2 * linux/arch/h8300/kernel/irq_s.c
4 * Copyright 2014 Yoshinori Sato <ysato@users.sourceforge.jp>
11 static const unsigned char ipr_table[] = {
12 0x03, 0x02, 0x01, 0x00, 0x13, 0x12, 0x11, 0x10, /* 16 - 23 */
13 0x23, 0x22, 0x21, 0x20, 0x33, 0x32, 0x31, 0x30, /* 24 - 31 */
14 0x43, 0x42, 0x41, 0x40, 0x53, 0x53, 0x52, 0x52, /* 32 - 39 */
15 0x51, 0x51, 0x51, 0x51, 0x51, 0x51, 0x51, 0x51, /* 40 - 47 */
16 0x50, 0x50, 0x50, 0x50, 0x63, 0x63, 0x63, 0x63, /* 48 - 55 */
17 0x62, 0x62, 0x62, 0x62, 0x62, 0x62, 0x62, 0x62, /* 56 - 63 */
18 0x61, 0x61, 0x61, 0x61, 0x60, 0x60, 0x60, 0x60, /* 64 - 71 */
19 0x73, 0x73, 0x73, 0x73, 0x72, 0x72, 0x72, 0x72, /* 72 - 79 */
20 0x71, 0x71, 0x71, 0x71, 0x70, 0x83, 0x82, 0x81, /* 80 - 87 */
21 0x80, 0x80, 0x80, 0x80, 0x93, 0x93, 0x93, 0x93, /* 88 - 95 */
22 0x92, 0x92, 0x92, 0x92, 0x91, 0x91, 0x91, 0x91, /* 96 - 103 */
23 0x90, 0x90, 0x90, 0x90, 0xa3, 0xa3, 0xa3, 0xa3, /* 104 - 111 */
24 0xa2, 0xa2, 0xa2, 0xa2, 0xa1, 0xa1, 0xa1, 0xa1, /* 112 - 119 */
25 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, /* 120 - 127 */
28 static void h8s_disable_irq(struct irq_data *data)
35 addr = IPRA + ((ipr_table[irq - 16] & 0xf0) >> 3);
36 pos = (ipr_table[irq - 16] & 0x0f) * 4;
37 pri = ~(0x000f << pos);
38 pri &= ctrl_inw(addr);
42 static void h8s_enable_irq(struct irq_data *data)
49 addr = IPRA + ((ipr_table[irq - 16] & 0xf0) >> 3);
50 pos = (ipr_table[irq - 16] & 0x0f) * 4;
51 pri = ~(0x000f << pos);
52 pri &= ctrl_inw(addr);
57 struct irq_chip h8s_irq_chip = {
59 .irq_enable = h8s_enable_irq,
60 .irq_disable = h8s_disable_irq,
63 void __init h8300_init_ipr(void)
67 /* All interrupt priority is 1 */
69 for (n = 0; n <= 'k' - 'a'; n++)
70 ctrl_outw(0x1111, IPRA + (n * 2));