NVMe support on RPi CM4 board

[Simon Glass]

Hi Luis,


L
On Tue, Sep 5, 2023, 12:00 Luis Alfredo da Silva <luis.adasilvaf at gmail.com>
wrote:

> Hi Simon, it took me some time to come back to this issue, but I was able
> to enable the debug messages on drivers/nvme/nvme.c.
>
> This is what I got when running the nvme scan command
>
> U-Boot> pci
> BusDevFun  VendorId   DeviceId   Device Class       Sub-Class
> _____________________________________________________________
> 00.00.00   0x14e4     0x2711     Bridge device           0x04
> 01.00.00   0x1c5c     0x174a     Mass storage controller 0x08
> U-Boot> nvme info
> U-Boot> nvme scan
> Cannot set queue count (err=-110)
> Unable to setup I/O queues(err=-110)
> Failed to probe 'nvme#0': err=-110
> U-Boot>
>
> I'm reporting as soon as I got the messages, but I'll continue
> investigating.
>

Can you check if the device has PCI bus master enabled?

Regards,
Simon


> Regards,
> Luis
>
>
> El mié, 9 ago 2023 a las 20:15, Simon Glass (<sjg at google.com>) escribió:
>
>> Hi Luis,
>>
>> On Wed, 9 Aug 2023 at 10:43, Luis Alfredo da Silva
>> <luis.adasilvaf at gmail.com> wrote:
>> >
>> > Hi Simon, I enabled the next four variables
>> >
>> > CONFIG_NVME_PCI=y
>> > CONFIG_NVME=y
>> > CONFIG_CMD_NVME=y
>> > CONFIG_PCI=y
>> >
>> > how different is CONFIG_NVME_PCI from NVME_PCI, I took the latter value
>> from several configs files in u-boot repo and from [1]
>>
>> I just left off the CONFIG as they all have that. This looks right to
>> me. Assuming that the NVMe controller appears in 'dm tree' perhaps you
>> can enable debugging in the driver and see why it is not working?
>>
>> Regards,
>> Simon
>>
>>
>> >
>> >
>> > [1]
>> https://github.com/u-boot/u-boot/blob/ef8336e2705fce2502383f25d68188c6b1f94dd0/doc/develop/driver-model/nvme.rst#L44
>> >
>> > El mar, 8 ago 2023 a las 22:05, Simon Glass (<sjg at google.com>)
>> escribió:
>> >>
>> >> Hi Luis,
>> >>
>> >> On Tue, 8 Aug 2023 at 17:09, Luis Alfredo da Silva
>> >> <luis.adasilvaf at gmail.com> wrote:
>> >> >
>> >> > I compiled u-boot version 2023-07 and boot it on a RPi CM4 using a
>> PCIe M.2
>> >> > NVMe drive, but it doesn't appear to be working.
>> >> >
>> >> > Once u-boot has started and boot successfully it recognizes the PCIe
>> device
>> >> > giving me the next output
>> >> >
>> >> > U-Boot> pci
>> >> > BusDevFun  VendorId   DeviceId   Device Class       Sub-Class
>> >> > _____________________________________________________________
>> >> > 00.00.00   0x14e4     0x2711     Bridge device           0x04
>> >> > 01.00.00   0x1c5c     0x174a     Mass storage controller 0x08
>> >> >
>> >> > but when trying to use the nvme scan and nvme info there is not
>> output.
>> >> >
>> >> > NVMe drive has two partitions 1st is a FAT partition, and 2nd is a
>> EXT4
>> >> > partition, the RPi firmware recognizes the FAT partition and u-boot
>> boot
>> >> > correctly.
>> >> >
>> >> > I don't know if this worked before, but I saw in the mailing list
>> that
>> >> > there could be already support for other ARM64 boards.
>> >>
>> >> Is NVME_PCI enabled?
>> >>
>> >> Regards,
>> >> SImon
>>
>