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De-duplicate entry field on the SGD structure

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This commit is contained in:
RichardG867
2021-07-18 16:17:56 -03:00
parent 292874f772
commit 7db35aa9b6
1 changed files with 37 additions and 37 deletions
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36
src/sound/snd_ac97_via.c
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@@ -35,10 +35,9 @@ typedef struct {
uint8_t id;
struct _ac97_via_ *dev;
uint64_t entry;
uint32_t entry_ptr, sample_ptr, fifo_pos, fifo_end;
int32_t sample_count;
uint8_t fifo[32];
uint8_t entry_flags, fifo[32];
pc_timer_t timer;
} ac97_via_sgd_t;
@@ -281,7 +280,7 @@ ac97_via_sgd_write(uint16_t addr, uint8_t val, void *priv)
dev->sgd_regs[addr & 0xf0] &= ~0x44;
/* Start at the specified entry pointer. */
dev->sgd[addr >> 4].entry = 0;
dev->sgd[addr >> 4].sample_ptr = 0;
dev->sgd[addr >> 4].entry_ptr = (dev->sgd_regs[(addr & 0xf0) | 0x7] << 24) | (dev->sgd_regs[(addr & 0xf0) | 0x6] << 16) | (dev->sgd_regs[(addr & 0xf0) | 0x5] << 8) | (dev->sgd_regs[(addr & 0xf0) | 0x4] & 0xfe);
/* Start the actual SGD process. */
@@ -483,27 +482,28 @@ ac97_via_sgd_process(void *priv)
/* Process SGD if active, unless this is Audio Read and there's no room in the FIFO. */
if (((dev->sgd_regs[sgd->id] & 0xc4) == 0x80) && (sgd->id || ((sgd->fifo_end - sgd->fifo_pos) <= (sizeof(sgd->fifo) - 4)))) {
/* Move on to the next block if no entry is present. */
if (!sgd->entry) {
if (!sgd->sample_ptr) {
/* Start at first entry if no pointer is present. */
if (!sgd->entry_ptr)
sgd->entry_ptr = (dev->sgd_regs[sgd->id | 0x7] << 24) | (dev->sgd_regs[sgd->id | 0x6] << 16) | (dev->sgd_regs[sgd->id | 0x5] << 8) | (dev->sgd_regs[sgd->id | 0x4] & 0xfe);
/* Read entry. */
sgd->entry = ((uint64_t) mem_readl_phys(sgd->entry_ptr + 4) << 32ULL) | (uint64_t) mem_readl_phys(sgd->entry_ptr);
sgd->sample_ptr = mem_readl_phys(sgd->entry_ptr);
sgd->entry_ptr += 4;
sgd->sample_count = mem_readl_phys(sgd->entry_ptr);
sgd->entry_ptr += 4;
#ifdef ENABLE_AC97_VIA_LOG
if (sgd->entry == 0xffffffffffffffffULL)
if ((sgd->sample_ptr == 0xffffffff) || (sgd->sample_ptr == 0x00000000) ||
(sgd->sample_count == 0xffffffff) || (sgd->sample_count == 0x00000000))
fatal("AC97 VIA: Invalid SGD %d entry at %08X\n", sgd->id >> 4, sgd->entry_ptr);
#endif
/* Set sample pointer and count. */
sgd->sample_ptr = sgd->entry & 0xffffffff;
sgd->sample_count = (sgd->entry >> 32) & 0xffffff;
/* Extract flags from the most significant byte. */
sgd->entry_flags = sgd->sample_count >> 24;
sgd->sample_count &= 0xffffff;
ac97_via_log("AC97 VIA: Starting SGD %d block at %08X entry %08X%08X (start %08X len %06X) lostirqs %d\n", sgd->id >> 4, sgd->entry_ptr,
mem_readl_phys(sgd->entry_ptr + 4), mem_readl_phys(sgd->entry_ptr), sgd->sample_ptr, sgd->sample_count, ac97_via_lost_irqs);
/* Increment entry pointer now, as Linux expects it to be one block ahead. */
sgd->entry_ptr += 8;
ac97_via_log("AC97 VIA: Starting SGD %d block at %08X start %08X len %06X flags %02X lostirqs %d\n", sgd->id >> 4,
sgd->entry_ptr, sgd->sample_ptr, sgd->sample_count, sgd->entry_flags, ac97_via_lost_irqs);
}
if (sgd->id & 0x10) {
@@ -521,12 +521,12 @@ ac97_via_sgd_process(void *priv)
if (sgd->sample_count <= 0) {
ac97_via_log("AC97 VIA: Ending SGD %d block", sgd->id >> 4);
if (sgd->entry & 0x2000000000000000ULL) {
if (sgd->entry_flags & 0x20) {
ac97_via_log(" with STOP");
dev->sgd_regs[sgd->id] |= 0x04;
}
if (sgd->entry & 0x4000000000000000ULL) {
if (sgd->entry_flags & 0x40) {
ac97_via_log(" with FLAG");
/* Raise FLAG while also pausing SGD. */
@@ -538,7 +538,7 @@ ac97_via_sgd_process(void *priv)
#endif
}
if (sgd->entry & 0x8000000000000000ULL) {
if (sgd->entry_flags & 0x80) {
ac97_via_log(" with EOL");
/* Raise EOL. */
@@ -568,7 +568,7 @@ ac97_via_sgd_process(void *priv)
ac97_via_log("\n");
/* Move on to a new block on the next run. */
sgd->entry = sgd->sample_count = 0;
sgd->sample_ptr = sgd->sample_count = 0;
}
}