diff options
author | Carl Heymann <carl.heymann@netronome.com> | 2017-12-04 23:34:13 +0100 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2017-12-05 15:01:01 -0500 |
commit | 8a925303b695f6319b45a412b6945318e3e8b0da (patch) | |
tree | 1b0ed2dc54dee3f14354ca3389260e6c350b93a1 /drivers | |
parent | d79e19f564bfbd8017e75878fb2a9fce0af764cf (diff) |
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>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/net/ethernet/netronome/nfp/nfp_net_debugdump.c | 34 |
1 files changed, 33 insertions, 1 deletions
diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net_debugdump.c b/drivers/net/ethernet/netronome/nfp/nfp_net_debugdump.c index a7061b6c609d..15b6623ef0b2 100644 --- a/drivers/net/ethernet/netronome/nfp/nfp_net_debugdump.c +++ b/drivers/net/ethernet/netronome/nfp/nfp_net_debugdump.c @@ -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, |