pci/msi/irqdomain.c

3  * PCI Message Signaled Interrupt (MSI) - irqdomain support
9 #include "msi.h"
36  * pci_msi_domain_write_msg - Helper to write MSI message to PCI config space
37  * @irq_data:	Pointer to interrupt data of the MSI interrupt
45 	 * For MSI-X desc->irq is always equal to irq_data->irq. For  in pci_msi_domain_write_msg()
46 	 * MSI only the first interrupt of MULTI MSI passes the test.  in pci_msi_domain_write_msg()
53  * pci_msi_domain_calc_hwirq - Generate a unique ID for an MSI source
54  * @desc:	Pointer to the MSI descriptor
104  * pci_msi_create_irq_domain - Create a MSI interrupt domain
106  * @info:	MSI domain info
109  * Updates the domain and chip ops and creates a MSI interrupt domain.
126 	/* Let the core code free MSI descriptors when freeing interrupts */  in pci_msi_create_irq_domain()
133 	/* PCI-MSI is oneshot-safe */  in pci_msi_create_irq_domain()
143  * Per device MSI[-X] domain functionality
178 		.name			= "PCI-MSI",
208 	/* Don't fiddle with preallocated MSI descriptors */  in pci_msix_prepare_desc()
252  * pci_setup_msi_device_domain - Setup a device MSI interrupt domain
257  *	- The device does not have a MSI parent irq domain associated,
259  *	  PCI/MSI domain models working
260  *	- The MSI domain exists already
261  *	- The MSI domain was successfully allocated
263  *	- MSI-X is enabled
266  * The created MSI domain is preserved until:
268  *	- MSI is disabled and a MSI-X domain is created
284  * pci_setup_msix_device_domain - Setup a device MSI-X interrupt domain
286  * @hwsize:	The size of the MSI-X vector table
290  *	- The device does not have a MSI parent irq domain associated,
292  *	  PCI/MSI domain models working
293  *	- The MSI-X domain exists already
294  *	- The MSI-X domain was successfully allocated
296  *	- MSI is enabled
299  * The created MSI-X domain is preserved until:
301  *	- MSI-X is disabled and a MSI domain is created
341 		 * For "global" PCI/MSI interrupt domains the associated  in pci_msi_domain_supports()
349 		 * For MSI parent domains the supported feature set  in pci_msi_domain_supports()
353 		 * expanding the PCI/MSI functionality.  in pci_msi_domain_supports()
364  * @template:	The MSI info template which describes the domain
421  * Users of the generic MSI infrastructure expect a device to have a single ID,
445  * pci_msi_domain_get_msi_rid - Get the MSI requester id (RID)
469  * pci_msi_get_device_domain - Get the MSI domain for a given PCI device
472  * Use the firmware data to find a device-specific MSI domain
475  * Returns: The corresponding MSI domain or NULL if none has been found.