2  * Heathrow PIC support (OldWorld PowerMac)
33 static inline int heathrow_check_irq(HeathrowPICState *pic)  in heathrow_check_irq()  argument
35     return (pic->events | (pic->levels & pic->level_triggered)) & pic->mask;  in heathrow_check_irq()
53     HeathrowPICState *pic;  in heathrow_write()  local
60     pic = &s->pics[n];  in heathrow_write()
63         pic->mask = value;  in heathrow_write()
68         value &= ~pic->level_triggered;  in heathrow_write()
69         pic->events &= ~value;  in heathrow_write()
81     HeathrowPICState *pic;  in heathrow_read()  local
89         pic = &s->pics[n];  in heathrow_read()
92             value = pic->events;  in heathrow_read()
95             value = pic->mask;  in heathrow_read()
98             value = pic->levels;  in heathrow_read()
118     HeathrowPICState *pic;  in heathrow_set_irq()  local
122     pic = &s->pics[1 - (num >> 5)];  in heathrow_set_irq()
124     last_level = (pic->levels & irq_bit) ? 1 : 0;  in heathrow_set_irq()
127         pic->events |= irq_bit & ~pic->level_triggered;  in heathrow_set_irq()
128         pic->levels |= irq_bit;  in heathrow_set_irq()
130         pic->levels &= ~irq_bit;  in heathrow_set_irq()
183                           "heathrow-pic", 0x1000);  in heathrow_init()