mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-22 12:14:01 +08:00
1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
658 lines
17 KiB
C
658 lines
17 KiB
C
/*
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* macsonic.c
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*
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* (C) 1998 Alan Cox
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*
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* Debugging Andreas Ehliar, Michael Schmitz
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*
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* Based on code
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* (C) 1996 by Thomas Bogendoerfer (tsbogend@bigbug.franken.de)
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*
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* This driver is based on work from Andreas Busse, but most of
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* the code is rewritten.
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*
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* (C) 1995 by Andreas Busse (andy@waldorf-gmbh.de)
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*
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* A driver for the Mac onboard Sonic ethernet chip.
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*
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* 98/12/21 MSch: judged from tests on Q800, it's basically working,
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* but eating up both receive and transmit resources
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* and duplicating packets. Needs more testing.
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*
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* 99/01/03 MSch: upgraded to version 0.92 of the core driver, fixed.
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*
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* 00/10/31 sammy@oh.verio.com: Updated driver for 2.4 kernels, fixed problems
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* on centris.
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*/
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#include <linux/kernel.h>
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#include <linux/types.h>
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#include <linux/ctype.h>
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#include <linux/fcntl.h>
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#include <linux/interrupt.h>
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#include <linux/init.h>
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#include <linux/ioport.h>
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#include <linux/in.h>
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#include <linux/slab.h>
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#include <linux/string.h>
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#include <linux/delay.h>
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#include <linux/nubus.h>
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#include <linux/errno.h>
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#include <linux/netdevice.h>
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#include <linux/etherdevice.h>
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#include <linux/skbuff.h>
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#include <linux/module.h>
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#include <linux/bitops.h>
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#include <asm/bootinfo.h>
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#include <asm/system.h>
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#include <asm/pgtable.h>
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#include <asm/io.h>
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#include <asm/hwtest.h>
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#include <asm/dma.h>
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#include <asm/macintosh.h>
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#include <asm/macints.h>
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#include <asm/mac_via.h>
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#define SREGS_PAD(n) u16 n;
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#include "sonic.h"
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#define SONIC_READ(reg) \
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nubus_readl(base_addr+(reg))
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#define SONIC_WRITE(reg,val) \
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nubus_writel((val), base_addr+(reg))
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#define sonic_read(dev, reg) \
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nubus_readl((dev)->base_addr+(reg))
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#define sonic_write(dev, reg, val) \
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nubus_writel((val), (dev)->base_addr+(reg))
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static int sonic_debug;
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static int sonic_version_printed;
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static int reg_offset;
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extern int mac_onboard_sonic_probe(struct net_device* dev);
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extern int mac_nubus_sonic_probe(struct net_device* dev);
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/* For onboard SONIC */
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#define ONBOARD_SONIC_REGISTERS 0x50F0A000
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#define ONBOARD_SONIC_PROM_BASE 0x50f08000
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enum macsonic_type {
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MACSONIC_DUODOCK,
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MACSONIC_APPLE,
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MACSONIC_APPLE16,
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MACSONIC_DAYNA,
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MACSONIC_DAYNALINK
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};
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/* For the built-in SONIC in the Duo Dock */
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#define DUODOCK_SONIC_REGISTERS 0xe10000
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#define DUODOCK_SONIC_PROM_BASE 0xe12000
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/* For Apple-style NuBus SONIC */
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#define APPLE_SONIC_REGISTERS 0
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#define APPLE_SONIC_PROM_BASE 0x40000
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/* Daynalink LC SONIC */
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#define DAYNALINK_PROM_BASE 0x400000
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/* For Dayna-style NuBus SONIC (haven't seen one yet) */
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#define DAYNA_SONIC_REGISTERS 0x180000
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/* This is what OpenBSD says. However, this is definitely in NuBus
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ROM space so we should be able to get it by walking the NuBus
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resource directories */
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#define DAYNA_SONIC_MAC_ADDR 0xffe004
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#define SONIC_READ_PROM(addr) nubus_readb(prom_addr+addr)
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struct net_device * __init macsonic_probe(int unit)
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{
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struct net_device *dev = alloc_etherdev(0);
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int err;
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if (!dev)
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return ERR_PTR(-ENOMEM);
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if (unit >= 0)
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sprintf(dev->name, "eth%d", unit);
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SET_MODULE_OWNER(dev);
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/* This will catch fatal stuff like -ENOMEM as well as success */
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err = mac_onboard_sonic_probe(dev);
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if (err == 0)
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goto found;
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if (err != -ENODEV)
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goto out;
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err = mac_nubus_sonic_probe(dev);
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if (err)
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goto out;
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found:
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err = register_netdev(dev);
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if (err)
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goto out1;
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return dev;
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out1:
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kfree(dev->priv);
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out:
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free_netdev(dev);
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return ERR_PTR(err);
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}
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/*
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* For reversing the PROM address
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*/
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static unsigned char nibbletab[] = {0, 8, 4, 12, 2, 10, 6, 14,
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1, 9, 5, 13, 3, 11, 7, 15};
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static inline void bit_reverse_addr(unsigned char addr[6])
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{
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int i;
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for(i = 0; i < 6; i++)
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addr[i] = ((nibbletab[addr[i] & 0xf] << 4) |
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nibbletab[(addr[i] >> 4) &0xf]);
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}
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int __init macsonic_init(struct net_device* dev)
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{
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struct sonic_local* lp = NULL;
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int i;
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/* Allocate the entire chunk of memory for the descriptors.
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Note that this cannot cross a 64K boundary. */
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for (i = 0; i < 20; i++) {
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unsigned long desc_base, desc_top;
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if((lp = kmalloc(sizeof(struct sonic_local), GFP_KERNEL | GFP_DMA)) == NULL) {
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printk(KERN_ERR "%s: couldn't allocate descriptor buffers\n", dev->name);
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return -ENOMEM;
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}
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desc_base = (unsigned long) lp;
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desc_top = desc_base + sizeof(struct sonic_local);
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if ((desc_top & 0xffff) >= (desc_base & 0xffff))
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break;
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/* Hmm. try again (FIXME: does this actually work?) */
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kfree(lp);
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printk(KERN_DEBUG
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"%s: didn't get continguous chunk [%08lx - %08lx], trying again\n",
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dev->name, desc_base, desc_top);
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}
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if (lp == NULL) {
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printk(KERN_ERR "%s: tried 20 times to allocate descriptor buffers, giving up.\n",
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dev->name);
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return -ENOMEM;
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}
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dev->priv = lp;
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#if 0
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/* this code is only here as a curiousity... mainly, where the
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fuck did SONIC_BUS_SCALE come from, and what was it supposed
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to do? the normal allocation works great for 32 bit stuffs.. */
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/* Now set up the pointers to point to the appropriate places */
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lp->cda = lp->sonic_desc;
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lp->tda = lp->cda + (SIZEOF_SONIC_CDA * SONIC_BUS_SCALE(lp->dma_bitmode));
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lp->rda = lp->tda + (SIZEOF_SONIC_TD * SONIC_NUM_TDS
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* SONIC_BUS_SCALE(lp->dma_bitmode));
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lp->rra = lp->rda + (SIZEOF_SONIC_RD * SONIC_NUM_RDS
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* SONIC_BUS_SCALE(lp->dma_bitmode));
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#endif
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memset(lp, 0, sizeof(struct sonic_local));
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lp->cda_laddr = (unsigned int)&(lp->cda);
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lp->tda_laddr = (unsigned int)lp->tda;
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lp->rra_laddr = (unsigned int)lp->rra;
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lp->rda_laddr = (unsigned int)lp->rda;
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/* FIXME, maybe we should use skbs */
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if ((lp->rba = (char *)
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kmalloc(SONIC_NUM_RRS * SONIC_RBSIZE, GFP_KERNEL | GFP_DMA)) == NULL) {
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printk(KERN_ERR "%s: couldn't allocate receive buffers\n", dev->name);
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dev->priv = NULL;
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kfree(lp);
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return -ENOMEM;
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}
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lp->rba_laddr = (unsigned int)lp->rba;
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{
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int rs, ds;
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/* almost always 12*4096, but let's not take chances */
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rs = ((SONIC_NUM_RRS * SONIC_RBSIZE + 4095) / 4096) * 4096;
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/* almost always under a page, but let's not take chances */
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ds = ((sizeof(struct sonic_local) + 4095) / 4096) * 4096;
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kernel_set_cachemode(lp->rba, rs, IOMAP_NOCACHE_SER);
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kernel_set_cachemode(lp, ds, IOMAP_NOCACHE_SER);
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}
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#if 0
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flush_cache_all();
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#endif
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dev->open = sonic_open;
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dev->stop = sonic_close;
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dev->hard_start_xmit = sonic_send_packet;
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dev->get_stats = sonic_get_stats;
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dev->set_multicast_list = &sonic_multicast_list;
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/*
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* clear tally counter
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*/
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sonic_write(dev, SONIC_CRCT, 0xffff);
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sonic_write(dev, SONIC_FAET, 0xffff);
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sonic_write(dev, SONIC_MPT, 0xffff);
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return 0;
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}
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int __init mac_onboard_sonic_ethernet_addr(struct net_device* dev)
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{
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const int prom_addr = ONBOARD_SONIC_PROM_BASE;
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int i;
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/* On NuBus boards we can sometimes look in the ROM resources.
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No such luck for comm-slot/onboard. */
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for(i = 0; i < 6; i++)
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dev->dev_addr[i] = SONIC_READ_PROM(i);
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/* Most of the time, the address is bit-reversed. The NetBSD
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source has a rather long and detailed historical account of
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why this is so. */
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if (memcmp(dev->dev_addr, "\x08\x00\x07", 3) &&
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memcmp(dev->dev_addr, "\x00\xA0\x40", 3) &&
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memcmp(dev->dev_addr, "\x00\x05\x02", 3))
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bit_reverse_addr(dev->dev_addr);
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else
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return 0;
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/* If we still have what seems to be a bogus address, we'll
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look in the CAM. The top entry should be ours. */
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/* Danger! This only works if MacOS has already initialized
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the card... */
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if (memcmp(dev->dev_addr, "\x08\x00\x07", 3) &&
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memcmp(dev->dev_addr, "\x00\xA0\x40", 3) &&
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memcmp(dev->dev_addr, "\x00\x05\x02", 3))
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{
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unsigned short val;
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printk(KERN_INFO "macsonic: PROM seems to be wrong, trying CAM entry 15\n");
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sonic_write(dev, SONIC_CMD, SONIC_CR_RST);
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sonic_write(dev, SONIC_CEP, 15);
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val = sonic_read(dev, SONIC_CAP2);
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dev->dev_addr[5] = val >> 8;
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dev->dev_addr[4] = val & 0xff;
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val = sonic_read(dev, SONIC_CAP1);
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dev->dev_addr[3] = val >> 8;
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dev->dev_addr[2] = val & 0xff;
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val = sonic_read(dev, SONIC_CAP0);
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dev->dev_addr[1] = val >> 8;
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dev->dev_addr[0] = val & 0xff;
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printk(KERN_INFO "HW Address from CAM 15: ");
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for (i = 0; i < 6; i++) {
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printk("%2.2x", dev->dev_addr[i]);
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if (i < 5)
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printk(":");
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}
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printk("\n");
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} else return 0;
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if (memcmp(dev->dev_addr, "\x08\x00\x07", 3) &&
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memcmp(dev->dev_addr, "\x00\xA0\x40", 3) &&
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memcmp(dev->dev_addr, "\x00\x05\x02", 3))
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{
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/*
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* Still nonsense ... messed up someplace!
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*/
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printk(KERN_ERR "macsonic: ERROR (INVALID MAC)\n");
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return -EIO;
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} else return 0;
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}
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int __init mac_onboard_sonic_probe(struct net_device* dev)
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{
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/* Bwahahaha */
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static int once_is_more_than_enough;
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int i;
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int dma_bitmode;
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if (once_is_more_than_enough)
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return -ENODEV;
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once_is_more_than_enough = 1;
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if (!MACH_IS_MAC)
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return -ENODEV;
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printk(KERN_INFO "Checking for internal Macintosh ethernet (SONIC).. ");
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if (macintosh_config->ether_type != MAC_ETHER_SONIC)
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{
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printk("none.\n");
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return -ENODEV;
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}
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/* Bogus probing, on the models which may or may not have
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Ethernet (BTW, the Ethernet *is* always at the same
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address, and nothing else lives there, at least if Apple's
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documentation is to be believed) */
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if (macintosh_config->ident == MAC_MODEL_Q630 ||
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macintosh_config->ident == MAC_MODEL_P588 ||
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macintosh_config->ident == MAC_MODEL_C610) {
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unsigned long flags;
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int card_present;
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local_irq_save(flags);
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card_present = hwreg_present((void*)ONBOARD_SONIC_REGISTERS);
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local_irq_restore(flags);
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if (!card_present) {
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printk("none.\n");
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return -ENODEV;
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}
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}
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printk("yes\n");
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/* Danger! My arms are flailing wildly! You *must* set this
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before using sonic_read() */
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dev->base_addr = ONBOARD_SONIC_REGISTERS;
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if (via_alt_mapping)
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dev->irq = IRQ_AUTO_3;
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else
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dev->irq = IRQ_NUBUS_9;
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if (!sonic_version_printed) {
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printk(KERN_INFO "%s", version);
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sonic_version_printed = 1;
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}
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printk(KERN_INFO "%s: onboard / comm-slot SONIC at 0x%08lx\n",
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dev->name, dev->base_addr);
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/* Now do a song and dance routine in an attempt to determine
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the bus width */
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/* The PowerBook's SONIC is 16 bit always. */
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if (macintosh_config->ident == MAC_MODEL_PB520) {
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reg_offset = 0;
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dma_bitmode = 0;
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} else if (macintosh_config->ident == MAC_MODEL_C610) {
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reg_offset = 0;
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dma_bitmode = 1;
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} else {
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/* Some of the comm-slot cards are 16 bit. But some
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of them are not. The 32-bit cards use offset 2 and
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pad with zeroes or sometimes ones (I think...)
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Therefore, if we try offset 0 and get a silicon
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revision of 0, we assume 16 bit. */
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int sr;
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/* Technically this is not necessary since we zeroed
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it above */
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reg_offset = 0;
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dma_bitmode = 0;
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sr = sonic_read(dev, SONIC_SR);
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if (sr == 0 || sr == 0xffff) {
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reg_offset = 2;
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/* 83932 is 0x0004, 83934 is 0x0100 or 0x0101 */
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sr = sonic_read(dev, SONIC_SR);
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dma_bitmode = 1;
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}
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printk(KERN_INFO
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"%s: revision 0x%04x, using %d bit DMA and register offset %d\n",
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dev->name, sr, dma_bitmode?32:16, reg_offset);
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}
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/* this carries my sincere apologies -- by the time I got to updating
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the driver, support for "reg_offsets" appeares nowhere in the sonic
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code, going back for over a year. Fortunately, my Mac does't seem
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to use whatever this was.
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If you know how this is supposed to be implemented, either fix it,
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or contact me (sammy@oh.verio.com) to explain what it is. --Sam */
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if(reg_offset) {
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printk("%s: register offset unsupported. please fix this if you know what it is.\n", dev->name);
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return -ENODEV;
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}
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/* Software reset, then initialize control registers. */
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sonic_write(dev, SONIC_CMD, SONIC_CR_RST);
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sonic_write(dev, SONIC_DCR, SONIC_DCR_BMS |
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SONIC_DCR_RFT1 | SONIC_DCR_TFT0 | SONIC_DCR_EXBUS |
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(dma_bitmode ? SONIC_DCR_DW : 0));
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/* This *must* be written back to in order to restore the
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extended programmable output bits */
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sonic_write(dev, SONIC_DCR2, 0);
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/* Clear *and* disable interrupts to be on the safe side */
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sonic_write(dev, SONIC_ISR,0x7fff);
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sonic_write(dev, SONIC_IMR,0);
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/* Now look for the MAC address. */
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if (mac_onboard_sonic_ethernet_addr(dev) != 0)
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return -ENODEV;
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printk(KERN_INFO "MAC ");
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for (i = 0; i < 6; i++) {
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printk("%2.2x", dev->dev_addr[i]);
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if (i < 5)
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printk(":");
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}
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printk(" IRQ %d\n", dev->irq);
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/* Shared init code */
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return macsonic_init(dev);
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}
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int __init mac_nubus_sonic_ethernet_addr(struct net_device* dev,
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unsigned long prom_addr,
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int id)
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{
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int i;
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for(i = 0; i < 6; i++)
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dev->dev_addr[i] = SONIC_READ_PROM(i);
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/* For now we are going to assume that they're all bit-reversed */
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bit_reverse_addr(dev->dev_addr);
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return 0;
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}
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int __init macsonic_ident(struct nubus_dev* ndev)
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{
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if (ndev->dr_hw == NUBUS_DRHW_ASANTE_LC &&
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ndev->dr_sw == NUBUS_DRSW_SONIC_LC)
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return MACSONIC_DAYNALINK;
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if (ndev->dr_hw == NUBUS_DRHW_SONIC &&
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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:
|
|
*
|
|
*/
|