Move the code of calculation of sanitize duration into function
for usability by other sanitize routines
Estimate times based on:
https://pmem.io/documents/NVDIMM_DSM_Interface-V1.8.pdf
Signed-off-by: Davidlohr Bueso <d...@stgolabs.net>
Signed-off-by: Vinayak Holikatti <vinayak...@samsung.com>
---
hw/cxl/cxl-mailbox-utils.c | 61 ++++++++++++++++++++++----------------
1 file changed, 35 insertions(+), 26 deletions(-)
diff --git a/hw/cxl/cxl-mailbox-utils.c b/hw/cxl/cxl-mailbox-utils.c
index f55a2fe614..2428d85fef 100644
--- a/hw/cxl/cxl-mailbox-utils.c
+++ b/hw/cxl/cxl-mailbox-utils.c
@@ -1656,34 +1656,10 @@ static void __do_sanitization(CXLType3Dev *ct3d)
cxl_discard_all_event_records(&ct3d->cxl_dstate);
}
-/*
- * CXL r3.1 Section 8.2.9.9.5.1: Sanitize (Opcode 4400h)
- *
- * Once the Sanitize command has started successfully, the device shall be
- * placed in the media disabled state. If the command fails or is interrupted
- * by a reset or power failure, it shall remain in the media disabled state
- * until a successful Sanitize command has been completed. During this state:
- *
- * 1. Memory writes to the device will have no effect, and all memory reads
- * will return random values (no user data returned, even for locations that
- * the failed Sanitize operation didn’t sanitize yet).
- *
- * 2. Mailbox commands shall still be processed in the disabled state, except
- * that commands that access Sanitized areas shall fail with the Media Disabled
- * error code.
- */
-static CXLRetCode cmd_sanitize_overwrite(const struct cxl_cmd *cmd,
- uint8_t *payload_in,
- size_t len_in,
- uint8_t *payload_out,
- size_t *len_out,
- CXLCCI *cci)
+static int get_sanitize_duration(uint64_t total_mem)
{
- CXLType3Dev *ct3d = CXL_TYPE3(cci->d);
- uint64_t total_mem; /* in Mb */
- int secs;
+ int secs = 0;
- total_mem = (ct3d->cxl_dstate.vmem_size + ct3d->cxl_dstate.pmem_size) >>
20;
if (total_mem <= 512) {
secs = 4;
} else if (total_mem <= 1024) {
@@ -1712,6 +1688,39 @@ static CXLRetCode cmd_sanitize_overwrite(const struct
cxl_cmd *cmd,
secs = 240 * 60; /* max 4 hrs */
}
+ return secs;
+}
+
+/*
+ * CXL r3.1 Section 8.2.9.9.5.1: Sanitize (Opcode 4400h)
+ *
+ * Once the Sanitize command has started successfully, the device shall be
+ * placed in the media disabled state. If the command fails or is interrupted
+ * by a reset or power failure, it shall remain in the media disabled state
+ * until a successful Sanitize command has been completed. During this state:
+ *
+ * 1. Memory writes to the device will have no effect, and all memory reads
+ * will return random values (no user data returned, even for locations that
+ * the failed Sanitize operation didn’t sanitize yet).
+ *
+ * 2. Mailbox commands shall still be processed in the disabled state, except
+ * that commands that access Sanitized areas shall fail with the Media Disabled
+ * error code.
+ */
+static CXLRetCode cmd_sanitize_overwrite(const struct cxl_cmd *cmd,
+ uint8_t *payload_in,
+ size_t len_in,
+ uint8_t *payload_out,
+ size_t *len_out,
+ CXLCCI *cci)
+{
+ CXLType3Dev *ct3d = CXL_TYPE3(cci->d);
+ uint64_t total_mem; /* in Mb */
+ int secs;
+
+ total_mem = (ct3d->cxl_dstate.vmem_size + ct3d->cxl_dstate.pmem_size) >>
20;
+ secs = get_sanitize_duration(total_mem);
+
/* EBUSY other bg cmds as of now */
cci->bg.runtime = secs * 1000UL;
*len_out = 0;
--
2.34.1
