4 * Copyright (c) 2010 Isaku Yamahata <yamahata at valinux co jp>
5 * VA Linux Systems Japan K.K.
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License along
18 * with this program; if not, see <http://www.gnu.org/licenses/>.
22 #include "pci_bridge.h"
26 #include "pci_internals.h"
27 #include "pcie_regs.h"
31 # define PCIE_DPRINTF(fmt, ...) \
32 fprintf(stderr, "%s:%d " fmt, __func__, __LINE__, ## __VA_ARGS__)
34 # define PCIE_DPRINTF(fmt, ...) do {} while (0)
36 #define PCIE_DEV_PRINTF(dev, fmt, ...) \
37 PCIE_DPRINTF("%s:%x "fmt, (dev)->name, (dev)->devfn, ## __VA_ARGS__)
39 /* From 6.2.7 Error Listing and Rules. Table 6-2, 6-3 and 6-4 */
40 static uint32_t pcie_aer_uncor_default_severity(uint32_t status)
43 case PCI_ERR_UNC_INTN:
46 case PCI_ERR_UNC_RX_OVER:
48 case PCI_ERR_UNC_MALF_TLP:
49 return PCI_ERR_ROOT_CMD_FATAL_EN;
50 case PCI_ERR_UNC_POISON_TLP:
51 case PCI_ERR_UNC_ECRC:
52 case PCI_ERR_UNC_UNSUP:
53 case PCI_ERR_UNC_COMP_TIME:
54 case PCI_ERR_UNC_COMP_ABORT:
55 case PCI_ERR_UNC_UNX_COMP:
56 case PCI_ERR_UNC_ACSV:
57 case PCI_ERR_UNC_MCBTLP:
58 case PCI_ERR_UNC_ATOP_EBLOCKED:
59 case PCI_ERR_UNC_TLP_PRF_BLOCKED:
60 return PCI_ERR_ROOT_CMD_NONFATAL_EN;
65 return PCI_ERR_ROOT_CMD_FATAL_EN;
68 static int aer_log_add_err(PCIEAERLog *aer_log, const PCIEAERErr *err)
70 if (aer_log->log_num == aer_log->log_max) {
73 memcpy(&aer_log->log[aer_log->log_num], err, sizeof *err);
78 static void aer_log_del_err(PCIEAERLog *aer_log, PCIEAERErr *err)
80 assert(aer_log->log_num);
81 *err = aer_log->log[0];
83 memmove(&aer_log->log[0], &aer_log->log[1],
84 aer_log->log_num * sizeof *err);
87 static void aer_log_clear_all_err(PCIEAERLog *aer_log)
92 int pcie_aer_init(PCIDevice *dev, uint16_t offset)
94 PCIExpressDevice *exp;
96 pcie_add_capability(dev, PCI_EXT_CAP_ID_ERR, PCI_ERR_VER,
97 offset, PCI_ERR_SIZEOF);
99 exp->aer_cap = offset;
101 /* log_max is property */
102 if (dev->exp.aer_log.log_max == PCIE_AER_LOG_MAX_UNSET) {
103 dev->exp.aer_log.log_max = PCIE_AER_LOG_MAX_DEFAULT;
105 /* clip down the value to avoid unreasobale memory usage */
106 if (dev->exp.aer_log.log_max > PCIE_AER_LOG_MAX_LIMIT) {
109 dev->exp.aer_log.log = qemu_mallocz(sizeof dev->exp.aer_log.log[0] *
110 dev->exp.aer_log.log_max);
112 pci_set_long(dev->w1cmask + offset + PCI_ERR_UNCOR_STATUS,
113 PCI_ERR_UNC_SUPPORTED);
115 pci_set_long(dev->config + offset + PCI_ERR_UNCOR_SEVER,
116 PCI_ERR_UNC_SEVERITY_DEFAULT);
117 pci_set_long(dev->wmask + offset + PCI_ERR_UNCOR_SEVER,
118 PCI_ERR_UNC_SUPPORTED);
120 pci_long_test_and_set_mask(dev->w1cmask + offset + PCI_ERR_COR_STATUS,
123 pci_set_long(dev->config + offset + PCI_ERR_COR_MASK,
124 PCI_ERR_COR_MASK_DEFAULT);
125 pci_set_long(dev->wmask + offset + PCI_ERR_COR_MASK,
126 PCI_ERR_COR_SUPPORTED);
128 /* capabilities and control. multiple header logging is supported */
129 if (dev->exp.aer_log.log_max > 0) {
130 pci_set_long(dev->config + offset + PCI_ERR_CAP,
131 PCI_ERR_CAP_ECRC_GENC | PCI_ERR_CAP_ECRC_CHKC |
133 pci_set_long(dev->wmask + offset + PCI_ERR_CAP,
134 PCI_ERR_CAP_ECRC_GENE | PCI_ERR_CAP_ECRC_CHKE |
137 pci_set_long(dev->config + offset + PCI_ERR_CAP,
138 PCI_ERR_CAP_ECRC_GENC | PCI_ERR_CAP_ECRC_CHKC);
139 pci_set_long(dev->wmask + offset + PCI_ERR_CAP,
140 PCI_ERR_CAP_ECRC_GENE | PCI_ERR_CAP_ECRC_CHKE);
143 switch (pcie_cap_get_type(dev)) {
144 case PCI_EXP_TYPE_ROOT_PORT:
145 /* this case will be set by pcie_aer_root_init() */
147 case PCI_EXP_TYPE_DOWNSTREAM:
148 case PCI_EXP_TYPE_UPSTREAM:
149 pci_word_test_and_set_mask(dev->wmask + PCI_BRIDGE_CONTROL,
150 PCI_BRIDGE_CTL_SERR);
151 pci_long_test_and_set_mask(dev->w1cmask + PCI_STATUS,
152 PCI_SEC_STATUS_RCV_SYSTEM_ERROR);
161 void pcie_aer_exit(PCIDevice *dev)
163 qemu_free(dev->exp.aer_log.log);
166 static void pcie_aer_update_uncor_status(PCIDevice *dev)
168 uint8_t *aer_cap = dev->config + dev->exp.aer_cap;
169 PCIEAERLog *aer_log = &dev->exp.aer_log;
172 for (i = 0; i < aer_log->log_num; i++) {
173 pci_long_test_and_set_mask(aer_cap + PCI_ERR_UNCOR_STATUS,
174 dev->exp.aer_log.log[i].status);
180 * true: error message needs to be sent up
181 * false: error message is masked
183 * 6.2.6 Error Message Control
185 * all pci express devices part
188 pcie_aer_msg_alldev(PCIDevice *dev, const PCIEAERMsg *msg)
190 if (!(pcie_aer_msg_is_uncor(msg) &&
191 (pci_get_word(dev->config + PCI_COMMAND) & PCI_COMMAND_SERR))) {
195 /* Signaled System Error
197 * 7.5.1.1 Command register
200 * When Set, this bit enables reporting of Non-fatal and Fatal
201 * errors detected by the Function to the Root Complex. Note that
202 * errors are reported if enabled either through this bit or through
203 * the PCI Express specific bits in the Device Control register (see
206 pci_word_test_and_set_mask(dev->config + PCI_STATUS,
207 PCI_STATUS_SIG_SYSTEM_ERROR);
209 if (!(msg->severity &
210 pci_get_word(dev->config + dev->exp.exp_cap + PCI_EXP_DEVCTL))) {
214 /* send up error message */
220 * true: error message is sent up
221 * false: error message is masked
223 * 6.2.6 Error Message Control
225 * virtual pci bridge part
227 static bool pcie_aer_msg_vbridge(PCIDevice *dev, const PCIEAERMsg *msg)
229 uint16_t bridge_control = pci_get_word(dev->config + PCI_BRIDGE_CONTROL);
231 if (pcie_aer_msg_is_uncor(msg)) {
232 /* Received System Error */
233 pci_word_test_and_set_mask(dev->config + PCI_SEC_STATUS,
234 PCI_SEC_STATUS_RCV_SYSTEM_ERROR);
237 if (!(bridge_control & PCI_BRIDGE_CTL_SERR)) {
243 void pcie_aer_root_set_vector(PCIDevice *dev, unsigned int vector)
245 uint8_t *aer_cap = dev->config + dev->exp.aer_cap;
246 assert(vector < PCI_ERR_ROOT_IRQ_MAX);
247 pci_long_test_and_clear_mask(aer_cap + PCI_ERR_ROOT_STATUS,
249 pci_long_test_and_set_mask(aer_cap + PCI_ERR_ROOT_STATUS,
250 vector << PCI_ERR_ROOT_IRQ_SHIFT);
253 static unsigned int pcie_aer_root_get_vector(PCIDevice *dev)
255 uint8_t *aer_cap = dev->config + dev->exp.aer_cap;
256 uint32_t root_status = pci_get_long(aer_cap + PCI_ERR_ROOT_STATUS);
257 return (root_status & PCI_ERR_ROOT_IRQ) >> PCI_ERR_ROOT_IRQ_SHIFT;
260 /* Given a status register, get corresponding bits in the command register */
261 static uint32_t pcie_aer_status_to_cmd(uint32_t status)
264 if (status & PCI_ERR_ROOT_COR_RCV) {
265 cmd |= PCI_ERR_ROOT_CMD_COR_EN;
267 if (status & PCI_ERR_ROOT_NONFATAL_RCV) {
268 cmd |= PCI_ERR_ROOT_CMD_NONFATAL_EN;
270 if (status & PCI_ERR_ROOT_FATAL_RCV) {
271 cmd |= PCI_ERR_ROOT_CMD_FATAL_EN;
277 * 6.2.6 Error Message Control
281 static void pcie_aer_msg_root_port(PCIDevice *dev, const PCIEAERMsg *msg)
286 uint32_t root_status, prev_status;
288 cmd = pci_get_word(dev->config + PCI_COMMAND);
289 aer_cap = dev->config + dev->exp.aer_cap;
290 root_cmd = pci_get_long(aer_cap + PCI_ERR_ROOT_COMMAND);
291 prev_status = root_status = pci_get_long(aer_cap + PCI_ERR_ROOT_STATUS);
293 if (cmd & PCI_COMMAND_SERR) {
296 * The way to report System Error is platform specific and
297 * it isn't implemented in qemu right now.
298 * So just discard the error for now.
299 * OS which cares of aer would receive errors via
300 * native aer mechanims, so this wouldn't matter.
304 /* Errro Message Received: Root Error Status register */
305 switch (msg->severity) {
306 case PCI_ERR_ROOT_CMD_COR_EN:
307 if (root_status & PCI_ERR_ROOT_COR_RCV) {
308 root_status |= PCI_ERR_ROOT_MULTI_COR_RCV;
310 pci_set_word(aer_cap + PCI_ERR_ROOT_COR_SRC, msg->source_id);
312 root_status |= PCI_ERR_ROOT_COR_RCV;
314 case PCI_ERR_ROOT_CMD_NONFATAL_EN:
315 root_status |= PCI_ERR_ROOT_NONFATAL_RCV;
317 case PCI_ERR_ROOT_CMD_FATAL_EN:
318 if (!(root_status & PCI_ERR_ROOT_UNCOR_RCV)) {
319 root_status |= PCI_ERR_ROOT_FIRST_FATAL;
321 root_status |= PCI_ERR_ROOT_FATAL_RCV;
327 if (pcie_aer_msg_is_uncor(msg)) {
328 if (root_status & PCI_ERR_ROOT_UNCOR_RCV) {
329 root_status |= PCI_ERR_ROOT_MULTI_UNCOR_RCV;
331 pci_set_word(aer_cap + PCI_ERR_ROOT_SRC, msg->source_id);
333 root_status |= PCI_ERR_ROOT_UNCOR_RCV;
335 pci_set_long(aer_cap + PCI_ERR_ROOT_STATUS, root_status);
337 /* 6.2.4.1.2 Interrupt Generation */
338 /* All the above did was set some bits in the status register.
339 * Specifically these that match message severity.
340 * The below code relies on this fact. */
341 if (!(root_cmd & msg->severity) ||
342 (pcie_aer_status_to_cmd(prev_status) & root_cmd)) {
343 /* Condition is not being set or was already true so nothing to do. */
347 if (msix_enabled(dev)) {
348 msix_notify(dev, pcie_aer_root_get_vector(dev));
349 } else if (msi_enabled(dev)) {
350 msi_notify(dev, pcie_aer_root_get_vector(dev));
352 qemu_set_irq(dev->irq[dev->exp.aer_intx], 1);
357 * 6.2.6 Error Message Control Figure 6-3
359 * Walk up the bus tree from the device, propagate the error message.
361 static void pcie_aer_msg(PCIDevice *dev, const PCIEAERMsg *msg)
366 if (!pci_is_express(dev)) {
368 /* TODO: Shouldn't we set PCI_STATUS_SIG_SYSTEM_ERROR?
369 * Consider e.g. a PCI bridge above a PCI Express device. */
373 type = pcie_cap_get_type(dev);
374 if ((type == PCI_EXP_TYPE_ROOT_PORT ||
375 type == PCI_EXP_TYPE_UPSTREAM ||
376 type == PCI_EXP_TYPE_DOWNSTREAM) &&
377 !pcie_aer_msg_vbridge(dev, msg)) {
380 if (!pcie_aer_msg_alldev(dev, msg)) {
383 if (type == PCI_EXP_TYPE_ROOT_PORT) {
384 pcie_aer_msg_root_port(dev, msg);
385 /* Root port can notify system itself,
386 or send the error message to root complex event collector. */
388 * if root port is associated with an event collector,
389 * return the root complex event collector here.
390 * For now root complex event collector isn't supported.
394 dev = pci_bridge_get_device(dev->bus);
398 static void pcie_aer_update_log(PCIDevice *dev, const PCIEAERErr *err)
400 uint8_t *aer_cap = dev->config + dev->exp.aer_cap;
401 uint8_t first_bit = ffs(err->status) - 1;
402 uint32_t errcap = pci_get_long(aer_cap + PCI_ERR_CAP);
406 assert(err->status & (err->status - 1));
408 errcap &= ~(PCI_ERR_CAP_FEP_MASK | PCI_ERR_CAP_TLP);
409 errcap |= PCI_ERR_CAP_FEP(first_bit);
411 if (err->flags & PCIE_AER_ERR_HEADER_VALID) {
412 for (i = 0; i < ARRAY_SIZE(err->header); ++i) {
413 /* 7.10.8 Header Log Register */
414 uint8_t *header_log =
415 aer_cap + PCI_ERR_HEADER_LOG + i * sizeof err->header[0];
416 cpu_to_be32wu((uint32_t*)header_log, err->header[i]);
419 assert(!(err->flags & PCIE_AER_ERR_TLP_PREFIX_PRESENT));
420 memset(aer_cap + PCI_ERR_HEADER_LOG, 0, PCI_ERR_HEADER_LOG_SIZE);
423 if ((err->flags & PCIE_AER_ERR_TLP_PREFIX_PRESENT) &&
424 (pci_get_long(dev->config + dev->exp.exp_cap + PCI_EXP_DEVCTL2) &
425 PCI_EXP_DEVCAP2_EETLPP)) {
426 for (i = 0; i < ARRAY_SIZE(err->prefix); ++i) {
427 /* 7.10.12 tlp prefix log register */
428 uint8_t *prefix_log =
429 aer_cap + PCI_ERR_TLP_PREFIX_LOG + i * sizeof err->prefix[0];
430 cpu_to_be32wu((uint32_t*)prefix_log, err->prefix[i]);
432 errcap |= PCI_ERR_CAP_TLP;
434 memset(aer_cap + PCI_ERR_TLP_PREFIX_LOG, 0,
435 PCI_ERR_TLP_PREFIX_LOG_SIZE);
437 pci_set_long(aer_cap + PCI_ERR_CAP, errcap);
440 static void pcie_aer_clear_log(PCIDevice *dev)
442 uint8_t *aer_cap = dev->config + dev->exp.aer_cap;
444 pci_long_test_and_clear_mask(aer_cap + PCI_ERR_CAP,
445 PCI_ERR_CAP_FEP_MASK | PCI_ERR_CAP_TLP);
447 memset(aer_cap + PCI_ERR_HEADER_LOG, 0, PCI_ERR_HEADER_LOG_SIZE);
448 memset(aer_cap + PCI_ERR_TLP_PREFIX_LOG, 0, PCI_ERR_TLP_PREFIX_LOG_SIZE);
451 static void pcie_aer_clear_error(PCIDevice *dev)
453 uint8_t *aer_cap = dev->config + dev->exp.aer_cap;
454 uint32_t errcap = pci_get_long(aer_cap + PCI_ERR_CAP);
455 PCIEAERLog *aer_log = &dev->exp.aer_log;
458 if (!(errcap & PCI_ERR_CAP_MHRE) || !aer_log->log_num) {
459 pcie_aer_clear_log(dev);
464 * If more errors are queued, set corresponding bits in uncorrectable
466 * We emulate uncorrectable error status register as W1CS.
467 * So set bit in uncorrectable error status here again for multiple
468 * error recording support.
470 * 6.2.4.2 Multiple Error Handling(Advanced Error Reporting Capability)
472 pcie_aer_update_uncor_status(dev);
474 aer_log_del_err(aer_log, &err);
475 pcie_aer_update_log(dev, &err);
478 static int pcie_aer_record_error(PCIDevice *dev,
479 const PCIEAERErr *err)
481 uint8_t *aer_cap = dev->config + dev->exp.aer_cap;
482 uint32_t errcap = pci_get_long(aer_cap + PCI_ERR_CAP);
483 int fep = PCI_ERR_CAP_FEP(errcap);
486 assert(err->status & (err->status - 1));
488 if (errcap & PCI_ERR_CAP_MHRE &&
489 (pci_get_long(aer_cap + PCI_ERR_UNCOR_STATUS) & (1U << fep))) {
490 /* Not first error. queue error */
491 if (aer_log_add_err(&dev->exp.aer_log, err) < 0) {
498 pcie_aer_update_log(dev, err);
502 typedef struct PCIEAERInject {
505 const PCIEAERErr *err;
508 uint32_t error_status;
509 bool unsupported_request;
514 static bool pcie_aer_inject_cor_error(PCIEAERInject *inj,
515 uint32_t uncor_status,
516 bool is_advisory_nonfatal)
518 PCIDevice *dev = inj->dev;
520 inj->devsta |= PCI_EXP_DEVSTA_CED;
521 if (inj->unsupported_request) {
522 inj->devsta |= PCI_EXP_DEVSTA_URD;
524 pci_set_word(dev->config + dev->exp.exp_cap + PCI_EXP_DEVSTA, inj->devsta);
528 pci_long_test_and_set_mask(inj->aer_cap + PCI_ERR_COR_STATUS,
530 mask = pci_get_long(inj->aer_cap + PCI_ERR_COR_MASK);
531 if (mask & inj->error_status) {
534 if (is_advisory_nonfatal) {
535 uint32_t uncor_mask =
536 pci_get_long(inj->aer_cap + PCI_ERR_UNCOR_MASK);
537 if (!(uncor_mask & uncor_status)) {
538 inj->log_overflow = !!pcie_aer_record_error(dev, inj->err);
540 pci_long_test_and_set_mask(inj->aer_cap + PCI_ERR_UNCOR_STATUS,
545 if (inj->unsupported_request && !(inj->devctl & PCI_EXP_DEVCTL_URRE)) {
548 if (!(inj->devctl & PCI_EXP_DEVCTL_CERE)) {
552 inj->msg.severity = PCI_ERR_ROOT_CMD_COR_EN;
556 static bool pcie_aer_inject_uncor_error(PCIEAERInject *inj, bool is_fatal)
558 PCIDevice *dev = inj->dev;
562 inj->devsta |= PCI_EXP_DEVSTA_FED;
564 inj->devsta |= PCI_EXP_DEVSTA_NFED;
566 if (inj->unsupported_request) {
567 inj->devsta |= PCI_EXP_DEVSTA_URD;
569 pci_set_long(dev->config + dev->exp.exp_cap + PCI_EXP_DEVSTA, inj->devsta);
572 uint32_t mask = pci_get_long(inj->aer_cap + PCI_ERR_UNCOR_MASK);
573 if (mask & inj->error_status) {
574 pci_long_test_and_set_mask(inj->aer_cap + PCI_ERR_UNCOR_STATUS,
579 inj->log_overflow = !!pcie_aer_record_error(dev, inj->err);
580 pci_long_test_and_set_mask(inj->aer_cap + PCI_ERR_UNCOR_STATUS,
584 cmd = pci_get_word(dev->config + PCI_COMMAND);
585 if (inj->unsupported_request &&
586 !(inj->devctl & PCI_EXP_DEVCTL_URRE) && !(cmd & PCI_COMMAND_SERR)) {
590 if (!((cmd & PCI_COMMAND_SERR) ||
591 (inj->devctl & PCI_EXP_DEVCTL_FERE))) {
594 inj->msg.severity = PCI_ERR_ROOT_CMD_FATAL_EN;
596 if (!((cmd & PCI_COMMAND_SERR) ||
597 (inj->devctl & PCI_EXP_DEVCTL_NFERE))) {
600 inj->msg.severity = PCI_ERR_ROOT_CMD_NONFATAL_EN;
606 * non-Function specific error must be recorded in all functions.
607 * It is the responsibility of the caller of this function.
608 * It is also caller's responsiblity to determine which function should
611 * 6.2.4 Error Logging
612 * 6.2.5 Sqeunce of Device Error Signaling and Logging Operations
613 * table 6-2: Flowchard Showing Sequence of Device Error Signaling and Logging
616 int pcie_aer_inject_error(PCIDevice *dev, const PCIEAERErr *err)
618 uint8_t *aer_cap = NULL;
621 uint32_t error_status = err->status;
624 if (!pci_is_express(dev)) {
628 if (err->flags & PCIE_AER_ERR_IS_CORRECTABLE) {
629 error_status &= PCI_ERR_COR_SUPPORTED;
631 error_status &= PCI_ERR_UNC_SUPPORTED;
634 /* invalid status bit. one and only one bit must be set */
635 if (!error_status || (error_status & (error_status - 1))) {
639 if (dev->exp.aer_cap) {
640 uint8_t *exp_cap = dev->config + dev->exp.exp_cap;
641 aer_cap = dev->config + dev->exp.aer_cap;
642 devctl = pci_get_long(exp_cap + PCI_EXP_DEVCTL);
643 devsta = pci_get_long(exp_cap + PCI_EXP_DEVSTA);
647 inj.aer_cap = aer_cap;
651 inj.error_status = error_status;
652 inj.unsupported_request = !(err->flags & PCIE_AER_ERR_IS_CORRECTABLE) &&
653 err->status == PCI_ERR_UNC_UNSUP;
654 inj.log_overflow = false;
656 if (err->flags & PCIE_AER_ERR_IS_CORRECTABLE) {
657 if (!pcie_aer_inject_cor_error(&inj, 0, false)) {
662 pcie_aer_uncor_default_severity(error_status) ==
663 PCI_ERR_ROOT_CMD_FATAL_EN;
666 error_status & pci_get_long(aer_cap + PCI_ERR_UNCOR_SEVER);
668 if (!is_fatal && (err->flags & PCIE_AER_ERR_MAYBE_ADVISORY)) {
669 inj.error_status = PCI_ERR_COR_ADV_NONFATAL;
670 if (!pcie_aer_inject_cor_error(&inj, error_status, true)) {
674 if (!pcie_aer_inject_uncor_error(&inj, is_fatal)) {
680 /* send up error message */
681 inj.msg.source_id = err->source_id;
682 pcie_aer_msg(dev, &inj.msg);
684 if (inj.log_overflow) {
685 PCIEAERErr header_log_overflow = {
686 .status = PCI_ERR_COR_HL_OVERFLOW,
687 .flags = PCIE_AER_ERR_IS_CORRECTABLE,
689 int ret = pcie_aer_inject_error(dev, &header_log_overflow);
695 void pcie_aer_write_config(PCIDevice *dev,
696 uint32_t addr, uint32_t val, int len)
698 uint8_t *aer_cap = dev->config + dev->exp.aer_cap;
699 uint32_t errcap = pci_get_long(aer_cap + PCI_ERR_CAP);
700 uint32_t first_error = 1U << PCI_ERR_CAP_FEP(errcap);
701 uint32_t uncorsta = pci_get_long(aer_cap + PCI_ERR_UNCOR_STATUS);
703 /* uncorrectable error */
704 if (!(uncorsta & first_error)) {
705 /* the bit that corresponds to the first error is cleared */
706 pcie_aer_clear_error(dev);
707 } else if (errcap & PCI_ERR_CAP_MHRE) {
708 /* When PCI_ERR_CAP_MHRE is enabled and the first error isn't cleared
709 * nothing should happen. So we have to revert the modification to
712 pcie_aer_update_uncor_status(dev);
714 /* capability & control
715 * PCI_ERR_CAP_MHRE might be cleared, so clear of header log.
717 aer_log_clear_all_err(&dev->exp.aer_log);
721 void pcie_aer_root_init(PCIDevice *dev)
723 uint16_t pos = dev->exp.aer_cap;
725 pci_set_long(dev->wmask + pos + PCI_ERR_ROOT_COMMAND,
726 PCI_ERR_ROOT_CMD_EN_MASK);
727 pci_set_long(dev->w1cmask + pos + PCI_ERR_ROOT_STATUS,
728 PCI_ERR_ROOT_STATUS_REPORT_MASK);
731 void pcie_aer_root_reset(PCIDevice *dev)
733 uint8_t* aer_cap = dev->config + dev->exp.aer_cap;
735 pci_set_long(aer_cap + PCI_ERR_ROOT_COMMAND, 0);
738 * Advanced Error Interrupt Message Number in Root Error Status Register
739 * must be updated by chip dependent code because it's chip dependent
740 * which number is used.
744 void pcie_aer_root_write_config(PCIDevice *dev,
745 uint32_t addr, uint32_t val, int len,
746 uint32_t root_cmd_prev)
748 uint8_t *aer_cap = dev->config + dev->exp.aer_cap;
749 uint32_t root_status = pci_get_long(aer_cap + PCI_ERR_ROOT_STATUS);
750 uint32_t enabled_cmd = pcie_aer_status_to_cmd(root_status);
751 uint32_t root_cmd = pci_get_long(aer_cap + PCI_ERR_ROOT_COMMAND);
752 /* 6.2.4.1.2 Interrupt Generation */
753 if (!msix_enabled(dev) && !msi_enabled(dev)) {
754 qemu_set_irq(dev->irq[dev->exp.aer_intx], !!(root_cmd & enabled_cmd));
758 if ((root_cmd_prev & enabled_cmd) || !(root_cmd & enabled_cmd)) {
759 /* Send MSI on transition from false to true. */
763 if (msix_enabled(dev)) {
764 msix_notify(dev, pcie_aer_root_get_vector(dev));
765 } else if (msi_enabled(dev)) {
766 msi_notify(dev, pcie_aer_root_get_vector(dev));
772 static const VMStateDescription vmstate_pcie_aer_err = {
773 .name = "PCIE_AER_ERROR",
775 .minimum_version_id = 1,
776 .minimum_version_id_old = 1,
777 .fields = (VMStateField[]) {
778 VMSTATE_UINT32(status, PCIEAERErr),
779 VMSTATE_UINT16(source_id, PCIEAERErr),
780 VMSTATE_UINT16(flags, PCIEAERErr),
781 VMSTATE_UINT32_ARRAY(header, PCIEAERErr, 4),
782 VMSTATE_UINT32_ARRAY(prefix, PCIEAERErr, 4),
783 VMSTATE_END_OF_LIST()
787 #define VMSTATE_PCIE_AER_ERRS(_field, _state, _field_num, _vmsd, _type) { \
788 .name = (stringify(_field)), \
790 .num_offset = vmstate_offset_value(_state, _field_num, uint16_t), \
791 .size = sizeof(_type), \
793 .flags = VMS_POINTER | VMS_VARRAY_UINT16 | VMS_STRUCT, \
794 .offset = vmstate_offset_pointer(_state, _field, _type), \
797 const VMStateDescription vmstate_pcie_aer_log = {
798 .name = "PCIE_AER_ERROR_LOG",
800 .minimum_version_id = 1,
801 .minimum_version_id_old = 1,
802 .fields = (VMStateField[]) {
803 VMSTATE_UINT16(log_num, PCIEAERLog),
804 VMSTATE_UINT16(log_max, PCIEAERLog),
805 VMSTATE_PCIE_AER_ERRS(log, PCIEAERLog, log_num,
806 vmstate_pcie_aer_err, PCIEAERErr),
807 VMSTATE_END_OF_LIST()