On Wed, Jan 22, 2025 at 6:49 PM Ethan Chen via <qemu-devel@nongnu.org> wrote: > > The entire valid transaction must fit within a single IOPMP entry. > However, during IOMMU translation, the transaction size is not > available. This structure defines the transaction information required > by the IOPMP. > > Signed-off-by: Ethan Chen <etha...@andestech.com>
Reviewed-by: Alistair Francis <alistair.fran...@wdc.com> Alistair > --- > include/hw/misc/riscv_iopmp_txn_info.h | 38 ++++++++++++++++++++++++++ > 1 file changed, 38 insertions(+) > create mode 100644 include/hw/misc/riscv_iopmp_txn_info.h > > diff --git a/include/hw/misc/riscv_iopmp_txn_info.h > b/include/hw/misc/riscv_iopmp_txn_info.h > new file mode 100644 > index 0000000000..98bd26b68b > --- /dev/null > +++ b/include/hw/misc/riscv_iopmp_txn_info.h > @@ -0,0 +1,38 @@ > +/* > + * QEMU RISC-V IOPMP transaction information > + * > + * The transaction information structure provides the complete transaction > + * length to the IOPMP device > + * > + * Copyright (c) 2023-2025 Andes Tech. Corp. > + * > + * SPDX-License-Identifier: GPL-2.0-or-later > + * > + * This program is free software; you can redistribute it and/or modify it > + * under the terms and conditions of the GNU General Public License, > + * version 2 or later, as published by the Free Software Foundation. > + * > + * This program is distributed in the hope it will be useful, but WITHOUT > + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or > + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for > + * more details. > + * > + * You should have received a copy of the GNU General Public License along > with > + * this program. If not, see <http://www.gnu.org/licenses/>. > + */ > + > +#ifndef RISCV_IOPMP_TXN_INFO_H > +#define RISCV_IOPMP_TXN_INFO_H > + > +typedef struct { > + /* The id of requestor */ > + uint32_t rrid:16; > + /* The start address of transaction */ > + uint64_t start_addr; > + /* The end address of transaction */ > + uint64_t end_addr; > + /* The stage of cascading IOPMP */ > + uint32_t stage; > +} riscv_iopmp_txn_info; > + > +#endif > -- > 2.34.1 > >
