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From: Auger Eric <eric.auger@redhat.com>
To: Zenghui Yu <yuzenghui@huawei.com>
Cc: kvm@vger.kernel.org, maz@kernel.org, qemu-devel@nongnu.org,
	qemu-arm@nongnu.org, andre.przywara@arm.com, thuth@redhat.com,
	kvmarm@lists.cs.columbia.edu, eric.auger.pro@gmail.com
Subject: Re: [kvm-unit-tests PATCH v7 08/13] arm/arm64: ITS: Device and collection Initialization
Date: Wed, 25 Mar 2020 22:20:43 +0100
Message-ID: <c5ce7101-9ea3-8b04-7ec0-cb27dfbdc116@redhat.com> (raw)
In-Reply-To: <63f3d8aa-c1e3-f40f-32a1-fb6d22e70541@huawei.com>

Hi Zenghui,

On 3/25/20 9:10 AM, Zenghui Yu wrote:
> Hi Eric,
> 
> On 2020/3/20 17:24, Eric Auger wrote:
>> Introduce an helper functions to register
>> - a new device, characterized by its device id and the
>>    max number of event IDs that dimension its ITT (Interrupt
>>    Translation Table).  The function allocates the ITT.
>>
>> - a new collection, characterized by its ID and the
>>    target processing engine (PE).
>>
>> Signed-off-by: Eric Auger <eric.auger@redhat.com>
>>
>> ---
>>
>> v3 -> v4:
>> - remove unused its_baser variable from its_create_device()
>> - use get_order()
>> - device->itt becomes a GVA instead of GPA
>>
>> v2 -> v3:
>> - s/report_abort/assert
>>
>> v1 -> v2:
>> - s/nb_/nr_
>> ---
>>   lib/arm64/asm/gic-v3-its.h | 19 +++++++++++++++++++
>>   lib/arm64/gic-v3-its.c     | 38 ++++++++++++++++++++++++++++++++++++++
>>   2 files changed, 57 insertions(+)
>>
>> diff --git a/lib/arm64/asm/gic-v3-its.h b/lib/arm64/asm/gic-v3-its.h
>> index 4683011..adcb642 100644
>> --- a/lib/arm64/asm/gic-v3-its.h
>> +++ b/lib/arm64/asm/gic-v3-its.h
>> @@ -31,6 +31,19 @@ struct its_baser {
>>   };
>>     #define GITS_BASER_NR_REGS        8
>> +#define GITS_MAX_DEVICES        8
>> +#define GITS_MAX_COLLECTIONS        8
>> +
>> +struct its_device {
>> +    u32 device_id;    /* device ID */
>> +    u32 nr_ites;    /* Max Interrupt Translation Entries */
>> +    void *itt;    /* Interrupt Translation Table GVA */
>> +};
>> +
>> +struct its_collection {
>> +    u64 target_address;
>> +    u16 col_id;
>> +};
>>     struct its_data {
>>       void *base;
>> @@ -39,6 +52,10 @@ struct its_data {
>>       struct its_baser coll_baser;
>>       struct its_cmd_block *cmd_base;
>>       struct its_cmd_block *cmd_write;
>> +    struct its_device devices[GITS_MAX_DEVICES];
>> +    u32 nr_devices;        /* Allocated Devices */
>> +    struct its_collection collections[GITS_MAX_COLLECTIONS];
>> +    u32 nr_collections;    /* Allocated Collections */
>>   };
>>     extern struct its_data its_data;
>> @@ -93,5 +110,7 @@ extern void its_parse_typer(void);
>>   extern void its_init(void);
>>   extern int its_baser_lookup(int i, struct its_baser *baser);
>>   extern void its_enable_defaults(void);
>> +extern struct its_device *its_create_device(u32 dev_id, int nr_ites);
>> +extern struct its_collection *its_create_collection(u32 col_id, u32
>> target_pe);
> 
> Maybe use 'u16 col_id'?
fair enough. At this point, not sure this is worth a respin though ;-)
> 
> Besides,
> Reviewed-by: Zenghui Yu <yuzenghui@huawei.com>
Thanks!

Eric




> 
> 
> Thanks
> 
> 

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Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-20  9:24 [kvm-unit-tests PATCH v7 00/13] arm/arm64: Add ITS tests Eric Auger
2020-03-20  9:24 ` [kvm-unit-tests PATCH v7 01/13] libcflat: Add other size defines Eric Auger
2020-03-20  9:24 ` [kvm-unit-tests PATCH v7 02/13] page_alloc: Introduce get_order() Eric Auger
2020-03-20  9:24 ` [kvm-unit-tests PATCH v7 03/13] arm/arm64: gic: Introduce setup_irq() helper Eric Auger
2020-03-20  9:24 ` [kvm-unit-tests PATCH v7 04/13] arm/arm64: gicv3: Add some re-distributor defines Eric Auger
2020-03-20  9:24 ` [kvm-unit-tests PATCH v7 05/13] arm/arm64: gicv3: Set the LPI config and pending tables Eric Auger
2020-03-20  9:24 ` [kvm-unit-tests PATCH v7 06/13] arm/arm64: ITS: Introspection tests Eric Auger
2020-03-30  8:30   ` Zenghui Yu
2020-03-30  8:46     ` Auger Eric
2020-03-30  9:11       ` Andrew Jones
2020-03-30  9:56         ` Auger Eric
2020-03-30 10:19           ` Andrew Jones
2020-03-30 10:24             ` Auger Eric
2020-03-30 12:20         ` Zenghui Yu
2020-03-20  9:24 ` [kvm-unit-tests PATCH v7 07/13] arm/arm64: ITS: its_enable_defaults Eric Auger
2020-03-20  9:24 ` [kvm-unit-tests PATCH v7 08/13] arm/arm64: ITS: Device and collection Initialization Eric Auger
2020-03-25  8:10   ` Zenghui Yu
2020-03-25 21:20     ` Auger Eric [this message]
2020-03-30  9:13       ` Andrew Jones
2020-03-20  9:24 ` [kvm-unit-tests PATCH v7 09/13] arm/arm64: ITS: Commands Eric Auger
2020-03-30  9:22   ` Zenghui Yu
2020-03-30  9:57     ` Auger Eric
2020-03-20  9:24 ` [kvm-unit-tests PATCH v7 10/13] arm/arm64: ITS: INT functional tests Eric Auger
2020-03-30 10:43   ` Zenghui Yu
2020-04-02  8:50     ` Auger Eric
2020-04-02 12:40       ` Zenghui Yu
2020-04-02 14:41         ` Andrew Jones
2020-03-20  9:24 ` [kvm-unit-tests PATCH v7 11/13] arm/run: Allow Migration tests Eric Auger
2020-03-20  9:24 ` [kvm-unit-tests PATCH v7 12/13] arm/arm64: ITS: migration tests Eric Auger
2020-03-30 10:55   ` Zenghui Yu
2020-03-20  9:24 ` [kvm-unit-tests PATCH v7 13/13] arm/arm64: ITS: pending table migration test Eric Auger
2020-03-30 12:06   ` Zenghui Yu
2020-03-30 12:38     ` Auger Eric
2020-03-30 13:17       ` Zenghui Yu

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