diff options
Diffstat (limited to 'hw/sparc32_dma.c')
-rw-r--r-- | hw/sparc32_dma.c | 72 |
1 files changed, 31 insertions, 41 deletions
diff --git a/hw/sparc32_dma.c b/hw/sparc32_dma.c index e1baee8..de14998 100644 --- a/hw/sparc32_dma.c +++ b/hw/sparc32_dma.c @@ -41,22 +41,25 @@ do { printf("DMA: " fmt , ##args); } while (0) #define DPRINTF(fmt, args...) #endif -#define DMA_REGS 8 -#define DMA_MAXADDR (DMA_REGS * 4 - 1) +#define DMA_REGS 4 +#define DMA_SIZE (4 * sizeof(uint32_t)) +#define DMA_MAXADDR (DMA_SIZE - 1) #define DMA_VER 0xa0000000 #define DMA_INTR 1 #define DMA_INTREN 0x10 #define DMA_WRITE_MEM 0x100 #define DMA_LOADED 0x04000000 +#define DMA_DRAIN_FIFO 0x40 #define DMA_RESET 0x80 typedef struct DMAState DMAState; struct DMAState { uint32_t dmaregs[DMA_REGS]; - qemu_irq espirq, leirq; - void *iommu, *esp_opaque, *lance_opaque; + qemu_irq irq; + void *iommu, *dev_opaque; + void (*dev_reset)(void *dev_opaque); qemu_irq *pic; }; @@ -69,7 +72,7 @@ void ledma_memory_read(void *opaque, target_phys_addr_t addr, DPRINTF("DMA write, direction: %c, addr 0x%8.8x\n", s->dmaregs[0] & DMA_WRITE_MEM ? 'w': 'r', s->dmaregs[1]); - addr |= s->dmaregs[7]; + addr |= s->dmaregs[3]; if (do_bswap) { sparc_iommu_memory_read(s->iommu, addr, buf, len); } else { @@ -91,7 +94,7 @@ void ledma_memory_write(void *opaque, target_phys_addr_t addr, DPRINTF("DMA read, direction: %c, addr 0x%8.8x\n", s->dmaregs[0] & DMA_WRITE_MEM ? 'w': 'r', s->dmaregs[1]); - addr |= s->dmaregs[7]; + addr |= s->dmaregs[3]; if (do_bswap) { sparc_iommu_memory_write(s->iommu, addr, buf, len); } else { @@ -118,7 +121,7 @@ void espdma_raise_irq(void *opaque) DPRINTF("Raise ESP IRQ\n"); s->dmaregs[0] |= DMA_INTR; - qemu_irq_raise(s->espirq); + qemu_irq_raise(s->irq); } void espdma_clear_irq(void *opaque) @@ -127,7 +130,7 @@ void espdma_clear_irq(void *opaque) s->dmaregs[0] &= ~DMA_INTR; DPRINTF("Lower ESP IRQ\n"); - qemu_irq_lower(s->espirq); + qemu_irq_lower(s->irq); } void espdma_memory_read(void *opaque, uint8_t *buf, int len) @@ -158,7 +161,8 @@ static uint32_t dma_mem_readl(void *opaque, target_phys_addr_t addr) uint32_t saddr; saddr = (addr & DMA_MAXADDR) >> 2; - DPRINTF("read dmareg[%d]: 0x%8.8x\n", saddr, s->dmaregs[saddr]); + DPRINTF("read dmareg " TARGET_FMT_plx ": 0x%8.8x\n", addr, + s->dmaregs[saddr]); return s->dmaregs[saddr]; } @@ -169,37 +173,26 @@ static void dma_mem_writel(void *opaque, target_phys_addr_t addr, uint32_t val) uint32_t saddr; saddr = (addr & DMA_MAXADDR) >> 2; - DPRINTF("write dmareg[%d]: 0x%8.8x -> 0x%8.8x\n", saddr, s->dmaregs[saddr], val); + DPRINTF("write dmareg " TARGET_FMT_plx ": 0x%8.8x -> 0x%8.8x\n", addr, + s->dmaregs[saddr], val); switch (saddr) { case 0: if (!(val & DMA_INTREN)) { - DPRINTF("Lower ESP IRQ\n"); - qemu_irq_lower(s->espirq); + DPRINTF("Lower IRQ\n"); + qemu_irq_lower(s->irq); } if (val & DMA_RESET) { - esp_reset(s->esp_opaque); - } else if (val & 0x40) { - val &= ~0x40; + s->dev_reset(s->dev_opaque); + } else if (val & DMA_DRAIN_FIFO) { + val &= ~DMA_DRAIN_FIFO; } else if (val == 0) - val = 0x40; + val = DMA_DRAIN_FIFO; val &= 0x0fffffff; val |= DMA_VER; break; case 1: s->dmaregs[0] |= DMA_LOADED; break; - case 4: - /* ??? Should this mask out the lance IRQ? The NIC may re-assert - this IRQ unexpectedly. */ - if (!(val & DMA_INTREN)) { - DPRINTF("Lower Lance IRQ\n"); - qemu_irq_lower(s->leirq); - } - if (val & DMA_RESET) - pcnet_h_reset(s->lance_opaque); - val &= 0x0fffffff; - val |= DMA_VER; - break; default: break; } @@ -222,9 +215,8 @@ static void dma_reset(void *opaque) { DMAState *s = opaque; - memset(s->dmaregs, 0, DMA_REGS * 4); + memset(s->dmaregs, 0, DMA_SIZE); s->dmaregs[0] = DMA_VER; - s->dmaregs[4] = DMA_VER; } static void dma_save(QEMUFile *f, void *opaque) @@ -241,7 +233,7 @@ static int dma_load(QEMUFile *f, void *opaque, int version_id) DMAState *s = opaque; unsigned int i; - if (version_id != 1) + if (version_id != 2) return -EINVAL; for (i = 0; i < DMA_REGS; i++) qemu_get_be32s(f, &s->dmaregs[i]); @@ -249,8 +241,7 @@ static int dma_load(QEMUFile *f, void *opaque, int version_id) return 0; } -void *sparc32_dma_init(target_phys_addr_t daddr, qemu_irq espirq, - qemu_irq leirq, void *iommu) +void *sparc32_dma_init(target_phys_addr_t daddr, qemu_irq irq, void *iommu) { DMAState *s; int dma_io_memory; @@ -259,24 +250,23 @@ void *sparc32_dma_init(target_phys_addr_t daddr, qemu_irq espirq, if (!s) return NULL; - s->espirq = espirq; - s->leirq = leirq; + s->irq = irq; s->iommu = iommu; dma_io_memory = cpu_register_io_memory(0, dma_mem_read, dma_mem_write, s); - cpu_register_physical_memory(daddr, 16 * 2, dma_io_memory); + cpu_register_physical_memory(daddr, DMA_SIZE, dma_io_memory); - register_savevm("sparc32_dma", daddr, 1, dma_save, dma_load, s); + register_savevm("sparc32_dma", daddr, 2, dma_save, dma_load, s); qemu_register_reset(dma_reset, s); return s; } -void sparc32_dma_set_reset_data(void *opaque, void *esp_opaque, - void *lance_opaque) +void sparc32_dma_set_reset_data(void *opaque, void (*dev_reset)(void *opaque), + void *dev_opaque) { DMAState *s = opaque; - s->esp_opaque = esp_opaque; - s->lance_opaque = lance_opaque; + s->dev_reset = dev_reset; + s->dev_opaque = dev_opaque; } |