diff options
| author | Genevieve Chan <genevieve.chan@starfivetech.com> | 2023-05-18 11:37:14 +0300 |
|---|---|---|
| committer | Genevieve Chan <genevieve.chan@starfivetech.com> | 2023-05-18 11:37:14 +0300 |
| commit | ff985349fde2d641ec82a181f9874dce55f71f19 (patch) | |
| tree | 7abf4cdb10e9ce889583c5c0fb1b3956a72d67ef | |
| parent | 6aeb74b1711c9b1e57520b6d609ad1e86dff521d (diff) | |
| download | opensbi-ff985349fde2d641ec82a181f9874dce55f71f19.tar.xz | |
platform: generic: starfive: Issue fence instruction out of the loop
This patch shifts the fence instruction outside of the loop in
sbi_dubhe_L2_inv_range and sbi_dubhe_L2_flush_range. Fence should
only be called once at the beginning and once at the end of the flush
or invalidate operation
Signed-off-by: Genevieve Chan <genevieve.chan@starfivetech.com>
| -rwxr-xr-x | platform/generic/starfive/dubhe_cache.S | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/platform/generic/starfive/dubhe_cache.S b/platform/generic/starfive/dubhe_cache.S index 9ab8895..de28418 100755 --- a/platform/generic/starfive/dubhe_cache.S +++ b/platform/generic/starfive/dubhe_cache.S @@ -27,14 +27,15 @@ __sbi_dubhe_L2_inv_range: add a1, a1, a0 /* Compute end address */ not t2, t1 and a0, a0, t2 + fence rw, rw 1: /* CDISCARD.L2 rs1 = a0 */ - fence rw, rw .insn i 0x73, 0, x0, a0, -0x3A - fence rw, rw + add a0, a0, t0 blt a0, a1, 1b 2: + fence rw, rw ret /* @@ -55,12 +56,12 @@ __sbi_dubhe_L2_flush_range: add a1, a1, a0 /* Compute end address */ not t2, t1 and a0, a0, t2 + fence rw, rw 1: /* CFLUSH.L2 rs1 = a0 */ - fence rw, rw .insn i 0x73, 0, x0, a0, -0x3C - fence rw, rw add a0, a0, t0 blt a0, a1, 1b 2: + fence rw, rw ret |