diff options
Diffstat (limited to 'drivers/net/macsonic.c')
| -rw-r--r-- | drivers/net/macsonic.c | 657 |
1 files changed, 657 insertions, 0 deletions
diff --git a/drivers/net/macsonic.c b/drivers/net/macsonic.c new file mode 100644 index 00000000000..be28c65de72 --- /dev/null +++ b/drivers/net/macsonic.c @@ -0,0 +1,657 @@ +/* + * macsonic.c + * + * (C) 1998 Alan Cox + * + * Debugging Andreas Ehliar, Michael Schmitz + * + * Based on code + * (C) 1996 by Thomas Bogendoerfer (tsbogend@bigbug.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 Mac onboard Sonic ethernet chip. + * + * 98/12/21 MSch: judged from tests on Q800, it's basically working, + * but eating up both receive and transmit resources + * and duplicating packets. Needs more testing. + * + * 99/01/03 MSch: upgraded to version 0.92 of the core driver, fixed. + * + * 00/10/31 sammy@oh.verio.com: Updated driver for 2.4 kernels, fixed problems + * on centris. + */ + +#include <linux/kernel.h> +#include <linux/types.h> +#include <linux/ctype.h> +#include <linux/fcntl.h> +#include <linux/interrupt.h> +#include <linux/init.h> +#include <linux/ioport.h> +#include <linux/in.h> +#include <linux/slab.h> +#include <linux/string.h> +#include <linux/delay.h> +#include <linux/nubus.h> +#include <linux/errno.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/skbuff.h> +#include <linux/module.h> +#include <linux/bitops.h> + +#include <asm/bootinfo.h> +#include <asm/system.h> +#include <asm/pgtable.h> +#include <asm/io.h> +#include <asm/hwtest.h> +#include <asm/dma.h> +#include <asm/macintosh.h> +#include <asm/macints.h> +#include <asm/mac_via.h> + +#define SREGS_PAD(n) u16 n; + +#include "sonic.h" + +#define SONIC_READ(reg) \ + nubus_readl(base_addr+(reg)) +#define SONIC_WRITE(reg,val) \ + nubus_writel((val), base_addr+(reg)) +#define sonic_read(dev, reg) \ + nubus_readl((dev)->base_addr+(reg)) +#define sonic_write(dev, reg, val) \ + nubus_writel((val), (dev)->base_addr+(reg)) + + +static int sonic_debug; +static int sonic_version_printed; + +static int reg_offset; + +extern int mac_onboard_sonic_probe(struct net_device* dev); +extern int mac_nubus_sonic_probe(struct net_device* dev); + +/* For onboard SONIC */ +#define ONBOARD_SONIC_REGISTERS 0x50F0A000 +#define ONBOARD_SONIC_PROM_BASE 0x50f08000 + +enum macsonic_type { + MACSONIC_DUODOCK, + MACSONIC_APPLE, + MACSONIC_APPLE16, + MACSONIC_DAYNA, + MACSONIC_DAYNALINK +}; + +/* For the built-in SONIC in the Duo Dock */ +#define DUODOCK_SONIC_REGISTERS 0xe10000 +#define DUODOCK_SONIC_PROM_BASE 0xe12000 + +/* For Apple-style NuBus SONIC */ +#define APPLE_SONIC_REGISTERS 0 +#define APPLE_SONIC_PROM_BASE 0x40000 + +/* Daynalink LC SONIC */ +#define DAYNALINK_PROM_BASE 0x400000 + +/* For Dayna-style NuBus SONIC (haven't seen one yet) */ +#define DAYNA_SONIC_REGISTERS 0x180000 +/* This is what OpenBSD says. However, this is definitely in NuBus + ROM space so we should be able to get it by walking the NuBus + resource directories */ +#define DAYNA_SONIC_MAC_ADDR 0xffe004 + +#define SONIC_READ_PROM(addr) nubus_readb(prom_addr+addr) + +struct net_device * __init macsonic_probe(int unit) +{ + struct net_device *dev = alloc_etherdev(0); + int err; + + if (!dev) + return ERR_PTR(-ENOMEM); + + if (unit >= 0) + sprintf(dev->name, "eth%d", unit); + + SET_MODULE_OWNER(dev); + + /* This will catch fatal stuff like -ENOMEM as well as success */ + err = mac_onboard_sonic_probe(dev); + if (err == 0) + goto found; + if (err != -ENODEV) + goto out; + err = mac_nubus_sonic_probe(dev); + if (err) + goto out; +found: + err = register_netdev(dev); + if (err) + goto out1; + return dev; +out1: + kfree(dev->priv); +out: + free_netdev(dev); + return ERR_PTR(err); +} + +/* + * For reversing the PROM address + */ + +static unsigned char nibbletab[] = {0, 8, 4, 12, 2, 10, 6, 14, + 1, 9, 5, 13, 3, 11, 7, 15}; + +static inline void bit_reverse_addr(unsigned char addr[6]) +{ + int i; + + for(i = 0; i < 6; i++) + addr[i] = ((nibbletab[addr[i] & 0xf] << 4) | + nibbletab[(addr[i] >> 4) &0xf]); +} + +int __init macsonic_init(struct net_device* dev) +{ + struct sonic_local* lp = NULL; + int i; + + /* Allocate the entire chunk of memory for the descriptors. + Note that this cannot cross a 64K boundary. */ + for (i = 0; i < 20; i++) { + unsigned long desc_base, desc_top; + if((lp = kmalloc(sizeof(struct sonic_local), GFP_KERNEL | GFP_DMA)) == NULL) { + printk(KERN_ERR "%s: couldn't allocate descriptor buffers\n", dev->name); + return -ENOMEM; + } + + desc_base = (unsigned long) lp; + desc_top = desc_base + sizeof(struct sonic_local); + if ((desc_top & 0xffff) >= (desc_base & 0xffff)) + break; + /* Hmm. try again (FIXME: does this actually work?) */ + kfree(lp); + printk(KERN_DEBUG + "%s: didn't get continguous chunk [%08lx - %08lx], trying again\n", + dev->name, desc_base, desc_top); + } + + if (lp == NULL) { + printk(KERN_ERR "%s: tried 20 times to allocate descriptor buffers, giving up.\n", + dev->name); + return -ENOMEM; + } + + dev->priv = lp; + +#if 0 + /* this code is only here as a curiousity... mainly, where the + fuck did SONIC_BUS_SCALE come from, and what was it supposed + to do? the normal allocation works great for 32 bit stuffs.. */ + + /* Now set up the pointers to point to the appropriate places */ + lp->cda = lp->sonic_desc; + 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)); + +#endif + + memset(lp, 0, sizeof(struct sonic_local)); + + lp->cda_laddr = (unsigned int)&(lp->cda); + lp->tda_laddr = (unsigned int)lp->tda; + lp->rra_laddr = (unsigned int)lp->rra; + lp->rda_laddr = (unsigned int)lp->rda; + + /* FIXME, maybe we should use skbs */ + if ((lp->rba = (char *) + kmalloc(SONIC_NUM_RRS * SONIC_RBSIZE, GFP_KERNEL | GFP_DMA)) == NULL) { + printk(KERN_ERR "%s: couldn't allocate receive buffers\n", dev->name); + dev->priv = NULL; + kfree(lp); + return -ENOMEM; + } + + lp->rba_laddr = (unsigned int)lp->rba; + + { + int rs, ds; + + /* almost always 12*4096, but let's not take chances */ + rs = ((SONIC_NUM_RRS * SONIC_RBSIZE + 4095) / 4096) * 4096; + /* almost always under a page, but let's not take chances */ + ds = ((sizeof(struct sonic_local) + 4095) / 4096) * 4096; + kernel_set_cachemode(lp->rba, rs, IOMAP_NOCACHE_SER); + kernel_set_cachemode(lp, ds, IOMAP_NOCACHE_SER); + } + +#if 0 + flush_cache_all(); +#endif + + dev->open = sonic_open; + dev->stop = sonic_close; + dev->hard_start_xmit = sonic_send_packet; + dev->get_stats = sonic_get_stats; + dev->set_multicast_list = &sonic_multicast_list; + + /* + * clear tally counter + */ + sonic_write(dev, SONIC_CRCT, 0xffff); + sonic_write(dev, SONIC_FAET, 0xffff); + sonic_write(dev, SONIC_MPT, 0xffff); + + return 0; +} + +int __init mac_onboard_sonic_ethernet_addr(struct net_device* dev) +{ + const int prom_addr = ONBOARD_SONIC_PROM_BASE; + int i; + + /* On NuBus boards we can sometimes look in the ROM resources. + No such luck for comm-slot/onboard. */ + for(i = 0; i < 6; i++) + dev->dev_addr[i] = SONIC_READ_PROM(i); + + /* Most of the time, the address is bit-reversed. The NetBSD + source has a rather long and detailed historical account of + why this is so. */ + if (memcmp(dev->dev_addr, "\x08\x00\x07", 3) && + memcmp(dev->dev_addr, "\x00\xA0\x40", 3) && + memcmp(dev->dev_addr, "\x00\x05\x02", 3)) + bit_reverse_addr(dev->dev_addr); + else + return 0; + + /* If we still have what seems to be a bogus address, we'll + look in the CAM. The top entry should be ours. */ + /* Danger! This only works if MacOS has already initialized + the card... */ + if (memcmp(dev->dev_addr, "\x08\x00\x07", 3) && + memcmp(dev->dev_addr, "\x00\xA0\x40", 3) && + memcmp(dev->dev_addr, "\x00\x05\x02", 3)) + { + unsigned short val; + + printk(KERN_INFO "macsonic: PROM seems to be wrong, trying CAM entry 15\n"); + + sonic_write(dev, SONIC_CMD, SONIC_CR_RST); + sonic_write(dev, SONIC_CEP, 15); + + val = sonic_read(dev, SONIC_CAP2); + dev->dev_addr[5] = val >> 8; + dev->dev_addr[4] = val & 0xff; + val = sonic_read(dev, SONIC_CAP1); + dev->dev_addr[3] = val >> 8; + dev->dev_addr[2] = val & 0xff; + val = sonic_read(dev, SONIC_CAP0); + dev->dev_addr[1] = val >> 8; + dev->dev_addr[0] = val & 0xff; + + printk(KERN_INFO "HW Address from CAM 15: "); + for (i = 0; i < 6; i++) { + printk("%2.2x", dev->dev_addr[i]); + if (i < 5) + printk(":"); + } + printk("\n"); + } else return 0; + + if (memcmp(dev->dev_addr, "\x08\x00\x07", 3) && + memcmp(dev->dev_addr, "\x00\xA0\x40", 3) && + memcmp(dev->dev_addr, "\x00\x05\x02", 3)) + { + /* + * Still nonsense ... messed up someplace! + */ + printk(KERN_ERR "macsonic: ERROR (INVALID MAC)\n"); + return -EIO; + } else return 0; +} + +int __init mac_onboard_sonic_probe(struct net_device* dev) +{ + /* Bwahahaha */ + static int once_is_more_than_enough; + int i; + int dma_bitmode; + + if (once_is_more_than_enough) + return -ENODEV; + once_is_more_than_enough = 1; + + if (!MACH_IS_MAC) + return -ENODEV; + + printk(KERN_INFO "Checking for internal Macintosh ethernet (SONIC).. "); + + if (macintosh_config->ether_type != MAC_ETHER_SONIC) + { + printk("none.\n"); + return -ENODEV; + } + + /* Bogus probing, on the models which may or may not have + Ethernet (BTW, the Ethernet *is* always at the same + address, and nothing else lives there, at least if Apple's + documentation is to be believed) */ + if (macintosh_config->ident == MAC_MODEL_Q630 || + macintosh_config->ident == MAC_MODEL_P588 || + macintosh_config->ident == MAC_MODEL_C610) { + unsigned long flags; + int card_present; + + local_irq_save(flags); + card_present = hwreg_present((void*)ONBOARD_SONIC_REGISTERS); + local_irq_restore(flags); + + if (!card_present) { + printk("none.\n"); + return -ENODEV; + } + } + + printk("yes\n"); + + /* Danger! My arms are flailing wildly! You *must* set this + before using sonic_read() */ + + dev->base_addr = ONBOARD_SONIC_REGISTERS; + if (via_alt_mapping) + dev->irq = IRQ_AUTO_3; + else + dev->irq = IRQ_NUBUS_9; + + if (!sonic_version_printed) { + printk(KERN_INFO "%s", version); + sonic_version_printed = 1; + } + printk(KERN_INFO "%s: onboard / comm-slot SONIC at 0x%08lx\n", + dev->name, dev->base_addr); + + /* Now do a song and dance routine in an attempt to determine + the bus width */ + + /* The PowerBook's SONIC is 16 bit always. */ + if (macintosh_config->ident == MAC_MODEL_PB520) { + reg_offset = 0; + dma_bitmode = 0; + } else if (macintosh_config->ident == MAC_MODEL_C610) { + reg_offset = 0; + dma_bitmode = 1; + } else { + /* Some of the comm-slot cards are 16 bit. But some + of them are not. The 32-bit cards use offset 2 and + pad with zeroes or sometimes ones (I think...) + Therefore, if we try offset 0 and get a silicon + revision of 0, we assume 16 bit. */ + int sr; + + /* Technically this is not necessary since we zeroed + it above */ + reg_offset = 0; + dma_bitmode = 0; + sr = sonic_read(dev, SONIC_SR); + if (sr == 0 || sr == 0xffff) { + reg_offset = 2; + /* 83932 is 0x0004, 83934 is 0x0100 or 0x0101 */ + sr = sonic_read(dev, SONIC_SR); + dma_bitmode = 1; + + } + printk(KERN_INFO + "%s: revision 0x%04x, using %d bit DMA and register offset %d\n", + dev->name, sr, dma_bitmode?32:16, reg_offset); + } + + + /* this carries my sincere apologies -- by the time I got to updating + the driver, support for "reg_offsets" appeares nowhere in the sonic + code, going back for over a year. Fortunately, my Mac does't seem + to use whatever this was. + + If you know how this is supposed to be implemented, either fix it, + or contact me (sammy@oh.verio.com) to explain what it is. --Sam */ + + if(reg_offset) { + printk("%s: register offset unsupported. please fix this if you know what it is.\n", dev->name); + return -ENODEV; + } + + /* Software reset, then initialize control registers. */ + sonic_write(dev, SONIC_CMD, SONIC_CR_RST); + sonic_write(dev, SONIC_DCR, SONIC_DCR_BMS | + SONIC_DCR_RFT1 | SONIC_DCR_TFT0 | SONIC_DCR_EXBUS | + (dma_bitmode ? SONIC_DCR_DW : 0)); + + /* This *must* be written back to in order to restore the + extended programmable output bits */ + sonic_write(dev, SONIC_DCR2, 0); + + /* Clear *and* disable interrupts to be on the safe side */ + sonic_write(dev, SONIC_ISR,0x7fff); + sonic_write(dev, SONIC_IMR,0); + + /* Now look for the MAC address. */ + if (mac_onboard_sonic_ethernet_addr(dev) != 0) + return -ENODEV; + + printk(KERN_INFO "MAC "); + for (i = 0; i < 6; i++) { + printk("%2.2x", dev->dev_addr[i]); + if (i < 5) + printk(":"); + } + + printk(" IRQ %d\n", dev->irq); + + /* Shared init code */ + return macsonic_init(dev); +} + +int __init mac_nubus_sonic_ethernet_addr(struct net_device* dev, + unsigned long prom_addr, + int id) +{ + int i; + for(i = 0; i < 6; i++) + dev->dev_addr[i] = SONIC_READ_PROM(i); + /* For now we are going to assume that they're all bit-reversed */ + bit_reverse_addr(dev->dev_addr); + + return 0; +} + +int __init macsonic_ident(struct nubus_dev* ndev) +{ + if (ndev->dr_hw == NUBUS_DRHW_ASANTE_LC && + ndev->dr_sw == NUBUS_DRSW_SONIC_LC) + return MACSONIC_DAYNALINK; + if (ndev->dr_hw == NUBUS_DRHW_SONIC && + ndev->dr_sw == NUBUS_DRSW_APPLE) { + /* There has to be a better way to do this... */ + if (strstr(ndev->board->name, "DuoDock")) + return MACSONIC_DUODOCK; + else + return MACSONIC_APPLE; + } + return -1; +} + +int __init mac_nubus_sonic_probe(struct net_device* dev) +{ + static int slots; + struct nubus_dev* ndev = NULL; + unsigned long base_addr, prom_addr; + u16 sonic_dcr; + int id; + int i; + int dma_bitmode; + + /* Find the first SONIC that hasn't been initialized already */ + while ((ndev = nubus_find_type(NUBUS_CAT_NETWORK, + NUBUS_TYPE_ETHERNET, ndev)) != NULL) + { + /* Have we seen it already? */ + if (slots & (1<<ndev->board->slot)) + continue; + slots |= 1<<ndev->board->slot; + + /* Is it one of ours? */ + if ((id = macsonic_ident(ndev)) != -1) + break; + } + + if (ndev == NULL) + return -ENODEV; + + switch (id) { + case MACSONIC_DUODOCK: + base_addr = ndev->board->slot_addr + DUODOCK_SONIC_REGISTERS; + prom_addr = ndev->board->slot_addr + DUODOCK_SONIC_PROM_BASE; + sonic_dcr = SONIC_DCR_EXBUS | SONIC_DCR_RFT0 | SONIC_DCR_RFT1 + | SONIC_DCR_TFT0; + reg_offset = 2; + dma_bitmode = 1; + break; + case MACSONIC_APPLE: + base_addr = ndev->board->slot_addr + APPLE_SONIC_REGISTERS; + prom_addr = ndev->board->slot_addr + APPLE_SONIC_PROM_BASE; + sonic_dcr = SONIC_DCR_BMS | SONIC_DCR_RFT1 | SONIC_DCR_TFT0; + reg_offset = 0; + dma_bitmode = 1; + break; + case MACSONIC_APPLE16: + base_addr = ndev->board->slot_addr + APPLE_SONIC_REGISTERS; + prom_addr = ndev->board->slot_addr + APPLE_SONIC_PROM_BASE; + sonic_dcr = SONIC_DCR_EXBUS + | SONIC_DCR_RFT1 | SONIC_DCR_TFT0 + | SONIC_DCR_PO1 | SONIC_DCR_BMS; + reg_offset = 0; + dma_bitmode = 0; + break; + case MACSONIC_DAYNALINK: + base_addr = ndev->board->slot_addr + APPLE_SONIC_REGISTERS; + prom_addr = ndev->board->slot_addr + DAYNALINK_PROM_BASE; + sonic_dcr = SONIC_DCR_RFT1 | SONIC_DCR_TFT0 + | SONIC_DCR_PO1 | SONIC_DCR_BMS; + reg_offset = 0; + dma_bitmode = 0; + break; + case MACSONIC_DAYNA: + base_addr = ndev->board->slot_addr + DAYNA_SONIC_REGISTERS; + prom_addr = ndev->board->slot_addr + DAYNA_SONIC_MAC_ADDR; + sonic_dcr = SONIC_DCR_BMS + | SONIC_DCR_RFT1 | SONIC_DCR_TFT0 | SONIC_DCR_PO1; + reg_offset = 0; + dma_bitmode = 0; + break; + default: + printk(KERN_ERR "macsonic: WTF, id is %d\n", id); + return -ENODEV; + } + + /* Danger! My arms are flailing wildly! You *must* set this + before using sonic_read() */ + dev->base_addr = base_addr; + dev->irq = SLOT2IRQ(ndev->board->slot); + + if (!sonic_version_printed) { + printk(KERN_INFO "%s", version); + sonic_version_printed = 1; + } + printk(KERN_INFO "%s: %s in slot %X\n", + dev->name, ndev->board->name, ndev->board->slot); + printk(KERN_INFO "%s: revision 0x%04x, using %d bit DMA and register offset %d\n", + dev->name, sonic_read(dev, SONIC_SR), dma_bitmode?32:16, reg_offset); + + if(reg_offset) { + printk("%s: register offset unsupported. please fix this if you know what it is.\n", dev->name); + return -ENODEV; + } + + /* Software reset, then initialize control registers. */ + sonic_write(dev, SONIC_CMD, SONIC_CR_RST); + sonic_write(dev, SONIC_DCR, sonic_dcr + | (dma_bitmode ? SONIC_DCR_DW : 0)); + + /* Clear *and* disable interrupts to be on the safe side */ + sonic_write(dev, SONIC_ISR,0x7fff); + sonic_write(dev, SONIC_IMR,0); + + /* Now look for the MAC address. */ + if (mac_nubus_sonic_ethernet_addr(dev, prom_addr, id) != 0) + return -ENODEV; + + printk(KERN_INFO "MAC "); + for (i = 0; i < 6; i++) { + printk("%2.2x", dev->dev_addr[i]); + if (i < 5) + printk(":"); + } + printk(" IRQ %d\n", dev->irq); + + /* Shared init code */ + return macsonic_init(dev); +} + +#ifdef MODULE +static struct net_device *dev_macsonic; + +MODULE_PARM(sonic_debug, "i"); +MODULE_PARM_DESC(sonic_debug, "macsonic debug level (1-4)"); + +int +init_module(void) +{ + dev_macsonic = macsonic_probe(-1); + if (IS_ERR(dev_macsonic)) { + printk(KERN_WARNING "macsonic.c: No card found\n"); + return PTR_ERR(dev_macsonic); + } + return 0; +} + +void +cleanup_module(void) +{ + unregister_netdev(dev_macsonic); + kfree(dev_macsonic->priv); + free_netdev(dev_macsonic); +} +#endif /* MODULE */ + + +#define vdma_alloc(foo, bar) ((u32)foo) +#define vdma_free(baz) +#define sonic_chiptomem(bat) (bat) +#define PHYSADDR(quux) (quux) +#define CPHYSADDR(quux) (quux) + +#define sonic_request_irq request_irq +#define sonic_free_irq free_irq + +#include "sonic.c" + +/* + * Local variables: + * compile-command: "m68k-linux-gcc -D__KERNEL__ -I../../include -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer -pipe -fno-strength-reduce -ffixed-a2 -DMODULE -DMODVERSIONS -include ../../include/linux/modversions.h -c -o macsonic.o macsonic.c" + * version-control: t + * kept-new-versions: 5 + * c-indent-level: 8 + * tab-width: 8 + * End: + * + */ |