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Parallel port reset 

Attached patch adds a reset handler to parallel port, so it gets correct
register values after a reset.

(Hervé Poussineau)

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5942 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
aurel32 2008-12-07 23:26:09 +00:00
parent 0c34a5d722
commit 33093a0afc
1 changed files with 11 additions and 5 deletions
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16
hw/parallel.c
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@ -418,8 +418,10 @@ static uint32_t parallel_ioport_ecp_read(void *opaque, uint32_t addr)
return ret;
}
static void parallel_reset(ParallelState *s, qemu_irq irq, CharDriverState *chr)
static void parallel_reset(void *opaque)
{
ParallelState *s = opaque;
s->datar = ~0;
s->dataw = ~0;
s->status = PARA_STS_BUSY;
@ -430,9 +432,7 @@ static void parallel_reset(ParallelState *s, qemu_irq irq, CharDriverState *chr)
s->control = PARA_CTR_SELECT;
s->control |= PARA_CTR_INIT;
s->control |= 0xc0;
s->irq = irq;
s->irq_pending = 0;
s->chr = chr;
s->hw_driver = 0;
s->epp_timeout = 0;
s->last_read_offset = ~0U;
@ -447,7 +447,10 @@ ParallelState *parallel_init(int base, qemu_irq irq, CharDriverState *chr)
s = qemu_mallocz(sizeof(ParallelState));
if (!s)
return NULL;
parallel_reset(s, irq, chr);
s->irq = irq;
s->chr = chr;
parallel_reset(s);
qemu_register_reset(parallel_reset, s);
if (qemu_chr_ioctl(chr, CHR_IOCTL_PP_READ_STATUS, &dummy) == 0) {
s->hw_driver = 1;
@ -538,8 +541,11 @@ ParallelState *parallel_mm_init(target_phys_addr_t base, int it_shift, qemu_irq
s = qemu_mallocz(sizeof(ParallelState));
if (!s)
return NULL;
parallel_reset(s, irq, chr);
s->irq = irq;
s->chr = chr;
s->it_shift = it_shift;
parallel_reset(s);
qemu_register_reset(parallel_reset, s);
io_sw = cpu_register_io_memory(0, parallel_mm_read_sw, parallel_mm_write_sw, s);
cpu_register_physical_memory(base, 8 << it_shift, io_sw);