117 static uint8_t asc_fifo_get(ASCFIFOState *fs)  in asc_fifo_get()  argument
119     ASCState *s = container_of(fs, ASCState, fifos[fs->index]);  in asc_fifo_get()
120     bool fifo_half_irq_enabled = fs->extregs[ASC_EXTREGS_INTCTRL] & 1;  in asc_fifo_get()
123     assert(fs->cnt);  in asc_fifo_get()
125     val = fs->fifo[fs->rptr];  in asc_fifo_get()
126     trace_asc_fifo_get('A' + fs->index, fs->rptr, fs->cnt, val);  in asc_fifo_get()
128     fs->rptr++;  in asc_fifo_get()
129     fs->rptr &= 0x3ff;  in asc_fifo_get()
130     fs->cnt--;  in asc_fifo_get()
132     if (fs->cnt <= 0x1ff) {  in asc_fifo_get()
134         fs->int_status |= ASC_FIFO_STATUS_HALF_FULL;  in asc_fifo_get()
137         fs->int_status &= ~ASC_FIFO_STATUS_HALF_FULL;  in asc_fifo_get()
140     if (fs->cnt == 0x1ff && fifo_half_irq_enabled) {  in asc_fifo_get()
145     if (fs->cnt == 0) {  in asc_fifo_get()
147         fs->int_status |= ASC_FIFO_STATUS_FULL_EMPTY;  in asc_fifo_get()
168             ASCFIFOState *fs = &s->fifos[i];  in generate_fifo()  local
170             switch (fs->extregs[ASC_EXTREGS_FIFOCTRL] & 0x83) {  in generate_fifo()
176                 if (!fs->cnt) {  in generate_fifo()
181                 if (fs->xa_cnt == -1) {  in generate_fifo()
183                     fs->xa_flags = asc_fifo_get(fs);  in generate_fifo()
184                     fs->xa_cnt = 0;  in generate_fifo()
187                 shift = fs->xa_flags & 0xf;  in generate_fifo()
188                 filter = fs->xa_flags >> 4;  in generate_fifo()
189                 f0 = (int8_t)fs->extregs[ASC_EXTREGS_CDXA_DECOMP_FILT +  in generate_fifo()
191                 f1 = (int8_t)fs->extregs[ASC_EXTREGS_CDXA_DECOMP_FILT +  in generate_fifo()
194                 if ((fs->xa_cnt & 1) == 0) {  in generate_fifo()
195                     if (!fs->cnt) {  in generate_fifo()
200                     fs->xa_val = asc_fifo_get(fs);  in generate_fifo()
201                     d = (fs->xa_val & 0xf) << 12;  in generate_fifo()
203                     d = (fs->xa_val & 0xf0) << 8;  in generate_fifo()
205                 t = (d >> shift) + (((fs->xa_last[0] * f0) +  in generate_fifo()
206                                      (fs->xa_last[1] * f1) + 32) >> 6);  in generate_fifo()
220                 fs->xa_cnt++;  in generate_fifo()
222                 fs->xa_last[1] = fs->xa_last[0];  in generate_fifo()
223                 fs->xa_last[0] = (int16_t)t;  in generate_fifo()
225                 if (fs->xa_cnt == 28) {  in generate_fifo()
227                     fs->xa_cnt = -1;  in generate_fifo()
235                 if (fs->cnt) {  in generate_fifo()
236                     val = asc_fifo_get(fs);  in generate_fifo()
291             ASCFIFOState *fs = &s->fifos[channel >> 1];  in generate_wavetable()  local
300             sample = fs->fifo[0x200 * (channel >> 1) + offset];  in generate_wavetable()
368     ASCFIFOState *fs = opaque;  in asc_fifo_read()  local
370     trace_asc_read_fifo('A' + fs->index, addr, size, fs->fifo[addr]);  in asc_fifo_read()
371     return fs->fifo[addr];  in asc_fifo_read()
377     ASCFIFOState *fs = opaque;  in asc_fifo_write()  local
378     ASCState *s = container_of(fs, ASCState, fifos[fs->index]);  in asc_fifo_write()
379     bool fifo_half_irq_enabled = fs->extregs[ASC_EXTREGS_INTCTRL] & 1;  in asc_fifo_write()
381     trace_asc_write_fifo('A' + fs->index, addr, size, fs->wptr, fs->cnt, value);  in asc_fifo_write()
384         fs->fifo[fs->wptr++] = value;  in asc_fifo_write()
385         fs->wptr &= 0x3ff;  in asc_fifo_write()
386         fs->cnt++;  in asc_fifo_write()
388         if (fs->cnt <= 0x1ff) {  in asc_fifo_write()
390             fs->int_status |= ASC_FIFO_STATUS_HALF_FULL;  in asc_fifo_write()
393             fs->int_status &= ~ASC_FIFO_STATUS_HALF_FULL;  in asc_fifo_write()
396         if (fs->cnt == 0x200 && fifo_half_irq_enabled) {  in asc_fifo_write()
401         if (fs->cnt == 0x3ff) {  in asc_fifo_write()
403             fs->int_status |= ASC_FIFO_STATUS_FULL_EMPTY;  in asc_fifo_write()
407         fs->fifo[addr] = value;  in asc_fifo_write()
422 static void asc_fifo_reset(ASCFIFOState *fs);
514     ASCFIFOState *fs = opaque;  in asc_ext_read()  local
517     value = fs->extregs[addr];  in asc_ext_read()
519     trace_asc_read_extreg('A' + fs->index, addr, size, value);  in asc_ext_read()
526     ASCFIFOState *fs = opaque;  in asc_ext_write()  local
528     trace_asc_write_extreg('A' + fs->index, addr, size, value);  in asc_ext_write()
530     fs->extregs[addr] = value;  in asc_ext_write()
587 static void asc_fifo_reset(ASCFIFOState *fs)  in asc_fifo_reset()  argument
589     fs->wptr = 0;  in asc_fifo_reset()
590     fs->rptr = 0;  in asc_fifo_reset()
591     fs->cnt = 0;  in asc_fifo_reset()
592     fs->xa_cnt = -1;  in asc_fifo_reset()
593     fs->int_status = 0;  in asc_fifo_reset()
596 static void asc_fifo_init(ASCFIFOState *fs, int index)  in asc_fifo_init()  argument
598     ASCState *s = container_of(fs, ASCState, fifos[index]);  in asc_fifo_init()
601     fs->index = index;  in asc_fifo_init()
603     memory_region_init_io(&fs->mem_fifo, OBJECT(s), &asc_fifo_ops, fs,  in asc_fifo_init()
608     memory_region_init_io(&fs->mem_extregs, OBJECT(s), &asc_extregs_ops,  in asc_fifo_init()
609                           fs, name, ASC_EXTREG_SIZE);  in asc_fifo_init()