// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
/* Copyright (C) 2017-2018 Netronome Systems, Inc. */
#include <linux/ethtool.h>
#include <linux/vmalloc.h>
#include "nfp_asm.h"
#include "nfp_main.h"
#include "nfpcore/nfp.h"
#include "nfpcore/nfp_nffw.h"
#include "nfpcore/nfp6000/nfp6000.h"
#define NFP_DUMP_SPEC_RTSYM "_abi_dump_spec"
#define ALIGN8(x) ALIGN(x, 8)
enum nfp_dumpspec_type {
NFP_DUMPSPEC_TYPE_CPP_CSR = 0,
NFP_DUMPSPEC_TYPE_XPB_CSR = 1,
NFP_DUMPSPEC_TYPE_ME_CSR = 2,
NFP_DUMPSPEC_TYPE_INDIRECT_ME_CSR = 3,
NFP_DUMPSPEC_TYPE_RTSYM = 4,
NFP_DUMPSPEC_TYPE_HWINFO = 5,
NFP_DUMPSPEC_TYPE_FWNAME = 6,
NFP_DUMPSPEC_TYPE_HWINFO_FIELD = 7,
NFP_DUMPSPEC_TYPE_PROLOG = 10000,
NFP_DUMPSPEC_TYPE_ERROR = 10001,
};
/* The following structs must be carefully aligned so that they can be used to
* interpret the binary dumpspec and populate the dump data in a deterministic
* way.
*/
/* generic type plus length */
struct nfp_dump_tl {
/* New members must be added within the struct_group() macro below. */
struct_group_tagged(nfp_dump_tl_hdr, hdr,
__be32 type;
__be32 length; /* chunk length to follow, aligned to 8 bytes */
);
char data[];
};
static_assert(offsetof(struct nfp_dump_tl, data) == sizeof(struct nfp_dump_tl_hdr),
"struct member likely outside of struct_group_tagged()");
/* NFP CPP parameters */
struct nfp_dumpspec_cpp_isl_id {
u8 target;
u8 action;
u8 token;
u8 island;
};
struct nfp_dump_common_cpp {
struct nfp_dumpspec_cpp_isl_id cpp_id;
__be32 offset; /* address to start dump */
__be32 dump_length; /* total bytes to dump, aligned to reg size */
};
/* CSR dumpables */
struct nfp_dumpspec_csr {
struct nfp_dump_tl_hdr tl;
struct nfp_dump_common_cpp cpp;
__be32 register_width; /* in bits */
};
struct nfp_dumpspec_rtsym {
struct nfp_dump_tl_hdr tl;
char rtsym[];
};
/* header for register dumpable */
struct nfp_dump_csr {
struct nfp_dump_tl_hdr tl;
struct nfp_dump_common_cpp cpp;
__be32 register_width; /* in bits */
__be32 error; /* error code encountered while reading */
__be32 error_offset; /* offset being read when error occurred */
};
struct nfp_dump_rtsym {
struct nfp_dump_tl_hdr tl;
struct nfp_dump_common_cpp cpp;
__be32 error; /* error code encountered while reading */
u8 padded_name_length; /* pad so data starts at 8 byte boundary */
char rtsym[];
/* after padded_name_length, there is dump_length data */
};
struct nfp_dump_prolog {
struct nfp_dump_tl_hdr tl;
__be32 dump_level;
};
struct nfp_dump_error {
struct nfp_dump_tl_hdr tl;
__be32 error;
char padding[4];
char spec[];
};
/* to track state through debug size calculation TLV traversal */
struct nfp_level_size {
__be32 requested_level; /* input */
u32 total_size; /* output */
};
/* to track state during debug dump creation TLV traversal */
struct nfp_dump_state {
__be32 requested_level; /* input param */
u32 dumped_size; /* adds up to size of dumped data */
u32 buf_size; /* size of buffer pointer to by p */
void *p; /* current point in dump buffer */
};
typedef int (*nfp_tlv_visit)(struct nfp_pf *pf, struct nfp_dump_tl *tl,
void *param);
static int
nfp_traverse_tlvs(struct nfp_pf *pf, void *data, u32 data_length, void *param,
nfp_tlv_visit tlv_visit)
{
long long remaining = data_length;
struct nfp_dump_tl *tl;
u32 total_tlv_size;
void *p = data;
int err;
while (remaining >= sizeof(*tl)) {
tl = p;
if (!tl->type && !tl->length)
break;
if (be32_to_cpu(tl->length) > remaining - sizeof(*tl))
return -EINVAL;
total_tlv_size = sizeof(*tl) + be32_to_cpu(tl->length);
/* Spec TLVs should be aligned to 4 bytes. */
if (total_tlv_size % 4 != 0)
return -EINVAL;
p += total_tlv_size;
remaining -= total_tlv_size;
err = tlv_visit(pf, tl, param);
if (err)
return err;
}
return 0;
}
static u32 nfp_get_numeric_cpp_id(struct nfp_dumpspec_cpp_isl_id *cpp_id)
{
return NFP_CPP_ISLAND_ID(cpp_id->target, cpp_id->action, cpp_id->token,
cpp_id->island);
}
struct nfp_dumpspec *
nfp_net_dump_load_dumpspec(struct nfp_cpp *cpp, struct nfp_rtsym_table *rtbl)
{
const struct nfp_rtsym *specsym;
struct nfp_dumpspec *dumpspec;
int bytes_read;
u64 sym_size;
specsym = nfp_rtsym_lookup(rtbl, NFP_DUMP_SPEC_RTSYM);
if (!specsym)
return NULL;
sym_size = nfp_rtsym_size(specsym);
/* expected size of this buffer is in the order of tens of kilobytes */
dumpspec = vmalloc(sizeof(*dumpspec) + sym_size);
if (!dumpspec)
return NULL;
dumpspec->size = sym_size;
bytes_read = nfp_rtsym_read(cpp, specsym, 0, dumpspec->data, sym_size);
if (bytes_read != sym_size) {
vfree(dumpspec);
nfp_warn(cpp, "Debug dump specification read failed.\n");
return NULL;
}
return dumpspec;
}
static int nfp_dump_error_tlv_size(struct nfp_dump_tl *spec)
{
return ALIGN8(sizeof(struct nfp_dump_error) + sizeof(*spec) +
be32_to_cpu(spec->length));
}
static int nfp_calc_fwname_tlv_size(struct nfp_pf *pf)
{
u32 fwname_len = strlen(nfp_mip_name(pf->mip));
return sizeof(struct nfp_dump_tl) + ALIGN8(fwname_len + 1);
}
static int nfp_calc_hwinfo_field_sz(struct nfp_pf *pf, struct nfp_dump_tl *spec)
{
u32 tl_len, key_len;
const char *value;
tl_len = be32_to_cpu(spec->length);
key_len = strnlen(spec->data, tl_len);
if (key_len == tl_len)
return nfp_dump_error_tlv_size(spec);
value = nfp_hwinfo_lookup(pf->hwinfo, spec->data);
if (!value)
return nfp_dump_error_tlv_size(spec);
return sizeof(struct nfp_dump_tl) + ALIGN8(key_len + strlen(value) + 2);
}
static bool nfp_csr_spec_valid(struct nfp_dumpspec_csr *spec_csr)
{
u32 required_read_sz = sizeof(*spec_csr) - sizeof(spec_csr->tl);
u32 available_sz = be32_to_cpu(spec_csr->tl.length);
u32 reg_width;
if (available_sz < required_read_sz)
return false;
reg_width = be32_to_cpu(spec_csr->register_width);
return reg_width == 32 || reg_width == 64;
}
static int
nfp_calc_rtsym_dump_sz(struct nfp_pf *pf, struct nfp_dump_tl *spec)
{
struct nfp_rtsym_table *rtbl = pf->rtbl;
struct nfp_dumpspec_rtsym *spec_rtsym;
const struct nfp_rtsym *sym;
u32 tl_len, key_len;
spec_rtsym = (struct nfp_dumpspec_rtsym *)spec;
tl_len = be32_to_cpu(spec->length);
key_len = strnlen(spec_rtsym->rtsym, tl_len);
if (key_len == tl_len)
return nfp_dump_error_tlv_size(spec);
sym = nfp_rtsym_lookup(rtbl, spec_rtsym->rtsym);
if (!sym)
return nfp_dump_error_tlv_size(spec);
return ALIGN8(offsetof(struct nfp_dump_rtsym, rtsym) + key_len + 1) +
ALIGN8(nfp_rtsym_size(sym));
}
static int
nfp_add_tlv_size(struct nfp_pf *pf, struct nfp_dump_tl *tl, void *param)
{
struct nfp_dumpspec_csr *spec_csr;
u32 *size = param;
u32 hwinfo_size;
switch (be32_to_cpu(tl->type)) {
case NFP_DUMPSPEC_TYPE_FWNAME:
*size += nfp_calc_fwname_tlv_size(pf);
break;
case NFP_DUMPSPEC_TYPE_CPP_CSR:
case NFP_DUMPSPEC_TYPE_XPB_CSR:
case NFP_DUMPSPEC_TYPE_ME_CSR:
spec_csr = (struct nfp_dumpspec_csr *)tl;
if (!nfp_csr_spec_valid(spec_csr))
*size += nfp_dump_error_tlv_size(tl);
else
*size += ALIGN8(sizeof(struct nfp_dump_csr)) +
ALIGN8(be32_to_cpu(spec_csr->cpp.dump_length));
break;
case NFP_DUMPSPEC_TYPE_INDIRECT_ME_CSR:
spec_csr = (struct nfp_dumpspec_csr *)tl;
if (!nfp_csr_spec_valid(spec_csr))
*size += nfp_dump_error_tlv_size(tl);
else
*size += ALIGN8(sizeof(struct nfp_dump_csr)) +
ALIGN8(be32_to_cpu(spec_csr->cpp.dump_length) *
NFP_IND_NUM_CONTEXTS);
break;
case NFP_DUMPSPEC_TYPE_RTSYM:
*size += nfp_calc_rtsym_dump_sz(pf, tl);
break;
case NFP_DUMPSPEC_TYPE_HWINFO:
hwinfo_size = nfp_hwinfo_get_packed_str_size(pf->hwinfo);
*size += sizeof(struct nfp_dump_tl) + ALIGN8(hwinfo_size);
break;
case NFP_DUMPSPEC_TYPE_HWINFO_FIELD:
*size += nfp_calc_hwinfo_field_sz(pf, tl);
break;
default:
*size += nfp_dump_error_tlv_size(tl);
break;
}
return 0;
}
static int
nfp_calc_specific_level_size(struct nfp_pf *pf, struct nfp_dump_tl *dump_level,
void *param)
{
struct nfp_level_size *lev_sz = param;
if (dump_level->type != lev_sz->requested_level)
return 0;
return nfp_traverse_tlvs(pf, dump_level->data,
be32_to_cpu(dump_level->length),
&lev_sz->total_size, nfp_add_tlv_size);
}
s64 nfp_net_dump_calculate_size(struct nfp_pf *pf, struct nfp_dumpspec *spec,
u32 flag)
{
struct nfp_level_size lev_sz;
int err;
lev_sz.requested_level = cpu_to_be32(flag);
lev_sz.total_size = ALIGN8(sizeof(struct nfp_dump_prolog));
err = nfp_traverse_tlvs(pf, spec->data, spec->size, &lev_sz,
nfp_calc_specific_level_size);
if (err)
return err;
return lev_sz.total_size;
}
static int nfp_add_tlv(u32 type, u32 total_tlv_sz, struct nfp_dump_state *dump)
{
struct nfp_dump_tl *tl = dump->p;
if (total_tlv_sz > dump->buf_size)
return -ENOSPC;
if (dump->buf_size - total_tlv_sz < dump->dumped_size)
return -ENOSPC;
tl->type = cpu_to_be32(type);
tl->length = cpu_to_be32(total_tlv_sz - sizeof(*tl));
dump->dumped_size += total_tlv_sz;
dump->p += total_tlv_sz;
return 0;
}
static int
nfp_dump_error_tlv(struct nfp_dump_tl *spec, int error,
struct nfp_dump_state *dump)
{
struct nfp_dump_error *dump_header = dump->p;
u32 total_spec_size, total_size;
int err;
total_spec_size = sizeof(*spec) + be32_to_cpu(spec->length);
total_size = ALIGN8(sizeof(*dump_header) + total_spec_size);
err = nfp_add_tlv(NFP_DUMPSPEC_TYPE_ERROR, total_size, dump);
if (err)
return err;
dump_header->error = cpu_to_be32(error);
memcpy(dump_header->spec, spec, total_spec_size);
return 0;
}
static int nfp_dump_fwname(struct nfp_pf *pf, struct nfp_dump_state *dump)
{
struct nfp_dump_tl *dump_header = dump->p;
u32 fwname_len, total_size;
const char *fwname;
int err;
fwname = nfp_mip_name(pf->mip);
fwname_len = strlen(fwname);
total_size = sizeof(*dump_header) + ALIGN8(fwname_len + 1);
err = nfp_add_tlv(NFP_DUMPSPEC_TYPE_FWNAME, total_size, dump);
if (err)
return err;
memcpy(dump_header->data, fwname, fwname_len);
return 0;
}
static int
nfp_dump_hwinfo(struct nfp_pf *pf, struct nfp_dump_tl *spec,
struct nfp_dump_state *dump)
{
struct nfp_dump_tl *dump_header = dump->p;
u32 hwinfo_size, total_size;
char *hwinfo;
int err;
hwinfo = nfp_hwinfo_get_packed_strings(pf->hwinfo);
hwinfo_size = nfp_hwinfo_get_packed_str_size(pf->hwinfo);
total_size = sizeof(*dump_header) + ALIGN8(hwinfo_size);
err = nfp_add_tlv(NFP_DUMPSPEC_TYPE_HWINFO, total_size, dump);
if (err)
return err;
memcpy(dump_header->data, hwinfo, hwinfo_size);
return 0;
}
static int nfp_dump_hwinfo_field(struct nfp_pf *pf, struct nfp_dump_tl *spec,
struct nfp_dump_state *dump)
{
struct nfp_dump_tl *dump_header = dump->p;
u32 tl_len, key_len, val_len;
const char *key, *value;
u32 total_size;
int err;
tl_len = be32_to_cpu(spec->length);
key_len = strnlen(spec->data, tl_len);
if (key_len == tl_len)
return nfp_dump_error_tlv(spec, -EINVAL, dump);
key = spec->data;
value = nfp_hwinfo_lookup(pf->hwinfo, key);
if (!value)
return nfp_dump_error_tlv(spec, -ENOENT, dump);
val_len = strlen(value);
total_size = sizeof(*dump_header) + ALIGN8(key_len + val_len + 2);
err = nfp_add_tlv(NFP_DUMPSPEC_TYPE_HWINFO_FIELD, total_size, dump);
if (err)
return err;
memcpy(dump_header->data, key, key_len + 1);
memcpy(dump_header->data + key_len + 1, value, val_len + 1);
return 0;
}
static bool is_xpb_read(struct nfp_dumpspec_cpp_isl_id *cpp_id)
{
return cpp_id->target == NFP_CPP_TARGET_ISLAND_XPB &&
cpp_id->action == 0 && cpp_id->token == 0;
}
static int
nfp_dump_csr_range(struct nfp_pf *pf, struct nfp_dumpspec_csr *spec_csr,
struct nfp_dump_state *dump)
{
struct nfp_dump_tl *spec_csr_tl =
container_of(&spec_csr->tl, struct nfp_dump_tl, hdr);
struct nfp_dump_csr *dump_header = dump->p;
u32 reg_sz, header_size, total_size;
u32 cpp_rd_addr, max_rd_addr;
int bytes_read;
void *dest;
u32 cpp_id;
int err;
if (!nfp_csr_spec_valid(spec_csr))
return nfp_dump_error_tlv(spec_csr_tl, -EINVAL, dump);
reg_sz = be32_to_cpu(spec_csr->register_width) / BITS_PER_BYTE;
header_size = ALIGN8(sizeof(*dump_header));
total_size = header_size +
ALIGN8(be32_to_cpu(spec_csr->cpp.dump_length));
dest = dump->p + header_size;
err = nfp_add_tlv(be32_to_cpu(spec_csr_tl->type), total_size, dump);
if (err)
return err;
dump_header->cpp = spec_csr->cpp;
dump_header->register_width = spec_csr->register_width;
cpp_id = nfp_get_numeric_cpp_id(&spec_csr->cpp.cpp_id);
cpp_rd_addr = be32_to_cpu(spec_csr->cpp.offset);
max_rd_addr = cpp_rd_addr + be32_to_cpu(spec_csr->cpp.dump_length);
while (cpp_rd_addr < max_rd_addr) {
if (is_xpb_read(&spec_csr->cpp.cpp_id)) {
err = nfp_xpb_readl(pf->cpp, cpp_rd_addr, (u32 *)dest);
} else {
bytes_read = nfp_cpp_read(pf->cpp, cpp_id, cpp_rd_addr,
dest, reg_sz);
err = bytes_read == reg_sz ? 0 : -EIO;
}
if (err) {
dump_header->error = cpu_to_be32(err);
dump_header->error_offset = cpu_to_be32(cpp_rd_addr);
break;
}
cpp_rd_addr += reg_sz;
dest += reg_sz;
}
return 0;
}
/* Write context to CSRCtxPtr, then read from it. Then the value can be read
* from IndCtxStatus.
*/
static int
nfp_read_indirect_csr(struct nfp_cpp *cpp,
struct nfp_dumpspec_cpp_isl_id cpp_params, u32 offset,
u32 reg_sz, u32 context, void *dest)
{
u32 csr_ctx_ptr_offs;
u32 cpp_id;
int result;
csr_ctx_ptr_offs = nfp_get_ind_csr_ctx_ptr_offs(offset);
cpp_id = NFP_CPP_ISLAND_ID(cpp_params.target,
NFP_IND_ME_REFL_WR_SIG_INIT,
cpp_params.token, cpp_params.island);
result = nfp_cpp_writel(cpp, cpp_id, csr_ctx_ptr_offs, context);
if (result)
return result;
cpp_id = nfp_get_numeric_cpp_id(&cpp_params);
result = nfp_cpp_read(cpp, cpp_id, csr_ctx_ptr_offs, dest, reg_sz);
if (result != reg_sz)
return result < 0 ? result : -EIO;
result = nfp_cpp_read(cpp, cpp_id, offset, dest, reg_sz);
if (result != reg_sz)
return result < 0 ? result : -EIO;
return 0;
}
static int
nfp_read_all_indirect_csr_ctx(struct nfp_cpp *cpp,
struct nfp_dumpspec_csr *spec_csr, u32 address,
u32 reg_sz, void *dest)
{
u32 ctx;
int err;
for (ctx = 0; ctx < NFP_IND_NUM_CONTEXTS; ctx++) {
err = nfp_read_indirect_csr(cpp, spec_csr->cpp.cpp_id, address,
reg_sz, ctx, dest + ctx * reg_sz);
if (err)
return err;
}
return 0;
}
static int
nfp_dump_indirect_csr_range(struct nfp_pf *pf,
struct nfp_dumpspec_csr *spec_csr,
struct nfp_dump_state *dump)
{
struct nfp_dump_tl *spec_csr_tl =
container_of(&spec_csr->tl, struct nfp_dump_tl, hdr);
struct nfp_dump_csr *dump_header = dump->p;
u32 reg_sz, header_size, total_size;
u32 cpp_rd_addr, max_rd_addr;
u32 reg_data_length;
void *dest;
int err;
if (!nfp_csr_spec_valid(spec_csr))
return nfp_dump_error_tlv(spec_csr_tl, -EINVAL, dump);
reg_sz = be32_to_cpu(spec_csr->register_width) / BITS_PER_BYTE;
header_size = ALIGN8(sizeof(*dump_header));
reg_data_length = be32_to_cpu(spec_csr->cpp.dump_length) *
NFP_IND_NUM_CONTEXTS;
total_size = header_size + ALIGN8(reg_data_length);
dest = dump->p + header_size;
err = nfp_add_tlv(be32_to_cpu(spec_csr_tl->type), total_size, dump);
if (err)
return err;
dump_header->cpp = spec_csr->cpp;
dump_header->register_width = spec_csr->register_width;
cpp_rd_addr = be32_to_cpu(spec_csr->cpp.offset);
max_rd_addr = cpp_rd_addr + be32_to_cpu(spec_csr->cpp.dump_length);
while (cpp_rd_addr < max_rd_addr) {
err = nfp_read_all_indirect_csr_ctx(pf->cpp, spec_csr,
cpp_rd_addr, reg_sz, dest);
if (err) {
dump_header->error = cpu_to_be32(err);
dump_header->error_offset = cpu_to_be32(cpp_rd_addr);
break;
}
cpp_rd_addr += reg_sz;
dest += reg_sz * NFP_IND_NUM_CONTEXTS;
}
return 0;
}
static int
nfp_dump_single_rtsym(struct nfp_pf *pf, struct nfp_dumpspec_rtsym *spec,
struct nfp_dump_state *dump)
{
struct nfp_dump_tl *spec_tl =
container_of(&spec->tl, struct nfp_dump_tl, hdr);
struct nfp_dump_rtsym *dump_header = dump->p;
struct nfp_dumpspec_cpp_isl_id cpp_params;
struct nfp_rtsym_table *rtbl = pf->rtbl;
u32 header_size, total_size, sym_size;
const struct nfp_rtsym *sym;
u32 tl_len, key_len;
int bytes_read;
void *dest;
int err;
tl_len = be32_to_cpu(spec_tl->length);
key_len = strnlen(spec->rtsym, tl_len);
if (key_len == tl_len)
return nfp_dump_error_tlv(spec_tl, -EINVAL, dump);
sym = nfp_rtsym_lookup(rtbl, spec->rtsym);
if (!sym)
return nfp_dump_error_tlv(spec_tl, -ENOENT, dump);
sym_size = nfp_rtsym_size(sym);
header_size =
ALIGN8(offsetof(struct nfp_dump_rtsym, rtsym) + key_len + 1);
total_size = header_size + ALIGN8(sym_size);
dest = dump->p + header_size;
err = nfp_add_tlv(be32_to_cpu(spec_tl->type), total_size, dump);
if (err)
return err;
dump_header->padded_name_length =
header_size - offsetof(struct nfp_dump_rtsym, rtsym);
memcpy(dump_header->rtsym, spec->rtsym, key_len + 1);
dump_header->cpp.dump_length = cpu_to_be32(sym_size);
if (sym->type != NFP_RTSYM_TYPE_ABS) {
cpp_params.target = sym->target;
cpp_params.action = NFP_CPP_ACTION_RW;
cpp_params.token = 0;
cpp_params.island = sym->domain;
dump_header->cpp.cpp_id = cpp_params;
dump_header->cpp.offset = cpu_to_be32(sym->addr);
}
bytes_read = nfp_rtsym_read(pf->cpp, sym, 0, dest, sym_size);
if (bytes_read != sym_size) {
if (bytes_read >= 0)
bytes_read = -EIO;
dump_header->error = cpu_to_be32(bytes_read);
}
return 0;
}
static int
nfp_dump_for_tlv(struct nfp_pf *pf, struct nfp_dump_tl *tl, void *param)
{
struct nfp_dumpspec_rtsym *spec_rtsym;
struct nfp_dump_state *dump = param;
struct nfp_dumpspec_csr *spec_csr;
int err;
switch (be32_to_cpu(tl->type)) {
case NFP_DUMPSPEC_TYPE_FWNAME:
err = nfp_dump_fwname(pf, dump);
if (err)
return err;
break;
case NFP_DUMPSPEC_TYPE_CPP_CSR:
case NFP_DUMPSPEC_TYPE_XPB_CSR:
case NFP_DUMPSPEC_TYPE_ME_CSR:
spec_csr = (struct nfp_dumpspec_csr *)tl;
err = nfp_dump_csr_range(pf, spec_csr, dump);
if (err)
return err;
break;
case NFP_DUMPSPEC_TYPE_INDIRECT_ME_CSR:
spec_csr = (struct nfp_dumpspec_csr *)tl;
err = nfp_dump_indirect_csr_range(pf, spec_csr, dump);
if (err)
return err;
break;
case NFP_DUMPSPEC_TYPE_RTSYM:
spec_rtsym = (struct nfp_dumpspec_rtsym *)tl;
err = nfp_dump_single_rtsym(pf, spec_rtsym, dump);
if (err)
return err;
break;
case NFP_DUMPSPEC_TYPE_HWINFO:
err = nfp_dump_hwinfo(pf, tl, dump);
if (err)
return err;
break;
case NFP_DUMPSPEC_TYPE_HWINFO_FIELD:
err = nfp_dump_hwinfo_field(pf, tl, dump);
if (err)
return err;
break;
default:
err = nfp_dump_error_tlv(tl, -EOPNOTSUPP, dump);
if (err)
return err;
}
return 0;
}
static int
nfp_dump_specific_level(struct nfp_pf *pf, struct nfp_dump_tl *dump_level,
void *param)
{
struct nfp_dump_state *dump = param;
if (dump_level->type != dump->requested_level)
return 0;
return nfp_traverse_tlvs(pf, dump_level->data,
be32_to_cpu(dump_level->length), dump,
nfp_dump_for_tlv);
}
static int nfp_dump_populate_prolog(struct nfp_dump_state *dump)
{
struct nfp_dump_prolog *prolog = dump->p;
u32 total_size;
int err;
total_size = ALIGN8(sizeof(*prolog));
err = nfp_add_tlv(NFP_DUMPSPEC_TYPE_PROLOG, total_size, dump);
if (err)
return err;
prolog->dump_level = dump->requested_level;
return 0;
}
int nfp_net_dump_populate_buffer(struct nfp_pf *pf, struct nfp_dumpspec *spec,
struct ethtool_dump *dump_param, void *dest)
{
struct nfp_dump_state dump;
int err;
dump.requested_level = cpu_to_be32(dump_param->flag);
dump.dumped_size = 0;
dump.p = dest;
dump.buf_size = dump_param->len;
err = nfp_dump_populate_prolog(&dump);
if (err)
return err;
err = nfp_traverse_tlvs(pf, spec->data, spec->size, &dump,
nfp_dump_specific_level);
if (err)
return err;
/* Set size of actual dump, to trigger warning if different from
* calculated size.
*/
dump_param->len = dump.dumped_size;
return 0;
}
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