netdev - [PATCH v3 net-next 12/16] sfc_ef100: extend ef100_check_caps to cover datapath

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Message-ID: <29509b43-2dab-2118-0758-6f22fee2c363@solarflare.com>
Date:   Thu, 16 Jul 2020 14:03:05 +0100
From:   Edward Cree <ecree@...arflare.com>
To:     <linux-net-drivers@...arflare.com>, <davem@...emloft.net>
CC:     <netdev@...r.kernel.org>
Subject: [PATCH v3 net-next 12/16] sfc_ef100: extend ef100_check_caps to cover
 datapath_caps3

MC_CMD_GET_CAPABILITIES now has a third word of flags; extend the
 efx_has_cap() machinery to cover it.

Signed-off-by: Edward Cree <ecree@...arflare.com>
---
 drivers/net/ethernet/sfc/ef100_nic.c | 9 ++++++++-
 drivers/net/ethernet/sfc/ef100_nic.h | 1 +
 drivers/net/ethernet/sfc/mcdi.h      | 4 ++--
 3 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/sfc/ef100_nic.c b/drivers/net/ethernet/sfc/ef100_nic.c
index 06e9ae58f1c6..fe7a5c4bc291 100644
--- a/drivers/net/ethernet/sfc/ef100_nic.c
+++ b/drivers/net/ethernet/sfc/ef100_nic.c
@@ -128,7 +128,7 @@ static void ef100_mcdi_reboot_detected(struct efx_nic *efx)
  */
 static int efx_ef100_init_datapath_caps(struct efx_nic *efx)
 {
-	MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_CAPABILITIES_V4_OUT_LEN);
+	MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_CAPABILITIES_V7_OUT_LEN);
 	struct ef100_nic_data *nic_data = efx->nic_data;
 	u8 vi_window_mode;
 	size_t outlen;
@@ -150,6 +150,11 @@ static int efx_ef100_init_datapath_caps(struct efx_nic *efx)
 					     GET_CAPABILITIES_OUT_FLAGS1);
 	nic_data->datapath_caps2 = MCDI_DWORD(outbuf,
 					      GET_CAPABILITIES_V2_OUT_FLAGS2);
+	if (outlen < MC_CMD_GET_CAPABILITIES_V7_OUT_LEN)
+		nic_data->datapath_caps3 = 0;
+	else
+		nic_data->datapath_caps3 = MCDI_DWORD(outbuf,
+						      GET_CAPABILITIES_V7_OUT_FLAGS3);
 
 	vi_window_mode = MCDI_BYTE(outbuf,
 				   GET_CAPABILITIES_V3_OUT_VI_WINDOW_MODE);
@@ -349,6 +354,8 @@ static unsigned int ef100_check_caps(const struct efx_nic *efx,
 		return nic_data->datapath_caps & BIT_ULL(flag);
 	case MC_CMD_GET_CAPABILITIES_V8_OUT_FLAGS2_OFST:
 		return nic_data->datapath_caps2 & BIT_ULL(flag);
+	case MC_CMD_GET_CAPABILITIES_V8_OUT_FLAGS3_OFST:
+		return nic_data->datapath_caps3 & BIT_ULL(flag);
 	default:
 		return 0;
 	}
diff --git a/drivers/net/ethernet/sfc/ef100_nic.h b/drivers/net/ethernet/sfc/ef100_nic.h
index 392611cc33b5..7744ec85bec6 100644
--- a/drivers/net/ethernet/sfc/ef100_nic.h
+++ b/drivers/net/ethernet/sfc/ef100_nic.h
@@ -22,6 +22,7 @@ struct ef100_nic_data {
 	struct efx_buffer mcdi_buf;
 	u32 datapath_caps;
 	u32 datapath_caps2;
+	u32 datapath_caps3;
 	u16 warm_boot_count;
 	DECLARE_BITMAP(evq_phases, EFX_MAX_CHANNELS);
 };
diff --git a/drivers/net/ethernet/sfc/mcdi.h b/drivers/net/ethernet/sfc/mcdi.h
index e053adfe82b0..658cf345420d 100644
--- a/drivers/net/ethernet/sfc/mcdi.h
+++ b/drivers/net/ethernet/sfc/mcdi.h
@@ -327,10 +327,10 @@ void efx_mcdi_sensor_event(struct efx_nic *efx, efx_qword_t *ev);
 	EFX_QWORD_FIELD(_ev, MCDI_EVENT_ ## _field)
 
 #define MCDI_CAPABILITY(field)						\
-	MC_CMD_GET_CAPABILITIES_V4_OUT_ ## field ## _LBN
+	MC_CMD_GET_CAPABILITIES_V8_OUT_ ## field ## _LBN
 
 #define MCDI_CAPABILITY_OFST(field) \
-	MC_CMD_GET_CAPABILITIES_V4_OUT_ ## field ## _OFST
+	MC_CMD_GET_CAPABILITIES_V8_OUT_ ## field ## _OFST
 
 #define efx_has_cap(efx, field) \
 	efx->type->check_caps(efx, \