Serial ATA (SATA) is a forward-backward compatible family of advanced computer bus interfaces for mass storage devices with hot-swapping capability and transfer speeds up to 600 MiB/s.
Questions tagged [sata]
55 questions
2
votes
2 answers
How to differ between external HDD and internal ones?
I want to know whether device is connected via USB (meaning it is a removable hard drive) or SATA (meaning it is an internal hard drive).
That is how I get a list of devices
SP_DEVINFO_DATA volumeData;
volumeData.cbSize = sizeof…
Ganya
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2
votes
1 answer
Configuring a 7-Series GTXE2 transceiver for Serial-ATA (Gen1/2/3)
Hello this will be an experts questions :) You should be familiar with the following topics
Xilinx Multi-Gigabit-Transceivers (MGTs), especially the 7-Series GTX/GTH transceivers (GTXE2_CHANNEL)
Serial-ATA Gen1, Gen2 and Gen3, especially…
Paebbels
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2
votes
1 answer
AHCI specification
I have a question regarding the AHCI spec:
Is the variable pDmaXferCnt in the port used when the transfer is a DMA write or read?
The description in the spec seems to indicate that it isn't, but the PRDs are used instead.
But how does the HBA know…
beandigital
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- 6
2
votes
2 answers
CRC calculation for Serial ATA (SATA)
After reading a lot I came to know that there is no SINGLE method of calculating CRC.
I need method/algorithm/VHDL code for calculating CRC specifically for Serial ATA (SATA)
humptydumpty
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2
votes
1 answer
Writing a large file prevents large block DMA allocation
I'm working with a board with an ARM based processor running linux (3.0.35). Board has 1GB RAM and is connected to a fast SSD HD, and to a 5MP camera.
My goal is capturing high resolution images and write those directly to disk.
All goes well until…
oferlivny
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1
vote
0 answers
how to determine what SATA ports are connected on motherboard using command prompt?
my PC motherboard has 2 SATA connectors.
I'm far from office and PCs but I'd need to know, before to buy a new disk for a PC, what of those SATA ports are busy.
I thought to WMIC commands or powershell but I'm struggling finding a command to do…
Ale MaDaMa
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- 4
1
vote
2 answers
How to check for a drive's existence in Debian Linux
I have a Debian Linux server with two eSATA drives attached to it (NTFS, bleh). They are currently mounted fine and have proper fstab entries setup (using UUID, not /dev locations).
I've come to the conclusion that I need to add 'noauto' mount…
Thomas Hunter II
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1
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1 answer
Linux scsi ata cmd write or read sometimes work and sometimes didn't work when transfer length is over 1345
My code is as follows:
unsigned char cmd[16];
cmd[0] = WRITE_16;
//lba is start address
cmd[2] = (lba >> 54) & 0xFF;
cmd[3] = (lba >> 48) & 0xFF;
cmd[4] = (lba >> 40) & 0xFF;
cmd[5] = (lba >> 32) & 0xFF;
cmd[6] = (lba >> 24) & 0xFF;
cmd[7] = (lba >>…
Easyhyum
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1
vote
1 answer
ATA PASS THROUGH DIRECT on SAS BUS in Windows XP
I want to send a "ATA Pass through Direct" command to a drive that is on the SAS(SATA attached SCSI) bus. The drive is SATA drive, in Windows XP(x86) envirnoment. I hoped there was a STP(SATA Tunneled Protocol) layer that would translate the ATA…
Firefox
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1
vote
0 answers
Cannot write to SATA disks on AHCI controller in kernel mode program
I'm writing an experimental kernel-mode program to test some things. I want to do IO to and from a SATA disk attached to an AHCI controller. I have a C driver that previously worked on another similar project that ran on another PC I no longer have.…
Daniel Seagraves
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1
vote
3 answers
How to Read particular sector of a disk using ATA command?
I want to read a particular sector(MBR Sector) of a disk using ATA commands in vc++. I am new to VC++ so i am facing a problem when sending command to disk using DeviceIoControl. I am providing a code that i am using to read out a sector using…
Sam
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1
vote
1 answer
How many physical channels SATA controller has?
Imagine a system with one SATA controller. If controller operates in IDE mode it will show up in device manager like this:
Windows XP:
IDE controller's name
Primary IDE Channel
Secondary IDE Channel
Windows >= Vista:
IDE controller's name
ATA…
igntec
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1
vote
1 answer
Linux AHCI PRD allocation
I am a hardware developer who is creating a AHCI interface for an embedded system. I would like to know where the PRD DMA data is created and allocated to the PRDs. As SATA uses DWORDS I am assuming that the data will be aligned to multiples of 4…
beandigital
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1
vote
2 answers
obtaining WWN of SATA disks
recently I have been trying all sorts of things with harddrives. Now I am stuck...
what I want to get is the serial,model,revision and WWN of harddrives.
for scsi all of the above is obtainable by a scsi inquiry. for SATA drives I use…
user2882307
1
vote
1 answer
The memory model when bios transfers control to AHCI expansion ROM?
As I knew the AHCI expansion ROM uses IDP(Index/Data pair) to access the AHCI registers(global and Port registers).
The ahci spec v1.3 says:
The IDP mechanism allows host software to access all of the MMIO
registers using indirect I/O…
liaoo
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