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[PATCH v8 3/8] target/riscv: Add support for IOPMP
From: |
Ethan Chen |
Subject: |
[PATCH v8 3/8] target/riscv: Add support for IOPMP |
Date: |
Mon, 15 Jul 2024 17:56:57 +0800 |
Signed-off-by: Ethan Chen <ethan84@andestech.com>
---
target/riscv/cpu_cfg.h | 2 ++
target/riscv/cpu_helper.c | 18 +++++++++++++++---
2 files changed, 17 insertions(+), 3 deletions(-)
diff --git a/target/riscv/cpu_cfg.h b/target/riscv/cpu_cfg.h
index fb7eebde52..2946fec20c 100644
--- a/target/riscv/cpu_cfg.h
+++ b/target/riscv/cpu_cfg.h
@@ -164,6 +164,8 @@ struct RISCVCPUConfig {
bool pmp;
bool debug;
bool misa_w;
+ bool iopmp;
+ uint32_t iopmp_rrid;
bool short_isa_string;
diff --git a/target/riscv/cpu_helper.c b/target/riscv/cpu_helper.c
index 6709622dd3..c2d6a874da 100644
--- a/target/riscv/cpu_helper.c
+++ b/target/riscv/cpu_helper.c
@@ -1418,9 +1418,21 @@ bool riscv_cpu_tlb_fill(CPUState *cs, vaddr address, int
size,
}
if (ret == TRANSLATE_SUCCESS) {
- tlb_set_page(cs, address & ~(tlb_size - 1), pa & ~(tlb_size - 1),
- prot, mmu_idx, tlb_size);
- return true;
+ if (cpu->cfg.iopmp) {
+ /*
+ * Do not align address on early stage because IOPMP needs origin
+ * address for permission check.
+ */
+ tlb_set_page_with_attrs(cs, address, pa,
+ (MemTxAttrs)
+ {
+ .requester_id = cpu->cfg.iopmp_rrid,
+ },
+ prot, mmu_idx, tlb_size);
+ } else {
+ tlb_set_page(cs, address & ~(tlb_size - 1), pa & ~(tlb_size - 1),
+ prot, mmu_idx, tlb_size);
+ }
} else if (probe) {
return false;
} else {
--
2.34.1
- [PATCH v8 0/8] Support RISC-V IOPMP, Ethan Chen, 2024/07/15
- [PATCH v8 1/8] memory: Introduce memory region fetch operation, Ethan Chen, 2024/07/15
- [PATCH v8 2/8] system/physmem: Support IOMMU granularity smaller than TARGET_PAGE size, Ethan Chen, 2024/07/15
- [PATCH v8 3/8] target/riscv: Add support for IOPMP,
Ethan Chen <=
- [PATCH v8 4/8] hw/misc/riscv_iopmp: Add RISC-V IOPMP device, Ethan Chen, 2024/07/15
- [PATCH v8 5/8] hw/misc/riscv_iopmp: Add API to set up IOPMP protection for system memory, Ethan Chen, 2024/07/15
- [PATCH v8 6/8] hw/misc/riscv_iopmp: Add API to configure RISCV CPU IOPMP support, Ethan Chen, 2024/07/15
- [PATCH v8 7/8] hw/misc/riscv_iopmp: Add DMA operation with IOPMP support API, Ethan Chen, 2024/07/15
- [PATCH v8 8/8] hw/riscv/virt: Add IOPMP support, Ethan Chen, 2024/07/15