[Qemu-devel] [PATCHv3 04/13] sun4m: move DMA device wiring from sparc32_dma_init() to sun4m_hw_init()

[Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>]

By using the sysbus interface it is possible to wire up the esp/le devices
to the sun4m DMA controller directly during sun4m_hw_init() instead of
passing qemu_irqs into the sparc32_dma_init() function.

This is an intermediate step to allow further reorganisation as more logic
is moved into the relevant SPARC32 DMA devices; there will be a final
refactoring of sparc32_dma_init() once this work is complete.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
---
 hw/sparc/sun4m.c |   29 ++++++++++++++++-------------
 1 file changed, 16 insertions(+), 13 deletions(-)

diff --git a/hw/sparc/sun4m.c b/hw/sparc/sun4m.c
index 88a9752..4f2ed4b 100644
--- a/hw/sparc/sun4m.c
+++ b/hw/sparc/sun4m.c
@@ -307,8 +307,7 @@ static void *iommu_init(hwaddr addr, uint32_t version, qemu_irq irq)
     return s;
 }
 
-static void *sparc32_dma_init(hwaddr daddr, qemu_irq parent_irq,
-                              void *iommu, qemu_irq *dev_irq, int is_ledma)
+static void *sparc32_dma_init(hwaddr daddr, void *iommu, int is_ledma)
 {
     DeviceState *dev;
     SysBusDevice *s;
@@ -317,8 +316,6 @@ static void *sparc32_dma_init(hwaddr daddr, qemu_irq parent_irq,
     qdev_prop_set_ptr(dev, "iommu_opaque", iommu);
     qdev_init_nofail(dev);
     s = SYS_BUS_DEVICE(dev);
-    sysbus_connect_irq(s, 0, parent_irq);
-    *dev_irq = qdev_get_gpio_in(dev, 0);
     sysbus_mmio_map(s, 0, daddr);
 
     return s;
@@ -821,9 +818,10 @@ static void sun4m_hw_init(const struct sun4m_hwdef *hwdef,
     DeviceState *slavio_intctl;
     const char *cpu_model = machine->cpu_model;
     unsigned int i;
-    void *iommu, *espdma, *ledma, *nvram;
-    qemu_irq *cpu_irqs[MAX_CPUS], slavio_irq[32], slavio_cpu_irq[MAX_CPUS],
-        espdma_irq, ledma_irq;
+    void *iommu, *nvram;
+    DeviceState *espdma, *ledma;
+    SysBusDevice *sbd;
+    qemu_irq *cpu_irqs[MAX_CPUS], slavio_irq[32], slavio_cpu_irq[MAX_CPUS];
     qemu_irq esp_reset, dma_enable;
     qemu_irq fdc_tc;
     unsigned long kernel_size;
@@ -882,11 +880,13 @@ static void sun4m_hw_init(const struct sun4m_hwdef *hwdef,
         empty_slot_init(hwdef->iommu_pad_base,hwdef->iommu_pad_len);
     }
 
-    espdma = sparc32_dma_init(hwdef->dma_base, slavio_irq[18],
-                              iommu, &espdma_irq, 0);
+    espdma = sparc32_dma_init(hwdef->dma_base, iommu, 0);
+    sbd = SYS_BUS_DEVICE(espdma);
+    sysbus_connect_irq(sbd, 0, slavio_irq[18]);
 
-    ledma = sparc32_dma_init(hwdef->dma_base + 16ULL,
-                             slavio_irq[16], iommu, &ledma_irq, 1);
+    ledma = sparc32_dma_init(hwdef->dma_base + 16ULL, iommu, 1);
+    sbd = SYS_BUS_DEVICE(ledma);
+    sysbus_connect_irq(sbd, 0, slavio_irq[16]);
 
     if (graphic_depth != 8 && graphic_depth != 24) {
         error_report("Unsupported depth: %d", graphic_depth);
@@ -939,7 +939,8 @@ static void sun4m_hw_init(const struct sun4m_hwdef *hwdef,
         empty_slot_init(hwdef->sx_base, 0x2000);
     }
 
-    lance_init(&nd_table[0], hwdef->le_base, ledma, ledma_irq);
+    lance_init(&nd_table[0], hwdef->le_base, ledma,
+               qdev_get_gpio_in(ledma, 0));
 
     nvram = m48t59_init(slavio_irq[0], hwdef->nvram_base, 0, 0x2000, 1968, 8);
 
@@ -971,7 +972,9 @@ static void sun4m_hw_init(const struct sun4m_hwdef *hwdef,
 
     esp_init(hwdef->esp_base, 2,
              espdma_memory_read, espdma_memory_write,
-             espdma, espdma_irq, &esp_reset, &dma_enable);
+             espdma,
+             qdev_get_gpio_in(espdma, 0),
+             &esp_reset, &dma_enable);
 
     qdev_connect_gpio_out(espdma, 0, esp_reset);
     qdev_connect_gpio_out(espdma, 1, dma_enable);
-- 
1.7.10.4