Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Alex Elder | 343 | 100.00% | 3 | 100.00% |
Total | 343 | 3 |
/* SPDX-License-Identifier: GPL-2.0 */ /* Copyright (c) 2012-2018, The Linux Foundation. All rights reserved. * Copyright (C) 2019-2020 Linaro Ltd. */ #ifndef _IPA_CMD_H_ #define _IPA_CMD_H_ #include <linux/types.h> #include <linux/dma-direction.h> struct sk_buff; struct scatterlist; struct ipa; struct ipa_mem; struct gsi_trans; struct gsi_channel; /** * enum ipa_cmd_opcode: IPA immediate commands * * All immediate commands are issued using the AP command TX endpoint. * The numeric values here are the opcodes for IPA v3.5.1 hardware. * * IPA_CMD_NONE is a special (invalid) value that's used to indicate * a request is *not* an immediate command. */ enum ipa_cmd_opcode { IPA_CMD_NONE = 0, IPA_CMD_IP_V4_FILTER_INIT = 3, IPA_CMD_IP_V6_FILTER_INIT = 4, IPA_CMD_IP_V4_ROUTING_INIT = 7, IPA_CMD_IP_V6_ROUTING_INIT = 8, IPA_CMD_HDR_INIT_LOCAL = 9, IPA_CMD_REGISTER_WRITE = 12, IPA_CMD_IP_PACKET_INIT = 16, IPA_CMD_DMA_SHARED_MEM = 19, IPA_CMD_IP_PACKET_TAG_STATUS = 20, }; /** * struct ipa_cmd_info - information needed for an IPA immediate command * * @opcode: The command opcode. * @direction: Direction of data transfer for DMA commands */ struct ipa_cmd_info { enum ipa_cmd_opcode opcode; enum dma_data_direction direction; }; #ifdef IPA_VALIDATE /** * ipa_cmd_table_valid() - Validate a memory region holding a table * @ipa: - IPA pointer * @mem: - IPA memory region descriptor * @route: - Whether the region holds a route or filter table * @ipv6: - Whether the table is for IPv6 or IPv4 * @hashed: - Whether the table is hashed or non-hashed * * Return: true if region is valid, false otherwise */ bool ipa_cmd_table_valid(struct ipa *ipa, const struct ipa_mem *mem, bool route, bool ipv6, bool hashed); /** * ipa_cmd_data_valid() - Validate command-realted configuration is valid * @ipa: - IPA pointer * * Return: true if assumptions required for command are valid */ bool ipa_cmd_data_valid(struct ipa *ipa); #else /* !IPA_VALIDATE */ static inline bool ipa_cmd_table_valid(struct ipa *ipa, const struct ipa_mem *mem, bool route, bool ipv6, bool hashed) { return true; } static inline bool ipa_cmd_data_valid(struct ipa *ipa) { return true; } #endif /* !IPA_VALIDATE */ /** * ipa_cmd_pool_init() - initialize command channel pools * @channel: AP->IPA command TX GSI channel pointer * @tre_count: Number of pool elements to allocate * * Return: 0 if successful, or a negative error code */ int ipa_cmd_pool_init(struct gsi_channel *gsi_channel, u32 tre_count); /** * ipa_cmd_pool_exit() - Inverse of ipa_cmd_pool_init() * @channel: AP->IPA command TX GSI channel pointer */ void ipa_cmd_pool_exit(struct gsi_channel *channel); /** * ipa_cmd_table_init_add() - Add table init command to a transaction * @trans: GSI transaction * @opcode: IPA immediate command opcode * @size: Size of non-hashed routing table memory * @offset: Offset in IPA shared memory of non-hashed routing table memory * @addr: DMA address of non-hashed table data to write * @hash_size: Size of hashed routing table memory * @hash_offset: Offset in IPA shared memory of hashed routing table memory * @hash_addr: DMA address of hashed table data to write * * If hash_size is 0, hash_offset and hash_addr are ignored. */ void ipa_cmd_table_init_add(struct gsi_trans *trans, enum ipa_cmd_opcode opcode, u16 size, u32 offset, dma_addr_t addr, u16 hash_size, u32 hash_offset, dma_addr_t hash_addr); /** * ipa_cmd_hdr_init_local_add() - Add a header init command to a transaction * @ipa: IPA structure * @offset: Offset of header memory in IPA local space * @size: Size of header memory * @addr: DMA address of buffer to be written from * * Defines and fills the location in IPA memory to use for headers. */ void ipa_cmd_hdr_init_local_add(struct gsi_trans *trans, u32 offset, u16 size, dma_addr_t addr); /** * ipa_cmd_register_write_add() - Add a register write command to a transaction * @trans: GSI transaction * @offset: Offset of register to be written * @value: Value to be written * @mask: Mask of bits in register to update with bits from value * @clear_full: Pipeline clear option; true means full pipeline clear */ void ipa_cmd_register_write_add(struct gsi_trans *trans, u32 offset, u32 value, u32 mask, bool clear_full); /** * ipa_cmd_dma_shared_mem_add() - Add a DMA memory command to a transaction * @trans: GSI transaction * @offset: Offset of IPA memory to be read or written * @size: Number of bytes of memory to be transferred * @addr: DMA address of buffer to be read into or written from * @toward_ipa: true means write to IPA memory; false means read */ void ipa_cmd_dma_shared_mem_add(struct gsi_trans *trans, u32 offset, u16 size, dma_addr_t addr, bool toward_ipa); /** * ipa_cmd_tag_process_add() - Add IPA tag process commands to a transaction * @trans: GSI transaction */ void ipa_cmd_tag_process_add(struct gsi_trans *trans); /** * ipa_cmd_tag_process_add_count() - Number of commands in a tag process * * Return: The number of elements to allocate in a transaction * to hold tag process commands */ u32 ipa_cmd_tag_process_count(void); /** * ipa_cmd_tag_process() - Perform a tag process * * @Return: The number of elements to allocate in a transaction * to hold tag process commands */ void ipa_cmd_tag_process(struct ipa *ipa); /** * ipa_cmd_trans_alloc() - Allocate a transaction for the command TX endpoint * @ipa: IPA pointer * @tre_count: Number of elements in the transaction * * Return: A GSI transaction structure, or a null pointer if all * available transactions are in use */ struct gsi_trans *ipa_cmd_trans_alloc(struct ipa *ipa, u32 tre_count); #endif /* _IPA_CMD_H_ */
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