[PATCH net-next 06/10] nfp: dump all hwinfo

[Simon Horman <simon.horman@netronome.com>]

From: Carl Heymann <carl.heymann@netronome.com>

- Dump hwinfo as separate TLV chunk, in a packed format containing
  zero-separated key and value strings.
- This provides additional debug context, if requested by the dumpspec.

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>
---
 .../net/ethernet/netronome/nfp/nfp_net_debugdump.c | 33 ++++++++++++++++++++++
 drivers/net/ethernet/netronome/nfp/nfpcore/nfp.h   |  2 ++
 .../ethernet/netronome/nfp/nfpcore/nfp_hwinfo.c    | 10 +++++++
 3 files changed, 45 insertions(+)

diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net_debugdump.c b/drivers/net/ethernet/netronome/nfp/nfp_net_debugdump.c
index 746e114a8da8..449cf0a3a158 100644
--- a/drivers/net/ethernet/netronome/nfp/nfp_net_debugdump.c
+++ b/drivers/net/ethernet/netronome/nfp/nfp_net_debugdump.c
@@ -44,6 +44,7 @@
 
 enum nfp_dumpspec_type {
 	NFP_DUMPSPEC_TYPE_RTSYM = 4,
+	NFP_DUMPSPEC_TYPE_HWINFO = 5,
 	NFP_DUMPSPEC_TYPE_PROLOG = 10000,
 	NFP_DUMPSPEC_TYPE_ERROR = 10001,
 };
@@ -222,11 +223,16 @@ static int
 nfp_add_tlv_size(struct nfp_pf *pf, struct nfp_dump_tl *tl, void *param)
 {
 	u32 *size = param;
+	u32 hwinfo_size;
 
 	switch (be32_to_cpu(tl->type)) {
 	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;
 	default:
 		*size += nfp_dump_error_tlv_size(tl);
 		break;
@@ -307,6 +313,28 @@ nfp_dump_error_tlv(struct nfp_dump_tl *spec, int error,
 }
 
 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_single_rtsym(struct nfp_pf *pf, struct nfp_dumpspec_rtsym *spec,
 		      struct nfp_dump_state *dump)
 {
@@ -377,6 +405,11 @@ nfp_dump_for_tlv(struct nfp_pf *pf, struct nfp_dump_tl *tl, void *param)
 		if (err)
 			return err;
 		break;
+	case NFP_DUMPSPEC_TYPE_HWINFO:
+		err = nfp_dump_hwinfo(pf, tl, dump);
+		if (err)
+			return err;
+		break;
 	default:
 		err = nfp_dump_error_tlv(tl, -EOPNOTSUPP, dump);
 		if (err)
diff --git a/drivers/net/ethernet/netronome/nfp/nfpcore/nfp.h b/drivers/net/ethernet/netronome/nfp/nfpcore/nfp.h
index 3ce51f03126f..ced62d112aa2 100644
--- a/drivers/net/ethernet/netronome/nfp/nfpcore/nfp.h
+++ b/drivers/net/ethernet/netronome/nfp/nfpcore/nfp.h
@@ -49,6 +49,8 @@
 struct nfp_hwinfo;
 struct nfp_hwinfo *nfp_hwinfo_read(struct nfp_cpp *cpp);
 const char *nfp_hwinfo_lookup(struct nfp_hwinfo *hwinfo, const char *lookup);
+char *nfp_hwinfo_get_packed_strings(struct nfp_hwinfo *hwinfo);
+u32 nfp_hwinfo_get_packed_str_size(struct nfp_hwinfo *hwinfo);
 
 /* Implemented in nfp_nsp.c, low level functions */
 
diff --git a/drivers/net/ethernet/netronome/nfp/nfpcore/nfp_hwinfo.c b/drivers/net/ethernet/netronome/nfp/nfpcore/nfp_hwinfo.c
index 4f24aff1e772..063a9a6243d6 100644
--- a/drivers/net/ethernet/netronome/nfp/nfpcore/nfp_hwinfo.c
+++ b/drivers/net/ethernet/netronome/nfp/nfpcore/nfp_hwinfo.c
@@ -302,3 +302,13 @@ const char *nfp_hwinfo_lookup(struct nfp_hwinfo *hwinfo, const char *lookup)
 
 	return NULL;
 }
+
+char *nfp_hwinfo_get_packed_strings(struct nfp_hwinfo *hwinfo)
+{
+	return hwinfo->data;
+}
+
+u32 nfp_hwinfo_get_packed_str_size(struct nfp_hwinfo *hwinfo)
+{
+	return le32_to_cpu(hwinfo->size) - sizeof(u32);
+}
-- 
2.11.0