diff options
Diffstat (limited to 'drivers/infiniband/hw/mthca/mthca_cmd.c')
| -rw-r--r-- | drivers/infiniband/hw/mthca/mthca_cmd.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/mthca/mthca_cmd.c b/drivers/infiniband/hw/mthca/mthca_cmd.c index 1e60487ecd7..e15c1e2deab 100644 --- a/drivers/infiniband/hw/mthca/mthca_cmd.c +++ b/drivers/infiniband/hw/mthca/mthca_cmd.c @@ -1085,6 +1085,34 @@ out: return err; } +static void get_board_id(void *vsd, char *board_id) +{ + int i; + +#define VSD_OFFSET_SIG1 0x00 +#define VSD_OFFSET_SIG2 0xde +#define VSD_OFFSET_MLX_BOARD_ID 0xd0 +#define VSD_OFFSET_TS_BOARD_ID 0x20 + +#define VSD_SIGNATURE_TOPSPIN 0x5ad + + memset(board_id, 0, MTHCA_BOARD_ID_LEN); + + if (be16_to_cpup(vsd + VSD_OFFSET_SIG1) == VSD_SIGNATURE_TOPSPIN && + be16_to_cpup(vsd + VSD_OFFSET_SIG2) == VSD_SIGNATURE_TOPSPIN) { + strlcpy(board_id, vsd + VSD_OFFSET_TS_BOARD_ID, MTHCA_BOARD_ID_LEN); + } else { + /* + * The board ID is a string but the firmware byte + * swaps each 4-byte word before passing it back to + * us. Therefore we need to swab it before printing. + */ + for (i = 0; i < 4; ++i) + ((u32 *) board_id)[i] = + swab32(*(u32 *) (vsd + VSD_OFFSET_MLX_BOARD_ID + i * 4)); + } +} + int mthca_QUERY_ADAPTER(struct mthca_dev *dev, struct mthca_adapter *adapter, u8 *status) { @@ -1097,6 +1125,7 @@ int mthca_QUERY_ADAPTER(struct mthca_dev *dev, #define QUERY_ADAPTER_DEVICE_ID_OFFSET 0x04 #define QUERY_ADAPTER_REVISION_ID_OFFSET 0x08 #define QUERY_ADAPTER_INTA_PIN_OFFSET 0x10 +#define QUERY_ADAPTER_VSD_OFFSET 0x20 mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL); if (IS_ERR(mailbox)) @@ -1114,6 +1143,9 @@ int mthca_QUERY_ADAPTER(struct mthca_dev *dev, MTHCA_GET(adapter->revision_id, outbox, QUERY_ADAPTER_REVISION_ID_OFFSET); MTHCA_GET(adapter->inta_pin, outbox, QUERY_ADAPTER_INTA_PIN_OFFSET); + get_board_id(outbox + QUERY_ADAPTER_VSD_OFFSET / 4, + adapter->board_id); + out: mthca_free_mailbox(dev, mailbox); return err; |