diff mbox series

[V7,4/6] hw/arm/virt: Use the pvpanic device

Message ID 1542365406-81310-5-git-send-email-peng.hao2@zte.com.cn (mailing list archive)
State New, archived
Headers show
Series add pvpanic mmio support | expand

Commit Message

Peng Hao Nov. 16, 2018, 10:50 a.m. UTC 
Add pvpanic device in arm virt machine.

Signed-off-by: Peng Hao <peng.hao2@zte.com.cn>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
 default-configs/arm-softmmu.mak |  1 +
 hw/arm/virt.c                   | 21 +++++++++++++++++++++
 include/hw/arm/virt.h           |  1 +
 3 files changed, 23 insertions(+)

Comments

Shannon Zhao Nov. 16, 2018, 3:29 a.m. UTC | #1 
Hi,

On 2018/11/16 18:50, Peng Hao wrote:
>   Add pvpanic device in arm virt machine.
> 
> Signed-off-by: Peng Hao<peng.hao2@zte.com.cn>
> Signed-off-by: Philippe Mathieu-Daudé<philmd@redhat.com>
> ---
>   default-configs/arm-softmmu.mak |  1 +
>   hw/arm/virt.c                   | 21 +++++++++++++++++++++
>   include/hw/arm/virt.h           |  1 +
>   3 files changed, 23 insertions(+)
> 
> diff --git a/default-configs/arm-softmmu.mak b/default-configs/arm-softmmu.mak
> index 2420491..50345df 100644
> --- a/default-configs/arm-softmmu.mak
> +++ b/default-configs/arm-softmmu.mak
> @@ -159,3 +159,4 @@ CONFIG_PCI_DESIGNWARE=y
>   CONFIG_STRONGARM=y
>   CONFIG_HIGHBANK=y
>   CONFIG_MUSICPAL=y
> +CONFIG_PVPANIC=y
> diff --git a/hw/arm/virt.c b/hw/arm/virt.c
> index 9f67782..c4f29c8 100644
> --- a/hw/arm/virt.c
> +++ b/hw/arm/virt.c
> @@ -59,6 +59,7 @@
>   #include "qapi/visitor.h"
>   #include "standard-headers/linux/input.h"
>   #include "hw/arm/smmuv3.h"
> +#include "hw/misc/pvpanic.h"
>   
>   #define DEFINE_VIRT_MACHINE_LATEST(major, minor, latest) \
>       static void virt_##major##_##minor##_class_init(ObjectClass *oc, \
> @@ -143,6 +144,7 @@ static const MemMapEntry a15memmap[] = {
>       [VIRT_GPIO] =               { 0x09030000, 0x00001000 },
>       [VIRT_SECURE_UART] =        { 0x09040000, 0x00001000 },
>       [VIRT_SMMU] =               { 0x09050000, 0x00020000 },
> +    [VIRT_PVPANIC] =            { 0x09070000, 0x00000002 },
>       [VIRT_MMIO] =               { 0x0a000000, 0x00000200 },
>       /* ...repeating for a total of NUM_VIRTIO_TRANSPORTS, each of that size */
>       [VIRT_PLATFORM_BUS] =       { 0x0c000000, 0x02000000 },
> @@ -190,6 +192,23 @@ static bool cpu_type_valid(const char *cpu)
>       return false;
>   }
>   
> +static void create_pvpanic_device(const VirtMachineState *vms)
> +{
> +    char *nodename;
> +    hwaddr base = vms->memmap[VIRT_PVPANIC].base;
> +    hwaddr size = vms->memmap[VIRT_PVPANIC].size;
> +
> +    sysbus_create_simple(TYPE_PVPANIC_MMIO, base, NULL);
> +
> +    nodename = g_strdup_printf("/pvpanic-mmio@%" PRIx64, base);
> +    qemu_fdt_add_subnode(vms->fdt, nodename);
> +    qemu_fdt_setprop_string(vms->fdt, nodename,
> +                            "compatible", "qemu,pvpanic-mmio");
> +    qemu_fdt_setprop_sized_cells(vms->fdt, nodename, "reg",
> +                                 2, base, 2, size);
> +    g_free(nodename);
> +}
> +
>   static void create_fdt(VirtMachineState *vms)
>   {
>       void *fdt = create_device_tree(&vms->fdt_size);
> @@ -1531,6 +1550,8 @@ static void machvirt_init(MachineState *machine)
>   
>       create_flash(vms, sysmem, secure_sysmem ? secure_sysmem : sysmem);
>   
> +    create_pvpanic_device(vms);
> +
It should not create pvpanic by default. It should be configurable via 
-device pvpanic.

Thanks,
Shannon
Peng Hao Nov. 16, 2018, 4:31 a.m. UTC | #2 
>Hi,
>
>On 2018/11/16 18:50, Peng Hao wrote:
>>   Add pvpanic device in arm virt machine.
[...]
>>
>> +    create_pvpanic_device(vms);
>> +
>It should not create pvpanic by default. It should be configurable via
>-device pvpanic.
yeah ,it is a problem. I will resolve it.
Thanks.
>Thanks,
>Shannon
Peter Maydell Nov. 20, 2018, 2:32 p.m. UTC | #3 
On 16 November 2018 at 10:50, Peng Hao <peng.hao2@zte.com.cn> wrote:
>  Add pvpanic device in arm virt machine.
>
> Signed-off-by: Peng Hao <peng.hao2@zte.com.cn>
> Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
> ---
>  default-configs/arm-softmmu.mak |  1 +
>  hw/arm/virt.c                   | 21 +++++++++++++++++++++
>  include/hw/arm/virt.h           |  1 +
>  3 files changed, 23 insertions(+)
>
> diff --git a/default-configs/arm-softmmu.mak b/default-configs/arm-softmmu.mak
> index 2420491..50345df 100644
> --- a/default-configs/arm-softmmu.mak
> +++ b/default-configs/arm-softmmu.mak
> @@ -159,3 +159,4 @@ CONFIG_PCI_DESIGNWARE=y
>  CONFIG_STRONGARM=y
>  CONFIG_HIGHBANK=y
>  CONFIG_MUSICPAL=y
> +CONFIG_PVPANIC=y
> diff --git a/hw/arm/virt.c b/hw/arm/virt.c
> index 9f67782..c4f29c8 100644
> --- a/hw/arm/virt.c
> +++ b/hw/arm/virt.c
> @@ -59,6 +59,7 @@
>  #include "qapi/visitor.h"
>  #include "standard-headers/linux/input.h"
>  #include "hw/arm/smmuv3.h"
> +#include "hw/misc/pvpanic.h"
>
>  #define DEFINE_VIRT_MACHINE_LATEST(major, minor, latest) \
>      static void virt_##major##_##minor##_class_init(ObjectClass *oc, \
> @@ -143,6 +144,7 @@ static const MemMapEntry a15memmap[] = {
>      [VIRT_GPIO] =               { 0x09030000, 0x00001000 },
>      [VIRT_SECURE_UART] =        { 0x09040000, 0x00001000 },
>      [VIRT_SMMU] =               { 0x09050000, 0x00020000 },
> +    [VIRT_PVPANIC] =            { 0x09070000, 0x00000002 },
>      [VIRT_MMIO] =               { 0x0a000000, 0x00000200 },
>      /* ...repeating for a total of NUM_VIRTIO_TRANSPORTS, each of that size */
>      [VIRT_PLATFORM_BUS] =       { 0x0c000000, 0x02000000 },
> @@ -190,6 +192,23 @@ static bool cpu_type_valid(const char *cpu)
>      return false;
>  }
>
> +static void create_pvpanic_device(const VirtMachineState *vms)
> +{
> +    char *nodename;
> +    hwaddr base = vms->memmap[VIRT_PVPANIC].base;
> +    hwaddr size = vms->memmap[VIRT_PVPANIC].size;
> +
> +    sysbus_create_simple(TYPE_PVPANIC_MMIO, base, NULL);
> +
> +    nodename = g_strdup_printf("/pvpanic-mmio@%" PRIx64, base);
> +    qemu_fdt_add_subnode(vms->fdt, nodename);
> +    qemu_fdt_setprop_string(vms->fdt, nodename,
> +                            "compatible", "qemu,pvpanic-mmio");
> +    qemu_fdt_setprop_sized_cells(vms->fdt, nodename, "reg",
> +                                 2, base, 2, size);

Note that we can't take these patches into QEMU until the device
tree binding has been agreed upstream and accepted into the kernel.

> +    g_free(nodename);
> +}
> +
>  static void create_fdt(VirtMachineState *vms)
>  {
>      void *fdt = create_device_tree(&vms->fdt_size);
> @@ -1531,6 +1550,8 @@ static void machvirt_init(MachineState *machine)
>
>      create_flash(vms, sysmem, secure_sysmem ? secure_sysmem : sysmem);
>
> +    create_pvpanic_device(vms);
> +
>      create_gic(vms, pic);

As Shannon suggests, we should not be creating this device by default.

thanks
-- PMM
Peng Hao Nov. 21, 2018, 8 a.m. UTC | #4 
> >  Add pvpanic device in arm virt machine.
> >
> > Signed-off-by: Peng Hao <peng.hao2@zte.com.cn>
> > Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
> > ---
> >  default-configs/arm-softmmu.mak |  1 +
> >  hw/arm/virt.c                   | 21 +++++++++++++++++++++
> >  include/hw/arm/virt.h           |  1 +
> >  3 files changed, 23 insertions(+)
> >
> > diff --git a/default-configs/arm-softmmu.mak b/default-configs/arm-softmmu.mak
> > index 2420491..50345df 100644
> > --- a/default-configs/arm-softmmu.mak
> > +++ b/default-configs/arm-softmmu.mak
> > @@ -159,3 +159,4 @@ CONFIG_PCI_DESIGNWARE=y
> >  CONFIG_STRONGARM=y
> >  CONFIG_HIGHBANK=y
> >  CONFIG_MUSICPAL=y
> > +CONFIG_PVPANIC=y
> > diff --git a/hw/arm/virt.c b/hw/arm/virt.c
> > index 9f67782..c4f29c8 100644
[...]
> > +                            "compatible", "qemu,pvpanic-mmio");
> > +    qemu_fdt_setprop_sized_cells(vms->fdt, nodename, "reg",
> > +                                 2, base, 2, size);
> 
> Note that we can't take these patches into QEMU until the device
> tree binding has been agreed upstream and accepted into the kernel.
> 
kernel part : https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git/log/?h=char-misc-next
> > +    g_free(nodename);
> > +}
> > +
> >  static void create_fdt(VirtMachineState *vms)
> >  {
> >      void *fdt = create_device_tree(&vms->fdt_size);
> > @@ -1531,6 +1550,8 @@ static void machvirt_init(MachineState *machine)
> >
> >      create_flash(vms, sysmem, secure_sysmem ? secure_sysmem : sysmem);
> >
> > +    create_pvpanic_device(vms);
> > +
> >      create_gic(vms, pic);
> 
> As Shannon suggests, we should not be creating this device by default.
I'm  just working for that. 
Thanks.
> 
> thanks
> -- PMM
diff mbox series

Patch

diff --git a/default-configs/arm-softmmu.mak b/default-configs/arm-softmmu.mak
index 2420491..50345df 100644
--- a/default-configs/arm-softmmu.mak
+++ b/default-configs/arm-softmmu.mak
@@ -159,3 +159,4 @@  CONFIG_PCI_DESIGNWARE=y
 CONFIG_STRONGARM=y
 CONFIG_HIGHBANK=y
 CONFIG_MUSICPAL=y
+CONFIG_PVPANIC=y
diff --git a/hw/arm/virt.c b/hw/arm/virt.c
index 9f67782..c4f29c8 100644
--- a/hw/arm/virt.c
+++ b/hw/arm/virt.c
@@ -59,6 +59,7 @@ 
 #include "qapi/visitor.h"
 #include "standard-headers/linux/input.h"
 #include "hw/arm/smmuv3.h"
+#include "hw/misc/pvpanic.h"
 
 #define DEFINE_VIRT_MACHINE_LATEST(major, minor, latest) \
     static void virt_##major##_##minor##_class_init(ObjectClass *oc, \
@@ -143,6 +144,7 @@  static const MemMapEntry a15memmap[] = {
     [VIRT_GPIO] =               { 0x09030000, 0x00001000 },
     [VIRT_SECURE_UART] =        { 0x09040000, 0x00001000 },
     [VIRT_SMMU] =               { 0x09050000, 0x00020000 },
+    [VIRT_PVPANIC] =            { 0x09070000, 0x00000002 },
     [VIRT_MMIO] =               { 0x0a000000, 0x00000200 },
     /* ...repeating for a total of NUM_VIRTIO_TRANSPORTS, each of that size */
     [VIRT_PLATFORM_BUS] =       { 0x0c000000, 0x02000000 },
@@ -190,6 +192,23 @@  static bool cpu_type_valid(const char *cpu)
     return false;
 }
 
+static void create_pvpanic_device(const VirtMachineState *vms)
+{
+    char *nodename;
+    hwaddr base = vms->memmap[VIRT_PVPANIC].base;
+    hwaddr size = vms->memmap[VIRT_PVPANIC].size;
+
+    sysbus_create_simple(TYPE_PVPANIC_MMIO, base, NULL);
+
+    nodename = g_strdup_printf("/pvpanic-mmio@%" PRIx64, base);
+    qemu_fdt_add_subnode(vms->fdt, nodename);
+    qemu_fdt_setprop_string(vms->fdt, nodename,
+                            "compatible", "qemu,pvpanic-mmio");
+    qemu_fdt_setprop_sized_cells(vms->fdt, nodename, "reg",
+                                 2, base, 2, size);
+    g_free(nodename);
+}
+
 static void create_fdt(VirtMachineState *vms)
 {
     void *fdt = create_device_tree(&vms->fdt_size);
@@ -1531,6 +1550,8 @@  static void machvirt_init(MachineState *machine)
 
     create_flash(vms, sysmem, secure_sysmem ? secure_sysmem : sysmem);
 
+    create_pvpanic_device(vms);
+
     create_gic(vms, pic);
 
     fdt_add_pmu_nodes(vms);
diff --git a/include/hw/arm/virt.h b/include/hw/arm/virt.h
index 4cc57a7..937c124 100644
--- a/include/hw/arm/virt.h
+++ b/include/hw/arm/virt.h
@@ -66,6 +66,7 @@  enum {
     VIRT_GIC_REDIST,
     VIRT_GIC_REDIST2,
     VIRT_SMMU,
+    VIRT_PVPANIC,
     VIRT_UART,
     VIRT_MMIO,
     VIRT_RTC,