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-rw-r--r--hw/audio/milkymist-ac97.c360
1 files changed, 0 insertions, 360 deletions
diff --git a/hw/audio/milkymist-ac97.c b/hw/audio/milkymist-ac97.c
deleted file mode 100644
index 7d2e057038..0000000000
--- a/hw/audio/milkymist-ac97.c
+++ /dev/null
@@ -1,360 +0,0 @@
-/*
- * QEMU model of the Milkymist System Controller.
- *
- * Copyright (c) 2010 Michael Walle <michael@walle.cc>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, see <http://www.gnu.org/licenses/>.
- *
- *
- * Specification available at:
- * http://milkymist.walle.cc/socdoc/ac97.pdf
- */
-
-#include "qemu/osdep.h"
-#include "hw/irq.h"
-#include "hw/sysbus.h"
-#include "migration/vmstate.h"
-#include "trace.h"
-#include "audio/audio.h"
-#include "qemu/error-report.h"
-#include "qemu/module.h"
-#include "qom/object.h"
-
-enum {
- R_AC97_CTRL = 0,
- R_AC97_ADDR,
- R_AC97_DATAOUT,
- R_AC97_DATAIN,
- R_D_CTRL,
- R_D_ADDR,
- R_D_REMAINING,
- R_RESERVED,
- R_U_CTRL,
- R_U_ADDR,
- R_U_REMAINING,
- R_MAX
-};
-
-enum {
- AC97_CTRL_RQEN = (1<<0),
- AC97_CTRL_WRITE = (1<<1),
-};
-
-enum {
- CTRL_EN = (1<<0),
-};
-
-#define TYPE_MILKYMIST_AC97 "milkymist-ac97"
-OBJECT_DECLARE_SIMPLE_TYPE(MilkymistAC97State, MILKYMIST_AC97)
-
-struct MilkymistAC97State {
- SysBusDevice parent_obj;
-
- MemoryRegion regs_region;
-
- QEMUSoundCard card;
- SWVoiceIn *voice_in;
- SWVoiceOut *voice_out;
-
- uint32_t regs[R_MAX];
-
- qemu_irq crrequest_irq;
- qemu_irq crreply_irq;
- qemu_irq dmar_irq;
- qemu_irq dmaw_irq;
-};
-
-static void update_voices(MilkymistAC97State *s)
-{
- if (s->regs[R_D_CTRL] & CTRL_EN) {
- AUD_set_active_out(s->voice_out, 1);
- } else {
- AUD_set_active_out(s->voice_out, 0);
- }
-
- if (s->regs[R_U_CTRL] & CTRL_EN) {
- AUD_set_active_in(s->voice_in, 1);
- } else {
- AUD_set_active_in(s->voice_in, 0);
- }
-}
-
-static uint64_t ac97_read(void *opaque, hwaddr addr,
- unsigned size)
-{
- MilkymistAC97State *s = opaque;
- uint32_t r = 0;
-
- addr >>= 2;
- switch (addr) {
- case R_AC97_CTRL:
- case R_AC97_ADDR:
- case R_AC97_DATAOUT:
- case R_AC97_DATAIN:
- case R_D_CTRL:
- case R_D_ADDR:
- case R_D_REMAINING:
- case R_U_CTRL:
- case R_U_ADDR:
- case R_U_REMAINING:
- r = s->regs[addr];
- break;
-
- default:
- error_report("milkymist_ac97: read access to unknown register 0x"
- TARGET_FMT_plx, addr << 2);
- break;
- }
-
- trace_milkymist_ac97_memory_read(addr << 2, r);
-
- return r;
-}
-
-static void ac97_write(void *opaque, hwaddr addr, uint64_t value,
- unsigned size)
-{
- MilkymistAC97State *s = opaque;
-
- trace_milkymist_ac97_memory_write(addr, value);
-
- addr >>= 2;
- switch (addr) {
- case R_AC97_CTRL:
- /* always raise an IRQ according to the direction */
- if (value & AC97_CTRL_RQEN) {
- if (value & AC97_CTRL_WRITE) {
- trace_milkymist_ac97_pulse_irq_crrequest();
- qemu_irq_pulse(s->crrequest_irq);
- } else {
- trace_milkymist_ac97_pulse_irq_crreply();
- qemu_irq_pulse(s->crreply_irq);
- }
- }
-
- /* RQEN is self clearing */
- s->regs[addr] = value & ~AC97_CTRL_RQEN;
- break;
- case R_D_CTRL:
- case R_U_CTRL:
- s->regs[addr] = value;
- update_voices(s);
- break;
- case R_AC97_ADDR:
- case R_AC97_DATAOUT:
- case R_AC97_DATAIN:
- case R_D_ADDR:
- case R_D_REMAINING:
- case R_U_ADDR:
- case R_U_REMAINING:
- s->regs[addr] = value;
- break;
-
- default:
- error_report("milkymist_ac97: write access to unknown register 0x"
- TARGET_FMT_plx, addr);
- break;
- }
-
-}
-
-static const MemoryRegionOps ac97_mmio_ops = {
- .read = ac97_read,
- .write = ac97_write,
- .valid = {
- .min_access_size = 4,
- .max_access_size = 4,
- },
- .endianness = DEVICE_NATIVE_ENDIAN,
-};
-
-static void ac97_in_cb(void *opaque, int avail_b)
-{
- MilkymistAC97State *s = opaque;
- uint8_t buf[4096];
- uint32_t remaining = s->regs[R_U_REMAINING];
- int temp = MIN(remaining, avail_b);
- uint32_t addr = s->regs[R_U_ADDR];
- int transferred = 0;
-
- trace_milkymist_ac97_in_cb(avail_b, remaining);
-
- /* prevent from raising an IRQ */
- if (temp == 0) {
- return;
- }
-
- while (temp) {
- int acquired, to_copy;
-
- to_copy = MIN(temp, sizeof(buf));
- acquired = AUD_read(s->voice_in, buf, to_copy);
- if (!acquired) {
- break;
- }
-
- cpu_physical_memory_write(addr, buf, acquired);
-
- temp -= acquired;
- addr += acquired;
- transferred += acquired;
- }
-
- trace_milkymist_ac97_in_cb_transferred(transferred);
-
- s->regs[R_U_ADDR] = addr;
- s->regs[R_U_REMAINING] -= transferred;
-
- if ((s->regs[R_U_CTRL] & CTRL_EN) && (s->regs[R_U_REMAINING] == 0)) {
- trace_milkymist_ac97_pulse_irq_dmaw();
- qemu_irq_pulse(s->dmaw_irq);
- }
-}
-
-static void ac97_out_cb(void *opaque, int free_b)
-{
- MilkymistAC97State *s = opaque;
- uint8_t buf[4096];
- uint32_t remaining = s->regs[R_D_REMAINING];
- int temp = MIN(remaining, free_b);
- uint32_t addr = s->regs[R_D_ADDR];
- int transferred = 0;
-
- trace_milkymist_ac97_out_cb(free_b, remaining);
-
- /* prevent from raising an IRQ */
- if (temp == 0) {
- return;
- }
-
- while (temp) {
- int copied, to_copy;
-
- to_copy = MIN(temp, sizeof(buf));
- cpu_physical_memory_read(addr, buf, to_copy);
- copied = AUD_write(s->voice_out, buf, to_copy);
- if (!copied) {
- break;
- }
- temp -= copied;
- addr += copied;
- transferred += copied;
- }
-
- trace_milkymist_ac97_out_cb_transferred(transferred);
-
- s->regs[R_D_ADDR] = addr;
- s->regs[R_D_REMAINING] -= transferred;
-
- if ((s->regs[R_D_CTRL] & CTRL_EN) && (s->regs[R_D_REMAINING] == 0)) {
- trace_milkymist_ac97_pulse_irq_dmar();
- qemu_irq_pulse(s->dmar_irq);
- }
-}
-
-static void milkymist_ac97_reset(DeviceState *d)
-{
- MilkymistAC97State *s = MILKYMIST_AC97(d);
- int i;
-
- for (i = 0; i < R_MAX; i++) {
- s->regs[i] = 0;
- }
-
- AUD_set_active_in(s->voice_in, 0);
- AUD_set_active_out(s->voice_out, 0);
-}
-
-static int ac97_post_load(void *opaque, int version_id)
-{
- MilkymistAC97State *s = opaque;
-
- update_voices(s);
-
- return 0;
-}
-
-static void milkymist_ac97_init(Object *obj)
-{
- MilkymistAC97State *s = MILKYMIST_AC97(obj);
- SysBusDevice *dev = SYS_BUS_DEVICE(obj);
-
- sysbus_init_irq(dev, &s->crrequest_irq);
- sysbus_init_irq(dev, &s->crreply_irq);
- sysbus_init_irq(dev, &s->dmar_irq);
- sysbus_init_irq(dev, &s->dmaw_irq);
-
- memory_region_init_io(&s->regs_region, obj, &ac97_mmio_ops, s,
- "milkymist-ac97", R_MAX * 4);
- sysbus_init_mmio(dev, &s->regs_region);
-}
-
-static void milkymist_ac97_realize(DeviceState *dev, Error **errp)
-{
- MilkymistAC97State *s = MILKYMIST_AC97(dev);
- struct audsettings as;
-
- AUD_register_card("Milkymist AC'97", &s->card);
-
- as.freq = 48000;
- as.nchannels = 2;
- as.fmt = AUDIO_FORMAT_S16;
- as.endianness = 1;
-
- s->voice_in = AUD_open_in(&s->card, s->voice_in,
- "mm_ac97.in", s, ac97_in_cb, &as);
- s->voice_out = AUD_open_out(&s->card, s->voice_out,
- "mm_ac97.out", s, ac97_out_cb, &as);
-}
-
-static const VMStateDescription vmstate_milkymist_ac97 = {
- .name = "milkymist-ac97",
- .version_id = 1,
- .minimum_version_id = 1,
- .post_load = ac97_post_load,
- .fields = (VMStateField[]) {
- VMSTATE_UINT32_ARRAY(regs, MilkymistAC97State, R_MAX),
- VMSTATE_END_OF_LIST()
- }
-};
-
-static Property milkymist_ac97_properties[] = {
- DEFINE_AUDIO_PROPERTIES(MilkymistAC97State, card),
- DEFINE_PROP_END_OF_LIST(),
-};
-
-static void milkymist_ac97_class_init(ObjectClass *klass, void *data)
-{
- DeviceClass *dc = DEVICE_CLASS(klass);
-
- dc->realize = milkymist_ac97_realize;
- dc->reset = milkymist_ac97_reset;
- dc->vmsd = &vmstate_milkymist_ac97;
- device_class_set_props(dc, milkymist_ac97_properties);
-}
-
-static const TypeInfo milkymist_ac97_info = {
- .name = TYPE_MILKYMIST_AC97,
- .parent = TYPE_SYS_BUS_DEVICE,
- .instance_size = sizeof(MilkymistAC97State),
- .instance_init = milkymist_ac97_init,
- .class_init = milkymist_ac97_class_init,
-};
-
-static void milkymist_ac97_register_types(void)
-{
- type_register_static(&milkymist_ac97_info);
-}
-
-type_init(milkymist_ac97_register_types)
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