diff options
Diffstat (limited to 'drivers/net/ipa/ipa_reg.c')
| -rw-r--r-- | drivers/net/ipa/ipa_reg.c | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/drivers/net/ipa/ipa_reg.c b/drivers/net/ipa/ipa_reg.c new file mode 100644 index 0000000000..818a84f7c4 --- /dev/null +++ b/drivers/net/ipa/ipa_reg.c @@ -0,0 +1,167 @@ +// 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); +} |