--- /dev/null
+/*
+ * jazzsonic.c
+ *
+ * (C) 2005 Finn Thain
+ *
+ * Converted to DMA API, and (from the mac68k project) introduced
+ * dhd's support for 16-bit cards.
+ *
+ * (C) 1996,1998 by Thomas Bogendoerfer (tsbogend@alpha.franken.de)
+ *
+ * This driver is based on work from Andreas Busse, but most of
+ * the code is rewritten.
+ *
+ * (C) 1995 by Andreas Busse (andy@waldorf-gmbh.de)
+ *
+ * A driver for the onboard Sonic ethernet controller on Mips Jazz
+ * systems (Acer Pica-61, Mips Magnum 4000, Olivetti M700 and
+ * perhaps others, too)
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/fcntl.h>
+#include <linux/gfp.h>
+#include <linux/interrupt.h>
+#include <linux/ioport.h>
+#include <linux/in.h>
+#include <linux/string.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+#include <linux/platform_device.h>
+#include <linux/dma-mapping.h>
+#include <linux/slab.h>
+
+#include <asm/bootinfo.h>
+#include <asm/pgtable.h>
+#include <asm/io.h>
+#include <asm/dma.h>
+#include <asm/jazz.h>
+#include <asm/jazzdma.h>
+
+static char jazz_sonic_string[] = "jazzsonic";
+
+#define SONIC_MEM_SIZE 0x100
+
+#include "sonic.h"
+
+/*
+ * Macros to access SONIC registers
+ */
+#define SONIC_READ(reg) (*((volatile unsigned int *)dev->base_addr+reg))
+
+#define SONIC_WRITE(reg,val) \
+do { \
+ *((volatile unsigned int *)dev->base_addr+(reg)) = (val); \
+} while (0)
+
+
+/* use 0 for production, 1 for verification, >1 for debug */
+#ifdef SONIC_DEBUG
+static unsigned int sonic_debug = SONIC_DEBUG;
+#else
+static unsigned int sonic_debug = 1;
+#endif
+
+/*
+ * We cannot use station (ethernet) address prefixes to detect the
+ * sonic controller since these are board manufacturer depended.
+ * So we check for known Silicon Revision IDs instead.
+ */
+static unsigned short known_revisions[] =
+{
+ 0x04, /* Mips Magnum 4000 */
+ 0xffff /* end of list */
+};
+
+static int jazzsonic_open(struct net_device* dev)
+{
+ int retval;
+
+ retval = request_irq(dev->irq, sonic_interrupt, 0, "sonic", dev);
+ if (retval) {
+ printk(KERN_ERR "%s: unable to get IRQ %d.\n",
+ dev->name, dev->irq);
+ return retval;
+ }
+
+ retval = sonic_open(dev);
+ if (retval)
+ free_irq(dev->irq, dev);
+ return retval;
+}
+
+static int jazzsonic_close(struct net_device* dev)
+{
+ int err;
+ err = sonic_close(dev);
+ free_irq(dev->irq, dev);
+ return err;
+}
+
+static const struct net_device_ops sonic_netdev_ops = {
+ .ndo_open = jazzsonic_open,
+ .ndo_stop = jazzsonic_close,
+ .ndo_start_xmit = sonic_send_packet,
+ .ndo_get_stats = sonic_get_stats,
+ .ndo_set_rx_mode = sonic_multicast_list,
+ .ndo_tx_timeout = sonic_tx_timeout,
+ .ndo_change_mtu = eth_change_mtu,
+ .ndo_validate_addr = eth_validate_addr,
+ .ndo_set_mac_address = eth_mac_addr,
+};
+
+static int sonic_probe1(struct net_device *dev)
+{
+ static unsigned version_printed;
+ unsigned int silicon_revision;
+ unsigned int val;
+ struct sonic_local *lp = netdev_priv(dev);
+ int err = -ENODEV;
+ int i;
+
+ if (!request_mem_region(dev->base_addr, SONIC_MEM_SIZE, jazz_sonic_string))
+ return -EBUSY;
+
+ /*
+ * get the Silicon Revision ID. If this is one of the known
+ * one assume that we found a SONIC ethernet controller at
+ * the expected location.
+ */
+ silicon_revision = SONIC_READ(SONIC_SR);
+ if (sonic_debug > 1)
+ printk("SONIC Silicon Revision = 0x%04x\n",silicon_revision);
+
+ i = 0;
+ while (known_revisions[i] != 0xffff &&
+ known_revisions[i] != silicon_revision)
+ i++;
+
+ if (known_revisions[i] == 0xffff) {
+ printk("SONIC ethernet controller not found (0x%4x)\n",
+ silicon_revision);
+ goto out;
+ }
+
+ if (sonic_debug && version_printed++ == 0)
+ printk(version);
+
+ printk(KERN_INFO "%s: Sonic ethernet found at 0x%08lx, ",
+ dev_name(lp->device), dev->base_addr);
+
+ /*
+ * Put the sonic into software reset, then
+ * retrieve and print the ethernet address.
+ */
+ SONIC_WRITE(SONIC_CMD,SONIC_CR_RST);
+ SONIC_WRITE(SONIC_CEP,0);
+ for (i=0; i<3; i++) {
+ val = SONIC_READ(SONIC_CAP0-i);
+ dev->dev_addr[i*2] = val;
+ dev->dev_addr[i*2+1] = val >> 8;
+ }
+
+ err = -ENOMEM;
+
+ /* Initialize the device structure. */
+
+ lp->dma_bitmode = SONIC_BITMODE32;
+
+ /* Allocate the entire chunk of memory for the descriptors.
+ Note that this cannot cross a 64K boundary. */
+ lp->descriptors = dma_alloc_coherent(lp->device,
+ SIZEOF_SONIC_DESC *
+ SONIC_BUS_SCALE(lp->dma_bitmode),
+ &lp->descriptors_laddr,
+ GFP_KERNEL);
+ if (lp->descriptors == NULL)
+ goto out;
+
+ /* Now set up the pointers to point to the appropriate places */
+ lp->cda = lp->descriptors;
+ lp->tda = lp->cda + (SIZEOF_SONIC_CDA
+ * SONIC_BUS_SCALE(lp->dma_bitmode));
+ lp->rda = lp->tda + (SIZEOF_SONIC_TD * SONIC_NUM_TDS
+ * SONIC_BUS_SCALE(lp->dma_bitmode));
+ lp->rra = lp->rda + (SIZEOF_SONIC_RD * SONIC_NUM_RDS
+ * SONIC_BUS_SCALE(lp->dma_bitmode));
+
+ lp->cda_laddr = lp->descriptors_laddr;
+ lp->tda_laddr = lp->cda_laddr + (SIZEOF_SONIC_CDA
+ * SONIC_BUS_SCALE(lp->dma_bitmode));
+ lp->rda_laddr = lp->tda_laddr + (SIZEOF_SONIC_TD * SONIC_NUM_TDS
+ * SONIC_BUS_SCALE(lp->dma_bitmode));
+ lp->rra_laddr = lp->rda_laddr + (SIZEOF_SONIC_RD * SONIC_NUM_RDS
+ * SONIC_BUS_SCALE(lp->dma_bitmode));
+
+ dev->netdev_ops = &sonic_netdev_ops;
+ dev->watchdog_timeo = TX_TIMEOUT;
+
+ /*
+ * clear tally counter
+ */
+ SONIC_WRITE(SONIC_CRCT,0xffff);
+ SONIC_WRITE(SONIC_FAET,0xffff);
+ SONIC_WRITE(SONIC_MPT,0xffff);
+
+ return 0;
+out:
+ release_mem_region(dev->base_addr, SONIC_MEM_SIZE);
+ return err;
+}
+
+/*
+ * Probe for a SONIC ethernet controller on a Mips Jazz board.
+ * Actually probing is superfluous but we're paranoid.
+ */
+static int jazz_sonic_probe(struct platform_device *pdev)
+{
+ struct net_device *dev;
+ struct sonic_local *lp;
+ struct resource *res;
+ int err = 0;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res)
+ return -ENODEV;
+
+ dev = alloc_etherdev(sizeof(struct sonic_local));
+ if (!dev)
+ return -ENOMEM;
+
+ lp = netdev_priv(dev);
+ lp->device = &pdev->dev;
+ SET_NETDEV_DEV(dev, &pdev->dev);
+ platform_set_drvdata(pdev, dev);
+
+ netdev_boot_setup_check(dev);
+
+ dev->base_addr = res->start;
+ dev->irq = platform_get_irq(pdev, 0);
+ err = sonic_probe1(dev);
+ if (err)
+ goto out;
+ err = register_netdev(dev);
+ if (err)
+ goto out1;
+
+ printk("%s: MAC %pM IRQ %d\n", dev->name, dev->dev_addr, dev->irq);
+
+ return 0;
+
+out1:
+ release_mem_region(dev->base_addr, SONIC_MEM_SIZE);
+out:
+ free_netdev(dev);
+
+ return err;
+}
+
+MODULE_DESCRIPTION("Jazz SONIC ethernet driver");
+module_param(sonic_debug, int, 0);
+MODULE_PARM_DESC(sonic_debug, "jazzsonic debug level (1-4)");
+MODULE_ALIAS("platform:jazzsonic");
+
+#include "sonic.c"
+
+static int jazz_sonic_device_remove(struct platform_device *pdev)
+{
+ struct net_device *dev = platform_get_drvdata(pdev);
+ struct sonic_local* lp = netdev_priv(dev);
+
+ unregister_netdev(dev);
+ dma_free_coherent(lp->device, SIZEOF_SONIC_DESC * SONIC_BUS_SCALE(lp->dma_bitmode),
+ lp->descriptors, lp->descriptors_laddr);
+ release_mem_region(dev->base_addr, SONIC_MEM_SIZE);
+ free_netdev(dev);
+
+ return 0;
+}
+
+static struct platform_driver jazz_sonic_driver = {
+ .probe = jazz_sonic_probe,
+ .remove = jazz_sonic_device_remove,
+ .driver = {
+ .name = jazz_sonic_string,
+ },
+};
+
+module_platform_driver(jazz_sonic_driver);
Code Review / kvmfornfv.git / blobdiff