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e2e72821e2
Oftentimes, many of our countrollers are just doing a simple countdown and don't perform any real work for the cycle. Pull those parts out into headers so that the compiler can 'see' that and optimize accordingly.
61 lines
1.4 KiB
C
61 lines
1.4 KiB
C
//
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// ai/controller.h: Audio interface controller.
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//
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// CEN64: Cycle-Accurate Nintendo 64 Emulator.
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// Copyright (C) 2015, Tyler J. Stachecki.
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//
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// This file is subject to the terms and conditions defined in
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// 'LICENSE', which is part of this source code package.
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//
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#ifndef __ai_controller_h__
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#define __ai_controller_h__
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#include "common.h"
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#include "ai/context.h"
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struct bus_controller *bus;
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enum ai_register {
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#define X(reg) reg,
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#include "ai/registers.md"
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#undef X
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NUM_AI_REGISTERS
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};
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#ifdef DEBUG_MMIO_REGISTER_ACCESS
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extern const char *ap_register_mnemonics[NUM_AI_REGISTERS];
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#endif
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struct ai_fifo_entry {
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uint32_t address;
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uint32_t length;
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};
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struct ai_controller {
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struct bus_controller *bus;
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uint32_t regs[NUM_AI_REGISTERS];
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struct cen64_ai_context ctx;
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uint64_t counter;
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unsigned fifo_count, fifo_wi, fifo_ri;
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struct ai_fifo_entry fifo[2];
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bool no_output;
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};
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cen64_cold int ai_init(struct ai_controller *ai, struct bus_controller *bus,
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bool no_interface);
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// Only invoke ai_cycle_ when the counter has expired (timeout).
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void ai_cycle_(struct ai_controller *ai);
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cen64_flatten cen64_hot static inline void ai_cycle(struct ai_controller *ai) {
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if (unlikely(ai->counter-- == 0))
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ai_cycle_(ai);
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}
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int read_ai_regs(void *opaque, uint32_t address, uint32_t *word);
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int write_ai_regs(void *opaque, uint32_t address, uint32_t word, uint32_t dqm);
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#endif
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