diff options
Diffstat (limited to 'drivers/net/nfp/nfpcore/nfp_mip.c')
-rw-r--r-- | drivers/net/nfp/nfpcore/nfp_mip.c | 154 |
1 files changed, 154 insertions, 0 deletions
diff --git a/drivers/net/nfp/nfpcore/nfp_mip.c b/drivers/net/nfp/nfpcore/nfp_mip.c new file mode 100644 index 00000000..c86966df --- /dev/null +++ b/drivers/net/nfp/nfpcore/nfp_mip.c @@ -0,0 +1,154 @@ +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright(c) 2018 Netronome Systems, Inc. + * All rights reserved. + */ + +#include <stdio.h> +#include <rte_byteorder.h> + +#include "nfp_cpp.h" +#include "nfp_mip.h" +#include "nfp_nffw.h" + +#define NFP_MIP_SIGNATURE rte_cpu_to_le_32(0x0050494d) /* "MIP\0" */ +#define NFP_MIP_VERSION rte_cpu_to_le_32(1) +#define NFP_MIP_MAX_OFFSET (256 * 1024) + +struct nfp_mip { + uint32_t signature; + uint32_t mip_version; + uint32_t mip_size; + uint32_t first_entry; + + uint32_t version; + uint32_t buildnum; + uint32_t buildtime; + uint32_t loadtime; + + uint32_t symtab_addr; + uint32_t symtab_size; + uint32_t strtab_addr; + uint32_t strtab_size; + + char name[16]; + char toolchain[32]; +}; + +/* Read memory and check if it could be a valid MIP */ +static int +nfp_mip_try_read(struct nfp_cpp *cpp, uint32_t cpp_id, uint64_t addr, + struct nfp_mip *mip) +{ + int ret; + + ret = nfp_cpp_read(cpp, cpp_id, addr, mip, sizeof(*mip)); + if (ret != sizeof(*mip)) { + printf("Failed to read MIP data (%d, %zu)\n", + ret, sizeof(*mip)); + return -EIO; + } + if (mip->signature != NFP_MIP_SIGNATURE) { + printf("Incorrect MIP signature (0x%08x)\n", + rte_le_to_cpu_32(mip->signature)); + return -EINVAL; + } + if (mip->mip_version != NFP_MIP_VERSION) { + printf("Unsupported MIP version (%d)\n", + rte_le_to_cpu_32(mip->mip_version)); + return -EINVAL; + } + + return 0; +} + +/* Try to locate MIP using the resource table */ +static int +nfp_mip_read_resource(struct nfp_cpp *cpp, struct nfp_mip *mip) +{ + struct nfp_nffw_info *nffw_info; + uint32_t cpp_id; + uint64_t addr; + int err; + + nffw_info = nfp_nffw_info_open(cpp); + if (!nffw_info) + return -ENODEV; + + err = nfp_nffw_info_mip_first(nffw_info, &cpp_id, &addr); + if (err) + goto exit_close_nffw; + + err = nfp_mip_try_read(cpp, cpp_id, addr, mip); +exit_close_nffw: + nfp_nffw_info_close(nffw_info); + return err; +} + +/* + * nfp_mip_open() - Get device MIP structure + * @cpp: NFP CPP Handle + * + * Copy MIP structure from NFP device and return it. The returned + * structure is handled internally by the library and should be + * freed by calling nfp_mip_close(). + * + * Return: pointer to mip, NULL on failure. + */ +struct nfp_mip * +nfp_mip_open(struct nfp_cpp *cpp) +{ + struct nfp_mip *mip; + int err; + + mip = malloc(sizeof(*mip)); + if (!mip) + return NULL; + + err = nfp_mip_read_resource(cpp, mip); + if (err) { + free(mip); + return NULL; + } + + mip->name[sizeof(mip->name) - 1] = 0; + + return mip; +} + +void +nfp_mip_close(struct nfp_mip *mip) +{ + free(mip); +} + +const char * +nfp_mip_name(const struct nfp_mip *mip) +{ + return mip->name; +} + +/* + * nfp_mip_symtab() - Get the address and size of the MIP symbol table + * @mip: MIP handle + * @addr: Location for NFP DDR address of MIP symbol table + * @size: Location for size of MIP symbol table + */ +void +nfp_mip_symtab(const struct nfp_mip *mip, uint32_t *addr, uint32_t *size) +{ + *addr = rte_le_to_cpu_32(mip->symtab_addr); + *size = rte_le_to_cpu_32(mip->symtab_size); +} + +/* + * nfp_mip_strtab() - Get the address and size of the MIP symbol name table + * @mip: MIP handle + * @addr: Location for NFP DDR address of MIP symbol name table + * @size: Location for size of MIP symbol name table + */ +void +nfp_mip_strtab(const struct nfp_mip *mip, uint32_t *addr, uint32_t *size) +{ + *addr = rte_le_to_cpu_32(mip->strtab_addr); + *size = rte_le_to_cpu_32(mip->strtab_size); +} |