114 lines
3.5 KiB
C++
114 lines
3.5 KiB
C++
#include "ahci/ahci_device.h"
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#include <glacier/status/error.h>
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#include <mammoth/debug.h>
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#include <string.h>
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#include <zcall.h>
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AhciDevice::AhciDevice(AhciPort* port) : port_struct_(port) {
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if ((port_struct_->sata_status & 0x103) != 0x103) {
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return;
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}
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uint64_t cl_page = port_struct_->command_list_base & (~0xFFF);
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uint64_t fis_page = port_struct_->fis_base & (~0xFFF);
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if (cl_page != fis_page) {
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crash("Non adjacent cl & fis", glcr::UNIMPLEMENTED);
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}
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command_structures_ = MappedMemoryRegion::DirectPhysical(cl_page, 0x1000);
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uint64_t cl_off = port_struct_->command_list_base & 0xFFF;
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command_list_ =
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reinterpret_cast<CommandList*>(command_structures_.vaddr() + cl_off);
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uint64_t fis_off = port_struct_->fis_base & 0xFFF;
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received_fis_ =
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reinterpret_cast<ReceivedFis*>(command_structures_.vaddr() + fis_off);
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// FIXME: Hacky
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uint64_t ct_off =
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command_list_->command_headers[0].command_table_base_addr & 0xFFF;
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command_table_ =
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reinterpret_cast<CommandTable*>(command_structures_.vaddr() + ct_off);
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port_struct_->interrupt_enable = 0xFFFFFFFF;
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}
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glcr::ErrorCode AhciDevice::IssueCommand(Command* command) {
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command->PopulateFis(command_table_->command_fis);
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command->PopulatePrdt(command_table_->prdt);
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command_list_->command_headers[0].command =
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(sizeof(HostToDeviceRegisterFis) / 2) & 0x1F;
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command_list_->command_headers[0].prd_table_length = 1;
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command_list_->command_headers[0].prd_byte_count = 0;
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commands_[0] = command;
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commands_issued_ |= 1;
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port_struct_->command_issue |= 1;
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return glcr::OK;
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}
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void AhciDevice::DumpInfo() {
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dbgln("Comlist: %lx", port_struct_->command_list_base);
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dbgln("FIS: %lx", port_struct_->fis_base);
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dbgln("Command: %x", port_struct_->command);
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dbgln("Signature: %x", port_struct_->signature);
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dbgln("SATA status: %x", port_struct_->sata_status);
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dbgln("Int status: %x", port_struct_->interrupt_status);
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dbgln("Int enable: %x", port_struct_->interrupt_enable);
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// Just dump one command info for now.
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for (uint64_t i = 0; i < 1; i++) {
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dbgln("Command Header: %u", i);
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dbgln("Command %x", command_list_->command_headers[i].command);
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dbgln("PRD Len: %x", command_list_->command_headers[i].prd_table_length);
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dbgln("Command Table %lx",
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command_list_->command_headers[i].command_table_base_addr);
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}
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}
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void AhciDevice::HandleIrq() {
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uint64_t int_status = port_struct_->interrupt_status;
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// FIXME: Probably only clear the interrupts we know how to handle.
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port_struct_->interrupt_status = int_status;
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uint32_t commands_finished = commands_issued_ & ~port_struct_->command_issue;
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// FIXME: Pass error codes to the callback.
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for (uint64_t i = 0; i < 32; i++) {
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if (commands_finished & (1 << i)) {
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commands_issued_ &= ~(1 << i);
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commands_[i]->Callback();
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}
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}
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// TODO: Do something with this information.
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if (int_status & 0x1) {
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// Device to host.
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DeviceToHostRegisterFis& fis = received_fis_->device_to_host_register_fis;
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if (fis.fis_type != FIS_TYPE_REG_D2H) {
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dbgln("BAD FIS TYPE (exp,act): %x, %x", FIS_TYPE_REG_D2H, fis.fis_type);
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return;
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}
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if (fis.error) {
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dbgln("D2H err: %x", fis.error);
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dbgln("status: %x", fis.status);
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}
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}
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if (int_status & 0x2) {
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// PIO.
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PioSetupFis& fis = received_fis_->pio_set_fis;
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if (fis.fis_type != FIS_TYPE_PIO_SETUP) {
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dbgln("BAD FIS TYPE (exp,act): %x, %x", FIS_TYPE_PIO_SETUP, fis.fis_type);
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return;
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}
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if (fis.error) {
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dbgln("PIO err: %x", fis.error);
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}
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}
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}
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