From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- drivers/net/ipa/ipa_reg.c | 133 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 133 insertions(+) create mode 100644 drivers/net/ipa/ipa_reg.c (limited to 'drivers/net/ipa/ipa_reg.c') diff --git a/drivers/net/ipa/ipa_reg.c b/drivers/net/ipa/ipa_reg.c new file mode 100644 index 000000000..22f067741 --- /dev/null +++ b/drivers/net/ipa/ipa_reg.c @@ -0,0 +1,133 @@ +// SPDX-License-Identifier: GPL-2.0 + +/* Copyright (c) 2012-2018, The Linux Foundation. All rights reserved. + * Copyright (C) 2019-2022 Linaro Ltd. + */ + +#include + +#include "ipa.h" +#include "ipa_reg.h" + +/* Is this register valid and defined for the current IPA version? */ +static bool ipa_reg_valid(struct ipa *ipa, enum ipa_reg_id reg_id) +{ + enum ipa_version version = ipa->version; + bool valid; + + /* Check for bogus (out of range) register IDs */ + if ((u32)reg_id >= ipa->regs->reg_count) + return false; + + switch (reg_id) { + case IPA_BCR: + case COUNTER_CFG: + valid = version < IPA_VERSION_4_5; + break; + + case IPA_TX_CFG: + case FLAVOR_0: + case IDLE_INDICATION_CFG: + valid = version >= IPA_VERSION_3_5; + break; + + case QTIME_TIMESTAMP_CFG: + case TIMERS_XO_CLK_DIV_CFG: + case TIMERS_PULSE_GRAN_CFG: + valid = version >= IPA_VERSION_4_5; + break; + + case SRC_RSRC_GRP_45_RSRC_TYPE: + case DST_RSRC_GRP_45_RSRC_TYPE: + valid = version <= IPA_VERSION_3_1 || + version == IPA_VERSION_4_5; + break; + + case SRC_RSRC_GRP_67_RSRC_TYPE: + case DST_RSRC_GRP_67_RSRC_TYPE: + valid = version <= IPA_VERSION_3_1; + break; + + case ENDP_FILTER_ROUTER_HSH_CFG: + valid = version != IPA_VERSION_4_2; + break; + + case IRQ_SUSPEND_EN: + case IRQ_SUSPEND_CLR: + valid = version >= IPA_VERSION_3_1; + break; + + default: + valid = true; /* Others should be defined for all versions */ + break; + } + + /* To be valid, it must be defined */ + + return valid && ipa->regs->reg[reg_id]; +} + +const struct ipa_reg *ipa_reg(struct ipa *ipa, enum ipa_reg_id reg_id) +{ + if (WARN_ON(!ipa_reg_valid(ipa, reg_id))) + return NULL; + + return ipa->regs->reg[reg_id]; +} + +static const struct ipa_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_9: + return &ipa_regs_v4_9; + case IPA_VERSION_4_11: + return &ipa_regs_v4_11; + default: + return NULL; + } +} + +int ipa_reg_init(struct ipa *ipa) +{ + struct device *dev = &ipa->pdev->dev; + const struct ipa_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->reg_addr = res->start; + ipa->regs = regs; + + return 0; +} + +void ipa_reg_exit(struct ipa *ipa) +{ + iounmap(ipa->reg_virt); +} -- cgit v1.2.3