summaryrefslogtreecommitdiffstats
path: root/drivers/net/ethernet/xscale/ixp2000/caleb.c
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2011-10-25 13:25:22 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2011-10-25 13:25:22 +0200
commit8a9ea3237e7eb5c25f09e429ad242ae5a3d5ea22 (patch)
treea0a63398a9983667d52cbbbf4e2405b4f22b1d83 /drivers/net/ethernet/xscale/ixp2000/caleb.c
parent1be025d3cb40cd295123af2c394f7229ef9b30ca (diff)
parent8b3408f8ee994973869d8ba32c5bf482bc4ddca4 (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1745 commits) dp83640: free packet queues on remove dp83640: use proper function to free transmit time stamping packets ipv6: Do not use routes from locally generated RAs |PATCH net-next] tg3: add tx_dropped counter be2net: don't create multiple RX/TX rings in multi channel mode be2net: don't create multiple TXQs in BE2 be2net: refactor VF setup/teardown code into be_vf_setup/clear() be2net: add vlan/rx-mode/flow-control config to be_setup() net_sched: cls_flow: use skb_header_pointer() ipv4: avoid useless call of the function check_peer_pmtu TCP: remove TCP_DEBUG net: Fix driver name for mdio-gpio.c ipv4: tcp: fix TOS value in ACK messages sent from TIME_WAIT rtnetlink: Add missing manual netlink notification in dev_change_net_namespaces ipv4: fix ipsec forward performance regression jme: fix irq storm after suspend/resume route: fix ICMP redirect validation net: hold sock reference while processing tx timestamps tcp: md5: add more const attributes Add ethtool -g support to virtio_net ... Fix up conflicts in: - drivers/net/Kconfig: The split-up generated a trivial conflict with removal of a stale reference to Documentation/networking/net-modules.txt. Remove it from the new location instead. - fs/sysfs/dir.c: Fairly nasty conflicts with the sysfs rb-tree usage, conflicting with Eric Biederman's changes for tagged directories.
Diffstat (limited to 'drivers/net/ethernet/xscale/ixp2000/caleb.c')
-rw-r--r--drivers/net/ethernet/xscale/ixp2000/caleb.c136
1 files changed, 136 insertions, 0 deletions
diff --git a/drivers/net/ethernet/xscale/ixp2000/caleb.c b/drivers/net/ethernet/xscale/ixp2000/caleb.c
new file mode 100644
index 00000000000..7dea5b95012
--- /dev/null
+++ b/drivers/net/ethernet/xscale/ixp2000/caleb.c
@@ -0,0 +1,136 @@
+/*
+ * Helper functions for the SPI-3 bridge FPGA on the Radisys ENP2611
+ * Copyright (C) 2004, 2005 Lennert Buytenhek <buytenh@wantstofly.org>
+ * Dedicated to Marija Kulikova.
+ *
+ * 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 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <asm/io.h>
+#include "caleb.h"
+
+#define CALEB_IDLO 0x00
+#define CALEB_IDHI 0x01
+#define CALEB_RID 0x02
+#define CALEB_RESET 0x03
+#define CALEB_INTREN0 0x04
+#define CALEB_INTREN1 0x05
+#define CALEB_INTRSTAT0 0x06
+#define CALEB_INTRSTAT1 0x07
+#define CALEB_PORTEN 0x08
+#define CALEB_BURST 0x09
+#define CALEB_PORTPAUS 0x0A
+#define CALEB_PORTPAUSD 0x0B
+#define CALEB_PHY0RX 0x10
+#define CALEB_PHY1RX 0x11
+#define CALEB_PHY0TX 0x12
+#define CALEB_PHY1TX 0x13
+#define CALEB_IXPRX_HI_CNTR 0x15
+#define CALEB_PHY0RX_HI_CNTR 0x16
+#define CALEB_PHY1RX_HI_CNTR 0x17
+#define CALEB_IXPRX_CNTR 0x18
+#define CALEB_PHY0RX_CNTR 0x19
+#define CALEB_PHY1RX_CNTR 0x1A
+#define CALEB_IXPTX_CNTR 0x1B
+#define CALEB_PHY0TX_CNTR 0x1C
+#define CALEB_PHY1TX_CNTR 0x1D
+#define CALEB_DEBUG0 0x1E
+#define CALEB_DEBUG1 0x1F
+
+
+static u8 caleb_reg_read(int reg)
+{
+ u8 value;
+
+ value = *((volatile u8 *)(ENP2611_CALEB_VIRT_BASE + reg));
+
+// printk(KERN_INFO "caleb_reg_read(%d) = %.2x\n", reg, value);
+
+ return value;
+}
+
+static void caleb_reg_write(int reg, u8 value)
+{
+ u8 dummy;
+
+// printk(KERN_INFO "caleb_reg_write(%d, %.2x)\n", reg, value);
+
+ *((volatile u8 *)(ENP2611_CALEB_VIRT_BASE + reg)) = value;
+
+ dummy = *((volatile u8 *)ENP2611_CALEB_VIRT_BASE);
+ __asm__ __volatile__("mov %0, %0" : "+r" (dummy));
+}
+
+
+void caleb_reset(void)
+{
+ /*
+ * Perform a chip reset.
+ */
+ caleb_reg_write(CALEB_RESET, 0x02);
+ udelay(1);
+
+ /*
+ * Enable all interrupt sources. This is needed to get
+ * meaningful results out of the status bits (register 6
+ * and 7.)
+ */
+ caleb_reg_write(CALEB_INTREN0, 0xff);
+ caleb_reg_write(CALEB_INTREN1, 0x07);
+
+ /*
+ * Set RX and TX FIFO thresholds to 1.5kb.
+ */
+ caleb_reg_write(CALEB_PHY0RX, 0x11);
+ caleb_reg_write(CALEB_PHY1RX, 0x11);
+ caleb_reg_write(CALEB_PHY0TX, 0x11);
+ caleb_reg_write(CALEB_PHY1TX, 0x11);
+
+ /*
+ * Program SPI-3 burst size.
+ */
+ caleb_reg_write(CALEB_BURST, 0); // 64-byte RBUF mpackets
+// caleb_reg_write(CALEB_BURST, 1); // 128-byte RBUF mpackets
+// caleb_reg_write(CALEB_BURST, 2); // 256-byte RBUF mpackets
+}
+
+void caleb_enable_rx(int port)
+{
+ u8 temp;
+
+ temp = caleb_reg_read(CALEB_PORTEN);
+ temp |= 1 << port;
+ caleb_reg_write(CALEB_PORTEN, temp);
+}
+
+void caleb_disable_rx(int port)
+{
+ u8 temp;
+
+ temp = caleb_reg_read(CALEB_PORTEN);
+ temp &= ~(1 << port);
+ caleb_reg_write(CALEB_PORTEN, temp);
+}
+
+void caleb_enable_tx(int port)
+{
+ u8 temp;
+
+ temp = caleb_reg_read(CALEB_PORTEN);
+ temp |= 1 << (port + 4);
+ caleb_reg_write(CALEB_PORTEN, temp);
+}
+
+void caleb_disable_tx(int port)
+{
+ u8 temp;
+
+ temp = caleb_reg_read(CALEB_PORTEN);
+ temp &= ~(1 << (port + 4));
+ caleb_reg_write(CALEB_PORTEN, temp);
+}