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nfp: dump rtsyms

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- Support rtsym TLVs.
- If specified rtsym is not found, dump the spec TLV as -ENOENT error.

Signed-off-by: Carl Heymann <carl.heymann@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Carl Heymann 2017-12-04 23:34:16 +01:00 committed by David S. Miller
parent f3682c7866
commit e1e798e3fd
1 changed files with 124 additions and 0 deletions
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124
drivers/net/ethernet/netronome/nfp/nfp_net_debugdump.c
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@ -43,6 +43,7 @@
#define ALIGN8(x) ALIGN(x, 8)
enum nfp_dumpspec_type {
NFP_DUMPSPEC_TYPE_RTSYM = 4,
NFP_DUMPSPEC_TYPE_PROLOG = 10000,
NFP_DUMPSPEC_TYPE_ERROR = 10001,
};
@ -59,6 +60,34 @@ struct nfp_dump_tl {
char data[0];
};
/* 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 */
};
struct nfp_dumpspec_rtsym {
struct nfp_dump_tl tl;
char rtsym[0];
};
struct nfp_dump_rtsym {
struct nfp_dump_tl 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[0];
/* after padded_name_length, there is dump_length data */
};
struct nfp_dump_prolog {
struct nfp_dump_tl tl;
__be32 dump_level;
@ -122,6 +151,12 @@ nfp_traverse_tlvs(struct nfp_pf *pf, void *data, u32 data_length, void *param,
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)
{
@ -161,12 +196,37 @@ static int nfp_dump_error_tlv_size(struct nfp_dump_tl *spec)
be32_to_cpu(spec->length));
}
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(sym->size);
}
static int
nfp_add_tlv_size(struct nfp_pf *pf, struct nfp_dump_tl *tl, void *param)
{
u32 *size = param;
switch (be32_to_cpu(tl->type)) {
case NFP_DUMPSPEC_TYPE_RTSYM:
*size += nfp_calc_rtsym_dump_sz(pf, tl);
break;
default:
*size += nfp_dump_error_tlv_size(tl);
break;
@ -246,13 +306,77 @@ nfp_dump_error_tlv(struct nfp_dump_tl *spec, int error,
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_rtsym *dump_header = dump->p;
struct nfp_dumpspec_cpp_isl_id cpp_params;
struct nfp_rtsym_table *rtbl = pf->rtbl;
const struct nfp_rtsym *sym;
u32 header_size, total_size;
u32 tl_len, key_len;
int bytes_read;
u32 cpp_id;
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);
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);
cpp_params.target = sym->target;
cpp_params.action = NFP_CPP_ACTION_RW;
cpp_params.token = 0;
cpp_params.island = sym->domain;
cpp_id = nfp_get_numeric_cpp_id(&cpp_params);
dump_header->cpp.cpp_id = cpp_params;
dump_header->cpp.offset = cpu_to_be32(sym->addr);
dump_header->cpp.dump_length = cpu_to_be32(sym->size);
bytes_read = nfp_cpp_read(pf->cpp, cpp_id, sym->addr, 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;
int err;
switch (be32_to_cpu(tl->type)) {
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;
default:
err = nfp_dump_error_tlv(tl, -EOPNOTSUPP, dump);
if (err)