Opened 14 years ago
Closed 14 years ago
#16 closed enhancement (fixed)
add support for FreeBSD 'ada' disks
| Reported by: | agapon | Owned by: | Alex Samorukov |
|---|---|---|---|
| Priority: | minor | Milestone: | |
| Component: | all | Version: | |
| Keywords: | FreeBSD | Cc: |
Description
Latest FreeBSD has new ahci(4) driver for AHCI SATA controllers.
SATA disks on these controllers are represented as 'ada' disks.
These are "normal" SATA disks that support usual ATA/SATA commands.
The difference from traditional 'ad' disks is that 'ada' disks do not support ata(4) ioctls, instead commands can be sent using cam(3).
Proposed patch adds initial support for such disks.
To achieve this freebsd_ata_device is subclassed to reuse the code for building ATA commands. Then cam(3) transport is used to send commands to disks (this is somewhat similar to scsi disks code).
Currently auto-discovery of ada disks is not implemented.
Attachments (1)
Change History (4)
Changed 14 years ago by
comment:1 Changed 14 years ago by
| Keywords: | FreeBSD added |
|---|---|
| Owner: | changed from somebody to Alex Samorukov |
| Status: | new → accepted |
comment:2 Changed 14 years ago by
Ill test your patch soon and if it will work fine ill apply it. Do you know any way to get device type without name guess? Something like protocol field in cam? I want to avoid name based guessing also because there are passX devices.
comment:3 Changed 14 years ago by
| Resolution: | → fixed |
|---|---|
| Status: | accepted → closed |
I have no ada devices around to test, so committing your patch as is. Also i changed SCSI code to use con->camdev instead of cam_close/cam_open on every request. If you know how to detect such devices automatically please, do the patch.
initial diff