diff options
| author | erictian <erictian@6f19259b-4bc3-4df7-8a09-765794883524> | 2013-01-04 06:03:52 +0000 |
|---|---|---|
| committer | erictian <erictian@6f19259b-4bc3-4df7-8a09-765794883524> | 2013-01-04 06:03:52 +0000 |
| commit | 9690325d1e8b1602dac5091a1bab8e1076954900 (patch) | |
| tree | c24ce1f7ad00c3f95a2d279ba5163626bd3e9c6c /MdeModulePkg | |
| parent | e8a50d1b4469fab67323dfa792bca5fc385b179f (diff) | |
| download | edk2-platforms-9690325d1e8b1602dac5091a1bab8e1076954900.tar.xz | |
MdeModulePkg/AtaBus&ScsiBus: Dynamically calculate how long shall we wait for the finish of a read/write operation according to the actual transfer length
Signed-off-by: Feng Tian <feng.tian@intel.com>
Reviewed-by: Elvin Li <elvin.li@intel.com>
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@14028 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'MdeModulePkg')
| -rw-r--r-- | MdeModulePkg/Bus/Ata/AtaBusDxe/AtaPassThruExecute.c | 31 | ||||
| -rw-r--r-- | MdeModulePkg/Bus/Scsi/ScsiDiskDxe/ScsiDisk.c | 62 |
2 files changed, 90 insertions, 3 deletions
diff --git a/MdeModulePkg/Bus/Ata/AtaBusDxe/AtaPassThruExecute.c b/MdeModulePkg/Bus/Ata/AtaBusDxe/AtaPassThruExecute.c index d44359cfcf..2c79f46ed9 100644 --- a/MdeModulePkg/Bus/Ata/AtaBusDxe/AtaPassThruExecute.c +++ b/MdeModulePkg/Bus/Ata/AtaBusDxe/AtaPassThruExecute.c @@ -524,7 +524,36 @@ TransferAtaDevice ( Packet->Protocol = mAtaPassThruCmdProtocols[AtaDevice->UdmaValid][IsWrite];
Packet->Length = EFI_ATA_PASS_THRU_LENGTH_SECTOR_COUNT;
- Packet->Timeout = ATA_TIMEOUT;
+ //
+ // |------------------------|-----------------|------------------------|-----------------|
+ // | ATA PIO Transfer Mode | Transfer Rate | ATA DMA Transfer Mode | Transfer Rate |
+ // |------------------------|-----------------|------------------------|-----------------|
+ // | PIO Mode 0 | 3.3Mbytes/sec | Single-word DMA Mode 0 | 2.1Mbytes/sec |
+ // |------------------------|-----------------|------------------------|-----------------|
+ // | PIO Mode 1 | 5.2Mbytes/sec | Single-word DMA Mode 1 | 4.2Mbytes/sec |
+ // |------------------------|-----------------|------------------------|-----------------|
+ // | PIO Mode 2 | 8.3Mbytes/sec | Single-word DMA Mode 2 | 8.4Mbytes/sec |
+ // |------------------------|-----------------|------------------------|-----------------|
+ // | PIO Mode 3 | 11.1Mbytes/sec | Multi-word DMA Mode 0 | 4.2Mbytes/sec |
+ // |------------------------|-----------------|------------------------|-----------------|
+ // | PIO Mode 4 | 16.6Mbytes/sec | Multi-word DMA Mode 1 | 13.3Mbytes/sec |
+ // |------------------------|-----------------|------------------------|-----------------|
+ //
+ // As AtaBus is used to manage ATA devices, we have to use the lowest transfer rate to
+ // calculate the possible maximum timeout value for each read/write operation.
+ //
+ if (AtaDevice->UdmaValid) {
+ //
+ // Calculate the maximum timeout value for DMA read/write operation.
+ //
+ Packet->Timeout = EFI_TIMER_PERIOD_SECONDS ((TransferLength * AtaDevice->BlockMedia.BlockSize) / 2100000 + 1);
+ } else {
+ //
+ // Calculate the maximum timeout value for PIO read/write operation
+ //
+ Packet->Timeout = EFI_TIMER_PERIOD_SECONDS ((TransferLength * AtaDevice->BlockMedia.BlockSize) / 3300000 + 1);
+ }
+
return AtaDevicePassThru (AtaDevice, TaskPacket, Event);
}
diff --git a/MdeModulePkg/Bus/Scsi/ScsiDiskDxe/ScsiDisk.c b/MdeModulePkg/Bus/Scsi/ScsiDiskDxe/ScsiDisk.c index 324964a81c..c6d96caeb8 100644 --- a/MdeModulePkg/Bus/Scsi/ScsiDiskDxe/ScsiDisk.c +++ b/MdeModulePkg/Bus/Scsi/ScsiDiskDxe/ScsiDisk.c @@ -1815,7 +1815,36 @@ ScsiDiskReadSectors ( }
ByteCount = SectorCount * BlockSize;
- Timeout = EFI_TIMER_PERIOD_SECONDS (2);
+ //
+ // |------------------------|-----------------|------------------|-----------------|
+ // | ATA Transfer Mode | Transfer Rate | SCSI Interface | Transfer Rate |
+ // |------------------------|-----------------|------------------|-----------------|
+ // | PIO Mode 0 | 3.3Mbytes/sec | SCSI-1 | 5Mbytes/sec |
+ // |------------------------|-----------------|------------------|-----------------|
+ // | PIO Mode 1 | 5.2Mbytes/sec | Fast SCSI | 10Mbytes/sec |
+ // |------------------------|-----------------|------------------|-----------------|
+ // | PIO Mode 2 | 8.3Mbytes/sec | Fast-Wide SCSI | 20Mbytes/sec |
+ // |------------------------|-----------------|------------------|-----------------|
+ // | PIO Mode 3 | 11.1Mbytes/sec | Ultra SCSI | 20Mbytes/sec |
+ // |------------------------|-----------------|------------------|-----------------|
+ // | PIO Mode 4 | 16.6Mbytes/sec | Ultra Wide SCSI | 40Mbytes/sec |
+ // |------------------------|-----------------|------------------|-----------------|
+ // | Single-word DMA Mode 0 | 2.1Mbytes/sec | Ultra2 SCSI | 40Mbytes/sec |
+ // |------------------------|-----------------|------------------|-----------------|
+ // | Single-word DMA Mode 1 | 4.2Mbytes/sec | Ultra2 Wide SCSI | 80Mbytes/sec |
+ // |------------------------|-----------------|------------------|-----------------|
+ // | Single-word DMA Mode 2 | 8.4Mbytes/sec | Ultra3 SCSI | 160Mbytes/sec |
+ // |------------------------|-----------------|------------------|-----------------|
+ // | Multi-word DMA Mode 0 | 4.2Mbytes/sec | Ultra-320 SCSI | 320Mbytes/sec |
+ // |------------------------|-----------------|------------------|-----------------|
+ // | Multi-word DMA Mode 1 | 13.3Mbytes/sec | Ultra-640 SCSI | 640Mbytes/sec |
+ // |------------------------|-----------------|------------------|-----------------|
+ //
+ // As ScsiDisk and ScsiBus driver are used to manage SCSI or ATAPI devices, we have to use
+ // the lowest transfer rate to calculate the possible maximum timeout value for each operation.
+ // From the above table, we could know 2.1Mbytes per second is lowest one.
+ //
+ Timeout = EFI_TIMER_PERIOD_SECONDS (ByteCount / 2100000 + 1);
MaxRetry = 2;
for (Index = 0; Index < MaxRetry; Index++) {
@@ -1937,7 +1966,36 @@ ScsiDiskWriteSectors ( }
ByteCount = SectorCount * BlockSize;
- Timeout = EFI_TIMER_PERIOD_SECONDS (2);
+ //
+ // |------------------------|-----------------|------------------|-----------------|
+ // | ATA Transfer Mode | Transfer Rate | SCSI Interface | Transfer Rate |
+ // |------------------------|-----------------|------------------|-----------------|
+ // | PIO Mode 0 | 3.3Mbytes/sec | SCSI-1 | 5Mbytes/sec |
+ // |------------------------|-----------------|------------------|-----------------|
+ // | PIO Mode 1 | 5.2Mbytes/sec | Fast SCSI | 10Mbytes/sec |
+ // |------------------------|-----------------|------------------|-----------------|
+ // | PIO Mode 2 | 8.3Mbytes/sec | Fast-Wide SCSI | 20Mbytes/sec |
+ // |------------------------|-----------------|------------------|-----------------|
+ // | PIO Mode 3 | 11.1Mbytes/sec | Ultra SCSI | 20Mbytes/sec |
+ // |------------------------|-----------------|------------------|-----------------|
+ // | PIO Mode 4 | 16.6Mbytes/sec | Ultra Wide SCSI | 40Mbytes/sec |
+ // |------------------------|-----------------|------------------|-----------------|
+ // | Single-word DMA Mode 0 | 2.1Mbytes/sec | Ultra2 SCSI | 40Mbytes/sec |
+ // |------------------------|-----------------|------------------|-----------------|
+ // | Single-word DMA Mode 1 | 4.2Mbytes/sec | Ultra2 Wide SCSI | 80Mbytes/sec |
+ // |------------------------|-----------------|------------------|-----------------|
+ // | Single-word DMA Mode 2 | 8.4Mbytes/sec | Ultra3 SCSI | 160Mbytes/sec |
+ // |------------------------|-----------------|------------------|-----------------|
+ // | Multi-word DMA Mode 0 | 4.2Mbytes/sec | Ultra-320 SCSI | 320Mbytes/sec |
+ // |------------------------|-----------------|------------------|-----------------|
+ // | Multi-word DMA Mode 1 | 13.3Mbytes/sec | Ultra-640 SCSI | 640Mbytes/sec |
+ // |------------------------|-----------------|------------------|-----------------|
+ //
+ // As ScsiDisk and ScsiBus driver are used to manage SCSI or ATAPI devices, we have to use
+ // the lowest transfer rate to calculate the possible maximum timeout value for each operation.
+ // From the above table, we could know 2.1Mbytes per second is lowest one.
+ //
+ Timeout = EFI_TIMER_PERIOD_SECONDS (ByteCount / 2100000 + 1);
MaxRetry = 2;
for (Index = 0; Index < MaxRetry; Index++) {
if (!ScsiDiskDevice->Cdb16Byte) {
|