iwlwifi: pcie: change CSR reset in family 8000

This register is not present in 8000 family devices.
There is prph register instead.

Signed-off-by: Eran Harary <eran.harary@intel.com>
Reviewed-by: Dor Shaish <dor.shaish@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>

diff --git a/drivers/net/wireless/iwlwifi/iwl-prph.h b/drivers/net/wireless/iwlwifi/iwl-prph.h
index 100bd0d..fc3b6be 100644 (file)
--- a/drivers/net/wireless/iwlwifi/iwl-prph.h
+++ b/drivers/net/wireless/iwlwifi/iwl-prph.h
@@ -105,6 +105,13 @@
 /* Device NMI register */
 #define DEVICE_SET_NMI_REG 0x00a01c30
 
+/*
+ * Device reset for family 8000
+ * write to bit 24 in order to reset the CPU
+*/
+#define RELEASE_CPU_RESET              (0x300C)
+#define RELEASE_CPU_RESET_BIT          BIT(24)
+
 /*****************************************************************************
  *                        7000/3000 series SHR DTS addresses                 *
  *****************************************************************************/

diff --git a/drivers/net/wireless/iwlwifi/pcie/trans.c b/drivers/net/wireless/iwlwifi/pcie/trans.c
index f7e85d3..53a3457 100644 (file)
--- a/drivers/net/wireless/iwlwifi/pcie/trans.c
+++ b/drivers/net/wireless/iwlwifi/pcie/trans.c
@@ -573,6 +573,12 @@ static int iwl_pcie_load_given_ucode(struct iwl_trans *trans,
                }
        }
 
+       /* release CPU reset */
+       if (trans->cfg->device_family == IWL_DEVICE_FAMILY_8000)
+               iwl_write_prph(trans, RELEASE_CPU_RESET, RELEASE_CPU_RESET_BIT);
+       else
+               iwl_write32(trans, CSR_RESET, 0);
+
        return 0;
 }