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Blackfin ethernet driver: on chip ethernet MAC controller driver

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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: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan 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: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Bryan Wu 2007-07-17 14:43:44 +08:00 committed by Jeff Garzik
parent 308a90683d
commit e190d6b140
5 changed files with 1193 additions and 0 deletions
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7
MAINTAINERS
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@ -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

44
drivers/net/Kconfig
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@ -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)

1
drivers/net/Makefile
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@ -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

1009
drivers/net/bfin_mac.c Normal file
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File diff suppressed because it is too large Load Diff

132
drivers/net/bfin_mac.h Normal file
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@ -0,0 +1,132 @@
/*
* 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);