diff options
| author | Alexander Usyskin <alexander.usyskin@intel.com> | 2021-02-06 15:43:22 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-02-06 15:48:11 +0100 |
| commit | b7a4804129c7adb3ee9caf5505e3f91fb1467ec3 (patch) | |
| tree | 99c7460cfdedf9fdbed0a4aa328ba6ba962f6b64 /drivers/misc/mei/hw.h | |
| parent | mei: allow clients on bus to communicate in remove callback (diff) | |
| download | linux-b7a4804129c7adb3ee9caf5505e3f91fb1467ec3.tar.xz linux-b7a4804129c7adb3ee9caf5505e3f91fb1467ec3.zip | |
mei: add support for client dma capability
Client DMA capability indicates whether the firmware supports setting up
a direct DMA channel between the host and me client.
The DMA capabilities are supported from firmware HBM version 2.2
and newer.
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Link: https://lore.kernel.org/r/20210206144325.25682-3-tomas.winkler@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/misc/mei/hw.h')
| -rw-r--r-- | drivers/misc/mei/hw.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/misc/mei/hw.h b/drivers/misc/mei/hw.h index df2fb9520dd8..9577a2cc0733 100644 --- a/drivers/misc/mei/hw.h +++ b/drivers/misc/mei/hw.h @@ -88,6 +88,12 @@ #define HBM_MINOR_VERSION_CAP 2 #define HBM_MAJOR_VERSION_CAP 2 +/* + * MEI version with client DMA support + */ +#define HBM_MINOR_VERSION_CD 2 +#define HBM_MAJOR_VERSION_CD 2 + /* Host bus message command opcode */ #define MEI_HBM_CMD_OP_MSK 0x7f /* Host bus message command RESPONSE */ @@ -648,6 +654,8 @@ struct hbm_dma_ring_ctrl { /* virtual tag supported */ #define HBM_CAP_VT BIT(0) +/* client dma supported */ +#define HBM_CAP_CD BIT(2) /** * struct hbm_capability_request - capability request from host to fw |