vt82c686: Split off via-[am]c97 into separate file in hw/audio

The via-[am]c97 code is supposed to implement the audio part of VIA
south bridge chips so it is better placed under hw/audio/. Split it
off into a separate file.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <af083634e3b9efe67e6c4247cf0185d3fa7b1810.1609584216.git.balaton@eik.bme.hu>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>

2 files changed, 107 insertions, 0 deletions

diff --git a/hw/audio/meson.build b/hw/audio/meson.build
index 549e9a0..32c42bd 100644
--- a/hw/audio/meson.build
+++ b/hw/audio/meson.build
@@ -11,4 +11,5 @@ softmmu_ss.add(when: 'CONFIG_MILKYMIST', if_true: files('milkymist-ac97.c'))
 softmmu_ss.add(when: 'CONFIG_PCSPK', if_true: files('pcspk.c'))
 softmmu_ss.add(when: 'CONFIG_PL041', if_true: files('pl041.c', 'lm4549.c'))
 softmmu_ss.add(when: 'CONFIG_SB16', if_true: files('sb16.c'))
+softmmu_ss.add(when: 'CONFIG_VT82C686', if_true: files('via-ac97.c'))
 softmmu_ss.add(when: 'CONFIG_WM8750', if_true: files('wm8750.c'))
diff --git a/hw/audio/via-ac97.c b/hw/audio/via-ac97.c
new file mode 100644
index 0000000..e617416
--- /dev/null
+++ b/hw/audio/via-ac97.c
@@ -0,0 +1,106 @@
+/*
+ * VIA south bridges sound support
+ *
+ * This work is licensed under the GNU GPL license version 2 or later.
+ */
+
+/*
+ * TODO: This is entirely boiler plate just registering empty PCI devices
+ * with the right ID guests expect, functionality should be added here.
+ */
+
+#include "qemu/osdep.h"
+#include "hw/isa/vt82c686.h"
+#include "hw/pci/pci.h"
+
+struct VIAAC97State {
+    PCIDevice dev;
+};
+
+struct VIAMC97State {
+    PCIDevice dev;
+};
+
+OBJECT_DECLARE_SIMPLE_TYPE(VIAAC97State, VIA_AC97)
+OBJECT_DECLARE_SIMPLE_TYPE(VIAMC97State, VIA_MC97)
+
+static void via_ac97_realize(PCIDevice *dev, Error **errp)
+{
+    VIAAC97State *s = VIA_AC97(dev);
+    uint8_t *pci_conf = s->dev.config;
+
+    pci_set_word(pci_conf + PCI_COMMAND, PCI_COMMAND_INVALIDATE |
+                 PCI_COMMAND_PARITY);
+    pci_set_word(pci_conf + PCI_STATUS, PCI_STATUS_CAP_LIST |
+                 PCI_STATUS_DEVSEL_MEDIUM);
+    pci_set_long(pci_conf + PCI_INTERRUPT_PIN, 0x03);
+}
+
+static void via_ac97_class_init(ObjectClass *klass, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(klass);
+    PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
+
+    k->realize = via_ac97_realize;
+    k->vendor_id = PCI_VENDOR_ID_VIA;
+    k->device_id = PCI_DEVICE_ID_VIA_AC97;
+    k->revision = 0x50;
+    k->class_id = PCI_CLASS_MULTIMEDIA_AUDIO;
+    set_bit(DEVICE_CATEGORY_SOUND, dc->categories);
+    dc->desc = "AC97";
+}
+
+static const TypeInfo via_ac97_info = {
+    .name          = TYPE_VIA_AC97,
+    .parent        = TYPE_PCI_DEVICE,
+    .instance_size = sizeof(VIAAC97State),
+    .class_init    = via_ac97_class_init,
+    .interfaces = (InterfaceInfo[]) {
+        { INTERFACE_CONVENTIONAL_PCI_DEVICE },
+        { },
+    },
+};
+
+static void via_mc97_realize(PCIDevice *dev, Error **errp)
+{
+    VIAMC97State *s = VIA_MC97(dev);
+    uint8_t *pci_conf = s->dev.config;
+
+    pci_set_word(pci_conf + PCI_COMMAND, PCI_COMMAND_INVALIDATE |
+                 PCI_COMMAND_VGA_PALETTE);
+    pci_set_word(pci_conf + PCI_STATUS, PCI_STATUS_DEVSEL_MEDIUM);
+    pci_set_long(pci_conf + PCI_INTERRUPT_PIN, 0x03);
+}
+
+static void via_mc97_class_init(ObjectClass *klass, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(klass);
+    PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
+
+    k->realize = via_mc97_realize;
+    k->vendor_id = PCI_VENDOR_ID_VIA;
+    k->device_id = PCI_DEVICE_ID_VIA_MC97;
+    k->class_id = PCI_CLASS_COMMUNICATION_OTHER;
+    k->revision = 0x30;
+    set_bit(DEVICE_CATEGORY_NETWORK, dc->categories);
+    dc->desc = "MC97";
+}
+
+static const TypeInfo via_mc97_info = {
+    .name          = TYPE_VIA_MC97,
+    .parent        = TYPE_PCI_DEVICE,
+    .instance_size = sizeof(VIAMC97State),
+    .class_init    = via_mc97_class_init,
+    .interfaces = (InterfaceInfo[]) {
+        { INTERFACE_CONVENTIONAL_PCI_DEVICE },
+        { },
+    },
+};
+
+static void via_ac97_register_types(void)
+{
+    type_register_static(&via_ac97_info);
+    type_register_static(&via_mc97_info);
+}
+
+type_init(via_ac97_register_types)