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platform: Allow platforms to specify the size of tlb fifo

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For some platforms with a particularly high number of harts, if the
tlb fifo is too small, it case harts to wait. Platforms should be
allowed to specify the size of the tlb fifo.

Signed-off-by: Xiang W <wxjstz@126.com>
Signed-off-by: Xing Xiaoguang <xiaoguang.xing@sophgo.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
This commit is contained in:
Xiang W
2023-09-06 21:10:03 +08:00
committed by Anup Patel
parent 901d3d7bff
commit cacfba32cc
5 changed files with 29 additions and 4 deletions
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1
platform/generic/include/platform_override.h
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@@ -18,6 +18,7 @@ struct platform_override {
const struct fdt_match *match_table;
u64 (*features)(const struct fdt_match *match);
u64 (*tlbr_flush_limit)(const struct fdt_match *match);
u32 (*tlb_num_entries)(const struct fdt_match *match);
bool (*cold_boot_allowed)(u32 hartid, const struct fdt_match *match);
int (*early_init)(bool cold_boot, const struct fdt_match *match);
int (*final_init)(bool cold_boot, const struct fdt_match *match);

8
platform/generic/platform.c
View File

@@ -256,6 +256,13 @@ static u64 generic_tlbr_flush_limit(void)
return SBI_PLATFORM_TLB_RANGE_FLUSH_LIMIT_DEFAULT;
}
static u32 generic_tlb_num_entries(void)
{
if (generic_plat && generic_plat->tlb_num_entries)
return generic_plat->tlb_num_entries(generic_plat_match);
return SBI_PLATFORM_TLB_FIFO_NUM_ENTRIES;
}
static int generic_pmu_init(void)
{
return fdt_pmu_setup(fdt_get_address());
@@ -308,6 +315,7 @@ const struct sbi_platform_operations platform_ops = {
.pmu_init = generic_pmu_init,
.pmu_xlate_to_mhpmevent = generic_pmu_xlate_to_mhpmevent,
.get_tlbr_flush_limit = generic_tlbr_flush_limit,
.get_tlb_num_entries = generic_tlb_num_entries,
.timer_init = fdt_timer_init,
.timer_exit = fdt_timer_exit,
.vendor_ext_check = generic_vendor_ext_check,