diff options
Diffstat (limited to 'drivers/net/wireless/iwlwifi/pcie/trans.c')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/pcie/trans.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/drivers/net/wireless/iwlwifi/pcie/trans.c b/drivers/net/wireless/iwlwifi/pcie/trans.c index 80b05d82168..3a40607ed54 100644 --- a/drivers/net/wireless/iwlwifi/pcie/trans.c +++ b/drivers/net/wireless/iwlwifi/pcie/trans.c @@ -820,6 +820,45 @@ static void iwl_trans_pcie_release_nic_access(struct iwl_trans *trans) mmiowb(); } +static int iwl_trans_pcie_read_mem(struct iwl_trans *trans, u32 addr, + void *buf, int dwords) +{ + unsigned long flags; + int offs, ret = 0; + u32 *vals = buf; + + spin_lock_irqsave(&trans->reg_lock, flags); + if (likely(iwl_trans_grab_nic_access(trans, false))) { + iwl_write32(trans, HBUS_TARG_MEM_RADDR, addr); + for (offs = 0; offs < dwords; offs++) + vals[offs] = iwl_read32(trans, HBUS_TARG_MEM_RDAT); + iwl_trans_release_nic_access(trans); + } else { + ret = -EBUSY; + } + spin_unlock_irqrestore(&trans->reg_lock, flags); + return ret; +} + +static int iwl_trans_pcie_write_mem(struct iwl_trans *trans, u32 addr, + void *buf, int dwords) +{ + unsigned long flags; + int offs, ret = 0; + u32 *vals = buf; + + spin_lock_irqsave(&trans->reg_lock, flags); + if (likely(iwl_trans_grab_nic_access(trans, false))) { + iwl_write32(trans, HBUS_TARG_MEM_WADDR, addr); + for (offs = 0; offs < dwords; offs++) + iwl_write32(trans, HBUS_TARG_MEM_WDAT, vals[offs]); + iwl_trans_release_nic_access(trans); + } else { + ret = -EBUSY; + } + spin_unlock_irqrestore(&trans->reg_lock, flags); + return ret; +} #define IWL_FLUSH_WAIT_MS 2000 @@ -1298,6 +1337,8 @@ static const struct iwl_trans_ops trans_ops_pcie = { .read32 = iwl_trans_pcie_read32, .read_prph = iwl_trans_pcie_read_prph, .write_prph = iwl_trans_pcie_write_prph, + .read_mem = iwl_trans_pcie_read_mem, + .write_mem = iwl_trans_pcie_write_mem, .configure = iwl_trans_pcie_configure, .set_pmi = iwl_trans_pcie_set_pmi, .grab_nic_access = iwl_trans_pcie_grab_nic_access, |