iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

[POWERPC] Only use H_BULK_REMOVE if the firmware supports it

Browse Source 
The previous patch changing pSeries to use H_BULK_REMOVE broke the
JS20 blade, where the firmware doesn't support H_BULK_REMOVE.  This
adds a firmware check so that on machines that don't have H_BULK_REMOVE,
we just use the H_REMOVE call as before.

Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Paul Mackerras 2007-02-08 15:02:35 +11:00
parent f03e64f2ca
commit 12e86f92fc
3 changed files with 16 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
arch/powerpc/platforms/pseries/firmware.c
View File

@ -59,6 +59,7 @@ firmware_features_table[FIRMWARE_MAX_FEATURES] = {
{FW_FEATURE_XDABR, "hcall-xdabr"},
{FW_FEATURE_MULTITCE, "hcall-multi-tce"},
{FW_FEATURE_SPLPAR, "hcall-splpar"},
{FW_FEATURE_BULK_REMOVE, "hcall-bulk"},
};
/* Build up the firmware features bitmask using the contents of

22
arch/powerpc/platforms/pseries/lpar.c
View File

@ -516,7 +516,7 @@ static void pSeries_lpar_hpte_invalidate(unsigned long slot, unsigned long va,
static void pSeries_lpar_flush_hash_range(unsigned long number, int local)
{
unsigned long i, pix, rc;
unsigned long flags;
unsigned long flags = 0;
struct ppc64_tlb_batch *batch = &__get_cpu_var(ppc64_tlb_batch);
int lock_tlbie = !cpu_has_feature(CPU_FTR_LOCKLESS_TLBIE);
unsigned long param[9];
@ -540,16 +540,22 @@ static void pSeries_lpar_flush_hash_range(unsigned long number, int local)
hash = ~hash;
slot = (hash & htab_hash_mask) * HPTES_PER_GROUP;
slot += hidx & _PTEIDX_GROUP_IX;
param[pix] = HBR_REQUEST | HBR_AVPN | slot;
param[pix+1] = hpte_encode_v(va, psize) & HPTE_V_AVPN;
pix += 2;
if (pix == 8) {
rc = plpar_hcall9(H_BULK_REMOVE, param,
if (!firmware_has_feature(FW_FEATURE_BULK_REMOVE)) {
pSeries_lpar_hpte_invalidate(slot, va, psize,
local);
} else {
param[pix] = HBR_REQUEST | HBR_AVPN | slot;
param[pix+1] = hpte_encode_v(va, psize) &
HPTE_V_AVPN;
pix += 2;
if (pix == 8) {
rc = plpar_hcall9(H_BULK_REMOVE, param,
param[0], param[1], param[2],
param[3], param[4], param[5],
param[6], param[7]);
BUG_ON(rc != H_SUCCESS);
pix = 0;
BUG_ON(rc != H_SUCCESS);
pix = 0;
}
}
} pte_iterate_hashed_end();
}

1
include/asm-powerpc/firmware.h
View File

@ -44,6 +44,7 @@
#define FW_FEATURE_LPAR ASM_CONST(0x0000000000400000)
#define FW_FEATURE_PS3_LV1 ASM_CONST(0x0000000000800000)
#define FW_FEATURE_BEAT ASM_CONST(0x0000000001000000)
#define FW_FEATURE_BULK_REMOVE ASM_CONST(0x0000000002000000)
#ifndef __ASSEMBLY__