10 #include <linux/msi.h>
23  * Each bit in msi_free_irq_bitmask represents a MSI interrupt that is
31  * is used so we can disable all of the MSI interrupts when a device
43  * Number of MSI IRQs used. This variable is set up in
49  * arch_setup_msi_irq() - setup MSI IRQs for a device
50  * @dev:    Device requesting MSI interrupts
51  * @desc:   MSI descriptor
53  * Called when a driver requests MSI interrupts instead of the
55  * for MSI devices that support them. A device can override this by
56  * programming the MSI control bits [6:4] before calling
76 	 * Read the MSI config to figure out how many IRQs this device  in arch_setup_msi_irq()
120 	 * bits. This represents an MSI interrupt number that isn't in  in arch_setup_msi_irq()
144 			panic("arch_setup_msi_irq: Unable to find a free MSI interrupt");  in arch_setup_msi_irq()
147 	/* MSI interrupts start at logical IRQ OCTEON_IRQ_MSI_BIT0 */  in arch_setup_msi_irq()
190  * arch_teardown_msi_irq() - release MSI IRQs for a device
193  * Called when a device no longer needs its MSI interrupts. All
194  * MSI interrupts for the device are freed.
206 		      "MSI interrupt (%d)", irq);  in arch_teardown_msi_irq()
228 		panic("arch_teardown_msi_irq: Attempted to teardown MSI "  in arch_teardown_msi_irq()
276 	.name = "MSI",
284 	 * Octeon PCI doesn't have the ability to mask/unmask MSI  in octeon_irq_msi_enable_pci()
286 	 * in groups of 16, we simple assume MSI devices are well  in octeon_irq_msi_enable_pci()
287 	 * behaved. MSI interrupts are always enable and the ACK is  in octeon_irq_msi_enable_pci()
298 	.name = "MSI",
304  * Called by the interrupt handling code when an MSI interrupt
341  * Initializes the MSI interrupt handling code
346 	struct irq_chip *msi;  in octeon_msi_initialize()  local
359 		msi = &octeon_irq_chip_msi_pcie;  in octeon_msi_initialize()
370 		msi = &octeon_irq_chip_msi_pci;  in octeon_msi_initialize()
374 		irq_set_chip_and_handler(irq, msi, handle_simple_irq);  in octeon_msi_initialize()
378 				0, "MSI[0:63]", octeon_msi_interrupt0))  in octeon_msi_initialize()
382 				0, "MSI[64:127]", octeon_msi_interrupt1))  in octeon_msi_initialize()
386 				0, "MSI[127:191]", octeon_msi_interrupt2))  in octeon_msi_initialize()
390 				0, "MSI[192:255]", octeon_msi_interrupt3))  in octeon_msi_initialize()
396 				0, "MSI[0:15]", octeon_msi_interrupt0))  in octeon_msi_initialize()
400 				0, "MSI[16:31]", octeon_msi_interrupt0))  in octeon_msi_initialize()
404 				0, "MSI[32:47]", octeon_msi_interrupt0))  in octeon_msi_initialize()
408 				0, "MSI[48:63]", octeon_msi_interrupt0))  in octeon_msi_initialize()