1 // SPDX-License-Identifier: GPL-2.0
29  * SBUS interrupts are encodes as a combination of board, level and slot.
38 static unsigned int sun4d_encode_irq(int board, int lvl, int slot)  in sun4d_encode_irq()  argument
40 	return (board + 1) << 5 | (lvl << 2) | slot;  in sun4d_encode_irq()
55 /* Specify which cpu handle interrupts from which board.
56  * Index is board - value is cpu.
64 	2,
82 /* SBUS interrupts are encoded integers including the board number
92  * 2) For each bus showing interrupt pending from #1, read the
107 	sbil = (sbusl << 2);  in sun4d_sbus_handler_irq()
138 				next = p->next;  in sun4d_sbus_handler_irq()
139 				generic_handle_irq(p->irq);  in sun4d_sbus_handler_irq()
150 	/* SBUS IRQ level (1 - 7) */  in sun4d_handler_irq()
177 			next = p->next;  in sun4d_handler_irq()
178 			generic_handle_irq(p->irq);  in sun4d_handler_irq()
195 	int cpuid = handler_data->cpuid;  in sun4d_mask_irq()
198 	real_irq = handler_data->real_irq;  in sun4d_mask_irq()
213 	int cpuid = handler_data->cpuid;  in sun4d_unmask_irq()
216 	real_irq = handler_data->real_irq;  in sun4d_unmask_irq()
229 	irq_link(data->irq);  in sun4d_startup_irq()
237 	irq_unlink(data->irq);  in sun4d_shutdown_irq()
256 	if (cpuid == -1)  in sun4d_distribute_irqs()
259 		int devid = of_getintprop_default(dp, "device-id", 0);  in sun4d_distribute_irqs()
260 		int board = of_getintprop_default(dp, "board#", 0);  in sun4d_distribute_irqs()  local
261 		board_to_cpu[board] = cpuid;  in sun4d_distribute_irqs()
270 	sbus_readl(&sun4d_timers->l10_timer_limit);  in sun4d_clear_clock_irq()
291                                             unsigned int board)  in _sun4d_build_device_irq()  argument
299 			real_irq, pil, board);  in _sun4d_build_device_irq()
312 	handler_data->cpuid    = board_to_cpu[board];  in _sun4d_build_device_irq()
313 	handler_data->real_irq = real_irq;  in _sun4d_build_device_irq()
327 	struct device_node *dp = op->dev.of_node;  in sun4d_build_device_irq()
328 	struct device_node *board_parent, *bus = dp->parent;  in sun4d_build_device_irq()
333 	int board, slot;  in sun4d_build_device_irq()  local
339 			bus_connection = "io-unit";  in sun4d_build_device_irq()
344 			bus_connection = "cpu-unit";  in sun4d_build_device_irq()
348 		bus = bus->parent;  in sun4d_build_device_irq()
357 	slot = regs->which_io;  in sun4d_build_device_irq()
360 	 * If Bus nodes parent is not io-unit/cpu-unit or the io-unit/cpu-unit  in sun4d_build_device_irq()
361 	 * lacks a "board#" property, something is very wrong.  in sun4d_build_device_irq()
363 	if (!of_node_name_eq(bus->parent, bus_connection)) {  in sun4d_build_device_irq()
368 	board_parent = bus->parent;  in sun4d_build_device_irq()
369 	board = of_getintprop_default(board_parent, "board#", -1);  in sun4d_build_device_irq()
370 	if (board == -1) {  in sun4d_build_device_irq()
371 		printk(KERN_ERR "%pOF: Error, lacks board# property.\n",  in sun4d_build_device_irq()
378 		pil = sun4d_encode_irq(board, sbusl, slot);  in sun4d_build_device_irq()
382 	irq = _sun4d_build_device_irq(real_irq, pil, board);  in sun4d_build_device_irq()
387 static unsigned int sun4d_build_timer_irq(unsigned int board,  in sun4d_build_timer_irq()  argument
390 	return _sun4d_build_device_irq(real_irq, real_irq, board);  in sun4d_build_timer_irq()
398 	struct tt_entry *trap_table = &sparc_ttable[SP_TRAP_IRQ1 + (14 - 1)];  in sun4d_fixup_trap_table()
401 	lvl14_save[2] += smp4d_ticker - real_irq_entry;  in sun4d_fixup_trap_table()
409 	trap_table->inst_one = lvl14_save[0];  in sun4d_fixup_trap_table()
410 	trap_table->inst_two = lvl14_save[1];  in sun4d_fixup_trap_table()
411 	trap_table->inst_three = lvl14_save[2];  in sun4d_fixup_trap_table()
412 	trap_table->inst_four = lvl14_save[3];  in sun4d_fixup_trap_table()
413 	local_ops->cache_all();  in sun4d_fixup_trap_table()
425 	int board;  in sun4d_init_timers()  local
427 	dp = of_find_node_by_name(NULL, "cpu-unit");  in sun4d_init_timers()
429 		prom_printf("sun4d_init_timers: Unable to find cpu-unit\n");  in sun4d_init_timers()
433 	/* Which cpu-unit we use is arbitrary, we can view the bootbus timer  in sun4d_init_timers()
443 	board = of_getintprop_default(dp, "board#", -1);  in sun4d_init_timers()
444 	if (board == -1) {  in sun4d_init_timers()
445 		prom_printf("sun4d_init_timers: No board# property on cpu-unit\n");  in sun4d_init_timers()
452 	res.end = reg[2] - 1;  in sun4d_init_timers()
462 	sparc_config.cs_period = SBUS_CLOCK_RATE * 2;  /* 2 seconds */  in sun4d_init_timers()
469 		    &sun4d_timers->l10_timer_limit);  in sun4d_init_timers()
471 	master_l10_counter = &sun4d_timers->l10_cur_count;  in sun4d_init_timers()
473 	irq = sun4d_build_timer_irq(board, SUN4D_TIMER_IRQ);  in sun4d_init_timers()
491 		int devid = of_getintprop_default(dp, "device-id", 0);  in sun4d_init_sbi_irq()
492 		int board = of_getintprop_default(dp, "board#", 0);  in sun4d_init_sbi_irq()  local
496 		board_to_cpu[board] = target_cpu;  in sun4d_init_sbi_irq()
502 			       mask, board);  in sun4d_init_sbi_irq()