Add new field in show-details to report Sync Write Cache support for a
given IOA. This will only be displayed when passing an IOA to command
'show-details'.
This field tells if the adapter has support to sync cache
enabled/implemented. It does not mean that sync cache is enabled
for a specific device. It has three states: Unsupported - in
case adapter doesn't support it; Enabled - if Sync Cache is
supported and is globally enabled for this adapter; Disabled - in case
it is supported but was disabled for the whole adapter.
The information is recovered from the device using the Query Cache
Parameters command. It can return a new value now, indicating if Volume
Set Caching Mode Page is enabled.
Signed-off-by: Gabriel Krisman Bertazi <kris...@linux.vnet.ibm.com>
---
iprconfig.c | 27 +++++++++++++++++++++++++++
iprlib.c | 8 +++++++-
iprlib.h | 13 ++++++++++---
3 files changed, 44 insertions(+), 4 deletions(-)
diff --git a/iprconfig.c b/iprconfig.c
index 2ee1e5a..e591655 100644
--- a/iprconfig.c
+++ b/iprconfig.c
@@ -2046,6 +2046,7 @@ static char *ioa_details(char *body, struct ipr_dev *dev)
struct ipr_inquiry_page0 page0_inq;
struct scsi_dev_data *scsi_dev_data = dev->scsi_dev_data;
struct ipr_dual_ioa_entry *ioa_entry;
+ struct ipr_reclaim_query_data *reclaim_data = dev->ioa->reclaim_data;
int rc, i;
char buffer[200];
int cache_size, dram_size;
@@ -2166,6 +2167,32 @@ static char *ioa_details(char *body, struct ipr_dev *dev)
body = add_line_to_body(body,_("Current Requested
Caching Mode"), _("Default"));
}
+ if (dev->ioa->has_cache) {
+ if (dev->ioa->vset_write_cache) {
+ strcpy(buffer, "Synchronize Cache");
+ } else {
+ if (!reclaim_data) {
+ reclaim_data =
+ calloc(1, sizeof(struct
ipr_reclaim_query_data));
+ rc = ipr_reclaim_cache_store(dev->ioa,
+ IPR_RECLAIM_QUERY,
+ reclaim_data);
+ if (rc) {
+ free(reclaim_data);
+ goto out;
+ }
+ dev->ioa->reclaim_data = reclaim_data;
+ }
+
+ if(reclaim_data->rechargeable_battery_type)
+ strcpy(buffer, "Battery Backed");
+ else
+ strcpy(buffer, "Supercap Protected");
+ }
+ body = add_line_to_body(body, _("Cache Protection"), buffer);
+ }
+
+ out:
return body;
}
diff --git a/iprlib.c b/iprlib.c
index a31a60d..b03c995 100644
--- a/iprlib.c
+++ b/iprlib.c
@@ -6384,6 +6384,10 @@ void check_current_config(bool allow_rebuild_refresh)
get_dual_ioa_state(ioa);
get_subsys_config(ioa);
+ if (ioa->has_vset_write_cache == 1 &&
+ get_ioa_caching(ioa) == IPR_IOA_VSET_CACHE_ENABLED)
+ ioa->vset_write_cache = 1;
+
/* Get Query Array Config Data */
rc = ipr_query_array_config(ioa, allow_rebuild_refresh, 0, 0,
0, qac_data);
@@ -7316,7 +7320,9 @@ int get_ioa_caching(struct ipr_ioa *ioa)
return IPR_IOA_CACHING_DISABLED_DUAL_ENABLED;
else
return IPR_IOA_CACHING_DEFAULT_DUAL_ENABLED;
- else
+ else if (term->vset_write_cache_enabled)
+ return IPR_IOA_VSET_CACHE_ENABLED;
+ else
if (term->disable_caching_requested ==
IPR_IOA_REQUESTED_CACHING_DISABLED)
return IPR_IOA_REQUESTED_CACHING_DISABLED;
else
diff --git a/iprlib.h b/iprlib.h
index 279c1df..736d9d6 100644
--- a/iprlib.h
+++ b/iprlib.h
@@ -216,6 +216,8 @@ typedef uint64_t u64;
#define IPR_IOA_CACHING_DEFAULT_DUAL_ENABLED 0x2
#define IPR_IOA_CACHING_DISABLED_DUAL_ENABLED 0x3
+#define IPR_IOA_VSET_CACHE_ENABLED 0x4
+
#define IPR_IOA_SET_CACHING_DEFAULT 0x0
#define IPR_IOA_SET_CACHING_DISABLED 0x10
#define IPR_IOA_SET_CACHING_DUAL_DISABLED 0x20
@@ -1481,6 +1483,7 @@ struct ipr_ioa {
u8 disable_rebuild_verify:1;
u8 configure_rebuild_verify:1;
u8 has_vset_write_cache:1;
+ u8 vset_write_cache:1;
#define IPR_SIS32 0x00
#define IPR_SIS64 0x01
@@ -2193,13 +2196,17 @@ struct ipr_global_cache_params_term {
#if defined (__BIG_ENDIAN_BITFIELD)
u8 enable_caching_dual_ioa_failure:1;
u8 disable_caching_requested:1;
- u8 reserved1:6;
+ u8 reserved1:2;
+ u8 vset_write_cache_enabled:1;
+ u8 reserved2:3;
#elif defined (__LITTLE_ENDIAN_BITFIELD)
- u8 reserved1:6;
+ u8 reserved2:3;
+ u8 vset_write_cache_enabled:1;
+ u8 reserved1:2;
u8 disable_caching_requested:1;
u8 enable_caching_dual_ioa_failure:1;
#endif
- u8 reserved2;
+ u8 reserved3;
};
struct ipr_query_ioa_caching_info {
--
2.1.0
------------------------------------------------------------------------------
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