Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Alex Elder | 930 | 99.89% | 20 | 95.24% |
Konrad Dybcio | 1 | 0.11% | 1 | 4.76% |
Total | 931 | 21 |
// SPDX-License-Identifier: GPL-2.0 /* Copyright (c) 2012-2018, The Linux Foundation. All rights reserved. * Copyright (C) 2018-2022 Linaro Ltd. */ #include <linux/types.h> #include <linux/kernel.h> #include "ipa.h" #include "ipa_data.h" #include "ipa_reg.h" #include "ipa_resource.h" /** * DOC: IPA Resources * * The IPA manages a set of resources internally for various purposes. * A given IPA version has a fixed number of resource types, and a fixed * total number of resources of each type. "Source" resource types * are separate from "destination" resource types. * * Each version of IPA also has some number of resource groups. Each * endpoint is assigned to a resource group, and all endpoints in the * same group share pools of each type of resource. A subset of the * total resources of each type is assigned for use by each group. */ 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 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) 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 *resource; resource = &data->resource_src[i]; for (j = group_count; j < IPA_RESOURCE_GROUP_MAX; j++) if (resource->limits[j].min || resource->limits[j].max) return false; } group_count = data->rsrc_group_dst_count; if (!group_count || group_count > IPA_RESOURCE_GROUP_MAX) return false; for (i = 0; i < data->resource_dst_count; i++) { const struct ipa_resource *resource; resource = &data->resource_dst[i]; for (j = group_count; j < IPA_RESOURCE_GROUP_MAX; j++) if (resource->limits[j].min || resource->limits[j].max) return false; } return true; } static void ipa_resource_config_common(struct ipa *ipa, u32 resource_type, const struct reg *reg, const struct ipa_resource_limits *xlimits, const struct ipa_resource_limits *ylimits) { u32 val; val = reg_encode(reg, X_MIN_LIM, xlimits->min); val |= reg_encode(reg, X_MAX_LIM, xlimits->max); if (ylimits) { val |= reg_encode(reg, Y_MIN_LIM, ylimits->min); val |= reg_encode(reg, Y_MAX_LIM, ylimits->max); } iowrite32(val, ipa->reg_virt + reg_n_offset(reg, resource_type)); } static void ipa_resource_config_src(struct ipa *ipa, u32 resource_type, const struct ipa_resource_data *data) { u32 group_count = data->rsrc_group_src_count; const struct ipa_resource_limits *ylimits; const struct ipa_resource *resource; const struct reg *reg; resource = &data->resource_src[resource_type]; reg = ipa_reg(ipa, SRC_RSRC_GRP_01_RSRC_TYPE); ylimits = group_count == 1 ? NULL : &resource->limits[1]; ipa_resource_config_common(ipa, resource_type, reg, &resource->limits[0], ylimits); if (group_count < 3) return; reg = ipa_reg(ipa, SRC_RSRC_GRP_23_RSRC_TYPE); ylimits = group_count == 3 ? NULL : &resource->limits[3]; ipa_resource_config_common(ipa, resource_type, reg, &resource->limits[2], ylimits); if (group_count < 5) return; reg = ipa_reg(ipa, SRC_RSRC_GRP_45_RSRC_TYPE); ylimits = group_count == 5 ? NULL : &resource->limits[5]; ipa_resource_config_common(ipa, resource_type, reg, &resource->limits[4], ylimits); if (group_count < 7) return; reg = ipa_reg(ipa, SRC_RSRC_GRP_67_RSRC_TYPE); ylimits = group_count == 7 ? NULL : &resource->limits[7]; ipa_resource_config_common(ipa, resource_type, reg, &resource->limits[6], ylimits); } static void ipa_resource_config_dst(struct ipa *ipa, u32 resource_type, const struct ipa_resource_data *data) { u32 group_count = data->rsrc_group_dst_count; const struct ipa_resource_limits *ylimits; const struct ipa_resource *resource; const struct reg *reg; resource = &data->resource_dst[resource_type]; reg = ipa_reg(ipa, DST_RSRC_GRP_01_RSRC_TYPE); ylimits = group_count == 1 ? NULL : &resource->limits[1]; ipa_resource_config_common(ipa, resource_type, reg, &resource->limits[0], ylimits); if (group_count < 3) return; reg = ipa_reg(ipa, DST_RSRC_GRP_23_RSRC_TYPE); ylimits = group_count == 3 ? NULL : &resource->limits[3]; ipa_resource_config_common(ipa, resource_type, reg, &resource->limits[2], ylimits); if (group_count < 5) return; reg = ipa_reg(ipa, DST_RSRC_GRP_45_RSRC_TYPE); ylimits = group_count == 5 ? NULL : &resource->limits[5]; ipa_resource_config_common(ipa, resource_type, reg, &resource->limits[4], ylimits); if (group_count < 7) return; reg = ipa_reg(ipa, DST_RSRC_GRP_67_RSRC_TYPE); ylimits = group_count == 7 ? NULL : &resource->limits[7]; ipa_resource_config_common(ipa, resource_type, reg, &resource->limits[6], ylimits); } /* Configure resources; there is no ipa_resource_deconfig() */ 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, i, data); for (i = 0; i < data->resource_dst_count; i++) ipa_resource_config_dst(ipa, i, data); return 0; }
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