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Diffstat (limited to 'hw/dma.c')
-rw-r--r--hw/dma.c106
1 files changed, 70 insertions, 36 deletions
diff --git a/hw/dma.c b/hw/dma.c
index d6aeac2834..c2d7b21562 100644
--- a/hw/dma.c
+++ b/hw/dma.c
@@ -58,6 +58,8 @@ static struct dma_cont {
int dshift;
struct dma_regs regs[4];
qemu_irq *cpu_request_exit;
+ MemoryRegion channel_io;
+ MemoryRegion cont_io;
} dma_controllers[2];
enum {
@@ -149,7 +151,7 @@ static inline int getff (struct dma_cont *d)
return ff;
}
-static uint32_t read_chan (void *opaque, uint32_t nport)
+static uint64_t read_chan(void *opaque, hwaddr nport, unsigned size)
{
struct dma_cont *d = opaque;
int ichan, nreg, iport, ff, val, dir;
@@ -171,7 +173,8 @@ static uint32_t read_chan (void *opaque, uint32_t nport)
return (val >> (d->dshift + (ff << 3))) & 0xff;
}
-static void write_chan (void *opaque, uint32_t nport, uint32_t data)
+static void write_chan(void *opaque, hwaddr nport, uint64_t data,
+ unsigned size)
{
struct dma_cont *d = opaque;
int iport, ichan, nreg;
@@ -189,22 +192,23 @@ static void write_chan (void *opaque, uint32_t nport, uint32_t data)
}
}
-static void write_cont (void *opaque, uint32_t nport, uint32_t data)
+static void write_cont(void *opaque, hwaddr nport, uint64_t data,
+ unsigned size)
{
struct dma_cont *d = opaque;
int iport, ichan = 0;
iport = (nport >> d->dshift) & 0x0f;
switch (iport) {
- case 0x08: /* command */
+ case 0x01: /* command */
if ((data != 0) && (data & CMD_NOT_SUPPORTED)) {
- dolog ("command %#x not supported\n", data);
+ dolog("command %"PRIx64" not supported\n", data);
return;
}
d->command = data;
break;
- case 0x09:
+ case 0x02:
ichan = data & 3;
if (data & 4) {
d->status |= 1 << (ichan + 4);
@@ -216,7 +220,7 @@ static void write_cont (void *opaque, uint32_t nport, uint32_t data)
DMA_run();
break;
- case 0x0a: /* single mask */
+ case 0x03: /* single mask */
if (data & 4)
d->mask |= 1 << (data & 3);
else
@@ -224,7 +228,7 @@ static void write_cont (void *opaque, uint32_t nport, uint32_t data)
DMA_run();
break;
- case 0x0b: /* mode */
+ case 0x04: /* mode */
{
ichan = data & 3;
#ifdef DEBUG_DMA
@@ -243,23 +247,23 @@ static void write_cont (void *opaque, uint32_t nport, uint32_t data)
break;
}
- case 0x0c: /* clear flip flop */
+ case 0x05: /* clear flip flop */
d->flip_flop = 0;
break;
- case 0x0d: /* reset */
+ case 0x06: /* reset */
d->flip_flop = 0;
d->mask = ~0;
d->status = 0;
d->command = 0;
break;
- case 0x0e: /* clear mask for all channels */
+ case 0x07: /* clear mask for all channels */
d->mask = 0;
DMA_run();
break;
- case 0x0f: /* write mask for all channels */
+ case 0x08: /* write mask for all channels */
d->mask = data;
DMA_run();
break;
@@ -277,7 +281,7 @@ static void write_cont (void *opaque, uint32_t nport, uint32_t data)
#endif
}
-static uint32_t read_cont (void *opaque, uint32_t nport)
+static uint64_t read_cont(void *opaque, hwaddr nport, unsigned size)
{
struct dma_cont *d = opaque;
int iport, val;
@@ -463,7 +467,7 @@ void DMA_schedule(int nchan)
static void dma_reset(void *opaque)
{
struct dma_cont *d = opaque;
- write_cont (d, (0x0d << d->dshift), 0);
+ write_cont(d, (0x06 << d->dshift), 0, 1);
}
static int dma_phony_handler (void *opaque, int nchan, int dma_pos, int dma_len)
@@ -473,38 +477,68 @@ static int dma_phony_handler (void *opaque, int nchan, int dma_pos, int dma_len)
return dma_pos;
}
+
+static const MemoryRegionOps channel_io_ops = {
+ .read = read_chan,
+ .write = write_chan,
+ .endianness = DEVICE_NATIVE_ENDIAN,
+ .impl = {
+ .min_access_size = 1,
+ .max_access_size = 1,
+ },
+};
+
+/* IOport from page_base */
+static const MemoryRegionPortio page_portio_list[] = {
+ { 0x01, 3, 1, .write = write_page, .read = read_page, },
+ { 0x07, 1, 1, .write = write_page, .read = read_page, },
+ PORTIO_END_OF_LIST(),
+};
+
+/* IOport from pageh_base */
+static const MemoryRegionPortio pageh_portio_list[] = {
+ { 0x01, 3, 1, .write = write_pageh, .read = read_pageh, },
+ { 0x07, 3, 1, .write = write_pageh, .read = read_pageh, },
+ PORTIO_END_OF_LIST(),
+};
+
+static const MemoryRegionOps cont_io_ops = {
+ .read = read_cont,
+ .write = write_cont,
+ .endianness = DEVICE_NATIVE_ENDIAN,
+ .impl = {
+ .min_access_size = 1,
+ .max_access_size = 1,
+ },
+};
+
/* dshift = 0: 8 bit DMA, 1 = 16 bit DMA */
static void dma_init2(struct dma_cont *d, int base, int dshift,
int page_base, int pageh_base,
qemu_irq *cpu_request_exit)
{
- static const int page_port_list[] = { 0x1, 0x2, 0x3, 0x7 };
int i;
d->dshift = dshift;
d->cpu_request_exit = cpu_request_exit;
- for (i = 0; i < 8; i++) {
- register_ioport_write (base + (i << dshift), 1, 1, write_chan, d);
- register_ioport_read (base + (i << dshift), 1, 1, read_chan, d);
- }
- for (i = 0; i < ARRAY_SIZE (page_port_list); i++) {
- register_ioport_write (page_base + page_port_list[i], 1, 1,
- write_page, d);
- register_ioport_read (page_base + page_port_list[i], 1, 1,
- read_page, d);
- if (pageh_base >= 0) {
- register_ioport_write (pageh_base + page_port_list[i], 1, 1,
- write_pageh, d);
- register_ioport_read (pageh_base + page_port_list[i], 1, 1,
- read_pageh, d);
- }
- }
- for (i = 0; i < 8; i++) {
- register_ioport_write (base + ((i + 8) << dshift), 1, 1,
- write_cont, d);
- register_ioport_read (base + ((i + 8) << dshift), 1, 1,
- read_cont, d);
+
+ memory_region_init_io(&d->channel_io, &channel_io_ops, d,
+ "dma-chan", 8 << d->dshift);
+ memory_region_add_subregion(isa_address_space_io(NULL),
+ base, &d->channel_io);
+
+ isa_register_portio_list(NULL, page_base, page_portio_list, d,
+ "dma-page");
+ if (pageh_base >= 0) {
+ isa_register_portio_list(NULL, pageh_base, pageh_portio_list, d,
+ "dma-pageh");
}
+
+ memory_region_init_io(&d->cont_io, &cont_io_ops, d, "dma-cont",
+ 8 << d->dshift);
+ memory_region_add_subregion(isa_address_space_io(NULL),
+ base + (8 << d->dshift), &d->cont_io);
+
qemu_register_reset(dma_reset, d);
dma_reset(d);
for (i = 0; i < ARRAY_SIZE (d->regs); ++i) {
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-11 17:57:13 +0000