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[Sys] Successfully spin up a new process from disk.

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This commit is contained in:
Drew Galbraith 2023-11-15 09:47:32 -08:00
parent e5568450c2
commit 7c105c8a31
22 changed files with 415 additions and 191 deletions
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13
sys/denali/ahci/command.cpp
View file

@ -7,10 +7,11 @@
Command::~Command() {}
DmaReadCommand::DmaReadCommand(uint64_t lba, uint64_t sector_cnt,
Mutex& callback_mutex)
: lba_(lba), sector_cnt_(sector_cnt), callback_mutex_(callback_mutex) {
region_ = MappedMemoryRegion::ContiguousPhysical(sector_cnt * 512);
}
uint64_t paddr, Mutex& callback_mutex)
: lba_(lba),
sector_cnt_(sector_cnt),
paddr_(paddr),
callback_mutex_(callback_mutex) {}
DmaReadCommand::~DmaReadCommand() {}
@ -43,7 +44,7 @@ void DmaReadCommand::PopulateFis(uint8_t* command_fis) {
memcpy(command_fis, &fis, sizeof(fis));
}
void DmaReadCommand::PopulatePrdt(PhysicalRegionDescriptor* prdt) {
prdt[0].region_address = region_.paddr();
prdt[0].byte_count = region_.size();
prdt[0].region_address = paddr_;
prdt[0].byte_count = sector_cnt_ * 512;
}
void DmaReadCommand::Callback() { callback_mutex_.Release(); }

7
sys/denali/ahci/command.h
View file

@ -17,7 +17,8 @@ class Command {
class DmaReadCommand : public Command {
public:
DmaReadCommand(uint64_t lba, uint64_t sector_cnt, Mutex& callback_mutex);
DmaReadCommand(uint64_t lba, uint64_t sector_cnt, uint64_t dest_paddr,
Mutex& callback_mutex);
virtual ~DmaReadCommand() override;
@ -26,11 +27,9 @@ class DmaReadCommand : public Command {
void Callback() override;
z_cap_t GetMemoryRegion() { return region_.cap(); }
private:
uint64_t lba_;
uint64_t sector_cnt_;
uint64_t paddr_;
Mutex& callback_mutex_;
MappedMemoryRegion region_;
};