[PATCH] m68knommu: FEC ethernet support for the ColdFire 5208
Add support for the new 5208 ColdFire (Matt Waddel / Mike Lavender) Patch originally from Matt Waddel (from code originally written by Mike Lavender). I also re-ordered the init code to avoid interrupt lockups on some platforms (at least the 5275, but others have reported it on the 5235 as well). Signed-off-by: Greg Ungerer <gerg@uclinux.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Greg Ungerer
Linus Torvalds
parent
7a77d918ad
commit
562d2f8ce4
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@ -18,8 +18,8 @@
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* Much better multiple PHY support by Magnus Damm.
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* Copyright (c) 2000 Ericsson Radio Systems AB.
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*
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* Support for FEC controller of ColdFire/5270/5271/5272/5274/5275/5280/5282.
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* Copyright (c) 2001-2004 Greg Ungerer (gerg@snapgear.com)
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* Support for FEC controller of ColdFire processors.
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* Copyright (c) 2001-2005 Greg Ungerer (gerg@snapgear.com)
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*
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* Bug fixes and cleanup by Philippe De Muyter (phdm@macqel.be)
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* Copyright (c) 2004-2005 Macq Electronique SA.
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@ -50,7 +50,8 @@
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#include <asm/pgtable.h>
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#if defined(CONFIG_M523x) || defined(CONFIG_M527x) || \
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defined(CONFIG_M5272) || defined(CONFIG_M528x)
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defined(CONFIG_M5272) || defined(CONFIG_M528x) || \
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defined(CONFIG_M520x)
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#include <asm/coldfire.h>
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#include <asm/mcfsim.h>
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#include "fec.h"
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@ -77,6 +78,8 @@ static unsigned int fec_hw[] = {
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(MCF_MBAR + 0x1800),
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#elif defined(CONFIG_M523x) || defined(CONFIG_M528x)
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(MCF_MBAR + 0x1000),
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#elif defined(CONFIG_M520x)
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(MCF_MBAR+0x30000),
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#else
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&(((immap_t *)IMAP_ADDR)->im_cpm.cp_fec),
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#endif
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@ -139,6 +142,10 @@ typedef struct {
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#define TX_RING_SIZE 16 /* Must be power of two */
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#define TX_RING_MOD_MASK 15 /* for this to work */
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#if (((RX_RING_SIZE + TX_RING_SIZE) * 8) > PAGE_SIZE)
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#error "FEC: descriptor ring size contants too large"
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#endif
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/* Interrupt events/masks.
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*/
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#define FEC_ENET_HBERR ((uint)0x80000000) /* Heartbeat error */
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@ -164,7 +171,8 @@ typedef struct {
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* size bits. Other FEC hardware does not, so we need to take that into
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* account when setting it.
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*/
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#if defined(CONFIG_M523x) || defined(CONFIG_M527x) || defined(CONFIG_M528x)
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#if defined(CONFIG_M523x) || defined(CONFIG_M527x) || defined(CONFIG_M528x) || \
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defined(CONFIG_M520x)
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#define OPT_FRAME_SIZE (PKT_MAXBUF_SIZE << 16)
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#else
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#define OPT_FRAME_SIZE 0
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@ -1136,6 +1144,65 @@ static phy_info_t const phy_info_ks8721bl = {
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.shutdown = phy_cmd_ks8721bl_shutdown
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};
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/* ------------------------------------------------------------------------- */
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/* register definitions for the DP83848 */
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#define MII_DP8384X_PHYSTST 16 /* PHY Status Register */
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static void mii_parse_dp8384x_sr2(uint mii_reg, struct net_device *dev)
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{
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struct fec_enet_private *fep = dev->priv;
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volatile uint *s = &(fep->phy_status);
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*s &= ~(PHY_STAT_SPMASK | PHY_STAT_LINK | PHY_STAT_ANC);
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/* Link up */
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if (mii_reg & 0x0001) {
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fep->link = 1;
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*s |= PHY_STAT_LINK;
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} else
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fep->link = 0;
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/* Status of link */
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if (mii_reg & 0x0010) /* Autonegotioation complete */
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*s |= PHY_STAT_ANC;
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if (mii_reg & 0x0002) { /* 10MBps? */
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if (mii_reg & 0x0004) /* Full Duplex? */
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*s |= PHY_STAT_10FDX;
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else
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*s |= PHY_STAT_10HDX;
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} else { /* 100 Mbps? */
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if (mii_reg & 0x0004) /* Full Duplex? */
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*s |= PHY_STAT_100FDX;
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else
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*s |= PHY_STAT_100HDX;
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}
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if (mii_reg & 0x0008)
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*s |= PHY_STAT_FAULT;
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}
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static phy_info_t phy_info_dp83848= {
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0x020005c9,
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"DP83848",
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(const phy_cmd_t []) { /* config */
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{ mk_mii_read(MII_REG_CR), mii_parse_cr },
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{ mk_mii_read(MII_REG_ANAR), mii_parse_anar },
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{ mk_mii_read(MII_DP8384X_PHYSTST), mii_parse_dp8384x_sr2 },
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{ mk_mii_end, }
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},
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(const phy_cmd_t []) { /* startup - enable interrupts */
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{ mk_mii_write(MII_REG_CR, 0x1200), NULL }, /* autonegotiate */
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{ mk_mii_read(MII_REG_SR), mii_parse_sr },
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{ mk_mii_end, }
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},
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(const phy_cmd_t []) { /* ack_int - never happens, no interrupt */
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{ mk_mii_end, }
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},
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(const phy_cmd_t []) { /* shutdown */
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{ mk_mii_end, }
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},
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};
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/* ------------------------------------------------------------------------- */
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static phy_info_t const * const phy_info[] = {
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@ -1144,6 +1211,7 @@ static phy_info_t const * const phy_info[] = {
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&phy_info_qs6612,
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&phy_info_am79c874,
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&phy_info_ks8721bl,
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&phy_info_dp83848,
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NULL
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};
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@ -1422,6 +1490,134 @@ static void __inline__ fec_uncache(unsigned long addr)
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/* ------------------------------------------------------------------------- */
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#elif defined(CONFIG_M520x)
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/*
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* Code specific to Coldfire 520x
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*/
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static void __inline__ fec_request_intrs(struct net_device *dev)
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{
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struct fec_enet_private *fep;
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int b;
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static const struct idesc {
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char *name;
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unsigned short irq;
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} *idp, id[] = {
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{ "fec(TXF)", 23 },
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{ "fec(TXB)", 24 },
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{ "fec(TXFIFO)", 25 },
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{ "fec(TXCR)", 26 },
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{ "fec(RXF)", 27 },
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{ "fec(RXB)", 28 },
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{ "fec(MII)", 29 },
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{ "fec(LC)", 30 },
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{ "fec(HBERR)", 31 },
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{ "fec(GRA)", 32 },
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{ "fec(EBERR)", 33 },
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{ "fec(BABT)", 34 },
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{ "fec(BABR)", 35 },
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{ NULL },
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};
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fep = netdev_priv(dev);
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b = 64 + 13;
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/* Setup interrupt handlers. */
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for (idp = id; idp->name; idp++) {
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if (request_irq(b+idp->irq,fec_enet_interrupt,0,idp->name,dev)!=0)
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printk("FEC: Could not allocate %s IRQ(%d)!\n", idp->name, b+idp->irq);
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}
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/* Unmask interrupts at ColdFire interrupt controller */
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{
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volatile unsigned char *icrp;
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volatile unsigned long *imrp;
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icrp = (volatile unsigned char *) (MCF_IPSBAR + MCFICM_INTC0 +
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MCFINTC_ICR0);
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for (b = 36; (b < 49); b++)
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icrp[b] = 0x04;
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imrp = (volatile unsigned long *) (MCF_IPSBAR + MCFICM_INTC0 +
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MCFINTC_IMRH);
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*imrp &= ~0x0001FFF0;
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}
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*(volatile unsigned char *)(MCF_IPSBAR + MCF_GPIO_PAR_FEC) |= 0xf0;
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*(volatile unsigned char *)(MCF_IPSBAR + MCF_GPIO_PAR_FECI2C) |= 0x0f;
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}
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static void __inline__ fec_set_mii(struct net_device *dev, struct fec_enet_private *fep)
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{
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volatile fec_t *fecp;
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fecp = fep->hwp;
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fecp->fec_r_cntrl = OPT_FRAME_SIZE | 0x04;
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fecp->fec_x_cntrl = 0x00;
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/*
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* Set MII speed to 2.5 MHz
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* See 5282 manual section 17.5.4.7: MSCR
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*/
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fep->phy_speed = ((((MCF_CLK / 2) / (2500000 / 10)) + 5) / 10) * 2;
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fecp->fec_mii_speed = fep->phy_speed;
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fec_restart(dev, 0);
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}
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static void __inline__ fec_get_mac(struct net_device *dev)
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{
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struct fec_enet_private *fep = netdev_priv(dev);
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volatile fec_t *fecp;
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unsigned char *iap, tmpaddr[ETH_ALEN];
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fecp = fep->hwp;
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if (FEC_FLASHMAC) {
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/*
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* Get MAC address from FLASH.
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* If it is all 1's or 0's, use the default.
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*/
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iap = FEC_FLASHMAC;
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if ((iap[0] == 0) && (iap[1] == 0) && (iap[2] == 0) &&
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(iap[3] == 0) && (iap[4] == 0) && (iap[5] == 0))
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iap = fec_mac_default;
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if ((iap[0] == 0xff) && (iap[1] == 0xff) && (iap[2] == 0xff) &&
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(iap[3] == 0xff) && (iap[4] == 0xff) && (iap[5] == 0xff))
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iap = fec_mac_default;
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} else {
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*((unsigned long *) &tmpaddr[0]) = fecp->fec_addr_low;
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*((unsigned short *) &tmpaddr[4]) = (fecp->fec_addr_high >> 16);
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iap = &tmpaddr[0];
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}
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memcpy(dev->dev_addr, iap, ETH_ALEN);
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/* Adjust MAC if using default MAC address */
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if (iap == fec_mac_default)
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dev->dev_addr[ETH_ALEN-1] = fec_mac_default[ETH_ALEN-1] + fep->index;
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}
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static void __inline__ fec_enable_phy_intr(void)
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{
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}
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static void __inline__ fec_disable_phy_intr(void)
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{
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}
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static void __inline__ fec_phy_ack_intr(void)
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{
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}
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static void __inline__ fec_localhw_setup(void)
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{
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}
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static void __inline__ fec_uncache(unsigned long addr)
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{
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}
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/* ------------------------------------------------------------------------- */
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#else
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/*
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@ -1952,6 +2148,14 @@ int __init fec_enet_init(struct net_device *dev)
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if (index >= FEC_MAX_PORTS)
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return -ENXIO;
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/* Allocate memory for buffer descriptors.
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*/
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mem_addr = __get_free_page(GFP_KERNEL);
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if (mem_addr == 0) {
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printk("FEC: allocate descriptor memory failed?\n");
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return -ENOMEM;
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}
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/* Create an Ethernet device instance.
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*/
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fecp = (volatile fec_t *) fec_hw[index];
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@ -1964,16 +2168,6 @@ int __init fec_enet_init(struct net_device *dev)
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fecp->fec_ecntrl = 1;
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udelay(10);
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/* Clear and enable interrupts */
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fecp->fec_ievent = 0xffc00000;
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fecp->fec_imask = (FEC_ENET_TXF | FEC_ENET_TXB |
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FEC_ENET_RXF | FEC_ENET_RXB | FEC_ENET_MII);
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fecp->fec_hash_table_high = 0;
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fecp->fec_hash_table_low = 0;
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fecp->fec_r_buff_size = PKT_MAXBLR_SIZE;
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fecp->fec_ecntrl = 2;
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fecp->fec_r_des_active = 0x01000000;
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/* Set the Ethernet address. If using multiple Enets on the 8xx,
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* this needs some work to get unique addresses.
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*
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@ -1982,14 +2176,6 @@ int __init fec_enet_init(struct net_device *dev)
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*/
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fec_get_mac(dev);
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/* Allocate memory for buffer descriptors.
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*/
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if (((RX_RING_SIZE + TX_RING_SIZE) * sizeof(cbd_t)) > PAGE_SIZE) {
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printk("FEC init error. Need more space.\n");
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printk("FEC initialization failed.\n");
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return 1;
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}
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mem_addr = __get_free_page(GFP_KERNEL);
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cbd_base = (cbd_t *)mem_addr;
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/* XXX: missing check for allocation failure */
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@ -2067,6 +2253,16 @@ int __init fec_enet_init(struct net_device *dev)
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*/
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fec_request_intrs(dev);
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/* Clear and enable interrupts */
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fecp->fec_ievent = 0xffc00000;
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fecp->fec_imask = (FEC_ENET_TXF | FEC_ENET_TXB |
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FEC_ENET_RXF | FEC_ENET_RXB | FEC_ENET_MII);
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fecp->fec_hash_table_high = 0;
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fecp->fec_hash_table_low = 0;
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fecp->fec_r_buff_size = PKT_MAXBLR_SIZE;
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fecp->fec_ecntrl = 2;
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fecp->fec_r_des_active = 0x01000000;
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dev->base_addr = (unsigned long)fecp;
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/* The FEC Ethernet specific entries in the device structure. */
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