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net: ipa: support more than 6 resource groups

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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>
This commit is contained in:
Alex Elder 2021-03-26 10:11:22 -05:00 committed by David S. Miller
parent 4fd704b360
commit 3219953bed
3 changed files with 22 additions and 4 deletions
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4
drivers/net/ipa/ipa_data.h
View File

@ -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 {

4
drivers/net/ipa/ipa_reg.h
View File

@ -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)

18
drivers/net/ipa/ipa_resource.c
View File

@ -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 */