diff options
Diffstat (limited to 'qemu/hw/audio/gus.c')
| -rw-r--r-- | qemu/hw/audio/gus.c | 321 |
1 files changed, 0 insertions, 321 deletions
diff --git a/qemu/hw/audio/gus.c b/qemu/hw/audio/gus.c deleted file mode 100644 index 9dd6947be..000000000 --- a/qemu/hw/audio/gus.c +++ /dev/null @@ -1,321 +0,0 @@ -/* - * QEMU Proxy for Gravis Ultrasound GF1 emulation by Tibor "TS" Schütz - * - * Copyright (c) 2002-2005 Vassili Karpov (malc) - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN - * THE SOFTWARE. - */ -#include "qemu/osdep.h" -#include "qapi/error.h" -#include "hw/hw.h" -#include "hw/audio/audio.h" -#include "audio/audio.h" -#include "hw/isa/isa.h" -#include "gusemu.h" -#include "gustate.h" - -#define dolog(...) AUD_log ("audio", __VA_ARGS__) -#ifdef DEBUG -#define ldebug(...) dolog (__VA_ARGS__) -#else -#define ldebug(...) -#endif - -#ifdef HOST_WORDS_BIGENDIAN -#define GUS_ENDIANNESS 1 -#else -#define GUS_ENDIANNESS 0 -#endif - -#define TYPE_GUS "gus" -#define GUS(obj) OBJECT_CHECK (GUSState, (obj), TYPE_GUS) - -typedef struct GUSState { - ISADevice dev; - GUSEmuState emu; - QEMUSoundCard card; - uint32_t freq; - uint32_t port; - int pos, left, shift, irqs; - GUSsample *mixbuf; - uint8_t himem[1024 * 1024 + 32 + 4096]; - int samples; - SWVoiceOut *voice; - int64_t last_ticks; - qemu_irq pic; - IsaDma *isa_dma; -} GUSState; - -static uint32_t gus_readb(void *opaque, uint32_t nport) -{ - GUSState *s = opaque; - - return gus_read (&s->emu, nport, 1); -} - -static void gus_writeb(void *opaque, uint32_t nport, uint32_t val) -{ - GUSState *s = opaque; - - gus_write (&s->emu, nport, 1, val); -} - -static int write_audio (GUSState *s, int samples) -{ - int net = 0; - int pos = s->pos; - - while (samples) { - int nbytes, wbytes, wsampl; - - nbytes = samples << s->shift; - wbytes = AUD_write ( - s->voice, - s->mixbuf + (pos << (s->shift - 1)), - nbytes - ); - - if (wbytes) { - wsampl = wbytes >> s->shift; - - samples -= wsampl; - pos = (pos + wsampl) % s->samples; - - net += wsampl; - } - else { - break; - } - } - - return net; -} - -static void GUS_callback (void *opaque, int free) -{ - int samples, to_play, net = 0; - GUSState *s = opaque; - - samples = free >> s->shift; - to_play = audio_MIN (samples, s->left); - - while (to_play) { - int written = write_audio (s, to_play); - - if (!written) { - goto reset; - } - - s->left -= written; - to_play -= written; - samples -= written; - net += written; - } - - samples = audio_MIN (samples, s->samples); - if (samples) { - gus_mixvoices (&s->emu, s->freq, samples, s->mixbuf); - - while (samples) { - int written = write_audio (s, samples); - if (!written) { - break; - } - samples -= written; - net += written; - } - } - s->left = samples; - - reset: - gus_irqgen (&s->emu, muldiv64 (net, 1000000, s->freq)); -} - -int GUS_irqrequest (GUSEmuState *emu, int hwirq, int n) -{ - GUSState *s = emu->opaque; - /* qemu_irq_lower (s->pic); */ - qemu_irq_raise (s->pic); - s->irqs += n; - ldebug ("irqrequest %d %d %d\n", hwirq, n, s->irqs); - return n; -} - -void GUS_irqclear (GUSEmuState *emu, int hwirq) -{ - GUSState *s = emu->opaque; - ldebug ("irqclear %d %d\n", hwirq, s->irqs); - qemu_irq_lower (s->pic); - s->irqs -= 1; -#ifdef IRQ_STORM - if (s->irqs > 0) { - qemu_irq_raise (s->pic[hwirq]); - } -#endif -} - -void GUS_dmarequest (GUSEmuState *emu) -{ - GUSState *s = emu->opaque; - IsaDmaClass *k = ISADMA_GET_CLASS(s->isa_dma); - ldebug ("dma request %d\n", der->gusdma); - k->hold_DREQ(s->isa_dma, s->emu.gusdma); -} - -static int GUS_read_DMA (void *opaque, int nchan, int dma_pos, int dma_len) -{ - GUSState *s = opaque; - IsaDmaClass *k = ISADMA_GET_CLASS(s->isa_dma); - char tmpbuf[4096]; - int pos = dma_pos, mode, left = dma_len - dma_pos; - - ldebug ("read DMA %#x %d\n", dma_pos, dma_len); - mode = k->has_autoinitialization(s->isa_dma, s->emu.gusdma); - while (left) { - int to_copy = audio_MIN ((size_t) left, sizeof (tmpbuf)); - int copied; - - ldebug ("left=%d to_copy=%d pos=%d\n", left, to_copy, pos); - copied = k->read_memory(s->isa_dma, nchan, tmpbuf, pos, to_copy); - gus_dma_transferdata (&s->emu, tmpbuf, copied, left == copied); - left -= copied; - pos += copied; - } - - if (((mode >> 4) & 1) == 0) { - k->release_DREQ(s->isa_dma, s->emu.gusdma); - } - return dma_len; -} - -static const VMStateDescription vmstate_gus = { - .name = "gus", - .version_id = 2, - .minimum_version_id = 2, - .fields = (VMStateField[]) { - VMSTATE_INT32 (pos, GUSState), - VMSTATE_INT32 (left, GUSState), - VMSTATE_INT32 (shift, GUSState), - VMSTATE_INT32 (irqs, GUSState), - VMSTATE_INT32 (samples, GUSState), - VMSTATE_INT64 (last_ticks, GUSState), - VMSTATE_BUFFER (himem, GUSState), - VMSTATE_END_OF_LIST () - } -}; - -static const MemoryRegionPortio gus_portio_list1[] = { - {0x000, 1, 1, .write = gus_writeb }, - {0x006, 10, 1, .read = gus_readb, .write = gus_writeb }, - {0x100, 8, 1, .read = gus_readb, .write = gus_writeb }, - PORTIO_END_OF_LIST (), -}; - -static const MemoryRegionPortio gus_portio_list2[] = { - {0, 2, 1, .read = gus_readb }, - PORTIO_END_OF_LIST (), -}; - -static void gus_realizefn (DeviceState *dev, Error **errp) -{ - ISADevice *d = ISA_DEVICE(dev); - GUSState *s = GUS (dev); - IsaDmaClass *k; - struct audsettings as; - - AUD_register_card ("gus", &s->card); - - as.freq = s->freq; - as.nchannels = 2; - as.fmt = AUD_FMT_S16; - as.endianness = GUS_ENDIANNESS; - - s->voice = AUD_open_out ( - &s->card, - NULL, - "gus", - s, - GUS_callback, - &as - ); - - if (!s->voice) { - AUD_remove_card (&s->card); - error_setg(errp, "No voice"); - return; - } - - s->shift = 2; - s->samples = AUD_get_buffer_size_out (s->voice) >> s->shift; - s->mixbuf = g_malloc0 (s->samples << s->shift); - - isa_register_portio_list (d, s->port, gus_portio_list1, s, "gus"); - isa_register_portio_list (d, (s->port + 0x100) & 0xf00, - gus_portio_list2, s, "gus"); - - s->isa_dma = isa_get_dma(isa_bus_from_device(d), s->emu.gusdma); - k = ISADMA_GET_CLASS(s->isa_dma); - k->register_channel(s->isa_dma, s->emu.gusdma, GUS_read_DMA, s); - s->emu.himemaddr = s->himem; - s->emu.gusdatapos = s->emu.himemaddr + 1024 * 1024 + 32; - s->emu.opaque = s; - isa_init_irq (d, &s->pic, s->emu.gusirq); - - AUD_set_active_out (s->voice, 1); -} - -static int GUS_init (ISABus *bus) -{ - isa_create_simple (bus, TYPE_GUS); - return 0; -} - -static Property gus_properties[] = { - DEFINE_PROP_UINT32 ("freq", GUSState, freq, 44100), - DEFINE_PROP_UINT32 ("iobase", GUSState, port, 0x240), - DEFINE_PROP_UINT32 ("irq", GUSState, emu.gusirq, 7), - DEFINE_PROP_UINT32 ("dma", GUSState, emu.gusdma, 3), - DEFINE_PROP_END_OF_LIST (), -}; - -static void gus_class_initfn (ObjectClass *klass, void *data) -{ - DeviceClass *dc = DEVICE_CLASS (klass); - - dc->realize = gus_realizefn; - set_bit(DEVICE_CATEGORY_SOUND, dc->categories); - dc->desc = "Gravis Ultrasound GF1"; - dc->vmsd = &vmstate_gus; - dc->props = gus_properties; -} - -static const TypeInfo gus_info = { - .name = TYPE_GUS, - .parent = TYPE_ISA_DEVICE, - .instance_size = sizeof (GUSState), - .class_init = gus_class_initfn, -}; - -static void gus_register_types (void) -{ - type_register_static (&gus_info); - isa_register_soundhw("gus", "Gravis Ultrasound GF1", GUS_init); -} - -type_init (gus_register_types) |