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sd/sdhci:ADMA: fix interrupt 

The end of transfer check was occurring and potentially returning before
the interrupt flag was checked. This means the interrupt will be missed
if it occurs on the last packet. Fix by checking for the interrupt
before checking for the end of transfer.

Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Reviewed-by: Igor Mitsyanko <i.mitsyanko@gmail.com>
Message-id: 9969ec154777957ec738fc4e539d68e7494d0081.1369370934.git.peter.crosthwaite@xilinx.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Crosthwaite 2013-06-03 17:17:45 +01:00 committed by Peter Maydell
parent 677ff2ae66
commit 1d32c26f28
1 changed files with 9 additions and 9 deletions
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18
hw/sd/sdhci.c
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@ -730,6 +730,15 @@ static void sdhci_do_adma(SDHCIState *s)
break;
}
if (dscr.attr & SDHC_ADMA_ATTR_INT) {
DPRINT_L1("ADMA interrupt: admasysaddr=0x%lx\n", s->admasysaddr);
if (s->norintstsen & SDHC_NISEN_DMA) {
s->norintsts |= SDHC_NIS_DMA;
}
sdhci_update_irq(s);
}
/* ADMA transfer terminates if blkcnt == 0 or by END attribute */
if (((s->trnmod & SDHC_TRNS_BLK_CNT_EN) &&
(s->blkcnt == 0)) || (dscr.attr & SDHC_ADMA_ATTR_END)) {
@ -752,15 +761,6 @@ static void sdhci_do_adma(SDHCIState *s)
return;
}
if (dscr.attr & SDHC_ADMA_ATTR_INT) {
DPRINT_L1("ADMA interrupt: admasysaddr=0x%lx\n", s->admasysaddr);
if (s->norintstsen & SDHC_NISEN_DMA) {
s->norintsts |= SDHC_NIS_DMA;
}
sdhci_update_irq(s);
return;
}
}
/* we have unfinished business - reschedule to continue ADMA */