diff options
author | Klaus Jensen <k.jensen@samsung.com> | 2021-02-04 09:55:48 +0100 |
---|---|---|
committer | Klaus Jensen <k.jensen@samsung.com> | 2021-03-18 12:34:51 +0100 |
commit | 146f720c55637410062041f68dc908645cd18aaa (patch) | |
tree | cee4032d0543f13643b2cec0dd47687902c0fb60 /hw/block/nvme.h | |
parent | bc3a65e99254cfe001bd16a569a5aa7d20f930e8 (diff) |
hw/block/nvme: end-to-end data protection
Add support for namespaces formatted with protection information. The
type of end-to-end data protection (i.e. Type 1, Type 2 or Type 3) is
selected with the `pi` nvme-ns device parameter. If the number of
metadata bytes is larger than 8, the `pil` nvme-ns device parameter may
be used to control the location of the 8-byte DIF tuple. The default
`pil` value of '0', causes the DIF tuple to be transferred as the last
8 bytes of the metadata. Set to 1 to store this in the first eight bytes
instead.
Co-authored-by: Gollu Appalanaidu <anaidu.gollu@samsung.com>
Signed-off-by: Gollu Appalanaidu <anaidu.gollu@samsung.com>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Diffstat (limited to 'hw/block/nvme.h')
-rw-r--r-- | hw/block/nvme.h | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/hw/block/nvme.h b/hw/block/nvme.h index 5ba2efaedf..115d017765 100644 --- a/hw/block/nvme.h +++ b/hw/block/nvme.h @@ -2,6 +2,7 @@ #define HW_NVME_H #include "block/nvme.h" +#include "hw/pci/pci.h" #include "nvme-subsys.h" #include "nvme-ns.h" @@ -62,6 +63,15 @@ typedef struct NvmeRequest { QTAILQ_ENTRY(NvmeRequest)entry; } NvmeRequest; +typedef struct NvmeBounceContext { + NvmeRequest *req; + + struct { + QEMUIOVector iov; + uint8_t *bounce; + } data, mdata; +} NvmeBounceContext; + static inline const char *nvme_adm_opc_str(uint8_t opc) { switch (opc) { @@ -264,6 +274,27 @@ static inline NvmeCtrl *nvme_ctrl(NvmeRequest *req) return sq->ctrl; } +static inline uint16_t nvme_cid(NvmeRequest *req) +{ + if (!req) { + return 0xffff; + } + + return le16_to_cpu(req->cqe.cid); +} + +typedef enum NvmeTxDirection { + NVME_TX_DIRECTION_TO_DEVICE = 0, + NVME_TX_DIRECTION_FROM_DEVICE = 1, +} NvmeTxDirection; + int nvme_register_namespace(NvmeCtrl *n, NvmeNamespace *ns, Error **errp); +uint16_t nvme_bounce_data(NvmeCtrl *n, uint8_t *ptr, uint32_t len, + NvmeTxDirection dir, NvmeRequest *req); +uint16_t nvme_bounce_mdata(NvmeCtrl *n, uint8_t *ptr, uint32_t len, + NvmeTxDirection dir, NvmeRequest *req); +void nvme_rw_complete_cb(void *opaque, int ret); +uint16_t nvme_map_dptr(NvmeCtrl *n, NvmeSg *sg, size_t len, + NvmeCmd *cmd); #endif /* HW_NVME_H */ |