linux-kernel - [PATCH net-next 4/5] net: ipa: define some new memory regions

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Date:   Fri, 19 Mar 2021 10:24:21 -0500
From:   Alex Elder <elder@...aro.org>
To:     davem@...emloft.net, kuba@...nel.org
Cc:     bjorn.andersson@...aro.org, evgreen@...omium.org,
        cpratapa@...eaurora.org, elder@...nel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH net-next 4/5] net: ipa: define some new memory regions

There are several memory regions that are defined starting with IPA
v4.0, but which were not used for the SC7180 SoC (IPA v4.2).  Even
though they're not used (yet), define them so they are ready to be
used for SoCs when they become supported.

There are two QUOTA statistics memory regions, one for the modem and
one for the AP.  Define distinct names for these regions, and get
rid of the definition of IPA_MEM_STATS_QUOTA.

Signed-off-by: Alex Elder <elder@...aro.org>
---
 drivers/net/ipa/ipa_data-sc7180.c |  2 +-
 drivers/net/ipa/ipa_mem.h         | 10 +++++++++-
 drivers/net/ipa/ipa_qmi.c         |  2 +-
 3 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ipa/ipa_data-sc7180.c b/drivers/net/ipa/ipa_data-sc7180.c
index 0bdb60f6755c4..f65abc19ae9d7 100644
--- a/drivers/net/ipa/ipa_data-sc7180.c
+++ b/drivers/net/ipa/ipa_data-sc7180.c
@@ -268,7 +268,7 @@ static const struct ipa_mem ipa_mem_local_data[] = {
 		.size		= 0x0050,
 		.canary_count	= 2,
 	},
-	[IPA_MEM_STATS_QUOTA] = {
+	[IPA_MEM_STATS_QUOTA_MODEM] = {
 		.offset		= 0x0a50,
 		.size		= 0x0060,
 		.canary_count	= 2,
diff --git a/drivers/net/ipa/ipa_mem.h b/drivers/net/ipa/ipa_mem.h
index f99180f84f0dd..f82e8939622bb 100644
--- a/drivers/net/ipa/ipa_mem.h
+++ b/drivers/net/ipa/ipa_mem.h
@@ -28,6 +28,7 @@ struct ipa_mem_data;
  * The set of memory regions is defined in configuration data.  They are
  * subject to these constraints:
  * - a zero offset and zero size represents and undefined region
+ * - a region's size does not include space for its "canary" values
  * - a region's offset is defined to be *past* all "canary" values
  * - offset must be large enough to account for all canaries
  * - a region's size may be zero, but may still have canaries
@@ -56,9 +57,16 @@ enum ipa_mem_id {
 	IPA_MEM_AP_HEADER,		/* 0 canaries */
 	IPA_MEM_MODEM_PROC_CTX,		/* 2 canaries */
 	IPA_MEM_AP_PROC_CTX,		/* 0 canaries */
+	IPA_MEM_NAT_TABLE,		/* 4 canaries (IPA v4.5 and above) */
 	IPA_MEM_PDN_CONFIG,		/* 2 canaries (IPA v4.0 and above) */
-	IPA_MEM_STATS_QUOTA,		/* 2 canaries (IPA v4.0 and above) */
+	IPA_MEM_STATS_QUOTA_MODEM,	/* 2 canaries (IPA v4.0 and above) */
+	IPA_MEM_STATS_QUOTA_AP,		/* 0 canaries (IPA v4.0 and above) */
 	IPA_MEM_STATS_TETHERING,	/* 0 canaries (IPA v4.0 and above) */
+	IPA_MEM_STATS_V4_FILTER,	/* 0 canaries (IPA v4.0-v4.2) */
+	IPA_MEM_STATS_V6_FILTER,	/* 0 canaries (IPA v4.0-v4.2) */
+	IPA_MEM_STATS_V4_ROUTE,		/* 0 canaries (IPA v4.0-v4.2) */
+	IPA_MEM_STATS_V6_ROUTE,		/* 0 canaries (IPA v4.0-v4.2) */
+	IPA_MEM_STATS_FILTER_ROUTE,	/* 0 canaries (IPA v4.5 and above) */
 	IPA_MEM_STATS_DROP,		/* 0 canaries (IPA v4.0 and above) */
 	IPA_MEM_MODEM,			/* 0 canaries */
 	IPA_MEM_UC_EVENT_RING,		/* 1 canary */
diff --git a/drivers/net/ipa/ipa_qmi.c b/drivers/net/ipa/ipa_qmi.c
index 2fc64483f2753..af8666b89b375 100644
--- a/drivers/net/ipa/ipa_qmi.c
+++ b/drivers/net/ipa/ipa_qmi.c
@@ -378,7 +378,7 @@ init_modem_driver_req(struct ipa_qmi *ipa_qmi)
 	/* None of the stats fields are valid (IPA v4.0 and above) */
 
 	if (ipa->version != IPA_VERSION_3_5_1) {
-		mem = &ipa->mem[IPA_MEM_STATS_QUOTA];
+		mem = &ipa->mem[IPA_MEM_STATS_QUOTA_MODEM];
 		if (mem->size) {
 			req.hw_stats_quota_base_addr_valid = 1;
 			req.hw_stats_quota_base_addr =
-- 
2.27.0