#include "hw.h"
#include "pxa.h"
+#include "sysbus.h"
+
+#define PXA255_DMA_NUM_CHANNELS 16
+#define PXA27X_DMA_NUM_CHANNELS 32
+
+#define PXA2XX_DMA_NUM_REQUESTS 75
typedef struct {
target_phys_addr_t descr;
int request;
} PXA2xxDMAChannel;
-/* Allow the DMA to be used as a PIC. */
-typedef void (*pxa2xx_dma_handler_t)(void *opaque, int irq, int level);
-
-struct PXA2xxDMAState {
- pxa2xx_dma_handler_t handler;
+typedef struct PXA2xxDMAState {
+ SysBusDevice busdev;
qemu_irq irq;
uint32_t stopintr;
int channels;
PXA2xxDMAChannel *chan;
- uint8_t *req;
+ uint8_t req[PXA2XX_DMA_NUM_REQUESTS];
/* Flag to avoid recursive DMA invocations. */
int running;
-};
-
-#define PXA255_DMA_NUM_CHANNELS 16
-#define PXA27X_DMA_NUM_CHANNELS 32
-
-#define PXA2XX_DMA_NUM_REQUESTS 75
+} PXA2xxDMAState;
#define DCSR0 0x0000 /* DMA Control / Status register for Channel 0 */
#define DCSR31 0x007c /* DMA Control / Status register for Channel 31 */
pxa2xx_dma_write
};
-static void pxa2xx_dma_save(QEMUFile *f, void *opaque)
+static void pxa2xx_dma_request(void *opaque, int req_num, int on)
{
- PXA2xxDMAState *s = (PXA2xxDMAState *) opaque;
- int i;
-
- qemu_put_be32(f, s->channels);
-
- qemu_put_be32s(f, &s->stopintr);
- qemu_put_be32s(f, &s->eorintr);
- qemu_put_be32s(f, &s->rasintr);
- qemu_put_be32s(f, &s->startintr);
- qemu_put_be32s(f, &s->endintr);
- qemu_put_be32s(f, &s->align);
- qemu_put_be32s(f, &s->pio);
-
- qemu_put_buffer(f, s->req, PXA2XX_DMA_NUM_REQUESTS);
- for (i = 0; i < s->channels; i ++) {
- qemu_put_betl(f, s->chan[i].descr);
- qemu_put_betl(f, s->chan[i].src);
- qemu_put_betl(f, s->chan[i].dest);
- qemu_put_be32s(f, &s->chan[i].cmd);
- qemu_put_be32s(f, &s->chan[i].state);
- qemu_put_be32(f, s->chan[i].request);
- };
-}
+ PXA2xxDMAState *s = opaque;
+ int ch;
+ if (req_num < 0 || req_num >= PXA2XX_DMA_NUM_REQUESTS)
+ hw_error("%s: Bad DMA request %i\n", __FUNCTION__, req_num);
-static int pxa2xx_dma_load(QEMUFile *f, void *opaque, int version_id)
-{
- PXA2xxDMAState *s = (PXA2xxDMAState *) opaque;
- int i;
-
- if (qemu_get_be32(f) != s->channels)
- return -EINVAL;
-
- qemu_get_be32s(f, &s->stopintr);
- qemu_get_be32s(f, &s->eorintr);
- qemu_get_be32s(f, &s->rasintr);
- qemu_get_be32s(f, &s->startintr);
- qemu_get_be32s(f, &s->endintr);
- qemu_get_be32s(f, &s->align);
- qemu_get_be32s(f, &s->pio);
-
- qemu_get_buffer(f, s->req, PXA2XX_DMA_NUM_REQUESTS);
- for (i = 0; i < s->channels; i ++) {
- s->chan[i].descr = qemu_get_betl(f);
- s->chan[i].src = qemu_get_betl(f);
- s->chan[i].dest = qemu_get_betl(f);
- qemu_get_be32s(f, &s->chan[i].cmd);
- qemu_get_be32s(f, &s->chan[i].state);
- s->chan[i].request = qemu_get_be32(f);
- };
+ if (!(s->req[req_num] & DRCMR_MAPVLD))
+ return;
+ ch = s->req[req_num] & DRCMR_CHLNUM;
- return 0;
+ if (!s->chan[ch].request && on)
+ s->chan[ch].state |= DCSR_RASINTR;
+ else
+ s->chan[ch].state &= ~DCSR_RASINTR;
+ if (s->chan[ch].request && !on)
+ s->chan[ch].state |= DCSR_EORINT;
+
+ s->chan[ch].request = on;
+ if (on) {
+ pxa2xx_dma_run(s);
+ pxa2xx_dma_update(s, ch);
+ }
}
-static PXA2xxDMAState *pxa2xx_dma_init(target_phys_addr_t base,
- qemu_irq irq, int channels)
+static int pxa2xx_dma_init(SysBusDevice *dev)
{
int i, iomemtype;
PXA2xxDMAState *s;
- s = (PXA2xxDMAState *)
- qemu_mallocz(sizeof(PXA2xxDMAState));
+ s = FROM_SYSBUS(PXA2xxDMAState, dev);
+
+ if (s->channels <= 0) {
+ return -1;
+ }
- s->channels = channels;
s->chan = qemu_mallocz(sizeof(PXA2xxDMAChannel) * s->channels);
- s->irq = irq;
- s->handler = (pxa2xx_dma_handler_t) pxa2xx_dma_request;
- s->req = qemu_mallocz(sizeof(uint8_t) * PXA2XX_DMA_NUM_REQUESTS);
memset(s->chan, 0, sizeof(PXA2xxDMAChannel) * s->channels);
for (i = 0; i < s->channels; i ++)
memset(s->req, 0, sizeof(uint8_t) * PXA2XX_DMA_NUM_REQUESTS);
+ qdev_init_gpio_in(&dev->qdev, pxa2xx_dma_request, PXA2XX_DMA_NUM_REQUESTS);
+
iomemtype = cpu_register_io_memory(pxa2xx_dma_readfn,
pxa2xx_dma_writefn, s, DEVICE_NATIVE_ENDIAN);
- cpu_register_physical_memory(base, 0x00010000, iomemtype);
+ sysbus_init_mmio(dev, 0x00010000, iomemtype);
+ sysbus_init_irq(dev, &s->irq);
- register_savevm(NULL, "pxa2xx_dma", 0, 0, pxa2xx_dma_save, pxa2xx_dma_load, s);
-
- return s;
+ return 0;
}
-PXA2xxDMAState *pxa27x_dma_init(target_phys_addr_t base,
- qemu_irq irq)
+DeviceState *pxa27x_dma_init(target_phys_addr_t base, qemu_irq irq)
{
- return pxa2xx_dma_init(base, irq, PXA27X_DMA_NUM_CHANNELS);
+ DeviceState *dev;
+
+ dev = qdev_create(NULL, "pxa2xx-dma");
+ qdev_prop_set_int32(dev, "channels", PXA27X_DMA_NUM_CHANNELS);
+ qdev_init_nofail(dev);
+
+ sysbus_mmio_map(sysbus_from_qdev(dev), 0, base);
+ sysbus_connect_irq(sysbus_from_qdev(dev), 0, irq);
+
+ return dev;
}
-PXA2xxDMAState *pxa255_dma_init(target_phys_addr_t base,
- qemu_irq irq)
+DeviceState *pxa255_dma_init(target_phys_addr_t base, qemu_irq irq)
{
- return pxa2xx_dma_init(base, irq, PXA255_DMA_NUM_CHANNELS);
+ DeviceState *dev;
+
+ dev = qdev_create(NULL, "pxa2xx-dma");
+ qdev_prop_set_int32(dev, "channels", PXA27X_DMA_NUM_CHANNELS);
+ qdev_init_nofail(dev);
+
+ sysbus_mmio_map(sysbus_from_qdev(dev), 0, base);
+ sysbus_connect_irq(sysbus_from_qdev(dev), 0, irq);
+
+ return dev;
}
-void pxa2xx_dma_request(PXA2xxDMAState *s, int req_num, int on)
+static bool is_version_0(void *opaque, int version_id)
{
- int ch;
- if (req_num < 0 || req_num >= PXA2XX_DMA_NUM_REQUESTS)
- hw_error("%s: Bad DMA request %i\n", __FUNCTION__, req_num);
+ return version_id == 0;
+}
- if (!(s->req[req_num] & DRCMR_MAPVLD))
- return;
- ch = s->req[req_num] & DRCMR_CHLNUM;
+static VMStateDescription vmstate_pxa2xx_dma_chan = {
+ .name = "pxa2xx_dma_chan",
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .minimum_version_id_old = 1,
+ .fields = (VMStateField[]) {
+ VMSTATE_UINTTL(descr, PXA2xxDMAChannel),
+ VMSTATE_UINTTL(src, PXA2xxDMAChannel),
+ VMSTATE_UINTTL(dest, PXA2xxDMAChannel),
+ VMSTATE_UINT32(cmd, PXA2xxDMAChannel),
+ VMSTATE_UINT32(state, PXA2xxDMAChannel),
+ VMSTATE_INT32(request, PXA2xxDMAChannel),
+ VMSTATE_END_OF_LIST(),
+ },
+};
- if (!s->chan[ch].request && on)
- s->chan[ch].state |= DCSR_RASINTR;
- else
- s->chan[ch].state &= ~DCSR_RASINTR;
- if (s->chan[ch].request && !on)
- s->chan[ch].state |= DCSR_EORINT;
+static VMStateDescription vmstate_pxa2xx_dma = {
+ .name = "pxa2xx_dma",
+ .version_id = 1,
+ .minimum_version_id = 0,
+ .minimum_version_id_old = 0,
+ .fields = (VMStateField[]) {
+ VMSTATE_UNUSED_TEST(is_version_0, 4),
+ VMSTATE_UINT32(stopintr, PXA2xxDMAState),
+ VMSTATE_UINT32(eorintr, PXA2xxDMAState),
+ VMSTATE_UINT32(rasintr, PXA2xxDMAState),
+ VMSTATE_UINT32(startintr, PXA2xxDMAState),
+ VMSTATE_UINT32(endintr, PXA2xxDMAState),
+ VMSTATE_UINT32(align, PXA2xxDMAState),
+ VMSTATE_UINT32(pio, PXA2xxDMAState),
+ VMSTATE_BUFFER(req, PXA2xxDMAState),
+ VMSTATE_STRUCT_VARRAY_POINTER_INT32(chan, PXA2xxDMAState, channels,
+ vmstate_pxa2xx_dma_chan, PXA2xxDMAChannel),
+ VMSTATE_END_OF_LIST(),
+ },
+};
- s->chan[ch].request = on;
- if (on) {
- pxa2xx_dma_run(s);
- pxa2xx_dma_update(s, ch);
- }
+static SysBusDeviceInfo pxa2xx_dma_info = {
+ .init = pxa2xx_dma_init,
+ .qdev.name = "pxa2xx-dma",
+ .qdev.desc = "PXA2xx DMA controller",
+ .qdev.size = sizeof(PXA2xxDMAState),
+ .qdev.vmsd = &vmstate_pxa2xx_dma,
+ .qdev.props = (Property[]) {
+ DEFINE_PROP_INT32("channels", PXA2xxDMAState, channels, -1),
+ DEFINE_PROP_END_OF_LIST(),
+ },
+};
+
+static void pxa2xx_dma_register(void)
+{
+ sysbus_register_withprop(&pxa2xx_dma_info);
}
+device_init(pxa2xx_dma_register);
projects / qemu.git / blobdiff