Re: [PATCH v5 04/10] hw/fsi: Introduce IBM's FSI

[Ninad Palsule <ninad@linux.ibm.com>]

Hello Daniel,

On 10/19/23 03:28, Daniel P. Berrangé wrote:
> On Wed, Oct 11, 2023 at 10:13:33AM -0500, Ninad Palsule wrote:
>> This is a part of patchset where IBM's Flexible Service Interface is
>> introduced.
>>
>> This commit models the FSI bus. CFAM is hanging out of FSI bus. The bus
>> is model such a way that it is embedded inside the FSI master which is a
>> bus controller.
>>
>> The FSI master: A controller in the platform service processor (e.g.
>> BMC) driving CFAM engine accesses into the POWER chip. At the
>> hardware level FSI is a bit-based protocol supporting synchronous and
>> DMA-driven accesses of engines in a CFAM.
>>
>> Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
>> Signed-off-by: Cédric Le Goater <clg@kaod.org>
>> Signed-off-by: Ninad Palsule <ninad@linux.ibm.com>
>> Reviewed-by: Joel Stanley <joel@jms.id.au>
>> ---
>> v2:
>> - Incorporated review comments by Joel
>> v5:
>> - Incorporated review comments by Cedric.
>> ---
>>   include/hw/fsi/fsi-master.h |  30 ++++++
>>   include/hw/fsi/fsi.h        |  37 +++++++
>>   hw/fsi/cfam.c               |   2 +-
>>   hw/fsi/fsi-master.c         | 199 ++++++++++++++++++++++++++++++++++++
>>   hw/fsi/fsi.c                |  54 ++++++++++
>>   hw/fsi/meson.build          |   2 +-
>>   hw/fsi/trace-events         |   2 +
>>   7 files changed, 324 insertions(+), 2 deletions(-)
>>   create mode 100644 include/hw/fsi/fsi-master.h
>>   create mode 100644 include/hw/fsi/fsi.h
>>   create mode 100644 hw/fsi/fsi-master.c
>>   create mode 100644 hw/fsi/fsi.c
>>
>> +static void fsi_master_realize(DeviceState *dev, Error **errp)
>> +{
>> +    FSIMasterState *s = FSI_MASTER(dev);
>> +    Error *err = NULL;
>> +
>> +    qbus_init(&s->bus, sizeof(s->bus), TYPE_FSI_BUS, DEVICE(s), NULL);
>> +
>> +    memory_region_init_io(&s->iomem, OBJECT(s), &fsi_master_ops, s,
>> +                          TYPE_FSI_MASTER, 0x10000000);
>> +    memory_region_init(&s->opb2fsi, OBJECT(s), "fsi.opb2fsi", 0x10000000);
>> +
>> +    object_property_set_bool(OBJECT(&s->bus), "realized", true, &err);
>> +    if (err) {
>> +        error_propagate(errp, err);
>> +        return;
>> +    }
> Redundant Error object, just check return value of set_bool
Fixed.
>
>> +
>> +    memory_region_add_subregion(&s->opb2fsi, 0, &s->bus.slave.mr);
>> +}
>> +static void fsi_bus_realize(BusState *bus, Error **errp)
>> +{
>> +    FSIBus *s = FSI_BUS(bus);
>> +    Error *err = NULL;
>> +
>> +    /* Note: Move it elsewhere when we add more CFAMs. */
>> +    object_property_set_bool(OBJECT(&s->slave), "realized", true, &err);
>> +    if (err) {
>> +        error_propagate(errp, err);
>> +    }
> Likewise.

Fixed.

Thanks for the review.

Regards,

Ninad

>> +}
>> +
> With regards,
> Daniel