system/linux
system/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux synced 2024-10-03 09:48:02 +00:00
Code Issues Packages Projects Releases Wiki Activity

nios2: TLBMISC writes do not require PID bits to be set

Browse source 
TLBMISC_RD does not use PID bits, and when setting invalid TLBs,
the PID is not required because the address will not match.

This is just a tidy up.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>
This commit is contained in:
Nicholas Piggin 2018-11-12 23:03:35 +08:00 committed by Ley Foon Tan
parent 3437d3c886
commit 7d1730708b
1 changed files with 7 additions and 12 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

19
arch/nios2/mm/tlb.c
View file

@ -72,7 +72,7 @@ void flush_tlb_one_pid(unsigned long addr, unsigned long mmu_pid)
unsigned long tlbmisc;
unsigned long pid;
tlbmisc = pid_misc | TLBMISC_RD | (way << TLBMISC_WAY_SHIFT);
tlbmisc = TLBMISC_RD | (way << TLBMISC_WAY_SHIFT);
WRCTL(CTL_TLBMISC, tlbmisc);
pteaddr = RDCTL(CTL_PTEADDR);
tlbmisc = RDCTL(CTL_TLBMISC);
@ -83,8 +83,7 @@ void flush_tlb_one_pid(unsigned long addr, unsigned long mmu_pid)
way, (pid_misc >> TLBMISC_PID_SHIFT));
WRCTL(CTL_PTEADDR, pteaddr_invalid(addr));
tlbmisc = pid_misc | TLBMISC_WE |
(way << TLBMISC_WAY_SHIFT);
tlbmisc = TLBMISC_WE | (way << TLBMISC_WAY_SHIFT);
WRCTL(CTL_TLBMISC, tlbmisc);
WRCTL(CTL_TLBACC, 0);
}
@ -124,7 +123,7 @@ static void flush_tlb_one(unsigned long addr)
unsigned long pteaddr;
unsigned long tlbmisc;
tlbmisc = pid_misc | TLBMISC_RD | (way << TLBMISC_WAY_SHIFT);
tlbmisc = TLBMISC_RD | (way << TLBMISC_WAY_SHIFT);
WRCTL(CTL_TLBMISC, tlbmisc);
pteaddr = RDCTL(CTL_PTEADDR);
tlbmisc = RDCTL(CTL_TLBMISC);
@ -134,8 +133,7 @@ static void flush_tlb_one(unsigned long addr)
way, (pid_misc >> TLBMISC_PID_SHIFT));
WRCTL(CTL_PTEADDR, pteaddr_invalid(addr));
tlbmisc = pid_misc | TLBMISC_WE |
(way << TLBMISC_WAY_SHIFT);
tlbmisc = TLBMISC_WE | (way << TLBMISC_WAY_SHIFT);
WRCTL(CTL_TLBMISC, tlbmisc);
WRCTL(CTL_TLBACC, 0);
}
@ -217,15 +215,13 @@ void flush_tlb_pid(unsigned long pid)
for (way = 0; way < cpuinfo.tlb_num_ways; way++) {
unsigned long tlbmisc;
tlbmisc = pid_misc | TLBMISC_RD |
(way << TLBMISC_WAY_SHIFT);
tlbmisc = TLBMISC_RD | (way << TLBMISC_WAY_SHIFT);
WRCTL(CTL_TLBMISC, tlbmisc);
tlbmisc = RDCTL(CTL_TLBMISC);
if (((tlbmisc>>TLBMISC_PID_SHIFT) & TLBMISC_PID_MASK)
== pid) {
tlbmisc = pid_misc | TLBMISC_WE |
(way << TLBMISC_WAY_SHIFT);
tlbmisc = TLBMISC_WE | (way << TLBMISC_WAY_SHIFT);
WRCTL(CTL_TLBMISC, tlbmisc);
WRCTL(CTL_TLBACC, 0);
}
@ -246,7 +242,6 @@ void flush_tlb_all(void)
/* remember pid/way until we return */
get_misc_and_pid(&org_misc, &pid_misc);
pid_misc |= TLBMISC_WE;
/* Map each TLB entry to physcal address 0 with no-access and a
bad ptbase */
@ -254,7 +249,7 @@ void flush_tlb_all(void)
WRCTL(CTL_PTEADDR, pteaddr_invalid(addr));
for (way = 0; way < cpuinfo.tlb_num_ways; way++) {
tlbmisc = pid_misc | (way << TLBMISC_WAY_SHIFT);
tlbmisc = TLBMISC_WE | (way << TLBMISC_WAY_SHIFT);
WRCTL(CTL_TLBMISC, tlbmisc);
WRCTL(CTL_TLBACC, 0);
}