diff options
Diffstat (limited to 'drivers/net/ixp2000')
| -rw-r--r-- | drivers/net/ixp2000/Kconfig | 6 | ||||
| -rw-r--r-- | drivers/net/ixp2000/Makefile | 3 | ||||
| -rw-r--r-- | drivers/net/ixp2000/caleb.c | 137 | ||||
| -rw-r--r-- | drivers/net/ixp2000/caleb.h | 22 | ||||
| -rw-r--r-- | drivers/net/ixp2000/enp2611.c | 245 | ||||
| -rw-r--r-- | drivers/net/ixp2000/ixp2400-msf.c | 213 | ||||
| -rw-r--r-- | drivers/net/ixp2000/ixp2400-msf.h | 115 | ||||
| -rw-r--r-- | drivers/net/ixp2000/ixp2400_rx.uc | 408 | ||||
| -rw-r--r-- | drivers/net/ixp2000/ixp2400_rx.ucode | 130 | ||||
| -rw-r--r-- | drivers/net/ixp2000/ixp2400_tx.uc | 272 | ||||
| -rw-r--r-- | drivers/net/ixp2000/ixp2400_tx.ucode | 98 | ||||
| -rw-r--r-- | drivers/net/ixp2000/ixpdev.c | 421 | ||||
| -rw-r--r-- | drivers/net/ixp2000/ixpdev.h | 27 | ||||
| -rw-r--r-- | drivers/net/ixp2000/ixpdev_priv.h | 57 | ||||
| -rw-r--r-- | drivers/net/ixp2000/pm3386.c | 334 | ||||
| -rw-r--r-- | drivers/net/ixp2000/pm3386.h | 28 |
16 files changed, 2516 insertions, 0 deletions
diff --git a/drivers/net/ixp2000/Kconfig b/drivers/net/ixp2000/Kconfig new file mode 100644 index 000000000000..2fec2415651f --- /dev/null +++ b/drivers/net/ixp2000/Kconfig @@ -0,0 +1,6 @@ +config ENP2611_MSF_NET + tristate "Radisys ENP2611 MSF network interface support" + depends on ARCH_ENP2611 + help + This is a driver for the MSF network interface unit in + the IXP2400 on the Radisys ENP2611 platform. diff --git a/drivers/net/ixp2000/Makefile b/drivers/net/ixp2000/Makefile new file mode 100644 index 000000000000..fd38351ceaa7 --- /dev/null +++ b/drivers/net/ixp2000/Makefile @@ -0,0 +1,3 @@ +obj-$(CONFIG_ENP2611_MSF_NET) += enp2611_mod.o + +enp2611_mod-objs := caleb.o enp2611.o ixp2400-msf.o ixpdev.o pm3386.o diff --git a/drivers/net/ixp2000/caleb.c b/drivers/net/ixp2000/caleb.c new file mode 100644 index 000000000000..3595e107df22 --- /dev/null +++ b/drivers/net/ixp2000/caleb.c @@ -0,0 +1,137 @@ +/* + * 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/config.h> +#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); +} diff --git a/drivers/net/ixp2000/caleb.h b/drivers/net/ixp2000/caleb.h new file mode 100644 index 000000000000..e93a1ef5b8a3 --- /dev/null +++ b/drivers/net/ixp2000/caleb.h @@ -0,0 +1,22 @@ +/* + * 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. + */ + +#ifndef __CALEB_H +#define __CALEB_H + +void caleb_reset(void); +void caleb_enable_rx(int port); +void caleb_disable_rx(int port); +void caleb_enable_tx(int port); +void caleb_disable_tx(int port); + + +#endif diff --git a/drivers/net/ixp2000/enp2611.c b/drivers/net/ixp2000/enp2611.c new file mode 100644 index 000000000000..d82651a97bae --- /dev/null +++ b/drivers/net/ixp2000/enp2611.c @@ -0,0 +1,245 @@ +/* + * IXP2400 MSF network device driver for 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/config.h> +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/init.h> +#include <linux/moduleparam.h> +#include <asm/arch/uengine.h> +#include <asm/mach-types.h> +#include <asm/io.h> +#include "ixpdev.h" +#include "caleb.h" +#include "ixp2400-msf.h" +#include "pm3386.h" + +/*********************************************************************** + * The Radisys ENP2611 is a PCI form factor board with three SFP GBIC + * slots, connected via two PMC/Sierra 3386s and an SPI-3 bridge FPGA + * to the IXP2400. + * + * +-------------+ + * SFP GBIC #0 ---+ | +---------+ + * | PM3386 #0 +-------+ | + * SFP GBIC #1 ---+ | | "Caleb" | +---------+ + * +-------------+ | | | | + * | SPI-3 +---------+ IXP2400 | + * +-------------+ | bridge | | | + * SFP GBIC #2 ---+ | | FPGA | +---------+ + * | PM3386 #1 +-------+ | + * | | +---------+ + * +-------------+ + * ^ ^ ^ + * | 1.25Gbaud | 104MHz | 104MHz + * | SERDES ea. | SPI-3 ea. | SPI-3 + * + ***********************************************************************/ +static struct ixp2400_msf_parameters enp2611_msf_parameters = +{ + .rx_mode = IXP2400_RX_MODE_UTOPIA_POS | + IXP2400_RX_MODE_1x32 | + IXP2400_RX_MODE_MPHY | + IXP2400_RX_MODE_MPHY_32 | + IXP2400_RX_MODE_MPHY_POLLED_STATUS | + IXP2400_RX_MODE_MPHY_LEVEL3 | + IXP2400_RX_MODE_RBUF_SIZE_64, + + .rxclk01_multiplier = IXP2400_PLL_MULTIPLIER_16, + + .rx_poll_ports = 3, + + .rx_channel_mode = { + IXP2400_PORT_RX_MODE_MASTER | + IXP2400_PORT_RX_MODE_POS_PHY | + IXP2400_PORT_RX_MODE_POS_PHY_L3 | + IXP2400_PORT_RX_MODE_ODD_PARITY | + IXP2400_PORT_RX_MODE_2_CYCLE_DECODE, + + IXP2400_PORT_RX_MODE_MASTER | + IXP2400_PORT_RX_MODE_POS_PHY | + IXP2400_PORT_RX_MODE_POS_PHY_L3 | + IXP2400_PORT_RX_MODE_ODD_PARITY | + IXP2400_PORT_RX_MODE_2_CYCLE_DECODE, + + IXP2400_PORT_RX_MODE_MASTER | + IXP2400_PORT_RX_MODE_POS_PHY | + IXP2400_PORT_RX_MODE_POS_PHY_L3 | + IXP2400_PORT_RX_MODE_ODD_PARITY | + IXP2400_PORT_RX_MODE_2_CYCLE_DECODE, + + IXP2400_PORT_RX_MODE_MASTER | + IXP2400_PORT_RX_MODE_POS_PHY | + IXP2400_PORT_RX_MODE_POS_PHY_L3 | + IXP2400_PORT_RX_MODE_ODD_PARITY | + IXP2400_PORT_RX_MODE_2_CYCLE_DECODE + }, + + .tx_mode = IXP2400_TX_MODE_UTOPIA_POS | + IXP2400_TX_MODE_1x32 | + IXP2400_TX_MODE_MPHY | + IXP2400_TX_MODE_MPHY_32 | + IXP2400_TX_MODE_MPHY_POLLED_STATUS | + IXP2400_TX_MODE_MPHY_LEVEL3 | + IXP2400_TX_MODE_TBUF_SIZE_64, + + .txclk01_multiplier = IXP2400_PLL_MULTIPLIER_16, + + .tx_poll_ports = 3, + + .tx_channel_mode = { + IXP2400_PORT_TX_MODE_MASTER | + IXP2400_PORT_TX_MODE_POS_PHY | + IXP2400_PORT_TX_MODE_ODD_PARITY | + IXP2400_PORT_TX_MODE_2_CYCLE_DECODE, + + IXP2400_PORT_TX_MODE_MASTER | + IXP2400_PORT_TX_MODE_POS_PHY | + IXP2400_PORT_TX_MODE_ODD_PARITY | + IXP2400_PORT_TX_MODE_2_CYCLE_DECODE, + + IXP2400_PORT_TX_MODE_MASTER | + IXP2400_PORT_TX_MODE_POS_PHY | + IXP2400_PORT_TX_MODE_ODD_PARITY | + IXP2400_PORT_TX_MODE_2_CYCLE_DECODE, + + IXP2400_PORT_TX_MODE_MASTER | + IXP2400_PORT_TX_MODE_POS_PHY | + IXP2400_PORT_TX_MODE_ODD_PARITY | + IXP2400_PORT_TX_MODE_2_CYCLE_DECODE + } +}; + +struct enp2611_ixpdev_priv +{ + struct ixpdev_priv ixpdev_priv; + struct net_device_stats stats; +}; + +static struct net_device *nds[3]; +static struct timer_list link_check_timer; + +static struct net_device_stats *enp2611_get_stats(struct net_device *dev) +{ + struct enp2611_ixpdev_priv *ip = netdev_priv(dev); + + pm3386_get_stats(ip->ixpdev_priv.channel, &(ip->stats)); + + return &(ip->stats); +} + +/* @@@ Poll the SFP moddef0 line too. */ +/* @@@ Try to use the pm3386 DOOL interrupt as well. */ +static void enp2611_check_link_status(unsigned long __dummy) +{ + int i; + + for (i = 0; i < 3; i++) { + struct net_device *dev; + int status; + + dev = nds[i]; + + status = pm3386_is_link_up(i); + if (status && !netif_carrier_ok(dev)) { + /* @@@ Should report autonegotiation status. */ + printk(KERN_INFO "%s: NIC Link is Up\n", dev->name); + + pm3386_enable_tx(i); + caleb_enable_tx(i); + netif_carrier_on(dev); + } else if (!status && netif_carrier_ok(dev)) { + printk(KERN_INFO "%s: NIC Link is Down\n", dev->name); + + netif_carrier_off(dev); + caleb_disable_tx(i); + pm3386_disable_tx(i); + } + } + + link_check_timer.expires = jiffies + HZ / 10; + add_timer(&link_check_timer); +} + +static void enp2611_set_port_admin_status(int port, int up) +{ + if (up) { + caleb_enable_rx(port); + + pm3386_set_carrier(port, 1); + pm3386_enable_rx(port); + } else { + caleb_disable_tx(port); + pm3386_disable_tx(port); + /* @@@ Flush out pending packets. */ + pm3386_set_carrier(port, 0); + + pm3386_disable_rx(port); + caleb_disable_rx(port); + } +} + +static int __init enp2611_init_module(void) +{ + int i; + + if (!machine_is_enp2611()) + return -ENODEV; + + caleb_reset(); + pm3386_reset(); + + for (i = 0; i < 3; i++) { + nds[i] = ixpdev_alloc(i, sizeof(struct enp2611_ixpdev_priv)); + if (nds[i] == NULL) { + while (--i >= 0) + free_netdev(nds[i]); + return -ENOMEM; + } + + SET_MODULE_OWNER(nds[i]); + nds[i]->get_stats = enp2611_get_stats; + pm3386_init_port(i); + pm3386_get_mac(i, nds[i]->dev_addr); + } + + ixp2400_msf_init(&enp2611_msf_parameters); + + if (ixpdev_init(3, nds, enp2611_set_port_admin_status)) { + for (i = 0; i < 3; i++) + free_netdev(nds[i]); + return -EINVAL; + } + + init_timer(&link_check_timer); + link_check_timer.function = enp2611_check_link_status; + link_check_timer.expires = jiffies; + add_timer(&link_check_timer); + + return 0; +} + +static void __exit enp2611_cleanup_module(void) +{ + int i; + + del_timer_sync(&link_check_timer); + + ixpdev_deinit(); + for (i = 0; i < 3; i++) + free_netdev(nds[i]); +} + +module_init(enp2611_init_module); +module_exit(enp2611_cleanup_module); +MODULE_LICENSE("GPL"); diff --git a/drivers/net/ixp2000/ixp2400-msf.c b/drivers/net/ixp2000/ixp2400-msf.c new file mode 100644 index 000000000000..48a3a891d3a4 --- /dev/null +++ b/drivers/net/ixp2000/ixp2400-msf.c @@ -0,0 +1,213 @@ +/* + * Generic library functions for the MSF (Media and Switch Fabric) unit + * found on the Intel IXP2400 network processor. + * + * 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 Lesser General Public License as + * published by the Free Software Foundation; either version 2.1 of the + * License, or (at your option) any later version. + */ + +#include <linux/config.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <asm/hardware.h> +#include <asm/arch/ixp2000-regs.h> +#include <asm/delay.h> +#include <asm/io.h> +#include "ixp2400-msf.h" + +/* + * This is the Intel recommended PLL init procedure as described on + * page 340 of the IXP2400/IXP2800 Programmer's Reference Manual. + */ +static void ixp2400_pll_init(struct ixp2400_msf_parameters *mp) +{ + int rx_dual_clock; + int tx_dual_clock; + u32 value; + + /* + * If the RX mode is not 1x32, we have to enable both RX PLLs + * (#0 and #1.) The same thing for the TX direction. + */ + rx_dual_clock = !!(mp->rx_mode & IXP2400_RX_MODE_WIDTH_MASK); + tx_dual_clock = !!(mp->tx_mode & IXP2400_TX_MODE_WIDTH_MASK); + + /* + * Read initial value. + */ + value = ixp2000_reg_read(IXP2000_MSF_CLK_CNTRL); + + /* + * Put PLLs in powerdown and bypass mode. + */ + value |= 0x0000f0f0; + ixp2000_reg_write(IXP2000_MSF_CLK_CNTRL, value); + + /* + * Set single or dual clock mode bits. + */ + value &= ~0x03000000; + value |= (rx_dual_clock << 24) | (tx_dual_clock << 25); + + /* + * Set multipliers. + */ + value &= ~0x00ff0000; + value |= mp->rxclk01_multiplier << 16; + value |= mp->rxclk23_multiplier << 18; + value |= mp->txclk01_multiplier << 20; + value |= mp->txclk23_multiplier << 22; + + /* + * And write value. + */ + ixp2000_reg_write(IXP2000_MSF_CLK_CNTRL, value); + + /* + * Disable PLL bypass mode. + */ + value &= ~(0x00005000 | rx_dual_clock << 13 | tx_dual_clock << 15); + ixp2000_reg_write(IXP2000_MSF_CLK_CNTRL, value); + + /* + * Turn on PLLs. + */ + value &= ~(0x00000050 | rx_dual_clock << 5 | tx_dual_clock << 7); + ixp2000_reg_write(IXP2000_MSF_CLK_CNTRL, value); + + /* + * Wait for PLLs to lock. There are lock status bits, but IXP2400 + * erratum #65 says that these lock bits should not be relied upon + * as they might not accurately reflect the true state of the PLLs. + */ + udelay(100); +} + +/* + * Needed according to p480 of Programmer's Reference Manual. + */ +static void ixp2400_msf_free_rbuf_entries(struct ixp2400_msf_parameters *mp) +{ + int size_bits; + int i; + + /* + * Work around IXP2400 erratum #69 (silent RBUF-to-DRAM transfer + * corruption) in the Intel-recommended way: do not add the RBUF + * elements susceptible to corruption to the freelist. + */ + size_bits = mp->rx_mode & IXP2400_RX_MODE_RBUF_SIZE_MASK; + if (size_bits == IXP2400_RX_MODE_RBUF_SIZE_64) { + for (i = 1; i < 128; i++) { + if (i == 9 || i == 18 || i == 27) + continue; + ixp2000_reg_write(IXP2000_MSF_RBUF_ELEMENT_DONE, i); + } + } else if (size_bits == IXP2400_RX_MODE_RBUF_SIZE_128) { + for (i = 1; i < 64; i++) { + if (i == 4 || i == 9 || i == 13) + continue; + ixp2000_reg_write(IXP2000_MSF_RBUF_ELEMENT_DONE, i); + } + } else if (size_bits == IXP2400_RX_MODE_RBUF_SIZE_256) { + for (i = 1; i < 32; i++) { + if (i == 2 || i == 4 || i == 6) + continue; + ixp2000_reg_write(IXP2000_MSF_RBUF_ELEMENT_DONE, i); + } + } +} + +static u32 ixp2400_msf_valid_channels(u32 reg) +{ + u32 channels; + + channels = 0; + switch (reg & IXP2400_RX_MODE_WIDTH_MASK) { + case IXP2400_RX_MODE_1x32: + channels = 0x1; + if (reg & IXP2400_RX_MODE_MPHY && + !(reg & IXP2400_RX_MODE_MPHY_32)) + channels = 0xf; + break; + + case IXP2400_RX_MODE_2x16: + channels = 0x5; + break; + + case IXP2400_RX_MODE_4x8: + channels = 0xf; + break; + + case IXP2400_RX_MODE_1x16_2x8: + channels = 0xd; + break; + } + + return channels; +} + +static void ixp2400_msf_enable_rx(struct ixp2400_msf_parameters *mp) +{ + u32 value; + + value = ixp2000_reg_read(IXP2000_MSF_RX_CONTROL) & 0x0fffffff; + value |= ixp2400_msf_valid_channels(mp->rx_mode) << 28; + ixp2000_reg_write(IXP2000_MSF_RX_CONTROL, value); +} + +static void ixp2400_msf_enable_tx(struct ixp2400_msf_parameters *mp) +{ + u32 value; + + value = ixp2000_reg_read(IXP2000_MSF_TX_CONTROL) & 0x0fffffff; + value |= ixp2400_msf_valid_channels(mp->tx_mode) << 28; + ixp2000_reg_write(IXP2000_MSF_TX_CONTROL, value); +} + + +void ixp2400_msf_init(struct ixp2400_msf_parameters *mp) +{ + u32 value; + int i; + + /* + * Init the RX/TX PLLs based on the passed parameter block. + */ + ixp2400_pll_init(mp); + + /* + * Reset MSF. Bit 7 in IXP_RESET_0 resets the MSF. + */ + value = ixp2000_reg_read(IXP2000_RESET0); + ixp2000_reg_write(IXP2000_RESET0, value | 0x80); + ixp2000_reg_write(IXP2000_RESET0, value & ~0x80); + + /* + * Initialise the RX section. + */ + ixp2000_reg_write(IXP2000_MSF_RX_MPHY_POLL_LIMIT, mp->rx_poll_ports - 1); + ixp2000_reg_write(IXP2000_MSF_RX_CONTROL, mp->rx_mode); + for (i = 0; i < 4; i++) { + ixp2000_reg_write(IXP2000_MSF_RX_UP_CONTROL_0 + i, + mp->rx_channel_mode[i]); + } + ixp2400_msf_free_rbuf_entries(mp); + ixp2400_msf_enable_rx(mp); + + /* + * Initialise the TX section. + */ + ixp2000_reg_write(IXP2000_MSF_TX_MPHY_POLL_LIMIT, mp->tx_poll_ports - 1); + ixp2000_reg_write(IXP2000_MSF_TX_CONTROL, mp->tx_mode); + for (i = 0; i < 4; i++) { + ixp2000_reg_write(IXP2000_MSF_TX_UP_CONTROL_0 + i, + mp->tx_channel_mode[i]); + } + ixp2400_msf_enable_tx(mp); +} diff --git a/drivers/net/ixp2000/ixp2400-msf.h b/drivers/net/ixp2000/ixp2400-msf.h new file mode 100644 index 000000000000..3ac1af2771da --- /dev/null +++ b/drivers/net/ixp2000/ixp2400-msf.h @@ -0,0 +1,115 @@ +/* + * Generic library functions for the MSF (Media and Switch Fabric) unit + * found on the Intel IXP2400 network processor. + * + * 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 Lesser General Public License as + * published by the Free Software Foundation; either version 2.1 of the + * License, or (at your option) any later version. + */ + +#ifndef __IXP2400_MSF_H +#define __IXP2400_MSF_H + +struct ixp2400_msf_parameters +{ + u32 rx_mode; + unsigned rxclk01_multiplier:2; + unsigned rxclk23_multiplier:2; + unsigned rx_poll_ports:6; + u32 rx_channel_mode[4]; + + u32 tx_mode; + unsigned txclk01_multiplier:2; + unsigned txclk23_multiplier:2; + unsigned tx_poll_ports:6; + u32 tx_channel_mode[4]; +}; + +void ixp2400_msf_init(struct ixp2400_msf_parameters *mp); + +#define IXP2400_PLL_MULTIPLIER_48 0x00 +#define IXP2400_PLL_MULTIPLIER_24 0x01 +#define IXP2400_PLL_MULTIPLIER_16 0x02 +#define IXP2400_PLL_MULTIPLIER_12 0x03 + +#define IXP2400_RX_MODE_CSIX 0x00400000 +#define IXP2400_RX_MODE_UTOPIA_POS 0x00000000 +#define IXP2400_RX_MODE_WIDTH_MASK 0x00300000 +#define IXP2400_RX_MODE_1x16_2x8 0x00300000 +#define IXP2400_RX_MODE_4x8 0x00200000 +#define IXP2400_RX_MODE_2x16 0x00100000 +#define IXP2400_RX_MODE_1x32 0x00000000 +#define IXP2400_RX_MODE_MPHY 0x00080000 +#define IXP2400_RX_MODE_SPHY 0x00000000 +#define IXP2400_RX_MODE_MPHY_32 0x00040000 +#define IXP2400_RX_MODE_MPHY_4 0x00000000 +#define IXP2400_RX_MODE_MPHY_POLLED_STATUS 0x00020000 +#define IXP2400_RX_MODE_MPHY_DIRECT_STATUS 0x00000000 +#define IXP2400_RX_MODE_CBUS_FULL_DUPLEX 0x00010000 +#define IXP2400_RX_MODE_CBUS_SIMPLEX 0x00000000 +#define IXP2400_RX_MODE_MPHY_LEVEL2 0x00004000 +#define IXP2400_RX_MODE_MPHY_LEVEL3 0x00000000 +#define IXP2400_RX_MODE_CBUS_8BIT 0x00002000 +#define IXP2400_RX_MODE_CBUS_4BIT 0x00000000 +#define IXP2400_RX_MODE_CSIX_SINGLE_FREELIST 0x00000200 +#define IXP2400_RX_MODE_CSIX_SPLIT_FREELISTS 0x00000000 +#define IXP2400_RX_MODE_RBUF_SIZE_MASK 0x0000000c +#define IXP2400_RX_MODE_RBUF_SIZE_256 0x00000008 +#define IXP2400_RX_MODE_RBUF_SIZE_128 0x00000004 +#define IXP2400_RX_MODE_RBUF_SIZE_64 0x00000000 + +#define IXP2400_PORT_RX_MODE_SLAVE 0x00000040 +#define IXP2400_PORT_RX_MODE_MASTER 0x00000000 +#define IXP2400_PORT_RX_MODE_POS_PHY_L3 0x00000020 +#define IXP2400_PORT_RX_MODE_POS_PHY_L2 0x00000000 +#define IXP2400_PORT_RX_MODE_POS_PHY 0x00000010 +#define IXP2400_PORT_RX_MODE_UTOPIA 0x00000000 +#define IXP2400_PORT_RX_MODE_EVEN_PARITY 0x0000000c +#define IXP2400_PORT_RX_MODE_ODD_PARITY 0x00000008 +#define IXP2400_PORT_RX_MODE_NO_PARITY 0x00000000 +#define IXP2400_PORT_RX_MODE_UTOPIA_BIG_CELLS 0x00000002 +#define IXP2400_PORT_RX_MODE_UTOPIA_NORMAL_CELLS 0x00000000 +#define IXP2400_PORT_RX_MODE_2_CYCLE_DECODE 0x00000001 +#define IXP2400_PORT_RX_MODE_1_CYCLE_DECODE 0x00000000 + +#define IXP2400_TX_MODE_CSIX 0x00400000 +#define IXP2400_TX_MODE_UTOPIA_POS 0x00000000 +#define IXP2400_TX_MODE_WIDTH_MASK 0x00300000 +#define IXP2400_TX_MODE_1x16_2x8 0x00300000 +#define IXP2400_TX_MODE_4x8 0x00200000 +#define IXP2400_TX_MODE_2x16 0x00100000 +#define IXP2400_TX_MODE_1x32 0x00000000 +#define IXP2400_TX_MODE_MPHY 0x00080000 +#define IXP2400_TX_MODE_SPHY 0x00000000 +#define IXP2400_TX_MODE_MPHY_32 0x00040000 +#define IXP2400_TX_MODE_MPHY_4 0x00000000 +#define IXP2400_TX_MODE_MPHY_POLLED_STATUS 0x00020000 +#define IXP2400_TX_MODE_MPHY_DIRECT_STATUS 0x00000000 +#define IXP2400_TX_MODE_CBUS_FULL_DUPLEX 0x00010000 +#define IXP2400_TX_MODE_CBUS_SIMPLEX 0x00000000 +#define IXP2400_TX_MODE_MPHY_LEVEL2 0x00004000 +#define IXP2400_TX_MODE_MPHY_LEVEL3 0x00000000 +#define IXP2400_TX_MODE_CBUS_8BIT 0x00002000 +#define IXP2400_TX_MODE_CBUS_4BIT 0x00000000 +#define IXP2400_TX_MODE_TBUF_SIZE_MASK 0x0000000c +#define IXP2400_TX_MODE_TBUF_SIZE_256 0x00000008 +#define IXP2400_TX_MODE_TBUF_SIZE_128 0x00000004 +#define IXP2400_TX_MODE_TBUF_SIZE_64 0x00000000 + +#define IXP2400_PORT_TX_MODE_SLAVE 0x00000040 +#define IXP2400_PORT_TX_MODE_MASTER 0x00000000 +#define IXP2400_PORT_TX_MODE_POS_PHY 0x00000010 +#define IXP2400_PORT_TX_MODE_UTOPIA 0x00000000 +#define IXP2400_PORT_TX_MODE_EVEN_PARITY 0x0000000c +#define IXP2400_PORT_TX_MODE_ODD_PARITY 0x00000008 +#define IXP2400_PORT_TX_MODE_NO_PARITY 0x00000000 +#define IXP2400_PORT_TX_MODE_UTOPIA_BIG_CELLS 0x00000002 +#define IXP2400_PORT_TX_MODE_2_CYCLE_DECODE 0x00000001 +#define IXP2400_PORT_TX_MODE_1_CYCLE_DECODE 0x00000000 + + +#endif diff --git a/drivers/net/ixp2000/ixp2400_rx.uc b/drivers/net/ixp2000/ixp2400_rx.uc new file mode 100644 index 000000000000..42a73e357afa --- /dev/null +++ b/drivers/net/ixp2000/ixp2400_rx.uc @@ -0,0 +1,408 @@ +/* + * RX ucode for the Intel IXP2400 in POS-PHY mode. + * Copyright (C) 2004, 2005 Lennert Buytenhek + * 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. + * + * Assumptions made in this code: + * - The IXP2400 MSF is configured for POS-PHY mode, in a mode where + * only one full element list is used. This includes, for example, + * 1x32 SPHY and 1x32 MPHY32, but not 4x8 SPHY or 1x32 MPHY4. (This + * is not an exhaustive list.) + * - The RBUF uses 64-byte mpackets. + * - RX descriptors reside in SRAM, and have the following format: + * struct rx_desc + * { + * // to uengine + * u32 buf_phys_addr; + * u32 buf_length; + * + * // from uengine + * u32 channel; + * u32 pkt_length; + * }; + * - Packet data resides in DRAM. + * - Packet buffer addresses are 8-byte aligned. + * - Scratch ring 0 is rx_pending. + * - Scratch ring 1 is rx_done, and has status condition 'full'. + * - The host triggers rx_done flush and rx_pending refill on seeing INTA. + * - This code is run on all eight threads of the microengine it runs on. + * + * Local memory is used for per-channel RX state. + */ + +#define RX_THREAD_FREELIST_0 0x0030 +#define RBUF_ELEMENT_DONE 0x0044 + +#define CHANNEL_FLAGS *l$index0[0] +#define CHANNEL_FLAG_RECEIVING 1 +#define PACKET_LENGTH *l$index0[1] +#define PACKET_CHECKSUM *l$index0[2] +#define BUFFER_HANDLE *l$index0[3] +#define BUFFER_START *l$index0[4] +#define BUFFER_LENGTH *l$index0[5] + +#define CHANNEL_STATE_SIZE 24 // in bytes +#define CHANNEL_STATE_SHIFT 5 // ceil(log2(state size)) + + + .sig volatile sig1 + .sig volatile sig2 + .sig volatile sig3 + + .sig mpacket_arrived + .reg add_to_rx_freelist + .reg read $rsw0, $rsw1 + .xfer_order $rsw0 $rsw1 + + .reg zero + + /* + * Initialise add_to_rx_freelist. + */ + .begin + .reg temp + .reg temp2 + + immed[add_to_rx_freelist, RX_THREAD_FREELIST_0] + immed_w1[add_to_rx_freelist, (&$rsw0 | (&mpacket_arrived << 12))] + + local_csr_rd[ACTIVE_CTX_STS] + immed[temp, 0] + alu[temp2, temp, and, 0x1f] + alu_shf[add_to_rx_freelist, add_to_rx_freelist, or, temp2, <<20] + alu[temp2, temp, and, 0x80] + alu_shf[add_to_rx_freelist, add_to_rx_freelist, or, temp2, <<18] + .end + + immed[zero, 0] + + /* + * Skip context 0 initialisation? + */ + .begin + br!=ctx[0, mpacket_receive_loop#] + .end + + /* + * Initialise local memory. + */ + .begin + .reg addr + .reg temp + + immed[temp, 0] + init_local_mem_loop#: + alu_shf[addr, --, b, temp, <<CHANNEL_STATE_SHIFT] + local_csr_wr[ACTIVE_LM_ADDR_0, addr] + nop + nop + nop + + immed[CHANNEL_FLAGS, 0] + + alu[temp, temp, +, 1] + alu[--, temp, and, 0x20] + beq[init_local_mem_loop#] + .end + + /* + * Initialise signal pipeline. + */ + .begin + local_csr_wr[SAME_ME_SIGNAL, (&sig1 << 3)] + .set_sig sig1 + + local_csr_wr[SAME_ME_SIGNAL, (&sig2 << 3)] + .set_sig sig2 + + local_csr_wr[SAME_ME_SIGNAL, (&sig3 << 3)] + .set_sig sig3 + .end + +mpacket_receive_loop#: + /* + * Synchronise and wait for mpacket. + */ + .begin + ctx_arb[sig1] + local_csr_wr[SAME_ME_SIGNAL, (0x80 | (&sig1 << 3))] + + msf[fast_wr, --, add_to_rx_freelist, 0] + .set_sig mpacket_arrived + ctx_arb[mpacket_arrived] + .set $rsw0 $rsw1 + .end + + /* + * We halt if we see {inbparerr,parerr,null,soperror}. + */ + .begin + alu_shf[--, 0x1b, and, $rsw0, >>8] + bne[abort_rswerr#] + .end + + /* + * Point local memory pointer to this channel's state area. + */ + .begin + .reg chanaddr + + alu[chanaddr, $rsw0, and, 0x1f] + alu_shf[chanaddr, --, b, chanaddr, <<CHANNEL_STATE_SHIFT] + local_csr_wr[ACTIVE_LM_ADDR_0, chanaddr] + nop + nop + nop + .end + + /* + * Check whether we received a SOP mpacket while we were already + * working on a packet, or a non-SOP mpacket while there was no + * packet pending. (SOP == RECEIVING -> abort) If everything's + * okay, update the RECEIVING flag to reflect our new state. + */ + .begin + .reg temp + .reg eop + + #if CHANNEL_FLAG_RECEIVING != 1 + #error CHANNEL_FLAG_RECEIVING is not 1 + #endif + + alu_shf[temp, 1, and, $rsw0, >>15] + alu[temp, temp, xor, CHANNEL_FLAGS] + alu[--, temp, and, CHANNEL_FLAG_RECEIVING] + beq[abort_proterr#] + + alu_shf[eop, 1, and, $rsw0, >>14] + alu[CHANNEL_FLAGS, temp, xor, eop] + .end + + /* + * Copy the mpacket into the right spot, and in case of EOP, + * write back the descriptor and pass the packet on. + */ + .begin + .reg buffer_offset + .reg _packet_length + .reg _packet_checksum + .reg _buffer_handle + .reg _buffer_start + .reg _buffer_length + + /* + * Determine buffer_offset, _packet_length and + * _packet_checksum. + */ + .begin + .reg temp + + alu[--, 1, and, $rsw0, >>15] + beq[not_sop#] + + immed[PACKET_LENGTH, 0] + immed[PACKET_CHECKSUM, 0] + + not_sop#: + alu[buffer_offset, --, b, PACKET_LENGTH] + alu_shf[temp, 0xff, and, $rsw0, >>16] + alu[_packet_length, buffer_offset, +, temp] + alu[PACKET_LENGTH, --, b, _packet_length] + + immed[temp, 0xffff] + alu[temp, $rsw1, and, temp] + alu[_packet_checksum, PACKET_CHECKSUM, +, temp] + alu[PACKET_CHECKSUM, --, b, _packet_checksum] + .end + + /* + * Allocate buffer in case of SOP. + */ + .begin + .reg temp + + alu[temp, 1, and, $rsw0, >>15] + beq[skip_buffer_alloc#] + + .begin + .sig zzz + .reg read $stemp $stemp2 + .xfer_order $stemp $stemp2 + + rx_nobufs#: + scratch[get, $stemp, zero, 0, 1], ctx_swap[zzz] + alu[_buffer_handle, --, b, $stemp] + beq[rx_nobufs#] + + sram[read, $stemp, _buffer_handle, 0, 2], + ctx_swap[zzz] + alu[_buffer_start, --, b, $stemp] + alu[_buffer_length, --, b, $stemp2] + .end + + skip_buffer_alloc#: + .end + + /* + * Resynchronise. + */ + .begin + ctx_arb[sig2] + local_csr_wr[SAME_ME_SIGNAL, (0x80 | (&sig2 << 3))] + .end + + /* + * Synchronise buffer state. + */ + .begin + .reg temp + + alu[temp, 1, and, $rsw0, >>15] + beq[copy_from_local_mem#] + + alu[BUFFER_HANDLE, --, b, _buffer_handle] + alu[BUFFER_START, --, b, _buffer_start] + alu[BUFFER_LENGTH, --, b, _buffer_length] + br[sync_state_done#] + + copy_from_local_mem#: + alu[_buffer_handle, --, b, BUFFER_HANDLE] + alu[_buffer_start, --, b, BUFFER_START] + alu[_buffer_length, --, b, BUFFER_LENGTH] + + sync_state_done#: + .end + +#if 0 + /* + * Debug buffer state management. + */ + .begin + .reg temp + + alu[temp, 1, and, $rsw0, >>14] + beq[no_poison#] + immed[BUFFER_HANDLE, 0xdead] + immed[BUFFER_START, 0xdead] + immed[BUFFER_LENGTH, 0xdead] + no_poison#: + + immed[temp, 0xdead] + alu[--, _buffer_handle, -, temp] + beq[state_corrupted#] + alu[--, _buffer_start, -, temp] + beq[state_corrupted#] + alu[--, _buffer_length, -, temp] + beq[state_corrupted#] + .end +#endif + + /* + * Check buffer length. + */ + .begin + alu[--, _buffer_length, -, _packet_length] + blo[buffer_overflow#] + .end + + /* + * Copy the mpacket and give back the RBUF element. + */ + .begin + .reg element + .reg xfer_size + .reg temp + .sig copy_sig + + alu_shf[element, 0x7f, and, $rsw0, >>24] + alu_shf[xfer_size, 0xff, and, $rsw0, >>16] + + alu[xfer_size, xfer_size, -, 1] + alu_shf[xfer_size, 0x10, or, xfer_size, >>3] + alu_shf[temp, 0x10, or, xfer_size, <<21] + alu_shf[temp, temp, or, element, <<11] + alu_shf[--, temp, or, 1, <<18] + + dram[rbuf_rd, --, _buffer_start, buffer_offset, max_8], + indirect_ref, sig_done[copy_sig] + ctx_arb[copy_sig] + + alu[temp, RBUF_ELEMENT_DONE, or, element, <<16] + msf[fast_wr, --, temp, 0] + .end + + /* + * If EOP, write back the packet descriptor. + */ + .begin + .reg write $stemp $stemp2 + .xfer_order $stemp $stemp2 + .sig zzz + + alu_shf[--, 1, and, $rsw0, >>14] + beq[no_writeback#] + + alu[$stemp, $rsw0, and, 0x1f] + alu[$stemp2, --, b, _packet_length] + sram[write, $stemp, _buffer_handle, 8, 2], ctx_swap[zzz] + + no_writeback#: + .end + + /* + * Resynchronise. + */ + .begin + ctx_arb[sig3] + local_csr_wr[SAME_ME_SIGNAL, (0x80 | (&sig3 << 3))] + .end + + /* + * If EOP, put the buffer back onto the scratch ring. + */ + .begin + .reg write $stemp + .sig zzz + + br_inp_state[SCR_Ring1_Status, rx_done_ring_overflow#] + + alu_shf[--, 1, and, $rsw0, >>14] + beq[mpacket_receive_loop#] + + alu[--, 1, and, $rsw0, >>10] + bne[rxerr#] + + alu[$stemp, --, b, _buffer_handle] + scratch[put, $stemp, zero, 4, 1], ctx_swap[zzz] + cap[fast_wr, 0, XSCALE_INT_A] + br[mpacket_receive_loop#] + + rxerr#: + alu[$stemp, --, b, _buffer_handle] + scratch[put, $stemp, zero, 0, 1], ctx_swap[zzz] + br[mpacket_receive_loop#] + .end + .end + + +abort_rswerr#: + halt + +abort_proterr#: + halt + +state_corrupted#: + halt + +buffer_overflow#: + halt + +rx_done_ring_overflow#: + halt + + diff --git a/drivers/net/ixp2000/ixp2400_rx.ucode b/drivers/net/ixp2000/ixp2400_rx.ucode new file mode 100644 index 000000000000..e8aee2f81aad --- /dev/null +++ b/drivers/net/ixp2000/ixp2400_rx.ucode @@ -0,0 +1,130 @@ +static struct ixp2000_uengine_code ixp2400_rx = +{ + .cpu_model_bitmask = 0x000003fe, + .cpu_min_revision = 0, + .cpu_max_revision = 255, + + .uengine_parameters = IXP2000_UENGINE_8_CONTEXTS | + IXP2000_UENGINE_PRN_UPDATE_EVERY | + IXP2000_UENGINE_NN_FROM_PREVIOUS | + IXP2000_UENGINE_ASSERT_EMPTY_AT_0 | + IXP2000_UENGINE_LM_ADDR1_PER_CONTEXT | + IXP2000_UENGINE_LM_ADDR0_PER_CONTEXT, + + .initial_reg_values = (struct ixp2000_reg_value []) { + { -1, -1 } + }, + + .num_insns = 109, + .insns = (u8 []) { + 0xf0, 0x00, 0x0c, 0xc0, 0x05, + 0xf4, 0x44, 0x0c, 0x00, 0x05, + 0xfc, 0x04, 0x4c, 0x00, 0x00, + 0xf0, 0x00, 0x00, 0x3b, 0x00, + 0xb4, 0x40, 0xf0, 0x3b, 0x1f, + 0x8a, 0xc0, 0x50, 0x3e, 0x05, + 0xb4, 0x40, 0xf0, 0x3b, 0x80, + 0x9a, 0xe0, 0x00, 0x3e, 0x05, + 0xf0, 0x00, 0x00, 0x07, 0x00, + 0xd8, 0x05, 0xc0, 0x00, 0x11, + 0xf0, 0x00, 0x00, 0x0f, 0x00, + 0x91, 0xb0, 0x20, 0x0e, 0x00, + 0xfc, 0x06, 0x60, 0x0b, 0x00, + 0xf0, 0x00, 0x0c, 0x03, 0x00, + 0xf0, 0x00, 0x0c, 0x03, 0x00, + 0xf0, 0x00, 0x0c, 0x03, 0x00, + 0xf0, 0x00, 0x0c, 0x02, 0x00, + 0xb0, 0xc0, 0x30, 0x0f, 0x01, + 0xa4, 0x70, 0x00, 0x0f, 0x20, + 0xd8, 0x02, 0xc0, 0x01, 0x00, + 0xfc, 0x10, 0xac, 0x23, 0x08, + 0xfc, 0x10, 0xac, 0x43, 0x10, + 0xfc, 0x10, 0xac, 0x63, 0x18, + 0xe0, 0x00, 0x00, 0x00, 0x02, + 0xfc, 0x10, 0xae, 0x23, 0x88, + 0x3d, 0x00, 0x04, 0x03, 0x20, + 0xe0, 0x00, 0x00, 0x00, 0x10, + 0x84, 0x82, 0x02, 0x01, 0x3b, + 0xd8, 0x1a, 0x00, 0x01, 0x01, + 0xb4, 0x00, 0x8c, 0x7d, 0x80, + 0x91, 0xb0, 0x80, 0x22, 0x00, + 0xfc, 0x06, 0x60, 0x23, 0x00, + 0xf0, 0x00, 0x0c, 0x03, 0x00, + 0xf0, 0x00, 0x0c, 0x03, 0x00, + 0xf0, 0x00, 0x0c, 0x03, 0x00, + 0x94, 0xf0, 0x92, 0x01, 0x21, + 0xac, 0x40, 0x60, 0x26, 0x00, + 0xa4, 0x30, 0x0c, 0x04, 0x06, + 0xd8, 0x1a, 0x40, 0x01, 0x00, + 0x94, 0xe0, 0xa2, 0x01, 0x21, + 0xac, 0x20, 0x00, 0x28, 0x06, + 0x84, 0xf2, 0x02, 0x01, 0x21, + 0xd8, 0x0b, 0x40, 0x01, 0x00, + 0xf0, 0x00, 0x0c, 0x02, 0x01, + 0xf0, 0x00, 0x0c, 0x02, 0x02, + 0xa0, 0x00, 0x08, 0x04, 0x00, + 0x95, 0x00, 0xc6, 0x01, 0xff, + 0xa0, 0x80, 0x10, 0x30, 0x00, + 0xa0, 0x60, 0x1c, 0x00, 0x01, + 0xf0, 0x0f, 0xf0, 0x33, 0xff, + 0xb4, 0x00, 0xc0, 0x31, 0x81, + 0xb0, 0x80, 0xb0, 0x32, 0x02, + 0xa0, 0x20, 0x20, 0x2c, 0x00, + 0x94, 0xf0, 0xd2, 0x01, 0x21, + 0xd8, 0x0f, 0x40, 0x01, 0x00, + 0x19, 0x40, 0x10, 0x04, 0x20, + 0xa0, 0x00, 0x26, 0x04, 0x00, + 0xd8, 0x0d, 0xc0, 0x01, 0x00, + 0x00, 0x42, 0x10, 0x80, 0x02, + 0xb0, 0x00, 0x46, 0x04, 0x00, + 0xb0, 0x00, 0x56, 0x08, 0x00, + 0xe0, 0x00, 0x00, 0x00, 0x04, + 0xfc, 0x10, 0xae, 0x43, 0x90, + 0x84, 0xf0, 0x32, 0x01, 0x21, + 0xd8, 0x11, 0x40, 0x01, 0x00, + 0xa0, 0x60, 0x3c, 0x00, 0x02, + 0xa0, 0x20, 0x40, 0x10, 0x00, + 0xa0, 0x20, 0x50, 0x14, 0x00, + 0xd8, 0x12, 0x00, 0x00, 0x18, + 0xa0, 0x00, 0x28, 0x0c, 0x00, + 0xb0, 0x00, 0x48, 0x10, 0x00, + 0xb0, 0x00, 0x58, 0x14, 0x00, + 0xaa, 0xf0, 0x00, 0x14, 0x01, + 0xd8, 0x1a, 0xc0, 0x01, 0x05, + 0x85, 0x80, 0x42, 0x01, 0xff, + 0x95, 0x00, 0x66, 0x01, 0xff, + 0xba, 0xc0, 0x60, 0x1b, 0x01, + 0x9a, 0x30, 0x60, 0x19, 0x30, + 0x9a, 0xb0, 0x70, 0x1a, 0x30, + 0x9b, 0x50, 0x78, 0x1e, 0x04, + 0x8a, 0xe2, 0x08, 0x1e, 0x21, + 0x6a, 0x4e, 0x00, 0x13, 0x00, + 0xe0, 0x00, 0x00, 0x00, 0x30, + 0x9b, 0x00, 0x7a, 0x92, 0x04, + 0x3d, 0x00, 0x04, 0x1f, 0x20, + 0x84, 0xe2, 0x02, 0x01, 0x21, + 0xd8, 0x16, 0x80, 0x01, 0x00, + 0xa4, 0x18, 0x0c, 0x7d, 0x80, + 0xa0, 0x58, 0x1c, 0x00, 0x01, + 0x01, 0x42, 0x00, 0xa0, 0x02, + 0xe0, 0x00, 0x00, 0x00, 0x08, + 0xfc, 0x10, 0xae, 0x63, 0x98, + 0xd8, 0x1b, 0x00, 0xc2, 0x14, + 0x84, 0xe2, 0x02, 0x01, 0x21, + 0xd8, 0x05, 0xc0, 0x01, 0x00, + 0x84, 0xa2, 0x02, 0x01, 0x21, + 0xd8, 0x19, 0x40, 0x01, 0x01, + 0xa0, 0x58, 0x0c, 0x00, 0x02, + 0x1a, 0x40, 0x00, 0x04, 0x24, + 0x33, 0x00, 0x01, 0x2f, 0x20, + 0xd8, 0x05, 0xc0, 0x00, 0x18, + 0xa0, 0x58, 0x0c, 0x00, 0x02, + 0x1a, 0x40, 0x00, 0x04, 0x20, + 0xd8, 0x05, 0xc0, 0x00, 0x18, + 0xe0, 0x00, 0x02, 0x00, 0x00, + 0xe0, 0x00, 0x02, 0x00, 0x00, + 0xe0, 0x00, 0x02, 0x00, 0x00, + 0xe0, 0x00, 0x02, 0x00, 0x00, + 0xe0, 0x00, 0x02, 0x00, 0x00, + } +}; diff --git a/drivers/net/ixp2000/ixp2400_tx.uc b/drivers/net/ixp2000/ixp2400_tx.uc new file mode 100644 index 000000000000..d090d1884fb7 --- /dev/null +++ b/drivers/net/ixp2000/ixp2400_tx.uc @@ -0,0 +1,272 @@ +/* + * TX ucode for the Intel IXP2400 in POS-PHY mode. + * Copyright (C) 2004, 2005 Lennert Buytenhek + * 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. + * + * Assumptions made in this code: + * - The IXP2400 MSF is configured for POS-PHY mode, in a mode where + * only one TBUF partition is used. This includes, for example, + * 1x32 SPHY and 1x32 MPHY32, but not 4x8 SPHY or 1x32 MPHY4. (This + * is not an exhaustive list.) + * - The TBUF uses 64-byte mpackets. + * - TX descriptors reside in SRAM, and have the following format: + * struct tx_desc + * { + * // to uengine + * u32 buf_phys_addr; + * u32 pkt_length; + * u32 channel; + * }; + * - Packet data resides in DRAM. + * - Packet buffer addresses are 8-byte aligned. + * - Scratch ring 2 is tx_pending. + * - Scratch ring 3 is tx_done, and has status condition 'full'. + * - This code is run on all eight threads of the microengine it runs on. + */ + +#define TX_SEQUENCE_0 0x0060 +#define TBUF_CTRL 0x1800 + +#define PARTITION_SIZE 128 +#define PARTITION_THRESH 96 + + + .sig volatile sig1 + .sig volatile sig2 + .sig volatile sig3 + + .reg @old_tx_seq_0 + .reg @mpkts_in_flight + .reg @next_tbuf_mpacket + + .reg @buffer_handle + .reg @buffer_start + .reg @packet_length + .reg @channel + .reg @packet_offset + + .reg zero + + immed[zero, 0] + + /* + * Skip context 0 initialisation? + */ + .begin + br!=ctx[0, mpacket_tx_loop#] + .end + + /* + * Wait until all pending TBUF elements have been transmitted. + */ + .begin + .reg read $tx + .sig zzz + + loop_empty#: + msf[read, $tx, zero, TX_SEQUENCE_0, 1], ctx_swap[zzz] + alu_shf[--, --, b, $tx, >>31] + beq[loop_empty#] + + alu[@old_tx_seq_0, --, b, $tx] + .end + + immed[@mpkts_in_flight, 0] + alu[@next_tbuf_mpacket, @old_tx_seq_0, and, (PARTITION_SIZE - 1)] + + immed[@buffer_handle, 0] + + /* + * Initialise signal pipeline. + */ + .begin + local_csr_wr[SAME_ME_SIGNAL, (&sig1 << 3)] + .set_sig sig1 + + local_csr_wr[SAME_ME_SIGNAL, (&sig2 << 3)] + .set_sig sig2 + + local_csr_wr[SAME_ME_SIGNAL, (&sig3 << 3)] + .set_sig sig3 + .end + +mpacket_tx_loop#: + .begin + .reg tbuf_element_index + .reg buffer_handle + .reg sop_eop + .reg packet_data + .reg channel + .reg mpacket_size + + /* + * If there is no packet currently being transmitted, + * dequeue the next TX descriptor, and fetch the buffer + * address, packet length and destination channel number. + */ + .begin + .reg read $stemp $stemp2 $stemp3 + .xfer_order $stemp $stemp2 $stemp3 + .sig zzz + + ctx_arb[sig1] + + alu[--, --, b, @buffer_handle] + bne[already_got_packet#] + + tx_nobufs#: + scratch[get, $stemp, zero, 8, 1], ctx_swap[zzz] + alu[@buffer_handle, --, b, $stemp] + beq[tx_nobufs#] + + sram[read, $stemp, $stemp, 0, 3], ctx_swap[zzz] + alu[@buffer_start, --, b, $stemp] + alu[@packet_length, --, b, $stemp2] + beq[zero_byte_packet#] + alu[@channel, --, b, $stemp3] + immed[@packet_offset, 0] + + already_got_packet#: + local_csr_wr[SAME_ME_SIGNAL, (0x80 | (&sig1 << 3))] + .end + + /* + * Determine tbuf element index, SOP/EOP flags, mpacket + * offset and mpacket size and cache buffer_handle and + * channel number. + */ + .begin + alu[tbuf_element_index, --, b, @next_tbuf_mpacket] + alu[@next_tbuf_mpacket, @next_tbuf_mpacket, +, 1] + alu[@next_tbuf_mpacket, @next_tbuf_mpacket, and, + (PARTITION_SIZE - 1)] + + alu[buffer_handle, --, b, @buffer_handle] + immed[@buffer_handle, 0] + + immed[sop_eop, 1] + + alu[packet_data, --, b, @packet_offset] + bne[no_sop#] + alu[sop_eop, sop_eop, or, 2] + no_sop#: + alu[packet_data, packet_data, +, @buffer_start] + + alu[channel, --, b, @channel] + + alu[mpacket_size, @packet_length, -, @packet_offset] + alu[--, 64, -, mpacket_size] + bhs[eop#] + alu[@buffer_handle, --, b, buffer_handle] + immed[mpacket_size, 64] + alu[sop_eop, sop_eop, and, 2] + eop#: + + alu[@packet_offset, @packet_offset, +, mpacket_size] + .end + + /* + * Wait until there's enough space in the TBUF. + */ + .begin + .reg read $tx + .reg temp + .sig zzz + + ctx_arb[sig2] + + br[test_space#] + + loop_space#: + msf[read, $tx, zero, TX_SEQUENCE_0, 1], ctx_swap[zzz] + + alu[temp, $tx, -, @old_tx_seq_0] + alu[temp, temp, and, 0xff] + alu[@mpkts_in_flight, @mpkts_in_flight, -, temp] + + alu[@old_tx_seq_0, --, b, $tx] + + test_space#: + alu[--, PARTITION_THRESH, -, @mpkts_in_flight] + blo[loop_space#] + + alu[@mpkts_in_flight, @mpkts_in_flight, +, 1] + + local_csr_wr[SAME_ME_SIGNAL, (0x80 | (&sig2 << 3))] + .end + + /* + * Copy the packet data to the TBUF. + */ + .begin + .reg temp + .sig copy_sig + + alu[temp, mpacket_size, -, 1] + alu_shf[temp, 0x10, or, temp, >>3] + alu_shf[temp, 0x10, or, temp, <<21] + alu_shf[temp, temp, or, tbuf_element_index, <<11] + alu_shf[--, temp, or, 1, <<18] + + dram[tbuf_wr, --, packet_data, 0, max_8], + indirect_ref, sig_done[copy_sig] + ctx_arb[copy_sig] + .end + + /* + * Mark TBUF element as ready-to-be-transmitted. + */ + .begin + .reg write $tsw $tsw2 + .xfer_order $tsw $tsw2 + .reg temp + .sig zzz + + alu_shf[temp, channel, or, mpacket_size, <<24] + alu_shf[$tsw, temp, or, sop_eop, <<8] + immed[$tsw2, 0] + + immed[temp, TBUF_CTRL] + alu_shf[temp, temp, or, tbuf_element_index, <<3] + msf[write, $tsw, temp, 0, 2], ctx_swap[zzz] + .end + + /* + * Resynchronise. + */ + .begin + ctx_arb[sig3] + local_csr_wr[SAME_ME_SIGNAL, (0x80 | (&sig3 << 3))] + .end + + /* + * If this was an EOP mpacket, recycle the TX buffer + * and signal the host. + */ + .begin + .reg write $stemp + .sig zzz + + alu[--, sop_eop, and, 1] + beq[mpacket_tx_loop#] + + tx_done_ring_full#: + br_inp_state[SCR_Ring3_Status, tx_done_ring_full#] + + alu[$stemp, --, b, buffer_handle] + scratch[put, $stemp, zero, 12, 1], ctx_swap[zzz] + cap[fast_wr, 0, XSCALE_INT_A] + br[mpacket_tx_loop#] + .end + .end + + +zero_byte_packet#: + halt + + diff --git a/drivers/net/ixp2000/ixp2400_tx.ucode b/drivers/net/ixp2000/ixp2400_tx.ucode new file mode 100644 index 000000000000..a433e24b0a51 --- /dev/null +++ b/drivers/net/ixp2000/ixp2400_tx.ucode @@ -0,0 +1,98 @@ +static struct ixp2000_uengine_code ixp2400_tx = +{ + .cpu_model_bitmask = 0x000003fe, + .cpu_min_revision = 0, + .cpu_max_revision = 255, + + .uengine_parameters = IXP2000_UENGINE_8_CONTEXTS | + IXP2000_UENGINE_PRN_UPDATE_EVERY | + IXP2000_UENGINE_NN_FROM_PREVIOUS | + IXP2000_UENGINE_ASSERT_EMPTY_AT_0 | + IXP2000_UENGINE_LM_ADDR1_PER_CONTEXT | + IXP2000_UENGINE_LM_ADDR0_PER_CONTEXT, + + .initial_reg_values = (struct ixp2000_reg_value []) { + { -1, -1 } + }, + + .num_insns = 77, + .insns = (u8 []) { + 0xf0, 0x00, 0x00, 0x07, 0x00, + 0xd8, 0x03, 0x00, 0x00, 0x11, + 0x3c, 0x40, 0x00, 0x04, 0xe0, + 0x81, 0xf2, 0x02, 0x01, 0x00, + 0xd8, 0x00, 0x80, 0x01, 0x00, + 0xb0, 0x08, 0x06, 0x00, 0x00, + 0xf0, 0x00, 0x0c, 0x00, 0x80, + 0xb4, 0x49, 0x02, 0x03, 0x7f, + 0xf0, 0x00, 0x02, 0x83, 0x00, + 0xfc, 0x10, 0xac, 0x23, 0x08, + 0xfc, 0x10, 0xac, 0x43, 0x10, + 0xfc, 0x10, 0xac, 0x63, 0x18, + 0xe0, 0x00, 0x00, 0x00, 0x02, + 0xa0, 0x30, 0x02, 0x80, 0x00, + 0xd8, 0x06, 0x00, 0x01, 0x01, + 0x19, 0x40, 0x00, 0x04, 0x28, + 0xb0, 0x0a, 0x06, 0x00, 0x00, + 0xd8, 0x03, 0xc0, 0x01, 0x00, + 0x00, 0x44, 0x00, 0x80, 0x80, + 0xa0, 0x09, 0x06, 0x00, 0x00, + 0xb0, 0x0b, 0x06, 0x04, 0x00, + 0xd8, 0x13, 0x00, 0x01, 0x00, + 0xb0, 0x0c, 0x06, 0x08, 0x00, + 0xf0, 0x00, 0x0c, 0x00, 0xa0, + 0xfc, 0x10, 0xae, 0x23, 0x88, + 0xa0, 0x00, 0x12, 0x40, 0x00, + 0xb0, 0xc9, 0x02, 0x43, 0x01, + 0xb4, 0x49, 0x02, 0x43, 0x7f, + 0xb0, 0x00, 0x22, 0x80, 0x00, + 0xf0, 0x00, 0x02, 0x83, 0x00, + 0xf0, 0x00, 0x0c, 0x04, 0x02, + 0xb0, 0x40, 0x6c, 0x00, 0xa0, + 0xd8, 0x08, 0x80, 0x01, 0x01, + 0xaa, 0x00, 0x2c, 0x08, 0x02, + 0xa0, 0xc0, 0x30, 0x18, 0x90, + 0xa0, 0x00, 0x43, 0x00, 0x00, + 0xba, 0xc0, 0x32, 0xc0, 0xa0, + 0xaa, 0xb0, 0x00, 0x0f, 0x40, + 0xd8, 0x0a, 0x80, 0x01, 0x04, + 0xb0, 0x0a, 0x00, 0x08, 0x00, + 0xf0, 0x00, 0x00, 0x0f, 0x40, + 0xa4, 0x00, 0x2c, 0x08, 0x02, + 0xa0, 0x8a, 0x00, 0x0c, 0xa0, + 0xe0, 0x00, 0x00, 0x00, 0x04, + 0xd8, 0x0c, 0x80, 0x00, 0x18, + 0x3c, 0x40, 0x00, 0x04, 0xe0, + 0xba, 0x80, 0x42, 0x01, 0x80, + 0xb4, 0x40, 0x40, 0x13, 0xff, + 0xaa, 0x88, 0x00, 0x10, 0x80, + 0xb0, 0x08, 0x06, 0x00, 0x00, + 0xaa, 0xf0, 0x0d, 0x80, 0x80, + 0xd8, 0x0b, 0x40, 0x01, 0x05, + 0xa0, 0x88, 0x0c, 0x04, 0x80, + 0xfc, 0x10, 0xae, 0x43, 0x90, + 0xba, 0xc0, 0x50, 0x0f, 0x01, + 0x9a, 0x30, 0x50, 0x15, 0x30, + 0x9a, 0xb0, 0x50, 0x16, 0x30, + 0x9b, 0x50, 0x58, 0x16, 0x01, + 0x8a, 0xe2, 0x08, 0x16, 0x21, + 0x6b, 0x4e, 0x00, 0x83, 0x03, + 0xe0, 0x00, 0x00, 0x00, 0x30, + 0x9a, 0x80, 0x70, 0x0e, 0x04, + 0x8b, 0x88, 0x08, 0x1e, 0x02, + 0xf0, 0x00, 0x0c, 0x01, 0x81, + 0xf0, 0x01, 0x80, 0x1f, 0x00, + 0x9b, 0xd0, 0x78, 0x1e, 0x01, + 0x3d, 0x42, 0x00, 0x1c, 0x20, + 0xe0, 0x00, 0x00, 0x00, 0x08, + 0xfc, 0x10, 0xae, 0x63, 0x98, + 0xa4, 0x30, 0x0c, 0x04, 0x02, + 0xd8, 0x03, 0x00, 0x01, 0x00, + 0xd8, 0x11, 0xc1, 0x42, 0x14, + 0xa0, 0x18, 0x00, 0x08, 0x00, + 0x1a, 0x40, 0x00, 0x04, 0x2c, + 0x33, 0x00, 0x01, 0x2f, 0x20, + 0xd8, 0x03, 0x00, 0x00, 0x18, + 0xe0, 0x00, 0x02, 0x00, 0x00, + } +}; diff --git a/drivers/net/ixp2000/ixpdev.c b/drivers/net/ixp2000/ixpdev.c new file mode 100644 index 000000000000..09f03f493bea --- /dev/null +++ b/drivers/net/ixp2000/ixpdev.c @@ -0,0 +1,421 @@ +/* + * IXP2000 MSF network device driver + * 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/config.h> +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/init.h> +#include <linux/moduleparam.h> +#include <asm/arch/uengine.h> +#include <asm/mach-types.h> +#include <asm/io.h> +#include "ixp2400_rx.ucode" +#include "ixp2400_tx.ucode" +#include "ixpdev_priv.h" +#include "ixpdev.h" + +#define DRV_MODULE_VERSION "0.2" + +static int nds_count; +static struct net_device **nds; +static int nds_open; +static void (*set_port_admin_status)(int port, int up); + +static struct ixpdev_rx_desc * const rx_desc = + (struct ixpdev_rx_desc *)(IXP2000_SRAM0_VIRT_BASE + RX_BUF_DESC_BASE); +static struct ixpdev_tx_desc * const tx_desc = + (struct ixpdev_tx_desc *)(IXP2000_SRAM0_VIRT_BASE + TX_BUF_DESC_BASE); +static int tx_pointer; + + +static int ixpdev_xmit(struct sk_buff *skb, struct net_device *dev) +{ + struct ixpdev_priv *ip = netdev_priv(dev); + struct ixpdev_tx_desc *desc; + int entry; + + if (unlikely(skb->len > PAGE_SIZE)) { + /* @@@ Count drops. */ + dev_kfree_skb(skb); + return 0; + } + + entry = tx_pointer; + tx_pointer = (tx_pointer + 1) % TX_BUF_COUNT; + + desc = tx_desc + entry; + desc->pkt_length = skb->len; + desc->channel = ip->channel; + + skb_copy_and_csum_dev(skb, phys_to_virt(desc->buf_addr)); + dev_kfree_skb(skb); + + ixp2000_reg_write(RING_TX_PENDING, + TX_BUF_DESC_BASE + (entry * sizeof(struct ixpdev_tx_desc))); + + dev->trans_start = jiffies; + + local_irq_disable(); + ip->tx_queue_entries++; + if (ip->tx_queue_entries == TX_BUF_COUNT_PER_CHAN) + netif_stop_queue(dev); + local_irq_enable(); + + return 0; +} + + +static int ixpdev_rx(struct net_device *dev, int *budget) +{ + while (*budget > 0) { + struct ixpdev_rx_desc *desc; + struct sk_buff *skb; + void *buf; + u32 _desc; + + _desc = ixp2000_reg_read(RING_RX_DONE); + if (_desc == 0) + return 0; + + desc = rx_desc + + ((_desc - RX_BUF_DESC_BASE) / sizeof(struct ixpdev_rx_desc)); + buf = phys_to_virt(desc->buf_addr); + + if (desc->pkt_length < 4 || desc->pkt_length > PAGE_SIZE) { + printk(KERN_ERR "ixp2000: rx err, length %d\n", + desc->pkt_length); + goto err; + } + + if (desc->channel < 0 || desc->channel >= nds_count) { + printk(KERN_ERR "ixp2000: rx err, channel %d\n", + desc->channel); + goto err; + } + + /* @@@ Make FCS stripping configurable. */ + desc->pkt_length -= 4; + + if (unlikely(!netif_running(nds[desc->channel]))) + goto err; + + skb = dev_alloc_skb(desc->pkt_length + 2); + if (likely(skb != NULL)) { + skb->dev = nds[desc->channel]; + skb_reserve(skb, 2); + eth_copy_and_sum(skb, buf, desc->pkt_length, 0); + skb_put(skb, desc->pkt_length); + skb->protocol = eth_type_trans(skb, skb->dev); + + skb->dev->last_rx = jiffies; + + netif_receive_skb(skb); + } + +err: + ixp2000_reg_write(RING_RX_PENDING, _desc); + dev->quota--; + (*budget)--; + } + + return 1; +} + +/* dev always points to nds[0]. */ +static int ixpdev_poll(struct net_device *dev, int *budget) +{ + /* @@@ Have to stop polling when nds[0] is administratively + * downed while we are polling. */ + do { + ixp2000_reg_write(IXP2000_IRQ_THD_RAW_STATUS_A_0, 0x00ff); + + if (ixpdev_rx(dev, budget)) + return 1; + } while (ixp2000_reg_read(IXP2000_IRQ_THD_RAW_STATUS_A_0) & 0x00ff); + + netif_rx_complete(dev); + ixp2000_reg_write(IXP2000_IRQ_THD_ENABLE_SET_A_0, 0x00ff); + + return 0; +} + +static void ixpdev_tx_complete(void) +{ + int channel; + u32 wake; + + wake = 0; + while (1) { + struct ixpdev_priv *ip; + u32 desc; + int entry; + + desc = ixp2000_reg_read(RING_TX_DONE); + if (desc == 0) + break; + + /* @@@ Check whether entries come back in order. */ + entry = (desc - TX_BUF_DESC_BASE) / sizeof(struct ixpdev_tx_desc); + channel = tx_desc[entry].channel; + + if (channel < 0 || channel >= nds_count) { + printk(KERN_ERR "ixp2000: txcomp channel index " + "out of bounds (%d, %.8i, %d)\n", + channel, (unsigned int)desc, entry); + continue; + } + + ip = netdev_priv(nds[channel]); + if (ip->tx_queue_entries == TX_BUF_COUNT_PER_CHAN) + wake |= 1 << channel; + ip->tx_queue_entries--; + } + + for (channel = 0; wake != 0; channel++) { + if (wake & (1 << channel)) { + netif_wake_queue(nds[channel]); + wake &= ~(1 << channel); + } + } +} + +static irqreturn_t ixpdev_interrupt(int irq, void *dev_id, struct pt_regs *regs) +{ + u32 status; + + status = ixp2000_reg_read(IXP2000_IRQ_THD_STATUS_A_0); + if (status == 0) + return IRQ_NONE; + + /* + * Any of the eight receive units signaled RX? + */ + if (status & 0x00ff) { + ixp2000_reg_wrb(IXP2000_IRQ_THD_ENABLE_CLEAR_A_0, 0x00ff); + if (likely(__netif_rx_schedule_prep(nds[0]))) { + __netif_rx_schedule(nds[0]); + } else { + printk(KERN_CRIT "ixp2000: irq while polling!!\n"); + } + } + + /* + * Any of the eight transmit units signaled TXdone? + */ + if (status & 0xff00) { + ixp2000_reg_wrb(IXP2000_IRQ_THD_RAW_STATUS_A_0, 0xff00); + ixpdev_tx_complete(); + } + + return IRQ_HANDLED; +} + +#ifdef CONFIG_NET_POLL_CONTROLLER +static void ixpdev_poll_controller(struct net_device *dev) +{ + disable_irq(IRQ_IXP2000_THDA0); + ixpdev_interrupt(IRQ_IXP2000_THDA0, dev, NULL); + enable_irq(IRQ_IXP2000_THDA0); +} +#endif + +static int ixpdev_open(struct net_device *dev) +{ + struct ixpdev_priv *ip = netdev_priv(dev); + int err; + + if (!nds_open++) { + err = request_irq(IRQ_IXP2000_THDA0, ixpdev_interrupt, + SA_SHIRQ, "ixp2000_eth", nds); + if (err) { + nds_open--; + return err; + } + + ixp2000_reg_write(IXP2000_IRQ_THD_ENABLE_SET_A_0, 0xffff); + } + + set_port_admin_status(ip->channel, 1); + netif_start_queue(dev); + + return 0; +} + +static int ixpdev_close(struct net_device *dev) +{ + struct ixpdev_priv *ip = netdev_priv(dev); + + netif_stop_queue(dev); + set_port_admin_status(ip->channel, 0); + + if (!--nds_open) { + ixp2000_reg_write(IXP2000_IRQ_THD_ENABLE_CLEAR_A_0, 0xffff); + free_irq(IRQ_IXP2000_THDA0, nds); + } + + return 0; +} + +struct net_device *ixpdev_alloc(int channel, int sizeof_priv) +{ + struct net_device *dev; + struct ixpdev_priv *ip; + + dev = alloc_etherdev(sizeof_priv); + if (dev == NULL) + return NULL; + + dev->hard_start_xmit = ixpdev_xmit; + dev->poll = ixpdev_poll; + dev->open = ixpdev_open; + dev->stop = ixpdev_close; +#ifdef CONFIG_NET_POLL_CONTROLLER + dev->poll_controller = ixpdev_poll_controller; +#endif + + dev->features |= NETIF_F_SG | NETIF_F_HW_CSUM; + dev->weight = 64; + + ip = netdev_priv(dev); + ip->channel = channel; + ip->tx_queue_entries = 0; + + return dev; +} + +int ixpdev_init(int __nds_count, struct net_device **__nds, + void (*__set_port_admin_status)(int port, int up)) +{ + int i; + int err; + + if (RX_BUF_COUNT > 192 || TX_BUF_COUNT > 192) { + static void __too_many_rx_or_tx_buffers(void); + __too_many_rx_or_tx_buffers(); + } + + printk(KERN_INFO "IXP2000 MSF ethernet driver %s\n", DRV_MODULE_VERSION); + + nds_count = __nds_count; + nds = __nds; + set_port_admin_status = __set_port_admin_status; + + for (i = 0; i < RX_BUF_COUNT; i++) { + void *buf; + + buf = (void *)get_zeroed_page(GFP_KERNEL); + if (buf == NULL) { + err = -ENOMEM; + while (--i >= 0) + free_page((unsigned long)phys_to_virt(rx_desc[i].buf_addr)); + goto err_out; + } + rx_desc[i].buf_addr = virt_to_phys(buf); + rx_desc[i].buf_length = PAGE_SIZE; + } + + /* @@@ Maybe we shouldn't be preallocating TX buffers. */ + for (i = 0; i < TX_BUF_COUNT; i++) { + void *buf; + + buf = (void *)get_zeroed_page(GFP_KERNEL); + if (buf == NULL) { + err = -ENOMEM; + while (--i >= 0) + free_page((unsigned long)phys_to_virt(tx_desc[i].buf_addr)); + goto err_free_rx; + } + tx_desc[i].buf_addr = virt_to_phys(buf); + } + + /* 256 entries, ring status set means 'empty', base address 0x0000. */ + ixp2000_reg_write(RING_RX_PENDING_BASE, 0x44000000); + ixp2000_reg_write(RING_RX_PENDING_HEAD, 0x00000000); + ixp2000_reg_write(RING_RX_PENDING_TAIL, 0x00000000); + + /* 256 entries, ring status set means 'full', base address 0x0400. */ + ixp2000_reg_write(RING_RX_DONE_BASE, 0x40000400); + ixp2000_reg_write(RING_RX_DONE_HEAD, 0x00000000); + ixp2000_reg_write(RING_RX_DONE_TAIL, 0x00000000); + + for (i = 0; i < RX_BUF_COUNT; i++) { + ixp2000_reg_write(RING_RX_PENDING, + RX_BUF_DESC_BASE + (i * sizeof(struct ixpdev_rx_desc))); + } + + ixp2000_uengine_load(0, &ixp2400_rx); + ixp2000_uengine_start_contexts(0, 0xff); + + /* 256 entries, ring status set means 'empty', base address 0x0800. */ + ixp2000_reg_write(RING_TX_PENDING_BASE, 0x44000800); + ixp2000_reg_write(RING_TX_PENDING_HEAD, 0x00000000); + ixp2000_reg_write(RING_TX_PENDING_TAIL, 0x00000000); + + /* 256 entries, ring status set means 'full', base address 0x0c00. */ + ixp2000_reg_write(RING_TX_DONE_BASE, 0x40000c00); + ixp2000_reg_write(RING_TX_DONE_HEAD, 0x00000000); + ixp2000_reg_write(RING_TX_DONE_TAIL, 0x00000000); + + ixp2000_uengine_load(1, &ixp2400_tx); + ixp2000_uengine_start_contexts(1, 0xff); + + for (i = 0; i < nds_count; i++) { + err = register_netdev(nds[i]); + if (err) { + while (--i >= 0) + unregister_netdev(nds[i]); + goto err_free_tx; + } + } + + for (i = 0; i < nds_count; i++) { + printk(KERN_INFO "%s: IXP2000 MSF ethernet (port %d), " + "%.2x:%.2x:%.2x:%.2x:%.2x:%.2x.\n", nds[i]->name, i, + nds[i]->dev_addr[0], nds[i]->dev_addr[1], + nds[i]->dev_addr[2], nds[i]->dev_addr[3], + nds[i]->dev_addr[4], nds[i]->dev_addr[5]); + } + + return 0; + +err_free_tx: + for (i = 0; i < TX_BUF_COUNT; i++) + free_page((unsigned long)phys_to_virt(tx_desc[i].buf_addr)); + +err_free_rx: + for (i = 0; i < RX_BUF_COUNT; i++) + free_page((unsigned long)phys_to_virt(rx_desc[i].buf_addr)); + +err_out: + return err; +} + +void ixpdev_deinit(void) +{ + int i; + + /* @@@ Flush out pending packets. */ + + for (i = 0; i < nds_count; i++) + unregister_netdev(nds[i]); + + ixp2000_uengine_stop_contexts(1, 0xff); + ixp2000_uengine_stop_contexts(0, 0xff); + ixp2000_uengine_reset(0x3); + + for (i = 0; i < TX_BUF_COUNT; i++) + free_page((unsigned long)phys_to_virt(tx_desc[i].buf_addr)); + + for (i = 0; i < RX_BUF_COUNT; i++) + free_page((unsigned long)phys_to_virt(rx_desc[i].buf_addr)); +} diff --git a/drivers/net/ixp2000/ixpdev.h b/drivers/net/ixp2000/ixpdev.h new file mode 100644 index 000000000000..bd686cb63058 --- /dev/null +++ b/drivers/net/ixp2000/ixpdev.h @@ -0,0 +1,27 @@ +/* + * IXP2000 MSF network device driver + * 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. + */ + +#ifndef __IXPDEV_H +#define __IXPDEV_H + +struct ixpdev_priv +{ + int channel; + int tx_queue_entries; +}; + +struct net_device *ixpdev_alloc(int channel, int sizeof_priv); +int ixpdev_init(int num_ports, struct net_device **nds, + void (*set_port_admin_status)(int port, int up)); +void ixpdev_deinit(void); + + +#endif diff --git a/drivers/net/ixp2000/ixpdev_priv.h b/drivers/net/ixp2000/ixpdev_priv.h new file mode 100644 index 000000000000..86aa08ea0c33 --- /dev/null +++ b/drivers/net/ixp2000/ixpdev_priv.h @@ -0,0 +1,57 @@ +/* + * IXP2000 MSF network device driver + * 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. + */ + +#ifndef __IXPDEV_PRIV_H +#define __IXPDEV_PRIV_H + +#define RX_BUF_DESC_BASE 0x00001000 +#define RX_BUF_COUNT ((3 * PAGE_SIZE) / (4 * sizeof(struct ixpdev_rx_desc))) +#define TX_BUF_DESC_BASE 0x00002000 +#define TX_BUF_COUNT ((3 * PAGE_SIZE) / (4 * sizeof(struct ixpdev_tx_desc))) +#define TX_BUF_COUNT_PER_CHAN (TX_BUF_COUNT / 4) + +#define RING_RX_PENDING ((u32 *)IXP2000_SCRATCH_RING_VIRT_BASE) +#define RING_RX_DONE ((u32 *)(IXP2000_SCRATCH_RING_VIRT_BASE + 4)) +#define RING_TX_PENDING ((u32 *)(IXP2000_SCRATCH_RING_VIRT_BASE + 8)) +#define RING_TX_DONE ((u32 *)(IXP2000_SCRATCH_RING_VIRT_BASE + 12)) + +#define SCRATCH_REG(x) ((u32 *)(IXP2000_GLOBAL_REG_VIRT_BASE | 0x0800 | (x))) +#define RING_RX_PENDING_BASE SCRATCH_REG(0x00) +#define RING_RX_PENDING_HEAD SCRATCH_REG(0x04) +#define RING_RX_PENDING_TAIL SCRATCH_REG(0x08) +#define RING_RX_DONE_BASE SCRATCH_REG(0x10) +#define RING_RX_DONE_HEAD SCRATCH_REG(0x14) +#define RING_RX_DONE_TAIL SCRATCH_REG(0x18) +#define RING_TX_PENDING_BASE SCRATCH_REG(0x20) +#define RING_TX_PENDING_HEAD SCRATCH_REG(0x24) +#define RING_TX_PENDING_TAIL SCRATCH_REG(0x28) +#define RING_TX_DONE_BASE SCRATCH_REG(0x30) +#define RING_TX_DONE_HEAD SCRATCH_REG(0x34) +#define RING_TX_DONE_TAIL SCRATCH_REG(0x38) + +struct ixpdev_rx_desc +{ + u32 buf_addr; + u32 buf_length; + u32 channel; + u32 pkt_length; +}; + +struct ixpdev_tx_desc +{ + u32 buf_addr; + u32 pkt_length; + u32 channel; + u32 unused; +}; + + +#endif diff --git a/drivers/net/ixp2000/pm3386.c b/drivers/net/ixp2000/pm3386.c new file mode 100644 index 000000000000..5c7ab7564053 --- /dev/null +++ b/drivers/net/ixp2000/pm3386.c @@ -0,0 +1,334 @@ +/* + * Helper functions for the PM3386s 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/config.h> +#include <linux/module.h> +#include <linux/delay.h> +#include <linux/netdevice.h> +#include <asm/io.h> +#include "pm3386.h" + +/* + * Read from register 'reg' of PM3386 device 'pm'. + */ +static u16 pm3386_reg_read(int pm, int reg) +{ + void *_reg; + u16 value; + + _reg = (void *)ENP2611_PM3386_0_VIRT_BASE; + if (pm == 1) + _reg = (void *)ENP2611_PM3386_1_VIRT_BASE; + + value = *((volatile u16 *)(_reg + (reg << 1))); + +// printk(KERN_INFO "pm3386_reg_read(%d, %.3x) = %.8x\n", pm, reg, value); + + return value; +} + +/* + * Write to register 'reg' of PM3386 device 'pm', and perform + * a readback from the identification register. + */ +static void pm3386_reg_write(int pm, int reg, u16 value) +{ + void *_reg; + u16 dummy; + +// printk(KERN_INFO "pm3386_reg_write(%d, %.3x, %.8x)\n", pm, reg, value); + + _reg = (void *)ENP2611_PM3386_0_VIRT_BASE; + if (pm == 1) + _reg = (void *)ENP2611_PM3386_1_VIRT_BASE; + + *((volatile u16 *)(_reg + (reg << 1))) = value; + + dummy = *((volatile u16 *)_reg); + __asm__ __volatile__("mov %0, %0" : "+r" (dummy)); +} + +/* + * Read from port 'port' register 'reg', where the registers + * for the different ports are 'spacing' registers apart. + */ +static u16 pm3386_port_reg_read(int port, int _reg, int spacing) +{ + int reg; + + reg = _reg; + if (port & 1) + reg += spacing; + + return pm3386_reg_read(port >> 1, reg); +} + +/* + * Write to port 'port' register 'reg', where the registers + * for the different ports are 'spacing' registers apart. + */ +static void pm3386_port_reg_write(int port, int _reg, int spacing, u16 value) +{ + int reg; + + reg = _reg; + if (port & 1) + reg += spacing; + + pm3386_reg_write(port >> 1, reg, value); +} + + +void pm3386_reset(void) +{ + u8 mac[3][6]; + + /* Save programmed MAC addresses. */ + pm3386_get_mac(0, mac[0]); + pm3386_get_mac(1, mac[1]); + pm3386_get_mac(2, mac[2]); + + /* Assert analog and digital reset. */ + pm3386_reg_write(0, 0x002, 0x0060); + pm3386_reg_write(1, 0x002, 0x0060); + mdelay(1); + + /* Deassert analog reset. */ + pm3386_reg_write(0, 0x002, 0x0062); + pm3386_reg_write(1, 0x002, 0x0062); + mdelay(10); + + /* Deassert digital reset. */ + pm3386_reg_write(0, 0x002, 0x0063); + pm3386_reg_write(1, 0x002, 0x0063); + mdelay(10); + + /* Restore programmed MAC addresses. */ + pm3386_set_mac(0, mac[0]); + pm3386_set_mac(1, mac[1]); + pm3386_set_mac(2, mac[2]); + + /* Disable carrier on all ports. */ + pm3386_set_carrier(0, 0); + pm3386_set_carrier(1, 0); + pm3386_set_carrier(2, 0); +} + +static u16 swaph(u16 x) +{ + return ((x << 8) | (x >> 8)) & 0xffff; +} + +void pm3386_init_port(int port) +{ + int pm = port >> 1; + + /* + * Work around ENP2611 bootloader programming MAC address + * in reverse. + */ + if (pm3386_port_reg_read(port, 0x30a, 0x100) == 0x0000 && + (pm3386_port_reg_read(port, 0x309, 0x100) & 0xff00) == 0x5000) { + u16 temp[3]; + + temp[0] = pm3386_port_reg_read(port, 0x308, 0x100); + temp[1] = pm3386_port_reg_read(port, 0x309, 0x100); + temp[2] = pm3386_port_reg_read(port, 0x30a, 0x100); + pm3386_port_reg_write(port, 0x308, 0x100, swaph(temp[2])); + pm3386_port_reg_write(port, 0x309, 0x100, swaph(temp[1])); + pm3386_port_reg_write(port, 0x30a, 0x100, swaph(temp[0])); + } + + /* + * Initialise narrowbanding mode. See application note 2010486 + * for more information. (@@@ We also need to issue a reset + * when ROOL or DOOL are detected.) + */ + pm3386_port_reg_write(port, 0x708, 0x10, 0xd055); + udelay(500); + pm3386_port_reg_write(port, 0x708, 0x10, 0x5055); + + /* + * SPI-3 ingress block. Set 64 bytes SPI-3 burst size + * towards SPI-3 bridge. + */ + pm3386_port_reg_write(port, 0x122, 0x20, 0x0002); + + /* + * Enable ingress protocol checking, and soft reset the + * SPI-3 ingress block. + */ + pm3386_reg_write(pm, 0x103, 0x0003); + while (!(pm3386_reg_read(pm, 0x103) & 0x80)) + ; + + /* + * SPI-3 egress block. Gather 12288 bytes of the current + * packet in the TX fifo before initiating transmit on the + * SERDES interface. (Prevents TX underflows.) + */ + pm3386_port_reg_write(port, 0x221, 0x20, 0x0007); + + /* + * Enforce odd parity from the SPI-3 bridge, and soft reset + * the SPI-3 egress block. + */ + pm3386_reg_write(pm, 0x203, 0x000d & ~(4 << (port & 1))); + while ((pm3386_reg_read(pm, 0x203) & 0x000c) != 0x000c) + ; + + /* + * EGMAC block. Set this channels to reject long preambles, + * not send or transmit PAUSE frames, enable preamble checking, + * disable frame length checking, enable FCS appending, enable + * TX frame padding. + */ + pm3386_port_reg_write(port, 0x302, 0x100, 0x0113); + + /* + * Soft reset the EGMAC block. + */ + pm3386_port_reg_write(port, 0x301, 0x100, 0x8000); + pm3386_port_reg_write(port, 0x301, 0x100, 0x0000); + + /* + * Auto-sense autonegotiation status. + */ + pm3386_port_reg_write(port, 0x306, 0x100, 0x0100); + + /* + * Allow reception of jumbo frames. + */ + pm3386_port_reg_write(port, 0x310, 0x100, 9018); + + /* + * Allow transmission of jumbo frames. + */ + pm3386_port_reg_write(port, 0x336, 0x100, 9018); + + /* @@@ Should set 0x337/0x437 (RX forwarding threshold.) */ + + /* + * Set autonegotiation parameters to 'no PAUSE, full duplex.' + */ + pm3386_port_reg_write(port, 0x31c, 0x100, 0x0020); + + /* + * Enable and restart autonegotiation. + */ + pm3386_port_reg_write(port, 0x318, 0x100, 0x0003); + pm3386_port_reg_write(port, 0x318, 0x100, 0x0002); +} + +void pm3386_get_mac(int port, u8 *mac) +{ + u16 temp; + + temp = pm3386_port_reg_read(port, 0x308, 0x100); + mac[0] = temp & 0xff; + mac[1] = (temp >> 8) & 0xff; + + temp = pm3386_port_reg_read(port, 0x309, 0x100); + mac[2] = temp & 0xff; + mac[3] = (temp >> 8) & 0xff; + + temp = pm3386_port_reg_read(port, 0x30a, 0x100); + mac[4] = temp & 0xff; + mac[5] = (temp >> 8) & 0xff; +} + +void pm3386_set_mac(int port, u8 *mac) +{ + pm3386_port_reg_write(port, 0x308, 0x100, (mac[1] << 8) | mac[0]); + pm3386_port_reg_write(port, 0x309, 0x100, (mac[3] << 8) | mac[2]); + pm3386_port_reg_write(port, 0x30a, 0x100, (mac[5] << 8) | mac[4]); +} + +static u32 pm3386_get_stat(int port, u16 base) +{ + u32 value; + + value = pm3386_port_reg_read(port, base, 0x100); + value |= pm3386_port_reg_read(port, base + 1, 0x100) << 16; + + return value; +} + +void pm3386_get_stats(int port, struct net_device_stats *stats) +{ + /* + * Snapshot statistics counters. + */ + pm3386_port_reg_write(port, 0x500, 0x100, 0x0001); + while (pm3386_port_reg_read(port, 0x500, 0x100) & 0x0001) + ; + + memset(stats, 0, sizeof(*stats)); + + stats->rx_packets = pm3386_get_stat(port, 0x510); + stats->tx_packets = pm3386_get_stat(port, 0x590); + stats->rx_bytes = pm3386_get_stat(port, 0x514); + stats->tx_bytes = pm3386_get_stat(port, 0x594); + /* @@@ Add other stats. */ +} + +void pm3386_set_carrier(int port, int state) +{ + pm3386_port_reg_write(port, 0x703, 0x10, state ? 0x1001 : 0x0000); +} + +int pm3386_is_link_up(int port) +{ + u16 temp; + + temp = pm3386_port_reg_read(port, 0x31a, 0x100); + temp = pm3386_port_reg_read(port, 0x31a, 0x100); + + return !!(temp & 0x0002); +} + +void pm3386_enable_rx(int port) +{ + u16 temp; + + temp = pm3386_port_reg_read(port, 0x303, 0x100); + temp |= 0x1000; + pm3386_port_reg_write(port, 0x303, 0x100, temp); +} + +void pm3386_disable_rx(int port) +{ + u16 temp; + + temp = pm3386_port_reg_read(port, 0x303, 0x100); + temp &= 0xefff; + pm3386_port_reg_write(port, 0x303, 0x100, temp); +} + +void pm3386_enable_tx(int port) +{ + u16 temp; + + temp = pm3386_port_reg_read(port, 0x303, 0x100); + temp |= 0x4000; + pm3386_port_reg_write(port, 0x303, 0x100, temp); +} + +void pm3386_disable_tx(int port) +{ + u16 temp; + + temp = pm3386_port_reg_read(port, 0x303, 0x100); + temp &= 0xbfff; + pm3386_port_reg_write(port, 0x303, 0x100, temp); +} + +MODULE_LICENSE("GPL"); diff --git a/drivers/net/ixp2000/pm3386.h b/drivers/net/ixp2000/pm3386.h new file mode 100644 index 000000000000..fe92bb056ac4 --- /dev/null +++ b/drivers/net/ixp2000/pm3386.h @@ -0,0 +1,28 @@ +/* + * Helper functions for the PM3386s 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. + */ + +#ifndef __PM3386_H +#define __PM3386_H + +void pm3386_reset(void); +void pm3386_init_port(int port); +void pm3386_get_mac(int port, u8 *mac); +void pm3386_set_mac(int port, u8 *mac); +void pm3386_get_stats(int port, struct net_device_stats *stats); +void pm3386_set_carrier(int port, int state); +int pm3386_is_link_up(int port); +void pm3386_enable_rx(int port); +void pm3386_disable_rx(int port); +void pm3386_enable_tx(int port); +void pm3386_disable_tx(int port); + + +#endif |