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hw/cxl: Add support for device sanitation

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Make use of the background operations through the sanitize command, per CXL
3.0 specs. Traditionally run times can be rather long, depending on the
size of the media.

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: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Message-Id: <20231023160806.13206-14-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:
Davidlohr Bueso 2023-10-23 17:08:02 +01:00 • committed by Michael S. Tsirkin
parent 43efb0bfad
commit 25a52959f9
3 changed files with 167 additions and 0 deletions
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17
include/hw/cxl/cxl_device.h
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@ -343,6 +343,23 @@ REG64(CXL_MEM_DEV_STS, 0)
FIELD(CXL_MEM_DEV_STS, MBOX_READY, 4, 1)
FIELD(CXL_MEM_DEV_STS, RESET_NEEDED, 5, 3)
static inline void __toggle_media(CXLDeviceState *cxl_dstate, int val)
{
uint64_t dev_status_reg;
dev_status_reg = FIELD_DP64(0, CXL_MEM_DEV_STS, MEDIA_STATUS, val);
cxl_dstate->mbox_reg_state64[R_CXL_MEM_DEV_STS] = dev_status_reg;
}
#define cxl_dev_disable_media(cxlds) \
do { __toggle_media((cxlds), 0x3); } while (0)
#define cxl_dev_enable_media(cxlds) \
do { __toggle_media((cxlds), 0x1); } while (0)
static inline bool sanitize_running(CXLCCI *cci)
{
return !!cci->bg.runtime && cci->bg.opcode == 0x4400;
}
typedef struct CXLError {
QTAILQ_ENTRY(CXLError) node;
int type; /* Error code as per FE definition */