[NET] sunqe: Convert to new SBUS driver layer.

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 219 insertions, 249 deletions

diff --git a/drivers/net/sunqe.c b/drivers/net/sunqe.c
index 1f2323be60d4..9da6d5b87173 100644
--- a/drivers/net/sunqe.c
+++ b/drivers/net/sunqe.c
@@ -1,10 +1,9 @@
-/* $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>
@@ -41,9 +40,9 @@
 #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";
@@ -755,298 +754,269 @@ static inline void qec_init_once(struct sunqec *qecp, struct sbus_dev *qsdev)
                     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);