esp: QOMify the internal ESP device state

Make this new QOM device state a child device of both the sysbus-esp and esp-pci
implementations.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20210304221103.6369-4-mark.cave-ayland@ilande.co.uk>

1 files changed, 37 insertions, 13 deletions

diff --git a/hw/scsi/esp-pci.c b/hw/scsi/esp-pci.c
index 4d7c2cab56..27a0d36e0b 100644
--- a/hw/scsi/esp-pci.c
+++ b/hw/scsi/esp-pci.c
@@ -79,8 +79,10 @@ struct PCIESPState {
 
 static void esp_pci_handle_idle(PCIESPState *pci, uint32_t val)
 {
+    ESPState *s = ESP(&pci->esp);
+
     trace_esp_pci_dma_idle(val);
-    esp_dma_enable(&pci->esp, 0, 0);
+    esp_dma_enable(s, 0, 0);
 }
 
 static void esp_pci_handle_blast(PCIESPState *pci, uint32_t val)
@@ -91,14 +93,18 @@ static void esp_pci_handle_blast(PCIESPState *pci, uint32_t val)
 
 static void esp_pci_handle_abort(PCIESPState *pci, uint32_t val)
 {
+    ESPState *s = ESP(&pci->esp);
+
     trace_esp_pci_dma_abort(val);
-    if (pci->esp.current_req) {
-        scsi_req_cancel(pci->esp.current_req);
+    if (s->current_req) {
+        scsi_req_cancel(s->current_req);
     }
 }
 
 static void esp_pci_handle_start(PCIESPState *pci, uint32_t val)
 {
+    ESPState *s = ESP(&pci->esp);
+
     trace_esp_pci_dma_start(val);
 
     pci->dma_regs[DMA_WBC] = pci->dma_regs[DMA_STC];
@@ -109,7 +115,7 @@ static void esp_pci_handle_start(PCIESPState *pci, uint32_t val)
                                | DMA_STAT_DONE | DMA_STAT_ABORT
                                | DMA_STAT_ERROR | DMA_STAT_PWDN);
 
-    esp_dma_enable(&pci->esp, 0, 1);
+    esp_dma_enable(s, 0, 1);
 }
 
 static void esp_pci_dma_write(PCIESPState *pci, uint32_t saddr, uint32_t val)
@@ -155,11 +161,12 @@ static void esp_pci_dma_write(PCIESPState *pci, uint32_t saddr, uint32_t val)
 
 static uint32_t esp_pci_dma_read(PCIESPState *pci, uint32_t saddr)
 {
+    ESPState *s = ESP(&pci->esp);
     uint32_t val;
 
     val = pci->dma_regs[saddr];
     if (saddr == DMA_STAT) {
-        if (pci->esp.rregs[ESP_RSTAT] & STAT_INT) {
+        if (s->rregs[ESP_RSTAT] & STAT_INT) {
             val |= DMA_STAT_SCSIINT;
         }
         if (!(pci->sbac & SBAC_STATUS)) {
@@ -176,6 +183,7 @@ static void esp_pci_io_write(void *opaque, hwaddr addr,
                              uint64_t val, unsigned int size)
 {
     PCIESPState *pci = opaque;
+    ESPState *s = ESP(&pci->esp);
 
     if (size < 4 || addr & 3) {
         /* need to upgrade request: we only support 4-bytes accesses */
@@ -183,7 +191,7 @@ static void esp_pci_io_write(void *opaque, hwaddr addr,
         int shift;
 
         if (addr < 0x40) {
-            current = pci->esp.wregs[addr >> 2];
+            current = s->wregs[addr >> 2];
         } else if (addr < 0x60) {
             current = pci->dma_regs[(addr - 0x40) >> 2];
         } else if (addr < 0x74) {
@@ -203,7 +211,7 @@ static void esp_pci_io_write(void *opaque, hwaddr addr,
 
     if (addr < 0x40) {
         /* SCSI core reg */
-        esp_reg_write(&pci->esp, addr >> 2, val);
+        esp_reg_write(s, addr >> 2, val);
     } else if (addr < 0x60) {
         /* PCI DMA CCB */
         esp_pci_dma_write(pci, (addr - 0x40) >> 2, val);
@@ -220,11 +228,12 @@ static uint64_t esp_pci_io_read(void *opaque, hwaddr addr,
                                 unsigned int size)
 {
     PCIESPState *pci = opaque;
+    ESPState *s = ESP(&pci->esp);
     uint32_t ret;
 
     if (addr < 0x40) {
         /* SCSI core reg */
-        ret = esp_reg_read(&pci->esp, addr >> 2);
+        ret = esp_reg_read(s, addr >> 2);
     } else if (addr < 0x60) {
         /* PCI DMA CCB */
         ret = esp_pci_dma_read(pci, (addr - 0x40) >> 2);
@@ -306,7 +315,9 @@ static const MemoryRegionOps esp_pci_io_ops = {
 static void esp_pci_hard_reset(DeviceState *dev)
 {
     PCIESPState *pci = PCI_ESP(dev);
-    esp_hard_reset(&pci->esp);
+    ESPState *s = ESP(&pci->esp);
+
+    esp_hard_reset(s);
     pci->dma_regs[DMA_CMD] &= ~(DMA_CMD_DIR | DMA_CMD_INTE_D | DMA_CMD_INTE_P
                               | DMA_CMD_MDL | DMA_CMD_DIAG | DMA_CMD_MASK);
     pci->dma_regs[DMA_WBC] &= ~0xffff;
@@ -353,9 +364,13 @@ static void esp_pci_scsi_realize(PCIDevice *dev, Error **errp)
 {
     PCIESPState *pci = PCI_ESP(dev);
     DeviceState *d = DEVICE(dev);
-    ESPState *s = &pci->esp;
+    ESPState *s = ESP(&pci->esp);
     uint8_t *pci_conf;
 
+    if (!qdev_realize(DEVICE(s), NULL, errp)) {
+        return;
+    }
+
     pci_conf = dev->config;
 
     /* Interrupt pin A */
@@ -374,11 +389,19 @@ static void esp_pci_scsi_realize(PCIDevice *dev, Error **errp)
     scsi_bus_new(&s->bus, sizeof(s->bus), d, &esp_pci_scsi_info, NULL);
 }
 
-static void esp_pci_scsi_uninit(PCIDevice *d)
+static void esp_pci_scsi_exit(PCIDevice *d)
 {
     PCIESPState *pci = PCI_ESP(d);
+    ESPState *s = ESP(&pci->esp);
+
+    qemu_free_irq(s->irq);
+}
+
+static void esp_pci_init(Object *obj)
+{
+    PCIESPState *pci = PCI_ESP(obj);
 
-    qemu_free_irq(pci->esp.irq);
+    object_initialize_child(obj, "esp", &pci->esp, TYPE_ESP);
 }
 
 static void esp_pci_class_init(ObjectClass *klass, void *data)
@@ -387,7 +410,7 @@ static void esp_pci_class_init(ObjectClass *klass, void *data)
     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
 
     k->realize = esp_pci_scsi_realize;
-    k->exit = esp_pci_scsi_uninit;
+    k->exit = esp_pci_scsi_exit;
     k->vendor_id = PCI_VENDOR_ID_AMD;
     k->device_id = PCI_DEVICE_ID_AMD_SCSI;
     k->revision = 0x10;
@@ -401,6 +424,7 @@ static void esp_pci_class_init(ObjectClass *klass, void *data)
 static const TypeInfo esp_pci_info = {
     .name = TYPE_AM53C974_DEVICE,
     .parent = TYPE_PCI_DEVICE,
+    .instance_init = esp_pci_init,
     .instance_size = sizeof(PCIESPState),
     .class_init = esp_pci_class_init,
     .interfaces = (InterfaceInfo[]) {