F: arch/arm/mach-ixp4xx/include/mach/npe.h
F: arch/arm/mach-ixp4xx/ixp4xx_qmgr.c
F: arch/arm/mach-ixp4xx/ixp4xx_npe.c
-F: drivers/net/arm/ixp4xx_eth.c
+F: drivers/net/ethernet/xscale/ixp4xx_eth.c
F: drivers/net/wan/ixp4xx_hss.c
INTEL IXP4XX RANDOM NUMBER GENERATOR SUPPORT
M: Lennert Buytenhek <kernel@wantstofly.org>
L: netdev@vger.kernel.org
S: Maintained
-F: drivers/net/ixp2000/
+F: drivers/net/ethernet/xscale/ixp2000/
INTEL ETHERNET DRIVERS (e100/e1000/e1000e/igb/igbvf/ixgb/ixgbe/ixgbevf)
M: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
To compile this driver as a module, choose M here: the module
will be called ipg. This is recommended.
-source "drivers/net/ixp2000/Kconfig"
-
config HAMACHI
tristate "Packet Engines Hamachi GNIC-II support"
depends on PCI
obj-$(CONFIG_HAMRADIO) += hamradio/
obj-$(CONFIG_IRDA) += irda/
obj-$(CONFIG_ETRAX_ETHERNET) += cris/
-obj-$(CONFIG_ENP2611_MSF_NET) += ixp2000/
obj-$(CONFIG_NETCONSOLE) += netconsole.o
This is a driver for the ethernet hardware included in EP93xx CPUs.
Say Y if you are building a kernel for EP93xx based devices.
-config IXP4XX_ETH
- tristate "Intel IXP4xx Ethernet support"
- depends on ARM && ARCH_IXP4XX && IXP4XX_NPE && IXP4XX_QMGR
- select PHYLIB
- help
- Say Y here if you want to use built-in Ethernet ports
- on IXP4xx processor.
-
config W90P910_ETH
tristate "Nuvoton w90p910 Ethernet support"
depends on ARM && ARCH_W90X900
obj-$(CONFIG_ARM_AT91_ETHER) += at91_ether.o
obj-$(CONFIG_ARM_KS8695_ETHER) += ks8695net.o
obj-$(CONFIG_EP93XX_ETH) += ep93xx_eth.o
-obj-$(CONFIG_IXP4XX_ETH) += ixp4xx_eth.o
obj-$(CONFIG_W90P910_ETH) += w90p910_ether.o
+++ /dev/null
-/*
- * Intel IXP4xx Ethernet driver for Linux
- *
- * Copyright (C) 2007 Krzysztof Halasa <khc@pm.waw.pl>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License
- * as published by the Free Software Foundation.
- *
- * Ethernet port config (0x00 is not present on IXP42X):
- *
- * logical port 0x00 0x10 0x20
- * NPE 0 (NPE-A) 1 (NPE-B) 2 (NPE-C)
- * physical PortId 2 0 1
- * TX queue 23 24 25
- * RX-free queue 26 27 28
- * TX-done queue is always 31, per-port RX and TX-ready queues are configurable
- *
- *
- * Queue entries:
- * bits 0 -> 1 - NPE ID (RX and TX-done)
- * bits 0 -> 2 - priority (TX, per 802.1D)
- * bits 3 -> 4 - port ID (user-set?)
- * bits 5 -> 31 - physical descriptor address
- */
-
-#include <linux/delay.h>
-#include <linux/dma-mapping.h>
-#include <linux/dmapool.h>
-#include <linux/etherdevice.h>
-#include <linux/io.h>
-#include <linux/kernel.h>
-#include <linux/net_tstamp.h>
-#include <linux/phy.h>
-#include <linux/platform_device.h>
-#include <linux/ptp_classify.h>
-#include <linux/slab.h>
-#include <mach/ixp46x_ts.h>
-#include <mach/npe.h>
-#include <mach/qmgr.h>
-
-#define DEBUG_DESC 0
-#define DEBUG_RX 0
-#define DEBUG_TX 0
-#define DEBUG_PKT_BYTES 0
-#define DEBUG_MDIO 0
-#define DEBUG_CLOSE 0
-
-#define DRV_NAME "ixp4xx_eth"
-
-#define MAX_NPES 3
-
-#define RX_DESCS 64 /* also length of all RX queues */
-#define TX_DESCS 16 /* also length of all TX queues */
-#define TXDONE_QUEUE_LEN 64 /* dwords */
-
-#define POOL_ALLOC_SIZE (sizeof(struct desc) * (RX_DESCS + TX_DESCS))
-#define REGS_SIZE 0x1000
-#define MAX_MRU 1536 /* 0x600 */
-#define RX_BUFF_SIZE ALIGN((NET_IP_ALIGN) + MAX_MRU, 4)
-
-#define NAPI_WEIGHT 16
-#define MDIO_INTERVAL (3 * HZ)
-#define MAX_MDIO_RETRIES 100 /* microseconds, typically 30 cycles */
-#define MAX_CLOSE_WAIT 1000 /* microseconds, typically 2-3 cycles */
-
-#define NPE_ID(port_id) ((port_id) >> 4)
-#define PHYSICAL_ID(port_id) ((NPE_ID(port_id) + 2) % 3)
-#define TX_QUEUE(port_id) (NPE_ID(port_id) + 23)
-#define RXFREE_QUEUE(port_id) (NPE_ID(port_id) + 26)
-#define TXDONE_QUEUE 31
-
-#define PTP_SLAVE_MODE 1
-#define PTP_MASTER_MODE 2
-#define PORT2CHANNEL(p) NPE_ID(p->id)
-
-/* TX Control Registers */
-#define TX_CNTRL0_TX_EN 0x01
-#define TX_CNTRL0_HALFDUPLEX 0x02
-#define TX_CNTRL0_RETRY 0x04
-#define TX_CNTRL0_PAD_EN 0x08
-#define TX_CNTRL0_APPEND_FCS 0x10
-#define TX_CNTRL0_2DEFER 0x20
-#define TX_CNTRL0_RMII 0x40 /* reduced MII */
-#define TX_CNTRL1_RETRIES 0x0F /* 4 bits */
-
-/* RX Control Registers */
-#define RX_CNTRL0_RX_EN 0x01
-#define RX_CNTRL0_PADSTRIP_EN 0x02
-#define RX_CNTRL0_SEND_FCS 0x04
-#define RX_CNTRL0_PAUSE_EN 0x08
-#define RX_CNTRL0_LOOP_EN 0x10
-#define RX_CNTRL0_ADDR_FLTR_EN 0x20
-#define RX_CNTRL0_RX_RUNT_EN 0x40
-#define RX_CNTRL0_BCAST_DIS 0x80
-#define RX_CNTRL1_DEFER_EN 0x01
-
-/* Core Control Register */
-#define CORE_RESET 0x01
-#define CORE_RX_FIFO_FLUSH 0x02
-#define CORE_TX_FIFO_FLUSH 0x04
-#define CORE_SEND_JAM 0x08
-#define CORE_MDC_EN 0x10 /* MDIO using NPE-B ETH-0 only */
-
-#define DEFAULT_TX_CNTRL0 (TX_CNTRL0_TX_EN | TX_CNTRL0_RETRY | \
- TX_CNTRL0_PAD_EN | TX_CNTRL0_APPEND_FCS | \
- TX_CNTRL0_2DEFER)
-#define DEFAULT_RX_CNTRL0 RX_CNTRL0_RX_EN
-#define DEFAULT_CORE_CNTRL CORE_MDC_EN
-
-
-/* NPE message codes */
-#define NPE_GETSTATUS 0x00
-#define NPE_EDB_SETPORTADDRESS 0x01
-#define NPE_EDB_GETMACADDRESSDATABASE 0x02
-#define NPE_EDB_SETMACADDRESSSDATABASE 0x03
-#define NPE_GETSTATS 0x04
-#define NPE_RESETSTATS 0x05
-#define NPE_SETMAXFRAMELENGTHS 0x06
-#define NPE_VLAN_SETRXTAGMODE 0x07
-#define NPE_VLAN_SETDEFAULTRXVID 0x08
-#define NPE_VLAN_SETPORTVLANTABLEENTRY 0x09
-#define NPE_VLAN_SETPORTVLANTABLERANGE 0x0A
-#define NPE_VLAN_SETRXQOSENTRY 0x0B
-#define NPE_VLAN_SETPORTIDEXTRACTIONMODE 0x0C
-#define NPE_STP_SETBLOCKINGSTATE 0x0D
-#define NPE_FW_SETFIREWALLMODE 0x0E
-#define NPE_PC_SETFRAMECONTROLDURATIONID 0x0F
-#define NPE_PC_SETAPMACTABLE 0x11
-#define NPE_SETLOOPBACK_MODE 0x12
-#define NPE_PC_SETBSSIDTABLE 0x13
-#define NPE_ADDRESS_FILTER_CONFIG 0x14
-#define NPE_APPENDFCSCONFIG 0x15
-#define NPE_NOTIFY_MAC_RECOVERY_DONE 0x16
-#define NPE_MAC_RECOVERY_START 0x17
-
-
-#ifdef __ARMEB__
-typedef struct sk_buff buffer_t;
-#define free_buffer dev_kfree_skb
-#define free_buffer_irq dev_kfree_skb_irq
-#else
-typedef void buffer_t;
-#define free_buffer kfree
-#define free_buffer_irq kfree
-#endif
-
-struct eth_regs {
- u32 tx_control[2], __res1[2]; /* 000 */
- u32 rx_control[2], __res2[2]; /* 010 */
- u32 random_seed, __res3[3]; /* 020 */
- u32 partial_empty_threshold, __res4; /* 030 */
- u32 partial_full_threshold, __res5; /* 038 */
- u32 tx_start_bytes, __res6[3]; /* 040 */
- u32 tx_deferral, rx_deferral, __res7[2];/* 050 */
- u32 tx_2part_deferral[2], __res8[2]; /* 060 */
- u32 slot_time, __res9[3]; /* 070 */
- u32 mdio_command[4]; /* 080 */
- u32 mdio_status[4]; /* 090 */
- u32 mcast_mask[6], __res10[2]; /* 0A0 */
- u32 mcast_addr[6], __res11[2]; /* 0C0 */
- u32 int_clock_threshold, __res12[3]; /* 0E0 */
- u32 hw_addr[6], __res13[61]; /* 0F0 */
- u32 core_control; /* 1FC */
-};
-
-struct port {
- struct resource *mem_res;
- struct eth_regs __iomem *regs;
- struct npe *npe;
- struct net_device *netdev;
- struct napi_struct napi;
- struct phy_device *phydev;
- struct eth_plat_info *plat;
- buffer_t *rx_buff_tab[RX_DESCS], *tx_buff_tab[TX_DESCS];
- struct desc *desc_tab; /* coherent */
- u32 desc_tab_phys;
- int id; /* logical port ID */
- int speed, duplex;
- u8 firmware[4];
- int hwts_tx_en;
- int hwts_rx_en;
-};
-
-/* NPE message structure */
-struct msg {
-#ifdef __ARMEB__
- u8 cmd, eth_id, byte2, byte3;
- u8 byte4, byte5, byte6, byte7;
-#else
- u8 byte3, byte2, eth_id, cmd;
- u8 byte7, byte6, byte5, byte4;
-#endif
-};
-
-/* Ethernet packet descriptor */
-struct desc {
- u32 next; /* pointer to next buffer, unused */
-
-#ifdef __ARMEB__
- u16 buf_len; /* buffer length */
- u16 pkt_len; /* packet length */
- u32 data; /* pointer to data buffer in RAM */
- u8 dest_id;
- u8 src_id;
- u16 flags;
- u8 qos;
- u8 padlen;
- u16 vlan_tci;
-#else
- u16 pkt_len; /* packet length */
- u16 buf_len; /* buffer length */
- u32 data; /* pointer to data buffer in RAM */
- u16 flags;
- u8 src_id;
- u8 dest_id;
- u16 vlan_tci;
- u8 padlen;
- u8 qos;
-#endif
-
-#ifdef __ARMEB__
- u8 dst_mac_0, dst_mac_1, dst_mac_2, dst_mac_3;
- u8 dst_mac_4, dst_mac_5, src_mac_0, src_mac_1;
- u8 src_mac_2, src_mac_3, src_mac_4, src_mac_5;
-#else
- u8 dst_mac_3, dst_mac_2, dst_mac_1, dst_mac_0;
- u8 src_mac_1, src_mac_0, dst_mac_5, dst_mac_4;
- u8 src_mac_5, src_mac_4, src_mac_3, src_mac_2;
-#endif
-};
-
-
-#define rx_desc_phys(port, n) ((port)->desc_tab_phys + \
- (n) * sizeof(struct desc))
-#define rx_desc_ptr(port, n) (&(port)->desc_tab[n])
-
-#define tx_desc_phys(port, n) ((port)->desc_tab_phys + \
- ((n) + RX_DESCS) * sizeof(struct desc))
-#define tx_desc_ptr(port, n) (&(port)->desc_tab[(n) + RX_DESCS])
-
-#ifndef __ARMEB__
-static inline void memcpy_swab32(u32 *dest, u32 *src, int cnt)
-{
- int i;
- for (i = 0; i < cnt; i++)
- dest[i] = swab32(src[i]);
-}
-#endif
-
-static spinlock_t mdio_lock;
-static struct eth_regs __iomem *mdio_regs; /* mdio command and status only */
-static struct mii_bus *mdio_bus;
-static int ports_open;
-static struct port *npe_port_tab[MAX_NPES];
-static struct dma_pool *dma_pool;
-
-static struct sock_filter ptp_filter[] = {
- PTP_FILTER
-};
-
-static int ixp_ptp_match(struct sk_buff *skb, u16 uid_hi, u32 uid_lo, u16 seqid)
-{
- u8 *data = skb->data;
- unsigned int offset;
- u16 *hi, *id;
- u32 lo;
-
- if (sk_run_filter(skb, ptp_filter) != PTP_CLASS_V1_IPV4)
- return 0;
-
- offset = ETH_HLEN + IPV4_HLEN(data) + UDP_HLEN;
-
- if (skb->len < offset + OFF_PTP_SEQUENCE_ID + sizeof(seqid))
- return 0;
-
- hi = (u16 *)(data + offset + OFF_PTP_SOURCE_UUID);
- id = (u16 *)(data + offset + OFF_PTP_SEQUENCE_ID);
-
- memcpy(&lo, &hi[1], sizeof(lo));
-
- return (uid_hi == ntohs(*hi) &&
- uid_lo == ntohl(lo) &&
- seqid == ntohs(*id));
-}
-
-static void ixp_rx_timestamp(struct port *port, struct sk_buff *skb)
-{
- struct skb_shared_hwtstamps *shhwtstamps;
- struct ixp46x_ts_regs *regs;
- u64 ns;
- u32 ch, hi, lo, val;
- u16 uid, seq;
-
- if (!port->hwts_rx_en)
- return;
-
- ch = PORT2CHANNEL(port);
-
- regs = (struct ixp46x_ts_regs __iomem *) IXP4XX_TIMESYNC_BASE_VIRT;
-
- val = __raw_readl(®s->channel[ch].ch_event);
-
- if (!(val & RX_SNAPSHOT_LOCKED))
- return;
-
- lo = __raw_readl(®s->channel[ch].src_uuid_lo);
- hi = __raw_readl(®s->channel[ch].src_uuid_hi);
-
- uid = hi & 0xffff;
- seq = (hi >> 16) & 0xffff;
-
- if (!ixp_ptp_match(skb, htons(uid), htonl(lo), htons(seq)))
- goto out;
-
- lo = __raw_readl(®s->channel[ch].rx_snap_lo);
- hi = __raw_readl(®s->channel[ch].rx_snap_hi);
- ns = ((u64) hi) << 32;
- ns |= lo;
- ns <<= TICKS_NS_SHIFT;
-
- shhwtstamps = skb_hwtstamps(skb);
- memset(shhwtstamps, 0, sizeof(*shhwtstamps));
- shhwtstamps->hwtstamp = ns_to_ktime(ns);
-out:
- __raw_writel(RX_SNAPSHOT_LOCKED, ®s->channel[ch].ch_event);
-}
-
-static void ixp_tx_timestamp(struct port *port, struct sk_buff *skb)
-{
- struct skb_shared_hwtstamps shhwtstamps;
- struct ixp46x_ts_regs *regs;
- struct skb_shared_info *shtx;
- u64 ns;
- u32 ch, cnt, hi, lo, val;
-
- shtx = skb_shinfo(skb);
- if (unlikely(shtx->tx_flags & SKBTX_HW_TSTAMP && port->hwts_tx_en))
- shtx->tx_flags |= SKBTX_IN_PROGRESS;
- else
- return;
-
- ch = PORT2CHANNEL(port);
-
- regs = (struct ixp46x_ts_regs __iomem *) IXP4XX_TIMESYNC_BASE_VIRT;
-
- /*
- * This really stinks, but we have to poll for the Tx time stamp.
- * Usually, the time stamp is ready after 4 to 6 microseconds.
- */
- for (cnt = 0; cnt < 100; cnt++) {
- val = __raw_readl(®s->channel[ch].ch_event);
- if (val & TX_SNAPSHOT_LOCKED)
- break;
- udelay(1);
- }
- if (!(val & TX_SNAPSHOT_LOCKED)) {
- shtx->tx_flags &= ~SKBTX_IN_PROGRESS;
- return;
- }
-
- lo = __raw_readl(®s->channel[ch].tx_snap_lo);
- hi = __raw_readl(®s->channel[ch].tx_snap_hi);
- ns = ((u64) hi) << 32;
- ns |= lo;
- ns <<= TICKS_NS_SHIFT;
-
- memset(&shhwtstamps, 0, sizeof(shhwtstamps));
- shhwtstamps.hwtstamp = ns_to_ktime(ns);
- skb_tstamp_tx(skb, &shhwtstamps);
-
- __raw_writel(TX_SNAPSHOT_LOCKED, ®s->channel[ch].ch_event);
-}
-
-static int hwtstamp_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
-{
- struct hwtstamp_config cfg;
- struct ixp46x_ts_regs *regs;
- struct port *port = netdev_priv(netdev);
- int ch;
-
- if (copy_from_user(&cfg, ifr->ifr_data, sizeof(cfg)))
- return -EFAULT;
-
- if (cfg.flags) /* reserved for future extensions */
- return -EINVAL;
-
- ch = PORT2CHANNEL(port);
- regs = (struct ixp46x_ts_regs __iomem *) IXP4XX_TIMESYNC_BASE_VIRT;
-
- switch (cfg.tx_type) {
- case HWTSTAMP_TX_OFF:
- port->hwts_tx_en = 0;
- break;
- case HWTSTAMP_TX_ON:
- port->hwts_tx_en = 1;
- break;
- default:
- return -ERANGE;
- }
-
- switch (cfg.rx_filter) {
- case HWTSTAMP_FILTER_NONE:
- port->hwts_rx_en = 0;
- break;
- case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
- port->hwts_rx_en = PTP_SLAVE_MODE;
- __raw_writel(0, ®s->channel[ch].ch_control);
- break;
- case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
- port->hwts_rx_en = PTP_MASTER_MODE;
- __raw_writel(MASTER_MODE, ®s->channel[ch].ch_control);
- break;
- default:
- return -ERANGE;
- }
-
- /* Clear out any old time stamps. */
- __raw_writel(TX_SNAPSHOT_LOCKED | RX_SNAPSHOT_LOCKED,
- ®s->channel[ch].ch_event);
-
- return copy_to_user(ifr->ifr_data, &cfg, sizeof(cfg)) ? -EFAULT : 0;
-}
-
-static int ixp4xx_mdio_cmd(struct mii_bus *bus, int phy_id, int location,
- int write, u16 cmd)
-{
- int cycles = 0;
-
- if (__raw_readl(&mdio_regs->mdio_command[3]) & 0x80) {
- printk(KERN_ERR "%s: MII not ready to transmit\n", bus->name);
- return -1;
- }
-
- if (write) {
- __raw_writel(cmd & 0xFF, &mdio_regs->mdio_command[0]);
- __raw_writel(cmd >> 8, &mdio_regs->mdio_command[1]);
- }
- __raw_writel(((phy_id << 5) | location) & 0xFF,
- &mdio_regs->mdio_command[2]);
- __raw_writel((phy_id >> 3) | (write << 2) | 0x80 /* GO */,
- &mdio_regs->mdio_command[3]);
-
- while ((cycles < MAX_MDIO_RETRIES) &&
- (__raw_readl(&mdio_regs->mdio_command[3]) & 0x80)) {
- udelay(1);
- cycles++;
- }
-
- if (cycles == MAX_MDIO_RETRIES) {
- printk(KERN_ERR "%s #%i: MII write failed\n", bus->name,
- phy_id);
- return -1;
- }
-
-#if DEBUG_MDIO
- printk(KERN_DEBUG "%s #%i: mdio_%s() took %i cycles\n", bus->name,
- phy_id, write ? "write" : "read", cycles);
-#endif
-
- if (write)
- return 0;
-
- if (__raw_readl(&mdio_regs->mdio_status[3]) & 0x80) {
-#if DEBUG_MDIO
- printk(KERN_DEBUG "%s #%i: MII read failed\n", bus->name,
- phy_id);
-#endif
- return 0xFFFF; /* don't return error */
- }
-
- return (__raw_readl(&mdio_regs->mdio_status[0]) & 0xFF) |
- ((__raw_readl(&mdio_regs->mdio_status[1]) & 0xFF) << 8);
-}
-
-static int ixp4xx_mdio_read(struct mii_bus *bus, int phy_id, int location)
-{
- unsigned long flags;
- int ret;
-
- spin_lock_irqsave(&mdio_lock, flags);
- ret = ixp4xx_mdio_cmd(bus, phy_id, location, 0, 0);
- spin_unlock_irqrestore(&mdio_lock, flags);
-#if DEBUG_MDIO
- printk(KERN_DEBUG "%s #%i: MII read [%i] -> 0x%X\n", bus->name,
- phy_id, location, ret);
-#endif
- return ret;
-}
-
-static int ixp4xx_mdio_write(struct mii_bus *bus, int phy_id, int location,
- u16 val)
-{
- unsigned long flags;
- int ret;
-
- spin_lock_irqsave(&mdio_lock, flags);
- ret = ixp4xx_mdio_cmd(bus, phy_id, location, 1, val);
- spin_unlock_irqrestore(&mdio_lock, flags);
-#if DEBUG_MDIO
- printk(KERN_DEBUG "%s #%i: MII write [%i] <- 0x%X, err = %i\n",
- bus->name, phy_id, location, val, ret);
-#endif
- return ret;
-}
-
-static int ixp4xx_mdio_register(void)
-{
- int err;
-
- if (!(mdio_bus = mdiobus_alloc()))
- return -ENOMEM;
-
- if (cpu_is_ixp43x()) {
- /* IXP43x lacks NPE-B and uses NPE-C for MII PHY access */
- if (!(ixp4xx_read_feature_bits() & IXP4XX_FEATURE_NPEC_ETH))
- return -ENODEV;
- mdio_regs = (struct eth_regs __iomem *)IXP4XX_EthC_BASE_VIRT;
- } else {
- /* All MII PHY accesses use NPE-B Ethernet registers */
- if (!(ixp4xx_read_feature_bits() & IXP4XX_FEATURE_NPEB_ETH0))
- return -ENODEV;
- mdio_regs = (struct eth_regs __iomem *)IXP4XX_EthB_BASE_VIRT;
- }
-
- __raw_writel(DEFAULT_CORE_CNTRL, &mdio_regs->core_control);
- spin_lock_init(&mdio_lock);
- mdio_bus->name = "IXP4xx MII Bus";
- mdio_bus->read = &ixp4xx_mdio_read;
- mdio_bus->write = &ixp4xx_mdio_write;
- strcpy(mdio_bus->id, "0");
-
- if ((err = mdiobus_register(mdio_bus)))
- mdiobus_free(mdio_bus);
- return err;
-}
-
-static void ixp4xx_mdio_remove(void)
-{
- mdiobus_unregister(mdio_bus);
- mdiobus_free(mdio_bus);
-}
-
-
-static void ixp4xx_adjust_link(struct net_device *dev)
-{
- struct port *port = netdev_priv(dev);
- struct phy_device *phydev = port->phydev;
-
- if (!phydev->link) {
- if (port->speed) {
- port->speed = 0;
- printk(KERN_INFO "%s: link down\n", dev->name);
- }
- return;
- }
-
- if (port->speed == phydev->speed && port->duplex == phydev->duplex)
- return;
-
- port->speed = phydev->speed;
- port->duplex = phydev->duplex;
-
- if (port->duplex)
- __raw_writel(DEFAULT_TX_CNTRL0 & ~TX_CNTRL0_HALFDUPLEX,
- &port->regs->tx_control[0]);
- else
- __raw_writel(DEFAULT_TX_CNTRL0 | TX_CNTRL0_HALFDUPLEX,
- &port->regs->tx_control[0]);
-
- printk(KERN_INFO "%s: link up, speed %u Mb/s, %s duplex\n",
- dev->name, port->speed, port->duplex ? "full" : "half");
-}
-
-
-static inline void debug_pkt(struct net_device *dev, const char *func,
- u8 *data, int len)
-{
-#if DEBUG_PKT_BYTES
- int i;
-
- printk(KERN_DEBUG "%s: %s(%i) ", dev->name, func, len);
- for (i = 0; i < len; i++) {
- if (i >= DEBUG_PKT_BYTES)
- break;
- printk("%s%02X",
- ((i == 6) || (i == 12) || (i >= 14)) ? " " : "",
- data[i]);
- }
- printk("\n");
-#endif
-}
-
-
-static inline void debug_desc(u32 phys, struct desc *desc)
-{
-#if DEBUG_DESC
- printk(KERN_DEBUG "%X: %X %3X %3X %08X %2X < %2X %4X %X"
- " %X %X %02X%02X%02X%02X%02X%02X < %02X%02X%02X%02X%02X%02X\n",
- phys, desc->next, desc->buf_len, desc->pkt_len,
- desc->data, desc->dest_id, desc->src_id, desc->flags,
- desc->qos, desc->padlen, desc->vlan_tci,
- desc->dst_mac_0, desc->dst_mac_1, desc->dst_mac_2,
- desc->dst_mac_3, desc->dst_mac_4, desc->dst_mac_5,
- desc->src_mac_0, desc->src_mac_1, desc->src_mac_2,
- desc->src_mac_3, desc->src_mac_4, desc->src_mac_5);
-#endif
-}
-
-static inline int queue_get_desc(unsigned int queue, struct port *port,
- int is_tx)
-{
- u32 phys, tab_phys, n_desc;
- struct desc *tab;
-
- if (!(phys = qmgr_get_entry(queue)))
- return -1;
-
- phys &= ~0x1F; /* mask out non-address bits */
- tab_phys = is_tx ? tx_desc_phys(port, 0) : rx_desc_phys(port, 0);
- tab = is_tx ? tx_desc_ptr(port, 0) : rx_desc_ptr(port, 0);
- n_desc = (phys - tab_phys) / sizeof(struct desc);
- BUG_ON(n_desc >= (is_tx ? TX_DESCS : RX_DESCS));
- debug_desc(phys, &tab[n_desc]);
- BUG_ON(tab[n_desc].next);
- return n_desc;
-}
-
-static inline void queue_put_desc(unsigned int queue, u32 phys,
- struct desc *desc)
-{
- debug_desc(phys, desc);
- BUG_ON(phys & 0x1F);
- qmgr_put_entry(queue, phys);
- /* Don't check for queue overflow here, we've allocated sufficient
- length and queues >= 32 don't support this check anyway. */
-}
-
-
-static inline void dma_unmap_tx(struct port *port, struct desc *desc)
-{
-#ifdef __ARMEB__
- dma_unmap_single(&port->netdev->dev, desc->data,
- desc->buf_len, DMA_TO_DEVICE);
-#else
- dma_unmap_single(&port->netdev->dev, desc->data & ~3,
- ALIGN((desc->data & 3) + desc->buf_len, 4),
- DMA_TO_DEVICE);
-#endif
-}
-
-
-static void eth_rx_irq(void *pdev)
-{
- struct net_device *dev = pdev;
- struct port *port = netdev_priv(dev);
-
-#if DEBUG_RX
- printk(KERN_DEBUG "%s: eth_rx_irq\n", dev->name);
-#endif
- qmgr_disable_irq(port->plat->rxq);
- napi_schedule(&port->napi);
-}
-
-static int eth_poll(struct napi_struct *napi, int budget)
-{
- struct port *port = container_of(napi, struct port, napi);
- struct net_device *dev = port->netdev;
- unsigned int rxq = port->plat->rxq, rxfreeq = RXFREE_QUEUE(port->id);
- int received = 0;
-
-#if DEBUG_RX
- printk(KERN_DEBUG "%s: eth_poll\n", dev->name);
-#endif
-
- while (received < budget) {
- struct sk_buff *skb;
- struct desc *desc;
- int n;
-#ifdef __ARMEB__
- struct sk_buff *temp;
- u32 phys;
-#endif
-
- if ((n = queue_get_desc(rxq, port, 0)) < 0) {
-#if DEBUG_RX
- printk(KERN_DEBUG "%s: eth_poll napi_complete\n",
- dev->name);
-#endif
- napi_complete(napi);
- qmgr_enable_irq(rxq);
- if (!qmgr_stat_below_low_watermark(rxq) &&
- napi_reschedule(napi)) { /* not empty again */
-#if DEBUG_RX
- printk(KERN_DEBUG "%s: eth_poll"
- " napi_reschedule successed\n",
- dev->name);
-#endif
- qmgr_disable_irq(rxq);
- continue;
- }
-#if DEBUG_RX
- printk(KERN_DEBUG "%s: eth_poll all done\n",
- dev->name);
-#endif
- return received; /* all work done */
- }
-
- desc = rx_desc_ptr(port, n);
-
-#ifdef __ARMEB__
- if ((skb = netdev_alloc_skb(dev, RX_BUFF_SIZE))) {
- phys = dma_map_single(&dev->dev, skb->data,
- RX_BUFF_SIZE, DMA_FROM_DEVICE);
- if (dma_mapping_error(&dev->dev, phys)) {
- dev_kfree_skb(skb);
- skb = NULL;
- }
- }
-#else
- skb = netdev_alloc_skb(dev,
- ALIGN(NET_IP_ALIGN + desc->pkt_len, 4));
-#endif
-
- if (!skb) {
- dev->stats.rx_dropped++;
- /* put the desc back on RX-ready queue */
- desc->buf_len = MAX_MRU;
- desc->pkt_len = 0;
- queue_put_desc(rxfreeq, rx_desc_phys(port, n), desc);
- continue;
- }
-
- /* process received frame */
-#ifdef __ARMEB__
- temp = skb;
- skb = port->rx_buff_tab[n];
- dma_unmap_single(&dev->dev, desc->data - NET_IP_ALIGN,
- RX_BUFF_SIZE, DMA_FROM_DEVICE);
-#else
- dma_sync_single_for_cpu(&dev->dev, desc->data - NET_IP_ALIGN,
- RX_BUFF_SIZE, DMA_FROM_DEVICE);
- memcpy_swab32((u32 *)skb->data, (u32 *)port->rx_buff_tab[n],
- ALIGN(NET_IP_ALIGN + desc->pkt_len, 4) / 4);
-#endif
- skb_reserve(skb, NET_IP_ALIGN);
- skb_put(skb, desc->pkt_len);
-
- debug_pkt(dev, "eth_poll", skb->data, skb->len);
-
- ixp_rx_timestamp(port, skb);
- skb->protocol = eth_type_trans(skb, dev);
- dev->stats.rx_packets++;
- dev->stats.rx_bytes += skb->len;
- netif_receive_skb(skb);
-
- /* put the new buffer on RX-free queue */
-#ifdef __ARMEB__
- port->rx_buff_tab[n] = temp;
- desc->data = phys + NET_IP_ALIGN;
-#endif
- desc->buf_len = MAX_MRU;
- desc->pkt_len = 0;
- queue_put_desc(rxfreeq, rx_desc_phys(port, n), desc);
- received++;
- }
-
-#if DEBUG_RX
- printk(KERN_DEBUG "eth_poll(): end, not all work done\n");
-#endif
- return received; /* not all work done */
-}
-
-
-static void eth_txdone_irq(void *unused)
-{
- u32 phys;
-
-#if DEBUG_TX
- printk(KERN_DEBUG DRV_NAME ": eth_txdone_irq\n");
-#endif
- while ((phys = qmgr_get_entry(TXDONE_QUEUE)) != 0) {
- u32 npe_id, n_desc;
- struct port *port;
- struct desc *desc;
- int start;
-
- npe_id = phys & 3;
- BUG_ON(npe_id >= MAX_NPES);
- port = npe_port_tab[npe_id];
- BUG_ON(!port);
- phys &= ~0x1F; /* mask out non-address bits */
- n_desc = (phys - tx_desc_phys(port, 0)) / sizeof(struct desc);
- BUG_ON(n_desc >= TX_DESCS);
- desc = tx_desc_ptr(port, n_desc);
- debug_desc(phys, desc);
-
- if (port->tx_buff_tab[n_desc]) { /* not the draining packet */
- port->netdev->stats.tx_packets++;
- port->netdev->stats.tx_bytes += desc->pkt_len;
-
- dma_unmap_tx(port, desc);
-#if DEBUG_TX
- printk(KERN_DEBUG "%s: eth_txdone_irq free %p\n",
- port->netdev->name, port->tx_buff_tab[n_desc]);
-#endif
- free_buffer_irq(port->tx_buff_tab[n_desc]);
- port->tx_buff_tab[n_desc] = NULL;
- }
-
- start = qmgr_stat_below_low_watermark(port->plat->txreadyq);
- queue_put_desc(port->plat->txreadyq, phys, desc);
- if (start) { /* TX-ready queue was empty */
-#if DEBUG_TX
- printk(KERN_DEBUG "%s: eth_txdone_irq xmit ready\n",
- port->netdev->name);
-#endif
- netif_wake_queue(port->netdev);
- }
- }
-}
-
-static int eth_xmit(struct sk_buff *skb, struct net_device *dev)
-{
- struct port *port = netdev_priv(dev);
- unsigned int txreadyq = port->plat->txreadyq;
- int len, offset, bytes, n;
- void *mem;
- u32 phys;
- struct desc *desc;
-
-#if DEBUG_TX
- printk(KERN_DEBUG "%s: eth_xmit\n", dev->name);
-#endif
-
- if (unlikely(skb->len > MAX_MRU)) {
- dev_kfree_skb(skb);
- dev->stats.tx_errors++;
- return NETDEV_TX_OK;
- }
-
- debug_pkt(dev, "eth_xmit", skb->data, skb->len);
-
- len = skb->len;
-#ifdef __ARMEB__
- offset = 0; /* no need to keep alignment */
- bytes = len;
- mem = skb->data;
-#else
- offset = (int)skb->data & 3; /* keep 32-bit alignment */
- bytes = ALIGN(offset + len, 4);
- if (!(mem = kmalloc(bytes, GFP_ATOMIC))) {
- dev_kfree_skb(skb);
- dev->stats.tx_dropped++;
- return NETDEV_TX_OK;
- }
- memcpy_swab32(mem, (u32 *)((int)skb->data & ~3), bytes / 4);
-#endif
-
- phys = dma_map_single(&dev->dev, mem, bytes, DMA_TO_DEVICE);
- if (dma_mapping_error(&dev->dev, phys)) {
- dev_kfree_skb(skb);
-#ifndef __ARMEB__
- kfree(mem);
-#endif
- dev->stats.tx_dropped++;
- return NETDEV_TX_OK;
- }
-
- n = queue_get_desc(txreadyq, port, 1);
- BUG_ON(n < 0);
- desc = tx_desc_ptr(port, n);
-
-#ifdef __ARMEB__
- port->tx_buff_tab[n] = skb;
-#else
- port->tx_buff_tab[n] = mem;
-#endif
- desc->data = phys + offset;
- desc->buf_len = desc->pkt_len = len;
-
- /* NPE firmware pads short frames with zeros internally */
- wmb();
- queue_put_desc(TX_QUEUE(port->id), tx_desc_phys(port, n), desc);
-
- if (qmgr_stat_below_low_watermark(txreadyq)) { /* empty */
-#if DEBUG_TX
- printk(KERN_DEBUG "%s: eth_xmit queue full\n", dev->name);
-#endif
- netif_stop_queue(dev);
- /* we could miss TX ready interrupt */
- /* really empty in fact */
- if (!qmgr_stat_below_low_watermark(txreadyq)) {
-#if DEBUG_TX
- printk(KERN_DEBUG "%s: eth_xmit ready again\n",
- dev->name);
-#endif
- netif_wake_queue(dev);
- }
- }
-
-#if DEBUG_TX
- printk(KERN_DEBUG "%s: eth_xmit end\n", dev->name);
-#endif
-
- ixp_tx_timestamp(port, skb);
- skb_tx_timestamp(skb);
-
-#ifndef __ARMEB__
- dev_kfree_skb(skb);
-#endif
- return NETDEV_TX_OK;
-}
-
-
-static void eth_set_mcast_list(struct net_device *dev)
-{
- struct port *port = netdev_priv(dev);
- struct netdev_hw_addr *ha;
- u8 diffs[ETH_ALEN], *addr;
- int i;
- static const u8 allmulti[] = { 0x01, 0x00, 0x00, 0x00, 0x00, 0x00 };
-
- if (dev->flags & IFF_ALLMULTI) {
- for (i = 0; i < ETH_ALEN; i++) {
- __raw_writel(allmulti[i], &port->regs->mcast_addr[i]);
- __raw_writel(allmulti[i], &port->regs->mcast_mask[i]);
- }
- __raw_writel(DEFAULT_RX_CNTRL0 | RX_CNTRL0_ADDR_FLTR_EN,
- &port->regs->rx_control[0]);
- return;
- }
-
- if ((dev->flags & IFF_PROMISC) || netdev_mc_empty(dev)) {
- __raw_writel(DEFAULT_RX_CNTRL0 & ~RX_CNTRL0_ADDR_FLTR_EN,
- &port->regs->rx_control[0]);
- return;
- }
-
- memset(diffs, 0, ETH_ALEN);
-
- addr = NULL;
- netdev_for_each_mc_addr(ha, dev) {
- if (!addr)
- addr = ha->addr; /* first MAC address */
- for (i = 0; i < ETH_ALEN; i++)
- diffs[i] |= addr[i] ^ ha->addr[i];
- }
-
- for (i = 0; i < ETH_ALEN; i++) {
- __raw_writel(addr[i], &port->regs->mcast_addr[i]);
- __raw_writel(~diffs[i], &port->regs->mcast_mask[i]);
- }
-
- __raw_writel(DEFAULT_RX_CNTRL0 | RX_CNTRL0_ADDR_FLTR_EN,
- &port->regs->rx_control[0]);
-}
-
-
-static int eth_ioctl(struct net_device *dev, struct ifreq *req, int cmd)
-{
- struct port *port = netdev_priv(dev);
-
- if (!netif_running(dev))
- return -EINVAL;
-
- if (cpu_is_ixp46x() && cmd == SIOCSHWTSTAMP)
- return hwtstamp_ioctl(dev, req, cmd);
-
- return phy_mii_ioctl(port->phydev, req, cmd);
-}
-
-/* ethtool support */
-
-static void ixp4xx_get_drvinfo(struct net_device *dev,
- struct ethtool_drvinfo *info)
-{
- struct port *port = netdev_priv(dev);
- strcpy(info->driver, DRV_NAME);
- snprintf(info->fw_version, sizeof(info->fw_version), "%u:%u:%u:%u",
- port->firmware[0], port->firmware[1],
- port->firmware[2], port->firmware[3]);
- strcpy(info->bus_info, "internal");
-}
-
-static int ixp4xx_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
-{
- struct port *port = netdev_priv(dev);
- return phy_ethtool_gset(port->phydev, cmd);
-}
-
-static int ixp4xx_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
-{
- struct port *port = netdev_priv(dev);
- return phy_ethtool_sset(port->phydev, cmd);
-}
-
-static int ixp4xx_nway_reset(struct net_device *dev)
-{
- struct port *port = netdev_priv(dev);
- return phy_start_aneg(port->phydev);
-}
-
-static const struct ethtool_ops ixp4xx_ethtool_ops = {
- .get_drvinfo = ixp4xx_get_drvinfo,
- .get_settings = ixp4xx_get_settings,
- .set_settings = ixp4xx_set_settings,
- .nway_reset = ixp4xx_nway_reset,
- .get_link = ethtool_op_get_link,
-};
-
-
-static int request_queues(struct port *port)
-{
- int err;
-
- err = qmgr_request_queue(RXFREE_QUEUE(port->id), RX_DESCS, 0, 0,
- "%s:RX-free", port->netdev->name);
- if (err)
- return err;
-
- err = qmgr_request_queue(port->plat->rxq, RX_DESCS, 0, 0,
- "%s:RX", port->netdev->name);
- if (err)
- goto rel_rxfree;
-
- err = qmgr_request_queue(TX_QUEUE(port->id), TX_DESCS, 0, 0,
- "%s:TX", port->netdev->name);
- if (err)
- goto rel_rx;
-
- err = qmgr_request_queue(port->plat->txreadyq, TX_DESCS, 0, 0,
- "%s:TX-ready", port->netdev->name);
- if (err)
- goto rel_tx;
-
- /* TX-done queue handles skbs sent out by the NPEs */
- if (!ports_open) {
- err = qmgr_request_queue(TXDONE_QUEUE, TXDONE_QUEUE_LEN, 0, 0,
- "%s:TX-done", DRV_NAME);
- if (err)
- goto rel_txready;
- }
- return 0;
-
-rel_txready:
- qmgr_release_queue(port->plat->txreadyq);
-rel_tx:
- qmgr_release_queue(TX_QUEUE(port->id));
-rel_rx:
- qmgr_release_queue(port->plat->rxq);
-rel_rxfree:
- qmgr_release_queue(RXFREE_QUEUE(port->id));
- printk(KERN_DEBUG "%s: unable to request hardware queues\n",
- port->netdev->name);
- return err;
-}
-
-static void release_queues(struct port *port)
-{
- qmgr_release_queue(RXFREE_QUEUE(port->id));
- qmgr_release_queue(port->plat->rxq);
- qmgr_release_queue(TX_QUEUE(port->id));
- qmgr_release_queue(port->plat->txreadyq);
-
- if (!ports_open)
- qmgr_release_queue(TXDONE_QUEUE);
-}
-
-static int init_queues(struct port *port)
-{
- int i;
-
- if (!ports_open)
- if (!(dma_pool = dma_pool_create(DRV_NAME, NULL,
- POOL_ALLOC_SIZE, 32, 0)))
- return -ENOMEM;
-
- if (!(port->desc_tab = dma_pool_alloc(dma_pool, GFP_KERNEL,
- &port->desc_tab_phys)))
- return -ENOMEM;
- memset(port->desc_tab, 0, POOL_ALLOC_SIZE);
- memset(port->rx_buff_tab, 0, sizeof(port->rx_buff_tab)); /* tables */
- memset(port->tx_buff_tab, 0, sizeof(port->tx_buff_tab));
-
- /* Setup RX buffers */
- for (i = 0; i < RX_DESCS; i++) {
- struct desc *desc = rx_desc_ptr(port, i);
- buffer_t *buff; /* skb or kmalloc()ated memory */
- void *data;
-#ifdef __ARMEB__
- if (!(buff = netdev_alloc_skb(port->netdev, RX_BUFF_SIZE)))
- return -ENOMEM;
- data = buff->data;
-#else
- if (!(buff = kmalloc(RX_BUFF_SIZE, GFP_KERNEL)))
- return -ENOMEM;
- data = buff;
-#endif
- desc->buf_len = MAX_MRU;
- desc->data = dma_map_single(&port->netdev->dev, data,
- RX_BUFF_SIZE, DMA_FROM_DEVICE);
- if (dma_mapping_error(&port->netdev->dev, desc->data)) {
- free_buffer(buff);
- return -EIO;
- }
- desc->data += NET_IP_ALIGN;
- port->rx_buff_tab[i] = buff;
- }
-
- return 0;
-}
-
-static void destroy_queues(struct port *port)
-{
- int i;
-
- if (port->desc_tab) {
- for (i = 0; i < RX_DESCS; i++) {
- struct desc *desc = rx_desc_ptr(port, i);
- buffer_t *buff = port->rx_buff_tab[i];
- if (buff) {
- dma_unmap_single(&port->netdev->dev,
- desc->data - NET_IP_ALIGN,
- RX_BUFF_SIZE, DMA_FROM_DEVICE);
- free_buffer(buff);
- }
- }
- for (i = 0; i < TX_DESCS; i++) {
- struct desc *desc = tx_desc_ptr(port, i);
- buffer_t *buff = port->tx_buff_tab[i];
- if (buff) {
- dma_unmap_tx(port, desc);
- free_buffer(buff);
- }
- }
- dma_pool_free(dma_pool, port->desc_tab, port->desc_tab_phys);
- port->desc_tab = NULL;
- }
-
- if (!ports_open && dma_pool) {
- dma_pool_destroy(dma_pool);
- dma_pool = NULL;
- }
-}
-
-static int eth_open(struct net_device *dev)
-{
- struct port *port = netdev_priv(dev);
- struct npe *npe = port->npe;
- struct msg msg;
- int i, err;
-
- if (!npe_running(npe)) {
- err = npe_load_firmware(npe, npe_name(npe), &dev->dev);
- if (err)
- return err;
-
- if (npe_recv_message(npe, &msg, "ETH_GET_STATUS")) {
- printk(KERN_ERR "%s: %s not responding\n", dev->name,
- npe_name(npe));
- return -EIO;
- }
- port->firmware[0] = msg.byte4;
- port->firmware[1] = msg.byte5;
- port->firmware[2] = msg.byte6;
- port->firmware[3] = msg.byte7;
- }
-
- memset(&msg, 0, sizeof(msg));
- msg.cmd = NPE_VLAN_SETRXQOSENTRY;
- msg.eth_id = port->id;
- msg.byte5 = port->plat->rxq | 0x80;
- msg.byte7 = port->plat->rxq << 4;
- for (i = 0; i < 8; i++) {
- msg.byte3 = i;
- if (npe_send_recv_message(port->npe, &msg, "ETH_SET_RXQ"))
- return -EIO;
- }
-
- msg.cmd = NPE_EDB_SETPORTADDRESS;
- msg.eth_id = PHYSICAL_ID(port->id);
- msg.byte2 = dev->dev_addr[0];
- msg.byte3 = dev->dev_addr[1];
- msg.byte4 = dev->dev_addr[2];
- msg.byte5 = dev->dev_addr[3];
- msg.byte6 = dev->dev_addr[4];
- msg.byte7 = dev->dev_addr[5];
- if (npe_send_recv_message(port->npe, &msg, "ETH_SET_MAC"))
- return -EIO;
-
- memset(&msg, 0, sizeof(msg));
- msg.cmd = NPE_FW_SETFIREWALLMODE;
- msg.eth_id = port->id;
- if (npe_send_recv_message(port->npe, &msg, "ETH_SET_FIREWALL_MODE"))
- return -EIO;
-
- if ((err = request_queues(port)) != 0)
- return err;
-
- if ((err = init_queues(port)) != 0) {
- destroy_queues(port);
- release_queues(port);
- return err;
- }
-
- port->speed = 0; /* force "link up" message */
- phy_start(port->phydev);
-
- for (i = 0; i < ETH_ALEN; i++)
- __raw_writel(dev->dev_addr[i], &port->regs->hw_addr[i]);
- __raw_writel(0x08, &port->regs->random_seed);
- __raw_writel(0x12, &port->regs->partial_empty_threshold);
- __raw_writel(0x30, &port->regs->partial_full_threshold);
- __raw_writel(0x08, &port->regs->tx_start_bytes);
- __raw_writel(0x15, &port->regs->tx_deferral);
- __raw_writel(0x08, &port->regs->tx_2part_deferral[0]);
- __raw_writel(0x07, &port->regs->tx_2part_deferral[1]);
- __raw_writel(0x80, &port->regs->slot_time);
- __raw_writel(0x01, &port->regs->int_clock_threshold);
-
- /* Populate queues with buffers, no failure after this point */
- for (i = 0; i < TX_DESCS; i++)
- queue_put_desc(port->plat->txreadyq,
- tx_desc_phys(port, i), tx_desc_ptr(port, i));
-
- for (i = 0; i < RX_DESCS; i++)
- queue_put_desc(RXFREE_QUEUE(port->id),
- rx_desc_phys(port, i), rx_desc_ptr(port, i));
-
- __raw_writel(TX_CNTRL1_RETRIES, &port->regs->tx_control[1]);
- __raw_writel(DEFAULT_TX_CNTRL0, &port->regs->tx_control[0]);
- __raw_writel(0, &port->regs->rx_control[1]);
- __raw_writel(DEFAULT_RX_CNTRL0, &port->regs->rx_control[0]);
-
- napi_enable(&port->napi);
- eth_set_mcast_list(dev);
- netif_start_queue(dev);
-
- qmgr_set_irq(port->plat->rxq, QUEUE_IRQ_SRC_NOT_EMPTY,
- eth_rx_irq, dev);
- if (!ports_open) {
- qmgr_set_irq(TXDONE_QUEUE, QUEUE_IRQ_SRC_NOT_EMPTY,
- eth_txdone_irq, NULL);
- qmgr_enable_irq(TXDONE_QUEUE);
- }
- ports_open++;
- /* we may already have RX data, enables IRQ */
- napi_schedule(&port->napi);
- return 0;
-}
-
-static int eth_close(struct net_device *dev)
-{
- struct port *port = netdev_priv(dev);
- struct msg msg;
- int buffs = RX_DESCS; /* allocated RX buffers */
- int i;
-
- ports_open--;
- qmgr_disable_irq(port->plat->rxq);
- napi_disable(&port->napi);
- netif_stop_queue(dev);
-
- while (queue_get_desc(RXFREE_QUEUE(port->id), port, 0) >= 0)
- buffs--;
-
- memset(&msg, 0, sizeof(msg));
- msg.cmd = NPE_SETLOOPBACK_MODE;
- msg.eth_id = port->id;
- msg.byte3 = 1;
- if (npe_send_recv_message(port->npe, &msg, "ETH_ENABLE_LOOPBACK"))
- printk(KERN_CRIT "%s: unable to enable loopback\n", dev->name);
-
- i = 0;
- do { /* drain RX buffers */
- while (queue_get_desc(port->plat->rxq, port, 0) >= 0)
- buffs--;
- if (!buffs)
- break;
- if (qmgr_stat_empty(TX_QUEUE(port->id))) {
- /* we have to inject some packet */
- struct desc *desc;
- u32 phys;
- int n = queue_get_desc(port->plat->txreadyq, port, 1);
- BUG_ON(n < 0);
- desc = tx_desc_ptr(port, n);
- phys = tx_desc_phys(port, n);
- desc->buf_len = desc->pkt_len = 1;
- wmb();
- queue_put_desc(TX_QUEUE(port->id), phys, desc);
- }
- udelay(1);
- } while (++i < MAX_CLOSE_WAIT);
-
- if (buffs)
- printk(KERN_CRIT "%s: unable to drain RX queue, %i buffer(s)"
- " left in NPE\n", dev->name, buffs);
-#if DEBUG_CLOSE
- if (!buffs)
- printk(KERN_DEBUG "Draining RX queue took %i cycles\n", i);
-#endif
-
- buffs = TX_DESCS;
- while (queue_get_desc(TX_QUEUE(port->id), port, 1) >= 0)
- buffs--; /* cancel TX */
-
- i = 0;
- do {
- while (queue_get_desc(port->plat->txreadyq, port, 1) >= 0)
- buffs--;
- if (!buffs)
- break;
- } while (++i < MAX_CLOSE_WAIT);
-
- if (buffs)
- printk(KERN_CRIT "%s: unable to drain TX queue, %i buffer(s) "
- "left in NPE\n", dev->name, buffs);
-#if DEBUG_CLOSE
- if (!buffs)
- printk(KERN_DEBUG "Draining TX queues took %i cycles\n", i);
-#endif
-
- msg.byte3 = 0;
- if (npe_send_recv_message(port->npe, &msg, "ETH_DISABLE_LOOPBACK"))
- printk(KERN_CRIT "%s: unable to disable loopback\n",
- dev->name);
-
- phy_stop(port->phydev);
-
- if (!ports_open)
- qmgr_disable_irq(TXDONE_QUEUE);
- destroy_queues(port);
- release_queues(port);
- return 0;
-}
-
-static const struct net_device_ops ixp4xx_netdev_ops = {
- .ndo_open = eth_open,
- .ndo_stop = eth_close,
- .ndo_start_xmit = eth_xmit,
- .ndo_set_multicast_list = eth_set_mcast_list,
- .ndo_do_ioctl = eth_ioctl,
- .ndo_change_mtu = eth_change_mtu,
- .ndo_set_mac_address = eth_mac_addr,
- .ndo_validate_addr = eth_validate_addr,
-};
-
-static int __devinit eth_init_one(struct platform_device *pdev)
-{
- struct port *port;
- struct net_device *dev;
- struct eth_plat_info *plat = pdev->dev.platform_data;
- u32 regs_phys;
- char phy_id[MII_BUS_ID_SIZE + 3];
- int err;
-
- if (ptp_filter_init(ptp_filter, ARRAY_SIZE(ptp_filter))) {
- pr_err("ixp4xx_eth: bad ptp filter\n");
- return -EINVAL;
- }
-
- if (!(dev = alloc_etherdev(sizeof(struct port))))
- return -ENOMEM;
-
- SET_NETDEV_DEV(dev, &pdev->dev);
- port = netdev_priv(dev);
- port->netdev = dev;
- port->id = pdev->id;
-
- switch (port->id) {
- case IXP4XX_ETH_NPEA:
- port->regs = (struct eth_regs __iomem *)IXP4XX_EthA_BASE_VIRT;
- regs_phys = IXP4XX_EthA_BASE_PHYS;
- break;
- case IXP4XX_ETH_NPEB:
- port->regs = (struct eth_regs __iomem *)IXP4XX_EthB_BASE_VIRT;
- regs_phys = IXP4XX_EthB_BASE_PHYS;
- break;
- case IXP4XX_ETH_NPEC:
- port->regs = (struct eth_regs __iomem *)IXP4XX_EthC_BASE_VIRT;
- regs_phys = IXP4XX_EthC_BASE_PHYS;
- break;
- default:
- err = -ENODEV;
- goto err_free;
- }
-
- dev->netdev_ops = &ixp4xx_netdev_ops;
- dev->ethtool_ops = &ixp4xx_ethtool_ops;
- dev->tx_queue_len = 100;
-
- netif_napi_add(dev, &port->napi, eth_poll, NAPI_WEIGHT);
-
- if (!(port->npe = npe_request(NPE_ID(port->id)))) {
- err = -EIO;
- goto err_free;
- }
-
- port->mem_res = request_mem_region(regs_phys, REGS_SIZE, dev->name);
- if (!port->mem_res) {
- err = -EBUSY;
- goto err_npe_rel;
- }
-
- port->plat = plat;
- npe_port_tab[NPE_ID(port->id)] = port;
- memcpy(dev->dev_addr, plat->hwaddr, ETH_ALEN);
-
- platform_set_drvdata(pdev, dev);
-
- __raw_writel(DEFAULT_CORE_CNTRL | CORE_RESET,
- &port->regs->core_control);
- udelay(50);
- __raw_writel(DEFAULT_CORE_CNTRL, &port->regs->core_control);
- udelay(50);
-
- snprintf(phy_id, MII_BUS_ID_SIZE + 3, PHY_ID_FMT, "0", plat->phy);
- port->phydev = phy_connect(dev, phy_id, &ixp4xx_adjust_link, 0,
- PHY_INTERFACE_MODE_MII);
- if (IS_ERR(port->phydev)) {
- err = PTR_ERR(port->phydev);
- goto err_free_mem;
- }
-
- port->phydev->irq = PHY_POLL;
-
- if ((err = register_netdev(dev)))
- goto err_phy_dis;
-
- printk(KERN_INFO "%s: MII PHY %i on %s\n", dev->name, plat->phy,
- npe_name(port->npe));
-
- return 0;
-
-err_phy_dis:
- phy_disconnect(port->phydev);
-err_free_mem:
- npe_port_tab[NPE_ID(port->id)] = NULL;
- platform_set_drvdata(pdev, NULL);
- release_resource(port->mem_res);
-err_npe_rel:
- npe_release(port->npe);
-err_free:
- free_netdev(dev);
- return err;
-}
-
-static int __devexit eth_remove_one(struct platform_device *pdev)
-{
- struct net_device *dev = platform_get_drvdata(pdev);
- struct port *port = netdev_priv(dev);
-
- unregister_netdev(dev);
- phy_disconnect(port->phydev);
- npe_port_tab[NPE_ID(port->id)] = NULL;
- platform_set_drvdata(pdev, NULL);
- npe_release(port->npe);
- release_resource(port->mem_res);
- free_netdev(dev);
- return 0;
-}
-
-static struct platform_driver ixp4xx_eth_driver = {
- .driver.name = DRV_NAME,
- .probe = eth_init_one,
- .remove = eth_remove_one,
-};
-
-static int __init eth_init_module(void)
-{
- int err;
- if ((err = ixp4xx_mdio_register()))
- return err;
- return platform_driver_register(&ixp4xx_eth_driver);
-}
-
-static void __exit eth_cleanup_module(void)
-{
- platform_driver_unregister(&ixp4xx_eth_driver);
- ixp4xx_mdio_remove();
-}
-
-MODULE_AUTHOR("Krzysztof Halasa");
-MODULE_DESCRIPTION("Intel IXP4xx Ethernet driver");
-MODULE_LICENSE("GPL v2");
-MODULE_ALIAS("platform:ixp4xx_eth");
-module_init(eth_init_module);
-module_exit(eth_cleanup_module);
source "drivers/net/ethernet/ibm/Kconfig"
source "drivers/net/ethernet/intel/Kconfig"
source "drivers/net/ethernet/i825xx/Kconfig"
+source "drivers/net/ethernet/xscale/Kconfig"
source "drivers/net/ethernet/mellanox/Kconfig"
source "drivers/net/ethernet/myricom/Kconfig"
source "drivers/net/ethernet/natsemi/Kconfig"
obj-$(CONFIG_NET_VENDOR_IBM) += ibm/
obj-$(CONFIG_NET_VENDOR_INTEL) += intel/
obj-$(CONFIG_NET_VENDOR_I825XX) += i825xx/
+obj-$(CONFIG_NET_VENDOR_XSCALE) += xscale/
obj-$(CONFIG_NET_VENDOR_MELLANOX) += mellanox/
obj-$(CONFIG_NET_VENDOR_MYRI) += myricom/
obj-$(CONFIG_NET_VENDOR_NATSEMI) += natsemi/
--- /dev/null
+#
+# Intel XScale IXP device configuration
+#
+
+config NET_VENDOR_XSCALE
+ bool "Intel XScale IXP devices"
+ depends on NET_VENDOR_INTEL && ((ARM && ARCH_IXP4XX && \
+ IXP4XX_NPE && IXP4XX_QMGR) || ARCH_ENP2611)
+ ---help---
+ If you have a network (Ethernet) card belonging to this class, say Y
+ and read the Ethernet-HOWTO, available from
+ <http://www.tldp.org/docs.html#howto>.
+
+ Note that the answer to this question does not directly affect the
+ kernel: saying N will just cause the configurator to skip all
+ the questions about XSacle IXP devices. If you say Y, you will be
+ asked for your specific card in the following questions.
+
+if NET_VENDOR_XSCALE
+
+config IXP4XX_ETH
+ tristate "Intel IXP4xx Ethernet support"
+ depends on ARM && ARCH_IXP4XX && IXP4XX_NPE && IXP4XX_QMGR
+ select PHYLIB
+ ---help---
+ Say Y here if you want to use built-in Ethernet ports
+ on IXP4xx processor.
+
+source "drivers/net/ethernet/xscale/ixp2000/Kconfig"
+
+endif # NET_VENDOR_XSCALE
--- /dev/null
+#
+# Makefile for the Intel XScale IXP device drivers.
+#
+
+obj-$(CONFIG_ENP2611_MSF_NET) += ixp2000/
+obj-$(CONFIG_IXP4XX_ETH) += ixp4xx_eth.o
--- /dev/null
+config ENP2611_MSF_NET
+ tristate "Radisys ENP2611 MSF network interface support"
+ depends on ARCH_ENP2611
+ ---help---
+ This is a driver for the MSF network interface unit in
+ the IXP2400 on the Radisys ENP2611 platform.
--- /dev/null
+obj-$(CONFIG_ENP2611_MSF_NET) += enp2611_mod.o
+
+enp2611_mod-objs := caleb.o enp2611.o ixp2400-msf.o ixpdev.o pm3386.o
--- /dev/null
+/*
+ * 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);
+}
--- /dev/null
+/*
+ * 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
--- /dev/null
+/*
+ * 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/module.h>
+#include <linux/kernel.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/init.h>
+#include <linux/moduleparam.h>
+#include <asm/hardware/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
+ }
+};
+
+static struct net_device *nds[3];
+static struct timer_list link_check_timer;
+
+/* @@@ 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];
+ if (dev == NULL)
+ continue;
+
+ 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 ports;
+ int i;
+
+ if (!machine_is_enp2611())
+ return -ENODEV;
+
+ caleb_reset();
+ pm3386_reset();
+
+ ports = pm3386_port_count();
+ for (i = 0; i < ports; i++) {
+ nds[i] = ixpdev_alloc(i, sizeof(struct ixpdev_priv));
+ if (nds[i] == NULL) {
+ while (--i >= 0)
+ free_netdev(nds[i]);
+ return -ENOMEM;
+ }
+
+ pm3386_init_port(i);
+ pm3386_get_mac(i, nds[i]->dev_addr);
+ }
+
+ ixp2400_msf_init(&enp2611_msf_parameters);
+
+ if (ixpdev_init(ports, nds, enp2611_set_port_admin_status)) {
+ for (i = 0; i < ports; i++)
+ if (nds[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");
--- /dev/null
+/*
+ * 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/kernel.h>
+#include <linux/init.h>
+#include <mach/hardware.h>
+#include <mach/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);
+}
--- /dev/null
+/*
+ * 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
--- /dev/null
+/*
+ * 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
+
+
--- /dev/null
+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,
+ }
+};
--- /dev/null
+/*
+ * 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
+
+
--- /dev/null
+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,
+ }
+};
--- /dev/null
+/*
+ * 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/module.h>
+#include <linux/kernel.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/moduleparam.h>
+#include <linux/gfp.h>
+#include <asm/hardware/uengine.h>
+#include <asm/io.h>
+#include "ixp2400_rx.ucode"
+#include "ixp2400_tx.ucode"
+#include "ixpdev_priv.h"
+#include "ixpdev.h"
+#include "pm3386.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;
+ unsigned long flags;
+
+ if (unlikely(skb->len > PAGE_SIZE)) {
+ /* @@@ Count drops. */
+ dev_kfree_skb(skb);
+ return NETDEV_TX_OK;
+ }
+
+ 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)));
+
+ local_irq_save(flags);
+ ip->tx_queue_entries++;
+ if (ip->tx_queue_entries == TX_BUF_COUNT_PER_CHAN)
+ netif_stop_queue(dev);
+ local_irq_restore(flags);
+
+ return NETDEV_TX_OK;
+}
+
+
+static int ixpdev_rx(struct net_device *dev, int processed, int budget)
+{
+ while (processed < budget) {
+ 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 = netdev_alloc_skb_ip_align(dev, desc->pkt_length);
+ if (likely(skb != NULL)) {
+ skb_copy_to_linear_data(skb, buf, desc->pkt_length);
+ skb_put(skb, desc->pkt_length);
+ skb->protocol = eth_type_trans(skb, nds[desc->channel]);
+
+ netif_receive_skb(skb);
+ }
+
+err:
+ ixp2000_reg_write(RING_RX_PENDING, _desc);
+ processed++;
+ }
+
+ return processed;
+}
+
+/* dev always points to nds[0]. */
+static int ixpdev_poll(struct napi_struct *napi, int budget)
+{
+ struct ixpdev_priv *ip = container_of(napi, struct ixpdev_priv, napi);
+ struct net_device *dev = ip->dev;
+ int rx;
+
+ rx = 0;
+ do {
+ ixp2000_reg_write(IXP2000_IRQ_THD_RAW_STATUS_A_0, 0x00ff);
+
+ rx = ixpdev_rx(dev, rx, budget);
+ if (rx >= budget)
+ break;
+ } while (ixp2000_reg_read(IXP2000_IRQ_THD_RAW_STATUS_A_0) & 0x00ff);
+
+ napi_complete(napi);
+ ixp2000_reg_write(IXP2000_IRQ_THD_ENABLE_SET_A_0, 0x00ff);
+
+ return rx;
+}
+
+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)
+{
+ 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) {
+ struct net_device *dev = nds[0];
+ struct ixpdev_priv *ip = netdev_priv(dev);
+
+ ixp2000_reg_wrb(IXP2000_IRQ_THD_ENABLE_CLEAR_A_0, 0x00ff);
+ if (likely(napi_schedule_prep(&ip->napi))) {
+ __napi_schedule(&ip->napi);
+ } 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);
+ enable_irq(IRQ_IXP2000_THDA0);
+}
+#endif
+
+static int ixpdev_open(struct net_device *dev)
+{
+ struct ixpdev_priv *ip = netdev_priv(dev);
+ int err;
+
+ napi_enable(&ip->napi);
+ if (!nds_open++) {
+ err = request_irq(IRQ_IXP2000_THDA0, ixpdev_interrupt,
+ IRQF_SHARED, "ixp2000_eth", nds);
+ if (err) {
+ nds_open--;
+ napi_disable(&ip->napi);
+ 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);
+ napi_disable(&ip->napi);
+ 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;
+}
+
+static struct net_device_stats *ixpdev_get_stats(struct net_device *dev)
+{
+ struct ixpdev_priv *ip = netdev_priv(dev);
+
+ pm3386_get_stats(ip->channel, &(dev->stats));
+
+ return &(dev->stats);
+}
+
+static const struct net_device_ops ixpdev_netdev_ops = {
+ .ndo_open = ixpdev_open,
+ .ndo_stop = ixpdev_close,
+ .ndo_start_xmit = ixpdev_xmit,
+ .ndo_change_mtu = eth_change_mtu,
+ .ndo_validate_addr = eth_validate_addr,
+ .ndo_set_mac_address = eth_mac_addr,
+ .ndo_get_stats = ixpdev_get_stats,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+ .ndo_poll_controller = ixpdev_poll_controller,
+#endif
+};
+
+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->netdev_ops = &ixpdev_netdev_ops;
+
+ dev->features |= NETIF_F_SG | NETIF_F_HW_CSUM;
+
+ ip = netdev_priv(dev);
+ ip->dev = dev;
+ netif_napi_add(dev, &ip->napi, ixpdev_poll, 64);
+ 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;
+
+ BUILD_BUG_ON(RX_BUF_COUNT > 192 || TX_BUF_COUNT > 192);
+
+ 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));
+}
--- /dev/null
+/*
+ * 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
+{
+ struct net_device *dev;
+ struct napi_struct napi;
+ 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
--- /dev/null
+/*
+ * 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
--- /dev/null
+/*
+ * 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/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);
+}
+
+int pm3386_secondary_present(void)
+{
+ return pm3386_reg_read(1, 0) == 0x3386;
+}
+
+void pm3386_reset(void)
+{
+ u8 mac[3][6];
+ int secondary;
+
+ secondary = pm3386_secondary_present();
+
+ /* Save programmed MAC addresses. */
+ pm3386_get_mac(0, mac[0]);
+ pm3386_get_mac(1, mac[1]);
+ if (secondary)
+ pm3386_get_mac(2, mac[2]);
+
+ /* Assert analog and digital reset. */
+ pm3386_reg_write(0, 0x002, 0x0060);
+ if (secondary)
+ pm3386_reg_write(1, 0x002, 0x0060);
+ mdelay(1);
+
+ /* Deassert analog reset. */
+ pm3386_reg_write(0, 0x002, 0x0062);
+ if (secondary)
+ pm3386_reg_write(1, 0x002, 0x0062);
+ mdelay(10);
+
+ /* Deassert digital reset. */
+ pm3386_reg_write(0, 0x002, 0x0063);
+ if (secondary)
+ pm3386_reg_write(1, 0x002, 0x0063);
+ mdelay(10);
+
+ /* Restore programmed MAC addresses. */
+ pm3386_set_mac(0, mac[0]);
+ pm3386_set_mac(1, mac[1]);
+ if (secondary)
+ pm3386_set_mac(2, mac[2]);
+
+ /* Disable carrier on all ports. */
+ pm3386_set_carrier(0, 0);
+ pm3386_set_carrier(1, 0);
+ if (secondary)
+ pm3386_set_carrier(2, 0);
+}
+
+static u16 swaph(u16 x)
+{
+ return ((x << 8) | (x >> 8)) & 0xffff;
+}
+
+int pm3386_port_count(void)
+{
+ return 2 + pm3386_secondary_present();
+}
+
+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");
--- /dev/null
+/*
+ * 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);
+int pm3386_port_count(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
--- /dev/null
+/*
+ * Intel IXP4xx Ethernet driver for Linux
+ *
+ * Copyright (C) 2007 Krzysztof Halasa <khc@pm.waw.pl>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of version 2 of the GNU General Public License
+ * as published by the Free Software Foundation.
+ *
+ * Ethernet port config (0x00 is not present on IXP42X):
+ *
+ * logical port 0x00 0x10 0x20
+ * NPE 0 (NPE-A) 1 (NPE-B) 2 (NPE-C)
+ * physical PortId 2 0 1
+ * TX queue 23 24 25
+ * RX-free queue 26 27 28
+ * TX-done queue is always 31, per-port RX and TX-ready queues are configurable
+ *
+ *
+ * Queue entries:
+ * bits 0 -> 1 - NPE ID (RX and TX-done)
+ * bits 0 -> 2 - priority (TX, per 802.1D)
+ * bits 3 -> 4 - port ID (user-set?)
+ * bits 5 -> 31 - physical descriptor address
+ */
+
+#include <linux/delay.h>
+#include <linux/dma-mapping.h>
+#include <linux/dmapool.h>
+#include <linux/etherdevice.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/net_tstamp.h>
+#include <linux/phy.h>
+#include <linux/platform_device.h>
+#include <linux/ptp_classify.h>
+#include <linux/slab.h>
+#include <mach/ixp46x_ts.h>
+#include <mach/npe.h>
+#include <mach/qmgr.h>
+
+#define DEBUG_DESC 0
+#define DEBUG_RX 0
+#define DEBUG_TX 0
+#define DEBUG_PKT_BYTES 0
+#define DEBUG_MDIO 0
+#define DEBUG_CLOSE 0
+
+#define DRV_NAME "ixp4xx_eth"
+
+#define MAX_NPES 3
+
+#define RX_DESCS 64 /* also length of all RX queues */
+#define TX_DESCS 16 /* also length of all TX queues */
+#define TXDONE_QUEUE_LEN 64 /* dwords */
+
+#define POOL_ALLOC_SIZE (sizeof(struct desc) * (RX_DESCS + TX_DESCS))
+#define REGS_SIZE 0x1000
+#define MAX_MRU 1536 /* 0x600 */
+#define RX_BUFF_SIZE ALIGN((NET_IP_ALIGN) + MAX_MRU, 4)
+
+#define NAPI_WEIGHT 16
+#define MDIO_INTERVAL (3 * HZ)
+#define MAX_MDIO_RETRIES 100 /* microseconds, typically 30 cycles */
+#define MAX_CLOSE_WAIT 1000 /* microseconds, typically 2-3 cycles */
+
+#define NPE_ID(port_id) ((port_id) >> 4)
+#define PHYSICAL_ID(port_id) ((NPE_ID(port_id) + 2) % 3)
+#define TX_QUEUE(port_id) (NPE_ID(port_id) + 23)
+#define RXFREE_QUEUE(port_id) (NPE_ID(port_id) + 26)
+#define TXDONE_QUEUE 31
+
+#define PTP_SLAVE_MODE 1
+#define PTP_MASTER_MODE 2
+#define PORT2CHANNEL(p) NPE_ID(p->id)
+
+/* TX Control Registers */
+#define TX_CNTRL0_TX_EN 0x01
+#define TX_CNTRL0_HALFDUPLEX 0x02
+#define TX_CNTRL0_RETRY 0x04
+#define TX_CNTRL0_PAD_EN 0x08
+#define TX_CNTRL0_APPEND_FCS 0x10
+#define TX_CNTRL0_2DEFER 0x20
+#define TX_CNTRL0_RMII 0x40 /* reduced MII */
+#define TX_CNTRL1_RETRIES 0x0F /* 4 bits */
+
+/* RX Control Registers */
+#define RX_CNTRL0_RX_EN 0x01
+#define RX_CNTRL0_PADSTRIP_EN 0x02
+#define RX_CNTRL0_SEND_FCS 0x04
+#define RX_CNTRL0_PAUSE_EN 0x08
+#define RX_CNTRL0_LOOP_EN 0x10
+#define RX_CNTRL0_ADDR_FLTR_EN 0x20
+#define RX_CNTRL0_RX_RUNT_EN 0x40
+#define RX_CNTRL0_BCAST_DIS 0x80
+#define RX_CNTRL1_DEFER_EN 0x01
+
+/* Core Control Register */
+#define CORE_RESET 0x01
+#define CORE_RX_FIFO_FLUSH 0x02
+#define CORE_TX_FIFO_FLUSH 0x04
+#define CORE_SEND_JAM 0x08
+#define CORE_MDC_EN 0x10 /* MDIO using NPE-B ETH-0 only */
+
+#define DEFAULT_TX_CNTRL0 (TX_CNTRL0_TX_EN | TX_CNTRL0_RETRY | \
+ TX_CNTRL0_PAD_EN | TX_CNTRL0_APPEND_FCS | \
+ TX_CNTRL0_2DEFER)
+#define DEFAULT_RX_CNTRL0 RX_CNTRL0_RX_EN
+#define DEFAULT_CORE_CNTRL CORE_MDC_EN
+
+
+/* NPE message codes */
+#define NPE_GETSTATUS 0x00
+#define NPE_EDB_SETPORTADDRESS 0x01
+#define NPE_EDB_GETMACADDRESSDATABASE 0x02
+#define NPE_EDB_SETMACADDRESSSDATABASE 0x03
+#define NPE_GETSTATS 0x04
+#define NPE_RESETSTATS 0x05
+#define NPE_SETMAXFRAMELENGTHS 0x06
+#define NPE_VLAN_SETRXTAGMODE 0x07
+#define NPE_VLAN_SETDEFAULTRXVID 0x08
+#define NPE_VLAN_SETPORTVLANTABLEENTRY 0x09
+#define NPE_VLAN_SETPORTVLANTABLERANGE 0x0A
+#define NPE_VLAN_SETRXQOSENTRY 0x0B
+#define NPE_VLAN_SETPORTIDEXTRACTIONMODE 0x0C
+#define NPE_STP_SETBLOCKINGSTATE 0x0D
+#define NPE_FW_SETFIREWALLMODE 0x0E
+#define NPE_PC_SETFRAMECONTROLDURATIONID 0x0F
+#define NPE_PC_SETAPMACTABLE 0x11
+#define NPE_SETLOOPBACK_MODE 0x12
+#define NPE_PC_SETBSSIDTABLE 0x13
+#define NPE_ADDRESS_FILTER_CONFIG 0x14
+#define NPE_APPENDFCSCONFIG 0x15
+#define NPE_NOTIFY_MAC_RECOVERY_DONE 0x16
+#define NPE_MAC_RECOVERY_START 0x17
+
+
+#ifdef __ARMEB__
+typedef struct sk_buff buffer_t;
+#define free_buffer dev_kfree_skb
+#define free_buffer_irq dev_kfree_skb_irq
+#else
+typedef void buffer_t;
+#define free_buffer kfree
+#define free_buffer_irq kfree
+#endif
+
+struct eth_regs {
+ u32 tx_control[2], __res1[2]; /* 000 */
+ u32 rx_control[2], __res2[2]; /* 010 */
+ u32 random_seed, __res3[3]; /* 020 */
+ u32 partial_empty_threshold, __res4; /* 030 */
+ u32 partial_full_threshold, __res5; /* 038 */
+ u32 tx_start_bytes, __res6[3]; /* 040 */
+ u32 tx_deferral, rx_deferral, __res7[2];/* 050 */
+ u32 tx_2part_deferral[2], __res8[2]; /* 060 */
+ u32 slot_time, __res9[3]; /* 070 */
+ u32 mdio_command[4]; /* 080 */
+ u32 mdio_status[4]; /* 090 */
+ u32 mcast_mask[6], __res10[2]; /* 0A0 */
+ u32 mcast_addr[6], __res11[2]; /* 0C0 */
+ u32 int_clock_threshold, __res12[3]; /* 0E0 */
+ u32 hw_addr[6], __res13[61]; /* 0F0 */
+ u32 core_control; /* 1FC */
+};
+
+struct port {
+ struct resource *mem_res;
+ struct eth_regs __iomem *regs;
+ struct npe *npe;
+ struct net_device *netdev;
+ struct napi_struct napi;
+ struct phy_device *phydev;
+ struct eth_plat_info *plat;
+ buffer_t *rx_buff_tab[RX_DESCS], *tx_buff_tab[TX_DESCS];
+ struct desc *desc_tab; /* coherent */
+ u32 desc_tab_phys;
+ int id; /* logical port ID */
+ int speed, duplex;
+ u8 firmware[4];
+ int hwts_tx_en;
+ int hwts_rx_en;
+};
+
+/* NPE message structure */
+struct msg {
+#ifdef __ARMEB__
+ u8 cmd, eth_id, byte2, byte3;
+ u8 byte4, byte5, byte6, byte7;
+#else
+ u8 byte3, byte2, eth_id, cmd;
+ u8 byte7, byte6, byte5, byte4;
+#endif
+};
+
+/* Ethernet packet descriptor */
+struct desc {
+ u32 next; /* pointer to next buffer, unused */
+
+#ifdef __ARMEB__
+ u16 buf_len; /* buffer length */
+ u16 pkt_len; /* packet length */
+ u32 data; /* pointer to data buffer in RAM */
+ u8 dest_id;
+ u8 src_id;
+ u16 flags;
+ u8 qos;
+ u8 padlen;
+ u16 vlan_tci;
+#else
+ u16 pkt_len; /* packet length */
+ u16 buf_len; /* buffer length */
+ u32 data; /* pointer to data buffer in RAM */
+ u16 flags;
+ u8 src_id;
+ u8 dest_id;
+ u16 vlan_tci;
+ u8 padlen;
+ u8 qos;
+#endif
+
+#ifdef __ARMEB__
+ u8 dst_mac_0, dst_mac_1, dst_mac_2, dst_mac_3;
+ u8 dst_mac_4, dst_mac_5, src_mac_0, src_mac_1;
+ u8 src_mac_2, src_mac_3, src_mac_4, src_mac_5;
+#else
+ u8 dst_mac_3, dst_mac_2, dst_mac_1, dst_mac_0;
+ u8 src_mac_1, src_mac_0, dst_mac_5, dst_mac_4;
+ u8 src_mac_5, src_mac_4, src_mac_3, src_mac_2;
+#endif
+};
+
+
+#define rx_desc_phys(port, n) ((port)->desc_tab_phys + \
+ (n) * sizeof(struct desc))
+#define rx_desc_ptr(port, n) (&(port)->desc_tab[n])
+
+#define tx_desc_phys(port, n) ((port)->desc_tab_phys + \
+ ((n) + RX_DESCS) * sizeof(struct desc))
+#define tx_desc_ptr(port, n) (&(port)->desc_tab[(n) + RX_DESCS])
+
+#ifndef __ARMEB__
+static inline void memcpy_swab32(u32 *dest, u32 *src, int cnt)
+{
+ int i;
+ for (i = 0; i < cnt; i++)
+ dest[i] = swab32(src[i]);
+}
+#endif
+
+static spinlock_t mdio_lock;
+static struct eth_regs __iomem *mdio_regs; /* mdio command and status only */
+static struct mii_bus *mdio_bus;
+static int ports_open;
+static struct port *npe_port_tab[MAX_NPES];
+static struct dma_pool *dma_pool;
+
+static struct sock_filter ptp_filter[] = {
+ PTP_FILTER
+};
+
+static int ixp_ptp_match(struct sk_buff *skb, u16 uid_hi, u32 uid_lo, u16 seqid)
+{
+ u8 *data = skb->data;
+ unsigned int offset;
+ u16 *hi, *id;
+ u32 lo;
+
+ if (sk_run_filter(skb, ptp_filter) != PTP_CLASS_V1_IPV4)
+ return 0;
+
+ offset = ETH_HLEN + IPV4_HLEN(data) + UDP_HLEN;
+
+ if (skb->len < offset + OFF_PTP_SEQUENCE_ID + sizeof(seqid))
+ return 0;
+
+ hi = (u16 *)(data + offset + OFF_PTP_SOURCE_UUID);
+ id = (u16 *)(data + offset + OFF_PTP_SEQUENCE_ID);
+
+ memcpy(&lo, &hi[1], sizeof(lo));
+
+ return (uid_hi == ntohs(*hi) &&
+ uid_lo == ntohl(lo) &&
+ seqid == ntohs(*id));
+}
+
+static void ixp_rx_timestamp(struct port *port, struct sk_buff *skb)
+{
+ struct skb_shared_hwtstamps *shhwtstamps;
+ struct ixp46x_ts_regs *regs;
+ u64 ns;
+ u32 ch, hi, lo, val;
+ u16 uid, seq;
+
+ if (!port->hwts_rx_en)
+ return;
+
+ ch = PORT2CHANNEL(port);
+
+ regs = (struct ixp46x_ts_regs __iomem *) IXP4XX_TIMESYNC_BASE_VIRT;
+
+ val = __raw_readl(®s->channel[ch].ch_event);
+
+ if (!(val & RX_SNAPSHOT_LOCKED))
+ return;
+
+ lo = __raw_readl(®s->channel[ch].src_uuid_lo);
+ hi = __raw_readl(®s->channel[ch].src_uuid_hi);
+
+ uid = hi & 0xffff;
+ seq = (hi >> 16) & 0xffff;
+
+ if (!ixp_ptp_match(skb, htons(uid), htonl(lo), htons(seq)))
+ goto out;
+
+ lo = __raw_readl(®s->channel[ch].rx_snap_lo);
+ hi = __raw_readl(®s->channel[ch].rx_snap_hi);
+ ns = ((u64) hi) << 32;
+ ns |= lo;
+ ns <<= TICKS_NS_SHIFT;
+
+ shhwtstamps = skb_hwtstamps(skb);
+ memset(shhwtstamps, 0, sizeof(*shhwtstamps));
+ shhwtstamps->hwtstamp = ns_to_ktime(ns);
+out:
+ __raw_writel(RX_SNAPSHOT_LOCKED, ®s->channel[ch].ch_event);
+}
+
+static void ixp_tx_timestamp(struct port *port, struct sk_buff *skb)
+{
+ struct skb_shared_hwtstamps shhwtstamps;
+ struct ixp46x_ts_regs *regs;
+ struct skb_shared_info *shtx;
+ u64 ns;
+ u32 ch, cnt, hi, lo, val;
+
+ shtx = skb_shinfo(skb);
+ if (unlikely(shtx->tx_flags & SKBTX_HW_TSTAMP && port->hwts_tx_en))
+ shtx->tx_flags |= SKBTX_IN_PROGRESS;
+ else
+ return;
+
+ ch = PORT2CHANNEL(port);
+
+ regs = (struct ixp46x_ts_regs __iomem *) IXP4XX_TIMESYNC_BASE_VIRT;
+
+ /*
+ * This really stinks, but we have to poll for the Tx time stamp.
+ * Usually, the time stamp is ready after 4 to 6 microseconds.
+ */
+ for (cnt = 0; cnt < 100; cnt++) {
+ val = __raw_readl(®s->channel[ch].ch_event);
+ if (val & TX_SNAPSHOT_LOCKED)
+ break;
+ udelay(1);
+ }
+ if (!(val & TX_SNAPSHOT_LOCKED)) {
+ shtx->tx_flags &= ~SKBTX_IN_PROGRESS;
+ return;
+ }
+
+ lo = __raw_readl(®s->channel[ch].tx_snap_lo);
+ hi = __raw_readl(®s->channel[ch].tx_snap_hi);
+ ns = ((u64) hi) << 32;
+ ns |= lo;
+ ns <<= TICKS_NS_SHIFT;
+
+ memset(&shhwtstamps, 0, sizeof(shhwtstamps));
+ shhwtstamps.hwtstamp = ns_to_ktime(ns);
+ skb_tstamp_tx(skb, &shhwtstamps);
+
+ __raw_writel(TX_SNAPSHOT_LOCKED, ®s->channel[ch].ch_event);
+}
+
+static int hwtstamp_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
+{
+ struct hwtstamp_config cfg;
+ struct ixp46x_ts_regs *regs;
+ struct port *port = netdev_priv(netdev);
+ int ch;
+
+ if (copy_from_user(&cfg, ifr->ifr_data, sizeof(cfg)))
+ return -EFAULT;
+
+ if (cfg.flags) /* reserved for future extensions */
+ return -EINVAL;
+
+ ch = PORT2CHANNEL(port);
+ regs = (struct ixp46x_ts_regs __iomem *) IXP4XX_TIMESYNC_BASE_VIRT;
+
+ switch (cfg.tx_type) {
+ case HWTSTAMP_TX_OFF:
+ port->hwts_tx_en = 0;
+ break;
+ case HWTSTAMP_TX_ON:
+ port->hwts_tx_en = 1;
+ break;
+ default:
+ return -ERANGE;
+ }
+
+ switch (cfg.rx_filter) {
+ case HWTSTAMP_FILTER_NONE:
+ port->hwts_rx_en = 0;
+ break;
+ case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
+ port->hwts_rx_en = PTP_SLAVE_MODE;
+ __raw_writel(0, ®s->channel[ch].ch_control);
+ break;
+ case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
+ port->hwts_rx_en = PTP_MASTER_MODE;
+ __raw_writel(MASTER_MODE, ®s->channel[ch].ch_control);
+ break;
+ default:
+ return -ERANGE;
+ }
+
+ /* Clear out any old time stamps. */
+ __raw_writel(TX_SNAPSHOT_LOCKED | RX_SNAPSHOT_LOCKED,
+ ®s->channel[ch].ch_event);
+
+ return copy_to_user(ifr->ifr_data, &cfg, sizeof(cfg)) ? -EFAULT : 0;
+}
+
+static int ixp4xx_mdio_cmd(struct mii_bus *bus, int phy_id, int location,
+ int write, u16 cmd)
+{
+ int cycles = 0;
+
+ if (__raw_readl(&mdio_regs->mdio_command[3]) & 0x80) {
+ printk(KERN_ERR "%s: MII not ready to transmit\n", bus->name);
+ return -1;
+ }
+
+ if (write) {
+ __raw_writel(cmd & 0xFF, &mdio_regs->mdio_command[0]);
+ __raw_writel(cmd >> 8, &mdio_regs->mdio_command[1]);
+ }
+ __raw_writel(((phy_id << 5) | location) & 0xFF,
+ &mdio_regs->mdio_command[2]);
+ __raw_writel((phy_id >> 3) | (write << 2) | 0x80 /* GO */,
+ &mdio_regs->mdio_command[3]);
+
+ while ((cycles < MAX_MDIO_RETRIES) &&
+ (__raw_readl(&mdio_regs->mdio_command[3]) & 0x80)) {
+ udelay(1);
+ cycles++;
+ }
+
+ if (cycles == MAX_MDIO_RETRIES) {
+ printk(KERN_ERR "%s #%i: MII write failed\n", bus->name,
+ phy_id);
+ return -1;
+ }
+
+#if DEBUG_MDIO
+ printk(KERN_DEBUG "%s #%i: mdio_%s() took %i cycles\n", bus->name,
+ phy_id, write ? "write" : "read", cycles);
+#endif
+
+ if (write)
+ return 0;
+
+ if (__raw_readl(&mdio_regs->mdio_status[3]) & 0x80) {
+#if DEBUG_MDIO
+ printk(KERN_DEBUG "%s #%i: MII read failed\n", bus->name,
+ phy_id);
+#endif
+ return 0xFFFF; /* don't return error */
+ }
+
+ return (__raw_readl(&mdio_regs->mdio_status[0]) & 0xFF) |
+ ((__raw_readl(&mdio_regs->mdio_status[1]) & 0xFF) << 8);
+}
+
+static int ixp4xx_mdio_read(struct mii_bus *bus, int phy_id, int location)
+{
+ unsigned long flags;
+ int ret;
+
+ spin_lock_irqsave(&mdio_lock, flags);
+ ret = ixp4xx_mdio_cmd(bus, phy_id, location, 0, 0);
+ spin_unlock_irqrestore(&mdio_lock, flags);
+#if DEBUG_MDIO
+ printk(KERN_DEBUG "%s #%i: MII read [%i] -> 0x%X\n", bus->name,
+ phy_id, location, ret);
+#endif
+ return ret;
+}
+
+static int ixp4xx_mdio_write(struct mii_bus *bus, int phy_id, int location,
+ u16 val)
+{
+ unsigned long flags;
+ int ret;
+
+ spin_lock_irqsave(&mdio_lock, flags);
+ ret = ixp4xx_mdio_cmd(bus, phy_id, location, 1, val);
+ spin_unlock_irqrestore(&mdio_lock, flags);
+#if DEBUG_MDIO
+ printk(KERN_DEBUG "%s #%i: MII write [%i] <- 0x%X, err = %i\n",
+ bus->name, phy_id, location, val, ret);
+#endif
+ return ret;
+}
+
+static int ixp4xx_mdio_register(void)
+{
+ int err;
+
+ if (!(mdio_bus = mdiobus_alloc()))
+ return -ENOMEM;
+
+ if (cpu_is_ixp43x()) {
+ /* IXP43x lacks NPE-B and uses NPE-C for MII PHY access */
+ if (!(ixp4xx_read_feature_bits() & IXP4XX_FEATURE_NPEC_ETH))
+ return -ENODEV;
+ mdio_regs = (struct eth_regs __iomem *)IXP4XX_EthC_BASE_VIRT;
+ } else {
+ /* All MII PHY accesses use NPE-B Ethernet registers */
+ if (!(ixp4xx_read_feature_bits() & IXP4XX_FEATURE_NPEB_ETH0))
+ return -ENODEV;
+ mdio_regs = (struct eth_regs __iomem *)IXP4XX_EthB_BASE_VIRT;
+ }
+
+ __raw_writel(DEFAULT_CORE_CNTRL, &mdio_regs->core_control);
+ spin_lock_init(&mdio_lock);
+ mdio_bus->name = "IXP4xx MII Bus";
+ mdio_bus->read = &ixp4xx_mdio_read;
+ mdio_bus->write = &ixp4xx_mdio_write;
+ strcpy(mdio_bus->id, "0");
+
+ if ((err = mdiobus_register(mdio_bus)))
+ mdiobus_free(mdio_bus);
+ return err;
+}
+
+static void ixp4xx_mdio_remove(void)
+{
+ mdiobus_unregister(mdio_bus);
+ mdiobus_free(mdio_bus);
+}
+
+
+static void ixp4xx_adjust_link(struct net_device *dev)
+{
+ struct port *port = netdev_priv(dev);
+ struct phy_device *phydev = port->phydev;
+
+ if (!phydev->link) {
+ if (port->speed) {
+ port->speed = 0;
+ printk(KERN_INFO "%s: link down\n", dev->name);
+ }
+ return;
+ }
+
+ if (port->speed == phydev->speed && port->duplex == phydev->duplex)
+ return;
+
+ port->speed = phydev->speed;
+ port->duplex = phydev->duplex;
+
+ if (port->duplex)
+ __raw_writel(DEFAULT_TX_CNTRL0 & ~TX_CNTRL0_HALFDUPLEX,
+ &port->regs->tx_control[0]);
+ else
+ __raw_writel(DEFAULT_TX_CNTRL0 | TX_CNTRL0_HALFDUPLEX,
+ &port->regs->tx_control[0]);
+
+ printk(KERN_INFO "%s: link up, speed %u Mb/s, %s duplex\n",
+ dev->name, port->speed, port->duplex ? "full" : "half");
+}
+
+
+static inline void debug_pkt(struct net_device *dev, const char *func,
+ u8 *data, int len)
+{
+#if DEBUG_PKT_BYTES
+ int i;
+
+ printk(KERN_DEBUG "%s: %s(%i) ", dev->name, func, len);
+ for (i = 0; i < len; i++) {
+ if (i >= DEBUG_PKT_BYTES)
+ break;
+ printk("%s%02X",
+ ((i == 6) || (i == 12) || (i >= 14)) ? " " : "",
+ data[i]);
+ }
+ printk("\n");
+#endif
+}
+
+
+static inline void debug_desc(u32 phys, struct desc *desc)
+{
+#if DEBUG_DESC
+ printk(KERN_DEBUG "%X: %X %3X %3X %08X %2X < %2X %4X %X"
+ " %X %X %02X%02X%02X%02X%02X%02X < %02X%02X%02X%02X%02X%02X\n",
+ phys, desc->next, desc->buf_len, desc->pkt_len,
+ desc->data, desc->dest_id, desc->src_id, desc->flags,
+ desc->qos, desc->padlen, desc->vlan_tci,
+ desc->dst_mac_0, desc->dst_mac_1, desc->dst_mac_2,
+ desc->dst_mac_3, desc->dst_mac_4, desc->dst_mac_5,
+ desc->src_mac_0, desc->src_mac_1, desc->src_mac_2,
+ desc->src_mac_3, desc->src_mac_4, desc->src_mac_5);
+#endif
+}
+
+static inline int queue_get_desc(unsigned int queue, struct port *port,
+ int is_tx)
+{
+ u32 phys, tab_phys, n_desc;
+ struct desc *tab;
+
+ if (!(phys = qmgr_get_entry(queue)))
+ return -1;
+
+ phys &= ~0x1F; /* mask out non-address bits */
+ tab_phys = is_tx ? tx_desc_phys(port, 0) : rx_desc_phys(port, 0);
+ tab = is_tx ? tx_desc_ptr(port, 0) : rx_desc_ptr(port, 0);
+ n_desc = (phys - tab_phys) / sizeof(struct desc);
+ BUG_ON(n_desc >= (is_tx ? TX_DESCS : RX_DESCS));
+ debug_desc(phys, &tab[n_desc]);
+ BUG_ON(tab[n_desc].next);
+ return n_desc;
+}
+
+static inline void queue_put_desc(unsigned int queue, u32 phys,
+ struct desc *desc)
+{
+ debug_desc(phys, desc);
+ BUG_ON(phys & 0x1F);
+ qmgr_put_entry(queue, phys);
+ /* Don't check for queue overflow here, we've allocated sufficient
+ length and queues >= 32 don't support this check anyway. */
+}
+
+
+static inline void dma_unmap_tx(struct port *port, struct desc *desc)
+{
+#ifdef __ARMEB__
+ dma_unmap_single(&port->netdev->dev, desc->data,
+ desc->buf_len, DMA_TO_DEVICE);
+#else
+ dma_unmap_single(&port->netdev->dev, desc->data & ~3,
+ ALIGN((desc->data & 3) + desc->buf_len, 4),
+ DMA_TO_DEVICE);
+#endif
+}
+
+
+static void eth_rx_irq(void *pdev)
+{
+ struct net_device *dev = pdev;
+ struct port *port = netdev_priv(dev);
+
+#if DEBUG_RX
+ printk(KERN_DEBUG "%s: eth_rx_irq\n", dev->name);
+#endif
+ qmgr_disable_irq(port->plat->rxq);
+ napi_schedule(&port->napi);
+}
+
+static int eth_poll(struct napi_struct *napi, int budget)
+{
+ struct port *port = container_of(napi, struct port, napi);
+ struct net_device *dev = port->netdev;
+ unsigned int rxq = port->plat->rxq, rxfreeq = RXFREE_QUEUE(port->id);
+ int received = 0;
+
+#if DEBUG_RX
+ printk(KERN_DEBUG "%s: eth_poll\n", dev->name);
+#endif
+
+ while (received < budget) {
+ struct sk_buff *skb;
+ struct desc *desc;
+ int n;
+#ifdef __ARMEB__
+ struct sk_buff *temp;
+ u32 phys;
+#endif
+
+ if ((n = queue_get_desc(rxq, port, 0)) < 0) {
+#if DEBUG_RX
+ printk(KERN_DEBUG "%s: eth_poll napi_complete\n",
+ dev->name);
+#endif
+ napi_complete(napi);
+ qmgr_enable_irq(rxq);
+ if (!qmgr_stat_below_low_watermark(rxq) &&
+ napi_reschedule(napi)) { /* not empty again */
+#if DEBUG_RX
+ printk(KERN_DEBUG "%s: eth_poll"
+ " napi_reschedule successed\n",
+ dev->name);
+#endif
+ qmgr_disable_irq(rxq);
+ continue;
+ }
+#if DEBUG_RX
+ printk(KERN_DEBUG "%s: eth_poll all done\n",
+ dev->name);
+#endif
+ return received; /* all work done */
+ }
+
+ desc = rx_desc_ptr(port, n);
+
+#ifdef __ARMEB__
+ if ((skb = netdev_alloc_skb(dev, RX_BUFF_SIZE))) {
+ phys = dma_map_single(&dev->dev, skb->data,
+ RX_BUFF_SIZE, DMA_FROM_DEVICE);
+ if (dma_mapping_error(&dev->dev, phys)) {
+ dev_kfree_skb(skb);
+ skb = NULL;
+ }
+ }
+#else
+ skb = netdev_alloc_skb(dev,
+ ALIGN(NET_IP_ALIGN + desc->pkt_len, 4));
+#endif
+
+ if (!skb) {
+ dev->stats.rx_dropped++;
+ /* put the desc back on RX-ready queue */
+ desc->buf_len = MAX_MRU;
+ desc->pkt_len = 0;
+ queue_put_desc(rxfreeq, rx_desc_phys(port, n), desc);
+ continue;
+ }
+
+ /* process received frame */
+#ifdef __ARMEB__
+ temp = skb;
+ skb = port->rx_buff_tab[n];
+ dma_unmap_single(&dev->dev, desc->data - NET_IP_ALIGN,
+ RX_BUFF_SIZE, DMA_FROM_DEVICE);
+#else
+ dma_sync_single_for_cpu(&dev->dev, desc->data - NET_IP_ALIGN,
+ RX_BUFF_SIZE, DMA_FROM_DEVICE);
+ memcpy_swab32((u32 *)skb->data, (u32 *)port->rx_buff_tab[n],
+ ALIGN(NET_IP_ALIGN + desc->pkt_len, 4) / 4);
+#endif
+ skb_reserve(skb, NET_IP_ALIGN);
+ skb_put(skb, desc->pkt_len);
+
+ debug_pkt(dev, "eth_poll", skb->data, skb->len);
+
+ ixp_rx_timestamp(port, skb);
+ skb->protocol = eth_type_trans(skb, dev);
+ dev->stats.rx_packets++;
+ dev->stats.rx_bytes += skb->len;
+ netif_receive_skb(skb);
+
+ /* put the new buffer on RX-free queue */
+#ifdef __ARMEB__
+ port->rx_buff_tab[n] = temp;
+ desc->data = phys + NET_IP_ALIGN;
+#endif
+ desc->buf_len = MAX_MRU;
+ desc->pkt_len = 0;
+ queue_put_desc(rxfreeq, rx_desc_phys(port, n), desc);
+ received++;
+ }
+
+#if DEBUG_RX
+ printk(KERN_DEBUG "eth_poll(): end, not all work done\n");
+#endif
+ return received; /* not all work done */
+}
+
+
+static void eth_txdone_irq(void *unused)
+{
+ u32 phys;
+
+#if DEBUG_TX
+ printk(KERN_DEBUG DRV_NAME ": eth_txdone_irq\n");
+#endif
+ while ((phys = qmgr_get_entry(TXDONE_QUEUE)) != 0) {
+ u32 npe_id, n_desc;
+ struct port *port;
+ struct desc *desc;
+ int start;
+
+ npe_id = phys & 3;
+ BUG_ON(npe_id >= MAX_NPES);
+ port = npe_port_tab[npe_id];
+ BUG_ON(!port);
+ phys &= ~0x1F; /* mask out non-address bits */
+ n_desc = (phys - tx_desc_phys(port, 0)) / sizeof(struct desc);
+ BUG_ON(n_desc >= TX_DESCS);
+ desc = tx_desc_ptr(port, n_desc);
+ debug_desc(phys, desc);
+
+ if (port->tx_buff_tab[n_desc]) { /* not the draining packet */
+ port->netdev->stats.tx_packets++;
+ port->netdev->stats.tx_bytes += desc->pkt_len;
+
+ dma_unmap_tx(port, desc);
+#if DEBUG_TX
+ printk(KERN_DEBUG "%s: eth_txdone_irq free %p\n",
+ port->netdev->name, port->tx_buff_tab[n_desc]);
+#endif
+ free_buffer_irq(port->tx_buff_tab[n_desc]);
+ port->tx_buff_tab[n_desc] = NULL;
+ }
+
+ start = qmgr_stat_below_low_watermark(port->plat->txreadyq);
+ queue_put_desc(port->plat->txreadyq, phys, desc);
+ if (start) { /* TX-ready queue was empty */
+#if DEBUG_TX
+ printk(KERN_DEBUG "%s: eth_txdone_irq xmit ready\n",
+ port->netdev->name);
+#endif
+ netif_wake_queue(port->netdev);
+ }
+ }
+}
+
+static int eth_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+ struct port *port = netdev_priv(dev);
+ unsigned int txreadyq = port->plat->txreadyq;
+ int len, offset, bytes, n;
+ void *mem;
+ u32 phys;
+ struct desc *desc;
+
+#if DEBUG_TX
+ printk(KERN_DEBUG "%s: eth_xmit\n", dev->name);
+#endif
+
+ if (unlikely(skb->len > MAX_MRU)) {
+ dev_kfree_skb(skb);
+ dev->stats.tx_errors++;
+ return NETDEV_TX_OK;
+ }
+
+ debug_pkt(dev, "eth_xmit", skb->data, skb->len);
+
+ len = skb->len;
+#ifdef __ARMEB__
+ offset = 0; /* no need to keep alignment */
+ bytes = len;
+ mem = skb->data;
+#else
+ offset = (int)skb->data & 3; /* keep 32-bit alignment */
+ bytes = ALIGN(offset + len, 4);
+ if (!(mem = kmalloc(bytes, GFP_ATOMIC))) {
+ dev_kfree_skb(skb);
+ dev->stats.tx_dropped++;
+ return NETDEV_TX_OK;
+ }
+ memcpy_swab32(mem, (u32 *)((int)skb->data & ~3), bytes / 4);
+#endif
+
+ phys = dma_map_single(&dev->dev, mem, bytes, DMA_TO_DEVICE);
+ if (dma_mapping_error(&dev->dev, phys)) {
+ dev_kfree_skb(skb);
+#ifndef __ARMEB__
+ kfree(mem);
+#endif
+ dev->stats.tx_dropped++;
+ return NETDEV_TX_OK;
+ }
+
+ n = queue_get_desc(txreadyq, port, 1);
+ BUG_ON(n < 0);
+ desc = tx_desc_ptr(port, n);
+
+#ifdef __ARMEB__
+ port->tx_buff_tab[n] = skb;
+#else
+ port->tx_buff_tab[n] = mem;
+#endif
+ desc->data = phys + offset;
+ desc->buf_len = desc->pkt_len = len;
+
+ /* NPE firmware pads short frames with zeros internally */
+ wmb();
+ queue_put_desc(TX_QUEUE(port->id), tx_desc_phys(port, n), desc);
+
+ if (qmgr_stat_below_low_watermark(txreadyq)) { /* empty */
+#if DEBUG_TX
+ printk(KERN_DEBUG "%s: eth_xmit queue full\n", dev->name);
+#endif
+ netif_stop_queue(dev);
+ /* we could miss TX ready interrupt */
+ /* really empty in fact */
+ if (!qmgr_stat_below_low_watermark(txreadyq)) {
+#if DEBUG_TX
+ printk(KERN_DEBUG "%s: eth_xmit ready again\n",
+ dev->name);
+#endif
+ netif_wake_queue(dev);
+ }
+ }
+
+#if DEBUG_TX
+ printk(KERN_DEBUG "%s: eth_xmit end\n", dev->name);
+#endif
+
+ ixp_tx_timestamp(port, skb);
+ skb_tx_timestamp(skb);
+
+#ifndef __ARMEB__
+ dev_kfree_skb(skb);
+#endif
+ return NETDEV_TX_OK;
+}
+
+
+static void eth_set_mcast_list(struct net_device *dev)
+{
+ struct port *port = netdev_priv(dev);
+ struct netdev_hw_addr *ha;
+ u8 diffs[ETH_ALEN], *addr;
+ int i;
+ static const u8 allmulti[] = { 0x01, 0x00, 0x00, 0x00, 0x00, 0x00 };
+
+ if (dev->flags & IFF_ALLMULTI) {
+ for (i = 0; i < ETH_ALEN; i++) {
+ __raw_writel(allmulti[i], &port->regs->mcast_addr[i]);
+ __raw_writel(allmulti[i], &port->regs->mcast_mask[i]);
+ }
+ __raw_writel(DEFAULT_RX_CNTRL0 | RX_CNTRL0_ADDR_FLTR_EN,
+ &port->regs->rx_control[0]);
+ return;
+ }
+
+ if ((dev->flags & IFF_PROMISC) || netdev_mc_empty(dev)) {
+ __raw_writel(DEFAULT_RX_CNTRL0 & ~RX_CNTRL0_ADDR_FLTR_EN,
+ &port->regs->rx_control[0]);
+ return;
+ }
+
+ memset(diffs, 0, ETH_ALEN);
+
+ addr = NULL;
+ netdev_for_each_mc_addr(ha, dev) {
+ if (!addr)
+ addr = ha->addr; /* first MAC address */
+ for (i = 0; i < ETH_ALEN; i++)
+ diffs[i] |= addr[i] ^ ha->addr[i];
+ }
+
+ for (i = 0; i < ETH_ALEN; i++) {
+ __raw_writel(addr[i], &port->regs->mcast_addr[i]);
+ __raw_writel(~diffs[i], &port->regs->mcast_mask[i]);
+ }
+
+ __raw_writel(DEFAULT_RX_CNTRL0 | RX_CNTRL0_ADDR_FLTR_EN,
+ &port->regs->rx_control[0]);
+}
+
+
+static int eth_ioctl(struct net_device *dev, struct ifreq *req, int cmd)
+{
+ struct port *port = netdev_priv(dev);
+
+ if (!netif_running(dev))
+ return -EINVAL;
+
+ if (cpu_is_ixp46x() && cmd == SIOCSHWTSTAMP)
+ return hwtstamp_ioctl(dev, req, cmd);
+
+ return phy_mii_ioctl(port->phydev, req, cmd);
+}
+
+/* ethtool support */
+
+static void ixp4xx_get_drvinfo(struct net_device *dev,
+ struct ethtool_drvinfo *info)
+{
+ struct port *port = netdev_priv(dev);
+ strcpy(info->driver, DRV_NAME);
+ snprintf(info->fw_version, sizeof(info->fw_version), "%u:%u:%u:%u",
+ port->firmware[0], port->firmware[1],
+ port->firmware[2], port->firmware[3]);
+ strcpy(info->bus_info, "internal");
+}
+
+static int ixp4xx_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
+{
+ struct port *port = netdev_priv(dev);
+ return phy_ethtool_gset(port->phydev, cmd);
+}
+
+static int ixp4xx_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
+{
+ struct port *port = netdev_priv(dev);
+ return phy_ethtool_sset(port->phydev, cmd);
+}
+
+static int ixp4xx_nway_reset(struct net_device *dev)
+{
+ struct port *port = netdev_priv(dev);
+ return phy_start_aneg(port->phydev);
+}
+
+static const struct ethtool_ops ixp4xx_ethtool_ops = {
+ .get_drvinfo = ixp4xx_get_drvinfo,
+ .get_settings = ixp4xx_get_settings,
+ .set_settings = ixp4xx_set_settings,
+ .nway_reset = ixp4xx_nway_reset,
+ .get_link = ethtool_op_get_link,
+};
+
+
+static int request_queues(struct port *port)
+{
+ int err;
+
+ err = qmgr_request_queue(RXFREE_QUEUE(port->id), RX_DESCS, 0, 0,
+ "%s:RX-free", port->netdev->name);
+ if (err)
+ return err;
+
+ err = qmgr_request_queue(port->plat->rxq, RX_DESCS, 0, 0,
+ "%s:RX", port->netdev->name);
+ if (err)
+ goto rel_rxfree;
+
+ err = qmgr_request_queue(TX_QUEUE(port->id), TX_DESCS, 0, 0,
+ "%s:TX", port->netdev->name);
+ if (err)
+ goto rel_rx;
+
+ err = qmgr_request_queue(port->plat->txreadyq, TX_DESCS, 0, 0,
+ "%s:TX-ready", port->netdev->name);
+ if (err)
+ goto rel_tx;
+
+ /* TX-done queue handles skbs sent out by the NPEs */
+ if (!ports_open) {
+ err = qmgr_request_queue(TXDONE_QUEUE, TXDONE_QUEUE_LEN, 0, 0,
+ "%s:TX-done", DRV_NAME);
+ if (err)
+ goto rel_txready;
+ }
+ return 0;
+
+rel_txready:
+ qmgr_release_queue(port->plat->txreadyq);
+rel_tx:
+ qmgr_release_queue(TX_QUEUE(port->id));
+rel_rx:
+ qmgr_release_queue(port->plat->rxq);
+rel_rxfree:
+ qmgr_release_queue(RXFREE_QUEUE(port->id));
+ printk(KERN_DEBUG "%s: unable to request hardware queues\n",
+ port->netdev->name);
+ return err;
+}
+
+static void release_queues(struct port *port)
+{
+ qmgr_release_queue(RXFREE_QUEUE(port->id));
+ qmgr_release_queue(port->plat->rxq);
+ qmgr_release_queue(TX_QUEUE(port->id));
+ qmgr_release_queue(port->plat->txreadyq);
+
+ if (!ports_open)
+ qmgr_release_queue(TXDONE_QUEUE);
+}
+
+static int init_queues(struct port *port)
+{
+ int i;
+
+ if (!ports_open)
+ if (!(dma_pool = dma_pool_create(DRV_NAME, NULL,
+ POOL_ALLOC_SIZE, 32, 0)))
+ return -ENOMEM;
+
+ if (!(port->desc_tab = dma_pool_alloc(dma_pool, GFP_KERNEL,
+ &port->desc_tab_phys)))
+ return -ENOMEM;
+ memset(port->desc_tab, 0, POOL_ALLOC_SIZE);
+ memset(port->rx_buff_tab, 0, sizeof(port->rx_buff_tab)); /* tables */
+ memset(port->tx_buff_tab, 0, sizeof(port->tx_buff_tab));
+
+ /* Setup RX buffers */
+ for (i = 0; i < RX_DESCS; i++) {
+ struct desc *desc = rx_desc_ptr(port, i);
+ buffer_t *buff; /* skb or kmalloc()ated memory */
+ void *data;
+#ifdef __ARMEB__
+ if (!(buff = netdev_alloc_skb(port->netdev, RX_BUFF_SIZE)))
+ return -ENOMEM;
+ data = buff->data;
+#else
+ if (!(buff = kmalloc(RX_BUFF_SIZE, GFP_KERNEL)))
+ return -ENOMEM;
+ data = buff;
+#endif
+ desc->buf_len = MAX_MRU;
+ desc->data = dma_map_single(&port->netdev->dev, data,
+ RX_BUFF_SIZE, DMA_FROM_DEVICE);
+ if (dma_mapping_error(&port->netdev->dev, desc->data)) {
+ free_buffer(buff);
+ return -EIO;
+ }
+ desc->data += NET_IP_ALIGN;
+ port->rx_buff_tab[i] = buff;
+ }
+
+ return 0;
+}
+
+static void destroy_queues(struct port *port)
+{
+ int i;
+
+ if (port->desc_tab) {
+ for (i = 0; i < RX_DESCS; i++) {
+ struct desc *desc = rx_desc_ptr(port, i);
+ buffer_t *buff = port->rx_buff_tab[i];
+ if (buff) {
+ dma_unmap_single(&port->netdev->dev,
+ desc->data - NET_IP_ALIGN,
+ RX_BUFF_SIZE, DMA_FROM_DEVICE);
+ free_buffer(buff);
+ }
+ }
+ for (i = 0; i < TX_DESCS; i++) {
+ struct desc *desc = tx_desc_ptr(port, i);
+ buffer_t *buff = port->tx_buff_tab[i];
+ if (buff) {
+ dma_unmap_tx(port, desc);
+ free_buffer(buff);
+ }
+ }
+ dma_pool_free(dma_pool, port->desc_tab, port->desc_tab_phys);
+ port->desc_tab = NULL;
+ }
+
+ if (!ports_open && dma_pool) {
+ dma_pool_destroy(dma_pool);
+ dma_pool = NULL;
+ }
+}
+
+static int eth_open(struct net_device *dev)
+{
+ struct port *port = netdev_priv(dev);
+ struct npe *npe = port->npe;
+ struct msg msg;
+ int i, err;
+
+ if (!npe_running(npe)) {
+ err = npe_load_firmware(npe, npe_name(npe), &dev->dev);
+ if (err)
+ return err;
+
+ if (npe_recv_message(npe, &msg, "ETH_GET_STATUS")) {
+ printk(KERN_ERR "%s: %s not responding\n", dev->name,
+ npe_name(npe));
+ return -EIO;
+ }
+ port->firmware[0] = msg.byte4;
+ port->firmware[1] = msg.byte5;
+ port->firmware[2] = msg.byte6;
+ port->firmware[3] = msg.byte7;
+ }
+
+ memset(&msg, 0, sizeof(msg));
+ msg.cmd = NPE_VLAN_SETRXQOSENTRY;
+ msg.eth_id = port->id;
+ msg.byte5 = port->plat->rxq | 0x80;
+ msg.byte7 = port->plat->rxq << 4;
+ for (i = 0; i < 8; i++) {
+ msg.byte3 = i;
+ if (npe_send_recv_message(port->npe, &msg, "ETH_SET_RXQ"))
+ return -EIO;
+ }
+
+ msg.cmd = NPE_EDB_SETPORTADDRESS;
+ msg.eth_id = PHYSICAL_ID(port->id);
+ msg.byte2 = dev->dev_addr[0];
+ msg.byte3 = dev->dev_addr[1];
+ msg.byte4 = dev->dev_addr[2];
+ msg.byte5 = dev->dev_addr[3];
+ msg.byte6 = dev->dev_addr[4];
+ msg.byte7 = dev->dev_addr[5];
+ if (npe_send_recv_message(port->npe, &msg, "ETH_SET_MAC"))
+ return -EIO;
+
+ memset(&msg, 0, sizeof(msg));
+ msg.cmd = NPE_FW_SETFIREWALLMODE;
+ msg.eth_id = port->id;
+ if (npe_send_recv_message(port->npe, &msg, "ETH_SET_FIREWALL_MODE"))
+ return -EIO;
+
+ if ((err = request_queues(port)) != 0)
+ return err;
+
+ if ((err = init_queues(port)) != 0) {
+ destroy_queues(port);
+ release_queues(port);
+ return err;
+ }
+
+ port->speed = 0; /* force "link up" message */
+ phy_start(port->phydev);
+
+ for (i = 0; i < ETH_ALEN; i++)
+ __raw_writel(dev->dev_addr[i], &port->regs->hw_addr[i]);
+ __raw_writel(0x08, &port->regs->random_seed);
+ __raw_writel(0x12, &port->regs->partial_empty_threshold);
+ __raw_writel(0x30, &port->regs->partial_full_threshold);
+ __raw_writel(0x08, &port->regs->tx_start_bytes);
+ __raw_writel(0x15, &port->regs->tx_deferral);
+ __raw_writel(0x08, &port->regs->tx_2part_deferral[0]);
+ __raw_writel(0x07, &port->regs->tx_2part_deferral[1]);
+ __raw_writel(0x80, &port->regs->slot_time);
+ __raw_writel(0x01, &port->regs->int_clock_threshold);
+
+ /* Populate queues with buffers, no failure after this point */
+ for (i = 0; i < TX_DESCS; i++)
+ queue_put_desc(port->plat->txreadyq,
+ tx_desc_phys(port, i), tx_desc_ptr(port, i));
+
+ for (i = 0; i < RX_DESCS; i++)
+ queue_put_desc(RXFREE_QUEUE(port->id),
+ rx_desc_phys(port, i), rx_desc_ptr(port, i));
+
+ __raw_writel(TX_CNTRL1_RETRIES, &port->regs->tx_control[1]);
+ __raw_writel(DEFAULT_TX_CNTRL0, &port->regs->tx_control[0]);
+ __raw_writel(0, &port->regs->rx_control[1]);
+ __raw_writel(DEFAULT_RX_CNTRL0, &port->regs->rx_control[0]);
+
+ napi_enable(&port->napi);
+ eth_set_mcast_list(dev);
+ netif_start_queue(dev);
+
+ qmgr_set_irq(port->plat->rxq, QUEUE_IRQ_SRC_NOT_EMPTY,
+ eth_rx_irq, dev);
+ if (!ports_open) {
+ qmgr_set_irq(TXDONE_QUEUE, QUEUE_IRQ_SRC_NOT_EMPTY,
+ eth_txdone_irq, NULL);
+ qmgr_enable_irq(TXDONE_QUEUE);
+ }
+ ports_open++;
+ /* we may already have RX data, enables IRQ */
+ napi_schedule(&port->napi);
+ return 0;
+}
+
+static int eth_close(struct net_device *dev)
+{
+ struct port *port = netdev_priv(dev);
+ struct msg msg;
+ int buffs = RX_DESCS; /* allocated RX buffers */
+ int i;
+
+ ports_open--;
+ qmgr_disable_irq(port->plat->rxq);
+ napi_disable(&port->napi);
+ netif_stop_queue(dev);
+
+ while (queue_get_desc(RXFREE_QUEUE(port->id), port, 0) >= 0)
+ buffs--;
+
+ memset(&msg, 0, sizeof(msg));
+ msg.cmd = NPE_SETLOOPBACK_MODE;
+ msg.eth_id = port->id;
+ msg.byte3 = 1;
+ if (npe_send_recv_message(port->npe, &msg, "ETH_ENABLE_LOOPBACK"))
+ printk(KERN_CRIT "%s: unable to enable loopback\n", dev->name);
+
+ i = 0;
+ do { /* drain RX buffers */
+ while (queue_get_desc(port->plat->rxq, port, 0) >= 0)
+ buffs--;
+ if (!buffs)
+ break;
+ if (qmgr_stat_empty(TX_QUEUE(port->id))) {
+ /* we have to inject some packet */
+ struct desc *desc;
+ u32 phys;
+ int n = queue_get_desc(port->plat->txreadyq, port, 1);
+ BUG_ON(n < 0);
+ desc = tx_desc_ptr(port, n);
+ phys = tx_desc_phys(port, n);
+ desc->buf_len = desc->pkt_len = 1;
+ wmb();
+ queue_put_desc(TX_QUEUE(port->id), phys, desc);
+ }
+ udelay(1);
+ } while (++i < MAX_CLOSE_WAIT);
+
+ if (buffs)
+ printk(KERN_CRIT "%s: unable to drain RX queue, %i buffer(s)"
+ " left in NPE\n", dev->name, buffs);
+#if DEBUG_CLOSE
+ if (!buffs)
+ printk(KERN_DEBUG "Draining RX queue took %i cycles\n", i);
+#endif
+
+ buffs = TX_DESCS;
+ while (queue_get_desc(TX_QUEUE(port->id), port, 1) >= 0)
+ buffs--; /* cancel TX */
+
+ i = 0;
+ do {
+ while (queue_get_desc(port->plat->txreadyq, port, 1) >= 0)
+ buffs--;
+ if (!buffs)
+ break;
+ } while (++i < MAX_CLOSE_WAIT);
+
+ if (buffs)
+ printk(KERN_CRIT "%s: unable to drain TX queue, %i buffer(s) "
+ "left in NPE\n", dev->name, buffs);
+#if DEBUG_CLOSE
+ if (!buffs)
+ printk(KERN_DEBUG "Draining TX queues took %i cycles\n", i);
+#endif
+
+ msg.byte3 = 0;
+ if (npe_send_recv_message(port->npe, &msg, "ETH_DISABLE_LOOPBACK"))
+ printk(KERN_CRIT "%s: unable to disable loopback\n",
+ dev->name);
+
+ phy_stop(port->phydev);
+
+ if (!ports_open)
+ qmgr_disable_irq(TXDONE_QUEUE);
+ destroy_queues(port);
+ release_queues(port);
+ return 0;
+}
+
+static const struct net_device_ops ixp4xx_netdev_ops = {
+ .ndo_open = eth_open,
+ .ndo_stop = eth_close,
+ .ndo_start_xmit = eth_xmit,
+ .ndo_set_multicast_list = eth_set_mcast_list,
+ .ndo_do_ioctl = eth_ioctl,
+ .ndo_change_mtu = eth_change_mtu,
+ .ndo_set_mac_address = eth_mac_addr,
+ .ndo_validate_addr = eth_validate_addr,
+};
+
+static int __devinit eth_init_one(struct platform_device *pdev)
+{
+ struct port *port;
+ struct net_device *dev;
+ struct eth_plat_info *plat = pdev->dev.platform_data;
+ u32 regs_phys;
+ char phy_id[MII_BUS_ID_SIZE + 3];
+ int err;
+
+ if (ptp_filter_init(ptp_filter, ARRAY_SIZE(ptp_filter))) {
+ pr_err("ixp4xx_eth: bad ptp filter\n");
+ return -EINVAL;
+ }
+
+ if (!(dev = alloc_etherdev(sizeof(struct port))))
+ return -ENOMEM;
+
+ SET_NETDEV_DEV(dev, &pdev->dev);
+ port = netdev_priv(dev);
+ port->netdev = dev;
+ port->id = pdev->id;
+
+ switch (port->id) {
+ case IXP4XX_ETH_NPEA:
+ port->regs = (struct eth_regs __iomem *)IXP4XX_EthA_BASE_VIRT;
+ regs_phys = IXP4XX_EthA_BASE_PHYS;
+ break;
+ case IXP4XX_ETH_NPEB:
+ port->regs = (struct eth_regs __iomem *)IXP4XX_EthB_BASE_VIRT;
+ regs_phys = IXP4XX_EthB_BASE_PHYS;
+ break;
+ case IXP4XX_ETH_NPEC:
+ port->regs = (struct eth_regs __iomem *)IXP4XX_EthC_BASE_VIRT;
+ regs_phys = IXP4XX_EthC_BASE_PHYS;
+ break;
+ default:
+ err = -ENODEV;
+ goto err_free;
+ }
+
+ dev->netdev_ops = &ixp4xx_netdev_ops;
+ dev->ethtool_ops = &ixp4xx_ethtool_ops;
+ dev->tx_queue_len = 100;
+
+ netif_napi_add(dev, &port->napi, eth_poll, NAPI_WEIGHT);
+
+ if (!(port->npe = npe_request(NPE_ID(port->id)))) {
+ err = -EIO;
+ goto err_free;
+ }
+
+ port->mem_res = request_mem_region(regs_phys, REGS_SIZE, dev->name);
+ if (!port->mem_res) {
+ err = -EBUSY;
+ goto err_npe_rel;
+ }
+
+ port->plat = plat;
+ npe_port_tab[NPE_ID(port->id)] = port;
+ memcpy(dev->dev_addr, plat->hwaddr, ETH_ALEN);
+
+ platform_set_drvdata(pdev, dev);
+
+ __raw_writel(DEFAULT_CORE_CNTRL | CORE_RESET,
+ &port->regs->core_control);
+ udelay(50);
+ __raw_writel(DEFAULT_CORE_CNTRL, &port->regs->core_control);
+ udelay(50);
+
+ snprintf(phy_id, MII_BUS_ID_SIZE + 3, PHY_ID_FMT, "0", plat->phy);
+ port->phydev = phy_connect(dev, phy_id, &ixp4xx_adjust_link, 0,
+ PHY_INTERFACE_MODE_MII);
+ if (IS_ERR(port->phydev)) {
+ err = PTR_ERR(port->phydev);
+ goto err_free_mem;
+ }
+
+ port->phydev->irq = PHY_POLL;
+
+ if ((err = register_netdev(dev)))
+ goto err_phy_dis;
+
+ printk(KERN_INFO "%s: MII PHY %i on %s\n", dev->name, plat->phy,
+ npe_name(port->npe));
+
+ return 0;
+
+err_phy_dis:
+ phy_disconnect(port->phydev);
+err_free_mem:
+ npe_port_tab[NPE_ID(port->id)] = NULL;
+ platform_set_drvdata(pdev, NULL);
+ release_resource(port->mem_res);
+err_npe_rel:
+ npe_release(port->npe);
+err_free:
+ free_netdev(dev);
+ return err;
+}
+
+static int __devexit eth_remove_one(struct platform_device *pdev)
+{
+ struct net_device *dev = platform_get_drvdata(pdev);
+ struct port *port = netdev_priv(dev);
+
+ unregister_netdev(dev);
+ phy_disconnect(port->phydev);
+ npe_port_tab[NPE_ID(port->id)] = NULL;
+ platform_set_drvdata(pdev, NULL);
+ npe_release(port->npe);
+ release_resource(port->mem_res);
+ free_netdev(dev);
+ return 0;
+}
+
+static struct platform_driver ixp4xx_eth_driver = {
+ .driver.name = DRV_NAME,
+ .probe = eth_init_one,
+ .remove = eth_remove_one,
+};
+
+static int __init eth_init_module(void)
+{
+ int err;
+ if ((err = ixp4xx_mdio_register()))
+ return err;
+ return platform_driver_register(&ixp4xx_eth_driver);
+}
+
+static void __exit eth_cleanup_module(void)
+{
+ platform_driver_unregister(&ixp4xx_eth_driver);
+ ixp4xx_mdio_remove();
+}
+
+MODULE_AUTHOR("Krzysztof Halasa");
+MODULE_DESCRIPTION("Intel IXP4xx Ethernet driver");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:ixp4xx_eth");
+module_init(eth_init_module);
+module_exit(eth_cleanup_module);
+++ /dev/null
-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.
+++ /dev/null
-obj-$(CONFIG_ENP2611_MSF_NET) += enp2611_mod.o
-
-enp2611_mod-objs := caleb.o enp2611.o ixp2400-msf.o ixpdev.o pm3386.o
+++ /dev/null
-/*
- * 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);
-}
+++ /dev/null
-/*
- * 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
+++ /dev/null
-/*
- * 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/module.h>
-#include <linux/kernel.h>
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/init.h>
-#include <linux/moduleparam.h>
-#include <asm/hardware/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
- }
-};
-
-static struct net_device *nds[3];
-static struct timer_list link_check_timer;
-
-/* @@@ 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];
- if (dev == NULL)
- continue;
-
- 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 ports;
- int i;
-
- if (!machine_is_enp2611())
- return -ENODEV;
-
- caleb_reset();
- pm3386_reset();
-
- ports = pm3386_port_count();
- for (i = 0; i < ports; i++) {
- nds[i] = ixpdev_alloc(i, sizeof(struct ixpdev_priv));
- if (nds[i] == NULL) {
- while (--i >= 0)
- free_netdev(nds[i]);
- return -ENOMEM;
- }
-
- pm3386_init_port(i);
- pm3386_get_mac(i, nds[i]->dev_addr);
- }
-
- ixp2400_msf_init(&enp2611_msf_parameters);
-
- if (ixpdev_init(ports, nds, enp2611_set_port_admin_status)) {
- for (i = 0; i < ports; i++)
- if (nds[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");
+++ /dev/null
-/*
- * 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/kernel.h>
-#include <linux/init.h>
-#include <mach/hardware.h>
-#include <mach/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);
-}
+++ /dev/null
-/*
- * 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
+++ /dev/null
-/*
- * 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
-
-
+++ /dev/null
-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,
- }
-};
+++ /dev/null
-/*
- * 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
-
-
+++ /dev/null
-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,
- }
-};
+++ /dev/null
-/*
- * 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/module.h>
-#include <linux/kernel.h>
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/moduleparam.h>
-#include <linux/gfp.h>
-#include <asm/hardware/uengine.h>
-#include <asm/io.h>
-#include "ixp2400_rx.ucode"
-#include "ixp2400_tx.ucode"
-#include "ixpdev_priv.h"
-#include "ixpdev.h"
-#include "pm3386.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;
- unsigned long flags;
-
- if (unlikely(skb->len > PAGE_SIZE)) {
- /* @@@ Count drops. */
- dev_kfree_skb(skb);
- return NETDEV_TX_OK;
- }
-
- 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)));
-
- local_irq_save(flags);
- ip->tx_queue_entries++;
- if (ip->tx_queue_entries == TX_BUF_COUNT_PER_CHAN)
- netif_stop_queue(dev);
- local_irq_restore(flags);
-
- return NETDEV_TX_OK;
-}
-
-
-static int ixpdev_rx(struct net_device *dev, int processed, int budget)
-{
- while (processed < budget) {
- 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 = netdev_alloc_skb_ip_align(dev, desc->pkt_length);
- if (likely(skb != NULL)) {
- skb_copy_to_linear_data(skb, buf, desc->pkt_length);
- skb_put(skb, desc->pkt_length);
- skb->protocol = eth_type_trans(skb, nds[desc->channel]);
-
- netif_receive_skb(skb);
- }
-
-err:
- ixp2000_reg_write(RING_RX_PENDING, _desc);
- processed++;
- }
-
- return processed;
-}
-
-/* dev always points to nds[0]. */
-static int ixpdev_poll(struct napi_struct *napi, int budget)
-{
- struct ixpdev_priv *ip = container_of(napi, struct ixpdev_priv, napi);
- struct net_device *dev = ip->dev;
- int rx;
-
- rx = 0;
- do {
- ixp2000_reg_write(IXP2000_IRQ_THD_RAW_STATUS_A_0, 0x00ff);
-
- rx = ixpdev_rx(dev, rx, budget);
- if (rx >= budget)
- break;
- } while (ixp2000_reg_read(IXP2000_IRQ_THD_RAW_STATUS_A_0) & 0x00ff);
-
- napi_complete(napi);
- ixp2000_reg_write(IXP2000_IRQ_THD_ENABLE_SET_A_0, 0x00ff);
-
- return rx;
-}
-
-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)
-{
- 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) {
- struct net_device *dev = nds[0];
- struct ixpdev_priv *ip = netdev_priv(dev);
-
- ixp2000_reg_wrb(IXP2000_IRQ_THD_ENABLE_CLEAR_A_0, 0x00ff);
- if (likely(napi_schedule_prep(&ip->napi))) {
- __napi_schedule(&ip->napi);
- } 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);
- enable_irq(IRQ_IXP2000_THDA0);
-}
-#endif
-
-static int ixpdev_open(struct net_device *dev)
-{
- struct ixpdev_priv *ip = netdev_priv(dev);
- int err;
-
- napi_enable(&ip->napi);
- if (!nds_open++) {
- err = request_irq(IRQ_IXP2000_THDA0, ixpdev_interrupt,
- IRQF_SHARED, "ixp2000_eth", nds);
- if (err) {
- nds_open--;
- napi_disable(&ip->napi);
- 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);
- napi_disable(&ip->napi);
- 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;
-}
-
-static struct net_device_stats *ixpdev_get_stats(struct net_device *dev)
-{
- struct ixpdev_priv *ip = netdev_priv(dev);
-
- pm3386_get_stats(ip->channel, &(dev->stats));
-
- return &(dev->stats);
-}
-
-static const struct net_device_ops ixpdev_netdev_ops = {
- .ndo_open = ixpdev_open,
- .ndo_stop = ixpdev_close,
- .ndo_start_xmit = ixpdev_xmit,
- .ndo_change_mtu = eth_change_mtu,
- .ndo_validate_addr = eth_validate_addr,
- .ndo_set_mac_address = eth_mac_addr,
- .ndo_get_stats = ixpdev_get_stats,
-#ifdef CONFIG_NET_POLL_CONTROLLER
- .ndo_poll_controller = ixpdev_poll_controller,
-#endif
-};
-
-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->netdev_ops = &ixpdev_netdev_ops;
-
- dev->features |= NETIF_F_SG | NETIF_F_HW_CSUM;
-
- ip = netdev_priv(dev);
- ip->dev = dev;
- netif_napi_add(dev, &ip->napi, ixpdev_poll, 64);
- 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;
-
- BUILD_BUG_ON(RX_BUF_COUNT > 192 || TX_BUF_COUNT > 192);
-
- 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));
-}
+++ /dev/null
-/*
- * 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
-{
- struct net_device *dev;
- struct napi_struct napi;
- 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
+++ /dev/null
-/*
- * 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
+++ /dev/null
-/*
- * 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/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);
-}
-
-int pm3386_secondary_present(void)
-{
- return pm3386_reg_read(1, 0) == 0x3386;
-}
-
-void pm3386_reset(void)
-{
- u8 mac[3][6];
- int secondary;
-
- secondary = pm3386_secondary_present();
-
- /* Save programmed MAC addresses. */
- pm3386_get_mac(0, mac[0]);
- pm3386_get_mac(1, mac[1]);
- if (secondary)
- pm3386_get_mac(2, mac[2]);
-
- /* Assert analog and digital reset. */
- pm3386_reg_write(0, 0x002, 0x0060);
- if (secondary)
- pm3386_reg_write(1, 0x002, 0x0060);
- mdelay(1);
-
- /* Deassert analog reset. */
- pm3386_reg_write(0, 0x002, 0x0062);
- if (secondary)
- pm3386_reg_write(1, 0x002, 0x0062);
- mdelay(10);
-
- /* Deassert digital reset. */
- pm3386_reg_write(0, 0x002, 0x0063);
- if (secondary)
- pm3386_reg_write(1, 0x002, 0x0063);
- mdelay(10);
-
- /* Restore programmed MAC addresses. */
- pm3386_set_mac(0, mac[0]);
- pm3386_set_mac(1, mac[1]);
- if (secondary)
- pm3386_set_mac(2, mac[2]);
-
- /* Disable carrier on all ports. */
- pm3386_set_carrier(0, 0);
- pm3386_set_carrier(1, 0);
- if (secondary)
- pm3386_set_carrier(2, 0);
-}
-
-static u16 swaph(u16 x)
-{
- return ((x << 8) | (x >> 8)) & 0xffff;
-}
-
-int pm3386_port_count(void)
-{
- return 2 + pm3386_secondary_present();
-}
-
-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");
+++ /dev/null
-/*
- * 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);
-int pm3386_port_count(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
projects / firefly-linux-kernel-4.4.55.git / commitdiff