diff options
| author | Easwar Hariharan <easwar.hariharan@intel.com> | 2016-02-03 22:31:14 (GMT) |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2016-03-11 01:37:46 (GMT) |
| commit | 8ebd4cf1852afb56773ce8818da22157bfffa900 (patch) | |
| tree | 6ef0471f736eddf7da4f791942e76a44549d976e /drivers/staging/rdma/hfi1/chip.h | |
| parent | c7cb7635d91d9126431159ee7f90b7137c908e89 (diff) | |
| download | linux-8ebd4cf1852afb56773ce8818da22157bfffa900.tar.xz | |
staging/rdma/hfi1: Add active and optical cable support
This patch qualifies and tunes active and optical cables for optimal
bit error rate and signal integrity settings. These settings are
fetched from the platform configuration data.
Based on attributes of the QSFP cable as read from the SFF-8636
compliant memory map, we select the appropriate settings from the
platform configuration data (examples: TX/RX equalization, enabling
cable high power, enabling TX/RX clock data recovery mechanisms, and RX
amplitude control) and apply them to the SERDES and QSFP cable.
The platform configuration data also contains system parameters such
as maximum power dissipation supported, and the cables are qualified
based on these parameters. As part of qualifying the cables, the
correct OfflineDisabledReasons are set for the appropriate scenarios.
Reviewed-by: Dean Luick <dean.luick@intel.com>
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Reviewed-by: Brent R Rothermel <brent.r.rothermel@intel.com>
Signed-off-by: Easwar Hariharan <easwar.hariharan@intel.com>
Signed-off-by: Jubin John <jubin.john@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/staging/rdma/hfi1/chip.h')
| -rw-r--r-- | drivers/staging/rdma/hfi1/chip.h | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/staging/rdma/hfi1/chip.h b/drivers/staging/rdma/hfi1/chip.h index 78ba425..5e4fe43 100644 --- a/drivers/staging/rdma/hfi1/chip.h +++ b/drivers/staging/rdma/hfi1/chip.h @@ -371,6 +371,9 @@ #define NUM_LANE_FIELDS 0x8 /* 8051 general register Field IDs */ +#define LINK_OPTIMIZATION_SETTINGS 0x00 +#define LINK_TUNING_PARAMETERS 0x02 +#define DC_HOST_COMM_SETTINGS 0x03 #define TX_SETTINGS 0x06 #define VERIFY_CAP_LOCAL_PHY 0x07 #define VERIFY_CAP_LOCAL_FABRIC 0x08 @@ -647,10 +650,13 @@ void handle_link_down(struct work_struct *work); void handle_link_downgrade(struct work_struct *work); void handle_link_bounce(struct work_struct *work); void handle_sma_message(struct work_struct *work); +void reset_qsfp(struct hfi1_pportdata *ppd); +void qsfp_event(struct work_struct *work); void start_freeze_handling(struct hfi1_pportdata *ppd, int flags); int send_idle_sma(struct hfi1_devdata *dd, u64 message); +int load_8051_config(struct hfi1_devdata *, u8, u8, u32); +int read_8051_config(struct hfi1_devdata *, u8, u8, u32 *); int start_link(struct hfi1_pportdata *ppd); -void init_qsfp(struct hfi1_pportdata *ppd); int bringup_serdes(struct hfi1_pportdata *ppd); void set_intr_state(struct hfi1_devdata *dd, u32 enable); void apply_link_downgrade_policy(struct hfi1_pportdata *ppd, |