[PATCH net 4/4] net: ipa: fix some register validity checks
From: Alex Elder
Date: Tue Mar 14 2023 - 16:39:08 EST
A recent commit defined HW_PARAM_4 as a GSI register ID but did not
add it to gsi_reg_id_valid() to indicate it's valid (for IPA v5.0+).
Add version checks for the HW_PARAM_2 and INTER_EE IRQ GSI registers
there as well.
IPA v5.0 supports up to 8 source and destination resource groups.
Update the validity check (and the comments where the register IDs
are defined) to reflect that. Similarly update comments and
validity checks for the hash/cache-related registers.
Note that this patch fixes an omission and constrains things
further, but these don't technically represent bugs.
Fixes: f651334e1ef5 ("net: ipa: add HW_PARAM_4 GSI register")
Signed-off-by: Alex Elder <elder@xxxxxxxxxx>
---
drivers/net/ipa/gsi_reg.c | 9 ++++++++-
drivers/net/ipa/ipa_reg.c | 24 ++++++++++++++++--------
drivers/net/ipa/ipa_reg.h | 12 ++++++------
3 files changed, 30 insertions(+), 15 deletions(-)
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/ipa_reg.c b/drivers/net/ipa/ipa_reg.c
index 463a31dfa9f47..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;
@@ -32,11 +43,13 @@ 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_5_0 &&
@@ -52,9 +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_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 ff2be8be0f683..7dd65d39333dd 100644
--- a/drivers/net/ipa/ipa_reg.h
+++ b/drivers/net/ipa/ipa_reg.h
@@ -60,8 +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_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+ */
@@ -76,12 +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 */
--
2.34.1