diff options
| author | Dave Jiang <dave.jiang@intel.com> | 2023-04-07 23:31:29 +0300 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2023-04-12 20:48:44 +0300 |
| commit | 1649091f9180470f96f001724a4902d5d82bbd75 (patch) | |
| tree | 9f65451b2c4b4d28b7b25a111b10c74b9e81cf5d /drivers/dma/idxd/registers.h | |
| parent | 0c40bfb4c2dfad00a15337bb6213f92a797e3695 (diff) | |
| download | linux-1649091f9180470f96f001724a4902d5d82bbd75.tar.xz | |
dmaengine: idxd: add event log size sysfs attribute
Add support for changing of the event log size. Event log is a
feature added to DSA 2.0 hardware to improve error reporting.
It supersedes the SWERROR register on DSA 1.0 hardware and hope
to prevent loss of reported errors.
The error log size determines how many error entries supported for
the device. It can be configured by the user via sysfs attribute.
Tested-by: Tony Zhu <tony.zhu@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Co-developed-by: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Link: https://lore.kernel.org/r/20230407203143.2189681-3-fenghua.yu@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 | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/dma/idxd/registers.h b/drivers/dma/idxd/registers.h index 338289a66f00..ea3a499a3c3c 100644 --- a/drivers/dma/idxd/registers.h +++ b/drivers/dma/idxd/registers.h @@ -31,7 +31,9 @@ union gen_cap_reg { u64 rsvd:3; u64 dest_readback:1; u64 drain_readback:1; - u64 rsvd2:6; + u64 rsvd2:3; + u64 evl_support:2; + u64 rsvd4:1; u64 max_xfer_shift:5; u64 max_batch_shift:4; u64 max_ims_mult:6; @@ -297,6 +299,9 @@ union iaa_cap_reg { #define IDXD_IAACAP_OFFSET 0x180 +#define IDXD_EVL_SIZE_MIN 0x0040 +#define IDXD_EVL_SIZE_MAX 0xffff + union msix_perm { struct { u32 rsvd:2; |