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Commit 81206ebc authored by David S. Miller's avatar David S. Miller
Browse files

Merge branch 'gianfar' 



Claudiu Manoil says:

====================
gianfar: Device configuration fixes

This patchset represents the first part of an effort
to solve some old device configuration issues in gianfar,
especially run-time reset and re-configuration problems.
I'm referring to "on-the-fly" configuration of registers
against HW specification, concurrency issues during device
reset / re-configuration operations, and implementing HW
advisories for these operations.

There's also a good deal of code cleanup and refactoring,
and some other (minor) fixes as well.

v2: Remove sysfs stubs w/o replacing them with module
    params (patch 2).
====================

Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parents c85fde83 7cca336a

Documentation/networking/gianfar.txt

+0 −30
Original line number Diff line number Diff line 
The Gianfar Ethernet Driver

Sysfs File description



Author: Andy Fleming <afleming@freescale.com>

Updated: 2005-07-28



SYSFS



Several of the features of the gianfar driver are controlled

through sysfs files.  These are:



bd_stash:

To stash RX Buffer Descriptors in the L2, echo 'on' or '1' to

bd_stash, echo 'off' or '0' to disable



rx_stash_len:

To stash the first n bytes of the packet in L2, echo the number

of bytes to buf_stash_len.  echo 0 to disable.



WARNING: You could really screw these up if you set them too low or high!

fifo_threshold:

To change the number of bytes the controller needs in the

fifo before it starts transmission, echo the number of bytes to 

fifo_thresh.  Range should be 0-511.



fifo_starve:

When the FIFO has less than this many bytes during a transmit, it

enters starve mode, and increases the priority of TX memory

transactions.  To change, echo the number of bytes to

fifo_starve.  Range should be 0-511.



fifo_starve_off:

Once in starve mode, the FIFO remains there until it has this

many bytes.  To change, echo the number of bytes to

fifo_starve_off.  Range should be 0-511.



CHECKSUM OFFLOADING

drivers/net/ethernet/freescale/Makefile

+1 −2
Original line number Diff line number Diff line
@@ -14,7 +14,6 @@ obj-$(CONFIG_FSL_XGMAC_MDIO) += xgmac_mdio.o 
obj-$(CONFIG_GIANFAR) += gianfar_driver.o

obj-$(CONFIG_PTP_1588_CLOCK_GIANFAR) += gianfar_ptp.o

gianfar_driver-objs := gianfar.o \

		gianfar_ethtool.o \

		gianfar_sysfs.o

		gianfar_ethtool.o

obj-$(CONFIG_UCC_GETH) += ucc_geth_driver.o

ucc_geth_driver-objs := ucc_geth.o ucc_geth_ethtool.o

drivers/net/ethernet/freescale/gianfar.c

+236 −264

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drivers/net/ethernet/freescale/gianfar.h

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Original line number Diff line number Diff line
@@ -9,7 +9,7 @@ 
 * Maintainer: Kumar Gala

 * Modifier: Sandeep Gopalpet <sandeep.kumar@freescale.com>

 *

 * Copyright 2002-2009, 2011 Freescale Semiconductor, Inc.

 * Copyright 2002-2009, 2011-2013 Freescale Semiconductor, Inc.

 *

 * This program is free software; you can redistribute  it and/or modify it

 * under  the terms of  the GNU General  Public License as published by the
@@ -880,7 +880,6 @@ struct gfar { 
#define FSL_GIANFAR_DEV_HAS_CSUM		0x00000010

#define FSL_GIANFAR_DEV_HAS_VLAN		0x00000020

#define FSL_GIANFAR_DEV_HAS_EXTENDED_HASH	0x00000040

#define FSL_GIANFAR_DEV_HAS_PADDING		0x00000080

#define FSL_GIANFAR_DEV_HAS_MAGIC_PACKET	0x00000100

#define FSL_GIANFAR_DEV_HAS_BD_STASHING		0x00000200

#define FSL_GIANFAR_DEV_HAS_BUF_STASHING	0x00000400
@@ -892,8 +891,8 @@ struct gfar { 
#define DEFAULT_MAPPING 	0xFF

#endif



#define ISRG_SHIFT_TX	0x10

#define ISRG_SHIFT_RX	0x18

#define ISRG_RR0	0x80000000

#define ISRG_TR0	0x00800000



/* The same driver can operate in two modes */

/* SQ_SG_MODE: Single Queue Single Group Mode
@@ -1113,6 +1112,9 @@ struct gfar_private { 
	unsigned int total_tx_ring_size;

	unsigned int total_rx_ring_size;



	u32 rqueue;

	u32 tqueue;



	/* RX per device parameters */

	unsigned int rx_stash_size;

	unsigned int rx_stash_index;
@@ -1127,11 +1129,6 @@ struct gfar_private { 
	u32 __iomem *hash_regs[16];

	int hash_width;



	/* global parameters */

	unsigned int fifo_threshold;

	unsigned int fifo_starve;

	unsigned int fifo_starve_off;



	/*Filer table*/

	unsigned int ftp_rqfpr[MAX_FILER_IDX + 1];

	unsigned int ftp_rqfcr[MAX_FILER_IDX + 1];
@@ -1176,6 +1173,31 @@ static inline void gfar_read_filer(struct gfar_private *priv, 
	*fpr = gfar_read(&regs->rqfpr);

}



static inline void gfar_write_isrg(struct gfar_private *priv)

{

	struct gfar __iomem *regs = priv->gfargrp[0].regs;

	u32 __iomem *baddr = &regs->isrg0;

	u32 isrg = 0;

	int grp_idx, i;



	for (grp_idx = 0; grp_idx < priv->num_grps; grp_idx++) {

		struct gfar_priv_grp *grp = &priv->gfargrp[grp_idx];



		for_each_set_bit(i, &grp->rx_bit_map, priv->num_rx_queues) {

			isrg |= (ISRG_RR0 >> i);

		}



		for_each_set_bit(i, &grp->tx_bit_map, priv->num_tx_queues) {

			isrg |= (ISRG_TR0 >> i);

		}



		gfar_write(baddr, isrg);



		baddr++;

		isrg = 0;

	}

}



void lock_rx_qs(struct gfar_private *priv);

void lock_tx_qs(struct gfar_private *priv);

void unlock_rx_qs(struct gfar_private *priv);
@@ -1183,11 +1205,11 @@ void unlock_tx_qs(struct gfar_private *priv); 
irqreturn_t gfar_receive(int irq, void *dev_id);

int startup_gfar(struct net_device *dev);

void stop_gfar(struct net_device *dev);

void gfar_halt(struct net_device *dev);

void gfar_halt(struct gfar_private *priv);

void gfar_start(struct gfar_private *priv);

void gfar_phy_test(struct mii_bus *bus, struct phy_device *phydev, int enable,

		   u32 regnum, u32 read);

void gfar_configure_coalescing_all(struct gfar_private *priv);

void gfar_init_sysfs(struct net_device *dev);

int gfar_set_features(struct net_device *dev, netdev_features_t features);

void gfar_check_rx_parser_mode(struct gfar_private *priv);

void gfar_vlan_mode(struct net_device *dev, netdev_features_t features);

drivers/net/ethernet/freescale/gianfar_ethtool.c

+8 −56

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