net: ipa: introduce ipa_resource.c

Separate the IPA resource-related code into a new source file,
"ipa_resource.c", and matching header file "ipa_resource.h".

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 146 deletions

diff --git a/drivers/net/ipa/ipa_main.c b/drivers/net/ipa/ipa_main.c
index f071e90de540..e18029152d78 100644
--- a/drivers/net/ipa/ipa_main.c
+++ b/drivers/net/ipa/ipa_main.c
@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0
 
 /* Copyright (c) 2012-2018, The Linux Foundation. All rights reserved.
- * Copyright (C) 2018-2020 Linaro Ltd.
+ * Copyright (C) 2018-2021 Linaro Ltd.
  */
 
 #include <linux/types.h>
@@ -22,6 +22,7 @@
 #include "ipa_clock.h"
 #include "ipa_data.h"
 #include "ipa_endpoint.h"
+#include "ipa_resource.h"
 #include "ipa_cmd.h"
 #include "ipa_reg.h"
 #include "ipa_mem.h"
@@ -452,151 +453,6 @@ static void ipa_hardware_deconfig(struct ipa *ipa)
 	ipa_hardware_dcd_deconfig(ipa);
 }
 
-#ifdef IPA_VALIDATION
-
-static bool ipa_resource_limits_valid(struct ipa *ipa,
-				      const struct ipa_resource_data *data)
-{
-	u32 group_count;
-	u32 i;
-	u32 j;
-
-	/* We program at most 6 source or destination resource group limits */
-	BUILD_BUG_ON(IPA_RESOURCE_GROUP_SRC_MAX > 6);
-
-	group_count = ipa_resource_group_src_count(ipa->version);
-	if (!group_count || group_count > IPA_RESOURCE_GROUP_SRC_MAX)
-		return false;
-
-	/* Return an error if a non-zero resource limit is specified
-	 * for a resource group not supported by hardware.
-	 */
-	for (i = 0; i < data->resource_src_count; i++) {
-		const struct ipa_resource_src *resource;
-
-		resource = &data->resource_src[i];
-		for (j = group_count; j < IPA_RESOURCE_GROUP_SRC_MAX; j++)
-			if (resource->limits[j].min || resource->limits[j].max)
-				return false;
-	}
-
-	group_count = ipa_resource_group_dst_count(ipa->version);
-	if (!group_count || group_count > IPA_RESOURCE_GROUP_DST_MAX)
-		return false;
-
-	for (i = 0; i < data->resource_dst_count; i++) {
-		const struct ipa_resource_dst *resource;
-
-		resource = &data->resource_dst[i];
-		for (j = group_count; j < IPA_RESOURCE_GROUP_DST_MAX; j++)
-			if (resource->limits[j].min || resource->limits[j].max)
-				return false;
-	}
-
-	return true;
-}
-
-#else /* !IPA_VALIDATION */
-
-static bool ipa_resource_limits_valid(struct ipa *ipa,
-				      const struct ipa_resource_data *data)
-{
-	return true;
-}
-
-#endif /* !IPA_VALIDATION */
-
-static void
-ipa_resource_config_common(struct ipa *ipa, u32 offset,
-			   const struct ipa_resource_limits *xlimits,
-			   const struct ipa_resource_limits *ylimits)
-{
-	u32 val;
-
-	val = u32_encode_bits(xlimits->min, X_MIN_LIM_FMASK);
-	val |= u32_encode_bits(xlimits->max, X_MAX_LIM_FMASK);
-	if (ylimits) {
-		val |= u32_encode_bits(ylimits->min, Y_MIN_LIM_FMASK);
-		val |= u32_encode_bits(ylimits->max, Y_MAX_LIM_FMASK);
-	}
-
-	iowrite32(val, ipa->reg_virt + offset);
-}
-
-static void ipa_resource_config_src(struct ipa *ipa,
-				    const struct ipa_resource_src *resource)
-{
-	u32 group_count = ipa_resource_group_src_count(ipa->version);
-	const struct ipa_resource_limits *ylimits;
-	u32 offset;
-
-	offset = IPA_REG_SRC_RSRC_GRP_01_RSRC_TYPE_N_OFFSET(resource->type);
-	ylimits = group_count == 1 ? NULL : &resource->limits[1];
-	ipa_resource_config_common(ipa, offset, &resource->limits[0], ylimits);
-
-	if (group_count < 2)
-		return;
-
-	offset = IPA_REG_SRC_RSRC_GRP_23_RSRC_TYPE_N_OFFSET(resource->type);
-	ylimits = group_count == 3 ? NULL : &resource->limits[3];
-	ipa_resource_config_common(ipa, offset, &resource->limits[2], ylimits);
-
-	if (group_count < 4)
-		return;
-
-	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);
-}
-
-static void ipa_resource_config_dst(struct ipa *ipa,
-				    const struct ipa_resource_dst *resource)
-{
-	u32 group_count = ipa_resource_group_dst_count(ipa->version);
-	const struct ipa_resource_limits *ylimits;
-	u32 offset;
-
-	offset = IPA_REG_DST_RSRC_GRP_01_RSRC_TYPE_N_OFFSET(resource->type);
-	ylimits = group_count == 1 ? NULL : &resource->limits[1];
-	ipa_resource_config_common(ipa, offset, &resource->limits[0], ylimits);
-
-	if (group_count < 2)
-		return;
-
-	offset = IPA_REG_DST_RSRC_GRP_23_RSRC_TYPE_N_OFFSET(resource->type);
-	ylimits = group_count == 3 ? NULL : &resource->limits[3];
-	ipa_resource_config_common(ipa, offset, &resource->limits[2], ylimits);
-
-	if (group_count < 4)
-		return;
-
-	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);
-}
-
-static int
-ipa_resource_config(struct ipa *ipa, const struct ipa_resource_data *data)
-{
-	u32 i;
-
-	if (!ipa_resource_limits_valid(ipa, data))
-		return -EINVAL;
-
-	for (i = 0; i < data->resource_src_count; i++)
-		ipa_resource_config_src(ipa, &data->resource_src[i]);
-
-	for (i = 0; i < data->resource_dst_count; i++)
-		ipa_resource_config_dst(ipa, &data->resource_dst[i]);
-
-	return 0;
-}
-
-static void ipa_resource_deconfig(struct ipa *ipa)
-{
-	/* Nothing to do */
-}
-
 /**
  * ipa_config() - Configure IPA hardware
  * @ipa:	IPA pointer