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hw/nvme: add support for zoned random write area

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Add support for TP 4076 ("Zoned Random Write Area"), v2021.08.23
("Ratified").

This adds three new namespace parameters: "zoned.numzrwa" (number of
zrwa resources, i.e. number of zones that can have a zrwa),
"zoned.zrwas" (zrwa size in LBAs), "zoned.zrwafg" (granularity in LBAs
for flushes).

Reviewed-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
This commit is contained in:
Klaus Jensen
2022-02-14 08:58:29 +01:00
parent 25872031e1
commit e321b4cdc2
5 changed files with 237 additions and 20 deletions
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include/block/nvme.h
+16 -1
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@@ -890,6 +890,8 @@ enum NvmeStatusCodes {
NVME_INVALID_PROT_INFO = 0x0181,
NVME_WRITE_TO_RO = 0x0182,
NVME_CMD_SIZE_LIMIT = 0x0183,
NVME_INVALID_ZONE_OP = 0x01b6,
NVME_NOZRWA = 0x01b7,
NVME_ZONE_BOUNDARY_ERROR = 0x01b8,
NVME_ZONE_FULL = 0x01b9,
NVME_ZONE_READ_ONLY = 0x01ba,
@@ -1345,7 +1347,12 @@ typedef struct QEMU_PACKED NvmeIdNsZoned {
uint32_t mor;
uint32_t rrl;
uint32_t frl;
uint8_t rsvd20[2796];
uint8_t rsvd12[24];
uint32_t numzrwa;
uint16_t zrwafg;
uint16_t zrwas;
uint8_t zrwacap;
uint8_t rsvd53[2763];
NvmeLBAFE lbafe[16];
uint8_t rsvd3072[768];
uint8_t vs[256];
@@ -1353,6 +1360,11 @@ typedef struct QEMU_PACKED NvmeIdNsZoned {
enum NvmeIdNsZonedOzcs {
NVME_ID_NS_ZONED_OZCS_RAZB = 1 << 0,
NVME_ID_NS_ZONED_OZCS_ZRWASUP = 1 << 1,
};
enum NvmeIdNsZonedZrwacap {
NVME_ID_NS_ZONED_ZRWACAP_EXPFLUSHSUP = 1 << 0,
};
/*Deallocate Logical Block Features*/
@@ -1408,6 +1420,7 @@ enum NvmeZoneAttr {
NVME_ZA_FINISHED_BY_CTLR = 1 << 0,
NVME_ZA_FINISH_RECOMMENDED = 1 << 1,
NVME_ZA_RESET_RECOMMENDED = 1 << 2,
NVME_ZA_ZRWA_VALID = 1 << 3,
NVME_ZA_ZD_EXT_VALID = 1 << 7,
};
@@ -1460,10 +1473,12 @@ enum NvmeZoneSendAction {
NVME_ZONE_ACTION_RESET = 0x04,
NVME_ZONE_ACTION_OFFLINE = 0x05,
NVME_ZONE_ACTION_SET_ZD_EXT = 0x10,
NVME_ZONE_ACTION_ZRWA_FLUSH = 0x11,
};
enum {
NVME_ZSFLAG_SELECT_ALL = 1 << 0,
NVME_ZSFLAG_ZRWA_ALLOC = 1 << 1,
};
typedef struct QEMU_PACKED NvmeZoneDescr {