2 * SMSC LAN9118 Ethernet interface emulation
4 * Copyright (c) 2009 CodeSourcery, LLC.
5 * Written by Paul Brook
7 * This code is licensed under the GNU GPL v2
9 * Contributions after 2012-01-13 are licensed under the terms of the
10 * GNU GPL, version 2 or (at your option) any later version.
13 #include "qemu/osdep.h"
14 #include "hw/sysbus.h"
15 #include "migration/vmstate.h"
20 #include "hw/net/lan9118.h"
21 #include "hw/ptimer.h"
22 #include "hw/qdev-properties.h"
24 #include "qemu/module.h"
28 //#define DEBUG_LAN9118
31 #define DPRINTF(fmt, ...) \
32 do { printf("lan9118: " fmt , ## __VA_ARGS__); } while (0)
33 #define BADF(fmt, ...) \
34 do { hw_error("lan9118: error: " fmt , ## __VA_ARGS__);} while (0)
36 #define DPRINTF(fmt, ...) do {} while(0)
37 #define BADF(fmt, ...) \
38 do { fprintf(stderr, "lan9118: error: " fmt , ## __VA_ARGS__);} while (0)
41 #define CSR_ID_REV 0x50
42 #define CSR_IRQ_CFG 0x54
43 #define CSR_INT_STS 0x58
44 #define CSR_INT_EN 0x5c
45 #define CSR_BYTE_TEST 0x64
46 #define CSR_FIFO_INT 0x68
47 #define CSR_RX_CFG 0x6c
48 #define CSR_TX_CFG 0x70
49 #define CSR_HW_CFG 0x74
50 #define CSR_RX_DP_CTRL 0x78
51 #define CSR_RX_FIFO_INF 0x7c
52 #define CSR_TX_FIFO_INF 0x80
53 #define CSR_PMT_CTRL 0x84
54 #define CSR_GPIO_CFG 0x88
55 #define CSR_GPT_CFG 0x8c
56 #define CSR_GPT_CNT 0x90
57 #define CSR_WORD_SWAP 0x98
58 #define CSR_FREE_RUN 0x9c
59 #define CSR_RX_DROP 0xa0
60 #define CSR_MAC_CSR_CMD 0xa4
61 #define CSR_MAC_CSR_DATA 0xa8
62 #define CSR_AFC_CFG 0xac
63 #define CSR_E2P_CMD 0xb0
64 #define CSR_E2P_DATA 0xb4
66 #define E2P_CMD_MAC_ADDR_LOADED 0x100
69 #define IRQ_INT 0x00001000
70 #define IRQ_EN 0x00000100
71 #define IRQ_POL 0x00000010
72 #define IRQ_TYPE 0x00000001
75 #define SW_INT 0x80000000
76 #define TXSTOP_INT 0x02000000
77 #define RXSTOP_INT 0x01000000
78 #define RXDFH_INT 0x00800000
79 #define TX_IOC_INT 0x00200000
80 #define RXD_INT 0x00100000
81 #define GPT_INT 0x00080000
82 #define PHY_INT 0x00040000
83 #define PME_INT 0x00020000
84 #define TXSO_INT 0x00010000
85 #define RWT_INT 0x00008000
86 #define RXE_INT 0x00004000
87 #define TXE_INT 0x00002000
88 #define TDFU_INT 0x00000800
89 #define TDFO_INT 0x00000400
90 #define TDFA_INT 0x00000200
91 #define TSFF_INT 0x00000100
92 #define TSFL_INT 0x00000080
93 #define RXDF_INT 0x00000040
94 #define RDFL_INT 0x00000020
95 #define RSFF_INT 0x00000010
96 #define RSFL_INT 0x00000008
97 #define GPIO2_INT 0x00000004
98 #define GPIO1_INT 0x00000002
99 #define GPIO0_INT 0x00000001
100 #define RESERVED_INT 0x7c001000
107 #define MAC_MII_ACC 6
108 #define MAC_MII_DATA 7
110 #define MAC_VLAN1 9 /* TODO */
111 #define MAC_VLAN2 10 /* TODO */
112 #define MAC_WUFF 11 /* TODO */
113 #define MAC_WUCSR 12 /* TODO */
115 #define MAC_CR_RXALL 0x80000000
116 #define MAC_CR_RCVOWN 0x00800000
117 #define MAC_CR_LOOPBK 0x00200000
118 #define MAC_CR_FDPX 0x00100000
119 #define MAC_CR_MCPAS 0x00080000
120 #define MAC_CR_PRMS 0x00040000
121 #define MAC_CR_INVFILT 0x00020000
122 #define MAC_CR_PASSBAD 0x00010000
123 #define MAC_CR_HO 0x00008000
124 #define MAC_CR_HPFILT 0x00002000
125 #define MAC_CR_LCOLL 0x00001000
126 #define MAC_CR_BCAST 0x00000800
127 #define MAC_CR_DISRTY 0x00000400
128 #define MAC_CR_PADSTR 0x00000100
129 #define MAC_CR_BOLMT 0x000000c0
130 #define MAC_CR_DFCHK 0x00000020
131 #define MAC_CR_TXEN 0x00000008
132 #define MAC_CR_RXEN 0x00000004
133 #define MAC_CR_RESERVED 0x7f404213
135 #define PHY_INT_ENERGYON 0x80
136 #define PHY_INT_AUTONEG_COMPLETE 0x40
137 #define PHY_INT_FAULT 0x20
138 #define PHY_INT_DOWN 0x10
139 #define PHY_INT_AUTONEG_LP 0x08
140 #define PHY_INT_PARFAULT 0x04
141 #define PHY_INT_AUTONEG_PAGE 0x02
143 #define GPT_TIMER_EN 0x20000000
152 /* state is a tx_state but we can't put enums in VMStateDescriptions. */
164 static const VMStateDescription vmstate_lan9118_packet
= {
165 .name
= "lan9118_packet",
167 .minimum_version_id
= 1,
168 .fields
= (VMStateField
[]) {
169 VMSTATE_UINT32(state
, LAN9118Packet
),
170 VMSTATE_UINT32(cmd_a
, LAN9118Packet
),
171 VMSTATE_UINT32(cmd_b
, LAN9118Packet
),
172 VMSTATE_INT32(buffer_size
, LAN9118Packet
),
173 VMSTATE_INT32(offset
, LAN9118Packet
),
174 VMSTATE_INT32(pad
, LAN9118Packet
),
175 VMSTATE_INT32(fifo_used
, LAN9118Packet
),
176 VMSTATE_INT32(len
, LAN9118Packet
),
177 VMSTATE_UINT8_ARRAY(data
, LAN9118Packet
, 2048),
178 VMSTATE_END_OF_LIST()
182 #define LAN9118(obj) OBJECT_CHECK(lan9118_state, (obj), TYPE_LAN9118)
185 SysBusDevice parent_obj
;
204 uint32_t free_timer_start
;
214 uint32_t mac_mii_acc
;
215 uint32_t mac_mii_data
;
219 uint32_t phy_control
;
220 uint32_t phy_advertise
;
222 uint32_t phy_int_mask
;
224 int32_t eeprom_writable
;
227 int32_t tx_fifo_size
;
229 LAN9118Packet tx_packet
;
231 int32_t tx_status_fifo_used
;
232 int32_t tx_status_fifo_head
;
233 uint32_t tx_status_fifo
[512];
235 int32_t rx_status_fifo_size
;
236 int32_t rx_status_fifo_used
;
237 int32_t rx_status_fifo_head
;
238 uint32_t rx_status_fifo
[896];
239 int32_t rx_fifo_size
;
240 int32_t rx_fifo_used
;
241 int32_t rx_fifo_head
;
242 uint32_t rx_fifo
[3360];
243 int32_t rx_packet_size_head
;
244 int32_t rx_packet_size_tail
;
245 int32_t rx_packet_size
[1024];
251 uint32_t write_word_prev_offset
;
252 uint32_t write_word_n
;
253 uint16_t write_word_l
;
254 uint16_t write_word_h
;
255 uint32_t read_word_prev_offset
;
256 uint32_t read_word_n
;
262 static const VMStateDescription vmstate_lan9118
= {
265 .minimum_version_id
= 1,
266 .fields
= (VMStateField
[]) {
267 VMSTATE_PTIMER(timer
, lan9118_state
),
268 VMSTATE_UINT32(irq_cfg
, lan9118_state
),
269 VMSTATE_UINT32(int_sts
, lan9118_state
),
270 VMSTATE_UINT32(int_en
, lan9118_state
),
271 VMSTATE_UINT32(fifo_int
, lan9118_state
),
272 VMSTATE_UINT32(rx_cfg
, lan9118_state
),
273 VMSTATE_UINT32(tx_cfg
, lan9118_state
),
274 VMSTATE_UINT32(hw_cfg
, lan9118_state
),
275 VMSTATE_UINT32(pmt_ctrl
, lan9118_state
),
276 VMSTATE_UINT32(gpio_cfg
, lan9118_state
),
277 VMSTATE_UINT32(gpt_cfg
, lan9118_state
),
278 VMSTATE_UINT32(word_swap
, lan9118_state
),
279 VMSTATE_UINT32(free_timer_start
, lan9118_state
),
280 VMSTATE_UINT32(mac_cmd
, lan9118_state
),
281 VMSTATE_UINT32(mac_data
, lan9118_state
),
282 VMSTATE_UINT32(afc_cfg
, lan9118_state
),
283 VMSTATE_UINT32(e2p_cmd
, lan9118_state
),
284 VMSTATE_UINT32(e2p_data
, lan9118_state
),
285 VMSTATE_UINT32(mac_cr
, lan9118_state
),
286 VMSTATE_UINT32(mac_hashh
, lan9118_state
),
287 VMSTATE_UINT32(mac_hashl
, lan9118_state
),
288 VMSTATE_UINT32(mac_mii_acc
, lan9118_state
),
289 VMSTATE_UINT32(mac_mii_data
, lan9118_state
),
290 VMSTATE_UINT32(mac_flow
, lan9118_state
),
291 VMSTATE_UINT32(phy_status
, lan9118_state
),
292 VMSTATE_UINT32(phy_control
, lan9118_state
),
293 VMSTATE_UINT32(phy_advertise
, lan9118_state
),
294 VMSTATE_UINT32(phy_int
, lan9118_state
),
295 VMSTATE_UINT32(phy_int_mask
, lan9118_state
),
296 VMSTATE_INT32(eeprom_writable
, lan9118_state
),
297 VMSTATE_UINT8_ARRAY(eeprom
, lan9118_state
, 128),
298 VMSTATE_INT32(tx_fifo_size
, lan9118_state
),
299 /* txp always points at tx_packet so need not be saved */
300 VMSTATE_STRUCT(tx_packet
, lan9118_state
, 0,
301 vmstate_lan9118_packet
, LAN9118Packet
),
302 VMSTATE_INT32(tx_status_fifo_used
, lan9118_state
),
303 VMSTATE_INT32(tx_status_fifo_head
, lan9118_state
),
304 VMSTATE_UINT32_ARRAY(tx_status_fifo
, lan9118_state
, 512),
305 VMSTATE_INT32(rx_status_fifo_size
, lan9118_state
),
306 VMSTATE_INT32(rx_status_fifo_used
, lan9118_state
),
307 VMSTATE_INT32(rx_status_fifo_head
, lan9118_state
),
308 VMSTATE_UINT32_ARRAY(rx_status_fifo
, lan9118_state
, 896),
309 VMSTATE_INT32(rx_fifo_size
, lan9118_state
),
310 VMSTATE_INT32(rx_fifo_used
, lan9118_state
),
311 VMSTATE_INT32(rx_fifo_head
, lan9118_state
),
312 VMSTATE_UINT32_ARRAY(rx_fifo
, lan9118_state
, 3360),
313 VMSTATE_INT32(rx_packet_size_head
, lan9118_state
),
314 VMSTATE_INT32(rx_packet_size_tail
, lan9118_state
),
315 VMSTATE_INT32_ARRAY(rx_packet_size
, lan9118_state
, 1024),
316 VMSTATE_INT32(rxp_offset
, lan9118_state
),
317 VMSTATE_INT32(rxp_size
, lan9118_state
),
318 VMSTATE_INT32(rxp_pad
, lan9118_state
),
319 VMSTATE_UINT32_V(write_word_prev_offset
, lan9118_state
, 2),
320 VMSTATE_UINT32_V(write_word_n
, lan9118_state
, 2),
321 VMSTATE_UINT16_V(write_word_l
, lan9118_state
, 2),
322 VMSTATE_UINT16_V(write_word_h
, lan9118_state
, 2),
323 VMSTATE_UINT32_V(read_word_prev_offset
, lan9118_state
, 2),
324 VMSTATE_UINT32_V(read_word_n
, lan9118_state
, 2),
325 VMSTATE_UINT32_V(read_long
, lan9118_state
, 2),
326 VMSTATE_UINT32_V(mode_16bit
, lan9118_state
, 2),
327 VMSTATE_END_OF_LIST()
331 static void lan9118_update(lan9118_state
*s
)
335 /* TODO: Implement FIFO level IRQs. */
336 level
= (s
->int_sts
& s
->int_en
) != 0;
338 s
->irq_cfg
|= IRQ_INT
;
340 s
->irq_cfg
&= ~IRQ_INT
;
342 if ((s
->irq_cfg
& IRQ_EN
) == 0) {
345 if ((s
->irq_cfg
& (IRQ_TYPE
| IRQ_POL
)) != (IRQ_TYPE
| IRQ_POL
)) {
346 /* Interrupt is active low unless we're configured as
347 * active-high polarity, push-pull type.
351 qemu_set_irq(s
->irq
, level
);
354 static void lan9118_mac_changed(lan9118_state
*s
)
356 qemu_format_nic_info_str(qemu_get_queue(s
->nic
), s
->conf
.macaddr
.a
);
359 static void lan9118_reload_eeprom(lan9118_state
*s
)
362 if (s
->eeprom
[0] != 0xa5) {
363 s
->e2p_cmd
&= ~E2P_CMD_MAC_ADDR_LOADED
;
364 DPRINTF("MACADDR load failed\n");
367 for (i
= 0; i
< 6; i
++) {
368 s
->conf
.macaddr
.a
[i
] = s
->eeprom
[i
+ 1];
370 s
->e2p_cmd
|= E2P_CMD_MAC_ADDR_LOADED
;
371 DPRINTF("MACADDR loaded from eeprom\n");
372 lan9118_mac_changed(s
);
375 static void phy_update_irq(lan9118_state
*s
)
377 if (s
->phy_int
& s
->phy_int_mask
) {
378 s
->int_sts
|= PHY_INT
;
380 s
->int_sts
&= ~PHY_INT
;
385 static void phy_update_link(lan9118_state
*s
)
387 /* Autonegotiation status mirrors link status. */
388 if (qemu_get_queue(s
->nic
)->link_down
) {
389 s
->phy_status
&= ~0x0024;
390 s
->phy_int
|= PHY_INT_DOWN
;
392 s
->phy_status
|= 0x0024;
393 s
->phy_int
|= PHY_INT_ENERGYON
;
394 s
->phy_int
|= PHY_INT_AUTONEG_COMPLETE
;
399 static void lan9118_set_link(NetClientState
*nc
)
401 phy_update_link(qemu_get_nic_opaque(nc
));
404 static void phy_reset(lan9118_state
*s
)
406 s
->phy_status
= 0x7809;
407 s
->phy_control
= 0x3000;
408 s
->phy_advertise
= 0x01e1;
414 static void lan9118_reset(DeviceState
*d
)
416 lan9118_state
*s
= LAN9118(d
);
418 s
->irq_cfg
&= (IRQ_TYPE
| IRQ_POL
);
421 s
->fifo_int
= 0x48000000;
424 s
->hw_cfg
= s
->mode_16bit
? 0x00050000 : 0x00050004;
427 s
->txp
->fifo_used
= 0;
428 s
->txp
->state
= TX_IDLE
;
429 s
->txp
->cmd_a
= 0xffffffffu
;
430 s
->txp
->cmd_b
= 0xffffffffu
;
432 s
->txp
->fifo_used
= 0;
433 s
->tx_fifo_size
= 4608;
434 s
->tx_status_fifo_used
= 0;
435 s
->rx_status_fifo_size
= 704;
436 s
->rx_fifo_size
= 2640;
438 s
->rx_status_fifo_size
= 176;
439 s
->rx_status_fifo_used
= 0;
443 s
->rx_packet_size_tail
= s
->rx_packet_size_head
;
444 s
->rx_packet_size
[s
->rx_packet_size_head
] = 0;
450 s
->free_timer_start
= qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL
) / 40;
452 ptimer_transaction_begin(s
->timer
);
453 ptimer_stop(s
->timer
);
454 ptimer_set_count(s
->timer
, 0xffff);
455 ptimer_transaction_commit(s
->timer
);
458 s
->mac_cr
= MAC_CR_PRMS
;
470 s
->eeprom_writable
= 0;
471 lan9118_reload_eeprom(s
);
474 static void rx_fifo_push(lan9118_state
*s
, uint32_t val
)
477 fifo_pos
= s
->rx_fifo_head
+ s
->rx_fifo_used
;
478 if (fifo_pos
>= s
->rx_fifo_size
)
479 fifo_pos
-= s
->rx_fifo_size
;
480 s
->rx_fifo
[fifo_pos
] = val
;
484 /* Return nonzero if the packet is accepted by the filter. */
485 static int lan9118_filter(lan9118_state
*s
, const uint8_t *addr
)
490 if (s
->mac_cr
& MAC_CR_PRMS
) {
493 if (addr
[0] == 0xff && addr
[1] == 0xff && addr
[2] == 0xff &&
494 addr
[3] == 0xff && addr
[4] == 0xff && addr
[5] == 0xff) {
495 return (s
->mac_cr
& MAC_CR_BCAST
) == 0;
498 multicast
= addr
[0] & 1;
499 if (multicast
&&s
->mac_cr
& MAC_CR_MCPAS
) {
502 if (multicast
? (s
->mac_cr
& MAC_CR_HPFILT
) == 0
503 : (s
->mac_cr
& MAC_CR_HO
) == 0) {
504 /* Exact matching. */
505 hash
= memcmp(addr
, s
->conf
.macaddr
.a
, 6);
506 if (s
->mac_cr
& MAC_CR_INVFILT
) {
513 hash
= net_crc32(addr
, ETH_ALEN
) >> 26;
515 return (s
->mac_hashh
>> (hash
& 0x1f)) & 1;
517 return (s
->mac_hashl
>> (hash
& 0x1f)) & 1;
522 static ssize_t
lan9118_receive(NetClientState
*nc
, const uint8_t *buf
,
525 lan9118_state
*s
= qemu_get_nic_opaque(nc
);
535 if ((s
->mac_cr
& MAC_CR_RXEN
) == 0) {
539 if (size
>= 2048 || size
< 14) {
543 /* TODO: Implement FIFO overflow notification. */
544 if (s
->rx_status_fifo_used
== s
->rx_status_fifo_size
) {
548 filter
= lan9118_filter(s
, buf
);
549 if (!filter
&& (s
->mac_cr
& MAC_CR_RXALL
) == 0) {
553 offset
= (s
->rx_cfg
>> 8) & 0x1f;
555 fifo_len
= (size
+ n
+ 3) >> 2;
556 /* Add a word for the CRC. */
558 if (s
->rx_fifo_size
- s
->rx_fifo_used
< fifo_len
) {
562 DPRINTF("Got packet len:%d fifo:%d filter:%s\n",
563 (int)size
, fifo_len
, filter
? "pass" : "fail");
565 crc
= bswap32(crc32(~0, buf
, size
));
566 for (src_pos
= 0; src_pos
< size
; src_pos
++) {
567 val
= (val
>> 8) | ((uint32_t)buf
[src_pos
] << 24);
571 rx_fifo_push(s
, val
);
576 val
>>= ((4 - n
) * 8);
577 val
|= crc
<< (n
* 8);
578 rx_fifo_push(s
, val
);
579 val
= crc
>> ((4 - n
) * 8);
580 rx_fifo_push(s
, val
);
582 rx_fifo_push(s
, crc
);
584 n
= s
->rx_status_fifo_head
+ s
->rx_status_fifo_used
;
585 if (n
>= s
->rx_status_fifo_size
) {
586 n
-= s
->rx_status_fifo_size
;
588 s
->rx_packet_size
[s
->rx_packet_size_tail
] = fifo_len
;
589 s
->rx_packet_size_tail
= (s
->rx_packet_size_tail
+ 1023) & 1023;
590 s
->rx_status_fifo_used
++;
592 status
= (size
+ 4) << 16;
593 if (buf
[0] == 0xff && buf
[1] == 0xff && buf
[2] == 0xff &&
594 buf
[3] == 0xff && buf
[4] == 0xff && buf
[5] == 0xff) {
595 status
|= 0x00002000;
596 } else if (buf
[0] & 1) {
597 status
|= 0x00000400;
600 status
|= 0x40000000;
602 s
->rx_status_fifo
[n
] = status
;
604 if (s
->rx_status_fifo_used
> (s
->fifo_int
& 0xff)) {
605 s
->int_sts
|= RSFL_INT
;
612 static uint32_t rx_fifo_pop(lan9118_state
*s
)
617 if (s
->rxp_size
== 0 && s
->rxp_pad
== 0) {
618 s
->rxp_size
= s
->rx_packet_size
[s
->rx_packet_size_head
];
619 s
->rx_packet_size
[s
->rx_packet_size_head
] = 0;
620 if (s
->rxp_size
!= 0) {
621 s
->rx_packet_size_head
= (s
->rx_packet_size_head
+ 1023) & 1023;
622 s
->rxp_offset
= (s
->rx_cfg
>> 10) & 7;
623 n
= s
->rxp_offset
+ s
->rxp_size
;
624 switch (s
->rx_cfg
>> 30) {
636 DPRINTF("Pop packet size:%d offset:%d pad: %d\n",
637 s
->rxp_size
, s
->rxp_offset
, s
->rxp_pad
);
640 if (s
->rxp_offset
> 0) {
643 } else if (s
->rxp_size
> 0) {
645 val
= s
->rx_fifo
[s
->rx_fifo_head
++];
646 if (s
->rx_fifo_head
>= s
->rx_fifo_size
) {
647 s
->rx_fifo_head
-= s
->rx_fifo_size
;
650 } else if (s
->rxp_pad
> 0) {
654 DPRINTF("RX underflow\n");
655 s
->int_sts
|= RXE_INT
;
662 static void do_tx_packet(lan9118_state
*s
)
667 /* FIXME: Honor TX disable, and allow queueing of packets. */
668 if (s
->phy_control
& 0x4000) {
669 /* This assumes the receive routine doesn't touch the VLANClient. */
670 lan9118_receive(qemu_get_queue(s
->nic
), s
->txp
->data
, s
->txp
->len
);
672 qemu_send_packet(qemu_get_queue(s
->nic
), s
->txp
->data
, s
->txp
->len
);
674 s
->txp
->fifo_used
= 0;
676 if (s
->tx_status_fifo_used
== 512) {
677 /* Status FIFO full */
680 /* Add entry to status FIFO. */
681 status
= s
->txp
->cmd_b
& 0xffff0000u
;
682 DPRINTF("Sent packet tag:%04x len %d\n", status
>> 16, s
->txp
->len
);
683 n
= (s
->tx_status_fifo_head
+ s
->tx_status_fifo_used
) & 511;
684 s
->tx_status_fifo
[n
] = status
;
685 s
->tx_status_fifo_used
++;
686 if (s
->tx_status_fifo_used
== 512) {
687 s
->int_sts
|= TSFF_INT
;
688 /* TODO: Stop transmission. */
692 static uint32_t rx_status_fifo_pop(lan9118_state
*s
)
696 val
= s
->rx_status_fifo
[s
->rx_status_fifo_head
];
697 if (s
->rx_status_fifo_used
!= 0) {
698 s
->rx_status_fifo_used
--;
699 s
->rx_status_fifo_head
++;
700 if (s
->rx_status_fifo_head
>= s
->rx_status_fifo_size
) {
701 s
->rx_status_fifo_head
-= s
->rx_status_fifo_size
;
703 /* ??? What value should be returned when the FIFO is empty? */
704 DPRINTF("RX status pop 0x%08x\n", val
);
709 static uint32_t tx_status_fifo_pop(lan9118_state
*s
)
713 val
= s
->tx_status_fifo
[s
->tx_status_fifo_head
];
714 if (s
->tx_status_fifo_used
!= 0) {
715 s
->tx_status_fifo_used
--;
716 s
->tx_status_fifo_head
= (s
->tx_status_fifo_head
+ 1) & 511;
717 /* ??? What value should be returned when the FIFO is empty? */
722 static void tx_fifo_push(lan9118_state
*s
, uint32_t val
)
726 if (s
->txp
->fifo_used
== s
->tx_fifo_size
) {
727 s
->int_sts
|= TDFO_INT
;
730 switch (s
->txp
->state
) {
732 s
->txp
->cmd_a
= val
& 0x831f37ff;
734 s
->txp
->state
= TX_B
;
735 s
->txp
->buffer_size
= extract32(s
->txp
->cmd_a
, 0, 11);
736 s
->txp
->offset
= extract32(s
->txp
->cmd_a
, 16, 5);
739 if (s
->txp
->cmd_a
& 0x2000) {
743 /* End alignment does not include command words. */
744 n
= (s
->txp
->buffer_size
+ s
->txp
->offset
+ 3) >> 2;
745 switch ((n
>> 24) & 3) {
758 DPRINTF("Block len:%d offset:%d pad:%d cmd %08x\n",
759 s
->txp
->buffer_size
, s
->txp
->offset
, s
->txp
->pad
,
761 s
->txp
->state
= TX_DATA
;
764 if (s
->txp
->offset
>= 4) {
768 if (s
->txp
->buffer_size
<= 0 && s
->txp
->pad
!= 0) {
771 n
= MIN(4, s
->txp
->buffer_size
+ s
->txp
->offset
);
772 while (s
->txp
->offset
) {
777 /* Documentation is somewhat unclear on the ordering of bytes
778 in FIFO words. Empirical results show it to be little-endian.
780 /* TODO: FIFO overflow checking. */
782 s
->txp
->data
[s
->txp
->len
] = val
& 0xff;
785 s
->txp
->buffer_size
--;
789 if (s
->txp
->buffer_size
<= 0 && s
->txp
->pad
== 0) {
790 if (s
->txp
->cmd_a
& 0x1000) {
793 if (s
->txp
->cmd_a
& 0x80000000) {
794 s
->int_sts
|= TX_IOC_INT
;
796 s
->txp
->state
= TX_IDLE
;
802 static uint32_t do_phy_read(lan9118_state
*s
, int reg
)
807 case 0: /* Basic Control */
808 return s
->phy_control
;
809 case 1: /* Basic Status */
810 return s
->phy_status
;
815 case 4: /* Auto-neg advertisement */
816 return s
->phy_advertise
;
817 case 5: /* Auto-neg Link Partner Ability */
819 case 6: /* Auto-neg Expansion */
821 /* TODO 17, 18, 27, 29, 30, 31 */
822 case 29: /* Interrupt source. */
827 case 30: /* Interrupt mask */
828 return s
->phy_int_mask
;
830 BADF("PHY read reg %d\n", reg
);
835 static void do_phy_write(lan9118_state
*s
, int reg
, uint32_t val
)
838 case 0: /* Basic Control */
843 s
->phy_control
= val
& 0x7980;
844 /* Complete autonegotiation immediately. */
846 s
->phy_status
|= 0x0020;
849 case 4: /* Auto-neg advertisement */
850 s
->phy_advertise
= (val
& 0x2d7f) | 0x80;
852 /* TODO 17, 18, 27, 31 */
853 case 30: /* Interrupt mask */
854 s
->phy_int_mask
= val
& 0xff;
858 BADF("PHY write reg %d = 0x%04x\n", reg
, val
);
862 static void do_mac_write(lan9118_state
*s
, int reg
, uint32_t val
)
866 if ((s
->mac_cr
& MAC_CR_RXEN
) != 0 && (val
& MAC_CR_RXEN
) == 0) {
867 s
->int_sts
|= RXSTOP_INT
;
869 s
->mac_cr
= val
& ~MAC_CR_RESERVED
;
870 DPRINTF("MAC_CR: %08x\n", val
);
873 s
->conf
.macaddr
.a
[4] = val
& 0xff;
874 s
->conf
.macaddr
.a
[5] = (val
>> 8) & 0xff;
875 lan9118_mac_changed(s
);
878 s
->conf
.macaddr
.a
[0] = val
& 0xff;
879 s
->conf
.macaddr
.a
[1] = (val
>> 8) & 0xff;
880 s
->conf
.macaddr
.a
[2] = (val
>> 16) & 0xff;
881 s
->conf
.macaddr
.a
[3] = (val
>> 24) & 0xff;
882 lan9118_mac_changed(s
);
891 s
->mac_mii_acc
= val
& 0xffc2;
893 DPRINTF("PHY write %d = 0x%04x\n",
894 (val
>> 6) & 0x1f, s
->mac_mii_data
);
895 do_phy_write(s
, (val
>> 6) & 0x1f, s
->mac_mii_data
);
897 s
->mac_mii_data
= do_phy_read(s
, (val
>> 6) & 0x1f);
898 DPRINTF("PHY read %d = 0x%04x\n",
899 (val
>> 6) & 0x1f, s
->mac_mii_data
);
903 s
->mac_mii_data
= val
& 0xffff;
906 s
->mac_flow
= val
& 0xffff0000;
909 /* Writing to this register changes a condition for
910 * FrameTooLong bit in rx_status. Since we do not set
911 * FrameTooLong anyway, just ignore write to this.
915 qemu_log_mask(LOG_GUEST_ERROR
,
916 "lan9118: Unimplemented MAC register write: %d = 0x%x\n",
917 s
->mac_cmd
& 0xf, val
);
921 static uint32_t do_mac_read(lan9118_state
*s
, int reg
)
927 return s
->conf
.macaddr
.a
[4] | (s
->conf
.macaddr
.a
[5] << 8);
929 return s
->conf
.macaddr
.a
[0] | (s
->conf
.macaddr
.a
[1] << 8)
930 | (s
->conf
.macaddr
.a
[2] << 16) | (s
->conf
.macaddr
.a
[3] << 24);
938 return s
->mac_mii_acc
;
940 return s
->mac_mii_data
;
944 qemu_log_mask(LOG_GUEST_ERROR
,
945 "lan9118: Unimplemented MAC register read: %d\n",
951 static void lan9118_eeprom_cmd(lan9118_state
*s
, int cmd
, int addr
)
953 s
->e2p_cmd
= (s
->e2p_cmd
& E2P_CMD_MAC_ADDR_LOADED
) | (cmd
<< 28) | addr
;
956 s
->e2p_data
= s
->eeprom
[addr
];
957 DPRINTF("EEPROM Read %d = 0x%02x\n", addr
, s
->e2p_data
);
960 s
->eeprom_writable
= 0;
961 DPRINTF("EEPROM Write Disable\n");
964 s
->eeprom_writable
= 1;
965 DPRINTF("EEPROM Write Enable\n");
968 if (s
->eeprom_writable
) {
969 s
->eeprom
[addr
] &= s
->e2p_data
;
970 DPRINTF("EEPROM Write %d = 0x%02x\n", addr
, s
->e2p_data
);
972 DPRINTF("EEPROM Write %d (ignored)\n", addr
);
976 if (s
->eeprom_writable
) {
977 for (addr
= 0; addr
< 128; addr
++) {
978 s
->eeprom
[addr
] &= s
->e2p_data
;
980 DPRINTF("EEPROM Write All 0x%02x\n", s
->e2p_data
);
982 DPRINTF("EEPROM Write All (ignored)\n");
986 if (s
->eeprom_writable
) {
987 s
->eeprom
[addr
] = 0xff;
988 DPRINTF("EEPROM Erase %d\n", addr
);
990 DPRINTF("EEPROM Erase %d (ignored)\n", addr
);
994 if (s
->eeprom_writable
) {
995 memset(s
->eeprom
, 0xff, 128);
996 DPRINTF("EEPROM Erase All\n");
998 DPRINTF("EEPROM Erase All (ignored)\n");
1001 case 7: /* RELOAD */
1002 lan9118_reload_eeprom(s
);
1007 static void lan9118_tick(void *opaque
)
1009 lan9118_state
*s
= (lan9118_state
*)opaque
;
1010 if (s
->int_en
& GPT_INT
) {
1011 s
->int_sts
|= GPT_INT
;
1016 static void lan9118_writel(void *opaque
, hwaddr offset
,
1017 uint64_t val
, unsigned size
)
1019 lan9118_state
*s
= (lan9118_state
*)opaque
;
1022 //DPRINTF("Write reg 0x%02x = 0x%08x\n", (int)offset, val);
1023 if (offset
>= 0x20 && offset
< 0x40) {
1025 tx_fifo_push(s
, val
);
1030 /* TODO: Implement interrupt deassertion intervals. */
1031 val
&= (IRQ_EN
| IRQ_POL
| IRQ_TYPE
);
1032 s
->irq_cfg
= (s
->irq_cfg
& IRQ_INT
) | val
;
1038 s
->int_en
= val
& ~RESERVED_INT
;
1039 s
->int_sts
|= val
& SW_INT
;
1042 DPRINTF("FIFO INT levels %08x\n", val
);
1048 s
->rx_fifo_used
= 0;
1049 s
->rx_status_fifo_used
= 0;
1050 s
->rx_packet_size_tail
= s
->rx_packet_size_head
;
1051 s
->rx_packet_size
[s
->rx_packet_size_head
] = 0;
1053 s
->rx_cfg
= val
& 0xcfff1ff0;
1057 s
->tx_status_fifo_used
= 0;
1060 s
->txp
->state
= TX_IDLE
;
1061 s
->txp
->fifo_used
= 0;
1062 s
->txp
->cmd_a
= 0xffffffff;
1064 s
->tx_cfg
= val
& 6;
1069 lan9118_reset(DEVICE(s
));
1071 s
->hw_cfg
= (val
& 0x003f300) | (s
->hw_cfg
& 0x4);
1074 case CSR_RX_DP_CTRL
:
1075 if (val
& 0x80000000) {
1076 /* Skip forward to next packet. */
1079 if (s
->rxp_size
== 0) {
1080 /* Pop a word to start the next packet. */
1085 s
->rx_fifo_head
+= s
->rxp_size
;
1086 if (s
->rx_fifo_head
>= s
->rx_fifo_size
) {
1087 s
->rx_fifo_head
-= s
->rx_fifo_size
;
1095 s
->pmt_ctrl
&= ~0x34e;
1096 s
->pmt_ctrl
|= (val
& 0x34e);
1099 /* Probably just enabling LEDs. */
1100 s
->gpio_cfg
= val
& 0x7777071f;
1103 if ((s
->gpt_cfg
^ val
) & GPT_TIMER_EN
) {
1104 ptimer_transaction_begin(s
->timer
);
1105 if (val
& GPT_TIMER_EN
) {
1106 ptimer_set_count(s
->timer
, val
& 0xffff);
1107 ptimer_run(s
->timer
, 0);
1109 ptimer_stop(s
->timer
);
1110 ptimer_set_count(s
->timer
, 0xffff);
1112 ptimer_transaction_commit(s
->timer
);
1114 s
->gpt_cfg
= val
& (GPT_TIMER_EN
| 0xffff);
1117 /* Ignored because we're in 32-bit mode. */
1120 case CSR_MAC_CSR_CMD
:
1121 s
->mac_cmd
= val
& 0x4000000f;
1122 if (val
& 0x80000000) {
1123 if (val
& 0x40000000) {
1124 s
->mac_data
= do_mac_read(s
, val
& 0xf);
1125 DPRINTF("MAC read %d = 0x%08x\n", val
& 0xf, s
->mac_data
);
1127 DPRINTF("MAC write %d = 0x%08x\n", val
& 0xf, s
->mac_data
);
1128 do_mac_write(s
, val
& 0xf, s
->mac_data
);
1132 case CSR_MAC_CSR_DATA
:
1136 s
->afc_cfg
= val
& 0x00ffffff;
1139 lan9118_eeprom_cmd(s
, (val
>> 28) & 7, val
& 0x7f);
1142 s
->e2p_data
= val
& 0xff;
1146 qemu_log_mask(LOG_GUEST_ERROR
, "lan9118_write: Bad reg 0x%x = %x\n",
1147 (int)offset
, (int)val
);
1153 static void lan9118_writew(void *opaque
, hwaddr offset
,
1156 lan9118_state
*s
= (lan9118_state
*)opaque
;
1159 if (s
->write_word_prev_offset
!= (offset
& ~0x3)) {
1160 /* New offset, reset word counter */
1161 s
->write_word_n
= 0;
1162 s
->write_word_prev_offset
= offset
& ~0x3;
1166 s
->write_word_h
= val
;
1168 s
->write_word_l
= val
;
1171 //DPRINTF("Writew reg 0x%02x = 0x%08x\n", (int)offset, val);
1173 if (s
->write_word_n
== 2) {
1174 s
->write_word_n
= 0;
1175 lan9118_writel(s
, offset
& ~3, s
->write_word_l
+
1176 (s
->write_word_h
<< 16), 4);
1180 static void lan9118_16bit_mode_write(void *opaque
, hwaddr offset
,
1181 uint64_t val
, unsigned size
)
1185 lan9118_writew(opaque
, offset
, (uint32_t)val
);
1188 lan9118_writel(opaque
, offset
, val
, size
);
1192 hw_error("lan9118_write: Bad size 0x%x\n", size
);
1195 static uint64_t lan9118_readl(void *opaque
, hwaddr offset
,
1198 lan9118_state
*s
= (lan9118_state
*)opaque
;
1200 //DPRINTF("Read reg 0x%02x\n", (int)offset);
1201 if (offset
< 0x20) {
1203 return rx_fifo_pop(s
);
1207 return rx_status_fifo_pop(s
);
1209 return s
->rx_status_fifo
[s
->tx_status_fifo_head
];
1211 return tx_status_fifo_pop(s
);
1213 return s
->tx_status_fifo
[s
->tx_status_fifo_head
];
1232 case CSR_RX_DP_CTRL
:
1234 case CSR_RX_FIFO_INF
:
1235 return (s
->rx_status_fifo_used
<< 16) | (s
->rx_fifo_used
<< 2);
1236 case CSR_TX_FIFO_INF
:
1237 return (s
->tx_status_fifo_used
<< 16)
1238 | (s
->tx_fifo_size
- s
->txp
->fifo_used
);
1246 return ptimer_get_count(s
->timer
);
1248 return s
->word_swap
;
1250 return (qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL
) / 40) - s
->free_timer_start
;
1252 /* TODO: Implement dropped frames counter. */
1254 case CSR_MAC_CSR_CMD
:
1256 case CSR_MAC_CSR_DATA
:
1265 qemu_log_mask(LOG_GUEST_ERROR
, "lan9118_read: Bad reg 0x%x\n", (int)offset
);
1269 static uint32_t lan9118_readw(void *opaque
, hwaddr offset
)
1271 lan9118_state
*s
= (lan9118_state
*)opaque
;
1274 if (s
->read_word_prev_offset
!= (offset
& ~0x3)) {
1275 /* New offset, reset word counter */
1277 s
->read_word_prev_offset
= offset
& ~0x3;
1281 if (s
->read_word_n
== 1) {
1282 s
->read_long
= lan9118_readl(s
, offset
& ~3, 4);
1288 val
= s
->read_long
>> 16;
1290 val
= s
->read_long
& 0xFFFF;
1293 //DPRINTF("Readw reg 0x%02x, val 0x%x\n", (int)offset, val);
1297 static uint64_t lan9118_16bit_mode_read(void *opaque
, hwaddr offset
,
1302 return lan9118_readw(opaque
, offset
);
1304 return lan9118_readl(opaque
, offset
, size
);
1307 hw_error("lan9118_read: Bad size 0x%x\n", size
);
1311 static const MemoryRegionOps lan9118_mem_ops
= {
1312 .read
= lan9118_readl
,
1313 .write
= lan9118_writel
,
1314 .endianness
= DEVICE_NATIVE_ENDIAN
,
1317 static const MemoryRegionOps lan9118_16bit_mem_ops
= {
1318 .read
= lan9118_16bit_mode_read
,
1319 .write
= lan9118_16bit_mode_write
,
1320 .endianness
= DEVICE_NATIVE_ENDIAN
,
1323 static NetClientInfo net_lan9118_info
= {
1324 .type
= NET_CLIENT_DRIVER_NIC
,
1325 .size
= sizeof(NICState
),
1326 .receive
= lan9118_receive
,
1327 .link_status_changed
= lan9118_set_link
,
1330 static void lan9118_realize(DeviceState
*dev
, Error
**errp
)
1332 SysBusDevice
*sbd
= SYS_BUS_DEVICE(dev
);
1333 lan9118_state
*s
= LAN9118(dev
);
1335 const MemoryRegionOps
*mem_ops
=
1336 s
->mode_16bit
? &lan9118_16bit_mem_ops
: &lan9118_mem_ops
;
1338 memory_region_init_io(&s
->mmio
, OBJECT(dev
), mem_ops
, s
,
1339 "lan9118-mmio", 0x100);
1340 sysbus_init_mmio(sbd
, &s
->mmio
);
1341 sysbus_init_irq(sbd
, &s
->irq
);
1342 qemu_macaddr_default_if_unset(&s
->conf
.macaddr
);
1344 s
->nic
= qemu_new_nic(&net_lan9118_info
, &s
->conf
,
1345 object_get_typename(OBJECT(dev
)), dev
->id
, s
);
1346 qemu_format_nic_info_str(qemu_get_queue(s
->nic
), s
->conf
.macaddr
.a
);
1347 s
->eeprom
[0] = 0xa5;
1348 for (i
= 0; i
< 6; i
++) {
1349 s
->eeprom
[i
+ 1] = s
->conf
.macaddr
.a
[i
];
1352 s
->txp
= &s
->tx_packet
;
1354 s
->timer
= ptimer_init(lan9118_tick
, s
, PTIMER_POLICY_DEFAULT
);
1355 ptimer_transaction_begin(s
->timer
);
1356 ptimer_set_freq(s
->timer
, 10000);
1357 ptimer_set_limit(s
->timer
, 0xffff, 1);
1358 ptimer_transaction_commit(s
->timer
);
1361 static Property lan9118_properties
[] = {
1362 DEFINE_NIC_PROPERTIES(lan9118_state
, conf
),
1363 DEFINE_PROP_UINT32("mode_16bit", lan9118_state
, mode_16bit
, 0),
1364 DEFINE_PROP_END_OF_LIST(),
1367 static void lan9118_class_init(ObjectClass
*klass
, void *data
)
1369 DeviceClass
*dc
= DEVICE_CLASS(klass
);
1371 dc
->reset
= lan9118_reset
;
1372 dc
->props
= lan9118_properties
;
1373 dc
->vmsd
= &vmstate_lan9118
;
1374 dc
->realize
= lan9118_realize
;
1377 static const TypeInfo lan9118_info
= {
1378 .name
= TYPE_LAN9118
,
1379 .parent
= TYPE_SYS_BUS_DEVICE
,
1380 .instance_size
= sizeof(lan9118_state
),
1381 .class_init
= lan9118_class_init
,
1384 static void lan9118_register_types(void)
1386 type_register_static(&lan9118_info
);
1389 /* Legacy helper function. Should go away when machine config files are
1391 void lan9118_init(NICInfo
*nd
, uint32_t base
, qemu_irq irq
)
1396 qemu_check_nic_model(nd
, "lan9118");
1397 dev
= qdev_create(NULL
, TYPE_LAN9118
);
1398 qdev_set_nic_properties(dev
, nd
);
1399 qdev_init_nofail(dev
);
1400 s
= SYS_BUS_DEVICE(dev
);
1401 sysbus_mmio_map(s
, 0, base
);
1402 sysbus_connect_irq(s
, 0, irq
);
1405 type_init(lan9118_register_types
)