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lib: utils: Improve rpmi_cppc_fc_db_trigger() for RV32

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Improve 64-bit operation under rv32 and remove db_val_u32_hi
in rpmi_cppc_fc_db_trigger().

Signed-off-by: Xiang W <wxjstz@126.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
This commit is contained in:
Xiang W
2024-12-15 19:25:44 +08:00
committed by Anup Patel
parent 51dbc57fc7
commit f069301654
1 changed files with 7 additions and 14 deletions
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21
lib/utils/cppc/fdt_cppc_rpmi.c
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@@ -59,11 +59,7 @@ static void rpmi_cppc_fc_db_trigger(struct rpmi_cppc *cppc)
u8 db_val_u8 = 0;
u16 db_val_u16 = 0;
u32 db_val_u32 = 0;
#if __riscv_xlen != 32
u64 db_val_u64 = 0;
#else
u32 db_val_u32_hi = 0;
#endif
switch (cppc->fc_db_width) {
case RPMI_CPPC_FAST_CHANNEL_DB_WIDTH_8:
@@ -95,16 +91,13 @@ static void rpmi_cppc_fc_db_trigger(struct rpmi_cppc *cppc)
writeq(db_val_u64, (void *)cppc->fc_db_addr);
#else
db_val_u32 = readl((void *)cppc->fc_db_addr);
db_val_u32_hi = readl((void *)(cppc->fc_db_addr + 4));
db_val_u32 = (u32)cppc->fc_db_setmask |
(db_val_u32 & (u32)cppc->fc_db_preservemask);
db_val_u32_hi = (u32)(cppc->fc_db_setmask >> 32) |
(db_val_u32 & (u32)(cppc->fc_db_preservemask >> 32));
writel(db_val_u32, (void *)cppc->fc_db_addr);
writel(db_val_u32_hi, (void *)(cppc->fc_db_addr + 4));
db_val_u64 = readl((void *)(cppc->fc_db_addr + 4));
db_val_u64 <<= 32;
db_val_u64 |= readl((void *)cppc->fc_db_addr);
db_val_u64 = cppc->fc_db_setmask |
(db_val_u64 & cppc->fc_db_preservemask);
writel(db_val_u64, (void *)cppc->fc_db_addr);
writel(db_val_u64 >> 32, (void *)(cppc->fc_db_addr + 4));
#endif
break;
default: