From: Yong-Xuan Wang <yongxuan.wang@sifive.com>
To: qemu-devel@nongnu.org, qemu-riscv@nongnu.org
Cc: greentime.hu@sifive.com, vincent.chen@sifive.com,
frank.chang@sifive.com, jim.shu@sifive.com,
Yong-Xuan Wang <yongxuan.wang@sifive.com>,
Palmer Dabbelt <palmer@dabbelt.com>,
Alistair Francis <alistair.francis@wdc.com>,
Bin Meng <bin.meng@windriver.com>,
Weiwei Li <liwei1518@gmail.com>,
Daniel Henrique Barboza <dbarboza@ventanamicro.com>,
Liu Zhiwei <zhiwei_liu@linux.alibaba.com>
Subject: [PATCH 1/1] hw/riscv/virt.c: fix the interrupts-extended property format of PLIC
Date: Mon, 18 Dec 2023 09:05:40 +0000 [thread overview]
Message-ID: <20231218090543.22353-1-yongxuan.wang@sifive.com> (raw)
The interrupts-extended property of PLIC only has 2 * hart number
fields when KVM enabled, copy 4 * hart number fields to fdt will
expose some uninitialized value.
In this patch, I also refactor the code about the setting of
interrupts-extended property of PLIC for improved readability.
Signed-off-by: Yong-Xuan Wang <yongxuan.wang@sifive.com>
Reviewed-by: Jim Shu <jim.shu@sifive.com>
---
hw/riscv/virt.c | 47 +++++++++++++++++++++++++++--------------------
1 file changed, 27 insertions(+), 20 deletions(-)
diff --git a/hw/riscv/virt.c b/hw/riscv/virt.c
index d2eac2415619..e42baf82cab6 100644
--- a/hw/riscv/virt.c
+++ b/hw/riscv/virt.c
@@ -460,24 +460,6 @@ static void create_fdt_socket_plic(RISCVVirtState *s,
"sifive,plic-1.0.0", "riscv,plic0"
};
- if (kvm_enabled()) {
- plic_cells = g_new0(uint32_t, s->soc[socket].num_harts * 2);
- } else {
- plic_cells = g_new0(uint32_t, s->soc[socket].num_harts * 4);
- }
-
- for (cpu = 0; cpu < s->soc[socket].num_harts; cpu++) {
- if (kvm_enabled()) {
- plic_cells[cpu * 2 + 0] = cpu_to_be32(intc_phandles[cpu]);
- plic_cells[cpu * 2 + 1] = cpu_to_be32(IRQ_S_EXT);
- } else {
- plic_cells[cpu * 4 + 0] = cpu_to_be32(intc_phandles[cpu]);
- plic_cells[cpu * 4 + 1] = cpu_to_be32(IRQ_M_EXT);
- plic_cells[cpu * 4 + 2] = cpu_to_be32(intc_phandles[cpu]);
- plic_cells[cpu * 4 + 3] = cpu_to_be32(IRQ_S_EXT);
- }
- }
-
plic_phandles[socket] = (*phandle)++;
plic_addr = memmap[VIRT_PLIC].base + (memmap[VIRT_PLIC].size * socket);
plic_name = g_strdup_printf("/soc/plic@%lx", plic_addr);
@@ -490,8 +472,33 @@ static void create_fdt_socket_plic(RISCVVirtState *s,
(char **)&plic_compat,
ARRAY_SIZE(plic_compat));
qemu_fdt_setprop(ms->fdt, plic_name, "interrupt-controller", NULL, 0);
- qemu_fdt_setprop(ms->fdt, plic_name, "interrupts-extended",
- plic_cells, s->soc[socket].num_harts * sizeof(uint32_t) * 4);
+
+ if (kvm_enabled()) {
+ plic_cells = g_new0(uint32_t, s->soc[socket].num_harts * 2);
+
+ for (cpu = 0; cpu < s->soc[socket].num_harts; cpu++) {
+ plic_cells[cpu * 2 + 0] = cpu_to_be32(intc_phandles[cpu]);
+ plic_cells[cpu * 2 + 1] = cpu_to_be32(IRQ_S_EXT);
+ }
+
+ qemu_fdt_setprop(ms->fdt, plic_name, "interrupts-extended",
+ plic_cells,
+ s->soc[socket].num_harts * sizeof(uint32_t) * 2);
+ } else {
+ plic_cells = g_new0(uint32_t, s->soc[socket].num_harts * 4);
+
+ for (cpu = 0; cpu < s->soc[socket].num_harts; cpu++) {
+ plic_cells[cpu * 4 + 0] = cpu_to_be32(intc_phandles[cpu]);
+ plic_cells[cpu * 4 + 1] = cpu_to_be32(IRQ_M_EXT);
+ plic_cells[cpu * 4 + 2] = cpu_to_be32(intc_phandles[cpu]);
+ plic_cells[cpu * 4 + 3] = cpu_to_be32(IRQ_S_EXT);
+ }
+
+ qemu_fdt_setprop(ms->fdt, plic_name, "interrupts-extended",
+ plic_cells,
+ s->soc[socket].num_harts * sizeof(uint32_t) * 4);
+ }
+
qemu_fdt_setprop_cells(ms->fdt, plic_name, "reg",
0x0, plic_addr, 0x0, memmap[VIRT_PLIC].size);
qemu_fdt_setprop_cell(ms->fdt, plic_name, "riscv,ndev",
--
2.17.1
next reply other threads:[~2023-12-18 9:06 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-12-18 9:05 Yong-Xuan Wang [this message]
2023-12-18 9:05 ` [PATCH 1/1] target/riscv/kvm.c: remove group setting of KVM AIA if the machine only has 1 socket Yong-Xuan Wang
2023-12-18 21:42 ` Daniel Henrique Barboza
2023-12-18 21:20 ` [PATCH 1/1] hw/riscv/virt.c: fix the interrupts-extended property format of PLIC Daniel Henrique Barboza
2024-01-04 0:58 ` Alistair Francis
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