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aspeed/smc: Cache AspeedSMCClass

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Store a reference on the AspeedSMC class under the flash object and
use it when accessing the flash contents. Avoiding the class cast
checkers in these hot paths improves performance by 10% when running
the aspeed avocado tests.

Message-Id: <20220923084803.498337-7-clg@kaod.org>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
This commit is contained in:
Cédric Le Goater 2022-10-24 11:20:15 +02:00
parent db96605a49
commit b84a9482a3
2 changed files with 6 additions and 5 deletions
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9
hw/ssi/aspeed_smc.c
View File

@ -388,7 +388,7 @@ static inline int aspeed_smc_flash_cmd(const AspeedSMCFlash *fl)
static inline int aspeed_smc_flash_addr_width(const AspeedSMCFlash *fl)
{
const AspeedSMCState *s = fl->controller;
AspeedSMCClass *asc = ASPEED_SMC_GET_CLASS(s);
AspeedSMCClass *asc = fl->asc;
if (asc->addr_width) {
return asc->addr_width(s);
@ -420,7 +420,7 @@ static uint32_t aspeed_smc_check_segment_addr(const AspeedSMCFlash *fl,
uint32_t addr)
{
const AspeedSMCState *s = fl->controller;
AspeedSMCClass *asc = ASPEED_SMC_GET_CLASS(s);
AspeedSMCClass *asc = fl->asc;
AspeedSegments seg;
asc->reg_to_segment(s, s->regs[R_SEG_ADDR0 + fl->cs], &seg);
@ -1234,7 +1234,6 @@ static const TypeInfo aspeed_smc_info = {
static void aspeed_smc_flash_realize(DeviceState *dev, Error **errp)
{
AspeedSMCFlash *s = ASPEED_SMC_FLASH(dev);
AspeedSMCClass *asc;
g_autofree char *name = g_strdup_printf(TYPE_ASPEED_SMC_FLASH ".%d", s->cs);
if (!s->controller) {
@ -1242,14 +1241,14 @@ static void aspeed_smc_flash_realize(DeviceState *dev, Error **errp)
return;
}
asc = ASPEED_SMC_GET_CLASS(s->controller);
s->asc = ASPEED_SMC_GET_CLASS(s->controller);
/*
* Use the default segment value to size the memory region. This
* can be changed by FW at runtime.
*/
memory_region_init_io(&s->mmio, OBJECT(s), &aspeed_smc_flash_ops,
s, name, asc->segments[s->cs].size);
s, name, s->asc->segments[s->cs].size);
sysbus_init_mmio(SYS_BUS_DEVICE(dev), &s->mmio);
}

2
include/hw/ssi/aspeed_smc.h
View File

@ -30,6 +30,7 @@
#include "qom/object.h"
struct AspeedSMCState;
struct AspeedSMCClass;
#define TYPE_ASPEED_SMC_FLASH "aspeed.smc.flash"
OBJECT_DECLARE_SIMPLE_TYPE(AspeedSMCFlash, ASPEED_SMC_FLASH)
@ -37,6 +38,7 @@ struct AspeedSMCFlash {
SysBusDevice parent_obj;
struct AspeedSMCState *controller;
struct AspeedSMCClass *asc;
uint8_t cs;
MemoryRegion mmio;