diff options
Diffstat (limited to 'arch/ppc/8260_io/fcc_enet.c')
| -rw-r--r-- | arch/ppc/8260_io/fcc_enet.c | 2379 |
1 files changed, 0 insertions, 2379 deletions
diff --git a/arch/ppc/8260_io/fcc_enet.c b/arch/ppc/8260_io/fcc_enet.c deleted file mode 100644 index d38b57e..0000000 --- a/arch/ppc/8260_io/fcc_enet.c +++ /dev/null @@ -1,2379 +0,0 @@ -/* - * Fast Ethernet Controller (FCC) driver for Motorola MPC8260. - * Copyright (c) 2000 MontaVista Software, Inc. Dan Malek (dmalek@jlc.net) - * - * This version of the driver is a combination of the 8xx fec and - * 8260 SCC Ethernet drivers. This version has some additional - * configuration options, which should probably be moved out of - * here. This driver currently works for the EST SBC8260, - * SBS Diablo/BCM, Embedded Planet RPX6, TQM8260, and others. - * - * Right now, I am very watseful with the buffers. I allocate memory - * pages and then divide them into 2K frame buffers. This way I know I - * have buffers large enough to hold one frame within one buffer descriptor. - * Once I get this working, I will use 64 or 128 byte CPM buffers, which - * will be much more memory efficient and will easily handle lots of - * small packets. Since this is a cache coherent processor and CPM, - * I could also preallocate SKB's and use them directly on the interface. - * - * 2004-12 Leo Li (leoli@freescale.com) - * - Rework the FCC clock configuration part, make it easier to configure. - * - */ - -#include <linux/kernel.h> -#include <linux/sched.h> -#include <linux/string.h> -#include <linux/ptrace.h> -#include <linux/errno.h> -#include <linux/ioport.h> -#include <linux/slab.h> -#include <linux/interrupt.h> -#include <linux/init.h> -#include <linux/delay.h> -#include <linux/netdevice.h> -#include <linux/etherdevice.h> -#include <linux/skbuff.h> -#include <linux/spinlock.h> -#include <linux/mii.h> -#include <linux/workqueue.h> -#include <linux/bitops.h> - -#include <asm/immap_cpm2.h> -#include <asm/pgtable.h> -#include <asm/mpc8260.h> -#include <asm/irq.h> -#include <asm/uaccess.h> -#include <asm/signal.h> - -/* We can't use the PHY interrupt if we aren't using MDIO. */ -#if !defined(CONFIG_USE_MDIO) -#undef PHY_INTERRUPT -#endif - -/* If we have a PHY interrupt, we will advertise both full-duplex and half- - * duplex capabilities. If we don't have a PHY interrupt, then we will only - * advertise half-duplex capabilities. - */ -#define MII_ADVERTISE_HALF (ADVERTISE_100HALF | ADVERTISE_10HALF | \ - ADVERTISE_CSMA) -#define MII_ADVERTISE_ALL (ADVERTISE_100FULL | ADVERTISE_10FULL | \ - MII_ADVERTISE_HALF) -#ifdef PHY_INTERRUPT -#define MII_ADVERTISE_DEFAULT MII_ADVERTISE_ALL -#else -#define MII_ADVERTISE_DEFAULT MII_ADVERTISE_HALF -#endif -#include <asm/cpm2.h> - -/* The transmitter timeout - */ -#define TX_TIMEOUT (2*HZ) - -#ifdef CONFIG_USE_MDIO -/* Forward declarations of some structures to support different PHYs */ - -typedef struct { - uint mii_data; - void (*funct)(uint mii_reg, struct net_device *dev); -} phy_cmd_t; - -typedef struct { - uint id; - char *name; - - const phy_cmd_t *config; - const phy_cmd_t *startup; - const phy_cmd_t *ack_int; - const phy_cmd_t *shutdown; -} phy_info_t; - -/* values for phy_status */ - -#define PHY_CONF_ANE 0x0001 /* 1 auto-negotiation enabled */ -#define PHY_CONF_LOOP 0x0002 /* 1 loopback mode enabled */ -#define PHY_CONF_SPMASK 0x00f0 /* mask for speed */ -#define PHY_CONF_10HDX 0x0010 /* 10 Mbit half duplex supported */ -#define PHY_CONF_10FDX 0x0020 /* 10 Mbit full duplex supported */ -#define PHY_CONF_100HDX 0x0040 /* 100 Mbit half duplex supported */ -#define PHY_CONF_100FDX 0x0080 /* 100 Mbit full duplex supported */ - -#define PHY_STAT_LINK 0x0100 /* 1 up - 0 down */ -#define PHY_STAT_FAULT 0x0200 /* 1 remote fault */ -#define PHY_STAT_ANC 0x0400 /* 1 auto-negotiation complete */ -#define PHY_STAT_SPMASK 0xf000 /* mask for speed */ -#define PHY_STAT_10HDX 0x1000 /* 10 Mbit half duplex selected */ -#define PHY_STAT_10FDX 0x2000 /* 10 Mbit full duplex selected */ -#define PHY_STAT_100HDX 0x4000 /* 100 Mbit half duplex selected */ -#define PHY_STAT_100FDX 0x8000 /* 100 Mbit full duplex selected */ -#endif /* CONFIG_USE_MDIO */ - -/* The number of Tx and Rx buffers. These are allocated from the page - * pool. The code may assume these are power of two, so it is best - * to keep them that size. - * We don't need to allocate pages for the transmitter. We just use - * the skbuffer directly. - */ -#define FCC_ENET_RX_PAGES 16 -#define FCC_ENET_RX_FRSIZE 2048 -#define FCC_ENET_RX_FRPPG (PAGE_SIZE / FCC_ENET_RX_FRSIZE) -#define RX_RING_SIZE (FCC_ENET_RX_FRPPG * FCC_ENET_RX_PAGES) -#define TX_RING_SIZE 16 /* Must be power of two */ -#define TX_RING_MOD_MASK 15 /* for this to work */ - -/* The FCC stores dest/src/type, data, and checksum for receive packets. - * size includes support for VLAN - */ -#define PKT_MAXBUF_SIZE 1522 -#define PKT_MINBUF_SIZE 64 - -/* Maximum input DMA size. Must be a should(?) be a multiple of 4. - * size includes support for VLAN - */ -#define PKT_MAXDMA_SIZE 1524 - -/* Maximum input buffer size. Must be a multiple of 32. -*/ -#define PKT_MAXBLR_SIZE 1536 - -static int fcc_enet_open(struct net_device *dev); -static int fcc_enet_start_xmit(struct sk_buff *skb, struct net_device *dev); -static int fcc_enet_rx(struct net_device *dev); -static irqreturn_t fcc_enet_interrupt(int irq, void *dev_id); -static int fcc_enet_close(struct net_device *dev); -static struct net_device_stats *fcc_enet_get_stats(struct net_device *dev); -/* static void set_multicast_list(struct net_device *dev); */ -static void fcc_restart(struct net_device *dev, int duplex); -static void fcc_stop(struct net_device *dev); -static int fcc_enet_set_mac_address(struct net_device *dev, void *addr); - -/* These will be configurable for the FCC choice. - * Multiple ports can be configured. There is little choice among the - * I/O pins to the PHY, except the clocks. We will need some board - * dependent clock selection. - * Why in the hell did I put these inside #ifdef's? I dunno, maybe to - * help show what pins are used for each device. - */ - -/* Since the CLK setting changes greatly from board to board, I changed - * it to a easy way. You just need to specify which CLK number to use. - * Note that only limited choices can be make on each port. - */ - -/* FCC1 Clock Source Configuration. There are board specific. - Can only choose from CLK9-12 */ -#ifdef CONFIG_SBC82xx -#define F1_RXCLK 9 -#define F1_TXCLK 10 -#else -#define F1_RXCLK 12 -#define F1_TXCLK 11 -#endif - -/* FCC2 Clock Source Configuration. There are board specific. - Can only choose from CLK13-16 */ -#define F2_RXCLK 13 -#define F2_TXCLK 14 - -/* FCC3 Clock Source Configuration. There are board specific. - Can only choose from CLK13-16 */ -#define F3_RXCLK 15 -#define F3_TXCLK 16 - -/* Automatically generates register configurations */ -#define PC_CLK(x) ((uint)(1<<(x-1))) /* FCC CLK I/O ports */ - -#define CMXFCR_RF1CS(x) ((uint)((x-5)<<27)) /* FCC1 Receive Clock Source */ -#define CMXFCR_TF1CS(x) ((uint)((x-5)<<24)) /* FCC1 Transmit Clock Source */ -#define CMXFCR_RF2CS(x) ((uint)((x-9)<<19)) /* FCC2 Receive Clock Source */ -#define CMXFCR_TF2CS(x) ((uint)((x-9)<<16)) /* FCC2 Transmit Clock Source */ -#define CMXFCR_RF3CS(x) ((uint)((x-9)<<11)) /* FCC3 Receive Clock Source */ -#define CMXFCR_TF3CS(x) ((uint)((x-9)<<8)) /* FCC3 Transmit Clock Source */ - -#define PC_F1RXCLK PC_CLK(F1_RXCLK) -#define PC_F1TXCLK PC_CLK(F1_TXCLK) -#define CMX1_CLK_ROUTE (CMXFCR_RF1CS(F1_RXCLK) | CMXFCR_TF1CS(F1_TXCLK)) -#define CMX1_CLK_MASK ((uint)0xff000000) - -#define PC_F2RXCLK PC_CLK(F2_RXCLK) -#define PC_F2TXCLK PC_CLK(F2_TXCLK) -#define CMX2_CLK_ROUTE (CMXFCR_RF2CS(F2_RXCLK) | CMXFCR_TF2CS(F2_TXCLK)) -#define CMX2_CLK_MASK ((uint)0x00ff0000) - -#define PC_F3RXCLK PC_CLK(F3_RXCLK) -#define PC_F3TXCLK PC_CLK(F3_TXCLK) -#define CMX3_CLK_ROUTE (CMXFCR_RF3CS(F3_RXCLK) | CMXFCR_TF3CS(F3_TXCLK)) -#define CMX3_CLK_MASK ((uint)0x0000ff00) - - -/* I/O Pin assignment for FCC1. I don't yet know the best way to do this, - * but there is little variation among the choices. - */ -#define PA1_COL ((uint)0x00000001) -#define PA1_CRS ((uint)0x00000002) -#define PA1_TXER ((uint)0x00000004) -#define PA1_TXEN ((uint)0x00000008) -#define PA1_RXDV ((uint)0x00000010) -#define PA1_RXER ((uint)0x00000020) -#define PA1_TXDAT ((uint)0x00003c00) -#define PA1_RXDAT ((uint)0x0003c000) -#define PA1_PSORA_BOUT (PA1_RXDAT | PA1_TXDAT) -#define PA1_PSORA_BIN (PA1_COL | PA1_CRS | PA1_TXER | PA1_TXEN | \ - PA1_RXDV | PA1_RXER) -#define PA1_DIRA_BOUT (PA1_RXDAT | PA1_CRS | PA1_COL | PA1_RXER | PA1_RXDV) -#define PA1_DIRA_BIN (PA1_TXDAT | PA1_TXEN | PA1_TXER) - - -/* I/O Pin assignment for FCC2. I don't yet know the best way to do this, - * but there is little variation among the choices. - */ -#define PB2_TXER ((uint)0x00000001) -#define PB2_RXDV ((uint)0x00000002) -#define PB2_TXEN ((uint)0x00000004) -#define PB2_RXER ((uint)0x00000008) -#define PB2_COL ((uint)0x00000010) -#define PB2_CRS ((uint)0x00000020) -#define PB2_TXDAT ((uint)0x000003c0) -#define PB2_RXDAT ((uint)0x00003c00) -#define PB2_PSORB_BOUT (PB2_RXDAT | PB2_TXDAT | PB2_CRS | PB2_COL | \ - PB2_RXER | PB2_RXDV | PB2_TXER) -#define PB2_PSORB_BIN (PB2_TXEN) -#define PB2_DIRB_BOUT (PB2_RXDAT | PB2_CRS | PB2_COL | PB2_RXER | PB2_RXDV) -#define PB2_DIRB_BIN (PB2_TXDAT | PB2_TXEN | PB2_TXER) - - -/* I/O Pin assignment for FCC3. I don't yet know the best way to do this, - * but there is little variation among the choices. - */ -#define PB3_RXDV ((uint)0x00004000) -#define PB3_RXER ((uint)0x00008000) -#define PB3_TXER ((uint)0x00010000) -#define PB3_TXEN ((uint)0x00020000) -#define PB3_COL ((uint)0x00040000) -#define PB3_CRS ((uint)0x00080000) -#ifndef CONFIG_RPX8260 -#define PB3_TXDAT ((uint)0x0f000000) -#define PC3_TXDAT ((uint)0x00000000) -#else -#define PB3_TXDAT ((uint)0x0f000000) -#define PC3_TXDAT 0 -#endif -#define PB3_RXDAT ((uint)0x00f00000) -#define PB3_PSORB_BOUT (PB3_RXDAT | PB3_TXDAT | PB3_CRS | PB3_COL | \ - PB3_RXER | PB3_RXDV | PB3_TXER | PB3_TXEN) -#define PB3_PSORB_BIN (0) -#define PB3_DIRB_BOUT (PB3_RXDAT | PB3_CRS | PB3_COL | PB3_RXER | PB3_RXDV) -#define PB3_DIRB_BIN (PB3_TXDAT | PB3_TXEN | PB3_TXER) - -#define PC3_PSORC_BOUT (PC3_TXDAT) -#define PC3_PSORC_BIN (0) -#define PC3_DIRC_BOUT (0) -#define PC3_DIRC_BIN (PC3_TXDAT) - - -/* MII status/control serial interface. -*/ -#if defined(CONFIG_RPX8260) -/* The EP8260 doesn't use Port C for MDIO */ -#define PC_MDIO ((uint)0x00000000) -#define PC_MDCK ((uint)0x00000000) -#elif defined(CONFIG_TQM8260) -/* TQM8260 has MDIO and MDCK on PC30 and PC31 respectively */ -#define PC_MDIO ((uint)0x00000002) -#define PC_MDCK ((uint)0x00000001) -#elif defined(CONFIG_EST8260) || defined(CONFIG_ADS8260) -#define PC_MDIO ((uint)0x00400000) -#define PC_MDCK ((uint)0x00200000) -#else -#define PC_MDIO ((uint)0x00000004) -#define PC_MDCK ((uint)0x00000020) -#endif - -#if defined(CONFIG_USE_MDIO) && (!defined(PC_MDIO) || !defined(PC_MDCK)) -#error "Must define PC_MDIO and PC_MDCK if using MDIO" -#endif - -/* PHY addresses */ -/* default to dynamic config of phy addresses */ -#define FCC1_PHY_ADDR 0 -#ifdef CONFIG_PQ2FADS -#define FCC2_PHY_ADDR 0 -#else -#define FCC2_PHY_ADDR 2 -#endif -#define FCC3_PHY_ADDR 3 - -/* A table of information for supporting FCCs. This does two things. - * First, we know how many FCCs we have and they are always externally - * numbered from zero. Second, it holds control register and I/O - * information that could be different among board designs. - */ -typedef struct fcc_info { - uint fc_fccnum; - uint fc_phyaddr; - uint fc_cpmblock; - uint fc_cpmpage; - uint fc_proff; - uint fc_interrupt; - uint fc_trxclocks; - uint fc_clockroute; - uint fc_clockmask; - uint fc_mdio; - uint fc_mdck; -} fcc_info_t; - -static fcc_info_t fcc_ports[] = { -#ifdef CONFIG_FCC1_ENET - { 0, FCC1_PHY_ADDR, CPM_CR_FCC1_SBLOCK, CPM_CR_FCC1_PAGE, PROFF_FCC1, SIU_INT_FCC1, - (PC_F1RXCLK | PC_F1TXCLK), CMX1_CLK_ROUTE, CMX1_CLK_MASK, - PC_MDIO, PC_MDCK }, -#endif -#ifdef CONFIG_FCC2_ENET - { 1, FCC2_PHY_ADDR, CPM_CR_FCC2_SBLOCK, CPM_CR_FCC2_PAGE, PROFF_FCC2, SIU_INT_FCC2, - (PC_F2RXCLK | PC_F2TXCLK), CMX2_CLK_ROUTE, CMX2_CLK_MASK, - PC_MDIO, PC_MDCK }, -#endif -#ifdef CONFIG_FCC3_ENET - { 2, FCC3_PHY_ADDR, CPM_CR_FCC3_SBLOCK, CPM_CR_FCC3_PAGE, PROFF_FCC3, SIU_INT_FCC3, - (PC_F3RXCLK | PC_F3TXCLK), CMX3_CLK_ROUTE, CMX3_CLK_MASK, - PC_MDIO, PC_MDCK }, -#endif -}; - -/* The FCC buffer descriptors track the ring buffers. The rx_bd_base and - * tx_bd_base always point to the base of the buffer descriptors. The - * cur_rx and cur_tx point to the currently available buffer. - * The dirty_tx tracks the current buffer that is being sent by the - * controller. The cur_tx and dirty_tx are equal under both completely - * empty and completely full conditions. The empty/ready indicator in - * the buffer descriptor determines the actual condition. - */ -struct fcc_enet_private { - /* The saved address of a sent-in-place packet/buffer, for skfree(). */ - struct sk_buff* tx_skbuff[TX_RING_SIZE]; - ushort skb_cur; - ushort skb_dirty; - - /* CPM dual port RAM relative addresses. - */ - cbd_t *rx_bd_base; /* Address of Rx and Tx buffers. */ - cbd_t *tx_bd_base; - cbd_t *cur_rx, *cur_tx; /* The next free ring entry */ - cbd_t *dirty_tx; /* The ring entries to be free()ed. */ - volatile fcc_t *fccp; - volatile fcc_enet_t *ep; - struct net_device_stats stats; - uint tx_free; - spinlock_t lock; - -#ifdef CONFIG_USE_MDIO - uint phy_id; - uint phy_id_done; - uint phy_status; - phy_info_t *phy; - struct work_struct phy_relink; - struct work_struct phy_display_config; - struct net_device *dev; - - uint sequence_done; - - uint phy_addr; -#endif /* CONFIG_USE_MDIO */ - - int link; - int old_link; - int full_duplex; - - fcc_info_t *fip; -}; - -static void init_fcc_shutdown(fcc_info_t *fip, struct fcc_enet_private *cep, - volatile cpm2_map_t *immap); -static void init_fcc_startup(fcc_info_t *fip, struct net_device *dev); -static void init_fcc_ioports(fcc_info_t *fip, volatile iop_cpm2_t *io, - volatile cpm2_map_t *immap); -static void init_fcc_param(fcc_info_t *fip, struct net_device *dev, - volatile cpm2_map_t *immap); - -#ifdef CONFIG_USE_MDIO -static int mii_queue(struct net_device *dev, int request, void (*func)(uint, struct net_device *)); -static uint mii_send_receive(fcc_info_t *fip, uint cmd); -static void mii_do_cmd(struct net_device *dev, const phy_cmd_t *c); - -/* Make MII read/write commands for the FCC. -*/ -#define mk_mii_read(REG) (0x60020000 | (((REG) & 0x1f) << 18)) -#define mk_mii_write(REG, VAL) (0x50020000 | (((REG) & 0x1f) << 18) | \ - ((VAL) & 0xffff)) -#define mk_mii_end 0 -#endif /* CONFIG_USE_MDIO */ - - -static int -fcc_enet_start_xmit(struct sk_buff *skb, struct net_device *dev) -{ - struct fcc_enet_private *cep = (struct fcc_enet_private *)dev->priv; - volatile cbd_t *bdp; - - /* Fill in a Tx ring entry */ - bdp = cep->cur_tx; - -#ifndef final_version - if (!cep->tx_free || (bdp->cbd_sc & BD_ENET_TX_READY)) { - /* Ooops. All transmit buffers are full. Bail out. - * This should not happen, since the tx queue should be stopped. - */ - printk("%s: tx queue full!.\n", dev->name); - return 1; - } -#endif - - /* Clear all of the status flags. */ - bdp->cbd_sc &= ~BD_ENET_TX_STATS; - - /* If the frame is short, tell CPM to pad it. */ - if (skb->len <= ETH_ZLEN) - bdp->cbd_sc |= BD_ENET_TX_PAD; - else - bdp->cbd_sc &= ~BD_ENET_TX_PAD; - - /* Set buffer length and buffer pointer. */ - bdp->cbd_datlen = skb->len; - bdp->cbd_bufaddr = __pa(skb->data); - - spin_lock_irq(&cep->lock); - - /* Save skb pointer. */ - cep->tx_skbuff[cep->skb_cur] = skb; - - cep->stats.tx_bytes += skb->len; - cep->skb_cur = (cep->skb_cur+1) & TX_RING_MOD_MASK; - - /* Send it on its way. Tell CPM its ready, interrupt when done, - * its the last BD of the frame, and to put the CRC on the end. - */ - bdp->cbd_sc |= (BD_ENET_TX_READY | BD_ENET_TX_INTR | BD_ENET_TX_LAST | BD_ENET_TX_TC); - -#if 0 - /* Errata says don't do this. */ - cep->fccp->fcc_ftodr = 0x8000; -#endif - dev->trans_start = jiffies; - - /* If this was the last BD in the ring, start at the beginning again. */ - if (bdp->cbd_sc & BD_ENET_TX_WRAP) - bdp = cep->tx_bd_base; - else - bdp++; - - if (!--cep->tx_free) - netif_stop_queue(dev); - - cep->cur_tx = (cbd_t *)bdp; - - spin_unlock_irq(&cep->lock); - - return 0; -} - - -static void -fcc_enet_timeout(struct net_device *dev) -{ - struct fcc_enet_private *cep = (struct fcc_enet_private *)dev->priv; - - printk("%s: transmit timed out.\n", dev->name); - cep->stats.tx_errors++; -#ifndef final_version - { - int i; - cbd_t *bdp; - printk(" Ring data dump: cur_tx %p tx_free %d cur_rx %p.\n", - cep->cur_tx, cep->tx_free, - cep->cur_rx); - bdp = cep->tx_bd_base; - printk(" Tx @base %p :\n", bdp); - for (i = 0 ; i < TX_RING_SIZE; i++, bdp++) - printk("%04x %04x %08x\n", - bdp->cbd_sc, - bdp->cbd_datlen, - bdp->cbd_bufaddr); - bdp = cep->rx_bd_base; - printk(" Rx @base %p :\n", bdp); - for (i = 0 ; i < RX_RING_SIZE; i++, bdp++) - printk("%04x %04x %08x\n", - bdp->cbd_sc, - bdp->cbd_datlen, - bdp->cbd_bufaddr); - } -#endif - if (cep->tx_free) - netif_wake_queue(dev); -} - -/* The interrupt handler. */ -static irqreturn_t -fcc_enet_interrupt(int irq, void *dev_id) -{ - struct net_device *dev = dev_id; - volatile struct fcc_enet_private *cep; - volatile cbd_t *bdp; - ushort int_events; - int must_restart; - - cep = dev->priv; - - /* Get the interrupt events that caused us to be here. - */ - int_events = cep->fccp->fcc_fcce; - cep->fccp->fcc_fcce = (int_events & cep->fccp->fcc_fccm); - must_restart = 0; - -#ifdef PHY_INTERRUPT - /* We have to be careful here to make sure that we aren't - * interrupted by a PHY interrupt. - */ - disable_irq_nosync(PHY_INTERRUPT); -#endif - - /* Handle receive event in its own function. - */ - if (int_events & FCC_ENET_RXF) - fcc_enet_rx(dev_id); - - /* Check for a transmit error. The manual is a little unclear - * about this, so the debug code until I get it figured out. It - * appears that if TXE is set, then TXB is not set. However, - * if carrier sense is lost during frame transmission, the TXE - * bit is set, "and continues the buffer transmission normally." - * I don't know if "normally" implies TXB is set when the buffer - * descriptor is closed.....trial and error :-). - */ - - /* Transmit OK, or non-fatal error. Update the buffer descriptors. - */ - if (int_events & (FCC_ENET_TXE | FCC_ENET_TXB)) { - spin_lock(&cep->lock); - bdp = cep->dirty_tx; - while ((bdp->cbd_sc&BD_ENET_TX_READY)==0) { - if (cep->tx_free == TX_RING_SIZE) - break; - - if (bdp->cbd_sc & BD_ENET_TX_HB) /* No heartbeat */ - cep->stats.tx_heartbeat_errors++; - if (bdp->cbd_sc & BD_ENET_TX_LC) /* Late collision */ - cep->stats.tx_window_errors++; - if (bdp->cbd_sc & BD_ENET_TX_RL) /* Retrans limit */ - cep->stats.tx_aborted_errors++; - if (bdp->cbd_sc & BD_ENET_TX_UN) /* Underrun */ - cep->stats.tx_fifo_errors++; - if (bdp->cbd_sc & BD_ENET_TX_CSL) /* Carrier lost */ - cep->stats.tx_carrier_errors++; - - - /* No heartbeat or Lost carrier are not really bad errors. - * The others require a restart transmit command. - */ - if (bdp->cbd_sc & - (BD_ENET_TX_LC | BD_ENET_TX_RL | BD_ENET_TX_UN)) { - must_restart = 1; - cep->stats.tx_errors++; - } - - cep->stats.tx_packets++; - - /* Deferred means some collisions occurred during transmit, - * but we eventually sent the packet OK. - */ - if (bdp->cbd_sc & BD_ENET_TX_DEF) - cep->stats.collisions++; - - /* Free the sk buffer associated with this last transmit. */ - dev_kfree_skb_irq(cep->tx_skbuff[cep->skb_dirty]); - cep->tx_skbuff[cep->skb_dirty] = NULL; - cep->skb_dirty = (cep->skb_dirty + 1) & TX_RING_MOD_MASK; - - /* Update pointer to next buffer descriptor to be transmitted. */ - if (bdp->cbd_sc & BD_ENET_TX_WRAP) - bdp = cep->tx_bd_base; - else - bdp++; - - /* I don't know if we can be held off from processing these - * interrupts for more than one frame time. I really hope - * not. In such a case, we would now want to check the - * currently available BD (cur_tx) and determine if any - * buffers between the dirty_tx and cur_tx have also been - * sent. We would want to process anything in between that - * does not have BD_ENET_TX_READY set. - */ - - /* Since we have freed up a buffer, the ring is no longer - * full. - */ - if (!cep->tx_free++) { - if (netif_queue_stopped(dev)) { - netif_wake_queue(dev); - } - } - - cep->dirty_tx = (cbd_t *)bdp; - } - - if (must_restart) { - volatile cpm_cpm2_t *cp; - - /* Some transmit errors cause the transmitter to shut - * down. We now issue a restart transmit. Since the - * errors close the BD and update the pointers, the restart - * _should_ pick up without having to reset any of our - * pointers either. Also, To workaround 8260 device erratum - * CPM37, we must disable and then re-enable the transmitter - * following a Late Collision, Underrun, or Retry Limit error. - */ - cep->fccp->fcc_gfmr &= ~FCC_GFMR_ENT; - udelay(10); /* wait a few microseconds just on principle */ - cep->fccp->fcc_gfmr |= FCC_GFMR_ENT; - - cp = cpmp; - cp->cp_cpcr = - mk_cr_cmd(cep->fip->fc_cpmpage, cep->fip->fc_cpmblock, - 0x0c, CPM_CR_RESTART_TX) | CPM_CR_FLG; - while (cp->cp_cpcr & CPM_CR_FLG); - } - spin_unlock(&cep->lock); - } - - /* Check for receive busy, i.e. packets coming but no place to - * put them. - */ - if (int_events & FCC_ENET_BSY) { - cep->fccp->fcc_fcce = FCC_ENET_BSY; - cep->stats.rx_dropped++; - } - -#ifdef PHY_INTERRUPT - enable_irq(PHY_INTERRUPT); -#endif - return IRQ_HANDLED; -} - -/* During a receive, the cur_rx points to the current incoming buffer. - * When we update through the ring, if the next incoming buffer has - * not been given to the system, we just set the empty indicator, - * effectively tossing the packet. - */ -static int -fcc_enet_rx(struct net_device *dev) -{ - struct fcc_enet_private *cep; - volatile cbd_t *bdp; - struct sk_buff *skb; - ushort pkt_len; - - cep = dev->priv; - - /* First, grab all of the stats for the incoming packet. - * These get messed up if we get called due to a busy condition. - */ - bdp = cep->cur_rx; - -for (;;) { - if (bdp->cbd_sc & BD_ENET_RX_EMPTY) - break; - -#ifndef final_version - /* Since we have allocated space to hold a complete frame, both - * the first and last indicators should be set. - */ - if ((bdp->cbd_sc & (BD_ENET_RX_FIRST | BD_ENET_RX_LAST)) != - (BD_ENET_RX_FIRST | BD_ENET_RX_LAST)) - printk("CPM ENET: rcv is not first+last\n"); -#endif - - /* Frame too long or too short. */ - if (bdp->cbd_sc & (BD_ENET_RX_LG | BD_ENET_RX_SH)) - cep->stats.rx_length_errors++; - if (bdp->cbd_sc & BD_ENET_RX_NO) /* Frame alignment */ - cep->stats.rx_frame_errors++; - if (bdp->cbd_sc & BD_ENET_RX_CR) /* CRC Error */ - cep->stats.rx_crc_errors++; - if (bdp->cbd_sc & BD_ENET_RX_OV) /* FIFO overrun */ - cep->stats.rx_crc_errors++; - if (bdp->cbd_sc & BD_ENET_RX_CL) /* Late Collision */ - cep->stats.rx_frame_errors++; - - if (!(bdp->cbd_sc & - (BD_ENET_RX_LG | BD_ENET_RX_SH | BD_ENET_RX_NO | BD_ENET_RX_CR - | BD_ENET_RX_OV | BD_ENET_RX_CL))) - { - /* Process the incoming frame. */ - cep->stats.rx_packets++; - - /* Remove the FCS from the packet length. */ - pkt_len = bdp->cbd_datlen - 4; - cep->stats.rx_bytes += pkt_len; - - /* This does 16 byte alignment, much more than we need. */ - skb = dev_alloc_skb(pkt_len); - - if (skb == NULL) { - printk("%s: Memory squeeze, dropping packet.\n", dev->name); - cep->stats.rx_dropped++; - } - else { - skb_put(skb,pkt_len); /* Make room */ - skb_copy_to_linear_data(skb, - (unsigned char *)__va(bdp->cbd_bufaddr), - pkt_len); - skb->protocol=eth_type_trans(skb,dev); - netif_rx(skb); - } - } - - /* Clear the status flags for this buffer. */ - bdp->cbd_sc &= ~BD_ENET_RX_STATS; - - /* Mark the buffer empty. */ - bdp->cbd_sc |= BD_ENET_RX_EMPTY; - - /* Update BD pointer to next entry. */ - if (bdp->cbd_sc & BD_ENET_RX_WRAP) - bdp = cep->rx_bd_base; - else - bdp++; - - } - cep->cur_rx = (cbd_t *)bdp; - - return 0; -} - -static int -fcc_enet_close(struct net_device *dev) -{ -#ifdef CONFIG_USE_MDIO - struct fcc_enet_private *fep = dev->priv; -#endif - - netif_stop_queue(dev); - fcc_stop(dev); -#ifdef CONFIG_USE_MDIO - if (fep->phy) - mii_do_cmd(dev, fep->phy->shutdown); -#endif - - return 0; -} - -static struct net_device_stats *fcc_enet_get_stats(struct net_device *dev) -{ - struct fcc_enet_private *cep = (struct fcc_enet_private *)dev->priv; - - return &cep->stats; -} - -#ifdef CONFIG_USE_MDIO - -/* NOTE: Most of the following comes from the FEC driver for 860. The - * overall structure of MII code has been retained (as it's proved stable - * and well-tested), but actual transfer requests are processed "at once" - * instead of being queued (there's no interrupt-driven MII transfer - * mechanism, one has to toggle the data/clock bits manually). - */ -static int -mii_queue(struct net_device *dev, int regval, void (*func)(uint, struct net_device *)) -{ - struct fcc_enet_private *fep; - int retval, tmp; - - /* Add PHY address to register command. */ - fep = dev->priv; - regval |= fep->phy_addr << 23; - - retval = 0; - - tmp = mii_send_receive(fep->fip, regval); - if (func) - func(tmp, dev); - - return retval; -} - -static void mii_do_cmd(struct net_device *dev, const phy_cmd_t *c) -{ - int k; - - if(!c) - return; - - for(k = 0; (c+k)->mii_data != mk_mii_end; k++) - mii_queue(dev, (c+k)->mii_data, (c+k)->funct); -} - -static void mii_parse_sr(uint mii_reg, struct net_device *dev) -{ - volatile struct fcc_enet_private *fep = dev->priv; - uint s = fep->phy_status; - - s &= ~(PHY_STAT_LINK | PHY_STAT_FAULT | PHY_STAT_ANC); - - if (mii_reg & BMSR_LSTATUS) - s |= PHY_STAT_LINK; - if (mii_reg & BMSR_RFAULT) - s |= PHY_STAT_FAULT; - if (mii_reg & BMSR_ANEGCOMPLETE) - s |= PHY_STAT_ANC; - - fep->phy_status = s; -} - -static void mii_parse_cr(uint mii_reg, struct net_device *dev) -{ - volatile struct fcc_enet_private *fep = dev->priv; - uint s = fep->phy_status; - - s &= ~(PHY_CONF_ANE | PHY_CONF_LOOP); - - if (mii_reg & BMCR_ANENABLE) - s |= PHY_CONF_ANE; - if (mii_reg & BMCR_LOOPBACK) - s |= PHY_CONF_LOOP; - - fep->phy_status = s; -} - -static void mii_parse_anar(uint mii_reg, struct net_device *dev) -{ - volatile struct fcc_enet_private *fep = dev->priv; - uint s = fep->phy_status; - - s &= ~(PHY_CONF_SPMASK); - - if (mii_reg & ADVERTISE_10HALF) - s |= PHY_CONF_10HDX; - if (mii_reg & ADVERTISE_10FULL) - s |= PHY_CONF_10FDX; - if (mii_reg & ADVERTISE_100HALF) - s |= PHY_CONF_100HDX; - if (mii_reg & ADVERTISE_100FULL) - s |= PHY_CONF_100FDX; - - fep->phy_status = s; -} - -/* ------------------------------------------------------------------------- */ -/* Generic PHY support. Should work for all PHYs, but does not support link - * change interrupts. - */ -#ifdef CONFIG_FCC_GENERIC_PHY - -static phy_info_t phy_info_generic = { - 0x00000000, /* 0-->match any PHY */ - "GENERIC", - - (const phy_cmd_t []) { /* config */ - /* advertise only half-duplex capabilities */ - { mk_mii_write(MII_ADVERTISE, MII_ADVERTISE_HALF), - mii_parse_anar }, - - /* enable auto-negotiation */ - { mk_mii_write(MII_BMCR, BMCR_ANENABLE), mii_parse_cr }, - { mk_mii_end, } - }, - (const phy_cmd_t []) { /* startup */ - /* restart auto-negotiation */ - { mk_mii_write(MII_BMCR, BMCR_ANENABLE | BMCR_ANRESTART), - NULL }, - { mk_mii_end, } - }, - (const phy_cmd_t []) { /* ack_int */ - /* We don't actually use the ack_int table with a generic - * PHY, but putting a reference to mii_parse_sr here keeps - * us from getting a compiler warning about unused static - * functions in the case where we only compile in generic - * PHY support. - */ - { mk_mii_read(MII_BMSR), mii_parse_sr }, - { mk_mii_end, } - }, - (const phy_cmd_t []) { /* shutdown */ - { mk_mii_end, } - }, -}; -#endif /* ifdef CONFIG_FCC_GENERIC_PHY */ - -/* ------------------------------------------------------------------------- */ -/* The Level one LXT970 is used by many boards */ - -#ifdef CONFIG_FCC_LXT970 - -#define MII_LXT970_MIRROR 16 /* Mirror register */ -#define MII_LXT970_IER 17 /* Interrupt Enable Register */ -#define MII_LXT970_ISR 18 /* Interrupt Status Register */ -#define MII_LXT970_CONFIG 19 /* Configuration Register */ -#define MII_LXT970_CSR 20 /* Chip Status Register */ - -static void mii_parse_lxt970_csr(uint mii_reg, struct net_device *dev) -{ - volatile struct fcc_enet_private *fep = dev->priv; - uint s = fep->phy_status; - - s &= ~(PHY_STAT_SPMASK); - - if (mii_reg & 0x0800) { - if (mii_reg & 0x1000) - s |= PHY_STAT_100FDX; - else - s |= PHY_STAT_100HDX; - } else { - if (mii_reg & 0x1000) - s |= PHY_STAT_10FDX; - else - s |= PHY_STAT_10HDX; - } - - fep->phy_status = s; -} - -static phy_info_t phy_info_lxt970 = { - 0x07810000, - "LXT970", - - (const phy_cmd_t []) { /* config */ -#if 0 -// { mk_mii_write(MII_ADVERTISE, 0x0021), NULL }, - - /* Set default operation of 100-TX....for some reason - * some of these bits are set on power up, which is wrong. - */ - { mk_mii_write(MII_LXT970_CONFIG, 0), NULL }, -#endif - { mk_mii_read(MII_BMCR), mii_parse_cr }, - { mk_mii_read(MII_ADVERTISE), mii_parse_anar }, - { mk_mii_end, } - }, - (const phy_cmd_t []) { /* startup - enable interrupts */ - { mk_mii_write(MII_LXT970_IER, 0x0002), NULL }, - { mk_mii_write(MII_BMCR, 0x1200), NULL }, /* autonegotiate */ - { mk_mii_end, } - }, - (const phy_cmd_t []) { /* ack_int */ - /* read SR and ISR to acknowledge */ - - { mk_mii_read(MII_BMSR), mii_parse_sr }, - { mk_mii_read(MII_LXT970_ISR), NULL }, - - /* find out the current status */ - - { mk_mii_read(MII_LXT970_CSR), mii_parse_lxt970_csr }, - { mk_mii_end, } - }, - (const phy_cmd_t []) { /* shutdown - disable interrupts */ - { mk_mii_write(MII_LXT970_IER, 0x0000), NULL }, - { mk_mii_end, } - }, -}; - -#endif /* CONFIG_FEC_LXT970 */ - -/* ------------------------------------------------------------------------- */ -/* The Level one LXT971 is used on some of my custom boards */ - -#ifdef CONFIG_FCC_LXT971 - -/* register definitions for the 971 */ - -#define MII_LXT971_PCR 16 /* Port Control Register */ -#define MII_LXT971_SR2 17 /* Status Register 2 */ -#define MII_LXT971_IER 18 /* Interrupt Enable Register */ -#define MII_LXT971_ISR 19 /* Interrupt Status Register */ -#define MII_LXT971_LCR 20 /* LED Control Register */ -#define MII_LXT971_TCR 30 /* Transmit Control Register */ - -/* - * I had some nice ideas of running the MDIO faster... - * The 971 should support 8MHz and I tried it, but things acted really - * weird, so 2.5 MHz ought to be enough for anyone... - */ - -static void mii_parse_lxt971_sr2(uint mii_reg, struct net_device *dev) -{ - volatile struct fcc_enet_private *fep = dev->priv; - uint s = fep->phy_status; - - s &= ~(PHY_STAT_SPMASK); - - if (mii_reg & 0x4000) { - if (mii_reg & 0x0200) - s |= PHY_STAT_100FDX; - else - s |= PHY_STAT_100HDX; - } else { - if (mii_reg & 0x0200) - s |= PHY_STAT_10FDX; - else - s |= PHY_STAT_10HDX; - } - if (mii_reg & 0x0008) - s |= PHY_STAT_FAULT; - - fep->phy_status = s; -} - -static phy_info_t phy_info_lxt971 = { - 0x0001378e, - "LXT971", - - (const phy_cmd_t []) { /* config */ - /* configure link capabilities to advertise */ - { mk_mii_write(MII_ADVERTISE, MII_ADVERTISE_DEFAULT), - mii_parse_anar }, - - /* enable auto-negotiation */ - { mk_mii_write(MII_BMCR, BMCR_ANENABLE), mii_parse_cr }, - { mk_mii_end, } - }, - (const phy_cmd_t []) { /* startup - enable interrupts */ - { mk_mii_write(MII_LXT971_IER, 0x00f2), NULL }, - - /* restart auto-negotiation */ - { mk_mii_write(MII_BMCR, BMCR_ANENABLE | BMCR_ANRESTART), - NULL }, - { mk_mii_end, } - }, - (const phy_cmd_t []) { /* ack_int */ - /* find out the current status */ - { mk_mii_read(MII_BMSR), NULL }, - { mk_mii_read(MII_BMSR), mii_parse_sr }, - { mk_mii_read(MII_LXT971_SR2), mii_parse_lxt971_sr2 }, - - /* we only need to read ISR to acknowledge */ - { mk_mii_read(MII_LXT971_ISR), NULL }, - { mk_mii_end, } - }, - (const phy_cmd_t []) { /* shutdown - disable interrupts */ - { mk_mii_write(MII_LXT971_IER, 0x0000), NULL }, - { mk_mii_end, } - }, -}; - -#endif /* CONFIG_FCC_LXT971 */ - -/* ------------------------------------------------------------------------- */ -/* The Quality Semiconductor QS6612 is used on the RPX CLLF */ - -#ifdef CONFIG_FCC_QS6612 - -/* register definitions */ - -#define MII_QS6612_MCR 17 /* Mode Control Register */ -#define MII_QS6612_FTR 27 /* Factory Test Register */ -#define MII_QS6612_MCO 28 /* Misc. Control Register */ -#define MII_QS6612_ISR 29 /* Interrupt Source Register */ -#define MII_QS6612_IMR 30 /* Interrupt Mask Register */ -#define MII_QS6612_PCR 31 /* 100BaseTx PHY Control Reg. */ - -static void mii_parse_qs6612_pcr(uint mii_reg, struct net_device *dev) -{ - volatile struct fcc_enet_private *fep = dev->priv; - uint s = fep->phy_status; - - s &= ~(PHY_STAT_SPMASK); - - switch((mii_reg >> 2) & 7) { - case 1: s |= PHY_STAT_10HDX; break; - case 2: s |= PHY_STAT_100HDX; break; - case 5: s |= PHY_STAT_10FDX; break; - case 6: s |= PHY_STAT_100FDX; break; - } - - fep->phy_status = s; -} - -static phy_info_t phy_info_qs6612 = { - 0x00181440, - "QS6612", - - (const phy_cmd_t []) { /* config */ -// { mk_mii_write(MII_ADVERTISE, 0x061), NULL }, /* 10 Mbps */ - - /* The PHY powers up isolated on the RPX, - * so send a command to allow operation. - */ - - { mk_mii_write(MII_QS6612_PCR, 0x0dc0), NULL }, - - /* parse cr and anar to get some info */ - - { mk_mii_read(MII_BMCR), mii_parse_cr }, - { mk_mii_read(MII_ADVERTISE), mii_parse_anar }, - { mk_mii_end, } - }, - (const phy_cmd_t []) { /* startup - enable interrupts */ - { mk_mii_write(MII_QS6612_IMR, 0x003a), NULL }, - { mk_mii_write(MII_BMCR, 0x1200), NULL }, /* autonegotiate */ - { mk_mii_end, } - }, - (const phy_cmd_t []) { /* ack_int */ - - /* we need to read ISR, SR and ANER to acknowledge */ - - { mk_mii_read(MII_QS6612_ISR), NULL }, - { mk_mii_read(MII_BMSR), mii_parse_sr }, - { mk_mii_read(MII_EXPANSION), NULL }, - - /* read pcr to get info */ - - { mk_mii_read(MII_QS6612_PCR), mii_parse_qs6612_pcr }, - { mk_mii_end, } - }, - (const phy_cmd_t []) { /* shutdown - disable interrupts */ - { mk_mii_write(MII_QS6612_IMR, 0x0000), NULL }, - { mk_mii_end, } - }, -}; - - -#endif /* CONFIG_FEC_QS6612 */ - - -/* ------------------------------------------------------------------------- */ -/* The Davicom DM9131 is used on the HYMOD board */ - -#ifdef CONFIG_FCC_DM9131 - -/* register definitions */ - -#define MII_DM9131_ACR 16 /* Aux. Config Register */ -#define MII_DM9131_ACSR 17 /* Aux. Config/Status Register */ -#define MII_DM9131_10TCSR 18 /* 10BaseT Config/Status Reg. */ -#define MII_DM9131_INTR 21 /* Interrupt Register */ -#define MII_DM9131_RECR 22 /* Receive Error Counter Reg. */ -#define MII_DM9131_DISCR 23 /* Disconnect Counter Register */ - -static void mii_parse_dm9131_acsr(uint mii_reg, struct net_device *dev) -{ - volatile struct fcc_enet_private *fep = dev->priv; - uint s = fep->phy_status; - - s &= ~(PHY_STAT_SPMASK); - - switch ((mii_reg >> 12) & 0xf) { - case 1: s |= PHY_STAT_10HDX; break; - case 2: s |= PHY_STAT_10FDX; break; - case 4: s |= PHY_STAT_100HDX; break; - case 8: s |= PHY_STAT_100FDX; break; - } - - fep->phy_status = s; -} - -static phy_info_t phy_info_dm9131 = { - 0x00181b80, - "DM9131", - - (const phy_cmd_t []) { /* config */ - /* parse cr and anar to get some info */ - { mk_mii_read(MII_BMCR), mii_parse_cr }, - { mk_mii_read(MII_ADVERTISE), mii_parse_anar }, - { mk_mii_end, } - }, - (const phy_cmd_t []) { /* startup - enable interrupts */ - { mk_mii_write(MII_DM9131_INTR, 0x0002), NULL }, - { mk_mii_write(MII_BMCR, 0x1200), NULL }, /* autonegotiate */ - { mk_mii_end, } - }, - (const phy_cmd_t []) { /* ack_int */ - - /* we need to read INTR, SR and ANER to acknowledge */ - - { mk_mii_read(MII_DM9131_INTR), NULL }, - { mk_mii_read(MII_BMSR), mii_parse_sr }, - { mk_mii_read(MII_EXPANSION), NULL }, - - /* read acsr to get info */ - - { mk_mii_read(MII_DM9131_ACSR), mii_parse_dm9131_acsr }, - { mk_mii_end, } - }, - (const phy_cmd_t []) { /* shutdown - disable interrupts */ - { mk_mii_write(MII_DM9131_INTR, 0x0f00), NULL }, - { mk_mii_end, } - }, -}; - - -#endif /* CONFIG_FEC_DM9131 */ -#ifdef CONFIG_FCC_DM9161 -/* ------------------------------------------------------------------------- */ -/* DM9161 Control register values */ -#define MIIM_DM9161_CR_STOP 0x0400 -#define MIIM_DM9161_CR_RSTAN 0x1200 - -#define MIIM_DM9161_SCR 0x10 -#define MIIM_DM9161_SCR_INIT 0x0610 - -/* DM9161 Specified Configuration and Status Register */ -#define MIIM_DM9161_SCSR 0x11 -#define MIIM_DM9161_SCSR_100F 0x8000 -#define MIIM_DM9161_SCSR_100H 0x4000 -#define MIIM_DM9161_SCSR_10F 0x2000 -#define MIIM_DM9161_SCSR_10H 0x1000 -/* DM9161 10BT register */ -#define MIIM_DM9161_10BTCSR 0x12 -#define MIIM_DM9161_10BTCSR_INIT 0x7800 -/* DM9161 Interrupt Register */ -#define MIIM_DM9161_INTR 0x15 -#define MIIM_DM9161_INTR_PEND 0x8000 -#define MIIM_DM9161_INTR_DPLX_MASK 0x0800 -#define MIIM_DM9161_INTR_SPD_MASK 0x0400 -#define MIIM_DM9161_INTR_LINK_MASK 0x0200 -#define MIIM_DM9161_INTR_MASK 0x0100 -#define MIIM_DM9161_INTR_DPLX_CHANGE 0x0010 -#define MIIM_DM9161_INTR_SPD_CHANGE 0x0008 -#define MIIM_DM9161_INTR_LINK_CHANGE 0x0004 -#define MIIM_DM9161_INTR_INIT 0x0000 -#define MIIM_DM9161_INTR_STOP \ -(MIIM_DM9161_INTR_DPLX_MASK | MIIM_DM9161_INTR_SPD_MASK \ - | MIIM_DM9161_INTR_LINK_MASK | MIIM_DM9161_INTR_MASK) - -static void mii_parse_dm9161_sr(uint mii_reg, struct net_device * dev) -{ - volatile struct fcc_enet_private *fep = dev->priv; - uint regstat, timeout=0xffff; - - while(!(mii_reg & 0x0020) && timeout--) - { - regstat=mk_mii_read(MII_BMSR); - regstat |= fep->phy_addr <<23; - mii_reg = mii_send_receive(fep->fip,regstat); - } - - mii_parse_sr(mii_reg, dev); -} - -static void mii_parse_dm9161_scsr(uint mii_reg, struct net_device * dev) -{ - volatile struct fcc_enet_private *fep = dev->priv; - uint s = fep->phy_status; - - s &= ~(PHY_STAT_SPMASK); - switch((mii_reg >>12) & 0xf) { - case 1: - { - s |= PHY_STAT_10HDX; - printk("10BaseT Half Duplex\n"); - break; - } - case 2: - { - s |= PHY_STAT_10FDX; - printk("10BaseT Full Duplex\n"); - break; - } - case 4: - { - s |= PHY_STAT_100HDX; - printk("100BaseT Half Duplex\n"); - break; - } - case 8: - { - s |= PHY_STAT_100FDX; - printk("100BaseT Full Duplex\n"); - break; - } - } - - fep->phy_status = s; - -} - -static void mii_dm9161_wait(uint mii_reg, struct net_device *dev) -{ - int timeout = HZ; - - /* Davicom takes a bit to come up after a reset, - * so wait here for a bit */ - schedule_timeout_uninterruptible(timeout); -} - -static phy_info_t phy_info_dm9161 = { - 0x00181b88, - "Davicom DM9161E", - (const phy_cmd_t[]) { /* config */ - { mk_mii_write(MII_BMCR, MIIM_DM9161_CR_STOP), NULL}, - /* Do not bypass the scrambler/descrambler */ - { mk_mii_write(MIIM_DM9161_SCR, MIIM_DM9161_SCR_INIT), NULL}, - /* Configure 10BTCSR register */ - { mk_mii_write(MIIM_DM9161_10BTCSR, MIIM_DM9161_10BTCSR_INIT),NULL}, - /* Configure some basic stuff */ - { mk_mii_write(MII_BMCR, 0x1000), NULL}, - { mk_mii_read(MII_BMCR), mii_parse_cr }, - { mk_mii_read(MII_ADVERTISE), mii_parse_anar }, - { mk_mii_end,} - }, - (const phy_cmd_t[]) { /* startup */ - /* Restart Auto Negotiation */ - { mk_mii_write(MII_BMCR, MIIM_DM9161_CR_RSTAN), NULL}, - /* Status is read once to clear old link state */ - { mk_mii_read(MII_BMSR), mii_dm9161_wait}, - /* Auto-negotiate */ - { mk_mii_read(MII_BMSR), mii_parse_dm9161_sr}, - /* Read the status */ - { mk_mii_read(MIIM_DM9161_SCSR), mii_parse_dm9161_scsr}, - /* Clear any pending interrupts */ - { mk_mii_read(MIIM_DM9161_INTR), NULL}, - /* Enable Interrupts */ - { mk_mii_write(MIIM_DM9161_INTR, MIIM_DM9161_INTR_INIT), NULL}, - { mk_mii_end,} - }, - (const phy_cmd_t[]) { /* ack_int */ - { mk_mii_read(MIIM_DM9161_INTR), NULL}, -#if 0 - { mk_mii_read(MII_BMSR), NULL}, - { mk_mii_read(MII_BMSR), mii_parse_dm9161_sr}, - { mk_mii_read(MIIM_DM9161_SCSR), mii_parse_dm9161_scsr}, -#endif - { mk_mii_end,} - }, - (const phy_cmd_t[]) { /* shutdown */ - { mk_mii_read(MIIM_DM9161_INTR),NULL}, - { mk_mii_write(MIIM_DM9161_INTR, MIIM_DM9161_INTR_STOP), NULL}, - { mk_mii_end,} - }, -}; -#endif /* CONFIG_FCC_DM9161 */ - -static phy_info_t *phy_info[] = { - -#ifdef CONFIG_FCC_LXT970 - &phy_info_lxt970, -#endif /* CONFIG_FEC_LXT970 */ - -#ifdef CONFIG_FCC_LXT971 - &phy_info_lxt971, -#endif /* CONFIG_FEC_LXT971 */ - -#ifdef CONFIG_FCC_QS6612 - &phy_info_qs6612, -#endif /* CONFIG_FEC_QS6612 */ - -#ifdef CONFIG_FCC_DM9131 - &phy_info_dm9131, -#endif /* CONFIG_FEC_DM9131 */ - -#ifdef CONFIG_FCC_DM9161 - &phy_info_dm9161, -#endif /* CONFIG_FCC_DM9161 */ - -#ifdef CONFIG_FCC_GENERIC_PHY - /* Generic PHY support. This must be the last PHY in the table. - * It will be used to support any PHY that doesn't match a previous - * entry in the table. - */ - &phy_info_generic, -#endif /* CONFIG_FCC_GENERIC_PHY */ - - NULL -}; - -static void mii_display_status(struct work_struct *work) -{ - volatile struct fcc_enet_private *fep = - container_of(work, struct fcc_enet_private, phy_relink); - struct net_device *dev = fep->dev; - uint s = fep->phy_status; - - if (!fep->link && !fep->old_link) { - /* Link is still down - don't print anything */ - return; - } - - printk("%s: status: ", dev->name); - - if (!fep->link) { - printk("link down"); - } else { - printk("link up"); - - switch(s & PHY_STAT_SPMASK) { - case PHY_STAT_100FDX: printk(", 100 Mbps Full Duplex"); break; - case PHY_STAT_100HDX: printk(", 100 Mbps Half Duplex"); break; - case PHY_STAT_10FDX: printk(", 10 Mbps Full Duplex"); break; - case PHY_STAT_10HDX: printk(", 10 Mbps Half Duplex"); break; - default: - printk(", Unknown speed/duplex"); - } - - if (s & PHY_STAT_ANC) - printk(", auto-negotiation complete"); - } - - if (s & PHY_STAT_FAULT) - printk(", remote fault"); - - printk(".\n"); -} - -static void mii_display_config(struct work_struct *work) -{ - volatile struct fcc_enet_private *fep = - container_of(work, struct fcc_enet_private, - phy_display_config); - struct net_device *dev = fep->dev; - uint s = fep->phy_status; - - printk("%s: config: auto-negotiation ", dev->name); - - if (s & PHY_CONF_ANE) - printk("on"); - else - printk("off"); - - if (s & PHY_CONF_100FDX) - printk(", 100FDX"); - if (s & PHY_CONF_100HDX) - printk(", 100HDX"); - if (s & PHY_CONF_10FDX) - printk(", 10FDX"); - if (s & PHY_CONF_10HDX) - printk(", 10HDX"); - if (!(s & PHY_CONF_SPMASK)) - printk(", No speed/duplex selected?"); - - if (s & PHY_CONF_LOOP) - printk(", loopback enabled"); - - printk(".\n"); - - fep->sequence_done = 1; -} - -static void mii_relink(struct net_device *dev) -{ - struct fcc_enet_private *fep = dev->priv; - int duplex = 0; - - fep->old_link = fep->link; - fep->link = (fep->phy_status & PHY_STAT_LINK) ? 1 : 0; - -#ifdef MDIO_DEBUG - printk(" mii_relink: link=%d\n", fep->link); -#endif - - if (fep->link) { - if (fep->phy_status - & (PHY_STAT_100FDX | PHY_STAT_10FDX)) - duplex = 1; - fcc_restart(dev, duplex); -#ifdef MDIO_DEBUG - printk(" mii_relink: duplex=%d\n", duplex); -#endif - } -} - -static void mii_queue_relink(uint mii_reg, struct net_device *dev) -{ - struct fcc_enet_private *fep = dev->priv; - - mii_relink(dev); - - schedule_work(&fep->phy_relink); -} - -static void mii_queue_config(uint mii_reg, struct net_device *dev) -{ - struct fcc_enet_private *fep = dev->priv; - - schedule_work(&fep->phy_display_config); -} - -phy_cmd_t phy_cmd_relink[] = { { mk_mii_read(MII_BMCR), mii_queue_relink }, - { mk_mii_end, } }; -phy_cmd_t phy_cmd_config[] = { { mk_mii_read(MII_BMCR), mii_queue_config }, - { mk_mii_end, } }; - - -/* Read remainder of PHY ID. -*/ -static void -mii_discover_phy3(uint mii_reg, struct net_device *dev) -{ - struct fcc_enet_private *fep; - int i; - - fep = dev->priv; - printk("mii_reg: %08x\n", mii_reg); - fep->phy_id |= (mii_reg & 0xffff); - - for(i = 0; phy_info[i]; i++) - if((phy_info[i]->id == (fep->phy_id >> 4)) || !phy_info[i]->id) - break; - - if(!phy_info[i]) - panic("%s: PHY id 0x%08x is not supported!\n", - dev->name, fep->phy_id); - - fep->phy = phy_info[i]; - fep->phy_id_done = 1; - - printk("%s: Phy @ 0x%x, type %s (0x%08x)\n", - dev->name, fep->phy_addr, fep->phy->name, fep->phy_id); -} - -/* Scan all of the MII PHY addresses looking for someone to respond - * with a valid ID. This usually happens quickly. - */ -static void -mii_discover_phy(uint mii_reg, struct net_device *dev) -{ - struct fcc_enet_private *fep; - uint phytype; - - fep = dev->priv; - - if ((phytype = (mii_reg & 0xffff)) != 0xffff) { - - /* Got first part of ID, now get remainder. */ - fep->phy_id = phytype << 16; - mii_queue(dev, mk_mii_read(MII_PHYSID2), mii_discover_phy3); - } else { - fep->phy_addr++; - if (fep->phy_addr < 32) { - mii_queue(dev, mk_mii_read(MII_PHYSID1), - mii_discover_phy); - } else { - printk("fec: No PHY device found.\n"); - } - } -} -#endif /* CONFIG_USE_MDIO */ - -#ifdef PHY_INTERRUPT -/* This interrupt occurs when the PHY detects a link change. */ -static irqreturn_t -mii_link_interrupt(int irq, void * dev_id) -{ - struct net_device *dev = dev_id; - struct fcc_enet_private *fep = dev->priv; - fcc_info_t *fip = fep->fip; - - if (fep->phy) { - /* We don't want to be interrupted by an FCC - * interrupt here. - */ - disable_irq_nosync(fip->fc_interrupt); - - mii_do_cmd(dev, fep->phy->ack_int); - /* restart and display status */ - mii_do_cmd(dev, phy_cmd_relink); - - enable_irq(fip->fc_interrupt); - } - return IRQ_HANDLED; -} -#endif /* ifdef PHY_INTERRUPT */ - -#if 0 /* This should be fixed someday */ -/* Set or clear the multicast filter for this adaptor. - * Skeleton taken from sunlance driver. - * The CPM Ethernet implementation allows Multicast as well as individual - * MAC address filtering. Some of the drivers check to make sure it is - * a group multicast address, and discard those that are not. I guess I - * will do the same for now, but just remove the test if you want - * individual filtering as well (do the upper net layers want or support - * this kind of feature?). - */ -static void -set_multicast_list(struct net_device *dev) -{ - struct fcc_enet_private *cep; - struct dev_mc_list *dmi; - u_char *mcptr, *tdptr; - volatile fcc_enet_t *ep; - int i, j; - - cep = (struct fcc_enet_private *)dev->priv; - -return; - /* Get pointer to FCC area in parameter RAM. - */ - ep = (fcc_enet_t *)dev->base_addr; - - if (dev->flags&IFF_PROMISC) { - - /* Log any net taps. */ - printk("%s: Promiscuous mode enabled.\n", dev->name); - cep->fccp->fcc_fpsmr |= FCC_PSMR_PRO; - } else { - - cep->fccp->fcc_fpsmr &= ~FCC_PSMR_PRO; - - if (dev->flags & IFF_ALLMULTI) { - /* Catch all multicast addresses, so set the - * filter to all 1's. - */ - ep->fen_gaddrh = 0xffffffff; - ep->fen_gaddrl = 0xffffffff; - } - else { - /* Clear filter and add the addresses in the list. - */ - ep->fen_gaddrh = 0; - ep->fen_gaddrl = 0; - - dmi = dev->mc_list; - - for (i=0; i<dev->mc_count; i++, dmi = dmi->next) { - - /* Only support group multicast for now. - */ - if (!(dmi->dmi_addr[0] & 1)) - continue; - - /* The address in dmi_addr is LSB first, - * and taddr is MSB first. We have to - * copy bytes MSB first from dmi_addr. - */ - mcptr = (u_char *)dmi->dmi_addr + 5; - tdptr = (u_char *)&ep->fen_taddrh; - for (j=0; j<6; j++) - *tdptr++ = *mcptr--; - - /* Ask CPM to run CRC and set bit in - * filter mask. - */ - cpmp->cp_cpcr = mk_cr_cmd(cep->fip->fc_cpmpage, - cep->fip->fc_cpmblock, 0x0c, - CPM_CR_SET_GADDR) | CPM_CR_FLG; - udelay(10); - while (cpmp->cp_cpcr & CPM_CR_FLG); - } - } - } -} -#endif /* if 0 */ - - -/* Set the individual MAC address. - */ -int fcc_enet_set_mac_address(struct net_device *dev, void *p) -{ - struct sockaddr *addr= (struct sockaddr *) p; - struct fcc_enet_private *cep; - volatile fcc_enet_t *ep; - unsigned char *eap; - int i; - - cep = (struct fcc_enet_private *)(dev->priv); - ep = cep->ep; - - if (netif_running(dev)) - return -EBUSY; - - memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); - - eap = (unsigned char *) &(ep->fen_paddrh); - for (i=5; i>=0; i--) - *eap++ = addr->sa_data[i]; - - return 0; -} - - -/* Initialize the CPM Ethernet on FCC. - */ -static int __init fec_enet_init(void) -{ - struct net_device *dev; - struct fcc_enet_private *cep; - fcc_info_t *fip; - int i, np, err; - volatile cpm2_map_t *immap; - volatile iop_cpm2_t *io; - - immap = (cpm2_map_t *)CPM_MAP_ADDR; /* and to internal registers */ - io = &immap->im_ioport; - - np = sizeof(fcc_ports) / sizeof(fcc_info_t); - fip = fcc_ports; - - while (np-- > 0) { - /* Create an Ethernet device instance. - */ - dev = alloc_etherdev(sizeof(*cep)); - if (!dev) - return -ENOMEM; - - cep = dev->priv; - spin_lock_init(&cep->lock); - cep->fip = fip; - - init_fcc_shutdown(fip, cep, immap); - init_fcc_ioports(fip, io, immap); - init_fcc_param(fip, dev, immap); - - dev->base_addr = (unsigned long)(cep->ep); - - /* The CPM Ethernet specific entries in the device - * structure. - */ - dev->open = fcc_enet_open; - dev->hard_start_xmit = fcc_enet_start_xmit; - dev->tx_timeout = fcc_enet_timeout; - dev->watchdog_timeo = TX_TIMEOUT; - dev->stop = fcc_enet_close; - dev->get_stats = fcc_enet_get_stats; - /* dev->set_multicast_list = set_multicast_list; */ - dev->set_mac_address = fcc_enet_set_mac_address; - - init_fcc_startup(fip, dev); - - err = register_netdev(dev); - if (err) { - free_netdev(dev); - return err; - } - - printk("%s: FCC ENET Version 0.3, ", dev->name); - for (i=0; i<5; i++) - printk("%02x:", dev->dev_addr[i]); - printk("%02x\n", dev->dev_addr[5]); - -#ifdef CONFIG_USE_MDIO - /* Queue up command to detect the PHY and initialize the - * remainder of the interface. - */ - cep->phy_id_done = 0; - cep->phy_addr = fip->fc_phyaddr; - mii_queue(dev, mk_mii_read(MII_PHYSID1), mii_discover_phy); - INIT_WORK(&cep->phy_relink, mii_display_status); - INIT_WORK(&cep->phy_display_config, mii_display_config); - cep->dev = dev; -#endif /* CONFIG_USE_MDIO */ - - fip++; - } - - return 0; -} -module_init(fec_enet_init); - -/* Make sure the device is shut down during initialization. -*/ -static void __init -init_fcc_shutdown(fcc_info_t *fip, struct fcc_enet_private *cep, - volatile cpm2_map_t *immap) -{ - volatile fcc_enet_t *ep; - volatile fcc_t *fccp; - - /* Get pointer to FCC area in parameter RAM. - */ - ep = (fcc_enet_t *)(&immap->im_dprambase[fip->fc_proff]); - - /* And another to the FCC register area. - */ - fccp = (volatile fcc_t *)(&immap->im_fcc[fip->fc_fccnum]); - cep->fccp = fccp; /* Keep the pointers handy */ - cep->ep = ep; - - /* Disable receive and transmit in case someone left it running. - */ - fccp->fcc_gfmr &= ~(FCC_GFMR_ENR | FCC_GFMR_ENT); -} - -/* Initialize the I/O pins for the FCC Ethernet. -*/ -static void __init -init_fcc_ioports(fcc_info_t *fip, volatile iop_cpm2_t *io, - volatile cpm2_map_t *immap) -{ - - /* FCC1 pins are on port A/C. FCC2/3 are port B/C. - */ - if (fip->fc_proff == PROFF_FCC1) { - /* Configure port A and C pins for FCC1 Ethernet. - */ - io->iop_pdira &= ~PA1_DIRA_BOUT; - io->iop_pdira |= PA1_DIRA_BIN; - io->iop_psora &= ~PA1_PSORA_BOUT; - io->iop_psora |= PA1_PSORA_BIN; - io->iop_ppara |= (PA1_DIRA_BOUT | PA1_DIRA_BIN); - } - if (fip->fc_proff == PROFF_FCC2) { - /* Configure port B and C pins for FCC Ethernet. - */ - io->iop_pdirb &= ~PB2_DIRB_BOUT; - io->iop_pdirb |= PB2_DIRB_BIN; - io->iop_psorb &= ~PB2_PSORB_BOUT; - io->iop_psorb |= PB2_PSORB_BIN; - io->iop_pparb |= (PB2_DIRB_BOUT | PB2_DIRB_BIN); - } - if (fip->fc_proff == PROFF_FCC3) { - /* Configure port B and C pins for FCC Ethernet. - */ - io->iop_pdirb &= ~PB3_DIRB_BOUT; - io->iop_pdirb |= PB3_DIRB_BIN; - io->iop_psorb &= ~PB3_PSORB_BOUT; - io->iop_psorb |= PB3_PSORB_BIN; - io->iop_pparb |= (PB3_DIRB_BOUT | PB3_DIRB_BIN); - - io->iop_pdirc &= ~PC3_DIRC_BOUT; - io->iop_pdirc |= PC3_DIRC_BIN; - io->iop_psorc &= ~PC3_PSORC_BOUT; - io->iop_psorc |= PC3_PSORC_BIN; - io->iop_pparc |= (PC3_DIRC_BOUT | PC3_DIRC_BIN); - - } - - /* Port C has clocks...... - */ - io->iop_psorc &= ~(fip->fc_trxclocks); - io->iop_pdirc &= ~(fip->fc_trxclocks); - io->iop_pparc |= fip->fc_trxclocks; - -#ifdef CONFIG_USE_MDIO - /* ....and the MII serial clock/data. - */ - io->iop_pdatc |= (fip->fc_mdio | fip->fc_mdck); - io->iop_podrc &= ~(fip->fc_mdio | fip->fc_mdck); - io->iop_pdirc |= (fip->fc_mdio | fip->fc_mdck); - io->iop_pparc &= ~(fip->fc_mdio | fip->fc_mdck); -#endif /* CONFIG_USE_MDIO */ - - /* Configure Serial Interface clock routing. - * First, clear all FCC bits to zero, - * then set the ones we want. - */ - immap->im_cpmux.cmx_fcr &= ~(fip->fc_clockmask); - immap->im_cpmux.cmx_fcr |= fip->fc_clockroute; -} - -static void __init -init_fcc_param(fcc_info_t *fip, struct net_device *dev, - volatile cpm2_map_t *immap) -{ - unsigned char *eap; - unsigned long mem_addr; - bd_t *bd; - int i, j; - struct fcc_enet_private *cep; - volatile fcc_enet_t *ep; - volatile cbd_t *bdp; - volatile cpm_cpm2_t *cp; - - cep = (struct fcc_enet_private *)(dev->priv); - ep = cep->ep; - cp = cpmp; - - bd = (bd_t *)__res; - - /* Zero the whole thing.....I must have missed some individually. - * It works when I do this. - */ - memset((char *)ep, 0, sizeof(fcc_enet_t)); - - /* Allocate space for the buffer descriptors from regular memory. - * Initialize base addresses for the buffer descriptors. - */ - cep->rx_bd_base = kmalloc(sizeof(cbd_t) * RX_RING_SIZE, - GFP_KERNEL | GFP_DMA); - ep->fen_genfcc.fcc_rbase = __pa(cep->rx_bd_base); - cep->tx_bd_base = kmalloc(sizeof(cbd_t) * TX_RING_SIZE, - GFP_KERNEL | GFP_DMA); - ep->fen_genfcc.fcc_tbase = __pa(cep->tx_bd_base); - - cep->dirty_tx = cep->cur_tx = cep->tx_bd_base; - cep->cur_rx = cep->rx_bd_base; - - ep->fen_genfcc.fcc_rstate = (CPMFCR_GBL | CPMFCR_EB) << 24; - ep->fen_genfcc.fcc_tstate = (CPMFCR_GBL | CPMFCR_EB) << 24; - - /* Set maximum bytes per receive buffer. - * It must be a multiple of 32. - */ - ep->fen_genfcc.fcc_mrblr = PKT_MAXBLR_SIZE; - - /* Allocate space in the reserved FCC area of DPRAM for the - * internal buffers. No one uses this space (yet), so we - * can do this. Later, we will add resource management for - * this area. - */ - mem_addr = CPM_FCC_SPECIAL_BASE + (fip->fc_fccnum * 128); - ep->fen_genfcc.fcc_riptr = mem_addr; - ep->fen_genfcc.fcc_tiptr = mem_addr+32; - ep->fen_padptr = mem_addr+64; - memset((char *)(&(immap->im_dprambase[(mem_addr+64)])), 0x88, 32); - - ep->fen_genfcc.fcc_rbptr = 0; - ep->fen_genfcc.fcc_tbptr = 0; - ep->fen_genfcc.fcc_rcrc = 0; - ep->fen_genfcc.fcc_tcrc = 0; - ep->fen_genfcc.fcc_res1 = 0; - ep->fen_genfcc.fcc_res2 = 0; - - ep->fen_camptr = 0; /* CAM isn't used in this driver */ - - /* Set CRC preset and mask. - */ - ep->fen_cmask = 0xdebb20e3; - ep->fen_cpres = 0xffffffff; - - ep->fen_crcec = 0; /* CRC Error counter */ - ep->fen_alec = 0; /* alignment error counter */ - ep->fen_disfc = 0; /* discard frame counter */ - ep->fen_retlim = 15; /* Retry limit threshold */ - ep->fen_pper = 0; /* Normal persistence */ - - /* Clear hash filter tables. - */ - ep->fen_gaddrh = 0; - ep->fen_gaddrl = 0; - ep->fen_iaddrh = 0; - ep->fen_iaddrl = 0; - - /* Clear the Out-of-sequence TxBD. - */ - ep->fen_tfcstat = 0; - ep->fen_tfclen = 0; - ep->fen_tfcptr = 0; - - ep->fen_mflr = PKT_MAXBUF_SIZE; /* maximum frame length register */ - ep->fen_minflr = PKT_MINBUF_SIZE; /* minimum frame length register */ - - /* Set Ethernet station address. - * - * This is supplied in the board information structure, so we - * copy that into the controller. - * So, far we have only been given one Ethernet address. We make - * it unique by setting a few bits in the upper byte of the - * non-static part of the address. - */ - eap = (unsigned char *)&(ep->fen_paddrh); - for (i=5; i>=0; i--) { - -/* - * The EP8260 only uses FCC3, so we can safely give it the real - * MAC address. - */ -#ifdef CONFIG_SBC82xx - if (i == 5) { - /* bd->bi_enetaddr holds the SCC0 address; the FCC - devices count up from there */ - dev->dev_addr[i] = bd->bi_enetaddr[i] & ~3; - dev->dev_addr[i] += 1 + fip->fc_fccnum; - *eap++ = dev->dev_addr[i]; - } -#else -#ifndef CONFIG_RPX8260 - if (i == 3) { - dev->dev_addr[i] = bd->bi_enetaddr[i]; - dev->dev_addr[i] |= (1 << (7 - fip->fc_fccnum)); - *eap++ = dev->dev_addr[i]; - } else -#endif - { - *eap++ = dev->dev_addr[i] = bd->bi_enetaddr[i]; - } -#endif - } - - ep->fen_taddrh = 0; - ep->fen_taddrm = 0; - ep->fen_taddrl = 0; - - ep->fen_maxd1 = PKT_MAXDMA_SIZE; /* maximum DMA1 length */ - ep->fen_maxd2 = PKT_MAXDMA_SIZE; /* maximum DMA2 length */ - - /* Clear stat counters, in case we ever enable RMON. - */ - ep->fen_octc = 0; - ep->fen_colc = 0; - ep->fen_broc = 0; - ep->fen_mulc = 0; - ep->fen_uspc = 0; - ep->fen_frgc = 0; - ep->fen_ospc = 0; - ep->fen_jbrc = 0; - ep->fen_p64c = 0; - ep->fen_p65c = 0; - ep->fen_p128c = 0; - ep->fen_p256c = 0; - ep->fen_p512c = 0; - ep->fen_p1024c = 0; - - ep->fen_rfthr = 0; /* Suggested by manual */ - ep->fen_rfcnt = 0; - ep->fen_cftype = 0; - - /* Now allocate the host memory pages and initialize the - * buffer descriptors. - */ - bdp = cep->tx_bd_base; - for (i=0; i<TX_RING_SIZE; i++) { - - /* Initialize the BD for every fragment in the page. - */ - bdp->cbd_sc = 0; - bdp->cbd_datlen = 0; - bdp->cbd_bufaddr = 0; - bdp++; - } - - /* Set the last buffer to wrap. - */ - bdp--; - bdp->cbd_sc |= BD_SC_WRAP; - - bdp = cep->rx_bd_base; - for (i=0; i<FCC_ENET_RX_PAGES; i++) { - - /* Allocate a page. - */ - mem_addr = __get_free_page(GFP_KERNEL); - - /* Initialize the BD for every fragment in the page. - */ - for (j=0; j<FCC_ENET_RX_FRPPG; j++) { - bdp->cbd_sc = BD_ENET_RX_EMPTY | BD_ENET_RX_INTR; - bdp->cbd_datlen = 0; - bdp->cbd_bufaddr = __pa(mem_addr); - mem_addr += FCC_ENET_RX_FRSIZE; - bdp++; - } - } - - /* Set the last buffer to wrap. - */ - bdp--; - bdp->cbd_sc |= BD_SC_WRAP; - - /* Let's re-initialize the channel now. We have to do it later - * than the manual describes because we have just now finished - * the BD initialization. - */ - cp->cp_cpcr = mk_cr_cmd(fip->fc_cpmpage, fip->fc_cpmblock, 0x0c, - CPM_CR_INIT_TRX) | CPM_CR_FLG; - while (cp->cp_cpcr & CPM_CR_FLG); - - cep->skb_cur = cep->skb_dirty = 0; -} - -/* Let 'er rip. -*/ -static void __init -init_fcc_startup(fcc_info_t *fip, struct net_device *dev) -{ - volatile fcc_t *fccp; - struct fcc_enet_private *cep; - - cep = (struct fcc_enet_private *)(dev->priv); - fccp = cep->fccp; - -#ifdef CONFIG_RPX8260 -#ifdef PHY_INTERRUPT - /* Route PHY interrupt to IRQ. The following code only works for - * IRQ1 - IRQ7. It does not work for Port C interrupts. - */ - *((volatile u_char *) (RPX_CSR_ADDR + 13)) &= ~BCSR13_FETH_IRQMASK; - *((volatile u_char *) (RPX_CSR_ADDR + 13)) |= - ((PHY_INTERRUPT - SIU_INT_IRQ1 + 1) << 4); -#endif - /* Initialize MDIO pins. */ - *((volatile u_char *) (RPX_CSR_ADDR + 4)) &= ~BCSR4_MII_MDC; - *((volatile u_char *) (RPX_CSR_ADDR + 4)) |= - BCSR4_MII_READ | BCSR4_MII_MDIO; - /* Enable external LXT971 PHY. */ - *((volatile u_char *) (RPX_CSR_ADDR + 4)) |= BCSR4_EN_PHY; - udelay(1000); - *((volatile u_char *) (RPX_CSR_ADDR+ 4)) |= BCSR4_EN_MII; - udelay(1000); -#endif /* ifdef CONFIG_RPX8260 */ - - fccp->fcc_fcce = 0xffff; /* Clear any pending events */ - - /* Leave FCC interrupts masked for now. Will be unmasked by - * fcc_restart(). - */ - fccp->fcc_fccm = 0; - - /* Install our interrupt handler. - */ - if (request_irq(fip->fc_interrupt, fcc_enet_interrupt, 0, "fenet", - dev) < 0) - printk("Can't get FCC IRQ %d\n", fip->fc_interrupt); - -#ifdef PHY_INTERRUPT - /* Make IRQn edge triggered. This does not work if PHY_INTERRUPT is - * on Port C. - */ - ((volatile cpm2_map_t *) CPM_MAP_ADDR)->im_intctl.ic_siexr |= - (1 << (14 - (PHY_INTERRUPT - SIU_INT_IRQ1))); - - if (request_irq(PHY_INTERRUPT, mii_link_interrupt, 0, - "mii", dev) < 0) - printk(KERN_CRIT "Can't get MII IRQ %d\n", PHY_INTERRUPT); -#endif /* PHY_INTERRUPT */ - - /* Set GFMR to enable Ethernet operating mode. - */ - fccp->fcc_gfmr = (FCC_GFMR_TCI | FCC_GFMR_MODE_ENET); - - /* Set sync/delimiters. - */ - fccp->fcc_fdsr = 0xd555; - - /* Set protocol specific processing mode for Ethernet. - * This has to be adjusted for Full Duplex operation after we can - * determine how to detect that. - */ - fccp->fcc_fpsmr = FCC_PSMR_ENCRC; - -#ifdef CONFIG_PQ2ADS - /* Enable the PHY. */ - *(volatile uint *)(BCSR_ADDR + 4) &= ~BCSR1_FETHIEN; - *(volatile uint *)(BCSR_ADDR + 4) |= BCSR1_FETH_RST; -#endif -#if defined(CONFIG_PQ2ADS) || defined(CONFIG_PQ2FADS) - /* Enable the 2nd PHY. */ - *(volatile uint *)(BCSR_ADDR + 12) &= ~BCSR3_FETHIEN2; - *(volatile uint *)(BCSR_ADDR + 12) |= BCSR3_FETH2_RST; -#endif - -#if defined(CONFIG_USE_MDIO) || defined(CONFIG_TQM8260) - /* start in full duplex mode, and negotiate speed - */ - fcc_restart (dev, 1); -#else - /* start in half duplex mode - */ - fcc_restart (dev, 0); -#endif -} - -#ifdef CONFIG_USE_MDIO -/* MII command/status interface. - * I'm not going to describe all of the details. You can find the - * protocol definition in many other places, including the data sheet - * of most PHY parts. - * I wonder what "they" were thinking (maybe weren't) when they leave - * the I2C in the CPM but I have to toggle these bits...... - */ -#ifdef CONFIG_RPX8260 - /* The EP8260 has the MDIO pins in a BCSR instead of on Port C - * like most other boards. - */ -#define MDIO_ADDR ((volatile u_char *)(RPX_CSR_ADDR + 4)) -#define MAKE_MDIO_OUTPUT *MDIO_ADDR &= ~BCSR4_MII_READ -#define MAKE_MDIO_INPUT *MDIO_ADDR |= BCSR4_MII_READ | BCSR4_MII_MDIO -#define OUT_MDIO(bit) \ - if (bit) \ - *MDIO_ADDR |= BCSR4_MII_MDIO; \ - else \ - *MDIO_ADDR &= ~BCSR4_MII_MDIO; -#define IN_MDIO (*MDIO_ADDR & BCSR4_MII_MDIO) -#define OUT_MDC(bit) \ - if (bit) \ - *MDIO_ADDR |= BCSR4_MII_MDC; \ - else \ - *MDIO_ADDR &= ~BCSR4_MII_MDC; -#else /* ifdef CONFIG_RPX8260 */ - /* This is for the usual case where the MDIO pins are on Port C. - */ -#define MDIO_ADDR (((volatile cpm2_map_t *)CPM_MAP_ADDR)->im_ioport) -#define MAKE_MDIO_OUTPUT MDIO_ADDR.iop_pdirc |= fip->fc_mdio -#define MAKE_MDIO_INPUT MDIO_ADDR.iop_pdirc &= ~fip->fc_mdio -#define OUT_MDIO(bit) \ - if (bit) \ - MDIO_ADDR.iop_pdatc |= fip->fc_mdio; \ - else \ - MDIO_ADDR.iop_pdatc &= ~fip->fc_mdio; -#define IN_MDIO ((MDIO_ADDR.iop_pdatc) & fip->fc_mdio) -#define OUT_MDC(bit) \ - if (bit) \ - MDIO_ADDR.iop_pdatc |= fip->fc_mdck; \ - else \ - MDIO_ADDR.iop_pdatc &= ~fip->fc_mdck; -#endif /* ifdef CONFIG_RPX8260 */ - -static uint -mii_send_receive(fcc_info_t *fip, uint cmd) -{ - uint retval; - int read_op, i, off; - const int us = 1; - - read_op = ((cmd & 0xf0000000) == 0x60000000); - - /* Write preamble - */ - OUT_MDIO(1); - MAKE_MDIO_OUTPUT; - OUT_MDIO(1); - for (i = 0; i < 32; i++) - { - udelay(us); - OUT_MDC(1); - udelay(us); - OUT_MDC(0); - } - - /* Write data - */ - for (i = 0, off = 31; i < (read_op ? 14 : 32); i++, --off) - { - OUT_MDIO((cmd >> off) & 0x00000001); - udelay(us); - OUT_MDC(1); - udelay(us); - OUT_MDC(0); - } - - retval = cmd; - - if (read_op) - { - retval >>= 16; - - MAKE_MDIO_INPUT; - udelay(us); - OUT_MDC(1); - udelay(us); - OUT_MDC(0); - - for (i = 0; i < 16; i++) - { - udelay(us); - OUT_MDC(1); - udelay(us); - retval <<= 1; - if (IN_MDIO) - retval++; - OUT_MDC(0); - } - } - - MAKE_MDIO_INPUT; - udelay(us); - OUT_MDC(1); - udelay(us); - OUT_MDC(0); - - return retval; -} -#endif /* CONFIG_USE_MDIO */ - -static void -fcc_stop(struct net_device *dev) -{ - struct fcc_enet_private *fep= (struct fcc_enet_private *)(dev->priv); - volatile fcc_t *fccp = fep->fccp; - fcc_info_t *fip = fep->fip; - volatile fcc_enet_t *ep = fep->ep; - volatile cpm_cpm2_t *cp = cpmp; - volatile cbd_t *bdp; - int i; - - if ((fccp->fcc_gfmr & (FCC_GFMR_ENR | FCC_GFMR_ENT)) == 0) - return; /* already down */ - - fccp->fcc_fccm = 0; - - /* issue the graceful stop tx command */ - while (cp->cp_cpcr & CPM_CR_FLG); - cp->cp_cpcr = mk_cr_cmd(fip->fc_cpmpage, fip->fc_cpmblock, - 0x0c, CPM_CR_GRA_STOP_TX) | CPM_CR_FLG; - while (cp->cp_cpcr & CPM_CR_FLG); - - /* Disable transmit/receive */ - fccp->fcc_gfmr &= ~(FCC_GFMR_ENR | FCC_GFMR_ENT); - - /* issue the restart tx command */ - fccp->fcc_fcce = FCC_ENET_GRA; - while (cp->cp_cpcr & CPM_CR_FLG); - cp->cp_cpcr = mk_cr_cmd(fip->fc_cpmpage, fip->fc_cpmblock, - 0x0c, CPM_CR_RESTART_TX) | CPM_CR_FLG; - while (cp->cp_cpcr & CPM_CR_FLG); - - /* free tx buffers */ - fep->skb_cur = fep->skb_dirty = 0; - for (i=0; i<=TX_RING_MOD_MASK; i++) { - if (fep->tx_skbuff[i] != NULL) { - dev_kfree_skb(fep->tx_skbuff[i]); - fep->tx_skbuff[i] = NULL; - } - } - fep->dirty_tx = fep->cur_tx = fep->tx_bd_base; - fep->tx_free = TX_RING_SIZE; - ep->fen_genfcc.fcc_tbptr = ep->fen_genfcc.fcc_tbase; - - /* Initialize the tx buffer descriptors. */ - bdp = fep->tx_bd_base; - for (i=0; i<TX_RING_SIZE; i++) { - bdp->cbd_sc = 0; - bdp->cbd_datlen = 0; - bdp->cbd_bufaddr = 0; - bdp++; - } - /* Set the last buffer to wrap. */ - bdp--; - bdp->cbd_sc |= BD_SC_WRAP; -} - -static void -fcc_restart(struct net_device *dev, int duplex) -{ - struct fcc_enet_private *fep = (struct fcc_enet_private *)(dev->priv); - volatile fcc_t *fccp = fep->fccp; - - /* stop any transmissions in progress */ - fcc_stop(dev); - - if (duplex) - fccp->fcc_fpsmr |= FCC_PSMR_FDE | FCC_PSMR_LPB; - else - fccp->fcc_fpsmr &= ~(FCC_PSMR_FDE | FCC_PSMR_LPB); - - /* Enable interrupts for transmit error, complete frame - * received, and any transmit buffer we have also set the - * interrupt flag. - */ - fccp->fcc_fccm = (FCC_ENET_TXE | FCC_ENET_RXF | FCC_ENET_TXB); - - /* Enable transmit/receive */ - fccp->fcc_gfmr |= FCC_GFMR_ENR | FCC_GFMR_ENT; -} - -static int -fcc_enet_open(struct net_device *dev) -{ - struct fcc_enet_private *fep = dev->priv; - -#ifdef CONFIG_USE_MDIO - fep->sequence_done = 0; - fep->link = 0; - - if (fep->phy) { - fcc_restart(dev, 0); /* always start in half-duplex */ - mii_do_cmd(dev, fep->phy->ack_int); - mii_do_cmd(dev, fep->phy->config); - mii_do_cmd(dev, phy_cmd_config); /* display configuration */ - while(!fep->sequence_done) - schedule(); - - mii_do_cmd(dev, fep->phy->startup); - netif_start_queue(dev); - return 0; /* Success */ - } - return -ENODEV; /* No PHY we understand */ -#else - fep->link = 1; - fcc_restart(dev, 0); /* always start in half-duplex */ - netif_start_queue(dev); - return 0; /* Always succeed */ -#endif /* CONFIG_USE_MDIO */ -} - |