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Re: [PATCH v4 2/4] Add RISC-V IOPMP support
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From: |
Ethan Chen |
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Subject: |
Re: [PATCH v4 2/4] Add RISC-V IOPMP support |
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Date: |
Wed, 27 Dec 2023 10:26:15 +0800 |
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User-agent: |
Mutt/2.1.4 (2021-12-11) |
On Mon, Dec 18, 2023 at 02:04:06PM +1000, Alistair Francis wrote:
> On Wed, Nov 22, 2023 at 3:35 PM Ethan Chen via <qemu-devel@nongnu.org> wrote:
> >
> > Support specification Version 1.0.0-draft4 rapid-k model.
> > The specification url:
> > https://github.com/riscv-non-isa/iopmp-spec/blob/main/riscv_iopmp_specification.pdf
> >
> > IOPMP check memory access from deivce is valid or not. This implementation
> > uses
> > IOMMU to change address space that device access. There are three possible
> > results of an access: valid, blocked, and stalled.
> >
> > If an access is valid, target address spcae is downstream_as(system_memory).
> > If an access is blocked, it will go to blocked_io_as. The operation of
> > blocked_io_as could be a bus error, a decode error, or it can respond a
> > success
> > with fabricated data depending on IOPMP ERRREACT register value.
> > If an access is stalled, it will go to stall_io_as. The operation of
> > stall_io_as
> > does nothing but return a stall result to source device. Source device
> > should
> > retry the access if it gets a stall result.
> >
> > IOPMP implementation is rely on bus signal. For example IOPMP on AXI bus
> > checks
> > the AXI burst transaction. A streamsink to receive general
> > transaction_info(sid,
> > start address, end address) is added to IOPMP.
> >
> > If the source device support transaction_info, it can first send a
> > transaction_info to IOPMP streamsink then do the memory access. IOPMP will
> > do
> > additional partially hit check with transaction info.
> > If the source device does not support transaction info. IOPMP will not check
> > partially hit.
> >
> > Signed-off-by: Ethan Chen <ethan84@andestech.com>
> > ---
> > hw/misc/Kconfig | 4 +
> > hw/misc/meson.build | 1 +
> > hw/misc/riscv_iopmp.c | 966 ++++++++++++++++++
> > include/hw/misc/riscv_iopmp.h | 341 +++++++
> > .../hw/misc/riscv_iopmp_transaction_info.h | 28 +
> > 5 files changed, 1340 insertions(+)
> > create mode 100644 hw/misc/riscv_iopmp.c
> > create mode 100644 include/hw/misc/riscv_iopmp.h
> > create mode 100644 include/hw/misc/riscv_iopmp_transaction_info.h
> >
> > diff --git a/hw/misc/Kconfig b/hw/misc/Kconfig
> > index cc8a8c1418..953569e682 100644
> > --- a/hw/misc/Kconfig
> > +++ b/hw/misc/Kconfig
> > @@ -200,4 +200,8 @@ config IOSB
> > config XLNX_VERSAL_TRNG
> > bool
> >
> > +config RISCV_IOPMP
> > + bool
> > + select STREAM
> > +
> > source macio/Kconfig
> > diff --git a/hw/misc/meson.build b/hw/misc/meson.build
> > index 36c20d5637..86b81e1690 100644
> > --- a/hw/misc/meson.build
> > +++ b/hw/misc/meson.build
> > @@ -35,6 +35,7 @@ system_ss.add(when: 'CONFIG_SIFIVE_E_PRCI', if_true:
> > files('sifive_e_prci.c'))
> > system_ss.add(when: 'CONFIG_SIFIVE_E_AON', if_true:
> > files('sifive_e_aon.c'))
> > system_ss.add(when: 'CONFIG_SIFIVE_U_OTP', if_true:
> > files('sifive_u_otp.c'))
> > system_ss.add(when: 'CONFIG_SIFIVE_U_PRCI', if_true:
> > files('sifive_u_prci.c'))
> > +specific_ss.add(when: 'CONFIG_RISCV_IOPMP', if_true:
> > files('riscv_iopmp.c'))
> >
> > subdir('macio')
> >
> > diff --git a/hw/misc/riscv_iopmp.c b/hw/misc/riscv_iopmp.c
> > new file mode 100644
> > index 0000000000..098a3b81fd
> > --- /dev/null
> > +++ b/hw/misc/riscv_iopmp.c
> > @@ -0,0 +1,966 @@
> > +/*
> > + * QEMU RISC-V IOPMP (Input Output Physical Memory Protection)
> > + *
> > + * Copyright (c) 2023 Andes Tech. Corp.
> > + *
> > + * 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/>.
> > + */
> > +
> > +#include "qemu/osdep.h"
> > +#include "qemu/log.h"
> > +#include "qapi/error.h"
> > +#include "trace.h"
> > +#include "exec/exec-all.h"
> > +#include "exec/address-spaces.h"
> > +#include "hw/qdev-properties.h"
> > +#include "hw/sysbus.h"
> > +#include "hw/misc/riscv_iopmp.h"
> > +#include "memory.h"
> > +#include "hw/irq.h"
> > +
> > +#define TYPE_IOPMP_IOMMU_MEMORY_REGION "iopmp-iommu-memory-region"
> > +#define TYPE_IOPMP_TRASACTION_INFO_SINK "iopmp_transaction_info_sink"
> > +
> > +DECLARE_INSTANCE_CHECKER(Iopmp_StreamSink, IOPMP_TRASACTION_INFO_SINK,
> > + TYPE_IOPMP_TRASACTION_INFO_SINK)
> > +#define LOGGE(x...) qemu_log_mask(LOG_GUEST_ERROR, x)
> > +#define xLOG(x...)
> > +#define yLOG(x...) qemu_log(x)
> > +#ifdef DEBUG_RISCV_IOPMP
> > + #define LOG(x...) yLOG(x)
> > +#else
> > + #define LOG(x...) xLOG(x)
> > +#endif
>
> It looks like you missed some of my previous comments. Do you mind
> checking them again
>
> Alistair
Thanks for your comments. I have checked them and modified according
your suggestion.
Ethan Chen
>
> > +
> > +#define MEMTX_IOPMP_STALL (1 << 3)
> > +
> > +
> > +static void iopmp_decode_napot(target_ulong a, target_ulong *sa,
> > + target_ulong *ea)
> > +{
> > + /*
> > + * aaaa...aaa0 8-byte NAPOT range
> > + * aaaa...aa01 16-byte NAPOT range
> > + * aaaa...a011 32-byte NAPOT range
> > + * ...
> > + * aa01...1111 2^XLEN-byte NAPOT range
> > + * a011...1111 2^(XLEN+1)-byte NAPOT range
> > + * 0111...1111 2^(XLEN+2)-byte NAPOT range
> > + * 1111...1111 Reserved
> > + */
> > +
> > + a = (a << 2) | 0x3;
> > + *sa = a & (a + 1);
> > + *ea = a | (a + 1);
> > +}
> > +
> > +static void iopmp_update_rule(IopmpState *s, uint32_t entry_index)
> > +{
> > + uint8_t this_cfg = s->regs.entry[entry_index].cfg_reg;
> > + target_ulong this_addr = s->regs.entry[entry_index].addr_reg;
> > + target_ulong prev_addr = 0u;
> > + target_ulong sa = 0u;
> > + target_ulong ea = 0u;
> > +
> > + if (entry_index >= 1u) {
> > + prev_addr = s->regs.entry[entry_index - 1].addr_reg;
> > + }
> > +
> > + switch (iopmp_get_field(this_cfg, ENTRY_CFG_A)) {
> > + case IOPMP_AMATCH_OFF:
> > + sa = 0u;
> > + ea = -1;
> > + break;
> > +
> > + case IOPMP_AMATCH_TOR:
> > + sa = (prev_addr) << 2; /* shift up from [xx:0] to [xx+2:2] */
> > + ea = ((this_addr) << 2) - 1u;
> > + if (sa > ea) {
> > + sa = ea = 0u;
> > + }
> > + break;
> > +
> > + case IOPMP_AMATCH_NA4:
> > + sa = this_addr << 2; /* shift up from [xx:0] to [xx+2:2] */
> > + ea = (sa + 4u) - 1u;
> > + break;
> > +
> > + case IOPMP_AMATCH_NAPOT:
> > + iopmp_decode_napot(this_addr, &sa, &ea);
> > + break;
> > +
> > + default:
> > + sa = 0u;
> > + ea = 0u;
> > + break;
> > + }
> > +
> > + s->entry_addr[entry_index].sa = sa;
> > + s->entry_addr[entry_index].ea = ea;
> > +}
> > +
> > +static uint64_t iopmp_read(void *opaque, hwaddr addr, unsigned size)
> > +{
> > + IopmpState *s = IOPMP(opaque);
> > + uint32_t rz = 0;
> > + uint32_t is_stall = 0;
> > + uint32_t sid;
> > + switch (addr) {
> > + case IOPMP_VERSION ... IOPMP_USER_CFG0 + 16 * (IOPMP_MAX_ENTRY_NUM -
> > 1):
> > + switch (addr) {
> > + case IOPMP_VERSION:
> > + rz = VENDER_ANDES << VERSION_VENDOR |
> > + SPECVER_1_0_0_DRAFT4 << VERSION_SPECVER;
> > + break;
> > + case IOPMP_IMP:
> > + rz = IMPID_1_0_0_DRAFT4_0;
> > + break;
> > + case IOPMP_HWCFG0: /* RO */
> > + rz = s->sid_num << HWCFG0_SID_NUM |
> > + s->entry_num << HWCFG0_ENTRY_NUM;
> > + break;
> > + case IOPMP_HWCFG1:
> > + rz = s->model << HWCFG1_MODEL | TOR_EN << HWCFG1_TOR_EN |
> > + s->sps_en << HWCFG1_SPS_EN |
> > + USER_CFG_EN << HWCFG1_USER_CFG_EN |
> > + s->prient_prog << HWCFG1_PRIENT_PROG |
> > + s->sid_transl_en << HWCFG1_SID_TRANSL_EN |
> > + s->sid_transl_prog << HWCFG1_SID_TRANSL_PROG |
> > + s->md_num << HWCFG1_MD_NUM |
> > + s->enable << HWCFG1_ENABLE;
> > + break;
> > + case IOPMP_HWCFG2:
> > + rz = s->prio_entry << HWCFG2_PRIO_ENTRY |
> > + s->sid_transl << HWCFG2_SID_TRANSL;
> > + break;
> > + case IOPMP_ENTRYOFFSET:
> > + rz = IOPMP_ENTRY_ADDR0;
> > + break;
> > + case IOPMP_ERRREACT:
> > + rz = s->regs.errreact;
> > + break;
> > + case IOPMP_MDSTALL:
> > + if (s->md_stall_stat) {
> > + is_stall = 1;
> > + }
> > + rz = iopmp_get_field(s->regs.mdstall, MDSTALL_MD) | is_stall;
> > + break;
> > + case IOPMP_MDSTALLH:
> > + rz = s->regs.mdstall >> 32;
> > + break;
> > + case IOPMP_SIDSCP:
> > + sid = iopmp_get_field(s->regs.sidscp, SIDSCP_SID);
> > + if (sid < s->sid_num) {
> > + rz = sid | (s->sidscp_op[sid]) << SIDSCP_STAT;
> > + } else {
> > + rz = sid | 3 << SIDSCP_STAT;
> > + }
> > + break;
> > + case IOPMP_MDLCK:
> > + rz = s->regs.mdlck & UINT32_MAX;
> > + break;
> > + case IOPMP_MDLCKH:
> > + rz = s->regs.mdlck >> 32;
> > + break;
> > + case IOPMP_MDCFGLCK:
> > + rz = s->regs.mdcfglck;
> > + break;
> > + case IOPMP_ENTRYLCK:
> > + rz = s->regs.entrylck;
> > + break;
> > + case IOPMP_ERR_REQADDR:
> > + rz = s->regs.err_reqaddr & UINT32_MAX;
> > + break;
> > + case IOPMP_ERR_REQADDRH:
> > + rz = s->regs.err_reqaddr >> 32;
> > + break;
> > + case IOPMP_ERR_REQSID:
> > + rz = s->regs.err_reqsid;
> > + break;
> > + case IOPMP_ERR_REQINFO:
> > + rz = s->regs.err_reqinfo;
> > + break;
> > +
> > + default:
> > + if (addr >= IOPMP_MDCFG0 &&
> > + addr < IOPMP_MDCFG0 + 4 * (s->md_num - 1)) {
> > + int offset = addr - IOPMP_MDCFG0;
> > + int idx = offset >> 2;
> > + if (idx == 0) {
> > + if (offset == 0) {
> > + rz = s->regs.mdcfg[idx];
> > + } else {
> > + LOGGE("%s: Bad addr %x\n", __func__, (int)addr);
> > + }
> > + } else {
> > + /* Only MDCFG0 is implemented */
> > + LOGGE("%s: Bad addr %x\n", __func__, (int)addr);
> > + }
> > + } else if (addr >= IOPMP_SRCMD_EN0 &&
> > + addr < IOPMP_SRCMD_WH0 + 32 * (s->sid_num - 1)) {
> > + int offset = addr - IOPMP_SRCMD_EN0;
> > + int idx = offset >> 5;
> > + offset &= 0x1f;
> > + if (offset == 0) {
> > + rz = s->regs.srcmd_en[idx] & UINT32_MAX;
> > + } else if (offset == 4) {
> > + rz = s->regs.srcmd_en[idx] >> 32;
> > + } else if (offset == 8) {
> > + rz = s->regs.srcmd_r[idx] & UINT32_MAX;
> > + } else if (offset == 12) {
> > + rz = s->regs.srcmd_r[idx] >> 32;
> > + } else if (offset == 16) {
> > + rz = s->regs.srcmd_w[idx] & UINT32_MAX;
> > + } else if (offset == 24) {
> > + rz = s->regs.srcmd_w[idx] >> 32;
> > + } else {
> > + LOGGE("%s: Bad addr %x\n", __func__, (int)addr);
> > + }
> > + } else if (addr >= IOPMP_ENTRY_ADDR0 &&
> > + addr < IOPMP_USER_CFG0 + 16 * (s->entry_num - 1)) {
> > + int offset = addr - IOPMP_ENTRY_ADDR0;
> > + int idx = offset >> 4;
> > + offset &= 0xf;
> > + if (offset == 0) {
> > + rz = s->regs.entry[idx].addr_reg & UINT32_MAX;
> > + } else if (offset == 4) {
> > + rz = s->regs.entry[idx].addr_reg >> 32;
> > + } else if (offset == 8) {
> > + rz = s->regs.entry[idx].cfg_reg;
> > + } else if (offset == 12) {
> > + /* Does not support user customized permission */
> > + rz = 0;
> > + } else {
> > + LOGGE("%s: Bad addr %x\n", __func__, (int)addr);
> > + }
> > + } else {
> > + LOGGE("%s: Bad addr %x\n", __func__, (int)addr);
> > + }
> > + break;
> > + }
> > + LOG("\e[95m%s: addr %08x, value %08x\e[0m\n", __func__, (int)addr,
> > + (int)rz);
> > + break;
> > + default:
> > + LOGGE("%s: Bad addr %x\n", __func__, (int)addr);
> > + }
> > +
> > + return rz;
> > +}
> > +
> > +static void
> > +iopmp_write(void *opaque, hwaddr addr, uint64_t value, unsigned size)
> > +{
> > + IopmpState *s = IOPMP(opaque);
> > + int value_f;
> > + int reg_f;
> > + uint32_t sid, op;
> > +
> > + switch (addr) {
> > + case IOPMP_VERSION ... IOPMP_USER_CFG0 + 16 * (IOPMP_MAX_ENTRY_NUM -
> > 1):
> > + switch (addr) {
> > + case IOPMP_VERSION: /* RO */
> > + break;
> > + case IOPMP_IMP: /* RO */
> > + break;
> > + case IOPMP_HWCFG0: /* RO */
> > + break;
> > + case IOPMP_HWCFG1:
> > + if (iopmp_get_field(value, HWCFG1_PRIENT_PROG)) {
> > + /* W1C */
> > + s->prient_prog = 0;
> > + }
> > + if (iopmp_get_field(value, HWCFG1_SID_TRANSL_PROG)) {
> > + /* W1C */
> > + s->sid_transl_prog = 0;
> > + }
> > + if (iopmp_get_field(value, HWCFG1_ENABLE)) {
> > + /* W1S */
> > + s->enable = 1;
> > + }
> > + break;
> > + case IOPMP_HWCFG2:
> > + if (s->prient_prog) {
> > + s->prio_entry = iopmp_get_field(value, HWCFG2_PRIO_ENTRY);
> > + }
> > + if (s->sid_transl_en && s->sid_transl_prog) {
> > + s->sid_transl = iopmp_get_field(value, HWCFG2_SID_TRANSL);
> > + }
> > + break;
> > + case IOPMP_ERRREACT:
> > + if (!iopmp_get_field(s->regs.errreact, ERRREACT_L)) {
> > + iopmp_set_field32(&s->regs.errreact, ERRREACT_L,
> > + iopmp_get_field(value, ERRREACT_L));
> > + if (iopmp_get_field(value, ERRREACT_IP)) {
> > + iopmp_set_field32(&s->regs.errreact, ERRREACT_IP, 0);
> > + }
> > + iopmp_set_field32(&s->regs.errreact, ERRREACT_IE,
> > + iopmp_get_field(value, ERRREACT_IE));
> > + iopmp_set_field32(&s->regs.errreact, ERRREACT_IRE,
> > + iopmp_get_field(value, ERRREACT_IRE));
> > + iopmp_set_field32(&s->regs.errreact, ERRREACT_RRE,
> > + iopmp_get_field(value, ERRREACT_RRE));
> > + iopmp_set_field32(&s->regs.errreact, ERRREACT_IWE,
> > + iopmp_get_field(value, ERRREACT_IWE));
> > + iopmp_set_field32(&s->regs.errreact, ERRREACT_RWE,
> > + iopmp_get_field(value, ERRREACT_RWE));
> > + iopmp_set_field32(&s->regs.errreact, ERRREACT_PEE,
> > + iopmp_get_field(value, ERRREACT_PEE));
> > + iopmp_set_field32(&s->regs.errreact, ERRREACT_RPE,
> > + iopmp_get_field(value, ERRREACT_RPE));
> > + } else {
> > + if (iopmp_get_field(value, ERRREACT_IP)) {
> > + iopmp_set_field32(&s->regs.errreact, ERRREACT_IP, 0);
> > + }
> > + }
> > + break;
> > + case IOPMP_MDSTALL:
> > + iopmp_set_field64(&s->regs.mdstall, MDSTALL, value);
> > + break;
> > + case IOPMP_MDSTALLH:
> > + iopmp_set_field64(&s->regs.mdstall, MDSTALLH, value);
> > + break;
> > + case IOPMP_SIDSCP:
> > + sid = iopmp_get_field(value, SIDSCP_SID);
> > + op = iopmp_get_field(value, SIDSCP_OP);
> > + if (sid < s->sid_num) {
> > + if (op != SIDSCP_OP_QUERY) {
> > + s->sidscp_op[sid] = op;
> > + s->regs.sidscp = value;
> > + }
> > + } else {
> > + s->regs.sidscp = sid | (0x3 << SIDSCP_OP);
> > + }
> > + break;
> > + case IOPMP_MDLCK:
> > + if (!(s->regs.mdlck & (1 << MDLCK_L))) {
> > + s->regs.mdlck = value |
> > + (s->regs.mdstall & ~(uint64_t)UINT32_MAX);
> > + }
> > + break;
> > + case IOPMP_MDLCKH:
> > + if (!(s->regs.mdlck & (1 << MDLCK_L))) {
> > + s->regs.mdlck = (uint64_t)value << 32 |
> > + (s->regs.mdstall & UINT32_MAX);
> > + }
> > + break;
> > + case IOPMP_MDCFGLCK:
> > + if (!iopmp_get_field(s->regs.mdcfglck, MDCFGLCK_L)) {
> > + value_f = iopmp_get_field(value, MDCFGLCK_F);
> > + reg_f = iopmp_get_field(s->regs.mdcfglck, MDCFGLCK_F);
> > + if (value_f > reg_f) {
> > + iopmp_set_field32(&s->regs.mdcfglck, MDCFGLCK_F,
> > value_f);
> > + }
> > + iopmp_set_field32(&s->regs.mdcfglck, MDCFGLCK_L,
> > + iopmp_get_field(value, MDCFGLCK_L));
> > + }
> > + break;
> > + case IOPMP_ENTRYLCK:
> > + if (!(iopmp_get_field(s->regs.entrylck, ENTRYLCK_L))) {
> > + value_f = iopmp_get_field(value, ENTRYLCK_F);
> > + reg_f = iopmp_get_field(s->regs.entrylck, ENTRYLCK_F);
> > + if (value_f > reg_f) {
> > + iopmp_set_field32(&s->regs.entrylck, ENTRYLCK_F,
> > value_f);
> > + }
> > + iopmp_set_field32(&s->regs.entrylck, ENTRYLCK_F,
> > + iopmp_get_field(value, ENTRYLCK_F));
> > + }
> > + case IOPMP_ERR_REQADDR: /* RO */
> > + break;
> > + case IOPMP_ERR_REQADDRH: /* RO */
> > + break;
> > + case IOPMP_ERR_REQSID: /* RO */
> > + break;
> > + case IOPMP_ERR_REQINFO: /* RO */
> > + break;
> > +
> > + default:
> > + if (addr >= IOPMP_MDCFG0 &&
> > + addr < IOPMP_MDCFG0 + 4 * (s->md_num - 1)) {
> > + int offset = addr - IOPMP_MDCFG0;
> > + int idx = offset >> 2;
> > + /* RO in rapid-k model */
> > + if (idx > 0) {
> > + LOGGE("%s: Bad addr %x\n", __func__, (int)addr);
> > + }
> > + } else if (addr >= IOPMP_SRCMD_EN0 &&
> > + addr < IOPMP_SRCMD_WH0 + 32 * (s->sid_num - 1)) {
> > + int offset = addr - IOPMP_SRCMD_EN0;
> > + int idx = offset >> 5;
> > + offset &= 0x1f;
> > + if (offset % 4) {
> > + LOGGE("%s: Bad addr %x\n", __func__, (int)addr);
> > + } else if (iopmp_get_field(s->regs.srcmd_en[idx],
> > + SRCMD_EN_L) == 0) {
> > + if (offset == 0) {
> > + iopmp_set_field64(&s->regs.srcmd_en[idx],
> > SRCMD_EN_MD,
> > + iopmp_get_field(value,
> > SRCMD_EN_MD));
> > + iopmp_set_field64(&s->regs.srcmd_en[idx],
> > SRCMD_EN_L,
> > + iopmp_get_field(value,
> > SRCMD_EN_L));
> > + } else if (offset == 4) {
> > + iopmp_set_field64(&s->regs.srcmd_en[idx],
> > SRCMD_ENH_MDH,
> > + value);
> > + } else if (offset == 8 && s->sps_en) {
> > + iopmp_set_field64(&s->regs.srcmd_r[idx],
> > SRCMD_R_MD,
> > + iopmp_get_field(value,
> > SRCMD_R_MD));
> > + } else if (offset == 12 && s->sps_en) {
> > + iopmp_set_field64(&s->regs.srcmd_r[idx],
> > SRCMD_RH_MDH,
> > + value);
> > + } else if (offset == 16 && s->sps_en) {
> > + iopmp_set_field64(&s->regs.srcmd_w[idx],
> > SRCMD_W_MD,
> > + iopmp_get_field(value,
> > SRCMD_W_MD));
> > + } else if (offset == 24 && s->sps_en) {
> > + iopmp_set_field64(&s->regs.srcmd_w[idx],
> > SRCMD_WH_MDH,
> > + value);
> > + }
> > + }
> > + } else if (addr >= IOPMP_ENTRY_ADDR0 &&
> > + addr < IOPMP_USER_CFG0 + 16 * (s->entry_num - 1)) {
> > + int offset = addr - IOPMP_ENTRY_ADDR0;
> > + int idx = offset >> 4;
> > + offset &= 0xf;
> > + if (offset == 0) {
> > + iopmp_set_field64(&s->regs.entry[idx].addr_reg,
> > + ENTRY_ADDR_ADDR, value);
> > + } else if (offset == 4) {
> > + iopmp_set_field64(&s->regs.entry[idx].addr_reg,
> > + ENTRY_ADDRH_ADDRH, value);
> > + } else if (offset == 8) {
> > + s->regs.entry[idx].cfg_reg = value;
> > + } else if (offset == 12) {
> > + /* Does not support user customized permission */
> > + ;
> > + } else {
> > + LOGGE("%s: Bad addr %x\n", __func__, (int)addr);
> > + }
> > + iopmp_update_rule(s, idx);
> > + } else {
> > + LOGGE("%s: Bad addr %x\n", __func__, (int)addr);
> > + }
> > + /* If IOPMP permission of any addr has been changed, */
> > + /* flush TLB pages. */
> > + tlb_flush_all_cpus_synced(current_cpu);
> > + break;
> > + }
> > + LOG("\e[95m%s: addr %08x, value %08x\e[0m\n", __func__, (int)addr,
> > + (int)rz);
> > + break;
> > + default:
> > + LOGGE("%s: Bad addr %x\n", __func__, (int)addr);
> > + }
> > +}
> > +
> > +/* Match entry in memory domain */
> > +static int match_entry_md(IopmpState *s, int md_idx, hwaddr s_addr,
> > + hwaddr e_addr, int *entry_idx)
> > +{
> > + int entry_idx_s, entry_idx_e;
> > + int result = ENTRY_NO_HIT;
> > + int i = 0;
> > + entry_idx_s = md_idx * s->regs.mdcfg[0];
> > + entry_idx_e = (md_idx + 1) * s->regs.mdcfg[0];
> > + if (entry_idx_s >= s->entry_num) {
> > + return result;
> > + }
> > + if (entry_idx_e > s->entry_num) {
> > + entry_idx_e = s->entry_num;
> > + }
> > + i = entry_idx_s;
> > + while (i < entry_idx_e) {
> > + if (s_addr >= s->entry_addr[i].sa && s_addr <=
> > s->entry_addr[i].ea) {
> > + /* check end address */
> > + if (e_addr >= s->entry_addr[i].sa &&
> > + e_addr <= s->entry_addr[i].ea) {
> > + *entry_idx = i;
> > + return ENTRY_HIT;
> > + } else if (i >= s->prio_entry) {
> > + /* record result and continue for non-prio_entry */
> > + result = ENTRY_PAR_HIT;
> > + continue;
> > + } else {
> > + return ENTRY_PAR_HIT;
> > + }
> > + }
> > + i++;
> > + }
> > + return result;
> > +}
> > +
> > +static int match_entry(IopmpState *s, int sid, hwaddr s_addr, hwaddr
> > e_addr,
> > + int *match_md_idx, int *match_entry_idx)
> > +{
> > + int cur_result = ENTRY_NO_HIT;
> > + int result = ENTRY_NO_HIT;
> > + uint64_t srcmd_en = s->regs.srcmd_en[sid] >> 1;
> > + for (int md_idx = 0; md_idx < s->md_num; md_idx++) {
> > + if (srcmd_en & (1ULL << md_idx)) {
> > + cur_result = match_entry_md(s, md_idx, s_addr, e_addr,
> > + match_entry_idx);
> > + if (cur_result == ENTRY_HIT) {
> > + *match_md_idx = md_idx;
> > + return cur_result;
> > + }
> > + if (cur_result > result) {
> > + result = cur_result;
> > + }
> > + }
> > + }
> > + return result;
> > +}
> > +
> > +static bool check_md_stall(IopmpState *s, int md_idx)
> > +{
> > + uint64_t md_selected = iopmp_get_field(s->regs.mdstall, MDSTALL_MD) &
> > + (1 << md_idx);
> > + if (iopmp_get_field(s->regs.mdstall, MDSTALL_EXEMPT)) {
> > + return !md_selected;
> > + } else {
> > + return md_selected;
> > + }
> > +}
> > +
> > +static inline bool check_sidscp_stall(IopmpState *s, int sid)
> > +{
> > + return s->sidscp_op[sid] == SIDSCP_OP_STALL;
> > +}
> > +
> > +static void iopmp_error_reaction(IopmpState *s, uint32_t id, hwaddr start,
> > + hwaddr end, uint32_t info)
> > +{
> > + if (start == s->prev_error_info[id].start_addr &&
> > + end == s->prev_error_info[id].end_addr &&
> > + info == s->prev_error_info[id].reqinfo) {
> > + /* skip following error */
> > + ;
> > + } else {
> > + s->prev_error_info[id].start_addr = start;
> > + s->prev_error_info[id].end_addr = end;
> > + s->prev_error_info[id].reqinfo = info;
> > + if (!iopmp_get_field(s->regs.errreact, ERRREACT_IP)) {
> > + iopmp_set_field32(&s->regs.errreact, ERRREACT_IP, 1);
> > + s->regs.err_reqsid = id;
> > + s->regs.err_reqaddr = start;
> > + s->regs.err_reqinfo = info;
> > +
> > + if (iopmp_get_field(info, ERR_REQINFO_TYPE) ==
> > ERR_REQINFO_TYPE_READ
> > + && iopmp_get_field(s->regs.errreact, ERRREACT_IE) &&
> > + iopmp_get_field(s->regs.errreact, ERRREACT_IRE)) {
> > + qemu_set_irq(s->irq, 1);
> > + }
> > + if (iopmp_get_field(info, ERR_REQINFO_TYPE) ==
> > + ERR_REQINFO_TYPE_WRITE &&
> > + iopmp_get_field(s->regs.errreact, ERRREACT_IE) &&
> > + iopmp_get_field(s->regs.errreact, ERRREACT_IWE)) {
> > + qemu_set_irq(s->irq, 1);
> > + }
> > + }
> > + }
> > +}
> > +
> > +static IOMMUTLBEntry iopmp_translate(IOMMUMemoryRegion *iommu, hwaddr addr,
> > + IOMMUAccessFlags flags, int iommu_idx)
> > +{
> > + bool is_stalled = false;
> > + int sid = iommu_idx;
> > + IopmpState *s = IOPMP(container_of(iommu, IopmpState, iommu));
> > + hwaddr start_addr, end_addr;
> > + if (s->transaction_state[sid].supported) {
> > + /* get transaction_state if device supported */
> > + start_addr = s->transaction_state[sid].start_addr;
> > + end_addr = s->transaction_state[sid].end_addr;
> > + if (addr > end_addr || addr < start_addr ||
> > + !s->transaction_state[sid].running) {
> > + error_report("transaction_state error.");
> > + exit(1);
> > + }
> > + } else {
> > + start_addr = addr;
> > + end_addr = addr;
> > + }
> > + IOMMUTLBEntry entry = {
> > + .target_as = &s->downstream_as,
> > + .iova = addr,
> > + .translated_addr = addr,
> > + .addr_mask = (~(hwaddr)0),
> > + .perm = IOMMU_NONE,
> > + };
> > + int entry_idx = -1;
> > + int md_idx = -1;
> > + int result = match_entry(s, sid, start_addr, end_addr, &md_idx,
> > &entry_idx);
> > + int srcmd_rw;
> > + if (result == ENTRY_HIT) {
> > + is_stalled = check_md_stall(s, md_idx) || check_sidscp_stall(s,
> > sid);
> > + if (is_stalled) {
> > + s->md_stall_stat |= (1 << md_idx);
> > + entry.target_as = &s->stall_io_as;
> > + entry.perm = IOMMU_RW;
> > + return entry;
> > + } else {
> > + s->md_stall_stat &= ~(1 << md_idx);
> > + }
> > + entry.perm = s->regs.entry[entry_idx].cfg_reg & 0x7;
> > + if (s->sps_en) {
> > + /* SPS extension does not affect x permission */
> > + srcmd_rw = 0x4 | ((s->regs.srcmd_r[sid] >>
> > + (md_idx + SRCMD_R_MD)) & 0x1);
> > + srcmd_rw |= ((s->regs.srcmd_w[sid] >>
> > + (md_idx + SRCMD_W_MD)) & 0x1) << 1;
> > + entry.perm &= srcmd_rw;
> > + }
> > + if ((entry.perm & flags) == 0) {
> > + /* permission denied */
> > + iopmp_error_reaction(s, sid, start_addr, end_addr,
> > + (entry_idx << ERR_REQINFO_EID) |
> > + ((flags - 1) << ERR_REQINFO_TYPE));
> > + entry.target_as = &s->blocked_io_as;
> > + entry.perm = IOMMU_RW;
> > + } else {
> > + entry.addr_mask = s->entry_addr[entry_idx].ea -
> > + s->entry_addr[entry_idx].sa;
> > + /* clear error info */
> > + s->prev_error_info[sid].reqinfo = 0;
> > + if (s->sid_transl_en) {
> > + /* pass to next iopmp */
> > + if (s->next_iommu) {
> > + int new_sid = s->sid_transl;
> > + IopmpState *next_s = IOPMP(container_of(s->next_iommu,
> > + IopmpState,
> > iommu));
> > + next_s->transaction_state[new_sid].supported = true;
> > + while (next_s->transaction_state[new_sid].running) {
> > + ;
> > + }
> > + qemu_mutex_lock(&next_s->iopmp_transaction_mutex);
> > + next_s->transaction_state[new_sid].running = 1;
> > + qemu_mutex_unlock(&next_s->iopmp_transaction_mutex);
> > + next_s->transaction_state[new_sid].start_addr =
> > start_addr;
> > + next_s->transaction_state[new_sid].end_addr = end_addr;
> > + entry = iopmp_translate(s->next_iommu, addr, flags,
> > + s->sid_transl);
> > + qemu_mutex_lock(&next_s->iopmp_transaction_mutex);
> > + next_s->transaction_state[new_sid].running = 0;
> > + qemu_mutex_unlock(&next_s->iopmp_transaction_mutex);
> > + return entry;
> > + } else {
> > + error_report("Next iopmp is not found.");
> > + exit(1);
> > + }
> > + }
> > + }
> > + } else {
> > + if (result == ENTRY_PAR_HIT) {
> > + iopmp_error_reaction(s, sid, start_addr, end_addr,
> > + (1 << ERR_REQINFO_PAR_HIT) |
> > + ((flags - 1) << ERR_REQINFO_TYPE));
> > + } else {
> > + iopmp_error_reaction(s, sid, start_addr, end_addr,
> > + (1 << ERR_REQINFO_NO_HIT) |
> > + ((flags - 1) << ERR_REQINFO_TYPE));
> > + }
> > + entry.target_as = &s->blocked_io_as;
> > + entry.perm = IOMMU_RW;
> > + }
> > + return entry;
> > +}
> > +
> > +static const MemoryRegionOps iopmp_ops = {
> > + .read = iopmp_read,
> > + .write = iopmp_write,
> > + .endianness = DEVICE_NATIVE_ENDIAN,
> > + .valid = {.min_access_size = 4, .max_access_size = 4}
> > +};
> > +
> > +static MemTxResult iopmp_block_write(void *opaque, hwaddr addr, uint64_t
> > value,
> > + unsigned size, MemTxAttrs attrs)
> > +{
> > + IopmpState *s = IOPMP(opaque);
> > +
> > + switch (iopmp_get_field(s->regs.errreact, ERRREACT_RWE)) {
> > + case RWE_BUS_ERROR:
> > + return MEMTX_ERROR;
> > + break;
> > + case RWE_DECODE_ERROR:
> > + return MEMTX_DECODE_ERROR;
> > + break;
> > + case RWE_SUCCESS:
> > + return MEMTX_OK;
> > + break;
> > + default:
> > + break;
> > + }
> > + return MEMTX_OK;
> > +}
> > +
> > +static MemTxResult iopmp_block_read(void *opaque, hwaddr addr, uint64_t
> > *pdata,
> > + unsigned size, MemTxAttrs attrs)
> > +{
> > + IopmpState *s = IOPMP(opaque);
> > +
> > + switch (iopmp_get_field(s->regs.errreact, ERRREACT_RRE)) {
> > + case RRE_BUS_ERROR:
> > + return MEMTX_ERROR;
> > + break;
> > + case RRE_DECODE_ERROR:
> > + return MEMTX_DECODE_ERROR;
> > + break;
> > + case RRE_SUCCESS_ZEROS:
> > + *pdata = 0;
> > + return MEMTX_OK;
> > + break;
> > + case RRE_SUCCESS_ONES:
> > + *pdata = UINT64_MAX;
> > + return MEMTX_OK;
> > + break;
> > + default:
> > + break;
> > + }
> > + return MEMTX_OK;
> > +}
> > +
> > +static const MemoryRegionOps iopmp_block_io_ops = {
> > + .read_with_attrs = iopmp_block_read,
> > + .write_with_attrs = iopmp_block_write,
> > + .endianness = DEVICE_NATIVE_ENDIAN,
> > + .valid = {.min_access_size = 1, .max_access_size = 8},
> > +};
> > +
> > +static MemTxResult iopmp_handle_stall(IopmpState *s, hwaddr addr,
> > + MemTxAttrs attrs)
> > +{
> > + return MEMTX_IOPMP_STALL;
> > +}
> > +
> > +static MemTxResult iopmp_stall_write(void *opaque, hwaddr addr, uint64_t
> > value,
> > + unsigned size, MemTxAttrs attrs)
> > +{
> > + IopmpState *s = IOPMP(opaque);
> > +
> > + return iopmp_handle_stall(s, addr, attrs);
> > +}
> > +
> > +static MemTxResult iopmp_stall_read(void *opaque, hwaddr addr, uint64_t
> > *pdata,
> > + unsigned size, MemTxAttrs attrs)
> > +{
> > + IopmpState *s = IOPMP(opaque);
> > +
> > + *pdata = 0;
> > + return iopmp_handle_stall(s, addr, attrs);
> > +}
> > +
> > +static const MemoryRegionOps iopmp_stall_io_ops = {
> > + .read_with_attrs = iopmp_stall_read,
> > + .write_with_attrs = iopmp_stall_write,
> > + .endianness = DEVICE_NATIVE_ENDIAN,
> > + .valid = {.min_access_size = 1, .max_access_size = 8},
> > +};
> > +
> > +static void iopmp_realize(DeviceState *dev, Error **errp)
> > +{
> > + Object *obj = OBJECT(dev);
> > + SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
> > + IopmpState *s = IOPMP(dev);
> > + s->downstream = get_system_memory();
> > + uint64_t size = memory_region_size(s->downstream);
> > +
> > + qemu_mutex_init(&s->iopmp_transaction_mutex);
> > + s->prient_prog = 1;
> > + s->sid_num = MIN(s->sid_num, IOPMP_MAX_SID_NUM);
> > + s->md_num = MIN(s->md_num, IOPMP_MAX_MD_NUM);
> > + s->entry_num = MIN(s->entry_num, IOPMP_MAX_ENTRY_NUM);
> > + if (s->sid_transl_en) {
> > + s->sid_transl_prog = 1;
> > + }
> > + if (!s->model_str || strcmp(s->model_str, "rapidk") == 0) {
> > + /* apply default model */
> > + s->model = IOPMP_MODEL_RAPIDK;
> > + iopmp_set_field32(&s->regs.mdcfglck, MDCFGLCK_F, s->md_num);
> > + iopmp_set_field32(&s->regs.mdcfglck, MDCFGLCK_L, 1);
> > + s->regs.mdcfg[0] = s->k;
> > + } else {
> > + error_report("IOPMP model %s is not supported. "
> > + "Vailid values is rapidk.", s->model_str);
> > + exit(1);
> > + }
> > + memory_region_init_iommu(&s->iommu, sizeof(s->iommu),
> > + TYPE_IOPMP_IOMMU_MEMORY_REGION,
> > + obj, "iopmp-iommu", UINT64_MAX);
> > + address_space_init(&s->iopmp_as, MEMORY_REGION(&s->iommu), "iommu");
> > + memory_region_init_io(&s->mmio, obj, &iopmp_ops,
> > + s, "iopmp-regs", 0x100000);
> > + sysbus_init_mmio(sbd, &s->mmio);
> > + memory_region_init_io(&s->blocked_io, obj, &iopmp_block_io_ops,
> > + s, "iopmp-blocked-io", size);
> > + address_space_init(&s->downstream_as, s->downstream,
> > + "iopmp-downstream-as");
> > + address_space_init(&s->blocked_io_as, &s->blocked_io,
> > + "iopmp-blocked-io-as");
> > +
> > + memory_region_init_io(&s->stall_io, obj, &iopmp_stall_io_ops,
> > + s, "iopmp-stall-io", size);
> > + address_space_init(&s->stall_io_as, &s->stall_io,
> > + "iopmp-stall-io-as");
> > +
> > + object_initialize_child(OBJECT(s), "iopmp_transaction_info",
> > + &s->transaction_info_sink,
> > + TYPE_IOPMP_TRASACTION_INFO_SINK);
> > +}
> > +
> > +static void iopmp_reset(DeviceState *dev)
> > +{
> > + IopmpState *s = IOPMP(dev);
> > + qemu_set_irq(s->irq, 0);
> > + memset(&s->regs, 0, sizeof(iopmp_regs));
> > + memset(&s->entry_addr, 0, IOPMP_MAX_ENTRY_NUM * sizeof(iopmp_addr_t));
> > + if (s->model == IOPMP_MODEL_RAPIDK) {
> > + iopmp_set_field32(&s->regs.mdcfglck, MDCFGLCK_F, s->md_num);
> > + iopmp_set_field32(&s->regs.mdcfglck, MDCFGLCK_L, 1);
> > + s->regs.mdcfg[0] = s->k;
> > + }
> > + s->regs.errreact = 0;
> > +
> > + s->prient_prog = 1;
> > + if (s->sid_transl_en) {
> > + s->sid_transl_prog = 1;
> > + }
> > +}
> > +
> > +static int iopmp_attrs_to_index(IOMMUMemoryRegion *iommu, MemTxAttrs attrs)
> > +{
> > + unsigned int sid = attrs.requester_id;
> > + return sid;
> > +}
> > +
> > +static void iopmp_iommu_memory_region_class_init(ObjectClass *klass, void
> > *data)
> > +{
> > + IOMMUMemoryRegionClass *imrc = IOMMU_MEMORY_REGION_CLASS(klass);
> > +
> > + imrc->translate = iopmp_translate;
> > + imrc->attrs_to_index = iopmp_attrs_to_index;
> > +}
> > +
> > +static Property iopmp_property[] = {
> > + DEFINE_PROP_STRING("model", IopmpState, model_str),
> > + DEFINE_PROP_BOOL("sps_en", IopmpState, sps_en, false),
> > + DEFINE_PROP_BOOL("sid_transl_en", IopmpState, sid_transl_en, false),
> > + DEFINE_PROP_UINT32("k", IopmpState, k, IOPMP_MODEL_K),
> > + DEFINE_PROP_UINT32("prio_entry", IopmpState, prio_entry, PRIO_ENTRY),
> > + DEFINE_PROP_UINT32("sid_num", IopmpState, sid_num, IOPMP_MAX_SID_NUM),
> > + DEFINE_PROP_UINT32("md_num", IopmpState, md_num, IOPMP_MAX_MD_NUM),
> > + DEFINE_PROP_UINT32("entry_num", IopmpState, entry_num,
> > IOPMP_MAX_ENTRY_NUM),
> > + DEFINE_PROP_END_OF_LIST(),
> > +};
> > +
> > +static void iopmp_class_init(ObjectClass *klass, void *data)
> > +{
> > + DeviceClass *dc = DEVICE_CLASS(klass);
> > + device_class_set_props(dc, iopmp_property);
> > + dc->realize = iopmp_realize;
> > + dc->reset = iopmp_reset;
> > +}
> > +
> > +static void iopmp_init(Object *obj)
> > +{
> > + IopmpState *s = IOPMP(obj);
> > + SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
> > + sysbus_init_irq(sbd, &s->irq);
> > +}
> > +
> > +static const TypeInfo iopmp_info = {
> > + .name = TYPE_IOPMP,
> > + .parent = TYPE_SYS_BUS_DEVICE,
> > + .instance_size = sizeof(IopmpState),
> > + .instance_init = iopmp_init,
> > + .class_init = iopmp_class_init,
> > +};
> > +
> > +static const TypeInfo
> > +iopmp_iommu_memory_region_info = {
> > + .name = TYPE_IOPMP_IOMMU_MEMORY_REGION,
> > + .parent = TYPE_IOMMU_MEMORY_REGION,
> > + .class_init = iopmp_iommu_memory_region_class_init,
> > +};
> > +
> > +DeviceState *iopmp_create(hwaddr addr, qemu_irq irq)
> > +{
> > + LOG("%s:\n", __func__);
> > + DeviceState *iopmp_device = sysbus_create_varargs(TYPE_IOPMP, addr,
> > irq,
> > + NULL);
> > + return iopmp_device;
> > +}
> > +
> > +void
> > +cascade_iopmp(DeviceState *cur_dev, DeviceState *next_dev)
> > +{
> > + IopmpState *s = IOPMP(cur_dev);
> > + s->sid_transl_en = true;
> > + IopmpState *next_s = IOPMP(next_dev);
> > + s->next_iommu = &next_s->iommu;
> > +}
> > +
> > +static size_t
> > +transaction_info_push(StreamSink *transaction_info_sink, unsigned char
> > *buf,
> > + size_t len, bool eop)
> > +{
> > + Iopmp_StreamSink *ss =
> > IOPMP_TRASACTION_INFO_SINK(transaction_info_sink);
> > + IopmpState *s = IOPMP(container_of(ss, IopmpState,
> > + transaction_info_sink));
> > + iopmp_transaction_info signal;
> > + memcpy(&signal, buf, len);
> > + uint32_t sid = signal.sid;
> > + if (s->transaction_state[sid].running) {
> > + if (eop) {
> > + qemu_mutex_lock(&s->iopmp_transaction_mutex);
> > + s->transaction_state[sid].running = 0;
> > + qemu_mutex_unlock(&s->iopmp_transaction_mutex);
> > + return 1;
> > + } else {
> > + return 0;
> > + }
> > + } else if (len == sizeof(iopmp_transaction_info)) {
> > + s->transaction_state[sid].supported = 1;
> > + qemu_mutex_lock(&s->iopmp_transaction_mutex);
> > + s->transaction_state[sid].running = 1;
> > + qemu_mutex_unlock(&s->iopmp_transaction_mutex);
> > + s->transaction_state[sid].start_addr = signal.start_addr;
> > + s->transaction_state[sid].end_addr = signal.end_addr;
> > + return 1;
> > + }
> > + return 0;
> > +}
> > +
> > +static void iopmp_transaction_info_sink_class_init(ObjectClass *klass,
> > + void *data)
> > +{
> > + StreamSinkClass *ssc = STREAM_SINK_CLASS(klass);
> > + ssc->push = transaction_info_push;
> > +}
> > +
> > +static const TypeInfo transaction_info_sink = {
> > + .name = TYPE_IOPMP_TRASACTION_INFO_SINK,
> > + .parent = TYPE_OBJECT,
> > + .instance_size = sizeof(Iopmp_StreamSink),
> > + .class_init = iopmp_transaction_info_sink_class_init,
> > + .interfaces = (InterfaceInfo[]) {
> > + { TYPE_STREAM_SINK },
> > + { }
> > + },
> > +};
> > +
> > +static void
> > +iopmp_register_types(void)
> > +{
> > + type_register_static(&iopmp_info);
> > + type_register_static(&iopmp_iommu_memory_region_info);
> > + type_register_static(&transaction_info_sink);
> > +}
> > +
> > +type_init(iopmp_register_types);
> > diff --git a/include/hw/misc/riscv_iopmp.h b/include/hw/misc/riscv_iopmp.h
> > new file mode 100644
> > index 0000000000..e679ffe5da
> > --- /dev/null
> > +++ b/include/hw/misc/riscv_iopmp.h
> > @@ -0,0 +1,341 @@
> > +/*
> > + * QEMU RISC-V IOPMP (Input Output Physical Memory Protection)
> > + *
> > + * Copyright (c) 2023 Andes Tech. Corp.
> > + *
> > + * 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_H
> > +#define RISCV_IOPMP_H
> > +
> > +#include "hw/sysbus.h"
> > +#include "qemu/typedefs.h"
> > +#include "memory.h"
> > +#include "hw/stream.h"
> > +#include "hw/misc/riscv_iopmp_transaction_info.h"
> > +
> > +#define TYPE_IOPMP "iopmp"
> > +#define IOPMP(obj) OBJECT_CHECK(IopmpState, (obj), TYPE_IOPMP)
> > +
> > +#define iopmp_get_field(reg, name) (((reg) & (name ## _FIELD)) >> (name))
> > +#define iopmp_set_field32(reg, name, newval) do { \
> > + uint32_t val = *reg; \
> > + val &= ~name##_FIELD; \
> > + val |= ((newval) << name) & name##_FIELD; \
> > + *reg = val; \
> > + } while (0)
> > +#define iopmp_set_field64(reg, name, newval) do { \
> > + uint64_t val = *reg; \
> > + val &= ~name##_FIELD; \
> > + val |= ((newval) << name) & name##_FIELD; \
> > + *reg = val; \
> > + } while (0)
> > +
> > +
> > +#define IOPMP_MAX_MD_NUM 63
> > +#define IOPMP_MAX_SID_NUM 256
> > +#define IOPMP_MAX_ENTRY_NUM 512
> > +
> > +#define IOPMP_VERSION 0x0
> > +#define IOPMP_IMP 0x4
> > +#define IOPMP_HWCFG0 0x8
> > +#define IOPMP_HWCFG1 0xC
> > +#define IOPMP_HWCFG2 0x10
> > +#define IOPMP_ENTRYOFFSET 0x20
> > +#define IOPMP_ERRREACT 0x28
> > +#define IOPMP_MDSTALL 0x30
> > +#define IOPMP_MDSTALLH 0x34
> > +#define IOPMP_SIDSCP 0x38
> > +#define IOPMP_MDLCK 0x40
> > +#define IOPMP_MDLCKH 0x44
> > +#define IOPMP_MDCFGLCK 0x48
> > +#define IOPMP_ENTRYLCK 0x4C
> > +
> > +#define IOPMP_ERR_REQADDR 0x60
> > +#define IOPMP_ERR_REQADDRH 0x64
> > +#define IOPMP_ERR_REQSID 0x68
> > +#define IOPMP_ERR_REQINFO 0x6C
> > +
> > +#define IOPMP_MDCFG0 0x800
> > +#define IOPMP_SRCMD_EN0 0x1000
> > +#define IOPMP_SRCMD_ENH0 0x1004
> > +#define IOPMP_SRCMD_R0 0x1008
> > +#define IOPMP_SRCMD_RH0 0x100C
> > +#define IOPMP_SRCMD_W0 0x1010
> > +#define IOPMP_SRCMD_WH0 0x1014
> > +
> > +#define IOPMP_ENTRY_ADDR0 0x4000
> > +#define IOPMP_ENTRY_ADDRH0 0x4004
> > +#define IOPMP_ENTRY_CFG0 0x4008
> > +#define IOPMP_USER_CFG0 0x400C
> > +
> > +#define VERSION_VENDOR 0
> > +#define VERSION_SPECVER 24
> > +#define VENDER_ANDES 6533
> > +#define SPECVER_1_0_0_DRAFT4 4
> > +
> > +#define IMPID_1_0_0_DRAFT4_0 10040
> > +
> > +#define HWCFG0_SID_NUM 0
> > +#define HWCFG0_ENTRY_NUM 16
> > +
> > +#define HWCFG1_MODEL 0
> > +#define HWCFG1_TOR_EN 4
> > +#define HWCFG1_SPS_EN 5
> > +#define HWCFG1_USER_CFG_EN 6
> > +#define HWCFG1_PRIENT_PROG 7
> > +#define HWCFG1_SID_TRANSL_EN 8
> > +#define HWCFG1_SID_TRANSL_PROG 9
> > +#define HWCFG1_MD_NUM 24
> > +#define HWCFG1_ENABLE 31
> > +
> > +#define HWCFG1_SPS_EN_FIELD (1 << HWCFG1_SPS_EN)
> > +#define HWCFG1_PRIENT_PROG_FIELD (1 << HWCFG1_PRIENT_PROG)
> > +#define HWCFG1_SID_TRANSL_PROG_FIELD (1 << HWCFG1_SID_TRANSL_PROG)
> > +#define HWCFG1_ENABLE_FIELD (1 << HWCFG1_ENABLE)
> > +
> > +#define HWCFG2_PRIO_ENTRY 0
> > +#define HWCFG2_SID_TRANSL 16
> > +
> > +#define HWCFG2_PRIO_ENTRY_FIELD (0xFFFF << HWCFG2_PRIO_ENTRY)
> > +#define HWCFG2_SID_TRANSL_FIELD (0xFFFF << HWCFG2_SID_TRANSL)
> > +
> > +#define ERRREACT_L 0
> > +#define ERRREACT_IE 1
> > +#define ERRREACT_IP 2
> > +#define ERRREACT_IRE 4
> > +#define ERRREACT_RRE 5
> > +#define ERRREACT_IWE 8
> > +#define ERRREACT_RWE 9
> > +#define ERRREACT_PEE 28
> > +#define ERRREACT_RPE 29
> > +
> > +#define ERRREACT_L_FIELD (0x1 << ERRREACT_L)
> > +#define ERRREACT_IE_FIELD (0x1 << ERRREACT_IE)
> > +#define ERRREACT_IP_FIELD (0x1 << ERRREACT_IP)
> > +#define ERRREACT_IRE_FIELD (0x1 << ERRREACT_IRE)
> > +#define ERRREACT_RRE_FIELD (0x7 << ERRREACT_RRE)
> > +#define ERRREACT_IWE_FIELD (0x1 << ERRREACT_IWE)
> > +#define ERRREACT_RWE_FIELD (0x7 << ERRREACT_RWE)
> > +#define ERRREACT_PEE_FIELD (0x1 << ERRREACT_PEE)
> > +#define ERRREACT_RPE_FIELD (0x7 << ERRREACT_RPE)
> > +
> > +#define RRE_BUS_ERROR 0
> > +#define RRE_DECODE_ERROR 1
> > +#define RRE_SUCCESS_ZEROS 2
> > +#define RRE_SUCCESS_ONES 3
> > +
> > +#define RWE_BUS_ERROR 0
> > +#define RWE_DECODE_ERROR 1
> > +#define RWE_SUCCESS 2
> > +
> > +#define MDSTALL 0
> > +#define MDSTALLH 32
> > +#define MDSTALL_FIELD UINT32_MAX
> > +#define MDSTALLH_FIELD (UINT64_MAX << MDSTALLH)
> > +#define MDSTALL_EXEMPT 0
> > +#define MDSTALL_EXEMPT_FIELD (1 << MDSTALL_EXEMPT)
> > +#define MDSTALL_ISSTALLED 0
> > +#define MDSTALL_MD 1
> > +#define MDSTALL_MD_FIELD (0x7FFFFFFFFFFFFFFF << MDSTALL_MD)
> > +
> > +#define SIDSCP_SID 0
> > +#define SIDSCP_STAT 30
> > +#define SIDSCP_OP 30
> > +#define SIDSCP_SID_FIELD (0xFFFF << SIDSCP_SID)
> > +#define SIDSCP_STAT_FIELD (0x3 << SIDSCP_STAT)
> > +#define SIDSCP_OP_FIELD (0x3 << SIDSCP_OP)
> > +#define SIDSCP_OP_QUERY 0
> > +#define SIDSCP_OP_STALL 1
> > +#define SIDSCP_OP_NOTSTALL 2
> > +
> > +#define MDLCK_L 0
> > +#define MDLCK_MD 1
> > +
> > +#define MDCFGLCK_L 0
> > +#define MDCFGLCK_L_FIELD (0x1 << MDCFGLCK_L)
> > +#define MDCFGLCK_F 1
> > +#define MDCFGLCK_F_FIELD (0x7F << MDCFGLCK_F)
> > +
> > +#define ENTRYLCK_L 0
> > +#define ENTRYLCK_L_FIELD (0x1 << MDCFGLCK_L)
> > +#define ENTRYLCK_F 1
> > +#define ENTRYLCK_F_FIELD (0xFFFF << ENTRYLCK_F)
> > +
> > +#define ERR_REQINFO_NO_HIT 0
> > +#define ERR_REQINFO_PAR_HIT 1
> > +#define ERR_REQINFO_TYPE 8
> > +#define ERR_REQINFO_EID 16
> > +
> > +#define ERR_REQINFO_NO_HIT_FIELD (0x1 << ERR_REQINFO_NO_HIT)
> > +#define ERR_REQINFO_PAR_HIT_FIELD (0x1 << ERR_REQINFO_PAR_HIT)
> > +#define ERR_REQINFO_TYPE_FIELD (0x3 << ERR_REQINFO_TYPE)
> > +#define ERR_REQINFO_EID_FIELD (0xFFFF << ERR_REQINFO_EID)
> > +
> > +#define ERR_REQINFO_TYPE_READ 0
> > +#define ERR_REQINFO_TYPE_WRITE 1
> > +#define ERR_REQINFO_TYPE_USER 3
> > +
> > +#define SRCMD_EN_L 0
> > +#define SRCMD_EN_MD 1
> > +#define SRCMD_EN_L_FIELD (0x1 << SRCMD_EN_L)
> > +#define SRCMD_EN_MD_FIELD (0x7FFFFFFF << SRCMD_EN_MD)
> > +#define SRCMD_ENH_MDH 32
> > +#define SRCMD_ENH_MDH_FIELD (0xFFFFFFFFUL << SRCMD_ENH_MDH)
> > +
> > +#define SRCMD_R_MD 1
> > +#define SRCMD_R_MD_FIELD (0x7FFFFFFF << SRCMD_R_MD)
> > +#define SRCMD_RH_MDH 32
> > +#define SRCMD_RH_MDH_FIELD (0xFFFFFFFFUL << SRCMD_RH_MDH)
> > +#define SRCMD_W_MD 1
> > +#define SRCMD_W_MD_FIELD (0x7FFFFFFF << SRCMD_W_MD)
> > +#define SRCMD_WH_MDH 32
> > +#define SRCMD_WH_MDH_FIELD (0xFFFFFFFFUL << SRCMD_WH_MDH)
> > +
> > +#define ENTRY_ADDR_ADDR 0
> > +#define ENTRY_ADDR_ADDR_FIELD 0xFFFFFFFF
> > +#define ENTRY_ADDRH_ADDRH 32
> > +#define ENTRY_ADDRH_ADDRH_FIELD (0xFFFFFFFFUL << ENTRY_ADDRH_ADDRH)
> > +
> > +#define ENTRY_CFG_R 0
> > +#define ENTRY_CFG_W 1
> > +#define ENTRY_CFG_X 2
> > +#define ENTRY_CFG_A 3
> > +#define ENTRY_CFG_A_FIELD (0x3 << ENTRY_CFG_A)
> > +
> > +#define IOPMP_MODEL_FULL 0
> > +#define IOPMP_MODEL_RAPIDK 0x1
> > +#define IOPMP_MODEL_DYNAMICK 0x2
> > +#define IOPMP_MODEL_ISOLATION 0x3
> > +#define IOPMP_MODEL_COMPACTK 0x4
> > +#define IOPMP_MODEL_K 8
> > +
> > +#define TOR_EN 1
> > +#define SPS_EN 0
> > +#define USER_CFG_EN 0
> > +#define PROG_PRIENT 1
> > +#define PRIO_ENTRY IOPMP_MAX_ENTRY_NUM
> > +#define SID_TRANSL_EN 0
> > +#define SID_TRANSL 0
> > +
> > +#define ENTRY_NO_HIT 0
> > +#define ENTRY_PAR_HIT 1
> > +#define ENTRY_HIT 2
> > +
> > +#define AXI_BURST_TYPE_FIX 0
> > +#define AXI_BURST_TYPE_INC 1
> > +
> > +typedef enum {
> > + IOPMP_READ = 1 << 0,
> > + IOPMP_WRITE = 1 << 1,
> > + IOPMP_EXEC = 1 << 2,
> > + IOPMP_ADDRMODE = 1 << 3,
> > +} iopmp_priv_t;
> > +
> > +typedef enum {
> > + IOPMP_AMATCH_OFF, /* Null (off) */
> > + IOPMP_AMATCH_TOR, /* Top of Range */
> > + IOPMP_AMATCH_NA4, /* Naturally aligned four-byte region */
> > + IOPMP_AMATCH_NAPOT /* Naturally aligned power-of-two region */
> > +} iopmp_am_t;
> > +
> > +typedef struct {
> > + uint64_t addr_reg;
> > + uint32_t cfg_reg;
> > +} iopmp_entry_t;
> > +
> > +typedef struct {
> > + target_ulong sa;
> > + target_ulong ea;
> > +} iopmp_addr_t;
> > +
> > +typedef struct {
> > + uint64_t srcmd_en[IOPMP_MAX_SID_NUM];
> > + uint64_t srcmd_r[IOPMP_MAX_SID_NUM];
> > + uint64_t srcmd_w[IOPMP_MAX_SID_NUM];
> > + uint32_t mdcfg[IOPMP_MAX_MD_NUM];
> > + iopmp_entry_t entry[IOPMP_MAX_ENTRY_NUM];
> > + uint64_t mdmsk;
> > + uint64_t mdlck;
> > + uint32_t entrylck;
> > + uint32_t mdcfglck;
> > + uint32_t arrlck;
> > + uint64_t mdstall;
> > + uint32_t sidscp;
> > + uint32_t errreact;
> > + uint64_t err_reqaddr;
> > + uint32_t err_reqsid;
> > + uint32_t err_reqinfo;
> > +} iopmp_regs;
> > +
> > +/* To verfiy the same transcation */
> > +typedef struct iopmp_transaction_state {
> > + bool supported;
> > + bool running;
> > + hwaddr start_addr;
> > + hwaddr end_addr;
> > +} iopmp_transaction_state;
> > +
> > +typedef struct iopmp_error_info {
> > + uint32_t reqinfo;
> > + hwaddr start_addr;
> > + hwaddr end_addr;
> > +} iopmp_error_info;
> > +
> > +typedef struct Iopmp_StreamSink {
> > + Object parent;
> > +} Iopmp_StreamSink;
> > +
> > +typedef struct IopmpState {
> > + SysBusDevice parent_obj;
> > + iopmp_addr_t entry_addr[IOPMP_MAX_ENTRY_NUM];
> > + iopmp_transaction_state transaction_state[IOPMP_MAX_SID_NUM];
> > + QemuMutex iopmp_transaction_mutex;
> > + iopmp_error_info prev_error_info[IOPMP_MAX_SID_NUM];
> > + MemoryRegion mmio;
> > + IOMMUMemoryRegion iommu;
> > + IOMMUMemoryRegion *next_iommu;
> > + iopmp_regs regs;
> > + MemoryRegion *downstream;
> > + MemoryRegion blocked_io;
> > + MemoryRegion stall_io;
> > + char *model_str;
> > + uint32_t model;
> > + uint32_t k;
> > + bool sps_en;
> > + bool sid_transl_prog;
> > + bool prient_prog;
> > + bool sid_transl_en;
> > + uint32_t sid_transl;
> > + Iopmp_StreamSink transaction_info_sink;
> > +
> > + AddressSpace iopmp_as;
> > + AddressSpace downstream_as;
> > + AddressSpace blocked_io_as;
> > + AddressSpace stall_io_as;
> > + qemu_irq irq;
> > + bool enable;
> > + uint32_t sidscp_op[IOPMP_MAX_SID_NUM];
> > + uint64_t md_stall_stat;
> > + uint32_t prio_entry;
> > +
> > + uint32_t sid_num;
> > + uint32_t md_num;
> > + uint32_t entry_num;
> > +} IopmpState;
> > +
> > +DeviceState *iopmp_create(hwaddr addr, qemu_irq irq);
> > +void cascade_iopmp(DeviceState *cur_dev, DeviceState *next_dev);
> > +
> > +#endif
> > diff --git a/include/hw/misc/riscv_iopmp_transaction_info.h
> > b/include/hw/misc/riscv_iopmp_transaction_info.h
> > new file mode 100644
> > index 0000000000..fd12fd214c
> > --- /dev/null
> > +++ b/include/hw/misc/riscv_iopmp_transaction_info.h
> > @@ -0,0 +1,28 @@
> > +/*
> > + * QEMU RISC-V IOPMP (Input Output Physical Memory Protection)
> > + *
> > + * Copyright (c) 2023 Andes Tech. Corp.
> > + *
> > + * 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_TRANSACTION_INFO_H
> > +#define RISCV_IOPMP_TRANSACTION_INFO_H
> > +
> > +typedef struct {
> > + uint32_t sid:16;
> > + uint64_t start_addr;
> > + uint64_t end_addr;
> > +} iopmp_transaction_info;
> > +
> > +#endif
> > --
> > 2.34.1
> >
> >