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 if (avr->io[a].r.param || avr->io[a].r.c) {
51 fputs("Error: avr_register_io_read(): Already registered, refusing to override.\n", stderr);
54 avr->io[a].r.param = param;
55 avr->io[a].r.c = readp;
58 void avr_register_io_write(avr_t *avr, avr_io_addr_t addr, avr_io_write_t writep, void * param)
60 avr_io_addr_t a = AVR_DATA_TO_IO(addr);
61 if (avr->io[a].w.param || avr->io[a].w.c) {
62 fputs("Error: avr_register_io_write(): Already registered, refusing to override.\n", stderr);
65 avr->io[a].w.param = param;
66 avr->io[a].w.c = writep;
69 struct avr_irq_t * avr_io_getirq(avr_t * avr, uint32_t ctl, int index)
71 avr_io_t * port = avr->io_port;
73 if (port->irq && port->irq_ioctl_get == ctl && port->irq_count > index)
74 return port->irq + index;
81 avr_irq_t * avr_iomem_getirq(avr_t * avr, avr_io_addr_t addr, int index)
83 avr_io_addr_t a = AVR_DATA_TO_IO(addr);
84 if (avr->io[a].irq == NULL) {
85 avr->io[a].irq = avr_alloc_irq(0, 9);
86 // mark the pin ones as filtered, so they only are raised when changing
87 for (int i = 0; i < 8; i++)
88 avr->io[a].irq[i].flags |= IRQ_FLAG_FILTERED;
90 return index < 9 ? avr->io[a].irq + index : NULL;
93 struct avr_irq_t * avr_io_setirqs(avr_io_t * io, uint32_t ctl, int count, struct avr_irq_t * irqs)
95 // allocate this module's IRQ
96 io->irq_count = count;
97 io->irq = irqs ? irqs : avr_alloc_irq(0, count);
98 io->irq_ioctl_get = ctl;
102 static void avr_deallocate_io(avr_io_t * io)
106 avr_free_irq(io->irq, io->irq_count);
108 io->irq_ioctl_get = 0;
113 void avr_deallocate_ios(avr_t * avr)
115 avr_io_t * port = avr->io_port;
117 avr_io_t * next = port->next;
118 avr_deallocate_io(port);