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Diffstat (limited to 'hw')
-rw-r--r--hw/block/fdc.c61
-rw-r--r--hw/dma/i8257.c20
2 files changed, 31 insertions, 50 deletions
diff --git a/hw/block/fdc.c b/hw/block/fdc.c
index 22e954e0dc..33bc9e2f92 100644
--- a/hw/block/fdc.c
+++ b/hw/block/fdc.c
@@ -1714,53 +1714,28 @@ static void fdctrl_start_transfer(FDCtrl *fdctrl, int direction)
}
fdctrl->eot = fdctrl->fifo[6];
if (fdctrl->dor & FD_DOR_DMAEN) {
- IsaDmaTransferMode dma_mode;
+ /* DMA transfer is enabled. */
IsaDmaClass *k = ISADMA_GET_CLASS(fdctrl->dma);
- bool dma_mode_ok;
- /* DMA transfer are enabled. Check if DMA channel is well programmed */
- dma_mode = k->get_transfer_mode(fdctrl->dma, fdctrl->dma_chann);
- FLOPPY_DPRINTF("dma_mode=%d direction=%d (%d - %d)\n",
- dma_mode, direction,
- (128 << fdctrl->fifo[5]) *
+
+ FLOPPY_DPRINTF("direction=%d (%d - %d)\n",
+ direction, (128 << fdctrl->fifo[5]) *
(cur_drv->last_sect - ks + 1), fdctrl->data_len);
- switch (direction) {
- case FD_DIR_SCANE:
- case FD_DIR_SCANL:
- case FD_DIR_SCANH:
- dma_mode_ok = (dma_mode == ISADMA_TRANSFER_VERIFY);
- break;
- case FD_DIR_WRITE:
- dma_mode_ok = (dma_mode == ISADMA_TRANSFER_WRITE);
- break;
- case FD_DIR_READ:
- dma_mode_ok = (dma_mode == ISADMA_TRANSFER_READ);
- break;
- case FD_DIR_VERIFY:
- dma_mode_ok = true;
- break;
- default:
- dma_mode_ok = false;
- break;
- }
- if (dma_mode_ok) {
- /* No access is allowed until DMA transfer has completed */
- fdctrl->msr &= ~FD_MSR_RQM;
- if (direction != FD_DIR_VERIFY) {
- /* Now, we just have to wait for the DMA controller to
- * recall us...
- */
- k->hold_DREQ(fdctrl->dma, fdctrl->dma_chann);
- k->schedule(fdctrl->dma);
- } else {
- /* Start transfer */
- fdctrl_transfer_handler(fdctrl, fdctrl->dma_chann, 0,
- fdctrl->data_len);
- }
- return;
+
+ /* No access is allowed until DMA transfer has completed */
+ fdctrl->msr &= ~FD_MSR_RQM;
+ if (direction != FD_DIR_VERIFY) {
+ /*
+ * Now, we just have to wait for the DMA controller to
+ * recall us...
+ */
+ k->hold_DREQ(fdctrl->dma, fdctrl->dma_chann);
+ k->schedule(fdctrl->dma);
} else {
- FLOPPY_DPRINTF("bad dma_mode=%d direction=%d\n", dma_mode,
- direction);
+ /* Start transfer */
+ fdctrl_transfer_handler(fdctrl, fdctrl->dma_chann, 0,
+ fdctrl->data_len);
}
+ return;
}
FLOPPY_DPRINTF("start non-DMA transfer\n");
fdctrl->msr |= FD_MSR_NONDMA | FD_MSR_RQM;
diff --git a/hw/dma/i8257.c b/hw/dma/i8257.c
index ef15c06d77..1b3435ab58 100644
--- a/hw/dma/i8257.c
+++ b/hw/dma/i8257.c
@@ -292,12 +292,6 @@ static uint64_t i8257_read_cont(void *opaque, hwaddr nport, unsigned size)
return val;
}
-static IsaDmaTransferMode i8257_dma_get_transfer_mode(IsaDma *obj, int nchan)
-{
- I8257State *d = I8257(obj);
- return (d->regs[nchan & 3].mode >> 2) & 3;
-}
-
static bool i8257_dma_has_autoinitialization(IsaDma *obj, int nchan)
{
I8257State *d = I8257(obj);
@@ -400,6 +394,11 @@ static void i8257_dma_register_channel(IsaDma *obj, int nchan,
r->opaque = opaque;
}
+static bool i8257_is_verify_transfer(I8257Regs *r)
+{
+ return (r->mode & 0x0c) == 0;
+}
+
static int i8257_dma_read_memory(IsaDma *obj, int nchan, void *buf, int pos,
int len)
{
@@ -407,6 +406,10 @@ static int i8257_dma_read_memory(IsaDma *obj, int nchan, void *buf, int pos,
I8257Regs *r = &d->regs[nchan & 3];
hwaddr addr = ((r->pageh & 0x7f) << 24) | (r->page << 16) | r->now[ADDR];
+ if (i8257_is_verify_transfer(r)) {
+ return len;
+ }
+
if (r->mode & 0x20) {
int i;
uint8_t *p = buf;
@@ -431,6 +434,10 @@ static int i8257_dma_write_memory(IsaDma *obj, int nchan, void *buf, int pos,
I8257Regs *r = &s->regs[nchan & 3];
hwaddr addr = ((r->pageh & 0x7f) << 24) | (r->page << 16) | r->now[ADDR];
+ if (i8257_is_verify_transfer(r)) {
+ return len;
+ }
+
if (r->mode & 0x20) {
int i;
uint8_t *p = buf;
@@ -597,7 +604,6 @@ static void i8257_class_init(ObjectClass *klass, void *data)
dc->vmsd = &vmstate_i8257;
device_class_set_props(dc, i8257_properties);
- idc->get_transfer_mode = i8257_dma_get_transfer_mode;
idc->has_autoinitialization = i8257_dma_has_autoinitialization;
idc->read_memory = i8257_dma_read_memory;
idc->write_memory = i8257_dma_write_memory;