[Qemu-devel] [PULL 00/11] Changes to -drive without if= and with if=scsi

[Qemu-devel] [PULL 00/11] Changes to -drive without if= and with if=scsi

[Markus Armbruster]

The following changes since commit b856256179f14c33a513d0b9cc3e4be355b95f43:

  Merge remote-tracking branch 'remotes/kraxel/tags/pull-usb-20170221-1' into staging (2017-02-21 09:35:15 +0000)

are available in the git repository at:

  git://repo.or.cz/qemu/armbru.git tags/pull-block-2017-02-21

for you to fetch changes up to f778a82f0c179634892ea716970d4d35264dc841:

  hw/i386: Deprecate -drive if=scsi with PC machine types (2017-02-21 13:17:45 +0100)

----------------------------------------------------------------
Changes to -drive without if= and with if=scsi

----------------------------------------------------------------
Markus Armbruster (11):
      hw: Default -drive to if=ide explicitly where it works
      hw/arm/cubieboard hw/arm/xlnx-ep108: Fix units_per_default_bus
      hw: Default -drive to if=none instead of ide when ide cannot work
      hw: Default -drive to if=none instead of scsi when scsi cannot work
      hw/arm/highbank: Default -drive to if=ide instead of if=scsi
      blockdev: Improve message for orphaned -drive
      blockdev: Make orphaned -drive fatal
      hw: Drop superfluous special checks for orphaned -drive
      hw/scsi: Concentrate -drive if=scsi auto-create in one place
      hw: Deprecate -drive if=scsi with non-onboard HBAs
      hw/i386: Deprecate -drive if=scsi with PC machine types

 blockdev.c                    | 23 ++++++++++--------
 hw/alpha/dp264.c              |  1 +
 hw/arm/cubieboard.c           |  4 ++++
 hw/arm/highbank.c             |  8 +++++--
 hw/arm/realview.c             |  3 +--
 hw/arm/spitz.c                |  3 +++
 hw/arm/tosa.c                 |  1 +
 hw/arm/versatilepb.c          |  2 +-
 hw/arm/vexpress.c             |  1 -
 hw/arm/xilinx_zynq.c          |  1 -
 hw/arm/xlnx-ep108.c           |  6 +++++
 hw/i386/pc.c                  |  7 ++++++
 hw/ide/core.c                 | 17 -------------
 hw/mips/mips_fulong2e.c       |  1 +
 hw/mips/mips_jazz.c           |  4 ----
 hw/mips/mips_malta.c          |  1 +
 hw/mips/mips_r4k.c            |  1 +
 hw/ppc/mac_newworld.c         |  1 +
 hw/ppc/mac_oldworld.c         |  1 +
 hw/ppc/prep.c                 |  1 +
 hw/scsi/esp-pci.c             |  3 ---
 hw/scsi/esp.c                 |  6 -----
 hw/scsi/lsi53c895a.c          | 10 +++++---
 hw/scsi/megasas.c             |  4 ----
 hw/scsi/mptsas.c              |  4 ----
 hw/scsi/scsi-bus.c            | 56 +++++++++++++++++++++++++++++++++++++------
 hw/scsi/spapr_vscsi.c         |  5 ++--
 hw/scsi/virtio-scsi.c         |  8 -------
 hw/sh4/r2d.c                  |  1 +
 hw/sparc/sun4m.c              |  5 ----
 hw/sparc64/sun4u.c            |  2 ++
 include/hw/pci/pci.h          |  2 ++
 include/hw/scsi/scsi.h        |  3 ++-
 include/sysemu/blockdev.h     | 11 ++++-----
 qemu-options.hx               |  5 ----
 tests/qemu-iotests/051.pc.out | 12 ++++++----
 vl.c                          | 10 ++++++++
 37 files changed, 137 insertions(+), 97 deletions(-)

[Qemu-devel] [PULL 01/11] hw: Default -drive to if=ide explicitly where it works

[Markus Armbruster]

Block backends defined with -drive if=ide are meant to be picked up by
machine initialization code: a suitable frontend gets created and
wired up automatically.

if=ide drives not picked up that way can still be used with -device as
if they had if=none, but that's unclean and best avoided.  Unused ones
produce an "Orphaned drive without device" warning.

-drive parameter "if" is optional, and the default depends on the
machine type.  If a machine type doesn't specify a default, the
default is "ide".

Many machine types default to if=ide, even though they don't actually
have an IDE controller.  A future patch will change these defaults to
something more sensible.  To prepare for it, this patch makes default
"ide" explicit for the machines that actually pick up if=ide drives:

* alpha: clipper
* arm/aarch64: spitz borzoi terrier tosa
* i386/x86_64: generic-pc-machine (with concrete subtypes pc-q35-*
  pc-i440fx-* pc-* isapc xenfv)
* mips64el: fulong2e
* mips/mipsel/mips64el: malta mips
* ppc/ppc64: mac99 g3beige prep
* sh4/sh4eb: r2d
* sparc64: sun4u sun4v

Note that ppc64 machine powernv already sets an "ide" default
explicitly.  Its IDE controller isn't implemented, yet.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <1487153147-11530-2-git-send-email-armbru@redhat.com>
---
 hw/alpha/dp264.c        | 1 +
 hw/arm/spitz.c          | 3 +++
 hw/arm/tosa.c           | 1 +
 hw/i386/pc.c            | 1 +
 hw/mips/mips_fulong2e.c | 1 +
 hw/mips/mips_malta.c    | 1 +
 hw/mips/mips_r4k.c      | 1 +
 hw/ppc/mac_newworld.c   | 1 +
 hw/ppc/mac_oldworld.c   | 1 +
 hw/ppc/prep.c           | 1 +
 hw/sh4/r2d.c            | 1 +
 hw/sparc64/sun4u.c      | 2 ++
 12 files changed, 15 insertions(+)

diff --git a/hw/alpha/dp264.c b/hw/alpha/dp264.c
index d6431fd..85405da 100644
--- a/hw/alpha/dp264.c
+++ b/hw/alpha/dp264.c
@@ -177,6 +177,7 @@ static void clipper_machine_init(MachineClass *mc)
 {
     mc->desc = "Alpha DP264/CLIPPER";
     mc->init = clipper_init;
+    mc->block_default_type = IF_IDE;
     mc->max_cpus = 4;
     mc->is_default = 1;
 }
diff --git a/hw/arm/spitz.c b/hw/arm/spitz.c
index 949a15a..fe2d5a7 100644
--- a/hw/arm/spitz.c
+++ b/hw/arm/spitz.c
@@ -998,6 +998,7 @@ static void spitzpda_class_init(ObjectClass *oc, void *data)
 
     mc->desc = "Sharp SL-C3000 (Spitz) PDA (PXA270)";
     mc->init = spitz_init;
+    mc->block_default_type = IF_IDE;
 }
 
 static const TypeInfo spitzpda_type = {
@@ -1012,6 +1013,7 @@ static void borzoipda_class_init(ObjectClass *oc, void *data)
 
     mc->desc = "Sharp SL-C3100 (Borzoi) PDA (PXA270)";
     mc->init = borzoi_init;
+    mc->block_default_type = IF_IDE;
 }
 
 static const TypeInfo borzoipda_type = {
@@ -1026,6 +1028,7 @@ static void terrierpda_class_init(ObjectClass *oc, void *data)
 
     mc->desc = "Sharp SL-C3200 (Terrier) PDA (PXA270)";
     mc->init = terrier_init;
+    mc->block_default_type = IF_IDE;
 }
 
 static const TypeInfo terrierpda_type = {
diff --git a/hw/arm/tosa.c b/hw/arm/tosa.c
index c3db996..9f58a23 100644
--- a/hw/arm/tosa.c
+++ b/hw/arm/tosa.c
@@ -263,6 +263,7 @@ static void tosapda_machine_init(MachineClass *mc)
 {
     mc->desc = "Sharp SL-6000 (Tosa) PDA (PXA255)";
     mc->init = tosa_init;
+    mc->block_default_type = IF_IDE;
 }
 
 DEFINE_MACHINE("tosa", tosapda_machine_init)
diff --git a/hw/i386/pc.c b/hw/i386/pc.c
index e3fcd51..a555c35 100644
--- a/hw/i386/pc.c
+++ b/hw/i386/pc.c
@@ -2339,6 +2339,7 @@ static void pc_machine_class_init(ObjectClass *oc, void *data)
     mc->query_hotpluggable_cpus = pc_query_hotpluggable_cpus;
     mc->default_boot_order = "cad";
     mc->hot_add_cpu = pc_hot_add_cpu;
+    mc->block_default_type = IF_IDE;
     mc->max_cpus = 255;
     mc->reset = pc_machine_reset;
     hc->pre_plug = pc_machine_device_pre_plug_cb;
diff --git a/hw/mips/mips_fulong2e.c b/hw/mips/mips_fulong2e.c
index 9a4dae4..e636c3a 100644
--- a/hw/mips/mips_fulong2e.c
+++ b/hw/mips/mips_fulong2e.c
@@ -387,6 +387,7 @@ static void mips_fulong2e_machine_init(MachineClass *mc)
 {
     mc->desc = "Fulong 2e mini pc";
     mc->init = mips_fulong2e_init;
+    mc->block_default_type = IF_IDE;
 }
 
 DEFINE_MACHINE("fulong2e", mips_fulong2e_machine_init)
diff --git a/hw/mips/mips_malta.c b/hw/mips/mips_malta.c
index 75877de..5dd177e 100644
--- a/hw/mips/mips_malta.c
+++ b/hw/mips/mips_malta.c
@@ -1264,6 +1264,7 @@ static void mips_malta_machine_init(MachineClass *mc)
 {
     mc->desc = "MIPS Malta Core LV";
     mc->init = mips_malta_init;
+    mc->block_default_type = IF_IDE;
     mc->max_cpus = 16;
     mc->is_default = 1;
 }
diff --git a/hw/mips/mips_r4k.c b/hw/mips/mips_r4k.c
index 27548c4..748586e 100644
--- a/hw/mips/mips_r4k.c
+++ b/hw/mips/mips_r4k.c
@@ -306,6 +306,7 @@ static void mips_machine_init(MachineClass *mc)
 {
     mc->desc = "mips r4k platform";
     mc->init = mips_r4k_init;
+    mc->block_default_type = IF_IDE;
 }
 
 DEFINE_MACHINE("mips", mips_machine_init)
diff --git a/hw/ppc/mac_newworld.c b/hw/ppc/mac_newworld.c
index 2bfdb64..716aea6 100644
--- a/hw/ppc/mac_newworld.c
+++ b/hw/ppc/mac_newworld.c
@@ -518,6 +518,7 @@ static void core99_machine_class_init(ObjectClass *oc, void *data)
 
     mc->desc = "Mac99 based PowerMAC";
     mc->init = ppc_core99_init;
+    mc->block_default_type = IF_IDE;
     mc->max_cpus = MAX_CPUS;
     mc->default_boot_order = "cd";
     mc->kvm_type = core99_kvm_type;
diff --git a/hw/ppc/mac_oldworld.c b/hw/ppc/mac_oldworld.c
index 56282c5..5df94e2 100644
--- a/hw/ppc/mac_oldworld.c
+++ b/hw/ppc/mac_oldworld.c
@@ -368,6 +368,7 @@ static void heathrow_machine_init(MachineClass *mc)
 {
     mc->desc = "Heathrow based PowerMAC";
     mc->init = ppc_heathrow_init;
+    mc->block_default_type = IF_IDE;
     mc->max_cpus = MAX_CPUS;
 #ifndef TARGET_PPC64
     mc->is_default = 1;
diff --git a/hw/ppc/prep.c b/hw/ppc/prep.c
index ca7959c..961230c 100644
--- a/hw/ppc/prep.c
+++ b/hw/ppc/prep.c
@@ -684,6 +684,7 @@ static void prep_machine_init(MachineClass *mc)
 {
     mc->desc = "PowerPC PREP platform";
     mc->init = ppc_prep_init;
+    mc->block_default_type = IF_IDE;
     mc->max_cpus = MAX_CPUS;
     mc->default_boot_order = "cad";
 }
diff --git a/hw/sh4/r2d.c b/hw/sh4/r2d.c
index db373c7..6d06968 100644
--- a/hw/sh4/r2d.c
+++ b/hw/sh4/r2d.c
@@ -362,6 +362,7 @@ static void r2d_machine_init(MachineClass *mc)
 {
     mc->desc = "r2d-plus board";
     mc->init = r2d_init;
+    mc->block_default_type = IF_IDE;
 }
 
 DEFINE_MACHINE("r2d", r2d_machine_init)
diff --git a/hw/sparc64/sun4u.c b/hw/sparc64/sun4u.c
index d1a6bca..d347b66 100644
--- a/hw/sparc64/sun4u.c
+++ b/hw/sparc64/sun4u.c
@@ -579,6 +579,7 @@ static void sun4u_class_init(ObjectClass *oc, void *data)
 
     mc->desc = "Sun4u platform";
     mc->init = sun4u_init;
+    mc->block_default_type = IF_IDE;
     mc->max_cpus = 1; /* XXX for now */
     mc->is_default = 1;
     mc->default_boot_order = "c";
@@ -596,6 +597,7 @@ static void sun4v_class_init(ObjectClass *oc, void *data)
 
     mc->desc = "Sun4v platform";
     mc->init = sun4v_init;
+    mc->block_default_type = IF_IDE;
     mc->max_cpus = 1; /* XXX for now */
     mc->default_boot_order = "c";
 }
-- 
2.7.4

[Qemu-devel] [PULL 02/11] hw/arm/cubieboard hw/arm/xlnx-ep108: Fix units_per_default_bus

[Markus Armbruster]

Machine types cubieboard, xlnx-ep108, xlnx-zcu102 have an onboard AHCI
controller, but neglect to set their MachineClass member
units_per_default_bus = 1.  This permits -drive if=ide,unit=1, which
makes no sense for AHCI.  It also screws up index=N for odd N, because
it gets desugared to unit=1,bus=N/2

Doesn't really matter, because these machine types fail to honor
-drive if=ide.  Add the missing units_per_default_bus = 1 anyway,
along with a TODO comment on what needs to be done for -drive if=ide.

Also set block_default_type = IF_IDE explicitly.  It's currently the
default, but the next commit will change it to something more
sensible, and we want to keep the IF_IDE default for these three
machines.  See also the previous commit.

Cc: Beniamino Galvani <b.galvani@gmail.com>
Cc: Alistair Francis <alistair.francis@xilinx.com>
Cc: "Edgar E. Iglesias" <edgar.iglesias@gmail.com>
Cc: Peter Maydell <peter.maydell@linaro.org>
Cc: qemu-arm@nongnu.org
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Acked-by: Alistair Francis <alistair.francis@xilinx.com>
Message-Id: <1487153147-11530-3-git-send-email-armbru@redhat.com>
---
 hw/arm/cubieboard.c | 4 ++++
 hw/arm/xlnx-ep108.c | 6 ++++++
 2 files changed, 10 insertions(+)

diff --git a/hw/arm/cubieboard.c b/hw/arm/cubieboard.c
index dd19ba3..b98e1c4 100644
--- a/hw/arm/cubieboard.c
+++ b/hw/arm/cubieboard.c
@@ -71,6 +71,8 @@ static void cubieboard_init(MachineState *machine)
     memory_region_add_subregion(get_system_memory(), AW_A10_SDRAM_BASE,
                                 &s->sdram);
 
+    /* TODO create and connect IDE devices for ide_drive_get() */
+
     cubieboard_binfo.ram_size = machine->ram_size;
     cubieboard_binfo.kernel_filename = machine->kernel_filename;
     cubieboard_binfo.kernel_cmdline = machine->kernel_cmdline;
@@ -82,6 +84,8 @@ static void cubieboard_machine_init(MachineClass *mc)
 {
     mc->desc = "cubietech cubieboard";
     mc->init = cubieboard_init;
+    mc->block_default_type = IF_IDE;
+    mc->units_per_default_bus = 1;
 }
 
 DEFINE_MACHINE("cubieboard", cubieboard_machine_init)
diff --git a/hw/arm/xlnx-ep108.c b/hw/arm/xlnx-ep108.c
index 4ec590a..860780a 100644
--- a/hw/arm/xlnx-ep108.c
+++ b/hw/arm/xlnx-ep108.c
@@ -106,6 +106,8 @@ static void xlnx_ep108_init(MachineState *machine)
         sysbus_connect_irq(SYS_BUS_DEVICE(&s->soc.spi[i]), 1, cs_line);
     }
 
+    /* TODO create and connect IDE devices for ide_drive_get() */
+
     xlnx_ep108_binfo.ram_size = ram_size;
     xlnx_ep108_binfo.kernel_filename = machine->kernel_filename;
     xlnx_ep108_binfo.kernel_cmdline = machine->kernel_cmdline;
@@ -118,6 +120,8 @@ static void xlnx_ep108_machine_init(MachineClass *mc)
 {
     mc->desc = "Xilinx ZynqMP EP108 board";
     mc->init = xlnx_ep108_init;
+    mc->block_default_type = IF_IDE;
+    mc->units_per_default_bus = 1;
 }
 
 DEFINE_MACHINE("xlnx-ep108", xlnx_ep108_machine_init)
@@ -126,6 +130,8 @@ static void xlnx_zcu102_machine_init(MachineClass *mc)
 {
     mc->desc = "Xilinx ZynqMP ZCU102 board";
     mc->init = xlnx_ep108_init;
+    mc->block_default_type = IF_IDE;
+    mc->units_per_default_bus = 1;
 }
 
 DEFINE_MACHINE("xlnx-zcu102", xlnx_zcu102_machine_init)
-- 
2.7.4

[Qemu-devel] [PULL 03/11] hw: Default -drive to if=none instead of ide when ide cannot work

[Markus Armbruster]

Block backends defined with -drive if=ide are meant to be picked up by
machine initialization code: a suitable frontend gets created and
wired up automatically.

if=ide drives not picked up that way can still be used with -device as
if they had if=none, but that's unclean and best avoided.  Unused ones
produce an "Orphaned drive without device" warning.

-drive parameter "if" is optional, and the default depends on the
machine type.  If a machine type doesn't specify a default, the
default is "ide".

Many machine types implicitly default to if=ide that way, even though
they don't actually have an IDE controller.  This makes no sense.

Change the implicit default to if=none.  Affected machines:

* all targets: none
* aarch64/arm: akita ast2500 canon cheetah collie connex imx25
  integratorcp kzm lm3s6965evb lm3s811evb mainstone musicpal n800 n810
  netduino2 nuri palmetto realview romulus sabrelite smdkc210 sx1 sx1
  verdex z2
* cris: axis-dev88
* i386/x86_64: xenpv
* lm32: lm32-evr lm32-uclinux milkymist
* m68k: an5206 dummy mcf5208evb
* microblaze/microblazeel: petalogix-ml605 petalogix-s3adsp1800
* mips/mips64/mips64el/mipsel: mipssim
* moxie: moxiesim
* or32: or32-sim
* ppc/ppc64/ppcemb: bamboo ref405ep taihu virtex-ml507
* ppc/ppc64: mpc8544ds ppce500
* sh4/sh4eb: shix
* sparc: leon3_generic
* sparc64: niagara
* tricore: tricore_testboard
* unicore32: puv3
* xtensa/xtensaeb: kc705 lx200 lx60 ml605 sim

None of these machines have an IDE controller, let alone code to
honor if=ide.

Cc: Peter Maydell <peter.maydell@linaro.org>
Cc: qemu-arm@nongnu.org
Cc: Edgar E. Iglesias <edgar.iglesias@gmail.com>
Cc: Stefano Stabellini <sstabellini@kernel.org>
Cc: Anthony Perard <anthony.perard@citrix.com>
Cc: xen-devel@lists.xensource.com
Cc: Michael Walle <michael@walle.cc>
Cc: Laurent Vivier <laurent@vivier.eu>
Cc: Anthony Green <green@moxielogic.com>
Cc: Jia Liu <proljc@gmail.com>
Cc: Alexander Graf <agraf@suse.de>
Cc: qemu-ppc@nongnu.org
Cc: Magnus Damm <magnus.damm@gmail.com>
Cc: Fabien Chouteau <chouteau@adacore.com>
Cc: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Cc: Artyom Tarasenko <atar4qemu@gmail.com>
Cc: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Acked-By: Artyom Tarasenko <atar4qemu@gmail.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <1487153147-11530-4-git-send-email-armbru@redhat.com>
---
 include/sysemu/blockdev.h | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/include/sysemu/blockdev.h b/include/sysemu/blockdev.h
index 16432f3..351a039 100644
--- a/include/sysemu/blockdev.h
+++ b/include/sysemu/blockdev.h
@@ -19,12 +19,11 @@ void blockdev_auto_del(BlockBackend *blk);
 typedef enum {
     IF_DEFAULT = -1,            /* for use with drive_add() only */
     /*
-     * IF_IDE must be zero, because we want MachineClass member
-     * block_default_type to default-initialize to IF_IDE
+     * IF_NONE must be zero, because we want MachineClass member
+     * block_default_type to default-initialize to IF_NONE
      */
-    IF_IDE = 0,
-    IF_NONE,
-    IF_SCSI, IF_FLOPPY, IF_PFLASH, IF_MTD, IF_SD, IF_VIRTIO, IF_XEN,
+    IF_NONE = 0,
+    IF_IDE, IF_SCSI, IF_FLOPPY, IF_PFLASH, IF_MTD, IF_SD, IF_VIRTIO, IF_XEN,
     IF_COUNT
 } BlockInterfaceType;
 
-- 
2.7.4

[Qemu-devel] [PULL 04/11] hw: Default -drive to if=none instead of scsi when scsi cannot work

[Markus Armbruster]

Block backends defined with -drive if=scsi are meant to be picked up
by machine initialization code: a suitable frontend gets created and
wired up automatically.

if=scsi drives not picked up that way can still be used with -device
as if they had if=none, but that's unclean and best avoided.  Unused
ones produce an "Orphaned drive without device" warning.

A few machine types default to if=scsi, even though they don't
actually have a SCSI HBA.  This makes no sense.  Change their default
to if=none.  Affected machines:

* aarch64/arm: realview-pbx-a9 vexpress-a9 vexpress-a15 xilinx-zynq-a9

Cc: Peter Maydell <peter.maydell@linaro.org>
Cc: "Edgar E. Iglesias" <edgar.iglesias@gmail.com>
Cc: Alistair Francis <alistair.francis@xilinx.com>
Cc: qemu-arm@nongnu.org
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Alistair Francis <alistair.francis@xilinx.com>
Message-Id: <1487153147-11530-5-git-send-email-armbru@redhat.com>
---
 hw/arm/realview.c    | 1 -
 hw/arm/vexpress.c    | 1 -
 hw/arm/xilinx_zynq.c | 1 -
 3 files changed, 3 deletions(-)

diff --git a/hw/arm/realview.c b/hw/arm/realview.c
index 8eafcca..8c11c7a 100644
--- a/hw/arm/realview.c
+++ b/hw/arm/realview.c
@@ -443,7 +443,6 @@ static void realview_pbx_a9_class_init(ObjectClass *oc, void *data)
 
     mc->desc = "ARM RealView Platform Baseboard Explore for Cortex-A9";
     mc->init = realview_pbx_a9_init;
-    mc->block_default_type = IF_SCSI;
     mc->max_cpus = 4;
 }
 
diff --git a/hw/arm/vexpress.c b/hw/arm/vexpress.c
index e057568..c6b1e67 100644
--- a/hw/arm/vexpress.c
+++ b/hw/arm/vexpress.c
@@ -752,7 +752,6 @@ static void vexpress_class_init(ObjectClass *oc, void *data)
 
     mc->desc = "ARM Versatile Express";
     mc->init = vexpress_common_init;
-    mc->block_default_type = IF_SCSI;
     mc->max_cpus = 4;
 }
 
diff --git a/hw/arm/xilinx_zynq.c b/hw/arm/xilinx_zynq.c
index 7dac20d..3985356 100644
--- a/hw/arm/xilinx_zynq.c
+++ b/hw/arm/xilinx_zynq.c
@@ -323,7 +323,6 @@ static void zynq_machine_init(MachineClass *mc)
 {
     mc->desc = "Xilinx Zynq Platform Baseboard for Cortex-A9";
     mc->init = zynq_init;
-    mc->block_default_type = IF_SCSI;
     mc->max_cpus = 1;
     mc->no_sdcard = 1;
 }
-- 
2.7.4

[Qemu-devel] [PULL 05/11] hw/arm/highbank: Default -drive to if=ide instead of if=scsi

[Markus Armbruster]

These machines have no onboard SCSI HBA, and no way to plug one.
-drive if=scsi therefore cannot work.  They do have an onboard IDE
controller (sysbus-ahci), but fail to honor if=ide.

Change their default to if=ide, and add a TODO comment on what needs
to be done to actually honor -drive if=ide.

Cc: Rob Herring <robh@kernel.org>
Cc: Peter Maydell <peter.maydell@linaro.org>
Cc: qemu-arm@nongnu.org
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <1487153147-11530-6-git-send-email-armbru@redhat.com>
---
 hw/arm/highbank.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/hw/arm/highbank.c b/hw/arm/highbank.c
index 80e5fd4..0a4508c 100644
--- a/hw/arm/highbank.c
+++ b/hw/arm/highbank.c
@@ -363,6 +363,8 @@ static void calxeda_init(MachineState *machine, enum cxmachines machine_id)
         sysbus_connect_irq(SYS_BUS_DEVICE(dev), 2, pic[82]);
     }
 
+    /* TODO create and connect IDE devices for ide_drive_get() */
+
     highbank_binfo.ram_size = ram_size;
     highbank_binfo.kernel_filename = kernel_filename;
     highbank_binfo.kernel_cmdline = kernel_cmdline;
@@ -405,7 +407,8 @@ static void highbank_class_init(ObjectClass *oc, void *data)
 
     mc->desc = "Calxeda Highbank (ECX-1000)";
     mc->init = highbank_init;
-    mc->block_default_type = IF_SCSI;
+    mc->block_default_type = IF_IDE;
+    mc->units_per_default_bus = 1;
     mc->max_cpus = 4;
 }
 
@@ -421,7 +424,8 @@ static void midway_class_init(ObjectClass *oc, void *data)
 
     mc->desc = "Calxeda Midway (ECX-2000)";
     mc->init = midway_init;
-    mc->block_default_type = IF_SCSI;
+    mc->block_default_type = IF_IDE;
+    mc->units_per_default_bus = 1;
     mc->max_cpus = 4;
 }
 
-- 
2.7.4

[Qemu-devel] [PULL 06/11] blockdev: Improve message for orphaned -drive

[Markus Armbruster]

We warn when a -drive isn't supported by the machine type (commit
a66c9dc):

    $ qemu-system-x86_64 -S -display none -drive if=mtd
    Warning: Orphaned drive without device: id=mtd0,file=,if=mtd,bus=0,unit=0

Improve this to point to the offending bit of configuration:

    qemu-system-x86_64: -drive if=mtd: warning: machine type does not support if=mtd,bus=0,unit=0

Especially nice when it's hidden behind -readconfig foo.cfg:

    qemu-system-x86_64:foo.cfg:140: warning: machine type does not support if=mtd,bus=0,unit=0

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1487153147-11530-7-git-send-email-armbru@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
---
 blockdev.c | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/blockdev.c b/blockdev.c
index db82ac9..eb75f35 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -231,6 +231,7 @@ bool drive_check_orphaned(void)
 {
     BlockBackend *blk;
     DriveInfo *dinfo;
+    Location loc;
     bool rs = false;
 
     for (blk = blk_next(NULL); blk; blk = blk_next(blk)) {
@@ -239,10 +240,12 @@ bool drive_check_orphaned(void)
         /* Unless this is a default drive, this may be an oversight. */
         if (!blk_get_attached_dev(blk) && !dinfo->is_default &&
             dinfo->type != IF_NONE) {
-            fprintf(stderr, "Warning: Orphaned drive without device: "
-                    "id=%s,file=%s,if=%s,bus=%d,unit=%d\n",
-                    blk_name(blk), blk_bs(blk) ? blk_bs(blk)->filename : "",
-                    if_name[dinfo->type], dinfo->bus, dinfo->unit);
+            loc_push_none(&loc);
+            qemu_opts_loc_restore(dinfo->opts);
+            error_report("warning: machine type does not support"
+                         " if=%s,bus=%d,unit=%d",
+                         if_name[dinfo->type], dinfo->bus, dinfo->unit);
+            loc_pop(&loc);
             rs = true;
         }
     }
-- 
2.7.4

[Qemu-devel] [PULL 07/11] blockdev: Make orphaned -drive fatal

[Markus Armbruster]

Block backends defined with "-drive if=T" with T other than "none" are
meant to be picked up by machine initialization code: a suitable
frontend gets created and wired up automatically.

If machine initialization code doesn't comply, the block backend
remains unused.  This triggers a warning since commit a66c9dc, v2.2.0.
Drives created by default are exempted; use -nodefaults to get rid of
them.

Turn this warning into an error.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1487153147-11530-8-git-send-email-armbru@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
---
 blockdev.c                | 14 +++++++-------
 include/sysemu/blockdev.h |  2 +-
 2 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/blockdev.c b/blockdev.c
index eb75f35..bbf9d4d 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -227,30 +227,30 @@ DriveInfo *drive_get(BlockInterfaceType type, int bus, int unit)
     return NULL;
 }
 
-bool drive_check_orphaned(void)
+void drive_check_orphaned(void)
 {
     BlockBackend *blk;
     DriveInfo *dinfo;
     Location loc;
-    bool rs = false;
+    bool orphans = false;
 
     for (blk = blk_next(NULL); blk; blk = blk_next(blk)) {
         dinfo = blk_legacy_dinfo(blk);
-        /* If dinfo->bdrv->dev is NULL, it has no device attached. */
-        /* Unless this is a default drive, this may be an oversight. */
         if (!blk_get_attached_dev(blk) && !dinfo->is_default &&
             dinfo->type != IF_NONE) {
             loc_push_none(&loc);
             qemu_opts_loc_restore(dinfo->opts);
-            error_report("warning: machine type does not support"
+            error_report("machine type does not support"
                          " if=%s,bus=%d,unit=%d",
                          if_name[dinfo->type], dinfo->bus, dinfo->unit);
             loc_pop(&loc);
-            rs = true;
+            orphans = true;
         }
     }
 
-    return rs;
+    if (orphans) {
+        exit(1);
+    }
 }
 
 DriveInfo *drive_get_by_index(BlockInterfaceType type, int index)
diff --git a/include/sysemu/blockdev.h b/include/sysemu/blockdev.h
index 351a039..ac22f2a 100644
--- a/include/sysemu/blockdev.h
+++ b/include/sysemu/blockdev.h
@@ -48,7 +48,7 @@ BlockBackend *blk_by_legacy_dinfo(DriveInfo *dinfo);
 void override_max_devs(BlockInterfaceType type, int max_devs);
 
 DriveInfo *drive_get(BlockInterfaceType type, int bus, int unit);
-bool drive_check_orphaned(void);
+void drive_check_orphaned(void);
 DriveInfo *drive_get_by_index(BlockInterfaceType type, int index);
 int drive_get_max_bus(BlockInterfaceType type);
 int drive_get_max_devs(BlockInterfaceType type);
-- 
2.7.4

[Qemu-devel] [PULL 08/11] hw: Drop superfluous special checks for orphaned -drive

[Markus Armbruster]

We've traditionally rejected orphans here and there, but not
systematically.  For instance, the sun4m machines have an onboard SCSI
HBA (bus=0), and have always rejected bus>0.  Other machines with an
onboard SCSI HBA don't.

Commit a66c9dc made all orphans trigger a warning, and the previous
commit turned this into an error.  The checks "here and there" are now
redundant.  Drop them.

Note that the one in mips_jazz.c was wrong: it rejected bus > MAX_FD,
but MAX_FD is the number of floppy drives per bus.

Error messages change from

    $ qemu-system-x86_64 -drive if=ide,bus=2
    qemu-system-x86_64: Too many IDE buses defined (3 > 2)
    $ qemu-system-mips64 -M magnum,accel=qtest -drive if=floppy,bus=2,id=fd1
    qemu: too many floppy drives
    $ qemu-system-sparc -M LX -drive if=scsi,bus=1
    qemu: too many SCSI bus

to

    $ qemu-system-x86_64 -drive if=ide,bus=2
    qemu-system-x86_64: -drive if=ide,bus=2: machine type does not support if=ide,bus=2,unit=0
    $ qemu-system-mips64 -M magnum,accel=qtest -drive if=floppy,bus=2,id=fd1
    qemu-system-mips64: -drive if=floppy,bus=2,id=fd1: machine type does not support if=floppy,bus=2,unit=0
    $ qemu-system-sparc -M LX -drive if=scsi,bus=1
    qemu-system-sparc: -drive if=scsi,bus=1: machine type does not support if=scsi,bus=1,unit=0

Cc: John Snow <jsnow@redhat.com>
Cc: "Hervé Poussineau" <hpoussin@reactos.org>
Cc: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1487153147-11530-9-git-send-email-armbru@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
---
 hw/ide/core.c       | 17 -----------------
 hw/mips/mips_jazz.c |  4 ----
 hw/sparc/sun4m.c    |  5 -----
 3 files changed, 26 deletions(-)

diff --git a/hw/ide/core.c b/hw/ide/core.c
index 43709e5..cfa5de6 100644
--- a/hw/ide/core.c
+++ b/hw/ide/core.c
@@ -2840,23 +2840,6 @@ const VMStateDescription vmstate_ide_bus = {
 void ide_drive_get(DriveInfo **hd, int n)
 {
     int i;
-    int highest_bus = drive_get_max_bus(IF_IDE) + 1;
-    int max_devs = drive_get_max_devs(IF_IDE);
-    int n_buses = max_devs ? (n / max_devs) : n;
-
-    /*
-     * Note: The number of actual buses available is not known.
-     * We compute this based on the size of the DriveInfo* array, n.
-     * If it is less than max_devs * <num_real_buses>,
-     * We will stop looking for drives prematurely instead of overfilling
-     * the array.
-     */
-
-    if (highest_bus > n_buses) {
-        error_report("Too many IDE buses defined (%d > %d)",
-                     highest_bus, n_buses);
-        exit(1);
-    }
 
     for (i = 0; i < n; i++) {
         hd[i] = drive_get_by_index(IF_IDE, i);
diff --git a/hw/mips/mips_jazz.c b/hw/mips/mips_jazz.c
index 73f6c9f..1cef581 100644
--- a/hw/mips/mips_jazz.c
+++ b/hw/mips/mips_jazz.c
@@ -291,10 +291,6 @@ static void mips_jazz_init(MachineState *machine,
              qdev_get_gpio_in(rc4030, 5), &esp_reset, &dma_enable);
 
     /* Floppy */
-    if (drive_get_max_bus(IF_FLOPPY) >= MAX_FD) {
-        fprintf(stderr, "qemu: too many floppy drives\n");
-        exit(1);
-    }
     for (n = 0; n < MAX_FD; n++) {
         fds[n] = drive_get(IF_FLOPPY, 0, n);
     }
diff --git a/hw/sparc/sun4m.c b/hw/sparc/sun4m.c
index f5b6efd..61416a6 100644
--- a/hw/sparc/sun4m.c
+++ b/hw/sparc/sun4m.c
@@ -989,11 +989,6 @@ static void sun4m_hw_init(const struct sun4m_hwdef *hwdef,
     slavio_misc_init(hwdef->slavio_base, hwdef->aux1_base, hwdef->aux2_base,
                      slavio_irq[30], fdc_tc);
 
-    if (drive_get_max_bus(IF_SCSI) > 0) {
-        fprintf(stderr, "qemu: too many SCSI bus\n");
-        exit(1);
-    }
-
     esp_init(hwdef->esp_base, 2,
              espdma_memory_read, espdma_memory_write,
              espdma, espdma_irq, &esp_reset, &dma_enable);
-- 
2.7.4

[Qemu-devel] [PULL 09/11] hw/scsi: Concentrate -drive if=scsi auto-create in one place

[Markus Armbruster]

The logic to create frontends for -drive if=scsi is in SCSI HBAs.  For
all other interface types, it's in machine initialization code.

A few machine types create the SCSI HBAs necessary for that.  That's
also not done for other interface types.

I'm going to deprecate these SCSI eccentricities.  In preparation for
that, create the frontends in main() instead of the SCSI HBAs, by
calling new function scsi_legacy_handle_cmdline() there.

Note that not all SCSI HBAs create frontends.  Take care not to change
that.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1487161136-9018-2-git-send-email-armbru@redhat.com>
Acked-By: Paolo Bonzini <pbonzini@redhat.com>
---
 hw/scsi/esp-pci.c      |  3 ---
 hw/scsi/esp.c          |  6 ------
 hw/scsi/lsi53c895a.c   |  3 ---
 hw/scsi/megasas.c      |  4 ----
 hw/scsi/mptsas.c       |  4 ----
 hw/scsi/scsi-bus.c     | 45 ++++++++++++++++++++++++++++++++++++++-------
 hw/scsi/spapr_vscsi.c  |  3 ---
 hw/scsi/virtio-scsi.c  |  8 --------
 include/hw/scsi/scsi.h |  3 ++-
 vl.c                   |  4 ++++
 10 files changed, 44 insertions(+), 39 deletions(-)

diff --git a/hw/scsi/esp-pci.c b/hw/scsi/esp-pci.c
index 595f88b..e295d88 100644
--- a/hw/scsi/esp-pci.c
+++ b/hw/scsi/esp-pci.c
@@ -367,9 +367,6 @@ static void esp_pci_scsi_realize(PCIDevice *dev, Error **errp)
     s->irq = pci_allocate_irq(dev);
 
     scsi_bus_new(&s->bus, sizeof(s->bus), d, &esp_pci_scsi_info, NULL);
-    if (!d->hotplugged) {
-        scsi_bus_legacy_handle_cmdline(&s->bus, errp);
-    }
 }
 
 static void esp_pci_scsi_uninit(PCIDevice *d)
diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c
index 5a5a4e9..eee831e 100644
--- a/hw/scsi/esp.c
+++ b/hw/scsi/esp.c
@@ -690,7 +690,6 @@ static void sysbus_esp_realize(DeviceState *dev, Error **errp)
     SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
     SysBusESPState *sysbus = ESP(dev);
     ESPState *s = &sysbus->esp;
-    Error *err = NULL;
 
     sysbus_init_irq(sbd, &s->irq);
     assert(sysbus->it_shift != -1);
@@ -703,11 +702,6 @@ static void sysbus_esp_realize(DeviceState *dev, Error **errp)
     qdev_init_gpio_in(dev, sysbus_esp_gpio_demux, 2);
 
     scsi_bus_new(&s->bus, sizeof(s->bus), dev, &esp_scsi_info, NULL);
-    scsi_bus_legacy_handle_cmdline(&s->bus, &err);
-    if (err != NULL) {
-        error_propagate(errp, err);
-        return;
-    }
 }
 
 static void sysbus_esp_hard_reset(DeviceState *dev)
diff --git a/hw/scsi/lsi53c895a.c b/hw/scsi/lsi53c895a.c
index feb1191..292fa87 100644
--- a/hw/scsi/lsi53c895a.c
+++ b/hw/scsi/lsi53c895a.c
@@ -2216,9 +2216,6 @@ static void lsi_scsi_realize(PCIDevice *dev, Error **errp)
     QTAILQ_INIT(&s->queue);
 
     scsi_bus_new(&s->bus, sizeof(s->bus), d, &lsi_scsi_info, NULL);
-    if (!d->hotplugged) {
-        scsi_bus_legacy_handle_cmdline(&s->bus, errp);
-    }
 }
 
 static void lsi_scsi_unrealize(DeviceState *dev, Error **errp)
diff --git a/hw/scsi/megasas.c b/hw/scsi/megasas.c
index 1a8b04c..e3d59b7 100644
--- a/hw/scsi/megasas.c
+++ b/hw/scsi/megasas.c
@@ -2325,7 +2325,6 @@ static const struct SCSIBusInfo megasas_scsi_info = {
 
 static void megasas_scsi_realize(PCIDevice *dev, Error **errp)
 {
-    DeviceState *d = DEVICE(dev);
     MegasasState *s = MEGASAS(dev);
     MegasasBaseClass *b = MEGASAS_DEVICE_GET_CLASS(s);
     uint8_t *pci_conf;
@@ -2426,9 +2425,6 @@ static void megasas_scsi_realize(PCIDevice *dev, Error **errp)
 
     scsi_bus_new(&s->bus, sizeof(s->bus), DEVICE(dev),
                  &megasas_scsi_info, NULL);
-    if (!d->hotplugged) {
-        scsi_bus_legacy_handle_cmdline(&s->bus, errp);
-    }
 }
 
 static Property megasas_properties_gen1[] = {
diff --git a/hw/scsi/mptsas.c b/hw/scsi/mptsas.c
index ad87e78..2e091c0 100644
--- a/hw/scsi/mptsas.c
+++ b/hw/scsi/mptsas.c
@@ -1271,7 +1271,6 @@ static const struct SCSIBusInfo mptsas_scsi_info = {
 
 static void mptsas_scsi_realize(PCIDevice *dev, Error **errp)
 {
-    DeviceState *d = DEVICE(dev);
     MPTSASState *s = MPT_SAS(dev);
     Error *err = NULL;
     int ret;
@@ -1326,9 +1325,6 @@ static void mptsas_scsi_realize(PCIDevice *dev, Error **errp)
     QTAILQ_INIT(&s->pending);
 
     scsi_bus_new(&s->bus, sizeof(s->bus), &dev->qdev, &mptsas_scsi_info, NULL);
-    if (!d->hotplugged) {
-        scsi_bus_legacy_handle_cmdline(&s->bus, errp);
-    }
 }
 
 static void mptsas_scsi_uninit(PCIDevice *dev)
diff --git a/hw/scsi/scsi-bus.c b/hw/scsi/scsi-bus.c
index 5940cb1..b9111ee 100644
--- a/hw/scsi/scsi-bus.c
+++ b/hw/scsi/scsi-bus.c
@@ -261,12 +261,11 @@ SCSIDevice *scsi_bus_legacy_add_drive(SCSIBus *bus, BlockBackend *blk,
     return SCSI_DEVICE(dev);
 }
 
-void scsi_bus_legacy_handle_cmdline(SCSIBus *bus, Error **errp)
+void scsi_bus_legacy_handle_cmdline(SCSIBus *bus)
 {
     Location loc;
     DriveInfo *dinfo;
     int unit;
-    Error *err = NULL;
 
     loc_push_none(&loc);
     for (unit = 0; unit <= bus->info->max_target; unit++) {
@@ -276,15 +275,47 @@ void scsi_bus_legacy_handle_cmdline(SCSIBus *bus, Error **errp)
         }
         qemu_opts_loc_restore(dinfo->opts);
         scsi_bus_legacy_add_drive(bus, blk_by_legacy_dinfo(dinfo),
-                                  unit, false, -1, NULL, &err);
-        if (err != NULL) {
-            error_propagate(errp, err);
-            break;
-        }
+                                  unit, false, -1, NULL, &error_fatal);
     }
     loc_pop(&loc);
 }
 
+static bool is_scsi_hba_with_legacy_magic(Object *obj)
+{
+    static const char *magic[] = {
+        "am53c974", "dc390", "esp", "lsi53c810", "lsi53c895a",
+        "megasas", "megasas-gen2", "mptsas1068", "spapr-vscsi",
+        "virtio-scsi-device",
+        NULL
+    };
+    const char *typename = object_get_typename(obj);
+    int i;
+
+    for (i = 0; magic[i]; i++)
+        if (!strcmp(typename, magic[i])) {
+            return true;
+    }
+
+    return false;
+}
+
+static int scsi_legacy_handle_cmdline_cb(Object *obj, void *opaque)
+{
+    SCSIBus *bus = (SCSIBus *)object_dynamic_cast(obj, TYPE_SCSI_BUS);
+
+    if (bus && is_scsi_hba_with_legacy_magic(OBJECT(bus->qbus.parent))) {
+        scsi_bus_legacy_handle_cmdline(bus);
+    }
+
+    return 0;
+}
+
+void scsi_legacy_handle_cmdline(void)
+{
+    object_child_foreach_recursive(object_get_root(),
+                                   scsi_legacy_handle_cmdline_cb, NULL);
+}
+
 static int32_t scsi_invalid_field(SCSIRequest *req, uint8_t *buf)
 {
     scsi_req_build_sense(req, SENSE_CODE(INVALID_FIELD));
diff --git a/hw/scsi/spapr_vscsi.c b/hw/scsi/spapr_vscsi.c
index 6090a20..7d44771 100644
--- a/hw/scsi/spapr_vscsi.c
+++ b/hw/scsi/spapr_vscsi.c
@@ -1206,9 +1206,6 @@ static void spapr_vscsi_realize(VIOsPAPRDevice *dev, Error **errp)
 
     scsi_bus_new(&s->bus, sizeof(s->bus), DEVICE(dev),
                  &vscsi_scsi_info, NULL);
-    if (!dev->qdev.hotplugged) {
-        scsi_bus_legacy_handle_cmdline(&s->bus, errp);
-    }
 }
 
 void spapr_vscsi_create(VIOsPAPRBus *bus)
diff --git a/hw/scsi/virtio-scsi.c b/hw/scsi/virtio-scsi.c
index b01030b..4fb9259 100644
--- a/hw/scsi/virtio-scsi.c
+++ b/hw/scsi/virtio-scsi.c
@@ -897,14 +897,6 @@ static void virtio_scsi_device_realize(DeviceState *dev, Error **errp)
     /* override default SCSI bus hotplug-handler, with virtio-scsi's one */
     qbus_set_hotplug_handler(BUS(&s->bus), dev, &error_abort);
 
-    if (!dev->hotplugged) {
-        scsi_bus_legacy_handle_cmdline(&s->bus, &err);
-        if (err != NULL) {
-            error_propagate(errp, err);
-            return;
-        }
-    }
-
     virtio_scsi_dataplane_setup(s, errp);
 }
 
diff --git a/include/hw/scsi/scsi.h b/include/hw/scsi/scsi.h
index 9bad49e..eeef949 100644
--- a/include/hw/scsi/scsi.h
+++ b/include/hw/scsi/scsi.h
@@ -177,7 +177,8 @@ static inline SCSIBus *scsi_bus_from_device(SCSIDevice *d)
 SCSIDevice *scsi_bus_legacy_add_drive(SCSIBus *bus, BlockBackend *blk,
                                       int unit, bool removable, int bootindex,
                                       const char *serial, Error **errp);
-void scsi_bus_legacy_handle_cmdline(SCSIBus *bus, Error **errp);
+void scsi_bus_legacy_handle_cmdline(SCSIBus *bus);
+void scsi_legacy_handle_cmdline(void);
 
 /*
  * Predefined sense codes
diff --git a/vl.c b/vl.c
index 27d9829..ab40889 100644
--- a/vl.c
+++ b/vl.c
@@ -62,6 +62,7 @@ int main(int argc, char **argv)
 #include "hw/usb.h"
 #include "hw/i386/pc.h"
 #include "hw/isa/isa.h"
+#include "hw/scsi/scsi.h"
 #include "hw/bt.h"
 #include "sysemu/watchdog.h"
 #include "hw/smbios/smbios.h"
@@ -4509,6 +4510,9 @@ int main(int argc, char **argv, char **envp)
 
     rom_reset_order_override();
 
+    /* Create frontends for -drive if=scsi */
+    scsi_legacy_handle_cmdline();
+
     /* Did we create any drives that we failed to create a device for? */
     drive_check_orphaned();
 
-- 
2.7.4

[Qemu-devel] [PULL 10/11] hw: Deprecate -drive if=scsi with non-onboard HBAs

[Markus Armbruster]

Block backends defined with "-drive if=T" with T other than "none" are
meant to be picked up by machine initialization code: a suitable
frontend gets created and wired up automatically.

Drives defined with if=scsi are also picked up by SCSI HBAs added with
-device, unlike other interface types.  Deprecate this usage, as follows.

Create the frontends for onboard HBAs in machine initialization code,
exactly like we do for if=ide and other interface types.  Change
scsi_legacy_handle_cmdline() to create a frontend only when it's still
missing, and warn that this usage is deprecated.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1487161136-9018-3-git-send-email-armbru@redhat.com>
---
 hw/arm/realview.c      |  2 +-
 hw/arm/versatilepb.c   |  2 +-
 hw/i386/pc.c           |  2 +-
 hw/scsi/lsi53c895a.c   |  7 +++++++
 hw/scsi/scsi-bus.c     | 15 +++++++++++++--
 hw/scsi/spapr_vscsi.c  |  2 ++
 include/hw/pci/pci.h   |  2 ++
 include/hw/scsi/scsi.h |  2 +-
 vl.c                   |  8 +++++++-
 9 files changed, 35 insertions(+), 7 deletions(-)

diff --git a/hw/arm/realview.c b/hw/arm/realview.c
index 8c11c7a..b7d4753 100644
--- a/hw/arm/realview.c
+++ b/hw/arm/realview.c
@@ -259,7 +259,7 @@ static void realview_init(MachineState *machine,
         }
         n = drive_get_max_bus(IF_SCSI);
         while (n >= 0) {
-            pci_create_simple(pci_bus, -1, "lsi53c895a");
+            lsi53c895a_create(pci_bus);
             n--;
         }
     }
diff --git a/hw/arm/versatilepb.c b/hw/arm/versatilepb.c
index 7b5cb36..b0e9f5b 100644
--- a/hw/arm/versatilepb.c
+++ b/hw/arm/versatilepb.c
@@ -290,7 +290,7 @@ static void versatile_init(MachineState *machine, int board_id)
     }
     n = drive_get_max_bus(IF_SCSI);
     while (n >= 0) {
-        pci_create_simple(pci_bus, -1, "lsi53c895a");
+        lsi53c895a_create(pci_bus);
         n--;
     }
 
diff --git a/hw/i386/pc.c b/hw/i386/pc.c
index a555c35..c2c75e2 100644
--- a/hw/i386/pc.c
+++ b/hw/i386/pc.c
@@ -1652,7 +1652,7 @@ void pc_pci_device_init(PCIBus *pci_bus)
 
     max_bus = drive_get_max_bus(IF_SCSI);
     for (bus = 0; bus <= max_bus; bus++) {
-        pci_create_simple(pci_bus, -1, "lsi53c895a");
+        lsi53c895a_create(pci_bus);
     }
 }
 
diff --git a/hw/scsi/lsi53c895a.c b/hw/scsi/lsi53c895a.c
index 292fa87..595c260 100644
--- a/hw/scsi/lsi53c895a.c
+++ b/hw/scsi/lsi53c895a.c
@@ -2268,3 +2268,10 @@ static void lsi53c895a_register_types(void)
 }
 
 type_init(lsi53c895a_register_types)
+
+void lsi53c895a_create(PCIBus *bus)
+{
+    LSIState *s = LSI53C895A(pci_create_simple(bus, -1, "lsi53c895a"));
+
+    scsi_bus_legacy_handle_cmdline(&s->bus, false);
+}
diff --git a/hw/scsi/scsi-bus.c b/hw/scsi/scsi-bus.c
index b9111ee..8cc80bf 100644
--- a/hw/scsi/scsi-bus.c
+++ b/hw/scsi/scsi-bus.c
@@ -261,7 +261,7 @@ SCSIDevice *scsi_bus_legacy_add_drive(SCSIBus *bus, BlockBackend *blk,
     return SCSI_DEVICE(dev);
 }
 
-void scsi_bus_legacy_handle_cmdline(SCSIBus *bus)
+void scsi_bus_legacy_handle_cmdline(SCSIBus *bus, bool deprecated)
 {
     Location loc;
     DriveInfo *dinfo;
@@ -274,6 +274,17 @@ void scsi_bus_legacy_handle_cmdline(SCSIBus *bus)
             continue;
         }
         qemu_opts_loc_restore(dinfo->opts);
+        if (deprecated) {
+            /* Handling -drive not claimed by machine initialization */
+            if (blk_get_attached_dev(blk_by_legacy_dinfo(dinfo))) {
+                continue;       /* claimed */
+            }
+            if (!dinfo->is_default) {
+                error_report("warning: bus=%d,unit=%d is deprecated with this"
+                             " machine type",
+                             bus->busnr, unit);
+            }
+        }
         scsi_bus_legacy_add_drive(bus, blk_by_legacy_dinfo(dinfo),
                                   unit, false, -1, NULL, &error_fatal);
     }
@@ -304,7 +315,7 @@ static int scsi_legacy_handle_cmdline_cb(Object *obj, void *opaque)
     SCSIBus *bus = (SCSIBus *)object_dynamic_cast(obj, TYPE_SCSI_BUS);
 
     if (bus && is_scsi_hba_with_legacy_magic(OBJECT(bus->qbus.parent))) {
-        scsi_bus_legacy_handle_cmdline(bus);
+        scsi_bus_legacy_handle_cmdline(bus, true);
     }
 
     return 0;
diff --git a/hw/scsi/spapr_vscsi.c b/hw/scsi/spapr_vscsi.c
index 7d44771..55ee48c 100644
--- a/hw/scsi/spapr_vscsi.c
+++ b/hw/scsi/spapr_vscsi.c
@@ -1215,6 +1215,8 @@ void spapr_vscsi_create(VIOsPAPRBus *bus)
     dev = qdev_create(&bus->bus, "spapr-vscsi");
 
     qdev_init_nofail(dev);
+    scsi_bus_legacy_handle_cmdline(&VIO_SPAPR_VSCSI_DEVICE(dev)->bus,
+                                   false);
 }
 
 static int spapr_vscsi_devnode(VIOsPAPRDevice *dev, void *fdt, int node_off)
diff --git a/include/hw/pci/pci.h b/include/hw/pci/pci.h
index 05ef14b..6983f13 100644
--- a/include/hw/pci/pci.h
+++ b/include/hw/pci/pci.h
@@ -688,6 +688,8 @@ PCIDevice *pci_create_simple_multifunction(PCIBus *bus, int devfn,
 PCIDevice *pci_create(PCIBus *bus, int devfn, const char *name);
 PCIDevice *pci_create_simple(PCIBus *bus, int devfn, const char *name);
 
+void lsi53c895a_create(PCIBus *bus);
+
 qemu_irq pci_allocate_irq(PCIDevice *pci_dev);
 void pci_set_irq(PCIDevice *pci_dev, int level);
 
diff --git a/include/hw/scsi/scsi.h b/include/hw/scsi/scsi.h
index eeef949..6b85786 100644
--- a/include/hw/scsi/scsi.h
+++ b/include/hw/scsi/scsi.h
@@ -177,7 +177,7 @@ static inline SCSIBus *scsi_bus_from_device(SCSIDevice *d)
 SCSIDevice *scsi_bus_legacy_add_drive(SCSIBus *bus, BlockBackend *blk,
                                       int unit, bool removable, int bootindex,
                                       const char *serial, Error **errp);
-void scsi_bus_legacy_handle_cmdline(SCSIBus *bus);
+void scsi_bus_legacy_handle_cmdline(SCSIBus *bus, bool deprecated);
 void scsi_legacy_handle_cmdline(void);
 
 /*
diff --git a/vl.c b/vl.c
index ab40889..b5d0a19 100644
--- a/vl.c
+++ b/vl.c
@@ -4510,7 +4510,13 @@ int main(int argc, char **argv, char **envp)
 
     rom_reset_order_override();
 
-    /* Create frontends for -drive if=scsi */
+    /*
+     * Create frontends for -drive if=scsi leftovers.
+     * Normally, frontends for -drive get created by machine
+     * initialization for onboard SCSI HBAs.  However, we create a few
+     * more ever since SCSI qdevification, but this is pretty much an
+     * implementation accident, and deprecated.
+     */
     scsi_legacy_handle_cmdline();
 
     /* Did we create any drives that we failed to create a device for? */
-- 
2.7.4

[Qemu-devel] [PULL 11/11] hw/i386: Deprecate -drive if=scsi with PC machine types

[Markus Armbruster]

The PC machines (pc-q35-* pc-i440fx-* pc-* isapc xenfv) automatically
create lsi53c895a SCSI HBAs and SCSI devices to honor -drive if=scsi.
For giggles, try -drive if=scsi,bus=25,media=cdrom --- this makes QEMU
create 25 of them.

lsi53c895a is thoroughly obsolete (PCI Ultra2 SCSI, ca. 2000), and
currently has no maintainer in QEMU.  megasas is a better choice,
except with old OSes that lack drivers.  virtio-scsi is a much better
choice when you have a driver, but only (newish) Linux comes with one
in the box.  There is no good default that works for all guests.

Encourage users to pick a non-obsolete SCSI HBA that works for them by
deprecating -drive if=scsi.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1487161136-9018-4-git-send-email-armbru@redhat.com>
Acked-By: Paolo Bonzini <pbonzini@redhat.com>
---
 hw/i386/pc.c                  |  8 +++++++-
 qemu-options.hx               |  5 -----
 tests/qemu-iotests/051.pc.out | 12 ++++++++----
 3 files changed, 15 insertions(+), 10 deletions(-)

diff --git a/hw/i386/pc.c b/hw/i386/pc.c
index c2c75e2..60b0946 100644
--- a/hw/i386/pc.c
+++ b/hw/i386/pc.c
@@ -1650,9 +1650,15 @@ void pc_pci_device_init(PCIBus *pci_bus)
     int max_bus;
     int bus;
 
+    /* Note: if=scsi is deprecated with PC machine types */
     max_bus = drive_get_max_bus(IF_SCSI);
     for (bus = 0; bus <= max_bus; bus++) {
-        lsi53c895a_create(pci_bus);
+        pci_create_simple(pci_bus, -1, "lsi53c895a");
+        /*
+         * By not creating frontends here, we make
+         * scsi_legacy_handle_cmdline() create them, and warn that
+         * this usage is deprecated.
+         */
     }
 }
 
diff --git a/qemu-options.hx b/qemu-options.hx
index 809b2b0..1e815ef 100644
--- a/qemu-options.hx
+++ b/qemu-options.hx
@@ -654,11 +654,6 @@ If you don't specify the "file=" argument, you define an empty drive:
 qemu-system-i386 -drive if=ide,index=1,media=cdrom
 @end example
 
-You can connect a SCSI disk with unit ID 6 on the bus #0:
-@example
-qemu-system-i386 -drive file=file,if=scsi,bus=0,unit=6
-@end example
-
 Instead of @option{-fda}, @option{-fdb}, you can use:
 @example
 qemu-system-i386 -drive file=file,index=0,if=floppy
diff --git a/tests/qemu-iotests/051.pc.out b/tests/qemu-iotests/051.pc.out
index 603bb76..f8047a2 100644
--- a/tests/qemu-iotests/051.pc.out
+++ b/tests/qemu-iotests/051.pc.out
@@ -118,7 +118,8 @@ QEMU X.Y.Z monitor - type 'help' for more information
 
 Testing: -drive if=scsi,media=cdrom
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) q^[[K^[[Dqu^[[K^[[D^[[Dqui^[[K^[[D^[[D^[[Dquit^[[K
+(qemu) QEMU_PROG: -drive if=scsi,media=cdrom: warning: bus=0,unit=0 is deprecated with this machine type
+q^[[K^[[Dqu^[[K^[[D^[[Dqui^[[K^[[D^[[D^[[Dquit^[[K
 
 Testing: -drive if=ide
 QEMU X.Y.Z monitor - type 'help' for more information
@@ -127,7 +128,8 @@ QEMU_PROG: Initialization of device ide-hd failed: Device initialization failed.
 
 Testing: -drive if=scsi
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) QEMU_PROG: Initialization of device lsi53c895a failed: Device needs media, but drive is empty
+(qemu) QEMU_PROG: -drive if=scsi: warning: bus=0,unit=0 is deprecated with this machine type
+QEMU_PROG: -drive if=scsi: Device needs media, but drive is empty
 
 Testing: -drive if=virtio
 QEMU X.Y.Z monitor - type 'help' for more information
@@ -172,7 +174,8 @@ QEMU X.Y.Z monitor - type 'help' for more information
 
 Testing: -drive file=TEST_DIR/t.qcow2,if=scsi,media=cdrom,readonly=on
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) q^[[K^[[Dqu^[[K^[[D^[[Dqui^[[K^[[D^[[D^[[Dquit^[[K
+(qemu) QEMU_PROG: -drive file=TEST_DIR/t.qcow2,if=scsi,media=cdrom,readonly=on: warning: bus=0,unit=0 is deprecated with this machine type
+q^[[K^[[Dqu^[[K^[[D^[[Dqui^[[K^[[D^[[D^[[Dquit^[[K
 
 Testing: -drive file=TEST_DIR/t.qcow2,if=ide,readonly=on
 QEMU X.Y.Z monitor - type 'help' for more information
@@ -181,7 +184,8 @@ QEMU_PROG: Initialization of device ide-hd failed: Device initialization failed.
 
 Testing: -drive file=TEST_DIR/t.qcow2,if=scsi,readonly=on
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) q^[[K^[[Dqu^[[K^[[D^[[Dqui^[[K^[[D^[[D^[[Dquit^[[K
+(qemu) QEMU_PROG: -drive file=TEST_DIR/t.qcow2,if=scsi,readonly=on: warning: bus=0,unit=0 is deprecated with this machine type
+q^[[K^[[Dqu^[[K^[[D^[[Dqui^[[K^[[D^[[D^[[Dquit^[[K
 
 Testing: -drive file=TEST_DIR/t.qcow2,if=virtio,readonly=on
 QEMU X.Y.Z monitor - type 'help' for more information
-- 
2.7.4

Re: [Qemu-devel] [PULL 00/11] Changes to -drive without if= and with if=scsi

[no-reply]

Hi,

This series seems to have some coding style problems. See output below for
more information:

Type: series
Subject: [Qemu-devel] [PULL 00/11] Changes to -drive without if= and with if=scsi
Message-id: 1487680479-15132-1-git-send-email-armbru@redhat.com

=== TEST SCRIPT BEGIN ===
#!/bin/bash

BASE=base
n=1
total=$(git log --oneline $BASE.. | wc -l)
failed=0

# Useful git options
git config --local diff.renamelimit 0
git config --local diff.renames True

commits="$(git log --format=%H --reverse $BASE..)"
for c in $commits; do
    echo "Checking PATCH $n/$total: $(git log -n 1 --format=%s $c)..."
    if ! git show $c --format=email | ./scripts/checkpatch.pl --mailback -; then
        failed=1
        echo
    fi
    n=$((n+1))
done

exit $failed
=== TEST SCRIPT END ===

Updating 3c8cf5a9c21ff8782164d1def7f44bd888713384
From https://github.com/patchew-project/qemu
 - [tag update]      patchew/1486531462-13882-1-git-send-email-zhangchen.fnst@cn.fujitsu.com -> patchew/1486531462-13882-1-git-send-email-zhangchen.fnst@cn.fujitsu.com
 * [new tag]         patchew/1487680479-15132-1-git-send-email-armbru@redhat.com -> patchew/1487680479-15132-1-git-send-email-armbru@redhat.com
 * [new tag]         patchew/1487682332-29154-1-git-send-email-kraxel@redhat.com -> patchew/1487682332-29154-1-git-send-email-kraxel@redhat.com
Switched to a new branch 'test'
8bfef42 hw/i386: Deprecate -drive if=scsi with PC machine types
7638d3f hw: Deprecate -drive if=scsi with non-onboard HBAs
dc17149 hw/scsi: Concentrate -drive if=scsi auto-create in one place
6196006 hw: Drop superfluous special checks for orphaned -drive
3d87f86 blockdev: Make orphaned -drive fatal
a7472ca blockdev: Improve message for orphaned -drive
781e308 hw/arm/highbank: Default -drive to if=ide instead of if=scsi
04b725b hw: Default -drive to if=none instead of scsi when scsi cannot work
cecd7a2 hw: Default -drive to if=none instead of ide when ide cannot work
027c597 hw/arm/cubieboard hw/arm/xlnx-ep108: Fix units_per_default_bus
ccfec9e hw: Default -drive to if=ide explicitly where it works

=== OUTPUT BEGIN ===
Checking PATCH 1/11: hw: Default -drive to if=ide explicitly where it works...
Checking PATCH 2/11: hw/arm/cubieboard hw/arm/xlnx-ep108: Fix units_per_default_bus...
Checking PATCH 3/11: hw: Default -drive to if=none instead of ide when ide cannot work...
Checking PATCH 4/11: hw: Default -drive to if=none instead of scsi when scsi cannot work...
Checking PATCH 5/11: hw/arm/highbank: Default -drive to if=ide instead of if=scsi...
Checking PATCH 6/11: blockdev: Improve message for orphaned -drive...
Checking PATCH 7/11: blockdev: Make orphaned -drive fatal...
Checking PATCH 8/11: hw: Drop superfluous special checks for orphaned -drive...
Checking PATCH 9/11: hw/scsi: Concentrate -drive if=scsi auto-create in one place...
Checking PATCH 10/11: hw: Deprecate -drive if=scsi with non-onboard HBAs...
Checking PATCH 11/11: hw/i386: Deprecate -drive if=scsi with PC machine types...
ERROR: Invalid UTF-8, patch and commit message should be encoded in UTF-8
#72: FILE: tests/qemu-iotests/051.pc.out:122:
+q^[[K^[[Dqu^[[K^[[D^[[Dqui^[[K^[[D^[[D^[[Dquit^[[K
  ^

ERROR: Invalid UTF-8, patch and commit message should be encoded in UTF-8
#92: FILE: tests/qemu-iotests/051.pc.out:178:
+q^[[K^[[Dqu^[[K^[[D^[[Dqui^[[K^[[D^[[D^[[Dquit^[[K
  ^

ERROR: Invalid UTF-8, patch and commit message should be encoded in UTF-8
#102: FILE: tests/qemu-iotests/051.pc.out:188:
+q^[[K^[[Dqu^[[K^[[D^[[Dqui^[[K^[[D^[[D^[[Dquit^[[K
  ^

total: 3 errors, 0 warnings, 63 lines checked

Your patch has style problems, please review.  If any of these errors
are false positives report them to the maintainer, see
CHECKPATCH in MAINTAINERS.

=== OUTPUT END ===

Test command exited with code: 1


---
Email generated automatically by Patchew [http://patchew.org/].
Please send your feedback to patchew-devel@freelists.org

Re: [Qemu-devel] [PULL 00/11] Changes to -drive without if= and with if=scsi

[Peter Maydell]

On 21 February 2017 at 12:34, Markus Armbruster <armbru@redhat.com> wrote:
> The following changes since commit b856256179f14c33a513d0b9cc3e4be355b95f43:
>
>   Merge remote-tracking branch 'remotes/kraxel/tags/pull-usb-20170221-1' into staging (2017-02-21 09:35:15 +0000)
>
> are available in the git repository at:
>
>   git://repo.or.cz/qemu/armbru.git tags/pull-block-2017-02-21
>
> for you to fetch changes up to f778a82f0c179634892ea716970d4d35264dc841:
>
>   hw/i386: Deprecate -drive if=scsi with PC machine types (2017-02-21 13:17:45 +0100)
>
> ----------------------------------------------------------------
> Changes to -drive without if= and with if=scsi
>
> ----------------------------------------------------------------
> Markus Armbruster (11):
>       hw: Default -drive to if=ide explicitly where it works
>       hw/arm/cubieboard hw/arm/xlnx-ep108: Fix units_per_default_bus
>       hw: Default -drive to if=none instead of ide when ide cannot work
>       hw: Default -drive to if=none instead of scsi when scsi cannot work
>       hw/arm/highbank: Default -drive to if=ide instead of if=scsi
>       blockdev: Improve message for orphaned -drive
>       blockdev: Make orphaned -drive fatal
>       hw: Drop superfluous special checks for orphaned -drive
>       hw/scsi: Concentrate -drive if=scsi auto-create in one place
>       hw: Deprecate -drive if=scsi with non-onboard HBAs
>       hw/i386: Deprecate -drive if=scsi with PC machine types

Applied, thanks.

-- PMM