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[Denali] Use semaphores for DMA callback signaling.

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This commit is contained in:
Drew Galbraith 2023-11-22 10:56:07 -08:00
parent 4c2492e985
commit 2b8ae027df
4 changed files with 19 additions and 22 deletions
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8
sys/denali/ahci/command.cpp
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@ -7,11 +7,11 @@
Command::~Command() {}
DmaReadCommand::DmaReadCommand(uint64_t lba, uint64_t sector_cnt,
uint64_t paddr, Mutex& callback_mutex)
uint64_t paddr)
: lba_(lba),
sector_cnt_(sector_cnt),
paddr_(paddr),
callback_mutex_(callback_mutex) {}
callback_semaphore_() {}
DmaReadCommand::~DmaReadCommand() {}
@ -47,4 +47,6 @@ void DmaReadCommand::PopulatePrdt(PhysicalRegionDescriptor* prdt) {
prdt[0].region_address = paddr_;
prdt[0].byte_count = sector_cnt_ * 512;
}
void DmaReadCommand::Callback() { callback_mutex_.Release(); }
void DmaReadCommand::SignalComplete() { callback_semaphore_.Signal(); }
void DmaReadCommand::WaitComplete() { callback_semaphore_.Wait(); }