 for (lim = size / 4; lim > 0 && left >= maxpktdesc; lim -= n) {
867 /* Grab rx descriptor pointed to by the head pointer */
868 for (i = 0; i < maxpktdesc; i++) {
869 rxd = &sc->esc_rxdesc[(head + i) % size];
870 vec[i].iov_base = paddr_guest2host(sc->esc_ctx,
871 rxd->buffer_addr, bufsz);
872 vec[i].iov_len = bufsz;
874 len = netbe_recv(sc->esc_be, vec, maxpktdesc);
876 DPRINTF("netbe_recv() returned %d\n", len);
881 * Adjust the packet length based on whether the CRC needs
882 * to be stripped or if the packet is less than the minimum
885 if (len < ETHER_MIN_LEN - ETHER_CRC_LEN)
886 len = ETHER_MIN_LEN - ETHER_CRC_LEN;
887 if (!(sc->esc_RCTL & E1000_RCTL_SECRC))
888 len += ETHER_CRC_LEN;
889 n = (len + bufsz - 1) / bufsz;
891 DPRINTF("packet read %d bytes, %d segs, head %d\r\n",
894 /* Apply VLAN filter. */
895 tp = (uint16_t *)vec[0].iov_base + 6;
896 if ((sc->esc_RCTL & E1000_RCTL_VFE) &&
897 (ntohs(tp[0]) == sc->esc_VET)) {
898 tag = ntohs(tp[1]) & 0x0fff;
899 if ((sc->esc_fvlan[tag >> 5] &
900 (1 << (tag & 0x1f))) != 0) {
901 DPRINTF("known VLAN %d\r\n", tag);
903 DPRINTF("unknown VLAN %d\r\n", tag);
909 /* Update all consumed descriptors. */
910 for (i = 0; i < n - 1; i++) {
911 rxd = &sc->esc_rxdesc[(head + i) % size];
916 rxd->status = E1000_RXD_STAT_DD;
918 rxd = &sc->esc_rxdesc[(head + i) % size];
919 rxd->length = len % bufsz;
923 /* XXX signal no checksum for now */
924 rxd->status = E1000_RXD_STAT_PIF | E1000_RXD_STAT_IXSM |
925 E1000_RXD_STAT_EOP | E1000_RXD_STAT_DD;
927 /* Schedule receive interrupts. */
928 if (len <= sc->esc_RSRPD) {
929 cause |= E1000_ICR_SRPD | E1000_ICR_RXT0;
931 /* XXX: RDRT and RADV timers should be here. */
932 cause |= E1000_ICR_RXT0;
935 head = (head + n) % size;
940 pthread_mutex_lock(&sc->esc_mtx);
941 sc->esc_rx_active = 0;
942 if (sc->esc_rx_enabled == 0)
943 pthread_cond_signal(&sc->esc_rx_cond);
946 /* Respect E1000_RCTL_RDMTS */
947 left = (size + sc->esc_RDT - head) % size;
948 if (left < (size >> (((sc->esc_RCTL >> 8) & 3) + 1)))
949 cause |= E1000_ICR_RXDMT0;
950 /* Assert all accumulated interrupts. */
952 e82545_icr_assert(sc, cause);
954 DPRINTF("rx_run done: head %x, tail %x\r\n", sc->esc_RDH, sc->esc_RDT);
955 pthread_mutex_unlock(&sc->esc_mtx);
959 e82545_carry(uint32_t sum)
962 sum = (sum & 0xFFFF) + (sum >> 16);
969 e82545_buf_checksum(uint8_t *buf, int len)
974 /* Checksum all the pairs of bytes first... */
975 for (i = 0; i < (len & ~1U); i += 2)
976 sum += *((u_int16_t *)(buf + i));
979 * If there's a single byte left over, checksum it, too.
980 * Network byte order is big-endian, so the remaining byte is
984 sum += htons(buf[i] << 8);
986 return (e82545_carry(sum));
990 e82545_iov_checksum(struct iovec *iov, int iovcnt, int off, int len)
995 /* Skip completely unneeded vectors. */
996 while (iovcnt > 0 && iov->iov_len <= off && off > 0) {
1002 /* Calculate checksum of requested range. */
1004 while (len > 0 && iovcnt > 0) {
1005 now = MIN(len, iov->iov_len - off);
1006 s = e82545_buf_checksum(iov->iov_base + off, now);
1007 sum += odd ? (s << 8) : s;
1015 return (e82545_carry(sum));
1019 * Return the transmit descriptor type.
1022 e82545_txdesc_type(uint32_t lower)
1028 if (lower & E1000_TXD_CMD_DEXT)
1029 type = lower & E1000_TXD_MASK;
1035 e82545_transmit_checksum(struct iovec *iov, int iovcnt, struct ck_info *ck)
1040 DPRINTF("tx cksum: iovcnt/s/off/len %d/%d/%d/%d\r\n",
1041 iovcnt, ck->ck_start, ck->ck_off, ck->ck_len);
1042 cklen = ck->ck_len ? ck->ck_len - ck->ck_start + 1 : INT_MAX;
1043 cksum = e82545_iov_checksum(iov, iovcnt, ck->ck_start, cklen);
1044 *(uint16_t *)((uint8_t *)iov[0].iov_base + ck->ck_off) = ~cksum;
1048 e82545_transmit_backend(struct e82545_softc *sc, struct iovec *iov, int iovcnt)
1051 if (sc->esc_be == NULL)
1054 (void) netbe_send(sc->esc_be, iov, iovcnt);
1058 e82545_transmit_done(struct e82545_softc *sc, uint16_t head, uint16_t tail,
1059 uint16_t dsize, int *tdwb)
1061 union e1000_tx_udesc *dsc;
1063 for ( ; head != tail; head = (head + 1) % dsize) {
1064 dsc = &sc->esc_txdesc[head];
1065 if (dsc->td.lower.data & E1000_TXD_CMD_RS) {
1066 dsc->td.upper.data |= E1000_TXD_STAT_DD;
1073 e82545_transmit(struct e82545_softc *sc, uint16_t head, uint16_t tail,
1074 uint16_t dsize, uint16_t *rhead, int *tdwb)
1076 uint8_t *hdr, *hdrp;
1077 struct iovec iovb[I82545_MAX_TXSEGS + 2];
1078 struct iovec tiov[I82545_MAX_TXSEGS + 2];
1079 struct e1000_context_desc *cd;
1080 struct ck_info ckinfo[2];
1082 union e1000_tx_udesc *dsc;
1083 int desc, dtype, len, ntype, iovcnt, tlen, hdrlen, vlen, tcp, tso;
1084 int mss, paylen, seg, tiovcnt, left, now, nleft, nnow, pv, pvoff;
1085 uint32_t tcpsum, tcpseq;
1086 uint16_t ipcs, tcpcs, ipid, ohead;
1088 ckinfo[0].ck_valid = ckinfo[1].ck_valid = 0;
1095 /* iovb[0/1] may be used for writable copy of headers. */
1098 for (desc = 0; ; desc++, head = (head + 1) % dsize) {
1103 dsc = &sc->esc_txdesc[head];
1104 dtype = e82545_txdesc_type(dsc->td.lower.data);
1108 case E1000_TXD_TYP_C:
1109 DPRINTF("tx ctxt desc idx %d: %016jx "
1111 head, dsc->td.buffer_addr,
1112 dsc->td.upper.data, dsc->td.lower.data);
1113 /* Save context and return */
1114 sc->esc_txctx = dsc->cd;
1116 case E1000_TXD_TYP_L:
1117 DPRINTF("tx legacy desc idx %d: %08x%08x\r\n",
1118 head, dsc->td.upper.data, dsc->td.lower.data);
1120 * legacy cksum start valid in first descriptor
1123 ckinfo[0].ck_start = dsc->td.upper.fields.css;
1125 case E1000_TXD_TYP_D:
1126 DPRINTF("tx data desc idx %d: %08x%08x\r\n",
1127 head, dsc->td.upper.data, dsc->td.lower.data);
1134 /* Descriptor type must be consistent */
1135 assert(dtype == ntype);
1136 DPRINTF("tx next desc idx %d: %08x%08x\r\n",
1137 head, dsc->td.upper.data, dsc->td.lower.data);
1140 len = (dtype == E1000_TXD_TYP_L) ? dsc->td.lower.flags.length :
1141 dsc->dd.lower.data & 0xFFFFF;
1144 /* Strip checksum supplied by guest. */
1145 if ((dsc->td.lower.data & E1000_TXD_CMD_EOP) != 0 &&
1146 (dsc->td.lower.data & E1000_TXD_CMD_IFCS) == 0)
1149 if (iovcnt < I82545_MAX_TXSEGS) {
1150 iov[iovcnt].iov_base = paddr_guest2host(
1151 sc->esc_ctx, dsc->td.buffer_addr, len);
1152 iov[iovcnt].iov_len = len;
1158 * Pull out info that is valid in the final descriptor
1159 * and exit descriptor loop.
1161 if (dsc->td.lower.data & E1000_TXD_CMD_EOP) {
1162 if (dtype == E1000_TXD_TYP_L) {
1163 if (dsc->td.lower.data & E1000_TXD_CMD_IC) {
1164 ckinfo[0].ck_valid = 1;
1166 dsc->td.lower.flags.cso;
1167 ckinfo[0].ck_len = 0;
1170 cd = &sc->esc_txctx;
1171 if (dsc->dd.lower.data & E1000_TXD_CMD_TSE)
1173 if (dsc->dd.upper.fields.popts &
1174 E1000_TXD_POPTS_IXSM)
1175 ckinfo[0].ck_valid = 1;
1176 if (dsc->dd.upper.fields.popts &
1177 E1000_TXD_POPTS_IXSM || tso) {
1178 ckinfo[0].ck_start =
1179 cd->lower_setup.ip_fields.ipcss;
1181 cd->lower_setup.ip_fields.ipcso;
1183 cd->lower_setup.ip_fields.ipcse;
1185 if (dsc->dd.upper.fields.popts &
1186 E1000_TXD_POPTS_TXSM)
1187 ckinfo[1].ck_valid = 1;
1188 if (dsc->dd.upper.fields.popts &
1189 E1000_TXD_POPTS_TXSM || tso) {
1190 ckinfo[1].ck_start =
1191 cd->upper_setup.tcp_fields.tucss;
1193 cd->upper_setup.tcp_fields.tucso;
1195 cd->upper_setup.tcp_fields.tucse;
1202 if (iovcnt > I82545_MAX_TXSEGS) {
1203 WPRINTF("tx too many descriptors (%d > %d) -- dropped\r\n",
1204 iovcnt, I82545_MAX_TXSEGS);
1209 /* Estimate writable space for VLAN header insertion. */
1210 if ((sc->esc_CTRL & E1000_CTRL_VME) &&
1211 (dsc->td.lower.data & E1000_TXD_CMD_VLE)) {
1212 hdrlen = ETHER_ADDR_LEN*2;
1213 vlen = ETHER_VLAN_ENCAP_LEN;
1216 /* Estimate required writable space for checksums. */
1217 if (ckinfo[0].ck_valid)
1218 hdrlen = MAX(hdrlen, ckinfo[0].ck_off + 2);
1219 if (ckinfo[1].ck_valid)
1220 hdrlen = MAX(hdrlen, ckinfo[1].ck_off + 2);
1221 /* Round up writable space to the first vector. */
1222 if (hdrlen != 0 && iov[0].iov_len > hdrlen &&
1223 iov[0].iov_len < hdrlen + 100)
1224 hdrlen = iov[0].iov_len;
1226 /* In case of TSO header length provided by software. */
1227 hdrlen = sc->esc_txctx.tcp_seg_setup.fields.hdr_len;
1230 /* Allocate, fill and prepend writable header vector. */
1232 hdr = __builtin_alloca(hdrlen + vlen);
1234 for (left = hdrlen, hdrp = hdr; left > 0;
1235 left -= now, hdrp += now) {
1236 now = MIN(left, iov->iov_len);
1237 memcpy(hdrp, iov->iov_base, now);
1238 iov->iov_base += now;
1239 iov->iov_len -= now;
1240 if (iov->iov_len == 0) {
1247 iov->iov_base = hdr;
1248 iov->iov_len = hdrlen;
1251 /* Insert VLAN tag. */
1253 hdr -= ETHER_VLAN_ENCAP_LEN;
1254 memmove(hdr, hdr + ETHER_VLAN_ENCAP_LEN, ETHER_ADDR_LEN*2);
1255 hdrlen += ETHER_VLAN_ENCAP_LEN;
1256 hdr[ETHER_ADDR_LEN*2 + 0] = sc->esc_VET >> 8;
1257 hdr[ETHER_ADDR_LEN*2 + 1] = sc->esc_VET & 0xff;
1258 hdr[ETHER_ADDR_LEN*2 + 2] = dsc->td.upper.fields.special >> 8;
1259 hdr[ETHER_ADDR_LEN*2 + 3] = dsc->td.upper.fields.special & 0xff;
1260 iov->iov_base = hdr;
1261 iov->iov_len += ETHER_VLAN_ENCAP_LEN;
1262 /* Correct checksum offsets after VLAN tag insertion. */
1263 ckinfo[0].ck_start += ETHER_VLAN_ENCAP_LEN;
1264 ckinfo[0].ck_off += ETHER_VLAN_ENCAP_LEN;
1265 if (ckinfo[0].ck_len != 0)
1266 ckinfo[0].ck_len += ETHER_VLAN_ENCAP_LEN;
1267 ckinfo[1].ck_start += ETHER_VLAN_ENCAP_LEN;
1268 ckinfo[1].ck_off += ETHER_VLAN_ENCAP_LEN;
1269 if (ckinfo[1].ck_len != 0)
1270 ckinfo[1].ck_len += ETHER_VLAN_ENCAP_LEN;
1273 /* Simple non-TSO case. */
1275 /* Calculate checksums and transmit. */
1276 if (ckinfo[0].ck_valid)
1277 e82545_transmit_checksum(iov, iovcnt, &ckinfo[0]);
1278 if (ckinfo[1].ck_valid)
1279 e82545_transmit_checksum(iov, iovcnt, &ckinfo[1]);
1280 e82545_transmit_backend(sc, iov, iovcnt);
1285 tcp = (sc->esc_txctx.cmd_and_length & E1000_TXD_CMD_TCP) != 0;
1286 mss = sc->esc_txctx.tcp_seg_setup.fields.mss;
1287 paylen = (sc->esc_txctx.cmd_and_length & 0x000fffff);
1288 DPRINTF("tx %s segmentation offload %d+%d/%d bytes %d iovs\r\n",
1289 tcp ? "TCP" : "UDP", hdrlen, paylen, mss, iovcnt);
1290 ipid = ntohs(*(uint16_t *)&hdr[ckinfo[0].ck_start + 4]);
1291 tcpseq = ntohl(*(uint32_t *)&hdr[ckinfo[1].ck_start + 4]);
1292 ipcs = *(uint16_t *)&hdr[ckinfo[0].ck_off];
1294 if (ckinfo[1].ck_valid) /* Save partial pseudo-header checksum. */
1295 tcpcs = *(uint16_t *)&hdr[ckinfo[1].ck_off];
1298 for (seg = 0, left = paylen; left > 0; seg++, left -= now) {
1299 now = MIN(left, mss);
1301 /* Construct IOVs for the segment. */
1302 /* Include whole original header. */
1303 tiov[0].iov_base = hdr;
1304 tiov[0].iov_len = hdrlen;
1306 /* Include respective part of payload IOV. */
1307 for (nleft = now; pv < iovcnt && nleft > 0; nleft -= nnow) {
1308 nnow = MIN(nleft, iov[pv].iov_len - pvoff);
1309 tiov[tiovcnt].iov_base = iov[pv].iov_base + pvoff;
1310 tiov[tiovcnt++].iov_len = nnow;
1311 if (pvoff + nnow == iov[pv].iov_len) {
1317 DPRINTF("tx segment %d %d+%d bytes %d iovs\r\n",
1318 seg, hdrlen, now, tiovcnt);
1320 /* Update IP header. */
1321 if (sc->esc_txctx.cmd_and_length & E1000_TXD_CMD_IP) {
1322 /* IPv4 -- set length and ID */
1323 *(uint16_t *)&hdr[ckinfo[0].ck_start + 2] =
1324 htons(hdrlen - ckinfo[0].ck_start + now);
1325 *(uint16_t *)&hdr[ckinfo[0].ck_start + 4] =
1328 /* IPv6 -- set length */
1329 *(uint16_t *)&hdr[ckinfo[0].ck_start + 4] =
1330 htons(hdrlen - ckinfo[0].ck_start - 40 +
1334 /* Update pseudo-header checksum. */
1336 tcpsum += htons(hdrlen - ckinfo[1].ck_start + now);
1338 /* Update TCP/UDP headers. */
1340 /* Update sequence number and FIN/PUSH flags. */
1341 *(uint32_t *)&hdr[ckinfo[1].ck_start + 4] =
1342 htonl(tcpseq + paylen - left);
1344 hdr[ckinfo[1].ck_start + 13] &=
1345 ~(TH_FIN | TH_PUSH);
1348 /* Update payload length. */
1349 *(uint32_t *)&hdr[ckinfo[1].ck_start + 4] =
1350 hdrlen - ckinfo[1].ck_start + now;
1353 /* Calculate checksums and transmit. */
1354 if (ckinfo[0].ck_valid) {
1355 *(uint16_t *)&hdr[ckinfo[0].ck_off] = ipcs;
1356 e82545_transmit_checksum(tiov, tiovcnt, &ckinfo[0]);
1358 if (ckinfo[1].ck_valid) {
1359 *(uint16_t *)&hdr[ckinfo[1].ck_off] =
1360 e82545_carry(tcpsum);
1361 e82545_transmit_checksum(tiov, tiovcnt, &ckinfo[1]);
1363 e82545_transmit_backend(sc, tiov, tiovcnt);
1367 head = (head + 1) % dsize;
1368 e82545_transmit_done(sc, ohead, head, dsize, tdwb);
1375 e82545_tx_run(struct e82545_softc *sc)
1378 uint16_t head, rhead, tail, size;
1379 int lim, tdwb, sent;
1383 size = sc->esc_TDLEN / 16;
1384 DPRINTF("tx_run: head %x, rhead %x, tail %x\r\n",
1385 sc->esc_TDH, sc->esc_TDHr, sc->esc_TDT);
1387 pthread_mutex_unlock(&sc->esc_mtx);
1390 for (lim = size / 4; sc->esc_tx_enabled && lim > 0; lim -= sent) {
1391 sent = e82545_transmit(sc, head, tail, size, &rhead, &tdwb);
1396 pthread_mutex_lock(&sc->esc_mtx);
1399 sc->esc_TDHr = rhead;
1402 cause |= E1000_ICR_TXDW;
1403 if (lim != size / 4 && sc->esc_TDH == sc->esc_TDT)
1404 cause |= E1000_ICR_TXQE;
1406 e82545_icr_assert(sc, cause);
1408 DPRINTF("tx_run done: head %x, rhead %x, tail %x\r\n",
1409 sc->esc_TDH, sc->esc_TDHr, sc->esc_TDT);
1412 static _Noreturn void *
1413 e82545_tx_thread(void *param)
1415 struct e82545_softc *sc = param;
1417 pthread_mutex_lock(&sc->esc_mtx);
1419 while (!sc->esc_tx_enabled || sc->esc_TDHr == sc->esc_TDT) {
1420 if (sc->esc_tx_enabled && sc->esc_TDHr != sc->esc_TDT)
1422 sc->esc_tx_active = 0;
1423 if (sc->esc_tx_enabled == 0)
1424 pthread_cond_signal(&sc->esc_tx_cond);
1425 pthread_cond_wait(&sc->esc_tx_cond, &sc->esc_mtx);
1427 sc->esc_tx_active = 1;
1429 /* Process some tx descriptors. Lock dropped inside. */
1435 e82545_tx_start(struct e82545_softc *sc)
1438 if (sc->esc_tx_active == 0)
1439 pthread_cond_signal(&sc->esc_tx_cond);
1443 e82545_tx_enable(struct e82545_softc *sc)
1446 sc->esc_tx_enabled = 1;
1450 e82545_tx_disable(struct e82545_softc *sc)
1453 sc->esc_tx_enabled = 0;
1454 while (sc->esc_tx_active)
1455 pthread_cond_wait(&sc->esc_tx_cond, &sc->esc_mtx);
1459 e82545_rx_enable(struct e82545_softc *sc)
1462 sc->esc_rx_enabled = 1;
1466 e82545_rx_disable(struct e82545_softc *sc)
1469 sc->esc_rx_enabled = 0;
1470 while (sc->esc_rx_active)
1471 pthread_cond_wait(&sc->esc_rx_cond, &sc->esc_mtx);
1475 e82545_write_ra(struct e82545_softc *sc, int reg, uint32_t wval)
1483 eu = &sc->esc_uni[idx];
1487 eu->eu_valid = ((wval & E1000_RAH_AV) == E1000_RAH_AV);
1488 eu->eu_addrsel = (wval >> 16) & 0x3;
1489 eu->eu_eth.octet[5] = wval >> 8;
1490 eu->eu_eth.octet[4] = wval;
1493 eu->eu_eth.octet[3] = wval >> 24;
1494 eu->eu_eth.octet[2] = wval >> 16;
1495 eu->eu_eth.octet[1] = wval >> 8;
1496 eu->eu_eth.octet[0] = wval;
1501 e82545_read_ra(struct e82545_softc *sc, int reg)
1510 eu = &sc->esc_uni[idx];
1514 retval = (eu->eu_valid << 31) |
1515 (eu->eu_addrsel << 16) |
1516 (eu->eu_eth.octet[5] << 8) |
1517 eu->eu_eth.octet[4];
1520 retval = (eu->eu_eth.octet[3] << 24) |
1521 (eu->eu_eth.octet[2] << 16) |
1522 (eu->eu_eth.octet[1] << 8) |
1523 eu->eu_eth.octet[0];
1530 e82545_write_register(struct e82545_softc *sc, uint32_t offset, uint32_t value)
1535 DPRINTF("Unaligned register write offset:0x%x value:0x%x\r\n", offset, value);
1538 DPRINTF("Register write: 0x%x value: 0x%x\r\n", offset, value);
1542 case E1000_CTRL_DUP:
1543 e82545_devctl(sc, value);
1546 sc->esc_FCAL = value;
1549 sc->esc_FCAH = value & ~0xFFFF0000;
1552 sc->esc_FCT = value & ~0xFFFF0000;
1555 sc->esc_VET = value & ~0xFFFF0000;
1558 sc->esc_FCTTV = value & ~0xFFFF0000;
1561 sc->esc_LEDCTL = value & ~0x30303000;
1564 sc->esc_PBA = value & 0x0000FF80;
1571 e82545_intr_write(sc, offset, value);
1574 e82545_rx_ctl(sc, value);
1577 sc->esc_FCRTL = value & ~0xFFFF0007;
1580 sc->esc_FCRTH = value & ~0xFFFF0007;
1582 case E1000_RDBAL(0):
1583 sc->esc_RDBAL = value & ~0xF;
1584 if (sc->esc_rx_enabled) {
1585 /* Apparently legal: update cached address */
1586 e82545_rx_update_rdba(sc);
1589 case E1000_RDBAH(0):
1590 assert(!sc->esc_rx_enabled);
1591 sc->esc_RDBAH = value;
1593 case E1000_RDLEN(0):
1594 assert(!sc->esc_rx_enabled);
1595 sc->esc_RDLEN = value & ~0xFFF0007F;
1598 /* XXX should only ever be zero ? Range check ? */
1599 sc->esc_RDH = value;
1602 /* XXX if this opens up the rx ring, do something ? */
1603 sc->esc_RDT = value;
1606 /* ignore FPD bit 31 */
1607 sc->esc_RDTR = value & ~0xFFFF0000;
1609 case E1000_RXDCTL(0):
1610 sc->esc_RXDCTL = value & ~0xFEC0C0C0;
1613 sc->esc_RADV = value & ~0xFFFF0000;
1616 sc->esc_RSRPD = value & ~0xFFFFF000;
1619 sc->esc_RXCSUM = value & ~0xFFFFF800;
1622 sc->esc_TXCW = value & ~0x3FFF0000;
1625 e82545_tx_ctl(sc, value);
1628 sc->esc_TIPG = value;
1631 sc->esc_AIT = value;
1633 case E1000_TDBAL(0):
1634 sc->esc_TDBAL = value & ~0xF;
1635 if (sc->esc_tx_enabled) {
1636 /* Apparently legal */
1637 e82545_tx_update_tdba(sc);
1640 case E1000_TDBAH(0):
1641 //assert(!sc->esc_tx_enabled);
1642 sc->esc_TDBAH = value;
1644 case E1000_TDLEN(0):
1645 //assert(!sc->esc_tx_enabled);
1646 sc->esc_TDLEN = value & ~0xFFF0007F;
1649 //assert(!sc->esc_tx_enabled);
1650 /* XXX should only ever be zero ? Range check ? */
1651 sc->esc_TDHr = sc->esc_TDH = value;
1654 /* XXX range check ? */
1655 sc->esc_TDT = value;
1656 if (sc->esc_tx_enabled)
1657 e82545_tx_start(sc);
1660 sc->esc_TIDV = value & ~0xFFFF0000;
1662 case E1000_TXDCTL(0):
1663 //assert(!sc->esc_tx_enabled);
1664 sc->esc_TXDCTL = value & ~0xC0C0C0;
1667 sc->esc_TADV = value & ~0xFFFF0000;
1669 case E1000_RAL(0) ... E1000_RAH(15):
1670 /* convert to u32 offset */
1671 ridx = (offset - E1000_RAL(0)) >> 2;
1672 e82545_write_ra(sc, ridx, value);
1674 case E1000_MTA ... (E1000_MTA + (127*4)):
1675 sc->esc_fmcast[(offset - E1000_MTA) >> 2] = value;
1677 case E1000_VFTA ... (E1000_VFTA + (127*4)):
1678 sc->esc_fvlan[(offset - E1000_VFTA) >> 2] = value;
1682 //DPRINTF("EECD write 0x%x -> 0x%x\r\n", sc->eeprom_control, value);
1683 /* edge triggered low->high */
1684 uint32_t eecd_strobe = ((sc->eeprom_control & E1000_EECD_SK) ?
1685 0 : (value & E1000_EECD_SK));
1686 uint32_t eecd_mask = (E1000_EECD_SK|E1000_EECD_CS|
1687 E1000_EECD_DI|E1000_EECD_REQ);
1688 sc->eeprom_control &= ~eecd_mask;
1689 sc->eeprom_control |= (value & eecd_mask);
1690 /* grant/revoke immediately */
1691 if (value & E1000_EECD_REQ) {
1692 sc->eeprom_control |= E1000_EECD_GNT;
1694 sc->eeprom_control &= ~E1000_EECD_GNT;
1696 if (eecd_strobe && (sc->eeprom_control & E1000_EECD_CS)) {
1697 e82545_eecd_strobe(sc);
1703 uint8_t reg_addr = (uint8_t)((value & E1000_MDIC_REG_MASK) >>
1704 E1000_MDIC_REG_SHIFT);
1705 uint8_t phy_addr = (uint8_t)((value & E1000_MDIC_PHY_MASK) >>
1706 E1000_MDIC_PHY_SHIFT);
1708 (value & ~(E1000_MDIC_ERROR|E1000_MDIC_DEST));
1709 if ((value & E1000_MDIC_READY) != 0) {
1710 DPRINTF("Incorrect MDIC ready bit: 0x%x\r\n", value);
1713 switch (value & E82545_MDIC_OP_MASK) {
1714 case E1000_MDIC_OP_READ:
1715 sc->mdi_control &= ~E82545_MDIC_DATA_MASK;
1716 sc->mdi_control |= e82545_read_mdi(sc, reg_addr, phy_addr);
1718 case E1000_MDIC_OP_WRITE:
1719 e82545_write_mdi(sc, reg_addr, phy_addr,
1720 value & E82545_MDIC_DATA_MASK);
1723 DPRINTF("Unknown MDIC op: 0x%x\r\n", value);
1726 /* TODO: barrier? */
1727 sc->mdi_control |= E1000_MDIC_READY;
1728 if (value & E82545_MDIC_IE) {
1729 // TODO: generate interrupt
1737 DPRINTF("Unknown write register: 0x%x value:%x\r\n", offset, value);
1743 e82545_read_register(struct e82545_softc *sc, uint32_t offset)
1749 DPRINTF("Unaligned register read offset:0x%x\r\n", offset);
1753 DPRINTF("Register read: 0x%x\r\n", offset);
1757 retval = sc->esc_CTRL;
1760 retval = E1000_STATUS_FD | E1000_STATUS_LU |
1761 E1000_STATUS_SPEED_1000;
1764 retval = sc->esc_FCAL;
1767 retval = sc->esc_FCAH;
1770 retval = sc->esc_FCT;
1773 retval = sc->esc_VET;
1776 retval = sc->esc_FCTTV;
1779 retval = sc->esc_LEDCTL;
1782 retval = sc->esc_PBA;
1789 retval = e82545_intr_read(sc, offset);
1792 retval = sc->esc_RCTL;
1795 retval = sc->esc_FCRTL;
1798 retval = sc->esc_FCRTH;
1800 case E1000_RDBAL(0):
1801 retval = sc->esc_RDBAL;
1803 case E1000_RDBAH(0):
1804 retval = sc->esc_RDBAH;
1806 case E1000_RDLEN(0):
1807 retval = sc->esc_RDLEN;
1810 retval = sc->esc_RDH;
1813 retval = sc->esc_RDT;
1816 retval = sc->esc_RDTR;
1818 case E1000_RXDCTL(0):
1819 retval = sc->esc_RXDCTL;
1822 retval = sc->esc_RADV;
1825 retval = sc->esc_RSRPD;
1828 retval = sc->esc_RXCSUM;
1831 retval = sc->esc_TXCW;
1834 retval = sc->esc_TCTL;
1837 retval = sc->esc_TIPG;
1840 retval = sc->esc_AIT;
1842 case E1000_TDBAL(0):
1843 retval = sc->esc_TDBAL;
1845 case E1000_TDBAH(0):
1846 retval = sc->esc_TDBAH;
1848 case E1000_TDLEN(0):
1849 retval = sc->esc_TDLEN;
1852 retval = sc->esc_TDH;
1855 retval = sc->esc_TDT;
1858 retval = sc->esc_TIDV;
1860 case E1000_TXDCTL(0):
1861 retval = sc->esc_TXDCTL;
1864 retval = sc->esc_TADV;
1866 case E1000_RAL(0) ... E1000_RAH(15):
1867 /* convert to u32 offset */
1868 ridx = (offset - E1000_RAL(0)) >> 2;
1869 retval = e82545_read_ra(sc, ridx);
1871 case E1000_MTA ... (E1000_MTA + (127*4)):
1872 retval = sc->esc_fmcast[(offset - E1000_MTA) >> 2];
1874 case E1000_VFTA ... (E1000_VFTA + (127*4)):
1875 retval = sc->esc_fvlan[(offset - E1000_VFTA) >> 2];
1878 //DPRINTF("EECD read %x\r\n", sc->eeprom_control);
1879 retval = sc->eeprom_control;
1882 retval = sc->mdi_control;
1887 /* stats that we emulate. */
1889 retval = sc->missed_pkt_count;
1892 retval = sc->pkt_rx_by_size[0];
1895 retval = sc->pkt_rx_by_size[1];
1898 retval = sc->pkt_rx_by_size[2];
1901 retval = sc->pkt_rx_by_size[3];
1904 retval = sc->pkt_rx_by_size[4];
1907 retval = sc->pkt_rx_by_size[5];
1910 retval = sc->good_pkt_rx_count;
1913 retval = sc->bcast_pkt_rx_count;
1916 retval = sc->mcast_pkt_rx_count;
1920 retval = sc->good_pkt_tx_count;
1923 retval = (uint32_t)sc->good_octets_rx;
1926 retval = (uint32_t)(sc->good_octets_rx >> 32);
1930 retval = (uint32_t)sc->good_octets_tx;
1934 retval = (uint32_t)(sc->good_octets_tx >> 32);
1937 retval = sc->oversize_rx_count;
1940 retval = (uint32_t)(sc->good_octets_rx + sc->missed_octets);
1943 retval = (uint32_t)((sc->good_octets_rx +
1944 sc->missed_octets) >> 32);
1947 retval = sc->good_pkt_rx_count + sc->missed_pkt_count +
1948 sc->oversize_rx_count;
1951 retval = sc->pkt_tx_by_size[0];
1954 retval = sc->pkt_tx_by_size[1];
1957 retval = sc->pkt_tx_by_size[2];
1960 retval = sc->pkt_tx_by_size[3];
1963 retval = sc->pkt_tx_by_size[4];
1966 retval = sc->pkt_tx_by_size[5];
1969 retval = sc->mcast_pkt_tx_count;
1972 retval = sc->bcast_pkt_tx_count;
1975 retval = sc->tso_tx_count;
1977 /* stats that are always 0. */
1979 case E1000_ALGNERRC:
2008 DPRINTF("Unknown read register: 0x%x\r\n", offset);
2017 e82545_write(struct vmctx *ctx, int vcpu, struct pci_devinst *pi, int baridx,
2018 uint64_t offset, int size, uint64_t value)
2020 struct e82545_softc *sc;
2022 //DPRINTF("Write bar:%d offset:0x%lx value:0x%lx size:%d\r\n", baridx, offset, value, size);
2026 pthread_mutex_lock(&sc->esc_mtx);
2033 DPRINTF("Wrong io addr write sz:%d value:0x%lx\r\n", size, value);
2035 sc->io_addr = (uint32_t)value;
2039 DPRINTF("Wrong io data write size:%d value:0x%lx\r\n", size, value);
2040 } else if (sc->io_addr > E82545_IO_REGISTER_MAX) {
2041 DPRINTF("Non-register io write addr:0x%x value:0x%lx\r\n", sc->io_addr, value);
2043 e82545_write_register(sc, sc->io_addr,
2047 DPRINTF("Unknown io bar write offset:0x%lx value:0x%lx size:%d\r\n", offset, value, size);
2051 case E82545_BAR_REGISTER:
2053 DPRINTF("Wrong register write size:%d offset:0x%lx value:0x%lx\r\n", size, offset, value);
2055 e82545_write_register(sc, (uint32_t)offset,
2059 DPRINTF("Unknown write bar:%d off:0x%lx val:0x%lx size:%d\r\n",
2060 baridx, offset, value, size);
2063 pthread_mutex_unlock(&sc->esc_mtx);
2067 e82545_read(struct vmctx *ctx, int vcpu, struct pci_devinst *pi, int baridx,
2068 uint64_t offset, int size)
2070 struct e82545_softc *sc;
2073 //DPRINTF("Read bar:%d offset:0x%lx size:%d\r\n", baridx, offset, size);
2077 pthread_mutex_lock(&sc->esc_mtx);
2084 DPRINTF("Wrong io addr read sz:%d\r\n", size);
2086 retval = sc->io_addr;
2090 DPRINTF("Wrong io data read sz:%d\r\n", size);
2092 if (sc->io_addr > E82545_IO_REGISTER_MAX) {
2093 DPRINTF("Non-register io read addr:0x%x\r\n",
2096 retval = e82545_read_register(sc, sc->io_addr);
2099 DPRINTF("Unknown io bar read offset:0x%lx size:%d\r\n",
2104 case E82545_BAR_REGISTER:
2106 DPRINTF("Wrong register read size:%d offset:0x%lx\r\n",
2109 retval = e82545_read_register(sc, (uint32_t)offset);
2112 DPRINTF("Unknown read bar:%d offset:0x%lx size:%d\r\n",
2113 baridx, offset, size);
2117 pthread_mutex_unlock(&sc->esc_mtx);
2123 e82545_reset(struct e82545_softc *sc, int drvr)
2127 e82545_rx_disable(sc);
2128 e82545_tx_disable(sc);
2130 /* clear outstanding interrupts */
2131 if (sc->esc_irq_asserted)
2132 pci_lintr_deassert(sc->esc_pi);
2142 sc->esc_LEDCTL = 0x07061302;
2143 sc->esc_PBA = 0x00100030;
2145 /* start nvm in opcode mode. */
2147 sc->nvm_mode = E82545_NVM_MODE_OPADDR;
2148 sc->nvm_bits = E82545_NVM_OPADDR_BITS;
2149 sc->eeprom_control = E1000_EECD_PRES | E82545_EECD_FWE_EN;
2150 e82545_init_eeprom(sc);
2161 memset(sc->esc_fvlan, 0, sizeof(sc->esc_fvlan));
2162 memset(sc->esc_fmcast, 0, sizeof(sc->esc_fmcast));
2163 memset(sc->esc_uni, 0, sizeof(sc->esc_uni));
2165 /* XXX not necessary on 82545 ?? */
2166 sc->esc_uni[0].eu_valid = 1;
2167 memcpy(sc->esc_uni[0].eu_eth.octet, sc->esc_mac.octet,
2170 /* Clear RAH valid bits */
2171 for (i = 0; i < 16; i++)
2172 sc->esc_uni[i].eu_valid = 0;
2187 sc->esc_RXDCTL = (1 << 24) | (1 << 16); /* default GRAN/WTHRESH */
2201 sc->esc_txdesc = NULL;
2206 sc->esc_TDHr = sc->esc_TDH = 0;
2211 e82545_init(struct vmctx *ctx, struct pci_devinst *pi, char *opts)
2214 struct e82545_softc *sc;
2219 DPRINTF("Loading with options: %s\r\n", opts);
2221 /* Setup our softc */
2222 sc = calloc(1, sizeof(*sc));
2228 pthread_mutex_init(&sc->esc_mtx, NULL);
2229 pthread_cond_init(&sc->esc_rx_cond, NULL);
2230 pthread_cond_init(&sc->esc_tx_cond, NULL);
2231 pthread_create(&sc->esc_tx_tid, NULL, e82545_tx_thread, sc);
2232 snprintf(nstr, sizeof(nstr), "e82545-%d:%d tx", pi->pi_slot,
2234 pthread_set_name_np(sc->esc_tx_tid, nstr);
2236 pci_set_cfgdata16(pi, PCIR_DEVICE, E82545_DEV_ID_82545EM_COPPER);
2237 pci_set_cfgdata16(pi, PCIR_VENDOR, E82545_VENDOR_ID_INTEL);
2238 pci_set_cfgdata8(pi, PCIR_CLASS, PCIC_NETWORK);
2239 pci_set_cfgdata8(pi, PCIR_SUBCLASS, PCIS_NETWORK_ETHERNET);
2240 pci_set_cfgdata16(pi, PCIR_SUBDEV_0, E82545_SUBDEV_ID);
2241 pci_set_cfgdata16(pi, PCIR_SUBVEND_0, E82545_VENDOR_ID_INTEL);
2243 pci_set_cfgdata8(pi, PCIR_HDRTYPE, PCIM_HDRTYPE_NORMAL);
2244 pci_set_cfgdata8(pi, PCIR_INTPIN, 0x1);
2246 /* TODO: this card also supports msi, but the freebsd driver for it
2247 * does not, so I have not implemented it. */
2248 pci_lintr_request(pi);
2250 pci_emul_alloc_bar(pi, E82545_BAR_REGISTER, PCIBAR_MEM32,
2251 E82545_BAR_REGISTER_LEN);
2252 pci_emul_alloc_bar(pi, E82545_BAR_FLASH, PCIBAR_MEM32,
2253 E82545_BAR_FLASH_LEN);
2254 pci_emul_alloc_bar(pi, E82545_BAR_IO, PCIBAR_IO,
2258 * Attempt to open the net backend and read the MAC address
2259 * if specified. Copied from virtio-net, slightly modified.
2266 devname = vtopts = strdup(opts);
2267 (void) strsep(&vtopts, ",");
2269 if (vtopts != NULL) {
2270 err = net_parsemac(vtopts, sc->esc_mac.octet);
2278 err = netbe_init(&sc->esc_be, devname, e82545_rx_callback, sc);
2284 if (!mac_provided) {
2285 net_genmac(pi, sc->esc_mac.octet);
2288 /* H/w initiated reset */
2289 e82545_reset(sc, 0);
2294 struct pci_devemu pci_de_e82545 = {
2296 .pe_init = e82545_init,
2297 .pe_barwrite = e82545_write,
2298 .pe_barread = e82545_read
2300 PCI_EMUL_SET(pci_de_e82545);