diff options
Diffstat (limited to 'drivers/net/wireless/intel/iwlwifi/pcie/tx-gen2.c')
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/pcie/tx-gen2.c | 20 |
1 files changed, 13 insertions, 7 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/tx-gen2.c b/drivers/net/wireless/intel/iwlwifi/pcie/tx-gen2.c index 38d110338987..9ef6b8fe03c1 100644 --- a/drivers/net/wireless/intel/iwlwifi/pcie/tx-gen2.c +++ b/drivers/net/wireless/intel/iwlwifi/pcie/tx-gen2.c @@ -99,10 +99,7 @@ void iwl_pcie_gen2_update_byte_tbl(struct iwl_trans_pcie *trans_pcie, u16 len = byte_cnt; __le16 bc_ent; - if (trans_pcie->bc_table_dword) - len = DIV_ROUND_UP(len, 4); - - if (WARN_ON(len > 0xFFF || idx >= txq->n_window)) + if (WARN(idx >= txq->n_window, "%d >= %d\n", idx, txq->n_window)) return; filled_tfd_size = offsetof(struct iwl_tfh_tfd, tbs) + @@ -117,11 +114,20 @@ void iwl_pcie_gen2_update_byte_tbl(struct iwl_trans_pcie *trans_pcie, */ num_fetch_chunks = DIV_ROUND_UP(filled_tfd_size, 64) - 1; - bc_ent = cpu_to_le16(len | (num_fetch_chunks << 12)); - if (trans->cfg->device_family >= IWL_DEVICE_FAMILY_22560) + if (trans->cfg->device_family >= IWL_DEVICE_FAMILY_22560) { + /* Starting from 22560, the HW expects bytes */ + WARN_ON(trans_pcie->bc_table_dword); + WARN_ON(len > 0x3FFF); + bc_ent = cpu_to_le16(len | (num_fetch_chunks << 14)); scd_bc_tbl_gen3->tfd_offset[idx] = bc_ent; - else + } else { + /* Until 22560, the HW expects DW */ + WARN_ON(!trans_pcie->bc_table_dword); + len = DIV_ROUND_UP(len, 4); + WARN_ON(len > 0xFFF); + bc_ent = cpu_to_le16(len | (num_fetch_chunks << 12)); scd_bc_tbl->tfd_offset[idx] = bc_ent; + } } /* |