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authorAlex Elder <elder@linaro.org>2021-03-26 10:11:22 -0500
committerDavid S. Miller <davem@davemloft.net>2021-03-26 15:02:39 -0700
commit3219953bedc563ef988fa423f8ac67a441f69b4b (patch)
treee9d2f56849a04dd06bbda8ce7bac8154ea16bf7b /drivers/net/ipa
parent4fd704b3608a4c89260ea33895a694bc5385e00f (diff)
net: ipa: support more than 6 resource groups
IPA versions 3.0 and 3.1 support up to 8 resource groups. There is some interest in supporting these older versions of the hardware, so update the resource configuration code to program resource limits for these groups if specified. Signed-off-by: Alex Elder <elder@linaro.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ipa')
-rw-r--r--drivers/net/ipa/ipa_data.h4
-rw-r--r--drivers/net/ipa/ipa_reg.h4
-rw-r--r--drivers/net/ipa/ipa_resource.c18
3 files changed, 22 insertions, 4 deletions
diff --git a/drivers/net/ipa/ipa_data.h b/drivers/net/ipa/ipa_data.h
index c5d763a3782f..ea8f99286228 100644
--- a/drivers/net/ipa/ipa_data.h
+++ b/drivers/net/ipa/ipa_data.h
@@ -46,8 +46,8 @@
* the IPA endpoint.
*/
-/* The maximum value returned by ipa_resource_group_{src,dst}_count() */
-#define IPA_RESOURCE_GROUP_MAX 5
+/* The maximum possible number of source or destination resource groups */
+#define IPA_RESOURCE_GROUP_MAX 8
/** enum ipa_qsb_master_id - array index for IPA QSB configuration data */
enum ipa_qsb_master_id {
diff --git a/drivers/net/ipa/ipa_reg.h b/drivers/net/ipa/ipa_reg.h
index 9c798cef7b2e..de2a944bad86 100644
--- a/drivers/net/ipa/ipa_reg.h
+++ b/drivers/net/ipa/ipa_reg.h
@@ -353,12 +353,16 @@ enum ipa_pulse_gran {
(0x00000404 + 0x0020 * (rt))
#define IPA_REG_SRC_RSRC_GRP_45_RSRC_TYPE_N_OFFSET(rt) \
(0x00000408 + 0x0020 * (rt))
+#define IPA_REG_SRC_RSRC_GRP_67_RSRC_TYPE_N_OFFSET(rt) \
+ (0x0000040c + 0x0020 * (rt))
#define IPA_REG_DST_RSRC_GRP_01_RSRC_TYPE_N_OFFSET(rt) \
(0x00000500 + 0x0020 * (rt))
#define IPA_REG_DST_RSRC_GRP_23_RSRC_TYPE_N_OFFSET(rt) \
(0x00000504 + 0x0020 * (rt))
#define IPA_REG_DST_RSRC_GRP_45_RSRC_TYPE_N_OFFSET(rt) \
(0x00000508 + 0x0020 * (rt))
+#define IPA_REG_DST_RSRC_GRP_67_RSRC_TYPE_N_OFFSET(rt) \
+ (0x0000050c + 0x0020 * (rt))
/* The next four fields are used for all resource group registers */
#define X_MIN_LIM_FMASK GENMASK(5, 0)
#define X_MAX_LIM_FMASK GENMASK(13, 8)
diff --git a/drivers/net/ipa/ipa_resource.c b/drivers/net/ipa/ipa_resource.c
index 578ff070d405..85f922d6f222 100644
--- a/drivers/net/ipa/ipa_resource.c
+++ b/drivers/net/ipa/ipa_resource.c
@@ -34,8 +34,8 @@ static bool ipa_resource_limits_valid(struct ipa *ipa,
u32 i;
u32 j;
- /* We program at most 6 source or destination resource group limits */
- BUILD_BUG_ON(IPA_RESOURCE_GROUP_MAX > 6);
+ /* We program at most 8 source or destination resource group limits */
+ BUILD_BUG_ON(IPA_RESOURCE_GROUP_MAX > 8);
group_count = data->rsrc_group_src_count;
if (!group_count || group_count > IPA_RESOURCE_GROUP_MAX)
@@ -113,6 +113,13 @@ static void ipa_resource_config_src(struct ipa *ipa, u32 resource_type,
offset = IPA_REG_SRC_RSRC_GRP_45_RSRC_TYPE_N_OFFSET(resource_type);
ylimits = group_count == 5 ? NULL : &resource->limits[5];
ipa_resource_config_common(ipa, offset, &resource->limits[4], ylimits);
+
+ if (group_count < 7)
+ return;
+
+ offset = IPA_REG_SRC_RSRC_GRP_67_RSRC_TYPE_N_OFFSET(resource_type);
+ ylimits = group_count == 7 ? NULL : &resource->limits[7];
+ ipa_resource_config_common(ipa, offset, &resource->limits[6], ylimits);
}
static void ipa_resource_config_dst(struct ipa *ipa, u32 resource_type,
@@ -142,6 +149,13 @@ static void ipa_resource_config_dst(struct ipa *ipa, u32 resource_type,
offset = IPA_REG_DST_RSRC_GRP_45_RSRC_TYPE_N_OFFSET(resource_type);
ylimits = group_count == 5 ? NULL : &resource->limits[5];
ipa_resource_config_common(ipa, offset, &resource->limits[4], ylimits);
+
+ if (group_count < 7)
+ return;
+
+ offset = IPA_REG_DST_RSRC_GRP_67_RSRC_TYPE_N_OFFSET(resource_type);
+ ylimits = group_count == 7 ? NULL : &resource->limits[7];
+ ipa_resource_config_common(ipa, offset, &resource->limits[6], ylimits);
}
/* Configure resources */