Commit e190d6b1 authored by Bryan Wu's avatar Bryan Wu Committed by Jeff Garzik
Browse files

Blackfin ethernet driver: on chip ethernet MAC controller driver 



This patch implements the driver necessary use the Analog Devices
Blackfin processor's on-chip ethernet MAC controller.

[try#2]
 - add timeout control
 - kill dma_config_reg bitfields
 - some trivial cleanup

[try#3]
 - add endianess check
 - add DRV_NAME, DRV_VERSION... driver information string
 - add some comments for silicon anomaly and dma API confusion
 - some code trivial cleanup

[try#4]
 - add Blackfin latest GPIO pin mux opertion with Michael Hennerich's
  help and Dan's review
 - rewrite the DMA descriptor list operation in a more readable way
  by Joe's review

[try#5]
 - cleanup some coding style by Joe's review.

[try#6]
 - 1.1 version fix a bug when set up multicast list pointed by Mr. yoshfuji
 - rearrange the desc_list_free function.

Signed-off-by: default avatarMichael Hennerich <michael.hennerich@analog.com>
Signed-off-by: default avatarBryan Wu <bryan.wu@analog.com>
Cc: Michael Buesch <mb@bu3sch.de>
Cc: Mike Frysinger <vapier.adi@gmail.com>
Cc: Jeff Garzik <jeff@garzik.org>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Dan Williams <dcbw@redhat.com>
Cc: Joe Perches <joe@perches.com>
Cc: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarJeff Garzik <jeff@garzik.org>
parent 308a9068

MAINTAINERS

+7 −0
Original line number Diff line number Diff line
@@ -732,6 +732,13 @@ L: uclinux-dist-devel@blackfin.uclinux.org (subscribers-only) 
W:	http://blackfin.uclinux.org

S:	Supported



BLACKFIN EMAC DRIVER

P:	Bryan Wu

M:	bryan.wu@analog.com

L:	uclinux-dist-devel@blackfin.uclinux.org (subscribers-only)

W:	http://blackfin.uclinux.org

S:	Supported



BLACKFIN RTC DRIVER

P:	Mike Frysinger

M:	michael.frysinger@analog.com

drivers/net/Kconfig

+44 −0
Original line number Diff line number Diff line
@@ -838,6 +838,50 @@ config ULTRA32 
	  <file:Documentation/networking/net-modules.txt>. The module

	  will be called smc-ultra32.



config BFIN_MAC

	tristate "Blackfin 536/537 on-chip mac support"

	depends on NET_ETHERNET && (BF537 || BF536) && (!BF537_PORT_H)

	select CRC32

	select BFIN_MAC_USE_L1 if DMA_UNCACHED_NONE

	help

	  This is the driver for blackfin on-chip mac device. Say Y if you want it

	  compiled into the kernel. This driver is also available as a module

	  ( = code which can be inserted in and removed from the running kernel

	  whenever you want). The module will be called bfin_mac.



config BFIN_MAC_USE_L1

	bool "Use L1 memory for rx/tx packets"

	depends on BFIN_MAC && BF537

	default y

	help

	  To get maximum network performace, you should use L1 memory as rx/tx buffers.

	  Say N here if you want to reserve L1 memory for other uses.



config BFIN_TX_DESC_NUM

	int "Number of transmit buffer packets"

	depends on BFIN_MAC

	range 6 10 if BFIN_MAC_USE_L1

	range 10 100

	default "10"

	help

	  Set the number of buffer packets used in driver.



config BFIN_RX_DESC_NUM

	int "Number of receive buffer packets"

	depends on BFIN_MAC

	range 20 100 if BFIN_MAC_USE_L1

	range 20 800

	default "20"

	help

	  Set the number of buffer packets used in driver.



config BFIN_MAC_RMII

	bool "RMII PHY Interface (EXPERIMENTAL)"

	depends on BFIN_MAC && EXPERIMENTAL

	default n

	help

	  Use Reduced PHY MII Interface



config SMC9194

	tristate "SMC 9194 support"

	depends on NET_VENDOR_SMC && (ISA || MAC && BROKEN)

drivers/net/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -200,6 +200,7 @@ obj-$(CONFIG_S2IO) += s2io.o 
obj-$(CONFIG_MYRI10GE) += myri10ge/

obj-$(CONFIG_SMC91X) += smc91x.o

obj-$(CONFIG_SMC911X) += smc911x.o

obj-$(CONFIG_BFIN_MAC) += bfin_mac.o

obj-$(CONFIG_DM9000) += dm9000.o

obj-$(CONFIG_FEC_8XX) += fec_8xx/

obj-$(CONFIG_PASEMI_MAC) += pasemi_mac.o

drivers/net/bfin_mac.c

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+1009 −0

File added.

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drivers/net/bfin_mac.h

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Original line number Diff line number Diff line 
/*

 * File:	drivers/net/bfin_mac.c

 * Based on:

 * Maintainer:

 * 		Bryan Wu <bryan.wu@analog.com>

 *

 * Original author:

 * 		Luke Yang <luke.yang@analog.com>

 *

 * Created:

 * Description:

 *

 * Modified:

 *		Copyright 2004-2006 Analog Devices Inc.

 *

 * Bugs:	Enter bugs at http://blackfin.uclinux.org/

 *

 * 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 Free Software Foundation ;  either version 2, or (at your option)

 * any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY ;  without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program ;  see the file COPYING.

 * If not, write to the Free Software Foundation,

 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

 */



/*

 * PHY REGISTER NAMES

 */

#define PHYREG_MODECTL		0x0000

#define PHYREG_MODESTAT		0x0001

#define PHYREG_PHYID1		0x0002

#define PHYREG_PHYID2		0x0003

#define PHYREG_ANAR		0x0004

#define PHYREG_ANLPAR		0x0005

#define PHYREG_ANER		0x0006

#define PHYREG_NSR		0x0010

#define PHYREG_LBREMR		0x0011

#define PHYREG_REC		0x0012

#define PHYREG_10CFG		0x0013

#define PHYREG_PHY1_1		0x0014

#define PHYREG_PHY1_2		0x0015

#define PHYREG_PHY2		0x0016

#define PHYREG_TW_1		0x0017

#define PHYREG_TW_2		0x0018

#define PHYREG_TEST		0x0019



#define PHY_RESET		0x8000

#define PHY_ANEG_EN		0x1000

#define PHY_DUPLEX		0x0100

#define PHY_SPD_SET		0x2000



#define BFIN_MAC_CSUM_OFFLOAD



struct dma_descriptor {

	struct dma_descriptor *next_dma_desc;

	unsigned long start_addr;

	unsigned short config;

	unsigned short x_count;

};



struct status_area_rx {

#if defined(BFIN_MAC_CSUM_OFFLOAD)

	unsigned short ip_hdr_csum;	/* ip header checksum */

	/* ip payload(udp or tcp or others) checksum */

	unsigned short ip_payload_csum;

#endif

	unsigned long status_word;	/* the frame status word */

};



struct status_area_tx {

	unsigned long status_word;	/* the frame status word */

};



/* use two descriptors for a packet */

struct net_dma_desc_rx {

	struct net_dma_desc_rx *next;

	struct sk_buff *skb;

	struct dma_descriptor desc_a;

	struct dma_descriptor desc_b;

	struct status_area_rx status;

};



/* use two descriptors for a packet */

struct net_dma_desc_tx {

	struct net_dma_desc_tx *next;

	struct sk_buff *skb;

	struct dma_descriptor desc_a;

	struct dma_descriptor desc_b;

	unsigned char packet[1560];

	struct status_area_tx status;

};



struct bf537mac_local {

	/*

	 * these are things that the kernel wants me to keep, so users

	 * can find out semi-useless statistics of how well the card is

	 * performing

	 */

	struct net_device_stats stats;



	int version;



	int FlowEnabled;	/* record if data flow is active */

	int EtherIntIVG;	/* IVG for the ethernet interrupt */

	int RXIVG;		/* IVG for the RX completion */

	int TXIVG;		/* IVG for the TX completion */

	int PhyAddr;		/* PHY address */

	int OpMode;		/* set these bits n the OPMODE regs */

	int Port10;		/* set port speed to 10 Mbit/s */

	int GenChksums;		/* IP checksums to be calculated */

	int NoRcveLnth;		/* dont insert recv length at start of buffer */

	int StripPads;		/* remove trailing pad bytes */

	int FullDuplex;		/* set full duplex mode */

	int Negotiate;		/* enable auto negotiation */

	int Loopback;		/* loopback at the PHY */

	int Cache;		/* Buffers may be cached */

	int FlowControl;	/* flow control active */

	int CLKIN;		/* clock in value in MHZ */

	unsigned short IntMask;	/* interrupt mask */

	unsigned char Mac[6];	/* MAC address of the board */

	spinlock_t lock;

};



extern void get_bf537_ether_addr(char *addr);

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