Messages in this thread | | | From | Bjørn Mork <> | Subject | Re: [Intel][RNG] PCI IDs commented out for 82801I (ICH9 Mobile and non-mobile)? | Date | Wed, 20 Mar 2013 22:03:46 +0100 |
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Shawn Starr <shawn.starr@rogers.com> writes:
> Hello folks, > > I was looking at why I can't load the Intel RNG driver (or why it doesn't load automatically) and > it just so happens I have both the mobile and non-mobile ICH9 chipset. Looking at the driver I noticed: > > /* BAM, CAM, DBM, FBM, GxM > { PCI_DEVICE(0x8086, 0x2448) }, */ > > /* BA, CA, DB, Ex, 6300, Fx, 631x/632x, Gx > { PCI_DEVICE(0x8086, 0x244e) }, */ > > IDs from both machines: > > 00:1e.0 PCI bridge [0604]: Intel Corporation 82801 Mobile PCI Bridge [8086:2448] (rev 93) > 00:1e.0 PCI bridge [0604]: Intel Corporation 82801 PCI Bridge [8086:244e] (rev 92) > > I saw a thread from 2006 explaining the 50% chance there's no RNG (but these days all modern chipsets should have an RNG) and I know > this chipset I have does have an RNG so I'd like to use the HW random generator vs software. > > Do we need to revisit this? Even if I try to force it to load it still fails: > > # modprobe intel_rng no_fwh_detect=-1 or =1 > modprobe: ERROR: could not insert 'intel_rng': No such device
The module verifies that you have one of the PCI devices in that table, so you need to modify it to get the driver to load:
static int __init mod_init(void) { int err = -ENODEV; int i; struct pci_dev *dev = NULL; void __iomem *mem = mem; u8 hw_status; struct intel_rng_hw *intel_rng_hw;
for (i = 0; !dev && pci_tbl[i].vendor; ++i) dev = pci_get_device(pci_tbl[i].vendor, pci_tbl[i].device, NULL);
if (!dev) goto out; /* Device not found. */
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