Commit 2f23678c authored by David S. Miller's avatar David S. Miller
Browse files

Merge branch 'Refactor-lan9303_xxx_packet_processing' 



Egil Hjelmeland says:

====================
Refactor lan9303_xxx_packet_processing

This series is purely non functional.

It changes the lan9303_enable_packet_processing,
lan9303_disable_packet_processing() to pass port number (0,1,2) as
parameter instead of port offset. This aligns them with
other functions in the module, and makes it possible to simplify the code.

The lan9303_enable_packet_processing, lan9303_disable_packet_processing
functions operate on port. Therefore rename the functions to reflect that
as well.

Reviewer pointed out lan9303_get_ethtool_stats would be better off with
the use of a lan9303_read_switch_port(). So that was added to the series.

Changes v3 -> v4:
 - Whitespace adjustments.

Changes v2 -> v3:
 - Patch 1: Removed the change in lan9303_get_ethtool_stats
 - Added patch 4: rename lan9303_xxx_packet_processing
 - Added patch 5: refactor lan9303_get_ethtool_stats

Changes v1 -> v2:
 - introduced lan9303_write_switch_port() in first patch
 - inserted LAN9303_NUM_PORTS patch
 - Use LAN9303_NUM_PORTS in last patch. Plus whitespace change.
====================

Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parents 51cb87c0 0a967b4a

drivers/net/dsa/lan9303-core.c

+50 −46
Original line number Diff line number Diff line
@@ -20,6 +20,8 @@ 


#include "lan9303.h"



#define LAN9303_NUM_PORTS 3



/* 13.2 System Control and Status Registers

 * Multiply register number by 4 to get address offset.

 */
@@ -159,9 +161,7 @@ 
# define LAN9303_BM_EGRSS_PORT_TYPE_SPECIAL_TAG_PORT1 (BIT(9) | BIT(8))

# define LAN9303_BM_EGRSS_PORT_TYPE_SPECIAL_TAG_PORT0 (BIT(1) | BIT(0))



#define LAN9303_PORT_0_OFFSET 0x400

#define LAN9303_PORT_1_OFFSET 0x800

#define LAN9303_PORT_2_OFFSET 0xc00

#define LAN9303_SWITCH_PORT_REG(port, reg0) (0x400 * (port) + (reg0))



/* the built-in PHYs are of type LAN911X */

#define MII_LAN911X_SPECIAL_MODES 0x12
@@ -428,6 +428,20 @@ on_error: 
	return ret;

}



static int lan9303_write_switch_port(struct lan9303 *chip, int port,

				     u16 regnum, u32 val)

{

	return lan9303_write_switch_reg(

		chip, LAN9303_SWITCH_PORT_REG(port, regnum), val);

}



static int lan9303_read_switch_port(struct lan9303 *chip, int port,

				    u16 regnum, u32 *val)

{

	return lan9303_read_switch_reg(

		chip, LAN9303_SWITCH_PORT_REG(port, regnum), val);

}



static int lan9303_detect_phy_setup(struct lan9303 *chip)

{

	int reg;
@@ -458,40 +472,37 @@ static int lan9303_detect_phy_setup(struct lan9303 *chip) 
	return 0;

}



#define LAN9303_MAC_RX_CFG_OFFS (LAN9303_MAC_RX_CFG_0 - LAN9303_PORT_0_OFFSET)

#define LAN9303_MAC_TX_CFG_OFFS (LAN9303_MAC_TX_CFG_0 - LAN9303_PORT_0_OFFSET)



static int lan9303_disable_packet_processing(struct lan9303 *chip,

static int lan9303_disable_processing_port(struct lan9303 *chip,

					   unsigned int port)

{

	int ret;



	/* disable RX, but keep register reset default values else */

	ret = lan9303_write_switch_reg(chip, LAN9303_MAC_RX_CFG_OFFS + port,

	ret = lan9303_write_switch_port(chip, port, LAN9303_MAC_RX_CFG_0,

					LAN9303_MAC_RX_CFG_X_REJECT_MAC_TYPES);

	if (ret)

		return ret;



	/* disable TX, but keep register reset default values else */

	return lan9303_write_switch_reg(chip, LAN9303_MAC_TX_CFG_OFFS + port,

	return lan9303_write_switch_port(chip, port, LAN9303_MAC_TX_CFG_0,

				LAN9303_MAC_TX_CFG_X_TX_IFG_CONFIG_DEFAULT |

				LAN9303_MAC_TX_CFG_X_TX_PAD_ENABLE);

}



static int lan9303_enable_packet_processing(struct lan9303 *chip,

static int lan9303_enable_processing_port(struct lan9303 *chip,

					  unsigned int port)

{

	int ret;



	/* enable RX and keep register reset default values else */

	ret = lan9303_write_switch_reg(chip, LAN9303_MAC_RX_CFG_OFFS + port,

	ret = lan9303_write_switch_port(chip, port, LAN9303_MAC_RX_CFG_0,

					LAN9303_MAC_RX_CFG_X_REJECT_MAC_TYPES |

					LAN9303_MAC_RX_CFG_X_RX_ENABLE);

	if (ret)

		return ret;



	/* enable TX and keep register reset default values else */

	return lan9303_write_switch_reg(chip, LAN9303_MAC_TX_CFG_OFFS + port,

	return lan9303_write_switch_port(chip, port, LAN9303_MAC_TX_CFG_0,

				LAN9303_MAC_TX_CFG_X_TX_IFG_CONFIG_DEFAULT |

				LAN9303_MAC_TX_CFG_X_TX_PAD_ENABLE |

				LAN9303_MAC_TX_CFG_X_TX_ENABLE);
@@ -556,15 +567,16 @@ static int lan9303_handle_reset(struct lan9303 *chip) 
/* stop processing packets for all ports */

static int lan9303_disable_processing(struct lan9303 *chip)

{

	int ret;

	int p;



	for (p = 0; p < LAN9303_NUM_PORTS; p++) {

		int ret = lan9303_disable_processing_port(chip, p);



	ret = lan9303_disable_packet_processing(chip, LAN9303_PORT_0_OFFSET);

	if (ret)

		return ret;

	ret = lan9303_disable_packet_processing(chip, LAN9303_PORT_1_OFFSET);

		if (ret)

			return ret;

	return lan9303_disable_packet_processing(chip, LAN9303_PORT_2_OFFSET);

	}



	return 0;

}



static int lan9303_check_device(struct lan9303 *chip)
@@ -634,7 +646,7 @@ static int lan9303_setup(struct dsa_switch *ds) 
	if (ret)

		dev_err(chip->dev, "failed to separate ports %d\n", ret);



	ret = lan9303_enable_packet_processing(chip, LAN9303_PORT_0_OFFSET);

	ret = lan9303_enable_processing_port(chip, 0);

	if (ret)

		dev_err(chip->dev, "failed to re-enable switching %d\n", ret);
@@ -700,19 +712,18 @@ static void lan9303_get_ethtool_stats(struct dsa_switch *ds, int port, 
				      uint64_t *data)

{

	struct lan9303 *chip = ds->priv;

	unsigned int u;



	for (u = 0; u < ARRAY_SIZE(lan9303_mib); u++) {

		u32 reg;

	unsigned int u, poff;

		int ret;



	poff = port * 0x400;

		ret = lan9303_read_switch_port(

			chip, port, lan9303_mib[u].offset, &reg);



	for (u = 0; u < ARRAY_SIZE(lan9303_mib); u++) {

		ret = lan9303_read_switch_reg(chip,

					      lan9303_mib[u].offset + poff,

					      &reg);

		if (ret)

			dev_warn(chip->dev, "Reading status reg %u failed\n",

				 lan9303_mib[u].offset + poff);

			dev_warn(chip->dev, "Reading status port %d reg %u failed\n",

				 port, lan9303_mib[u].offset);

		data[u] = reg;

	}

}
@@ -757,11 +768,8 @@ static int lan9303_port_enable(struct dsa_switch *ds, int port, 
	/* enable internal packet processing */

	switch (port) {

	case 1:

		return lan9303_enable_packet_processing(chip,

							LAN9303_PORT_1_OFFSET);

	case 2:

		return lan9303_enable_packet_processing(chip,

							LAN9303_PORT_2_OFFSET);

		return lan9303_enable_processing_port(chip, port);

	default:

		dev_dbg(chip->dev,

			"Error: request to power up invalid port %d\n", port);
@@ -778,13 +786,9 @@ static void lan9303_port_disable(struct dsa_switch *ds, int port, 
	/* disable internal packet processing */

	switch (port) {

	case 1:

		lan9303_disable_packet_processing(chip, LAN9303_PORT_1_OFFSET);

		lan9303_phy_write(ds, chip->phy_addr_sel_strap + 1,

				  MII_BMCR, BMCR_PDOWN);

		break;

	case 2:

		lan9303_disable_packet_processing(chip, LAN9303_PORT_2_OFFSET);

		lan9303_phy_write(ds, chip->phy_addr_sel_strap + 2,

		lan9303_disable_processing_port(chip, port);

		lan9303_phy_write(ds, chip->phy_addr_sel_strap + port,

				  MII_BMCR, BMCR_PDOWN);

		break;

	default:

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