iwlwifi: move prph handling into the transport

New transports may handle it internally for better performance.
Also move the tracing inside PRPH access which will make the
output more readable:

iwlwifi_dev_ioread_prph32: Read 0x0 from SCD_AGGR_SEL (32-bit)

instead of the corresponding accesses to HBUS_TARG_PRPH_*.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

1 files changed, 16 insertions, 0 deletions

diff --git a/drivers/net/wireless/iwlwifi/pcie/trans.c b/drivers/net/wireless/iwlwifi/pcie/trans.c
index 9f317b016df8..09d2ed1e8020 100644
--- a/drivers/net/wireless/iwlwifi/pcie/trans.c
+++ b/drivers/net/wireless/iwlwifi/pcie/trans.c
@@ -668,6 +668,20 @@ static u32 iwl_trans_pcie_read32(struct iwl_trans *trans, u32 ofs)
         return readl(IWL_TRANS_GET_PCIE_TRANS(trans)->hw_base + ofs);
 }
 
+static u32 iwl_trans_pcie_read_prph(struct iwl_trans *trans, u32 reg)
+{
+        iwl_trans_pcie_write32(trans, HBUS_TARG_PRPH_RADDR, reg | (3 << 24));
+        return iwl_trans_pcie_read32(trans, HBUS_TARG_PRPH_RDAT);
+}
+
+static void iwl_trans_pcie_write_prph(struct iwl_trans *trans, u32 addr,
+                                      u32 val)
+{
+        iwl_trans_pcie_write32(trans, HBUS_TARG_PRPH_WADDR,
+                               ((addr & 0x0000FFFF) | (3 << 24)));
+        iwl_trans_pcie_write32(trans, HBUS_TARG_PRPH_WDAT, val);
+}
+
 static void iwl_trans_pcie_configure(struct iwl_trans *trans,
                                      const struct iwl_trans_config *trans_cfg)
 {
@@ -1223,6 +1237,8 @@ static const struct iwl_trans_ops trans_ops_pcie = {
         .write8 = iwl_trans_pcie_write8,
         .write32 = iwl_trans_pcie_write32,
         .read32 = iwl_trans_pcie_read32,
+        .read_prph = iwl_trans_pcie_read_prph,
+        .write_prph = iwl_trans_pcie_write_prph,
         .configure = iwl_trans_pcie_configure,
         .set_pmi = iwl_trans_pcie_set_pmi,
 };