diff options
Diffstat (limited to 'drivers/net/fec.c')
| -rw-r--r-- | drivers/net/fec.c | 890 |
1 files changed, 226 insertions, 664 deletions
diff --git a/drivers/net/fec.c b/drivers/net/fec.c index 2769083..a515acc 100644 --- a/drivers/net/fec.c +++ b/drivers/net/fec.c @@ -36,46 +36,32 @@ #include <linux/spinlock.h> #include <linux/workqueue.h> #include <linux/bitops.h> +#include <linux/io.h> +#include <linux/irq.h> +#include <linux/clk.h> +#include <linux/platform_device.h> -#include <asm/irq.h> -#include <asm/uaccess.h> -#include <asm/io.h> -#include <asm/pgtable.h> #include <asm/cacheflush.h> +#ifndef CONFIG_ARCH_MXC #include <asm/coldfire.h> #include <asm/mcfsim.h> +#endif + #include "fec.h" -#if defined(CONFIG_FEC2) -#define FEC_MAX_PORTS 2 +#ifdef CONFIG_ARCH_MXC +#include <mach/hardware.h> +#define FEC_ALIGNMENT 0xf #else -#define FEC_MAX_PORTS 1 -#endif - -#if defined(CONFIG_M5272) -#define HAVE_mii_link_interrupt +#define FEC_ALIGNMENT 0x3 #endif /* * Define the fixed address of the FEC hardware. */ -static unsigned int fec_hw[] = { #if defined(CONFIG_M5272) - (MCF_MBAR + 0x840), -#elif defined(CONFIG_M527x) - (MCF_MBAR + 0x1000), - (MCF_MBAR + 0x1800), -#elif defined(CONFIG_M523x) || defined(CONFIG_M528x) - (MCF_MBAR + 0x1000), -#elif defined(CONFIG_M520x) - (MCF_MBAR+0x30000), -#elif defined(CONFIG_M532x) - (MCF_MBAR+0xfc030000), -#else - &(((immap_t *)IMAP_ADDR)->im_cpm.cp_fec), -#endif -}; +#define HAVE_mii_link_interrupt static unsigned char fec_mac_default[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, @@ -98,6 +84,7 @@ static unsigned char fec_mac_default[] = { #else #define FEC_FLASHMAC 0 #endif +#endif /* CONFIG_M5272 */ /* Forward declarations of some structures to support different PHYs */ @@ -162,7 +149,7 @@ typedef struct { * account when setting it. */ #if defined(CONFIG_M523x) || defined(CONFIG_M527x) || defined(CONFIG_M528x) || \ - defined(CONFIG_M520x) || defined(CONFIG_M532x) + defined(CONFIG_M520x) || defined(CONFIG_M532x) || defined(CONFIG_ARCH_MXC) #define OPT_FRAME_SIZE (PKT_MAXBUF_SIZE << 16) #else #define OPT_FRAME_SIZE 0 @@ -182,6 +169,8 @@ struct fec_enet_private { struct net_device *netdev; + struct clk *clk; + /* The saved address of a sent-in-place packet/buffer, for skfree(). */ unsigned char *tx_bounce[TX_RING_SIZE]; struct sk_buff* tx_skbuff[TX_RING_SIZE]; @@ -190,6 +179,7 @@ struct fec_enet_private { /* CPM dual port RAM relative addresses. */ + dma_addr_t bd_dma; 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 */ @@ -342,10 +332,10 @@ fec_enet_start_xmit(struct sk_buff *skb, struct net_device *dev) * 4-byte boundaries. Use bounce buffers to copy data * and get it aligned. Ugh. */ - if (bdp->cbd_bufaddr & 0x3) { + if (bdp->cbd_bufaddr & FEC_ALIGNMENT) { unsigned int index; index = bdp - fep->tx_bd_base; - memcpy(fep->tx_bounce[index], (void *) bdp->cbd_bufaddr, bdp->cbd_datlen); + memcpy(fep->tx_bounce[index], (void *)skb->data, skb->len); bdp->cbd_bufaddr = __pa(fep->tx_bounce[index]); } @@ -359,8 +349,8 @@ fec_enet_start_xmit(struct sk_buff *skb, struct net_device *dev) /* Push the data cache so the CPM does not get stale memory * data. */ - flush_dcache_range((unsigned long)skb->data, - (unsigned long)skb->data + skb->len); + dma_sync_single(NULL, bdp->cbd_bufaddr, + bdp->cbd_datlen, DMA_TO_DEVICE); /* Send it on its way. Tell FEC it's ready, interrupt when done, * it's the last BD of the frame, and to put the CRC on the end. @@ -633,6 +623,9 @@ while (!((status = bdp->cbd_sc) & BD_ENET_RX_EMPTY)) { dev->stats.rx_bytes += pkt_len; data = (__u8*)__va(bdp->cbd_bufaddr); + dma_sync_single(NULL, (unsigned long)__pa(data), + pkt_len - 4, DMA_FROM_DEVICE); + /* This does 16 byte alignment, exactly what we need. * The packet length includes FCS, but we don't want to * include that when passing upstream as it messes up @@ -1114,7 +1107,7 @@ static phy_info_t const phy_info_am79c874 = { /* register definitions for the 8721 */ #define MII_KS8721BL_RXERCR 21 -#define MII_KS8721BL_ICSR 22 +#define MII_KS8721BL_ICSR 27 #define MII_KS8721BL_PHYCR 31 static phy_cmd_t const phy_cmd_ks8721bl_config[] = { @@ -1223,93 +1216,14 @@ static phy_info_t const * const phy_info[] = { #ifdef HAVE_mii_link_interrupt static irqreturn_t mii_link_interrupt(int irq, void * dev_id); -#endif -#if defined(CONFIG_M5272) /* - * Code specific to Coldfire 5272 setup. + * This is specific to the MII interrupt setup of the M5272EVB. */ -static void __inline__ fec_request_intrs(struct net_device *dev) -{ - volatile unsigned long *icrp; - static const struct idesc { - char *name; - unsigned short irq; - irq_handler_t handler; - } *idp, id[] = { - { "fec(RX)", 86, fec_enet_interrupt }, - { "fec(TX)", 87, fec_enet_interrupt }, - { "fec(OTHER)", 88, fec_enet_interrupt }, - { "fec(MII)", 66, mii_link_interrupt }, - { NULL }, - }; - - /* Setup interrupt handlers. */ - for (idp = id; idp->name; idp++) { - if (request_irq(idp->irq, idp->handler, IRQF_DISABLED, idp->name, dev) != 0) - printk("FEC: Could not allocate %s IRQ(%d)!\n", idp->name, idp->irq); - } - - /* Unmask interrupt at ColdFire 5272 SIM */ - icrp = (volatile unsigned long *) (MCF_MBAR + MCFSIM_ICR3); - *icrp = 0x00000ddd; - icrp = (volatile unsigned long *) (MCF_MBAR + MCFSIM_ICR1); - *icrp = 0x0d000000; -} - -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 5272 manual section 11.5.8: MSCR - */ - fep->phy_speed = ((((MCF_CLK / 4) / (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 = (unsigned char *)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_request_mii_intr(struct net_device *dev) { + if (request_irq(66, mii_link_interrupt, IRQF_DISABLED, "fec(MII)", dev) != 0) + printk("FEC: Could not allocate fec(MII) IRQ(66)!\n"); } static void __inline__ fec_disable_phy_intr(void) @@ -1327,244 +1241,7 @@ static void __inline__ fec_phy_ack_intr(void) *icrp = 0x0d000000; } -static void __inline__ fec_localhw_setup(void) -{ -} - -/* - * Do not need to make region uncached on 5272. - */ -static void __inline__ fec_uncache(unsigned long addr) -{ -} - -/* ------------------------------------------------------------------------- */ - -#elif defined(CONFIG_M523x) || defined(CONFIG_M527x) || defined(CONFIG_M528x) - -/* - * Code specific to Coldfire 5230/5231/5232/5234/5235, - * the 5270/5271/5274/5275 and 5280/5282 setups. - */ -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(RXF)", 27 }, - { "fec(MII)", 29 }, - { NULL }, - }; - - fep = netdev_priv(dev); - b = (fep->index) ? 128 : 64; - - /* Setup interrupt handlers. */ - for (idp = id; idp->name; idp++) { - if (request_irq(b+idp->irq, fec_enet_interrupt, IRQF_DISABLED, idp->name, dev) != 0) - printk("FEC: Could not allocate %s IRQ(%d)!\n", idp->name, b+idp->irq); - } - - /* Unmask interrupts at ColdFire 5280/5282 interrupt controller */ - { - volatile unsigned char *icrp; - volatile unsigned long *imrp; - int i, ilip; - - b = (fep->index) ? MCFICM_INTC1 : MCFICM_INTC0; - icrp = (volatile unsigned char *) (MCF_IPSBAR + b + - MCFINTC_ICR0); - for (i = 23, ilip = 0x28; (i < 36); i++) - icrp[i] = ilip--; - - imrp = (volatile unsigned long *) (MCF_IPSBAR + b + - MCFINTC_IMRH); - *imrp &= ~0x0000000f; - imrp = (volatile unsigned long *) (MCF_IPSBAR + b + - MCFINTC_IMRL); - *imrp &= ~0xff800001; - } - -#if defined(CONFIG_M528x) - /* Set up gpio outputs for MII lines */ - { - volatile u16 *gpio_paspar; - volatile u8 *gpio_pehlpar; - - gpio_paspar = (volatile u16 *) (MCF_IPSBAR + 0x100056); - gpio_pehlpar = (volatile u16 *) (MCF_IPSBAR + 0x100058); - *gpio_paspar |= 0x0f00; - *gpio_pehlpar = 0xc0; - } -#endif - -#if defined(CONFIG_M527x) - /* Set up gpio outputs for MII lines */ - { - volatile u8 *gpio_par_fec; - volatile u16 *gpio_par_feci2c; - - gpio_par_feci2c = (volatile u16 *)(MCF_IPSBAR + 0x100082); - /* Set up gpio outputs for FEC0 MII lines */ - gpio_par_fec = (volatile u8 *)(MCF_IPSBAR + 0x100078); - - *gpio_par_feci2c |= 0x0f00; - *gpio_par_fec |= 0xc0; - -#if defined(CONFIG_FEC2) - /* Set up gpio outputs for FEC1 MII lines */ - gpio_par_fec = (volatile u8 *)(MCF_IPSBAR + 0x100079); - - *gpio_par_feci2c |= 0x00a0; - *gpio_par_fec |= 0xc0; -#endif /* CONFIG_FEC2 */ - } -#endif /* CONFIG_M527x */ -} - -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) -{ -} - -/* - * Do not need to make region uncached on 5272. - */ -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(RXF)", 27 }, - { "fec(MII)", 29 }, - { 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, IRQF_DISABLED, 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); -} - +#ifdef CONFIG_M5272 static void __inline__ fec_get_mac(struct net_device *dev) { struct fec_enet_private *fep = netdev_priv(dev); @@ -1578,146 +1255,7 @@ static void __inline__ fec_get_mac(struct net_device *dev) * 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) -{ -} - -/* ------------------------------------------------------------------------- */ - -#elif defined(CONFIG_M532x) -/* - * Code specific for M532x - */ -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)", 36 }, - { "fec(RXF)", 40 }, - { "fec(MII)", 42 }, - { NULL }, - }; - - fep = netdev_priv(dev); - b = (fep->index) ? 128 : 64; - - /* Setup interrupt handlers. */ - for (idp = id; idp->name; idp++) { - if (request_irq(b+idp->irq, fec_enet_interrupt, IRQF_DISABLED, idp->name,dev) != 0) - printk("FEC: Could not allocate %s IRQ(%d)!\n", - idp->name, b+idp->irq); - } - - /* Unmask interrupts */ - MCF_INTC0_ICR36 = 0x2; - MCF_INTC0_ICR37 = 0x2; - MCF_INTC0_ICR38 = 0x2; - MCF_INTC0_ICR39 = 0x2; - MCF_INTC0_ICR40 = 0x2; - MCF_INTC0_ICR41 = 0x2; - MCF_INTC0_ICR42 = 0x2; - MCF_INTC0_ICR43 = 0x2; - MCF_INTC0_ICR44 = 0x2; - MCF_INTC0_ICR45 = 0x2; - MCF_INTC0_ICR46 = 0x2; - MCF_INTC0_ICR47 = 0x2; - MCF_INTC0_ICR48 = 0x2; - - MCF_INTC0_IMRH &= ~( - MCF_INTC_IMRH_INT_MASK36 | - MCF_INTC_IMRH_INT_MASK37 | - MCF_INTC_IMRH_INT_MASK38 | - MCF_INTC_IMRH_INT_MASK39 | - MCF_INTC_IMRH_INT_MASK40 | - MCF_INTC_IMRH_INT_MASK41 | - MCF_INTC_IMRH_INT_MASK42 | - MCF_INTC_IMRH_INT_MASK43 | - MCF_INTC_IMRH_INT_MASK44 | - MCF_INTC_IMRH_INT_MASK45 | - MCF_INTC_IMRH_INT_MASK46 | - MCF_INTC_IMRH_INT_MASK47 | - MCF_INTC_IMRH_INT_MASK48 ); - - /* Set up gpio outputs for MII lines */ - MCF_GPIO_PAR_FECI2C |= (0 | - MCF_GPIO_PAR_FECI2C_PAR_MDC_EMDC | - MCF_GPIO_PAR_FECI2C_PAR_MDIO_EMDIO); - MCF_GPIO_PAR_FEC = (0 | - MCF_GPIO_PAR_FEC_PAR_FEC_7W_FEC | - MCF_GPIO_PAR_FEC_PAR_FEC_MII_FEC); -} - -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 - */ - fep->phy_speed = (MCF_CLK / 3) / (2500000 * 2 ) * 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; + iap = (unsigned char *)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; @@ -1734,122 +1272,8 @@ static void __inline__ fec_get_mac(struct net_device *dev) /* 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) -{ -} - -/* - * Do not need to make region uncached on 532x. - */ -static void __inline__ fec_uncache(unsigned long addr) -{ -} - -/* ------------------------------------------------------------------------- */ - - -#else - -/* - * Code specific to the MPC860T setup. - */ -static void __inline__ fec_request_intrs(struct net_device *dev) -{ - volatile immap_t *immap; - - immap = (immap_t *)IMAP_ADDR; /* pointer to internal registers */ - - if (request_8xxirq(FEC_INTERRUPT, fec_enet_interrupt, 0, "fec", dev) != 0) - panic("Could not allocate FEC IRQ!"); -} - -static void __inline__ fec_get_mac(struct net_device *dev) -{ - bd_t *bd; - - bd = (bd_t *)__res; - memcpy(dev->dev_addr, bd->bi_enetaddr, ETH_ALEN); -} - -static void __inline__ fec_set_mii(struct net_device *dev, struct fec_enet_private *fep) -{ - extern uint _get_IMMR(void); - volatile immap_t *immap; - volatile fec_t *fecp; - - fecp = fep->hwp; - immap = (immap_t *)IMAP_ADDR; /* pointer to internal registers */ - - /* Configure all of port D for MII. - */ - immap->im_ioport.iop_pdpar = 0x1fff; - - /* Bits moved from Rev. D onward. - */ - if ((_get_IMMR() & 0xffff) < 0x0501) - immap->im_ioport.iop_pddir = 0x1c58; /* Pre rev. D */ - else - immap->im_ioport.iop_pddir = 0x1fff; /* Rev. D and later */ - - /* Set MII speed to 2.5 MHz - */ - fecp->fec_mii_speed = fep->phy_speed = - ((bd->bi_busfreq * 1000000) / 2500000) & 0x7e; -} - -static void __inline__ fec_enable_phy_intr(void) -{ - volatile fec_t *fecp; - - fecp = fep->hwp; - - /* Enable MII command finished interrupt - */ - fecp->fec_ivec = (FEC_INTERRUPT/2) << 29; -} - -static void __inline__ fec_disable_phy_intr(void) -{ -} - -static void __inline__ fec_phy_ack_intr(void) -{ -} - -static void __inline__ fec_localhw_setup(void) -{ - volatile fec_t *fecp; - - fecp = fep->hwp; - fecp->fec_r_hash = PKT_MAXBUF_SIZE; - /* Enable big endian and don't care about SDMA FC. - */ - fecp->fec_fun_code = 0x78000000; -} - -static void __inline__ fec_uncache(unsigned long addr) -{ - pte_t *pte; - pte = va_to_pte(mem_addr); - pte_val(*pte) |= _PAGE_NO_CACHE; - flush_tlb_page(init_mm.mmap, mem_addr); + dev->dev_addr[ETH_ALEN-1] = fec_mac_default[ETH_ALEN-1] + fep->index; } - #endif /* ------------------------------------------------------------------------- */ @@ -2055,7 +1479,9 @@ mii_discover_phy(uint mii_reg, struct net_device *dev) printk("FEC: No PHY device found.\n"); /* Disable external MII interface */ fecp->fec_mii_speed = fep->phy_speed = 0; +#ifdef HAVE_mii_link_interrupt fec_disable_phy_intr(); +#endif } } @@ -2237,12 +1663,12 @@ fec_set_mac_address(struct net_device *dev) } -/* Initialize the FEC Ethernet on 860T (or ColdFire 5272). - */ /* * XXX: We need to clean up on failure exits here. + * + * index is only used in legacy code */ -int __init fec_enet_init(struct net_device *dev) +int __init fec_enet_init(struct net_device *dev, int index) { struct fec_enet_private *fep = netdev_priv(dev); unsigned long mem_addr; @@ -2250,15 +1676,11 @@ int __init fec_enet_init(struct net_device *dev) cbd_t *cbd_base; volatile fec_t *fecp; int i, j; - static int index = 0; - - /* Only allow us to be probed once. */ - if (index >= FEC_MAX_PORTS) - return -ENXIO; /* Allocate memory for buffer descriptors. */ - mem_addr = __get_free_page(GFP_KERNEL); + mem_addr = (unsigned long)dma_alloc_coherent(NULL, PAGE_SIZE, + &fep->bd_dma, GFP_KERNEL); if (mem_addr == 0) { printk("FEC: allocate descriptor memory failed?\n"); return -ENOMEM; @@ -2269,7 +1691,7 @@ int __init fec_enet_init(struct net_device *dev) /* Create an Ethernet device instance. */ - fecp = (volatile fec_t *) fec_hw[index]; + fecp = (volatile fec_t *)dev->base_addr; fep->index = index; fep->hwp = fecp; @@ -2280,18 +1702,24 @@ int __init fec_enet_init(struct net_device *dev) fecp->fec_ecntrl = 1; udelay(10); - /* Set the Ethernet address. If using multiple Enets on the 8xx, - * this needs some work to get unique addresses. - * - * This is our default MAC address unless the user changes - * it via eth_mac_addr (our dev->set_mac_addr handler). - */ + /* Set the Ethernet address */ +#ifdef CONFIG_M5272 fec_get_mac(dev); +#else + { + unsigned long l; + l = fecp->fec_addr_low; + dev->dev_addr[0] = (unsigned char)((l & 0xFF000000) >> 24); + dev->dev_addr[1] = (unsigned char)((l & 0x00FF0000) >> 16); + dev->dev_addr[2] = (unsigned char)((l & 0x0000FF00) >> 8); + dev->dev_addr[3] = (unsigned char)((l & 0x000000FF) >> 0); + l = fecp->fec_addr_high; + dev->dev_addr[4] = (unsigned char)((l & 0xFF000000) >> 24); + dev->dev_addr[5] = (unsigned char)((l & 0x00FF0000) >> 16); + } +#endif cbd_base = (cbd_t *)mem_addr; - /* XXX: missing check for allocation failure */ - - fec_uncache(mem_addr); /* Set receive and transmit descriptor base. */ @@ -2313,8 +1741,6 @@ int __init fec_enet_init(struct net_device *dev) mem_addr = __get_free_page(GFP_KERNEL); /* XXX: missing check for allocation failure */ - fec_uncache(mem_addr); - /* Initialize the BD for every fragment in the page. */ for (j=0; j<FEC_ENET_RX_FRPPG; j++) { @@ -2357,13 +1783,13 @@ int __init fec_enet_init(struct net_device *dev) /* Set receive and transmit descriptor base. */ - fecp->fec_r_des_start = __pa((uint)(fep->rx_bd_base)); - fecp->fec_x_des_start = __pa((uint)(fep->tx_bd_base)); + fecp->fec_r_des_start = fep->bd_dma; + fecp->fec_x_des_start = (unsigned long)fep->bd_dma + sizeof(cbd_t) + * RX_RING_SIZE; - /* Install our interrupt handlers. This varies depending on - * the architecture. - */ - fec_request_intrs(dev); +#ifdef HAVE_mii_link_interrupt + fec_request_mii_intr(dev); +#endif fecp->fec_grp_hash_table_high = 0; fecp->fec_grp_hash_table_low = 0; @@ -2375,8 +1801,6 @@ int __init fec_enet_init(struct net_device *dev) fecp->fec_hash_table_low = 0; #endif - dev->base_addr = (unsigned long)fecp; - /* The FEC Ethernet specific entries in the device structure. */ dev->open = fec_enet_open; dev->hard_start_xmit = fec_enet_start_xmit; @@ -2390,7 +1814,16 @@ int __init fec_enet_init(struct net_device *dev) mii_free = mii_cmds; /* setup MII interface */ - fec_set_mii(dev, fep); + fecp->fec_r_cntrl = OPT_FRAME_SIZE | 0x04; + fecp->fec_x_cntrl = 0x00; + + /* + * Set MII speed to 2.5 MHz + */ + fep->phy_speed = ((((clk_get_rate(fep->clk) / 2 + 4999999) + / 2500000) / 2) & 0x3F) << 1; + fecp->fec_mii_speed = fep->phy_speed; + fec_restart(dev, 0); /* Clear and enable interrupts */ fecp->fec_ievent = 0xffc00000; @@ -2403,7 +1836,6 @@ int __init fec_enet_init(struct net_device *dev) fep->phy_addr = 0; mii_queue(dev, mk_mii_read(MII_REG_PHYIR1), mii_discover_phy); - index++; return 0; } @@ -2430,7 +1862,6 @@ fec_restart(struct net_device *dev, int duplex) /* Clear any outstanding interrupt. */ fecp->fec_ievent = 0xffc00000; - fec_enable_phy_intr(); /* Set station address. */ @@ -2445,12 +1876,11 @@ fec_restart(struct net_device *dev, int duplex) */ fecp->fec_r_buff_size = PKT_MAXBLR_SIZE; - fec_localhw_setup(); - /* Set receive and transmit descriptor base. */ - fecp->fec_r_des_start = __pa((uint)(fep->rx_bd_base)); - fecp->fec_x_des_start = __pa((uint)(fep->tx_bd_base)); + fecp->fec_r_des_start = fep->bd_dma; + fecp->fec_x_des_start = (unsigned long)fep->bd_dma + sizeof(cbd_t) + * RX_RING_SIZE; fep->dirty_tx = fep->cur_tx = fep->tx_bd_base; fep->cur_rx = fep->rx_bd_base; @@ -2552,39 +1982,171 @@ fec_stop(struct net_device *dev) /* Clear outstanding MII command interrupts. */ fecp->fec_ievent = FEC_ENET_MII; - fec_enable_phy_intr(); fecp->fec_imask = FEC_ENET_MII; fecp->fec_mii_speed = fep->phy_speed; } -static int __init fec_enet_module_init(void) +static int __devinit +fec_probe(struct platform_device *pdev) { - struct net_device *dev; - int i, err; - - printk("FEC ENET Version 0.2\n"); - - for (i = 0; (i < FEC_MAX_PORTS); i++) { - dev = alloc_etherdev(sizeof(struct fec_enet_private)); - if (!dev) - return -ENOMEM; - err = fec_enet_init(dev); - if (err) { - free_netdev(dev); - continue; + struct fec_enet_private *fep; + struct net_device *ndev; + int i, irq, ret = 0; + struct resource *r; + + r = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!r) + return -ENXIO; + + r = request_mem_region(r->start, resource_size(r), pdev->name); + if (!r) + return -EBUSY; + + /* Init network device */ + ndev = alloc_etherdev(sizeof(struct fec_enet_private)); + if (!ndev) + return -ENOMEM; + + SET_NETDEV_DEV(ndev, &pdev->dev); + + /* setup board info structure */ + fep = netdev_priv(ndev); + memset(fep, 0, sizeof(*fep)); + + ndev->base_addr = (unsigned long)ioremap(r->start, resource_size(r)); + + if (!ndev->base_addr) { + ret = -ENOMEM; + goto failed_ioremap; + } + + platform_set_drvdata(pdev, ndev); + + /* This device has up to three irqs on some platforms */ + for (i = 0; i < 3; i++) { + irq = platform_get_irq(pdev, i); + if (i && irq < 0) + break; + ret = request_irq(irq, fec_enet_interrupt, IRQF_DISABLED, pdev->name, ndev); + if (ret) { + while (i >= 0) { + irq = platform_get_irq(pdev, i); + free_irq(irq, ndev); + i--; + } + goto failed_irq; } - if (register_netdev(dev) != 0) { - /* XXX: missing cleanup here */ - free_netdev(dev); - return -EIO; + } + + fep->clk = clk_get(&pdev->dev, "fec_clk"); + if (IS_ERR(fep->clk)) { + ret = PTR_ERR(fep->clk); + goto failed_clk; + } + clk_enable(fep->clk); + + ret = fec_enet_init(ndev, 0); + if (ret) + goto failed_init; + + ret = register_netdev(ndev); + if (ret) + goto failed_register; + + return 0; + +failed_register: +failed_init: + clk_disable(fep->clk); + clk_put(fep->clk); +failed_clk: + for (i = 0; i < 3; i++) { + irq = platform_get_irq(pdev, i); + if (irq > 0) + free_irq(irq, ndev); + } +failed_irq: + iounmap((void __iomem *)ndev->base_addr); +failed_ioremap: + free_netdev(ndev); + + return ret; +} + +static int __devexit +fec_drv_remove(struct platform_device *pdev) +{ + struct net_device *ndev = platform_get_drvdata(pdev); + struct fec_enet_private *fep = netdev_priv(ndev); + + platform_set_drvdata(pdev, NULL); + + fec_stop(ndev); + clk_disable(fep->clk); + clk_put(fep->clk); + iounmap((void __iomem *)ndev->base_addr); + unregister_netdev(ndev); + free_netdev(ndev); + return 0; +} + +static int +fec_suspend(struct platform_device *dev, pm_message_t state) +{ + struct net_device *ndev = platform_get_drvdata(dev); + struct fec_enet_private *fep; + + if (ndev) { + fep = netdev_priv(ndev); + if (netif_running(ndev)) { + netif_device_detach(ndev); + fec_stop(ndev); } + } + return 0; +} - printk("%s: ethernet %pM\n", dev->name, dev->dev_addr); +static int +fec_resume(struct platform_device *dev) +{ + struct net_device *ndev = platform_get_drvdata(dev); + + if (ndev) { + if (netif_running(ndev)) { + fec_enet_init(ndev, 0); + netif_device_attach(ndev); + } } return 0; } +static struct platform_driver fec_driver = { + .driver = { + .name = "fec", + .owner = THIS_MODULE, + }, + .probe = fec_probe, + .remove = __devexit_p(fec_drv_remove), + .suspend = fec_suspend, + .resume = fec_resume, +}; + +static int __init +fec_enet_module_init(void) +{ + printk(KERN_INFO "FEC Ethernet Driver\n"); + + return platform_driver_register(&fec_driver); +} + +static void __exit +fec_enet_cleanup(void) +{ + platform_driver_unregister(&fec_driver); +} + +module_exit(fec_enet_cleanup); module_init(fec_enet_module_init); MODULE_LICENSE("GPL"); |
