#include <asm/arch/imx-regs.h>
#include <asm/io.h>
#include <asm/errno.h>
+#include <linux/compiler.h>
DECLARE_GLOBAL_DATA_PTR;
+/*
+ * Timeout the transfer after 5 mS. This is usually a bit more, since
+ * the code in the tightloops this timeout is used in adds some overhead.
+ */
+#define FEC_XFER_TIMEOUT 5000
+
#ifndef CONFIG_MII
#error "CONFIG_MII has to be defined!"
#endif
-#ifndef CONFIG_FEC_XCV_TYPE
-#define CONFIG_FEC_XCV_TYPE MII100
+#ifndef CONFIG_FEC_XCV_TYPE
+#define CONFIG_FEC_XCV_TYPE MII100
+#endif
+
+/*
+ * The i.MX28 operates with packets in big endian. We need to swap them before
+ * sending and after receiving.
+ */
+#ifdef CONFIG_MX28
+#define CONFIG_FEC_MXC_SWAP_PACKET
+#endif
+
+#define RXDESC_PER_CACHELINE (ARCH_DMA_MINALIGN/sizeof(struct fec_bd))
+
+/* Check various alignment issues at compile time */
+#if ((ARCH_DMA_MINALIGN < 16) || (ARCH_DMA_MINALIGN % 16 != 0))
+#error "ARCH_DMA_MINALIGN must be multiple of 16!"
+#endif
+
+#if ((PKTALIGN < ARCH_DMA_MINALIGN) || \
+ (PKTALIGN % ARCH_DMA_MINALIGN != 0))
+#error "PKTALIGN must be multiple of ARCH_DMA_MINALIGN!"
#endif
#undef DEBUG
uint8_t head[16]; /**< MAC header(6 + 6 + 2) + 2(aligned) */
};
+#ifdef CONFIG_FEC_MXC_SWAP_PACKET
+static void swap_packet(uint32_t *packet, int length)
+{
+ int i;
+
+ for (i = 0; i < DIV_ROUND_UP(length, 4); i++)
+ packet[i] = __swab32(packet[i]);
+}
+#endif
+
/*
* MII-interface related functions
*/
-static int fec_miiphy_read(const char *dev, uint8_t phyAddr, uint8_t regAddr,
- uint16_t *retVal)
+static int fec_mdio_read(struct ethernet_regs *eth, uint8_t phyAddr,
+ uint8_t regAddr)
{
- struct eth_device *edev = eth_get_dev_by_name(dev);
- struct fec_priv *fec = (struct fec_priv *)edev->priv;
- struct ethernet_regs *eth = fec->eth;
-
uint32_t reg; /* convenient holder for the PHY register */
uint32_t phy; /* convenient holder for the PHY */
uint32_t start;
+ int val;
/*
* reading from any PHY's register is done by properly
/*
* it's now safe to read the PHY's register
*/
- *retVal = readl(ð->mii_data);
- debug("fec_miiphy_read: phy: %02x reg:%02x val:%#x\n", phyAddr,
- regAddr, *retVal);
- return 0;
+ val = (unsigned short)readl(ð->mii_data);
+ debug("%s: phy: %02x reg:%02x val:%#x\n", __func__, phyAddr,
+ regAddr, val);
+ return val;
}
static void fec_mii_setspeed(struct fec_priv *fec)
*/
writel((((imx_get_fecclk() / 1000000) + 2) / 5) << 1,
&fec->eth->mii_speed);
- debug("fec_init: mii_speed %#lx\n",
- readl(&fec->eth->mii_speed));
+ debug("%s: mii_speed %08x\n", __func__, readl(&fec->eth->mii_speed));
}
-static int fec_miiphy_write(const char *dev, uint8_t phyAddr, uint8_t regAddr,
- uint16_t data)
-{
- struct eth_device *edev = eth_get_dev_by_name(dev);
- struct fec_priv *fec = (struct fec_priv *)edev->priv;
- struct ethernet_regs *eth = fec->eth;
+static int fec_mdio_write(struct ethernet_regs *eth, uint8_t phyAddr,
+ uint8_t regAddr, uint16_t data)
+{
uint32_t reg; /* convenient holder for the PHY register */
uint32_t phy; /* convenient holder for the PHY */
uint32_t start;
* clear MII interrupt bit
*/
writel(FEC_IEVENT_MII, ð->ievent);
- debug("fec_miiphy_write: phy: %02x reg:%02x val:%#x\n", phyAddr,
+ debug("%s: phy: %02x reg:%02x val:%#x\n", __func__, phyAddr,
regAddr, data);
return 0;
}
+int fec_phy_read(struct mii_dev *bus, int phyAddr, int dev_addr, int regAddr)
+{
+ return fec_mdio_read(bus->priv, phyAddr, regAddr);
+}
+
+int fec_phy_write(struct mii_dev *bus, int phyAddr, int dev_addr, int regAddr,
+ u16 data)
+{
+ return fec_mdio_write(bus->priv, phyAddr, regAddr, data);
+}
+
+#ifndef CONFIG_PHYLIB
static int miiphy_restart_aneg(struct eth_device *dev)
{
- struct fec_priv *fec = (struct fec_priv *)dev->priv;
int ret = 0;
+#if !defined(CONFIG_FEC_MXC_NO_ANEG)
+ struct fec_priv *fec = (struct fec_priv *)dev->priv;
+ struct ethernet_regs *eth = fec->bus->priv;
/*
* Wake up from sleep if necessary
* Reset PHY, then delay 300ns
*/
#ifdef CONFIG_MX27
- miiphy_write(dev->name, fec->phy_id, MII_DCOUNTER, 0x00FF);
+ fec_mdio_write(eth, fec->phy_id, MII_DCOUNTER, 0x00FF);
#endif
- miiphy_write(dev->name, fec->phy_id, MII_BMCR,
- BMCR_RESET);
+ fec_mdio_write(eth, fec->phy_id, MII_BMCR, BMCR_RESET);
udelay(1000);
/*
* Set the auto-negotiation advertisement register bits
*/
- miiphy_write(dev->name, fec->phy_id, MII_ADVERTISE,
+ fec_mdio_write(eth, fec->phy_id, MII_ADVERTISE,
LPA_100FULL | LPA_100HALF | LPA_10FULL |
LPA_10HALF | PHY_ANLPAR_PSB_802_3);
- miiphy_write(dev->name, fec->phy_id, MII_BMCR,
+ fec_mdio_write(eth, fec->phy_id, MII_BMCR,
BMCR_ANENABLE | BMCR_ANRESTART);
if (fec->mii_postcall)
ret = fec->mii_postcall(fec->phy_id);
+#endif
return ret;
}
static int miiphy_wait_aneg(struct eth_device *dev)
{
uint32_t start;
- uint16_t status;
+ int status;
struct fec_priv *fec = (struct fec_priv *)dev->priv;
+ struct ethernet_regs *eth = fec->bus->priv;
/*
* Wait for AN completion
return -1;
}
- if (miiphy_read(dev->name, fec->phy_id,
- MII_BMSR, &status)) {
- printf("%s: Autonegotiation failed. status: 0x%04x\n",
+ status = fec_mdio_read(eth, fec->phy_id, MII_BMSR);
+ if (status < 0) {
+ printf("%s: Autonegotiation failed. status: %d\n",
dev->name, status);
return -1;
}
return 0;
}
+#endif
+
static int fec_rx_task_enable(struct fec_priv *fec)
{
- writel(1 << 24, &fec->eth->r_des_active);
+ writel(FEC_R_DES_ACTIVE_RDAR, &fec->eth->r_des_active);
return 0;
}
static int fec_tx_task_enable(struct fec_priv *fec)
{
- writel(1 << 24, &fec->eth->x_des_active);
+ writel(FEC_X_DES_ACTIVE_TDAR, &fec->eth->x_des_active);
return 0;
}
* Initialize receive task's buffer descriptors
* @param[in] fec all we know about the device yet
* @param[in] count receive buffer count to be allocated
- * @param[in] size size of each receive buffer
+ * @param[in] dsize desired size of each receive buffer
* @return 0 on success
*
* For this task we need additional memory for the data buffers. And each
* data buffer requires some alignment. Thy must be aligned to a specific
- * boundary each (DB_DATA_ALIGNMENT).
+ * boundary each.
*/
-static int fec_rbd_init(struct fec_priv *fec, int count, int size)
+static int fec_rbd_init(struct fec_priv *fec, int count, int dsize)
{
- int ix;
- uint32_t p = 0;
-
- /* reserve data memory and consider alignment */
- if (fec->rdb_ptr == NULL)
- fec->rdb_ptr = malloc(size * count + DB_DATA_ALIGNMENT);
- p = (uint32_t)fec->rdb_ptr;
- if (!p) {
- puts("fec_mxc: not enough malloc memory\n");
- return -ENOMEM;
- }
- memset((void *)p, 0, size * count + DB_DATA_ALIGNMENT);
- p += DB_DATA_ALIGNMENT-1;
- p &= ~(DB_DATA_ALIGNMENT-1);
-
- for (ix = 0; ix < count; ix++) {
- writel(p, &fec->rbd_base[ix].data_pointer);
- p += size;
- writew(FEC_RBD_EMPTY, &fec->rbd_base[ix].status);
- writew(0, &fec->rbd_base[ix].data_length);
- }
+ uint32_t size;
+ int i;
+
/*
- * mark the last RBD to close the ring
+ * Allocate memory for the buffers. This allocation respects the
+ * alignment
*/
- writew(FEC_RBD_WRAP | FEC_RBD_EMPTY, &fec->rbd_base[ix - 1].status);
+ size = roundup(dsize, ARCH_DMA_MINALIGN);
+ for (i = 0; i < count; i++) {
+ uint32_t data_ptr = readl(&fec->rbd_base[i].data_pointer);
+ if (data_ptr == 0) {
+ uint8_t *data = memalign(ARCH_DMA_MINALIGN,
+ size);
+ if (!data) {
+ printf("%s: error allocating rxbuf %d\n",
+ __func__, i);
+ goto err;
+ }
+ writel((uint32_t)data, &fec->rbd_base[i].data_pointer);
+ } /* needs allocation */
+ writew(FEC_RBD_EMPTY, &fec->rbd_base[i].status);
+ writew(0, &fec->rbd_base[i].data_length);
+ }
+
+ /* Mark the last RBD to close the ring. */
+ writew(FEC_RBD_WRAP | FEC_RBD_EMPTY, &fec->rbd_base[i - 1].status);
fec->rbd_index = 0;
return 0;
+
+err:
+ for (; i >= 0; i--) {
+ uint32_t data_ptr = readl(&fec->rbd_base[i].data_pointer);
+ free((void *)data_ptr);
+ }
+
+ return -ENOMEM;
}
/**
*/
static void fec_tbd_init(struct fec_priv *fec)
{
+ unsigned addr = (unsigned)fec->tbd_base;
+ unsigned size = roundup(2 * sizeof(struct fec_bd),
+ ARCH_DMA_MINALIGN);
writew(0x0000, &fec->tbd_base[0].status);
writew(FEC_TBD_WRAP, &fec->tbd_base[1].status);
fec->tbd_index = 0;
+ flush_dcache_range(addr, addr+size);
}
/**
*/
static void fec_rbd_clean(int last, struct fec_bd *pRbd)
{
- /*
- * Reset buffer descriptor as empty
- */
+ unsigned short flags = FEC_RBD_EMPTY;
if (last)
- writew(FEC_RBD_WRAP | FEC_RBD_EMPTY, &pRbd->status);
- else
- writew(FEC_RBD_EMPTY, &pRbd->status);
- /*
- * no data in it
- */
+ flags |= FEC_RBD_WRAP;
+ writew(flags, &pRbd->status);
writew(0, &pRbd->data_length);
}
-static int fec_get_hwaddr(struct eth_device *dev, unsigned char *mac)
+static int fec_get_hwaddr(struct eth_device *dev, int dev_id,
+ unsigned char *mac)
{
- imx_get_mac_from_fuse(mac);
+ imx_get_mac_from_fuse(dev_id, mac);
return !is_valid_ether_addr(mac);
}
return 0;
}
+static void fec_eth_phy_config(struct eth_device *dev)
+{
+#ifdef CONFIG_PHYLIB
+ struct fec_priv *fec = (struct fec_priv *)dev->priv;
+ struct phy_device *phydev;
+
+ phydev = phy_connect(fec->bus, fec->phy_id, dev,
+ PHY_INTERFACE_MODE_RGMII);
+ if (phydev) {
+ fec->phydev = phydev;
+ phy_config(phydev);
+ }
+#endif
+}
+
+/*
+ * Do initial configuration of the FEC registers
+ */
+static void fec_reg_setup(struct fec_priv *fec)
+{
+ uint32_t rcntrl;
+
+ /*
+ * Set interrupt mask register
+ */
+ writel(0x00000000, &fec->eth->imask);
+
+ /*
+ * Clear FEC-Lite interrupt event register(IEVENT)
+ */
+ writel(0xffffffff, &fec->eth->ievent);
+
+
+ /*
+ * Set FEC-Lite receive control register(R_CNTRL):
+ */
+
+ /* Start with frame length = 1518, common for all modes. */
+ rcntrl = PKTSIZE << FEC_RCNTRL_MAX_FL_SHIFT;
+ if (fec->xcv_type != SEVENWIRE) /* xMII modes */
+ rcntrl |= FEC_RCNTRL_FCE | FEC_RCNTRL_MII_MODE;
+ if (fec->xcv_type == RGMII)
+ rcntrl |= FEC_RCNTRL_RGMII;
+ else if (fec->xcv_type == RMII)
+ rcntrl |= FEC_RCNTRL_RMII;
+
+ writel(rcntrl, &fec->eth->r_cntrl);
+}
+
/**
* Start the FEC engine
* @param[in] dev Our device to handle
static int fec_open(struct eth_device *edev)
{
struct fec_priv *fec = (struct fec_priv *)edev->priv;
+ int speed;
+ uint32_t addr, size;
+ int i;
debug("fec_open: fec_open(dev)\n");
/* full-duplex, heartbeat disabled */
writel(1 << 2, &fec->eth->x_cntrl);
fec->rbd_index = 0;
+ /* Invalidate all descriptors */
+ for (i = 0; i < FEC_RBD_NUM - 1; i++)
+ fec_rbd_clean(0, &fec->rbd_base[i]);
+ fec_rbd_clean(1, &fec->rbd_base[i]);
+
+ /* Flush the descriptors into RAM */
+ size = roundup(FEC_RBD_NUM * sizeof(struct fec_bd),
+ ARCH_DMA_MINALIGN);
+ addr = (uint32_t)fec->rbd_base;
+ flush_dcache_range(addr, addr + size);
+
+#ifdef FEC_QUIRK_ENET_MAC
+ /* Enable ENET HW endian SWAP */
+ writel(readl(&fec->eth->ecntrl) | FEC_ECNTRL_DBSWAP,
+ &fec->eth->ecntrl);
+ /* Enable ENET store and forward mode */
+ writel(readl(&fec->eth->x_wmrk) | FEC_X_WMRK_STRFWD,
+ &fec->eth->x_wmrk);
+#endif
/*
* Enable FEC-Lite controller
*/
}
#endif
+#ifdef CONFIG_PHYLIB
+ if (!fec->phydev)
+ fec_eth_phy_config(edev);
+ if (fec->phydev) {
+ /* Start up the PHY */
+ int ret = phy_startup(fec->phydev);
+
+ if (ret) {
+ printf("Could not initialize PHY %s\n",
+ fec->phydev->dev->name);
+ return ret;
+ }
+ speed = fec->phydev->speed;
+ } else {
+ speed = _100BASET;
+ }
+#else
miiphy_wait_aneg(edev);
- miiphy_speed(edev->name, fec->phy_id);
+ speed = miiphy_speed(edev->name, fec->phy_id);
miiphy_duplex(edev->name, fec->phy_id);
+#endif
+
+#ifdef FEC_QUIRK_ENET_MAC
+ {
+ u32 ecr = readl(&fec->eth->ecntrl) & ~FEC_ECNTRL_SPEED;
+ u32 rcr = (readl(&fec->eth->r_cntrl) &
+ ~(FEC_RCNTRL_RMII | FEC_RCNTRL_RMII_10T)) |
+ FEC_RCNTRL_RGMII | FEC_RCNTRL_MII_MODE;
+ if (speed == _1000BASET)
+ ecr |= FEC_ECNTRL_SPEED;
+ else if (speed != _100BASET)
+ rcr |= FEC_RCNTRL_RMII_10T;
+ writel(ecr, &fec->eth->ecntrl);
+ writel(rcr, &fec->eth->r_cntrl);
+ }
+#endif
+ debug("%s:Speed=%i\n", __func__, speed);
/*
* Enable SmartDMA receive task
static int fec_init(struct eth_device *dev, bd_t* bd)
{
- uint32_t base;
struct fec_priv *fec = (struct fec_priv *)dev->priv;
uint32_t mib_ptr = (uint32_t)&fec->eth->rmon_t_drop;
- uint32_t rcntrl;
- int i;
+ uint32_t size;
+ int i, ret;
/* Initialize MAC address */
fec_set_hwaddr(dev);
/*
- * reserve memory for both buffer descriptor chains at once
- * Datasheet forces the startaddress of each chain is 16 byte
- * aligned
+ * Allocate transmit descriptors, there are two in total. This
+ * allocation respects cache alignment.
*/
- if (fec->base_ptr == NULL)
- fec->base_ptr = malloc((2 + FEC_RBD_NUM) *
- sizeof(struct fec_bd) + DB_ALIGNMENT);
- base = (uint32_t)fec->base_ptr;
- if (!base) {
- puts("fec_mxc: not enough malloc memory\n");
- return -ENOMEM;
+ if (!fec->tbd_base) {
+ size = roundup(2 * sizeof(struct fec_bd),
+ ARCH_DMA_MINALIGN);
+ fec->tbd_base = memalign(ARCH_DMA_MINALIGN, size);
+ if (!fec->tbd_base) {
+ ret = -ENOMEM;
+ goto err1;
+ }
+ memset(fec->tbd_base, 0, size);
+ fec_tbd_init(fec);
+ flush_dcache_range((unsigned)fec->tbd_base, size);
}
- memset((void *)base, 0, (2 + FEC_RBD_NUM) *
- sizeof(struct fec_bd) + DB_ALIGNMENT);
- base += (DB_ALIGNMENT-1);
- base &= ~(DB_ALIGNMENT-1);
-
- fec->rbd_base = (struct fec_bd *)base;
-
- base += FEC_RBD_NUM * sizeof(struct fec_bd);
-
- fec->tbd_base = (struct fec_bd *)base;
-
- /*
- * Set interrupt mask register
- */
- writel(0x00000000, &fec->eth->imask);
-
- /*
- * Clear FEC-Lite interrupt event register(IEVENT)
- */
- writel(0xffffffff, &fec->eth->ievent);
-
/*
- * Set FEC-Lite receive control register(R_CNTRL):
+ * Allocate receive descriptors. This allocation respects cache
+ * alignment.
*/
+ if (!fec->rbd_base) {
+ size = roundup(FEC_RBD_NUM * sizeof(struct fec_bd),
+ ARCH_DMA_MINALIGN);
+ fec->rbd_base = memalign(ARCH_DMA_MINALIGN, size);
+ if (!fec->rbd_base) {
+ ret = -ENOMEM;
+ goto err2;
+ }
+ memset(fec->rbd_base, 0, size);
+ /*
+ * Initialize RxBD ring
+ */
+ if (fec_rbd_init(fec, FEC_RBD_NUM, FEC_MAX_PKT_SIZE) < 0) {
+ ret = -ENOMEM;
+ goto err3;
+ }
+ flush_dcache_range((unsigned)fec->rbd_base,
+ (unsigned)fec->rbd_base + size);
+ }
- /* Start with frame length = 1518, common for all modes. */
- rcntrl = PKTSIZE << FEC_RCNTRL_MAX_FL_SHIFT;
- if (fec->xcv_type == SEVENWIRE)
- rcntrl |= FEC_RCNTRL_FCE;
- else if (fec->xcv_type == RMII)
- rcntrl |= FEC_RCNTRL_RMII;
- else /* MII mode */
- rcntrl |= FEC_RCNTRL_FCE | FEC_RCNTRL_MII_MODE;
-
- writel(rcntrl, &fec->eth->r_cntrl);
+ fec_reg_setup(fec);
- if (fec->xcv_type == MII10 || fec->xcv_type == MII100)
+ if (fec->xcv_type != SEVENWIRE)
fec_mii_setspeed(fec);
/*
writel((uint32_t)fec->tbd_base, &fec->eth->etdsr);
writel((uint32_t)fec->rbd_base, &fec->eth->erdsr);
- /*
- * Initialize RxBD/TxBD rings
- */
- if (fec_rbd_init(fec, FEC_RBD_NUM, FEC_MAX_PKT_SIZE) < 0) {
- free(fec->base_ptr);
- fec->base_ptr = NULL;
- return -ENOMEM;
- }
- fec_tbd_init(fec);
-
-
+#ifndef CONFIG_PHYLIB
if (fec->xcv_type != SEVENWIRE)
miiphy_restart_aneg(dev);
-
+#endif
fec_open(dev);
return 0;
+
+err3:
+ free(fec->rbd_base);
+err2:
+ free(fec->tbd_base);
+err1:
+ return ret;
}
/**
* @param[in] length Data count in bytes
* @return 0 on success
*/
-static int fec_send(struct eth_device *dev, volatile void* packet, int length)
+static int fec_send(struct eth_device *dev, void *packet, int length)
{
unsigned int status;
+ uint32_t size, end;
+ uint32_t addr;
+ int timeout = FEC_XFER_TIMEOUT;
+ int ret = 0;
/*
* This routine transmits one frame. This routine only accepts
}
/*
- * Setup the transmit buffer
- * Note: We are always using the first buffer for transmission,
- * the second will be empty and only used to stop the DMA engine
+ * Setup the transmit buffer. We are always using the first buffer for
+ * transmission, the second will be empty and only used to stop the DMA
+ * engine. We also flush the packet to RAM here to avoid cache trouble.
*/
+#ifdef CONFIG_FEC_MXC_SWAP_PACKET
+ swap_packet((uint32_t *)packet, length);
+#endif
+
+ addr = (uint32_t)packet;
+ end = roundup(addr + length, ARCH_DMA_MINALIGN);
+ addr &= ~(ARCH_DMA_MINALIGN - 1);
+ flush_dcache_range(addr, end);
+
writew(length, &fec->tbd_base[fec->tbd_index].data_length);
- writel((uint32_t)packet, &fec->tbd_base[fec->tbd_index].data_pointer);
+ writel(addr, &fec->tbd_base[fec->tbd_index].data_pointer);
+
/*
* update BD's status now
* This block:
status |= FEC_TBD_LAST | FEC_TBD_TC | FEC_TBD_READY;
writew(status, &fec->tbd_base[fec->tbd_index].status);
+ /*
+ * Flush data cache. This code flushes both TX descriptors to RAM.
+ * After this code, the descriptors will be safely in RAM and we
+ * can start DMA.
+ */
+ size = roundup(2 * sizeof(struct fec_bd), ARCH_DMA_MINALIGN);
+ addr = (uint32_t)fec->tbd_base;
+ flush_dcache_range(addr, addr + size);
+
/*
* Enable SmartDMA transmit task
*/
fec_tx_task_enable(fec);
/*
- * wait until frame is sent .
+ * Wait until frame is sent. On each turn of the wait cycle, we must
+ * invalidate data cache to see what's really in RAM. Also, we need
+ * barrier here.
*/
- while (readw(&fec->tbd_base[fec->tbd_index].status) & FEC_TBD_READY) {
- udelay(1);
+ while (--timeout) {
+ if (!(readl(&fec->eth->x_des_active) & FEC_X_DES_ACTIVE_TDAR))
+ break;
}
- debug("fec_send: status 0x%x index %d\n",
+
+ if (!timeout)
+ ret = -EINVAL;
+
+ invalidate_dcache_range(addr, addr + size);
+ if (readw(&fec->tbd_base[fec->tbd_index].status) & FEC_TBD_READY)
+ ret = -EINVAL;
+
+ debug("fec_send: status 0x%x index %d ret %i\n",
readw(&fec->tbd_base[fec->tbd_index].status),
- fec->tbd_index);
+ fec->tbd_index, ret);
/* for next transmission use the other buffer */
if (fec->tbd_index)
fec->tbd_index = 0;
else
fec->tbd_index = 1;
- return 0;
+ return ret;
}
/**
int frame_length, len = 0;
struct nbuf *frame;
uint16_t bd_status;
- uchar buff[FEC_MAX_PKT_SIZE];
+ uint32_t addr, size, end;
+ int i;
+ uchar buff[FEC_MAX_PKT_SIZE] __aligned(ARCH_DMA_MINALIGN);
/*
* Check if any critical events have happened
*/
ievent = readl(&fec->eth->ievent);
writel(ievent, &fec->eth->ievent);
- debug("fec_recv: ievent 0x%x\n", ievent);
+ debug("fec_recv: ievent 0x%lx\n", ievent);
if (ievent & FEC_IEVENT_BABR) {
fec_halt(dev);
fec_init(dev, fec->bd);
}
/*
- * ensure reading the right buffer status
+ * Read the buffer status. Before the status can be read, the data cache
+ * must be invalidated, because the data in RAM might have been changed
+ * by DMA. The descriptors are properly aligned to cachelines so there's
+ * no need to worry they'd overlap.
+ *
+ * WARNING: By invalidating the descriptor here, we also invalidate
+ * the descriptors surrounding this one. Therefore we can NOT change the
+ * contents of this descriptor nor the surrounding ones. The problem is
+ * that in order to mark the descriptor as processed, we need to change
+ * the descriptor. The solution is to mark the whole cache line when all
+ * descriptors in the cache line are processed.
*/
+ addr = (uint32_t)rbd;
+ addr &= ~(ARCH_DMA_MINALIGN - 1);
+ size = roundup(sizeof(struct fec_bd), ARCH_DMA_MINALIGN);
+ invalidate_dcache_range(addr, addr + size);
+
bd_status = readw(&rbd->status);
debug("fec_recv: status 0x%x\n", bd_status);
*/
frame = (struct nbuf *)readl(&rbd->data_pointer);
frame_length = readw(&rbd->data_length) - 4;
+ /*
+ * Invalidate data cache over the buffer
+ */
+ addr = (uint32_t)frame;
+ end = roundup(addr + frame_length, ARCH_DMA_MINALIGN);
+ addr &= ~(ARCH_DMA_MINALIGN - 1);
+ invalidate_dcache_range(addr, end);
+
/*
* Fill the buffer and pass it to upper layers
*/
+#ifdef CONFIG_FEC_MXC_SWAP_PACKET
+ swap_packet((uint32_t *)frame->data, frame_length);
+#endif
memcpy(buff, frame->data, frame_length);
NetReceive(buff, frame_length);
len = frame_length;
(ulong)rbd->data_pointer,
bd_status);
}
+
/*
- * free the current buffer, restart the engine
- * and move forward to the next buffer
+ * Free the current buffer, restart the engine and move forward
+ * to the next buffer. Here we check if the whole cacheline of
+ * descriptors was already processed and if so, we mark it free
+ * as whole.
*/
- fec_rbd_clean(fec->rbd_index == (FEC_RBD_NUM - 1) ? 1 : 0, rbd);
+ size = RXDESC_PER_CACHELINE - 1;
+ if ((fec->rbd_index & size) == size) {
+ i = fec->rbd_index - size;
+ addr = (uint32_t)&fec->rbd_base[i];
+ for (; i <= fec->rbd_index ; i++) {
+ fec_rbd_clean(i == (FEC_RBD_NUM - 1),
+ &fec->rbd_base[i]);
+ }
+ flush_dcache_range(addr,
+ addr + ARCH_DMA_MINALIGN);
+ }
+
fec_rx_task_enable(fec);
fec->rbd_index = (fec->rbd_index + 1) % FEC_RBD_NUM;
}
{
struct eth_device *edev;
struct fec_priv *fec;
+ struct mii_dev *bus;
unsigned char ethaddr[6];
uint32_t start;
int ret = 0;
udelay(10);
}
- /*
- * Set interrupt mask register
- */
- writel(0x00000000, &fec->eth->imask);
-
- /*
- * Clear FEC-Lite interrupt event register(IEVENT)
- */
- writel(0xffffffff, &fec->eth->ievent);
-
- /*
- * Set FEC-Lite receive control register(R_CNTRL):
- */
- /*
- * Frame length=1518; MII mode;
- */
- writel((PKTSIZE << FEC_RCNTRL_MAX_FL_SHIFT) | FEC_RCNTRL_FCE |
- FEC_RCNTRL_MII_MODE, &fec->eth->r_cntrl);
+ fec_reg_setup(fec);
fec_mii_setspeed(fec);
if (dev_id == -1) {
}
fec->phy_id = phy_id;
- miiphy_register(edev->name, fec_miiphy_read, fec_miiphy_write);
-
+ bus = mdio_alloc();
+ if (!bus) {
+ printf("mdio_alloc failed\n");
+ ret = -ENOMEM;
+ goto err3;
+ }
+ bus->read = fec_phy_read;
+ bus->write = fec_phy_write;
+ sprintf(bus->name, edev->name);
+#ifdef CONFIG_MX28
+ /*
+ * The i.MX28 has two ethernet interfaces, but they are not equal.
+ * Only the first one can access the MDIO bus.
+ */
+ bus->priv = (struct ethernet_regs *)MXS_ENET0_BASE;
+#else
+ bus->priv = fec->eth;
+#endif
+ ret = mdio_register(bus);
+ if (ret) {
+ printf("mdio_register failed\n");
+ free(bus);
+ ret = -ENOMEM;
+ goto err3;
+ }
+ fec->bus = bus;
eth_register(edev);
- if (fec_get_hwaddr(edev, ethaddr) == 0) {
- debug("got MAC address from fuse: %pM\n", ethaddr);
+ if (fec_get_hwaddr(edev, dev_id, ethaddr) == 0) {
+ debug("got MAC%d address from fuse: %pM\n", dev_id, ethaddr);
memcpy(edev->enetaddr, ethaddr, 6);
}
-
+ /* Configure phy */
+ fec_eth_phy_config(edev);
return ret;
err3:
return ret;
}
-#ifndef CONFIG_FEC_MXC_MULTI
+#ifndef CONFIG_FEC_MXC_MULTI
int fecmxc_initialize(bd_t *bd)
{
int lout = 1;
return lout;
}
+#ifndef CONFIG_PHYLIB
int fecmxc_register_mii_postcall(struct eth_device *dev, int (*cb)(int))
{
struct fec_priv *fec = (struct fec_priv *)dev->priv;
fec->mii_postcall = cb;
return 0;
}
+#endif
projects / karo-tx-uboot.git / blobdiff