iwlwifi: allow dynamic configuration of internal memory

New transport need to configure internal memory based on
the data in the (enlarged) alive notification from the
firmware. Add a transport API for this.

Signed-off-by: Eran Harary <eran.harary@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>

4 files changed, 30 insertions, 0 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-fw.h b/drivers/net/wireless/iwlwifi/iwl-fw.h
index 6fea27c0dd8e..d5ed1500afd5 100644
--- a/drivers/net/wireless/iwlwifi/iwl-fw.h
+++ b/drivers/net/wireless/iwlwifi/iwl-fw.h
@@ -196,6 +196,11 @@ struct fw_img {
         bool is_dual_cpus;
 };
 
+struct iwl_sf_region {
+        u32 addr;
+        u32 size;
+};
+
 /* uCode version contains 4 values: Major/Minor/API/Serial */
 #define IWL_UCODE_MAJOR(ver)    (((ver) & 0xFF000000) >> 24)
 #define IWL_UCODE_MINOR(ver)    (((ver) & 0x00FF0000) >> 16)
diff --git a/drivers/net/wireless/iwlwifi/iwl-trans.h b/drivers/net/wireless/iwlwifi/iwl-trans.h
index c57d3666e05c..34d49e171fb4 100644
--- a/drivers/net/wireless/iwlwifi/iwl-trans.h
+++ b/drivers/net/wireless/iwlwifi/iwl-trans.h
@@ -473,6 +473,8 @@ struct iwl_trans_ops {
         void (*op_mode_leave)(struct iwl_trans *iwl_trans);
         int (*start_fw)(struct iwl_trans *trans, const struct fw_img *fw,
                         bool run_in_rfkill);
+        int (*update_sf)(struct iwl_trans *trans,
+                         struct iwl_sf_region *st_fwrd_space);
         void (*fw_alive)(struct iwl_trans *trans, u32 scd_addr);
         void (*stop_device)(struct iwl_trans *trans);
 
@@ -636,6 +638,17 @@ static inline int iwl_trans_start_fw(struct iwl_trans *trans,
         return trans->ops->start_fw(trans, fw, run_in_rfkill);
 }
 
+static inline int iwl_trans_update_sf(struct iwl_trans *trans,
+                                      struct iwl_sf_region *st_fwrd_space)
+{
+        might_sleep();
+
+        if (trans->ops->update_sf)
+                return trans->ops->update_sf(trans, st_fwrd_space);
+
+        return 0;
+}
+
 static inline void iwl_trans_stop_device(struct iwl_trans *trans)
 {
         might_sleep();
diff --git a/drivers/net/wireless/iwlwifi/mvm/fw.c b/drivers/net/wireless/iwlwifi/mvm/fw.c
index 2cb72656f587..883e702152d5 100644
--- a/drivers/net/wireless/iwlwifi/mvm/fw.c
+++ b/drivers/net/wireless/iwlwifi/mvm/fw.c
@@ -137,6 +137,8 @@ static bool iwl_alive_fn(struct iwl_notif_wait_data *notif_wait,
                 alive_data->scd_base_addr = le32_to_cpu(palive2->scd_base_ptr);
                 mvm->umac_error_event_table =
                         le32_to_cpu(palive2->error_info_addr);
+                mvm->sf_space.addr = le32_to_cpu(palive2->st_fwrd_addr);
+                mvm->sf_space.size = le32_to_cpu(palive2->st_fwrd_size);
 
                 alive_data->valid = le16_to_cpu(palive2->status) ==
                                     IWL_ALIVE_STATUS_OK;
@@ -180,6 +182,7 @@ static int iwl_mvm_load_ucode_wait_alive(struct iwl_mvm *mvm,
         int ret, i;
         enum iwl_ucode_type old_type = mvm->cur_ucode;
         static const u8 alive_cmd[] = { MVM_ALIVE };
+        struct iwl_sf_region st_fwrd_space;
 
         fw = iwl_get_ucode_image(mvm, ucode_type);
         if (WARN_ON(!fw))
@@ -215,6 +218,14 @@ static int iwl_mvm_load_ucode_wait_alive(struct iwl_mvm *mvm,
                 return -EIO;
         }
 
+        /*
+         * update the sdio allocation according to the pointer we get in the
+         * alive notification.
+         */
+        st_fwrd_space.addr = mvm->sf_space.addr;
+        st_fwrd_space.size = mvm->sf_space.size;
+        ret = iwl_trans_update_sf(mvm->trans, &st_fwrd_space);
+
         iwl_trans_fw_alive(mvm->trans, alive_data.scd_base_addr);
 
         /*
diff --git a/drivers/net/wireless/iwlwifi/mvm/mvm.h b/drivers/net/wireless/iwlwifi/mvm/mvm.h
index a7d27fb37044..5d2effb4832a 100644
--- a/drivers/net/wireless/iwlwifi/mvm/mvm.h
+++ b/drivers/net/wireless/iwlwifi/mvm/mvm.h
@@ -490,6 +490,7 @@ struct iwl_mvm {
         u32 log_event_table;
         u32 umac_error_event_table;
         bool support_umac_log;
+        struct iwl_sf_region sf_space;
 
         u32 ampdu_ref;