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| author | Dave Jiang <dave.jiang@intel.com> | 2020-01-21 16:44:05 -0700 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2020-01-24 11:18:45 +0530 |
| commit | c52ca478233c172b2d322b5241d6279a8661cbba (patch) | |
| tree | 7006d7e739952f598ff1a308239d2b794fc2cd22 /drivers/dma/idxd/registers.h | |
| parent | bfe1d56091c1a404b3d4ce7e9809d745fc4453bb (diff) | |
| download | linux-stable-c52ca478233c172b2d322b5241d6279a8661cbba.tar.gz linux-stable-c52ca478233c172b2d322b5241d6279a8661cbba.tar.bz2 linux-stable-c52ca478233c172b2d322b5241d6279a8661cbba.zip | |
dmaengine: idxd: add configuration component of driver
The device is left unconfigured when the driver is loaded. Various
components are configured via the driver sysfs attributes. Once
configuration is done, the device can be enabled by writing the device name
to the bind attribute of the device driver sysfs. Disabling can be done
similarly. Also the individual work queues can also be enabled and disabled
through the bind/unbind attributes. A constructed hierarchy is created
through the struct device framework in order to provide appropriate
configuration points and device state and status. This hierarchy is
presented off the virtual DSA bus.
i.e. /sys/bus/dsa/...
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/157965024585.73301.6431413676230150589.stgit@djiang5-desk3.ch.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma/idxd/registers.h')
| -rw-r--r-- | drivers/dma/idxd/registers.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/dma/idxd/registers.h b/drivers/dma/idxd/registers.h index 146e51f1d872..a39e7ae6b3d9 100644 --- a/drivers/dma/idxd/registers.h +++ b/drivers/dma/idxd/registers.h @@ -8,6 +8,7 @@ #define IDXD_MMIO_BAR 0 #define IDXD_WQ_BAR 2 +#define IDXD_PORTAL_SIZE 0x4000 /* MMIO Device BAR0 Registers */ #define IDXD_VER_OFFSET 0x00 @@ -223,7 +224,7 @@ enum idxd_cmdsts_err { }; #define IDXD_SWERR_OFFSET 0xc0 -#define IDXD_SWERR_VALID 0x00000001 +#define IDXD_SWERR_VALID 0x00000001 #define IDXD_SWERR_OVERFLOW 0x00000002 #define IDXD_SWERR_ACK (IDXD_SWERR_VALID | IDXD_SWERR_OVERFLOW) union sw_err_reg { |