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hw/intc/loongarch_ipi: Use MemTxAttrs interface for ipi ops

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There are two interface pairs for MemoryRegionOps, read/write and
read_with_attrs/write_with_attrs. The later is better for ipi device
emulation since initial cpu can be parsed from attrs.requester_id.

And requester_id can be overrided for IOCSR_IPI_SEND and mail_send
function when it is to forward message to another vcpu.

Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Reviewed-by: Song Gao <gaosong@loongson.cn>
Message-Id: <20231215100333.3933632-2-maobibo@loongson.cn>
Signed-off-by: Song Gao <gaosong@loongson.cn>
This commit is contained in:
Bibo Mao 2023-12-13 12:12:01 +08:00 committed by Song Gao
parent 714b03c125
commit fdd6ee0b76
1 changed files with 77 additions and 59 deletions
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138
hw/intc/loongarch_ipi.c
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@ -17,14 +17,16 @@
#include "target/loongarch/internals.h"
#include "trace.h"
static void loongarch_ipi_writel(void *, hwaddr, uint64_t, unsigned);
static uint64_t loongarch_ipi_readl(void *opaque, hwaddr addr, unsigned size)
static MemTxResult loongarch_ipi_readl(void *opaque, hwaddr addr,
uint64_t *data,
unsigned size, MemTxAttrs attrs)
{
IPICore *s = opaque;
IPICore *s;
LoongArchIPI *ipi = opaque;
uint64_t ret = 0;
int index = 0;
s = &ipi->ipi_core;
addr &= 0xff;
switch (addr) {
case CORE_STATUS_OFF:
@ -49,10 +51,12 @@ static uint64_t loongarch_ipi_readl(void *opaque, hwaddr addr, unsigned size)
}
trace_loongarch_ipi_read(size, (uint64_t)addr, ret);
return ret;
*data = ret;
return MEMTX_OK;
}
static void send_ipi_data(CPULoongArchState *env, uint64_t val, hwaddr addr)
static void send_ipi_data(CPULoongArchState *env, uint64_t val, hwaddr addr,
MemTxAttrs attrs)
{
int i, mask = 0, data = 0;
@ -62,7 +66,7 @@ static void send_ipi_data(CPULoongArchState *env, uint64_t val, hwaddr addr)
*/
if ((val >> 27) & 0xf) {
data = address_space_ldl(&env->address_space_iocsr, addr,
MEMTXATTRS_UNSPECIFIED, NULL);
attrs, NULL);
for (i = 0; i < 4; i++) {
/* get mask for byte writing */
if (val & (0x1 << (27 + i))) {
@ -74,7 +78,7 @@ static void send_ipi_data(CPULoongArchState *env, uint64_t val, hwaddr addr)
data &= mask;
data |= (val >> 32) & ~mask;
address_space_stl(&env->address_space_iocsr, addr,
data, MEMTXATTRS_UNSPECIFIED, NULL);
data, attrs, NULL);
}
static int archid_cmp(const void *a, const void *b)
@ -103,80 +107,72 @@ static CPUState *ipi_getcpu(int arch_id)
CPUArchId *archid;
archid = find_cpu_by_archid(machine, arch_id);
if (archid) {
return CPU(archid->cpu);
}
static void ipi_send(uint64_t val)
{
uint32_t cpuid;
uint8_t vector;
CPUState *cs;
LoongArchCPU *cpu;
LoongArchIPI *s;
cpuid = extract32(val, 16, 10);
if (cpuid >= LOONGARCH_MAX_CPUS) {
trace_loongarch_ipi_unsupported_cpuid("IOCSR_IPI_SEND", cpuid);
return;
return NULL;
}
/* IPI status vector */
vector = extract8(val, 0, 5);
cs = ipi_getcpu(cpuid);
cpu = LOONGARCH_CPU(cs);
s = LOONGARCH_IPI(cpu->env.ipistate);
loongarch_ipi_writel(&s->ipi_core, CORE_SET_OFF, BIT(vector), 4);
}
static void mail_send(uint64_t val)
static MemTxResult mail_send(uint64_t val, MemTxAttrs attrs)
{
uint32_t cpuid;
hwaddr addr;
CPULoongArchState *env;
CPUState *cs;
LoongArchCPU *cpu;
cpuid = extract32(val, 16, 10);
if (cpuid >= LOONGARCH_MAX_CPUS) {
trace_loongarch_ipi_unsupported_cpuid("IOCSR_MAIL_SEND", cpuid);
return;
return MEMTX_DECODE_ERROR;
}
addr = 0x1020 + (val & 0x1c);
cs = ipi_getcpu(cpuid);
cpu = LOONGARCH_CPU(cs);
env = &cpu->env;
send_ipi_data(env, val, addr);
if (cs == NULL) {
return MEMTX_DECODE_ERROR;
}
static void any_send(uint64_t val)
/* override requester_id */
addr = SMP_IPI_MAILBOX + CORE_BUF_20 + (val & 0x1c);
attrs.requester_id = cs->cpu_index;
send_ipi_data(&LOONGARCH_CPU(cs)->env, val, addr, attrs);
return MEMTX_OK;
}
static MemTxResult any_send(uint64_t val, MemTxAttrs attrs)
{
uint32_t cpuid;
hwaddr addr;
CPULoongArchState *env;
CPUState *cs;
LoongArchCPU *cpu;
cpuid = extract32(val, 16, 10);
if (cpuid >= LOONGARCH_MAX_CPUS) {
trace_loongarch_ipi_unsupported_cpuid("IOCSR_ANY_SEND", cpuid);
return;
return MEMTX_DECODE_ERROR;
}
addr = val & 0xffff;
cs = ipi_getcpu(cpuid);
cpu = LOONGARCH_CPU(cs);
env = &cpu->env;
send_ipi_data(env, val, addr);
if (cs == NULL) {
return MEMTX_DECODE_ERROR;
}
static void loongarch_ipi_writel(void *opaque, hwaddr addr, uint64_t val,
unsigned size)
{
IPICore *s = opaque;
int index = 0;
/* override requester_id */
addr = val & 0xffff;
attrs.requester_id = cs->cpu_index;
send_ipi_data(&LOONGARCH_CPU(cs)->env, val, addr, attrs);
return MEMTX_OK;
}
static MemTxResult loongarch_ipi_writel(void *opaque, hwaddr addr, uint64_t val,
unsigned size, MemTxAttrs attrs)
{
LoongArchIPI *ipi = opaque;
IPICore *s;
int index = 0;
uint32_t cpuid;
uint8_t vector;
CPUState *cs;
s = &ipi->ipi_core;
addr &= 0xff;
trace_loongarch_ipi_write(size, (uint64_t)addr, val);
switch (addr) {
@ -203,17 +199,35 @@ static void loongarch_ipi_writel(void *opaque, hwaddr addr, uint64_t val,
s->buf[index] = val;
break;
case IOCSR_IPI_SEND:
ipi_send(val);
cpuid = extract32(val, 16, 10);
if (cpuid >= LOONGARCH_MAX_CPUS) {
trace_loongarch_ipi_unsupported_cpuid("IOCSR_IPI_SEND", cpuid);
return MEMTX_DECODE_ERROR;
}
/* IPI status vector */
vector = extract8(val, 0, 5);
cs = ipi_getcpu(cpuid);
if (cs == NULL) {
return MEMTX_DECODE_ERROR;
}
/* override requester_id */
attrs.requester_id = cs->cpu_index;
ipi = LOONGARCH_IPI(LOONGARCH_CPU(cs)->env.ipistate);
loongarch_ipi_writel(ipi, CORE_SET_OFF, BIT(vector), 4, attrs);
break;
default:
qemu_log_mask(LOG_UNIMP, "invalid write: %x", (uint32_t)addr);
break;
}
return MEMTX_OK;
}
static const MemoryRegionOps loongarch_ipi_ops = {
.read = loongarch_ipi_readl,
.write = loongarch_ipi_writel,
.read_with_attrs = loongarch_ipi_readl,
.write_with_attrs = loongarch_ipi_writel,
.impl.min_access_size = 4,
.impl.max_access_size = 4,
.valid.min_access_size = 4,
@ -222,24 +236,28 @@ static const MemoryRegionOps loongarch_ipi_ops = {
};
/* mail send and any send only support writeq */
static void loongarch_ipi_writeq(void *opaque, hwaddr addr, uint64_t val,
unsigned size)
static MemTxResult loongarch_ipi_writeq(void *opaque, hwaddr addr, uint64_t val,
unsigned size, MemTxAttrs attrs)
{
MemTxResult ret = MEMTX_OK;
addr &= 0xfff;
switch (addr) {
case MAIL_SEND_OFFSET:
mail_send(val);
ret = mail_send(val, attrs);
break;
case ANY_SEND_OFFSET:
any_send(val);
ret = any_send(val, attrs);
break;
default:
break;
}
return ret;
}
static const MemoryRegionOps loongarch_ipi64_ops = {
.write = loongarch_ipi_writeq,
.write_with_attrs = loongarch_ipi_writeq,
.impl.min_access_size = 8,
.impl.max_access_size = 8,
.valid.min_access_size = 8,
@ -253,7 +271,7 @@ static void loongarch_ipi_init(Object *obj)
SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
memory_region_init_io(&s->ipi_iocsr_mem, obj, &loongarch_ipi_ops,
&s->ipi_core, "loongarch_ipi_iocsr", 0x48);
s, "loongarch_ipi_iocsr", 0x48);
/* loongarch_ipi_iocsr performs re-entrant IO through ipi_send */
s->ipi_iocsr_mem.disable_reentrancy_guard = true;
@ -261,7 +279,7 @@ static void loongarch_ipi_init(Object *obj)
sysbus_init_mmio(sbd, &s->ipi_iocsr_mem);
memory_region_init_io(&s->ipi64_iocsr_mem, obj, &loongarch_ipi64_ops,
&s->ipi_core, "loongarch_ipi64_iocsr", 0x118);
s, "loongarch_ipi64_iocsr", 0x118);
sysbus_init_mmio(sbd, &s->ipi64_iocsr_mem);
qdev_init_gpio_out(DEVICE(obj), &s->ipi_core.irq, 1);
}