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nfp: load debug dump spec 

Load the TLV-based binary specification of what needs to be included in
a dump, from the "_abi_dump_spec" rtsymbol. If the symbol is not defined,
then dumps for levels >= 1 are not supported.

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 23:34:13 +01:00 committed by David S. Miller
parent d79e19f564
commit 8a925303b6
1 changed files with 33 additions and 1 deletions
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34
drivers/net/ethernet/netronome/nfp/nfp_net_debugdump.c
View File

@ -32,13 +32,45 @@
*/
#include <linux/ethtool.h>
#include <linux/vmalloc.h>
#include "nfp_main.h"
#include "nfpcore/nfp.h"
#include "nfpcore/nfp_nffw.h"
#define NFP_DUMP_SPEC_RTSYM "_abi_dump_spec"
struct nfp_dumpspec *
nfp_net_dump_load_dumpspec(struct nfp_cpp *cpp, struct nfp_rtsym_table *rtbl)
{
return NULL;
const struct nfp_rtsym *specsym;
struct nfp_dumpspec *dumpspec;
int bytes_read;
u32 cpp_id;
specsym = nfp_rtsym_lookup(rtbl, NFP_DUMP_SPEC_RTSYM);
if (!specsym)
return NULL;
/* expected size of this buffer is in the order of tens of kilobytes */
dumpspec = vmalloc(sizeof(*dumpspec) + specsym->size);
if (!dumpspec)
return NULL;
dumpspec->size = specsym->size;
cpp_id = NFP_CPP_ISLAND_ID(specsym->target, NFP_CPP_ACTION_RW, 0,
specsym->domain);
bytes_read = nfp_cpp_read(cpp, cpp_id, specsym->addr, dumpspec->data,
specsym->size);
if (bytes_read != specsym->size) {
vfree(dumpspec);
nfp_warn(cpp, "Debug dump specification read failed.\n");
return NULL;
}
return dumpspec;
}
s64 nfp_net_dump_calculate_size(struct nfp_pf *pf, struct nfp_dumpspec *spec,