4 Copyright 2008, 2009 Michel Pollet <buserror@gmail.com>
6 This file is part of simavr.
8 simavr is free software: you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation, either version 3 of the License, or
11 (at your option) any later version.
13 simavr is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with simavr. If not, see <http://www.gnu.org/licenses/>.
28 int avr_ioctl(avr_t *avr, uint32_t ctl, void * io_param)
30 avr_io_t * port = avr->io_port;
32 while (port && res == -1) {
34 res = port->ioctl(port, ctl, io_param);
40 void avr_register_io(avr_t *avr, avr_io_t * io)
42 io->next = avr->io_port;
47 void avr_register_io_read(avr_t *avr, avr_io_addr_t addr, avr_io_read_t readp, void * param)
49 avr_io_addr_t a = AVR_DATA_TO_IO(addr);
50 avr->io[a].r.param = param;
51 avr->io[a].r.c = readp;
54 void avr_register_io_write(avr_t *avr, avr_io_addr_t addr, avr_io_write_t writep, void * param)
56 avr_io_addr_t a = AVR_DATA_TO_IO(addr);
57 avr->io[a].w.param = param;
58 avr->io[a].w.c = writep;
61 struct avr_irq_t * avr_io_getirq(avr_t * avr, uint32_t ctl, int index)
63 avr_io_t * port = avr->io_port;
65 if (port->irq && port->irq_ioctl_get == ctl && port->irq_count > index)
66 return port->irq + index;
73 avr_irq_t * avr_iomem_getirq(avr_t * avr, avr_io_addr_t addr, int index)
75 avr_io_addr_t a = AVR_DATA_TO_IO(addr);
76 if (avr->io[a].irq == NULL) {
77 avr->io[a].irq = avr_alloc_irq(0, 9);
78 // mark the pin ones as filtered, so they only are raised when changing
79 for (int i = 0; i < 8; i++)
80 avr->io[a].irq[i].flags |= IRQ_FLAG_FILTERED;
82 return index < 9 ? avr->io[a].irq + index : NULL;
85 struct avr_irq_t * avr_io_setirqs(avr_io_t * io, uint32_t ctl, int count, struct avr_irq_t * irqs)
87 // allocate this module's IRQ
88 io->irq_count = count;
89 io->irq = irqs ? irqs : avr_alloc_irq(0, count);
90 io->irq_ioctl_get = ctl;
94 static void avr_deallocate_io(avr_io_t * io)
98 avr_free_irq(io->irq, io->irq_count);
100 io->irq_ioctl_get = 0;
105 void avr_deallocate_ios(avr_t * avr)
107 avr_io_t * port = avr->io_port;
109 avr_io_t * next = port->next;
110 avr_deallocate_io(port);