Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.38 as permitted sender) client-ip=23.128.96.38;
From:   Tina Zhang <tina.zhang@intel.com>
To:     Jean-Philippe Brucker <jean-philippe@linaro.org>,
        Kevin Tian <kevin.tian@intel.com>,
        Lu Baolu <baolu.lu@linux.intel.com>, joro@8bytes.org,
        will@kernel.org, Yi Liu <yi.l.liu@intel.com>
Cc:     virtualization@lists.linux-foundation.org, iommu@lists.linux.dev,
        linux-kernel@vger.kernel.org, Tina Zhang <tina.zhang@intel.com>
Subject: [RFC PATCH 3/5] iommu/io-pgtable: Introduce struct vtd_cfg
Date:   Mon,  6 Nov 2023 02:12:24 -0500
Message-Id: <20231106071226.9656-4-tina.zhang@intel.com>
In-Reply-To: <20231106071226.9656-1-tina.zhang@intel.com>
References: <20231106071226.9656-1-tina.zhang@intel.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

VT-d hardware cap/ecap information is needed for driver to generate VT-d
format IO page table. Add struct vtd_cfg to keep the info.

Signed-off-by: Tina Zhang <tina.zhang@intel.com>
---
 include/linux/io-pgtable.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/include/linux/io-pgtable.h b/include/linux/io-pgtable.h
index b2857c18f963..ae6a2e44b027 100644
--- a/include/linux/io-pgtable.h
+++ b/include/linux/io-pgtable.h
@@ -147,6 +147,11 @@ struct io_pgtable_cfg {
 			u32 n_ttbrs;
 		} apple_dart_cfg;
 
+		struct {
+			u64 cap_reg;
+			u64 ecap_reg;
+		} vtd_cfg;
+
 		struct {
 			dma_addr_t	pgd;
 		} virt;
-- 
2.39.3