haraldwolff/qemu-patch-raspberry4
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fdc: fix FD_SR0_SEEK for initial seek on DMA transfers

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fdctrl_start_transfer() used to set FD_SR0_SEEK no matter if
there actually was a seek or not. This is obviously wrong.

fdctrl_start_transfer() has this information because it performs
the initial seek itself.

Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Hervé Poussineau 2012-09-20 23:01:58 +02:00 committed by Kevin Wolf
parent c5139bd9a9
commit d6ed4e2106
1 changed files with 1 additions and 7 deletions
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8
hw/fdc.c
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@ -1179,7 +1179,6 @@ static void fdctrl_start_transfer(FDCtrl *fdctrl, int direction)
{
FDrive *cur_drv;
uint8_t kh, kt, ks;
int did_seek = 0;
SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
cur_drv = get_cur_drv(fdctrl);
@ -1213,7 +1212,7 @@ static void fdctrl_start_transfer(FDCtrl *fdctrl, int direction)
fdctrl->fifo[5] = ks;
return;
case 1:
did_seek = 1;
fdctrl->status0 |= FD_SR0_SEEK;
break;
default:
break;
@ -1240,10 +1239,6 @@ static void fdctrl_start_transfer(FDCtrl *fdctrl, int direction)
fdctrl->data_state |= FD_STATE_MULTI;
else
fdctrl->data_state &= ~FD_STATE_MULTI;
if (did_seek)
fdctrl->data_state |= FD_STATE_SEEK;
else
fdctrl->data_state &= ~FD_STATE_SEEK;
if (fdctrl->fifo[5] == 00) {
fdctrl->data_len = fdctrl->fifo[8];
} else {
@ -1286,7 +1281,6 @@ static void fdctrl_start_transfer(FDCtrl *fdctrl, int direction)
if (direction != FD_DIR_WRITE)
fdctrl->msr |= FD_MSR_DIO;
/* IO based transfer: calculate len */
fdctrl->status0 |= FD_SR0_SEEK;
fdctrl_raise_irq(fdctrl);
}