diff --git a/drivers/net/ipa/gsi_reg.c b/drivers/net/ipa/gsi_reg.c
index 1412b67304c8e..1651fbad4bd54 100644
--- a/drivers/net/ipa/gsi_reg.c
+++ b/drivers/net/ipa/gsi_reg.c
@@ -15,6 +15,14 @@ static bool gsi_reg_id_valid(struct gsi *gsi, enum gsi_reg_id reg_id)
 	switch (reg_id) {
 	case INTER_EE_SRC_CH_IRQ_MSK:
 	case INTER_EE_SRC_EV_CH_IRQ_MSK:
+		return gsi->version >= IPA_VERSION_3_5;
+
+	case HW_PARAM_2:
+		return gsi->version >= IPA_VERSION_3_5_1;
+
+	case HW_PARAM_4:
+		return gsi->version >= IPA_VERSION_5_0;
+
 	case CH_C_CNTXT_0:
 	case CH_C_CNTXT_1:
 	case CH_C_CNTXT_2:
@@ -43,7 +51,6 @@ static bool gsi_reg_id_valid(struct gsi *gsi, enum gsi_reg_id reg_id)
 	case CH_CMD:
 	case EV_CH_CMD:
 	case GENERIC_CMD:
-	case HW_PARAM_2:
 	case CNTXT_TYPE_IRQ:
 	case CNTXT_TYPE_IRQ_MSK:
 	case CNTXT_SRC_CH_IRQ:
diff --git a/drivers/net/ipa/gsi_reg.h b/drivers/net/ipa/gsi_reg.h
index f62f0a5c653d1..48fde65fa2e8a 100644
--- a/drivers/net/ipa/gsi_reg.h
+++ b/drivers/net/ipa/gsi_reg.h
@@ -10,6 +10,10 @@
 
 #include <linux/bits.h>
 
+struct platform_device;
+
+struct gsi;
+
 /**
  * DOC: GSI Registers
  *
diff --git a/drivers/net/ipa/ipa_reg.c b/drivers/net/ipa/ipa_reg.c
index 735fa65916097..3f475428ddddb 100644
--- a/drivers/net/ipa/ipa_reg.c
+++ b/drivers/net/ipa/ipa_reg.c
@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0
 
 /* Copyright (c) 2012-2018, The Linux Foundation. All rights reserved.
- * Copyright (C) 2019-2022 Linaro Ltd.
+ * Copyright (C) 2019-2023 Linaro Ltd.
  */
 
 #include <linux/io.h>
@@ -15,6 +15,17 @@ static bool ipa_reg_id_valid(struct ipa *ipa, enum ipa_reg_id reg_id)
 	enum ipa_version version = ipa->version;
 
 	switch (reg_id) {
+	case FILT_ROUT_HASH_EN:
+		return version == IPA_VERSION_4_2;
+
+	case FILT_ROUT_HASH_FLUSH:
+		return version < IPA_VERSION_5_0 && version != IPA_VERSION_4_2;
+
+	case FILT_ROUT_CACHE_FLUSH:
+	case ENDP_FILTER_CACHE_CFG:
+	case ENDP_ROUTER_CACHE_CFG:
+		return version >= IPA_VERSION_5_0;
+
 	case IPA_BCR:
 	case COUNTER_CFG:
 		return version < IPA_VERSION_4_5;
@@ -32,14 +43,17 @@ static bool ipa_reg_id_valid(struct ipa *ipa, enum ipa_reg_id reg_id)
 	case SRC_RSRC_GRP_45_RSRC_TYPE:
 	case DST_RSRC_GRP_45_RSRC_TYPE:
 		return version <= IPA_VERSION_3_1 ||
-		       version == IPA_VERSION_4_5;
+		       version == IPA_VERSION_4_5 ||
+		       version == IPA_VERSION_5_0;
 
 	case SRC_RSRC_GRP_67_RSRC_TYPE:
 	case DST_RSRC_GRP_67_RSRC_TYPE:
-		return version <= IPA_VERSION_3_1;
+		return version <= IPA_VERSION_3_1 ||
+		       version == IPA_VERSION_5_0;
 
 	case ENDP_FILTER_ROUTER_HSH_CFG:
-		return version != IPA_VERSION_4_2;
+		return version < IPA_VERSION_5_0 &&
+			version != IPA_VERSION_4_2;
 
 	case IRQ_SUSPEND_EN:
 	case IRQ_SUSPEND_CLR:
@@ -51,10 +65,6 @@ static bool ipa_reg_id_valid(struct ipa *ipa, enum ipa_reg_id reg_id)
 	case SHARED_MEM_SIZE:
 	case QSB_MAX_WRITES:
 	case QSB_MAX_READS:
-	case FILT_ROUT_HASH_EN:
-	case FILT_ROUT_CACHE_CFG:
-	case FILT_ROUT_HASH_FLUSH:
-	case FILT_ROUT_CACHE_FLUSH:
 	case STATE_AGGR_ACTIVE:
 	case LOCAL_PKT_PROC_CNTXT:
 	case AGGR_FORCE_CLOSE:
@@ -76,8 +86,6 @@ static bool ipa_reg_id_valid(struct ipa *ipa, enum ipa_reg_id reg_id)
 	case ENDP_INIT_RSRC_GRP:
 	case ENDP_INIT_SEQ:
 	case ENDP_STATUS:
-	case ENDP_FILTER_CACHE_CFG:
-	case ENDP_ROUTER_CACHE_CFG:
 	case IPA_IRQ_STTS:
 	case IPA_IRQ_EN:
 	case IPA_IRQ_CLR:
diff --git a/drivers/net/ipa/ipa_reg.h b/drivers/net/ipa/ipa_reg.h
index 28aa1351dd488..7dd65d39333dd 100644
--- a/drivers/net/ipa/ipa_reg.h
+++ b/drivers/net/ipa/ipa_reg.h
@@ -60,9 +60,8 @@ enum ipa_reg_id {
 	SHARED_MEM_SIZE,
 	QSB_MAX_WRITES,
 	QSB_MAX_READS,
-	FILT_ROUT_HASH_EN,				/* Not IPA v5.0+ */
-	FILT_ROUT_CACHE_CFG,				/* IPA v5.0+ */
-	FILT_ROUT_HASH_FLUSH,				/* Not IPA v5.0+ */
+	FILT_ROUT_HASH_EN,				/* IPA v4.2 */
+	FILT_ROUT_HASH_FLUSH,			/* Not IPA v4.2 nor IPA v5.0+ */
 	FILT_ROUT_CACHE_FLUSH,				/* IPA v5.0+ */
 	STATE_AGGR_ACTIVE,
 	IPA_BCR,					/* Not IPA v4.5+ */
@@ -77,12 +76,12 @@ enum ipa_reg_id {
 	TIMERS_PULSE_GRAN_CFG,				/* IPA v4.5+ */
 	SRC_RSRC_GRP_01_RSRC_TYPE,
 	SRC_RSRC_GRP_23_RSRC_TYPE,
-	SRC_RSRC_GRP_45_RSRC_TYPE,		/* Not IPA v3.5+, IPA v4.5 */
-	SRC_RSRC_GRP_67_RSRC_TYPE,			/* Not IPA v3.5+ */
+	SRC_RSRC_GRP_45_RSRC_TYPE,	/* Not IPA v3.5+; IPA v4.5, IPA v5.0 */
+	SRC_RSRC_GRP_67_RSRC_TYPE,		/* Not IPA v3.5+; IPA v5.0 */
 	DST_RSRC_GRP_01_RSRC_TYPE,
 	DST_RSRC_GRP_23_RSRC_TYPE,
-	DST_RSRC_GRP_45_RSRC_TYPE,		/* Not IPA v3.5+, IPA v4.5 */
-	DST_RSRC_GRP_67_RSRC_TYPE,			/* Not IPA v3.5+ */
+	DST_RSRC_GRP_45_RSRC_TYPE,	/* Not IPA v3.5+; IPA v4.5, IPA v5.0 */
+	DST_RSRC_GRP_67_RSRC_TYPE,		/* Not IPA v3.5+; IPA v5.0 */
 	ENDP_INIT_CTRL,		/* Not IPA v4.2+ for TX, not IPA v4.0+ for RX */
 	ENDP_INIT_CFG,
 	ENDP_INIT_NAT,			/* TX only */
@@ -206,14 +205,6 @@ enum ipa_reg_qsb_max_reads_field_id {
 	GEN_QMB_1_MAX_READS_BEATS,			/* IPA v4.0+ */
 };
 
-/* FILT_ROUT_CACHE_CFG register */
-enum ipa_reg_filt_rout_cache_cfg_field_id {
-	ROUTER_CACHE_EN,
-	FILTER_CACHE_EN,
-	LOW_PRI_HASH_HIT_DISABLE,
-	LRU_EVICTION_THRESHOLD,
-};
-
 /* FILT_ROUT_HASH_EN and FILT_ROUT_HASH_FLUSH registers */
 enum ipa_reg_filt_rout_hash_field_id {
 	IPV6_ROUTER_HASH,
diff --git a/drivers/net/ipa/reg.h b/drivers/net/ipa/reg.h
index 57b457f39b6e2..2ee07eebca677 100644
--- a/drivers/net/ipa/reg.h
+++ b/drivers/net/ipa/reg.h
@@ -6,7 +6,8 @@
 #define _REG_H_
 
 #include <linux/types.h>
-#include <linux/bits.h>
+#include <linux/log2.h>
+#include <linux/bug.h>
 
 /**
  * struct reg - A register descriptor