-/* $Id: sunqe.c,v 1.55 2002/01/15 06:48:55 davem Exp $
- * sunqe.c: Sparc QuadEthernet 10baseT SBUS card driver.
+/* sunqe.c: Sparc QuadEthernet 10baseT SBUS card driver.
* Once again I am out to prove that every ethernet
* controller out there can be most efficiently programmed
* if you make it look like a LANCE.
*
- * Copyright (C) 1996, 1999, 2003 David S. Miller (davem@redhat.com)
+ * Copyright (C) 1996, 1999, 2003, 2006 David S. Miller (davem@davemloft.net)
*/
#include <linux/module.h>
#include "sunqe.h"
#define DRV_NAME "sunqe"
-#define DRV_VERSION "3.0"
-#define DRV_RELDATE "8/24/03"
-#define DRV_AUTHOR "David S. Miller (davem@redhat.com)"
+#define DRV_VERSION "4.0"
+#define DRV_RELDATE "June 23, 2006"
+#define DRV_AUTHOR "David S. Miller (davem@davemloft.net)"
static char version[] =
DRV_NAME ".c:v" DRV_VERSION " " DRV_RELDATE " " DRV_AUTHOR "\n";
qecp->gregs + GLOB_RSIZE);
}
-/* Four QE's per QEC card. */
-static int __init qec_ether_init(struct net_device *dev, struct sbus_dev *sdev)
+static u8 __init qec_get_burst(struct device_node *dp)
{
- static unsigned version_printed;
- struct net_device *qe_devs[4];
- struct sunqe *qeps[4];
- struct sbus_dev *qesdevs[4];
- struct sbus_dev *child;
- struct sunqec *qecp = NULL;
u8 bsizes, bsizes_more;
- int i, j, res = -ENOMEM;
- for (i = 0; i < 4; i++) {
- qe_devs[i] = alloc_etherdev(sizeof(struct sunqe));
- if (!qe_devs[i])
- goto out;
- }
+ /* Find and set the burst sizes for the QEC, since it
+ * does the actual dma for all 4 channels.
+ */
+ bsizes = of_getintprop_default(dp, "burst-sizes", 0xff);
+ bsizes &= 0xff;
+ bsizes_more = of_getintprop_default(dp->parent, "burst-sizes", 0xff);
- if (version_printed++ == 0)
- printk(KERN_INFO "%s", version);
+ if (bsizes_more != 0xff)
+ bsizes &= bsizes_more;
+ if (bsizes == 0xff || (bsizes & DMA_BURST16) == 0 ||
+ (bsizes & DMA_BURST32)==0)
+ bsizes = (DMA_BURST32 - 1);
- for (i = 0; i < 4; i++) {
- qeps[i] = (struct sunqe *) qe_devs[i]->priv;
- for (j = 0; j < 6; j++)
- qe_devs[i]->dev_addr[j] = idprom->id_ethaddr[j];
- qeps[i]->channel = i;
- spin_lock_init(&qeps[i]->lock);
- }
+ return bsizes;
+}
- qecp = kmalloc(sizeof(struct sunqec), GFP_KERNEL);
- if (qecp == NULL)
- goto out1;
- qecp->qec_sdev = sdev;
+static struct sunqec * __init get_qec(struct sbus_dev *child_sdev)
+{
+ struct sbus_dev *qec_sdev = child_sdev->parent;
+ struct sunqec *qecp;
- for (i = 0; i < 4; i++) {
- qecp->qes[i] = qeps[i];
- qeps[i]->dev = qe_devs[i];
- qeps[i]->parent = qecp;
+ for (qecp = root_qec_dev; qecp; qecp = qecp->next_module) {
+ if (qecp->qec_sdev == qec_sdev)
+ break;
}
+ if (!qecp) {
+ qecp = kzalloc(sizeof(struct sunqec), GFP_KERNEL);
+ if (qecp) {
+ u32 ctrl;
+
+ qecp->qec_sdev = qec_sdev;
+ qecp->gregs = sbus_ioremap(&qec_sdev->resource[0], 0,
+ GLOB_REG_SIZE,
+ "QEC Global Registers");
+ if (!qecp->gregs)
+ goto fail;
+
+ /* Make sure the QEC is in MACE mode. */
+ ctrl = sbus_readl(qecp->gregs + GLOB_CTRL);
+ ctrl &= 0xf0000000;
+ if (ctrl != GLOB_CTRL_MMODE) {
+ printk(KERN_ERR "qec: Not in MACE mode!\n");
+ goto fail;
+ }
- res = -ENODEV;
+ if (qec_global_reset(qecp->gregs))
+ goto fail;
- for (i = 0, child = sdev->child; i < 4; i++, child = child->next) {
- /* Link in channel */
- j = prom_getintdefault(child->prom_node, "channel#", -1);
- if (j == -1)
- goto out2;
- qesdevs[j] = child;
- }
+ qecp->qec_bursts = qec_get_burst(qec_sdev->ofdev.node);
- for (i = 0; i < 4; i++)
- qeps[i]->qe_sdev = qesdevs[i];
+ qec_init_once(qecp, qec_sdev);
- /* Now map in the registers, QEC globals first. */
- qecp->gregs = sbus_ioremap(&sdev->resource[0], 0,
- GLOB_REG_SIZE, "QEC Global Registers");
- if (!qecp->gregs) {
- printk(KERN_ERR "QuadEther: Cannot map QEC global registers.\n");
- goto out2;
- }
+ if (request_irq(qec_sdev->irqs[0], &qec_interrupt,
+ SA_SHIRQ, "qec", (void *) qecp)) {
+ printk(KERN_ERR "qec: Can't register irq.\n");
+ goto fail;
+ }
- /* Make sure the QEC is in MACE mode. */
- if ((sbus_readl(qecp->gregs + GLOB_CTRL) & 0xf0000000) != GLOB_CTRL_MMODE) {
- printk(KERN_ERR "QuadEther: AIEEE, QEC is not in MACE mode!\n");
- goto out3;
+ qecp->next_module = root_qec_dev;
+ root_qec_dev = qecp;
+ }
}
- /* Reset the QEC. */
- if (qec_global_reset(qecp->gregs))
- goto out3;
+ return qecp;
- /* Find and set the burst sizes for the QEC, since it does
- * the actual dma for all 4 channels.
- */
- bsizes = prom_getintdefault(sdev->prom_node, "burst-sizes", 0xff);
- bsizes &= 0xff;
- bsizes_more = prom_getintdefault(sdev->bus->prom_node, "burst-sizes", 0xff);
+fail:
+ if (qecp->gregs)
+ sbus_iounmap(qecp->gregs, GLOB_REG_SIZE);
+ kfree(qecp);
+ return NULL;
+}
- if (bsizes_more != 0xff)
- bsizes &= bsizes_more;
- if (bsizes == 0xff || (bsizes & DMA_BURST16) == 0 ||
- (bsizes & DMA_BURST32)==0)
- bsizes = (DMA_BURST32 - 1);
+static int __init qec_ether_init(struct sbus_dev *sdev)
+{
+ static unsigned version_printed;
+ struct net_device *dev;
+ struct sunqe *qe;
+ struct sunqec *qecp;
+ int i, res;
- qecp->qec_bursts = bsizes;
+ if (version_printed++ == 0)
+ printk(KERN_INFO "%s", version);
- /* Perform one time QEC initialization, we never touch the QEC
- * globals again after this.
- */
- qec_init_once(qecp, sdev);
-
- for (i = 0; i < 4; i++) {
- struct sunqe *qe = qeps[i];
- /* Map in QEC per-channel control registers. */
- qe->qcregs = sbus_ioremap(&qe->qe_sdev->resource[0], 0,
- CREG_REG_SIZE, "QEC Channel Registers");
- if (!qe->qcregs) {
- printk(KERN_ERR "QuadEther: Cannot map QE %d's channel registers.\n", i);
- goto out4;
- }
+ dev = alloc_etherdev(sizeof(struct sunqe));
+ if (!dev)
+ return -ENOMEM;
- /* Map in per-channel AMD MACE registers. */
- qe->mregs = sbus_ioremap(&qe->qe_sdev->resource[1], 0,
- MREGS_REG_SIZE, "QE MACE Registers");
- if (!qe->mregs) {
- printk(KERN_ERR "QuadEther: Cannot map QE %d's MACE registers.\n", i);
- goto out4;
- }
+ qe = netdev_priv(dev);
- qe->qe_block = sbus_alloc_consistent(qe->qe_sdev,
- PAGE_SIZE,
- &qe->qblock_dvma);
- qe->buffers = sbus_alloc_consistent(qe->qe_sdev,
- sizeof(struct sunqe_buffers),
- &qe->buffers_dvma);
- if (qe->qe_block == NULL || qe->qblock_dvma == 0 ||
- qe->buffers == NULL || qe->buffers_dvma == 0) {
- goto out4;
+ i = of_getintprop_default(sdev->ofdev.node, "channel#", -1);
+ if (i == -1) {
+ struct sbus_dev *td = sdev->parent->child;
+ i = 0;
+ while (td != sdev) {
+ td = td->next;
+ i++;
}
-
- /* Stop this QE. */
- qe_stop(qe);
}
+ qe->channel = i;
+ spin_lock_init(&qe->lock);
+
+ res = -ENODEV;
+ qecp = get_qec(sdev);
+ if (!qecp)
+ goto fail;
- for (i = 0; i < 4; i++) {
- SET_MODULE_OWNER(qe_devs[i]);
- qe_devs[i]->open = qe_open;
- qe_devs[i]->stop = qe_close;
- qe_devs[i]->hard_start_xmit = qe_start_xmit;
- qe_devs[i]->get_stats = qe_get_stats;
- qe_devs[i]->set_multicast_list = qe_set_multicast;
- qe_devs[i]->tx_timeout = qe_tx_timeout;
- qe_devs[i]->watchdog_timeo = 5*HZ;
- qe_devs[i]->irq = sdev->irqs[0];
- qe_devs[i]->dma = 0;
- qe_devs[i]->ethtool_ops = &qe_ethtool_ops;
- }
+ qecp->qes[qe->channel] = qe;
+ qe->dev = dev;
+ qe->parent = qecp;
+ qe->qe_sdev = sdev;
- /* QEC receives interrupts from each QE, then it sends the actual
- * IRQ to the cpu itself. Since QEC is the single point of
- * interrupt for all QE channels we register the IRQ handler
- * for it now.
- */
- if (request_irq(sdev->irqs[0], &qec_interrupt,
- SA_SHIRQ, "QuadEther", (void *) qecp)) {
- printk(KERN_ERR "QuadEther: Can't register QEC master irq handler.\n");
- res = -EAGAIN;
- goto out4;
+ res = -ENOMEM;
+ qe->qcregs = sbus_ioremap(&qe->qe_sdev->resource[0], 0,
+ CREG_REG_SIZE, "QEC Channel Registers");
+ if (!qe->qcregs) {
+ printk(KERN_ERR "qe: Cannot map channel registers.\n");
+ goto fail;
}
- for (i = 0; i < 4; i++) {
- if (register_netdev(qe_devs[i]) != 0)
- goto out5;
+ qe->mregs = sbus_ioremap(&qe->qe_sdev->resource[1], 0,
+ MREGS_REG_SIZE, "QE MACE Registers");
+ if (!qe->mregs) {
+ printk(KERN_ERR "qe: Cannot map MACE registers.\n");
+ goto fail;
}
- /* Report the QE channels. */
- for (i = 0; i < 4; i++) {
- printk(KERN_INFO "%s: QuadEthernet channel[%d] ", qe_devs[i]->name, i);
- for (j = 0; j < 6; j++)
- printk ("%2.2x%c",
- qe_devs[i]->dev_addr[j],
- j == 5 ? ' ': ':');
- printk("\n");
- }
+ qe->qe_block = sbus_alloc_consistent(qe->qe_sdev,
+ PAGE_SIZE,
+ &qe->qblock_dvma);
+ qe->buffers = sbus_alloc_consistent(qe->qe_sdev,
+ sizeof(struct sunqe_buffers),
+ &qe->buffers_dvma);
+ if (qe->qe_block == NULL || qe->qblock_dvma == 0 ||
+ qe->buffers == NULL || qe->buffers_dvma == 0)
+ goto fail;
+
+ /* Stop this QE. */
+ qe_stop(qe);
+
+ SET_MODULE_OWNER(dev);
+ SET_NETDEV_DEV(dev, &sdev->ofdev.dev);
+
+ dev->open = qe_open;
+ dev->stop = qe_close;
+ dev->hard_start_xmit = qe_start_xmit;
+ dev->get_stats = qe_get_stats;
+ dev->set_multicast_list = qe_set_multicast;
+ dev->tx_timeout = qe_tx_timeout;
+ dev->watchdog_timeo = 5*HZ;
+ dev->irq = sdev->irqs[0];
+ dev->dma = 0;
+ dev->ethtool_ops = &qe_ethtool_ops;
+
+ res = register_netdev(dev);
+ if (res)
+ goto fail;
+
+ dev_set_drvdata(&sdev->ofdev.dev, qe);
+
+ printk(KERN_INFO "%s: qe channel[%d] ", dev->name, qe->channel);
+ for (i = 0; i < 6; i++)
+ printk ("%2.2x%c",
+ dev->dev_addr[i],
+ i == 5 ? ' ': ':');
+ printk("\n");
- /* We are home free at this point, link the qe's into
- * the master list for later driver exit.
- */
- qecp->next_module = root_qec_dev;
- root_qec_dev = qecp;
return 0;
-out5:
- while (i--)
- unregister_netdev(qe_devs[i]);
- free_irq(sdev->irqs[0], (void *)qecp);
-out4:
- for (i = 0; i < 4; i++) {
- struct sunqe *qe = (struct sunqe *)qe_devs[i]->priv;
-
- if (qe->qcregs)
- sbus_iounmap(qe->qcregs, CREG_REG_SIZE);
- if (qe->mregs)
- sbus_iounmap(qe->mregs, MREGS_REG_SIZE);
- if (qe->qe_block)
- sbus_free_consistent(qe->qe_sdev,
- PAGE_SIZE,
- qe->qe_block,
- qe->qblock_dvma);
- if (qe->buffers)
- sbus_free_consistent(qe->qe_sdev,
- sizeof(struct sunqe_buffers),
- qe->buffers,
- qe->buffers_dvma);
- }
-out3:
- sbus_iounmap(qecp->gregs, GLOB_REG_SIZE);
-out2:
- kfree(qecp);
-out1:
- i = 4;
-out:
- while (i--)
- free_netdev(qe_devs[i]);
+fail:
+ if (qe->qcregs)
+ sbus_iounmap(qe->qcregs, CREG_REG_SIZE);
+ if (qe->mregs)
+ sbus_iounmap(qe->mregs, MREGS_REG_SIZE);
+ if (qe->qe_block)
+ sbus_free_consistent(qe->qe_sdev,
+ PAGE_SIZE,
+ qe->qe_block,
+ qe->qblock_dvma);
+ if (qe->buffers)
+ sbus_free_consistent(qe->qe_sdev,
+ sizeof(struct sunqe_buffers),
+ qe->buffers,
+ qe->buffers_dvma);
+
+ free_netdev(dev);
+
return res;
}
-static int __init qec_match(struct sbus_dev *sdev)
+static int __devinit qec_sbus_probe(struct of_device *dev, const struct of_device_id *match)
{
- struct sbus_dev *sibling;
- int i;
-
- if (strcmp(sdev->prom_name, "qec") != 0)
- return 0;
+ struct sbus_dev *sdev = to_sbus_device(&dev->dev);
- /* QEC can be parent of either QuadEthernet or BigMAC
- * children. Do not confuse this with qfe/SUNW,qfe
- * which is a quad-happymeal card and handled by
- * a different driver.
- */
- sibling = sdev->child;
- for (i = 0; i < 4; i++) {
- if (sibling == NULL)
- return 0;
- if (strcmp(sibling->prom_name, "qe") != 0)
- return 0;
- sibling = sibling->next;
- }
- return 1;
+ return qec_ether_init(sdev);
}
-static int __init qec_probe(void)
+static int __devexit qec_sbus_remove(struct of_device *dev)
{
- struct net_device *dev = NULL;
- struct sbus_bus *bus;
- struct sbus_dev *sdev = NULL;
- static int called;
- int cards = 0, v;
-
- root_qec_dev = NULL;
-
- if (called)
- return -ENODEV;
- called++;
-
- for_each_sbus(bus) {
- for_each_sbusdev(sdev, bus) {
- if (cards)
- dev = NULL;
-
- if (qec_match(sdev)) {
- cards++;
- if ((v = qec_ether_init(dev, sdev)))
- return v;
- }
- }
- }
- if (!cards)
- return -ENODEV;
+ struct sunqe *qp = dev_get_drvdata(&dev->dev);
+ struct net_device *net_dev = qp->dev;
+
+ unregister_netdevice(net_dev);
+
+ sbus_iounmap(qp->qcregs, CREG_REG_SIZE);
+ sbus_iounmap(qp->mregs, MREGS_REG_SIZE);
+ sbus_free_consistent(qp->qe_sdev,
+ PAGE_SIZE,
+ qp->qe_block,
+ qp->qblock_dvma);
+ sbus_free_consistent(qp->qe_sdev,
+ sizeof(struct sunqe_buffers),
+ qp->buffers,
+ qp->buffers_dvma);
+
+ free_netdev(net_dev);
+
+ dev_set_drvdata(&dev->dev, NULL);
+
return 0;
}
-static void __exit qec_cleanup(void)
+static struct of_device_id qec_sbus_match[] = {
+ {
+ .name = "qe",
+ },
+ {},
+};
+
+MODULE_DEVICE_TABLE(of, qec_sbus_match);
+
+static struct of_platform_driver qec_sbus_driver = {
+ .name = "qec",
+ .match_table = qec_sbus_match,
+ .probe = qec_sbus_probe,
+ .remove = __devexit_p(qec_sbus_remove),
+};
+
+static int __init qec_init(void)
+{
+ return of_register_driver(&qec_sbus_driver, &sbus_bus_type);
+}
+
+static void __exit qec_exit(void)
{
- struct sunqec *next_qec;
- int i;
+ of_unregister_driver(&qec_sbus_driver);
while (root_qec_dev) {
- next_qec = root_qec_dev->next_module;
-
- /* Release all four QE channels, then the QEC itself. */
- for (i = 0; i < 4; i++) {
- unregister_netdev(root_qec_dev->qes[i]->dev);
- sbus_iounmap(root_qec_dev->qes[i]->qcregs, CREG_REG_SIZE);
- sbus_iounmap(root_qec_dev->qes[i]->mregs, MREGS_REG_SIZE);
- sbus_free_consistent(root_qec_dev->qes[i]->qe_sdev,
- PAGE_SIZE,
- root_qec_dev->qes[i]->qe_block,
- root_qec_dev->qes[i]->qblock_dvma);
- sbus_free_consistent(root_qec_dev->qes[i]->qe_sdev,
- sizeof(struct sunqe_buffers),
- root_qec_dev->qes[i]->buffers,
- root_qec_dev->qes[i]->buffers_dvma);
- free_netdev(root_qec_dev->qes[i]->dev);
- }
- free_irq(root_qec_dev->qec_sdev->irqs[0], (void *)root_qec_dev);
+ struct sunqec *next = root_qec_dev->next_module;
+
+ free_irq(root_qec_dev->qec_sdev->irqs[0],
+ (void *) root_qec_dev);
sbus_iounmap(root_qec_dev->gregs, GLOB_REG_SIZE);
+
kfree(root_qec_dev);
- root_qec_dev = next_qec;
+
+ root_qec_dev = next;
}
}
-module_init(qec_probe);
-module_exit(qec_cleanup);
+module_init(qec_init);
+module_exit(qec_exit);
projects / linux-2.6 / commitdiff