RE: Why does BIOS assign memory to 16 byte BAR

> > We see that similar test is passing in x86 machine, where function one > > requesting 1GB BAR's is failing, but function two requesting BAR's > > with 16byte is getting assigned BAR's. > > > > To my knowledge on x86 BIOS assigns resources, or will kernel assign > > reosurces on x86 ? If

RE: Why does BIOS assign memory to 16 byte BAR

> > We see that similar test is passing in x86 machine, where function one > > requesting 1GB BAR's is failing, but function two requesting BAR's > > with 16byte is getting assigned BAR's. > > > > To my knowledge on x86 BIOS assigns resources, or will kernel assign > > reosurces on x86 ? If

Re: Why does BIOS assign memory to 16 byte BAR

On Wed, Jul 27, 2016 at 06:33:29AM +, Bharat Kumar Gogada wrote: > > Your system host bridge: has resource > > pci_bus :00: root bus resource [mem 0xe010-0xefff] pci_bus > > :00: root bus resource [mem 0x6-0x7 pref] then one pci > > bridge: > > pci :00:00.0

Re: Why does BIOS assign memory to 16 byte BAR

On Wed, Jul 27, 2016 at 06:33:29AM +, Bharat Kumar Gogada wrote: > > Your system host bridge: has resource > > pci_bus :00: root bus resource [mem 0xe010-0xefff] pci_bus > > :00: root bus resource [mem 0x6-0x7 pref] then one pci > > bridge: > > pci :00:00.0

RE: Why does BIOS assign memory to 16 byte BAR

> Your system host bridge: has resource > pci_bus :00: root bus resource [mem 0xe010-0xefff] pci_bus > :00: root bus resource [mem 0x6-0x7 pref] then one pci > bridge: > pci :00:00.0 > then :01:00.0 have four bars: > pci :01:00.0: BAR 0: [mem size

RE: Why does BIOS assign memory to 16 byte BAR

> Your system host bridge: has resource > pci_bus :00: root bus resource [mem 0xe010-0xefff] pci_bus > :00: root bus resource [mem 0x6-0x7 pref] then one pci > bridge: > pci :00:00.0 > then :01:00.0 have four bars: > pci :01:00.0: BAR 0: [mem size

Re: Why does BIOS assign memory to 16 byte BAR

On Tue, Jul 26, 2016 at 8:43 AM, Bharat Kumar Gogada wrote: >> > > We have only one End point connected to our root port. >> > > >> > > Here is the log: >> > > [2.319289] nwl-pcie fd0e.pcie: Link is UP >> > > [2.319332] PCI host bridge

Re: Why does BIOS assign memory to 16 byte BAR

On Tue, Jul 26, 2016 at 8:43 AM, Bharat Kumar Gogada wrote: >> > > We have only one End point connected to our root port. >> > > >> > > Here is the log: >> > > [2.319289] nwl-pcie fd0e.pcie: Link is UP >> > > [2.319332] PCI host bridge /amba/pcie@fd0e ranges: >> > > [2.319349]

RE: Why does BIOS assign memory to 16 byte BAR

Adding yinghai lu. > > > > Subject: Re: Why does BIOS assign memory to 16 byte BAR > > > > > > > > On Fri, Jul 22, 2016 at 10:15:46AM -0500, Bjorn Helgaas wrote: > > > > > Hi Bharat, > > > > > > > > > > On

RE: Why does BIOS assign memory to 16 byte BAR

Adding yinghai lu. > > > > Subject: Re: Why does BIOS assign memory to 16 byte BAR > > > > > > > > On Fri, Jul 22, 2016 at 10:15:46AM -0500, Bjorn Helgaas wrote: > > > > > Hi Bharat, > > > > > > > > > > On

RE: Why does BIOS assign memory to 16 byte BAR

> Subject: RE: Why does BIOS assign memory to 16 byte BAR > > > Subject: RE: Why does BIOS assign memory to 16 byte BAR > > > > > Subject: Re: Why does BIOS assign memory to 16 byte BAR > > > > > > On Fri, Jul 22, 2016 at 10:15:46AM

RE: Why does BIOS assign memory to 16 byte BAR

> Subject: RE: Why does BIOS assign memory to 16 byte BAR > > > Subject: RE: Why does BIOS assign memory to 16 byte BAR > > > > > Subject: Re: Why does BIOS assign memory to 16 byte BAR > > > > > > On Fri, Jul 22, 2016 at 10:15:46AM

RE: Why does BIOS assign memory to 16 byte BAR

> Subject: RE: Why does BIOS assign memory to 16 byte BAR > > > Subject: Re: Why does BIOS assign memory to 16 byte BAR > > > > On Fri, Jul 22, 2016 at 10:15:46AM -0500, Bjorn Helgaas wrote: > > > Hi Bharat, > > > > > > On Fri, Jul 22,

RE: Why does BIOS assign memory to 16 byte BAR

> Subject: RE: Why does BIOS assign memory to 16 byte BAR > > > Subject: Re: Why does BIOS assign memory to 16 byte BAR > > > > On Fri, Jul 22, 2016 at 10:15:46AM -0500, Bjorn Helgaas wrote: > > > Hi Bharat, > > > > > > On Fri, Jul 22,

RE: Why does BIOS assign memory to 16 byte BAR

> Subject: Re: Why does BIOS assign memory to 16 byte BAR > > On Fri, Jul 22, 2016 at 10:15:46AM -0500, Bjorn Helgaas wrote: > > Hi Bharat, > > > > On Fri, Jul 22, 2016 at 09:24:22AM +, Bharat Kumar Gogada wrote: > > > Hi, > > > > > > I'm

RE: Why does BIOS assign memory to 16 byte BAR

> Subject: Re: Why does BIOS assign memory to 16 byte BAR > > On Fri, Jul 22, 2016 at 10:15:46AM -0500, Bjorn Helgaas wrote: > > Hi Bharat, > > > > On Fri, Jul 22, 2016 at 09:24:22AM +, Bharat Kumar Gogada wrote: > > > Hi, > > > > > > I'm

Re: Why does BIOS assign memory to 16 byte BAR

On Fri, Jul 22, 2016 at 10:15:46AM -0500, Bjorn Helgaas wrote: > Hi Bharat, > > On Fri, Jul 22, 2016 at 09:24:22AM +, Bharat Kumar Gogada wrote: > > Hi, > > > > I'm observing that on x86 BIOS successfully assigns memory if an End point > > requests > > BAR of size 16byte. > > > > But as

Re: Why does BIOS assign memory to 16 byte BAR

On Fri, Jul 22, 2016 at 10:15:46AM -0500, Bjorn Helgaas wrote: > Hi Bharat, > > On Fri, Jul 22, 2016 at 09:24:22AM +, Bharat Kumar Gogada wrote: > > Hi, > > > > I'm observing that on x86 BIOS successfully assigns memory if an End point > > requests > > BAR of size 16byte. > > > > But as

Re: Why does BIOS assign memory to 16 byte BAR

Hi Bharat, On Fri, Jul 22, 2016 at 09:24:22AM +, Bharat Kumar Gogada wrote: > Hi, > > I'm observing that on x86 BIOS successfully assigns memory if an End point > requests > BAR of size 16byte. > > But as per Spec: > The minimum memory address range requested by a BAR is 128 bytes. Can

Re: Why does BIOS assign memory to 16 byte BAR

Hi Bharat, On Fri, Jul 22, 2016 at 09:24:22AM +, Bharat Kumar Gogada wrote: > Hi, > > I'm observing that on x86 BIOS successfully assigns memory if an End point > requests > BAR of size 16byte. > > But as per Spec: > The minimum memory address range requested by a BAR is 128 bytes. Can

Why does BIOS assign memory to 16 byte BAR

Hi, I'm observing that on x86 BIOS successfully assigns memory if an End point requests BAR of size 16byte. But as per Spec: The minimum memory address range requested by a BAR is 128 bytes. Why BIOS is successfully allocating region to 16 byte BAR requests? Please let me know if my

Why does BIOS assign memory to 16 byte BAR

Hi, I'm observing that on x86 BIOS successfully assigns memory if an End point requests BAR of size 16byte. But as per Spec: The minimum memory address range requested by a BAR is 128 bytes. Why BIOS is successfully allocating region to 16 byte BAR requests? Please let me know if my