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1// SPDX-License-Identifier: GPL-2.02 3/* Copyright (c) 2012-2018, The Linux Foundation. All rights reserved.4 * Copyright (C) 2019-2024 Linaro Ltd.5 */6 7#include <linux/io.h>8#include <linux/platform_device.h>9 10#include "ipa.h"11#include "ipa_reg.h"12 13/* Is this register ID valid for the current IPA version? */14static bool ipa_reg_id_valid(struct ipa *ipa, enum ipa_reg_id reg_id)15{16 enum ipa_version version = ipa->version;17 18 switch (reg_id) {19 case FILT_ROUT_HASH_EN:20 return version == IPA_VERSION_4_2;21 22 case FILT_ROUT_HASH_FLUSH:23 return version < IPA_VERSION_5_0 && version != IPA_VERSION_4_2;24 25 case FILT_ROUT_CACHE_FLUSH:26 case ENDP_FILTER_CACHE_CFG:27 case ENDP_ROUTER_CACHE_CFG:28 return version >= IPA_VERSION_5_0;29 30 case IPA_BCR:31 case COUNTER_CFG:32 return version < IPA_VERSION_4_5;33 34 case IPA_TX_CFG:35 case FLAVOR_0:36 case IDLE_INDICATION_CFG:37 return version >= IPA_VERSION_3_5;38 39 case QTIME_TIMESTAMP_CFG:40 case TIMERS_XO_CLK_DIV_CFG:41 case TIMERS_PULSE_GRAN_CFG:42 return version >= IPA_VERSION_4_5;43 44 case SRC_RSRC_GRP_45_RSRC_TYPE:45 case DST_RSRC_GRP_45_RSRC_TYPE:46 return version <= IPA_VERSION_3_1 ||47 version == IPA_VERSION_4_5 ||48 version >= IPA_VERSION_5_0;49 50 case SRC_RSRC_GRP_67_RSRC_TYPE:51 case DST_RSRC_GRP_67_RSRC_TYPE:52 return version <= IPA_VERSION_3_1 ||53 version >= IPA_VERSION_5_0;54 55 case ENDP_FILTER_ROUTER_HSH_CFG:56 return version < IPA_VERSION_5_0 &&57 version != IPA_VERSION_4_2;58 59 case IRQ_SUSPEND_EN:60 case IRQ_SUSPEND_CLR:61 return version >= IPA_VERSION_3_1;62 63 case COMP_CFG:64 case CLKON_CFG:65 case ROUTE:66 case SHARED_MEM_SIZE:67 case QSB_MAX_WRITES:68 case QSB_MAX_READS:69 case STATE_AGGR_ACTIVE:70 case LOCAL_PKT_PROC_CNTXT:71 case AGGR_FORCE_CLOSE:72 case SRC_RSRC_GRP_01_RSRC_TYPE:73 case SRC_RSRC_GRP_23_RSRC_TYPE:74 case DST_RSRC_GRP_01_RSRC_TYPE:75 case DST_RSRC_GRP_23_RSRC_TYPE:76 case ENDP_INIT_CTRL:77 case ENDP_INIT_CFG:78 case ENDP_INIT_NAT:79 case ENDP_INIT_HDR:80 case ENDP_INIT_HDR_EXT:81 case ENDP_INIT_HDR_METADATA_MASK:82 case ENDP_INIT_MODE:83 case ENDP_INIT_AGGR:84 case ENDP_INIT_HOL_BLOCK_EN:85 case ENDP_INIT_HOL_BLOCK_TIMER:86 case ENDP_INIT_DEAGGR:87 case ENDP_INIT_RSRC_GRP:88 case ENDP_INIT_SEQ:89 case ENDP_STATUS:90 case IPA_IRQ_STTS:91 case IPA_IRQ_EN:92 case IPA_IRQ_CLR:93 case IPA_IRQ_UC:94 case IRQ_SUSPEND_INFO:95 return true; /* These should be defined for all versions */96 97 default:98 return false;99 }100}101 102const struct reg *ipa_reg(struct ipa *ipa, enum ipa_reg_id reg_id)103{104 if (WARN(!ipa_reg_id_valid(ipa, reg_id), "invalid reg %u\n", reg_id))105 return NULL;106 107 return reg(ipa->regs, reg_id);108}109 110static const struct regs *ipa_regs(enum ipa_version version)111{112 switch (version) {113 case IPA_VERSION_3_1:114 return &ipa_regs_v3_1;115 case IPA_VERSION_3_5_1:116 return &ipa_regs_v3_5_1;117 case IPA_VERSION_4_2:118 return &ipa_regs_v4_2;119 case IPA_VERSION_4_5:120 return &ipa_regs_v4_5;121 case IPA_VERSION_4_7:122 return &ipa_regs_v4_7;123 case IPA_VERSION_4_9:124 return &ipa_regs_v4_9;125 case IPA_VERSION_4_11:126 return &ipa_regs_v4_11;127 case IPA_VERSION_5_0:128 return &ipa_regs_v5_0;129 case IPA_VERSION_5_5:130 return &ipa_regs_v5_5;131 default:132 return NULL;133 }134}135 136int ipa_reg_init(struct ipa *ipa, struct platform_device *pdev)137{138 struct device *dev = &pdev->dev;139 const struct regs *regs;140 struct resource *res;141 142 regs = ipa_regs(ipa->version);143 if (!regs)144 return -EINVAL;145 146 if (WARN_ON(regs->reg_count > IPA_REG_ID_COUNT))147 return -EINVAL;148 149 /* Setup IPA register memory */150 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "ipa-reg");151 if (!res) {152 dev_err(dev, "DT error getting \"ipa-reg\" memory property\n");153 return -ENODEV;154 }155 156 ipa->reg_virt = ioremap(res->start, resource_size(res));157 if (!ipa->reg_virt) {158 dev_err(dev, "unable to remap \"ipa-reg\" memory\n");159 return -ENOMEM;160 }161 ipa->regs = regs;162 163 return 0;164}165 166void ipa_reg_exit(struct ipa *ipa)167{168 iounmap(ipa->reg_virt);169}170