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block: m25p80: Improve 1GiB Micron flash definition
[qemu.git] / hw / net / vmxnet3.c
blob92f6af9620f17af9f26520d18c50896ac9eaa546
1 /*
2 * QEMU VMWARE VMXNET3 paravirtual NIC
3 *
4 * Copyright (c) 2012 Ravello Systems LTD (http://ravellosystems.com)
5 *
6 * Developed by Daynix Computing LTD (http://www.daynix.com)
7 *
8 * Authors:
9 * Dmitry Fleytman <dmitry@daynix.com>
10 * Tamir Shomer <tamirs@daynix.com>
11 * Yan Vugenfirer <yan@daynix.com>
12 *
13 * This work is licensed under the terms of the GNU GPL, version 2.
14 * See the COPYING file in the top-level directory.
15 *
16 */
17
18 #include "qemu/osdep.h"
19 #include "hw/hw.h"
20 #include "hw/pci/pci.h"
21 #include "net/net.h"
22 #include "net/tap.h"
23 #include "net/checksum.h"
24 #include "sysemu/sysemu.h"
25 #include "qemu-common.h"
26 #include "qemu/bswap.h"
27 #include "hw/pci/msix.h"
28 #include "hw/pci/msi.h"
29
30 #include "vmxnet3.h"
31 #include "vmxnet_debug.h"
32 #include "vmware_utils.h"
33 #include "net_tx_pkt.h"
34 #include "net_rx_pkt.h"
35
36 #define PCI_DEVICE_ID_VMWARE_VMXNET3_REVISION 0x1
37 #define VMXNET3_MSIX_BAR_SIZE 0x2000
38 #define MIN_BUF_SIZE 60
39
40 /* Compatibility flags for migration */
41 #define VMXNET3_COMPAT_FLAG_OLD_MSI_OFFSETS_BIT 0
42 #define VMXNET3_COMPAT_FLAG_OLD_MSI_OFFSETS \
43 (1 << VMXNET3_COMPAT_FLAG_OLD_MSI_OFFSETS_BIT)
44 #define VMXNET3_COMPAT_FLAG_DISABLE_PCIE_BIT 1
45 #define VMXNET3_COMPAT_FLAG_DISABLE_PCIE \
46 (1 << VMXNET3_COMPAT_FLAG_DISABLE_PCIE_BIT)
47
48 #define VMXNET3_EXP_EP_OFFSET (0x48)
49 #define VMXNET3_MSI_OFFSET(s) \
50 ((s)->compat_flags & VMXNET3_COMPAT_FLAG_OLD_MSI_OFFSETS ? 0x50 : 0x84)
51 #define VMXNET3_MSIX_OFFSET(s) \
52 ((s)->compat_flags & VMXNET3_COMPAT_FLAG_OLD_MSI_OFFSETS ? 0 : 0x9c)
53 #define VMXNET3_DSN_OFFSET (0x100)
54
55 #define VMXNET3_BAR0_IDX (0)
56 #define VMXNET3_BAR1_IDX (1)
57 #define VMXNET3_MSIX_BAR_IDX (2)
58
59 #define VMXNET3_OFF_MSIX_TABLE (0x000)
60 #define VMXNET3_OFF_MSIX_PBA(s) \
61 ((s)->compat_flags & VMXNET3_COMPAT_FLAG_OLD_MSI_OFFSETS ? 0x800 : 0x1000)
62
63 /* Link speed in Mbps should be shifted by 16 */
64 #define VMXNET3_LINK_SPEED (1000 << 16)
65
66 /* Link status: 1 - up, 0 - down. */
67 #define VMXNET3_LINK_STATUS_UP 0x1
68
69 /* Least significant bit should be set for revision and version */
70 #define VMXNET3_UPT_REVISION 0x1
71 #define VMXNET3_DEVICE_REVISION 0x1
72
73 /* Number of interrupt vectors for non-MSIx modes */
74 #define VMXNET3_MAX_NMSIX_INTRS (1)
75
76 /* Macros for rings descriptors access */
77 #define VMXNET3_READ_TX_QUEUE_DESCR8(_d, dpa, field) \
78 (vmw_shmem_ld8(_d, dpa + offsetof(struct Vmxnet3_TxQueueDesc, field)))
79
80 #define VMXNET3_WRITE_TX_QUEUE_DESCR8(_d, dpa, field, value) \
81 (vmw_shmem_st8(_d, dpa + offsetof(struct Vmxnet3_TxQueueDesc, field, value)))
82
83 #define VMXNET3_READ_TX_QUEUE_DESCR32(_d, dpa, field) \
84 (vmw_shmem_ld32(_d, dpa + offsetof(struct Vmxnet3_TxQueueDesc, field)))
85
86 #define VMXNET3_WRITE_TX_QUEUE_DESCR32(_d, dpa, field, value) \
87 (vmw_shmem_st32(_d, dpa + offsetof(struct Vmxnet3_TxQueueDesc, field), value))
88
89 #define VMXNET3_READ_TX_QUEUE_DESCR64(_d, dpa, field) \
90 (vmw_shmem_ld64(_d, dpa + offsetof(struct Vmxnet3_TxQueueDesc, field)))
91
92 #define VMXNET3_WRITE_TX_QUEUE_DESCR64(_d, dpa, field, value) \
93 (vmw_shmem_st64(_d, dpa + offsetof(struct Vmxnet3_TxQueueDesc, field), value))
94
95 #define VMXNET3_READ_RX_QUEUE_DESCR64(_d, dpa, field) \
96 (vmw_shmem_ld64(_d, dpa + offsetof(struct Vmxnet3_RxQueueDesc, field)))
97
98 #define VMXNET3_READ_RX_QUEUE_DESCR32(_d, dpa, field) \
99 (vmw_shmem_ld32(_d, dpa + offsetof(struct Vmxnet3_RxQueueDesc, field)))
100
101 #define VMXNET3_WRITE_RX_QUEUE_DESCR64(_d, dpa, field, value) \
102 (vmw_shmem_st64(_d, dpa + offsetof(struct Vmxnet3_RxQueueDesc, field), value))
103
104 #define VMXNET3_WRITE_RX_QUEUE_DESCR8(_d, dpa, field, value) \
105 (vmw_shmem_st8(_d, dpa + offsetof(struct Vmxnet3_RxQueueDesc, field), value))
106
107 /* Macros for guest driver shared area access */
108 #define VMXNET3_READ_DRV_SHARED64(_d, shpa, field) \
109 (vmw_shmem_ld64(_d, shpa + offsetof(struct Vmxnet3_DriverShared, field)))
110
111 #define VMXNET3_READ_DRV_SHARED32(_d, shpa, field) \
112 (vmw_shmem_ld32(_d, shpa + offsetof(struct Vmxnet3_DriverShared, field)))
113
114 #define VMXNET3_WRITE_DRV_SHARED32(_d, shpa, field, val) \
115 (vmw_shmem_st32(_d, shpa + offsetof(struct Vmxnet3_DriverShared, field), val))
116
117 #define VMXNET3_READ_DRV_SHARED16(_d, shpa, field) \
118 (vmw_shmem_ld16(_d, shpa + offsetof(struct Vmxnet3_DriverShared, field)))
119
120 #define VMXNET3_READ_DRV_SHARED8(_d, shpa, field) \
121 (vmw_shmem_ld8(_d, shpa + offsetof(struct Vmxnet3_DriverShared, field)))
122
123 #define VMXNET3_READ_DRV_SHARED(_d, shpa, field, b, l) \
124 (vmw_shmem_read(_d, shpa + offsetof(struct Vmxnet3_DriverShared, field), b, l))
125
126 #define VMXNET_FLAG_IS_SET(field, flag) (((field) & (flag)) == (flag))
127
128 typedef struct VMXNET3Class {
129 PCIDeviceClass parent_class;
130 DeviceRealize parent_dc_realize;
131 } VMXNET3Class;
132
133 #define TYPE_VMXNET3 "vmxnet3"
134 #define VMXNET3(obj) OBJECT_CHECK(VMXNET3State, (obj), TYPE_VMXNET3)
135
136 #define VMXNET3_DEVICE_CLASS(klass) \
137 OBJECT_CLASS_CHECK(VMXNET3Class, (klass), TYPE_VMXNET3)
138 #define VMXNET3_DEVICE_GET_CLASS(obj) \
139 OBJECT_GET_CLASS(VMXNET3Class, (obj), TYPE_VMXNET3)
140
141 /* Cyclic ring abstraction */
142 typedef struct {
143 hwaddr pa;
144 size_t size;
145 size_t cell_size;
146 size_t next;
147 uint8_t gen;
148 } Vmxnet3Ring;
149
150 static inline void vmxnet3_ring_init(PCIDevice *d,
151 Vmxnet3Ring *ring,
152 hwaddr pa,
153 size_t size,
154 size_t cell_size,
155 bool zero_region)
156 {
157 ring->pa = pa;
158 ring->size = size;
159 ring->cell_size = cell_size;
160 ring->gen = VMXNET3_INIT_GEN;
161 ring->next = 0;
162
163 if (zero_region) {
164 vmw_shmem_set(d, pa, 0, size * cell_size);
165 }
166 }
167
168 #define VMXNET3_RING_DUMP(macro, ring_name, ridx, r) \
169 macro("%s#%d: base %" PRIx64 " size %zu cell_size %zu gen %d next %zu", \
170 (ring_name), (ridx), \
171 (r)->pa, (r)->size, (r)->cell_size, (r)->gen, (r)->next)
172
173 static inline void vmxnet3_ring_inc(Vmxnet3Ring *ring)
174 {
175 if (++ring->next >= ring->size) {
176 ring->next = 0;
177 ring->gen ^= 1;
178 }
179 }
180
181 static inline void vmxnet3_ring_dec(Vmxnet3Ring *ring)
182 {
183 if (ring->next-- == 0) {
184 ring->next = ring->size - 1;
185 ring->gen ^= 1;
186 }
187 }
188
189 static inline hwaddr vmxnet3_ring_curr_cell_pa(Vmxnet3Ring *ring)
190 {
191 return ring->pa + ring->next * ring->cell_size;
192 }
193
194 static inline void vmxnet3_ring_read_curr_cell(PCIDevice *d, Vmxnet3Ring *ring,
195 void *buff)
196 {
197 vmw_shmem_read(d, vmxnet3_ring_curr_cell_pa(ring), buff, ring->cell_size);
198 }
199
200 static inline void vmxnet3_ring_write_curr_cell(PCIDevice *d, Vmxnet3Ring *ring,
201 void *buff)
202 {
203 vmw_shmem_write(d, vmxnet3_ring_curr_cell_pa(ring), buff, ring->cell_size);
204 }
205
206 static inline size_t vmxnet3_ring_curr_cell_idx(Vmxnet3Ring *ring)
207 {
208 return ring->next;
209 }
210
211 static inline uint8_t vmxnet3_ring_curr_gen(Vmxnet3Ring *ring)
212 {
213 return ring->gen;
214 }
215
216 /* Debug trace-related functions */
217 static inline void
218 vmxnet3_dump_tx_descr(struct Vmxnet3_TxDesc *descr)
219 {
220 VMW_PKPRN("TX DESCR: "
221 "addr %" PRIx64 ", len: %d, gen: %d, rsvd: %d, "
222 "dtype: %d, ext1: %d, msscof: %d, hlen: %d, om: %d, "
223 "eop: %d, cq: %d, ext2: %d, ti: %d, tci: %d",
224 le64_to_cpu(descr->addr), descr->len, descr->gen, descr->rsvd,
225 descr->dtype, descr->ext1, descr->msscof, descr->hlen, descr->om,
226 descr->eop, descr->cq, descr->ext2, descr->ti, descr->tci);
227 }
228
229 static inline void
230 vmxnet3_dump_virt_hdr(struct virtio_net_hdr *vhdr)
231 {
232 VMW_PKPRN("VHDR: flags 0x%x, gso_type: 0x%x, hdr_len: %d, gso_size: %d, "
233 "csum_start: %d, csum_offset: %d",
234 vhdr->flags, vhdr->gso_type, vhdr->hdr_len, vhdr->gso_size,
235 vhdr->csum_start, vhdr->csum_offset);
236 }
237
238 static inline void
239 vmxnet3_dump_rx_descr(struct Vmxnet3_RxDesc *descr)
240 {
241 VMW_PKPRN("RX DESCR: addr %" PRIx64 ", len: %d, gen: %d, rsvd: %d, "
242 "dtype: %d, ext1: %d, btype: %d",
243 le64_to_cpu(descr->addr), descr->len, descr->gen,
244 descr->rsvd, descr->dtype, descr->ext1, descr->btype);
245 }
246
247 /* Device state and helper functions */
248 #define VMXNET3_RX_RINGS_PER_QUEUE (2)
249
250 typedef struct {
251 Vmxnet3Ring tx_ring;
252 Vmxnet3Ring comp_ring;
253
254 uint8_t intr_idx;
255 hwaddr tx_stats_pa;
256 struct UPT1_TxStats txq_stats;
257 } Vmxnet3TxqDescr;
258
259 typedef struct {
260 Vmxnet3Ring rx_ring[VMXNET3_RX_RINGS_PER_QUEUE];
261 Vmxnet3Ring comp_ring;
262 uint8_t intr_idx;
263 hwaddr rx_stats_pa;
264 struct UPT1_RxStats rxq_stats;
265 } Vmxnet3RxqDescr;
266
267 typedef struct {
268 bool is_masked;
269 bool is_pending;
270 bool is_asserted;
271 } Vmxnet3IntState;
272
273 typedef struct {
274 PCIDevice parent_obj;
275 NICState *nic;
276 NICConf conf;
277 MemoryRegion bar0;
278 MemoryRegion bar1;
279 MemoryRegion msix_bar;
280
281 Vmxnet3RxqDescr rxq_descr[VMXNET3_DEVICE_MAX_RX_QUEUES];
282 Vmxnet3TxqDescr txq_descr[VMXNET3_DEVICE_MAX_TX_QUEUES];
283
284 /* Whether MSI-X support was installed successfully */
285 bool msix_used;
286 hwaddr drv_shmem;
287 hwaddr temp_shared_guest_driver_memory;
288
289 uint8_t txq_num;
290
291 /* This boolean tells whether RX packet being indicated has to */
292 /* be split into head and body chunks from different RX rings */
293 bool rx_packets_compound;
294
295 bool rx_vlan_stripping;
296 bool lro_supported;
297
298 uint8_t rxq_num;
299
300 /* Network MTU */
301 uint32_t mtu;
302
303 /* Maximum number of fragments for indicated TX packets */
304 uint32_t max_tx_frags;
305
306 /* Maximum number of fragments for indicated RX packets */
307 uint16_t max_rx_frags;
308
309 /* Index for events interrupt */
310 uint8_t event_int_idx;
311
312 /* Whether automatic interrupts masking enabled */
313 bool auto_int_masking;
314
315 bool peer_has_vhdr;
316
317 /* TX packets to QEMU interface */
318 struct NetTxPkt *tx_pkt;
319 uint32_t offload_mode;
320 uint32_t cso_or_gso_size;
321 uint16_t tci;
322 bool needs_vlan;
323
324 struct NetRxPkt *rx_pkt;
325
326 bool tx_sop;
327 bool skip_current_tx_pkt;
328
329 uint32_t device_active;
330 uint32_t last_command;
331
332 uint32_t link_status_and_speed;
333
334 Vmxnet3IntState interrupt_states[VMXNET3_MAX_INTRS];
335
336 uint32_t temp_mac; /* To store the low part first */
337
338 MACAddr perm_mac;
339 uint32_t vlan_table[VMXNET3_VFT_SIZE];
340 uint32_t rx_mode;
341 MACAddr *mcast_list;
342 uint32_t mcast_list_len;
343 uint32_t mcast_list_buff_size; /* needed for live migration. */
344
345 /* Compatibility flags for migration */
346 uint32_t compat_flags;
347 } VMXNET3State;
348
349 /* Interrupt management */
350
351 /*
352 * This function returns sign whether interrupt line is in asserted state
353 * This depends on the type of interrupt used. For INTX interrupt line will
354 * be asserted until explicit deassertion, for MSI(X) interrupt line will
355 * be deasserted automatically due to notification semantics of the MSI(X)
356 * interrupts
357 */
358 static bool _vmxnet3_assert_interrupt_line(VMXNET3State *s, uint32_t int_idx)
359 {
360 PCIDevice *d = PCI_DEVICE(s);
361
362 if (s->msix_used && msix_enabled(d)) {
363 VMW_IRPRN("Sending MSI-X notification for vector %u", int_idx);
364 msix_notify(d, int_idx);
365 return false;
366 }
367 if (msi_enabled(d)) {
368 VMW_IRPRN("Sending MSI notification for vector %u", int_idx);
369 msi_notify(d, int_idx);
370 return false;
371 }
372
373 VMW_IRPRN("Asserting line for interrupt %u", int_idx);
374 pci_irq_assert(d);
375 return true;
376 }
377
378 static void _vmxnet3_deassert_interrupt_line(VMXNET3State *s, int lidx)
379 {
380 PCIDevice *d = PCI_DEVICE(s);
381
382 /*
383 * This function should never be called for MSI(X) interrupts
384 * because deassertion never required for message interrupts
385 */
386 assert(!s->msix_used || !msix_enabled(d));
387 /*
388 * This function should never be called for MSI(X) interrupts
389 * because deassertion never required for message interrupts
390 */
391 assert(!msi_enabled(d));
392
393 VMW_IRPRN("Deasserting line for interrupt %u", lidx);
394 pci_irq_deassert(d);
395 }
396
397 static void vmxnet3_update_interrupt_line_state(VMXNET3State *s, int lidx)
398 {
399 if (!s->interrupt_states[lidx].is_pending &&
400 s->interrupt_states[lidx].is_asserted) {
401 VMW_IRPRN("New interrupt line state for index %d is DOWN", lidx);
402 _vmxnet3_deassert_interrupt_line(s, lidx);
403 s->interrupt_states[lidx].is_asserted = false;
404 return;
405 }
406
407 if (s->interrupt_states[lidx].is_pending &&
408 !s->interrupt_states[lidx].is_masked &&
409 !s->interrupt_states[lidx].is_asserted) {
410 VMW_IRPRN("New interrupt line state for index %d is UP", lidx);
411 s->interrupt_states[lidx].is_asserted =
412 _vmxnet3_assert_interrupt_line(s, lidx);
413 s->interrupt_states[lidx].is_pending = false;
414 return;
415 }
416 }
417
418 static void vmxnet3_trigger_interrupt(VMXNET3State *s, int lidx)
419 {
420 PCIDevice *d = PCI_DEVICE(s);
421 s->interrupt_states[lidx].is_pending = true;
422 vmxnet3_update_interrupt_line_state(s, lidx);
423
424 if (s->msix_used && msix_enabled(d) && s->auto_int_masking) {
425 goto do_automask;
426 }
427
428 if (msi_enabled(d) && s->auto_int_masking) {
429 goto do_automask;
430 }
431
432 return;
433
434 do_automask:
435 s->interrupt_states[lidx].is_masked = true;
436 vmxnet3_update_interrupt_line_state(s, lidx);
437 }
438
439 static bool vmxnet3_interrupt_asserted(VMXNET3State *s, int lidx)
440 {
441 return s->interrupt_states[lidx].is_asserted;
442 }
443
444 static void vmxnet3_clear_interrupt(VMXNET3State *s, int int_idx)
445 {
446 s->interrupt_states[int_idx].is_pending = false;
447 if (s->auto_int_masking) {
448 s->interrupt_states[int_idx].is_masked = true;
449 }
450 vmxnet3_update_interrupt_line_state(s, int_idx);
451 }
452
453 static void
454 vmxnet3_on_interrupt_mask_changed(VMXNET3State *s, int lidx, bool is_masked)
455 {
456 s->interrupt_states[lidx].is_masked = is_masked;
457 vmxnet3_update_interrupt_line_state(s, lidx);
458 }
459
460 static bool vmxnet3_verify_driver_magic(PCIDevice *d, hwaddr dshmem)
461 {
462 return (VMXNET3_READ_DRV_SHARED32(d, dshmem, magic) == VMXNET3_REV1_MAGIC);
463 }
464
465 #define VMXNET3_GET_BYTE(x, byte_num) (((x) >> (byte_num)*8) & 0xFF)
466 #define VMXNET3_MAKE_BYTE(byte_num, val) \
467 (((uint32_t)((val) & 0xFF)) << (byte_num)*8)
468
469 static void vmxnet3_set_variable_mac(VMXNET3State *s, uint32_t h, uint32_t l)
470 {
471 s->conf.macaddr.a[0] = VMXNET3_GET_BYTE(l, 0);
472 s->conf.macaddr.a[1] = VMXNET3_GET_BYTE(l, 1);
473 s->conf.macaddr.a[2] = VMXNET3_GET_BYTE(l, 2);
474 s->conf.macaddr.a[3] = VMXNET3_GET_BYTE(l, 3);
475 s->conf.macaddr.a[4] = VMXNET3_GET_BYTE(h, 0);
476 s->conf.macaddr.a[5] = VMXNET3_GET_BYTE(h, 1);
477
478 VMW_CFPRN("Variable MAC: " MAC_FMT, MAC_ARG(s->conf.macaddr.a));
479
480 qemu_format_nic_info_str(qemu_get_queue(s->nic), s->conf.macaddr.a);
481 }
482
483 static uint64_t vmxnet3_get_mac_low(MACAddr *addr)
484 {
485 return VMXNET3_MAKE_BYTE(0, addr->a[0]) |
486 VMXNET3_MAKE_BYTE(1, addr->a[1]) |
487 VMXNET3_MAKE_BYTE(2, addr->a[2]) |
488 VMXNET3_MAKE_BYTE(3, addr->a[3]);
489 }
490
491 static uint64_t vmxnet3_get_mac_high(MACAddr *addr)
492 {
493 return VMXNET3_MAKE_BYTE(0, addr->a[4]) |
494 VMXNET3_MAKE_BYTE(1, addr->a[5]);
495 }
496
497 static void
498 vmxnet3_inc_tx_consumption_counter(VMXNET3State *s, int qidx)
499 {
500 vmxnet3_ring_inc(&s->txq_descr[qidx].tx_ring);
501 }
502
503 static inline void
504 vmxnet3_inc_rx_consumption_counter(VMXNET3State *s, int qidx, int ridx)
505 {
506 vmxnet3_ring_inc(&s->rxq_descr[qidx].rx_ring[ridx]);
507 }
508
509 static inline void
510 vmxnet3_inc_tx_completion_counter(VMXNET3State *s, int qidx)
511 {
512 vmxnet3_ring_inc(&s->txq_descr[qidx].comp_ring);
513 }
514
515 static void
516 vmxnet3_inc_rx_completion_counter(VMXNET3State *s, int qidx)
517 {
518 vmxnet3_ring_inc(&s->rxq_descr[qidx].comp_ring);
519 }
520
521 static void
522 vmxnet3_dec_rx_completion_counter(VMXNET3State *s, int qidx)
523 {
524 vmxnet3_ring_dec(&s->rxq_descr[qidx].comp_ring);
525 }
526
527 static void vmxnet3_complete_packet(VMXNET3State *s, int qidx, uint32_t tx_ridx)
528 {
529 struct Vmxnet3_TxCompDesc txcq_descr;
530 PCIDevice *d = PCI_DEVICE(s);
531
532 VMXNET3_RING_DUMP(VMW_RIPRN, "TXC", qidx, &s->txq_descr[qidx].comp_ring);
533
534 memset(&txcq_descr, 0, sizeof(txcq_descr));
535 txcq_descr.txdIdx = tx_ridx;
536 txcq_descr.gen = vmxnet3_ring_curr_gen(&s->txq_descr[qidx].comp_ring);
537
538 vmxnet3_ring_write_curr_cell(d, &s->txq_descr[qidx].comp_ring, &txcq_descr);
539
540 /* Flush changes in TX descriptor before changing the counter value */
541 smp_wmb();
542
543 vmxnet3_inc_tx_completion_counter(s, qidx);
544 vmxnet3_trigger_interrupt(s, s->txq_descr[qidx].intr_idx);
545 }
546
547 static bool
548 vmxnet3_setup_tx_offloads(VMXNET3State *s)
549 {
550 switch (s->offload_mode) {
551 case VMXNET3_OM_NONE:
552 net_tx_pkt_build_vheader(s->tx_pkt, false, false, 0);
553 break;
554
555 case VMXNET3_OM_CSUM:
556 net_tx_pkt_build_vheader(s->tx_pkt, false, true, 0);
557 VMW_PKPRN("L4 CSO requested\n");
558 break;
559
560 case VMXNET3_OM_TSO:
561 net_tx_pkt_build_vheader(s->tx_pkt, true, true,
562 s->cso_or_gso_size);
563 net_tx_pkt_update_ip_checksums(s->tx_pkt);
564 VMW_PKPRN("GSO offload requested.");
565 break;
566
567 default:
568 g_assert_not_reached();
569 return false;
570 }
571
572 return true;
573 }
574
575 static void
576 vmxnet3_tx_retrieve_metadata(VMXNET3State *s,
577 const struct Vmxnet3_TxDesc *txd)
578 {
579 s->offload_mode = txd->om;
580 s->cso_or_gso_size = txd->msscof;
581 s->tci = txd->tci;
582 s->needs_vlan = txd->ti;
583 }
584
585 typedef enum {
586 VMXNET3_PKT_STATUS_OK,
587 VMXNET3_PKT_STATUS_ERROR,
588 VMXNET3_PKT_STATUS_DISCARD,/* only for tx */
589 VMXNET3_PKT_STATUS_OUT_OF_BUF /* only for rx */
590 } Vmxnet3PktStatus;
591
592 static void
593 vmxnet3_on_tx_done_update_stats(VMXNET3State *s, int qidx,
594 Vmxnet3PktStatus status)
595 {
596 size_t tot_len = net_tx_pkt_get_total_len(s->tx_pkt);
597 struct UPT1_TxStats *stats = &s->txq_descr[qidx].txq_stats;
598
599 switch (status) {
600 case VMXNET3_PKT_STATUS_OK:
601 switch (net_tx_pkt_get_packet_type(s->tx_pkt)) {
602 case ETH_PKT_BCAST:
603 stats->bcastPktsTxOK++;
604 stats->bcastBytesTxOK += tot_len;
605 break;
606 case ETH_PKT_MCAST:
607 stats->mcastPktsTxOK++;
608 stats->mcastBytesTxOK += tot_len;
609 break;
610 case ETH_PKT_UCAST:
611 stats->ucastPktsTxOK++;
612 stats->ucastBytesTxOK += tot_len;
613 break;
614 default:
615 g_assert_not_reached();
616 }
617
618 if (s->offload_mode == VMXNET3_OM_TSO) {
619 /*
620 * According to VMWARE headers this statistic is a number
621 * of packets after segmentation but since we don't have
622 * this information in QEMU model, the best we can do is to
623 * provide number of non-segmented packets
624 */
625 stats->TSOPktsTxOK++;
626 stats->TSOBytesTxOK += tot_len;
627 }
628 break;
629
630 case VMXNET3_PKT_STATUS_DISCARD:
631 stats->pktsTxDiscard++;
632 break;
633
634 case VMXNET3_PKT_STATUS_ERROR:
635 stats->pktsTxError++;
636 break;
637
638 default:
639 g_assert_not_reached();
640 }
641 }
642
643 static void
644 vmxnet3_on_rx_done_update_stats(VMXNET3State *s,
645 int qidx,
646 Vmxnet3PktStatus status)
647 {
648 struct UPT1_RxStats *stats = &s->rxq_descr[qidx].rxq_stats;
649 size_t tot_len = net_rx_pkt_get_total_len(s->rx_pkt);
650
651 switch (status) {
652 case VMXNET3_PKT_STATUS_OUT_OF_BUF:
653 stats->pktsRxOutOfBuf++;
654 break;
655
656 case VMXNET3_PKT_STATUS_ERROR:
657 stats->pktsRxError++;
658 break;
659 case VMXNET3_PKT_STATUS_OK:
660 switch (net_rx_pkt_get_packet_type(s->rx_pkt)) {
661 case ETH_PKT_BCAST:
662 stats->bcastPktsRxOK++;
663 stats->bcastBytesRxOK += tot_len;
664 break;
665 case ETH_PKT_MCAST:
666 stats->mcastPktsRxOK++;
667 stats->mcastBytesRxOK += tot_len;
668 break;
669 case ETH_PKT_UCAST:
670 stats->ucastPktsRxOK++;
671 stats->ucastBytesRxOK += tot_len;
672 break;
673 default:
674 g_assert_not_reached();
675 }
676
677 if (tot_len > s->mtu) {
678 stats->LROPktsRxOK++;
679 stats->LROBytesRxOK += tot_len;
680 }
681 break;
682 default:
683 g_assert_not_reached();
684 }
685 }
686
687 static inline bool
688 vmxnet3_pop_next_tx_descr(VMXNET3State *s,
689 int qidx,
690 struct Vmxnet3_TxDesc *txd,
691 uint32_t *descr_idx)
692 {
693 Vmxnet3Ring *ring = &s->txq_descr[qidx].tx_ring;
694 PCIDevice *d = PCI_DEVICE(s);
695
696 vmxnet3_ring_read_curr_cell(d, ring, txd);
697 if (txd->gen == vmxnet3_ring_curr_gen(ring)) {
698 /* Only read after generation field verification */
699 smp_rmb();
700 /* Re-read to be sure we got the latest version */
701 vmxnet3_ring_read_curr_cell(d, ring, txd);
702 VMXNET3_RING_DUMP(VMW_RIPRN, "TX", qidx, ring);
703 *descr_idx = vmxnet3_ring_curr_cell_idx(ring);
704 vmxnet3_inc_tx_consumption_counter(s, qidx);
705 return true;
706 }
707
708 return false;
709 }
710
711 static bool
712 vmxnet3_send_packet(VMXNET3State *s, uint32_t qidx)
713 {
714 Vmxnet3PktStatus status = VMXNET3_PKT_STATUS_OK;
715
716 if (!vmxnet3_setup_tx_offloads(s)) {
717 status = VMXNET3_PKT_STATUS_ERROR;
718 goto func_exit;
719 }
720
721 /* debug prints */
722 vmxnet3_dump_virt_hdr(net_tx_pkt_get_vhdr(s->tx_pkt));
723 net_tx_pkt_dump(s->tx_pkt);
724
725 if (!net_tx_pkt_send(s->tx_pkt, qemu_get_queue(s->nic))) {
726 status = VMXNET3_PKT_STATUS_DISCARD;
727 goto func_exit;
728 }
729
730 func_exit:
731 vmxnet3_on_tx_done_update_stats(s, qidx, status);
732 return (status == VMXNET3_PKT_STATUS_OK);
733 }
734
735 static void vmxnet3_process_tx_queue(VMXNET3State *s, int qidx)
736 {
737 struct Vmxnet3_TxDesc txd;
738 uint32_t txd_idx;
739 uint32_t data_len;
740 hwaddr data_pa;
741
742 for (;;) {
743 if (!vmxnet3_pop_next_tx_descr(s, qidx, &txd, &txd_idx)) {
744 break;
745 }
746
747 vmxnet3_dump_tx_descr(&txd);
748
749 if (!s->skip_current_tx_pkt) {
750 data_len = (txd.len > 0) ? txd.len : VMXNET3_MAX_TX_BUF_SIZE;
751 data_pa = le64_to_cpu(txd.addr);
752
753 if (!net_tx_pkt_add_raw_fragment(s->tx_pkt,
754 data_pa,
755 data_len)) {
756 s->skip_current_tx_pkt = true;
757 }
758 }
759
760 if (s->tx_sop) {
761 vmxnet3_tx_retrieve_metadata(s, &txd);
762 s->tx_sop = false;
763 }
764
765 if (txd.eop) {
766 if (!s->skip_current_tx_pkt && net_tx_pkt_parse(s->tx_pkt)) {
767 if (s->needs_vlan) {
768 net_tx_pkt_setup_vlan_header(s->tx_pkt, s->tci);
769 }
770
771 vmxnet3_send_packet(s, qidx);
772 } else {
773 vmxnet3_on_tx_done_update_stats(s, qidx,
774 VMXNET3_PKT_STATUS_ERROR);
775 }
776
777 vmxnet3_complete_packet(s, qidx, txd_idx);
778 s->tx_sop = true;
779 s->skip_current_tx_pkt = false;
780 net_tx_pkt_reset(s->tx_pkt);
781 }
782 }
783 }
784
785 static inline void
786 vmxnet3_read_next_rx_descr(VMXNET3State *s, int qidx, int ridx,
787 struct Vmxnet3_RxDesc *dbuf, uint32_t *didx)
788 {
789 PCIDevice *d = PCI_DEVICE(s);
790
791 Vmxnet3Ring *ring = &s->rxq_descr[qidx].rx_ring[ridx];
792 *didx = vmxnet3_ring_curr_cell_idx(ring);
793 vmxnet3_ring_read_curr_cell(d, ring, dbuf);
794 }
795
796 static inline uint8_t
797 vmxnet3_get_rx_ring_gen(VMXNET3State *s, int qidx, int ridx)
798 {
799 return s->rxq_descr[qidx].rx_ring[ridx].gen;
800 }
801
802 static inline hwaddr
803 vmxnet3_pop_rxc_descr(VMXNET3State *s, int qidx, uint32_t *descr_gen)
804 {
805 uint8_t ring_gen;
806 struct Vmxnet3_RxCompDesc rxcd;
807
808 hwaddr daddr =
809 vmxnet3_ring_curr_cell_pa(&s->rxq_descr[qidx].comp_ring);
810
811 pci_dma_read(PCI_DEVICE(s),
812 daddr, &rxcd, sizeof(struct Vmxnet3_RxCompDesc));
813 ring_gen = vmxnet3_ring_curr_gen(&s->rxq_descr[qidx].comp_ring);
814
815 if (rxcd.gen != ring_gen) {
816 *descr_gen = ring_gen;
817 vmxnet3_inc_rx_completion_counter(s, qidx);
818 return daddr;
819 }
820
821 return 0;
822 }
823
824 static inline void
825 vmxnet3_revert_rxc_descr(VMXNET3State *s, int qidx)
826 {
827 vmxnet3_dec_rx_completion_counter(s, qidx);
828 }
829
830 #define RXQ_IDX (0)
831 #define RX_HEAD_BODY_RING (0)
832 #define RX_BODY_ONLY_RING (1)
833
834 static bool
835 vmxnet3_get_next_head_rx_descr(VMXNET3State *s,
836 struct Vmxnet3_RxDesc *descr_buf,
837 uint32_t *descr_idx,
838 uint32_t *ridx)
839 {
840 for (;;) {
841 uint32_t ring_gen;
842 vmxnet3_read_next_rx_descr(s, RXQ_IDX, RX_HEAD_BODY_RING,
843 descr_buf, descr_idx);
844
845 /* If no more free descriptors - return */
846 ring_gen = vmxnet3_get_rx_ring_gen(s, RXQ_IDX, RX_HEAD_BODY_RING);
847 if (descr_buf->gen != ring_gen) {
848 return false;
849 }
850
851 /* Only read after generation field verification */
852 smp_rmb();
853 /* Re-read to be sure we got the latest version */
854 vmxnet3_read_next_rx_descr(s, RXQ_IDX, RX_HEAD_BODY_RING,
855 descr_buf, descr_idx);
856
857 /* Mark current descriptor as used/skipped */
858 vmxnet3_inc_rx_consumption_counter(s, RXQ_IDX, RX_HEAD_BODY_RING);
859
860 /* If this is what we are looking for - return */
861 if (descr_buf->btype == VMXNET3_RXD_BTYPE_HEAD) {
862 *ridx = RX_HEAD_BODY_RING;
863 return true;
864 }
865 }
866 }
867
868 static bool
869 vmxnet3_get_next_body_rx_descr(VMXNET3State *s,
870 struct Vmxnet3_RxDesc *d,
871 uint32_t *didx,
872 uint32_t *ridx)
873 {
874 vmxnet3_read_next_rx_descr(s, RXQ_IDX, RX_HEAD_BODY_RING, d, didx);
875
876 /* Try to find corresponding descriptor in head/body ring */
877 if (d->gen == vmxnet3_get_rx_ring_gen(s, RXQ_IDX, RX_HEAD_BODY_RING)) {
878 /* Only read after generation field verification */
879 smp_rmb();
880 /* Re-read to be sure we got the latest version */
881 vmxnet3_read_next_rx_descr(s, RXQ_IDX, RX_HEAD_BODY_RING, d, didx);
882 if (d->btype == VMXNET3_RXD_BTYPE_BODY) {
883 vmxnet3_inc_rx_consumption_counter(s, RXQ_IDX, RX_HEAD_BODY_RING);
884 *ridx = RX_HEAD_BODY_RING;
885 return true;
886 }
887 }
888
889 /*
890 * If there is no free descriptors on head/body ring or next free
891 * descriptor is a head descriptor switch to body only ring
892 */
893 vmxnet3_read_next_rx_descr(s, RXQ_IDX, RX_BODY_ONLY_RING, d, didx);
894
895 /* If no more free descriptors - return */
896 if (d->gen == vmxnet3_get_rx_ring_gen(s, RXQ_IDX, RX_BODY_ONLY_RING)) {
897 /* Only read after generation field verification */
898 smp_rmb();
899 /* Re-read to be sure we got the latest version */
900 vmxnet3_read_next_rx_descr(s, RXQ_IDX, RX_BODY_ONLY_RING, d, didx);
901 assert(d->btype == VMXNET3_RXD_BTYPE_BODY);
902 *ridx = RX_BODY_ONLY_RING;
903 vmxnet3_inc_rx_consumption_counter(s, RXQ_IDX, RX_BODY_ONLY_RING);
904 return true;
905 }
906
907 return false;
908 }
909
910 static inline bool
911 vmxnet3_get_next_rx_descr(VMXNET3State *s, bool is_head,
912 struct Vmxnet3_RxDesc *descr_buf,
913 uint32_t *descr_idx,
914 uint32_t *ridx)
915 {
916 if (is_head || !s->rx_packets_compound) {
917 return vmxnet3_get_next_head_rx_descr(s, descr_buf, descr_idx, ridx);
918 } else {
919 return vmxnet3_get_next_body_rx_descr(s, descr_buf, descr_idx, ridx);
920 }
921 }
922
923 /* In case packet was csum offloaded (either NEEDS_CSUM or DATA_VALID),
924 * the implementation always passes an RxCompDesc with a "Checksum
925 * calculated and found correct" to the OS (cnc=0 and tuc=1, see
926 * vmxnet3_rx_update_descr). This emulates the observed ESXi behavior.
927 *
928 * Therefore, if packet has the NEEDS_CSUM set, we must calculate
929 * and place a fully computed checksum into the tcp/udp header.
930 * Otherwise, the OS driver will receive a checksum-correct indication
931 * (CHECKSUM_UNNECESSARY), but with the actual tcp/udp checksum field
932 * having just the pseudo header csum value.
933 *
934 * While this is not a problem if packet is destined for local delivery,
935 * in the case the host OS performs forwarding, it will forward an
936 * incorrectly checksummed packet.
937 */
938 static void vmxnet3_rx_need_csum_calculate(struct NetRxPkt *pkt,
939 const void *pkt_data,
940 size_t pkt_len)
941 {
942 struct virtio_net_hdr *vhdr;
943 bool isip4, isip6, istcp, isudp;
944 uint8_t *data;
945 int len;
946
947 if (!net_rx_pkt_has_virt_hdr(pkt)) {
948 return;
949 }
950
951 vhdr = net_rx_pkt_get_vhdr(pkt);
952 if (!VMXNET_FLAG_IS_SET(vhdr->flags, VIRTIO_NET_HDR_F_NEEDS_CSUM)) {
953 return;
954 }
955
956 net_rx_pkt_get_protocols(pkt, &isip4, &isip6, &isudp, &istcp);
957 if (!(isip4 || isip6) || !(istcp || isudp)) {
958 return;
959 }
960
961 vmxnet3_dump_virt_hdr(vhdr);
962
963 /* Validate packet len: csum_start + scum_offset + length of csum field */
964 if (pkt_len < (vhdr->csum_start + vhdr->csum_offset + 2)) {
965 VMW_PKPRN("packet len:%zu < csum_start(%d) + csum_offset(%d) + 2, "
966 "cannot calculate checksum",
967 pkt_len, vhdr->csum_start, vhdr->csum_offset);
968 return;
969 }
970
971 data = (uint8_t *)pkt_data + vhdr->csum_start;
972 len = pkt_len - vhdr->csum_start;
973 /* Put the checksum obtained into the packet */
974 stw_be_p(data + vhdr->csum_offset, net_raw_checksum(data, len));
975
976 vhdr->flags &= ~VIRTIO_NET_HDR_F_NEEDS_CSUM;
977 vhdr->flags |= VIRTIO_NET_HDR_F_DATA_VALID;
978 }
979
980 static void vmxnet3_rx_update_descr(struct NetRxPkt *pkt,
981 struct Vmxnet3_RxCompDesc *rxcd)
982 {
983 int csum_ok, is_gso;
984 bool isip4, isip6, istcp, isudp;
985 struct virtio_net_hdr *vhdr;
986 uint8_t offload_type;
987
988 if (net_rx_pkt_is_vlan_stripped(pkt)) {
989 rxcd->ts = 1;
990 rxcd->tci = net_rx_pkt_get_vlan_tag(pkt);
991 }
992
993 if (!net_rx_pkt_has_virt_hdr(pkt)) {
994 goto nocsum;
995 }
996
997 vhdr = net_rx_pkt_get_vhdr(pkt);
998 /*
999 * Checksum is valid when lower level tell so or when lower level
1000 * requires checksum offload telling that packet produced/bridged
1001 * locally and did travel over network after last checksum calculation
1002 * or production
1003 */
1004 csum_ok = VMXNET_FLAG_IS_SET(vhdr->flags, VIRTIO_NET_HDR_F_DATA_VALID) ||
1005 VMXNET_FLAG_IS_SET(vhdr->flags, VIRTIO_NET_HDR_F_NEEDS_CSUM);
1006
1007 offload_type = vhdr->gso_type & ~VIRTIO_NET_HDR_GSO_ECN;
1008 is_gso = (offload_type != VIRTIO_NET_HDR_GSO_NONE) ? 1 : 0;
1009
1010 if (!csum_ok && !is_gso) {
1011 goto nocsum;
1012 }
1013
1014 net_rx_pkt_get_protocols(pkt, &isip4, &isip6, &isudp, &istcp);
1015 if ((!istcp && !isudp) || (!isip4 && !isip6)) {
1016 goto nocsum;
1017 }
1018
1019 rxcd->cnc = 0;
1020 rxcd->v4 = isip4 ? 1 : 0;
1021 rxcd->v6 = isip6 ? 1 : 0;
1022 rxcd->tcp = istcp ? 1 : 0;
1023 rxcd->udp = isudp ? 1 : 0;
1024 rxcd->fcs = rxcd->tuc = rxcd->ipc = 1;
1025 return;
1026
1027 nocsum:
1028 rxcd->cnc = 1;
1029 return;
1030 }
1031
1032 static void
1033 vmxnet3_pci_dma_writev(PCIDevice *pci_dev,
1034 const struct iovec *iov,
1035 size_t start_iov_off,
1036 hwaddr target_addr,
1037 size_t bytes_to_copy)
1038 {
1039 size_t curr_off = 0;
1040 size_t copied = 0;
1041
1042 while (bytes_to_copy) {
1043 if (start_iov_off < (curr_off + iov->iov_len)) {
1044 size_t chunk_len =
1045 MIN((curr_off + iov->iov_len) - start_iov_off, bytes_to_copy);
1046
1047 pci_dma_write(pci_dev, target_addr + copied,
1048 iov->iov_base + start_iov_off - curr_off,
1049 chunk_len);
1050
1051 copied += chunk_len;
1052 start_iov_off += chunk_len;
1053 curr_off = start_iov_off;
1054 bytes_to_copy -= chunk_len;
1055 } else {
1056 curr_off += iov->iov_len;
1057 }
1058 iov++;
1059 }
1060 }
1061
1062 static bool
1063 vmxnet3_indicate_packet(VMXNET3State *s)
1064 {
1065 struct Vmxnet3_RxDesc rxd;
1066 PCIDevice *d = PCI_DEVICE(s);
1067 bool is_head = true;
1068 uint32_t rxd_idx;
1069 uint32_t rx_ridx = 0;
1070
1071 struct Vmxnet3_RxCompDesc rxcd;
1072 uint32_t new_rxcd_gen = VMXNET3_INIT_GEN;
1073 hwaddr new_rxcd_pa = 0;
1074 hwaddr ready_rxcd_pa = 0;
1075 struct iovec *data = net_rx_pkt_get_iovec(s->rx_pkt);
1076 size_t bytes_copied = 0;
1077 size_t bytes_left = net_rx_pkt_get_total_len(s->rx_pkt);
1078 uint16_t num_frags = 0;
1079 size_t chunk_size;
1080
1081 net_rx_pkt_dump(s->rx_pkt);
1082
1083 while (bytes_left > 0) {
1084
1085 /* cannot add more frags to packet */
1086 if (num_frags == s->max_rx_frags) {
1087 break;
1088 }
1089
1090 new_rxcd_pa = vmxnet3_pop_rxc_descr(s, RXQ_IDX, &new_rxcd_gen);
1091 if (!new_rxcd_pa) {
1092 break;
1093 }
1094
1095 if (!vmxnet3_get_next_rx_descr(s, is_head, &rxd, &rxd_idx, &rx_ridx)) {
1096 break;
1097 }
1098
1099 chunk_size = MIN(bytes_left, rxd.len);
1100 vmxnet3_pci_dma_writev(d, data, bytes_copied,
1101 le64_to_cpu(rxd.addr), chunk_size);
1102 bytes_copied += chunk_size;
1103 bytes_left -= chunk_size;
1104
1105 vmxnet3_dump_rx_descr(&rxd);
1106
1107 if (ready_rxcd_pa != 0) {
1108 pci_dma_write(d, ready_rxcd_pa, &rxcd, sizeof(rxcd));
1109 }
1110
1111 memset(&rxcd, 0, sizeof(struct Vmxnet3_RxCompDesc));
1112 rxcd.rxdIdx = rxd_idx;
1113 rxcd.len = chunk_size;
1114 rxcd.sop = is_head;
1115 rxcd.gen = new_rxcd_gen;
1116 rxcd.rqID = RXQ_IDX + rx_ridx * s->rxq_num;
1117
1118 if (bytes_left == 0) {
1119 vmxnet3_rx_update_descr(s->rx_pkt, &rxcd);
1120 }
1121
1122 VMW_RIPRN("RX Completion descriptor: rxRing: %lu rxIdx %lu len %lu "
1123 "sop %d csum_correct %lu",
1124 (unsigned long) rx_ridx,
1125 (unsigned long) rxcd.rxdIdx,
1126 (unsigned long) rxcd.len,
1127 (int) rxcd.sop,
1128 (unsigned long) rxcd.tuc);
1129
1130 is_head = false;
1131 ready_rxcd_pa = new_rxcd_pa;
1132 new_rxcd_pa = 0;
1133 num_frags++;
1134 }
1135
1136 if (ready_rxcd_pa != 0) {
1137 rxcd.eop = 1;
1138 rxcd.err = (bytes_left != 0);
1139
1140 pci_dma_write(d, ready_rxcd_pa, &rxcd, sizeof(rxcd));
1141
1142 /* Flush RX descriptor changes */
1143 smp_wmb();
1144 }
1145
1146 if (new_rxcd_pa != 0) {
1147 vmxnet3_revert_rxc_descr(s, RXQ_IDX);
1148 }
1149
1150 vmxnet3_trigger_interrupt(s, s->rxq_descr[RXQ_IDX].intr_idx);
1151
1152 if (bytes_left == 0) {
1153 vmxnet3_on_rx_done_update_stats(s, RXQ_IDX, VMXNET3_PKT_STATUS_OK);
1154 return true;
1155 } else if (num_frags == s->max_rx_frags) {
1156 vmxnet3_on_rx_done_update_stats(s, RXQ_IDX, VMXNET3_PKT_STATUS_ERROR);
1157 return false;
1158 } else {
1159 vmxnet3_on_rx_done_update_stats(s, RXQ_IDX,
1160 VMXNET3_PKT_STATUS_OUT_OF_BUF);
1161 return false;
1162 }
1163 }
1164
1165 static void
1166 vmxnet3_io_bar0_write(void *opaque, hwaddr addr,
1167 uint64_t val, unsigned size)
1168 {
1169 VMXNET3State *s = opaque;
1170
1171 if (!s->device_active) {
1172 return;
1173 }
1174
1175 if (VMW_IS_MULTIREG_ADDR(addr, VMXNET3_REG_TXPROD,
1176 VMXNET3_DEVICE_MAX_TX_QUEUES, VMXNET3_REG_ALIGN)) {
1177 int tx_queue_idx =
1178 VMW_MULTIREG_IDX_BY_ADDR(addr, VMXNET3_REG_TXPROD,
1179 VMXNET3_REG_ALIGN);
1180 assert(tx_queue_idx <= s->txq_num);
1181 vmxnet3_process_tx_queue(s, tx_queue_idx);
1182 return;
1183 }
1184
1185 if (VMW_IS_MULTIREG_ADDR(addr, VMXNET3_REG_IMR,
1186 VMXNET3_MAX_INTRS, VMXNET3_REG_ALIGN)) {
1187 int l = VMW_MULTIREG_IDX_BY_ADDR(addr, VMXNET3_REG_IMR,
1188 VMXNET3_REG_ALIGN);
1189
1190 VMW_CBPRN("Interrupt mask for line %d written: 0x%" PRIx64, l, val);
1191
1192 vmxnet3_on_interrupt_mask_changed(s, l, val);
1193 return;
1194 }
1195
1196 if (VMW_IS_MULTIREG_ADDR(addr, VMXNET3_REG_RXPROD,
1197 VMXNET3_DEVICE_MAX_RX_QUEUES, VMXNET3_REG_ALIGN) ||
1198 VMW_IS_MULTIREG_ADDR(addr, VMXNET3_REG_RXPROD2,
1199 VMXNET3_DEVICE_MAX_RX_QUEUES, VMXNET3_REG_ALIGN)) {
1200 return;
1201 }
1202
1203 VMW_WRPRN("BAR0 unknown write [%" PRIx64 "] = %" PRIx64 ", size %d",
1204 (uint64_t) addr, val, size);
1205 }
1206
1207 static uint64_t
1208 vmxnet3_io_bar0_read(void *opaque, hwaddr addr, unsigned size)
1209 {
1210 VMXNET3State *s = opaque;
1211
1212 if (VMW_IS_MULTIREG_ADDR(addr, VMXNET3_REG_IMR,
1213 VMXNET3_MAX_INTRS, VMXNET3_REG_ALIGN)) {
1214 int l = VMW_MULTIREG_IDX_BY_ADDR(addr, VMXNET3_REG_IMR,
1215 VMXNET3_REG_ALIGN);
1216 return s->interrupt_states[l].is_masked;
1217 }
1218
1219 VMW_CBPRN("BAR0 unknown read [%" PRIx64 "], size %d", addr, size);
1220 return 0;
1221 }
1222
1223 static void vmxnet3_reset_interrupt_states(VMXNET3State *s)
1224 {
1225 int i;
1226 for (i = 0; i < ARRAY_SIZE(s->interrupt_states); i++) {
1227 s->interrupt_states[i].is_asserted = false;
1228 s->interrupt_states[i].is_pending = false;
1229 s->interrupt_states[i].is_masked = true;
1230 }
1231 }
1232
1233 static void vmxnet3_reset_mac(VMXNET3State *s)
1234 {
1235 memcpy(&s->conf.macaddr.a, &s->perm_mac.a, sizeof(s->perm_mac.a));
1236 VMW_CFPRN("MAC address set to: " MAC_FMT, MAC_ARG(s->conf.macaddr.a));
1237 }
1238
1239 static void vmxnet3_deactivate_device(VMXNET3State *s)
1240 {
1241 if (s->device_active) {
1242 VMW_CBPRN("Deactivating vmxnet3...");
1243 net_tx_pkt_reset(s->tx_pkt);
1244 net_tx_pkt_uninit(s->tx_pkt);
1245 net_rx_pkt_uninit(s->rx_pkt);
1246 s->device_active = false;
1247 }
1248 }
1249
1250 static void vmxnet3_reset(VMXNET3State *s)
1251 {
1252 VMW_CBPRN("Resetting vmxnet3...");
1253
1254 vmxnet3_deactivate_device(s);
1255 vmxnet3_reset_interrupt_states(s);
1256 s->drv_shmem = 0;
1257 s->tx_sop = true;
1258 s->skip_current_tx_pkt = false;
1259 }
1260
1261 static void vmxnet3_update_rx_mode(VMXNET3State *s)
1262 {
1263 PCIDevice *d = PCI_DEVICE(s);
1264
1265 s->rx_mode = VMXNET3_READ_DRV_SHARED32(d, s->drv_shmem,
1266 devRead.rxFilterConf.rxMode);
1267 VMW_CFPRN("RX mode: 0x%08X", s->rx_mode);
1268 }
1269
1270 static void vmxnet3_update_vlan_filters(VMXNET3State *s)
1271 {
1272 int i;
1273 PCIDevice *d = PCI_DEVICE(s);
1274
1275 /* Copy configuration from shared memory */
1276 VMXNET3_READ_DRV_SHARED(d, s->drv_shmem,
1277 devRead.rxFilterConf.vfTable,
1278 s->vlan_table,
1279 sizeof(s->vlan_table));
1280
1281 /* Invert byte order when needed */
1282 for (i = 0; i < ARRAY_SIZE(s->vlan_table); i++) {
1283 s->vlan_table[i] = le32_to_cpu(s->vlan_table[i]);
1284 }
1285
1286 /* Dump configuration for debugging purposes */
1287 VMW_CFPRN("Configured VLANs:");
1288 for (i = 0; i < sizeof(s->vlan_table) * 8; i++) {
1289 if (VMXNET3_VFTABLE_ENTRY_IS_SET(s->vlan_table, i)) {
1290 VMW_CFPRN("\tVLAN %d is present", i);
1291 }
1292 }
1293 }
1294
1295 static void vmxnet3_update_mcast_filters(VMXNET3State *s)
1296 {
1297 PCIDevice *d = PCI_DEVICE(s);
1298
1299 uint16_t list_bytes =
1300 VMXNET3_READ_DRV_SHARED16(d, s->drv_shmem,
1301 devRead.rxFilterConf.mfTableLen);
1302
1303 s->mcast_list_len = list_bytes / sizeof(s->mcast_list[0]);
1304
1305 s->mcast_list = g_realloc(s->mcast_list, list_bytes);
1306 if (!s->mcast_list) {
1307 if (s->mcast_list_len == 0) {
1308 VMW_CFPRN("Current multicast list is empty");
1309 } else {
1310 VMW_ERPRN("Failed to allocate multicast list of %d elements",
1311 s->mcast_list_len);
1312 }
1313 s->mcast_list_len = 0;
1314 } else {
1315 int i;
1316 hwaddr mcast_list_pa =
1317 VMXNET3_READ_DRV_SHARED64(d, s->drv_shmem,
1318 devRead.rxFilterConf.mfTablePA);
1319
1320 pci_dma_read(d, mcast_list_pa, s->mcast_list, list_bytes);
1321
1322 VMW_CFPRN("Current multicast list len is %d:", s->mcast_list_len);
1323 for (i = 0; i < s->mcast_list_len; i++) {
1324 VMW_CFPRN("\t" MAC_FMT, MAC_ARG(s->mcast_list[i].a));
1325 }
1326 }
1327 }
1328
1329 static void vmxnet3_setup_rx_filtering(VMXNET3State *s)
1330 {
1331 vmxnet3_update_rx_mode(s);
1332 vmxnet3_update_vlan_filters(s);
1333 vmxnet3_update_mcast_filters(s);
1334 }
1335
1336 static uint32_t vmxnet3_get_interrupt_config(VMXNET3State *s)
1337 {
1338 uint32_t interrupt_mode = VMXNET3_IT_AUTO | (VMXNET3_IMM_AUTO << 2);
1339 VMW_CFPRN("Interrupt config is 0x%X", interrupt_mode);
1340 return interrupt_mode;
1341 }
1342
1343 static void vmxnet3_fill_stats(VMXNET3State *s)
1344 {
1345 int i;
1346 PCIDevice *d = PCI_DEVICE(s);
1347
1348 if (!s->device_active)
1349 return;
1350
1351 for (i = 0; i < s->txq_num; i++) {
1352 pci_dma_write(d,
1353 s->txq_descr[i].tx_stats_pa,
1354 &s->txq_descr[i].txq_stats,
1355 sizeof(s->txq_descr[i].txq_stats));
1356 }
1357
1358 for (i = 0; i < s->rxq_num; i++) {
1359 pci_dma_write(d,
1360 s->rxq_descr[i].rx_stats_pa,
1361 &s->rxq_descr[i].rxq_stats,
1362 sizeof(s->rxq_descr[i].rxq_stats));
1363 }
1364 }
1365
1366 static void vmxnet3_adjust_by_guest_type(VMXNET3State *s)
1367 {
1368 struct Vmxnet3_GOSInfo gos;
1369 PCIDevice *d = PCI_DEVICE(s);
1370
1371 VMXNET3_READ_DRV_SHARED(d, s->drv_shmem, devRead.misc.driverInfo.gos,
1372 &gos, sizeof(gos));
1373 s->rx_packets_compound =
1374 (gos.gosType == VMXNET3_GOS_TYPE_WIN) ? false : true;
1375
1376 VMW_CFPRN("Guest type specifics: RXCOMPOUND: %d", s->rx_packets_compound);
1377 }
1378
1379 static void
1380 vmxnet3_dump_conf_descr(const char *name,
1381 struct Vmxnet3_VariableLenConfDesc *pm_descr)
1382 {
1383 VMW_CFPRN("%s descriptor dump: Version %u, Length %u",
1384 name, pm_descr->confVer, pm_descr->confLen);
1385
1386 };
1387
1388 static void vmxnet3_update_pm_state(VMXNET3State *s)
1389 {
1390 struct Vmxnet3_VariableLenConfDesc pm_descr;
1391 PCIDevice *d = PCI_DEVICE(s);
1392
1393 pm_descr.confLen =
1394 VMXNET3_READ_DRV_SHARED32(d, s->drv_shmem, devRead.pmConfDesc.confLen);
1395 pm_descr.confVer =
1396 VMXNET3_READ_DRV_SHARED32(d, s->drv_shmem, devRead.pmConfDesc.confVer);
1397 pm_descr.confPA =
1398 VMXNET3_READ_DRV_SHARED64(d, s->drv_shmem, devRead.pmConfDesc.confPA);
1399
1400 vmxnet3_dump_conf_descr("PM State", &pm_descr);
1401 }
1402
1403 static void vmxnet3_update_features(VMXNET3State *s)
1404 {
1405 uint32_t guest_features;
1406 int rxcso_supported;
1407 PCIDevice *d = PCI_DEVICE(s);
1408
1409 guest_features = VMXNET3_READ_DRV_SHARED32(d, s->drv_shmem,
1410 devRead.misc.uptFeatures);
1411
1412 rxcso_supported = VMXNET_FLAG_IS_SET(guest_features, UPT1_F_RXCSUM);
1413 s->rx_vlan_stripping = VMXNET_FLAG_IS_SET(guest_features, UPT1_F_RXVLAN);
1414 s->lro_supported = VMXNET_FLAG_IS_SET(guest_features, UPT1_F_LRO);
1415
1416 VMW_CFPRN("Features configuration: LRO: %d, RXCSUM: %d, VLANSTRIP: %d",
1417 s->lro_supported, rxcso_supported,
1418 s->rx_vlan_stripping);
1419 if (s->peer_has_vhdr) {
1420 qemu_set_offload(qemu_get_queue(s->nic)->peer,
1421 rxcso_supported,
1422 s->lro_supported,
1423 s->lro_supported,
1424 0,
1425 0);
1426 }
1427 }
1428
1429 static bool vmxnet3_verify_intx(VMXNET3State *s, int intx)
1430 {
1431 return s->msix_used || msi_enabled(PCI_DEVICE(s))
1432 || intx == pci_get_byte(s->parent_obj.config + PCI_INTERRUPT_PIN) - 1;
1433 }
1434
1435 static void vmxnet3_validate_interrupt_idx(bool is_msix, int idx)
1436 {
1437 int max_ints = is_msix ? VMXNET3_MAX_INTRS : VMXNET3_MAX_NMSIX_INTRS;
1438 if (idx >= max_ints) {
1439 hw_error("Bad interrupt index: %d\n", idx);
1440 }
1441 }
1442
1443 static void vmxnet3_validate_interrupts(VMXNET3State *s)
1444 {
1445 int i;
1446
1447 VMW_CFPRN("Verifying event interrupt index (%d)", s->event_int_idx);
1448 vmxnet3_validate_interrupt_idx(s->msix_used, s->event_int_idx);
1449
1450 for (i = 0; i < s->txq_num; i++) {
1451 int idx = s->txq_descr[i].intr_idx;
1452 VMW_CFPRN("Verifying TX queue %d interrupt index (%d)", i, idx);
1453 vmxnet3_validate_interrupt_idx(s->msix_used, idx);
1454 }
1455
1456 for (i = 0; i < s->rxq_num; i++) {
1457 int idx = s->rxq_descr[i].intr_idx;
1458 VMW_CFPRN("Verifying RX queue %d interrupt index (%d)", i, idx);
1459 vmxnet3_validate_interrupt_idx(s->msix_used, idx);
1460 }
1461 }
1462
1463 static void vmxnet3_validate_queues(VMXNET3State *s)
1464 {
1465 /*
1466 * txq_num and rxq_num are total number of queues
1467 * configured by guest. These numbers must not
1468 * exceed corresponding maximal values.
1469 */
1470
1471 if (s->txq_num > VMXNET3_DEVICE_MAX_TX_QUEUES) {
1472 hw_error("Bad TX queues number: %d\n", s->txq_num);
1473 }
1474
1475 if (s->rxq_num > VMXNET3_DEVICE_MAX_RX_QUEUES) {
1476 hw_error("Bad RX queues number: %d\n", s->rxq_num);
1477 }
1478 }
1479
1480 static void vmxnet3_activate_device(VMXNET3State *s)
1481 {
1482 int i;
1483 static const uint32_t VMXNET3_DEF_TX_THRESHOLD = 1;
1484 PCIDevice *d = PCI_DEVICE(s);
1485 hwaddr qdescr_table_pa;
1486 uint64_t pa;
1487 uint32_t size;
1488
1489 /* Verify configuration consistency */
1490 if (!vmxnet3_verify_driver_magic(d, s->drv_shmem)) {
1491 VMW_ERPRN("Device configuration received from driver is invalid");
1492 return;
1493 }
1494
1495 /* Verify if device is active */
1496 if (s->device_active) {
1497 VMW_CFPRN("Vmxnet3 device is active");
1498 return;
1499 }
1500
1501 vmxnet3_adjust_by_guest_type(s);
1502 vmxnet3_update_features(s);
1503 vmxnet3_update_pm_state(s);
1504 vmxnet3_setup_rx_filtering(s);
1505 /* Cache fields from shared memory */
1506 s->mtu = VMXNET3_READ_DRV_SHARED32(d, s->drv_shmem, devRead.misc.mtu);
1507 VMW_CFPRN("MTU is %u", s->mtu);
1508
1509 s->max_rx_frags =
1510 VMXNET3_READ_DRV_SHARED16(d, s->drv_shmem, devRead.misc.maxNumRxSG);
1511
1512 if (s->max_rx_frags == 0) {
1513 s->max_rx_frags = 1;
1514 }
1515
1516 VMW_CFPRN("Max RX fragments is %u", s->max_rx_frags);
1517
1518 s->event_int_idx =
1519 VMXNET3_READ_DRV_SHARED8(d, s->drv_shmem, devRead.intrConf.eventIntrIdx);
1520 assert(vmxnet3_verify_intx(s, s->event_int_idx));
1521 VMW_CFPRN("Events interrupt line is %u", s->event_int_idx);
1522
1523 s->auto_int_masking =
1524 VMXNET3_READ_DRV_SHARED8(d, s->drv_shmem, devRead.intrConf.autoMask);
1525 VMW_CFPRN("Automatic interrupt masking is %d", (int)s->auto_int_masking);
1526
1527 s->txq_num =
1528 VMXNET3_READ_DRV_SHARED8(d, s->drv_shmem, devRead.misc.numTxQueues);
1529 s->rxq_num =
1530 VMXNET3_READ_DRV_SHARED8(d, s->drv_shmem, devRead.misc.numRxQueues);
1531
1532 VMW_CFPRN("Number of TX/RX queues %u/%u", s->txq_num, s->rxq_num);
1533 vmxnet3_validate_queues(s);
1534
1535 qdescr_table_pa =
1536 VMXNET3_READ_DRV_SHARED64(d, s->drv_shmem, devRead.misc.queueDescPA);
1537 VMW_CFPRN("TX queues descriptors table is at 0x%" PRIx64, qdescr_table_pa);
1538
1539 /*
1540 * Worst-case scenario is a packet that holds all TX rings space so
1541 * we calculate total size of all TX rings for max TX fragments number
1542 */
1543 s->max_tx_frags = 0;
1544
1545 /* TX queues */
1546 for (i = 0; i < s->txq_num; i++) {
1547 hwaddr qdescr_pa =
1548 qdescr_table_pa + i * sizeof(struct Vmxnet3_TxQueueDesc);
1549
1550 /* Read interrupt number for this TX queue */
1551 s->txq_descr[i].intr_idx =
1552 VMXNET3_READ_TX_QUEUE_DESCR8(d, qdescr_pa, conf.intrIdx);
1553 assert(vmxnet3_verify_intx(s, s->txq_descr[i].intr_idx));
1554
1555 VMW_CFPRN("TX Queue %d interrupt: %d", i, s->txq_descr[i].intr_idx);
1556
1557 /* Read rings memory locations for TX queues */
1558 pa = VMXNET3_READ_TX_QUEUE_DESCR64(d, qdescr_pa, conf.txRingBasePA);
1559 size = VMXNET3_READ_TX_QUEUE_DESCR32(d, qdescr_pa, conf.txRingSize);
1560
1561 vmxnet3_ring_init(d, &s->txq_descr[i].tx_ring, pa, size,
1562 sizeof(struct Vmxnet3_TxDesc), false);
1563 VMXNET3_RING_DUMP(VMW_CFPRN, "TX", i, &s->txq_descr[i].tx_ring);
1564
1565 s->max_tx_frags += size;
1566
1567 /* TXC ring */
1568 pa = VMXNET3_READ_TX_QUEUE_DESCR64(d, qdescr_pa, conf.compRingBasePA);
1569 size = VMXNET3_READ_TX_QUEUE_DESCR32(d, qdescr_pa, conf.compRingSize);
1570 vmxnet3_ring_init(d, &s->txq_descr[i].comp_ring, pa, size,
1571 sizeof(struct Vmxnet3_TxCompDesc), true);
1572 VMXNET3_RING_DUMP(VMW_CFPRN, "TXC", i, &s->txq_descr[i].comp_ring);
1573
1574 s->txq_descr[i].tx_stats_pa =
1575 qdescr_pa + offsetof(struct Vmxnet3_TxQueueDesc, stats);
1576
1577 memset(&s->txq_descr[i].txq_stats, 0,
1578 sizeof(s->txq_descr[i].txq_stats));
1579
1580 /* Fill device-managed parameters for queues */
1581 VMXNET3_WRITE_TX_QUEUE_DESCR32(d, qdescr_pa,
1582 ctrl.txThreshold,
1583 VMXNET3_DEF_TX_THRESHOLD);
1584 }
1585
1586 /* Preallocate TX packet wrapper */
1587 VMW_CFPRN("Max TX fragments is %u", s->max_tx_frags);
1588 net_tx_pkt_init(&s->tx_pkt, PCI_DEVICE(s),
1589 s->max_tx_frags, s->peer_has_vhdr);
1590 net_rx_pkt_init(&s->rx_pkt, s->peer_has_vhdr);
1591
1592 /* Read rings memory locations for RX queues */
1593 for (i = 0; i < s->rxq_num; i++) {
1594 int j;
1595 hwaddr qd_pa =
1596 qdescr_table_pa + s->txq_num * sizeof(struct Vmxnet3_TxQueueDesc) +
1597 i * sizeof(struct Vmxnet3_RxQueueDesc);
1598
1599 /* Read interrupt number for this RX queue */
1600 s->rxq_descr[i].intr_idx =
1601 VMXNET3_READ_TX_QUEUE_DESCR8(d, qd_pa, conf.intrIdx);
1602 assert(vmxnet3_verify_intx(s, s->rxq_descr[i].intr_idx));
1603
1604 VMW_CFPRN("RX Queue %d interrupt: %d", i, s->rxq_descr[i].intr_idx);
1605
1606 /* Read rings memory locations */
1607 for (j = 0; j < VMXNET3_RX_RINGS_PER_QUEUE; j++) {
1608 /* RX rings */
1609 pa = VMXNET3_READ_RX_QUEUE_DESCR64(d, qd_pa, conf.rxRingBasePA[j]);
1610 size = VMXNET3_READ_RX_QUEUE_DESCR32(d, qd_pa, conf.rxRingSize[j]);
1611 vmxnet3_ring_init(d, &s->rxq_descr[i].rx_ring[j], pa, size,
1612 sizeof(struct Vmxnet3_RxDesc), false);
1613 VMW_CFPRN("RX queue %d:%d: Base: %" PRIx64 ", Size: %d",
1614 i, j, pa, size);
1615 }
1616
1617 /* RXC ring */
1618 pa = VMXNET3_READ_RX_QUEUE_DESCR64(d, qd_pa, conf.compRingBasePA);
1619 size = VMXNET3_READ_RX_QUEUE_DESCR32(d, qd_pa, conf.compRingSize);
1620 vmxnet3_ring_init(d, &s->rxq_descr[i].comp_ring, pa, size,
1621 sizeof(struct Vmxnet3_RxCompDesc), true);
1622 VMW_CFPRN("RXC queue %d: Base: %" PRIx64 ", Size: %d", i, pa, size);
1623
1624 s->rxq_descr[i].rx_stats_pa =
1625 qd_pa + offsetof(struct Vmxnet3_RxQueueDesc, stats);
1626 memset(&s->rxq_descr[i].rxq_stats, 0,
1627 sizeof(s->rxq_descr[i].rxq_stats));
1628 }
1629
1630 vmxnet3_validate_interrupts(s);
1631
1632 /* Make sure everything is in place before device activation */
1633 smp_wmb();
1634
1635 vmxnet3_reset_mac(s);
1636
1637 s->device_active = true;
1638 }
1639
1640 static void vmxnet3_handle_command(VMXNET3State *s, uint64_t cmd)
1641 {
1642 s->last_command = cmd;
1643
1644 switch (cmd) {
1645 case VMXNET3_CMD_GET_PERM_MAC_HI:
1646 VMW_CBPRN("Set: Get upper part of permanent MAC");
1647 break;
1648
1649 case VMXNET3_CMD_GET_PERM_MAC_LO:
1650 VMW_CBPRN("Set: Get lower part of permanent MAC");
1651 break;
1652
1653 case VMXNET3_CMD_GET_STATS:
1654 VMW_CBPRN("Set: Get device statistics");
1655 vmxnet3_fill_stats(s);
1656 break;
1657
1658 case VMXNET3_CMD_ACTIVATE_DEV:
1659 VMW_CBPRN("Set: Activating vmxnet3 device");
1660 vmxnet3_activate_device(s);
1661 break;
1662
1663 case VMXNET3_CMD_UPDATE_RX_MODE:
1664 VMW_CBPRN("Set: Update rx mode");
1665 vmxnet3_update_rx_mode(s);
1666 break;
1667
1668 case VMXNET3_CMD_UPDATE_VLAN_FILTERS:
1669 VMW_CBPRN("Set: Update VLAN filters");
1670 vmxnet3_update_vlan_filters(s);
1671 break;
1672
1673 case VMXNET3_CMD_UPDATE_MAC_FILTERS:
1674 VMW_CBPRN("Set: Update MAC filters");
1675 vmxnet3_update_mcast_filters(s);
1676 break;
1677
1678 case VMXNET3_CMD_UPDATE_FEATURE:
1679 VMW_CBPRN("Set: Update features");
1680 vmxnet3_update_features(s);
1681 break;
1682
1683 case VMXNET3_CMD_UPDATE_PMCFG:
1684 VMW_CBPRN("Set: Update power management config");
1685 vmxnet3_update_pm_state(s);
1686 break;
1687
1688 case VMXNET3_CMD_GET_LINK:
1689 VMW_CBPRN("Set: Get link");
1690 break;
1691
1692 case VMXNET3_CMD_RESET_DEV:
1693 VMW_CBPRN("Set: Reset device");
1694 vmxnet3_reset(s);
1695 break;
1696
1697 case VMXNET3_CMD_QUIESCE_DEV:
1698 VMW_CBPRN("Set: VMXNET3_CMD_QUIESCE_DEV - deactivate the device");
1699 vmxnet3_deactivate_device(s);
1700 break;
1701
1702 case VMXNET3_CMD_GET_CONF_INTR:
1703 VMW_CBPRN("Set: VMXNET3_CMD_GET_CONF_INTR - interrupt configuration");
1704 break;
1705
1706 case VMXNET3_CMD_GET_ADAPTIVE_RING_INFO:
1707 VMW_CBPRN("Set: VMXNET3_CMD_GET_ADAPTIVE_RING_INFO - "
1708 "adaptive ring info flags");
1709 break;
1710
1711 case VMXNET3_CMD_GET_DID_LO:
1712 VMW_CBPRN("Set: Get lower part of device ID");
1713 break;
1714
1715 case VMXNET3_CMD_GET_DID_HI:
1716 VMW_CBPRN("Set: Get upper part of device ID");
1717 break;
1718
1719 case VMXNET3_CMD_GET_DEV_EXTRA_INFO:
1720 VMW_CBPRN("Set: Get device extra info");
1721 break;
1722
1723 default:
1724 VMW_CBPRN("Received unknown command: %" PRIx64, cmd);
1725 break;
1726 }
1727 }
1728
1729 static uint64_t vmxnet3_get_command_status(VMXNET3State *s)
1730 {
1731 uint64_t ret;
1732
1733 switch (s->last_command) {
1734 case VMXNET3_CMD_ACTIVATE_DEV:
1735 ret = (s->device_active) ? 0 : 1;
1736 VMW_CFPRN("Device active: %" PRIx64, ret);
1737 break;
1738
1739 case VMXNET3_CMD_RESET_DEV:
1740 case VMXNET3_CMD_QUIESCE_DEV:
1741 case VMXNET3_CMD_GET_QUEUE_STATUS:
1742 case VMXNET3_CMD_GET_DEV_EXTRA_INFO:
1743 ret = 0;
1744 break;
1745
1746 case VMXNET3_CMD_GET_LINK:
1747 ret = s->link_status_and_speed;
1748 VMW_CFPRN("Link and speed: %" PRIx64, ret);
1749 break;
1750
1751 case VMXNET3_CMD_GET_PERM_MAC_LO:
1752 ret = vmxnet3_get_mac_low(&s->perm_mac);
1753 break;
1754
1755 case VMXNET3_CMD_GET_PERM_MAC_HI:
1756 ret = vmxnet3_get_mac_high(&s->perm_mac);
1757 break;
1758
1759 case VMXNET3_CMD_GET_CONF_INTR:
1760 ret = vmxnet3_get_interrupt_config(s);
1761 break;
1762
1763 case VMXNET3_CMD_GET_ADAPTIVE_RING_INFO:
1764 ret = VMXNET3_DISABLE_ADAPTIVE_RING;
1765 break;
1766
1767 case VMXNET3_CMD_GET_DID_LO:
1768 ret = PCI_DEVICE_ID_VMWARE_VMXNET3;
1769 break;
1770
1771 case VMXNET3_CMD_GET_DID_HI:
1772 ret = VMXNET3_DEVICE_REVISION;
1773 break;
1774
1775 default:
1776 VMW_WRPRN("Received request for unknown command: %x", s->last_command);
1777 ret = 0;
1778 break;
1779 }
1780
1781 return ret;
1782 }
1783
1784 static void vmxnet3_set_events(VMXNET3State *s, uint32_t val)
1785 {
1786 uint32_t events;
1787 PCIDevice *d = PCI_DEVICE(s);
1788
1789 VMW_CBPRN("Setting events: 0x%x", val);
1790 events = VMXNET3_READ_DRV_SHARED32(d, s->drv_shmem, ecr) | val;
1791 VMXNET3_WRITE_DRV_SHARED32(d, s->drv_shmem, ecr, events);
1792 }
1793
1794 static void vmxnet3_ack_events(VMXNET3State *s, uint32_t val)
1795 {
1796 PCIDevice *d = PCI_DEVICE(s);
1797 uint32_t events;
1798
1799 VMW_CBPRN("Clearing events: 0x%x", val);
1800 events = VMXNET3_READ_DRV_SHARED32(d, s->drv_shmem, ecr) & ~val;
1801 VMXNET3_WRITE_DRV_SHARED32(d, s->drv_shmem, ecr, events);
1802 }
1803
1804 static void
1805 vmxnet3_io_bar1_write(void *opaque,
1806 hwaddr addr,
1807 uint64_t val,
1808 unsigned size)
1809 {
1810 VMXNET3State *s = opaque;
1811
1812 switch (addr) {
1813 /* Vmxnet3 Revision Report Selection */
1814 case VMXNET3_REG_VRRS:
1815 VMW_CBPRN("Write BAR1 [VMXNET3_REG_VRRS] = %" PRIx64 ", size %d",
1816 val, size);
1817 break;
1818
1819 /* UPT Version Report Selection */
1820 case VMXNET3_REG_UVRS:
1821 VMW_CBPRN("Write BAR1 [VMXNET3_REG_UVRS] = %" PRIx64 ", size %d",
1822 val, size);
1823 break;
1824
1825 /* Driver Shared Address Low */
1826 case VMXNET3_REG_DSAL:
1827 VMW_CBPRN("Write BAR1 [VMXNET3_REG_DSAL] = %" PRIx64 ", size %d",
1828 val, size);
1829 /*
1830 * Guest driver will first write the low part of the shared
1831 * memory address. We save it to temp variable and set the
1832 * shared address only after we get the high part
1833 */
1834 if (val == 0) {
1835 vmxnet3_deactivate_device(s);
1836 }
1837 s->temp_shared_guest_driver_memory = val;
1838 s->drv_shmem = 0;
1839 break;
1840
1841 /* Driver Shared Address High */
1842 case VMXNET3_REG_DSAH:
1843 VMW_CBPRN("Write BAR1 [VMXNET3_REG_DSAH] = %" PRIx64 ", size %d",
1844 val, size);
1845 /*
1846 * Set the shared memory between guest driver and device.
1847 * We already should have low address part.
1848 */
1849 s->drv_shmem = s->temp_shared_guest_driver_memory | (val << 32);
1850 break;
1851
1852 /* Command */
1853 case VMXNET3_REG_CMD:
1854 VMW_CBPRN("Write BAR1 [VMXNET3_REG_CMD] = %" PRIx64 ", size %d",
1855 val, size);
1856 vmxnet3_handle_command(s, val);
1857 break;
1858
1859 /* MAC Address Low */
1860 case VMXNET3_REG_MACL:
1861 VMW_CBPRN("Write BAR1 [VMXNET3_REG_MACL] = %" PRIx64 ", size %d",
1862 val, size);
1863 s->temp_mac = val;
1864 break;
1865
1866 /* MAC Address High */
1867 case VMXNET3_REG_MACH:
1868 VMW_CBPRN("Write BAR1 [VMXNET3_REG_MACH] = %" PRIx64 ", size %d",
1869 val, size);
1870 vmxnet3_set_variable_mac(s, val, s->temp_mac);
1871 break;
1872
1873 /* Interrupt Cause Register */
1874 case VMXNET3_REG_ICR:
1875 VMW_CBPRN("Write BAR1 [VMXNET3_REG_ICR] = %" PRIx64 ", size %d",
1876 val, size);
1877 g_assert_not_reached();
1878 break;
1879
1880 /* Event Cause Register */
1881 case VMXNET3_REG_ECR:
1882 VMW_CBPRN("Write BAR1 [VMXNET3_REG_ECR] = %" PRIx64 ", size %d",
1883 val, size);
1884 vmxnet3_ack_events(s, val);
1885 break;
1886
1887 default:
1888 VMW_CBPRN("Unknown Write to BAR1 [%" PRIx64 "] = %" PRIx64 ", size %d",
1889 addr, val, size);
1890 break;
1891 }
1892 }
1893
1894 static uint64_t
1895 vmxnet3_io_bar1_read(void *opaque, hwaddr addr, unsigned size)
1896 {
1897 VMXNET3State *s = opaque;
1898 uint64_t ret = 0;
1899
1900 switch (addr) {
1901 /* Vmxnet3 Revision Report Selection */
1902 case VMXNET3_REG_VRRS:
1903 VMW_CBPRN("Read BAR1 [VMXNET3_REG_VRRS], size %d", size);
1904 ret = VMXNET3_DEVICE_REVISION;
1905 break;
1906
1907 /* UPT Version Report Selection */
1908 case VMXNET3_REG_UVRS:
1909 VMW_CBPRN("Read BAR1 [VMXNET3_REG_UVRS], size %d", size);
1910 ret = VMXNET3_UPT_REVISION;
1911 break;
1912
1913 /* Command */
1914 case VMXNET3_REG_CMD:
1915 VMW_CBPRN("Read BAR1 [VMXNET3_REG_CMD], size %d", size);
1916 ret = vmxnet3_get_command_status(s);
1917 break;
1918
1919 /* MAC Address Low */
1920 case VMXNET3_REG_MACL:
1921 VMW_CBPRN("Read BAR1 [VMXNET3_REG_MACL], size %d", size);
1922 ret = vmxnet3_get_mac_low(&s->conf.macaddr);
1923 break;
1924
1925 /* MAC Address High */
1926 case VMXNET3_REG_MACH:
1927 VMW_CBPRN("Read BAR1 [VMXNET3_REG_MACH], size %d", size);
1928 ret = vmxnet3_get_mac_high(&s->conf.macaddr);
1929 break;
1930
1931 /*
1932 * Interrupt Cause Register
1933 * Used for legacy interrupts only so interrupt index always 0
1934 */
1935 case VMXNET3_REG_ICR:
1936 VMW_CBPRN("Read BAR1 [VMXNET3_REG_ICR], size %d", size);
1937 if (vmxnet3_interrupt_asserted(s, 0)) {
1938 vmxnet3_clear_interrupt(s, 0);
1939 ret = true;
1940 } else {
1941 ret = false;
1942 }
1943 break;
1944
1945 default:
1946 VMW_CBPRN("Unknow read BAR1[%" PRIx64 "], %d bytes", addr, size);
1947 break;
1948 }
1949
1950 return ret;
1951 }
1952
1953 static int
1954 vmxnet3_can_receive(NetClientState *nc)
1955 {
1956 VMXNET3State *s = qemu_get_nic_opaque(nc);
1957 return s->device_active &&
1958 VMXNET_FLAG_IS_SET(s->link_status_and_speed, VMXNET3_LINK_STATUS_UP);
1959 }
1960
1961 static inline bool
1962 vmxnet3_is_registered_vlan(VMXNET3State *s, const void *data)
1963 {
1964 uint16_t vlan_tag = eth_get_pkt_tci(data) & VLAN_VID_MASK;
1965 if (IS_SPECIAL_VLAN_ID(vlan_tag)) {
1966 return true;
1967 }
1968
1969 return VMXNET3_VFTABLE_ENTRY_IS_SET(s->vlan_table, vlan_tag);
1970 }
1971
1972 static bool
1973 vmxnet3_is_allowed_mcast_group(VMXNET3State *s, const uint8_t *group_mac)
1974 {
1975 int i;
1976 for (i = 0; i < s->mcast_list_len; i++) {
1977 if (!memcmp(group_mac, s->mcast_list[i].a, sizeof(s->mcast_list[i]))) {
1978 return true;
1979 }
1980 }
1981 return false;
1982 }
1983
1984 static bool
1985 vmxnet3_rx_filter_may_indicate(VMXNET3State *s, const void *data,
1986 size_t size)
1987 {
1988 struct eth_header *ehdr = PKT_GET_ETH_HDR(data);
1989
1990 if (VMXNET_FLAG_IS_SET(s->rx_mode, VMXNET3_RXM_PROMISC)) {
1991 return true;
1992 }
1993
1994 if (!vmxnet3_is_registered_vlan(s, data)) {
1995 return false;
1996 }
1997
1998 switch (net_rx_pkt_get_packet_type(s->rx_pkt)) {
1999 case ETH_PKT_UCAST:
2000 if (!VMXNET_FLAG_IS_SET(s->rx_mode, VMXNET3_RXM_UCAST)) {
2001 return false;
2002 }
2003 if (memcmp(s->conf.macaddr.a, ehdr->h_dest, ETH_ALEN)) {
2004 return false;
2005 }
2006 break;
2007
2008 case ETH_PKT_BCAST:
2009 if (!VMXNET_FLAG_IS_SET(s->rx_mode, VMXNET3_RXM_BCAST)) {
2010 return false;
2011 }
2012 break;
2013
2014 case ETH_PKT_MCAST:
2015 if (VMXNET_FLAG_IS_SET(s->rx_mode, VMXNET3_RXM_ALL_MULTI)) {
2016 return true;
2017 }
2018 if (!VMXNET_FLAG_IS_SET(s->rx_mode, VMXNET3_RXM_MCAST)) {
2019 return false;
2020 }
2021 if (!vmxnet3_is_allowed_mcast_group(s, ehdr->h_dest)) {
2022 return false;
2023 }
2024 break;
2025
2026 default:
2027 g_assert_not_reached();
2028 }
2029
2030 return true;
2031 }
2032
2033 static ssize_t
2034 vmxnet3_receive(NetClientState *nc, const uint8_t *buf, size_t size)
2035 {
2036 VMXNET3State *s = qemu_get_nic_opaque(nc);
2037 size_t bytes_indicated;
2038 uint8_t min_buf[MIN_BUF_SIZE];
2039
2040 if (!vmxnet3_can_receive(nc)) {
2041 VMW_PKPRN("Cannot receive now");
2042 return -1;
2043 }
2044
2045 if (s->peer_has_vhdr) {
2046 net_rx_pkt_set_vhdr(s->rx_pkt, (struct virtio_net_hdr *)buf);
2047 buf += sizeof(struct virtio_net_hdr);
2048 size -= sizeof(struct virtio_net_hdr);
2049 }
2050
2051 /* Pad to minimum Ethernet frame length */
2052 if (size < sizeof(min_buf)) {
2053 memcpy(min_buf, buf, size);
2054 memset(&min_buf[size], 0, sizeof(min_buf) - size);
2055 buf = min_buf;
2056 size = sizeof(min_buf);
2057 }
2058
2059 net_rx_pkt_set_packet_type(s->rx_pkt,
2060 get_eth_packet_type(PKT_GET_ETH_HDR(buf)));
2061
2062 if (vmxnet3_rx_filter_may_indicate(s, buf, size)) {
2063 net_rx_pkt_set_protocols(s->rx_pkt, buf, size);
2064 vmxnet3_rx_need_csum_calculate(s->rx_pkt, buf, size);
2065 net_rx_pkt_attach_data(s->rx_pkt, buf, size, s->rx_vlan_stripping);
2066 bytes_indicated = vmxnet3_indicate_packet(s) ? size : -1;
2067 if (bytes_indicated < size) {
2068 VMW_PKPRN("RX: %zu of %zu bytes indicated", bytes_indicated, size);
2069 }
2070 } else {
2071 VMW_PKPRN("Packet dropped by RX filter");
2072 bytes_indicated = size;
2073 }
2074
2075 assert(size > 0);
2076 assert(bytes_indicated != 0);
2077 return bytes_indicated;
2078 }
2079
2080 static void vmxnet3_set_link_status(NetClientState *nc)
2081 {
2082 VMXNET3State *s = qemu_get_nic_opaque(nc);
2083
2084 if (nc->link_down) {
2085 s->link_status_and_speed &= ~VMXNET3_LINK_STATUS_UP;
2086 } else {
2087 s->link_status_and_speed |= VMXNET3_LINK_STATUS_UP;
2088 }
2089
2090 vmxnet3_set_events(s, VMXNET3_ECR_LINK);
2091 vmxnet3_trigger_interrupt(s, s->event_int_idx);
2092 }
2093
2094 static NetClientInfo net_vmxnet3_info = {
2095 .type = NET_CLIENT_DRIVER_NIC,
2096 .size = sizeof(NICState),
2097 .receive = vmxnet3_receive,
2098 .link_status_changed = vmxnet3_set_link_status,
2099 };
2100
2101 static bool vmxnet3_peer_has_vnet_hdr(VMXNET3State *s)
2102 {
2103 NetClientState *nc = qemu_get_queue(s->nic);
2104
2105 if (qemu_has_vnet_hdr(nc->peer)) {
2106 return true;
2107 }
2108
2109 return false;
2110 }
2111
2112 static void vmxnet3_net_uninit(VMXNET3State *s)
2113 {
2114 g_free(s->mcast_list);
2115 vmxnet3_deactivate_device(s);
2116 qemu_del_nic(s->nic);
2117 }
2118
2119 static void vmxnet3_net_init(VMXNET3State *s)
2120 {
2121 DeviceState *d = DEVICE(s);
2122
2123 VMW_CBPRN("vmxnet3_net_init called...");
2124
2125 qemu_macaddr_default_if_unset(&s->conf.macaddr);
2126
2127 /* Windows guest will query the address that was set on init */
2128 memcpy(&s->perm_mac.a, &s->conf.macaddr.a, sizeof(s->perm_mac.a));
2129
2130 s->mcast_list = NULL;
2131 s->mcast_list_len = 0;
2132
2133 s->link_status_and_speed = VMXNET3_LINK_SPEED | VMXNET3_LINK_STATUS_UP;
2134
2135 VMW_CFPRN("Permanent MAC: " MAC_FMT, MAC_ARG(s->perm_mac.a));
2136
2137 s->nic = qemu_new_nic(&net_vmxnet3_info, &s->conf,
2138 object_get_typename(OBJECT(s)),
2139 d->id, s);
2140
2141 s->peer_has_vhdr = vmxnet3_peer_has_vnet_hdr(s);
2142 s->tx_sop = true;
2143 s->skip_current_tx_pkt = false;
2144 s->tx_pkt = NULL;
2145 s->rx_pkt = NULL;
2146 s->rx_vlan_stripping = false;
2147 s->lro_supported = false;
2148
2149 if (s->peer_has_vhdr) {
2150 qemu_set_vnet_hdr_len(qemu_get_queue(s->nic)->peer,
2151 sizeof(struct virtio_net_hdr));
2152
2153 qemu_using_vnet_hdr(qemu_get_queue(s->nic)->peer, 1);
2154 }
2155
2156 qemu_format_nic_info_str(qemu_get_queue(s->nic), s->conf.macaddr.a);
2157 }
2158
2159 static void
2160 vmxnet3_unuse_msix_vectors(VMXNET3State *s, int num_vectors)
2161 {
2162 PCIDevice *d = PCI_DEVICE(s);
2163 int i;
2164 for (i = 0; i < num_vectors; i++) {
2165 msix_vector_unuse(d, i);
2166 }
2167 }
2168
2169 static bool
2170 vmxnet3_use_msix_vectors(VMXNET3State *s, int num_vectors)
2171 {
2172 PCIDevice *d = PCI_DEVICE(s);
2173 int i;
2174 for (i = 0; i < num_vectors; i++) {
2175 int res = msix_vector_use(d, i);
2176 if (0 > res) {
2177 VMW_WRPRN("Failed to use MSI-X vector %d, error %d", i, res);
2178 vmxnet3_unuse_msix_vectors(s, i);
2179 return false;
2180 }
2181 }
2182 return true;
2183 }
2184
2185 static bool
2186 vmxnet3_init_msix(VMXNET3State *s)
2187 {
2188 PCIDevice *d = PCI_DEVICE(s);
2189 int res = msix_init(d, VMXNET3_MAX_INTRS,
2190 &s->msix_bar,
2191 VMXNET3_MSIX_BAR_IDX, VMXNET3_OFF_MSIX_TABLE,
2192 &s->msix_bar,
2193 VMXNET3_MSIX_BAR_IDX, VMXNET3_OFF_MSIX_PBA(s),
2194 VMXNET3_MSIX_OFFSET(s));
2195
2196 if (0 > res) {
2197 VMW_WRPRN("Failed to initialize MSI-X, error %d", res);
2198 s->msix_used = false;
2199 } else {
2200 if (!vmxnet3_use_msix_vectors(s, VMXNET3_MAX_INTRS)) {
2201 VMW_WRPRN("Failed to use MSI-X vectors, error %d", res);
2202 msix_uninit(d, &s->msix_bar, &s->msix_bar);
2203 s->msix_used = false;
2204 } else {
2205 s->msix_used = true;
2206 }
2207 }
2208 return s->msix_used;
2209 }
2210
2211 static void
2212 vmxnet3_cleanup_msix(VMXNET3State *s)
2213 {
2214 PCIDevice *d = PCI_DEVICE(s);
2215
2216 if (s->msix_used) {
2217 vmxnet3_unuse_msix_vectors(s, VMXNET3_MAX_INTRS);
2218 msix_uninit(d, &s->msix_bar, &s->msix_bar);
2219 }
2220 }
2221
2222 static void
2223 vmxnet3_cleanup_msi(VMXNET3State *s)
2224 {
2225 PCIDevice *d = PCI_DEVICE(s);
2226
2227 msi_uninit(d);
2228 }
2229
2230 static void
2231 vmxnet3_msix_save(QEMUFile *f, void *opaque)
2232 {
2233 PCIDevice *d = PCI_DEVICE(opaque);
2234 msix_save(d, f);
2235 }
2236
2237 static int
2238 vmxnet3_msix_load(QEMUFile *f, void *opaque, int version_id)
2239 {
2240 PCIDevice *d = PCI_DEVICE(opaque);
2241 msix_load(d, f);
2242 return 0;
2243 }
2244
2245 static const MemoryRegionOps b0_ops = {
2246 .read = vmxnet3_io_bar0_read,
2247 .write = vmxnet3_io_bar0_write,
2248 .endianness = DEVICE_LITTLE_ENDIAN,
2249 .impl = {
2250 .min_access_size = 4,
2251 .max_access_size = 4,
2252 },
2253 };
2254
2255 static const MemoryRegionOps b1_ops = {
2256 .read = vmxnet3_io_bar1_read,
2257 .write = vmxnet3_io_bar1_write,
2258 .endianness = DEVICE_LITTLE_ENDIAN,
2259 .impl = {
2260 .min_access_size = 4,
2261 .max_access_size = 4,
2262 },
2263 };
2264
2265 static uint64_t vmxnet3_device_serial_num(VMXNET3State *s)
2266 {
2267 uint64_t dsn_payload;
2268 uint8_t *dsnp = (uint8_t *)&dsn_payload;
2269
2270 dsnp[0] = 0xfe;
2271 dsnp[1] = s->conf.macaddr.a[3];
2272 dsnp[2] = s->conf.macaddr.a[4];
2273 dsnp[3] = s->conf.macaddr.a[5];
2274 dsnp[4] = s->conf.macaddr.a[0];
2275 dsnp[5] = s->conf.macaddr.a[1];
2276 dsnp[6] = s->conf.macaddr.a[2];
2277 dsnp[7] = 0xff;
2278 return dsn_payload;
2279 }
2280
2281
2282 #define VMXNET3_USE_64BIT (true)
2283 #define VMXNET3_PER_VECTOR_MASK (false)
2284
2285 static void vmxnet3_pci_realize(PCIDevice *pci_dev, Error **errp)
2286 {
2287 DeviceState *dev = DEVICE(pci_dev);
2288 VMXNET3State *s = VMXNET3(pci_dev);
2289 int ret;
2290
2291 VMW_CBPRN("Starting init...");
2292
2293 memory_region_init_io(&s->bar0, OBJECT(s), &b0_ops, s,
2294 "vmxnet3-b0", VMXNET3_PT_REG_SIZE);
2295 pci_register_bar(pci_dev, VMXNET3_BAR0_IDX,
2296 PCI_BASE_ADDRESS_SPACE_MEMORY, &s->bar0);
2297
2298 memory_region_init_io(&s->bar1, OBJECT(s), &b1_ops, s,
2299 "vmxnet3-b1", VMXNET3_VD_REG_SIZE);
2300 pci_register_bar(pci_dev, VMXNET3_BAR1_IDX,
2301 PCI_BASE_ADDRESS_SPACE_MEMORY, &s->bar1);
2302
2303 memory_region_init(&s->msix_bar, OBJECT(s), "vmxnet3-msix-bar",
2304 VMXNET3_MSIX_BAR_SIZE);
2305 pci_register_bar(pci_dev, VMXNET3_MSIX_BAR_IDX,
2306 PCI_BASE_ADDRESS_SPACE_MEMORY, &s->msix_bar);
2307
2308 vmxnet3_reset_interrupt_states(s);
2309
2310 /* Interrupt pin A */
2311 pci_dev->config[PCI_INTERRUPT_PIN] = 0x01;
2312
2313 ret = msi_init(pci_dev, VMXNET3_MSI_OFFSET(s), VMXNET3_MAX_NMSIX_INTRS,
2314 VMXNET3_USE_64BIT, VMXNET3_PER_VECTOR_MASK, NULL);
2315 /* Any error other than -ENOTSUP(board's MSI support is broken)
2316 * is a programming error. Fall back to INTx silently on -ENOTSUP */
2317 assert(!ret || ret == -ENOTSUP);
2318
2319 if (!vmxnet3_init_msix(s)) {
2320 VMW_WRPRN("Failed to initialize MSI-X, configuration is inconsistent.");
2321 }
2322
2323 vmxnet3_net_init(s);
2324
2325 if (pci_is_express(pci_dev)) {
2326 if (pci_bus_is_express(pci_dev->bus)) {
2327 pcie_endpoint_cap_init(pci_dev, VMXNET3_EXP_EP_OFFSET);
2328 }
2329
2330 pcie_dev_ser_num_init(pci_dev, VMXNET3_DSN_OFFSET,
2331 vmxnet3_device_serial_num(s));
2332 }
2333
2334 register_savevm(dev, "vmxnet3-msix", -1, 1,
2335 vmxnet3_msix_save, vmxnet3_msix_load, s);
2336 }
2337
2338 static void vmxnet3_instance_init(Object *obj)
2339 {
2340 VMXNET3State *s = VMXNET3(obj);
2341 device_add_bootindex_property(obj, &s->conf.bootindex,
2342 "bootindex", "/ethernet-phy@0",
2343 DEVICE(obj), NULL);
2344 }
2345
2346 static void vmxnet3_pci_uninit(PCIDevice *pci_dev)
2347 {
2348 DeviceState *dev = DEVICE(pci_dev);
2349 VMXNET3State *s = VMXNET3(pci_dev);
2350
2351 VMW_CBPRN("Starting uninit...");
2352
2353 unregister_savevm(dev, "vmxnet3-msix", s);
2354
2355 vmxnet3_net_uninit(s);
2356
2357 vmxnet3_cleanup_msix(s);
2358
2359 vmxnet3_cleanup_msi(s);
2360 }
2361
2362 static void vmxnet3_qdev_reset(DeviceState *dev)
2363 {
2364 PCIDevice *d = PCI_DEVICE(dev);
2365 VMXNET3State *s = VMXNET3(d);
2366
2367 VMW_CBPRN("Starting QDEV reset...");
2368 vmxnet3_reset(s);
2369 }
2370
2371 static bool vmxnet3_mc_list_needed(void *opaque)
2372 {
2373 return true;
2374 }
2375
2376 static int vmxnet3_mcast_list_pre_load(void *opaque)
2377 {
2378 VMXNET3State *s = opaque;
2379
2380 s->mcast_list = g_malloc(s->mcast_list_buff_size);
2381
2382 return 0;
2383 }
2384
2385
2386 static void vmxnet3_pre_save(void *opaque)
2387 {
2388 VMXNET3State *s = opaque;
2389
2390 s->mcast_list_buff_size = s->mcast_list_len * sizeof(MACAddr);
2391 }
2392
2393 static const VMStateDescription vmxstate_vmxnet3_mcast_list = {
2394 .name = "vmxnet3/mcast_list",
2395 .version_id = 1,
2396 .minimum_version_id = 1,
2397 .pre_load = vmxnet3_mcast_list_pre_load,
2398 .needed = vmxnet3_mc_list_needed,
2399 .fields = (VMStateField[]) {
2400 VMSTATE_VBUFFER_UINT32(mcast_list, VMXNET3State, 0, NULL, 0,
2401 mcast_list_buff_size),
2402 VMSTATE_END_OF_LIST()
2403 }
2404 };
2405
2406 static void vmxnet3_get_ring_from_file(QEMUFile *f, Vmxnet3Ring *r)
2407 {
2408 r->pa = qemu_get_be64(f);
2409 r->size = qemu_get_be32(f);
2410 r->cell_size = qemu_get_be32(f);
2411 r->next = qemu_get_be32(f);
2412 r->gen = qemu_get_byte(f);
2413 }
2414
2415 static void vmxnet3_put_ring_to_file(QEMUFile *f, Vmxnet3Ring *r)
2416 {
2417 qemu_put_be64(f, r->pa);
2418 qemu_put_be32(f, r->size);
2419 qemu_put_be32(f, r->cell_size);
2420 qemu_put_be32(f, r->next);
2421 qemu_put_byte(f, r->gen);
2422 }
2423
2424 static void vmxnet3_get_tx_stats_from_file(QEMUFile *f,
2425 struct UPT1_TxStats *tx_stat)
2426 {
2427 tx_stat->TSOPktsTxOK = qemu_get_be64(f);
2428 tx_stat->TSOBytesTxOK = qemu_get_be64(f);
2429 tx_stat->ucastPktsTxOK = qemu_get_be64(f);
2430 tx_stat->ucastBytesTxOK = qemu_get_be64(f);
2431 tx_stat->mcastPktsTxOK = qemu_get_be64(f);
2432 tx_stat->mcastBytesTxOK = qemu_get_be64(f);
2433 tx_stat->bcastPktsTxOK = qemu_get_be64(f);
2434 tx_stat->bcastBytesTxOK = qemu_get_be64(f);
2435 tx_stat->pktsTxError = qemu_get_be64(f);
2436 tx_stat->pktsTxDiscard = qemu_get_be64(f);
2437 }
2438
2439 static void vmxnet3_put_tx_stats_to_file(QEMUFile *f,
2440 struct UPT1_TxStats *tx_stat)
2441 {
2442 qemu_put_be64(f, tx_stat->TSOPktsTxOK);
2443 qemu_put_be64(f, tx_stat->TSOBytesTxOK);
2444 qemu_put_be64(f, tx_stat->ucastPktsTxOK);
2445 qemu_put_be64(f, tx_stat->ucastBytesTxOK);
2446 qemu_put_be64(f, tx_stat->mcastPktsTxOK);
2447 qemu_put_be64(f, tx_stat->mcastBytesTxOK);
2448 qemu_put_be64(f, tx_stat->bcastPktsTxOK);
2449 qemu_put_be64(f, tx_stat->bcastBytesTxOK);
2450 qemu_put_be64(f, tx_stat->pktsTxError);
2451 qemu_put_be64(f, tx_stat->pktsTxDiscard);
2452 }
2453
2454 static int vmxnet3_get_txq_descr(QEMUFile *f, void *pv, size_t size)
2455 {
2456 Vmxnet3TxqDescr *r = pv;
2457
2458 vmxnet3_get_ring_from_file(f, &r->tx_ring);
2459 vmxnet3_get_ring_from_file(f, &r->comp_ring);
2460 r->intr_idx = qemu_get_byte(f);
2461 r->tx_stats_pa = qemu_get_be64(f);
2462
2463 vmxnet3_get_tx_stats_from_file(f, &r->txq_stats);
2464
2465 return 0;
2466 }
2467
2468 static void vmxnet3_put_txq_descr(QEMUFile *f, void *pv, size_t size)
2469 {
2470 Vmxnet3TxqDescr *r = pv;
2471
2472 vmxnet3_put_ring_to_file(f, &r->tx_ring);
2473 vmxnet3_put_ring_to_file(f, &r->comp_ring);
2474 qemu_put_byte(f, r->intr_idx);
2475 qemu_put_be64(f, r->tx_stats_pa);
2476 vmxnet3_put_tx_stats_to_file(f, &r->txq_stats);
2477 }
2478
2479 static const VMStateInfo txq_descr_info = {
2480 .name = "txq_descr",
2481 .get = vmxnet3_get_txq_descr,
2482 .put = vmxnet3_put_txq_descr
2483 };
2484
2485 static void vmxnet3_get_rx_stats_from_file(QEMUFile *f,
2486 struct UPT1_RxStats *rx_stat)
2487 {
2488 rx_stat->LROPktsRxOK = qemu_get_be64(f);
2489 rx_stat->LROBytesRxOK = qemu_get_be64(f);
2490 rx_stat->ucastPktsRxOK = qemu_get_be64(f);
2491 rx_stat->ucastBytesRxOK = qemu_get_be64(f);
2492 rx_stat->mcastPktsRxOK = qemu_get_be64(f);
2493 rx_stat->mcastBytesRxOK = qemu_get_be64(f);
2494 rx_stat->bcastPktsRxOK = qemu_get_be64(f);
2495 rx_stat->bcastBytesRxOK = qemu_get_be64(f);
2496 rx_stat->pktsRxOutOfBuf = qemu_get_be64(f);
2497 rx_stat->pktsRxError = qemu_get_be64(f);
2498 }
2499
2500 static void vmxnet3_put_rx_stats_to_file(QEMUFile *f,
2501 struct UPT1_RxStats *rx_stat)
2502 {
2503 qemu_put_be64(f, rx_stat->LROPktsRxOK);
2504 qemu_put_be64(f, rx_stat->LROBytesRxOK);
2505 qemu_put_be64(f, rx_stat->ucastPktsRxOK);
2506 qemu_put_be64(f, rx_stat->ucastBytesRxOK);
2507 qemu_put_be64(f, rx_stat->mcastPktsRxOK);
2508 qemu_put_be64(f, rx_stat->mcastBytesRxOK);
2509 qemu_put_be64(f, rx_stat->bcastPktsRxOK);
2510 qemu_put_be64(f, rx_stat->bcastBytesRxOK);
2511 qemu_put_be64(f, rx_stat->pktsRxOutOfBuf);
2512 qemu_put_be64(f, rx_stat->pktsRxError);
2513 }
2514
2515 static int vmxnet3_get_rxq_descr(QEMUFile *f, void *pv, size_t size)
2516 {
2517 Vmxnet3RxqDescr *r = pv;
2518 int i;
2519
2520 for (i = 0; i < VMXNET3_RX_RINGS_PER_QUEUE; i++) {
2521 vmxnet3_get_ring_from_file(f, &r->rx_ring[i]);
2522 }
2523
2524 vmxnet3_get_ring_from_file(f, &r->comp_ring);
2525 r->intr_idx = qemu_get_byte(f);
2526 r->rx_stats_pa = qemu_get_be64(f);
2527
2528 vmxnet3_get_rx_stats_from_file(f, &r->rxq_stats);
2529
2530 return 0;
2531 }
2532
2533 static void vmxnet3_put_rxq_descr(QEMUFile *f, void *pv, size_t size)
2534 {
2535 Vmxnet3RxqDescr *r = pv;
2536 int i;
2537
2538 for (i = 0; i < VMXNET3_RX_RINGS_PER_QUEUE; i++) {
2539 vmxnet3_put_ring_to_file(f, &r->rx_ring[i]);
2540 }
2541
2542 vmxnet3_put_ring_to_file(f, &r->comp_ring);
2543 qemu_put_byte(f, r->intr_idx);
2544 qemu_put_be64(f, r->rx_stats_pa);
2545 vmxnet3_put_rx_stats_to_file(f, &r->rxq_stats);
2546 }
2547
2548 static int vmxnet3_post_load(void *opaque, int version_id)
2549 {
2550 VMXNET3State *s = opaque;
2551 PCIDevice *d = PCI_DEVICE(s);
2552
2553 net_tx_pkt_init(&s->tx_pkt, PCI_DEVICE(s),
2554 s->max_tx_frags, s->peer_has_vhdr);
2555 net_rx_pkt_init(&s->rx_pkt, s->peer_has_vhdr);
2556
2557 if (s->msix_used) {
2558 if (!vmxnet3_use_msix_vectors(s, VMXNET3_MAX_INTRS)) {
2559 VMW_WRPRN("Failed to re-use MSI-X vectors");
2560 msix_uninit(d, &s->msix_bar, &s->msix_bar);
2561 s->msix_used = false;
2562 return -1;
2563 }
2564 }
2565
2566 vmxnet3_validate_queues(s);
2567 vmxnet3_validate_interrupts(s);
2568
2569 return 0;
2570 }
2571
2572 static const VMStateInfo rxq_descr_info = {
2573 .name = "rxq_descr",
2574 .get = vmxnet3_get_rxq_descr,
2575 .put = vmxnet3_put_rxq_descr
2576 };
2577
2578 static int vmxnet3_get_int_state(QEMUFile *f, void *pv, size_t size)
2579 {
2580 Vmxnet3IntState *r = pv;
2581
2582 r->is_masked = qemu_get_byte(f);
2583 r->is_pending = qemu_get_byte(f);
2584 r->is_asserted = qemu_get_byte(f);
2585
2586 return 0;
2587 }
2588
2589 static void vmxnet3_put_int_state(QEMUFile *f, void *pv, size_t size)
2590 {
2591 Vmxnet3IntState *r = pv;
2592
2593 qemu_put_byte(f, r->is_masked);
2594 qemu_put_byte(f, r->is_pending);
2595 qemu_put_byte(f, r->is_asserted);
2596 }
2597
2598 static const VMStateInfo int_state_info = {
2599 .name = "int_state",
2600 .get = vmxnet3_get_int_state,
2601 .put = vmxnet3_put_int_state
2602 };
2603
2604 static bool vmxnet3_vmstate_need_pcie_device(void *opaque)
2605 {
2606 VMXNET3State *s = VMXNET3(opaque);
2607
2608 return !(s->compat_flags & VMXNET3_COMPAT_FLAG_DISABLE_PCIE);
2609 }
2610
2611 static bool vmxnet3_vmstate_test_pci_device(void *opaque, int version_id)
2612 {
2613 return !vmxnet3_vmstate_need_pcie_device(opaque);
2614 }
2615
2616 static const VMStateDescription vmstate_vmxnet3_pcie_device = {
2617 .name = "vmxnet3/pcie",
2618 .version_id = 1,
2619 .minimum_version_id = 1,
2620 .needed = vmxnet3_vmstate_need_pcie_device,
2621 .fields = (VMStateField[]) {
2622 VMSTATE_PCIE_DEVICE(parent_obj, VMXNET3State),
2623 VMSTATE_END_OF_LIST()
2624 }
2625 };
2626
2627 static const VMStateDescription vmstate_vmxnet3 = {
2628 .name = "vmxnet3",
2629 .version_id = 1,
2630 .minimum_version_id = 1,
2631 .pre_save = vmxnet3_pre_save,
2632 .post_load = vmxnet3_post_load,
2633 .fields = (VMStateField[]) {
2634 VMSTATE_STRUCT_TEST(parent_obj, VMXNET3State,
2635 vmxnet3_vmstate_test_pci_device, 0,
2636 vmstate_pci_device, PCIDevice),
2637 VMSTATE_BOOL(rx_packets_compound, VMXNET3State),
2638 VMSTATE_BOOL(rx_vlan_stripping, VMXNET3State),
2639 VMSTATE_BOOL(lro_supported, VMXNET3State),
2640 VMSTATE_UINT32(rx_mode, VMXNET3State),
2641 VMSTATE_UINT32(mcast_list_len, VMXNET3State),
2642 VMSTATE_UINT32(mcast_list_buff_size, VMXNET3State),
2643 VMSTATE_UINT32_ARRAY(vlan_table, VMXNET3State, VMXNET3_VFT_SIZE),
2644 VMSTATE_UINT32(mtu, VMXNET3State),
2645 VMSTATE_UINT16(max_rx_frags, VMXNET3State),
2646 VMSTATE_UINT32(max_tx_frags, VMXNET3State),
2647 VMSTATE_UINT8(event_int_idx, VMXNET3State),
2648 VMSTATE_BOOL(auto_int_masking, VMXNET3State),
2649 VMSTATE_UINT8(txq_num, VMXNET3State),
2650 VMSTATE_UINT8(rxq_num, VMXNET3State),
2651 VMSTATE_UINT32(device_active, VMXNET3State),
2652 VMSTATE_UINT32(last_command, VMXNET3State),
2653 VMSTATE_UINT32(link_status_and_speed, VMXNET3State),
2654 VMSTATE_UINT32(temp_mac, VMXNET3State),
2655 VMSTATE_UINT64(drv_shmem, VMXNET3State),
2656 VMSTATE_UINT64(temp_shared_guest_driver_memory, VMXNET3State),
2657
2658 VMSTATE_ARRAY(txq_descr, VMXNET3State,
2659 VMXNET3_DEVICE_MAX_TX_QUEUES, 0, txq_descr_info,
2660 Vmxnet3TxqDescr),
2661 VMSTATE_ARRAY(rxq_descr, VMXNET3State,
2662 VMXNET3_DEVICE_MAX_RX_QUEUES, 0, rxq_descr_info,
2663 Vmxnet3RxqDescr),
2664 VMSTATE_ARRAY(interrupt_states, VMXNET3State, VMXNET3_MAX_INTRS,
2665 0, int_state_info, Vmxnet3IntState),
2666
2667 VMSTATE_END_OF_LIST()
2668 },
2669 .subsections = (const VMStateDescription*[]) {
2670 &vmxstate_vmxnet3_mcast_list,
2671 &vmstate_vmxnet3_pcie_device,
2672 NULL
2673 }
2674 };
2675
2676 static Property vmxnet3_properties[] = {
2677 DEFINE_NIC_PROPERTIES(VMXNET3State, conf),
2678 DEFINE_PROP_BIT("x-old-msi-offsets", VMXNET3State, compat_flags,
2679 VMXNET3_COMPAT_FLAG_OLD_MSI_OFFSETS_BIT, false),
2680 DEFINE_PROP_BIT("x-disable-pcie", VMXNET3State, compat_flags,
2681 VMXNET3_COMPAT_FLAG_DISABLE_PCIE_BIT, false),
2682 DEFINE_PROP_END_OF_LIST(),
2683 };
2684
2685 static void vmxnet3_realize(DeviceState *qdev, Error **errp)
2686 {
2687 VMXNET3Class *vc = VMXNET3_DEVICE_GET_CLASS(qdev);
2688 PCIDevice *pci_dev = PCI_DEVICE(qdev);
2689 VMXNET3State *s = VMXNET3(qdev);
2690
2691 if (!(s->compat_flags & VMXNET3_COMPAT_FLAG_DISABLE_PCIE)) {
2692 pci_dev->cap_present |= QEMU_PCI_CAP_EXPRESS;
2693 }
2694
2695 vc->parent_dc_realize(qdev, errp);
2696 }
2697
2698 static void vmxnet3_class_init(ObjectClass *class, void *data)
2699 {
2700 DeviceClass *dc = DEVICE_CLASS(class);
2701 PCIDeviceClass *c = PCI_DEVICE_CLASS(class);
2702 VMXNET3Class *vc = VMXNET3_DEVICE_CLASS(class);
2703
2704 c->realize = vmxnet3_pci_realize;
2705 c->exit = vmxnet3_pci_uninit;
2706 c->vendor_id = PCI_VENDOR_ID_VMWARE;
2707 c->device_id = PCI_DEVICE_ID_VMWARE_VMXNET3;
2708 c->revision = PCI_DEVICE_ID_VMWARE_VMXNET3_REVISION;
2709 c->romfile = "efi-vmxnet3.rom";
2710 c->class_id = PCI_CLASS_NETWORK_ETHERNET;
2711 c->subsystem_vendor_id = PCI_VENDOR_ID_VMWARE;
2712 c->subsystem_id = PCI_DEVICE_ID_VMWARE_VMXNET3;
2713 vc->parent_dc_realize = dc->realize;
2714 dc->realize = vmxnet3_realize;
2715 dc->desc = "VMWare Paravirtualized Ethernet v3";
2716 dc->reset = vmxnet3_qdev_reset;
2717 dc->vmsd = &vmstate_vmxnet3;
2718 dc->props = vmxnet3_properties;
2719 set_bit(DEVICE_CATEGORY_NETWORK, dc->categories);
2720 }
2721
2722 static const TypeInfo vmxnet3_info = {
2723 .name = TYPE_VMXNET3,
2724 .parent = TYPE_PCI_DEVICE,
2725 .class_size = sizeof(VMXNET3Class),
2726 .instance_size = sizeof(VMXNET3State),
2727 .class_init = vmxnet3_class_init,
2728 .instance_init = vmxnet3_instance_init,
2729 };
2730
2731 static void vmxnet3_register_types(void)
2732 {
2733 VMW_CBPRN("vmxnet3_register_types called...");
2734 type_register_static(&vmxnet3_info);
2735 }
2736
2737 type_init(vmxnet3_register_types)
QEmu