From: Zenghui Yu <yuzenghui@huawei.com>
To: Eric Auger <eric.auger@redhat.com>, <eric.auger.pro@gmail.com>,
<maz@kernel.org>, <kvmarm@lists.cs.columbia.edu>,
<kvm@vger.kernel.org>, <qemu-devel@nongnu.org>,
<qemu-arm@nongnu.org>
Cc: <drjones@redhat.com>, <andre.przywara@arm.com>,
<peter.maydell@linaro.org>, <alexandru.elisei@arm.com>,
<thuth@redhat.com>
Subject: Re: [kvm-unit-tests PATCH v3 08/14] arm/arm64: ITS: its_enable_defaults
Date: Fri, 7 Feb 2020 11:20:38 +0800 [thread overview]
Message-ID: <10d0630f-1464-b12a-5ad5-ee617eaa5cca@huawei.com> (raw)
In-Reply-To: <20200128103459.19413-9-eric.auger@redhat.com>
Hi Eric,
On 2020/1/28 18:34, Eric Auger wrote:
> its_enable_defaults() is the top init function that allocates the
> command queue and all the requested tables (device, collection,
> lpi config and pending tables), enable LPIs at distributor level
> and ITS level.
>
> gicv3_enable_defaults must be called before.
>
> Signed-off-by: Eric Auger <eric.auger@redhat.com>
>
> ---
>
> v2 -> v3:
> - introduce its_setup_baser in this patch
> - squash "arm/arm64: ITS: Init the command queue" in this patch.
> ---
> lib/arm/asm/gic-v3-its.h | 8 ++++
> lib/arm/gic-v3-its.c | 89 ++++++++++++++++++++++++++++++++++++++++
> 2 files changed, 97 insertions(+)
>
> diff --git a/lib/arm/asm/gic-v3-its.h b/lib/arm/asm/gic-v3-its.h
> index 815c515..fe73c04 100644
> --- a/lib/arm/asm/gic-v3-its.h
> +++ b/lib/arm/asm/gic-v3-its.h
> @@ -36,6 +36,8 @@ struct its_data {
> void *base;
> struct its_typer typer;
> struct its_baser baser[GITS_BASER_NR_REGS];
> + struct its_cmd_block *cmd_base;
> + struct its_cmd_block *cmd_write;
> };
>
> extern struct its_data its_data;
> @@ -88,10 +90,16 @@ extern struct its_data its_data;
> #define GITS_BASER_TYPE_DEVICE 1
> #define GITS_BASER_TYPE_COLLECTION 4
>
> +
> +struct its_cmd_block {
> + u64 raw_cmd[4];
> +};
> +
> extern void its_parse_typer(void);
> extern void its_init(void);
> extern int its_parse_baser(int i, struct its_baser *baser);
> extern struct its_baser *its_lookup_baser(int type);
> +extern void its_enable_defaults(void);
>
> #else /* __arm__ */
>
> diff --git a/lib/arm/gic-v3-its.c b/lib/arm/gic-v3-its.c
> index 2c0ce13..d1e7e52 100644
> --- a/lib/arm/gic-v3-its.c
> +++ b/lib/arm/gic-v3-its.c
> @@ -86,3 +86,92 @@ void its_init(void)
> its_parse_baser(i, &its_data.baser[i]);
> }
>
> +static void its_setup_baser(int i, struct its_baser *baser)
> +{
> + unsigned long n = (baser->nr_pages * baser->psz) >> PAGE_SHIFT;
> + unsigned long order = is_power_of_2(n) ? fls(n) : fls(n) + 1;
> + u64 val;
> +
> + baser->table_addr = (u64)virt_to_phys(alloc_pages(order));
> +
> + val = ((u64)baser->table_addr |
> + ((u64)baser->type << GITS_BASER_TYPE_SHIFT) |
> + ((u64)(baser->esz - 1) << GITS_BASER_ENTRY_SIZE_SHIFT) |
> + ((baser->nr_pages - 1) << GITS_BASER_PAGES_SHIFT) |
> + (u64)baser->indirect << 62 |
I haven't seen the 'nr_pages' and 'indirect' are programmed anywhere
except in its_parse_baser(). It looks like they're treated as RO (but
they shouldn't) and I now don't think it makes sense to parse them in
its_parse_baser(), in patch#5.
> + (u64)baser->valid << 63);
> +
> + switch (baser->psz) {
> + case SZ_4K:
> + val |= GITS_BASER_PAGE_SIZE_4K;
> + break;
> + case SZ_16K:
> + val |= GITS_BASER_PAGE_SIZE_16K;
> + break;
> + case SZ_64K:
> + val |= GITS_BASER_PAGE_SIZE_64K;
> + break;
> + }
> +
> + writeq(val, gicv3_its_base() + GITS_BASER + i * 8);
> +}
> +
> +/**
> + * init_cmd_queue: Allocate the command queue and initialize
> + * CBASER, CREADR, CWRITER
no 'CREADR'.
Thanks,
Zenghui
next prev parent reply other threads:[~2020-02-07 3:20 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-28 10:34 [kvm-unit-tests PATCH v3 00/14] arm/arm64: Add ITS tests Eric Auger
2020-01-28 10:34 ` [kvm-unit-tests PATCH v3 01/14] libcflat: Add other size defines Eric Auger
2020-01-28 10:34 ` [kvm-unit-tests PATCH v3 02/14] arm: gic: Provide per-IRQ helper functions Eric Auger
2020-01-28 10:34 ` [kvm-unit-tests PATCH v3 03/14] arm/arm64: gic: Introduce setup_irq() helper Eric Auger
2020-01-28 10:34 ` [kvm-unit-tests PATCH v3 04/14] arm/arm64: gicv3: Add some re-distributor defines Eric Auger
2020-02-06 14:35 ` Zenghui Yu
2020-01-28 10:34 ` [kvm-unit-tests PATCH v3 05/14] arm/arm64: ITS: Introspection tests Eric Auger
2020-02-06 15:12 ` Zenghui Yu
2020-02-07 10:19 ` Andrew Jones
2020-03-04 14:20 ` Auger Eric
2020-01-28 10:34 ` [kvm-unit-tests PATCH v3 06/14] arm/arm64: gicv3: Set the LPI config and pending tables Eric Auger
2020-02-07 2:12 ` Zenghui Yu
2020-03-05 19:40 ` Auger Eric
2020-02-07 12:11 ` Andrew Jones
2020-01-28 10:34 ` [kvm-unit-tests PATCH v3 07/14] arm/arm64: gicv3: Enable/Disable LPIs at re-distributor level Eric Auger
2020-02-07 12:14 ` Andrew Jones
2020-02-07 12:19 ` Andrew Jones
2020-01-28 10:34 ` [kvm-unit-tests PATCH v3 08/14] arm/arm64: ITS: its_enable_defaults Eric Auger
2020-02-07 3:20 ` Zenghui Yu [this message]
2020-03-04 14:26 ` Auger Eric
2020-03-05 6:30 ` Zenghui Yu
2020-02-07 12:41 ` Andrew Jones
2020-03-05 17:59 ` Auger Eric
2020-01-28 10:34 ` [kvm-unit-tests PATCH v3 09/14] arm/arm64: ITS: Device and collection Initialization Eric Auger
2020-02-07 5:41 ` Zenghui Yu
2020-03-05 19:42 ` Auger Eric
2020-02-07 12:51 ` Andrew Jones
2020-03-06 8:47 ` Auger Eric
2020-01-28 10:34 ` [kvm-unit-tests PATCH v3 10/14] arm/arm64: ITS: commands Eric Auger
2020-02-07 13:37 ` Andrew Jones
2020-03-06 9:13 ` Auger Eric
2020-01-28 10:34 ` [kvm-unit-tests PATCH v3 11/14] arm/arm64: ITS: INT functional tests Eric Auger
2020-02-07 13:15 ` Andrew Jones
2020-03-06 12:55 ` Auger Eric
2020-03-06 13:29 ` Andrew Jones
2020-03-06 13:40 ` Auger Eric
2020-01-28 10:34 ` [kvm-unit-tests PATCH v3 12/14] arm/run: Allow Migration tests Eric Auger
2020-01-29 8:07 ` Thomas Huth
2020-01-29 9:29 ` Auger Eric
2020-01-28 10:34 ` [kvm-unit-tests PATCH v3 13/14] arm/arm64: ITS: migration tests Eric Auger
2020-02-07 13:49 ` Andrew Jones
2020-03-06 13:06 ` Auger Eric
2020-01-28 10:34 ` [kvm-unit-tests PATCH v3 14/14] arm/arm64: ITS: pending table migration test Eric Auger
2020-02-07 14:06 ` Andrew Jones
2020-03-06 13:21 ` Auger Eric
2020-03-06 13:36 ` Andrew Jones
2020-03-06 13:41 ` Auger Eric
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