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Re: [Qemu-devel] [PATCHv3] Support default block interfaces per QEMUMach

From: Igor Mitsyanko
Subject: Re: [Qemu-devel] [PATCHv3] Support default block interfaces per QEMUMachine
Date: Wed, 21 Nov 2012 16:07:59 +0400
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:16.0) Gecko/20121028 Thunderbird/16.0.2
This version of patch doesn't change anything for majority of machines, its just that later we can choose ourself which default block interface to use. So, nothing to review from Exynos point of view, but patch 
is OK, except realview_pb_a8 part (see bellow):

Acked-by: Igor Mitsyanko <address@hidden>


On 11/20/2012 06:30 PM, Christian Borntraeger wrote:
@@ -379,13 +379,14 @@ static QEMUMachine realview_pb_a8_machine = { 
      .name = "realview-pb-a8",
      .desc = "ARM RealView Platform Baseboard for Cortex-A8",
      .init = realview_pb_a8_init,
+    .block_default_type = IF_SCSI,
  };



I think that's an unintentional change?



  static QEMUMachine realview_pbx_a9_machine = {
      .name = "realview-pbx-a9",
      .desc = "ARM RealView Platform Baseboard Explore for Cortex-A9",
      .init = realview_pbx_a9_init,
-    .use_scsi = 1,
+    .block_default_type = IF_SCSI,
      .max_cpus = 4,
  };
diff --git a/hw/s390-virtio.c b/hw/s390-virtio.c 
index 685cb54..64bb5a2 100644
--- a/hw/s390-virtio.c
+++ b/hw/s390-virtio.c
@@ -315,21 +315,6 @@ static void s390_init(QEMUMachineInitArgs *args)
          qdev_set_nic_properties(dev, nd);
          qdev_init_nofail(dev);
      }
-
-    /* Create VirtIO disk drives */
-    for(i = 0; i < MAX_BLK_DEVS; i++) {
-        DriveInfo *dinfo;
-        DeviceState *dev;
-
-        dinfo = drive_get(IF_IDE, 0, i);
-        if (!dinfo) {
-            continue;
-        }
-
-        dev = qdev_create((BusState *)s390_bus, "virtio-blk-s390");
-        qdev_prop_set_drive_nofail(dev, "drive", dinfo->bdrv);
-        qdev_init_nofail(dev);
-    }
  }
static QEMUMachine s390_machine = { 
@@ -337,6 +322,7 @@ static QEMUMachine s390_machine = {
      .alias = "s390",
      .desc = "VirtIO based S390 machine",
      .init = s390_init,
+    .block_default_type = IF_VIRTIO,
      .no_cdrom = 1,
      .no_floppy = 1,
      .no_serial = 1,
@@ -353,3 +339,4 @@ static void s390_machine_init(void)
  }
machine_init(s390_machine_init); 
+
diff --git a/hw/spapr.c b/hw/spapr.c
index ad3f0ea..d955f02 100644
--- a/hw/spapr.c
+++ b/hw/spapr.c
@@ -924,9 +924,9 @@ static QEMUMachine spapr_machine = {
      .desc = "pSeries Logical Partition (PAPR compliant)",
      .init = ppc_spapr_init,
      .reset = ppc_spapr_reset,
+    .block_default_type = IF_SCSI,
      .max_cpus = MAX_CPUS,
      .no_parallel = 1,
-    .use_scsi = 1,
  };
static void spapr_machine_init(void) 
diff --git a/hw/sun4m.c b/hw/sun4m.c
index 1a78676..52cf82b 100644
--- a/hw/sun4m.c
+++ b/hw/sun4m.c
@@ -1426,7 +1426,7 @@ static QEMUMachine ss5_machine = {
      .name = "SS-5",
      .desc = "Sun4m platform, SPARCstation 5",
      .init = ss5_init,
-    .use_scsi = 1,
+    .block_default_type = IF_SCSI,
      .is_default = 1,
  };
@@ -1434,7 +1434,7 @@ static QEMUMachine ss10_machine = { 
      .name = "SS-10",
      .desc = "Sun4m platform, SPARCstation 10",
      .init = ss10_init,
-    .use_scsi = 1,
+    .block_default_type = IF_SCSI,
      .max_cpus = 4,
  };
@@ -1442,7 +1442,7 @@ static QEMUMachine ss600mp_machine = { 
      .name = "SS-600MP",
      .desc = "Sun4m platform, SPARCserver 600MP",
      .init = ss600mp_init,
-    .use_scsi = 1,
+    .block_default_type = IF_SCSI,
      .max_cpus = 4,
  };
@@ -1450,7 +1450,7 @@ static QEMUMachine ss20_machine = { 
      .name = "SS-20",
      .desc = "Sun4m platform, SPARCstation 20",
      .init = ss20_init,
-    .use_scsi = 1,
+    .block_default_type = IF_SCSI,
      .max_cpus = 4,
  };
@@ -1458,35 +1458,35 @@ static QEMUMachine voyager_machine = { 
      .name = "Voyager",
      .desc = "Sun4m platform, SPARCstation Voyager",
      .init = vger_init,
-    .use_scsi = 1,
+    .block_default_type = IF_SCSI,
  };
static QEMUMachine ss_lx_machine = { 
      .name = "LX",
      .desc = "Sun4m platform, SPARCstation LX",
      .init = ss_lx_init,
-    .use_scsi = 1,
+    .block_default_type = IF_SCSI,
  };
static QEMUMachine ss4_machine = { 
      .name = "SS-4",
      .desc = "Sun4m platform, SPARCstation 4",
      .init = ss4_init,
-    .use_scsi = 1,
+    .block_default_type = IF_SCSI,
  };
static QEMUMachine scls_machine = { 
      .name = "SPARCClassic",
      .desc = "Sun4m platform, SPARCClassic",
      .init = scls_init,
-    .use_scsi = 1,
+    .block_default_type = IF_SCSI,
  };
static QEMUMachine sbook_machine = { 
      .name = "SPARCbook",
      .desc = "Sun4m platform, SPARCbook",
      .init = sbook_init,
-    .use_scsi = 1,
+    .block_default_type = IF_SCSI,
  };
static const struct sun4d_hwdef sun4d_hwdefs[] = { 
@@ -1709,7 +1709,7 @@ static QEMUMachine ss1000_machine = {
      .name = "SS-1000",
      .desc = "Sun4d platform, SPARCserver 1000",
      .init = ss1000_init,
-    .use_scsi = 1,
+    .block_default_type = IF_SCSI,
      .max_cpus = 8,
  };
@@ -1717,7 +1717,7 @@ static QEMUMachine ss2000_machine = { 
      .name = "SS-2000",
      .desc = "Sun4d platform, SPARCcenter 2000",
      .init = ss2000_init,
-    .use_scsi = 1,
+    .block_default_type = IF_SCSI,
      .max_cpus = 20,
  };
@@ -1896,7 +1896,7 @@ static QEMUMachine ss2_machine = { 
      .name = "SS-2",
      .desc = "Sun4c platform, SPARCstation 2",
      .init = ss2_init,
-    .use_scsi = 1,
+    .block_default_type = IF_SCSI,
  };
static void sun4m_register_types(void) 
diff --git a/hw/versatilepb.c b/hw/versatilepb.c
index 25e652b..4892c1d 100644
--- a/hw/versatilepb.c
+++ b/hw/versatilepb.c
@@ -358,14 +358,14 @@ static QEMUMachine versatilepb_machine = {
      .name = "versatilepb",
      .desc = "ARM Versatile/PB (ARM926EJ-S)",
      .init = vpb_init,
-    .use_scsi = 1,
+    .block_default_type = IF_SCSI,
  };
static QEMUMachine versatileab_machine = { 
      .name = "versatileab",
      .desc = "ARM Versatile/AB (ARM926EJ-S)",
      .init = vab_init,
-    .use_scsi = 1,
+    .block_default_type = IF_SCSI,
  };
static void versatile_machine_init(void) 
diff --git a/hw/vexpress.c b/hw/vexpress.c
index d93f057..e89694c 100644
--- a/hw/vexpress.c
+++ b/hw/vexpress.c
@@ -477,7 +477,7 @@ static QEMUMachine vexpress_a9_machine = {
      .name = "vexpress-a9",
      .desc = "ARM Versatile Express for Cortex-A9",
      .init = vexpress_a9_init,
-    .use_scsi = 1,
+    .block_default_type = IF_SCSI,
      .max_cpus = 4,
  };
@@ -485,7 +485,7 @@ static QEMUMachine vexpress_a15_machine = { 
      .name = "vexpress-a15",
      .desc = "ARM Versatile Express for Cortex-A15",
      .init = vexpress_a15_init,
-    .use_scsi = 1,
+    .block_default_type = IF_SCSI,
      .max_cpus = 4,
  };
diff --git a/hw/xilinx_zynq.c b/hw/xilinx_zynq.c 
index 1f12a3d..a4a71c2 100644
--- a/hw/xilinx_zynq.c
+++ b/hw/xilinx_zynq.c
@@ -200,7 +200,7 @@ static QEMUMachine zynq_machine = {
      .name = "xilinx-zynq-a9",
      .desc = "Xilinx Zynq Platform Baseboard for Cortex-A9",
      .init = zynq_init,
-    .use_scsi = 1,
+    .block_default_type = IF_SCSI,
      .max_cpus = 1,
      .no_sdcard = 1
  };
diff --git a/vl.c b/vl.c
index c8e9c78..86f0dd8 100644
--- a/vl.c
+++ b/vl.c
@@ -886,9 +886,9 @@ static int cleanup_add_fd(QemuOpts *opts, void *opaque)
static int drive_init_func(QemuOpts *opts, void *opaque) 
  {
-    int *use_scsi = opaque;
+    BlockInterfaceType *block_default_type = opaque;
- return drive_init(opts, *use_scsi) == NULL; 
+    return drive_init(opts, *block_default_type) == NULL;
  }
static int drive_enable_snapshot(QemuOpts *opts, void *opaque) 
@@ -899,14 +899,15 @@ static int drive_enable_snapshot(QemuOpts *opts, void 
*opaque)
      return 0;
  }
-static void default_drive(int enable, int snapshot, int use_scsi, 
+static void default_drive(int enable, int snapshot,
+                          BlockInterfaceType block_default_type,
                            BlockInterfaceType type, int index,
                            const char *optstr)
  {
      QemuOpts *opts;
if (type == IF_DEFAULT) { 
-        type = use_scsi ? IF_SCSI : IF_IDE;
+        type = block_default_type;
      }
if (!enable || drive_get_by_index(type, index)) { 
@@ -917,7 +918,7 @@ static void default_drive(int enable, int snapshot, int 
use_scsi,
      if (snapshot) {
          drive_enable_snapshot(opts, NULL);
      }
-    if (!drive_init(opts, use_scsi)) {
+    if (!drive_init(opts, type)) {
          exit(1);
      }
  }
@@ -3774,14 +3775,16 @@ int main(int argc, char **argv, char **envp)
      /* open the virtual block devices */
      if (snapshot)
          qemu_opts_foreach(qemu_find_opts("drive"), drive_enable_snapshot, 
NULL, 0);
-    if (qemu_opts_foreach(qemu_find_opts("drive"), drive_init_func, 
&machine->use_scsi, 1) != 0)
+    if (qemu_opts_foreach(qemu_find_opts("drive"), drive_init_func,
+                          &machine->block_default_type, 1) != 0) {
          exit(1);
+    }
- default_drive(default_cdrom, snapshot, machine->use_scsi, 
+    default_drive(default_cdrom, snapshot, machine->block_default_type,
                    IF_DEFAULT, 2, CDROM_OPTS);
-    default_drive(default_floppy, snapshot, machine->use_scsi,
+    default_drive(default_floppy, snapshot, machine->block_default_type,
                    IF_FLOPPY, 0, FD_OPTS);
-    default_drive(default_sdcard, snapshot, machine->use_scsi,
+    default_drive(default_sdcard, snapshot, machine->block_default_type,
                    IF_SD, 0, SD_OPTS);
register_savevm_live(NULL, "ram", 0, 4, &savevm_ram_handlers, NULL); 

--
Mitsyanko Igor
ASWG, Moscow R&D center, Samsung Electronics
email: address@hidden
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