| Steven J. Hill | 3070033 | 2012-05-30 21:02:49 +0000 | [diff] [blame] | 1 | /* |
| 2 | * This file is subject to the terms and conditions of the GNU General Public |
| 3 | * License. See the file "COPYING" in the main directory of this archive |
| 4 | * for more details. |
| 5 | * |
| 6 | * Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved. |
| 7 | */ |
| 8 | #include <linux/init.h> |
| 9 | #include <linux/irq.h> |
| Andrew Bresticker | 4060bbe | 2014-10-20 12:03:53 -0700 | [diff] [blame] | 10 | #include <linux/irqchip/mips-gic.h> |
| Steven J. Hill | 3070033 | 2012-05-30 21:02:49 +0000 | [diff] [blame] | 11 | #include <linux/io.h> |
| 12 | |
| Steven J. Hill | 3070033 | 2012-05-30 21:02:49 +0000 | [diff] [blame] | 13 | #include <asm/irq_cpu.h> |
| 14 | #include <asm/setup.h> |
| 15 | |
| 16 | #include <asm/mips-boards/sead3int.h> |
| 17 | |
| 18 | #define SEAD_CONFIG_GIC_PRESENT_SHF 1 |
| 19 | #define SEAD_CONFIG_GIC_PRESENT_MSK (1 << SEAD_CONFIG_GIC_PRESENT_SHF) |
| 20 | #define SEAD_CONFIG_BASE 0x1b100110 |
| 21 | #define SEAD_CONFIG_SIZE 4 |
| 22 | |
| Andrew Bresticker | 327b8c8 | 2014-10-20 12:03:50 -0700 | [diff] [blame] | 23 | static void __iomem *sead3_config_reg; |
| Steven J. Hill | 3070033 | 2012-05-30 21:02:49 +0000 | [diff] [blame] | 24 | |
| Steven J. Hill | 3070033 | 2012-05-30 21:02:49 +0000 | [diff] [blame] | 25 | void __init arch_init_irq(void) |
| 26 | { |
| Andrew Bresticker | a393d93 | 2014-09-18 14:47:30 -0700 | [diff] [blame] | 27 | if (!cpu_has_veic) |
| Steven J. Hill | 3070033 | 2012-05-30 21:02:49 +0000 | [diff] [blame] | 28 | mips_cpu_irq_init(); |
| 29 | |
| Andrew Bresticker | 327b8c8 | 2014-10-20 12:03:50 -0700 | [diff] [blame] | 30 | sead3_config_reg = ioremap_nocache(SEAD_CONFIG_BASE, SEAD_CONFIG_SIZE); |
| 31 | gic_present = (__raw_readl(sead3_config_reg) & |
| 32 | SEAD_CONFIG_GIC_PRESENT_MSK) >> |
| Steven J. Hill | 3070033 | 2012-05-30 21:02:49 +0000 | [diff] [blame] | 33 | SEAD_CONFIG_GIC_PRESENT_SHF; |
| 34 | pr_info("GIC: %spresent\n", (gic_present) ? "" : "not "); |
| 35 | pr_info("EIC: %s\n", |
| 36 | (current_cpu_data.options & MIPS_CPU_VEIC) ? "on" : "off"); |
| 37 | |
| 38 | if (gic_present) |
| Andrew Bresticker | 18743d2 | 2014-09-18 14:47:24 -0700 | [diff] [blame] | 39 | gic_init(GIC_BASE_ADDR, GIC_ADDRSPACE_SZ, CPU_INT_GIC, |
| 40 | MIPS_GIC_IRQ_BASE); |
| Steven J. Hill | 3070033 | 2012-05-30 21:02:49 +0000 | [diff] [blame] | 41 | } |
| 42 | |