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OMAP DMA input signals must be level-triggered.

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3096 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
balrog 2007-07-31 01:43:17 +00:00
parent cfa0b71dd8
commit 1af2b62d12
1 changed files with 17 additions and 7 deletions
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22
hw/omap.c
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@ -403,6 +403,7 @@ struct omap_dma_s {
target_phys_addr_t base;
omap_clk clk;
int64_t delay;
uint32_t drq;
uint16_t gcr;
int run_count;
@ -511,7 +512,7 @@ next_channel:
if (request > 0)
s->ch[channel].status |= 0x40; /* External request */
if (s->delay)
if (s->delay && !qemu_timer_pending(s->tm))
qemu_mod_timer(s->tm, qemu_get_clock(vm_clock) + s->delay);
if (request > 0) {
@ -593,7 +594,8 @@ static void omap_dma_channel_run(struct omap_dma_s *s)
if (s->ch[ch].interrupts & 0x08)
s->ch[ch].status |= 0x08;
if (s->ch[ch].sync && s->ch[ch].fs) {
if (s->ch[ch].sync && s->ch[ch].fs &&
!(s->drq & (1 << s->ch[ch].sync))) {
s->ch[ch].status &= ~0x40;
omap_dma_request_stop(s, ch);
}
@ -607,7 +609,8 @@ static void omap_dma_channel_run(struct omap_dma_s *s)
if (s->ch[ch].interrupts & 0x04)
s->ch[ch].status |= 0x04;
if (s->ch[ch].sync && !s->ch[ch].fs) {
if (s->ch[ch].sync && !s->ch[ch].fs &&
!(s->drq & (1 << s->ch[ch].sync))) {
s->ch[ch].status &= ~0x40;
omap_dma_request_stop(s, ch);
}
@ -750,7 +753,7 @@ static int omap_dma_ch_reg_write(struct omap_dma_s *s,
s->ch[ch].running = 1;
omap_dma_channel_load(s, ch);
}
if (!s->ch[ch].sync)
if (!s->ch[ch].sync || (s->drq & (1 << s->ch[ch].sync)))
omap_dma_request_run(s, ch, 0);
} else {
s->ch[ch].running = 0;
@ -949,10 +952,15 @@ static CPUWriteMemoryFunc *omap_dma_writefn[] = {
static void omap_dma_request(void *opaque, int drq, int req)
{
struct omap_dma_s *s = (struct omap_dma_s *) opaque;
/* All the request pins are edge triggered. */
if (req)
/* The request pins are level triggered. */
if (req) {
if (~s->drq & (1 << drq)) {
s->drq |= 1 << drq;
omap_dma_request_run(s, 0, drq);
}
} else
s->drq &= ~(1 << drq);
}
static void omap_dma_clk_update(void *opaque, int line, int on)
{
@ -974,6 +982,7 @@ static void omap_dma_reset(struct omap_dma_s *s)
qemu_del_timer(s->tm);
s->gcr = 0x0004;
s->drq = 0x00000000;
s->run_count = 0;
s->lcd_ch.src = emiff;
s->lcd_ch.condition = 0;
@ -1002,6 +1011,7 @@ struct omap_dma_s *omap_dma_init(target_phys_addr_t base,
omap_clk_adduser(s->clk, qemu_allocate_irqs(omap_dma_clk_update, s, 1)[0]);
mpu->drq = qemu_allocate_irqs(omap_dma_request, s, 32);
omap_dma_reset(s);
omap_dma_clk_update(s, 0, 1);
iomemtype = cpu_register_io_memory(0, omap_dma_readfn,
omap_dma_writefn, s);