diff options
| -rw-r--r-- | drivers/net/fec.c | 240 |
1 files changed, 218 insertions, 22 deletions
diff --git a/drivers/net/fec.c b/drivers/net/fec.c index 85504fb900d..bd6983d1afb 100644 --- a/drivers/net/fec.c +++ b/drivers/net/fec.c @@ -18,8 +18,8 @@ * Much better multiple PHY support by Magnus Damm. * Copyright (c) 2000 Ericsson Radio Systems AB. * - * Support for FEC controller of ColdFire/5270/5271/5272/5274/5275/5280/5282. - * Copyright (c) 2001-2004 Greg Ungerer (gerg@snapgear.com) + * Support for FEC controller of ColdFire processors. + * Copyright (c) 2001-2005 Greg Ungerer (gerg@snapgear.com) * * Bug fixes and cleanup by Philippe De Muyter (phdm@macqel.be) * Copyright (c) 2004-2005 Macq Electronique SA. @@ -50,7 +50,8 @@ #include <asm/pgtable.h> #if defined(CONFIG_M523x) || defined(CONFIG_M527x) || \ - defined(CONFIG_M5272) || defined(CONFIG_M528x) + defined(CONFIG_M5272) || defined(CONFIG_M528x) || \ + defined(CONFIG_M520x) #include <asm/coldfire.h> #include <asm/mcfsim.h> #include "fec.h" @@ -77,6 +78,8 @@ static unsigned int fec_hw[] = { (MCF_MBAR + 0x1800), #elif defined(CONFIG_M523x) || defined(CONFIG_M528x) (MCF_MBAR + 0x1000), +#elif defined(CONFIG_M520x) + (MCF_MBAR+0x30000), #else &(((immap_t *)IMAP_ADDR)->im_cpm.cp_fec), #endif @@ -139,6 +142,10 @@ typedef struct { #define TX_RING_SIZE 16 /* Must be power of two */ #define TX_RING_MOD_MASK 15 /* for this to work */ +#if (((RX_RING_SIZE + TX_RING_SIZE) * 8) > PAGE_SIZE) +#error "FEC: descriptor ring size contants too large" +#endif + /* Interrupt events/masks. */ #define FEC_ENET_HBERR ((uint)0x80000000) /* Heartbeat error */ @@ -164,7 +171,8 @@ typedef struct { * size bits. Other FEC hardware does not, so we need to take that into * account when setting it. */ -#if defined(CONFIG_M523x) || defined(CONFIG_M527x) || defined(CONFIG_M528x) +#if defined(CONFIG_M523x) || defined(CONFIG_M527x) || defined(CONFIG_M528x) || \ + defined(CONFIG_M520x) #define OPT_FRAME_SIZE (PKT_MAXBUF_SIZE << 16) #else #define OPT_FRAME_SIZE 0 @@ -1137,6 +1145,65 @@ static phy_info_t const phy_info_ks8721bl = { }; /* ------------------------------------------------------------------------- */ +/* register definitions for the DP83848 */ + +#define MII_DP8384X_PHYSTST 16 /* PHY Status Register */ + +static void mii_parse_dp8384x_sr2(uint mii_reg, struct net_device *dev) +{ + struct fec_enet_private *fep = dev->priv; + volatile uint *s = &(fep->phy_status); + + *s &= ~(PHY_STAT_SPMASK | PHY_STAT_LINK | PHY_STAT_ANC); + + /* Link up */ + if (mii_reg & 0x0001) { + fep->link = 1; + *s |= PHY_STAT_LINK; + } else + fep->link = 0; + /* Status of link */ + if (mii_reg & 0x0010) /* Autonegotioation complete */ + *s |= PHY_STAT_ANC; + if (mii_reg & 0x0002) { /* 10MBps? */ + if (mii_reg & 0x0004) /* Full Duplex? */ + *s |= PHY_STAT_10FDX; + else + *s |= PHY_STAT_10HDX; + } else { /* 100 Mbps? */ + if (mii_reg & 0x0004) /* Full Duplex? */ + *s |= PHY_STAT_100FDX; + else + *s |= PHY_STAT_100HDX; + } + if (mii_reg & 0x0008) + *s |= PHY_STAT_FAULT; +} + +static phy_info_t phy_info_dp83848= { + 0x020005c9, + "DP83848", + + (const phy_cmd_t []) { /* config */ + { mk_mii_read(MII_REG_CR), mii_parse_cr }, + { mk_mii_read(MII_REG_ANAR), mii_parse_anar }, + { mk_mii_read(MII_DP8384X_PHYSTST), mii_parse_dp8384x_sr2 }, + { mk_mii_end, } + }, + (const phy_cmd_t []) { /* startup - enable interrupts */ + { mk_mii_write(MII_REG_CR, 0x1200), NULL }, /* autonegotiate */ + { mk_mii_read(MII_REG_SR), mii_parse_sr }, + { mk_mii_end, } + }, + (const phy_cmd_t []) { /* ack_int - never happens, no interrupt */ + { mk_mii_end, } + }, + (const phy_cmd_t []) { /* shutdown */ + { mk_mii_end, } + }, +}; + +/* ------------------------------------------------------------------------- */ static phy_info_t const * const phy_info[] = { &phy_info_lxt970, @@ -1144,6 +1211,7 @@ static phy_info_t const * const phy_info[] = { &phy_info_qs6612, &phy_info_am79c874, &phy_info_ks8721bl, + &phy_info_dp83848, NULL }; @@ -1422,6 +1490,134 @@ static void __inline__ fec_uncache(unsigned long addr) /* ------------------------------------------------------------------------- */ +#elif defined(CONFIG_M520x) + +/* + * Code specific to Coldfire 520x + */ +static void __inline__ fec_request_intrs(struct net_device *dev) +{ + struct fec_enet_private *fep; + int b; + static const struct idesc { + char *name; + unsigned short irq; + } *idp, id[] = { + { "fec(TXF)", 23 }, + { "fec(TXB)", 24 }, + { "fec(TXFIFO)", 25 }, + { "fec(TXCR)", 26 }, + { "fec(RXF)", 27 }, + { "fec(RXB)", 28 }, + { "fec(MII)", 29 }, + { "fec(LC)", 30 }, + { "fec(HBERR)", 31 }, + { "fec(GRA)", 32 }, + { "fec(EBERR)", 33 }, + { "fec(BABT)", 34 }, + { "fec(BABR)", 35 }, + { NULL }, + }; + + fep = netdev_priv(dev); + b = 64 + 13; + + /* Setup interrupt handlers. */ + for (idp = id; idp->name; idp++) { + if (request_irq(b+idp->irq,fec_enet_interrupt,0,idp->name,dev)!=0) + printk("FEC: Could not allocate %s IRQ(%d)!\n", idp->name, b+idp->irq); + } + + /* Unmask interrupts at ColdFire interrupt controller */ + { + volatile unsigned char *icrp; + volatile unsigned long *imrp; + + icrp = (volatile unsigned char *) (MCF_IPSBAR + MCFICM_INTC0 + + MCFINTC_ICR0); + for (b = 36; (b < 49); b++) + icrp[b] = 0x04; + imrp = (volatile unsigned long *) (MCF_IPSBAR + MCFICM_INTC0 + + MCFINTC_IMRH); + *imrp &= ~0x0001FFF0; + } + *(volatile unsigned char *)(MCF_IPSBAR + MCF_GPIO_PAR_FEC) |= 0xf0; + *(volatile unsigned char *)(MCF_IPSBAR + MCF_GPIO_PAR_FECI2C) |= 0x0f; +} + +static void __inline__ fec_set_mii(struct net_device *dev, struct fec_enet_private *fep) +{ + volatile fec_t *fecp; + + fecp = fep->hwp; + fecp->fec_r_cntrl = OPT_FRAME_SIZE | 0x04; + fecp->fec_x_cntrl = 0x00; + + /* + * Set MII speed to 2.5 MHz + * See 5282 manual section 17.5.4.7: MSCR + */ + fep->phy_speed = ((((MCF_CLK / 2) / (2500000 / 10)) + 5) / 10) * 2; + fecp->fec_mii_speed = fep->phy_speed; + + fec_restart(dev, 0); +} + +static void __inline__ fec_get_mac(struct net_device *dev) +{ + struct fec_enet_private *fep = netdev_priv(dev); + volatile fec_t *fecp; + unsigned char *iap, tmpaddr[ETH_ALEN]; + + fecp = fep->hwp; + + if (FEC_FLASHMAC) { + /* + * Get MAC address from FLASH. + * If it is all 1's or 0's, use the default. + */ + iap = FEC_FLASHMAC; + if ((iap[0] == 0) && (iap[1] == 0) && (iap[2] == 0) && + (iap[3] == 0) && (iap[4] == 0) && (iap[5] == 0)) + iap = fec_mac_default; + if ((iap[0] == 0xff) && (iap[1] == 0xff) && (iap[2] == 0xff) && + (iap[3] == 0xff) && (iap[4] == 0xff) && (iap[5] == 0xff)) + iap = fec_mac_default; + } else { + *((unsigned long *) &tmpaddr[0]) = fecp->fec_addr_low; + *((unsigned short *) &tmpaddr[4]) = (fecp->fec_addr_high >> 16); + iap = &tmpaddr[0]; + } + + memcpy(dev->dev_addr, iap, ETH_ALEN); + + /* Adjust MAC if using default MAC address */ + if (iap == fec_mac_default) + dev->dev_addr[ETH_ALEN-1] = fec_mac_default[ETH_ALEN-1] + fep->index; +} + +static void __inline__ fec_enable_phy_intr(void) +{ +} + +static void __inline__ fec_disable_phy_intr(void) +{ +} + +static void __inline__ fec_phy_ack_intr(void) +{ +} + +static void __inline__ fec_localhw_setup(void) +{ +} + +static void __inline__ fec_uncache(unsigned long addr) +{ +} + +/* ------------------------------------------------------------------------- */ + #else /* @@ -1952,6 +2148,14 @@ int __init fec_enet_init(struct net_device *dev) if (index >= FEC_MAX_PORTS) return -ENXIO; + /* Allocate memory for buffer descriptors. + */ + mem_addr = __get_free_page(GFP_KERNEL); + if (mem_addr == 0) { + printk("FEC: allocate descriptor memory failed?\n"); + return -ENOMEM; + } + /* Create an Ethernet device instance. */ fecp = (volatile fec_t *) fec_hw[index]; @@ -1964,16 +2168,6 @@ int __init fec_enet_init(struct net_device *dev) fecp->fec_ecntrl = 1; udelay(10); - /* Clear and enable interrupts */ - fecp->fec_ievent = 0xffc00000; - fecp->fec_imask = (FEC_ENET_TXF | FEC_ENET_TXB | - FEC_ENET_RXF | FEC_ENET_RXB | FEC_ENET_MII); - fecp->fec_hash_table_high = 0; - fecp->fec_hash_table_low = 0; - fecp->fec_r_buff_size = PKT_MAXBLR_SIZE; - fecp->fec_ecntrl = 2; - fecp->fec_r_des_active = 0x01000000; - /* Set the Ethernet address. If using multiple Enets on the 8xx, * this needs some work to get unique addresses. * @@ -1982,14 +2176,6 @@ int __init fec_enet_init(struct net_device *dev) */ fec_get_mac(dev); - /* Allocate memory for buffer descriptors. - */ - if (((RX_RING_SIZE + TX_RING_SIZE) * sizeof(cbd_t)) > PAGE_SIZE) { - printk("FEC init error. Need more space.\n"); - printk("FEC initialization failed.\n"); - return 1; - } - mem_addr = __get_free_page(GFP_KERNEL); cbd_base = (cbd_t *)mem_addr; /* XXX: missing check for allocation failure */ @@ -2067,6 +2253,16 @@ int __init fec_enet_init(struct net_device *dev) */ fec_request_intrs(dev); + /* Clear and enable interrupts */ + fecp->fec_ievent = 0xffc00000; + fecp->fec_imask = (FEC_ENET_TXF | FEC_ENET_TXB | + FEC_ENET_RXF | FEC_ENET_RXB | FEC_ENET_MII); + fecp->fec_hash_table_high = 0; + fecp->fec_hash_table_low = 0; + fecp->fec_r_buff_size = PKT_MAXBLR_SIZE; + fecp->fec_ecntrl = 2; + fecp->fec_r_des_active = 0x01000000; + dev->base_addr = (unsigned long)fecp; /* The FEC Ethernet specific entries in the device structure. */ |