#include <linux/bitops.h>
#include <linux/io.h>
#include <linux/irq.h>
+#include <linux/clk.h>
+#include <linux/platform_device.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
+#define FEC_ALIGNMENT 0x3
#endif
+#if defined CONFIG_M5272 || defined CONFIG_M527x || defined CONFIG_M523x \
+ || defined CONFIG_M528x || defined CONFIG_M532x || defined CONFIG_M520x
+#define FEC_LEGACY
+/*
+ * Define the fixed address of the FEC hardware.
+ */
#if defined(CONFIG_M5272)
#define HAVE_mii_link_interrupt
#endif
-/*
- * Define the fixed address of the FEC hardware.
- */
+#if defined(CONFIG_FEC2)
+#define FEC_MAX_PORTS 2
+#else
+#define FEC_MAX_PORTS 1
+#endif
+
static unsigned int fec_hw[] = {
#if defined(CONFIG_M5272)
(MCF_MBAR + 0x840),
#define FEC_FLASHMAC 0
#endif
+#endif /* FEC_LEGACY */
+
/* Forward declarations of some structures to support different PHYs
*/
* 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
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];
/* 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 */
* 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 *)skb->data, skb->len);
/* 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.
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
/* 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[] = {
/*
* Set MII speed to 2.5 MHz
*/
- fep->phy_speed = ((((MCF_CLK / 2) / (2500000 / 10)) + 5) / 10) * 2;
+ fep->phy_speed = (MCF_CLK / 3) / (2500000 * 2 ) * 2;
fecp->fec_mii_speed = fep->phy_speed;
fec_restart(dev, 0);
printk("FEC: No PHY device found.\n");
/* Disable external MII interface */
fecp->fec_mii_speed = fep->phy_speed = 0;
+#ifdef FREC_LEGACY
fec_disable_phy_intr();
+#endif
}
}
}
-/* 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;
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;
/* 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;
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 FEC_LEGACY
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 */
/* Set receive and transmit descriptor base.
*/
/* 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;
+#ifdef FEC_LEGACY
/* Install our interrupt handlers. This varies depending on
* the architecture.
*/
fec_request_intrs(dev);
+#endif
fecp->fec_grp_hash_table_high = 0;
fecp->fec_grp_hash_table_low = 0;
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;
mii_free = mii_cmds;
/* setup MII interface */
+#ifdef FEC_LEGACY
fec_set_mii(dev, fep);
+#else
+ 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);
+#endif
/* Clear and enable interrupts */
fecp->fec_ievent = 0xffc00000;
fep->phy_addr = 0;
mii_queue(dev, mk_mii_read(MII_REG_PHYIR1), mii_discover_phy);
- index++;
return 0;
}
/* 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;
fecp->fec_mii_speed = fep->phy_speed;
}
+#ifdef FEC_LEGACY
static int __init fec_enet_module_init(void)
{
struct net_device *dev;
dev = alloc_etherdev(sizeof(struct fec_enet_private));
if (!dev)
return -ENOMEM;
- err = fec_enet_init(dev);
+ dev->base_addr = (unsigned long)fec_hw[i];
+ err = fec_enet_init(dev, i);
if (err) {
free_netdev(dev);
continue;
}
return 0;
}
+#else
+
+static int __devinit
+fec_probe(struct platform_device *pdev)
+{
+ 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;
+ }
+ }
+
+ 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;
+}
+
+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);
+
+#endif /* FEC_LEGACY */
module_init(fec_enet_module_init);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff