422 lines
14 KiB
C
422 lines
14 KiB
C
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/* SPDX-License-Identifier: GPL-2.0 */
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/* Copyright (c) 2015-2018, The Linux Foundation. All rights reserved.
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* Copyright (C) 2018-2022 Linaro Ltd.
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*/
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#ifndef _GSI_REG_H_
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#define _GSI_REG_H_
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/* === Only "gsi.c" should include this file === */
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#include <linux/bits.h>
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/**
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* DOC: GSI Registers
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*
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* GSI registers are located within the "gsi" address space defined by Device
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* Tree. The offset of each register within that space is specified by
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* symbols defined below. The GSI address space is mapped to virtual memory
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* space in gsi_init(). All GSI registers are 32 bits wide.
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*
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* Each register type is duplicated for a number of instances of something.
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* For example, each GSI channel has its own set of registers defining its
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* configuration. The offset to a channel's set of registers is computed
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* based on a "base" offset plus an additional "stride" amount computed
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* from the channel's ID. For such registers, the offset is computed by a
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* function-like macro that takes a parameter used in the computation.
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*
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* The offset of a register dependent on execution environment is computed
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* by a macro that is supplied a parameter "ee". The "ee" value is a member
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* of the gsi_ee_id enumerated type.
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*
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* The offset of a channel register is computed by a macro that is supplied a
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* parameter "ch". The "ch" value is a channel id whose maximum value is 30
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* (though the actual limit is hardware-dependent).
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*
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* The offset of an event register is computed by a macro that is supplied a
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* parameter "ev". The "ev" value is an event id whose maximum value is 15
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* (though the actual limit is hardware-dependent).
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*/
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/* GSI EE registers as a group are shifted downward by a fixed constant amount
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* for IPA versions 4.5 and beyond. This applies to all GSI registers we use
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* *except* the ones that disable inter-EE interrupts for channels and event
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* channels.
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*
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* The "raw" (not adjusted) GSI register range is mapped, and a pointer to
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* the mapped range is held in gsi->virt_raw. The inter-EE interrupt
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* registers are accessed using that pointer.
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*
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* Most registers are accessed using gsi->virt, which is a copy of the "raw"
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* pointer, adjusted downward by the fixed amount.
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*/
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#define GSI_EE_REG_ADJUST 0x0000d000 /* IPA v4.5+ */
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/* The inter-EE IRQ registers are relative to gsi->virt_raw (IPA v3.5+) */
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#define GSI_INTER_EE_SRC_CH_IRQ_MSK_OFFSET \
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(0x0000c020 + 0x1000 * GSI_EE_AP)
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#define GSI_INTER_EE_SRC_EV_CH_IRQ_MSK_OFFSET \
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(0x0000c024 + 0x1000 * GSI_EE_AP)
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/* All other register offsets are relative to gsi->virt */
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/** enum gsi_channel_type - CHTYPE_PROTOCOL field values in CH_C_CNTXT_0 */
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enum gsi_channel_type {
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GSI_CHANNEL_TYPE_MHI = 0x0,
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GSI_CHANNEL_TYPE_XHCI = 0x1,
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GSI_CHANNEL_TYPE_GPI = 0x2,
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GSI_CHANNEL_TYPE_XDCI = 0x3,
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GSI_CHANNEL_TYPE_WDI2 = 0x4,
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GSI_CHANNEL_TYPE_GCI = 0x5,
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GSI_CHANNEL_TYPE_WDI3 = 0x6,
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GSI_CHANNEL_TYPE_MHIP = 0x7,
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GSI_CHANNEL_TYPE_AQC = 0x8,
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GSI_CHANNEL_TYPE_11AD = 0x9,
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};
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#define GSI_CH_C_CNTXT_0_OFFSET(ch) \
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(0x0001c000 + 0x4000 * GSI_EE_AP + 0x80 * (ch))
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#define CHTYPE_PROTOCOL_FMASK GENMASK(2, 0)
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#define CHTYPE_DIR_FMASK GENMASK(3, 3)
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#define EE_FMASK GENMASK(7, 4)
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#define CHID_FMASK GENMASK(12, 8)
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/* The next field is present for IPA v4.5 and above */
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#define CHTYPE_PROTOCOL_MSB_FMASK GENMASK(13, 13)
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#define ERINDEX_FMASK GENMASK(18, 14)
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#define CHSTATE_FMASK GENMASK(23, 20)
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#define ELEMENT_SIZE_FMASK GENMASK(31, 24)
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/* Encoded value for CH_C_CNTXT_0 register channel protocol fields */
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static inline u32
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chtype_protocol_encoded(enum ipa_version version, enum gsi_channel_type type)
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{
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u32 val;
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val = u32_encode_bits(type, CHTYPE_PROTOCOL_FMASK);
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if (version < IPA_VERSION_4_5)
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return val;
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/* Encode upper bit(s) as well */
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type >>= hweight32(CHTYPE_PROTOCOL_FMASK);
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val |= u32_encode_bits(type, CHTYPE_PROTOCOL_MSB_FMASK);
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return val;
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}
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#define GSI_CH_C_CNTXT_1_OFFSET(ch) \
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(0x0001c004 + 0x4000 * GSI_EE_AP + 0x80 * (ch))
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/* Encoded value for CH_C_CNTXT_1 register R_LENGTH field */
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static inline u32 r_length_encoded(enum ipa_version version, u32 length)
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{
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if (version < IPA_VERSION_4_9)
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return u32_encode_bits(length, GENMASK(15, 0));
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return u32_encode_bits(length, GENMASK(19, 0));
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}
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#define GSI_CH_C_CNTXT_2_OFFSET(ch) \
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(0x0001c008 + 0x4000 * GSI_EE_AP + 0x80 * (ch))
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#define GSI_CH_C_CNTXT_3_OFFSET(ch) \
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(0x0001c00c + 0x4000 * GSI_EE_AP + 0x80 * (ch))
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#define GSI_CH_C_QOS_OFFSET(ch) \
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(0x0001c05c + 0x4000 * GSI_EE_AP + 0x80 * (ch))
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#define WRR_WEIGHT_FMASK GENMASK(3, 0)
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#define MAX_PREFETCH_FMASK GENMASK(8, 8)
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#define USE_DB_ENG_FMASK GENMASK(9, 9)
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/* The next field is only present for IPA v4.0, v4.1, and v4.2 */
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#define USE_ESCAPE_BUF_ONLY_FMASK GENMASK(10, 10)
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/* The next two fields are present for IPA v4.5 and above */
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#define PREFETCH_MODE_FMASK GENMASK(13, 10)
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#define EMPTY_LVL_THRSHOLD_FMASK GENMASK(23, 16)
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/* The next field is present for IPA v4.9 and above */
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#define DB_IN_BYTES GENMASK(24, 24)
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/** enum gsi_prefetch_mode - PREFETCH_MODE field in CH_C_QOS */
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enum gsi_prefetch_mode {
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GSI_USE_PREFETCH_BUFS = 0x0,
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GSI_ESCAPE_BUF_ONLY = 0x1,
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GSI_SMART_PREFETCH = 0x2,
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GSI_FREE_PREFETCH = 0x3,
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};
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#define GSI_CH_C_SCRATCH_0_OFFSET(ch) \
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(0x0001c060 + 0x4000 * GSI_EE_AP + 0x80 * (ch))
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#define GSI_CH_C_SCRATCH_1_OFFSET(ch) \
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(0x0001c064 + 0x4000 * GSI_EE_AP + 0x80 * (ch))
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#define GSI_CH_C_SCRATCH_2_OFFSET(ch) \
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(0x0001c068 + 0x4000 * GSI_EE_AP + 0x80 * (ch))
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#define GSI_CH_C_SCRATCH_3_OFFSET(ch) \
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(0x0001c06c + 0x4000 * GSI_EE_AP + 0x80 * (ch))
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#define GSI_EV_CH_E_CNTXT_0_OFFSET(ev) \
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(0x0001d000 + 0x4000 * GSI_EE_AP + 0x80 * (ev))
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/* enum gsi_channel_type defines EV_CHTYPE field values in EV_CH_E_CNTXT_0 */
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#define EV_CHTYPE_FMASK GENMASK(3, 0)
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#define EV_EE_FMASK GENMASK(7, 4)
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#define EV_EVCHID_FMASK GENMASK(15, 8)
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#define EV_INTYPE_FMASK GENMASK(16, 16)
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#define EV_CHSTATE_FMASK GENMASK(23, 20)
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#define EV_ELEMENT_SIZE_FMASK GENMASK(31, 24)
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#define GSI_EV_CH_E_CNTXT_1_OFFSET(ev) \
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(0x0001d004 + 0x4000 * GSI_EE_AP + 0x80 * (ev))
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/* Encoded value for EV_CH_C_CNTXT_1 register EV_R_LENGTH field */
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static inline u32 ev_r_length_encoded(enum ipa_version version, u32 length)
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{
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if (version < IPA_VERSION_4_9)
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return u32_encode_bits(length, GENMASK(15, 0));
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return u32_encode_bits(length, GENMASK(19, 0));
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}
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#define GSI_EV_CH_E_CNTXT_2_OFFSET(ev) \
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(0x0001d008 + 0x4000 * GSI_EE_AP + 0x80 * (ev))
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#define GSI_EV_CH_E_CNTXT_3_OFFSET(ev) \
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(0x0001d00c + 0x4000 * GSI_EE_AP + 0x80 * (ev))
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#define GSI_EV_CH_E_CNTXT_4_OFFSET(ev) \
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(0x0001d010 + 0x4000 * GSI_EE_AP + 0x80 * (ev))
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#define GSI_EV_CH_E_CNTXT_8_OFFSET(ev) \
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(0x0001d020 + 0x4000 * GSI_EE_AP + 0x80 * (ev))
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#define MODT_FMASK GENMASK(15, 0)
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#define MODC_FMASK GENMASK(23, 16)
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#define MOD_CNT_FMASK GENMASK(31, 24)
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#define GSI_EV_CH_E_CNTXT_9_OFFSET(ev) \
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(0x0001d024 + 0x4000 * GSI_EE_AP + 0x80 * (ev))
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#define GSI_EV_CH_E_CNTXT_10_OFFSET(ev) \
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(0x0001d028 + 0x4000 * GSI_EE_AP + 0x80 * (ev))
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#define GSI_EV_CH_E_CNTXT_11_OFFSET(ev) \
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(0x0001d02c + 0x4000 * GSI_EE_AP + 0x80 * (ev))
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#define GSI_EV_CH_E_CNTXT_12_OFFSET(ev) \
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(0x0001d030 + 0x4000 * GSI_EE_AP + 0x80 * (ev))
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#define GSI_EV_CH_E_CNTXT_13_OFFSET(ev) \
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(0x0001d034 + 0x4000 * GSI_EE_AP + 0x80 * (ev))
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#define GSI_EV_CH_E_SCRATCH_0_OFFSET(ev) \
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(0x0001d048 + 0x4000 * GSI_EE_AP + 0x80 * (ev))
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#define GSI_EV_CH_E_SCRATCH_1_OFFSET(ev) \
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(0x0001d04c + 0x4000 * GSI_EE_AP + 0x80 * (ev))
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#define GSI_CH_C_DOORBELL_0_OFFSET(ch) \
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(0x0001e000 + 0x4000 * GSI_EE_AP + 0x08 * (ch))
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#define GSI_EV_CH_E_DOORBELL_0_OFFSET(ev) \
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(0x0001e100 + 0x4000 * GSI_EE_AP + 0x08 * (ev))
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#define GSI_GSI_STATUS_OFFSET \
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(0x0001f000 + 0x4000 * GSI_EE_AP)
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#define ENABLED_FMASK GENMASK(0, 0)
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#define GSI_CH_CMD_OFFSET \
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(0x0001f008 + 0x4000 * GSI_EE_AP)
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#define CH_CHID_FMASK GENMASK(7, 0)
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#define CH_OPCODE_FMASK GENMASK(31, 24)
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/** enum gsi_ch_cmd_opcode - CH_OPCODE field values in CH_CMD */
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enum gsi_ch_cmd_opcode {
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GSI_CH_ALLOCATE = 0x0,
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GSI_CH_START = 0x1,
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GSI_CH_STOP = 0x2,
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GSI_CH_RESET = 0x9,
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GSI_CH_DE_ALLOC = 0xa,
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GSI_CH_DB_STOP = 0xb,
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};
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#define GSI_EV_CH_CMD_OFFSET \
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(0x0001f010 + 0x4000 * GSI_EE_AP)
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#define EV_CHID_FMASK GENMASK(7, 0)
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#define EV_OPCODE_FMASK GENMASK(31, 24)
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/** enum gsi_evt_cmd_opcode - EV_OPCODE field values in EV_CH_CMD */
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enum gsi_evt_cmd_opcode {
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GSI_EVT_ALLOCATE = 0x0,
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GSI_EVT_RESET = 0x9,
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GSI_EVT_DE_ALLOC = 0xa,
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};
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#define GSI_GENERIC_CMD_OFFSET \
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(0x0001f018 + 0x4000 * GSI_EE_AP)
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#define GENERIC_OPCODE_FMASK GENMASK(4, 0)
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#define GENERIC_CHID_FMASK GENMASK(9, 5)
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#define GENERIC_EE_FMASK GENMASK(13, 10)
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#define GENERIC_PARAMS_FMASK GENMASK(31, 24) /* IPA v4.11+ */
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/** enum gsi_generic_cmd_opcode - GENERIC_OPCODE field values in GENERIC_CMD */
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enum gsi_generic_cmd_opcode {
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GSI_GENERIC_HALT_CHANNEL = 0x1,
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GSI_GENERIC_ALLOCATE_CHANNEL = 0x2,
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GSI_GENERIC_ENABLE_FLOW_CONTROL = 0x3, /* IPA v4.2+ */
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GSI_GENERIC_DISABLE_FLOW_CONTROL = 0x4, /* IPA v4.2+ */
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GSI_GENERIC_QUERY_FLOW_CONTROL = 0x5, /* IPA v4.11+ */
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};
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/* The next register is present for IPA v3.5.1 and above */
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#define GSI_GSI_HW_PARAM_2_OFFSET \
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(0x0001f040 + 0x4000 * GSI_EE_AP)
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#define IRAM_SIZE_FMASK GENMASK(2, 0)
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#define NUM_CH_PER_EE_FMASK GENMASK(7, 3)
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#define NUM_EV_PER_EE_FMASK GENMASK(12, 8)
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#define GSI_CH_PEND_TRANSLATE_FMASK GENMASK(13, 13)
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#define GSI_CH_FULL_LOGIC_FMASK GENMASK(14, 14)
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/* Fields below are present for IPA v4.0 and above */
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#define GSI_USE_SDMA_FMASK GENMASK(15, 15)
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#define GSI_SDMA_N_INT_FMASK GENMASK(18, 16)
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#define GSI_SDMA_MAX_BURST_FMASK GENMASK(26, 19)
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#define GSI_SDMA_N_IOVEC_FMASK GENMASK(29, 27)
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/* Fields below are present for IPA v4.2 and above */
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#define GSI_USE_RD_WR_ENG_FMASK GENMASK(30, 30)
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#define GSI_USE_INTER_EE_FMASK GENMASK(31, 31)
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/** enum gsi_iram_size - IRAM_SIZE field values in HW_PARAM_2 */
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enum gsi_iram_size {
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IRAM_SIZE_ONE_KB = 0x0,
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IRAM_SIZE_TWO_KB = 0x1,
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/* The next two values are available for IPA v4.0 and above */
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IRAM_SIZE_TWO_N_HALF_KB = 0x2,
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IRAM_SIZE_THREE_KB = 0x3,
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/* The next two values are available for IPA v4.5 and above */
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IRAM_SIZE_THREE_N_HALF_KB = 0x4,
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IRAM_SIZE_FOUR_KB = 0x5,
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};
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/* IRQ condition for each type is cleared by writing type-specific register */
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#define GSI_CNTXT_TYPE_IRQ_OFFSET \
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(0x0001f080 + 0x4000 * GSI_EE_AP)
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#define GSI_CNTXT_TYPE_IRQ_MSK_OFFSET \
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(0x0001f088 + 0x4000 * GSI_EE_AP)
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/* Values here are bit positions in the TYPE_IRQ and TYPE_IRQ_MSK registers */
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enum gsi_irq_type_id {
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GSI_CH_CTRL = 0x0, /* channel allocation, etc. */
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GSI_EV_CTRL = 0x1, /* event ring allocation, etc. */
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GSI_GLOB_EE = 0x2, /* global/general event */
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GSI_IEOB = 0x3, /* TRE completion */
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GSI_INTER_EE_CH_CTRL = 0x4, /* remote-issued stop/reset (unused) */
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GSI_INTER_EE_EV_CTRL = 0x5, /* remote-issued event reset (unused) */
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GSI_GENERAL = 0x6, /* general-purpose event */
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};
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#define GSI_CNTXT_SRC_CH_IRQ_OFFSET \
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(0x0001f090 + 0x4000 * GSI_EE_AP)
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#define GSI_CNTXT_SRC_EV_CH_IRQ_OFFSET \
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(0x0001f094 + 0x4000 * GSI_EE_AP)
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#define GSI_CNTXT_SRC_CH_IRQ_MSK_OFFSET \
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(0x0001f098 + 0x4000 * GSI_EE_AP)
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#define GSI_CNTXT_SRC_EV_CH_IRQ_MSK_OFFSET \
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(0x0001f09c + 0x4000 * GSI_EE_AP)
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#define GSI_CNTXT_SRC_CH_IRQ_CLR_OFFSET \
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(0x0001f0a0 + 0x4000 * GSI_EE_AP)
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#define GSI_CNTXT_SRC_EV_CH_IRQ_CLR_OFFSET \
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(0x0001f0a4 + 0x4000 * GSI_EE_AP)
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#define GSI_CNTXT_SRC_IEOB_IRQ_OFFSET \
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(0x0001f0b0 + 0x4000 * GSI_EE_AP)
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#define GSI_CNTXT_SRC_IEOB_IRQ_MSK_OFFSET \
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(0x0001f0b8 + 0x4000 * GSI_EE_AP)
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#define GSI_CNTXT_SRC_IEOB_IRQ_CLR_OFFSET \
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(0x0001f0c0 + 0x4000 * GSI_EE_AP)
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#define GSI_CNTXT_GLOB_IRQ_STTS_OFFSET \
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(0x0001f100 + 0x4000 * GSI_EE_AP)
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#define GSI_CNTXT_GLOB_IRQ_EN_OFFSET \
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(0x0001f108 + 0x4000 * GSI_EE_AP)
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#define GSI_CNTXT_GLOB_IRQ_CLR_OFFSET \
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(0x0001f110 + 0x4000 * GSI_EE_AP)
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/* Values here are bit positions in the GLOB_IRQ_* registers */
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enum gsi_global_irq_id {
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ERROR_INT = 0x0,
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GP_INT1 = 0x1,
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GP_INT2 = 0x2,
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GP_INT3 = 0x3,
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};
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#define GSI_CNTXT_GSI_IRQ_STTS_OFFSET \
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(0x0001f118 + 0x4000 * GSI_EE_AP)
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#define GSI_CNTXT_GSI_IRQ_EN_OFFSET \
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(0x0001f120 + 0x4000 * GSI_EE_AP)
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#define GSI_CNTXT_GSI_IRQ_CLR_OFFSET \
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(0x0001f128 + 0x4000 * GSI_EE_AP)
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/* Values here are bit positions in the (general) GSI_IRQ_* registers */
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||
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enum gsi_general_id {
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||
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BREAK_POINT = 0x0,
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||
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BUS_ERROR = 0x1,
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||
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CMD_FIFO_OVRFLOW = 0x2,
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||
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MCS_STACK_OVRFLOW = 0x3,
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||
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|
};
|
||
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#define GSI_CNTXT_INTSET_OFFSET \
|
||
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(0x0001f180 + 0x4000 * GSI_EE_AP)
|
||
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|
#define INTYPE_FMASK GENMASK(0, 0)
|
||
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||
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#define GSI_ERROR_LOG_OFFSET \
|
||
|
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(0x0001f200 + 0x4000 * GSI_EE_AP)
|
||
|
|
|
||
|
|
#define ERR_ARG3_FMASK GENMASK(3, 0)
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#define ERR_ARG2_FMASK GENMASK(7, 4)
|
||
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|
#define ERR_ARG1_FMASK GENMASK(11, 8)
|
||
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|
#define ERR_CODE_FMASK GENMASK(15, 12)
|
||
|
|
#define ERR_VIRT_IDX_FMASK GENMASK(23, 19)
|
||
|
|
#define ERR_TYPE_FMASK GENMASK(27, 24)
|
||
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|
#define ERR_EE_FMASK GENMASK(31, 28)
|
||
|
|
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||
|
|
/** enum gsi_err_code - ERR_CODE field values in EE_ERR_LOG */
|
||
|
|
enum gsi_err_code {
|
||
|
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GSI_INVALID_TRE = 0x1,
|
||
|
|
GSI_OUT_OF_BUFFERS = 0x2,
|
||
|
|
GSI_OUT_OF_RESOURCES = 0x3,
|
||
|
|
GSI_UNSUPPORTED_INTER_EE_OP = 0x4,
|
||
|
|
GSI_EVT_RING_EMPTY = 0x5,
|
||
|
|
GSI_NON_ALLOCATED_EVT_ACCESS = 0x6,
|
||
|
|
/* 7 is not assigned */
|
||
|
|
GSI_HWO_1 = 0x8,
|
||
|
|
};
|
||
|
|
|
||
|
|
/** enum gsi_err_type - ERR_TYPE field values in EE_ERR_LOG */
|
||
|
|
enum gsi_err_type {
|
||
|
|
GSI_ERR_TYPE_GLOB = 0x1,
|
||
|
|
GSI_ERR_TYPE_CHAN = 0x2,
|
||
|
|
GSI_ERR_TYPE_EVT = 0x3,
|
||
|
|
};
|
||
|
|
|
||
|
|
#define GSI_ERROR_LOG_CLR_OFFSET \
|
||
|
|
(0x0001f210 + 0x4000 * GSI_EE_AP)
|
||
|
|
|
||
|
|
#define GSI_CNTXT_SCRATCH_0_OFFSET \
|
||
|
|
(0x0001f400 + 0x4000 * GSI_EE_AP)
|
||
|
|
#define INTER_EE_RESULT_FMASK GENMASK(2, 0)
|
||
|
|
#define GENERIC_EE_RESULT_FMASK GENMASK(7, 5)
|
||
|
|
|
||
|
|
/** enum gsi_generic_ee_result - GENERIC_EE_RESULT field values in SCRATCH_0 */
|
||
|
|
enum gsi_generic_ee_result {
|
||
|
|
GENERIC_EE_SUCCESS = 0x1,
|
||
|
|
GENERIC_EE_INCORRECT_CHANNEL_STATE = 0x2,
|
||
|
|
GENERIC_EE_INCORRECT_DIRECTION = 0x3,
|
||
|
|
GENERIC_EE_INCORRECT_CHANNEL_TYPE = 0x4,
|
||
|
|
GENERIC_EE_INCORRECT_CHANNEL = 0x5,
|
||
|
|
GENERIC_EE_RETRY = 0x6,
|
||
|
|
GENERIC_EE_NO_RESOURCES = 0x7,
|
||
|
|
};
|
||
|
|
|
||
|
|
#endif /* _GSI_REG_H_ */
|