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| author | Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com> | 2021-06-09 18:28:23 -0700 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2021-06-17 15:51:18 +0200 |
| commit | 73eefc270afa1f27d82c42fdb34562d07a834b40 (patch) | |
| tree | 4be349c260b92bfd242e3d3b9d5b25dfbd4cf56a /drivers/nvme/host/nvme.h | |
| parent | cb1b10e7ac6c1438247ee3c7e4a2f2332a77ba07 (diff) | |
| download | linux-73eefc270afa1f27d82c42fdb34562d07a834b40.tar.bz2 | |
nvme: add a helper to check ctrl sgl support
For various transports such as fc/tcp/pci it is common to check if
NVMe SGLs are supported or not by the controller.
In this preparation patch we add a helper to avoid the open coding of
such checks in the various transport.
Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'drivers/nvme/host/nvme.h')
| -rw-r--r-- | drivers/nvme/host/nvme.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h index 1f397ecba16c..75420ceacc10 100644 --- a/drivers/nvme/host/nvme.h +++ b/drivers/nvme/host/nvme.h @@ -869,6 +869,11 @@ static inline void nvme_hwmon_exit(struct nvme_ctrl *ctrl) } #endif +static inline bool nvme_ctrl_sgl_supported(struct nvme_ctrl *ctrl) +{ + return ctrl->sgls & ((1 << 0) | (1 << 1)); +} + u32 nvme_command_effects(struct nvme_ctrl *ctrl, struct nvme_ns *ns, u8 opcode); void nvme_execute_passthru_rq(struct request *rq); |