From: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
To: qemu-devel@nongnu.org
Cc: qemu-riscv@nongnu.org, alistair.francis@wdc.com,
liwei1518@gmail.com, zhiwei_liu@linux.alibaba.com,
palmer@rivosinc.com,
Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Subject: [PATCH 1/9] hw/riscv/virt.c: enforce s->memmap use in machine_init()
Date: Wed, 23 Apr 2025 08:06:22 -0300 [thread overview]
Message-ID: <20250423110630.2249904-2-dbarboza@ventanamicro.com> (raw)
In-Reply-To: <20250423110630.2249904-1-dbarboza@ventanamicro.com>
Throughout the code we're accessing the board memmap, most of the time,
by accessing it statically via 'virt_memmap'. This static map is also
assigned in the machine state in s->memmap.
We're also passing it as a variable to some fdt functions, which is
unorthodox since we can spare a function argument by accessing it
statically or via the machine state.
All the current forms are valid but not all of the are scalable. In the
future we will version this board, and then all this code will need
rework because it should point to the updated memmap. In this case,
we'll want to assign the adequate versioned memmap once during init,
in s->memmap like it is being done today, and the rest of the code
will access the updated map via s->memmap.
We're also enforcing the pattern of using s->memmap instead of assigning
it to a temp variable 'memmap'. Code is copy/pasted around all the time
and being consistent is important.
We'll start these rather mechanical changes with virt_machine_init().
Signed-off-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
---
hw/riscv/virt.c | 54 ++++++++++++++++++++++++-------------------------
1 file changed, 27 insertions(+), 27 deletions(-)
diff --git a/hw/riscv/virt.c b/hw/riscv/virt.c
index c9d255d8a8..6e3e34879f 100644
--- a/hw/riscv/virt.c
+++ b/hw/riscv/virt.c
@@ -1527,7 +1527,6 @@ static void virt_machine_done(Notifier *notifier, void *data)
static void virt_machine_init(MachineState *machine)
{
- const MemMapEntry *memmap = virt_memmap;
RISCVVirtState *s = RISCV_VIRT_MACHINE(machine);
MemoryRegion *system_memory = get_system_memory();
MemoryRegion *mask_rom = g_new(MemoryRegion, 1);
@@ -1535,6 +1534,8 @@ static void virt_machine_init(MachineState *machine)
int i, base_hartid, hart_count;
int socket_count = riscv_socket_count(machine);
+ s->memmap = virt_memmap;
+
/* Check socket count limit */
if (VIRT_SOCKETS_MAX < socket_count) {
error_report("number of sockets/nodes should be less than %d",
@@ -1582,7 +1583,7 @@ static void virt_machine_init(MachineState *machine)
if (virt_aclint_allowed() && s->have_aclint) {
if (s->aia_type == VIRT_AIA_TYPE_APLIC_IMSIC) {
/* Per-socket ACLINT MTIMER */
- riscv_aclint_mtimer_create(memmap[VIRT_CLINT].base +
+ riscv_aclint_mtimer_create(s->memmap[VIRT_CLINT].base +
i * RISCV_ACLINT_DEFAULT_MTIMER_SIZE,
RISCV_ACLINT_DEFAULT_MTIMER_SIZE,
base_hartid, hart_count,
@@ -1591,28 +1592,28 @@ static void virt_machine_init(MachineState *machine)
RISCV_ACLINT_DEFAULT_TIMEBASE_FREQ, true);
} else {
/* Per-socket ACLINT MSWI, MTIMER, and SSWI */
- riscv_aclint_swi_create(memmap[VIRT_CLINT].base +
- i * memmap[VIRT_CLINT].size,
+ riscv_aclint_swi_create(s->memmap[VIRT_CLINT].base +
+ i * s->memmap[VIRT_CLINT].size,
base_hartid, hart_count, false);
- riscv_aclint_mtimer_create(memmap[VIRT_CLINT].base +
- i * memmap[VIRT_CLINT].size +
+ riscv_aclint_mtimer_create(s->memmap[VIRT_CLINT].base +
+ i * s->memmap[VIRT_CLINT].size +
RISCV_ACLINT_SWI_SIZE,
RISCV_ACLINT_DEFAULT_MTIMER_SIZE,
base_hartid, hart_count,
RISCV_ACLINT_DEFAULT_MTIMECMP,
RISCV_ACLINT_DEFAULT_MTIME,
RISCV_ACLINT_DEFAULT_TIMEBASE_FREQ, true);
- riscv_aclint_swi_create(memmap[VIRT_ACLINT_SSWI].base +
- i * memmap[VIRT_ACLINT_SSWI].size,
+ riscv_aclint_swi_create(s->memmap[VIRT_ACLINT_SSWI].base +
+ i * s->memmap[VIRT_ACLINT_SSWI].size,
base_hartid, hart_count, true);
}
} else if (tcg_enabled()) {
/* Per-socket SiFive CLINT */
riscv_aclint_swi_create(
- memmap[VIRT_CLINT].base + i * memmap[VIRT_CLINT].size,
+ s->memmap[VIRT_CLINT].base + i * s->memmap[VIRT_CLINT].size,
base_hartid, hart_count, false);
- riscv_aclint_mtimer_create(memmap[VIRT_CLINT].base +
- i * memmap[VIRT_CLINT].size + RISCV_ACLINT_SWI_SIZE,
+ riscv_aclint_mtimer_create(s->memmap[VIRT_CLINT].base +
+ i * s->memmap[VIRT_CLINT].size + RISCV_ACLINT_SWI_SIZE,
RISCV_ACLINT_DEFAULT_MTIMER_SIZE, base_hartid, hart_count,
RISCV_ACLINT_DEFAULT_MTIMECMP, RISCV_ACLINT_DEFAULT_MTIME,
RISCV_ACLINT_DEFAULT_TIMEBASE_FREQ, true);
@@ -1620,11 +1621,11 @@ static void virt_machine_init(MachineState *machine)
/* Per-socket interrupt controller */
if (s->aia_type == VIRT_AIA_TYPE_NONE) {
- s->irqchip[i] = virt_create_plic(memmap, i,
+ s->irqchip[i] = virt_create_plic(s->memmap, i,
base_hartid, hart_count);
} else {
s->irqchip[i] = virt_create_aia(s->aia_type, s->aia_guests,
- memmap, i, base_hartid,
+ s->memmap, i, base_hartid,
hart_count);
}
@@ -1646,8 +1647,8 @@ static void virt_machine_init(MachineState *machine)
if (kvm_enabled() && virt_use_kvm_aia_aplic_imsic(s->aia_type)) {
kvm_riscv_aia_create(machine, IMSIC_MMIO_GROUP_MIN_SHIFT,
VIRT_IRQCHIP_NUM_SOURCES, VIRT_IRQCHIP_NUM_MSIS,
- memmap[VIRT_APLIC_S].base,
- memmap[VIRT_IMSIC_S].base,
+ s->memmap[VIRT_APLIC_S].base,
+ s->memmap[VIRT_IMSIC_S].base,
s->aia_guests);
}
@@ -1663,21 +1664,20 @@ static void virt_machine_init(MachineState *machine)
virt_high_pcie_memmap.size = VIRT32_HIGH_PCIE_MMIO_SIZE;
} else {
virt_high_pcie_memmap.size = VIRT64_HIGH_PCIE_MMIO_SIZE;
- virt_high_pcie_memmap.base = memmap[VIRT_DRAM].base + machine->ram_size;
+ virt_high_pcie_memmap.base = s->memmap[VIRT_DRAM].base +
+ machine->ram_size;
virt_high_pcie_memmap.base =
ROUND_UP(virt_high_pcie_memmap.base, virt_high_pcie_memmap.size);
}
- s->memmap = virt_memmap;
-
/* register system main memory (actual RAM) */
- memory_region_add_subregion(system_memory, memmap[VIRT_DRAM].base,
- machine->ram);
+ memory_region_add_subregion(system_memory, s->memmap[VIRT_DRAM].base,
+ machine->ram);
/* boot rom */
memory_region_init_rom(mask_rom, NULL, "riscv_virt_board.mrom",
- memmap[VIRT_MROM].size, &error_fatal);
- memory_region_add_subregion(system_memory, memmap[VIRT_MROM].base,
+ s->memmap[VIRT_MROM].size, &error_fatal);
+ memory_region_add_subregion(system_memory, s->memmap[VIRT_MROM].base,
mask_rom);
/*
@@ -1688,12 +1688,12 @@ static void virt_machine_init(MachineState *machine)
rom_set_fw(s->fw_cfg);
/* SiFive Test MMIO device */
- sifive_test_create(memmap[VIRT_TEST].base);
+ sifive_test_create(s->memmap[VIRT_TEST].base);
/* VirtIO MMIO devices */
for (i = 0; i < VIRTIO_COUNT; i++) {
sysbus_create_simple("virtio-mmio",
- memmap[VIRT_VIRTIO].base + i * memmap[VIRT_VIRTIO].size,
+ s->memmap[VIRT_VIRTIO].base + i * s->memmap[VIRT_VIRTIO].size,
qdev_get_gpio_in(virtio_irqchip, VIRTIO_IRQ + i));
}
@@ -1701,11 +1701,11 @@ static void virt_machine_init(MachineState *machine)
create_platform_bus(s, mmio_irqchip);
- serial_mm_init(system_memory, memmap[VIRT_UART0].base,
+ serial_mm_init(system_memory, s->memmap[VIRT_UART0].base,
0, qdev_get_gpio_in(mmio_irqchip, UART0_IRQ), 399193,
serial_hd(0), DEVICE_LITTLE_ENDIAN);
- sysbus_create_simple("goldfish_rtc", memmap[VIRT_RTC].base,
+ sysbus_create_simple("goldfish_rtc", s->memmap[VIRT_RTC].base,
qdev_get_gpio_in(mmio_irqchip, RTC_IRQ));
for (i = 0; i < ARRAY_SIZE(s->flash); i++) {
@@ -1723,7 +1723,7 @@ static void virt_machine_init(MachineState *machine)
exit(1);
}
} else {
- create_fdt(s, memmap);
+ create_fdt(s, s->memmap);
}
if (virt_is_iommu_sys_enabled(s)) {
--
2.49.0
next prev parent reply other threads:[~2025-04-23 11:07 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-04-23 11:06 [PATCH 0/9] hw/riscv/virt.c: memmap usage cleanup Daniel Henrique Barboza
2025-04-23 11:06 ` Daniel Henrique Barboza [this message]
2025-04-24 9:51 ` [PATCH 1/9] hw/riscv/virt.c: enforce s->memmap use in machine_init() Joel Stanley
2025-04-25 11:52 ` Daniel Henrique Barboza
2025-04-29 5:25 ` Joel Stanley
2025-04-29 10:27 ` Conor Dooley
2025-04-24 10:39 ` Alistair Francis
2025-04-23 11:06 ` [PATCH 2/9] hw/riscv/virt.c: remove trivial virt_memmap references Daniel Henrique Barboza
2025-04-23 11:06 ` [PATCH 3/9] hw/riscv/virt.c: use s->memmap in virt_machine_done() Daniel Henrique Barboza
2025-04-23 11:06 ` [PATCH 4/9] hw/riscv/virt.c: add 'base' arg in create_fw_cfg() Daniel Henrique Barboza
2025-04-23 11:06 ` [PATCH 5/9] hw/riscv/virt.c: use s->memmap in create_fdt() path Daniel Henrique Barboza
2025-04-23 11:06 ` [PATCH 6/9] hw/riscv/virt.c: use s->memmap in create_fdt_sockets() path Daniel Henrique Barboza
2025-04-23 11:06 ` [PATCH 7/9] hw/riscv/virt.c: use s->memmap in create_fdt_virtio() Daniel Henrique Barboza
2025-04-23 11:06 ` [PATCH 8/9] hw/riscv/virt.c: use s->memmap in finalize_fdt() functions Daniel Henrique Barboza
2025-04-23 11:06 ` [PATCH 9/9] hw/riscv/virt.c: remove 'long' casts in fmt strings Daniel Henrique Barboza
2025-04-23 11:26 ` Philippe Mathieu-Daudé
2025-04-24 9:41 ` Joel Stanley
2025-04-25 12:33 ` Daniel Henrique Barboza
2025-04-29 5:26 ` Joel Stanley
2025-04-29 12:40 ` Daniel Henrique Barboza
2025-04-29 17:11 ` Daniel Henrique Barboza
2025-04-30 11:28 ` Joel Stanley
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