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-rw-r--r--dev/kernel/HALKit/AMD64/Storage/AHCI+Generic.cc10
-rw-r--r--dev/kernel/HALKit/AMD64/Storage/PIO+Generic+Next.cc280
-rw-r--r--dev/kernel/HALKit/AMD64/Storage/PIO+Generic.cc4
3 files changed, 292 insertions, 2 deletions
diff --git a/dev/kernel/HALKit/AMD64/Storage/AHCI+Generic.cc b/dev/kernel/HALKit/AMD64/Storage/AHCI+Generic.cc
index eba2f892..3f2cf9e8 100644
--- a/dev/kernel/HALKit/AMD64/Storage/AHCI+Generic.cc
+++ b/dev/kernel/HALKit/AMD64/Storage/AHCI+Generic.cc
@@ -71,7 +71,9 @@ STATIC Int32 drv_find_cmd_slot_ahci(HbaPort* port) noexcept;
STATIC Void drv_compute_disk_ahci() noexcept;
-/// @brief Identify device and read LBA info, Disk OEM vendor...
+/***********************************************************************************/
+/// @brief Identify device and read LBA info, Disk OEM vendor.
+/***********************************************************************************/
STATIC Void drv_compute_disk_ahci() noexcept {
kSATASectorCount = 0UL;
@@ -104,9 +106,11 @@ STATIC Void drv_compute_disk_ahci() noexcept {
(Void)(kout << "SATA Disk Model: " << kCurrentDiskModel << kendl);
}
+/***********************************************************************************/
/// @brief Finds a command slot for a HBA port.
/// @param port The port to search on.
-/// @return The slot, or ~0.
+/// @return The slot, or -1.
+/***********************************************************************************/
STATIC Int32 drv_find_cmd_slot_ahci(HbaPort* port) noexcept {
UInt32 slots = port->Sact | port->Ci;
@@ -118,11 +122,13 @@ STATIC Int32 drv_find_cmd_slot_ahci(HbaPort* port) noexcept {
return -1; // no free slot found
}
+/***********************************************************************************/
/// @brief Send an AHCI command, according to the template parameters.
/// @param lba Logical Block Address to look for.
/// @param buffer The data buffer to transfer.
/// @param sector_sz The disk's sector size (unused)
/// @param size_buffer The size of the **buffer** parameter.
+/***********************************************************************************/
template <BOOL Write, BOOL CommandOrCTRL, BOOL Identify>
STATIC Void drv_std_input_output_ahci(UInt64 lba, UInt8* buffer, SizeT sector_sz,
SizeT size_buffer) noexcept {
diff --git a/dev/kernel/HALKit/AMD64/Storage/PIO+Generic+Next.cc b/dev/kernel/HALKit/AMD64/Storage/PIO+Generic+Next.cc
new file mode 100644
index 00000000..dd6b9aea
--- /dev/null
+++ b/dev/kernel/HALKit/AMD64/Storage/PIO+Generic+Next.cc
@@ -0,0 +1,280 @@
+/* -------------------------------------------
+
+ Copyright (C) 2024-2025, Amlal El Mahrouss, all rights reserved.
+
+------------------------------------------- */
+
+/**
+ * @file PIO+Generic.cc
+ * @author Amlal El Mahrouss (amlal@nekernel.org)
+ * @brief ATA driver (PIO mode).
+ * @version 0.1
+ * @date 2024-02-02
+ *
+ * @copyright Copyright (c) Amlal El Mahrouss
+ *
+ */
+
+#if 0
+
+#include <ArchKit/ArchKit.h>
+#include <KernelKit/DriveMgr.h>
+#include <StorageKit/ATA.h>
+#include <modules/ATA/ATA.h>
+
+using namespace Kernel;
+using namespace Kernel::HAL;
+
+/// BUGS: 0
+
+#define kATADataLen 256
+
+STATIC Boolean kATADetected = false;
+STATIC UInt16 kATAIdentifyData[kATADataLen] = {0};
+STATIC Char kATADiskModel[50] = {"GENERIC PIO"};
+
+static Boolean drv_pio_std_wait_io(UInt16 IO) {
+ for (int i = 0; i < 400; i++) rt_in8(IO + ATA_REG_STATUS);
+
+ATAWaitForIO_Retry:
+ auto stat_rdy = rt_in8(IO + ATA_REG_STATUS);
+
+ if ((stat_rdy & ATA_SR_BSY)) goto ATAWaitForIO_Retry;
+
+ATAWaitForIO_Retry2:
+ stat_rdy = rt_in8(IO + ATA_REG_STATUS);
+
+ if (stat_rdy & ATA_SR_ERR) return false;
+
+ if (!(stat_rdy & ATA_SR_DRDY)) goto ATAWaitForIO_Retry2;
+
+ return true;
+}
+
+STATIC Void drv_pio_std_select(UInt16 Bus) {
+ if (Bus == ATA_PRIMARY_IO)
+ rt_out8(Bus + ATA_REG_HDDEVSEL, ATA_PRIMARY_SEL);
+ else
+ rt_out8(Bus + ATA_REG_HDDEVSEL, ATA_SECONDARY_SEL);
+}
+
+Boolean drv_pio_std_init(UInt16 Bus, UInt8 Drive, UInt16& OutBus, UInt8& OutMaster) {
+ UInt16 IO = Bus;
+
+ NE_UNUSED(Drive);
+
+ drv_pio_std_select(IO);
+
+ // Bus init, NEIN bit.
+ rt_out8(IO + ATA_REG_NEIN, 1);
+
+ // identify until it's good.
+ATAInit_Retry:
+ auto stat_rdy = rt_in8(IO + ATA_REG_STATUS);
+
+ if (stat_rdy & ATA_SR_ERR) {
+ return false;
+ }
+
+ if ((stat_rdy & ATA_SR_BSY)) goto ATAInit_Retry;
+
+ OutBus = (Bus == ATA_PRIMARY_IO) ? ATA_PRIMARY_IO : ATA_SECONDARY_IO;
+ OutMaster = (Bus == ATA_PRIMARY_IO) ? ATA_MASTER : ATA_SLAVE;
+
+ drv_pio_std_select(IO);
+
+ rt_out8(OutBus + ATA_REG_COMMAND, ATA_CMD_IDENTIFY);
+
+ while (!(rt_in8(IO + ATA_REG_STATUS) & ATA_SR_DRQ));
+
+
+ /// fetch serial info
+ /// model, speed, number of sectors...
+
+ for (SizeT i = 0ul; i < kATADataLen; ++i) {
+ kATAIdentifyData[i] = rt_in16(OutBus + ATA_REG_DATA);
+ }
+
+ for (Int32 i = 0; i < 20; i++) {
+ kATADiskModel[i * 2] = (kATAIdentifyData[27 + i] >> 8) & 0xFF;
+ kATADiskModel[i * 2 + 1] = kATAIdentifyData[27 + i] & 0xFF;
+ }
+
+ kATADiskModel[40] = '\0';
+
+ (Void)(kout << "Drive Model: " << kATADiskModel << kendl);
+
+ return true;
+}
+
+Void drv_pio_std_read(UInt64 Lba, UInt16 IO, UInt8 Master, Char* Buf, SizeT SectorSz, SizeT Size) {
+ Lba /= SectorSz;
+
+ UInt8 Command = ((!Master) ? 0xE0 : 0xF0);
+
+ drv_pio_std_wait_io(IO);
+ drv_pio_std_select(IO);
+
+ rt_out8(IO + ATA_REG_HDDEVSEL, (Command) | (((Lba) >> 24) & 0x0F));
+
+ rt_out8(IO + ATA_REG_SEC_COUNT0, ((Size + SectorSz) / SectorSz));
+
+ rt_out8(IO + ATA_REG_LBA0, (Lba) & 0xFF);
+ rt_out8(IO + ATA_REG_LBA1, (Lba) >> 8);
+ rt_out8(IO + ATA_REG_LBA2, (Lba) >> 16);
+ rt_out8(IO + ATA_REG_LBA3, (Lba) >> 24);
+
+ rt_out8(IO + ATA_REG_COMMAND, ATA_CMD_READ_PIO);
+
+ while (!(rt_in8(IO + ATA_REG_STATUS) & ATA_SR_DRQ));
+
+ for (SizeT IndexOff = 0; IndexOff < Size; IndexOff += 2) {
+ drv_pio_std_wait_io(IO);
+
+ auto in = rt_in16(IO + ATA_REG_DATA);
+
+ Buf[IndexOff] = in & 0xFF;
+ Buf[IndexOff + 1] = (in >> 8) & 0xFF;
+ }
+}
+
+Void drv_pio_std_write(UInt64 Lba, UInt16 IO, UInt8 Master, Char* Buf, SizeT SectorSz, SizeT Size) {
+ Lba /= SectorSz;
+
+ UInt8 Command = ((!Master) ? 0xE0 : 0xF0);
+
+ drv_pio_std_wait_io(IO);
+ drv_pio_std_select(IO);
+
+ rt_out8(IO + ATA_REG_HDDEVSEL, (Command) | (((Lba) >> 24) & 0x0F));
+
+ rt_out8(IO + ATA_REG_SEC_COUNT0, ((Size + SectorSz) / SectorSz));
+
+ rt_out8(IO + ATA_REG_LBA0, (Lba) & 0xFF);
+ rt_out8(IO + ATA_REG_LBA1, (Lba) >> 8);
+ rt_out8(IO + ATA_REG_LBA2, (Lba) >> 16);
+ rt_out8(IO + ATA_REG_LBA3, (Lba) >> 24);
+
+ rt_out8(IO + ATA_REG_COMMAND, ATA_CMD_WRITE_PIO);
+
+ while (!(rt_in8(IO + ATA_REG_STATUS) & ATA_SR_DRQ));
+
+ for (SizeT IndexOff = 0; IndexOff < Size; IndexOff += 2) {
+ drv_pio_std_wait_io(IO);
+
+ UInt8 low = (UInt8)Buf[IndexOff];
+ UInt8 high = (IndexOff + 1 < Size) ? (UInt8)Buf[IndexOff + 1] : 0;
+ UInt16 packed = (high << 8) | low;
+
+ rt_out16(IO + ATA_REG_DATA, packed);
+ }
+}
+
+/// @brief is ATA detected?
+Boolean drv_pio_std_detected(Void) {
+ return kATADetected;
+}
+
+/***
+ @brief Getter, gets the number of sectors inside the drive.
+ */
+SizeT drv_pio_get_sector_count() {
+ return (kATAIdentifyData[61] << 16) | kATAIdentifyData[60];
+}
+
+/// @brief Get the drive size.
+SizeT drv_pio_get_size() {
+ return (drv_pio_get_sector_count()) * kATASectorSize;
+}
+
+namespace Kernel {
+/// @brief Initialize an PIO device (StorageKit function)
+/// @param is_master is the current PIO master?
+/// @return [io:master] for PIO device.
+BOOL sk_init_ata_device(BOOL is_master, UInt16& io, UInt8& master) {
+ return drv_pio_std_init(ATA_SECONDARY_IO, is_master, io, master);
+}
+
+/// @brief Implementation details namespace.
+namespace Detail {
+ /// @brief Read PIO device.
+ /// @param self device
+ /// @param mnt mounted disk.
+ STATIC Void sk_io_read_pio(IDeviceObject<MountpointInterface*>* self, MountpointInterface* mnt) {
+ ATADeviceInterface* dev = (ATADeviceInterface*) self;
+
+ err_global_get() = kErrorDisk;
+
+ if (!dev) return;
+
+ auto disk = mnt->GetAddressOf(dev->GetIndex());
+
+ if (!disk) return;
+
+ err_global_get() = kErrorSuccess;
+
+ drv_pio_std_read(disk->fPacket.fPacketLba, dev->GetIO(), dev->GetMaster(),
+ (Char*) disk->fPacket.fPacketContent, kATASectorSize,
+ disk->fPacket.fPacketSize);
+ }
+
+ /// @brief Write PIO device.
+ /// @param self device
+ /// @param mnt mounted disk.
+ STATIC Void sk_io_write_pio(IDeviceObject<MountpointInterface*>* self, MountpointInterface* mnt) {
+ ATADeviceInterface* dev = (ATADeviceInterface*) self;
+
+ err_global_get() = kErrorDisk;
+
+ if (!dev) return;
+
+ auto disk = mnt->GetAddressOf(dev->GetIndex());
+
+ if (!disk) return;
+
+ err_global_get() = kErrorSuccess;
+
+ drv_pio_std_write(disk->fPacket.fPacketLba, dev->GetIO(), dev->GetMaster(),
+ (Char*) disk->fPacket.fPacketContent, kATASectorSize,
+ disk->fPacket.fPacketSize);
+ }
+} // namespace Detail
+
+/// @brief Acquires a new PIO device with drv_index in mind.
+/// @param drv_index The drive index to assign.
+/// @return A wrapped device interface if successful, or error code.
+ErrorOr<ATADeviceInterface> sk_acquire_ata_device(Int32 drv_index) {
+ /// here we don't check if we probed ATA, since we'd need to grab IO after that.
+ ATADeviceInterface device(Detail::sk_io_read_pio, Detail::sk_io_write_pio);
+
+ device.SetIndex(drv_index);
+
+ return ErrorOr<ATADeviceInterface>(device);
+}
+} // namespace Kernel
+
+#ifdef __ATA_PIO__
+
+Void drv_std_read(UInt64 Lba, UInt16 IO, UInt8 Master, Char* Buf, SizeT SectorSz, SizeT Size) {
+ drv_pio_std_read(Lba, IO, Master, Buf, SectorSz, Size);
+}
+
+Void drv_std_write(UInt64 Lba, UInt16 IO, UInt8 Master, Char* Buf, SizeT SectorSz, SizeT Size) {
+ drv_pio_std_write(Lba, IO, Master, Buf, SectorSz, Size);
+}
+
+SizeT drv_std_get_size() {
+ return drv_pio_get_size();
+}
+
+SizeT drv_std_get_sector_count() {
+ return drv_pio_get_sector_count();
+}
+
+Boolean drv_std_init(UInt16 Bus, UInt8 Drive, UInt16& OutBus, UInt8& OutMaster) {
+ return drv_pio_std_init(Bus, Drive, OutBus, OutMaster);
+}
+
+#endif
+
+#endif \ No newline at end of file
diff --git a/dev/kernel/HALKit/AMD64/Storage/PIO+Generic.cc b/dev/kernel/HALKit/AMD64/Storage/PIO+Generic.cc
index e57494a7..b22330e4 100644
--- a/dev/kernel/HALKit/AMD64/Storage/PIO+Generic.cc
+++ b/dev/kernel/HALKit/AMD64/Storage/PIO+Generic.cc
@@ -99,6 +99,10 @@ ATAInit_Retry:
(Void)(kout << "Drive Model: " << kATADiskModel << kendl);
+ // Why? the current disk driver writes whole word instead of a single byte (expected btw) so i'm
+ // planning to finish +Next drivers for 0.0.3
+ ke_panic(RUNTIME_CHECK_INVALID, "PIO driver is currently being reworked.");
+
return true;
}
generated by cgit v1.2.3 (git 2.39.1) at 2026-03-13 06:27:30 +0000