author: Nicholas Piggin <npiggin@gmail.com> 2018-11-16 07:04:05 +0800
committer: Ley Foon Tan <ley.foon.tan@intel.com> 2019-03-07 05:29:35 +0800
commit: c6b1d363f883996e62bdb8655e472890d7dfd7ca
parent: e71c99fe8da9b8ab07b837a6f317c327d6a2b3df
Commit Summary:
Diffstat:
1 file changed, 32 insertions, 27 deletions
diff --git a/arch/nios2/mm/tlb.c b/arch/nios2/mm/tlb.c
index e87304e1fc3f..58c16d35f501 100644
--- a/arch/nios2/mm/tlb.c
+++ b/arch/nios2/mm/tlb.c
@@ -62,19 +62,20 @@ void flush_tlb_one_pid(unsigned long addr, unsigned long mmu_pid)
tlbmisc = TLBMISC_RD | (way << TLBMISC_WAY_SHIFT);
WRCTL(CTL_TLBMISC, tlbmisc);
+
pteaddr = RDCTL(CTL_PTEADDR);
+ if (((pteaddr >> 2) & 0xfffff) != (addr >> PAGE_SHIFT))
+ continue;
+
tlbmisc = RDCTL(CTL_TLBMISC);
pid = (tlbmisc >> TLBMISC_PID_SHIFT) & TLBMISC_PID_MASK;
- if (((((pteaddr >> 2) & 0xfffff)) == (addr >> PAGE_SHIFT)) &&
- pid == mmu_pid) {
- pr_debug("Flush entry by writing way=%dl pid=%ld\n",
- way, (pid_misc >> TLBMISC_PID_SHIFT));
+ if (pid != mmu_pid)
+ continue;
- WRCTL(CTL_PTEADDR, pteaddr_invalid(addr));
- tlbmisc = TLBMISC_WE | (way << TLBMISC_WAY_SHIFT);
- WRCTL(CTL_TLBMISC, tlbmisc);
- WRCTL(CTL_TLBACC, 0);
- }
+ tlbmisc = TLBMISC_WE | (way << TLBMISC_WAY_SHIFT);
+ WRCTL(CTL_TLBMISC, tlbmisc);
+ WRCTL(CTL_PTEADDR, pteaddr_invalid(addr));
+ WRCTL(CTL_TLBACC, 0);
}
WRCTL(CTL_TLBMISC, org_misc);
@@ -113,18 +114,18 @@ static void flush_tlb_one(unsigned long addr)
tlbmisc = TLBMISC_RD | (way << TLBMISC_WAY_SHIFT);
WRCTL(CTL_TLBMISC, tlbmisc);
+
pteaddr = RDCTL(CTL_PTEADDR);
- tlbmisc = RDCTL(CTL_TLBMISC);
+ if (((pteaddr >> 2) & 0xfffff) != (addr >> PAGE_SHIFT))
+ continue;
- if ((((pteaddr >> 2) & 0xfffff)) == (addr >> PAGE_SHIFT)) {
- pr_debug("Flush entry by writing way=%dl pid=%ld\n",
- way, (pid_misc >> TLBMISC_PID_SHIFT));
+ pr_debug("Flush entry by writing way=%dl pid=%ld\n",
+ way, (pid_misc >> TLBMISC_PID_SHIFT));
- WRCTL(CTL_PTEADDR, pteaddr_invalid(addr));
- tlbmisc = TLBMISC_WE | (way << TLBMISC_WAY_SHIFT);
- WRCTL(CTL_TLBMISC, tlbmisc);
- WRCTL(CTL_TLBACC, 0);
- }
+ tlbmisc = TLBMISC_WE | (way << TLBMISC_WAY_SHIFT);
+ WRCTL(CTL_TLBMISC, tlbmisc);
+ WRCTL(CTL_PTEADDR, pteaddr_invalid(addr));
+ WRCTL(CTL_TLBACC, 0);
}
WRCTL(CTL_TLBMISC, org_misc);
@@ -187,7 +188,7 @@ void dump_tlb(void)
dump_tlb_line(i);
}
-void flush_tlb_pid(unsigned long pid)
+void flush_tlb_pid(unsigned long mmu_pid)
{
unsigned long addr = 0;
unsigned int line;
@@ -202,17 +203,18 @@ void flush_tlb_pid(unsigned long pid)
for (way = 0; way < cpuinfo.tlb_num_ways; way++) {
unsigned long tlbmisc;
+ unsigned long pid;
tlbmisc = TLBMISC_RD | (way << TLBMISC_WAY_SHIFT);
WRCTL(CTL_TLBMISC, tlbmisc);
tlbmisc = RDCTL(CTL_TLBMISC);
+ pid = (tlbmisc >> TLBMISC_PID_SHIFT) & TLBMISC_PID_MASK;
+ if (pid != mmu_pid)
+ continue;
- if (((tlbmisc>>TLBMISC_PID_SHIFT) & TLBMISC_PID_MASK)
- == pid) {
- tlbmisc = TLBMISC_WE | (way << TLBMISC_WAY_SHIFT);
- WRCTL(CTL_TLBMISC, tlbmisc);
- WRCTL(CTL_TLBACC, 0);
- }
+ tlbmisc = TLBMISC_WE | (way << TLBMISC_WAY_SHIFT);
+ WRCTL(CTL_TLBMISC, tlbmisc);
+ WRCTL(CTL_TLBACC, 0);
}
addr += PAGE_SIZE;
@@ -265,6 +267,10 @@ void flush_tlb_all(void)
void set_mmu_pid(unsigned long pid)
{
- WRCTL(CTL_TLBMISC, (RDCTL(CTL_TLBMISC) & TLBMISC_WAY) |
- ((pid & TLBMISC_PID_MASK) << TLBMISC_PID_SHIFT));
+ unsigned long tlbmisc;
+
+ tlbmisc = RDCTL(CTL_TLBMISC);
+ tlbmisc = (tlbmisc & TLBMISC_WAY);
+ tlbmisc |= (pid & TLBMISC_PID_MASK) << TLBMISC_PID_SHIFT;
+ WRCTL(CTL_TLBMISC, tlbmisc);
}