diff options
Diffstat (limited to 'drivers/net/xtsonic.c')
| -rw-r--r-- | drivers/net/xtsonic.c | 333 |
1 files changed, 0 insertions, 333 deletions
diff --git a/drivers/net/xtsonic.c b/drivers/net/xtsonic.c deleted file mode 100644 index 9f12026..0000000 --- a/drivers/net/xtsonic.c +++ /dev/null @@ -1,333 +0,0 @@ -/* - * xtsonic.c - * - * (C) 2001 - 2007 Tensilica Inc. - * Kevin Chea <kchea@yahoo.com> - * Marc Gauthier <marc@linux-xtensa.org> - * Chris Zankel <chris@zankel.net> - * - * (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 the XT2000. - */ - -#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/init.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/io.h> -#include <asm/pgtable.h> -#include <asm/dma.h> - -static char xtsonic_string[] = "xtsonic"; - -extern unsigned xtboard_nvram_valid(void); -extern void xtboard_get_ether_addr(unsigned char *buf); - -#include "sonic.h" - -/* - * According to the documentation for the Sonic ethernet controller, - * EOBC should be 760 words (1520 bytes) for 32-bit applications, and, - * as such, 2 words less than the buffer size. The value for RBSIZE - * defined in sonic.h, however is only 1520. - * - * (Note that in 16-bit configurations, EOBC is 759 words (1518 bytes) and - * RBSIZE 1520 bytes) - */ -#undef SONIC_RBSIZE -#define SONIC_RBSIZE 1524 - -/* - * The chip provides 256 byte register space. - */ -#define SONIC_MEM_SIZE 0x100 - -/* - * Macros to access SONIC registers - */ -#define SONIC_READ(reg) \ - (0xffff & *((volatile unsigned int *)dev->base_addr+reg)) - -#define SONIC_WRITE(reg,val) \ - *((volatile unsigned int *)dev->base_addr+reg) = val - - -/* Use 0 for production, 1 for verification, and >2 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[] = -{ - 0x101, /* SONIC 83934 */ - 0xffff /* end of list */ -}; - -static int xtsonic_open(struct net_device *dev) -{ - int retval; - - retval = request_irq(dev->irq, sonic_interrupt, IRQF_DISABLED, - "sonic", dev); - if (retval) { - printk(KERN_ERR "%s: unable to get IRQ %d.\n", - dev->name, dev->irq); - return -EAGAIN; - } - - retval = sonic_open(dev); - if (retval) - free_irq(dev->irq, dev); - return retval; -} - -static int xtsonic_close(struct net_device *dev) -{ - int err; - err = sonic_close(dev); - free_irq(dev->irq, dev); - return err; -} - -static const struct net_device_ops xtsonic_netdev_ops = { - .ndo_open = xtsonic_open, - .ndo_stop = xtsonic_close, - .ndo_start_xmit = sonic_send_packet, - .ndo_get_stats = sonic_get_stats, - .ndo_set_multicast_list = sonic_multicast_list, - .ndo_tx_timeout = sonic_tx_timeout, - .ndo_validate_addr = eth_validate_addr, - .ndo_change_mtu = eth_change_mtu, - .ndo_set_mac_address = eth_mac_addr, -}; - -static int __init sonic_probe1(struct net_device *dev) -{ - static unsigned version_printed = 0; - unsigned int silicon_revision; - struct sonic_local *lp = netdev_priv(dev); - unsigned int base_addr = dev->base_addr; - int i; - int err = 0; - - if (!request_mem_region(base_addr, 0x100, xtsonic_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); - return -ENODEV; - } - - if (sonic_debug && version_printed++ == 0) - printk(version); - - /* - * Put the sonic into software reset, then retrieve ethernet address. - * Note: we are assuming that the boot-loader has initialized the cam. - */ - SONIC_WRITE(SONIC_CMD,SONIC_CR_RST); - SONIC_WRITE(SONIC_DCR, - SONIC_DCR_WC0|SONIC_DCR_DW|SONIC_DCR_LBR|SONIC_DCR_SBUS); - SONIC_WRITE(SONIC_CEP,0); - SONIC_WRITE(SONIC_IMR,0); - - SONIC_WRITE(SONIC_CMD,SONIC_CR_RST); - SONIC_WRITE(SONIC_CEP,0); - - for (i=0; i<3; i++) { - unsigned int val = SONIC_READ(SONIC_CAP0-i); - dev->dev_addr[i*2] = val; - dev->dev_addr[i*2+1] = val >> 8; - } - - /* Initialize the device structure. */ - - lp->dma_bitmode = SONIC_BITMODE32; - - /* - * Allocate local private descriptor areas in uncached space. - * The entire structure must be located within the same 64kb segment. - * A simple way to ensure this is to allocate twice the - * size of the structure -- given that the structure is - * much less than 64 kB, at least one of the halves of - * the allocated area will be contained entirely in 64 kB. - * We also allocate extra space for a pointer to allow freeing - * this structure later on (in xtsonic_cleanup_module()). - */ - 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) { - printk(KERN_ERR "%s: couldn't alloc DMA memory for " - " descriptors.\n", dev_name(lp->device)); - goto out; - } - - 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)); - - /* get the virtual dma address */ - - 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 = &xtsonic_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_region(dev->base_addr, SONIC_MEM_SIZE); - return err; -} - - -/* - * Probe for a SONIC ethernet controller on an XT2000 board. - * Actually probing is superfluous but we're paranoid. - */ - -int __devinit xtsonic_probe(struct platform_device *pdev) -{ - struct net_device *dev; - struct sonic_local *lp; - struct resource *resmem, *resirq; - int err = 0; - - if ((resmem = platform_get_resource(pdev, IORESOURCE_MEM, 0)) == NULL) - return -ENODEV; - - if ((resirq = platform_get_resource(pdev, IORESOURCE_IRQ, 0)) == NULL) - return -ENODEV; - - if ((dev = alloc_etherdev(sizeof(struct sonic_local))) == NULL) - return -ENOMEM; - - lp = netdev_priv(dev); - lp->device = &pdev->dev; - SET_NETDEV_DEV(dev, &pdev->dev); - netdev_boot_setup_check(dev); - - dev->base_addr = resmem->start; - dev->irq = resirq->start; - - if ((err = sonic_probe1(dev))) - goto out; - if ((err = register_netdev(dev))) - goto out1; - - printk("%s: SONIC ethernet @%08lx, MAC %pM, IRQ %d\n", dev->name, - dev->base_addr, dev->dev_addr, dev->irq); - - return 0; - -out1: - release_region(dev->base_addr, SONIC_MEM_SIZE); -out: - free_netdev(dev); - - return err; -} - -MODULE_DESCRIPTION("Xtensa XT2000 SONIC ethernet driver"); -module_param(sonic_debug, int, 0); -MODULE_PARM_DESC(sonic_debug, "xtsonic debug level (1-4)"); - -#include "sonic.c" - -static int __devexit xtsonic_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_region (dev->base_addr, SONIC_MEM_SIZE); - free_netdev(dev); - - return 0; -} - -static struct platform_driver xtsonic_driver = { - .probe = xtsonic_probe, - .remove = __devexit_p(xtsonic_device_remove), - .driver = { - .name = xtsonic_string, - }, -}; - -static int __init xtsonic_init(void) -{ - return platform_driver_register(&xtsonic_driver); -} - -static void __exit xtsonic_cleanup(void) -{ - platform_driver_unregister(&xtsonic_driver); -} - -module_init(xtsonic_init); -module_exit(xtsonic_cleanup); |