From: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
To: Eric Auger <eric.auger@redhat.com>
Cc: yang.zhong@intel.com, peter.maydell@linaro.org,
kevin.tian@intel.com, tnowicki@marvell.com, mst@redhat.com,
jean-philippe.brucker@arm.com, quintela@redhat.com,
qemu-devel@nongnu.org, peterx@redhat.com, armbru@redhat.com,
bharatb.linux@gmail.com, qemu-arm@nongnu.org,
eric.auger.pro@gmail.com
Subject: Re: [PATCH for-5.0 v11 12/20] qapi: Introduce DEFINE_PROP_INTERVAL
Date: Fri, 22 Nov 2019 19:03:43 +0000 [thread overview]
Message-ID: <20191122190343.GP2785@work-vm> (raw)
In-Reply-To: <20191122182943.4656-13-eric.auger@redhat.com>
* Eric Auger (eric.auger@redhat.com) wrote:
> Introduce a new property defining a labelled interval:
> <low address>,<high address>,label.
>
> This will be used to encode reserved IOVA regions. The label
> is left undefined to ease reuse accross use cases.
>
> For instance, in virtio-iommu use case, reserved IOVA regions
> will be passed by the machine code to the virtio-iommu-pci
> device (an array of those). The label will match the
> virtio_iommu_probe_resv_mem subtype value:
> - VIRTIO_IOMMU_RESV_MEM_T_RESERVED (0)
> - VIRTIO_IOMMU_RESV_MEM_T_MSI (1)
>
> This is used to inform the virtio-iommu-pci device it should
> bypass the MSI region: 0xfee00000, 0xfeefffff, 1.
>
> Signed-off-by: Eric Auger <eric.auger@redhat.com>
> ---
> hw/core/qdev-properties.c | 90 ++++++++++++++++++++++++++++++++++++
> include/exec/memory.h | 6 +++
> include/hw/qdev-properties.h | 3 ++
> include/qemu/typedefs.h | 1 +
> 4 files changed, 100 insertions(+)
>
> diff --git a/hw/core/qdev-properties.c b/hw/core/qdev-properties.c
> index ac28890e5a..8d70f34e37 100644
> --- a/hw/core/qdev-properties.c
> +++ b/hw/core/qdev-properties.c
> @@ -13,6 +13,7 @@
> #include "qapi/visitor.h"
> #include "chardev/char.h"
> #include "qemu/uuid.h"
> +#include "qemu/cutils.h"
>
> void qdev_prop_set_after_realize(DeviceState *dev, const char *name,
> Error **errp)
> @@ -585,6 +586,95 @@ const PropertyInfo qdev_prop_macaddr = {
> .set = set_mac,
> };
>
> +/* --- Labelled Interval --- */
> +
> +/*
> + * accepted syntax versions:
> + * <low address>,<high address>,<type>
> + * where low/high addresses are uint64_t in hexa (feat. 0x prefix)
> + * and type is an unsigned integer
> + */
> +static void get_interval(Object *obj, Visitor *v, const char *name,
> + void *opaque, Error **errp)
> +{
> + DeviceState *dev = DEVICE(obj);
> + Property *prop = opaque;
> + Interval *interval = qdev_get_prop_ptr(dev, prop);
> + char buffer[64];
> + char *p = buffer;
> +
> + snprintf(buffer, sizeof(buffer), "0x%"PRIx64",0x%"PRIx64",%d",
> + interval->low, interval->high, interval->type);
> +
> + visit_type_str(v, name, &p, errp);
> +}
> +
> +static void set_interval(Object *obj, Visitor *v, const char *name,
> + void *opaque, Error **errp)
> +{
> + DeviceState *dev = DEVICE(obj);
> + Property *prop = opaque;
> + Interval *interval = qdev_get_prop_ptr(dev, prop);
> + Error *local_err = NULL;
> + unsigned int type;
> + gchar **fields;
> + uint64_t addr;
> + char *str;
> + int ret;
> +
> + if (dev->realized) {
> + qdev_prop_set_after_realize(dev, name, errp);
> + return;
> + }
> +
> + visit_type_str(v, name, &str, &local_err);
> + if (local_err) {
> + error_propagate(errp, local_err);
> + return;
> + }
> +
> + fields = g_strsplit(str, ",", 3);
> +
> + ret = qemu_strtou64(fields[0], NULL, 16, &addr);
> + if (!ret) {
> + interval->low = addr;
> + } else {
> + error_setg(errp, "Failed to decode interval low addr");
> + error_append_hint(errp,
> + "should be an address in hexa with 0x prefix\n");
> + goto out;
> + }
> +
> + ret = qemu_strtou64(fields[1], NULL, 16, &addr);
> + if (!ret) {
> + interval->high = addr;
> + } else {
> + error_setg(errp, "Failed to decode interval high addr");
> + error_append_hint(errp,
> + "should be an address in hexa with 0x prefix\n");
> + goto out;
> + }
> +
> + ret = qemu_strtoui(fields[2], NULL, 10, &type);
> + if (!ret) {
> + interval->type = type;
> + } else {
> + error_setg(errp, "Failed to decode interval type");
> + error_append_hint(errp, "should be an unsigned int in decimal\n");
> + }
> +out:
> + g_free(str);
> + g_strfreev(fields);
> + return;
> +}
> +
> +const PropertyInfo qdev_prop_interval = {
> + .name = "labelled_interval",
> + .description = "Labelled interval, example: 0xFEE00000,0xFEEFFFFF,0",
> + .get = get_interval,
> + .set = set_interval,
> +};
> +
> /* --- on/off/auto --- */
>
> const PropertyInfo qdev_prop_on_off_auto = {
> diff --git a/include/exec/memory.h b/include/exec/memory.h
> index e499dc215b..e238d1c352 100644
> --- a/include/exec/memory.h
> +++ b/include/exec/memory.h
> @@ -57,6 +57,12 @@ struct MemoryRegionMmio {
> CPUWriteMemoryFunc *write[3];
> };
>
> +struct Interval {
> + hwaddr low;
> + hwaddr high;
> + unsigned int type;
> +};
> +
Just an observation that 'Interval' is a very generic name.
We've got 'AddrRange' but that's Int128.
Dave
> typedef struct IOMMUTLBEntry IOMMUTLBEntry;
>
> /* See address_space_translate: bit 0 is read, bit 1 is write. */
> diff --git a/include/hw/qdev-properties.h b/include/hw/qdev-properties.h
> index c6a8cb5516..2ba7c8711b 100644
> --- a/include/hw/qdev-properties.h
> +++ b/include/hw/qdev-properties.h
> @@ -20,6 +20,7 @@ extern const PropertyInfo qdev_prop_chr;
> extern const PropertyInfo qdev_prop_tpm;
> extern const PropertyInfo qdev_prop_ptr;
> extern const PropertyInfo qdev_prop_macaddr;
> +extern const PropertyInfo qdev_prop_interval;
> extern const PropertyInfo qdev_prop_on_off_auto;
> extern const PropertyInfo qdev_prop_losttickpolicy;
> extern const PropertyInfo qdev_prop_blockdev_on_error;
> @@ -202,6 +203,8 @@ extern const PropertyInfo qdev_prop_pcie_link_width;
> DEFINE_PROP(_n, _s, _f, qdev_prop_drive_iothread, BlockBackend *)
> #define DEFINE_PROP_MACADDR(_n, _s, _f) \
> DEFINE_PROP(_n, _s, _f, qdev_prop_macaddr, MACAddr)
> +#define DEFINE_PROP_INTERVAL(_n, _s, _f) \
> + DEFINE_PROP(_n, _s, _f, qdev_prop_interval, Interval)
> #define DEFINE_PROP_ON_OFF_AUTO(_n, _s, _f, _d) \
> DEFINE_PROP_SIGNED(_n, _s, _f, _d, qdev_prop_on_off_auto, OnOffAuto)
> #define DEFINE_PROP_LOSTTICKPOLICY(_n, _s, _f, _d) \
> diff --git a/include/qemu/typedefs.h b/include/qemu/typedefs.h
> index 375770a80f..a827c9a3fe 100644
> --- a/include/qemu/typedefs.h
> +++ b/include/qemu/typedefs.h
> @@ -58,6 +58,7 @@ typedef struct ISABus ISABus;
> typedef struct ISADevice ISADevice;
> typedef struct IsaDma IsaDma;
> typedef struct MACAddr MACAddr;
> +typedef struct Interval Interval;
> typedef struct MachineClass MachineClass;
> typedef struct MachineState MachineState;
> typedef struct MemoryListener MemoryListener;
> --
> 2.20.1
>
--
Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK
next prev parent reply other threads:[~2019-11-22 19:05 UTC|newest]
Thread overview: 89+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-22 18:29 [PATCH for-5.0 v11 00/20] VIRTIO-IOMMU device Eric Auger
2019-11-22 18:29 ` [PATCH for-5.0 v11 01/20] migration: Support QLIST migration Eric Auger
2019-11-27 11:46 ` Dr. David Alan Gilbert
2020-01-08 13:19 ` Juan Quintela
2020-01-08 13:40 ` Auger Eric
2020-01-08 13:51 ` Juan Quintela
2020-01-08 14:02 ` Auger Eric
2019-11-22 18:29 ` [PATCH for-5.0 v11 02/20] virtio-iommu: Add skeleton Eric Auger
2019-12-10 16:31 ` Jean-Philippe Brucker
2019-12-19 10:31 ` Auger Eric
2019-11-22 18:29 ` [PATCH for-5.0 v11 03/20] virtio-iommu: Decode the command payload Eric Auger
2019-12-10 16:32 ` Jean-Philippe Brucker
2019-12-10 19:14 ` Peter Xu
2019-11-22 18:29 ` [PATCH for-5.0 v11 04/20] virtio-iommu: Add the iommu regions Eric Auger
2019-12-10 16:34 ` Jean-Philippe Brucker
2019-12-19 18:11 ` Auger Eric
2019-12-10 19:18 ` Peter Xu
2019-11-22 18:29 ` [PATCH for-5.0 v11 05/20] virtio-iommu: Endpoint and domains structs and helpers Eric Auger
2019-12-10 16:37 ` Jean-Philippe Brucker
2019-12-19 18:31 ` Auger Eric
2019-12-20 17:00 ` Jean-Philippe Brucker
2019-12-23 9:11 ` Auger Eric
2019-11-22 18:29 ` [PATCH for-5.0 v11 06/20] virtio-iommu: Implement attach/detach command Eric Auger
2019-12-10 16:41 ` Jean-Philippe Brucker
2019-12-23 9:14 ` Auger Eric
2019-11-22 18:29 ` [PATCH for-5.0 v11 07/20] virtio-iommu: Implement map/unmap Eric Auger
2019-12-10 16:43 ` Jean-Philippe Brucker
2019-12-23 9:42 ` Auger Eric
2019-11-22 18:29 ` [PATCH for-5.0 v11 08/20] virtio-iommu: Implement translate Eric Auger
2019-12-10 16:43 ` Jean-Philippe Brucker
2019-12-10 19:33 ` Peter Xu
2019-12-19 10:30 ` Auger Eric
2019-12-19 13:33 ` Peter Xu
2019-12-19 14:38 ` Auger Eric
2019-12-19 14:49 ` Peter Xu
2019-12-19 15:09 ` Auger Eric
2019-12-20 16:26 ` Jean-Philippe Brucker
2019-12-20 16:51 ` Peter Xu
2020-01-06 17:06 ` Jean-Philippe Brucker
2020-01-06 17:58 ` Peter Xu
2020-01-07 10:10 ` Jean-Philippe Brucker
2020-01-08 16:55 ` Auger Eric
2020-01-09 8:47 ` Jean-Philippe Brucker
2020-01-09 8:58 ` Auger Eric
2020-01-09 10:40 ` Jean-Philippe Brucker
2020-01-09 11:01 ` Auger Eric
2020-01-09 11:15 ` Jean-Philippe Brucker
2020-01-09 11:32 ` Auger Eric
2019-11-22 18:29 ` [PATCH for-5.0 v11 09/20] virtio-iommu: Implement fault reporting Eric Auger
2019-12-10 16:44 ` Jean-Philippe Brucker
2019-11-22 18:29 ` [PATCH for-5.0 v11 10/20] virtio-iommu-pci: Add virtio iommu pci support Eric Auger
2019-12-10 16:44 ` Jean-Philippe Brucker
2019-11-22 18:29 ` [PATCH for-5.0 v11 11/20] hw/arm/virt: Add the virtio-iommu device tree mappings Eric Auger
2019-12-10 16:45 ` Jean-Philippe Brucker
2019-11-22 18:29 ` [PATCH for-5.0 v11 12/20] qapi: Introduce DEFINE_PROP_INTERVAL Eric Auger
2019-11-22 19:03 ` Dr. David Alan Gilbert [this message]
2019-11-25 13:12 ` Auger Eric
2019-12-12 12:17 ` Markus Armbruster
2019-12-12 15:13 ` Auger Eric
2019-12-13 10:03 ` Markus Armbruster
2019-11-22 18:29 ` [PATCH for-5.0 v11 13/20] virtio-iommu: Implement probe request Eric Auger
2019-12-10 16:46 ` Jean-Philippe Brucker
2019-12-10 19:36 ` Peter Xu
2019-11-22 18:29 ` [PATCH for-5.0 v11 14/20] virtio-iommu: Handle reserved regions in the translation process Eric Auger
2019-12-10 16:46 ` Jean-Philippe Brucker
2019-12-10 19:39 ` Peter Xu
2019-11-22 18:29 ` [PATCH for-5.0 v11 15/20] virtio-iommu-pci: Add array of Interval properties Eric Auger
2019-12-10 16:47 ` Jean-Philippe Brucker
2019-11-22 18:29 ` [PATCH for-5.0 v11 16/20] hw/arm/virt-acpi-build: Introduce fill_iort_idmap helper Eric Auger
2019-12-10 16:47 ` Jean-Philippe Brucker
2019-11-22 18:29 ` [PATCH for-5.0 v11 17/20] hw/arm/virt-acpi-build: Add virtio-iommu node in IORT table Eric Auger
2019-12-10 16:48 ` Jean-Philippe Brucker
2019-11-22 18:29 ` [PATCH for-5.0 v11 18/20] virtio-iommu: Support migration Eric Auger
2019-11-27 12:06 ` Dr. David Alan Gilbert
2019-12-10 16:50 ` Jean-Philippe Brucker
2019-12-19 11:03 ` Auger Eric
2019-12-10 20:01 ` Peter Xu
2019-12-24 7:39 ` Auger Eric
2019-11-22 18:29 ` [PATCH for-5.0 v11 19/20] pc: Add support for virtio-iommu-pci Eric Auger
2019-12-10 16:50 ` Jean-Philippe Brucker
2019-12-24 7:39 ` Auger Eric
2020-01-09 12:02 ` Michael S. Tsirkin
2020-01-09 13:34 ` Auger Eric
2019-11-22 18:29 ` [PATCH for-5.0 v11 20/20] tests: Add virtio-iommu test Eric Auger
2019-11-22 21:56 ` [PATCH for-5.0 v11 00/20] VIRTIO-IOMMU device no-reply
2019-12-11 16:40 ` Michael S. Tsirkin
2019-12-11 16:48 ` Auger Eric
2019-12-11 20:40 ` Michael S. Tsirkin
2019-12-12 15:05 ` Auger Eric
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