Perform an Inquiry to page 0xC4 when loading IOA Capabilities to check
if adapter supports Sync Write Cache.
Signed-off-by: Gabriel Krisman Bertazi <kris...@linux.vnet.ibm.com>
---
iprlib.c | 8 ++++++++
iprlib.h | 4 ++++
2 files changed, 12 insertions(+)
diff --git a/iprlib.c b/iprlib.c
index 94bcdca..a31a60d 100644
--- a/iprlib.c
+++ b/iprlib.c
@@ -5976,6 +5976,7 @@ static void get_ioa_cap(struct ipr_ioa *ioa)
struct ipr_inquiry_ioa_cap ioa_cap;
struct ipr_mode_page24 *page24;
struct ipr_mode_pages mode_pages;
+ struct ipr_cache_cap_vpd cc_vpd;
ioa->af_block_size = IPR_DEFAULT_AF_BLOCK_SIZE;
ioa->tcq_mode = ioa_get_tcq_mode(ioa);
@@ -5994,6 +5995,13 @@ static void get_ioa_cap(struct ipr_ioa *ioa)
}
if (page0_inq.supported_page_codes[j] == 0xC4) {
ioa->has_cache = 1;
+
+ memset(&cc_vpd, 0, sizeof(cc_vpd));
+ ipr_inquiry(&ioa->ioa, 0xC4, &cc_vpd, sizeof(cc_vpd));
+
+ if (htonl(cc_vpd.cache_cap) &
+ IPR_CACHE_CAP_VSET_WRITE_CACHE)
+ ioa->has_vset_write_cache = 1;
continue;
}
if (page0_inq.supported_page_codes[j] != 0xD0)
diff --git a/iprlib.h b/iprlib.h
index 9c09cba..fa01186 100644
--- a/iprlib.h
+++ b/iprlib.h
@@ -1499,6 +1499,9 @@ struct ipr_ioa {
char host_name[16];
char physical_location[1024];
u8 yl_serial_num[YL_SERIAL_NUM_LEN];
+
+ u8 has_vset_write_cache:1;
+
struct ipr_dev dev[IPR_MAX_IOA_DEVICES];
struct ipr_multi_ioa_status ioa_status;
struct ipr_array_query_data *qac_data;
@@ -1992,6 +1995,7 @@ struct ipr_dram_vpd {
};
struct ipr_cache_cap_vpd {
+#define IPR_CACHE_CAP_VSET_WRITE_CACHE 0x08000000
u8 peri_dev_type;
u8 page_code;
u8 reserved1;
--
2.1.0
------------------------------------------------------------------------------
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