// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) /* Copyright (C) 2015-2018 Netronome Systems, Inc. */ /* * nfp_nsp.c * Author: Jakub Kicinski <[email protected]> * Jason McMullan <[email protected]> */ #include <asm/unaligned.h> #include <linux/bitfield.h> #include <linux/delay.h> #include <linux/firmware.h> #include <linux/kernel.h> #include <linux/kthread.h> #include <linux/overflow.h> #include <linux/sizes.h> #include <linux/slab.h> #define NFP_SUBSYS … #include "nfp.h" #include "nfp_cpp.h" #include "nfp_nsp.h" #define NFP_NSP_TIMEOUT_DEFAULT … #define NFP_NSP_TIMEOUT_BOOT … /* Offsets relative to the CSR base */ #define NSP_STATUS … #define NSP_STATUS_MAGIC … #define NSP_STATUS_MAJOR … #define NSP_STATUS_MINOR … #define NSP_STATUS_CODE … #define NSP_STATUS_RESULT … #define NSP_STATUS_BUSY … #define NSP_COMMAND … #define NSP_COMMAND_OPTION … #define NSP_COMMAND_CODE … #define NSP_COMMAND_DMA_BUF … #define NSP_COMMAND_START … /* CPP address to retrieve the data from */ #define NSP_BUFFER … #define NSP_BUFFER_CPP … #define NSP_BUFFER_ADDRESS … #define NSP_DFLT_BUFFER … #define NSP_DFLT_BUFFER_CPP … #define NSP_DFLT_BUFFER_ADDRESS … #define NSP_DFLT_BUFFER_CONFIG … #define NSP_DFLT_BUFFER_DMA_CHUNK_ORDER … #define NSP_DFLT_BUFFER_SIZE_4KB … #define NSP_DFLT_BUFFER_SIZE_MB … #define NFP_CAP_CMD_DMA_SG … #define NSP_MAGIC … #define NSP_MAJOR … #define NSP_MINOR … #define NSP_CODE_MAJOR … #define NSP_CODE_MINOR … #define NFP_FW_LOAD_RET_MAJOR … #define NFP_FW_LOAD_RET_MINOR … #define NFP_HWINFO_LOOKUP_SIZE … #define NFP_VERSIONS_SIZE … #define NFP_VERSIONS_CNT_OFF … #define NFP_VERSIONS_BSP_OFF … #define NFP_VERSIONS_CPLD_OFF … #define NFP_VERSIONS_APP_OFF … #define NFP_VERSIONS_BUNDLE_OFF … #define NFP_VERSIONS_UNDI_OFF … #define NFP_VERSIONS_NCSI_OFF … #define NFP_VERSIONS_CFGR_OFF … #define NSP_SFF_EEPROM_BLOCK_LEN … enum nfp_nsp_cmd { … }; struct nfp_nsp_dma_buf { … }; static const struct { … } nsp_errors[] = …; struct nfp_nsp { … }; /** * struct nfp_nsp_command_arg - NFP command argument structure * @code: NFP SP Command Code * @dma: @buf points to a host buffer, not NSP buffer * @timeout_sec:Timeout value to wait for completion in seconds * @option: NFP SP Command Argument * @buf: NFP SP Buffer Address * @error_cb: Callback for interpreting option if error occurred * @error_quiet:Don't print command error/warning. Protocol errors are still * logged. */ struct nfp_nsp_command_arg { … }; /** * struct nfp_nsp_command_buf_arg - NFP command with buffer argument structure * @arg: NFP command argument structure * @in_buf: Buffer with data for input * @in_size: Size of @in_buf * @out_buf: Buffer for output data * @out_size: Size of @out_buf */ struct nfp_nsp_command_buf_arg { … }; struct nfp_cpp *nfp_nsp_cpp(struct nfp_nsp *state) { … } bool nfp_nsp_config_modified(struct nfp_nsp *state) { … } void nfp_nsp_config_set_modified(struct nfp_nsp *state, bool modified) { … } void *nfp_nsp_config_entries(struct nfp_nsp *state) { … } unsigned int nfp_nsp_config_idx(struct nfp_nsp *state) { … } void nfp_nsp_config_set_state(struct nfp_nsp *state, void *entries, unsigned int idx) { … } void nfp_nsp_config_clear_state(struct nfp_nsp *state) { … } static void nfp_nsp_print_extended_error(struct nfp_nsp *state, u32 ret_val) { … } static int nfp_nsp_check(struct nfp_nsp *state) { … } /** * nfp_nsp_open() - Prepare for communication and lock the NSP resource. * @cpp: NFP CPP Handle */ struct nfp_nsp *nfp_nsp_open(struct nfp_cpp *cpp) { … } /** * nfp_nsp_close() - Clean up and unlock the NSP resource. * @state: NFP SP state */ void nfp_nsp_close(struct nfp_nsp *state) { … } u16 nfp_nsp_get_abi_ver_major(struct nfp_nsp *state) { … } u16 nfp_nsp_get_abi_ver_minor(struct nfp_nsp *state) { … } static int nfp_nsp_wait_reg(struct nfp_cpp *cpp, u64 *reg, u32 nsp_cpp, u64 addr, u64 mask, u64 val, u32 timeout_sec) { … } /** * __nfp_nsp_command() - Execute a command on the NFP Service Processor * @state: NFP SP state * @arg: NFP command argument structure * * Return: 0 for success with no result * * positive value for NSP completion with a result code * * -EAGAIN if the NSP is not yet present * -ENODEV if the NSP is not a supported model * -EBUSY if the NSP is stuck * -EINTR if interrupted while waiting for completion * -ETIMEDOUT if the NSP took longer than @timeout_sec seconds to complete */ static int __nfp_nsp_command(struct nfp_nsp *state, const struct nfp_nsp_command_arg *arg) { … } static int nfp_nsp_command(struct nfp_nsp *state, u16 code) { … } static int nfp_nsp_command_buf_def(struct nfp_nsp *nsp, struct nfp_nsp_command_buf_arg *arg) { … } static int nfp_nsp_command_buf_dma_sg(struct nfp_nsp *nsp, struct nfp_nsp_command_buf_arg *arg, unsigned int max_size, unsigned int chunk_order, unsigned int dma_order) { … } static int nfp_nsp_command_buf_dma(struct nfp_nsp *nsp, struct nfp_nsp_command_buf_arg *arg, unsigned int max_size, unsigned int dma_order) { … } static int nfp_nsp_command_buf(struct nfp_nsp *nsp, struct nfp_nsp_command_buf_arg *arg) { … } int nfp_nsp_wait(struct nfp_nsp *state) { … } int nfp_nsp_device_soft_reset(struct nfp_nsp *state) { … } int nfp_nsp_mac_reinit(struct nfp_nsp *state) { … } static void nfp_nsp_load_fw_extended_msg(struct nfp_nsp *state, u32 ret_val) { … } int nfp_nsp_load_fw(struct nfp_nsp *state, const struct firmware *fw) { … } int nfp_nsp_write_flash(struct nfp_nsp *state, const struct firmware *fw) { … } int nfp_nsp_read_eth_table(struct nfp_nsp *state, void *buf, unsigned int size) { … } int nfp_nsp_write_eth_table(struct nfp_nsp *state, const void *buf, unsigned int size) { … } int nfp_nsp_read_identify(struct nfp_nsp *state, void *buf, unsigned int size) { … } int nfp_nsp_read_sensors(struct nfp_nsp *state, unsigned int sensor_mask, void *buf, unsigned int size) { … } int nfp_nsp_load_stored_fw(struct nfp_nsp *state) { … } static int __nfp_nsp_hwinfo_lookup(struct nfp_nsp *state, void *buf, unsigned int size, bool optional) { … } int nfp_nsp_hwinfo_lookup(struct nfp_nsp *state, void *buf, unsigned int size) { … } int nfp_nsp_hwinfo_lookup_optional(struct nfp_nsp *state, void *buf, unsigned int size, const char *default_val) { … } int nfp_nsp_hwinfo_set(struct nfp_nsp *state, void *buf, unsigned int size) { … } int nfp_nsp_fw_loaded(struct nfp_nsp *state) { … } int nfp_nsp_versions(struct nfp_nsp *state, void *buf, unsigned int size) { … } const char *nfp_nsp_versions_get(enum nfp_nsp_versions id, bool flash, const u8 *buf, unsigned int size) { … } static int __nfp_nsp_module_eeprom(struct nfp_nsp *state, void *buf, unsigned int size) { … } int nfp_nsp_read_module_eeprom(struct nfp_nsp *state, int eth_index, unsigned int offset, void *data, unsigned int len, unsigned int *read_len) { struct eeprom_buf { u8 metalen; __le16 length; __le16 offset; __le16 readlen; u8 eth_index; u8 data[]; } __packed *buf; int bufsz, ret; BUILD_BUG_ON(offsetof(struct eeprom_buf, data) % 8); /* Buffer must be large enough and rounded to the next block size. */ bufsz = struct_size(buf, data, round_up(len, NSP_SFF_EEPROM_BLOCK_LEN)); buf = kzalloc(bufsz, GFP_KERNEL); if (!buf) return -ENOMEM; buf->metalen = offsetof(struct eeprom_buf, data) / NSP_SFF_EEPROM_BLOCK_LEN; buf->length = cpu_to_le16(len); buf->offset = cpu_to_le16(offset); buf->eth_index = eth_index; ret = __nfp_nsp_module_eeprom(state, buf, bufsz); *read_len = min_t(unsigned int, len, le16_to_cpu(buf->readlen)); if (*read_len) memcpy(data, buf->data, *read_len); if (!ret && *read_len < len) ret = -EIO; kfree(buf); return ret; }; int nfp_nsp_read_media(struct nfp_nsp *state, void *buf, unsigned int size) { … }
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