1 // SPDX-License-Identifier: GPL-2.0-only
30  * struct ps3_bmp - a per cpu irq status and mask bitmap structure
36  * The HV maintains per SMT thread mappings of HV outlet to HV plug on
39  * are registered with the HV through lv1_configure_irq_state_bitmap().
40  * The HV requires that the 512 bits of status + mask not cross a page
44  * The HV supports 256 plugs per thread, assigned as {0..255}, for a total
46  * implementation equates HV plug value to Linux virq value, constrains each
68  * struct ps3_private - a per cpu data structure
72  * @ppe_id: HV logical_ppe_id
73  * @thread_id: HV thread_id
89  * ps3_chip_mask - Set an interrupt mask bit in ps3_bmp.
101 		pd->thread_id, d->irq);  in ps3_chip_mask()
104 	clear_bit(63 - d->irq, &pd->bmp.mask);  in ps3_chip_mask()
105 	lv1_did_update_interrupt_mask(pd->ppe_id, pd->thread_id);  in ps3_chip_mask()
110  * ps3_chip_unmask - Clear an interrupt mask bit in ps3_bmp.
122 		pd->thread_id, d->irq);  in ps3_chip_unmask()
125 	set_bit(63 - d->irq, &pd->bmp.mask);  in ps3_chip_unmask()
126 	lv1_did_update_interrupt_mask(pd->ppe_id, pd->thread_id);  in ps3_chip_unmask()
131  * ps3_chip_eoi - HV end-of-interrupt.
141 	/* non-IPIs are EOIed here. */  in ps3_chip_eoi()
143 	if (!test_bit(63 - d->irq, &pd->ipi_mask))  in ps3_chip_eoi()
144 		lv1_end_of_interrupt_ext(pd->ppe_id, pd->thread_id, d->irq);  in ps3_chip_eoi()
148  * ps3_irq_chip - Represents the ps3_bmp as a Linux struct irq_chip.
159  * ps3_virq_setup - virq related setup.
162  * @outlet: The HV outlet from the various create outlet routines.
187 		result = -ENOMEM;  in ps3_virq_setup()
213  * ps3_virq_destroy - virq related teardown.
224 		__LINE__, pd->ppe_id, pd->thread_id, virq);  in ps3_virq_destroy()
229 	DBG("%s:%d <-\n", __func__, __LINE__);  in ps3_virq_destroy()
234  * ps3_irq_plug_setup - Generic outlet and virq related setup.
237  * @outlet: The HV outlet from the various create outlet routines.
260 	result = lv1_connect_irq_plug_ext(pd->ppe_id, pd->thread_id, *virq,  in ps3_irq_plug_setup()
266 		result = -EPERM;  in ps3_irq_plug_setup()
280  * ps3_irq_plug_destroy - Generic outlet and virq related teardown.
294 		__LINE__, pd->ppe_id, pd->thread_id, virq);  in ps3_irq_plug_destroy()
298 	result = lv1_disconnect_irq_plug_ext(pd->ppe_id, pd->thread_id, virq);  in ps3_irq_plug_destroy()
311  * ps3_event_receive_port_setup - Setup an event receive port.
317  * arrange to receive interrupts from system-bus devices, or with
343  * ps3_event_receive_port_destroy - Destroy an event receive port.
355 	DBG(" -> %s:%d virq %u\n", __func__, __LINE__, virq);  in ps3_event_receive_port_destroy()
370 	DBG(" <- %s:%d\n", __func__, __LINE__);  in ps3_event_receive_port_destroy()
380  * ps3_sb_event_receive_port_setup - Setup a system bus event receive port.
393 	/* this should go in system-bus.c */  in ps3_sb_event_receive_port_setup()
402 	result = lv1_connect_interrupt_event_receive_port(dev->bus_id,  in ps3_sb_event_receive_port_setup()
403 		dev->dev_id, virq_to_hw(*virq), dev->interrupt_id);  in ps3_sb_event_receive_port_setup()
415 		dev->interrupt_id, *virq);  in ps3_sb_event_receive_port_setup()
424 	/* this should go in system-bus.c */  in ps3_sb_event_receive_port_destroy()
428 	DBG(" -> %s:%d: interrupt_id %u, virq %u\n", __func__, __LINE__,  in ps3_sb_event_receive_port_destroy()
429 		dev->interrupt_id, virq);  in ps3_sb_event_receive_port_destroy()
431 	result = lv1_disconnect_interrupt_event_receive_port(dev->bus_id,  in ps3_sb_event_receive_port_destroy()
432 		dev->dev_id, virq_to_hw(virq), dev->interrupt_id);  in ps3_sb_event_receive_port_destroy()
450 	DBG(" <- %s:%d\n", __func__, __LINE__);  in ps3_sb_event_receive_port_destroy()
456  * ps3_io_irq_setup - Setup a system bus io irq.
462  * An io irq represents a non-virtualized device interrupt.  interrupt_id
513  * ps3_vuart_irq_setup - Setup the system virtual uart virq.
570  * ps3_spe_irq_setup - Setup an spe virq.
614 #define PS3_INVALID_OUTLET ((irq_hw_number_t)-1)
639 	spin_lock_irqsave(&pd->bmp_lock, flags);  in _dump_bmp()
640 	_dump_64_bmp("stat", &pd->bmp.status, pd->thread_id, func, line);  in _dump_bmp()
641 	_dump_64_bmp("mask", (u64*)&pd->bmp.mask, pd->thread_id, func, line);  in _dump_bmp()
642 	spin_unlock_irqrestore(&pd->bmp_lock, flags);  in _dump_bmp()
651 	spin_lock_irqsave(&pd->bmp_lock, flags);  in _dump_mask()
652 	_dump_64_bmp("mask", (u64*)&pd->bmp.mask, pd->thread_id, func, line);  in _dump_mask()
653 	spin_unlock_irqrestore(&pd->bmp_lock, flags);  in _dump_mask()
686 	set_bit(63 - virq, &pd->ipi_debug_brk_mask);  in ps3_register_ipi_debug_brk()
689 		cpu, virq, pd->ipi_debug_brk_mask);  in ps3_register_ipi_debug_brk()
696 	set_bit(63 - virq, &pd->ipi_mask);  in ps3_register_ipi_irq()
699 		cpu, virq, pd->ipi_mask);  in ps3_register_ipi_irq()
705 	u64 x = (pd->bmp.status & pd->bmp.mask);  in ps3_get_irq()
710 	if (x & pd->ipi_debug_brk_mask)  in ps3_get_irq()
711 		x &= pd->ipi_debug_brk_mask;  in ps3_get_irq()
718 			__LINE__, pd->thread_id);  in ps3_get_irq()
734 	if (test_bit(63 - plug, &pd->ipi_mask))  in ps3_get_irq()
735 		lv1_end_of_interrupt_ext(pd->ppe_id, pd->thread_id, plug);  in ps3_get_irq()
752 		lv1_get_logical_ppe_id(&pd->ppe_id);  in ps3_init_IRQ()
753 		pd->thread_id = get_hard_smp_processor_id(cpu);  in ps3_init_IRQ()
754 		spin_lock_init(&pd->bmp_lock);  in ps3_init_IRQ()
757 			__func__, __LINE__, pd->ppe_id, pd->thread_id,  in ps3_init_IRQ()
758 			ps3_mm_phys_to_lpar(__pa(&pd->bmp)));  in ps3_init_IRQ()
760 		result = lv1_configure_irq_state_bitmap(pd->ppe_id,  in ps3_init_IRQ()
761 			pd->thread_id, ps3_mm_phys_to_lpar(__pa(&pd->bmp)));  in ps3_init_IRQ()