2 * Interrupt handling for IPR-based IRQ.
4 * Copyright (C) 1999 Niibe Yutaka & Takeshi Yaegashi
5 * Copyright (C) 2000 Kazumoto Kojima
6 * Copyright (C) 2003 Takashi Kusuda <kusuda-takashi@hitachi-ul.co.jp>
7 * Copyright (C) 2006 Paul Mundt
10 * On-chip supporting modules (TMU, RTC, etc.).
11 * On-chip supporting modules for SH7709/SH7709A/SH7729/SH7300.
12 * Hitachi SolutionEngine external I/O:
13 * MS7709SE01, MS7709ASE01, and MS7750SE01
15 * This file is subject to the terms and conditions of the GNU General Public
16 * License. See the file "COPYING" in the main directory of this archive
19 #include <linux/init.h>
20 #include <linux/irq.h>
21 #include <linux/module.h>
22 #include <asm/system.h>
24 #include <asm/machvec.h>
27 static void disable_ipr_irq(unsigned int irq)
29 struct ipr_data *p = get_irq_chip_data(irq);
30 int shift = p->shift*4;
31 /* Set the priority in IPR to 0 */
32 ctrl_outw(ctrl_inw(p->addr) & (0xffff ^ (0xf << shift)), p->addr);
35 static void enable_ipr_irq(unsigned int irq)
37 struct ipr_data *p = get_irq_chip_data(irq);
38 int shift = p->shift*4;
39 /* Set priority in IPR back to original value */
40 ctrl_outw(ctrl_inw(p->addr) | (p->priority << shift), p->addr);
43 static struct irq_chip ipr_irq_chip = {
45 .mask = disable_ipr_irq,
46 .unmask = enable_ipr_irq,
47 .mask_ack = disable_ipr_irq,
50 void make_ipr_irq(struct ipr_data *table, unsigned int nr_irqs)
54 for (i = 0; i < nr_irqs; i++) {
55 unsigned int irq = table[i].irq;
56 disable_irq_nosync(irq);
57 set_irq_chip_and_handler_name(irq, &ipr_irq_chip,
58 handle_level_irq, "level");
59 set_irq_chip_data(irq, &table[i]);
63 EXPORT_SYMBOL(make_ipr_irq);
65 static struct ipr_data sys_ipr_map[] = {
66 #ifndef CONFIG_CPU_SUBTYPE_SH7780
67 { TIMER_IRQ, TIMER_IPR_ADDR, TIMER_IPR_POS, TIMER_PRIORITY },
68 { TIMER1_IRQ, TIMER1_IPR_ADDR, TIMER1_IPR_POS, TIMER1_PRIORITY },
70 { RTC_IRQ, RTC_IPR_ADDR, RTC_IPR_POS, RTC_PRIORITY },
73 { SCI_ERI_IRQ, SCI_IPR_ADDR, SCI_IPR_POS, SCI_PRIORITY },
74 { SCI_RXI_IRQ, SCI_IPR_ADDR, SCI_IPR_POS, SCI_PRIORITY },
75 { SCI_TXI_IRQ, SCI_IPR_ADDR, SCI_IPR_POS, SCI_PRIORITY },
78 { SCIF1_ERI_IRQ, SCIF1_IPR_ADDR, SCIF1_IPR_POS, SCIF1_PRIORITY },
79 { SCIF1_RXI_IRQ, SCIF1_IPR_ADDR, SCIF1_IPR_POS, SCIF1_PRIORITY },
80 { SCIF1_BRI_IRQ, SCIF1_IPR_ADDR, SCIF1_IPR_POS, SCIF1_PRIORITY },
81 { SCIF1_TXI_IRQ, SCIF1_IPR_ADDR, SCIF1_IPR_POS, SCIF1_PRIORITY },
83 #if defined(CONFIG_CPU_SUBTYPE_SH7300)
84 { SCIF0_IRQ, SCIF0_IPR_ADDR, SCIF0_IPR_POS, SCIF0_PRIORITY },
85 { DMTE2_IRQ, DMA1_IPR_ADDR, DMA1_IPR_POS, DMA1_PRIORITY },
86 { DMTE3_IRQ, DMA1_IPR_ADDR, DMA1_IPR_POS, DMA1_PRIORITY },
87 { VIO_IRQ, VIO_IPR_ADDR, VIO_IPR_POS, VIO_PRIORITY },
90 { SCIF_ERI_IRQ, SCIF_IPR_ADDR, SCIF_IPR_POS, SCIF_PRIORITY },
91 { SCIF_RXI_IRQ, SCIF_IPR_ADDR, SCIF_IPR_POS, SCIF_PRIORITY },
92 { SCIF_BRI_IRQ, SCIF_IPR_ADDR, SCIF_IPR_POS, SCIF_PRIORITY },
93 { SCIF_TXI_IRQ, SCIF_IPR_ADDR, SCIF_IPR_POS, SCIF_PRIORITY },
96 { IRDA_ERI_IRQ, IRDA_IPR_ADDR, IRDA_IPR_POS, IRDA_PRIORITY },
97 { IRDA_RXI_IRQ, IRDA_IPR_ADDR, IRDA_IPR_POS, IRDA_PRIORITY },
98 { IRDA_BRI_IRQ, IRDA_IPR_ADDR, IRDA_IPR_POS, IRDA_PRIORITY },
99 { IRDA_TXI_IRQ, IRDA_IPR_ADDR, IRDA_IPR_POS, IRDA_PRIORITY },
101 #if defined(CONFIG_CPU_SUBTYPE_SH7707) || defined(CONFIG_CPU_SUBTYPE_SH7709) || \
102 defined(CONFIG_CPU_SUBTYPE_SH7706) || \
103 defined(CONFIG_CPU_SUBTYPE_SH7300) || defined(CONFIG_CPU_SUBTYPE_SH7705)
105 * Initialize the Interrupt Controller (INTC)
106 * registers to their power on values
110 * Enable external irq (INTC IRQ mode).
111 * You should set corresponding bits of PFC to "00"
112 * to enable these interrupts.
114 { IRQ0_IRQ, IRQ0_IPR_ADDR, IRQ0_IPR_POS, IRQ0_PRIORITY },
115 { IRQ1_IRQ, IRQ1_IPR_ADDR, IRQ1_IPR_POS, IRQ1_PRIORITY },
116 { IRQ2_IRQ, IRQ2_IPR_ADDR, IRQ2_IPR_POS, IRQ2_PRIORITY },
117 { IRQ3_IRQ, IRQ3_IPR_ADDR, IRQ3_IPR_POS, IRQ3_PRIORITY },
118 { IRQ4_IRQ, IRQ4_IPR_ADDR, IRQ4_IPR_POS, IRQ4_PRIORITY },
119 { IRQ5_IRQ, IRQ5_IPR_ADDR, IRQ5_IPR_POS, IRQ5_PRIORITY },
124 void __init init_IRQ(void)
126 make_ipr_irq(sys_ipr_map, ARRAY_SIZE(sys_ipr_map));
128 #ifdef CONFIG_CPU_HAS_PINT_IRQ
132 #ifdef CONFIG_CPU_HAS_INTC2_IRQ
135 /* Perform the machine specific initialisation */
136 if (sh_mv.mv_init_irq != NULL)
139 irq_ctx_init(smp_processor_id());
142 #if !defined(CONFIG_CPU_HAS_PINT_IRQ)
143 int ipr_irq_demux(int irq)