diff options
Diffstat (limited to 'hw/dma.c')
| -rw-r--r-- | hw/dma.c | 17 |
1 files changed, 10 insertions, 7 deletions
@@ -57,6 +57,7 @@ static struct dma_cont { uint8_t flip_flop; int dshift; struct dma_regs regs[4]; + qemu_irq *cpu_request_exit; } dma_controllers[2]; enum { @@ -444,9 +445,9 @@ int DMA_write_memory (int nchan, void *buf, int pos, int len) /* request the emulator to transfer a new DMA memory block ASAP */ void DMA_schedule(int nchan) { - CPUState *env = cpu_single_env; - if (env) - cpu_exit(env); + struct dma_cont *d = &dma_controllers[nchan > 3]; + + qemu_irq_pulse(*d->cpu_request_exit); } static void dma_reset(void *opaque) @@ -464,12 +465,14 @@ static int dma_phony_handler (void *opaque, int nchan, int dma_pos, int dma_len) /* 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) + 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); @@ -539,12 +542,12 @@ static const VMStateDescription vmstate_dma = { } }; -void DMA_init (int high_page_enable) +void DMA_init(int high_page_enable, qemu_irq *cpu_request_exit) { dma_init2(&dma_controllers[0], 0x00, 0, 0x80, - high_page_enable ? 0x480 : -1); + high_page_enable ? 0x480 : -1, cpu_request_exit); dma_init2(&dma_controllers[1], 0xc0, 1, 0x88, - high_page_enable ? 0x488 : -1); + high_page_enable ? 0x488 : -1, cpu_request_exit); vmstate_register (0, &vmstate_dma, &dma_controllers[0]); vmstate_register (1, &vmstate_dma, &dma_controllers[1]); |