Date: Wed, 30 Dec 2020 21:41:55 -0800 From: Neel Chauhan <neel@neelc.org> To: freebsd-hackers@freebsd.org Subject: PCIe Root Port/Bus Not Detected in VMD Message-ID: <9cb4a47a4899b3cccaab2028c1e81177@neelc.org>
next in thread | raw e-mail | index | archive | help
Hi freebsd-hackers@,
My apologies for so many emails from me.
I have the following patch:
diff --git a/sys/dev/vmd/vmd.c b/sys/dev/vmd/vmd.c
index 2cc6f45bed9..7cc0a8a91a7 100644
--- a/sys/dev/vmd/vmd.c
+++ b/sys/dev/vmd/vmd.c
@@ -66,10 +66,12 @@ struct vmd_type {
#define INTEL_VENDOR_ID 0x8086
#define INTEL_DEVICE_ID_VMD 0x201d
#define INTEL_DEVICE_ID_VMD2 0x28c0
+#define INTEL_DEVICE_ID_VMD3 0x9a0b
static struct vmd_type vmd_devs[] = {
{ INTEL_VENDOR_ID, INTEL_DEVICE_ID_VMD, "Intel Volume
Management Device" },
{ INTEL_VENDOR_ID, INTEL_DEVICE_ID_VMD2, "Intel Volume
Management Device" },
+ { INTEL_VENDOR_ID, INTEL_DEVICE_ID_VMD3, "Intel Volume
Management Device" },
{ 0, 0, NULL }
};
@@ -425,6 +427,7 @@ vmd_attach(device_t dev)
return (0);
fail:
+ rman_fini(&sc->vmd_bus.rman);
vmd_free(sc);
return (ENXIO);
}
This patch helps me detect the VMD controller, but I am unable to attach
to it.
Therefore, I am not able to attach any PCIe buses that will be used by a
NVMe SSD.
If this patch worked, I would see these devices (as I do in Linux):
10000:e0:1d.0 PCI bridge [0604]: Intel Corporation Tiger Lake-LP PCI
Express Root Port #9 [8086:a0b0] (rev 20) SI
10000:e0:1d.2 PCI bridge [0604]: Intel Corporation Device [8086:a0b2]
(rev 20)
10000:e1:00.0 Non-Volatile memory controller [0108]: Intel Corporation
Device [8086:0975] (rev 03)
10000:e2:00.0 Non-Volatile memory controller [0108]: Intel Corporation
Device [8086:0975]
And therefore a `nvd*` device.
Could a developer please help me with this?
-Neel
===
https://www.neelc.org/
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?9cb4a47a4899b3cccaab2028c1e81177>