ATA TRIM on non-AHCI motherboards ?

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Hello,

I'd like to know if my system is ATA TRIM compatible :

1°) I've just bought a SATA SSD (Crucial M4) which handles TRIM
2°) I'm running Linux 2.6.33 whch also handles TRIM (ext4 + "discard" option)
3°) My motherboard (ASRock Conroe 1333 DVI/H R2.02, featuring the ICH7
southbridge) doesn't handle AHCI. Yet 48-bit LBA addressing is
supported.

I did some research and I've read that 48-bit LBA addressing should be
enough to get TRIM IF the driver is compatible.

Is it the case ?

Thanks in advance

Thibaut
35'
France

Here is the output of "lspci -nn" on my system

00:00.0 Host bridge [0600]: Intel Corporation 82945G/GZ/P/PL Memory
Controller Hub [8086:2770] (rev 02)
00:02.0 VGA compatible controller [0300]: Intel Corporation 82945G/GZ
Integrated Graphics Controller [8086:2772] (rev 02)
00:1b.0 Audio device [0403]: Intel Corporation N10/ICH 7 Family High
Definition Audio Controller [8086:27d8] (rev 01)
00:1c.0 PCI bridge [0604]: Intel Corporation N10/ICH 7 Family PCI
Express Port 1 [8086:27d0] (rev 01)
00:1c.1 PCI bridge [0604]: Intel Corporation N10/ICH 7 Family PCI
Express Port 2 [8086:27d2] (rev 01)
00:1d.0 USB Controller [0c03]: Intel Corporation N10/ICH 7 Family USB
UHCI Controller #1 [8086:27c8] (rev 01)
00:1d.1 USB Controller [0c03]: Intel Corporation N10/ICH 7 Family USB
UHCI Controller #2 [8086:27c9] (rev 01)
00:1d.2 USB Controller [0c03]: Intel Corporation N10/ICH 7 Family USB
UHCI Controller #3 [8086:27ca] (rev 01)
00:1d.3 USB Controller [0c03]: Intel Corporation N10/ICH 7 Family USB
UHCI Controller #4 [8086:27cb] (rev 01)
00:1d.7 USB Controller [0c03]: Intel Corporation N10/ICH 7 Family USB2
EHCI Controller [8086:27cc] (rev 01)
00:1e.0 PCI bridge [0604]: Intel Corporation 82801 PCI Bridge
[8086:244e] (rev e1)
00:1f.0 ISA bridge [0601]: Intel Corporation 82801GB/GR (ICH7 Family)
LPC Interface Bridge [8086:27b8] (rev 01)
00:1f.1 IDE interface [0101]: Intel Corporation 82801G (ICH7 Family)
IDE Controller [8086:27df] (rev 01)
00:1f.2 IDE interface [0101]: Intel Corporation N10/ICH7 Family SATA
IDE Controller [8086:27c0] (rev 01)
00:1f.3 SMBus [0c05]: Intel Corporation N10/ICH 7 Family SMBus
Controller [8086:27da] (rev 01)
01:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd.
RTL8111/8168B PCI Express Gigabit Ethernet controller [10ec:8168] (rev
01)
03:02.0 FireWire (IEEE 1394) [0c00]: Texas Instruments TSB12LV23
IEEE-1394 Controller [104c:8019]
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