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Re: [Minios-devel] [UNIKRAFT PATCH v3 03/14] plat/virtio: Skeleton for virtio block driver



Hi Roxana,

You wrote: " Taken and adapted from virtio-net because of consistency reason". 
Were there any authors listed in the original file? If so, please let us know 
which, we can fix that on upstreaming.

-- Felipe

On 11.03.20, 02:38, "Justin He" <Justin.He@xxxxxxx> wrote:

    LGTM except for the license statement. I thought Simon or Felipe need to
    review the license part. Others e.g. functional, LGTM
    
    Reviewed-by: Jia He <justin.he@xxxxxxx>
    
    --
    Cheers,
    Justin (Jia He)
    
    
    > -----Original Message-----
    > From: Roxana Nicolescu <nicolescu.roxana1996@xxxxxxxxx>
    > Sent: Friday, March 6, 2020 4:30 AM
    > To: minios-devel@xxxxxxxxxxxxx
    > Cc: Justin He <Justin.He@xxxxxxx>; Roxana Nicolescu
    > <nicolescu.roxana1996@xxxxxxxxx>
    > Subject: [UNIKRAFT PATCH v3 03/14] plat/virtio: Skeleton for virtio block
    > driver
    >
    > This patch introduces the virtio block driver skeleton.
    >
    > Signed-off-by: Roxana Nicolescu <nicolescu.roxana1996@xxxxxxxxx>
    > ---
    >  plat/drivers/virtio/virtio_blk.c | 58 ++++++++++++++++++++++++++++++++
    >  plat/kvm/Config.uk               | 12 ++++++-
    >  plat/kvm/Makefile.uk             | 12 +++++++
    >  3 files changed, 81 insertions(+), 1 deletion(-)
    >  create mode 100644 plat/drivers/virtio/virtio_blk.c
    >
    > diff --git a/plat/drivers/virtio/virtio_blk.c 
b/plat/drivers/virtio/virtio_blk.c
    > new file mode 100644
    > index 00000000..89fd1779
    > --- /dev/null
    > +++ b/plat/drivers/virtio/virtio_blk.c
    > @@ -0,0 +1,58 @@
    > +/*
    > + * Authors: Roxana Nicolescu <nicolescu.roxana1996@xxxxxxxxx>
    > + *
    > + * Copyright (c) 2019, University Politehnica of Bucharest.
    > + *
    > + * Permission to use, copy, modify, and/or distribute this software
    > + * for any purpose with or without fee is hereby granted, provided
    > + * that the above copyright notice and this permission notice appear
    > + * in all copies.
    > + *
    > + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
    > + * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
    > + * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
    > THE
    > + * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR
    > + * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
    > FROM LOSS
    > + * OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
    > + * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
    > + * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
    > + */
    > +/* Taken and adapted from virtio-net because of consistency reason. */
    > +
    > +#include <virtio/virtio_bus.h>
    > +#include <virtio/virtio_ids.h>
    > +
    > +#define DRIVER_NAME"virtio-blk"
    > +
    > +static struct uk_alloc *a;
    > +
    > +static int virtio_blk_add_dev(struct virtio_dev *vdev)
    > +{
    > +int rc = 0;
    > +
    > +UK_ASSERT(vdev != NULL);
    > +
    > +return rc;
    > +}
    > +
    > +static int virtio_blk_drv_init(struct uk_alloc *drv_allocator)
    > +{
    > +/* driver initialization */
    > +if (!drv_allocator)
    > +return -EINVAL;
    > +
    > +a = drv_allocator;
    > +return 0;
    > +}
    > +
    > +static const struct virtio_dev_id vblk_dev_id[] = {
    > +{VIRTIO_ID_BLOCK},
    > +{VIRTIO_ID_INVALID} /* List Terminator */
    > +};
    > +
    > +static struct virtio_driver vblk_drv = {
    > +.dev_ids = vblk_dev_id,
    > +.init    = virtio_blk_drv_init,
    > +.add_dev = virtio_blk_add_dev
    > +};
    > +VIRTIO_BUS_REGISTER_DRIVER(&vblk_drv);
    > diff --git a/plat/kvm/Config.uk b/plat/kvm/Config.uk
    > index 432cdd95..9aa8a632 100644
    > --- a/plat/kvm/Config.uk
    > +++ b/plat/kvm/Config.uk
    > @@ -65,7 +65,7 @@ config VIRTIO_BUS
    >  menu "Virtio"
    >  config VIRTIO_PCI
    >         bool "Virtio PCI device support"
    > -       default y if (VIRTIO_NET || VIRTIO_9P)
    > +       default y if (VIRTIO_NET || VIRTIO_9P || VIRTIO_BLK)
    >         default n
    >         depends on KVM_PCI
    >         select VIRTIO_BUS
    > @@ -83,6 +83,16 @@ config VIRTIO_NET
    >         help
    >                Virtual network driver.
    >
    > +config VIRTIO_BLK
    > +bool "Virtio Block Device"
    > +default y if LIBUKBLKDEV
    > +default n
    > +depends on LIBUKBLKDEV
    > +select VIRTIO_BUS
    > +select LIBUKGLIST
    > +help
    > +Virtual block driver.
    > +
    >  config VIRTIO_9P
    >         bool "Virtio 9P device"
    >         default y if LIBUK9P
    > diff --git a/plat/kvm/Makefile.uk b/plat/kvm/Makefile.uk
    > index 63ed9950..7f07f22f 100644
    > --- a/plat/kvm/Makefile.uk
    > +++ b/plat/kvm/Makefile.uk
    > @@ -10,6 +10,7 @@ $(eval $(call addplatlib,kvm,libkvmplat))
    >  $(eval $(call addplatlib_s,kvm,libkvmpci,$(CONFIG_KVM_PCI)))
    >  $(eval $(call addplatlib_s,kvm,libkvmvirtio,$(CONFIG_VIRTIO_BUS)))
    >  $(eval $(call addplatlib_s,kvm,libkvmvirtionet,$(CONFIG_VIRTIO_NET)))
    > +$(eval $(call addplatlib_s,kvm,libkvmvirtioblk,$(CONFIG_VIRTIO_BLK)))
    >  $(eval $(call addplatlib_s,kvm,libkvmvirtio9p,$(CONFIG_VIRTIO_9P)))
    >  $(eval $(call addplatlib_s,kvm,libkvmofw,$(CONFIG_LIBOFW)))
    >  $(eval $(call addplatlib_s,kvm,libkvmgicv2,$(CONFIG_LIBGICV2)))
    > @@ -139,6 +140,17 @@ LIBKVMVIRTIONET_ASINCLUDES-y   += -
    > I$(UK_PLAT_DRIVERS_BASE)/include
    >  LIBKVMVIRTIONET_CINCLUDES-y    += -I$(UK_PLAT_DRIVERS_BASE)/include
    >  LIBKVMVIRTIONET_SRCS-y +=\
    >  $(UK_PLAT_DRIVERS_BASE)/virtio/virtio_net.c
    > +##
    > +## Virtio BLK library definition
    > +##
    > +LIBKVMVIRTIOBLK_ASINCLUDES-y   += -I$(LIBKVMPLAT_BASE)/include
    > +LIBKVMVIRTIOBLK_CINCLUDES-y    += -I$(LIBKVMPLAT_BASE)/include
    > +LIBKVMVIRTIOBLK_ASINCLUDES-y   += -I$(UK_PLAT_COMMON_BASE)/include
    > +LIBKVMVIRTIOBLK_CINCLUDES-y    += -I$(UK_PLAT_COMMON_BASE)/include
    > +LIBKVMVIRTIOBLK_ASINCLUDES-y   += -I$(UK_PLAT_DRIVERS_BASE)/include
    > +LIBKVMVIRTIOBLK_CINCLUDES-y    += -I$(UK_PLAT_DRIVERS_BASE)/include
    > +LIBKVMVIRTIOBLK_SRCS-y +=\
    > +$(UK_PLAT_DRIVERS_BASE)/virtio/virtio_blk.c
    >
    >  ##
    >  ## Virtio 9P library definition
    > --
    > 2.17.1
    
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