From: Nicolin Chen <nicolinc@nvidia.com>
To: <will@kernel.org>, <robin.murphy@arm.com>
Cc: <joro@8bytes.org>, <jgg@nvidia.com>, <thierry.reding@gmail.com>,
<vdumpa@nvidia.com>, <jonathanh@nvidia.com>,
<linux-kernel@vger.kernel.org>, <iommu@lists.linux.dev>,
<linux-arm-kernel@lists.infradead.org>,
<linux-tegra@vger.kernel.org>
Subject: Re: [PATCH v5 1/6] iommu/arm-smmu-v3: Add CS_NONE quirk
Date: Fri, 19 Apr 2024 10:12:44 -0700 [thread overview]
Message-ID: <ZiKmDCAnAc0sRT7K@Asurada-Nvidia> (raw)
In-Reply-To: <10a39a51cae4de9ef47580f0c4439fb6c5373588.1712977210.git.nicolinc@nvidia.com>
On Fri, Apr 12, 2024 at 08:43:49PM -0700, Nicolin Chen wrote:
> The CMDQV extension in NVIDIA Tegra241 SoC only supports CS_NONE in the
> CS field of CMD_SYNC. Add a quirk flag to accommodate that.
>
> Signed-off-by: Nicolin Chen <nicolinc@nvidia.com>
> ---
> drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 10 ++++++++--
> drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h | 4 ++++
> 2 files changed, 12 insertions(+), 2 deletions(-)
> @@ -707,7 +712,8 @@ static int __arm_smmu_cmdq_poll_until_consumed(struct arm_smmu_device *smmu,
> static int arm_smmu_cmdq_poll_until_sync(struct arm_smmu_device *smmu,
> struct arm_smmu_ll_queue *llq)
> {
> - if (smmu->options & ARM_SMMU_OPT_MSIPOLL)
> + if (smmu->options & ARM_SMMU_OPT_MSIPOLL &&
> + !(cmdq->q.quirks & CMDQ_QUIRK_SYNC_CS_NONE_ONLY))
> return __arm_smmu_cmdq_poll_until_msi(smmu, llq);
Realized that I should have moved the PATCH-4 to the top for the
cmdq pointer here. Otherwise it breaks git-bisect... Will fix in
the next version.
Nicolin
next prev parent reply other threads:[~2024-04-19 17:13 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-13 3:43 [PATCH v5 0/6] Add Tegra241 (Grace) CMDQV Support (part 1/2) Nicolin Chen
2024-04-13 3:43 ` [PATCH v5 1/6] iommu/arm-smmu-v3: Add CS_NONE quirk Nicolin Chen
2024-04-19 17:12 ` Nicolin Chen [this message]
2024-04-13 3:43 ` [PATCH v5 2/6] iommu/arm-smmu-v3: Make arm_smmu_cmdq_init reusable Nicolin Chen
2024-04-13 3:43 ` [PATCH v5 3/6] iommu/arm-smmu-v3: Make __arm_smmu_cmdq_skip_err reusable Nicolin Chen
2024-04-13 3:43 ` [PATCH v5 4/6] iommu/arm-smmu-v3: Pass in cmdq pointer to arm_smmu_cmdq_issue_cmdlist() Nicolin Chen
2024-04-13 3:43 ` [PATCH v5 5/6] iommu/arm-smmu-v3: Add in-kernel support for NVIDIA Tegra241 (Grace) CMDQV Nicolin Chen
2024-04-13 3:43 ` [PATCH v5 6/6] iommu/tegra241-cmdqv: Limit CMDs for guest owned VINTF Nicolin Chen
2024-04-17 15:12 ` Shameerali Kolothum Thodi
2024-04-17 16:04 ` Nicolin Chen
2024-04-15 17:14 ` [PATCH v5 0/6] Add Tegra241 (Grace) CMDQV Support (part 1/2) Jason Gunthorpe
2024-04-17 8:01 ` Shameerali Kolothum Thodi
2024-04-17 9:45 ` Shameerali Kolothum Thodi
2024-04-17 12:29 ` Jason Gunthorpe
2024-04-17 12:24 ` Jason Gunthorpe
2024-04-17 15:13 ` Shameerali Kolothum Thodi
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