iwlwifi: mvm: add support for IMR based on platform

Driver needs to enable IMR which is needed for debug on
certain platforms, so add a device config flag to set it.
Signed-off-by: Mukesh Sisodiya <mukesh.sisodiya@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20220304131517.0b96b2760503.I08bc741c8c497a2edbe4784cdab6abd8d04c62f3@changeidSigned-off-by: Luca Coelho <luciano.coelho@intel.com>

drivers/net/wireless/intel/iwlwifi/cfg/22000.c

@@ -391,6 +391,21 @@ const struct iwl_cfg_trans_params iwl_so_long_latency_trans_cfg = {
 	.ltr_delay = IWL_CFG_TRANS_LTR_DELAY_2500US,
 };
 
+const struct iwl_cfg_trans_params iwl_so_long_latency_imr_trans_cfg = {
+	.mq_rx_supported = true,
+	.use_tfh = true,
+	.rf_id = true,
+	.gen2 = true,
+	.device_family = IWL_DEVICE_FAMILY_AX210,
+	.base_params = &iwl_ax210_base_params,
+	.umac_prph_offset = 0x300000,
+	.integrated = true,
+	.low_latency_xtal = true,
+	.xtal_latency = 12000,
+	.ltr_delay = IWL_CFG_TRANS_LTR_DELAY_2500US,
+	.imr_enabled = true,
+};
+
 /*
  * If the device doesn't support HE, no need to have that many buffers.
  * 22000 devices can split multiple frames into a single RB, so fewer are

drivers/net/wireless/intel/iwlwifi/iwl-config.h

@@ -260,6 +260,7 @@ enum iwl_cfg_trans_ltr_delay {
  * @integrated: discrete or integrated
  * @low_latency_xtal: use the low latency xtal if supported
  * @ltr_delay: LTR delay parameter, &enum iwl_cfg_trans_ltr_delay.
+ * @imr_enabled: use the IMR if supported.
  */
 struct iwl_cfg_trans_params {
 	const struct iwl_base_params *base_params;
@@ -274,7 +275,8 @@ struct iwl_cfg_trans_params {
 	    integrated:1,
 	    low_latency_xtal:1,
 	    bisr_workaround:1,
-	    ltr_delay:2;
+	    ltr_delay:2,
+	    imr_enabled:1;
 };
 
 /**
@@ -491,6 +493,7 @@ extern const struct iwl_cfg_trans_params iwl_ax200_trans_cfg;
 extern const struct iwl_cfg_trans_params iwl_snj_trans_cfg;
 extern const struct iwl_cfg_trans_params iwl_so_trans_cfg;
 extern const struct iwl_cfg_trans_params iwl_so_long_latency_trans_cfg;
+extern const struct iwl_cfg_trans_params iwl_so_long_latency_imr_trans_cfg;
 extern const struct iwl_cfg_trans_params iwl_ma_trans_cfg;
 extern const struct iwl_cfg_trans_params iwl_bz_trans_cfg;
 extern const char iwl9162_name[];

drivers/net/wireless/intel/iwlwifi/iwl-context-info-gen3.h

 /* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
 /*
- * Copyright (C) 2018, 2020-2021 Intel Corporation
+ * Copyright (C) 2018, 2020-2022 Intel Corporation
  */
 #ifndef __iwl_context_info_file_gen3_h__
 #define __iwl_context_info_file_gen3_h__
@@ -34,6 +34,7 @@ enum iwl_prph_scratch_mtr_format {
 
 /**
  * enum iwl_prph_scratch_flags - PRPH scratch control flags
+ * @IWL_PRPH_SCRATCH_IMR_DEBUG_EN: IMR support for debug
  * @IWL_PRPH_SCRATCH_EARLY_DEBUG_EN: enable early debug conf
  * @IWL_PRPH_SCRATCH_EDBG_DEST_DRAM: use DRAM, with size allocated
  *	in hwm config.
@@ -55,6 +56,7 @@ enum iwl_prph_scratch_mtr_format {
  * @IWL_PRPH_SCRATCH_RB_SIZE_EXT_16K: 16kB RB size
  */
 enum iwl_prph_scratch_flags {
+	IWL_PRPH_SCRATCH_IMR_DEBUG_EN		= BIT(1),
 	IWL_PRPH_SCRATCH_EARLY_DEBUG_EN		= BIT(4),
 	IWL_PRPH_SCRATCH_EDBG_DEST_DRAM		= BIT(8),
 	IWL_PRPH_SCRATCH_EDBG_DEST_INTERNAL	= BIT(9),

drivers/net/wireless/intel/iwlwifi/pcie/ctxt-info-gen3.c

 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
 /*
- * Copyright (C) 2018-2021 Intel Corporation
+ * Copyright (C) 2018-2022 Intel Corporation
  */
 #include "iwl-trans.h"
 #include "iwl-fh.h"
@@ -125,6 +125,9 @@ int iwl_pcie_ctxt_info_gen3_init(struct iwl_trans *trans,
 	control_flags |= IWL_PRPH_SCRATCH_MTR_MODE;
 	control_flags |= IWL_PRPH_MTR_FORMAT_256B & IWL_PRPH_SCRATCH_MTR_FORMAT;
 
+	if (trans->trans_cfg->imr_enabled)
+		control_flags |= IWL_PRPH_SCRATCH_IMR_DEBUG_EN;
+
 	/* initialize RX default queue */
 	prph_sc_ctrl->rbd_cfg.free_rbd_addr =
 		cpu_to_le64(trans_pcie->rxq->bd_dma);

drivers/net/wireless/intel/iwlwifi/pcie/drv.c

@@ -491,9 +491,10 @@ static const struct pci_device_id iwl_hw_card_ids[] = {
 /* So devices */
 	{IWL_PCI_DEVICE(0x2725, PCI_ANY_ID, iwl_so_trans_cfg)},
 	{IWL_PCI_DEVICE(0x2726, PCI_ANY_ID, iwl_snj_trans_cfg)},
-	{IWL_PCI_DEVICE(0x7A70, PCI_ANY_ID, iwl_so_long_latency_trans_cfg)},
+	{IWL_PCI_DEVICE(0x7A70, PCI_ANY_ID, iwl_so_long_latency_imr_trans_cfg)},
 	{IWL_PCI_DEVICE(0x7AF0, PCI_ANY_ID, iwl_so_trans_cfg)},
 	{IWL_PCI_DEVICE(0x51F0, PCI_ANY_ID, iwl_so_long_latency_trans_cfg)},
+	{IWL_PCI_DEVICE(0x51F1, PCI_ANY_ID, iwl_so_long_latency_imr_trans_cfg)},
 	{IWL_PCI_DEVICE(0x54F0, PCI_ANY_ID, iwl_so_long_latency_trans_cfg)},
 	{IWL_PCI_DEVICE(0x7F70, PCI_ANY_ID, iwl_so_trans_cfg)},