Lines Matching +full:msi +full:- +full:x
1 // SPDX-License-Identifier: GPL-2.0
3 * PCI Message Signaled Interrupt (MSI)
5 * Copyright (C) 2003-2004 Intel
18 #include <linux/msi.h>
39 domain = dev_get_msi_domain(&dev->dev); in pci_msi_setup_msi_irqs()
41 return msi_domain_alloc_irqs(domain, &dev->dev, nvec); in pci_msi_setup_msi_irqs()
50 domain = dev_get_msi_domain(&dev->dev); in pci_msi_teardown_msi_irqs()
52 msi_domain_free_irqs(domain, &dev->dev); in pci_msi_teardown_msi_irqs()
65 struct msi_controller *chip = dev->bus->msi; in arch_setup_msi_irq()
68 if (!chip || !chip->setup_irq) in arch_setup_msi_irq()
69 return -EINVAL; in arch_setup_msi_irq()
71 err = chip->setup_irq(chip, dev, desc); in arch_setup_msi_irq()
75 irq_set_chip_data(desc->irq, chip); in arch_setup_msi_irq()
84 if (!chip || !chip->teardown_irq) in arch_teardown_msi_irq()
87 chip->teardown_irq(chip, irq); in arch_teardown_msi_irq()
92 struct msi_controller *chip = dev->bus->msi; in arch_setup_msi_irqs()
96 if (chip && chip->setup_irqs) in arch_setup_msi_irqs()
97 return chip->setup_irqs(chip, dev, nvec, type); in arch_setup_msi_irqs()
99 * If an architecture wants to support multiple MSI, it needs to in arch_setup_msi_irqs()
110 return -ENOSPC; in arch_setup_msi_irqs()
117 * We have a default implementation available as a separate non-weak
126 if (entry->irq) in default_teardown_msi_irqs()
127 for (i = 0; i < entry->nvec_used; i++) in default_teardown_msi_irqs()
128 arch_teardown_msi_irq(entry->irq + i); in default_teardown_msi_irqs()
141 if (dev->msix_enabled) { in default_restore_msi_irq()
143 if (irq == entry->irq) in default_restore_msi_irq()
146 } else if (dev->msi_enabled) { in default_restore_msi_irq()
151 __pci_write_msi_msg(entry, &entry->msg); in default_restore_msi_irq()
159 static inline __attribute_const__ u32 msi_mask(unsigned x) in msi_mask() argument
162 if (x >= 5) in msi_mask()
164 return (1 << (1 << x)) - 1; in msi_mask()
168 * PCI 2.3 does not specify mask bits for each MSI interrupt. Attempting to
169 * mask all MSI interrupts by clearing the MSI enable bit does not work
175 u32 mask_bits = desc->masked; in __pci_msi_desc_mask_irq()
177 if (pci_msi_ignore_mask || !desc->msi_attrib.maskbit) in __pci_msi_desc_mask_irq()
182 pci_write_config_dword(msi_desc_to_pci_dev(desc), desc->mask_pos, in __pci_msi_desc_mask_irq()
190 desc->masked = __pci_msi_desc_mask_irq(desc, mask, flag); in msi_mask_irq()
195 return desc->mask_base + in pci_msix_desc_addr()
196 desc->msi_attrib.entry_nr * PCI_MSIX_ENTRY_SIZE; in pci_msix_desc_addr()
204 * of MSI-X interrupts.
208 u32 mask_bits = desc->masked; in __pci_msix_desc_mask_irq()
223 desc->masked = __pci_msix_desc_mask_irq(desc, flag); in msix_mask_irq()
230 if (desc->msi_attrib.is_msix) { in msi_set_mask_bit()
232 readl(desc->mask_base); /* Flush write to device */ in msi_set_mask_bit()
234 unsigned offset = data->irq - desc->irq; in msi_set_mask_bit()
240 * pci_msi_mask_irq - Generic irq chip callback to mask PCI/MSI interrupts
250 * pci_msi_unmask_irq - Generic irq chip callback to unmask PCI/MSI interrupts
264 default_restore_msi_irq(dev, entry->irq); in default_restore_msi_irqs()
271 BUG_ON(dev->current_state != PCI_D0); in __pci_read_msi_msg()
273 if (entry->msi_attrib.is_msix) { in __pci_read_msi_msg()
276 msg->address_lo = readl(base + PCI_MSIX_ENTRY_LOWER_ADDR); in __pci_read_msi_msg()
277 msg->address_hi = readl(base + PCI_MSIX_ENTRY_UPPER_ADDR); in __pci_read_msi_msg()
278 msg->data = readl(base + PCI_MSIX_ENTRY_DATA); in __pci_read_msi_msg()
280 int pos = dev->msi_cap; in __pci_read_msi_msg()
284 &msg->address_lo); in __pci_read_msi_msg()
285 if (entry->msi_attrib.is_64) { in __pci_read_msi_msg()
287 &msg->address_hi); in __pci_read_msi_msg()
290 msg->address_hi = 0; in __pci_read_msi_msg()
293 msg->data = data; in __pci_read_msi_msg()
301 if (dev->current_state != PCI_D0 || pci_dev_is_disconnected(dev)) { in __pci_write_msi_msg()
303 } else if (entry->msi_attrib.is_msix) { in __pci_write_msi_msg()
306 writel(msg->address_lo, base + PCI_MSIX_ENTRY_LOWER_ADDR); in __pci_write_msi_msg()
307 writel(msg->address_hi, base + PCI_MSIX_ENTRY_UPPER_ADDR); in __pci_write_msi_msg()
308 writel(msg->data, base + PCI_MSIX_ENTRY_DATA); in __pci_write_msi_msg()
310 int pos = dev->msi_cap; in __pci_write_msi_msg()
315 msgctl |= entry->msi_attrib.multiple << 4; in __pci_write_msi_msg()
319 msg->address_lo); in __pci_write_msi_msg()
320 if (entry->msi_attrib.is_64) { in __pci_write_msi_msg()
322 msg->address_hi); in __pci_write_msi_msg()
324 msg->data); in __pci_write_msi_msg()
327 msg->data); in __pci_write_msi_msg()
330 entry->msg = *msg; in __pci_write_msi_msg()
343 struct list_head *msi_list = dev_to_msi_list(&dev->dev); in free_msi_irqs()
350 if (entry->irq) in free_msi_irqs()
351 for (i = 0; i < entry->nvec_used; i++) in free_msi_irqs()
352 BUG_ON(irq_has_action(entry->irq + i)); in free_msi_irqs()
357 if (entry->msi_attrib.is_msix) { in free_msi_irqs()
358 if (list_is_last(&entry->list, msi_list)) in free_msi_irqs()
359 iounmap(entry->mask_base); in free_msi_irqs()
362 list_del(&entry->list); in free_msi_irqs()
366 if (dev->msi_irq_groups) { in free_msi_irqs()
367 sysfs_remove_groups(&dev->dev.kobj, dev->msi_irq_groups); in free_msi_irqs()
368 msi_attrs = dev->msi_irq_groups[0]->attrs; in free_msi_irqs()
372 kfree(dev_attr->attr.name); in free_msi_irqs()
377 kfree(dev->msi_irq_groups[0]); in free_msi_irqs()
378 kfree(dev->msi_irq_groups); in free_msi_irqs()
379 dev->msi_irq_groups = NULL; in free_msi_irqs()
385 if (!(dev->dev_flags & PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG)) in pci_intx_for_msi()
394 if (!dev->msi_enabled) in __pci_restore_msi_state()
397 entry = irq_get_msi_desc(dev->irq); in __pci_restore_msi_state()
403 pci_read_config_word(dev, dev->msi_cap + PCI_MSI_FLAGS, &control); in __pci_restore_msi_state()
404 msi_mask_irq(entry, msi_mask(entry->msi_attrib.multi_cap), in __pci_restore_msi_state()
405 entry->masked); in __pci_restore_msi_state()
407 control |= (entry->msi_attrib.multiple << 4) | PCI_MSI_FLAGS_ENABLE; in __pci_restore_msi_state()
408 pci_write_config_word(dev, dev->msi_cap + PCI_MSI_FLAGS, control); in __pci_restore_msi_state()
415 if (!dev->msix_enabled) in __pci_restore_msix_state()
417 BUG_ON(list_empty(dev_to_msi_list(&dev->dev))); in __pci_restore_msix_state()
426 msix_mask_irq(entry, entry->masked); in __pci_restore_msix_state()
445 retval = kstrtoul(attr->attr.name, 10, &irq); in msi_mode_show()
452 entry->msi_attrib.is_msix ? "msix" : "msi"); in msi_mode_show()
454 return -ENODEV; in msi_mode_show()
465 int ret = -ENOMEM; in populate_msi_sysfs()
470 /* Determine how many msi entries we have */ in populate_msi_sysfs()
472 num_msi += entry->nvec_used; in populate_msi_sysfs()
476 /* Dynamically create the MSI attributes for the PCI device */ in populate_msi_sysfs()
479 return -ENOMEM; in populate_msi_sysfs()
481 for (i = 0; i < entry->nvec_used; i++) { in populate_msi_sysfs()
485 msi_attrs[count] = &msi_dev_attr->attr; in populate_msi_sysfs()
487 sysfs_attr_init(&msi_dev_attr->attr); in populate_msi_sysfs()
488 msi_dev_attr->attr.name = kasprintf(GFP_KERNEL, "%d", in populate_msi_sysfs()
489 entry->irq + i); in populate_msi_sysfs()
490 if (!msi_dev_attr->attr.name) in populate_msi_sysfs()
492 msi_dev_attr->attr.mode = S_IRUGO; in populate_msi_sysfs()
493 msi_dev_attr->show = msi_mode_show; in populate_msi_sysfs()
501 msi_irq_group->name = "msi_irqs"; in populate_msi_sysfs()
502 msi_irq_group->attrs = msi_attrs; in populate_msi_sysfs()
509 ret = sysfs_create_groups(&pdev->dev.kobj, msi_irq_groups); in populate_msi_sysfs()
512 pdev->msi_irq_groups = msi_irq_groups; in populate_msi_sysfs()
525 kfree(msi_attr->name); in populate_msi_sysfs()
545 /* MSI Entry Initialization */ in msi_setup_entry()
546 entry = alloc_msi_entry(&dev->dev, nvec, masks); in msi_setup_entry()
550 pci_read_config_word(dev, dev->msi_cap + PCI_MSI_FLAGS, &control); in msi_setup_entry()
552 entry->msi_attrib.is_msix = 0; in msi_setup_entry()
553 entry->msi_attrib.is_64 = !!(control & PCI_MSI_FLAGS_64BIT); in msi_setup_entry()
554 entry->msi_attrib.entry_nr = 0; in msi_setup_entry()
555 entry->msi_attrib.maskbit = !!(control & PCI_MSI_FLAGS_MASKBIT); in msi_setup_entry()
556 entry->msi_attrib.default_irq = dev->irq; /* Save IOAPIC IRQ */ in msi_setup_entry()
557 entry->msi_attrib.multi_cap = (control & PCI_MSI_FLAGS_QMASK) >> 1; in msi_setup_entry()
558 entry->msi_attrib.multiple = ilog2(__roundup_pow_of_two(nvec)); in msi_setup_entry()
561 entry->mask_pos = dev->msi_cap + PCI_MSI_MASK_64; in msi_setup_entry()
563 entry->mask_pos = dev->msi_cap + PCI_MSI_MASK_32; in msi_setup_entry()
566 if (entry->msi_attrib.maskbit) in msi_setup_entry()
567 pci_read_config_dword(dev, entry->mask_pos, &entry->masked); in msi_setup_entry()
579 if (!dev->no_64bit_msi || !entry->msg.address_hi) in msi_verify_entries()
581 pci_err(dev, "Device has broken 64-bit MSI but arch" in msi_verify_entries()
583 return -EIO; in msi_verify_entries()
589 * msi_capability_init - configure device's MSI capability structure
590 * @dev: pointer to the pci_dev data structure of MSI device function
594 * Setup the MSI capability structure of the device with the requested
596 * setup of an entry with the new MSI irq. A negative return value indicates
607 pci_msi_set_enable(dev, 0); /* Disable MSI during set up */ in msi_capability_init()
611 return -ENOMEM; in msi_capability_init()
614 mask = msi_mask(entry->msi_attrib.multi_cap); in msi_capability_init()
617 list_add_tail(&entry->list, dev_to_msi_list(&dev->dev)); in msi_capability_init()
619 /* Configure MSI capability structure */ in msi_capability_init()
641 /* Set MSI enabled bits */ in msi_capability_init()
644 dev->msi_enabled = 1; in msi_capability_init()
647 dev->irq = entry->irq; in msi_capability_init()
658 pci_read_config_dword(dev, dev->msix_cap + PCI_MSIX_TABLE, in msix_map_region()
683 entry = alloc_msi_entry(&dev->dev, 1, curmsk); in msix_setup_entries()
690 ret = -ENOMEM; in msix_setup_entries()
694 entry->msi_attrib.is_msix = 1; in msix_setup_entries()
695 entry->msi_attrib.is_64 = 1; in msix_setup_entries()
697 entry->msi_attrib.entry_nr = entries[i].entry; in msix_setup_entries()
699 entry->msi_attrib.entry_nr = i; in msix_setup_entries()
700 entry->msi_attrib.default_irq = dev->irq; in msix_setup_entries()
701 entry->mask_base = base; in msix_setup_entries()
703 list_add_tail(&entry->list, dev_to_msi_list(&dev->dev)); in msix_setup_entries()
721 entries[i++].vector = entry->irq; in msix_program_entries()
722 entry->masked = readl(pci_msix_desc_addr(entry) + in msix_program_entries()
729 * msix_capability_init - configure device's MSI-X capability
730 * @dev: pointer to the pci_dev data structure of MSI-X device function
735 * Setup the MSI-X capability structure of device function with a
736 * single MSI-X irq. A return of zero indicates the successful setup of
737 * requested MSI-X entries with allocated irqs or non-zero for otherwise.
746 /* Ensure MSI-X is disabled while it is set up */ in msix_capability_init()
749 pci_read_config_word(dev, dev->msix_cap + PCI_MSIX_FLAGS, &control); in msix_capability_init()
750 /* Request & Map MSI-X table region */ in msix_capability_init()
753 return -ENOMEM; in msix_capability_init()
763 /* Check if all MSI entries honor device restrictions */ in msix_capability_init()
769 * Some devices require MSI-X to be enabled before we can touch the in msix_capability_init()
770 * MSI-X registers. We need to mask all the vectors to prevent in msix_capability_init()
782 /* Set MSI-X enabled bits and unmask the function */ in msix_capability_init()
784 dev->msix_enabled = 1; in msix_capability_init()
800 if (entry->irq != 0) in msix_capability_init()
814 * pci_msi_supported - check whether MSI may be enabled on a device
815 * @dev: pointer to the pci_dev data structure of MSI device function
819 * to determine if MSI/-X are supported for the device. If MSI/-X is
826 /* MSI must be globally enabled and supported by the device */ in pci_msi_supported()
830 if (!dev || dev->no_msi || dev->current_state != PCI_D0) in pci_msi_supported()
842 * Any bridge which does NOT route MSI transactions from its in pci_msi_supported()
845 * We expect only arch-specific PCI host bus controller driver in pci_msi_supported()
848 for (bus = dev->bus; bus; bus = bus->parent) in pci_msi_supported()
849 if (bus->bus_flags & PCI_BUS_FLAGS_NO_MSI) in pci_msi_supported()
856 * pci_msi_vec_count - Return the number of MSI vectors a device can send
859 * This function returns the number of MSI vectors a device requested via
861 * device is not capable sending MSI interrupts. Otherwise, the call succeeds
863 * MSI specification.
870 if (!dev->msi_cap) in pci_msi_vec_count()
871 return -EINVAL; in pci_msi_vec_count()
873 pci_read_config_word(dev, dev->msi_cap + PCI_MSI_FLAGS, &msgctl); in pci_msi_vec_count()
885 if (!pci_msi_enable || !dev || !dev->msi_enabled) in pci_msi_shutdown()
888 BUG_ON(list_empty(dev_to_msi_list(&dev->dev))); in pci_msi_shutdown()
893 dev->msi_enabled = 0; in pci_msi_shutdown()
895 /* Return the device with MSI unmasked as initial states */ in pci_msi_shutdown()
896 mask = msi_mask(desc->msi_attrib.multi_cap); in pci_msi_shutdown()
900 /* Restore dev->irq to its default pin-assertion irq */ in pci_msi_shutdown()
901 dev->irq = desc->msi_attrib.default_irq; in pci_msi_shutdown()
907 if (!pci_msi_enable || !dev || !dev->msi_enabled) in pci_disable_msi()
916 * pci_msix_vec_count - return the number of device's MSI-X table entries
917 * @dev: pointer to the pci_dev data structure of MSI-X device function
918 * This function returns the number of device's MSI-X table entries and
919 * therefore the number of MSI-X vectors device is capable of sending.
920 * It returns a negative errno if the device is not capable of sending MSI-X
927 if (!dev->msix_cap) in pci_msix_vec_count()
928 return -EINVAL; in pci_msix_vec_count()
930 pci_read_config_word(dev, dev->msix_cap + PCI_MSIX_FLAGS, &control); in pci_msix_vec_count()
942 return -EINVAL; in __pci_enable_msix()
954 return -EINVAL; /* invalid entry */ in __pci_enable_msix()
957 return -EINVAL; /* duplicate entry */ in __pci_enable_msix()
962 /* Check whether driver already requested for MSI irq */ in __pci_enable_msix()
963 if (dev->msi_enabled) { in __pci_enable_msix()
964 pci_info(dev, "can't enable MSI-X (MSI IRQ already assigned)\n"); in __pci_enable_msix()
965 return -EINVAL; in __pci_enable_msix()
974 if (!pci_msi_enable || !dev || !dev->msix_enabled) in pci_msix_shutdown()
978 dev->msix_enabled = 0; in pci_msix_shutdown()
982 /* Return the device with MSI-X masked as initial states */ in pci_msix_shutdown()
990 dev->msix_enabled = 0; in pci_msix_shutdown()
996 if (!pci_msi_enable || !dev || !dev->msix_enabled) in pci_disable_msix()
1010 * pci_msi_enabled - is MSI enabled?
1012 * Returns true if MSI has not been disabled by the command-line option
1028 return -EINVAL; in __pci_enable_msi_range()
1030 /* Check whether driver already requested MSI-X irqs */ in __pci_enable_msi_range()
1031 if (dev->msix_enabled) { in __pci_enable_msi_range()
1032 pci_info(dev, "can't enable MSI (MSI-X already enabled)\n"); in __pci_enable_msi_range()
1033 return -EINVAL; in __pci_enable_msi_range()
1037 return -ERANGE; in __pci_enable_msi_range()
1039 if (WARN_ON_ONCE(dev->msi_enabled)) in __pci_enable_msi_range()
1040 return -EINVAL; in __pci_enable_msi_range()
1046 return -ENOSPC; in __pci_enable_msi_range()
1055 return -ENOSPC; in __pci_enable_msi_range()
1065 return -ENOSPC; in __pci_enable_msi_range()
1088 return -ERANGE; in __pci_enable_msix_range()
1090 if (WARN_ON_ONCE(dev->msix_enabled)) in __pci_enable_msix_range()
1091 return -EINVAL; in __pci_enable_msix_range()
1097 return -ENOSPC; in __pci_enable_msix_range()
1107 return -ENOSPC; in __pci_enable_msix_range()
1114 * pci_enable_msix_range - configure device's MSI-X capability structure
1115 * @dev: pointer to the pci_dev data structure of MSI-X device function
1116 * @entries: pointer to an array of MSI-X entries
1117 * @minvec: minimum number of MSI-X irqs requested
1118 * @maxvec: maximum number of MSI-X irqs requested
1120 * Setup the MSI-X capability structure of device function with a maximum
1122 * upon its software driver call to request for MSI-X mode enabled on its
1125 * indicates the successful configuration of MSI-X capability structure
1126 * with new allocated MSI-X interrupts.
1136 * pci_alloc_irq_vectors_affinity - allocate multiple IRQs for a device
1143 * Allocate up to @max_vecs interrupt vectors for @dev, using MSI-X or MSI
1148 * available for @dev the function will fail with -ENOSPC.
1158 int msix_vecs = -ENOSPC; in pci_alloc_irq_vectors_affinity()
1159 int msi_vecs = -ENOSPC; in pci_alloc_irq_vectors_affinity()
1185 if (min_vecs == 1 && dev->irq) { in pci_alloc_irq_vectors_affinity()
1191 if (msix_vecs == -ENOSPC) in pci_alloc_irq_vectors_affinity()
1192 return -ENOSPC; in pci_alloc_irq_vectors_affinity()
1198 * pci_free_irq_vectors - free previously allocated IRQs for a device
1211 * pci_irq_vector - return Linux IRQ number of a device vector
1213 * @nr: device-relative interrupt vector index (0-based).
1217 if (dev->msix_enabled) { in pci_irq_vector()
1223 return entry->irq; in pci_irq_vector()
1227 return -EINVAL; in pci_irq_vector()
1230 if (dev->msi_enabled) { in pci_irq_vector()
1233 if (WARN_ON_ONCE(nr >= entry->nvec_used)) in pci_irq_vector()
1234 return -EINVAL; in pci_irq_vector()
1237 return -EINVAL; in pci_irq_vector()
1240 return dev->irq + nr; in pci_irq_vector()
1245 * pci_irq_get_affinity - return the affinity of a particular msi vector
1247 * @nr: device-relative interrupt vector index (0-based).
1251 if (dev->msix_enabled) { in pci_irq_get_affinity()
1257 return entry->affinity; in pci_irq_get_affinity()
1262 } else if (dev->msi_enabled) { in pci_irq_get_affinity()
1265 if (WARN_ON_ONCE(!entry || !entry->affinity || in pci_irq_get_affinity()
1266 nr >= entry->nvec_used)) in pci_irq_get_affinity()
1269 return &entry->affinity[nr]; in pci_irq_get_affinity()
1277 * pci_irq_get_node - return the numa node of a particular msi vector
1279 * @vec: device-relative interrupt vector index (0-based).
1288 return dev_to_node(&pdev->dev); in pci_irq_get_node()
1294 return to_pci_dev(desc->dev); in msi_desc_to_pci_dev()
1302 return dev->bus->sysdata; in msi_desc_to_pci_sysdata()
1308 * pci_msi_domain_write_msg - Helper to write MSI message to PCI config space
1309 * @irq_data: Pointer to interrupt data of the MSI interrupt
1317 * For MSI-X desc->irq is always equal to irq_data->irq. For in pci_msi_domain_write_msg()
1318 * MSI only the first interrupt of MULTI MSI passes the test. in pci_msi_domain_write_msg()
1320 if (desc->irq == irq_data->irq) in pci_msi_domain_write_msg()
1325 * pci_msi_domain_calc_hwirq - Generate a unique ID for an MSI source
1327 * @desc: Pointer to the msi descriptor
1334 return (irq_hw_number_t)desc->msi_attrib.entry_nr | in pci_msi_domain_calc_hwirq()
1335 PCI_DEVID(dev->bus->number, dev->devfn) << 11 | in pci_msi_domain_calc_hwirq()
1336 (pci_domain_nr(dev->bus) & 0xFFFFFFFF) << 27; in pci_msi_domain_calc_hwirq()
1341 return !desc->msi_attrib.is_msix && desc->nvec_used > 1; in pci_msi_desc_is_multi_msi()
1345 * pci_msi_domain_check_cap - Verify that @domain supports the capabilities for @dev
1352 * 1 if Multi MSI is requested, but the domain does not support it
1353 * -ENOTSUPP otherwise
1362 !(info->flags & MSI_FLAG_MULTI_PCI_MSI)) in pci_msi_domain_check_cap()
1364 else if (desc->msi_attrib.is_msix && !(info->flags & MSI_FLAG_PCI_MSIX)) in pci_msi_domain_check_cap()
1365 return -ENOTSUPP; in pci_msi_domain_check_cap()
1374 if (pci_msi_desc_is_multi_msi(desc) && error == -ENOSPC) in pci_msi_domain_handle_error()
1384 arg->desc = desc; in pci_msi_domain_set_desc()
1385 arg->hwirq = pci_msi_domain_calc_hwirq(msi_desc_to_pci_dev(desc), in pci_msi_domain_set_desc()
1400 struct msi_domain_ops *ops = info->ops; in pci_msi_domain_update_dom_ops()
1403 info->ops = &pci_msi_domain_ops_default; in pci_msi_domain_update_dom_ops()
1405 if (ops->set_desc == NULL) in pci_msi_domain_update_dom_ops()
1406 ops->set_desc = pci_msi_domain_set_desc; in pci_msi_domain_update_dom_ops()
1407 if (ops->msi_check == NULL) in pci_msi_domain_update_dom_ops()
1408 ops->msi_check = pci_msi_domain_check_cap; in pci_msi_domain_update_dom_ops()
1409 if (ops->handle_error == NULL) in pci_msi_domain_update_dom_ops()
1410 ops->handle_error = pci_msi_domain_handle_error; in pci_msi_domain_update_dom_ops()
1416 struct irq_chip *chip = info->chip; in pci_msi_domain_update_chip_ops()
1419 if (!chip->irq_write_msi_msg) in pci_msi_domain_update_chip_ops()
1420 chip->irq_write_msi_msg = pci_msi_domain_write_msg; in pci_msi_domain_update_chip_ops()
1421 if (!chip->irq_mask) in pci_msi_domain_update_chip_ops()
1422 chip->irq_mask = pci_msi_mask_irq; in pci_msi_domain_update_chip_ops()
1423 if (!chip->irq_unmask) in pci_msi_domain_update_chip_ops()
1424 chip->irq_unmask = pci_msi_unmask_irq; in pci_msi_domain_update_chip_ops()
1428 * pci_msi_create_irq_domain - Create a MSI interrupt domain
1430 * @info: MSI domain info
1433 * Updates the domain and chip ops and creates a MSI interrupt domain.
1444 if (WARN_ON(info->flags & MSI_FLAG_LEVEL_CAPABLE)) in pci_msi_create_irq_domain()
1445 info->flags &= ~MSI_FLAG_LEVEL_CAPABLE; in pci_msi_create_irq_domain()
1447 if (info->flags & MSI_FLAG_USE_DEF_DOM_OPS) in pci_msi_create_irq_domain()
1449 if (info->flags & MSI_FLAG_USE_DEF_CHIP_OPS) in pci_msi_create_irq_domain()
1452 info->flags |= MSI_FLAG_ACTIVATE_EARLY; in pci_msi_create_irq_domain()
1454 info->flags |= MSI_FLAG_MUST_REACTIVATE; in pci_msi_create_irq_domain()
1456 /* PCI-MSI is oneshot-safe */ in pci_msi_create_irq_domain()
1457 info->chip->flags |= IRQCHIP_ONESHOT_SAFE; in pci_msi_create_irq_domain()
1469 * Users of the generic MSI infrastructure expect a device to have a single ID,
1470 * so with DMA aliases we have to pick the least-worst compromise. Devices with
1476 * case is that of PCI->PCIe so we should always use the alias RID. This echoes
1478 * well enough in practice; in the face of the horrible PCIe<->PCI-X conditions
1486 if (pdev->bus->number != bus || PCI_BUS_NUM(alias) != bus) in get_msi_id_cb()
1493 * pci_msi_domain_get_msi_rid - Get the MSI requester id (RID)
1505 u32 rid = PCI_DEVID(pdev->bus->number, pdev->devfn); in pci_msi_domain_get_msi_rid()
1510 rid = of_node ? of_msi_map_rid(&pdev->dev, of_node, rid) : in pci_msi_domain_get_msi_rid()
1511 iort_msi_map_rid(&pdev->dev, rid); in pci_msi_domain_get_msi_rid()
1517 * pci_msi_get_device_domain - Get the MSI domain for a given PCI device
1520 * Use the firmware data to find a device-specific MSI domain
1523 * Returns: The corresponding MSI domain or NULL if none has been found.
1528 u32 rid = PCI_DEVID(pdev->bus->number, pdev->devfn); in pci_msi_get_device_domain()
1531 dom = of_msi_map_get_device_domain(&pdev->dev, rid); in pci_msi_get_device_domain()
1533 dom = iort_get_device_domain(&pdev->dev, rid); in pci_msi_get_device_domain()