mirror of https://github.com/xemu-project/xemu.git
143 lines
3.4 KiB
C
143 lines
3.4 KiB
C
/*
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* QEMU MCPX Audio Processing Unit implementation
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*
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* Copyright (c) 2012 espes
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 or
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* (at your option) version 3 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "hw.h"
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#include "pc.h"
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#include "pci.h"
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#include "mcpx.h"
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//#define DEBUG
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#ifdef DEBUG
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# define MCPX_DPRINTF(format, ...) printf(format, ## __VA_ARGS__)
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#else
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# define MCPX_DPRINTF(format, ...) do { } while (0)
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#endif
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typedef struct MCPXState {
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PCIDevice dev;
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qemu_irq irq;
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MemoryRegion mmio;
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MemoryRegion vp;
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} MCPXState;
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#define MCPX_DEVICE(obj) \
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OBJECT_CHECK(MCPXState, (obj), "mcpx")
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static uint64_t mcpx_read(void *opaque,
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hwaddr addr, unsigned int size)
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{
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MCPX_DPRINTF("mcpx: read [0x%llx]\n", addr);
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return 0;
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}
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static void mcpx_write(void *opaque, hwaddr addr,
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uint64_t val, unsigned int size)
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{
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MCPX_DPRINTF("mcpx: [0x%llx] = 0x%llx\n", addr, val);
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}
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/* Voice Processor */
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static uint64_t mcpx_vp_read(void *opaque,
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hwaddr addr, unsigned int size)
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{
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MCPX_DPRINTF("mcpx VP: read [0x%llx]\n", addr);
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switch (addr) {
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case 0x10: /* instruction queue free space */
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return 0x20;
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default:
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break;
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}
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return 0;
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}
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static void mcpx_vp_write(void *opaque, hwaddr addr,
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uint64_t val, unsigned int size)
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{
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MCPX_DPRINTF("mcpx VP: [0x%llx] = 0x%llx\n", addr, val);
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}
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static const MemoryRegionOps mcpx_mmio_ops = {
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.read = mcpx_read,
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.write = mcpx_write,
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};
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static const MemoryRegionOps mcpx_vp_ops = {
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.read = mcpx_vp_read,
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.write = mcpx_vp_write,
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};
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static int mcpx_initfn(PCIDevice *dev)
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{
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MCPXState *d = MCPX_DEVICE(dev);
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memory_region_init_io(&d->mmio, &mcpx_mmio_ops, d,
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"mcpx-mmio", 0x80000);
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memory_region_init_io(&d->vp, &mcpx_vp_ops, d,
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"mcpx-vp", 0x10000);
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memory_region_add_subregion(&d->mmio, 0x20000, &d->vp);
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pci_register_bar(&d->dev, 0, PCI_BASE_ADDRESS_SPACE_MEMORY, &d->mmio);
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return 0;
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}
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static void mcpx_class_init(ObjectClass *klass, void *data)
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{
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DeviceClass *dc = DEVICE_CLASS(klass);
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PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
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k->vendor_id = PCI_VENDOR_ID_NVIDIA;
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k->device_id = PCI_DEVICE_ID_NVIDIA_MCPX;
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k->revision = 210;
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k->class_id = PCI_CLASS_MULTIMEDIA_AUDIO;
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k->init = mcpx_initfn;
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dc->desc = "MCPX Audio Processing Unit";
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}
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static const TypeInfo mcpx_info = {
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.name = "mcpx",
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.parent = TYPE_PCI_DEVICE,
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.instance_size = sizeof(MCPXState),
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.class_init = mcpx_class_init,
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};
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static void mcpx_register(void)
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{
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type_register_static(&mcpx_info);
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}
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type_init(mcpx_register);
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void mcpx_init(PCIBus *bus, int devfn, qemu_irq irq)
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{
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PCIDevice *dev;
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MCPXState *d;
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dev = pci_create_simple(bus, devfn, "mcpx");
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d = MCPX_DEVICE(dev);
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d->irq = irq;
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} |