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hw/cxl: factor out calculation of sanitize duration from cmd_santize_overwrite

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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 <dave@stgolabs.net>
Signed-off-by: Vinayak Holikatti <vinayak.kh@samsung.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Message-Id: <20250305092501.191929-5-Jonathan.Cameron@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Vinayak Holikatti 2025-03-05 09:24:55 +00:00 • committed by Michael S. Tsirkin
parent 77a8e9fe0e
commit 484df0704e
1 changed files with 36 additions and 27 deletions
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63
hw/cxl/cxl-mailbox-utils.c
View file

@ -1640,6 +1640,41 @@ static void __do_sanitization(CXLType3Dev *ct3d)
cxl_discard_all_event_records(&ct3d->cxl_dstate);
}
static int get_sanitize_duration(uint64_t total_mem)
{
int secs = 0;
if (total_mem <= 512) {
secs = 4;
} else if (total_mem <= 1024) {
secs = 8;
} else if (total_mem <= 2 * 1024) {
secs = 15;
} else if (total_mem <= 4 * 1024) {
secs = 30;
} else if (total_mem <= 8 * 1024) {
secs = 60;
} else if (total_mem <= 16 * 1024) {
secs = 2 * 60;
} else if (total_mem <= 32 * 1024) {
secs = 4 * 60;
} else if (total_mem <= 64 * 1024) {
secs = 8 * 60;
} else if (total_mem <= 128 * 1024) {
secs = 15 * 60;
} else if (total_mem <= 256 * 1024) {
secs = 30 * 60;
} else if (total_mem <= 512 * 1024) {
secs = 60 * 60;
} else if (total_mem <= 1024 * 1024) {
secs = 120 * 60;
} else {
secs = 240 * 60; /* max 4 hrs */
}
return secs;
}
/*
* CXL r3.1 Section 8.2.9.9.5.1: Sanitize (Opcode 4400h)
*
@ -1668,33 +1703,7 @@ static CXLRetCode cmd_sanitize_overwrite(const struct cxl_cmd *cmd,
int secs;
total_mem = (ct3d->cxl_dstate.vmem_size + ct3d->cxl_dstate.pmem_size) >> 20;
if (total_mem <= 512) {
secs = 4;
} else if (total_mem <= 1024) {
secs = 8;
} else if (total_mem <= 2 * 1024) {
secs = 15;
} else if (total_mem <= 4 * 1024) {
secs = 30;
} else if (total_mem <= 8 * 1024) {
secs = 60;
} else if (total_mem <= 16 * 1024) {
secs = 2 * 60;
} else if (total_mem <= 32 * 1024) {
secs = 4 * 60;
} else if (total_mem <= 64 * 1024) {
secs = 8 * 60;
} else if (total_mem <= 128 * 1024) {
secs = 15 * 60;
} else if (total_mem <= 256 * 1024) {
secs = 30 * 60;
} else if (total_mem <= 512 * 1024) {
secs = 60 * 60;
} else if (total_mem <= 1024 * 1024) {
secs = 120 * 60;
} else {
secs = 240 * 60; /* max 4 hrs */
}
secs = get_sanitize_duration(total_mem);
/* EBUSY other bg cmds as of now */
cci->bg.runtime = secs * 1000UL;