booting MacPro with non-AHCI (Legacy/Compatible/SATA controller) modes

Subject: booting MacPro with non-AHCI (Legacy/Compatible/SATA controller) modes

From: naren pal <email@hidden>

Date: Thu, 5 Nov 2009 12:12:30 +0530

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Hi,

I am planning to purchase MacPro (<add model no>) for development of Serial ATA controller driver/kernel extension to support some specific user application request, may be in the form of some ioctl which is very specific to our user application requirements.

I found the on-board SATA controller in MacPro is configured in AHCI mode (found using “IORegistryExplorere” app inside /Developer/Applications/Utilities folder). I thought of developing KExt with this controller but found there is no support given by Apple to sub-class the AHCI driver and to add ioctl support to this.

Otherwise, I am hopeful the same could be possible if MacPro can be booted in Legacy/Compatible/SATA controller mode (i.e., non-AHCI mode) so that the driver structure could be different. In that case, I need to check if Apple provides support/possibility to sub-class such drivers and add ioctl code support in the form of KExt.

Please let me know if booting in Legacy/Compatible/SATA controller mode (i.e., non-AHCI mode) will be possible in MacPro and any KExt development with such driver stack is possible.

If not than how should I proceed with this Serial-ATA development. I need to send lot of ATA commands to my SATA disk.

Any help will be highly appericiated.

Regards,

Naren

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