// SPDX-License-Identifier: GPL-2.0 /* Copyright (c) 2012-2018, The Linux Foundation. All rights reserved. * Copyright (C) 2019-2023 Linaro Ltd. */ #include <linux/io.h> #include "ipa.h" #include "ipa_reg.h" /* Is this register ID valid for the current IPA version? */ static bool ipa_reg_id_valid(struct ipa *ipa, enum ipa_reg_id reg_id) { enum ipa_version version = ipa->version; switch (reg_id) { case FILT_ROUT_HASH_EN: return version == IPA_VERSION_4_2; case FILT_ROUT_HASH_FLUSH: return version < IPA_VERSION_5_0 && version != IPA_VERSION_4_2; case FILT_ROUT_CACHE_FLUSH: case ENDP_FILTER_CACHE_CFG: case ENDP_ROUTER_CACHE_CFG: return version >= IPA_VERSION_5_0; case IPA_BCR: case COUNTER_CFG: return version < IPA_VERSION_4_5; case IPA_TX_CFG: case FLAVOR_0: case IDLE_INDICATION_CFG: return version >= IPA_VERSION_3_5; case QTIME_TIMESTAMP_CFG: case TIMERS_XO_CLK_DIV_CFG: case TIMERS_PULSE_GRAN_CFG: return version >= IPA_VERSION_4_5; case SRC_RSRC_GRP_45_RSRC_TYPE: case DST_RSRC_GRP_45_RSRC_TYPE: return version <= IPA_VERSION_3_1 || version == IPA_VERSION_4_5 || version == IPA_VERSION_5_0; case SRC_RSRC_GRP_67_RSRC_TYPE: case DST_RSRC_GRP_67_RSRC_TYPE: return version <= IPA_VERSION_3_1 || version == IPA_VERSION_5_0; case ENDP_FILTER_ROUTER_HSH_CFG: return version < IPA_VERSION_5_0 && version != IPA_VERSION_4_2; case IRQ_SUSPEND_EN: case IRQ_SUSPEND_CLR: return version >= IPA_VERSION_3_1; case COMP_CFG: case CLKON_CFG: case ROUTE: case SHARED_MEM_SIZE: case QSB_MAX_WRITES: case QSB_MAX_READS: case STATE_AGGR_ACTIVE: case LOCAL_PKT_PROC_CNTXT: case AGGR_FORCE_CLOSE: case SRC_RSRC_GRP_01_RSRC_TYPE: case SRC_RSRC_GRP_23_RSRC_TYPE: case DST_RSRC_GRP_01_RSRC_TYPE: case DST_RSRC_GRP_23_RSRC_TYPE: case ENDP_INIT_CTRL: case ENDP_INIT_CFG: case ENDP_INIT_NAT: case ENDP_INIT_HDR: case ENDP_INIT_HDR_EXT: case ENDP_INIT_HDR_METADATA_MASK: case ENDP_INIT_MODE: case ENDP_INIT_AGGR: case ENDP_INIT_HOL_BLOCK_EN: case ENDP_INIT_HOL_BLOCK_TIMER: case ENDP_INIT_DEAGGR: case ENDP_INIT_RSRC_GRP: case ENDP_INIT_SEQ: case ENDP_STATUS: case IPA_IRQ_STTS: case IPA_IRQ_EN: case IPA_IRQ_CLR: case IPA_IRQ_UC: case IRQ_SUSPEND_INFO: return true; /* These should be defined for all versions */ default: return false; } } const struct reg *ipa_reg(struct ipa *ipa, enum ipa_reg_id reg_id) { if (WARN(!ipa_reg_id_valid(ipa, reg_id), "invalid reg %u\n", reg_id)) return NULL; return reg(ipa->regs, reg_id); } static const struct regs *ipa_regs(enum ipa_version version) { switch (version) { case IPA_VERSION_3_1: return &ipa_regs_v3_1; case IPA_VERSION_3_5_1: return &ipa_regs_v3_5_1; case IPA_VERSION_4_2: return &ipa_regs_v4_2; case IPA_VERSION_4_5: return &ipa_regs_v4_5; case IPA_VERSION_4_7: return &ipa_regs_v4_7; case IPA_VERSION_4_9: return &ipa_regs_v4_9; case IPA_VERSION_4_11: return &ipa_regs_v4_11; case IPA_VERSION_5_0: return &ipa_regs_v5_0; default: return NULL; } } int ipa_reg_init(struct ipa *ipa) { struct device *dev = &ipa->pdev->dev; const struct regs *regs; struct resource *res; regs = ipa_regs(ipa->version); if (!regs) return -EINVAL; if (WARN_ON(regs->reg_count > IPA_REG_ID_COUNT)) return -EINVAL; /* Setup IPA register memory */ res = platform_get_resource_byname(ipa->pdev, IORESOURCE_MEM, "ipa-reg"); if (!res) { dev_err(dev, "DT error getting \"ipa-reg\" memory property\n"); return -ENODEV; } ipa->reg_virt = ioremap(res->start, resource_size(res)); if (!ipa->reg_virt) { dev_err(dev, "unable to remap \"ipa-reg\" memory\n"); return -ENOMEM; } ipa->regs = regs; return 0; } void ipa_reg_exit(struct ipa *ipa) { iounmap(ipa->reg_virt); }