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>
diff --git a/drivers/net/bfin_mac.h b/drivers/net/bfin_mac.h
new file mode 100644
index 0000000..af87189
--- /dev/null
+++ b/drivers/net/bfin_mac.h
@@ -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);