Date: Thu, 20 Oct 2022 11:43:23 +0100 From: Andrew Turner <andrew@fubar.geek.nz> To: Souradeep Chakrabarti <schakrabarti@microsoft.com> Cc: Warner Losh <imp@bsdimp.com>, "freebsd-hackers@freebsd.org" <freebsd-hackers@freebsd.org>, Wei Hu <weh@microsoft.com> Subject: Re: [EXTERNAL] allocating IRQ mentioned in _CRS of ACPI Message-ID: <F4CD9D0B-980D-40E5-B17B-A1D87B46EA3C@fubar.geek.nz> In-Reply-To: <PSAP153MB0536D3DC3F8C7E37CC121C2ECC2B9@PSAP153MB0536.APCP153.PROD.OUTLOOK.COM> References: <PSAP153MB053667A618629ACFFDCEDCBFCC249@PSAP153MB0536.APCP153.PROD.OUTLOOK.COM> <PSAP153MB053698CAD8CB5439C99355B4CC249@PSAP153MB0536.APCP153.PROD.OUTLOOK.COM> <PSAP153MB053688DD7E9B60CE5AEB17A6CC289@PSAP153MB0536.APCP153.PROD.OUTLOOK.COM> <CANCZdfotdfuwK1t7efmh%2B_jNxjEJj4UmdrWhTVmUktZC9auzEQ@mail.gmail.com> <PSAP153MB0536D3DC3F8C7E37CC121C2ECC2B9@PSAP153MB0536.APCP153.PROD.OUTLOOK.COM>
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Based on my reading of the ACPI tables, and looking how Linux handles it =
I don=E2=80=99t think the vmbus_res driver should be used. If the vmbus =
driver was to attach to the =E2=80=9CVMBUS" _HID it would be able to =
manage the interrupt directly.
Ideally acpi_syscontainer would become a proper bus, but that would need =
checking that existing drivers that depend on the current behaviour =
still work.
Andrew
> On 19 Oct 2022, at 18:51, Souradeep Chakrabarti =
<schakrabarti@microsoft.com> wrote:
>=20
> Hi Warner,
> =20
> 1) PCI mmio resource in HID "ACPI0004", which is needed by the FreeBSD =
guest for SRIOV devices.
> =20
> Device (\_SB.VMOD) <-- This is currently owned by =
acpi_syscontainer module on FreeBSD
> {
> Name (_HID, "ACPI0004" /* Module Device */) // _HID: Hardware =
ID
> Name (_UID, Zero) // _UID: Unique ID
> Name (_CRS, ResourceTemplate () // _CRS: Current Resource =
Settings
> {
> ...
> }
> CreateDWordField (_CRS, \_SB.VMOD._Y00._MIN, MIN6) // _MIN: =
Minimum Base Address
> CreateDWordField (_CRS, \_SB.VMOD._Y00._MAX, MAX6) // _MAX: =
Maximum Base Address
> CreateDWordField (_CRS, \_SB.VMOD._Y00._LEN, LEN6) // _LEN: =
Length
> CreateQWordField (_CRS, \_SB.VMOD._Y01._MIN, MIN7) // _MIN: =
Minimum Base Address
> CreateQWordField (_CRS, \_SB.VMOD._Y01._MAX, MAX7) // _MAX: =
Maximum Base Address
> CreateQWordField (_CRS, \_SB.VMOD._Y01._LEN, LEN7) // _LEN: =
Length
> Method (_INI, 0, NotSerialized) // _INI: Initialize
> {
> MIN6 =3D MG2B /* \MG2B */
> LEN6 =3D MG2L /* \MG2L */
> Local0 =3D MG2L /* \MG2L */
> MAX6 =3D (MIN6 + Local0--)
> Local1 =3D (HMIB << 0x14)
> Local2 =3D (HMIL << 0x14)
> MIN7 =3D Local1
> LEN7 =3D Local2
> Local0 =3D Local2
> MAX7 =3D (MIN7 + Local0--)
> }
> }
> =20
> 2) Vmbus IRQ resource in HID "VMBus", which is needed to get Hyper-V =
vmbus interrupt to work on guests.
> Device (\_SB.VMOD.VMBS) <--- currently owned by vmbus_res module on =
FreeBSD
> {
> ...
> Name (_HID, "VMBus") // _HID: Hardware ID
> Name (_UID, Zero) // _UID: Unique ID
> ...
> Name (_CRS, ResourceTemplate () // _CRS: Current Resource =
Settings
> {
> Interrupt (ResourceConsumer, Edge, ActiveHigh, Exclusive, =
,, )
> {
> 0x00000012,
> }
> })
> }
> =20
> <image001.png>
> =20
> Today I was able to get both IRQ and MMIO allocation successful using =
below snippet in vmbus:
> =20
> + device_t dev =3D =
devclass_get_device(devclass_find("vmbus_res"), 0);
> + sc->ires =3D bus_alloc_resource_any(dev,
> SYS_RES_IRQ, &sc->vector, RF_ACTIVE | RF_SHAREABLE);
> =20
> =20
> Thanks & Regards,
> Souradeep
> =20
> From: Warner Losh <imp@bsdimp.com>=20
> Sent: Wednesday, October 19, 2022 11:09 PM
> To: Souradeep Chakrabarti <schakrabarti@microsoft.com>
> Cc: freebsd-hackers@freebsd.org; Wei Hu <weh@microsoft.com>
> Subject: [EXTERNAL] Re: allocating IRQ mentioned in _CRS of ACPI
> =20
> Sorry for the late reply... I've been busy with some things for =
work...
> =20
> I think you'll need to get the parent of vmbus to allow a pass through =
allocation. What bus is that
> currently?
> =20
> Warner
> =20
> On Tue, Oct 18, 2022 at 12:33 PM Souradeep Chakrabarti =
<schakrabarti@microsoft.com <mailto:schakrabarti@microsoft.com>> wrote:
> Hi,
> It will be a great help, if someone can help here with some idea.
> As it is blocking the FreeBSD on Hyper-V ARM64.
>=20
> Thanks & Regards,
> Souradeep
>=20
> > -----Original Message-----
> > From: Souradeep Chakrabarti
> > Sent: Friday, October 14, 2022 1:24 PM
> > To: 'Warner Losh' <imp@bsdimp.com <mailto:imp@bsdimp.com>>
> > Cc: freebsd-hackers@freebsd.org =
<mailto:freebsd-hackers@freebsd.org>; Wei Hu <weh@microsoft.com =
<mailto:weh@microsoft.com>>
> > Subject: RE: allocating IRQ mentioned in _CRS of ACPI
> >=20
> > Last mail was having incorrect FreeBSD hacker alias. Replacing that =
with correct
> > one here.
> >=20
> >=20
> > > -----Original Message-----
> > > From: Souradeep Chakrabarti
> > > Sent: Friday, October 14, 2022 1:19 PM
> > > To: Warner Losh <imp@bsdimp.com <mailto:imp@bsdimp.com>>
> > > Cc: hacker@freebsd.org <mailto:hacker@freebsd.org>; Wei Hu =
<weh@microsoft.com <mailto:weh@microsoft.com>>
> > > Subject: allocating IRQ mentioned in _CRS of ACPI
> > >
> > > Hi,
> > > I would like to allocate IRQ to a device, mentioned in the _CRS of
> > > that device in ACPI table.
> > > I have tried with bus_alloc_resource_any(), but it is failing as =
the
> > > parent of that device is not owning the IRQ.
> > >
> > > Current ACPI topo for the device :
> > > ACPI0->SB.VMOD(HID ACPI0004, has SYS_RES_MEM for MMIO in _CRS)-
> > > >VMBUS( it has SYS_RES_IRQ in it's _CRS).
> > >
> > > How can I get here both SYS_RES_IRQ and SYS_RES_MEM allocated to =
VMBUS?
> > >
> > > Thanks & Regards,
> > > Souradeep
--Apple-Mail=_8D832B57-8A2A-4CAC-96CA-1E8A51A498FD
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charset=utf-8
<html><head><meta http-equiv=3D"Content-Type" content=3D"text/html; =
charset=3Dutf-8"></head><body style=3D"word-wrap: break-word; =
-webkit-nbsp-mode: space; line-break: after-white-space;" class=3D"">Based=
on my reading of the ACPI tables, and looking how Linux handles it I =
don=E2=80=99t think the vmbus_res driver should be used. If the vmbus =
driver was to attach to the =E2=80=9CVMBUS" _HID it would be able to =
manage the interrupt directly.<div class=3D""><br class=3D""></div><div =
class=3D"">Ideally acpi_syscontainer would become a proper bus, but that =
would need checking that existing drivers that depend on the current =
behaviour still work.<br class=3D""><div class=3D""><br =
class=3D""></div><div class=3D"">Andrew<br class=3D""><div><br =
class=3D""><blockquote type=3D"cite" class=3D""><div class=3D"">On 19 =
Oct 2022, at 18:51, Souradeep Chakrabarti <<a =
href=3D"mailto:schakrabarti@microsoft.com" =
class=3D"">schakrabarti@microsoft.com</a>> wrote:</div><br =
class=3D"Apple-interchange-newline"><div class=3D""><meta =
charset=3D"UTF-8" class=3D""><div class=3D"WordSection1" style=3D"page: =
WordSection1; caret-color: rgb(0, 0, 0); font-family: Helvetica; =
font-size: 12px; font-style: normal; font-variant-caps: normal; =
font-weight: 400; letter-spacing: normal; text-align: start; =
text-indent: 0px; text-transform: none; white-space: normal; =
word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: =
none;"><div style=3D"margin: 0cm; font-size: 11pt; font-family: Calibri, =
sans-serif;" class=3D""><span class=3D"">Hi Warner,<o:p =
class=3D""></o:p></span></div><div style=3D"margin: 0cm; font-size: =
11pt; font-family: Calibri, sans-serif;" class=3D""><span class=3D""><o:p =
class=3D""> </o:p></span></div><div style=3D"margin: 0cm; =
font-size: 11pt; font-family: Calibri, sans-serif;" class=3D""><span =
lang=3D"EN-US" class=3D"">1) PCI mmio resource in HID "ACPI0004", which =
is needed by the FreeBSD guest for SRIOV devices.<o:p =
class=3D""></o:p></span></div><div style=3D"margin: 0cm; font-size: =
11pt; font-family: Calibri, sans-serif;" class=3D""><span lang=3D"EN-US" =
class=3D""><o:p class=3D""> </o:p></span></div><div style=3D"margin: =
0cm; font-size: 11pt; font-family: Calibri, sans-serif;" class=3D""><span =
lang=3D"EN-US" class=3D""> Device =
(\_SB.VMOD) <-- This is currently owned by =
acpi_syscontainer module on FreeBSD<o:p class=3D""></o:p></span></div><div=
style=3D"margin: 0cm; font-size: 11pt; font-family: Calibri, =
sans-serif;" class=3D""><span lang=3D"EN-US" class=3D""> =
{<o:p class=3D""></o:p></span></div><div style=3D"margin: 0cm; =
font-size: 11pt; font-family: Calibri, sans-serif;" class=3D""><span =
lang=3D"EN-US" class=3D""> =
Name (_HID, "<span style=3D"background-color: yellow;" =
class=3D"">ACPI0004</span>" /* Module Device */) // _HID: Hardware =
ID<o:p class=3D""></o:p></span></div><div style=3D"margin: 0cm; =
font-size: 11pt; font-family: Calibri, sans-serif;" class=3D""><span =
lang=3D"EN-US" class=3D""> =
Name (_UID, Zero) // _UID: Unique ID<o:p =
class=3D""></o:p></span></div><div style=3D"margin: 0cm; font-size: =
11pt; font-family: Calibri, sans-serif;" class=3D""><span lang=3D"EN-US" =
class=3D""> Name (_CRS, =
ResourceTemplate () // _CRS: Current Resource Settings<o:p =
class=3D""></o:p></span></div><div style=3D"margin: 0cm; font-size: =
11pt; font-family: Calibri, sans-serif;" class=3D""><span lang=3D"EN-US" =
class=3D""> {<o:p =
class=3D""></o:p></span></div><div style=3D"margin: 0cm; font-size: =
11pt; font-family: Calibri, sans-serif;" class=3D""><span lang=3D"EN-US" =
class=3D""> &nb=
sp; ...<o:p class=3D""></o:p></span></div><div style=3D"margin: 0cm; =
font-size: 11pt; font-family: Calibri, sans-serif;" class=3D""><span =
lang=3D"EN-US" class=3D""> =
}<o:p class=3D""></o:p></span></div><div style=3D"margin: 0cm; =
font-size: 11pt; font-family: Calibri, sans-serif;" class=3D""><span =
lang=3D"EN-US" class=3D""> =
CreateDWordField (_CRS, \_SB.VMOD._Y00._MIN, MIN6) // _MIN: =
Minimum Base Address<o:p class=3D""></o:p></span></div><div =
style=3D"margin: 0cm; font-size: 11pt; font-family: Calibri, =
sans-serif;" class=3D""><span lang=3D"EN-US" =
class=3D""> CreateDWordField =
(_CRS, \_SB.VMOD._Y00._MAX, MAX6) // _MAX: Maximum Base =
Address<o:p class=3D""></o:p></span></div><div style=3D"margin: 0cm; =
font-size: 11pt; font-family: Calibri, sans-serif;" class=3D""><span =
lang=3D"EN-US" class=3D""> =
CreateDWordField (_CRS, \_SB.VMOD._Y00._LEN, LEN6) // _LEN: =
Length<o:p class=3D""></o:p></span></div><div style=3D"margin: 0cm; =
font-size: 11pt; font-family: Calibri, sans-serif;" class=3D""><span =
lang=3D"EN-US" class=3D""> =
CreateQWordField (_CRS, \_SB.VMOD._Y01._MIN, MIN7) // _MIN: =
Minimum Base Address<o:p class=3D""></o:p></span></div><div =
style=3D"margin: 0cm; font-size: 11pt; font-family: Calibri, =
sans-serif;" class=3D""><span lang=3D"EN-US" =
class=3D""> CreateQWordField =
(_CRS, \_SB.VMOD._Y01._MAX, MAX7) // _MAX: Maximum Base =
Address<o:p class=3D""></o:p></span></div><div style=3D"margin: 0cm; =
font-size: 11pt; font-family: Calibri, sans-serif;" class=3D""><span =
lang=3D"EN-US" class=3D""> =
CreateQWordField (_CRS, \_SB.VMOD._Y01._LEN, LEN7) // _LEN: =
Length<o:p class=3D""></o:p></span></div><div style=3D"margin: 0cm; =
font-size: 11pt; font-family: Calibri, sans-serif;" class=3D""><span =
lang=3D"EN-US" class=3D""> =
Method (_INI, 0, NotSerialized) // _INI: Initialize<o:p =
class=3D""></o:p></span></div><div style=3D"margin: 0cm; font-size: =
11pt; font-family: Calibri, sans-serif;" class=3D""><span lang=3D"EN-US" =
class=3D""> {<o:p =
class=3D""></o:p></span></div><div style=3D"margin: 0cm; font-size: =
11pt; font-family: Calibri, sans-serif;" class=3D""><span lang=3D"EN-US" =
class=3D""> &nb=
sp; MIN6 =3D MG2B /* \MG2B */<o:p class=3D""></o:p></span></div><div =
style=3D"margin: 0cm; font-size: 11pt; font-family: Calibri, =
sans-serif;" class=3D""><span lang=3D"EN-US" =
class=3D""> &nb=
sp; LEN6 =3D MG2L /* \MG2L */<o:p class=3D""></o:p></span></div><div =
style=3D"margin: 0cm; font-size: 11pt; font-family: Calibri, =
sans-serif;" class=3D""><span lang=3D"EN-US" =
class=3D""> &nb=
sp; Local0 =3D MG2L /* \MG2L */<o:p class=3D""></o:p></span></div><div =
style=3D"margin: 0cm; font-size: 11pt; font-family: Calibri, =
sans-serif;" class=3D""><span lang=3D"EN-US" =
class=3D""> &nb=
sp; MAX6 =3D (MIN6 + Local0--)<o:p class=3D""></o:p></span></div><div =
style=3D"margin: 0cm; font-size: 11pt; font-family: Calibri, =
sans-serif;" class=3D""><span lang=3D"EN-US" =
class=3D""> &nb=
sp; Local1 =3D (HMIB << 0x14)<o:p class=3D""></o:p></span></div><div=
style=3D"margin: 0cm; font-size: 11pt; font-family: Calibri, =
sans-serif;" class=3D""><span lang=3D"EN-US" =
class=3D""> &nb=
sp; Local2 =3D (HMIL << 0x14)<o:p class=3D""></o:p></span></div><div=
style=3D"margin: 0cm; font-size: 11pt; font-family: Calibri, =
sans-serif;" class=3D""><span lang=3D"EN-US" =
class=3D""> &nb=
sp; MIN7 =3D Local1<o:p class=3D""></o:p></span></div><div =
style=3D"margin: 0cm; font-size: 11pt; font-family: Calibri, =
sans-serif;" class=3D""><span lang=3D"EN-US" =
class=3D""> &nb=
sp; LEN7 =3D Local2<o:p class=3D""></o:p></span></div><div =
style=3D"margin: 0cm; font-size: 11pt; font-family: Calibri, =
sans-serif;" class=3D""><span lang=3D"EN-US" class=3D""> =
Local0 =3D Local2<o:p =
class=3D""></o:p></span></div><div style=3D"margin: 0cm; font-size: =
11pt; font-family: Calibri, sans-serif;" class=3D""><span lang=3D"EN-US" =
class=3D""> &nb=
sp; MAX7 =3D (MIN7 + Local0--)<o:p class=3D""></o:p></span></div><div =
style=3D"margin: 0cm; font-size: 11pt; font-family: Calibri, =
sans-serif;" class=3D""><span lang=3D"EN-US" =
class=3D""> }<o:p =
class=3D""></o:p></span></div><div style=3D"margin: 0cm; font-size: =
11pt; font-family: Calibri, sans-serif;" class=3D""><span lang=3D"EN-US" =
class=3D""> }<o:p class=3D""></o:p></span></div><div =
style=3D"margin: 0cm; font-size: 11pt; font-family: Calibri, =
sans-serif;" class=3D""><span lang=3D"EN-US" class=3D""><o:p =
class=3D""> </o:p></span></div><div style=3D"margin: 0cm; =
font-size: 11pt; font-family: Calibri, sans-serif;" class=3D""><span =
lang=3D"EN-US" class=3D"">2) Vmbus IRQ resource in HID "VMBus", which is =
needed to get Hyper-V vmbus interrupt to work on guests.<o:p =
class=3D""></o:p></span></div><div style=3D"margin: 0cm; font-size: =
11pt; font-family: Calibri, sans-serif;" class=3D""><span lang=3D"EN-US" =
class=3D"">Device (\_SB.VMOD.VMBS) <--- currently owned =
by vmbus_res module on FreeBSD<o:p class=3D""></o:p></span></div><div =
style=3D"margin: 0cm; font-size: 11pt; font-family: Calibri, =
sans-serif;" class=3D""><span lang=3D"EN-US" class=3D""> =
{<o:p class=3D""></o:p></span></div><div style=3D"margin: 0cm; =
font-size: 11pt; font-family: Calibri, sans-serif;" class=3D""><span =
lang=3D"EN-US" class=3D""> =
...<o:p class=3D""></o:p></span></div><div style=3D"margin: 0cm; =
font-size: 11pt; font-family: Calibri, sans-serif;" class=3D""><span =
lang=3D"EN-US" class=3D""> =
Name (_HID, "<span style=3D"background-color: yellow;" =
class=3D"">VMBus</span>") // _HID: Hardware ID<o:p =
class=3D""></o:p></span></div><div style=3D"margin: 0cm; font-size: =
11pt; font-family: Calibri, sans-serif;" class=3D""><span lang=3D"EN-US" =
class=3D""> Name (_UID, =
Zero) // _UID: Unique ID<o:p class=3D""></o:p></span></div><div =
style=3D"margin: 0cm; font-size: 11pt; font-family: Calibri, =
sans-serif;" class=3D""><span lang=3D"EN-US" =
class=3D""> ...<o:p =
class=3D""></o:p></span></div><div style=3D"margin: 0cm; font-size: =
11pt; font-family: Calibri, sans-serif;" class=3D""><span lang=3D"EN-US" =
class=3D""> Name (_CRS, =
ResourceTemplate () // _CRS: Current Resource Settings<o:p =
class=3D""></o:p></span></div><div style=3D"margin: 0cm; font-size: =
11pt; font-family: Calibri, sans-serif;" class=3D""><span lang=3D"EN-US" =
class=3D""> {<o:p =
class=3D""></o:p></span></div><div style=3D"margin: 0cm; font-size: =
11pt; font-family: Calibri, sans-serif;" class=3D""><span lang=3D"EN-US" =
class=3D""> &nb=
sp; Interrupt (ResourceConsumer, Edge, ActiveHigh, Exclusive, ,, )<o:p =
class=3D""></o:p></span></div><div style=3D"margin: 0cm; font-size: =
11pt; font-family: Calibri, sans-serif;" class=3D""><span lang=3D"EN-US" =
class=3D""> &nb=
sp; {<o:p class=3D""></o:p></span></div><div style=3D"margin: 0cm; =
font-size: 11pt; font-family: Calibri, sans-serif;" class=3D""><span =
lang=3D"EN-US" =
class=3D""> &nb=
sp; 0x00000012,<o:p =
class=3D""></o:p></span></div><div style=3D"margin: 0cm; font-size: =
11pt; font-family: Calibri, sans-serif;" class=3D""><span lang=3D"EN-US" =
class=3D""> &nb=
sp; }<o:p class=3D""></o:p></span></div><div style=3D"margin: 0cm; =
font-size: 11pt; font-family: Calibri, sans-serif;" class=3D""><span =
lang=3D"EN-US" class=3D""> =
})<o:p class=3D""></o:p></span></div><div style=3D"margin: 0cm; =
font-size: 11pt; font-family: Calibri, sans-serif;" class=3D""><span =
lang=3D"EN-US" class=3D""> }<o:p =
class=3D""></o:p></span></div><div style=3D"margin: 0cm; font-size: =
11pt; font-family: Calibri, sans-serif;" class=3D""><span lang=3D"EN-US" =
class=3D""><o:p class=3D""> </o:p></span></div><div style=3D"margin: =
0cm; font-size: 11pt; font-family: Calibri, sans-serif;" class=3D""><span =
class=3D""><span =
id=3D"cid:image001.png@01D8E411.80EECBE0"><image001.png></span></spa=
n><span class=3D""><o:p class=3D""></o:p></span></div><div =
style=3D"margin: 0cm; font-size: 11pt; font-family: Calibri, =
sans-serif;" class=3D""><span class=3D""><o:p =
class=3D""> </o:p></span></div><div style=3D"margin: 0cm; =
font-size: 11pt; font-family: Calibri, sans-serif;" class=3D""><span =
class=3D"">Today I was able to get both IRQ and MMIO allocation =
successful using below snippet in vmbus:<o:p =
class=3D""></o:p></span></div><div style=3D"margin: 0cm; font-size: =
11pt; font-family: Calibri, sans-serif;" class=3D""><span class=3D""><o:p =
class=3D""> </o:p></span></div><div style=3D"margin: 0cm; =
font-size: 11pt; font-family: Calibri, sans-serif;" =
class=3D"">+ device_t dev =3D =
devclass_get_device(devclass_find("vmbus_res"), 0);<o:p =
class=3D""></o:p></div><div style=3D"margin: 0cm; font-size: 11pt; =
font-family: Calibri, sans-serif;" =
class=3D"">+ sc->ires =3D =
bus_alloc_resource_any(dev,<o:p class=3D""></o:p></div><div =
style=3D"margin: 0cm; font-size: 11pt; font-family: Calibri, =
sans-serif;" =
class=3D""> &nb=
sp; SYS_RES_IRQ, &sc->vector, RF_ACTIVE | RF_SHAREABLE);<o:p =
class=3D""></o:p></div><div style=3D"margin: 0cm; font-size: 11pt; =
font-family: Calibri, sans-serif;" class=3D""><span class=3D""><o:p =
class=3D""> </o:p></span></div><div class=3D""><div style=3D"margin: =
0cm; font-size: 11pt; font-family: Calibri, sans-serif;" class=3D""><span =
style=3D"font-size: 12pt;" class=3D""><o:p =
class=3D""> </o:p></span></div></div><div class=3D""><div =
style=3D"margin: 0cm; font-size: 11pt; font-family: Calibri, =
sans-serif;" class=3D""><span style=3D"font-size: 12pt;" class=3D"">Thanks=
& Regards,<o:p class=3D""></o:p></span></div></div><div =
class=3D""><div style=3D"margin: 0cm; font-size: 11pt; font-family: =
Calibri, sans-serif;" class=3D""><span style=3D"font-size: 12pt;" =
class=3D""> Souradeep<o:p class=3D""></o:p></span></div></div><div =
style=3D"margin: 0cm; font-size: 11pt; font-family: Calibri, =
sans-serif;" class=3D""><span class=3D""><o:p =
class=3D""> </o:p></span></div><div style=3D"border-style: none =
none none solid; border-left-width: 1.5pt; border-left-color: blue; =
padding: 0cm 0cm 0cm 4pt;" class=3D""><div class=3D""><div =
style=3D"border-style: solid none none; border-top-width: 1pt; =
border-top-color: rgb(225, 225, 225); padding: 3pt 0cm 0cm;" =
class=3D""><div style=3D"margin: 0cm; font-size: 11pt; font-family: =
Calibri, sans-serif;" class=3D""><b class=3D""><span lang=3D"EN-US" =
class=3D"">From:</span></b><span lang=3D"EN-US" class=3D""><span =
class=3D"Apple-converted-space"> </span>Warner Losh <<a =
href=3D"mailto:imp@bsdimp.com" class=3D"">imp@bsdimp.com</a>><span =
class=3D"Apple-converted-space"> </span><br class=3D""><b =
class=3D"">Sent:</b><span =
class=3D"Apple-converted-space"> </span>Wednesday, October 19, 2022 =
11:09 PM<br class=3D""><b class=3D"">To:</b><span =
class=3D"Apple-converted-space"> </span>Souradeep Chakrabarti =
<<a href=3D"mailto:schakrabarti@microsoft.com" =
class=3D"">schakrabarti@microsoft.com</a>><br class=3D""><b =
class=3D"">Cc:</b><span class=3D"Apple-converted-space"> </span><a =
href=3D"mailto:freebsd-hackers@freebsd.org" =
class=3D"">freebsd-hackers@freebsd.org</a>; Wei Hu <<a =
href=3D"mailto:weh@microsoft.com" class=3D"">weh@microsoft.com</a>><br =
class=3D""><b class=3D"">Subject:</b><span =
class=3D"Apple-converted-space"> </span>[EXTERNAL] Re: allocating =
IRQ mentioned in _CRS of ACPI<o:p =
class=3D""></o:p></span></div></div></div><div style=3D"margin: 0cm; =
font-size: 11pt; font-family: Calibri, sans-serif;" class=3D""><o:p =
class=3D""> </o:p></div><div class=3D""><div class=3D""><div =
style=3D"margin: 0cm; font-size: 11pt; font-family: Calibri, =
sans-serif;" class=3D"">Sorry for the late reply... I've been busy =
with some things for work...<o:p class=3D""></o:p></div></div><div =
class=3D""><div style=3D"margin: 0cm; font-size: 11pt; font-family: =
Calibri, sans-serif;" class=3D""><o:p =
class=3D""> </o:p></div></div><div class=3D""><div style=3D"margin: =
0cm; font-size: 11pt; font-family: Calibri, sans-serif;" class=3D"">I =
think you'll need to get the parent of vmbus to allow a pass through =
allocation. What bus is that<o:p class=3D""></o:p></div></div><div =
class=3D""><div style=3D"margin: 0cm; font-size: 11pt; font-family: =
Calibri, sans-serif;" class=3D"">currently?<o:p =
class=3D""></o:p></div></div><div class=3D""><div style=3D"margin: 0cm; =
font-size: 11pt; font-family: Calibri, sans-serif;" class=3D""><o:p =
class=3D""> </o:p></div></div><div class=3D""><div style=3D"margin: =
0cm; font-size: 11pt; font-family: Calibri, sans-serif;" =
class=3D"">Warner<o:p class=3D""></o:p></div></div><div style=3D"margin: =
0cm; font-size: 11pt; font-family: Calibri, sans-serif;" class=3D""><o:p =
class=3D""> </o:p></div><div class=3D""><div class=3D""><div =
style=3D"margin: 0cm; font-size: 11pt; font-family: Calibri, =
sans-serif;" class=3D"">On Tue, Oct 18, 2022 at 12:33 PM Souradeep =
Chakrabarti <<a href=3D"mailto:schakrabarti@microsoft.com" =
style=3D"color: blue; text-decoration: underline;" =
class=3D"">schakrabarti@microsoft.com</a>> wrote:<o:p =
class=3D""></o:p></div></div><blockquote style=3D"border-style: none =
none none solid; border-left-width: 1pt; border-left-color: rgb(204, =
204, 204); padding: 0cm 0cm 0cm 6pt; margin-left: 4.8pt; margin-right: =
0cm;" class=3D""><div style=3D"margin: 0cm; font-size: 11pt; =
font-family: Calibri, sans-serif;" class=3D"">Hi,<br class=3D"">It will =
be a great help, if someone can help here with some idea.<br class=3D"">As=
it is blocking the FreeBSD on Hyper-V ARM64.<br class=3D""><br =
class=3D"">Thanks & Regards,<br class=3D"">Souradeep<br class=3D""><br=
class=3D"">> -----Original Message-----<br class=3D"">> From: =
Souradeep Chakrabarti<br class=3D"">> Sent: Friday, October 14, 2022 =
1:24 PM<br class=3D"">> To: 'Warner Losh' <<a =
href=3D"mailto:imp@bsdimp.com" target=3D"_blank" style=3D"color: blue; =
text-decoration: underline;" class=3D"">imp@bsdimp.com</a>><br =
class=3D"">> Cc:<span class=3D"Apple-converted-space"> </span><a =
href=3D"mailto:freebsd-hackers@freebsd.org" target=3D"_blank" =
style=3D"color: blue; text-decoration: underline;" =
class=3D"">freebsd-hackers@freebsd.org</a>; Wei Hu <<a =
href=3D"mailto:weh@microsoft.com" target=3D"_blank" style=3D"color: =
blue; text-decoration: underline;" class=3D"">weh@microsoft.com</a>><br=
class=3D"">> Subject: RE: allocating IRQ mentioned in _CRS of =
ACPI<br class=3D"">><span =
class=3D"Apple-converted-space"> </span><br class=3D"">> Last =
mail was having incorrect FreeBSD hacker alias. Replacing that with =
correct<br class=3D"">> one here.<br class=3D"">><span =
class=3D"Apple-converted-space"> </span><br class=3D"">><span =
class=3D"Apple-converted-space"> </span><br class=3D"">> > =
-----Original Message-----<br class=3D"">> > From: Souradeep =
Chakrabarti<br class=3D"">> > Sent: Friday, October 14, 2022 1:19 =
PM<br class=3D"">> > To: Warner Losh <<a =
href=3D"mailto:imp@bsdimp.com" target=3D"_blank" style=3D"color: blue; =
text-decoration: underline;" class=3D"">imp@bsdimp.com</a>><br =
class=3D"">> > Cc:<span =
class=3D"Apple-converted-space"> </span><a =
href=3D"mailto:hacker@freebsd.org" target=3D"_blank" style=3D"color: =
blue; text-decoration: underline;" class=3D"">hacker@freebsd.org</a>; =
Wei Hu <<a href=3D"mailto:weh@microsoft.com" target=3D"_blank" =
style=3D"color: blue; text-decoration: underline;" =
class=3D"">weh@microsoft.com</a>><br class=3D"">> > Subject: =
allocating IRQ mentioned in _CRS of ACPI<br class=3D"">> ><br =
class=3D"">> > Hi,<br class=3D"">> > I would like to =
allocate IRQ to a device, mentioned in the _CRS of<br class=3D"">> =
> that device in ACPI table.<br class=3D"">> > I have tried =
with bus_alloc_resource_any(), but it is failing as the<br class=3D"">>=
> parent of that device is not owning the IRQ.<br class=3D"">> =
><br class=3D"">> > Current ACPI topo for the device :<br =
class=3D"">> > ACPI0->SB.VMOD(HID ACPI0004, has SYS_RES_MEM for =
MMIO in _CRS)-<br class=3D"">> > >VMBUS( it has SYS_RES_IRQ in =
it's _CRS).<br class=3D"">> ><br class=3D"">> > How can I =
get here both SYS_RES_IRQ and SYS_RES_MEM allocated to VMBUS?<br =
class=3D"">> ><br class=3D"">> > Thanks & Regards,<br =
class=3D"">> > =
Souradeep</div></blockquote></div></div></div></div></div></blockquote></d=
iv><br class=3D""></div></div></body></html>=
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