Commit 0aa7bc3e authored by Dmitry Bezrukov's avatar Dmitry Bezrukov Committed by David S. Miller
Browse files

net: atlantic: changes for multi-TC support 



This patch contains the following changes:
* add cfg->is_ptp (used for PTP enable/disable switch, which
  is described in more details below);
* add cfg->tc_mode (A1 supports 2 HW modes only);
* setup queue to TC mapping based on TC mode on A2;
* remove hw_tx_tc_mode_get / hw_rx_tc_mode_get hw_ops.

In the first generation of our hardware (A1), a whole traffic class is
consumed for PTP handling in FW (FW uses it to send the ptp data and to
send back timestamps).
The 'is_ptp' flag introduced in this patch will be used in to automatically
disable PTP when a conflicting configuration is detected, e.g. when
multiple TCs are enabled.

Signed-off-by: default avatarDmitry Bezrukov <dbezrukov@marvell.com>
Co-developed-by: default avatarMark Starovoytov <mstarovoitov@marvell.com>
Signed-off-by: default avatarMark Starovoytov <mstarovoitov@marvell.com>
Signed-off-by: default avatarIgor Russkikh <irusskikh@marvell.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 593dd0fc

drivers/net/ethernet/aquantia/atlantic/aq_hw.h

+6 −4
Original line number Diff line number Diff line
@@ -18,6 +18,12 @@ 
#define AQ_HW_MAC_COUNTER_HZ   312500000ll

#define AQ_HW_PHY_COUNTER_HZ   160000000ll



enum aq_tc_mode {

	AQ_TC_MODE_INVALID = -1,

	AQ_TC_MODE_8TCS,

	AQ_TC_MODE_4TCS,

};



#define AQ_RX_FIRST_LOC_FVLANID     0U

#define AQ_RX_LAST_LOC_FVLANID	   15U

#define AQ_RX_FIRST_LOC_FETHERT    16U
@@ -281,10 +287,6 @@ struct aq_hw_ops { 
	int (*hw_set_offload)(struct aq_hw_s *self,

			      struct aq_nic_cfg_s *aq_nic_cfg);



	int (*hw_tx_tc_mode_get)(struct aq_hw_s *self, u32 *tc_mode);



	int (*hw_rx_tc_mode_get)(struct aq_hw_s *self, u32 *tc_mode);



	int (*hw_ring_hwts_rx_fill)(struct aq_hw_s *self,

				    struct aq_ring_s *aq_ring);

drivers/net/ethernet/aquantia/atlantic/aq_nic.c

+17 −9
Original line number Diff line number Diff line
@@ -89,6 +89,7 @@ void aq_nic_cfg_start(struct aq_nic_s *self) 
	cfg->is_autoneg = AQ_CFG_IS_AUTONEG_DEF;



	cfg->is_lro = AQ_CFG_IS_LRO_DEF;

	cfg->is_ptp = true;



	/*descriptors */

	cfg->rxds = min(cfg->aq_hw_caps->rxds_max, AQ_CFG_RXDS_DEF);
@@ -122,6 +123,11 @@ void aq_nic_cfg_start(struct aq_nic_s *self) 
		cfg->vecs = 1U;

	}



	if (cfg->vecs <= 4)

		cfg->tc_mode = AQ_TC_MODE_8TCS;

	else

		cfg->tc_mode = AQ_TC_MODE_4TCS;



	/* Check if we have enough vectors allocated for

	 * link status IRQ. If no - we'll know link state from

	 * slower service task.
@@ -409,6 +415,7 @@ int aq_nic_init(struct aq_nic_s *self) 
		aq_vec_init(aq_vec, self->aq_hw_ops, self->aq_hw);

	}



	if (aq_nic_get_cfg(self)->is_ptp) {

		err = aq_ptp_init(self, self->irqvecs - 1);

		if (err < 0)

			goto err_exit;
@@ -420,6 +427,7 @@ int aq_nic_init(struct aq_nic_s *self) 
		err = aq_ptp_ring_init(self);

		if (err < 0)

			goto err_exit;

	}



	netif_carrier_off(self->ndev);

drivers/net/ethernet/aquantia/atlantic/aq_nic.h

+2 −0
Original line number Diff line number Diff line
@@ -59,6 +59,8 @@ struct aq_nic_cfg_s { 
	bool is_polling;

	bool is_rss;

	bool is_lro;

	bool is_ptp;

	enum aq_tc_mode tc_mode;

	u32 priv_flags;

	u8  tcs;

	struct aq_rss_parameters aq_rss;

drivers/net/ethernet/aquantia/atlantic/aq_ptp.c

+13 −14
Original line number Diff line number Diff line
@@ -945,26 +945,29 @@ void aq_ptp_ring_deinit(struct aq_nic_s *aq_nic) 
#define PTP_4TC_RING_IDX            16

#define PTP_HWST_RING_IDX           31



/* Index must be 8 (8 TCs) or 16 (4 TCs).

 * It depends on Traffic Class mode.

 */

static unsigned int ptp_ring_idx(const enum aq_tc_mode tc_mode)

{

	if (tc_mode == AQ_TC_MODE_8TCS)

		return PTP_8TC_RING_IDX;



	return PTP_4TC_RING_IDX;

}



int aq_ptp_ring_alloc(struct aq_nic_s *aq_nic)

{

	struct aq_ptp_s *aq_ptp = aq_nic->aq_ptp;

	unsigned int tx_ring_idx, rx_ring_idx;

	struct aq_ring_s *hwts;

	u32 tx_tc_mode, rx_tc_mode;

	struct aq_ring_s *ring;

	int err;



	if (!aq_ptp)

		return 0;



	/* Index must to be 8 (8 TCs) or 16 (4 TCs).

	 * It depends from Traffic Class mode.

	 */

	aq_nic->aq_hw_ops->hw_tx_tc_mode_get(aq_nic->aq_hw, &tx_tc_mode);

	if (tx_tc_mode == 0)

		tx_ring_idx = PTP_8TC_RING_IDX;

	else

		tx_ring_idx = PTP_4TC_RING_IDX;

	tx_ring_idx = ptp_ring_idx(aq_nic->aq_nic_cfg.tc_mode);



	ring = aq_ring_tx_alloc(&aq_ptp->ptp_tx, aq_nic,

				tx_ring_idx, &aq_nic->aq_nic_cfg);
@@ -973,11 +976,7 @@ int aq_ptp_ring_alloc(struct aq_nic_s *aq_nic) 
		goto err_exit;

	}



	aq_nic->aq_hw_ops->hw_rx_tc_mode_get(aq_nic->aq_hw, &rx_tc_mode);

	if (rx_tc_mode == 0)

		rx_ring_idx = PTP_8TC_RING_IDX;

	else

		rx_ring_idx = PTP_4TC_RING_IDX;

	rx_ring_idx = ptp_ring_idx(aq_nic->aq_nic_cfg.tc_mode);



	ring = aq_ring_rx_alloc(&aq_ptp->ptp_rx, aq_nic,

				rx_ring_idx, &aq_nic->aq_nic_cfg);

drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_b0.c

+7 −18
Original line number Diff line number Diff line
@@ -131,13 +131,16 @@ static int hw_atl_b0_tc_ptp_set(struct aq_hw_s *self) 


static int hw_atl_b0_hw_qos_set(struct aq_hw_s *self)

{

	struct aq_nic_cfg_s *cfg = self->aq_nic_cfg;

	u32 tx_buff_size = HW_ATL_B0_TXBUF_MAX;

	u32 rx_buff_size = HW_ATL_B0_RXBUF_MAX;

	unsigned int i_priority = 0U;

	u32 tc = 0U;



	if (cfg->is_ptp) {

		tx_buff_size -= HW_ATL_B0_PTP_TXBUF_SIZE;

		rx_buff_size -= HW_ATL_B0_PTP_RXBUF_SIZE;

	}



	/* TPS Descriptor rate init */

	hw_atl_tps_tx_pkt_shed_desc_rate_curr_time_res_set(self, 0x0U);
@@ -180,6 +183,7 @@ static int hw_atl_b0_hw_qos_set(struct aq_hw_s *self) 


	hw_atl_b0_set_fc(self, self->aq_nic_cfg->fc.req, tc);



	if (cfg->is_ptp)

		hw_atl_b0_tc_ptp_set(self);



	/* QoS 802.1p priority -> TC mapping */
@@ -1079,18 +1083,6 @@ int hw_atl_b0_hw_ring_rx_stop(struct aq_hw_s *self, struct aq_ring_s *ring) 
	return aq_hw_err_from_flags(self);

}



static int hw_atl_b0_tx_tc_mode_get(struct aq_hw_s *self, u32 *tc_mode)

{

	*tc_mode = hw_atl_tpb_tps_tx_tc_mode_get(self);

	return aq_hw_err_from_flags(self);

}



static int hw_atl_b0_rx_tc_mode_get(struct aq_hw_s *self, u32 *tc_mode)

{

	*tc_mode = hw_atl_rpb_rpf_rx_traf_class_mode_get(self);

	return aq_hw_err_from_flags(self);

}



#define get_ptp_ts_val_u64(self, indx) \

	((u64)(hw_atl_pcs_ptp_clock_get(self, indx) & 0xffff))
@@ -1508,9 +1500,6 @@ const struct aq_hw_ops hw_atl_ops_b0 = { 
	.hw_get_hw_stats             = hw_atl_utils_get_hw_stats,

	.hw_get_fw_version           = hw_atl_utils_get_fw_version,



	.hw_tx_tc_mode_get       = hw_atl_b0_tx_tc_mode_get,

	.hw_rx_tc_mode_get       = hw_atl_b0_rx_tc_mode_get,



	.hw_ring_hwts_rx_fill        = hw_atl_b0_hw_ring_hwts_rx_fill,

	.hw_ring_hwts_rx_receive     = hw_atl_b0_hw_ring_hwts_rx_receive,

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