Lines Matching +full:pci +full:- +full:domain
1 // SPDX-License-Identifier: GPL-2.0
3 * PCI Message Signaled Interrupt (MSI)
5 * Copyright (C) 2003-2004 Intel
16 #include <linux/pci.h>
27 #include "pci.h"
39 struct irq_domain *domain; in pci_msi_setup_msi_irqs() local
41 domain = dev_get_msi_domain(&dev->dev); in pci_msi_setup_msi_irqs()
42 if (domain && irq_domain_is_hierarchy(domain)) in pci_msi_setup_msi_irqs()
43 return msi_domain_alloc_irqs(domain, &dev->dev, nvec); in pci_msi_setup_msi_irqs()
50 struct irq_domain *domain; in pci_msi_teardown_msi_irqs() local
52 domain = dev_get_msi_domain(&dev->dev); in pci_msi_teardown_msi_irqs()
53 if (domain && irq_domain_is_hierarchy(domain)) in pci_msi_teardown_msi_irqs()
54 msi_domain_free_irqs(domain, &dev->dev); in pci_msi_teardown_msi_irqs()
67 return -EINVAL; in arch_setup_msi_irq()
91 return -ENOSPC; in arch_setup_msi_irqs()
103 if (entry->irq) in arch_teardown_msi_irqs()
104 for (i = 0; i < entry->nvec_used; i++) in arch_teardown_msi_irqs()
105 arch_teardown_msi_irq(entry->irq + i); in arch_teardown_msi_irqs()
114 if (dev->msix_enabled) { in default_restore_msi_irq()
116 if (irq == entry->irq) in default_restore_msi_irq()
119 } else if (dev->msi_enabled) { in default_restore_msi_irq()
124 __pci_write_msi_msg(entry, &entry->msg); in default_restore_msi_irq()
133 * PCI 2.3 does not specify mask bits for each MSI interrupt. Attempting to
141 if (desc->msi_attrib.multi_cap >= 5) in msi_multi_mask()
143 return (1 << (1 << desc->msi_attrib.multi_cap)) - 1; in msi_multi_mask()
148 raw_spinlock_t *lock = &desc->dev->msi_lock; in pci_msi_update_mask()
152 desc->msi_mask &= ~clear; in pci_msi_update_mask()
153 desc->msi_mask |= set; in pci_msi_update_mask()
154 pci_write_config_dword(msi_desc_to_pci_dev(desc), desc->mask_pos, in pci_msi_update_mask()
155 desc->msi_mask); in pci_msi_update_mask()
171 return desc->mask_base + desc->msi_attrib.entry_nr * PCI_MSIX_ENTRY_SIZE; in pci_msix_desc_addr()
175 * This internal function does not flush PCI writes to the device. All
189 desc->msix_ctrl |= PCI_MSIX_ENTRY_CTRL_MASKBIT; in pci_msix_mask()
190 pci_msix_write_vector_ctrl(desc, desc->msix_ctrl); in pci_msix_mask()
192 readl(desc->mask_base); in pci_msix_mask()
197 desc->msix_ctrl &= ~PCI_MSIX_ENTRY_CTRL_MASKBIT; in pci_msix_unmask()
198 pci_msix_write_vector_ctrl(desc, desc->msix_ctrl); in pci_msix_unmask()
203 if (pci_msi_ignore_mask || desc->msi_attrib.is_virtual) in __pci_msi_mask_desc()
206 if (desc->msi_attrib.is_msix) in __pci_msi_mask_desc()
208 else if (desc->msi_attrib.maskbit) in __pci_msi_mask_desc()
214 if (pci_msi_ignore_mask || desc->msi_attrib.is_virtual) in __pci_msi_unmask_desc()
217 if (desc->msi_attrib.is_msix) in __pci_msi_unmask_desc()
219 else if (desc->msi_attrib.maskbit) in __pci_msi_unmask_desc()
224 * pci_msi_mask_irq - Generic IRQ chip callback to mask PCI/MSI interrupts
231 __pci_msi_mask_desc(desc, BIT(data->irq - desc->irq)); in pci_msi_mask_irq()
236 * pci_msi_unmask_irq - Generic IRQ chip callback to unmask PCI/MSI interrupts
243 __pci_msi_unmask_desc(desc, BIT(data->irq - desc->irq)); in pci_msi_unmask_irq()
252 default_restore_msi_irq(dev, entry->irq); in default_restore_msi_irqs()
259 BUG_ON(dev->current_state != PCI_D0); in __pci_read_msi_msg()
261 if (entry->msi_attrib.is_msix) { in __pci_read_msi_msg()
264 if (WARN_ON_ONCE(entry->msi_attrib.is_virtual)) in __pci_read_msi_msg()
267 msg->address_lo = readl(base + PCI_MSIX_ENTRY_LOWER_ADDR); in __pci_read_msi_msg()
268 msg->address_hi = readl(base + PCI_MSIX_ENTRY_UPPER_ADDR); in __pci_read_msi_msg()
269 msg->data = readl(base + PCI_MSIX_ENTRY_DATA); in __pci_read_msi_msg()
271 int pos = dev->msi_cap; in __pci_read_msi_msg()
275 &msg->address_lo); in __pci_read_msi_msg()
276 if (entry->msi_attrib.is_64) { in __pci_read_msi_msg()
278 &msg->address_hi); in __pci_read_msi_msg()
281 msg->address_hi = 0; in __pci_read_msi_msg()
284 msg->data = data; in __pci_read_msi_msg()
292 if (dev->current_state != PCI_D0 || pci_dev_is_disconnected(dev)) { in __pci_write_msi_msg()
294 } else if (entry->msi_attrib.is_msix) { in __pci_write_msi_msg()
296 u32 ctrl = entry->msix_ctrl; in __pci_write_msi_msg()
299 if (entry->msi_attrib.is_virtual) in __pci_write_msi_msg()
313 writel(msg->address_lo, base + PCI_MSIX_ENTRY_LOWER_ADDR); in __pci_write_msi_msg()
314 writel(msg->address_hi, base + PCI_MSIX_ENTRY_UPPER_ADDR); in __pci_write_msi_msg()
315 writel(msg->data, base + PCI_MSIX_ENTRY_DATA); in __pci_write_msi_msg()
323 int pos = dev->msi_cap; in __pci_write_msi_msg()
328 msgctl |= entry->msi_attrib.multiple << 4; in __pci_write_msi_msg()
332 msg->address_lo); in __pci_write_msi_msg()
333 if (entry->msi_attrib.is_64) { in __pci_write_msi_msg()
335 msg->address_hi); in __pci_write_msi_msg()
337 msg->data); in __pci_write_msi_msg()
340 msg->data); in __pci_write_msi_msg()
347 entry->msg = *msg; in __pci_write_msi_msg()
349 if (entry->write_msi_msg) in __pci_write_msi_msg()
350 entry->write_msi_msg(entry, entry->write_msi_msg_data); in __pci_write_msi_msg()
364 struct list_head *msi_list = dev_to_msi_list(&dev->dev); in free_msi_irqs()
369 if (entry->irq) in free_msi_irqs()
370 for (i = 0; i < entry->nvec_used; i++) in free_msi_irqs()
371 BUG_ON(irq_has_action(entry->irq + i)); in free_msi_irqs()
376 if (entry->msi_attrib.is_msix) { in free_msi_irqs()
377 if (list_is_last(&entry->list, msi_list)) in free_msi_irqs()
378 iounmap(entry->mask_base); in free_msi_irqs()
381 list_del(&entry->list); in free_msi_irqs()
385 if (dev->msi_irq_groups) { in free_msi_irqs()
386 msi_destroy_sysfs(&dev->dev, dev->msi_irq_groups); in free_msi_irqs()
387 dev->msi_irq_groups = NULL; in free_msi_irqs()
393 if (!(dev->dev_flags & PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG)) in pci_intx_for_msi()
401 pci_read_config_word(dev, dev->msi_cap + PCI_MSI_FLAGS, &control); in pci_msi_set_enable()
405 pci_write_config_word(dev, dev->msi_cap + PCI_MSI_FLAGS, control); in pci_msi_set_enable()
413 if (!dev->msi_enabled) in __pci_restore_msi_state()
416 entry = irq_get_msi_desc(dev->irq); in __pci_restore_msi_state()
422 pci_read_config_word(dev, dev->msi_cap + PCI_MSI_FLAGS, &control); in __pci_restore_msi_state()
425 control |= (entry->msi_attrib.multiple << 4) | PCI_MSI_FLAGS_ENABLE; in __pci_restore_msi_state()
426 pci_write_config_word(dev, dev->msi_cap + PCI_MSI_FLAGS, control); in __pci_restore_msi_state()
433 pci_read_config_word(dev, dev->msix_cap + PCI_MSIX_FLAGS, &ctrl); in pci_msix_clear_and_set_ctrl()
436 pci_write_config_word(dev, dev->msix_cap + PCI_MSIX_FLAGS, ctrl); in pci_msix_clear_and_set_ctrl()
443 if (!dev->msix_enabled) in __pci_restore_msix_state()
445 BUG_ON(list_empty(dev_to_msi_list(&dev->dev))); in __pci_restore_msix_state()
454 pci_msix_write_vector_ctrl(entry, entry->msix_ctrl); in __pci_restore_msix_state()
477 entry = alloc_msi_entry(&dev->dev, nvec, masks); in msi_setup_entry()
481 pci_read_config_word(dev, dev->msi_cap + PCI_MSI_FLAGS, &control); in msi_setup_entry()
483 entry->msi_attrib.is_msix = 0; in msi_setup_entry()
484 entry->msi_attrib.is_64 = !!(control & PCI_MSI_FLAGS_64BIT); in msi_setup_entry()
485 entry->msi_attrib.is_virtual = 0; in msi_setup_entry()
486 entry->msi_attrib.entry_nr = 0; in msi_setup_entry()
487 entry->msi_attrib.maskbit = !!(control & PCI_MSI_FLAGS_MASKBIT); in msi_setup_entry()
488 entry->msi_attrib.default_irq = dev->irq; /* Save IOAPIC IRQ */ in msi_setup_entry()
489 entry->msi_attrib.multi_cap = (control & PCI_MSI_FLAGS_QMASK) >> 1; in msi_setup_entry()
490 entry->msi_attrib.multiple = ilog2(__roundup_pow_of_two(nvec)); in msi_setup_entry()
493 entry->mask_pos = dev->msi_cap + PCI_MSI_MASK_64; in msi_setup_entry()
495 entry->mask_pos = dev->msi_cap + PCI_MSI_MASK_32; in msi_setup_entry()
498 if (entry->msi_attrib.maskbit) in msi_setup_entry()
499 pci_read_config_dword(dev, entry->mask_pos, &entry->msi_mask); in msi_setup_entry()
510 if (!dev->no_64bit_msi) in msi_verify_entries()
514 if (entry->msg.address_hi) { in msi_verify_entries()
515 pci_err(dev, "arch assigned 64-bit MSI address %#x%08x but device only supports 32 bits\n", in msi_verify_entries()
516 entry->msg.address_hi, entry->msg.address_lo); in msi_verify_entries()
517 return -EIO; in msi_verify_entries()
524 * msi_capability_init - configure device's MSI capability structure
546 return -ENOMEM; in msi_capability_init()
551 list_add_tail(&entry->list, dev_to_msi_list(&dev->dev)); in msi_capability_init()
562 groups = msi_populate_sysfs(&dev->dev); in msi_capability_init()
568 dev->msi_irq_groups = groups; in msi_capability_init()
573 dev->msi_enabled = 1; in msi_capability_init()
576 dev->irq = entry->irq; in msi_capability_init()
592 pci_read_config_dword(dev, dev->msix_cap + PCI_MSIX_TABLE, in msix_map_region()
619 entry = alloc_msi_entry(&dev->dev, 1, curmsk); in msix_setup_entries()
626 ret = -ENOMEM; in msix_setup_entries()
630 entry->msi_attrib.is_msix = 1; in msix_setup_entries()
631 entry->msi_attrib.is_64 = 1; in msix_setup_entries()
634 entry->msi_attrib.entry_nr = entries[i].entry; in msix_setup_entries()
636 entry->msi_attrib.entry_nr = i; in msix_setup_entries()
638 entry->msi_attrib.is_virtual = in msix_setup_entries()
639 entry->msi_attrib.entry_nr >= vec_count; in msix_setup_entries()
641 entry->msi_attrib.default_irq = dev->irq; in msix_setup_entries()
642 entry->mask_base = base; in msix_setup_entries()
644 if (!entry->msi_attrib.is_virtual) { in msix_setup_entries()
646 entry->msix_ctrl = readl(addr + PCI_MSIX_ENTRY_VECTOR_CTRL); in msix_setup_entries()
649 list_add_tail(&entry->list, dev_to_msi_list(&dev->dev)); in msix_setup_entries()
665 entries->vector = entry->irq; in msix_update_entries()
684 * msix_capability_init - configure device's MSI-X capability
685 * @dev: pointer to the pci_dev data structure of MSI-X device function
690 * Setup the MSI-X capability structure of device function with a
691 * single MSI-X IRQ. A return of zero indicates the successful setup of
692 * requested MSI-X entries with allocated IRQs or non-zero for otherwise.
703 * Some devices require MSI-X to be enabled before the MSI-X in msix_capability_init()
710 pci_read_config_word(dev, dev->msix_cap + PCI_MSIX_FLAGS, &control); in msix_capability_init()
711 /* Request & Map MSI-X table region */ in msix_capability_init()
715 ret = -ENOMEM; in msix_capability_init()
737 groups = msi_populate_sysfs(&dev->dev); in msix_capability_init()
743 dev->msi_irq_groups = groups; in msix_capability_init()
745 /* Set MSI-X enabled bits and unmask the function */ in msix_capability_init()
747 dev->msix_enabled = 1; in msix_capability_init()
763 if (entry->irq != 0) in msix_capability_init()
780 * pci_msi_supported - check whether MSI may be enabled on a device
785 * to determine if MSI/-X are supported for the device. If MSI/-X is
796 if (!dev || dev->no_msi) in pci_msi_supported()
813 * - arch-specific PCI host bus controller drivers (deprecated) in pci_msi_supported()
814 * - quirks for specific PCI bridges in pci_msi_supported()
816 * or indirectly by platform-specific PCI host bridge drivers by in pci_msi_supported()
818 * the NO_MSI flag when no MSI domain is found for this bridge in pci_msi_supported()
821 for (bus = dev->bus; bus; bus = bus->parent) in pci_msi_supported()
822 if (bus->bus_flags & PCI_BUS_FLAGS_NO_MSI) in pci_msi_supported()
829 * pci_msi_vec_count - Return the number of MSI vectors a device can send
843 if (!dev->msi_cap) in pci_msi_vec_count()
844 return -EINVAL; in pci_msi_vec_count()
846 pci_read_config_word(dev, dev->msi_cap + PCI_MSI_FLAGS, &msgctl); in pci_msi_vec_count()
857 if (!pci_msi_enable || !dev || !dev->msi_enabled) in pci_msi_shutdown()
860 BUG_ON(list_empty(dev_to_msi_list(&dev->dev))); in pci_msi_shutdown()
865 dev->msi_enabled = 0; in pci_msi_shutdown()
870 /* Restore dev->irq to its default pin-assertion IRQ */ in pci_msi_shutdown()
871 dev->irq = desc->msi_attrib.default_irq; in pci_msi_shutdown()
877 if (!pci_msi_enable || !dev || !dev->msi_enabled) in pci_disable_msi()
886 * pci_msix_vec_count - return the number of device's MSI-X table entries
887 * @dev: pointer to the pci_dev data structure of MSI-X device function
888 * This function returns the number of device's MSI-X table entries and
889 * therefore the number of MSI-X vectors device is capable of sending.
890 * It returns a negative errno if the device is not capable of sending MSI-X
897 if (!dev->msix_cap) in pci_msix_vec_count()
898 return -EINVAL; in pci_msix_vec_count()
900 pci_read_config_word(dev, dev->msix_cap + PCI_MSIX_FLAGS, &control); in pci_msix_vec_count()
911 if (!pci_msi_supported(dev, nvec) || dev->current_state != PCI_D0) in __pci_enable_msix()
912 return -EINVAL; in __pci_enable_msix()
924 return -EINVAL; /* invalid entry */ in __pci_enable_msix()
927 return -EINVAL; /* duplicate entry */ in __pci_enable_msix()
933 if (dev->msi_enabled) { in __pci_enable_msix()
934 pci_info(dev, "can't enable MSI-X (MSI IRQ already assigned)\n"); in __pci_enable_msix()
935 return -EINVAL; in __pci_enable_msix()
944 if (!pci_msi_enable || !dev || !dev->msix_enabled) in pci_msix_shutdown()
948 dev->msix_enabled = 0; in pci_msix_shutdown()
952 /* Return the device with MSI-X masked as initial states */ in pci_msix_shutdown()
958 dev->msix_enabled = 0; in pci_msix_shutdown()
964 if (!pci_msi_enable || !dev || !dev->msix_enabled) in pci_disable_msix()
978 * pci_msi_enabled - is MSI enabled?
980 * Returns true if MSI has not been disabled by the command-line option
981 * pci=nomsi.
995 if (!pci_msi_supported(dev, minvec) || dev->current_state != PCI_D0) in __pci_enable_msi_range()
996 return -EINVAL; in __pci_enable_msi_range()
998 /* Check whether driver already requested MSI-X IRQs */ in __pci_enable_msi_range()
999 if (dev->msix_enabled) { in __pci_enable_msi_range()
1000 pci_info(dev, "can't enable MSI (MSI-X already enabled)\n"); in __pci_enable_msi_range()
1001 return -EINVAL; in __pci_enable_msi_range()
1005 return -ERANGE; in __pci_enable_msi_range()
1007 if (WARN_ON_ONCE(dev->msi_enabled)) in __pci_enable_msi_range()
1008 return -EINVAL; in __pci_enable_msi_range()
1014 return -ENOSPC; in __pci_enable_msi_range()
1023 return -ENOSPC; in __pci_enable_msi_range()
1033 return -ENOSPC; in __pci_enable_msi_range()
1057 return -ERANGE; in __pci_enable_msix_range()
1059 if (WARN_ON_ONCE(dev->msix_enabled)) in __pci_enable_msix_range()
1060 return -EINVAL; in __pci_enable_msix_range()
1066 return -ENOSPC; in __pci_enable_msix_range()
1076 return -ENOSPC; in __pci_enable_msix_range()
1083 * pci_enable_msix_range - configure device's MSI-X capability structure
1084 * @dev: pointer to the pci_dev data structure of MSI-X device function
1085 * @entries: pointer to an array of MSI-X entries
1086 * @minvec: minimum number of MSI-X IRQs requested
1087 * @maxvec: maximum number of MSI-X IRQs requested
1089 * Setup the MSI-X capability structure of device function with a maximum
1091 * upon its software driver call to request for MSI-X mode enabled on its
1094 * indicates the successful configuration of MSI-X capability structure
1095 * with new allocated MSI-X interrupts.
1105 * pci_alloc_irq_vectors_affinity - allocate multiple IRQs for a device
1106 * @dev: PCI device to operate on
1112 * Allocate up to @max_vecs interrupt vectors for @dev, using MSI-X or MSI
1117 * available for @dev the function will fail with -ENOSPC.
1127 int nvecs = -ENOSPC; in pci_alloc_irq_vectors_affinity()
1152 if (min_vecs == 1 && dev->irq) { in pci_alloc_irq_vectors_affinity()
1170 * pci_free_irq_vectors - free previously allocated IRQs for a device
1171 * @dev: PCI device to operate on
1183 * pci_irq_vector - return Linux IRQ number of a device vector
1184 * @dev: PCI device to operate on
1185 * @nr: device-relative interrupt vector index (0-based).
1189 if (dev->msix_enabled) { in pci_irq_vector()
1195 return entry->irq; in pci_irq_vector()
1199 return -EINVAL; in pci_irq_vector()
1202 if (dev->msi_enabled) { in pci_irq_vector()
1205 if (WARN_ON_ONCE(nr >= entry->nvec_used)) in pci_irq_vector()
1206 return -EINVAL; in pci_irq_vector()
1209 return -EINVAL; in pci_irq_vector()
1212 return dev->irq + nr; in pci_irq_vector()
1217 * pci_irq_get_affinity - return the affinity of a particular MSI vector
1218 * @dev: PCI device to operate on
1219 * @nr: device-relative interrupt vector index (0-based).
1223 if (dev->msix_enabled) { in pci_irq_get_affinity()
1229 return &entry->affinity->mask; in pci_irq_get_affinity()
1234 } else if (dev->msi_enabled) { in pci_irq_get_affinity()
1237 if (WARN_ON_ONCE(!entry || !entry->affinity || in pci_irq_get_affinity()
1238 nr >= entry->nvec_used)) in pci_irq_get_affinity()
1241 return &entry->affinity[nr].mask; in pci_irq_get_affinity()
1250 return to_pci_dev(desc->dev); in msi_desc_to_pci_dev()
1258 return dev->bus->sysdata; in msi_desc_to_pci_sysdata()
1264 * pci_msi_domain_write_msg - Helper to write MSI message to PCI config space
1273 * For MSI-X desc->irq is always equal to irq_data->irq. For in pci_msi_domain_write_msg()
1276 if (desc->irq == irq_data->irq) in pci_msi_domain_write_msg()
1281 * pci_msi_domain_calc_hwirq - Generate a unique ID for an MSI source
1290 return (irq_hw_number_t)desc->msi_attrib.entry_nr | in pci_msi_domain_calc_hwirq()
1292 (pci_domain_nr(dev->bus) & 0xFFFFFFFF) << 27; in pci_msi_domain_calc_hwirq()
1297 return !desc->msi_attrib.is_msix && desc->nvec_used > 1; in pci_msi_desc_is_multi_msi()
1301 * pci_msi_domain_check_cap - Verify that @domain supports the capabilities
1303 * @domain: The interrupt domain to check
1304 * @info: The domain info for verification
1309 * 1 if Multi MSI is requested, but the domain does not support it
1310 * -ENOTSUPP otherwise
1312 int pci_msi_domain_check_cap(struct irq_domain *domain, in pci_msi_domain_check_cap() argument
1319 !(info->flags & MSI_FLAG_MULTI_PCI_MSI)) in pci_msi_domain_check_cap()
1321 else if (desc->msi_attrib.is_msix && !(info->flags & MSI_FLAG_PCI_MSIX)) in pci_msi_domain_check_cap()
1322 return -ENOTSUPP; in pci_msi_domain_check_cap()
1327 static int pci_msi_domain_handle_error(struct irq_domain *domain, in pci_msi_domain_handle_error() argument
1331 if (pci_msi_desc_is_multi_msi(desc) && error == -ENOSPC) in pci_msi_domain_handle_error()
1340 arg->desc = desc; in pci_msi_domain_set_desc()
1341 arg->hwirq = pci_msi_domain_calc_hwirq(desc); in pci_msi_domain_set_desc()
1352 struct msi_domain_ops *ops = info->ops; in pci_msi_domain_update_dom_ops()
1355 info->ops = &pci_msi_domain_ops_default; in pci_msi_domain_update_dom_ops()
1357 if (ops->set_desc == NULL) in pci_msi_domain_update_dom_ops()
1358 ops->set_desc = pci_msi_domain_set_desc; in pci_msi_domain_update_dom_ops()
1359 if (ops->msi_check == NULL) in pci_msi_domain_update_dom_ops()
1360 ops->msi_check = pci_msi_domain_check_cap; in pci_msi_domain_update_dom_ops()
1361 if (ops->handle_error == NULL) in pci_msi_domain_update_dom_ops()
1362 ops->handle_error = pci_msi_domain_handle_error; in pci_msi_domain_update_dom_ops()
1368 struct irq_chip *chip = info->chip; in pci_msi_domain_update_chip_ops()
1371 if (!chip->irq_write_msi_msg) in pci_msi_domain_update_chip_ops()
1372 chip->irq_write_msi_msg = pci_msi_domain_write_msg; in pci_msi_domain_update_chip_ops()
1373 if (!chip->irq_mask) in pci_msi_domain_update_chip_ops()
1374 chip->irq_mask = pci_msi_mask_irq; in pci_msi_domain_update_chip_ops()
1375 if (!chip->irq_unmask) in pci_msi_domain_update_chip_ops()
1376 chip->irq_unmask = pci_msi_unmask_irq; in pci_msi_domain_update_chip_ops()
1380 * pci_msi_create_irq_domain - Create a MSI interrupt domain
1382 * @info: MSI domain info
1383 * @parent: Parent irq domain
1385 * Updates the domain and chip ops and creates a MSI interrupt domain.
1388 * A domain pointer or NULL in case of failure.
1394 struct irq_domain *domain; in pci_msi_create_irq_domain() local
1396 if (WARN_ON(info->flags & MSI_FLAG_LEVEL_CAPABLE)) in pci_msi_create_irq_domain()
1397 info->flags &= ~MSI_FLAG_LEVEL_CAPABLE; in pci_msi_create_irq_domain()
1399 if (info->flags & MSI_FLAG_USE_DEF_DOM_OPS) in pci_msi_create_irq_domain()
1401 if (info->flags & MSI_FLAG_USE_DEF_CHIP_OPS) in pci_msi_create_irq_domain()
1404 info->flags |= MSI_FLAG_ACTIVATE_EARLY; in pci_msi_create_irq_domain()
1406 info->flags |= MSI_FLAG_MUST_REACTIVATE; in pci_msi_create_irq_domain()
1408 /* PCI-MSI is oneshot-safe */ in pci_msi_create_irq_domain()
1409 info->chip->flags |= IRQCHIP_ONESHOT_SAFE; in pci_msi_create_irq_domain()
1411 domain = msi_create_irq_domain(fwnode, info, parent); in pci_msi_create_irq_domain()
1412 if (!domain) in pci_msi_create_irq_domain()
1415 irq_domain_update_bus_token(domain, DOMAIN_BUS_PCI_MSI); in pci_msi_create_irq_domain()
1416 return domain; in pci_msi_create_irq_domain()
1422 * so with DMA aliases we have to pick the least-worst compromise. Devices with
1428 * case is that of PCI->PCIe so we should always use the alias RID. This echoes
1430 * well enough in practice; in the face of the horrible PCIe<->PCI-X conditions
1438 if (pdev->bus->number != bus || PCI_BUS_NUM(alias) != bus) in get_msi_id_cb()
1445 * pci_msi_domain_get_msi_rid - Get the MSI requester id (RID)
1446 * @domain: The interrupt domain
1447 * @pdev: The PCI device.
1454 u32 pci_msi_domain_get_msi_rid(struct irq_domain *domain, struct pci_dev *pdev) in pci_msi_domain_get_msi_rid() argument
1461 of_node = irq_domain_get_of_node(domain); in pci_msi_domain_get_msi_rid()
1462 rid = of_node ? of_msi_map_id(&pdev->dev, of_node, rid) : in pci_msi_domain_get_msi_rid()
1463 iort_msi_map_id(&pdev->dev, rid); in pci_msi_domain_get_msi_rid()
1469 * pci_msi_get_device_domain - Get the MSI domain for a given PCI device
1470 * @pdev: The PCI device
1472 * Use the firmware data to find a device-specific MSI domain
1475 * Returns: The corresponding MSI domain or NULL if none has been found.
1483 dom = of_msi_map_get_device_domain(&pdev->dev, rid, DOMAIN_BUS_PCI_MSI); in pci_msi_get_device_domain()
1485 dom = iort_get_device_domain(&pdev->dev, rid, in pci_msi_get_device_domain()
1491 * pci_dev_has_special_msi_domain - Check whether the device is handled by
1492 * a non-standard PCI-MSI domain
1493 * @pdev: The PCI device to check.
1496 * non-standard PCI/MSI.
1500 struct irq_domain *dom = dev_get_msi_domain(&pdev->dev); in pci_dev_has_special_msi_domain()
1503 dom = dev_get_msi_domain(&pdev->bus->dev); in pci_dev_has_special_msi_domain()
1508 return dom->bus_token != DOMAIN_BUS_PCI_MSI; in pci_dev_has_special_msi_domain()
1523 dev->msi_cap = pci_find_capability(dev, PCI_CAP_ID_MSI); in pci_msi_init()
1524 if (!dev->msi_cap) in pci_msi_init()
1527 pci_read_config_word(dev, dev->msi_cap + PCI_MSI_FLAGS, &ctrl); in pci_msi_init()
1529 pci_write_config_word(dev, dev->msi_cap + PCI_MSI_FLAGS, in pci_msi_init()
1533 dev->no_64bit_msi = 1; in pci_msi_init()
1540 dev->msix_cap = pci_find_capability(dev, PCI_CAP_ID_MSIX); in pci_msix_init()
1541 if (!dev->msix_cap) in pci_msix_init()
1544 pci_read_config_word(dev, dev->msix_cap + PCI_MSIX_FLAGS, &ctrl); in pci_msix_init()
1546 pci_write_config_word(dev, dev->msix_cap + PCI_MSIX_FLAGS, in pci_msix_init()