15 #include <linux/msi.h>
73  * msi_add_msi_desc - Allocate and initialize a MSI descriptor
75  * @init_desc:	Pointer to an MSI descriptor to initialize the new descriptor
83 	lockdep_assert_held(&dev->msi.data->mutex);  in msi_add_msi_desc()
91 	return msi_insert_desc(dev->msi.data, desc, init_desc->msi_index);  in msi_add_msi_desc()
95  * msi_add_simple_msi_descs - Allocate and initialize MSI descriptors
97  * @index:	Index for the first MSI descriptor
108 	lockdep_assert_held(&dev->msi.data->mutex);  in msi_add_simple_msi_descs()
114 		ret = msi_insert_desc(dev->msi.data, desc, idx);  in msi_add_simple_msi_descs()
142  * msi_free_msi_descs_range - Free MSI descriptors of a device
151 	struct xarray *xa = &dev->msi.data->__store;  in msi_free_msi_descs_range()
155 	lockdep_assert_held(&dev->msi.data->mutex);  in msi_free_msi_descs_range()
184 	dev->msi.data = NULL;  in msi_device_data_release()
188  * msi_setup_device_data - Setup MSI device data
189  * @dev:	Device for which MSI device data should be set up
193  * This can be called more than once for @dev. If the MSI device data is
202 	if (dev->msi.data)  in msi_setup_device_data()
217 	dev->msi.data = md;  in msi_setup_device_data()
223  * msi_lock_descs - Lock the MSI descriptor storage of a device
228 	mutex_lock(&dev->msi.data->mutex);  in msi_lock_descs()
233  * msi_unlock_descs - Unlock the MSI descriptor storage of a device
239 	dev->msi.data->__iter_idx = MSI_MAX_INDEX;  in msi_unlock_descs()
240 	mutex_unlock(&dev->msi.data->mutex);  in msi_unlock_descs()
257  * msi_first_desc - Get the first MSI descriptor of a device
261  * Must be called with the MSI descriptor mutex held, i.e. msi_lock_descs()
264  * Return: Pointer to the first MSI descriptor matching the search
269 	struct msi_device_data *md = dev->msi.data;  in msi_first_desc()
282  * msi_next_desc - Get the next MSI descriptor of a device
288  * to be done within the same MSI mutex held region.
290  * Return: Pointer to the next MSI descriptor matching the search
295 	struct msi_device_data *md = dev->msi.data;  in msi_next_desc()
311  * msi_get_virq - Return Linux interrupt number of a MSI interrupt
313  * @index:	MSI interrupt index to look for (0-based)
323 	if (!dev->msi.data)  in msi_get_virq()
329 	desc = xa_load(&dev->msi.data->__store, pcimsi ? 0 : index);  in msi_get_virq()
332 		 * PCI-MSI has only one descriptor for multiple interrupts.  in msi_get_virq()
333 		 * PCI-MSIX and platform MSI use a descriptor per  in msi_get_virq()
366 	/* MSI vs. MSIX is per device not per interrupt */  in msi_mode_show()
369 	return sysfs_emit(buf, "%s\n", is_msix ? "msix" : "msi");  in msi_mode_show()
474 	 * If the MSI provider has messed with the second message and  in msi_check_level()
483  * msi_domain_set_affinity - Generic affinity setter function for MSI domains
488  * Intended to be used by MSI interrupt controllers which are
672  * msi_create_irq_domain - Create an MSI interrupt domain
674  * @info:	MSI domain info
726 		desc = xa_load(&dev->msi.data->__store, virq);  in msi_domain_populate_irqs()
751  * dummy vector to the device. If the PCI/MSI device does not support
757  * used. For now reservation mode is restricted to PCI/MSI.
780 	 * Checking the first MSI descriptor is sufficient. MSIX supports  in msi_check_reservation_mode()
781 	 * masking and MSI does so when the can_mask attribute is set.  in msi_check_reservation_mode()
800 	/* Let a failed PCI multi MSI allocation retry */  in msi_handle_pci_fail()
870 	 * the MSI entries before the PCI layer enables MSI in the  in __msi_domain_alloc_irqs()
871 	 * card. Otherwise the card latches a random msi message.  in __msi_domain_alloc_irqs()
883 		 * MSI affinity setting requires a special quirk (X86) when  in __msi_domain_alloc_irqs()
927  * msi_domain_alloc_irqs_descs_locked - Allocate interrupts from a MSI interrupt domain
934  * pair. Use this for MSI irqdomains which implement their own vector
946 	lockdep_assert_held(&dev->msi.data->mutex);  in msi_domain_alloc_irqs_descs_locked()
959  * msi_domain_alloc_irqs - Allocate interrupts from a MSI interrupt domain
984 	/* Only handle MSI entries which have an interrupt associated */  in __msi_domain_free_irqs()
1008 …* msi_domain_free_irqs_descs_locked - Free interrupts from a MSI interrupt @domain associated to @…
1014  * pair. Use this for MSI irqdomains which implement their own vector
1022 	lockdep_assert_held(&dev->msi.data->mutex);  in msi_domain_free_irqs_descs_locked()
1029  * msi_domain_free_irqs - Free interrupts from a MSI interrupt @domain associated to @dev
1042  * msi_get_domain_info - Get the MSI interrupt domain info for @domain