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[denali] Relocate AHCI structures to memory we control

This commit is contained in:
Drew Galbraith 2023-07-05 14:32:19 -07:00
parent 1412c5b73e
commit a8db218204
4 changed files with 29 additions and 26 deletions
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2
sys/denali/ahci/ahci.h
View File

@ -96,7 +96,7 @@ struct CommandTable {
uint8_t command_fis[64];
uint8_t atapi_command[16];
uint8_t reserved[48];
PhysicalRegionDescriptor prdt[65535];
PhysicalRegionDescriptor prdt[8];
} __attribute__((packed));
typedef enum {

45
sys/denali/ahci/ahci_device.cpp
View File

@ -9,35 +9,38 @@ AhciDevice::AhciDevice(AhciPort* port) : port_struct_(port) {
if ((port_struct_->sata_status & 0x103) != 0x103) {
return;
}
uint64_t cl_page = port_struct_->command_list_base & (~0xFFF);
uint64_t fis_page = port_struct_->fis_base & (~0xFFF);
if (cl_page != fis_page) {
crash("Non adjacent cl & fis", glcr::UNIMPLEMENTED);
}
// 0x0-0x400 -> Command List
// 0x400-0x500 -> Received FIS
// 0x500-0x2500 -> Command Tables (0x100 each) (Max PRDT Length is 8 for now)
command_structures_ = MappedMemoryRegion::ContiguousPhysical(0x2500);
uint64_t paddr = command_structures_.paddr();
command_structures_ = MappedMemoryRegion::DirectPhysical(cl_page, 0x1000);
command_list_ = reinterpret_cast<CommandList*>(command_structures_.vaddr());
port_struct_->command_list_base = paddr;
uint64_t cl_off = port_struct_->command_list_base & 0xFFF;
command_list_ =
reinterpret_cast<CommandList*>(command_structures_.vaddr() + cl_off);
uint64_t fis_off = port_struct_->fis_base & 0xFFF;
received_fis_ =
reinterpret_cast<ReceivedFis*>(command_structures_.vaddr() + fis_off);
reinterpret_cast<ReceivedFis*>(command_structures_.vaddr() + 0x400);
port_struct_->fis_base = paddr + 0x400;
// FIXME: Hacky
uint64_t ct_off =
command_list_->command_headers[0].command_table_base_addr & 0xFFF;
command_table_ =
reinterpret_cast<CommandTable*>(command_structures_.vaddr() + ct_off);
command_tables_ =
reinterpret_cast<CommandTable*>(command_structures_.vaddr() + 0x500);
for (uint64_t i = 0; i < 32; i++) {
command_list_->command_headers[i].command_table_base_addr =
(paddr + 0x500) + (0x100 * i);
}
port_struct_->interrupt_enable = 0xFFFFFFFF;
// Reset the CMD and FRE bits since we move these structures.
// FIXME: I think we need to poll these bits to make sure they become
// 0 before setting them back to one.
port_struct_->command &= ~(0x00000011);
port_struct_->command |= 0x00000011;
}
glcr::ErrorCode AhciDevice::IssueCommand(Command* command) {
command->PopulateFis(command_table_->command_fis);
command->PopulatePrdt(command_table_->prdt);
command->PopulateFis(command_tables_->command_fis);
command->PopulatePrdt(command_tables_->prdt);
command_list_->command_headers[0].command =
(sizeof(HostToDeviceRegisterFis) / 2) & 0x1F;
@ -62,7 +65,7 @@ void AhciDevice::DumpInfo() {
dbgln("Int enable: %x", port_struct_->interrupt_enable);
// Just dump one command info for now.
for (uint64_t i = 0; i < 1; i++) {
for (uint64_t i = 0; i < 32; i++) {
dbgln("Command Header: %u", i);
dbgln("Command %x", command_list_->command_headers[i].command);
dbgln("PRD Len: %x", command_list_->command_headers[i].prd_table_length);
@ -72,7 +75,7 @@ void AhciDevice::DumpInfo() {
}
void AhciDevice::HandleIrq() {
uint64_t int_status = port_struct_->interrupt_status;
uint32_t int_status = port_struct_->interrupt_status;
// FIXME: Probably only clear the interrupts we know how to handle.
port_struct_->interrupt_status = int_status;

2
sys/denali/ahci/ahci_device.h
View File

@ -30,7 +30,7 @@ class AhciDevice {
CommandList* command_list_ = nullptr;
ReceivedFis* received_fis_ = nullptr;
CommandTable* command_table_ = nullptr;
CommandTable* command_tables_ = nullptr;
Command* commands_[32];
volatile uint32_t commands_issued_ = 0;

6
sys/denali/ahci/ahci_driver.cpp
View File

@ -32,12 +32,12 @@ glcr::ErrorOr<glcr::UniquePtr<AhciDriver>> AhciDriver::Init(
uint64_t ahci_phys) {
PciDeviceHeader* header = LoadPciDeviceHeader(ahci_phys);
glcr::UniquePtr<AhciDriver> driver(new AhciDriver(header));
// RET_ERR(driver.LoadCapabilities());
// RET_ERR(driver->LoadCapabilities());
RET_ERR(driver->LoadHbaRegisters());
RET_ERR(driver->LoadDevices());
RET_ERR(driver->RegisterIrq());
// driver.DumpCapabilities();
// driver.DumpPorts();
// driver->DumpCapabilities();
// driver->DumpPorts();
return driver;
}