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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: 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
Jeff Garzik
parent
308a90683d
commit
e190d6b140
5 changed files with 1193 additions and 0 deletions
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@ -732,6 +732,13 @@ L: uclinux-dist-devel@blackfin.uclinux.org (subscribers-only)
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W: http://blackfin.uclinux.org
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S: Supported
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BLACKFIN EMAC DRIVER
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P: Bryan Wu
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M: bryan.wu@analog.com
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L: uclinux-dist-devel@blackfin.uclinux.org (subscribers-only)
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W: http://blackfin.uclinux.org
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S: Supported
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BLACKFIN RTC DRIVER
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P: Mike Frysinger
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M: michael.frysinger@analog.com
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@ -838,6 +838,50 @@ config ULTRA32
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<file:Documentation/networking/net-modules.txt>. The module
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will be called smc-ultra32.
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config BFIN_MAC
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tristate "Blackfin 536/537 on-chip mac support"
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depends on NET_ETHERNET && (BF537 || BF536) && (!BF537_PORT_H)
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select CRC32
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select BFIN_MAC_USE_L1 if DMA_UNCACHED_NONE
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help
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This is the driver for blackfin on-chip mac device. Say Y if you want it
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compiled into the kernel. This driver is also available as a module
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( = code which can be inserted in and removed from the running kernel
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whenever you want). The module will be called bfin_mac.
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config BFIN_MAC_USE_L1
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bool "Use L1 memory for rx/tx packets"
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depends on BFIN_MAC && BF537
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default y
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help
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To get maximum network performace, you should use L1 memory as rx/tx buffers.
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Say N here if you want to reserve L1 memory for other uses.
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config BFIN_TX_DESC_NUM
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int "Number of transmit buffer packets"
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depends on BFIN_MAC
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range 6 10 if BFIN_MAC_USE_L1
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range 10 100
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default "10"
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help
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Set the number of buffer packets used in driver.
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config BFIN_RX_DESC_NUM
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int "Number of receive buffer packets"
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depends on BFIN_MAC
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range 20 100 if BFIN_MAC_USE_L1
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range 20 800
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default "20"
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help
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Set the number of buffer packets used in driver.
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config BFIN_MAC_RMII
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bool "RMII PHY Interface (EXPERIMENTAL)"
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depends on BFIN_MAC && EXPERIMENTAL
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default n
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help
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Use Reduced PHY MII Interface
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config SMC9194
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tristate "SMC 9194 support"
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depends on NET_VENDOR_SMC && (ISA || MAC && BROKEN)
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@ -200,6 +200,7 @@ obj-$(CONFIG_S2IO) += s2io.o
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obj-$(CONFIG_MYRI10GE) += myri10ge/
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obj-$(CONFIG_SMC91X) += smc91x.o
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obj-$(CONFIG_SMC911X) += smc911x.o
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obj-$(CONFIG_BFIN_MAC) += bfin_mac.o
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obj-$(CONFIG_DM9000) += dm9000.o
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obj-$(CONFIG_FEC_8XX) += fec_8xx/
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obj-$(CONFIG_PASEMI_MAC) += pasemi_mac.o
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1009
drivers/net/bfin_mac.c
Normal file
1009
drivers/net/bfin_mac.c
Normal file
File diff suppressed because it is too large
Load diff
132
drivers/net/bfin_mac.h
Normal file
132
drivers/net/bfin_mac.h
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@ -0,0 +1,132 @@
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/*
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* File: drivers/net/bfin_mac.c
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* Based on:
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* Maintainer:
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* Bryan Wu <bryan.wu@analog.com>
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*
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* Original author:
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* Luke Yang <luke.yang@analog.com>
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*
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* Created:
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* Description:
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*
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* Modified:
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* Copyright 2004-2006 Analog Devices Inc.
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*
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* Bugs: Enter bugs at http://blackfin.uclinux.org/
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*
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* This program is free software ; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation ; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY ; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program ; see the file COPYING.
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* If not, write to the Free Software Foundation,
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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/*
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* PHY REGISTER NAMES
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*/
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#define PHYREG_MODECTL 0x0000
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#define PHYREG_MODESTAT 0x0001
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#define PHYREG_PHYID1 0x0002
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#define PHYREG_PHYID2 0x0003
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#define PHYREG_ANAR 0x0004
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#define PHYREG_ANLPAR 0x0005
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#define PHYREG_ANER 0x0006
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#define PHYREG_NSR 0x0010
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#define PHYREG_LBREMR 0x0011
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#define PHYREG_REC 0x0012
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#define PHYREG_10CFG 0x0013
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#define PHYREG_PHY1_1 0x0014
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#define PHYREG_PHY1_2 0x0015
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#define PHYREG_PHY2 0x0016
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#define PHYREG_TW_1 0x0017
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#define PHYREG_TW_2 0x0018
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#define PHYREG_TEST 0x0019
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#define PHY_RESET 0x8000
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#define PHY_ANEG_EN 0x1000
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#define PHY_DUPLEX 0x0100
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#define PHY_SPD_SET 0x2000
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#define BFIN_MAC_CSUM_OFFLOAD
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struct dma_descriptor {
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struct dma_descriptor *next_dma_desc;
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unsigned long start_addr;
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unsigned short config;
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unsigned short x_count;
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};
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struct status_area_rx {
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#if defined(BFIN_MAC_CSUM_OFFLOAD)
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unsigned short ip_hdr_csum; /* ip header checksum */
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/* ip payload(udp or tcp or others) checksum */
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unsigned short ip_payload_csum;
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#endif
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unsigned long status_word; /* the frame status word */
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};
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struct status_area_tx {
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unsigned long status_word; /* the frame status word */
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};
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/* use two descriptors for a packet */
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struct net_dma_desc_rx {
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struct net_dma_desc_rx *next;
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struct sk_buff *skb;
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struct dma_descriptor desc_a;
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struct dma_descriptor desc_b;
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struct status_area_rx status;
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};
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/* use two descriptors for a packet */
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struct net_dma_desc_tx {
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struct net_dma_desc_tx *next;
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struct sk_buff *skb;
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struct dma_descriptor desc_a;
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struct dma_descriptor desc_b;
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unsigned char packet[1560];
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struct status_area_tx status;
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};
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struct bf537mac_local {
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/*
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* these are things that the kernel wants me to keep, so users
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* can find out semi-useless statistics of how well the card is
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* performing
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*/
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struct net_device_stats stats;
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int version;
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int FlowEnabled; /* record if data flow is active */
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int EtherIntIVG; /* IVG for the ethernet interrupt */
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int RXIVG; /* IVG for the RX completion */
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int TXIVG; /* IVG for the TX completion */
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int PhyAddr; /* PHY address */
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int OpMode; /* set these bits n the OPMODE regs */
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int Port10; /* set port speed to 10 Mbit/s */
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int GenChksums; /* IP checksums to be calculated */
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int NoRcveLnth; /* dont insert recv length at start of buffer */
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int StripPads; /* remove trailing pad bytes */
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int FullDuplex; /* set full duplex mode */
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int Negotiate; /* enable auto negotiation */
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int Loopback; /* loopback at the PHY */
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int Cache; /* Buffers may be cached */
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int FlowControl; /* flow control active */
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int CLKIN; /* clock in value in MHZ */
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unsigned short IntMask; /* interrupt mask */
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unsigned char Mac[6]; /* MAC address of the board */
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spinlock_t lock;
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};
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extern void get_bf537_ether_addr(char *addr);
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